Patent Application
20160123072
1. Field of the Invention
The present invention relates generally to a curtain controller, and more particularly to a curtain controller, which can prevent the pull cord from jumping away and is mountable on a lower rail to speed the assembling process.
2. Description of the Related Art
In order to mount a conventional curtain controller in a lower rail, the size of the curtain controller is generally minified in adaptation to the height of the lower rail. Moreover, in structural design, the upper side of the pull cord winder is especially free from any structure to open the upper space so that a user can conveniently wind the pull cord onto the pull cord winder with hands. Therefore, the pull cord can be very quickly and conveniently wound on the pull cord winder of the conventional pull cord controller. However, there is no stop above the pull cord winder so that in operation of the pull cord, the jumping pull cord often jumps out of the pull cord winder from the upper side thereof to cause clog of the pull cord. This is a quite troublesome problem to a user.
It is therefore a primary object of the present invention to provide a curtain controller capable of preventing pull cord from jumping away. The front end of the controller main body has a connection seat main body. A stopper bar is transversely rotatably connected with the connection seat main body. When the stopper bar is rotated to a position where the stopper bar axially forward extends, the stopper bar is positioned above the pull cord winder to prevent the pull cord from jumping upward. When the stopper bar is 90-degree rotated to a transverse position, the space above the pull cord winder is fully unblocked. Under such circumstance, a user can conveniently and quickly wind the pull cord onto the pull cord winder with hand.
To achieve the above and other objects, the curtain controller capable of preventing pull cord from jumping away of the present invention includes a controller main body receivable in a curtain rail, a stopper bar connected with a connection seat on upper side of front end of the controller main body, a pull cord winder disposed in the controller main body by an inclination angle and a worm wheel drivingly engaged with the pull cord winder. When the stopper bar is rotated to a position where the stopper bar axially forward extends, the stopper bar is positioned above the pull cord winder to prevent the pull cord from jumping upward. When the stopper bar is 90-degree rotated and located by the connection seat in a transverse position, the space above the pull cord winder is unblocked from the stopper bar. Under such circumstance, a user can more conveniently and quickly wind the pull cord onto the pull cord winder.
Moreover, in order to mount the curtain controller on a lower rail, the pull cord winder is assembled with the controller main body by an inclination angle so as to lower the total height of the controller main body. In this case, the curtain controller can be mounted on the lower rail. Accordingly, the installation range is widened.
The present invention can be best understood through the following description and accompanying drawings, wherein:
Please refer to
Each of the first and second casings 10, 11 has a front end in the form of a slope structure 100, 110. A connection seat 101, 111 integrally extends from upper side of the front end slope 100, 110 of the each of the first and second casings 10, 11. One side of the connection seat 101 of the first casing 10 is a closed wall 102, while another side of the connection seat 101 is formed with a semicircular hole 103. The front end of the semicircular hole 103 communicates with a hollow space 104. The bottom face of the hollow space 104 is formed with a slope structure 105 with locating effect. The connection seat 111 of the second casing 11 includes an upper arm 112 and a lower arm 113. The two arms 112, 113 define therebetween a front hollow space and a lateral hollow space. In addition, one side of each of the two arms 112, 113 is formed with a semicircular hole 114, 115 corresponding to the semicircular hole 103 of the connection seat 101 of the first casing 10. The semicircular holes 114, 115 can be mated with the semicircular hole 103 to together form a circular hole. The lower arm 113 is formed with a slope 116 with locating effect. The rear ends of the upper and lower arms 112, 113 are formed with an engagement channel 117 for locating the stopper bar 2. The first and second casings 10, 11 are mated with each other to form a connection seat main body with a circular hole and hollow space at the front end of the controller main body 1. A cylindrical column 20 of the stopper bar 2 is inserted and connected in the circular hole of the connection seat main body, whereby the stopper bar 2 can be rotated within the hollow space.
The cylindrical column 20 is formed at the rear end of the stopper bar 2. A cantilever 21 extends from the front end of the cylindrical column 20. A wider stopper block 22 is formed at the front end of the cantilever 21. The cylindrical column 20 of the stopper bar 2 is connected in the circular hole of the connection seat, whereby the cantilever 21 and the stopper block 22 can be horizontally rotated within the hollow space of the connection seat main body.
Moreover, the opposite inner faces of the first and second casings 10, 11 are formed with perforations 106, 118 corresponding to each other. The worm wheel 3 has a toothed section 30 and two sleeve sections 31, 32 on two sides. The sleeve sections 31, 32 are received in the perforations 106, 118, whereby the worm wheel 3 is rotatable within the controller main body 1. The pull cord winder 4 has a threaded rod 40 on one side. The toothed section 30 of the worm wheel 3 is engaged with the thread of the threaded rod 40 to drivingly rotate the pull cord winder 4.
The pull cord winder 4 has a pull cord reel 41 on the other side. The pull cord reel 41 integrally extends from the threaded rod 40 for a pull cord to fixedly wind thereon. The circumference of the pull cord reel 41 is formed with a through hole 42 in communication with the shaft hole 43 of the pull cord reel 41. The pull cord is conducted through the through hole 42 into the shaft hole 43 to be knotted and affixed to pull cord reel 41. The threaded rod 40 of the pull cord winder 4 is received in a receiving socket formed on the opposite inner sides of the first and second casings 10, 11 by a predetermined inclination angle. The first and second casings 10, 11 are mated with each other, whereby the pull cord reel 41 is connected with one side of the controller main body 1 in an inclined state. In addition, connection blocks 107 protrude from the bottom ends of the first and second casings 10, 11. The first and second casings 10, 11 are mated with each other and the connection blocks 107 are engaged in a window 50 of the movable cover board 5 to locate the movable cover board 5. In this case, the first and second casings 10, 11 are more securely assembled with each other.
A shaft seat 51 protrudes from the rear end of the movable cover board 5. A shaft rod 500 is passed through the shaft seat 51 to pivotally connect the movable cover board 5 with the controller main body 1, whereby the movable cover board 5 can be downward turned. The front end of the movable cover board 5 has a cord locating seat 52. The end face of the cord locating seat 52 is formed with two locating holes 53, 54 for the pull cord to pass through and locate. The cord locating seat 52 is further formed with splits 55, 56 in communication with the locating holes 53, 54. Accordingly, the pull cord can be conveniently quickly engaged into the locating holes 53, 54 from outer side through the splits 55, 56 or pulled out of the locating holes 53, 54 through the splits 55, 56 to achieve a fast assembling effect.
The above embodiments are only used to illustrate the present invention, not intended to limit the scope thereof. Many modifications of the above embodiments can be made without departing from the spirit of the present invention.
