CN214750466U

CN214750466U - Steady flow test probe

Info

Publication number: CN214750466U
Application number: CN202120467699.8U
Authority: CN
Inventors: 井高飞; 付盼红; 申啸
Original assignee: Weinan Hi Tech Zone Wood King Technology Co Ltd
Current assignee: Weinan Muwang Intelligent Technology Co ltd
Priority date: 2021-03-04
Filing date: 2021-03-04
Publication date: 2021-11-16
Anticipated expiration: 2031-03-04

Abstract

The utility model discloses a stationary flow test probe, including both ends open-ended needle tubing, be equipped with the spring in the needle tubing, cup jointed the needle bar in the spring, the needle bar is located the upper end of needle tubing, and the lower extreme of needle tubing is provided with the syringe needle, and the afterbody of syringe needle is provided with the afterbody cavity. The steady flow test probe of the utility model can limit the maximum stroke of the needle bar by arranging the tail cavity at the tail part of the needle head, and when the tail part of the needle head and the stroke of the needle bar are maximum, the transmission data can be stably transmitted in a fastest way, thereby improving the transmission speed; the extension part of the needle rod is sleeved in the spring and assembled with the spring, and the purpose of stable transmission is achieved in order to control the swing of the spring in the working process.

Description

Steady flow test probe

Technical Field

The utility model belongs to the technical field of the test part, specifically speaking relates to a stationary flow 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 double-head double-action and double-head single-action of the probe in the current online test equipment have higher and higher requirements on the test probe along with the continuous improvement of the existing test equipment technology, and the existing test probe has low transmission stability and low transmission speed.

Disclosure of Invention

The utility model aims at providing a stationary flow test probe to solve the problem that transmission stability is low, transmission speed is slow in the testing process.

In order to solve the technical problem, the utility model discloses a stationary flow test probe, including both ends open-ended needle tubing, be equipped with the spring in the needle tubing, cup jointed the needle bar in the spring, the needle bar is located the upper end of needle tubing, and the lower extreme of needle tubing is provided with the syringe needle, and the afterbody of syringe needle is provided with the afterbody cavity, and the afterbody cavity is used for restricting the working stroke of needle bar.

Furthermore, the needle rod comprises an extension part and an end part, the extension part is sleeved in the spring, and the end part is positioned outside the needle tube.

Further, the tail part of the needle head is in interference fit with the inner wall of the needle tube.

Further, the tail of the needle contacts the spring.

Further, the extension of the needle shaft can extend into the tail cavity.

Compared with the prior art, the utility model discloses can obtain including following technological effect:

1) the utility model discloses stationary flow test probe through set up the afterbody cavity at the syringe needle afterbody, can restrict the maximum stroke of needle bar, and when syringe needle afterbody and needle bar stroke were the biggest, transmission data can be with fastest mode steady transmission, improve transmission speed.

2) The utility model discloses stationary flow test probe, the extension of needle bar are deepened in the spring, with the spring equipment, are doing the swing of work in order to control the spring, reach the purpose of steady transmission.

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 an exploded view of the current stabilizing test probe of the present invention;

FIG. 2 is a schematic view of an assembly structure of the current stabilizing test probe of the present invention;

fig. 3 is a cross-sectional view of the current stabilization test probe of the present invention.

In the figure, 1, a needle tube, 2, a spring, 3, a needle rod, 301, an extension part, 302, an end part, 4, a needle head, 5 and a tail cavity.

Detailed Description

The following embodiments will be described in detail with reference to the accompanying drawings, so that how to implement the technical means of the present invention to solve the technical problems and achieve the technical effects can be fully understood and implemented.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

The utility model discloses a stationary flow test probe, the structure is as shown in figure 1, 2 and 3, including both ends open-ended needle tubing 1, be equipped with spring 2 in the needle tubing 1, has cup jointed needle bar 3 in spring 2, and needle bar 3 is located the upper end of needle tubing 1, and the lower extreme of needle tubing 1 is provided with syringe needle 4, and the afterbody of syringe needle 4 is provided with afterbody cavity 5, and afterbody cavity 5 is used for restricting the working stroke of needle bar 3.

The utility model discloses stationary flow test probe through set up afterbody cavity 5 at 4 afterbody of syringe needle, can restrict the maximum stroke of needle bar 3, and when 4 afterbody of syringe needle and 3 strokes of needle bar were the biggest, transmission data can be with the fastest mode steady transmission, improve transmission speed.

The needle rod 3 comprises an extension part 301 and an end part 302, the extension part 301 is sleeved in the spring 2, and the end part 302 is positioned outside the needle tube 1. The extension 301 of the needle bar 3 extends into the spring 2 and is assembled with the spring 2 in order to control the oscillation of the spring 2 during the operation and to achieve a stable transport.

The tail part of the needle head 4 is in interference fit with the inner wall of the needle tube 1, so that better assembly is achieved, and falling off is prevented.

The needle 4 is in contact at its rear with the spring 2, and the extension of the shank 3 can extend into the rear cavity 5. The working stroke ends when the extension 301 of the shank 3 is in full contact with the bottom of the tail cavity 5 of the needle 4.

The utility model discloses a principle of operation of kind of stationary flow test probe:

when the printed circuit board needs to be tested, the steady flow test probe of the utility model is utilized to test, the extension part 301 of the needle bar 3 is sleeved in the spring 2, and the transmission can be stabilized; the tail part of the needle head 4 is provided with a tail cavity 5, when the needle rod 3 is pressed down, the bottom of the tail cavity 5 is completely contacted with the extension part 301 of the needle rod 3, the stroke is finished, when the tail part of the needle head 4 and the needle rod 3 have the maximum stroke, the transmission data can be stably transmitted in the fastest mode, and the transmission speed is improved. The problems of low transmission stability and low transmission speed of the existing probe in the test process are solved.

While the foregoing description shows 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 is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a stationary flow test probe, its characterized in that, includes both ends open-ended needle tubing, be equipped with the spring in the needle tubing, the needle bar has cup jointed in the spring, the needle bar is located the upper end of needle tubing, the lower extreme of needle tubing is provided with the syringe needle, the afterbody of syringe needle is provided with the afterbody cavity, the afterbody cavity is used for the restriction the working stroke of needle bar.

2. The flow stabilizing test probe of claim 1, wherein the needle shaft includes an extension that is sleeved within the spring and an end that is located outside the needle cannula.

3. The flow stabilizing test probe of claim 1, wherein the tail of the tip is an interference fit with the interior wall of the needle cannula.

4. The flow stabilizing test probe of claim 1, wherein the tail of the tip contacts the spring.

5. The flow stabilizing test probe of claim 2, wherein the extension of the needle shaft is extendable into the tail cavity.