Splicing type electrical junction box
By using modularly designed splicing electrical junction boxes, which incorporate components such as limit slots, sealing plates, and contact rings, the problem of junction boxes being unable to adapt to cables of different sizes is solved, achieving flexible adaptation and high versatility.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-14
- Publication Date
- 2026-03-24
AI Technical Summary
Existing junction boxes cannot accommodate cables of different sizes, resulting in limited use and poor practicality.
It adopts a modular design, including a lower box and an upper box. Through components such as limiting grooves, sealing plates, and contact rings, the size and number of fixing grooves can be flexibly adjusted to adapt to cables of different sizes.
It enables flexible adaptation to cables of different sizes, improves the versatility and structural flexibility of the junction box, and avoids the limitations of traditional junction boxes.
Smart Images

Figure CN224037012U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electrical equipment technology, and more specifically, to a modular electrical junction box. Background Technology
[0002] A junction box is an electrical component used to connect two or more cables, wires, or power lines, bringing them together in one place for easy maintenance and management. Junction boxes typically consist of one or more terminals, plugs, or sockets through which different cables or wires are connected. Junction boxes are usually enclosed in a housing to protect their internal components from physical damage and contamination.
[0003] The existing publicly available technology, application number CN202323515284.1, describes a splicing electrical junction box. By setting up a box body assembly, it can protect and fix the circuit module, thus playing a sealing role. By setting up a snap-fit assembly, specifically, the cable is snapped and fixed by a first fixing ring and a second fixing ring. By rotating the external threaded post, the external threaded post is connected to the snap-fit seat, and the cable is squeezed and fixed by the thread, thus playing a role in preventing the cable from falling off.
[0004] However, the aforementioned patent still has certain drawbacks in use: the size of the holes used for cable fixing and passage is fixed and cannot be adjusted. When faced with cables of different sizes, it cannot be well adapted. Moreover, most common junction boxes on the market use pre-drilled holes or on-site drilling, which means that the junction box can only be adapted to cables of the corresponding size. It cannot be adjusted or reused later, and its overall practicality is not very good, with certain usage defects.
[0005] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content
[0006] (a) Technical problems to be solved
[0007] To address the shortcomings of existing technologies, this utility model provides a modular electrical junction box, which has the advantages of strong versatility, diverse wiring types, and flexible structure, thereby solving the problems mentioned in the background technology.
[0008] (II) Technical Solution
[0009] To achieve the aforementioned advantages of strong versatility, diverse wiring types, and flexible structure, the specific technical solution adopted by this utility model is as follows:
[0010] A modular electrical junction box includes a lower box and an upper box. The upper box is fixed to the top of the lower box by fastening screws. Limiting grooves are symmetrically formed on both sides of the lower box and both sides of the upper box. A sealing plate is inserted into the limiting groove. A fixing groove is formed on the top of the sealing plate. A terminal block is installed in the middle of the lower box and the middle of the upper box. Several sets of mating grooves are evenly formed on the surface of the terminal block. A slider is inserted into the mating groove. A contact ring is installed on the top of the slider.
[0011] Furthermore, several sets of slots are evenly distributed on the top surface of the lower box.
[0012] Furthermore, several sets of insert blocks are evenly installed at the bottom of the upper box.
[0013] Furthermore, the slot is divided into a rectangular slot and a threaded hole.
[0014] Furthermore, an insulating pad is provided on the surface of the contact ring.
[0015] Furthermore, a sealing ring is adhered to the surface of the fixing groove.
[0016] Furthermore, the contact ring has an arc-shaped structure.
[0017] (III) Beneficial Effects
[0018] Compared with the prior art, this utility model provides a modular electrical junction box, which has the following advantages:
[0019] This utility model employs sealing plates and contact rings. When using the junction box, personnel can select appropriate sizes of sealing plates and contact rings based on the dimensions of the cables to be connected. This changes the size and number of fixing slots formed by the two sets of sealing plates, thus adapting to different cable sizes. Similarly, the number and size of contact rings can be selected appropriately to fix and protect cables of different sizes after connection. Due to the modular and detachable structure, flexible adjustments and adaptations can be made without damaging the housing, facilitating better use and avoiding the situation where a traditional single box can only accommodate one type of cable. This improves the overall quality of use and has the advantages of strong versatility, diverse wiring types, and flexible structure. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 This is a structural schematic diagram of a modular electrical junction box proposed in this utility model;
[0022] Figure 2 This is a schematic diagram of the internal structure of the upper and lower boxes of this utility model;
[0023] Figure 3 These are schematic diagrams illustrating various embodiments of the sealing plate of this utility model;
[0024] Figure 4 These are schematic diagrams illustrating various embodiments of the contact ring of this utility model.
[0025] In the picture:
[0026] 1. Lower housing; 2. Terminal block; 3. Connecting groove; 4. Slider; 5. Limiting groove; 6. Contact ring; 7. Upper housing; 8. Fastening screw; 9. Sealing plate; 10. Fixing groove; 11. Insert block; 12. Slot. Detailed Implementation
[0027] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.
[0028] According to an embodiment of the present invention, a modular electrical junction box is provided.
[0029] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figures 1-4As shown, a splicing electrical junction box according to an embodiment of the present invention includes a lower box body 1 and an upper box body 7. The upper box body 7 is fixed to the top of the lower box body 1 by fastening screws 8. Limiting grooves 5 are symmetrically opened on both sides of the lower box body 1 and both sides of the upper box body 7. A sealing plate 9 is inserted into the limiting groove 5. A fixing groove 10 is opened at the top of the sealing plate 9. A terminal block 2 is installed in the middle of the lower box body 1 and the middle of the upper box body 7. Several sets of docking grooves 3 are evenly opened on the surface of the terminal block 2. A slider 4 is inserted into the docking groove 3. A contact ring 6 is installed at the top of the slider 4. The structure of the contact ring 6, the height of the slider 4, and the number and size of the fixing grooves 10 can all be produced in various ways during the production stage. This allows these structures to be flexibly matched and used in subsequent applications without damaging the shell structure, thus enriching the applicable types of the structure and improving its versatility, making it easier to use.
[0030] In one embodiment, a number of slots 12 are evenly distributed on the top surface of the lower box 1.
[0031] In one embodiment, several sets of insert blocks 11 are evenly installed at the bottom of the upper box 7.
[0032] In one embodiment, the slot 12 is divided into a rectangular slot and a threaded hole. The rectangular slot is designed to be used in conjunction with the insert block 11, and the threaded hole is designed to assist in the use of the fastening screw 8. The two sets of boxes are spliced and fixed through the threaded connection to ensure the stability of use.
[0033] In one embodiment, an insulating pad is provided on the surface of the contact ring 6. The insulating pad is provided to ensure the insulation effect at the cable connection and avoid the risk of leakage.
[0034] In one embodiment, a sealing ring is adhered to the surface of the fixing groove 10. The sealing ring can prevent the cable from directly contacting the surface of the sealing plate 9 and causing scratches. On the other hand, it can enhance the sealing performance after connection and reduce the probability of dust and other impurities entering, thereby protecting the internal circuitry.
[0035] In one embodiment, the contact ring 6 has an arc-shaped structure. The arc-shaped structure is designed to better fit the surface of the cable, thereby squeezing and fixing the cable, ensuring the stability of the cable connection, and thus ensuring the safety of the cable.
[0036] Working Principle: In actual use, personnel can select the appropriate sealing plate 9 according to the size of the cable to be connected. Since the fixing grooves 10 on the surfaces of different sealing plates 9 are of different sizes, the through-hole sizes constructed when two sets of sealing plates 9 are aligned are also different. Therefore, different cables can be passed through and fixed accordingly. After selecting the sealing plate 9, a suitable contact ring 6 can be selected. The contact ring 6 adopts an arc-shaped structure and varies in size. Therefore, when a suitable contact ring 6 is selected, the connection point of the cable after wiring can be squeezed and fixed, thereby preventing the cable from falling off and ensuring subsequent use. After selection, the sealing plate 9 can be inserted into the corresponding limiting groove 5, and then the contact ring 6 can be inserted into the mating groove 3 on the corresponding terminal block 2 via the bottom slider 4, thus realizing the assembly of the structure. During installation, the operator can pass the cable through the fixing groove 10 and place it on the contact ring 6 after connection. Then, the upper box 7 can be inserted into the slot 12 at the top of the lower box 1 through the bottom plug 11, thus achieving the splicing operation of the upper box 7 and the lower box 1. Then, turning the fastening screw 8 will lock the two boxes together, ensuring the stability of subsequent use. Due to the modular and adjustable design of the structure, the entire junction box can be flexibly adjusted and used. The box can be adapted to the use of different cables by changing the internal structure, improving the versatility of the structure and effectively expanding its application range, making it easier to use. Moreover, the adjustable design of the structure allows for flexible adjustments without damaging the external structure, effectively improving the adaptability of the structure. The device as a whole has the advantages of strong versatility, diverse wiring types, and flexible structure.
[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., 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 connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A modular electrical junction box, comprising a lower box body (1) and an upper box body (7), characterized in that, The upper box (7) is fixed to the top of the lower box (1) by fastening screws (8). Limiting grooves (5) are symmetrically opened on both sides of the lower box (1) and both sides of the upper box (7). A sealing plate (9) is inserted into the limiting groove (5). A fixing groove (10) is opened at the top of the sealing plate (9). A terminal block (2) is installed in the middle of the lower box (1) and the middle of the upper box (7). Several sets of docking grooves (3) are evenly opened on the surface of the terminal block (2). A slider (4) is inserted into the docking groove (3). A contact ring (6) is installed at the top of the slider (4).
2. The modular electrical junction box according to claim 1, characterized in that, The lower box (1) has several sets of slots (12) evenly distributed on its top surface.
3. The modular electrical junction box according to claim 1, characterized in that, Several sets of inserts (11) are evenly installed at the bottom of the upper box (7).
4. A modular electrical junction box according to claim 2, characterized in that, The slot (12) is divided into a rectangular slot and a threaded hole.
5. A modular electrical junction box according to claim 1, characterized in that, An insulating pad is provided on the surface of the contact ring (6).
6. A modular electrical junction box according to claim 1, characterized in that, A sealing ring is adhered to the surface of the fixing groove (10).
7. A modular electrical junction box according to claim 1, characterized in that, The contact ring (6) has an arc-shaped structure.
Citation Information
Patent Citations
Splicing type electrical junction box
CN222052548U