Noise-Reduced Motor-Driven Vertical Blind
First Claim
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1. A motor-driven vertical blind comprising:
- a top rail defining a interior recess, having a channel on said recess for said recess to communicate with the outside;
two guide members adjacently disposed and sliding in said recess;
each said guide member having a guide hole with a guide block protruding from the side wall of said guide hole, and a guide groove with a wing rib protruding therefrom;
a plurality of slide sets disposed on both sides of said two guide members, wherein each said slide set having a slide base sliding in said recess and a curtain piece mounted on said slide base, said slide base disposed side by side, each said slide base comprises a base body, a rotation shaft pivotally coupled to said base body and connected to said curtain piece, a driving shaft pivotally coupled to said base body and connected to said rotation shaft, and a fastening block protruding from said base body, wherein a plurality of racks protruding from said rotation shaft, and in between any two racks recesses with a groove and the blocking wall is defined the partial grooves, said driving shaft is composed of a hollow shaped inactive member and an active member which pivotally coupled to each other;
a vortex sheet surrounding the outer periphery of said inactive member and a plurality of clasping blocks protruding from said inactive member, a plurality of obstructing blocks disposed on said active member corresponding to said clasping block;
a plurality of connection members and protruding blocks protruding from both side edges of every said connection member;
a transmission device, comprising a thread shank and a transmission shaft disposed in said recess, a first and a second gear connected to both said thread shank and said transmission shaft, and a motor driving said first gear and said second gear;
a control device having a driving circuit electrically connected to said motor, a controller electrically connected to said driving circuit, a current limiting circuit disposed between said driving circuit and an external power, and a detection circuit electrically connected to both said current limiting circuit and said controller; and
a limiting device disposed on said transmission shaft to make said transmission shaft to stop in operation.
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Accused Products
Abstract
A motor-driven vertical blind is provided with a restricting device disposed on the transmission shaft and a control device disposed on the transmission device. When curtain pieces held by the slide base move, the transmission device is in control of the swing angles: the transmission shaft will be blocked by the restricting device, whenever the output current of the motor increases above a normal range. Meanwhile, when the control device detects an overloading current, an “off” signal to stop the operation is transmitted to the motor.
15 Citations
3 Claims
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1. A motor-driven vertical blind comprising:
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a top rail defining a interior recess, having a channel on said recess for said recess to communicate with the outside; two guide members adjacently disposed and sliding in said recess;
each said guide member having a guide hole with a guide block protruding from the side wall of said guide hole, and a guide groove with a wing rib protruding therefrom;a plurality of slide sets disposed on both sides of said two guide members, wherein each said slide set having a slide base sliding in said recess and a curtain piece mounted on said slide base, said slide base disposed side by side, each said slide base comprises a base body, a rotation shaft pivotally coupled to said base body and connected to said curtain piece, a driving shaft pivotally coupled to said base body and connected to said rotation shaft, and a fastening block protruding from said base body, wherein a plurality of racks protruding from said rotation shaft, and in between any two racks recesses with a groove and the blocking wall is defined the partial grooves, said driving shaft is composed of a hollow shaped inactive member and an active member which pivotally coupled to each other;
a vortex sheet surrounding the outer periphery of said inactive member and a plurality of clasping blocks protruding from said inactive member, a plurality of obstructing blocks disposed on said active member corresponding to said clasping block;a plurality of connection members and protruding blocks protruding from both side edges of every said connection member; a transmission device, comprising a thread shank and a transmission shaft disposed in said recess, a first and a second gear connected to both said thread shank and said transmission shaft, and a motor driving said first gear and said second gear; a control device having a driving circuit electrically connected to said motor, a controller electrically connected to said driving circuit, a current limiting circuit disposed between said driving circuit and an external power, and a detection circuit electrically connected to both said current limiting circuit and said controller; and a limiting device disposed on said transmission shaft to make said transmission shaft to stop in operation. - View Dependent Claims (2, 3)
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Specification