Auxiliary clamp for testing circuit board

Abstract

The utility model relates to the field of circuit board clamps, and discloses an auxiliary clamp for testing a circuit board, which comprises a bottom plate, the top of the bottom plate is fixedly connected with a workbench, a positioning mechanism is arranged in the workbench, the top of the bottom plate is fixedly connected with a support frame, and the top of the support frame is provided with a driving mechanism. A top plate is arranged in the supporting frame, a pressing mechanism is arranged at the bottom of the top plate and comprises a first connecting rod, the first connecting rod is hinged to the bottom of the bottom plate, a second connecting rod is hinged to the end, away from the top plate, of the first connecting rod, and the first connecting rod and the second connecting rod are elastically connected through a first spring. According to the utility model, through cooperation of the electric cylinder, the top plate, the first connecting rod, the second connecting rod, the first spring and the rubber column, appropriate pressing force can be applied to the circuit board, the possibility that the circuit board is damaged due to overlarge pressure applied by the driving mechanism is avoided, and the protection effect is improved.

Description

Technical Field

[0001] The utility model relates to the field of circuit board fixtures, in particular to an auxiliary fixture for circuit board testing. Background Art

[0002] A circuit board can be called a printed circuit board or printed circuit board. It has the characteristics of high wiring density, light weight, thin thickness, and good flexibility. Before conducting a path test, the circuit board needs to be fixed with a corresponding fixture so that the circuit board is in the correct processing position during processing to undergo the path test.

[0003] Most of the existing circuit board testing fixtures use a driving mechanism such as a cylinder to fix and clamp the circuit board. Although this method is direct, the torque of the driving mechanism is difficult to control during the clamping process, which can easily lead to excessive clamping force on the circuit board, which may damage the circuit board surface or affect the integrity of its internal components, resulting in poor protection effect. Therefore, an auxiliary fixture for circuit board testing is proposed to solve the above problems. Utility Model Content

[0004] In order to remedy the above deficiencies, the present invention provides an auxiliary clamp for circuit board testing, which aims to improve the problem in the prior art that "the surface of the circuit board may be damaged or the integrity of its internal components may be affected during the clamping process."

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an auxiliary fixture for testing a circuit board, comprising a base plate, the top of the base plate is fixedly connected to a workbench, a positioning mechanism is arranged inside the workbench, the top of the base plate is fixedly connected to a support frame, the top of the support frame is provided with a driving mechanism, a top plate is arranged inside the support frame, and a clamping mechanism is arranged at the bottom of the top plate, the clamping mechanism comprises a connecting rod 1, the connecting rod 1 is hinged to the bottom of the base plate, the end of the connecting rod 1 away from the top plate is hinged to the connecting rod 2, the connecting rod 1 and the connecting rod 2 are elastically connected by a spring 1, the bottom of the connecting rod 2 is fixedly connected to a rubber column, and a limiting mechanism is arranged on the right side of the connecting rod 2.

[0006] As a further description of the above technical solution:

[0007] The driving mechanism includes an electric cylinder, which is fixedly mounted on the top of the support frame, and the bottom of the output shaft of the electric cylinder is fixedly connected to the top of the top plate.

[0008] As a further description of the above technical solution:

[0009] The bottom of the top plate is fixedly connected with a test module.

[0010] As a further description of the above technical solution:

[0011] The connecting rod 1 and the connecting rod 2 are both arranged in an inclined state, and the connecting rod 1 and the connecting rod 2 form a V shape.

[0012] As a further description of the above technical solution:

[0013] The limiting mechanism includes a limiting plate and a limiting column. The limiting plate is fixedly installed on the surface of the second connecting rod, and the limiting column is fixedly installed on the surface of the first connecting rod. A limiting groove is provided on the inner wall of the limiting plate.

[0014] As a further description of the above technical solution:

[0015] The limiting groove is configured to be arc-shaped, and the limiting column slides on the inner wall of the limiting groove.

[0016] As a further description of the above technical solution:

[0017] The positioning mechanism includes a positioning block. A slide groove is provided on the top of the workbench. The positioning block is slidably mounted on the inner wall of the slide groove. The positioning block is elastically connected to the inner wall of the slide groove through a second spring.

[0018] As a further description of the above technical solution:

[0019] The number of the positioning blocks is set to be multiple, and the multiple positioning blocks are symmetrically arranged on the top of the workbench, and the shape of the positioning blocks is set to be L-shaped.

[0020] The utility model has the following beneficial effects:

[0021] 1. In the utility model, through the cooperation of the electric cylinder, the top plate, the connecting rod 1, the connecting rod 2, the spring 1 and the rubber column, a suitable pressing force can be applied to the circuit board, thereby avoiding the possibility of damage to the circuit board due to excessive pressure applied by the driving mechanism, thereby improving the protection effect.

[0022] 2. In the present invention, the circuit board is placed on the workbench in the middle of multiple positioning blocks through the cooperation of the positioning blocks, the slide groove and the spring. Then, the positioning blocks are released to push the circuit board to the center of the workbench, thereby preventing the position of the circuit board from deviating from the test area and improving the accuracy of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0024] Figure 2 It is a three-dimensional structural diagram of the driving mechanism, top plate, pressing mechanism and limiting mechanism in the utility model;

[0025] Figure 3It is a three-dimensional structural diagram of the pressing mechanism and the limiting mechanism in the utility model;

[0026] Figure 4 It is a schematic cross-sectional view of the three-dimensional structure of the workbench and positioning mechanism in the present invention.

[0027] Legend:

[0028] 1. Bottom plate; 2. Workbench; 3. Support frame; 4. Electric cylinder; 5. Top plate; 6. Connecting rod 1; 7. Connecting rod 2; 8. Spring 1; 9. Rubber column; 10. Limit plate; 11. Limit column; 12. Limit slot; 13. Positioning block; 14. Slide; 15. Spring 2; 16. Test module. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Reference Figure 1 The utility model provides an embodiment: an auxiliary fixture for testing a circuit board, comprising a base plate 1, which plays a supporting role and improves the stability of the equipment during operation. The top of the base plate 1 is fixedly connected to a workbench 2 for testing the circuit board, and a positioning mechanism is provided inside the workbench 2. The top of the base plate 1 is fixedly connected to a support frame 3 that plays a supporting and stabilizing role, and a driving mechanism is provided on the top of the support frame 3. The inside of the support frame 3 is provided with a top plate 5 arranged in a horizontal state, and a pressing mechanism is provided at the bottom of the top plate 5.

[0031] Reference Figure 2 、 Figure 3 The clamping mechanism includes a connecting rod 6, which is hinged at the bottom of the base plate 1, and a connecting rod 2 7 is hinged at one end of the connecting rod 6 away from the top plate 5. The lengths of the connecting rod 1 6 and the connecting rod 2 7 are equal, and the connecting rod 1 6 and the connecting rod 2 7 are both set to an inclined state. The connecting rod 1 6 and the connecting rod 2 7 form a V shape, and the connecting rod 1 6 and the connecting rod 2 7 are elastically connected by a spring 1 8. The bottom of the connecting rod 2 7 is fixedly connected with a rubber column 9 with good elasticity, which can play a buffering role and at the same time increase the friction force, improve the stability of the circuit board fixation, and protect the surface of the circuit board to prevent the circuit board surface from being scratched and damaged, thereby improving the protection effect. A limiting mechanism is set on the right side of the connecting rod 2 7.

[0032] Reference Figure 1 、 Figure 2The driving mechanism includes an electric cylinder 4 for providing power. The electric cylinder 4 is fixedly installed on the top of the support frame 3. The bottom of the output shaft of the electric cylinder 4 is fixedly connected to the top of the top plate 5. The operation of the electric cylinder 4 causes the top plate 5 to move up and down. The bottom of the top plate 5 is fixedly connected with a test module 16 for testing the circuit board, which is the existing technology.

[0033] Reference Figure 3 The limiting mechanism includes a limiting plate 10 and a limiting column 11. The limiting plate 10 is fixedly mounted on the surface of the connecting rod 2 7, and the limiting column 11 is fixedly mounted on the surface of the connecting rod 1 6. A limiting groove 12 is provided on the inner wall of the limiting plate 10. The limiting groove 12 is arranged in an arc shape. The limiting column 11 slides on the inner wall of the limiting groove 12. Through the cooperation of the limiting column 11 and the limiting groove 12, the connecting rod 1 6 and the connecting rod 2 7 have a rotation angle that plays a limiting role, which can play a protective role and prevent the connecting rod 1 6 and the connecting rod 2 7 from causing damage to the equipment due to excessive rotation angle.

[0034] Reference Figure 1 、 Figure 4 The positioning mechanism includes a positioning block 13. A slide groove 14 is provided on the top of the workbench 2. The positioning block 13 is slidably installed on the inner wall of the slide groove 14. The positioning block 13 is elastically connected to the inner wall of the slide groove 14 through a spring 2 15. The number of positioning blocks 13 is set to multiple, and multiple positioning blocks 13 are symmetrically arranged on the top of the workbench 2. By pulling the positioning block 13 and placing the circuit board in the middle of multiple positioning blocks 13, and then releasing the positioning block 13, the positioning block 13 is reset under the elastic force of the spring 2 15, and the circuit board is pushed to the center of the workbench 2, which has a positioning effect and improves the accuracy of the test results. The shape of the positioning block 13 is set to L-shaped, which adapts to the shape of the circuit board.

[0035] Working principle: When in use, the circuit board is placed on the workbench 2 and pushed to the center above the workbench 2 by the positioning block 13. Then the power of the electric cylinder 4 is started. The electric cylinder 4 works to make the top plate 5 move downward. The displacement of the top plate 5 drives the connecting rod 1 6 and the connecting rod 2 7 to move downward together, and first contacts the top of the circuit board through the rubber column 9 under the connecting rod 2 7. The top plate 5 continues to move downward, so that the connecting rod 1 6 and the connecting rod 2 7 rotate with each other, and exerts a reaction force on the circuit board at the bottom of the rubber column 9 through the compression spring 1 8, thereby pressing the circuit board to the top of the workbench 2, improving the stability of the circuit board during testing, and at the same time, by setting the spring 1 8, the possibility of excessive pressing force on the circuit board and thus causing damage to the circuit board can be reduced.

[0036] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An auxiliary fixture for circuit board testing, comprising a base plate (1), characterized in that: The top of the base plate (1) is fixedly connected to a workbench (2), a positioning mechanism is provided inside the workbench (2), the top of the base plate (1) is fixedly connected to a support frame (3), a driving mechanism is provided on the top of the support frame (3), a top plate (5) is provided inside the support frame (3), a clamping mechanism is provided at the bottom of the top plate (5), the clamping mechanism comprises a connecting rod (6), the connecting rod (6) is hinged to the bottom of the base plate (1), the end of the connecting rod (6) away from the top plate (5) is hinged to the connecting rod (7), the connecting rod (6) and the connecting rod (7) are elastically connected by a spring (8), the bottom of the connecting rod (7) is fixedly connected to a rubber column (9), and a limiting mechanism is provided on the right side of the connecting rod (7).

2. The auxiliary fixture for circuit board testing according to claim 1, characterized in that: The driving mechanism comprises an electric cylinder (4), which is fixedly mounted on the top of the support frame (3), and the bottom of the output shaft of the electric cylinder (4) is fixedly connected to the top of the top plate (5).

3. The auxiliary fixture for circuit board testing according to claim 1, characterized in that: A test module (16) is fixedly connected to the bottom of the top plate (5).

4. The auxiliary fixture for circuit board testing according to claim 1, characterized in that: The connecting rod 1 (6) and the connecting rod 2 (7) are both arranged in an inclined state, and the connecting rod 1 (6) and the connecting rod 2 (7) form a V shape.

5. The auxiliary fixture for circuit board testing according to claim 1, characterized in that: The limiting mechanism comprises a limiting plate (10) and a limiting column (11), wherein the limiting plate (10) is fixedly mounted on the surface of the second connecting rod (7), and the limiting column (11) is fixedly mounted on the surface of the first connecting rod (6), and a limiting groove (12) is provided on the inner wall of the limiting plate (10).

6. The auxiliary fixture for circuit board testing according to claim 5, characterized in that: The limiting groove (12) is configured to be arc-shaped, and the limiting column (11) slides on the inner wall of the limiting groove (12).

7. The auxiliary fixture for circuit board testing according to claim 1, characterized in that: The positioning mechanism includes a positioning block (13), a slide groove (14) is provided on the top of the workbench (2), the positioning block (13) is slidably mounted on the inner wall of the slide groove (14), and the positioning block (13) is elastically connected to the inner wall of the slide groove (14) through a second spring (15).

8. The auxiliary fixture for circuit board testing according to claim 7, characterized in that: The number of the positioning blocks (13) is set to be multiple, and the multiple positioning blocks (13) are symmetrically arranged on the top of the workbench (2), and the shape of the positioning blocks (13) is set to be L-shaped.

Images