JPS6156383B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an operating rod for a horizontal blind, which allows raising and lowering the blind bottom rail and tilting the slat from one place.

Conventional devices that have been proposed as blinds that can be tilted and raised and lowered at one location, such as the blind described in US Pat. A worm wheel fixed to the shaft is engaged, a hollow operating rod is connected to the hollow worm via a hollow hook joint, a brake equipped with a spring is attached to the lower end of the hollow operating rod, and a lifting cord is connected to the hollow worm from the outside of the top rail. The cord is sequentially passed through a worm, a hollow hook-type joint, and a hollow operating rod, and then pulled out, and the lifting cord is locked by pressing against the inner peripheral surface of the hollow operating rod with a brake shoe. However, the overall width of this blind is much longer than the length of the slats, so in addition to the problem that building windows cannot be fitted with slats that are the same length as the internal width of openings such as doors, this blind has Since the length of the operating rod is constant, there is a problem in that the grip may be positioned too high or too low depending on the operator.

SUMMARY OF THE INVENTION An object of the present invention is to provide a device which solves the above-mentioned problem of a blind, which allows both the lifting and lowering of the bottom rail and the tilting of the slats to be performed at one location.

In order to achieve the above object, the gist of the present invention is to provide a transmission device which bears the tilting axis of the slat of the top rail and a hollow shaft that projects diagonally downward from the top rail perpendicularly thereto, and transmits rotation from the hollow shaft to the tilting shaft. A hollow operating rod is connected to the hollow shaft via a hollow flexible joint, and a bottom rail lifting cord is sequentially passed through the hollow shaft, the hollow flexible joint, and the hollow operating rod.

Here, the hollow flexible joint includes a hollow hook-shaped joint, a coil joint, a tube joint, and the like.

The apparatus of the present invention will be explained based on embodiments shown in the drawings. As shown in Fig. 1, a hollow operating rod 3 that operates the elevation of the slat 2 descends from one end of the top rail 1, and a cord 5 that operates the elevation of the bottom rail 4 passes through the rod 3 and further hangs down from its lower end. do. Therefore, all operations of the blinds can be performed in one place. The left and right width of the top rail 1 is approximately the same as the left and right width of the slat 2, and the operating rod 3 hangs down from the front surface of the slat 2.

As shown in FIGS. 2 and 3, a block 6 is attached to the end of the top rail 1.
A hexagonal rod-shaped tilting shaft 7 extending in the longitudinal direction of the top rail 1 is supported on the top rail 1 . A hollow shaft 8, which is perpendicular to the tilting shaft 7 and projects diagonally downward from the top rail 1, is similarly supported by the block 6. A gear 10 that meshes with a face gear 9 fixed to a tilting shaft 7 is attached to the upper end of a hollow shaft 8. The upper end pipe 12 of the operating rod is connected to the hollow shaft 8 via a coil joint 11 with a tube. Operation rod 3 is upper and lower pipe 1
It has a double structure with 2 and 13 telescopic extensions, and its length can be freely adjusted with a screw 14.

Although not shown, a string 20 for adjusting the tilting of the slat 2 is wound around a drum integral with the tilting shaft 7, and tilts the slat 2 back and forth in accordance with the direction of rotation of the tilting shaft 7. On the other hand, the cord 5 extends upward between the bottom rail 4 and the slat 2, then enters the top rail 1, passes through a guide roll 16 provided in the block 6, and then passes through the hollow shaft 8, the coil joint 11, The locking metal fitting 1 passes through the operating rod 3 and is removably attached to the bottom of the grip 15.
It is pulled out downward from the hole 7 and reaches the knob 18.
An inner circumferential step 24 is formed in the upper part of the grip 15, and a compression coil spring 25 is disposed between the inner circumferential step and the thick walled portion 23 at the lower end of the pipe. Since the upper part of the locking fitting 17 is formed into a plug shape, the spring 25 is attached to the grip 16.
When pushed up, the locking fitting 17 enters the hollow part of the pipe 13 and clamps and locks the cord 5.
Further, when the grip 15 is pushed down against the elasticity of the spring 25, the locking metal fitting 17 falls out of the hollow part of the pipe 13, so that the cord 5 is released from the lock and can freely move up and down. The hollow shaft 8 may be made to protrude substantially horizontally from the front surface of the top rail 1 instead of diagonally downward. In some cases, the guide roll 16 may be a fixed guide.

In the embodiment shown in FIG. 4, the hollow shaft 8 and the upper pipe 12 of the operating rod 3 are connected via a hollow hook type joint 41, and bevel gears or pin wheels 42, 43 are used to transmit rotation from the hollow shaft 8 to the tilting shaft 7. are using. Although the hook-shaped joint 41 is larger in shape than the coil joint 11 of the previous embodiment, there is no deviation in rotation transmission due to elastic deviation.

In the embodiment shown in FIG. 5, a spur gear 51 is attached to the tilting shaft 7, a relay spur gear 52 that meshes with the spur gear 51 is supported on the block 6, and the spur gear 52 and the hollow shaft 8 are connected to a coil joint. 53. The cord 5 passes from the hollow portion of the spur gear 52 into the coil joint 53 and enters the hollow shaft 8 . The rotation of the hollow shaft 8 is transmitted to the tilting shaft 7 via a coil joint 53 and spur gears 52 and 51.

Although not shown, instead of the coil joint 53, a bevel gear or a helical gear may be fixed to the shaft of the relay spur gear 52 and the hollow shaft 8 to transmit rotation between the two. Furthermore, as shown in FIG. 9, a relay helical gear 54 is supported on the block 6 parallel to the tilting shaft 7 at a different level, and the helical gear is engaged with a hollow helical gear 55 fixed to the hollow shaft 8, thereby connecting the tilting shaft 7 and the relay helical gear 54. They may be connected by a hollow flexible joint such as a tube joint 56. In addition, helical gears 54, 55
Needless to say, it can be replaced with a bevel gear.

In the embodiment shown in FIG. 6, spur gears 61 and 62 are fixed to the tilting shaft 7 and the hollow shaft 8, respectively, and the two gears are connected via a rack body 63 having racks on the top and side surfaces. Therefore, the rotation of the hollow shaft 8 is transmitted to the tilting shaft 7 via the spur gear 61 and the rack body 63. The rack body 63, which is a gear with an infinite radius of curvature and is slidably supported on the block 6, may be a gear with a finite radius of curvature, that is, an annular internal gear, and its outer peripheral portion may be rotatably supported on the block 6.

In the embodiment shown in FIG. 7, friction wheels 71 and 72 are fixed to the tilting shaft 7 and the hollow shaft 8, respectively.
A compression spring 73 is disposed in the hollow bearing portion of the block 6 to press the friction wheel 71 against the friction wheel 72. Therefore, the rotation of the hollow shaft is transmitted to the tilting shaft 7 via the friction wheels 71, 72.

Next, the operation of the rod of the present invention will be explained. All operations of the blind can be carried out on the lower side of the operating rod 3. The operating rod 3 is connected via a hollow flexible joint 11 or 41 to a hollow shaft 8 projecting obliquely from the top rail 1 so as to be able to pivot about it, and a grip 15 is keyed to the operating rod 3.
When the grip 15 is turned left and right, the operating rod 3 and the hollow adjustable blind 11 or 41 are rotated, and the hollow shaft 8 is accordingly turned left and right. The rotation of the hollow shaft 8 causes the tilting shaft 7 to rotate back and forth, winding up one side of the string 20 and unwinding the other, thereby tilting the slat 2 back and forth. When grip 15 stops rotating, slat 2
will stop at that angle of inclination, so the desired slat inclination angle can be easily obtained.

The vertical movement of the blind, that is, the vertical movement of the bottom rail 4, is carried out by adjusting the cord 5 hanging from the operating rod 3. Connect the grip 15 to the coil spring 25
When you push down against the elasticity of the locking metal fitting 17
exits from the hollow part of the pipe 13, freeing the cord 5 held between them. As a result, when the cord 5 is released, the bottom rail 4 descends under its own weight and the cord 5 enters the operating rod 3. Conversely, when the cord 5 is pulled, the bottom rail 4 is pulled up and raised. When the bottom rail 4 reaches the desired position and the grip 15 is loosened, the grip 15 is pushed up by the repulsive force of the spring 25 and the locking metal fitting 17
is again fitted into the hole of the pipe 13 and locks the cord 5, so the bottom rail 4 stops at that position.

Two or three cords pass through the operating rod, so if the cords are concentrated in one place, when the locking metal fitting on the operating rod is pushed in, the locking metal fitting will lock all the cords equally. I can't. As a result, some of the cords may shift and the bottom rail may tilt. To prevent this, the locking fitting 80 in FIG. 8 has six symmetrical holes 82 in the bottom 81.
with a groove 8 continuing from the hole 82 in the conical plug part 83.
There are 4. By inserting two or three cords symmetrically into the holes 82 and grooves 84, the cords can be separated one by one to prevent them from shifting. Therefore, when the locking fitting 80 is pushed into the operating rod 3, the plug portion 83 evenly presses and locks all the cords against the inner wall of the operating rod 3. In this way, when the locking fitting shown in FIG. 8 is used, there is no possibility that the bottom rail will tilt. The lower end of the cord 5 can be connected to the bottom rail as before, or
As shown in the embodiment of FIG.
Attach it and let it hang. Furthermore, the knob 18 can be hung on the operating rod 3 with a hook 19 whose position can be adjusted elastically. The hook 19 may be fixed to the operating rod 3 by screwing. It is also possible to form the hook 19 integrally with the length adjusting screw 14 of the operating rod 3.

As mentioned above, if the rod of the present invention is installed in a blind that can raise and lower the blind and tilt the slat in one place, the position of the grip of the rod can be adjusted to suit the operator.
It is easy to operate, and the lifted/lowered cord that is pulled out is latched onto the rod, so the cord knob will not get tangled with the slat.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a blind according to an embodiment of the present invention, FIG. 2 is a side cross-sectional view of the main part of the blind shown in FIG.
3 is a cross-sectional view taken along the line - in FIG. 2, FIGS. 4 to 7, and 9 are views corresponding to FIG. 3 of another embodiment, and FIG. 8 is a cross-sectional view of another embodiment. It is an enlarged perspective view of a fastener. 1: Top rail, 2: Slat, 3: Operation rod, 4: Bottom rail, 5: Lifting operation cord,
6: Block, 7: Tilting shaft, 8: Hollow shaft, 9: Face gear, 10: Gear, 11: Coil joint, 12, 13: Upper and lower pipes, 14: Adjusting screw,
15: Grip, 16: Guide roll, 17: Locking metal fitting, 19: Hook, 23: Inner circumference step, 24: Outer circumference step, 25: Compression spring, 41: Hollow hook type joint, 42, 43, 51, 52, 61, 62: Gear, 53: Coil joint, 63: Rack body,
71, 72: Friction wheel, 80: Locking metal fitting, 81: Same bottom part, 82: Same hole, 83: Same plug part, 84: Same groove.

Claims (1)

[Scope of Claims] 1. A top rail, a block provided on the top rail, a tilting shaft bearing on the top rail, a hollow shaft bearing on the block and protruding from the top rail, and the tilting shaft and the hollow shaft bearing on the top rail. A rotation transmission mechanism provided between the shafts, a hollow swivel joint sequentially connected to the hollow shaft, a hollow operating rod, and a lifting cord passed through them from inside the top rail and pulled out from the hollow operating rod. 1. A horizontal blind operating rod, characterized in that the hollow operating rod is formed from an upper and lower double telescopic pipe. 2. The horizontal blind operating rod according to claim 1, characterized in that it is provided with a hook for hanging a lifting cord. 3. The horizontal blind operating rod according to claim 2, characterized in that the tubular hook is elastically fixed. 4. The horizontal blind operating rod according to claim 2 or 3, characterized in that the hook and the length adjustment screw of the upper and lower double telescoping pipe are integrally formed.