Novel fuse box

By incorporating snap-fit ​​and waterproof components in the fuse box design, the problems of poor waterproofing performance and easy fuse detachment in the engine compartment fuse box are solved, achieving efficient waterproofing and vibration resistance, and improving vehicle safety.

CN223842863UActive Publication Date: 2026-01-27SUZHOU XIAOLIAN ELECTRIC CO LTD
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Patent Information

Application Number
CN202420730288.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-10
Publication Date
2026-01-27
Estimated Expiration
2034-04-10

AI Technical Summary

Technical Problem

The existing fuse box in the engine compartment is not waterproof, making it easy for water to enter and cause abnormal signals. In addition, the fuses are prone to coming loose during vehicle vibration, which can lead to unstable wiring and pose a safety hazard.

Method used

A fuse box comprising a main sheath, a lower cover, and an upper cover is designed. It employs a snap-fit ​​assembly and a waterproof assembly. The snap-fit ​​assembly secures the fuses with elastic buckles and limiting blocks, while the waterproof assembly achieves IPX9K and IPX7 waterproof ratings through a waterproof housing and a sealing ring, preventing water ingress and fuse loosening.

Benefits of technology

It achieves highly efficient waterproofing of the fuse box, preventing water from entering and fuses from detaching, ensuring stable wiring, and improving vehicle safety.

✦ Generated by Eureka AI based on patent content.

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    Figure CN223842863U_ABST
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Abstract

The utility model discloses a novel fuse box, which belongs to the technical field of electronic components and comprises a main body sheath, a lower cover and an upper cover, the lower cover is fixedly connected to the bottom end of the main body sheath, the upper cover is detachably connected to the top end of the main body sheath, a socket is detachably connected in the main body sheath, and a connecting jack is arranged on the socket. A buckling assembly and a waterproof assembly are arranged between the main body sheath and the upper cover, the buckling assembly is used for connecting the main body sheath and the upper cover and limiting and fixing the fuse, and the waterproof assembly is used for guaranteeing the sealing performance between the main body sheath and the upper cover and preventing water from entering the fuse box; according to the utility model, the upper cover is installed on the main body sheath through the buckling assembly, the upper cover protects the fuse inserted into the connecting jack on the socket, limits the fuse and prevents the fuse from loosening and falling off, and after the main body sheath and the upper cover are connected, the waterproof assembly guarantees the sealing performance after the upper cover and the main body sheath are connected. And effective water resistance can be realized.
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Description

Technical Field

[0001] This utility model relates to the field of electronic component technology, and more specifically, to a novel fuse box. Background Technology

[0002] A fuse box is a box (also called a fuse holder) for installing fuses. It facilitates fuse installation and some fuse boxes have features such as waterproofing, fireproofing, and high-temperature resistance (depending on the material and shape). Fuse boxes can be divided into lead-wire fuse boxes and automotive fuse boxes. Generally, cars have two fuse boxes: one located near the driver's seat inside the car, primarily responsible for the normal operation of in-car electrical systems such as the cigarette lighter, power seats, and airbags; and the other installed in the engine compartment, responsible for the safety of external electrical systems such as the ECU, headlights, windshield washer fluid, horn, and ABS circuits, all of which require fuse protection.

[0003] Currently, during vehicle engine compartment maintenance and cleaning, users often use water guns to wash the engine. However, the waterproof performance of existing engine compartment fuse boxes is generally not high, with a waterproof rating of basically IPX3-IPX5. Water used to wash the engine compartment can easily enter the fuse box, causing signal abnormalities and posing certain safety hazards. In addition, the fuse box usually consists of various components, among which the fuse is relatively small and has a certain distance from the top wall of the fuse box. During long-term vehicle driving, excessive vibrations often occur, which can cause the fuse to detach, resulting in unstable or interrupted circuit signals, which also poses a significant safety hazard to the vehicle. Utility Model Content

[0004] 1. Technical problems to be solved

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a novel fuse box. This novel fuse box addresses the issue that the waterproof performance of existing engine compartment fuse boxes is generally not high, with waterproof ratings typically ranging from IPX3 to IPX5. Water from washing the engine compartment can easily enter the fuse box, causing signal abnormalities and posing a safety hazard. Furthermore, the fuse box usually contains various components, with the fuse being relatively small and located some distance from the top wall of the box. During prolonged vehicle operation, excessive vibrations can cause the fuse to detach, leading to unstable or interrupted circuit signals, which also poses a significant safety hazard to the vehicle.

[0006] 2. Technical Solution

[0007] To solve the above problems, the present invention adopts the following technical solution:

[0008] A novel fuse box includes a main body cover, a lower cover, and a upper cover. The lower cover is fixedly connected to the bottom end of the main body cover, and the upper cover is detachably connected to the top end of the main body cover. A socket is detachably connected inside the main body cover, and the socket is provided with a connection port. A fastening component and a waterproof component are provided between the main body cover and the upper cover. The fastening component is used to connect the main body cover and the upper cover and to restrict and fix the fuse. The waterproof component is used to ensure the airtightness between the main body cover and the upper cover and to prevent water from entering the fuse box.

[0009] As a preferred embodiment of this utility model, the fastening assembly includes two elastic buckles, two limiting blocks, and multiple ribs. The two elastic buckles are respectively fixedly connected to the two sides of the upper cover, and the two limiting blocks are respectively fixedly connected to the two sides of the main body sleeve. The two elastic buckles and the two limiting blocks are engaged with each other. The multiple ribs are fixedly connected to the top wall of the upper cover, and the multiple ribs correspond to the connecting sockets.

[0010] As a preferred embodiment of this utility model, the waterproof component includes a waterproof sleeve and a sealing ring. The waterproof sleeve is fixedly connected to the top cover and corresponds to the top end of the main body cover. The sealing ring is fixedly connected inside the main body cover and corresponds to the bottom end of the top cover.

[0011] In a preferred embodiment of this utility model, the connection ports are configured in 12 groups, with each group containing two connection ports.

[0012] As a preferred embodiment of this utility model, the socket is provided with multiple sets of spare sockets, and each set of spare sockets has two sockets.

[0013] As a preferred embodiment of this utility model, an installation strip is fixedly connected to the outer surface of the main body sheath, and two installation holes are provided on the installation strip.

[0014] 3. Beneficial effects

[0015] Compared with existing technologies, the advantages of this utility model are:

[0016] 1) In this solution, the fuse is plugged into the socket through the connection port. The top cover is connected to the main body sheath through the fastening assembly to protect the fuse. At the same time, multiple protruding ribs in the fastening assembly restrict the fuse, making the fuse stable on the socket. This prevents the fuse from loosening or falling off due to vibration during vehicle operation, and prevents unstable or interrupted circuit signals from causing safety hazards to the vehicle.

[0017] 2) In this solution, after the top cover and the main body cover are connected by the fastening assembly, the top of the main body cover enters the waterproof housing in the waterproof assembly. The waterproof housing and the top of the main body cover form a barrier, which can achieve IPX9K waterproof rating. The bottom of the top cover will contact the sealing ring in the main body cover and squeeze the sealing ring to achieve IPX7 waterproof rating. Under the effect of dual waterproofing, water can be effectively prevented from entering the fuse box and causing signal abnormalities. Attached Figure Description

[0018] Figure 1 This is the front view of the present invention;

[0019] Figure 2 This is a perspective view of the present utility model;

[0020] Figure 3 This is a cross-sectional view of the present invention;

[0021] Figure 4 This is an exploded view of the present invention;

[0022] Figure 5 This is a perspective view of the socket in this utility model.

[0023] Explanation of the labels in the diagram:

[0024] 1. Main body cover; 2. Lower cover; 3. Upper cover; 4. Socket; 5. Connection port; 601. Elastic buckle; 602. Limiting block; 603. Raised rib; 701. Waterproof shell; 702. Sealing ring; 8. Spare port; 9. Mounting strip; 10. Mounting hole. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0026] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," 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" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within 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.

[0028] Example:

[0029] Please see Figure 1-5 A novel fuse box includes a main body cover 1, a lower cover 2, and an upper cover 3. The lower cover 2 is fixedly connected to the bottom end of the main body cover 1, and the upper cover 3 is detachably connected to the top end of the main body cover 1. A socket 4 is detachably connected inside the main body cover 1, and a connection port 5 is provided on the socket 4. A fastening component and a waterproof component are provided between the main body cover 1 and the upper cover 3. The fastening component is used to connect the main body cover 1 and the upper cover 3 and to restrict and fix the fuse. The waterproof component is used to ensure the airtightness between the main body cover 1 and the upper cover 3 and to prevent water from entering the fuse box.

[0030] In this embodiment, the wiring inside the vehicle is connected to the bottom of the socket 4 via the lower cover 2. The socket 4 is used to insert fuses via the connection port 5. When the fuse on the socket 4 needs maintenance, the upper cover 3 is removed from the main body cover 1 by opening the fastening assembly, thereby enabling fuse maintenance and replacement. After the fuse maintenance and replacement are completed, the upper cover 3 is installed on the main body cover 1 via the fastening assembly. The upper cover 3 protects the fuse inserted in the connection port 5 on the socket 4 and restricts the fuse to prevent it from loosening or falling off. After the main body cover 1 and the upper cover 3 are connected, the waterproof assembly ensures the sealing of the upper cover 3 and the main body cover 1 after connection, enabling effective waterproofing.

[0031] Specifically, the fastening assembly includes two elastic buckles 601, two limiting blocks 602, and multiple protruding ribs 603. The two elastic buckles 601 are fixedly connected to the two sides of the upper cover 3, and the two limiting blocks 602 are fixedly connected to the two sides of the main body sleeve 1. The two elastic buckles 601 and the two limiting blocks 602 are engaged with each other. The multiple protruding ribs 603 are fixedly connected to the top wall of the upper cover 3, and the multiple protruding ribs 603 correspond to the connecting socket 5.

[0032] In this embodiment, the two elastic buckles 601 have a certain elasticity, so they can directly engage with the two limiting blocks 602 to connect the top cover 3 and the main body sleeve 1. After the top cover 3 is connected to the main body sleeve 1, the multiple protruding ribs 603 will contact the top of the fuse plugged into the socket 4, so that the fuse can be used stably. When the fuse needs to be maintained or replaced, by pressing the two elastic buckles 601, it can be disengaged from the two limiting blocks 602, thereby disassembling the top cover 3 and allowing the fuse to be maintained or replaced.

[0033] Specifically, the waterproof component includes a waterproof housing 701 and a sealing ring 702. The waterproof housing 701 is fixedly connected to the upper cover 3 and corresponds to the top of the main protective sleeve 1. The sealing ring 702 is fixedly connected inside the main protective sleeve 1 and corresponds to the bottom of the upper cover 3.

[0034] In this embodiment, when the upper cover 3 is connected to the main body sleeve 1, the top of the main body sleeve 1 enters the waterproof housing 701, and the waterproof housing 701 and the top of the main body sleeve 1 form a barrier, which can achieve IPX9K level waterproofing. The bottom of the upper cover 3 will contact the sealing ring 702 inside the main body sleeve 1 and squeeze the sealing ring 702 to achieve IPX7 level waterproofing. The sealing ring 702 is designed with an L-shaped cross section, which has a good buffering and pre-tensioning effect on the upper cover 3, preventing breakage caused by vehicle vibration during use and improving the vibration resistance of the fuse box.

[0035] Specifically, there are 12 groups of connection ports 5, and each group has two connection ports 5.

[0036] In this embodiment, each group of two connection ports 5 corresponds to one fuse, and the 12 groups of connection ports 5 can accommodate up to 12 small blade fuses with a maximum current of 45A.

[0037] Specifically, the socket 4 is equipped with multiple sets of spare sockets 8, and each set of spare sockets 8 consists of two sockets.

[0038] In this embodiment, each group of two spare sockets 8 corresponds to one spare fuse. By setting up multiple groups of spare sockets 8, the risk of temporarily being unable to find a fuse can be prevented.

[0039] Specifically, the outer surface of the main sheath 1 is fixedly connected with an installation strip 9, and the installation strip 9 has two installation holes 10.

[0040] In this embodiment, the entire fuse box can be installed in the engine compartment by using the two mounting holes 10 on the mounting strip 9 in conjunction with bolts.

[0041] Working principle: The wiring inside the vehicle connects to the bottom of the socket 4 via the lower cover 2. The socket 4 connects to the fuse via the connector 5. When the fuse in the socket 4 needs maintenance or replacement, pressing the two elastic clips 601 disengages it from the two limiting blocks 602, thereby removing the upper cover 3. This allows the fuse in the connector 5 of the socket 4 to be maintained or replaced. After the fuse maintenance or replacement is completed, the upper cover 3 is reinstalled on the main unit by the elastic engagement of the two elastic clips 601 and the two limiting blocks 602. On the main body sleeve 1, the top cover 3 protects the fuse inserted into the connection port 5 on the socket 4, and restricts the fuse with multiple ribs 603 to prevent the fuse from loosening and falling off. After the main body sleeve 1 and the top cover 3 are connected, the top of the main body sleeve 1 enters the waterproof shell 701. The waterproof shell 701 and the top of the main body sleeve 1 form a barrier, which can achieve IPX9K waterproof rating. The bottom of the top cover 3 will contact the sealing ring 702 inside the main body sleeve 1 and squeeze the sealing ring 702 to achieve IPX7 waterproof rating.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A novel fuse box, comprising a main body cover (1), a lower cover (2), and an upper cover (3), characterized in that: The lower cover (2) is fixedly connected to the bottom end of the main body cover (1), and the upper cover (3) is detachably connected to the top end of the main body cover (1). A socket (4) is detachably connected inside the main body cover (1), and a connection port (5) is provided on the socket (4). A fastening component and a waterproof component are provided between the main body cover (1) and the upper cover (3). The fastening component is used to connect the main body cover (1) and the upper cover (3) and to restrict and fix the fuse. The waterproof component is used to ensure the sealing between the main body cover (1) and the upper cover (3) and to prevent water from entering the fuse box.

2. The novel fuse box according to claim 1, characterized in that: The fastening assembly includes two elastic buckles (601), two limiting blocks (602), and multiple ribs (603). The two elastic buckles (601) are fixedly connected to the two sides of the upper cover (3), and the two limiting blocks (602) are fixedly connected to the two sides of the main body sleeve (1). The two elastic buckles (601) and the two limiting blocks (602) are engaged with each other. The multiple ribs (603) are fixedly connected to the top wall of the upper cover (3), and the multiple ribs (603) correspond to the connecting socket (5).

3. A novel fuse box according to claim 2, characterized in that: The waterproof component includes a waterproof housing (701) and a sealing ring (702). The waterproof housing (701) is fixedly connected to the top cover (3) and corresponds to the top end of the main body cover (1). The sealing ring (702) is fixedly connected inside the main body cover (1) and corresponds to the bottom end of the top cover (3).

4. A novel fuse box according to claim 3, characterized in that: The connection ports (5) are set to 12 groups, and each group of connection ports (5) has two ports.

5. A novel fuse box according to claim 4, characterized in that: The socket (4) is provided with multiple sets of spare sockets (8), and each set of spare sockets (8) consists of two sockets.

6. A novel fuse box according to claim 5, characterized in that: The outer surface of the main sheath (1) is fixedly connected to an installation strip (9), and the installation strip (9) has two installation holes (10).