JP6235236B2 - Operation device for solar shading device - Google Patents

Description

  The present invention relates to an operation device for a solar shading device such as a horizontal blind, a raising curtain, a pleated screen, and a roll blind.

  In the solar shading device, one end of the lifting / lowering cord is attached to the intermediate rail or the bottom rail provided at the lower part of the solar shading material suspended from the head box, and the other end of the lifting / lowering cord is attached to the winding shaft, By rotating the winding shaft, the lifting / lowering cord is wound and rewound to raise and lower the solar shading material. In such a solar shading device, an operation chain is hung on a pulley rotatably supported by the head box, and the pulley is rotated by operating this operation chain, and the rotational force is transmitted to the winding shaft. (See, for example, Patent Document 1).

JP 2010-261174 A

  In Patent Document 1, in order to reduce the noise generated when the pulley is rotated, the operation chain is suspended from the pulley via a pulley having irregularities that mesh with the balls of the operation chain. However, even with the technique of Patent Document 1, noise reduction is insufficient, and further noise reduction is required.

  This invention is made | formed in view of such a situation, and provides the operating device of the solar radiation shielding apparatus which can reduce the sound which generate | occur | produces when rotating a pulley.

  According to the present invention, there is provided an operating device for a solar shading device that operates the operating chain to raise and lower the solar shading material, and includes a pulley that hangs the operating chain and a case that rotatably supports the pulley. The operation device of the solar radiation shielding device is provided, wherein the case has an upper wall positioned above the pulley, and a cushion member is provided on a lower surface of the upper wall.

  The present inventor has intensively studied to reduce the operation sound generated when the pulley is rotated, but when the lower part of the operation chain is lowered than the lower part of the operation chain. I noticed that the operation sound was more worrisome. As a result of examining the cause in more detail, it was found that when the outer part of the operation chain was pulled down, the inner part of the operation chain jumped up and collided with the upper wall of the case to generate an operation sound. In addition, when the cause was further investigated, this operation sound was separated from the upper wall of the case by its own weight when the operation chain was not operated, and the upper wall of the case was bounced only when the outside part of the operation chain was pulled down. It was found to be caused by the collision.

  Although it was investigated whether or not the operation sound due to such a cause was generated even when the inner part of the operation chain was lowered, it was found that the operation sound hardly occurs when the inner part of the operation chain was lowered. As a result of the investigation, when the inside part of the operation chain is pulled down, a force in the direction toward the outside of the room is applied to the outside part of the operation chain. Since it is in contact with the case, it has been found that even if the inner part of the operation chain is pulled down, the operation sound due to the outer part of the operation chain colliding with the case hardly occurs.

  Thus, the problem to be solved by the present invention is unique only when the outside portion of the operation chain is pulled down, and has not been recognized in the prior art.

  The present invention has been intensively studied to solve this newly discovered problem. By placing a cushion member on the lower surface of the upper wall of the case, the operation sound caused by the operation chain colliding with the upper wall of the case is reduced. The present invention has been completed.

Hereinafter, various embodiments of the present invention will be exemplified. The following embodiments can be combined with each other.
Preferably, the upper wall extends straight forward without covering the pulley.
Preferably, the case includes an overhanging portion that guides the operation chain to the inside of the room outside the room of the pulley, the pulley includes a flange on one side or both sides, and the overhanging portion has a radius of the flange. Less than half.
Preferably, the pulley includes flanges on both sides.

It is a front view of the pleat screen of a 1st embodiment of the present invention. It is a right view of the pleat screen of FIG. It is a top view of the pleat screen of FIG. It is the enlarged view which extracted the operating device 13 and the ball chain 16 from FIG. 5A is a front view of the operating device 13, and FIG. 5B is a cross-sectional view taken along the line XX in FIG. 5A (in FIG. 5, a case cap 59, a gear plate 57, Only the pulley 15, the ball chain 16, and the screen 2 are displayed.) FIG. 6A is a cross-sectional view of the same cross section as FIG. 5B showing another configuration of the operating device 13.

  Hereinafter, embodiments of the present invention will be described. Various characteristic items shown in the following embodiments can be combined with each other. The invention is established independently for each feature.

  The pair type pleated screen of one embodiment of the present invention shown in FIGS. 1 to 5 has an upper screen 2 suspended from a head box 1 and an intermediate rail 3 attached to the lower end of the upper screen 2. A lower screen 4 is suspended and supported from the intermediate rail 3, and a bottom rail 5 is attached to the lower end of the lower screen 4.

  The upper screen 2 allows a semi-permeable fabric such as a lace fabric to be folded in a zigzag shape, and the lower screen 4 enables a light-shielding fabric to be folded in a zigzag shape.

  A pitch holding cord 39 is provided between the head box 1 and the bottom rail 5 to hold the pitch of the folds of the upper screen 2 and the lower screen 4. The pitch holding cord 39 is provided with a large number of annular holding portions 43 at equal intervals. After the holding portions 43 are inserted into the upper screen 2 or the lower screen 4, a first rail for raising and lowering the intermediate rail 3 is provided. By inserting the lifting / lowering cord 6 or the second lifting / lowering cord 7 for raising and lowering the bottom rail 5 through the holding portion 43, the holding portion 43 is prevented from coming off from the upper screen 2 or the lower screen 4, thereby the upper screen 2. In addition, the pitch of the lower screen 4 can be maintained. The elevating cords 6 and 7 are suspended on the same side of the upper screen 2 and the lower screen 4, and the pitch holding cord 39 is disposed on the opposite side of the elevating cords 6 and 7 with the upper screen 2 and the lower screen 4 interposed therebetween. Has been.

  A pitch holding cord holding member 51a for inserting and holding the pitch holding cord 39 and a lifting cord holding member 53a for holding the first lifting cord 6 and inserting and holding the second lifting cord 7 are attached to the intermediate rail 3. Is done. A pitch holding cord holding member 51 b that holds the pitch holding cord 39 and a lifting cord holding member 53 b that holds the second lifting cord 7 are attached to the bottom rail 5. The pitch holding cord 39 and the lifting cords 6 and 7 are attached to the intermediate rail 3 and the bottom rail 5 by these holding members.

  The first lifting / lowering cord 6 is attached to the intermediate rail 3 and attached to the first winding shaft 9 arranged on the outside of the room (the right side in FIG. 2 and the upper side in FIG. 3). The first winding shaft 9 rotates together with the first drive shaft 11. Further, the rotational force in the direction of arrow A in FIG. 3 applied to the pulley 15 by the ball chain 16 that is mounted on the pulley 15 is transmitted to the first drive shaft 11 via the first transmission clutch 20.

  Further, the second lifting / lowering cord 7 is attached to the bottom rail 5 and attached to the second winding shaft 10 disposed inside the room (the left side in FIG. 2 and the lower side in FIG. 3). The second winding shaft 10 rotates together with the second drive shaft 12. Further, the rotational force in the direction of arrow B in FIG. 3 applied to the pulley 15 by the ball chain 16 is transmitted to the second drive shaft 12 via the second transmission clutch 21.

  The drive shafts 11 and 12 are inserted through the stopper device 24 at the intermediate portion of the head box 1. When the ball chain 16 is released after the intermediate rail 3 or the bottom rail 5 is lifted, the stopper device 24 stops the rotation of the drive shafts 11 and 12 and prevents the intermediate rail 3 and the bottom rail 5 from dropping their own weight. Performs a known action. Between the head box 1 and the stopper device 24, a stopper spacer 49 made of a material softer than the housing of the stopper device 24 is provided. Thereby, the sound generated from the stopper device 24 is reduced.

  As shown in FIGS. 1 and 3, the drive shafts 11 and 12 are inserted through the governor device 36 on the side of the stopper device 24. The governor device 36 suppresses the rotation speed of the drive shafts 11 and 12 to a predetermined value or less without stopping the rotation of the drive shafts 11 and 12, and sets the lowering speed when the intermediate rail 3 and the bottom rail 5 are lowered by their own weight. Suppress below speed.

  Here, the operation of the pleated screen will be described. When the ball chain 16 is pulled in the direction of arrow A in FIG. 2, the rotational force generated by the force is transmitted to the transmission clutches 20 and 21 shown in FIG. 3 via the pulley 15. The first transmission clutch 20 transmits only the rotational force in the direction of arrow A in FIG. 3 to the first drive shaft 11 having a hexagonal bar shape, and the second transmission clutch 21 transmits only the rotational force in the direction of arrow B in FIG. Since it is configured to transmit to the hexagonal bar-shaped second drive shaft 12, the rotational force generated by pulling the ball chain 16 in the direction of arrow A in FIG. 2 is transmitted only to the first drive shaft 11, Only the first drive shaft 11 is rotated. By the rotation of the first drive shaft 11, the first winding shaft 9 rotatably supported by the support member 8 in the head box 1 rotates in the direction of arrow A in FIG. And the intermediate rail 3 attached to the tip of the first lifting / lowering cord 6 is raised.

  When the hand is released from the ball chain 16 in this state, the stopper device 24 is activated to prevent the intermediate rail 3 from being lowered by its own weight. In this state, when the ball chain 16 is pulled again in the direction of the arrow A and then released, the operation of preventing the self-weight drop of the stopper device 24 is released, and the first lifting / lowering cord 6 is rewound from the first winding shaft 9. As a result, the intermediate rail 3 is lowered.

  On the other hand, when the ball chain 16 is pulled in the direction of arrow B in FIG. 2, the rotational force generated by the force is transmitted to the transmission clutches 20 and 21 shown in FIG. The rotational force is transmitted only to the second drive shaft 12 by the action of the transmission clutches 20 and 21. By the rotation of the second drive shaft 12, the second winding shaft 10 rotatably supported by the support member 8 in the head box 1 rotates in the direction of arrow B in FIG. The bottom rail 5 attached to the tip of the second lifting / lowering cord 7 is lifted.

  When the hand is released from the ball chain 16 in this state, the stopper device 24 is activated to prevent the bottom rail 5 from dropping its own weight. In this state, when the ball chain 16 is pulled again in the direction of the arrow B and then released, the operation of preventing the weight of the stopper device 24 from falling is released, and the second lifting / lowering cord 7 is rewound from the second winding shaft 10. As a result, the bottom rail 5 is lowered.

  An intermediate limit device 37 that sets a maximum rewinding amount of the first lifting / lowering cord 6 from the first winding shaft 9 and sets a lower limit position of the intermediate rail 3 at the other end of the head box 1, A lower limit device 38 that sets the maximum rewind amount of the second lifting / lowering cord 7 from the two winding shaft 10 and sets the lower limit position of the bottom rail 5 is provided.

  Next, a detailed configuration of the controller device 13 will be described. As shown in FIG. 4, the operating device 13 includes a pulley 15 on which the ball chain 16 is hooked, and a case that rotatably supports the pulley 15. In this embodiment, the case is constituted by the operation device case 14 and the case cap 59. A gear plate 57 that rotatably supports the transmission gear 17 is disposed outside the room of the pulley 15. A drive gear 61 is engaged with the pulley 15, the drive gear 61 is engaged with the transmission gear 17, and the transmission gear 17 is engaged with the clutch gears 18 and 19. Therefore, when the pulley 15 is rotated by operating the ball chain 16, the rotation is transmitted to the clutch gears 18 and 19 via the drive gear 61 and the transmission gear 17. Since the clutch gears 18 and 19 are fitted to the input shafts 20a and 21a of the transmission clutches 20 and 21, when the clutch gears 18 and 19 are rotated, the input shafts 20a and 21a of the transmission clutches 20 and 21 are also rotated. Is done. As described above, the rotation applied to the pulley 15 is transmitted to the transmission clutches 20 and 21.

  The configuration of the case that accommodates the pulley 15 is not limited as long as the pulley 15 can be rotatably supported. Further, the configuration for transmitting the rotation applied to the pulley 15 to the transmission clutches 20 and 21 is not particularly limited, and the rotation may be transmitted by another gear configuration. Further, the transmission clutches 20 and 21 are not necessarily housed in the same case as the pulley 15, and a case for housing the transmission clutches 20 and 21 may be separately prepared.

  Here, the principle that an operation sound is generated when the ball chain 16 is operated and a method for reducing the operation sound will be described with reference to FIGS. As shown in FIGS. 5A to 5B, the ball chain 16 includes balls 16 a having an oval cross section arranged at equal intervals on a cord 16 b, and equally spaced along the circumferential direction of the pulley 15. When the ball 16a is engaged with the engagement recess 15b provided in the ball, the tensile force applied to the ball chain 16 is transmitted to the pulley 15 and converted into a rotational force.

  When the outside portion of the ball chain 16 is pulled strongly in the direction of arrow B in FIG. 5B, an upward force as shown by the arrow F is applied to the inside portion of the ball chain 16 by the reaction, which is indicated by a dotted line 16c. It was found that the ball 16a on the upper side of the pulley 15 might collide with the upper wall 59a of the case cap 59 to generate an operation sound. In the present embodiment, the cushion member 58 is disposed above the pulley 15, that is, below the front end of the upper wall 59 a of the case cap 59 in order to prevent such a sound from being generated. More specifically, a cushion member holding portion 59b is provided below the front end of the upper wall 59a, and a cushion member 58 made of thermoplastic polyurethane or the like is held on the holding portion 59b. By adopting such a configuration, it is possible to prevent the sound generated when the ball 16a collides with the upper wall 59a. The cushion member 58 is preferably a solid body from the viewpoint of ease of molding and durability, but may have a space inside. In this case, it is possible to effectively absorb the impact and effectively suppress the generation of sound. The method for fixing the cushion member 58 is not particularly limited. For example, the cushion member 58 may be fixed to the lower side of the upper wall 59a using an adhesive or an adhesive.

  When the inside part of the ball chain 16 is pulled strongly in the direction of arrow A in FIG. 5B, a force in the direction toward the outside of the room as indicated by arrow G is applied to the outside part of the ball chain 16 as indicated by arrow G. Since the room outer portion of the ball chain 16 is always in contact with the overhanging portion 57a of the gear plate 57, no sound is generated even if a force in the direction indicated by the arrow G is applied to the room outer portion of the ball chain 16. There is little need for noise reduction by the cushion member 58.

  Further, the upper wall 59a of the case cap 59 extends straight toward the front side, unlike the shape having a hanging part 59d that hangs down on the front side of the pulley 15 as shown in FIG. In other words, the opening in front of the pulley 15 extends to the horizontal upper wall 59 a of the case cap 59. In the embodiment shown in FIG. 5, since there is no such hanging part 59d, the ball 16a is less likely to collide with the upper wall 59a, and the generation of operation sound is further reduced.

  Further, the pulley 15 is provided with flanges 15a on both sides, which causes the ball chain 16 to shift in the width direction and cause sound generation, or the ball chain 16 contacts the case cap 59 to generate sound. Is prevented. As shown in FIG. 5B, the outer diameter of the flange 15a is preferably a size such that the outer periphery of the flange 15a is in contact with the outer peripheral shape 59c of the case cap 59 or fits in this shape.

  At the lower outlet of the pulley 15, a protruding portion 57 a provided on the gear plate 57 is provided outside the room of the pulley 15, and the ball chain 16 is guided to the inside of the room by this protruding portion 57 a. If the extent of the overhanging portion 57a is large, the ball chain 16 will be caught when pulled in the direction of arrow B, and the feeling of operation will not be good. In the present embodiment, the overhang at the overhang portion 57a is less than half the radius of the flange 15a. By adopting such a configuration, the operational feeling is improved. Further, since the overhanging portion 57a is provided, a gap D is formed between the lower front end 59e of the case cap 59 and the outdoor portion of the ball chain 16, so that the outdoor portion of the ball chain 16 contacts the screen 2. It is possible to prevent the screen 2 from being worn or the ball 16a from colliding with the lower front end 59e of the case cap 59 to generate sound. Further, the front end 59e is rounded to reduce the generation of sound when the ball 16a collides with the front end 59e.

The present invention can also be implemented in the following embodiments.
The present invention can also be applied to the case where the rotation direction of the drive shaft when the screen is lowered is opposite to the present embodiment (the direction from the outside to the inside), or the rotation directions of the two drive shafts are the same.
・ Pleated screen with lifting cord inserted in the center of the screen in the front-rear direction, single-type pleat screen with one screen, double-type pleat screen with two screens arranged in the front-rear direction, etc. It can also be applied to various types of pleated screens.
-It is applicable also to the various types of solar shading apparatus (For example, a horizontal blind, a raising curtain, a roll blind) which raises / lowers the solar shading material by rotating a pulley using an operation chain.

1: Head box 2: Upper screen 3: Intermediate rail 4: Lower screen 5: Bottom rail 6: First lifting cord 7: Second lifting cord 8: Support member 9: First winding shaft 10: Second winding shaft 11: first drive shaft 12: second drive shaft 13: operating device 15: pulley 16: ball chain 20: first transmission clutch 21: second transmission clutch 24: stopper device 36: governor device 37: intermediate limit device 38: Lower limit device 39: Pitch holding cord 43: Holding portion 51a, 51b: Pitch holding cord holding member 53a, 53b: Lifting cord holding member 57: Gear plate 58: Cushion member 59: Case cap

Claims (5)

An operation device for a solar shading device that operates an operation chain to raise and lower the solar shading material,
A pulley for hanging the operation chain, and a case for rotatably supporting the pulley,
The operation device of the solar radiation shielding device, wherein the case has an upper wall positioned above the pulley, and the upper wall extends straight forward without covering the pulley . An operation device for a solar shading device that operates an operation chain to raise and lower the solar shading material,
A pulley for hanging the operation chain, and a case for rotatably supporting the pulley,
The case has an upper wall located above the pulley,
The case includes an overhanging portion that guides the operation chain to the inside of the room on the outside of the pulley, and the pulley includes a flange on one side or both sides, and the overhang of the overhanging portion is half the radius of the flange. An operation device for a solar shading device, which is the following. The operating device according to claim 1, wherein a cushion member is provided on a lower surface of the upper wall. The said pulley is an operating device as described in any one of Claims 1-3 provided with a flange on both sides. An operation device for a solar shading device that operates an operation chain to raise and lower the solar shading material,
A pulley for hanging the operation chain, and a case for rotatably supporting the pulley,
The case has an upper wall located above the pulley, and includes a cushion member on the lower surface of the upper wall,
The cushion member is held by a cushion member holding portion provided on the upper wall,
The cushion member holding portion has an opening on the front end side of the upper wall,
The operation device of the solar radiation shielding device, wherein the cushion member is provided so as to be inserted into the opening and protrude from a front end of the upper wall.