Fuse box device of integrated vibration reduction mounting structure for engine

Abstract

The invention provides a fuse box device of an integrated vibration reduction mounting structure for an engine, and belongs to the technical field of automobile electrical components. The device comprises a fuse box shell assembly formed by mutually plugging a first shell, a second shell and a third shell, and an integrated mounting bracket structure comprising a connecting seat, a positioning rib and two inclined right-angle positioning columns. By directly and integrally forming the mounting bracket and the bottom of the shell and adopting an oblique positioning design, the defects of multiple connecting interfaces, easiness in loosening and indirect vibration reduction path in the traditional split mounting are overcome, and the efficient transmission and dissipation of vibration energy to the whole shell are realized; and the installation rigidity and the long-term working reliability of the fuse box in an engine vibration environment are obviously improved.

Description

Technical Field

[0001] This invention relates to the field of automotive electrical components technology, and more specifically to a fuse box device with an integrated vibration damping mounting structure for an engine. Background Technology

[0002] In automotive electrical systems, fuse boxes are critical circuit protection components, and their reliability and durability are paramount, especially in the harsh vibration environment of the engine compartment. Existing technologies have proposed various solutions to address the integration and installation stability issues of fuse boxes. For example, patent document CN218101158U discloses an integrated fuse box housing that integrates internal electrical components by embedding conductive metal parts in injection molding. While this structure improves the reliability of internal connections, its focus is on the integration within the housing and does not address specific vibration-resistant installation solutions for the continuous, multi-directional vibration environment unique to the engine compartment. This leaves it vulnerable to the risk of loosening due to vibration in practical applications. On the other hand, as shown in patent documents CN220701055U and CN219029114U, existing solutions often employ methods such as adding independent vibration-damping brackets to the outside of a general-purpose fuse box or separately installing vibration-damping bases on the engine to achieve vibration reduction. This type of "discrete" design has obvious shortcomings: First, the additional connection links (such as the bolted connections between the fuse box and the bracket, and between the bracket and the engine) not only increase the complexity of assembly and the number of parts, but also introduce multiple potential loosening points and vibration transmission paths; Second, the universal fuse box and the retrofitted vibration damping structure usually lack an integrated mechanical coupling design, making it difficult to form an efficient energy dissipation whole, resulting in limited vibration damping efficiency and making it impossible to achieve long-term stable installation in the compact engine compartment space.

[0003] In summary, current technologies suffer from a clear disconnect: the fuse box housing, which focuses on internal integration, lacks a targeted vibration damping structure, while external vibration damping solutions are loosely integrated with the fuse box body and inefficient. Therefore, there is an urgent need in this field for an innovative technical solution that can fundamentally integrate the advantages of high-density electrical integration of the fuse box with the high-efficiency vibration damping requirements of the engine mounting point, overcoming the structural redundancy, weak connections, and insufficient vibration damping defects of existing split designs, thereby improving the overall rigidity and vibration resistance of the fuse box within the engine compartment from the source. Summary of the Invention

[0004] This invention proposes a fuse box device with an integrated vibration damping mounting structure for engines, which solves the technical defects of the prior art where the mounting structure of the fuse box in the engine compartment is separated from its housing body, resulting in insufficient connection stiffness, easy loosening, and low vibration damping efficiency under continuous vibration environment.

[0005] The technical solution of this invention is implemented as follows:

[0006] A fuse box device with an integrated vibration damping mounting structure for an engine, comprising:

[0007] A fuse box housing assembly, wherein the fuse box housing assembly is composed of a first housing, a second housing, and a third housing that are interlocked and fitted together.

[0008] The mounting bracket structure includes a connecting seat integrally formed with the bottom of the second housing, a positioning rib fixed to the bottom of the connecting seat, and two right-angle positioning posts symmetrically arranged on both sides of the positioning rib. The right-angle positioning posts have positioning holes at their right-angle ends, and the two right-angle positioning posts are obliquely arranged relative to the positioning rib.

[0009] Furthermore, the second shell is a hollow frame with open front and rear sides; both the first shell and the third shell are structures with one side closed and the other side open; the open side of the first shell is inserted into one open end of the second shell, and the open side of the third shell is inserted into the other open end of the second shell.

[0010] Furthermore, at least one safety pin is integrally formed in the internal cavity of the second housing.

[0011] Furthermore, an annular blind ring is protruding from the periphery of the first housing, and the inner wall of the blind ring and the side of the first housing form an annular slot, into which the open end of the corresponding side of the second housing is inserted.

[0012] Furthermore, the blind ring is provided with at least one elastically deformable first buckle, and the corresponding side wall of the second housing is provided with a first locking block that engages with the first buckle.

[0013] Furthermore, an annular positioning retaining ring is provided on the inner wall of the second housing near the insertion point with the third housing, for radially limiting the insertion of the third housing.

[0014] Furthermore, the second housing and the third housing are respectively provided with a semi-circular ring one and a semi-circular ring two on their opposite side walls; when the third housing is inserted into the predetermined position, the semi-circular ring one and the semi-circular ring two together form a complete circular channel for the wire harness to pass through.

[0015] Furthermore, the end of the first semicircular ring is provided with a third locking block, and the end of the second semicircular ring is provided with a third buckle that engages with the third locking block.

[0016] Furthermore, the bottom of the connecting seat is fixedly connected to the top of the positioning rib by screws; the vertical section of the right-angle positioning post is fixedly connected to the side of the positioning rib, and the end of its horizontal section is provided with the positioning hole.

[0017] Furthermore, the two right-angle positioning posts are staggered relative to the positioning ribs.

[0018] The beneficial effects of the technical solution provided in this application are as follows:

[0019] 1. This application integrates the fuse box housing assembly, which forms a closed enclosure, with the mounting bracket structure including angled positioning posts. This integrated design eliminates redundant connection interfaces between the fuse box and the independent vibration damping bracket. This allows the vibration energy transmitted from the engine to the mounting point to be more directly and efficiently channeled through the angled right-angle positioning posts into the rigid force transmission path formed by the connecting seat and positioning ribs, ultimately dissipated and resisted by the fuse box housing assembly as a whole. This integrated concept of "shell as load-bearing structure" not only significantly reduces the potential risk of loosening caused by multi-level bolt connections but also achieves a substantial improvement in installation rigidity and vibration resistance within a compact space.

[0020] 2. In this application, the integral molding of the fuse and the second housing eliminates the additional connecting parts and space required for traditional independent installation of the fuse, achieving ultimate reliability of the electrical connection under vibration and a highly compact structure. Secondly, the multiple housings achieve precise insertion and locking through the cooperation of slots, positioning retaining rings, and the first latch and the first locking block, making the overall assembly process simple, accurate, and secure, facilitating production and maintenance. Furthermore, the circular wire harness channel formed by the first and second semicircular rings in conjunction with the third locking block and the latch provides a reliable and sealable fixed outlet for the wire harness, effectively preventing wear and tear due to vibration and the intrusion of moisture and dust. These subordinate features work together to give the device of this invention not only excellent macroscopic vibration resistance but also, at the microscopic level, robust integration of internal electrical components, convenient modular assembly, and good external environmental sealing protection. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the safe box of the present invention;

[0023] Figure 2 This is a cross-sectional view of the present invention;

[0024] Figure 3 This is a partially enlarged schematic diagram of the present invention.

[0025] In the diagram: 1. Positioning rib, 2. Right-angle positioning post, 3. Safety box, 4. Second housing, 5. First housing, 6. Third housing, 7. Blind ring, 8. First locking block, 9. First buckle, 10. Positioning retaining ring, 11. Safety plate, 12. Connecting seat, 13. Semicircular ring one, 14. Semicircular ring two, 15. Third locking block, 16. Third buckle. Detailed Implementation

[0026] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0027] This invention provides a fuse box device with an integrated vibration damping mounting structure for engines. Its core design concept is to integrate the fuse box's accommodating function structure with the vibration-damping mounting structure, thereby fundamentally improving the installation rigidity and long-term reliability under engine vibration conditions.

[0028] Please see the appendix Figure 1-3 The fuse box assembly consists of two main parts: a fuse box housing assembly for housing electrical components and a mounting bracket structure that is fixed to the engine body and has a vibration damping design. These two parts are not simply superimposed, but are integrated through integral molding and mechanical connection to form a mechanically synergistic whole.

[0029] The fuse box housing assembly is the main structure of the device, which is composed of a first housing 5, a second housing 4, and a third housing 6 assembled by plugging them together. Specifically, the second housing 4 is a hollow rectangular frame that is open on both sides in the front-back direction. The first housing 5 and the third housing 6 are designed with a similar "cup-shaped" structure, that is, one side is a closed end plate and the other side is an open interface.

[0030] During assembly, the open side of the first housing 5 is inserted axially into the open end of one side of the second housing 4, while the open side of the third housing 6 is inserted from the opposite direction into the open end of the other side of the second housing 4. When all three are fully inserted, the closed end plates of the first housing 5 and the third housing 6, together with the second housing 4, form an internally sealed cavity, which is used to house electrical components such as fuses.

[0031] To optimize internal integration and connection reliability, this embodiment integrates at least one fuse 12 directly into the internal cavity of the second housing 4 via an injection molding process. This approach completely eliminates the need for subsequent installation and electrical connection of the fuse 12 as a separate component, making it an integral part of the housing structure and achieving extremely high structural compactness and electrical connection stability under vibration conditions.

[0032] To ensure the accuracy and strength of the connection between the first housing 5 and the second housing 4, a ring-shaped blind ring 7 is protruding around the open port of the first housing 5. The inner wall of this blind ring 7 forms a U-shaped annular slot with the side wall of the first housing 5. The corresponding end frame of the second housing 4 can be tightly inserted into this slot, achieving initial positioning and radial restraint.

[0033] Furthermore, to securely lock the inserted housing, at least one elastically deformable first latch 9 is provided on the wall of the blind ring 7. Correspondingly, a first locking block 8 corresponding to the position of the first latch 9 is formed on the side wall of the insertion end of the second housing 4. When the second housing 4 is inserted into place, the first latch 9 will click into the lower part of the first locking block 8, forming a reliable mechanical lock to prevent the housing from loosening during vibration.

[0034] For the connection between the third housing 6 and the second housing 4, this embodiment adopts a similar plug-in concept, but the positioning method is slightly different. On the inner wall of the second housing 4, near the port where it mates with the third housing 6, there is an annular positioning retaining ring 11. When the third housing 6 is inserted, its outer wall contacts the inner wall of the positioning retaining ring 11, thereby achieving precise radial positioning and ensuring assembly alignment.

[0035] Considering that the wire harness needs to be introduced into the fuse box, this invention features a cleverly designed mating structure on the second housing 4 and the third housing 6. A semicircular ring 13 is provided on the side wall of the second housing 4. A corresponding semicircular ring 14 is provided on the third housing 6. When the third housing 6 is fully inserted into the second housing 4, the semicircular rings 13 and 14 align perfectly, forming a complete circular wire harness channel for the wire harness to pass through neatly.

[0036] To ensure a tight seal of the housing while providing a passageway, a third locking block 15 is provided at the free end of semicircular ring 13, and a matching third latch 16 is provided at the free end of semicircular ring 14. When the two semicircular rings are closed, the third locking block 15 and the third latch 16 engage with each other, thereby closing and locking the wire harness passageway, which can both fix the wire harness and provide a certain degree of dust and water protection.

[0037] Another core aspect of this invention lies in the mounting bracket structure. This structure is not an external, independent part, but rather deeply integrated with the fuse box housing, particularly the second housing 4. Specifically, a protruding connecting seat 12 is integrally injection molded on the bottom outer wall of the second housing 4. This connecting seat 12 serves as the main load-bearing connection base between the entire device and the engine mounting surface.

[0038] The next part of the mounting bracket is the positioning rib 1, which is a metal or high-strength plastic plate that acts as a reinforcing rib. The positioning rib 1 is firmly fixed to the bottom plane of the connecting seat 12 with screws, thereby extending and reinforcing the load-bearing surface of the connecting seat 12 downwards.

[0039] The most critical vibration damping and mounting components are the two right-angle positioning posts 2. These two right-angle positioning posts 2 are symmetrically fixed to both sides of the positioning rib 1 with their vertical sections. Their horizontal sections extend outward and slightly upward, forming cantilever beam-like support legs. At the end of the horizontal section of each right-angle positioning post 2, a positioning hole is machined for inserting bolts to finally fasten the entire device to the preset mounting point on the engine body.

[0040] A key ingenious aspect of the vibration reduction design of this invention lies in the arrangement of the two right-angle positioning posts 2. They are not perpendicular or parallel to the length of the positioning rib 1, but rather angled at an acute angle. This angled arrangement allows vibration impacts from different directions of the engine to be effectively decomposed into forces in multiple directions when transmitted to the right-angle positioning posts 2. These forces are then distributed throughout the entire fuse box housing assembly via the positioning rib 1 and connecting seat 12, avoiding stress concentration and significantly reducing the risk of local resonance and fatigue failure. This achieves the beneficial effect of "eliminating vibration through structural design."

[0041] The specific embodiments of this invention demonstrate an integrated, structurally robust, and vibration-resistant fuse box device. From the integrated internal electrical components to the precise plug-in and snap-locking between housings, and the dedicated mounting bracket integrally formed with the housing and featuring angled positioning posts, each technical feature complements the others, collectively achieving the invention's objective of improving the environmental adaptability and operational reliability of electrical components within the engine compartment.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fuse box device with an integrated vibration damping mounting structure for an engine, characterized in that, include The safe box housing assembly is composed of a first housing (5), a second housing (4) and a third housing (6) that are interlocked and fitted together. The mounting bracket structure includes a connecting seat (12) integrally formed with the bottom of the second housing (4), a positioning rib (1) fixed to the bottom of the connecting seat (12), and two right-angle positioning posts (2) symmetrically arranged on both sides of the positioning rib (1). The right-angle positioning posts (2) have positioning holes at their right-angle ends, and the two right-angle positioning posts (2) are obliquely arranged relative to the positioning rib (1).

2. The fuse box device with an integrated vibration damping mounting structure for an engine as described in claim 1, characterized in that, The second shell (4) is a hollow frame with open front and rear sides; the first shell (5) and the third shell (6) are both structures with one side closed and the other side open; the open side of the first shell (5) is inserted into the open end of one side of the second shell (4), and the open side of the third shell (6) is inserted into the open end of the other side of the second shell (4).

3. The fuse box device with an integrated vibration damping mounting structure for engines as described in claim 2, characterized in that, At least one safety pin (12) is integrally formed in the internal cavity of the second housing (4).

4. The fuse box device with an integrated vibration damping mounting structure for an engine as described in claim 2, characterized in that, The outer periphery of the first housing (5) is provided with an annular blind ring (7), and the inner wall of the blind ring (7) and the side of the first housing (5) form an annular slot. The open end of the corresponding side of the second housing (4) is inserted into the slot.

5. The fuse box device with an integrated vibration damping mounting structure for an engine as described in claim 4, characterized in that, The blind ring (7) is provided with at least one elastically deformable first buckle (9), and the corresponding side wall of the second housing (4) is provided with a first buckle (8) that engages with the first buckle (9).

6. The fuse box device with an integrated vibration damping mounting structure for an engine as described in claim 2, characterized in that, The inner wall of the second housing (4) is provided with an annular positioning retainer (11) near the insertion point of the second housing (4) and the third housing (6) for radially limiting the insertion of the third housing (6).

7. The fuse box device for an engine with an integrated vibration damping mounting structure as described in claim 2, characterized in that, The second housing (4) and the third housing (6) are respectively provided with a semi-circular ring one (13) and a semi-circular ring two (14) on their side walls opposite to the third housing (6); when the third housing (6) is inserted into the predetermined position, the semi-circular ring one (13) and the semi-circular ring two (14) together form a full circular channel for the wire harness to pass through.

8. The fuse box device for an engine with an integrated vibration damping mounting structure as described in claim 7, characterized in that, The end of the first semicircular ring (13) is provided with a third locking block (15), and the end of the second semicircular ring (14) is provided with a third buckle (16) that engages with the third locking block (15).

9. The fuse box device for an engine with an integrated vibration damping mounting structure as described in claim 1, characterized in that, The bottom of the connecting seat (12) is fixedly connected to the top of the positioning rib (1) by screws; the vertical section of the right-angle positioning post (2) is fixedly connected to the side of the positioning rib (1), and the end of its horizontal section is provided with the positioning hole.

10. The fuse box device with an integrated vibration damping mounting structure for an engine as described in claim 1, characterized in that, The two right-angle positioning posts (2) are staggered relative to the positioning ribs (1).

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