Universal fixing jig for plugging wire harness test

Abstract

The utility model relates to the technical field of circuit board testing, and discloses a universal fixing jig for plugging wire harness testing, which comprises a base provided with a first direction X, a second direction Y and a third direction Z which are intersected pairwise; the adjusting plate is assembled on the base in a sliding mode in the first direction X; at least two groups of cross beams are provided, and each cross beam is assembled on the adjusting plate in a sliding manner along the second direction Y; and the positioning pins extend in the third direction, and each cross beam is provided with one positioning pin. When the PCBA board is tested and plugged with a wire harness, an operator can adjust the positions of the adjusting plate and the cross beam on the base so as to adjust the positions of the positioning pins in the first direction and the second direction to match PCBA boards with different specifications and sizes, the positioning pins are plugged into the fabrication holes in the PCBA board along the third direction, the PCBA board does not need to be manually supported in the wire harness plugging process, and the operation is simple and convenient. Manual operation steps are reduced, continuous production is completed in a short time, and the testing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board testing, in particular to a universal fixing fixture for plugging and unplugging wiring harness testing. Background Art

[0002] During the production process of a printed circuit board assembly (PCBA), a wiring harness plug-in test is required. This involves connecting the wiring harness to the gold fingers of the PCBA and then powering it on to check the performance of the electrical components.

[0003] In the existing technology, the PCBA is placed on a platform during testing, and the PCBA wiring harness is manually plugged in and out. Although this method is highly flexible, it has the following disadvantages: 1. During the manual plugging and unplugging process, the PCBA needs to be manually held and fixed, which can easily lead to component damage and poor solder joints. 2. Functional testing requires the PCBA to be placed on a platform and then manually removed after the test is completed. During this process, the PCBA may be scratched against the platform. 3. Due to the lack of unified standards, each person's operating method is different, making unified management impossible. Utility Model Content

[0004] The purpose of the utility model is to provide a universal fixing fixture for plugging and unplugging wiring harnesses to solve the problems in the prior art of easily damaged components and inconsistent standards when manually plugging and unplugging PCBA wiring harnesses.

[0005] In order to achieve the above objectives, the present invention provides a universal fixing fixture for plugging and unplugging wiring harness testing, comprising:

[0006] A base, wherein the base has a first direction, a second direction, and a third direction intersecting in pairs;

[0007] an adjusting plate, the adjusting plate being slidably assembled on the base along a first direction;

[0008] There are at least two groups of crossbeams, and each of the crossbeams is slidably assembled on the adjustment plate along the second direction;

[0009] A positioning pin extends along the third direction, and each of the beams is equipped with the positioning pin.

[0010] Preferably, the crossbeam has an assembly hole extending along the first direction, and the positioning pin is slidably assembled in the assembly hole.

[0011] Preferably, the base is provided with a plurality of fixing holes spaced apart along the first direction, the adjustment plate has a first adjustment hole extending along the first direction, a connecting piece is passed through the first adjustment hole, one end of the connecting piece extends out of the first adjustment hole and is fastened to the fixing hole.

[0012] Preferably, the adjustment plate further has a second adjustment hole extending along the second direction, and the crossbeam includes a fastener, and the fastener is slidably assembled in the second adjustment hole.

[0013] Preferably, the base has a slide, the fixing hole is opened on the slide, the adjustment plate includes a main body plate and a wing plate connected to the main body plate, there are two wing plates, and the two wing plates are respectively arranged at the two ends of the second direction of the main body plate, the first adjustment hole is arranged on the wing plate, the second adjustment hole is arranged on the main body plate, and the wing plate is overlapped on the slide.

[0014] Preferably, the base includes a fixed seat, a turntable, a base, a support column and a frame, the turntable is assembled between the fixed seat and the base, the frame and the base are spaced apart along a third direction, the support column is connected between the base and the frame, and the adjustment plate is slidably assembled on the frame.

[0015] Preferably, it further comprises a circumferential limiting assembly, which is assembled between the fixing seat and the base, and the base has a first working position and a second working position with a rotation angle difference of 180 degrees during the rotation stroke.

[0016] Preferably, the circumferential limit assembly includes a limit groove and a limit pin, the limit groove is opened on the base, the limit groove extends along the circumference of the turntable, the limit pin is fixedly assembled on the fixed seat, the limit pin is inserted into the limit groove, the limit groove is symmetrically provided with two groups of stop structures with the center line of the turntable as the axis, and the stop structure cooperates with the limit pin along the circumferential stop of the turntable.

[0017] Preferably, the central angle of the limiting groove is 180 degrees, and the groove walls at both ends of the limiting groove respectively form the stop structures.

[0018] Preferably, the circumferential limit assembly further includes a magnetic part, and the fixing seat and the side facing the base are both equipped with the magnetic part, and the magnetic part is arranged in two groups at intervals along the circumference of the turntable, and the central angle of the two groups of magnetic parts is 180 degrees.

[0019] Compared with the prior art, the universal fixing jig for testing plug-in and unplugging wire harnesses in the embodiment of the present invention has the following beneficial effects: the adjustment plate can slide on the base along the first direction, and the crossbeam can slide on the adjustment plate along the second direction. When testing the plug-in and unplugging wire harnesses on the PCBA board, the operator can adjust the positions of the adjustment plate and the crossbeam on the base, and then adjust the positions of the locating pins in the first and second directions to match PCBA boards of different specifications and sizes. The operator can support the PCBA board on the locating pins, and the locating pins are inserted into the process holes on the PCBA board along the third direction to fix and position the PCBA board. During the process of plugging and unplugging the wire harnesses, there is no need to manually support the PCBA board, which avoids damage to components on the PCBA board, cold soldering, etc., and also avoids scratches between the PCBA board and the platform. The steps of manual operation are reduced, continuous production can be completed in a short time, and the testing efficiency is improved. At the same time, the use of this jig can realize standardized manual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural diagram of a universal fixing fixture for plugging and unplugging wiring harness testing of the utility model;

[0021] Figure 2 yes Figure 1 A top view of the universal fixture for plug-in / plug-out harness testing;

[0022] Figure 3 yes Figure 2 A magnified schematic diagram of the structure of the universal fixing fixture A for the plug-in and unplug harness test;

[0023] Figure 4 yes Figure 1 The main view of the universal fixture for plug-in and unplug harness testing;

[0024] Figure 5 yes Figure 1 Exploded diagram of the base of the universal fixture for plug-in / unplug harness testing;

[0025] Figure 6 This is a schematic diagram of the structure of the universal fixing fixture for plug-in and pull-out wiring harness testing of the utility model after being assembled with the PCBA board.

[0026] In the figure, 1. base, 11. fixing hole, 12. slide, 13. fixing seat, 14. turntable, 15. base, 16. support column, 17. frame, 2. adjustment plate, 21. first adjustment hole, 22. second adjustment hole, 23. main plate, 24. wing plate, 3. beam, 31. assembly hole, 32. fastener, 4. positioning pin, 5. circumferential limit assembly, 51. limit groove, 52. limit pin, 53. stop structure, 54. magnetic part, 6. PCBA board, X, first direction, Y, second direction, Z, third direction. DETAILED DESCRIPTION

[0027] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0028] A preferred embodiment of a universal fixing fixture for plugging and unplugging wiring harness testing of the present utility model is as follows: Figures 1 to 6 As shown, the universal fixing fixture for the plug-in harness test includes a base 1, an adjustment plate 2, a beam 3 and a positioning pin 4. The base 1 is the supporting foundation of the universal fixing fixture, which is used to support the assembly on the test platform. The adjustment plate 2, the beam 3 and the positioning pin 4 are all supported and arranged on the base 1.

[0029] The base 1 has a first direction X, a second direction Y, and a third direction Z that intersect with each other. In this embodiment, the base 1 is a rectangular structure as a whole. The first direction X is the length direction of the base 1, the second direction Y is the width direction of the base 1, and the third direction Z is the height direction of the base 1. The first direction X, the second direction Y, and the third direction Z are perpendicular to each other.

[0030] The adjustment plate 2 is slidably assembled on the base 1 along the first direction X. There are at least two groups of beams 3, and each beam 3 is slidably assembled on the adjustment plate 2 along the second direction Y. Each beam 3 is equipped with a positioning pin 4, which extends along the third direction Z. That is, the central axis of the positioning pin 4 extends along the third direction Z. The positioning pin 4 is used to be inserted into the positioning hole of the PCBA board 6 along the third direction Z.

[0031] In this embodiment, there are three groups of adjustment plates 2, spaced apart along a first direction X. The three groups of adjustment plates 2 have different dimensions along the first direction X. The center group of adjustment plates 2 has the largest dimension in the first direction X, while the remaining two groups have the same dimensions. Each group of adjustment plates 2 is equipped with two sets of crossbeams 3, spaced apart along a second direction Y. The crossbeams 3 on the center adjustment plate 2 have the largest dimension along the first direction X. Two positioning pins 4 are spaced apart along the first direction X on these largest crossbeams 3, providing stable support for the center of the PCBA board 6 and enhancing the stability of the PCBA board 6 during positioning.

[0032] In this embodiment, the top end of the locating pin 4 has an external thread. After the locating pin 4 is inserted into the locating hole of the PCBA board 6, a nut can be threadedly assembled to fix the PCBA board 6 through the nut to prevent the product from tilting during the manual insertion of the wiring harness and causing the PCBA board 6 to fall off the jig; the number of nuts can be increased or decreased as needed. Preferably, nuts are threadedly assembled on two diagonal locating pins 4 to fix the PCBA board 6, ensuring stability while reducing workload.

[0033] When the adjustment plate 2 slides in the first direction X and the crossbeam 3 slides in the second direction Y, the positioning pins 4 can be simultaneously moved. Adjusting the positions of the positioning pins 4 in the first direction X and the second direction Y allows for positioning of PCBA boards 6 of varying sizes, thus expanding the applicability of this universal fixture. In this embodiment, eight positioning pins 4 are used to support and position the PCBA board 6. In other embodiments, different numbers of positioning pins 4 may be used for different PCBA boards 6.

[0034] The adjustment plate 2 of the universal fixing fixture for the plug-in and pull-out wiring harness test can slide on the base 1 along the first direction, and the crossbeam 3 can slide on the adjustment plate 2 along the second direction. When testing the plug-in and pull-out wiring harness of the PCBA board 6, the operator can adjust the positions of the adjustment plate 2 and the crossbeam 3 on the base 1, and then adjust the positions of the locating pins 4 in the first and second directions to match PCBA boards 6 of different specifications and sizes. The operator can support the PCBA board 6 on the locating pins 4, and the locating pins 4 are inserted into the process holes on the PCBA board 6 along the third direction to fix and position the PCBA board 6. During the process of plugging and unplugging the wiring harness, there is no need to manually support the PCBA board 6, which avoids damage to components on the PCBA board 6, cold soldering, etc., and also avoids the PCBA board 6 from scratching the platform, reducing the steps of manual operation, completing continuous production in a short time, and improving test efficiency. At the same time, using the fixture operation, standardized manual operation can be achieved.

[0035] Preferably, the crossbeam 3 has an assembly hole 31 extending along the first direction X, and the positioning pin 4 is slidably assembled in the assembly hole 31 .

[0036] An assembly hole 31 is provided on the crossbeam 3. The position of the locating pin 4 can be adjusted by moving the locating pin 4 in the assembling hole 31. The locating pin 4 is guided and cooperated with the assembling hole 31. The hole wall of the assembling hole 31 has a guiding function, thereby ensuring the stability of the movement of the locating pin 4 and simplifying the assembly structure of the locating pin 4 and the crossbeam 3.

[0037] Preferably, the base 1 is provided with a plurality of fixing holes 11 spaced apart along the first direction X, the adjustment plate 2 has a first adjustment hole 21 extending along the first direction X, a connecting piece is passed through the first adjustment hole 21, one end of the connecting piece extends out of the first adjustment hole 21 and is fastened to the fixing hole 11.

[0038] The base 1 is provided with a plurality of fixing holes 11 spaced apart along a first direction X. When the adjustment plate 2 moves along the first direction X, the appropriate fixing hole 11 can be selected as needed to mate with the first adjustment hole 21. The first adjustment hole 21 and the fixing hole 11 are fastened together by a connector to position the adjustment plate 2, allowing the adjustment plate 2 to slide along the first direction X to adjust the position of the positioning pin 4. The adjustment plate 2 is further provided with a first adjustment hole 21 extending along the first direction X. The first adjustment hole 21 can simultaneously mate with multiple fixing holes 11, compensating for errors caused by the process and the moving distance, facilitating assembly of the connector, and providing ease of use.

[0039] Preferably, the adjustment plate 2 further has a second adjustment hole 22 extending along the second direction Y, and the crossbeam 3 includes a fastener 32 , which is slidably assembled in the second adjustment hole 22 .

[0040] The second adjustment hole 22 extends along the second direction Y. The second adjustment hole 22 can be guided and assembled with the fastener 32. The fastener 32 fastens the crossbeam 3 and the second adjustment hole 22. The second adjustment hole 22 is a continuous hole, which can realize continuous adjustment of the position of the crossbeam 3.

[0041] Preferably, the base 1 has a slide 12, the fixing hole 11 is opened on the slide 12, the adjustment plate 2 includes a main plate 23 and a wing plate 24 connected to the main plate 23, there are two wing plates 24, the two wing plates 24 are respectively arranged at the two ends of the second direction Y of the main plate 23, the first adjustment hole 21 is arranged on the wing plate 24, the second adjustment hole 22 is arranged on the main plate 23, and the wing plate 24 is overlapped on the slide 12.

[0042] The adjustment plate 2 is overlapped on the slide 12 of the base 1 through the wing plates 24 at both ends of the second direction Y, which simplifies the assembly form between the adjustment plate 2 and the base 1. The wing plates 24 can be guided and assembled with the slide 12, and the slide 12 can also support the adjustment plate 2 through the wing plates 24, which is easy to use.

[0043] Preferably, the base 1 includes a fixed seat 13, a turntable 14, a base 15, a support column 16 and a frame 17. The turntable 14 is assembled between the fixed seat 13 and the base 15. The frame 17 and the base 15 are spaced apart along the third direction Z. The support column 16 is connected between the base 15 and the frame 17. The adjustment plate 2 is slidably assembled on the frame 17.

[0044] The fixing base 13 secures the entire universal fixture, preventing tilting and shaking during testing. In this embodiment, the fixing base 13 is made of aluminum alloy. The base 15 serves as a link between the upper and lower parts. Its lower end is assembled with the turntable 14, and its upper end is assembled with support columns 16. These columns support the frame 17, which is mounted on these columns. This facilitates swapping frame 17 models when testing different PCBA boards 6. The frame 17 supports and assembles the adjustment plate 2, providing threaded fastening for the adjustment plate 2.

[0045] A turntable 14 is mounted between the mounting base 13 and the base 15, allowing the base 15 to rotate on the mounting base 13, driving the support column 16 and frame 17 to rotate synchronously. Because the PCBA 6 has connectors on both sides, the test harness needs to be plugged in and unplugged from both sides of the PCBA 6. This makes it inconvenient to pull the test harness from one side to the other. The base 15 can rotate on the mounting base 13, allowing the PCBA 6 to rotate 180 degrees, allowing the test harness to be plugged in and unplugged from one side, making testing more convenient.

[0046] Preferably, a circumferential limiting assembly 5 is further included. The circumferential limiting assembly 5 is assembled between the fixing seat 13 and the base 15. The base 15 has a first working position and a second working position with a rotation angle difference of 180 degrees in the rotation stroke.

[0047] The circumferential limit assembly 5 can limit the rotation stroke of the base 15 on the fixed seat 13. The rotation angle of the base 15 when it rotates to the first working position and the second working position differs by 180 degrees. The circumferential limit assembly 5 can limit the rotation stroke of the base 15, so that the base 15 matches the first working position and the second working position when it rotates to the corresponding position.

[0048] Preferably, the circumferential limit assembly 5 includes a limit groove 51 and a limit pin 52. The limit groove 51 is opened on the base 15. The limit groove 51 extends along the circumference of the turntable 14. The limit pin 52 is fixedly assembled on the fixed seat 13. The limit pin 52 is inserted into the limit groove 51. The limit groove 51 is symmetrically provided with two sets of stop structures 53 with the center line of the turntable 14 as the axis. The stop structure 53 cooperates with the limit pin 52 along the circumferential stop of the turntable 14.

[0049] The circumferential limit assembly 5 comprises a limit pin 52, a limit slot 51, and a stop structure 53. The limit pin 52 is inserted into the limit slot 51, which guides the limit pin 52, thereby increasing the stability of the base 15 during rotation. The stop structure 53 and the stop of the limit pin 52 cooperate to limit the rotational travel of the base 15, thus simplifying the limiting method.

[0050] Preferably, the central angle of the limiting groove 51 is 180 degrees, and the groove walls at both ends of the limiting groove 51 respectively form stop structures 53.

[0051] The central angle of the limiting groove 51 is 180 degrees, limiting the maximum rotation angle of the base 15 to 180 degrees. When the base 15 is rotated to the extreme position, it matches the first and second working positions, facilitating wiring harness plugging and unplugging testing. The groove wall of the limiting groove 51 forms the stop structure 53, simplifying the form of the stop structure 53. In other embodiments, the stop structure 53 can also be a spring pin disposed within the limiting groove 51. The spring pins are arranged in multiple groups at intervals along the circumference of the limiting groove 51. The limiting pin 52 stops rotating when it rotates between two groups of spring pins, thereby limiting the position of the limiting pin 52.

[0052] Preferably, the circumferential limiting assembly 5 further includes a magnetic member 54 , and the fixing seat 13 and the base 15 are both equipped with magnetic members 54 on the opposite sides thereof. Two groups of magnetic members 54 are arranged at intervals along the circumference of the turntable 14 , and the central angle of the two groups of magnetic members 54 is 180 degrees.

[0053] Magnetic parts 54 are installed on the opposite sides of the fixed seat 13 and the base 15. When the base 15 and the magnetic parts 54 on the fixed seat 13 are coaxial along the third direction Z, the magnetic parts 54 are attracted to each other due to magnetism. When the operator feels the magnetic force, he can determine that the base 15 has rotated to the first working position or the second working position. At the same time, the magnetic force can prevent the base 15 from rotating back on the turntable 14, so that the position of the base 15 is stable.

[0054] In summary, the embodiment of the present invention provides a universal fixing fixture for testing plug-in and unplugging wire harnesses, wherein the adjustment plate can slide along the first direction on the base, and the crossbeam can slide along the second direction on the adjustment plate. When testing the plug-in and unplugging wire harnesses on the PCBA board, the operator can adjust the positions of the adjustment plate and the crossbeam on the base, and then adjust the positions of the locating pins in the first and second directions to match PCBA boards of different specifications and sizes. The operator can support the PCBA board on the locating pins, and the locating pins are inserted into the process holes on the PCBA board along the third direction to fix and position the PCBA board. During the process of plugging and unplugging the wire harnesses, there is no need to manually support the PCBA board, which avoids damage to components on the PCBA board, cold soldering, and the like, and also avoids scratches between the PCBA board and the platform. The steps of manual operation are reduced, and continuous production can be completed in a short time, thereby improving testing efficiency. At the same time, the use of this fixture can realize standardized manual operation.

[0055] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and replacements can be made without departing from the technical principles of the present invention. These improvements and replacements should also be regarded as the scope of protection of the present invention.

Claims

1. A universal fixture for plug-in / plug-out harness testing, characterized in that: include: A base (1), wherein the base (1) has a first direction (X), a second direction (Y), and a third direction (Z) intersecting in pairs; an adjustment plate (2), the adjustment plate (2) being slidably assembled on the base (1) along a first direction (X); Crossbeams (3), there are at least two groups of crossbeams (3), and each crossbeam (3) is slidably assembled on the adjustment plate (2) along the second direction (Y); A positioning pin (4), the positioning pin (4) extending along a third direction, and each of the crossbeams (3) is equipped with the positioning pin (4).

2. The universal fixture for plug-in / plug-out harness testing according to claim 1, characterized in that: The crossbeam (3) has an assembly hole (31) extending along a first direction (X), and the positioning pin (4) is slidably assembled in the assembly hole (31).

3. The universal fixture for plug-in / plug-out harness testing according to claim 1 or 2, characterized in that: The base (1) is provided with a plurality of fixing holes (11) spaced apart along a first direction (X); the adjustment plate (2) has a first adjustment hole (21) extending along the first direction (X); a connecting piece is passed through the first adjustment hole (21); one end of the connecting piece extends out of the first adjustment hole (21) and is fastened to the fixing hole (11).

4. The universal fixture for plug-in / plug-out harness testing according to claim 3, characterized in that: The adjustment plate (2) further comprises a second adjustment hole (22) extending along a second direction (Y), and the crossbeam (3) comprises a fastener (32) which is slidably assembled in the second adjustment hole (22).

5. The universal fixture for plug-in / plug-out harness testing according to claim 4, characterized in that: The base (1) has a slide (12), the fixing hole (11) is opened on the slide (12), the adjustment plate (2) includes a main plate (23) and a wing plate (24) connected to the main plate (23), there are two wing plates (24), the two wing plates (24) are respectively arranged at the two ends of the second direction (Y) of the main plate (23), the first adjustment hole (21) is arranged on the wing plate (24), the second adjustment hole (22) is arranged on the main plate (23), and the wing plate (24) is overlapped on the slide (12).

6. The universal fixture for plug-in / plug-out harness testing according to claim 1 or 2, characterized in that: The base (1) comprises a fixed seat (13), a turntable (14), a base (15), a support column (16) and a frame (17); the turntable (14) is assembled between the fixed seat (13) and the base (15); the frame (17) and the base (15) are spaced apart along a third direction (Z); the support column (16) is connected between the base (15) and the frame (17); and the adjustment plate (2) is slidably assembled on the frame (17).

7. The universal fixture for plug-in / plug-out harness testing according to claim 6, characterized in that: It also includes a circumferential limiting assembly (5), which is assembled between the fixing seat (13) and the base (15). The base (15) has a first working position and a second working position with a rotation angle difference of 180 degrees during the rotation stroke.

8. The universal fixture for plug-in / plug-out harness testing according to claim 7, characterized in that: The circumferential limiting assembly (5) includes a limiting groove (51) and a limiting pin (52), wherein the limiting groove (51) is provided on the base (15), and the limiting groove (51) extends along the circumference of the turntable (14), and the limiting pin (52) is fixedly assembled on the fixing seat (13), and the limiting pin (52) is inserted into the limiting groove (51), and the limiting groove (51) is symmetrically provided with two groups of stop structures (53) with the center line of the turntable (14) as the axis, and the stop structures (53) cooperate with the limiting pin (52) along the circumferential stop of the turntable (14).

9. The universal fixture for plug-in / plug-out harness testing according to claim 8, characterized in that: The center angle of the limiting groove (51) is 180 degrees, and the groove walls at both ends of the limiting groove (51) respectively form the stop structures (53).

10. The universal fixture for plug-in / plug-out harness testing according to claim 8, characterized in that: The circumferential limiting assembly (5) further includes a magnetic member (54), and the magnetic member (54) is assembled on the opposite sides of the fixing seat (13) and the base (15), and two groups of the magnetic members (54) are arranged at intervals along the circumference of the turntable (14), and the central angle of the two groups of the magnetic members (54) is 180 degrees.

Images