A contact member for increasing the area of conduction and a clamp with the contact member

Abstract

The application relates to a contact piece for increasing the conductive area and a clamp with the contact piece, which comprises a metal sleeve body, the metal sleeve body is a hollow member in an extending shape, the metal sleeve body comprises a sleeve body part, a hollow sleeve body formed by a plurality of continuously bent wall surfaces, at least one of the wall surfaces is a plane, the wall surface in the plane is a reference wall surface, and a conductive expansion part shaped at one end of the sleeve body part, the conductive expansion part is a sheet body, the conductive expansion part is located at a position and extends along the extension direction of the plane where the reference wall surface is located; the metal sleeve is detachably matched at the force arm part of each clamp jaw for clamping an object, the designed contact piece structure is simple, a torsional spring is ingeniously used as a connecting wire, the cost is reduced, the conductive contact area of the electroplated piece is increased, and the energy consumption is reduced.

Description

Technical Field

[0001] This application pertains to the field of electroplating accessories, specifically relating to a contact element that increases the conductive area and a clamp with the contact element. Background Technology

[0002] In electroplating, the workpiece to be plated acts as the cathode and needs to form a stable, low-impedance electrical connection with the negative terminal of the power supply (usually via a low-resistance busbar or conductive beam). This connection is crucial for ensuring efficient and uniform current transmission to the workpiece surface, directly affecting the deposition rate, thickness uniformity, adhesion, and final properties of the plating layer. The workpiece fixture plays a dual core role in this process.

[0003] Currently, the industry widely uses clamps made primarily of rubber materials (hereinafter referred to as "existing rubber clamps") to achieve the above functions. These clamps mainly utilize the excellent insulation and elasticity of rubber: the insulation isolates non-electroplating areas of the workpiece from the clamp body, preventing abnormal deposition or workpiece damage caused by stray currents; it provides the necessary elasticity to maintain contact between the workpiece and the conductive parts on the clamp. Under this premise, pneumatic clamps made of insulating materials are currently used in the market to ensure tight contact between the electroplated part and the conductive busbar. However, in-depth technical practice and analysis have shown that existing rubber clamps have significant inherent defects in terms of electrical conductivity: ① Small effective contact area: Due to the structural design of the rubber clamp, the contact area between the electroplated part and the conductive busbar is very limited, making it difficult to form a large-area, tightly fitted conductive interface.

[0004] ② Excessive contact resistance: According to the basic principles of electrical contact, contact resistance is inversely proportional to the effective contact area. Therefore, a small contact area results in a large contact resistance, which in turn leads to excessive energy consumption.

[0005] Chinese patent application CN 219075721 U discloses a pneumatic gripper comprising a cylinder, a first gripper, a second gripper opposite to the first gripper, a first piston, a second piston, and a return spring. The middle portion of the first gripper is rotatably connected to the cylinder, and the middle portion of the second gripper is also rotatably connected to the cylinder. The cylinder contains an air passage for connecting to a compression cylinder and an air chamber connecting the air passage. The first and second pistons are located in the air chamber. Simultaneously, the first piston abuts against the lower part of the first gripper, and the second piston abuts against the lower part of the second gripper. The upper portions of the first and second grippers are connected by the return spring. This patent application has been applied in the electroplating industry, but its shortcomings are also obvious. The gripping surface uses a gasket design, which, as mentioned above, results in a small effective contact area and excessive contact resistance, thus requiring improvement. Utility Model Content

[0006] To address the problems of small effective contact area and excessive contact resistance mentioned in the background art, this application provides a contact element with increased conductive area and a fixture with the contact element.

[0007] This application provides a contact element for increasing conductive area, comprising a metal sleeve body, wherein the metal sleeve body is an extended hollow component, and the metal sleeve body includes, The sleeve portion is a hollow sleeve formed by multiple continuously bent wall surfaces, at least one of which is a plane, and the plane wall surface is a reference wall surface; and A conductive extension portion is formed at one end of the sleeve portion. The conductive extension portion is a sheet-like body. The conductive extension portion extends along the extension direction of the plane where the reference wall surface is located at its position. The conductive extension portion is coplanar with the reference wall surface, and the length of the sleeve portion is greater than the length of the conductive extension portion.

[0008] Furthermore, it also includes The abutting part and the conductive extension part are formed at the same end of the sleeve part, and a pressure-bearing curved surface is formed on the abutting part for being squeezed by the external connector.

[0009] Furthermore, the contour of the contact portion is composed of continuously distributed, arc-shaped surfaces with alternating radii of curvature.

[0010] Furthermore, it also includes A reinforcement portion is formed at at least one long side of the reference wall surface, and the reinforcement portion extends outward along a direction perpendicular to the long side of the reference wall surface and coplanar with the reference wall surface.

[0011] Furthermore, the reference wall surface is sheet-like, and the remaining wall surface is arc-shaped; or, the reference wall surface is sheet-like, and the remaining wall surface is hollow, with the two long sides of the reference wall surface connected by a hollow structure.

[0012] A clamp with a contact element is provided, the clamp having at least two jaws and further including a metal sleeve, the metal sleeve being detachably fitted at the lever arm portion of each jaw for gripping an object, the metal sleeve comprising: The sleeve portion is a hollow sleeve formed by multiple continuously bent wall surfaces, at least one of which is a plane, and the plane wall surface is a reference wall surface; and A conductive extension portion is formed at one end of the sleeve portion. The conductive extension portion is a sheet-like body. The conductive extension portion extends along the extension direction of the plane where the reference wall surface is located at its position. The gripper is inserted into the sleeve body, and the reference wall surface and the conductive extension part are both fitted on the inner side of the gripper to match the gripper contour. The conductive extension part is coplanar with the reference wall surface, and the length of the sleeve body is greater than the length of the conductive extension part.

[0013] Furthermore, it also includes The abutting part and the conductive extension part are formed at the same end of the sleeve part, and a pressure-bearing curved surface is formed on the abutting part for being squeezed by the external connector.

[0014] Furthermore, it also includes a torsion spring, which is mounted on the mounting shaft of the gripper, with its two ends respectively abutting against the arc-shaped bearing surfaces of the metal sleeves mounted on the two grippers.

[0015] Furthermore, it also includes A reinforcement portion is formed at at least one long side of the reference wall surface, and the reinforcement portion extends outward along a direction perpendicular to the long side of the reference wall surface and coplanar with the reference wall surface.

[0016] Furthermore, the reference wall surface is sheet-like, and the remaining wall surfaces are curved surfaces, or... The reference wall is sheet-like, and the remaining wall is a hollow surface. The two long sides of the reference wall are connected by a hollow structure.

[0017] This application includes at least one of the following beneficial technical effects: The designed sleeve body has a pre-reserved flat wall surface, which can tightly clamp the electroplated part and the conductive rod. After the metal sleeve body is used with the clamp, the two metal sleeve bodies on the clamp are connected by a torsion spring or by a separate wire, thus forming a circuit. In addition to the contact surface between the electroplated part and the conductive rod, the back of the conductive rod and the back of the electroplated part can also conduct electricity because they are connected to the two metal sleeve bodies, thereby increasing the conductive area and reducing energy consumption.

[0018] This contact component features a simplified structural design with simple shapes for both the sleeve and conductive extension structures. It can be manufactured solely through stamping, resulting in extremely low production costs and facilitating large-scale application. When used in electroplating operations, the energy savings can even cover the production cost of the contact component. This design achieves significant energy-saving and efficiency-enhancing effects, holding great importance in both energy consumption reduction and improving enterprise production efficiency.

[0019] 3. The designed contact structure is simplified and cleverly uses a torsion spring as a connecting wire, which reduces costs. For mechanisms without a torsion spring, the two metal sleeves can be combined by adding a cable, resulting in a relatively simplified structure and more sophisticated technical functions. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of one type of contact component structure.

[0021] Figure 2 This is a schematic diagram of a fixture with contact elements.

[0022] Figure 3 This is another schematic diagram of the contact element from a different perspective.

[0023] Figure 4 This is a structural diagram when the remaining wall surface outside the reference wall surface of the contact component is an arc-shaped surface.

[0024] Figure 5 This is a structural diagram when the remaining wall surface outside the reference wall surface of the contact component is a hollow surface.

[0025] Explanation of reference numerals in the attached drawings: 1. Reference wall surface; 2. Conductive extension part; 3. Reinforcing part; 4. Abutting part; 6. Sleeve body part; 7. Arc-shaped surface; 8. Hollow structure; 9. Metal sleeve body a. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0027] Example 1

[0028] A contact element for increasing conductive area includes a metal sleeve body a, which is an extended hollow component. The metal sleeve body a includes a sleeve portion 6, a hollow sleeve formed by multiple continuously bent walls, at least one of which is a plane, and the plane wall is a reference wall surface 1; and a conductive extension portion 2, formed at one end of the sleeve portion 6, the conductive extension portion 2 being a sheet-like body, the conductive extension portion 2 extending along the extension direction of the plane containing the reference wall surface 1 at its location; wherein the conductive extension portion 2 is coplanar with the reference wall surface 1, and the length of the sleeve portion 6 is greater than the length of the conductive extension portion 2.

[0029] To ensure a complete circuit connection, a contact portion 4 is also included. The contact portion 4 and the conductive extension portion 2 are formed at the same end of the sleeve portion 6. The connection point between the contact portion 4 and the sleeve portion 6 has only a slight bend to facilitate insertion, ensuring that the shape of the contact portion 4 can be used with the clamp. However, generally only a slight bend is required. A pressure-bearing curved surface is formed on the contact portion 4 for being pressed by external connectors. The contour of the contact portion 4 is composed of continuously distributed, alternating arc-shaped curved surfaces with varying radii of curvature. The end of the contact portion 4 is shaped to accommodate a wire or torsion spring.

[0030] To increase the contact area, a reinforcing part 3 is also provided. The reinforcing part 3 is formed at at least one long side of the reference surface and extends outward along the long side perpendicular to the reference surface and coplanar with the reference surface.

[0031] The sleeve portion 6 is a hollow tube, with each wall surface being sheet-like. The sleeve portion 6 is as follows: Figure 1 and Figure 2 Square tube body shown.

[0032] Example 2

[0033] This application requests disclosure of a contact element that increases conductive area, referring to... Figure 5 It includes the content of Embodiment 1, but differs from Embodiment 1 in that: The sleeve portion 6 is a hollow tube, the reference wall surface 1 is sheet-like, and the remaining wall surface is an arc-shaped surface 7, forming a semi-circular arc-shaped tube. Example 3

[0034] This application requests disclosure of a contact element that increases conductive area, referring to... Figure 4 It includes the content of Embodiment 1, but differs from Embodiment 1 in that: The sleeve part 6 is a hollow sleeve, the reference wall surface 1 is a sheet shape, and the remaining wall surface is a hollow surface. The two long sides of the reference wall surface 1 are connected by the hollow structure 8. This design is to further save costs and reduce weight.

[0035] Example 4

[0036] This application requests disclosure of a contact element that increases the conductive area, referring to... Figure 2 It includes the content of Embodiment 1, but differs from Embodiment 1 in that: A clamp with a contact element is provided. The clamp b has at least two jaws and also includes a metal sleeve. The metal sleeve is detachably fitted at the lever arm b1 of each jaw for clamping an object. The metal sleeve includes: a sleeve body 6, which is a hollow sleeve body formed by a plurality of continuously bent walls, at least one of the walls being a plane, and the plane wall being a reference wall 1; and a conductive extension 2, formed at one end of the sleeve body 6. The conductive extension 2 is a sheet-like body and extends along the extension direction of the plane containing the reference wall 1 at its location. The gripper is inserted into the sleeve portion 6. The reference wall surface 1 and the conductive extension portion 2 are both fitted to the inner side of the gripper to match the gripper contour. The conductive extension portion 2 is coplanar with the reference wall surface 1. The length of the sleeve portion 6 is greater than the length of the conductive extension portion 2.

[0037] To facilitate cooperation with the torsion spring, an abutment portion 4 is also included. The abutment portion 4 and the conductive extension portion 2 are formed at the same end of the sleeve portion 6. A pressure-bearing curved surface for being squeezed by an external connector is formed on the abutment portion 4.

[0038] The circuit is formed by a torsion spring, which is mounted on the mounting shaft of the gripper. The two ends of the torsion spring are respectively in contact with the arc-shaped bearing surfaces of the metal sleeves mounted on the two grippers.

[0039] To increase the contact area, a reinforcing part 3 is formed at at least one long side of the reference surface. The reinforcing part 3 extends outward along a direction perpendicular to the long side of the reference wall surface 1 and is coplanar with the reference wall surface 1.

[0040] The sleeve part 6 is a hollow tube, and each wall surface is sheet-like. Alternatively, the sleeve part 6 is a hollow tube, and the reference wall surface 1 is sheet-like, while the remaining wall surfaces are arc-shaped. Alternatively, the sleeve part 6 is a hollow tube, and the reference wall surface 1 is sheet-like, while the remaining wall surfaces are hollow. The two long sides of the reference wall surface 1 are connected by a hollow structure.

Claims

1. A contact element for increasing conductive area, characterized in that: Includes a metal sleeve body (a), wherein the metal sleeve body (a) is an extended hollow component, and the metal sleeve body (a) includes, The sleeve portion (6) is a hollow sleeve formed by multiple continuously bent wall surfaces, at least one of which is a plane, and the plane wall surface is a reference wall surface (1); and The conductive extension (2) is formed at one end of the sleeve part (6). The conductive extension (2) is a sheet-like body. The conductive extension (2) extends along the extension direction of the plane where the reference wall surface (1) is located. The conductive extension portion (2) is coplanar with the reference wall surface (1), and the length of the sleeve portion (6) is greater than the length of the conductive extension portion (2).

2. The contact element for increasing conductive area according to claim 1, characterized in that, Also includes The abutting part (4) and the conductive extension part (2) are formed at the same end of the sleeve part (6), and a pressure-bearing curved surface for being squeezed by the external connector is formed on the abutting part (4).

3. A contact element for increasing conductive area according to claim 2, characterized in that, The outline of the contact part (4) is composed of a continuous arc-shaped surface with a continuously distributed curvature radius that changes alternately.

4. A contact element for increasing conductive area according to claim 1, characterized in that, Also includes The reinforcement (3) is formed on at least one long side of the reference wall (1) and extends outward along a direction perpendicular to the long side of the reference wall (1) and coplanar with the reference wall (1).

5. A contact element for increasing conductive area according to claim 1, characterized in that, The reference wall (1) is sheet-like, and the remaining wall is an arc-shaped surface (7). Alternatively, the reference wall (1) is sheet-like, and the remaining wall is a hollow surface, with the two long sides of the reference wall (1) connected by a hollow structure (8).

6. A clamp with a contact element, said clamp having at least two grippers, characterized in that: It also includes a metal sleeve, which is detachably fitted at the lever arm of each gripper for holding an object, said metal sleeve comprising: The sleeve portion (6) is a hollow sleeve formed by multiple continuously bent wall surfaces, at least one of which is a plane, and the plane wall surface is a reference wall surface (1); and The conductive extension (2) is formed at one end of the sleeve part (6). The conductive extension (2) is a sheet-like body. The conductive extension (2) extends along the extension direction of the plane where the reference wall surface (1) is located. Wherein, the gripper is inserted into the sleeve part (6), the reference wall surface (1) and the conductive extension part (2) are both fitted on the inner side of the gripper to match the gripper contour, the conductive extension part (2) is coplanar with the reference wall surface (1), and the length of the sleeve part (6) is greater than the length of the conductive extension part (2).

7. A clamp with a contact element according to claim 6, characterized in that, Also includes The abutting part (4) and the conductive extension part (2) are formed at the same end of the sleeve part (6), and a pressure-bearing curved surface for being squeezed by the external connector is formed on the abutting part (4).

8. A clamp with a contact element according to claim 7, characterized in that, It also includes a torsion spring, which is mounted on the mounting shaft of the gripper, with its two ends respectively abutting against the arc-shaped bearing surfaces of the metal sleeves mounted on the two grippers.

9. A clamp with a contact element according to claim 6, characterized in that, Also includes The reinforcement (3) is formed on at least one long side of the reference wall (1) and extends outward along a direction perpendicular to the long side of the reference wall (1) and coplanar with the reference wall (1).

10. A clamp with a contact element according to claim 6, characterized in that, The reference wall (1) is sheet-like, and the remaining wall is an arc-shaped surface (7), or the reference wall (1) is sheet-like, and the remaining wall is a hollow surface, with the two long sides of the reference wall (1) connected by a hollow structure (8).

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