Composite terminal

Abstract

The composite terminal comprises a terminal body and a fixing sleeve, the terminal body comprises a welding part, a connecting part and a plugging part, the center of the plugging part is provided with a plugging hole, the center of the fixing sleeve is provided with a mounting through hole penetrating through the front end and the rear end of the fixing sleeve, and the plugging part is inserted into the mounting through hole to be welded and fixed to the fixing sleeve. The mounting through hole is communicated with the inserting hole, and the connecting part and the welding part are arranged on the outer side of the fixing sleeve. The composite terminal is simple in structure and rapid to install, a riveting wire part on the terminal body is omitted, a welding structure is adopted, the appearance of the terminal is simplified, the overall size of the terminal is reduced, a welding connection mode is adopted, the problem of mechanical stress relaxation is avoided, the vibration resistance and impact resistance are higher, and the service life of the terminal is prolonged. Stable transmission of electric signals is facilitated, and poor contact is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of electric connectors, in particular to a composite terminal. Background Art

[0002] Electrical connectors are indispensable components in electronic devices. Currently, female terminal products of electrical connectors on the market are mostly made of a single material, and are generally fixedly connected to cables through a rivet structure. For example, the conductive terminal structure disclosed in patent CN110268584B has the following shortcomings: First, because of the need for riveting, the terminal has to be lengthened as a whole in addition to the functional area to leave space for the design of the rivet feet, which leads to an overall increase in the height of the product and a complex structure that increases the manufacturing cost; on the other hand, although it can maintain basic performance in non-core parts of the car with weaker vibration intensity, it is prone to poor contact in key parts under high-frequency and strong vibration environments (such as the engine compartment, chassis transmission system and other high-frequency vibration areas) due to insufficient structural stability, which directly affects the stability of signal transmission. Summary of the Invention

[0003] The purpose of the present invention is to provide a composite terminal to solve the technical problems in the background technology.

[0004] To achieve the aforementioned objectives, the present invention provides the following technical solutions:

[0005] A composite terminal comprises a terminal body and a fixed sleeve, wherein the terminal body comprises a welding portion, a connecting portion and a plug-in portion, wherein a plug-in hole is provided at the center of the plug-in portion, and a mounting through-hole is provided at the center of the fixed sleeve that passes through its front and rear ends, wherein the plug-in portion is inserted into the mounting through-hole and is welded and fixed to the fixed sleeve, wherein the mounting through-hole is connected to the plug-in hole, and the connecting portion and the welding portion are located on the outside of the fixed sleeve.

[0006] The connecting portion and the welding portion are both sheet structures. The welding portion is arranged along the longitudinal direction. The connecting portion is vertically connected to one side of the welding portion for connecting the welding portion with the plug-in portion.

[0007] The plug-in portion includes a plug-in body, and a first positioning hole is provided in the plug-in body, which passes through the front and rear ends thereof. The longitudinal cross-section of the plug-in hole is a rectangular structure. Two elastic pressure arms extend outward from the outside of the plug-in body, namely a first elastic pressure arm and a second elastic pressure arm. The first elastic pressure arm and the second elastic pressure arm have the same structure and are symmetrically arranged along the diagonal of the plug-in hole. One end of the first elastic pressure arm is fixedly connected to the plug-in body, and the other end thereof is suspended at a diagonal position above the second elastic pressure arm. The distance between the first elastic pressure arm and the second elastic pressure arm forms a second positioning hole, and the second positioning hole is connected to the first positioning hole to form a plug-in hole.

[0008] The first elastic pressure arm includes a first connecting arm and a first contact arm. The longitudinal cross-section of the first connecting arm is an inverted L-shaped structure. The first connecting arm is bent toward the second elastic pressure arm. The transverse cross-section of the first contact arm is a trumpet-shaped structure. The size of the internal opening of the first contact arm gradually increases in the direction away from the first connecting arm. A connecting portion of an arc transition structure is provided at the junction of the inner side wall of the first contact arm and the inner side wall of the first connecting arm, which is a first arc portion. The first arc portion protrudes toward the second elastic pressure arm and contacts the pin inserted into the socket.

[0009] The fixing sleeve includes a fixing body with a rectangular structure, the mounting through hole is a rectangular structure and passes through the front and rear ends of the fixing body, a first opening is provided above the fixing body, the first opening is communicated with the mounting through hole, an outward-bent spring is provided in the first opening, one end of the spring is fixed to one side of the first opening, and the other end is suspended above the first opening.

[0010] A baffle extends upward from one side above the fixed body. The baffle is perpendicular to the one side above the fixed body, and the length of the baffle is consistent with the length of the fixed body.

[0011] The fixed body is also provided with a second opening, which is in front of the first opening and communicated with the mounting through hole. The plug-in body is provided with a third opening that matches and communicates with the second opening. The third opening is communicated with the first positioning hole. The left and right sides of the second opening respectively have claws bent toward the direction of the third opening to clamp and install the plug-in part of the terminal body.

[0012] The opening position on the right side of the fixed body is provided with elastic pressing plates along the four sides of the mounting through hole. The four elastic pressing plates extend toward the center of the mounting through hole to form an elastic limiting hole with a rectangular structure. The elastic limiting hole is connected to the first mounting through hole.

[0013] The terminal body and the fixing sleeve are both integrally bent and formed structures.

[0014] Compared with the prior art, the composite terminal of the present application has a simple structure and is quick to install. The rivet wire part is eliminated on the terminal body, and a welding structure is adopted to simplify the terminal appearance, thereby reducing the overall volume of the terminal. The welding connection method has no mechanical stress relaxation problem, and has stronger vibration and impact resistance, which is conducive to the stable transmission of electrical signals and avoids poor contact. In addition, a fixed sleeve is welded on the outside of the terminal body in the present application, and the wrapped structure effectively absorbs external vibration energy, increases the retention and reliability of the terminal during vibration, and ensures the stability of signal transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 : Schematic diagram of the three-dimensional structure of this application;

[0016] Figure 2 : Three-dimensional structure diagram of the terminal body;

[0017] Figure 3 : Right view of the terminal body;

[0018] Figure 4 : Front view of the first elastic pressure arm;

[0019] Figure 5 : Fixed sleeve three-dimensional structure diagram;

[0020] Figure 6 : Three-dimensional structural diagram of the fixed sleeve in another direction;

[0021] Figure 7 : Right view of the fixed sleeve;

[0022] Figure 8 : This application and the main view of the connector installation effect;

[0023] Figure 9 : This application and the internal structure diagram of the connector installation. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0025] Specific embodiment 1: Please refer to Figures 1 to 9 In an embodiment of the present invention, a composite terminal includes a terminal body 1 and a fixing sleeve 5. The terminal body 1 and the fixing sleeve 5 are both one-piece bent and formed structures. The fixing sleeve 5 is made of stainless steel, and the terminal body 1 is made of copper or copper alloy.

[0026] In this application, the terminal body 1 includes a welding part 2, a connecting part 3 and a plug-in part 4. A plug-in hole 404 is provided in the center of the plug-in part 4, and a mounting through hole 603 is provided in the center of the fixing sleeve 5 that passes through its front and rear ends. The plug-in part 4 is inserted into the mounting through hole 603 and is welded and fixed to the fixing sleeve 5. The mounting through hole 603 is connected to the plug-in hole 404, and the connecting part 3 and the welding part 2 are on the outside of the fixing sleeve 5.

[0027] The connecting part 3 and the welding part 2 are both sheet structures. The welding part 2 is a rectangular sheet structure. The welding part 2 is arranged along the longitudinal direction. The connecting part 3 is vertically connected to one side of the center position of the welding part 2 for connecting the welding part 2 with the plug-in part 4.

[0028] The plug-in portion 4 includes a plug-in body 401, which is provided with a first positioning hole running through its front and rear ends. The longitudinal cross-section of the plug-in hole 404 is a rectangular structure. Two elastic pressure arms extend outward from the outside of the plug-in body 401, namely the first elastic pressure arm 402 and the second elastic pressure arm 403. The first elastic pressure arm 402 and the second elastic pressure arm 403 have the same structure and are symmetrically arranged along the diagonal of the plug-in hole 404. One end of the first elastic pressure arm 402 is fixedly connected to the plug-in body 401, and the other end thereof is suspended at a diagonal position above the second elastic pressure arm 403. The distance between the first elastic pressure arm 402 and the second elastic pressure arm 403 forms a second positioning hole, and the second positioning hole is connected to the first positioning hole to form the plug-in hole 404.

[0029] The first elastic pressure arm 402 includes a first connecting arm 402-1 and a first contact arm 402-2. The longitudinal section of the first connecting arm 402-1 is an inverted L-shaped structure. The first connecting arm 402-1 is bent toward the second elastic pressure arm 403. The transverse section of the first contact arm 402-2 is a trumpet-shaped structure. The size of the internal opening of the first contact arm 402-2 gradually increases as it moves away from the first connecting arm 402-1. A connecting portion 3 with an arc transition structure is provided at the junction of the inner side wall of the first contact arm 402-2 and the inner side wall of the first connecting arm 402-1. The first arc portion 402-3 protrudes toward the second elastic pressure arm 403 and contacts the pin inserted into the plug hole 404.

[0030] The fixing sleeve 5 includes a fixing body 6 of a rectangular structure, the mounting through hole 603 is a rectangular structure and passes through the front and rear ends of the fixing body 6, a first opening 601 is provided above the fixing body 6, the first opening 601 is communicated with the mounting through hole 603, and an outward-bent spring piece 8 is provided in the first opening 601, one end of the spring piece 8 is fixed to one side of the first opening 601, and the other end is suspended above the first opening 601. The spring piece 8 can fix the terminal to the insulating body of the connector 11 and prevent it from falling off.

[0031] A baffle 7 extends upward on one side above the fixed body 6. The baffle 7 is a rectangular structure. The baffle 7 is perpendicular to one side above the fixed body 6. The length of the baffle 7 is consistent with the length of the fixed body 6. The square upright baffle 7 is designed to effectively prevent mistakes, facilitate bending, and play a supporting role when welding the composite terminal, making it convenient for spot welding with a spot welding machine.

[0032] A second opening 602 is also provided on the fixed body 6. The second opening 602 is in front of the first opening 601 and communicates with the mounting through hole 603. A third opening 401-1 is provided on the plug-in body 401, which matches the position of the second opening 602 and is communicated with the third opening 401-1. The third opening 401-1 is communicated with the first positioning hole. The left and right sides of the second opening 602 are respectively provided with claws 10 bent toward the third opening 401-1 to clamp and install the plug-in part 4 of the terminal body 1. The claws 10 are bent and stuck on the side wall of the third opening 401-1 to achieve positioning and installation of the fixed body 6 and the plug-in body 401.

[0033] The opening position on the right side of the fixed body 6 is provided with elastic pressing pieces 9 along the four sides of the mounting through hole 603. The four elastic pressing pieces 9 extend toward the center of the mounting through hole 603 to form an elastic limiting hole with a rectangular structure. The elastic limiting hole is connected to the first mounting through hole 603. The elastic deformation of the rectangular claw 10 of the elastic limiting hole can accurately control the contact area with the pin, and can also avoid the loosening of the pin due to rigid collision, which significantly improves the reliability of the connection in high-frequency vibration environments such as automobiles and aviation.

[0034] Compared with the prior art, the composite terminal of the present application has a simple structure and is quick to install. The rivet wire part is eliminated on the terminal body, and a welding structure is adopted to simplify the terminal appearance, thereby reducing the overall volume of the terminal. The welding connection method has no mechanical stress relaxation problem, and has stronger vibration and impact resistance, which is conducive to the stable transmission of electrical signals and avoids poor contact. In addition, a fixed sleeve is welded on the outside of the terminal body in the present application, and the wrapped structure effectively absorbs external vibration energy, increases the retention and reliability of the terminal during vibration, and ensures the stability of signal transmission.

[0035] It will be apparent to those skilled in the art that the present invention is not limited to the details of the foregoing exemplary embodiments and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and it is intended that all variations within the meaning and range of equivalents of the claims be embraced therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0036] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A composite terminal, characterized in that: It includes a terminal body and a fixing sleeve, the terminal body includes a welding part, a connecting part and a plug-in part, the plug-in hole is provided in the center of the plug-in part, the center of the fixing sleeve is provided with a mounting through hole running through its front and rear ends, the plug-in part is inserted into the mounting through hole and welded to the fixing sleeve, the mounting through hole is connected to the plug-in hole, and the connecting part and the welding part are on the outside of the fixing sleeve.

2. The composite terminal according to claim 1, characterized in that: The connecting portion and the welding portion are both sheet structures. The welding portion is arranged along the longitudinal direction. The connecting portion is vertically connected to one side of the welding portion for connecting the welding portion with the plug-in portion.

3. The composite terminal according to claim 2, characterized in that: The plug-in portion includes a plug-in body, and a first positioning hole is provided in the plug-in body, which passes through the front and rear ends thereof. The longitudinal cross-section of the plug-in hole is a rectangular structure. Two elastic pressure arms extend outward from the outside of the plug-in body, namely a first elastic pressure arm and a second elastic pressure arm. The first elastic pressure arm and the second elastic pressure arm have the same structure and are symmetrically arranged along the diagonal of the plug-in hole. One end of the first elastic pressure arm is fixedly connected to the plug-in body, and the other end thereof is suspended at a diagonal position above the second elastic pressure arm. The distance between the first elastic pressure arm and the second elastic pressure arm forms a second positioning hole, and the second positioning hole is connected to the first positioning hole to form a plug-in hole.

4. The composite terminal according to claim 3, characterized in that: The first elastic pressure arm includes a first connecting arm and a first contact arm. The longitudinal cross-section of the first connecting arm is an inverted L-shaped structure. The first connecting arm is bent toward the second elastic pressure arm. The transverse cross-section of the first contact arm is a trumpet-shaped structure. The size of the internal opening of the first contact arm gradually increases in the direction away from the first connecting arm. A connecting portion of an arc transition structure is provided at the junction of the inner side wall of the first contact arm and the inner side wall of the first connecting arm, which is a first arc portion. The first arc portion protrudes toward the second elastic pressure arm and contacts the pin inserted into the socket.

5. A composite terminal according to any one of claims 1 to 4, characterized in that: The fixing sleeve includes a fixing body with a rectangular structure, the mounting through hole is a rectangular structure and passes through the front and rear ends of the fixing body, a first opening is provided above the fixing body, the first opening is communicated with the mounting through hole, an outward-bent spring is provided in the first opening, one end of the spring is fixed to one side of the first opening, and the other end is suspended above the first opening.

6. The composite terminal according to claim 5, characterized in that: A baffle is extended upward from one side above the fixed body. The baffle is perpendicular to the one side above the fixed body, and the length of the baffle is consistent with the length of the fixed body.

7. The composite terminal according to claim 6, characterized in that: The fixed body is also provided with a second opening, which is in front of the first opening and communicated with the mounting through hole. The plug-in body is provided with a third opening that matches and communicates with the second opening. The third opening is communicated with the first positioning hole. The left and right sides of the second opening respectively have claws bent toward the direction of the third opening to clamp and install the plug-in part of the terminal body.

8. The composite terminal according to claim 7, characterized in that: The opening position on the right side of the fixed body is provided with elastic pressing plates along the four sides of the mounting through hole. The four elastic pressing plates extend toward the center of the mounting through hole to form an elastic limiting hole with a rectangular structure. The elastic limiting hole is connected to the first mounting through hole.

9. The composite terminal according to claim 8, characterized in that: The terminal body and the fixing sleeve are both integrally bent and formed structures.

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