An adjustable expanding roller blind

Abstract

The utility model discloses an adjustable and expandable roller shutter, including positioning winding pipe, the inside slide of positioning winding pipe is equipped with the adjusting winding pipe, and the bottom of positioning winding pipe and adjusting winding pipe all is connected with the clamping plate, and the inside installation of clamping plate has the roller shutter fabric, and one end of positioning winding pipe rotatory mounting has the support column, and one end of adjusting winding pipe rotatory mounting has the transmission cylinder, and the inside installation of transmission cylinder has the pull pearl, and is equipped with the expansion adjusting mechanism between positioning winding pipe and adjusting winding pipe. The utility model has the following effect: through expansion adjusting mechanism, can change the position of adjusting winding pipe in positioning winding pipe, make positioning winding pipe and the two roller shutter fabrics of adjusting winding pipe bottom carry out the relative adjustment, when facing the window of different width, change the area of roller shutter fabric and effectively solve the problem that the traditional roller shutter cannot adapt to different window width because of the fixed width, significantly improve the installation adaptability and versatility of product.

Description

Technical Field

[0001] This utility model relates to the field of roller blind technology, and more specifically, to an adjustable and expandable roller blind. Background Technology

[0002] Roller blinds are a common type of window covering. Their basic structure involves rolling up the curtain fabric into a tube, which is then fixed to the window frame or wall by brackets on both sides. A pull cord or chain drives the roller to raise and lower the blind. Due to their simple structure, ease of operation, and neat and attractive appearance, these products are widely used in homes, offices, and commercial spaces.

[0003] Existing roller blinds typically offer height adjustment, allowing them to adapt to windows of varying heights by adjusting the relative positions of the roller tube and base rod, thus meeting installation requirements. However, in practical applications, window widths vary, while traditional roller blinds have a fixed width determined by the roller tube length, guide rails, and mounting brackets, making them unadjustable based on actual window width. Therefore, users often need to customize roller blinds for windows of different widths, increasing production costs and waiting times, and reducing product versatility and changeover flexibility. Especially when the same roller blind needs to be used on different windows or in different application scenarios, its fixed width limitation leads to poor adaptability, severely restricting the product's practicality and market adaptability.

[0004] There are currently no effective solutions to the problems in the relevant technologies. Utility Model Content

[0005] In view of the problems in the related technologies, this utility model proposes an adjustable and expandable roller blind to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] Therefore, the specific technical solution adopted by this utility model is as follows: An adjustable and extendable roller blind includes a positioning roller tube, an adjusting roller tube slidably installed inside the positioning roller tube, a clamping plate connected to the bottom of both the positioning roller tube and the adjusting roller tube, a roller blind fabric installed inside the clamping plate, a support column rotatably installed at one end of the positioning roller tube, a transmission cylinder rotatably installed at one end of the adjusting roller tube, a pull bead installed inside the transmission cylinder, and an extension adjustment mechanism provided between the positioning roller tube and the adjusting roller tube.

[0007] Furthermore, in order to adjust the coverage width of the two roller blind fabrics, the extended adjustment mechanism includes a transmission screw rotatably installed inside the positioning roller tube. The transmission screw is threadedly connected to one end of the adjusting roller tube. The surface of the positioning roller tube has a driven groove, and the surface of the adjusting roller tube is connected to a limit block, which slides in cooperation with the driven groove.

[0008] Furthermore, in order to facilitate the rotation of the transmission screw, a turning ring is slidably installed on one side of the transmission screw, and a limit rod is connected to one side of the turning ring. A limit groove is opened at one end of the positioning tube, and the limit rod cooperates with the limit groove.

[0009] Furthermore, in order to drive the positioning and adjusting rollers to rotate, thereby winding and unwinding the roller blind fabric, one end of the transmission screw is rotatably connected to the support column, and one end of the adjusting roller is connected to a driven sprocket inside the transmission cylinder, which meshes with the pull bead.

[0010] Furthermore, in order to enable the roller shutter to be freely assembled and disassembled, one end of the support column and the transmission cylinder are connected to an assembly plate, and a positioning hole is opened on one side of the assembly plate.

[0011] Furthermore, in order to enable the replacement and removal of the roller blind fabric, the roller blind fabric is fixedly installed in the clamping plate by positioning bolts.

[0012] Furthermore, in order to keep the roller blind fabric flat and increase its drape when it is raised and lowered, a load-bearing bottom rod is connected to the bottom of the roller blind fabric.

[0013] The beneficial effects of this utility model are as follows: By expanding the adjustment mechanism, when facing windows of different widths, turning the transmission screw inside the positioning roller tube causes the transmission screw to drive the adjustment roller tube to slide inside the positioning roller tube, thereby adjusting the relative positions of the two roller blind fabrics at the bottom of the positioning roller tube and the adjustment roller tube, changing the overall covering width of the two roller blind fabrics. This effectively solves the problem that traditional roller blinds cannot adapt to different window widths due to their fixed width, significantly improving the installation adaptability and versatility of the product. The same set of roller blinds can be adjusted to adapt to multiple installation scenarios, and can still be readjusted and used when changing windows or relocating the usage environment, reducing resource waste and lowering usage costs. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the surface structure of an adjustable and expandable roller blind according to an embodiment of the present utility model; Figure 2 yes Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram of the surface structure of an adjustable and extendable roller blind after the adjusting roller tube has slid according to an embodiment of the present utility model. Figure 4 This is a schematic diagram of the disassembled structure of the positioning roller tube and the adjusting roller tube in an adjustable and expandable roller blind according to an embodiment of the present utility model. Figure 5 This is a schematic diagram of the internal structure of the transmission cylinder in an adjustable and expandable roller shutter according to an embodiment of the present invention; Figure 6 yes Figure 5 Enlarged diagram of point B in the middle.

[0016] In the picture: 1. Positioning roller tube; 2. Adjusting roller tube; 3. Clamping plate; 4. Roller blind fabric; 5. Support column; 6. Transmission cylinder; 7. Beaded string; 8. Extension adjustment mechanism; 801. Transmission screw; 802. Driven groove; 803. Limiting block; 804. Tightening ring; 805. Limiting rod; 806. Limiting groove; 9. Driven sprocket; 10. Loading and unloading plate; 11. Positioning hole; 12. Load-bearing base rod. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] According to an embodiment of the present invention, an adjustable and extendable roller blind is provided.

[0019] Example 1: like Figures 1-5 As shown, an adjustable and expandable roller blind according to an embodiment of the present invention includes a positioning roller tube 1 made of metal, an adjusting roller tube 2 slidably installed inside the positioning roller tube 1, and clamping plates 3 connected to the bottom of both the positioning roller tube 1 and the adjusting roller tube 2. Roller blind fabric 4 is installed inside both clamping plates 3. The roller blind fabric 4 can be wound and unwound by rotating the positioning roller tube 1 and the adjusting roller tube 2 in opposite directions. A support column 5 is rotatably installed at one end of the positioning roller tube 1, and a transmission cylinder 6 is rotatably installed at one end of the adjusting roller tube 2. A pull bead 7 is installed inside the transmission cylinder 6, which is used to drive the adjusting roller tube 2 to rotate after being pulled. An expansion adjustment mechanism 8 is provided between the positioning roller tube 1 and the adjusting roller tube 2, which is used to adjust the covering width of the two roller blind fabrics 4 by changing the position of the adjusting roller tube 2 inside the positioning roller tube 1, so as to adapt to windows of different widths.

[0020] like Figures 1-6As shown, the extended adjustment mechanism 8 includes a transmission screw 801 rotatably mounted inside the positioning tube 1. The transmission screw 801 is threadedly connected to one end of the adjusting tube 2. By turning the transmission screw 801, it can drive the adjusting tube 2 to slide inside the positioning tube 1, thereby changing the relative position of the bottom curtain fabric 4 of the two tubes. The surface of the positioning tube 1 has a driven groove 802, and the surface of the adjusting tube 2 is connected to a limit block 803. The limit block 803 is slidably engaged with the driven groove 802. A turning ring 804 is slidably mounted on one side of the transmission screw 801, and a limit rod 805 is connected to one side of the turning ring 804. One end of the positioning tube 1 has a limit groove 806, and the limit rod 805 engages with the limit groove 806. When the limit rod 805 on one side of the turning ring 804 is engaged in the limit groove 806, rotating the turning ring 804 can easily adjust the transmission screw 801. 01. Rotation adjustment is performed; one end of the transmission screw 801 is rotatably connected to the support column 5, and one end of the adjusting roller tube 2 is connected to the driven sprocket 9 inside the transmission cylinder 6. The driven sprocket 9 meshes with the pull bead 7. By pulling the pull bead 7, the adjusting roller tube 2 is rotated. The adjusting roller tube 2 drives the positioning roller tube 1 to rotate synchronously through the mutual cooperation of the limiting block 803 and the driven groove 802, so as to realize the winding and unwinding of the roller blind fabric 4 at the bottom of the two roller tubes; one end of the support column 5 and the transmission cylinder 6 are both connected to the loading and unloading plate 10. The loading and unloading plate 10 has a positioning hole 11 on one side, which is used to facilitate the installation of the roller blind as a whole on the side of the window by screws or bolts; the roller blind fabric 4 is fixedly installed in the clamping plate 3 by the positioning bolt. By turning the positioning bolt, the two roller blind fabrics 4 can be freely loaded and unloaded; the bottom of the roller blind fabric 4 is connected to the load-bearing bottom rod 12, which is used to keep the roller blind fabric 4 flat and increase the drape when it is rolled up and down.

[0021] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0022] In summary, with the help of the above-mentioned technical solution of this utility model, in actual use, before installation, the obstruction width between the two roller blind fabrics 4 is first adjusted according to the actual width of the window to be installed by the expansion adjustment mechanism 8. Specifically, during the adjustment process, the rotating ring 804 is rotated, causing the transmission screw 801 connected to it to rotate synchronously. Since the transmission screw 801 is threadedly connected to one end of the adjusting roller tube 2, it can drive the adjusting roller tube 2 to slide linearly along the axial direction of the positioning roller tube 1. When the adjusting roller tube 2 extends or retracts within the positioning roller tube 1, it drives the clamping plate 3 at its bottom, the roller blind fabric 4, and the load-bearing base rod 12 to move synchronously, thereby changing the relative position between the two roller blind fabrics 4 and realizing the expansion or contraction of the overall obstruction width to adapt to windows of different widths. After the width adjustment is completed, the entire roller blind is fixed to the wall or window frame on both sides above the window using screws or bolts via the support column 5 and the mounting plate 10 at one end of the transmission cylinder 6. During use, the limiting rod 805 on one side of the turning ring 804 is aligned and inserted into the limiting groove 806 at the end of the positioning roller tube 1, so that the limiting rod 805 and the limiting groove 806 form a sliding guide engagement. By pulling the pull bead 7 in the transmission cylinder 6, the pull bead 7 drives the driven sprocket 9 to rotate, which in turn drives the adjusting roller tube 2 to rotate. Since the adjusting roller tube 2 and the positioning roller tube 1 rotate synchronously through the sliding engagement between the limiting block 803 and the driven groove 802, the rotation of the adjusting roller tube 2 will simultaneously drive the positioning roller tube 1 to rotate in the same direction, so that the two roller blind fabrics 4 are synchronously rolled up or lowered on their respective roller tubes, realizing the raising and lowering operation of the curtain.

[0023] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An adjustable and extendable roller blind, characterized in that, The device includes a positioning roller tube (1), an adjusting roller tube (2) which is slidably installed inside the positioning roller tube (1), a clamping plate (3) connected to the bottom of both the positioning roller tube (1) and the adjusting roller tube (2), a roller blind fabric (4) installed inside the clamping plate (3), a support column (5) rotatably installed at one end of the positioning roller tube (1), a transmission cylinder (6) rotatably installed at one end of the adjusting roller tube (2), a pull bead (7) installed inside the transmission cylinder (6), and an extension adjustment mechanism (8) provided between the positioning roller tube (1) and the adjusting roller tube (2).

2. The adjustable and expandable roller blind according to claim 1, characterized in that, The extended adjustment mechanism (8) includes a transmission screw (801) rotatably mounted inside the positioning tube (1). The transmission screw (801) is threadedly connected to one end of the adjustment tube (2). The surface of the positioning tube (1) has a driven groove (802). The surface of the adjustment tube (2) is connected to a limit block (803). The limit block (803) slides in cooperation with the driven groove (802).

3. The adjustable and expandable roller blind according to claim 2, characterized in that, A rotating ring (804) is slidably installed on one side of the transmission screw (801). A limit rod (805) is connected to one side of the rotating ring (804). A limit groove (806) is opened at one end of the positioning tube (1). The limit rod (805) cooperates with the limit groove (806).

4. The adjustable and expandable roller blind according to claim 3, characterized in that, One end of the transmission screw (801) is rotatably connected to the support column (5), and one end of the adjusting tube (2) is connected to the driven sprocket (9) inside the transmission cylinder (6). The driven sprocket (9) meshes with the pull ball (7).

5. The adjustable and expandable roller blind according to claim 1, characterized in that, One end of the support column (5) and the transmission cylinder (6) is connected to a loading and unloading plate (10), and a positioning hole (11) is opened on one side of the loading and unloading plate (10).

6. The adjustable and expandable roller blind according to claim 1, characterized in that, The roller blind fabric (4) is fixedly installed in the clamping plate (3) by positioning bolts.

7. An adjustable and expandable roller blind according to claim 1, characterized in that, The bottom of the roller blind fabric (4) is connected to a load-bearing bottom rod (12).

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