A replaceable needle shaft type test probe

Abstract

The utility model discloses a kind of replaceable needle shaft type test probes, including needle tube, first wire slot is opened in the needle tube, first tongue spring is connected on needle tube, first tongue spring is located above first wire slot, and the end of first tongue spring is elastically bent into first wire slot towards small, one end of needle tube is equipped with first needle shaft, first tongue spring is located above first needle shaft, the other end of needle tube is equipped with second needle shaft, spring is provided in needle tube, the tail of first needle shaft and the tail of second needle shaft are respectively contacted with the two ends of spring.The replaceable needle shaft type test probe, by replacing needle shaft, avoid the problem that test probe whole cannot be used, need to be scrapped and cause resource waste.

Description

Technical Field

[0001] This utility model belongs to the field of electronic component technology, specifically relating to a replaceable pin shaft type test probe. Background Technology

[0002] Test probes, assembled from components such as a needle shaft, spring, and needle tube, are used for overcurrent testing and are currently widely applied in fields such as mobile phones, communications, automobiles, medical devices, and aerospace. In existing test probe designs, the needle shaft is inserted into the needle tube and contacts the spring. Through riveting technology, the needle shaft, spring, and needle tube are integrated into a single unit. The precise connection between the needle shaft and needle tube allows only axial movement. Prolonged contact between the needle shaft and the component under test leads to accelerated wear, causing test anomalies and ultimately rendering the entire test probe unusable, resulting in significant resource waste. Utility Model Content

[0003] The purpose of this invention is to provide a replaceable needle shaft test probe, which avoids the problem of the entire test probe becoming unusable and needing to be scrapped, thus avoiding resource waste.

[0004] To solve the above-mentioned technical problems, this utility model discloses a replaceable needle shaft type test probe, including a needle tube with a first wire groove. A first tongue spring is connected to the needle tube, the first tongue spring is located above the first wire groove, and one end of the first tongue spring is downward and can be elastically bent into the first wire groove. A first needle shaft is assembled at one end of the needle tube, the first tongue spring is located above the first needle shaft, and a second needle shaft is assembled at the other end of the needle tube. A spring is provided inside the needle tube, and the two ends of the spring are in contact with the tail of the first needle shaft and the tail of the second needle shaft, respectively.

[0005] The technical solution of this utility model also has the following characteristics: As a further improvement to the technical solution of this utility model, a second groove is provided on the needle tube, and a second tongue spring is provided on the needle tube. The second tongue spring is located above the second groove, and one end of the second tongue spring is downward and can be elastically bent into the second groove. The second tongue spring is located above the second needle shaft.

[0006] As a further improvement to the technical solution of this utility model, an intermediate needle shaft is provided inside the needle tube, and the intermediate needle shaft is located between the tail of the first needle shaft and one end of the spring.

[0007] As a further improvement to the technical solution of this utility model, the intermediate needle shaft is spherical or mushroom-shaped.

[0008] As a further improvement to the technical solution of this utility model, a groove is provided at the end of the intermediate needle shaft near the spring.

[0009] Compared with the prior art, the replaceable needle shaft test probe of this utility model can achieve the effect of a new needle simply by replacing the needle shaft when the needle shaft wears out after repeated use. The new needle shaft makes stable contact with the test piece, which greatly reduces the cost of use while ensuring product performance. Attached Figure Description

[0010] 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: Figure 1 This is a schematic diagram of the structure of the first embodiment of the replaceable needle shaft test probe of this utility model; Figure 2 This is a schematic diagram of the structure of a second embodiment of the replaceable needle shaft test probe of this utility model; Figure 3 This is a schematic diagram of the third embodiment of a replaceable needle shaft test probe of this utility model; Figure 4 This is a schematic diagram of the fourth embodiment of a replaceable needle shaft test probe of this utility model; Figure 5 This is a structural schematic diagram of the fifth embodiment of a replaceable needle shaft test probe of this utility model.

[0011] In the diagram, 1. First needle shaft, 2. Needle tube, 3. First tongue reed, 4. Spring, 5. Second needle shaft, 6. Second tongue reed, 7. Middle needle shaft. Detailed Implementation

[0012] 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.

[0013] 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.

[0014] 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.

[0015] Example 1

[0016] like Figure 1 As shown, a replaceable needle shaft type test probe of this utility model includes a needle tube 2, a first wire groove is provided on the needle tube 2, a first tongue spring 3 is connected to the needle tube 2, the first tongue spring 3 is located above the first wire groove, and one end of the first tongue spring 3 is downward and can be elastically bent into the first wire groove. A first needle shaft 1 is assembled at one end of the needle tube 2, the first tongue spring 3 is located above the first needle shaft 1, a second needle shaft 5 is assembled at the other end of the needle tube 2, and a spring 4 is provided inside the needle tube 2. The two ends of the spring 4 are in contact with the tail of the first needle shaft 1 and the tail of the second needle shaft 5, respectively.

[0017] The needle tube 2 has an open mouth structure at both ends. After processing such as wire cutting and stamping, the needle tube 2 will have an elastic first tongue spring 3 structure. The first tongue spring 3 is deformed by processing such as rolling and dotting. In this way, when the first needle shaft 1 is inserted from one end of the needle tube 2 and passes through the first tongue spring 3, it will be stuck and a tight contact will be formed between the two.

[0018] The first needle shaft 1 is in contact with the object being tested. After prolonged use, it wears down and can be removed from the needle tube 2 for replacement. Since the newly replaced first needle shaft 1 is in elastic contact with the first spring 3, the connection between the first needle shaft 1 and the needle tube 2 is stable, ensuring normal operation. The second needle shaft 5 connects to the testing instrument; its wear is negligible and replacement is generally unnecessary.

[0019] Example 2

[0020] like Figure 2 As shown, unlike Embodiment 1, in Embodiment 2, a replaceable needle shaft type test probe of this utility model has a second wire groove on the needle tube 2, a second tongue spring 6 on the needle tube 2, the second tongue spring 6 is located above the second wire groove, and one end of the second tongue spring 6 is bent downwards and can be elastically bent into the second wire groove. The second tongue spring 6 is located above the second needle shaft 5.

[0021] Similarly, when the second spring 6 is inserted from the other end of the needle tube 2, the second spring 6 makes elastic contact with the second needle shaft 5, which can ensure good contact between the needle tube and the second needle shaft 5 so as to transmit signals such as current. Example 3

[0022] Unlike Embodiment 2, in Embodiment 3, a replaceable needle shaft type test probe of this utility model includes an intermediate needle shaft 7 inside the needle tube 2. The intermediate needle shaft 7 is located between the tail of the first needle shaft 1 and one end of the spring 4, so as to facilitate the connection between the first needle shaft 1 and the spring 4.

[0023] like Figure 3 As shown, when the middle needle shaft 7 is spherical, the contact area is large, which facilitates signal transmission.

[0024] like Figure 4 As shown, when the middle needle shaft 7 is mushroom-shaped, its head has a large contact area, which facilitates signal transmission by contacting the tail of the first needle shaft 1. The tail is fitted with a spring 4, which facilitates the assembly of the spring 4 and ensures good contact stability.

[0025] like Figure 5 As shown, a groove is provided at one end of the middle needle shaft 7 near the spring 4, and one end of the spring 4 extends into the groove. This facilitates assembly and ensures good contact for stable signal transmission.

[0026] Therefore, compared with the prior art, the replaceable needle shaft test probe of this utility model can achieve the effect of a new needle simply by replacing the needle shaft when the needle shaft wears out after repeated use. The new needle shaft makes stable contact with the test piece, which greatly reduces the cost of use while ensuring product performance.

[0027] 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 replaceable needle shaft type test probe, characterized in that, The device includes a needle tube (2), on which a first groove is provided. A first tongue spring (3) is connected to the needle tube (2). The first tongue spring (3) is located above the first groove, and one end of the first tongue spring (3) is bent downwards and can be elastically inserted into the first groove. One end of the needle tube (2) is equipped with a first needle shaft (1), and the first tongue spring (3) is located above the first needle shaft (1). The other end of the needle tube (2) is equipped with a second needle shaft (5). A spring (4) is provided inside the needle tube (2), and the two ends of the spring (4) are in contact with the tail of the first needle shaft (1) and the tail of the second needle shaft (5), respectively.

2. The replaceable needle shaft type test probe as described in claim 1, characterized in that, The needle tube (2) is provided with a second thread groove and a second tongue spring (6) is provided on the needle tube (2). The second tongue spring (6) is located above the second thread groove, and one end of the second tongue spring (6) is bent downwards and can be elastically bent into the second thread groove. The second tongue spring (6) is located above the second needle shaft (5).

3. The replaceable needle shaft test probe as described in claim 1 or 2, characterized in that, The needle tube (2) is provided with an intermediate needle shaft (7), which is located between the tail of the first needle shaft (1) and one end of the spring (4).

4. The replaceable needle shaft type test probe as described in claim 3, characterized in that, The intermediate needle shaft (7) is spherical or mushroom-shaped.

5. The replaceable needle shaft type test probe as described in claim 3, characterized in that, The intermediate needle shaft (7) has a groove at one end near the spring (4).

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