JP2014031656A - Opening and closing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten a flexible long-sized member for mechanically conducting contact with an obstacle to a necessary minimum to improve responsiveness when sensing obstacles.SOLUTION: An opening and closing device is so configured that a brake mechanism 42 is actuated from a release state to a brake state by change in tension of a flexible long-sized member a when tension variable means is actuated. The tension variable means is arranged at a position shifted from just under the brake mechanism 42 in a transverse width direction on a lower end side of an opening and closing device body 11, and the flexible long-sized member a is approximately linearly guided from the tension variable means in an obliquely upward direction toward the brake mechanism 42.

Description

  The present invention relates to an opening / closing device that stops a closing operation of an opening / closing body that closes when the closing body contacts an obstacle on the closing direction side. The present invention relates to a switchgear that is mechanically transmitted using a wire or the like.

  Conventionally, in this kind of invention, as disclosed in Patent Document 1, an opening / closing body main body (shutter curtain 1) capable of closing operation and a lower end side of the opening / closing body main body are connected to the opening / closing body main body. A movable seat plate (movable portion 70B) that can be moved upward relative to each other, and a lintel (lintel 16) that is disposed on both sides in the thickness direction of the opening / closing body main body and passes the opening / closing body main body in the closing direction. And a brake mechanism (brake means 19) capable of braking the closing operation of the open / close body, and a flexible long member (lock wire 36 and control wires 111 to 113) provided to extend in the open / close direction. And a tension variable means (mechanical coupling device 39) for changing the tension of the flexible long member by raising the movable seat plate relative to the opening / closing body main body, and when the tension variable means is operated The flexible long part of There is was actuate the braking state the brake mechanism from the release state by the tension change switchgear.

By the way, the brake mechanism is often arranged on the end side in the axial direction of the winding shaft because it is provided in an opening / closing device that rotationally drives the winding shaft. On the other hand, the tension varying means (mechanical coupling device 39) is provided in the width direction of the opening / closing body (for example, the opening / closing body) with respect to the position just below the brake mechanism for the purpose of avoiding the decoration of the building, etc. There is a case where it is shifted to the center).
Therefore, in the prior art, as described above, when the shift mechanism is arranged so as to be shifted from directly below the brake mechanism in the opening / closing body width direction, a flexible long member extending right above the tension varying means is installed in the pulley in the shutter case. In general, the direction is changed in the width direction of the opening / closing body through the like and guided to the brake mechanism.

However, in the prior art, the flexible elongate member becomes longer than necessary, and accordingly, the occurrence of elongation of the flexible elongate member increases or the direction in which the flexible elongate member is guided is increased. Needs a converting roller, a rotating member, etc., and as a result, the responsiveness at the time of obstacle detection decreases due to the extension of the flexible long member, the transmission loss of force at the time of direction change, etc. There is a risk.
In addition, when an opening / closing device including a guide rail that rotates in accordance with an opening / closing operation (see, for example, Patent Document 2) includes the above-described mechanical obstacle sensing structure, when the guide rail rotates, There is a possibility of interfering with the flexible long member and hindering the obstacle sensing performance.

JP 2010-59775 A Japanese Patent Laid-Open No. 2005-188026

  This invention makes it an example of a subject to cope with the said conventional situation. That is, the purpose of the present invention is to shorten the length of the flexible long member for mechanically transmitting the contact with the obstacle to the minimum necessary, improve the response at the time of obstacle detection, etc. is there.

  One means for solving the above problems is an opening / closing body main body that can be closed downward while sliding, and a movable body that is connected to the lower end side of the opening / closing body main body and can move upward relative to the opening / closing body main body. A seat plate, a brake mechanism capable of braking the closing operation of the opening / closing body main body, a flexible long member provided so as to extend in the opening / closing direction along the opening / closing body main body, and the opening / closing body main body Tension variable means for changing the tension of the flexible long member by raising the movable seat plate, and the brake mechanism is controlled by the tension change of the flexible long member when the tension variable means is operated. An opening / closing device configured to operate from a release state to a braking state, wherein the tension varying means is disposed at a position shifted in a lateral direction from directly below the brake mechanism on a lower end side of the opening / closing body body, Long member Characterized in that to guide substantially linearly from said tension varying means obliquely upward is the brake mechanism side.

  Since the present invention is configured as described above, the flexible elongate member for mechanically transmitting the contact with the obstacle is shortened to the minimum necessary, and the response at the time of obstacle sensing. It is possible to solve problems such as improving the performance.

It is a front view which shows an example of the switchgear concerning this invention. It is a principal part longitudinal cross-sectional view of the switchgear. It is a perspective view which shows an example of a tension variable means. It is principal part sectional drawing of the tension variable means, (a) shows the state in which the opening-and-closing body is closing operation, (b) shows the state in which the opening-and-closing body contact | abutted the obstruction. It is a perspective view which shows an example of an engagement rotation member. It is a principal part structure figure which shows an example of an opening / closing machine and an automatic closing apparatus. It is a schematic diagram which shows the action | operation state of a brake mechanism and an automatic closing device, (a) shows the normal state corresponding to the full open stop state of an opening-closing body, (b) is a brake mechanism releasing operation by the action | operation of an automatic closing device. (C) shows the state in which the brake mechanism is braked by the tension acting on the flexible long member. It is a front view which shows typically the principal part of the switchgear, and shows the state in which the opening-closing body is closing operation. It is a front view which shows typically the principal part of the switchgear, and shows the state which the opening / closing body contact | abutted the obstruction and the engagement rotation member rotated to the middle. It is a front view which shows typically the principal part of the opening / closing apparatus, and shows the state which the opening / closing body contact | abutted the obstruction and the engagement rotation member fully rotated. It is a front view which shows the other examples of the switchgear concerning this invention. It is a front view which shows the other examples of the switchgear concerning this invention. It is a front view which shows the other examples of the switchgear concerning this invention.

In order to implement the present invention, in the first embodiment, the opening / closing body main body that can be closed downward while sliding, and connected to the lower end side of the opening / closing body main body and movable upward relative to the opening / closing body main body A movable seat plate, a brake mechanism capable of braking the closing operation of the opening / closing body main body, a flexible long member provided to extend in the opening / closing direction along the opening / closing body main body, and the opening / closing body main body Tension changing means for changing the tension of the flexible long member by raising the opposing movable seat plate, and the brake according to the tension change of the flexible long member when the tension changing means is operated. An opening / closing device configured to operate the mechanism from a release state to a braking state, wherein the tension varying means is disposed at a position shifted in a lateral direction from directly below the brake mechanism on a lower end side of the opening / closing body body, Flexible long section Were to be guided substantially linearly from said tension varying means obliquely upward is the brake mechanism side.
According to this configuration, the flexible long member can be guided obliquely from the tension varying means to the brake mechanism at a relatively short distance, and as a result, the total length of the flexible long member can be relatively short. It is possible to improve the operability of the flexible long member by reducing the elongation of the flexible long member and the transmission loss at the time of changing the direction, thereby improving the responsiveness when detecting the obstacle. be able to.

In the second embodiment, a movable member that is movable relative to the opening / closing body main body is provided, and the flexible long member is disposed so as to avoid a movement range of the movable member.
According to this structure, it can prevent that a flexible elongate member interferes with a movable member, and the operativity of this flexible elongate member falls.
Here, the movable member may be a member that moves relative to the opening / closing body main body, and the movable member rotates and moves along the surface of the opening / closing body along with the opening / closing operation of the opening / closing body main body. Movable guide rail that expands and contracts, door member provided so as to partially open and close the closed open / close body, and movable along the open / close body main surface to lock the closed open / close body Includes a locking bar.

In a third embodiment, as a specific structure for changing the tension of the flexible long member by raising the movable seat plate, the tension varying means is configured to wind up the lower end side of the flexible long member. A winding body that is rotatably supported by the opening / closing body main body and biased in the winding direction, and an engagement portion that engages with the winding body and brakes the rotation of the winding body, The engaging portion is engaged with the winding body by raising the movable seat plate facing the opening / closing body main body, thereby increasing the tension of the flexible long member.
In this form, more preferably, the tension of the flexible long member is increased by fitting the engagement portion to the winding body in a concavo-convex shape and braking the winding body.
More preferably, an engaged rotating body having a concave portion and / or a convex portion to be fitted to the engaging portion on the outer peripheral portion and provided coaxially and integrally with the winding body, and a rotation to the opening / closing body main body. An engagement rotation member that is supported so as to be movable and has the engagement portion around a rotation center portion thereof.
More preferably, the engaging rotation member rotates in a direction opposite to a rotation direction of the engaged rotating body that rotates as the winding body rotates, and is engaged with the engaged rotating body. It is provided as follows.
More preferably, a pressure receiving portion that receives the ascending force of the movable seat plate is provided on the opposite side of the engagement portion across the rotation fulcrum portion of the engagement rotation member, and the pressure receiving portion is configured to be the movable seat plate. With the rotation of the engaging rotation member due to the rise of the pressure, the pressure receiving position is formed so as to approach the rotation fulcrum portion.

In addition, the above-described part of the embodiments can be an independent invention that does not include a part of the configuration of the embodiment described above.
That is, one of the independent inventions is an open / close body that can be closed while sliding, and a movable body that is connected to the lower end side of the open / close body and can move upward relative to the open / close body. A seat plate, a brake mechanism capable of braking the closing operation of the opening / closing body main body, a flexible long member provided so as to extend in the opening / closing direction along the opening / closing body main body, and the opening / closing body main body Tension variable means for changing the tension of the flexible long member by raising the movable seat plate, and the brake mechanism is controlled by the tension change of the flexible long member when the tension variable means is operated. An opening / closing device that is operated from a release state to a braking state, wherein a movable member that is movable relative to the opening / closing body body is provided, and the flexible elongated member has a movable range of the movable member. Avoid being arranged And features.
According to this invention, it can prevent that a flexible elongate member interferes with a movable member, and the operativity of this flexible elongate member falls.

In the present specification, the “opening / closing body thickness direction” means the thickness direction of the opening / closing body in the closed state.
In the present 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 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 opening / closing device 1 described below is disposed in or inside an opening portion or inside of a housing such as a house, building, warehouse, factory, underground mall, tunnel, or vehicle loading platform, and opens and closes the opening portion or opens a space inside the housing. The present invention can be applied as a shutter device that partitions and opens, and as a particularly preferable aspect, it is an example applied to a fire prevention shutter device that is automatically closed in an emergency such as a fire to prevent the spread of flames and smoke.

  As shown in FIG. 1, the opening / closing device 1 surrounds an opening / closing body 10 that can be closed by its own weight by sliding an end portion in the closing direction, and an opening / closing body that surrounds an end of the opening / closing body 10 in the width direction (left-right direction in FIG. 1). A guide rail 20 that guides in the direction and a winding device 30 that winds and unwinds the opening / closing body 10, and when the opening / closing body 10 during the closing operation comes into contact with the obstacle X, a mechanical mechanism The opening / closing body 10 is configured to stop the closing operation.

  The opening / closing body 10 includes an opening / closing body main body 11 and a movable seat plate 12 connected to the lower end side of the opening / closing body main body 11 and movable in the vertical direction relative to the opening / closing body main body 11. On the side, a tension variable means for changing the tension of the flexible elongate member a by raising the movable seat plate 12 facing the opening / closing body main body 11 is configured.

  The opening / closing body main body 11 is formed by connecting 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. 11 is provided with a frame-shaped recess 11b that opens continuously in the width direction of the opening / closing body (see FIGS. 3 and 4). And in this recessed part 11b, the rocking | swiveling member 13 (refer FIG. 4) is provided in the state which supported the rocking | fluctuation fulcrum part at the one end side of the opening-closing body thickness direction, and the rocking | swiveling member 13 in the recessed part 11b is provided. On the lower side, a long movable seat plate 12 extending in the opening / closing body width direction is engaged so as to slide in the vertical direction.

The swing member 13 is rotatably supported on the inner wall of the opening / closing body main body 11 so as to be pressed by the movable seat plate 12 to swing in the opening / closing body opening direction and to swing in the opening / closing body closing direction by its own weight. (See FIG. 4).
The swing member 13 is provided over substantially the entire length in the opening / closing body width direction so as to contact the movable seat plate 12 at any position in the opening / closing body width direction.

A pressing member 18 that engages with a winding body 15 to be described later and brakes the winding body 15 is fixed to the upper surface on the distal end side of the swing member 13 (see FIG. 4). According to the illustrated example, the pressing member 18 is a member having a substantially V-shaped longitudinal section, and is a long length extending in the opening / closing body width direction so as to press the swing end side of the engaging rotation member 63 from below. It is formed in a shape. The pressing member 18 pushes the engaging rotation member 63 by the swinging of the swinging member 13 as the movable seat plate 12 is raised, and the swinging member 13 is swung in the reverse direction when the movable seat plate 12 is lowered. It moves away from the engaging rotation member 63 by the movement.
As another example, the pressing member 18 may be omitted, and the engaging rotation member 63 may be pushed directly by the distal end side of the swinging member 13.

The engagement rotation member 63 has a rotation center portion 63a that is rotatably supported in the recess 11b on the lower end side of the opening / closing body main body 11. The engagement rotation member 63 is engaged on one end side around the rotation center portion 63a. It has the engaging part 63b which engages with the outer peripheral part of the rotary body 17 (refer FIG. 5).
The engaging portion 63b is composed of a plurality of (two in the illustrated example) upward first and second protrusions 63b1 and 63b2 formed so as to engage with the recesses on the outer periphery of the engaged rotating body 17. The first protrusion 63b1 is a protrusion that first engages with the outer peripheral portion of the engaged rotating body 17, protrudes slightly larger than the second protrusion 63b2, and has a large width.
The engaging rotation member 63 rotates in the same direction with respect to the rotation direction (clockwise according to FIG. 8) of the engaged rotating body 17 that rotates as the winding body 15 rotates. The protrusions 63b1 and the second protrusions 63b2 are disposed so as to be fitted to the engaged rotating body 17, and more specifically, as shown in FIG. Thus, the flexible long member a is disposed near the feeding portion.

Further, the ascending force of the movable seat plate 12 is received via the swinging member 13 and the pressing member 18 on the opposite side of the engaging portion 63b across the turning center portion 63a of the engaging turning member 63. First and second pressure receiving portions 63c and 63d (see FIG. 5) are provided. The first and second pressure receiving portions 63c and 63d are formed so that the pressure receiving position approaches the rotation fulcrum portion 63a as the engaging rotation member 63 rotates due to the rising of the movable seat plate 12. ing.
More specifically, the first pressure receiving portion 63c is formed in a protruding shape protruding downward on the most reverse end side of the engaging portion 63b across the rotation center portion 63a, and when the ascended It is first contacted by the pressing member 18.
The second pressure receiving portion 63d is disposed on the opposite end side of the engaging portion 63b across the rotation center portion 63a and closer to the rotation center portion 63a than the first pressure receiving portion 63c. It slightly protrudes downward, and is brought into contact with the rear side of the first pressure receiving portion 63c by the pressing member 18 when it is raised.

Further, on the lower end side of the opening / closing body main body 11 configured as described above, a winding body 15 is provided in which the inner member a <b> 2 of the flexible long member a is wound at a position shifted in the lateral width direction from directly below the brake mechanism 42. .
If it demonstrates in detail, as shown in FIG. 3, the notch part 11b1 connected to the exterior is provided in the part near the one end of the opening-closing body thickness direction above the recessed part 11b. The winding body 15 is disposed so that its lower portion is inserted into the cutout portion 11b1, and is rotatably supported by a cover member 16 that covers the periphery thereof.

  The winding body 15 includes a substantially cylindrical winding tube portion 15a that winds and unwinds the first flexible long member a1, and a spring that biases the winding tube portion 15a in the winding direction. (Not shown).

  The cover member 16 is a substantially box-shaped member that covers the winding body 15. The cover member 16 is detachably fastened to the lower end side of the opening / closing body main body 11, and the inner member a <b> 2 fed out from the winding body 15 is inserted obliquely upward. ing.

  An engaged rotating body 17 is integrally fixed to the winding body 15 configured as described above. The engaged rotating body 17 is a disk-shaped member that is disposed on one end side in the axial direction of the winding cylinder portion 15a in the winding body 15, and is provided coaxially and integrally with the winding cylinder portion 15a. The outer peripheral portion is formed in a substantially gear shape that fits in an uneven shape with the engaging portion 63 b of the engaging rotation member 63.

The flexible long member a is for increasing the tension by the upward movement of the movable seat plate 12 and for braking the brake mechanism 42 by the tension.
This flexible elongate member a is inserted into the outer side of the flexible tube-like outer member a1 and the outer member a1 so as to move in the longitudinal direction, and both ends are projected from the outer member a1. It comprises a flexible inner member a2, and the lower end side of the outer member a1 is inserted into the collar portion 31a1 of the lintel portion 31 and fastened.

The outer member a1 is inserted through the inner member a2 so as to be slidable in the axial direction. The end of the outer member a1 on the opening / closing body side is fixedly fixed to the collar portion 31a1 of the lintel portion 31 in a vertical manner via the connection member a11.
A portion of the outer member a1 above the connecting member a11 is guided to the brake mechanism 42 (automatic closing device 50) side through the outside of the lintels 31 without passing through the lintels 31. The upper end portion of the outer member a1 is fixedly fixed to the casing 51 of the automatic closing device 50 in a stationary manner.

The inner member a2 is a metal wire formed by bringing a number of metal wires together.
The lower end side of the inner member a2 is fastened to the outer peripheral portion of the take-up cylinder portion 15a of the take-up body 15 constituting the tension varying means. The inner member a2 is guided in a substantially straight line from the outer peripheral portion of the winding tube portion 15a to the diagonally upper side (leftwardly upward in accordance with FIG. 1) on the brake mechanism 42 side, and outside the lintel portion 31 outside. The member a1 is inserted into the member a1, and the upper end side thereof is fixed to the advance / retreat member 52 of the automatic closing device 50 (see FIG. 6).
More specifically, as shown in FIG. 1, the tension varying means is located at one end side (right end side in the drawing) in the lateral width direction on the lower end side of the opening / closing body 10 and relatively close to one guide rail 20. The lower end portion of the inner member a2 is fixed to the outer peripheral portion of the take-up cylinder portion 15a of the tension varying means.
In addition, the connecting member a11 at the lower end of the outer member a1 is disposed at a position relatively close to the other guide rail 20 on the other end side (the left end side in the drawing) in the lateral width direction of the collar portion 31a1 of the lintel portion 31. The upper end side of the inner member a2 guided obliquely upward is inserted through the connection member a11.

  The guide rail 20 is a substantially U-shaped member that surrounds the widthwise end of the opening / closing body 10, and a seating target site P (for example, a floor surface, the ground, a frame member, etc.) seated by the opening / closing body 10. It arrange | positions over between the winding apparatuses 30 (refer FIG. 1).

  The winding device 30 is provided on both sides in the thickness direction of the opening / closing body 10 and has a lintel portion 31 that allows the opening / closing body 10 to pass in the opening / closing direction, and a winding shaft 32 that winds and unwinds the opening / closing body 10, An opening / closing device 40 that rotates and brakes the winding shaft 32 through a power transmission means 33 such as a chain and a sprocket, and the opening / closing body 10 is closed by its own weight by releasing the brake. And an automatic closing device 50 (see FIG. 2).

The lintel portion 31 is continuously provided on the lower side of the winding shaft 32 so as to cover substantially the entire length in the width direction of the opening / closing body 10, and at a stationary part (an installation object of the opening / closing device 1, a support rod 31 c, etc.). It is fixed. The lintel part 31 is close to the opening / closing body 10 and the guide rail 20 from both sides in the opening / closing body thickness direction, and has an insertion part 31a for inserting the opening / closing body 10 and the guide rail 20 in the vertical direction. At the lower end of 31a, flanges 31a1 and 31a1 are formed so as to protrude toward the side opposite to the opening / closing body in the opening / closing body thickness direction.
Each collar part 31a1 protrudes substantially horizontally from the lower end of the lintel part 31 to the anti-opening / closing body side, and is formed in a substantially concave shape in cross section with the protruding end bent upward.
And in the height position of the lower end vicinity of the lintel part 31, the edge part of the ceiling member Q is mounted and fixed to the upper end of the collar part 31a1 bent upward as mentioned above. The ceiling member Q is provided with an inspection port q that can be opened and closed as necessary.
Of the flange portions 31a1 and 31a1 on both sides, one flange portion 31a1 on the automatic closing device 50 side is formed with a vertical through hole, and the lower end of the outer member a1 of the flexible long member a is formed in the through hole. The connecting member a11 is attached.
The outer member a1 and the inner member a2 inserted into the outer member a1 are automatically closed from the collar portion 31a1 so as to pass outside the lintel portion 31 and above the inspection port q of the ceiling member Q. Guided to device 50.

The connection member a11 is a substantially cylindrical member having a male screw portion on the outer peripheral surface, and is connected to the lower end side of the outer member a1. The connecting member a11 is inserted into the collar portion 31a1 of the lintel portion 31, and nuts (a double nut on the lower side and a single nut on the upper side according to an example of FIG. 2) are tightened from both sides. Fixed.
The connecting member a11 can move in the vertical direction with respect to the flange 31a1 by loosening the nut. Therefore, if the vertical position of the connecting member a11 is adjusted, the tension of the inner member a2 can be adjusted. For example, if the connecting member a11 is moved upward and fixed, the outer member a1 of the flexible long member a becomes longer on the upper side than the flange portion 31a1, so that the tension of the inner member a2 is increased. be able to. Such adjustment is effective when the tension of the inner member a2 is reduced due to elongation or the like.

  In addition, in FIG. 2, the code | symbol 31c is the elongate support rod continuous over the opening-and-closing body width direction. The support rod 31c is fixed to the lower end of a base frame 32a described later, and fixes the upper end side of the lintel portion 31 across the opening / closing body width direction. Further, reference numeral 39 in FIG. 2 denotes a shutter case that is close to the half portion side of the opening / closing body 10 wound around the outer periphery of the winding shaft 32 and covers the half portion side.

  The winding shaft 32 is a shaft-like or cylindrical member that is rotatably supported via a base frame 32a with respect to a stationary part (for example, a casing that is an installation target of the opening / closing device 1).

Moreover, the opening / closing machine 40 is supported by the base frame 32a via the bracket 40a (refer FIG. 2). This switch 40 is formed by providing an exposed operating body 44 to a switch having a known structure disclosed in, for example, Japanese Utility Model Laid-Open No. 01-118084. FIG. 6 is a cross-sectional view of a main part of the opening / closing device 40 and an internal structure diagram of the automatic closing device 50.
More specifically, the opening / closing machine 40 is rotated by the motor unit 41 on one end side (right end side in the illustrated example) of the motor unit 41 as a power source of the winding shaft 32. A brake mechanism 42 for braking is provided in the casing 43.

The motor unit 41 is a direct current motor or an alternating current motor, and transmits the rotational force of the drive shaft 41b integral with the rotor 41a to the take-up shaft 32 via the power transmission means 33 (see FIG. 1).
As another example, when it is used only by its own weight or manual opening / closing, a brake mechanism 42 (and a manual driving mechanism or the like) that omits the motor unit 41 from the opening / closing machine 40 and brakes the rotation of the drive shaft 41b. It is good also as a structure mainly made up of.

  The brake mechanism 42 is pushed in one direction (rightward according to FIG. 6) against the biasing force of the biasing member 42c (coil spring according to the illustrated example). The braking state is such that the drive shaft 41b is non-rotatably restricted, and the release state is such that the drive shaft 41b is freely released. FIG. 6 shows a braking state.

  The automatic closing device 50 has a forward position (position shown in FIG. 7B) in which the operating body 44 is pushed in a casing 51 fixed to the opening / closing device 40 and a return position (FIG. 7) retracted to the original initial state. (A position shown in (a)), an advancing / retreating member 52 that can advance / retreat, a biasing member 53 (a tension spring according to the illustrated example) that biases the advancing / retreating member 52 in the forward direction, and the above-mentioned when retracted An engagement / disengagement device 54 that locks the advance / retreat member 52 at the return position and releases the locked state in response to a closing command, and a manual return member 55 (for example, manually returns the advance / retreat member 52 to the return position when it moves forward). A string-like body or a rod-like body).

The gap s in FIG. 7A is provided in order to prevent the advance / retreat member 52 that has moved forward from being pushed by the operating body 44 and returned to the return position and locked.
A manual return member 55 and an inner member a <b> 2 of the flexible long member a are connected to the rear end side of the advance / retreat member 52.

  The engagement / disengagement device 54 engages the plunger 54a urged by the urging force of an internal urging member (not shown) with the advance / retreat member 52, and retracts the plunger 54a by the electromagnetic force of the electromagnetic solenoid to advance / retreat. This is a device for releasing the locking of the member 52.

According to the automatic closing device 50 configured as described above, when an electrical closing command (disaster prevention signal or the like) is received at the initial position (return position) shown in FIG. As shown in FIG. 7B, the locked state by the plunger 54 a is released, and the advance / retreat member 52 moves forward by the urging force of the urging member 53 and becomes the advance position where the operation unit 44 is pressed.
Further, when the manual return member 55 is pulled rearward (leftward according to FIG. 7) by the manual operation at the advance position, the return position where the advance / retreat member 52 is locked by the engagement / disengagement device 54 (see FIG. Return to 7 (a).

  And the inner side member a2 of the flexible elongate member a is connected to the rear end side of the advance / retreat member 52 in the automatic closing device 50 so as to pull the advance / retreat member 52 backward when tension is generated.

Next, the characteristic operation of the switchgear 1 having the above-described configuration will be described in detail.
First, in a normal state without a disaster prevention signal, the brake mechanism 42 is maintained in a braking state by an urging force of a coil spring 42c (see FIG. 7), and the opening / closing body 10 is stationary in a fully opened state.

When the opening / closing device 1 in the fully open state receives a disaster prevention signal, the engagement / disengagement device 54 of the automatic closing device 50 is excited by an electrical signal from a control unit (not shown), and the locked state of the advance / retreat member 52 is released. (See FIGS. 7A and 7B).
Then, the advance / retreat member 52 of the automatic closing device 50 moves forward by the urging force of the urging member 53, swings the operating body 44, and brakes the brake mechanism 42 of the switch 40 (see FIG. 7A). To the release state (see FIG. 7B).

Therefore, the drive shaft 41b is in a freely rotatable state inside the switch 40.
For this reason, the take-up shaft 32 interlocked with the drive shaft 41b via the power transmission means 33 is also in a freely rotatable state.
Therefore, the opening / closing body 10 that is wound around the winding shaft 32 and is in a 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 first flexible long member a1. Is fed out from the winding body 15 on the lower end side of the opening / closing body main body 11 (see FIG. 8).

  When the movable seat plate 12 comes into contact with the obstacle X during the weight drop of the open / close body 10 (see FIGS. 4A and 8), the movable seat plate 12 rises relative to the open / close body main body 11. (See FIG. 9). Then, the swinging end side of the swinging member 13 is pressed by the movable seat plate 12 and swings upward, and the pressing member 18 on the swinging end side presses and rotates the engagement rotating member 63.

  First, the engaging rotation member 63 starts to rotate slowly with a relatively high torque by being pushed by the first pressure receiving portion 63c far from the rotation center portion 63a as an action point, and the engaged rotating body The first protrusion 63b1 closer to 17 meshes with the recess on the outer periphery of the engaged rotating body 17 (see FIG. 9).

Next, when the second pressure receiving portion 63d is pressed from the pressing member 18, the engaging rotation member 63 rotates at a high speed with a relatively low torque, and the second protrusion 63b2 is moved to the engaged rotating body. 17 is engaged with a recess on the outer periphery, and the engaged rotating body 17 and the winding body 15 are slightly rotated in the winding direction (counterclockwise direction in the drawing) (see FIG. 10).
In this state, the winding body 15 and the engaged rotating body 17 are substantially restrained from rotating. Therefore, the inner member a22 in the first flexible elongate member a1 and the second flexible elongate member a2 has a slight rotation in the winding direction of the engaged rotating body 17 and the opening / closing body main body. 11, the tension is generated, the brake mechanism 42 is brought into a braking state by this tension, and the closing operation of the opening / closing body 10 is stopped.

  Thus, according to the above configuration, the engaging rotating member 63 and the engaged rotating body 17 can be engaged deeply stepwise, and the engaged rotating body 17 can be engaged during the engagement. Since the winding body 15 is slightly rotated in the winding direction, it is easy to ensure a relatively large tension of the flexible long member a.

When the obstacle X is removed from below the opening / closing body 10, the movable seat plate 12 moves downward relative to the opening / closing body main body 11 by its own weight, so that the swing member 13 and the pressing member 18 are moved downward. Accordingly, the engagement portion 63b of the engagement rotation member 63 is rotated in the reverse direction so as to be disengaged from the engaged rotation body 17, so that the restrained state with respect to the winding body 15 is released, and the winding The first flexible elongate member a1 is drawn out from the collecting body 15. That is, the state shown in FIGS. 4B and 10 returns to the state shown in FIGS.
Therefore, the brake mechanism 42 is again released from the braking state, and the closing operation of the opening / closing body 10 is automatically restarted.

According to the opening / closing device 1 configured as described above, since the flexible long member a is not inserted into the lintel portion 31, the pulling direction of the flexible long member a is converted into the lintel portion 31. Therefore, it is not necessary to secure an installation space for a roller and a rotating member to be performed, and the lintel portion 31 can be reduced in size.
In addition, since the flexible long member a is passed through the outside of the lintel portion 31 and above the ceiling member Q that can be opened and closed, the flexible elongate member a is flexible when the opening / closing device 1 is installed. The operation | work which mounts the property long member a can be performed easily.
In addition, when maintenance or the like is performed, if the inspection port q of the ceiling member Q is opened, the flexible long member a can be easily visually observed, and the flexible long member a can be replaced or adjusted in tension. Can be easily performed.

  Further, even when a decorative object or other object of the installation target (building or the like) of the opening / closing device 1 exists below the automatic closing device 50, the position of the tension varying means is directly below the automatic closing device 50. Therefore, the tension varying means can be prevented from interfering with the decorative body and other objects. In addition, since the flexible elongate member a is guided obliquely upward, for example, the elongate flexible member a is guided in the horizontal width direction, and then the direction is changed by a roller, a rotating member, etc. The total length of the flexible elongate member a can be shortened compared to the structure made, and further, due to the elongation of the flexible elongate member a, transmission loss of force at the time of direction change, etc. It is possible to prevent a decrease in responsiveness when an obstacle is sensed.

  In addition, in the said opening / closing apparatus 1, although the fastening location of the outer member a1 both ends was made into the lintel part 31 side and the automatic closing device 50 side, the fastening location may be increased suitably, for example, outer member a1. You may make it fix the middle part of the longitudinal direction to the lower end side etc. of the base frame 32a.

Moreover, the switchgear 1 having the above-described configuration can appropriately replace a part of the configuration with another mode. Next, these will be described in detail.
In addition, since the switchgear shown below changes a part of the switchgear 1 described above, only the changed part is mainly described in detail, and a detailed description thereof is omitted.

  The opening / closing device 2 shown in FIG. 11 replaces the opening / closing device 1 with one of the left and right fixed guide rails 20 and 20 replaced by a movable guide rail 60 (movable member) and a tension varying means (winding device). Body 15 etc.) and the flexible long member a are arranged avoiding the movement range of the movable guide rail 60.

One end side of the movable guide rail 60 is rotatably supported by a stationary part such as the lintel 31, and the other end is rotatably supported by a central portion of the lower end side of the opening / closing body 10 in the lateral width direction. As the body 10 opens and closes, it rotates in a substantially fan shape.
That is, when the opening / closing body 10 is fully opened, the movable guide rail 60 is accommodated in the winding device 30 substantially parallel to the winding shaft 32. Then, with the closing operation of the opening / closing body 10, the other end side of the movable guide rail 60 rotates downward in a fan shape. When the opening / closing body 10 is substantially fully closed, the movable guide rail 60 is substantially upright with the lower end fitted into the seating target portion P, and engages with the end of the opening / closing body 10 in the lateral width direction. When the opening / closing body 10 is opened, an operation opposite to that described above is performed.

  Further, the opening / closing device 3 shown in FIG. 12 replaces one of the left and right fixed guide rails 20 and 20 with a movable guide rail 70 (movable member) with respect to the opening / closing device 1, and tension changing means ( The winding body 15 and the like and the flexible long member a are arranged so as to avoid the movement range of the movable guide rail 70.

The movable guide rail 70 is formed by connecting a plurality (two in the illustrated example) of bowl-shaped movable guide bodies 71 and 72 so as to freely rotate between the adjacent movable guide bodies 71 and 72. The upper end side of one movable guide body 71 is rotatably supported at one end side in the lateral width direction at a stationary part such as the lintel portion 31 or the like. The lower end side of the other movable guide body 72 is rotatably supported on the one end side (left end side in the illustrated example) in the lateral width direction on the lower end side of the opening / closing body 10. The plurality of movable guide bodies 71 and 72 expand and contract in a pantograph shape as the opening and closing body 10 opens and closes.
That is, when the opening and closing body 10 is fully opened, the plurality of movable guide bodies 71 and 72 are accommodated on the lower end side in the winding device 30 so as to overlap substantially horizontally. When the opening / closing body 10 is closed, both the movable guide bodies 71 and 72 are rotated downward so as to widen the angle therebetween. When the opening / closing body 10 is substantially fully closed, the movable guide rail 70 fits the lower end portion of the lower movable guide body 72 to the seating target site P and is substantially upright, and the end of the opening / closing body 10 in the lateral width direction. Engage with. When the opening / closing body 10 is opened, an operation opposite to that described above is performed.

  Therefore, according to the opening / closing device 2 (or 3) configured as described above, the flexible long member a interferes with the movable guide rail 60 (or 70), and the operability of the flexible long member a is reduced. Can be prevented.

  Further, the opening / closing device 4 shown in FIG. 13 is provided with a passage opening 11b in the opening / closing body 11 with respect to the opening / closing device 1, and the passage opening 11b is closed by a door member 80 (movable member) that can be opened and closed. (Winding body 15 etc.) and the flexible elongate member a are arranged avoiding the movement range of the door member 80.

The passage opening 11 b is a substantially rectangular through hole formed on the lower side of the opening / closing body main body 11.
The door member 80 is formed in a substantially rectangular shape from a flexible sheet-like member, and has an upper end portion fixed to the opening / closing body main body 11 and a lower end side as a free end portion, and is approached and separated from the passage port 11b. It can swing and open and close.
The flexible long member a is provided in a substantially linear shape in an inclined state above the door member 80 so as to avoid the swing range of the door member 80.

  Therefore, according to the opening / closing device 4 configured as described above, the flexible long member a is prevented from interfering with the door member 80 that opens and closes, and the operability of the flexible long member a is reduced. be able to.

  In addition, in the said Example, although the flexible elongate member a is made into the member which continues in a length direction, as another example, the several member divided | segmented into the length direction is connected, and the said flexible length. It is also possible to constitute the scale member a.

  Moreover, in the said Example, although the ceiling member Q was provided in the height position near the lower end of the lintel part 31, as another example, it is substantially horizontal below the height position near the lower end of the lintel part 31. The ceiling member Q is arranged so as to extend in the direction so that the lower end of the lintel portion 31 is located above the ceiling member Q, and the upper side above the ceiling member Q is a wide space with better serviceability and the like. Is possible.

  Moreover, in the said Example, although the advance / retreat member 52 of the automatic closing device 50 was pulled by the tension | tensile_strength of the inner member a2 of the flexible elongate member a, the brake mechanism 42 was made into the braking state, Further, it is also possible to adopt a configuration in which the operating mechanism 44 is directly pulled by the tension of the inner member a2 to bring the brake mechanism 42 into a braking state. Further, the brake mechanism 42 may be changed from the released state to the braked state by a change in tension when the flexible long member a is loosened.

  Moreover, in the said Example, although the inner member a2 of the flexible elongate member a was made into a metal wire, these elongate members should just be an elongate member which has flexibility, As another example, Can be a band, chain, string, or the like. Furthermore, as another example, it is possible to use a conductive material and have a function as an electric wire.

  Moreover, according to the said Example, although the shutter curtain formed by connecting several slats as an example of the opening / closing body 10 was shown, as another example of this opening / closing body 10, a single or several panel, sheet form, etc. were shown. It is good also as an aspect formed by arrange | positioning a thing and a net-like thing in an opening-and-closing direction, or an aspect which combines a slat, a panel, a pipe, a sheet-like thing, a net-like thing etc. suitably.

  The brake mechanism 42 may be a mechanism that brakes the closing operation of the opening / closing body 10 by a change in tension of the inner member a2 of the flexible long member a. As another example, the brake mechanism 42 is operated by the tension of the inner member a2. Thus, a mechanism for engaging and braking a friction member (such as a brake pad) or a locking claw with the opening / closing body main body 11, the winding shaft 32, or the like can be used.

  Moreover, according to the said Example, although it was set as the aspect which winds up or unwinds the opening / closing body 10 with the upper winding shaft 32, as another example, it accommodates upwards without winding up the opening / closing body 10. It is also possible to adopt a mode of extending from above (for example, an overhead door or the like).

  In addition, according to the above embodiment, the engaged rotating body 17 is configured integrally with the winding body 15, but the engaged rotating body 17 may be configured to rotate integrally with the winding body 15. What is necessary is just to be able to make it the structure provided integrally with the rotating shaft of the winding body 15, for example, the structure which rotates integrally with the winding body 15 via a gearwheel etc.

  Moreover, according to the said Example, it was set as the structure which meshes | engages the engagement rotation member 63 with the outer peripheral part of the to-be-engaged rotary body 17, and brakes the winding body 15, but as an example, engagement rotation It is also possible to adopt a structure in which the member is slidably brought into contact with the winding body 15 or the engaged rotating body 17 to brake the winding body 15.

  Further, according to the above embodiment, the engagement rotating member 63 is provided with the two pressure receiving portions, that is, the first pressure receiving portion 63c and the second pressure receiving portion 63d. As the engagement rotation member rotates, the pressure receiving position only needs to be formed so as to approach the rotation fulcrum portion. As another example of the pressure receiving portion, the pressure receiving position is moved to the rotation fulcrum portion side. It is also possible to adopt an aspect composed of three or more protrusions formed in such a manner, an aspect composed of a single protrusion curvedly formed so as to continuously move the pressure receiving position toward the rotation fulcrum side, and the like.

  Moreover, according to the said Example, the winding body 15 which winds up the lower end side of the flexible elongate member a was provided in the lower end side of the opening / closing body 10 as an example of the said tension variable means, Although the flexible seat member 12 is restrained by raising the movable seat plate 12 to generate tension on the flexible elongate member a, another example of the tension varying means is a brake mechanism 42 on the lower end side of the opening / closing body 10. A pulley member that guides the upper portion of the flexible long member a guided downward is provided, and a flexible member guided upward by the pulley member is provided at an immovable portion above the opening / closing body 10. A winding body may be provided so as to wind up the length member a, and the pulley member may be restrained by raising the movable seat plate 12 to generate tension in the flexible long member a.

  Further, according to the above embodiment, as a particularly preferable aspect, the flexible long member a is guided in a substantially straight line from the tension varying means obliquely upward on the brake mechanism 42 side. The effect of inserting and supporting the elongate member a through the collar portion 31a1 of the lintel portion 31 is the structure in which the flexible elongate member a is guided directly from the tension varying means (not shown). Can also be obtained.

  Moreover, according to the said Example, as a particularly preferable aspect, while inserting and supporting the flexible elongate member a to the collar part 31a1 of the lintel part 31, this flexible elongate member a is a lintel part. 31 is guided to the brake mechanism 42 side without passing through the inside 31, but the effect of the fact that the flexible long member a is guided substantially linearly upward from the tension varying means to the brake mechanism 42 side is as follows. Further, it is possible to obtain the flexible long member a by a structure (not shown) inserted into the lintel portion 31 without being inserted into and supported by the collar portion 31a1.

1, 2, 3, 4: Opening / closing device 10: Opening / closing body 11: Opening / closing body main body 12: Movable seat 15: Winding body 20: Guide rail 30: Winding device 31: Tail portion 31a1: Gutter portion 32: Winding Shaft 40: Opening / closing machine 42: Brake mechanism 50: Automatic closing device 60, 70: Movable guide rail (movable member)
80: Door member (movable member) a: Flexible long member a1: Outer member a2: Inner member P: Seating target part Ceiling member Q
X: Obstacle

Claims (3)

Opening / closing body main body that can be closed downward while sliding, a movable seat plate that is connected to the lower end side of the opening / closing body main body and can move upward relative to the opening / closing body main body, and closing operation of the opening / closing body main body A brake mechanism capable of braking the opening and closing body, a flexible long member provided so as to extend in the opening and closing direction along the opening and closing body body, and the flexible seat plate by raising the movable seat plate facing the opening and closing body body Tension changing means for changing the tension of the long member, and the brake mechanism is operated from the release state to the braking state by a change in tension of the flexible long member when the tension changing means is operated. A switchgear,
The tension varying means is disposed at a position shifted in the lateral width direction from directly below the brake mechanism on the lower end side of the opening / closing body main body, and the flexible elongated member is located on the brake mechanism side from the tension varying means. An opening and closing device characterized in that it is guided in a substantially straight line obliquely upward.   The movable member that is movable relative to the opening / closing body main body is provided, and the flexible long member is disposed so as to avoid a movement range of the movable member. Switchgear.   The tension variable means is rotatably supported by the opening / closing body main body so as to wind up the lower end side of the flexible long member, and is wound in the winding direction, and the winding body And an engagement portion that brakes the rotation of the winding body, and the engagement portion is engaged with the winding body by raising the movable seat plate facing the opening / closing body main body. The switchgear according to claim 1 or 2, wherein the switch is configured to increase the tension of the flexible long member.

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