JP2001040966A - Winding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the operating force required for opening or closing a screen or a shutter by connecting an unrotatable fixed member in a tube body and a rotating force transmitting means connected to the tube body with a helical coil spring. SOLUTION: A fixed member 3 is made unrotatable by being fitted to a support section 5 with fixing tools 6 such as screws. A tube body 2 and a rotating force transmitting means 4 are connected together by fixing tools such as screws 8. Both end sections of a helical coil spring 10 are bent as hook sections 11, and the hook sections 11 are hooked on locking members 12 such as fixing pins provided on the rotating force transmitting means 4. When the tube body 2 is rotated via the rotating force transmitting means 4 for winding or delivering an opening/closing member, the helical coil spring 10 is fastened to generate torque, and the torque supplements the moment of the opening/ closing member to keep balance, thereby the operating force can be reduced. This device is particularly effective for a roller shutter.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding device applied to a device for opening and closing an opening or the like such as a so-called roller screen or roller shutter. More specifically, the invention of this application relates to a winding device which is effective for opening and closing members such as a screen and a shutter and is particularly effective for a roller shutter.

[0002]

2. Description of the Related Art As an opening / closing device attached to an opening such as a window frame or a garage doorway, a device called a roller screen or a roller shutter is known. In these devices, an opening / closing member such as a screen and a shutter that opens and closes an opening and the like is wound around a cylindrical body and pulled out from the cylindrical body. In order to realize winding and drawing of such an opening / closing member, a winding device is incorporated in a roller screen, a roller shutter, or the like.

[0003] Various drive systems have been provided for the winding device. Among them, the worm gear drive system is known as a general drive system for the roller shutter.

In this worm gear drive system, the crankshaft is manually rotated, and the cylinder is rotated in conjunction therewith. The opening / closing member is prevented from spontaneously falling due to the internal friction of the worm gear.However, the worm gear drive system requires an operating force corresponding to the internal friction of the worm gear, and the response during operation is heavy. There is a drawback that you can feel it. In addition, consideration must be given to the failure of the mechanism.

When the opening / closing member is a relatively lightweight shutter or screen, a pulley drive system is often used for the winding device. In this pulley drive system, the operation cord is manually operated to rotate the pulley, and the cylinder is rotated in conjunction with the pulley. However, the pulley drive method has a drawback that the operating force when raising and lowering the opening / closing member fluctuates greatly. This is due to the fact that the moment when the opening / closing member is wound up or pulled out of the cylindrical body is not constant, and also due to the necessity of applying an operating force corresponding to the moment of the opening / closing member.

[0006] In addition, an electric motor drive type winding device is also known, but in the electric motor drive type, the motor torque when winding the opening / closing member generally has its maximum value in consideration of the moment of the opening / closing member. It is set larger than the value. From the viewpoint of energy efficiency, the motor torque generated by the electric motor is wasteful.

The invention of this application has been made in view of the circumstances described above, and solves the drawbacks of the conventional winding device and reduces the operating force required when opening and closing members such as a screen and a shutter. It is an object of the present invention to provide a winding device that is reduced.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the invention of the present application is configured to be rotatable around a fixed shaft and to be non-rotatable inside a cylindrical body around which an opening / closing member is wound. A fixing member, and a rotational force transmitting means connected to the cylindrical body for transmitting a rotational force to the cylindrical body; and the fixing member and the rotational force transmitting means are connected by a torsion coil spring. A picking device (claim 1) is provided.

According to the invention of this application, both ends of the torsion coil spring are hook portions, and at this hook portion, the torsion coil spring is hooked on a fixing member and a locking member provided on the rotational force transmitting means. (Claim 2),
The torsion coil spring connects the fixed member and the rotational force transmitting means in a state of being wound in advance (Claim 3), and the rotating member that rotates in both the forward and reverse directions in accordance with only the rotation input through the operation code is mounted on the fixed shaft. The rotating member has a rotating output shaft, while the rotating force transmitting means has a rotating shaft, and the rotating shaft is disposed inside the torsion coil spring and connected to the rotating output shaft. It is preferable that the electric motor is built in the fixed member inside the cylindrical body, and that the rotation output shaft is connected to the torque transmitting means (claim 5). .

The invention of this application further provides an opening / closing device for opening and closing an opening or the like in which the opening / closing member having a plurality of tiltable flaps is attached to the winding device. is there.

Hereinafter, the winding device of the present invention will be described in more detail with reference to the drawings.

[0012]

1 and 2 are a sectional view and an exploded perspective view, respectively, showing an embodiment of a winding device according to the present invention.

For example, as shown in FIGS. 1 and 2, the winding device according to the invention of the present application is rotatable around a fixed shaft (1), and winds up an opening / closing member such as a screen or a shutter. A fixed member (3), which is not rotatable, and a torque transmitting means (4) connected to the cylinder (2) and transmitting torque to the cylinder (2) are provided inside the body (2). Is done.

Specifically, as shown in FIGS. 1 and 2, the fixed shaft (1) can be disposed at one end of the cylindrical body (2), and the fixed member (3) is The cylindrical body (2) can be incorporated inside the cylindrical body (2) as a cylindrical body having a smaller diameter than the cylindrical body (2). In this case, the fixed shaft (1) is supported by the support portion (5), and the fixing member (3) is attached to the support portion (5) using a fixing device (6) such as a screw, so that the fixed shaft (1) cannot be rotated. it can.

On the other hand, the cylindrical body (2) incorporates a bearing (7) at one end, and the bearing (7) is provided at one end of the cylindrical fixing member (3) located on the fixed shaft (1) side. It can be arranged on the outer circumference. A bearing (7) is also incorporated in the other end of the cylindrical body (2), and these two bearings (7)
Can make the cylinder (2) rotatable around the fixed axis (1). Further, for connecting the cylindrical body (2) and the rotational force transmitting means (4), for example, as shown in FIG. 1, a fixing tool (8) such as a screw is used, or as shown in FIG. A notch (9) is formed at the end or the like of the rotational force transmitting means (4), while a projection or the like is provided inside the cylindrical body (2), and the projection or the like is fitted into the notch (9). Both (2) and the rotational force transmitting means (4) can be fitted and connected.

In the winding device according to the invention of the present application,
For example, the fixing member (3) exemplified above and the torque transmitting means (4) are connected by a torsion coil spring (10).

The torsion coil spring (10) is used to rotate the cylinder (2) via the torque transmitting means (4) in order to wind up or pull out the opening / closing member. It is tightened by the rotation in one direction and generates torque. Normally, the torsion coil spring (10) can be set so that it is tightened and the torque increases as the opening / closing member is pulled out. As shown in FIGS. 1 and 2, the torsion coil spring (10) can be bent at both ends to form a hook portion (11). The hook portion (11) can be fixed to the fixing member (3) and rotated. Force transmission means (4)
Locking members such as fixing pins (1
2) and can be attached to the fixing member (3) and the rotational force transmitting means (4).

As described above, in the winding device of the invention of this application, it is rotatable around the fixed shaft (1), and is fixed inside the cylindrical body (2) for winding the opening / closing member such as the screen and the shutter. A fixed member (3) fixed to the shaft (1) and non-rotatable, and a torque transmitting means (4) connected to the cylinder (2) and transmitting torque to the cylinder (2) are provided. The fixing member (3) and the torque transmitting means (4)
Are connected by a torsion coil spring (10), so that when the opening / closing member is wound or pulled out, the cylindrical body (2)
Is rotated through the torque transmitting means (4), the torsion coil spring (10) is wound and the torsion coil spring (10) generates a torque (13) as shown in FIG. This torque (13) is wound by the opening and closing member,
Or, it acts to balance and complement the moment (14) when it is pulled out. For this reason, in the winding device of the invention of this application, the operating force for rotating the tubular body (2) via the rotating force transmitting means (4) is the same as the moment (14) of the opening / closing member shown in FIG. Torsion coil spring (1
Only the difference of the torque (13) generated in 0) is sufficient, and the operation force is reduced. Also, when the cylinder (2) is rotated in the opposite direction for winding or pulling out the opening / closing member, also in this case, the moment of the opening / closing member (10) is generated by the torque generated by the tightened torsion coil spring (10). Since 14) is complemented and balanced, the operating force is reduced.
The operating force is reduced in both the forward and reverse rotations, that is, in both the operation of winding and pulling out the opening / closing member, and the disadvantage of the operating force pointed out in the conventional worm gear drive type and pulley drive type winding device. Is eliminated. In addition, consideration of the failure of the mechanical unit, etc., which is a concern of the worm gear driven winding device, is also eliminated.

Moreover, in the winding device of the invention of this application,
As described above, the torsion coil spring (10) effective for reducing the operating force only needs to be provided so as to connect the fixing member (3) and the rotational force transmitting means (4). There is no fear that the structure will be complicated by being provided inside the body (2) and providing the torsion coil spring (10). In particular, as shown in FIGS. 1 and 2, both ends of the torsion coil spring (10) are used as hook portions (11), and the hook portions (11) are used as fixing members (3).
And a locking member (1) provided in the rotational force transmitting means (4).
In the case of adopting the structure of hooking in 2), a special structure for providing the torsion coil spring (10) is not required, and it is easy to remove, which is effective for maintenance and the like.

Further, in the winding device of the present invention,
The torsion coil spring (10) can be assembled inside the cylinder (2) in a state where it is slightly wound in advance. When the torsion coil spring (10) is incorporated by slightly tightening, the torque generated in the torsion coil spring (10) is
As shown in FIG. 3, the operating force that has risen to the reference numeral 15 and is applied to the cylinder (2) via the rotational force transmitting means (4) is reduced to the shaded portion in FIG. The power is further reduced.

The drive system of the winding device according to the invention of the present application includes an operation code (1) as shown in FIGS.
In addition to the manual driving method according to 6), the electric motor driving method shown in FIG. 4 can be adopted.

The operation code (16) shown in FIGS. 1 and 2
In the winding device of the invention of the present application, for example, the rotating member (17) that rotates in both the forward and reverse directions in accordance with only the rotation input through the operation code (16) is fixed to the fixed shaft (1). Can be provided above. The rotating member (17) has a rotation output shaft (18).
On the other hand, the rotational force transmitting means (4) can include a rotating shaft (19). The rotating shaft (19) provided in the rotating force transmitting means (4) is arranged inside the torsion coil spring (10), and the rotating output shaft (18) provided in the rotating member (17).
Can be connected to

In the manual driving system having such a configuration, when rotation is input to the rotating member (17) through the operation code (16), the rotation is output from the rotation output shaft (18), and then the rotation is output to the rotation output shaft (18). The rotation force transmitting means (4) is inputted to the rotation shaft (19) connected to (18) and can be rotated. The operation code (16) is excellent in operability since the operation code (16) has a large degree of freedom in the position where the operation code (16) is operated and can be bent to change the direction. As such an operation code (16), one in which a plurality of small ball members (20) such as beads are connected by a string (21), a chain or the like can be applied. When the operation code (16) is such that a plurality of such small ball members (20) are connected by a string (21) or a chain, the small ball members (20) are provided on the side surface of the rotating member (17). ) And chains can be formed so that they partially and continuously engage.

In the manual drive system, the rotating member (17) rotates in both the forward and reverse directions in accordance with only the rotation input through the operation code (16), so that the torsion coil spring (10) is wound and tightened with the operation. Even if the torque gradually increases and the moment of the opening / closing member gradually increases, the rotating member (17) does not reverse even when the rotating force is reversely input from the rotating shaft (19). Therefore, the opening / closing member can be stably stopped at an arbitrary position. Further, as described above, when the torsion coil spring (10) is slightly wound in advance and incorporated into the cylindrical body (2), the rotational force transmitting means (4) does not reverse. When the torsion coil spring (10) is previously tightened, the operation code (16) is operated to rotate the rotating member (1) in a predetermined direction.
It is only necessary to rotate 7), and no special means is required for maintaining the state. There is no need to consider temporary fixing. The torsion coil spring (10) stably holds the tightened state.

As means for enabling the rotation of the rotating member (17), for example, a clutch mechanism using a coil spring (23) can be adopted.
7) and the rotary output shaft (18).

Specifically, in the clutch mechanism using the coil spring (23), the coil spring (23) is wound in such a direction that it can be released by the rotation of the rotating member (17) in both forward and reverse directions. Further, a cylindrical housing (24) for housing the coil spring (23) is provided on the rotation output shaft (18) side of the rotating member (17). A cutout (25) is formed in a part of the housing portion (24). The coil spring (23) is inserted into the housing portion (24) by bringing both ends (27) into contact with the end surface (26) of the housing portion (24).
At this time, the coil spring (23) is arranged on the fixed shaft (1). Further, in this clutch mechanism, a projecting piece-shaped engaging portion (28) having a size to fit between both ends (27) of the coil spring (23) is provided on the rotating member (17) side of the rotating output shaft (18). Provided. This locking part (2
8) is inserted between both ends (27) of the coil spring (23), and the rotation output shaft (18) is attached to the accommodating portion (24) of the rotating member (17).

For example, in the clutch mechanism having the above-described structure, the coil spring (23) has both ends (2) as described above.
7) The accommodation portion (24) provided in the rotating member (17) in
Is wound so as to be in contact with the end surface (26) of the rotating member (17) and to be released by the rotation of the rotating member (17). When the operation code (16) is operated to rotate the rotating member (17), The coil spring (23) rotates around the fixed shaft (1) together with the rotating member (17). The rotation output shaft (18)
Since it is locked by the coil spring (23) at the locking portion (28), it rotates together with the coil spring (23) and outputs the rotation input of the rotating member (17).

On the other hand, when a rotational force is reversely input from the rotation shaft (19) to the rotation output shaft (18), the rotation output shaft (18)
Is trying to reverse, but the locking portion (28) is locked at both ends (27) of the coil spring (23), and in this case, the rotation of the rotation output shaft (18) is reversed by the coil spring (2).
3) The coil spring (23)
Does not reverse. Therefore, for a reverse input from the rotating shaft (19), neither the rotating output shaft (18) nor the rotating member (17) rotate.

The clutch mechanism using such a coil spring (23) has a relatively small friction loss and is a simple means. The manual drive system using the operation cord (16) as shown in FIGS. It is especially effective for

Further, in the case of a manual drive system using the operation code (16), the winding device of the invention of the present application provides:
In order to further reduce the operation force of the operation code (16),
As shown in FIGS. 1 and 2, a reduction gear mechanism (29) can be interposed between the rotation output shaft (18) and the rotation shaft (19).

In the reduction gear mechanism (29), for example, as shown in FIG. 1, a plurality of planetary gears (31) meshing with the inner peripheral surface of the body (30) are arranged inside the body (30). An axis (32) may be provided. The rotation output shaft (18) can be meshed with a planetary gear (31) provided in a reduction gear mechanism (29), and the rotation shaft (19) has a reduction output shaft (32) fixed to a fixed pin or the like. Tools (33)
Can be connected.

When such a reduction gear mechanism (29) is interposed between the rotation output shaft (18) and the rotation shaft (19), the operation force of the operation code (16) is reduced by the reduction ratio, and
Variations in operating force can be reduced, and winding and pulling out operations are facilitated even when the opening / closing member is a heavy shutter. In addition, the rotational force reversely input to the rotation output shaft (18) is reduced to a positive number of the reduction ratio, so that the friction loss of the clutch mechanism using the coil spring (23) can be further reduced, and the durability can be improved. .

When the fixing member (3) has the cylindrical shape as described above, the reduction gear mechanism (29) can be housed inside the fixing member (3) to save space. Can be.

For example, the main body (3) of the reduction gear mechanism (29)
A plurality of grooves (34) extending in the length direction can be provided on the outer periphery of 0), while a projection (35) that can be fitted into the groove (34) can be provided on the inner periphery of the fixing member (3). Thus, the main body (30) of the reduction gear mechanism (29) can be inserted into the fixing member (3) by inserting the projection (35) into the groove (34) and fixed.

As described above, the electric motor driving system shown in FIG. 4 can be used as the driving system of the winding device of the present invention. In the case of using the electric motor drive system, as shown in FIG. 4, the electric motor (M) is built in the fixed member (3) inside the cylindrical body (2), and its rotation output shaft (36) is It can be connected to the torque transmitting means (4). Even in the case of the driving method using the electric motor (M), in the winding device of the invention of this application, the torsion coil spring (10) includes the cylindrical body (2).
(3) and torque transmitting means (4) inside
, The operating force required for winding and pulling out the opening / closing member is the difference between the moment of the opening / closing member and the torque generated in the torsion coil spring (10). The torque required for the electric motor (M) is shown in FIG. It is reduced to the shaded area shown in FIG. In the conventional electric motor drive system, the electric motor (M) is set to the torque indicated by reference numeral 37 in FIG. Can be reduced.

FIG. 5 is a plan view showing an embodiment of an opening / closing member to which the winding device of the present invention can be preferably applied. The opening / closing member (51) shown in FIG.
The opening / closing member includes a plurality of tiltable flaps (52).

Specifically, the flap (52) has at one end one end of a connecting crank pin (54) rotatably supported by a pulling element (53) which can be formed, for example, in a long plate shape. Is fixed to the part. The other end of the connecting crank pin (54) is connected to the pulling element (53).
The rotary element (5) which is located on the opposite side of the flap (52) between the
5) is rotatably supported. Rotating element (5
5) is connected to a mounting portion (56) of the opening / closing member (51) to the winding device via an elastic means (57) such as a coil spring. Accordingly, when the pulling element (53) is slightly pulled upward while the rotating element (55) is stopped, the rotating element (55) maintains the stopped state only by the extension of the elastic means (57). The pulling element (53) moves upwards, so that the connecting crankpin (54) rotates and the flap (5)
2) tilts.

A plurality of flaps (5
The opening / closing member (51) provided with (2) can partially open the opening by tilting the flap (52) even in a state where the opening such as the garage entrance is closed. Provides light and even ventilation. By applying the above-described winding device of the invention of the present application as a winding device for the opening / closing member (51), the opening / closing operability is excellent, and the convenience of lighting, dimming, and ventilation can be achieved. An excellent opening and closing device such as a roller screen and a roller shutter is provided.

Of course, the invention of this application is not limited by the above embodiments. It goes without saying that various aspects of the detailed structure are possible.

[0040]

As described above in detail, according to the invention of this application, the operating force required for opening and closing the opening and closing members such as the screen and the shutter is reduced. In particular, a winding device effective for a roller shutter is provided.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an embodiment of a winding device according to the present invention.

FIG. 2 is an exploded perspective view of a main part showing an embodiment of the winding device of the invention of this application.

FIG. 3 is a correlation diagram showing a relationship between a moment of an opening / closing member and a torque generated in a torsion coil spring in the winding device of the invention of this application.

FIG. 4 is a configuration diagram schematically showing one embodiment of a winding device of the invention of this application.

FIG. 5 is a plan view showing an embodiment of an opening / closing member to which the winding device of the present invention can be preferably applied.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fixed shaft 2 Cylindrical body 3 Fixed member 4 Torque transmitting means 5 Support part 6, 8, 33 Fixture 7 Bearing 9, 25 Notch 10 Torsion coil spring 11 Hook part 12 Locking member 13, 15 Torque of torsion coil spring 14 Opening / closing member Of operation 16 Operation code 17 Rotary member 18, 36 Rotary output shaft 19 Rotary shaft 20 Small ball member 21 String 22 Recess 23 Coil spring 24 Housing 26 End face 27 Both ends 28 Locking part 29 Reduction gear mechanism 30 Main body 31 Planetary gear 32 Reduction Output shaft 34 Groove 35 Projection 37, 38 Motor torque M Electric motor 51 Opening / closing member 52 Flap 53 Pulling element 54 Connecting crankpin 55 Rotating element 56 Mounting part 57 Elastic means

Claims (6)

[Claims] 1. A fixed member which is rotatable about a fixed shaft and which is not rotatable inside a cylindrical body for winding up an opening / closing member, and a rotation which is connected to the cylindrical body and transmits a rotational force to the cylindrical body. A winding device, wherein a force transmitting means is provided, and the fixing member and the rotational force transmitting means are connected by a torsion coil spring. 2. The winding according to claim 1, wherein both ends of the torsion coil spring are hook portions, and in the hook portion, the torsion coil spring is hung on a fixing member and a locking member provided on the rotational force transmitting means. Taking device. 3. The winding device according to claim 1, wherein the torsion coil spring connects the fixed member and the rotational force transmitting means in a state where the torsion coil spring is tightened in advance. 4. A rotating member, which rotates in both forward and reverse directions in accordance with only a rotation input through an operation code, is provided on a fixed shaft, and the rotating member has a rotating output shaft, while the rotating force transmitting means has a rotating shaft. The winding device according to any one of claims 1 to 3, wherein the rotation shaft is disposed inside the torsion coil spring and connected to the rotation output shaft. 5. The winding device according to claim 1, wherein an electric motor is incorporated in the fixed member inside the cylindrical body, and a rotation output shaft thereof is connected to the rotational force transmitting means. 6. An opening and closing device for opening and closing an opening or the like in which the opening and closing member provided with a plurality of tiltable flaps is attached to the winding device according to claim 1.