Modularized drawer type switch cabinet
The modularly designed installation and adjustment mechanism solves the problem of low space utilization in drawer-type switch cabinets, enabling flexible adjustment and fixation of drawer height, and improving the versatility and economy of the switch cabinet.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING ZELICHAO ELECTRICAL EQUIPMENT CO LTD
- Filing Date
- 2025-05-12
- Publication Date
- 2026-04-14
AI Technical Summary
In existing technologies, the installation height of drawer-type switch cabinets is usually a standard modular design, which makes it impossible to fully utilize space or install new components when their dimensions change, increasing costs and time.
The modular installation and adjustment mechanism includes components such as support rods, sleeves, limit rods, and springs. Through the cooperation of dovetail grooves and springs, the drawer height can be flexibly adjusted and fixed to adapt to the needs of components of different sizes.
It enables flexible adjustment of drawer height, optimizes space utilization, reduces upgrade costs, improves versatility and stability, simplifies the installation process, and reduces maintenance costs.
Smart Images

Figure CN224123769U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of switch cabinet technology, and in particular to a modular drawer-type switch cabinet. Background Technology
[0002] The cabinet of the drawer-type switchgear adopts a modular design. Each drawer can be equipped with electrical components such as circuit breakers and contactors. The circuit connection is realized through the bus system. It is equipped with independent instrument room, bus room and cable room to ensure electrical safety isolation. It features compact structure, convenient operation and high safety. It can realize functions such as circuit on and off control, power distribution and motor protection.
[0003] For example, CN209488040U discloses a drawer-type switch cabinet, including a cabinet body. Multiple placement slots are provided inside the cabinet body. A drawer is slidably connected inside each placement slot, and a compression component is provided between the drawer and the side of the placement slot away from the opening. A limit slot is vertically provided on the bottom wall of the placement slot. A guide slot is provided on the lower surface of the drawer. The position of the limit slot corresponds to the position of the guide slot. The cross-section of the guide slot through the center line is T-shaped and a locking device is provided inside. The locking device includes a limit pin and a push component. The bottom of the limit pin cooperates with the limit slot, and a stop is fixedly connected to the top of the limit pin. The stop is located inside the guide slot. A return spring is provided inside the guide slot. One end of the return spring abuts against the top wall of the guide slot, and the other end abuts against the upper surface of the stop. A push hole is provided on the side wall at the bottom of the guide slot away from the compression component, and the push component is located inside the push hole.
[0004] However, in existing technologies, the installation height of drawers in traditional switch cabinets is usually standardized, such as being divided into half-units or single-units based on height. While such designs facilitate production, they may not fully utilize space when new components are smaller, or may be unable to be installed when they are larger. For example, smart circuit breakers are becoming increasingly miniaturized, but the drawers may still be designed according to traditional dimensions, resulting in wasted space. Alternatively, high-power equipment may require more space but cannot be adjusted, requiring the cabinet to be replaced, which increases costs and time. Utility Model Content
[0005] The purpose of this utility model is to solve the problem that the installation height of drawers in the prior art is usually standardized, such as being divided into half units or one unit according to height, and to propose a modular drawer-type switch cabinet.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a modular drawer-type switch cabinet, comprising a switch cabinet body, an installation and adjustment mechanism fixedly connected inside the switch cabinet body, a pull-out slide rail mounted on the side of the installation and adjustment mechanism, a drawer body fixedly connected to the side of the pull-out slide rail, the installation and adjustment mechanism including a support rod, the support rod being fixedly connected to the inside of the switch cabinet body, and a sleeve slidably connected to the surface of the support rod, a dovetail groove provided on the side of the support rod, a connecting frame fixedly connected to the side of the sleeve, a limit rod inserted into the surface of the connecting frame, a dovetail plug fixedly connected to the end of the limit rod, the dovetail plug being located inside the dovetail groove and inserted into the side of the support rod, a second spring provided on the surface of the limit rod, one end of the second spring being fixedly connected to the installation and adjustment mechanism, and the other end of the second spring being fixedly connected to the side of the dovetail plug, an installation component fixedly connected to the side of the sleeve, and the installation component being fixedly connected to the side of the pull-out slide rail.
[0007] Preferably, the sleeve has a through groove on its side, and the dovetail insert is located inside the through groove.
[0008] Preferably, the mounting assembly includes a limiting plate, which is fixedly connected to the side of the sleeve, and a mounting plate is slidably inserted inside the limiting plate.
[0009] Preferably, the side of the mounting plate is fixedly connected to the side of the pull-out slide rail.
[0010] Preferably, a pin is inserted into the upper part of the limiting plate, and a first spring is provided on the surface of the pin. One end of the first spring is fixedly connected to the surface of the pin, and the other end of the first spring is fixedly connected to the limiting plate. The limiting plate is inserted into the mounting plate.
[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0012] 1. In this utility model, the drawer body is pushed up and down according to the height of the mounting components inside the drawer body, causing the sleeve to slide along the support rod. During the sliding process of the sleeve along the support rod, the dovetail insert disengages from the dovetail groove on the surface of the support rod. At this time, the second spring is compressed, and the limiting rod slides along the connecting frame. When the dovetail insert reaches the new dovetail groove position again, the second spring restores its deformation and pushes the dovetail insert to engage with the new dovetail groove on the side of the support rod, thereby limiting the height of the drawer body. This breaks through the traditional fixed module limitation, adapts to miniaturized or large components as needed to optimize space utilization, and the adjustment process is simple and quick. The dovetail engagement and the pre-tightening of the second spring ensure locking stability. At the same time, it is compatible with the renovation of old cabinets to reduce upgrade costs, providing a solution that balances flexibility, reliability and economy for the modular design of switch cabinets.
[0013] 2. In this utility model, a suitable drawer body is selected according to the size requirements of the internal components of the drawer body. The installation plate and the limiting plate on the side of the drawer body are inserted to facilitate the installation of the drawer body. The limiting plate and the installation plate are inserted and fixed by a pin, which facilitates the stable fixation of the drawer body. A suitable drawer body is selected according to the size of the components. The insertion structure allows for quick positioning, and the pin locking ensures a firm connection. It can flexibly adapt to components of different sizes, improving the versatility of the switch cabinet. The insertion installation requires no tools, is convenient to operate, and shortens the installation time. The pin fixing enhances the structural stability and adapts to vibration environments. The detachable design facilitates independent maintenance of the drawer body and reduces maintenance costs. Attached Figure Description
[0014] Figure 1 A three-dimensional structural diagram of a modular drawer-type switch cabinet is provided for this utility model;
[0015] Figure 2 A front view structural diagram of a modular drawer-type switch cabinet is provided for this utility model;
[0016] Figure 3 This utility model provides a three-dimensional cross-sectional view of the limiting plate in a modular drawer-type switch cabinet.
[0017] Figure 4 This utility model presents a front view structural diagram of the bushing in a modular drawer-type switch cabinet.
[0018] Legend: 1. Switch cabinet body; 2. Mounting and adjusting mechanism; 21. Support rod; 22. Sleeve; 23. Limit plate; 24. Mounting plate; 25. Pin; 26. Spring No. 1; 27. Connecting bracket; 28. Limit rod; 29. Spring No. 2; 210. Dovetail insert; 3. Pull-out slide rail; 4. Drawer body. Detailed Implementation
[0019] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0020] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.
[0021] Example 1: As Figures 1-4As shown, this utility model provides a modular drawer-type switch cabinet, including a switch cabinet body 1. An installation and adjustment mechanism 2 is fixedly connected inside the switch cabinet body 1. A pull-out slide rail 3 is installed on the side of the installation and adjustment mechanism 2. A drawer body 4 is fixedly connected to the side of the pull-out slide rail 3. The installation and adjustment mechanism 2 includes a support rod 21, which is fixedly connected to the inside of the switch cabinet body 1. A sleeve 22 is slidably connected to the surface of the support rod 21. A dovetail groove is provided on the side of the support rod 21. A connecting bracket 27 is fixedly connected to the side of the sleeve 22. A limiting rod 28 is inserted into the surface, and a dovetail block 210 is fixedly connected to the end of the limiting rod 28. The dovetail block 210 is located inside the dovetail groove and is inserted into the side of the support rod 21. A second spring 29 is provided on the surface of the limiting rod 28. One end of the second spring 29 is fixedly connected to the installation adjustment mechanism 2, and the other end of the second spring 29 is fixedly connected to the side of the dovetail block 210. An installation component is fixedly connected to the side of the sleeve 22. The installation component is fixedly connected to the side of the pull-out slide rail 3. A through groove is provided on the side of the sleeve 22, and the dovetail block 210 is located inside the through groove.
[0022] The specific settings and functions of this embodiment are described below. Based on the height of the mounting components inside the drawer body 4, the drawer body 4 is pushed up and down, causing the sleeve 22 to slide along the support rod 21. During the sliding process of the sleeve 22 along the support rod 21, the dovetail insert 210 disengages from the dovetail groove on the surface of the support rod 21. At this time, the second spring 29 is compressed, and the limiting rod 28 slides along the connecting frame 27. When the dovetail insert 210 reaches the new dovetail groove position again, the second spring 29 restores its deformation and pushes the dovetail insert 210 to insert into the new dovetail groove on the side of the support rod 21, thereby limiting the height of the drawer body 4 and facilitating the installation of components inside the drawer body 4.
[0023] Breaking through the limitations of traditional fixed modules, it can adapt to miniaturized or large components as needed to optimize space utilization. The adjustment process is simple and quick, and the locking stability is ensured by dovetail engagement and pre-tensioning of spring No. 29. At the same time, it is compatible with the renovation of old cabinets to reduce upgrade costs, providing a solution for the modular design of switch cabinets that takes into account flexibility, reliability and economy.
[0024] Example 2: Figures 1-4 As shown, the mounting assembly includes a limiting plate 23, which is fixedly connected to the side of the sleeve 22. A mounting plate 24 is slidably inserted into the inside of the limiting plate 23. The side of the mounting plate 24 is fixedly connected to the side of the pull-out slide rail 3. A pin 25 is inserted into the upper part of the limiting plate 23. A first spring 26 is provided on the surface of the pin 25. One end of the first spring 26 is fixedly connected to the surface of the pin 25, and the other end of the first spring 26 is fixedly connected to the limiting plate 23. The limiting plate 23 and the mounting plate 24 are inserted into each other.
[0025] The overall effect of this embodiment is that, according to the size requirements of the internal components of the drawer body 4, a suitable drawer body 4 is selected, and the drawer body 4 is installed by inserting the mounting plate 24 on the side of the drawer body 4 into the limiting plate 23. The limiting plate 23 and the mounting plate 24 are inserted and fixed by inserting the pin 25 into the limiting plate 23 and the mounting plate 24, so as to facilitate the stable fixing of the drawer body 4.
[0026] Select the appropriate drawer body 4 according to the component size, and quickly position it through the plug-in structure. The locking pin 25 ensures a firm connection. It can flexibly adapt to components of different sizes, improving the versatility of the switch cabinet. The plug-in installation requires no tools and is easy to operate, shortening the installation time. The fixing pin 25 enhances the structural stability and adapts to vibration environments. The detachable design makes it easy to maintain the drawer body 4 independently, reducing maintenance costs.
[0027] The usage method and working principle of this device are as follows: According to the size requirements of the internal components of the drawer body 4, select a suitable drawer body 4, and connect the mounting plate 24 on the side of the drawer body 4 with the limiting plate 23 to facilitate the installation of the drawer body 4. Connect the limiting plate 23 and the mounting plate 24 with the pin 25 to fix the limiting plate 23 and the mounting plate 24, so as to stabilize the drawer body 4.
[0028] Based on the height of the mounting components inside the drawer body 4, the drawer body 4 is pushed up and down, causing the sleeve 22 to slide along the support rod 21. During the sliding process of the sleeve 22 along the support rod 21, the dovetail insert 210 disengages from the dovetail groove on the surface of the support rod 21. At this time, the second spring 29 is compressed, and the limiting rod 28 slides along the connecting frame 27. When the dovetail insert 210 reaches the new dovetail groove position again, the second spring 29 restores its deformation and pushes the dovetail insert 210 to engage with the new dovetail groove on the side of the support rod 21, thereby limiting the height of the drawer body 4.
[0029] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.
Claims
1. A modular drawer-type switch cabinet, comprising a switch cabinet body (1), an installation and adjustment mechanism (2) fixedly connected inside the switch cabinet body (1), a pull-out slide rail (3) installed on the side of the installation and adjustment mechanism (2), and a drawer body (4) fixedly connected to the side of the pull-out slide rail (3), characterized in that: The installation adjustment mechanism (2) includes a support rod (21), which is fixedly connected to the inside of the switch cabinet body (1). A sleeve (22) is slidably connected to the surface of the support rod (21). A dovetail groove is provided on the side of the support rod (21). A connecting frame (27) is fixedly connected to the side of the sleeve (22). A limit rod (28) is inserted into the surface of the connecting frame (27). A dovetail plug (210) is fixedly connected to the end of the limit rod (28). The dovetail plug (210) is located inside the dovetail groove and inserted into the side of the support rod (21). A second spring (29) is provided on the surface of the limit rod (28). One end of the second spring (29) is fixedly connected to the installation adjustment mechanism (2), and the other end of the second spring (29) is fixedly connected to the side of the dovetail plug (210). An installation component is fixedly connected to the side of the sleeve (22). The installation component is fixedly connected to the side of the pull-out slide rail (3).
2. The modular drawer-type switch cabinet according to claim 1, characterized in that: The sleeve (22) has a through groove on its side, and the dovetail insert (210) is located inside the through groove.
3. A modular drawer-type switch cabinet according to claim 1, characterized in that: The mounting components include a limiting plate (23), which is fixedly connected to the side of the sleeve (22), and a mounting plate (24) is slidably inserted inside the limiting plate (23).
4. A modular drawer-type switch cabinet according to claim 3, characterized in that: The mounting plate (24) is fixedly connected to the side of the pull-out slide rail (3).
5. A modular drawer-type switch cabinet according to claim 3, characterized in that: A pin (25) is inserted into the upper part of the limiting plate (23). A first spring (26) is provided on the surface of the pin (25). One end of the first spring (26) is fixedly connected to the surface of the pin (25), and the other end of the first spring (26) is fixedly connected to the limiting plate (23). The limiting plate (23) is inserted into the mounting plate (24).
Citation Information
Patent Citations
Drawer type switch cabinet
CN209488040U