A connecting strip for doors and windows

Abstract

This utility model provides a connecting strip for doors and windows, relating to the field of building door and window technology. It includes a connecting strip body with a base, a right-angle portion, a large bend, a hook-shaped portion, and a small bend. The large bend is inclined towards the hook-shaped portion. A 0.5mm thick sealing lip is provided on the outer side of the large bend, which, due to its good elasticity, can tightly fit against door and window gaps, effectively blocking air infiltration, rainwater intrusion, and dust entry, significantly improving the sealing performance of doors and windows and enhancing their heat insulation, sound insulation, and dustproofing effects. Simultaneously, the connecting strip body is made of PVC material with specific performance indicators and has a 0.05mm thick anti-UV coating on its surface, ensuring stable performance under different temperature and humidity conditions, effectively resisting UV corrosion, and possessing excellent weather resistance and anti-aging capabilities. Even with long-term exposure to outdoor environments, it can maintain good performance, reducing replacement and maintenance costs.

Description

Technical Field

[0001] This utility model relates to the field of building door and window technology, and in particular to a connecting strip for doors and windows. Background Technology

[0002] In the field of building doors and windows, door and window connectors are key components that ensure the stable connection of door and window parts and improve the overall performance of doors and windows. Their performance directly affects the user experience and service life of doors and windows.

[0003] Traditional connecting strip sealing structures are poorly designed, and the sealing components lack elasticity or have poor compatibility with door and window gaps, making it difficult to fit tightly. This allows air, rainwater, and dust to easily enter the room through the gaps, which not only reduces the thermal insulation and sound insulation performance of doors and windows but also wastes energy. Utility Model Content

[0004] The purpose of this utility model is to solve the technical problems mentioned in the background art.

[0005] The present invention adopts the following technical solution: a connecting strip for doors and windows, comprising a connecting strip body, wherein the connecting strip body is provided with a base, a right angle portion, a large bend portion, a hook-shaped portion and a small bend portion, the large bend portion is inclined toward the hook-shaped portion, the small bend portion is inclined toward the hook-shaped portion, and the right angle portion is set at a 90-degree angle to the base and the large bend portion.

[0006] Preferably, the base has a flat structure with a width of 5.3 mm and a thickness of 2.0 mm. The bottom surface of the base has anti-slip serrations to enhance friction with the door and window profiles. Here, the flat structure and anti-slip serrations of the base, along with the precise design of its width and thickness, ensure the supporting strength of the connecting strip, while the anti-slip serrations effectively increase friction with the door and window profiles.

[0007] Preferably, a reinforcing rib is provided on the inner side of the right-angle portion. The reinforcing rib has a thickness of 0.8 mm and a height of 1.5 mm. The reinforcing rib is integrally formed with the base and the large bend portion to improve the structural strength of the connecting strip. Here, the provision of a reinforcing rib on the inner side of the right-angle portion, and the integral formation of the reinforcing rib with the base and the large bend portion, can significantly improve the structural strength of the connecting strip.

[0008] Preferably, the radius of the large bend is 11.5 mm, and the arc angle is 135°. Here, the radius and angle of the large bend are clearly defined. This precise dimensional design ensures the flexibility of the connecting strip, allowing it to bend smoothly during installation. Furthermore, the well-designed arc structure helps to distribute stress, enhancing the strength of the connecting strip at the large bend and preventing breakage due to stress concentration.

[0009] Preferably, the outer side of the large bend is provided with a sealing lip, the thickness of which is 0.5mm, to enhance the sealing performance of the door and window. Here, the sealing lip on the outer side of the large bend has a relatively thin design, which gives it good elasticity and allows it to fit tightly against the gaps in the door and window.

[0010] Preferably, the radius of the small bend is 4.0 mm, the arc angle is 90°, and the distance between the small bend and the base is 8.0 mm. Here, the radius of the small bend, the angle, and the distance to the base are determined. The reasonable combination of these dimensional parameters enables the small bend to play a key transition and support role in the connecting strip.

[0011] Preferably, the connecting strip body is made of PVC material with a Shore hardness of 85±5HA, tensile strength ≥15MPa, elongation at break ≥200%, and heat distortion temperature ≥70℃. Here, PVC material is selected, and its specific Shore hardness, tensile strength, elongation at break, and heat distortion temperature are specified. PVC material has good processing performance and comprehensive properties, meeting the usage requirements of door and window connecting strips in various environments.

[0012] Preferably, the surface of the connecting strip body is provided with an anti-ultraviolet coating with a thickness of 0.05 mm, which is used to improve the weather resistance and anti-aging performance of the connecting strip and extend its service life. Here, the anti-ultraviolet coating is provided on the surface of the connecting strip body. Although the coating is thin, it can effectively block the corrosion of ultraviolet rays and prevent the connecting strip from aging, fading, and becoming brittle due to long-term exposure to sunlight, thus greatly improving the weather resistance and anti-aging performance of the connecting strip.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. In this utility model, a 0.5mm thick sealing lip is provided on the outer side of the large bend. Due to its good elasticity, it can tightly fit the gaps in doors and windows, effectively blocking air infiltration, rainwater intrusion, and dust entry, significantly improving the sealing performance of doors and windows and enhancing their heat insulation, sound insulation, and dustproofing effects. Simultaneously, the connecting strip body is made of PVC material with specific performance indicators and has a 0.05mm thick anti-UV coating on its surface. This ensures that the connecting strip maintains stable performance under different temperature and humidity environments, effectively resisting UV corrosion and possessing excellent weather resistance and anti-aging capabilities. Even when exposed to outdoor environments for extended periods, it can maintain good performance, reducing replacement and maintenance costs.

[0015] 2. In this utility model, by setting a base with a flat structure of 5.3mm width and 2.0mm thickness and anti-slip serrations, a solid supporting foundation is provided, while significantly enhancing the friction with door and window profiles and preventing displacement of the connecting strip during use. A 0.8mm thick and 1.5mm high reinforcing rib is set on the inner side of the right-angle section and is integrally formed with the base and the large bend, significantly improving the structural strength of the connecting strip in key areas, enabling it to withstand various external forces generated when doors and windows are opened and closed, and preventing deformation or damage. The reasonable arc radius, angle, and distance from the base of the small bend further optimize the overall structure of the connecting strip, achieving uniform force distribution, comprehensively ensuring the stability of the door and window connection, and effectively extending the service life of doors and windows. Attached Figure Description

[0016] Figure 1 This utility model provides a three-dimensional structural diagram of a connecting strip for doors and windows;

[0017] Figure 2 This utility model provides a schematic diagram of the other side structure of a connecting strip for doors and windows;

[0018] Figure 3 This utility model provides a dimensional diagram of a connecting strip for doors and windows.

[0019] Legend:

[0020] 1. Base; 2. Right angle section; 21. Reinforcing rib; 3. Large bend; 31. Sealing lip; 4. Hook-shaped section; 5. Small bend; 100. Connecting strip body. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] Example 1

[0024] Please see Figures 1-3This utility model provides a technical solution: a connecting strip for doors and windows, including a connecting strip body 100. The connecting strip body 100 is provided with a base 1, a right angle portion 2, a large bend portion 3, a hook-shaped portion 4 and a small bend portion 5. The large bend portion 3 is inclined towards the hook-shaped portion 4, and the small bend portion 5 is inclined towards the hook-shaped portion 4. The right angle portion 2 is set at a 90-degree angle to the base 1 and the large bend portion 3.

[0025] The base 1 has a flat structure, with a width of 5.3mm and a thickness of 2.0mm. The bottom surface of the base 1 has anti-slip serrations to enhance friction with the door and window profiles. Here, the base 1 adopts a flat structure and is equipped with anti-slip serrations. The precise design of its width and thickness ensures the supporting strength of the connecting strip, and the anti-slip serrations effectively increase the friction with the door and window profiles, preventing the connecting strip from shifting during use and improving the stability of the door and window connection.

[0026] A reinforcing rib 21 is provided on the inner side of the right-angle portion 2. The reinforcing rib 21 has a thickness of 0.8 mm and a height of 1.5 mm. The reinforcing rib 21 is integrally formed with the base 1 and the large bend 3 to improve the structural strength of the connecting strip. Here, the reinforcing rib 21 is provided on the inner side of the right-angle portion 2, and the reinforcing rib 21 is integrally formed with the base 1 and the large bend 3, which can significantly improve the structural strength of the connecting strip, making it less prone to deformation or damage when subjected to external forces such as the opening and closing of doors and windows, extending the service life of the connecting strip, and ensuring the normal use of doors and windows.

[0027] The radius of curvature of the large bend 3 is 11.5mm, and the angle of curvature is 135°. Here, the radius and angle of curvature of the large bend 3 are clearly defined. This precise dimensional design ensures the flexibility of the connecting strip, allowing it to bend smoothly during installation. Furthermore, the well-designed arc structure helps to distribute stress, enhancing the strength of the connecting strip at the large bend 3 and preventing breakage due to stress concentration.

[0028] A sealing lip 31 with a thickness of 0.5 mm is provided on the outer side of the large bend 3 to enhance the sealing performance of the doors and windows. The thin design of the sealing lip 31 on the outer side of the large bend 3 provides good elasticity, allowing it to tightly fit against door and window gaps, effectively preventing air, rainwater, dust, etc., from entering the room, significantly enhancing the sealing performance of the doors and windows, and improving their heat insulation, sound insulation, and dustproofing effects.

[0029] The radius of curvature of the small bend 5 is 4.0 mm, the angle of curvature is 90°, and the distance between the small bend 5 and the base 1 is 8.0 mm. Here, the radius of curvature, angle, and distance from the base 1 of the small bend 5 are determined. The reasonable combination of these dimensional parameters allows the small bend 5 to play a crucial transition and support role in the connecting strip, further optimizing the overall structure of the connecting strip, ensuring that it can evenly distribute force during door and window connections, and improving the reliability of the connection.

[0030] The connecting strip body 100 is made of PVC material with a Shore hardness of 85±5HA, tensile strength ≥15MPa, elongation at break ≥200%, and heat distortion temperature ≥70℃. Here, PVC material is selected, and its specific Shore hardness, tensile strength, elongation at break, and heat distortion temperature are specified. PVC material has good processing performance and comprehensive properties, meeting the usage requirements of door and window connecting strips in various environments, ensuring that the connecting strip maintains stable performance under different temperature and humidity conditions, and is not prone to deformation, aging, or other problems.

[0031] The surface of the connecting strip body 100 is coated with an anti-ultraviolet (UV) coating with a thickness of 0.05 mm. This coating improves the weather resistance and anti-aging properties of the connecting strip, extending its service life. Although thin, the UV-resistant coating effectively blocks UV radiation, preventing aging, fading, and embrittlement caused by prolonged exposure to sunlight. This significantly improves the weather resistance and anti-aging properties of the connecting strip, thereby extending its service life and reducing replacement and maintenance costs.

[0032] Working Principle: Clean the surface of the door and window profiles to remove dust, oil, and other impurities, ensuring a clean and flat surface. Align the base 1 of the connecting strip body 100 with the installation position of the door and window profile, utilizing its 5.3mm width and 2.0mm thickness to provide stable support. Engage the base 1 with the door and window profile through the anti-slip serrations on its bottom surface. Gently tap with a rubber mallet to firmly fix the connecting strip body 100 to the profile, preventing displacement during installation and improving the initial stability of the door and window connection. According to the door and window structure, align the right-angle portion 2 with the corresponding right-angle position, ensuring that the 90-degree angle between the right-angle portion 2 and the base 1 and the large bend 3 accurately fits the door and window frame. At this point, the 0.8mm thick and 1.5mm high reinforcing rib 21 on the inner side of the right-angle portion 2 comes into play, enhancing the structural strength of the connecting strip body 100 at the right-angle portion 2. This ensures that when the connecting strip is subjected to external forces generated by the opening and closing of the door and window, it is bent according to the curve or corner shape of the door and window, utilizing the 11.5mm radius and 135° arc angle of the large bend portion 3 to conform to the outline of the door and window. The 0.5mm thick sealing lip 31 on the outer side of the large bend portion 3 is then embedded into the gap between the door and window. The sealing lip 31, with its good elasticity, tightly fits both sides of the gap, effectively preventing air, rainwater, and dust from entering the room, thus improving the sealing performance of the door and window. The hook-shaped portion 4 is then hooked onto the corresponding parts of the door and window, providing initial fixation and positioning. Adjust the position of the small bend 5, utilizing its 4.0mm radius, 90° arc angle, and distance from the base 1, to create a reasonable transition and support structure within the connecting strip, evenly distributing the overall force on the connecting strip, further improving the reliability of the connection, and completing the overall installation of the connecting strip body 100.

[0033] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A connecting strip for doors and windows, comprising a connecting strip body (100), characterized in that: The connecting strip body (100) is provided with a base (1), a right angle portion (2), a large bend portion (3), a hook-shaped portion (4) and a small bend portion (5). The large bend portion (3) is inclined towards the hook-shaped portion (4), and the small bend portion (5) is inclined towards the hook-shaped portion (4). The right angle portion (2) is set at a 90-degree angle to the base (1) and the large bend portion (3).

2. A connecting strip for doors and windows according to claim 1, characterized in that: The base (1) is a flat structure with a width of 5.3 mm and a thickness of 2.0 mm. The bottom surface of the base (1) is provided with anti-slip teeth to enhance the friction with the door and window profiles.

3. A connecting strip for doors and windows according to claim 1, characterized in that: The inner side of the right-angle portion (2) is provided with a reinforcing rib (21). The thickness of the reinforcing rib (21) is 0.8 mm and the height is 1.5 mm. The reinforcing rib (21) is integrally formed with the base (1) and the large bend portion (3) to improve the structural strength of the connecting strip.

4. A connecting strip for doors and windows according to claim 1, characterized in that: The radius of the large bend (3) is 11.5 mm and the arc angle is 135°.

5. A connecting strip for doors and windows according to claim 1, characterized in that: The outer side of the large bend (3) is provided with a sealing lip (31) with a thickness of 0.5 mm, which is used to enhance the sealing performance of doors and windows.

6. A connecting strip for doors and windows according to claim 1, characterized in that: The radius of the arc of the small bend (5) is 4.0 mm, the arc angle is 90°, and the distance between the small bend (5) and the base (1) is 8.0 mm.

7. A connecting strip for doors and windows according to claim 6, characterized in that: The connecting strip body (100) is made of PVC material with a Shore hardness of 85±5HA, tensile strength ≥15MPa, elongation at break ≥200%, and heat distortion temperature ≥70℃.

8. A connecting strip for doors and windows according to claim 6, characterized in that: The surface of the connecting strip body (100) is provided with an anti-ultraviolet coating with a thickness of 0.05mm, which is used to improve the weather resistance and anti-aging performance of the connecting strip and extend its service life.

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