Copper-aluminum wire switching box

Abstract

The utility model discloses a copper-aluminum wire switching box which is better in stability, tensile property and sealing property. According to the technical scheme, the connector comprises a shell which is provided with two axially-through insertion cavities, the two ends of each insertion cavity are provided with an aluminum row sealing groove and a copper wire sealing groove respectively, and the inner wall of each insertion cavity is provided with a clamping groove and a positioning flange; the positioning seat is installed in the insertion cavity of the shell and provided with a copper wire installation cavity and an aluminum bar installation cavity, the bottom of the positioning seat is provided with a buckle connected with the clamping groove, at least one hook is arranged in the copper wire installation cavity, and at least one positioning rib is arranged in the aluminum bar installation cavity; the aluminum row sealing ring is arranged in the aluminum row sealing groove of the shell; the copper wire sealing ring is arranged in the copper wire sealing groove of the shell; the aluminum row tail cover covers the aluminum row sealing groove of the shell; the cable tail cover covers the copper wire sealing groove of the shell; the copper-aluminum wire is formed by welding a copper wire and an aluminum bar through ultrasonic waves, the welding end of the copper wire is installed in the copper wire installation cavity of the positioning seat, the welding end of the aluminum bar is installed in the aluminum bar installation cavity of the positioning seat, and the copper-aluminum wire is provided with a positioning groove matched with the positioning rib in a positioning mode.

Description

Technical Field

[0001] The utility model belongs to the field of new energy vehicles, and in particular relates to a copper-aluminum wire adapter box. Background Art

[0002] Copper-aluminum wire is made of two different metals, copper wire and aluminum wire, welded by ultrasonic welding. The conductivity of aluminum-copper wire is lower than that of pure copper wire, but it is relatively lighter and cheaper. Aluminum-copper wire is mainly used in the field of new energy vehicles because it can reduce costs and improve energy efficiency. A transfer box is usually provided at the connection of copper-aluminum wire, which is used to fix and seal the connection. The disadvantages of traditional transfer boxes are: 1. There is no fixed limit inside, its stability and tensile strength are poor, and it is easy to fall off due to the vibration of the car; 2. The sealing performance is poor. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a copper-aluminum wire transfer box with better stability, tensile resistance and sealing performance.

[0004] In order to solve the above problems, the technical solutions adopted by the utility model include:

[0005] The housing is provided with two axially penetrating plug-in cavities, the two ends of the plug-in cavities are respectively provided with an aluminum row sealing groove and a copper wire sealing groove, and the inner wall is provided with a clamping groove and a positioning flange;

[0006] A positioning seat is installed in the plug-in cavity of the shell, which is provided with a copper wire installation cavity and an aluminum bar installation cavity, and a buckle connected to the card slot is provided at the bottom, at least one hook is provided in the copper wire installation cavity, and at least one positioning rib is provided in the aluminum bar installation cavity;

[0007] An aluminum row sealing ring is installed in the aluminum row sealing groove of the housing;

[0008] A copper wire sealing ring installed in the copper wire sealing groove of the housing;

[0009] An aluminum row tail cover, covering the aluminum row sealing groove of the housing;

[0010] A cable tail cover, covering the copper wire sealing groove of the housing;

[0011] The copper-aluminum conductor is formed by ultrasonic welding of a copper wire and an aluminum bar. The welding end of the copper wire is installed in the copper wire installation cavity of the positioning seat, and the welding end of the aluminum bar is installed in the aluminum bar installation cavity of the positioning seat, and is provided with a positioning groove that cooperates with the positioning rib.

[0012] The copper-aluminum conductor adapter box is characterized in that a positioning step is formed between the copper wire installation cavity and the aluminum bar installation cavity, and a positioning notch is provided on the aluminum bar to cooperate with the positioning step.

[0013] The copper-aluminum conductor adapter box is characterized in that the inner wall of the plug-in cavity is provided with supporting ribs supported by the aluminum bar.

[0014] The copper-aluminum wire transfer box is characterized in that the plug-in cavity is high and low, and adjacent ends are overlapped.

[0015] The copper-aluminum conductor transfer box is characterized in that mounting ear plates are provided on both sides of the shell.

[0016] The copper-aluminum conductor transfer box is characterized in that a conductor clamp is provided at the end of the copper wire installation cavity.

[0017] The copper-aluminum conductor transfer box is characterized in that a metal bushing is embedded in the mounting ear plate.

[0018] The copper-aluminum conductor transfer box of the utility model has the following advantages:

[0019] 1. Quick installation, the adapter box is directly fixed on the vehicle body with bolts;

[0020] 2. Simplified design reduces space occupation while ensuring product functional stability;

[0021] 3. Good sealing performance, so that the product can meet the protection level of IP68, IP6K9K in the overall state;

[0022] 4. Equipped with multiple limit structures, it has better stability and tensile resistance, reducing the impact of vibration on the product;

[0023] 5. It adopts lightweight design, with the characteristics of light weight and high reliability.

[0024] The utility model is further described below in conjunction with the accompanying drawings of the specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of the copper-aluminum conductor transfer box of the utility model;

[0026] Figure 2 It is a cross-sectional view of the copper-aluminum conductor transfer box of the utility model;

[0027] Figure 3 It is an exploded view of the copper-aluminum conductor transfer box of the utility model;

[0028] Figure 4 It is a cross-sectional view of the housing of the utility model;

[0029] Figure 5 It is a front structural schematic diagram of the positioning seat of the utility model;

[0030] Figure 6 It is a schematic diagram of the back structure of the positioning seat of the utility model;

[0031] Figure 7 It is a schematic diagram of the connection between the positioning seat and the copper-aluminum conductor of the utility model. DETAILED DESCRIPTION

[0032] Reference Figure 1-Figure 7 As shown, the copper-aluminum conductor adapter box of the utility model comprises: a shell 1, a positioning seat 2, an aluminum bar sealing ring 3, a copper wire sealing ring 4, an aluminum bar tail cover 5, a cable tail cover 6, and a copper-aluminum conductor 7. The shell 1 is provided with two axially through-going plug-in cavities 8, and the two ends of the plug-in cavity 8 are respectively provided with an aluminum bar sealing groove 9 and a copper wire sealing groove 10, and the inner wall of the plug-in cavity 8 is provided with a card slot 11 and a positioning flange 12. The positioning seat 2 is installed in the plug-in cavity 8 of the shell (1), and the front end is against the positioning flange 12. The positioning seat 2 is provided with a copper wire installation cavity 13 and an aluminum bar installation cavity 1, and a buckle 15 connected to the card slot 11 is provided at the bottom of the positioning seat 2, a hook 16 is provided in the copper wire installation cavity 13, and a positioning rib 17 is provided in the aluminum bar installation cavity 14. The aluminum bar sealing ring 3 is installed in the aluminum bar sealing groove 9 of the shell 1. The copper wire sealing ring 4 is installed in the copper wire sealing groove 10 of the shell 1. The aluminum bar tail cover 5 covers the aluminum bar sealing groove 9 of the housing 1 and is connected by a hook. The cable tail cover 6 covers the copper wire sealing groove 10 of the housing 1 and is also connected by a hook. The copper-aluminum conductor 7 is made of a copper wire 18 and an aluminum bar 19 by ultrasonic welding. The welding end of the copper wire 18 is installed in the copper wire installation cavity 13 of the positioning seat 2, and the welding end of the aluminum bar 19 is installed in the aluminum bar installation cavity 14 of the positioning seat 2. The aluminum bar 19 is provided with a positioning groove 20 that cooperates with the positioning rib 17. After assembly, the hook 16 is also hung on the surface of the aluminum bar 19.

[0033] Preferably, a positioning step 21 is formed between the copper wire installation cavity 13 and the aluminum bar installation cavity 14, and a positioning notch 22 is provided on the aluminum bar 19 to cooperate with the positioning step 21, so as to further improve the stability of the connection.

[0034] Preferably, the inner wall of the plug-in cavity 8 is provided with supporting ribs 23 supported on the aluminum bar 19 to further improve the stability of the connection.

[0035] Preferably, the insertion cavity 8 is arranged in a high and low position, and the adjacent ends are overlapped to reduce the width of the product, and the aluminum bars 19 are staggered to improve safety.

[0036] Preferably, mounting ear plates 24 are provided on both sides of the housing 1 to facilitate the installation of the adapter box. At the same time, metal bushings 26 are embedded in the mounting ear plates 24 to improve the installation strength of the screw holes.

[0037] Preferably, a wire clamp 25 is provided at the end of the copper wire installation cavity 13 , and the insulation layer on the surface of the copper wire 18 is clamped by the wire clamp 25 to further improve the connection strength of the copper wire 18 .

[0038] The above does not impose any form of limitation on the present invention. Although the present invention has been disclosed as a preferred implementation case as above, it is not used to limit the present invention. Any technician familiar with the profession can make some changes or modifications to the equivalent implementation cases of equivalent changes by using the structure and technical content disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above implementation cases based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A copper-aluminum conductor transfer box, characterized in that: include: The housing (1) is provided with two axially penetrating plug-in cavities (8), the two ends of the plug-in cavity (8) are respectively provided with an aluminum row sealing groove (9) and a copper wire sealing groove (10), and the inner wall is provided with a clamping groove (11) and a positioning flange (12); A positioning seat (2) is installed in the plug-in cavity (8) of the housing (1), and is provided with a copper wire installation cavity (13) and an aluminum bar installation cavity (14), and a buckle (15) connected to the card slot (11) is provided at the bottom, at least one hook (16) is provided in the copper wire installation cavity (13), and at least one positioning rib (17) is provided in the aluminum bar installation cavity (14); An aluminum row sealing ring (3) installed in the aluminum row sealing groove (9) of the housing (1); A copper wire sealing ring (4) installed in the copper wire sealing groove (10) of the housing (1); An aluminum row tail cover (5) covering the aluminum row sealing groove (9) of the housing (1); A cable tail cover (6) covering the copper wire sealing groove (10) of the housing (1); The copper-aluminum conductor (7) is formed by ultrasonically welding a copper wire (18) and an aluminum bar (19); the welding end of the copper wire (18) is mounted in the copper wire mounting cavity (13) of the positioning seat (2); the welding end of the aluminum bar (19) is mounted in the aluminum bar mounting cavity (14) of the positioning seat (2); and a positioning groove (20) is provided to cooperate with the positioning rib (17).

2. The copper-aluminum conductor transfer box according to claim 1, characterized in that: A positioning step (21) is formed between the copper wire installation cavity (13) and the aluminum bar installation cavity (14), and a positioning notch (22) is provided on the aluminum bar (19) for positioning with the positioning step (21).

3. The copper-aluminum conductor transfer box according to claim 1, characterized in that: The inner wall of the insertion cavity (8) is provided with a supporting rib (23) supported on the aluminum bar (19).

4. The copper-aluminum conductor transfer box according to claim 1, characterized in that: The insertion cavity (8) is arranged in a high and low configuration, and adjacent ends thereof overlap.

5. The copper-aluminum conductor transfer box according to claim 1, characterized in that: Mounting ear plates (24) are provided on both sides of the housing (1).

6. The copper-aluminum conductor transfer box according to claim 1, characterized in that: A conductor clamp (25) is provided at the end of the copper wire installation cavity (13).

7. The copper-aluminum conductor transfer box according to claim 5, characterized in that: The mounting ear plate (24) is embedded with a metal bushing (26).

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