A combined electric heating tube
By welding and threading the mounting flange of the combined electric heating tube with the heating element and terminal assembly, the problems of loose wires and complicated installation are solved, achieving stable wire connection and easy installation, thus improving the reliability and safety of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHAOQING YINGMING ELECTRIC HEATING TECH CO LTD
- Filing Date
- 2025-07-15
- Publication Date
- 2026-06-05
AI Technical Summary
The wire connections of traditional combined electric heating tubes are prone to loosening or falling off, the installation is complicated and lacks anti-shake design, which affects the heating efficiency and safety.
The system employs a combination structure of mounting flange, heating element, and terminal assembly. The wires are stably fixed through welding and threaded connections, ensuring that the wires do not shake or move during use.
This achieves stable wire connections and ease of installation, reduces the risk of failure, and improves the reliability and safety of the equipment.
Smart Images

Figure CN224329600U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of electric heating tube technology, and specifically relates to a combined electric heating tube. Background Technology
[0002] In the widespread application of electric heating elements, especially in industrial and domestic heating equipment, traditional designs often face several technical bottlenecks. Firstly, the wiring connections for combined electric heating elements typically employ a single welding or mechanical fixing method. This connection method, over long-term use, can lead to loosening or detachment of the wires due to frequent thermal expansion and contraction. This not only affects the heating efficiency of the heating element but may also cause safety hazards such as short circuits, thereby reducing the reliability of the equipment.
[0003] The installation process of existing combined electric heating elements is often complex, requiring users to perform multiple steps such as positioning, fixing, and wiring. This cumbersome operation not only easily leads to installation errors but also increases the technical requirements for users, limiting its widespread application. Furthermore, many electric heating elements lack sufficient anti-sway design, making them prone to wire swaying or positional changes in shaky or moving environments, further affecting the stability of the electrical connection.
[0004] Therefore, overcoming the shortcomings of the existing technology is an urgent problem to be solved in this technical field. Utility Model Content
[0005] In view of the technical problems mentioned in the background art, the purpose of this utility model is to provide a combined electric heating tube with a simple structure, which is more convenient and stable to install, can effectively prevent the wires from shaking or moving during use, and ensures stable wire connection, so as to solve the technical problems mentioned in the background art.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a combined electric heating tube, comprising a mounting flange, a heating element, and a terminal assembly. The mounting flange is mounted on the heating element. The heating element includes a first heating rod, a second heating rod, and a third heating rod. The terminal assembly includes a first terminal, a second terminal, and a third terminal. The first terminal is welded to the first heating rod and the second heating rod. The second terminal is welded to the first heating rod and the third heating rod. The third terminal is welded to the second heating rod and the third heating rod.
[0007] Furthermore, the surface of the mounting flange is provided with a first M4 threaded through hole, a second M4 threaded through hole, and a third M4 threaded through hole. The top of the first heating rod is connected to the first M4 threaded through hole, the top of the second heating rod is connected to the second M4 threaded through hole, and the top of the third heating rod is connected to the third M4 threaded through hole.
[0008] Furthermore, the top of the first heating rod is provided with a first conductive connecting post, the top of the second heating rod is provided with a second conductive connecting post, the top of the third heating rod is provided with a third conductive connecting post, the outer side of the first conductive connecting post is covered with a first sealing adhesive, the outer side of the second conductive connecting post is covered with a second sealing adhesive, and the outer side of the third conductive connecting post is covered with a third sealing adhesive.
[0009] Furthermore, the first terminal is welded and fixedly electrically connected to the first conductive connecting post and the second conductive connecting post, the second terminal is welded and fixedly electrically connected to the first conductive connecting post and the third conductive connecting post, and the third terminal is welded and fixedly electrically connected to the second conductive connecting post and the third conductive connecting post.
[0010] Furthermore, the upper parts of the first terminal block, the second terminal block, and the third terminal block are respectively provided with wiring connection parts, the middle part of the wiring connection part is provided with a threaded through hole, and the two sides of the wiring connection part are respectively provided with connecting buckle parts.
[0011] The present invention has the following advantages: The heating element includes a first heating rod, a second heating rod, and a third heating rod. The first heating rod, the second heating rod, and the third heating rod are respectively connected to the mounting flange. The terminal assembly includes a first terminal, a second terminal, and a third terminal. The first terminal is welded and fixedly connected to the first heating rod and the second heating rod. The second terminal is welded and fixedly connected to the first heating rod and the third heating rod. The third terminal is welded and fixedly connected to the second heating rod and the third heating rod. The combined heating tube structure of the present invention is simple, making installation more convenient and stable. It can effectively prevent the wire from shaking or moving during use, ensuring stable wire connection. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model.
[0013] Figure 2 This is a schematic diagram of the overall exploded structure of this utility model.
[0014] Reference numerals: Mounting flange 10; Heating element 20; Terminal assembly 30; First heating rod 21; Second heating rod 22; Third heating rod 23; First M4 threaded hole 11; Second M4 threaded hole 12; Third M4 threaded hole 13; First conductive connecting post 211; Second conductive connecting post 221; Third conductive connecting post 231; First sealing adhesive 24; Second sealing adhesive 25; Third sealing adhesive 26; First terminal block 31; Second terminal block 32; Third terminal block 33; Wiring connection part 34; Threaded hole 341; Connecting buckle part 342. Detailed Implementation
[0015] like Figures 1 to 2 As shown, a combined electric heating tube includes a mounting flange 10, a heating element 20, and a terminal assembly 30. The mounting flange 10 is mounted on the heating element 20, and the terminal assembly 30 is welded to the top of the heating element 20. In use, the terminal assembly 30 is used to connect to an external power source so that the heating element 20 can be energized and heated, making it convenient to use.
[0016] In practical implementation, the heating element 20 includes a first heating rod 21, a second heating rod 22, and a third heating rod 23. The surface of the mounting flange 10 is provided with a first M4 threaded through hole 11, a second M4 threaded through hole 12, and a third M4 threaded through hole 13. The top of the first heating rod 21 is connected to the first M4 threaded through hole 11, the top of the second heating rod 22 is connected to the second M4 threaded through hole 12, and the top of the third heating rod 23 is connected to the third M4 threaded through hole 13, so that the mounting flange 10 is installed on the heating element 20, making the installation simple and convenient.
[0017] In practical implementation, the top of the first heating rod 21 is provided with a first conductive connecting post 211, the top of the second heating rod 22 is provided with a second conductive connecting post 221, and the top of the third heating rod 23 is provided with a third conductive connecting post 231. The outer side of the first conductive connecting post 211 is covered with a first sealing adhesive 24, the outer side of the second conductive connecting post 221 is covered with a second sealing adhesive 25, and the outer side of the third conductive connecting post 231 is covered with a third sealing adhesive 26, thereby making the connection between the heating component 20 and the mounting flange 10 more stable and the installation stable and convenient.
[0018] In practical implementation, the terminal assembly 30 includes a first terminal 31, a second terminal 32, and a third terminal 33. The first terminal 31 is welded and fixedly connected to the first conductive connecting post 211 and the second conductive connecting post 221. The second terminal 32 is welded and fixedly connected to the first conductive connecting post 211 and the third conductive connecting post 231. The third terminal 33 is welded and fixedly connected to the second conductive connecting post 221 and the third conductive connecting post 231. Thus, the terminal assembly 30 is welded and fixedly connected to the top of the heating element 20, which is simple in structure and easy to install.
[0019] In practical implementation, the upper parts of the first terminal 31, the second terminal 32, and the third terminal 33 are respectively provided with wiring connection parts 34. The wiring connection parts 34 have a threaded through hole 341 in the middle and connection buckles 342 on both sides. In use, the threaded through hole 341 is used for the wire to pass through, so that the wire and the wiring connection parts 34 make conductive contact. The connection buckles 342 make the installation more convenient and stable, stabilize the wire connection, reduce faults caused by poor wiring, and effectively prevent the wire from shaking or moving during use, ensuring the stability of the wire connection.
[0020] In summary, the heating element 20 includes a first heating rod 21, a second heating rod 22, and a third heating rod 23. These three heating rods are connected to the mounting flange 10. The terminal assembly 30 includes a first terminal 31, a second terminal 32, and a third terminal 33. The first terminal 31 is welded and fixedly connected to the first heating rod 21 and the second heating rod 22. The second terminal 32 is welded and fixedly connected to the first heating rod 21 and the third heating rod 23. The third terminal 33 is welded and fixedly connected to the second heating rod 22 and the third heating rod 23. This invention features a simple combined heating element structure, making installation more convenient and stable. It effectively prevents the wires from shaking or moving during use, ensuring a stable wire connection.
Claims
1. A combined electric heating element, characterized in that, It includes a mounting flange (10), a heating element (20), and a terminal assembly (30). The mounting flange (10) is mounted on the heating element (20). The heating element (20) includes a first heating rod (21), a second heating rod (22), and a third heating rod (23). The terminal assembly (30) includes a first terminal (31), a second terminal (32), and a third terminal (33). The first terminal (31) is welded to the first heating rod (21) and the second heating rod (22). The second terminal (32) is welded to the first heating rod (21) and the third heating rod (23). The third terminal (33) is welded to the second heating rod (22) and the third heating rod (23).
2. The combined electric heating tube according to claim 1, characterized in that, The mounting flange (10) has a first M4 threaded through hole (11), a second M4 threaded through hole (12) and a third M4 threaded through hole (13) respectively. The top of the first heating rod (21) is connected to the first M4 threaded through hole (11), the top of the second heating rod (22) is connected to the second M4 threaded through hole (12), and the top of the third heating rod (23) is connected to the third M4 threaded through hole (13).
3. The combined electric heating tube according to claim 2, characterized in that, The first heating rod (21) has a first conductive connecting post (211) at its top, the second heating rod (22) has a second conductive connecting post (221) at its top, and the third heating rod (23) has a third conductive connecting post (231) at its top. The first conductive connecting post (211) is covered with a first sealing adhesive (24), the second conductive connecting post (221) is covered with a second sealing adhesive (25), and the third conductive connecting post (231) is covered with a third sealing adhesive (26).
4. The combined electric heating tube according to claim 3, characterized in that, The first terminal (31) is welded and fixedly connected to the first conductive connecting post (211) and the second conductive connecting post (221). The second terminal (32) is welded and fixedly connected to the first conductive connecting post (211) and the third conductive connecting post (231). The third terminal (33) is welded and fixedly connected to the second conductive connecting post (221) and the third conductive connecting post (231).
5. The combined electric heating tube according to claim 1 or 4, characterized in that, The upper part of the first terminal (31), the second terminal (32) and the third terminal (33) are respectively provided with a wiring connection part (34), the middle part of the wiring connection part (34) is provided with a threaded through hole (341), and the two sides of the wiring connection part (34) are respectively provided with a connecting buckle part (342).