A reed needle sleeve type test probe

Abstract

The utility model discloses a tongue spring needle cover type test probe, including needle cover and needle shaft, the needle shaft installs in the needle cover, is set with the wire slot on the needle cover, and the tongue spring is connected on the needle cover, the tongue spring is located the top of wire slot, and the one end of tongue spring is elastically bent into wire slot towards small. This tongue spring needle cover type test probe sets up a elastic tongue spring on the needle cover, when the needle shaft inserts into the needle cover, will form the close contact between tongue spring, makes the current and signal can smoothly from the needle cover and the needle shaft top steady transmission, thereby increases the plug -in frequency, improves the service life of fixture, reduces the cost.

Description

Technical Field

[0001] This utility model belongs to the field of semiconductor testing technology, specifically relating to a reed-sleeve test probe. Background Technology

[0002] The test probe consists of a needle sleeve and a needle shaft. The needle sleeve is hollow, forming a hollow space. During operation, the needle sleeve is soldered to the PCB board, and the needle shaft is placed in the hollow space of the needle sleeve. Because the needle sleeve is fixed to the PCB board, replacement is inconvenient; only the internal needle shaft can be replaced. Traditional needle sleeves have two misaligned recesses on the outside. The needle shaft is placed inside the cavity of the needle sleeve, and the needle shaft and needle sleeve are connected as a whole by precision riveting. The needle shaft contacts and is fixed to the recesses inside the sleeve cavity, preventing loosening during testing. However, with repeated insertion and removal, the bonding force between the needle sleeve and needle shaft in this traditional connection method weakens, causing instability and potentially leading to abnormal signal or current conduction. Utility Model Content

[0003] The purpose of this invention is to provide a reed-type needle sleeve test probe to solve the problem that the connection force between the needle sleeve and the needle shaft will decrease after repeated pulling and inserting in the traditional needle sleeve and needle shaft connection method, resulting in unstable connection between the two and thus causing abnormal conduction of signal or current.

[0004] To solve the above-mentioned technical problems, this utility model discloses a reed needle sleeve test probe, including a needle sleeve and a needle shaft. The needle shaft is installed inside the needle sleeve. A wire groove is opened on the needle sleeve. A reed is connected to the needle sleeve. The reed is located above the wire groove, and one end of the reed can be elastically bent into the wire groove.

[0005] The technical solution of this utility model also has the following characteristics:

[0006] As a further improvement to the technical solution of this utility model, the end of the needle shaft that extends into the needle sleeve is cylindrical.

[0007] As a further improvement to the technical solution of this utility model, the end of the needle shaft away from the needle sleeve is tapered.

[0008] As a further improvement to the technical solution of this utility model, the needle shaft is provided with an annular groove on the outside, and the needle sleeve is provided with multiple recesses on the outside.

[0009] As a further improvement to the technical solution of this utility model, a limiting ring is provided on the outside of the needle shaft.

[0010] Compared with the prior art, the present invention provides a reed needle sleeve type test probe, which has an elastic reed on the needle sleeve. When the needle shaft is inserted into the needle sleeve, it will form a tight contact with the reed, so that the current and signal can be transmitted smoothly and stably from the needle sleeve and the needle shaft, thereby increasing the number of insertion and removal cycles, improving the service life of the fixture, and reducing costs. Attached Figure Description

[0011] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0012] Figure 1 This is a schematic diagram of the structure of a reed needle sleeve test probe according to this utility model;

[0013] Figure 2 This is a schematic diagram of the needle shaft structure in a reed needle sleeve type test probe of this utility model;

[0014] Figure 3 This is a schematic diagram of the needle sleeve structure in a reed needle sleeve type test probe of this utility model.

[0015] In the diagram, 1. needle shaft, 2. needle sleeve, 3. thread groove, 4. tongue spring, 5. annular groove, 6. concave point, 7. limiting ring. Detailed Implementation

[0016] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote 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 exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0017] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.

[0018] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0019] Example 1

[0020] like Figure 1As shown, the present invention provides a reed needle sleeve type test probe, including a needle sleeve 2 and a needle shaft 1. The needle shaft 1 is installed inside the needle sleeve 2. A wire groove 3 is provided on the needle sleeve 2. A reed 4 is connected to the needle sleeve 2. The reed 4 is located above the wire groove 3, and one end of the reed 4 is downward and can be elastically bent into the wire groove 3.

[0021] The needle sleeve 2 has a wire groove 3 created using a wire cutting process. It is then placed in a fixture to press out the bent surface, i.e., the tongue spring 4. The tongue spring 4 is then shaped through a heat treatment process. The needle sleeve 2 has open ends, and the needle shaft 1 is positioned according to the opening direction of the tongue spring 4. Figure 1 As shown, the needle is inserted into the needle sleeve 2. At this time, the needle shaft 1 will push the tongue spring 4 on the needle sleeve 1 outward, and the two will make close contact.

[0022] During operation, the needle sleeve 2 is fixed on the PCB board. Then, by controlling the insertion and removal of the needle shaft 1, it is ensured that the needle shaft 1 and the tongue spring 4 on the needle sleeve 2 are tightly connected, thereby realizing the stable transmission of signals and current between the needle shaft 1 and the needle sleeve 2.

[0023] Therefore, compared with the prior art, the present invention provides a reed needle sleeve type test probe, which has an elastic reed 4 on the needle sleeve 2. When the needle shaft 1 is inserted into the needle sleeve 2, it will form a tight contact with the reed 4, so that the current and signal can be smoothly and stably transmitted from the needle sleeve 1 and the needle shaft 2, thereby increasing the number of insertion and removal cycles, improving the service life of the fixture, and reducing costs.

[0024] Example 2

[0025] Combination Figure 2 Unlike Embodiment 1, in Embodiment 2 of this utility model, the end of the needle shaft 1 that extends into the needle sleeve 2 is designed to be cylindrical, and the end of the needle shaft 1 that is away from the needle sleeve 2 is tapered, which facilitates connection with the test point and the test instrument.

[0026] Example 3

[0027] Combination Figure 2 and Figure 3 Unlike Embodiment 2, in Embodiment 3, a reed needle sleeve type test probe of this utility model has an annular groove 5 on the outside of the needle shaft 1 and a plurality of recesses 6 on the outside of the needle sleeve 2, with the recesses 6 located inside the annular groove 5.

[0028] This ensures that the needle shaft 1 can move to a certain extent within the needle sleeve 2.

[0029] Example 4

[0030] Combination Figure 2 Unlike Embodiment 3, in Embodiment 4, a limit ring 7 is provided on the outside of the needle shaft 1 in a reed needle sleeve test probe of this utility model.

[0031] After the needle shaft 1 is inserted into the needle sleeve 2, since the outer diameter of the limiting ring 7 is larger than the inner diameter of the needle sleeve 2, the limiting ring 7 will eventually be stuck outside one end of the needle sleeve 2, thus preventing the needle shaft 1 from being damaged by excessive insertion.

[0032] The foregoing description illustrates and describes several preferred embodiments of the utility model. However, as previously stated, it should be understood that the utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the utility model concept described herein through the foregoing teachings or the technology or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the utility model should be within the protection scope of the appended claims.

Claims

1. A reed-sleeve type test probe, comprising a needle sleeve (2) and a needle shaft (1), wherein the needle shaft (1) is installed inside the needle sleeve (2), characterized in that, The needle sleeve (2) has a wire groove (3) and a tongue spring (4) is connected to the needle sleeve (2). The tongue spring (4) is located above the wire groove (3) and one end of the tongue spring (4) can be elastically bent into the wire groove (3).

2. The reed-tip type test probe as described in claim 1, characterized in that, The end of the needle shaft (1) that extends into the needle sleeve (2) is cylindrical.

3. The reed-tip type test probe as described in claim 2, characterized in that, The end of the needle shaft (1) away from the needle sleeve (2) is tapered.

4. The reed-tipped test probe as described in claim 3, characterized in that, The needle shaft (1) has an annular groove (5) on its outside, and the needle sleeve (2) has multiple recesses (6) on its outside.

5. The reed-tipped test probe as described in claim 3, characterized in that, A limiting ring (7) is provided on the outside of the needle shaft (1).

Images