Two-to-four automobile high-voltage junction box

Abstract

The utility model discloses a 2-to-4 automobile high-voltage junction box which is simple in structure, small in size, convenient to install and more reliable. According to the technical scheme, the junction box comprises a shell, a two-core tail cover and a four-core tail cover, the two-core tail cover and the four-core tail cover are arranged at the two ends of the shell respectively, the shell is provided with two independently-spaced installation cavities, a junction box rubber core seat is inserted into each installation cavity and connected with a clamping table in the shell through a buckle, and the junction box rubber core seats are connected with the clamping table in the shell through buckles. The junction box rubber core seat is provided with a left-right through main wire duct, one side of the main wire duct is provided with a junction duct, and the junction box rubber core seat is covered with a junction box rubber core cover.

Description

Technical Field

[0001] The utility model belongs to the field of high-voltage wiring harnesses for new energy vehicles, and in particular relates to a high-voltage junction box for an automobile. Background Art

[0002] The high-voltage junction box of an automobile connects the high-voltage power supply to various devices that need power supply through the wires and connectors inside it. The structure of a traditional automobile high-voltage junction box is shown in the Chinese utility model patent with the authorization announcement number "CN 214874640 U" and the name "A Automobile High-Voltage Junction Box". It includes: a junction box, a relay installed in the junction box body, a connector for connecting to the battery pack and a first connector for connecting to the control relay installed at the input end of the junction box body, a second connector and a third connector installed at the output end for connecting to the fast charging seat and the motor controller; a connection part for connecting to the vehicle body is installed outside the junction box body. The disadvantages are: complex structure, large size, difficult installation, poor reliability of terminal connectors, and unstable energy transmission under complex working conditions. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a 2-to-4 automobile high-voltage junction box which is simple in structure, compact in size, easy to install and more reliable.

[0004] In order to solve the above problems, the technical solution adopted by the present invention is: a shell and a two-core tail cover and a four-core tail cover respectively arranged at both ends of the shell, characterized in that: the shell is provided with two independently spaced installation cavities, and a junction box core seat is inserted in each of the installation cavities, the junction box core seat is connected to the card table in the shell through a snap, the junction box core seat is provided with a main line groove running through the left and right, and a branch line groove is provided on one side of the main line groove, and the junction box core seat is covered with a junction box core cover.

[0005] The 2-to-4 automotive high-voltage junction box is characterized in that it also includes a main cable and a branch cable welded to the main cable. The main cable passes through the two-core tail cover and the main line trough in sequence and then comes out from the four-core tail cover. The branch cable passes through the branch trough and then comes out from the four-core tail cover.

[0006] The 2-to-4 automotive high-voltage junction box is characterized in that sealing bodies are provided at both ends of the shell.

[0007] The 2-to-4 automotive high-voltage junction box is characterized in that: first cable clamps are provided at both ends of the main line trough, and an upper wire core positioning boss and a lower wire core positioning boss are provided in the middle of the main line trough.

[0008] The 2-to-4 automotive high-voltage junction box is characterized in that: the junction box rubber core seat includes a positive junction box rubber core seat and a negative junction box rubber core seat, a first inclined surface is provided below the rear end of the positive junction box rubber core seat, and a second inclined surface is provided above the rear end of the negative junction box rubber core seat, and the buckles are respectively provided on the first inclined surface and the second inclined surface.

[0009] The 2-to-4 automotive high-voltage junction box is characterized in that ear hole plates are provided on both sides of the shell.

[0010] The 2-to-4 automotive high-voltage junction box is characterized in that both the two-core tail cover and the four-core tail cover are provided with positioning posts embedded in the sealing body.

[0011] The 2-to-4 automotive high-voltage junction box is characterized in that a wire sheath is integrally formed on the two-core tail cover and the four-core tail cover, and a circumferentially arranged second cable clamp is provided inside the wire sheath.

[0012] The 2-to-4 automotive high-voltage junction box is characterized in that a bushing is embedded in the ear hole plate.

[0013] The advantages of the 2-to-4 automotive high-voltage junction box of this utility model are as follows: 1. After the distribution cable is ultrasonically welded to the main cable, it is installed in the junction box's rubber core seat, and then the junction box's rubber core seat is inserted into the shell to complete the assembly. It not only has a simple structure and a compact size, but also is very convenient to assemble; 2. Because the cables are connected by ultrasonic welding, the temperature rise is low and the reliability is high.

[0014] The present invention will be further described below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is an exploded view of the utility model's 2-to-4 automotive high-voltage junction box;

[0016] Figure 2 This is a cross-sectional view of the utility model's 2-to-4 automotive high-voltage junction box;

[0017] Figure 3 This is a structural diagram of the utility model junction box rubber core seat;

[0018] Figure 4 This is a schematic diagram of the structure of the four-core tail cover of the utility model;

[0019] Figure 5 This is a schematic diagram of the rear end structure of the positive junction box rubber core seat and the negative junction box rubber core seat of the utility model;

[0020] Figure 6 The utility model is a schematic diagram of the front end structure of the positive junction box rubber core seat and the negative junction box rubber core seat. DETAILED DESCRIPTION

[0021] Reference Figures 1-6 As shown, the 2-to-4 automotive high-voltage junction box of the present invention comprises a shell 1 and a two-core tail cover 2 and a four-core tail cover 3 respectively arranged at both ends of the shell 1. The shell 1 is provided with two independently spaced installation cavities 4, and a junction box core seat 5 is inserted into each of the installation cavities 4. The junction box core seat 5 is connected to the card platform 7 in the shell 1 through a snap 6. When the junction box core seat 5 is inserted into place from the end of the installation cavity 4, the snap 6 is snapped into the card platform 7. The junction box core seat 5 is provided with a main line groove 8 that passes through the left and right, and a branch line groove 9 is provided on one side of the main line groove 8. The junction box core seat 5 is covered with a junction box core cover 10. The junction box core cover 10 is connected to the hanging platform 22 on both sides with the hanging groove 23 on the junction box core seat 5.

[0022] Preferably, the wiring harness also includes a main cable 11 and a branch cable 12 ultrasonically welded to the main cable 11. The main cable 11 is typically 95 square meters, while the branch cable 12 is typically 25 square meters. The main cable 11 sequentially passes through the two-core tail cover 2 and the main cable duct 8 before exiting the four-core tail cover 3. The branch cable 12 passes through the branch cable duct 9 before exiting the four-core tail cover 3. This completes the wiring harness assembly, facilitating subsequent wiring in the vehicle.

[0023] Preferably, sealing bodies 13 are provided at both ends of the housing 1 to achieve sealing of the main cable 11 and the branch cable 12 .

[0024] Preferably, the main cable duct 8 is provided with first cable retaining ribs 14 at both ends, and upper and lower core positioning bosses 15, 16 in the middle of the main cable duct 8. When the junction box plastic core cover 10 is closed on the housing 1, the first cable retaining ribs 14 engage with the insulation layer of the cable, and the upper and lower core positioning bosses 15, 16 are positioned on the cable cores, thereby securing the cable and improving its resistance to pulling.

[0025] Preferably, the junction box core seat 5 includes a positive junction box core seat 501 and a negative junction box core seat 502. A first inclined surface 503 is provided below the rear end of the positive junction box core seat 501, and a second inclined surface 504 is provided above the rear end of the negative junction box core seat 502. The buckle 6 is provided on the first inclined surface 503 and the second inclined surface 504, respectively. Through the above structure, the positive junction box core seat 501 and the negative junction box core seat 502 can only be assembled with the shell 1 in one direction, thereby preventing the positive and negative poles from being installed in reverse. After the above structure is adopted, the main line slot 8 and the branch line slot 9 of the positive junction box core seat 501 and the negative junction box core seat 502 are in opposite positions to prevent wrong wiring.

[0026] Preferably, the housing 1 is provided with ear holes 17 on both sides to facilitate the connection between the housing 1 and the car. The ear holes 17 are embedded with bushings 21. The bushings 21 are made of alloy material to improve the strength of the ear holes 17.

[0027] Preferably, the two-core tail cover 2 and the four-core tail cover 3 are both provided with a positioning column 18 embedded in the sealing body 13 to fix the sealing body 13.

[0028] Preferably, the two-core tail cover 2 and the four-core tail cover 3 are integrally formed with a wire sheath 19. Circumferentially arranged second cable clamps 20 are provided within the wire sheath 19. The second cable clamps 20 clamp the insulation layer of the cable, thereby protecting and securing the cable.

[0029] The above does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with this profession can make some changes or modifications to the above-disclosed structures and technical contents without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments 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 2-to-4 automotive high-voltage junction box, comprising a housing (1) and a two-core tail cover (2) and a four-core tail cover (3) respectively arranged at both ends of the housing (1), characterized in that: The shell (1) is provided with two independently spaced installation cavities (4), and a junction box core seat (5) is inserted into each of the installation cavities (4). The junction box core seat (5) is connected to the card table (7) in the shell (1) through a buckle (6). The junction box core seat (5) is provided with a main line groove (8) running through left and right, and a branch line groove (9) is provided on one side of the main line groove (8). The junction box core seat (5) is covered with a junction box core cover (10).

2. The 2-to-4 automotive high-voltage junction box according to claim 1, characterized in that: It also includes a main cable (11) and a branch cable (12) welded to the main cable (11), wherein the main cable (11) passes through the two-core tail cover (2) and the main line duct (8) in sequence and then passes through the four-core tail cover (3), and the branch cable (12) passes through the branch line duct (9) and then passes through the four-core tail cover (3).

3. The 2-to-4 automotive high-voltage junction box according to claim 1, characterized in that: Sealing bodies (13) are provided at both ends of the housing (1).

4. The 2-to-4 automotive high-voltage junction box according to claim 1, characterized in that: The two ends of the main line trough (8) are provided with first cable clamping ribs (14), and the middle of the main line trough (8) is provided with an upper line core positioning boss (15) and a lower line core positioning boss (16).

5. The 2-to-4 automotive high-voltage junction box according to claim 1, characterized in that: The junction box plastic core seat (5) comprises a positive junction box plastic core seat (501) and a negative junction box plastic core seat (502); a first inclined surface (503) is provided below the rear end of the positive junction box plastic core seat (501); a second inclined surface (504) is provided above the rear end of the negative junction box plastic core seat (502); and the buckles (6) are provided on the first inclined surface (503) and the second inclined surface (504), respectively.

6. The 2-to-4 automotive high-voltage junction box according to claim 1, characterized in that: Ear hole plates (17) are provided on both sides of the housing (1).

7. The 2-to-4 automotive high-voltage junction box according to claim 3, characterized in that: The two-core tail cover (2) and the four-core tail cover (3) are both provided with a positioning column (18) embedded in the sealing body (13).

8. The 2-to-4 automotive high-voltage junction box according to claim 1, characterized in that: A wire sheath (19) is integrally formed on the two-core tail cover (2) and the four-core tail cover (3), and a circumferentially arranged second cable clamp (20) is provided in the wire sheath (19).

9. The 2-to-4 automotive high-voltage junction box according to claim 6, characterized in that: The ear hole plate (17) is embedded with a bushing (21).

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