Electrical connection terminal for guiding a conductor through a wall
Patent Information
- Application Number
- CN202522397305.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-12
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-11-12
AI Technical Summary
在潮湿环境或可能接触水分的场景中，水容易从壁体开孔处侵入，导致内部导体锈蚀、绝缘性能下降，进而引发线路短路、漏电等安全隐患，严重影响电气设备的正常运行和使用寿命
该技术方案在散热上，接线端子块设上下两排镶嵌于开口且涂有导热硅脂的金属导热块，搭配导热鳍片，能将工作产生的热量高效传递到墙体接线腔，再传至墙体，避免热量影响端子性能。密封方面，端板矩形边框镶嵌的低温凝胶密封圈，遇水或潮湿会自膨胀，与墙体接线腔内壁紧密接触，有效防止外部潮湿侵入端子内部，保障电气连接安全稳定。此外，接线端子块与插拔式接线端头通过凸块、吊耳和紧固螺栓稳固连接，端板设置通孔辅助定位安装，且接线端子块与接线腔保持一定间距，方便维护，整体提升了电气连接端子在通过壁体时的可靠性、安全性和稳定性。
Smart Images
Figure CN224842529U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of through-wall terminal block technology, specifically to an electrical connection terminal block for guiding a conductor through a wall. Background Technology
[0002] In the field of electrical connections, reliably guiding conductors through walls (such as electrical equipment housings, walls, etc.) and achieving a stable electrical connection between internal and external conductors is a critical requirement in many industrial scenarios. Traditional lead terminals have several limitations. While integrated lead terminals can be inserted into wall openings and secured using positioning components, they lack effective waterproofing designs. In humid environments or scenarios where moisture may come into contact with the material, water can easily seep in through the wall openings, leading to corrosion of the internal conductors, decreased insulation performance, and ultimately causing short circuits, leakage, and other safety hazards, severely impacting the normal operation and lifespan of electrical equipment.
[0003] Meanwhile, traditional lead terminals also have shortcomings in heat dissipation. With the continuous increase in the power of electrical equipment, the heat generated when current flows through conductors increases. If this heat cannot be dissipated effectively and promptly, it will cause the lead terminal temperature to rise, accelerating the aging of insulation materials, reducing the reliability and stability of electrical connections, and may even lead to safety accidents such as fires. Therefore, a new type of electrical connection terminal for guiding conductors through walls is needed, possessing good waterproof sealing performance and efficient heat dissipation capabilities to improve the safety, reliability, and stability of electrical connections. Utility Model Content
[0004] The purpose of this utility model is to provide a technical solution for an electrical connection terminal for guiding a body through a wall, thereby overcoming the shortcomings mentioned in the background art. To address the drawbacks and defects described in the background art, this technical solution includes the following: It includes a row of terminal blocks fixed to each other inside the wall, and a row of pluggable terminals located outside the wall that are connected to the terminal blocks. An end plate embedded in the wall is provided between the terminal blocks and the pluggable terminals. The rear end face of the terminal block is fixedly connected to 3-5 wire harnesses inside the wall, and the front end face of the plug-in terminal is fixedly connected to 3-5 wire harnesses outside the wall; wherein, the head end of the plug-in terminal is coupled into the front port of the terminal block for wiring. Several metal heat-conducting blocks are embedded and fixed on the upper and lower surfaces of the terminal blocks, and multiple heat-conducting fins are fixed on the upper or lower surfaces of the metal heat-conducting blocks that are far apart from each other. A rectangular frame is fixedly connected to the outer surface of the end plate, and a low-temperature gel sealing ring is embedded in the outer surface of the rectangular frame.
[0005] As a preferred embodiment of this utility model: each of the terminal blocks is provided with an opening for the upper and lower rows of metal heat-conducting blocks to be embedded, and the inner sidewall of the opening is coated with thermal grease between the outer surface of the metal heat-conducting block and the inner sidewall of the opening.
[0006] As a preferred embodiment of this utility model: the terminal block is placed in the pre-reserved wiring cavity in the wall, and the outer surface of the terminal block has a distance of 3-7cm from the inner surface of the wiring cavity inside the wall.
[0007] As a preferred embodiment of this utility model: protrusions are fixedly connected to both the left and right side walls of the terminal block, and lifting lugs are fixed to both the left and right side walls of the pluggable terminal head, and threaded holes are provided inside the lifting lugs and protrusions.
[0008] As a preferred embodiment of this utility model, a fastening bolt is screwed through the interior of the lug and the protrusion.
[0009] As a preferred embodiment of this utility model, the end plate has through holes on both the left and right sides for fastening bolts to pass through.
[0010] As a preferred embodiment of this utility model: a sealing groove for embedding a low-temperature gel sealing ring is formed at the middle section of the outer surface of the rectangular frame.
[0011] As a preferred embodiment of this utility model: the inner central area of the end plate is provided with a strip-shaped opening for inserting pluggable terminals into the terminal block.
[0012] As a preferred embodiment of this utility model, the outer surface of the low-temperature gel sealing ring is in close contact with the inner wall of the pre-reserved wiring cavity on the wall.
[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows: In terms of heat dissipation, this technical solution features two rows of metal heat-conducting blocks, each embedded in an opening and coated with thermal grease, along with heat-conducting fins. This efficiently transfers the heat generated during operation to the wall-mounted wiring cavity and then to the wall, preventing heat from affecting terminal performance. For sealing, the low-temperature gel sealing ring embedded in the rectangular frame of the end plate expands upon contact with water or moisture, making tight contact with the inner wall of the wall-mounted wiring cavity. This effectively prevents external moisture from intruding into the terminal, ensuring a safe and stable electrical connection. Furthermore, the terminal block and pluggable terminals are securely connected via protrusions, lugs, and fastening bolts. The end plate has through holes for auxiliary positioning and installation, and a certain distance is maintained between the terminal block and the wiring cavity for easy maintenance. Overall, this improves the reliability, safety, and stability of the electrical connection terminals when passing through walls. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.
[0015] Figure 1 This is a schematic diagram of the overall structure of the wiring terminal; Figure 2 This is a schematic diagram showing the disassembled wiring terminals; Figure 3 This is a schematic diagram of a terminal block; Figure 4 This is a schematic diagram of a seal.
[0016] Explanation of reference numerals in the attached figures: 1. Terminal block; 2. Plug-in terminal; 3. End plate; 4. External wiring harness; 5. Heat-conducting fins; 6. Internal wiring harness; 7. Lifting lug; 8. Fastening bolt; 9. Protrusion; 10. Metal heat-conducting block; 11. Rectangular frame; 12. Low-temperature gel sealing ring. Detailed Implementation
[0017] To provide a clearer explanation and illustration of the technical solution and implementation of this utility model, several preferred specific embodiments for implementing the technical solution of this utility model are described below. The following description is merely exemplary and not intended to limit the scope, application, or use of this disclosure. It should be understood that in all these drawings, the same or similar reference numerals indicate the same or similar parts and features. The various drawings only schematically illustrate the concept and principle of the embodiments of this disclosure and do not necessarily show the specific dimensions and proportions of the various embodiments of this disclosure. The technical solution of this utility model will be clearly and completely described below in conjunction with embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model.
[0018] Example 1: An electrical connection terminal for guiding a body through a wall includes a row of terminal blocks 1 fixed to each other inside the wall. A row of pluggable terminals 2 located outside the wall are provided on the front side of each terminal block 1, and an end plate 3 embedded in the wall is provided between the terminal blocks 1 and the pluggable terminals 2. Three wire harnesses 6 are fixedly connected to the rear end face of the terminal blocks 1, and three wire harnesses 4 are fixedly connected to the front end face of the pluggable terminals 2. The head end of the pluggable terminals 2 is coupled into the front port of the terminal blocks 1. Several metal heat-conducting blocks 10 are embedded and fixed on the upper and lower surfaces of the terminal blocks 1. Several heat-conducting fins 5 are fixed on the upper or lower surfaces of the metal heat-conducting blocks 10 that are far apart from each other. Openings are provided between the terminal blocks 1 for the upper and lower rows of metal heat-conducting blocks 10 to be embedded. The inner sidewall of the opening and the outer surface of the metal heat-conducting blocks 10 are coated with thermal grease. The heat generated by the operation of the terminal blocks 1 is transferred to the wall wiring cavity through the metal heat-conducting blocks 10 and the heat-conducting fins 5, and then transferred to the wall from the wiring cavity. A rectangular frame 11 is fixedly connected to the outer surface of the end plate 3. A cryogenic gel sealing ring 12 is inlaid on the outer surface of the rectangular frame 11. A sealing groove for the cryogenic gel sealing ring 12 is opened in the middle of the outer surface of the rectangular frame 11. Through holes for fastening bolts 8 are opened on the left and right sides of the end plate 3. A strip-shaped opening is opened in the central area of the end plate 3 for inserting pluggable terminal 2 into the terminal block 1. The outer surface of the cryogenic gel sealing ring 12 is in close contact with the inner wall of the pre-reserved wiring cavity on the wall. It expands when exposed to water or moisture to prevent external moisture from entering the terminal. The terminal block 1 is placed in the pre-reserved wiring cavity in the wall. There is a 5cm gap between the outer surface of the terminal block 1 and the inner surface of the wiring cavity inside the wall. Protrusions 9 are fixedly connected to the left and right side walls of the terminal block 1. Lifting lugs 7 are fixed to the left and right side walls of the pluggable terminal 2. Threaded holes are provided inside the lifting lugs 7 and the protrusions 9. A fastening bolt 8 is screwed through the lifting lugs 7 and the protrusions 9.
[0019] Example 2: An electrical connection terminal for guiding a conductor through a wall. Four internal wall wire harnesses 6 are fixedly connected to the rear end face of the terminal block 1, and four external wall wire harnesses 4 are fixedly connected to the front end face of the pluggable terminal head 2. Several metal heat-conducting blocks 10 are embedded and fixed on the upper and lower surfaces of the terminal blocks 1. Multiple heat-conducting fins 5 are fixed on the upper or lower surfaces of the metal heat-conducting blocks 10 that are far apart from each other. Openings are provided between the terminal blocks 1 for embedding the upper and lower rows of metal heat-conducting blocks 10. Thermal grease is applied to the inner sidewalls of the openings and the outer surfaces of the metal heat-conducting blocks 10. Heat is transferred to the wall wiring cavity via the metal heat-conducting blocks 10 and the heat-conducting fins 5, and then to the wall. A rectangular frame 11 is fixedly connected to the outer surface of the end plate 3. A cryogenic gel sealing ring 12 is inlaid on the outer surface of the rectangular frame 11. A sealing groove for the cryogenic gel sealing ring 12 is opened in the middle of the outer surface of the rectangular frame 11. Through holes for fastening bolts 8 are opened on the left and right sides of the end plate 3. A strip-shaped opening is opened in the central area of the end plate 3 for inserting pluggable terminal 2 into the terminal block 1. The outer surface of the cryogenic gel sealing ring 12 is in close contact with the inner wall of the pre-reserved wiring cavity on the wall. It expands when exposed to water or moisture to prevent external moisture from entering the terminal. The terminal block 1 is placed in the pre-reserved wiring cavity in the wall. There is a 3cm gap between the outer surface of the terminal block 1 and the inner surface of the wiring cavity inside the wall. Protrusions 9 are fixedly connected to the left and right side walls of the terminal block 1. Lifting lugs 7 are fixed to the left and right side walls of the pluggable terminal 2. Threaded holes are provided inside the lifting lugs 7 and the protrusions 9. A fastening bolt 8 is screwed through the lifting lugs 7 and the protrusions 9.
[0020] Example 3: An electrical connection terminal for guiding a conductor through a wall. Five internal wall wire harnesses 6 are fixedly connected to the rear end face of the terminal block 1, and five external wall wire harnesses 4 are fixedly connected to the front end face of the pluggable terminal head 2. Several metal heat-conducting blocks 10 are embedded and fixed on the upper and lower surfaces of the terminal blocks 1. Multiple heat-conducting fins 5 are fixed on the upper or lower surfaces of the metal heat-conducting blocks 10 that are far apart from each other. Openings are provided between the terminal blocks 1 for embedding the upper and lower rows of metal heat-conducting blocks 10. Thermal grease is applied to the inner sidewalls of the openings and the outer surfaces of the metal heat-conducting blocks 10. Heat is transferred to the wall wiring cavity via the metal heat-conducting blocks 10 and the heat-conducting fins 5, and then to the wall. A rectangular frame 11 is fixedly connected to the outer surface of the end plate 3. A cryogenic gel sealing ring 12 is inlaid on the outer surface of the rectangular frame 11. A sealing groove for the cryogenic gel sealing ring 12 is opened in the middle of the outer surface of the rectangular frame 11. Through holes for fastening bolts 8 are opened on the left and right sides of the end plate 3. A strip-shaped opening is opened in the central area of the end plate 3 for inserting pluggable terminal 2 into the terminal block 1. The outer surface of the cryogenic gel sealing ring 12 is in close contact with the inner wall of the pre-reserved wiring cavity on the wall. It expands when exposed to water or moisture to prevent external moisture from entering the terminal. The terminal block 1 is placed in the pre-reserved wiring cavity in the wall. There is a 7cm gap between the outer surface of the terminal block 1 and the inner surface of the wiring cavity inside the wall. Protrusions 9 are fixedly connected to the left and right side walls of the terminal block 1. Lifting lugs 7 are fixed to the left and right side walls of the pluggable terminal 2. Threaded holes are provided inside the lifting lugs 7 and the protrusions 9. A fastening bolt 8 is screwed through the lifting lugs 7 and the protrusions 9.
[0021] Based on the above-described preferred technical solution, the workflow of this technical solution is explained as follows: When the electrical connection terminal for guiding the conductor through the wall is in operation, the terminal block 1 is first placed in the pre-reserved wiring cavity in the wall, maintaining a distance of 3-7cm between the outer surface of the terminal block 1 and the inner surface of the wiring cavity inside the wall. This distance provides space for possible subsequent maintenance and heat dissipation. Next, the head end of the pluggable terminal 2 is coupled and inserted into the front end of the terminal block 1 to achieve electrical connection between the wire harness 6 inside the wall and the wire harness 4 outside the wall. 3-5 wire harnesses 6 inside the wall are fixedly connected to the rear end face of the terminal block 1, and 3-5 wire harnesses 4 outside the wall are fixedly connected to the front end face of the pluggable terminal 2. During insertion, the protrusions 9 on the left and right sidewalls of the terminal block 1 correspond to the lifting lugs 7 on the left and right sidewalls of the pluggable terminal 2. Then, the fastening bolts 8 are passed through the threaded holes inside the lifting lugs 7 and protrusions 9 and tightened, making the connection between the terminal block 1 and the pluggable terminal 2 more secure. Simultaneously, the through holes on the end plate 3 for the fastening bolts 8 to pass through assist in positioning and installation. The end plate 3 is embedded in the wall, with a strip-shaped opening in its central area for the pluggable terminal 2 to be inserted into the terminal block 1. The low-temperature gel sealing ring 12 embedded in the rectangular frame 11 fixed to the outer surface of the end plate 3 will make tight contact with the inner wall of the pre-reserved wiring cavity on the wall. When exposed to water or a humid environment, the low-temperature gel sealing ring 12 self-expands to prevent external moisture from penetrating the terminal and protect the internal electrical connection from being affected. During the operation of the electrical connection terminal, the terminal block 1 generates heat. At this time, several metal heat-conducting blocks 10 embedded and fixed on the upper and lower surfaces of the terminal block 1 come into play. Since the terminal block 1 has openings for the upper and lower rows of metal heat-conducting blocks 10 to be embedded, and the inner sidewall of the opening is coated with thermal grease between the outer surface of the metal heat-conducting block 10, the heat can be transferred from the terminal block 1 to the metal heat-conducting blocks 10 more efficiently. The multiple heat-conducting fins 5 fixed on the upper or lower surfaces of the metal heat-conducting blocks 10 further dissipate the heat into the surrounding environment. Finally, the heat is transferred from the wiring cavity of the wall to the wall, avoiding the accumulation of heat that may affect the terminal block 1.
[0022] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.
Claims
1. An electrical connection terminal for guiding a body through a wall, comprising a row of mutually fixed terminal blocks (1) located inside the wall, characterized in that: The front side of the terminal block (1) is provided with a row of pluggable terminals (2) located outside the wall and inserted into the terminal block (1). The terminal block (1) and the pluggable terminals (2) are provided with an end plate (3) embedded in the wall. The rear end face of the terminal block (1) is fixedly connected with 3-5 wall-inner wire harnesses (6), and the front end face of the plug-in terminal (2) is fixedly connected with 3-5 wall-outer wire harnesses (4); wherein, the head end of the plug-in terminal (2) is coupled into the front end port of the terminal block (1) for wiring. The upper and lower surfaces of the terminal blocks (1) are each inlaid with a number of metal heat-conducting blocks (10), and the upper or lower surfaces of the metal heat-conducting blocks (10) that are far apart from each other are each fixed with a number of heat-conducting fins (5). A rectangular frame (11) is fixedly connected to the outer surface of the end plate (3), and a low-temperature gel sealing ring (12) is inlaid on the outer surface of the rectangular frame (11).
2. The electrical connection terminal for guiding a body through a wall according to claim 1, characterized in that: Each of the terminal blocks (1) has an opening for the upper and lower rows of metal heat-conducting blocks (10) to be embedded, and the inner sidewall of the opening is coated with thermal grease between the outer surface of the metal heat-conducting block (10).
3. The electrical connection terminal for guiding a body through a wall according to claim 1, characterized in that: The terminal block (1) is placed in the pre-reserved wiring cavity in the wall, and the outer surface of the terminal block (1) has a distance of 3-7cm from the inner surface of the wiring cavity inside the wall.
4. The electrical connection terminal for guiding a body through a wall according to claim 1, characterized in that: The left and right side walls of the terminal block (1) are fixedly connected with protrusions (9), and the left and right side walls of the plug-in terminal (2) are fixed with lugs (7), and the lugs (7) and protrusions (9) are provided with threaded holes.
5. The electrical connection terminal for guiding a body through a wall according to claim 4, characterized in that: A fastening bolt (8) is screwed through the interior of the lug (7) and the protrusion (9).
6. The electrical connection terminal for guiding a body through a wall according to claim 1, characterized in that: The end plate (3) has through holes on both the left and right sides for fastening bolts (8) to pass through.
7. The electrical connection terminal for guiding a body through a wall according to claim 1, characterized in that: A sealing groove for embedding a low-temperature gel sealing ring (12) is provided at the middle section of the outer surface of the rectangular frame (11).
8. The electrical connection terminal for guiding a body through a wall according to claim 1, characterized in that: The end plate (3) has a strip-shaped opening in the central area for inserting pluggable terminals (2) into the terminal block (1).
9. The electrical connection terminal for guiding a body through a wall according to claim 1, characterized in that: The outer surface of the low-temperature gel sealing ring (12) is in close contact with the inner wall of the pre-reserved wiring cavity on the wall.