JP2003106077A - Manual releasing mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manual releasing mechanism capable of facilitating the operation for releasing a braking state as an engaging and connecting state with an opening and shutting body and an opening and shutting machine and the operation for returning to the braking state. SOLUTION: The manual releasing mechanism includes a controlling piece 16 having an energizing means energized to a direction for making the opening and shutting body 3 and the opening and shutting machine 7 as a separated state, a slider 29 connected to the controlling piece 16 through a wire 18 in a slidable manner, a roller 33 put on the slider 29 through a shaft 31, a freely oscillating lever 35 having a link lever 36 connecting one end to the shaft 32, a ratch claw 39 engaging with the roller 33 and holding the controlling piece 16 at one moving position against energizing force through the wire 18 and a push-button 45 releasing a state engaging with the roller 33 by oscillating the ratch claw 39.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is applied to a mechanical device such as a manual closing device for an opening / closing body which is disposed in an opening portion or an indoor partition portion of a structure such as a building and closes the opening portion. The present invention relates to a manual release mechanism.

[0002]

2. Description of the Related Art Opening / closing devices, such as shutter devices for opening / closing a shutter curtain, which are arranged in an opening portion of a structure such as a building or an indoor partition portion and close or partition the opening portion, are A manual closing device is provided as a mechanical device for manually closing the shutter curtain.

In this manual closing device, a shutter curtain, which is housed in a wound state above a building, is lowered in the event of a fire or an emergency such as a power failure to close the building opening and indoor compartments, and in the case of a fire. This is to prevent fire spread and damage to other parts of the shutter curtain. It is installed between the shutter curtain side and the opening / closing machine that drives the shutter curtain to open / close (elevate), and the shutter curtain and the opening / closing machine work together. It is connected to a braking device that is switched between a state in which the drive of the switch is transmitted to the shutter curtain and a state in which the drive of the switch is disconnected without being transmitted to the shutter curtain. That is, the shutter curtain that is opened and closed by the opening and closing device is separated from the opening and closing device, that is, the braking device is operated, and the shutter curtain is lowered by its own weight from the state where it is housed above to close the building opening and the like. ing.

Such a manual closing device is disclosed in Japanese Unexamined Patent Publication No. 9-324590, and according to this manual closing device, by pressing a push button, an opening / closing device of a braking device and a shutter curtain are provided. The connection state (brake state) is released. That is, in this manual closing device, an inner lever is linked to an oscillating operation lever whose upper end is pivotally supported, and a wire having a urging force in the pulling direction extending from the control device is provided in the middle of the inner lever. Locking means for connecting the inner lever to the locked state is provided to suppress the pulling force of the wire, and the push button is connected to the locking means. The means slides to release the engagement with the inner lever, the operation lever held in the engaged state is released, and the braking device is pulled and urged.
As a result, the interlocking connection state between the opening / closing device and the shutter curtain is released, the brake state of the shutter curtain in the housed state is released, and the shutter curtain descends by its own weight.

[0005]

However, in the above-mentioned conventional manual closing device, when the shutter curtain is lowered and closed, that is, when the brake state is released, the push button is pressed, but the wire is always inserted. Since the locking means to which the biasing force of the pulled state is applied has a barb-shaped configuration, it becomes a sliding operation, and frictional resistance occurs due to surface contact with the hole portion that holds the barb-shaped locking means,
Due to this frictional force, the locking means may not slide easily, and a relatively large force may be required to perform the operation. Since the operation becomes difficult due to such a large frictional force, there is a possibility that a smooth operation cannot be performed in an emergency and the shutter curtain lowering operation cannot be performed.

After the brake state is released, the operation of returning to the brake state is performed again. For this return operation, the operation lever is used, and the operation lever is swung to pull the wire to lock it. However, the frictional force is large as described above, and the operating force of the operating lever may be required.

Further, in a normal state, the manual closing device is in a tension state in which the urging force in the pulling direction is constantly applied by the braking device and the wire is stretched without slack. Since there is a risk of the wire stretching, we regularly perform maintenance to check and adjust the tension of the wire. However,
In the above-mentioned manual closing device, there is no mechanism for adjusting the tension of the wire, and the wire is adjusted as a whole maintenance including the opening / closing device and the shutter curtain, that is, the inspection / adjustment of the opening / closing device and the braking device. Since it has been performed as described above, it has been a complicated work, and it has been desired that the inspection and adjustment for the tension of the wire can be simplified and easily performed.

Therefore, in order to solve the above-mentioned problems, the present invention provides an operation for releasing the braking state in which the opening / closing body such as a shutter curtain and the opening / closing device are linked and operating, and an operation for returning to the braking state. The purpose is to obtain a manual release mechanism that is effectively applied to a manual closing device that can be easily performed. Further, in the case of a mechanical device capable of adjusting the tensioned state by connecting the manual closing device and the brake device on the opening / closing side with a wire, the tensioned state can be easily adjusted. It is intended to provide a manual release mechanism.

[0009]

[Means for Solving the Problems] Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments. In the manual release mechanism according to the first aspect of the present invention, one end is pivotally supported and is swingable, and the lever which is always biased in one swing direction by an external biasing force is disengaged from each other. An engaging mechanism section configured by a free roller and a claw section, one of the roller and the claw section being provided in the lever, and restricting the swing of the lever in a mutually engaged state; And a release mechanism portion that moves the claw portion or the roller in the engaged state to the roller or the claw portion provided in the lever to release the engaged state from each other.

According to this structure, since the structure of the engaging mechanism portion is the roller and the pawl portion, when the swinging restriction of the lever is released, the engagement state of the roller with the pawl portion is released. As a result, the rollers roll and the mutual engagement state is released, and the operation can be performed with a light operation force. Further, even when the swing of the lever is restricted, the claw portions are engaged by rolling the roller, so that the operating force for engaging each other is reduced.

According to a second aspect of the present invention, in the manual release mechanism, the slider is always urged in one sliding direction by an urging force from the outside, and one end thereof is pivotally supported so that the slider can swing.
A lever that is connected to the slider via a link rod and is always biased in one swing direction by the biasing force;
An engaging mechanism portion configured to include a roller and a claw portion that can be engaged and disengaged with each other, the roller being provided with one of the roller and the claw portion, and restricting the swing of the lever in a mutually engaged state;
And a release mechanism section for moving the claw section or the roller in the engaged state to the roller or the claw section provided in the lever with respect to the engagement mechanism section to release the engagement state with each other. To do.

According to this structure, since the structure of the engaging mechanism portion is the roller and the claw portion, when the swinging restriction of the lever is released, the engagement state of the roller with the claw portion is released. As a result, the rollers roll and the mutual engagement state is released, and the operation can be performed with a light operation force. Further, even when the swing of the lever is restricted, the claw portions are engaged by rolling the roller, so that the operating force for engaging each other is reduced. Further, since the roller or the claw portion of the engagement mechanism portion is provided on the lever, it is possible to engage the lever and regulate the swing regardless of play or play due to the connection configuration with the slider or the link rod. .

According to a third aspect of the present invention, in the manual release mechanism, the slider is always urged in one sliding direction by an urging force from the outside, one end of which is pivotally supported so that the slider can swing.
A lever that is connected to the slider via a link rod and is always biased in one swing direction by the biasing force;
The slider is provided with a roller and a claw that can be engaged and disengaged from each other. Any one of the roller and the claw is provided on the slider, and the slider is restrained from sliding in the mutually engaged state, and the lever swings. And a release mechanism section for moving the claw portion or the roller in the engaged state to the roller or the claw portion provided on the slider with respect to the engagement mechanism section to release the engagement state of each other. And are provided.

With this structure, since the structure of the engaging mechanism portion is the roller and the claw portion, when the swinging restriction of the lever is released, the engagement state of the roller with the claw portion is released. As a result, the rollers roll and the mutual engagement state is released, and the operation can be performed with a light operation force. Further, even when the swing of the lever is restricted, the claw portions are engaged by rolling the roller, so that the operating force for engaging each other is reduced.

A manual release mechanism 20 according to a fourth aspect of the present invention comprises a slidable slider 29 which is constantly urged in one sliding direction by an urging force from the outside, and a shaft 31 fixedly mounted on the slider 29. A roller 33 rotatably mounted on the shaft 33, and a link rod 36 having one end connected to the shaft 31 of the roller 33. The other end of the link rod 36 is located at an intermediate portion above the position of the shaft 31. It has a swingable lever 35 that is attached and connected, and has an upper end pivotally supported, and a claw portion 41 that engages with the roller 33 at the swing tip, and together with the roller 33 resists the biasing force. A swingable latch claw 39 that holds the slider 29 in the lower position, and a push button 45 that swings the latch claw 39 to release the engagement state with the roller 33.
And are provided.

According to this structure, the push button 45
By pressing, the engagement between the latch claw 39 and the roller 33 is released, and the holding state of the slider 29 is released. The roller 33 provided on the slider 29 is
When the engagement with the latch claw 39 is released, the latch claw 39 rolls to release the engagement with each other, so that the operation for releasing the engagement is performed with a light operation force. That is, the pressing operation by the push button 45 becomes easy. Further, when the roller 33 and the latch claw 39 are engaged with each other, the rolling operation of the roller 33 also reduces the operation force when the rollers 33 and the latch claw 39 engage with each other, that is, the lever 35. The operation of releasing and engaging by means of is easy.

According to a fifth aspect of the present invention, there is provided a manual release mechanism 50 in which a slider 51 is slidably provided, an end which is pivotally supported by the slider 51 and is swingable, and which is extended with respect to the pivotally supported portion. An adjusting piece 57 which is constantly applied with an urging force from the outside through one part in one swinging direction and a slider 51, which is provided on the slider 51 and swings the adjusting piece 57 to adjust an inclination angle with respect to the slider 51. Adjusting means 67
And a link rod 72, one end of which is connected to the shaft supporting portion of the adjusting piece 57, and the other end of the link rod 72 is axially connected and connected to a middle portion above the position of the shaft supporting portion. A swingable lever 71 having an upper end pivotally supported, and the lever 7
A roller 77 that is disposed close to the swinging end of the lever 71 and is slidable along the longitudinal direction of the lever 71; and a roller 77 that is provided at the swinging end of the lever 71 and engages with the roller 77. A latch claw 75 that restricts the swing of the lever 71 against the biasing force, and a push button 83 that slides the roller 77 to release the engagement state with the latch claw 75. It is characterized by doing.

According to this structure, the push button 83
When the engagement state with the latch claw 75 is released, the roller 77 interlocked with the pressing force of the roller 77 rolls relative to the latch claw 75 and is released from the mutual engagement state. The operation can be performed with a light operation force, that is, the pressing operation by the push button 83 becomes easy. Also, the roller 7
7 also engages the latch claw 75 with each other, the roller 77 rolls, so that the operation force when engaging with each other is reduced, that is, the return operation by the lever 71 is performed. It will be easy. Further, since the adjusting piece 57 for receiving the urging force from the outside is swingably provided on the slider 51 and the adjusting means 67 for oscillating the adjusting piece 57 is provided, the receiving condition of the urging force can be adjusted. Therefore, even if there is a change with time, it is possible to easily perform maintenance, that is, it is possible to easily improve the degree of receiving the biasing force.

According to a sixth aspect of the present invention, there is provided a manual release mechanism 100 in which a slider 51 is slidably provided, an end pivotally supported by the slider 51 and swingably provided, and an end extending with respect to the axially supported portion. An adjusting piece 57 which is constantly applied with an urging force from the outside through one part in one swinging direction and a slider 51, which is provided on the slider 51 and swings the adjusting piece 57 to adjust an inclination angle with respect to the slider 51. Adjusting means 6
7 and a link rod 36, one end of which is connected to the pivotal support portion of the adjusting piece 57, and the other end of the link rod 36 is pivotally attached and connected to a middle portion above the position of the pivotal support portion. ,
An oscillating lever 35 having an upper end rotatably supported, a roller 33 rotatably mounted around the rotatably supporting portion of the adjusting piece 57, and a claw portion 41 engaging with the roller 33 are oscillating tips. A swingable latch claw 39 that holds the slider 51 at a lower position together with the roller 33 and holds the slider 51 against the biasing force; and the roller 33 by swinging the latch claw 39. And a push button 45 for releasing the engaged state.

With this structure, like the manual release mechanisms 20 and 50 described above, the roller 33 provided on the slider 51 is released from the engagement state with the latch claw 39 when the latch claw 39 is released. With respect to each other, since they roll to release the engaged state from each other, the operation for releasing the engagement can be performed with a light operation force, that is, the pressing operation by the push button 45 becomes easy. Similarly, the roller 33 and the latch claw 3
Since the roller 33 is also rolled when engaging with each other, the operating force when engaging with each other is reduced, that is, the returning operation by the lever 35 is facilitated. In addition, the adjustment piece 5 which receives a biasing force from the outside
7 is swingably provided on the slider 51, and the adjusting means 67 capable of swinging the adjusting piece 57 is provided. Therefore, it is possible to adjust the degree of receiving the urging force, and even if there is a change with time. Therefore, it is possible to easily perform maintenance, that is, it is possible to easily improve the condition for receiving the biasing force.

According to a seventh aspect of the present invention, in the manual release mechanism 120, a slidable slider 128, which is always urged in one sliding direction by an urging force from the outside, and one end of the slider 128 via a spindle. Is provided with a link rod 127 connected to
The other end of the link rod 127 is rotatably attached to a swingable lever 126 whose upper end is rotatably supported and which is rotatably connected to a middle portion of the link rod 127 which is located above the position of the shaft. Has a roller 129 provided on the link rod 12 and a claw portion 124 that engages with the roller 129 at the swinging tip.
7 through the slider 128 and the roller 129 against the biasing force, and a swingable latch claw 121 that holds the lever 126 together with the roller 129, and the latch claw 121 is swung to engage the roller 129. And a push button 45 for releasing.

According to this structure, the push button 45
The latch claw 121 that swings when pressed by the roller 129
When the engagement state with the roller 129 is released, the rollers 129 roll with respect to the latch claw 121 to release the engagement state with each other, so that the engagement release operation can be performed with a light operation force. That is, the pressing operation by the push button 45 becomes easy. Also, when the roller 129 and the latch claw 121 are engaged with each other, the roller 129 rolls, so that the operation force at the time of engagement with each other is reduced, that is, by the lever 126. The return operation becomes easy. Further, since the lever 126 is provided with the roller 129 and the latch claw 121 is engaged with the roller 129, the lever 126 is engaged and rocked regardless of play or play due to the connection configuration with the slider 128 and the link rod 127. It is possible to regulate the
When the swing is restricted, the lever 126 maintains the holding state without swaying.

The manual release mechanism 20 according to claim 8 is provided in the braking device 11 for interlocking connection and disconnection between the opening / closing body 3 and the opening / closing device 7, and when moved to one side, the opening / closing body 3 and the opening / closing device are connected. 7 is interlockingly connected, and when moved to the other side, the opening / closing body 3 and the opening / closing machine 7 are separated from each other, and the opening / closing body 3 and the opening / closing machine 7 are urged in the other moving position direction in a separated state. And a control piece 16 having a biasing means for activating the control piece 16, which is arranged at a position separated from the control piece 16 and is connected to the control piece 16 via a flexible elongated body 18. A slider 29 slidable in the biasing direction by means, a roller 33 rotatably mounted on a shaft 31 fixed to the slider 29, and a link rod 36 having one end connected to the shaft 31 of the roller 33. And the other end of the link rod 36 has the shaft 31 Is connected is rotatably attached to the intermediate portion of the above the position, the swingable lever 35 to the upper end is pivotally supported
And has a claw portion 41 that engages with the roller 33 at the swinging tip, holds the slider 29 at the lower position together with the roller 33, and moves the biasing means of the biasing means through the flexible elongated body 18. A swingable latch claw 39 that holds the control piece 16 in the one moving position against the biasing force, and a push button that swings the latch claw 39 to release the engagement state with the roller 33. 45 is provided.

With such a structure, in the event of an emergency such as a fire, a push button is used to close the opening / closing body 3 such as the shutter curtain arranged in the building opening or the indoor compartment. By pressing 45, the latch claw 39
By releasing the engagement with the roller 33, the interlocking connection state between the opening / closing device 7 and the opening / closing body 3 is released via the control piece 16. Then, when the engagement state with the latch claw 39 is released, the roller 33 provided on the slider 29 rolls with respect to the latch claw 39 and is released from the engagement state with each other. The operation of releasing the engagement can be performed with a light operation force, that is, the pressing operation by the push button 45 becomes easy. Further, when the roller 33 and the latch claw 39 are engaged with each other, the rolling operation of the roller 33 also reduces the operation force when the rollers 33 and the latch claw 39 engage with each other, that is, the lever 35. This makes it easy to restore the interlocking connection state between the switch 7 and the switch 3 by.

A manual release mechanism 50 according to claim 9 is also provided.
Is provided in the braking device 11 for interlocking connection and disconnection between the opening / closing body 3 and the opening / closing device 7, and when moved to one side, interlocks the opening / closing body 3 and the opening / closing device 7 and is moved to the other side. And the opening / closing body 3 and the opening / closing device 7 are separated from each other, and the control piece 16 has a biasing means for biasing the opening / closing body 3 and the opening / closing device 7 in the other moving position direction in which the opening / closing body 3 and the opening / closing device 7 are separated.
A slider 51 disposed at a position separated from the control piece 16 and slidably provided in a biasing direction of the control piece 16 by a biasing means; and a slider 51 pivotally supported by the slider 51 and swingably provided. And an adjusting piece 57 connected to the control piece 16 via the flexible elongated body 18 at an end portion extending with respect to the shaft supporting portion, and the adjusting piece 57 provided on the slider 51. An adjusting means 67 for swinging to adjust the tilt angle with respect to the slider 51 and a link rod 72 having one end connected to the shaft supporting portion of the adjusting piece 57 are provided, and the other end of the link rod 72 serves as the shaft supporting portion. A swingable lever 71, which is pivotally connected to an intermediate portion above the position and has an upper end pivotally supported, and a lever 71 which is disposed close to the swing end side of the lever 71 A roller 77 that is slidable along the direction, Provided oscillating end of the serial lever 71,
Engagement with the latch claw 75 that engages with the roller 77 and restricts the swing of the lever 71 against the urging force of the urging means, and the roller 77 by slidingly moving the roller 77. And a push button 83 for canceling the state.

According to this structure, the push button 83
When the engagement state with the latch claw 75 is released, the roller 77 interlocked with the pressing force of the roller 77 rolls relative to the latch claw 75 and is released from the mutual engagement state. The operation can be performed with a light operation force, that is, the pressing operation by the push button 83 becomes easy. Also, the roller 7
7 also engages the latch claw 75 with each other, the roller 77 rolls, so that the operation force when engaging with each other is reduced, that is, the return operation by the lever 71 is performed. It will be easy.

The adjusting piece 57 connected to the wire 18 is also provided.
Is provided on the slider 51 so as to be swingable, and the adjusting means 67 capable of swinging the adjusting piece 57 is provided.
8 can be adjusted, and even if the wire 18 may stretch due to changes over time, maintenance can be easily performed, that is, the tension of the wire 18 can be easily improved. The risk of malfunction of the braking device 11 side is eliminated.

The manual release mechanism 100 according to claim 10 is
The braking device 11 for interlocking connection and disconnection between the opening / closing body 3 and the opening / closing device 7 is provided, and when moved to one side, the opening / closing body 3 and the opening / closing device 7 are interlockingly connected, and when moved to the other side, A control piece 16 having an urging means that separates the opening / closing body 3 from the opening / closing device 7 and urges the opening / closing body 3 from the opening / closing device 7 in the other moving position direction in a separated state;
A slider 51 disposed at a position separated from the control piece 16 and slidably provided in a biasing direction of the control piece 16 by a biasing means; and a slider 51 pivotally supported by the slider 51 and swingably provided. An adjusting piece 57 connected to the control piece 16 via a flexible elongated body 18 at an end portion extending with respect to the shaft supporting portion; and a slider 51 provided on the adjusting piece 57 to swing the adjusting piece 57. Adjusting means 67 for adjusting the tilt angle with respect to the slider 51, and a link rod 36, one end of which is connected to the shaft supporting portion of the adjusting piece 57.
The other end of 6 is pivotally attached to and connected to an intermediate portion above the position of the shaft support portion, and the upper end is pivotally supported by a swingable lever 35, and the shaft support portion of the adjustment piece 57 is a support shaft. Has a roller 33 that is rotatably mounted and a claw portion 41 that engages with the roller 33 at the swinging tip, and together with the roller 33,
A swingable latch that holds the slider 51 at a lower position and holds the control piece 16 at the one moving position against the urging force of the urging means via the flexible elongated body 18. The pawl 39 and the roller 3 by swinging the latch pawl 39
And a push button for releasing the engagement state with 3.

According to this structure, the slider 5 is provided in the same manner as the manual release mechanisms 20 and 50 according to the eighth and ninth aspects.
When the engagement state with the latch claw 39 is released, the roller 33 provided on the first rolls with respect to the latch claw 39 and is released from the mutual engagement state. The operation can be performed with a light operation force, that is, the pressing operation by the push button 45 becomes easy. Similarly, roller 3
Since the roller 33 rolls also when the latch 3 and the latch claw 39 are engaged with each other, the operation force at the time of engagement with each other is reduced, that is, the return operation by the lever 35 is performed. It will be easy.

The adjusting piece 57 connected to the wire 18 is also provided.
Is provided on the slider 51 so as to be swingable, and the adjusting means 67 capable of swinging the adjusting piece 57 is provided.
8 can be adjusted, and even if the wire 18 may stretch due to changes over time, maintenance can be easily performed, that is, the tension of the wire 18 can be easily improved. The risk of malfunction of the braking device 11 side is eliminated.

The manual release mechanism 120 according to claim 11 is
The braking device 11 for interlocking connection and disconnection between the opening / closing body 3 and the opening / closing device 7 is provided, and when moved to one side, the opening / closing body 3 and the opening / closing device 7 are interlockingly connected, and when moved to the other side, A control piece 16 having an urging means that separates the opening / closing body 3 from the opening / closing device 7 and urges the opening / closing body 3 from the opening / closing device 7 in the other moving position direction in a separated state;
The control piece 1 is arranged at a position separated from the control piece 16.
6 and a slider 128 slidable in the urging direction of the urging means of the control piece 16 and one end of the slider 128 via a support shaft. A swingable lever 126 that is provided with a link rod 127, and the other end of the link rod 127 is pivotally connected to an intermediate portion above the shaft position and the upper end thereof is pivotally supported.
A roller 129 rotatably provided at the swing end of the lever 126, and a claw portion 124 engaging with the roller 129.
At the swinging tip, holds the lever 126 together with the roller 129, connects the link rod 127 and the slider 12 to each other.
8 and the flexible elongated member 18 to prevent the urging force of the urging means from holding, and to swing the latch claw 121 for holding the control piece 16 in the one moving position, and the latch claw 121. And a push button 45 that swings to release the engagement state with the roller 129.

According to this structure, the push button 45
The latch claw 121 that swings when pressed by the roller 129
When the engagement state with the roller 129 is released, the rollers 129 roll with respect to the latch claw 121 to release the engagement state with each other, so that the engagement release operation can be performed with a light operation force. That is, the pressing operation by the push button 45 becomes easy. Also, when the roller 129 and the latch claw 121 are engaged with each other, the roller 129 rolls, so that the operation force at the time of engagement with each other is reduced, that is, by the lever 126. The return operation becomes easy. Further, since the lever 126 is provided with the roller 129 and the latch claw 121 is engaged with the roller 129, the lever 126 is engaged and rocked regardless of play or play due to the connection configuration with the slider 128 and the link rod 127. It is possible to regulate the
When the swing is restricted, the lever 126 maintains the holding state without swaying.

[0033]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the manual release mechanism of the present invention will be described for each embodiment. In each embodiment described below, the manual release mechanism of the present invention will be described as an example applied to a shutter device arranged in a building or the like.

First Embodiment FIG. 1 is a schematic view showing a shutter provided with a manual release mechanism according to the first embodiment of the present invention, FIG. 2 is a side sectional view of the manual release mechanism, and FIG. 3 is the same. FIG. 4 is an exploded perspective view showing a main part of the manual release mechanism, FIG. 4 is a side sectional view of the manual release mechanism, and FIG. 5 is a rear view of the manual release mechanism.

As shown in FIG. 1, the opening / closing device is a shutter device 1 provided in an opening of a building and capable of closing the opening, and a shutter curtain as an opening / closing body constituting the shutter device 1. 3 has a configuration in which, for example, a large number of substantially plate-shaped slats that are long in the left-right width direction are connected in the up-down direction, and are housed in a wound state in a housing part 4 arranged at the upper edge of the building opening 2. It The shutter curtain 3 is supported at its left and right edges by guide rails 5 arranged in pairs at the left and right edges of the building opening 2, and is guided to move up and down.

In the storage portion 4 of the shutter curtain 3,
An opening / closing device 7 configured by an electric motor and a winding shaft 8 for winding the shutter curtain 3 are provided, and a sprocket 10 and the like for connecting them are configured. Further, the opening / closing machine 7 is provided with a braking device 11 that is interlocked with the winding shaft 8, that is, transmits the driving force of the opening / closing machine 7 as a drive source to the winding shaft 8.

The braking device 11 has, for example, a swingable control rod 12, which is normally placed in an upright state so that the opening / closing device 7 and the winding shaft 8 are interlockingly connected to each other. It is possible to transmit the drive of 7 to the winding shaft 8 side,
When the switch 7 is stopped, the rotation of the winding shaft 8 is also stopped, that is, the braking state is set. Further, by tilting the control rod 12, the opening / closing machine 7 and the winding shaft 8 side are separated from each other so that the drive of the opening / closing machine 7 is not transmitted to the winding shaft 8 side, that is, the winding shaft 8 side is The brake state is released,
It is in a free state, and the winding shaft 8 is in a freely rotatable state.

The braking device 11 includes a brake releasing device 14
Is attached, and the above-described tilting operation of the control rod 12 is performed. This brake release device 14 is a manual closing device 2
It has a control piece 16 which is a part of 0, is slidable, and is provided with an urging member (not shown) formed of a coil spring or the like as urging means connected to the control piece 16.

The control piece 16 is abuttable on the control rod 12 and does not come into contact with the control rod 12 when it is positioned at one of the sliding positions, that is, the control rod 12 remains in the upright state and is in the braking state. Is maintained, and when it is in the other slide position, it abuts against the control rod 12 and tilts it, that is, the brake state is released. The biasing member connected to the control piece 16 has a biasing force that constantly biases the control piece 16 in the other slide position direction.

The control piece 16 is connected with a wire 18 as a flexible elongated body, and through this wire 18,
It is connected to a slider 29 that constitutes a manual closing device 20 as a manual release mechanism described later, and is normally pulled to one slide position. That is, the control piece 16 is biased in the other slide position direction by the biasing member.
The slider 29 side pulls the biasing force of this biasing member against the biasing force and holds it in one slide position so that it does not abut against the control rod 12, that is, the control rod 12 remains upright. To do.

The main body of the manual closing device 20 is arranged, for example, on the side wall surface of the building opening such as one guide rail side. In the main body of the apparatus, a slider 29, a lever 35, a roller 33 and a latch claw 39 that form an engagement mechanism, and a push button 45 that forms a release mechanism are provided in an operation case 21 fixed to a wall surface. Is roughly composed of.

The operation case 21 has a mechanism portion 22 which constitutes each of the above-mentioned parts, and an operation portion 23 which has an open front surface and a lock door 24 which is openably and closably provided on the front surface.
And are provided side by side, and each part 22 and 23 is internally partitioned. In the operation case 21 on the operation unit 23 side,
As shown in FIGS. 1 and 2, the shutter curtain 3 described above
A base plate 26 having a switch 25 for performing opening / closing operation is disposed, that is, it has a switch 25 electrically connected to the opening / closing device 7, and the opening / closing device 7 can be driven and operated. It is possible to open (rise), close (fall) and stop.

A rupturable window 27 is arranged in the lower half of the lock door 24. This window 27 is formed in a substantially circular shape in the present embodiment, and corresponds to a position where a push button 45, which will be described later, is arranged in the door 24, that is, the door 2 with lock.
The window 27 can be broken and the push button can be pressed without opening 4.

Next, the slider 29 is slidably attached to both side plates 22a of the mechanism portion 22 inside the operation case 21 in slit-shaped elongated guide holes 30 formed in the vertical direction. In the present embodiment, the slider 29 is a plate-shaped member that is slightly elongated in the vertical direction, and has a shaft 31 fixed to the lower end, and both ends of the shaft 31 are attached through the elongated guide holes 30. . The end of the wire 18 connected to the control piece 16 is connected to the upper end of the slider 29. In addition,
The wire 18 penetrates the upper end of the operation case 21, extends upward, is arranged along the wall surface of the building, and extends to the brake release device 14.

Next, the roller 33 is rotatably mounted on the end of a shaft 31 fixed to the slider 29.

Next, the lever 35 has one side exposed on the surface of the mechanism portion of the operation case 21, and the upper end is pivotally supported and the lower end is swingable with respect to the mechanism portion 22 of the operation case 21. And is attached to the side plate 22a. One side of the lever 35 is substantially flush with the lock door 24 of the operation case 21 in the vertical state.

A link rod 36 is connected to a middle portion of the lever 35 via a shaft 37. Link rod 3
6 is a shaft 3 whose one end is provided at the lower end of the slider 29.
1 and the other end is connected to the middle of the lever 35. As shown in FIG. 4, the link rod 36 is attached to the lever 35 and the slider 29 such that the position of the other end (the shaft 37) is upward with respect to the one end.

Next, the latch claw 39 is composed of a plate member formed in a substantially L shape, and the lower part thereof is attached to the operation case 21 via the support shaft 40 so as to be swingable, and extends upward. It has a hook-shaped claw portion 41 at the swinging tip. Also,
On one side of the lower portion of the latch claw 39, a pressing plate 42 extends in a direction orthogonal to the plate surface. This pressing plate 42
Is formed in a substantially L shape, and as shown in FIGS. 2 and 5,
The mechanism part 22 in the operation case 21 extends to the back side of the base plate 26 in the operation part 23.

In the latch claw 39, the claw portion 41 at the swinging tip end is engaged with the roller 33.
This engaged state is a state in which the slider 29 is held so as to be located at the lower end of the elongated guide hole 30. The shape of the claw portion 41 is a slanted portion 41a whose upper side is slanted, and the lower side in a state in which the roller 33 is engaged with the slanted portion 41a via a sharp tip is the moving direction of the slider 29. Is formed in a substantially U-shape with the lower portion of the latch claw. Further, a biasing means 43 such as a coil spring is attached to the latch claw 39, and a biasing force works so that the engagement state with the roller 33 can be maintained.

Next, the push button 45 is used for the operation case 21.
It is arranged below the operation unit 23. The push button 45 is a member formed in a substantially L shape by a pressing portion 46 formed in a rectangular plate shape and a base portion 47. The push button 45 has a through hole 47 a at one longitudinal end of the base portion 47 and other base portions 47. A contact piece 48 is extended at the end.

The push button 45 is used for the operation unit 2
3 is located below the above-mentioned switches 25 and is supported by a support bracket 49 fixed to a base plate 26 on which the switches 25 are provided, one end of which is pivotally supported through a through hole 47a and the other end of which is a base. The plate 26 is swingable in a direction orthogonal to the plate surface of the plate 26. Abutment piece 48
Has a bent front edge, extends through the notch 26a formed on the side edge side of the base plate 26 and extends to the back surface of the base plate 26, and its front end faces and abuts the pressing plate 42 of the latch claw 39. It is like this. That is, when the pressing portion 46 of the push button 45 is pressed, the contact piece 48 presses the pressing plate 42, thereby swinging the latch claw 39. Further, in the push button 45, the pressing portion 46 causes the window 2 of the lock door 24 to be closed while the lock door 24 is closed.
Located on the back of 7.

Next, the operation of the manual closing device 20 of the above-described embodiment will be described. In a normal state, as shown in FIG. 4, the lever 35 is accommodated in the operation case 21, that is, since the latch claw 39 is engaged with the roller 33, the slider 29 is moved to the lower end of the guide slot 30. , The lever 35 is in a vertical state via the link rod 36, the lever 35 does not project from the surface of the operation case 21, and the wire 18 is pulled by the slider 29.
The urging force of the urging member is resisted, that is, the control piece 16 is not in contact with the control rod 12.

In this normal state, the braking device 11
Is not working, the opening / closing device 7 and the winding shaft 8 side are in an interlocking connection state, and the driving of the opening / closing device 7 drives the winding shaft 8 to rotate, thereby winding up and rewinding the shutter curtain 3. That is, it is possible to go up (open) and go down (close). Note that, in this normal time, the shutter curtain 3 is wound up and is stored in the storage portion 4 above the opening 2 and the like.

When the shutter curtain 3 is lowered to close the building opening 2 and the indoor partition in an emergency such as fire or power failure, first, the window 27 of the operation case 21 is pushed. At the same time as breaking, the pressing portion 46 of the push button 45 located inside is pressed.

When the push button 45 is pressed, the push button 45 swings, and the contact piece 48 is moved inward, whereby the latch claw 39 is swung via the pressing plate 42 of the latch claw 39. Let

When the latch claw 39 swings, the claw portion 41 and the roller 33 are disengaged, and the holding of the slider 29 is released. Then, as shown in FIG. 6, the slider 29 slides upward along the guide elongated hole 30 by the urging force of the urging member via the wire 18.

As the slider 29 rises, the lever 35 swings through the link rod 36 centering on the shaft supporting portion at the upper end, so that the lever 35 projects from the operation case 21, as shown in FIG.

Further, as the slider 29 rises, the pulling of the wire 18 is released, and the brake releasing means 14 operates the control piece 16 by the urging force of the urging member to tilt the control rod 12, The interlocking connection state between the switch 7 of the braking device 11 and the winding shaft 8 side is disconnected, and the braking state is released. As a result, the take-up shaft 8 is released from the stopped state by the opening / closing device 7, and is in a freely rotatable state, that is, the shutter curtain 3 starts to descend due to its own weight, and the building opening 2 or the indoor section. Close the part.

Next, in order to restore the release of the above-mentioned braking state, that is, to return from the separated state of the opening / closing machine 7 and the winding shaft 8 side to the interlocking connected state, first, project from the operation case 21. The lower end of the lever 35
The lever 35 is swung so as to be in a vertical state.

By the swing of the lever 35, the slider 29 slides downward along the guide elongated hole 30 via the link rod 36. At this time, the operation is against the urging means of the brake release device 14, and the control piece 1 is connected via the wire 18.
2 will be towed.

When the lever 35 is pressed to a substantially vertical state, the roller 33 at the lower end of the slider 29 rides over the slant portion 41a of the latch claw 39 and is engaged with the latch claw 39.

The slider 29 includes the roller 33 and the latch claw 3.
When the control piece 16 is held at the lower end of the elongated guide hole 30 by being engaged with 9, the control piece 16 is held in the pulled state via the wire 18 (see FIG. 4).

The control piece 16 in which the control rod 12 is tilted
Withdraws from the control rod 12, and the control rod 12 returns to the upright state. As a result, the braking device 11 includes the switch 7 and the take-up shaft 8.
The side is brought into an interlocking connection state, and the winding shaft 8 can be rotationally driven by the opening / closing machine 7.

Then, by opening the door 24 with the lock and operating the switch 25 in the operation case 21, the opening / closing device 7 is driven and the shutter curtain 3 is lifted to open the building opening 2 or the indoor compartment. The opening is done.

Therefore, according to the present embodiment, in the event of an emergency such as a fire, the shutter curtains 3 arranged in the building openings and indoor compartments can be closed.
By breaking the window 27 of the lock door 24 and pressing the push button 45 located inside thereof, the latch claw 39 is disengaged from the roller 33, so that the brake releasing device 14 operates and the opening / closing device 7 is operated. This is performed after the interlocking connection state between the winding shaft 8 side and the winding shaft 8 side is released.

The roller 33 provided on the slider 29 is
When the engagement state with the latch claw 39 is released, the latch claw 39 rolls and the mutual engagement state is released, so that the operation for releasing the engagement is the conventional sliding operation. It can be performed with a lighter operating force than that of the structure described above, that is, the pressing operation by the push button 45 becomes easy. Similarly, when the roller 33 and the latch claw 39 are engaged with each other,
Since the rollers 33 roll, the operating force when they engage with each other is reduced, that is, the return operation by the lever 35 becomes easy.

Second Embodiment Next, a second embodiment will be described. 8 is a perspective view showing a second embodiment of the manual release mechanism of the present invention, FIG. 9 is a front view of the same, FIG. 10 is a sectional view taken along line XX in FIG.
11 is an exploded perspective view showing the main part of the manual release mechanism, FIG.
2 is an exploded perspective view of the push button of the manual release mechanism, FIG.
FIG. 10 is a sectional view taken along line YY in FIG. 9. In addition, this second
In the embodiment, parts that are the same as or equivalent to those in the above-described first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

The manual closing device 50 as the manual releasing mechanism of the second embodiment has a slider, an adjusting piece, an adjusting means, a lever, a roller constituting an engaging mechanism portion, a latch claw, and a releasing mechanism. It is roughly composed of a push button that constitutes the mechanical section. In addition, in this 2nd Embodiment, the wire 18 as a flexible long body connected with the control piece 16 of the brake release device 14 is connected with an adjustment piece. Further, the lockable door 2 provided on the operation case 21 and covering the front surface side of the operation portion 23.
As shown in FIG. 8, a closing piece 24 a is extended to cover the lower end portion of the mechanism portion 22.

The slider 51 is arranged in the mechanism portion 22 in the operation case 21. The slider 51 is formed in a substantially U-shape by connecting a pair of flat plate-like side plates 52 formed in a substantially L-shape at one substantially vertical side edge on the lower front side through a support plate portion 53. It has a structure. This support plate portion 53
A mounting hole 54 is formed substantially at the center of the, and an adjusting means 67 described later is mounted therein. Support holes 55 are formed in the upper portions of the side plates 52 of the slider 51, respectively. The rear end edge of the slider 51 is formed such that the upper end corner and the lower end corner are curved.

Next, the adjusting piece 57 is made of a plate-like member whose middle part is bent in a substantially V shape. This adjusting piece 57 is also composed of a pair of side plates 58, similar to the slider 51, and has a structure in which one side of the lower half portion is connected by a contact plate portion 59 in the middle and is formed in a substantially U shape. A rolling roller 61 is also provided.

The adjusting piece 57 has a through hole 62 penetrating the side plate 58 in the middle thereof. Further, the connecting shaft 63 extends through each side plate 58 at the end of the upper half portion that extends upward from the through hole 62 in the middle of the adjusting piece 57.
Is fixed. An end of the wire 18 connected to the control piece 12 of the brake releasing device 14 is connected to the connecting shaft 63.

The adjusting piece 57 is provided on the slider 51.
Is inserted between both side plates 52, and a halfway through hole 62 is aligned with a support hole 55 formed at the upper end of the slider 51 to attach a support shaft 65, that is, a support shaft 65 for this slider 51. It is swingable at 65.

A rolling roller 61 is attached to a support shaft 65 which penetrates the slider 51 and the adjusting piece 57. As shown in FIG. 10, the rolling roller 61 is attached to the slider 51 together with the adjusting piece 57, and the peripheral edge portion thereof protrudes from the rear end edge of the slider 51. The contact plate portion 59 faces the back surface of the support plate portion 53 of the slider 51 with the adjustment piece 57 attached to the slider 51.

Then, together with the adjusting piece 57, the slider 51 is provided in the operation case 21 so that the rear plate 2 of the mechanism portion 22 is provided.
It is slidable up and down along 2b, and the rolling roller 61 comes into contact with the back plate 22b at the time of sliding and rolls at the time of sliding.

Next, the adjusting means 67 is provided in the mounting hole 54 formed in the support plate portion 53 of the slider 51. The adjusting means 67 is composed of a combination of a bolt 68 and a nut 69 in the present embodiment. The nut 69 is the support plate portion 5.
It is located in the mounting hole 54 of No. 3, is fixed to the surface, and the bolt 68 is screwed to this nut 69. The screwed bolt 68 penetrates the support plate portion 53, and its tip comes into contact with the contact plate portion 59 of the adjustment piece 57.

The bolt 68 can be rotated by using a tool such as a screwdriver, and the screwing state with respect to the nut 69 is changed, that is, when the bolt 68 is screwing state, the slider of the adjusting piece 57 that abuts the tip of the bolt 68. The tilt angle with respect to 51 can be adjusted.

Next, the lever 71 has one side exposed on the surface of the mechanism portion 22 of the operation case 21 as in the case of the above-described first embodiment. On the other hand, the upper end is pivotally supported and the lower end is swingably attached. One side of the lever 71 is substantially flush with the lock door 24 of the operation case 21 in the vertical state.

A link rod 72 is connected to a middle portion of the lever 71 via a shaft 73. One end of the link rod 72 is coaxially connected with the support shaft 65 along with the shaft support portion in the middle of the adjustment piece 57, that is, the slider 51 and the rolling roller 61, and the other end is connected to the middle of the lever 71. It is connected.

The attachment state of the link rod 72 to the lever 71 and the adjusting piece 57 is as shown in FIG.
The position of the other end (shaft 73) with respect to one end is upward. Further, the lever 71 is formed in a slightly short length so that a space is formed at the lower end of the lever 71 in the vertical state when it is accommodated in the operation case 21, and the end surface of the bolt 68 of the adjusting means 67 is formed in the operation case 21. It can be seen from the front (see FIG. 8), and this space is covered by a closing piece 24 a of the lock door 24 when the lock door 24 is closed.

Next, the latch claw 75 is provided at the swing end which is the lower end of the lever 71. This latch claw 75
In the direction of the back surface of the lever 71, which is the back of the operation case 21,
A claw portion 76 is formed so as to extend in a direction orthogonal to the longitudinal direction of the lever 71 and has a hook portion downwardly formed in a hook shape at its tip.

Next, the roller 77 is attached to the support bracket 79 arranged in the operation portion 23 of the operation case 21 by the shaft 81.
It is arranged via. The support bracket 79 is the operation unit 2
3 is provided on the surface of the base plate 26, is formed in a substantially rectangular box shape, and slits 82 that are perpendicular to the left and right side plates are formed respectively. A long shaft 81 is provided in each of the slits 82 on both side plates so as to pass through the slits 82. Both ends of the shaft 81 are supported by the slits 82 and guided so that the shaft 81 can move up and down. And this axis 81
As shown in FIG. 9, one end of
2 extends through the side plate 22a, and a rotatable roller 77 is provided at the end thereof.

This roller 77 is along the slit 82,
It is slidable up and down in the mechanism section 22, and the lever 7
It engages with the latch claw 75 provided at 1.

The state in which the roller 77 and the latch claw 75 are engaged is the state in which the lever 71 is vertical, and the slider 51 is located below the mechanism portion 22 via the link rod 72 connected thereto. . As a result, the wire 18 connected to the adjustment piece 57 is pulled, that is, the control piece 12 is held at one slide position against the biasing force of the biasing member.

Next, the push button 83 is used for the operation case 21.
It is arranged in the lower part of the operation part 23 inside, and is provided so as to penetrate the support bracket 79. The push button 83 of the present embodiment has a substantially rectangular pressing surface 84, and a pair of leg portions 85 extending orthogonally to the pressing surface 84 on both side edges of the pressing surface 84. It has a button portion 86 formed in a shape and is substantially configured by a bracket 87 that supports the button portion 86.

In the half slide portion 85a near the pressing surface 84 of each leg portion 85 of the button portion 86, the plate surface is
Slit-shaped guide slot 88 with an inclination angle of about 45 degrees
Has been drilled. These guide slots 88 are provided for the rollers 7
The shaft 81 of 7 penetrates. In addition, the support portion 85b at the front half of each leg portion 85 is formed to have a slightly narrow width.

The bracket 87 is located on the rear surface of the base plate 26 of the operation case 21 and is fixed at a position behind the support bracket 79.

Then, each leg 8 is inserted into a pair of slit-shaped insertion holes 89 formed in the substantially center of the support bracket 79.
5 penetrates, the base plate 26 penetrates, and the support part 85b which is a tip of each leg part 85 penetrates the bracket 87 on the back surface of the base plate 26, and is attached. A retaining pin 90 is attached to the tip of each leg 85.

A coil spring 91 is wound around each leg portion 85 between the back surface of the base plate 26 and the bracket 87, whereby the push button 83 in the operating portion 23 with respect to the support bracket 79. You can move back and forth.

Further, in each of the slanted guide elongated holes 88 of the push button 83, the shaft 8 penetrating the support bracket 79 is inserted.
1 penetrates, that is, the pressing operation of the push button 83 allows the shaft 81 to move freely along the guide elongated hole 88 and the slit 82, and when pressing, the shaft 81 descends from the upper end of the slit 82. Becomes

From this, the roller 77 is moved downward by the pressing operation of the push button 83, and the lever 7 is moved.
From the state of being engaged with the first latch claw 75, the operation of releasing the engaged state can be performed.

Next, the operation of the manual closing device 50 according to the above-described second embodiment will be described. First, in a normal state, the lever 71 is accommodated in the operation case 21,
That is, the latch claw 75 of the lever 71 is engaged with the roller 77, and the housed state of the lever 71 is held,
The slider 51 is located at the lower end of the operation case 21 via the link rod 72, and is connected to the slider 51.
By this, the wire 18 is pulled and brought into a state against the biasing force of the biasing member, that is, the control piece 16 does not tilt the control rod 12 (see FIG. 1).

In this normal state, the braking device 11
Is not working, the opening / closing device 7 and the winding shaft 8 side are in an interlocking connection state, and the driving of the opening / closing device 7 drives the winding shaft 8 to rotate, thereby winding up and rewinding the shutter curtain 3. That is, it is possible to go up (open) and go down (close). Note that, in this normal time, the shutter curtain 3 is wound up and is stored in the storage portion 4 above the opening 2 and the like.

When the shutter curtain 3 is lowered and the building opening 2 and the indoor partition are closed in an emergency such as a fire or a power failure, first, the window 27 of the operation case 21 is pushed. While breaking, the pressing surface 84 of the push button 83 located inside is pressed.

When the push button 83 is pressed, the push button 83 moves backward, which causes the shaft 81 to move downward and the roller 77 to descend (see FIG. 13).

When the roller 77 descends, the engagement between the claw portion 76 of the latch claw 75 and the roller 77 is released, and the lever 7 is released.
The holding state of 1 will be released. Then wire 1
The slider 51 slides upward in the operation case 21 by the urging force of the urging member via 8. The movement of the slider 51 causes the rolling roller 61 to roll along the back plate 22b, and smoothly move up.

As the slider 51 ascends, the lever 71 swings through the link rod 72 around the pivotal support portion at the upper end, so that the lever 71 projects from the operation case 21, as shown in FIG.

Further, as the slider 51 rises, the pulling of the wire 18 is released, and the brake releasing device 14 operates the control piece 16 by the urging force of the urging member to tilt the control rod 12, The interlocking connection state between the switch 7 of the braking device 11 and the winding shaft 8 side is disconnected, and the braking state is released. As a result, the take-up shaft 8 is released from the stopped state by the opening / closing device 7, and is in a freely rotatable state, that is, the shutter curtain 3 starts to descend due to its own weight, and the building opening 2 or the indoor section. Close the part.

Next, in order to restore the release of the above-mentioned braking state, that is, to return from the separated state of the opening / closing machine 7 and the winding shaft 8 side to the linked connection state, first, project from the operation case 21. Press the lower end side of the lever 71,
The lever 71 is swung so as to be in a vertical state.

By the swing of the lever 71, the slider 51 slides downward in the operation case 21 via the link rod 72. At this time, the operation is against the biasing means of the brake release device 14, and the control piece 16 is pulled through the wire 18.

When the lever 71 is pressed to a substantially vertical position, the claw portion 76 of the latch claw 75 at the lower end of the lever 71 rides over the roller 77, and the latch claw 75 and the roller 77 engage with each other.

The position of the slider 51 is maintained at the lower end inside the operation case 21 by the engagement of the latch claw 75 and the roller 77, and the control piece 16 is maintained in the pulled state via the wire 18. To be done.

The control piece 16 that tilts the control rod 12
Withdraws from the control rod 12, and the control rod 12 returns to the upright state. As a result, the braking device 11 includes the switch 7 and the take-up shaft 8.
The side is brought into an interlocking connection state, and the winding shaft 8 can be rotationally driven by the opening / closing machine 7.

Then, the door 24 with lock is opened and the switch 25 in the operation case 21 is operated to drive the opening / closing device 7 to raise the shutter curtain 3 and to open the building opening 2 or the indoor section. The opening is done.

Next, the procedure for adjusting the wire 18 by the manual closing device 50 according to the second embodiment will be described.
The adjustment of the wire 18 is an adjustment for maintaining the state in which the brake release device 14 does not work normally, and the pulling state of the control piece 16 by the manual closing device 50 changes with time, that is, the extension of the wire 18. When a problem occurs, the tension is adjusted.

When performing this adjustment, the lever 71
Is performed in a vertical state, that is, in a state in which the brake release device 14 is inoperative and the control piece 16 is pulled by the slider 51 against the urging force of the urging member.

First, the lock door 24 is opened. Door with lock 24
When the switch is opened, the switches 24 and the like of the operation unit 23 are exposed, and the space below the lever 71 is opened.
As shown in, the end surface of the bolt 68 of the adjusting means 67 is exposed.

Next, using a tool such as a screwdriver, the bolt 68 is rotated and screwed, that is, the screwing length of the bolt 68 into the nut 69 is adjusted.

When the bolt 68 is rotated and further screwed into the nut 69, the contact plate portion 59 of the adjusting piece 57, which is in contact with the tip of the bolt 68, is pressed. Then, the adjustment piece 57 swings around the support shaft 65, and thus the wire 18 is pulled.

The tension of the wire 18 is adjusted while checking the position of the control piece 16 of the brake releasing device 14 and the like. Then, when the adjustment is completed, the lock door 24 is closed.

Therefore, according to the present embodiment, in the event of an emergency such as a fire, the shutter curtains 3 arranged in the building openings and indoor compartments can be closed.
By breaking the window 27 of the door 24 with lock and pressing the push button 83 located inside thereof, the engagement between the roller 77 and the latch claw 75 is released, whereby the brake releasing device 14 operates and the opening / closing device 7 This is performed by releasing the interlocking connection state between the winding shaft 8 and the winding shaft 8.

Roller 7 interlocked with pressing of push button 83
When the engagement state with the latch claws 75 is released, the rolling elements 7 roll with respect to the latch claws 75 and the mutual engagement states are released, so that the operation for releasing the engagement is performed by the conventional method. It can be performed with a lighter operating force than that of a structure that is a sliding operation, that is, the pressing operation by the push button 83 becomes easy. Similarly, when the roller 77 and the latch claw 75 are engaged with each other, the roller 77 rolls, so that the operation force at the time of engagement with each other is reduced, that is,
The returning operation by the lever 71 becomes easy.

Also, the adjusting piece 57 connected to the wire 18
Since the slider 51 is swingably provided and the adjusting means 67 including the bolt 68 and the nut 69 is provided, the tension of the wire 18 can be adjusted, and the wire 18 extends due to a change with time or the like. In that case, maintenance can be easily performed, that is, the tension of the wire 18 can be easily improved, and malfunction of the braking device 11 side can be eliminated.

In each of the above-described embodiments, in the first embodiment, the engagement between the roller 33 and the latch claw 39 is the connecting portion between the slider 29 and the link rod 36, and the second embodiment is the second embodiment.
In the above embodiment, the roller 77 and the latch claw 75 are engaged between the push button 83 and the lever 71, but these embodiments may be combined to form the configuration shown in FIG. .

That is, as shown in FIG. 15, the manual closing device 100 as the manual releasing mechanism of this embodiment is as follows.
As in the above-described second embodiment, the adjustment piece 57 connected to the wire 18 is swingably provided on the slider 51, and the roller 33 is arranged at the axially supporting portion between the slider 51 and the adjustment piece 57. . The latch claw 39 that engages with the roller 33 has the same configuration as that of the first embodiment described above, and is disposed inside the operation case 21. Lever 35
Also, the link rod 36 has the same configuration as that of the first embodiment described above, and the push button (not shown) has the same configuration as that of the first embodiment.

According to this structure, the latch claw 39 is swung by the operation of the push button in an emergency, and the roller 3 is moved.
By releasing the engagement with 3, the pulling state of the wire 18 by the slider 51 together with the adjusting piece 57 is released, and the control piece 16 of the brake releasing device 14 is operated. Thereby, the control rod 12 is tilted to disconnect the interlocking connection state between the opening / closing device 7 of the braking device 11 and the winding shaft 8 side, and the closing operation of the shutter curtain 3 by its own weight is performed.

Therefore, according to this example,
Similar to the second embodiment, when the roller 33 provided on the slider 51 is released from the engagement state with the latch claw 39, the roller 33 rolls with respect to the latch claw 39 and engages with each other. Since the operation is released, the operation for releasing the engagement can be performed with a lighter operating force than that of the conventional sliding operation, that is, the pressing operation by the push button becomes easy. Similarly, when the roller 33 and the latch claw 39 are engaged with each other, the roller 33 rolls,
The operation force at the time of mutual engagement is reduced, that is, the return operation by the lever 35 becomes easy.

Further, by providing the slider 51 with the adjusting means 67 having the same structure as that of the second embodiment, the tension of the wire 18 can be easily adjusted.

16 to 18 are combined with the structure of the latch claw and the push button of the first embodiment described above and the engagement structure of the roller and the latch claw in the lever portion of the second embodiment. The configuration may be as shown in.

That is, as shown in FIG. 16, the manual closing device 120 as the manual releasing mechanism of this embodiment is as follows.
As in the above-described first embodiment, the push button 45 that is swingable is disposed on the base plate 26, and the contact piece 48 extending to the back surface of the base plate 26 is the pressing plate of the latch claw 121. 122 is opposed to and abuts. The latch claw 121 has a base end swingably provided by a support shaft 123 attached to the operation case 21. Further, the latch claw 121 has a tip end side which is a swing tip and extends in a substantially horizontal direction, and has a hook-shaped claw portion 124 which faces downward at the tip. Latch claw 121
A biasing means 125 such as a coil spring is attached to the coil, and the biasing force acts so that the swinging tip is in the downward direction.

The lever 126 has one side exposed on the surface of the mechanism portion of the operation case 21, and the upper end is pivotally supported and the lower end is swingable with respect to the mechanism portion of the operation case 21. In the middle of the lever 126, as in the first embodiment,
The ends of the link rod 127 are connected. Also, link rod 1
27 is a wire 18 connected to the brake release device 14.
Is connected to the slider 128. A roller 129 is disposed near the lower end, which is the swinging end of the lever 126, and as shown in FIG.
It is adapted to be engaged with the first claw portion 124.

According to this structure, the operation of the push button 45 in an emergency causes the latch claw 121 to swing, and the engagement with the roller 129 is released, whereby the link rod 12 is released.
The pulling state of the wire 18 by the slider 128 via 7 is released, and the control piece 16 of the brake releasing device 14 is operated. Thereby, the control rod 12 is tilted, and the braking device 1
The interlocking connection state of the switch 7 of No. 1 and the winding shaft 8 side is disconnected, and the closing operation by the weight of the shutter curtain 3 is performed.

Therefore, according to this example, when the roller 129 provided on the lever 126 is released from the engagement state with the latch claw 121, the roller 129 rolls with respect to the latch claw 121 to be in the engagement state with each other. Since it is released, the operation of releasing the engagement can be performed with a lighter operating force than that of the structure which is a conventional sliding operation, that is, the pressing operation by the push button 45 becomes easy. Similarly, when the roller 129 and the latch claw 121 are engaged with each other, the roller 129 rolls, so that the operation force when the rollers 129 engage with each other is reduced, that is, the lever 126. This makes it easy to perform the return operation.

Further, since the roller 126 is provided on the lever 126 and the latch claw 121 is engaged with the roller 129, the lever 126 can be operated regardless of the play and play due to the connection structure with the slider 128 and the link rod 127. It becomes possible to engage and regulate the swinging, whereby when the swinging of the lever 126 is regulated, the holding state is maintained without the lever 126 wobbling, and the lever 126 projects from the surface of the operation case 21. The defects of are reduced. That is, there is no need for complicated operations such as precision processing and manufacturing of the slider 128 and the link rod 127.

The slider 128 may be provided with the adjusting means 67 having the same structure as that of the second embodiment, so that the tension of the wire 18 can be easily adjusted.

In each of the above-described embodiments, an example in which the manual release mechanism of the present invention is used as a shutter device and configured as a manual closing device for closing a shutter curtain that is an opening / closing body has been described. The manual release mechanism may be used in a device or a mechanism other than the shutter device.

[0126]

As described above, in the manual release mechanism according to the present invention, the structure of the engaging mechanism portion is the roller and the pawl portion. However, the rollers are rolled to release the mutual engagement state, and the operation can be performed with a light operation force. Also, when restricting the swing of the lever,
Since the claws are engaged by rolling the rollers, the operating force for engaging the rollers is reduced.

Further, since the roller or the claw portion of the engaging mechanism portion is provided on the lever, the lever is engaged in the holding state and rocks regardless of the play or play due to the connection configuration with the slider or the link rod. It becomes possible to regulate the movement.

Further, the slider is provided with an adjusting piece for receiving an urging force from the outside, and an adjusting means for oscillating the adjusting piece is provided to adjust the receiving condition of the urging force. Therefore, even if there is a change with time, maintenance can be easily performed, that is, the degree of receiving the biasing force can be easily improved.

When the manual release mechanism of the present invention is used, for example, in a shutter device, in the event of an emergency such as a fire, a shutter curtain such as a building curtain or an indoor partition is installed. To close the opening and closing body,
By pressing the push button, the engagement of the latch claw with the roller is released, and the interlocking connection state between the opening / closing machine and the winding shaft side is released. When the engagement state with the latch claw is released, the roller provided on the slider rolls with respect to the latch claw to release the engagement state from each other. However, it can be performed with a lighter operating force than the conventional sliding operation, that is, the pressing operation by the push button becomes easy. Also, when the roller and the latch claw are engaged with each other, the operation is performed by the rolling of the roller, so that the operation force at the time of engagement with each other is reduced, that is, with the lever-operated switch. This makes it easy to restore the linked connection state with the winding shaft side.

Also, the tension of the wire can be adjusted by arranging the adjustment piece connected to the wire on the slider so that the adjustment piece can be oscillated. Even if the wire stretches due to changes over time, maintenance can be easily performed, that is, the tension of the wire can be easily improved, and the risk of malfunction of the braking device side is eliminated. .

Further, by providing the lever with a roller and engaging the latch claw with the roller, the lever is engaged and rocked regardless of play or play due to the connection structure with the slider or the link rod. It becomes possible to regulate, and thereby, when the swinging of the lever is regulated, the lever does not sway and the holding state is maintained, that is, the problem such as the lever protruding is eliminated.

[Brief description of drawings]

FIG. 1 is a schematic view showing a shutter provided with a manual release mechanism according to a first embodiment of the present invention.

FIG. 2 is a side sectional view of the manual release mechanism.

FIG. 3 is an exploded perspective view showing a main part of the manual release mechanism.

FIG. 4 is a side sectional view of the manual release mechanism.

FIG. 5 is a rear view of the manual release mechanism.

FIG. 6 is a side view explaining the operation of the manual release mechanism.

FIG. 7 is a side view illustrating the operation of the manual release mechanism.

FIG. 8 is a perspective view showing a second embodiment of the manual release mechanism of the present invention.

FIG. 9 is a front view of the same.

10 is a sectional view taken along line XX in FIG.

FIG. 11 is an exploded perspective view showing a main part of the manual release mechanism.

FIG. 12 is an exploded perspective view of a push button of the manual release mechanism.

13 is a cross-sectional view taken along the line YY in FIG.

FIG. 14 is a side view illustrating the operation of the manual release mechanism.

FIG. 15 is a side sectional view showing a manual release mechanism for an opening / closing body according to another embodiment.

FIG. 16 is an exploded perspective view showing a main part of a manual release mechanism according to another embodiment.

FIG. 17 is a side sectional view of the manual release mechanism.

FIG. 18 is a rear view of the manual release mechanism.

[Explanation of symbols]

3 ... Opening / closing body (shutter curtain) 7 ... Opening / closing machine 11 ... Braking device 16 ... Control piece 18 ... Flexible elongated body (wire) 20, 50, 100, 120 ... Manual release mechanism (manual closing device) 29, 51, 128 ... Slider 31 ... Shaft 33, 77, 129 ... Roller 35, 71, 126 ... Lever 36, 72, 127 ... Link rod 39, 75, 121 ... Latch claw 41, 124 ... Claw part 45, 83 ... Push button 57 ... Adjusting piece 67 ... Adjusting means

Claims (11)

[Claims] 1. A lever, one end of which is pivotally supported and is swingable, and which is always biased in one swing direction by a biasing force from the outside, and a roller and a claw portion which are detachable from each other. An engaging mechanism portion that is configured to include one of the roller and the claw portion on the lever, and that restricts the swing of the lever in an engaged state with each other; A releasing mechanism for moving the engaged claw portion or the roller to the engaged roller or the claw portion to release the engaged state from each other. 2. A slider which is always urged in one sliding direction by an urging force from the outside, one end of which is pivotally supported so as to be swingable, and which is connected to the slider through a link rod, The lever is always urged in one swinging direction by the urging force, and the roller and the claw are detachable from each other. The engaging mechanism part that regulates the swinging of the lever in the engaged state, and the claw part or the roller engaged with the roller or the claw part provided on the lever with respect to the engaging mechanism part to move the engaging mechanism part to each other. A manual release mechanism comprising: a release mechanism section for releasing the combined state. 3. A slider which is always urged in one sliding direction by an urging force from the outside, one end of which is pivotally supported so as to be swingable, and which is connected to the slider through a link rod, It is composed of a lever that is always urged in one swing direction by an urging force, a roller and a claw that can be engaged and disengaged with each other. An engaging mechanism portion that regulates the sliding of the slider and regulates the swing of the lever in a combined state, and a claw engaged with a roller or a claw portion provided on the slider with respect to the engaging mechanism portion. A manual release mechanism, comprising: a release mechanism section that moves the section or the roller to release the engaged state with each other. 4. A slidable slider that is constantly biased in one sliding direction by an external biasing force, a roller rotatably mounted on a shaft fixed to the slider, and the roller. A link rod having one end connected to a shaft of the shaft, the other end of which is pivotally connected to a middle portion above the position of the shaft, and has an upper end pivotally supported. A swingable latch claw for holding the slider in a lower position against the biasing force, and a swingable latch claw having a claw portion engaging with the roller at a swinging tip. A manual release mechanism comprising: a push button for releasing the engagement state with the roller. 5. A slider which is slidably provided, and which is pivotally supported by the slider and is swingable,
An adjusting piece which is constantly provided with an urging force in one of the swinging directions by an urging force from the outside through an end extending to the shaft supporting portion; and an adjusting piece provided on the slider for swinging the adjusting piece. An adjusting means for adjusting the inclination angle with respect to the slider and a link rod having one end connected to the shaft supporting portion of the adjusting piece are provided, and the other end of the link rod has a shaft in a middle portion above the position of the shaft supporting portion. A swingable lever that is attached and connected, and has an upper end pivotally supported; and a roller that is disposed close to the swing end side of the lever and that is slidably movable along the longitudinal direction of the lever. It is provided at the swing end of the lever and engages with the roller,
A latch claw that restricts the swing of the lever against the biasing force; and a push button that slides the roller to release the engagement state with the latch claw. Manual release mechanism. 6. A slider which is slidably provided, and which is pivotally supported by the slider and is swingable,
An adjusting piece which is always provided with an urging force in one of the swing directions by an urging force from the outside through an end extending to the shaft supporting portion; An adjusting means for adjusting the inclination angle with respect to the slider and a link rod having one end connected to the shaft supporting portion of the adjusting piece are provided. A swingable lever that is attached and connected, and whose upper end is pivotally supported, a roller that is rotatably mounted around the pivotal support portion of the adjustment piece, and a claw portion that engages with the roller. A swingable latch claw, which is provided at the tip and holds the slider together with the roller at a lower position and holds the slider against the biasing force, and an engaged state with the roller by swinging the latch claw. A push button to be released, and a hand characterized by comprising: Release mechanism. 7. A link rod provided with a slidable slider which is always urged in one sliding direction by an urging force from the outside, and a link rod whose one end is connected to the slider via a support shaft. A swingable lever, the other end of which is pivotally connected to an intermediate portion above the shaft position and has an upper end pivotally supported, and a roller rotatably provided at the swing end of the lever. A swingable latch claw for holding the lever together with the roller against the biasing force via the link rod and slider, the claw portion engaging with the roller being provided at a swinging end. A push button that swings the latch claw to release the engagement state with the roller, and a manual release mechanism. 8. A braking device for interlocking connection and disconnection between an opening / closing body and an opening / closing device, wherein the opening / closing body and the opening / closing device are interlockingly connected when moved to one side, and the above-mentioned when moved to the other side. A control piece having a biasing means that separates the opening / closing body and the opening / closing device, and biases the opening / closing body and the opening / closing machine in the other moving position direction in which the opening / closing body and the opening / closing device are separated, and a position separated from the control piece. And is connected to the control piece through a flexible elongated body, and is rotatable about a slider slidable in the urging direction of the urging means of the control piece and a shaft fixed to the slider. A roller that is freely mounted and a link rod whose one end is coupled to the shaft of the roller are provided. The other end of the link rod is pivotally attached to and connected to an intermediate portion above the position of the shaft, and the upper end is A swingable lever that is pivotally supported, and a claw portion that engages with the roller At the swinging tip, holds the slider at the lower position together with the roller, and moves the control piece to the one moving position against the urging force of the urging means via the flexible elongated body. And a push button for swinging the latch claw to release the engagement state with the roller. 9. A braking device for interlocking connection and disconnection between an opening / closing body and an opening / closing device, wherein the opening / closing body and the opening / closing device are interlockingly connected when moved to one side, and the above-mentioned when moved to the other side. A control piece having an urging means for urging the opening / closing body and the opening / closing device, and urging the opening / closing body and the opening / closing device in the other moving position direction in which the opening / closing body and the opening / closing device are separated, and a position separated from the control piece. And a slider slidably provided in a biasing direction by the biasing means of the control piece, and pivotally supported by the slider and swingably provided.
An adjusting piece connected to the control piece via a flexible elongated body at an end portion extending with respect to the shaft supporting portion; and an inclination angle with respect to the slider, which is provided on the slider and swings the adjusting piece. And a link rod whose one end is connected to the shaft supporting portion of the adjusting piece, and the other end of the link rod is pivotally attached to a middle portion above the position of the shaft supporting portion and connected. And a swingable lever whose upper end is pivotally supported; a roller disposed near the swing end side of the lever and slidably movable in the longitudinal direction of the lever; It is provided at the moving end and engages with the roller,
A latch claw that restricts swinging of the lever against the biasing force of the biasing means; and a push button that slides the roller to release the engagement state with the latch claw. Features a manual release mechanism. 10. A braking device for interlocking connection and disconnection between an opening / closing body and an opening / closing device, wherein the opening / closing body and the opening / closing device are interlockingly connected when moved to one side, and the above-mentioned when moved to the other side. A control piece having an urging means for urging the opening / closing body and the opening / closing device, and urging the opening / closing body and the opening / closing device in the other moving position direction in which the opening / closing body and the opening / closing device are separated, and a position separated from the control piece. And a slider slidably provided in a biasing direction by the biasing means of the control piece, and pivotally supported by the slider and swingably provided.
An adjusting piece connected to the control piece via a flexible elongated body at an end portion extending with respect to the shaft supporting portion; and an inclination angle with respect to the slider, which is provided on the slider and swings the adjusting piece. And a link rod whose one end is connected to the shaft supporting portion of the adjusting piece, and the other end of the link rod is pivotally attached to a middle portion above the position of the shaft supporting portion and connected. And has a swingable lever whose upper end is rotatably supported, a roller rotatably mounted around the rotatably supporting portion of the adjusting piece, and a claw portion which engages with the roller at the swinging tip. Swingable, holding the slider together with the roller at a lower position and holding the control piece at the one moving position against the urging force of the urging means via the flexible elongated body. Latch claw and swing the latch claw to release the engagement with the roller Manual release mechanism, characterized in that it comprises a button press, a. 11. A braking device for interlocking connection and disconnection between an opening / closing body and an opening / closing device, wherein the opening / closing body and the opening / closing device are interlockingly connected when moved to one side, and the above-mentioned when moved to the other side. A control piece having a biasing means that separates the opening / closing body and the opening / closing device, and biases the opening / closing body and the opening / closing machine in the other moving position direction in which the opening / closing body and the opening / closing device are separated, and a position separated from the control piece. And a slider that is connected to the control piece through a flexible elongated body and is slidable in the urging direction by the urging means of the control piece, and one end of the slider via a support shaft. A swingable lever having a link rod to be connected, the other end of which is pivotally attached and connected at a middle portion above the position of the shaft and the upper end of which is pivotally supported; A roller rotatably provided at the moving end and engaging with the roller. The control piece is provided with a claw portion at the swinging tip, holds the lever together with the roller, and resists the urging force of the urging means through the link rod, the slider and the flexible elongated body. A manual release mechanism comprising: a swingable latch claw that is held at one of the moving positions; and a push button that swings the latch claw to release the engagement state with the roller.