CN213181897U

CN213181897U - Test fixture for PCB testing

Info

Publication number: CN213181897U
Application number: CN202021861374.XU
Authority: CN
Inventors: 高明贵
Original assignee: Suzhou Shengfuyin Electronic Technology Co ltd
Current assignee: Suzhou Shengfuyin Electronic Technology Co ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2021-05-11
Anticipated expiration: 2030-08-31

Abstract

The utility model discloses a test fixture for PCB board test, which comprises a support seat and a support plate, wherein test points are aligned with corresponding probes during test, a pull handle drives a support rod hinged with a connecting block to move the support rod downwards, when the support rod contacts with a press plate, the press plate is pressed downwards, a slide block at the top of the press plate moves downwards on the outer side wall of a guide rod, a spring is simultaneously contracted, the press plate is guided downwards by the guide rod to simultaneously move a fixed rod at the bottom of the press plate downwards, the fixed rod can fix a test product placed on the needle plate after moving downwards to a certain position, a switch is opened for test, the handle is reversely pulled after the test, the support rod is separated from the downward pressure of the press plate, when the press plate loses the downward pressure, the contracted spring can push the press plate back to the original position due to elasticity, the test product can be conveniently and quickly fixed by pulling the handle, and the probes contact with the test points, thereby facilitating the, and meanwhile, the testing efficiency is improved.

Description

Test fixture for PCB testing

Technical Field

The utility model relates to a tool technical field specifically is a test fixture is used in PCB board test.

Background

The jig can be divided into a process assembly type jig, an item test type jig and a circuit board test type jig, wherein the process assembly type jig comprises an assembly jig, a welding jig, a disassembly jig, a dispensing jig, an irradiation jig, an adjustment jig and a shearing jig; the project test type jig comprises a service life test type jig, a packaging test type jig, an environment test type jig, an optical test type jig, a shielding test type jig, a sound insulation test type jig and the like; the circuit board test type jig mainly comprises an ICT test jig, an FCT functional jig, an SMT furnace-passing jig, a BGA test jig and the like, a PCB (printed circuit board), also called as a printed circuit board, is a provider of electrical connection of electronic components, and is mainly designed in a domain design; the main advantages of using circuit boards are that wiring and assembly errors are greatly reduced, automation level and production labor rate are improved, single-sided boards, double-sided boards, four-layered boards, six-layered boards and other multi-layer boards can be divided according to the number of layers of the circuit boards, and because the printed circuit boards are not general terminal products, the definitions of names are slightly disordered, for example: the motherboard for a personal computer, called motherboard, cannot be directly called circuit board, although the existence of the circuit board exists in the motherboard, but it is not the same, so the two aspects cannot be said to be the same when evaluating the industry, and for example: because there are integrated circuit parts loaded on the circuit board, the news media is called as an IC board, but it is not substantially the same as a printed circuit board, and the printed circuit board is a bare board, i.e. a circuit board without components, and when testing after the production of the PCB, the PCB is fixed on a tester, and then the PCB is tested one by a probe, which is time-consuming and needs to be fixed by a plurality of fixing points during the fixing, which is also tedious.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a test fixture is used in test of PCB board to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a test fixture for PCB board test includes:

the supporting seat is characterized in that one side of the supporting seat is connected with a fixed plate through bolt threads, one side of the fixed plate far away from the supporting seat is connected with a fixed block through bolt threads, one side of the fixed block far away from the fixed plate is fixedly connected with a connecting rod, the bottom of the supporting seat is fixedly connected with a base, two guide rods which are mutually symmetrical by taking the fixed block as a center are welded at the top of the base, a limiting block is welded at the top of each guide rod, one side of each limiting block is fixedly connected to the outer side wall of the supporting seat, the outer side wall of each guide rod is connected with a sliding block in a sliding mode, the top of each sliding block is connected with a pressing plate through bolt threads, the outer side;

the support plate, four support columns of top four corners fixedly connected with of support plate, the top fixedly connected with faller of support column, the through-hole has evenly been seted up at the top of faller.

As further preferable in the present technical solution: the one end of connecting rod articulates there is the handle, the other end welding of connecting rod has the loop bar, the inside sliding connection of loop bar has the bracing piece.

As further preferable in the present technical solution: the bottom of handle articulates there is the connecting block, the connecting block is keeping away from the one end of bracing piece articulates in the top of bracing piece, the bracing piece is located the top of clamp plate.

As further preferable in the present technical solution: the top of the carrier plate is evenly and fixedly connected with a probe, and the probe penetrates through the through hole and extends to the outer side wall of the needle plate.

As further preferable in the present technical solution: the top of the pressing plate is evenly in threaded connection with a screw, and the outer side wall of the screw is in threaded connection with a fixing rod.

As further preferable in the present technical solution: one side riveting of base has two switches, the lateral wall welding of supporting seat has the support, the lateral wall riveting of support has the display screen.

Compared with the prior art, the beneficial effects of the utility model are that: the test product is placed on the needle plate, the test points are aligned to corresponding probes, the handle is pulled to drive the support rod hinged with the connecting block, the support rod moves downwards, when the support rod moves downwards to contact with the pressure plate, the pressure plate is pressed downwards, the slide block at the top of the pressure plate moves downwards on the outer side wall of the guide rod due to the downward movement of the pressure plate, the spring starts to contract, the pressure plate is guided downwards by the guide rod to enable the fixed rod at the bottom of the pressure plate to move downwards simultaneously, the test product placed on the needle plate is fixed after the fixed rod moves downwards to a certain position, the switch is opened for testing, the tested data value is displayed through the display screen, the handle is pulled reversely after the test is finished, the support rod is enabled to leave the downward pressure of the pressure plate, when the pressure plate loses the downward pressure, the contracted spring pushes the pressure plate back to the original position due to elasticity, the, the test device is convenient to test each circuit test point of the test product, and simultaneously improves the test efficiency.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the sectional structure of the needle plate of the present invention;

fig. 3 is a schematic sectional structure view of the pressing plate of the present invention.

In the figure: 1. a base; 2. a supporting seat; 3. a fixing plate; 4. a carrier plate; 5. a fixed block; 6. a connecting rod; 7. a guide bar; 8. a limiting block; 9. a slider; 10. pressing a plate; 11. a support bar; 12. a support pillar; 13. a needle plate; 14. a probe; 15. a through hole; 16. a handle; 17. a loop bar; 18. connecting blocks; 19. a screw; 20. fixing the rod; 21. a switch; 22. a support; 23. a display screen; 24. a spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

Referring to fig. 1-3, the present invention provides a technical solution: a test fixture for PCB board test includes:

a supporting seat 2, one side of the supporting seat 2 is connected with a fixed plate 3 through a bolt thread, the supporting seat 2 is used for supporting and fixing the position of the fixed plate 3, one side of the fixed plate 3 far away from the supporting seat 2 is connected with a fixed block 5 through a bolt thread, one side of the fixed block 5 far away from the fixed plate 3 is fixedly connected with a connecting rod 6, a handle 16 and a supporting rod 11 are connected through the connecting rod 6, the supporting rod 11 can be driven to move upwards or downwards by hinging when the handle 16 is pulled, a base 1 is fixedly connected to the bottom of the supporting seat 2, two guide rods 7 which are mutually symmetrical by taking the fixed block 5 as a center are welded at the top of the base 1, the guide rods 7 are used for guiding and limiting the stroke of a sliding block 9, meanwhile, the sliding block 9 can keep the same straight line to vertically slide, one side of the limiting block 8 is fixedly connected to the outer side wall of the supporting seat 2, the limiting block 8 prevents the sliding block 9 from falling off from the outer side wall of the guide rod 7 and limits the upward movement stroke of the sliding block 9, the outer side wall of the guide rod 7 is connected with the sliding block 9 in a sliding manner, the top of the sliding block 9 is connected with a pressing plate 10 through a bolt thread, the pressing plate 10 moves downward under the downward pressure of the supporting rod 11, the sliding block 9 is used for limiting and guiding the pressing plate 10 to move upward or downward in a stable and same straight line manner, a spring 24 is sleeved on the outer side wall of the guide rod 7, the top of the spring 24 is fixedly connected to the top of the base 1, when the sliding block 9 moves downward under the external force, the spring 24 can be contracted, and after the sliding block 9 loses the external force, the sliding block 9 is pushed back to;

support plate 4, four support columns 12 of top four corners fixedly connected with of support plate 4 for support pin plate 13, the top fixedly connected with pin plate 13 of support column 12, through-hole 15 has evenly been seted up at the top of pin plate 13, and probe 14 is tested the test point by the top through running through to pin plate 13, and support column 12 also is used for the protection to probe 14 simultaneously, prevents to lead to probe 14 bending or rupture because of the overdraft.

In this embodiment, specifically: one end of the connecting rod 6 is hinged with a handle 16, the other end of the connecting rod 6 is welded with a loop bar 17, the inside of the loop bar 17 is connected with a supporting rod 11 in a sliding way, and the loop bar 17 can limit and guide the stroke of the supporting rod 11 moving up and down, so that the supporting rod 11 can move on the same vertical line.

In this embodiment, specifically: the bottom of the handle 16 is hinged with a connecting block 18, one end of the connecting block 18, which is far away from the supporting rod 11, is hinged with the top of the supporting rod 11, the supporting rod 11 is located above the pressing plate 10, the connecting block 18 can be driven by pulling the handle 16, and the connecting block 18 can drive the supporting rod 11 to move upwards or downwards in the loop bar 17.

In this embodiment, specifically: the top of the carrier plate 4 is uniformly and fixedly connected with probes 14, the probes 14 penetrate through the through holes 15 and extend to the outer side wall of the needle plate 13, the probes 14 are used for testing test points on a test product, the positions of the probes 14 are limited and fixed by the through holes 15, the probes 14 can be effectively prevented from being broken or bent due to external force, and the service life of the probes 14 is prolonged.

In this embodiment, specifically: the top of the pressing plate 10 is uniformly connected with a screw rod 19 in a threaded manner, the outer side wall of the screw rod 19 is connected with a fixed rod 20 in a threaded manner, and when test products with different thicknesses are tested, the distance between the fixed rod 20 and the needle plate 13 can be adjusted by rotating the fixed rod 20 in threaded connection with the bottom of the screw rod 19, so that the best fixity is obtained.

In this embodiment, specifically: one side of base 1 is riveted with two switches 21, the lateral wall welding of supporting seat 2 has support 22, the lateral wall riveting of support 22 has display screen 23, and display screen 23 that support 22 supported is used for the test data of display probe 14 to testings and test point.

When the test device is used, firstly, a power supply is switched on, then a test article is placed on the needle plate 13, a test point is aligned to a corresponding probe 14, the handle 16 is pulled to drive the support rod 11 hinged at the bottom of the connecting block 18, the support rod 11 moves downwards or upwards, when the support rod 11 moves downwards and contacts the press plate 10, the press plate 10 is pressed downwards, the slide block 9 at the top of the press plate 10 moves downwards on the outer side wall of the guide rod 7 when the press plate 10 moves downwards, the spring 24 begins to contract when the slide block 9 contacts the spring 24, the press plate 10 is guided downwards by the guide rod 7, the fixing rod 20 at the bottom of the press plate 10 moves downwards at the same time, when the fixing rod 20 moves downwards to a position, the test article placed on the needle plate 13 is fixed, the switch 21 is opened for testing, a tested data value is displayed through the display screen 23 fixedly connected with the outer side wall of the, after the test, the handle 16 is pulled reversely, so that the support rod 11 moves upwards to separate from the downward pressure on the press plate 10, when the press plate 10 loses the downward pressure, the contracted spring 24 can push the slide block 9 back to the original position due to the elastic force to drive the press plate 10 to ascend to the original position, and the test article can be conveniently and continuously placed on the needle plate 13 for testing.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a test fixture is used in test of PCB board which characterized in that includes:

the supporting seat comprises a supporting seat (2), one side of the supporting seat (2) is connected with a fixed plate (3) through a bolt thread, one side of the fixed plate (3) far away from the supporting seat (2) is connected with a fixed block (5) through a bolt thread, one side of the fixed block (5) far away from the fixed plate (3) is fixedly connected with a connecting rod (6), the bottom of the supporting seat (2) is fixedly connected with a base (1), the top of the base (1) is welded with two guide rods (7) which are mutually symmetrical by taking the fixed block (5) as a center, the top of each guide rod (7) is welded with a limiting block (8), one side of each limiting block (8) is fixedly connected with the outer side wall of the supporting seat (2), the outer side wall of each guide rod (7) is slidably connected with a sliding block (9), and the, a spring (24) is sleeved on the outer side wall of the guide rod (7), and the top of the spring (24) is fixedly connected to the top of the base (1);

support plate (4), four support columns (12) of top four corners fixedly connected with of support plate (4), top fixedly connected with faller (13) of support column (12), through-hole (15) have evenly been seted up at the top of faller (13).

2. The testing fixture for PCB board test of claim 1, wherein: the one end of connecting rod (6) articulates there is handle (16), the other end welding of connecting rod (6) has loop bar (17), the inside sliding connection of loop bar (17) has bracing piece (11).

3. The testing fixture for PCB board test of claim 2, wherein: the bottom of the handle (16) is hinged with a connecting block (18), one end, far away from the supporting rod (11), of the connecting block (18) is hinged to the top of the supporting rod (11), and the supporting rod (11) is located above the pressing plate (10).

4. The testing fixture for PCB board test of claim 1, wherein: the top of the carrier plate (4) is uniformly and fixedly connected with probes (14), and the probes (14) penetrate through the through holes (15) and extend to the outer side wall of the needle plate (13).

5. The testing fixture for PCB board test of claim 1, wherein: the top of the pressing plate (10) is uniformly in threaded connection with a screw rod (19), and the outer side wall of the screw rod (19) is in threaded connection with a fixing rod (20).

6. The testing fixture for PCB board test of claim 1, wherein: one side riveting of base (1) has two switches (21), the lateral wall welding of supporting seat (2) has support (22), the lateral wall riveting of support (22) has display screen (23).