Curtain upper beam

Abstract

The utility model discloses a curtain upper beam which comprises a beam body, a rolling cavity is formed in the beam body in a hollow mode, a penetrating groove communicated with the rolling cavity is formed in the bottom wall of the beam body in the length direction of the beam body, a dismounting groove communicated with the rolling cavity is formed in the top wall of the beam body in the length direction of the beam body, and the top wall of the beam body is covered with a sealing plate used for sealing the dismounting groove. Two sealing grooves are formed in the beam body in the length direction of the beam body, sealing lips are arranged at the positions, corresponding to the two sealing grooves, of the sealing plate, the sealing lips and the sealing grooves are arranged in an expansion fit mode, and the two sealing grooves are communicated to the two ends of the beam body to form sliding openings allowing the sealing lips to be placed into the sealing grooves. The beam body is provided with a loading piece used for applying acting force to the sealing lip so that the outer circumferential wall of the sealing lip can be tightly attached to the inner circumferential wall of the sealing groove. The curtain upper beam solves the problems that the sealing strength of a dismounting groove formed in the top of a traditional curtain upper beam is low, the sealing performance in the beam body is affected, and external impurities or water stains invade the beam body to affect components in the beam body.

Description

Technical Field

[0001] This utility model relates to the field of curtain top beam technology, specifically a curtain top beam. Background Technology

[0002] In modern homes and offices, curtains are a common decorative and functional item, serving purposes such as blocking light, protecting privacy, and decorating the space. The curtain top beam, as a crucial support structure for curtain installation, directly impacts the curtain's performance and lifespan due to its structural design and reliability. Traditional curtain top beams typically require a groove at the top for easy installation and removal of internal components, such as the rolling mechanism. However, current technology often falls short in sealing this groove. A sealing plate is generally used to enclose the groove, resulting in a simple seal between the plate and the beam, usually relying solely on the fit between a sealing lip and the groove. This method offers low sealing strength and, over time, is susceptible to external environmental factors such as dust and rain. Impurities or water stains can penetrate the beam through gaps in the seal. The beam typically houses components for the curtain rolling mechanism, such as the roller and transmission mechanism. If these components are contaminated by impurities or corroded by water, they can experience accelerated wear, impaired transmission, or even rust and damage, ultimately affecting the normal use of the curtain and shortening the lifespan of the top beam and the entire curtain system. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a curtain top beam, which solves the problem that the sealing strength of the disassembly groove opened at the top of the traditional curtain top beam is low, affecting the internal sealing of the beam and causing external impurities or water stains to enter the beam and affect the internal components.

[0004] To achieve the above objectives, this utility model provides a curtain top beam, including a beam body with a hollow roll-up cavity. The bottom wall of the beam body has a through groove communicating with the roll-up cavity along its length. The top wall of the beam body has a disassembly groove communicating with the roll-up cavity along its length. The top wall of the beam body is covered with a sealing plate for closing the disassembly groove. The beam body has two sealing grooves along its length. The sealing plate has sealing lips corresponding to the two sealing grooves. The sealing lips are tightly fitted with the sealing grooves. Both sealing grooves are connected to both ends of the beam body to form sliding openings for the sealing lips to be inserted into the sealing grooves. The beam body is provided with a loading member for applying force to the sealing lips to ensure a tight fit between the outer peripheral wall of the sealing lip and the inner peripheral wall of the sealing groove.

[0005] The advantages of adopting the above technical solution are as follows: By setting a sealing plate with a sealing lip on the top wall of the beam and applying force to the sealing lip with the help of the loading component, the sealing strength of the disassembly groove is significantly improved. That is, the expansion and tightening of the sealing lip and the sealing groove, combined with the continuous pressure of the loading component, can effectively prevent external dust, rainwater and other impurities from entering the winding cavity inside the beam through the sealing gap. This avoids problems such as increased wear and running jams caused by pollution or corrosion of internal rollers, transmission mechanisms and other components, thereby extending the service life of the curtain beam and the entire curtain system. At the same time, the sliding mouth design at both ends of the sealing groove facilitates the installation and disassembly of the sealing lip, taking into account both assembly convenience and structural sealing. This allows the beam to be maintained without damaging the sealing structure, optimizing the user experience of the product. The setting of the loading component forms a dynamic sealing compensation mechanism, which can adapt to the deformation of components caused by vibration and temperature difference during long-term use, ensuring the stability of the sealing effect and meeting the waterproof and dustproof needs of multiple scenarios such as home and office.

[0006] The present invention further comprises: the radial cross section of the sealing lip is arranged in an "L" shape and divided into a horizontal part and a vertical part; the horizontal part and the vertical part are perpendicularly connected and a first step surface is formed between them; the shape of the sealing groove is adapted to the shape of the sealing lip and a second step surface is formed on the inner peripheral wall of the sealing groove for tightly fitting with the first step surface; and the vertical part is connected to the bottom wall of the sealing plate.

[0007] The advantages of adopting the above technical solution are as follows: The sealing lip adopts a radial cross-section "L" shape design. The first step surface formed by the horizontal and vertical parts fits tightly with the second step surface in the sealing groove, realizing a multi-dimensional sealing fit. Compared with traditional planar seals, the stepped surface structure increases the sealing contact area, which can effectively disperse external pressure and reduce the sealing failure problem caused by single-point stress concentration. The connection design between the vertical part and the bottom wall of the sealing plate allows the sealing lip to maintain a stable geometric shape during installation, avoiding sealing offset caused by sealing plate deformation. The shape compatibility between the sealing groove and the sealing lip ensures the fitting accuracy of the two during expansion and tightening, further improving the reliability of the sealing structure.

[0008] This utility model further includes: limiting grooves are formed on both sides of the beam along the length of the beam; limiting plates are movably arranged in the limiting grooves; the limiting grooves are connected to both ends of the beam and form limiting openings for the limiting plates to be inserted; a loading groove is connected between the limiting grooves and the sealing grooves; the loading component includes a loading block disposed in the loading groove; the loading block is made of elastic material and its top end is a loading end for abutting against the bottom wall of the horizontal section; both sides of the bottom end of the loading block are smoothly curved and connected to the bottom wall of the loading block to form a force-bearing surface, and the combined radial cross section of the two force-bearing surfaces is conical; the limiting plate has a mating groove along the length of the beam; both sides of the mating groove are smoothly curved and connected to the bottom wall of the mating groove to form a loading surface, and the combined radial cross section of the two loading surfaces is conical; the two force-bearing surfaces correspond one-to-one with the two loading surfaces and are abutting against each other.

[0009] The advantages of adopting the above technical solution are as follows: The above technology constructs an adjustable elastic loading system through the cooperation of the limiting groove, limiting plate, and elastic loading block. The conical force-bearing surface of the loading block abuts against the loading surface of the limiting plate, allowing the limiting plate to move along the length of the beam. This conical structure converts the external force into radial pressure on the loading block, thereby pushing the loading end at the top of the loading block to continuously press against the horizontal part of the sealing lip. In other words, the elastic loading block can adapt to the small displacement of the sealing lip through its own deformation, forming dynamic sealing compensation and avoiding wear of the sealing lip caused by rigid contact. Simultaneously, the force transmission mechanism of the conical surface can uniformly amplify the moving force of the limiting plate, achieving efficient loading of the sealing lip with a smaller limiting plate stroke, thus improving the reliability of the sealing structure. Furthermore, the setting of the limiting groove and limiting port facilitates the overall installation and disassembly of the loading component. During maintenance, the loading force can be adjusted simply by sliding the limiting plate, significantly reducing subsequent maintenance costs and adapting to sealing pressure requirements under different working conditions.

[0010] The present invention further includes: a sealing gasket wrapped around the outer peripheral wall of the horizontal part, the sealing gasket being made of waterproof sealing rubber material, and the sealing lip being made of metal material.

[0011] The advantages of adopting the above technical solution are as follows: The technology uses a waterproof rubber sealing gasket wrapped around the outer periphery of the sealing lip, while employing a metal sealing lip body, forming a composite sealing structure that combines rigidity and flexibility. The metal sealing lip provides high-strength structural support, resisting external impacts and deformations during long-term use, ensuring the precise fit between the sealing groove and the sealing lip. The waterproof rubber sealing gasket fills the sealing gap through its own elastic deformation, enhancing the barrier effect against rainwater and moisture, making it particularly suitable for humid environments or exterior wall installations. The synergistic effect of the two materials avoids the frictional wear caused by rigid contact in pure metal sealing lips and solves the problem of insufficient strength in pure rubber seals, achieving a dual improvement in sealing performance and structural durability. Furthermore, the material properties of the sealing gasket give it excellent anti-aging and corrosion resistance, maintaining a stable sealing effect even under long-term ultraviolet radiation or high humidity environments, extending the effective service life of the sealing structure and reducing the frequency of product maintenance.

[0012] The present invention is further provided that: both side walls of the sealing plate are connected to the top wall with a smooth arc surface and form a circular arc surface.

[0013] The advantages of adopting the above technical solution are as follows: The arc-shaped surface design between the two sides of the sealing plate and the top wall improves product performance from the perspective of practicality and humanization. The arc-shaped surface structure can reduce the accumulation of dust and water stains on the edge of the sealing plate, avoiding the problem of sealing lip wear and sealing failure caused by dust accumulation in the traditional right-angle structure. At the same time, it facilitates daily cleaning and maintenance. The smooth arc transition also reduces the risk of scratches caused by sharp corners during installation and use, improving the safety of the product. From the perspective of structural mechanics, the arc-shaped surface design can disperse the stress concentration at the connection between the sealing plate and the beam, enhance the connection strength between the sealing plate and the beam, and reduce the problem of edge cracking caused by long-term vibration or external force. In addition, the streamlined appearance of the arc-shaped surface enhances the overall aesthetics of the curtain beam, making it easier to match the decoration style of modern home and office environments. It meets functional needs while taking into account decoration, expanding the application scenarios of the product. Attached Figure Description

[0014] Figure 1 This is a simplified sectional view of the present invention;

[0015] Figure 2 for Figure 1 A magnified view of part A in the middle. Detailed Implementation

[0016] This utility model provides a curtain top beam, including a beam body 1. The beam body 1 is hollow and has a retraction cavity 11. The bottom wall of the beam body 1 has a through groove 12 communicating with the retraction cavity 11 along the length of the beam body 1. The top wall of the beam body 1 has a disassembly groove 13 communicating with the retraction cavity 11 along the length of the beam body 1. The top wall of the beam body 1 is covered with a sealing plate 2 for closing the disassembly groove 13. The beam body 1 has two sealing grooves 14 along its length. The sealing plate 2 is provided with sealing lips 21 corresponding to the two sealing grooves 14. The sealing lips 21 are tightly fitted with the sealing grooves 14. Both sealing grooves 14 are connected to the beam body 1. The beam 1 has sliding openings at both ends for the sealing lip 21 to be inserted into the sealing groove 14. A loading member is provided on the beam 1 to apply force to the sealing lip 21 so that the outer peripheral wall of the sealing lip 21 is tightly fitted to the inner peripheral wall of the sealing groove 14. The sealing lip 21 has an L-shaped radial cross-section and is divided into a horizontal part 211 and a vertical part 212. The horizontal part 211 and the vertical part 212 are perpendicularly connected, and a first step surface 213 is formed between them. The sealing groove 14 is shaped to match the sealing lip 21, and the inner peripheral wall of the sealing groove 14 has a second step surface 141 for tightly fitting with the first step surface 213. The vertical part 212 and the sealing lip 21 are connected in a sliding manner. The bottom wall of plate 2 is connected to the beam body 1. Limiting grooves 15 are formed on both sides of the beam body 1 along the length of the beam body 1. Limiting plates 3 are movably installed in the limiting grooves 15. The limiting grooves 15 are connected to both ends of the beam body 1 and form limiting openings for the limiting plates 3 to be inserted. A loading groove 16 is connected between the limiting grooves 15 and the sealing groove 14. The loading component includes a loading block 4 disposed in the loading groove 16. The loading block 4 is made of elastic material and its top end is a loading end 41 for abutting against the bottom wall of the horizontal part 211. Both sides of the bottom end of the loading block 4 are smoothly curved and connected to the bottom wall of the loading block 4 to form a force-bearing surface 42. Furthermore, the radial cross section of the two load-bearing surfaces 42 is set in a conical shape. The limiting plate 3 is provided with a mating groove 31 along the length of the beam 1. The inner walls on both sides of the mating groove 31 are connected to the bottom wall of the mating groove 31 with a smooth curved surface to form a loading surface 32. The radial cross section of the two loading surfaces 32 is set in a conical shape. The two load-bearing surfaces 42 correspond one-to-one with the two loading surfaces 32 and are mated together. The outer peripheral wall of the horizontal part 211 is wrapped with a sealing gasket. The sealing gasket is made of waterproof sealing rubber material. The sealing lip 21 is made of metal material. The two side walls of the sealing plate 2 are connected to the top wall with a smooth arc surface to form a circular arc surface 33.

[0017] The foregoing has shown and described the basic principles and main features of this utility model, as well as its advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from its spirit and scope. All such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A curtain top beam, comprising a beam body, wherein the beam body is hollow and has a retraction cavity, the bottom wall of the beam body has a through groove communicating with the retraction cavity along the length of the beam body, the top wall of the beam body has a disassembly groove communicating with the retraction cavity along the length of the beam body, and the top wall of the beam body is covered with a sealing plate for closing the disassembly groove, characterized in that: The beam has two sealing grooves along its length. The sealing plate is provided with sealing lips at the positions of the two sealing grooves. The sealing lips are fitted tightly with the sealing grooves. Both sealing grooves are connected to the two ends of the beam to form sliding openings for the sealing lips to be inserted into the sealing grooves. The beam is provided with a loading member for applying force to the sealing lips so that the outer peripheral wall of the sealing lip is tightly fitted with the inner peripheral wall of the sealing groove.

2. A curtain top beam according to claim 1, characterized in that: The sealing lip has an "L" shaped radial cross section and is divided into a horizontal part and a vertical part. The horizontal part and the vertical part are perpendicularly connected and a first step surface is formed between them. The shape of the sealing groove is adapted to the shape of the sealing lip, and a second step surface is formed on the inner peripheral wall of the sealing groove for close contact with the first step surface. The vertical part is connected to the bottom wall of the sealing plate.

3. A curtain top beam according to claim 2, characterized in that: Limiting grooves are formed on both sides of the beam along its length. Limiting plates are movably installed in the limiting grooves. The limiting grooves are connected to both ends of the beam and form limiting openings for the limiting plates to be inserted. A loading groove is connected between the limiting grooves and the sealing grooves. The loading component includes a loading block set in the loading groove. The loading block is made of elastic material and its top end is a loading end for abutting against the bottom wall of the horizontal section. Both sides of the bottom end of the loading block are connected to the bottom wall of the loading block with a smooth curved surface to form a force-bearing surface. The combined radial cross section of the two force-bearing surfaces is conical. The limiting plate has a mating groove along the length of the beam. Both sides of the mating groove are connected to the bottom wall of the mating groove with a smooth curved surface to form a loading surface. The combined radial cross section of the two loading surfaces is conical. The two force-bearing surfaces correspond one-to-one with the two loading surfaces and are abutting against each other.

4. A curtain top beam according to claim 2, characterized in that: The outer peripheral wall of the horizontal part is wrapped with a sealing gasket, which is made of waterproof sealing rubber material, and the sealing lip is made of metal material.

5. A curtain top beam according to claim 1, characterized in that: Both sides of the sealing plate are connected to the top wall with a smooth arc surface, forming a circular arc surface.

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