JP2020051160A - Shutter device - Google Patents

Abstract

To more stably operate an automatic closing device by a manual closing device regardless of the structure of a building.SOLUTION: A manual closing device 7 includes an operation part 70 and a wire W connecting the operation part 70 and an automatic closing device 6, a wire housing part 9 housing the wire W is provided adjacently to one guide rail 3 over the height direction, an upper part of the wire housing part 9 communicates with a housing space of an opening/closing machine 5 and the automatic closing device 6, the wire W extends in the height direction in the wire housing part 9, and the operation part 70 is provided on a surface part of the wire housing part 9.SELECTED DRAWING: Figure 11

Description

The present invention relates to a shutter device, and more particularly, to a shutter device having a manual closing device.

In a so-called smoke prevention shutter, an automatic closing device is operated by input of a fire detection signal to release a brake of a switch to lower a shutter curtain by its own weight, thereby forming a fire prevention section or a smoke prevention section. Such a smokeproof shutter is configured such that the shutter curtain can be lowered by its own weight even by manual operation. Specifically, by connecting the automatic closing device and the manual closing device with a wire, and pressing the emergency button of the manual closing device to release the movement restriction of the wire, the automatic closing device is activated and the brake of the switchgear is released. To lower the shutter curtain under its own weight.

Conventionally, such a manual closing device is mounted on a wall of a building, and thus requires piping for passing a wire. Also, depending on the structure of the building, the number of bending times of the wire may be large, or the bending radius of the wire may be small (the bending angle is sharp), and the wire moves in the outer cable. There is a possibility that the movement of the wire becomes poor due to friction or the like, and the operation of the automatic closing device by the manual closing device is not performed promptly.

Patent Literature 1 discloses a smoke shutter having a manual closing device, but the manual closing device is provided in a wall. Patent Document 2 discloses a fire prevention shutter device including an emergency closing switch. The emergency closing switch is an electric emergency closing switch that inputs an emergency closing signal to a control unit, and is connected via a wire. It does not mechanically activate the automatic closing device.
JP 2004-299804 A Patent No. 5534773

An object of the present invention is to stably operate an automatic closing device using a manual closing device regardless of the structure of a building.

The technical means adopted by the present invention to solve such a problem are as follows:
With shutter curtains,
Left and right guide rails that receive and guide both ends of the shutter curtain in the width direction,
Switchgear,
An automatic closing device that releases the brake of the switchgear and lowers the shutter curtain by its own weight,
A manual closing device that manually activates an automatic closing device to lower the shutter curtain by its own weight;
With
The manual closing device includes an operation unit, a wire connecting the operation unit and the automatic closing device, and is configured to mechanically operate the automatic closing device via the wire by operation of the operation unit,
A wire accommodating portion for accommodating the wire is provided in a height direction adjacent to one of the guide rails, and an upper portion of the wire accommodating portion communicates with a storage space of the switchgear and the automatic closing device. The wire extends in the height direction in the wire housing portion, the operation portion is provided on a surface portion of the wire housing portion,
Shutter device.

In one aspect, the lower end of the wire housing extends to the floor.
In one aspect, the wire accommodating portion includes a finding surface that is flush with a finding surface of the one guide rail, and a look surface that faces away from a look surface outside the one guide rail. The wire is housed in a space surrounded by the outside surface of the one guide rail, the outside surface of the wire accommodating portion, and the outside surface.
The wire housing may be integral with or separate from the guide rail. In the case of being integrated with the guide rail, a partition or the like is provided in the guide rail internal space to form a wire accommodating portion in order to prevent interference between the wire and the end of the shutter curtain.

In one aspect, the operation unit includes a pressing unit that releases the brake via a wire, and a lever that returns the brake via the wire,
The pressing portion and the lever are arranged on a surface of the wire housing portion in a vertical direction.
In one aspect, the pressing portion and the lever are arranged side by side in a vertical direction on a finding surface of the wire housing portion.
By arranging the pressing portion and the lever in a line vertically, the operating portion of the manual closing device can be built in compactly even when the width of the wire accommodating portion is narrow.
In one aspect, the movement of the wire urged in the brake release direction is released by pressing the pressing portion, and the wire is turned downward against the urging force in the brake release direction by rotating the lever. In the movement-restricted state.
In one aspect, the found surface of the wire accommodating portion is narrow, and the found width of the wire accommodating portion is smaller than the found width of the one guide rail.
The operation unit may be provided on a prospective surface of the wire storage unit.
In one aspect, the pressing portion includes a pressing plate having an area larger than an opening formed in a surface portion of the wire housing portion,
The pressing plate is movable from the opening toward the inside of the wire housing, and is urged from the inside toward the opening,
In the non-pressed state, the pressing plate closes the opening from the inside by the peripheral edge of the pressing plate abutting on the back surface (peripheral edge of the opening) of the surface of the wire housing portion.
In an embodiment described later, a front plate is provided on the finding surface of the wire housing portion, and the “opening formed in the surface portion of the wire housing portion” is an opening formed in the front plate.

In one aspect, the automatic closing device is located near the switchgear;
The wire is wrapped around the peripheral surface of the switchgear in the storage space and connected to the automatic closing device.
In one aspect, the automatic closing device is located below the switchgear.
In one aspect, the wire is connected to the automatic closing device from the front of the automatic closing device (a direction orthogonal to the opening width direction).
In one embodiment, the wire extends from the rear side of the switch through the upper side, extends downward through the front side, and is connected to the automatic closing device from the front side.

In one aspect, the switchgear and the automatic closing device are located above and outside the one guide rail.
That is, the one side portion in the width direction of the shutter case is an extension portion extending outward beyond the opening width, and the opening / closing device and the automatic closing device are stored in a storage space of the extension portion.

In one aspect, the storage space is partitioned into a first space and a second space by a mount of the switchgear, and the first space is located above the wire storage unit, The switchgear and the automatic closing device are located in the space, an opening is formed in the mount, and the wire extends from the first space to the second space through the opening.
In an embodiment to be described later, an opening is formed in the mounting base of the switchgear at a position on the back side and below.
In addition, the position of the opening formed in the mounting base of the switchgear is not limited, and the position of the opening may change depending on the posture of the automatic closing device connected to the switchgear, the connection direction of the wire to the automatic closing device, and the like.

  According to the present invention, the manual closing device is incorporated in the wire receiving portion provided adjacent to the guide rail, so that the wire extends in the wire receiving portion. Therefore, it is not necessary to provide a pipe for passing the wire in the wall. Regardless of the structure of the building, the way in which the wire passes (the number of bends and the bend radius) is determined uniformly, so that the movement of the wire due to friction between the wire and the outer cable is prevented as much as possible and stable. Brake release operation can be performed.

  A wire extending substantially vertically upward from the manual closing device is wrapped around the peripheral surface of the switch in the storage space and connected to the automatic closing device so that the bending radius of the wire in the storage space can be adjusted. As a result, the brake release operation can be performed more stably.

It is a front view of the shutter device concerning this embodiment. It is a side view of the shutter device concerning this embodiment. FIG. 3 is a partially omitted horizontal cross-sectional view of the shutter device according to the embodiment. (A) is a top view of the guide rail and the wire housing, (B) is a side view of the wire housing viewed from the side of the wire housing, and (C) is a view of the wire housing in FIG. It is a figure which shows the notch part of a prospect surface by inking. It is a longitudinal section showing the upper part of the shutter device concerning this embodiment. 3A and 3B show a perspective view of a shutter case with a case division part removed and a perspective view of a case division part. (A) is a front view showing the inside of the shutter case, and (B) is a bottom view showing the inside of the shutter case. (A) is a view showing the internal structure of the automatic closing device, (B) is a view of FIG. 8 (A) viewed from the right side (wires are omitted), and (C) is a view of FIG. 8 (A) viewed from below. It is a figure (wire is omitted). (A) is a front view of the operation unit of the manual closing device, (B) is a side view showing the inside of the operation unit, and (C) is a view of the operation unit viewed from below. (A) shows the manual closing device at the brake release position (state in which the lever is tilted), and (B) shows the manual closing device (state in which the lever is rotated downward) at the brake return position. (A) is a partial front view of a shutter device showing an arrangement mode of wires of the manual closing device, and (B) is a partial side view of the shutter device showing an arrangement mode of wires of the manual closing device. It is the elements on larger scale of FIG.11 (B).

FIG. 1 is a front view of the shutter device according to the present embodiment, FIG. 2 is a side view of the shutter device, and FIG. 3 is a partially omitted cross-sectional view of the shutter device. The shutter device according to the present embodiment is installed in a frame C provided with a three-way frame (consisting of side frames E2, E3, and an upper frame E4) in front of an entrance E1 of an elevator. At the time of occurrence, the space in front of the entrance E1 of the elevator is closed.

The shutter device includes a sheet-shaped shutter curtain 1, left and right guide rails 2 and 3 for receiving and guiding both ends in the width direction of the shutter curtain 1, a winding body 4 on which the shutter curtain 1 is wound, and a winding body. A switchgear 5 that is connected to the body 4 so as to be able to transmit rotational force, and an automatic closing device 6 that lowers the shutter curtain 1 that is in the fully open position by its own weight in an emergency such as a fire. The automatic closing device 6 operates in response to the input of the fire detection signal to lower the shutter curtain 1 in the fully open position by its own weight and close the space in front of the entrance E1 of the elevator when a fire occurs. The shutter curtain 1 in the fully open position can be lowered by its own weight by manual operation from the manual closing device 7. The manual closing device 7 includes an operation unit 70 and a wire W that connects the operation unit 70 and the automatic closing device 6, and operates the automatic closing device 6 via the wire W by operating the operation unit 70. The shutter curtain 1 is lowered by its own weight. The shutter device includes a take-up body 4, a shutter curtain 1 wound around the take-up body 4, a switch 5, and a shutter case 8 that houses an automatic closing device 6.

The shutter curtain 1 is made of a fire-resistant sheet. More specifically, the shutter curtain 1 is made of a screen made of a heat-resistant glass cloth having fire prevention performance and smoke prevention performance. At both ends in the width direction of the shutter curtain 1, a retaining member 10 is provided, and at a lower end, a seat plate 11 is provided. When the shutter curtain 1 is in the fully open position, the shutter curtain 1 is in its own weight lowering restricted state by restricting the rotation of the winding body 4 by a brake built in the switch 5, and the automatic closing device 6 operates the switch 5. Is released, the shutter curtain 1 descends with the weight of the seat plate 11 and assumes a fully closed position. When the shutter curtain 1 attempts to expand due to a pressure difference between the inside and outside of the shutter curtain 1 at the time of its own weight drop or after the shutter curtain 1 is completely closed, the retaining member 10 prevents the width end of the shutter curtain 1 from coming off. You.

As shown in FIG. 1, the guide rail 2 is a long member extending in the height direction, and is provided on the frame C (the front wall on the side of the side frame E2) in the height direction. As shown in FIG. 3, the guide rail 2 includes a first finding surface 20 at the front, a second finding surface 21 at the back, an outside estimation surface 22, and an inside estimation surface 23. A narrow guide groove 24 extending in the height direction is formed on the projection surface 23, and one end in the width direction of the shutter curtain 1 from the guide groove 24 is received in the internal space of the guide rail 2. A fixing member 25 having a U-shape in cross section is provided on the second finding surface 21 of the guide rail 2, and a fixed member 26 having a U-shape in cross section is provided on a front wall of the skeleton C, The guide rail 2 is attached to the skeleton C by fixing a rising piece of the fixing member 25 to a rising piece of the fixed member 26 with a screw.

As shown in FIG. 1, the guide rail 3 is a long member extending in the height direction, and is provided on the frame C (the front wall on the side of the side frame E3) in the height direction. As shown in FIG. 3, the guide rail 3 includes a first finding surface 30 at the front, a second finding surface 31 at the back, an outside expectation surface 32, and an inside expectation surface 33. A narrow guide groove 34 extending in the height direction is formed on the projection surface 33 of the shutter curtain 1, and one end in the width direction of the shutter curtain 1 is received from the guide groove 34 into the internal space of the guide rail 3. The second finding surface 31 of the guide rail 3 is provided with a fixing member 35 having an L-shaped cross section, and the front wall of the skeleton C is provided with a fixed member 36 having a U-shaped cross section. The rail 3 is attached to the frame C by fixing a rising piece of the fixing member 35 to a rising piece on one side in the width direction of the fixed member 36 with a screw.

A wire accommodating portion 9 is provided adjacent to the outside of the guide rail 3 in the height direction. In this embodiment, the wire housing 9 is formed by a frame 9 ′ provided adjacent to the guide rail 3 and extending in the height direction. The frame body 9 ′ is spaced apart from and faces a finding surface 90 which is flush with the finding surface 30 of the guide rail 3 and extends in the height direction adjacent to the finding surface 30, and a projection surface 32 outside the guide rail 3. And a prospect surface 91 extending in the height direction. The frame body 9 ′ has an inside projection surface 92 (the projection dimension is smaller than the projection surface 91) extending in the height direction adjacent to the projection surface 32 outside the guide rail 3, and the guide rail 3 and the frame body are provided. 9 'is integrated by connecting the outer prospect surface 32 and the inner prospect surface 92. An L-shaped connecting piece 910 is integrally formed on the base end side of the projection surface 91 of the frame body, and is fixed to the rising piece on the other side in the width direction of the fixed member 36, and thus is attached to the frame C. . The integrated guide rail 3 and frame 9 ′ are attached to the front wall of the skeleton C via the fixed member 36.

In the present embodiment, the wire accommodating portion 9 is formed of the frame 9 ′ and the projection surface 32 outside the guide rail 3, and the finding surface 90 and the projection surface 91 of the frame 9 ′ and the outside of the guide rail 3. The wire W is accommodated in a space that extends in the height direction and is surrounded by the projection surface 32. Since the internal space of the guide rail 3 and the wire storage space are separated by the projection surface 32 outside the guide rail, the wire W does not interfere with the end of the shutter curtain 1 in the width direction.
The configuration of the wire accommodating portion 9 is not limited to the illustrated embodiment. For example, in order to integrally form the wire accommodating portion and the guide rail 3 from one member and prevent interference between the wire and the shutter curtain end portion, A partition or the like may be provided in the guide rail internal space to form the wire accommodating portion.

In the present embodiment, the lower end of the frame 9 ′ reaches the floor surface FL, and the upper end extends together with the guide rail 3 into the shutter case 8. As shown in FIG. 4B, the upper edge 911 of the projection surface 91 of the wire accommodating portion 9 coincides with the upper edge 320 of the guide rail 3, but the upper end portion of the projection surface 91 is notched in a square shape. The cutout edge includes a vertical edge 912 and a lower edge 913 (see FIG. 4C). The wire W extending upward through the internal space of the wire housing 9 extends above the lower edge 913. An L-shaped member 321 in side view is connected to the upper end of the projection surface 32 outside the guide rail 3.

As shown in FIG. 2, the shutter case 8 is provided on the frame C (the front wall above the upper frame E4). The shutter case 8 accommodates the winder 4, the switch 5, the automatic closing device 6, and the shutter curtain 1 wound around the winder 4. As shown in FIG. 6, the shutter case 8 includes an upper surface 80, a front surface 81, a lower surface 82, side surfaces 83 and 84, and a rear surface 85. The upper surface 80 includes a horizontal surface 800 and an inclined surface 801.

In the present embodiment, one portion in the width direction of the shutter case 8 is an extended portion that extends outside beyond the opening width (see FIG. 1), and a transmission connection portion between the winding body 4 and the switch 5 and a switch. 5. The self-closing device 6 is located outside the opening (outside the upper one of the guide rails 3) and is accommodated in the extension, and includes at least the front surface 86 of the extension. Are configured to be detachable as a dividing portion 8 '. In the present embodiment, the dividing portion 8 'has an L shape in a side view including the front surface portion 86 and the lower surface portion 87 of the extending portion. In FIG. 6, the dividing portion 8' is removed from the shutter case 8. It shows a case body and a divided portion 8 '. As shown in FIG. 1, when viewed from the front, a vertical line L1 formed from the boundary between the finding surface 30 of the guide rail 3 and the finding surface 90 of the frame 9 ′, the front surface 81 of the case body, and the dividing portion 8 ′. The vertical line L2 formed from the boundary of the front surface portion 86 of FIG. 1 forms one vertical line as viewed from the front by continuing up and down, improving the design.

As shown in FIG. 7, the winding body 4 includes a winding drum 40 on which the shutter curtain 1 is wound, a fixed shaft 41 on one end of the winding drum 40, and a rotating shaft 42 on the other end of the winding drum 40. , A drive shaft 43 for transmitting rotation to the rotation shaft 42, a sprocket 44 provided at the tip of the drive shaft 43, the fixed shaft 41 is supported by a side plate 45, and the rotation shaft 42 and the drive shaft 43 are connected to a side plate 46. It is supported rotatably. The take-up drum 40 includes a take-up wheel and a coil spring (these are not shown), but since such a take-up body 4 is known to those skilled in the art, detailed description will be omitted. Further, the configuration and operation of the winding body 4 can refer to the description in Patent Document 1. The lower ends of the side plates 45 and 46 are supported by the inner lintel material 47, and the upper and rear ends of the side plates 45 and 46 are fixed to the inner surfaces of the upper surface 80 and the rear surface 85 of the shutter case 8.

The switchgear 5 is supported by the switchgear mounting base 50 in a take-out state. The lower end of the plate-like surface portion of the switchgear mounting base 50 is supported by the inner lintel material 47, and the upper end and the rear end of the surface portion are fixed to the inner surfaces of the upper surface 80 and the rear surface 85 of the shutter case 8. The switch 5 includes a casing 51 and an output shaft 52 protruding from the casing 51, and the output shaft 52 protrudes from a surface of the switch mount 50. The casing 51 has a peripheral surface. The casing 51 includes a motor for rotating the output shaft 52 and a brake for restricting the rotation of the output shaft 52.

A sprocket 53 is provided at the tip of the output shaft 52 of the switchgear 5. The sprocket 53 has a built-in clutch to which only rotation in one direction of the output shaft 52 is transmitted. The sprocket 44 and the sprocket 53 are connected by a roller chain coupling (not shown) so that rotation can be transmitted. That is, the drive shaft 43 of the winding body 4 and the output shaft 52 of the switchgear 5 are linearly connected via the transmission connection portion (sprocket 44, sprocket 53, roller chain coupling).

An automatic closing device 6 is provided below and adjacent to the switchgear 5. The automatic closing device 6 includes a first slider 60 that can reciprocate between a first position where the brake is effective and a second position where the brake is released, and the first slider 60 is normally moved in the brake release direction. In the first position in a state of being biased by The switch 5 is provided with a brake release lever (not shown). The brake release lever extends downward from the switch 5, projects into the case of the automatic closing device 6, and moves on the movement path of the first slider 60. To position. When the first slider 60 moves from the first position to the second position and presses the tip side of the brake release lever, the brake of the switch 5 is released. The brake release lever is biased in the direction in which the brake returns, and when the first slider 60 moves from the second position to the first position, the brake release lever moves in the brake return direction, and the brake of the switchgear 5 returns. I do.

Normally, the shoulder of the movement restricting body 61 is locked to the first slider 60, so that the first slider 60 is at the brake return position. A second slider 62 is provided on the movement restricting body 61, and one end of a wire W for a manual closing operation is fixed to the second slider 62. The wire W extends inside the outer cable W ′, and an end of the outer cable is fixed to an outer cable stopper 64 of the automatic closing device 6. The second slider 62 is urged in the brake release direction like the first slider 60. Since the other end of the wire W is fixed in an immovable state, the movement of the second slider 62 in the brake release direction is regulated by the wire W, and the first slider 62 that holds the first slider 60 at the first position. In position.

When a fire detection signal is input from a smoke detector (not shown) when a fire occurs, the solenoid 63 is energized and the movement restricting body 61 tilts, thereby locking the movement restricting body 61 and the first slider 60. The state is released, the movement restriction of the first slider 60 is released, and the first slider 60 moves to the brake release position, releases the brake of the switch 5 and lowers the shutter curtain 1 by its own weight. The operation of the automatic closing device 6 based on the input of the fire detection signal is performed independently of the manual closing device 7 and is not affected by the wire W.

The operating portion 70 of the manual closing device 7 includes a pressing portion (so-called emergency button) 71 for releasing the brake by releasing the immobilized state of a fixing element (a slider 74 described later) at the other end of the wire W, and a wire W Is provided with a lever 72 that pulls the lever downward to return the brake. In other words, the movement restriction of the wire W is released by the pressing of the pressing portion 71 of the operating portion 70, and the movement of the second slider 62 and the first slider 60 in the brake release direction by the urging force is permitted, thereby enabling the automatic closing device. 6 is configured to operate mechanically.

The operation unit 70 includes a front plate 700 provided so as to cover the notch opening of the finding surface 90, and a frame 701 formed on the back surface of the front plate 700. And the lever 72 are arranged side by side in the vertical direction, the pressing portion 71 is located below, and the lever 72 is located above. By arranging the pressing portion 71 and the lever 72 side by side in the up-down direction, the pressing portion 71 and the lever 72 can be exposed and provided on the finding surface 90 having a small finding width dimension in an operable state. The front plate 700 has a vertically rectangular opening for receiving the lever 72 on the upper side, and an opening 71 ′ for exposing the pressing portion 71 on the lower side. The front plate 700 has a front surface 7000 and a back surface 7001, and when the lever 72 is in the vertical position (storage position), the surface of the lever 72 and the front surface 7000 of the front plate 700 are flush. The pressing portion 71 includes a pressing plate 710. The pressing plate 710 has a surface portion having an area larger than that of the opening 71 ′. In normal (non-pressing) time, the coil spring 76 is attached to the back surface 7001 of the front plate 700. It is in the state pressed by. That is, in the non-pressed state, the peripheral edge of the front surface of the pressing plate 710 is in contact with the rear surface (the peripheral edge of the opening 71) 7001 of the front plate 700, and closes the opening 71 ′ from the inside. If the front surface of the pressing plate and the surface 7000 of the front plate 700 are flush with each other, a desired clearance should be provided between the pressing plate and the opening 71 'in order to press the pressing plate well in an emergency such as a fire. Will be provided. However, since the shutter device according to the present embodiment is a shutter device having smoke prevention performance and fire prevention performance, and has a configuration in which the operation unit 70 of the manual closing device 7 is provided in the wire housing unit 9, It is desirable to eliminate as much as possible a gap communicating between the inside and the outside of the wire housing 9. Therefore, in the present embodiment, when not pressed, the pressing plate 710 of the pressing portion 71 abuts the opening 71 ′ formed in the front plate 700 from the inside to close the opening 71 ′.

A frame 701 is provided on the back surface of the front plate 700 of the operation unit 70, and the components of the operation unit 70 are provided inside the frame 701 and the frame 701. These components will be described below with reference to FIGS.

A guide groove 73 extending in the height direction is formed on a side portion of the frame 701, and a slider 74 to which the other end of the wire W is fixed can move up and down along the guide groove 73. When the slider 74 is at the lower first position, the first position is held by the movement restricting body 75 being locked to the slider 74. That is, the slider 74 to which the other end of the wire W is fixed is in an immobile state, and the upward movement of the slider 74 and the other end of the wire W is restricted. When the slider 74 of the operation unit 70 is at the first position, the second slider 62 of the automatic closing device 6 is at the first position for holding the first slider 60 at the first position.

When the locked state of the slider 74 and the movement restricting body 75 is released and the upward movement restriction of the slider 74 is released, one end of the wire W is moved in the brake releasing direction by the urging means, and the automatic closing device is moved. The second slider 62 and the first slider 60 of No. 6 move in the brake release direction to reach the second position and the brake is released. At this time, the slider 74 of the operation unit 70 of the manual closing device 7 moves to the upper second position.

Thus, when the slider 74 is at the lower first position, the first slider 60 of the automatic closing device 6 holds the first position and the second slider 62 holds the first position of the first slider 60. When the slider 74 is in the second position, the automatic closing device 6 is in the brake release position (the first slider 60 and the second slider 62 are in the second position where the brakes are released). It is in.

The pressing body 71 and the movement restricting body 75 are connected via a shaft 76 on which a coil spring 760 is provided, and the movement restricting body 75 is moved by the pressing of the pressing body 71, so that the movement restricting body 75 and the slider 74 are engaged. The stop state is released. When the pressing of the pressing body 71 is released, the pressing body 71 and the regulating body 75 return to the original posture by the coil spring 760 (see FIG. 10A).

The lever 72 is rotatable around a rotation shaft 720 provided on a side portion of the frame 701, and an arm 77 is connected to the lever 72. One end of the arm 77 is connected to the lever 72 via a rotation shaft 770, and a roller 771 provided at the other end of the arm 77 is received in the guide groove 73 so as to be vertically movable.

In the state of FIG. 9B, the lever 72 is in the vertical position, the slider 74 is located at the lower end of the guide groove 73, and the lower part of the peripheral surface of the lever 72 is in contact with the peripheral surface of the slider 74. . At this time, the roller 771 at the upper end of the arm 77 is located at the upper end of the guide groove 73.

When the pressing portion 71 is pressed from this state, the locking between the restricting body 75 and the slider 74 is released, and the slider 74 moves upward and contacts the roller 771 at the upper end of the arm 77 from below. When the slider 74 moves upward, the peripheral surface of the slider 74 moves upward while contacting the peripheral surface of the lever 72, thereby tilting the lever 72 forward (FIG. 10A).

A projection 721 is provided above the lever 72, and a spring receiving member 78 for engaging the projection 721 is mounted above the frame 701. When the lever 72 is in the vertical position, the projection 721 is locked to the first portion on the back side of the spring receiving member 78. When the lever 72 is in the tilting position, the projection 721 is on the second portion on the front side of the spring receiving member 78. To be locked.

When the lever 72 in the tilting posture is rotated downward from the state of FIG. 10A, the roller 771 of the arm 77 pushes down the slider 74 and the guide groove 73 while interlocking with the downward rotation of the lever 72. Move down. When the slider 74 moves downward, the other end of the wire W is pulled downward, and one end of the wire W is fixed to the second slider 62 fixed to the second slider 62. Numeral 60 moves from the second position to the first position against the urging force, and the brake of the switch 5 is returned. When the slider 74 moves to the lower first position, the slider 74 is locked to the restricting body 75, and the immovable state of the slider 74 is maintained (FIG. 10B). Then, the lever 72 is rotated upward to be in the vertical position, so that the lever 72 is stored in the original position (see FIG. 9B).

The wire W connected to the slider 74 is surrounded by the internal space of the wire accommodating portion 9, specifically, the sighting surface 90 and the sighting surface 91 of the frame 9 ′, and the sighting surface 32 outside the guide rail 3. And extends substantially vertically upward through the space. That is, the wire W extends vertically from the operation unit 70 of the manual closing device 7 to a position above the wire storage unit 9 (located in the shutter case 8) with zero bending.

The wire W extending upward through the internal space of the wire housing 9 extends above the lower edge 913 of the upper portion of the prospective surface 91 and into the storage space of the extension portion of the shutter case 8. In the storage space, a switch 5 and an automatic closing device 6 are provided adjacent to below the switch 5, and a wire W is connected to the automatic closing device 6.

In the present embodiment, as shown in FIG. 11A, the storage space of the extended portion of the shutter case 8 is opened and closed by the mounting table 50 of the switch 5 with the first space S1 located above the wire housing 9. Machine 5 and a second space S2 in which the automatic closing device 6 is located. An opening 500 is formed in the mounting table 50 of the switchgear 5 at the back side and below, and the first space S1 and the second space S2 communicate with each other through the opening 500 formed in the mounting table 50. , The wire W extends from the first space S1 to the second space S2 through the opening 500. The wire W extending upward through the internal space of the wire accommodating portion 9 passes through the upper side of the lower edge 913 and penetrates the opening 500 of the mounting base 50 at a gentle angle, and extends obliquely. The radius is made as large as possible.

The wire W extending to the second space S2 through the opening 500 of the mounting base 50 of the switchgear 5 makes a large spiral around the peripheral surface of the casing 51 of the switchgear 5 in the second space S2, and is automatically closed. It is connected to the device 6. More specifically, the wire W extending to the second space S2 passes upward from the rear side of the switchgear 5, extends downward through the front side, and is connected to the automatic closing device 6 from the front side. More specifically, the wire W extends upward through the space between the rear side of the casing 51 of the switchgear 5 and the rear surface 85 of the shutter case 8, and extends between the upper side of the casing 51 and the upper surface 80 of the shutter case 8. , And extends below the shutter case 8 through a space between the front side of the casing 51 and the front surface of the shutter case 8 (the front surface 86 of the divided portion 8 '). The automatic closing device 8 is connected to the lower end of the switchgear 5 in a posture in which the posture in FIG. 8C is turned upside down, and the outer cable stopper 64 faces the front. At this time, the X direction of the automatic closing device 6 matches the opening width direction, and the Y direction matches the depth direction (front-back direction) of the shutter case 8.

In the present embodiment, the wire W extends in the wire housing 9 by incorporating the manual closing device 7 in the wire housing 9 provided adjacent to the guide rail 3, so that the pipe through which the wire passes is formed by a wall. It is not necessary to provide the inside of the wire W, and the way of passing the wire W (the number of bends and the bending radius of the wire W) is uniformly determined regardless of the structure of the building. The wire W extending substantially vertically upward from the operation unit 70 of the manual closing device 7 extends at a gentle angle from the first space S1 to the second space S2, and is formed on the peripheral surface of the casing 51 of the switch 5 in the second space S2. And is connected to the automatic closing device 6 from the front side, so that the bending radius of the wire W in the second space S2 can be made as large as possible.

More specifically, the wire W, one end of which is fixed to the second slider 62 of the automatic closing device 6 and the other end of which is fixed to the slider 74 of the manual closing device 7, A first portion extending vertically to the upper portion, a second portion extending from the first portion to the first space S1 and extending obliquely to the second space S2 through the opening 500 of the mounting base 50 of the switchgear 5; In the second space S2, a third portion spirally extends once around the peripheral surface of the casing 51 of the switchgear 5, and the third portion is fixed to the second slider 62 of the automatic closing device 6.

In the present embodiment, the wire W extends in the wire housing 9 by incorporating the manual closing device 7 in the wire housing 9 provided adjacent to the guide rail 3, so that the pipe through which the wire passes is formed by a wall. It is not necessary to provide the inside of the wire W and the way of passing the wire W (the number of bends and the bend radius of the wire W) is uniformly determined regardless of the structure of the building. Can be prevented as much as possible, and a stable brake release operation can be performed. A wire W extending substantially vertically upward from the manual closing device 7 circulates along the peripheral surface of the casing 51 of the switchgear 5 in the storage space and is connected to the automatic closing device 6, thereby forming a wire in the storage space. Can be made as large as possible, and a more stable brake release operation can be performed.

REFERENCE SIGNS LIST 1 shutter curtain 3 guide rail 5 switch 6 automatic closing device 7 manual closing device 70 operating portion 71 pressing portion 72 lever 8 shutter case 9 wire housing portion W wire

Claims (6)

With shutter curtains,
Left and right guide rails that receive and guide both ends of the shutter curtain in the width direction,
Switchgear,
An automatic closing device that releases the brake of the switchgear and lowers the shutter curtain by its own weight,
A manual closing device that manually activates an automatic closing device to lower the shutter curtain by its own weight;
With
The manual closing device includes an operation unit, a wire connecting the operation unit and the automatic closing device, and is configured to mechanically operate the automatic closing device via the wire by operation of the operation unit,
A wire accommodating portion for accommodating the wire is provided in a height direction adjacent to one of the guide rails, and an upper portion of the wire accommodating portion communicates with a storage space of the switchgear and the automatic closing device. The wire extends in the height direction in the wire housing portion, the operation portion is provided on a surface portion of the wire housing portion,
Shutter device. The operation unit includes a pressing unit that releases the brake via a wire, and a lever that returns the brake via the wire,
On the surface of the wire housing, the pressing portion and the lever are arranged in a vertical direction.
The shutter device according to claim 1. The pressing portion includes a pressing plate having an area larger than an opening formed in a surface portion of the wire housing portion,
The pressing plate is movable from the opening toward the inside of the wire housing, and is urged from the inside toward the opening,
In the non-pressed state, the pressing plate closes the opening from the inside by the peripheral edge of the pressing plate abutting against the back surface of the surface of the wire housing.
The shutter device according to claim 2. The automatic closing device is located close to the switchgear;
The wire is wound around the peripheral surface of the switchgear in the storage space, and is connected to the automatic closing device.
The shutter device according to claim 1.   The shutter device according to any one of claims 1 to 4, wherein the opening / closing device and the automatic closing device are located above and outside the one guide rail. The storage space is partitioned into a first space and a second space by a mount of the switchgear,
The first space is located above the wire housing portion, the switchgear and the automatic closing device are located in the second space, an opening is formed in the mounting table, A wire extends from the first space to the second space through the opening;
The shutter device according to claim 1.

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