Ethylene-propylene-diene monomer sealing strip

Abstract

The utility model discloses an ethylene propylene diene monomer sealing strip which comprises a sealing strip body, an oval through cavity is formed in one side of the interior of the sealing strip body, positioning clamping strips are arranged on the upper end face and the lower end face of the other side of the sealing strip body, and an arc-shaped elastic supporting piece is fixedly installed on one side of the interior of the oval through cavity. According to the ethylene-propylene-diene monomer sealing strip, the sealing strip body, the positioning clamping strip, the oval through cavity, the rubber strip and the arc-shaped elastic supporting piece are used in cooperation, and the arc-shaped elastic supporting piece can tightly abut against the sealing strip body on the contact face through the rubber strip by means of elastic deformation of the arc-shaped elastic supporting piece; according to the sealing strip, the sealing performance of the sealing strip body is ensured, the design is simple and effective, the sealing performance of the sealing strip body can be ensured, and compared with an existing scheme that the sealing performance is improved by forming a negative pressure environment, the structure has the advantages of being low in failure rate and easy to maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing strips, in particular to an EPDM sealing strip. Background Art

[0002] Since the 1980s, sealing strips have been widely used in industries such as automobiles, doors and windows, cabinets, refrigerators, and containers. The materials used include rubber, paper, metal, and plastic. In order to meet the needs of different industries, special automotive sealing strips, mechanical sealing strips, and door and window sealing strips have been developed for the fields of automobiles, machinery, doors and windows, etc. However, the existing flame-retardant EPDM door and window sealing strips have poor sealing properties after installation.

[0003] The Chinese patent publication number is CN219387743U. It discloses an EPDM flame retardant sealing strip, which includes: a body, a card slot is arranged on the body, and an adsorption eave is symmetrically arranged on the body. The utility model is that the body is squeezed after the door is closed, and the air between the body and the contact surface and the air in the negative pressure cavity are discharged through the exhaust hole under the squeeze, so that negative pressure is generated in the negative pressure cavity, so that the body is tightly adsorbed on the contact surface, which can improve the sealing effect.

[0004] With respect to the above-mentioned related technologies, the sealing strip has some shortcomings. In actual use, the sealing strip on the window is directly exposed to the external environment, so the anti-return plate of the exhaust hole may be blocked or damaged, causing the exhaust hole to fail to work properly, affecting the pressure balance and sealing effect inside the negative pressure chamber. At the same time, regular maintenance and cleaning are required to ensure the smooth flow of the air intake and exhaust holes, otherwise it may affect the normal operation of the sealing strip, resulting in low stability in the use of the sealing strip. Therefore, it is necessary to provide an EPDM sealing strip to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of the utility model is to provide an EPDM sealing strip to solve at least one technical problem existing in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An EPDM sealing strip, comprising:

[0008] A sealing strip body, wherein an elliptical through cavity is arranged on one side of the interior of the sealing strip body, and positioning clips are arranged on the upper and lower end surfaces of the other side of the sealing strip body, and an arc-shaped elastic supporting sheet is fixedly installed on one side of the interior of the elliptical through cavity, and a rubber strip is fixedly connected between the outer surface of the arc-shaped elastic supporting sheet and the other side of the interior of the elliptical through cavity.

[0009] Preferably, a U-shaped groove is provided on the other side of the sealing strip body, and a U-shaped elastic supporting sheet matching with the U-shaped groove is clamped inside the U-shaped groove.

[0010] Preferably, a V-shaped elastic supporting piece is fixedly installed inside the U-shaped elastic supporting piece.

[0011] Preferably, a plurality of racks are provided on the upper and lower sides of the outer surface of the U-shaped elastic support piece, and tooth grooves corresponding to the positions and quantities of the racks are opened on the upper and lower sides of the inner wall of the U-shaped groove, and the tooth grooves are engaged with the racks.

[0012] Preferably, the U-shaped elastic support sheet, the V-shaped elastic support sheet and the arc-shaped elastic support sheet are all made of highly tear-resistant silicone rubber.

[0013] Preferably, the sealing strip body, the positioning clip strip, the U-shaped groove and the elliptical through cavity are an integrally formed structure.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model uses a sealing strip body, a positioning card strip, an elliptical through cavity, a rubber strip and an arc-shaped elastic support sheet in combination. Relying on the elastic deformation of the arc-shaped elastic support sheet, the arc-shaped elastic support sheet will press the sealing strip body tightly against the contact surface through the rubber strip to ensure the sealing of the sealing strip body. This design is simple and effective, and can ensure the sealing of the sealing strip body. Compared with the existing solution that relies on forming a negative pressure environment to increase the sealing, this structure has the advantages of low failure rate and easy maintenance, and provides higher stability.

[0016] 2. The utility model uses a U-shaped groove, a U-shaped elastic support sheet, a tooth groove and a rack in coordination. The U-shaped elastic support sheet can provide an elastic support effect on the U-shaped groove. The elasticity released by the U-shaped elastic support sheet can make the positioning card strip and the card slot on the window fit more tightly. This elastic support effect helps to avoid the loosening of the local position of the positioning card strip during long-term use, thereby improving the stability of the positioning card strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the sealing strip body in the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the rubber strip and the arc-shaped elastic support sheet in the utility model;

[0020] Figure 4It is a schematic structural diagram of a U-shaped elastic support sheet and a V-shaped elastic support sheet in the utility model.

[0021] In the figure: 1. Sealing strip body; 2. Positioning card strip; 3. U-shaped groove; 4. U-shaped elastic support sheet; 5. Oval through cavity; 6. V-shaped elastic support sheet; 7. Rubber strip; 8. Arc-shaped elastic support sheet; 9. Tooth groove; 10. Rack. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-4 , an embodiment provided by the utility model:

[0027] An EPDM sealing strip, comprising:

[0028] A sealing strip body 1 is provided with an elliptical through cavity 5 on one side of the sealing strip body 1, and positioning clips 2 are provided on the upper and lower end surfaces of the other side of the sealing strip body 1. An arc-shaped elastic supporting piece 8 is fixedly installed on one side of the inside of the elliptical through cavity 5, and a rubber strip 7 is fixedly connected between the outer surface of the arc-shaped elastic supporting piece 8 and the other side of the inside of the elliptical through cavity 5.

[0029] A U-shaped groove 3 is provided on the other side of the sealing strip body 1 , and a U-shaped elastic supporting sheet 4 adapted thereto is clamped inside the U-shaped groove 3 .

[0030] In one of the embodiments, a V-shaped elastic support sheet 6 is fixedly installed inside the U-shaped elastic support sheet 4, which improves the structural strength of the U-shaped elastic support sheet 4 and makes it have a more stable supporting function.

[0031] In one of the preferred embodiments, a plurality of racks 10 are provided on the upper and lower sides of the outer surface of the U-shaped elastic support sheet 4, and tooth grooves 9 corresponding to the positions and quantities of the racks 10 are opened on the upper and lower sides of the inner wall of the U-shaped groove 3, and the tooth grooves 9 are clamped with the racks 10, thereby improving the stability of the installation of the U-shaped elastic support sheet 4 inside the U-shaped groove 3.

[0032] In one of the embodiments, the U-shaped elastic support sheet 4, the V-shaped elastic support sheet 6 and the arc-shaped elastic support sheet 8 are all made of high-tear-resistant silicone rubber. The high-tear-resistant silicone rubber has excellent elasticity and can effectively withstand deformation and restore its original state, thereby ensuring the stability and durability of the elastic support sheet during use.

[0033] In one of the preferred embodiments, the sealing strip body 1, the positioning clip strip 2, the U-shaped groove 3 and the elliptical through cavity 5 are an integrally formed structure, which improves the structural stability of the sealing strip.

[0034] The working principle of the utility model is as follows: when the sealing strip is in use, the sealing strip body 1 is clamped on the side of the window by the positioning card strip 2; when the window is closed, the sealing strip body 1 is directly in contact with the contact surface, and the elliptical through cavity 5 is squeezed by the contact surface, causing the elliptical through cavity 5 to deform; the deformation of the elliptical through cavity 5 directly drives the arc-shaped elastic supporting piece 8 to deform through the rubber strip 7; when the window is completely closed, relying on the elastic deformation of the arc-shaped elastic supporting piece 8, the arc-shaped elastic supporting piece 8 will press the sealing strip body 1 tightly against the contact surface through the rubber strip 7 to ensure the sealing of the sealing strip body 1; this design is simple and effective, which can ensure the sealing of the sealing strip body 1; compared with the existing solution that relies on forming a negative pressure environment to increase the sealing, this structure has the advantages of low failure rate and easy maintenance, and provides higher stability.

[0035] The sealing strip body 1 is directly connected to the side of the window by the positioning strip 2, and after the positioning strip 2 is connected to the slot on the window, a U-shaped groove 3 is set inside the positioning strip 2, and a U-shaped elastic support sheet 4 is installed inside the U-shaped groove 3. The U-shaped elastic support sheet 4 can elastically support the U-shaped groove 3, and the elasticity released by the U-shaped elastic support sheet 4 can make the positioning strip 2 and the slot on the window fit more tightly. This elastic support effect helps to avoid loosening of the local position of the positioning strip 2 under long-term use, thereby improving the stability of the positioning strip 2.

[0036] The above is only an embodiment of the utility model, and the common sense such as the known specific structure and characteristics in the scheme is not described too much here. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model. Any figure mark in the claims should not be regarded as limiting the claims involved.

Claims

1. An EPDM sealing strip, characterized in that: It includes: A sealing strip body (1), wherein an elliptical through cavity (5) is provided on one side of the interior of the sealing strip body (1), and positioning clips (2) are provided on the upper and lower end surfaces of the other side of the sealing strip body (1), an arc-shaped elastic support sheet (8) is fixedly mounted on one side of the interior of the elliptical through cavity (5), and a rubber strip (7) is fixedly connected between the outer surface of the arc-shaped elastic support sheet (8) and the other side of the interior of the elliptical through cavity (5).

2. The EPDM sealing strip according to claim 1, characterized in that: A U-shaped groove (3) is provided on the other side of the sealing strip body (1), and a U-shaped elastic supporting sheet (4) matching the U-shaped groove (3) is clamped inside the U-shaped groove (3).

3. The EPDM sealing strip according to claim 2, characterized in that: A V-shaped elastic support piece (6) is fixedly mounted inside the U-shaped elastic support piece (4).

4. The EPDM sealing strip according to claim 2, characterized in that: A plurality of racks (10) are provided on the upper and lower sides of the outer surface of the U-shaped elastic support sheet (4), and tooth grooves (9) corresponding to the positions and numbers of the racks (10) are provided on the upper and lower sides of the inner wall of the U-shaped groove (3), and the tooth grooves (9) are snap-fitted to the racks (10).

5. The EPDM sealing strip according to claim 2, characterized in that: The U-shaped elastic support sheet (4), the V-shaped elastic support sheet (6) and the arc-shaped elastic support sheet (8) are all made of highly tear-resistant silicone rubber.

6. The EPDM sealing strip according to claim 2, characterized in that: The sealing strip body (1), the positioning clip strip (2), the U-shaped groove (3) and the elliptical through cavity (5) are an integrally formed structure.

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