CN218383175U

CN218383175U - PCBA board test fixture

Info

Publication number: CN218383175U
Application number: CN202222698224.7U
Authority: CN
Inventors: 文春辉
Original assignee: Wuhan Sunshine Precision Industrial Co ltd
Current assignee: Wuhan Sunshine Precision Industrial Co ltd
Priority date: 2022-10-13
Filing date: 2022-10-13
Publication date: 2023-01-24
Anticipated expiration: 2032-10-13

Abstract

The utility model discloses a PCBA board test fixture, belong to PCBA board test technical field, when having examined the PCBA board, rotate through the motor and drive a series of transmission structure and rotate, and then the test probe that makes can move down, and contact with PCBA board, but the number of turns of motor rotation can't be controlled, this makes the test probe can continue to move down after contacting the PCBA board, causes the bending damage of test probe, has increased the problem of unnecessary resource consumption, including the roof, roof top surface center department is fixed with places the board, is fixed with the screens ware on four perpendicular center lines of roof top surface respectively; the utility model discloses move and connect the electricity piece and just contact with static electricity piece, the electric push rod stops to remove, and test probe detects the PCBA board, moves the catch bar on detecting the completion back, to moving the screens pole toward, takes off the PCBA board to when making test probe just contact the PCBA board, the electric push rod can stop work at once, has effectively avoided test probe's damage.

Description

PCBA board test fixture

Technical Field

The utility model belongs to the technical field of the PCBA board test, concretely relates to PCBA board test fixture.

Background

PCBs are important electronic components, support for electronic components, and providers for the connection of electronic components and circuits, and are called "printed" circuit boards because they are manufactured using electronic printing techniques. Before the advent of printed circuit boards, interconnections between electronic components were completed by direct wire connections. The PCBA is a PCB with soldered and assembled electronic components, which is a PCB blank board that is subjected to SMT loading and then subjected to the whole manufacturing process of a DIP plug-in.

Patent publication number is CN 212433333U's a PCBA board test fixture among the prior art, including test platform, test platform's up end is provided with PCBA board constant head tank, the even movable mounting in the middle of PCBA board constant head tank has four PCBA board location curb plates, one side fixed mounting of PCBA board location curb plate has the guide bar, the clamping spring is installed to the one end of guide bar and test platform's centre, test platform's internally mounted has the motor, the front end fixed mounting of motor has motor gear, rotating gear is installed to motor gear's top, rotating gear's centre fixed mounting has drive bearing, drive bearing's both ends tip outside fixed mounting has drive bevel gear.

Above-mentioned patent is when detecting the PCBA board, drives a series of transmission structures through the motor for flexible post drives lift roof and lift roof fixed surface's probe fixed plate down in step, makes between the test probe of probe fixed plate internally mounted and is contacted by the PCBA board of clamping, reaches the detection purpose, and detection effect is very good, nevertheless still exists following not enoughly in the in-service use: if when detecting the PCBA board, rotate through the motor and drive a series of transmission structure and rotate, and then the test probe that makes can move down to with the contact of PCBA board, but the motor rotates the number of turns and can't control, this makes the test probe can continue to move down after contacting the PCBA board, causes the crooked damage of test probe, has increased unnecessary resource consumption.

Therefore, a PCBA board test fixture is needed, and the problems that when the PCBA board is detected in the prior art, a series of transmission structures are driven to rotate through the rotation of a motor, so that a test probe can move downwards and is in contact with the PCBA board, but the number of rotation turns of the motor cannot be controlled, the test probe can continue to move downwards after contacting the PCBA board, the test probe is bent and damaged, and redundant resource consumption is increased are solved.

SUMMERY OF THE UTILITY MODEL

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

In order to achieve the above purpose, the utility model provides a following technical scheme: a PCBA board test fixture comprises a top plate, wherein a placing plate is fixed at the center of the top surface of the top plate, clamping devices are respectively fixed on four vertical center lines of the top surface of the top plate, an electric push rod is fixed on one side of the top surface of the top plate, a probe fixing plate is arranged on the electric push rod, a test probe is arranged on the bottom surface of the probe fixing plate, a rotating component is arranged below the top plate, and a control component is arranged on the top plate; the control assembly comprises a static electricity connection block, the static electricity connection block is fixed at one side corner of the top surface of the placing plate, and a dynamic electricity connection block matched with the static electricity connection block is arranged at one side corner of the bottom surface of the probe fixing plate.

It is further worth explaining that the rotating assembly comprises a bottom plate, a plurality of rotating shafts are fixed on the top surface of the bottom plate, gears are arranged on the top surface of the rotating shafts and are adjacent to the gears, rotating rings are arranged on the top surface of the bottom plate, supporting columns are fixed on two sides of the top surface of each rotating ring respectively, the top surfaces of the supporting columns are fixed with the bottom surface of the top plate, racks are arranged on the inner side walls of the rotating rings, and the gears are meshed with the racks.

It should be further noted that a connecting rod is fixed on the top surface of the electric push rod shaft, and the connecting rod is of an L-shaped structure.

In a preferred embodiment, a pushing plate is fixed on the bottom surface of the connecting rod, and the bottom surface of the pushing plate is fixed on the top surface of the probe fixing plate.

As a preferred embodiment, the lateral grooves are respectively formed in two side surfaces of the clamping device, a clamping rod is arranged in the clamping device, clamping columns are respectively fixed to two sides of one end of the clamping rod, the clamping columns are clamped in the lateral grooves, a movable column is fixed to one end of each clamping rod, and a spring is arranged on the outer side wall of each movable column.

In a preferred embodiment, the other end of the blocking rod is fixed with rubber teeth, and the rubber teeth are of a sawtooth structure.

Compared with the prior art, the utility model provides a pair of PCBA board test fixture includes following beneficial effect at least:

(1) Through four screens poles of outside promotion, screens pole removal and compression spring, the PCBA board that will need the test is put on placing the board surface, loosen four screens poles, spring release elasticity blocks the PCBA board, start the electric push rod, the electric push rod drives the catch plate and moves down, make the power connection piece and test probe move down in step, when test probe contacts with the node one-to-one on PCBA board surface, the power connection piece just contacts with the static electricity piece this moment, the electric push rod stops moving, test probe detects the PCBA board, detect the catch plate that moves up after accomplishing, to moving the screens pole, take off the PCBA board, thereby when making test probe just contact with the PCBA board, the electric push rod can stop working at once, effectively avoided test probe's damage.

(2) When the direction of PCBA board is adjusted through needs, promote the roof to one side, the roof rotates and drives branch rotation, and branch rotates and drives the rotating ring and rotate for three gear revolve, thereby make the direction of PCBA board after fixing still can change, and then can be suitable for the needs of different scenes.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of the top plate structure of the present invention;

FIG. 3 is a schematic view of the structure of the pushing plate of the present invention;

fig. 4 is a schematic view of the structure of the positioning device of the present invention.

In the figure: 1. a base plate; 2. a top plate; 3. an electric push rod; 4. a rotating ring; 5. a gear; 6. placing a plate; 7. a position clamping device; 8. a support post; 9. an electrostatic connection block; 10. a dynamic power connection block; 11. a push plate; 12. testing the probe; 13. a probe fixing plate; 14. a position clamping rod; 15. rubber teeth; 16. a movable post; 17. a spring; 18. a position clamping column; 19. a side groove; 20. a connecting rod; 21. a rotating shaft.

Detailed Description

The present invention will be further described with reference to the following examples.

In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the following will combine the drawings of the embodiments of the present invention to clearly and completely describe the technical solution of the embodiments of the present invention, and obviously, the described embodiments are a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative labor are within the scope of the protection of the present invention based on the described embodiments of the present invention.

The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention. The condition in the embodiment can be according to concrete condition do further adjustment the utility model discloses a it is right under the design prerequisite the utility model discloses a simple improvement of method all belongs to the utility model discloses the scope of requiring protection.

Referring to fig. 1-4, the utility model provides a PCBA board test fixture, which comprises a top plate 2, a placing plate 6 is fixed at the center of the top surface of the top plate 2, a position clamping device 7 is fixed on four vertical center lines of the top surface of the top plate 2, an electric push rod 3 is fixed on one side of the top surface of the top plate 2, a probe fixing plate 13 is arranged on the electric push rod 3, a test probe 12 is arranged on the bottom surface of the probe fixing plate 13, a rotating component is arranged below the top plate 2, and a control component is arranged on the top plate 2; the control assembly comprises a static electricity block 9, the static electricity block 9 is fixed at one side corner of the top surface of the placing plate 6, a dynamic electricity block 10 matched with the static electricity block 9 is arranged at one side corner of the bottom surface of the probe fixing plate 13, and the static electricity block 9 and the dynamic electricity block 10 are respectively electrically connected with each other through the electric push rod 3.

Further as shown in fig. 1 and fig. 2, it is worth specifically explaining that the rotating assembly includes a bottom plate 1, a plurality of rotating shafts 21 are fixed on the top surface of the bottom plate 1, gears 5 are arranged on the top surfaces of the rotating shafts 21, the adjacent gears 5 are engaged with each other, a rotating ring 4 is arranged on the top surface of the bottom plate 1, support posts 8 are respectively fixed on two sides of the top surface of the rotating ring 4, the top surfaces of the support posts 8 are fixed on the bottom surface of the top plate 2, racks are arranged on the inner side walls of the rotating ring 4, and the gears 5 on two sides are engaged with the racks, so that the PCBA plate can still rotate as required after being fixed, and further the direction can be changed.

As further shown in fig. 1 and 3, it is worth specifically explaining that a connecting rod 20 is fixed on the top surface of the shaft of the electric push rod 3, and the connecting rod 20 is in an L-shaped structure, so as to connect the push plate 11 and the electric push rod 3.

The scheme has the following working processes: promote four screens poles 14 respectively to the outside, screens pole 14 remove and compression spring 17, the PCBA board that will need the test is put and is being placed 6 surperficials on, loosen four screens poles 14, spring 17 release elasticity blocks the PCBA board, start electric push rod 3, electric push rod 3 drives push plate 11 and moves down, make power connection piece 10 and test probe 12 move down in step, when test probe 12 contacts with the node one-to-one on PCBA board surface, power connection piece 10 just contacts with static electricity piece 9 this moment, electric push rod 3 stops moving, test probe 12 detects the PCBA board, move up push plate 11 after the detection is accomplished, to pushing screens pole 14 toward, take off the PCBA board.

When the direction of PCBA board needs to be adjusted, the top plate 2 is pushed to one side, the top plate 2 rotates to drive the supporting rod 8 to rotate, and the supporting rod 8 rotates to drive the rotating ring 4 to rotate, so that the three gears 21 rotate.

According to the working process, the following steps are known: promote four screens poles 14 to the outside, the PCBA board that will need the test is put and is placed board 6 on the surface, loosen four screens poles 14, the PCBA board is fixed, start electric push rod 3, move and connect electric block 10 and test probe 12 to move down in step to with PCBA board surface contact, test probe 12 detects the PCBA board to when making test probe 12 just contact the PCBA board, electric push rod 3 can stop working at once, effectively avoided the damage of test probe 12.

When the direction of PCBA board needs to be adjusted, push roof 2 to one side can to make the direction of PCBA board after fixed still can change, and then can be suitable for the needs of different scenes.

As further shown in fig. 1 and 3, it is worth specifying that the pushing plate 11 is fixed to the bottom surface of the connecting rod 20, and the bottom surface of the pushing plate 11 is fixed to the top surface of the probe fixing plate 13, so that the probe fixing plate 13 can move.

As further shown in fig. 1, fig. 2 and fig. 4, it is worth specifically describing that side grooves 19 are respectively formed on two side surfaces of the detent device 7, a detent lever 14 is disposed in the detent device 7, detent posts 18 are respectively fixed on two sides of one end of the detent lever 14, the detent posts 18 are engaged in the side grooves 19, a movable post 16 is fixed on one end of the detent lever 14, and a spring 17 is disposed on an outer side wall of the movable post 16, so that the PCBA board can be fixed, and detection of the PCBA board is facilitated.

Further, as shown in fig. 4, it is worth specifically explaining that the rubber teeth 15 are fixed at the other end of the position clamping rod 14, and the rubber teeth 15 are of a zigzag structure, so that the PCBA board can be tightly fixed, and the condition that the PCBA board bounces when the force is not uniform is avoided.

To sum up: promote four screens poles 14 respectively to the outside, screens pole 14 remove and compression spring 17, the PCBA board that will need the test is put and is being placed 6 surperficials on, loosen four screens poles 14, spring 17 release elasticity blocks the PCBA board, start electric push rod 3, electric push rod 3 drives push plate 11 and moves down, make power connection piece 10 and test probe 12 move down in step, when test probe 12 contacts with the node one-to-one on PCBA board surface, power connection piece 10 just contacts with static electricity piece 9 this moment, electric push rod 3 stops moving, test probe 12 detects the PCBA board, move up push plate 11 after the detection is accomplished, to pushing away screens pole 14, take off the PCBA board, thereby when making test probe 12 just contact the PCBA board, electric push rod 3 can stop working at once, effectively avoided test probe 12's damage.

When the direction of needs adjustment PCBA board, promote roof 2 to one side, roof 2 rotates and drives branch 8 and rotate, and branch 8 rotates and drives swivel becket 4 and rotate for three gear 21 rotates, thereby makes the direction of PCBA board after fixed still can change, and then can be suitable for the needs of different scenes.

The electric push rod 3 and the test probe 12 are commercially available, are well known in the art, and therefore are not repeated in the specification.

Unless defined otherwise, technical or scientific terms used herein should be understood as commonly understood by one of ordinary skill in the art, and the use of the terms "comprising" or "including" and the like in the present invention is intended to mean that elements or items listed before the term encompass elements or items listed after the term and their equivalents, without excluding other elements or items, that "connected" or "connected" and the like are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect, that "up", "down", "left", "right", and the like are used merely to indicate relative positional relationships, which may also change accordingly when the absolute position of the object being described changes.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various 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. A PCBA board test fixture comprises a top plate (2), and is characterized in that a placing plate (6) is fixed at the center of the top surface of the top plate (2), clamping devices (7) are respectively fixed on four vertical center lines of the top surface of the top plate (2), an electric push rod (3) is fixed on one side of the top surface of the top plate (2), a probe fixing plate (13) is arranged on the electric push rod (3), a test probe (12) is arranged on the bottom surface of the probe fixing plate (13), a rotating assembly is arranged below the top plate (2), and a control assembly is arranged on the top plate (2);

the control assembly comprises a static electricity connecting block (9), the static electricity connecting block (9) is fixed at the corner of one side of the top surface of the placing plate (6), and a dynamic electricity connecting block (10) matched with the static electricity connecting block (9) is arranged at the corner of one side of the bottom surface of the probe fixing plate (13).

2. The PCBA board test fixture of claim 1, wherein: the rotating assembly comprises a bottom plate (1), a plurality of rotating shafts (21) are fixed to the top surface of the bottom plate (1), gears (5) are arranged on the top surface of the rotating shafts (21) and are adjacent to each other, the gears (5) are meshed with each other, rotating rings (4) are arranged on the top surface of the bottom plate (1), supporting columns (8) are fixed to the two sides of the top surface of each rotating ring (4) respectively, the top surfaces of the supporting columns (8) are fixed to the bottom surface of a top plate (2), racks are arranged on the inner side wall of each rotating ring (4), and the gears (5) are meshed with the racks.

3. The PCBA board test fixture of claim 1, wherein: the top surface of the electric push rod (3) shaft is fixed with a connecting rod (20), and the connecting rod (20) is of an L-shaped structure.

4. The PCBA board test fixture of claim 3, wherein: the bottom surface of the connecting rod (20) is fixed with a pushing plate (11), and the bottom surface of the pushing plate (11) is fixed with the top surface of the probe fixing plate (13).

5. The PCBA board test fixture of claim 1, wherein: side channel (19) have been seted up respectively to screens ware (7) both sides face, be provided with screens pole (14) in screens ware (7), screens pole (14) one end both sides are fixed with screens post (18) respectively, screens post (18) block is in side channel (19), screens pole (14) one end is fixed with movable post (16), activity post (16) lateral wall is provided with spring (17).

6. The PCBA board test fixture of claim 5, wherein: the other end of the clamping rod (14) is fixed with rubber teeth (15), and the rubber teeth (15) are of a sawtooth structure.