A9 contact finger

Abstract

The invention relates to the technical field of conductive plugging, in particular to an A9 contact finger which comprises a bearing belt and a conductive contact, the surface of the bearing belt is connected with the conductive contact in a riveting mode, an X face is arranged on the upper side of the conductive contact, and a Y face is arranged on the outer side of the conductive contact. Various flexible plugging pieces can be formed, the problems that an integrated module is integrally installed in a cabinet body in a push-pull mode and is integrally pulled out of a power interface of the cabinet body during overhaul and maintenance are well solved, meanwhile, due to flexible connection, the shock resistance and the impact resistance are greatly improved, the watchband can meet the performance requirement of conventional gas insulation equipment, and the application range is wide. And a plurality of conventional watchband contact fingers and spring contact fingers can be replaced, the future environment-friendly dynamic heat requirement is met, the stroke is reduced, and the matching cost is reduced. Meanwhile, the contact finger single section has large current bearing capacity, the installation space needed by the contact finger is smaller, light weight and integration of equipment are better facilitated, and meanwhile the maintenance difficulty of the equipment is reduced.

Description

Technical Field

[0001] This invention relates to the field of conductive plugging and unplugging technology, specifically to an A9 contact finger. Background Technology

[0002] Currently, in key sectors such as energy, power transmission and transformation, electric vehicles, and industrial power, electrical equipment is rapidly developing towards miniaturization and integration. For example, compact substations in smart grids are significantly smaller than traditional equipment; the integration of on-board charger modules for new energy vehicles has reached a power density of 3.5 kW per cubic decimeter. This trend places stringent demands on equipment installation accuracy, space utilization, and ease of maintenance, especially posing significant challenges to component replacement and fault diagnosis in confined working environments.

[0003] With the upgrading of environmental regulations, gas-insulated equipment is rapidly transitioning to low-GWP environmentally friendly gases, such as replacing traditional SF6 with a C5F10O / CO2 mixed gas. Due to the reduced heat dissipation efficiency of the new gas and the parameter changes caused by the miniaturization of equipment structures, it is necessary to optimize the contact surface design to reduce contact resistance and meet the dynamic and thermal stability conditions under rated current. Traditional strap or spring contacts require an increase of more than 30% in the number of contacts to meet current-carrying requirements. This leads to increased operating stroke, higher material costs, and a chain reaction of problems such as increased assembly precision requirements and insufficient maintenance space. Therefore, we propose an A9 contact to solve these problems. Summary of the Invention

[0004] The purpose of this invention is to provide an A9 contact finger to address the problem mentioned in the background art that as current gas-insulated equipment gradually transforms towards miniaturization, integration, and environmental friendliness, and based on changes in parameters such as gas heat dissipation and new structures, it is necessary to increase the contact surface to reduce resistance and meet dynamic and thermal conditions. Conventional watch strap contact fingers or spring contact fingers need to be increased in number to meet the requirements, thereby increasing the stroke and supporting costs.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an A9 touch finger, comprising a carrier strip and conductive contacts, wherein the surface of the carrier strip is connected to the conductive contacts by riveting, the upper side of the conductive contacts is provided with an X-side, and the outer side of the conductive contacts is provided with a Y-side.

[0006] Preferably, a protrusion is formed on the Y-side of the conductive contact, and a connecting hole is provided on the carrier strip. The conductive contact is riveted to the connecting hole on the carrier strip through the protrusion.

[0007] Preferably, the bottom of the conductive contact is connected to a buckle, and the outer side of the carrier belt is connected to a toothed band. The conductive contact is riveted to the toothed band of the carrier belt by the buckle.

[0008] Preferably, the bearing belt is made of steel and has excellent elasticity.

[0009] Preferably, the bearing belt can be designed to have teeth on both sides, teeth on one side, or no teeth on both sides.

[0010] Preferably, the bearing belt has fixing holes inside.

[0011] Preferably, the conductive contact has good electrical and thermal conductivity, and a single section has a current carrying capacity of 80-110A.

[0012] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention can be assembled into various flexible plug-in components, effectively solving the problem of power interfaces for integrated modules that are pushed-pull into the cabinet and pulled out of the cabinet for maintenance. Simultaneously, due to the flexible connection, the shock and impact resistance is greatly improved. The strap can meet the performance requirements of conventional gas-insulated equipment and can replace multiple conventional strap contacts and spring contacts, also meeting future environmentally friendly dynamic and thermal requirements, reducing stroke and lowering supporting costs. Furthermore, each contact segment has a large current carrying capacity; when carrying the same current, the contact requires less installation space, which is more conducive to the lightweighting and integration of the equipment, while reducing the difficulty of maintenance. The number of contacts can be adjusted according to specific solutions to achieve a small space, low cost, and high performance effect.

[0013] 2. This invention utilizes a high-current flexible contact finger of a conductive plug-in component, which can be installed between plugs and sockets in various forms for operation. This high-current flexible contact finger has a certain insertion and extraction force during insertion and extraction, allowing for a certain installation error. The high-current structure gives the watchband contact finger a large amount of compression, resulting in significantly better contact resistance and greater insertion and extraction force than other structures, thus ensuring reliable conductivity. At the same time, this watchband contact finger has multiple application scenarios and can be used in connectors or in connection components of engineering equipment. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a front view of one of the riveting methods of the present invention; Figure 2 This is a reverse structural diagram of one of the riveting methods of the present invention; Figure 3 This is a front view of another riveting method of the present invention; Figure 4 This is a reverse view of another riveting method of the present invention; Figure 5 This is a schematic diagram of one arrangement method of the present invention; Figure 6 This is a schematic diagram of one arrangement method of the present invention; Figure 7 This is a schematic diagram of one arrangement method of the present invention; Figure 8 This is a schematic diagram of one arrangement method of the present invention; Figure 9 This is a schematic diagram of the double-sided bearing toothed belt of the present invention; Figure 10 This is a schematic diagram of the single-sided bearing toothed band of the present invention; Figure 11 This is a schematic diagram of the double-sided toothless bearing system of the present invention; Figure 12 This is a schematic diagram of a typical usage 1 of the present invention; Figure 13 This is a schematic diagram of a typical usage 2 of the present invention; Figure 14 This is a schematic diagram of typical usage 3 of the present invention; Figure 15 This is a schematic diagram of typical usage 4 of the present invention.

[0016] In the diagram: 1. Carrier strip; 2. Conductive contact; 3. X-side; 4. Y-side; 5. Protrusion; 6. Connecting hole; 7. Buckle; 8. Toothed band; 9. Fixing hole. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figure 1-15This invention provides an embodiment of an A9 contact finger, comprising a carrier strip 1 and conductive contacts 2. The conductive contacts 2 are made of copper, a metal with good conductivity, while the carrier strip 1 is made of stainless steel with good elasticity. The carrier strip 1 undergoes heat treatment after stamping to improve its elasticity and extend the contact finger's service life. The conductive contacts 2 connect two conductive contact surfaces, and the carrier strip 1 provides stable and durable elastic force. The conductive contacts 2 and the carrier strip 1 are assembled together using a special riveting method, ensuring tight contact and stability during use. Compared to other assembly methods, riveting offers higher efficiency, higher stability, and a longer service life, making the carrier strip 1 and conductive contacts 2 a single unit. The carrier strip 1 allows the conductive contacts 2 to fit tightly against the conductive contact surface, which can be a flat surface or a curved surface, further reducing the contact resistance of the flexible contact finger. To meet high current requirements, the conductive contact 2 undergoes surface treatment to ensure a smooth surface. The conductive contact 2 is typically plated with silver or gold. The upper side of the conductive contact 2 has an X-surface 3, and the outer side has a Y-surface 4. Both the upper and lower contact surfaces of the conductive contact 2 have unique shape characteristics, allowing connection between two contact planes or curved surfaces. When the middle part of the carrier band 1 is subjected to external force, it can undergo angular deformation around its own axis of rotation. The contact and carrier band 1 are connected by riveting, so the contact also undergoes angular changes based on the same axis of rotation. During this process, the carrier band 1 generates elastic force due to the angular deformation, which is transmitted from the conductive contact 2 to the conductive contact surface. This allows the top and bottom ends of the conductive contact 2 to fit tightly against the conductive contact surface. The special shape of the top and bottom ends of the conductive contact 2 effectively penetrates the oxide layer on the conductive contact surface, effectively reducing contact resistance and heat generation. This device combines a carrier belt 1 and conductive contacts 2, solving the problem that current gas insulation equipment is gradually transforming towards miniaturization, integration, and environmental protection. Based on changes in parameters such as gas heat dissipation and new structures, it is necessary to increase the contact surface to reduce resistance and meet dynamic and thermal conditions. Conventional watch strap contacts or spring contacts need to be increased in number to meet the requirements, thereby increasing the stroke and supporting costs.

[0019] Furthermore, a protrusion 5 is formed at the Y-side 4 of the conductive contact 2, and a connecting hole 6 is provided on the carrier strip 1. The conductive contact 2 is riveted to the connecting hole 6 at the carrier strip 1 through the protrusion 5. Figure 1 and Figure 2As shown, this structure is used to, through a specific mechanical device and structure, cause a portion of the material on the X-plane 3 of the conductive contact 2 to be displaced in the direction of the normal to the Y-plane 4 by extrusion, thereby creating a protrusion 5 on the Y-plane 4. This protrusion 5 passes through a pre-drilled connection hole 6 on the carrier belt 1. After passing through the connection hole 6 on the carrier belt 1, the material of this protrusion 5 is extruded by a specific mechanism or mechanical device, causing it to be evenly distributed around it, so that the conductive contact 2 can be firmly bonded to the carrier belt 1.

[0020] Furthermore, a buckle 7 is connected to the bottom of the conductive contact 2, and a toothed band 8 is connected to the outer side of the carrier band 1. The conductive contact 2 is riveted to the toothed band 8 at the carrier band 1 via the buckle 7. Figure 3 and Figure 4 As shown, this structure is used to cause the buckle 7 at the bottom of the conductive contact 2 to bend approximately 90° based on its bottom as the axis of rotation, thereby mounting it onto the carrier belt 1.

[0021] Furthermore, the load-bearing belt 1 is made of steel and has excellent elasticity. For example... Figure 14 As shown, this structure is designed to provide a long-term stable spring force through the material properties of the bearing belt 1. It has wide applicability and can be installed in a horizontal groove, or in a mandrel annular groove or on the inner groove of the mandrel sleeve.

[0022] Furthermore, the carrier band 1 can be designed with teeth 8 on both sides, teeth 8 on one side, or no teeth 8 on both sides. Increasing the number of carrier band 1 units increases the rated current, while reducing the number of conductive contacts 2, thus meeting basic performance requirements. Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the width X of conductive contact 2 and the pitch Y of carrier strip 1 have various specifications. For example... Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 , Figure 14 and Figure 15 As shown, this structure is used in various ways, including a basic form and multiple variations, and is suitable for different occasions.

[0023] Furthermore, the interior of the support belt 1 is provided with fixing holes 9. For example... Figure 2 As shown, this structure is designed to be fixed to a flat or curved surface by means of a fixing hole 9, which can be fixed with a fixing pin to ensure that it maintains a fixed posture during operation.

[0024] Furthermore, conductive contact 2 has good electrical and thermal conductivity, with a single section having a current carrying capacity of 80-110A. For example... Figure 1As shown, this structure is designed to have a high current carrying capacity through the conductive contact 2, and requires less installation space compared to similar products under the same current carrying capacity.

[0025] Working principle: Before use, such as Figures 5 to 8 As shown, the carrier belt 1 and conductive contacts 2 are assembled according to the usage scenario. A suitable riveting method is used to install the corresponding number of conductive contacts 2 onto the carrier belt 1. The carrier belt 1 is then fixed in place using the fixing holes 9 at its location. Figure 12 , Figure 13 , Figure 14 and Figure 15 As shown, complete the installation at a specific location. When using it, as... Figure 1 As shown, conductive contact 2 is responsible for connecting two conductive contact surfaces, and carrier strip 1 is responsible for providing stable and durable elastic force. Carrier strip 1 can make conductive contact 2 fit tightly against the conductive contact surface, further reducing the contact resistance of the flexible contact finger and meeting the requirements of high current. The required number of sections can be freely cut according to the requirements of the usage environment, or the required number of sections for riveting can be designed according to the needs, thereby changing the current carrying capacity. The number of riveted conductive contacts 2 can also be adjusted according to the current requirements and assembly space. They can be riveted continuously, or indirectly riveted in 1, 2, or 3 sections, all of which can meet the current performance requirements. The above is the complete working principle of the present invention.

[0026] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An A9 touch finger, characterized in that: It includes a carrier strip (1) and a conductive contact (2). The surface of the carrier strip (1) is connected to the conductive contact (2) by riveting. The upper side of the conductive contact (2) is provided with an X-side (3), and the outer side of the conductive contact (2) is provided with a Y-side (4).

2. The A9 touch finger according to claim 1, characterized in that: A protrusion (5) is generated on the Y-side (4) of the conductive contact (2), and a connecting hole (6) is provided on the carrier belt (1). The conductive contact (2) is riveted to the connecting hole (6) on the carrier belt (1) through the protrusion (5).

3. The A9 touch finger according to claim 1, characterized in that: The bottom of the conductive contact (2) is connected to a buckle (7), and the outer side of the carrier belt (1) is connected to a tooth (8). The conductive contact (2) is riveted to the tooth (8) at the carrier belt (1) by the buckle (7).

4. An A9 touch finger according to claim 1, characterized in that: The bearing belt (1) is made of steel and has excellent elasticity.

5. An A9 touch finger according to claim 1, characterized in that: The bearing belt (1) can be designed to have teeth (8) on both sides, teeth (8) on one side, or no teeth (8) on both sides.

6. An A9 touch finger according to claim 1, characterized in that: The bearing belt (1) has a fixing hole (9) inside.

7. An A9 touch finger according to claim 1, characterized in that: The conductive contact (2) has good electrical and thermal conductivity, and a single section has a current carrying capacity of 80-110A.

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