Terminal for crimping aluminum conductor

Abstract

The utility model belongs to the technical field of automobile spare part manufacturing, and particularly belongs to a terminal for aluminum conductor crimping, which comprises an inserting part, a limiting part and a clamping part, the limiting part is positioned between the inserting part and the clamping part, and the clamping part comprises a first clamping part and a second clamping part; the first clamping part and the second clamping part are used for crimping an aluminum conductor; the inner side of the second clamping part is provided with a plurality of concave ribs, the plurality of concave ribs are arranged on the second clamping part, the contact area with an aluminum wire is increased during crimping, so that the crimping holding force of the aluminum wire and the terminal is increased, and in the crimping process, the edges of the concave ribs extrude and damage an oxide layer on the surface of the aluminum wire, so that the aluminum wire is contacted to form effective connection, and the crimping resistance is reduced; the aluminum wire is crimped through the first clamping part and the second clamping part, so that the stability of the terminal is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile parts manufacturing, in particular to a terminal used for crimping aluminum wires. Background Art

[0002] With the popularity of electric vehicles, their driving range has attracted more and more attention from users. The lightweight design of automobiles can effectively improve energy utilization and performance requirements. Aluminum wire is 2 / 3 lighter than copper wire. Even considering the relationship between conductivity and density, aluminum wire with the same resistance is still about 50% lighter than the same copper wire. Therefore, the application of aluminum wire in automotive wiring harnesses can effectively reduce the weight of the vehicle and improve energy utilization. However, the mechanical strength of aluminum wire is only 1 / 3 of that of copper wire, which will affect the terminal crimping strength. In addition, an oxide film is easily formed on the surface of aluminum wire. The oxide layer is insulating. If the oxide layer cannot be destroyed, crimping will increase the crimping resistance and affect the current carrying capacity. Utility Model Content

[0003] In order to solve the problems mentioned in the above background technology, a plurality of concave ribs are provided on the second clamping part, which increases the contact area with the aluminum wire during crimping, thereby increasing the crimping holding force between the aluminum wire and the terminal, and during the crimping process, the edges of the concave ribs squeeze and destroy the oxide layer on the surface of the aluminum wire, so that it contacts to form an effective connection, thereby reducing the crimping resistance; the aluminum wire is crimped by the first clamping part and the second clamping part, thereby improving the stability of the terminal.

[0004] The technical solution of the utility model: a terminal for crimping aluminum wires, comprising an inserting portion, a limiting portion and a clamping portion, wherein the limiting portion is located between the inserting portion and the clamping portion, and the clamping portion comprises a first clamping portion and a second clamping portion; the first clamping portion and the second clamping portion are used for crimping the aluminum wires; a plurality of concave ribs are arranged on the inner side of the second clamping portion.

[0005] Preferably, a groove is provided on the top surface of the limiting portion, and extension surfaces are provided on both sides of the groove. The extension surfaces are relatively bent in a symmetrical state and are lower than the top surface of the limiting portion; and an accommodating cavity is formed on the two side surfaces, the top surface and the bottom surface of the limiting portion.

[0006] Preferably, the plug-in portion is square, and a guide surface is provided at the end thereof.

[0007] Preferably, the first clamping portion and the second clamping portion are both U-shaped, and one side of the second clamping portion extends to connect with the limiting portion.

[0008] Preferably, the first clamping portion and the second clamping portion are both provided with inclined surfaces at their outer edges.

[0009] Preferably, a conducting groove is provided on one side of the plug-in portion close to the limiting portion.

[0010] Preferably, the plug-in portion, the limiting portion and the clamping portion are an integrated structure.

[0011] Compared with the prior art, the utility model provides a terminal for crimping aluminum wires, which has the following beneficial effects: a plurality of concave ribs are provided on the second clamping portion, which increases the contact area with the aluminum wire during crimping, thereby increasing the crimping holding force between the aluminum wire and the terminal, and during the crimping process, the edges of the concave ribs squeeze and destroy the oxide layer on the surface of the aluminum wire, so that it contacts to form an effective connection, thereby reducing the crimping resistance; the aluminum wire is crimped by the first clamping portion and the second clamping portion, thereby improving the stability of the terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0013] Figure 1 It is a stereoscopic view of the main viewing direction of the embodiment of the utility model.

[0014] Figure 2 It is a three-dimensional diagram of the embodiment of the utility model from the rear view direction.

[0015] Reference numerals

[0016] 1-plug-in part; 11-guide surface; 12-conducting groove; 2-limiting part; 21-groove; 22-extension surface; 23-accommodating cavity; 3-clamping part; 31-first clamping part; 32-second clamping part; 321-concave rib; 33-inclined surface; DETAILED DESCRIPTION

[0017] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0018] The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0019] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0020] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0021] It should be noted that the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0022] like Figure 1 to Figure 2 As shown, a terminal for crimping an aluminum wire comprises an inserting portion 1, a limiting portion 2 and a clamping portion 3, wherein the limiting portion 2 is located between the inserting portion 1 and the clamping portion 3, and the clamping portion 3 comprises a first clamping portion 31 and a second clamping portion 32; the first clamping portion 31 and the second clamping portion 32 are used for crimping the aluminum wire; a plurality of concave ribs 321 are provided on the inner side of the second clamping portion 32; a plurality of concave ribs 321 are provided on the second clamping portion 32, and the contact area with the aluminum wire is increased during crimping, thereby increasing the crimping holding force between the aluminum wire and the terminal, and during the crimping process, the edge of the concave rib 321 squeezes and destroys the oxide layer on the surface of the aluminum wire, so that it contacts to form an effective connection, thereby reducing the crimping resistance; the aluminum wire is crimped by the first clamping portion 31 and the second clamping portion 32, thereby improving the stability of the terminal.

[0023] A groove 21 is provided on the top surface of the limiting portion 2, and extension surfaces 22 are provided on both sides of the groove 21. The extension surfaces 22 are relatively bent in a symmetrical state and are lower than the top surface of the limiting portion 2 for clamping the accessories; a receiving cavity 23 is formed on the two side surfaces, the top surface and the bottom surface of the limiting portion 2; the plug-in portion 1 is square, and a guide surface 11 is provided at its end; the first clamping portion 31 and the second clamping portion 32 are both U-shaped. In the subsequent wiring harness processing process, the first clamping portion and the second clamping portion are placed with the wire and then stamped into a "B"-shaped cross-section to form a combined terminal; one side of the second clamping portion 32 extends to connect the limiting portion 2; the first clamping portion 31 and the second clamping portion 32 are provided with an inclined surface 33 at the outer edges; the plug-in portion 1 is provided with a conducting groove 12 on the side close to the limiting portion 2; the plug-in portion 1, the limiting portion 2 and the clamping portion 3 are an integrated structure.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A terminal for crimping an aluminum wire, comprising an inserting portion, a limiting portion and a clamping portion, wherein the limiting portion is located between the inserting portion and the clamping portion, and is characterized in that: The clamping part includes a first clamping part and a second clamping part; the first clamping part and the second clamping part are used for crimping the aluminum wire; and a plurality of concave ribs are arranged inside the second clamping part.

2. The terminal for crimping aluminum wires according to claim 1, characterized in that: A groove is provided on the top surface of the limiting part, and extension surfaces are provided on both sides of the groove. The extension surfaces are relatively bent in a symmetrical state and are lower than the top surface of the limiting part, and are used to clamp the accessories; the two side surfaces, top surface and bottom surface of the limiting part form an accommodating cavity.

3. The terminal for crimping aluminum wires according to claim 1, characterized in that: The plug-in portion is square, and a guide surface is arranged at the end thereof.

4. The terminal for crimping aluminum wires according to claim 1, characterized in that: The first clamping portion and the second clamping portion are both U-shaped, and one side of the second clamping portion extends to connect with the limiting portion.

5. The terminal for crimping aluminum wire according to claim 1, characterized in that: The first clamping portion and the second clamping portion are both provided with inclined surfaces at their outer edges.

6. The terminal for crimping aluminum wires according to claim 1, characterized in that: A conducting groove is provided on one side of the plug-in portion close to the limiting portion.

7. The terminal for crimping aluminum wires according to claim 1, characterized in that: The plug-in portion, the limiting portion and the clamping portion are in an integrated structure.

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