JP2922808B2 - Screen winder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll screen for insect control,
The present invention relates to a roll screen winding device that is effective to be installed in a building opening as a light-shielding screen, a heat-insulating screen, or the like.

[0002]

2. Description of the Related Art A screen box having a roll screen, which is installed above a building opening such as a window or an entrance, is rotatably supported at both left and right ends, and has an opening at a lower portion for leading out the screen. And, inside, a pulley around which an operation cord for rotating the winding shaft is supported, and by the normal and reverse rotation of the winding shaft by the operation cord,
A screen winding device that includes a winding cartridge that enables unwinding or winding of the roll screen wound around the shaft, and that opens and closes the roll screen by manually pulling the operation string, for example, As disclosed in Japanese Patent Publication No. 3-55638, it is conventionally known.

[0003] In the screen winder of the prior proposal, when the screen winder is mounted on an opening of a building, the screen winder is operated in accordance with a user's request.
The take-up cartridge can be mounted on either the left or right side of the screen box. Therefore, the manufacturer prepares two types of products in which the take-up cartridges are arranged in advance on the right and left sides of the screen box in various sizes. This is advantageous in that there is no need.

However, when the take-up cartridge is attached to the end of the screen box, the take-up cartridge, which is asymmetrical on the left and right sides, is mounted upside down on the right and left sides of the screen box, as in the above-mentioned proposed screen take-up device. In this case, it is difficult to provide a locking member or the like for attachment to the screen box on the winding cartridge itself, so that the winding cartridge has to be fixed with a plurality of screws, and the screen winding device is required. When the number of constructions is relatively small, there is not much of a problem, but when the number of constructions is large, fixing the take-up cartridges with a plurality of screws at the work site significantly deteriorates workability.

Therefore, it is required to provide the take-up cartridge itself with some kind of locking member which can be easily and easily attached to the end of the screen box.
The take-up cartridge must be attached to the screen box with sufficient strength because the operating force at the time of manual feeding and winding is applied through the operation cord, and the take-up cartridge is fixed even when the screen is repeatedly opened and closed. State must be maintained.

[0006]

The technical problem of the present invention is that the take-up cartridge in the screen take-up device can be fixed to the left and right sides of the screen box by means of a simple locking member without using fixing screws. An object of the present invention is to provide a screen winding device which can be easily and firmly attached to any end. Another technical problem of the present invention is that, in the above-mentioned winding device, the winding cartridge can be mounted on the screen box on one mounting surface, whereby the mounting surface of the winding cartridge is provided with a member for mounting to the screen box. It is an object of the present invention to provide a screen winding device in which a stop member can be provided.

Still another technical problem of the present invention is that, in the above-mentioned winding device, both forward and reverse rotational forces acting on the pulley by the operating cord are transmitted to the winding shaft, but from the winding shaft side to the connecting shaft. A screen take-up device that has a clutch mechanism that does not transmit the rotating force acting in either the forward or reverse direction, and operates equally when the take-up cartridge is attached to either the left or right end of the screen box. Is to provide.

[0008]

A screen winding device according to the present invention for solving the above-mentioned problems basically has a roll screen winding shaft rotatably supported at both left and right ends, and the screen is provided at a lower portion thereof. A screen box having an opening for deriving the same, and a pulley around which an operation cord for rotating the winding shaft is supported, and the shaft is rotated by the operation cord in a forward / reverse direction. In a screen winding device including a winding cartridge capable of unwinding or winding a rolled roll screen, a locking member provided between the winding cartridge and a screen box is engaged with each other. The screen box can be attached to any of the left and right ends.

More specifically, the present invention relates to a box cap provided on each of the left and right ends of a screen box in the above-described screen winding device, wherein each of the box caps has a symmetrical partial arc shape around the center of the winding shaft. A stop groove is formed, and the take-up cartridge is symmetrical on both sides of a vertical axis orthogonal to the axis of the connection shaft connected to the take-up shaft. A substantially L-shaped locking projection is provided which is fitted and locked at the end of the locking groove which forms a partial arc by rotation of the cartridge, and both are provided between the box cap and the take-up cartridge. A detent means for holding the cartridge in the proper mounting position and suppressing rotation of the take-up cartridge is provided, and the take-up cartridge is raised by mutual engagement and locking between the locking projection and the locking groove. In any of the left and right ends of the screen box is characterized in that the attachable.

In the screen winding device, the locking projection of the winding cartridge and the partially arcuate locking grooves of the box caps at the left and right ends of the screen box are displaced from the positions where they are normally mounted. When the locking protrusion is fitted into the locking groove, the winding cartridge may be arranged in a positional relationship such that a part of the winding cartridge protrudes toward the mounting surface side of the screen box in the building. Between the pulley and the connection shaft connected to the take-up shaft in the take-up cartridge, rotational force in the forward and reverse directions acting on the pulley by the operation cord is transmitted to the connection shaft, but acts on the connection shaft from the take-up shaft side. It is possible to interpose a clutch mechanism for preventing the connection shaft from rotating in either the forward or reverse direction due to the rotating force.

[0011]

In the screen winding device having the above construction, the winding cartridge is symmetrical on both sides of a vertical axis perpendicular to the axis of the connecting shaft connected to the winding shaft. The take-up cartridge can be provided with a locking member for mounting so as to be mounted on the screen box on the mounting surface,
As a result, the take-up cartridge in the screen take-up device can be easily attached to any of the left and right ends of the screen box by using a locking member having a simple structure without using a fixing screw. .

In the above screen winding device, the locking projections provided on the winding cartridge are fitted into the locking grooves formed in the box caps at the left and right ends of the screen box. The take-up cartridge is mounted on the screen box by locking the locking protrusion at the end of the lock groove.In this case, the take-up cartridge is held at the proper mounting position and the rotation is performed. Since the rotation preventing means is provided, it is possible to firmly attach the take-up cartridge to the end of the screen box while using a locking member having a simple structure.

In particular, when the locking projection provided on the take-up cartridge is fitted into the lock groove of the box cap at a position deviated from the regular mounting position, a part of the take-up cartridge is attached to the screen box mounting wall in the building. When the locking projection and the locking groove are disposed in such a positional relationship as projecting to the side, the winding cartridge is not removed from the screen box in a state where the screen box is attached to the building opening, Therefore, the fixation of the take-up cartridge to the screen box becomes extremely stable.

Further, between the pulley of the winding cartridge and the connecting shaft connected to the winding shaft, the rotational force acting on the pulley by the operating cord in both the forward and reverse directions is transmitted to the connecting shaft. By interposing a clutch mechanism that prevents the connection shaft from rotating in either the forward or reverse direction due to the rotational force acting on the connection shaft from above, the take-up cartridge is moved by the clutch mechanism to the left or right end of the screen box. The same operation can be performed even when attached to a part.

[0015]

The drawings show an embodiment in which the screen winding device of the present invention is applied to an insect screen. As shown clearly in FIGS. 1 and 2, this insect screen door includes a screen box 1 attached to the upper part of the opening of the building, and box caps 2A, 2A,
One end of a screen 5 constituting an insect repelling net is attached to the winding shaft 3 rotatably supported by 2B, and the screen 5 is wound around the winding shaft 3 to form the box 1.
An opening 1a for leading out the screen 5 is provided at a lower portion of the screen 5, and a bottom bar 6 is attached to a leading end of the derived screen 5. The bottom bar 6 is a screen 5
When the screen 5 is pulled out of the box 1, the screen 5 is always given an appropriate tension so that the screen 5 has a weight that can be stretched over the opening of the building. The guide member 7 is guided by a rail member 8 of an aluminum guide rail 7 disposed along the guide rail.

In order to prevent the screen 5 from sagging in the width direction when the screen 5 is stretched, engaging members 10 are attached along left and right side edges, and the engaging members 10 are connected to the left and right rails. The inner rail 9 is engaged with the inner rail 9 movably fitted in the material 8. The engaging member 10 is formed by providing a large number of engaging members 10b which engage with the inner edge of the slit 9a of the inner rail 9 along one side edge of the tape 10a made of cloth or synthetic resin. Yes,
The other side edge of the tape 10a is connected to the screen 5. The engagement member 10 needs to be able to be wound up together with the screen 5, and for example, one of the halves of the slide fastener joined to each other or a member corresponding thereto can be used as it is.

At the left and right ends of the screen box 1, box caps 2A, 2 for supporting the winding shaft 3, as clearly shown in FIGS. 1, 4, 6 and 7, are provided.
B is attached by screws (not shown) inserted through the screw holes 11. These box caps 2A and 2B project a bearing portion 12 into which a shaft support portion 3a (see FIG. 1) of the winding shaft 3 is fitted inward, and have a symmetrical portion around the center of the winding shaft 3. A locking groove 13 having an arc shape is formed. This locking groove 13
At one end thereof, a locking end 13a for locking a locking projection 18 of the take-up cartridge 16 described later is provided.

The box caps 2A, 2B
Is formed in a square or rectangular shape in which one corner not in contact with the mounting surface with respect to the building is arc-shaped in accordance with the cross-sectional shape of the screen box 1 (see FIG. 2). On the other hand, in order to rotatably join a take-up cartridge 16 having an upper half portion formed in a rectangular disk shape and a lower half portion in a semicircular disk shape within a certain range required for attachment and detachment, the box caps 2A and 2B The lower half is formed in a shape that allows the semi-circular disc-shaped portion of the take-up cartridge 16 to abut. It is protruding. Therefore, when the take-up cartridge 16 is attached to the box caps 2A and 2B, the surface of the take-up cartridge 16 and the surface of the raised portion 14 are substantially in the same plane.

The take-up cartridge 16 enables the screen 5 wound around the take-up shaft 3 to be fed out or taken up by forward and reverse rotation of the take-up shaft 3 by an operation cord, and is attached to a box cap. The plurality of locking projections 18 provided on the surface are fitted to the locking grooves 13 of the box caps 2A and 2B.
Can be attached to any of the box caps 2A and 2B at both ends of the screen box 1. In the illustrated embodiment, the take-up cartridge 16 is attached to the right box cap 2B in FIG. The box cap 2A on the left side shows a state in which a decorative lid 17 having substantially the same shape as the take-up cartridge 16 is attached.

The configuration of the winding cartridge 16 will be described with reference to FIGS. 1, 4 and 5. The case 22 of the winding cartridge 16 has a rectangular upper half and a lower half of the winding cartridge 16. Square connection shaft 20 connected to take-off shaft 3
Are formed in a semicircular shape around the axis of the connecting shaft 20 so as to be bilaterally symmetrical on both sides of a vertical axis orthogonal to the axis of the connecting shaft 20. Therefore, as shown in FIGS. It is rotatable around the axis of the connecting shaft 20 connected to the take-off shaft 3 for attachment and detachment to and from the box caps 2A and 2B.

Inside the take-up cartridge 16, the bearing 2 is located around the axis of the connecting shaft 20.
2a, one end of a brake cylinder 23 is rotatably fitted into the bearing portion 22a, a clutch spring 25 is wound around the bearing portion 22a, and a winding shaft is wound around the bearing portion 22a. The pulley 26 around which the operation cord 27 for rotating the pulley 3 is wound is supported rotatably. One end of the square connection shaft 20 connected to the winding shaft 3 is removably inserted into a square hole of the winding shaft 3, and the other end is removably inserted into a square hole provided in the brake cylinder 23. It inserts and transmits rotation between both. The operation string 27
Can be formed by a ball chain or the like.

The clutch spring 25 wound around the bearing portion 22a is urged against the surface of the bearing portion 22a by being urged in the diameter reducing direction, and is bent at both ends of the clutch spring 25 so as to face each other. The formed pair of bent portions 25a
Between a pair of opposing convex walls 23a provided on the brake cylinder 23, they are located on both sides of an engaging convex portion 26a protruding from the pulley 26. These constitute the clutch mechanism,
Between the pulley 26 and the connecting shaft 20 connected to the winding shaft 3, the rotational force acting on the pulley 26 by the operation cord 27 in both the forward and reverse directions is transmitted to the connecting shaft 20 side, but the operating shaft 27 transmits the rotating force to the winding shaft 3 side. Thus, the rotational force acting on the connection shaft 20 prevents the connection shaft 20 from rotating in either the forward or reverse direction.

That is, in the clutch mechanism described above, when the pulley 26 is rotated in either direction by the operation cord 27, the engaging projections 26 a provided on the pulley 26 are engaged with the bent portions 25 a at both ends of the clutch spring 25. The clutch spring 25 engages with one of the clutch springs 25 and rotates the bent portion 25a in a direction in which the winding diameter of the clutch spring 25 increases. Therefore, the tightening force of the bearing portion 22a by the clutch spring 25 decreases, and the frictional force between the clutch spring 25 and the bearing portion 22a decreases,
The pulley 26 is fixed to the brake cylinder 2 by the engagement convex portion 26a.
3 rotates while pressing the one convex wall 23 a, and the rotation is transmitted to the winding shaft 3 via the connecting shaft 20.

However, the rotation of the winding shaft 3 due to an external force or the like acting on the screen 5 is not transmitted to the pulley 26 by the clutch mechanism. That is, even if the rotational force acting on the connecting shaft 20 from the winding shaft 3 side presses the bent portion 25a of the clutch spring 25 via the convex wall 23a of the brake cylinder 23, the rotational force is always the same. The clutch spring 25 acts on the curved portion 25a in a direction in which the winding diameter of the clutch spring 25 is reduced, so that the clutch spring 25 strongly presses against the surface of the bearing portion 22a to prevent the rotation of the engagement convex portion 26a on the pulley 26. As a result, transmission of rotation to the pulley 26 is suppressed.

As clearly shown in FIGS. 1 and 4, a cover 30 is attached to the case 22 of the take-up cartridge 16 so that the cover 30 can be attached to the case 22 by screws inserted into the case 22 through the screw holes 31. . The cover 30 is provided with the substantially L-shaped locking projection 18 that fits into the locking groove 13 of the box caps 2A and 2B and locks with the locking end 13a of the locking groove 13. is there.

The locking projection 18 provided on the cover 30
The take-up cartridge 16 has the box caps 2A, 2B
(FIGS. 9 and 10)
When the take-up cartridge 16 is inserted into the locking groove 13 having a partial arc shape and is moved to the regular mounting position by the rotation of the take-up cartridge 16, the take-up cartridge 16 is attached to the box caps 2A and 2B. Exactly overlap,
The locking projection 18 locks to the locking end 13 a of the locking groove 13. After the take-up cartridge 16 is attached to the box caps 2A and 2B, it is necessary to always hold the take-up cartridge 16 at the proper attachment position with respect to the box caps 2A and 2B. And a detent means for suppressing the rotation of the take-up cartridge 16 by holding the cartridge.

As the detent means, a projection 33 is provided on the outer surface of the cover 30 of the winding cartridge 16,
Take up the cartridge 16 on the box caps 2A and 2B.
Small hole 3 into which the projection 33 is fitted at the regular mounting position
4 are provided. If the take-up cartridge 16 is not sufficiently fixed by the protrusion 33 and the small hole 34,
A screw hole 35 for preventing rotation is formed in the case 22 of the winding cartridge, and the screen box 1 is inserted therethrough.
The screw 36 (see FIG. 1) can be stably fixed. The screw 36 is used to fix the take-up cartridge 16 in a preliminary manner so that the take-up cartridge 16 does not rotate and deviate from the proper mounting position with respect to the box caps 2A and 2B.
Is not intended to be fixed to the screen box 1, and therefore, when the protrusion 33 and the small hole 34 sufficiently prevent the winding cartridge 16 from rotating, it can be omitted.

As shown in FIG. 9 and FIG. 10, the locking projection 18 of the take-up cartridge 16 is provided with a partially arcuate locking of the box caps 2A and 2B of the screen box 1, as shown in FIGS. At the time of fitting into the groove 13 at a position deviated from the regular mounting position of the two (a broken line position of the take-up cartridge), a part of the take-up cartridge is projected to the mounting wall W side of the screen box in the building, By arranging the locking projection 18 and the locking groove 13 in such a positional relationship, the above detent means can be formed.
In this case, if the take-up cartridge 16 is fixed to the box caps 2A and 2B before the screen box 1 is fixed to the mounting wall W, the fixation can be easily performed by only slightly rotating the take-up cartridge. After the screen box 1 is mounted on the mounting wall surface W, the winding wall 16 does not come off due to the wall surface W becoming an obstacle.

The decorative lid 17 is used for the take-up cartridge 1
6 and has a box shape so as to have substantially the same appearance as that of the winding cartridge 16 as shown in FIGS. 1 and 7 with respect to the locking grooves 13 of the box caps 2A and 2B. And a locking projection 41 for locking the box cap 2A,
A protrusion 43 is provided to fit into the small hole 34 provided in 2B. The decorative lid 17 is attached to the box cap on the side where the take-up cartridge 16 is not attached, to keep the appearance of the screen take-up device good.

In the screen winding device having the above configuration, since the winding cartridge 16 is symmetrical on both sides of the vertical axis, the winding cartridge 16
Can be always attached to the clean box 1 with the cover 30 side as an attachment surface, and the cover 30 of the take-up cartridge 16 can be provided with an attachment locking member. As a result, in the screen take-up device, The take-up cartridge 16 can be moved without using fixing screws.
The locking member having a simple structure allows the screen box 1 to be easily attached to either the left or right end.

In the above-described screen winding device, the locking projections 18 provided on the winding cartridge 16 are fitted into the locking grooves 13 formed in the box caps 2A and 2B at the left and right ends of the screen box 1. The winding cartridge 16 is attached to the screen box 1 by locking the locking projection 18 to the locking end 13a of the locking groove 13 by rotating the cartridge 16. Since the take-up cartridge 16 is provided with a detent means for holding the take-up cartridge 16 at the proper mounting position and suppressing its rotation, the take-up cartridge 16 is attached to the end of the screen box 1 while using a locking member having a simple structure. It becomes possible to attach firmly.

In particular, when the locking projection 18 provided on the take-up cartridge 16 is fitted into the locking groove 13 of the box caps 2A and 2B at a position shifted from the regular mounting position,
When the locking projections 18 and the locking grooves 13 are provided in a positional relationship such that a part of the take-up cartridge 16 protrudes toward the mounting wall W of the screen box 1 in the building, the screen box 1 is dismounted. In the state where the take-up cartridge is attached to the opening of the building, the take-up cartridge is not removed from the screen box 1, so that the fixation of the take-up cartridge 16 to the screen box 1 becomes extremely stable.

Further, between the pulley 26 of the take-up cartridge 16 and the connecting shaft 20 connected to the take-up shaft 3, both forward and reverse rotational forces acting on the pulley 26 by the operation cord 27 are transmitted to the connecting shaft 20. However, since a clutch mechanism that prevents the connecting shaft 20 from rotating in either the forward or reverse direction due to the rotational force acting on the connecting shaft 20 from the winding shaft 3 side is interposed, the clutch mechanism is used. The same operation can be performed when the take-up cartridge 16 is attached to either the left or right end of the screen box 1.

[0034]

As described above, according to the screen winding device of the present invention, the winding cartridge in the screen winding device can always be mounted on the screen box with the same mounting surface, so that fixing screws are used. By providing a locking member having a simple structure on the mounting surface, the screen box can be easily and firmly mounted on any of the left and right ends of the screen box, thereby further improving workability. it can.

[Brief description of the drawings]

FIG. 1 is a partially broken front view showing an embodiment of a screen winding device of the present invention.

FIG. 2 is a side sectional view of the embodiment.

FIG. 3 is a side view of the embodiment.

FIG. 4 is an exploded perspective view of a main part of a box cap, a winding cartridge, and a decorative lid in the screen winding device of the embodiment.

FIG. 5 is a cross-sectional view illustrating a configuration of a clutch mechanism in the take-up cartridge according to the embodiment.

FIG. 6 is a front view of the box cap in the embodiment.

FIG. 7 is a plan view of the same.

FIG. 8 is a rear view of the decorative lid according to the embodiment.

9 is an explanatory diagram for explaining a state in which a take-up cartridge is attached to a box cap on the left end in the screen take-up device in FIG. 1;

FIG. 10 is an explanatory diagram for explaining a state in which the take-up cartridge is attached to the box cap on the right end.

[Explanation of symbols]

 Reference Signs List 1 screen box 1a opening 2A, 2B box cap 3 winding shaft 5 roll screen 13 locking groove 13a locking end 16 winding cartridge 18 locking projection 20 connecting shaft 26 pulley 27 operating cord

Claims (3)

(57) [Claims] 1. A screen box rotatably supporting a winding shaft of a roll screen at both left and right ends and having an opening at a lower portion for leading the screen, and an operation for rotating the winding shaft inside the box. A winding cartridge that supports a pulley around which a string is wound, and enables a roll screen wound around the axis to be fed or wound by forward and reverse rotation of the winding axis by the operating string. In each of the box caps provided at the left and right ends of the screen box, locking grooves each forming a symmetrical partial arc around the center of the winding shaft are formed, and the winding cartridge is wound around the winding shaft. The left and right sides of the vertical axis perpendicular to the axis of the connecting shaft are connected to the axis of the connecting shaft. And a substantially L-shaped engaging projection which is engaged with the end of the engaging groove which forms a partial arc by rotation of the cartridge to the regular mounting position. A detent means for holding the two in the proper mounting position and suppressing the rotation of the take-up cartridge is provided between the two. Wherein the screen box can be attached to any of the left and right ends of the screen box. 2. The screen winding device according to claim 1, wherein the locking projections of the winding cartridge and the partially arcuate locking grooves of the box caps on the left and right ends of the screen box are properly mounted. When the locking projection is fitted into the locking groove at a position deviated from the position, the winding cartridge is arranged in a positional relationship such that a part of the winding cartridge protrudes toward the screen box mounting surface side of the building. A screen winding device. 3. The screen winding device according to claim 1, wherein the operating cord acts on the pulley between the pulley of the winding cartridge and the connecting shaft connected to the winding shaft in both forward and reverse directions. A screen, wherein a clutch mechanism that transmits to the connecting shaft but prevents rotation of the connecting shaft in both forward and reverse directions due to a rotational force acting on the connecting shaft from the winding shaft side is provided. Winding device.