Negative-pressure airtight detection machine for collision assembly

Abstract

The utility model discloses a collision assembly negative pressure air tightness detection machine, which relates to the technical field of air tightness detection, and adopts the technical scheme that the collision assembly negative pressure air tightness detection machine comprises a bottom plate, two brackets are fixedly connected to the top of the bottom plate, a base plate is fixedly connected to the two brackets, and an air bag main body is arranged at the bottom of the base plate; the connecting block is fixedly connected to the bottom of the base plate, the bottom end of the connecting block is fixedly connected with a first pipeline, the first pipeline is fixedly sleeved with a connecting piece, the bottom of the connecting piece is fixedly connected with a rubber ring, and the rubber ring makes contact with a mounting plate on the air bag body; the air bag fixing device has the advantages that the two-way screw is controlled to enable the two threaded blocks and the two clamping plates to move towards the middle, so that the two clamping plates can be arranged outside the connecting piece and the mounting plate on the air bag body in a sleeving mode, fixed connection of the air bag body can be completed, the butt joint step is simple and convenient, and the butt joint efficiency is improved. And the consumed time is reduced, so that the detection efficiency of the air tightness can be improved.

Description

Technical Field

[0001] This utility model relates to the field of airtightness testing technology, specifically to a negative pressure airtightness testing machine for collision components. Background Technology

[0002] There are many types of collision components, and airbags are one of them. They can play a protective role during a collision. Airbags have very high requirements for air tightness, so the air tightness of airbags needs to be tested during manufacturing.

[0003] A search revealed a utility model patent with publication number CN218271256U. The patent required bolts and nuts to securely connect the airbag's inflation port to the connecting piece at the bottom of the ventilation pipe. This cumbersome connection process reduced the efficiency of airtightness testing, necessitating an improvement.

[0004] Therefore, it is necessary to invent a negative pressure airtightness testing machine for collision components. Summary of the Invention

[0005] Therefore, this utility model provides a negative pressure airtightness testing machine for collision components to solve the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a negative pressure airtightness testing machine for collision components, comprising:

[0007] The base plate has two brackets fixedly connected to its top, and a base plate is fixedly connected to the two brackets. The bottom of the base plate is provided with the airbag body.

[0008] A connecting block is fixedly connected to the bottom of the base plate. A pipe is fixedly connected to the bottom end of the connecting block. A connecting piece is fixedly sleeved on the outside of the pipe. A rubber ring is fixedly connected to the bottom of the connecting piece. The rubber ring is in contact with the mounting plate on the airbag body.

[0009] Two support blocks are provided, and both support blocks are fixedly connected to the bottom of the base plate. Bidirectional screws are embedded in the two support blocks and the connecting block. Two threaded blocks are sleeved on the outside of the bidirectional screws, and the threaded blocks are connected to the bidirectional screws by threads.

[0010] Two card plates are provided, and the two card plates are respectively fixedly connected to the bottom of two threaded blocks. Each of the two card plates has a through groove. The connecting piece and the mounting plate on the airbag body are located in the two through grooves. The bottom of each of the two through grooves is fixedly connected with a pin. Both pins are in sliding contact with the mounting plate on the airbag body.

[0011] Preferably, two limiting rods are fixedly connected to the bottom of the substrate, and the two limiting rods pass through the two threaded blocks and slide in contact with them respectively.

[0012] Preferably, a knob is fixedly connected to one end of the bidirectional screw.

[0013] Preferably, a vacuum pump is fixedly connected to the top of the substrate, and a second pipe is fixedly embedded on the rear side of the first pipe, with the end of the second pipe fixedly connected to the outlet of the vacuum pump.

[0014] Preferably, a third pipe is fixedly embedded in the second pipe, an electronic switch valve is provided on the second pipe, an electronic switch valve is provided on the third pipe, and a pressure sensor is also fixedly embedded in the third pipe.

[0015] Preferably, the pipe passes through the substrate and is fixedly connected to it.

[0016] Preferably, a display screen is provided on the front side of the base plate, and the display screen is electrically connected to the pressure sensor.

[0017] Preferably, support legs are fixedly connected to the four corners of the bottom of the base plate.

[0018] Preferably, the bidirectional screw is connected to the support block and the connecting block via bearings.

[0019] The beneficial effects of this utility model are:

[0020] By designing a bidirectional screw, two threaded blocks, two clamping plates, and two pins, the bidirectional screw is controlled to move the two threaded blocks and two clamping plates toward the center. In this way, the two clamping plates can be fitted onto the outside of the mounting plate on the connecting piece and the airbag body, thus completing the fixed connection of the airbag body. The docking process is simple and convenient, and the time consumed is reduced, thereby increasing the efficiency of airtightness testing. Attached Figure Description

[0021] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0022] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 The main sectional view provided for this utility model;

[0025] Figure 3 Provided by this utility model Figure 2 Enlarged view of point A in the image;

[0026] Figure 4 A side sectional view provided for this utility model;

[0027] Figure 5 Provided by this utility model Figure 4 Enlarged view of point B in the image;

[0028] Figure 6 The rear-view perspective view provided for this utility model;

[0029] In the diagram: 1. Base plate; 2. Bracket; 3. Base plate; 4. Airbag body; 5. Connecting block; 6. Pipe 1; 7. Connecting piece; 8. Rubber ring; 9. Support block; 10. Bidirectional screw; 11. Threaded block; 12. Clamping plate; 13. Pin; 14. Limiting rod; 15. Knob; 16. Vacuum pump; 17. Pipe 2; 18. Pipe 3; 19. Electronic valve 1; 20. Electronic valve 2; 21. Pressure sensor; 22. Display screen; 23. Support leg. Detailed Implementation

[0030] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0031] See attached document Figure 1 - Appendix Figure 6 The present invention provides a negative pressure airtightness testing machine for collision components, comprising:

[0032] A base plate 1, with two supports 2 fixedly connected to the top of the base plate 1, and a base plate 3 fixedly connected to the two supports 2. An airbag body 4 is provided at the bottom of the base plate 3.

[0033] Connecting block 5 is fixedly connected to the bottom of base plate 3. A pipe 6 is fixedly connected to the bottom of connecting block 5. A connecting piece 7 is fixedly sleeved on the outside of pipe 6. A rubber ring 8 is fixedly connected to the bottom of connecting piece 7. The rubber ring 8 is in contact with the mounting plate on airbag body 4.

[0034] Support blocks 9 are provided in two, and both support blocks 9 are fixedly connected to the bottom of the base plate 3. Bidirectional screws 10 are embedded in the two support blocks 9 and the connecting block 5. Two threaded blocks 11 are sleeved on the outside of the bidirectional screws 10, and the threaded blocks 11 are connected to the bidirectional screws 10 by threads.

[0035] Two clamping plates 12 are provided. The two clamping plates 12 are fixedly connected to the bottom of the two threaded blocks 11 respectively. Each clamping plate 12 has a through groove. The connecting piece 7 and the mounting plate on the airbag body 4 are located in the two through grooves. The bottom of each through groove is fixedly connected to a pin 13. The two pins 13 are in sliding contact with the mounting plate on the airbag body 4.

[0036] A knob 15 is fixedly connected to one end of the double-ended screw 10;

[0037] In this embodiment, the bidirectional screw 10 is controlled to move the two threaded blocks 11 and the two clamping plates 12 toward the middle, so that the two clamping plates 12 can be fitted onto the outside of the connecting piece 7 and the mounting plate on the airbag body 4, thus completing the fixed connection of the airbag body 4, and the docking steps are simple and convenient.

[0038] In order to achieve the purpose of stable movement of the threaded block 11, the device adopts the following technical solution: two limiting rods 14 are fixedly connected to the bottom of the base plate 3. The two limiting rods 14 pass through the two threaded blocks 11 respectively and slide in contact with them. The limiting rods 14 can make the threaded block 11 move stably.

[0039] To achieve the detection objective, the device employs the following technical solution: A vacuum pump 16 is fixedly connected to the top of the substrate 3; a second pipe 17 is fixedly embedded on the rear side of the first pipe 6; the end of the second pipe 17 is fixedly connected to the outlet of the vacuum pump 16; a third pipe 18 is fixedly embedded on the second pipe 17; an electronic switch valve 19 is provided on the second pipe 17; an electronic switch valve 20 is provided on the third pipe 18; a pressure sensor 21 is also fixedly embedded on the third pipe 18; and the first pipe 6 penetrates the substrate 3 and is fixedly connected to it.

[0040] In order to display the pressure, the device adopts the following technical solution: a display screen 22 is provided on the front side of the base plate 1. The display screen 22 is electrically connected to the pressure sensor 21. The pressure can be displayed by electrically connecting the display screen 22.

[0041] In order to achieve the purpose of support, the device adopts the following technical solution: support legs 23 are fixedly connected to the four corners of the bottom of the base plate 1, and the support legs 23 can support the device.

[0042] In order to reduce wear, the device adopts the following technical solution: the bidirectional screw 10 is connected to the support block 9 and the connecting block 5 through bearings.

[0043] The usage process of this utility model is as follows: When it is necessary to test the air tightness of the airbag body 4, align the mounting plate and connecting piece 7 on the airbag body 4. At the same time, the mounting plate will contact the rubber ring 8. Then, turn the knob 15 to rotate the bidirectional screw 10. Since there are two threads with opposite spiral directions on the bidirectional screw 10, the rotation of the bidirectional screw 10 can move the two threaded blocks 11 towards the middle, and then move the two clamping plates 12 towards the middle. Gradually, the two clamping plates 12 can be fitted onto the outside of the connecting piece 7 and the mounting plate on the airbag body 4. In this way, the fixed connection of the airbag body 4 can be completed. The docking steps are simple and convenient, and the time consumed will be reduced, thereby increasing the efficiency of air tightness testing. Since pins 13 are designed on both grooves, the two clamping plates 12 can also exert a squeezing effect when they move towards the middle under the action of the two pins 13, thereby reducing the distance between the connecting piece 7 and the mounting plate. At the same time, it can also squeeze the rubber ring 8 to cause elastic deformation, thereby increasing the sealing effect between the airbag body 4 and the pipe 6.

[0044] After the airbag body 4 is docked, control electronic switch valve 19 to open and electronic switch valve 20 to close. Then control vacuum pump 16 to work. Then, under the action of pipe 2 17 and pipe 1 6, the airbag body 4 can be drawn into a vacuum negative pressure. At the same time, pressure sensor 21 detects the real-time pressure of airbag body 4. When the pressure is drawn to the specified value, control vacuum pump 16 to stop working and control electronic switch valve 19 to close. Since pressure sensor 21 is electrically connected to display screen 22, display screen 22 can display the negative pressure inside airbag body 4. Then observe for a period of time to see if the negative pressure of airbag body 4 changes. If it changes, it means that the airtightness of airbag body 4 is unqualified; otherwise, it is qualified.

[0045] After the test is completed, the electronic switch valve 20 is opened, so that the pressure inside the airbag body 4 can be restored under the action of the pipe 3 18. Then, the knob 15 is reversed to move the two threaded blocks 11 and the two clamping plates 12 outward, thereby disengaging the mounting plate and connecting piece 7. Then the airbag can be removed, thus completing the airtightness test.

[0046] The above are merely preferred embodiments of this utility model. Any person skilled in the art may modify this utility model or modify it into an equivalent technical solution using the technical solutions described above. Therefore, any simple modifications or equivalent substitutions made based on the technical solutions of this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A crash assembly negative pressure air tightness detection machine, characterized in that, include: A base plate (1) is fixedly connected to two supports (2) at the top of the base plate (1), and a base plate (3) is fixedly connected to the two supports (2). An airbag body (4) is provided at the bottom of the base plate (3). A connecting block (5) is fixedly connected to the bottom of the base plate (3). A pipe (6) is fixedly connected to the bottom end of the connecting block (5). A connecting piece (7) is fixedly sleeved on the outside of the pipe (6). A rubber ring (8) is fixedly connected to the bottom of the connecting piece (7). The rubber ring (8) is in contact with the mounting plate on the airbag body (4). Support blocks (9) are provided in two. Both support blocks (9) are fixedly connected to the bottom of the base plate (3). Two bidirectional screws (10) are embedded on the two support blocks (9) and the connecting block (5). Two threaded blocks (11) are sleeved on the outside of the bidirectional screws (10). The threaded blocks (11) are connected to the bidirectional screws (10) by threads. Two card plates (12) are provided. The two card plates (12) are fixedly connected to the bottom of the two threaded blocks (11). Both card plates (12) have through slots. The connecting piece (7) and the mounting plate on the airbag body (4) are located in the two through slots. The bottom of the two through slots is fixedly connected with pins (13). The two pins (13) slide in contact with the mounting plate on the airbag body (4).

2. The negative pressure air tightness detection machine of a crash assembly according to claim 1, wherein: The bottom of the substrate (3) is fixedly connected to two limiting rods (14), which pass through two threaded blocks (11) and slide in contact with them respectively.

3. The negative pressure air tightness detection machine of a crash assembly according to claim 1, wherein: A knob (15) is fixedly connected to one end of the bidirectional screw (10).

4. The negative pressure air tightness detection machine of a crash assembly according to claim 1, wherein: A vacuum pump (16) is fixedly connected to the top of the substrate (3), and a second pipe (17) is fixedly embedded on the rear side of the first pipe (6). The end of the second pipe (17) is fixedly connected to the outlet of the vacuum pump (16).

5. The negative pressure air tightness detection machine of a crash assembly according to claim 4, wherein: Pipeline 3 (18) is fixedly embedded on pipeline 2 (17), electronic switch valve 1 (19) is provided on pipeline 2 (17), electronic switch valve 2 (20) is provided on pipeline 3 (18), and pressure sensor (21) is also fixedly embedded on pipeline 3 (18).

6. The negative pressure air tightness detection machine of a crash assembly according to claim 5, wherein: The pipe (6) penetrates the substrate (3) and is fixedly connected to it.

7. The negative pressure air tightness detection machine of a crash assembly according to claim 1, wherein: The base plate (1) is provided with a display screen (22) on the front side, and the display screen (22) is electrically connected to the pressure sensor (21).

8. The negative pressure air tightness detection machine of a crash assembly according to claim 1, wherein: Support legs (23) are fixedly connected to the four corners of the bottom of the base plate (1).

9. The negative pressure air tightness detection machine of a crash assembly according to claim 1, wherein: The bidirectional screw (10) is connected to the support block (9) and the connecting block (5) via bearings.

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