Abstract

An adjustable bottom retainer used in coordination with a non-pull cord window blind includes a base, and first and second worm rods. The base is disposed in a bottom beam of the window blind and has a set of ladder cord inserting holes. The first worm rod is inserted in the base and has a rotation driving hole exposed on the bottom surface of the bottom beam, enabling a hand tool to be engaged with the rotation driving hole to drive the first worm rod. The second worm rod is inserted in the base, engaged with the first worm rod, and fastened to bottom ends of first and second longitudinal strings of a ladder cord. Therefore, rotating the first worm rod makes the second worm rod engaged therewith wind the first and second longitudinal strings, thereby adjusting the total length of the ladder cord.

IPC Classes  ?

• E06B 9/382 - Details of ladder-tapes or ladder-chains, e.g. buckles for local shortening of tapes
• E06B 9/303 - Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable with ladder-tape

Abstract

A retaining sheet is used for retaining to a slat of a venetian blind. The slat has a through hole for penetration of a lifting cord. The retaining sheet includes a main body with an upper surface, a lower surface, a hole, and a slot. The hole and the slot pass through the upper and bottom surfaces of the main body and communicate with each other. The width of the slot is smaller than the width of the hole, wherein the main body is configured when the retaining sheet is retained to the slat of the venetian blind, the hole of the main body corresponds to the through hole of the slat, and the lifting cord is penetrated through the hole and inserted into the slot when pulled by an external force. This can prevent the lifting cord from being drawn out for enhancing the safety of use.

IPC Classes  ?

• E06B 9/32 - Operating, guiding, or securing devices therefor

Abstract

A retaining sheet is used for retaining to a slat of a venetian blind. The slat has a through hole for penetration of a lifting cord. The retaining sheet includes a main body with an upper surface, a lower surface, a hole, and a slot. The hole and the slot pass through the upper and bottom surfaces of the main body and communicate with each other. The width of the slot is smaller than the width of the hole, wherein the main body is configured when the retaining sheet is retained to the slat of the venetian blind, the hole of the main body corresponds to the through hole of the slat, and the lifting cord is penetrated through the hole and inserted into the slot when pulled by an external force. This can prevent the lifting cord from being drawn out for enhancing the safety of use.

IPC Classes  ?

• E06B 9/26 - Lamellar or like blinds, e.g. venetian blinds

Abstract

A ladder rope retaining device includes a support base, a rotating base, and an elastic positioning member. The support base has a bottom wall and two opposite straight walls connected with the bottom wall and each having a pivot trough. The rotating base includes a pivot pivotally disposed in the pivot troughs, and a ladder rope retaining portion formed on the pivot. The pivot has a plurality of positioning recesses arranged in an equally-spaced manner. The elastic positioning member is disposed to one of the straight walls of the support base and elastically engaged with one of the positioning recesses of the pivot. Thus, when the rotating base is rotated relative to the support base, the positioning recesses are alternately engaged with and disengaged from the elastic positioning member to generate a better operating feel.

IPC Classes  ?

• E06B 9/307 - Details of tilting bars or their operation
• E06B 9/266 - Devices or accessories for making or mounting lamellar blinds or parts thereof

Abstract

A ladder rope retaining device includes a support base and a rotating base. The support base has a bottom wall and two opposite straight walls connected with the bottom wall. The bottom wall has two opposite elastic support portions protruding out of the bottom surface thereof. The straight walls each have a pivot trough. A positioning bump is formed at the periphery wall of one pivot trough. The rotating base includes a pivot pivotally disposed in the pivot troughs, and a ladder rope retaining portion formed on the pivot. The pivot has a plurality of positioning recesses arranged in an equally-spaced manner. When the rotating base is rotated relative to the support base, the positioning recesses are alternately engaged with and disengaged from the positioning bump to generate a better operating feel. As they are disengaged from each other, the support base becomes deformed elastically.

IPC Classes  ?

• E06B 9/307 - Details of tilting bars or their operation
• E06B 9/266 - Devices or accessories for making or mounting lamellar blinds or parts thereof

Abstract

A slat includes two through holes each provided at its periphery wall with a first wall surface and a second wall surface. First and second teeth protrude from the front and rear ends of the first wall surface towards the second wall surface. The distances between the first and second teeth and the second wall surface are smaller than the diameter of a lifting cord. A third tooth staggered with the first tooth and a fourth tooth staggered with the second tooth protrude from the front and rear ends of the second wall surface towards the first wall surface. The distances between the third and fourth teeth and the first wall surface are smaller than the diameter of the lifting cord. As such, the slat prevents a rope loop from being enlarged for enhancing the safety of use.

IPC Classes  ?

• E06B 9/307 - Details of tilting bars or their operation

Abstract

A Venetian blind includes a plurality of slats arranged between a headrail and a bottom rail. Two rotary drums are disposed in two brackets mounted in the headrail and connected with each other through a transmission shaft. A first drawing member is connected with one rotary drum, and a second drawing member is connected with the other rotary drum. When the first drawing member is pulled downward, the rotary drums are rotated from a first position to a second position, such that the ladder cords are driven by the rotation of the rotary drums to tilt the slats to a closed position. When the second drawing member is pulled downward, the rotary drums are rotated from the second position to the first position, such that the ladder cords are driven by the rotation of the rotary drums to tilt the slats to an open position.

IPC Classes  ?

• E06B 9/322 - Details of operating devices, e.g. pulleys, brakes, spring drums, drives
• E06B 9/326 - Details of cords, e.g. buckles, drawing knobs
• E06B 9/307 - Details of tilting bars or their operation

Abstract

A slat angle adjustment device for a window blind includes a casing, a transmission unit, and a driving rod. The casing has a flange inside. The transmission unit has a first worm shaft and a second worm shaft. The first and second worm shafts are rotatably disposed in the casing and meshed with each other. The driving rod has a flexible wing at an outer surface thereof. When assembled, the driving rod is inserted into the casing through a bottom hole of the casing. During the insertion of the driving rod, the flexible wing is compressed by the flange. Once the flexible wing passes through the flange, the flexible wing is restored and engaged with the flange. By this way, a consumer doesn't adjust repeatedly the assembly angle of the driving rod so as to reduce assembly time and increase assembly convenience.

IPC Classes  ?

• E06B 9/307 - Details of tilting bars or their operation
• E06B 9/322 - Details of operating devices, e.g. pulleys, brakes, spring drums, drives
• E06B 9/06 - Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type

Abstract

A double-layer cord rolling device includes a driving unit and a cord rolling unit disposed under the driving unit. The driving unit has an upper base, two upper wheels rotatably disposed on the upper base, and a torsion spring connected with the upper wheels. The cord rolling unit has a lower base, two lower wheels rotatably disposed on the lower base and coaxially mating with the upper wheels, and two transmission cords respectively connected with the lower wheels. One of the upper wheels is connected with one respective lower wheel through a transmission member, thereby rotatable synchronously. As a result, the double-layer cord rolling device of the present invention is shortened in length on the whole without affecting its functioning, thereby attaining the effect of miniaturization.

IPC Classes  ?

• E06B 9/323 - Structure or support of upper box
• E06B 9/322 - Details of operating devices, e.g. pulleys, brakes, spring drums, drives

Abstract

A dual-torsion-spring cord rolling device includes driving and transmission units. The driving unit has first and second torsion spring gears engaged with each other, a first torsion spring connecting the first and second torsion spring gears, a wheel adjacent to the first torsion spring gear, and a second torsion spring connecting the second torsion spring gear and the wheel. The transmission unit has first and second transmission gears rotatable synchronously by the driving of the second torsion spring gear, and two lift transmission cords attached to the first and second transmission gears respectively.

IPC Classes  ?

• E06B 9/322 - Details of operating devices, e.g. pulleys, brakes, spring drums, drives
• B65H 75/48 - Automatic re-storing devices

Abstract

A ladder cord fastening seat for a non-pull window blind includes two vertical posts located opposite to each other and an arc bridge. The ladder cord fastening seat is fastened in a top beam through the two vertical posts. Each of the vertical posts has a cord inserting hole for a ladder cord to be inserted therethrough. The arc bridge is used for fastening the ladder cord. The arc bridge connects the two vertical posts in such a way that an accommodation space is defined to accommodate a transmission member located in the top beam.

IPC Classes  ?

• E06B 9/323 - Structure or support of upper box
• E06B 9/382 - Details of ladder-tapes or ladder-chains, e.g. buckles for local shortening of tapes
• E06B 9/32 - Operating, guiding, or securing devices therefor

Abstract

A cord separator used in a blind cord winding mechanism is disclosed to include a support portion, two wing portions respectively and outwardly extended from two opposite lateral sides of the support portion and respectively defining therein a cord insertion hole for the passing of one respective transmission cord, and two extension portions respectively perpendicularly extended from the wing portions along the axial direction of the cord insertion holes in parallel manner and respectively terminating in a positioning end portion for hooking on one respective side post of the blind cord winding mechanism so that the cord separator is capable of separating two transmission cords of the blind cord winding mechanism and preventing the two transmission cords from interfering with each other or being tangled during transmission.

IPC Classes  ?

• E06B 9/322 - Details of operating devices, e.g. pulleys, brakes, spring drums, drives
• E06B 9/382 - Details of ladder-tapes or ladder-chains, e.g. buckles for local shortening of tapes
• E06B 9/68 - Operating devices or mechanisms, e.g. with electric drive

Abstract

A blind body actuator casing includes a plastic top panel defining a bottom wall, a plastic bottom panel defining a top wall and detachably fastened to the plastic top panel with a predetermined interval defined between the bottom wall of the plastic top panel and the top wall of the plastic bottom panel, and a plurality of metal wheel axles connected between the bottom wall of the plastic top panel and the top wall of the plastic bottom panel. Thus, the invention effectively reduces noises during rotation of rotary components that are mounted on the metal wheel axles.

IPC Classes  ?

• E06B 9/322 - Details of operating devices, e.g. pulleys, brakes, spring drums, drives
• B65H 75/34 - Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables

Abstract

A hand anti-cutting structure for a curtain cutting machine contains a base, a cutting mechanism, and a security mechanism. The cutting mechanism includes a through orifice, an insertion segment, an extension segment, an inserting direction, and a cutter. The security mechanism includes a rail assembly, a sliding seat, a touch switch, and a stop member. The rail assembly has at least slidable rail parallel to the inserting direction, and the sliding seat has a movable actuation member and an operation member. The touch switch is secured on a moving path of the actuation member, and when the actuation member moves to abut against the touch switch, the touch switch is turned on by the actuation member. The stop member is connected with and driven by the actuation member, wherein the stop member is located on the insertion segment and is perpendicular to the inserting direction of the cutting mechanism.

IPC Classes  ?

• B26D 5/10 - Hand or foot actuated means
• B26D 7/24 - Safety devices specially adapted for cutting machines arranged to disable the operating means for the cutting member

Abstract

A measurement structure is adapted for a curtain cutting machine, and the curtain cutting machine contains: a track, a slidable seat, a scale set, a cutting device, and a covering cover. The track includes a front segment and a rear segment, and the slidable seat is disposed on and slides along the track and includes a clamping apparatus. The scale set is secured on the track to indicate a position of the slidable seat, the cutting device is located adjacent to the front segment of the track and includes an opening, and the covering door is mounted between the cutting device and the track and moves between a first position and a second position. When the covering door slides to the first position, it stops the opening of the cutting device, and when the covering door slides to the second position, it opens the opening of the cutting device.

IPC Classes  ?

• B26D 7/02 - Means for holding or positioning work with clamping means
• B23D 23/00 - Machines or devices for shearing or cutting profiled stock
• B26D 7/28 - Means for performing other operations combined with cutting for counting the number of cuts or measuring cut lengths
• B26D 1/08 - Cutting through work characterised by the nature or movement of the cutting memberApparatus or machines thereforCutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates of the guillotine type
• D06H 7/00 - Apparatus or processes for cutting, or otherwise severing, specially adapted for the cutting, or otherwise severing, of textile materials
• B23D 33/02 - Arrangements for holding, guiding, or feeding work during the operation

Abstract

A curtain cutting machine contains: a base, a first cutting mechanism, and a movable platform. The base includes a fixed platform having a front segment and a rear segment. The first cutting mechanism includes a lower cutting assembly with plural first orifices and has an upper cutting assembly with at least one second orifice. The movable platform includes two support racks, two slidable adjusting devices, and a holding plate. The two support racks are arranged on a rear side of the fixed platform of the base and extend upwardly, each of the two slidable adjusting devices is mounted on each of the two support racks and moves forward and backward on each of the two support racks, the holding plate is connected with each slidable adjusting device to hold a curtain, and the holding plate moves forward and backward on the two support racks with the two slidable adjusting devices.

IPC Classes  ?

• B26D 1/00 - Cutting through work characterised by the nature or movement of the cutting memberApparatus or machines thereforCutting members therefor
• B26D 7/02 - Means for holding or positioning work with clamping means
• B26D 1/03 - Cutting through work characterised by the nature or movement of the cutting memberApparatus or machines thereforCutting members therefor involving a cutting member which does not travel with the work having a stationary cutting member with a plurality of cutting members