A fuse box

Abstract

The application relates to the technical field of fuses, in particular to a fuse box which comprises a shell assembly and at least two types of fuse assemblies, the inside of the shell assembly is provided with a containing cavity for containing one fuse assembly, a wall part of the shell assembly is provided with a hole part for connecting a wire harness to extend into the containing cavity, each fuse assembly is respectively provided with different wiring elements, any fuse assembly can be detachably installed in the containing cavity and electrically connected with the wire harness through the wiring elements. The fuse box adopts a general shell assembly and provides at least two types of fuse assemblies, the fuse assembly with adaptive wiring elements can be conveniently selected according to application scenes, a new fuse box does not need to be designed or purchased for different scenes, and the compatibility is enhanced; the shell assembly and the fuse assembly adopt a detachable connection mode, the fuse assembly which is fused can be conveniently replaced, the shell assembly can be repeatedly used, the utilization rate of the shell assembly is improved, and the cost is reduced.

Description

Technical Field

[0001] This application relates to the field of fuse technology, specifically to a fuse box. Background Technology

[0002] The related fuse box adopts an integrated design, which can only be applied to specific scenarios and has poor compatibility; moreover, the entire fuse box must be replaced after the fuse blows, which is costly. Utility Model Content

[0003] The purpose of this application is to provide a fuse box that solves the problems of high cost and poor compatibility. The specific solution is as follows: A fuse box includes a housing assembly and at least two types of fuse assemblies. The housing assembly has an internal cavity for accommodating one of the fuse assemblies. The wall of the housing assembly has a hole for connecting wire harnesses to extend into the cavity. Each fuse assembly is provided with a different wiring element. Any fuse assembly can be detachably installed inside the cavity and electrically connected to the wiring harnesses via the wiring elements.

[0004] Optionally, the housing assembly includes a housing, two end blocks, and two end caps, wherein: The interior of the housing is hollow, and the two axial ends of the housing are open ends. The two end caps are detachably installed at both ends of the housing. The housing and the end caps enclose the cavity. The end caps are provided with the holes, and the end blocks are provided with through holes for the connecting wire harness to pass through. In the working state of the fuse box, one of the fuse assemblies is installed inside the receiving cavity, and the two end blocks are respectively axially limited and installed between the end caps at both ends and the opposite ends of the fuse assemblies.

[0005] Optionally, the end cap includes a first end cap and a second end cap, both of which are provided with a groove. The first end cap and the second end cap are detachably fixedly connected, and the two grooves enclose the hole.

[0006] Optionally, each of the fuse assemblies includes a fuse and an inner housing, the fuse being installed inside the inner housing and being removable.

[0007] Optionally, the inner shell includes: An insulating shell, the interior of which is hollow and has open ends at both axial ends, and the fuse is installed in the insulating shell; The shielding shell and the shielding end cap are hollow inside and open at both ends along the axial direction. The shielding end cap is detachably connected to both ends of the shielding shell. The shielding shell and the shielding end cap form a shielding cavity. The insulating shell is installed inside the shielding cavity. The shielding end cap is provided with a clearance hole for the connecting wire harness to pass through.

[0008] Optionally, the wiring element in one of the fuse assemblies includes a cylindrical portion and a spring sleeve portion connected to the cylindrical portion, with a portion of the cylindrical portion located inside the spring sleeve portion; The end of the fuse is inserted into the interior of the spring sleeve to achieve electrical connection and abuts against the end of the cylindrical part located inside the spring sleeve; the portion of the connecting harness located inside the receiving cavity can be fixedly inserted into the interior of the cylindrical part and electrically connected.

[0009] Optionally, one of the wiring elements in the fuse assembly includes a wiring portion fixedly connected to the fuse, the wiring portion having a fixing hole inside, the fixing hole penetrating the free end wall of the wiring portion, and a portion of the connecting wire harness located inside the receiving cavity being fixedly inserted into the fixing hole and electrically connected.

[0010] Optionally, the wiring element has a stepped wall facing the shielded end cap; the fuse assembly further includes: A stop block is installed inside the insulating shell. The stop block has an axial through hole through which a portion of the wiring element is inserted. The stop block abuts against the end wall of the fuse and the stepped wall, and the stop block abuts against the end wall of the shielding end cap opposite to the fuse.

[0011] Optionally, the insulating shell has a mounting base inside, and the wiring element in one of the fuse assemblies includes a connecting piece and a terminal. The connecting piece is fixedly connected to the fuse, and the terminal has a first end and a second end. The fuse assembly also includes a connector for detachably fixing the connecting piece and the first end to the mounting base to achieve electrical connection. The portion of the connecting harness located inside the receiving cavity can be fixedly connected to the second end to achieve electrical connection.

[0012] Optionally, the wall of the insulating shell is provided with an opening, and the fixing base and the connecting piece are located inside the opening in a projection plane perpendicular to the axial direction of the fixing base.

[0013] Traditional fuse boxes, due to their fixed structure, can only be adapted to specific scenarios. In contrast, the fuse box of this application adopts a universal housing assembly and provides at least two types of fuse assemblies according to the different circuit connection requirements of different application scenarios. Each fuse assembly is equipped with different wiring elements. Any fuse assembly can be detachably installed in the receiving cavity of the housing assembly. A stable electrical connection is achieved through the wiring elements and the connecting wires extending into the receiving cavity. This allows users to conveniently select and replace fuse assemblies with corresponding matching wiring elements according to the application scenario, without having to design or purchase new fuse boxes separately for different scenarios. This improves the utilization rate of the housing assembly and significantly enhances the scenario adaptability and compatibility of the fuse box of this application.

[0014] Meanwhile, the housing assembly and fuse assembly are detachably connected, allowing users to easily remove the blown fuse assembly and replace it with a new one after it blows, improving maintenance efficiency. The housing assembly can also be reused without scrapping the entire fuse box, increasing the utilization rate of the housing assembly and reducing costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a specific embodiment of the fuse box provided in this application in the connected state with the connecting wire harness; Figure 2 for Figure 1 A schematic diagram of the split structure; Figure 3 for Figure 1 A schematic diagram of the separate structure of the inner shell, end caps, and connecting wire harness; Figure 4 for Figure 1 A schematic diagram of the split structure of the central fuse assembly; Figure 5 for Figure 4 Axial sectional view of the fuse assembly in its assembled state, with the shielding shell and shielding end cap removed; Figure 6 This is a schematic diagram of the split structure of the second type of fuse assembly in a specific embodiment of the fuse box provided in this application; Figure 7 for Figure 6 Axial sectional view of the fuse and insulating shell in the assembled state; Figure 8 This is a schematic diagram of the split structure of a third type of fuse assembly in a specific embodiment of the fuse box provided in this application; Figure 9 for Figure 8 Axial sectional view of the fuse assembly in its assembled state; The reference numerals in the attached figures are as follows: 1-Outer shell assembly; 1a-Receiving cavity; 1b-Hole; 11-Outer shell; 111-Second snap-fit ​​protrusion; 12-End stop; 12a-Through hole; 13-End cap; 131-First end cap; 132-Second end cap; 133-Recess; 134-First snap-fit ​​protrusion; 135-First snap-fit ​​hole; 136-Second snap-fit ​​hole; 2-Fuse assembly; 21-Wiring element; 21-1-Cylindrical part; 21-2-Spring sleeve part; 21-21-Elastic claw; 21-3-Annular groove; 21-4-Wiring part; 21-4a-Fixing hole; 21-5-Stepped wall; 21-6-Connecting piece; 21-7-Terminal; 21-71-First end; 21-72-Second end; 22-Fuse; 23-Inner shell; 23-1-Insulating shell; 23-11-Fixing base; 23-12-Opening; 23-2-Shielding shell; 23-3-Shielding end cap; 23-3a-Allowing hole; 23-3b-Protrusion; 23-4-Shielding cavity; 24-Stop; 24a-Axial through hole; 25-Support sleeve; 26-Connector; 27-Knurled nut; 3-Connecting harness. Detailed Implementation

[0016] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0017] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0018] It should be understood that the phrase "some embodiments" throughout the specification means that a specific feature, structure, or characteristic related to an embodiment is included in at least one embodiment of this application. Therefore, "some embodiments" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0019] In this description, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art will understand the specific meaning of these terms in this document based on the specific circumstances.

[0020] Please refer to Figures 1-4 , Figure 1 This is a schematic diagram of the structure of a specific embodiment of the fuse box provided in this application in the connected state with the connecting wire harness; Figure 2 for Figure 1 A schematic diagram of the split structure of a fuse box; Figure 3 for Figure 1 A schematic diagram of the separate structure of the inner shell, end caps, and connecting wire harness; Figure 4 for Figure 1 A schematic diagram of the split structure of the fuse assembly.

[0021] This application provides a fuse box, including a housing assembly 1 and at least two types of fuse assemblies 2. The housing assembly 1 has a receiving cavity 1a for accommodating one fuse assembly 2. The wall of the housing assembly 1 is provided with a hole 1b for connecting wire harness 3 to extend into the receiving cavity 1a. Each fuse assembly 2 is provided with different wiring elements 21. Any fuse assembly 2 can be detachably installed inside the receiving cavity 1a and electrically connected to the connecting wire harness 3 through the wiring elements 21.

[0022] Traditional fuse boxes, due to their fixed structure, can only be adapted to specific scenarios. However, the fuse box in this embodiment adopts a universal housing assembly 1 and provides at least two types of fuse assemblies 2 according to the different circuit connection requirements of different application scenarios. Each fuse assembly 2 is configured with different wiring elements 21. Any fuse assembly 2 can be detachably installed in the receiving cavity 1a of the housing assembly 1 and achieve a stable electrical connection with the connecting wire harness 3 extending into the receiving cavity 1a through the wiring elements 21. This allows users to conveniently select and replace the fuse assembly 2 with the corresponding matching wiring elements 21 according to the application scenario, without having to design or purchase a completely new fuse box for different scenarios. This improves the utilization rate of the housing assembly 1 and significantly enhances the scenario adaptability and compatibility of the fuse box in this embodiment.

[0023] Meanwhile, the housing assembly 1 and any fuse assembly 2 are detachably connected, which allows the user to easily remove the blown fuse assembly 2 after it blows and replace it with a new one, improving maintenance efficiency. The housing assembly 1 can still be reused without scrapping the entire fuse box, thus increasing the utilization rate of the housing assembly 1 and reducing costs.

[0024] Please continue to refer to this. Figures 1-3 In this embodiment of the application, the housing assembly 1 includes a housing 11, two end blocks 12, and two end caps 13, wherein: The interior of the outer shell 11 is hollow, and the two axial ends of the outer shell 11 are open ends. Two end caps 13 are detachably installed at both ends of the outer shell 11. The outer shell 11 and the end caps 13 enclose and form a receiving cavity 1a. The end caps 13 are provided with holes 1b, and the end blocks 12 are provided with through holes 12a for connecting wire harness 3 to pass through. In the working state of the fuse box, one of the fuse assemblies 2 is installed inside the receiving cavity 1a, and two end blocks 12 are respectively axially limited and installed between the end caps 13 at both ends and the opposite ends of the fuse assembly 2.

[0025] In this embodiment, the housing assembly 1, with its hollow interior and axially open ends, along with end caps 13 mounted at both ends of the housing 11, stably forms a receiving cavity 1a for accommodating the fuse assembly 2. In the operating state of the fuse box, two end blocks 12 are axially positioned between the end caps 13 and the opposite ends of the fuse assembly 2, thereby axially limiting the fuse assembly 2 and minimizing axial movement within the receiving cavity 1a. This ensures the fuse assembly 2 maintains a stable installation position, preventing the connection between the wiring element 21 and the connecting harness 3 from becoming detached or experiencing poor contact due to positional misalignment, thus guaranteeing the overall stability and safety of the fuse box. The detachable design of the housing 11 and end caps 13 allows the receiving cavity 1a to be opened when needed for replacement and maintenance of the fuse assembly 2.

[0026] Please continue to refer to this. Figure 3 In this embodiment of the application, the end cap 13 includes a first end cap 131 and a second end cap 132. Both the first end cap 131 and the second end cap 132 are provided with a groove portion 133. The first end cap 131 and the second end cap 132 can be detachably fixedly connected, and the two groove portions 133 surround to form a hole portion 1b.

[0027] As described above, in this embodiment, the end cover 13 adopts a split structure including a first end cover 131 and a second end cover 132. The steps for installing the fuse assembly 2 in the fuse box in this embodiment are as follows: The connecting wire harnesses 3 at both ends are passed through the through holes 12a provided on the end blocks 12 respectively; one end of the connecting wire harness 3 is connected to the fuse assembly 2, and the fuse assembly 2 is installed inside the receiving cavity 1a; the other end of the connecting wire harness 3 is connected to the fuse assembly 2, and the end blocks 12 at both ends are installed inside the receiving cavity 1a; the first end cap 131 and the second end cap 132 are connected to the outer shell 11 and connected to each other, the connecting wire harness 3 is clamped inside the hole 1b formed by the two grooves 133, the end of the end block 12 facing the fuse assembly 2 abuts against the fuse assembly 2, and the end of the end block 12 facing the end cap 13 abuts against the end cap 13, thereby fixing the fuse assembly 2.

[0028] The steps for replacing fuse assembly 2 in the fuse box according to this embodiment are as follows: Disconnect the two end caps 13 from the housing 11, and disconnect the first end cap 131 and the second end cap 132. At this time, the connecting harness 3 is separated from the end caps 13, and the fuse assembly 2 is pulled out from one end of the housing 11 through the connecting harness 3. If the connecting harness 3 and the fuse assembly 2 are connected in a detachable manner, disconnect the connecting harness 3 from the fuse assembly 2, and connect the new fuse assembly 2 to the connecting harnesses 3 at both ends. Insert the fuse assembly 2 and the end blocks 12 at both ends into the receiving cavity 1a, connect the first end cap 131 and the second end cap 132 to the housing 11 and connect them to each other. The connecting harness 3 is clamped inside the hole 1b formed by the two recessed portions 133, thereby completing the replacement of the fuse assembly 2.

[0029] If the connecting harness 3 and the fuse assembly 2 are connected in a non-detachable manner, the fuse assembly 2 and a small section of the connecting harness 3 connected to the fuse assembly 2 can be detached together. Since the connecting harness 3 usually has a certain redundant length, the new fuse assembly 2 can still be connected to the connecting harness 3 at both ends. The fuse assembly 2 and the end blocks 12 at both ends are installed into the cavity 1a. The first end cap 131 and the second end cap 132 are connected to the outer shell 11 and interconnected. The connecting harness 3 is clamped inside the hole 1b formed by the two recessed portions 133, thereby completing the replacement of the fuse assembly 2.

[0030] Therefore, in this embodiment, the end cap 13 forms a hole 1b by two grooves 133. This split-fit structure eliminates the need for pre-threading of the connecting wire harness 3, significantly reducing the assembly difficulty of the connecting wire harness 3 and the end cap 13, improving overall assembly efficiency, and avoiding the risk of damage to the connecting wire harness 3 during assembly. Furthermore, due to this split-fit structure, by designing the dimensions of the two grooves 133, the inner diameter of the hole 1b formed by the two grooves can be slightly smaller than the outer diameter of the connecting wire harness 3. On the one hand, the inner wall of the hole 1b can form a stable clamping force on the connecting wire harness 3, restricting its movement within the hole 1b, ensuring that the connecting wire harness 3 always maintains a reliable electrical connection with the wiring element 21. On the other hand, it avoids gaps between the connecting wire harness 3 and the hole 1b, preventing external dust, moisture, and other impurities from entering the receiving cavity 1a through these gaps, thus improving the safety of the fuse box.

[0031] The connection method of the first end cap 131 and the second end cap 132 is not limited. In the embodiment of this application, one of the first end cap 131 and the second end cap 132 is provided with a first snap-fit ​​protrusion 134 and the other is provided with a first snap-fit ​​hole 135. The first snap-fit ​​protrusion 134 can be snapped into the first snap-fit ​​hole 135 to realize the fixed connection of the first end cap 131 and the second end cap 132, ensuring the reliable connection between the two, and making the installation and disassembly of the two more convenient.

[0032] Meanwhile, both the first end cap 131 and the second end cap 132 are provided with one of the second snap-fit ​​protrusion 111 and the second snap-fit ​​hole 136, and the peripheral wall of the outer shell 11 is provided with the other of the second snap-fit ​​protrusion 111 and the second snap-fit ​​hole 136. The second snap-fit ​​protrusion 111 can snap into the inside of the second snap-fit ​​hole 136, so as to realize the fixed connection between the first end cap 131 and the outer shell 11, and the fixed connection between the second end cap 132 and the outer shell 11. This ensures that the connection between the two is reliable, and makes the installation and disassembly of the two more convenient.

[0033] Please continue to refer to this. Figure 2 In this embodiment of the application, the housing assembly 1 further includes a first sealing ring 14 and a second sealing ring 15. When the fuse box is in operation, the first sealing ring 14 is circumferentially sealed between the outer wall of the end block 12 and the inner wall of the housing 11, and the second sealing ring 15 is circumferentially sealed between the inner wall of the end block 12 and the outer wall of the connecting wire harness 3.

[0034] The arrangement of the first sealing ring 14 and the second sealing ring 15 as described above enables reliable sealing of the receiving cavity 1a, preventing external dust, moisture and other impurities from entering the receiving cavity 1a through the gap, thereby improving the safety of the fuse box.

[0035] Please refer to Figures 4-9 , Figure 4 for Figure 1 A schematic diagram of the split structure of the central fuse assembly; Figure 5 for Figure 4 Axial sectional view of the fuse assembly with the shield removed in the assembled state; Figure 6 This is a schematic diagram of the split structure of the second type of fuse assembly in a specific embodiment of the fuse box provided in this application; Figure 7 for Figure 6 Axial sectional view of the fuse and insulating shell in the assembled state; Figure 8 This is a schematic diagram of the split structure of a third type of fuse assembly in a specific embodiment of the fuse box provided in this application; Figure 9 for Figure 8 Axial sectional view of the fuse assembly in its assembled state.

[0036] In this embodiment, each fuse assembly 2 includes a fuse 22 and an inner housing 23. The fuse 22 is installed inside the inner housing 23 and is removable.

[0037] As described above, the inner shell 23 in the fuse assembly 2 can further protect the fuse 22. The fuse 22 and the inner shell 23 are detachable. When the fuse 22 blows, the user can easily remove the blown fuse 22 and replace it with a new fuse, improving maintenance efficiency. The inner shell 23 can still be reused without scrapping the entire fuse assembly 2, thus improving the utilization rate of the inner shell 23 and reducing costs.

[0038] In this embodiment of the application, the inner shell 23 includes: Insulating shell 23-1, the interior of insulating shell 23-1 is hollow and the two ends of the axial direction are open ends, and fuse 22 is installed in insulating shell 23-1; The shielding shell 23-2 and the shielding end cap 23-3 are hollow inside and open at both ends in the axial direction. The shielding end cap 23-3 is detachably connected to both ends of the shielding shell 23-2. The shielding shell 23-2 and the shielding end cap 23-3 enclose a shielding cavity 23-4. The insulating shell 23-1 is installed inside the shielding cavity 23-4. The shielding end cap 23-3 is provided with a clearance hole 23-3a for the wire harness 3 to pass through.

[0039] As described above, the insulating shell 23-1 is hollow inside, with open ends at both axial directions. This design not only stably accommodates the fuse 22 but also isolates the fuse 22 from the external structure (shielding shell 23-2), preventing short-circuit risks and improving safety performance. The shielding shell 23-2 and the shielding end cap 23-3 are typically made of metal, such as copper, or other electromagnetically conductive materials. The shielding cavity 23-4 formed by the shielding shell 23-2 and the shielding end cap 23-3 provides electromagnetic shielding, ensuring that the fuse 22 only melts precisely in the event of a circuit overload, thus improving the accuracy and stability of circuit protection. Furthermore, the shielding end cap 23-3 is detachably connected to both ends of the shielding shell 23-2, facilitating the installation and removal of the fuse 22 and improving the convenience of fuse replacement and maintenance. The clearance hole 23-3a provided in the shielding end cap 23-3 allows the connecting wire harness 3 to enter the shielding cavity 23-4, ensuring that the connecting wire harness 3 can be smoothly connected to the wiring element 21. By designing the dimensions of the clearance hole 23-3a, the connecting wire harness 3 and the inner wall of the clearance hole 23-3a are made to fit tightly together, so that the integrity of the shielding cavity 23-4 can still be maintained after the connecting wire harness 3 passes through, thus ensuring the electromagnetic shielding effect. Please refer to Figure 8 and Figure 9 In this embodiment of the application, the shielding end cap 23-3 is fitted onto the outer periphery of the insulating shell 23-1. The outer peripheral wall of the shielding end cap 23-3 is provided with circumferentially distributed protrusions 23-3b. The protrusions 23-3b and the inner peripheral wall of the shielding shell 23-2 are interference-fitted, thereby achieving a reliable connection between the shielding shell 23-2 and the shielding end cap 23-3 while reducing the contact area between the shielding shell 23-2 and the shielding end cap 23-3, and improving the ease of installation and removal of the shielding shell 23-2 and the shielding end cap 23-3.

[0040] In some other embodiments of this application, the shielding end cap 23-3 is fitted onto the outer periphery of the shielding shell 23-2. The outer peripheral wall of the shielding shell 23-2 and the inner peripheral wall of the shielding end cap 23-3 are provided with a protrusion 23-3b, and the other is interference-fitted with the protrusion 23-3b.

[0041] In this embodiment, the fuse assembly 2 includes a support sleeve 25, which is fitted around the outer periphery of a portion of the shielding end cover 23-3, providing structural support and reducing deformation of the shielding end cover 23-3. The support sleeve 25 may be made of stainless steel.

[0042] Please continue to refer to this. Figure 4 and Figure 5 In one embodiment of this application, the wiring element 21 in a fuse assembly 2 includes a cylindrical portion 21-1 and a spring sleeve portion 21-2 connected to the cylindrical portion 21-1, with a portion of the cylindrical portion 21-1 located inside the spring sleeve portion 21-2; The end of the fuse 22 is inserted into the inside of the sleeve portion 21-2 to achieve electrical connection, and abuts against the end of the cylindrical portion 21-1 located inside the sleeve portion 21-2; the part of the connecting wire harness 3 located inside the receiving cavity 1a can be fixedly inserted into the inside of the cylindrical portion 21-1 and electrically connected.

[0043] As configured above, in this embodiment, when the wiring element 21 is connected to the connecting wire harness 3, the portion of the connecting wire harness 3 located within the receiving cavity 1a can be inserted into the cylindrical portion 21-1. A special clamping fixture then applies clamping force to the outer wall of the cylindrical portion 21-1, ensuring a stable clamping of the connecting wire harness 3 and preventing it from loosening, thus guaranteeing a reliable connection between the wiring element 21 and the connecting wire harness 3. The wiring element 21 is inserted into the fuse 22 via the spring sleeve portion 21-2. Figure 4 and Figure 5 As can be seen, the sleeve portion 21-2 includes multiple elastic claws 21-21, which are spaced apart along the circumference of the sleeve portion 21-2, giving the sleeve portion 21-2 a certain elastic deformation capability. When the end of the fuse 22 is inserted into the sleeve portion 21-2, the elastic claws 21-21 are opened, and under the action of elastic restoring force, the elastic claws 21-21 and the fuse 22 are tightly fitted, thereby achieving a reliable electrical connection. The end of the cylindrical portion 21-1 located inside the sleeve portion 21-2 can provide precise axial positioning for the fuse 22. When the end of the fuse 22 abuts against the end of the cylindrical portion 21-1 located inside the sleeve portion 21-2, it indicates that the fuse 22 is properly inserted, avoiding poor contact due to shallow insertion or excessive deformation and damage to the sleeve portion 21-2 due to excessive insertion, ensuring a reliable connection between the wiring element 21 and the fuse 22. In summary, this flexible plug-in connection method improves the reliability of the connection between fuse 22 and wiring harness 3, makes subsequent maintenance more convenient, shortens maintenance time, and reduces the replacement cost of fuse 22, making it suitable for high-end commercial vehicles.

[0044] Depend on Figure 4 and Figure 5 As can be seen, in this embodiment, the outer peripheral wall of the sleeve portion 21-2 is also provided with an annular groove 21-3. The annular groove 21-3 reduces the wall thickness of the sleeve portion 21-2 in this area, increases the deformation capacity of the sleeve portion 21-2, and makes the installation of the fuse 22 and the sleeve portion 21-2 smoother. On the other hand, the annular groove 21-3 can also be used to install clamps, improving the reliability of the fuse 22 and the sleeve portion 21-2.

[0045] Please continue to refer to this. Figures 6-7In one embodiment of this application, the wiring element 21 in one fuse assembly 2 includes a wiring portion 21-4 fixedly connected to the fuse 22. The wiring portion 21-4 has a fixing hole 21-4a inside, which passes through the free end wall of the wiring portion 21-4. A portion of the connecting wire harness 3 located inside the receiving cavity 1a can be fixedly inserted into the fixing hole 21-4a and electrically connected.

[0046] As described above, in this embodiment of the application, the fuse assembly 2 is directly connected to the fuse 22 by the connecting wire harness 3. When the fuse 22 is connected to the connecting wire harness 3, the part of the connecting wire harness 3 located in the receiving cavity 1a can be inserted into the inside of the fixing hole 21-4a. Then, a clamping force is applied to the outer wall of the wiring part 21-4 by a special clamping tool, so that the wiring part 21-4 can form a stable clamp on the connecting wire harness 3, avoiding the problem of wire harness loosening and ensuring the reliable connection between the fuse 22 and the connecting wire harness 3.

[0047] This method of direct contact between the fuse 22 and the connecting harness 3 helps to reduce the number of parts, lower structural costs, improve the connection reliability between the fuse 22 and the connecting harness 3, and improve performance in extreme environments, making it suitable for performance sports cars.

[0048] Please continue to refer to this. Figures 4-7 In some embodiments of this application, the wiring element 21 has a stepped wall 21-5 facing the shielded end cap 23-3; the fuse assembly 2 further includes: The stop block 24 is installed inside the insulating shell 23-1. The stop block 24 has an axial through hole 24a. Some wiring elements 21 are inserted into the axial through hole 24a. The stop block 24 abuts against the end wall of the fuse 22 and the stepped wall 21-5, and the stop block 24 abuts against the end wall of the fuse 22 and the shielding end cap 23-3.

[0049] As described above, the fuse 22 and the wiring element 21 are axially clamped between the two end blocks 24 to prevent axial movement of the fuse 22 and the wiring element 21. This ensures that the fuse 22 and the wiring element 21 always maintain a stable installation position, preventing the connection between the wiring element 21 and the connecting wire harness 3 from falling off or making poor contact due to positional deviation, thus ensuring the overall stability and safety of the fuse box. In embodiments where the fuse 22 and the wiring element 21 are connected by a flexible plug-in connection, the end blocks 24 also ensure that the wiring element 21 and the fuse 22 always maintain a preset contact depth, ensuring a reliable connection between the wiring element 21 and the fuse 22. Furthermore, the axial through hole 24a provided in the end block 24 can also avoid the connecting wire harness 3, ensuring that the connecting wire harness 3 can be smoothly connected to the wiring element 21.

[0050] Please continue to refer to this. Figures 8-9In this embodiment of the application, the insulating shell 23-1 has a fixing seat 23-11 inside. The wiring element 21 in one of the fuse assemblies 2 includes a connecting piece 21-6 and a terminal 21-7. The connecting piece 21-6 is fixedly connected to the fuse 22. The terminal 21-7 has a first end 21-71 and a second end 21-72. The fuse assembly 2 also includes a connector 26, which is used to detachably fix the connecting piece 21-6 and the first end 21-71 to the fixing seat 23-11 to achieve electrical connection. The part of the connecting wire harness 3 located inside the receiving cavity 1a can be fixedly connected to the second end 21-72 to achieve electrical connection.

[0051] As described above, the mounting base 23-11 provides a stable mounting reference for the assembly of the connecting piece 21-6 and the first end 21-71, ensuring that the fuse 22 always maintains a stable mounting position inside the insulating shell 23-1. This prevents the connection between the wiring element 21 and the connecting harness 3 from becoming detached or making poor contact due to positional misalignment, thus ensuring the overall stability and safety of the fuse box. Furthermore, the detachable connection between the connecting piece 21-6 and the terminal 21-7, secured by the connector 26, makes fuse 22 maintenance more convenient and reduces the cost of replacing the fuse 22, making it suitable for economical vehicles.

[0052] like Figure 8 and Figure 9 As shown in the embodiment of this application, the fuse assembly 2 also includes a knurled nut 27, which is embedded inside the fixing seat 23-11. The connector 26 is a threaded connector, and the connecting piece 21-6 and the first end 21-71 are respectively provided with connecting holes. The connector 26 passes through the connecting holes provided in the connecting piece 21-6 and the first end 21-71 and is threadedly connected to the knurled nut 27, so as to realize the detachable fixing of the connecting piece 21-6, the first end 21-71 and the fixing seat 23-11.

[0053] Among them, the insulating shell 23-1 can be injection molded with the knurled nut 27 as an insert to improve the connection reliability between the knurled nut 27 and the fixing seat 23-11.

[0054] like Figure 8 and Figure 9 As shown in the embodiment of this application, the second end 21-72 is generally U-shaped and has a connecting groove inside. The part of the connecting wire harness 3 located in the receiving cavity 1a can extend into the connecting groove. Then, a clamping force is applied to the second end 21-72 by a special clamping tool, so that the second end 21-72 can form a stable clamping on the connecting wire harness 3, avoiding the problem of wire harness loosening and ensuring reliable connection between the terminal 21-7 and the connecting wire harness 3.

[0055] Please continue to refer to this. Figures 8-9In this embodiment of the application, the wall of the insulating shell 23-1 is provided with an opening 23-12. In the projection plane perpendicular to the axis of the fixing seat 23-11, the fixing seat 23-11 and the connecting piece 21-6 are located inside the opening 23-12.

[0056] During the assembly of fuse 22, the assembly of fixing base 23-11 and connecting piece 21-6 requires a certain operating space. To improve assembly convenience, in this embodiment, fixing base 23-11 and connecting piece 21-6 are located inside opening 23-12 in a projection plane perpendicular to the axis of fixing base 23-11. That is, opening 23-12 forms an operating window on the wall of insulating shell 23-1 facing fixing base 23-11 and connecting piece 21-6. Operators can directly insert fuse 22 into the interior of insulating shell 23-1 or remove fuse 22 through opening 23-12, thereby improving assembly efficiency and installation accuracy.

[0057] In summary, the fuse box of this application achieves a precise balance of cost, reliability, and maintenance efficiency through three differentiated structural designs: a bolt-connected type suitable for economy vehicles with minimal cost and easy maintenance; a plug-in type serving high-end commercial vehicles with optimized contact terminal design and quick-replacement features; and a non-replaceable type meeting the extreme operating conditions of performance vehicles through a simplified structure and enhanced stability. From a professional perspective, the fuse box of this application has strong market adaptability and provides a more competitive tiered solution for vehicles with different positioning. The introduction of a modular design concept further simplifies the assembly process and enhances maintenance convenience.

[0058] The above are merely preferred embodiments of this application. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A fuse box, characterized in that, The device includes a housing assembly (1) and at least two types of fuse assemblies (2). The housing assembly (1) has a receiving cavity (1a) for accommodating one of the fuse assemblies (2). The wall of the housing assembly (1) is provided with a hole (1b) for connecting a wire harness (3) to extend into the receiving cavity (1a). Each fuse assembly (2) is provided with a different wiring element (21). Any fuse assembly (2) can be detachably installed inside the receiving cavity (1a) and electrically connected to the connecting wire harness (3) through the wiring element (21).

2. The fuse box according to claim 1, characterized in that, The housing assembly (1) includes a housing (11), two end blocks (12) and two end caps (13), wherein: The interior of the outer shell (11) is hollow, and the two ends of the outer shell (11) are open ends. The two end caps (13) are detachably installed at both ends of the outer shell (11). The outer shell (11) and the end caps (13) enclose the receiving cavity (1a). The end caps (13) are provided with the hole (1b). The end block (12) is provided with a through hole (12a) for the connecting wire harness (3) to pass through. In the working state of the fuse box, one of the fuse assemblies (2) is installed inside the receiving cavity (1a), and two end blocks (12) are respectively axially limited and installed between the end caps (13) at both ends and the opposite ends of the fuse assembly (2).

3. The fuse box according to claim 2, characterized in that, The end cap (13) includes a first end cap (131) and a second end cap (132). Both the first end cap (131) and the second end cap (132) are provided with a groove (133). The first end cap (131) and the second end cap (132) can be detachably fixedly connected. The two grooves (133) surround the hole (1b).

4. The fuse box according to any one of claims 1-3, characterized in that, Each of the fuse assemblies (2) includes a fuse (22) and an inner housing (23), wherein the fuse (22) is installed inside the inner housing (23) and is removable.

5. The fuse box according to claim 4, characterized in that, The inner shell (23) includes: An insulating shell (23-1) is hollow inside and has open ends at both axial ends. The fuse (22) is installed in the insulating shell (23-1). The shielding shell (23-2) and the shielding end cap (23-3) are hollow inside and open at both ends in the axial direction. The shielding end cap (23-3) is detachably connected to both ends of the shielding shell (23-2). The shielding shell (23-2) and the shielding end cap (23-3) enclose a shielding cavity (23-4). The insulating shell (23-1) is installed inside the shielding cavity (23-4). The shielding end cap (23-3) is provided with a clearance hole (23-3a) for the connecting wire harness (3) to pass through.

6. The fuse box according to claim 5, characterized in that, One of the fuse assemblies (2) includes a wiring element (21) comprising a cylindrical portion (21-1) and a spring sleeve portion (21-2) connected to the cylindrical portion (21-1), with a portion of the cylindrical portion (21-1) located inside the spring sleeve portion (21-2); The end of the fuse (22) is inserted into the inside of the spring sleeve (21-2) to achieve electrical connection and abuts against the end of the cylindrical part (21-1) located inside the spring sleeve (21-2); the part of the connecting wire harness (3) located inside the receiving cavity (1a) can be fixedly inserted into the inside of the cylindrical part (21-1) and electrically connected.

7. The fuse box according to claim 5, characterized in that, One of the fuse assemblies (2) includes a wiring element (21) fixedly connected to the fuse (22), the wiring part (21-4) having a fixing hole (21-4a) inside, the fixing hole (21-4a) penetrating the free end wall of the wiring part (21-4), and a portion of the connecting wire harness (3) located inside the receiving cavity (1a) being fixedly inserted into the fixing hole (21-4a) and electrically connected.

8. The fuse box according to claim 6 or 7, characterized in that, The wiring element (21) has a stepped wall (21-5) facing the shielding end cap (23-3); the fuse assembly (2) further includes: A stop (24) is installed inside the insulating shell (23-1). The stop (24) has an axial through hole (24a) into which a portion of the wiring element (21) is inserted. The stop (24) abuts against the end wall of the fuse (22) and the stepped wall (21-5) facing away from the fuse (22) and the shielding end cap (23-3).

9. The fuse box according to claim 5, characterized in that, The insulating shell (23-1) has a mounting base (23-11) inside. The wiring element (21) in one of the fuse assemblies (2) includes a connecting piece (21-6) and a terminal (21-7). The connecting piece (21-6) is fixedly connected to the fuse (22). The terminal (21-7) has a first end (21-71) and a second end (21-72). The fuse assembly (2) also includes a connector (26) for detachably fixing the connecting piece (21-6) and the first end (21-71) to the mounting base (23-11) to achieve electrical connection. The portion of the connecting wire harness (3) located inside the receiving cavity (1a) can be fixedly connected to the second end (21-72) to achieve electrical connection.

10. The fuse box according to claim 9, characterized in that, The insulating shell (23-1) has an opening (23-12) on its wall. In a projection plane perpendicular to the axis of the fixing seat (23-11), the fixing seat (23-11) and the connecting piece (21-6) are located inside the opening (23-12).

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