A bracket for fuse block cable routing

CN224610315UActive Publication Date: 2026-08-07NANJING PUZHEN TECH IND CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NANJING PUZHEN TECH IND CO LTD
Filing Date
2025-08-07
Publication Date
2026-08-07

AI Technical Summary

Technical Problem

为满足紧凑空间的电气间隙要求,箱体出线口普遍采用非金属格兰头,但非金属格兰头对线缆的径向约束力较弱,难以确保线缆与密封件之间的紧密结合,易产生密封间隙,该间隙将直接导致箱体防尘、防水等密封性能下降

Benefits of technology

[0013] This invention employs a design that combines cable brackets and cable clamps to guide cables through smooth bends, preventing sharp turns at non-metallic cable glands. This reduces stress concentration caused by excessive bending, extending cable lifespan and eliminating gaps between the cable and glands due to sharp turns, thus improving the enclosure's sealing. Furthermore, the elongated hole design on the cable bracket allows for multi-directional adjustment, accommodating different cable specifications and exit positions, effectively enhancing versatility.

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Abstract

The utility model relates to a kind of support for the cable direction of fuse box, to solve the problem of cable outlet direction disorder, poor sealing and unstable fixation in prior art. The support includes cable support, fastening assembly and cable clamp. The cable clamp is composed of two symmetrical block-shaped clamping bodies, each block-shaped clamping body is provided with two independent semicircular clamping grooves, and forms a complete circular clamping hole after closing, for clamping the cable. The cable support is provided with a long waist type hole, and the cable clamp is locked on the cable support by the fastening assembly, guiding the cable to turn gently, avoiding sharp turns, reducing stress concentration, improving the service life of the cable, and enhancing the sealing of the box. Rectangular gasket is arranged between the cable clamp and the fastening assembly to prevent local deformation. The utility model has the advantages of simple structure, easy installation, high universality and high reliability, effectively improving the overall performance of the fuse box.
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Description

Technical Field

[0001] This utility model relates to the technical field of fuse box cable installation structure, specifically a mechanical support structure for optimizing the routing of outgoing cables from fuse boxes. Background Technology

[0002] In existing fuse boxes, the routing of cables after exiting the box lacks effective constraint and optimization, typically resulting in free hanging. To meet electrical clearance requirements within compact spaces, non-metallic glands are commonly used at the cable exit points. However, these glands offer weak radial constraint on the cables, making it difficult to ensure a tight seal between the cables and the seals, easily leading to sealing gaps. These gaps directly reduce the box's dustproof and waterproof sealing performance. Furthermore, the lack of support at the cable exit points makes sharp bends with excessively small radii easy to occur, causing stress concentration at the non-metallic glands, accelerating insulation wear and shortening service life. In addition, existing cable fixing devices cannot accommodate different wire diameters and multi-directional cable exit positions. Therefore, there is an urgent need for a dedicated cable guide bracket for fuse boxes to simultaneously address the problems of sealing failure, cable bending damage, and insufficient installation compatibility. Utility Model Content

[0003] To solve the above problems, the present invention adopts the following technical solution:

[0004] A support for cable routing in a fuse box includes a cable support, a fastening assembly, and a cable clamp. The cable clamp is formed by two symmetrical block-shaped clamping bodies that fit together. Each block-shaped clamping body has two independent semi-circular clamping grooves at corresponding positions, forming two complete circular clamping holes after fitting together for clamping the cable. The mating area of ​​the block-shaped clamping bodies has several through mounting holes for connecting to the cable support. The cable support has several elongated holes, and the fastening assembly passes through the mounting holes and elongated holes of the block-shaped clamping bodies to lock the cable clamp onto the cable support, achieving stable clamping and guidance of the cable.

[0005] Furthermore, the elongated slot includes a longitudinal elongated slot connected to the fuse box, which can adapt to installation requirements of different heights and positions; it also includes an elongated slot parallel to the cable direction connected to the cable clamp, which can flexibly adjust the position of the cable clamp to adapt to cables of different lengths and directions, thereby improving the versatility and adaptability of the bracket.

[0006] Furthermore, to enhance the stability of the connection and distribute pressure, the bracket also includes a rectangular gasket disposed between the cable clamp and the fastening assembly, the rectangular gasket having a through hole corresponding to the mounting hole of the block clamp body.

[0007] Furthermore, the cable bracket is a carbon steel bent piece with longitudinal reinforcing ribs welded at the bend. This design not only improves the structural strength of the bracket but also enhances its load-bearing capacity.

[0008] Furthermore, the cable clamp is made of plastic material with hollow reinforcing ribs. The hollow reinforcing ribs design reduces weight while ensuring the structural strength and toughness of the cable clamp, enabling it to effectively clamp cables without easily being damaged.

[0009] Furthermore, the rectangular gasket is made of carbon steel, which has high strength and durability, and can stably perform its gasket function for a long time.

[0010] Furthermore, the inner wall of the semi-circular clamping groove is provided with axial anti-slip texture, which effectively prevents the cable from slipping during the clamping process and ensures the stability and reliability of the cable.

[0011] Furthermore, the fastening assembly includes a bolt passing through the rectangular washer, the mounting hole of the block clamping body, and the elongated hole, a self-locking nut that mates with the bolt, and an anti-loosening washer fitted on the bolt. The anti-loosening washer assembly further enhances the stability of the connection and prevents the bolt from loosening due to equipment vibration or other external forces, thereby ensuring the long-term stable operation of the entire support assembly.

[0012] This utility model has the following beneficial effects:

[0013] This invention employs a design that combines cable brackets and cable clamps to guide cables through smooth bends, preventing sharp turns at non-metallic cable glands. This reduces stress concentration caused by excessive bending, extending cable lifespan and eliminating gaps between the cable and glands due to sharp turns, thus improving the enclosure's sealing. Furthermore, the elongated hole design on the cable bracket allows for multi-directional adjustment, accommodating different cable specifications and exit positions, effectively enhancing versatility. Attached Figure Description

[0014] Figure 1 This is an exploded view of the bracket of this utility model;

[0015] Figure 2 This is a structural diagram of the cable support for the bracket of this utility model;

[0016] Figure 3 This is a structural diagram of the cable clamp block-shaped holding body of the bracket of this utility model;

[0017] Figure 4 This is a schematic diagram of the assembly of the bracket of this utility model;

[0018] Figure 5 This is a schematic diagram of the installation of the bracket of this utility model.

[0019] In the diagram: 1. Cable bracket; 11. Long waist-shaped hole; 12. Longitudinal reinforcing rib; 2. Fastening assembly; 21. Bolt; 22. Self-locking nut; 23. Anti-loosening washer; 3. Cable clamp; 31. Block-shaped clamping body; 32. Semi-circular clamping groove; 4. Rectangular washer. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] like Figures 1 to 5 As shown, the present invention provides a cable support for cable routing in a fuse box, comprising a cable support (1), a fastening assembly (2), and a cable clamp (3). The cable support (1) is a carbon steel bent piece with longitudinal reinforcing ribs (12) welded at the bend. The cable support (1) is provided with several elongated holes (11). The installation height of the cable support (1) can be adjusted along the length of the elongated holes (11) according to the actual installation position requirements of the fuse box, so as to achieve the most suitable position. Then, fasteners are used to fasten the cable support (1) to the fuse box through the elongated holes (11).

[0022] like Figure 1 As shown, in order to enhance the connection strength and stability between the cable clamp (3) and the fastening assembly (2), and to prevent excessive local pressure from causing deformation of the cable clamp (3), this utility model also includes a rectangular gasket (4). The rectangular gasket (4) is made of carbon steel and is disposed between the cable clamp (3) and the fastening assembly (2). It has a through hole corresponding to the mounting hole of the block clamping body (31). During installation, the rectangular gasket (4) is placed between the cable clamp (3) and the fastening assembly (2), and its through hole is aligned with the mounting hole on the block clamping body (31).

[0023] like Figure 1 As shown, the fastening assembly (2) includes a bolt (21), a self-locking nut (22), and a locking washer (23). During installation, the bolt (21) is passed sequentially through the rectangular washer (4), the mounting hole on the block clamp (31), and the elongated hole (11) on the cable bracket (1). Then, the locking washer (23) is fitted onto the bolt (21), and the self-locking nut (22) is screwed on. By tightening the self-locking nut (22), the cable clamp (3) is securely locked onto the cable bracket (1). The combined use of the locking washer (23) and the self-locking nut (22) can effectively prevent the bolt from loosening due to equipment vibration or other external forces, ensuring the long-term stable operation of the entire bracket assembly.

[0024] like Figure 2As shown, to accommodate different cable specifications, the cable bracket (1) is also provided with an elongated hole (11) parallel to the cable direction for fixed connection with the cable clamp (3). The position of the cable clamp (3) can be adjusted along the length of the elongated hole (11) parallel to the cable direction according to different cable specifications.

[0025] Combination Figure 3 As shown, the cable clamp (3) is composed of two symmetrical block-shaped clamping bodies (31) joined together. Each block-shaped clamping body (31) has two independent semi-circular clamping grooves (32) at corresponding positions. After being joined together, they form two complete circular clamping holes for clamping cables. The cable clamp (3) includes hollow reinforcing ribs and is made of non-metallic PA66 material. Several through mounting holes are provided at the joint of the block-shaped clamping bodies (31). When installing the cable clamp (3), the operator needs to place the cable in the semi-circular clamping groove (32). Since the inner wall of the semi-circular clamping groove (32) is provided with axial anti-slip texture, this can effectively prevent the cable from sliding during the clamping process and ensure the stability of the cable. Then, the two block-shaped clamping bodies (31) are joined together so that the cable is firmly clamped in the middle.

[0026] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements can be made without departing from the principle of the present utility model, and these improvements should also be considered within the protection scope of the present utility model.

Claims

1. A bracket for cable routing in a fuse box, comprising a cable bracket (1) and a fastening assembly (2), characterized in that: It also includes a cable clamp (3), which is composed of two symmetrical block clamping bodies (31) joined together. Each block clamping body (31) has two independent semi-circular clamping grooves (32) at corresponding positions. After being joined together, two complete circular clamping holes are formed. The joint of the block clamping body (31) is provided with several through mounting holes. The cable bracket (1) is provided with several elongated holes (11). The fastening component (2) passes through the mounting holes of the block clamping body (31) and the elongated holes (11) to lock the cable clamp (3) onto the cable bracket (1).

2. The bracket for cable routing in a fuse box according to claim 1, characterized in that: The elongated hole (11) includes a longitudinal elongated hole connected to the fuse box and an elongated hole parallel to the cable direction connected to the cable clamp (3).

3. The bracket for cable routing in a fuse box according to claim 1, characterized in that: It also includes a rectangular gasket (4) disposed between the cable clamp (3) and the fastening assembly (2), and the rectangular gasket (4) has a through hole corresponding to the mounting hole of the block clamp (31).

4. A bracket for cable routing in a fuse box according to claim 1, characterized in that: The cable bracket (1) is a carbon steel bent part, and longitudinal reinforcing ribs (12) are welded at the bend.

5. A bracket for cable routing in a fuse box according to claim 1, characterized in that: The cable clamp (3) includes hollow reinforcing ribs and is made of plastic.

6. A bracket for cable routing in a fuse box according to claim 3, characterized in that: The rectangular gasket (4) is made of carbon steel.

7. A bracket for cable routing in a fuse box according to claim 1, characterized in that: The inner wall of the semi-circular clamping groove (32) is provided with axial anti-slip texture.

8. A bracket for cable routing in a fuse box according to claim 3, characterized in that: The fastening assembly (2) includes a bolt (21) that passes through the rectangular washer (4), the mounting hole of the block clamp (31) and the elongated hole (11), a self-locking nut (22) that mates with the bolt (21), and an anti-loosening washer (23) fitted on the bolt (21).