Spring needle and electronic device
By employing a double-pin shaft structure and elastic element connection in the spring pin, the problem of concentricity misalignment of the spring pin under high-frequency vibration environment is solved, achieving stable connection and high current transmission, and improving the mechanical and electrical performance of the product.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN XINWEIXING ELECTRONICS CO LTD
- Filing Date
- 2025-07-11
- Publication Date
- 2026-08-04
AI Technical Summary
Existing spring pins are prone to component concentricity misalignment under high-frequency vibration environments, leading to instantaneous power outages and signal interruptions.
It adopts a double needle shaft structure, in which the first needle shaft and the second needle shaft are axially inserted into the needle tube and connected by an elastic element. The elastic element is compressed and deformed under the action of external force to ensure that the concentricity of the needle shaft is not easily shifted. The needle tube guides the needle shaft axially, thus achieving a double guiding effect.
It effectively avoids the instantaneous breakage of the spring pin in harsh environments, improves mechanical and electrical performance, and ensures stable connection and high current transmission capability.
Smart Images
Figure CN224595850U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of connector technology, and in particular to a spring pin and electronic device. Background Technology
[0002] A spring-loaded probe is a basic spring-loaded probe. With the continuous development of technology, spring-loaded probes have been widely used in electronic products such as mobile phones, smart wearables, and smart home devices to achieve functions such as charging, discharging, and signal transmission. Existing spring-loaded probes typically consist of three basic components: a probe shaft, a spring, and a probe tube. In high-current spring-loaded probes, a ball is placed under the probe shaft, and the spring is located above the ball. This structure can handle high currents under normal conditions, but under high-frequency vibration conditions, the concentricity of the components can easily shift due to vibration. This can lead to problems such as momentary power outages and momentary signal interruptions, resulting in unreliable overall contact and unstable operation.
[0003] Therefore, there is an urgent need for a product that can solve the above problems. Utility Model Content
[0004] The purpose of this invention is to solve the technical problem that existing spring needles are prone to instantaneous breakage.
[0005] To solve the above-mentioned technical problems, this utility model provides a spring pin and an electronic device, which adopts the following technical solution:
[0006] The spring needle includes a needle tube, a first needle shaft and a second needle shaft, both axially inserted into the needle tube. The connecting end of the second needle shaft is movably inserted axially into the first needle shaft from the connecting end of the first needle shaft, and an elastic element abuts between the connecting end of the second needle shaft and the contact end of the first needle shaft. The contact ends of the first needle shaft and the contact ends of the second needle shaft can be movably extended and retracted from both ends of the needle tube, respectively.
[0007] Optionally, at least two of the needle tube, the first needle shaft, the second needle shaft, and the elastic element are arranged concentrically.
[0008] Optionally, the first section of the first needle shaft and the second section of the second needle shaft can both extend and retract from the corresponding ends of the needle tube, the outer diameters of the first middle section of the first needle shaft and the second middle section of the second needle shaft are adapted to the inner diameter of the needle tube so that the outer peripheral walls of the first middle section and the second middle section are in contact with the inner wall of the needle tube, and the first tail section of the second needle shaft is inserted into the first needle shaft.
[0009] Optionally, the diameter of the first tail segment is adapted to the inner diameter of the first needle shaft so that the outer peripheral wall of the first tail segment contacts the inner wall of the first needle shaft.
[0010] Optionally, the elastic element is a compression spring, the outer diameter of which is adapted to the inner diameter of the first needle shaft, so that the outer peripheral wall of the compression spring contacts the inner wall of the first needle shaft.
[0011] Optionally, the inner diameter of the first middle section near the first tail section is larger than the inner diameter of the other parts of the first needle shaft;
[0012] The second tail section of the first needle shaft includes a plurality of springs extending from the end of the first middle section and arranged circumferentially, and each spring gradually tilts towards the first tail section in a direction away from the first middle section, and the springs are movably abutting against the second middle section axially.
[0013] Optionally, the inner diameter of the second tail segment and the end furthest from the first middle segment is adapted to the first tail segment so that the inner wall of the second tail segment contacts the outer peripheral wall of the first tail segment.
[0014] Optionally, a first annular protrusion extends inward from one end of the needle tube, the first segment is movably inserted through the first annular protrusion, and the first middle segment is movably axially abutting against the first annular protrusion.
[0015] Optionally, a second annular protrusion extends inward from one end of the needle tube, the second first section is movably inserted through the second annular protrusion, and the second middle section is movably axially abutting against the second annular protrusion.
[0016] To solve the above-mentioned technical problems, this utility model also provides an electronic device, which adopts the following technical solution:
[0017] The electronic device includes a main body and the aforementioned spring pin, which is disposed within the main body.
[0018] Compared with the prior art, the spring pin and electronic device provided by this utility model have the following advantages:
[0019] The spring needle includes a needle tube, a first needle shaft, and a second needle shaft. When the contact ends of the first and second needle shafts are subjected to external force, the elastic element that elastically abuts between the connecting end of the second needle shaft and the contact end of the first needle shaft is compressed and undergoes elastic deformation, causing the contact ends to retract into the needle tube. Based on this, since both the first and second needle shafts are axially inserted into the needle tube, the needle tube provides axial guidance for the movement of the first and second needle shafts. Furthermore, the connecting end of the second needle shaft is movably inserted into the first needle shaft from its connecting end, providing mutual axial guidance for the relative movement of the first and second needle shafts. This dual guiding effect ensures that the concentricity of the components of the spring needle is not easily shifted when subjected to external force, effectively preventing instantaneous breakage and improving the product's mechanical and electrical performance. It maintains stable connection even in harsh environments and possesses high current transmission capability. Attached Figure Description
[0020] To more clearly illustrate the solutions in this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:
[0021] Figure 1 This is a longitudinal section schematic diagram of the spring pin in one embodiment of this utility model;
[0022] Figure 2 yes Figure 1 A three-dimensional explosion diagram of the spring needle.
[0023] The labels in the attached diagram are as follows:
[0024] 100. Spring needle;
[0025] 10. Needle tube; 11. First annular boss; 12. Second annular boss; 20. First needle shaft; 21. First head section; 22. First middle section; 23. Second tail section; 231. Spring; 30. Second needle shaft; 31. Second head section; 32. Second middle section; 321. Step; 33. First tail section; 40. Elastic element. Detailed Implementation
[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. For example, terms such as “length,” “width,” “upper,” “lower,” “left,” “right,” “front,” “rear,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer” indicate orientations or positions based on the orientations or positions shown in the accompanying drawings and are merely for ease of description and should not be construed as limiting the invention.
[0027] The terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this utility model are intended to cover non-exclusive inclusion; the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish different objects, not to describe a specific order. "A plurality of" means two or more, unless otherwise explicitly specified.
[0028] In the description, claims, and accompanying drawings of this utility model, when an element is referred to as "fixed to," "mounted to," "set on," or "connected to" another element, it can be directly or indirectly located on that other element. For example, when an element is referred to as "connected to" another element, it can be directly or indirectly connected to that other element.
[0029] Furthermore, the reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0030] This utility model embodiment provides a spring pin 100, such as Figure 1 and Figure 2 As shown, the spring needle 100 includes a needle tube 10, a first needle shaft 20, and a second needle shaft 30. Both the first needle shaft 20 and the second needle shaft 30 can be axially inserted into the needle tube 10. The connecting end of the second needle shaft 30 is movably inserted axially into the first needle shaft 20 from the connecting end of the first needle shaft 20. An elastic element 40 can elastically abut against the contact end of the first needle shaft 20, so that when the contact end of the first needle shaft 20 and the second needle shaft 30 is subjected to an external force, the elastic element 40 will be compressed and elastically deformed, and the contact end of the two will retract into the needle tube 10; conversely, when the external force on the contact end of the first needle shaft 20 and the second needle shaft 30 is removed, the elastic element 40 will return to its original shape, and the contact end of the two will extend out of the needle tube 10.
[0031] Since the first needle shaft 20 and the second needle shaft 30 are axially inserted into the needle tube 10, the needle tube 10 can guide the axial movement of the first needle shaft 20 and the second needle shaft 30, effectively preventing radial displacement between them when they move axially. Furthermore, since the connecting end of the second needle shaft 30 is movably axially inserted into the first needle shaft 20 from its connecting end, the first needle shaft 20 can guide the second needle shaft 30 axially when the first needle shaft 20 and the second needle shaft 30 move relative to each other axially, and conversely, the second needle shaft 30 can also guide the first needle shaft 20 axially.
[0032] It should be noted that the contact end of the first needle shaft 20 mentioned in this specification refers to the end that can extend out of the needle tube 10 and directly contact external devices, and the contact end of the second needle shaft 30 is the same; the connecting end of the first needle shaft 20 refers to the end that is always inside the needle tube 10 and has a direct connection relationship with at least some of the components inside the needle tube 10, and the connecting end of the second needle shaft 30 is the same.
[0033] In summary, compared with the prior art, the spring pin 100 has at least the following beneficial effects:
[0034] When the contact ends of the first needle shaft 20 and the second needle shaft 30 are subjected to external force, the elastic element 40 that elastically abuts between the connecting end of the second needle shaft 30 and the contact end of the first needle shaft 20 is compressed and undergoes elastic deformation, causing the contact ends to retract into the needle tube 10. Based on this, since both the first needle shaft 20 and the second needle shaft 30 are axially inserted into the needle tube 10, the needle tube 10 provides axial guidance for the movement of the first needle shaft 20 and the second needle shaft 30. Furthermore, the connecting end of the second needle shaft 30 is movably inserted into the first needle shaft 20 from its connecting end, providing mutual axial guidance for the relative movement of the first needle shaft 20 and the second needle shaft 30. This dual guiding effect ensures that the concentricity of the components of the spring needle 100 is not easily shifted when subjected to external force, effectively preventing instantaneous breakage, improving the product's mechanical and electrical performance, ensuring stable connection even in harsh environments, and possessing high current transmission capability.
[0035] To enable those skilled in the art to better understand the present invention, the following will be described in conjunction with the appendix. Figures 1 to 2 The technical solutions in the embodiments of this utility model will be clearly and completely described.
[0036] In some embodiments, at least two of the needle tube 10, the first needle shaft 20, the second needle shaft 30, and the elastic element 40 may be concentrically arranged to ensure good concentricity of the product at the time of manufacture and to effectively prevent significant radial displacement of the aforementioned components even when the product is in a vibration environment, thus providing better anti-breakage capability at the time of manufacture. Preferably, the needle tube 10, the first needle shaft 20, the second needle shaft 30, and the elastic element 40 are all concentrically arranged to ensure optimal concentricity between the components at the time of manufacture.
[0037] It should be noted that, as Figure 1 As described in the axial direction, the first section 21 in this specification refers to the part of the first needle shaft 20 that can extend and retract from one end of the needle tube 10, the second tail section 23 refers to the part of the first needle shaft 20 that is furthest from that end of the needle tube 10, and the first middle section 22 refers to the part of the first needle shaft 20 between the first section 21 and the second tail section 23.
[0038] Similarly, the second first segment 31 refers to the part of the second needle shaft 30 that can extend and retract from the other end of the needle tube 10, the first tail segment 33 refers to the part of the second needle shaft 30 that is furthest from that end of the needle tube 10, and the second middle segment 32 refers to the part of the second needle shaft 30 between the second first segment 31 and the first tail segment 33.
[0039] In some embodiments, such as Figure 1 As shown, the first section 21 of the first needle shaft 20 and the second section 31 of the second needle shaft 30 can both extend and retract from the corresponding ends of the needle tube 10. That is, the first section 21 is the contact end of the first needle shaft 20, and the second section 31 is the contact end of the second needle shaft 30.
[0040] The outer diameters of the first middle section 22 of the first needle shaft 20 and the second middle section 32 of the second needle shaft 30 can both be adapted to the inner diameter of the needle tube 10, so that the outer peripheral walls of the first middle section 22 and the second middle section 32 contact the inner wall of the needle tube 10. The first tail section 33 of the second needle shaft 30 can be inserted into the first needle shaft 20. Understandably, the contact between the outer peripheral wall of the first middle section 22 and the inner wall of the needle tube 10 radially fixes the first needle shaft 20 relative to the needle tube 10, allowing the needle tube 10 to provide axial guidance for the first needle shaft 20, ensuring that the first needle shaft 20 does not undergo radial displacement when moving axially. The second needle tube 10 is similar and will not be described further here.
[0041] In some embodiments, such as Figure 1 and Figure 2As shown, the diameter of the first tail segment 33 can be adapted to the inner diameter of the first needle shaft 20, so that the outer peripheral wall of the first tail segment 33 contacts the inner wall of the first needle shaft 20. Understandably, the contact between the outer peripheral wall of the first tail segment 33 and the inner wall of the first needle shaft 20 fixes the first needle shaft 20 and the second needle shaft 30 radially relative to each other, ensuring that the first needle shaft 20 and the second needle shaft 30 can provide axial guidance to each other, and preventing radial displacement when the first needle shaft 20 and the second needle shaft 30 move axially.
[0042] In some embodiments, such as Figure 1 and Figure 2 As shown, the elastic element 40 can be a compression spring, the outer diameter of which can be adapted to the inner diameter of the first needle shaft 20 so that the outer peripheral wall of the compression spring contacts the inner wall of the first needle shaft 20. Understandably, the contact between the outer peripheral wall of the compression spring and the inner wall of the first needle shaft 20 ensures that when the compression spring is compressed, it will not deform radially due to the constraint of the inner wall of the first needle shaft 20, thus ensuring the concentricity of the elastic element 40.
[0043] In some embodiments, such as Figure 1 and Figure 2 As shown, the inner diameter of the first middle section 22 near the first tail section 33 can be larger than the inner diameter of other parts of the first needle shaft 20, so that there is a radial distance between this part of the first middle section 22 and the first tail section 33 of the second needle shaft 30. Based on this, the second tail section 23 of the first needle shaft 20 includes a plurality of springs 231, each spring 231 extending from the end of the first middle section 22, and each spring 231 being circumferentially arranged along the end edge of the first middle section 22. Each spring 231 gradually tilts towards the first tail section 33 in a direction away from the first middle section 22, so that the inner diameter of the second tail section 23 gradually decreases in the direction away from the first middle section 22.
[0044] The spring 231 is movably abutted axially against the second middle section 32 to limit the relative movement distance between the first needle shaft 20 and the second needle shaft 30, effectively preventing insufficient or excessive compression of the elastic element 40. Understandably, since the diameter of the first tail section 33 is smaller than the diameter of the second middle section 32, a step 321 is formed on one side of the second middle section 32 connected to the first tail section 33, and each spring 231 abuts against this step 321.
[0045] Specifically, such as Figure 1 and Figure 2 As shown, the first needle shaft 20 can be a claw spring structure, which has stable and reliable contact, good durability, and can provide a large contact pressure. It is suitable for high current and voltage applications and has excellent resistance to instantaneous interruption.
[0046] In some embodiments, such as Figure 1 and Figure 2As shown, the inner diameter of the end of the second tail segment 23 furthest from the first middle segment 22 can be adapted to the first tail segment 33 so that the inner wall of the second tail segment 23 contacts the outer peripheral wall of the first tail segment 33. Understandably, the contact between the inner wall of the second tail segment 23 and the outer peripheral wall of the first tail segment 33 fixes the first needle shaft 20 and the second needle shaft 30 radially relative to each other, ensuring that the first needle shaft 20 and the second needle shaft 30 can provide axial guidance to each other, and preventing radial displacement when the first needle shaft 20 and the second needle shaft 30 move axially.
[0047] In some embodiments, such as Figure 1 and Figure 2 As shown, a first annular protrusion 11 is formed at one end of the needle tube 10, extending radially inward. A first section 21 is movably inserted through the first annular protrusion 11, and a first middle section 22 is movably axially abutted against the first annular protrusion 11 to restrict the first needle shaft 20 so that only the first section 21 can extend out of the needle tube 10, that is, to restrict the distance by which the contact end of the first needle shaft 20 extends out of the needle tube 10.
[0048] In some embodiments, such as Figure 1 and Figure 2 As shown, a second annular protrusion 12 is formed at one end of the needle tube 10, extending radially inward. The second first section 31 is movably inserted through the second annular protrusion 12, and the second middle section 32 is movably axially abutted against the second annular protrusion 12, so as to restrict the second needle shaft 30 so that only the second first section 31 can extend out of the needle tube 10, that is, to restrict the distance by which the contact end of the second needle shaft 30 extends out of the needle tube 10.
[0049] Based on the aforementioned spring pin 100, this embodiment of the invention also provides an electronic device, which includes a main body and the aforementioned spring pin 100, wherein the spring pin 100 may be disposed within the main body. The electronic device may be a mobile phone, a smart wearable device, a tablet computer, etc.
[0050] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of the claims of the present invention.
Claims
1. A spring needle, characterized in that, The device includes a needle tube, a first needle shaft and a second needle shaft axially inserted into the needle tube. The connecting end of the second needle shaft is movably inserted axially into the first needle shaft from the connecting end of the first needle shaft, and an elastic element abuts between the connecting end of the second needle shaft and the contact end of the first needle shaft. The contact ends of the first needle shaft and the contact ends of the second needle shaft can be movably extended and retracted from both ends of the needle tube, respectively.
2. The spring pin according to claim 1, characterized in that, At least two of the needle tube, the first needle shaft, the second needle shaft, and the elastic element are arranged concentrically.
3. The spring pin according to claim 1 or 2, characterized in that, The first section of the first needle shaft and the second section of the second needle shaft can both extend and retract from the corresponding ends of the needle tube. The outer diameters of the first middle section of the first needle shaft and the second middle section of the second needle shaft are adapted to the inner diameter of the needle tube so that the outer peripheral walls of the first middle section and the second middle section are in contact with the inner wall of the needle tube. The first tail section of the second needle shaft is inserted into the first needle shaft.
4. The spring pin according to claim 3, characterized in that, The diameter of the first tail section is adapted to the inner diameter of the first needle shaft so that the outer peripheral wall of the first tail section contacts the inner wall of the first needle shaft.
5. The spring pin according to claim 1, characterized in that, The elastic element is a compression spring, and the outer diameter of the compression spring is adapted to the inner diameter of the first needle shaft so that the outer peripheral wall of the compression spring contacts the inner wall of the first needle shaft.
6. The spring pin according to claim 3, characterized in that, The inner diameter of the first middle section near the first tail section is larger than the inner diameter of the other parts of the first needle shaft; The second tail section of the first needle shaft includes a plurality of springs extending from the end of the first middle section and arranged circumferentially, and each spring gradually tilts towards the first tail section in a direction away from the first middle section, and the springs are movably abutting against the second middle section axially.
7. The spring pin according to claim 6, characterized in that, The inner diameter of the second tail segment, at the end furthest from the first middle segment, is adapted to the first tail segment so that the inner wall of the second tail segment contacts the outer peripheral wall of the first tail segment.
8. The spring pin according to claim 3, characterized in that, A first annular protrusion extends inward from one end of the needle tube, the first segment is movably inserted through the first annular protrusion, and the first middle segment is movably axially abutting against the first annular protrusion.
9. The spring pin according to claim 3, characterized in that, A second annular protrusion extends inward from one end of the needle tube, the second first section is movably inserted through the second annular protrusion, and the second middle section is movably axially abutting against the second annular protrusion.
10. An electronic device, characterized in that, It includes a main body and a spring pin according to any one of claims 1 to 9, wherein the spring pin is disposed within the main body.