Roller shutter cloth with different thicknesses

Abstract

The invention relates to unequal-thickness roller shutter cloth, which has a thinner upper part and a thicker lower part, and is used for lifting a roller shutter driven by a rolling shaft. The window has the advantages that only by driving the reel to rotate and ascend and descend at a constant speed, the window can collect light from the upper part and shade light from the lower part when the window is semi-opened, and can collect light from the upper part and the lower part simultaneously when the window is fully opened. The movement mechanism of the lifting reel roller shutter is simplified, the cost is reduced, and the reliability is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to a roller blind fabric, in particular to a segmented non-uniform thickness roller blind fabric. BACKGROUND

[0002] Roller blinds are convenient to use, elegant and widely used in home life and office places. The common way of existing roller blinds is to fix the roller shaft on the upper end of the window, and to rotate the roller shaft to wind or release the blind fabric. This kind of window blind first opens from the lower part of the window, so that the upper part of the window is shaded and the lower part is lighted. When opening, the lower part of the window cannot block the view, and the upper part cannot be lighted. However, in actual life, in private spaces such as rooms, reception rooms, bathrooms, school classrooms and some office places, it is often necessary to block the view of the lower half of the window and to utilize the upper half for lighting. Therefore, an upper opening type roller blind is needed.

[0003] Chinese patent ZL201320482322.5 discloses an upper opening type roller blind. The patent connects a movable pulley mechanism to both ends of the roller shaft, so that the traction rope drives the movable pulley and the roller shaft to ascend and descend at the same time, and drives the roller shaft to rotate at the same time. When the ascending and descending speed of the roller shaft is similar to the winding or releasing speed of the blind fabric on the roller shaft, the lower end of the roller blind can be kept basically stationary, thereby realizing the effect of dynamic upper opening type roller blind. In order to further improve the design of the patent, Chinese patent ZL201810513089.X discloses a roller blind that can be freely opened and closed up and down. The patent uses a set of tensioning pulleys and movable pulley systems to make the roller shaft ascend and descend while rotating, so that the ascending and descending speed of the roller shaft is similar to the winding or releasing speed of the blind fabric on the roller shaft, and the lower end of the roller blind can be kept basically stationary, thereby achieving the effect of upper opening type roller blind and realizing lighting in the upper part while shading in the lower part. In order to meet the needs of some scenes that also require lighting in the upper and lower parts at the same time, the above-mentioned patent designs a double-motor combined driving mode, but this increases the complexity of the running system and the cost of the product.

[0004] In the above-mentioned patents, the roller shaft is used to drive the winding of the blind fabric. The blind fabric used is the same as various blind fabrics on the market, that is, the thickness is uniform. When the thickness of the blind fabric is thin, the change in winding diameter caused by the rotation of the roller shaft is not large, so the lower end of the roller blind can be kept basically stationary, thereby realizing lighting in the upper part while shading in the lower part. However, when the thickness of the blind fabric is thick, the winding diameter caused by the rotation of the roller shaft increases continuously, and at this time the lower end of the roller blind will rise, thereby realizing a certain degree of upward movement of the lower rod of the roller blind, and at this time the upper and lower parts can be lighted at the same time. This characteristic of the thickness of the blind fabric challenges the sealing performance of the lower end of the lifting roller blind, but it can also become a kind of adjustment mode of this kind of roller blind.

[0005] The present application is to utilize this characteristic of the thickness of the blind fabric to realize a new adjustment mode of the lifting roller blind. SUMMARY

[0006] The present invention provides a non-uniform thickness roller blind fabric for a lifting roller blind, which can achieve various effects such as upper light or simultaneous upper and lower light.

[0007] The present invention is achieved in this way.

[0008] A roller blind fabric, the thickness of which is non-uniform in the winding direction. Here, the non-uniform thickness in the winding direction means that the fabric is divided by a parallel line parallel to the roller, and the thickness of at least two divided parts is not equal.

[0009] Preferably, the thickness of the fabric is thinner in the upper part and thicker in the lower part in the winding direction. That is, the fabric is divided by a parallel line parallel to the roller, and the upper part is thinner and the lower part is thicker. In this way, when the fabric is wound to the lower part which is thicker, the lower end of the fabric will rise faster, and the lower part of the window blind will be opened for light.

[0010] Preferably, the thickness of the fabric is non-uniform in the winding direction. Here, the non-uniform thickness means that a soft cloth with a length equal to the width of the fabric is attached to the middle part of the fabric parallel to the roller, so that the thickness of the fabric is locally increased. In this way, when the fabric is wound to this part, the lower end of the fabric will rise faster, and the lower part of the window blind will be opened for light.

[0011] The present invention is further described below by way of examples with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 Front view of the non-uniform thickness roller blind fabric.

[0013] Figure 2 Side view of the non-uniform thickness roller blind fabric when the lifting roller is at the top of the window.

[0014] Figure 3 Side view of the non-uniform thickness roller blind fabric when the lifting roller is at the middle of the window.

[0015] Figure 4 Side view of the non-uniform thickness roller blind fabric when the lifting roller is at the lower end of the window.

[0016] Figure 5 Front view of the fabric with the additional part attached.

[0017] Figure 6 Side view of the fabric with the additional part attached when the lifting roller is at the top of the window.

[0018] Figure 7 Side view of the fabric with the additional part attached when the lifting roller is at the lower end of the window.

[0019] In the figure, 1 is the window section, 2 is the lifting roller, 3 is the lower rod, 41 is the thinner curtain fabric, 42 is the thicker curtain fabric, and 43 is the additional part attached to the middle of the curtain fabric. DETAILED DESCRIPTION EMBODIMENT

[0020] As shown in the figure, the uneven thickness curtain fabric is composed of the thinner upper part 41 and the thicker lower part 42, the upper end is connected to the lifting roller 2, and the lower end is connected to the lower rod 3. Figure 1 EMBODIMENT

[0021] The curtain driven by the lifting roller uses the uneven thickness curtain fabric described in Embodiment 1, as shown in the figure, when the lifting roller 2 is at the top of the window, the lower rod 3 is close to the lower end of the window, and the curtain fabric is in the fully shaded state. As shown in the figure, when the lifting roller is lowered to the middle of the window, the winding diameter changes slightly, the lower rod 3 is still close to the lower end of the window, and the curtain fabric is in the upper lighted and lower shaded state. As shown in the figure, when the lifting roller is lowered to the lower part of the window, the winding diameter changes significantly due to the thicker lower curtain fabric, the lower rod 3 quickly moves away from the lower end of the window, and the curtain fabric is in the upper and lower lighted state. Figure 2 Figure 3 Figure 4 EMBODIMENT

[0022] As shown in the figure, an additional part 43 of thicker fabric is attached to the middle of the thinner curtain fabric 41 to form an uneven thickness curtain fabric. Figure 5 EMBODIMENT

[0023] The curtain driven by the lifting roller uses the uneven thickness curtain fabric described in Embodiment 3, as shown in the figure, when the lifting roller 2 is at the top of the window, the lower rod 3 is close to the lower end of the window, and the curtain fabric is in the fully shaded state. If the lifting roller is lowered to the middle of the window close to the additional part, the winding diameter changes slightly, the lower rod 3 is still close to the lower end of the window, and the curtain fabric is in the upper lighted and lower shaded state. As shown in the figure, when the lifting roller is lowered to the lower part of the window, the roller winds through the additional part, the winding diameter changes significantly due to the additional part 43 thickening the curtain fabric, the lower rod 3 quickly moves away from the lower end of the window, and the curtain fabric is in the upper and lower lighted state. Figure 6 Figure 7

[0024] The advantage of the present application is that only the uniform rotation and lifting of the driving roller are needed to make the window half open with the upper part lighted and the lower part shaded, and fully open with the upper and lower parts lighted simultaneously. Compared with the existing solution, which requires complex double motor motion coordination to achieve the switching of the curtain fabric in multiple shading modes, only the thickness of the curtain fabric needs to be changed in sections. This simplifies the motion mechanism of the lifting roller curtain and reduces costs, increasing reliability.​​​​​​​

Claims

1. A roller blind fabric, characterized in that: The thickness of the fabric varies in the winding direction.

2. The curtain fabric as described in claim 1, characterized in that... The fabric thickness is thinner at the top and thicker at the bottom in the winding direction.

3. The curtain fabric as described in claim 1, characterized in that... The thickness of the fabric can be adjusted locally in the winding direction.

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