CN112147380A

CN112147380A - Spring plate needle

Info

Publication number: CN112147380A
Application number: CN202010916778.2A
Authority: CN
Inventors: 付盼红; 张明海; 申啸
Original assignee: Weinan Hi Tech Zone Wood King Technology Co Ltd
Current assignee: Weinan Hi Tech Zone Wood King Technology Co Ltd
Priority date: 2020-09-03
Filing date: 2020-09-03
Publication date: 2020-12-29

Abstract

The invention discloses a shrapnel needle, which comprises: a needle head; the head end of the elastic connecting part is arranged at the tail end of the needle head in a retractable manner; the head end of the rigid connecting part is arranged at the tail end of the elastic connecting part; the needle tail is arranged at the tail end of the elastic connecting part in a retractable manner. The elastic sheet needle solves the problem that the existing probe is easy to deform to cause poor contact in testing.

Description

Spring plate needle

Technical Field

The invention belongs to the technical field of electronic test equipment, and particularly relates to a shrapnel pin.

Background

Probes are widely used in various fields as a common electronic test tool. For the PCB, after the PCB is provided with the components, the circuits of the components need to be detected by using probes, whether the electronic performance of the components is effectively verified is determined, and the quality of the product is further ensured.

With the development of technology, devices are also increasingly smaller and finer, and probes are also increasingly smaller and smaller in volume along with the development of the devices. The existing probe is mostly a spring probe and mainly formed by assembling a spring needle head and a needle tube, if the force of an operator is too large during use, the needle head, the spring and the needle tube can be seriously deformed, the existing probe cannot be in good contact with a tested component and a PCB (printed circuit board), and then the accuracy of a test result is difficult to ensure, the existing probe can be damaged when the existing probe is serious, and the service life of the probe is greatly shortened.

Disclosure of Invention

The invention aims to provide a spring piece needle, which aims to solve the problem that the existing probe is easy to deform and has poor contact during testing.

In order to solve the above problems, the present invention discloses a shrapnel needle, comprising:

a needle head;

the head end of the elastic connecting part is arranged at the tail end of the needle head in a retractable manner;

the head end of the rigid connecting part is arranged at the tail end of the elastic connecting part;

the needle tail is arranged at the tail end of the elastic connecting part in a retractable manner.

The technical scheme of the invention also has the following characteristics:

further, the elastic connection portion includes:

a first elastic connecting portion;

the second elastic connecting part is the same as the first elastic connecting part in structure, is positioned in the same plane and is symmetrically arranged, wherein the second elastic connecting part is fixedly connected with one end of the first elastic connecting part, and the other end of the second elastic connecting part is distributed with an opening.

Furthermore, first connecting portion contain two first violently pipes in the coplanar, two the both ends support of first violently pipe is connected through first standpipe respectively.

Further, the two first transverse pipes are obliquely arranged.

Further, an open slot is formed between the second elastic connecting part and the head part of the rigid connecting part.

Further, the tail part of the rigid connecting part is provided with a contraction groove, and the needle tail is arranged in the contraction groove.

Furthermore, the needle tail and the second horizontal tube which comprises two positions in the same plane are connected through a second vertical tube, and one end of the second horizontal tube is fixed on the inner side of the shrinkage groove.

Further, the diameter of an opening formed between one ends of the two second transverse pipes is larger than that of an opening formed between the other ends of the two second transverse pipes.

Further, a clamping groove is formed in the side portion of the rigid connecting portion.

Further, the head of the needle is provided with a plurality of contacts.

Compared with the prior art, the shrapnel needle has the following advantages: (1) according to the elastic piece pin, the pin head and the pin tail are connected together through the elastic connecting part and the rigid connecting part, when the elastic piece pin is used, the pin tail is in elastic contact with a PCB (printed circuit board), the pin head is in contact with a tested component, and the pin head and the tested component can elastically deform to a certain extent under the action of the elastic connecting part, so that good contact between the pin head and the tested component and between the pin tail and the PCB can be ensured, and the problem of inaccurate test caused by poor contact can be avoided; (2) compared with the assembly mode of a spring probe, the elastic sheet needle has the advantages that the needle head, the elastic connecting part, the rigid connecting part and the needle tail are fixedly connected together, and under the action of stress, the elastic connecting part and the needle tail elastically contract, so that the parts can be prevented from being broken and damaged, and the product is ensured not to be easily damaged; (3) the elastic sheet needle is simple in overall structure, easy to manufacture, low in manufacturing cost and good in market popularization and application prospect.

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 pogo pin according to the present invention;

fig. 2 is a schematic structural view of the spring pin after being contacted and compressed with a PCB circuit board according to the present invention.

In the figure: 1. the PCB comprises a needle head, 2 contact heads, 3 first elastic connecting parts, 4 first transverse pipes, 5 first vertical pipes, 6 clamping grooves, 7 needle tails, 8 second transverse pipes, 9 second vertical pipes, 10 contraction grooves, 11 rigid connecting parts, 12 second elastic connecting parts and 13 PCB circuit boards.

Detailed Description

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

As shown in fig. 1, the shrapnel pin of the present invention comprises:

a needle head 1;

the head end of the elastic connecting part is arranged at the tail end of the needle head 1 in a retractable manner;

the head end of the rigid connecting part 11 is arranged at the tail end of the elastic connecting part;

the needle tail 7, needle tail 7 contractible ground sets up the tail end at elastic connection portion.

Referring to fig. 2, when testing the components on the PCB 13, the pin 7 is contacted with the PCB 13, and the pin 1 is contacted with the tested component, so that the testing can be performed. During the detection: after the needle head 1 is contacted with a tested element and is subjected to pressure, the pressure is transmitted to the elastic connecting part, and the elastic connecting part deforms; the needle tail 7 is under the action of pressure after contacting with the PCB circuit board 13, and the needle tail 7 can take place deformation as the base with rigid connection portion 11 to prevent to take place to roll over between syringe needle 1, elastic connection portion, rigid connection portion 11 and the needle tail 7 and damage, ensure that the product is difficult to take place to damage.

As shown in fig. 1, in a pogo pin of the present invention, the elastic connection portion includes:

a first elastic connecting portion 3;

the second elastic connecting portion 12, the second elastic connecting portion 12 and the first elastic connecting portion 3 have the same structure and are located in the same plane and are symmetrically arranged, wherein the second elastic connecting portion 12 is fixedly connected with one end of the first elastic connecting portion 3, and the other ends of the second elastic connecting portion 12 and the first elastic connecting portion 3 are distributed in an opening manner.

As shown in fig. 1, the first elastic connecting portion 3 is connected to the tail end of the needle 1, the second elastic connecting portion 12 is connected to the head end of the rigid connecting portion 11, and the second elastic connecting portion 12 and the left end of the first elastic connecting portion 3 are distributed in an open manner, so that certain elastic deformation can be ensured between the second elastic connecting portion 12 and the first elastic connecting portion 3.

As shown in fig. 1, in an elastic pin of the present invention, the first connecting portion 3 includes two first horizontal pipes 4 located in the same plane, and two end brackets of the two first horizontal pipes 4 are connected through first vertical pipes 5, respectively.

The first connecting part 3 is a hollow structure formed by two first transverse pipes 4 and two first vertical pipes 5, the second elastic connecting part 12 is the same as the first elastic connecting part 3 in structure, and elastic deformation in a large range can be smoothly ensured between the second elastic connecting part 12 and the first elastic connecting part 3 by reducing the mass.

As shown in fig. 1, in the shrapnel needle of the present invention, two first horizontal tubes 4 are obliquely arranged to facilitate elastic deformation.

As shown in fig. 1, in the pogo pin of the present invention, an open slot is formed between the second elastic connecting portion 12 and the head portion of the rigid connecting portion 11, so that the second elastic connecting portion 12 is forced to deform toward the rigid connecting portion 11.

As shown in fig. 1, in a shrapnel needle of the present invention, a tail portion of a rigid connection portion 11 is provided with a contraction groove 10, and a needle tail 7 is arranged in the contraction groove 10.

When the pin tail 7 is in contact with the PCB circuit board 13 and then is under pressure, the pin tail 7 can deform in the shrinkage groove 10 by taking the rigid connecting part 11 as a base, on one hand, good contact between the pin tail 7 and the PCB circuit board 13 can be ensured, and on the other hand, the pin tail 7 can be prevented from deforming seriously and being difficult to restore.

As shown in fig. 1, in a pogo pin of the present invention, the pin tail 7 includes two second horizontal tubes 8 located in the same plane, one ends of the two second horizontal tubes 8 are connected through a second vertical tube 9, and the other ends are respectively fixed at the inner side of the shrinkage groove 10. And the diameter of the opening formed between one ends of the two second transverse pipes 8 is larger than the diameter of the opening formed between the other ends of the two second transverse pipes 8.

The needle tail 7 is also a hollow structure formed by two second transverse pipes 8 and a second vertical pipe 9, so that the needle tail 7 can be ensured to smoothly realize elastic deformation.

As shown in fig. 1, in the shrapnel needle of the present invention, a slot 6 is provided at a side portion of the rigid connection portion 11, and a positioning hook is provided in the slot 6 to realize positioning of the whole shrapnel needle.

As shown in fig. 1, in the pogo pin of the present invention, the head of the pin head 1 is provided with a plurality of contact heads 2, which facilitate good contact with the device under test.

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. A shrapnel pin, comprising:

a needle (1);

the head end of the elastic connecting part is arranged at the tail end of the needle head (1) in a retractable manner;

the head end of the rigid connecting part (11) is arranged at the tail end of the elastic connecting part;

the needle tail (7) is arranged at the tail end of the elastic connecting part in a retractable manner.

2. The pogo pin of claim 1, wherein the elastic connection portion comprises:

a first elastic connecting portion (3);

the elastic connecting device comprises a second elastic connecting portion (12), wherein the second elastic connecting portion (12) and the first elastic connecting portion (3) are identical in structure, located in the same plane and symmetrically arranged, the second elastic connecting portion (12) is fixedly connected with one end of the first elastic connecting portion (3), and the other ends of the second elastic connecting portion (12) and the first elastic connecting portion (3) are distributed in an opening mode.

3. The shrapnel needle as claimed in claim 2, wherein the first connecting part (3) comprises two first horizontal pipes (4) which are arranged in the same plane, and two end brackets of the two first horizontal pipes (4) are respectively connected through a first vertical pipe (5).

4. The projectile needle according to claim 3, wherein said first cross tubes (4) are arranged obliquely.

5. A shrapnel needle according to claim 1, characterized in that the tail of the rigid connection (11) is provided with a shrink groove (10), the needle tail (7) being arranged in the shrink groove (10).

6. The projectile needle according to claim 5, wherein the needle tail (7) comprises two second horizontal tubes (8) which are arranged in the same plane, one ends of the two second horizontal tubes (8) are connected through a second vertical tube (9), and the other ends are respectively fixed at the inner sides of the contraction grooves (10).

7. The pogo pin of claim 1, wherein an opening diameter formed between one ends of the two second cross tubes (8) is larger than an opening diameter formed between the other ends of the two second cross tubes (8).

8. Shrapnel needle according to claim 1, characterized in that the side of the rigid connection (11) is provided with a snap groove (6).

9. Shrapnel needle according to claim 1, characterized in that the head of the needle head (1) is provided with a plurality of contacts (2).

10. A shrapnel needle according to claim 1, characterized in that an open slot is formed between the second elastic connecting part (12) and the head of the rigid connecting part (11).