CN203978018U - Screw-in lock cylinder construction with bead and screw-in key - Google Patents

Abstract

A spiral lock core structure with lock balls and a spiral key are disclosed, wherein the spiral lock core structure comprises a hollow lock shell, a lock core body and a plurality of clamping groups. The lock housing includes a plurality of perforations. The lock core body is rotatably accommodated in the lock shell and comprises three spiral lock channels and a plurality of limiting holes, and each limiting hole is respectively communicated with the corresponding through hole. Each clamping set comprises a locking bead which can be displaceably accommodated in the limiting hole, a clamping block which can be displaceably accommodated in the same limiting hole, and an elastic piece which constantly pushes the clamping block against the locking bead, and each elastic piece keeps the contacted locking bead extending into the corresponding lock channel when the external force is not applied or disappears. The spiral key comprises a key handle and a spiral key body connected with the key handle. By means of the design of the spiral key and the spiral lock core structure, the safety can be improved.

Description

Screw-in lock cylinder construction with bead and screw-in key

technical field

The utility model relates to a spiral lock core structure with lock beads and a spiral key, in particular to a spiral lock core structure with lock beads and a spiral key for a safer anti-theft lockset.

Background technique

The anti-theft locks currently on the market are more common with mechanical pin tumbler locks and wafer tumbler locks, such as the bead lock disclosed in US Patent No. US5964111 A, and the announcement of US Patent No. US6978647 B2 film lock. Most of the lock core structures of the existing pin locks are for a key to be inserted into the lockway in a straight groove and correspond to the lock core body of the radial assembly pin (or lock ball). If a straight rod-shaped unlocking tool is used to insert the lock core Through the lock channel of the body, you can touch the marbles and easily achieve the purpose of unlocking. Similarly, the lock core structure of the existing chip lock is also a lock core body in a straight groove for a key to be inserted into, and a straight rod-shaped or strip-shaped unlocking tool can be inserted into the lock core body's lock way , and easily achieve the purpose of unlocking. Therefore, the anti-theft performance of the lock core body of the straight groove lock way is poor and the safety is low.

Contents of the invention

The purpose of the utility model is to provide a spiral lock core structure with lock beads which improves safety.

Therefore, the purpose of the present utility model is to provide a spiral lock cylinder structure with a lock bead to improve safety.

Therefore, the utility model has a spiral lock core structure of a lock bead, including: a lock case, a lock core body and a plurality of clamping groups.

The lock case includes an inner space and a plurality of through holes communicating with the inner space. The lock core body is accommodated in the inner space of the lock case and can rotate relative to the lock case. The lock core body includes three helical lockways that are spaced from each other and communicate with the outside world, and a plurality of Spaced spacing holes, each spacing hole is connected to the corresponding through hole, and each spacing hole is connected to one of the lockways. Each clamping group includes a lock bead displaceably accommodated in the limit hole of the lock core body, a clamping block displaceably accommodated in the same limit hole of the lock core body, and a constant The clamping block pushes against the lock ball and is accommodated in the corresponding perforated elastic member of the lock housing, and each elastic member keeps the pressed lock ball extending into the lock bead when no external force is applied or the external force disappears. Corresponding to the lock channel of the lock core body.

Preferably, each limiting hole of the lock core body has a large aperture portion, a small aperture portion connected to the large aperture portion and having a diameter smaller than the diameter of the large aperture portion, and a hole between the large aperture portion and the large aperture portion. The positioning ring between the small aperture parts, each of the locking beads has a protruding part, and a shaft part connected to the protruding part and having a diameter smaller than the diameter of the protruding part, and the protruding part can touch and be positioned on the protruding part Locating ring.

Preferably, the lock housing further includes a large diameter portion, and a small diameter portion connected to the large diameter portion and having an outer diameter smaller than that of the large diameter portion, and the through hole is formed in the small diameter portion. The pipe diameter portion, the spiral lock core structure also includes a shell covering the outer surface of the small diameter portion of the lock housing, and the other end of each elastic member is against the inner surface of the shell.

Preferably, wherein, the lock housing further includes an inner ring surface defining the inner space, the lock core body is cylindrical and has an insertion end for a key to be inserted into, the inner ring surface of the lock housing is in contact with the lock The insertion ends of the core jointly define an insertion groove.

Another purpose of the present utility model is to provide a screw-type key with improved safety.

Therefore, the utility model spiral lock key includes: a handle and a body. The handle of the spoon is for holding and applying force. The spoon body is connected with the spoon handle, and the spoon body includes three spoon blades spaced apart from each other and extending in a long spiral shape. At least one spoon blade has at least one concave hole recessed from the inner surface.

Preferably, at least one spoon leaf has a plurality of concave holes spaced apart from each other and recessed from the inner surface.

Preferably, some of the concave holes have unequal concave depths.

Preferably, the spoon body further includes a spoon block respectively connecting the spoon blade and the spoon handle.

Preferably, wherein, the spoon blade and the spoon block are integrally formed.

The beneficial effect of the utility model is that: by means of the spiral lockway of the lock core body and the corresponding spiral key blade of the spiral key, and through the uniquely designed lock bead and the clamping group, In order to increase the difficulty of stealing and improve the safety of the lock.

Description of drawings

Fig. 1 is a three-dimensional exploded schematic diagram illustrating a preferred embodiment of the utility model with a screw-type lock cylinder structure with lock beads and a screw-type key;

Fig. 2 is a schematic diagram illustrating the relative positions of the lock housing and the lock cylinder after the embodiment is assembled;

Fig. 3 is a schematic diagram illustrating the relative positions of the components in the locked state;

Fig. 4 is an enlarged schematic view of a section, illustrating that a protrusion of a lock bead touches a positioning ring located in a limiting hole of the lock core;

Fig. 5 is a schematic cross-sectional view illustrating the state of a portion of a spoon leaf which is straightly expanded; and

FIG. 6 is a schematic diagram illustrating relative positions of various components in an unlocked state.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is described in detail.

Referring to Fig. 1 , the utility model has a spiral lock core structure of a lock bead and a preferred embodiment of a screw key. The spiral lock core structure includes a hollow shell 1, a lock shell 2, and a lock core body 3 , and multiple card groups4. It should be noted that, in this embodiment, the number of the clamping groups 4 is four, and they are located in different positions, but it is not limited thereto, and can be increased or decreased according to actual needs.

Referring to FIG. 2 and shown in FIG. 1 , the lock housing 2 includes a large diameter portion 21 , a small diameter portion 22 connected to the large diameter portion 21 and having an outer diameter smaller than that of the large diameter portion 21 , An inner annular surface 24 defining an inner space 23, and a plurality of perforations 25 formed in the small diameter portion 22 and communicating with the inner space 23, the inner annular surface 24 is composed of the inner surface of the large diameter portion 21 and the The inner surface of the small diameter portion 22 is jointly formed, and the housing 1 covers the small diameter portion 22 of the lock housing 2 . In this embodiment, the number of the through holes 25 is equal to the number of the clamping groups 4 .

The lock core body 3 is accommodated in the inner space 23 of the lock case 2 and can rotate relative to the lock case 2. The lock core body 3 is a solid cylinder and includes three spaced apart from each other and communicated with the outside world. And it is spirally recessed in the lockway 31 on the surface of the lock core body 3, a plurality of spacing holes 32 spaced apart from each other, an insertion end 33 for a lock key 70 to be inserted, and an insertion end 33 opposite to the insertion end 33. The linkage head 34. The insertion end 33 of the lock core body 3 and the inner ring surface 24 of the lock housing 2 jointly define an insertion slot 5 as shown in FIG. 2 . The linkage head 34 protrudes from the small diameter portion 22 of the lock housing 2, and can be linked with a locking member (not shown) to operate to control and complete the unlocking or locking action.

Referring to FIG. 1 , FIG. 3 and FIG. 4 , in detail, each limiting hole 32 communicates with the corresponding through hole 25 of the lock housing 2 , and each limiting hole 32 communicates with one of the lockways 31 respectively. In this embodiment, the number of the limiting holes 32 is equal to the number of the clamping groups 4 . Each limiting hole 32 of the lock core body 3 has a large aperture portion 321, a small aperture portion 322 connected to the large aperture portion 321 and having a diameter smaller than the diameter of the large aperture portion 321, and a small aperture portion 322 located at the large aperture portion 321. The positioning ring 323 between the small aperture portion 322 .

Each locking group 4 includes a locking bead 41 displaceably accommodated in the limiting hole 32 of the lock core body 3 , and a locking bead 41 displaceably accommodated in the same limiting hole 32 of the lock core body 3 . block 42 , and an elastic member 43 that constantly pushes the clamping block 42 against the lock bead 41 and is accommodated in the through hole 25 of the lock case 2 . For the sake of easy understanding, only the lock bead 41, the clamping block 42 and the elastic member 43 of the clamping group 4, and the corresponding perforation 25 of the lock case 2 and the limiting hole 32 of the lock core body 3 will be used below. to illustrate.

The locking ball 41 has a protruding portion 411 , and a shaft portion 412 connected to the protruding portion 411 and having a diameter smaller than that of the protruding portion 411 . One end of the elastic member 43 abuts against the clamping block 42, and the other end abuts against the inner surface of the housing 1, and when the elastic member 43 is not subjected to external force or the external force disappears, the clamping block 42 is simultaneously located in the lock housing 2 of the perforation 25 and the limit hole 32 of the lock core body 3, the effect of the lock core body 3 is controlled by daka, so that the lock core body 3 can not rotate relative to the lock housing 2 to achieve the locking effect . When in the locked state, the protruding portion 411 of the locking bead 41 touches and is positioned on the corresponding positioning ring 323, and at the same time makes the front end of the shaft portion 412 of the locking bead 41 extend as shown in FIG. into the corresponding lock channel 31 of the lock core body 3 . In this embodiment, the elastic member 43 is a compression spring.

Referring back to FIG. 1 , the twisted key 70 includes a handle 6 for the user to hold and apply force, and a key body 7 connected to the handle 6 .

The spoon body 7 includes three spoon blades 71 spaced apart from each other and extending spirally, and a spoon block 72 respectively connecting the spoon handle 6 and the spoon blades 71 . Each spoon blade 71 has at least one concave hole 711 recessed from the inner surface. In this embodiment, the number of the concave holes 711 is the same as the number of the clamping groups 4, and one of the three spoon blades 71 has two concave holes spaced apart from each other and recessed from the inner surface. Holes 711, 711', for clear description, the spoon blade 71 is straightly developed and partially sectioned as shown in Fig. 5, the recessed depth of the concave hole 711 and the other concave hole 711' on the spoon blade 71 is Not equally. The other two spoon blades 71 of the three spoon blades 71 respectively have a concave hole 711 depressed from the inner surface.

Here, it is particularly explained that the locking group 4 configured in this embodiment can adjust the radial movement distance by changing the length of the locking block 42 or the locking ball 41 of the locking group 4 . In this embodiment, it is chosen to change the length of the clamping blocks 42, 42' of the clamping group 4, and at the same time change the opening depth of the corresponding large aperture portion 321 of the lock core body 3, and the corresponding key. The recessed depth of the recessed holes 711 , 711 ′ of the leaf 71 . Specifically, the length of the clamping block 42' is longer than that of the clamping block 42, and the opening depth of the corresponding large aperture portion 321 is deeper, and the corresponding depression depth of the concave hole 711 is shallower. If the clamping block 42' is shorter, the opening depth of the large aperture portion 321 corresponding to it is shallower, and similarly, the corresponding recessed hole 711' is deeper. Therefore, according to the different lengths of the clamping blocks 42, 42' of the clamping group 4, it is necessary to adjust the opening depth of the corresponding large aperture portion 321 of the lock cylinder body 3 and the corresponding concave hole of the key blade 71. The depression depths of 711 and 711 ′, in other words, the depression depths of the concave holes 711 and 711 ′ on the spoon blade 71 may be all the same or partially unequal.

It should be noted that the number of lockways 31 of the lock core body 3 is at least three, but not limited to three, and the number of key blades 71 of the spoon body 7 is the same as the number of lockways 31 .

Next, the method of using and actuating the preferred embodiment of the utility model with the screw-type lock cylinder structure of the lock ball and the screw-type key will be described.

When each lock ball 41 is in the locked position relative to the lock housing 2 as shown in Figures 3 and 4, each locking block 42 will not press the corresponding elastic member 43 upwards, and each locking The blocking block 42 is located in the corresponding through hole 25 of the lock case 2 and the limiting hole 32 of the lock core body 3 at the same time, and clamps the lock core body 3 so that the lock core body 3 cannot rotate relative to the lock case 2 . The protruding portion 411 of each locking bead 41 abuts against the corresponding positioning ring 323 , and the front end of the shaft portion 412 of each locking bead 41 protrudes from the corresponding locking channel 31 .

Cooperate with reference to Fig. 1 and Fig. 2, when carrying out unlocking action, the key body 7 of this screw type lock key 70 as shown in Fig. Confinement, so that all the key blades 71 of the key body 7 can be limited to rotate in the insertion groove 5, causing the key blades 71 to be easily inserted into the corresponding lockways 31 of the lock core body 3, resulting in the The key blade 71 can be inserted into the lockway 31 quickly and correctly. Then, the key blade 71 continues to extend into the lockway 31, and at the same time, the locking beads 41 of the clamping group 4 can slide relatively on the inner surface of the key blade 71 of the spoon body 7, and due to the key The concave holes 711 and 711' of the body 7 have different concave depths (see FIG. 5 ), which can respectively push the locking beads 41 to displace in the radial direction. When the key blades 71 respectively extend into the lockway 31 and reach the unlocking position as shown in FIG. position, causing each key blade 71 to push against the corresponding lock bead 41 at the same time, so that the protrusion 411 of each lock bead 41 is separated from the corresponding positioning ring 323, and each lock bead 41 moves closer to the lock cylinder The direction of the outer peripheral surface of the body 3 is radially displaced synchronously, so that each clamping block 42, 42' is completely separated from the corresponding limiting hole 32 of the lock core body 3, and retracted into the corresponding through hole of the lock housing 2 25 and compress the corresponding elastic member 43, so that the corresponding elastic member 43 accumulates an elastic restoring force, causing the lock core body 3 to be rotated without any hindrance, and then the linkage of the lock core body 3 The head 34 rotates synchronously to move the locking member to achieve the purpose of unlocking.

When locking, the key 70 is rotated again to drive the lock core body 3 back to the unlocked position as shown in Figure 6, and then the key 70 is pulled out, and each key blade 71 of the key body 7 will not be locked. Then press the corresponding locking ball 41 of the clamping group 4, and the elastic restoring force will make each elastic member 43 push against the corresponding clamping block 42, 42' and extend into the limiting hole 32 of the lock core body 3 , and lock the lock core body 3 from rotating, and make the lock beads 41 respectively return to the locked positions.

It is worth mentioning that the key blade 71 of the screw-type lock key is designed to have a change in cross-sectional area and a change in thickness. There are also parameters that can adjust the rotation angle of the key blade 71, the cutting inclination angle, the pitch, and the direction of rotation (such as clockwise rotation or counterclockwise rotation), and in conjunction with the change of the parameters, the spiral lock must be The described lock way 31 of this lock core body 3 of core structure is designed accordingly, just can produce multiple flexible changes, and can increase complexity.

In this way, if a thief intends to use a straight-rod-shaped unlocking tool to steal the screw-type lock cylinder structure, because the lockway 31 of the spiral-type lock core structure is in a spiral state, it is difficult for the straight-rod-shaped unlocking tool to be opened. Moving in the lockway 31 makes it impossible to effectively explore or push the locking bead 41 of the clamping group 4 to move radially, and there are multiple lockways 31 (three are shown in this embodiment), to achieve In the unlocked state, all the lock beads 41 must reach the set position simultaneously. If multiple unlocking tools equal to the number of lockways 31 are not used, it is impossible to move all the lock beads 41 synchronously, which also increases the theft of the spiral lock cylinder structure. The difficulty of opening can really improve the anti-theft effect of the spiral lock cylinder structure.

To sum up, the utility model has a spiral lock cylinder structure of a lock bead and a spiral key. By means of the spiral lock channel 21 of the lock core body 2, the corresponding spiral lock key has a spiral shape. The key blade 71, and through the uniquely designed lock bead 41 and the clamping group 4, to improve the difficulty of stealing and enhance the safety of the lock, so the purpose of this utility model can indeed be achieved.

Claims (9)

1. A spiral lock core structure with lock beads; it is characterized in that: the spiral lock core structure with lock beads comprises: A lock case, including an inner space, and a plurality of through holes communicating with the inner space; A lock core body, accommodated in the inner space of the lock case and rotatable relative to the lock case, the lock core body includes three helical lockways that are spaced from each other and communicate with the outside world, and a plurality of The spacing holes are spaced apart, and each spacing hole is connected to the corresponding through hole of the lock housing, and each spacing hole is connected to one of the lockways; and A plurality of clamping groups, each clamping group includes a lock bead displaceably accommodated in the limiting hole of the lock core body, a clamping bead displaceably accommodated in the same limiting hole of the lock core body block, and an elastic piece that constantly pushes the clamping piece against the lock bead and is accommodated in the perforated hole of the corresponding lock case, and when each elastic piece is not subjected to external force or the external force disappears, the pressed The lock beads keep extending into the corresponding lock channel of the lock core body. 2. The spiral lock cylinder structure with lock beads according to claim 1, characterized in that: each limiting hole of the lock cylinder body has a large aperture portion, a large aperture portion connected to the large aperture portion and a diameter smaller than the large aperture portion. The small aperture portion of the diameter of the aperture portion, and a positioning ring located between the large aperture portion and the small aperture portion, each of the locking beads has a protruding portion, and a ring connected to the protruding portion and having a diameter smaller than the protruding portion The diameter of the shaft portion, the protruding portion can be touched and positioned on the positioning ring. 3. The spiral lock cylinder structure with lock beads according to claim 2, characterized in that: the lock housing also includes a large diameter portion, and a large diameter portion connected to the large diameter portion and has an outer diameter smaller than the large diameter The small diameter part of the outer diameter of the part, the perforation is formed in the small diameter part, and the screw type lock cylinder structure also includes a shell covering the outer surface of the small diameter part of the lock housing, each of the elastic The other end of the piece is against the inner surface of the shell. 4. The spiral lock cylinder structure with lock beads according to any one of claims 1 to 3, characterized in that: the lock housing further includes an inner ring surface defining the inner space, and the lock cylinder body is in the shape of It is cylindrical and has an insertion end for a lock key to be inserted into. The inner ring surface of the lock case and the insertion end of the lock core jointly define an insertion slot. 5. A spiral key; it is characterized in that the spiral key comprises: a spoon handle for holding and applying force; and A spoon body is connected with the handle of the spoon. The spoon body includes three spoon blades spaced apart from each other and extending in a long spiral shape. At least one spoon blade has at least one concave hole recessed from the inner surface. 6. The screw-type lock key according to claim 5, wherein at least one of the blades has a plurality of recessed holes spaced apart from each other and recessed from the inner surface. 7. The screw-type lock key according to claim 6, characterized in that: some of the concave holes have unequal concave depths. 8. The screw-type lock key according to claim 7, wherein the key body further comprises a key block respectively connecting the key blade and the key handle. 9. The screw-type lock key according to claim 8, wherein the key blade and the key block are integrally formed.