CN1795362B - Head protector - Google Patents

Abstract

A head protection system comprises a helmet shell, visor mounting means for pivotally mounting a visor to the helmet to enable the visor to be moved between raised and lowered positions, and a retainer for releasably retaining the visor to the helmet. The system includes a visor mounted to the shell having a substrate layer of a transparent thermoplastic material and a backing layer having a plurality of layers of a high performance, ballistic resistant material. The system further includes a second facepiece that can be releasably attached to the shell using the same facepiece mounting arrangement and that has a different configuration and primary function.

Description

head protector

technical field

The present invention relates to head protectors and protective armor, particularly but not limited to head protectors and armor for protecting people from the impact of explosives and other munitions.

Background technique

Head protectors are known to be part of a protective system to keep personnel involved in hazardous activities such as bomb disposal and mine clearance. Head protectors include closed panel types, ie helmets having a front open area completely surrounded by the helmet shell. The custom fits on the helmet shell over the front opening area and is made of acrylic material, which is able to withstand the high energy impact of sharp fragments without shattering. The helmet is covered with multiple layers of ballistic material to increase the level of protection of the helmet. A ventilation hose is attached to the back of the helmet, the end of which houses an electric fan to provide air circulation to the interior of the helmet. The hose and fan combination also acts as a counterweight to the weight of the visor on the front of the helmet, keeping the helmet's center of gravity closer to its center. The visor is securely secured to the helmet with fasteners located at the top and bottom of the helmet opening.

Contents of the invention

According to one aspect of the present invention, there is provided a head restraint system comprising: a helmet shell; Mounting device; retaining device for releasably retaining the mask on the mounting device; a mask, arranged to be mounted on said mounting device, and having a structure in which the test standard MIL-STD-662F is adopted and the MIL-STD-662F is used At least a portion of the mask has a V-50 impact rating of 600 meters per second or above when tested against a 0.22mm projectile as defined in P-46593A.

The test mentioned above is the Department of Defense test method standard MIL-STD-662F. The projectiles used in the tests are defined in MIL-P-46593A (ORD). Military Description: Caliber .22, .30, .50 and 22mm fragmentation simulated projectiles. The above tests simulated projectiles using only .22 caliber projectiles, also known as 17 grain (CN) Chisel Nose (FSP) fragments.

Advantageously, this arrangement provides a system of protection against explosive munitions and the mask can be raised for enhanced ventilation and convenience when the mask is not required. The device also allows the mask to be removed and replaced with a mask with other functions as well.

In one embodiment, the mask may include multiple layers of high performance ballistic resistant material within its structure to prevent sharp high energy fragments from piercing the wearer.

The viewing portion of the mask may include a layer of high energy absorbing acrylic material, in one embodiment, the acrylic layer is between 0.5-5/8 inches thick. The mask also includes a base layer of polycarbonate, which in one embodiment is between 3/8-1/4 inch thick. The acrylic layer can have a V-50 rating of 600 meters per second to 800 meters per second, and the polycarbonate and ballistic material backing layer can have a V-50 rating of over 600 meters per second and can be 700 meters per second or more.

According to another aspect of the present invention, there is provided a head restraint system comprising: a helmet shell on which a visor is pivotally mounted to enable movement of the visor between raised and lowered positions A mounting device; a retaining device for releasably retaining a mask on the mounting device; a mask mounted to the mounting device and comprising a layer of transparent material and a plurality of layers of ballistic resistant material.

According to another aspect of the present invention there is provided a helmet comprising: an outer shell; means for pivotally mounting the shield to the outer shell for movement of the shield relative to the outer shell between a first position and a second position device; and a locking system for locking the shield in at least one of a first position and a second position, the locking system comprising a lock that prevents movement of the shield relative to the housing and a hand-accessible lock that can be released by pressing The pressing member can move the shielding member from the corresponding first or second position.

According to another aspect of the present invention there is provided a protective helmet comprising a layer of plastic transparent material; a plurality of layers of high performance material bonded together to form a laminate; and means for securing the laminate to a Fixtures on layers of plastic transparent material.

According to another aspect of the present invention there is provided a helmet visor comprising a layer of plastic transparent material; a plurality of layers of high performance material bonded together to form a laminate; and means for securing the laminate A fixture onto a part of the surface of a layer of plastic transparent material.

According to another aspect of the present invention, there is provided a method of making a protective helmet comprising the steps of: providing a layer of plastic transparent material; forming a laminate comprising a plurality of layers of high performance material; and securing the laminate to the layer of plastic transparent material superior.

According to another aspect of the present invention, there is provided a helmet, comprising: a shell; a belt guide mounted on each side of the helmet at a position where the support belt passes under the wearer's chin, and the belt passes through the wearer's chin during use. Through the belt guide and between the belt guides, so that the belt portion between the belt guides forms a chin strap; a support connected to the rear of the shell, the support and the shell can move relative to the wearer the head or neck portion of the belt guide, the straps extending from each belt guide to the support in use; and a tension member extending from a position between the support and the belt guide and arranged so When the tensioning member is tensioned, the length of the belt protruding from the support member and passing through the belt guide can be shortened.

According to another aspect of the present invention, there is provided a helmet retention system comprising: first and second strap guides mounted on each side of the helmet where the straps pass under the wearer's chin, When in use, the belt passes through the belt guides and is located between the belt guides so that a part of the belt between the belt guides forms a chin strap; in use, it is movably coupled to the back of the helmet for contact with the wearer's head or A support member in combination with the neck portion, the belt extends from the belt guide to the support member; a tension member protruding from the support member, which is arranged so that when the tension member is tensioned, it can cause the belt to protrude from the support member And the length of the belt passing through the belt guide is shortened.

According to another aspect of the present invention, there is provided a helmet comprising: a shell; an electric system for assisting a wearer; a power supply controller for controlling power supply to the system, wherein the power supply controller is releasably mounted on the shell.

According to another aspect of the present invention, there is provided a helmet comprising: an outer shell; a visor having a water removal device on its surface facing the interior of the outer shell; be mounted on the helmet.

According to another aspect of the invention there is provided a control unit for controlling an electric system of a helmet, the control unit having fastening means for releasably fastening the control unit to the helmet.

According to another aspect of the present invention, there is provided a helmet comprising: a shell; a shield; and coupling means for coupling the shield to the shell and capable of moving the shield relative to the shell; and coupling to the coupling means Shock-absorbing means for moving the shield relative to the housing independently of the coupling means.

According to another aspect of the present invention, there is provided a helmet comprising: a shell; a shield coupled to the shell and movable relative to the shell between a first position and a second position; and locking the shield in the a locking system in at least one of said first and second positions, and which has a rotating cam mounted on the housing, a hole formed in said shield with openings on the sides for the cam to Incorporation into the bore may allow the cam to rotate when the cam is in a position within the bore that prevents movement of the cam through the opening.

According to another aspect of the present invention, there is provided a protective system comprising: a protective helmet; at least one electric device mounted on the helmet; a controller for controlling the electric device from a position away from the helmet; transmitting a control signal from the controller A device for delivery to an electric device, wherein the controller includes a fastening means for fastening the controller to a part of the wearer's body so that the second controller is visible to the wearer when in use.

According to another aspect of the present invention, there is provided a protective system comprising: a helmet; at least one electric device mounted on the helmet; a controller for controlling the electric device from a location remote from the helmet; transmitting a control signal from the controller An apparatus for an electric device, wherein the controller includes a visual indication device responsive to the state of at least one of the helmet and the controller.

According to another aspect of the present invention, there is provided a protection system comprising: a helmet; at least one electric device mounted on the helmet; a monitor monitoring the electric device from a location remote from the helmet; and transmitting a signal from the electric device to the monitor device.

According to another aspect of the present invention, there is provided a protective system comprising: a helmet; at least one electric device mounted on the helmet; at least one of controlling the electric device and monitoring the electric device from a location remote from the helmet means for transmitting a signal from at least one of the controller and the electric device to the other of the controller and the electric device; and a holder mounted on the wearer's clothing for holding the controller.

According to another aspect of the present invention, a protection system is provided, comprising: a helmet; at least one electric device installed on the helmet; a power source installed on the helmet and configured to drive the electric device.

According to another aspect of the present invention, there is provided a protective helmet having a side portion covering a user's ears and a microphone located on the side portion.

According to another aspect of the present invention, there is provided a head protector comprising: a helmet shell having a head cavity therein, a liner lining the head cavity, wherein at least one of the liner and the shell comprises at least A retaining ring is slidably received in the filler to adjust the size of the head cavity.

According to another aspect of the present invention, there is provided a head protector comprising: a helmet shell, a shield, means for slidably engaging the shield to the helmet shell and slidably disengaging the shield from the helmet shell coupling device.

According to another aspect of the present invention, there is provided a head protector, comprising: a helmet and a holder for holding the helmet on the wearer's head, wherein the holder includes connectors protruding from the helmet to support each side of the helmet A device, the connector is configured to be easily releasable and interchangeably connected to one of the chin cover and the chin strap.

According to another aspect of the present invention, there is provided a head protector including: a helmet, a plurality of visors interchangeably connected to the helmet, and coupling means for coupling the visors to the helmet.

According to another aspect of the present invention there is provided a helmet having a retainer comprising a nape support comprising first and A second strap is attached to the helmet.

According to another aspect of the present invention there is provided a helmet with a retainer comprising a nape support and an adjustable strap for tightening the retainer on the wearer's head, wherein the adjustable strap is connected from The nape support extends downwardly and optionally sideways.

According to another aspect of the present invention, there is provided a chin cover for a retention system comprising a chin pad having an upper portion and a lower portion, and a first strap adjacent to the upper portion and a second strap adjacent to the lower portion.

According to another aspect of the present invention, there is provided a helmet comprising: a shell; a shield; and coupling means for coupling the shield to the shell and capable of moving the shield relative to the shell; and coupled to the coupling means and Shock absorbing means arranged to allow movement of the shield relative to the housing independently of the coupling means.

According to another aspect of the present invention, there is provided a helmet comprising: a shell; a shield coupled to the shell to move between a first position and a second position relative to the shell; and locking the shield in at least a first position. A locking system on one of the position and the second position, which has a rotating cam mounted on the housing, a hole formed in the shield, the side of the hole has an opening for receiving the cam into the hole, when the cam The hole allows the cam to rotate in a position within the hole that prohibits movement of the cam from the hole through the opening.

According to another aspect of the present invention, there is provided a helmet comprising: a shell; a shield coupled to the shell to move between a first position and a second position relative to the shell; and locking the shield in at least a first position. A locking system in one of the position and the second position, the locking system comprising a lock that prevents movement of the shield relative to the housing and a hand-accessible push member that releases said lock by pressing so that the shield can be moved from The corresponding first or second position moves.

According to another aspect of the present invention there is provided a protective helmet comprising a layer of plastic transparent material; a plurality of layers of high performance material bonded together to form a laminate; and means for securing the laminate to a Fixtures on layers of plastic transparent material.

According to another aspect of the present invention, there is provided a helmet visor comprising a layer of plastic transparent material; a plurality of layers of high performance material bonded together to form a laminate; and means for securing the laminate to a Fixing means on a part of said surface of a layer of plastic transparent material.

According to another aspect of the present invention, there is provided a method of making a protective helmet comprising the steps of: providing a layer of plastic transparent material; forming a laminate comprising a plurality of layers of high performance material; securing the laminate to the layer of plastic transparent material.

According to another aspect of the present invention, there is provided a helmet, comprising: a shell; a belt guide, which is installed on each side of the helmet where the support belt passes under the wearer's chin, and in use, the belt passes through the belt guide and between each belt guide so that the portion of the belt between the belt guides forms a chin strap; a support coupled to the rear of the housing, the support and the housing being relatively movable and In conjunction with the head or neck portion of the wearer, the belt extends from the belt guide to the support in use; a tensioning member extending from a position between the support and the belt guide, arranged so that when tensioned When the member is tightened, the length of the belt protruding from the support member and passing through the belt guide can be shortened.

According to another aspect of the present invention, there is provided a helmet retention system comprising: first and second strap guides mounted on each side of the helmet where the support strap passes under the wearer's chin, wherein, in use, the The belt passes through the belt guides and is located between the belt guides so that the portion of the belt between the belt guides forms a chin strap; in use, it is movably connected to the back of the helmet for contact with the wearer's head or neck a partly combined support member to which the belt extends from each belt guide; and a tension member extending from the support member arranged so that when the tension member is tensioned, the The length of the belt through which the support protrudes and passes through the belt guide is shortened.

According to another aspect of the present invention, there is provided a helmet comprising: a shell; an electric system for assisting a wearer; a power supply controller for controlling power supply to the system, wherein the power supply controller is releasably mounted on the shell.

According to another aspect of the present invention, there is provided a helmet, comprising: an outer shell; a visor having a dehumidification device on its surface facing the interior of the outer shell; Mounted on the helmet.

According to another aspect of the invention there is provided a control unit for controlling an electric system of a helmet, the control unit having fastening means for releasably fastening the control unit to the helmet.

Description of drawings

Embodiments of the present invention will be described below with reference to the accompanying drawings, wherein:

What Fig. 1 shows is a perspective view of a helmet according to an embodiment of the present invention;

Figure 2A is a perspective view of a first visor for use with the helmet of Figure 1 according to an embodiment of the present invention;

What Fig. 2 B shows is the front view of the mask among Fig. 2 A;

What Fig. 2 C shows is the cross-sectional view of the mask along the A-A line in Fig. 2A;

Figure 3A is a perspective view of a second visor for use with the helmet of Figure 1 according to an embodiment of the present invention;

What Fig. 3 B shows is the front view of the mask among Fig. 3 A;

What Fig. 3 C shows is the sectional view that the mask in 3A is cut along A-A line;

Figure 4A is a perspective view of the helmet of Figure 1 with the visor of Figures 2A-2C mounted on the helmet in a first visor orientation;

Figure 4B is a side view of the structure shown in Figure 4A;

Figure 5 is a perspective view of the helmet of Figure 1 with the visor of Figures 2A-2C mounted on the helmet in a second visor orientation;

Figure 6 shows a perspective view of the helmet of Figure 1 with the visor of Figures 2A-2C mounted on the helmet and fully locked in a lowered position;

Figure 7 is an exploded view of a visor mounting device for the helmet of Figure 1 according to an embodiment of the present invention;

What Fig. 8 shows is a structure diagram of a protective helmet according to an embodiment of the present invention;

Figure 9 is a partial cross-sectional view of a mask according to an embodiment of the present invention;

Figure 10 is a schematic rear view of the mask shown in Figure 9;

Figure 11 is a side view, in partial section, through a mask according to an embodiment of the present invention;

What Fig. 12 shows is the perspective view of the mask among Fig. 11;

Figures 13A-13C show a head protection system according to an embodiment of the present invention, wherein what Figure 13A shows is a perspective view of a helmet with an EOD mask, and what Figure 13B shows is a perspective view of an identification mask, Fig. 13C shows a perspective view of the CBRN mask;

Figure 14A shows a side view of a helmet and visor mounting system according to an embodiment of the present invention;

Figure 14B shows a side view of the wings or sides of the visor attached to the helmet of Figure 14A;

Figure 14C shows a cross-sectional view through the mounting system of Figure 14A;

Figure 14D is a side view of the mask mounting system shown in Figure 14C;

Figure 14E is an exploded view of the mounting bracket in Figures 14D and 14E;

15A-15F show various views of a protective helmet with an EOD visor according to an embodiment of the present invention;

Figure 16 shows various perspective views of a helmet including a search visor according to another embodiment of the present invention;

17A-17D show various views of a helmet with a CBN visor according to another embodiment of the present invention;

18A-18D show various views through a helmet according to an embodiment of the invention;

Figure 19 is a cross-sectional view of a through-mask mounting system according to an embodiment of the present invention;

Figure 20 shows a side view of the helmet of Figure 19 with the mounting system;

Figure 21A shows a side view of a helmet according to an embodiment of the present invention;

Figure 21B is an enlarged view of the locking mechanism in the embodiment of Figure 21A;

Figure 21C shows a cross-sectional view through the locking mechanism of Figure 21B;

22A-22D show various views of a locking system according to another embodiment of the present invention;

23A-23E show various views of a helmet retention system according to an embodiment of the present invention;

Figures 24A and 24B show a helmet retention system according to another embodiment of the present invention;

Figure 24C is a perspective view of a chin cover according to one embodiment of the present invention;

25A-25E show perspective views of a liner according to an embodiment of the present invention;

26-30 show various views of a helmet with a control module according to another embodiment of the present invention;

Figure 31 is a schematic diagram of a control module and a remote controller according to an embodiment of the present invention;

FIG. 32 is a schematic diagram of a remote controller circuit according to an embodiment of the present invention;

33A and 33B show a remote controller according to an embodiment of the present invention;

Figure 34 shows a mounting device for a remote controller according to another embodiment of the present invention;

Figure 35A shows the control interface of the controller mounted on the helmet according to an embodiment of the present invention;

Figure 35B shows a user interface of a remote controller according to an embodiment of the present invention;

Figure 35C shows a remote controller according to another embodiment of the present invention; and

Fig. 35D shows an electric module for a protective helmet according to another embodiment of the present invention.

Detailed ways

Figures 1-7 show a reconfigurable, multifunctional head protection system according to a first embodiment of the present invention, comprising: a helmet, a first face shield for explosion protection, shared with a face-mounted respirator A second visor; a mounting device for releasably attaching one of the two visors to the helmet.

Referring to Fig. 1, a helmet 2 comprises a helmet shell 4, a visor mount 5 arranged on both sides of the shell (only one side is shown), a helmet retaining system 7 for securing the helmet to the wearer's head, and a A controller 9 for controlling various devices related to the helmet. The specific implementation of the maintenance system and controller will be described in more detail later.

The helmet shell is face open and made of high impact material to withstand blast impact. For example, the outer shell may be made of a composite material such as Kevlar, Dyneema or other high performance, high tensile strength material with a bonded layer of ballistic resistant material or fibers.

Shown in Figures 2A to 2C is a visor 6 which is releasably mounted on a helmet and whose primary purpose is to provide blast protection. This mask is especially suitable for bomb disposal, mine clearance and similar hazardous activities. Shown in Figures 3A to 3C is a visor 106, which is also releasably mounted on a helmet, which provides both protection and the ability to accommodate a face-mounted respirator. This mask is particularly suitable for activities performed in environments that may be or have been contaminated, eg by chemical agents, biological agents or nuclear materials.

The helmet shell that can be shared with different face shields greatly improves the versatility of the helmet compared with the existing helmets that have a single-function dedicated fixed face shield. Advantageously, the mask mounting system allows the wearer to easily and quickly remove one mask and replace it with another during work without having to remove the helmet. The head protection system will be described in detail below.

Shown in FIGS. 4A and 4B is the first mask 6 mounted to the housing 4 . The mounting system 5 includes bosses 8 projecting outwardly from each side of the helmet. The visor has a curved front portion 11 and opposing side portions 12, 13 each having a circular hole 10 into which a corresponding protrusion is inserted for pivotally mounting the visor to the helmet so that the visor can be Move between raised and lowered positions.

A first slot 14 with a rearward opening 16 and a second slot 18 with a downward opening 20 are also formed in the side portion 12 of the mask to enable the mask to be locked in a raised or lowered position.

A visor locking system 24 is mounted on the helmet and includes a depressible locking member 22 and a button 26 coupled to the locking member 22 and projecting outwardly from its lower end. The locking member 22 is biased (by suitable means) to an outwardly extended position wherein it passes through one of the first and second slots 16, 18 to secure the mask by aligning the locking or abutting surface with the edge of the slot. Locks in raised or lowered position. Depressing the button 26 causes the locking member 22 to move inward against its biasing force beyond the inner surface of the side portion 12 of the mask, opening the mask and allowing it to be raised or lowered. When the mask is between the raised and lowered positions, the button can be easily released as it is held in the lowered position by the overlapping portion 15 of the mask and the locking member will automatically return to lock the mask in the aligned slot. It should be noted that the radial distance between the pivot axis 32 and the lower edge 34 of the mask side 12 is smaller than the distance between the pivot axis 32 and the upper edge 36 of the button 26 so that when the mask is raised, the button does not come into contact with The lower edge 34 interferes. This allows the button to extend outwardly beyond the lock 22 to allow access to the container.

As shown in FIG. 4B , the blocking member 38 is located in front of the locking member 22 and protrudes from the helmet shell 4 . The stop 38 provides an abutment surface 40 for engaging the front edge 42 of the second slot 18 when the visor 6 is in the lowered position, thereby preventing further downward movement of the visor 6 about the pivot axis 32 . Beneficially, the barrier also provides a robust means of preventing the mask from moving backwards towards the wearer (ie towards the rear of the helmet) against the high impact force of the blast on the front of the mask. When the front of the mask is subjected to high impact forces, the blocking member can also separate the locking member from engaging the front edge 42 of the second groove 18, thereby reducing the risk of the locking member being damaged and making the locking member in high impact. The mask can still be released and raised afterwards. The barrier is at least partially elastic to absorb mechanical shock and reduce the transmission of impact forces from the visor to the helmet, thereby reducing the degree of injury and the risk of concussion.

The helmet further includes an easy release visor retention system which allows the visor to be easily and quickly removed from the helmet and replaced with another visor of the same or a different type. The mask holder includes a locking flap 44 having a lower end 46 pivotally mounted below the button 26 and a fastener 50 with a fastener 50 securing the flap to the protrusion 8 through a hole 52 formed therein. 48 upper end. A slot 53 is formed in the cover to receive the button 26 .

To remove the visor from the helmet, the fastener 50 is released from the protrusion as shown in FIG. Afterwards, the visor is simply removed from the helmet at the point between the helmet and the cover plate. The reverse process can then attach the visor to the helmet or attach another visor to the helmet.

Figure 4A shows how the visor 6 is attached to or detached from the helmet in the lowered position. Figure 5 shows the mask in the locked raised position with the locking member placed in the slot 14 at the rear of the mask. The visor can also be attached to or detached from the helmet in the raised position by unfolding the sides 12, 13 of the visor and moving the visor over the protrusions to remove it from the helmet. The reverse process can be used to attach the visor to the helmet. The visor shown in Figure 6 is fully and securely mounted to the helmet with the cover plate 44 swinging back and secured to the protrusion 8 so as to prevent the visor from sliding over the protrusion. In this position, when the mask is in its lowered position, the cover also covers the barrier and the portion of the mask adjacent to the barrier so that this portion of the mask can be deployed and lifted beyond the end of the barrier which would otherwise cause A consequence of the movement of the mask towards the wearer's face when high impact forces are applied to the front of the mask. The cover plate can also cover the components of the locking system.

The mask retention system is shown in detail in FIG. 7 . Referring to FIG. 7 , the retention system includes a mounting plate or bracket 54 with protrusion 8 mounted on the helmet shell, locks and buttons 22 , 26 , stop 38 , cover 44 and fastener 50 . The mounting plate 54 includes a perforated housing 56 for receiving and retaining the locks and buttons 22 , 26 . When assembling the retainer system, the lock and button are inserted into the housing 56 from the back 58 of the mounting bracket 54 . A resilient bias 60 , which may include a spring, is positioned into the housing biasing the lock and button outwardly toward the front 62 of the mounting plate. However, the lock is retained in the housing by a protrusion, lug or projection 64 that engages the wall of the housing 56, thereby preventing it from moving further outward (could also be provided at the other end 27 of the lock. protrusion).

The blocking member 38 includes a protrusion 66 protruding from and integrally formed with the front face 62 of the mounting bracket 54 , and a resilient member 68 mounted on the front face of the protrusion 66 .

The cover plate 44 is pivotally mounted at its lower end to the mounting plate by screws 70 passing through through holes 72 in the cover plate and into threaded holes 74 in the mounting plate. Other techniques for pivotally connecting the cover plate to the mounting plate will be apparent to those of ordinary skill in the art.

The fastener 50 includes a screw having a screw head 76, a shank 78 passing through a hole 80 formed in the upper portion of the cover plate 44, and a flange 82 that retains the fastener on the cover plate.

In this embodiment, a mounting bracket is used to house the microphone 84 and audio box 86 . A perforated projection 88 protrudes from the body of the mounting bracket 54 for placing and holding the microphone 84. The microphone 84 is positioned between the microphone and the projection 88 and isolates the microphone from any mechanical shock transmitted through the mounting plate. An elastic (such as rubber) ring 90 remains in the hole. Both the microphone and the audio box are optional, and can be omitted in whole or in part or installed in other parts in other embodiments.

Figures 2A-2C illustrate an example of an EOD mask releasably attached to a protective helmet in accordance with an embodiment of the present invention. The mask 6 comprises a base layer 108 of transparent material, such as polycarbonate, which forms the curved front portion 11 and side portions 12, 13 of the mask. The mask further includes a back layer 130 positioned at the rear and adjacent to the base layer 108, the back layer 130 extending around the front portion 11 of the mask and terminating at a rear edge 132 between the front and rear of the mask so as not to reach the side portions 112, 114. (But in other embodiments, the back layer also can extend to any other position, can stretch to the position that covers the side portion or wing portion of mask). The backing layer, which may be bonded to the base layer, comprises multiple layers of ballistic resistant material bonded together to form a composite, and thus is generally opaque. The backing layer forms openings 134 at the front of the mask to allow light to pass through. The mask also includes an outer layer 136 adjacent the outer surface of the base layer 108 and having a periphery 138 sized and shaped to cover at least the open area 134 . In this embodiment, the perimeter of the outer layer overlaps the edge band 131 around and around. The outer layer, which may be secured to the base layer and/or backing layer by any suitable means such as mechanical fasteners (eg, rivets 133, 135), may comprise a transparent material such as acrylic (or polycarbonate). However, acrylic resins are preferred because they disperse high energy impact faster and are less brittle than polycarbonate.

Apertures 10, 9 are formed in each side portion 12, 14 of the visor to enable pivotal mounting of the visor on protrusions extending from opposite sides of the helmet shell, as shown in Figures 1, 4A and 4B. A first groove 14 having a rearward opening 16 and a second groove 18 having a downward opening 20 are formed on one of the side portions 12 , and a groove substantially corresponding to the first groove is formed on the other side portion 13 . However, in this embodiment, the other side portion 13 has no lower groove corresponding to the second groove 18 . As noted above, referring to Figures 4A and 4B, the first and second slots cooperate with locking mechanisms on the helmet to lock the visor in the raised and lowered positions, respectively.

In this embodiment, a wiper 148 is mounted along the upper edge 150 of the visor for engaging the helmet shell to form a seal therewith at least in the visor lowered position, thereby preventing moisture, such as rain, from passing between the helmet and visor. The wiper comprises a flexible material and includes a lip portion 152 sealing the helmet and a less flexible mounting portion 154, the inner surface of which is provided with ribs 156 to increase its rigidity.

One or more searchlights 158, 160 may be mounted on the upper edge 150 of the visor. It can also be installed in a cavity separate from the wiper. In this embodiment, two searchlights are provided, equidistant on either side of the centerline 166, and positioned in positions substantially corresponding to the positions of the wearer's eyes. The floodlights may include light emitting diodes that are capable of efficiently producing high-intensity light. The light beams of the light source can converge and meet at a predetermined distance in front of the mask to produce the desired shape and size of the light beams, and the direction and convergence angle of the light beams can be adjusted.

Figures 3A to 3C show another embodiment of a face shield that can be attached to the same helmet with the same coupling mechanism as the face shield shown in Figures 2A to 2C, but for a different purpose, Figures 6A to 6C The mask shown is shaped and sized to accommodate a breathing device or respirator, such as an oxygen mask, worn on the face. The mask shown in Figures 3A to 3C is in many respects the same as the mask shown in Figures 2A to 2C, and like parts are designated by like reference numerals.

The visor 100 includes a curved front portion 111 and side portions 12, 13, wherein the side portions 12, 13 have holes 10, 9 for receiving respective protrusions protruding from either side of the helmet so that the visor can be pivotally mounted on the helmet. Rearward and downward slots 14 and 18 are also formed in one side 12 to cooperate with the same helmet-mounted locking mechanism in the same manner as the visor slots 14, 18 shown in Figures 2A to 2C. The rearward slot 14 may also be formed in the other side portion 13 of the mask, or may be omitted altogether.

The mask includes a base layer 108 which forms the curved front and sides of the mask and comprises a transparent material such as polycarbonate. A reinforced back layer 130, which may be made of multiple layers of ballistic resistant material such as Kevlar or Dyneema bonded together, is positioned behind and adjacent to the base layer and extends to the front of the mask, terminating at a position where the mask remains and locks. The hole in the side of the mechanism mates with the rear edge 132 in front of the slot. The back layer defines openings 134 in the front of the mask to allow light to pass through.

The mask also includes an outer layer 136 of transparent material sized to substantially cover the open area 134 and to enhance the transparent viewing area of the mask. For the embodiment shown in Figures 2A-2C, the outer layer may be made of an acrylic-like material to withstand high energy impacts to the front. Wipers 148 may be positioned along the upper edge of the visor and may include one or more floodlights 158 , 160 . For convenience, the wipers may be the same as those shown in FIGS. 2A to 2C.

The main difference between the mask shown in Figures 3A to 3C and that shown in Figures 2A to 2C is that in Figures 2A to 2C it can be seen (from the front) that the front of the mask slopes outward from top to bottom , the angle α formed between the upper edge of the mask and the base layer 208 is different. The lower portion of the mask front below the opening lower edge 160 is longer and less curved than the corresponding portion shown in Figures 2A to 2C. The low frontal extension at the front of the mask is designed to increase the interior volume of the mask to accommodate a face-mounted respirator (preferably a range of different types of respirators), thereby enabling the helmet to be used when necessary or desired Where a respirator is used.

As noted above, the head restraint system allows face shields having a variety of different shapes and other features designed to perform different functions to be used with the same helmet, eliminating the need for different helmets. The protection system also enables the visor to be easily removed from the helmet and replaced with another visor, so that it can be changed quickly and easily during work without having to remove the helmet. This allows personnel to respond very quickly to changes in the type of primary threat and maximize their own protection by adjusting the helmet system to the proper configuration.

The visor structure described above comprising a layer of transparent plastic material such as polycarbonate and a back layer made of high-performance material has particular advantages over known protective structures, which can be used in protective helmets in addition to visors. Embodiments of this structure and its particular advantages will be described below.

protective helmet

，Dyneema，Kevlar

等等。每一层107可以包括高性能材料和热塑性或热固性树脂的复合物。第二基底或层压板105可以通过在多层相互接触时施加压力和热量中的至少之一使每层的热塑树脂粘结到相邻层上的方法来形成。Fig. 8 shows a structure of a protective helmet according to an embodiment of the present invention, which can be used, for example, in the structure of a visor of a helmet. Referring to Fig. 8, a protective helmet 101 includes a first substrate 103 having a layer of transparent plastic material, and a second substrate 105 with a plurality of layers 107 of high performance material laminated together. Each high performance material layer may comprise a material having high tensile strength across its thickness t, examples of such materials include but are not limited to high performance fibers, whether woven or nonwoven, such as Spectra

,Dyneema , Kevlar

etc. Each layer 107 may comprise a composite of high performance material and thermoplastic or thermosetting resin. The second substrate or laminate 105 may be formed by applying at least one of pressure and heat while the layers are in contact with each other to bond the thermoplastic resin of each layer to the adjacent layer.

The second substrate 105 may be secured to the first substrate 103 by any suitable means such as by bonding or with one or more mechanical elements or means such as bolts, rivets, screws or other mechanical means.

In one embodiment, the second substrate can be secured to the first substrate by polyurethane. The inventors discovered that polyurethane was able to provide an exceptionally strong and uniform bond between the laminate and the transparent plastic substrate 103 . The bonding process can be accomplished by placing a sheet or layer of polyurethane between the first and second substrates and applying sufficient heat to the sheet of polyurethane, for example, enough to melt the sheet of polyurethane. Advantageously, the polyurethane has a relatively low melting point, generally below the melting points of the first and second substrates. During the bonding process, pressure may also be applied between the first and second substrates to bring the polyurethane sheet into intimate contact therewith during the bonding process.

The first substrate may comprise polycarbonate or acrylic or another similar material. In other embodiments, any suitable adhesive, which may or may not be a sheet, may be used to bond the first and second substrates together.

The combination of clear plastic material and laminate provides a protective structure that is thinner than a structure formed from only a clear plastic layer such as polycarbonate or acrylic, but provides a similar level of protection.

9-12 show various views of the visor of a helmet employing the structure of the embodiment of the protective helmet described above.

Referring to Figures 9-12, a face mask 201 includes a base 203 formed from a transparent plastic material, such as polycarbonate, and a second base 205 having multiple layers of high performance composite material. As shown in Figures 10-12, a generally opaque second substrate 205 is affixed to a portion of the first substrate 203, which in this embodiment defines a window 209 for allowing light to pass through.

The mask also includes another base 211 on the front surface of the first base 203 . The additional substrate 211 includes a transparent material, such as polycarbonate or acrylic resin. This additional substrate may be secured to the first and/or second substrate by any suitable means such as rivets 213, 215 or other mechanical elements or by adhesive. A spacer 217 may be provided between the first and additional substrates 203, 211 to prevent their direct contact.

In a particular embodiment, the first substrate 203 comprises polycarbonate and the additional substrate 211 comprises an acrylic material. The additional substrate 211 extends over a defined portion of the first substrate 203, in particular over the area opposite the viewing window 209, for enhancing the level of protection of the transparent area of the mask. In particular, acrylic, which is harder than polycarbonate, provides a hard impact surface against explosive fragments, enabling the fragments to decelerate rapidly and break into smaller pieces. The combination of polycarbonate layers and high-performance material laminates can greatly reduce the amount of acrylic resins used in masks that are heavier than polycarbonate, and eliminate the need for acrylics to be used on the entire outer surface or impact surface of the mask. In this example the acrylic is only used in the clear areas of the mask, making the mask lighter. At the same time, the combination of polycarbonate layers (or other transparent plastic layers) and high-performance material laminates can reduce the thickness of the mask, which can reduce the forward tilt of the mask. This helps the helmet's center of gravity move back for better balance.

Although in the embodiment shown in FIGS. 9-12, the second substrate 205 is placed behind the first substrate, in other embodiments, the order can be reversed, ie, the second substrate is placed in front of the first substrate.

Beneficially, compared with the face shield of the original structure, the face shield adopting the combination of the first base and the second base described herein can greatly reduce the weight of the face shield, so that the helmet is lighter, and the weight of the front of the helmet is reduced, The balance is improved and the forward tilt moment of the helmet about the center of the helmet is reduced.

The protective helmet structure described or defined in this specification can be used as a protective helmet structure for protecting any part of the body.

Further embodiments of the multifunctional head protector

As noted above, in embodiments of the present invention, the head protector may comprise a helmet adapted to be used with a number of interchangeable visors, each of which has a different function, thereby increasing the versatility of the system, and Costs are reduced due to the use of only one helmet. In another embodiment, the mask may comprise the above-described mask for protection against explosive munitions, a second mask having a relatively large transparent area for easy search and identification, a third mask adapted to fit a respirator for protection against chemical, biological or nuclear contamination any of these. These masks are shown in Figures 13A, 13B, 13C.

Figure 13A shows an EOD mask mounted to a helmet, Figure 13B shows a search and identification mask mounted to a helmet, and Figure 13C shows a CBRN mask mounted to a helmet. EOD masks are the same as those described above. Search visor 509 has a relatively large transparent area (eg, made of polycarbonate) to provide a large viewing area for the user. In one embodiment, at least one of the masks includes a light source 511 that may be mounted on or proximate to the upper edge of the mask (or at any suitable location on the mask) so that the wearer Ability to search in the dark or in poor light without needing to hold a flashlight. Examples of light sources are described later.

The CBRN mask 515 includes a transparent screen 517 and a shaped protective portion 519 beneath the screen for placing a respirator such as a gas mask. Transparent screen 517 may comprise any suitable material, such as polycarbonate and/or acrylic, and in one embodiment, lower portion 519 comprises a laminate made of ballistic resistant material. Advantageously, this allows the lower protective portion to be formed into any desired shape, including angled shapes, which would be difficult with a single layer of polycarbonate or acrylic.

In this embodiment, the visor comprises a base 521 made of polycarbonate towards the inside of the visor housing the couplings and the transparent screen 517 for coupling it to the helmet. The mask comprises a second substrate of ballistic resistant fibers laminated to a first substrate forming a frame around the transparent screen and including the respirator cavity 519 . A further layer of acrylic or polycarbonate transparent material is placed over the transparent screen formed from the first substrate to provide further additional protection. In one embodiment, the respirator chamber is sized and shaped to accommodate a variety of different types of respirators. Each visor can be coupled to the helmet using the same coupling mechanism. The coupling mechanism allows the interchangeable visor to be removed by hand, and in particular by an easily accessible and operable mechanism located on the outside of the helmet, allowing the visor to be removed and replaced while the helmet is being worn. In one embodiment, the mechanism allows the visor to be removed with a simple sliding motion and automatically secures the visor to the helmet when the visor is rotated relative to the helmet into the use position. The coupling mechanism will be described below with reference to FIGS. 14A to 14E.

mask connection

Another embodiment of a visor attachment mechanism for releasably attaching a visor to a helmet is shown in Figures 14A to 14E. The coupling mechanism includes a mounting plate 551 connected in any suitable manner to the side of a helmet shell 553 having a protrusion 555 extending therefrom for pivotally mounting the visor about an axis 557 . An elastic member 559 is provided around at least a part of the protrusion 555, so as to realize the radial movement between the mask and the protrusion for absorbing the impact between the mask and the helmet. The mounting plate further includes first and second protrusions (or lugs) 563, 565 extending therefrom from either of the protrusions 555. As shown in FIG. The coupling mechanism further includes an outer plate 567 spaced from the mounting plate 551 such that a gap 569 is formed therebetween for receiving a portion of the mask. Alternatively or additionally, protrusions or lugs may protrude from the outer plate 567 as well.

The coupling mechanism further includes an open-ended slot 571 formed in the side portion 573 of the visor which terminates in the support protrusion 555 when the side portion 573 of the visor is inserted into the gap 569 between the mounting plate 551 and the outer plate 567. at the bearing edge 575 of the resilient portion 559 .

The coupling mechanism further includes second and third grooves 577, 579 formed in the side portion 573 of the visor for receiving the first and second protrusions 563, 565, which cooperate together when the visor is rotated about the axis 557 relative to the helmet. Keep the visor on the helmet.

As shown in FIG. 14A, in order to install the visor on the helmet, the visor should be facing the helmet and located on the helmet, so that the open-ended slot 571 can be aligned with the first and second protrusions 563, 565 and the protrusion 555. . Next, the visor is lowered in the direction of arrow A (FIG. 14A) into the gap 569 between the mounting plate 551 and the outer plate 567 so that the protrusions 563, 565 and protrusions extend through the open-ended slot 571 to the bearing edge 575. Only when the elastic part of the protrusion 555 is engaged. The mask is then rotated forward as indicated by arrow B (Fig. 14A) to the operable position. Forward rotation of the visor allows the first and second protrusions to pass through the second and third slots 577, 575, thereby retaining the visor on the helmet.

A locking system (shown in Figures 20A to 20D, described below) may be provided to enable the visor to be locked in both the open and lowered positions of the upper portion of the helmet. When the mask is rotated from its lowered position to its raised position, the locking mechanism may be configured to automatically lock the mask in the raised position, which locked raised position may advantageously be located in the position where the slot is located. Straight forward so the mask can be lifted and removed. In this case, in order to remove the visor from the helmet, the visor must be rotated backwards from its locked, raised position.

In other embodiments, the mask retaining means may comprise any suitable mechanism, wherein in one embodiment, the protrusions may be eliminated and the retaining means may only be provided with protrusions having a specially shaped surface which can only be oriented in one direction and not in the other. Orientation passes through slots so that the visor can be rotatably held on the helmet.

In other embodiments, the retaining means may comprise only one or more than two protrusions which may be provided either on the mounting plate or on the inner side of the outer plate.

The same coupling mechanism can be provided on both sides of the visor and helmet, and the locking mechanism can be provided on only one side or can be provided on both sides.

What Fig. 15 A shows is the perspective view of the head protector of the EOD helmet that adopts EOD mask in different positions; What Fig. 15 B shows is the front view of the EOD helmet shown in Fig. 15 A; What Fig. 15 C shows is its side view ; Figure 15D shows its top view; Figure 15E shows its back view; Figure 15F shows the helmet shown in Figure 15A from below the view.

Figure 16 is a perspective view of the head protector of the search helmet with the search visor in different positions. In this embodiment, the helmet portion is the same as that shown in Figures 13A to 15F, except that the functionality of the helmet is changed by replacing the EOD visor with a search visor.

What Fig. 17 A shows is the perspective view of the head protector of the CBRN helmet that adopts CBRN mask in different positions; What Fig. 17 B shows is the front view of the helmet shown in Fig. 17 A; What Fig. 17 C shows is its side view; Fig. 17D shows its back view. In this embodiment, the helmet portion of the head protector is the same as that shown in Figure 15A, except that the functionality of the helmet is changed by replacing the EOD or search mask with a CBRN mask that can store a breathing mask.

What Fig. 18 A shows is through the partial sectional view of helmet to its rear portion; What Fig. 18 B shows is through the partial sectional view of helmet to its rear portion; What Fig. 18 C shows is through the perspective sectional view of helmet front portion; Fig. Shown at 18D is a cutaway side view through the helmet.

Shock-absorbing installation

19 to 20 show a helmet with a visor mounting system according to another embodiment of the present invention. Figure 19 shows a section through a portion of the helmet, and Figure 20 shows a side view of the helmet.

Referring to Figures 19 and 20, a helmet 1 includes an outer shell 3 and a shield 5, which in this embodiment includes a visor disposed on the front of the helmet (in other embodiments, the shield includes a shield provided elsewhere around the wearer's head). any other parts for additional protection). The helmet further comprises a coupling 7 for coupling the visor 5 to the shell 3 and enabling movement of the visor relative to the helmet. The shock absorber 9 is coupled to the coupler 7 and is arranged to enable the visor 5 to move relative to the housing 3 independently of the coupler 7 .

In this particular embodiment, the coupling 7 comprises pins or bolts pivotally coupling the visor to the housing and the shock absorber 9 comprises a bushing of elastic material at least partially surrounding the coupling 7 . The mounting block 11 is located between the exterior of the housing 3 and the mask 5 and has a cavity 13 for accommodating the elastic bushing 9 . As shown in Figure 19, the cavity may extend from one side of the mounting block to the other side, or partially pass through the mounting block. In this embodiment, the pins 7 also serve as fixing means for fixing the mounting block 11 to the housing and pass through holes 15 formed in the housing. The pin has an enlarged portion 17 positioned on the inside of the housing to prevent the pin from coming out of the hole 15 . The other end 19 of the pin includes a threaded portion 21 for receiving a nut 23 to secure the mounting block and mask assembly to the housing.

In this embodiment, as shown in FIG. 20 , the shock absorber 9 is arranged to enable the visor 5 to move in a direction toward the inside of the helmet or toward the rear of the helmet as shown by arrows 25 , 27 in FIG. 20 . In this embodiment, as shown in FIG. 19 , the visor can be moved in all directions transverse to the pivot axis 29 when the shock absorber 9 completely surrounds the pin. In other embodiments, however, the shock-absorbing mounting may also restrict relative movement between the mask and housing to one direction or a limited range of directions.

Beneficially, the shock-absorbing mounting system provides some release mechanism for the visor or other shield to disengage from the helmet shell, thereby reducing shock or momentary force transfer from the visor or shield to the shell. When the front of the helmet is subjected to the shock wave of the explosion, such a structure is conducive to reducing the backward acceleration of the shell and the corresponding helmet user's head, and can reduce the risk of head trauma or concussion.

In other embodiments, the mounting block 11 may not be used, and the mask may be attached to the housing by coupling and shock absorbing means provided between the coupler and the housing or between the coupler and the mask.

In another embodiment, shock-absorbing means such as elastic members can be placed between the pins or bolts 7 and the mask 5, so that, for example, the shock-absorbing system is supported by the mask instead of or in addition to the mounting block and/or the housing superior.

In general, the shock absorbing means can move the mask relative to the housing and limit the speed of relative movement or translation, and can comprise any suitable element or device.

In another embodiment where a visor or other shield is slidably mounted to the helmet shell, a shock absorbing element or system may be provided between the slide mount and the shell and/or between the visor and the slide mount.

Embodiments of this mounting system may be used with any of the head restraint systems described in this specification.

locking mechanism

Further embodiments of mask locking systems are described below with reference to FIGS. 21A to 21C and 22A to 22D.

Figure 21A shows a helmet according to another embodiment of the present invention. Helmet 31 includes an outer shell 33 and a visor 35 pivotally coupled to the outer shell by a hinge or pivot 37 and capable of being raised and lowered. A locking mechanism 39 is provided to enable the mask to be locked in at least one of a lowered position and a raised position. One embodiment of the locking system is shown in more detail in Figures 21B and 21C. The locking system 39 comprises a rotating cam 41 rotatably mounted to the housing 31, and a manually accessible button 43 which enables the cam to be rotated by hand. In this embodiment, a cam mounting block 45 is provided for mounting the cam 41 to the helmet shell, the cam mounting block comprising any suitable means of rotatably supporting and retaining the cam. The mask 35 has first and second holes 49, 51 formed therein, each hole having an opening 53, 55 formed in a side of the hole so that the cam 41 is received therein. The shape and size of the holes 49, 51 allow the cam 41 to rotate within the hole and the cam cannot move from the hole through the opening, thereby locking the visor in a fixed position relative to the helmet shell.

In this particular embodiment, the cam comprises an elongate member with a width sufficiently small to allow the cam to pass through the opening into the bore. In other embodiments, the cam may be any other suitable shape, and may include discrete protrusions that are spaced (ie, eccentrically located) in a radial direction relative to the cam axis 57 .

Beneficially, the provision of such a cam lock system allows for rapid locking or unlocking of the mask (requiring only a fraction of its revolutions between locking and unlocking) compared to other locking mechanisms that require multiple turns of the locking nut. Beneficially, the cam system allows for a substantial reduction in the width or profile "W" of the mounting block compared to a locking mechanism that uses a screwing system where the mounting block needs to be deep enough to accommodate the excess screw to lock the screw so that the mask is fully clear .

Another embodiment of a locking mechanism for locking a visor to a helmet shell is shown in Figures 22A to 22D. Figure 22A shows a top view of the locking system, Figure 22B shows a plan view of the locking system, Figure 22C shows a cross-sectional view through the locking system, and Figure 22D shows a perspective view of the locking system. The locking system shown in Figures 22A to 22D can be used in any helmet disclosed in this specification, as well as others, in place of the locking mechanism described above with reference to Figures 21A to 21C. Referring specifically to Fig. 22C, the locking system 71 includes a lock 73 that prevents movement of the visor relative to the shell of the helmet, and a hand-accessible press 75 that is released by pressing the lock, thereby releasing the visor from the locked position. In one embodiment, the locking system includes a mounting block 77 that facilitates placement of the lock assembly and has a mounting surface 79 for mounting to a helmet shell (not shown). The mounting block includes a recess 81 for receiving the lock 73 . A biasing member 83 is used to push the lock 73 out of the groove 79 and includes a biasing spring located in the groove 81 . The locking system further includes a mounting member 85, which is fixedly mounted on the mounting block 77, and a hole 86 for receiving the pressing member (such as a button) 75 is formed therein. When the button is released, the mount 85 retains the movable member or lock 73 at least partially in the groove 79 and guides the button 75 and lock 73 to move relative to each other. During use, the mask 35 is positioned between the mount 85 and the mounting block 77 and has at least one aperture, such as the apertures 227, 229 of the embodiment of the mask shown in Figures 11 and 12, corresponding to the position in which the mask is locked. . The holes are flanked by openings 231 , 233 ( FIGS. 11 and 12 ) that are large enough to accommodate the diameter of the button shaft 87 but smaller than the diameter or width of the lock 73 .

During operation, the button 75 is pressed, the lock 73 moves into the groove 81, and the button shaft 87 passes through the opening of the hole in the mask, releasing the mask from the locked position, allowing the mask to be raised or lowered as desired. When the mask is in a position where it can be locked relative to the housing, releasing the button causes the locking member 73 to move into the hole of the mask under the bias spring force, thereby locking the mask in this position. Beneficially, when the lock in the retracted position is no longer aligned with the mask aperture, the mask can engage the shoulder 89 of the lock 73 so that the button remains depressed until the mask is in the second locked position or Return to the original locked position where the mask holes are again aligned with the lock. This configuration allows the visor to move into the locked position without having to press the button again, or to continue to press the button as the visor moves from one locked position to another.

Beneficially, locking structures according to embodiments of the present invention can be used to open, move or relock the mask with one hand and reduce the width or profile of any mounting blocks used therewith.

In the embodiment shown in Figures 22A to 22D, the mounting block 77 also includes a mount that pivotally attaches the visor to the helmet shell. Beneficially, the pivot mount includes shock-absorbing means between the mount block 77 and the visor 35 for reducing transmission from the visor to the mount and thus to the helmet shell or Vibration in the opposite direction.

In one embodiment, the mounting assembly may optionally include a clip 91 for holding a light source such as a flashlight or flash (not shown) or other device such as a camera. A mount similar to that shown in Figure 7 may be provided for mounting the microphone.

helmet retention system

An embodiment of a helmet retention system is shown in Figures 23A to 23E. Referring to Figures 23A to 23E, the helmet retention system 301 includes first and second strap guides 303 and 305 mounted on each side of the helmet at locations to support a strap that passes under the wearer's chin. The retention system comprises a belt 307 passing through and between belt guides 303, 305, the belt portion between the belt guides 303, 305 forming a chin strap 309. The retention system further includes a support 311 coupled to the rear of the helmet and interacting with a portion of the wearer's head or neck in use. In this embodiment, the support includes flexible members 313, 315 that movably couple the support 311 to the helmet. The belt 307 extends rearwardly towards the support member 311, and the retaining system includes two tension members 317 (only one of which is shown in FIGS. 317, it is arranged such that the length of the belt 307 protruding from the support 311 through the belt guides 303, 305 is shortened. A loop 319 or other feature or feature is provided on one or both tension members to facilitate gripping the tension members.

In this embodiment the tensioning member is part of the belt 307 and the retention system comprises an additional belt guide 321 connected to the support 311 . Each belt guide 321 includes a cylindrical guide 323 and a rod 325 extending from the cylindrical guide and forming a hole along its length. The belt is passed around the cylinder and through the hole, thereby changing the direction of the belt, and by tightening the part of the belt protruding from the other side of the additional belt guide in the direction towards the front of the retention system, it is possible to make it protrude from the additional belt guide 321. And the length of the belt passing through the first and second guides 303, 305 is shortened. In use, this one action both tightens the strap around the helmet wearer's chin and simultaneously positions the support against the back of the head or neck, thus in contrast to other retention systems that require separate adjustment of the chin and nape supports. Compared to this, the system drastically reduces the number of steps required to secure the helmet in place.

Referring to Figures 23A to 23E, the rod 325 is mounted on the cylinder so that when the belt is tightened, the space between the rod and the cylinder closes, compressing the belt between the rod and the cylinder. When the belt is released, the friction between the belt and the guide prevents the belt from slipping back through the guide, thereby maintaining the tension between the additional belt guide and the portion of the belt between the first and second belt guides 303, 305. tension. Higher friction on the surface of the cylinder can be achieved by providing a surface structure such as a knurled surface in one embodiment.

A release mechanism may be provided to open the belt guide 321 . In this embodiment, the belt can be released by pulling on the lever to increase the gap between the lever and the guide and loosen the belt. A pull ring 326 extending from the rod 325 may be provided to facilitate pulling the rod and releasing the strap. The shape and characteristics of the pull ring 326 can be different from the tension member 317, so that they have different tactile and visual senses, so that users can easily distinguish them.

A connector may be provided to releasably connect one part of the belt to another part of the belt, the connector being located within the length of the belt extending from the support through the belt guides 303,305. In the embodiment shown in Figure 23A, the belt connector 327 is arranged on the portion of the belt between the first and second belt guides 303, 305 and is positioned to one side so that, in use, the connector Position to the side of the face rather than under the chin. This positioning is easier to access and more comfortable. Beneficially, this embodiment provides two independent release mechanisms for removing the helmet. Connector 327 includes a quick release connector to facilitate removal of the helmet in an emergency or for convenience. In the embodiment shown in Figure 23A, a chin pad 330 is provided for added comfort. In this embodiment, the chin pad is sized to protrude over the jaw and behind the connector 327 to prevent direct contact between the connector and the face, which can be more comfortable.

Shown in Figure 23B is another embodiment of the retention system, which includes two separate chin pads 329, 331, each of which is slidably mounted on the belt 307 so that its position can be adjusted for different uses By.

Shown in Figure 23C is another embodiment of the retention system, which also includes two adjustable chin pads 329, 331, and a connector 327 positioned between the two so that in use, the connector rests on the chin. under. Figures 23D and 23E show a more detailed portion of the helmet retention system, in particular, Figure 23D shows a rear view of the support and associated belt guide assembly, and Figure 23E shows the implementation shown in Figure 15D Example top view.

Figures 23D and 23E show in more detail each additional belt guide which may also be used as an additional belt guide in the embodiment of Figures 23A to 23C. Each belt guide includes a roller or knurled buckle having a substantially rectangular ring 324 and a cylindrical member 323 slidably received on both arms of the ring through holes. One side of the ring is fixed to the support 311 and the other side 325 provides the rod, while the cylinder provides the clamping force for clamping the belt 307 when the belt 307 is tightened, thereby pushing the cylinder 323 towards Lever. When the clamping force is released, as shown in FIG. 16, the rod simply swings away from the support 311, causing the cylindrical member to slide off the rod 325, expanding the gap between them, thereby releasing the belt 307.

In this embodiment, clips 343, 345 are provided on each flexible member 313, 315 for attaching and removing the helmet retention system to and from the helmet. In this embodiment, each clip has a T-shaped hole to mate with a corresponding T-nut mounted on the helmet.

Advantageously, the chin strap may be worn under the chin or jaw, away from the front of the chin, to allow breathing apparatus such as a gas mask to be accommodated in the helmet.

A further embodiment of the retention system

Figures 24 and 24B show another embodiment of a helmet retention system which is in some respects the same as the retention system shown in Figures 23A to 23E, but with some notable differences. The retention system includes connectors 351 , 353 on either side thereof for releasably attaching a chin cover 355 or a chin strap 357 . Beneficially, a chincup or chin strap can be used for the retention system as required or desired by the user. In addition, since the chin cover cannot be shared with respirators or gas masks, the submandibular strap can be used in place of the chin cover when the respirator is used. The connector in this particular embodiment is a miniature seat belt type buckle, the male connector could be on the retention system or the chin cover or belt, the female connector on the other, or vice versa.

Another important difference between the retention system shown in Figures 24A and 24B and that described above in connection with Figures 23A to 23E is the nape of the neck support 361, as shown in Figure 24C. In this embodiment, the straps 363 , 365 connecting the nape support 361 to the back of the helmet project from the nape support at an angle (not substantially perpendicular), are directed and meet at a common area 367 . Adjustable straps 360 , 371 projecting downward from nape support 361 at an angle (not horizontally) are also guided to meet at common area 367 . The inventors have discovered that a configuration in which the support and adjustable strap are directed to the common area of the nape support prevents the nape support from twisting or twisting when the adjustable strap is tightened to secure the helmet to the wearer's head. Buckle together. In addition, the adjustable strap has a downward angle so that the adjustable strap can be pulled forward and backward instead of pulling the adjustable strap sideways as before, and the former action requires less force and is more natural .

In this embodiment, adjustable straps 371, 369 extend from the nape of the neck support 361 to the lower portion of the retainer 373 and up to the connector or fixture 375 to secure the retainer to the side or front portion of the helmet superior. In this embodiment, the lower portion includes a slip ring 377 coupled to the chin cover or strap connector 351 .

In this embodiment, the retainer also includes side supports or pads 381, 383 which, in use, are placed against the sides of the user's head or face for greater comfort and to provide additional support for mounting the retainer to. Surface area on the human body. The side pads 381, 383 also keep the upwardly extending portion 370 of the adjustable strap away from the wearer for greater comfort. This side support optionally includes speakers for audio communication.

Figure 24C shows a chin cover according to another embodiment of the present invention, which may be used with the helmet retention system described with reference to Figures 24A and 24B, or with any other helmet retention system. The chin cover 340 includes a chin pad 342 having holes 344 , 346 at or near the ends 348 , 350 for coupling the chin pad 342 to connectors 351 , 353 . The chin cover further includes upper and lower straps 352 , 354 from the connectors 351 , 353 through the holes 344 , 346 and around and against the front of the pad 342 . An upper strap 352 protrudes upwardly from the holes 344, 346 and is positioned against the position of the upper portion 356 of the chin pad 342, and a lower strap 354 protrudes generally downward from each hole and is positioned against the chin pad The position of the lower part 358. One or both straps are held in one or more positions along its length to ensure that the straps do not slide down the middle 360 of the chin pad. In this embodiment, the first and second belts 352, 354 are formed from the same belt, while in other embodiments the upper and lower belts may be formed from separate belts. In this particular embodiment, the upper and lower straps are formed by holding the middle of the continuous strap against the lower portion of the chin pad and through the holes, through the corresponding holes 366, 368 in each connector 351, 353 at the ends of the straps. The upper strap 352 is formed by tying a knot at each end 362, 364, passing back through the corresponding aperture 344, 346, and joining the ends 362, 364 together by sewing or any other suitable means.

Providing a split strap where the upper portion of the strap is positioned against the upper portion of the chin pad and the lower portion of the strap is positioned against the lower portion of the chin pad has been found to greatly improve the The stability of the chin cover was improved, and in particular, it was found to provide a more secure fit and prevent or reduce the tendency of the chin cover to detach from the chin. In use, typically the upper strap is positioned above the chin protrusion and the lower strap is positioned below the chin protrusion. Beneficially, the chin pad can be selected from a relatively flexible material and/or have a non-slip surface to prevent the chin cover from sliding and keep it in the desired position.

The chin cover may comprise any suitable material. In various embodiments, the chin cover or liner may comprise a thermoplastic elastomer having a soft durometer, having any or all of the following properties: hypoallergenic and/or fire resistant and/or chemical resistance properties. The material may comprise a grade of Santopreme ^™ , such as medical grade Santopreme ^™ .

comfortable lining

Embodiments of the head protector may provide an adjustable lining within the head cavity of the helmet to enable the size of the head cavity to be adjusted to suit persons with different head sizes and/or shapes. Beneficially, this allows only one size of helmet shell (and other components of the head protector) to be made, thereby reducing production costs. This comfort liner can also be removed from the head cavity and can be rinsed or cleaned or used with another helmet. Embodiments of the liner are shown in Figures 25A and 25B, with further embodiments shown in Figures 25C to 25E.

Referring to FIG. 25A , the liner 601 of the helmet is cup-shaped with a side wall 603 , a lower periphery 605 and an upper crown 607 connected to the upper end 609 of the side wall 603 . A plurality of retainers (retainers) 610, 612, 614, 616, 618 are provided around the side wall 603. In this embodiment, the retainers are arranged on the sides of the side walls and are located in the helmet head cavity, so The inner wall is called the lining. In other embodiments, however, one or more retaining rings may be disposed about the inner wall 620 of the liner, facing the user's head.

The sidewalls of the liner may be of any suitable material, preferably a cushioning material. The side walls have grooved plate-like portions extending from the upper portion to the lower portion thereof, which (shown in dashed lines) may be formed by stitching 627 . The retaining ring may be formed from a strip of material extending along the inner wall of the liner, spaced portions of the retaining ring strip being attached to the liner to form pockets 631 therebetween. Advantageously, the retaining ring strap can be secured to the liner by the same sewing as provided with the grooved panels 623,625.

In order to adjust the size of the head cavity within the liner, fillers may be provided inserted into the retaining rings 612, 614 at selected locations around the liner to achieve the most suitable head cavity size and shape for the individual. The padding may consist of any suitable material, preferably a resilient material such as a suitable foam or other material. The retaining rings 612, 614 may also be made of any suitable material, including resilient materials such as foam. The lining can also be constructed of fire resistant material to meet the required safety standards.

To secure the padding into the helmet, in one embodiment, impact-absorbing padding that is placed between the liner and the helmet shell is used. Referring to Fig. 25B, a strip of material 641 is placed on the impact-absorbing padding 643 and fits closely with the lower portion of the padding. As the underside of the padding 643 widens, the strap is pulled towards the edge, holding the strap against the padding so that the strap cannot be easily pulled away from the edge. The retaining strap includes attachment means for attaching the liner to the strap, which in one embodiment may employ a zipper. In the embodiment shown in Figure 25B, one side of the zipper 645 is secured to the retention strap 641 and the other side of the zipper 645 is attached to the liner, as shown in Figure 25A. During production, the retention strap 641 may be held in place on the impact absorbing padding 643 before the composition is inserted into the helmet shell.

In other embodiments, the filler retaining ring may be formed by any other suitable means and may extend around the entire circumference of the liner or over only a portion thereof.

The crown 607 can also be provided with one or more retaining rings for retaining the padding so that the height of the head cavity can be adjusted to suit different wearers.

Embodiments employing other alternative methods of attaching the liner to the impact-absorbing filler will now be described with reference to Figures 25C to 25E.

Illustrated in Figure 25C is a comfort liner 601, and impact absorbing padding 643, in accordance with another embodiment of the present invention. The comfort liner 601 is the same as described above and shown in Figures 25A and 25B, and like parts are designated with like reference numerals. In this embodiment, the comfort liner extends externally with a peripheral band (or ring or flange) 603 positioned on its liner bottom edge with a plurality of spaced apart fasteners 632 . The impact absorbing padding 643 has a plurality of complementary fasteners 644 located around its lower edge 646 for mating with the fasteners 632 of the liner. Both the liner and absorbent padding fasteners can be male/female in structure, and the female parts can be attached to the comfort liner and the male parts to the absorbent padding, or vice versa. In one embodiment, the female fastener includes a button and the male fastener includes a corresponding button stud. In this embodiment, the liner is secured to the impact-absorbing padding by simply pressing together the fastener pairs on the liner and padding. One or more tabs or loops 643 are provided on the comfort liner to facilitate easy access to remove the liner from the padding when the comfort liner is attached to the shock absorbing padding. In one embodiment, the tab or loop may be located on the back or side of the helmet so as not to obstruct the wearer's face.

Figure 25D shows another means for releasably securing the comfort liner to the impact-absorbing padding. In this embodiment, the comfort liner 601 (same as above) has an outwardly extending peripheral band (or loop) 603 on a lower edge 605 supporting a plurality of fastening strips 650 of Velcro ^™ . Complementary fixing strips 652 are provided near the peripheral edge 646 of the shock absorbing padding 643. In this embodiment, the fixing strips may be attached to one or more supports 654 secured to the outer edge 646 of the padding by any suitable means. (in this embodiment, the front and rear supports), including means to allow the supports to be removed or replaced. In this embodiment, a plurality of threaded fillers 656 are mounted near the edge of the shock absorbing filler, and the supports are connected to the fillers by nuts received in the threaded fillers 656 .

Figure 25E shows an alternative structure for securing the comfort liner to the impact-absorbing padding, in some respects the same as that shown in Figure 25D. As described above, the comfort liner 601 has an outwardly extending peripheral band (or loop) 630 positioned on its bottom edge 605 supporting the fastening strip 660 . This embodiment includes a front fastening strip and two side fastening strips extending behind the liner. Complementary retaining strips 664 are mounted to the outer edge 646 of the impact-absorbing padding 643 by one or more supports, in this case a front support 668 and a rear support 670 . The support is secured to the filler in the same manner as the embodiment shown in FIG. 25D (i.e., by screws and threaded filler), but in this embodiment the screws also pass through holes 672 in complementary fixing strips 664. . Complementary fixing strips may also be fixed to the support with adhesive or other auxiliary fixing means. In this embodiment, the fixing strips create a more continuous connection between the liner and filler than in the embodiment shown in Figure 25D, and the screws passing through the fixing strips increase the strength of the connection between the fixing strips and the filler, and further Increased their durability. In the embodiment shown in Figure 25D, the fixation strips may comprise Velcro ^™ or any other fastener with interacting surfaces. In any of the liner embodiments described above, the peripheral band or ring 630 may be continuous or discontinuous.

helmet control system

An embodiment of a control system for a helmet or head restraint system is described below.

26 and 27 are perspective views of a helmet according to another embodiment of the present invention. Referring to FIGS. 26 and 27 , a helmet 401 includes a shell 403 and a control unit 410 . The helmet further includes electrical systems that provide various functions for assisting the wearer, either in the control unit, in other parts of the helmet, or both. The control unit 410 is used to control the functions of the electric system such as the power delivered to the system. The control system includes a monitoring system for monitoring the condition or function of the electric system and may provide an output display.

Advantageously, the control unit is releasably mounted to the helmet shell to allow the control unit to be removed. This makes it easy to replace a failed control unit and return the helmet to the field in serviceable condition without having to send the entire helmet to a repair center, in which case the helmet would be unusable for a long period of time. In one embodiment, the control unit may be slidably mounted to the housing by any suitable means, and it includes a retaining and sliding guide system 412 . The control system may include one or more electrical input/output terminals that interface with corresponding electrical input/output terminals 414 mounted on the helmet shell.

In one embodiment, the control unit includes one or more electric fans or other impeller means 416, 418 for providing circulating air to the interior of the helmet, for example through vents 420, 422. The helmet may include a microphone 415 and/or speaker system (as shown in FIGS. 24A and 24B ) and visor 405 . In preferred embodiments, the inner surface of the mask is treated with a moisture or condensation reducing agent that reduces the need for vented air or eliminates vented air altogether, thereby preventing condensation on the inner surface of the mask. This reduces the amount of circulating air (eg, CFM) required in the helmet, thereby reducing energy consumption, and the power source (eg, motor) can be smaller compared to existing systems. Reduced airflow requirements also allow the motor to be quieter in use, allowing the motor to be mounted close to the helmet shell without causing severe noise and interfering with audio equipment.

The helmet may include indicators for indicating the status and functions monitored by the control unit, and the indicators may include audio indicators, visual indicators, or tactile indicators, or any combination of the above indicators. One or more indicators may be in the control unit and/or in other parts of the helmet.

Other views of the helmet in Figures 26 and 27 are shown in Figures 28 to 30. The helmet may include one or more of the further features disclosed in this specification.

Basic control module and remote control module

Embodiments of the head restraint include a basic control module mounted to the helmet for controlling the electrical functions associated with the head restraint. The head protector may alternatively or additionally include a remote control module for controlling electrical functions related to the head protector, and the remote control module may be installed at a position away from the head protector when in use, such as on an arm or a leg , or on the torso. If two modules are provided, both modules can be used to control at least one of the same electrical functions, so that if one control module fails, that particular function can also be controlled by the other module. Advantageously, the remote control module includes an in-use visible panel including a keypad or other input device, and a visual function indicator. The remote control module may include means for securing the control module to the arms, legs and torso.

The embodiment shown in FIG. 31 includes a head restraint 801 having a base control module 803 mounted thereon and a remote control module 805 connected to the base module 803 by a cable 807 . The cable is used to provide power from the helmet to the remote, while transmitting data communication signals so that the remote can control an unlimited number of features in the helmet. The controller can also interrogate the helmet's electrical components to receive status information. The remote control includes a cavity or housing 809 that houses the required electronic circuitry as well as a user interface 811 having a number of keypads or switches 813 for receiving user input to control the system, and one or more indicators, which Indicators include indicator lights and/or alphanumeric displays that display system status information to the user.

Figure 32 shows the main components of the remote control. The remote control includes a user interface 811 (described above), a microprocessor 815 , a transceiver 817 and a connector 819 . Microprocessor 815 is used to control the remote control unit. Specifically, the microprocessor is used to monitor the user's keystrokes, actuate status indicators, communicate with the helmet's basic control module to forward instructions and obtain status information. In one embodiment, a simple serial communication protocol is used to effectively communicate with the electronic base module, thereby reducing the number of wires that need to be connected to the helmet. Reducing the number of wires makes the system more durable and less prone to failure.

The transceiver receives serial data from the processor and drives the cable with signals consistent with the desired communication standard. In one embodiment, the RS232 communication standard may be used, which provides an extremely reliable communication link that is immune to electrical interference and electrostatic discharge, especially for operation in harsh environments. Connectors carry signals between the transceiver and the helmet base module, and may include a simple RS232 serial data connection for power and remote control signals. As mentioned above, using a serial connection limits the number of wires required, and using the RS232 electrical standard provides a high degree of noise immunity and ESD protection.

An example of a remote controller is shown in Figures 33A and 33B. The remote control 805 includes a cavity 811 and a strap 813 for securing the remote control to the wearer's arm. One end of the belt is secured to one side of the cavity and the other end is looped through a slot 825 on the other side of the controller cavity. Fasteners, such as fastening strip 827, are provided on the outer surface of the belt on one side thereof, and complementary fasteners, such as fastening strip 829, are provided on the inner surface of the other end of the belt, which can be tightened by folding the belt back onto itself. Fasten the belt so that the fasteners are joined together.

In another embodiment, the remote control module can be carried in a bag with a window or opening to allow the user to see and access the display and control panel. An example of this structure is shown in Figure 34.

Referring to Fig. 34, the sleeve 901 includes a bag (or holder) 902 into which is inserted a remote control for controlling one or more functions related to the protective helmet. The pouch 902 has a window or open area 904 that enables the user to see or access the user interface 905 of the controller. The user interface includes one or more visual indicators for indicating the relevant status of the helmet or controller (or other device) and one or more keypads or buttons for receiving user input commands. Bag 902 includes holes 906 for receiving communication cables 907 . Communication cables may run along the perimeter of the boot opening of the boot 901 and be returned to the helmet along the interior of the boot. In another embodiment, the cable 907 can be routed directly to the controller through the inside of the sleeve. The opening or window may include a transparent protective layer to protect the front of the remote control.

Another example of a base control module and a remote control module is shown in Figures 35A-35B. The base and/or remote control modules may include one or more of the following control functions.

1. Climate regulated fan, including speed and turbo boost (limited by time)

2. Speaker volume control

3. Searchlight control on/off, and/or brightness level

4. Mask defogger (may include a heater associated with the mask)

5. Control panel backlight (illuminates control functions in low light)

The basic control module and the remote control module can control any other functions.

A basic control module mounted to the helmet may include a power source to drive various electrical devices associated with the head restraint, and may store enough power to eliminate the need for an auxiliary portable power source.

Shown in Fig. 35D is the embodiment of electric module of protective helmet. Module 250 includes a cavity 252 mounted on the rear of helmet 253 for housing circuitry 254 . The cavity is electromagnetically shielded to prevent the circuit from interfering with external devices or the external device from interfering with the circuit. The cavity is hermetically sealed to prevent moisture from entering.

The module also includes air impeller cavities 255, 256, which in this embodiment are mounted on either side of the electrical cavity 252, for receiving and mounting air impellers 258, 259 for delivery through one or more Tubes (not shown) provide circulating air to the interior of the helmet.

Air filters 262, 264 may be provided in the liquid passages of the impellers to filter the air before it enters the helmet.

The module further includes cavities for a power source, including one or more battery cavities 267 . The electrical cavity 252 includes a cover 269 which seals the cavity, and a cover 271 which may be conveniently releasably attached to the back of the module is provided for sealing the various module components including the power supply, impeller and electrical components. In other embodiments, any one or more of the above components may be omitted from the control module. Circuitry may be arranged to control or monitor any of the functions described above.

light source

Embodiments of the head protector include a light source secured to the front of the helmet or visor. The light source may be based on a light source, preferably a high efficiency LED. The light source may include reflectors and lenses to focus the light into a beam of desired shape and width. The light source may comprise two laterally spaced individual light sources. Each light source produces a beam of light that can be pointed at any desired angle relative to each other, converging or diverging as required. Each light source includes a light emitting diode and may further include reflectors and/or lenses to generate the desired light beam. The light source may be powered by a DC power source such as a battery pack mounted on the helmet or elsewhere.

Any modifications and changes to the above-described embodiments will be apparent to those skilled in the art.

Claims (23)

1. head protecting system comprises:

Helmet shell;

Be positioned at the erecting device on the said helmet shell, said erecting device with face shield be installed to pivotally make on the said helmet shell face shield can raise and lowered position between move;

Releasably face shield is remained on the holding device on the said erecting device; With

Face shield; It is arranged to be installed on the said erecting device; Said face shield comprises first transparent material layer and fixes or be bonded to a plurality of bullet resistant material layers of said first transparent material layer that said a plurality of bullet resistant material layers define and allow the open area of light through said face shield.

2. head protecting system according to claim 1 comprises:

Cover second transparent material layer in said transparent apertures zone, said second transparent material layer is adjacent with first transparent material layer and be positioned at the front of first transparent material layer, and it is regional to extend through said transparent apertures.

3. head protecting system according to claim 2, wherein:

Said second transparent material layer extends on the transparent apertures zone of said relatively face shield.

4. head protecting system according to claim 3, wherein:

Said transparent apertures zone is limited peripheral boundary and the peripheral edge of said second transparent material layer is positioned to the regional peripheral boundary of contiguous said transparent apertures.

5. according to claim 2 or 3 or 4 described head protecting systems, wherein:

Said face shield has the front and back, and said second transparent material layer is positioned to towards the front of said face shield and said first transparent material layer is positioned at the back of said second transparent material layer.

6. according to the described head protecting system of arbitrary claim among the claim 2-4, wherein:

Said second transparent material layer comprises one of acrylic resin and glass.

7. according to the described head protecting system of arbitrary claim among the claim 1-4, wherein:

Said face shield has the front and back, and said first transparent material layer is positioned to the back that front and said a plurality of bullet resistant material layer towards said face shield are positioned at said first transparent material layer.

8. according to the described head protecting system of arbitrary claim among the claim 1-4, wherein: said bullet resistant material comprises

9. according to the described head protecting system of arbitrary claim among the claim 1-4, wherein:

Said face shield comprises forward part and left part and the right portions that is formed by said transparent material layer, and said a plurality of bullet resistant material layer extends on the part at least of said side sections.

10. according to the described head protecting system of arbitrary claim among the claim 1-4, wherein:

Said first transparent material layer comprises the lower part that is formed and be positioned at the below in said transparent apertures zone by said first transparent material layer, and said a plurality of bullet resistant material layer extends on the said lower part.

11. according to the described head protecting system of arbitrary claim among the claim 1-4, wherein:

Said first transparent material layer comprises Merlon or acrylic resin.

12. head protecting system according to claim 11, wherein:

Said first transparent material layer comprises Merlon.

13. according to the described head protecting system of arbitrary claim among the claim 1-4, wherein:

Comprise said first transparent material layer and when the part of the said face shield of a plurality of bullet resistant material layers that extend on said first transparent material layer is adopting testing standard MIL-STD-662F and using the 0.22mm projectile that defines among the MIL-P-46593A to test, have the V-50 or the above impact grade of 600 meter per seconds.

14. according to the described head protecting system of arbitrary claim among the claim 1-4, wherein:

Said a plurality of bullet resistant material layer is normally opaque.

15. according to the described head protecting system of arbitrary claim among the claim 1-4, wherein:

Said a plurality of bullet resistant material layer is bonded together to form laminate.

16., further comprise according to the described head protecting system of arbitrary claim among the claim 1-4:

Releasably face shield is remained on the holding device on the said erecting device.

17. according to the described head protecting system of arbitrary claim among the claim 1-4, wherein:

When the user put on the said helmet and said face shield and is in the position of loweing, the shape of said face shield was suitable for holding the respirator that is contained on the face.

18., further comprise according to the described head protecting system of arbitrary claim among the claim 1-4:

Releasably with said face shield be locked in raise with lowered position in locking device on one of at least; Said locking device comprises being installed in and is used to lock pressure-locking part and being connected to the pressing piece that the hand on the said locking piece can contact of said face shield on the helmet shell.

19. head protecting system according to claim 18 further comprises:

Be positioned at the front of said locking piece and the block piece that stretches out from said helmet shell; Said block piece is used to engage the part of said face shield and is configured to prevent that the backward motion of said face shield with respect to said shell, wherein said block piece are configured to also prevent that the anterior power of said face shield is passed to displaceable member.

20. head protecting system according to claim 19, wherein:

Said block piece part at least is flexible to absorb mechanical shock.

21. head protecting system according to claim 19, wherein:

Said block piece is positioned at the front of said displaceable member.

22. according to the described head protecting system of arbitrary claim among the claim 1-4, wherein:

Said helmet shell is the opening helmet shell of face.

23. according to the described head protecting system of arbitrary claim among the claim 1-4, wherein:

Said helmet shell comprises a plurality of bullet resistant material layers, and said bullet resistant material layer comprises

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