CN218331691U

CN218331691U - Anti-rotation test probe

Info

Publication number: CN218331691U
Application number: CN202222111719.5U
Authority: CN
Inventors: 丁崇亮; 井高飞
Original assignee: Weinan Muwang Intelligent Technology Co ltd
Current assignee: Weinan Muwang Intelligent Technology Co ltd
Priority date: 2022-08-11
Filing date: 2022-08-11
Publication date: 2023-01-17
Anticipated expiration: 2032-08-11

Abstract

The utility model discloses an prevent rotating test probe, include: the needle tube is provided with a sliding chute on the tube wall; an elastic member disposed within the needle tube; the needle head is telescopically arranged at one end of the needle tube; and the limiting block is arranged on the needle head and is positioned in the sliding groove and matched with the sliding groove. This prevent rotating test probe has solved current test probe in the use, the easy rotatory problem of syringe needle.

Description

Anti-rotation test probe

Technical Field

The utility model belongs to the technical field of the semiconductor detects, concretely relates to prevent rotating test probe.

Background

During the production process of the printed circuit board, an electrical test is performed on the printed circuit board to determine whether electrical parameters (such as resistance, capacitance, or inductance) of each component of the printed circuit board meet the standard requirements.

A common test method of a printed circuit board is to set test points on the printed circuit board, print solder paste on the surfaces of the test points, and directly contact the solder paste portions of the test points with probes through an automated test device or an online test device to obtain related electrical parameters.

The probe head type in the current online test equipment has different requirements according to different test points, such as B type, D type, T type, W type, U type and the like, when the probe head is contacted with the test point in the test process, if the probe head rotates in the test process, the probe head and the test point have insufficient contact to cause unstable test data, high false testing rate and other factors.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an prevent rotating test probe solves current test probe in the use, the easy rotatory problem of syringe needle.

In order to solve the technical problem, the utility model discloses an prevent rotating test probe, include:

the needle tube is provided with a sliding groove on the tube wall;

an elastic member disposed within the needle cannula;

the needle head is arranged at one end of the needle tube in a telescopic manner;

and the limiting block is arranged on the needle head and is positioned in the sliding groove and matched with the sliding groove.

The technical scheme of the utility model, still have following characteristics:

as the utility model discloses technical scheme's further improvement, the spout is the bar hole.

As a further improvement of the technical scheme of the utility model, the stopper is square.

As a further improvement of the technical scheme of the utility model, the elastic component is compression spring.

As a further improvement of the technical scheme of the utility model, be provided with the mounting hole on the syringe needle, the stopper cartridge is in the mounting hole.

As a further improvement of the technical proposal of the utility model, the tail part of the needle head is conical.

Compared with the prior art, the anti-rotation test probe has the advantages that the limiting block is arranged on the needle head, and the limiting block is assembled in the chute of the needle tube and cannot slide or rotate, so that the needle head is ensured not to rotate in the using process, and the problems of unstable test data, high error detection rate and the like caused by insufficient contact between the needle head and the test point are avoided; the anti-rotation test probe is simple in overall structure, easy to manufacture, low in manufacturing cost and good in market popularization and use prospect.

Drawings

The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:

FIG. 1 is a schematic view of an anti-rotation test probe according to the present invention;

fig. 2 is a cross-sectional view of an anti-rotation test probe of the present invention;

fig. 3 is an exploded view of an anti-rotation test probe according to the present invention.

In the figure: 1. the needle tubing, 2 the elastic component, 3 the stopper, 4 the syringe needle.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, if there are first and second descriptions for distinguishing technical features, they are not interpreted as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

As shown in fig. 1 to 3, the utility model discloses an anti-rotation test probe, include:

the needle tube 1 is provided with a sliding chute on the tube wall of the needle tube 1;

the elastic piece 2, the elastic piece 2 is set in the needle tube 1;

the needle head 4 is telescopically arranged at one end of the needle tube 1;

stopper 3, stopper 3 set up on syringe needle 4, and stopper 3 is located the spout and with the spout phase-match.

During assembly, the elastic part 2 is firstly arranged in the needle tube 1, then the needle 4 is arranged at one end of the needle tube 1, a necking is processed at the end part, the tail part of the needle 4 is telescopically limited in the needle tube 1, and the head part of the needle 4 can extend out of the necking due to the fact that the outer diameter size is smaller than the inner diameter of the necking.

When the test device works, the head part of the needle head 4 is contacted with a tested point, and certain pressure is applied to ensure that the elastic part 2 contracts to a certain extent, so that the head part of the needle head 4 is well contacted with the tested point, and the test is finished. In the working process, the limiting block 3 only slides up and down in the sliding groove and cannot rotate left and right, so that the needle 4 cannot rotate in the needle tube 1.

As shown in FIG. 3, in the anti-rotation test probe of the present invention, the sliding groove is preferably a bar-shaped hole, and the limiting block 3 is a square.

After the design, the limiting block 3 is assembled in the sliding groove and cannot rotate, and can only move up and down in the sliding groove.

As shown in fig. 1 to 3, in the anti-rotation test probe of the present invention, the elastic member 2 is a compression spring.

The compression spring can ensure that the elastic force is uniformly acted on the needle head 4, the needle head 4 is ensured not to deviate in the using process, and the connection stability is further ensured.

As shown in figure 3, the utility model discloses an among the anti-rotation test probe, be provided with the mounting hole on syringe needle 4, 3 cartridges of stopper are in the mounting hole.

The limiting block 3 is inserted into the mounting hole, and the assembly is convenient.

As shown in fig. 3, in the anti-rotation test probe of the present invention, the rear portion of the needle 4 is preferably designed to be tapered.

One end of the compression spring is sleeved at the tail part of the needle head 4, so that the elastic force can be ensured to act on the needle head 4 more uniformly.

Therefore, compared with the prior art, the utility model discloses an anti-rotation test probe is provided with the stopper on the syringe needle, and the stopper assembly can not take place to slide in the spout of needle tubing, can not rotate to ensure that the syringe needle can not take place to rotate in the use, avoid syringe needle and test point to take place to contact inadequately, cause test data unstability, the high scheduling problem of misdetection rate.

In addition, the anti-rotation test probe is simple in overall structure, easy to manufacture, low in manufacturing cost and good in market popularization and application prospect.

While the foregoing specification illustrates and describes several preferred embodiments of the invention, it is to be understood, as noted above, that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and from various other combinations, modifications, and environments and is capable of changes within the scope of the invention as expressed herein, commensurate with the above teachings or the skill or knowledge of the relevant art. But variations and modifications which do not depart from the spirit and scope of the invention should be construed as being included in the scope of the appended claims.

Claims

1. An anti-rotation test probe, comprising:

the needle tube (1), the tube wall of the needle tube (1) is provided with a chute;

the elastic piece (2), the said elastic piece (2) is set up in the syringe (1);

the needle head (4), the said needle head (4) is set up in one end of the syringe tube (1) telescopically;

the limiting block (3), the limiting block (3) is arranged on the needle head (4), and the limiting block (3) is located in the sliding groove and matched with the sliding groove.

2. The anti-rotation test probe of claim 1, wherein the sliding groove is a strip-shaped hole.

3. Anti-rotation test probe according to claim 1, characterized in that the stop block (3) is square.

4. Anti-rotation test probe according to claim 1, characterized in that the elastic element (2) is a compression spring.

5. Anti-rotation test probe according to claim 1, characterized in that the needle (4) is provided with a mounting hole, and the stopper (3) is inserted into the mounting hole.

6. Anti-rotation test probe according to claim 1, characterized in that the end of the needle (4) is conical.