JPH072129B2 - Curtain opening and closing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a curtain opening / closing device for winding or rewinding a curtain for opening and closing.

(B) Conventional Technology Conventionally, the above-mentioned curtain opening / closing device has a drive device for driving the rotating shaft forward and backward at the shaft end of the rotating shaft for winding and rewinding the curtain installed on the upper part of the window frame. It is connected.

However, in the above-mentioned configuration, since the curtain having the width corresponding to the length of the rotating shaft is usually stretched, when the curtain is stretched over the entire window frame, the drive device projects laterally from the window frame to drive the drive device. However, there is a problem that it is necessary to design in consideration of the installation space.

Moreover, since the drive device protrudes, it is necessary to conceal the design. In addition, if the side of the window frame is close to the pillars, the window frame, etc., and the drive device installation space cannot be secured, the window frame width Since the mounting position of the drive device is regulated inside, the tension width of the curtain becomes shorter than the window frame width, and the curtain cannot be stretched over the entire window frame.

(C) Problem to be Solved by the Invention According to the present invention, a drive device is mounted inside a shaft end on a rotary shaft, so that the drive device is arranged within a window frame width range.
An object of the present invention is to provide a curtain opening / closing device in which a curtain can be stretched over the entire window frame, and moreover, a drive device can be easily attached to a rotation shaft.

(D) Means for Solving the Problem In the present invention, a rotary shaft formed as a square shaft is installed on the upper part of a window frame, and is wound on the rotary shaft by forward and reverse rotation of the rotary shaft. A plurality of winding drums for winding and rewinding the curtain lifting cord are mounted, and a power source, a speed reduction unit, and a drive unit are integrated to drive the rotary shaft in the forward and reverse directions. A curtain opening / closing device including a drive device, wherein a square hole is formed in a central portion of a final stage output ring that outputs a driving force of the drive device so as to correspond to the angular axis shape of the rotating shaft. The curtain opening / closing device is characterized in that the rotary shaft is inserted into the rotary shaft so that the rotation can be transmitted, and the drive device is mounted inside the shaft end on the rotary shaft.

(E) Effect of the Invention According to the present invention, since the drive device is mounted on the rotary shaft set to the same length as the window frame width, the drive device is projected outside the rotary shaft set to the required length. Instead, the drive device can be arranged within the length of the drive shaft, it is not necessary to consider the installation space of the drive device, and the space above the window frame can be compactly mounted.

Moreover, since the mounting position of the drive device is not restricted by the width of the window frame, the curtain can be stretched over the entire window frame, and the winding drum can be mounted up to the shaft end of the rotating shaft. The weight load of the can be evenly distributed over the entire axis without being concentrated on a part of the axis of rotation, which allows the curtain to move up and down smoothly, and when the curtain is rolled up, it is driven inside the curtain. The device can be hidden and it does not spoil the beauty.

Further, the drive device can be mounted on the rotary shaft of the square shaft by inserting the square hole formed in the output ring at the output end of the drive device unitized into the rotary shaft. It can be easily mounted on the rotation axis (intermediate position), and further, for driving force transmission, for example,
Adjustment work such as adjustment of the meshing position of the input / output gear is unnecessary, and the mounting / assembling work of the drive device becomes simple and easy.

(F) Embodiment of the Invention One embodiment of the present invention will be described in detail below with reference to the drawings.

The drawing shows, as an example, a curtain opening / closing device for opening and closing the curtain. In FIG. 1, the curtain opening / closing device 1 is installed on an upper portion of a window frame (not shown), for example, a pivot formed on a square axis such as a square. The shaft 2, a plurality of take-up drums 3 slidably mounted on the rotating shaft 2, and the inside of the shaft end on the rotating shaft 2 described above. A drive device 4 for reverse driving, and a curtain lifting cord 5 wound around each winding drum 3.
The curtain 6 has its lower end fixed to the lower end and the upper end fixed to the upper part of the window frame.

The rotating shaft 2 has the rail 7 fixed to the upper part of the window frame with bolts and nuts (not shown), and the drive device 4 and each winding drum 3 ... The rotary shaft 2 is erected above the window frame by fixing.

As shown in FIG. 2, the drive device 4 described above includes a drive motor 9 that is rotated in the forward and reverse directions by operating the open / close switch 8.
And a reduction unit 10 for reducing the rotation of the drive motor 9 to a predetermined rotation speed, and a drive unit 11 for transmitting the rotation output from the reduction unit 10 to the rotary shaft 2.

The above-mentioned drive motor 9, speed reduction unit 10, drive unit 11
Is a pair of L-shaped mounting plates with the upper part bent.
It is fixed to 2,12 with bolts 13 and nuts 14.

In addition, the pair of mounting plates 12 and 12 has locking projections 12a and 12a formed by bending a part of the upper plate side upward, and inserting the locking protrusions 12a and 12a into a guide groove 7a formed in the longitudinal direction of the lower surface of the rail 7. 7
The upper plate side is fixed to a locking tool 15 locked inside by a fixing screw 16, and the position is adjustable on the rail 7.

As shown in FIG. 1, a power cord 17 is connected to the drive motor 9 through an open / close switch 8, and the speed reduction unit 10 internally has large and small gears (not shown) necessary for speed reduction. ) Are stored.

The deceleration unit 10 decelerates the rotation output from the drive motor 9 to a predetermined speed and outputs the decelerated rotation to the output shaft 18, and from the large-diameter gear 19 fixed on the output shaft 18, the drive unit 11 described later is used. The rotary shaft 2 is rotationally driven via.

A small diameter gear 20 is fixed to the shaft end portion on the output shaft 18, and the output of the small diameter gear 20 is input to a stop position setting device 24 described later.

As shown in FIG. 2, FIG. 3, and FIG. 4, the drive unit 11 described above is installed inside the case 22 fixed to the mounting plates 12 and 12 with screws 21 ... When the drive motor 9 rotates. The lock mechanism 23 that transmits the rotation from the radial gear 19 to the rotating shaft 2 and prevents the curtain 6 from falling due to its own weight when the drive motor 9 is stopped, and drives the upper limit stop position and the lower limit stop position of the curtain 6. A stop position setting device 24, which is set by stopping the motor 9, is housed.

The lock mechanism 23 described above locks the input gear 25 meshed with the large-diameter gear 19 of the reduction gear unit 10, the lock ring 26 facing one side surface of the input gear 25, the output ring 27, and the rotation from the input gear 25. The lock spring 28 allows the rotation and locks the rotation from the rotating shaft 2.

As shown in FIG. 3, the above-mentioned input gear 25 is formed with an arc-shaped projecting portion 25a on the surface facing the inside of the lock ring 26, while the output ring 27 side facing the projecting portion 25a is formed. While being formed in an arc shape, the lock ring 26 is loosely fitted to the outer peripheral surface of the cylindrical portion formed by the protruding portion 25a of the input gear 25 and the output ring 27, and further, the lock spring 28 is protruded from the input gear 25. The outer peripheral surface of the portion 25a, the outer peripheral surface of the output ring 27, and the inner peripheral surface of the lock ring 26 are mounted in a gap formed by facing each other.

The input gear 25 described above is a cylindrical bearing fixed to the mounting plate 12.
A pivot shaft 2 is rotatably supported on the bearing 29, and the pivot shaft 2 is rotatably inserted through the center of the bearing 29.

The aforementioned lock ring 26 is fitted and fixed inside the case 22,
A lock spring 28 is fitted inside.

The above-mentioned lock spring 28 is expanded and urged in a direction in which the lock spring 28 is always in contact with the inner peripheral surface, and the friction resistance caused by this contact causes the lock spring
28 Locks the rotation in the expanding direction of itself.

In addition, the lock spring 28 has a bent portion 28a,
28a is made to face between the protruding portion 25a of the input gear 25 and the output ring 27.

The protruding portion 25a of the input gear 25 and the output ring 27 are opposed to each other at an interval allowing a slight rotation.

The above-mentioned output ring 27 is inserted into a square hole 27a formed at a center portion thereof to be slightly larger than the rotary shaft 2 so that the rotary shaft 2 can be rotationally transmitted.

Further, since the square hole 27a is formed to be slightly larger than the rotary shaft 2, sliding of the rotary shaft 2 in the axial direction is allowed.

When the input gear 25 rotates, the above-described operation of the lock mechanism 23 causes the protrusion 25a to rotate the bent portions 28a and 28a of the lock spring 28 in the direction in which the lock spring 28 is contracted. The pressure contact is loosened and can be rotated,
At the same time, the protruding portion 25a rotates the output ring 27 via the bent portions 28a, 28a of the lock spring 28 to rotate the rotating shaft 2.

On the other hand, when the input gear 25 is stopped, the rotating shaft 2 rotates due to the descent of the curtain 6 due to its own weight. This rotation causes the output ring 27 to slightly rotate to expand the lock spring 28, and 28 presses against the inner peripheral surface of the lock ring 26 to lock the rotation and prevent the curtain 6 from falling.

As shown in FIGS. 2 and 4, the stop position setting device 24 described above includes an upper limit setting counter 30 for setting the winding position of the curtain 6 and a lower limit setting counter 31 for setting the lowering position.
And a pair of limit switches 32, 32 disposed above the counters 30, 31.

The upper limit setting counter 30 and the lower limit setting counter 31 described above
Have the same structure, one of the upper limit setting counters 30
Will be described.

As shown in FIG. 5 and FIG. 6, the upper limit setting counter 30 described above has a gear 33 meshed with the small diameter gear 20 of the output shaft 18, and three counting wheels 34 ... Shift 3
Each shift gear 35, the above-mentioned gear 33, each counting wheel 34 ,,
It comprises a holder 36 which holds each shift gear 35.

The gear 33 and each counting wheel 34 ... Are rotatably supported on a support shaft 37 that is supported by a holder 36.

An input gear 38 for inputting rotation to each shift gear 35 ... Is integrally fixed to the side of the gear 33.
Engages with a first-stage shift gear 35 described later.

Further, between the adjoining counting wheels 34, the respective gear feed gears 35-supported on the swing shaft 39 are brought into mesh with the counting wheels 34.

Each of the above-mentioned shift feed gears 35 is pivotally supported on a swing shaft 39 that is provided in parallel with the support shaft 37, and both ends of the swing shaft 39 are supported by a swing holder 40. .

Further, the swing shaft 39 has one end extended to the side of the swing holder 40,
Furthermore, an arc-shaped long groove 36a formed at one end of the holder 36
Is inserted into.

The above-described swing holder 40 pivotally supports the holder 36 on the proximal end side by a shaft 41, and a bias spring 42 is wound around the shaft end of the shaft 41 to count the swing shaft 39. The wheel 34 is always urged to the side.

The operation of the upper limit setting counter 30 transmits the rotation of the drive shaft 18 from the small diameter gear 20 to the gear 33 of the upper limit setting counter 30, and further transmits this rotation from the input gear 38 to the first shift gear 35, By sequentially repeating this, each counting wheel 34 ... Is shifted, and the winding amount of the curtain 6 is displayed by the rotation amount of each counting wheel 34.

A return mechanism 43 for returning the counting state to the initial state is provided in each of the counting wheels 34 ... And each of the shift gears 35. The return mechanism 43 described above is provided with a return lever formed in the swing holder 40.
A heart-shaped cam 34a formed by forming 40a on each counting wheel 34 ...
Abut the peripheral surface of the cam, and the cams 34a ... Are rotated by this contact.

Then, the return lever 40a is brought into contact with the straight portion of the cam 34a,
The counting state is returned so that the rotating position of each counting wheel 34 ... Is set to "000".

On the other hand, each shift feed gear 35 is formed with an angular shaft portion 35a, and when the rocking holder 40 is rocked, a flat surface portion of the angular shaft portion 35a is formed on the angular shaft portion 35a. A pair of leaf springs 44 are provided so as to abut against the gear feed gears 35 to keep the rotational positions of the gear feed gears 35 in mesh with the counting wheels 34.

The above-mentioned leaf spring 44 has its end faced between the swing holder 40 and each of the girder feed gears 35 ...
The base end is fixed to the holder 36.

The above-mentioned operation of the return mechanism 43 is performed by sliding the setting button 45 attached to the side surface of the holder 36. The setting button 45 described above is used for the holder 36 as shown in FIG.
A biasing spring that slides along the side by guide protrusions 36b, 36b formed on the side of the
At 47, he always pushes downward.

Further, the setting button 45 is formed with a guide groove 45a through which one end of the swing shaft 39 is inserted, and the guide groove 45a is the setting button 45a.
The swing shaft 39 is formed so as to swing with respect to the sliding direction of 45.

The setting button 45 is operated by sliding the swing shaft 39.
By swinging the counting wheels 34 away from the respective shift gears 35. At the same time, the return levers 40a of the swing holder 40 move the counting wheels 34.
"000" is set, and further, each shift gear 35 is held by the leaf spring 44 in an aligned state capable of meshing with each counting wheel 34.

The maximum upper digit counting wheel 34 is provided with a switch lever 48 for switching the limit switch 32. The switch lever 48 has its base end pivotally attached to the holder 36 by a shaft 49, and A rotary cam 50 is pivotally supported at a position facing the peripheral surface of the counting wheel 34 of the switch lever 48.

Further, the switch lever 48 is continuously provided with an operating rod 48a having a length that comes into contact with the base end portion of the swing holder 40 at the free end portion.

The rotating cam 50 described above has the concave portion 34 formed on the peripheral surface of the counting wheel 34.
The end is locked to b, and the rotating cam 50 is usually
It is in sliding contact with the peripheral surface of the counting wheel 34 by 1, and the limit lever 32 is held in the ON state by the switch lever 48 during this sliding contact.

Further, when each counting wheel 34 ... Is in the "000" position, it engages with the concave portion 34b of the counting wheel 34 of the uppermost digit, the switch lever 48 descends, the limit switch 32 is turned off, and the drive motor 9 is stopped. To do.

That is, the "000" setting position where the drive motor 9 is stopped is the upper limit stop position or the descent stop position of the curtain 6.

The switch lever 48 is urged toward the counting wheel 34 by the restoring force of the limit switch 32 provided on the upper surface of the free end portion.

The pair of limit switches 32, 32 described above are fixed above the upper limit setting counter 30 and the lower limit setting counter 31, and each limit switch 32, 32 has a connection cord 32a, 32a connected to the open / close switch 8. Each is connected.

The winding drum 3 described above is wound around the winding drum 3 having the rotary shaft 2 inserted through the center thereof, the drum case 52 with the winding drum 3 axially supported therein, and the lower portion of the drum case 52. It is composed of a guide roller 53 axially supported in parallel with the drum 3.

The above-mentioned winding drum 3 has the rotating shaft 2 slidably inserted in the central portion thereof and is inserted in a state in which the rotation of the rotating shaft 2 can be transmitted.

A curtain lifting cord 5 having a lower end fixed to the lower end of the curtain 6 is wound around the winding drum 3 by a predetermined length required for lifting the curtain 6.

The drum case 52 is fixed on the rail 7 in a positionally adjustable manner by the locking tool 54 and the fixing screw 55 as in the driving device 4 described above.

Further, the drum case 52 is formed with an opening 52a for inserting the curtain raising / lowering cord 5 on one side of the lower portion.

In the curtain 6, the upper end is fixed to the side surface of the rail 7 fixed to the upper part of the window frame with the velcro tape 56, and the lower end is fixed to the lower end of the curtain lifting cord 5.

The operation of the curtain opening / closing device 1 thus configured will be described.

When setting the upper limit stop position of the curtain 6, first, the OPEN button of the open / close switch 8 is pressed to lock it in the ON state, and then the setting button 45 of the upper limit setting counter 30 is slid to operate to shift each shift gear 35 ... At the same time as setting each counting wheel 34 ... to "000" by swinging, the base end of the swinging holder 40 contacts the operating rod 48a, pushes up the switch lever 48 and turns on the limit switch 32 to turn on the drive motor 9. To drive.

Then, from the drive motor 9 to the speed reduction unit 10 and the drive unit
The rotating shaft 2 is rotated in the winding direction via 11.

At this time, the lock spring 28 of the lock mechanism 23 is rotated in the direction in which the lock is loosened by the projection 25a of the input gear, so that the rotation shaft 2 can be rotated.

At the same time, the rotating shaft 2 rotates the winding drum 3 to wind the curtain lifting cord 5 and wind the curtain 6.

Then, the pressing of the setting button 45 is released at a predetermined position, and the respective shift gears 35 ... Are faced between the counting wheels 34.

At the same time, the rotary cam 50 of the switch lever 48 is set in the recess of the counting wheel 33.
34b is engaged, the limit switch 32 is turned off, the drive motor 9 is stopped, and the upper limit stop position of the curtain 6 is set.

Next, when the lower limit stop position of the curtain 6 is set, the CLOSE button of the open / close switch 8 is pressed to lock it in the ON state as in the above-described operation, and then the setting button 45 of the lower limit setting counter 31 is pressed. Then, the limit switch 32 is turned on to drive the drive motor 9.

Then, the rotating shaft 2 is rotated in the rewinding direction by the driving force of the drive motor 9.

At the same time, the curtain lifting cord 5 is unwound to unfold the curtain 6, and the pressing of the setting button 45 is released at a predetermined position to turn off the limit switch 32 and drive motor 9
And the lower limit stop position of the curtain 6 is set.

To unlock the button of the open / close switch 8, press the STOP button.

Next, when it is desired to open the curtain 6, the OPEN button of the open / close switch 8 is pressed to turn on the circuit, and the drive motor 9 is driven to rotate the rotary shaft 2 in the rewinding direction, whereby the curtain 6 is expanded. To be done.

The curtain 6 is stopped at a predetermined stop position by the switch operation of the lower limit setting counter 31.

Further, when the curtain 6 tries to descend by its own weight at the stop position, the rotating shaft 2 rotates the bending portion 28a in the direction of expanding the lock spring 28 by the output ring 27 of the lock mechanism 23, so that the rotating shaft 2 rotates. Is locked and the stop position of the curtain 6 is fixed.

Next, when you want to close the curtain 6, press the CLOSE button of the open / close switch 8 to turn on the circuit,
By driving the drive motor 9 to rotate the rotary shaft 2 in the winding direction, the curtain 6 is wound up.

Then, the curtain 6 is stopped at a predetermined stop position by operating the switch of the lower limit setting counter 31.

Further, the curtain 6 is fixed at a predetermined position by the lock mechanism 23.

Moreover, in this embodiment, the inside of the shaft end on the rotary shaft 2 that is installed over the window frame and has the same length as the window frame width, that is,
Since the drive device 4 is mounted on the axis of the rotating shaft 2, the drive device 4 does not project outside the window frame, and the entire curtain opening / closing device 1 can be compactly mounted in the space above the window frame. In addition, since the drive device 4 is always hidden by the curtain 6, it does not spoil the appearance.

Further, since the width of the window frame and the length of the rotating shaft are set to be the same, the curtain can be stretched over the entire window frame.

In this embodiment, the drive device 4 is driven by the forward and reverse rotations of the drive motor 9 to open and close the curtain 6, but a drive means for driving by manual operation such as an operating rope is provided. Good.

[Brief description of drawings]

 The drawings show an embodiment of the present invention, FIG. 1 is an overall perspective view of a curtain opening / closing device, FIG. 2 is an enlarged cross-sectional view of a drive device, and FIG. 4 is a front view of the counter, and FIG. 6 is a partially cutaway side view of the counter. DESCRIPTION OF SYMBOLS 1 ... Curtain opening / closing device, 2 ... Rotating shaft 3 ... Winding drum, 4 ... Driving device 5 ... Curtain lifting cord, 27 ... Output ring 27a ... Square hole

Claims (1)

[Claims] 1. A winding shaft formed as a square shaft is installed on the upper part of a window frame, and a lifting / lowering cord for a curtain wound around the rotating shaft by forward / reverse rotation of the rotating shaft is wound up and wound. A curtain opening / closing device equipped with a drive device in which a plurality of take-up drums for returning are mounted and in order to drive the rotary shaft in the forward and reverse directions, a power source, a speed reduction unit, and a drive unit are integrated. Then, a square hole is formed in the center of the final stage output ring that outputs the driving force of the drive device so as to correspond to the angular axis shape of the rotary shaft, and the rotary shaft is rotationally transmitted to the square hole. A curtain opening / closing device in which the drive device is mounted inside the shaft end on the rotary shaft so that the drive device is inserted as much as possible.