CN221960250U - PCB board functional test tool with adjustable - Google Patents

Abstract

The utility model relates to the technical field of PCB boards, and specifically to an adjustable PCB board functional test fixture, including: a test bench, a positioning mechanism for clamping and positioning the PCB board; the positioning mechanism includes: a first threaded rod and a second threaded rod rotatably mounted on the side wall of the test bench, a motor fixedly mounted at one end of the first threaded rod, and a threaded seat threadedly mounted on the outer edges of the first threaded rod and the second threaded rod. In the utility model, through the mutual cooperation of various components, the device is convenient for adjusting the test fixture according to PCB boards of different sizes, which improves the applicability of the test fixture, and can clamp the four sides of the PCB board, avoiding the easy deviation when positioning the PCB board, improving the convenience and accuracy of the later detection of the PCB board, and at the same time, during the clamping process, it plays a buffering and protective role for the PCB board, avoiding damage to the PCB board when clamping, and improving the practicality of the device.

Description

An adjustable PCB board functional test fixture

Technical Field

The utility model relates to the technical field of PCB boards, and in particular to an adjustable PCB board function test fixture.

Background Art

PCB (Printed Circuit Board), Chinese name for printed circuit board, also known as printed circuit board, is an important electronic component, the support of electronic components, and the carrier of electrical connection of electronic components. Because it is made by electronic printing, it is called a "printed" circuit board;

After the PCB board is assembled, it needs to be tested. However, when testing the PCB board, in order to prevent the PCB board from moving, a test fixture is needed to position and fix the PCB board.

However, some existing test fixtures are not convenient to adjust according to PCB boards of different sizes when in use, which reduces the applicability of the test fixtures. In addition, the two sides of the PCB board are usually clamped directly, and the four sides of the PCB board cannot be clamped, which makes it easy to cause deviations when positioning the PCB board.

Therefore, it is necessary to provide a new technical solution to overcome the above-mentioned defects.

Utility Model Content

The purpose of the utility model is to provide an adjustable PCB board function test fixture which can effectively solve the above technical problems.

In order to achieve the purpose of this utility model, the following technical solutions are adopted:

An adjustable PCB function test fixture comprises: a test bench, a positioning mechanism for clamping and positioning a PCB board; the positioning mechanism comprises: a first threaded rod and a second threaded rod rotatably mounted on a side wall of the test bench, a motor fixedly mounted at one end of the first threaded rod, a threaded seat threadedly mounted on the outer edges of the first threaded rod and the second threaded rod, a connecting plate fixedly mounted on the top of the threaded seat, a connecting shell fixedly mounted on one side of the connecting plate, a first rubber pad fixedly mounted on one side of the connecting shell, a rotating rod rotatably mounted on the top of the connecting shell, a rotating disk fixedly mounted on the top of the rotating rod, a linkage gear fixedly mounted on the bottom end of the rotating rod, a rack meshingly mounted on the linkage gear, a clamping plate fixedly mounted at one end of the rack, a second rubber pad fixedly mounted on one side of the clamping plate, and a linkage assembly arranged in the inner cavity of the connecting shell; the linkage assembly comprises: a slide groove opened on the inner wall of the connecting shell, a linkage spring fixedly mounted on the inner wall of the slide groove, a slider and a fixed rod sleeved on the outer edge of the linkage spring.

Furthermore, the motor is fixedly mounted on a side wall of the test bench, the first threaded rod and the second threaded rod are fixedly connected at one end close to each other, and the thread directions of the outer edges of the first threaded rod and the second threaded rod are opposite.

Furthermore, guide rods are symmetrically installed through the side walls of the threaded seat, and both ends of the guide rods are fixedly connected to the inner wall of the test bench.

Furthermore, a limit opening is symmetrically provided on the top of the test bench, and the outer edge of the connecting plate passes through the inner cavity of the limit opening.

Furthermore, the slider is fixedly connected to the rack, the rack is installed through the side wall of the connecting shell, one end of the linkage spring is fixedly installed on the side wall of the slider, and the other end is fixedly installed on the inner wall of the slide groove.

Compared with the prior art, the utility model has the following beneficial effects:

The utility model discloses an adjustable PCB function test fixture. Through the mutual cooperation of various components, the device is convenient for adjusting the test fixture according to PCB boards of different sizes, thereby improving the applicability of the test fixture. The four sides of the PCB board can be clamped, thereby avoiding deviation when positioning the PCB board, improving the convenience and accuracy of later detection of the PCB board, and at the same time, during the clamping process, the PCB board is buffered and protected, thereby avoiding damage to the PCB board when clamping, thereby improving the practicality of the device.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

FIG. 1 is a three-dimensional schematic diagram of an adjustable PCB board function test fixture of the present invention.

FIG2 is a schematic cross-sectional view of a component test bench of an adjustable PCB board functional test fixture of the present invention.

FIG3 is a schematic cross-sectional view of a component connection shell of an adjustable PCB board functional test fixture of the present invention.

FIG. 4 is a three-dimensional schematic diagram of a component linkage gear and a rack of an adjustable PCB board functional test fixture of the present invention.

In the figure: 1. test bench; 2. motor; 3. first threaded rod; 4. second threaded rod; 5. threaded seat; 6. guide rod; 7. connecting plate; 8. connecting shell; 9. first rubber pad; 10. rotating rod; 11. rotating disk; 12. linkage gear; 13. rack; 14. slider; 15. fixing rod; 16. linkage spring; 17. clamping plate; 18. second rubber pad.

DETAILED DESCRIPTION

In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below. Obviously, the described embodiments are partial embodiments of the utility model, rather than all embodiments.

In the description of the present utility model, it should be understood that the terms "center", "lateral", "longitudinal", "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present utility model. When a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a centered component. When a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centered component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a centered component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

As shown in FIG. 1 to FIG. 4 , the utility model is an adjustable PCB board function test fixture, comprising: a test bench 1, a positioning mechanism for clamping and positioning the PCB board;

The positioning mechanism includes: a first threaded rod 3 and a second threaded rod 4 rotatably mounted on the side wall of the test bench 1, a motor 2 fixedly mounted at one end of the first threaded rod 3, a threaded seat 5 threadedly mounted on the outer edges of the first threaded rod 3 and the second threaded rod 4, a connecting plate 7 fixedly mounted on the top of the threaded seat 5, a connecting shell 8 fixedly mounted on one side of the connecting plate 7, a first rubber pad 9 fixedly mounted on one side of the connecting shell 8, a rotating rod 10 rotatably mounted on the top of the connecting shell 8, a rotating disk 11 fixedly mounted on the top of the rotating rod 10, a linkage gear 12 fixedly mounted on the bottom end of the rotating rod 10, a rack 13 meshingly mounted on the linkage gear 12, a clamping plate 17 fixedly mounted at one end of the rack 13, and a clamping plate 17 fixedly mounted on the clamping plate A second rubber pad 18 on one side of 17, and a linkage assembly arranged in the inner cavity of the connecting shell 8, the linkage assembly includes: a slide groove opened on the inner wall of the connecting shell 8, a linkage spring 16 fixedly installed on the inner wall of the slide groove, a slider 14 and a fixing rod 15 sleeved on the outer edge of the linkage spring 16, the motor 2 is fixedly installed on the side wall of the test bench 1, the first threaded rod 3 and the second threaded rod 4 are close to each other at one end, and the threads of the first threaded rod 3 and the second threaded rod 4 are in opposite directions, the slider 14 and the rack 13 are fixedly connected, and the rack 13 is installed through the side wall of the connecting shell 8, one end of the linkage spring 16 is fixedly installed on the side wall of the slider 14, and the other end is fixedly installed on the inner wall of the slide groove;

Place the PCB board at the top center of the test bench 1. At this time, the distance between the two clamping plates 17 can be adjusted according to the size of the PCB board, that is, by rotating the turntable 11, the turntable 11 drives the rotating rod 10 to rotate, and the rotating rod 10 drives the two racks 13 to move to the outside of the connecting shell 8, and the two racks 13 drive the adjacent clamping plates 17 and the slider 14 to move, so that the position of the clamping plates 17 can be adjusted so that the distance between the two clamping plates 17 is larger than the size of the PCB board, and the slider 14 drives the linkage spring 16 to stretch;

At this time, by starting the motor 2, the power output shaft of the motor 2 drives the first threaded rod 3 to rotate, and the first threaded rod 3 drives the second threaded rod 4 to rotate. Since the thread directions of the outer edges of the first threaded rod 3 and the second threaded rod 4 are opposite, the rotation of the first threaded rod 3 and the second threaded rod 4 can drive the two threaded seats 5 to approach each other at the same time, and the two threaded seats 5 drive the adjacent connecting plates 7 to move, and the two connecting plates 7 drive the adjacent connecting shells 8 to move, so that the positions of the two connecting shells 8 can be adjusted, and the PCB board can be clamped and positioned by the two connecting shells 8 approaching each other, and the two first rubber pads 9 can be provided to avoid contact between the connecting shell 8 and the PCB board, which may cause damage to the PCB board when clamped, and the PCB board can be protected from buffering. In addition, the friction between the connecting shell 8 and the PCB board can be increased, thereby improving the firmness of the clamping.

When the two connecting shells 8 have finished clamping the PCB board, by loosening the two rotating disks 11, the adjacent sliders 14 can be driven to reset by the elastic force of the linkage spring 16, and the adjacent racks 13 can be driven to reset by the two sliders 14, and the adjacent clamping plates 17 can be driven to approach each other by the two racks 13, so that the PCB board can be clamped and fixed. The two second rubber pads 18 can be set to avoid contact between the clamping plates 17 and the PCB board, which may cause damage to the PCB board during clamping, and play a buffering and protective role for the PCB board. In addition, the friction between the clamping plates 17 and the PCB board can be increased, thereby improving the firmness of the clamping.

Therefore, the device is convenient for adjusting the test fixture according to PCB boards of different sizes, thus improving the applicability of the test fixture. The device can clamp the four sides of the PCB board, thus avoiding deviation when positioning the PCB board, thus improving the convenience and accuracy of later detection of the PCB board. Meanwhile, during the clamping process, the device provides a buffering protection for the PCB board, thus avoiding damage to the PCB board when clamping, thus improving the practicality of the device.

A guide rod 6 is symmetrically installed on the side wall of the threaded seat 5, and both ends of the guide rod 6 are fixedly connected to the inner wall of the test bench 1;

By setting the guide rod 6, the threaded seat 5 can be limited so that the threaded seat 5 can keep moving in a straight line.

A limited opening is symmetrically provided on the top of the test bench 1, and the outer edge of the connecting plate 7 passes through the inner cavity of the limited opening.

By setting the limiting opening, the connection plate 7 can be limited so that the connection plate 7 keeps moving in a straight line.

Working principle: When in use, place the PCB board at the center of the top of the test bench 1. At this time, according to the size of the PCB board, first adjust the distance between the two clamping plates 17, that is, by rotating the turntable 11, the turntable 11 drives the rotating rod 10 to rotate, and the rotating rod 10 drives the two racks 13 to move to the outside of the connecting shell 8, and the two racks 13 drive the adjacent clamping plates 17 and the slider 14 to move, so that the position of the clamping plates 17 can be adjusted, so that the distance between the two clamping plates 17 is larger than the size of the PCB board, and the slider 14 drives the linkage spring 16 to stretch, and at this time, by starting the motor 2, the power input of the motor 2 The output shaft drives the first threaded rod 3 to rotate, and the second threaded rod 4 is driven to rotate through the first threaded rod 3. Since the thread directions of the outer edges of the first threaded rod 3 and the second threaded rod 4 are opposite, the rotation of the first threaded rod 3 and the second threaded rod 4 can drive the two threaded seats 5 to approach each other at the same time, and the adjacent connecting plates 7 are driven to move through the two threaded seats 5, and the adjacent connecting shells 8 are driven to move through the two connecting plates 7, so that the positions of the two connecting shells 8 can be adjusted, and the PCB board can be clamped and positioned by the mutual approach of the two connecting shells 8, and the contact between the connecting shells 8 and the PCB board can be avoided by the provision of the two first rubber pads 9. The PCB board is damaged when it is clamped, which plays a buffering and protective role for the PCB board. In addition, the friction between the connecting shell 8 and the PCB board can be increased, and the firmness of the clamping is improved. When the two connecting shells 8 have completed the clamping of the PCB board, the two rotating disks 11 are loosened, and the elastic force of the linkage spring 16 can drive the adjacent sliders 14 to reset, and the adjacent racks 13 are driven to reset by the two sliders 14, and the adjacent clamping plates 17 are driven to approach each other by the two racks 13, so that the PCB board can be clamped and fixed, and the contact between the clamping plates 17 and the PCB board can be avoided by the provision of the two second rubber pads 18, leading to The PCB board is not damaged when it is clamped, and the PCB board is protected by a buffer. In addition, the friction between the clamping plate 17 and the PCB board can be increased, and the firmness of the clamping is improved, so that the device is convenient for adjusting the test fixture according to PCB boards of different sizes, thereby improving the applicability of the test fixture. The four sides of the PCB board can be clamped, thereby avoiding deviations when positioning the PCB board, improving the convenience and accuracy of later detection of the PCB board, and at the same time, during the clamping process, the PCB board is protected by a buffer, thereby avoiding damage to the PCB board when it is clamped, thereby improving the practicality of the device.

The standard parts used in the utility model can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

Claims (5)

1. An adjustable PCB board functional test fixture, characterized by comprising: a test bench, a positioning mechanism for clamping and positioning the PCB board; The positioning mechanism includes: a first threaded rod and a second threaded rod rotatably mounted on the side wall of the test bench, a motor fixedly mounted at one end of the first threaded rod, a threaded seat threadedly mounted on the outer edges of the first threaded rod and the second threaded rod, a connecting plate fixedly mounted on the top of the threaded seat, a connecting shell fixedly mounted on one side of the connecting plate, a first rubber pad fixedly mounted on one side of the connecting shell, a rotating rod rotatably mounted on the top of the connecting shell, a rotating disk fixedly mounted on the top of the rotating rod, a linkage gear fixedly mounted on the bottom end of the rotating rod, a rack meshing with the linkage gear, a clamping plate fixedly mounted at one end of the rack, a second rubber pad fixedly mounted on one side of the clamping plate, and a linkage assembly arranged in the inner cavity of the connecting shell; The linkage assembly comprises: a slide groove provided on the inner wall of the connecting shell, a linkage spring fixedly installed on the inner wall of the slide groove, and a sliding block and a fixing rod sleeved on the outer edge of the linkage spring. 2. An adjustable PCB board functional test fixture as described in claim 1, characterized in that the motor is fixedly mounted on the side wall of the test bench, the end of the first threaded rod close to the second threaded rod is fixedly connected, and the thread directions of the outer edges of the first threaded rod and the second threaded rod are opposite. 3. An adjustable PCB board functional test fixture as described in claim 1, characterized in that guide rods are symmetrically installed on the side walls of the threaded seat, and both ends of the guide rods are fixedly connected to the inner wall of the test bench. 4. An adjustable PCB board functional test fixture as described in claim 1, characterized in that a limit opening is symmetrically opened on the top of the test bench, and the outer edge of the connecting plate passes through the inner cavity of the limit opening. 5. An adjustable PCB board functional test fixture as described in claim 1, characterized in that the slider and the rack are fixedly connected, the rack is installed through the side wall of the connecting shell, one end of the linkage spring is fixedly installed on the side wall of the slider, and the other end is fixedly installed on the inner wall of the slide groove.