Novel fireproof bus duct connector structure
By applying a fire-resistant coating to the busbar connector and combining it with an insulating plate and positioning bolt design, the problem of poor fire resistance of the busbar connector is solved, achieving improved high-efficiency insulation and fire resistance, extending service life and ensuring connection stability.
Patent Information
- Application Number
- CN202520065251.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-13
- Publication Date
- 2026-03-03
- Estimated Expiration
- 2035-01-13
AI Technical Summary
Existing busbar connectors have poor fire resistance and are easily damaged by fire, affecting their service life.
The design incorporates an insulating board coated with a fire-resistant coating, along with positioning bolts and insulating pads, to enhance insulation and fire resistance. A stable connection is achieved through the cooperation of a rotating rod and a turntable.
It improves the insulation and fire resistance of busbar connectors, extends their service life, and ensures the stability and reliability of the connection.
Smart Images

Figure CN223967614U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fire-resistant busbar technology, and in particular to a novel fire-resistant busbar connector structure. Background Technology
[0002] Busbar trunking is a closed metal structure made of copper or aluminum busbars. It is mainly used to distribute large amounts of power among various components of a system. Fire-resistant busbar trunking mainly replaces fire-resistant cables for power transmission and distribution. Due to its high fire resistance, fire-resistant busbar trunking is widely used in buildings, industrial plants and other places. Busbar trunking connectors are one of the important components in the use of busbar trunking. They are used to connect busbar trunking with other electrical equipment to ensure efficient transmission and distribution of electrical energy.
[0003] Chinese patent discloses a fire-resistant busbar connector (authorization announcement number CN215897241U). This patented technology improves the insulation performance of the product by setting an insulating sleeve, preventing electric shock and short circuits; the transition connection of adjacent conductive copper plates increases the conductive contact area between the conductive busbar of the fire-resistant busbar and the connector, achieving a reliable electrical connection; the setting of the first and second side plates protects one end of the torque bolt, and the setting of the third and fourth side plates protects the other end of the torque bolt and the torque nut.
[0004] However, most existing busbar trunking connectors rely on insulating sleeves for fire resistance, resulting in poor fire resistance and easy damage, thus affecting their service life. For example, the aforementioned comparative document uses insulating sleeves for fire resistance treatment of the busbar trunking connector. In practical applications, using only insulating sleeves provides insufficient insulation, making them easily damaged by fire and impacting their lifespan. Therefore, those skilled in the art have provided a novel fire-resistant busbar trunking connector structure to address the problems mentioned in the background section. Utility Model Content
[0005] To address the shortcomings of existing technologies, this utility model provides a novel fire-resistant busbar trunking connector structure, which solves the problems mentioned in the background section.
[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a novel fire-resistant busbar trunking connector structure, comprising: a conductive copper plate disposed between two housings; an insulating plate installed on the upper and lower surfaces of both housings; a fire-resistant coating applied to the upper surface of the insulating plate above the housings; an insulating pad provided on the lower surface of the insulating plate above the conductive copper plate; a connecting plate installed on the front and rear surfaces of the insulating plate; a rotating rod penetrating through the upper surface of the connecting plate; a fixing groove formed on the lower surface of the connecting plate; and an insulating pressure pad provided inside the fixing groove at the lower end of the rotating rod.
[0007] As a further technical solution of this utility model, the insulating pad is made of rubber, and the lower surface of the insulating pad is in contact with the upper surface of the conductive copper plate.
[0008] As a further technical solution of this utility model, the upper surface of the insulating plate is symmetrically provided with positioning bolts, the upper surface of the outer shell is provided with a connecting hole, and the end of the positioning bolt is embedded in the connecting hole and threadedly connected to the connecting hole.
[0009] As a further technical solution of this utility model, the thickness of the refractory coating is 2mm, and the material of the refractory coating is silicon carbide.
[0010] As a further technical solution of this utility model, the upper surface of the insulating pad is provided with a bearing, and the lower end of the rotating rod is embedded in the bearing and rotatably connected to the bearing.
[0011] As a further technical solution of this utility model, the upper end of the rotating rod is connected to a turntable, and the upper surface of the connecting plate is provided with a positioning groove that is compatible with the turntable.
[0012] This utility model provides a novel fire-resistant busbar trunking connector structure, which has the following advantages compared with the prior art:
[0013] 1. This design presents a novel fire-resistant busbar trunking connector structure. Through the arrangement of an insulating plate, a fire-resistant coating, positioning bolts, and insulating pads, the insulating plate can be installed using the positioning bolts, and the insulating pads provide the busbar trunking connector with efficient insulation protection. At the same time, the fire-resistant coating enables the busbar trunking connector to have fire resistance, improving its service life and making it highly practical.
[0014] 2. This design presents a novel fire-resistant busbar connector structure. Through the arrangement of a connecting plate, insulating pad, rotating rod, turntable, positioning groove, bearing, and fixing groove, the rotation of the turntable and rotating rod allows the insulating pad to move downwards to position the busbar after installation, preventing it from falling off and affecting the connection and use of the busbar. Attached Figure Description
[0015] Figure 1 This is a structural schematic diagram of a novel fire-resistant busbar trunking connector.
[0016] Figure 2 This is a schematic diagram of the insulating plate in a novel fire-resistant busbar connector structure.
[0017] Figure 3 This is a schematic diagram of the insulating pad in a novel fire-resistant busbar connector structure.
[0018] Figure 4 This is a schematic diagram of the rotating rod in a novel fire-resistant busbar connector structure.
[0019] In the diagram: 1. Outer shell; 2. Conductive copper plate; 3. Insulating plate; 31. Fire-resistant coating; 32. Positioning bolt; 33. Insulating pad; 4. Connecting plate; 41. Insulating pressure pad; 42. Rotating rod; 421. Turntable; 422. Positioning groove; 43. Bearing; 44. Fixing groove. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0021] Please see Figure 1-4 This utility model provides a novel fire-resistant busbar connector structure, comprising: a conductive copper plate 2 disposed between two housings 1; an insulating plate 3 installed on the upper and lower surfaces of both housings 1; a fire-resistant coating 31 coated on the upper surface of the insulating plate 3 above the housings 1; and an insulating pad 33 disposed on the lower surface of the insulating plate 3 above the conductive copper plate 2; a connecting plate 4 installed on the front and rear surfaces of the insulating plate 3; a rotating rod 42 penetrating the upper surface of the connecting plate 4; and a fixing groove 44 formed on the lower surface of the connecting plate 4; with an insulating pressure pad 41 disposed inside the fixing groove 44 at the lower end of the rotating rod 42. This arrangement utilizes the fire-resistant coating 31 on the insulating plate 3 to achieve high fire resistance and improve its service life. Furthermore, the insulating pressure pad 41 can press the connected busbar tightly, ensuring its stability and preventing it from falling off and affecting its use.
[0022] like Figure 1 and Figure 3As shown, the insulating pad 33 is made of rubber, and the lower surface of the insulating pad 33 is in contact with the upper surface of the conductive copper plate 2. This arrangement, using the insulating pad 33, enables the busbar connector to have insulating properties and has good practicality.
[0023] like Figure 1 and Figure 2 As shown, the upper surface of the insulating plate 3 is also symmetrically provided with positioning bolts 32, and the upper surface of the outer shell 1 is provided with a connecting hole. The end of the positioning bolt 32 is embedded in the connecting hole and threadedly connected to the connecting hole. This arrangement can achieve the purpose of connecting the insulating plate 3 by using the positioning bolt 32 and the connecting hole threadedly connected.
[0024] like Figure 2 As shown, the thickness of the fire-resistant coating 31 is 2mm, and the material of the fire-resistant coating 31 is silicon carbide. This configuration utilizes the fire-resistant coating 31 to enable the busbar connector to have high-efficiency fire resistance and improve its service life.
[0025] like Figure 4 As shown, the upper surface of the insulating pressure pad 41 is provided with a bearing 43, the lower end of the rotating rod 42 is embedded in the bearing 43 and rotatably connected to the bearing 43, the upper end of the rotating rod 42 is connected to a turntable 421, and the upper surface of the connecting plate 4 is provided with a positioning groove 422 that is compatible with the turntable 421. This arrangement utilizes the rotation of the turntable 421 and the rotating rod 42 to enable the insulating pressure pad 41 to press down on the busbar trunking, ensuring its stability.
[0026] The working principle of this utility model is as follows: When using the fire-resistant busbar connector structure of this utility model, the insulating plate 3 is first connected to the outer shell 1 of the busbar connector by the positioning bolt 32. After the connection, the insulating pad 33 will contact the conductive copper plate 2 to achieve its insulation performance. Furthermore, by coating the outer surface of the insulating plate 3 with a fire-resistant coating 31, the fire resistance of the busbar connector can be improved.
[0027] When the busbar connector is connected to the busbar, that is, the busbar is connected to the conductive copper plate 2, the turntable 421 and the rotating rod 42 can be rotated. During the rotation, the insulating pad 41 can be raised and lowered inside the fixed groove 44, so that the insulating pad 41 contacts the installed busbar downwards. This ensures the stability of the busbar and prevents the busbar from falling off and affecting its normal use.
[0028] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model are implemented according to conventional methods in the art, unless otherwise specified or limited.
Claims
1. A novel fire-resistant busbar trunking connector structure, characterized in that, include: A conductive copper plate (2) is disposed between the two outer shells (1). An insulating plate (3) is installed on the upper and lower surfaces of the two outer shells (1). A fire-resistant coating (31) is coated on the upper surface of the insulating plate (3) above the outer shell (1), and an insulating pad (33) is disposed on the lower surface of the insulating plate (3) above the conductive copper plate (2). A connecting plate (4) is installed on the front and rear surfaces of the insulating plate (3). A rotating rod (42) is disposed through the upper surface of the connecting plate (4), and a fixing groove (44) is opened on the lower surface of the connecting plate (4). An insulating pressure pad (41) is disposed inside the fixing groove (44) at the lower end of the rotating rod (42).
2. The novel fire-resistant busbar trunking connector structure according to claim 1, characterized in that, The insulating pad (33) is made of rubber, and the lower surface of the insulating pad (33) is in contact with the upper surface of the conductive copper plate (2).
3. The novel fire-resistant busbar trunking connector structure according to claim 1, characterized in that, The upper surface of the insulating plate (3) is also symmetrically provided with positioning bolts (32), and the upper surface of the outer shell (1) is provided with a connecting hole. The end of the positioning bolt (32) is embedded in the connecting hole and threadedly connected to the connecting hole.
4. The novel fire-resistant busbar trunking connector structure according to claim 1, characterized in that, The thickness of the refractory coating (31) is 2 mm, and the material of the refractory coating (31) is silicon carbide.
5. The novel fire-resistant busbar trunking connector structure according to claim 1, characterized in that, The upper surface of the insulating pad (41) is provided with a bearing (43), and the lower end of the rotating rod (42) is embedded in the bearing (43) and rotatably connected to the bearing (43).
6. The novel fire-resistant busbar trunking connector structure according to claim 1, characterized in that, The upper end of the rotating rod (42) is connected to a turntable (421), and the upper surface of the connecting plate (4) is provided with a positioning groove (422) that is compatible with the turntable (421).