Sealed waterproof fuse box

Abstract

The utility model belongs to the technical field of automobile accessories, and particularly relates to a sealed waterproof fuse box, which comprises a lower cover, an upper cover, a circuit board assembly and a fuse main body, the fuse main body is fixed inside the lower cover in a clamping manner, a busbar, a connecting sheet and a fuse sheet are mounted on the fuse main body, and a bottom cover is mounted at the lower end of the fuse main body. The circuit board assembly is fixed in the bottom cover, the upper cover is installed above the lower cover, the circuit board assembly and the fuse main body are matched to be suitable for various new energy pure electricity and mixed electricity vehicle types, the impact of instant large current can be faced, a protection function can be provided for a wire harness, in addition, the circuit board assembly is spliced on the fuse main body, and the safety performance is improved. The fuse main body is installed in the lower cover in a clamping mode, dismounting and mounting are more convenient, and the circuit board assembly and the fuse main body which are designed in a modularized mode have the advantages of being high in universality and platform function.

Description

Technical Field

[0001] The utility model belongs to the technical field of automotive parts, and particularly relates to a sealed and waterproof fuse box. Background Art

[0002] The function of an automotive fuse box is to provide protection for wiring harnesses against instantaneous high-current impacts. Each component inside is fixed and installed using threaded fasteners. Its structural shape is fixed and cannot be adjusted according to the actual usage location, so there are certain defects in universality.

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

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

[0005] A sealed and waterproof fuse box includes a lower cover, an upper cover, a circuit board assembly, and a fuse body. The fuse body is fixed inside the lower cover in a snap-fit installation manner. A bus bar, a connecting piece, and a fuse piece are installed on the fuse body. A bottom cover is installed at the lower end of the fuse body. The circuit board assembly is fixed inside the bottom cover, and the upper cover is installed above the lower cover.

[0006] As a preferred solution, multiple through holes and slots located at the through holes are provided on the side of the lower cover. A sealing plug for the wiring harness to pass through is installed in the slot, and the sealing plug covers the opening of the through hole.

[0007] As a preferred solution, a positioning groove is provided around the outer wall of the sealing plug, and a positioning rib extending into the positioning groove is provided on the inner wall of the slot.

[0008] As a preferred solution, a waterproof plate surrounding the side of the upper cover for one week is provided inside the upper cover. A waterproof groove is formed between the waterproof plate and the inner wall side of the upper cover, and the top of the upper cover extends into the waterproof groove.

[0009] As a preferred solution, a sealing ring is installed at the top of the waterproof groove, and the top of the lower cover abuts against the sealing ring.

[0010] As a preferred solution, multiple tuning fork fuses are installed on the circuit board assembly, and multiple fuse inserts located above each tuning fork fuse are installed on the fuse body. The lower end of the fuse insert is inserted into the upper end of the tuning fork fuse.

[0011] As a preferred solution, multiple positioning members are provided inside the lower cover, and corresponding fasteners are provided on the fuse body. The fasteners are installed inside the positioning members.

[0012] Compared with the existing technology, the advantages of the utility model are as follows:

[0013] 1. The circuit board assembly and fuse body of the present utility model are suitable for various new energy pure electric and hybrid electric vehicle models. Facing the impact of instantaneous large current, it can provide protection function for the wire harness. In addition, the circuit board assembly is spliced on the fuse body, and the fuse body is installed in the lower cover by a snap connection method, which is more convenient for disassembly and assembly. Moreover, the modular designed circuit board assembly and fuse body have the advantages of strong versatility and platform function.

[0014] 2. The present utility model uses a sealing plug to waterproof the through hole, and uses a sealing ring to waterproof the gap between the lower cover and the upper cover, thereby realizing the overall waterproof function of the fuse box, and can meet the requirement that the vehicle body can still work normally after being immersed in water. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the present utility model.

[0016] Figure 2 is a schematic diagram of the internal structure of the lower cover of the present utility model.

[0017] Figure 3 is a cross-sectional schematic diagram of the present utility model.

[0018] Figure 4 is a schematic diagram of the fuse body of the present utility model.

[0019] Names of the reference numerals in the figures: 1. Lower cover; 2. Upper cover; 3. Circuit board assembly; 4. Fuse body; 5. Bus bar; 6. Connecting piece; 7. Fuse piece; 8. Bottom cover; 9. Through hole; 10. Slot; 11. Sealing plug; 12. Positioning groove; 13. Positioning rib; 14. Waterproof plate; 16. Sealing ring; 17. Fork-type fuse; 18. Fuse insert; 19. Positioning member; 20. Fastening member. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following will further describe 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.

[0021] A sealed and waterproof fuse box, as Figures 1 to 4 shown, includes a lower cover 1, an upper cover 2, a circuit board assembly 3, and a fuse body 4. The fuse body 4 is fixed inside the lower cover 1 by a snap connection installation method. A bus bar 5, a connecting piece 6, and a fuse piece 7 are installed on the fuse body 4. A bottom cover 8 is installed at the lower end of the fuse body 4. The circuit board assembly 3 is fixed in the bottom cover 8, and the upper cover 2 is installed above the lower cover 1.

[0022] The circuit board assembly 3 and the fuse body 4 are suitable for various new energy pure electric and hybrid electric vehicle models. In the face of the impact of instantaneous large current, they can provide protection for the wire harness. In addition, the circuit board assembly 3 is spliced on the fuse body 4, and the fuse body 4 is installed in the lower cover 1 in a snap-fit manner, making disassembly and assembly more convenient. Moreover, the circuit board assembly 3 and the fuse body 4 with modular design have the advantages of strong versatility and platform function.

[0023] As Figure 2 and Figure 3 shown, multiple through holes 9 and slots 10 located at the through holes 9 are provided on the side of the lower cover 1. A sealing plug 11 for the wire harness to pass through is installed in the slot 10, and the sealing plug 11 covers the opening of the through hole 9.

[0024] A positioning groove 12 is provided around the outer wall of the sealing plug 11, and a positioning rib 13 extending into the positioning groove 12 is provided on the inner wall of the slot 10.

[0025] A waterproof plate 14 surrounding the side of the upper cover 2 is provided inside the upper cover 2. A groove is formed between the waterproof plate 14 and the inner wall side of the upper cover 2. The top of the upper cover 2 extends into the groove, and a sealing ring 16 is installed at the top of the groove. The top of the lower cover 1 abuts against the sealing ring 16.

[0026] The waterproof plug 11 waterproofs the through hole 9, and the sealing ring 16 waterproofs the gap between the lower cover 1 and the upper cover 2, thereby realizing the overall waterproof function of the fuse box and enabling the vehicle body to still work normally after being immersed in water.

[0027] As Figures 2 to 4 shown, multiple tuning fork fuses 17 are installed on the circuit board assembly 3, and multiple fuse inserts 18 located above each tuning fork fuse 17 are installed on the fuse body 4. The lower end of the fuse insert 18 is inserted into the upper end of the tuning fork fuse 17.

[0028] Multiple positioning members 19 are provided inside the lower cover 1, and corresponding fastening members 20 are provided on the fuse body 4. The fastening members 20 are installed in the positioning members 19.

[0029] The above is only a preferred embodiment of the present invention, and does not impose any form of limitation on the present invention. Any simple modification or equivalent change made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A sealed and waterproof fuse box, characterized in that: The invention comprises a lower cover (1), an upper cover (2), a circuit board assembly (3), and a fuse body (4); the fuse body (4) is fixed inside the lower cover (1) in a snap-fit ​​installation manner; a bus bar (5), a connecting piece (6), and a fuse piece (7) are installed on the fuse body (4); a bottom cover (8) is installed at the lower end of the fuse body (4); the circuit board assembly (3) is fixed inside the bottom cover (8), and the upper cover (2) is installed above the lower cover (1).

2. A sealed and waterproof fuse box according to claim 1, characterized in that: The side surface of the lower cover (1) is provided with a plurality of through holes (9) and slots (10) located at the through holes (9), and a sealing plug (11) for the wiring harness to pass through is installed in the slot (10), and the sealing plug (11) covers the opening of the through hole (9).

3. A sealed and waterproof fuse box according to claim 2, characterized in that: The outer wall of the sealing plug (11) is provided with a positioning groove (12) around it, and the inner wall of the slot (10) is provided with a positioning convex strip (13) extending into the positioning groove (12).

4. A sealed and waterproof fuse box according to claim 2, characterized in that: The upper cover (2) is provided with a waterproof plate (14) surrounding the side of the upper cover (2), a groove is formed between the waterproof plate (14) and the inner wall side of the upper cover (2), and the top of the upper cover (2) extends into the groove.

5. A sealed and waterproof fuse box according to claim 4, characterized in that: A sealing ring (16) is installed at the top of the groove, and the top of the lower cover (1) abuts against the sealing ring (16).

6. The sealed and waterproof fuse box according to claim 1, characterized in that: A plurality of tuning fork-type fuses (17) are mounted on the circuit board assembly (3), a plurality of insurance plugs (18) located above each tuning fork-type fuse (17) are mounted on the insurance body (4), and the lower ends of the insurance plugs (18) are inserted into the upper ends of the tuning fork-type fuses (17).

7. The sealed and waterproof fuse box according to claim 1, characterized in that: A plurality of positioning pieces (19) are provided inside the lower cover (1), and a fastener (20) corresponding to the positioning pieces (19) is provided on the insurance body (4), and the fastener (20) is installed inside the positioning piece (19).

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