An actuating system for a window shade includes a transmission axle rotatable about a longitudinal axis thereof, and a speed stabilizer including a housing having an inner wall, and a rotary plate disposed inside the housing and configured to rotationally couple to the transmission axle, the rotary plate carrying a plurality of friction elements angularly spaced apart from one another about the longitudinal axis of the transmission axis, the rotary plate being rotatable along with the transmission axle with the friction elements rubbing against the inner wall of the housing.
A window shade comprises a shade assembly that includes a roller connected to a shade structure, and has a first end coupled to a first bracket and a second end having a coupler, the roller being pivotally connected to the first bracket. The first bracket is provided with a roller lock movable between a locking position where the roller lock rotationally locks the roller to prevent rotation of the roller relative to the first bracket, and an unlocking position where the roller lock rotationally unlocks the roller for rotation of the roller relative to the first bracket. Moreover, the window shade includes a connector and a second bracket attachable to a support surface of a building, wherein the first bracket and the coupler are respectively connected to the connector and the second bracket when the shade assembly is mounted to the support surface of the building.
A window shade includes a shade assembly having a first end and a second end opposite to each other, the first end being coupled to a first bracket and the second end having a coupler, and a connector and a second bracket respectively attachable to a support surface of a building at two spaced-apart locations, wherein the first bracket at the first end of the shade assembly is operable to engage with and disengage from the connector, and the coupler at the second end of the shade assembly is operable to connect to and detach from the second bracket. Embodiments described herein also include a method of installing the window shade.
An actuating system for a window shade includes a transmission axle, a brake assembly and a clutch. The transmission axle is rotationally coupled to an axle adapter for rotation about a longitudinal axis. The brake assembly includes an arrester, a rotary element rotatable about the longitudinal axis, and a shift collar configured to couple and decouple the rotary element from the arrester, the shift collar switching from a decoupling position to a coupling position in response to a rotation of the rotary element in a first direction and from the coupling position to the decoupling position in response to a rotation of the rotary element in an opposite second direction. The clutch can couple and decouple the axle adapter from the rotary element, and has a clutch actuator rotatable about the longitudinal axis to switch the clutch between a clutch coupling state and a clutch decoupling state.
E06B 9/262 - Stores à lamelles ou similaires, p. ex. stores vénitiens à bandes horizontales ou verticales reliées entre elles de façon soupleStores en accordéon
E06B 9/322 - Détails des dispositifs de manœuvre, p. ex. poulies, freins, tambours à ressorts, commandes
E06B 9/90 - Mesures de sécurité contre le déroulement intempestif ou l'ouverture sans autorisationDispositifs de freinage ou d'immobilisationDispositifs pour limiter le déroulement automatiques pour immobiliser l'élément de fermeture dans différentes positions choisies
An actuating system for a window shade includes a transmission axle rotatable about a longitudinal axis thereof, a braking spring having an engaged state adapted to prevent rotation of the transmission axle and a release state allowing rotation of the transmission axle, and a brake actuating mechanism that is connected to the braking spring and includes a switching actuator and a position selector. The position selector has a first hold position for holding the braking spring in the engaged state and a second hold position for holding the braking spring in the release state. The position selector is switchable from the first hold position to the second hold position or from the second hold position to the first hold position through a back-and-forth movement of the switching actuator between an initial state and an actuating state.
E06B 9/322 - Détails des dispositifs de manœuvre, p. ex. poulies, freins, tambours à ressorts, commandes
E06B 9/262 - Stores à lamelles ou similaires, p. ex. stores vénitiens à bandes horizontales ou verticales reliées entre elles de façon soupleStores en accordéon
E06B 9/90 - Mesures de sécurité contre le déroulement intempestif ou l'ouverture sans autorisationDispositifs de freinage ou d'immobilisationDispositifs pour limiter le déroulement automatiques pour immobiliser l'élément de fermeture dans différentes positions choisies
An actuating system for a window shade includes a transmission axle, a braking spring having an engaged state adapted to prevent rotation of the transmission axle and a release state allowing rotation of the transmission axle, a brake actuating mechanism including a switching actuator operable between a first and a second position to switch the braking spring between the engaged state and the release state, the first position corresponding to the engaged state, and the second position corresponding to the release state, and a detent mechanism coupled to the brake actuating mechanism. The detent mechanism is switchable between a first biasing state where the detent mechanism applies a first biasing force that assists in keeping the switching actuator in the first position, and a second biasing state where the detent mechanism applies a second biasing force that assists in keeping the switching actuator in the second position.
E06B 9/262 - Stores à lamelles ou similaires, p. ex. stores vénitiens à bandes horizontales ou verticales reliées entre elles de façon soupleStores en accordéon
E06B 9/322 - Détails des dispositifs de manœuvre, p. ex. poulies, freins, tambours à ressorts, commandes
E06B 9/90 - Mesures de sécurité contre le déroulement intempestif ou l'ouverture sans autorisationDispositifs de freinage ou d'immobilisationDispositifs pour limiter le déroulement automatiques pour immobiliser l'élément de fermeture dans différentes positions choisies
An actuating system for a window shade includes a control module actuatable for adjusting a shading structure of the window shade. The control module includes a wand having a hollow interior, a flexible operating element extending outside the wand at a first end thereof, a handle coupled to the operating element and disposed at a second end of the wand, the handle being operable to pull the operating element for actuating the control module, and an anti-winding guard of an elongate shape, the operating element, the handle and the anti-winding guard being movable in unison relative to the wand. The anti-winding guard is configured to extend outside the wand between the handle and the second end of the wand when the handle moves away from the second end of the wand.
An actuating system for a window shade includes an axle coupling part rotatable for raising and lowering a movable rail of the window shade, a braking part and a brake coupling part connected with each other, the braking part being adapted to apply a braking force on the brake coupling part for preventing rotation of the brake coupling part, a lift actuating module including a spool connected with an operating part, the spool being rotatable in a winding direction to wind the operating part and in an unwinding direction to unwind the operating part, and a clutching mechanism including two clutching parts movable relative to the brake coupling part and the spool to selectively couple the axle coupling part to either one of the spool and the brake coupling part.
A support structure includes a rail configured to provide support for a shading structure of an electrically-driven window shade, the rail having a cavity adapted to receive an electric motor and being fixedly connected with a battery case holder having a plurality of first electric connectors, and a battery case having a plurality of second electric connectors, the battery case having an interior configured to receive one or more battery cells. The battery case is removable from the battery case holder and the rail for accessing to the interior of the battery case, and is connectable with the battery case holder so that the first electric connectors respectively contact with the second electric connectors for supplying electric power through the first and second electric connectors to an electric motor installed in the cavity of the rail.
An actuating system includes a sleeve, a braking part for applying a braking force to prevent rotation of the sleeve, a brake releasing part, an axle coupler and an engaging part. The brake releasing part is operable to cause the braking part to release the braking force for rotation of the sleeve. The axle coupler is disposed through the sleeve, and is rotatable for raising and lowering a movable rail of a window shade. The engaging part is disposed between and can be in rolling contact with the axle coupler and the sleeve. The engaging part has a coupling position with respect to the axle coupler where the sleeve and the axle coupler are locked to each other in a first direction of rotation, and is movable away from the coupling position for rotation of the axle coupler relative to the sleeve in a second direction of rotation.
E06B 9/302 - Stores à lamelles ou similaires, p. ex. stores vénitiens à lamelles horizontales, p. ex. non levables levables sans courroie de manœuvre, p. ex. avec pantographe ou tige à vis
E06B 9/322 - Détails des dispositifs de manœuvre, p. ex. poulies, freins, tambours à ressorts, commandes
An operating wand for a window shade includes an elongate rod extending along a lengthwise axis, a catching portion protruding along the lengthwise axis from an end of the elongate rod, and a shoulder portion protruding sideways from the catching portion. The operating wand is operable to connect with and detach from a rail of a window shade. In particular, an end of the operating wand provided with the catching portion and the shoulder portion can engage with the rail for pushing or pulling the rail in movement so as to collapse or expand the window shade.
E06B 9/322 - Détails des dispositifs de manœuvre, p. ex. poulies, freins, tambours à ressorts, commandes
E06B 9/78 - Dispositions ou dispositifs de manœuvre, de guidage ou de verrouillage pour fermetures à rouleauTambours à ressortsTambours à rubanLeurs dispositions de contrepoids pour la manœuvre manuelle directe, p. ex. au moyen de glands, au moyen de poignées
E06B 9/42 - Parties constitutives ou détails des stores à rouleau, p. ex. dispositifs de suspension, carters de stores
An actuating system for a window shade includes an axle coupling part rotatable for raising or lowering a bottom part of a window shade, an arresting part and an arrester coupling part connected with each other, the arresting part having a braking state and a release state, a clutching part carried with the arrester coupling part and movable relative to the arrester coupling part between a retracted state where the clutching part is disengaged from the axle coupling part and an extended state where the clutching part is engaged with the axle coupling part, and an actuating wheel movably linked to the clutching part, the actuating wheel being rotatable in a first direction to urge the clutching part to move from the retracted state to the extended state, and in an opposite second direction to urge the clutching part to move from the extended state to the retracted state.
E06B 9/302 - Stores à lamelles ou similaires, p. ex. stores vénitiens à lamelles horizontales, p. ex. non levables levables sans courroie de manœuvre, p. ex. avec pantographe ou tige à vis
E06B 9/322 - Détails des dispositifs de manœuvre, p. ex. poulies, freins, tambours à ressorts, commandes
An actuating system includes an actuating wheel coupled to an operating element, an axle coupling part disposed substantially coaxial to the actuating wheel and rotatable for raising or lowering a bottom part of a window shade, and a clutching part carried with a carrier and movably linked to the actuating wheel. The clutching part is movable between a retracted state for disengaging from the axle coupling part and an extended state for engaging with the axle coupling part. The actuating wheel is rotatable in a first direction to urge the clutching part to move from the retracted state to the extended state and drive the carrier and the axle coupling part to rotate in unison, and in a second direction to urge the clutching part to move from the extended state to the retracted state so that the actuating wheel is rotationally decoupled from the axle coupling part.
E06B 9/304 - Stores à lamelles ou similaires, p. ex. stores vénitiens à lamelles horizontales, p. ex. non levables levables avec courroie de manœuvre avec tige d'inclinaison et arbre de levage distinct
E06B 9/307 - Stores à lamelles ou similaires, p. ex. stores vénitiens à lamelles horizontales, p. ex. non levables levables avec courroie de manœuvre détails des tiges d'inclinaison ou leur manœuvre
E06B 9/322 - Détails des dispositifs de manœuvre, p. ex. poulies, freins, tambours à ressorts, commandes
An actuating system for a window shade includes a first rotary axle rotatable for displacing a bottom part, a second rotary axle rotatable for displacing an intermediate rail, and a limiting mechanism including a first and a second sliding part respectively linked movably to the first and second rotary axle. The first sliding part slides in a first direction when the first rotary axle rotates for lowering the bottom part and in a second direction when the first rotary axle rotates for raising the bottom part. The second sliding part slides in the first direction when the second rotary axle rotates for lowering the intermediate rail and in the second direction when the second rotary axle rotates for raising the intermediate rail. The first sliding part is prevented from sliding in the second direction via a contact between the first sliding part and the second sliding part.
E06B 9/322 - Détails des dispositifs de manœuvre, p. ex. poulies, freins, tambours à ressorts, commandes
E06B 9/262 - Stores à lamelles ou similaires, p. ex. stores vénitiens à bandes horizontales ou verticales reliées entre elles de façon soupleStores en accordéon
A panel assembly for a window shade includes a first and a second panel, and a plurality of transversal parts disposed between the first and second panels, each of the transversal parts being respectively attached to the first and second panels and including at least one cell having a hollow cell interior, wherein the first and second panels are movable relative to each other in opposite directions to pivot the transversal parts. Moreover, the panel assembly may include a plurality of flaps respectively coupled to the transversal parts, the flap of each transversal part respectively overlapping a connection region where an adjacent transversal part is attached to one of the first and second panels in a closed state of the panel assembly.
A window shade (100) includes a reel (128) coupled to a first control module (130) and connected with a panel assembly (104), a lift actuator (202) coupled to a second control module (204), and a switchable coupling mechanism (206). The panel assembly has an open state for light passage and a closed state blocking light passage. The first control module can drive the reel in rotation for winding and unwinding the panel assembly. The second control module can drive the lift actuator in rotation for switching the panel assembly to the open or closed state. The coupling mechanism has a coupling state in which it rotationally couples the lift actuator to the first control module, and an uncoupling state in which it rotationally uncouples the lift actuator from the first control module. The coupling mechanism is in the uncoupling state while the panel assembly is closed, and in the coupling state while the panel assembly is opened.
An actuating system (110) for a window shade includes a fixed support shaft (118), a rotary drum (120) pivotally connected with the support shaft, the rotary drum being rotatable for winding or unwinding a shading structure (104), and a limiting mechanism (124) disposed inside the rotary drum and including a threaded portion (160) provided on the support shaft, a stop portion (162), a limiting part (164), and a follower (166) engaged with the threaded portion, the stop portion and the limiting part being respectively disposed adjacent to a first and a second end of the threaded portion, and the follower being rotationally coupled to and slidable relative to the rotary drum. The rotary drum is rotatable in a first direction to drive the follower to slide toward a first position for engagement with the limiting part, and in an opposite second direction to drive the follower to slide toward a second position for engagement with the stop portion. The invention comprises also a window shade with a limiting mechanism with an unlocking state in which the drum is rotatable in both directions and a locked state preventing rotation of the drum in the winding up direction of the shading structure.
E06B 9/60 - Tambours à ressorts actionnés uniquement par des éléments de fermeture
E06B 9/24 - Écrans ou autres dispositifs protecteurs contre la lumière, notamment contre la lumière solaireÉcrans similaires pour protection de l'intimité ou pour des raisons esthétiques
E06B 9/322 - Détails des dispositifs de manœuvre, p. ex. poulies, freins, tambours à ressorts, commandes
A window shade (100) includes a reel (132) and an aperture control module (200) respectively assembled with a head frame (102), and a panel assembly (104) including transversal vanes (120) respectively connected with two panels (116, 118) of the panel assembly (104). The reel (132) is rotatable to wind and unwind the panel assembly (104). The aperture control module (200) includes a positioning arm (202) connected with a rubbing roller (136), and is operable to rotate the rubbing roller relative to the positioning arm and to displace the positioning arm and the rubbing roller between two positions, the rubbing roller (136) being displaced away from a sidewall (160) of the head frame (102) in a first position and pressing the panel assembly (104) against the sidewall (160) in a second position, the rubbing roller (136) being further rotatable relative to the positioning arm (202) in the second position to cause relative sliding between the two panels (116, 118) for switching the panel assembly (104) from a closed state blocking light passage to an open state allowing light passage.
E06B 9/262 - Stores à lamelles ou similaires, p. ex. stores vénitiens à bandes horizontales ou verticales reliées entre elles de façon soupleStores en accordéon
E06B 9/322 - Détails des dispositifs de manœuvre, p. ex. poulies, freins, tambours à ressorts, commandes
E06B 9/34 - Stores à lamelles ou similaires, p. ex. stores vénitiens à lamelles horizontales, p. ex. non levables du type à rouleau
A window shade includes a reel (132) and a roller (136) pivotally connected with a head frame (102) at two spaced-apart positions, a clutch operatively connected with the roller (136) and switchable between an engaged state preventing the roller (136) from rotating in a first direction and a disengaged state for rotation of the roller (136) in an opposite second direction, and a panel assembly (104) including multiple transversal vanes respectively connected with a first and a second panel. The reel (132) is rotatable to wind and unwind the panel assembly (104) with the first panel remaining in contact with the roller. The panel assembly (104) is switchable between an open state for light passage and a closed state blocking light passage by rotating the transversal vanes. The reel (132) is rotatable in an unwinding direction while the roller (136) is kept stationary by the clutch in the engaged state for switching the panel assembly (104) from the closed to the open state.
E06B 9/24 - Écrans ou autres dispositifs protecteurs contre la lumière, notamment contre la lumière solaireÉcrans similaires pour protection de l'intimité ou pour des raisons esthétiques
A control system (110) for a window shade (100) includes a suspension member (118), a first and a second casing portion (120, 140), a rotary drum (122), a torsion spring (144), a coupling member (146), a transmission axle (112), a central gear (142), a ring (150) and planetary gears (148). The rotary drum is pivotally connected with the first casing portion, and is rotatable to wind and unwind the suspension member. The torsion spring can bias the rotary drum for winding the suspension member, and has a first and a second end respectively affixed with the second casing portion and a coupling member. The transmission axle is disposed through the torsion spring, and is rotationally coupled with the rotary drum and the central gear. The ring is affixed with the second casing portion and has protruding teeth. The planetary gears are pivotally supported by the coupling member, and are respectively meshed with the central gear and the teeth of the ring.
E06B 9/56 - Dispositions ou dispositifs de manœuvre, de guidage ou de verrouillage pour fermetures à rouleauTambours à ressortsTambours à rubanLeurs dispositions de contrepoids
E06B 9/60 - Tambours à ressorts actionnés uniquement par des éléments de fermeture
E06B 9/68 - Dispositifs ou mécanismes de manœuvre, p. ex. à entraînement électrique
E06B 9/322 - Détails des dispositifs de manœuvre, p. ex. poulies, freins, tambours à ressorts, commandes
An actuating system for a window shade includes a suspension member, a casing having a fixed protrusion, a transmission axle disposed through the casing, a rotary drum arranged in the casing and rotationally coupled with the transmission axle, and an impeding part connected with the rotary drum and affixed with an end of the suspension member. The rotary drum is rotatable in a first direction for winding the suspension member, and in a second direction for unwinding the suspension member. The impeding part is movable relative to the rotary drum between a first and a second position, the impeding part when in the first position being movable with the rotary drum past the protrusion in any of the first and second direction, and the impeding part when in the second position being engageable with the protrusion to block rotation of the rotary drum in the second direction.
E06B 9/322 - Détails des dispositifs de manœuvre, p. ex. poulies, freins, tambours à ressorts, commandes
E06B 9/88 - Mesures de sécurité contre le déroulement intempestif ou l'ouverture sans autorisationDispositifs de freinage ou d'immobilisationDispositifs pour limiter le déroulement automatiques pour limiter le déroulement
22.
CORDLESS WINDOW SHADE AND SPRING DRIVE SYSTEM THEREOF
A spring drive system for a cordless window shade includes multiple rotary drums respectively connected with suspension cords, and one or more springs respectively connected with the rotary drums. The rotary drums are operatively connected with each other, so that they can synchronously rotate to wind and unwind the suspension cords. Moreover, each of the rotary drums is connected with an end of one spring. The spring torque can act to sustain a bottom part of the window shade at any desired height, and drive rotation of the rotary drums to wind the suspension cords when the bottom rail is raised upward.
The structures described herein use an actuating system that can selectively switch between a lower and a raise mode of operation by rotating a rod assembly, and use a downward displacement of a pull member to lower and raise the window shade depending on whether its switching state. The actuating systems are simple to operate, allow convenient adjustment of the window shade, and are safe as the pull member has a limited length of extension.
The structures described herein use an actuating system that can selectively switch between a lower and a raise mode of operation by rotating a rod assembly in two different directions, and use a downward displacement of a pull member to lower and raise the window shade depending on its switching state. The actuating systems are simple to operate, allow convenient adjustment of the window shade, and are safe as the pull member has a limited length of extension.
E06B 9/262 - Stores à lamelles ou similaires, p. ex. stores vénitiens à bandes horizontales ou verticales reliées entre elles de façon soupleStores en accordéon
E06B 9/322 - Détails des dispositifs de manœuvre, p. ex. poulies, freins, tambours à ressorts, commandes
E06B 9/323 - Structure ou support du carter supérieur
An actuating system that can selectively switch between a lower and a raise mode of operation by rotating a rod assembly (118) by a downward displacement of a pull member (120) to lower or raise the window shade (104) depending on whether its switching state. The actuating systems are simple to operate, allow convenient adjustment of the window shade, and are safe as the pull member has a limited length of extension.
E06B 9/262 - Stores à lamelles ou similaires, p. ex. stores vénitiens à bandes horizontales ou verticales reliées entre elles de façon soupleStores en accordéon
26.
MOTORIZED WINDOW SHADE AND METHOD OF OPERATING THE SAME
A motorized window shade includes a covering structure arranged between a fixed and a movable rail, an electric motor operable to drive displacement of the movable rail relative to the fixed rail, a control interface operable to control operation of the electric motor, and a motor controller respectively connected with the electric motor and the control interface. The control interface includes a first, a second and a third button, the first and second buttons being respectively operable to cause displacement of the movable rail in two opposite directions. The motor controller can record a current position of the movable rail as a limit position of the movable rail in response to a pressure concurrently applied on the third button and one of the first and second buttons. In some embodiments, methods of operating the motorized window shade are also described.
An actuating system for a window shade comprises a transmission axle, a spring drive unit operable to urge the transmission axle to rotate in a first direction for raising a shading structure of the window shade, and a control module including an arrester assembled around the transmission axle, and an operating cord operatively connectable with the transmission axle. The arrester has a locking state in which the arrester acts against the spring drive unit to block a rotational displacement of the transmission axle in the first direction, and an unlocking state in which rotation of drive axle is allowed. The operating cord is operable to turn the arrester from the locking state to the unlocking state and to drive rotation of the transmission axle in a second direction opposite to the first direction for lowering the shading structure of the window shade.
E06B 9/262 - Stores à lamelles ou similaires, p. ex. stores vénitiens à bandes horizontales ou verticales reliées entre elles de façon soupleStores en accordéon
E06B 9/30 - Stores à lamelles ou similaires, p. ex. stores vénitiens à lamelles horizontales, p. ex. non levables levables
E06B 9/32 - Dispositifs de manœuvre, de guidage ou de verrouillage
E06B 9/78 - Dispositions ou dispositifs de manœuvre, de guidage ou de verrouillage pour fermetures à rouleauTambours à ressortsTambours à rubanLeurs dispositions de contrepoids pour la manœuvre manuelle directe, p. ex. au moyen de glands, au moyen de poignées
28.
WINDOW SHADE AND ACTUATING SYSTEM AND OPERATING METHOD THEREOF
An actuating system (109) for a window shade (100) comprises a transmission axle (118), a spring drive unit (116) operable to urge the transmission axle to rotate in a first direction for raising a shading structure (104) of the window shade, and a control module (110) including an arrester (132) assembled around the transmission axle, and an operating cord (120) operatively connectable with the transmission axle. The arrester has a locking state in which the arrester acts against the spring drive unit to block a rotational displacement of the transmission axle in the first direction, and an unlocking state in which rotation of drive axle is allowed. The operating cord is operable to turn the arrester from the locking state to the unlocking state and to drive rotation of the transmission axle in a second direction opposite to the first direction for lowering the shading structure of the window shade.
E06B 9/322 - Détails des dispositifs de manœuvre, p. ex. poulies, freins, tambours à ressorts, commandes
E06B 9/262 - Stores à lamelles ou similaires, p. ex. stores vénitiens à bandes horizontales ou verticales reliées entre elles de façon soupleStores en accordéon
E06B 9/30 - Stores à lamelles ou similaires, p. ex. stores vénitiens à lamelles horizontales, p. ex. non levables levables
E06B 9/78 - Dispositions ou dispositifs de manœuvre, de guidage ou de verrouillage pour fermetures à rouleauTambours à ressortsTambours à rubanLeurs dispositions de contrepoids pour la manœuvre manuelle directe, p. ex. au moyen de glands, au moyen de poignées
E06B 9/42 - Parties constitutives ou détails des stores à rouleau, p. ex. dispositifs de suspension, carters de stores
A motorized window shade includes a head rail, a bottom part suspended from the head rail, and a covering structure arranged between the head rail and the bottom part. An electric motor is arranged in the head rail and is operable to drive a vertical displacement of the bottom part. The window shade further includes a control interface electrically connected with the electric motor, and suspended outward from the head rail. The control interface is operable to control rotation of the electric motor for raising and lowering the bottom part. An elongated tube may further be disposed outside the head rail. The elongated tube has an upper end connected with the head rail, and the control interface is assembled adjacent to a lower end of the elongated tube.
A window shade comprises a head rail, a plurality of slats, a bottom part, suspension cords connected with cord winding units, and a control module. The control module includes first and second drive axles, a sleeve affixed with the first drive axle, a transmission part connected with the second drive axle, an arrester assembled around the first drive axle, and a release unit including an actuator. The first drive axle is operable to control vertical movement of a bottom part, and the second drive axle is operable to adjust an inclination of the slats. The arrester has a locking state in which it blocks a rotational displacement of the first drive axle to keep the bottom part at a desired position, and an unlocking state allowing rotation of the first drive axle so that the bottom part lowers by gravity action. The actuator has a lengthwise axis, and is operable to move along the lengthwise axis from a first position to a second position to turn the arrester from the locking state to the unlocking state, and the actuator when in the first position can drive the second drive axle in rotation.
A window shade comprises a head rail, a shading structure, a bottom part, suspension cords connected with cord winding units, and a control module. The control module includes a drive axle assembled with the cord winding units, a sleeve affixed with the drive axle, an arrester assembled around the drive axle, and a release unit. The arrester has a locking state in which the arrester blocks a rotational displacement of the sleeve and the drive axle to keep the bottom part at a desired position, and an unlocking state in which rotation of the sleeve and the drive axle is allowed to lower the bottom part by gravity action. The release unit includes an actuator that is operatively connected with the arrester and has an elongated shape. The actuator can rotate about its lengthwise axis to turn the arrester from the locking to unlocking state.
E06B 9/307 - Stores à lamelles ou similaires, p. ex. stores vénitiens à lamelles horizontales, p. ex. non levables levables avec courroie de manœuvre détails des tiges d'inclinaison ou leur manœuvre
E06B 9/308 - Stores à lamelles ou similaires, p. ex. stores vénitiens à lamelles horizontales, p. ex. non levables levables avec courroie de manœuvre avec tige d'inclinaison et arbre de levage coaxiaux
32.
WINDOW SHADE HAVING A RESISTANCE BALANCING MECHANISM
A window shade comprises first and second rails, and a shading structure and a suspension cord connected between the first and second rails. The second rail includes a resistance balancing unit and a cord winding unit to which the suspension cord respectively connects. The resistance balancing unit comprises a housing having an abuttal surface, a pulley pivotally connected with the housing, and a torsion spring. The pulley has a winding portion around which the suspension cord is wrapped, and a shaft portion extending coaxial to the winding portion from a side thereof. The torsion spring is tightly mounted around the shaft portion and has at least one end. The pulley when rotating in one direction drives the end of the torsion spring to push against the abuttal surface of the housing, whereby the torsion spring loosens to allow rotation of the pulley relative to the torsion spring.
A control module may be used for raising and lowering a window shade. This configuration allows a user to pull the operating cord a predetermined distance to raise the window shade, then release the operating cord until it has retracted, and then pull the operating cord another predetermined distance to raise the window shade again. A brake mechanism is operably connected to a brake release and configured to lock or unlock the drive axle. A clutch is adapted to be mounted on the axle for selectively engaging the cord drum to the axle. The cord drum may rotate independent of the drive axle when a clutch is disengaged from the drive axle. As a result, movement of the operating cord will not cause the window shade to raise while the clutch is disengaged. When the clutch is engaged with the drive axle, the cord drum and adapter sleeve may rotate together to drive the rotation of the drive axle for raising the window shade.
An actuator mechanism for window coverings, such as, Venetian blinds that eliminates the use of pull cords and tilting wands is provided. The actuator mechanism includes a stop member engageable with at least one of the slats to stop tilting movement thereof and a clutch arrangement between a drive axle and a tilt control mechanism, responsive to the stop member engaging at least one of the slats, to disengage the tilting force applied to a ladder cord supporting the slats.
E06B 9/308 - Stores à lamelles ou similaires, p. ex. stores vénitiens à lamelles horizontales, p. ex. non levables levables avec courroie de manœuvre avec tige d'inclinaison et arbre de levage coaxiaux
A window covering having a head rail and a plurality of rows suspended from the head rail by a securement cord member and at least one opening cord member is provided. Each of the plurality of rows is collapsible and includes a pair of opposed longitudinal regions. The distance between the opposed longitudinal regions is varied by moving the securement cord member, the opening cord member, or both. The rows are also tilted into an open or closed position by moving the securement cord member, the opening cord member, or both. A bottom rail may also be provided and suspended from the head rail such that the plurality of rows are located between the head rail and the bottom rail.
brevets
