Spring contact for electrical connection

Abstract

The utility model relates to the technical field of electric contact, concretely relates to a spring contact finger for electrical connection, including connection subassembly, still including the installation pipe in connection subassembly, the installation pipe number is two and position corresponds, and installation pipe outside surface is provided with protection subassembly, protection subassembly includes long protection round shell, long protection round shell left side surface sets up and installs round hole, installs round hole inner wall sliding connection in one side installation pipe outside surface, provides the basis of accurate butt joint for electrical connection through two position corresponding installation pipe, ensures the stability and accuracy of connection, the protection subassembly set up in installation pipe outside can effectively isolate outside dust, moisture and other impurities, avoid its erosion to internal electrical connection structure, prolong the life, the convenience of installation operation has been improved, has strengthened the adaptability and protection reliability of overall structure under different working conditions simultaneously, realized the effect that maintains electrical connection continuously stable.

Description

Technical Field

[0001] This utility model relates to the field of electrical contact technology, and in particular to a spring contact finger for electrical connection. Background Technology

[0002] In electrical equipment connection systems, the performance of contact fingers directly affects equipment reliability. Traditional contact fingers lack protection in complex environments, are susceptible to corrosion and contamination, and have shortened lifespans. Furthermore, existing contact finger protection structures have poor compatibility with conductive components, leading to inconvenient assembly and maintenance, and making it difficult to meet the high reliability and long lifespan connection requirements of fields such as high-voltage switches and new energy equipment.

[0003] Patent CN220358373U discloses a spring contact finger for electrical connection, including a moving contact and a stationary contact. One end of the moving contact is inserted into the interior of the stationary contact, and a conductive spring is provided between the moving contact and the stationary contact. This invention features a minimalist structure, with the stationary contact consisting only of a conductive base and a conductive spring. This reduces the number of parts and assembly, lowers costs, simplifies processing and installation, and facilitates widespread adoption. The inclined coil spring can transmit strong current in a small space, making it suitable for various static and dynamic medium-high voltage environments, thus improving equipment operational reliability.

[0004] While existing spring-loaded electrical connection fingers, by using a conductive base and a conductive spring, significantly reduce the number of parts and assembly work, lower costs, and simplify processing and installation requirements, making them more suitable for widespread adoption, and with the ability to transmit high currents in confined spaces, suitable for various static or dynamic medium- and high-voltage environments, they face several prominent problems in practical use. Specifically, the sealing performance of the overall structure is not specified. In humid, dusty, or corrosive environments, moisture and impurities may cause poor contact or corrosion. Furthermore, the ease of disassembly for maintenance is not mentioned. If the component is not detachable, the entire unit must be replaced once the spring ages or the contacts wear, increasing maintenance costs. Therefore, to address these shortcomings of existing technology, we urgently need an innovative spring-loaded electrical connection finger to solve these problems. Utility Model Content

[0005] The purpose of this utility model is to provide a spring contact finger for electrical connection, which solves the problem of poor sealing performance of the overall structure, and the possibility of poor contact or corrosion due to water vapor and impurities invading in humid, dusty or corrosive gas environments.

[0006] To achieve the above objectives, this utility model provides a spring contact finger for electrical connection, including a connection assembly.

[0007] It also includes mounting tubes in the connecting components, with two mounting tubes in corresponding positions, and protective components provided on the outer surface of the mounting tubes;

[0008] The protective component includes a long protective circular shell, with an installation circular hole on the left side surface of the long protective circular shell, and the inner wall of the installation circular hole is slidably connected to the outer surface of a mounting tube on one side.

[0009] The long protective round shell has an internal threaded groove on its inner wall, and a short protective round shell is movably connected to the inner wall of the long protective round shell. The short protective round shell and the long protective round shell are made of the same flame-retardant polycarbonate material. The outer surface of the short protective round shell has an external threaded groove, which is screwed into the inner wall of the internal threaded groove.

[0010] Among them, a circular mounting plate is fixedly connected to the right side surface of the short protective circular shell. The side surface of the circular mounting plate has a mounting side hole, which is fixedly connected to the outer surface of the mounting tube on the other side. The connection between the mounting side hole and the outer surface of the mounting tube is coated with high-temperature anaerobic adhesive.

[0011] Among them, spring contact finger bodies are fixedly connected to the inner walls of opposite sides of the two mounting tubes. The spring contact finger bodies are made of beryllium bronze alloy. The two spring contact finger bodies are positioned correspondingly, and rubber sealing rings are provided on the corresponding side surfaces of the two mounting tubes.

[0012] The outer surface of the right-side mounting tube is fixedly connected to a first protective plate, which is made of aluminum alloy sheet and anodized. The right side of the inner wall of the first protective plate is fixedly connected to the side surface of the right-side mounting tube.

[0013] The left side of the inner wall of the first protective plate is movably connected to the side surface of the left mounting tube, and a polytetrafluoroethylene guide ring is provided on the side surface of the left mounting tube.

[0014] This utility model discloses a spring contact finger for electrical connection. In this spring contact finger, two corresponding mounting tubes provide a precise connection basis for electrical connection, ensuring stability and accuracy. A protective component on the outside of the mounting tube effectively isolates external dust, moisture, and other impurities, preventing corrosion of the internal electrical connection structure and extending service life. A long protective circular shell slides through a mounting hole to one side of the mounting tube. This design allows the long protective circular shell to flexibly adjust its position according to the docking state of the mounting tube, ensuring comprehensive protection without hindering the relative movement of the mounting tube during connection, improving the convenience of installation and operation. It also enhances the adaptability and reliability of the overall structure under different working conditions, achieving a continuous and stable electrical connection. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0016] Figure 1 This is a front view structural schematic diagram of the spring contact finger for electrical connection according to an embodiment of this utility model.

[0017] Figure 2 This is a side view of the electrical connection spring contact finger according to an embodiment of the present invention.

[0018] Figure 3 This is a schematic diagram of the unfolded structure of the spring contact finger for electrical connection according to an embodiment of this utility model.

[0019] Figure 4 This is an embodiment of the electrical connection spring contact finger of this utility model. Figure 3 Enlarged schematic diagram of the structure at point A in the diagram.

[0020] Figure 5 This is a partial structural diagram of the spring contact finger for electrical connection according to an embodiment of the present invention.

[0021] 1. Connecting assembly; 101. Mounting tube; 102. Spring contact finger body; 103. First protective plate; 2. Protective assembly; 201. Long protective round shell; 202. Mounting round hole; 203. Internal threaded groove; 204. Short protective round shell; 205. External threaded groove; 206. Circular mounting plate; 207. Mounting side hole. Detailed Implementation

[0022] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0023] Please see Figures 1-5 A spring contact finger for electrical connection includes a connection assembly 1 and a mounting tube 101 in the connection assembly 1. There are two mounting tubes 101 and they are positioned correspondingly. A protective assembly 2 is provided on the outer surface of the mounting tube 101.

[0024] The protective component 2 includes a long protective circular shell 201. A mounting circular hole 202 is provided on the left side surface of the long protective circular shell 201. The inner wall of the mounting circular hole 202 is slidably connected to the outer surface of the mounting tube 101 on one side.

[0025] The connecting component 1 establishes the electrical connection foundation through two corresponding mounting tubes 101. The protective component 2 on the outside of the mounting tube 101 forms a physical barrier for the internal electrical connection structure. In the protective component 2, the long protective circular shell 201 is slidably connected to the outside of the mounting tube 101 on one side through the mounting circular hole 202 on the left side. When the mounting tube 101 undergoes relative displacement due to changes in operating conditions such as thermal expansion and contraction or vibration, the long protective circular shell 201 can slide synchronously along the surface of the mounting tube 101, always maintaining coverage and protection over the connection area of ​​the mounting tube 101. This prevents external impurities from entering and does not hinder the normal displacement of the mounting tube 101, ensuring the stability of the electrical connection.

[0026] Furthermore, the inner threaded groove 203 on the inner wall of the long protective round shell 201 is screwed into the outer threaded groove 205 on the outer side of the short protective round shell 204. Utilizing the adjustability of the threaded connection, the relative position of the short protective round shell 204 and the long protective round shell 201 can be changed by rotating the short protective round shell 204, thereby adapting to the connection requirements of installation pipes 101 of different lengths. At the same time, both use the same flame-retardant polycarbonate material, which not only ensures consistent insulation performance but also reduces deformation differences caused by temperature changes through material consistency. Combined with the tight engagement of the threads, this improves the overall sealing performance and structural stability of the protective component 2.

[0027] Furthermore, the short protective circular shell 204 is fixedly connected to the mounting tube 101 on the other side through the mounting side hole 207 of the circular mounting plate 206 on the right side. Combined with the sliding fit between the long protective circular shell 201 and the mounting tube 101 on one side, the protective assembly 2 forms an overall protective structure spanning the mounting tubes 101 on both sides. The high-temperature resistant anaerobic adhesive applied at the connection between the mounting side hole 207 and the mounting tube 101 can fill the gap and form a rigid seal after curing. This not only enhances the connection strength between the short protective circular shell 204 and the mounting tube 101, but also withstands the high-temperature environment during the operation of electrical equipment, preventing loosening caused by vibration, and further improving the reliability of the protective assembly 2.

[0028] Furthermore, the spring contact finger bodies 102 on the inner walls of the opposite sides of the two mounting tubes 101 are made of beryllium bronze alloy. Utilizing the high elasticity and conductivity of the material, when the two mounting tubes 101 are connected, the spring contact finger bodies 102 at corresponding positions can contact each other and generate elastic pressure, ensuring a stable electrical contact area and conductivity. The rubber sealing ring on the side surface of the mounting tubes 101 can undergo elastic deformation after the mounting tubes 101 are connected, filling the gap between the mounting tubes 101 and forming a double seal with the protective component 2, effectively preventing moisture, dust, etc. from entering the contact area of ​​the spring contact finger bodies 102, and avoiding poor contact caused by oxidation or contamination.

[0029] Furthermore, the first protective plate 103 on the outer side of the right mounting tube 101 is made of anodized aluminum alloy sheet, which is both lightweight and corrosion resistant. Its inner right side is fixedly connected to the right mounting tube 101, which can form mechanical protection for the exposed part of the right mounting tube 101 and prevent external forces from directly impacting the mounting tube 101. At the same time, the heat dissipation performance of the aluminum alloy material helps to conduct and diffuse the heat generated by the mounting tube 101 during operation, reduce local temperature rise, and ensure the thermal stability of the electrical connection.

[0030] Furthermore, the left side of the inner wall of the first protective plate 103 is movably connected to the left mounting tube 101. With the help of the polytetrafluoroethylene guide ring on the side surface of the left mounting tube 101, when the left mounting tube 101 moves relative to the other due to displacement, the guide ring can reduce the frictional resistance between the first protective plate 103 and the mounting tube 101, making the relative movement smoother and avoiding jamming or wear. At the same time, the movable connection structure allows the mounting tube 101 to extend or deflect within a certain range to adapt to the dimensional fluctuations caused by changes in working conditions, while the first protective plate 103 can still maintain overall protection for the mounting tubes 101 on both sides, taking into account both protection and structural adaptability.

[0031] Complete working process: During operation, in the initial state, the two corresponding mounting tubes 101 are in a state of waiting to be connected. In the protective component 2, the long protective round shell 201 is sleeved on the outside of one side mounting tube 101 through the left side mounting round hole 202. The short protective round shell 204 is screwed to the long protective round shell 201 through the external thread groove 205 and the internal thread groove 203. The short protective round shell 204 is fixed to the other side mounting tube 101 through the mounting side hole 207 of the right side round mounting plate 206. The high temperature anaerobic adhesive at the connection between the mounting side hole 207 and the mounting tube 101 has been cured to form a seal. The right side of the inner wall of the first protective plate 103 is fixed to the right side mounting tube 101, and the left side is movably connected to the left side mounting tube 101. The polytetrafluoroethylene guide ring on the side surface of the left side mounting tube 101 ensures smooth relative movement between the two. When making an electrical connection, the two mounting tubes 101 are pushed closer to each other. At this time, the long protective round shell 201 slides along the surface of one side of the mounting tube 101, while the short protective round shell 204 moves synchronously with the other side of the mounting tube 101. The long protective round shell 201 is adjusted in position through the threaded engagement, so that the protective component 2 always covers the connection area of ​​the two mounting tubes 101. As the mounting tubes 101 are connected, the beryllium bronze alloy material of the spring contact finger body 102 on the inner wall of their opposite sides comes into contact with each other and generates elastic pressure, forming a stable electrical connection. The rubber sealing ring on the side surface of the mounting tube 101 is deformed under pressure, forming a double seal with the protective component 2 to block external impurities. During equipment operation, if the mounting pipe 101 experiences relative displacement due to thermal expansion and contraction or vibration, the sliding connection between the long protective shell 201 and the mounting pipe 101, and the movable connection between the first protective plate 103 and the left mounting pipe 101, can synchronously adapt to the displacement. The polytetrafluoroethylene guide ring reduces frictional resistance. The long protective shell 201 and the short protective shell 204, made of flame-retardant polycarbonate material, are tightly interlocked by threads, and with the sealing effect of high-temperature anaerobic adhesive, the structural stability of the protective component 2 is ensured. The anodized aluminum alloy of the first protective plate 103 provides mechanical protection for the mounting pipe 101 and assists in heat dissipation, ultimately achieving continuous and stable operation of the electrical connection.

[0032] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art will understand that all or part of the processes for implementing the above embodiments and equivalent variations made in accordance with the claims of this application are still within the scope of this application.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A spring contact finger for electrical connection, comprising a connection assembly, characterized in that, It also includes mounting tubes in the connecting assembly, wherein there are two mounting tubes in corresponding positions, and a protective component is provided on the outer surface of the mounting tubes; The protective component includes a long protective circular shell, and a mounting hole is provided on the left side surface of the long protective circular shell. The inner wall of the mounting hole is slidably connected to the outer surface of a mounting tube on one side.

2. The spring contact finger for electrical connection as described in claim 1, characterized in that, The inner wall of the long protective round shell is provided with an internal threaded groove, and a short protective round shell is movably connected to the inner wall of the long protective round shell. The short protective round shell and the long protective round shell are made of the same flame-retardant polycarbonate material. The outer surface of the short protective round shell is provided with an external threaded groove, and the external threaded groove is screwed into the inner wall of the internal threaded groove.

3. The spring contact finger for electrical connection as described in claim 2, characterized in that, A circular mounting plate is fixedly connected to the right side surface of the short protective circular shell. An installation side hole is opened on the side surface of the circular mounting plate. The installation side hole is fixedly connected to the outer surface of the mounting tube on the other side. The connection between the installation side hole and the outer surface of the mounting tube is coated with high-temperature anaerobic adhesive.

4. The spring contact finger for electrical connection as described in claim 1, characterized in that, Two spring contact finger bodies are fixedly connected to the inner walls of opposite sides of the two mounting tubes. The spring contact finger bodies are made of beryllium bronze alloy. The two spring contact finger bodies are positioned correspondingly, and a rubber sealing ring is provided on a corresponding side surface of the two mounting tubes.

5. The spring contact finger for electrical connection as described in claim 1, characterized in that, A first protective plate is fixedly connected to the outer surface of the right mounting tube. The first protective plate is made of aluminum alloy sheet and is anodized. The right side of the inner wall of the first protective plate is fixedly connected to the side surface of the right mounting tube.

6. The spring contact finger for electrical connection as described in claim 5, characterized in that, The left side of the inner wall of the first protective plate is movably connected to the side surface of the left mounting tube, and a polytetrafluoroethylene guide ring is provided on the side surface of the left mounting tube.

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