Universal circuit board test fixing clamp and clamp system

Abstract

The utility model discloses a universal circuit board test fixing clamp and a clamp system, and the fixing clamp comprises a main body which is used for bearing a clamping mechanism; and the at least one clamping mechanism comprises a mounting structure which is adjustably mounted on the main body and a clamping structure which is connected to the mounting structure and is used for detachably clamping the circuit board. According to the utility model, the mounting structure which is adjustable in position on the main body is arranged, so that the position of the clamping structure connected to the mounting structure is adjustable, and when the mounting structure is used for circuit boards with different sizes, the clamping structure can be adjusted to a proper clamping position according to the sizes of the circuit boards, so that the universality is improved; the number of the clamping mechanisms can be configured according to use scenes.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board experiment auxiliary equipment, in particular to a universal circuit board test fixing fixture and a fixture system. Background Art

[0002] Circuit boards, especially PCBA circuit boards, need to undergo tests such as vibration, HALT and mechanical shock. When conducting these tests, the circuit boards need to be clamped and fixed with fixtures. Currently, circuit board test fixtures are generally composed of a base and a clamping component fixed on the base. The base is fixed on the test bench of the corresponding test equipment. Although the clamping function of this fixture is reliable, it is not universal. Circuit boards with different structures need to design corresponding fixtures for testing. The number of fixtures will accumulate over time, resulting in a lot of waste. Utility Model Content

[0003] The main purpose of the utility model is to provide a circuit board test fixing fixture and a fixture system with better versatility.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a universal circuit board test fixing fixture, comprising:

[0005] A main body, used for carrying a clamping mechanism;

[0006] The clamping mechanism, at least one in number, comprises a mounting structure which is adjustably mounted on the main body and a clamping structure connected to the mounting structure and used for detachably clamping the circuit board.

[0007] Furthermore, the mounting structure comprises:

[0008] A slider, slidably connected to a slide rail provided on the main body;

[0009] The locking assembly is used to lock the slider on the main body.

[0010] Furthermore, the slide rail is a slide groove opened on the main body, the slider is slidably inserted in the slide groove, and the locking assembly includes a gasket and a locking piece. In the locked state, the locking piece is threadedly connected to the slider through the gasket, and the gasket is pressed against the main body by the locking piece and cooperates with the slide groove to limit the position.

[0011] Furthermore, the cross sections of the slide groove and the slide block are both T-shaped and fit each other in a concave-convex manner.

[0012] Furthermore, the clamping structure is connected to the locking member.

[0013] Further, the clamping structure of at least one of the clamping mechanisms is configured to clamp a plate body of a circuit board, and / or the clamping structure of at least one of the clamping mechanisms is configured to clamp a wiring harness of a circuit board.

[0014] Furthermore, the clamping structure for clamping the plate body of the circuit board includes a first bolt. In the clamping state, the first bolt passes through the mounting hole on the plate body of the circuit board and is threadedly connected to the mounting structure, and the plate body of the circuit board is clamped between the nut of the first bolt and the mounting structure.

[0015] Furthermore, the clamping structure for clamping the wiring harness of the circuit board includes a pressure plate and a second bolt. In the clamping state, the second bolt passes through the pressure plate and is threadedly connected to the mounting structure, and the wiring harness of the circuit board is clamped between the pressure plate and the mounting structure.

[0016] Furthermore, the pressing plate has an arc-shaped plate segment.

[0017] Furthermore, a strip-shaped mounting hole is provided on the main body.

[0018] The utility model also provides a universal circuit board test fixing fixture system, comprising at least the universal circuit board test fixing fixture mentioned above, each of the universal circuit board test fixing fixtures is used to clamp different parts of the circuit board.

[0019] The beneficial effects of the utility model are embodied in:

[0020] The utility model realizes the adjustable position of the clamping structure connected thereto by providing an adjustable mounting structure on the main body. In this way, when used for circuit boards of different sizes, the clamping structure can be adjusted to a suitable clamping position according to the size of the circuit board, thereby improving versatility. The number of clamping mechanisms can be configured according to the usage scenario. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a three-dimensional structural diagram of a universal circuit board test fixing fixture according to an embodiment of the utility model;

[0022] Figure 2 for Figure 1 a side view of the fixture shown;

[0023] Figure 3 for Figure 1 An exploded view of the structure of the fixture shown;

[0024] Figure 4 This is a schematic diagram of the use status of a universal circuit board test fixing fixture system according to an embodiment of the utility model.

[0025] Description of reference numerals:

[0026] 1. Main body; 11. Slide groove; 12. Strip mounting hole;

[0027] 2. Clamping mechanism; 21. Mounting structure; 211. Sliding block; 212. Washer; 213. Locking member; 2131. Stud; 2132. Screw hole; 22. Clamping structure; 221. First bolt; 222. Pressing plate; 223. Second bolt; 2221. Arc plate segment;

[0028] 3. Circuit board. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other and all belong to the scope of protection of the utility model.

[0030] See also Figures 1 to 3 .

[0031] The utility model provides a universal circuit board test fixture, comprising:

[0032] A main body 1, used for carrying a clamping mechanism 2;

[0033] The clamping mechanism 2, at least one in number, comprises a mounting structure 21 which is adjustably mounted on the main body 1 and a clamping structure 22 connected to the mounting structure 21 and used for detachably clamping the circuit board.

[0034] The utility model provides an adjustable mounting structure 21 on the main body, thereby achieving adjustable position of the clamping structure 22 connected thereto. In this way, when used for circuit boards of different sizes, the clamping structure 22 can be adjusted to a suitable clamping position according to the size of the circuit board, thereby improving versatility. The number of clamping mechanisms 2 can be configured according to the usage scenario.

[0035] In one embodiment, a strip-shaped mounting hole 12 is provided on the main body 1. The strip-shaped mounting hole 12 may be a waist-shaped hole. Specifically, the strip-shaped mounting hole 12 is used to fix the main body 1 on the test bench of the corresponding test equipment (using a bolt to pass through the strip-shaped mounting hole 12 and threadedly connect to the threaded hole on the test bench). The existing fixture also has the defect that the mounting hole of the existing fixture is a fixed round hole, while the hole positions of the vibration test bench, the impact test bench and the HALT test bench vary greatly, which will cause the need to design a variety of fixtures to meet the test requirements in order to match different tabletops, and will further increase the test cost. In this application, by designing the mounting hole into a strip shape, the bolt can be at any position of the strip-shaped mounting hole 12, so that the main body can be adjusted to adapt to the test bench of different equipment, and the installation is more flexible. In addition, with such a design, the installation position of the main body 1 can also be adjusted according to circuit boards of different sizes, thereby increasing the position change range of the clamping structure 22 and further improving the versatility.

[0036] In one embodiment, the mounting structure 21 includes: a slider 211 slidably connected to a slide rail provided on the main body 1; and a locking assembly for locking the slider 211 on the main body 1. This design has a simple structure, is easy to adjust the position, and is convenient to install and operate.

[0037] In one embodiment, the slide rail is a slide groove 11 provided in the main body 1, the slider 211 is slidably inserted in the slide groove 11, and the locking assembly includes a gasket 212 and a locking member 213. In the locked state, the locking member 213 passes through the gasket 212 and is threadedly connected to the slider 211. The gasket 212 is pressed against the main body 1 by the locking member 213 and is limitedly matched with the slide groove 11. With such a design, the locking member 213 can be directly connected to the slider 211 on the one hand, and the structure and space utilization are reasonable. On the other hand, the slider 211 can be locked in the slide groove 11 with the cooperation of the gasket 212. When in use, the slider 211 can be locked and released by rotating the locking member 213 in both directions, which makes the operation more convenient. At the same time, the gasket 212 can also protect the main body from being damaged.

[0038] In one embodiment, the cross sections of the slide groove 11 and the slider 211 are both T-shaped and fit each other in a concave-convex manner. In this design, the slider 211 has only the axial degree of freedom of the slide groove 11, which is more stable.

[0039] In a specific implementation, the slide groove 11 passes through the main body 1. This design facilitates installation or removal of the slider 211 as needed, and facilitates increasing or decreasing the number of the sliders 211 according to the usage scenario, which is more convenient and flexible, and further increases applicability.

[0040] In one embodiment, the clamping structure 22 is connected to the locking member 213. With this design, the structure and space utilization are reasonable, and the clamping structure 22 is also easy to operate.

[0041] In one embodiment, the clamping structure 22 of at least one of the clamping mechanisms 2 is configured to clamp the board body of the circuit board 3, and / or, the clamping structure 22 of at least one of the clamping mechanisms 2 is configured to clamp the wiring harness of the circuit board 3. The meaning of "and / or" here includes three parallel schemes, namely: first, the clamping structure 22 of at least one of the clamping mechanisms 2 is configured to clamp the board body of the circuit board 3, second, the clamping structure 22 of at least one of the clamping mechanisms 2 is configured to clamp the wiring harness of the circuit board 3, and third, the clamping structure 22 of at least one of the clamping mechanisms 2 is configured to clamp the board body of the circuit board 3 and at least one of the clamping structures 2 is configured to clamp the wiring harness of the circuit board 3. For example, the figure illustrates such a scheme containing two clamping mechanisms 2, which are used to clamp the board body and the wiring harness of the circuit board 3 respectively. With such a design, it is more flexible and practical to select and equip the matching clamping structure according to the clamping needs of different parts of the circuit board.

[0042] In one embodiment, the clamping structure 22 for clamping the body of the circuit board 3 includes a first bolt 221. In the clamping state, the first bolt 221 passes through the mounting hole on the body of the circuit board 3 and is threadedly connected to the mounting structure 21. The body of the circuit board 3 is clamped between the nut of the first bolt 221 and the mounting structure 21. This design has a simple and reasonable structure, and is convenient for clamping and loosening operations. Moreover, this fixing method matches the actual fixing method, and is closer to the actual use environment during testing.

[0043] In one embodiment, the clamping structure 22 for clamping the wiring harness of the circuit board 3 includes a pressing plate 222 and a second bolt 223. In the clamping state, the second bolt 223 passes through the pressing plate 222 and is threadedly connected to the mounting structure 21, and the wiring harness of the circuit board 3 is clamped between the pressing plate 222 and the mounting structure 21. With this design, the wiring harness of the circuit board 3 can be bound and fixed during the test, avoiding poor contact of the wiring harness due to vibration, avoiding unnecessary failure, and affecting the test process.

[0044] In one embodiment, the pressing plate 222 has an arc-shaped plate segment 2221. With this design, the concave portion of the arc-shaped plate segment 2221 is used to accommodate the wiring harness of the circuit board 3, and the structure is more reasonable and the fixing effect is better.

[0045] In a specific implementation, the bottom of the locking member 213 is an M5 stud 2131 for threaded connection to the slider 211, and the top is an M3 screw hole 2132 for threaded connection to the first bolt 221 or the second bolt 223. The first bolt 221 or the second bolt 223 can be a hexagon socket screw.

[0046] The locking member 213 can be a hexagonal pyramidal prism or a square fixed column. This design facilitates the rotation operation. The locking members 213 of the two clamping structures 22 shown in the figure are these two structures.

[0047] See also Figure 4 The utility model can be used by forming a system with a plurality of the above-mentioned universal circuit board test fixtures, and each universal circuit board test fixture is used to clamp different parts of the circuit board 3. The utility model can meet the installation requirements of different circuit boards and different test platforms.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A universal circuit board test fixture, characterized in that: include: A main body, used for carrying a clamping mechanism; The clamping mechanism, at least one in number, comprises a mounting structure which is adjustably mounted on the main body and a clamping structure connected to the mounting structure and used for detachably clamping the circuit board.

2. The universal circuit board test fixture as claimed in claim 1, characterized in that: The mounting structure comprises: A slider, slidably connected to a slide rail provided on the main body; The locking assembly is used to lock the slider on the main body.

3. The universal circuit board test fixture as claimed in claim 2, characterized in that: The slide rail is a slide groove opened on the main body, the slider is slidably inserted in the slide groove, and the locking assembly includes a gasket and a locking piece. In the locked state, the locking piece passes through the gasket and is threadedly connected to the slider. The gasket is pressed against the main body by the locking piece and cooperates with the slide groove to limit the position.

4. The universal circuit board test fixture as claimed in claim 3, characterized in that: The clamping structure is connected to the locking member.

5. The universal circuit board test fixture according to any one of claims 1 to 4, characterized in that: The clamping structure of at least one of the clamping mechanisms is configured to clamp a board body of a circuit board, and / or the clamping structure of at least one of the clamping mechanisms is configured to clamp a wiring harness of a circuit board.

6. The universal circuit board test fixture as claimed in claim 5, characterized in that: The clamping structure for clamping the plate body of the circuit board includes a first bolt. In the clamping state, the first bolt passes through the mounting hole on the plate body of the circuit board and is threadedly connected to the mounting structure. The plate body of the circuit board is clamped between the nut of the first bolt and the mounting structure.

7. The universal circuit board test fixture as claimed in claim 5, characterized in that: The clamping structure for clamping the wiring harness of the circuit board includes a pressing plate and a second bolt. In the clamping state, the second bolt passes through the pressing plate and is threadedly connected to the mounting structure, and the wiring harness of the circuit board is clamped between the pressing plate and the mounting structure.

8. The universal circuit board test fixture as claimed in claim 7, characterized in that: The pressing plate has an arc-shaped plate section.

9. The universal circuit board test fixture according to any one of claims 1 to 4, characterized in that: The main body is provided with a strip-shaped installation hole.

10. A universal circuit board test fixture system, characterized in that: The invention comprises at least two universal circuit board test fixing fixtures as claimed in any one of claims 1 to 9, each of the universal circuit board test fixing fixtures is used to clamp different parts of a circuit board.

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