CN203935323U - The welding mask of point contact type automatic open-close sunshade lens - Google Patents

Abstract

This utility model relates to a kind of welders' mask of point contact type automatic open-close sunshade lens, effectively solved the technical problem in above background technology, it not only can utilize electromagnetism adhesive principle to carry out automatically folding, aspect technical staff controls filter, and the structure of point contact type has been saved electric energy, scheme is, comprise the cover body with observation window, observation window inside edge is provided with chute, shading mirror two ends slide up and down and are embedded in chute through picture frame, there is the first electric magnet being arranged on observation window shading mirror top, shading mirror upper end is fixed with permanent magnet, between the first electric magnet and permanent magnet, be connected with the first spring, chute inwall between shading mirror and the first electric magnet is provided with groove, in groove, be provided with the Magnetic lock that front end face is circular arc or oblique line transition, Magnetic lock partly stretches out groove, Magnetic lock rear the second spring is connected with the second electric magnet, on picture frame, there is the blind hole corresponding with Magnetic lock, cover body and human body chin corresponding section are provided with point-touch switch.

Description

Welding visor with touch-type automatic opening and closing of light-shielding lenses

technical field

The utility model relates to a welding mask, in particular to a welding mask which mainly uses point-contact automatic opening and closing light-shielding lenses during welding at high altitudes such as communication iron towers.

Background technique

The currently used welding masks can be divided into two types: hand-held and head-mounted. When welders perform high-altitude welding (such as welding on communication iron bars), they often choose to use the head-mounted type. In order to enable the welder to fully To control the opening and closing of the shading mirror, there are existing welder masks for automatic and manual operation of the opening and closing of the shading mirror. A welder's mask uses the bite force of the mouth to open and close the shading mirror through a traditional device. When using this welder's mask, the welder does not need to Stop twisting the mouth to mechanically drive the shading mirror to open and close, and the shading mirror can only be kept in one state (open or close) when the mouth is twisted all the time, which is laborious. In recent years, there have been a variety of electromagnetic For example, the Chinese utility model patent (Patent No. 201320446904) discloses a hands-free welding mask, which includes a mask body with a mounting window, a transparent lens located on the mounting window, and a The installation window, the filter holder containing the filter installation groove, the front and rear of the filter holder are equipped with mirror windows, the filter installation groove is inserted with a filter, and the upper end of the filter is installed with a permanent magnet. The filter holder is also provided with a light-sensitive electromagnetic system that can control the permanent magnet to move up and down, and the main body of the mask is provided with a number of air holes whose opening direction is obliquely downward from the outer surface to the inner surface; on the one hand, this patent utilizes When the light-sensing electromagnetic system detects the welding light, it uses the electromagnet to attract the permanent magnet to control the rise and fall of the filter. This kind of electromagnet will lose power only when there is strong light, and it cannot be artificially controlled. It is more flexible. Poor, and when the electromagnet is in the energized state, it will lose power unless there is strong light, which wastes a lot of electric energy and is not practical.

Utility model content

In view of the above situation, in order to overcome the defects of the prior art, the purpose of this utility model is to provide a welder's mask with a touch-type automatic opening and closing of the shading lens, which effectively solves the technical problems in the above background technology. The suction principle automatically opens and closes, and the technical staff controls the filter, and the point-contact structure saves power.

The solution is to include a cover body with an observation window, a chute is provided on the inner edge of the observation window, the two ends of the shading mirror slide up and down through the frame and are embedded in the chute, and the first electromagnetic device installed on the observation window is arranged above the shading mirror. Iron, the upper end of the shading mirror is fixed with a permanent magnet, the first spring is connected between the first electromagnet and the permanent magnet, the inner wall of the chute between the shading mirror and the first electromagnet is provided with a groove, and the front end surface is arranged in the groove The magnetic lock head is a circular arc or oblique line transition. The magnetic lock head part protrudes from the groove. The second electromagnet is connected to the rear of the magnetic lock head through the second spring. There is a blind hole corresponding to the magnetic lock head on the frame. The cover body is provided with a point-touch switch corresponding to the chin of the human body. The point-touch switch includes a switch shell and a switch button partially placed above the switch shell. The lower end of the switch button is fixed in the switch shell by a third spring. The switch button The middle part of the lower end is fixed with a connecting rod, the lower end of the connecting rod is fixed with a connecting shaft, and the lower end of the connecting rod is fixed with a drive shaft through the first one-way bearing. It is a helical surface, and a transmission sleeve is set on the helical surface. The inner wall of the transmission sleeve is a threaded notch that matches the helical surface. The second one-way bearing is set on the outside of the transmission sleeve. On the contrary, the outer cover of the second one-way bearing is equipped with a fixed disk, and the upper surface of the fixed disk has insulating wires that divide it into four parts. The fixed disks between the insulated wires are respectively provided with conductive layers, and the conductive layers are connected by wires. The terminal post outside the touch switch, the drive shaft above the transmission sleeve is pierced with a conductive plate, and the upper surface of the conductive plate is in contact with a limit baffle in the switch housing. The first electromagnet and the second electromagnet The electromagnets are respectively connected to the power supply through the connecting posts of the conductive layers at opposite angles to each other.

The utility model only conducts electricity instantaneously when the shading mirror is in action, and does not conduct electricity when the shading mirror is at the upper or lower end, which greatly saves electric energy, and can arbitrarily move up and down the shading plate according to people's needs, with a high degree of freedom , using electromagnetic force as the driving force for the action of the shading mirror, which reduces the labor level of workers.

Description of drawings

Fig. 1 is a partial cross-sectional structure diagram of the side of the utility model.

Fig. 2 is a structural schematic diagram of the observation window part of the utility model.

Fig. 3 is a structural schematic diagram of a point-contact switch of the present invention.

Fig. 4 is a schematic diagram of the connection between the conductive layer and the terminal of the present invention.

Fig. 5 is a schematic diagram of the connection between the conductive plate and the drive shaft of the present invention.

Fig. 6 is a schematic diagram of the connection of the conductive layer, the conductive plate, the first electromagnet, the second electromagnet and the power supply of the present invention.

Detailed ways

The specific embodiments of the present utility model will be described in further detail below in conjunction with the accompanying drawings.

As shown in Fig. 1 to Fig. 6, the utility model includes a cover body 1 with an observation window 2, the inner edge of the observation window 2 is provided with a chute 3, and the two ends of the shading mirror 4 slide up and down through the frame 5 and are embedded in the chute 3 , there is the first electromagnet 6 that is arranged on the observation window 2 above the light-shielding mirror 4, the permanent magnet 7 is fixed on the upper end of the light-shielding mirror 4, the first spring 8 is connected between the first electromagnet 6 and the permanent magnet 7, the light-shielding mirror 4 The inner wall of the chute 3 between the first electromagnet 6 is provided with a groove 9, and the groove 9 is provided with a magnetic lock head 10 whose front end surface is a circular arc or oblique line transition, and the magnetic lock head 10 partially extends out of the groove 9 The rear of the magnetic lock head 10 is connected with a second electromagnet 12 via a second spring 11, and a blind hole 13 corresponding to the magnetic lock head 10 is arranged on the mirror frame 5. Switch 14, point-touch switch 14 includes a switch housing 15 and a switch button 16 partially placed above the switch housing 15, the lower end of the switch button 16 is fixed in the switch housing 15 through a third spring 17, the middle part of the lower end of the switch button 16 A connecting rod 18 is fixed, the lower end of the connecting rod 18 is fixed with a connecting shaft 19, the lower end of the connecting shaft 19 is fixed with a drive shaft 21 through the first one-way bearing 20, and the switch housing 15 at the lower end of the driving shaft 21 is provided with a cavity 22 , the outer edge of the lower part of the drive shaft 21 is a helical surface 21a, the helical surface 21a is covered with a transmission sleeve 23, the inner side wall of the transmission sleeve 23 is a threaded notch 24 matched with the helical surface 21a, and the transmission sleeve 23 is covered with a second unit. To the bearing 25, the first one-way bearing 20 and the second one-way bearing 25 turn in the opposite direction, and the second one-way bearing 25 is covered with a fixed disk 26, and the upper surface of the fixed disk 26 has an insulated wire that divides it into four parts. 27. Conductive layers 28 are respectively provided on the fixed discs 26 between the insulated wires 27, and the conductive layers 28 are connected to the terminal posts 29 placed outside the touch switch 14 through wires, and the drive shaft 21 above the transmission sleeve 23 is worn on the A conductive plate 30 is provided, and the upper end surface of the conductive plate 30 is in contact with a limit baffle 31 arranged in the switch housing 15. The first electromagnet 6 and the second electromagnet 12 pass through the mutually diagonal conductive layers 28 respectively. The terminal 29 is connected to the power supply.

The lower end of the touch switch 14 is fixed on the cover body 1 via a bolt 32, and the other end of the bolt 32 is placed outside the cover body 1. During use, the height of the touch switch 14 can be fine-tuned through the bolt 32. The lower end of the touch switch 14 can be rotated and fixed on the bolt 32. When fine-tuning, the touch switch 14 can be fixed by hand, and its height can be fine-tuned through the bolt 32.

The front end of the light-shielding mirror 4 is provided with a see-through glass 33, and the see-through glass 33 can block the sparks during welding and play a certain protective role for the light-shielding mirror 4.

The shaft coupling 19 is a cylinder, the upper end of the cylinder is provided with a shaft hole, and the lower end of the cylinder is provided with a bearing hole.

The transmission sleeve 23 is a cylinder with upper and lower through holes inside, and a threaded notch 24 matched with the helical surface 21a is provided in the through hole. When the bolt surface 21a moves up and down in the threaded notch 24, the threaded notch can be driven. Notch 24 rotates clockwise or counterclockwise.

The upper surface of the conductive layer 28 is a rough surface, and the lower side of the two ends of the conductive plate 30 is provided with a conductive block 34 of the same material, and the lower surface of the conductive block 34 is a rough surface. When the conductive block 34 is in contact with the conductive layer 28 It can play a good role in positioning.

The observation window 2 at the upper end of the magnetic lock head 10 is provided with a limiting plate, which can limit the rising height of the shading mirror 4 .

The distance from the limit baffle 31 to the conductive layer 28 of the conductive plate 30 is one stroke of the touch switch 14. When the switch travels down a stroke, the conductive plate is driven by the cooperation of the helical surface 21a and the thread notch 24. 30 turn ninety degrees.

There are a plurality of upwardly inclined ventilation holes on the cover body 1 on both sides of the observation window 2, which can not only allow good ventilation, but also prevent sparks from being sprayed on people's faces during welding.

When the utility model is in use, the welder wears the mask on the head, and the power supply is not connected at this time, the light-shielding mirror 4 is in the state of blocking human eyes, and the first spring 8, the second spring 10 and the third spring 17 are in a compressed state. When the worker needs to raise the light-shielding mirror 4 to observe the weld seam, he opens his chin to touch the switch button 16. At this time, the switch button 16 drives the connecting rod 18 to move downward, and the connecting rod 18 drives the drive shaft 21 to move downward through the connecting shaft part 19. At this time, the first one-way bearing 20 is in a rotatable state, and the second one-way bearing 25 is in a locked state. The internal thread notch 24 of the drive sleeve 23 cooperates with the helical surface 21a to make the helical surface 21a rotate, which drives the conductive plate 30 to rotate and conduct electricity. When the plate 30 touches the conductive layer 28, it rotates exactly 90 degrees (this point can be obtained according to the routine test according to the specific situation). At this time, the first electromagnet 6 is energized, and the first electromagnet 6 absorbs the permanent magnet 7 to drive the shading mirror 4 to move upwards, shading The upper end of the mirror 4 squeezes it into the groove 9 through the arc or oblique line transition of the magnetic lock head 10. When the blind hole 13 of the mirror frame 5 moves to the magnetic lock head 10, the magnetic lock head 10 passes through the second spring 11. Eject, at this time the light-shielding mirror 4 reaches the highest position, the light-shielding mirror 4 is stuck by the magnetic lock head 10, and will not fall. After the switch button 16 is released, the first one-way bearing 20 is in a locked state at this moment, and the second single-way bearing 20 is in a locked state. Bearing 25 is in a rotatable state, and in the process of upward movement of switch button 16, helical surface 21a does not rotate, and transmission sleeve 23 rotates, thereby ensuring that conductive plate 30 is in the position when it is in contact with conductive layer 28. Due to the short stroke and the second An electromagnet 6 absorbs the permanent magnet 7 faster, and the permanent magnet 7 drives the light-shielding mirror 4 to reach the stuck position very soon, so the worker only needs to press the switch button 16 at a time when there is a slight pause to reach the position. Need effect, when needing to lower the light-shielding mirror 4, the worker presses the switch button 16 downwards with the chin, and now the conductive plate 30 rotates ninety degrees again, and the two ends contact the other two conductive layers, and now the second electromagnet 12 conduction, the first electromagnet 6 is not conducting, the second electromagnet 12 absorbs the magnetic lock head 10 and moves to the inside of the groove 9, and the light-shielding mirror 4 falls to the initial position under the action of the first spring 8 to block human eyes. The utility model point-touch switch 14 can realize the alternate conduction of two currents, and also realizes that the first electromagnet 6 and the second electromagnet 12 are electrified alternately. The lower end is non-conductive, which greatly saves electric energy.

The utility model only conducts electricity instantaneously when the shading mirror is in action, and does not conduct electricity when the shading mirror is at the upper or lower end, which greatly saves electric energy, and can arbitrarily move up and down the shading plate according to people's needs, with a high degree of freedom , using electromagnetic force as the driving force for the action of the shading mirror, which reduces the labor level of workers.

Claims (8)

1. A point-touch welding mask for automatically opening and closing shading lenses, including a cover body (1) with an observation window (2), a chute (3) on the inner edge of the observation window (2), and a shading mirror (4 ) both ends slide up and down through the mirror frame (5) and are inlaid in the chute (3), the first electromagnet (6) arranged on the observation window (2) is arranged on the top of the shade mirror (4), and the upper end of the shade mirror (4) is fixed There is a permanent magnet (7), and a first spring (8) is connected between the first electromagnet (6) and the permanent magnet (7). The inner wall of the chute (3) is provided with a groove (9), and the groove (9) is provided with a magnetic lock head (10) with a circular arc or oblique line transition on the front end surface, and the magnetic lock head (10) is partially protruded from the concave Slot (9), the second electromagnet (12) is connected to the rear of the magnetic lock head (10) via the second spring (11), and there is a blind hole (13) corresponding to the magnetic lock head (10) on the mirror frame (5) , the cover body (1) is provided with a touch switch (14) corresponding to the chin of the human body, the touch switch (14) includes a switch housing (15) and a switch partially placed above the switch housing (15) Button (16), the lower end of the switch button (16) is fixed in the switch housing (15) through the third spring (17), the middle part of the lower end of the switch button (16) is fixed with a connecting rod (18), and the lower end of the connecting rod (18) A shaft coupling (19) is fixed, and the drive shaft (21) is fixed at the lower end of the shaft coupling (19) through the first one-way bearing (20). The switch housing (15) at the lower end of the drive shaft (21) is provided with a hollow Cavity (22), the outer edge of the lower part of the drive shaft (21) is a helical surface (21a), the helical surface (21a) is covered with a transmission sleeve (23), and the inner wall of the transmission sleeve (23) is in line with the helical surface (21a). The matched threaded notch (24), the second one-way bearing (25) is set on the outer cover of the transmission sleeve (23), the rotation of the first one-way bearing (20) and the second one-way bearing (25) are opposite, and the second one-way bearing (25) The outer cover of the bearing (25) is equipped with a fixed disk (26), and the upper surface of the fixed disk (26) has insulating wires (27) which are divided into four parts equally, and the fixed disk (26) between the insulating wires (27) Conductive layers (28) are provided respectively, and the conductive layers (28) are connected to the terminal posts (29) placed outside the touch switch (14) through wires, and the drive shaft (21) above the transmission sleeve (23) passes through A conductive plate (30) is provided, and the upper end surface of the conductive plate (30) is in contact with a limit baffle (31) provided in the switch housing (15), the first electromagnet (6) and the second electromagnet ( 12) Connect the power supply via the terminal posts (29) of the conductive layers (28) at opposite angles to each other. 2. The point-touch welding mask for automatically opening and closing shading lenses according to claim 1, characterized in that the lower end of the point-touch switch (14) is fixed on the cover body (1) via bolts (32), The other end of bolt (32) is placed outside the cover body (1). 3. The touch-type welding mask for automatically opening and closing the shading lens according to claim 1, characterized in that, the front end of the shading mirror (4) is provided with a see-through glass (33). 4. The point-touch type automatic opening and closing shading lens welding mask according to claim 1, characterized in that the shaft coupling (19) is a cylinder, the upper end of the cylinder is provided with a shaft hole, and the lower end is provided with a bearing hole. 5. The point-touch automatic opening and closing shading lens welding mask according to claim 1, characterized in that, the transmission sleeve (23) is a cylinder with upper and lower through holes inside, and the through hole is provided with a spiral threaded notch (24) to match face (21a). 6. The welding mask for touch-type automatic opening and closing shading lenses according to claim 1, characterized in that, the upper surface of the conductive layer (28) is rough, and the lower sides of the two ends of the conductive plate (30) are provided with There is a conductive block (34) of the same material as the conductive block (34), and the lower surface of the conductive block (34) is rough. 7 . The point-touch welding mask for automatically opening and closing shading lenses according to claim 1 , characterized in that, a limit plate is provided in the observation window ( 2 ) at the upper end of the magnetic lock head ( 10 ). 8. The point-touch automatic opening and closing shading lens welding mask according to claim 1, characterized in that there are a plurality of upwardly inclined ventilation holes on the cover body (1) on both sides of the observation window (2) .