Stamped pin terminal structure and electrical connector

Abstract

The present application belongs to the technical field of connectors. Disclosed is a stamped pin terminal structure and an electrical connector. The stamped pin terminal structure comprises a stamped pin body and a rivet nut, wherein the stamped pin body comprises a rolled cylindrical portion, a connecting portion and a flat tail portion, which are connected in sequence, the flat tail portion comprising a first surface and a second surface parallel to each other, and the flat tail portion having a circular hole structure running through the first surface and the second surface; and the rivet nut is mounted in the circular hole structure, one end of the rivet nut protrudes from the first surface, and the rivet nut is made of carbon steel or stainless steel. The electrical connector provided by the present utility model comprises the above stamped pin terminal structure. In the stamped pin terminal structure, the stamped pin body is integrally formed by means of a stamping process, which effectively reduces the manufacturing cost and improves the current-flowing capacity compared with the existing machining process; and the rivet nut is mounted in the circular hole structure and is made of carbon steel or stainless steel, which ensures sufficient connection strength and improves the torque.

Description

Stamping pin terminal structure and electrical connector Technical Field

[0001] The present application relates to the technical field of connectors, and in particular to a stamped pin terminal structure and an electrical connector. Background Art

[0002] Electrical connectors are circuit components used to connect circuits. They are primarily used in military systems such as aviation, aerospace, and defense. They are used extensively in various military aircraft and weaponry. With the rapid development of the connector industry, customer demands for connector current-carrying capacity are increasing, and the connectors used are constantly being upgraded. Safe, reliable, compact, lightweight, and low-cost connectors facilitate automated assembly and have become a key industry requirement.

[0003] Pin terminals, the core current-carrying components of connectors, are typically machined in known designs. For safety reasons, contact caps are often installed at the front of the pin terminals to prevent accidental contact. To accommodate these caps, specialized structural features are incorporated into the front of the pins, resulting in a complex design.

[0004] In related technologies, the contact pins are typically made of pure copper. To facilitate installation, the terminals are provided with threaded holes. However, due to the softness of pure copper, high torque usage can damage the threads, potentially preventing installation. Furthermore, the contact pins are machined, preventing continuous production from being achieved, resulting in high processing and labor costs. Summary of the Invention

[0005] The purpose of this application is to provide a stamped pin terminal structure and an electrical connector, aiming to solve the problems of high processing costs of existing pin terminals and the inability to connect pin terminals with other components, effectively reduce processing costs, increase the connection torque between pin terminals and other components, and improve connection reliability.

[0006] To achieve this goal, this application adopts the following technical solutions:

[0007] A stamped pin terminal structure, comprising:

[0008] The stamped pin body comprises a rolled portion, a connecting portion and a flat tail portion connected in sequence, wherein the flat tail portion comprises a first surface and a second surface parallel to each other, and the flat tail portion is provided with a circular hole structure penetrating the first surface and the second surface;

[0009] A self-clinching nut is installed in the circular hole structure, and one end of the self-clinching nut protrudes from the first surface. The self-clinching nut is made of carbon steel or stainless steel.

[0010] Optionally, the flat tail portion includes a first tail plate and a second tail plate that fit together, the first tail plate is provided with a stamped positioning protrusion, and the second tail plate is provided with a fixing hole that cooperates with the stamped positioning protrusion.

[0011] Optionally, there are multiple stamped positioning protrusions, and the multiple stamped positioning protrusions are distributed on the circumference of the circular hole structure.

[0012] Optionally, the flat tail portion is configured as a bent structure formed by folding one end of the connecting portion away from the curled portion.

[0013] Optionally, the flat tail portion is configured as a crimping structure formed by flattening one end of the connecting portion away from the curled portion.

[0014] Optionally, there are four stamped positioning protrusions, and every two of the stamped positioning protrusions constitute a positioning protrusion group, and the two positioning protrusion groups are symmetrically arranged on both sides of the circular hole structure.

[0015] Optionally, the connecting portion is in an arc cone shape, the small end of the connecting portion is connected to the curled portion, and the large end of the connecting portion is connected to the flat tail portion.

[0016] Optionally, the connecting portion is in the shape of a tapered flat tube, the small end of the connecting portion is connected to the curled portion, and the large end of the connecting portion is connected to the flat tail portion.

[0017] Optionally, the thickness of the flat tail portion is 2 mm to 5 mm.

[0018] An electrical connector comprises the stamped pin terminal structure as described in any of the above schemes, and the electrical connector further comprises a connecting plate and a screw member, wherein the connecting plate is mounted on the flat tail portion via the screw member.

[0019] Beneficial effects of the present application: The stamped pin terminal structure provided by the present application is characterized in that the stamped pin body is initially formed in one piece through a stamping process, which effectively reduces the production cost and improves the flow capacity compared with the existing machining process; the flat tail is provided with a circular hole structure passing through the first surface and the second surface, and a rivet nut is installed in the circular hole structure. The rivet nut is made of carbon steel or stainless steel, which ensures sufficient connection strength and greatly improves the torque.

[0020] The electrical connector provided in the present application includes the above-mentioned stamped pin terminal structure, a connecting plate and a threaded member. The connecting plate is installed on the flat tail through the threaded member. Specifically, one end of the threaded member is passed through the connecting plate, and the other end is screwed onto the rivet nut to achieve the connection between the connecting plate and the stamped pin terminal structure, effectively improving the torque. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG1 is a schematic diagram of a stamped pin body from one viewing angle provided by an embodiment of the present application (the flat tail portion is a bent structure formed by folding);

[0022] FIG2 is a schematic diagram of a stamped pin body from another perspective provided by an embodiment of the present application (the flat tail portion is a bent structure formed by folding);

[0023] FIG3 is a schematic structural diagram of a stamped pin body (a flat tail portion having a bent structure formed by folding) and a rivet nut after assembly, provided in an embodiment of the present application;

[0024] FIG4 is a schematic diagram of a stamped pin body from one viewing angle provided by an embodiment of the present application (the flat tail portion is a crimping structure formed by flattening);

[0025] FIG5 is a schematic diagram of a stamped pin body from another perspective provided by an embodiment of the present application (the flat tail portion is a crimping structure formed by flattening);

[0026] FIG6 is a schematic structural diagram of the assembled stamped pin body (the flat tail is a crimping structure formed by flattening) and the rivet nut provided in an embodiment of the present application.

[0027] In the figure: 100, stamped pin body; 110, rolled portion; 120, connecting portion; 130, flat tail portion; 131, first tail plate; 1311, first surface; 132, second tail plate; 1321, second surface; 1322, fixing hole; 133, round hole structure; 200, rivet nut. DETAILED DESCRIPTION

[0028] The present application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present application and are not intended to limit the present application. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions of the present application, not all of the structures.

[0029] In the description of this application, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and can refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0030] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0031] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meanings.

[0032] Connectors serve as a bridge, providing electrical connections and signal transmission between devices, components, and systems, and are essential components for a complete system. Pin terminals, the core current-carrying components of connectors, are typically machined, resulting in high processing costs. Furthermore, to facilitate connection with other components, the terminals are provided with threaded holes. However, these terminals are typically made of pure copper, which is relatively soft. When applied with high torque, the threads may be damaged, making installation impossible.

[0033] This embodiment provides a stamped pin terminal structure, as shown in Figures 1 to 6. The stamped pin terminal structure includes a stamped pin body 100 and a rivet nut 200. The stamped pin body 100 includes a rolled portion 110, a connecting portion 120, and a flat tail portion 130 connected in sequence. The flat tail portion 130 includes a first surface 1311 and a second surface 1321 parallel to each other. The flat tail portion 130 is provided with a circular hole structure 133 that passes through the first surface 1311 and the second surface 1321. The rivet nut 200 is installed in the circular hole structure 133, and one end of the rivet nut 200 protrudes from the first surface 1311. The material of the rivet nut 200 is carbon steel or stainless steel.

[0034] The stamped pin terminal structure provided in this embodiment has a stamped pin body 100 integrally formed by a stamping process, which effectively reduces the manufacturing cost and improves the flow capacity compared with the existing machining process; the flat tail 130 is provided with a circular hole structure 133 that passes through the first surface 1311 and the second surface 1321, and a rivet nut 200 is installed in the circular hole structure 133. The material of the rivet nut 200 is carbon steel or stainless steel, which ensures sufficient connection strength and greatly improves the torque.

[0035] Optionally, the flat tail portion 130 includes a first tail plate 131 and a second tail plate 132 that fit together. The first tail plate 131 is provided with a stamped positioning protrusion, and the second tail plate 132 is provided with a fixing hole 1322 that cooperates with the stamped positioning protrusion. The stamped positioning protrusion and the fixing hole 1322 cooperate to achieve fixation between the first tail plate 131 and the second tail plate 132, prevent the two from offsetting each other, and improve the fitting stability.

[0036] Specifically, multiple stamped positioning protrusions are provided, distributed around the circumference of the circular hole structure 133, to enhance the securement between the first tail plate 131 and the second tail plate 132. In this embodiment, four stamped positioning protrusions are provided, with each pair of these forming a positioning protrusion group. The two positioning protrusion groups are symmetrically positioned on either side of the circular hole structure 133 to ensure a stable connection. In other embodiments, other numbers of stamped positioning protrusions may be provided, such as six, with three forming a positioning protrusion group. This can be adjusted as needed.

[0037] In one possible embodiment, referring again to Figures 1-3, the flat tail portion 130 can be configured as a bent structure formed by folding over one end of the connecting portion 120 away from the curled portion 110, thereby ensuring sufficient flow area. Furthermore, after folding, the first tail plate 131 and the second tail plate 132 are superimposed to increase the thickness of the flat tail portion 130, thereby ensuring the connection strength of the self-clinching nut 200. Furthermore, the connecting portion 120 is in an arc-conical shape, with the small end of the connecting portion 120 connected to the curled portion 110 and the large end of the connecting portion 120 connected to the flat tail portion 130, thereby ensuring a smooth transition connection between the curled portion 110 and the flat tail portion 130 during the stamping process.

[0038] In another possible embodiment, referring to Figures 4 to 6, the flat tail portion 130 is configured as a crimped structure formed by flattening the end of the connecting portion 120 away from the rolled portion 110. The stamped pin body 100 is rolled as a whole to form the connecting portion 120, and then the end of the connecting portion 120 away from the rolled portion 110 is flattened to form the flat tail portion 130 with a crimped structure. The rolled portion 110 and the flat tail portion 130 have a large connection area, thereby improving the flow capacity. Furthermore, the connecting portion 120 is in the shape of a conical flat tube, with the small end of the connecting portion 120 connected to the rolled portion 110 and the large end of the connecting portion 120 connected to the flat tail portion 130, so that the rolled portion 110 and the flat tail portion 130 are smoothly transitioned and connected.

[0039] Optionally, the thickness of the flat tail portion 130 is 2 mm to 5 mm, and this range can better ensure the connection strength of the rivet nut 200 .

[0040] This embodiment further provides an electrical connector, including the above-mentioned stamped pin terminal structure. The electrical connector further includes a connecting plate and a screw member, and the connecting plate is mounted on the flat tail portion 130 via the screw member.

[0041] In this electrical connector, the connecting plate is mounted on the flat tail 130 via a screw member. During assembly, one end of the screw member is passed through the connecting plate, and the other end is screwed onto the rivet nut 200, thereby achieving connection between the connecting plate and the stamped pin terminal structure, effectively increasing the torque.

[0042] Obviously, the above embodiments of the present application are merely examples for the purpose of clearly illustrating the present application, and are not intended to limit the embodiments of the present application. A person skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present application. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present application shall be included within the scope of protection of the claims of the present application.

Claims

1. A stamping pin terminal structure, characterized in that: include: A stamped pin body (100) comprises a rolled portion (110), a connecting portion (120) and a flat tail portion (130) connected in sequence, the flat tail portion (130) comprising a first surface (1311) and a second surface (1321) parallel to each other, and the flat tail portion (130) is provided with a circular hole structure (133) penetrating the first surface (1311) and the second surface (1321); The self-clinching nut (200) is installed in the circular hole structure (133), and one end of the self-clinching nut (200) protrudes from the first surface (1311). The material of the self-clinching nut (200) is carbon steel or stainless steel.

2. The stamping pin terminal structure according to claim 1, characterized in that: The flat tail portion (130) comprises a first tail plate (131) and a second tail plate (132) which fit together, the first tail plate (131) being provided with a stamped positioning protrusion, and the second tail plate (132) being provided with a fixing hole (1322) which cooperates with the stamped positioning protrusion.

3. The stamping pin terminal structure according to claim 2, characterized in that: A plurality of the punching positioning protrusions are provided, and the plurality of the punching positioning protrusions are distributed around the circumference of the circular hole structure (133).

4. The stamping pin terminal structure according to claim 3, characterized in that: There are four stamped positioning protrusions, and every two of the stamped positioning protrusions form a positioning protrusion group. The two positioning protrusion groups are symmetrically arranged on both sides of the circular hole structure (133).

5. The stamping pin terminal structure according to claim 2, characterized in that: The flat tail portion (130) is configured as a bent structure formed by folding one end of the connecting portion (120) away from the curled portion (110).

6. The stamping pin terminal structure according to claim 5, characterized in that: The connecting portion (120) is in the shape of an arc cone, the small end of the connecting portion (120) is connected to the curled portion (110), and the large end of the connecting portion (120) is connected to the flat tail portion (130).

7. The stamping pin terminal structure according to claim 2, characterized in that: The flat tail portion (130) is configured as a crimping structure formed by flattening one end of the connecting portion (120) away from the curled portion (110).

8. The stamping pin terminal structure according to claim 7, characterized in that: The connecting portion (120) is in the shape of a conical flat tube, the small end of the connecting portion (120) is connected to the curled portion (110), and the large end of the connecting portion (120) is connected to the flat tail portion (130).

9. The stamping pin terminal structure according to any one of claims 1 to 8, characterized in that: The thickness of the flat tail portion (130) is 2 mm to 5 mm.

10. An electrical connector, characterized in that: It comprises the stamped pin terminal structure as claimed in any one of claims 1 to 9, the electrical connector further comprising a connecting plate and a screw member, the connecting plate being mounted on the flat tail portion (130) via the screw member.

Images