JPS5942182B2 - Kirikaekuratsuchisouchi - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION In response to the rotation of a working wheel in one direction and in the opposite direction, the present invention provides a method for sequentially rotating one and the other of a pair of gears disposed on an axis fixed to the working wheel. In particular, the present invention relates to a switching clutch device that selectively transmits rotation to a blade opening/closing shaft and a blade rotation shaft in order to sequentially transfer rotation of an operating wheel operated by an appropriate means such as a pole chain in a vertical blind. The present invention relates to a switching clutch device suitable for use in transmission to a shaft.

The present invention will be described below with respect to an embodiment of the present invention applied to a vertical blind, but the present invention can be similarly applied to other mechanisms requiring similar switching.

In the figure, 1 is a blade opening/closing shaft of a vertical blind, 2 is a blade rotating shaft, 3 is an operating wheel, and 4 is a pole chain for operating this operating wheel.

As shown, the actuating wheel 3 has a pair of halves 3t, 3
//, which are combined to form an integrated operating wheel 3.

Note that a groove (not shown) into which a protrusion 17 provided on the clutch frame 18 is inserted is formed inside the half portion 3' of the operating wheel 3.

This transmission device for vertical blinds first moves the operating wheel 3 in one direction (arrow A in FIG. 5) by means of a pole chain 4.
When the blade rotates in the direction shown in ), the rotation of the gear 50 is transmitted through the switching clutch device, and the vane opening/closing shaft 1 integrally connected to the gear 5 is rotated to sequentially feed out the vanes. A gear 6 is loosely fitted onto the blade opening/closing shaft of the insulator, and an idling washer mechanism 8 is provided between the gear 6 and a boss 7 fixed on the blade opening/closing shaft. Sometimes the idling Watsunoya mechanism 8 is idling, and no rotation is transmitted to the gear 6.

After stopping the vane at the desired position, the operating wheel 3 is moved by operating the pole chain 4 (after closing the blind).
When rotated in the opposite direction (direction shown by arrow B in Figure 5),
After the switching clutch device is switched, this rotation is transmitted to the gear 9 to rotate the vane rotation shaft 2.

As a result of this, the gear 10 integrated with the gear 9 rotates and rotates the moving gear 11 that meshes with the gear 9. As a result, the moving gear 11 rotates and moves on the screw shaft 12, and the blade 9
When the blade rotation shaft 2 rotates by an angle corresponding to 0 degree rotation, the moving gear 11 reaches the end of its movement stroke (the right end in FIG. 1) and stops rotating the blade rotation shaft.

In this state, the operating wheel 3 cannot rotate in the same direction any more and the vane plate stops at a position ζ parallel to the opening/closing direction.

If you want to rotate the vane to a desired angle, rotate the operating wheel 3 again in the direction A using the pole chain.
The gears 9 and 10 rotate in opposite directions, and together with this, the vane rotating shaft 2 is rotated in the opposite direction to rotate the vane in the opposite direction and bring it to a desired angle.

To further rotate the vane, when the actuating wheel 3 is further rotated in the direction A, when the transfer gear 11 reaches the end of its travel stroke (the left end shown in FIG. 1), the rotation of the vane rotation axis is stopped. Stop.

Next, when the operating wheel 3 is rotated again in the direction B, the switching clutch device is switched again, and the gear 5 is rotated again.

However, in this case, gear 5 rotates in the opposite direction,
Put back the vanes (open the blinds).

At the same time, the pawl of the idle washer 8 engages and rotates the gear 6, which in turn rotates the moving gear 11, thereby rotating the vane rotating shaft 2 and rotating the vane by 90 degrees with respect to the opening and closing direction of the vane.
It comes to the angular position of degrees.

When the vane reaches this angular position O, the moving gear 11 shifts to the gear 6.
After that, the blade is moved only by the rotation of the operating wheel, and when opening the blind and then closing the blind, the operating wheel must be rotated again in the direction B. Therefore, the switching clutch device is switched, and the same operation as described above is started.

The switching clutch device of the present invention achieves the above switching action, and includes a first clutch wheel 14 integrally formed in the center of a clutch shaft 13, and a first clutch wheel 14 on one side of the clutch wheel 14 on the clutch shaft 13. While the operating wheel 3 is loosely fitted, the second clutch wheel 15 is loosely fitted on the other side,
A spring 16 is provided that always elastically presses these, and a plurality of clutch pawls are formed on the contact surface between the operating wheel 3 and the first clutch wheel 14 to transmit only one direction of rotation (direction B) of the operating wheel. In addition, the same number of clutch pawls are formed on the contact surfaces of the first clutch wheel and the second clutch wheel to transmit only the rotation in the opposite direction (direction A) of the first clutch wheel to the second clutch wheel, and the operating wheel is rotated in the direction B. A clutch frame 18 is installed inside the malfunctioning wheel 3 so that when the clutch rotates in the direction, the second clutch wheel pawl and the first clutch wheel pawl are switched by one pawl.
A groove (not shown) is formed in which the clutch frame 18 can move backward, and a groove 191 provided on the inner surface of the clutch frame 18 is engaged with the protrusion 20 of the second clutch wheel 15. together with the second clutch wheel 15.
A drum 21 is formed on the clutch frame 18 and extends concentrically with the clutch shaft 13.
A pair of gears 22 and 23 are placed on this drum 21 in a ring 24.
Rotation stoppers 25 and 26 are loosely fitted in parallel with each other through the gears, and rotary stoppers 25 and 26 are disposed on the wall of the drum 21 at positions corresponding to these gears so as to be freely removable and removable. When the clutch frame 18 is in a position where it is rotated in the direction A by the operating wheel 3, one of the rotation stoppers 25 is projected to fix one gear 22 on the drum 21, and the clutch frame 18 is rotated. The other gear 23 is fixed on the drum 21 when it is in the position where it is rotated in the B direction ζ by the operating wheel 3.

As mentioned above, in order to switch gears 22 and 23, in the illustrated embodiment, clutch shaft 13 is formed to have a triangular cross section, and six clutch pawls are formed on clutch wheels 14 and 15 and operating wheel 3. , the clutch frame 18 is assembled so that it can be displaced by 60 degrees with respect to the operating wheel 3.

Although only one rotary stopper 25, 26 is shown in the drawing, in the illustrated embodiment, three rotary stoppers 25 and 26 are provided so as to correspond to the triangular cross section of the clutch shaft.
and three stops 26 are arranged at intervals of 120 degrees, and the stops 25 and 26 are arranged with a difference of 60 degrees.

In the figure, 27 indicates a friction suppressing device that prevents the clutch frame 18 from moving idly during blind operation, and 32 indicates gears 22, 2.
2B shows the snap ring that fixes 2B to the drum 21.
, 29 and 30 are holding frames that hold the above-mentioned mechanism, and 31 is a connecting rod that assembles these together.

In the above device, first, when the clutch frame 18 is in a position where it is rotated in the direction A by the operating wheel 3, the end of the groove on the inner surface of the operating wheel 3 (not shown) hits the protrusion 17 of the clutch frame 18 and the clutch frame 18 is activated. The clutch frame 18 is rotated by rotating the wheel 3.

In this case, the corner of the triangular cross section of the clutch shaft 3 protrudes the stopper 25 and engages the inner surface ζ stopper 25 of the gear 22, thereby fixing the gear 22 on the drum 21.
Since the stopper 26 is located on a triangular flat surface, it is in a retracted position, leaving the gear 23 free.

When the operating wheel 3 is rotated in the direction A in this state, the gear 22 is rotated, and the gear 5 that meshes with the gear 22 is rotated, and the blades are sent out one after another as described above, and the blind is closed.

Next, when the operating wheel is rotated in direction B, the operating wheel 3 is rotated 60 degrees relative to the clutch frame 1B4, and the other end (not shown) of the groove formed on the inner surface of the operating wheel 3 is connected to the clutch frame. The actuating wheel 3 and the clutch frame 18 come to a position where they are rotated in the B direction by contacting the protrusion 17.

At this time, the first clutch wheel 14 is rotated by 60 degrees due to the engagement of the clutch pawl between the operating wheel and the first clutch wheel, and the clutch shaft 13 is also rotated by 60 degrees. The triangular corner portion of the triangle protrudes the stopper 26 to fix the gear 23, and the stopper 25 is retracted to freely rub the gear 22.

After the gears 22 and 23 have been switched in this manner, the operating wheel 3 is rotated, so that the gear 23 rotates the gears 9 and 10 that mesh with it, and as described above, the gear 23 rotates the gears 9 and 10 that mesh with it.
Performs a 0 degree rotation.

Next, when the operating wheel 3 is rotated in the direction A, the operating wheel 3 rotates 60 degrees without rotating the first clutch wheel 14. Since the relative positions do not change, no switching of gears 22,23 takes place.

The subsequent rotation of the operating wheel 3 rotates the gear 23 in the opposite direction, and as described above, 18 in the opposite direction of the blade rotation axis 2
Produces a 0 degree rotation.

Next, when the operating wheel 3 is rotated in the direction B, the switching action of the gears 22 and 23 occurs in the same manner as described above, and the gear 22 rotates the gear 5 in the opposite direction Q. Watsuya mechanism 8 set to engage with the opening/closing shaft
, the gear 6 is rotated to cause the blade rotating shaft to rotate 90 degrees, and the blade opening/closing shaft is also rotated to position the blade at 90 degrees, and the blade is returned to open the blind.

As mentioned above, the device according to the invention can be used in directions A, B of the working wheel.
The rotation of the two shafts can be controlled by sequentially switching the rotation transmitted by a pair of gears connected thereto and the direction of rotation accordingly. The most appropriate movement can be obtained by controlling the rotation of the blind blade opening/closing axis and the blade rotating axis.

[Brief explanation of drawings]

FIG. 1 is an axial sectional view of the device of the present invention, and FIG.
A cross-sectional view taken along the line ■-■ in the figure, Figure 3 is lll of Figure 1.
The sectional view taken along line -1, FIG. 4, is IV-IV in FIG.
FIG. 5, a sectional view taken along line O, is a perspective view of the device of the present invention. DESCRIPTION OF SYMBOLS 1... Vane opening/closing shaft, 2... Vane rotating shaft, 3... Operating wheel, 4... Pole chain, 5... Gear,
6... Gear, 7... Boss, 8... Idle washer mechanism, 9... Gear, 10... Gear, 11... Moving gear, 12... Screw shaft, 13... Clutch shaft, 14・
...First clutch wheel, 15...Second clutch wheel, 16...Spring, 17...Protrusion,
18...Clutch frame, 19...Groove, 20...Protrusion, 21...Drum, 22, 23...Gear, 24...
...Ring, 25, 26...Rotation stopper, 27...
Friction suppressing device, 28, 29, 30...holding frame, 3
1...Connecting rod, 32...Snap ring. ;1 5[

Claims (1)

[Claims] 1 The first
A clutch wheel is integrally formed, and an operating wheel is loosely fitted on one side of the clutch wheel on the clutch shaft, and a second clutch wheel is loosely fitted on the other side, so that they are always pressed elastically. A spring is provided, a plurality of clutch pawls are formed on the contact surface between the operating wheel and the first clutch wheel, and the clutch pawls transmitting only one direction of rotation of the operating wheel to the first clutch wheel; The same number of clutch pawls are formed on the contact surfaces of the clutch wheels for transmitting only the rotation of the first clutch wheel in the opposite direction to the second clutch wheel, and the clutch pawls can be displaced relative to the working wheel by one of the pawls. A groove portion into which a protrusion provided on the clutch frame is inserted is provided inside the actuating wheel, and this clutch frame and the second clutch wheel are engaged so as to rotate together, and the clutch frame has the above-mentioned clutch shaft and A drum extending concentrically is integrally formed, a pair of gears are loosely fitted in parallel on this drum, and rotary stops are disposed on the wall of the drum at positions corresponding to these gears so as to be able to move in and out. A switching clutch device characterized in that the rotation stopper is moved in and out by a clutch shaft.