A splicing type safety box for installing a safety sheet

Abstract

The utility model discloses a kind of insurance box for installing fuse piece of splicing type, to solve the problem of high cost and inconvenient disassembly caused by additional locking mechanism of existing splicing box body. The insurance box includes box body and cover body, the first connecting part with sliding slot is arranged on one side of box body, and the second connecting part that can be slidably matched with the sliding slot of another box body is arranged on the other side;Box body above second connecting part is provided with a limiting step to prevent the box body from sliding off downward after splicing, and the second connecting part of another box body is pressed tightly when the cover body is closed to prevent sliding off upward. The utility model does not need additional locking mechanism, forms double anti-dropping through "limiting step and cover body pressing", guarantees splicing stability, avoids circuit safety hazard;It does not occupy the internal space of box body, and is suitable for compact installation environment;Simplify mold design, improve unit mold output, reduce manufacturing cost;At the same time, splicing and disassembly operation are convenient, prolong the service life of product, and are suitable for circuit safety protection in the field of two-wheeled electric vehicle.

Description

Technical Field

[0001] This utility model relates to the field of fuse box technology, specifically a modular fuse box for installing fuses. Background Technology

[0002] In the field of two-wheeled electric vehicles, fuses, as key components ensuring circuit safety, require installation and protection through dedicated fuse boxes to prevent them from being affected by external impacts, dust intrusion, or humidity changes, thus maintaining their circuit protection function. With the increasing integration of circuit systems, single-path fuse protection is no longer sufficient for the needs of complex circuits. Modular fuse boxes, which allow for the interconnection and centralized management of multiple fuse boxes, are gradually becoming core components in the field of circuit safety protection. Through modularity, multiple fuse protection units can be integrated, and the arrangement of fuse boxes can be flexibly adjusted according to the circuit layout, reducing wiring complexity and improving the convenience of circuit maintenance. Currently, existing technologies do not involve splicing structures for modular fuse boxes. However, in the splicing of other boxes that need to be spliced, as well as circuit breaker housings, the conventional design concept for the sliding groove and sliding strip of a conventional box is as follows: a sliding groove is set on the body of one fuse box, and a second connecting part (i.e., sliding strip) that matches the sliding groove is set on the body of another fuse box. The initial splicing of the two fuse boxes is achieved by sliding the second connecting part along the sliding groove. After the connection, a locking mechanism that can prevent the two from sliding relative to each other is often required, such as the splicing circuit breaker disclosed in application number CN2021220161035. To address the issue of insufficient splicing stability, existing technologies typically add an additional locking mechanism to the fuse box. This could involve using elastic clips within a slide groove, creating a slot on the second connection, or securing the splicing position with screws or locating pins. However, this addition of a locking mechanism presents several drawbacks: Firstly, given the small size of the fuse box, the additional locking mechanism increases its overall size, hindering installation in compact circuit layouts. Secondly, fuse boxes are often manufactured using injection molding, and complex locking mechanisms require additional mold designs for sliders, angled ejectors, and core-pulling mechanisms. This not only increases the design complexity and manufacturing cost of the mold but may also increase the product defect rate due to the high precision requirements of the locking mechanism. Furthermore, once the locking mechanism is engaged, disassembly is often difficult. For example, in structures where elastic protrusions are added for connection after splicing, repeated disassembly can cause these protrusions to break, leading to difficult assembly and disassembly, increased vulnerability, and reduced lifespan. More importantly, the presence of a locking mechanism significantly reduces the unit output of the mold. Since the size of the fuse box is usually designed according to the standard fuse specifications, the mold size needs to be balanced with production efficiency. For example, in a standard 400mm×400mm injection mold, when producing ordinary modular fuse boxes without a locking mechanism, 16 molding cavities can be arranged in the mold to achieve the simultaneous production of 16 fuse boxes; however, after adding a locking mechanism, each cavity needs to reserve additional molding space for the locking structure, and the number of cavities that can be arranged in the mold is often reduced to 8. The output per unit of mold is directly halved, which not only reduces production efficiency but also further increases the unit production cost of the fuse box. Therefore, in the field of modular fuse boxes for installing fuses, how to achieve stable and reliable splicing between fuse boxes without changing the basic mating structure of the slide and the second connecting part (slide bar) or adding an extra locking mechanism, so as to meet the high requirements of circuit safety for splicing stability, avoid squeezing the internal space, simplify mold design, and reduce production costs, has become a core technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0003] In view of the shortcomings of the prior art, the present invention provides a modular safety box for installing safety plates.

[0004] The technical solution adopted by this utility model is: a modular safety box for installing safety chips, including a box body and a cover that covers the box body. A first connecting part is provided on one side of the box body, and a sliding groove is provided on the first connecting part. A second connecting part is provided on the other side of the box body, and the second connecting part is configured to slide in cooperation with a sliding groove on another box body. A limiting step is provided on the box body above the second connecting part. The limiting step is configured to prevent the other box body after splicing from sliding down. When the lid of the box body is closed, the lid of the box body is configured to press against the upper part of the second connecting part on the other box body, thereby preventing the other box body after splicing from slipping upward.

[0005] Furthermore, the upper end of the box body has a cover step that is adapted to the cover body, the slide groove is provided along the length direction of the first connecting part, and the slide groove extends to the upper surface of the cover step.

[0006] Furthermore, one end of the second connecting portion extends to the upper surface of the cover step and is flush with the upper surface of the cover step.

[0007] Furthermore, after the box body is spliced ​​with another box body, the lower surface of the limiting step can abut against the upper end surface of the first connecting part of the other box body, thereby preventing the spliced ​​box body from sliding down.

[0008] Furthermore, the limiting step is part of the cover step.

[0009] Furthermore, the cover is hinged to the box body via a hinge joint, the cover is provided with an elastic buckle, the box body is provided with a buckling step that engages with the elastic buckle, and the buckling step is provided with a guide slope.

[0010] Furthermore, the inner walls on both sides of the slide groove are provided with mating concave surfaces, and the two sides of the second connecting part are provided with mating protrusions that slide with the aforementioned mating concave surfaces. A slot is provided in the middle of the second connecting part, and the slot extends through the second connecting part along its length.

[0011] Furthermore, the housing body is provided with a use slot and a spare slot for installing a fuse. The bottom of the use slot is provided with a terminal block for electrical connection with the fuse. The terminal block includes a wire wrapping part for connecting to a wire and a plug-in part for plugging into the terminal block.

[0012] Furthermore, the upper end of the plug portion has two integrally formed bent spring pieces on both sides. The bent spring pieces have a vertical piece connected to the plug portion, a curved piece connected to the vertical piece, and a "V"-shaped piece connected to the curved piece. A connecting groove for the terminal insertion connection of the safety piece is formed between the "V"-shaped pieces of the two bent spring pieces.

[0013] The beneficial effects of this utility model are: I. Ensuring Splicing Stability: This application establishes a dual anti-detachment structure of "lower limit and upper clamping" by setting a limiting step on the main body of the box above the second connecting part and by using the closed cover to press against the second connecting part of another box body. The limiting step directly prevents the fuse box from sliding downwards after splicing, while the closed cover restricts the upward displacement of the fuse box, completely avoiding the relative sliding problem caused by the gap between the slider and the groove in the prior art. This structure is suitable for the use of fuse boxes as circuit safety components. Even during equipment vibration (such as the bumps of a car) or routine maintenance operations, it can ensure that the spliced ​​fuse box maintains a stable connection, effectively preventing safety hazards such as poor contact between the fuse and the terminal block, circuit breakage, or overheating caused by loose splicing, and ensuring the stable operation of the circuit system. 2. Does not occupy internal space, ensuring fuse compatibility and installation flexibility: Unlike existing technologies that require additional locking mechanisms such as elastic buckles and screws, the anti-detachment structure of this application relies entirely on the limiting steps and cover of the box body itself. There is no need to add an additional locking mechanism or increase the overall volume of the fuse box due to the addition of a structure. It can better adapt to compact installation environments and improve the applicability of the fuse box in diverse circuit layouts. Third, simplified mold design and reduced manufacturing costs: Since this application does not require an additional locking mechanism, the corresponding injection mold does not need auxiliary components such as sliders, angled ejectors, or core pullers for forming buckles, slots, and other structures, significantly reducing the design complexity and processing difficulty of the mold. At the same time, by eliminating the locking mechanism, the space required for the molding cavity of each safety box is significantly reduced—within the same size mold (e.g., 400mm×400mm), the number of cavities can be restored or increased (e.g., from 8 to 16), doubling the single-batch production output of a unit mold. This not only shortens the production cycle but also reduces the mold amortization cost and the manufacturing cost per unit product, providing favorable conditions for large-scale production.

[0014] IV. Simple Structure, Enhanced Ease of Use: The splicing structure of this application only requires the sliding engagement of the groove and the second connecting part to complete the initial splicing, eliminating the need for subsequent operation of additional locking components. The top side is simultaneously pressed during the closing process, making the operation simple and efficient, reducing the difficulty of splicing for users. At the same time, the design without a complex locking mechanism reduces the number of vulnerable parts in the safety box, extending the product's lifespan, reducing later maintenance costs, and further enhancing the user experience. More importantly, disassembly is very convenient; simply opening the cover is sufficient. This ease of disassembly is particularly advantageous in confined installation spaces such as those found in two-wheeled vehicles.

[0015] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The utility model will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a structural schematic diagram from another perspective of the present invention.

[0018] Figure 3 This is a schematic diagram of the two boxes after being joined together.

[0019] Figure 4 This is a schematic diagram showing the two boxes joined together after the lid is opened.

[0020] Figure 5A schematic diagram of the two box bodies after being joined together.

[0021] Figure 6 This is a schematic diagram of the cross-section after the two boxes are joined together.

[0022] Figure 7 This is a schematic diagram of the terminal block structure.

[0023] Figure 8 This is a cross-sectional schematic diagram of the box body.

[0024] Figure 1-8 In the middle: 1. Box body; 2. Cover; 3. First connecting part; 4. Slide groove; 5. Second connecting part; 6. Limiting step; 8. Covering step; 9. Hinge part; 10. Elastic buckle; 11. Buckling step; 12. Guide slope; 13. Mating concave surface; 14. Mating convex part; 15. Slot; 16. Usage slot; 17. Spare slot; 18. Wiring terminal; 19. Wire wrapping part; 20. Plug-in part; 21. Vertical piece; 22. Bending piece; 23. "V" shaped piece; 24. Connecting slot; 25. Safety piece. Detailed Implementation

[0025] 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.

[0026] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0027] This utility model provides a modular fuse box for installing fuse chips.

[0028] In this embodiment, refer to Figure 1-8 The modular fuse box for installing fuses includes a box body 1 and a cover 2 that covers the box body 1. A first connecting part 3 is provided on one side of the box body 1, and a sliding groove 4 is provided on the first connecting part 3. A second connecting part 5 is provided on the other side of the box body, and the second connecting part 5 is configured to slide in conjunction with the sliding groove 4 on another box body. A limiting step 6 is provided on the box body above the second connecting part 5. The limiting step 6 is configured to prevent the other box body after splicing from sliding down. When the lid 2 of the box body is closed, the lid 2 of the box body 1 is configured to press against the second connecting part 5 on the other box body, thereby preventing the other box body after splicing from slipping upward.

[0029] In the above technical solution, a sliding groove is provided on the first connecting part on one side of the box body, and the second connecting part on the other side forms a sliding fit with the sliding groove of the other box body. The initial assembly of the two boxes is completed by sliding the second connecting part along the sliding groove. On the one hand, the limiting step above the second connecting part forms a downward obstruction with the corresponding structure of the other box body (the upper end face of the first connecting part) after splicing, restricting the spliced ​​box body from sliding down. On the other hand, when the lid of the box body is closed, the lid covers and presses against the upper part of the second connecting part of the other box body, forming an upward constraint, preventing the spliced ​​box body from moving upward, and realizing an anti-detachment system without additional locking mechanism.

[0030] By abandoning complex locking components such as elastic buckles and screws found in existing technologies, this design relies on the box's own structure and the cover to achieve anti-detachment, reducing structural complexity and solving the relative sliding problem caused by the cooperation of the sliding groove and the sliding strip. It maintains stable assembly even in vibrating environments. Furthermore, since no additional locking mechanism is required, the corresponding injection mold does not need auxiliary components such as sliders, angled ejectors, or core pullers for molding buckles, grooves, or other structures. This significantly reduces mold design complexity and processing difficulty, lowers production costs, and improves production efficiency.

[0031] Specifically, the upper end of the box body has a cover step 8 that is adapted to the cover body, the slide groove is provided along the length direction of the first connecting part, and the slide groove extends to the upper surface of the cover step.

[0032] In this embodiment, the groove is formed along the length of the first connecting part and extends to the upper surface of the cover step, so that the coverage of the groove extends through the first connecting part and the cover step. When the second connecting part of another box slides in, it can extend to the cover step area, forming a more comprehensive upward pressing fit with the subsequent cover. The structural layout is reasonable. The upper end of the box body is provided with a cover step, which matches the shape and size of the cover, providing a precise cover positioning reference for the cover and ensuring that the cover and the box body fit tightly together.

[0033] Specifically, one end of the second connecting portion extends to the upper surface of the cover step and is flush with the upper surface of the cover step.

[0034] In this embodiment, one end of the second connecting part extends to the upper surface of the cover step, and the upper surface of the extending end is flush with the upper surface of the cover step, so that the second connecting part and the cover step form a continuous planar structure without any height difference.

[0035] Specifically, after the box body is spliced ​​with another box body, the lower surface of the limiting step can abut against the upper end surface of the first connecting part of the other box body, thereby preventing the spliced ​​box body from sliding down.

[0036] In this embodiment, when the two box bodies are spliced ​​together, the lower surface of the limiting step of the first box body and the upper surface of the first connecting part of the second box body form a rigid contact. The surface-to-surface contact prevents the first box body from sliding downward along the groove, providing a clear limiting support for downward displacement. The rigid contact forms a clear displacement stop point, precisely limiting the downward sliding of the box body and avoiding splicing loosening due to unclear limiting, further improving splicing stability.

[0037] Specifically, the limiting step is part of the cover step.

[0038] In this embodiment, the limiting step is not an independently added component, but is formed directly from a portion of the upper end of the box body's cover step. That is, a section of the cover step simultaneously serves the dual functions of cover positioning and downward limiting. This dual-purpose design reduces the number of independent components in the box body, simplifies the mold forming structure, reduces the difficulty of injection molding, increases the production output per mold, and improves production efficiency.

[0039] Specifically, the cover is hinged to the box body via a hinge 9, the cover is provided with an elastic buckle 10, the box body is provided with a fastening step 11 that engages with the elastic buckle 10, and the fastening step is provided with a guide slope 12.

[0040] In this embodiment, the cover is hinged to the box body via a hinge joint, enabling the cover to open and close in a flip-type manner and preventing the cover from being disassembled and lost. The cover is provided with an elastic buckle, and the box body is provided with a fastening step. When the cover is closed, the elastic buckle is compressed and deformed. After fastening, it elastically resets and locks into the fastening step, thus locking the cover. The fastening step is provided with a guide slope, which guides the elastic buckle to slide smoothly into the fastening position when the cover is closed, reducing assembly resistance.

[0041] Specifically, the inner walls of both sides of the slide groove are provided with mating concave surfaces 13, the two sides of the second connecting part are provided with mating protrusions 14 that slide with the mating concave surfaces 13, and the middle of the second connecting part is provided with a slot 15, which is provided through the second connecting part along its length.

[0042] In this embodiment, the slide groove has mating concave surfaces on both sides, and the second connecting part has mating convex surfaces on both sides. The convex surfaces slide against the concave surfaces to form a lateral positioning, preventing the two boxes from shifting perpendicular to the slide groove after splicing. The second connecting part has a through slot in the middle along its length, which reduces the amount of material used without significantly reducing the structural strength, and provides a certain elastic deformation space for the second connecting part. The elastic deformation space can buffer slight deviations during splicing, avoid structural jamming or damage, and improve the assembly fault tolerance rate.

[0043] Specifically, the housing body is provided with a use slot 16 and a spare slot 17 for installing fuses. The bottom of the use slot is provided with a terminal block 18 for electrical connection with the fuse 25. The terminal block 18 includes a wire wrapping part 19 for connecting to a wire and a plug-in part 20 for plugging into the terminal of the fuse.

[0044] In this embodiment, the housing is provided with a usage slot (for installing the fuse currently in use) and a spare slot (for storing spare fuses), enabling classified management of the fuses. Dedicated terminals ensure a stable electrical connection between the wires and the fuses, avoiding poor contact caused by direct tangling of the wires, reducing the risk of circuit failure. Simultaneously, the wire wrapping secures the wires, preventing loosening of the connection due to wire pulling.

[0045] Specifically, the upper end of the plug-in portion has two integrally formed bent spring pieces on both sides. The bent spring pieces have a vertical piece 21 connected to the plug-in portion, a curved piece 22 connected to the vertical piece 21, and a "V"-shaped piece 23 connected to the curved piece. A connecting groove 24 for the terminal insertion connection of the safety piece is formed between the "V"-shaped pieces 23 of the two bent spring pieces.

[0046] In this embodiment, the upper end of the plug-in portion has integrally formed bent spring pieces on both sides. The bent spring pieces are composed of vertical pieces (connected to the main body of the plug-in portion), bent pieces (transition connection), and "V"-shaped pieces (contact end). A connecting groove is formed between the two "V"-shaped pieces. When the fuse terminal is inserted into the connecting groove, the "V"-shaped pieces are squeezed to generate elastic clamping force, which tightly clamps the fuse terminal, improves the connection effect and connection stability with the fuse, and improves the fit tolerance.

[0047] The assembly and disassembly method of this application includes the following steps: A first box body and a second box body are provided, the box body being the aforementioned safe box; S1: Provide a first box body and a second box body, wherein the box body is the modular fuse box for installing fuses; S2: Align the second connecting part of the first box body with the groove on the first connecting part of the second box body; S3: Move the first box body along the extension direction of the slide groove, so that the second connecting part of the first box body slides into the slide groove of the second box body until the limiting step of the first box body abuts against the upper end of the first connecting part of the second box body, thereby restricting the first box body from continuing to slide downward. S4: Close the lid of the second box body, pressing the lid against the second connecting part of the first box body, thereby preventing the first box body from slipping upwards and achieving a stable splicing and locking between the two boxes.

[0048] S5: During disassembly, open the cover of the second box body so that the cover is no longer pressed against the second connecting part of the first box body, thereby releasing the restriction on the upward sliding of the first box body; move the first box body in the opposite direction to the extension direction of the slide groove so that its second connecting part slides in the opposite direction within the slide groove of the second box body; continue to move the first box body until its second connecting part completely slides out of the slide groove of the second box body, thereby achieving the separation of the two box bodies.

[0049] The advantages of the above assembly and disassembly methods are: The operation steps are simple, requiring no additional tools for assembly and disassembly, making it suitable for the convenient use of fuse boxes, especially in confined spaces. During assembly, a sliding fit and pressing against the cover achieve a secure lock, ensuring circuit safety; assembly is quick and easy. Disassembly simply requires opening the cover and sliding it in the opposite direction to separate; the operation logic is consistent and easy for users to master. The entire process relies on the fuse box's own structure, without complex locking mechanisms, avoiding component damage, improving assembly and disassembly efficiency and product lifespan, while also being compatible with the structure of fuse boxes produced on a large scale.

[0050] Based on its structural features, it can assemble two boxes, and naturally, it can also form a one-dimensional linear array by sequentially sliding and splicing multiple box bodies. Among them, apart from the first and last box bodies, each middle box body cooperates with the second connecting part of the previous box body through the first connecting part on one side, and cooperates with the first connecting part of the next box body through the second connecting part on the other side. By sequentially closing the lids of all box bodies and pressing the second connecting parts of the adjacent box bodies with each lid, the entire linear array is synchronously locked.

[0051] Attention all technical personnel: Although this utility model has been described according to the specific embodiments above, the concept of this utility model is not limited to this utility model. Any modification that utilizes the concept of this utility model will be included within the scope of protection of this patent right.

Claims

1. A modular fuse box for installing fuses, comprising a box body and a cover that fits onto the box body, characterized in that: A first connecting part is provided on one side of the box body, and a sliding groove is provided on the first connecting part; A second connecting part is provided on the other side of the box body, and the second connecting part is configured to slide in cooperation with a sliding groove on another box body. A limiting step is provided on the box body above the second connecting part. The limiting step is configured to prevent the other box body after splicing from sliding down. When the lid of the box body is closed, the lid of the box body is configured to press against the upper part of the second connecting part on the other box body, thereby preventing the other box body after splicing from slipping upward.

2. The modular fuse box for installing fuses according to claim 1, characterized in that: The upper end of the box body has a cover step that is adapted to the cover body. The slide groove is provided along the length direction of the first connecting part and extends to the upper surface of the cover step.

3. The modular fuse box for installing fuses according to claim 2, characterized in that: One end of the second connecting part extends to the upper surface of the cover step and is flush with the upper surface of the cover step.

4. The modular fuse box for installing fuses according to claim 2, characterized in that: After the box body is spliced ​​with another box body, the lower surface of the limiting step can abut against the upper end surface of the first connecting part of the other box body, thereby preventing the spliced ​​box body from sliding down.

5. The modular fuse box for installing fuses according to claim 4, characterized in that: The limiting step is part of the cover step.

6. The modular fuse box for installing fuses according to claim 1, characterized in that: The cover is hinged to the box body via a hinge joint. The cover is provided with an elastic buckle, and the box body is provided with a buckling step that engages with the elastic buckle. The buckling step is provided with a guide slope.

7. The modular fuse box for installing fuses according to claim 1, characterized in that: The inner walls of both sides of the slide groove are provided with mating concave surfaces, and the two sides of the second connecting part are provided with mating protrusions that slide with the aforementioned mating concave surfaces. A slot is provided in the middle of the second connecting part, and the slot is provided through the second connecting part along its length.

8. The modular fuse box for installing fuses according to claim 1, characterized in that: The housing body is provided with a use slot and a spare slot for installing fuses. The bottom of the use slot is provided with a terminal block for electrical connection with the fuse. The terminal block includes a wire wrapping part for connecting to a wire and a plug-in part for plugging into the terminal block.

9. The modular fuse box for installing fuses according to claim 8, characterized in that: The upper end of the plug-in portion has two integrally formed bent spring pieces on both sides. The bent spring pieces have a vertical piece connected to the plug-in portion, a curved piece connected to the vertical piece, and a "V" shaped piece connected to the curved piece. A connecting groove for the terminal insertion connection of the safety piece is formed between the "V" shaped pieces of the two bent spring pieces.

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