KR20190124998A - Drive device for blinds driven lines form a single line - Google Patents

Abstract

The present invention relates to a drive device for a blind and, more specifically, relates to a drive device for a blind with a driven line formed in a single line, which enables a blind to be conveniently used and prevents a negligent accident in advance. According to the present invention, the drive device for a blind enables a rotation drum (3) in which conventional blind paper (70) is wound to be rotated, and comprises: a main shaft (10); a drive unit housing (20); a drive clutch (30); a drive disk (40); a drive drum (50); and a rotation control device.

Description

Drive device for blinds driven lines form a single line

The present invention relates to a drive device for a blind, and more particularly, by using a drive string formed in one line of the rotary drum wound the blind paper to be rotated forward and backward, the use of the blind is convenient and prevent accidents in advance. It relates to a drive device for the blind is formed in one line to drive.

In general, blinds are used to control the external light coming into the room from home, office, hotel, etc. and to protect the privacy of the interior.In general, the blinds have different materials and shapes, such as curtains, verticals, and roll screens. There are kinds of blinds.

The blind is installed on the upper side of the window frame and the fixed frame is provided with a rotation support on both sides, the rotary drive unit is provided on one rotation support of the fixed frame to enable the rotation drive by the track-type drive line, Both ends are rotatably connected between the rotary drive unit and the other rotary supporter, and the rotary drum is configured to wind blind paper on its outer circumferential surface.

When the conventional blinds are pulled and rotated by the raceway drive line, the rotary drive unit is rotated while the rotating drum is rotated together. At this time, the blind paper wound on the rotating drum is released and unfolded downward, and a predetermined load is applied to the lower portion of the blind paper unfolded downward. A weight having a weight is formed so that the blind paper is spread straight down.

Rotating the drive cord reversely causes the blind paper to be unwound from the rotating drum, and the blind paper is wound around the rotating drum.

Such a conventional blind is provided with a long track-shaped drive line installed on one side, so that a child who was playing by the window while his parents were carelessly could be wound or caught in the track-driven drive line by mistake or mischief in the house. Safety accidents such as back often occur, which is a big social problem.

KR Patent Publication 10-2016-0095007

An object of the present invention is to solve the above problems, first, when the driving line is formed to continue to pull the drive line formed in one row so that the blind drive is wound on the rotating drum, when the drive line is released, the drive line is in the original state It is possible to return shortly, and to pull the drive string a little and release it so that the blind paper is extended or stopped under its own weight, making the blind easier to use. The present invention provides a blind drive device having a single row of drive lines formed by a single row to prevent a neck and the like from being wound.

In order to realize the above object, the present invention is to enable the rotation drive of the rotary drum wound around the conventional blind, the shaft is the tip end portion is fixed to the side support of the fixed frame, the coupling portion is formed on the outer peripheral surface of the front end of the shaft A main shaft formed at the rear end of the coupling part in a concentric shape, and having a fixed part formed at an axis having a face at the rear end of the rotating part; The hub of the front side is coupled to the coupling portion of the main shaft to form a driving space and the opening portion is formed at the lower end, the drum-shaped rotary shaft is provided to protrude rearward in the center of the rear coupled to the opposite drive space, A drive unit housing having a first coil spring mounted therein and having an interlocking clutch rotating together in only one direction on an inner circumferential surface of the front end of the first coil spring; The central hub portion is rotatably mounted to the rotational part of the main shaft in the drive space of the drive housing, and is rotatably connected to the interlocking clutch, and the spring is rotated in the circumferential direction and rotated again in the opposite direction by rotating A clutch; A drive disc detachably mounted to the central hub, the drive disc being connected to transmit a rotational drive force in only one direction, and a drive disc wound around the outer circumferential surface; It is formed in a drum shape so that the outer circumferential surface of the drum is fitted to the inner circumferential surface of the rotating drum, and the inner drum protrudes from the rear end portion of the drum at intervals from the inner circumferential surface of the drum. A drive drum which is rotatably fitted and whose outer circumferential surface of the inner drum is inserted into the inner circumferential surface of the first coil spring in the drum-shaped rotation shaft so as to be interlocked with the first coil spring; A fixed shaft is provided in the inner drum of the driving drum to be fixed to the fixed portion of the main shaft, and the second coil spring is hermetically inserted to allow only one direction rotation to the outer peripheral surface of the rear end of the fixed shaft, and one end of the second coil spring is fixed. A screw drum connected to one end and having a screw-shaped track groove formed on the outer circumference and a circumferential groove formed along the circumference at the end of the track groove is rotatably fitted to the outer circumferential surface of the fixed shaft and provided to move along the axial direction of the inner drum. The ball is mounted between the track grooves, characterized in that consisting of a rotation control device for applying or locking the rotation of the internal drive drum according to the position of the steel ball.

In the present invention, the drive line is formed in one line, the pulling line is pulled by the blind paper is rolled on the rotating drum, when the drive line is pulled and released, the drive line is retracted while the blind stops, or the fall is made by self-weight The blinds are convenient to use, and the drive strings are formed in one line and the outside of the drive strings are formed to wrap with sticks, so that the drive strings are not wound around the neck, thereby preventing safety accidents.

1 is a perspective view showing a blind formed in one row of the drive string of the present invention,
2 is an exploded perspective view of FIG. 1;
3 is an exploded perspective view showing a drive device for a blind of the present invention;
Figure 4 is a rear exploded perspective view showing a drive clutch and a drive disk provided in the drive space of the drive housing of the present invention,
5 is a longitudinal sectional view showing a drive device for a blind of the present invention;
6 is a horizontal cross-sectional view showing a state in which the drive clutch and the drive disk of the drive device for blinds of the present invention are relaxed;
7 is a horizontal cross-sectional view showing a state in which the drive clutch and the drive disk of the drive device for blinds of the present invention are tightened;
8 is a cross-sectional view showing an operating state when the blind paper is wound on a rotating drum in the drive device for a blind of the present invention;
9 is a cross-sectional view showing an operating state when the blind paper is paused in the drive device for a blind of the present invention;
10 is a cross-sectional view showing an operating state when the blind paper is continuously lowered by its own weight in the drive device for blinds of the present invention.
11 is a perspective view showing a main axis of the drive device for a blind of the present invention;
12 is a perspective view showing a drive drum of the drive device for a blind of the present invention;
13 is a front view showing an operating state in which a steel ball is wound or rotated in a reverse direction in a screw drum of a drive device for a blind of the present invention;
14 is a front view showing an operating state in which the steel ball is wound or rotated in a forward direction in a screw drum of the drive device for a blind of the present invention;
15 is a cross-sectional view showing a drive string of the drive device for a blind of the present invention.

1 to 5, the tip end portion is fixed to the inside of the side support (2) of the fixed frame 1, the concave-convex coupling portion (10a) is formed on the outer peripheral surface of the front end of the shaft A main shaft 10 having a rotational portion 10b formed concentrically on the rear end of the coupling portion 10a and having a fixed length 10c formed at an end of the hexagonal cross section at the rear end of the rotational portion 10b; The hub of the front center is coupled to and fixed to the coupling portion 10a of the main shaft 10, and an opening for forming a cylindrical driving space and withdrawing the driving line 41 is formed at a lower end thereof, and is opposite to the driving space. A drum-type rotating shaft 21 is provided to protrude rearward in the center of the rear surface to be coupled, and a first coil spring 22 is mounted inside the drum-shaped rotating shaft 21, and on an inner circumferential surface of the front end of the first coil spring 22. A drive housing 20 having an interlocking clutch 23 rotating together in only one direction; The central hub portion is rotatably mounted to the rotating portion 10b of the main shaft 10 in the inner drive space of the drive housing 20 and is rotatably connected to the interlocking clutch 23, and has a spring in the circumferential direction ( A driving clutch 30 which is rotated in the opposite direction as much as 31 is burnt and rotated; A drive disk 40 that is detachably mounted to the central hub and is connected to transmit rotational driving force only in one direction, and the drive disk 40 formed to wind the drive string 41 on an outer circumferential surface thereof; It is formed in a drum shape so that the outer circumferential surface of the drum is fitted to the inner circumferential surface of the rotary drum 3 to which the blind paper 70 is wound, and the inner drum 51 is provided with a predetermined space from the rear end of the drum to the inner end of the drum. The first coil spring 22 in which the inner circumferential surface of the distal end of the drum is rotatably fitted to the outer circumferential surface of the drum-shaped rotation shaft 21 of the drive unit housing 20, and the outer circumferential surface of the inner drum 51 is inside the drum-shaped rotation shaft 21. A driving drum (50) inserted into an inner circumferential surface thereof so as to be interlocked with the first coil spring (22); A fixed shaft 61 is inserted into and fixed to the fixed portion 10c of the main shaft 10 in the inner drum 51 of the driving drum 50, and only one direction rotation is possible on the outer peripheral surface of the rear end of the fixed shaft 61. The second coil spring 62 is hermetically fitted, and a screw drum 63 having one end connected to one end of the second coil spring 62 and having a raceway of a screw groove formed on an outer circumferential surface thereof has a fixed shaft 61. The steel ball 64 is rotatably fitted to the outer circumferential surface, and the steel ball 64 provided on the inner drum 51 is mounted between the screw grooves of the screw drum 63 so as to drive the inner drum 51 and the drive according to the position of the steel ball 64. It is a basic feature of the technical configuration that the rotation control device for applying or locking the rotation of the drum 50 is made.

According to the present invention configured as described above, the inner circumferential surface of the drive disk 40 and the outer circumferential surface of the drive clutch 30 are engaged when the drive string 41 is pulled to rotate together at the outer circumferential surface of the rotating part 10b of the main shaft 10, and the interlocking clutch ( 23) and the first coil spring 22 is driven by the drive clutch 30, at which time the inner circumferential surface of the first coil spring 22, the inner diameter of which is contracted by rotation, is in close contact with the outer circumferential surface of the inner drum 51 It is rotated together, and the driving drum 50 is integrally rotated in the same direction on the outer peripheral surface of the drum-shaped rotation shaft 21 of the drive housing 20.

In addition, the rotary drum 3 is driven to rotate in the forward direction by the driving drum 50, and the blind paper 70 is wound around the outer circumferential surface of the rotary drum 3, so that the blind paper 70 rises above the window.

On the other hand, when the drive clutch 30 is rotated in the forward direction by pulling the drive string 41, the inner end of the spring spring 31 is wound around the outer peripheral surface of the engaging portion 10a of the main shaft 10 to drive the clutch 30. Increase resilience.

Accordingly, when the pulled drive string 41 is released, the inner circumferential surface of the drive disk 40 and the outer circumferential surface of the drive clutch 30 are relaxed by the reaction force of the spring spring 31 that has been compressed, and thus the drive clutch 30 and the drive disk ( 40 is rotated in the reverse direction so that the leading end of the drive string 41 is again wound on the outer circumferential surface of the drive disk 40.

At this time, the inner circumferential surface of the first coil spring 22 in close contact with the outer circumferential surface of the inner drum 51 is detached from the outer circumferential surface of the inner drum 51 while the first coil spring 22 is retracted. Will fall.

On the other hand, the blind paper (70) wound on the rotary drum (3) is provided with a weight having a predetermined weight at the lower end is a force to rotate in the reverse direction to the rotary drum (3) and the driving drum 50, the rotation control device Controls the reverse drive and its operation is as follows.

The rotation controller has a fixed shaft 61 is fixed by the fixing portion 10c of the main shaft 10, the screw drum 63 is fitted to the outer peripheral surface of the fixed shaft 61 is the second coil spring 62 With this, only the forward direction can be rotated and the rotation is suppressed in the reverse direction. When the inner drum 51 of the driving drum 50 is rotated in the forward direction, a part of the inner drum 51 can be bitten and move only in the axial direction. 64 is moved along the screw groove track, when the moving steel ball 64 is caught by the lower locking jaw (63c) provided during the screw groove track as shown in Figure 8 rotates with the screw drum (63) Will be.

That is, when the driving drum 50 is stopped as shown in FIG. 9, if the steel ball 64 is caught on the upper locking jaw 63d of the screw groove track, the reverse rotation is controlled, so that the rotation with the driving drum 50 is performed. When the drum 3 is at rest and the steel ball 64 is positioned in the circumferential groove 63b out of the upper latching jaw 63d of the screw groove raceway as shown in FIG. 10, the driving drum 50 ) And the rotary drum (3) can be rotated in the reverse direction, the reverse rotation force due to the reverse driving force by the weight, and the blind paper 70 is lowered.

On the other hand, the detailed configuration and connection relationship of the main part of the present invention will be described in detail.

As shown in FIG. 11, the main shaft 10 has a flange formed at the front end of the coupling part 10a, and a fixing groove 10d is formed at the inner end of the main spring 31 to be fixed thereto. A fastening groove 10e is formed so that the support fixing pin 11 provided on the support 2 of the fixing frame 1 is fastened to the fastening groove 10e to be fixed, and the end of the fixing part 10c is fixed. A screw groove to which the fixing screw 12 is coupled is formed.

The spindle 10 is fixed to the front end portion of the side support (2) of the fixing frame (1) by the fixing pin 11, the reduction device (4) for suppressing the blind paper 70 descending speed through the end screw groove To be connected.

The drive housing 20 has a hub formed to fit and engage with the engaging concave and convex portions 10a of the main shaft 10, forms a cylindrical drive space, and is engaged with an outer portion of the front housing, which is open rearward, and an opening of the front housing. A cylindrical drive space is formed, and the rear housing is provided with a drum-shaped rotating shaft 21 protruding in the middle of the rear surface.

The driving unit housing 20 serves as a rotating shaft of the driving drum 50 while the front housing and the rear housing are coupled to form a driving inner space.

In addition, the drum-shaped rotary shaft 21 is protruded to the inner peripheral surface of the rear end to limit the axial movement of the first coil spring 22, the outer peripheral surface is fitted to the inner peripheral surface of the front end of the first coil spring 22 in one direction The interlocking clutch 23, which interlocks and faces each other in the opposite direction, is detachably connected to the connector 24 at the center hub.

In addition, the connector 24 is formed in a cylindrical shape having a predetermined diameter of the inner peripheral surface and the outer peripheral surface of the distal end portion, key grooves are formed on the outer peripheral surface of the rear end, the inner peripheral surface is rotatably fitted to the outer peripheral surface of the rotating part 10b of the main shaft 10, the rear end The additional keyways are fitted to the hub of the interlocking clutch 23 so as to rotate together.

The drive disk 40 is formed with a groove in which the drive string 41 is wound along the outer circumferential surface, and an accommodating portion in which the drive clutch 30 is mounted is formed concentrically in the center of the front surface. The plurality of locking jaws 40a having a gradually narrowing shape are formed at regular circumferential intervals.

The driving clutch 30 is formed to open the receiving portion on the front surface is fixed to the fastening protrusion 30a formed on the outer circumferential surface of the main spring 31 mounted on the receiving portion is fixed to the outer surface, and is connected to the hub in the rear center The protrusion 33 is formed concentrically, and a hole is cut in the protrusion 33 at an angular interval, so that the central hub can rotate on the outer peripheral surface of the cylindrical portion of the connector 24 that is fitted to the rotating portion 10b of the main shaft 10. Is inserted into the central hub inner circumferential surface of the drive disk 40, and the needle-type clutch bearing is inserted between the respective engaging jaws 40a of the drive disk 40 hub and the cutouts of the protrusion 33. 32 is mounted.

The drive clutch 30 is such that the clutch bearings 32 are in contact with the outer circumferential surface of the connector 24 through the holes of the protrusion 33 and at the same time in contact with the engaging jaw 40a of the hub of the drive disk 40. When the 40 is rotated in the forward direction, as shown in FIG. 7, the engaging jaws 40a having the smaller inner diameter press the clutch bearings 32, and the clutch bearing 32 presses the outer peripheral surface of the connector 24. As the frictional force increases, it rotates with the connector 24.

At this time, the spring spring 31 of the driving clutch 30 is wound to increase the resilient resilience in the reverse direction, and when the force driven by the driving disk 40 is removed, the spring force 31 of the spring spring 31 is removed. As the driving clutch 30 and the driving disk 40 are relaxed by the driving clutch 30, the driving clutch 30 is rotated in the reverse direction to be restored to the original position.

As shown in FIG. 12, the inner drum 51 of the driving drum 50 has a locking jaw formed on the inner circumferential surface of the tip thereof to limit the axial movement position of the screw drum 63, and guide the axial direction on the inner circumferential surface. The groove 50a is formed so that the steel ball 64 can be axially moved along the guide groove 50a, and hook holes 50b are formed at both rear ends thereof to move the ends of the fixed shaft 61. Both clips of the fixing plate 65 restricting the fastening are to be fastened to the hook hole 50b.

The fixed shaft 61 has a hexagonal through hole formed at the center thereof, a flange formed at the end thereof, and a second coil spring 62 fitted with the rear end portion of the main shaft 10 through the through hole to be fixed and fitted to the outer peripheral surface of the rear end portion 62. ) Is bent downward so that the rear end of the screw drum 63 is coupled to the rear end of the second coil spring 62.

The screw drum 63 has a rear end inner diameter slightly larger so that the second coil spring 62 is mounted, and a hook groove 63a is formed at the rear end so that the bent end of the second coil spring 62 is hooked. It is fitted to the groove (63a), the screw groove of the screw form is repeated on the outer peripheral surface of the front end to form a track, and the circumferential groove (63b) continuous in the circumference is formed at the end of the double screw groove.

In addition, the track of the screw groove is provided in the form of a double orbit repeated on both sides of the outer circumferential surface on the basis of 180 degrees, as shown in Figure 13, the screw groove on both tracks is a circumference at the top of the outer peripheral surface of the first half of the screw drum 63 There is an entry course that is slowly extended downwardly downward from the groove 63b and then bends forward and downward rapidly, and a lower locking jaw 63c is formed between the end of the entrance course and is rapidly bent forward and upward again. The upper latching jaw (63d) is formed between the grooves in a hurry forward downward again at the end of the end, the end of the groove forming the upper locking jaw (63d) is connected to the circumferential groove (63b) again.

As shown in FIGS. 8 to 10, the screw drum 63 is rotatably mounted in the inner drum 51 of the driving drum 50, and is partially provided in the guide groove 50a of the inner drum 51. The steel ball 64 is inserted into the screw groove forming a double raceway, it is rotated only in one direction according to the position of the steel ball 64 to move in accordance with the rotation of the drive drum (50).

That is, when the steel ball 64 is located in the lower or upper locking jaws 63c and 63d on the raceway of the screw groove, the driving drum 50 rotates together with the screw drum 63 or is stationary together. When the steel ball 64 is located in the circumferential groove 63b formed on the circumference of the tip outside the trajectory of the screw groove, the driving drum 50 can be rotated in the reverse direction by the weight of the blind paper 70. Done.

First, FIG. 8 shows an operating state when the driving drum 50 winds the blind paper 70 in a state where the steel ball 64 is located at the lower latching jaw 63c of the screw groove track, wherein the screw drum ( 63 rotates in the forward direction together with the drive drum 50.

When the drive string 41 is released in this state, as shown in FIG. 9, the reverse driving force acts on the driving drum 50 by the weight of the blind paper 7, and the steel is driven by the reverse driving of the driving drum 50. The ball 64 moves toward the upper locking jaw 63d along the track, and the driving drum 50 is also stopped because the screw drum 63 is not reversely rotated, and the blind 70 is also stopped. do.

In addition, when the driving drum 50 is operated by pulling the drive string 41 slightly in such a state, as shown in FIGS. 10 and 13, the steel ball 64 hanging on the upper locking jaw 63d may have a screw groove. Move away to the circumferential groove 63b, the screw drum 63 remains stationary, and the steel ball 64 and the driving drum 50 are driven back by the self-weight of the blind paper 70 to be rotated in reverse direction. The blind paper 70 is continuously lowered by its own weight.

 In addition, when the driving bar 41 is pulled such that the steel ball 64 is rotated by 180 degrees or more in this operating state, the driving drum 50 is rotated again in the forward direction as shown in FIG. 14, and the steel ball 64 is As shown in Figure 8 enters the track of the screw groove is moved back to the lower locking jaw (63c).

On the other hand, the drive line 41 is formed of a line that can be wound around the outer peripheral surface of the drive disk 40, the lower side of the non-winding is made of a plastic rod to prevent the safety accident in advance, as shown in FIG. As it will be, the drive line 41 is inserted through the rod 41a, the through-hole is formed through the knot at the bottom of the rod 41a to be able to adjust the length of the string.

Here, the upper cap 41b and the lower cap 41c are fitted to the upper and lower portions of the rod 41a.

1: fixed frame 2: support
3: rotating drum 4: reduction gear
10: spindle 10a: concave-convex coupling portion
10b: rotating part 10c: fixing part
10d: fixing groove 10e: fastening groove
11: fixing pin 12: fixing screw
20: drive unit housing 21: drum-type rotating shaft
22: first coil spring 23: interlock clutch
24 connector 30 drive clutch
30a: fastening protrusion 31: spring
32: clutch bearing 33: protrusion
40: drive disk 41: drive line
41a: Rod 41b: Top Cap
41c: lower cap 50: driving drum
50a: guide groove 50b: hook hole
51: internal drum 61: fixed shaft
62: second coil spring 63: screw drum
63a: hook groove 63b: columnar home
63c: lower locking jaw 63d: upper locking jaw
64: steel ball 65: fixed plate
70: blind paper

Claims (7)

In enabling the rotary drum 3 to which the normal blind paper 70 is wound can be driven in rotation,
A shaft on which the tip end portion is fixed to the side support (2) of the fixed frame (1), the engaging portion (10a) is formed on the outer peripheral surface of the distal end of the shaft, the rotating portion (10b) in the rear end of the engaging portion (10a) concentrically A main shaft 10 formed with a fixed portion 10c as an axis having a face at the rear end of the rotating portion 10b;
The hub of the front side is coupled to the coupling portion 10a of the main shaft 10, and a driving space is formed, and an opening is formed at the lower end thereof, and the drum-type rotating shaft 21 is rearward at the rear center coupled to the opposite driving space. It is provided to protrude, the first coil spring 22 is mounted inside the drum-shaped rotary shaft 21, the interlocking clutch 23 which rotates together in only one direction on the inner peripheral surface of the front end of the first coil spring 22 is provided. A driving unit housing 20;
The central hub portion is rotatably mounted to the rotating portion 10b of the main shaft 10 in the driving space of the drive housing 20, and is rotatably connected to the interlocking clutch 23, and has a spring spring 31 in the circumferential direction. Drive clutch 30 which is rotated in the opposite direction as much as rotated;
A drive disk 40 that is detachably mounted to the central hub and is connected to transmit rotational driving force only in one direction, and the drive disk 40 formed to wind the drive string 41 on an outer circumferential surface thereof;
It is formed in a drum shape so that the outer circumferential surface of the drum is fitted to the inner circumferential surface of the rotating drum (3), and the inner drum 51 is protruded at intervals from the rear end of the drum at an interval from the inner circumferential surface of the front end portion, The inner circumferential surface of the distal end portion of the drum is rotatably fitted to the outer circumferential surface of the drum-shaped rotation shaft 21, and the outer circumferential surface of the inner drum 51 is inserted into the inner circumferential surface of the first coil spring 22 inside the drum-shaped rotation shaft 21, thereby providing a first rotation. A driving drum 50 which is interlockable with the coil spring 22;
A fixed shaft 61 is inserted into and fixed to the fixed portion 10c of the main shaft 10 in the inner drum 51 of the driving drum 50, and only one direction rotation is possible on the outer peripheral surface of the rear end of the fixed shaft 61. The second coil spring 62 is hermetically fitted, one end of which is connected to one end of the second coil spring 62 and a screw-shaped track groove is formed on the outer circumferential surface, and a circumferential groove is formed along the circumference at the end of the track groove. The screw drum 63 is rotatably fitted to the outer circumferential surface of the fixed shaft 61, and a steel ball 64 provided to move along the axial direction of the inner drum 51 is mounted between the track grooves so that the steel ball ( 64. The drive device for the blind formed with a single row of drive strings, characterized in that it consists of a rotation control device for applying or locking the rotation of the internal drive drum (50) according to the position of (64).
The method of claim 1,
The main shaft 10 has a drive line for blinds formed with a single row, characterized in that the coupling groove 10d is formed with a fixing groove 10d into which the inner end of the spring 31 of the drive clutch 30 is fixed. Device.
The method of claim 1,
The drive unit housing 20 has an interlocking clutch 23 fitted with an outer circumferential surface to an inner circumferential surface of the front end of the first coil spring 22 mounted inside the drum-shaped rotating shaft 21, and an outer circumferential surface of the rotating part 10b of the main shaft 10. And a front end of the connector 24 in which the front end is rotatably mounted between the inner circumferential surface of the drive clutch 30 and the drive line, characterized in that the drive line is connected to the hub in the center of the interlocking clutch 23 so as to transmit power. Drives for blinds.
The method of claim 1,
The drive disk 40 is formed with a groove in which the drive string 41 is wound along the outer circumferential surface, and an accommodating portion in which the drive clutch 30 is mounted is formed concentrically in the center of the front surface. The driving device for blinds is formed in one row, characterized in that a plurality of engaging jaw (40a) of the gradually narrowing again and again formed in a predetermined circumferential interval.
The method according to claim 1 or 4,
The driving clutch 30 is formed to open the receiving portion on the front surface is fixed to the fastening protrusion 30a is formed on the outer circumferential surface of the main spring 31 mounted on the receiving portion is formed on the outer circumferential surface, and is connected to the hub in the rear center The protrusions 33 are formed concentrically, and holes are cut in the protrusions 33 at an angular interval so that the protrusions 33 are inserted into the central hub inner circumferential surface of the drive disc 40. The drive device for the blind formed with a single row of drive strings, characterized in that the needle-type clutch bearing 32 is mounted between the engaging jaws (40a) and the cutting holes of the protrusions (33).
The method of claim 1,
The inner drum 51 of the driving drum 50 has a guide groove 50a formed along the axial direction on the inner circumferential surface thereof so that the steel ball 64 can be axially moved along the guide groove 50a. The drive device for the blind is formed in one row.
The method of claim 1,
The screw drum 63 is provided with a screw groove in the form of a double orbit repeated on both sides of the outer circumferential surface on a 180 degree basis, and the screw grooves on both tracks are rearward downward from the circumferential groove 63b on the outer circumferential surface of the first half of the screw drum 63. There is an entry course that is gently extended and then bends forward and downward rapidly, and at the end of this entry course, it is bent upwards and again, and a lower locking jaw 63c is formed. The upper driving jaw (63d) is formed, the end of the groove forming the upper locking jaw (63d) is a drive device for the blind line is formed in one row characterized in that the circumferential groove (63b) again.

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