JPS5921439B2 - Opening/closing device for shutters - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an opening/closing device for a shutter, and in particular, it is normally capable of winding up and unwinding a shutter using a motor, and in the event of an emergency such as a fire, a fire extinguisher is supplied from a fire hose. This invention relates to an opening/closing device for a shutter that can be rolled up using pressurized water.

An object of this invention is to provide a clutch mechanism between the water turbine and a rotating shaft operatively connected to one end of the motor, so that when the shutter is opened/closed by the motor, the water turbine is held in a stopped state, and a fire hose is connected to the water turbine. When the water turbine is rotated by the supplied pressurized water, the water turbine is rolled up through the rotating shaft and the motor shaft by the coupling action of the clutch mechanism, and in the event of a fire, the shutter can be opened reliably and quickly. By providing a pressure receiving device in the middle of the water supply pipe of the water turbine to connect and operate the latch mechanism, pressurized water is supplied from the fire hose into the water supply pipe, and at the same time, the pressure receiving device causes the clutch mechanism to connect to the water turbine. To provide an opening/closing device for a shutter that is operated in the direction of connecting it to a motor shaft and can automatically open the shutter simply by supplying pressure water from a fire hose into a water supply pipe.

A further object of the present invention is to provide a structure in which the motor cannot be started when the shutter is being wound up as the water wheel rotates, thereby causing the motor to accidentally wind up the shutter when the water wheel is winding up the shutter. To provide an opening/closing device for a shutter that can reliably prevent the danger of being activated in the return direction and can safely open the shutter without any hindrance in an emergency such as a fire.

Hereinafter, the configuration of a shutter opening/closing device embodying the present invention will be explained with reference to the drawings. In particular, as shown in FIGS. 1 and 2, the shutter is installed indoors near the location. The shutter winding shaft 24, which is installed on the inner surface of the upper part of the wall 21, is rotated via a chain 22 and a sprocket 23, and a slatton yatch 25 consisting of a large number of slats 25a is mounted on a pair of guide rails 26 to be rolled up or It is possible to rewind.

Roughly speaking, the shutter opening/closing device includes a motor 2γ capable of forward and reverse rotation, an output shaft 28 disposed on one side of the motor, and a water wheel 29 disposed on the other side of the motor 27.
, a clutch mechanism 30 provided between the motor 27 and the water wheel 29, and a speed regulating mechanism 31 provided on the side of the water wheel 29.
and a brake mechanism 32 disposed on the side of the speed regulating mechanism.
Brake release mechanism 33 arranged on the side of the brake mechanism
And the opening/closing operation of the shutter located above and outside of the motor 27! IJSJ1 mechanism 34.

Therefore, first, the configuration of the motor 27 and output shaft 28 parts is as follows.
Particularly in detail with reference to FIG. 3, the motor 27
A speed reduction mechanism 40 and a frame 41 are attached to the side of the frame 41, and as shown in FIGS. Mounting flange 41 for mounting on the upper inner surface
a is integrally formed.

The output shaft 28 has a pair of bearings 4 at both ends so that it is disposed on the same axis as the motor shaft 27a of the motor 27.
A sprocket 44 for opening and closing the shutter for hanging the chain 22, and a sprocket 45 for operating the shutter opening/closing movement limiting mechanism 34 are rotatably supported in the frame 41 by a sprocket 44 at approximately the center thereof.
is fixed.

The speed reduction mechanism 40 is composed of two planetary gear sets 46, 47, each planetary gear set having one sun gear 46a, 47.
7a, three planetary gears 46b, 47b, and one internal gear 46c, 47c, respectively, so that the rotation of the motor shaft 27a is transmitted to the output shaft 28 at a reduced speed.

Therefore, this shutter opening/closing device is stably attached to the upper inner surface of the wall 21 with bolts or the like at the flange 41a of the frame 41. supported in a stable state.

When the motor 27 is started in the clockwise direction in FIG. 2, the shutter take-up shaft 24 is rotated in the same direction via the deceleration mechanism 40, output shaft 28, sprocket 44, chain 22, and sprocket 23. When the slat shutter 25 is wound up and the motor 27 is started in the counterclockwise direction, the slat shutter 25 is rewound from the shutter take-up shaft 24.

Next, the structure of the water turbine 29 and the clutch mechanism 30 will be explained in detail, especially with reference to FIGS. A clutch mechanism 30, a reduction mechanism 51, and a water wheel 29 are attached to the side of the motor 27 so as to be arranged on the outer periphery of the rotating shaft.

As is clear from FIGS. 4 and 5, inside the casing 52 of the water turbine 29, an outer pressure chamber 54 communicating with an inlet 53 and an inner impeller chamber 56 communicating with an alaret 55 are arranged on a partition wall. A partition is formed by 57, and the partition wall 5
A pair of ejection ports 58 for ejecting pressurized water from the pressure chamber 54 toward the impeller chamber 56 is formed at 7 .

The impeller 6 is mounted on the side wall of the casing 52 by a bearing 59 so as to be loosely fitted onto the rotating shaft 50 within the impeller chamber 56.
0 is rotatably supported and is rotated counterclockwise in FIG. 5 by pressure water jetted from the spout 58.

The reduction mechanism 51 disposed on the side of the water wheel 29 is constituted by a planetary gear device 61 consisting of one sun gear 61a, three planetary gears 61b, and one internal gear 61c. The output shaft 62 is supported by a bearing portion of a casing 63 of the reduction mechanism via a one-way rotation clutch 64,
The cylindrical output shaft 62 is allowed to rotate only when the impeller 60 is rotated counterclockwise in FIG. 5 by pressure water.

A driving claw 65 of the clutch mechanism 30 is formed at the tip of the cylindrical output shaft 62, and a sliding member 66 can only be moved in the axial direction on the outer periphery of the rotating shaft 50 by a key so as to correspond to the driving claw 65. A driving pawl 67 that can be engaged with and disengaged from the driving pawl 65 is formed on the end surface of the sliding member 66 .

An operating lever 69 is movably supported by the casing 63 by a support shaft 68 so as to penetrate through the casing 63 and be disposed close to the outer periphery of the sliding member 66, and the operating lever 69 rotates counterclockwise in FIG. When the sliding member 66 is rotated in the direction shown in FIG.
The cylindrical output shaft 62 and the rotating shaft 50 are connected to each other by engaging with the cylindrical output shaft 62 and the rotating shaft 50.

Therefore, when the impeller 60 of the water turbine 29 is rotated by the pressure water in the connected state of the clutch mechanism 30, the rotation shaft 50 is rotated via the deceleration mechanism 51 and the clutch mechanism 30, and the rotation is transmitted to the motor shaft 27a and the deceleration mechanism. It is transmitted to the output shaft 28 via the mechanism 40, and the slat shutter 25 is wound up on the shutter winding shaft 24 in the same way as when the motor 27 is started in the shutter winding direction.

Further, when the water turbine 29 is stopped with the clutch mechanism 30 in the connected state shown in FIG. Since the directional rotation clutch 64 locks the cylindrical output shaft 62 to the bearing portion of the casing 63, the slat shutter 25 is held open without falling due to its own weight.

Next, the water supply and drainage structure of the water turbine 29 will be explained with reference to FIGS. 1, 2, 5, 6, 7, and 8. The water supply pipe 71 is guided downward along the inner surface of the wall 21, and a fire hose can be connected to the tip end thereof from outside.
The shutter is installed through an opening in the outer surface of the wall 21 near the location.

Further, a pressure valve 72 is provided at the tip opening of the water supply pipe 71 so as to open the opening only when pressure water of a predetermined pressure or higher is supplied. is designed to prevent it from being opened.

On the other hand, a drain pipe 73 connected to the outlet 55 of the water wheel 29 is led along the inner surface of the wall 21 to an arbitrary drainage point, so as to drain the water inside the water wheel 29.

FIG. 8 shows an example of the pressure valve 72, and in this embodiment, a valve seat 74 is provided at the lower end of the water supply pipe 71.
A valve casing 75 with a valve casing 75 is mounted and is open on the outside of the wall 21 at its side.

A valve body 7 is inserted into the pulp casing 75 by a valve stem 76.
7 is movably supported, and normally a spring 78 supports the valve body 7.
7 is pressed against the valve seat γ4 to close the lower end opening of the water supply pipe 71.

A plurality of drainage holes 79 are formed in the valve body 77, and a spherical check valve body 80 is movably supported to drain water remaining in the water supply pipe 71 after the water turbine 29 is stopped.
It is designed to be discharged from

A pressure receiving device 81 is installed on the side of the water supply pipe 71 near the inlet 53 of the water turbine 29, and senses when pressure water is supplied into the water supply pipe 71 from the fire hose and activates the clutch mechanism. 30 to the connected position.

The pressure receiving device 81 in this embodiment is particularly shown in FIGS.
As is clear from FIG. 9 and FIG.
A piston-shaped pressure receiving member 83 is movably provided therein so as to be operated by the pressure water in the water supply pipe 71.

The operating lever 69 of the clutch mechanism 30 is connected to the outer end of the operating rod 84 extending from the pressure receiving member 83 through a joint 85, and a spring is provided in the pressure chamber 82 to prevent vibration of the pressure receiving member 83. 86 is provided.

Therefore, in the event of an emergency such as a fire, a fire hose is connected to the opening of the pressure valve 72, and pressure water for fire extinguishing is supplied from the fire hose to the water turbine 29 through the water supply pipe 71, as shown in FIG. As shown in FIG. 3, the pressure receiving member 83 of the pressure receiving device 81 is moved by the pressure water in the water supply pipe 71, the clutch mechanism 30 is operated to the connecting position via the operating lever 69, and the cylindrical output shaft 62 is rotated. It is operatively connected to shaft 50 .

In this state, the impeller 60 of the water wheel 29 is rotated by the pressure water, so the Slatton Yatsu 2
5 is quickly and reliably wound around the shutter winding shaft 24, thereby facilitating fire extinguishing activities.

On the other hand, when the rotary shaft 50 is rotated by the water wheel 29 in the shutter winding direction, the motor 27 is connected to the actuating lever 69 of the clutch mechanism 30 to prevent the motor 27 from being erroneously started in the shutter winding direction. A safety switch 87 is attached to the bottom of the motor casing, and the 9th
As shown in the figure, when the clutch mechanism 30 is operated to the connected position, the safety switch 87 is operated by the operating lever 69 to open the starting circuit of the motor 27.

Therefore, even if the starting switch (not shown) of the motor 2γ is accidentally operated during the winding operation of the slat shutter 25 by the water wheel 29, there is no risk that the motor 27 will be started, and the slat shutter 25 will be activated in the event of an emergency such as a fire. It can be opened safely without any problems.

Next, the structure of the speed regulating mechanism 31 and the brake mechanism 32 disposed on the side of the water turbine 29 will be explained in particular in FIGS. 4 and 10.
To explain in detail according to FIGS. 11, 12, and 13, on the side of the water turbine 29, a fixed brake body 90 of the speed regulating mechanism 31 and a cylindrical casing of the brake mechanism 32 are arranged so as to surround the rotating shaft 50. 91 is disposed on the same axis as the rotating shaft 50.

In the cylindrical casing 91, a brake body 93 of a brake mechanism 32 which also serves as a rotating member of the speed regulating mechanism 31 is supported on the outer periphery of the rotating shaft 50 via a one-way rotating clutch 92. Only when the shutter is rotated in the rewinding direction indicated by the arrow in the figure, the brake cylinder 93 is rotated in the same direction.

As is clear from Figures 4, 10 and 11,
A pair of support pins 94 are protruded from the side surface of the brake body 93 so as to be arranged substantially symmetrically with respect to the rotating shaft 50.

A pair of centrifugal brake arms 95 are disposed corresponding to the inner circumferential surface of the fixed brake body 90 so as to removably engage with the support pin 94 at arcuate engagement portions 95a formed at both ends. , a fixed brake cylinder 9 is attached to their outer peripheral surfaces.
A plate knee 96 that can be moved toward and away from the inner circumferential surface of the 0 is attached to each of the inner peripheral surfaces of the 0.

Both centrifugal brake arms 95 are adjacent to the support pin 94.
A pair of springs 97 are hung between them to hold the centrifugal brake arm 95 separated from the fixed brake body 90, as shown in FIG.

Therefore, the brake release mechanism 33 causes the brake mechanism 32 to
is released and the slat shutter 25 is rewound by its own weight, the rotating shaft 50 and the brake body 93 are connected by the one-way rotary clutch 92, and the brake body 9
3 is rotated in the shutter rewinding direction shown by the arrow in FIG.

When the rotation is accelerated as the slat shutter 25 naturally falls and reaches a predetermined rotational speed or higher, both centrifugal brake arms 95 are rotated in the direction of rotation on the side that is engaged with the support pin 94, as shown in FIG. The brake knees 96 are rotated outward by centrifugal force around the end, and both brake knees 96 uniformly contact the inner circumferential surface of the fixed brake body 90 without shifting, thereby regulating the rotational speed of the rotating shaft 500.

Therefore, even when rewinding due to its own weight, the slatton yatch 25 is lowered slowly, with its falling speed being regulated, in substantially the same way as when rewinding by the motor 27 described above.

On the other hand, as is clear from FIGS. 4, 12, and 13, a support pin 98 is provided on the inner surface of the side wall of the cylindrical casing 91 of the brake mechanism 32 so as to protrude into the brake body 93. .

A pair of brake arms 99 are rotatably disposed in correspondence with the inner peripheral surface of the brake body 93 so as to engage with the support pin 98 at an arcuate engagement portion 99a formed at one end. , brake shoes 100 that can move into and out of contact with the inner circumferential surface of the brake body 93 are added to their outer circumferential surfaces.

A spring 101 is installed between both brake arms 99 in close proximity to the support pin 98, and biases the brake arm 99 in a direction to separate from the brake body 93.

A brake actuation shaft 102 is rotatably supported on the side wall of the cylindrical casing 91 so as to correspond to the other ends of both brake arms 99, and a cam portion 10 is formed at one end thereof.
2a is placed in contact between the other ends of both brake arms 99, and the rotation of the actuating shaft 102 causes the brake arm 99 to rotate.
is brought into contact with and away from the brake body 93.

Therefore, in a state where the brake arm 99 is in contact with the inner circumferential surface of the brake body 93 via the brake shoe 100 as shown in FIG.
When the shutter is manually rotated in the winding direction by the handle, the rotation shaft 5 is rotated by the one-way rotation clutch 92.
0, the brake body 93 is in a free state and no brake is applied to the rotating shaft 50, and the slat shutter 25 can be easily rolled up by manual operation.

On the other hand, when the above-mentioned manual operation is stopped, the rotating shaft 50 is about to be rotated in the unwinding direction by the weight of the Slatton Yatsuta 25, but in this case, the brake body 93 is rotated by the one-way rotation clutch 92. A brake is applied to the rotary shaft 50 by being connected to the shaft 50, thereby reliably preventing the slat shutter 25 from falling due to its own weight.

Next, the configuration of the brake release mechanism 33 for rotating the brake actuation shaft 102 to release the brake mechanism 32 will be explained in particular in FIGS. 4, 14, 15, 16, and 17. To explain in detail according to the drawings, a box-shaped casing 110 is fixed to the side surface of the casing 91 of the brake mechanism 32, and the casing 110 includes a mounting plate 110a for mounting various parts of the brake release mechanism 33, and a mounting plate 110a for mounting various parts of the brake release mechanism 33. and a cover 110b that covers the side part of the cover 110b.

From the motor shaft 27a of the motor 27 to the clutch mechanism 30
As is clear from FIG. 4, the rotary shaft 50 extends through the deceleration mechanism 51, the water turbine 29, and the speed regulating mechanism 31 to the brake mechanism 32. through the outer cover 11
It extends to the vicinity of 0b, and an engaging portion 111 is cut out at its tip.

A through hole 112 is formed in the cover 110b of the casing 110 so as to correspond to the engaging portion 111 of the rotating shaft 50, as shown by the chain line in FIG.
An operating handle 113 can be attached to the engaging portion 111 through the opening.

Therefore, in the event of a power outage, etc., the rotating shaft 50 can be rotated by the operation lever 113, and the slat shutter 25 can be easily opened manually.

Next, the internal configuration of the casing 110 will be explained. The brake operating shaft 1 in the brake mechanism 32
02 extends into the casing 110 through the mounting plate 110a, and has a driver groove 114 formed in its end surface.

A rotating lever 1 is provided at the tip of the brake operating shaft 102.
15 is a pair of mounting arms 1 protruding from approximately the center thereof;
16 and fixed screws 117 in a substantially horizontal state.

A solenoid 118 that is energized when the motor 27 is started is fixed to the inner surface of the mounting plate 110a so as to be disposed under the lower force of one end of the rotary lever 115.
8a is connected to one end of the rotating lever 115 by a connecting pin 119.

Therefore, when the slat shutter 25 is wound up or rewinded by starting the motor 27, the solenoid 118 is energized and the movable iron core 118a is actuated downward, and the brake actuation shaft 102 is moved through the rotary lever 115.
is rotated in the direction of the arrow in FIGS. 14 and 12.

With the rotation, the brake shoe 1 is moved by the cam portion 102a on the brake operating shaft 102 as shown in FIG.
The brake arm 99, which had been held in contact with the brake body 93 via the brake cylinder 93, is rotated inward by the action of the spring 101, and as shown in FIG. The brake on the rotating shaft 50 is released.

Furthermore, in this embodiment, the brake actuation shaft 102 of the brake mechanism 32 is extended into the casing 110 of the brake release mechanism 33 as described above, and is exposed to the outside when removed from the cover 110b'. , as the brake shoe 100 of the brake mechanism 32 is used.
is worn out, loosen the fixing screw 117, engage a driver in the driver groove 114 to rotate the brake operating shaft 102, adjust the gap between the brake shoe 100 and the brake body 93, and then remove the fixing screw 117. screw 117
, the attachment angle of the brake actuation shaft 102 to the rotary lever 115 changes, and even though the movable core 118a of the solenoid 118 is operated within a certain range, a stable braking condition is always maintained. be able to.

On the other hand, the other end of the rotating lever 115 is under the force (j,).

The brake operating shaft 1 is activated via the rotary lever 115 by manual operation in the event of a power outage or automatic operation in the event of a fire.
An actuating device is provided for rotating the brake lever 02 in the brake release direction.

Hereinafter, its structure will be explained in detail with reference to FIGS. 14 to 17. When the other end of the movable lever 115 is pressed down, a support plate 1 is attached to the inner surface of the additional plate 10a of the casing 110.
20 is installed.

An operating rod 121 is supported at the upper end of the support plate 120 so as to be movable up and down so as to be able to engage with the rotating lever 115, and a locking protrusion 121 is provided on the outer periphery near the lower end of the support plate 120.
a and a step portion 121b for operating the switch are formed.

A spring 1 is provided between the operating rod 121 and the support plate 120.
22 is provided to bias the actuating rod 121 upwardly.

A locking member 123 is rotatably supported on the support plate 120 so as to correspond to the locking protrusion 121a of the operating condo 1210, and the locking member 123 is provided at the upper end of the locking member 123 as shown in FIG. A row 2124 that engages with the upper end of the projection 121a to lock the operating rod 121 in the lower position is rotatably supported.

A spring 1 is provided between the lock member 123 and the support plate 120.
25 is provided, and the locking member 123 is rotated in the clockwise direction to keep the roller 124 in constant contact with the locking protrusion 121a, as shown in FIGS. 16 and 17.

An engagement piece 123 formed on a side edge of the locking member 123
A manual release member 126 is rotatably supported on the support plate 120 so as to be able to engage with the manual release member 126, and a spring 127 is suspended between the upper end of the manual release member 126 and the rotation lever 115.

An operating rope 128 attached to the upper end of the manual release member 126 extends downward through the lower surface of the mounting plate 110a of the casing 110, and has an operating handle 129 frosted at its lower end. .

Therefore, as shown in FIGS. 14 to 16, the roller 124 on the locking member 123
The operating rod 121 engages with the upper end of the rotating lever 1a.
15, the brake mechanism 32 is in the braking state shown in FIG. 12, and the slat shutter 25 is held in the open position.

When manually closing the slat shutter 25 in the open position during a power outage, etc., use the operating handle 12.
9 is pulled downward, the manual release member 126 is rotated clockwise from the state shown in FIG. The actuating rod 121 is separated from the upper end of the portion 1'' 21a and is projected upward by the action of the spring 122.

With the protrusion, the upper end of the actuating rod 121 comes into contact with the lower surface of the end of the rotary lever 115 as shown in FIG.
02 is rotated in the direction of the arrow in FIGS. 14 and 12, the brake mechanism 32 is released in the same manner as when the solenoid 118 is excited, and the slat shutter 2
5 is rewound by its own weight while being speed-controlled by the speed regulating mechanism 31 and enters the closed state.

On the other hand, a solenoid 130 connected to a smoke detection device (not shown) installed at an arbitrary location indoors is attached to the inner surface of the mounting plate 110a of the casing 110, and one end of the movable core 130a of the solenoid is attached to the inner surface of the mounting plate 110a. It is adapted to engage with the lower end of the locking member 123.

Therefore, in the event of a fire, the smoke detector detects solenoid 13.
0 is excited, the movable iron core 130a moves as shown in FIG.
The locking member 123 is rotated in the direction of unlocking the actuating rod 121 by being moved to the right from the state shown in FIG.
115 and the brake operating shaft 102, the brake mechanism 32 is released, and the slat shutter 25 is automatically rewound from the open state to prevent the spread of fire.

Further, a support plate 1 is provided on the inner surface of the mounting plate 110a so as to correspond to the other end of the movable iron core 130a of the solenoid 130.
A release lever 132 is supported so as to be vertically movable via a lever 31, and a chevron-shaped protrusion 132a that can be engaged with the end of the movable iron core 130a is formed on the side surface of the release lever 132.

A spring 133 is provided between the release lever 132 and the mounting plate 110a, and urges the release lever 132 upward.

A connecting wire 135 attached to a part of the release lever 132 with a mounting bolt 134 extends outward from the bottom of the casing 110 and is connected to a temperature fuse of a temperature sensing device (not shown) installed at an arbitrary location indoors. As a result, the release lever 132 is held in the lower position shown by the solid line in FIG. 14 against the force of the spring 133.

Therefore, when the temperature fuse in the temperature sensing device blows out in the event of a fire, the release lever 132 is moved to the first position by the spring 133.
The movable iron core 130a of the solenoid 130 is moved to the upper position shown by the chain line in FIG.
is projected to the right, the brake mechanism 32 is released in the same manner as when the smoke detector is activated, and the slat shutter 25 is automatically rewound from the open state.

As mentioned above, when the slat shutter 25 is automatically closed by a smoke detection device or a temperature sensing device due to the occurrence of a fire, the switch actuation step portion of the actuation rod 121 can be used to notify the emergency situation. 121b, a switch 136 is added to the inner surface of the additional plate 10a of the casing 11'0, and this switch 136 is connected to a notification lamp, notification buzzer, etc. provided on a control panel (not shown). .

Therefore, as shown in FIG. 17, when the actuating rod 121 is moved upward and the brake mechanism 32 is released to close the slat shutter 25, the switch 136 is operated by the stepped portion 121b on the actuating rod 121. The notification lamp or notification buzzer is energized to notify the occurrence of an emergency situation.

Further, as shown in FIG. 17, in order to return the operating rod 121 which has been operated to the upper brake release position to the lower locking position when the lock is released by manual or automatic operation, a lock is attached to the lower end of the operating rod 121. A rope 137 for return operation is attached and extends outward from the bottom of the casing 110, and a handle 138 for operation is provided at the lower end of the rope 137.

Therefore, when the operating handle 138 is pulled downward in the state shown in FIG. 17, the operating rod 121 is moved downward against the spring 122, and the locking member 123
roller 12475 locking protrusion 1 of operating rod 121
By engaging the upper end of 21a, the actuating rod 121 is locked in the downward vertical position.

As a result, the rotation lever 115 is moved to the first position by the spring 127.
The brake mechanism 32 is rotated back from the rotational position shown in FIG. 7 to the almost horizontal position shown in FIG.
The locking member 12 is switched to the braking state shown in the figure.
When the three-force locking position is rotated and returned, the manual release member 12
6 or the movable iron core 130a of the solenoid 130 is the first
The state shown in FIG. 7 is returned to the state shown in FIGS. 14 and 15.

In this embodiment, as shown by the chain line in FIG. 14, the temperature fuse of the temperature sensing device is connected.

At the time of fusing, the chevron-shaped projection 132a formed on the side surface of the release lever 132 is moved upward beyond the horizontal axis of the movable core 130a, so
When the lever 30a returns, the chevron-shaped protrusion 132a of the release lever 132
The brake release mechanism 33 can be operated to return to its original state before replacing the temperature fuse without causing any trouble.

Next, when the motor 27 operates to open and close the slat shutter 25 or the water turbine 29 operates to release the slat shutter 25, an opening/closing operation limiting mechanism 34 is activated to detect the completion of the operation and stop the motor 27 or the water turbine 29. To explain the configuration in detail with particular reference to FIGS. 1, 3, and 9, the motor 27 is arranged above the motor 27.
A support plate 140 is added to the outer peripheral upper surface of the casing of the speed reduction mechanism 40, and a switch casing 141 is fixed to the upper surface of the support plate 140.

A threaded rod 142 is rotatably supported through the switch casing 141 so as to extend parallel to the motor shaft 27a of the motor 27, and has threaded portions 14 at two locations on its outer periphery.
2a and 142b are formed.

A sprocket 143 is attached to one end of the threaded rod 142, and a chain 144 is hung between the sprocket 143 and the sprocket 45 on the output shaft 28, so that the threaded rod 142 rotates as the output shaft 28 rotates. It is designed to rotate in conjunction with each other.

A guide rod 145 is disposed in the switch casing 141 in parallel with the threaded rod 142, and the threaded portion 142a of the threaded rod 142 has two guide rods so that the guide rod 145 guides the rod 145 only in the axial direction. moving member 146A,
146B is engaged and moved to the right or left as the threaded rod 142 rotates.

One moving member 146A or the other moving member 14 at both ends of the moving range of the moving members 146A, 146B.
A pair of limit switches 147A, 147A, 147A, 147B are actuated by switch casing 141.
7B are provided, and those limit switches are connected to motor 2.
7 is connected to the starting circuit.

Therefore, when the motor 27 is started in the shutter winding direction in the state shown in FIG. 3, the threaded rod 142 is rotated in the same direction in conjunction with the output shaft 28, and the moving members 146A,
B is moved to the right.

Then, when the output shaft 28 is rotated by a predetermined amount and the winding operation of the slat shutter 25 is completed, the right moving member 146A engages the right limit switch 147A, the starting circuit of the motor 27 is opened, and the motor 27 will be stopped automatically.

On the other hand, when the motor 27 is started in the shutter rewinding direction, the threaded rod 142 is rotated in conjunction with the output shaft 28 in the opposite direction to the shutter rewinding direction, and the moving member 14
6A, 146B are moved to the left and when the rewinding operation of the slat shutter 25 is completed, the left moving member 146B operates the left limit switch 147B and the motor 27 is automatically stopped.

Further, a guide groove 148 is formed in the support plate 140 so as to correspond to the threaded portion 142b of the threaded rod.
A moving member 149 is detachably disposed at the tip of the threaded portion 142b so as to be guided and moved only in the axial direction by the threaded portion 142b.

A spring 151 is provided between the bearing portion 150 provided on the support plate 140 and the moving member 149, and as shown in FIG.
It is designed to be biased and held in a position separated from it.

A set member 153 is rotatably supported at the end of the support plate 140 by a support shaft 152 so as to come into contact with the moving member 149, and the lower end of the set member 153 is attached to the joint 15.
4 is connected to the actuating lever 69 of the clutch mechanism 30.

Therefore, when pressure water is supplied from the fire hose into the water supply pipe 71 and the operating lever 69 is rotated by the pressure receiving device 81 to engage the clutch mechanism 30, the set member 153 is moved as shown in FIG. The moving member 149 is rotated clockwise, and the moving member 149 is set in a state where it is engaged with the tip of the threaded portion 142b of the threaded rod 142 against the force of the spring 151.

When the water wheel 29 is rotated by the pressure water supplied from the water supply pipe 71 and the winding operation force of the slat shutter 25 is started, the threaded rod 142 moves in conjunction with the output shaft 28.
are rotated in the same direction, and the moving member 149 is rotated in the same direction as the guide groove 14.
Stayed at 8 and moved to the right.

The movable member 1 is operated by the movable member 149 when the output shaft 28 is rotated by a predetermined amount and the winding operation of the slat shutter 25 by the water turbine 29 is completed.
A switching member 155 is disposed near the end of movement of 49,
A connecting wire 156 connected to the switching member 155 passes through the moving member 149 and extends downward to the side.

A switching valve 157 is provided between the water supply pipe 11 and the drain pipe 73 as shown in FIGS. 2, 6 and 7, and the connecting wire 156 is connected to the switching lever 158 of the switching valve 157. The bottom end of is connected.

Therefore, when the shutter winding operation by the water wheel 29 is completed as described above, the switching member 15 is moved by the moving member 149.
5 is actuated to the right, the switching lever 158 is rotated in the direction of the arrow in FIG. 6 via the connecting wire 156, and the switching valve 157 is operated to switch.

As a result, the flow path of the water supply pipe 71 is switched from the water turbine 29 side to the drain pipe 73 side, the water turbine 2975 is stopped dynamically, and the slat shutter 25 is held in the open position by the action of the one-way rotation clutch 640. Ru.

In this embodiment, the clutch mechanism 30 is released and the switching valve 157 is returned to its original state by manual operation.

As detailed above, the present invention provides a clutch mechanism between the water turbine and the rotating shaft operably connected to the motor shaft, so that the water turbine is held in a stopped state when the shutter is opened and closed by the motor. It does not reduce the power of the motor, but it also reduces wear on the water wheel and improves its durability.When the water wheel is rotated by pressurized water supplied from a fire hose, the clutch mechanism is connected. This allows the windshield to be rolled up via the motor shaft, providing an excellent effect of opening the shutter reliably and quickly in the event of a fire.

Moreover, this invention provides a pressure receiving device for connecting and operating the clutch mechanism in the middle of the water supply pipe of the water turbine, so that pressurized water is supplied from the fire hose into the water supply pipe and at the same time, the pressure receiving device The clutch mechanism is activated in the direction of connecting the water turbine and the rotary shaft operatively connected to the motor shaft, and the shutter can be opened automatically and quickly by simply supplying pressurized water from the fire hose into the water supply pipe. It has excellent effects.

Furthermore, this invention is configured so that the motor cannot be started when the shutter is being wound up as the water wheel rotates, so that when the water wheel is winding up the shutter, the motor is accidentally moved in the direction of rewinding the shutter. The shutter can be reliably prevented from being activated, and the shutter can be safely opened without any hindrance in an emergency such as a fire.

Note that this invention is not limited to the design of the embodiments described above, and can be arbitrarily modified without departing from the spirit of the invention.

[Brief explanation of drawings]

Figure 1 is a front view from the indoor side showing the installation state of a shutter opening/closing device embodying this invention, and Figure 2 is a front view of the shutter opening/closing device embodying this invention.
FIG. 3 is an enlarged partial sectional view of approximately the right half of the main body of the shutter opening/closing device in FIG. 1, and FIG. A partial cross-sectional view showing the left half enlarged, Figure 5 is 4- in Figure 4.
6 is a cross-sectional view of the water turbine section taken along line 4, FIG.
The figure is a cross-sectional view of the pressure receiving device section taken along line 7-7 in Figure 6.
Fig. 8 is an enlarged sectional view showing an example of a pressure valve provided at the tip opening of a water supply pipe, Fig. 9 is a sectional view of main parts showing the operating state of the clutch mechanism by the pressure receiving device, and Fig. 10 is the same as Fig. 4. FIG. 11 is a cross-sectional view of the main part showing the operating state of FIG. 10, and FIG.
Cross-sectional view of the brake mechanism taken along line 12-12 in the figure, 1st
Fig. 3 is a sectional view of the main part showing the operating state in Fig. 12, Fig. 14 is an enlarged sectional view of the brake release mechanism taken along line 14-14 in Fig. 4, and Fig. 15 is a sectional view of the brake release mechanism, especially on the right side in Fig. 14. FIG. 16 is an enlarged cross-sectional view of a main part showing details of the actuating device arranged, FIG. 16 is a cross-sectional view of a main part of the actuating device of FIG.
FIG. 6 is a sectional view showing the operating state of FIG. 6; Slat shutter...25, Motor...
・27, Output shaft...28, Water turbine...2
9. Clutch mechanism...30. Reduction mechanism...
...40,51, Operating lever...69, Water supply pipe...71, Pressure valve...72, Drain pipe...73, Pressure receiving device... ...81, Safety switch...8γ.

Claims (1)

[Scope of Claims] 1. A motor, an output shaft operatively connected to one end of the motor shaft on one side of the motor to drive a shutter winding extension shaft, and the other end of the motor shaft on the other side of the motor. a rotating shaft operatively connected to the water supply pipe; an inlet connected to the water supply pipe; and an outlet connected to the drain pipe; When the water wheel is rotated by supplying pressure water into the water wheel from the water wheel placed on the rotating shaft and the fire hose, the water wheel and the rotating shaft are connected to rotate the output shaft in the shutter winding direction. When pressure water is supplied into the water supply pipe from a fire hose, a clutch mechanism installed between the water turbine and the rotating shaft senses this and moves the clutch in the direction that connects the water turbine and the rotating shaft. When the water wheel is being rotated in the shutter winding direction by a pressure receiving device installed in the middle of the water supply pipe and pressure water from the water supply pipe to operate the mechanism, the motor is accidentally started in the shutter rewinding direction. a switch that senses when the clutch mechanism is actuated in the direction of connecting the water turbine and the rotating shaft and opens the motor starting circuit in order to prevent Switchgear for. 2. The output shaft is operatively connected to a rotating shaft via a reduction mechanism, and the rotating shaft is operatively connected to a water turbine via another reduction mechanism. An opening/closing device for a shutter according to item 1. 3. The pressure receiving device includes a pressure chamber branched from a part of the water supply pipe, a pressure receiving member provided in the pressure chamber so as to be operated by pressurized water in the water supply pipe, and a clutch mechanism that controls the operation of the pressure receiving member. 2. The opening/closing device for a shutter according to claim 1, further comprising a transmission member for transmitting a signal to the user.