CN114778904A

CN114778904A - Double-end single-action probe

Info

Publication number: CN114778904A
Application number: CN202210375668.9A
Authority: CN
Inventors: 丁崇亮; 张小英; 申啸
Original assignee: Weinan Muwang Intelligent Technology Co ltd
Current assignee: Weinan Muwang Intelligent Technology Co ltd
Priority date: 2022-04-11
Filing date: 2022-04-11
Publication date: 2022-07-22

Abstract

The invention discloses a double-head single-action probe which comprises a needle tube, wherein an elastic part is arranged in the needle tube, a first needle head is fixed at one end of the needle tube, a second needle head is arranged at the other end of the needle tube in a sliding mode, and the elastic part is pressed between the first needle head and the second needle head. This double-end single action probe solves current double-end double action probe during operation, and two syringe needles are along with the swing of spring and the great influence in magnetic field, and then influence the effect of final test.

Description

Double-end single-action probe

Technical Field

The invention belongs to the technical field of test probes, and particularly relates to a double-head single-action probe.

Background

The BGA test probe is a high-end electronic element, is a precision probe which is widely applied to testing PCB, FPC and the like and plays a role in connection, and is widely applied to the technical fields of mobile phones, automobiles, medical treatment, aerospace, aviation and the like at present.

Present test probe has the syringe needle by needle axle (the tip design of needle axle), needle tubing and spring constitution, the needle axle, the spring is located the needle tubing intracavity, it is fixed through accurate point fourth of the twelve earthly branches technique, make the needle tubing, the needle axle, the spring becomes a holistic structure, because we live in a big magnetic field, the probe can receive the influence in magnetic field when pushing down, BGA test probe size is minimum only 0.18mm, generally all be double-end double-acting probe, the event can receive the swing of spring and the great influence in magnetic field at two syringe needles of during operation, and then influence final test effect.

Disclosure of Invention

The invention aims to provide a double-head single-action probe, which solves the problem that when the conventional double-head double-action probe works, two needle heads are influenced along with the swinging of a spring and the larger influence of a magnetic field, so that the final test effect is influenced.

In order to achieve the above object, the first technical solution adopted by the present invention is: the double-head single-action probe comprises a needle tube, wherein an elastic part is arranged in the needle tube, a first needle head is fixed at one end of the needle tube, a second needle head is arranged at the other end of the needle tube in a sliding mode, and the elastic part is arranged between the first needle head and the second needle head in a butting mode.

As a preferred technical scheme of the present invention, an annular groove is provided on an outer wall of a tail portion of the first needle, and a fixing point is provided on an outer wall of the needle tube.

As a preferable technical solution of the present invention, a reduced opening is formed at one end of the needle tube, and the caliber of the reduced opening is smaller than the outer diameter of the tail part of the second needle and not smaller than the outer diameter of the end part of the second needle.

As a preferable aspect of the present invention, the spring is a compression spring.

As a preferred technical scheme of the present invention, a conical surface is provided at the tail of the second needle, and one end of the spring is sleeved on the conical surface.

The beneficial effects of the invention are: according to the invention, the double-head single-action probe is used, the needle head at one end and the needle tube are fixed to form an integral structural steel, and the spring and the other needle head are continuously assembled, so that only one needle head is influenced by the swinging of the spring and the magnetic field during working, the influences of different swinging of the needle heads at the two ends in the same direction and the opposite direction and the magnetic field are greatly reduced, the misdetection rate is further reduced, and the accuracy of a test result is finally improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural view of a double-ended single action probe according to the present invention;

fig. 2 is a schematic diagram of the structure of a conventional double-ended double-action probe.

In the figure: 1. the needle comprises a first needle head, 2 fixed points, 3 needle tubes, 4 second needle heads, 5 springs and 6 annular grooves.

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 functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention and are not to be construed as limiting the present invention.

In the description of the present invention, if there are first and second described only for the purpose of distinguishing technical features, it is not understood that relative importance is indicated or implied or that the number of indicated technical features or the precedence of the indicated technical features is implicitly indicated or implied.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

As shown in figure 1, the double-head single-action probe comprises a needle tube 3, wherein an elastic part 5 is arranged in the needle tube 3, a first needle head 1 is fixed at one end of the needle tube 3, a second needle head 4 is arranged at the other end of the needle tube 3 in a sliding mode, and the elastic part 5 is pressed between the first needle head 1 and the second needle head 4.

With reference to fig. 2, the needle tube 3 is a tube with openings at both ends, a cavity structure is formed at the middle part, the tails of the first needle head 1 and the second needle head are located inside the cavity of the needle tube 3, the spring 5 is completely arranged inside the cavity of the needle tube, the first needle head 1 and the needle tube 3 are fixed through a precise fixing and riveting mode, so that the first needle head 1 and the needle tube 3 cannot move up and down and rotate around, and the first needle head 1 and the needle tube 3 form an integral component. Riveting through accurate riveting technique between second syringe needle 4 and the needle tubing 3, second syringe needle 4 can be from top to bottom moved in cluster, week rotates in needle tubing 3, because do not have from top to bottom moved in cluster and week rotation between first syringe needle 1 and the needle tubing 3, so in use here can not produce beat induction signal, can move about from top to bottom between second syringe needle 4 and the needle tubing 3, only there can be beat induction signal here.

As shown in figure 1, in the double-head single-action probe of the invention, an annular groove 6 is arranged on the outer wall of the tail part of a first needle head 1, and a fixed point position 2 is arranged on the outer wall of a needle tube 3.

Fixed point fourth of twelve earthly branches processing is carried out to 2 departments of fixed point on the outer wall of needle tubing 3, can impress the outer wall of needle tubing 3 towards annular groove 6 on the first syringe needle 1 to realize stable fixed connection.

As shown in fig. 1, in the double-ended single action probe of the present invention, a reduced opening is formed at one end of the needle tube 3, and the caliber of the reduced opening is smaller than the outer diameter of the tail of the second needle 4 and not smaller than the outer diameter of the end of the second needle 4.

The other end of the needle tube 3 is riveted through a precision riveting technology for necking, the tail part of the second needle head 4 can be limited in the needle tube 3, and the second needle head 4 can move up and down and rotate around in the needle tube 3.

In a double-ended single action probe of the present invention, as shown in fig. 1, the spring 5 is a compression spring.

The spring 5 is preferably a compression spring, which ensures that the spring is compressed under force to generate sufficient elastic force to achieve elastic retraction of the second needle 4.

As shown in fig. 1, in the double-ended single-action probe of the present invention, the tail of the second needle 4 is provided with a conical surface, and one end of the spring 5 is sleeved on the conical surface.

The tail part of the second needle head 4 is designed into a conical surface, so that one end of the spring 5 is sleeved on the conical surface and can be in good contact with the second needle head, stable transmission of signals is ensured, and the monostability and accuracy of a test result are further improved.

Therefore, compared with the prior art, the invention uses the double-head single-action probe to fix the needle head at one end with the needle tube to form an integral structural steel, and the spring and the other needle head are continuously assembled, so that only one needle head is influenced by the swing of the spring and the magnetic field during working, the influences of different swings of the needle heads at the two ends in the same direction and the opposite direction and the magnetic field are greatly reduced, the error rate is reduced, and the accuracy of the test result is finally improved.

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 double-end single action probe, its characterized in that, includes needle tubing (3), be provided with elastic component (5) in needle tubing (3), the one end of needle tubing (3) is fixed with first syringe needle (1), and the other end of needle tubing (3) slides and is provided with second syringe needle (4), elastic component (5) mortgage is between first syringe needle (1) and second syringe needle (4).

2. The double-ended single-action probe according to claim 1, wherein an annular groove (6) is formed in the outer wall of the tail portion of the first needle (1), and a fixed point position (2) is formed in the outer wall of the needle tube (3).

3. The double-ended single-action probe according to claim 2, wherein one end of the needle tube (3) is provided with a reduced mouth, and the caliber of the reduced mouth is smaller than the outer diameter of the tail part of the second needle head (4) and is not smaller than the outer diameter of the end part of the second needle head (4).

4. A double-ended single-action probe according to claim 3, wherein the spring (5) is a compression spring.

5. The double-ended single-action probe according to claim 4, wherein the tail of the second needle (4) is provided with a conical surface, and one end of the spring (5) is sleeved on the conical surface.