High-waterproof-grade copper-aluminum bar junction box

Abstract

The utility model discloses a copper-aluminum row junction box with a high waterproof grade. According to the technical scheme, the copper-aluminum bar connector is used for connecting copper-aluminum bars, each copper-aluminum bar is formed by welding a copper bar and an aluminum bar, the copper-aluminum bar connector comprises a shell, the shell is provided with two parallel insertion cavities, an aluminum bar sealing groove and a copper bar sealing groove are formed in the two ends corresponding to the insertion cavities respectively, at least two clamping grooves are formed in each insertion cavity, and positioning flanges are arranged at the ends, away from the clamping grooves, of the insertion cavities; the retaining buckle is mounted in the insertion cavity, the bottom of the retaining buckle is provided with an elastic buckle for hanging and clamping the clamping groove, and the top of the retaining buckle is provided with a clamping table abutting against the top of the copper bar or the aluminum bar; the copper bar sealing ring is arranged in the copper bar sealing groove of the shell; the aluminum row sealing ring is arranged in the aluminum row sealing groove of the shell; the copper bar tail cover covers the copper bar sealing groove of the shell; and the aluminum row tail cover covers the aluminum row sealing groove of the shell.

Description

Technical Field

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

[0002] Copper-aluminum busbar is a wire made of two different metals, copper busbar and aluminum busbar, welded by ultrasonic welding. The conductivity of copper-aluminum busbar 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 junction box is usually provided at the connection of copper-aluminum wire, which is used to fix and seal the connection. The disadvantages of traditional junction 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, generally IP66 level. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a copper-aluminum row junction box with a high waterproof grade.

[0004] In order to solve the above problems, the utility model adopts a technical solution: for connecting copper-aluminum bars, the copper-aluminum bars are welded by copper bars and aluminum bars, and include:

[0005] The housing is provided with two parallel plug-in cavities, and an aluminum bar sealing groove and a copper bar sealing groove are respectively provided at the two ends of the corresponding plug-in cavities, and at least two card slots are provided in each of the plug-in cavities, and a positioning flange is provided away from the card slot end;

[0006] A stop buckle is installed in the plug-in cavity, and has an elastic buckle at the bottom for hanging and engaging the card slot, and a clamping platform at the top for abutting against the top of the copper bar or aluminum bar;

[0007] A copper bar sealing ring installed in the copper bar sealing groove of the housing;

[0008] An aluminum row sealing ring is installed in the aluminum row sealing groove of the housing;

[0009] A copper busbar tail cover, covering the copper busbar sealing groove of the housing;

[0010] The aluminum row tail cover covers the aluminum row sealing groove of the housing.

[0011] The high waterproof grade copper-aluminum busbar junction box is characterized in that: the rear end of the copper busbar sealing ring is provided with a conical sealing portion extending out of the copper busbar sealing groove, and the front end of the copper busbar tail cover is provided with a conical groove adapted to the conical sealing portion.

[0012] The high waterproof grade copper-aluminum busbar junction box is characterized in that the copper busbar tail cover is fastened by screws and exerts pressure on the conical sealing portion of the copper busbar sealing ring.

[0013] The high waterproof grade copper-aluminum bar junction box is characterized in that: mounting plates are integrally formed on both sides of the shell, and the mounting plates are provided with long strip screw holes.

[0014] The high waterproof grade copper-aluminum busbar junction box is characterized in that the clamping platform of the retaining buckle abuts against the top of the copper busbar, and the positioning flange abuts against the top of the aluminum busbar.

[0015] The high waterproof grade copper-aluminum busbar junction box is characterized in that the surfaces of the copper busbar and the aluminum busbar are easily wrapped with an insulating layer.

[0016] The high waterproof grade copper-aluminum busbar junction box is characterized in that a supporting rib abutting against the bottom of the retaining buckle is provided between adjacent slots.

[0017] The advantages of the high waterproof grade copper-aluminum row junction box of the utility model are as follows:

[0018] 1. Adopt modular design and add special limit structure to reduce the impact of vibration on the product, and have better stability and tensile resistance;

[0019] 2. Simple design reduces space occupation while ensuring product functional stability, and has the characteristics of light weight and high reliability;

[0020] 3. The sealing performance is better, so that the protection level of the product can meet IP68 and IP6K9K in the overall state.

[0021] The utility model is further described below in conjunction with the accompanying drawings of the specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a cross-sectional view of the utility model high waterproof grade copper-aluminum busbar junction box;

[0023] Figure 2 This is an exploded view of the utility model's high waterproof grade copper-aluminum busbar junction box;

[0024] Figure 3 It is a cross-sectional view of the housing of the utility model;

[0025] Figure 4 It is a structural schematic diagram of the anti-retraction buckle of the utility model. DETAILED DESCRIPTION

[0026] Reference Figure 1-Figure 4As shown, the utility model of the high waterproof copper-aluminum bar junction box is used to connect the copper-aluminum bar 1, the copper-aluminum bar 1 is made of copper bar 2 and aluminum bar 3 by ultrasonic welding, and the surfaces of the copper bar 2 and aluminum bar 3 are easily wrapped with an insulating layer 22. The junction box includes: a shell 4, a stop buckle 5, a copper bar sealing ring 6, an aluminum bar sealing ring 7, an aluminum bar sealing ring 7 and an aluminum bar tail cover 9. Two parallel plug-in cavities 10 are arranged in the shell 4, and the two ends of the shell 4 corresponding to the plug-in cavities 10 are respectively provided with an aluminum bar sealing groove 11 and a copper bar sealing groove 12, each of the plug-in cavities 10 is provided with two card slots 13, and the plug-in cavity 10 is provided with a positioning flange 14 at the end away from the card slot 13. The anti-retraction buckle 5 is installed in the plug-in cavity 10. The width of the anti-retraction buckle 5 is ideally adapted to the plug-in cavity 10. The bottom of the anti-retraction buckle 5 is provided with an elastic buckle 15 for hanging and clamping the clamping groove 13. The top of the anti-retraction buckle 5 is provided with a clamping platform 16 against the top of the copper bar 2 or the aluminum bar 3. The copper bar sealing ring 6 is installed in the copper bar sealing groove 12 of the shell 4. The aluminum bar sealing ring 7 is installed in the aluminum bar sealing groove 11 of the shell 4. The copper bar tail cover 8 covers the copper bar sealing groove 12 of the shell 4. The aluminum bar tail cover 9 covers the aluminum bar sealing groove 11 of the shell 4 and is connected by a hook.

[0027] Preferably, the rear end of the copper bar sealing ring 6 is provided with a conical sealing portion 17 extending out of the copper bar sealing groove 12, and the front end of the copper bar tail cover 8 is provided with a conical groove 18 adapted to the conical sealing portion 17. After assembly, the conical sealing portion 17 is embedded in the conical groove 18 to further improve the sealing performance.

[0028] Preferably, the copper busbar tail cover 8 is fastened by screws 19 so that the copper busbar tail cover 8 applies pressure to the conical sealing portion 17 of the copper busbar sealing ring 6, thereby further improving the sealing performance.

[0029] Preferably, mounting plates 20 are integrally formed on both sides of the housing 4, and the mounting plates 20 are provided with elongated screw holes 21, which facilitate the adjustment of the mounting position, thereby facilitating the connection between the housing 4 and the car.

[0030] Preferably, the clamping platform 16 of the anti-retraction buckle 5 abuts against the top of the copper bar 2, and the positioning flange 14 abuts against the top of the aluminum bar 3. Since the copper bar 2 of the copper-aluminum bar 1 is thinner and has high strength, the anti-retraction buckle 5 abuts against the copper bar 2 for better stability and can be made thinner.

[0031] Preferably, a supporting rib 23 abutting against the bottom of the anti-retraction buckle 5 is provided between adjacent slots 13 to improve the installation stability of the anti-retraction buckle 5 and further improve the connection stability of the copper-aluminum busbar 1 .

[0032] 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 high waterproof copper-aluminum busbar junction box, used for connecting a copper-aluminum busbar (1), wherein the copper-aluminum busbar (1) is welded from a copper busbar (2) and an aluminum busbar (3), characterized in that: include: The housing (4) is provided with two parallel plug-in cavities (10), and an aluminum bar sealing groove (11) and a copper bar sealing groove (12) are respectively provided at two ends of the corresponding plug-in cavities (10), and at least two card slots (13) are provided in each of the plug-in cavities (10), and a positioning flange (14) is provided at the end away from the card slot (13); A stop buckle (5) is installed in the insertion cavity (10), and has an elastic buckle (15) at the bottom for hanging and engaging with the clamping slot (13), and a clamping platform (16) at the top for abutting against the top of the copper bar (2) or the aluminum bar (3); A copper bar sealing ring (6) installed in the copper bar sealing groove (12) of the housing (4); An aluminum row sealing ring (7) installed in the aluminum row sealing groove (11) of the housing (4); A copper busbar tail cover (8) covering the copper busbar sealing groove (12) of the housing (4); An aluminum row tail cover (9) covers the aluminum row sealing groove (11) of the housing (4).

2. The high waterproof grade copper-aluminum busbar junction box according to claim 1 is characterized in that: The copper bar sealing ring (6) has a conical sealing portion (17) extending out of the copper bar sealing groove (12) at the rear end, and the copper bar tail cover (8) has a conical groove (18) adapted to the conical sealing portion (17) at the front end.

3. The high waterproof grade copper-aluminum busbar junction box according to claim 2 is characterized in that: The copper busbar tail cover (8) is fastened by screws (19) and applies pressure to the conical sealing portion (17) of the copper busbar sealing ring (6).

4. The high waterproof grade copper-aluminum busbar junction box according to claim 1 is characterized in that: Mounting plates (20) are integrally formed on both sides of the housing (4), and the mounting plates (20) are provided with long strip-shaped screw holes (21).

5. The high waterproof grade copper-aluminum busbar junction box according to claim 1 is characterized in that: The clamping platform (16) of the anti-retraction clamp (5) abuts against the top of the copper bar (2), and the positioning flange (14) abuts against the top of the aluminum bar (3).

6. The high waterproof grade copper-aluminum busbar junction box according to claim 1 is characterized in that: The surfaces of the copper busbar (2) and the aluminum busbar (3) are easily covered with an insulating layer (22).

7. The high waterproof grade copper-aluminum busbar junction box according to claim 1 is characterized in that: A supporting rib (23) is provided between adjacent clamping slots (13) and abuts against the bottom of the retaining buckle (5).

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