A roller shutter bottom rail mounting structure

Abstract

The utility model relates to a curtain technology field, specifically, relate to a roller shutter bottom rail mounting structure. The bottom rail mounting structure includes curtain cloth and bottom rail, the curtain cloth includes main part, and the lower part of main part is connected with the link, and the inside of link is equipped with the connecting rod, and the bottom rail includes two mutually connected and respectively located curtain cloth lower end front, rear two sides' baffle, and the upper part of baffle is connected with the top plate extending to curtain cloth, and the top plate is connected with the side plate extending to the lower side, and the cross section circumference of connecting rod is more than 60% of the cross section circumference of link, and the height of link upper end is lower than the height of top plate inner end, and the lower end of side plate is connected with the limiting portion that can contact with link, and the shape of limiting portion lower part is arc, and the width of connecting rod front and back direction is greater than the distance between two limiting portions. The upper end of link is hidden in the position that is not easy to see, reduces the generation of moire, improves the product's aesthetic property. The design of sectional material, production cost is low.

Description

Technical Field

[0001] This utility model relates to the field of curtain technology, specifically to a roller blind bottom track installation structure. Background Technology

[0002] Existing roller blind bottom track installation structures, such as Chinese patent CN216317027U, disclose a curtain counterweight structure. This curtain counterweight structure includes a curtain fabric, characterized in that the lower end of the curtain fabric is connected to a connecting ring, and a bottom frame is also included. The upper part of the bottom frame has a first notch for the curtain fabric to pass through. The inner side of the bottom frame is provided with a horizontally arranged sleeve, and the upper part of the sleeve has a second notch for the curtain fabric to pass through. The connecting ring is located inside the sleeve, and a connecting rod passes through the connecting ring.

[0003] The above technical solution has the following disadvantages: When the welding equipment is used to make the ring, the single layer width of the ring is at least 3 cm, that is, the circumference is at least 6 cm. The upper end of the ring will be higher than the upper edge of the first notch. The fabric on both sides of the upper end of the ring will produce moiré patterns, which will affect the aesthetics of the product. At the same time, the existing connecting rod and sleeve are fixed together. In order to make the upper end of the ring lower than the upper edge of the first notch, the design position of the sleeve needs to be moved downward. Moving the design position of the sleeve downward will make it difficult to arrange the sleeve, screw tube and other structures, increasing the design and production cost of the profile. Utility Model Content

[0004] The purpose of this utility model is to provide a roller shutter bottom rail installation structure that addresses the above problems by hiding the upper end of the chain in a less visible position, thereby reducing the generation of moiré patterns.

[0005] To achieve the above objectives, this utility model discloses a roller shutter bottom rail installation structure. The bottom rail installation structure includes a curtain and a bottom rail. The curtain includes a main body, and a connecting ring is connected to the lower part of the main body. A connecting rod is inserted inside the connecting ring. The bottom rail includes two side plates that are connected to each other and located on the front and rear sides of the lower end of the curtain, respectively. A top plate extending towards the curtain is connected to the upper part of the side plates, and a side plate extending downward is connected to the top plate. The perimeter of the connecting rod cross section is more than 60% of the perimeter of the connecting ring cross section. The height of the upper end of the connecting ring is lower than the height of the inner end of the top plate. A limiting part that can contact the connecting ring is connected to the lower end of the side plate. The lower part of the limiting part is arc-shaped, and the width of the connecting rod in the front-rear direction is greater than the distance between the two limiting parts.

[0006] In use, because the connecting rod's cross-sectional perimeter is more than 60% of the ring's cross-sectional perimeter, the connecting rod expands the ring, reducing the height of the ring's upper end relative to the inner end of the top plate. This conceals the ring's upper end in a less visible position, reducing moiré patterns and improving the product's aesthetics. The lower part of the limiting section is arc-shaped, which effectively reduces wear on the ring when it contacts it, thus extending its service life. The profile design and production costs are low.

[0007] Preferably, the thickness of the limiting part is greater than the thickness of the side plate.

[0008] In use, since the thickness of the limiting part is greater than that of the side plate, and the lower part of the limiting part is arc-shaped, when it comes into contact with the connecting ring, it can further reduce the wear on the connecting ring and help improve its service life.

[0009] Preferably, the height of the lower side of the limiting part near the end of the curtain is higher than the height of the end away from the curtain.

[0010] During use, because the curtain exerts an upward force on the interlocking ring, the height of the middle part of the interlocking ring is greater than the height of its two sides. The height of the lower side of the limiting part near the curtain is higher than the height of its side away from the curtain, which can better fit with the upper part of the interlocking ring, increase the contact area, further reduce wear on the interlocking ring, and help to improve its service life.

[0011] Preferably, the lower side of the limiting part has an arc shape at the end near the curtain and at the end away from the curtain.

[0012] During use, the lower side of the limiting part, near the curtain and away from the curtain, is arc-shaped to reduce wear on the connecting ring at both ends. This further reduces wear on the connecting ring and helps to extend its service life.

[0013] Preferably, the distance from the end of the limiting part near the curtain to the side near the curtain is the same as the distance from the end away from the curtain to the side away from the curtain.

[0014] The limiting part of this structure is easy to manufacture.

[0015] Preferably, the width of the connecting rod is greater than the height of the connecting rod.

[0016] When in use, the connecting rod has a large perimeter, and the connecting rod will spread the links apart.

[0017] Preferably, the cross-section of the connecting rod is rectangular, racetrack-shaped, or elliptical.

[0018] When in use, the connecting rod has a rectangular, racetrack-shaped, or elliptical cross-section with a large perimeter. The connecting rod opens up the link, reducing the height of the upper end of the link relative to the inner end of the top plate, hiding the upper end of the link in a less visible position, reducing the generation of moiré patterns, and improving the aesthetics of the product.

[0019] Preferably, a horizontal plate is connected between the middle sections of the inner sides of the two side plates.

[0020] When in use, the horizontal plate is used to connect the inner middle sections of the two side plates. This structure is simple and easy to process and manufacture.

[0021] Preferably, both ends of the horizontal plate are connected to screw tubes.

[0022] When in use, the screw tube is mounted on the end plates at both ends of the bottom rail. The end plates use existing technology and will not be described in detail here.

[0023] Preferably, the upper part of the side plate is connected to a bottom plate extending to the opposite side, and a П-shaped plate is connected between the upper parts of the two bottom plates.

[0024] In use, the П-shaped plate and the two base plates form a T-shaped groove for installing the sealing strip. The sealing strip uses existing technology, which will not be described in detail here.

[0025] Preferably, the interlocking ring is made by bending the lower end of the curtain fabric, and there is a connecting part between the main body and the interlocking ring.

[0026] This structure is made by bending the lower end of the curtain fabric directly, without requiring too many additional materials and processes, which helps to reduce production costs.

[0027] In summary, the beneficial effects of this utility model are as follows: During use, because the circumference of the connecting rod cross-section is more than 60% of the circumference of the connecting ring cross-section, the connecting rod expands the connecting ring, reducing the height of the upper end of the connecting ring relative to the inner end of the top plate, thus concealing the upper end of the connecting ring in a less visible position, reducing moiré patterns, and improving the product's aesthetics. The lower part of the limiting part is arc-shaped, which effectively reduces wear on the connecting ring when it contacts it, thus improving its service life. The design and production costs of the profile are low. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the installation structure of the bottom rail of a roller shutter according to this utility model; Figure 2 yes Figure 1 A magnified structural diagram of part A in the middle; Figure 3 This is a side view schematic diagram of a roller shutter bottom rail installation structure according to this utility model; Figure 4 This is a schematic diagram of the bottom rail in a roller shutter bottom rail installation structure of this utility model; Figure 5 This is a cross-sectional schematic diagram of the connecting rod in the second embodiment of the roller shutter bottom rail installation structure of this utility model; Figure 6 This is a cross-sectional schematic diagram of the connecting rod in the third embodiment of the roller shutter bottom rail installation structure of this utility model.

[0029] In the diagram: 1. Bottom rail; 101. Side plate; 102. Top plate; 103. Side plate; 104. Limiting part; 105. Bottom plate; 106. P-shaped plate; 107. Horizontal plate; 108. Screw tube; 109. Upper notch; 110. Lower notch; 2. Curtain fabric; 201. Main body; 202. Connecting part; 203. Linkage; 3. Connecting rod. Detailed Implementation

[0030] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0031] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0032] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0033] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0034] like Figures 1 to 3As shown, a roller blind bottom rail mounting structure includes a curtain fabric 2 and a bottom rail 1. The curtain fabric includes a main body 201, with a connecting ring 203 connected to the lower part of the main body 201. A connecting rod 3 passes through the connecting ring 203. The bottom rail includes two interconnected side plates 101 located at the front and rear sides of the lower end of the curtain fabric 2, respectively. A top plate 102 extending towards the curtain fabric is connected to the upper part of the side plates 101, and a side plate 103 extending downwards is connected to the top plate 102. Specifically, the half of the top plate 102 away from the curtain fabric 2 is horizontally positioned, and the top plate 102 is inclined upwards into the curtain fabric 2. There is an upper notch 109 between the two top plates 102. The connecting ring 203 is formed by bending the lower end of the curtain fabric 2, and a connecting part 202 is provided between the main body 201 and the connecting ring 203. Specifically, the connecting ring 203 is formed by welding the lower end of the curtain fabric 2 after bending it. The interlocking ring 203 of this structure is made directly from the lower end of the curtain fabric 2 after bending, requiring minimal additional materials and processes, thus reducing production costs. The perimeter of the connecting rod 3 is at least 60% of the perimeter of the interlocking ring 203; specifically, the perimeter of the connecting rod 3 can be 60%, 80%, or 100% of the perimeter of the interlocking ring 203. The upper end of the interlocking ring 203 is lower than the inner end of the top plate 102. The lower end of the side plate 103 is connected to a limiting part 104 that can contact the interlocking ring 203. The lower part of the limiting part 104 is arc-shaped, and the width of the connecting rod 3 in the front-back direction is greater than the distance between the two limiting parts 104. In use, since the perimeter of the connecting rod 3 is at least 60% of the perimeter of the interlocking ring 203, the connecting rod 3 expands the interlocking ring 203, reducing the height of the upper end of the interlocking ring 203 relative to the inner end of the top plate 102, thus concealing the upper end of the interlocking ring 203 in a less visible position, reducing moiré patterns and improving the product's aesthetics. The lower part of the limiting part 104 is arc-shaped, which effectively reduces wear on the connecting ring 203 when it comes into contact with it, thus improving its service life. The profile has low design and production costs.

[0035] Specifically, the thickness of the limiting part 104 is greater than the thickness of the side plate 103. During use, because the thickness of the limiting part 104 is greater than the thickness of the side plate 103, and given the arc shape of the lower part of the limiting part 104, when it contacts the connecting ring 203, it can further reduce wear on the connecting ring 203, thus improving its service life. The height of the lower side of the limiting part 104 near the curtain is higher than the height of its side away from the curtain. During use, because the curtain 2 applies an upward force to the connecting ring 203, the height of the middle of the connecting ring 203 is greater than the height of its sides. The higher height of the lower side of the limiting part 104 near the curtain compared to its side allows for better contact with the upper part of the connecting ring 203, increasing the contact area and further reducing wear on the connecting ring 203, thus improving its service life. The lower side of the limiting part 104, both near and away from the curtain, is arc-shaped. In use, the lower side of the limiting part 104, at both the end near the curtain and the end away from the curtain, is arc-shaped to reduce wear on the connecting ring 203 caused by the lower ends of the limiting part 104. This further reduces wear on the connecting ring 203 and helps to improve its service life. The distance from the lower end of the limiting part 104 near the curtain to its side closest to the curtain is the same as the distance from the lower end away from the curtain to its side away from the curtain. This structure of the limiting part 104 makes it easy to manufacture.

[0036] Specifically, the width of connecting rod 3 is greater than its height. In use, the perimeter of the connecting rod 3's cross-section is larger, allowing it to expand the connecting ring 203. Preferably, the cross-sectional shape of connecting rod 3 is rectangular, racetrack-shaped, or elliptical. In use, the cross-sectional shape of connecting rod 3 is rectangular, racetrack-shaped, or elliptical, and the larger perimeter of the cross-section allows it to expand the connecting ring 203, reducing the height of the upper end of the connecting ring 203 relative to the inner end of the top plate 102. This hides the upper end of the connecting ring 203 in a less visible position, reducing moiré patterns and improving the product's aesthetics.

[0037] like Figures 2 to 4 As shown, a horizontal plate 107 connects the inner middle sections of the two side plates 101. In use, the horizontal plate 107 connects the inner middle sections of the two side plates 101; this structure is simple and easy to manufacture. Both ends of the horizontal plate 107 are connected to threaded tubes 108. In use, the threaded tubes 108 use the end plates at both ends of the mounting base rail 1; the end plates use existing technology and will not be described further. A base plate 105 extending to the opposite side is connected to the upper part of the side plates 101. A lower notch 110 exists between the two base plates 105, and a П-shaped plate 106 connects the upper sides of the two base plates 105. In use, the П-shaped plate 106 and the two base plates 105 form a T-groove for installing a sealing strip; the sealing strip uses existing technology and will not be described further.

[0038] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A roller shutter bottom rail mounting structure, comprising a curtain fabric (2) and a bottom rail (1), wherein the curtain fabric (2) comprises a main body (201), a connecting ring (203) is connected to the lower part of the main body (201), a connecting rod (3) is provided inside the connecting ring (203), and the bottom rail (1) comprises two side plates (101) connected to each other and located on the front and rear sides of the lower end of the curtain fabric (2), a top plate (102) extending toward the curtain fabric (2) is connected to the upper part of the side plate (101), and a side plate (103) extending downward is connected to the top plate (102), characterized in that, The perimeter of the connecting rod (3) is more than 60% of the perimeter of the connecting ring (203). The height of the upper end of the connecting ring (203) is lower than the height of the inner end of the top plate (102). The lower end of the side plate (103) is connected to a limiting part (104) that can contact the connecting ring (203). The lower part of the limiting part (104) is arc-shaped. The width of the connecting rod (3) in the front-back direction is greater than the distance between the two limiting parts (104).

2. The roller shutter bottom rail installation structure as described in claim 1, characterized in that, The thickness of the limiting part (104) is greater than the thickness of the side plate (103).

3. The roller shutter bottom rail installation structure as described in claim 2, characterized in that, The height of the lower side of the limiting part (104) near the curtain (2) is higher than the height of the side away from the curtain (2).

4. The roller shutter bottom rail installation structure as described in claim 2, characterized in that, The lower side of the limiting part (104) near the curtain (2) and away from the curtain (2) is arc-shaped.

5. The roller shutter bottom rail installation structure as described in claim 2, characterized in that, The distance from the end of the limiting part (104) near the curtain (2) to the side near the curtain (2) is the same as the distance from the end away from the curtain (2) to the side away from the curtain (2).

6. The roller shutter bottom rail mounting structure as described in any one of claims 1 to 5, characterized in that, The width of the link (3) is greater than the height of the link (3).

7. The roller shutter bottom rail installation structure as described in claim 6, characterized in that, The cross-section of the connecting rod (3) is rectangular, racetrack-shaped, or elliptical.

8. The roller shutter bottom rail mounting structure as described in any one of claims 1 to 5, characterized in that, A horizontal plate (107) is connected between the inner middle sections of the two side plates (101), and screw tubes (108) are connected to both the front and rear ends of the horizontal plate (107).

9. The roller shutter bottom rail mounting structure as described in any one of claims 1 to 5, characterized in that, The upper part of the side plate (101) is connected to the bottom plate (105) extending to the opposite side, and the upper sides of the two bottom plates (105) are connected to the П-shaped plate (106).

10. The roller shutter bottom rail mounting structure as described in any one of claims 1 to 5, characterized in that, The link (203) is made by bending the lower end of the curtain (2), and there is a connecting part (202) between the main body (201) and the link (203).

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