An electronic fastener with conductive function
By designing a conductive fastener structure consisting of a screw, plug, limit plate, and rubber pad, the leakage problem of conductive fasteners under air and moisture corrosion was solved, achieving a highly reliable and low-impedance electrical connection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HAIMEN ZHENGDA ELECTRON CO LTD
- Filing Date
- 2025-05-30
- Publication Date
- 2026-05-26
AI Technical Summary
Existing conductive fasteners are prone to leakage under the corrosive effects of air and moisture, affecting long-term reliability.
A conductive fastener structure including a screw, a plug, a limiting plate, a handle, and a rubber pad is designed. The limiting plate rigidly connects the screw and the plug, the rubber pad acts as an insulating layer to isolate the external environment, the bottom end of the screw adopts a conical transition structure and forms multi-point contact with the conductive pad, and the handle provides stable installation and protection.
It improves the long-term reliability and connection strength of conductive fasteners, prevents loosening, keeps the contact interface dry, enhances the low impedance of electrical connections and the high reliability of mechanical connections, and adapts to vibration environments.
Smart Images
Figure CN224288595U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fastener technology, specifically to an electronic fastener with conductive function. Background Technology
[0002] Conductive electronic fasteners have a wide range of applications. In the production of circuit boards for various electronic devices such as computers, mobile phones, and tablets, conductive fasteners are used to connect various electronic components on the circuit board, ensuring that current can be stably transmitted between different components and guaranteeing the normal operation of the circuit.
[0003] Chinese Patent No. 202321006959.7 discloses a high-conductivity fastener terminal, including a plate body and a first connecting portion, a second connecting portion, and a third connecting portion disposed on the plate body. The first connecting portion, the second connecting portion, and the third connecting portion protrude from the surface of the plate body and are threadedly connected to nuts. The plate body is provided with a first threaded hole, a second threaded hole, and a third threaded hole, which penetrate the plate body and communicate with the first connecting portion, the second connecting portion, and the third connecting portion, respectively. This invention uses three nuts to be screwed into the first connecting portion, the second connecting portion, and the third connecting portion, respectively.
[0004] When in use, the components of this invention are exposed to the air, making them susceptible to corrosion from air and moisture. After prolonged use, this can easily lead to electrical leakage. Utility Model Content
[0005] The purpose of this invention is to provide an electronic fastener with conductive function to solve the problems raised in the prior art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: an electronic fastener with conductive function, comprising a conductive fastener: the conductive fastener consists of a screw, a plug, and a handle, a limiting plate is provided between the screw and the plug, the limiting plate is integrally formed with the plug and the screw, a slot is provided in the middle of the handle, the plug is inserted into the slot, a groove is provided on the upper side of the handle, a threaded hole is provided at the upper end of the plug, and a fixing bolt is rotatably installed inside the threaded hole.
[0007] Preferably, the bottom end of the screw is provided with a frustum-shaped head, and the frustum-shaped head and the screw are integrally formed.
[0008] Preferably, the plug and slot have rectangular cross-sections.
[0009] Preferably, a rubber pad is provided inside the slot, and the rubber pad is attached to the inside of the slot with adhesive.
[0010] Preferably, the outer side of the handle is provided with serrations, and the serrations are integrally formed with the handle.
[0011] Preferably, a conductive pad is provided on the outside of the screw, and the conductive pad is sleeved on the outside of the screw.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] 1. The handle is designed to increase the uniformity of the screw tip, making it easier to install and fix the screw. It also provides protection for the upper part of the screw.
[0014] 2. The rubber pad inside the slot compensates for the manufacturing tolerances of the plug and the slot through elastic deformation, forming a radial clamping force to prevent loosening. At the same time, the rubber pad, as an insulating layer, can isolate the external environment from the corrosion of the internal conductive structure. Its microporous structure can also absorb moisture, keep the contact interface dry, and improve long-term reliability.
[0015] 3. The frustum-shaped head at the bottom of the screw adopts a conical transition structure. During installation, the conical guide automatically aligns with the threaded hole, reducing installation resistance. At the same time, this structure reduces local pressure by increasing the contact area, preventing plastic deformation of the threaded hole base material due to stress concentration, and ensuring connection strength and conductivity.
[0016] 4. The conductive pad on the screw adopts a ring structure. During the tightening process, it forms multi-point contact with the surface of the connected parts through elastic deformation. Its thickness design needs to meet the elastic deformation range of 15%-20% of the compression amount, which can not only ensure the continuity of conductivity, but also compensate for the micro-unevenness of the surface of the connected parts. Attached Figure Description
[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0018] Figure 1 This is a schematic diagram of the structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the separated structure of this utility model;
[0020] Figure 3 This is a schematic diagram of the screw structure of this utility model;
[0021] Figure 4 This is a schematic diagram of the handle of this utility model.
[0022] In the diagram: 1. Conductive fastener; 2. Screw; 3. Frustum head; 4. Conductive pad; 5. Handle; 6. Fixing bolt; 7. Limiting plate; 8. Plug; 9. Threaded hole; 10. Slot; 11. Rubber pad; 12. Groove; 13. Serration. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 In this embodiment of the present invention, an electronic fastener with conductive function includes a conductive fastener 1, which is composed of a screw 2, a plug 8 and a handle 5. A limiting plate 7 is provided between the screw 2 and the plug 8. The limiting plate 7 is integrally formed with the plug 8 and the screw 2. A slot 10 is provided in the middle of the handle 5. The plug 8 is inserted into the slot 10. A groove 12 is provided on the upper side of the handle 5. A threaded hole 9 is provided at the upper end of the plug 8. A fixing bolt 6 is rotatably installed in the threaded hole 9.
[0025] The bottom end of the screw 2 is provided with a frustum-shaped head 3, which is integrated with the screw 2. The frustum-shaped head 3 at the bottom end of the screw 2 adopts a conical transition structure. During installation, it automatically centers the threaded hole 9 through the guiding effect of the conical surface, reducing installation resistance. At the same time, this structure reduces local pressure by increasing the contact area, avoiding plastic deformation of the threaded hole 9 base material due to stress concentration, and ensuring connection strength and conductivity.
[0026] The plug 8 and the slot 10 have rectangular cross-sections. The rectangular cross-sections of the plug 8 and the slot 10 form an anti-rotation structure to ensure stable alignment of the contact interface when the plug 8 is inserted. A rubber pad 11 is provided inside the slot 10. The rubber pad 11 is attached to the inside of the slot 10 with adhesive. The rubber pad 11 inside the slot 10 compensates for the manufacturing tolerances of the plug 8 and the slot 10 through elastic deformation, forming a radial clamping force to prevent loosening. At the same time, the rubber pad 11 acts as an insulating layer to isolate the external environment from the corrosion of the internal conductive structure. Its microporous structure can also absorb moisture, keep the contact interface dry, and improve long-term reliability.
[0027] The outer side of the handle 5 is provided with serrations 13, which are integrated with the handle 5. The serrations 13 on the outer side of the handle 5 increase the coefficient of friction and provide a 30%-50% torque enhancement effect during manual operation. The triangular cross-section design of the serrations 13 can evenly distribute the force to the fingertips, reduce fatigue during long-term operation, and conform to the ergonomic grip characteristics.
[0028] A conductive pad 4 is provided on the outside of the screw 2. The conductive pad 4 is sleeved on the outside of the screw 2. The conductive pad 4 on the screw 2 adopts a ring structure. During the fastening process, it forms multi-point contact with the surface of the connected parts through elastic deformation. Its thickness design needs to meet the elastic deformation range of 15%-20% of the compression amount, so as to ensure the continuity of conductivity and compensate for the micro-unevenness of the surface of the connected parts.
[0029] The working principle and usage process of this utility model: The conductive fastener 1, composed of a screw 2, a plug 8, and a handle 5, is rigidly connected to the screw 2 and the plug 8 through an integrated limiting plate 7, ensuring the continuity of the two in the conductive path. The limiting plate 7 serves as a mechanical positioning structure to prevent the plug 8 from being over-inserted, and also forms an intermediate node for current conduction, realizing a low-impedance conductive path from the screw 2 to the plug 8. The fixing bolt 6, which is rotated and installed in the threaded hole 9 of the plug 8, generates axial preload through a screw pair. When the preload reaches the design value, the head of the fixing bolt 6 and the groove 12 of the handle 5 form a mechanical interlock. This structure can provide anti-loosening torque in a vibration environment. The handle is designed to increase the uniformity of the screw tip, facilitating the installation and fixing of the screw. At the same time, the handle can protect the upper part of the screw. Through material selection (such as copper alloy conductors, stainless steel fasteners), surface treatment (such as silver plating for corrosion resistance), and structural optimization (such as chamfering to prevent stress concentration), the components together achieve low electrical impedance (<5mΩ) and high mechanical reliability (vibration fatigue life >10^6). (times) and environmental adaptability (salt spray test > 1000 hours).
[0030] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. An electronic fastener with conductive function, comprising a conductive fastener (1), characterized in that: The conductive fastener (1) consists of a screw (2), a plug (8) and a handle (5). A limiting plate (7) is provided between the screw (2) and the plug (8). The limiting plate (7) is integrally formed with the plug (8) and the screw (2). A slot (10) is provided in the middle of the handle (5). The plug (8) is inserted into the slot (10). A groove (12) is provided on the upper side of the handle (5). A threaded hole (9) is provided at the upper end of the plug (8). A fixing bolt (6) is rotatably installed inside the threaded hole (9).
2. The electronic fastener with conductive function according to claim 1, characterized in that: The bottom end of the screw (2) is provided with a frustum head (3), and the frustum head (3) and the screw (2) are integrally formed.
3. The electronic fastener with conductive function according to claim 1, characterized in that: A rubber pad (11) is provided inside the slot (10), and the rubber pad (11) is attached to the inside of the slot (10) with adhesive.
4. The electronic fastener with conductive function according to claim 1, characterized in that: A rubber pad (11) is provided inside the slot (10), and the rubber pad (11) is attached to the inside of the slot (10) with adhesive.
5. An electronic fastener with conductive function according to claim 1, characterized in that: The handle (5) has serrations (13) on its outer side, and the serrations (13) are integrally formed with the handle (5).
6. An electronic fastener with conductive function according to claim 1, characterized in that: A conductive pad (4) is provided on the outside of the screw (2), and the conductive pad (4) is sleeved on the outside of the screw (2).