JP-2026514528-A - Window shades and their operating systems

JP2026514528AJP 2026514528 AJP2026514528 AJP 2026514528AJP-2026514528-A

Abstract

【summary】 An operating system for a window shade comprises a transmission shaft rotatable about a longitudinal axis; a speed stabilizer; the speed stabilizer comprises a housing having an inner wall; and a rotating plate disposed within the housing and configured to be rotatably coupled with the transmission shaft, the rotating plate supporting a plurality of friction elements angularly spaced relative to each other about the longitudinal axis of the transmission shaft, and a rotating plate rotatable with the transmission shaft with friction elements rubbing against the inner wall of the housing.

Inventors

フアン，チン－ティエン
ウ，ウェン－チン

Assignees

テーヨーカンパニーリミテッド

Dates

Publication Date: 20260511
Application Date: 20240703
Priority Date: 20230707

Claims (15)

An operating system for window shades, A transmission shaft that is rotatable around its longitudinal axis, Equipped with a speed stabilizer, The aforementioned speed stabilizer is A housing with an interior wall, A rotating plate disposed within the housing and configured to be rotationally coupled to the transmission shaft, the rotating plate supporting a plurality of friction elements spaced angularly apart from each other around the longitudinal axis of the transmission shaft, and a rotating plate rotatable with the transmission shaft with respect to the friction elements rubbing against the inner wall of the housing, An operating system for window shades.
The operating system according to claim 1, wherein the friction element is in lubricating contact with the inner wall of the housing.
The friction element is fixedly connected to a plurality of support arms coupled to the rotating plate. The operating system according to claim 1, wherein as the transmission shaft and the rotating plate rotate integrally around the longitudinal axis, the support arm is biased to displace the friction element toward the inner wall of the housing.
The operating system according to claim 3, wherein the support arm is biased by centrifugal force, and as the transmission shaft and the rotating plate rotate integrally around the longitudinal axis, the friction element presses against the inner wall of the housing.
The operating system according to claim 3, wherein each support arm is pivotally connected to the rotating plate.
The operating system according to claim 5, wherein the rotating plate has a pivot pin, and a plurality of the support arms are pivotally connected around the pivot pin.
The operating system according to claim 5 or 6, wherein the support arms include two support arms that are pivotally connected to the rotating plate at two positions away from the longitudinal axis.
The operating system according to claim 7, wherein each of the two support arms is pivotally connected to the rotating plate at two positions opposite each other in the diametrical direction.
Each of the two support arms has a connecting end and an end, and each of the two support arms is pivotally connected to the rotating plate at the connecting end. The operating system according to claim 7, wherein the coupling end of one of the two support arms is positioned adjacent to the other end of the two support arms.
The operating system according to claim 9, wherein each of the two support arms holds at least one of the friction elements at a position closer to the coupling end than to the end portion.
The operating system according to any one of claims 1 to 6, wherein each friction element is at least partially cylindrical in shape.
The operating system according to any one of claims 1 to 6, wherein the friction element is formed from a material comprising oil-resistant rubber, fluororubber, and silicone rubber.
The housing includes a casing and a lid, the casing and the lid being fastened together such that they define at least partially an inner cavity in which the rotating plate and the friction element are located. The actuation system according to any one of claims 1 to 6, wherein the transmission shaft extends through the casing and the lid.
Furthermore, it includes a control module connected to the transmission shaft, The operating system according to any one of claims 1 to 6, wherein the control module is operable to rotate the transmission shaft to extend or fold the light-shielding structure, and the speed stabilizer is positioned along the transmission shaft away from the control module.
Headrail and, A light-shielding structure suspended from the aforementioned headrail, An operating system according to any one of claims 1 to 6, comprising an operating system attached to the head rail and operable to extend and fold the light-shielding structure, Window shades.

Description

This invention relates to window shades, and more particularly to operating systems for window shades. This application claims priority to U.S. Provisional Patent Application No. 63/525,530, filed on July 7, 2023. Its disclosures are incorporated herein by reference. Some window shades employ a design where the bottom is raised using an operating cord and lowered using a wand. Specifically, pulling the operating cord drives a rotating mechanism, and this rotation is transmitted to a transmission shaft. This causes the transmission shaft to rotate, winding up the suspension cord connected to the bottom. When the user rotates the wand, an arrester attached to the wand releases the transmission shaft, allowing it to rotate freely as gravity causes the bottom to descend. This free fall of the bottom could potentially cause accidental collisions with the user or damage components of the window shade. This application describes an operating system for window shades that can address at least some of the aforementioned problems. According to one embodiment, the operating system for a window shade is A transmission shaft that is rotatable around its longitudinal axis, Equipped with a speed stabilizer, Speed stabilizers are A housing with an interior wall, A rotating plate is disposed within a housing and configured to be rotationally coupled with a transmission shaft, the rotating plate supporting a plurality of friction elements that are angularly spaced apart from each other around the longitudinal axis of the transmission shaft, and the rotating plate is rotatable with respect to the inner wall of the housing, with friction elements rubbing against the inner wall of the housing. In another embodiment, the present application provides a window shade equipped with the aforementioned operating system. This is a perspective view showing embodiments of window shades in different configurations.This is a perspective view showing embodiments of window shades in different configurations.Figure 1 is an exploded view of the window shade shown.This is an exploded view of the speed stabilizer installed in the operating system of a window shade.Figure 4 is an exploded view showing the speed stabilizer from a different angle.Figure 4 is a cross-sectional view showing an example of the operation of the speed stabilizer.Figure 4 is a cross-sectional view showing an example of the operation of the speed stabilizer.This is an exploded view showing a modified embodiment of a speed stabilizer. Figures 1 and 2 are perspective views showing embodiments of the window shade 100 in different states, and Figure 3 is an exploded view of the window shade 100. Referring to Figures 1 to 3, the window shade 100 may include a head rail 102, a movable rail 104, a light-blocking structure 106, and an operating system 108. In Figure 1, the window shade 100 is shown in a folded or raised state, and in Figure 2, it is shown in an extended or lowered state. The headrail 102 may be fixed to the top of the window frame and may have any desired shape. According to one structural example, the headrail 102 may have an elongated shape including a cavity that at least partially receives the operating system 108 of the window shade 100. The movable rail 104 can be suspended from the head rail 102 using a plurality of suspension members 110 (shown as dashed lines in Figure 2). According to one structural example, the movable rail 104 may be an elongated rail having a channel 104A adapted to receive the mounting of the light-shielding structure 106. The channels 104A of the movable rail 104 may be closed at both ends by two end caps 112. Examples of suspension members 110 are not limited to, but may include cords, strips, bands, etc. Each suspension member 110 may be connected to the movable rail 104 via fasteners 114. According to one example, the movable rail 104 may be the bottom rail of a window shade 100. A weighting element (measuring element) 116 may be placed within the channel 104A to provide stability to the movable rail 104 during use. The light-shielding structure 106 may have any suitable structure that can be expanded and folded between the head rail 102 and the movable rail 104. According to one structural example, the light-shielding structure 106 may have a cellular structure, which may include, but is not limited to, a honeycomb structure. In one embodiment where the light-shielding structure 106 has a cellular structure, two reinforcing strips 118A and 118B are attached to the upper and lower ends of the cellular structure, respectively, to facilitate assembly to the head rail 102 and the movable rail 104. During use, the light-shielding structure 106 and the movable rail 104 may be suspended from the head rail 102. The light-shielding structure 106 can be expanded or folded by displacing the movable rail 104 in a direction away from or closer to the head rail 102. Referring to Figures 1 to 3, the movable rail 104 is movable perpendicular to