CN219417571U

CN219417571U - ICT test fixture with spacing post

Info

Publication number: CN219417571U
Application number: CN202223158792.4U
Authority: CN
Inventors: 温坤龙; 付成; 吴敦建
Original assignee: Kunshan Kangtaida Electronic Technology Co ltd
Current assignee: Kunshan Kangtaida Electronic Technology Co ltd
Priority date: 2022-11-28
Filing date: 2022-11-28
Publication date: 2023-07-25
Anticipated expiration: 2032-11-28

Abstract

The utility model discloses an ICT test fixture with a limit post, which comprises a needle plate, wherein an outer cylinder probe is arranged on the upper surface of the needle plate, the outer cylinder probe is connected with an upper probe in parallel, the upper probe is inserted into the outer cylinder probe from top to bottom, an elastic piece is connected between the upper probe and the bottom surface of the outer cylinder probe, the lower end of the upper probe is fixedly connected with a sliding block, and the sliding block can slide up and down in the outer cylinder probe. The upper probe and the outer cylinder probe are mutually connected in parallel and can be independently detected, when the small holes of the circuit board are detected, the descending small holes can downwards extrude the elastic piece, so that the condition that the circuit board can be continuously descended to cause the pressure loss of the upper probe is avoided, the upper probe is in a detection state, when the circuit board is a large hole, the large hole on the continuously descending circuit board cannot contact the upper probe, the large hole continuously descends, the large hole contacts the outer cylinder probe, the outer cylinder probe can conveniently detect the small hole, and the large hole and the small hole can be detected.

Description

ICT test fixture with spacing post

Technical Field

The utility model relates to the technical field of test jigs, in particular to an ICT test jig with a limiting column.

Background

The test mainly utilizes the test probes to contact the test points on the main board to detect the open circuit and the short circuit of the circuit board and the welding condition of elements, the ICT test is divided into open circuit test, short circuit test, resistance test, capacitance test, diode test, triode test, field effect tube test, missing installation of other general or special components such as IC pin test, incorrect installation, parameter value deviation, welding spot continuous welding, circuit board open circuit and other faults, and the fault is in which component or in which test point the open circuit is located, and the user is informed of the fault, so that the welding test of the component has higher identification capability.

An ICT test fixture with a limit post is proposed in the patent with application number CN201020624107.0, which can realize a protection function when the positioning hole of the printed circuit board is smaller than the standard parameter, so as to avoid the printed circuit board from being crushed; however, when the positioning hole is larger than the standard parameter, it is difficult to realize detection.

Disclosure of Invention

The utility model aims to provide an ICT test fixture with a limiting column, which is used for solving the problem that detection is difficult to realize when a positioning hole is larger than a standard parameter in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the ICT test fixture with the limit posts comprises a needle plate, wherein an outer cylinder probe is mounted on the upper surface of the needle plate, the outer cylinder probe is connected with an upper probe in parallel, the upper probe is inserted into the outer cylinder probe from top to bottom, and an elastic piece is connected between the upper probe and the bottom surface of the outer cylinder probe.

Preferably, the lower end of the upper probe is fixedly connected with a sliding block, and the sliding block can slide up and down in the outer cylinder probe.

Preferably, the elastic piece is a spring, the upper end of the spring is fixedly connected to the lower surface of the sliding block, and the lower end of the spring is fixedly connected to the bottom surface of the outer cylinder probe.

Preferably, the elastic piece is a V-shaped elastic piece, one end of the pointed cone part is fixedly connected to the lower surface of the sliding block, and the other end of the V-shaped elastic piece is fixedly connected to the bottom surface of the outer cylinder probe.

Preferably, the upper end of the upper probe is provided with a pointed cone.

Compared with the prior art, the utility model has the beneficial effects that: the upper probe and the outer cylinder probe are mutually connected in parallel, so that the upper probe and the outer cylinder probe can be independently detected, when the small holes of the circuit board are detected, the descending small holes can downwards extrude the elastic piece, so that the condition that the circuit board can be continuously descended to cause the pressure loss of the upper probe is avoided, the upper probe is in a detection state, when the circuit board is a large hole, the large hole on the continuously descending circuit board cannot contact the upper probe, and the large hole continuously descends, so that the large hole contacts the outer cylinder probe, the outer cylinder probe can conveniently detect the small hole, and the large hole and the small hole can be detected.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic diagram of the structure of the large hole circuit board test of the present utility model;

FIG. 3 is a schematic diagram of a small hole circuit board test structure according to the present utility model;

FIG. 4 is a schematic view of the installation of the V-shaped spring plate of the present utility model;

FIG. 5 is a schematic diagram of the structure of the upper probe and the outer barrel probe of the present utility model.

In the figure: 1. a needle plate; 2. an outer barrel probe; 3. a slide block; 4. a pointed cone; 5. a probe is arranged; 6. a spring; 7. a circuit board; 8. a large hole; 9. a small hole; 10. v-shaped spring plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 and 5, in the embodiment of the present utility model, an ICT test fixture with a limit post includes a needle plate 1, an outer cylinder probe 2 is mounted on an upper surface of the needle plate 1, an upper probe 5 is inserted into an inner part of the outer cylinder probe 2 from top to bottom, and the outer cylinder probe 2 and the upper probe 5 should be connected in parallel, so that both can perform separate detection, that is, only one of them is in a detection state when in use;

referring to fig. 1 and 3, an elastic member is connected between the upper probe 5 and the bottom surface of the outer barrel probe 2, and when the small hole 9 of the circuit board 7 is detected, the descending small hole 9 can press the elastic member downwards, so that the situation that the circuit board 7 is continuously descended to cause the pressure loss of the upper probe 5 is avoided, and the upper probe 5 is in a detection state;

in order to avoid the mutual conduction of the two, an insulating coating (not shown) should be coated on the inner surface of the outer barrel probe 2;

as shown in fig. 1 and 2, when the circuit board 7 is the large hole 8, the large hole 8 on the circuit board 7 which is continuously lowered cannot contact the upper probe 5, and is continuously lowered, so that the large hole 8 contacts the outer barrel probe 2, so that the outer barrel probe 2 can detect the large hole;

in order to realize that when the circuit board 7 is the small hole 9, the upper probe 5 can be steadily shortened, the sliding block 3 is fixedly connected at the lower end of the upper probe 5, and the sliding block 3 can slide up and down in the outer cylinder probe 2, namely, the sliding block 3 can slide when the upper probe 5 is shortened, and the sliding block 3 can avoid the situation that the upper probe 5 is separated from the large hole 8 due to excessive upward movement;

referring to fig. 1, the elastic member is a spring 6, the upper end of the spring 6 is fixedly connected to the lower surface of the slider 3, and the lower end of the spring 6 is fixedly connected to the bottom surface of the outer cylinder probe 2;

referring to fig. 4, the elastic member is a V-shaped elastic sheet 10, one end of the pointed cone 4 is fixedly connected to the lower surface of the slider 3, and the other end of the V-shaped elastic sheet 10 is fixedly connected to the bottom surface of the outer barrel probe 2;

in the above device, the upper end of the upper probe 5 is provided with a pointed cone 4 to facilitate insertion of the upper probe 5 into the hole of the circuit board.

The working principle and the using flow of the utility model are as follows: when the device is used, the holes of the circuit board are aligned with the upper probes 5, when the holes 9 of the circuit board 7 are detected, the descending holes 9 can downwards squeeze the elastic pieces, so that the situation that the circuit board 7 can be continuously descended to cause the pressure loss of the upper probes 5 is avoided, the upper probes 5 are in a detection state, when the circuit board 7 is the large holes 8, the large holes 8 on the continuously descending circuit board 7 cannot contact the upper probes 5, the large holes 8 continuously descend, and the large holes 8 contact the outer barrel probes 2, so that the outer barrel probes 2 can detect the pressure loss.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. ICT test fixture with spacing post, including faller (1), its characterized in that: the needle plate is characterized in that an outer cylinder probe (2) is mounted on the upper surface of the needle plate (1), an upper probe (5) is inserted into the outer cylinder probe (2) from top to bottom, the outer cylinder probe (2) is connected with the upper probe (5) in parallel, an elastic piece is connected between the upper probe (5) and the bottom surface of the outer cylinder probe (2), and a pointed cone portion (4) is arranged at the upper end of the upper probe (5).

2. The ICT test fixture with limit posts of claim 1, wherein: the lower end of the upper probe (5) is fixedly connected with a sliding block (3), and the sliding block (3) can slide up and down in the outer cylinder probe (2).

3. The ICT test fixture with limit posts of claim 2, wherein: the elastic piece is a spring (6), the upper end of the spring (6) is fixedly connected to the lower surface of the sliding block (3), and the lower end of the spring (6) is fixedly connected to the bottom surface of the outer cylinder probe (2).

4. The ICT test fixture with limit posts of claim 1, wherein: the elastic piece is a V-shaped elastic piece (10), one end of the pointed cone part (4) is fixedly connected to the lower surface of the sliding block (3), and the other end of the V-shaped elastic piece (10) is fixedly connected to the bottom surface of the outer barrel probe (2).