Seal and door frame

Abstract

The application provides a sealing strip and a door frame, and belongs to the technical field of sealing elements. The sealing strip comprises a sealing strip body and a supporting framework. The two side walls of the sealing strip body are respectively abutted on a door frame vertical stand and a door frame stop strip. The supporting framework comprises a fixed section and a connecting section. The fixed section and the connecting section are respectively located on the inner and outer sides of the sealing strip body. The fixed section is fixedly connected with the sealing strip body. An installation groove is formed on the outer side wall of the door frame vertical stand. The connecting section is inserted into the installation groove. The two sides of the connecting section in the length direction are respectively provided with a rigid barb and an elastic clamping piece. The rigid barb and the elastic clamping piece are respectively abutted on the two inner walls opposite to the installation groove. The sealing strip provided by the application is abutted on the two inner walls opposite to the installation groove through the rigid barb and the elastic clamping piece. The elastic deformation of the elastic clamping piece is relied on to increase the acting force between the rigid barb and the inner wall of the installation groove, so that a firm mechanical locking is formed between the sealing strip and the door frame vertical stand, and the sealing strip is effectively prevented from falling off the door frame.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of sealing elements, and more particularly relates to a sealing strip and a door frame adopting the same. BACKGROUND

[0002] The door frame sealing strip is mainly used for sealing mechanisms on plastic steel, aluminum alloy, wood and other doors and windows, and plays an important role in waterproofing, sealing and energy saving. Some also have sound insulation, dustproof, insect-proof, anti-freezing, warm-keeping, fireproof and other functions.

[0003] In current family life, the door frame sealing strip is mostly used in kitchens, toilets, front doors and floor-to-ceiling windows, and therefore requires good air tightness, high wear resistance, durability, strong tensile strength and anti-aging properties.

[0004] The door frame includes a door frame upright and a door frame stop bar. Since there are gaps between the door leaf and the door frame upright and the door frame stop bar, the prior art patent with the application number 202423092926.6 discloses a KS6319 sealing strip. The sealing strip seals the gaps between the door frame upright and the door frame stop bar and the door leaf, and is fixedly connected with the door frame upright and the door frame stop bar through an adhesive. Since the sealing strip is frequently impacted by the door leaf, the adhesive is prone to opening, which causes the sealing strip to fall off the door frame. CONTENT OF THE UTILITY MODEL

[0005] The application aims to provide a sealing strip, and aims to solve the problem that the existing sealing strip is prone to falling off the door frame.

[0006] To achieve the above-mentioned purpose, the application adopts the technical scheme of providing a sealing strip, which includes a sealing strip body and a support framework. The two side walls of the sealing strip body are respectively abutted on the door frame upright and the door frame stop bar. The support framework includes a fixed segment and a connecting segment, which are respectively located on the inner and outer sides of the sealing strip body. The fixed segment is fixedly connected with the sealing strip body. An installation groove is formed on the outer side wall of the door frame upright. The connecting segment is inserted into the installation groove. The two sides of the connecting segment in the length direction are respectively provided with a rigid barb and an elastic clamping piece. The rigid barb and the elastic clamping piece are respectively abutted on the two inner walls opposite to the installation groove.

[0007] In a possible implementation manner, the rigid barb and the connecting segment are in an integral molding structure.

[0008] In a possible implementation manner, the elastic clamping piece is arranged at an angle with the connecting segment and is inclined to the side close to the sealing strip body.

[0009] In one possible implementation, the sealing strip body includes a first support portion and a second support portion, the first support portion and the second support portion respectively corresponding to the door frame stop strip and the door frame upright, the fixing section is located inside the first support portion, and the fixing section is provided with a reinforcing strip extending towards the second support portion.

[0010] In one possible implementation, the end of the fixed segment away from the connecting segment is provided with a limiting protrusion.

[0011] In one possible implementation, the first support portion and the second support portion are respectively provided with a first sealing portion and a second sealing portion at their ends that are far apart from each other. The first sealing portion and the second sealing portion are both corresponding to the door leaf. The first support portion, the second support portion, the first sealing portion and the second sealing portion form a receiving cavity. A notch is provided between the first sealing portion and the second sealing portion.

[0012] In one possible implementation, a magnetic strip is provided inside the first sealing part, and the magnetic strip corresponds to a magnetic attracting element inside the door leaf.

[0013] In one possible implementation, the sealing strip body is composed of foam material and a film covering the outside of the foam material, and the magnetic strip is fixedly connected to the inner wall of the film by an adhesive.

[0014] In one possible implementation, the thickness of the first sealing portion is greater than the thickness of the second sealing portion.

[0015] The solution presented in this application, compared with the prior art, provides a sealing strip in which the sealing strip body abuts against the door frame upright and the door frame stop strip via its two side walls, thereby achieving a seal between them. The support frame is divided into two sections: a fixed section and a connecting section. The fixed section is located inside the sealing strip body and is fixedly connected to it, while the connecting section is located outside the sealing strip body and is inserted into the mounting groove on the door frame upright. Rigid barbs and elastic clips are provided on both sides along the length of the connecting section. When the rigid barbs and elastic clips enter the mounting groove along with the connecting section, they abut against the two inner walls of the mounting groove, and the elastic deformation generated by the elastic clips themselves increases the force between the rigid barbs and the inner wall of the mounting groove, thereby forming a firm mechanical lock between the sealing strip and the door frame upright, effectively preventing the sealing strip from falling off the door frame.

[0016] Another objective of this utility model is to provide a door frame, wherein the door frame includes any of the sealing strips described above.

[0017] The solution shown in this application embodiment, compared with the prior art, uses a sealing strip for a door frame. The sealing strip body abuts against the door frame upright and the door frame stop strip through its two side walls, thereby achieving a seal between the sealing strip body and the door frame upright and the door frame stop strip. The support frame is divided into two sections: a fixed section and a connecting section. The fixed section is located inside the sealing strip body and is fixedly connected to the sealing strip body, while the connecting section is located outside the sealing strip body and is inserted into the mounting groove on the door frame upright. Rigid barbs and elastic clips are respectively provided on both sides along the length direction of the connecting section. When the rigid barbs and elastic clips enter the mounting groove with the connecting section, the rigid barbs and elastic clips abut against the two inner walls of the mounting groove respectively. Relying on the elastic deformation generated by the elastic clips themselves, the force between the rigid barbs and the inner wall of the mounting groove is increased, thereby forming a firm mechanical lock between the sealing strip and the door frame upright, effectively preventing the sealing strip from falling off the door frame. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A cross-sectional view of a sealing strip provided in an embodiment of this application. Figure 1 ; Figure 2 A cross-sectional view of a sealing strip provided in an embodiment of this application. Figure 2 ; Figure 3 This is a schematic diagram of the installation of a sealing strip provided in an embodiment of this application.

[0020] In the diagram: 101, door frame upright; 102, door frame retaining strip; 103, fixing section; 104, connecting section; 105, mounting groove; 106, rigid barb; 107, elastic clip; 108, first support part; 109, second support part; 110, reinforcing strip; 111, limiting protrusion; 112, first sealing part; 113, second sealing part; 114, receiving cavity; 115, notch; 116, magnetic strip; 117, magnetic attracting part; 118, foaming material; 119, adhesive part; 120, film coating; 2, door leaf. Detailed Implementation

[0021] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0022] Please refer to the following: Figure 1 and Figure 3 The present application provides a sealing strip. The sealing strip includes a sealing strip body and a supporting frame. The two side walls of the sealing strip body abut against a door frame support 101 and a door frame retaining strip 102, respectively. The supporting frame includes a fixing section 103 and a connecting section 104, located on the inner and outer sides of the sealing strip body, respectively. The fixing section 103 is fixedly connected to the sealing strip body. An installation groove 105 is provided on the outer side wall of the door frame support 101. The connecting section 104 is inserted into the installation groove 105. Rigid barbs 106 and elastic clips 107 are provided on both sides along the length of the connecting section 104, respectively. The rigid barbs 106 and elastic clips 107 abut against the two inner walls opposite to the installation groove 105.

[0023] The sealing strip provided in this embodiment, compared with the prior art, has its body abutting against the door frame upright 101 and the door frame stop strip 102 through its two side walls, thereby achieving a seal between the sealing strip and the door frame upright 101 and the door frame stop strip 102. The support frame is divided into two sections: a fixed section 103 and a connecting section 104. The fixed section 103 is located inside the sealing strip body and is fixedly connected to the sealing strip body, while the connecting section 104 is located outside the sealing strip body and is inserted into the mounting groove 105 on the door frame support 101. Rigid barbs 106 and elastic clips 107 are respectively provided on both sides of the length direction of the connecting section 104. When the rigid barbs 106 and elastic clips 107 enter the mounting groove 105 with the connecting section 104, the rigid barbs 106 and elastic clips 107 abut against the two inner walls of the mounting groove 105 respectively. Relying on the elastic deformation generated by the elastic clips 107 themselves, the force between the rigid barbs 106 and the inner wall of the mounting groove 105 is increased, thereby forming a firm mechanical lock between the sealing strip and the door frame support 101, effectively preventing the sealing strip from falling off the door frame.

[0024] In this embodiment, rigid barbs 106 and elastic clips 107 are symmetrically arranged on the connecting section 104, with the length of the elastic clip 107 being greater than the length of the rigid barbs 106. The number of rigid barbs 106 can be one or more. When there are multiple rigid barbs 106, they are evenly distributed along the length of the connecting section 104. The inclination angle of the rigid barbs 106 (the angle with the connecting section 104) is between 15° and 20°. This angle balances the smoothness of insertion and the retaining force after fixation, ensuring easy installation and preventing detachment. The elastic clips 107 must possess sufficient resilience to continuously press against the inner wall of the mounting groove 105. EPDM (Shore hardness 75A) is preferably used for the elastic clips 107, as this material is wear-resistant and has good resilience, maintaining a long-term clamping force.

[0025] In some embodiments, please refer to Figure 1 and Figure 3 The rigid barb 106 and the connecting section 104 are integrally formed. In this embodiment, the supporting frame is a sheet metal part, and the rigid barb 106 and the connecting section 104 are integrally formed, which can ensure the connection strength between the rigid barb 106 and the connecting section 104. The rigid barb 106 is made by bending the free end of the connecting section 104, so the rigid barb 106 is located at the end of the connecting section 104 away from the fixed section 103. The fixed section 103 and the connecting section 104 are also integrally formed, and the fixed section 103 and the connecting section 104 form a straight line.

[0026] In some embodiments, please refer to Figure 1 and Figure 3 The elastic clip 107 is angled to the connecting section 104 and tilted towards the side closer to the sealing strip body. In this embodiment, the angle between the elastic clip 107 and the connecting section 104 is 15°-20°. This design is mainly to provide guidance during installation, allowing the clip to slide more smoothly into the mounting groove 105, while using its elastic deformation to generate sufficient holding force to ensure that the sealing strip is secure and does not fall off after installation. Specifically, the elastic clip 107 is angled to the connecting section 104 and tilted towards the sealing strip body. When inserted into the mounting groove 105, this tilted surface will first contact the edge of the groove opening of the mounting groove 105, playing a guiding and positioning role, avoiding the elastic clip 107 directly impacting the groove wall of the mounting groove 105, which would cause installation difficulties or damage. When the elastic clip 107 is fully inserted into the mounting groove 105, its elasticity will cause it to return to its original shape, thereby tightly abutting against the inner wall of the mounting groove 105, generating a holding force perpendicular to the installation direction, preventing the sealing strip from loosening due to vibration or external force during use.

[0027] In some embodiments, please refer to Figure 1 and Figure 3The sealing strip body includes a first support portion 108 and a second support portion 109, which correspond to the door frame retaining strip 102 and the door frame upright 101, respectively. A fixing section 103 is located inside the first support portion 108, and a reinforcing strip 110 extending towards the second support portion 109 is provided on the fixing section 103. In this embodiment, the sealing strip body is composed of the first support portion 108 and the second support portion 109, which correspond to the door frame upright 101 and the door frame retaining strip 102, respectively, to ensure precise contact of the sealing surfaces. The first support portion 108 directly abuts against the door frame upright 101 and is completely in contact with it, possessing high compression resilience to adapt to dynamic stress. The fixing section 103 is embedded inside the first support portion 108 and is integrally formed with the sealing strip body through a vulcanization process, avoiding the risk of delamination. The second support portion 109 is completely in contact with the door frame retaining strip 102. The fixed section 103 is perpendicular to the second support portion 109, while the reinforcing strip 110 is also perpendicular to the fixed section 103. The free end of the reinforcing strip 110 extends towards one side of the second support portion 109, thus forming a mechanical bridge to distribute local loads and prevent the second support portion 109 from twisting or collapsing during long-term use. Because the reinforcing strip 110 extends into the interior of the second support portion 109, the contact area between the support frame and the sealing strip body is increased, thereby enhancing the connection strength between the support frame and the sealing strip body. Since the reinforcing strip 110 is perpendicular to the fixed section 103, it effectively prevents the support frame from being pulled out of the sealing strip body under external force.

[0028] In some embodiments, please refer to Figure 1 and Figure 3 A limiting protrusion 111 is provided at the end of the fixed section 103 away from the connecting section 104. In this embodiment, the limiting protrusion 111 is located at the free end of the fixed section 103. The limiting protrusion 111 and the fixed section 103 are integrally formed. The limiting protrusion 111 is made by bending the end of the fixed section 103 away from the connecting section 104 by 90° using a bending process. The main function of the limiting protrusion 111 is to physically block or strengthen the connection strength. Both the limiting protrusion 111 and the reinforcing strip 110 can increase the connection area between the support frame and the sealing strip body, and at the same time, can prevent the support frame from moving relative to the sealing strip body along the length direction of the connecting section 104 under the action of external force.

[0029] Specifically, when the support frame is subjected to external force, the limiting protrusion 111 effectively restricts its displacement along the length of the connecting section 104, ensuring a stable connection between the support frame and the sealing strip body. The reinforcing strip 110 also plays a crucial role, further enhancing the connection strength between the support frame and the sealing strip body by increasing the connection area. When external force is applied to the support frame, the reinforcing strip 110, in conjunction with the limiting protrusion 111, shares the external force, making the entire connection structure more stable and reliable.

[0030] In some embodiments, please refer to Figure 1 and Figure 3 The first support portion 108 and the second support portion 109 are respectively provided with a first sealing portion 112 and a second sealing portion 113 at their ends that are far apart from each other. The first sealing portion 112 and the second sealing portion 113 are respectively opposite to the door leaf 2. The first support portion 108, the second support portion 109, the first sealing portion 112 and the second sealing portion 113 form a receiving cavity 114, and a notch 115 is provided between the first sealing portion 112 and the second sealing portion 113. In this embodiment, the first support portion 108, the second support portion 109, the first sealing portion 112 and the second sealing portion 113 form a receiving cavity 114, and a notch 115 is provided between the first sealing portion 112 and the second sealing portion 113. When the first sealing portion 112 and the second sealing portion 113 come into contact with the door leaf 2, the first sealing portion 112 and the second sealing portion 113 elastically deform into the interior of the receiving cavity 114 under the action of the door leaf 2, and the receiving cavity 114 provides sufficient deformation space for the first sealing portion 112 and the second sealing portion 113. Since a notch 115 is provided between the first sealing part 112 and the second sealing part 113, a gap is left between the free end of the first sealing part 112 and the free end of the second sealing part 113. Therefore, the first sealing part 112 and the second sealing part 113 will not affect each other during the elastic deformation process.

[0031] In some embodiments, please refer to Figure 2 and Figure 1 The first sealing part 112 is equipped with a magnetic strip 116 inside, which corresponds to the magnetic attracting component 117 inside the door leaf 2. In this embodiment, the magnetic strip 116 is fixedly installed inside the first sealing part 112, and the door leaf 2 is equipped with a magnetic attracting component corresponding to the magnetic strip 116. Therefore, through the magnetic attraction between the magnetic strip 116 and the magnetic attracting component, the door leaf 2 remains relatively stable with the door frame when closed, thus achieving a sealing effect while also providing noise reduction.

[0032] Furthermore, the magnetic strip 116 is made of high-strength permanent magnet material, and its magnetic field strength ensures that it maintains a good magnetic attraction effect with the magnetic attractor 117 under various environmental conditions. Moreover, to enhance sealing performance, the first sealing part 112 uses a special rubber material with good elasticity and flexibility, which can tightly fit the gap between the door frame and the door leaf 2, effectively preventing dust and moisture from entering the room. At the same time, the rubber material is not prone to aging or deformation during long-term use, ensuring the durability of the sealing effect. When the door leaf 2 is closed, the magnetic strip 116 and the magnetic attractor 117 quickly attract each other, forming a stable sealing structure. Even under slight vibration or external force, the door leaf 2 remains stable and will not easily shake or make noise. In addition, the design of this magnetic structure also considers the convenience of disassembly and maintenance. If it is necessary to inspect, replace, or clean the magnetic strip 116 or the magnetic attractor 117, it is only necessary to simply disassemble the relevant parts, without complicated tools and procedures, greatly reducing maintenance costs and difficulty.

[0033] In some embodiments, please refer to Figure 3 The sealing strip body is composed of foam material 118 and a film 120 covering the outside of the foam material 118. The magnetic strip 116 is fixedly connected to the inner wall of the film 120 through an adhesive component 119. In this embodiment, the elastic foam material 118 is ultra-high resilience polyurethane (PU), and the film 120 is a polypropylene (PE) film. The magnetic strip 116 is fixedly connected to the film 120 through the adhesive component 119, which has a simple structure and is easy to assemble and disassemble.

[0034] The foam material 118 has high elasticity and can fit tightly into the gaps of doors and windows, effectively preventing dust and moisture from entering the room. The polypropylene (PE) film coating 120 not only protects the foam material 118, but also has a certain degree of flexibility, which can deform appropriately with the opening and closing of doors and windows without easily breaking.

[0035] In some embodiments, please refer to ​ and ​ The thickness of the first sealing part 112 is greater than the thickness of the second sealing part 113. In this embodiment, the first sealing part 112 is in contact with the inclined surface of the door leaf 2, while the second sealing part 113 is in contact with the side of the door leaf 2. Therefore, the contact area between the first sealing part 112 and the door leaf 2 is greater than the contact area between the second sealing part 113 and the door leaf 2. Furthermore, the first sealing part 112 primarily bears the force applied by the door leaf 2, so its thickness is designed to be greater than that of the second sealing part 113 to ensure its impact resistance. Since the second sealing part 113 is close to the door seam, it can also provide light and dust protection.

[0036] This utility model also provides a door frame including any of the sealing strips described above. Compared with the prior art, the sealing strip used in the door frame of this utility model has its body abutting against the door frame upright 101 and the door frame stop strip 102 through its two side walls, thereby achieving a seal between the sealing strip and the door frame upright 101 and the door frame stop strip 102. The support frame is divided into two sections: a fixed section 103 and a connecting section 104. The fixed section 103 is located inside the sealing strip body and is fixedly connected to the sealing strip body, while the connecting section 104 is located outside the sealing strip body and is inserted into the mounting groove 105 on the door frame support 101. Rigid barbs 106 and elastic clips 107 are respectively provided on both sides of the length direction of the connecting section 104. When the rigid barbs 106 and elastic clips 107 enter the mounting groove 105 with the connecting section 104, the rigid barbs 106 and elastic clips 107 abut against the two inner walls of the mounting groove 105 respectively. Relying on the elastic deformation generated by the elastic clips 107 themselves, the force between the rigid barbs 106 and the inner wall of the mounting groove 105 is increased, thereby forming a firm mechanical lock between the sealing strip and the door frame support 101, effectively preventing the sealing strip from falling off the door frame.

[0037] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A sealing strip, comprising: A sealing strip body and a supporting frame, characterized in that the two side walls of the sealing strip body abut against the door frame upright and the door frame stop strip respectively, the supporting frame includes a fixed section and a connecting section, the fixed section and the connecting section are respectively located on the inner and outer sides of the sealing strip body, the fixed section is fixedly connected to the sealing strip body, an installation groove is provided on the outer side wall of the door frame upright, the connecting section is inserted into the installation groove, and rigid barbs and elastic clips are respectively provided on both sides along the length direction of the connecting section, the rigid barbs and the elastic clips abut against the two inner walls opposite to the installation groove respectively.

2. A sealing strip as described in claim 1, characterized in that, The rigid barbs and the connecting section are integrally formed.

3. A sealing strip as described in claim 1, characterized in that, The elastic clip is set at an angle to the connecting section and tilted towards the side closer to the sealing strip body.

4. A sealing strip as described in claim 1, characterized in that, The sealing strip body includes a first support portion and a second support portion, the first support portion and the second support portion respectively corresponding to the door frame stop strip and the door frame upright, the fixing section is located inside the first support portion, and the fixing section is provided with a reinforcing strip extending towards the second support portion.

5. A sealing strip as described in claim 1, characterized in that, The fixed section has a limiting protrusion at the end away from the connecting section.

6. A sealing strip as described in claim 4, characterized in that, The first support portion and the second support portion are respectively provided with a first sealing portion and a second sealing portion at their ends that are far apart from each other. The first sealing portion and the second sealing portion are both corresponding to the door leaf. The first support portion, the second support portion, the first sealing portion and the second sealing portion form a receiving cavity. A notch is provided between the first sealing portion and the second sealing portion.

7. A sealing strip as described in claim 6, characterized in that, The first sealing part is provided with a magnetic strip inside, and the magnetic strip corresponds to the magnetic attracting component inside the door leaf.

8. A sealing strip as described in claim 7, characterized in that, The sealing strip body is composed of foam material and a film covering the outside of the foam material, and the magnetic strip is fixedly connected to the inner wall of the film by an adhesive.

9. A sealing strip as described in claim 6, characterized in that, The thickness of the first sealing part is greater than the thickness of the second sealing part.

10. A door frame, characterized in that, Includes a sealing strip as described in any one of claims 1-9.

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