CN213210237U

CN213210237U - Needle tubing integral type test probe

Info

Publication number: CN213210237U
Application number: CN202020947049.9U
Authority: CN
Inventors: 张小英; 申啸; 邹斌
Original assignee: Weinan Hi Tech Zone Wood King Technology Co Ltd
Current assignee: Weinan Muwang Intelligent Technology Co ltd
Priority date: 2020-05-29
Filing date: 2020-05-29
Publication date: 2021-05-14
Anticipated expiration: 2030-05-29

Abstract

The utility model discloses a needle tubing integral type test probe, include: the needle rod comprises a needle head part at one end and a limiting part in the middle; the needle tube is sleeved on the needle rod and is positioned between the needle head part and the limiting part; the spring is sleeved on the needle rod and clamped between the needle head and the needle tube. This needle tubing integral type test probe has solved current needle tubing integral type test probe, carries out more part cooperation in narrow and small space, and it is great often to cause the size error, causes the area cover test probe when actual test, has bad contact, leads to the unsafe problem of test data.

Description

Needle tubing integral type test probe

Technical Field

The utility model belongs to the technical field of electronic components, especially, relate to a needle tubing integral type test probe.

Background

The test probe is a contact medium for electrical test, is mainly used as a carrier for connecting and conducting electronic components, and belongs to high-end compact electronic hardware components.

The sleeved test probe is one of test probes and mainly comprises a needle shaft, a needle tube, a spring and a sleeve, wherein the tail part of the sleeve is provided with a tail needle, and a cable is welded on the tail needle and is connected with a test control board; the needle shaft, the needle tube and the spring form a test probe, the test probe is arranged in the sleeve, the needle shaft of the test probe is contacted with a tested object during working, and whether the product is normally contacted or not and the operation data are normal is judged through the data of the needle shaft conductive transmission functional body.

According to the practical production experience of the inventor, the following defects are commonly existed in the prior sleeved test probe: because the size of the test probe with the sleeve is small (the diameter is generally several millimeters) and the number of components is large, the matching of more components is carried out in a narrow space, the size error is large frequently, and the problem that the test data is inaccurate due to poor contact when the test probe with the sleeve is actually tested is caused.

Disclosure of Invention

An object of the utility model is to provide a needle tubing integral type test probe to solve current needle tubing integral type test probe, carry out more part cooperation in narrow and small space, often can cause dimensional error great, cause the area cover test probe when actual test, have bad contact, lead to the unsafe problem of test data.

In order to realize the purpose, the utility model discloses the technical scheme who adopts is: a needle tubing integrated test probe comprising:

the needle rod comprises a needle head part at one end and a limiting part in the middle;

the needle tube is sleeved on the needle rod and is positioned between the needle head part and the limiting part;

the spring is sleeved on the needle rod and clamped between the needle head and the needle tube.

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

the limiting part comprises an annular groove positioned on the outer wall of the needle rod and a clamp clamped in the annular groove.

The clamp is a clamping ring.

One end of the needle tube is provided with a connecting flange.

The spring is a compression spring.

A first spring annular groove is formed in the end face of the connecting flange, and one end of the spring is arranged in the first spring annular groove.

And a second spring annular groove is formed in the end face of the needle head part, and the other end of the spring is arranged in the second spring annular groove.

The other end of the needle tube is provided with a limiting tube with a reduced diameter, and the limiting tube is pressed on the limiting part.

The front end of the needle head part is a spherical surface.

The utility model has the advantages that: the utility model discloses a needle tubing integral type test probe uses needle shaft and needle tubing as an organic whole on the one hand to reduced the quantity that the part was assembled, ensured the accuracy nature of assembling between each part, on the other hand spring adopts external arranging, assembles needle bar and needle tubing slidable compression ground together, assembles simple relatively, can further ensure the accuracy nature of assembling between each part, finally makes the utility model discloses a this kind of needle tubing integral type test probe can realize good contact with the measurand, ensures the accuracy of test result.

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 structural view of a needle tube integrated test probe according to the present invention;

FIG. 2 is a schematic structural view of the needle shaft of FIG. 1;

FIG. 3 is a schematic view of the needle cannula of FIG. 1.

In the figure: 1. the needle rod, 2, the clamp, 3, the limiting pipe, 4, the needle tube, 5, the connecting flange, 6, the spring, 7, the needle head part and 8, the annular groove.

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.

As shown in fig. 1, the needle tube integrated test probe of the present invention mainly comprises the following components:

a needle bar 1, the needle bar 1 comprises a needle head part 7 at one end and a middle limiting part;

a needle tube 4, the needle tube 4 is sleeved on the needle bar 1, and the needle tube 4 is positioned between the needle head part 7 and the limiting part;

a spring 6, the spring 6 is sleeved on the needle bar 1, and the spring 6 is clamped between the needle head part 7 and the needle tube 4.

As shown in figure 1, the utility model discloses a during needle tubing integral type test probe assembly, earlier with 6 suit of spring on needle bar 1, later with 4 suits of needle tubing on needle bar 1 again, at last at the middle part processing a spacing portion of needle bar 1, make needle tubing 4 kept off in the inboard of spacing portion, accomplish the assembly. It should be noted that, after the assembly is completed, the spring 6 is in a compressed state, and due to the elastic action, the two ends of the spring 6 will respectively press against the needle head 7 and the end face of the needle tube 4.

The utility model discloses a when needle tubing integral type test probe used, needle tubing 4 was fixed with surveying test panel, compression needle bar 1 afterwards, and needle bar 1 compression spring contacts 7 and the measurand contact to the below-mentioned, can carry out test on next step to the syringe needle portion after the downstream. After the test is finished, the force application to the needle bar 1 is stopped, and the spring 6 is restored to be deformed, so that the needle bar 1 is automatically reset.

Obviously, compare with prior art, the utility model discloses a needle tubing integral type test probe uses needle shaft and needle tubing as an organic whole (being needle bar 1) on the one hand to reduced the quantity that the part was assembled, ensured the accuracy nature of assembly between each part, on the other hand spring 6 adopts external arranging, assembles needle bar 1 and needle tubing 4 slidable compression ground together, assembles simple relatively, can further ensure the accuracy nature of assembly between each part, finally makes the utility model discloses a this kind of needle tubing integral type test probe can realize good contact with the measured object, ensures the accuracy of test result.

As shown in fig. 2, in the needle tube integrated test tube of the present invention, the limiting portion comprises an annular groove 8 located on the outer wall of the needle rod 1 and a clamp 2 clamped in the annular groove 8.

The clamp 2 is clamped in the annular groove 8, so that the needle tube 4 can be positioned, and one end of the needle tube 4 is blocked by the clamp 2 when the needle tube moves downwards under the action of the elastic force of the spring 6.

As shown in fig. 2, in the needle tube integrated measuring probe of the present invention, the clamp 2 is preferably a snap ring.

After the clamping ring is clamped in the limiting groove 8, the clamping ring can be flattened under the action of external force, so that the clamping ring cannot move, and the needle tube 4 is well limited.

As shown in fig. 3, in the needle tube integrated test probe of the present invention, a connecting flange 5 is provided at one end of the needle tube 4.

The connecting flange 5 is used for connecting the spring 6 on one hand, and on the other hand, the needle tube 4 can be installed on the test board through screws, so that the installation and the disassembly are convenient.

In a needle cannula integrated probe of the present invention, as shown in fig. 1, the spring 6 is preferably a compression spring.

The compression spring is deformed under stress, and can simultaneously apply force to the needle head part 7 and the needle tube 4, so that the needle rod 1 can be quickly reset after the test is finished.

As shown in fig. 1, in the needle tube integrated probe of the present invention, a first spring ring groove is provided on the end surface of the connecting flange 5, and one end of the spring 6 is disposed in the first spring ring groove, so as to facilitate installation, and ensure that the elasticity of the spring 6 can be uniform on the connecting flange 5.

As shown in fig. 1, in the needle tube integrated probe of the present invention, the end surface of the needle head portion 7 is provided with the second spring ring groove, and the other end of the spring 6 is disposed in the second spring ring groove, so as to facilitate installation, and ensure that the elasticity of the spring 6 can be uniformly applied to the needle head portion 7.

As shown in fig. 1, in the needle tube integrated probe of the present invention, the other end of the needle tube 4 is provided with a diameter-reduced spacing tube 3, and the spacing tube 3 is pressed on the spacing portion.

The needle rod 1 may deform slightly after long-term use, so that the inner diameter of the needle tube 4 can be designed to be larger, a larger space is reserved for the needle tube 1 to slide, and the deformed needle rod 1 can smoothly penetrate out of the needle tube 4.

As shown in fig. 1, in the needle tube integrated testing probe of the present invention, the front end of the needle head portion 7 is a spherical surface, which facilitates to form a good contact with the tested object.

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 intended to be exhaustive of other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed above, or as otherwise known in 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. A needle tubing integrated test probe, comprising:

the needle rod (1) comprises a needle head part (7) at one end and a middle limiting part;

the needle tube (4) is sleeved on the needle rod (1), and the needle tube (4) is positioned between the needle head part (7) and the limiting part;

the spring (6) is sleeved on the needle rod (1), and the spring (6) is clamped between the needle head part (7) and the needle tube (4).

2. The needle tube integrated test probe as claimed in claim 1, wherein the limiting portion comprises an annular groove (8) on the outer wall of the needle bar (1) and a clamp (2) clamped in the annular groove (8).

3. The needle tubing integrated test probe of claim 2, wherein the clamp (2) is a snap ring.

4. The needle-tube integrated test probe according to claim 1, wherein one end of the needle tube (4) is provided with a connection flange (5).

5. The needle cannula integrated test probe of claim 4, wherein the spring (6) is a compression spring.

6. The needle tubing integrated test probe according to claim 5, wherein a first spring ring groove is provided on an end face of the connection flange (5), and one end of the spring (6) is disposed in the first spring ring groove.

7. The needle-tube integrated test probe according to claim 1, wherein a second spring ring groove is provided on an end face of the tip section (7), and the other end of the spring (6) is disposed in the second spring ring groove.

8. The needle tube integrated test probe according to claim 1, wherein the other end of the needle tube (4) is provided with a limiting tube (3) with a reduced diameter, and the limiting tube (3) is pressed against the limiting part.

9. The needle-tube integrated test probe as claimed in claim 1, wherein the tip portion (7) has a spherical front end.