Waterproof fuse base

Abstract

The utility model belongs to the technical field of fuses, and particularly relates to a waterproof fuse base which comprises a base body, a base upper cover, a safety piece, a waterproof ring and connecting wire harnesses, the safety piece is installed inside the base body, the two connecting wire harnesses are installed inside the base body, and the heads of the connecting wire harnesses are connected with the safety piece. An opening in the base body faces upwards, a waterproof interlayer is arranged outside the base body, a waterproof ring is installed in the waterproof interlayer, the lower end of the base upper cover is installed in the waterproof interlayer, and the inner wall of the base upper cover is tightly attached to the waterproof ring. The waterproof ring not only can provide a waterproof sealing effect for the gap between the base main body and the base upper cover, but also can fix the base upper cover on the base main body by virtue of friction force between the waterproof ring and the base upper cover, so that the mounting and dismounting actions on the base main body are realized; and the base upper cover can be quickly disassembled and the safety piece can be replaced, so that the circuit is re-connected.

Description

Technical Field

[0001] The utility model belongs to the technical field of fuses, and particularly relates to a waterproof fuse base. Background Art

[0002] When the current exceeds the specified value, the fuse uses the heat generated by the circuit itself to melt the fuse wire connecting the circuit, thereby disconnecting the circuit to achieve the protection function. In order to ensure that the fuse wire can be replaced conveniently after melting and the circuit can be restored, the fuse housing needs to have a quick opening and closing function. However, for the conventional fuses on the market to ensure the above functions, there is a lack of waterproof performance and they cannot be used in water-related environments.

[0003] The utility model designs a waterproof fuse base to solve the above problems. Content of the Utility Model

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A waterproof fuse base, which comprises a base main body, a base upper cover, a fuse piece, a waterproof ring and a connecting wire harness. The fuse piece is installed inside the base main body. Two connecting wire harnesses are installed inside the base main body and the heads of the wire harnesses are connected to the fuse piece. The opening inside the base main body is upward. A waterproof interlayer is arranged outside the base main body. The waterproof ring is installed in the waterproof interlayer. The lower end of the base upper cover is installed in the waterproof interlayer, and the inner wall of the base upper cover is closely attached to the waterproof ring.

[0006] As a preferred solution, a plurality of elastic protrusions are arranged outside the waterproof ring, and the elastic protrusions are closely attached to the inner wall of the base upper cover.

[0007] As a preferred solution, the elastic protrusions are distributed in a ring around the outer wall of the waterproof interlayer.

[0008] As a preferred solution, a positioning member is arranged on the base main body at the opening above the waterproof interlayer, and the waterproof ring is located below the positioning member.

[0009] As a preferred solution, the connecting wire harness is composed of a terminal and a wire. The head of the terminal is installed inside the base main body and is connected to the fuse piece. The tail of the terminal is connected to the wire and the connection part is wrapped with a heat shrinkable tube.

[0010] Compared with the existing technology, the advantages of the utility model are as follows:

[0011] 1. The waterproof ring designed by the present utility model can not only provide a waterproof sealing effect at the gap between the base body and the base upper cover, but also fix the base upper cover on the base body by relying on the friction between the waterproof ring and the base upper cover. Therefore, the base upper cover can be installed and disassembled on the base body in a way that it moves along the opening direction inside the base body. When the fuse is blown due to overload protection, the base upper cover can be quickly removed and the fuse can be replaced to reconnect the circuit. In addition, in the emergency state where the vehicle is shut down and locked or cannot be unlocked due to a circuit fault, the emergency rescue unlocking functions such as unlocking the car door and the hood door can be restored by quickly replacing the fuse. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic diagram of the present utility model.

[0013] Figure 2 is a schematic diagram inside the base body of the present utility model.

[0014] Figure 3 is a sectional schematic diagram of the present utility model.

[0015] Figure 4 is a schematic diagram of the waterproof ring of the present utility model.

[0016] Figure 5 is a schematic diagram of the connection wire harness of the present utility model.

[0017] Names of the reference numerals in the figures: 1. Base body; 2. Base upper cover; 3. Fuse; 4. Waterproof ring; 5. Connection wire harness; 6. Waterproof interlayer; 7. Elastic protrusion; 8. Positioning member; 9. Terminal; 10. Conducting wire; 11. Heat shrinkable tube. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following further describes in detail the specific embodiments of the present utility model in conjunction with the drawings and embodiments. The following embodiments or drawings are used to illustrate the present utility model, but not to limit the scope of the present utility model.

[0019] A waterproof fuse base, as Figures 1 to 5 shown, includes a base body 1, a base upper cover 2, a fuse 3, a waterproof ring 4 and a connection wire harness 5. The fuse 3 is installed inside the base body 1. Two connection wire harnesses 5 are installed inside the base body 1 and the heads of the connection wire harnesses 5 are connected to the fuse 3. The opening inside the base body 1 is arranged upward. A waterproof interlayer 6 is arranged outside the base body 1. The waterproof ring 4 is installed in the waterproof interlayer 6. The lower end of the base upper cover 2 is installed in the waterproof interlayer 6, and the inner wall of the base upper cover 2 is closely attached to the waterproof ring 4;

[0020] The waterproof ring 4 can not only provide a waterproof sealing effect at the gap between the base body 1 and the base upper cover 2, but also fix the base upper cover 2 on the base body 1 by relying on the frictional force between the waterproof ring 4 and the base upper cover 2. Therefore, the base upper cover 2 can be installed and disassembled on the base body 1 in a way that it can move along the opening direction inside the base body 1. When the fuse piece 3 is melted due to overload protection, the base upper cover 2 can be quickly removed and the fuse piece 3 can be replaced to reconnect the circuit. In addition, in the emergency state where the vehicle is shut down and locked or cannot be unlocked due to a circuit fault, the emergency rescue unlocking functions such as unlocking the car door and the hood door can be restored by quickly replacing the fuse piece 3.

[0021] As Figure 4 shown, a plurality of elastic protrusions 7 are arranged outside the waterproof ring 4. The elastic protrusions 7 are closely attached to the inner wall of the base upper cover 2, and the elastic protrusions 7 are arranged in a ring around the outer wall of the waterproof interlayer 6;

[0022] When the base upper cover 2 is installed on the base body 1, the elastic protrusions 7 are squeezed and deformed by the inner wall of the base upper cover 2, increasing the frictional force between the waterproof ring 4 and the inner wall of the base upper cover 2, not only improving the waterproof effect, but also making the base upper cover 2 more stably fixed on the base body 1.

[0023] As Figure 2 shown, a positioning member 8 is arranged on the base body 1 at the opening above the waterproof interlayer 6. The waterproof ring 4 is located below the positioning member 8. The positioning member 8 has a limiting function on the waterproof ring 4, preventing the waterproof ring 4 from being taken away from the base body 1 by the frictional force when the base upper cover 2 is lifted and separated from the base body 1.

[0024] As Figure 5 shown, the connecting wire harness 5 is composed of a terminal 9 and a wire 10. The head of the terminal 9 is installed inside the base body 1 and connected to the fuse piece 3. The base body 1 and the terminal 9 are integrally injection-molded. The tail of the terminal 9 is connected to the wire 10 and the connection part is wrapped with a heat shrinkable tube 11. The terminal 9 and the wire 10 are connected and fixed by crimping and welding to improve the sealing performance of the wire harness.

[0025] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Any simple modification and equivalent change made to the above embodiments based on the technical essence of the present invention all fall within the protection scope of the present invention.

Claims

1. A waterproof fuse base, characterized in that: It includes a base body (1), a base upper cover (2), a fuse piece (3), a waterproof ring (4) and a connecting wire harness (5). The fuse piece (3) is installed inside the base body (1). Two connecting wire harnesses (5) are installed inside the base body (1) and the heads of the wire harnesses (5) are connected to the fuse piece (3). The inside of the base body (1) has an opening facing upwards. A waterproof interlayer (6) is provided outside the base body (1). The waterproof ring (4) is installed in the waterproof interlayer (6). The lower end of the base upper cover (2) is installed in the waterproof interlayer (6), and the inner wall of the base upper cover (2) closely adheres to the waterproof ring (4).

2. The waterproof fuse base according to claim 1, wherein: A plurality of elastic protrusions (7) are provided outside the waterproof ring (4), and the elastic protrusions (7) closely adhere to the inner wall of the base upper cover (2).

3. The waterproof fuse base according to claim 2, characterized in that: The elastic protrusions (7) are distributed in a circumferential manner along the outer wall of the waterproof interlayer (6).

4. A waterproof fuse base according to claim 1, characterized in that: A positioning member (8) is provided on the base body (1) at the opening above the waterproof interlayer (6), and the waterproof ring (4) is located below the positioning member (8).

5. The waterproof fuse base according to claim 1, characterized in that: The connecting wire harness (5) is composed of a terminal (9) and a wire (10). The head of the terminal (9) is installed inside the base body (1) and is connected to the fuse piece (3). The tail of the terminal (9) is connected to the wire (10), and the connection part is wrapped with a heat shrinkable tube (11).

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