Bus duct with joint waterproof sealing structure
By designing sealing and auxiliary mechanisms at the busbar joints, the problem of water ingress when dense busbars pass through floors is solved, achieving waterproofing, dustproofing, and rapid assembly, thus ensuring the safety and reliability of the busbars.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU HUADU ELECTRIC CO LTD
- Filing Date
- 2025-05-26
- Publication Date
- 2026-07-07
AI Technical Summary
Existing high-density busbar trunking is prone to water accumulation due to roof or wall leaks when passing through floors. Water can enter through the joint gaps, reducing insulation and potentially burning out the busbar trunking.
The design incorporates a waterproof sealing structure for the joints of the busbar trunking. It employs sealing and auxiliary mechanisms, including a first sealing frame, a second sealing frame, a magnetic arc plate, and limit bolts, to achieve effective sealing of the connection ends and rapid assembly.
It effectively prevents water and dust from entering the busbar trunking, maintains insulation, avoids short circuits and burnout, and facilitates the replacement and maintenance of the sealing mechanism.
Smart Images

Figure CN224473023U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of busbar technology, and in particular to a busbar with a waterproof sealing structure for the joint. Background Technology
[0002] Busbar trunking is a closed metal device made of copper or aluminum busbar columns. It is mainly used to distribute large power to various components of a distributed system. Busbar trunking is increasingly replacing wires and cables in indoor low-voltage power transmission trunk line projects. Busbar trunking is widely used in power supply and distribution sites such as factories, commercial centers, high-rise buildings, generator rooms, data centers, and lighting systems, as well as in vertical shafts of high-rise buildings.
[0003] Existing high-density busbar trunking is generally designed for indoor use. When the busbar trunking passes through floors, water can easily accumulate on the floors due to various reasons such as roof or wall leaks. The water will leak down the busbar trunking that passes through the floors. Since most busbar trunking joints have gaps, water can easily enter the busbar trunking. If the busbar trunking is flooded with water for a long time, it will inevitably reduce its insulation, thereby causing short circuits or even burning out the busbar trunking. In view of this, we propose a busbar trunking with a waterproof sealing structure for the joints. Utility Model Content
[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a busbar trunking with a waterproof sealing structure for joints. This solves the problem that existing high-density busbar trunking is generally designed for indoor use. When the busbar trunking passes through floors, water can easily accumulate on the floors due to various reasons such as roof or wall leakage. The accumulated water will leak down the busbar trunking that passes through the floors. Since there are gaps at the joints of most busbar trunking, water can easily enter the busbar trunking. If the busbar trunking is infiltrated by water for a long time, it will inevitably reduce its insulation, thereby causing short circuits or even burning out the busbar trunking.
[0005] In order to achieve the purpose of this utility model, the technical solution adopted by this utility model is as follows: design a busbar trunking with a waterproof sealing structure for joints, including a busbar trunking body, a set of sealing mechanisms symmetrically arranged on the left and right sides of the surface of the busbar trunking body, and a set of auxiliary mechanisms symmetrically arranged on the upper and lower sides of the set of sealing mechanisms.
[0006] The sealing mechanism includes a first sealing frame, which is attached to the upper surface of the busbar trunking body. A second sealing frame is attached to the bottom of the first sealing frame. A set of clamping plates are symmetrically fixed on the side surface of the second sealing frame near the first sealing frame. Sealing strips are adhered to the side surfaces of both the first and second sealing frames. A guide groove frame is fixed in the middle of the side of both the first and second sealing frames away from the sealing strips. A magnetic arc plate is fixedly embedded inside the guide groove frame.
[0007] Preferably, the sealing mechanism further includes a fixing ring frame, a set of fixing ring frames symmetrically fixed on the upper and lower surfaces of the busbar trunking body, and a set of limiting bolts symmetrically screwed into the interior of the set of fixing ring frames.
[0008] Preferably, the first sealing frame and the second sealing frame together form a hollow rectangular frame, and the bottom inner side of the first sealing frame is provided with a slot that matches the card plate.
[0009] Preferably, the outer wall of the fixed ring frame is in contact with the inner wall of the guide groove frame, the magnetic arc plate is magnetically connected to the fixed ring frame, and both the first sealing frame and the second sealing frame can form a locking and sliding structure with the fixed ring frame through the guide groove frame.
[0010] Preferably, the bottom of the limiting bolt head is in contact with the surface of the guide groove frame, and the diameter of the limiting bolt head is larger than the width of the inner groove of the guide groove frame.
[0011] Preferably, the auxiliary mechanism includes a limiting frame, which is fixed to the surface of a sealing mechanism. A limiting plate is engaged inside the limiting frame, and the limiting plate is fixed to the surface of another sealing mechanism. A cylindrical frame is fixed to the surface of the limiting frame, and a limiting rod passes through the inside of the cylindrical frame. A limiting ring plate is fixedly sleeved on the surface of the limiting rod, and a spring is provided on one side of the limiting ring plate.
[0012] Preferably, the limiting frame is connected to the cylindrical frame, the outer end of the limiting rod is spherical, and the inner end of the limiting rod is located inside the limiting frame.
[0013] Preferably, the limiting plate has a limiting groove inside that matches the inner end of the limiting rod, and the limiting rod is formed into an elastic structure by a limiting ring plate, a spring and a cylindrical frame.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0015] 1. This utility model effectively seals the connection end by uniformly moving the first and second sealing frames of a set of busbar trunking bodies near the connection end outward. The tight fit between the sealing strips effectively achieves waterproofing and dustproofing. Then, an auxiliary mechanism is used to connect and fix adjacent sets of first and second sealing frames. The cooperation between the fixing ring frame and the limiting bolt allows the guide groove frame to slide freely without detaching from the busbar trunking body. When it is necessary to replace a first or second sealing frame, the corresponding limiting bolt can be removed. When a sealing mechanism is not needed, the magnetic arc plate in the sealing mechanism is attached to the fixing ring frame to maintain the placement stability of the sealing mechanism.
[0016] 2. In this utility model, the limiting rod is first pulled outward to disengage the inner end of the limiting rod from the limiting frame, so that the limiting plate on the other busbar trunking body can be smoothly inserted into the limiting frame on the current busbar trunking body. Then, the limiting rod is released, and the inner end of the limiting rod pops out and effectively engages with the inside of the limiting plate due to the spring rebound force, thereby quickly achieving the limiting and fixing of the limiting plate, and thus quickly achieving the assembly between a set of sealing mechanisms on a set of busbar trunking bodies. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the disassembled sealing mechanism of this utility model;
[0019] Figure 3 This is a schematic diagram of the disassembled sealing mechanism from another perspective of the present invention;
[0020] Figure 4 This is a schematic diagram of the combined structure between the main bodies of the busbar trunking of this utility model;
[0021] Figure 5 For the present utility model Figure 4 Schematic diagram of partial cross-sectional structure;
[0022] Figure 6 For the present utility model Figure 5 A magnified view of the structure at point A in the middle;
[0023] In the diagram: 1. Busbar trunking body; 2. Sealing mechanism; 3. Auxiliary mechanism;
[0024] 201. First sealing frame; 202. Second sealing frame; 203. Clamping plate; 204. Sealing strip; 205. Guide groove frame; 206. Magnetic arc plate; 207. Fixing ring frame; 208. Limiting bolt;
[0025] 301. Limiting frame; 302. Limiting plate; 303. Cylindrical frame; 304. Limiting rod; 305. Limiting ring plate; 306. Spring. Detailed Implementation
[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments:
[0027] A busbar trunking with a waterproof sealing structure for the joints, see [reference needed]. Figures 1 to 6 It includes a bus trunking body 1, a set of sealing mechanisms 2 symmetrically arranged on the left and right sides of the surface of the bus trunking body 1, and a set of auxiliary mechanisms 3 symmetrically arranged on the top and bottom of the surface of the set of sealing mechanisms 2.
[0028] The sealing mechanism 2 includes a first sealing frame 201, which is attached to the upper surface of the busbar trunking body 1. A second sealing frame 202 is attached to the bottom of the first sealing frame 201. A set of clamping plates 203 are symmetrically fixed on the side surface of the second sealing frame 202 near the first sealing frame 201. The first sealing frame 201 and the second sealing frame 202 together form a hollow rectangular frame. A groove matching the clamping plates 203 is opened on the inner side of the bottom of the first sealing frame 201. Sealing strips 204 are adhered to the side surfaces of the first sealing frame 201 and the second sealing frame 202. A guide groove frame 205 is fixed in the middle of the side of the first sealing frame 201 and the second sealing frame 202 away from the sealing strip 204. The sealing mechanism 2 also includes a fixing ring frame 207, which is internally fixed and embedded with a magnetic arc plate 206. A set of fixing ring frames 207 are symmetrically fixed on the upper and lower surfaces of the busbar trunking body 1. Furthermore, the outer wall of the fixing ring frame 207 is in contact with the inner wall of the guide groove frame 205. The magnetic arc plate 206 and the fixing ring frame 207 are magnetically connected. The first sealing frame 201 and the second sealing frame 202 can both form a locking and sliding structure with the fixing ring frame 207 through the guide groove frame 205. A set of limiting bolts 208 are symmetrically screwed into the fixing ring frame 207. Furthermore, the bottom of the screw head of the limiting bolt 208 is in contact with the surface of the guide groove frame 205, and the diameter of the screw head of the limiting bolt 208 is larger than the width of the inner groove of the guide groove frame 205. This utility model effectively seals the connection end by uniformly moving the first sealing frame 201 and the second sealing frame 202 of a set of busbar trunking bodies 1 near the connection end outward. The tight fit between the sealing strips 204 effectively achieves waterproof and dustproof protection. Then, an auxiliary mechanism 3 is used to connect and fix the adjacent set of first sealing frames 201 and the set of second sealing frames 202. The cooperation between the fixing ring frame 207 and the limiting bolt 208 allows the guide groove frame 205 to slide freely without detaching from the busbar trunking body 1. When it is necessary to replace a first sealing frame 201 or a second sealing frame 202, the corresponding limiting bolt 208 can be removed. When a sealing mechanism 2 is not needed, the magnetic arc plate 206 in the sealing mechanism 2 is attached to the fixing ring frame 207 to maintain the placement stability of the sealing mechanism 2.
[0029] It is worth noting that the auxiliary mechanism 3 includes a limiting frame 301, which is fixed to the surface of a sealing mechanism 2. A limiting plate 302 is engaged inside the limiting frame 301. The limiting plate 302 is fixed to the surface of another sealing mechanism 2. A cylindrical frame 303 is fixed to the surface of the limiting frame 301. A limiting rod 304 passes through the inside of the cylindrical frame 303. The limiting frame 301 and the cylindrical frame 303 are connected. The outer end of the limiting rod 304 is spherical, and the inner end of the limiting rod 304 is located inside the limiting frame 301. A limiting ring plate 305 is fixedly sleeved on the surface of the limiting rod 304. A spring 306 is provided on one side of the limiting ring plate 305. Furthermore, a limiting groove matching the inner end of the limiting rod 304 is opened inside the limiting plate 302. The limiting rod 304 forms an elastic structure with the cylindrical frame 303 through the limiting ring plate 305, the spring 306, and the limiting ring plate 305. In this utility model, the limiting rod 304 is first pulled outward so that the inner end of the limiting rod 304 is disengaged from the limiting frame 301, which facilitates the easy insertion of the limiting plate 302 on the other busbar trunking body 1 into the limiting frame 301 on the current busbar trunking body 1. Then, the limiting rod 304 is released, and under the influence of the spring 306, the inner end of the limiting rod 304 pops out and effectively engages with the limiting plate 302, thereby quickly achieving the limiting and fixing of the limiting plate 302, and thus quickly achieving the assembly between a set of sealing mechanisms 2 on a set of busbar trunking bodies 1.
[0030] Working principle: With slight force, the first sealing frame 201 and the second sealing frame 202 near the connection end of a set of busbar trunking bodies 1 are moved outwards to seal the connection end. The tight fit between the sealing strips 204 provides waterproofing and dustproofing. Then, the limiting rod 304 near the connection end is pulled outwards to disengage the inner end of the limiting rod 304 from the limiting frame 301, allowing the limiting plate 302 on another busbar trunking body 1 to smoothly engage with the limiting frame 301 on the current busbar trunking body 1. After releasing the limiting rod 304, the inner end of the limiting rod 304 pops out and engages with the limiting plate due to the rebound force of the spring 306. Inside 302, the limiting plate 302 is quickly fixed, thereby quickly assembling a set of sealing mechanisms 2 on a set of busbar trunking bodies 1. The cooperation between the fixing ring 207 and the limiting bolt 208 allows the guide trough frame 205 to slide freely without detaching from the busbar trunking body 1. When it is necessary to replace a first sealing frame 201 or a second sealing frame 202, the corresponding limiting bolt 208 can be removed. When a sealing mechanism 2 is not needed, the magnetic arc plate 206 in the sealing mechanism 2 is attached to the fixing ring 207 to maintain the placement stability of the sealing mechanism 2.
[0031] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.
Claims
1. A busbar trunking system with a waterproof sealing structure for joints, comprising a busbar trunking body (1), characterized in that, The main body (1) of the busbar trunking is provided with a set of sealing mechanisms (2) symmetrically arranged on the left and right sides, and a set of auxiliary mechanisms (3) is provided symmetrically on the top and bottom sides of the set of sealing mechanisms (2); The sealing mechanism (2) includes a first sealing frame (201), which is attached to the upper surface of the busbar trunking body (1). A second sealing frame (202) is attached to the bottom of the first sealing frame (201). A set of clamping plates (203) are symmetrically fixed on the side surface of the second sealing frame (202) near the first sealing frame (201). Sealing strips (204) are glued to the side surfaces of the first sealing frame (201) and the second sealing frame (202). A guide groove frame (205) is fixed in the middle of the side of the first sealing frame (201) and the second sealing frame (202) away from the sealing strip (204). A magnetic arc plate (206) is fixedly embedded inside the guide groove frame (205).
2. The busbar trunking with a waterproof sealing structure for joints as described in claim 1, characterized in that, The sealing mechanism (2) also includes a fixing ring frame (207). A set of fixing ring frames (207) are symmetrically fixed on the upper and lower surfaces of the busbar trunking body (1). A set of limiting bolts (208) are symmetrically screwed into the interior of the set of fixing ring frames (207).
3. A busbar trunking with a waterproof sealing structure for joints as described in claim 2, characterized in that, The first sealing frame (201) and the second sealing frame (202) together form a hollow rectangular frame. The bottom inner side of the first sealing frame (201) is provided with a slot that matches the card plate (203).
4. A busbar trunking with a waterproof sealing structure for joints as described in claim 2, characterized in that, The outer wall of the fixed ring frame (207) is in contact with the inner wall of the guide groove frame (205), and the magnetic arc plate (206) is magnetically connected to the fixed ring frame (207). The first sealing frame (201) and the second sealing frame (202) can both form a locking and sliding structure with the fixed ring frame (207) through the guide groove frame (205).
5. A busbar trunking with a waterproof sealing structure for joints as described in claim 2, characterized in that, The bottom of the screw head of the limiting bolt (208) is in contact with the surface of the guide groove frame (205), and the diameter of the screw head of the limiting bolt (208) is greater than the width of the inner groove of the guide groove frame (205).
6. A busbar trunking with a waterproof sealing structure for joints as described in claim 2, characterized in that, The auxiliary mechanism (3) includes a limiting frame (301), which is fixed to the surface of a sealing mechanism (2). A limiting plate (302) is engaged inside the limiting frame (301). The limiting plate (302) is fixed to the surface of another sealing mechanism (2). A cylindrical frame (303) is fixed to the surface of the limiting frame (301). A limiting rod (304) passes through the inside of the cylindrical frame (303). A limiting ring plate (305) is fixedly sleeved on the surface of the limiting rod (304). A spring (306) is provided on one side of the limiting ring plate (305).
7. A busbar trunking with a waterproof sealing structure for joints as described in claim 6, characterized in that, The limiting frame (301) is connected to the cylindrical frame (303), the outer end of the limiting rod (304) is spherical, and the inner end of the limiting rod (304) is located inside the limiting frame (301).
8. A busbar trunking with a waterproof sealing structure for joints as described in claim 6, characterized in that, The limiting plate (302) has a limiting groove inside that matches the inner end of the limiting rod (304). The limiting rod (304) forms an elastic structure with the limiting ring plate (305), the spring (306) and the cylinder frame (303).