Circuit board test fixture

Abstract

The utility model provides a circuit board testing jig, which belongs to the technical field of circuit board testing and comprises a base and a clamping adjusting structure, and clamping groove structures for supporting a circuit board are symmetrically arranged on the left side and the right side of the base; the clamping adjusting structure is arranged on the base and located on the outer side of one clamping groove structure, and the clamping adjusting structure is provided with a clamping rod abutting against the circuit board. According to the circuit board test fixture provided by the utility model, the installation operation of the circuit board can be simple and convenient through the clamping groove structure, and the clamping groove structure also has a limiting effect on the circuit board; the circuit board with size deviation is clamped through the clamping adjusting structure, so that the compatibility of the jig is improved, the reliability of test positions of the circuit boards with different size differences is ensured, and the accuracy of test data can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of circuit board testing, and in particular relates to a circuit board testing fixture. Background Art

[0002] Circuit board testing and electronic product testing are an indispensable part. After the production of circuit boards and electronic products is completed, they need to be placed on test fixtures for testing to confirm the performance of circuit boards and electronic products. At present, the circuit board fixing method of the test fixtures used for circuit boards and electronic products is relatively cumbersome, the compatibility of the test fixtures is poor, and circuit boards with different sizes from different batches cannot be reliably clamped, which affects the test performance of the circuit board. Utility Model Content

[0003] The embodiment of the utility model provides a circuit board test fixture, which aims to solve the problems of complex circuit board fixing methods and poor compatibility.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a circuit board test fixture, comprising:

[0005] A base, wherein the left and right sides of the base are symmetrically provided with a slot structure for supporting the circuit board; and

[0006] The clamping adjustment structure is arranged on the base and is located outside the slot structure. The clamping adjustment structure has a clamping rod that presses against the circuit board.

[0007] In one achievable manner, the slot structure includes a bottom plate disposed on the base and a clamping plate disposed on the bottom plate, the clamping plate has a bending plate, and a slot for clamping the circuit board is formed between the bending plate and the bottom plate.

[0008] In one achievable manner, the bottom plate has a support plate extending upward, the clamping plate is located on the outer side of the support plate, and the slot is formed between the bending plate and the support plate.

[0009] In one feasible manner, the clamping adjustment structure includes a clamping rod and a spring sleeved on the clamping rod, a support is provided on the base, the clamping rod is screwed on the support, and the clamping rod is also connected to the clamping plate; the spring is located between the support and the clamping plate.

[0010] In one practicable manner, a rear baffle plate for preventing the circuit board from shifting backward is disposed at the rear end of the base.

[0011] In one practicable manner, a notch is provided on the rear baffle plate to match the positioning protrusion extending from the circuit board.

[0012] In one achievable manner, a support seat for supporting the circuit board is further disposed on the base, and the support seat is located between the two slot structures.

[0013] In one achievable manner, a front locking structure for preventing the circuit board from shifting forward is further provided at the front end of the base, and the front locking structure includes a front baffle and a rotating bolt, and the rotating bolt fastens the front baffle to the base.

[0014] In one achievable manner, an upper stopper extending upward from the circuit board is disposed on the front stopper, and the upper stopper constitutes an upper limit position of the circuit board.

[0015] In one practicable manner, a heat sink is further provided above the base.

[0016] Compared with the prior art, the circuit board test fixture provided by the utility model has the following beneficial effects: by setting a clamping adjustment structure against the circuit board on one side of the base, when circuit boards with different size differences from different batches are inserted into the fixture along the card slot structure, the circuit board can be clamped by the clamping adjustment structure on the side, preventing the circuit board from being simply placed on the fixture during the automatic operation of the test equipment and causing displacement. Therefore, the fixture provided by the present application can realize simple and convenient installation of the circuit board through the card slot structure, and the card slot structure also has a limiting effect on the circuit board; the circuit board with size deviation is clamped by the clamping adjustment structure, which improves the compatibility of the fixture, ensures the reliability of the test position of circuit boards with different size differences, and can improve the accuracy of the test data. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of a three-dimensional structure of a circuit board test fixture provided by an embodiment of the utility model and equipped with a circuit board Figure 1 ;

[0018] Figure 2 A schematic diagram of a three-dimensional structure of a circuit board test fixture provided by an embodiment of the utility model and equipped with a circuit board Figure 2 ;

[0019] Figure 3 A schematic diagram of a three-dimensional structure of a circuit board test fixture provided by an embodiment of the utility model and equipped with a circuit board Figure 3 ;

[0020] Figure 4 A schematic diagram of a three-dimensional structure of a circuit board test fixture provided by an embodiment of the utility model and equipped with a circuit board Figure 4 ;

[0021] Figure 5A schematic diagram of the three-dimensional structure of a circuit board test fixture provided by an embodiment of the utility model;

[0022] Figure 6 A schematic diagram of the three-dimensional structure of a heat dissipation plate provided in an embodiment of the utility model;

[0023] Description of reference numerals:

[0024] 1. Heat sink; 11. Support column; 2. Slot structure; 21. Arc-shaped guide surface; 22. Bottom plate; 221. Support plate; 23. Pressing plate; 231. Bending plate; 24. Slot; 3. Front locking structure; 31. Rotating bolt; 32. Front baffle; 33. Upper block; 4. Circuit board; 41. Positioning convex plate; 5. Handle; 6. Base; 7. Support; 8. Clamping adjustment structure; 81. Clamping rod; 82. Spring; 9. Rear baffle; 91. Notch; 10. Support seat. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] In the description of the present invention, it should be noted that if there are terms such as "front", "rear", "left", "right" and so on indicating directions or positional relationships, they are based on the attached Figure 1 and Figure 3 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] Please also read Figures 1 to 5 Now, the circuit board test fixture provided by the utility model is described. The circuit board test fixture comprises a base 6 and a clamping adjustment structure 8. The base 6 is symmetrically provided with a slot structure 2 for supporting the circuit board 4 on both sides thereof. The clamping adjustment structure 8 is provided on the base 6 and is located outside a slot structure 2. The clamping adjustment structure 8 has a clamping rod for pressing against the circuit board 4.

[0028] The circuit board 4 test fixture provided by the utility model has a clamping adjustment structure 8 on one side of the base 6 that is pressed against the circuit board 4. When the circuit boards 4 of different batches with different sizes are inserted into the fixture along the card slot structure 2, the circuit boards 4 can be clamped by the clamping adjustment structure 8 on the side to prevent the circuit boards 4 from being simply placed on the fixture during the automatic operation of the test equipment and causing displacement. Therefore, the fixture provided by the present application can realize the simple and convenient installation operation of the circuit board 4 through the card slot structure 2, and the card slot structure 2 also has a limiting function on the circuit board 4; the circuit board 4 with size deviation is clamped by the clamping adjustment structure 8, which improves the compatibility of the fixture, ensures the reliability of the test position of the circuit boards 4 with different size differences, and can improve the accuracy of the test data.

[0029] By utilizing the test fixture provided by the utility model, not only the circuit board can be tested, but also the electronic product can be tested by plugging it into the circuit board, thus also utilizing the plugging and testing of the electronic product.

[0030] In some embodiments, Figures 1 to 5 As shown, the slot structure 2 includes a bottom plate 22 arranged on the base 6 and a clamping plate 23 arranged on the bottom plate 22, the clamping plate 23 has a bending plate 231, and a slot 24 for clamping the circuit board 4 is formed between the bending plate 231 and the bottom plate 22. Among them, the bending plate 231 extends above the circuit board 4 to form an upper limit structure of the circuit board 4. During testing, the circuit board 4 can be inserted from the front end of the slot 24, and the installation operation is simple and convenient; at the same time, the distance between the two slots 24 is large, and the circuit board 4 and the slot 24 are clearance-matched to avoid the jamming of the circuit board 4 when it is inserted and the friction with the slot 24; and the circuit board 4 can be clamped in the left and right directions using the clamping adjustment structure 8 to ensure that the circuit board 4 will not be displaced relative to the fixture.

[0031] It should be noted that the slot structure 2 can be a split structure or an integrated structure. Figure 1 The card slot structure 2 on the left side is an integrated structure, and an arc-shaped introduction surface 21 is provided at the front end of the card slot 24 so that the front end of the card slot 24 forms an expansion opening to facilitate the insertion of the circuit board 4.

[0032] Optionally, Figure 1The slot structure 2 on the middle right side is a split structure, and the bottom plate 22 and the clamping plate 23 can be processed separately. When the fixture is assembled, the bottom plate 22 can be fixed to the base 6 by bolts, and then the clamping plate 23 can be fixed to the base 6 or the bottom plate 22. The clamping plate 23 can also be directly connected to the clamping rod, and the position is adjusted as the clamping rod moves left and right, and it directly presses against the side of the circuit board 4, so that the clamping adjustment structure 8 can contact the circuit board 4 over a large area, thereby improving the firmness and stability of the clamping of the circuit board 4, and avoiding the problem of deformation of the circuit board 4 caused by a small area of ​​contact with the circuit board 4.

[0033] The bending plate 231 on the pressing plate 23 and the pressing plate 23 are formed by bending a steel plate in one piece, or are formed by processing the steel plate in one piece.

[0034] In some embodiments, Figures 1 to 5 As shown, the bottom plate 22 has a support plate 221 extending upward, the clamping plate 23 is located on the outer side of the support plate 221, and a slot 24 is formed between the bending plate 231 and the support plate 221. The bottom plate 22 forms a step structure, and the outer side of the support plate 221 on the bottom plate 22 forms a step surface, and the clamping plate 23 can be set on the step surface. Since the clamping plate 23 can be fixed on the bottom plate 22, it can also move with the clamping rod. At this time, the step surface constitutes a guide structure for the clamping plate 23, and the clamping plate 23 can first move left and right along the step surface driven by the clamping rod. The support plate 221 on the bottom plate 22 forms a stable and reliable support for the circuit board 4.

[0035] It is noted that the base 6 and the support plate 221 can be an integrally processed structure, or they can be separately processed and then assembled together; similarly, the bending plate 231 and the pressing plate 23 can be an integrally bent structure, or they can be separately processed and then assembled together.

[0036] In some embodiments, Figures 1 to 5 As shown, the clamping adjustment structure 8 includes a clamping rod 81 and a spring 82 sleeved on the clamping rod. A support 7 is provided on the base 6. The clamping rod 81 is screwed on the support 7. The clamping rod 81 is also connected to the clamping plate 23. The spring 82 is located between the support 7 and the clamping plate 23. When it is necessary to adjust according to the size of the circuit board 4 and make the circuit board 4 clamped, the clamping rod 81 is rotated to drive the clamping plate 23 connected to the clamping rod 81 close to the circuit board 4 to clamp the circuit board 4; or when the circuit board 4 is too large to be inserted between the two slots 24, the clamping plate 23 can be driven away from the circuit board 4 by the clamping rod 81 to increase the distance between the two slots 24. When the circuit board 4 is inserted between the two slots 24, the clamping rod 81 is fine-tuned to make the clamping plate 23 press against the circuit board 4, thereby preventing the circuit board 4 from loosening.

[0037] The spring 82 is provided so that the clamping plate 23 has a certain elastic buffering effect on the clamping of the circuit board 4, so that the clamping of the circuit board 4 has a certain self-adjustment, thereby preventing the risk of damaging the circuit board 4 by hard pressing on the circuit board 4.

[0038] In some embodiments, Figures 1 to 5 As shown, the rear end of the base 6 is provided with a rear baffle 9 for preventing the circuit board 4 from shifting backward. The rear baffle 9 on the fixture can prevent the circuit board 4 from slipping out from the rear of the slot 24; similarly, the front baffle 32 can prevent the circuit board 4 from slipping out from the front of the slot 24.

[0039] By limiting the front and back, left and right sides of the circuit board 4 and adjusting the clamping, the compatibility of the fixture with circuit boards 4 of different sizes can be improved, and the circuit board 4 can be reliably limited in six directions from front, back, left, right, up and down. When the fixture is installed on the test platform and moves with the test platform, the position of the circuit board 4 and the fixture can be guaranteed to be reliable and stable, thereby improving the accuracy of the test results.

[0040] In some embodiments, Figures 1 to 5 As shown, the rear baffle plate 9 is provided with a notch 91 that matches the positioning convex plate 41 extending from the circuit board 4. The cooperation between the notch 91 on the rear baffle plate 9 and the positioning convex plate 41 on the circuit board 4 has a preliminary positioning effect on the placement position of the circuit board 4.

[0041] In some embodiments, Figure 5 As shown, a support seat 10 for supporting the circuit board 4 is also provided on the base 6, and the support seat 10 is located in the middle of the two card slot structures 2. The circuit board 4 is supported by the bottom plates 22 at the left and right ends, but lacks support in the middle. If a heat sink 1 is provided on the circuit board 4, the circuit board 4 will tend to deform downward under its own weight, which is not conducive to the later use of the circuit board 4. A support seat 10 is provided in the middle of the jig to support the left, middle and right positions of the circuit board 4 to avoid the risk of bending and deformation of the circuit board 4. Among them, the support block is fastened to the base 6 by bolts.

[0042] In some embodiments, Figures 1 to 5As shown, the front end of the base 6 is also provided with a front locking structure 3 for preventing the circuit board 4 from shifting forward, and the front locking structure 3 includes a front baffle 32 and a rotating bolt 31, and the rotating bolt 31 fastens the front baffle 32 to the base 6. The rear baffle 9 can be directly fixed to the rear side of the base 6 by bolts, and the circuit board 4 needs to be inserted into the card slot 24 from the front end of the base 6. Therefore, the front baffle 32 can be rotated downward to expose the card slot 24 for easy insertion of the circuit board 4. When the circuit board 4 is inserted until its rear end abuts against the rear baffle 9, the front baffle 32 can be rotated upward so that the front baffle 32 blocks the front end of the circuit board 4; and the rotating bolt 31 can be tightened to prevent the front baffle 32 from loosening; when the front baffle 32 needs to be rotated, the rotating bolt 31 can be rotated outward to leave a rotation gap for the front baffle 32 between the base 6 and the front baffle 32.

[0043] In some embodiments, Figures 1 to 5 As shown, the front baffle 32 is provided with an upper stopper 33 extending upward from the circuit board 4, and the upper stopper 33 constitutes the upper limit of the circuit board 4. Through the upper stopper 33 on the front baffle 32, the front locking structure 3 has two directions of limiting the circuit board 4, namely, the front limit and the upper limit, which further improves the position stability of the circuit board 4 after being installed on the fixture, and improves the data accuracy of the circuit board 4 detection. Optionally, the upper stopper 33 and the front baffle 32 are an integral structure, or they can be separately processed and then assembled together.

[0044] In some embodiments, Figures 1 to 3 , Figure 6 As shown, a heat sink 1 is further disposed above the base 6. A support column 11 is disposed below the heat sink 1, and a heat dissipation gap is formed between the circuit board 4 and the heat sink 1 through the support of the support column 11.

[0045] When the circuit board 4 is completed and needs to be tested and plugged in, the circuit board 4 can be placed in the fixture along the card slot 24. The design of the spring 82-type clamping adjustment structure 8 can be compatible with circuit boards 4 with a width difference of 2mm in the left and right directions. The bottom clamping design can ensure that each circuit board 4 can be clamped after placement and will not shake left and right; there is a support block in the center of the base 6 to ensure that the circuit board 4 will not be deformed during the force application process; a front baffle 32 is added to the front end of the base 6 to prevent the circuit board 4 from being displaced during the automatic operation of the equipment.

[0046] The front end of the circuit board 4 is inserted into the handle 5 , and when the circuit board 4 is pushed into the fixture, the circuit board 4 can be pushed in by holding the handle 5 , without touching the circuit board 4 with hands, thereby avoiding contamination of the circuit board 4 .

[0047] The fixture provided by the utility model has good compatibility, and circuit boards 4 with different sizes from different batches can be stably fixed and assembled on detection equipment or production equipment, which is conducive to automatic plug-in and automatic testing of the circuit boards 4.

[0048] To explain, plug-in on a circuit board means that after the circuit of the circuit board 4 is completed, not only the circuit board needs to be tested, but also electronic products such as capacitors, inductors, resistors, etc. need to be plugged into the circuit board 4, and the electronic products need to be tested. By using this fixture, the circuit board 4 can be reliably fixed, and the circuit board 4 will not move left and right, up and down, and forward and backward, thus facilitating the plug-in and testing of electronic products.

[0049] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0050] 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 and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A circuit board test fixture, characterized in that: include: A base (6), wherein left and right sides of the base (6) are symmetrically provided with slot structures (2) for supporting the circuit board (4); as well as The clamping adjustment structure (8) is arranged on the base (6) and is located outside the slot structure (2). The clamping adjustment structure (8) has a clamping rod (81) that presses against the circuit board (4).

2. The circuit board (4) test fixture as claimed in claim 1, characterized in that: The card slot structure (2) comprises a bottom plate (22) arranged on the base (6) and a clamping plate (23) arranged on the bottom plate (22); the clamping plate (23) has a bending plate (231); a card slot (24) for clamping the circuit board (4) is formed between the bending plate (231) and the bottom plate (22).

3. The circuit board (4) test fixture as claimed in claim 2, characterized in that: The bottom plate (22) is provided with a support plate (221) extending upwards, the pressing plate (23) is located outside the support plate (221), and the clamping groove (24) is formed between the bending plate (231) and the support plate (221).

4. The circuit board (4) test fixture as claimed in claim 2, characterized in that: The clamping adjustment structure (8) comprises the clamping rod (81) and a spring (82) sleeved on the clamping rod (81); a support (7) is provided on the base (6); the clamping rod (81) is screwed on the support (7); the clamping rod (81) is also connected to the clamping plate (23); the spring (82) is located between the support (7) and the clamping plate (23).

5. The circuit board (4) testing fixture as claimed in claim 1, characterized in that: A rear baffle plate (9) is provided at the rear end of the base (6) for preventing the circuit board (4) from shifting backwards.

6. The circuit board (4) testing fixture as claimed in claim 5, characterized in that: The rear baffle (9) is provided with a notch (91) that matches the positioning convex plate (41) extending from the circuit board (4).

7. The circuit board (4) testing fixture as claimed in claim 1, characterized in that: The base (6) is also provided with a support seat (10) for supporting the circuit board (4); the support seat (10) is located in the middle of the two card slot structures (2).

8. The circuit board (4) testing fixture as claimed in claim 1, characterized in that: The front end of the base (6) is also provided with a front locking structure (3) for preventing the circuit board (4) from shifting forward, the front locking structure (3) comprising a front baffle plate (32) and a rotating bolt (31), the rotating bolt (31) fastening the front baffle plate (32) to the base (6).

9. The circuit board (4) testing fixture as claimed in claim 8, characterized in that: An upper stopper (33) extending upward from the circuit board (4) is provided on the front stopper (32), and the upper stopper (33) constitutes the upper limit of the circuit board (4).

10. The circuit board (4) testing fixture as claimed in claim 1, characterized in that: A heat dissipation plate (1) is also provided above the base (6).

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