JP2519974B2 - Vertical blind switchgear - Google Patents

Description

TECHNICAL FIELD The present invention relates to an improvement in a vertical blind that operates both opening and closing and rotation of a louver with a single cord.

[Prior Art] Routine of a vertical blind is not opened or closed by a separate opening and closing operation code and rotation operation code,
A device that opens and closes and rotates a louver with only one cord is known from Japanese Patent Laid-Open No. 52-75042.When the device opens and closes the louver along an opening / closing axis, first, the louver is opened in one direction. Rotate the louver parallel to the opening / closing axis, then reverse the louver 180 degrees to make the louver parallel to the opening / closing axis, and then rotate 90 degrees again in the original direction to make the louver orthogonal to the opening / closing axis. Since it was a method of opening and closing the louver, there was a problem that the time required from opening the cord to opening and closing the louver was too long. Therefore, the applicant has proposed a device (Japanese Patent Application No. 62-70193 (Japanese Patent Application Laid-Open No. 63-308179)) that immediately opens and closes the louver when the louver rotates in one direction to the limit of rotation and makes the louver parallel to the opening / closing axis. We proposed and shortened the time from the start of pulling the cord to the opening and closing of the louver.

[Problems to be Solved by the Invention] In the previously proposed device, the louvers move in a state where the louvers are parallel to the opening / closing axis, that is, the left and right louvers have their ends assembled together. At this time, if the material of the louver is relatively hard, the way of overlapping is not reversed at the top and bottom of the louver, but if it is made of a flexible material, the way of stacking at the top and bottom may be reversed. If the top and bottom of the louvers overlap in the opposite manner, the louvers will not rotate smoothly after opening and closing, and the louvers will have different angles.

The present invention has been made to solve this problem, and its object is to move the louver in the opening / closing direction immediately when the louver rotates in one direction and becomes parallel to the opening / closing axis. An object of the present invention is to provide a device in which the orientation of the louver is orthogonal to the opening / closing axis.

[Means for Achieving the Object] In order to achieve the above object, means adopted by the present invention are
As shown in FIG. 1, the head rail 10, a plurality of runners 25 movably provided on the head rail, a spacer 26 for sequentially connecting the runners and restricting the maximum distance between them, and each runner 25. A vertical shaft 29 that is attached so as to be capable of half rotation, a louver 11 that is hung on the vertical shaft and rotates integrally therewith, and two parallel rotating shafts 12 and an opening / closing shaft 13 that extend in the head rail in the longitudinal direction. A drive mechanism provided at one end of the head rail 10 for rotating the rotary shaft 12 and the opening / closing shaft 13, and a gear provided for each runner 25 for rotating the vertical shaft 29 by engaging with the rotary shaft 12. , The top runner 25a and a top 58 (FIG. 2) for engaging with the screw of the opening / closing shaft. When the drive shaft 15 of the drive mechanism is rotated to one side,
First, the rotating shaft 12 rotates one direction through the gears of each runner 25 until the louver 11 becomes parallel to the opening / closing shaft 13 and then stops, and then the opening / closing shaft 13 rotates and moves the leading louver 11a to one side to move the louver. 11 is moved from one end side of the head rail 10 to the other end side, and the drive shaft 15 is rotated in the opposite direction, the rotary shaft 12 becomes the louver 11.
Reversely rotates until it becomes parallel to the opening / closing axis 13 and then stops, and then the opening / closing axis 13 rotates and moves the leading louver 11a in the opposite direction to move the louver 11 from the other end side to the one end side of the head rail 10. In the vertical blind opening / closing device, a control plate 45 is arranged on the other end side of the head rail 10 so as to be slidable in the longitudinal direction, and a step hole through which the rotary shaft 12 and the open / close shaft 13 penetrate is provided in the control plate.
47 is provided, a screw is formed at least near the ground end side of the rotary shaft 12, and the rotary shaft 12 is provided in the step hole 47 of the control plate 45.
Also, a rotary shaft top 48 that engages with the screw of the opening / closing shaft 13 is attached in a slippery manner, and a control plate is provided on the other end side of the head rail 10.
There is a regulation means to regulate the sliding range of 45.

[Operation] When the drive shaft of the drive mechanism is rotated to one side, as shown in FIG. 11, first, the rotary shaft 12 rotates in the direction of arrow A and the louver 11 rotates in the direction of arrow B up to the rotation limit.
The open / close shaft 13 remains stopped. At this time, the control plate tries to move to the one end side by the rotary shaft top 48 that engages with the screw of the rotary shaft, but the movement is blocked by the stop pin 56, so the rotary shaft top 48 slips. 12th
As shown in the figure, at the rotation limit where the louver 11 is parallel to the open / close shaft 13, the rotation transmission of the drive shaft moves to the open / close shaft composed of the rotary shaft, and the rotary shaft becomes reversible. Open / close shaft 13 arrow C
When the head runner 11a is rotated in the direction, the leading runner 11a moves from one end side to the other end side of the head rail 10, but at this time, the control plate 45 also moves to the other end side by the opening / closing shaft top 58 engaging with the screw of the opening / closing shaft 13. To do. When the control plate 45 moves, the rotary shaft top 48 provided on the control plate 45 rotates the rotary shaft 12 in the arrow G direction. The direction of the rotary shaft screw is such that when the rotary shaft top 48 moves to the other end side, the rotary shaft 12 moves from one rotation limit side to the other rotation limit side, and when the rotary shaft 48 top moves to the one end side, the rotary shaft 12 reverses. Each is set to rotate. When the rotary shaft rotates in the direction of arrow G, the louver 11 that rotates in the direction of B and becomes parallel to the opening / closing shaft 13 starts to reverse in the direction of arrow D. As shown in Fig. 13, the louver reverses 90 degrees and the open / close shaft
When orthogonal to 13, the control plate 45 hits the common bearing 55 and cannot move any more, so that the reverse rotation of the rotary shaft 12 also stops.
However, the opening / closing shaft 13 moves the orthogonal louvers 11a from one end side to the other end side.

Next, as shown in FIG. 14, when the drive shaft is rotated in the reverse direction, first, only the rotary shaft 12 rotates in the direction of arrow G to move the louver.
Rotate 11 in the direction of arrow D. At this time, the rotary shaft top 18
Tries to move the control plate 45 to the other end side by the rotation of the rotary shaft 12, but the movement of the control plate is blocked by the common bearing 55, so that the rotary shaft top slips. Axis of rotation
When 12 reaches the rotation limit in the direction of arrow G, the louver 11 becomes parallel to the opening / closing shaft 13 as shown in FIG. Then, the opening / closing shaft 13 starts rotating in the direction of the arrow H to move the leading louver 11a from the other end side to the one end side. With the rotation of the opening / closing shaft 13 in the direction of the arrow H, the opening / closing shaft top 58 moves the control plate 45 to the one end side. When the control plate 45 moves to the one end side, the rotary shaft top 48 rotates the rotary shaft 12 in the rotatable arrow A direction. When the rotating shaft rotates in the direction of arrow A, each louver rotates in the direction of arrow B. When each louver rotates 90 degrees and is orthogonal to the opening / closing axis, the control plate hits the stop pin and does not move any further, so each louver moves to one end side in a state orthogonal to the opening / closing axis and becomes the state shown in FIG. 11. .

In this way, when the louvers move for opening and closing, the orthogonal louvers do not always contact the opening / closing axis,
There is no risk that the louver will not rotate smoothly after opening and closing.

[Example] An apparatus of the present invention will be described based on an example shown in the drawings.

As shown in FIG. 1, a case 14 is provided at one end of the head rail 10, and a rotary gear 20 and an open / close gear 21 are fixed to one ends of a rotary shaft 12 and an open / close shaft 13 in the case. The rotating shaft 12 and the opening / closing shaft 13 extend in the head rail 10 in parallel with the longitudinal direction, and the gears of the runners 25 rotate integrally with the rotating shaft, but are slidably fitted to each other. The gear meshes with a gear that is integral with the vertical axis 29 of each runner 25. Since the louver 11 is hung on the vertical shaft 29, when the rotating shaft 12 rotates, all the slats rotate simultaneously. The opening / closing shaft 13 is a lead screw, and only the leading runner 25a is screwed onto the opening / closing shaft 13. Since each runner 25 is sequentially connected via the spacer 26,
When 13 rotates in one direction, the leading runner pulls the other runners to close the blinds, and when it rotates backwards, the leading runner pushes the blinds to open the blinds.

A rotary gear 20 and an open / close gear 21 are attached to the shaft ends of the rotary shaft 12 and the open / close shaft 13.
Is fixed. A drive shaft 15 is supported by the case 14, and a ball chain 16 is hung on its pulley. A feed screw 24 is provided on a part of the drive shaft 15, and a moving gear 18 is attached to the feed screw.
Are screwed together, and the moving gear meshes with the opening / closing gear 21. A rotary drive gear 19 is provided on the other end side of the drive shaft 15, and the rotary drive gear meshes with the rotary gear 20.

As shown in FIG. 1, a control plate 45 is arranged near the other end of the head rail 10. As shown in FIG. 2, the control plate 45 has two step holes 47, and one of the step holes has a rotary shaft.
An opening / closing shaft 13 penetrates the other 12. The rotary shaft 12 is a shaft having a shape in which a single spline is cut in a screw having the same lead as the opening / closing 13 but having the opposite direction. A rotary shaft top 48 and a wave washer 49, which are fitted to the rotary shaft 12, are fitted in the stepped hole through which the rotary shaft 12 passes, and a cover 50 is fixed from above. Opening and closing axis
An opening / closing shaft top 58 fitted to the opening / closing shaft 13 and a wave washer 49 are fitted in the stepped hole through which the cover 50 is fixed.

As shown in FIGS. 2 and 3, at the four corners of the control plate 45, there are an upper slider 53 along the upper surface of the upper guide 51 on the inner side surface of the head rail 10 and a lower slider 54 positioned below the lower guide 52. It is integrally formed. When the opening / closing shaft 13 rotates, the control plate 45 slides from the one end side of the head rail 10 to the other end side or vice versa by the opening / closing shaft top 58, but as shown in FIG. Rotary shaft 12 and open / close shaft
The 13 common bearings 55 regulate the movement limit of the control plate 45 to the other end side, and the stop pin 56 attached to the head rail 10 so as to contact the upper slider 53 or the lower slider 54 of the control plate 45 has a control plate.
The movement limit to the one end side of 45 is regulated. As shown in FIG. 4, the slider 57 of the runner 25 is located between the upper guide 51 and the lower guide 52 on the inner surface of the head rail 10, and the upper guide 51 and the lower guide 52 are vacant. The stopper pin 56 does not prevent the runner 25 from sliding.

As shown in FIG. 5, the drive shaft 15 comprises a stepped hollow shaft portion that rotates integrally with the pulley, and a grooved shaft portion 31 that is movably inserted into the hollow shaft portion. A limiting plate 32 and a coil spring 33 are attached to the end of the grooved shaft portion 31 on the pulley side, and as shown in FIG. 6, both ends 35, 35 of the coil spring 33 project into the fan-shaped opening 34 of the limiting plate 32. The protrusion 36 of the pulley 17 is inserted between the both ends 35, 35. A feed screw 24 is formed on the central peripheral surface of the hollow shaft portion 30, and a female screw of the shaft hole of the moving gear 18 is started on the feed screw 24. As shown in FIG. 7, an opening 37 having a central angle of about 120 degrees is opened in the peripheral surface of the hollow shaft portion 30 on both sides of the feed screw 24, and stoppers 23a and 23b are inserted through the opening 37 to form a grooved shaft. Planted in part 31. The rotary drive gear 19 is attached to the side of the hollow shaft portion 30 opposite to the pulley via a roll-shaped key 38 that can freely move in and out. As shown in FIG. 8, the rotary drive gear 19
The inner circumference has a pitch angle of 120 degrees, and is composed of three convex portions 41 contacting the circumferential surface of the hollow shaft portion 30 and three concave portions 42 that form a gap, and the key 38 is 120 degrees on the circumferential surface of the hollow shaft portion 30. It is fitted into three key holes 39 opened at the pitch angle of. The cross section of the grooved shaft portion 31 inside the hollow shaft portion 30 has a pitch angle of 120 degrees and three crests 43.
And the valley part 44, and the mountain part 43 comes under the key hole 39,
Since 38 projects from the peripheral surface of the hollow shaft portion 30 and engages with the convex portion 41 of the rotary drive gear 19, the rotary drive gear 19 rotates integrally with the hollow shaft portion 30, but the valley portion of the grooved shaft portion 31. When 44 comes under the key hole 33, the key 38 retracts from the peripheral surface of the hollow shaft portion 30, so that the rotary drive gear 19 stops on the hollow shaft portion 30. Protrusion 22
When the stoppers 23a or 23b hit the a and 22b, the grooved shaft portion 31 slips with respect to the hollow shaft portion 30 as shown in FIG. The range of the slip angle is restricted to 60 degrees by the limiting plate 32. When the grooved shaft portion 31 slips, as shown in FIG. 10, the key 38 that has coupled the rotary drive gear 19 to the hollow shaft portion 30 withdraws, so that the rotary drive gear 19 rotates the hollow shaft portion 30. Stop without being driven. Moving gear 18 is stopper 23
The ball chain 16 rotates together with a or 23b in the direction in which the pulley 17 is rotated.

Next, opening / closing and rotation of the louver by the device of the present invention will be described.

When the ball chain 16 is pulled in one direction, the pulley 17 rotates and the protrusion 36 of the pulley pushes the end portion 35 of the coil spring 33, so that the grooved shaft portion 31 rotates together with the hollow shaft portion 30. At this time, the crest portion 43 of the grooved shaft portion 31 is below the key hole 39, and the key 38
Since the rotary drive gear 19 is rotated together with the hollow shaft portion 30 via the rotary gear 20, the rotary gear 20 is rotated, and the rotary shaft 12 and the louver 11 are turned in the directions A and B as shown in FIG. 12th
As shown in the figure, when the louver 11 approaches one turning limit that is substantially parallel to the head rail 10, the stopper 23b hits the protrusion 22b and the rotation of the grooved shaft portion 31 is blocked. When the rotation of the grooved shaft portion 31 is blocked, as shown in FIG.
Slips on the hollow shaft portion 30. That slip angle
At 60 degrees, as shown in FIG. 10, since the trough 44 of the grooved shaft portion 31 comes under the key hole 39 and the roll 38 falls into the trough portion 44, the rotary drive gear 19 becomes the hollow shaft portion 30. It stops without receiving the rotational drive of. In this way, the slat 11 rotates to one turning limit, but no more. During this time, the 11th
As shown in the figure, the rotary shaft top 48 tries to move the control plate 45 to the case side by the rotation of the rotary shaft 2, but the movement is blocked by the stopper 56.
Slip rotates and the control plate 45 does not move.

On the other hand, the moving gear 18 moves on the feed screw 24 without meshing with the open / close gear 21 until it is blocked by the stopper 23b, but when the movement is blocked by the stopper, it rotates together with the drive shaft 15. The open / close gear 21 and open / close shaft that mesh with it
13 rotates to move the louver 11 to the other end side. Open / close shaft 13
When is rotated in the C direction, the opening / closing shaft top 58 moves the control plate 45 to the other end side, as shown by the arrow in FIG. Control board 45
Is moved to the other end side, the rotary shaft top 48 moves the rotary shaft 12 to the 11th position.
It is rotated in the direction of arrow G, which is the opposite of the figure. The rotating shaft 12 has an arrow G
When the louver 11 rotates in the direction, the louver 11 moves to the other end side as shown by the arrow E while rotating in the arrow D direction. When the louver 11 is orthogonal to the rotary shaft 12, the control plate 45 has a common bearing 55 at the other end.
The rotary shaft 12 is not rotated any further by the rotary shaft top 48 because it abuts against and stops. The common bearing 55 is a control plate
It also serves as a regulatory measure for 45. As shown in FIG. 13, the blind that reaches the other end side with the leading louver 11a orthogonal to the rotating shaft 12 is closed. So the ball chain
When the operation of 16 is stopped, the elasticity of the coil spring 33 causes the key hole 39
The mountain portion 43 of the grooved shaft portion 31 again comes under. That is, when both the hollow shaft portion 30 and the grooved shaft portion 31 stop or rotate, the stoppers 22a and 22b are always in the state shown in FIG.

Then, when the ball chain 16 is pulled in the opposite direction, that is, the direction in which the blinds open, the rotary drive gear 19 reverses integrally with the drive shaft 15, so that the rotary gear 20 and the rotary shaft 12 are indicated by arrows G and D in FIG. The rotating shaft 12 and the louver 11 are rotated in the directions shown. When the rotary shaft 12 rotates in the direction of arrow G, the rotary shaft top 48
Tries to move the control plate 45 to the other end side, but the control plate 45
Since they are in contact with the common bearing 55 and cannot move, the rotary shaft top 48 slips and rotates. This louver
While the 11 rotates 180 times, the moving gear 18 moves from the position engaging with the stopper 23b to the position engaging with the stopper 23a on the feed screw 24. As shown in FIG. 15, when the louver 11 approaches the other turning limit that is substantially parallel to the longitudinal direction of the head rail 10, the projection 22a and the stopper 23b intersect and cause the grooved shaft portion 31 to slip. When the slip angle reaches 60 degrees, the key 38
Falls into the trough portion 44 of the grooved shaft portion 31, and the rotary drive gear 19 stops. Then, since the stopper 23a blocks the movement of the moving gear 18, the moving gear 18 rotates integrally with the drive gear 15, and the rotating gear reverses the opening / closing shaft 13 as shown by an arrow H in FIG. Therefore, the leading louver 11a moves in the direction of arrow I where the blind opens. When the opening / closing shaft 13 rotates in the arrow H direction, the opening / closing shaft top 58 moves the control plate 45 in the arrow J direction. When the control plate 45 moves in the direction of arrow J, the rotary shaft top 48
Rotates the rotating shaft 12 in the direction of arrow A, so that the louver 11 moves toward the case while rotating in the direction of arrow B. Louver
When 11 is orthogonal to the rotary shaft 12, the control plate 45 contacts the stop pin 56 and cannot move in the direction of the arrow J any more, so the rotation of the rotary shaft 12 is stopped. The louver 11 moves to the case side in a state of being orthogonal to the rotation axis 12, and the blind opens as shown in FIG.

Thus, in the device of the present invention, when the ball chain 16 is pulled on the one hand, for example, in the closing direction of the blind, the louver 11 first rotates to one turning limit substantially parallel to the longitudinal direction of the head rail 10, and then the blind is closed. When the louver 11 moves in the direction of the louver 11 and then pulls in the opposite direction, the louver 11 first rotates to the other turning limit that is substantially parallel to the longitudinal direction of the head rail 10 and then moves in the direction in which the blind opens, so that the slat 11 turns before opening and closing. The angle of rotation is less than 180 degrees, and the blinds can be opened and closed quickly. When the louvers 11 start to move, they are orthogonal to the longitudinal direction of the head rail 10, so that the left and right ends of the louvers do not overlap each other. Therefore,
The louvers 11 rotate smoothly after the movement, and the inclination angles of all the louvers 11 are always uniform. The drive mechanism for the rotary shaft and the open / close shaft does not need to be limited to the one shown in the embodiment.When the input shaft is rotated to one side, only the rotary shaft first rotates to one rotation limit and then stops in the reversible state. However, any mechanism may be used as long as the opening / closing shaft rotates in one direction.

Further, although the rotary shaft of the embodiment has a screw in its entire length, the screw may be limited only to the moving range of the control plate.

[Effects of the Invention] As described above, the device of the present invention is such that, when the drive shaft of the drive mechanism is rotated in one direction, the louver rotates in one direction, becomes parallel to the rotation axis, and then opens and closes. Since the louver is orthogonal to the rotation axis during opening and closing movement of the louver, unlike the conventional louver that was opened and closed while being parallel to the rotation axis, the left and right edges of the louver do not overlap. The louvers can be smoothly rotated, and once the angles of all the louvers are made uniform, the louvers have the excellent effect that the angles of all the louvers are always uniform.

[Brief description of drawings]

FIG. 1 is a front view showing a main part of a vertical blind equipped with a device according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of a control plate of FIG. 1, and FIGS. 1 is a sectional view taken along line III- and IV-IV in FIG. 1, FIG. 5 is a sectional view of the drive shaft in FIG. 1, FIG. 6 is FIG. 7 and FIG. 8 is VI in FIG. 5, respectively. -VI
9 is a sectional view taken along line VII-VII, line VIII-VIII, and FIGS. 9 and 10 correspond to FIGS. 6 and 8 when the hollow shaft portion and the grooved shaft portion slip. 11 to 15 are schematic views of the blind as seen from the bottom surface, showing the state of rotation and movement of the louver as the blind is opened and closed. In the drawing, reference numeral 10 is a head rail, 11 is a louver, 12 is a rotation shaft, 13 is an opening / closing shaft, 14 is a case, 15 is a drive shaft, 20 is a runner, 25 is a runner, 26 is a spacer 45 is a control plate, and 29 is a A vertical axis, 48 is a rotary shaft top, and 58 is an open / close shaft top.

Claims (1)

(57) [Claims] 1. A head rail, a large number of runners slidably provided on the head rail, a spacer for sequentially connecting the runners, and a spacer for restricting a maximum distance between the runners, and a half-rotation for each runner. A vertical axis attached to
A louver suspended from the vertical shaft to rotate integrally therewith, two parallel rotary shafts extending in the longitudinal direction of the head rail and penetrating each runner, and an opening / closing shaft, and the rotary shaft attached to each runner. A gear that engages with and transmits the rotation of the rotary shaft to the vertical shaft; a top mounted on a leading runner and engaged with a screw of the opening / closing shaft and sent by rotation of the opening / closing shaft; and one end of the head rail. And a drive mechanism for rotating the rotating shaft and the opening / closing shaft. When the drive mechanism rotates the drive shaft to one side, first, only the rotating shaft is rotated to one rotation limit, and then a reversible state is possible. Then, only the open / close shaft is rotated to one side, and the drive shaft is rotated to the other.First, only the rotary shaft is rotated to the other rotation limit, and then the reversible state is stopped, and then the A device configured to rotate only the opening / closing shaft to the other, wherein at least the other end of the rotating shaft is formed into a screw, and a control plate is arranged near the other end of the head rail. A rotary shaft hole and an open / close shaft hole through which the rotary shaft and the open / close shaft pass are opened, and a rotary shaft top engaging with a screw of the rotary shaft is slip-rotatably attached to the rotary shaft hole, and the open / close shaft hole is provided with the rotary shaft hole. An opening / closing shaft top engaged with a screw of the opening / closing shaft is attached so as to be capable of slip rotation, and when the control plate is moved to one side by the opening / closing shaft top by rotation to one side of the opening / closing shaft, the rotating shaft top causes the rotation shaft to move. A vertical blind opening / closing device characterized in that a screw of the rotary shaft is formed so as to rotate in a rotatable direction.