JPH0988458A - Winder of shutter, etc - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to open and shut an opening and shutting body manually irrespective of a state of an electric opening and shutting machine. SOLUTION: A shutter curtain 8 is wound with rotation of a winding pipe 7, and a tube motor 3 as a driving source is provided inside the winding pipe 7. A clutch mechanism 10 is provided between the tube motor 3 and a winding wheel 5a, and when an operator pulls a wire cable 15, the clutch mechanism is cut off to cut connection with the tube motor 3. The shutter curtain 8 can be easily opened with winding force for a winding spring 9. While, even if the tube motor 3 gets out of order in a state to wind the shutter curtain 8, when the clutch mechanism 10 is cut off, the shutter curtain 8 is drawn out from the winding pipe 7, and the tube motor 3 inside the winding pipe can be easily exchanged.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding device such as a shutter which can be opened / closed by an electric opening / closing device such that the opening / closing member such as a shutter is opened / closed manually regardless of the state of the electric opening / closing device.

[0002]

2. Description of the Related Art An opening and closing body such as a shutter is opened and closed by rotational driving of an electric opening and closing machine. The rotating shaft of the electric switch is connected to the winding member, and the shutter curtain is connected to the winding member via the hanging member. It is opened and unwound from the winding member to close this opening.

The electric switchgear includes one provided on a side portion (outside) of the winding member and one provided inside the winding member. In the case where an electric switch is provided inside the winding member, the winding member is configured by providing a hollow winding pipe on the outer circumference of the winding wheel having a predetermined diameter, and the electric winding is provided inside the winding pipe. A tubular motor as a switch is fixedly arranged. In addition, instead of the winding pipe, a plurality of connecting rods are provided between the winding wheels.

By the way, the electric switchgear is provided with a brake, and when the electric switchgear is stopped, the brake works to fix the rotating shaft to prevent the shutter curtain from falling.

[0005]

However, when the electric switchgear fails or a power failure occurs, the shutter curtain cannot be opened or closed because the brake remains in operation. If this situation occurs while the shutter curtain is still wound, the shutter cannot be lowered and the electric switchgear inside the winding pipe cannot be maintained. When trying to replace the electric switchgear due to a failure of the electric switchgear, the shutter had to be cut off, which was very troublesome.

Further, by providing the winding pipe with a winding spring (balance spring) which is biased in the direction in which the shutter curtain is always wound, the weight of the shutter is balanced and the winding force in the winding direction is small. It can be done by force. This makes it possible to rotate the take-up pipe in the take-up direction even when the electric switchgear is stopped, but this cannot be done easily because the electric switchgear has a brake. It was Therefore,
When the electric switch was stopped, it was necessary to release the operating brake and wind the shutter curtain. This requires a brake release mechanism.

Further, the electric switch has a structure in which the take-up pipe is rotated through the speed reducer, and even if the shutter is manually lifted by releasing the brake, a large force is generated due to the meshing force of the speed reducer gears. Need to lift with. In addition, when the shutter curtain side is raised, the electric switchgear side is rotated at a high speed above the rated rotation speed through the decelerator, which may damage the electric switchgear.

By the way, an electric switchgear provided with limit switches for setting the upper and lower limit positions, each of which sets the upper and lower limit positions by the number of rotations (number of rotations) of the rotary shaft, is used, and is manually operated when the electric switchgear is stopped. When you wind up the shutter curtain with
There is a problem that the set values of the upper and lower limits change, and it is troublesome that the upper and lower limit positions must be set again.

The present invention has been made in order to solve the above-mentioned problems, and it is possible to easily open and close the opening / closing body manually regardless of the state of the electric switchgear such as a stopped state of the electric switchgear. It is intended to provide a taker.

[0010]

To achieve the above object, a winding device for a shutter or the like according to the present invention is a shutter for winding an opening / closing body such as a shutter by driving an electric opening / closing device provided inside a winding member. In the winding device of claim 1, the winding spring (9) for urging the winding member in the winding direction and the electric opening / closing provided between the electric switch and the winding member. A clutch mechanism (10) capable of connecting or disconnecting the rotation of the machine to or from the winding member, and by cutting the clutch mechanism, the rotation of the electric opening / closing machine is cut to manually open / close the opening / closing body. I am trying.

Further, according to a second aspect of the present invention, there is provided a clutch plate (1) provided on each of the electric switchgear and the winding member.
1, 12) and an urging spring (14) for urging the one clutch plate toward the other clutch plate, the clutch mechanism (10) is constituted, and one end (15a) is located outside the winding device. The wire cable (15) is led out and the other end (15b) is connected to the one clutch plate, and the clutch plates can be connected or disconnected by operating the wire cable.

Further, as described in claim 3, the wire cable (15) is arranged inside the winding member from the outside of the apparatus via the fixed rod (4) which rotatably supports the winding member.

Further, according to a fourth aspect of the invention, the electric switchgear has a decelerator for decelerating at a predetermined ratio to rotate the rotating shaft (3b), and a brake for fixing the rotation of the rotating shaft when stopped. It can be configured.

Further, as described in claim 5, the open position and the closed position of the opening / closing body are set in advance in correspondence with the rotation of the winding member, and the rotation of the winding member is detected to be set at each of the positions. A limit setting unit (16) may be provided to stop the rotation of the electric switch when the limit is reached.

Further, as described in claim 6, the electric switchgear is composed of a tubular motor (3) having the limit setting section (16), and the limit setting section is centered on the central axis of the tubular motor. Rotating body (3
c), and the rotating body may constitute a part of the winding member.

Further, according to a seventh aspect of the present invention, the clutch plates (35, 36) provided on each of the electric switchgear and the winding member, and the one clutch plate are biased toward the other clutch plate. The clutch mechanism (34) is constituted by the urging spring (37) that is provided, and is provided on the bracket (2a) on one side that constitutes the shutter case, and is a projecting member (that is capable of projecting in the direction of releasing the clutch mechanism). 42, 53) and a release mechanism (40) having an operating lever (47) connected to the projecting member, and provided inside the winding member and connected to one clutch plate of the clutch mechanism. An operation of the releasing mechanism, which includes a connecting mechanism (38, 39) configured to rotate together with the winding member and which moves when the projecting member of the releasing mechanism projects to release the clutch mechanism. The bar actions may be configured for connecting or cutting the clutch plates are via a coupling mechanism.

Further, as described in claim 8, the projecting member (42) provided in the release mechanism (40) is provided with a plurality of arms (42a, 4a) whose axes at the other end are movable in the axial direction of the one end.
2b), and the center part of the arm may be a link arm (42) that contacts and presses the connecting mechanism (39).

Further, as described in claim 9, the projecting member (53) provided in the release mechanism (40) has an inclined surface (53a) and is movable, and the inclined surface is caused by the movement. The slide block (53) may be configured to project in the direction of the coupling mechanism (39) and contact and press.

To explain the operation of the above structure, the opening / closing body such as the shutter wound around the winding member is the winding spring 9.
The weight is balanced by and is opened and closed by the rotation of the electric switch. When the clutch mechanism 10 is disengaged, the rotation of the electric opening / closing device is not transmitted to the winding member, so that it can be opened / closed by hand. With this, even when the electric switchgear is stopped by a power failure, a failure or the like in a state where the open / close body is wound around the winding member, the open / close body can be unwound from the winding member simply by disconnecting the clutch mechanism 10. It becomes possible to maintain the electric switch inside the winding member without cutting the body. The clutch mechanism 10 can be disconnected by operating the wire cable 15 connected to one clutch plate and led out of the apparatus to separate it from the other clutch plate. Since the clutch mechanism 10 is disengaged, even if the opening / closing body is manually opened / closed, the electric opening / closing machine does not rotate, and the electric opening / closing machine has a decelerator so that the operator can apply a large force to the opening / closing body. It can be opened and closed without being opened and closed, and at the same time, it is possible to prevent the electric switchgear from rotating at an increased speed. Further, even if the brake is operated when the electric switch is stopped, the opening / closing body can be easily opened / closed regardless of the operation of the brake. Also,
If the limit setting unit 16 is configured to detect the rotation of the winding member, the limit setting value will not change even if the clutch mechanism 10 is disconnected and the winding member is manually opened / closed. Also,
The clutch mechanism 36 is provided on the bracket 2a on one side of the shutter case, and has the releasing mechanism 4 having projecting members 42 and 53 that are capable of projecting in the direction of releasing the clutch mechanism.
It is also possible to operate 0 to connect or disconnect the clutch plates via the connecting mechanisms 38 and 39.

[0020]

FIG. 1 is a sectional view showing a first embodiment of a winding device such as a shutter of the present invention. Although a shutter curtain composed of a plurality of slats as an opening / closing body will be described below as an example, the shutter curtain may be applied to a grill shutter, a roll screen, or a blind. Brackets 2a and 2b are provided on both sides of the shutter case 1, and a fixing portion 3a of the tubular motor 3 is fixed to one of the brackets 2a. The fixed rod 4 is fixed to the other bracket 2b. The rotating shaft 3b of the tubular motor 3 and the fixed rod 4 are coaxially arranged.

The fixed rod 4 can be composed of a hollow fixed pipe, or a hollow fixed pipe can be used by joining a half-split pipe. In these cases, the wire cable 15 is internally provided. It is arranged. Further, a groove may be formed in a part of the outer circumference of the fixed pipe, and the wire cable 15 may be arranged along the groove.

The tubular motor 3 has a built-in brake. When the tubular motor 3 is not driven (including a power failure), the brake works to fix (lock) the rotation of the rotary shaft 3b. In addition, the tubular motor 3 is provided with a speed reducer, which rotates the rotating shaft 3b in a state of being decelerated at a predetermined ratio and having a predetermined torque. Further, the tubular motor 3 is provided with a limit setting unit 16 for setting upper and lower limit positions of a shutter curtain 8 which will be described later.

Winding wheels 5a and 5b are rotatably provided at both ends of the fixed rod 4 via bearings. A winding wheel 5c having the same diameter is also rotatably provided on the rotating shaft 3b via a bearing 6a. Further, a rotating body (limit ring) 3c having the same diameter as the winding wheel 5 is provided in the vicinity of the fixed portion 3a side of the tubular motor 3, and the rotating body 3c rotates when the tubular motor 3 is driven. It is not connected to the shaft 3b and is freely rotatable.

These winding wheels 5a, 5b, 5c,
A hollow winding pipe 7 as a winding member for winding the shutter curtain 8 is fixed to the outer peripheral portion of the rotating body 3c. One end of a shutter curtain 8 is connected to the outer circumference of the winding pipe 7 via a hanging member.

Further, a winding spring 9 (balance spring) is provided between the fixed rod 4 and the winding wheel 5b. The winding spring 9 is a winding pipe for winding the shutter curtain 8. It is composed of a torsion spring biased in the direction of rotation of 7 and winds the shutter curtain 8 with a light force (in both electric drive and manual opening described later).
It can be done. Therefore, by providing the winding spring 9, the load at the time of winding is reduced, and the tubular motor 3 is downsized accordingly. As described above, the tubular motor 3 is used as the electric switch and the winding spring 9 is provided side by side, whereby the overall size can be simplified.

Next, FIG. 2 is a partially enlarged sectional view showing the clutch mechanism. A clutch mechanism 10 is provided between the rotary shaft 3b of the tubular motor 3 and the winding wheel 5a. One clutch plate 11 is fixed to the end of the rotary shaft 3b, passing through the winding wheel 5c. Between the take-up wheel 5a and the take-up wheel 5c, the other clutch plate 12 that moves toward the one clutch plate 11 side and is connected is provided. These clutch plates 1
A concave portion 11a and a convex portion 12a are formed on the joining surfaces of the clutch plates 1 and 12, and the clutch plates 11 and 12 are connected to each other by fitting the concave and convex portions.

The outer peripheral portion 12a of the other clutch plate 12
Are splined to a holding wheel 13 fixed to the winding pipe 7, i.e. in the direction of rotation, the holding wheel 1
It rotates together with 3 and is freely movable in the axial direction with respect to a fixed holding wheel 13. The other clutch plate 1
2 is constantly urged toward one clutch plate 11 by an urging spring 14 provided between the winding wheel 5a and the winding wheel 5a.

The other clutch plate 12 is movable in the A direction in the figure by a wire cable 15. As shown in FIG. 1, the wire cable 15 has one end 15a pulled out to the shutter side position, and the other end 15a via the inside of the fixed rod 4.
b is connected and fixed to the clutch plate 12. In this example, the wire cable 15 is provided with a covering 15c from the support plate 4a at the end of the fixed rod 4 to an external position. Therefore, by pulling one end 15a of the wire cable 15, the clutch plate 12 at the other end 15b can be separated from the one clutch plate 11 as shown in the operation diagram of FIG.

The fixed portion 3 of the tubular motor 3
A limit setting unit 16 is provided in a. The limit setting unit 16 is configured to count the rotation of the rotating body 3c and set the upper and lower limit positions of the shutter. The upper and lower limit positions are set by the limit setting unit 16 with the upper limit position when the shutter curtain 8 fixed to the rotating body 3c, that is, the winding pipe 7 when the shutter is installed, and the lower limit position when the shutter curtain 8 is lowered. This is done by operating the operation knob 16a.

According to the above construction, the rotary shaft 3 of the tubular motor 3 is operated by operating the open / close switch of the operating portion.
b rotates in the corresponding direction. At this time, the clutch mechanism 10
The clutch plates 11 and 12 are connected as shown in FIG. 2, and the rotation of the rotating shaft 3b causes the winding pipe 7 to rotate in the same direction via the holding wheel 13 to move the shutter curtain 8 up and down. When the shutter curtain 8 is raised, the winding spring 9 reduces the load during winding. On the other hand, the winding spring 9 prevents the shutter curtain 8 from falling when the shutter curtain 8 descends, and does not accelerate when falling.

The rotating body 3c fixed to the winding pipe 7 also rotates, and the limit setting section 16 judges that the shutter curtain 8 has reached the upper and lower limit positions when the count reaches the set value. Then, the driving power of the tubular motor 3 is cut off to automatically stop the tubular motor 3. After the stop, the brake built in the tubular motor 3 fixes the rotation of the rotating shaft 3b and holds the shutter curtain 8 in the stopped state.

Next, by pulling one end 15a of the wire cable 15, the shutter curtain 8 can be manually opened and closed regardless of the state of the tubular motor 3. When the one end 15a is pulled, the clutch plate 12 at the other end 15b is separated from the one clutch plate 11, so that the connection state with the tubular motor 3 is cut and the take-up pipe 7 can freely rotate.

When the shutter curtain 8 is raised, the winding spring 9 reduces the load at the time of winding, and the shutter curtain 8 can be raised with a small force. On the other hand, acceleration does not occur even when the shutter curtain 8 is lowered.

This manual opening / closing is particularly effective when the power supply is interrupted or the tubular motor 3 fails. For example, when the shutter curtain 8 is wound (opened) and a power failure occurs and the shutter curtain 8 cannot be closed, the shutter curtain 8 can be manually closed. Similarly, since the shutter curtain 8 wound on the winding pipe 7 can be lowered by manually closing the shutter curtain 8 even when the tubular motor 3 fails in a wound (open) state. The tubular motor 3 can be easily maintained and replaced without cutting the shutter curtain 8.

Even if the clutch curtain 10 is disconnected to manually open and close the shutter curtain, the limit setting section 16 receives the rotation of the rotating body 3c and interlocks with the rotation of the winding pipe 7. Because of the configuration, the upper and lower limit positions do not change, and the work of resetting the upper and lower limit positions can be eliminated. Further, since the power of the tubular motor 3 is disconnected from the winding member in the disengaged state of the clutch mechanism 10, when raising the shutter curtain side,
Even if the tubular motor 3 is vigorously raised, it is possible to prevent the tubular motor 3 from rotating at a speed higher than the rated rotation speed through the decelerator, and there is no risk of damage.

In the above structure, the clutch mechanism 10 is disconnected only when the one end 15a of the wire cable 15 is pulled. However, when the one end 15a is pulled, the engaging member 18 shown in FIG. With the configuration in which the clutch mechanism 10 is wound around, the disengaged state of the clutch mechanism 10 can be maintained, and the shutter curtain 8 can be easily opened and closed by one person. Alternatively, the one end 15a may be attached to the locking tool 18, and the locking tool 18 may be configured to be rotatable and the one end 15a may be wound and held. Similarly, by providing the clutch plate 12 on the side of the other end 15b of the wire cable 15 with a temporary locking mechanism, once the end 15a is pulled, the clutch plate 12 is held away from the clutch plate 11, and again, A configuration may be adopted in which these are connected by pulling the one end 15a. The mechanism can be configured by a general-purpose ratchet mechanism or the like.

In the above description of the structure, the other clutch plate 12 of the clutch mechanism 10 is the wire cable 1.
Although the clutch plate 12 can be moved freely by 5, the other clutch plate 12 can be fixed and the clutch plate 11 can be moved by the wire cable 15. In either form, the urging spring 14 connects the two clutch plates 11 and 12 to each other when the wire cable 15 is not pulled.

Further, as shown in FIG. 4, the wire cable 15 may be pulled out from the middle position of the fixed rod 4 and connected to the clutch plate 12. In the example shown in the figure, the winding wheel 5 that rotates the wire cable 15
a and the bearing 5g, the inner position, that is, the through hole 4bb of the shaft support base 4b fixed to the fixed rod 4 is penetrated, and the other end 1
5b is connected and fixed to the clutch plate 12. The wire cable 15 may have a structure in which the covering 15c is fixed to the through hole 4bb portion, or may have a structure in which only the core wire is passed through the through hole 4bb so as to be movable in the axial direction.

In addition, as an electric switch provided inside the winding member, the tubular motor 3 is replaced by the one shown in FIG.
As shown in FIG. 5, a configuration using an electric switch 20 of a type other than the tubular motor 3 may be used. The electric switch 20 is fixed to a fixed rod 4 which is bridged between the brackets 2 and 2. The clutch mechanism 10 is provided between the rotary shaft 20a of the electric switch 20 and the winding wheel 5 to freely disconnect the transmission of the rotational force.

The clutch mechanism 10 shown in the figure is constructed such that the clutch plate 12 on the electric open / close 20 side is movable in the direction of the clutch 11 on the winding wheel 5 side and is biased by a biasing spring 14. Also, the wire cable 15
Is led out of the fixed rod 4 from the midway position, and is supported by the support plate 4a.
The cover 15c is provided up to the position, and the other end 15b is attached to the clutch plate 12. Further, instead of the winding pipe 7, a plurality of connecting rods 21 are provided on the outer periphery of the winding wheel 5. As described above, even with a shutter structure having an electric opening / closing device that uses not only the tubular motor 3 but also other electric motors, the manual opening / closing can be performed regardless of the state of the electric opening / closing device as described above.

Although the electric switch 20 does not have the limit setting section 16, if the limit setting section 16 detects the rotation of the winding wheel 5, even if the manual opening / closing is performed, It is possible to prevent the limit set value from changing. Instead of the limit setting unit 16 that counts the rotation of the winding wheel 5 described above, limit switches may be provided above and below the guide rails of the shutter curtain 8. Not only the electric switch 20 but also the tubular motor 3 not provided with the limit setting unit 16 can prevent the change of the limit set value by the same configuration.

Further, as shown in FIG. 6, the wire cable 15 can be arranged without interposing the inside of the fixed rod 4. In the example of the same figure, the through hole 4cc of the shaft supporting base 4c fixed to the fixed rod 4 is located inside the winding wheel 5b that rotates the wire cable 15 and the bearing 5h.
It penetrates inside. The wire cable 15 is arranged outside the fixed rod 4 and through the inside of the winding spring 9. In this way, the wire cable 15 can be arranged along the peripheral surface of the fixed rod 4.

Next, a second embodiment of the winding device such as the shutter of the present invention will be described. In the second embodiment, the structure of the clutch mechanism 10 is changed, and the clutch mechanism 10 is released by using the release mechanism 40 without using the wire cable 15.
7 is a front sectional view of the same device, FIG. 8 is an exploded perspective view of a portion of the same device, FIG. 9 is a sectional view taken along line AA of FIG. 7, and FIG. 10 is B of FIG.
FIG. 4 is a cross-sectional view taken along line B. The release mechanism 40 is omitted in FIG. 7, and the winding pipe 7 is omitted in FIG. In each of these drawings, only the left half portion described in the first embodiment, that is, the tubular motor 3 and the clutch mechanism portion are illustrated, and the fixed rod 4 and the winding spring 9 in the right half portion have the same configuration. Therefore, the illustration is omitted. Further, the same parts as those in the above-mentioned configuration are designated by the same reference numerals, and the description thereof will be omitted.

One bracket 2a of the shutter case 1
The fixed portion 3a of the tubular motor 3 is fixed to the shaft with a screw or the like. The shaft body 30 is fixed to the rotary shaft 3b, and the shaft body 30 rotates together with the rotary shaft 3b. This shaft 30
Is axially supported by a winding pipe 7 as a winding member via a bearing 6. Specifically, as shown in FIG. 9, inside the winding pipe 7, a plurality of support fins 7 a are formed at equal intervals along the axial direction.
Are supported by the support fins 7a. Therefore, the rotating shaft 3b of the tubular motor 3 and the shaft body 30 are supported at the center position of the winding pipe 7.

The fixed portion 3 of the tubular motor 3
The limit setting unit 16 provided in a is configured to count the rotation of the rotating body (limit ring) 3c and set the upper and lower limit positions of the shutter. This rotating body 3c is
It is not connected to the rotary shaft 3b that rotates when the tubular motor 3 is driven, and is freely rotatable.

A fixed disk 32 is provided on the rotating body 3c, and a groove 32a of the fixed disk 32 is engaged with an engaging projection 3cc formed on the rotating body 3c. The fixed disk 32 pivotally supports one end of the winding pipe 7, the outer diameter of which corresponds to the inner diameter of the winding pipe 7, and
The threaded hole 32d (see FIG. 8) is screwed into the take-up pipe 7, and engaging grooves 32b that engage with the support fins 7a of the take-up pipe 7 are formed in the circumferential direction. Therefore, the rotation of the winding pipe 7 is transmitted to the rotating body 3c via the fixed disk 32, and the limit setting unit 16 counts the rotation. In addition, one end of the above-mentioned shutter curtain 8 is connected to the outer periphery of the winding pipe 7 via a suspending member.

A clutch mechanism 34 is provided on the shaft body 30 connected to the rotary shaft 3b of the tubular motor 3. One clutch plate 35 is provided on the outer periphery of the central portion of the shaft body 30.
Has been fixed. Further, on the shaft body 30, there is provided the other clutch plate 36 which moves to the one clutch plate 35 side and is connected thereto. The clutch plates 35 and 36 are formed with a convex portion 35a and a concave portion 36a, and the clutch plates 35 and 36 are connected to each other by fitting the concave and convex portions. The outer diameter of the clutch plate 35 is equal to the support fin 7 of the winding pipe 7.
The inner diameter of the support fin 7a is set to be equal to or smaller than the inner diameter of the support fin 7a so as not to touch a.

The other clutch plate 36 is spline-connected to the take-up pipe 7. That is, as shown in FIG. 10, the clutch plate 36 is formed with a moving groove 36b that fits into the support fin 7a, and rotates in the rotational direction together with the take-up pipe 7, and one clutch plate in the axial direction. Three
5 is freely movable. The other clutch plate 36 is constantly urged toward one clutch plate 35 by an urging spring 37 provided between the other clutch plate 36 and the step portion 30b (see FIG. 7) provided at the end of the shaft body 30. It is energized.

On the outer periphery of the other clutch plate 36, one ends of two flat bars 38 are fixed with screws at equal intervals, for example, at intervals of 180 degrees (see FIG. 8). The flat bar 38 is a plate extending inside the winding pipe 7 toward the fixed portion of the tubular motor 3. The other end of the flat bar 38 is fixed by a screw to a support ring 39 located on one side of the fixed disc 32 (outside the fixed disc 32), and the inner diameter of the support ring 39 is the fixed disc 3.
It is fitted to the second small diameter portion 32e. The other clutch plate 36 and the support ring 39 have the same outer diameter and are formed smaller than the inner diameter of the winding pipe 7. Further, on the fixed disk 32, a passage groove 32c is formed at a passage portion of the flat bar 38 with a predetermined gap.

The flat bar 38 and the support ring 39 are
It is provided as a connecting mechanism that transmits the release force when the release mechanism 40 is operating to the clutch mechanism 34. This release mechanism 4
0 is provided on the wall surface of one bracket 2a.
The support plate 41 of the release mechanism 40 is provided on the wall surface of the bracket 2a.
Are fixed, and a pair of link arms 42 forming a projecting member are provided at both ends of the support plate 41. Each of the link arms 42 is arranged at a position facing the support ring 39.

The upper end of the link arm 42 has the support plate 4
The arm 42a pivotally supported by 1 and the shaft at the lower end are the support plate 4
1 has an arm 42b which is vertically slidable in the long groove 41a. The arms 42a and 42b are connected at their central portions by a shaft, and a pressing roller 42c is coaxially provided on the central shaft. It is a composition. The shaft at the lower end of the arm 42b is
It is connected to the connecting plate 43. The connecting plate 43 is bent, is located above the inside of the outer frame 46 on the side of the guide rail 45, and is connected to the bent operating lever 47 with a screw. The operating knob 47a of the operating lever 47 is provided on the outer frame 4
6 is located in a vertically long opening hole 46a formed inside (opening). Therefore, when the operation knob 47a is moved upward, the connecting plate 43 is moved upward and both arms 42 are moved.
The distance between a and 42b is reduced, and the pressing roller 42c provided at the center of the link arm 42 projects in the direction of the support ring 39 (see FIG. 8). A screw hole 41b of the support plate 41 is exposed between the link arms 42, and the fixing portion 3a of the tubular motor 3 is fixed with a screw.

Next, the operation of the clutch mechanism 34 having the above structure will be described. Normally, in the clutch mechanism 34, both clutch plates 35 and 36 are meshed with each other by an urging spring 37 (state shown in FIG. 11). At this time, the operation knob 47
a is in the lower position, and the link arm 42 of the release mechanism 40
Does not project and is not in contact with the support ring 39 (inactive state). Therefore, by operating the open / close switch on the operating section,
When the rotary shaft 3b of the tubular motor 3 rotates in the corresponding direction, the clutch mechanism 34, the support ring 39, and the fixed disk 3
Similarly, 2 etc. rotate to rotate the winding pipe 7 in the same direction, and the shutter curtain 8 (not shown) moves up and down. When the shutter curtain 8 moves up, the winding spring 9
As a result, the load during winding is reduced. On the other hand, the winding spring 9 prevents the shutter curtain 8 from falling when the shutter curtain 8 descends, and does not accelerate when falling.

Further, due to the rotation of the fixed disk 32, the rotating body 3c fixed to the winding pipe 7 also rotates, and the limit setting section 16 causes the shutter curtain 8 to move upward when the count reaches the set value. When it is determined that the lower limit position has been reached, the driving power of the tubular motor 3 is cut off and the tubular motor 3 is automatically stopped. After the stop, the brake built in the tubular motor 3 fixes the rotation of the rotating shaft 3b and holds the shutter curtain 8 in the stopped state.

Next, the shutter curtain 8 can be manually opened and closed by pushing up the operation knob 47a. When the operation knob 47a is pushed up, as shown in FIG. 12, the link arm 42 of the release mechanism 40 projects, and the pressing roller 42c moves the support ring 39 in the C direction in the figure.
As a result, the other clutch plate 36 moves in the same C direction via the flat bar 38, and the engagement with the one clutch plate 35 is released.

As a result, the driving force of the tubular motor 3 is not transmitted to the other clutch plate 36, and the tubular motor 3, shaft 30, one clutch plate 35 side, the other clutch plate 36, the flat bar 38, The transmission of power between the support ring 39, the fixed disk 32, and the winding pipe 7 is cut off. In this state, the winding pipe 7 can freely rotate. Then, when the shutter curtain 8 is raised, the winding spring 9 reduces the winding load so that the shutter curtain 8 can be raised with a small force, while acceleration does not occur even when the shutter curtain 8 is lowered.

This manual opening / closing is particularly effective when the power supply is interrupted or the tubular motor 3 fails. For example, when the shutter curtain 8 is wound (opened) and a power failure occurs and the shutter curtain 8 cannot be closed, the shutter curtain 8 can be manually closed. Similarly, since the shutter curtain 8 wound on the winding pipe 7 can be lowered by manually closing the shutter curtain 8 even when the tubular motor 3 fails in a wound (open) state. The tubular motor 3 can be easily maintained without cutting the shutter curtain 8.

In addition, even if the release mechanism 40 is operated to disconnect the clutch mechanism 34 in order to manually open and close the shutter curtain, the limit setting unit 1 is operated via the fixed disk 32.
Since the rotary body 3c of 6 rotates and is interlocked with the rotation of the winding pipe 7, the upper and lower limit positions do not change, and the work of resetting the upper and lower limit positions can be eliminated. Further, since the power of the tubular motor 3 is disconnected from the winding member in the disengaged state of the clutch mechanism 10, even when the shutter curtain side is raised, even if the shutter curtain side is raised vigorously, the tubular motor is passed through the reducer. It is possible to prevent the motor 3 from rotating at a speed higher than the rated speed, and there is no fear of damage.

In the above structure, the clutch of the clutch mechanism 34 is released by the operation of the release mechanism 40 provided on the bracket 2a without using a wire cable or the like, and the operating lever connected to the release mechanism 40 is used. 47
Does not occupy the space required for wire bending because it is operated directly. Wire cable 1 used in the first embodiment
5 has a configuration in which it is bent downward with a predetermined curvature, but when this wire cable 15 is bent sharply (the bending radius is small), the resistance becomes large and a large force is required for operation. Therefore, if the bending radius of the wire cable 15 is increased, the wire cable 15 protrudes in the width direction by that amount. Therefore, a shutter having a large bending radius of the wire cable 15 has a large restriction when it is housed in a building and may not be attached.
In particular, in the shutter case 1 having the entire width accommodated up to the bent portion of the wire cable 15, it becomes impossible to conform to the standard width of the building structure of the entrance corner and the exit corner, and other rain gutters,
There is a problem that it interferes with fittings such as handrails. On the contrary, if the entire width of the shutter case 1 is adapted to the standard width, the width of the shutter curtain 8 becomes smaller and the shutter curtain 8 does not conform to the window width. However, in the second embodiment, since the release mechanism 40 does not have a width and can be accommodated in the bracket 2a on one side, it is not necessary to expand the entire width of the shutter case 1. It can be adapted easily. Also, it is possible to easily adapt to different width dimensions at each site.

Next, FIG. 13 shows the release mechanism 4 described above.
It is a partial perspective view which shows the modification of 0. This release mechanism 40
Then, instead of the link arm 42 as the protruding member,
The slide block 53 is used. Both sides of the slide block 53 are guided by the slide grooves 51a of the support plate 51, and are vertically slidable. The slide block 53 has an inclined surface 53a with a larger protruding amount toward the upper side, and the inclined surface 53a is arranged at a position in contact with the support ring 39.

Incidentally, between the two slide blocks 53,
The screw hole 51b of the support plate 51 is exposed, and the fixing portion 3a of the tubular motor 3 is fixed with a screw. The lower end of the slide block 53 is a bent connecting portion 53b, which is connected to the operating lever 47 similar to the above.

Also in this modification, when the operation knob 47a of the operation lever 47 is pushed up, the slide block 53 of the release mechanism 40 moves upward, and the inclined surface 53a of this slide block 53 projects toward the support ring 39 to support it. The ring 39 is moved. As a result, the other clutch plate 36 moves in the same direction via the flat bar 38, the engagement with the one clutch plate 35 can be released, and the shutter curtain 8 can be manually opened as described above. Even in this modification, the release mechanism 40 does not have a width and can be accommodated in the bracket 2a on one side, so that the entire width of the shutter case 1 cannot be expanded.

[0062]

According to the present invention, regardless of the winding state of the opening / closing body such as the shutter with respect to the winding member by the electric opening / closing device, the clutch mechanism is simply disengaged and the electric opening / closing device is stopped manually. Since the opening / closing body can be wound up, there is an effect that the electric switchgear inside the winding member can be easily maintained. Further, when the opening / closing body is in the closed state, even when the electric switch is stopped, the force for raising the opening / closing body to manually wind it is small because the winding spring is provided. You will be able to do it with little power. Even when the electric switchgear has a decelerator and a brake that fixes the rotating shaft when stopped, even if the winding member rotates, it is not transmitted to the tubular motor when the clutch mechanism is disengaged. You can easily open and close. Further, it is possible to prevent the electric switchgear from being damaged by being accelerated by the speed reducer. Further, the limit setting unit detects the rotation of the winding member, so that the limit setting value does not change even if the clutch mechanism is disconnected and the winding member is manually opened / closed.
The limit set value once set can be retained when the opening / closing body is electrically operated or manually opened / closed, so that it is not necessary to set again. Further, since the opening / closing body can be opened / closed with a small force by the winding spring, a tubular motor having a limit setting section can be used as an electric switch, and the rotating body of the limit setting section is used as a part of the winding member. By doing so, the configuration can be simplified,
The whole can be miniaturized.

Further, the clutch mechanism is released by moving one clutch plate using a wire cable, or by transmitting the protrusion amount of the release mechanism to one clutch via the coupling mechanism. You can choose. According to the wire cable, the cable can be bent and pulled out to an arbitrary position, and the operation position and height of the wire cable end can be easily changed. Further, in the configuration provided with the release mechanism, since the release mechanism can be efficiently arranged in the bracket of the shutter case and the release mechanism is directly operated by the operation lever, the width of the shutter case can be reduced even if the release mechanism is provided. Since it does not expand and there is no need to change the design of the installation width even if the release mechanism is provided, the installation location of the shutter can be freely selected.

[Brief description of drawings]

FIG. 1 is a sectional view showing a first embodiment of a winding device such as a shutter of the present invention.

FIG. 2 is an enlarged view showing a clutch mechanism of the opening / closing device.

FIG. 3 is an operation diagram showing a state in which the clutch mechanism is disengaged.

FIG. 4 is a view showing another arrangement state of the wire cable of the winding device.

FIG. 5 is a cross-sectional view showing a state in which the drive source of the winding device is changed.

FIG. 6 is a view showing another arrangement state of the wire cable of the winding device.

FIG. 7 is a front sectional view showing a second embodiment of a winding device such as a shutter according to the present invention.

FIG. 8 is an exploded perspective view of a portion of the device.

FIG. 9 is a sectional view taken along line AA of FIG. 7;

FIG. 10 is a sectional view taken along line BB of FIG. 7;

FIG. 11 is a view showing the operation of the same device (before cancellation).

FIG. 12 is a view showing the operation of the same device (at the time of cancellation).

FIG. 13 is a partial perspective view showing a modified example of the release mechanism of the device.

[Explanation of symbols]

1 ... Shutter case 1, 2a, 2b ... Bracket, 3 ...
Tubular motor, 4 ... fixed rod, 5 ... winding wheel,
8 ... Shutter curtain, 9 ... Winding spring, 10, 34
... Clutch mechanism, 11, 12, 35, 36 ... Clutch plate, 14, 37 ... Energizing spring, 15 ... Wire cable, 16 ... Limit setting section, 18 ... Locking tool, 20 ... Electric switch, 21 ... Connection rod , 38 ... Flat bar, 39 ... Support ring, 40 ... Release mechanism, 42 ... Link arm, 46 ... Outer frame, 47 ... Operation lever, 47a ... Operation knob, 53 ... Slide block, 53a ... Inclined surface.

Claims (9)

[Claims] 1. A winding device such as a shutter for winding an opening / closing body such as a shutter by driving an electric opening / closing device provided inside the winding member, wherein the opening / closing body is attached in the winding direction via the winding member. A winding spring (9) for urging, and a clutch mechanism (10, 34) provided between the electric switchgear and the winding member and capable of connecting or disconnecting rotation of the electric switchgear to the winding member. A winding device such as a shutter, characterized in that the opening / closing body is manually opened / closed by disconnecting the rotation of the electric opening / closing device by disconnecting the clutch mechanism. 2. A clutch plate (11, 12) provided on each of the electric switchgear and the winding member, and an urging spring (14) for urging the one clutch plate toward the other clutch plate. The clutch mechanism (10) is constituted by: one end (15a) of which is led out to a position outside the winding device, and the other end (15b) of which has a wire cable (15) connected to the one clutch plate, The winding device for a shutter or the like according to claim 1, wherein the clutch plates are connected or disconnected by operating a wire cable. 3. The shutter or the like according to claim 2, wherein the wire cable (15) is arranged inside the winding member from outside the apparatus via a fixed rod (4) which rotatably supports the winding member. Take-up device. 4. The electric switchgear according to claim 1, wherein the electric switchgear includes a decelerator that decelerates at a predetermined ratio to rotate the rotating shaft (3b), and a brake that fixes rotation of the rotating shaft when stopped. Winding device such as shutter. 5. An electric opening / closing device in which an open position and a closed position of an opening / closing body are set in advance corresponding to the rotation of the winding member, and when the rotation of the winding member is detected and each position is reached. The winding device for a shutter or the like according to claim 1, further comprising a limit setting section (16) for stopping the rotation of the roller. 6. The electric switch comprises a tubular motor (3) having the limit setting section (16),
The take-up device for a shutter or the like according to claim 5, wherein the limit setting unit includes a rotating body (3c) rotatable about a central axis of the tubular motor, and the rotating body constitutes a part of the winding member. apparatus. 7. A clutch plate (35, 36) provided in each of the electric switchgear and the winding member, and an urging spring (37) for urging the one clutch plate toward the other clutch plate. The clutch mechanism (34) is constituted by the bracket (2a) on one side forming the shutter case.
And a release mechanism (40) provided on the base plate and projecting in the direction of releasing the clutch mechanism (42, 53), and an operating lever (47) connected to the projection member.
And a structure that is provided inside the winding member, is connected to one clutch plate of the clutch mechanism and rotates together with the winding member, and moves when the protruding member of the release mechanism protrudes to move the clutch mechanism. Connection mechanism for releasing (38, 3
9. The winding device for a shutter or the like according to claim 1, further comprising: 9), wherein the clutch plates are connected or disconnected via a connecting mechanism by operating an operation lever of the release mechanism. 8. The projecting member (42) provided in the release mechanism (40) is composed of a plurality of arms (42a, 42b) whose axes at the other end are movable in the axial direction at one end. The winding device for a shutter or the like according to claim 7, wherein a central portion is constituted by a link arm (42) that comes into contact with and presses against the connecting mechanism (39). 9. The projecting member (53) provided in the release mechanism (40) has an inclined surface (53a) and is movable, and the movement causes the inclined surface to move toward the connecting mechanism (39). The winding device for a shutter or the like according to claim 7, wherein the winding device comprises a slide block (53) that projects and contacts and presses.