JPH05340176A - Driving device for opening and shutting shutter - Google Patents

Abstract

PURPOSE:To enable an opening and shutting machine to transfer only output rotary torque without receiving tensile force from a conduction chain in an electric winding shutter and to make it possible to remove the opening and shutting machine only easily and skillfully in separation from an output sprocket thereof in the case of having a trouble therein. CONSTITUTION:A winding shaft of a shutter curtain and an opening and shutting machine 3 driving the winding shaft for forward and reverse are arranged to the insides of panel storing sections provided to the upper parts of a pair of right and left guide rails, and a conduction chain is engaged with an output sprocket 31 of the opening and shutting machine and an input sprocket on the winding shaft side and is wound on them. In a shutter opening and shutting driving device constituted in such a way, an output shaft of the opening and shutting machine is separated from the output sprocket thereof, the output sprocket is pivoted on a bracket 2a in one side of the panel storing sections in a rotatable manner and, at the same time, the output shaft and output sprocket 2a of the opening and shutting machine are coupled with coupling means 10 and 11 on a coaxial line.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shutter opening / closing drive device for vertically opening and closing a shutter curtain between a pair of left and right guide rails standing upright at a predetermined interval, and more particularly to a shutter opening / closing drive having an improved output system mechanism of the shutter opening / closing device. It relates to the device.

[0002]

8 is a front view showing a conventional electric winding shutter, FIG. 9 is a schematic vertical sectional side view of FIG. 8, and FIG.
FIG. 10 is an enlarged explanatory view of the shutter opening / closing drive device in FIG. 9. In the figure, reference numeral 1 denotes a pair of left and right guide rails standing upright on both sides of a shutter opening / closing opening. These guide rails 1 are U-shaped cross-section members having a vertically long opening on the opposing surface side. A box-shaped panel accommodating portion 2 is provided above the guide rail 1. An opening / closing device 3 including a geared motor and a speed reducer, and a winding shaft 4 which is rotationally driven by the opening / closing device 3 in the forward and reverse directions are housed in the panel housing portion 2. Therefore, the shutter curtain 5 is rotated by the forward / reverse rotation of the winding shaft 4.
The shutter curtain 5 is driven up and down between the guide rails 1 to be opened and closed.

Now, a specific related construction of the switch 3 and the take-up shaft 4 will be described. An output sprocket 31 is directly and integrally fitted to the output shaft 30 of the switch 3, and The output sprocket 31 side of the switch 3 is cantilevered to the bracket 2 a on one side of the panel storage section 2. An input sprocket 41 corresponding to the output sprocket 31 is integrally fitted to one end of the take-up shaft 4, and the take-up shaft 4 is supported by both side brackets 2 a of the panel storage section 2 on both sides. Has been done. The transmission chain 6 is connected to the output sprocket 31 on the switch 3 side and the input sprocket 41 on the winding shaft 4 side.
Is meshed and wound. Therefore, the rotation output of the switch 3 is transmitted to the winding shaft 4 through the output sprocket 31 → the transmission chain 6 → the input sprocket 41.

[0004]

The conventional shutter opening / closing drive device is configured as described above, and the output sprocket 31 is directly and integrally fitted to the output shaft 30 of the opening / closing device 3 with a speed reducer. Since the output sprocket 31 side of the above is cantilevered to the one side bracket 2a of the panel housing portion 2, there were various problems as follows. That is, (1) a large tension is applied to the conductive chain 6 according to the winding load of the shutter curtain 5 by the winding shaft 4. However, since the opening / closing machine 3 receives this tension, the opening / closing machine 3 is equipped with the tension. The speed reducer must be sized to match the tension, and as a result, the switchgear 3 becomes large in size and costly. (2) Despite the size of the switch 3 being increased as described above,
The opening / closing device 3 must be cantilevered on the bracket 2a on one side of the panel housing 2, and the plate thickness of the bracket 2a must be made considerably large in order to obtain sufficient supporting strength. (3) Since the output shaft 30 of the switch 3 and the output sprocket 31 are directly connected to each other, and the output sprocket 31 side is cantilevered on the bracket 2a, the switch support structure is provided. When such trouble occurs, it is very difficult to remove the switch 3.

The present invention has been made to solve the above problems, and its main purpose is to allow the switch to transmit only the torque without receiving the tension of the conductive chain, thereby enabling the switch to be operated. It is an object of the present invention to provide a shutter opening / closing drive device that can achieve downsizing and cost reduction of the speed reducer equipped with, and that can provide sufficient opening / closing device support strength without increasing the plate thickness of the opening / closing device support member.

Another object of the present invention is to provide a shutter opening / closing drive device which can easily and conveniently remove the opening / closing device when a trouble occurs in the opening / closing device.

[0007]

According to another aspect of the present invention, there is provided a shutter opening / closing drive device for winding a shutter curtain for opening / closing between the guide rails in a panel storage portion provided above the pair of left and right guide rails. A take-up shaft,
A shutter opening / closing drive device is provided in which an opening / closing device for driving the winding shaft in forward and reverse directions is arranged, and an output sprocket on the opening / closing device side and an input sprocket on the winding shaft side are meshed and wound with a conductive chain. Separating the output shaft of the switch and the output sprocket on the switch side;
The output sprocket is rotatably supported on a bracket on one side of the panel housing, and the output shaft of the switch and the output sprocket are coaxially connected by a coupling means.

According to another aspect of the present invention, there is provided a shutter opening / closing drive device, which comprises a first coupling fitted to and coupled to an output shaft of the opening / closing device, and an outer fitting portion which is slidably axially fitted to the first coupling. A second coupling that is engaged with the output sprocket on the opening / closing side and is removably fitted and engaged with the output sprocket; and a biasing force that biases the second coupling toward the output sprocket. The means constitutes the coupling means in claim 1.

[0009]

In the shutter opening / closing drive device according to the invention of claim 1, the output shaft of the opening / closing device and the output sprocket are separated, and both are coaxially connected by the coupling means and supported by the bracket on one side of the panel storage portion. The conductive chain is meshed and wound around the output sprocket and the input sprocket on the take-up shaft side,
The tension due to the conductive chain is received by the output sprocket and does not act on the switch, and the switch outputs only the rotational torque and transmits it to the output sprocket through the coupling means. The size can be reduced and the cost can be reduced. Also, the output sprocket and the output sprocket can be unitized by mounting them on a dedicated mounting frame, and the output sprocket side of the mounting frame can be fastened to the bracket on one side of the panel storage section. By supporting the frame as close to the bracket side as possible, it is possible to obtain sufficient supporting strength of the switch without increasing the plate thickness of the bracket.

In the shutter opening / closing drive device according to the second aspect of the present invention, the first coupling, which is fitted and coupled to the output shaft of the opening / closing device, is externally slidably engaged in the first coupling, and is connected to the opening / closing device side. The second coupling engaged with the output sprocket so that the output sprocket can be fitted and removed is urged toward the output sprocket by the urging means.
The output rotational torque of the switch can be reliably transmitted to the output sprocket, and when a problem occurs in the switch, the second coupling is moved backwards against the biasing means toward the switch. Then, the second coupling is disengaged from the output sprocket, so that only the switch can be easily removed.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 is a cross-sectional view of a main part of a shutter opening / closing drive device according to an embodiment of the present invention, and FIG. 2 is an explanatory view of the operation of FIG. 1. The same or corresponding parts as in FIGS. A duplicate description will be omitted. As shown in FIGS. 1 and 2, the output shaft 30 of the switch 3 and the output sprocket 31 are completely separated. The output sprocket 31 is mounted on the first mounting frame 7, and the switch 3 is mounted on the second mounting frame 8.

Here, the first and second mounting frames 7,
A specific related configuration of No. 8 will be described. First, the first mounting frame 7 is integrally bent and formed on both sides of the base portion 70 fixedly fixed to the bracket 2a on one side of the panel housing portion 2 in a direction perpendicular to each other. It is composed of both side piece portions 71, 72 and tip bending piece portions 73, 74 which are bent from the tips of the both side piece portions 71, 72 in the opposite direction. An engagement hole 75 is provided near the tip side of the one side piece 71. Further, the tip bending pieces 73, 74 are provided with notches 76, 77 as shown in FIG. The sprocket shaft 32 is previously attached to the center of the base portion 70 of the first attachment frame 7, and the output sprocket 31 is rotatably attached to the sprocket shaft 32. The output sprocket 31 has a snap ring (C-shaped stopper). It is locked by a wheel 33. In this way, the first sprocket 31 is attached to the first
The base portion 70 of the mounting frame 7 is fixedly attached to the bracket 2a. Next, the second mounting frame 8 has a base portion 80.
The bending piece portions 81 and 82 are integrally formed on both sides of the first mounting frame 7, and the bending piece portions 81 and 82 are formed at positions corresponding to the cutout portions 76 and 77 of the first mounting frame 7. There is. Then, the output shaft 30 of the switch 3 is rotatably pierced through the central portion of the base portion 80 via a bearing member,
In this state, the switch 3 is attached and fixed to the outside of the base portion 80.

As described above, the first coupling (coupling means) 10 is fitted and coupled to the output shaft 30 of the switch 3 which is preliminarily mounted and set on the second mounting frame 8. A second coupling (coupling means) 11 is externally fitted and engaged with the first coupling 10 so as to be slidable in the axial direction.

Here, a specific related construction of the output sprocket 31, the first and second couplings 10 and 11, and the output shaft 30 of the switch will be described. First, the output sprocket 31 has a boss portion 31a.
As shown in FIG. 5, a key portion 31b protruding in the radial direction is integrally formed on the outer peripheral surface portion of the. On the other hand, the first coupling 10 is fixed to the output shaft 30 of the switch with a set screw 9, and an outward stopper step 10a is integrally formed at the front end of the first coupling 10. ing. The outer peripheral surface of the first coupling 10 also has a key portion 10b protruding in the radial direction as shown in FIG.
Are integrally formed. On the other hand, the second coupling 11
The rear end portion has an inward stopper step portion 11 which can be engaged with and disengaged from the front end stopper step portion 10a of the first coupling 10.
a is integrally formed. Such a second coupling 1
On the inner peripheral surface of 1, the key portion 10 of the first coupling 10 is provided.
Key groove 1 slidably fitted in and engaged with b
1b (see FIG. 7) is formed, and this key groove 11b is formed.
Can also be engaged with and disengaged from the key portion 31b of the output sprocket 31.

In this way, the first coupling 10
On the other hand, the second coupling 11 axially slidably fitted and key-coupled is always biased in the forward direction (on the side of the output sprocket 31 in FIGS. 1 and 2) by the spring (biasing means) 12. ing.

Next, the assembly will be described. First, the first mounting frame 7 to which the output sprocket 31 has been mounted and set in advance is fixed to the bracket 2a on one side of the panel housing portion 2. Then, the second mounting frame 8 in which the switch 3, the first and second couplings 10 and 11, and the spring 12 are mounted and set in a unitized state in advance is attached to the first mounting frame 7.
Removably attached to. In this case, the bent piece 81 on one side of the second mounting frame 8 is removably inserted into and engaged with the engaging hole 75 of the one side piece 71 of the first mounting frame 7. After that, the other side bent piece portion 82 of the second mounting frame 8 is fitted into the notch 77 on the other side of the first mounting frame 7. At the time of this fitting, the second coupling 11 is attached to the boss portion 31 of the output sprocket 31.
It is inserted into a and keyed. In this state, the base portion 80 of the second mounting frame 8 is detachably tightened and fixed to the tip bending piece portion 74 on the other side of the first mounting frame 7 with the set screw 13. As a result, the assembly is completed, and in this state, the output shaft 30 of the switchgear and the output sprocket 31 are maintained coaxially connected by the first and second couplings 10 and 11. The output sprocket 3
It goes without saying that the gear 1 is linked with the input sprocket 41 on the winding shaft 4 side shown in FIG.

Next, the operation will be described. When the switch 3 is activated, the rotational torque output from the output shaft 30 is applied to the first coupling 10 and the second coupling 11.
The output sprocket 31 is rotationally driven by being transmitted to the output sprocket 31 via. As a result, the winding shaft 4 of FIG. 10 is rotationally driven, and the shutter curtain 5 is wound and rewound by the winding shaft 4.

When the shutter curtain 5 is wound and unwound, the output sprocket 31 receives a large tension generated in the conductive chain 6 in FIG. 10 and does not act on the switch 3, so that the switch 3 rotates. It only outputs the torque and transmits it to the output sprocket 31 via the coupling means 10, 11.

Here, the output sprocket 31 separated from the switch output shaft 32 and receiving the tension by the conduction chain 6 can shorten the distance L from the base portion 70 of the first mounting frame 7 as described above. As a result, sufficient strength corresponding to the tension can be obtained, so that the plate thickness of the mounting frame 7 and the bracket 2a can be reduced.

When a trouble occurs in the switch 3, if the second coupling 11 is moved backwards against the spring 12 after removing the setscrew 13, the second coupling 11 will be removed. Since it comes off from the output sprocket 31, the bent piece 81 on one side of the second mounting frame 8 is pulled out from the engaging hole 75 of the first mounting frame 7 so that only the opening / closing device 3 side can be easily removed. Therefore, it is not necessary to remove the output sprocket 31.

[0021]

As described above, according to the first aspect of the present invention, the output shaft of the switch and the output sprocket are separated, and both are coaxially connected by the coupling means.
Since the conductive chain is meshed and wound around the output sprocket supported by the bracket on one side of the panel housing and the input sprocket on the take-up shaft side, the output sprocket receives the tension from the conductive chain and acts on the switch. Instead, the switch outputs only the rotational torque and transmits it to the output sprocket via the coupling means, so that the speed reducer of the switch can be downsized and the cost can be reduced. Also, the switch and the output sprocket can be unitized by mounting them on a dedicated mounting frame, and the output sprocket side of the mounting frame can be fastened to the bracket on one side of the panel storage section. By supporting the frame as close to the bracket side as possible, there is an effect that sufficient supporting strength of the output sprocket and the switch can be obtained without increasing the plate thickness of the bracket. ..

According to the second aspect of the present invention, the first coupling is axially slidably externally fitted and engaged with the first coupling, and is removably fitted to the output sprocket on the switchgear side. Since the second coupling engaged in the engagement is biased to the output sprocket side by the biasing means, the output rotational torque of the switch can be reliably transmitted to the output sprocket, and the trouble of the switch can be prevented. At the time of occurrence, if the second coupling is retracted and slid toward the opening / closing device side against the biasing means, the second coupling is disengaged from the output sprocket, so that only the opening / closing device is opened. The effect is that it can be easily removed.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part of a shutter opening / closing drive device according to an embodiment of the present invention.

FIG. 2 is a diagram for explaining the operation of FIG.

3 is a plan view of a first mounting frame in FIGS. 1 and 2. FIG.

FIG. 4 is a front view of FIG.

FIG. 5 is an end view of the output sprocket in FIGS. 1 and 2 as viewed from the boss side. ..

6 is an end view of the first coupling in FIGS. 1 and 2. FIG.

7 is an end view of the second coupling in FIGS. 1 and 2. FIG.

FIG. 8 is a front view showing a conventional electric winding shutter.

9 is a schematic vertical sectional side view of FIG.

FIG. 10 is an enlarged explanatory view of the shutter opening / closing drive device in FIG. 9.

[Explanation of symbols]

 1 Guide Rail 2 Panel Storage 2a Bracket 3 Switch 4 Winding Shaft 5 Shutter Curtain 6 Conductive Chain 7 Mounting Frame 8 Mounting Frame 10 First Coupling (Coupling Means) 11 Second Coupling (Coupling Means) 12 Spring (biasing means) 31 Output sprocket

Claims (2)

[Claims] 1. A take-up shaft for a shutter curtain that opens and closes between the guide rails, and a take-up shaft in a panel storage portion provided above a pair of left and right guide rails that stand upright on both sides of a shutter opening / closing opening. An opening and closing device for driving the forward and reverse rotations of the opening and closing device, and a shutter opening and closing drive device in which a conductive chain is meshed and wound around an output sprocket on the opening and closing device side and an input sprocket on the winding shaft side. A shaft is separated from the output sprocket on the switch side, the output sprocket is rotatably supported by a bracket on the one side of the panel storage portion, and the output shaft of the switch and the output sprocket are coaxial with each other. A shutter opening / closing drive device characterized by being connected by means of coupling means. 2. The coupling means is a first coupling fitted and coupled to an output shaft of an opening / closing machine, and is externally engaged with the first coupling so as to be slidable in the axial direction. A second coupling that is removably fitted into and engaged with the output sprocket on the switch side, and a biasing means that biases the second coupling toward the output sprocket. The shutter opening / closing drive device according to claim 1.