An automobile fuse box
By designing a fuse box with a detachable housing assembly and a bellows, the problems of wire harness displacement and wear under vibration conditions were solved, achieving stability and reliability of wire harness connections and extending the service life of the fuse box.
Patent Information
- Application Number
- CN202621129090.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2026-07-24
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2036-07-24
AI Technical Summary
Under vibration conditions, existing automotive fuse boxes are prone to relative displacement and friction at the connection between the wiring harness and the fuse, leading to mechanical wear, loose contact, and affecting reliability and lifespan.
A fuse box comprising a housing, a cover assembly, and a bellows is designed. Through the detachable installation of the cover assembly and the elastic hook structure, combined with the limiting and slot design of the sealing sleeve and the housing, a stable connection of the wire harness is achieved, reducing the risk of mechanical wear and loose contact.
It effectively resists engine vibration and road bumps, improves the stability and reliability of wiring harness connections, reduces mechanical wear, and enhances service life and convenience.
Smart Images

Figure CN224683086U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive technology, specifically to an automotive fuse box. Background Technology
[0002] The automotive fuse box is a core protection device for the vehicle's electrical system, used to install fuses to protect each electrical circuit.
[0003] In existing fuse boxes, the wiring harness is typically connected to the fuse pins via terminals to achieve circuit continuity. During actual vehicle operation, engine operation and road bumps continuously generate vibrations, causing relative displacement and friction at the connection between the wiring harness and the fuse. Under long-term vibration, the wiring harness is prone to mechanical wear and loosening of contacts, leading to increased contact resistance, excessive local temperature rise, and even circuit open or short circuit faults, seriously affecting the reliability and service life of the fuse box. Utility Model Content
[0004] Therefore, this utility model provides an automotive fuse box, including a box body, a cover assembly detachably installed on one side of the box body, and a plurality of corrugated tubes. A fuse is installed inside the box body, and the corrugated tubes are used for inserting wire harnesses. At least one first slot is formed on the inner wall of the cover assembly for the corrugated protrusions of the corrugated tubes to be inserted.
[0005] The housing assembly includes a first housing and a second housing, which together form a mounting cavity for installing the bellows. The first housing and the second housing are assembled by an elastic hook structure, which includes a hook block disposed on one of the first housing and the second housing, and an elastic hook disposed on the other housing and hooked to the hook block.
[0006] The elastic hook structure is located on both sides of the bellows.
[0007] The outer wall of the box is formed with an outwardly extending wire harness mounting tube. The end of the wire harness mounting tube away from the box is formed with a locking block. The side of the cover assembly near the box is formed with a second slot for the locking block to be inserted. The outer wall of the wire harness mounting tube near the locking block is formed with a first slot. The two ends of the sealing ring have protruding rings that are respectively inserted into the first slot and the second slot.
[0008] Both the first card slot and the second card slot are annular card slots.
[0009] A sealing sleeve is installed at the wire harness mounting tube. The sealing sleeve has a retaining ring that extends out of the wire harness mounting tube. A first step is formed on the inner wall of the box body, which abuts against the side of the retaining ring away from the wire harness mounting tube.
[0010] The retaining ring is formed with a mounting groove for inserting the end of the bellows, and the bottom of the mounting groove is a second step that abuts against the end of the bellows.
[0011] The box body includes a cover, a base, and an elastic connecting strap, which is used to connect the cover and the base when the cover is open.
[0012] One end of the elastic connecting strip is provided with an elastic buckle, and the other end is provided with a collar. The cover plate is provided with a connecting hole for the elastic buckle to be inserted, and the outer wall of the base is provided with a T-shaped connecting post that engages with the collar.
[0013] The technical solution of this utility model has the following advantages: 1. The automotive fuse box provided by this utility model includes a box body, a cover assembly, and a bellows. The cover assembly is detachably installed on the box body, and the inner wall of the cover assembly is formed with at least one first slot for the bellows to be inserted into, thereby realizing the quick installation of the bellows. The bellows can better protect the display, effectively resist the continuous vibration caused by engine vibration and road bumps, avoid relative displacement and friction at the connection between the wiring harness and the fuse, and reduce the risk of mechanical wear and loose contact.
[0014] 2. The automotive fuse box provided by this utility model achieves double limiting and sealing through the abutment of the sealing sleeve retaining ring with the first step of the inner wall of the box, and the abutment of the second step at the bottom of the retaining ring mounting groove with the end of the bellows, thereby further enhancing the stability and reliability of the wiring harness connection.
[0015] 3. The automotive fuse box provided by this utility model has a locking block formed at the end of the wiring harness mounting tube away from the box body, and a second slot formed on the side of the cover assembly near the box body to engage with the locking block, making installation quick and convenient.
[0016] 4. The automotive fuse box provided by this utility model includes a cover plate, a base and an elastic connecting strap. The elastic connecting strap connects the cover plate and the base when the cover plate is opened, preventing the cover plate from completely detaching from the base and causing loss or damage, thereby improving ease of use and structural integrity.
[0017] 5. The automotive fuse box provided by this utility model has an elastic buckle at one end of the elastic connecting strip that engages with the cover plate collar, and a connecting hole at the other end that engages with the T-shaped connecting post of the base. It is easy to assemble, reliable to connect, and facilitates quick disassembly and maintenance of the cover plate. Attached Figure Description
[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0019] Figure 1 This is a perspective view of the automotive fuse box of this utility model; Figure 2 A perspective view of the cover assembly of an automotive fuse box in its disassembled state; Figure 3 This is a schematic diagram of the first exploded structure of the casing assembly; Figure 4 This is a schematic diagram of the second exploded structure of the casing assembly; Figure 5 This is a cross-sectional view of a car fuse box. Figure 6 for Figure 5 A magnified structural diagram of part A in the middle; Figure 7 This is a schematic diagram showing the separation of the elastic connecting strip and the fuse box.
[0020] Explanation of reference numerals in the attached drawings: 1. Box body; 2. Cover assembly; 3. Corrugated pipe; 4. Fuse; 5. Corrugated protrusion; 6. First slot; 7. First cover; 8. Second cover; 11. Elastic hook; 12. Hook block; 13. Wire harness mounting tube; 14. Locking block; 15. Second slot; 19. Sealing sleeve; 20. Retaining ring; 21. First step; 22. Mounting groove; 23. Second step; 24. Cover plate; 25. Base; 26. Elastic connecting strip; 27. Elastic buckle; 28. Connecting hole; 29. Collar; 30. T-shaped connecting post. Detailed Implementation
[0021] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0024] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.
[0025] Example This embodiment provides an automotive fuse box, such as... Figure 1 and Figure 2 As shown, it includes a housing 1, a cover assembly 2 detachably mounted on one side of the housing 1, and multiple corrugated tubes 3. A fuse 4 is installed inside the housing 1, and the corrugated tubes 3 are used for inserting the wire harness.
[0026] The inner wall of the housing assembly 2 is formed with at least one first slot 6 into which the corrugated protrusion 5 of the bellows 3 is inserted. Figure 3 and Figure 4 As shown, the housing assembly 2 includes a first housing 7 and a second housing 8. The first housing 7 and the second housing 8 enclose a mounting cavity 9 for installing the bellows 3. The first housing 7 and the second housing 8 are assembled together by an elastic hook structure 10. The elastic hook structure 10 includes a hook block 12 disposed on one of the first housing 7 and the second housing 8, and an elastic hook 11 disposed on the other and hooked and connected to the hook block 12. In this embodiment, the elastic hook structure 10 is located on both sides of each bellows 3.
[0027] like Figure 5 and Figure 6As shown, a wire harness mounting tube 13 extending outward is formed on the outer wall of the housing 1. A locking block 14 is formed at the end of the wire harness mounting tube 13 away from the housing 1. A second locking groove 15 that engages with the locking block 14 is formed on the side of the cover assembly 2 near the housing 1. A first locking groove 6 is formed on the outer wall of the wire harness mounting tube 13 near the locking block 14. The sealing ring 17 has raised rings 18 at both ends that engage with the first locking groove 6 and the second locking groove 15 respectively. Both the first locking groove 6 and the second locking groove 15 are annular locking grooves. A sealing sleeve 19 is installed at the wire harness mounting tube 13. The sealing sleeve 19 has a retaining ring 20 extending out of the wire harness mounting tube 13. A first step 21 that abuts against the side of the retaining ring 20 away from the wire harness mounting tube 13 is formed on the inner wall of the housing 1. The retaining ring 20 has a mounting groove 22 for the end of the corrugated tube 3 to be inserted. The bottom of the mounting groove 22 is a second step 23 that abuts against the end of the corrugated tube 3.
[0028] Box 1, such as Figure 1 and Figure 7 As shown, the system includes a cover plate 24, a base 25, and an elastic connecting strap 26. The elastic connecting strap 26 connects the cover plate 24 and the base 25 when the cover plate 24 is open. In this embodiment, one end of the elastic connecting strap 26 is provided with an elastic buckle 27, and the other end is provided with a collar 29. The cover plate 24 is provided with a connecting hole 28 for the elastic buckle 27 to be engaged. The outer wall of the base 25 is provided with a T-shaped connecting post 30 that engages with the collar 29.
[0029] The automotive fuse box provided by this utility model includes a box body 1, a cover assembly 2, and a bellows 3. The cover assembly 2 is detachably installed on the box body 1. The inner wall of the cover assembly 2 has at least one first slot 6 formed for the corrugated protrusion 5 of the bellows 3 to engage, thereby enabling quick installation of the bellows. The bellows better protects the fuse box, effectively resisting continuous vibrations caused by engine vibration and road bumps, preventing relative displacement and friction at the connection between the wiring harness and the fuse, and reducing the risk of mechanical wear and loose contact. Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.
Claims
1. An automotive fuse box, characterized in that, It includes a housing (1) and a cover assembly (2) and a plurality of corrugated tubes (3) detachably mounted on one side of the housing (1). A fuse (4) is installed inside the housing (1). The corrugated tubes (3) are used for inserting wire harnesses. At least one first slot (6) is formed on the inner wall of the cover assembly (2) for the corrugated protrusions (5) of the corrugated tubes (3) to be inserted.
2. The automotive fuse box according to claim 1, characterized in that, The housing assembly (2) includes a first housing (7) and a second housing (8). The first housing (7) and the second housing (8) enclose a mounting cavity for installing the bellows (3). The first housing (7) and the second housing (8) are assembled by an elastic hook structure. The elastic hook structure includes a hook block (12) disposed on one of the first housing (7) and the second housing (8), and an elastic hook (11) disposed on the other and hooked to the hook block (12).
3. The automotive fuse box according to claim 2, characterized in that, The elastic hook structure is located on both sides of the bellows (3).
4. The automotive fuse box according to any one of claims 1-3, characterized in that, The outer wall of the box (1) is formed with an outwardly extending wire harness mounting tube (13), and a locking block (14) is formed at the end of the wire harness mounting tube (13) away from the box (1). The cover assembly (2) is formed with a second slot (15) on the side near the box (1) for the locking block (14) to be inserted.
5. The automotive fuse box according to claim 4, characterized in that, Both the first card slot (6) and the second card slot (15) are annular card slots.
6. The automotive fuse box according to claim 4, characterized in that, A sealing sleeve (19) is installed at the wire harness mounting tube (13). The sealing sleeve (19) has a retaining ring (20) extending out of the wire harness mounting tube (13). A first step (21) is formed on the inner wall of the box body (1) and abuts against the side of the retaining ring (20) away from the wire harness mounting tube (13).
7. The automotive fuse box according to claim 6, characterized in that, The retaining ring (20) is formed with a mounting groove (22) for inserting the end of the bellows (3), and the bottom of the mounting groove (22) is a second step (23) that abuts against the end of the bellows (3).
8. The automotive fuse box according to claim 1, characterized in that, The box body (1) includes a cover plate (24), a base (25) and an elastic connecting strap (26), the elastic connecting strap (26) being used to connect the cover plate (24) and the base (25) when the cover plate (24) is opened.
9. The automotive fuse box according to claim 8, characterized in that, One end of the elastic connecting strip (26) is provided with an elastic buckle (27), and the other end is provided with a collar (29). The cover plate (24) is provided with a connecting hole (28) for the elastic buckle (27) to be inserted. The outer wall of the base (25) is provided with a T-shaped connecting post (30) that is sleeved with the collar (29).