CN219625558U - Clamp for testing printed circuit board - Google Patents

Abstract

The utility model relates to a clamp for testing a printed circuit board, which comprises a fixed table, wherein a fixed frame is arranged at the top of the fixed table in a sliding manner, a sliding groove is formed in the top of the fixed table, a sliding block is fixedly arranged at the bottom of the fixed frame and corresponds to the sliding groove, clamping strips are arranged at the top of an inner cavity of the fixed frame, fixed plates are fixedly arranged on two sides of the top of the fixed table, first pneumatic telescopic rods are symmetrically and fixedly arranged on the fixed plates, test boards are fixedly arranged at the movable ends of the first pneumatic telescopic rods, test probes are uniformly arranged on the test boards, and when the clamp is used, the circuit boards are directly and vertically inserted into the fixed frame, so that the circuit boards are conveniently and subsequently tested through the test boards, when different circuit boards are replaced for testing, the positions of the clamping strips can be adjusted, and then the positions of the test probes on the test boards are adjusted, so that the test of different circuit boards can be tested, and the practicability of the test is improved.

Description

Clamp for testing printed circuit board

Technical Field

The utility model relates to a clamp for testing a printed circuit board, and belongs to the technical field of circuit board testing.

Background

When a circuit board is tested, the circuit board is required to be clamped and limited by using a tooling fixture, the utility model of patent number 202222174850.6 provides a printed circuit board testing fixture, which comprises a PCB testing fixture workbench, wherein a support frame is fixedly arranged at the edge of one side of the upper surface of the PCB testing fixture workbench, an electric telescopic rod is arranged at the lower end of the support frame, a test thimble assembly is arranged at the output end of the electric telescopic rod in a threaded manner, and a switching device is arranged above the PCB testing fixture workbench and comprises a cross, an assembly block, a rotating shaft, a fixing seat, a PCB placing seat and an anti-rotation device; through the switching device, the PCB placing seats with different specifications on the cross can be freely switched to be suitable for positioning and placing of the PCB with different specifications, the aim of testing the PCB with different specifications by a single testing fixture is fulfilled, and through the PCB placing seats, the limiting clamping columns and the assembling blocks, the PCB placing seats are flexibly assembled through the limiting clamping holes of the limiting clamping columns and the limiting clamping holes of the assembling blocks, and the PCB placing seats with more specifications are suitable for being replaced; however, the existing circuit board is to weld the electric element on the circuit board, and the element on the surface of the circuit board needs to be tested during the test, and meanwhile, the welding point on the back of the circuit board needs to be tested, so that the situation of poor welding is prevented.

Disclosure of Invention

The utility model provides a clamp for testing a printed circuit board, aiming at the problems in the related art, so as to overcome the technical problems in the prior art.

For this purpose, the utility model adopts the following specific technical scheme:

the utility model provides a fixture for printed circuit board test, includes the fixed station, the fixed station top slides and is equipped with the mount, the sliding tray has been seted up at the fixed station top, the fixed block that is equipped with of fixed frame bottom and the corresponding position fixing of sliding tray, the fixed station top inner chamber top is equipped with the holding strip, the fixed plate that is equipped with in fixed station top both sides, symmetrical fixed mounting has first pneumatic telescopic link on the fixed plate, first pneumatic telescopic link removes the fixed test board that is equipped with of end, evenly be equipped with test probe on the test board.

Preferably, the inner cavity of the sliding groove is rotationally provided with a screw rod, one end of the screw rod is connected with a stepping motor, and the sliding block is sleeved on the outer side of the screw rod.

Preferably, the top of the fixing frame is penetrated with a threaded rod, the bottom end of the threaded rod is connected with a movable plate, the clamping strip is connected with the movable plate through a clamping spring, and two ends of the movable plate are in sliding connection with the top plate of the fixing frame through guide rods.

Preferably, the bottom of the inner cavity of the fixing frame is fixedly provided with a fixing strip, the fixing strip corresponds to the clamping strip in position, grooves are formed in the fixing strip and the clamping strip, and the cross section of each groove is V-shaped.

Preferably, the slot is formed in the front side of the fixing frame, a second pneumatic telescopic rod is fixedly mounted on the rear side of the fixing frame, and a pushing block is fixedly connected to the moving end of the second pneumatic telescopic rod.

Preferably, the test board is evenly provided with mounting grooves, the mounting grooves are slidably provided with moving blocks, the test probes are fixedly arranged on the moving blocks, and the moving blocks are fixedly provided with adjusting rods.

The beneficial effects of the utility model are as follows:

1. through setting up the mount, when using, can be directly with the circuit board vertical insert in the mount to the convenience is tested circuit board both sides, and the mount also can be moved on the fixed station simultaneously, thereby is applicable to the circuit board of different specification size and tests, improves its practicality;

2. by arranging the clamping strips, the upper end and the lower end of the clamping strips are contacted with the clamping strips when the circuit board is inserted, so that the circuit board is clamped in the fixing frame, and the subsequent test is convenient;

3. through setting up the test board, after the circuit board is pressed from both sides admittedly, let the test board relative movement through first pneumatic telescopic link to make test probe and test point contact on the circuit board, can be simultaneously according to the test point on the different circuit boards, adjust the position of test probe on the test board, thereby satisfy the test to different circuit boards, further improve the practicality of test.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the description serve to explain the utility model.

FIG. 1 is a schematic view of the overall structure of a fixture for testing a printed circuit board according to the present utility model;

FIG. 2 is a schematic side view of a fixture for a printed circuit board test fixture of the present utility model;

FIG. 3 is a cross-sectional view of a fixture for testing printed circuit boards in accordance with the present utility model;

FIG. 4 is a schematic cross-sectional view of a test board of a fixture for testing printed circuit boards according to the present utility model;

reference numerals in the drawings: 1. a fixed table; 2. a fixing frame; 3. a sliding groove; 4. a sliding block; 5. clamping strips; 6. a fixing plate; 7. a first pneumatic telescopic rod; 8. a test board; 9. a screw rod; 10. a test probe; 11. a threaded rod; 12. a moving plate; 13. a clamping spring; 14. a guide rod; 15. a fixing strip; 16. a groove; 17. the second pneumatic telescopic rod; 18. a mounting groove; 19. a moving block; 20. and (5) adjusting the rod.

Detailed Description

For the purpose of further illustrating the various embodiments, the present utility model provides the accompanying drawings, which are a part of the disclosure of the present utility model, and which are mainly used to illustrate the embodiments and, together with the description, serve to explain the principles of the embodiments, and with reference to these descriptions, one skilled in the art will recognize other possible implementations and advantages of the present utility model, wherein elements are not drawn to scale, and like reference numerals are generally used to designate like elements.

According to an embodiment of the present utility model, there is provided a jig for testing a printed circuit board.

Example 1

As shown in fig. 1-4, a fixture for testing a printed circuit board according to an embodiment of the present utility model includes a fixing table 1, a fixing frame 2 is slidably disposed at the top of the fixing table 1, a sliding groove 3 is disposed at the top of the fixing table 1, a sliding block 4 is fixedly disposed at a position corresponding to the sliding groove 3 at the bottom of the fixing frame 2, a clamping strip 5 is disposed at the top of an inner cavity of the fixing frame 2, fixing plates 6 are fixedly disposed at two sides of the top of the fixing table 1, first pneumatic telescopic rods 7 are symmetrically and fixedly disposed on the fixing plates 6, a test board 8 is fixedly disposed at a moving end of the first pneumatic telescopic rods 7, test probes 10 are uniformly disposed on the test board 8, a screw rod 9 is rotatably disposed in the inner cavity of the sliding groove 3, one end of the screw rod 9 is connected with a stepper motor, the sliding block 4 is sleeved outside the screw rod 9, during testing, the screw rod 9 is driven to rotate by the stepper motor, the fixing frame 2 moves on the fixing table 1, the bottom of the inner cavity of the fixing frame 2 is fixedly disposed with a fixing strip 15, the fixing strip 15 corresponds to the position of the clamping strip 5, grooves 16 are disposed on the fixing strip 15 and the clamping strip 6, grooves 16 are symmetrically disposed on the fixing strip 16, and the grooves 16 are formed on the fixing strip 15, and the clamping strip 16, and grooves 16 are formed in the groove 16, and the groove 16 are located on the inner side of the circuit board, and the groove 16 is located at the side of the circuit board, when the circuit board is in the circuit board.

Example two

As shown in fig. 1-4, a fixture for testing a printed circuit board according to an embodiment of the present utility model includes a fixing table 1, a fixing frame 2 is slidably disposed at the top of the fixing table 1, a sliding groove 3 is disposed at the top of the fixing table 1, sliding blocks 4 are fixedly disposed at positions corresponding to the bottom of the fixing frame 2 and the sliding groove 3, clamping bars 5 are disposed at the top of an inner cavity of the fixing frame 2, fixing plates 6 are fixedly disposed at two sides of the top of the fixing table 1, a first pneumatic telescopic rod 7 is symmetrically and fixedly disposed on the fixing plates 6, a test board 8 is fixedly disposed at a moving end of the first pneumatic telescopic rod 7, test probes 10 are uniformly disposed on the test board 8, a threaded rod 11 is disposed at the top of the fixing frame 2 in a penetrating manner, a moving plate 12 is connected at the bottom end of the threaded rod 11, the clamping bars 13 is connected with the moving plate 12 through a clamping spring 13, and two ends of the moving plate 12 are slidably connected with a top plate of the fixing frame 2 through a guide rod 14, when circuit boards with different heights are inserted, the threaded rod 11 can be manually rotated to enable the moving plate 12 to descend, so that space for fixing the circuit boards is changed, the circuit boards can be clamped, a first pneumatic telescopic rod 7 is fixedly disposed on the fixing plates, a second pneumatic telescopic rod 17 can be further pushed out of the fixing frame 2 through the fixing blocks, and a second pneumatic telescopic rod 17 can be conveniently pushed out of the fixing frame 2.

Example III

As shown in fig. 1-4, a fixture for testing a printed circuit board according to an embodiment of the present utility model includes a fixing table 1, a fixing frame 2 is slidably disposed at the top of the fixing table 1, a sliding groove 3 is disposed at the top of the fixing table 1, a sliding block 4 is fixedly disposed at a position corresponding to the sliding groove 3 at the bottom of the fixing frame 2, a clamping strip 5 is disposed at the top of an inner cavity of the fixing frame 2, fixing plates 6 are fixedly disposed at two sides of the top of the fixing table 1, first pneumatic telescopic rods 7 are symmetrically and fixedly disposed on the fixing plates 6, a test plate 8 is fixedly disposed at a moving end of the first pneumatic telescopic rods 7, test probes 10 are uniformly disposed on the test plate 8, mounting grooves 18 are uniformly disposed on the test plate 8, a moving block 19 is slidably disposed in the mounting grooves 18, the test probes 10 are fixedly disposed on the moving block 19, and an adjusting rod 20 is fixedly disposed on the moving block 19, when testing different circuit boards, the positions of the test probes 10 can be adjusted according to the positions of specific test points on the circuit boards, so that the accuracy of the test probes 10 is ensured, and the test fixture is more suitable for using different circuit boards.

In summary, by means of the above technical scheme of the utility model, when the device is used, the circuit board is directly inserted into the fixing frame 2 vertically, and the positions of the clamping strips 5 are adjusted according to the heights of the circuit board, so that the circuit board is clamped in the fixing frame 2, the test boards 8 on two sides are moved to test the front and back sides of the circuit board, the practicability of the circuit board is improved, when different circuit boards are tested, the positions of the clamping strips 5 can be adjusted again, and the positions of the test probes 10 on the test boards 8 are adjusted again, so that the test of different circuit boards is met, and the practicability of the test is further improved.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (6)

1. The utility model provides a fixture for printed circuit board test, includes fixed station (1), its characterized in that: fixed station (1) top slip is equipped with mount (2), sliding tray (3) have been seted up at fixed station (1) top, fixed frame (2) bottom and sliding tray (3) corresponding fixed sliding block (4) that are equipped with in position, fixed frame (2) inner chamber top is equipped with holding strip (5), fixed plate (6) are equipped with in fixed station (1) top both sides, symmetrical fixed mounting has first pneumatic telescopic link (7) on fixed plate (6), first pneumatic telescopic link (7) remove the end and fix and be equipped with test board (8), evenly be equipped with test probe (10) on test board (8).

2. The fixture for testing a printed circuit board according to claim 1, wherein: the inner cavity of the sliding groove (3) is rotationally provided with a screw rod (9), one end of the screw rod (9) is connected with a stepping motor, and the sliding block (4) is sleeved outside the screw rod (9).

3. The fixture for testing a printed circuit board according to claim 2, wherein: threaded rods (11) are arranged at the tops of the fixing frames (2) in a penetrating mode, moving plates (12) are connected to the bottoms of the threaded rods (11), clamping strips (5) are connected with the moving plates (12) through clamping springs (13), and two ends of the moving plates (12) are connected with the top plates of the fixing frames (2) in a sliding mode through guide rods (14).

4. A fixture for testing a printed circuit board according to claim 3, wherein: the fixing rack is characterized in that a fixing strip (15) is fixedly arranged at the bottom of the inner cavity of the fixing rack (2), the fixing strip (15) corresponds to the clamping strip (5), grooves (16) are formed in the fixing strip (15) and the clamping strip, and the cross section of each groove (16) is in a V shape.

5. The fixture for testing a printed circuit board according to claim 4, wherein: the slot is formed in the front side of the fixing frame (2), a second pneumatic telescopic rod (17) is fixedly mounted on the rear side of the fixing frame (2), and a pushing block is fixedly connected to the moving end of the second pneumatic telescopic rod (17).

6. The fixture for testing a printed circuit board according to claim 5, wherein: the test board (8) is evenly provided with mounting grooves (18), a moving block (19) is arranged in the mounting grooves (18) in a sliding mode, the test probe (10) is fixedly arranged on the moving block (19), and an adjusting rod (20) is fixedly arranged on the moving block (19).