CN218995459U

CN218995459U - Elastic pressing rod

Info

Publication number: CN218995459U
Application number: CN202223303006.5U
Authority: CN
Inventors: 彭发根
Original assignee: Shenzhen Totest Electronic Co ltd
Current assignee: Shenzhen Totest Electronic Co ltd
Priority date: 2022-12-08
Filing date: 2022-12-08
Publication date: 2023-05-09
Anticipated expiration: 2032-12-08

Abstract

The utility model provides an elastic pressing rod, which comprises an elastic pressing rod mechanism, a pressing rod mechanism and a pressing rod mechanism, wherein the elastic pressing rod mechanism comprises an antistatic black POM shaft head, a thick shaft core, a thin shaft core, a spring and a brass sleeve; one end of the thick shaft core is integrally formed at one end of the thin shaft core, and the spring is sleeved on the outer side wall of the thin shaft core. According to the utility model, the elastic pressing rod mechanism is vertically arranged in the upper needle plate of the test fixture, the antistatic black POM shaft head is firstly contacted with the PCBA component during the test, the PCBA component with uneven height is flattened and fixed under the pressure of the spring, when the fixture continues to press downwards and is higher than the force of the spring, the shaft core can pass through the brass sleeve to effectively prevent overvoltage, and the head of the thick shaft core can prevent the static electricity from being led into the brass sleeve to interfere with the test fixture by using the antistatic black POM shaft head, so that the test fixture is influenced.

Description

Elastic pressing rod

Technical Field

The utility model relates to an anti-static pressing rod, in particular to an elastic anti-static pressing rod, and belongs to the technical field of testing jig pressing rods.

Background

PCBA is firstly loaded on a PCB through SMT (surface mount technology) and then through the manufacturing process of DIP (dual in-line package technology) plug-in, and is widely used before the industrial age, and is a computer and an embedded system;

after the PCBA is generated, the circuit function of the PCBA is generally required to be tested to judge whether the PCBA is normal, and before a test fixture contacts the PCBA component through an upper die probe, the PCBA component is required to be flattened through a pressing rod, the traditional pressing rod has no buffer space and is directly and rigidly contacted with the PCBA component, so that the PCBA component is easy to crush, and the detection accuracy of the probe contacting the PCBA component is reduced; for this purpose, elastic press bars are proposed.

Disclosure of Invention

In view of the foregoing, it is desirable to provide an elastic pressing bar to solve or alleviate the technical problems in the prior art, and at least provide a beneficial choice.

The technical scheme of the embodiment of the utility model is realized as follows: an elastic pressing rod comprises

The testing mechanism comprises an upper needle plate;

the elastic rod pressing mechanism comprises an antistatic black POM shaft head, a thick shaft core, a thin shaft core, a spring and a brass sleeve;

one end of the thick shaft core is integrally formed at one end of the thin shaft core, the spring is sleeved on the outer side wall of the thin shaft core, the thin shaft core and the spring sleeved on the outer side wall of the thin shaft core are arranged in the brass sleeve, a shaft hole is formed in one end, far away from the thin shaft core, of the thick shaft core, and the antistatic black POM shaft head is in threaded connection with the thick shaft core through the shaft hole;

the elastic rod pressing mechanism penetrates through and is fixedly connected to one side of the top of the upper needle plate.

Further preferably, a screw hole is formed in the end portion, located inside the brass bush, of the thin shaft core.

Further preferably, a through hole symmetrical to the screw hole is formed in the bottom end of the brass sleeve.

Further preferably, a screw is arranged at the bottom end of the brass sleeve, and the screw penetrates through a through hole at the bottom end of the brass sleeve and is in threaded connection with a screw hole at the bottom end of the thin shaft core.

Further preferably, the test mechanism further comprises an upper die probe, a carrier plate, a PCBA component, a PCBA circuit board and two lower die probes;

the carrier plate is located the bottom of going up the faller, PCBA circuit board install in the top of carrier plate.

Further preferably, the upper die probe is installed on one side of the top of the upper needle plate in a penetrating manner, and the needle head of the upper die probe is contacted with the PCBA circuit board.

Further preferably, the PCBA component is disposed at one side of the top of the PCBA circuit board and located below the elastic pressing rod mechanism.

Further preferably, the tips of the two lower mold probes penetrate through the bottom of the carrier plate and contact with the bottom of the PCBA circuit board.

By adopting the technical scheme, the embodiment of the utility model has the following advantages:

according to the utility model, the elastic pressing rod mechanism is vertically arranged in the upper needle plate of the test fixture, the antistatic black POM shaft head is firstly contacted with the PCBA component during the test, the PCBA component with uneven height is flattened and fixed under the pressure of the spring, when the fixture continues to press downwards and is higher than the force of the spring, the shaft core can pass through the brass sleeve to effectively prevent overvoltage, and the head of the thick shaft core can prevent the static electricity from being led into the brass sleeve to interfere with the test fixture by using the antistatic black POM shaft head, so that the test fixture is influenced.

The foregoing summary is for the purpose of the specification only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present utility model will become apparent by reference to the drawings and the following detailed description.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the technical descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a split structure diagram of an elastic rod pressing mechanism of the present utility model;

FIG. 2 is a diagram showing the installation structure of the test mechanism and the elastic pressing rod mechanism of the present utility model;

FIG. 3 is a block diagram of an elastic rod pressing mechanism according to the present utility model;

FIG. 4 is a cross-sectional view of the elastic pressing bar mechanism of the present utility model.

Reference numerals: 10. a testing mechanism; 11. an upper needle plate; 12. an upper die probe; 13. a carrier plate; 14. PCBA components; 15. PCBA circuit board; 16. a lower die probe; 20. an elastic rod pressing mechanism; 21. antistatic black POM shaft head; 22. a thick shaft core; 23. a thin shaft core; 24. a spring; 25. brass sheath; 26. a screw; 27. a shaft hole; 28. screw holes; 29. and a through hole.

Detailed Description

Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in various different ways without departing from the spirit or scope of the present utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive.

Embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

As shown in FIGS. 1-4, embodiments of the present utility model provide an elastic press bar comprising

A testing mechanism 10, the testing mechanism 10 comprising an upper needle plate 11;

the elastic rod pressing mechanism 20 comprises an antistatic black POM shaft head 21, a thick shaft core 22, a thin shaft core 23, a spring 24 and a brass sleeve 25;

one end of the thick shaft core 22 is integrally formed at one end of the thin shaft core 23, the spring 24 is sleeved on the outer side wall of the thin shaft core 23, the thin shaft core 23 and the spring 24 sleeved on the outer side wall of the thin shaft core 23 are arranged in the brass sleeve 25, the shaft hole 27 is formed at one end of the thick shaft core 22 far away from the thin shaft core 23, and the antistatic black POM shaft head 21 is in threaded connection with the thick shaft core 22 through the shaft hole 27;

the elastic rod pressing mechanism 20 penetrates and is fixedly connected to one side of the top of the upper needle plate 11.

In one embodiment, the end of the thin shaft core 23 located inside the brass sheath 25 is provided with a screw hole 28, the bottom end of the brass sheath 25 is provided with a through hole 29 symmetrical to the screw hole 28, the bottom end of the brass sheath 25 is provided with a screw 26, the screw 26 penetrates through the through hole 29 at the bottom end of the brass sheath 25 and is in threaded connection with the screw hole 28 at the bottom end of the thin shaft core 23, and the tail end of the brass sheath 25 and the thin shaft core 23 are fixed through the screw 26.

In one embodiment, the test mechanism 10 further includes an upper die probe 12, a carrier plate 13, a PCBA component 14, a PCBA circuit board 15, and two lower die probes 16;

the carrier plate 13 is located the bottom of going up faller 11, and PCBA circuit board 15 installs in the top of carrier plate 13, goes up mould probe 12 and runs through and install in the top one side of going up faller 11, and the syringe needle of going up mould probe 12 contacts with PCBA circuit board 15, and PCBA components and parts 14 set up in the top one side of PCBA circuit board 15 and are located the below of elasticity bar pressing mechanism 20, and the syringe needle of two lower mould probes 16 runs through the bottom of carrier plate 13 and contacts with the bottom of PCBA circuit board 15.

The utility model works when in work: the elastic rod pressing mechanism 20 is formed by assembling an anti-static black POM shaft head 21, a thick shaft core 22, a thin shaft core 23, a spring 24, a brass sleeve 25 and a screw 26, wherein the spring 24 passes through the outer part of the thin shaft core 23 and is then arranged in the brass sleeve 25, and then the spring 24 is fixed at the tail end of the brass sleeve 25 by the screw 26, the head thread of the thick shaft core 22 is provided with the anti-static black POM shaft head 21, so that an elastic anti-static rod with a buffer space is formed, and a plate can be pressed flat and parts can be prevented from being crushed;

through vertically loading the elastic pressing rod mechanism 20 into the upper needle plate 11 of the test fixture, the antistatic black POM shaft head 21 is firstly contacted with the PCBA component 14 during the test, the PCBA component 14 with uneven height is flattened and fixed under the pressure of the spring 24, when the fixture continues to press downwards and is stronger than the force of the spring 24, the thick shaft core 22 and the thin shaft core 23 which are integrally formed penetrate through the brass sheath 25 effectively to prevent overpressure, the head of the thick shaft core 22 uses the antistatic black POM shaft head 21 to prevent the static electricity from being introduced into the brass sheath 25 to interfere with the test fixture so as to influence the test, and the PCBA component 14 is flattened and the accuracy of the probe is improved before the upper die probe 12 contacts the PCBA component 14.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that various changes and substitutions are possible within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. An elastic pressing rod is characterized by comprising

A testing mechanism (10), wherein the testing mechanism (10) comprises an upper needle plate (11);

the elastic rod pressing mechanism (20), wherein the elastic rod pressing mechanism (20) comprises an antistatic black POM shaft head (21), a thick shaft core (22), a thin shaft core (23), a spring (24) and a brass sleeve (25);

one end of the thick shaft core (22) is integrally formed at one end of the thin shaft core (23), the spring (24) is sleeved on the outer side wall of the thin shaft core (23), the thin shaft core (23) and the spring (24) sleeved on the outer side wall of the thin shaft core (23) are arranged in the brass sleeve (25), a shaft hole (27) is formed at one end, far away from the thin shaft core (23), of the thick shaft core (22), and the antistatic black POM shaft head (21) is in threaded connection with the thick shaft core (22) through the shaft hole (27);

the elastic rod pressing mechanism (20) penetrates through and is fixedly connected to one side of the top of the upper needle plate (11).

2. The elastic press bar according to claim 1, wherein: the end part of the thin shaft core (23) positioned in the brass sheath (25) is provided with a screw hole (28).

3. The elastic press bar according to claim 2, wherein: and a through hole (29) symmetrical to the screw hole (28) is formed in the bottom end of the brass sleeve (25).

4. A flexible press bar as claimed in claim 3, wherein: the bottom of brass sheath (25) is provided with screw (26), screw (26) run through-hole (29) of brass sheath (25) bottom with screw hole (28) threaded connection of thin axle core (23) bottom.

5. The elastic press bar according to claim 1, wherein: the testing mechanism (10) further comprises an upper die probe (12), a carrier plate (13), PCBA components (14), a PCBA circuit board (15) and two lower die probes (16);

the carrier plate (13) is located at the bottom of the upper needle plate (11), and the PCBA circuit board (15) is mounted at the top of the carrier plate (13).

6. The elastic press bar according to claim 5, wherein: the upper die probe (12) is installed on one side of the top of the upper needle plate (11) in a penetrating mode, and the needle head of the upper die probe (12) is contacted with the PCBA circuit board (15).

7. The elastic press bar according to claim 5, wherein: the PCBA component (14) is arranged on one side of the top of the PCBA circuit board (15) and is positioned below the elastic rod pressing mechanism (20).

8. The elastic press bar according to claim 5, wherein: the needle heads of the two lower die probes (16) penetrate through the bottom of the carrier plate (13) and are in contact with the bottom of the PCBA circuit board (15).