Embedded conductive hot-melt connecting piece for PC (Poly Carbonate) component
By using embedded conductive hot-melt connecting pieces, and utilizing the pre-tightening force of shape memory alloy and conductive groove design, the problems of long construction cycle and insufficient reliability of electrical connections in traditional PC components are solved, achieving efficient and reliable conductive connections.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG MINGJIN CONSTRUCTION CO LTD
- Filing Date
- 2025-04-24
- Publication Date
- 2026-05-01
AI Technical Summary
Traditional electrical connection methods for PC components have long construction cycles and lack effective non-destructive testing methods, making it difficult to ensure connection reliability.
The embedded conductive hot-melt connecting piece is used. The pre-tension spring made of shape memory alloy softens during construction to facilitate embedding. After hot melting, it heats up and expands to generate pre-tension force, ensuring uniform pressure on the contact surface between the connecting piece and the PC component. The conductive groove design facilitates the installation of the conductive piece and adapts to different thicknesses.
It significantly improves the stability and reliability of the connection, increases installation efficiency, and ensures the robustness of the conductive connection and the versatility of the equipment.
Smart Images

Figure CN224191249U_ABST
Abstract
Description
An embedded conductive hot melt connector for PC components Technical Field
[0001] This utility model relates to the field of conductive hot melt connector technology, specifically a conductive hot melt connector embedded in a PC component. Background Technology
[0002] With the development of industrialized construction, prefabricated buildings have gradually become mainstream due to their advantages such as high efficiency, environmental friendliness, and controllable quality. In prefabricated buildings, precast concrete (PC) components serve as the core unit, and the reliability of their electrical connection technology directly affects the overall performance and safety of the building. However, traditional electrical connection methods for PC components have many limitations, making it difficult to meet the demands of modern buildings for efficiency, quality, and functional integration.
[0003] The installation process of this conductive sheet requires multiple steps, including steel bar processing, sleeve pre-embedding, and on-site grouting. The construction period is long, and the quality of the grouting material and the grouting process are strictly required. The density of the grouting directly affects the connection quality, but there is a lack of effective non-destructive testing methods, making it difficult to ensure the connection reliability of each joint. Summary of the Invention
[0004] (a) Technical problems to be solved
[0005] To address the shortcomings of existing technologies, this utility model provides an embedded conductive hot-melt connector for PC components, which solves the problems mentioned in the background section.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, this utility model provides the following technical solution: an embedded conductive hot-melt connecting piece for PC components, comprising an embedded connecting piece in the shape of a regular hexagonal snowflake, an arched support rod with an opening facing outwards within the embedded connecting piece, an arched support rod with an arched shape at each of the six corners within the arched support rod, the arched support rods being arched and arranged in a circular array, a central support column fixedly located at the center of the embedded connecting piece, a stabilizing connecting plate fixedly connected between the four corners of the central support column and the front end of the arched support rod, a connecting groove with an opening facing outwards within the stabilizing connecting plate, spring connectors fixedly located on both sides of the connecting groove, a preload spring fixedly located between the spring connectors on both sides, a plurality of hand-held grooves with an opening facing outwards on the side of the embedded connecting piece, and a plurality of bottom grooves with an opening facing outwards within the embedded connecting piece.
[0008] Preferably, the central support column contains six support frames arranged in a circular array, and conductive grooves are fixed between the support frames on each side.
[0009] Preferably, a telescopic base is fixedly provided at the top of the conductive groove near the support frame.
[0010] Preferably, the telescopic base is provided with a telescopic rod that can telescopically move at its top, and a conductive sheet mounting end is fixedly provided at the top of the telescopic rod.
[0011] Preferably, the embedded connecting piece has an upward-opening mounting thread groove at each of its hexagonal corners, and the mounting thread groove has a mounting thread inside.
[0012] Preferably, the top surface of the embedded connector is coated with a composite coating.
[0013] (III) Beneficial Effects
[0014] This utility model provides an embedded conductive hot-melt connector for PC components. It has the following advantages:
[0015] 1. This solution uses shape memory alloy to make preload springs. By utilizing its properties of softening during construction for easy embedding and expanding upon heating after melting to generate preload, it ensures uniform pressure on the contact surface between the connecting piece and the PC component, significantly improving the stability and reliability of the connection.
[0016] 2. This solution uses a conductive groove design to facilitate the placement of conductive sheets, improving installation efficiency. It also ensures a stable conductive connection between the conductive sheets and the connecting sheets. Furthermore, the design of the telescopic base and telescopic rod accommodates conductive sheets of different thicknesses, improving the versatility of the equipment and meeting the needs of different application scenarios. Attached Figure Description
[0017] Figure 1 is a schematic diagram of the external structure of this utility model;
[0018] Figure 2 is a schematic diagram of the main structure of this utility model;
[0019] Figure 3 is a schematic diagram of the structure of this utility model from below;
[0020] Figure 4 is a top view of the structure of this utility model;
[0021] Figure 5 is an enlarged structural schematic diagram of the conductive sheet mounting end component in Figure 1 of this utility model.
[0022] In the diagram: 101, Embedded connecting piece; 102, Composite coating; 103, Mounting threaded groove; 104, Arched support rod; 105, Connecting groove; 106, Support frame; 107, Conductive groove; 108, Conductive sheet mounting end; 109, Handheld groove; 110, Bottom groove; 111, Preload spring; 112, Spring connector; 113, Stabilizing connecting plate; 114, Central support column; 115, Telescopic base; 116, Telescopic rod. Detailed Implementation
[0023] This utility model embodiment provides an embedded conductive hot-melt connecting piece for PC components, as shown in Figures 1-5. It includes an embedded connecting piece 101, which is hexagonal in shape and snowflake-like. The embedded connecting piece 101 has outward-facing arched support rods 104 within it. Each arched support rod 104 is positioned at one of the six corners of the embedded connecting piece 101, forming an arch shape. The arched support rods 104 are arranged in a circular array. A central support column 114 is fixedly positioned at the center of the embedded connecting piece 101. A stabilizing connecting plate 113 is fixedly connected between the four corners of the central support column 114 and the front end of the arched support rods 104. The stabilizing connecting plate 113 has outward-facing connecting grooves 105 within it. Spring connectors 112 are fixedly installed on both sides of the connecting grooves 105. A preload spring 111 is fixedly installed between the spring connectors 112 on both sides. The embedded connecting piece 101 has several outward-facing hand-held grooves 109 on its side and several outward-facing bottom grooves 110.
[0024] It should be further explained that the preload spring 111 is made of shape memory alloy. The preload spring 111 softens during construction to facilitate embedding. After being heated and expanded, it generates preload force to ensure uniform pressure on the contact surface.
[0025] Furthermore, the central support column 114 is provided with six support frames 106, which are arranged in a circular array, and conductive grooves 107 are fixed between the support frames 106 on each side.
[0026] It should be further explained that the height of the conductive groove 107 is slightly lower than that of the support frame 106, thus forming a groove that facilitates the placement of conductive sheets.
[0027] Furthermore, a telescopic base 115 is fixedly provided at the top of the conductive groove 107 near the support frame 106.
[0028] Furthermore, the top of the telescopic base 115 is provided with a telescopic rod 116 that can telescopically move, and the top of the telescopic rod 116 is fixedly provided with a conductive sheet mounting end 108.
[0029] It should be further explained that the top of the conductive sheet mounting end 108 is used for stable installation with the conductive sheet.
[0030] Furthermore, the embedded connecting piece 101 has an upward-opening mounting thread groove 103 on each of its hexagonal corners, and the mounting thread groove 103 has a mounting thread inside.
[0031] Furthermore, the top surface of the embedded connector 101 is coated with a composite coating 102.
[0032] It should be further explained that the composite coating 102 is made of composite material, and the embedded connecting piece 101 is made of graphene-carbon fiber / polymer ternary composite material. This material not only has good electrical conductivity, but also excellent mechanical properties and corrosion resistance, making it suitable for making embedded conductive hot melt connecting pieces.
[0033] When using this solution, the PC component is first surface treated to ensure that the surface is flat, clean, and free of oil and impurities. At the same time, the connecting piece is inspected to ensure that it is undamaged and deformed. Then, the connecting piece is aligned with the embedding position of the embedded connecting piece 101, and pressure is gently applied to make the connecting piece gradually embed into the embedded connecting piece 101. Since the shape memory alloy has softening properties at a specific temperature, the alloy material becomes soft and easy to embed.
[0034] After embedding, a hot-melt process is performed to heat up and expand the shape memory alloy, generating a pre-tightening force to ensure uniform pressure on the contact surface between the connecting piece and the PC component. Special heating equipment is used to heat the connecting piece, and the heating temperature is controlled above the phase transformation temperature of the shape memory alloy, generally between 700-800℃. During the heating process, the temperature needs to be strictly controlled to avoid excessive temperature from causing a decrease in the performance of the alloy material or damage.
[0035] As the temperature rises, the shape memory alloy undergoes a martensitic inverse phase transformation and gradually recovers to its original shape. During the recovery process, the alloy material expands and generates a preload. This preload ensures that the connecting piece and the PC component are in close contact, ensuring uniform pressure on the contact surface.
[0036] Finally, the conductive sheet is embedded into the groove of the conductive groove 107 according to its shape, and the conductive sheet is installed and connected to the corresponding conductive sheet mounting end 108. The installation work is completed by adapting to conductive sheets of different thicknesses through the telescopic rod 116. After the installation is completed, the contact between the connecting piece and the conductive sheet is checked to ensure good contact, no looseness or offset, so as to achieve a stable conductive connection.
[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An embedded conductive hot-melt connector for PC components, comprising an embedded connector (101), characterized in that: The embedded connecting piece (101) is provided with an outward-facing arched support rod (104). The arched support rod (104) is provided at a hexagonal position and is arranged in a circular array. A central support column (114) is fixedly provided at the center of the embedded connecting piece (101). A stable connecting plate (113) is fixedly connected between the four corners of the central support column (114) and the front end of the arched support rod (104). The stable connecting plate (113) is provided with an outward-facing connecting groove (105). Spring connectors (112) are fixedly provided on both sides of the connecting groove (105). A preload spring (111) is fixedly provided between the spring connectors (112) on both sides. The embedded connecting piece (101) is provided with several outward-facing hand slots (109) on its side and several outward-facing bottom grooves (110).
2. The embedded conductive hot-melt connector for PC components according to claim 1, characterized in that: The central support column (114) is provided with six support frames (106), which are arranged in a circular array. Conductive grooves (107) are fixed between the support frames (106) on each side.
3. The embedded conductive hot-melt connector for PC components according to claim 2, characterized in that: A telescopic base (115) is fixedly provided on the top of the conductive groove (107) near the side of the support frame (106).
4. The embedded conductive hot-melt connector for PC components according to claim 3, characterized in that: The telescopic base (115) is provided with a telescopic rod (116) at the top, and a conductive sheet mounting end (108) is fixedly provided at the top of the telescopic rod (116).
5. The embedded conductive hot-melt connector for PC components according to claim 1, characterized in that: The embedded connecting piece (101) has an upward-opening mounting threaded groove (103) on each of its hexagonal corners, and the mounting threaded groove (103) is provided with mounting threads.
6. The embedded conductive hot-melt connector for PC components according to claim 1, characterized in that: The top surface of the embedded connecting piece (101) is coated with a composite coating (102).