CN115267277A - Double-head double-acting test probe capable of preventing needle shaft from rotating - Google Patents
Double-head double-acting test probe capable of preventing needle shaft from rotating Download PDFInfo
- Publication number
- CN115267277A CN115267277A CN202210962969.1A CN202210962969A CN115267277A CN 115267277 A CN115267277 A CN 115267277A CN 202210962969 A CN202210962969 A CN 202210962969A CN 115267277 A CN115267277 A CN 115267277A
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- Prior art keywords
- needle
- double
- test probe
- head
- probe capable
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/06—Measuring leads; Measuring probes
- G01R1/067—Measuring probes
- G01R1/06711—Probe needles; Cantilever beams; "Bump" contacts; Replaceable probe pins
- G01R1/06716—Elastic
- G01R1/06722—Spring-loaded
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/06—Measuring leads; Measuring probes
- G01R1/067—Measuring probes
- G01R1/06711—Probe needles; Cantilever beams; "Bump" contacts; Replaceable probe pins
- G01R1/06733—Geometry aspects
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Geometry (AREA)
- Measuring Leads Or Probes (AREA)
Abstract
The invention discloses a double-head double-acting test probe capable of preventing a needle shaft from rotating, which comprises: the needle tube (1), a limiting cavity is formed in the needle tube (1); the elastic piece (3), the said elastic piece (3) is set up in the syringe (1); the needle head (4) is arranged at one end of the needle tube (1) in a telescopic manner, and the limiting cavity is used for limiting the rotation of the needle head (4); the needle tail (2) is arranged at the other end of the needle tube (1) in a telescopic mode, and the limiting cavity is used for limiting the rotation of the needle tail (2). This can prevent rotatory double-end double acting test probe of needle axle, solved current test probe in the use, the problem of needle axle, spring, needle tubing take place the rotation each other easily.
Description
Technical Field
The invention belongs to the technical field of semiconductor detection, and particularly relates to a double-head double-acting test probe capable of preventing a needle shaft from rotating.
Background
The test probe is mainly used for detecting a tested piece, but when the existing test probe is used, the needle shaft, the spring and the needle tube rotate in the test process, so that the impedance, current and elasticity of the test probe are greatly changed, the test performance of the test probe is weakened, and the test probe cannot be used in a precise test environment.
Disclosure of Invention
The invention aims to provide a double-head double-acting test probe capable of preventing a needle shaft from rotating, and solves the problem that the needle shaft, a spring and a needle tube are easy to rotate in the use process of the conventional test probe.
In order to solve the above technical problem, the present invention discloses a double-ended double-action test probe capable of preventing a needle shaft from rotating, comprising:
the needle tube is internally provided with a limiting cavity;
an elastic member disposed within the needle tube;
the needle head is telescopically arranged at one end of the needle tube, and the limiting cavity is used for limiting the rotation of the needle head;
the needle tail is telescopically arranged at the other end of the needle tube, and the limiting cavity is used for limiting the rotation of the needle tail.
The technical scheme of the invention also has the following characteristics:
as a further improvement of the technical scheme of the invention, the needle tube is square, and the limit cavity is square.
As a further improvement of the technical scheme, the needle head is provided with a first limiting block which is square.
As a further improvement of the technical scheme, a second limiting block is arranged on the needle tail, and the second limiting block is square.
As a further improvement of the technical scheme of the invention, the needle tail is provided with a connecting hole.
As a further improvement of the technical scheme of the invention, the head part of the needle head is conical.
As a further improvement of the technical scheme of the invention, the elastic piece is a compression spring.
As a further improvement of the technical scheme of the invention, the compression spring is in a square shape with two open ends.
Compared with the prior art, the double-head double-acting test probe capable of preventing the needle shaft from rotating has the advantages that the limitation can be formed between the needle tube and the needle head and the needle tail, the needle head and the needle tail are placed to rotate in the using process, and the problems that the test performance of the test probe is weakened and the test probe cannot be used in a precise test environment due to large changes of impedance, current and elasticity of the test probe are avoided; this can prevent rotatory double-end double acting test probe of needle axle, overall structure is simple, easily makes, and the cost of manufacture is lower, has better market popularization and use 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 diagram of a double-ended, double-action test probe of the present invention that prevents rotation of the needle shaft;
FIG. 2 is a schematic diagram of the structure of the needle cannula of a double-ended, double-action test probe of the present invention that prevents rotation of the needle shaft;
FIG. 3 is a schematic diagram of the structure of the tip of a double-ended, double-action test probe of the present invention that prevents rotation of the needle shaft;
FIG. 4 is a schematic diagram of the structure of the pin tail of a double-ended, double-action test probe of the present invention that prevents rotation of the pin shaft.
In the figure: 1. the needle tube, 2 needle tails, 3 elastic components, 4 needle heads, 5 first limiting blocks and 6 second limiting blocks.
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 or similar 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 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 fig. 1 to 4, a double-ended double-action test probe capable of preventing a needle shaft from rotating according to the present invention includes:
a limiting cavity is formed in the needle tube 1;
the elastic piece 3, the elastic piece 3 is set in the needle tube 1;
the needle head 4 is arranged at one end of the needle tube 1 in a telescopic manner, and the limiting cavity is used for limiting the rotation of the needle head 4;
the needle tail 2 is telescopically arranged at the other end of the needle tube 1, and the limiting cavity is used for limiting the rotation of the needle tail 2.
During assembly, the elastic part 3 is firstly placed in the needle tube 1, and then the needle head 4 and the needle tail 2 are assembled at the two ends of the needle tube 1. The shapes of the needle head 4 and the needle tail 2 are matched with a limit cavity in the needle tube 1, and the limit cavity can ensure that the needle head 4 and the needle tail 2 cannot rotate in the needle tube 1.
During the work, syringe needle 4 and the contact of measurand, backshank 2 and test instrument contact, syringe needle 4 or backshank 2 receive pressure effect can make elastic component 3 shrink, and elastic force reverse action of elastic component 3 can not 4 backshanks of syringe needle 2 respectively in measurand and test instrument realize advancing the contact, ensure that the signal can stable transport to the guarantee test result is more accurate.
As shown in figure 1, in the double-ended double-action test probe capable of preventing the rotation of the needle shaft, the needle tube 1 is square, and the limiting cavity is square.
The appearance and the spacing cavity phase-match of syringe needle 4 and backshank 2 can ensure to install in needle tubing 1, and spacing through the spacing cavity of square makes syringe needle 4 and backshank 2 can not take place rotatoryly at the during operation.
As shown in fig. 1, in the double-ended double-acting test probe capable of preventing the rotation of the probe shaft according to the present invention, a first stopper 5 is disposed on the probe head 4, and the first stopper 5 is square.
The outer diameter of the first limiting block 5 is larger than the inner diameter of the port of the needle tube 1, so that the needle head 4 is limited in the needle tube 1 and cannot slide out of the needle tube 1. In addition, the first limiting block 5 is designed to be square to match with the inner diameter of the needle tube 1, so that the needle head can be further prevented from rotating in the needle tube.
As shown in fig. 1, in the double-ended double-acting test probe capable of preventing rotation of the needle shaft of the present invention, a second limiting block 6 is disposed on the needle tail 2, and the second limiting block 6 is square.
The outer diameter of the second limiting block 6 is larger than the inner diameter of the port of the needle tube 1, so that the needle tail 2 is limited in the needle tube 1 and cannot slide out of the needle tube 1. In addition, the second limiting block 6 is designed into a square shape to be matched with the inner diameter of the needle tube 1, so that the needle tail 2 can be further ensured not to rotate in the needle tube 1.
As shown in fig. 1, in the double-ended double-action test probe of the present invention, which can prevent the rotation of the needle shaft, a needle tail 2 is provided with a connection hole.
The connecting hole can be accessed to through the data line of the testing instrument, and good contact with the needle tail 2 is ensured.
In a double-ended, double-action test probe of the present invention, which prevents rotation of the needle shaft, the head of the needle 4 is tapered, as shown in figure 1.
The conical head of the needle 4 can ensure good contact between the needle 4 and the tested object.
In a double-ended double-action test probe of the present invention, which prevents the rotation of the needle shaft, the elastic member 3 is a compression spring, as shown in fig. 1.
The elastic member 3 is preferably a compression spring, and the compression spring is located between the second stoppers 6 of the first stopper 5, so that the pressure can be uniformly applied to the compression spring, the stability of the elastic force can be ensured, and the compression spring is not deflected.
In a double-ended double-action test probe of the present invention, which prevents the rotation of the needle shaft, the compression spring is formed in a square shape with both ends open, as shown in fig. 1.
The shape of the compression spring is matched with the limiting cavity, so that the compression spring cannot rotate in the using process.
Therefore, compared with the prior art, the double-head double-acting test probe capable of preventing the needle shaft from rotating has the advantages that the limitation can be formed between the needle tube and the needle head and the needle tail, the needle head and the needle tail are placed to rotate in the using process, and the problems that the test performance of the test probe is weakened and the test probe cannot be used in a precise test environment due to large changes of impedance, current and elasticity of the test probe are avoided.
In addition, this can prevent double-end double acting test probe of needle shaft rotation, overall structure is simple, easily makes, and the cost of manufacture is lower, has better market popularization and use prospect.
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 (8)
1. A double-ended double-action test probe capable of preventing rotation of a needle shaft, comprising:
the needle tube (1), a limiting cavity is formed in the needle tube (1);
the elastic piece (3), the said elastic piece (3) is set up in the syringe (1);
the needle head (4) is telescopically arranged at one end of the needle tube (1), and the limiting cavity is used for limiting the needle head (4) to rotate;
the needle tail (2) is arranged at the other end of the needle tube (1) in a telescopic mode, and the limiting cavity is used for limiting the rotation of the needle tail (2).
2. Double-ended double-action test probe capable of preventing rotation of the needle shaft according to claim 1, characterized in that the needle tube (1) is square and the restraining cavity is square.
3. Double-ended double-action test probe capable of preventing rotation of the needle shaft according to claim 1, wherein a first stopper (5) is arranged on the needle head (4), and the first stopper (5) is square.
4. Double-ended double-action test probe capable of preventing rotation of a needle shaft according to claim 1, wherein a second stopper (6) is arranged on the needle tail (2), and the second stopper (6) is square.
5. Double-ended double-action test probe capable of preventing rotation of the needle shaft according to claim 1, characterized in that the needle tail (2) is provided with a connection hole.
6. Double-ended double-action test probe capable of preventing needle shaft rotation according to claim 1, characterized in that the head of the needle head (4) is conical.
7. Double-ended double-action test probe capable of preventing rotation of the needle shaft according to claim 1, characterized in that the elastic member (3) is a compression spring.
8. The double-ended double-action test probe capable of preventing rotation of a needle shaft of claim 1, wherein the compression spring is square with both ends open.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210962969.1A CN115267277A (en) | 2022-08-11 | 2022-08-11 | Double-head double-acting test probe capable of preventing needle shaft from rotating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210962969.1A CN115267277A (en) | 2022-08-11 | 2022-08-11 | Double-head double-acting test probe capable of preventing needle shaft from rotating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115267277A true CN115267277A (en) | 2022-11-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210962969.1A Pending CN115267277A (en) | 2022-08-11 | 2022-08-11 | Double-head double-acting test probe capable of preventing needle shaft from rotating |
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| Country | Link |
|---|---|
| CN (1) | CN115267277A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115856370A (en) * | 2023-02-01 | 2023-03-28 | 苏州中熙精密电机有限公司 | Flying probe module and flying probe tester |
| CN117805457A (en) * | 2024-02-29 | 2024-04-02 | 苏州迪克微电子有限公司 | Template-based probe-free disassembly type probe array structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1462185A (en) * | 1973-05-09 | 1977-01-19 | Marconi Instruments Ltd | Probe assembly for an electrical tester |
| US5032787A (en) * | 1989-11-03 | 1991-07-16 | Everett/Charles Contact Products, Inc. | Electrical test probe having rotational control of the probe shaft |
| CN113608102A (en) * | 2021-07-27 | 2021-11-05 | 深圳市美锐精密电子有限公司 | Test probe suitable for large current |
| CN215493750U (en) * | 2021-07-02 | 2022-01-11 | 东莞市华合赢电子科技有限公司 | Anti-rotation probe |
-
2022
- 2022-08-11 CN CN202210962969.1A patent/CN115267277A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1462185A (en) * | 1973-05-09 | 1977-01-19 | Marconi Instruments Ltd | Probe assembly for an electrical tester |
| US5032787A (en) * | 1989-11-03 | 1991-07-16 | Everett/Charles Contact Products, Inc. | Electrical test probe having rotational control of the probe shaft |
| CN215493750U (en) * | 2021-07-02 | 2022-01-11 | 东莞市华合赢电子科技有限公司 | Anti-rotation probe |
| CN113608102A (en) * | 2021-07-27 | 2021-11-05 | 深圳市美锐精密电子有限公司 | Test probe suitable for large current |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115856370A (en) * | 2023-02-01 | 2023-03-28 | 苏州中熙精密电机有限公司 | Flying probe module and flying probe tester |
| CN117805457A (en) * | 2024-02-29 | 2024-04-02 | 苏州迪克微电子有限公司 | Template-based probe-free disassembly type probe array structure |
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