Ethylene-propylene-diene monomer rubber and metal framework composite sealing strip structure
By using a composite structure of EPDM rubber and a metal skeleton, combined with sealing and installation components, the problem of easy deformation and displacement of the sealing strip under high load and frequent vibration is solved, thus achieving the stability and installation reliability of the sealing strip.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEBEI HEHUI MACHINERY TECHNOLOGY CO LTD
- Filing Date
- 2025-06-04
- Publication Date
- 2026-05-01
AI Technical Summary
Existing pure rubber sealing strips are prone to deformation and displacement under high loads or frequent vibrations, leading to sealing failure. Metal sealing strips lack elasticity and are prone to noise or corrosion. Sealing strips made of a single material have an imbalance between strength and elasticity, poor environmental adaptability, and low installation reliability.
The composite structure of EPDM rubber and metal skeleton is adopted. By using thermoplastic rubber pads on the surface of the metal skeleton, combined with sealing components and installation components, including H-shaped clamps and T-shaped clamps, a tight connection and anti-displacement of the metal skeleton and the fixing components are achieved.
It achieves stability and sealing performance of the sealing strip under high load and frequent vibration, avoids noise and corrosion, and improves installation reliability and environmental adaptability.
Smart Images

Figure CN224188018U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of building materials technology, and in particular relates to a composite sealing strip structure of EPDM rubber and metal skeleton. Background Technology
[0002] In building doors, windows, curtain walls, interior partitions, and other applications, pure rubber sealing strips, while possessing good elasticity, lack rigid support in order to seal the gaps between fixed and moving components. Under high loads or frequent vibrations, they are prone to deformation and displacement, leading to sealing failure. Metal sealing strips, while having high strength, lack elasticity and cannot adapt to interface deformation. They are also prone to generating noise or corrosion due to friction. Therefore, there is a need for a composite sealing strip structure of EPDM rubber and metal skeleton. Through material composite and structural innovation, the problems of imbalance between strength and elasticity, poor environmental adaptability, and low installation reliability of single-material sealing strips are effectively solved. Utility Model Content
[0003] The purpose of this invention is to provide a composite sealing strip structure of EPDM rubber and metal skeleton. Through material composite and structural innovation, it effectively solves the problems of imbalance between strength and elasticity, poor environmental adaptability and low installation reliability of single-material sealing strips.
[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A composite sealing strip structure of EPDM rubber and metal skeleton includes a metal skeleton: the surface of the metal skeleton is thermoplasticized with a rubber pad, and rectangular grooves adapted to the rubber pad are opened on both sides of the metal skeleton. A sealing component is provided on the top of the rubber pad. The sealing component includes a sealing gasket integrally formed with the rubber pad by thermoplastic molding. A first metal plate is fixedly connected to the top of the inner cavity of the sealing gasket, and a second metal plate is fixedly connected to the top of the rubber pad. The second metal plate and the first metal plate slide relative to each other. Compression holes are opened at both ends of the front side of the sealing gasket, and an installation component is provided at the bottom of the metal skeleton.
[0005] Preferably, the mounting assembly includes lower sealing strips disposed on both sides of the bottom of the metal frame, the bottom of the metal frame is integrally cast with an H-shaped clamping plate, and the surface of the H-shaped clamping plate is provided with insert strips.
[0006] Preferably, two T-shaped retaining strips are integrally cast on both sides of the bottom of the metal frame, and T-shaped retaining grooves are provided on both sides of the top of the lower sealing strip, with the T-shaped retaining grooves fitting onto the surface of the T-shaped retaining strips.
[0007] Preferably, the top of the insert has an H-shaped groove, which is fitted onto the surface of the H-shaped plate.
[0008] Preferably, both sides of the insert are integrally injection molded with anti-detachment clamping plates.
[0009] The beneficial effects of this utility model are:
[0010] 1. This utility model provides a connection structure for fixing the metal frame to the fixed component through the setting of the installation component. At the same time, with the cooperation of the rubber gasket and sealing component, the metal frame and the moving component have a tight sealing connection structure, which can achieve the purpose of tight sealing and preventing displacement and leakage.
[0011] 2. Through the installation components, the combination of the insert strip and the anti-detachment plate in this utility model plays a role in connecting and fixing the metal frame and the fixed component. At the same time, the combination of the lower sealing strip, the T-shaped strip and the T-shaped groove plays a role in sealing the metal frame and the fixed component, thereby improving the sealing performance between the metal frame and the fixed component.
[0012] 3. This utility model uses the H-shaped card plate and H-shaped card slot in combination to connect and fix the inlay strip and the metal frame, thereby improving the connection stability between the inlay strip and the metal frame. Attached Figure Description
[0013] in:
[0014] Figure 1 This is a front view schematic diagram of one embodiment of the present utility model;
[0015] Figure 2 This is a perspective view of one embodiment of the present utility model;
[0016] Figure 3 This is an exploded perspective view of a rubber gasket, sealing assembly, and mounting assembly according to one embodiment of the present invention.
[0017] Figure 4 This is one embodiment of the present utility model. Figure 3 A magnified view of point A in the middle.
[0018] The attached diagram lists the components represented by each number as follows:
[0019] 1. Metal frame, 2. Rubber gasket, 3. Sealing assembly, 31. Sealing gasket, 32. First metal plate, 33. Second metal plate, 34. Compression hole, 4. Mounting assembly, 41. Lower sealing strip, 42. T-shaped retaining strip, 43. T-shaped retaining groove, 44. Embedding strip, 45. Anti-detachment retaining plate, 5. Rectangular groove, 6. H-shaped retaining plate, 7. H-shaped retaining groove. Detailed Implementation
[0020] In the following description, embodiments of the composite sealing strip structure of EPDM rubber and metal skeleton of this utility model will be described with reference to the accompanying drawings.
[0021] Figures 1-4 This invention illustrates a composite sealing strip structure of EPDM rubber and metal skeleton according to an embodiment of the present invention. It includes a metal skeleton 1 with a rubber pad 2 thermoplastically formed on its surface. Rectangular grooves 5, adapted to the rubber pad 2, are provided on both sides of the metal skeleton 1. A sealing assembly 3 is provided on the top of the rubber pad 2, including a sealing gasket 31 integrally formed with the rubber pad 2. A first metal plate 32 is fixedly connected to the top of the inner cavity of the sealing gasket 31, and a second metal plate 33 is fixedly connected to the top of the rubber pad 2. The second metal plate 33 and the first metal plate 32 slide relative to each other. Compression holes 34 are provided at both ends of the front side of the sealing gasket 31. An installation assembly 4 is provided at the bottom of the metal skeleton 1, including lower sealing strips 41 on both sides of the bottom of the metal skeleton 1. An H-shaped retaining plate 6 is integrally cast at the bottom of the metal skeleton 1, with inserts 44 on the surface of the H-shaped retaining plate 6. H-shaped inserts 44 are provided on the top of the inserts 44. The H-shaped slot 7 is fitted onto the surface of the H-shaped plate 6. Through the cooperation of the H-shaped plate 6 and the H-shaped slot 7, the insert 44 and the metal frame 1 are connected and fixed, thereby improving the connection stability between the insert 44 and the metal frame 1. Both sides of the insert 44 are integrally molded with anti-detachment plates 45. Both sides of the bottom of the metal frame 1 are integrally cast with two T-shaped strips 42. Both sides of the top of the lower sealing strip 41 are provided with T-shaped slots 43, which are fitted onto the surface of the T-shaped strips 42. Through the setting of the installation component 4, the cooperation of the insert 44 and the anti-detachment plates 45 plays a role in connecting and fixing the metal frame 1 and the fixing component. At the same time, the cooperation of the lower sealing strip 41, the T-shaped strips 42 and the T-shaped slots 43 plays a sealing role between the metal frame 1 and the fixing component, improving the sealing performance between the metal frame 1 and the fixing component.
[0022] Working Principle: In use, the H-shaped slot 7 is first fitted onto the surface of the H-shaped plate 6, connecting the insert strip 44 and the metal frame 1. The lower sealing strip 41 is moved to the bottom of the metal frame 1, and the T-shaped slot 43 is fitted onto the surface of the T-shaped strip 42, thus installing and fixing the lower sealing strip 41. The user uses the insert strip 44 and the anti-detachment plate 45 together to install the sealing strip structure in the groove position of the fixing component. The elastic deformation capability of the anti-detachment plate 45 ensures installation stability, while ensuring that the surface of the lower sealing strip 41 is tightly fitted to the surface of the fixing component. During the process, the surface of the movable component that is compatible with the fixed component presses against the surface of the sealing gasket 31, causing the sealing gasket 31 to be deformed by compression. At the same time, the compression hole 34 is compressed and its inner diameter is reduced. During the compression of the sealing gasket 31, the upper first metal plate 32 slides and is in a relative sliding state with the lower first metal plate 32, thereby allowing the sealing gasket 31 to be horizontally compressed. This ensures that the surface of the sealing gasket 31 is in close contact with the surface of the movable component, preventing the sealing gasket 31 from shifting during the compression process and causing gaps in the sealing position.
[0023] In summary, the composite sealing strip structure of EPDM rubber and metal skeleton, through the setting of the installation component 4, provides a connection structure for the metal skeleton 1 to be fixed with the fixed component. At the same time, with the cooperation of the rubber pad 2 and the sealing component 3, the metal skeleton 1 and the moving component have a tight sealing connection structure, which can achieve the purpose of tight sealing and preventing displacement and leakage.
Claims
1. A structure of a metal skeleton composite sealing strip of ethylene propylene diene rubber, characterized in that, The metal frame (1) is thermoplasticized with a rubber pad (2) on its surface. Both sides of the metal frame (1) are provided with rectangular grooves (5) that are adapted to the rubber pad (2). A sealing component (3) is provided on the top of the rubber pad (2). The sealing component (3) includes a sealing gasket (31) that is thermoplastically integrally formed with the rubber pad (2). A first metal plate (32) is fixedly connected to the top of the inner cavity of the sealing gasket (31). A second metal plate (33) is fixedly connected to the top of the rubber pad (2). The second metal plate (33) and the first metal plate (32) slide relative to each other. Compression holes (34) are provided at both ends of the front side of the sealing gasket (31). An installation component (4) is provided at the bottom of the metal frame (1).
2. The EPDM rubber to metal skeleton composite sealing strip structure according to claim 1, characterized in that, The mounting assembly (4) includes lower sealing strips (41) disposed on both sides of the bottom of the metal frame (1), and the bottom of the metal frame (1) is integrally cast with an H-shaped clamping plate (6), and the surface of the H-shaped clamping plate (6) is provided with insert strips (44).
3. The EPDM rubber to metal skeleton composite seal strip structure according to claim 2, characterized in that, The bottom of the metal frame (1) has two integrally cast T-shaped clips (42) on both sides. The top of the lower sealing strip (41) has T-shaped slots (43) on both sides. The T-shaped slots (43) are fitted onto the surface of the T-shaped clips (42).
4. The EPDM rubber to metal skeleton composite sealing strip structure according to claim 3, characterized in that, The top of the insert (44) is provided with an H-shaped slot (7), which is fitted onto the surface of the H-shaped plate (6).
5. The EPDM rubber to metal skeleton composite seal strip structure according to claim 4, characterized in that, Both sides of the insert (44) are integrally injection molded with anti-detachment plates (45).