A type of distribution box

By combining the first and second housings and connecting them with fastening components, the problems of large space occupation and misplacement during the transportation of vertical distribution boxes are solved, achieving efficient transportation and easy installation, and enhancing the stability and strength of the distribution box.

CN224582723UActive Publication Date: 2026-07-31ZHEJIANG STEIN ELECTRIC CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHEJIANG STEIN ELECTRIC CO LTD
Filing Date
2025-08-18
Publication Date
2026-07-31

AI Technical Summary

Technical Problem

Existing vertical distribution boxes take up too much space during transportation and are prone to missing or misplacing brackets, resulting in low transportation efficiency and inconvenient installation.

Method used

The design adopts a combination of a first shell and a second shell, with the first shell housed inside the second shell. This reduces the volume during transportation and allows for stacking and securing at the factory. The connection is made by fastening components to ensure that the quantity and specifications match. The design combines injection-molded nuts made of plastic with reinforcing plates made of metal to improve stability and strength.

Benefits of technology

It improves transportation efficiency, avoids problems of missing or misplaced items, is simple and stable to install, and enhances the overall strength and ease of operation of the distribution box.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses a distribution box, comprising: a first housing having a first chamber, the first chamber housing and fixing a plurality of electrical components; a second housing having a second chamber; in a first state, the first housing is housed in the second chamber; in a second state, the second housing is located below the first housing, the top surface of the second housing being fitted and fixed to the bottom surface of the first housing; the use of the first and second housings forms a one-to-one correspondence, ensuring that the quantity and specifications of the two correspond during the manufacturing process, preventing errors; secondly, during transportation, the first housing is placed entirely into the second housing, reducing the transportation volume and improving transportation efficiency; furthermore, during installation and fixing, the first housing is removed from the second housing and then stacked vertically to form a connected and fixed effect, making operation simple and installation convenient.
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Description

Technical Field

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

[0002] As a product for installing electrical components, the distribution box plays a crucial role in the field of power distribution technology. Circuit breakers, switches, and other electrical components can be installed inside the distribution box.

[0003] Existing distribution boxes come in both vertical and wall-mounted types. Vertical distribution boxes, in particular, require a corresponding metal bracket (located below the distribution box) for support and fixation. The problems with this structure are twofold: firstly, during transportation, the distribution box and bracket are independently installed, with the bracket occupying considerable transport space; secondly, the number of distribution boxes and brackets is a one-to-one correspondence, leading to issues such as missing or incorrect placement (too few brackets or the wrong bracket model may be included at the factory). Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is how to improve transportation efficiency and avoid omissions and misplacements. A distribution box, comprising:

[0005] A first housing, the first housing having a first chamber, the first chamber housing and fixing a plurality of electrical components;

[0006] A second housing, wherein the second housing is provided with a second chamber;

[0007] In the first state, the first housing is housed within the second chamber;

[0008] In the second state, the second housing is located below the first housing, and the top surface of the second housing is attached and fixed to the bottom surface of the first housing.

[0009] It also includes a fastening assembly, wherein the first housing has a first fixing hole and the second housing has a second fixing hole, and the fastening assembly passes through the second fixing hole and is connected and fixed to the first fixing hole.

[0010] The first housing is fixed with a nut, and the first fixing hole mates with the nut.

[0011] The first housing is made of plastic, and the nut is integrally molded with the first housing by injection molding.

[0012] The second fixing hole is a waist-shaped hole.

[0013] The second housing includes a side plate, a top plate, and a reinforcing plate. The side plate is connected to the top plate, and the reinforcing plate connects the side plate and the top plate.

[0014] The first housing has a first through hole, and the second housing has a second through hole. In the second state, the first through hole and the second through hole are connected, and the cable passes through the second through hole and the first through hole to enter the first cavity.

[0015] The first housing includes a body and a first sealing plate. The front side of the body is provided with a front chamber, and the rear side of the body cooperates with the first sealing plate to form a rear chamber. The front chamber and the rear chamber form the first chamber. The first sealing plate is bolted to the body.

[0016] The first housing also includes a second sealing plate, the first sealing plate having an opening, the second sealing plate closing the opening, the rear chamber accommodating a fixing frame, and bolts passing through the second sealing plate, the first sealing plate, and the fixing frame.

[0017] The second casing is made of metal.

[0018] The technical solution of this utility model has the following advantages:

[0019] 1. The distribution box provided by this utility model adopts a one-to-one correspondence between a first shell and a second shell, so that the quantity and specifications of the two are consistent during the manufacturing process and no errors will occur; secondly, during transportation, the first shell is placed entirely into the second shell to form a transportation system, which can reduce the transportation volume and improve transportation efficiency; furthermore, when installing and fixing, the first shell is taken out from the second shell and then stacked on top of each other to form a connection and fixation effect, which is simple to operate and convenient to install.

[0020] 2. The distribution box provided by this utility model has a fastening component that cooperates with the first fixing hole and the second fixing hole to form a connection and fixing effect between the first shell and the second shell.

[0021] 3. The distribution box provided by this utility model is integrally molded by injection molding, which makes the nut more stable and facilitates subsequent installation and fixing.

[0022] 4. The distribution box provided by this utility model has a waist-shaped hole, which can be adjusted in position and is easy to install and fix.

[0023] 5. The distribution box provided by this utility model has a reinforcing plate, which can increase the overall strength of the second shell.

[0024] 6. The present invention provides a distribution box, wherein the front chamber is the panel operation side and the rear chamber is the wiring side, and the first sealing plate is bolted to the main body to form a detachable and fixed effect.

[0025] 7. The distribution box provided by this utility model has a second sealing plate that allows for a small range of disassembly, enabling wiring of the wiring components on the fixed frame.

[0026] 8. The distribution box provided by this utility model has a metal material to ensure the strength of the second shell. It can be made of aluminum alloy or stainless steel. Attached Figure Description

[0027] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0028] Figure 1 A schematic diagram of the structure of a distribution box in the first state provided by this utility model;

[0029] Figure 2 A schematic diagram of the structure of a distribution box in the second state provided by this utility model;

[0030] Figure 3 A cross-sectional view of a distribution box in the second state provided by this utility model;

[0031] Figure 4 for Figure 3 Enlarged view of part A in the middle;

[0032] Figure 5 A bottom view of the first housing provided for this utility model;

[0033] Figure 6 Rear view of the first housing provided for this utility model;

[0034] Figure 7 A cross-sectional view of the first housing provided for this utility model.

[0035] Explanation of reference numerals in the attached figures:

[0036] 11. First housing; 12. Second housing; 14. Fixing frame; 111. First chamber; 112. Electrical component; 113. First fixing hole; 114. First through hole; 115. Body; 116. First sealing plate; 117. Front chamber; 118. Rear chamber; 119. Second sealing plate; 121. Second chamber; 122. Second fixing hole; 123. Side plate; 124. Top plate; 125. Reinforcing plate; 126. Bottom plate; 127. Second through hole; 131. Nut; 141. Wiring assembly. Detailed Implementation

[0037] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0038] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0041] Example 1

[0042] This embodiment provides a distribution box, as shown in the attached figure. Figures 1-7 As shown, it includes:

[0043] The first housing 11 has a first chamber 111, which houses and fixes a plurality of electrical components 112. These electrical components 112 can be circuit breakers, switches, or other components. Those skilled in the art can adjust and select appropriate electrical components 112 for combination according to actual needs.

[0044] The second housing 12 has a second chamber 121.

[0045] In the first state, the first housing 11 is housed in the second chamber 121. Specifically, the first state refers to the transportation state, where the first housing 11 is directly and entirely placed into the second chamber 121, forming the housing effect of the second housing 12.

[0046] In the second state, the second housing 12 is located below the first housing 11, with the top surface of the second housing 12 and the bottom surface of the first housing 11 fitted and fixed together. Specifically, this second state refers to a vertical installation where the first housing 11 is positioned above the second housing 12. In this case, the second housing 12 provides support from below, forming a vertical distribution box. The use of the first housing 11 and the second housing 12 ensures a one-to-one correspondence, guaranteeing that their quantity and specifications match during manufacturing and preventing errors. Furthermore, during transportation, the first housing 11 is placed entirely inside the second housing 12, reducing transport volume and improving efficiency. Finally, during installation, the first housing 11 is removed from the second housing 12, and the two are stacked together for a secure connection. This simple operation and convenient installation make the process easy.

[0047] Specifically, as shown in the attached document Figures 1-5 As shown, it also includes a fastening assembly. The first housing 11 has a first fixing hole 113 located on the bottom surface of the first housing 11. The second housing 12 has a second fixing hole 122 located on the top surface of the second housing 12. In the second state, when the first housing 11 and the second housing 12 are stacked, the first fixing hole 113 corresponds to the second fixing hole 122, and the fastening assembly passes through the second fixing hole 122 and connects and fixes with the first fixing hole 113. The fastening assembly cooperates with the first fixing hole 113 and the second fixing hole 122 to form a connection and fixation effect between the first housing 11 and the second housing 12. The number of the first fixing hole 113 and the second fixing hole 122 can be adjusted according to actual needs. In this embodiment, the fastening assembly can be a screw and nut 131. In addition, the first housing 11 and the second housing 12 can also be fastened by a snap-fit ​​or by riveting.

[0048] Specifically, the first housing 11 is fixed with a nut 131, and the first fixing hole 113 mates with the nut 131. Direct fixing with the nut 131 makes fixing more convenient, and the screw passes through the second fixing hole 122, with the nut 131 mates with the first fixing hole 113.

[0049] Specifically, the first housing 11 is made of plastic, and the nut 131 is integrally injection molded with the first housing 11. This integral injection molding allows the nut 131 to be more stably fixed, facilitating subsequent installation and fixation.

[0050] Specifically, the second fixing hole 122 is an oblong hole. The oblong hole allows for position adjustment, facilitating installation and fixation.

[0051] Specifically, as shown in the attached document Figures 1-3 As shown, the second housing 12 includes a side plate 123, a top plate 124, and a reinforcing plate 125. The side plate 123 is connected to the top plate 124, and the reinforcing plate 125 connects the side plate 123 and the top plate 124. The reinforcing plate 125 increases the overall strength of the second housing 12. Two reinforcing plates 125 are used, each fitting against the side of the top plate 124 and the side of the side plate 123, forming a fixed connection. The cross-sectional shape of the reinforcing plate 125 is a right-angled triangle. In this embodiment, the second housing 12 also includes a bottom plate 126. The upper end of the side plate 123 is connected to the top plate 124, and the lower end of the side plate 123 is connected to the bottom plate 126. The three components together form a U-shaped structure with a horizontal opening. The bottom plate 126 fits against the mounting plane for a fixed effect. Furthermore, expansion bolts can also be used to pass through the bottom plate 126 and connect it to the mounting plane for fixation, thereby improving the fixing strength of the second housing 12.

[0052] Specifically, as shown in the attached document Figures 1-5 As shown, the first housing 11 has a first through hole 114, and the second housing 12 has a second through hole 127. In the second state, the first through hole 114 and the second through hole 127 are connected, and the cable passes through the second through hole 127 and the first through hole 114 into the first chamber 111. A cable connector can be fitted at the interface between the cable and the first through hole 114 and the second through hole 127, and the cable is used for electrical connection between the external power supply circuit and the inside of the distribution box. The diameters of the first through hole 114 and the second through hole 127 can be adjusted according to actual needs.

[0053] Specifically, as shown in the attached document Figures 6-7 As shown, the first housing 11 includes a body 115 and a first sealing plate 116. The front side of the body 115 has a front chamber 117, and the rear side of the body 115, in conjunction with the first sealing plate 116, forms a rear chamber 118. The front chamber 117 and the rear chamber 118 form a first chamber 111. The first sealing plate 116 is bolted to the body 115. The front chamber 117 is the panel operation side, and the rear chamber 118 is the wiring side. The bolted connection between the first sealing plate 116 and the body 115 creates a detachable and fixed effect. In this embodiment, the body 115 and the nut 131 are integrally injection molded, and the first sealing plate 116 forms a closed effect.

[0054] Specifically, as shown in the attached document Figures 6-7As shown, the first housing 11 also includes a second sealing plate 119. The first sealing plate 116 has an opening, and the second sealing plate 119 closes the opening. The rear chamber 118 accommodates a fixing frame 14. Bolts pass through the second sealing plate 119, the first sealing plate 116, and connect to the fixing frame 14. The second sealing plate 119 allows for a small range of disassembly, enabling wiring of the wiring assembly 141 on the fixing frame 14. The wiring assembly 141 is also fixed on the fixing frame 14 to achieve a wiring effect. When partial maintenance is required, the second sealing plate 119 can be opened to enable maintenance. The wiring assembly 141 and the fixing frame 14 form a modular installation structure, making installation more convenient. The fixing frame 14 also includes a guide rail, and the wiring assembly 141 is fixed to the guide rail.

[0055] Specifically, the second housing 12 is made of metal. The metal material ensures the strength of the second housing 12; it can be aluminum alloy or stainless steel. The second housing 12 can be formed by bending sheet metal or by welding metal parts of different shapes and structures. Those skilled in the art can adjust the processing method of the second housing 12 according to actual needs to improve its strength.

[0056] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A distribution box, characterized in that, include: A first housing (11) is provided with a first chamber (111), and the first chamber (111) houses and fixes a plurality of electrical components (112); The second housing (12) is provided with a second chamber (121); In the first state, the first housing (11) is housed in the second chamber (121); In the second state, the second housing (12) is located below the first housing (11), and the top surface of the second housing (12) is attached and fixed to the bottom surface of the first housing (11).

2. The electrical distribution box of claim 1, wherein, It also includes a fastening assembly. The first housing (11) is provided with a first fixing hole (113), and the second housing (12) is provided with a second fixing hole (122). The fastening assembly passes through the second fixing hole (122) and is connected and fixed to the first fixing hole (113).

3. The electrical distribution box of claim 2, wherein, The first housing (11) is fixed with a nut (131), and the first fixing hole (113) is engaged with the nut (131).

4. The electrical distribution box of claim 3, wherein, The first housing (11) is made of plastic, and the nut (131) is integrally molded with the first housing (11) by injection molding.

5. The electrical distribution box of claim 2, wherein, The second fixing hole (122) is a waist-shaped hole.

6. The electrical distribution box of claim 1, wherein, The second housing (12) includes a side plate (123), a top plate (124), and a reinforcing plate (125). The side plate (123) is connected to the top plate (124), and the reinforcing plate (125) connects the side plate (123) and the top plate (124).

7. The electrical distribution box of claim 1, wherein, The first housing (11) is provided with a first through hole (114), and the second housing (12) is provided with a second through hole (127). In the second state, the first through hole (114) and the second through hole (127) are connected, and the cable passes through the second through hole (127) and the first through hole (114) to enter the first chamber (111).

8. The electrical distribution box of claim 1, wherein, The first housing (11) includes a body (115) and a first sealing plate (116). The front side of the body (115) is provided with a front chamber (117). The rear side of the body (115) cooperates with the first sealing plate (116) to form a rear chamber (118). The front chamber (117) and the rear chamber (118) form the first chamber (111). The first sealing plate (116) is bolted to the body (115).

9. The electrical distribution box of claim 8, wherein, The first housing (11) further includes a second sealing plate (119), the first sealing plate (116) has an opening, the second sealing plate (119) closes the opening, the rear chamber (118) accommodates a fixing frame (14), and bolts pass through the second sealing plate (119), the first sealing plate (116) and the fixing frame (14) for connection.

10. The electrical distribution box of claim 1, wherein, The second housing (12) is made of metal.