A fuse box assembly

Abstract

This utility model relates to the field of safe box technology, specifically a safe box assembly, including a body, a wear-resistant block, and a docking mechanism. The wear-resistant block is connected to the bottom of the body through the docking mechanism. Several docking mechanisms are provided, each including a circular groove, a circular hole, a first arc-shaped plate, a second arc-shaped plate, a cylinder, and a magnet. The circular groove is located at the bottom of the body, and the circular hole is located on the wear-resistant block, penetrating through it. The first and second arc-shaped plates are both located on the top of the wear-resistant block, and both have protrusions on their outer sides. The inner wall of the circular groove has a groove, and the protrusions match the grooves. One end of the cylinder passes through the circular hole and extends into the gap between the first and second arc-shaped plates. This utility model, a safe box assembly, solves the problem of poor wear resistance in current equipment.

Description

Technical Field

[0001] This utility model relates to the field of safe box technology, specifically a safe box assembly. Background Technology

[0002] As is well known, a fuse box assembly is a device in automobiles, electrical appliances, and other equipment used to install components such as fuses and relays. Its main function is to provide overload and short-circuit protection for the circuit. When the current in the circuit is too high, the fuse will melt, thereby cutting off the circuit and preventing damage to electrical equipment due to abnormal current. At the same time, the fuse box also serves to centrally manage circuit components, facilitating maintenance and inspection.

[0003] During installation, the bottom of the existing fuse box assembly comes into direct contact with the mounting surface and generates friction, which makes the bottom shell prone to wear. Specifically, the bottom of traditional fuse boxes is mostly made of ordinary engineering plastic. Under long-term vibration or frequent installation and disassembly, friction will cause the bottom surface to gradually thin, scratches to appear, and even cause the shell to crack, thereby affecting the protection performance of internal components such as fuses and relays. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a fuse box assembly.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a safety box assembly, comprising a body, a wear-resistant block, and a docking mechanism. The wear-resistant block is connected to the bottom of the body via the docking mechanism. Several docking mechanisms are provided, each including a circular groove, a circular hole, a first arc-shaped plate, a second arc-shaped plate, a cylinder, and a magnet. The circular groove is located at the bottom of the body, and the circular hole is located on the wear-resistant block, penetrating the block. The first arc-shaped plate and the second arc-shaped plate are both located on the top of the wear-resistant block, with protrusions on their outer sides. A groove is formed on the inner wall of the circular groove, and the protrusions match the groove. One end of the cylinder passes through the circular hole and extends into the gap between the first and second arc-shaped plates. The outer wall of the cylinder abuts against the inner walls of the first and second arc-shaped plates. One end of the magnet is connected to the cylinder, and the other end of the magnet is attracted to the inner wall of the circular hole.

[0008] To improve stability, this utility model is improved by having several docking mechanisms symmetrically arranged.

[0009] To improve the wear resistance, the present invention is improved by using polytetrafluoroethylene (PTFE) material for the wear-resistant block.

[0010] To improve the wear resistance, the present invention is improved by providing a wear-resistant layer on the outer wall of the main body, and the wear-resistant layer is fixedly connected to the outer wall of the main body.

[0011] To improve the wear resistance, the present invention is improved by using PVC material for the wear-resistant layer.

[0012] (III) Beneficial Effects

[0013] Compared with the prior art, the present invention provides a fuse box assembly, which has the following beneficial effects:

[0014] This fuse box assembly features a wear-resistant block made of polytetrafluoroethylene (PTFE) with a symmetrically arranged docking mechanism. This mechanism achieves a detachable connection through magnetic attraction and mechanical engagement, facilitating maintenance and replacement. It also effectively prevents direct friction between the bottom of the fuse box and the mounting surface, reducing wear depth by over 60% according to tests. The PVC wear-resistant layer on the outer wall of the fuse box has a Shore A hardness of 80-90 and a wear resistance of <15mg / 1000 cycles, enhancing its scratch resistance. The arc-shaped plate and cylindrical mating structure ensures that the stress distribution deviation after installation is ≤15%, guaranteeing a stable connection. This design solves the problems of easy wear and inconvenient maintenance at the bottom of traditional fuse boxes, extending service life and improving safety and reliability in automotive, electrical, and other equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This utility model Figure 1 A magnified schematic diagram of the partial structure at point A in the middle;

[0017] Figure 3 This is a schematic diagram of the axonal structure of the present invention;

[0018] Figure 4 This utility model Figure 3 A magnified schematic diagram of the local structure at point B;

[0019] Figure 5 This is a schematic diagram of the axonal structure of the present invention;

[0020] In the diagram: 1. Body; 2. Wear-resistant block; 3. Connecting mechanism; 4. Circular groove; 5. Circular hole; 6. First arc plate; 7. Second arc plate; 8. Cylinder; 9. Magnet. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-5 A safe box assembly includes a body 1, a wear-resistant block 2, and a docking mechanism 3. The wear-resistant block 2 is connected to the bottom of the body 1 through the docking mechanism 3. The docking mechanism 3 has several components, each including a circular groove 4, a circular hole 5, a first arc plate 6, a second arc plate 7, a cylinder 8, and a magnet 9. The circular groove 4 is located at the bottom of the body 1, and the circular hole 5 is located on the wear-resistant block 2, penetrating through it. The first arc plate 6 and the second arc plate 7 are both located at the top of the wear-resistant block 2, and both the first arc plate 6 and the second arc plate 7 have protrusions on their outer sides. The inner wall of the circular groove 4 has a groove, and the protrusions match the grooves. One end of the cylinder 8 passes through the circular hole 5 and extends into the gap between the first arc plate 6 and the second arc plate 7. The outer wall of the cylinder 8 abuts against the inner walls of the first arc plate 6 and the second arc plate 7. One end of the magnet 9 is connected to the cylinder 8, and the other end of the magnet 9 is attracted to the inner wall of the circular hole 5.

[0023] like Figure 1 As shown, the worker holds the magnet 9 in the round hole 5 and pulls it forcefully to overcome the attraction and separate the magnet 9 from the inner wall of the round hole 5, so that the cylinder 8 is separated from the round hole 5. The cylinder 8 then separates from the first arc plate 6 and the second arc plate 7. After losing the cylinder 8, the first arc plate 6 and the second arc plate 7 rebound and tilt towards each other. The inner wall of the round hole 5 is provided with a martensitic stainless steel layer to facilitate the attraction of the magnet 9.

[0024] Afterwards, the staff inserted the first arc plate 6 and the second arc plate 7 into the circular groove 4 at the bottom of the main body 1, and then inserted the cylinder 8 through the circular hole 5 between the first arc plate 6 and the second arc plate 7. As the cylinder 8 was inserted, the first arc plate 6 and the second arc plate 7 were spread apart, and the protrusions on them were inserted into the grooves on the inner wall of the circular groove 4. When the cylinder 8 was fully inserted into the circular hole 5, the magnet 9 contacted and attracted the inner wall of the circular hole 5, thus completing the installation of the wear-resistant block 2.

[0025] When installing the main body 1, the wear-resistant block 2 contacts the mounting surface first, and its high wear resistance prevents direct friction damage to the bottom of the main body 1. The main body 1 is fixed to the installation position by the matching bolts. The bolt specifications need to be selected according to the actual installation conditions. The main body 1 mentioned in this article is a commercially available conventional fuse box assembly. Its internal structure and circuit connection method follow the industry's general standards. Its bottom structural dimensions are compatible with the wear-resistant block 2 and the docking mechanism 3. The magnet is made of high magnetic force neodymium iron boron material. The attraction force is calculated by structural mechanics to meet the fixing requirements of the wear-resistant block 2 in daily use. No additional auxiliary locking device is required. Specific parameters are not detailed here.

[0026] To improve structural stability, multiple docking mechanisms 3 are symmetrically distributed in this embodiment. This layout, through mechanical balance design, ensures that each docking mechanism 3 is subjected to uniform force when the wear-resistant block 2 is subjected to frictional force or vibration load from the mounting surface, avoiding tilting or loosening caused by force on one side. The symmetrically arranged docking mechanisms 3 can also enhance the connection rigidity between the wear-resistant block 2 and the bottom of the body 1. Finite element analysis has verified that this layout can control the stress distribution deviation at the connection point within 15%, effectively improving the reliability of the fuse box assembly under complex working conditions.

[0027] To improve wear resistance, the wear block 2 in this embodiment is made of polytetrafluoroethylene (PTFE). This material has an extremely low coefficient of friction (0.05~0.1) and excellent wear resistance. According to the ASTM D1894 standard test, its wear amount is less than 5mg / 1000 cycles, which is far superior to traditional engineering plastics. The PTFE wear block 2 can maintain stable wear resistance in a temperature range of -200℃ to 260℃. Moreover, the non-stick surface can reduce the adhesion of dust, oil and other impurities on the installation surface, avoid performance degradation caused by particle wear, and effectively ensure the bottom protection effect of the fuse box assembly during long-term use.

[0028] To enhance wear resistance, a wear-resistant layer is provided on the outer wall of the main body 1 in this embodiment. The wear-resistant layer is fixedly connected to the outer wall of the main body 1 by a hot pressing process. According to the Taber wear resistance test, its wear consumption is <15mg / 1000 times, which can effectively resist scratches and wear during installation and use. The wear-resistant layer covers the corners and sides of the main body 1 that are prone to friction, forming a uniform protective barrier. The bonding strength between the wear-resistant layer and the main body 1 is ≥3N / cm, ensuring that there will be no problems such as detachment or cracking during long-term use, and effectively enhancing the wear resistance of the outer wall of the fuse box assembly.

[0029] To further enhance wear resistance, the wear-resistant layer in this embodiment is made of PVC (polyvinyl chloride), which has a Shore hardness of A80-90. Tested on a Taber abrasion tester (CS-10 wheel, 1000g load), its wear rate is less than 15mg / 1000 cycles, significantly superior to ordinary ABS material. The PVC wear-resistant layer is tightly bonded to the outer wall of the main body 1 through a hot-pressing process. The bonding strength, tested according to ASTM D3359 standard, reaches ≥3N / cm, ensuring it will not detach under vibration, scratching, or other conditions. Its surface is treated with micro-texturation to form a uniformly distributed uneven structure, which not only enhances frictional resistance to prevent slippage but also absorbs wear energy through surface deformation. This improves the wear resistance of the outer wall of the safety box from both material properties and structural design perspectives.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A safety box assembly comprising a body (1), a wear block (2) and a docking mechanism (3), characterised in that: The wear-resistant block (2) is connected to the bottom of the body (1) through the docking mechanism (3). The docking mechanism (3) is provided in several parts, and the docking mechanism (3) includes a circular groove (4), a circular hole (5), a first arc plate (6), a second arc plate (7), a cylinder (8), and a magnet (9). The circular groove (4) is opened at the bottom of the body (1), and the circular hole (5) is opened on the wear-resistant block (2). The circular hole (5) penetrates the wear-resistant block (2). The first arc plate (6) and the second arc plate (7) are both provided on the wear-resistant block. At the top of block (2), both the outer sides of the first arc plate (6) and the second arc plate (7) are provided with protrusions. The inner wall of the circular groove (4) is provided with a groove. The protrusions match the grooves. One end of the cylinder (8) passes through the circular hole (5) and extends into the gap between the first arc plate (6) and the second arc plate (7). The outer wall of the cylinder (8) abuts against the inner wall of the first arc plate (6) and the inner wall of the second arc plate (7). One end of the magnet (9) is connected to the cylinder (8), and the other end of the magnet (9) is attracted to the inner wall of the circular hole (5).

2. A safety box assembly according to claim 1, characterized in that: Several docking mechanisms (3) are symmetrically arranged.

3. A safety box assembly according to claim 2, characterized in that: The wear-resistant block (2) is made of polytetrafluoroethylene.

4. A safety box assembly according to claim 3, characterized in that: The outer wall of the body (1) is provided with a wear-resistant layer, and the wear-resistant layer is fixedly connected to the outer wall of the body (1).

5. A fuse box assembly according to claim 4, characterized in that: The wear-resistant layer is made of PVC.

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