JP5296895B2 - Switchgear - Google Patents

Description

  The present invention relates to an opening / closing device adapted to stop the closing operation of the opening / closing body when the opening / closing body during the closing operation comes into contact with an obstacle, and more particularly to an opening / closing device suitable as a fire shutter device.

  Conventionally, in this type of invention, when the opening / closing body (shutter curtain 2) during the closing operation is in contact with an obstacle on the closing direction, such as that described in Patent Document 1, for example, The movable seat plate (lower seat plate 101) at the lower end of the body is relatively raised by the pressing force from the obstacle, and the rise of the movable seat plate is sensed by the sensing unit (micro switch 105), and this sensing signal is coded. (11a to 11c) is transmitted to the control device (8), and the brake mechanism of the switch (7) is actuated by the control signal from the control device (8) to close the opening / closing body (shutter curtain 2). There is something to stop.

The structure of the brake mechanism in the opening / closing machine (7) will be described in detail. When the electromagnetic solenoid (electromagnetic clutch 17) is in a non-energized state, for example, as described in Patent Document 2, the brake drum ( 4) comes into contact with the brake shoe (2) by the urging force of the brake spring (16), and the rotation of the drive shaft (motor shaft 1) is braked.
When the electromagnetic solenoid (electromagnetic clutch 17) is energized, the brake drum (4) is separated from the brake shoe (2) by being attracted by the magnetic force of the electromagnetic solenoid, so that the drive shaft (motor shaft 1) rotates. It becomes a free state.

  Therefore, for example, when the opening / closing apparatus described in Patent Document 1 is equipped with the switch described in Patent Document 2, the electromagnetic solenoid (electromagnetic clutch 17) is energized to open / close the shutter (shutter curtain). 2) can be lowered by its own weight, and when the opening / closing body (shutter curtain 2) comes into contact with an obstacle during its own weight drop, if the electromagnetic solenoid (electromagnetic clutch 17) is deenergized, The closing operation of the opening / closing body (shutter curtain 2) can be stopped.

  However, in the configuration as described above, a structure (fixed pulley 18a, movable pulley 18b) that houses a sensing unit (micro switch 105) that senses the rise of the movable seat plate (lower seat plate 101) and cords (11a to 11c). , Flat bar 20 etc.) is complicated and is likely to cause an increase in cost.

Further, when the opening / closing device is used as a fire shutter device, for example, even when a power failure caused by a fire or the like occurs, the electromagnetic solenoid (electromagnetic clutch 17) is energized and the opening / closing body (shutter curtain 2) is self-weighted. It is equipped with a battery so that it can descend.
However, even in such a configuration, the energization state of the electromagnetic solenoid (electromagnetic clutch 17) cannot be maintained when the power of the battery cannot be sufficiently obtained due to poor maintenance or the like. There is a possibility that the (shutter curtain 2) cannot be lowered by its own weight, or the opening / closing body under its own weight is stopped halfway.

JP 2004-308222 A Japanese Utility Model Publication No. 01-118084

  An object of the present invention is to provide an opening / closing device capable of stopping the closing operation of the opening / closing body by contact with an obstacle and improving the safety of the automatic return operation for resuming the closing operation of the opening / closing body. Is to provide.

  One means for solving the above problems is an open / close body main body that can be closed while sliding, and is connected to an end of the open / close body main body in the closing direction and is movable in an opening direction relative to the open / close body main body. A movable seat plate, a brake mechanism that brakes or releases the closing operation of the opening / closing body main body by moving the operation unit, and an automatic closing that closes the opening / closing body main body when receiving a signal An opening / closing device that is mechanically interlocked with the movement of the movable seat plate in the opening direction relative to the opening / closing body main body to change the brake mechanism from a released state to a braking state, The brake mechanism is configured to change from the release state to the braking state by movement in one direction of the operation unit, and to be released from the braking state by movement of the operation unit in the reverse direction. To both directions A pressure actuating member capable of idling and a damper means, and the pressure actuating member is slid in one direction in conjunction with the movement of the movable seat plate facing the opening / closing body in the opening direction. The operation portion is braked by the slidable movement of the movable seat plate relative to the opening / closing body main body in the closing direction, and the pressing operation member is slid in the reverse direction so that the operation portion is moved by the pressing operation member. The damper means is configured to perform a release operation, and the damper means gives little resistance to the sliding of the pressing operation member in the one direction, but gives resistance to the sliding of the pressing operation member in the reverse direction. The pressure actuating member is configured to reduce the moving speed in the reverse direction.

Since the present invention is configured as described above, the following effects can be obtained.
Since the brake mechanism is moved from the released state to the braked state mechanically in conjunction with the movement of the movable seat plate relative to the opening / closing body in the opening direction, the opening / closing body is not easily affected by power failure. Can be stopped by contact with an obstacle.
In addition, when the closing operation of the opening / closing body is resumed, the release operation of the brake mechanism can be performed at a low speed by the damper means of the automatic closing device, and thus the safety of the automatic return operation can be improved.

It is a front view which shows an example of the switchgear concerning this invention. It is a schematic diagram which shows the operating state of the switchgear, (a) shows the state which the opening-closing body is closing operation, (b) makes a brake mechanism into a braking state with the tension | tensile_strength which generate | occur | produces a string-like member, The state which stopped the closing operation is shown. It is structural drawing which shows an example of the opening / closing machine and automatic closing apparatus which are used for the opening / closing apparatus, and has shown the state which braked the drive shaft. It is a schematic diagram which shows the operating state of a brake mechanism and an automatic closing device, (a) shows a normal state corresponding to a fully opened stop state of the opening and closing body, and (b) automatically closes the opening and closing body by releasing the automatic closing device. (C) shows a state where the brake mechanism is in a braking state due to the tension acting on the string-like member and the automatic closing of the opening / closing body is stopped. It is principal part sectional drawing which shows the other examples of the switchgear concerning this invention. It is a principal part front view which shows the other examples of the switchgear concerning this invention. It is a principal part front view which shows the other examples of the switchgear concerning this invention. In other examples of the switchgear, it is a mimetic diagram showing an operation state, (a) shows a state where an opening and closing body is closing operation, (b) puts a brake mechanism into a braking state by tension generated in a string-like member. The state where the closing operation of the opening / closing body is stopped is shown. In the switchgear concerning the present invention, it is a mimetic diagram showing other examples of an automatic closure device, (a) shows a normal state corresponding to a full-open stop state of an opening-and-closing body, (b) is an automatic closure device released. A state in which the opening / closing body is closed is shown, and (c) shows a state in which the brake mechanism is in a braking state by the tension acting on the string-like member and the automatic closing of the opening / closing body is stopped. In the switchgear concerning the present invention, it is a mimetic diagram showing other examples of an automatic closure device, (a) shows a normal state corresponding to a full-open stop state of an opening-and-closing body, (b) is an automatic closure device released. A state in which the opening / closing body is closed is shown, and (c) shows a state in which the brake mechanism is in a braking state by the tension acting on the string-like member and the automatic closing of the opening / closing body is stopped.

The first form is an opening / closing body main body that can be closed while sliding, a movable seat plate that is connected to the closing direction end of the opening / closing body main body and is movable in the opening direction relative to the opening / closing body main body, A brake mechanism that brakes or releases the closing state of the opening / closing body main body by moving the operation section, and moves the movable seat plate in the opening direction relative to the opening / closing body main body. An opening / closing device that is mechanically interlocked to change the brake mechanism from a released state to a braking state, and is biased in the winding rotation direction by a biasing member between the opening / closing body and the movable member. The winding body is supported so that one end side of the string-like member is fixed to the operation portion of the brake mechanism, and the other end side is wound around the winding body, and the winding body is opposed to the opening / closing body main body. When the movable seat is moved in the opening direction, these The winding body is brought into contact with one or both of the closed body and the movable seat plate to suppress the rotation of the winding body and to generate tension in the string-like member. The operation unit is moved to change the brake mechanism from the released state to the braked state.
According to the first aspect, during the closing operation of the opening / closing body main body, when the movable seat plate contacts the obstacle and moves in the opening direction relative to the opening / closing body main body, the opening / closing body body and / or the movable seat plate Thus, the winding body is slidably contacted, the rotation of the winding body is suppressed, and the string-like member is tensioned by the weight of the opening / closing body main body and the movable seat plate. And the operation part of a brake mechanism moves and is operated by the said tension | tensile_strength, and a brake mechanism will be in a braking state from a release state.
Therefore, the closing operation of the opening / closing body can be stopped by contact with an obstacle with a mechanical structure that is not easily affected by a power failure or the like.

Here, the above-described opening / closing device includes an aspect in which the opening / closing body is used to perform only the closing operation (for example, a fire shutter device), an aspect in which the opening / closing body is used to perform both the opening operation and the closing operation, and the like. Including.
Further, in this opening / closing device, the opening / closing body is wound by the winding shaft on the opening direction side, and the mode in which the opening / closing body is fed out from the winding shaft, or the opening / closing body is wound on the storage portion on the opening direction side. A mode (for example, an overhead door etc.) etc. which are stored without being stored and fed out from the storage site are included.

  The opening / closing body includes an aspect in which a plurality of slats and pipes are continuously provided in the opening / closing direction, an aspect in which one or more panels, a sheet-like object, and a net-like object are provided in the opening / closing direction, or a slat. , A panel, a pipe, a sheet-like material, a net-like material, or the like.

In addition, a known mechanism may be used as the brake mechanism, and the brake mechanism is configured to brake the rotation of the winding shaft that winds or unwinds the opening / closing body, or directly contacts the opening / closing body. And a mode of braking the closing operation of the opening / closing body main body.
The brake mechanism is provided with an operation unit that is moved and operated in order to brake the closing operation of the opening / closing body or to release the braking state.
The operation unit includes, for example, a mode of moving by a rotary motion, a mode of moving by a linear motion, a mode of moving so as to swing.

Moreover, the said winding body is provided so that it may rotate by the urging | biasing force of urging members, such as a mainspring spring and a coil spring, and wind up the said string-like member.
When the movable seat plate moves in the opening direction, the winding body is brought into contact with either the opening / closing body main body or the movable seat plate, and rotation is suppressed. The contact at this time may be contact with the outer peripheral surface of the winding body, or may be contact with the side surface of the winding body. The abutment may be any abutment that suppresses at least the rotation of the winding body in the feeding direction, and the abutment includes sliding contact, engagement, engagement, fitting, and the like.

In the second embodiment, the opening / closing device includes a guide rail that surrounds the widthwise end of the opening / closing body and guides the opening / closing body in the opening / closing direction, and the winding body is disposed outside the guide rail. The string-like member is inserted into the guide rail and guided to the winding body outside the guide rail by a pulley member supported on the closing direction side of the opening / closing body.
According to said 2nd form, since it is set as the structure which does not arrange | position a winding body in a guide rail, it can avoid that a guide rail will enlarge.

Further, in the third embodiment, the opening / closing body main body that can be closed while sliding, and a movable seat plate that is connected to the closing direction end of the opening / closing body main body and is movable in the opening direction relative to the opening / closing body main body And a brake mechanism that brakes or releases the closing state of the opening / closing body main body by moving the operation portion, and in the opening direction of the movable seat plate facing the opening / closing body main body. An opening / closing device that mechanically interlocks with the movement of the brake so that the brake mechanism is changed from a released state to a braked state, and a pulley member is rotatably supported between the opening / closing body and the movable member. The winding member is supported on the stationary part of the pulley member on the opening direction side so as to be urged in the winding rotation direction by the urging member, and one end side of the string-like member is stopped at the operation portion of the brake mechanism. And the other end side of the pulley member Wrapped around the lower half side and wound around the winding body, and when the movable seat plate moves in the opening direction relative to the open / close body body, one of the open / close body body and the movable seat plate Alternatively, the pulley member is brought into contact with both sides to suppress the rotation of the pulley member and generate tension on the string-like member, and the operation unit is moved by the tension to release the brake mechanism from the released state to the braking state. I tried to do it.
According to the third aspect, when the movable seat plate comes into contact with an obstacle and moves in the opening direction relative to the open / close body during the closing operation of the open / close body, these open / close body and / or the movable seat plate Rotation of the pulley member is restrained by sliding contact, and tension is generated in the string-like member due to the weight of the opening / closing body body and the movable seat plate. And the operation part of a brake mechanism moves and is operated by the said tension | tensile_strength, and a brake mechanism will be in a braking state from a cancellation | release state.
Therefore, the closing operation of the opening / closing body can be stopped by contact with an obstacle with a mechanical structure that is not easily affected by a power failure or the like.

  When the movable seat plate moves in the opening direction, the pulley member is brought into contact with either the opening / closing body main body or the movable seat plate, and the rotation is suppressed. The contact at this time may be contact with the outer peripheral surface of the pulley member, or may be sliding contact with the side surface of the pulley member. The contact may be contact that suppresses at least one rotation of the pulley member (specifically, rotation in a direction in which the string-like member is returned to the operation unit side). Including sliding contact, engagement, meshing, and fitting.

Moreover, in the 4th form, the tension | pulling spring was connected with respect to the said string-like member so that the slack of the said string-like member might be prevented.
According to the fourth aspect, it is possible to prevent the operation of the brake mechanism from being delayed or dull due to the slack of the string-like member.

  Here, it is preferable that the tension spring is linearly connected to an end portion or an intermediate position of the string-like member, but it is also possible to adopt an aspect in which the string-like member is connected to be pulled in the crossing direction. It is.

In the fifth embodiment, the brake mechanism is changed from the released state to the braked state by movement of the operation unit in one direction, and from the braked state to the released state by movement of the operation unit in the reverse direction. The damper means is configured to reduce the moving speed of the operation unit in the reverse direction.
According to the fifth aspect, for example, after the closing operation of the opening / closing body main body is stopped by the contact of the obstacle with the movable seat plate, the movable seat plate is opposed to the opening / closing body main body by removing the obstacle or the like. When the brake mechanism is moved from the braking state to the release state and the closing operation of the opening / closing body is resumed, the release operation of the brake mechanism can be performed at a low speed by the damper means, and thus the automatic return Operational safety can be improved.

  Here, the damper means includes a known damper device that provides resistance to the movable member by gas pressure, fluid friction, or the like, such as an embodiment composed of a biston and a cylinder, or a rotary damper.

In the present specification, the “opening / closing body thickness direction” means the thickness direction of the opening / closing body in the closed state.
Further, in this specification, the “opening / closing body width direction” means a direction that is substantially orthogonal to the opening / closing direction of the opening / closing body and not the thickness direction of the opening / closing body.
Further, in this specification, the “opening / closing body opening / closing direction” means a direction in which the opening / closing body slides in order to partition or open the space.

  Next, a particularly preferred embodiment of the above embodiment will be described in detail with reference to the drawings.

  The following embodiments are disposed in and inside an opening or inside of a housing such as a house, building, warehouse, factory, underground mall, tunnel, or vehicle loading platform, and open and close the opening or partition or open the space inside the housing. As an especially preferred embodiment, an example applied to a fire-proof shutter device that is automatically closed in the event of an emergency such as a fire to prevent the spread of flames and smoke will be described.

  The opening / closing device 1 includes an opening / closing body 10 that opens and closes by sliding an end portion in the closing direction, a guide rail 20 that surrounds and guides the opening / closing direction of the opening / closing body 10 in the width direction (left-right direction in FIG. 1), A winding device 30 for winding and unwinding the opening / closing body 10, and if the obstacle X is present in the opening / closing path of the opening / closing body 10, the mechanical interlocking means A, the brake mechanism 42, etc. The closing operation of the opening / closing body 10 is stopped.

The opening / closing body 10 includes an opening / closing body main body 11 and a movable seat plate 13 connected to the end of the opening / closing body main body 11 in the closing direction.
The opening / closing body 11 is connected to a plurality of so-called slats 11a formed by bending a horizontally long substantially rectangular metal plate so as to rotate between the vertically adjacent slats 11a, 11a, and the plurality of slats 11a. The connecting member 11b is connected to the lowermost end of the.

According to the example shown in FIG. 2, the connecting member 11 b is formed in a substantially concave shape with the opening facing downward, and a through hole 11 b 1 for loosely inserting a string-like member a 1 of the interlocking means A described later on the upper wall surface thereof. And a protrusion 11b2 for contacting the winding body a2 supported by the movable seat plate 13.
And the movable seat board 13 is supported by the lower end side of this connection member 11b so that it may slide to an opening-and-closing body opening-closing direction (up-down direction of illustration).

The movable seat plate 13 is a member that protrudes downward from the connection member 11b over substantially the entire length in the opening / closing body width direction, and is engaged with the connection member 11b so as to freely slide by a predetermined amount in the opening / closing body opening / closing direction. Match.
According to the illustrated example, the movable seat plate 13 is formed in a substantially concave shape with an opening facing upward, and a winding body a2 constituting interlocking means A described later is pivotally supported in the concave portion.
The movable seat plate 13 causes the outer peripheral surface of the winding body a2 to abut on the protrusion 11b2 on the upper wall surface of the connection member 11b by sliding in the opening / closing body opening direction (upward in the drawing) relative to the connection member 11b. Thus, the slide amount is set (see FIG. 2B).

  The guide rail 20 is a member having a substantially U-shaped cross section that surrounds an end of the opening / closing body 10 in the width direction. Etc.) and the winding device 30 (see FIG. 1).

  In addition, the winding device 30 includes a winding shaft 32 that winds and unwinds the opening / closing body 10 in a storage case 31 in which an opening for allowing the opening / closing body 10 to appear and retract on the lower side, and the winding shaft. An opening / closing device 40 that rotates and brakes 32 via a power transmission means 33 such as a chain and a sprocket, and an automatic closing device 50 that releases the opening / closing device 40 to close the opening / closing body 10 by its own weight. It has.

The switch 40 is configured by providing an operation unit a3 with respect to a switch having a known structure disclosed in, for example, Japanese Utility Model Publication No. 01-118084.
As shown in FIG. 4, the opening / closing machine 40 includes a motor unit 41 serving as a rotational power source for the winding shaft 32 and a brake mechanism 42 for braking the rotation of the motor unit 41 in the casing 43. .

  The motor unit 41 is a direct current motor or an alternating current motor, and an output shaft 41b that outputs driving force and / or braking force is fixed to the center of the rotor 41a, and one end side of the output shaft 41b (see FIG. 3). In this case, the rotational force on the left end side is transmitted to the take-up shaft 32 via the power transmission means 33. A substantially disc-like brake shoe 41c is fixed to the other end side of the output shaft 41b so as to receive a braking force from the brake mechanism 42.

  The brake mechanism 42 is fixed to the brake shaft 42a arranged on the output shaft 41b in a substantially straight line, and is fixed to the motor portion 41 side of the brake shaft 42a so as to be detachable from the brake shoe 41c. The abutting brake drum 42b, a coil spring 42c that urges the brake drum 42b in the direction of the motor unit 41 (leftward according to FIG. 3), and the brake drum 42b against the urging force of the coil spring 42c. An electromagnetic solenoid 42d for suction and a lever member 42e for manually separating the brake drum 42b from the brake shoe 41c against the urging force of the coil spring 42c are provided.

  The brake shaft 42a can be rotated with an appropriate rotational resistance and is supported so as to move a predetermined amount in the axial direction.

The brake drum 42b is formed in a substantially cylindrical shape that comes into contact with or separates from the brake shoe 41c on the motor unit 41 side, and is supported so as to be rotated by a rotational force from a chain 42g wound around the outer periphery thereof. At the same time, the rotation is suppressed by the resistance received from the known rotation suppressing means 42h on the casing 43 side.
The chain 42g is provided so that the opening / closing body 10 can be manually opened / closed, but may be omitted if necessary.

The lever member 42e is a substantially bowl-shaped member configured to pull the brake shaft 42a away from the switch 40 by a swinging force acting on one end side.
More specifically, the lever member 42e is composed of a plate-like member that penetrates the brake shaft 42a. The lever member 42e intersects the brake shaft 42a and protrudes in one direction, and the lower lever portion 42e projects in the opposite direction. It is comprised integrally with the side lever part 42e2.
On the brake shaft 42a side of the upper lever portion 42e1, an upper fulcrum portion 42e1a is configured by being bent into a substantially square shape. Similarly, the lower fulcrum portion 42e2a is configured by bending the lower lever portion 42e2 on the brake shaft 42a side into a substantially square shape.

According to the lever member 42e, for example, when the upper end side of the upper lever portion 42e1 is pulled toward the motor portion 41 (left direction in FIG. 3), the brake shaft 42a side of the upper lever portion 42e1 has the upper fulcrum portion 42e1a. It swings in the direction opposite to the motor 41 (right direction in FIG. 3) as a fulcrum, and the brake shaft 42a also moves in the direction opposite the motor 41 along with the swing.
Similarly to the above, when the lower lever portion 42e2 is pulled leftward, the brake shaft 42a is pulled rightward by the swinging of the lower lever portion 42e2 with the lower fulcrum portion 42e2a as a fulcrum. .
When the upper end side of the upper lever portion 42e1 is pulled rightward, the brake shaft 42a is pulled rightward by the swinging of the upper lever portion 42e1 with the lower fulcrum portion 42e2a as a fulcrum.
Similarly, when the lower end side of the lower lever portion 42e2 is pulled rightward, the brake shaft 42a is pulled rightward by the swinging of the lower lever portion 42e2 with the upper fulcrum portion 42e1a serving as a fulcrum.

That is, regardless of which of the upper lever portion 42e1 and the lower lever portion 42e2 swings to the left or right, the brake shaft 42a is pulled and moved to the right, and the brake shaft 42a The brake drum 42b integrated with the brake shoe 41c is separated from the brake shoe 41c, and the braking force acting on the brake shoe 41c and the output shaft 41b is released.
FIG. 3 shows an initial state (braking state) before the automatic closing device 50 operates, that is, before the brake is released.

  In the opening / closing device 40 having the above-described configuration, the operation portion a3 is fixed to the swing end side of the upper lever portion 42e1 so that the upper lever portion 42e1 extends upward.

  The operation portion a3 is a substantially rod-like member made of, for example, a bolt or the like, and has a stopper portion a31 on the swing end side. When the operation portion a3 is swung by the tension of the string-like member a1 (the state shown in FIG. 4C), the stopper portion a31 abuts the operation portion a3 on a casing 51 of the automatic closing device 50 described later. Thus, the pressing operation member 52 in the automatic closing device 50 is prevented from automatically returning to the initial state (the state shown in FIG. 4A) engaged with the plunger 54a of the electromagnetic engagement / disengagement device 54, and at the same time, the operation portion a3 is operated. The tension of the string-like member a1 prevents the brake from being released due to excessive swinging in the left direction in the figure.

Further, the automatic closing device 50 is supported in a casing 51 fixed to the casing 43 of the opening / closing machine 40 so that one end side protrudes in the direction of the operating portion a3 and slides along the swinging direction of the operating portion a3. The pressing operation member 52, an urging member 53 that urges the pressing operation member 52 in the direction of the operation portion a3, and an electromagnetic engagement / disengagement device 54 that engages and disengages the pressing operation member 52 at a predetermined distance from the operation portion a3. It is equipped with.
The electromagnetic engagement / disengagement device 54 locks the plunger 54a energized by the energizing force of an energizing member such as a spring with the pressing operation member 52, and when electric power is supplied from a control unit (not shown), In this device, the plunger 54a is retracted to release the locking to the pressing operation member 52.

  According to the automatic closing device 50 configured as described above, when the electromagnetic engagement / disengagement device 54 is excited, the electromagnetic engagement / disengagement device 54 is unlocked as shown in FIG. It slides by the urging | biasing force of the urging | biasing member 53, and presses the operation part a3.

  Further, the interlocking means A pulls the string-like member a1 whose one end is connected to the operation portion a3, the winding body a2 around which the other end of the string-like member a1 is wound, and the string-like member a1 in the longitudinal direction. The movable seat plate 13 is composed of a tension spring a4, a pulley member a5 that converts the pulling direction of the string-like member a1 from a substantially vertical direction to a substantially horizontal direction, and the like, and is opposed to the opening / closing body main body 11 during the closing operation of the opening / closing body 10. The brake mechanism 42 of the opening / closing machine 40 is changed from the released state to the braked state mechanically in conjunction with the movement in the opening direction.

Although the string-like member a1 is a metal wire according to a preferred example of the present embodiment, it may be a long member having flexibility, and other examples include a belt-like object and a chain-like object. It is also possible to use a string or the like. Further, as another example of the first string-like member a1, a conductive material may be used, which also serves as an electric wire.
One end side of the string-like member a1 is connected to the operation portion a3 via the tension spring a4, and the other end side is inserted into the connecting member 11b of the opening / closing body main body 11 and fixed to the outer peripheral surface of the winding body a2. Is done.

The winding body a2 is rotatably supported with respect to the movable seat plate 13, and is urged in the winding rotation direction by a spring or coil spring (not shown).
Further, the tension spring a4 prevents the string-like member a1 from becoming slack and pulls the string-like member a1 against the biasing member 53 as shown in FIGS. Thus, an appropriate tension is set so that the operation portion a3 can be swung in the braking operation direction (left direction in the drawing).
Further, on the automatic closing device 50 side, the pulley member a5 converts the substantially vertical tension on the winding body a2 side of the string-like member a1 into a substantially horizontal tension and transmits it to the operation unit a3. The string-like member a1 is hung around.

Next, the characteristic effect of the switchgear 1 having the above-described configuration will be described in detail (see FIGS. 2 and 4).
First, in a normal state without a disaster prevention signal, as shown in FIG. 4A, the brake mechanism 42 is maintained in a braking state by a biasing force of a coil spring 42c (see FIG. 3), and the opening / closing body 10 is stationary in a fully open state. doing.

When the opening / closing device 1 in the fully open state receives the disaster prevention signal, the electromagnetic engagement / disengagement device 54 of the automatic closing device 50 is excited by the power supply from the control unit (not shown), and the locking state of the pressing member 52 is increased. It is released (see FIG. 4).
Then, the pressing operation member 52 of the automatic closing device 50 moves in the direction of the operation portion a3 (right direction in the drawing) by the urging force of the urging member 53, swings the operation portion a3, and the brake mechanism of the switch 40 42 is changed from the braking state (the state shown in FIG. 4A) to the released state (the state shown in FIG. 4B).

Therefore, inside the opening / closing machine 40, the brake drum 42b is removed from the brake shoe 41c, and the output shaft 41b can be freely rotated.
Therefore, the winding shaft 32 that is linked to the output shaft 41b via the power transmission means 33 is also in a freely rotatable state.
Therefore, the opening / closing body 10 wound around the winding shaft 32 and being in the fully opened state is drawn out from the winding shaft 32 by its own weight and performs a closing operation. During this closing operation, the string-like member a1 is moved into the movable seat plate 13. It is drawn out from the wound body a2.
The closing operation due to the weight of the opening / closing body 10 is adjusted by a speed control device (not shown) provided in the opening / closing machine 40 so as not to exceed a predetermined speed.

During the closing operation, as shown in FIG. 2 (b), when the movable seat plate 13 comes into contact with the obstacle X, the movable seat plate 13 is opened relative to the open / close body main body 11. Move in the direction (upward in the example shown).
Therefore, rotation of the winding body a2 is suppressed by the outer peripheral surface of the winding body a2 being in sliding contact with the protrusion 11b2 on the connection member 11b side.
Therefore, the weight of the opening / closing body 10 is added to the string-like member a1, and the string-like member a1 is pulled downward.
Then, this downward tensile force is converted into a substantially horizontal tensile force by the pulley member a5 on the opening direction side (upper side in the illustrated example) of the opening / closing body 10, and the operating portion a3 is caused by the tensile force. It swings in the braking operation direction (left direction in FIG. 2).

  Therefore, the rotation of the output shaft 41b is braked by the brake mechanism 42 in the opening / closing device 40, the rotation of the winding shaft 32 interlocked with the output shaft 41b is stopped, and the closing operation of the opening / closing body 10 is also stopped.

Further, when the obstacle X is removed from the contact state of the movable seat plate 13 and the obstacle X as described above, the movable seat plate 13 is positioned below the opening / closing body main body 11 and the connection member 11b by its own weight. Move to.
Therefore, in the connecting member 11b and the movable seat plate 13, the restrained state of the winding body a2 is released, and the string-like member a1 is drawn out from the winding body a2. That is, according to FIG. 2, the state (b) is changed to the state (a).

Accordingly, the weight of the opening / closing body 10 hardly acts on the string-like member a1, the tension of the string-like member a1 is loosened, and the operation portion a3 is again pressed by the pressing operation member 52 of the automatic closing device 50 and swings. . That is, according to FIG. 4, the state (c) is changed to the state (b).
Therefore, the brake mechanism 42 in the opening / closing machine 40 is again released from the braking state, and the closing operation of the opening / closing body 10 is automatically restarted.

  The means for returning the automatic closing device 50 completely to the initial state (the state shown in FIG. 4A) is not shown, but manually or electrically retracts the pressing member 52 and engages the plunger 54a. What is necessary is just composition.

  Next, another specific aspect of the switchgear according to the present invention will be described. In addition, in the aspect shown below, about the structure substantially the same as the said switchgear 1, the code | symbol in the said switchgear 1 is used as it is, and the detailed description which overlaps is abbreviate | omitted.

In the aspect shown in FIG. 5, the arrangement direction of the wound body a2 is changed.
That is, in the above embodiment, the direction of the central axis of the winding body a2 is oriented in the opening / closing body thickness direction (left-right direction in FIG. 2) as shown in FIG. The direction of the central axis of the winding body a2 is set to face in the opening / closing body width direction (front-rear direction in FIG. 5).
The winding body a2 is supported on the bottom surface of the movable seat plate 13 via a bearing bracket or the like, and is urged in a winding direction by an urging member (not shown) such as a spring spring or a coil spring.
Thus, according to the embodiment shown in FIG. 5, even when the axial dimension of the winding body a <b> 2 is relatively long, the winding body a <b> 2 is accommodated between the connecting member 11 b and the movable seat plate 13. Is possible.

2 and 5, the winding body a2 is pivotally supported with respect to the movable seat plate 13. As another example, the winding body a2 is pivotally supported with respect to the connection member 11b. The winding body a2 may be slidably contacted by the movable seat plate 13 when it moves relatively in the opening direction.
As another example, the winding body a2 may be slidably contacted with both the connecting member 11b and the movable seat plate 13.

Further, in the aspect shown in FIG. 6, a pulley member a <b> 6 is added to the opening / closing device 1 shown in FIG. 1, and the winding body a <b> 2 is arranged outside the guide rail 20.
More specifically, in the embodiment shown in FIG. 6, the pulley member a <b> 5 on the opening / closing body 10 opening direction side is disposed above the guide rail 20 and is disposed in the connection member 11 b corresponding to the guide rail 20. A pulley member a6 is provided so that a string-like member a1 is provided so as to be wound around and guided by the pulley members a5 and a6. Then, one end side of the string-like member a1 is fixed to the operation portion a3 of the brake mechanism 42, and the other end side is fixed to the outer peripheral surface of the winding body a2 disposed outside the guide rail 20.
Thus, according to the embodiment shown in FIG. 6, after the string-like member a1 is housed in the guide rail 20, the winding body a2 that is a relatively large part is disposed outside the guide rail 20, It can prevent that the guide rail 20 dimension enlarges.

  7 and 8, the pulley member a7 is rotatably supported in the connecting member 11b, and the winding body a8 is supported on an immovable portion on the opening direction side of the pulley member a7. The rotation of the pulley member a7 is suppressed by the movement of the plate 13 in the opening direction, and the brake mechanism 42 is operated in the braking state by the tension generated in the string-like member a1.

The pulley member a <b> 7 is disposed on the end side in the opening / closing body width direction of the connection member 11 b so as to be positioned in the guide rail 20 and is rotatably supported.
More specifically, as shown in FIGS. 8A and 8B, the pulley member a7 is rotatably supported in the connecting member 11b via a bracket or the like, and its outer peripheral surface is in the opening direction. The rotation is suppressed by sliding contact with the movable seat plate 13 'when moved.

  Further, when the movable seat plate 13 ′ moves in the opening direction relative to the connection member 11b, the movable seat plate 13 ′ has an internal shape that comes into sliding contact with the outer peripheral surface of the pulley member a7. According to the illustrated example, the movable seat plate 13 ′ contacts the pulley member a7. It has a plurality of projections 13a, 13a that can contact.

  The winding body a8 is configured in substantially the same manner as the above-described winding body a2, and is pivotally supported by the storage case 31 that is a stationary part and is urged in the winding rotation direction by an urging member (not shown).

One end side of the string-like member a1 is guided to the pulley member a5 above the guide rail 20 and fixed to the operation portion a3, and the other end side is inserted into the connecting member 11b to the lower half portion of the pulley member a7. It is wound around, and is again inserted upward with respect to the connecting member 11b and is fixed to the outer peripheral surface of the winding body a8.
The string-like member a1 has a shape in which the surface of the string-like member a1 and the outer peripheral surface of the pulley member a7 are engaged with each other (or a meshing shape, a fitting shape, etc.) so that the string-like member a1 does not slip with respect to the pulley member a7. It is preferable that

Thus, according to the embodiment shown in FIGS. 7 and 8, the movable seat plate 13 is relative to the opening / closing body main body 11 and the connection member 11 b such that the closing direction end of the opening / closing body 10 abuts against the obstacle X. Then, when it moves in the opening direction, the pulley member a7 is restrained from rotating by sliding contact with the movable seat plate 13, tension is generated in the string-like member a1, and the operating portion a3 of the brake mechanism 42 is braked by the tension. It swings in the operation direction (left direction in FIG. 8).
Therefore, the brake mechanism 42 changes from the released state to the braking state, and the closing operation of the opening / closing body 10 is stopped.

  In addition, when the movable seat plate 13 moves relatively in the closing direction, for example, when the obstacle X is removed, the movable seat plate 13 is separated from the pulley member a7, so that the movable seat plate 13 is rotatable. Therefore, the string-like member a1 is loosened, and the operation portion a3 is swung in the releasing operation direction by the urging force of the urging member 53 in the automatic closing device 50 (from the (c) state shown in FIG. 4 to the (b) state). The brake mechanism 42 is released from the braking state, and the closing operation of the opening / closing body 10 is resumed.

Next, another example of the automatic closing device for releasing the brake mechanism 42 will be described.
The automatic closing device 60 shown in FIG. 9 projects in the casing 51 fixed to the casing 43 of the switch 40 so that one end side protrudes in the direction of the operating portion a3 and slides along the swinging direction of the operating portion a3. The supported pressing operation member 62, the urging member 63 for urging the pressing operation member 62 in the direction of the operation portion a3, and the pressing operation member 62 are engaged with and disengaged from the plunger 54a at a position separated from the operation portion a3 by a predetermined amount. The electromagnetic engagement / disengagement device 54 and damper means 64 for reducing the moving speed of the pressing operation member 62 in the direction of the operation portion a3 are provided.

The pressing operation member 62 has one end projecting in the direction of the operation portion a3 and the other end of the string-like member a1 on the opening / closing body opening direction side. The pressing operation member 62 is supported so as to slide along the swinging direction of the operation portion a3, and is urged toward the operation portion a3 by an urging member 63 that is a tension spring. Locked by the device 54.
The damper means 64 is a well-known damper device having a piston 64b that can be moved forward and backward in a cylinder 64a fixed to the casing 51. The damper 64 is given a resistance by gas pressure or liquid pressure to move the piston 64b. The resistance is set to be larger when moving backward than when moving forward (when moving in the left direction in the figure).
The piston 64b is preferably connected to the pressing member 62 or biased in the forward direction so as to follow the operation of the pressing member 62.

Thus, according to the automatic closing device 60 shown in FIG. 9, as in the automatic closing device 50 described above, when the electromagnetic engagement / disengagement device 54 is released, the pressing operation member 62 is urged. The brake mechanism 42 is released from the restrained state by the swinging of the operation portion a3 by projecting by the urging force 63 and coming into contact with the operation portion a3 (see FIGS. 9A and 9B).
The release operation at this time is performed at a relatively slow speed because it receives the resistance of the damper means 64.

Further, when the movable seat 13 is relatively moved in the opening direction due to contact with the obstacle X or the like and tension is generated in the string-like member a1 due to the movement, the state shown in FIG. As shown, the operation portion a3 is pulled by the string-like member a1, and the brake mechanism 42 is changed from the released state to the restricted state, and the closing operation of the opening / closing body 10 is stopped.
The restraining operation at this time is relatively quick because it receives almost no resistance from the structure of the damper means 64.

Thereafter, for example, when the movable seat 13 is moved again in the closing direction due to the removal of the obstacle X or the like, the pressing operation member 62 presses the operation portion a3 again by the urging force of the urging member 63, and the operation portion a3. Swings and the brake mechanism 42 is released from the restrained state. That is, the state shown in FIG. 9C is changed to the state shown in FIG.
The release operation at this time is performed at a relatively slow speed because it receives the resistance of the damper means 64.
Therefore, the restart of the closing operation of the opening / closing body 10 can be delayed, and as a result, the safety of the automatic return operation can be improved.

The damper means 64 only needs to give resistance to one-way movement of the pressing operation member 62 in the direction of the operation portion a3. For example, the damper means 64 is replaced with the damper means 65 of the automatic closing device 60 ′ shown in FIG. can do.
The damper means 65 is a known one-way type rotary damper device. That is, the damper means 65 includes a pinion portion 62a that is pivotally supported by the pressing operation member 62 and rotates, and a rack portion 62b that is fixed to the casing 51 so as to mesh with the pinion portion 62a. Directional rotation is constrained by the resistance of the internal fluid. According to the illustrated example, the clockwise rotation of the pinion portion 62a is suppressed.

  Thus, according to the automatic closing device 60 ′, the operation from the (a) state to the (b) state in FIG. 10 and the operation from the (c) state to the (b) state in FIG. The release operation of 42 can be performed at a moderate speed, and as a result, the safety of the automatic return operation can be improved.

In addition, according to the said embodiment, description about the electric release operation | movement of the brake mechanism 42 is abbreviate | omitted, However, You may make it cancel | release the brake mechanism 42 by supplying with electricity to the electromagnetic solenoid 42d as needed. Good.
For example, when closing the opening / closing body 10 for crime prevention purposes or maintenance, the electromagnetic solenoid 42d may be energized in accordance with a signal from an operation switch (not shown) to release the brake mechanism 42. .

In addition, according to the above embodiment, the brake mechanism 42 that is in a restrained state at a normal time and is released when an external operation is performed is provided. A brake mechanism (not shown) that is constrained when operated may be further provided, and may be externally operated by the tension of the string-like member a1.
This configuration may be a structure (not shown) such that the brake chute and the brake drum abut only when externally operated by the tension of the string-like member. The brake mechanism 42 and the automatic closing device 50 may be replaced with a DC motor connected to the output shaft 41b, and the input terminal of the DC motor may be short-circuited by the tension of the string-like member a1.
According to the latter brake mechanism, when tension is generated in the string-like member a1 due to the relative rise of the movable seat plate 13, the input terminal of the DC motor is short-circuited by the tension, and the DC motor is in a restrained state. Therefore, the rotation of the winding shaft 32 interlocked with the output shaft 41b is suppressed, and the closing operation of the opening / closing body 10 is also suppressed.

Further, in the automatic closing device 50, a brake mechanism (not shown) using the DC motor and the brake mechanism 42 (see FIG. 3) described above can be provided in series with the output shaft 41b. It is.
According to this aspect, when there is a disaster prevention signal, the opening / closing body 10 is automatically closed by energizing the electromagnetic solenoid 42d. When the obstacle X comes into contact with the movable seat plate 13 during the automatic closing, the string-like member a1 is tensioned by the relative rise of the movable seat plate 13, and the DC motor is short-circuited by the tension. . Therefore, the output shaft 41 b is restrained, and a braking force is applied to the closing operation of the opening / closing body 10.

  Moreover, according to the said embodiment, although the interlocking means A was set as the structure along one guide rail 20, this interlocking means A can also be set as the some structure along the left and right guide rails 20 and 20. FIG. . Similarly, a plurality of brake mechanisms for braking the closing operation of the opening / closing body 10 can be provided at any location.

  In addition, each aspect in the embodiment described above is configured so that the connecting member 11b and the winding body a2 or the movable seat plate 13 and the pulley member a7 are brought into contact with each other in order to suppress the winding body a2 or the pulley member a7. Although it is configured to be in contact with each other, as another example, it is possible to have a shape that engages with each other at the time of contact (or a shape that engages or a shape that fits). That is, the rotation of the winding body a2 or the pulley member a7 may be suppressed by the engagement of the connecting member 11b and the winding body a2, or the movable seat plate 13 and the pulley member a7.

  Moreover, in the said embodiment, the rotor 41a, the stator, etc. of the motor part 41 are excluded from the opening / closing machine 40 (the output shaft 41b is not omitted), and the opening / closing body 10 is manually opened and closed by its own weight. It is also possible.

  Moreover, according to the said embodiment, although it has set as the structure which transmits mechanically that the movable seat board 13 (or 13 ') moved to the open direction, as another example, it is a contact type or a connection type in the connection member 11b. A non-contact type switch is provided, and the switch is operated by raising the movable seat 13 (or 13 '), and the obstacle X is sensed according to the output signal of the switch to perform the control operation. An apparatus may be provided side by side. Further, in such a configuration, the string-like member a1 is a conductor (specifically, an electric wire or the like), and the output signal of the switch is electrically connected to a control unit (not shown) via the string-like member a1 that is a conductor. You may make it transmit.

DESCRIPTION OF SYMBOLS 1: Opening / closing device 10: Opening / closing body 11: Opening / closing body main body 12: Connection member 13: Movable seat 42: Brake mechanism 50, 60, 60 ': Automatic closing device A: Interlocking means a1: String-like member a2, a8: Winding Body a3: Operation part a4: Tensile spring a5, a6, a7: Pulley member

Claims (7)

An opening / closing body main body that can be closed while sliding, a movable seat plate that is connected to an end portion in the closing direction of the opening / closing body main body and is movable in an opening direction relative to the opening / closing body main body, and an operation unit are moved. A brake mechanism that brakes or releases the closing operation of the opening / closing body main body, and an automatic closing device that closes the opening / closing body body when receiving a signal, relative to the opening / closing body body. An opening and closing device that mechanically interlocks with the movement of the movable seat plate in the opening direction to change the brake mechanism from a released state to a braked state,
The brake mechanism is configured to change from a release state to a braking state by movement of the operation unit in one direction, and to move from the braking state to a release state by movement of the operation unit in a reverse direction.
The automatic closing device includes a pressing operation member that is slidable in both directions, and damper means, and in conjunction with movement of the movable seat plate facing the opening / closing body body in the opening direction, The operating portion is slid in one direction, the operating portion is braked by the pressing operation member, and the pressing operation member is slid in the reverse direction in conjunction with the movement of the movable seat plate relative to the opening / closing body in the closing direction. The operation portion is configured to be released by the pressing operation member,
The damper means hardly gives resistance to sliding of the pressing operation member in the one direction, but gives resistance to sliding of the pressing operation member in the reverse direction so that the pressing operation member moves in the reverse direction. An opening and closing device configured to reduce the moving speed of the door. The automatic closing device includes: a pressing operation member having one end projecting toward the operation unit; a biasing member that biases the pressing operation member toward the operation unit; and operating the pressing operation member. An electromagnetic engagement / disengagement device that engages / disengages at a position away from the unit by a predetermined amount,
The electromagnetic engagement / disengagement device engages a plunger with the pressing operation member, and when power is supplied, retracts the plunger by electromagnetic force of an electromagnetic solenoid to release the engagement with the pressing operation member, and The opening / closing apparatus according to claim 1, wherein the operating member is slid in the reverse direction, and the operating portion is pressed and released by the pressing operating member.   By moving the movable seat plate in the opening direction relative to the opening / closing body main body, tension is generated in the string-like member, and the operation unit is moved by the tension to change the brake mechanism from the release state to the braking state. The switchgear according to claim 1 or 2, wherein the switchgear is configured as described above. The winding body is supported between the opening / closing body main body and the movable member so as to be biased in the winding rotation direction by the biasing member, and one end side of the string-like member is fixed to the pressing operation member. And the other end side is wound around the winding body,
When the movable seat plate moves in the opening direction relative to the opening / closing body main body, the winding body is brought into contact with either or both of the opening / closing body main body and the movable seat plate, 4. The switchgear according to claim 3, wherein the winding member is prevented from rotating and tension is generated in the string-like member. A pulley member is rotatably supported between the opening / closing body main body and the movable member,
Supporting the winding body so as to be urged in the winding rotation direction by the urging member on the immovable portion on the opening direction side of the pulley member,
The one end side of the string-like member is fixed to the pressing operation member, and the other end side is wound around the lower half side of the pulley member and wound around the winding body,
When the movable seat plate moves in the opening direction relative to the opening / closing body main body, the pulley member is brought into contact with one or both of the opening / closing body main body and the movable seat plate, and the pulley member 4. The opening / closing device according to claim 3, wherein a rotation of the string-like member is suppressed and a tension is generated in the string-like member.   The damper means includes a piston capable of moving forward and backward in the cylinder, and by giving resistance to the piston, the movement resistance of the piston becomes larger when moving in the reverse direction than when moving in the one direction. The switchgear according to any one of claims 1 to 5, wherein the opening and closing device is configured as described above, wherein the piston is connected to the pressing operation member.   The damper means is a one-way type rotary damper device, and includes a pinion portion that rotates while being pivotally supported by the pressing operation member, and a rack portion that meshes with the pinion portion, and the rotation of the pinion portion in one direction is suppressed. The switchgear according to any one of claims 1 to 5, wherein the switchgear is provided.

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