Highly stable test probes
By incorporating limiting components and limiting rings into the test probe, the problem of spring bending during compression is solved, achieving stable contact between the spring and the probe body, thus improving the accuracy of the test and the stability of the connection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 东莞市台易电子科技有限公司
- Filing Date
- 2025-06-18
- Publication Date
- 2026-06-09
Smart Images
Figure CN224341582U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of test probes, and more specifically to a highly stable test probe. Background Technology
[0002] Existing test probes typically have a spring connected to one end of the needle, and then a tube is fitted over the needle and spring. During testing, the needle retracts after contacting the test product. The part of the existing probe that contacts the spring usually has a tapered design. Although this design is easy to process, the spring will bend when compressed. This tapered design causes the spring and the probe to not maintain sufficient contact, thus making it impossible for the probe tip to maintain a stable contact force. Utility Model Content
[0003] To address the aforementioned problems, this utility model provides a high-stability test probe, comprising a tube body, a first needle body fixedly connected to one end of the tube body, the first needle body being used to contact the product under test, and a second needle body connected to the other end of the tube body away from the first needle body, the second needle body being used to connect to a circuit board, the tube body partially enclosing the first and second needle bodies respectively, and the second needle body being movable along the inner wall of the tube body, a spring being provided between the first and second needle bodies, and a limiting member extending along the tube body at the end of the second needle body closer to the first needle body, one end of the spring being sleeved on the limiting member.
[0004] Furthermore, the limiting member includes a sidewall protruding along the second needle body toward the first needle body, and a tapered portion connecting the sidewall, one end of the spring being sleeved on the sidewall, and the tapered portion extending into the interior of the spring.
[0005] Furthermore, a second limiting ring protrudes outward on the outer wall of the second needle body, and the end of the tube body near the second needle body bends inward to form a curved portion.
[0006] Furthermore, the first needle body includes a contact portion and a wrapping portion, wherein the contact portion is located outside the tube body and the wrapping portion is wrapped by the tube body.
[0007] Furthermore, a first limiting ring protrudes outward on the outer wall between the contact portion and the wrapping portion. When the first needle body is connected to the tube body, the first limiting ring abuts against the tube wall of the tube body.
[0008] Furthermore, an annular limiting groove is provided on the outer wall of the wrapping part, and several protrusions that can cooperate with the limiting groove are raised on the inner wall of the tube body. When the wrapping part is wrapped by the tube body, the protrusions are embedded in the limiting groove.
[0009] Furthermore, the number of protrusions is four, and they are spaced 90 degrees apart.
[0010] Furthermore, the contact portion is provided with several tapered portions.
[0011] Compared with the prior art, the beneficial effects of this utility model are:
[0012] This application provides a limiting element at one end of the second needle body near the first needle body, and one end of the spring is sleeved on the limiting element. Compared with the prior art where the spring also has a conical surface contact, this allows the spring to maintain a more stable contact with the second needle body during compression, thereby ensuring the accuracy of the test.
[0013] Additional aspects and advantages of this invention will be set forth in the description which follows, and some will be obvious from the description or may be learned by practice of the invention. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is an exploded view of the overall structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the structure of the tube body and the second needle body of this utility model;
[0017] Figure 3 This is a schematic diagram of the tube body and the first needle body of this utility model;
[0018] Figure 4 This is a cross-sectional view of the overall structure of this utility model.
[0019] The reference numerals and names in the figure are as follows:
[0020] Tube body 100, first needle body 200, second needle body 300, spring 400, limiting member 310, side wall 311, cone portion 312, second limiting ring 320, bending portion 110, contact portion 210, wrapping portion 220, first limiting ring 230, limiting groove 221, protrusion 120, cone-shaped portion 211. Detailed Implementation
[0021] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0022] The present invention will now be described in more detail. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them.
[0023] In the description of this utility model, it should be noted that directional terms such as "front, back, up, down, left, right," "horizontal, vertical, horizontal," and "top, bottom," indicating directions or positional relationships, are generally based on the directions or positional relationships shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or component referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself. In the description of this utility model, it should be noted that the use of terms such as "first" and "second" to define components is merely for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this utility model. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0024] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention.
[0025] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.
[0026] The preferred embodiments of this utility model will now be further described with reference to the accompanying drawings, such as... Figure 1 and Figure 4As shown, a high-stability test probe includes a tube body 100. A first needle body 200 is provided at one end of the tube body 100 and is fixedly connected to the tube body 100. The first needle body 200 is used to contact the product under test. A second needle body 300 is provided at the other end of the tube body 100 away from the first needle body 200 and is used to connect to a circuit board. The tube body 100 partially encloses the first needle body 200 and the second needle body 300, and the second needle body 300 can move along the inner wall of the tube body 100. A spring 400 is provided between the first needle body 200 and the second needle body 300. A limiting member 310 extends along the tube body 100 at the end of the second needle body 300 near the first needle body 200, and one end of the spring 400 is sleeved on the limiting member 310.
[0027] When testing is required, the first needle 200 contacts the product under test, and the second needle 300 is connected to the circuit board. When the first needle 200 contacts the product under test, since the first needle 200 is fixedly connected to the tube 100, the first needle 200 and the tube 100 move downward as a whole. One end of the spring 400 inside the tube 100 is compressed, thereby driving the other end to provide pressure to the second needle 300. Since the second needle 300 is provided with a limiting member 310, and one end of the spring 400 is sleeved on the limiting member 310, the spring 400 can maintain stable contact with the second needle 300 during the compression process, thereby ensuring that the second needle 300 can move stably inside the tube 100.
[0028] This application provides a limiting member 310 at one end of the second needle body 300 near the first needle body 200, and one end of the spring 400 is sleeved on the limiting member 310. Compared with the prior art where the spring 400 also has a conical surface contact, this allows the spring 400 to maintain a more stable contact with the second needle body 300 during compression, thereby ensuring the accuracy of the test.
[0029] Furthermore, based on the above embodiments, such as Figure 2 and Figure 4 As shown, the limiting member 310 includes a sidewall 311 protruding along the second needle body 300 toward the first needle body 200, and a tapered portion 312 connecting the sidewall 311. One end of the spring 400 is sleeved on the sidewall 311, and the tapered portion 312 extends into the interior of the spring 400. In this way, when the spring 400 is compressed and deviates, since the spring 400 is sleeved on the sidewall 311, the sidewall 311 will limit the deviation of the spring 400, thereby ensuring the stability of the contact between the spring 400 and the second pillow.
[0030] Furthermore, based on the above embodiments, such as Figure 2 and Figure 4 As shown, a second limiting ring 320 protrudes outward on the outer wall of the second needle body 300. The end of the tube 100 near the second needle body 300 is bent inward to form a bent portion 110. When the spring 400 is compressed, the bent portion 110 can block one side of the second limiting ring 320, thereby preventing the second needle body 300 from coming out of the tube 100.
[0031] Furthermore, based on the above embodiments, such as Figure 3 and Figure 4 As shown, the first needle body 200 includes a contact portion 210 and a wrapping portion 220. The contact portion 210 is located outside the tube body 100, and the wrapping portion 220 is wrapped by the tube body 100. A first limiting ring 230 protrudes outward on the outer wall between the contact portion 210 and the wrapping portion 220. When the first needle body 200 is connected to the tube body 100, the first limiting ring 230 abuts against the tube wall of the tube body 100, thereby preventing the first needle body 200 from entering the tube body 100 when it comes into contact with the product being tested.
[0032] Furthermore, based on the above embodiments, such as Figure 3 and Figure 4 As shown, an annular limiting groove 221 is provided on the outer wall of the wrapping part 220, and several protrusions 120 protrude on the inner wall of the tube body 100, which can cooperate with the limiting groove 221. When the wrapping part 220 is wrapped by the tube body 100, the protrusions 120 are embedded in the limiting groove 221, thereby further improving the stability of the connection between the first needle body 200 and the tube body 100.
[0033] Furthermore, based on the above embodiment, the number of protrusions 120 is four and they are spaced 90 degrees apart, so that the connection between the first needle body 200 and the tube body 100 is more stable.
[0034] Furthermore, based on the above embodiments, such as Figure 3 and Figure 4 As shown, the contact portion 210 is provided with a plurality of tapered portions 211, which allow the contact portion 210 to make more precise contact with the contact points of the product under test.
[0035] The details of the above exemplary embodiments are provided, and the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and the scope of the present invention is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all changes falling within the meaning and scope of equivalents of the claims be included within the present invention.
Claims
1. A highly stable test probe, characterized in that, The device includes a tube body (100), one end of which is provided with a first needle body (200), which is fixedly connected to the tube body (100) and is used to contact the product under test. The other end of the tube body (100), away from the first needle body (200), is provided with a second needle body (300), which is used to connect to a circuit board. The tube body (100) is connected to both the first needle body (200) and the second needle body (300). The two needle bodies (300) form a partial enclosure, and the second needle body (300) can move along the inner wall of the tube body (100) inside the tube body (100). A spring (400) is provided between the first needle body (200) and the second needle body (300). A limiting member (310) extends along the tube body (100) at one end of the second needle body (300) near the first needle body (200), and one end of the spring (400) is sleeved on the limiting member (310).
2. The high-stability test probe according to claim 1, characterized in that, The limiting member (310) includes a sidewall (311) protruding along the second needle body (300) toward the first needle body (200), and a cone (312) connecting the sidewall (311), one end of the spring (400) being sleeved on the sidewall (311), and the cone (312) extending into the spring (400).
3. The high-stability test probe according to claim 2, characterized in that, A second limiting ring (320) protrudes outward on the outer wall of the second needle body (300), and a curved part (110) is formed by bending one end of the tube body (100) near the second needle body (300) towards the inside of the tube body (100).
4. The high-stability test probe according to claim 1, characterized in that, The first needle body (200) includes a contact portion (210) and a wrapping portion (220), the contact portion (210) being located outside the tube body (100), and the wrapping portion (220) being wrapped by the tube body (100).
5. The high-stability test probe according to claim 4, characterized in that, A first limiting ring (230) protrudes outward on the outer wall between the contact portion (210) and the wrapping portion (220). When the first needle body (200) is connected to the tube body (100), the first limiting ring (230) abuts against the tube wall of the tube body (100).
6. The high-stability test probe according to claim 5, characterized in that, An annular limiting groove (221) is provided on the outer wall of the wrapping part (220), and a number of protrusions (120) that can cooperate with the limiting groove (221) are raised on the inner wall of the tube body (100). When the wrapping part (220) is wrapped by the tube body (100), the protrusions (120) are embedded in the limiting groove (221).
7. The high-stability test probe according to claim 6, characterized in that, The number of protrusions (120) is 4, and they are spaced 90 degrees apart.
8. The high-stability test probe according to claim 7, characterized in that, The contact portion (210) is provided with a plurality of tapered portions (211).