JP6101119B2 - Manual elevating roll screen device that enables automatic lowering - Google Patents

Description

  The present invention relates to a manually elevating roll screen device, and more specifically, a manual elevating type having a simple configuration in which the roll screen is manually moved up and down to vertically move the roll screen. However, the present invention relates to a roll screen device that enables automatic lowering of the roll screen.

  Without using the coil spring provided in the winding shaft as a drive source for winding the screen, the screen winding shaft supported rotatably in the winding box is connected to the shaft end of the winding shaft. A manual elevating type roll screen device in which a ball chain or the like is wound around an attached sprocket and rotated by its manual operation so that the screen is manually opened and closed is not limited to a publicly known document or the like. It is already known as a simpler configuration.

  In this type of manual elevating roll screen device, when winding the screen around the winding shaft, one end of the ball chain wound around the sprocket is manually pulled, and when the screen is extended, It is necessary to pull the end side manually. Therefore, not only is it troublesome to select and pull the end of the ball chain, but if you pull the end of the ball chain incorrectly, the screen will be wound around the take-up shaft and entangled or damaged. Therefore, it is desired that the roll screen apparatus having a simple configuration of a manual lifting type can be easily lifted and pulled without making a mistake in the end of the ball chain.

The technical problem of the present invention is that it is possible to lift and lower the screen more easily even with a roll screen device of a simple structure of manual lifting type, and in particular, only by operating the ball chain on the drawing side for winding the screen. In a manual lifting roll screen device that can be lifted and lowered without making a mistake in the end of the ball chain, the screen is automatically lowered by operating the ball chain on the pulling side for winding the screen. It is another object of the present invention to provide a manual elevating roll screen device that enables the screen to be stably held at an arbitrary opening.

In order to solve the above problems, according to the present invention, a winding shaft for winding a screen is rotatably supported in a winding box, and a large number of ball members are respectively attached to sprockets attached to the shaft end of the winding shaft. A ball chain constructed by flexibly connecting with a connecting strip is wound, and the winding shaft is rotated through the sprocket by manual operation of the ball chain led out from the winding box, and is movable to the tip. Install the rungs a manual elevating roll screen apparatus designed to open and close the screen suspended from from the winding shaft, is disposed on the side to draw the ball chain from the sprocket to the winding of the screen a chain guide, the movement of the pull-out direction of the ball chain is not limited, in the direction of introduction into the sprocket side , An open passage through which the ball chain is freely introduced and a closed passage through which the ball member is locked to the slit edge to prevent movement are formed according to the direction in which the ball chain extends from the chain guide, the aforementioned movable crosspiece, the ball chain in the manual elevating roll screen apparatus make myself lifting the weight to rotate the winding shaft in a direction to stretched screen when in the open passage of the chain guide, the screen stretched Therefore, on the side where the ball chain is withdrawn from the sprocket, the sprocket chain is provided with a restraining piece that prevents the ball member in the ball chain to be withdrawn from being drawn into the introduction side of the ball chain as the sprocket rotates. Attached to the chain guide so that it protrudes into the receiving groove. Manually elevating roll screen apparatus capable of automatic descent which is characterized is provided.

  In a preferred embodiment of the manually elevating roll screen device according to the present invention, the chain guide has an inclined internal passage that allows movement in the drawing direction of the ball chain and its reverse direction to the sprocket side. The slit having the slit edge is open to the side of the inclined internal passage so that the ball member of the ball chain in the hanging state is engaged, and by passing the connecting strip of the ball chain through the slit, The slit edge is configured to be engaged with the ball member to prevent the ball chain from moving in the introduction direction.

  In a preferred embodiment of the manually elevating roll screen device of the present invention, the slit is provided in an inclined guide surface forming an inclined internal passage of the chain guide, and the ball chain is pulled out from the chain guide. Is moved by guiding the ball member along the inclined guide surface, and the reverse movement of the ball chain is such that the connecting strip of the ball chain does not pass through the slit of the inclined guide surface. The ball chain is formed so as to perform the movement in the reverse direction only when it is directed to.

  In the manually elevating roll screen device provided with the above chain guide, when the operation side of the ball chain moves in the direction of being pulled through the chain guide to the sprocket side in the winding box, that is, the screen in the winding state is rewound. When the ball chain is pulled by the chain guide and held in such a range that it cannot be rewound by a certain amount or more, the ball chain can be The operator selects either the open passage freely introduced to the sprocket side or the closed passage where the ball member is locked to the slit edge and prevented from moving to the sprocket side. There is a need.

In a preferred embodiment of the manual lifting roll screen apparatus according to the present invention, one end of the screen winding shaft is rotatably supported by a winding box, and the other shaft end of the winding shaft is interposed via an oil damper. The one-way clutch can be attached to the oil damper so that it functions only when the screen is extended.

The winding shaft for winding a scan clean is rotatably supported in the winding box, the take-up shaft is rotated by a manual operation of the ball chain, open and close the screen suspended from attach the movable crosspiece in the tip manually in the manual elevating roll screen apparatus designed to the lower screen of the is stretched by the weight of the movable crosspieces provided with screens at the tip, increases the rotational speed of the winding shaft is gradually like movable crosspiece building opening or shocked by colliding with the frame or the like, likely to there Ru or generate a large collision noise. When it is necessary to suppress this, one end of the winding shaft of the screen is rotatably supported by a winding box, and the other shaft end of the winding shaft is attached to the winding box via an oil damper. it Re was supported but, by attaching a said one-way clutch in the oil damper can avoid requiring a large force more than necessary to the operation at the time of winding up.

According to the manual lifting roll screen device of the present invention described in detail above, it is possible to easily lift and lower the screen even though it is a roll lifting device with a simple configuration of manual lifting. In a manually elevating roll screen device that allows the screen to be lifted and lowered only by operating the ball chain on the pulling side for picking up and pulling the end of the ball chain without making a mistake, pulling out the screen for winding up the screen It is possible to provide a manual elevating roll screen device that enables automatic lowering of the screen by operation of the side ball chain and that can be operated so that the screen can be stably held at an arbitrary opening degree. .

It is a partially broken side sectional view showing an example of a manual elevating roll screen device according to the present invention. It is the same partially broken side sectional view which shows the state which dropped the movable crosspiece of the Example and stretched the screen. It is a front view which shows the principal part of the Example by a cross section. It is a perspective view which shows the structure of the winding shaft drive unit which attaches to the edge part of the winding box in the Example, and rotates a winding shaft. (A) And (B) is the perspective view which looked at the chain guide provided in the ball chain derivation | leading-out part of the said winding shaft drive unit from the different direction. It is an operation explanatory view of the chain guide. It is principal part explanatory drawing which shows the positional relationship of the sprocket which winds a ball chain in the said winding shaft drive unit, and the said chain guide. It is a perspective view which shows the state which provided the said chain guide in the supporting member for guides arrange | positioned separately from the said winding box.

  1 to 4 show an example of an embodiment of a manual elevating roll screen device that enables automatic lowering according to the present invention. This manual elevating roll screen device is basically constructed as a roll screen device having a simple manual elevating type operation by operating the ball chain 10, but the ball in the winding box 1 described in detail below. By providing a chain guide 15 having a simple configuration at the lead-out portion of the chain 10, the screen 3 can be moved up and down only by operating the ball chain 10 on the pull-out side for winding the screen 3, so that the end of the ball chain 10 In addition to allowing the screen 3 to be automatically lowered by the operation of the ball chain 10, the screen 3 can be stably held at an arbitrary opening degree. It is.

  The configuration of the roll screen device will be described in detail. A winding box 1 in which a winding shaft 2 around which the screen 3 is wound is rotatably supported is positioned below the winding shaft 2, Winding shafts as shown in FIGS. 2 to 4 are provided with lead-out ports 5 for leading the screen 3 wound around the winding shaft 2 downward, and at both ends in the axial direction of the winding box 1. The drive unit 7 is configured to be selectively attachable so that the opening / closing operation of the screen 3 by the ball chain 10 can be performed on either the left or right side of the winding box 1. In FIG. 3, a dummy 7 </ b> A is attached to the other end side of the winding box 1.

  The take-up shaft drive unit 7 rotatably accommodates a sprocket 9 attached so as to rotate integrally with the shaft end of the take-up shaft 2 in a case 8, and a ball chain 10 wound around the sprocket 9 The chain 8 is led out through a chain guide 15 and the like described later, and the winding shaft 2 is rotated via the sprocket 9 by manual operation of the ball chain 10. It is made to attach to the edge part of the winding box 1 with a screw. Depending on whether the winding shaft drive unit 7 itself is attached to which end of the winding box 1, the internal structure is rearranged in a form suitable for attachment to the end, or each end of the winding box 1. It is possible to separately provide a configuration suitable for mounting to the winding box 1 and to select a winding shaft drive unit 7 suitable for the mounting end of the winding box 1 and to mount it on the mounting end.

  In addition, without attaching the winding shaft drive unit 7 described above to the winding box 1, the winding box 1 itself is integrated with both ends corresponding to the case 8. Inside, the sprocket 9 attached to the shaft end of the winding shaft 2 is rotatably supported and can be accommodated, and is wound around the sprocket 9 accommodated on one end side of the winding box 1. The ball chain 10 may be configured to be led out to the outside through the chain guide 15, and with such a configuration, the right and left hand of the lifting operation of the screen 3 can be changed.

  The ball chain 10 is configured by flexibly connecting a large number of ball members 11 with connecting strips 12 at regular intervals, and the connecting strips 12 are chain guides 15 described in detail below. The ball member 11 is formed in such a size as to be locked to the slit edge 25a. The ball member 11 and the connecting strip 12 may be a hard material such as metal or synthetic resin. However, the ball member 11 and the connecting strip 12 are formed into a flexible chain as a whole by inserting a flexible wire through them. be able to. Moreover, although the said ball chain 10 is formed in the endless loop shape by connecting both ends by the end part connection tools 13 and 13A as shown in FIGS. 1-4 and FIG. 6, it is not necessarily endless. There is no need. The end connector 13 shown in FIG. 1 to FIG. 4 is such that children pass over the loop-shaped ball chain 10 formed thereby to hook a part of the body, etc. When a tension of a certain value or more is applied to the chain 10, the end connector 13 itself is divided into two parts so that damage and danger can be avoided.

  Further, as the screen 3, an appropriate screen can be used according to the purpose of use such as shading, blindfolding, heat insulation, insect repellent, decoration, etc. A movable bar 14 is attached to the tip of the screen 3 and suspended from the winding shaft 2. The screen 3 is extended, but here, when the force in the direction of winding the screen 3 does not act on the ball chain 10 or the movement of the ball chain 10 is not restricted by the chain guide 15 or the like. In order to rotate the take-up shaft 2 in the direction in which the screen 3 is extended by the gravity of the movable bar 14, the movable bar 14 has a weight necessary for it. Note that the left and right ends of the movable bar 14 and the screen 3 are guided to rise and fall by side frames 4 provided on both sides thereof.

Next, a specific configuration and operation of the chain guide 15 will be described.
As can be seen from FIGS. 1 and 2, in the winding shaft drive unit 7, the function of the chain guide 15 disposed on the side of the chain passage 22 that draws the ball chain 10 from the sprocket 9 when winding the screen 3 is basically Specifically, the movement of the ball chain 10 in the pulling-out direction from the chain passage 22 is not limited at all, but the introduction direction to the sprocket 9 side depends on the direction in which the ball chain 10 extends from the chain guide 15. An internal passage 20 serving as an open passage through which the ball chain 10 is freely introduced, and a closed passage 21 in which the ball member 11 is locked to a slit 25 provided in the chain guide 15 and prevented from moving are formed. Is.

  In the embodiment shown in FIGS. 1 to 4 and the like, the chain guide 15 is illustrated as being attached to the case 8 of the take-up shaft drive unit 7 provided at the end in the axial direction of the take-up box 1. As is apparent from the above, it can be directly attached to the end of the winding box 1 in the axial direction, and as will be described later with reference to FIG. 8, it is attached to the case of the guide support member 7B. It can be used even if attached. When the chain guide 15 is attached to any of the above-described members, the attachment surface of the chain guide 15 itself includes a claw portion 18a that is pushed into and locked into a locking portion 17a provided on the attachment target surface, and the attachment target. The locking groove 17b provided on the surface is provided with a locking projection 18b to be locked by press-fitting or sliding from the side, and the mounting surface 17a and the locking groove 17b having the same shape are provided on each mounting target surface. The chain guide 15 is preferably formed so as to be attachable to any attachment target surface.

  Further, as can be seen from FIG. 2, the chain guide 15 is provided on the lower surface of the case 8 of the take-up shaft drive unit 7 on the side of the chain passage 22 where the ball chain 10 is drawn from the sprocket 9 for taking up the screen 3. An internal passage 20 that is inclined by an inclined guide surface 24 is formed in the chain guide 15 so as to lead out the ball chain 10 to the outside through the chain guide 15. 20 and the chain passage 22 opened on the lower surface of the case 8 of the take-up shaft drive unit 7 communicate with each other so as not to obstruct the movement of the ball chain 10.

The attachment position of the chain guide 15 is the same when attaching it directly to the end of the winding box 1 or when attaching it to the guide support member 7B of FIG.
In addition, on the lower surface of the case 8, the insertion hole 23 of the ball chain 10 may be simply provided in the case 8 on the side where the ball chain 10 is introduced toward the sprocket 9 when the screen 3 is wound up. In the guide support member 7B of FIG. 8, the ball chain 10 on the side introduced toward the sprocket 9 does not necessarily have to pass through the guide support member 7B.

  As shown in FIGS. 1, 2, and 5 (A) and 5 (B), the chain guide 15 itself is pulled out from the ball chain 10 and vice versa. An inclined internal passage 20 is formed on the inclined guide surface 24 as the open passage. The inclined guide surface 24 of the chain guide 15 is provided with a slit 25 that opens toward the lower side of the inclined internal passage 20. The width of the slit 25 is the width of the ball member 11 of the ball chain 10. Therefore, the movement of the ball chain 10 in the pulling direction from the chain guide 15 is smoothly performed by the guidance of the ball member 11 along the inclined guide surface 24.

  On the other hand, the movement of the ball chain 10 in the direction of introduction toward the side of the chain passage 22 opposite to the pulling direction of the ball chain 10 is caused by the slit 25 of the inclined guide surface 24 to hang down from the inclined guide surface 24. Since the ball member 11 is opened on the side of the inclined internal passage 20 so that the ball member 11 is engaged, when the connecting strip 12 of the ball chain 10 is passed through the slit 25, the slit edge 25a is formed on the ball member. 11, that is, the movement of the ball chain 10 in the introduction direction toward the sprocket 9 in the closed passage 21 is prevented.

  However, when the ball chain 10 is moved, when the ball chain is directed in a direction in which the connecting strip 12 of the ball chain 10 does not pass through the slit 25 of the inclined guide surface 24, that is, the connecting strip 12 is slit. When the operator adjusts the direction of the ball chain 10 led out from the chain guide 15 so as to pass on the inclined guide surface 24 without going to 25, the ball chain 10 moves in the reverse direction. If the operator pulls out the ball chain 10 while adjusting the orientation of the ball chain 10, the screen expands due to the gravity of the movable bar 14 acting on the screen 3. It is paid out in the direction.

  Such an operation of the ball chain 10 is performed when the screen 3 in a wound state is stretched by rewinding or the ball chain 10 is pulled into the chain guide 15 within a range in which the screen 3 is not unwound more than a certain amount. When the screen 3 is held at a desired opening, the ball chain 10 can be freely introduced to the sprocket 9 side by the orientation in which the ball chain 10 extends from the chain guide 15 and the slit edge. When the operator selects which of the closed passage where the ball member is locked and the movement toward the sprocket is prevented, the selection can be easily performed. .

  The direction of the extension of the ball chain 10 from the chain guide 15 is such that, as the chain guide 15 is further away from the operation position of the ball chain 10, for example, When the screen device is installed in a relatively low position window or the like that can be reached by humans, it is difficult to operate the device as in the above embodiment. In addition, the chain guide 15 may be disposed in the winding box itself. However, when the screen device is installed in the above-mentioned high-level window or the like, the guide support member as shown in FIG. It is desirable to use 7B and arrange it at a position close to the operator below the winding box 1 separately from the winding box.

  In this case, without providing the chain guide 15 in the winding box 1, the ball chain 10 is directly led out from the chain passage 22 that opens on the lower surface of the case 8 of the winding shaft drive unit 7, and then is used as a guide. The ball chain 10 is led out through the internal passage 20 of the chain guide 15 provided through the support member 7B and provided in the lead-out port of the ball chain 10 in the guide support member 7B. Thereby, the arrangement position of the chain guide 15 can be selected.

  In the screen device, the ball chain 10 is wound by the gravity of the movable bar 14 provided at the tip of the screen 3 on the side of the insertion hole 23 where the ball chain 10 is pulled out from the sprocket 9 in the case 8 for the expansion of the screen 3. Since the shaft 2 rotates, as can be seen from FIG. 6, the ball member 11 of the ball chain 10 to be pulled out is fitted in the chain receiving groove 9 a of the sprocket 9 as the sprocket 9 rotates. There is a possibility that troubles such as stopping the rotation of the sprocket 9 may occur due to being drawn into the side of the chain passage 22 that opens to the lower surface of FIG. In order to suppress this trouble, as shown clearly in FIGS. 5 and 7, the chain guide 15 is integrally provided with a suppression piece 27 protruding into the chain receiving groove 9 a of the sprocket 9. Thereby, it is possible to prevent the ball member 11 of the ball chain 10 from being pulled into the chain passage 22 side of the case 8 while being fitted in the chain receiving groove 9 a of the sprocket 9.

  Further, in the above screen device, the screen 3 is extended by the weight of the movable bar 14 provided at the tip thereof. In this case, the rotational speed of the winding shaft 2 gradually increases, and the movable bar 14 becomes a building opening or the like. May collide with the screen frame or the like at the bottom of the screen and give a large impact, or generate a large collision sound. In order to suppress this, one end of the winding shaft 2 of the screen 3 is rotatably supported by the winding box 1, and the other shaft end of the winding shaft 2 is connected to the winding via an oil damper 30. The box 1 may be fixedly supported.

  If the oil damper 30 is simply interposed between the winding shaft 2 and the winding box 1, not only when the screen 3 is stretched but also when the screen is wound up, the oil damper 30 cushions the ball chain 10. To avoid this, a one-way clutch is attached to the oil damper 30 so that the oil damper 30 functions only when the screen 3 is extended. That's fine. When the right and left hand of the lifting operation of the screen 3 is changed by changing the mounting position of the winding shaft drive unit 7 at the shaft end of the winding shaft 2 to the other end side, the oil damper is used when the screen 3 is expanded. 30 must be formed to function.

  Further, in the above screen device, when the screen 3 is wound around the winding shaft 2 in the winding box 1, in order to maintain the winding state, as shown in FIG. 11 is required to be locked by the slit 25 of the inclined guide surface 24 of the chain guide 15. When the ball member 11 is locked to the slit 25, the ball member comes into contact with the slit edge 25a. By the time, the ball chain 10 is moved by the maximum length obtained by subtracting the thickness of the inclined guide surface 24 of the chain guide 15 from the length of the connecting strip 12 in the ball chain 10. The movement of the ball chain 10 is to lower the movable beam 14 by the length from the ascending position of the movable beam 14 indicated by the chain line in FIG. 1, and the movable beam 14 hits the lower surface of the winding box 1. If it is in a position where it comes into contact, a gap is formed between the winding box 1 and the movable bar 14 attached to the screen 3 by that distance, and the appearance may become unsightly.

  In order to avoid the occurrence of this gap, in the winding box 1, a part of the movable beam 14 at the lower end of the screen 3 is placed in the outlet 5 for leading the screen 3 downward when the screen 3 is wound. A recess 32 that allows insertion is provided, and a portion where the movable beam 14 abuts around the outlet port 5 is provided. The movable beam 14 contacts the portion and the movable beam 14 is in the recess 32. An abutting portion 14a is provided for preventing complete immersion. The depth at which the movable bar 14 can be fitted into the recess 32 by the corresponding contact portion 14a is at least from the length of the connecting strip 12 between the ball members 11 in the ball chain 10, and the inclined guide surface 24 of the chain guide 15. It is necessary to make the portion larger than the length obtained by reducing the thickness. Further, since the movable bar 14 is provided with the contact portion 14a, the lower end portion thereof does not enter the recess 32.

DESCRIPTION OF SYMBOLS 1 Winding box 2 Winding shaft 3 Screen 7 Winding shaft drive unit 9 Sprocket 10 Ball chain 11 Ball member 12 Connection strip 15 Chain guide 20 Internal passage (open passage)
21 Closed passage

Claims (4)

A winding shaft for winding a screen is rotatably supported in a winding box, and a plurality of ball members are flexibly connected to sprockets attached to the shaft end of the winding shaft by connecting strips. The above-mentioned ball chain is wound around and wound around the winding shaft by rotating the winding shaft via the sprocket by manual operation of the ball chain led out from the winding box and attaching a movable bar to the tip. A manual lifting roll screen device that opens and closes the screen ,
The chain guide which is arranged on the side to draw the ball chain from the sprocket to the winding of the screen, is moved in the pull-out direction of the ball chain is not limited, in the direction of introduction into the sprocket side, the ball chain Depending on the direction in which the ball chain extends from the chain guide, an open passage in which the ball chain is freely introduced and a closed passage in which the ball member is locked to the slit edge to prevent movement are formed,
The aforementioned movable crosspieces, in the manual elevating roll screen apparatus make myself lifting the weight to rotate the winding shaft in a direction to stretched screen when the ball chain is in the open passage of the chain guide,
On the side where the ball chain is pulled out from the sprocket for extending the screen, a restraining piece that prevents the ball member in the ball chain to be pulled out from being pulled into the introduction side of the ball chain as the sprocket rotates. Is attached to the chain guide so as to protrude into the chain receiving groove of the sprocket.
A manual elevating type roll screen device that enables automatic lowering. The chain guide has an inclined internal passage that allows movement in the drawing direction of the ball chain and the direction of introduction to the opposite sprocket side, and the slit having the slit edge of the ball chain in a suspended state. The ball member is opened to the inclined inner passage side so that the ball member is engaged. By passing the connecting strip of the ball chain through the slit, the slit edge engages with the ball member and moves in the introduction direction. Configured to prevent the movement of the ball chain,
2. The manual elevating roll screen device capable of automatic lowering according to claim 1. The slit is provided in an inclined guide surface that forms an inclined internal passage of the chain guide, and movement of the ball chain in the pulling direction from the chain guide is performed by guiding the ball member along the inclined guide surface. Formed as
The movement of the ball chain in the reverse direction is formed so that the ball chain moves in the reverse direction only when it is directed in a direction in which the connecting strip of the ball chain does not pass through the slit of the inclined guide surface. Being
The manual elevating roll screen device capable of automatic lowering according to claim 2. One end of the screen winding shaft is rotatably supported by a winding box, and the other shaft end of the winding shaft is supported by the winding box via an oil damper, and the screen is extended to the oil damper. manual elevating roll screen apparatus capable of automatic drop according to any of claims 1 to 3, characterized in that attaching a one-way clutch so that only the it to function when.

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