Abstract: A bracket and head rail assembly is provided. A recess is formed at both ends of the upper portion of a head rail. The recess is sunken at both sides to form a first slot and a second slot. The bracket includes a body and a fastener, wherein a claw is extended from the body, and an elastic part is extended from the fastener and bears against the body, such that the fastener is slidably disposed in the body. When being assembled, the first and second slots are easily locked with the claw and the fastener, and alternatively, they are exchanged with each other for locking with the claw and the fastener respectively. Then, the head rail and the fastener are designed into a thin configuration, and then, formed by bending and processing sheets, so as to achieve the advantages of simple assembly, mass production, and nice appearance.

Abstract: A solar power charging device with a self-protection function is provided, which includes a solar cell, a rechargeable battery, and a diode. The solar cell defines an open-circuit voltage Voc and an operating voltage Vop, in which the Voc is slightly higher than the Vop. The rechargeable battery defines a battery voltage, an operating voltage of load Vload, and a maximum charging voltage Vf, in which the Vf is substantially equal to the Voc. The diode has an anode connected to the solar cell and a cathode connected to the rechargeable battery. When the battery voltage of the rechargeable battery is lower than the Vop, the solar cell provides the rechargeable battery a fully-efficient charging current. When the battery voltage is raised to be equal to the Voc, the solar cell provides the rechargeable battery a charging current of zero, thus preventing the rechargeable battery from being overcharged.

Abstract: A cord lock apparatus of a window shade is provided, which includes a base, a panel structure, and a cord gripping device. The base includes an adjustable portion allowing cords to pass through and a first-direction ascending opening is formed allowing the cords to be alternatively positioned. The panel structure having an insert plate and a second-direction ascending opening is provided allowing cords to pass through, when the cords are selectively positioned along the inclined surface, the panel structure is moved in a vertically upward or downward motion. The cord gripping device has an engaging block and a knurled roller, the engaging block is removably attached within the accommodation recess. The knurled roller is positioned near the top of the engaging block and a gap is formed therebetween, such that the knurled roller is frictionally locked with or released from the cords when the panel structure moves vertically downward or upward.

Abstract: A cord safety device for a window covering includes a first and a second body. The first body includes: a first pivot portion, disposed on a periphery; a first fixing portion, disposed on a periphery at a predetermined angle with respect to the first pivot portion; a first stop portion, disposed on an inner side of the first body and protruded towards the second body; a first recess, disposed on an upper periphery; and a guiding block, disposed on one end of the first stop portion adjacent to the first fixing portion, in which the guiding block has a guiding surface for guiding the cords. The second body includes: a second pivot portion, disposed corresponding to the first pivot portion; and a second fixing portion, disposed corresponding to the first fixing portion, thereby being separably fixed with the first fixing portion.

Abstract: A hanger assembly for displaying the louvers of vertical window blinds, being used to hang a group of louvers comprising a plurality of overlapping louvers. A hanging hole is formed passing through an end towards a major axis of the group of louvers. The hanger assembly comprises a hanging member and a connection member passing through the hanging hole of the group of louvers, in which one end is formed at a predetermined position of the hanging member and the other end is provided with at least a stopper corresponding to an extreme outside of the group of louvers to make the group of louvers axially wiggle along a predetermined portion of the connection member and to further house the hanging member in the group of louvers, preventing the hanging member from being damaged during shipment or carry and reducing a material of package and cost of stock and shipment.

Abstract: A louver blade positioning device of a motorized shutter assembly includes an indented positioning portion or a protruded portion formed upon a driving shaft and a resilient member coming into contact with the driving shaft and the indented positioning portion or the protruded portion in a radically movable manner at a fixed angle. When the louver blades are rotated to approach a specific angle, the resilient member moves into the indented positioning portion or the protruded portion. Through the resilient force exerted by the resilient member on the indented positioning portion or the protruded portion, the driving shaft rotates to approach the specific angle, such that the louver blades become positioned at the specific angle when being rotated to approach the specific angle, thereby becoming free from the angular clearance inherent among transmission components of the motorized shutter assembly.

Abstract: A blind includes a headrail, a bottomrail, a plurality of slats positioned between the headrail and the bottomrail, a plurality of ladders, a plurality of lift cords and a plurality of connectors. Each ladder is composed of two vertical portions and a plurality of rungs in parallel between the two vertical portions. The lift cords are positioned at two opposite sides of the slats and near the vertical portions of the ladders. Each slat has at least a hole near a longitudinal side edge, and a connector is deposited between the ladder and each slat. Then the connectors can combine the ladders and the lift cords with the slats in such a way that the slats can be kept from moving so as to shut off light effectively.

Abstract: A blind fixing holder includes a first convex wall and a second convex wall facing each other for assembling a roller thereon. The first and the second convex wall are respectively and symmetrically bored with a vertical slide groove and a horizontal slide groove communicating with each other. The vertical slide groove has its upper end formed with an opening and its lower end formed with a contracted neck. Thus, the opposite ends of the roller can be fitted in the horizontal slide grooves and shifted therein through the openings and the contracted necks of the two opposite vertical slide grooves. The roller can be shifted leftward or rightward in the horizontal slide groove for the pull cord at either side of the blind to be wound and supported thereon.

Abstract: An adjustable hanging apparatus for blind valances is provided. The hanging apparatus includes a hanging device and a mounting device. The hanging device has a hook, which can be slidably hooked over a headrail. In addition, a base of the hanging device has an opening. The opening is disposed with two resilient mounting plates, and each mounting plate has a plurality of troughs. A neck portion is formed therebetween the mounting plates. The mounting device has a joint portion, which can engage with the valance. Also, a jam portion passes through the neck portion and mounted therein. Positioning flanges can be engaged with the troughs of the mounting plates so as to limit the vertical movement of the mounting device, and the mounting device can be inserted through the opening in the vertical direction of any positions to adjust the valance to desired positions.

Abstract: A window covering has a headrail, a plurality of lift cords extending from the headrail and a plurality of shade elements positioned sequentially below the headrail. Each shade element has an upper edge and a lower edge which edges are substantially parallel to one another and oriented transverse to the lift cords. The shade elements are positioned so that when the shade elements are in a closed position the lower edge of one shade element abuts the upper edge of an adjacent shade element and when the shade elements are in an open position, the lower edge of the at least one shade element is spaced apart from the upper edge of an adjacent shade element. A first cord is attached to the upper edge of each shade element and a second cord is attached to the lower edge of each shade element.

Abstract: An electric blind includes a frame, a plurality of horizontal slat units, and a stepping motor. The frame has two side vertical rods pivotally connected with the slat units, and a linking rod is fixed with a lengthwise side of all the slat units, possible to force the slat units synchronously swing for an angle. The stepping motor unit is composed of a stepping motor and a controller. The stepping motor is positioned in a cavity of one of the two side vertical rods, connected with a slat of the salt units. Further the controller controls the rotating angle of the motor, and the stepping motor can rotate idle in case the motor should meet an exterior force (for example, in case of the slat units already swung to the largest angle), or the slat units are manually moved any time. Thus the electric blind may not easily be broken or damaged.

Abstract: A rail structure for window blinds is provided, which includes a body and at least one connecting member. The body has a pair of first flanges and a pair of second flanges. The first flanges are disposed on tops of two sides of the body, and the second flanges are disposed on bottoms of the two sides of the body. In addition, the connecting member is mounted to an outer surface of one side of the body, has a predetermined shape of constant cross-section profile, a length and a width, Besides, a flange is disposed on a predetermined position of the connecting member and extending to one side of the body. By the connecting members, the headrail appearance can be enhanced. Moreover, as the connecting members do not directly bear the overall or partial weight of the window blind, the rail structure can have an extended product lifetime.

Abstract: A cord lock apparatus of a window shade is provided, which comprises a base, a panel structure, and a cord gripping device. The base includes an adjustable portion allowing cords to pass through and a first-direction ascending opening is formed allowing the cords alternatively positioned. The panel structure having an insert plate and a second-direction ascending opening is provided allowing cords to pass through, when the cords are selectively positioned along the inclined surface, such panel structure is moved in a vertically upward or downward motion. The cord gripping device has an engaging block and a knurled roller, such engaging block is removably attached within the accommodation recess. The knurled roller is positioned near the top of the engaging block and a gap is formed therebetween, such that the knurled roller is frictionally locked with or released from the cords when the panel structure moves vertically downward or upward.

Abstract: A device for winding a suspension cord of a blind is provided to wind a suspension cord disposed on a blind. The suspension cord is spirally wound about a cord spool through a spiral guide groove of a guide component, and then arranged along the cord spool in sequence. Additionally, when the cord spool is connected to a power resilient element as a power source of rotation, friction force is applied to the cord spool through an adjusting component to adjust the output torque of the cord spool, such that the torque applied to the cord spool by the power resilient element can be balanced out with the torque applied to the cord spool by the gravity of the blind.

Abstract: A combination structure of a spring power assembly and a head rail is provided. A revolving shaft of a power spring is made to be perpendicular to a major axis of the head rail, so as to reduce the height of the head rail. The head rail has a first gripping part and the spring power assembly has a second gripping part corresponding to the first gripping part and a bayonet pin, which prevents the spring power assembly from being placed into the head rail along a wrong direction and/or prevents the spring power assembly from rotating along a wrong direction, so as to avoid damages to the spring power assembly caused by errors in the assembling process.

Abstract: A window covering has a plurality of shade elements, each having a first longitudinal edge and a second longitudinal edge. The shade elements are positioned sequentially below a headrail, and each shade element is made of a window covering material that can be rolled about the first longitudinal edge. A first rail extends from the headrail past the first longitudinal edge of each shade element and is connected to lowermost shade element or the bottom rail. A second rail extends from the headrail and is attached to lowermost shade element or the bottom rail and to the second longitudinal edge of each shade element. Rungs extend between the first rail and the second rail such that there is one rung below and corresponding to each shade element. The first longitudinal edge of each shade element rests upon a corresponding rung when the window covering is in a closed position. A control mechanism is connected to the first rail and is capable of moving the first rail relative to the second rail.

Abstract: A control device for Venetian blinds and a control method includes a position unit, a rope-control unit and a movement limit unit. The position unit is fixed in an upper rail. The rope-control unit consists of a wind wheel, a rope, an engage wheel and a clutch. The wind wheel is pivotally connected to the position unit, and the rope has one end fixed with the wind wheel and the other end hanging down for a user to handle. The rope rotates the wind wheel, and the engage wheel fits with the wind wheel and fixed with the hanging unit. The clutch is connected with and can be rotated by the wind wheel in a first direction, or the wind wheel and the engage wheel does not rotate together in case of rotation in a second direction. The movement limit unit has a lever member swung by the rope to engage with or disengage from the ratchet for the hiding unit to rise up or move down and be positioned stably.

Abstract: A method of cutting a cellular shade and a cutting machine thereof mainly applicable for cutting an assembled cellular shade to a certain size is provided. The cutting method includes providing an assembled cellular shade; providing a cutting machine having a sawing mechanism and a chopping mechanism; pulling out beams of the cellular shade, such that the beams and a cellular piece are staggered, and performing a beam cutting operation; and pulling out the cellular piece, such that the cellular piece and the beams are staggered, and performing a cellular piece chopping operation. The cutting machine mainly includes a table with at least one cutting work area disposed thereon. Using the assembly feature of the cellular shade, the beams and the cellular piece are staggered for a small distance temporarily.

Abstract: A rolling mechanism includes a base frame fastened to a top side of a window and having a coupling flange, a roller rotatably mounted below the base frame for stationary rotation and having a locating groove on its periphery, and at least one constraint member having a coupling portion pivotally coupled to the coupling flange of the base frame and a constraint portion extending from the coupling portion for engaging the locating groove of the roller and further limiting the rotary direction of the roller to one direction only.

Abstract: A safe disengaging device for the pull cord of a blind includes a male support base and a female support base. The male support base is fixed on the upper frame of a blind and provided with a protruding clasping block having its upper side formed with an engage shoulder. The female support base has its lower end tied with a pull cord and its upper end extending upward to form an elastic member corresponding to the clasping block of the male support base and having its upper free end formed with an engage hook to be engaged on the engage shoulder. When the pull cord is drawn by an excessively great force, the elastic member will be disengaged from the engage block, and the female support base together with the pull cord will fall off, avoiding accidents caused by improper operation of the pull cord and elevating safety in use.