Pressure detection device for automobile safety air bag generator

Abstract

The utility model relates to the technical field of airbag generator detection, and discloses a pressure detection device for an automobile safety airbag generator, which comprises a detection workbench and a generator main body, an efficient detection mechanism is arranged on the detection workbench, and a safety protection mechanism is arranged on the front surface of the detection workbench. The safety protection mechanism comprises a fixing block, the fixing block is fixedly installed on the front face of the detection workbench, and the outer wall of the inner side of the fixing block is rotationally connected with a rotating shaft. Through the design of the transparent acrylic baffle and the arc-shaped extension plate, a user can conveniently observe the pressure applying state, meanwhile, bursting parts can be blocked, the problem that workers are hurt is avoided, and when the bursting parts collide with the transparent acrylic baffle and the arc-shaped extension plate, the bursting parts can be prevented from being damaged by the transparent acrylic baffle and the arc-shaped extension plate. And the transparent acrylic baffle plate and the arc-shaped extension plate can rotate towards the front side, and meanwhile, the elastic piece is compressed, so that the function of buffering the impact force of the part is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of airbag generator detection, in particular to a pressure detection device for an automobile safety airbag generator. Background Art

[0002] Automobile airbag generators are composed of substances such as sodium nitride or ammonium nitrate. When a car is hit hard while driving at high speed, these substances will quickly decompose and produce a large amount of gas to fill the airbag. The gas generator mainly produces a large amount of gas to fill the airbag in a short period of time. The generated gas must be harmless to the human body and the temperature cannot be too high. At the same time, the gas generator is required to have high reliability and stability. At present, there are three main types of gas generators: compressed gas type, pyrotechnic type and hybrid type. Among them, the hybrid gas generator is a generator that combines compressed gas type and pyrotechnic type, and is also a widely used gas generator. Automobile airbag generators need to undergo a compression test before leaving the factory to ensure safety in use.

[0003] A Chinese patent discloses a pressure detection device for an automobile airbag generator, with the publication number CN214373880U. The technical solution disclosed in the patent document is as follows: a base, a first side plate, a second side plate and a top plate, wherein the first side plate and the second side plate are symmetrically fixed at the two ends of the top of the base, and the top plate is fixed on the top of the first side plate and the second side plate; a detection unit, wherein the detection unit is used to detect the pressure of the automobile airbag generator and transmit data; and an adjustment mechanism, wherein the adjustment mechanism is used to adjust the detection position of the detection unit.

[0004] In order to solve the problem that the existing structure cannot test multiple test pieces at the same time, the existing technology adopts the method of designing an adjustment mechanism and a detection unit to work together. However, the safety is still poor. If the generator is of unqualified quality and is damaged during the pressure process, parts are likely to burst out, and the bursting parts are likely to cause harm to nearby workers. Utility Model Content

[0005] The utility model aims to provide a pressure detection device for an automobile safety airbag generator, so as to solve the problem of poor safety in the prior art.

[0006] The utility model provides the following technical solution: a pressure detection device for automobile airbag generator, comprising a detection workbench and a generator body, wherein the detection workbench is provided with a high-efficiency detection mechanism, and the front of the detection workbench is provided with a safety protection mechanism.

[0007] The safety protection mechanism includes a fixed block, which is fixedly installed on the front side of the detection workbench, a rotating shaft is rotatably connected on the outer wall on the inner side of the fixed block, a transparent acrylic baffle is fixedly installed on the top of the rotating shaft, an arc-shaped extension plate is fixedly installed on the top of the transparent acrylic baffle, an alloy connecting arm is welded on the front side of the fixed block, a fixed frame is fixedly installed on the front side of the transparent acrylic baffle, a rotating block is rotatably connected on the inner wall of the fixed frame, a support rod is fixedly installed on the front side of the rotating block, an end of the support rod away from the rotating block is fixedly connected to an elastic member, and an end of the elastic member away from the support rod is fixedly installed on the back side of the alloy connecting arm, and the operator can be protected by the cooperation of the transparent acrylic baffle and the arc-shaped extension plate.

[0008] As a preferred embodiment of the above technical solution, the transparent acrylic baffle is fixedly connected with reinforcing ribs inside, the back of the transparent acrylic baffle is coated with a glue layer, and the back of the glue layer is detachably connected with a hydrogel buffer film. The transparent acrylic baffle can be protected by the design of the hydrogel buffer film.

[0009] As a preferred embodiment of the above technical solution, the efficient detection mechanism includes a lifting support rod, which is welded to the top of the detection workbench. A pressure platform is fixedly installed at the end of the lifting support rod away from the detection workbench. A hydraulic cylinder is fixedly installed at the center of the top of the pressure platform. The hydraulic cylinder can drive the pressure base plate to rise and fall, thereby facilitating the pressure detection work.

[0010] As a preferred embodiment of the above technical solution, the telescopic end of the hydraulic cylinder extends to the bottom of the pressure platform and is fixedly connected to a receiving pressure plate, a follower rod is welded to the top of the receiving pressure plate, and the outer wall of the follower rod is slidably connected to the inner wall of the pressure platform, and the follower rod can improve the stability of the movement of the receiving pressure plate.

[0011] As a preferred embodiment of the above technical solution, a pressure sensor is fixedly installed on the bottom of the pressure plate, and a pressure base plate is fixedly installed on the bottom of the pressure sensor. The bottom of the pressure base plate is movably connected to the top of the generator body, and the pressure base plate can apply pressure to the generator body from the top.

[0012] As a preferred embodiment of the above technical solution, a groove is provided at the top of the pressure base plate, an exhaust hole is provided at the bottom of the pressure base plate, an annular cover is fixedly connected to the bottom of the inner wall of the groove, and a circular cover is fixedly installed at the bottom of the inner wall of the groove.

[0013] As a preferred embodiment of the above technical solution, a connecting pipe is fixedly connected to the outer wall of the circular cover, and one end of the connecting pipe away from the circular cover is fixedly connected to the inner wall of the annular cover. A cylindrical fan is fixedly connected to the top of the circular cover, and an air filter is detachably connected to the top of the cylindrical fan. After the cylindrical fan is working, air can be output from the bottom of the exhaust hole for blowing and cleaning the top of the movable detection platform.

[0014] As a preferred embodiment of the above technical solution, the high-efficiency detection mechanism also includes a triangular limit plate and a fixed side frame. The triangular limit plate is welded at the corner of the inner wall of the detection workbench. The top of the triangular limit plate is movably connected with a movable detection platform. The top of the movable detection platform is fixedly connected with a limit column foot. The top of the movable detection platform is movably connected to the bottom of the generator body, and the outer wall of the limit column foot is movably connected to the inner wall of the generator body. The design of the limit column foot is convenient for users to install the generator body on the movable detection platform in sequence.

[0015] As a preferred embodiment of the above technical solution, the fixed side frame is fixedly installed on the side of the detection workbench, an electromagnet is fixedly installed on the inner wall of the fixed side frame, a return spring is fixedly installed on the side of the fixed side frame close to the detection workbench, and an end of the return spring away from the fixed side frame is fixedly connected to an iron connector. Through the design of the electromagnet and the return spring, the extension and retraction of the iron connector can be controlled, which is convenient for users to disassemble and assemble the movable detection platform.

[0016] As a preferred embodiment of the above technical solution, the outer wall of the iron connector is slidably connected to the inner wall of the detection workbench, the end of the iron connector away from the reset spring is movably connected to the side of the movable detection table, and the side of the electromagnet close to the detection workbench is movably connected to the side of the iron connector.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The utility model uses the design of the transparent acrylic baffle and the arc-shaped extension plate to facilitate users to observe the pressure state and block the ejected parts to avoid the problem that workers may be injured. The design of the fixed block and the rotating shaft allows the transparent acrylic baffle and the arc-shaped extension plate to be rotatably connected to the front side of the detection workbench. When the ejected parts hit the transparent acrylic baffle and the arc-shaped extension plate, the transparent acrylic baffle and the arc-shaped extension plate can rotate toward the front side and compress the elastic parts at the same time, thereby achieving the function of buffering the impact force of the parts and extending the service life of the transparent acrylic baffle. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the utility model;

[0020] Figure 2This is a schematic diagram of the structure of the safety protection mechanism of the utility model;

[0021] Figure 3 This is a partial structural schematic diagram of the transparent acrylic baffle of the utility model;

[0022] Figure 4 This is a structural schematic diagram of the pressure-applying platform of the utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the pressure base plate of the utility model;

[0024] Figure 6 This is a schematic diagram of the separation structure of the detection workbench and the movable detection table of the utility model;

[0025] Figure 7 for Figure 6 Enlarged view of structure A in FIG.

[0026] In the figure: 1. Testing workbench; 11. Generator body; 2. High-efficiency testing mechanism; 21. Lifting rod; 22. Pressure platform; 23. Hydraulic cylinder; 24. Follower rod; 25. Pressure plate; 26. Pressure sensor; 27. Pressure bottom plate; 271. Groove; 272. Exhaust hole; 273. Ring cover; 274. Round cover; 275. Connecting pipe; 276. Cylinder fan; 277. Air filter; 28. Triangular limit plate; 281. Movable testing platform; 282, limit column foot; 29, fixed side frame; 291, electromagnet; 292, reset spring; 293, iron connector; 3, safety protection mechanism; 31, fixed block; 32, rotating shaft; 33, transparent acrylic baffle; 331, reinforcing rib; 332, glue layer; 333, hydrogel buffer film; 34, arc extension plate; 35, alloy connecting arm; 36, fixed frame; 37, rotating block; 38, support rod; 39, elastic part. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0028] like Figure 1-Figure 3As shown, the utility model provides a technical solution: a pressure detection device for an automobile airbag generator, comprising a detection workbench 1 and a generator body 11, a high-efficiency detection mechanism 2 is arranged on the detection workbench 1, a safety protection mechanism 3 is arranged on the front of the detection workbench 1, the safety protection mechanism 3 comprises a fixed block 31, the fixed block 31 is fixedly installed on the front of the detection workbench 1, a rotating shaft 32 is rotatably connected on the outer wall of the inner side of the fixed block 31, a transparent acrylic baffle 33 is fixedly installed on the top of the rotating shaft 32, an arc-shaped extension plate 34 is fixedly installed on the top of the transparent acrylic baffle 33, an alloy connecting arm 35 is welded on the front of the fixed block 31, a fixed frame 36 is fixedly installed on the front of the transparent acrylic baffle 33, a rotating block 37 is rotatably connected on the inner wall of the fixed frame 36, a support rod 38 is fixedly installed on the front of the rotating block 37, an end of the support rod 38 away from the rotating block 37 is fixedly connected to an elastic member 39, an end of the elastic member 39 away from the support rod 38 is fixedly installed on the back of the alloy connecting arm 35, and the transparent acrylic baffle 36 is fixedly installed on the front of the transparent acrylic baffle 33. The transparent acrylic baffle 33 is fixedly connected with a reinforcing rib 331 inside, and a glue layer 332 is coated on the back of the transparent acrylic baffle 33. A hydrogel buffer film 333 is detachably connected to the back of the glue layer 332. The user can observe the pressure state through the transparent acrylic baffle 33. The transparent acrylic baffle 33 and the arc-shaped extension plate 34 can be used to block the ejected parts to ensure the safety of the workers. The design of the fixed block 31 and the rotating shaft 32 makes the transparent acrylic baffle 33 and the arc-shaped extension plate 34 can be used to prevent the ejected parts from being ejected. The plate 34 is rotatably connected to the front side of the inspection workbench 1. When the ejected parts hit the transparent acrylic baffle 33 and the arc-shaped extension plate 34, the transparent acrylic baffle 33 and the arc-shaped extension plate 34 can rotate toward the front side and compress the elastic member 39 at the same time to achieve the function of buffering the impact force of the parts. The hydrogel buffer film 333 is detachably connected to the transparent acrylic baffle 33 through the glue layer 332. The hydrogel buffer film 333 can produce a certain elastic deformation to buffer and protect the transparent acrylic baffle 33.

[0029] As an implementation method in this embodiment, Figure 1 , Figure 4 , Figure 5As shown, the efficient detection mechanism 2 includes a lifting support rod 21, which is welded to the top of the detection workbench 1, and a pressure platform 22 is fixedly installed at one end of the lifting support rod 21 away from the detection workbench 1, and a hydraulic cylinder 23 is fixedly installed at the center of the top of the pressure platform 22. The telescopic end of the hydraulic cylinder 23 extends to the bottom of the pressure platform 22 and is fixedly connected to a receiving pressure plate 25. A follower rod 24 is welded to the top of the receiving pressure plate 25. The outer wall of the follower rod 24 is slidably connected to the inner wall of the pressure platform 22, and a pressure sensor 26 is fixedly installed at the bottom of the receiving pressure plate 25. A pressure bottom plate 27 is fixedly installed at the bottom of the pressure sensor 26, and the bottom of the pressure bottom plate 27 is movably connected to the top of the generator body 11. A groove 271 is provided at the top of the pressure bottom plate 27, and an exhaust hole 272 is provided at the bottom of the pressure bottom plate 27. An annular cover 273 is fixedly connected to the bottom of the inner wall of the groove 271, and a circular cover 274 is fixedly installed at the bottom of the inner wall of the groove 271. A connecting pipe 275 is fixedly connected to the outer wall of the circular cover 274, and one end of the connecting pipe 275 away from the circular cover 274 is fixedly connected to the inner wall of the annular cover 273. The top is fixedly connected with a cylindrical fan 276, and the top of the cylindrical fan 276 is detachably connected with an air filter 277. The hydraulic cylinder 23 is controlled to extend to drive the pressure plate 25 to move downward, and the follower rod 24 will slide on the inner wall of the pressure platform 22 synchronously to improve the stability of the pressure plate 25. Then the pressure base plate 27 can be attached to the top of the generator body 11 to apply pressure to it, and the pressure value is monitored by the pressure sensor 26. The pressure sensor 26 and the hydraulic cylinder 23 are both connected to the external controller with electrical signals. After reaching the preset value, the hydraulic pressure is controlled by the external controller The cylinder 23 is reset to realize the function of pressure detection. The user then checks the generator body 11 to remove unqualified products. The air filter 277 is detachably connected to the top of the cylindrical fan 276 by bolts. The cylindrical fan 276 is controlled to work, which can absorb the air filtered by the air filter 277 and then transport it to the circular cover 274. Then, it is transported to the annular cover 273 through the connecting pipe 275, and then output from the bottom of the exhaust hole 272 to blow out the debris on the top of the movable detection table 281, thereby improving the user's cleaning efficiency on the top of the movable detection table 281.

[0030] As an implementation method in this embodiment, Figure 1 , Figure 6 , Figure 7As shown, the efficient detection mechanism 2 also includes a triangular limit plate 28 and a fixed side frame 29. The triangular limit plate 28 is welded at the corner of the inner wall of the detection workbench 1. The top of the triangular limit plate 28 is movably connected with a movable detection platform 281. The top of the movable detection platform 281 is fixedly connected with a limit column foot 282. The top of the movable detection platform 281 is movably connected to the bottom of the generator body 11. The outer wall of the limit column foot 282 is movably connected to the inner wall of the generator body 11. The fixed side frame 29 is fixedly installed on the side of the detection workbench 1. An electromagnet 291 is fixedly installed on the inner wall of the fixed side frame 29. A reset spring 292 is fixedly installed on the side of the fixed side frame 29 close to the detection workbench 1. The end of the reset spring 292 away from the fixed side frame 29 is fixedly connected with an iron connector 293. The outer wall of the iron connector 293 is slidably connected to the inner wall of the detection workbench 1. The end of the iron connector 293 away from the reset spring 292 is movably plugged into the movable detection platform 281. On the side, the electromagnet 291 is movably connected to the side of the iron connector 293 close to the detection workbench 1. The electromagnet 291 is controlled to generate magnetic force by being energized, so as to magnetically attract the iron connector 293, causing the iron connector 293 to compress the reset spring 292 and withdraw from the inside of the movable detection platform 281, so that the user can disassemble and replace the movable detection platform 281. When detecting generator bodies 11 of different specifications, it can be replaced with an movable detection platform 281 with a limiting column foot 282 that fits the generator body 11. After the replacement of the movable detection platform 281 is completed, the electromagnet 291 is controlled to be powered off. The iron connector 293 can be driven to be plugged back into the inside of the movable detection platform 281 by the reset elastic force of the reset spring 292, so as to complete the fixing of the movable detection platform 281. The design of the triangular limiting plate 28 can provide limiting support for the movable detection platform 281, and the design of the limiting column foot 282 can limit the generator body 11.

[0031] Working principle: When performing pressure testing, the generator body 11 is inserted into the limit column foot 282 in turn, and then the hydraulic cylinder 23 is controlled to extend, driving the pressure plate 25 to move downward, so that the pressure base plate 27 fits on the top of the generator body 11 to apply pressure to it. The pressure value is monitored by the pressure sensor 26. After reaching the preset value, the hydraulic cylinder 23 is controlled to reset. The user then checks the generator body 11 to remove unqualified products. During the extension of the hydraulic cylinder 23, the operator moves to the front of the detection workbench 1 and observes the pressure state through the transparent acrylic baffle 33. The cooperation of the transparent acrylic baffle 33 and the arc-shaped extension plate 34 can block the ejected parts.

[0032] The above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it.

Claims

1. A pressure detection device for an automobile airbag generator, comprising a detection workbench (1) and a generator body (11), characterized in that: The detection workbench (1) is provided with a high-efficiency detection mechanism (2), and the front of the detection workbench (1) is provided with a safety protection mechanism (3); The safety protection mechanism (3) comprises a fixed block (31), the fixed block (31) is fixedly mounted on the front side of the detection workbench (1), a rotating shaft (32) is rotatably connected to the outer wall inside the fixed block (31), a transparent acrylic baffle (33) is fixedly mounted on the top of the rotating shaft (32), an arc-shaped extension plate (34) is fixedly mounted on the top of the transparent acrylic baffle (33), an alloy connecting arm (35) is welded on the front side of the fixed block (31), a fixed frame (36) is fixedly mounted on the front side of the transparent acrylic baffle (33), a rotating block (37) is rotatably connected to the inner wall of the fixed frame (36), a supporting rod (38) is fixedly mounted on the front side of the rotating block (37), an end of the supporting rod (38) away from the rotating block (37) is fixedly connected to an elastic member (39), and an end of the elastic member (39) away from the supporting rod (38) is fixedly mounted on the back side of the alloy connecting arm (35).

2. A pressure detection device for an automobile airbag inflator according to claim 1, characterized in that: A reinforcing rib (331) is fixedly connected inside the transparent acrylic baffle (33), a glue layer (332) is coated on the back of the transparent acrylic baffle (33), and a hydrogel buffer film (333) is detachably connected to the back of the glue layer (332).

3. A pressure detection device for an automobile airbag inflator according to claim 1, characterized in that: The high-efficiency detection mechanism (2) comprises a lifting support rod (21), wherein the lifting support rod (21) is welded to the top of the detection workbench (1), and a pressure platform (22) is fixedly installed at one end of the lifting support rod (21) away from the detection workbench (1), and a hydraulic cylinder (23) is fixedly installed at the center of the top of the pressure platform (22).

4. A pressure detection device for an automobile airbag inflator according to claim 3, characterized in that: The telescopic end of the hydraulic cylinder (23) extends to the bottom of the pressure platform (22) and is fixedly connected to a receiving pressure plate (25), and a follower rod (24) is welded to the top of the receiving pressure plate (25), and the outer wall of the follower rod (24) is slidably connected to the inner wall of the pressure platform (22).

5. A pressure detection device for automobile airbag inflator according to claim 4, characterized in that: A pressure sensor (26) is fixedly mounted on the bottom of the receiving pressure plate (25), a pressure base plate (27) is fixedly mounted on the bottom of the pressure sensor (26), and the bottom of the pressure base plate (27) is movably connected to the top of the generator body (11).

6. A pressure detection device for automobile airbag inflator according to claim 5, characterized in that: The top of the pressure bottom plate (27) is provided with a groove (271), the bottom of the pressure bottom plate (27) is provided with an exhaust hole (272), the bottom of the inner wall of the groove (271) is fixedly connected with an annular cover (273), and the bottom of the inner wall of the groove (271) is fixedly installed with a circular cover (274).

7. A pressure detection device for automobile airbag inflator according to claim 6, characterized in that: A connecting pipe (275) is fixedly connected to the outer wall of the circular cover (274); one end of the connecting pipe (275) away from the circular cover (274) is fixedly connected to the inner wall of the annular cover (273); a cylindrical fan (276) is fixedly connected to the top of the circular cover (274); and an air filter (277) is detachably connected to the top of the cylindrical fan (276).

8. The pressure detection device for automobile airbag inflator according to claim 1, characterized in that: The high-efficiency detection mechanism (2) also includes a triangular limit plate (28) and a fixed side frame (29); the triangular limit plate (28) is welded to the corner of the inner wall of the detection workbench (1); the top of the triangular limit plate (28) is movably connected to a movable detection platform (281); the top of the movable detection platform (281) is fixedly connected to a limit column foot (282); the top of the movable detection platform (281) is movably connected to the bottom of the generator body (11); and the outer wall of the limit column foot (282) is movably connected to the inner wall of the generator body (11).

9. A pressure detection device for an automobile airbag inflator according to claim 8, characterized in that: The fixed side frame (29) is fixedly mounted on the side of the detection workbench (1); an electromagnet (291) is fixedly mounted on the inner wall of the fixed side frame (29); a return spring (292) is fixedly mounted on the side of the fixed side frame (29) close to the detection workbench (1); and an end of the return spring (292) away from the fixed side frame (29) is fixedly connected to an iron connector (293).

10. A pressure detection device for automobile airbag inflator according to claim 9, characterized in that: The outer wall of the iron connector (293) is slidably connected to the inner wall of the detection workbench (1); the end of the iron connector (293) away from the return spring (292) is movably connected to the side of the movable detection platform (281); and the side of the electromagnet (291) close to the detection workbench (1) is movably connected to the side of the iron connector (293).

Images