CN204269689U - A manual test fixture for integrated circuits - Google Patents

Abstract

The utility model provides a manual test fixture for integrated circuits, which includes a test bench, a base, a column, a handle, a transmission rod, a universal floating head, a suction head, a connecting block, and a slide rail. The fixing device of the table, the column is vertically fixed on the rear end of the base, the upper part of the column is provided with a protrusion protruding forward, the surface of the column is provided with a slide rail perpendicular to the base, and one end of the handle is provided with a connecting part, the connection part is rotatably connected with the bump, the connection part is rotatably connected with the top end of the transmission rod, the bottom end of the transmission rod is connected with the connection block through the universal floating head, and the connection The rear part of the block is slidingly connected with the slide rail, and the front end of the connecting block is provided with a suction head. The beneficial effect of the utility model is that the verticality of the drop of the suction head can be improved, and the accuracy of the test result can be guaranteed.

Description

A manual test fixture for integrated circuits

technical field

The utility model belongs to the field of test fixtures, in particular to a manual test fixture for integrated circuits.

Background technique

In the process of developing and producing integrated circuit boards, it is necessary to manually test its electrical characteristics. This manual test generally needs to be carried out on a manual test fixture. A test bench is fixed on the base of the manual test fixture, and a test circuit board is fixed on the surface of the test bench. A flexible conductive pad is laid on the surface of the circuit board, the integrated circuit board to be tested is placed on the flexible conductive pad, and the integrated circuit board is pressed on the flexible conductive pad with a suction head. In the existing technology, the handle fixes the integrated circuit board on the flexible conductive pad through the transmission rod and the suction head, but the verticality of the suction head in this structure is poor. If the suction head is not pressed against the center of the integrated circuit board but At the edge, it will cause one end of the integrated circuit board to warp so that it cannot fully contact the flexible conductive pad, and there will be poor verticality of the suction head, which will easily cause poor contact between the integrated circuit board and the test circuit board, and affect the technical problems of the test results.

Contents of the invention

The problem to be solved by the utility model is to provide a test fixture for an integrated circuit board, which is especially suitable for improving the verticality of the suction head falling.

In order to solve the above technical problems, the technical solution adopted by the utility model is: a manual test fixture for integrated circuits, including a test bench, a base, a column, a handle, a transmission rod, a universal floating head, a suction head, a connecting block, and a slide rail, The front end of the base is provided with a fixing device for fixing the test bench, the column is vertically fixed on the rear end of the base, the upper part of the column is provided with a protrusion protruding forward, and the surface of the column is provided with a One end of the handle is provided with a connecting portion, the connecting portion is rotatably connected to the bump, the connecting portion is rotatably connected to the top end of the transmission rod, and the bottom end of the transmission rod is floated through the universal The head is connected with the connection block, the rear part of the connection block is slidably connected with the slide rail, and the front end of the connection block is provided with a suction head.

Further, it also includes a spring, the connecting block is provided with a through hole, the top of the suction head is fixedly connected with a guide rod, the guide rod passes through the spring and protrudes from the through hole, the lower end of the spring and the top of the suction head connection, the top of the spring is connected with the connection block.

Further, a limit block is also included, the limit block is fixed on the lower part of the protrusion, the limit block is provided with a limit hole, and the transmission rod passes through the limit hole.

Further, the fixing device includes a fixing hole and a guide groove, the fixing hole is arranged at the bottom of the guide groove, and the test platform can slide in the guide groove to adjust the relative position of the test platform and the suction head.

The utility model has the advantages and positive effects that: due to the adoption of the above-mentioned technical scheme, the verticality of the suction head can be improved to ensure the accuracy of the test results.

Description of drawings

Fig. 1 is a side view of the utility model.

In the picture:

1. Test bench 2. Base 3. Column

4. Handle 5. Transmission rod 6. Limit block

7. Suction head 8. Spring 9. Bump

10. Connection part 11. Connection block 12. Guide rod

13. Guide groove 14. Universal floating head 15. Slide rail

Detailed ways

As shown in Figure 1, the utility model is a manual test fixture for integrated circuits, including a test bench 1, a base 2, a column 3, a handle 4, a transmission rod 5, a universal floating head 14, a suction head 7, a connecting block 11, a sliding Rail 15, the front end of the base 2 is provided with a fixing device for fixing the test bench 1, the column 3 is vertically fixed on the rear end of the base 2, the upper part of the column 3 is provided with a protrusion 9 protruding forward, and the surface of the column 3 is provided with a 2 slide rail 15, one end of the handle 4 is provided with a connecting portion 10, the connecting portion 10 is rotatably connected to the bump 9, the connecting portion 10 is rotatably connected to the top of the transmission rod 5, and the bottom end of the transmission rod 5 is connected to the connecting block through the universal floating head 14. 11 connection, the rear part of the connecting block 11 is slidingly connected with the slide rail 15, and the front end of the connecting block 11 is provided with a suction head 7; it also includes a spring 8, the connecting block 11 is provided with a through hole, and the top of the suction head 7 is fixedly connected to the guide rod 12, and the guide rod 12 passes through the spring 8 and protrudes from the through hole, the lower end of the spring 8 is connected to the top of the suction head 7, and the top of the spring 8 is connected to the connecting block 11; it also includes a limit block 6, which is fixed on the bottom of the protrusion 9, and The position block 6 is provided with a limit hole, and the transmission rod 5 passes through the limit hole; the fixing device includes a fixing hole and a guide groove 13, the fixing hole is arranged at the bottom of the guide groove 13, and the test bench 1 can slide in the guide groove 13 to adjust the test bench 1 and the relative position of suction head 7.

The working process of this example: turn the handle 4, and the top of the transmission rod 5 that is connected to the handle 4 will move up and down while moving left and right. Since the bottom end of the transmission rod 5 is connected with the connecting block 11 through the universal floating head 14, And the rear part of the connecting block 11 is slidably connected with the slide rail 15, so it can be ensured that the connecting block 11 moves up and down along the slide rail 15 perpendicular to the test bench 1, thereby improving the verticality of the suction head 7 falling; The handle 4, the transmission rod 5, the spring 8, and the suction head 7 are transmitted to the integrated circuit board, and the downward force on the integrated circuit board is equal to the elastic force of the spring 8. Since the coefficient of elasticity of the spring 8 is a fixed value, the compression stroke of the spring 8 is also a fixed value, so it can be concluded that the elastic force of the spring 8 is a fixed value, which can ensure that the downward force of each test is the same; The selection of springs 8 with different elastic coefficients can ensure that the downforce of the manual test is consistent with the downforce of the automatic test, ensuring the consistency of the test results.

An embodiment of the utility model has been described in detail above, but the content is only a preferred embodiment of the utility model, and cannot be considered as limiting the implementation scope of the utility model. All equal changes and improvements made according to the application scope of the utility model should still belong to the scope covered by the patent of the utility model.

Claims (4)

1. A manual test fixture for integrated circuits, characterized in that: it includes a test bench, a base, a column, a handle, a transmission rod, a universal floating head, a suction head, a connecting block, and a slide rail, and the front end of the base is provided with a The fixing device of the above-mentioned test bench, the column is vertically fixed on the rear end of the base, the upper part of the column is provided with a protrusion protruding forward, the surface of the column is provided with a slide rail perpendicular to the base, and one end of the handle is provided There is a connecting part, the connecting part is rotatably connected with the protrusion, the connecting part is rotatably connected with the top end of the transmission rod, and the bottom end of the transmission rod is connected with the connecting block through the universal floating head, so The rear part of the connecting block is slidingly connected with the slide rail, and the front end of the connecting block is provided with a suction head. 2. The integrated circuit manual test fixture according to claim 1, characterized in that: it also includes a spring, the connecting block is provided with a through hole, the tip of the suction head is fixedly connected to a guide rod, and the guide rod passes through the spring and Protruding from the through hole, the lower end of the spring is connected to the top end of the suction head, and the top end of the spring is connected to the connecting block. 3. The integrated circuit manual test fixture according to claim 1, characterized in that: it also includes a limit block, the limit block is fixed on the lower part of the protrusion, and the limit block is provided with a limit hole, the The transmission rod passes through the limiting hole. 4. The integrated circuit manual test fixture according to claim 1, characterized in that: the fixing device includes a fixing hole and a guide groove, the fixing hole is arranged at the bottom of the guide groove, and the test bench can be placed in the guide groove Slide inside to adjust the relative position of the test bench and the suction head.