An electronic switch air tightness test fixture

Abstract

The present invention relates to an electronic switch air tightness test fixture, comprising a base, a positioning mechanism and an inflation sealing mechanism respectively arranged on the base; the positioning mechanism comprises a positioning seat, a material trough arranged on the top of the positioning seat for placing the electronic switch, positioning cylinders respectively arranged on both sides of the positioning seat and with driving ends capable of extending into the material trough for fixing the electronic switch, and an opening arranged at one end of the positioning seat and communicating with the material trough; the inflation sealing mechanism comprises a bracket, a shell with one end arranged on the bracket and the other end connected to the opening, an inflation sealing component arranged in the shell for internal expansion sealing and inflation of the electronic switch interface, and a translation cylinder arranged on the bracket for driving the inflation sealing component to move; the present invention can effectively fix the electronic switch through the positioning mechanism, and the inflation sealing mechanism adopts internal expansion for sealing, which can effectively seal the special-shaped interface, thereby improving the test accuracy.

Description

Technical Field

[0001] The invention relates to the field of air tightness testing, in particular to an air tightness testing fixture for an electronic switch. Background Art

[0002] Currently, many electronic switches require internal waterproofing, which means that after the electronic switches are produced, they need to be leak tested. Specifically, a leakage tester is used to inflate the internal part of the electronic switch through the interface, with an air pressure of 20KPa and a pressure maintenance of 1s. If the electronic switch does not leak, the product is qualified. Conversely, if the electronic switch leaks, the product is unqualified. However, some electronic switch interfaces have an anisotropic structure, resulting in poor sealing when the leakage tester is connected to the electronic switch interface, seriously affecting the test accuracy. Summary of the Invention

[0003] The purpose of the present invention is to provide an electronic switch air tightness test fixture in order to overcome the deficiencies of the prior art.

[0004] To achieve the above object, the technical solution adopted by the present invention is: an electronic switch airtightness test fixture, comprising a base, a positioning mechanism and an inflation sealing mechanism respectively provided on the base;

[0005] The positioning mechanism includes a positioning seat provided on the base, a material trough provided on the top of the positioning seat for placing the electronic switch, positioning cylinders provided on both sides of the positioning seat and with driving ends extending into the material trough for fixing the electronic switch, and an opening provided at one end of the positioning seat near the inflatable sealing mechanism and communicating with the material trough;

[0006] The inflatable sealing mechanism includes a bracket mounted on the base, a housing with one end mounted on the bracket and the other end connected to the opening, an inflatable sealing component mounted in the housing for performing internal expansion sealing and inflating the electronic switch interface, and a translation cylinder mounted on the bracket for driving the inflatable sealing component to move in the direction of the electronic switch.

[0007] The inflation sealing assembly includes a U-shaped frame placed horizontally and the tail of which is connected to the driving end of the translation cylinder, a slider arranged horizontally in the U-shaped frame, a spring arranged between the inner end of the slider and the tail of the U-shaped frame, a guide post arranged horizontally at the outer end of the slider, an extrusion block arranged at the head of the U-shaped frame and sleeved on the guide post, an extrusion part arranged on the extrusion block and sleeved on the guide post, a limiting part arranged at the head of the guide post and having a diameter larger than the diameter of the guide post, a sealing ring sleeved on the guide post and located between the extrusion part and the limiting part, a first limiting unit respectively arranged at the top and bottom of the slider, and a second limiting unit respectively arranged on both sides of the slider; the guide post is a hollow structure, and an inflation port is provided at the head of the guide post; an air pipe interface is provided on the slider; the air pipe interface is communicated with the guide post and is connected to the leakage tester through a hose.

[0008] Preferably, the first limiting unit includes at least one first limiting groove arranged on the shell and placed along the moving direction of the slider, and at least one first cam bearing follower arranged on the top or bottom of the slider and located in the first limiting groove; the second limiting unit includes at least one second limiting groove arranged on the U-shaped frame and placed along the moving direction of the slider, and at least one second cam bearing follower arranged on the side of the slider and located in the second limiting groove.

[0009] Preferably, the shell and the U-shaped frame are correspondingly provided with cover plates for covering the first limiting groove and the second limiting groove.

[0010] Preferably, a chamber is provided at one end of the positioning seat away from the inflatable sealing mechanism; a barcode scanner for scanning a QR code on the electronic switch is provided in the chamber.

[0011] Preferably, the positioning seat is provided with a sensor for detecting whether an electronic switch is placed in the trough.

[0012] Preferably, a universal quick-change connector and a universal quick-change joint are respectively provided on the base.

[0013] Preferably, handles are provided on both sides of the top of the base.

[0014] Preferably, the four corners of the base are respectively provided with connection holes.

[0015] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0016] The present invention can fix the electronic switch through the positioning mechanism, which is convenient for the inflation sealing mechanism to seal and inflate the electronic switch, thereby improving the test efficiency. The inflation sealing mechanism adopts internal expansion for sealing, which can effectively seal the special-shaped interface, thereby improving the test accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The technical solution of the present invention will be further described below with reference to the accompanying drawings:

[0018] Attachment Figure 1 This is a schematic diagram of the left side structure of the electronic switch air tightness test fixture of the present invention;

[0019] Attachment Figure 2 This is a schematic diagram of the right side structure of the electronic switch air tightness test fixture of the present invention;

[0020] Attachment Figure 3 This is a transverse cross-sectional view of the electronic switch air tightness test fixture of the present invention.

[0021] Attachment Figure 4 Schematic diagram of the structure of the positioning mechanism of the present invention;

[0022] Attachment Figure 5 It is a cross-sectional view of the positioning mechanism of the present invention when it is working;

[0023] Attachment Figure 6 It is a partial structural diagram of the inflation sealing mechanism of the present invention;

[0024] Attachment Figure 7 This is a schematic diagram of the structure of the inflatable sealing mechanism of the present invention after removing the housing;

[0025] Attachment Figure 8 It is a structural schematic diagram of the slider in the present invention;

[0026] Attachment Figure 9 This is a partial working diagram of the electronic switch air tightness test fixture of the present invention;

[0027] Attachment Figure 10 Schematic diagram of the structure of an existing electronic switch.

[0028] Among them: 1. Base; 11. Handle; 12. Connection hole; 13. VPC universal quick-change connector; 14. Universal quick-change connector; 2. Positioning mechanism; 21. Barcode scanner; 22. Positioning seat; 23. Opening; 24. Chamber; 25. Material trough; 26. Positioning cylinder; 27. Infrared sensor; 3. Inflatable sealing mechanism; 31. Cover; 32. Bracket; 33. Housing; 34. Inflatable sealing assembly; 341. U-shaped frame; 342. Second limit Position unit; 3421, second limiting groove; 3422, second cam bearing follower; 343, first limiting unit; 3431, first limiting groove; 3432, first cam bearing follower; 344, extrusion block; 3441, extrusion part; 345, slider; 346, spring; 347, guide column; 348, sealing ring; 349, limiting part; 35, translation cylinder; 36, air pipe interface; 37, hose; 4, electronic switch; 41, interface. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Attachment Figure 1-10The electronic switch air tightness test fixture of the present invention comprises a base 1, a positioning mechanism 2 and an inflatable sealing mechanism 3 respectively arranged on the base 1; the positioning mechanism 2 comprises a positioning seat 22 arranged on the base 1, a material trough 25 arranged on the top of the positioning seat 22 for placing the electronic switch 4, positioning cylinders 26 respectively arranged on both sides of the positioning seat 22 and with the driving end extending into the material trough 25 for fixing the electronic switch 4, and an opening 23 arranged at one end of the positioning seat 22 near the inflatable sealing mechanism 3 and communicating with the material trough 25; the inflatable sealing mechanism 3 comprises a The support 32 on the base 1, a shell 33 with one end arranged on the support 32 and the other end connected to the opening 23, an inflatable sealing component 34 arranged in the shell 33 for internal expansion sealing and inflation of the interface 41, and a translation cylinder 35 arranged on the support 32 for driving the inflatable sealing component 34 to move along the direction of the electronic switch 4; the inflatable sealing component 34 includes a U-shaped frame 341 placed horizontally and the tail end of which is connected to the driving end of the translation cylinder 35, a slider 345 arranged horizontally in the U-shaped frame 341, and a slider 345 arranged at the inner end of the slider 345 and the U-shaped frame 3 41, a spring 346 between the ends of the slider 345, a guide post 347 horizontally arranged at the outer end of the slider 345, an extrusion block 344 arranged at the head of the U-shaped frame 341 and sleeved on the guide post 347, an extrusion portion 3441 arranged on the extrusion block 344 and sleeved on the guide post 347, a limiting portion 349 arranged at the head of the guide post 347 and having a diameter larger than that of the guide post 347, a sealing ring 348 sleeved on the guide post 347 and located between the extrusion portion 3441 and the limiting portion 349, a first limiting unit 343 respectively arranged at the top and bottom of the slider 345, Second limiting units 342 are provided on either side of the slider 345; the guide post 347 is hollow, and an inflation port is provided at its head; an air pipe interface 36 is provided on the slider 345; the air pipe interface 36 is connected to the guide post 347 and to the F620 leak tester via a hose 37. During operation, a worker places the electronic switch 4 in the trough 25, then extends two positioning cylinders 26 into the trough 25 to secure the electronic switch 4, facilitating sealing and inflation of the electronic switch 4 by the inflation sealing mechanism 3, thereby improving testing efficiency.Then the translation cylinder 35 drives the inflatable sealing assembly 34 to move toward the electronic switch 4. When the sealing ring 348 enters the interface 41, the first limiting unit 343 limits the slider 345 to prevent the limiting portion 349, the guide post 347 and the slider 345 from continuing to move toward the electronic switch 4. Since a spring 346 is provided between the inner end of the slider 345 and the tail of the U-shaped frame 341, and the extrusion block 344 is sleeved on the guide post 347, when the translation cylinder 35 continues to drive the U-shaped frame 341 to move toward the electronic switch 4, the U-shaped frame 341 will drive the extrusion block 344 to press the sealing ring 348 through the extrusion portion 3441. The ring 348 is squeezed, causing the sealing ring 348 to deform and expand outward, contacting the inner wall of the interface 41 to achieve a seal. At this time, the second limiting unit 342 limits the position of the U-shaped frame 341, preventing the squeezing portion 3441 from further squeezing and damaging the sealing ring 348. Finally, the f620 leak tester inflates the electronic switch 4 through the hose 37 and the guide post 347 to perform the test. The electronic switch 4 can only be installed in the material slot 25 when the shape of the material slot 25 is the same as that of the electronic switch 4 and the interface 41 of the electronic switch 4 faces the inflation sealing mechanism 3. Otherwise, the electronic switch 4 cannot be installed in the material slot 25.

[0031] Furthermore, the first limiting unit 343 includes two first limiting grooves 3431 provided on the housing 33 and placed along the moving direction of the slider 345, and four first cam bearing followers 3432 provided on the top or bottom of the slider 345 and partially located in the first limiting grooves 3431; the second limiting unit 342 includes a second limiting groove 3421 provided on the U-shaped frame 341 and placed along the moving direction of the slider 345, and two second cam bearing followers 3422 provided on the side of the slider 345 and located in the second limiting grooves 3421; During operation: since the first limiting groove 3431 and the second limiting groove 3421 are in the shape of long strips, the first cam bearing follower 3432 and the second cam bearing follower 3422 can only slide correspondingly in the first limiting groove 3431 and the second limiting groove 3421, thereby playing a limiting role; the movable range of the slider 345 and the U-shaped frame 341 is determined by the length of the first limiting groove 3431 and the second limiting groove 3421, and the movable range of the slider 345 and the U-shaped frame 341 can be changed by adjusting the length of the first limiting groove 3431 and the second limiting groove 3421.

[0032] Furthermore, the shell 33 and the U-shaped frame 341 are correspondingly provided with a cover plate 31 for covering the first limiting groove 3431 and the second limiting groove 3421, which plays a sealing role, prevents dust, debris, etc. from falling into the inflatable sealing component 34, reduces wear and tear, and increases service life.

[0033] Furthermore, a chamber 24 is provided at one end of the positioning seat 22 away from the inflatable sealing mechanism 3; a barcode scanner 21 for scanning the QR code on the electronic switch 4 is provided in the chamber 24; when working: the QR code on the electronic switch 4 is scanned by the barcode scanner 21, and the information of each electronic switch 4 can be automatically recorded for easy management.

[0034] Furthermore, the positioning seat 22 is provided with an infrared sensor 27 for detecting whether the electronic switch 4 is placed in the material trough 25, which can effectively prevent misoperation.

[0035] Furthermore, the base 1 is provided with a VPC universal quick-change connector 13 and a universal quick-change joint 14, which facilitates quick connection or replacement and improves assembly and maintenance efficiency.

[0036] Furthermore, handles 11 are provided on both sides of the top of the base 1 to facilitate carrying the test fixture.

[0037] Furthermore, the four corners of the base 1 are respectively provided with connection holes 12 to facilitate fixing the test fixture on a workbench.

[0038] The above are only specific application examples of the present invention and do not constitute any limitation on the scope of protection of the present invention. Any technical solutions formed by equivalent transformation or equivalent replacement shall fall within the scope of protection of the present invention.

Claims

1. An electronic switch air tightness test fixture, characterized by: It comprises a base, a positioning mechanism and an inflation sealing mechanism respectively arranged on the base; The positioning mechanism includes a positioning seat provided on the base, a material trough provided on the top of the positioning seat for placing the electronic switch, positioning cylinders provided on both sides of the positioning seat and with driving ends extending into the material trough for fixing the electronic switch, and an opening provided at one end of the positioning seat near the inflatable sealing mechanism and communicating with the material trough; The inflatable sealing mechanism includes a bracket mounted on the base, a housing with one end mounted on the bracket and the other end connected to the opening, an inflatable sealing component mounted in the housing for performing internal expansion sealing and inflating the electronic switch interface, and a translation cylinder mounted on the bracket for driving the inflatable sealing component to move in the direction of the electronic switch. The inflatable sealing assembly includes a U-shaped frame placed horizontally and connected to the driving end of the translation cylinder at its tail end, a slider arranged horizontally in the U-shaped frame, a spring arranged between the inner end of the slider and the tail end of the U-shaped frame, a guide post arranged horizontally at the outer end of the slider, an extrusion block arranged at the head of the U-shaped frame and sleeved on the guide post, an extrusion portion arranged on the extrusion block and sleeved on the guide post, a limiting portion arranged at the head of the guide post and having a diameter larger than that of the guide post, a sealing ring sleeved on the guide post and located between the extrusion portion and the limiting portion, a first limiting unit respectively arranged at the top and bottom of the slider, and a second limiting unit respectively arranged at both sides of the slider; the guide post is a hollow structure, and an inflation port is provided at the head of the guide post; an air pipe interface is provided on the slider; the air pipe interface is communicated with the guide post and is connected to a leakage tester through a hose; The first limiting unit includes at least one first limiting groove provided on the housing and placed along the moving direction of the slider, and at least one first cam bearing follower provided on the top or bottom of the slider and located in the first limiting groove; the second limiting unit includes at least one second limiting groove provided on the U-shaped frame and placed along the moving direction of the slider, and at least one second cam bearing follower provided on the side of the slider and located in the second limiting groove; A chamber is provided at one end of the positioning seat away from the inflatable sealing mechanism; a code scanner for scanning the QR code on the electronic switch is provided in the chamber; The positioning seat is provided with a sensor for detecting whether an electronic switch is placed in the material trough.

2. The electronic switch air tightness test fixture according to claim 1, characterized in that: The shell and the U-shaped frame are correspondingly provided with cover plates for covering the first limiting groove and the second limiting groove.

3. The electronic switch air tightness test fixture according to claim 1 or 2, characterized in that: A universal quick-change connector and a universal quick-change joint are respectively provided on the base.

4. The electronic switch air tightness test fixture according to claim 3, characterized in that: Handles are respectively provided on both sides of the top of the base.

5. The electronic switch air tightness test fixture according to claim 4, characterized in that: The four corners of the base are respectively provided with connection holes.

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