JP4966849B2 - Vertical blind - Google Patents

Description

  The present invention relates to a vertical blind in which a plurality of slats can be angle-adjusted at different speeds.

  The vertical blind is suspended and supported by a plurality of runners supported so as to be movable in the hanger rail so that the angle of each slat can be adjusted, and the slat is pulled out along the hanger rail and the angle of the slat is adjusted. The amount of light collected into the room can be adjusted as appropriate.

The slat is made of a cloth having a light shielding property, and the angle is adjusted in the same phase by the operation of the operation device.
In Patent Document 1, an opaque louver and a semi-transparent louver are suspended and supported alternately, and the semi-transparent louver is always urged in the closing direction by the urging force of a coil spring, and both ends thereof are brought into contact with the opaque louver. A vertical blind is disclosed in which the opaque louvers are covered with a translucent louver when the opaque louvers are rotated.

In such a vertical blind, if the opaque louvers are in an open state, it is possible to take in external light from between the opaque louvers via the translucent louvers. Also, as the opaque louver is rotated, the translucent louver is always rotated following the opaque louver by the biasing force of the coil spring, and when the opaque louver is rotated to the fully closed state, the translucent louver becomes opaque louver. The outside light is blocked.
Japanese Patent No. 3228687

  In the vertical blind described in Patent Document 1, since the translucent louver is always urged in the closing direction by the coil spring, the opaque louver is rotated in a direction against the urging force of the coil spring to be in the fully closed state. Sometimes, the biasing force of the coil spring increases as it approaches full closure.

Therefore, when the opaque louver and the translucent louver are fully closed to one side, an operating force against the urging force of the coil spring is required, which increases the operating force.
Also, since the biasing force of the coil spring always acts on the opaque louver, if the backlash of the worm mechanism provided in the runner that supports the opaque louver is suspended, the opaque louver can be held in the fully closed state. However, there is a problem that light leakage occurs.

  An object of the present invention is to suspend and support first slats having light-shielding properties and second slats having semi-transparency alternately so that external light can be transmitted from between the first slats through the second slats. An object of the present invention is to provide a vertical blind that can reduce the rotational operation force of each slat.

  In claim 1, a large number of runners are supported on a hanger rail, a suspension shaft that supports suspension of slats on each runner is rotatably supported, and a tilt shaft inserted through each runner can be rotated by an operation device. In each vertical runner, each runner is provided with a gear mechanism that transmits the rotation of the tilt shaft to the suspension shaft, and the slats can be rotated in the same direction by the operating device. The first slat with light-shielding property and the second slat with semi-transparency are alternately suspended and supported, and the gear ratio of the gear mechanism is one of the first slat and the second slat. The rotation angle amount is set to be larger than the other rotation angle amount, and at least a predetermined value or less is provided between the suspension shaft and the gear mechanism of the runner that supports the slat having a large rotation angle amount. Rotation torque Comprising a torque transmitting apparatus does not transmit the idling rotational torque of a predetermined value or more as well as transmission, the gear ratio of the gear mechanism, and the gear ratio for generating a rotation range in which idle rotation does not occur in the torque transmission device.

In the present invention, the rotation angle amount of the second slat is set larger than the rotation angle amount of the first slat.
According to a third aspect of the present invention, the gear ratio of the gear mechanism is such that the rotation angle amount of the second slat is in the range of 1.5 to 4 times the rotation angle amount of the first slat.

  According to a fourth aspect of the present invention, the first slat is suspended and supported from the suspension shaft via the first slat hanger, and the second slat is suspended from the suspension shaft via the second slat hanger. After the support and the second slat hanger abut on the first slat hanger, the second slat hanger is rotatable while abutting the first slat hanger.

  According to a fifth aspect of the present invention, the first slat is suspended and supported from the suspension shaft via the first slat hanger, and the second slat is suspended from the suspension shaft via the second slat hanger. The second slat hanger is supported and has a width that does not contact the first slat hanger until the second slat is rotated to a fully closed state.

  According to the present invention, the first slats having light-shielding properties and the second semi-transmissive slats are alternately suspended and supported, and external light is transmitted from between the first slats through the second slats. In the vertical blind that can be adopted, it is possible to provide a vertical blind that can reduce the rotational operation force of each slat.

(First embodiment)
Hereinafter, a first embodiment in which the present invention is embodied in a vertical blind will be described with reference to the drawings. In the vertical blind shown in FIGS. 1 and 2, a large number of first and second slats 2 a and 2 b are suspended from a hanger rail 1, and each slat 2 a and 2 b is movably supported in the hanger rail 1. Suspended from the runner 3 to be supported.

  The slat 2a is made of a light-shielding fabric, the slat 2b is made of a semi-permeable fabric such as a lace fabric, and the slats 2a and 2b are alternately suspended and supported. ing.

  Each runner 3 is inserted with a tilt shaft 4 engraved with three splines so as to be relatively movable in the axial direction, and both ends of the tilt shaft 4 are attached to both ends of the hanger rail 1. 5b is rotatably supported.

  As shown in FIG. 3, each runner 3 is rotatably supported by a suspension shaft 6 that suspends and supports the slats 2 a and 2 b, and a hook 7 is provided at the lower end of the suspension shaft 6. . Then, the first and second slat hangers 14a and 14b for hanging and supporting the slats 2a and 2b are hooked on the hooks 7, respectively.

  An operating rod (operating device) 9 is suspended and supported at one end of the hanger rail 1, and when the operating rod 9 is rotated, the tilt is made via a gear mechanism (not shown) disposed in the end cap 5a. The shaft 4 is rotated. As the tilt shaft 4 rotates, the suspension shaft 6 of each runner 3 is rotated so that the slats 2a and 2b supported by the runner 3 are rotated.

  The operation cord 10 suspended from the end cap 5a is disposed so as to be able to circulate in the hanger rail 1, and is attached to the leading runner of the runner 3 that is suspended most toward the end cap 5a. Moreover, each runner 3 is connected by the spacer 11, and the maximum separation distance of each runner 3 is set.

  Accordingly, if the operation code 10 is operated to move the leading runner, the subsequent runners are sequentially drawn following the leading runner, or the subsequent runners are sequentially pushed back by the leading runner. By such an operation, the slats 2a and 2b suspended and supported by the runners 3 are pulled out along the hanger rail 1 or folded on the other end side of the hanger rail 1.

  A gear mechanism (driving force transmission means, speed conversion means) 8 that rotates the suspension shaft 6 with the rotation of the tilt shaft 4 is built in the runner 3. The runner 3 that supports the suspension of the slat 2a and the runner 3 that supports the suspension of the slat 2b have different gear ratios of the gear mechanism 8, for example, the rotation angle of the slat 2b is twice the rotation angle of the slat 2a. Is set. The rotation angle is set by adjusting the twist angle and the lead angle of the teeth of the worm 12 and the worm wheel 13 constituting the gear mechanism 8.

  Accordingly, when the tilt shaft 4 is rotated, the slats 2a and 2b are simultaneously rotated. However, the rotation angle of the suspension shaft 6 that supports the slat 2b is rotated by the rotation of the suspension shaft 6 that supports the slat 2a. Twice the corner.

  The worm wheel 13 is rotatably supported by the suspension shaft 6, and a coil spring (torque transmission device) 16 is disposed between the worm wheel 13 and the upper edge. The rotation of the worm wheel 13 is always transmitted to the suspension shaft 6 through friction caused by the biasing force of the coil spring 16.

  Further, a stopper (not shown) for setting a rotation range is provided between the suspension shaft 6 and the runner 3, and the slat 2 rotates in a direction substantially along the hanger rail 1 as the suspension shaft 6 rotates. Then, further rotation of the suspension shaft 6 in the same direction is prevented. In a state where the rotation of the suspension shaft 6 is prevented, the worm wheel 13 is idled with respect to the suspension shaft 6.

  Next, the operation of the vertical blind configured as described above will be described. When the operation code 10 is operated and the leading runner 3 is pulled out along the hanger rail 1, the subsequent runners 3 are sequentially pulled out at a predetermined interval. Then, after the leading runner 3 is pulled out to one end of the hanger rail 1, the operation rod 9 is operated to rotate the slats 2a, 2b in the direction along the hanger rail 1, as shown in FIG. It becomes a state.

  FIG. 4 shows the transition of the rotation angle of the slat hangers 14a and 14b from step 1 to step 10 until the slats 2a and 2b rotated to the fully closed state are rotated by approximately 180 degrees and again set to the fully closed state. .

  Step 2 shows a state in which the slat hanger 14a that suspends and supports the slat 2a from Step 1 is rotated by 40 degrees. In this state, the slat hanger 14b that suspends and supports the slat 2b rotates from the step 1 by approximately 80 degrees.

  Steps 3 to 5 show a case where the slat hanger 14a is further rotated by 5 degrees from Step 2. In step 5, the end portions of the slat hangers 14b come into contact with the slat hangers 14a located on both sides.

  In Steps 5 to 9, since the slat hanger 14b is in contact with the slat hanger 14a and the rotation operation is restricted, the worm wheel 13 is rotated while rotating freely with respect to the suspension shaft 6, and the slat hanger 14b is rotated. Eventually, as shown in step 10, the slat hangers 14a and 14b are rotated to the fully closed state. In steps 9 and 10, the worm wheel 13 is idled with respect to the suspension shaft 6 by the runner 3 that supports the suspension of the slat hanger 14 b.

  FIG. 5 shows the transition of the rotation angle when the slat hangers 14a and 14b are rotated in the reverse direction from step 10 to step 1 shown in FIG. This case is also equivalent to the operation of FIG. 4 except for the difference in rotation direction.

FIG. 6 shows a case where the gear ratio of the gear mechanism 8 of each runner 3 is set so that the rotation angle of the slat hanger 14b is 1.5 times the rotation angle of the slat hanger 14a.
In this case, since the difference in rotation angle between the slat hangers 14a and 14b is small, the slat hanger 14b does not come into contact with the slat hanger 14a in steps 11 to 18, and the slat hanger 14b is moved to the slat hanger 14a in step 19. Abut. Then, until step 21, the slat hanger 14b abuts on the slat hanger 14a and sequentially rotates while the rotation angle is restricted, and eventually the slat hanger 14a, 14b is rotated to the fully closed state as shown in step 21.

  FIG. 7 shows a case where the gear ratio of the gear mechanism 8 of each runner 3 is set so that the rotation angle of the slat hanger 14b is three times the rotation angle of the slat hanger 14a. In this case, the end portion of the slat hanger 14b comes into contact with the slat hanger 14a in step 33 in which the slat hanger 14a is rotated by 30 degrees, and thereafter, the rotation angle of the slat hanger 14b is regulated by the slat hanger 14a. As the slat hanger 14a rotates, it rotates sequentially.

  FIG. 8 shows a case where the gear ratio of the gear mechanism 8 of each runner 3 is set so that the rotation angle of the slat hanger 14b is four times the rotation angle of the slat hanger 14a. In this case, the end of the slat hanger 14b comes into contact with the slat hanger 14a at step 41 where the slat hanger 14a is rotated 20 degrees, and thereafter, the rotation angle of the slat hanger 14b is regulated by the slat hanger 14a until step 50. As the slat hanger 14a rotates, it rotates sequentially.

With the vertical blind constructed as described above, the following operational effects can be obtained.
(1) When the slats 2a and 2b are rotated approximately 180 degrees from one fully closed state to the other fully closed state, the light-shielding slats 2a and the race fabric slats 2b have different phases. Can be rotated.
(2) The slat 2b can be rotated at a rotation angle larger than the rotation angle of the slat 2a. And after the edge part of the slat hanger 14b contact | abuts to the slat hanger 14a, the slats 2a and 2b can be rotated, maintaining the state. Therefore, the end of the slat 2b can be rotated while being in close contact with the slat 2a in most of the rotation range of the slats 2a and 2b.
(3) Since the slats 2a and 2b can be rotated while bringing the end portions of the slats 2b into close contact with the end portions of the adjacent slats 2a, the slats 2b made of lace fabric can be used between the slats 2a having light shielding properties. The slats 2a and 2b can be rotated while covering. Therefore, it is possible to adjust the amount of light collected while daylighting soft light transmitted through the lace fabric.
(4) Since the angle can be adjusted while the slats 2a having light shielding properties are covered with the slats 2b made of lace fabric, a vertical blind with a novel aesthetic appearance can be configured.
(5) The angle of the slats 2a and 2b can be adjusted in parallel by operating the operation rod 9.
(6) The larger the difference between the gear ratio of the runner 3 that supports the slat 2a in suspension and the gear ratio of the runner 3 that supports the slat 2b, the wider the ends of the slat 2b within the rotation range of the slat 2a. The portion can be brought into close contact with the slat 2a.
(7) In FIG. 4, since the slat hangers 14a and 14b do not contact each other from step 1 to step 4, the slats 2a and 2b can be rotated with a slight operating force.
(8) In FIG. 4, from step 5 to step 10, the slat hanger 14b rotates while contacting the slat hanger 14a. The amount corresponding to the difference, that is, the amount by which the amount of rotation of the slat hanger 14b is restricted and reduced, causes idling between the suspension shaft 6 and the worm wheel 13. However, since the idling amount is small, the increase in operating force is slight. Further, the operating force does not increase as the slats 2a, 2b approach the fully closed state.
(9) In FIG. 6, since the slat hangers 14a and 14b do not contact each other from step 11 to step 18, the slats 2a and 2b can be rotated with a slight operating force.
(10) In FIG. 6, from step 18 to step 21, the slat hanger 14b rotates while contacting the slat hanger 14a. The amount corresponding to the difference, that is, the amount by which the amount of rotation of the slat hanger 14b is restricted and reduced, causes idling between the suspension shaft 6 and the worm wheel 13. However, since the idling amount is small, the increase in operating force is slight. Further, since the angular range in which idling occurs in the runner 3 that suspends and supports the slat hanger 14b is narrower than that shown in FIG. 6, the operating force can be further reduced.
(11) In FIG. 7, from step 31 to step 32, the slat hangers 14a, 14b do not contact each other, so that the slats 2a, 2b can be rotated with a slight operating force.
(12) In FIG. 7, from step 32 to step 40, the slat hanger 14b rotates while contacting the slat hanger 14a. The amount corresponding to the difference, that is, the amount by which the amount of rotation of the slat hanger 14b is restricted and reduced, causes idling between the suspension shaft 6 and the worm wheel 13. However, since the idling angle is small, the increase in operating force is slight. Further, the operating force does not increase as the slats 2a, 2b approach the fully closed state.
(13) In FIG. 8, since the slat hangers 14a and 14b do not contact each other from step 41 to step 42, the slats 2a and 2b can be rotated with a slight operating force.
(14) In FIG. 8, from step 42 to step 50, the slat hanger 14b rotates while contacting the slat hanger 14a. As much as this difference, idling occurs between the suspension shaft 6 and the worm wheel 13. However, since the idling angle is small, the increase in operating force is slight. Further, the operating force does not increase as the slats 2a, 2b approach the fully closed state.
(15) Since the slat hanger 14b is not configured to be rotated by the biasing means, the state can be maintained if the slats 2a and 2b are rotated to the fully closed state.
(Second embodiment)
FIG. 9 shows a second embodiment. This embodiment shows a case where the length of the slat hangers 14a, 14b is shorter than that of the first embodiment. It is assumed that the rotation angle of the slat hanger 14b is set to twice the rotation angle of the slat hanger 14a. Moreover, after the slat is rotated to the fully closed state, a stopper for preventing further rotation is not provided. Other configurations are the same as those in the first embodiment.

  When the slat hangers 14a and 14b are rotated from the fully closed state shown in FIG. 9A, as shown in FIG. 9B, the slat hangers 14a and 14b are changed from the N-type to the state shown in FIG. As shown, after the slat hangers 14a and 14b are in the V shape, the state shown in FIG. In this state, light is collected from between the slats 2a through the slats 2b.

  Between the state shown in FIG. 9 (a) and the state shown in FIG. 9 (d), the slat hanger 14b does not contact the slat hanger 14a and its rotation is not restricted. The slat hanger 14b is rotated approximately 180 degrees from the state shown in FIG.

  When the slat hangers 14a and 14b are further rotated in the same direction from this state, the slat hangers 14b come into contact with the slat hangers 14a and the rotation is restricted. Then, as shown in FIG. 9 (e), when the slat hanger 14a is rotated to the fully closed state, the slat hanger 14b is pushed back by the slat hanger 14a and reversely rotated to be in a state parallel to the slat hanger 14a.

The same operation is performed when the slat hangers 14a and 14b are rotated in the reverse direction from the state shown in FIG.
With such a configuration, the angle between the slats 2a having light shielding properties can be adjusted while being covered with the slats 2b of the lace fabric, and when the slats 2b are rotated in advance while being rotated to the fully closed state, The slats 2a and 2b can be converged so as to be parallel in a direction substantially along the hanger rail 1.

With the vertical blind constructed as described above, the following operational effects can be obtained.
(1) In the period from the state shown in FIG. 9A to the same figure (d), since the slat hangers 14a and 14b do not contact each other, they can be rotated with a slight operating force.
(2) From the state shown in FIG. 9 (d) to the state shown in FIG. 9 (e), the slat hanger 14b is reversed based on the rotation of the slat hanger 14a. An idle rotation occurs between the shaft and the worm wheel. However, the rotation angle of the slat hanger 14a in the meantime is small, and the increase in operating force is slight.
(3) Since the slat hanger 14b is not configured to be rotated by the urging means, the state can be maintained if the slats 2a and 2b are rotated to the fully closed state.
(Third embodiment)
10 and 11 show a third embodiment. In this embodiment, the locking pieces 15 are projected from both ends of the slat hanger 14b that supports the slat 2b of the lace fabric so as to extend the length of the slat hanger 14b. It is assumed that the rotation angle of the slat hanger 14b is set to twice the rotation angle of the slat hanger 14a. Other configurations are the same as those in the first embodiment.

  With such a configuration, when the slat hangers 14a and 14b are rotated as shown in FIGS. 11 (a) to 11 (e), after being rotated to a V-type state as shown in FIG. 11 (c), The slat hanger 14b rotates while its locking piece 15 is in contact with the slat hanger 14a and the rotation angle is regulated.

With the vertical blind constructed as described above, the following operational effects can be obtained.
(1) Since the slat hangers 14a and 14b do not contact each other from the state shown in FIG. 11A to the state shown in FIG. 11C, the slat hangers 14a and 14b can be rotated with a slight operating force.
(2) From the state shown in FIG. 11 (c) to the state shown in FIG. 11 (e), the runner that supports the slat hanger 14b in a suspended manner causes idle rotation between the suspended shaft and the worm wheel, but increases the operating force. Is slight.
(3) Since the slat hanger 14b is not configured to be rotated by the urging means, the state can be maintained if the slats 2a and 2b are rotated to the fully closed state.
(4) Since the locking piece 15 of the slat hanger 14b is brought into contact with the slat hanger 14a, the slats supported suspended from the slat hangers 14a and 14b do not rub against each other. Therefore, the occurrence of fraying of the slat fabric can be prevented.

You may implement the said embodiment in the following aspects.
-You may set the rotation angle amount of the 1st slat 2a so that it may become larger than the rotation angle amount of the 2nd slat 2b.

It is a front view which shows a vertical blind. It is a side view which shows a vertical blind. It is a side view which shows a runner. It is explanatory drawing which shows rotation operation | movement of a slat hanger. It is explanatory drawing which shows rotation operation | movement of a slat hanger. It is explanatory drawing which shows rotation operation | movement of a slat hanger. It is explanatory drawing which shows rotation operation | movement of a slat hanger. It is explanatory drawing which shows rotation operation | movement of a slat hanger. (A)-(e) is explanatory drawing which shows rotation operation | movement of the slat hanger of 2nd embodiment. It is a perspective view which shows the vertical blind of 3rd embodiment. (A)-(e) is explanatory drawing which shows rotation operation | movement of the slat hanger of 3rd embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Frame (hanger rail), 2a, 22a ... 1st slat, 2b, 22b ... 2nd slat, 3 ... Runner, 4 ... Tilt axis, 6 ... Suspension shaft, 8 ... Gear mechanism, 9 ... Operating device (Operating rod), 14a ... first slat hanger, 14b ... second slat hanger, 16 ... torque transmission device (coil spring).

Claims (5)

A number of runners are supported on the hanger rail, a suspension shaft for supporting the suspension of the slats on each runner is rotatably supported, and a tilt shaft inserted through each runner can be rotated by an operation device. In a vertical blind provided with a gear mechanism that transmits the rotation of the tilt shaft to a suspension shaft, and the slats can be rotated in the same direction by the operating device.
The first slat with light-shielding property and the second slat with semi-transparency are alternately suspended and supported from each runner, and the gear ratio of the gear mechanism is such that the first slat and the second slat Is set to be larger than the rotation angle amount of the other, and at least between the suspension shaft and the gear mechanism of the runner that supports the slat having a large rotation angle amount. A torque transmission device that transmits a rotational torque that is less than or equal to a predetermined value and that does not transmit a rotational torque that is greater than or equal to a predetermined value due to idle rotation, and the gear ratio of the gear mechanism generates a rotation range in which idle rotation does not occur in the torque transmission device A vertical blind characterized by its ratio.   2. The vertical blind according to claim 1, wherein the rotation angle amount of the second slat is set larger than the rotation angle amount of the first slat.   The gear ratio of the gear mechanism is such that the rotation angle amount of the second slat is in a range of 1.5 to 4 times the rotation angle amount of the first slat. Item 3. The vertical blind according to Item 2.   The first slat is supported by suspension from the suspension shaft via a first slat hanger, and the second slat is supported by suspension from the suspension shaft via a second slat hanger. 4. After the second slat hanger abuts on the first slat hanger, the second slat hanger can be rotated while abutting on the first slat hanger. The vertical blind according to claim 1.   The first slat is supported by suspension from the suspension shaft via a first slat hanger, and the second slat is supported by suspension from the suspension shaft via a second slat hanger. The second slat hanger has a width that does not contact the first slat hanger until the second slat is rotated to a fully closed state. Vertical blinds described in 1.

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