An assembled distribution box convenient to install
By using a servo motor to drive the lead screw to move the closing plate and with the design of ventilation holes, combined with a cooling fan and protective measures, the sealing and heat dissipation problems of the prefabricated distribution box under harsh weather conditions are solved, achieving convenient installation and efficient protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANJIN HUACHENG TECHNOLOGY CO LTD
- Filing Date
- 2025-06-04
- Publication Date
- 2026-07-21
AI Technical Summary
Existing prefabricated distribution boxes are susceptible to rust and wear from wind and rain when adjusting the rain shield frame, which can lead to unstable transmission, poor sealing, and shortened service life.
A servo motor drives the lead screw to rotate, and the rollers roll in contact with the through groove to move the closed plate. Combined with ventilation holes and a cooling fan, it achieves rapid heat dissipation and protection. Wear-resistant materials and rain shields are used to prevent rainwater and dust from entering.
It improves the ease of installation and service life of the distribution box, ensures sealing and heat dissipation efficiency, prevents rainwater splashing and dust ingress, and adapts to harsh weather environments.
Smart Images

Figure CN224537632U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of distribution box technology, specifically a prefabricated distribution box that is easy to install. Background Technology
[0002] A distribution box is a device used to distribute electrical power. It typically consists of switching equipment, measuring instruments, protective electrical appliances, and auxiliary equipment, and is installed in a closed or semi-closed metal cabinet or panel. It is an important component of low-voltage electrical wiring. Its main functions are to rationally distribute electrical energy, facilitate circuit opening and closing operations, control and protect electrical equipment, visually display the circuit's continuity status, and perform energy metering and monitoring, thereby improving energy utilization efficiency.
[0003] The patent publication number "CN218958330U" discloses "An Assembled Distribution Box," which includes: a base plate for firmly fixing the bottom of the device; a rear baffle located at the center of one side of the top of the base plate and fixedly connected to the center of the same side of the top of the base plate, with a box cover rotatably connected to the center of the other side of the top of the base plate; a mounting plate located on one side of the rear baffle and fixedly connected to the same side of the rear baffle, with a top plate fixedly connected to the top of the rear baffle; a rainproof mechanism located at both ends on the inner side of the top plate; and a heat dissipation and protection mechanism located at both ends at the center of the bottom of the top plate. The advantages of this utility model are: it facilitates the installation of assembled equipment, expands the installation space, is convenient to install, improves the heat dissipation efficiency of the distribution box in hot weather, and allows for easy adjustment of the position of the rainproof frame in rainy weather to protect the equipment inside the distribution box from rain. Adjusting the rainproof frame is also convenient, quick, and saves time and effort.
[0004] The adjusting gear rod engages with the adjusting tooth grooves at both ends to drive the rainproof frame plate, which is placed in an external environment and is susceptible to wind and rain erosion, which can easily lead to rust and wear. If the wear of the tooth grooves on both sides is inconsistent, the transmission will be unstable, which may cause uneven force on both sides, resulting in the rainproof frame plate tilting during lifting and lowering, getting stuck in the adjusting sliding cavity, and affecting the sealing performance.
[0005] Therefore, this utility model provides an easy-to-install prefabricated distribution box to solve the above problems. Utility Model Content
[0006] In view of the shortcomings of the existing technology, this utility model provides an easy-to-install prefabricated distribution box, which solves the above problems.
[0007] To achieve the above objectives, this utility model provides the following technical solution: an easy-to-install prefabricated distribution box, comprising a base, a closing component on the top of the base, and an auxiliary component on the top of the closing component; the closing component includes an outer housing, which is fixedly connected to the top of the base, an inner housing fixedly connected to one side of the inner wall of the outer housing, a support base fixedly connected to the top of the inner wall of the base, the top of the support base being fixedly connected to the bottom of the inner housing, a partition plate fixedly connected between the inner walls of the inner housing, a lead screw rotatably connected to the bottom of the inner wall of the inner housing, a nut rod threadedly connected to the outer wall of the lead screw, a through groove opened inside the side wall of the inner housing, rollers fixedly installed on both sides of the nut rod, the rollers rollingly contacting one side of the through groove, and a closing plate fixedly connected to one end of the nut rod, the closing plate being slidably connected to the inner wall of the outer housing.
[0008] Furthermore, a servo motor is fixedly installed on the top of the inner wall of the inner housing, and the output shaft of the servo motor is fixedly connected to one end of the lead screw.
[0009] The above technical solution is used to provide power to drive the lead screw to rotate.
[0010] Furthermore, an upper grid plate and a lower grid plate are fixedly connected to the inside of the side wall of the outer casing.
[0011] The above technical solution is used to allow air to circulate and dissipate heat.
[0012] Furthermore, the auxiliary component includes a support rod, which is fixedly connected to the top of the outer casing. One end of the support rod is fixedly connected to a rain shield. A cooling fan is fixedly installed on the top of the inner casing, and a dust cover is fixedly connected to the top of the outer casing.
[0013] The above technical solution is used to quickly dissipate heat.
[0014] Furthermore, the support base has a first ventilation hole inside, and the partition plate has a second ventilation hole inside.
[0015] By adopting the above technical solution, gas flow between the outer and inner casings is facilitated.
[0016] Furthermore, a rainproof ring is fixedly connected to the top of the outer casing.
[0017] The above technical solution is used to prevent rainwater from flowing into the cooling fan through the top opening of the outer casing.
[0018] Beneficial effects This utility model provides a prefabricated distribution box that is easy to install. Compared with the prior art, it has the following advantages: 1. This easy-to-install prefabricated distribution box uses a servo motor to drive a lead screw. As the lead screw rotates, the nut rod is restricted by the rolling contact between the rollers and the inner wall of the channel, resulting in linear motion. This causes the closing plate to move downwards, blocking the lower grating plate and preventing rainwater from splashing through it into the outer box when it touches the ground. The upper grating plate, being relatively far from the ground, is less affected by rainwater splashing; a rain cover can be installed on one side of the outer box. The rolling contact between the rollers and the inner wall of the channel replaces the sliding contact, reducing frictional resistance. The closing plate is made of wear-resistant metal with a smooth surface, reducing wear on the inner wall of the outer box and extending its service life. The upper and lower grating plates allow external air to enter, facilitating heat exchange.
[0019] 2. This easy-to-install prefabricated distribution box facilitates air circulation between the outer and inner enclosures through the first and second vents. This allows heat to dissipate quickly by activating the cooling fan, which generates air pressure and creates convection currents between hot and cold air, allowing the accumulated heat inside the outer enclosure to escape through the top opening. The rain shield prevents rainwater from directly entering the cooling fan, the dust cover prevents dust from entering, and the rain ring prevents water from flowing in through the opening of the outer enclosure. 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 description of the embodiments or the prior art 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 from these drawings without creative effort.
[0021] Figure 1 This is a perspective view of the external structure of this utility model; Figure 2 This is a structural diagram of the interior of the outer casing of this utility model and its structure after removing the dust cover; Figure 3 This is a partial top view of the structure of this utility model; Figure 4 This is an enlarged view of the structure at point A of this utility model; Figure 5 This is a partial structural side view of this utility model.
[0022] In the diagram: 1. Base; 2. Closing assembly; 21. Outer housing; 22. Upper grating plate; 23. Lower grating plate; 24. Support base; 25. Inner housing; 26. Partition plate; 27. Servo motor; 28. Lead screw; 29. Nut rod; 210. Roller; 211. Closing plate; 212. Through slot; 3. Auxiliary assembly; 31. Support rod; 32. Rain shield; 33. Dust cover; 34. Rain guard ring; 35. First vent; 36. Second vent; 37. Cooling fan. Detailed Implementation
[0023] It should be noted that in the description of the embodiments of this application, the terms "front," "rear," "left," "right," "up," "down," 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 application 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 application. The terms "installation," "connection," and "linking" 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 direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.
[0024] The present application will be further described in detail below with reference to the accompanying drawings and embodiments.
[0025] Reference Figures 1 to 5 This application provides an easy-to-install prefabricated distribution box, including a base 1, a closing component 2 on the top of the base 1, and an auxiliary component 3 on the top of the closing component 2. The closing component 2 includes an outer housing 21, which is fixedly connected to the top of the base 1. An inner housing 25 is fixedly connected to one side of the inner wall of the outer housing 21. A support base 24 is fixedly connected to the top of the inner wall of the base 1, and the top of the support base 24 is fixedly connected to the bottom of the inner housing 25. A partition 26 is fixedly connected between the inner walls of the inner box 25. A lead screw 28 is rotatably connected to the bottom of the inner wall of the inner box 25. A nut rod 29 is threadedly connected to the outer wall of the lead screw 28. A through groove 212 is opened inside the side wall of the inner box 25. Rollers 210 are fixedly installed on both sides of the nut rod 29, and the rollers 210 roll in contact with one side of the through groove 212. A closing plate 211 is fixedly connected to one end of the nut rod 29, and the closing plate 211 is slidably connected to the inner wall of the outer box 21. A servo motor 27 is fixedly installed on the top of the inner wall of the inner box 25, and the output shaft of the servo motor 27 is fixedly connected to one end of the lead screw 28. An upper grid plate 22 and a lower grid plate 23 are fixedly connected inside the side wall of the outer box 21.
[0026] In specific implementation: the servo motor 27 drives the lead screw 28 to rotate. As the lead screw 28 rotates, the nut rod 29 is restricted by the rolling contact between the roller 210 and the inner wall of the through groove 212, thus performing linear motion. This causes the closing plate 211 to move downwards, blocking the position of the lower grid plate 23, thereby preventing rainwater from splashing through the lower grid plate 23 and entering the outer box 21 when it comes into contact with the ground. The upper grid plate 22 is relatively far from the ground and is less affected by rainwater splashing. A rain cover can be installed on one side of the outer box 21. The rolling contact between the roller 210 and the inner wall of the through groove 212 can replace the sliding contact between the roller 210 and the through groove 212, thereby reducing a certain amount of frictional resistance. The closing plate 211 is made of wear-resistant metal material with a smooth surface, thereby reducing wear with the inner wall of the outer box 21 and increasing service life. The upper grid plate 22 and the lower grid plate 23 are used for the entry of external air to facilitate heat exchange.
[0027] Reference Figures 1 to 5 In one aspect of this embodiment, the auxiliary component 3 includes a support rod 31, which is fixedly connected to the top of the outer casing 21. A rain shield 32 is fixedly connected to one end of the support rod 31. A cooling fan 37 is fixedly installed on the top of the inner casing 25, and a dust cover 33 is fixedly connected to the top of the outer casing 21. A first ventilation hole 35 is provided inside the support base 24, and a second ventilation hole 36 is provided inside the partition 26. A rain shield ring 34 is fixedly connected to the top of the outer casing 21.
[0028] In specific implementation: the first vent 35 and the second vent 36 facilitate air circulation between the outer casing 21 and the inner casing 25, so that after the heat is dissipated, the cooling fan 37 is activated, and the accumulated heat in the outer casing 21 can be dissipated from the top opening of the outer casing 21 through the generation of air pressure and the convection effect of hot and cold air, so as to achieve the purpose of rapid heat dissipation. The rain shield 32 is used to prevent rainwater from directly entering the cooling fan 37, the dust cover 33 is used to prevent dust in the air from entering, and the rain ring 34 can prevent water from flowing in from the opening of the outer casing 21.
[0029] All electrical devices in this plan are powered by an external power source.
[0030] Working principle: When rainy weather is detected, the control system starts the servo motor 27, driving the lead screw 28 to rotate. Due to the threaded engagement between the lead screw 28 and the nut rod 29, and the roller 210 on the nut rod 29 rolling along the inner wall of the through groove 212, the nut rod 29 will move linearly, causing the closing plate 211 to move downwards to the position of the lower grille plate 23 and form a seal. This action effectively prevents rainwater splashes from entering the outer housing 21 through the lower grille plate 23. Because the upper grille plate 22 is higher than the ground, it is less affected by rainwater splashes, and only a rain cover needs to be installed on the side of the outer housing 21. The rolling contact design between the roller 210 and the through groove 212 significantly reduces frictional resistance and improves system response speed and service life compared to traditional sliding structures. The closing plate 211 is made of a special wear-resistant metal material and its surface is precision polished, which not only ensures the seal with the inner wall of the outer box 21, but also reduces wear caused by long-term sliding. In terms of heat dissipation, the upper grille 22 and lower grille 23 form an airflow channel, allowing cool external air to enter the enclosure through the grille. Simultaneously, the design of the first vent 35 and the second vent 36 promotes gas exchange between the outer enclosure 21 and the inner enclosure 25. When the cooling fan 37 is activated, forced convection is created within the enclosure, and hot air is rapidly exhausted through the top opening. The rain shield 32, dust cover 33, and rain ring 34 protect the stable operation of the heat dissipation system from rain, dust, and water accumulation, respectively, ensuring efficient heat dissipation even in harsh environments.
[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0032] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An easy-to-install prefabricated distribution box, comprising a base (1), characterized in that: A closing component (2) is provided on the top of the base (1); an auxiliary component (3) is provided on the top of the closing component (2); the closing component (2) includes an outer housing (21), which is fixedly connected to the top of the base (1), and an inner housing (25) is fixedly connected to one side of the inner wall of the outer housing (21). A support base (24) is fixedly connected to the top of the inner wall of the base (1), and the top of the support base (24) is fixedly connected to the bottom of the inner housing (25). The inner walls of the inner housing (25) are fixedly connected to each other. A partition plate (26) is connected to the inner wall of the inner box (25), and a lead screw (28) is rotatably connected to the bottom of the inner wall. A nut rod (29) is threadedly connected to the outer wall of the lead screw (28). A through groove (212) is opened inside the side wall of the inner box (25). Rollers (210) are fixedly installed on both sides of the nut rod (29). The rollers (210) roll in contact with one side of the through groove (212). A closing plate (211) is fixedly connected to one end of the nut rod (29). The closing plate (211) is slidably connected to the inner wall of the outer box (21).
2. The prefabricated distribution box for easy installation according to claim 1, characterized in that: A servo motor (27) is fixedly installed on the top of the inner wall of the inner box (25), and the output shaft of the servo motor (27) is fixedly connected to one end of the lead screw (28).
3. The prefabricated distribution box for easy installation according to claim 1, characterized in that: The outer box (21) has an upper grid plate (22) and a lower grid plate (23) fixedly connected to the inside of its side wall.
4. The prefabricated distribution box for easy installation according to claim 1, characterized in that: The auxiliary component (3) includes a support rod (31), which is fixedly connected to the top of the outer box (21). One end of the support rod (31) is fixedly connected to a rain shield (32). A cooling fan (37) is fixedly installed on the top of the inner box (25), and a dust cover (33) is fixedly connected to the top of the outer box (21).
5. The prefabricated distribution box for easy installation according to claim 1, characterized in that: The support base (24) has a first vent hole (35) inside, and the partition plate (26) has a second vent hole (36) inside.
6. The prefabricated distribution box for easy installation according to claim 1, characterized in that: A rainproof ring (34) is fixedly connected to the top of the outer casing (21).