JP2002038856A - Closing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a closing device with a simple structure. SOLUTION: A shutter device 1, closing device, is provided with a closing body 11 closing a closing part 3 to be shut off moving toward a floor 2 and a sensing lever body 31 provided on the head side of the moving direction of this closing body 11. This sensing lever body 31 detects a block A preventing the movement of the closing body 11 by coming in contact with it. The shutter device 1 is provided with a contact part 51 maintaining an interval 50 regulating the movement toward the floor 2 of this closing body 11 with connecting the closing body 11 and preventing detect of the floor 2 with the sensing lever body 31.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a closure device which can be simplified in construction.

[0002]

2. Description of the Related Art A conventional closing device is provided with, for example, a vertically movable closing body composed of a plurality of slats and a rotatable sensing lever body located at the lower end of the closing body. Provided obstacle detection means. Also,
The closing device includes a floor near-side position detecting means such as a reed switch for detecting that the descending closing body has reached the floor near-side position, and the closing body performs a predetermined operation according to an operation of the operating means and the like. Control means configured by a switch controller for controlling the drive motor as described above.

FIG. 8 shows the operation of the conventional closing device.
When the opening operation part of the operating means is operated when the closed part is closed (step 1), the closing body starts the opening operation (step 2), and when the closed part is opened, the operating means is opened. Is operated (step 3), the closing body starts the closing operation (step 4).

When the sensing lever body comes into contact with an obstacle during the closing operation of the closing body, that is, when the closing body descends, and the obstacle detecting means detects the obstacle (step 5), the closing body detects a predetermined obstacle. The operation is performed (step 6). If the near-floor position detecting means detects that the closing body that is descending has reached the near-floor position (step 7), the control unit subsequently contacts the sensing lever body with the floor surface and causes an obstacle. Even if an obstacle detection signal is received from the object detection means, the obstacle detection signal is ignored. When the stop operation unit is operated when the closing body is lowered (Step 8), the closing body stops (Step 9),
When the opening operation unit is operated (Step 10), the closing body starts the opening operation (Step 11).

When the control unit determines that the closed body has reached the predetermined lower limit position by detecting the lower limit with a rotary encoder or the like (step 12), the control unit controls the drive motor to move the closed body to the predetermined lower limit position. (Step 13).

[0006]

However, the above-mentioned conventional closing device is intended to prevent the control unit from judging the floor surface as an obstacle when the sensing lever body is actuated by contact with the floor surface. In addition, since the configuration is such that the front-of-floor position detection means is provided separately from the obstacle detection means, the number of components is large and the configuration is relatively complicated.

[0007] The present invention has been made in view of the above points, and an object of the present invention is to provide a closing device that can be simplified in configuration.

[0008]

According to a first aspect of the present invention, there is provided a closing device which moves toward an opposing portion to close a portion to be closed, and which is provided at a front end side in a moving direction of the closing member. A detection unit that detects an obstacle that hinders movement of the body by contact, and restricts the movement of the closing body toward the facing unit by contacting the closing body, and does not allow the detecting unit to detect the facing unit. And a contact portion for maintaining a gap.

In this configuration, the contact portion comes into contact with the closing body to restrict the movement of the closing body toward the opposing portion, and a gap for preventing the detecting portion from detecting the opposing portion is maintained. There is no necessity of a conventional means for detecting a position near the floor, and the configuration is simplified.

The closing device according to a second aspect of the present invention is the closing device according to the first aspect, further comprising a movement restricting portion that restricts the movement of the closing body to a side opposite to the opposing portion side, and wherein the contact portion includes the moving portion. It is provided integrally with the regulation part.

In this configuration, since the contact portion is provided integrally with the movement restricting portion, the number of components is reduced as compared with a configuration in which the contact portion is a single component, and the configuration is further simplified. Become.

According to a third aspect of the present invention, there is provided a closing device which moves toward an opposing portion to close a portion to be closed, and which is provided at a front end side in a moving direction of the closing member to prevent the closing device from moving. A detecting unit that detects an obstacle by contact, and a contact that abuts the opposing portion to restrict the movement of the closing body toward the opposing portion, and maintains a gap in which the detecting portion does not detect the opposing portion. And a part.

In this configuration, the contact portion comes into contact with the opposing portion to restrict the movement of the closing body toward the opposing portion, and a gap for preventing the detecting portion from detecting the opposing portion is maintained. There is no necessity of a conventional means for detecting a position near the floor, and the configuration is simplified.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of an embodiment of the closing device according to the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a shutter device as a closing device. This shutter device 1 opens, for example, a predetermined portion of a closed portion 3 above a floor surface 2 as an opposing portion, Or to close. In addition, the part 3 to be closed is
It is a doorway or a window which is an opening.

The shutter device 1 is provided with a pair of left and right elongated guide rails 5, 5 having a longitudinal direction in the vertical direction. It is disposed on the left and right side edges of the closed portion 3.

The upper end of each of the pair of guide rails 5 is inserted into a shutter box 6 as an elongated box-shaped closing body accommodating means having a longitudinal direction in the left-right horizontal direction.

In the shutter box 6, an elongated rectangular opening 7 is formed in the lower surface along the longitudinal direction of the shutter box 6, and the upper end of each guide rail 5 is formed through both ends of the opening 7. Are inserted into the shutter box 6. As shown in FIGS. 1 to 3, a light emitter 9a and a light receiver 9b are attached to the lower surface of the shutter box 6 via an attachment member 8, and these light emitters 9a and light receivers 9b are provided. Is disposed at a position near one end of the shutter box 6 in the longitudinal direction. This luminous body
9a emits detection light such as infrared rays downward, and the photoreceptor 9b
Receives reflected light from below, and outputs an obstacle detection signal based on the reception of the reflected light from the photoreceptor 9b.

On the other hand, inside the shutter box 6, a winding shaft or the like formed of a cylindrical body or the like whose axial direction coincides with the longitudinal direction of the shutter box 6, that is, the left and right horizontal direction of the shutter device 1. A body 10 is rotatably disposed, and a closed body 11 that moves toward the floor surface 2 to close the closed portion 3 is wound around the wound body 10 in a rewindable manner.
The winding body 10 receives a driving force from a driving motor 12 as a closing body driving means via a transmission means (not shown).
Drives and rotates in a predetermined direction.

The closing body 11 moves in the opening direction O for opening the closed part 3 and the closing direction C for closing the closed part 3 along the closed part 3 in accordance with the rotation of the winding body 10. It is possible to move up and down in the vertical direction.

The closing body 11 has, for example, a substantially rectangular plate-shaped closing body 13 having flexibility, and a longitudinally extending left and right horizontal direction provided at a lower end of the closing body 13 in the closing movement direction. It is composed of a substantially elongated rectangular board-shaped skirting board 14 having a direction.

The closing body 13 is, for example, a shutter curtain formed of a plurality of slats 15 made of metal or synthetic resin connected to each other.
15 are connected to each other so as to be able to approach / separate from each other so that they can slightly expand and contract vertically.

As shown in FIGS. 2 to 4, the skirting board 14 has an elongated rectangular plate-like hollow skirting board main body 21 along a vertical plane. Locking engagement portion 2 as an engagement portion for a pair of key bars and the like from both side end surfaces in the direction.
Reference numerals 2 and 22 project toward the left and right sides, respectively, and enter the corresponding guide rails 5. This locking engagement part
Reference numeral 22 is provided on the closing body 11 and moves up and down integrally with the closing body 11. The locking position in the guide rail 5 and the unlocking in the baseboard main body portion are operated in response to the operation of an internal lock operation lever (not shown). Move between positions.

As shown in FIGS. 2 and 3, a lever body receiving portion 23 is integrally provided at the lower end of the baseboard main body portion 21 so as to protrude toward the front of one of the shutter devices 1. The mounting portion 24 is integrally provided so as to project toward the front of the other shutter device 1.

The lever body receiving portion 23 has an elongated rectangular plate-shaped horizontal plate portion 26 extending along a substantially horizontal plane, and the rear end portion of the horizontal plate portion 26 is connected and fixed to the lower end portion of the baseboard main body portion 21. , Horizontal plate
From the front end of 26, an elongated rectangular plate-like vertical plate 27 extending substantially along the vertical plane is integrally formed so as to protrude downward. At the lower end of the vertical plate portion 27, a receiving plate portion 28 is integrally formed so as to project rearward. And these horizontal plate parts 26,
A lever housing portion 29 is provided so as to be surrounded by the vertical plate portion 27 and the receiving plate portion.

The mounting part 24 has a rotatable rotating body, for example, a sensing lever body 31, which is a detecting body as a detecting part for detecting an obstacle A which hinders the downward movement of the closing body 11 by contact. A reflector 32, which is an interlocking reflector that rotates in conjunction with the sensing lever body 31 and is attached, is attached.
Numerals 32 are rotatable about respective rotation center axes in the horizontal direction parallel to each other. Note that the sensing lever body 31, the reflection plate 32, the light emitting body 9a, the light receiving body 9b, and the like constitute an obstacle detecting means 33.

The sensing lever body 31 is provided on the distal end side of the closing body 11 in the closing direction so as to be able to enter and exit the closing body 11, is disposed substantially below the skirting board main body 21, and has a longitudinal direction in the left-right horizontal direction. It is formed in an elongated plate shape having a substantially U-shaped cross section, and has a length substantially equal to the length in the left-right direction of the skirting board 14 of the closing body 11, or a length slightly shorter than the length in the left-right direction of the skirting board 14 of the closing body 11. Is set to

That is, the sensing lever body 31 has an elongated rectangular plate-shaped bottom plate portion 35, and a curved front plate portion 36 is integrally formed from the front end of the bottom plate portion 35 so as to protrude upward. From the rear end of the bottom plate 35, a flat rear plate 37 is integrally formed to protrude upward. At the upper end of the front plate portion 36, a contact portion 38 that comes into contact with and separates from the receiving plate portion 28 of the lever body receiving portion 23 of the baseboard 14 is integrally formed so as to project forward. At the upper end of the rear plate portion 37, a support shaft portion 39 whose axial direction coincides with the horizontal direction is integrally formed, and this support shaft portion 39 is turned around a shaft fitting portion 40 of the mounting portion 24 having a C-shaped cross section. Fits freely and supports the shaft
The sensing lever body 31 is rotatable about 39.

As shown in FIG. 2, the contact portion 38 of the front plate portion 36 contacts the upper surface of the receiving plate portion 28 of the skirting board 14 by its own weight, as shown in FIG. Is held in a slanted state at the lower end, and is in a non-detection state. Further, in this non-detection state, the lower front side of the sensing lever body 31 is not housed in the lever housing part 29, and the lower end surface of the closing body 11, ie, the lever body receiving part 23 of the baseboard 14 of the closing body 11, is received. Plate 28
On the other hand, the reflector 32 has a substantially vertical evacuation posture, and is in a state where the detection light from the light emitter 9a cannot be reflected toward the light receiver 9b.

As shown in FIG. 3, when the sensing lever body 31 is lowered integrally with the closing body 11, for example,
When it comes into contact with the obstacle A together with the receiving plate portion 14 of 14, it is pressed by the obstacle A and rotates around the support shaft portion 39, and the front plate portion 36.
The contact portion 38 is separated upward from the upper surface of the receiving plate portion 28 of the baseboard 14, and the lower front portion is accommodated in the lever accommodating portion 29, and the detection state is a non-protruding state in which it enters the closing body 11.

At this time, in a state where the sensing lever body 31 has rotated by a predetermined amount or more, the reflecting plate 32 starts to rotate about the shaft portion 32a. Is changed from the retracted position to the substantially horizontal facing position, and the reflector 32 reflects the detection light from the light emitter 9a toward the light receiver 9b as reflected light. Then, the obstacle detecting means 33 outputs an obstacle detection signal based on the reception of the reflected light from the light receiving body 9b. The sensing lever body 31 enters the sensing state in a state where the sensing lever body 31 has been rotated by a predetermined amount or more necessary for the reflecting plate 32 to be in the facing posture.

On the other hand, slit-shaped insertion openings 41, 41 having a longitudinal direction in the vertical direction, are formed on the inner surfaces, which are the opposing surfaces of the pair of guide rails 5, which oppose each other. I have. Further, a guide portion (not shown) which is elongated in the vertical direction is formed inside each guide rail 5,
The side edges along the direction of movement of the closing body 13 and the locking engaging portions 22 of the baseboard 14 are inserted into the guide portions through the insertion openings 31 and guided by the guide portions. A lock device housing (not shown) is formed inside the lower end of each guide rail 5, and a locking unit that is a movement restricting body as a pair of left and right movement restricting units, such as an electric lock device, is formed in the lock device housing. 42, 42 are housed.

The electric lock device 42 restricts the closing body 11 stopped at a predetermined lower limit position from moving upward to the side opposite to the floor surface 2 side, as shown in FIG. The guide rail 5 has a substantially rectangular parallelepiped device main body 43 fitted into the lock device accommodating portion, and the front of the guide portion, which is the side facing the moving position of the locking engagement portion 22 of the device main body 43. A stopper window (not shown) is formed on the side surface.

A support shaft (not shown) whose axial direction coincides with the horizontal direction is disposed in the apparatus main body 43. A stopper body 45 as a stopper means such as a latch can be rotated by the support shaft. It is supported by. The stopper body 45 includes, for example, a pair of left and right substantially triangular side plate portions 4 through which a support shaft is inserted.
The upper and lower edges of both side plate portions 46 are connected by an inclined plate portion 47, and the lower edge portion of both side plate portions 46 is a bottom plate portion.
Connected at 48.

The stopper body 45 is rotated about a support shaft based on a driving force from a driving source such as a cylinder (not shown), and is rotated with respect to the moving position of the locking engagement portion 22. It moves back and forth through the window. When the locking member 22 of the stopper body 45 advances to the moving position, a part of the stopper body 45 projects from the front side surface of the device main body 43 through the stopper window, and the projecting portion of the stopper body 45 When the locking engagement portion 22 is brought into contact with the bottom plate portion 48, the lifting of the locking engagement portion 22 is restricted, and the movement of the closing body 11 in the opening direction is restricted. Locking engagement part 22 of stopper body 45
At the time of retreat from the moving position, the entire stopper body 45 enters the apparatus main body 43, the locking engagement portion 22 is allowed to move, and the up-and-down movement of the closing body 11 is allowed.

Further, at the lower part of the apparatus main body 43, a closing body is provided.
The shutter device 1 has a substantially rectangular parallelepiped block-shaped contact portion 51 that holds down a gap 50 where the sensing lever body 31 does not detect the floor surface 2 by restricting the downward movement of the closing body 11 by contact with the shutter 11.
It protrudes integrally toward the front.

Each of the pair of left and right contact portions 51 has a flat receiving surface portion 52 formed on the upper surface, and the locking engagement portion 22 at the lower end portion of the closing body 11 abuts on the receiving surface portion 52. As a result, a gap 50, which is a housing portion, is formed between the baseboard 14 of the closing body 11 and the floor surface 2, and the sensing lever body 31 is housed in the gap 50 while the floor surface 2 is not detected. .

The length of the contact portion 51 in the left-right direction is substantially the same as the length of the device body 43 in the left-right direction. A flat surface is formed on one side surface of the contact portion 51 facing the insertion opening 41, that is, a pair of left and right contact portions 51 opposed to each other and separated from each other via the closed portion 3. A receiving side surface portion 53 is formed. The receiving side surface portion 53 comes into contact with the side end surface of the skirting board main body portion 21 of the skirting board 14 of the closing body 11 so that the skirting board of the closing body 11
It is possible to restrict the movement of the shutter device 1 to either the left or right of the shutter device 1 and appropriately maintain the closed state by the closing body 11.

Further, the height of the contact portion 51 is such that the locking lever 22 is in contact with the receiving surface 52, that is, in the state shown in FIGS. Bottom plate 35
Is set so that its lower end is located at a position close to and above the floor surface 2. That is, the dimensions are such that a small space is formed between the sensing lever body 31 and the floor surface 2.

The height of the contact portion 51 is not shown, but may be a size in which no space is formed between the sensing lever body 31 and the floor 2. In order to avoid this, the dimensions must be such that the sensing lever body 31 is kept in the non-sensing state.

On the other hand, as shown in FIG. 1, the shutter device 1 includes operating means 65 such as a wall switch composed of a plurality of push buttons and the like. 66, a closing operation unit 67 and a stop operation unit 68 are provided. A control unit 71 such as a switchgear controller is electrically connected to the operation unit 65, and the control unit 71 is also electrically connected to the drive motor 12, the obstacle detection unit 33, a power supply, and the like. ing. This control unit includes operating means 65,
The drive motor 12 and the like are controlled so that the closing body 11 performs a predetermined operation according to a predetermined electric signal from the obstacle detection means 33 and the like.

The shutter device 1 has a distance detecting means (not shown) constituted by a rotary encoder or the like, and this distance detecting means detects that the baseboard at the lower end of the closing body has reached a predetermined lower limit position. Detect.

Next, the operation of the embodiment will be described with reference to FIG.

When the opening operation part 66 of the operating means 65 is operated when the closed part 3 is closed (step 1), the locking device 42
The lock is released based on the control output from the control unit 71. That is, the stopper body 45 of the lock device 42 rotates in a predetermined direction to change from the advanced state to the retracted state.
The entire device is retreated from the moving position of the locking engagement portion 22 and the device body portion
Get inside 43. Subsequently, the driving force is output from the drive motor 12 based on the control output from the control unit 71, the closing body 11 starts the opening operation, and the closing body 11 rises in the opening direction O along the closed portion 3. (Step 2).

During this ascent, the locking engaging portion 22 of the baseboard 14 of the closing body 11 is not restricted by the stopper body 45 of the locking device 42 from moving. Continue to rise unless is operated. Then, when the closing body 11 reaches the upper limit position, the output of the driving force of the drive motor 12 is prohibited, and the closing body 11 stops at the upper limit position which is a predetermined fully open stop position.

On the other hand, when the closed portion 3 is opened, the operating means 65
When the closing operation section 67 is operated (step 3), the drive motor
Based on the driving force from 12, the closing body 11 starts a lowering operation as a closing operation (step 4), and the closing body 11
Along the closing direction C.

When the closing body 11 descends, the sensing lever body 31 which is descending together with the closing body 11 comes into contact with the obstacle A which has entered the closed portion 3, and the obstacle detecting means 33 detects the presence of the obstacle A. When the detection is performed (Step 5), the control unit 71 controls the drive motor 12, and the closing body 11 performs a predetermined obstacle detection operation (Step 6). For example, the closure 11 rises upside down. When the stop operation unit 68 is operated (Step 7) when the closing body 11 is lowered, the closing body 11 is stopped (Step 8), and when the opening operation unit 66 is operated (Step 9), the closing body is operated. 11 starts the opening operation (step 10).

Then, the control unit 71 detects the lower limit by a rotary encoder or the like (step 11), and
When it is determined that has reached the predetermined lower limit position, the drive motor 12
, Whereby the closing body 11 stops at the predetermined lower limit position (step 12).

As described above, according to the above embodiment, the contact portions 51, 51 arranged in the lower end portions of the pair of left and right guide rails 5, 5 are brought into contact with the closing body 11 by this. Since the lowering movement of the closing body 11 is restricted and the gap 50 that does not allow the sensing lever body 31 to contact the floor 2, that is, the gap 50 that does not allow the sensing lever body 31 to detect the floor 2, is maintained. The front position detecting means and the like can be eliminated, and the configuration can be simplified. In addition, despite the simple configuration, it is possible to effectively prevent the sensing lever body 31 from detecting the floor surface 2 and prevent the closing body 11 from malfunctioning.

Further, since the contact portion 51 is provided integrally with the lower portion of the device main body 43 of the lock device 42, the number of components is reduced as compared with a configuration in which the contact portion is formed as a single component, and the like. The configuration can be simplified, and manufacturing, construction, and maintenance can be facilitated, and the cost can be reduced.

In the above-described embodiment, the shutter device 1 is provided with the contact portion 5 provided integrally with the lock device 42.
Although the configuration has been described as including the components 1 and 51, for example, as illustrated in FIG. 6, a configuration including separate contact portions 81 and 81 that are separate and independent from the lock device 42 may be employed.

The contact portion 81 is fixed to the guide rail 5 by fixing means such as rivets or screws (not shown), and is disposed inside the lower end of the guide rail 5. Further, the contact portion 81 has a front plate portion 82 and a rear plate portion 83 which are opposed to each other in the front-rear direction of the shutter device 1.
The upper ends of the rear plate 82 and the rear plate 83 are integrally connected by a receiving plate 84, and projecting plates 85, 85 extend in the front-rear direction from the lower ends of the front plate 82 and the rear plate 83. Each protrudes.

The receiving plate portion 84 of the contact portion 81 is provided with a closing body.
The end of the baseboard body 21 of the baseboard 11 of the baseboard 11, i.e., the lower surface of the part of the baseboard 21 of the baseboard 21 of the baseboard 14 where the sensing lever body 31 is not extended abuts, As a result, a gap 50 which is a housing portion is formed between the baseboard 14 of the closing body 11 and the floor 2,
The sensing lever body 31 is accommodated in the gap 50 while the floor surface 2 is not detected.

As described above, in the contact portion 81 of FIG. 6, as in the case of the contact portion 50 of FIG.
And the gap 50 not allowing the sensing lever body 31 to contact the floor surface 2, that is, the gap 50 not allowing the sensing lever body 31 to detect the floor surface 2, and thus has the effect of simplifying the configuration. Can play.

In each of the above embodiments, the shutter device 1 has been described as having the contact portions 51 and 81 fixed to the guide rail 5 side.
As shown in FIG. 7, a configuration may be provided in which contact portions 91, 91 are provided on the side of the closing body 11 that moves and move integrally with the closing body 11.

The contact portion 91 is fixed to the left and right ends at the lower end, which is the front end side in the closing movement direction of the closing body, that is, a portion inserted into the guide rail by fixing means (not shown). That is, the abutting portion 91 is provided at a corner portion where the sensing lever body 31 serving as a sensing unit as a sensing unit at the lower end of the closing body is not provided, and is always located in the guide rail 5. In addition, the contact portion 91 may be provided at a portion other than the corner portion of the lower end portion of the closing body, but in order to prevent the contact portion from being exposed to the outside and not to impair the appearance. It is preferable to provide it in a portion swallowed in the guide rail.

When the lower end of the contact portion 91 comes into contact with the floor surface 2 when the closing member 11 descends during the closing movement, the accommodating portion is formed between the lower end portion of the closing member and the floor surface 2. A gap 50 is formed, and the sensing lever body 31 is accommodated in the gap 50 without detecting the floor surface 2.

Therefore, in the contact portion 91 shown in FIG. 7, the downward movement of the closing body 11 is restricted by the contact with the floor surface 2, and the gap 50 that does not allow the sensing lever body 31 to contact the floor surface 2, that is, the sensing lever body The gap 31 that does not allow the floor surface 2 to be detected can be maintained at 31, and the same operation and effect as those of the structure including the contact portion 50 of FIG. 4 and the contact portion 81 of FIG. 6 can be achieved. obtain.

In each of the above embodiments, the closing device is described as the shutter device 1. However, for example, a door device such as a sliding door, a blind device, a sliding wall device, a screen device, a smokeproof hanging device, and the like. And an awning device.

In each of the above embodiments, the closing body 11 has been described as being configured to be movable in the vertical direction along the portion 3 to be closed. Configuration that can be moved horizontally along etc.
A configuration that is movable in an inclined direction that is inclined with respect to a floor surface or the like, or a configuration that is capable of being moved in a combined direction of these is also possible.

Further, in each of the above embodiments, the closing body 11 has been described as having a plurality of slats 15 connected to each other. For example, the closing body 11 may be connected to any of slats, panels, pipes, and sheet pieces. Or form
Alternatively, at least one of these slats, panels, pipes, and sheet pieces may be appropriately combined and formed, and furthermore, one formed of one net-like member, or one sheet member The sheet member may be formed by connecting the side edges of a plurality of sheet members to each other, or may be a simple plate-shaped member, or the like, and may constitute one closed body.

In each of the above embodiments, the closing body 11 has been described as being driven down by the driving force from the drive motor 12, but may be driven down by its own weight. .

In the above-described embodiment, the storage type of the closing body 11 is described as a winding type, but may be any type such as a folding type, a feeding type, and a separation polymerization type.

Further, the stopper means for changing the closing body 11 from the movable free state to the immovable locked state may be configured to have, for example, a latch, a hook, a rod and the like.

Further, the lock device 42, which is a movement restricting portion,
Is used only to close the closing device,
A configuration without a function of a release unit for releasing the restriction on the movement of the closing body 11 in the opening direction O may be adopted.

The control unit 71 such as a switch controller
May be provided in the shutter box 6 or may be provided independently or in conjunction with each other in the guide rail 5 or the lock device 42.

Further, the contact portion 5 holding the gap 50 in which the detecting portion such as the sensing lever body 31 does not detect the facing portion such as the floor surface 2.
1, 81, 91 may be provided at an immovable portion other than the closing body 13 such as the guide rail 5, a lower frame, a floor, or the like, which is an opposing portion. It may be provided at a portion that contacts the part. The contact parts 51, 81, 91
They may be provided integrally with these parts or may be provided separately. The contact portions 51, 81, and 91 can be provided at arbitrary positions such as a portion on the winding body 10 side including the shutter box 6 and an intermediate portion of the guide rail 5, as long as a gap that does not detect the facing portion can be maintained. Yes, and the quantity and configuration are arbitrary.

In the above-described embodiment, the detecting portion such as the sensing lever body 31 has been described as being provided at the lower end of the closing body 11 at the front end in the closing movement direction. In the configuration in which the closed part is opened and closed with a slide closing body to be accommodated, the door end side (close movement direction side)
The detection unit may be provided on one or both of the front ends of the door butt side (the opening movement direction side).
When the detection unit is provided on the front end side in the closing movement direction, the contact part restricts the closing movement of the closing body to the opposing part side (the frame facing the door tip side), and a gap where the detection part does not detect the opposing part is provided. Hold and
When the detection unit is provided on the front end side in the opening movement direction, the contact portion restricts the opening movement of the closing body to the opposing portion side (the frame facing the door end side), and a gap where the detection portion does not detect the opposing portion is provided. Hold.

Further, a sensing lever body 31 as a sensing unit
Has been described as a rotatable configuration in the above-described embodiment, for example, a configuration that swings linearly in a vertical direction, a horizontal direction, an oblique direction, or the like may be used.

The transmission of the obstacle detection signal from the obstacle detection means 33 to the control unit 71 may be, for example, a wireless transmission such as an infrared ray or a radio wave, or a wired transmission such as a communication cable or an optical fiber cable. Transmission may be performed, and the transmitted signal may be a single signal or a continuous or intermittent signal.

Further, the obstacle detection means 33 is optional as long as it transmits an obstacle detection signal to the control section 71 in conjunction with the movement of the detection section 31 on the front end side in the moving direction of the closing body 11. , A micro switch, a configuration having a unit that transmits an electric signal by an electric sensor such as a tape switch, etc., may be detected by an optical system sensor such as a photoelectric tube, a fluid pressure sensor such as a gas or a liquid, a magnetic sensor, and the like. It may be configured to include a device that converts the signal into an electric signal based on the detection, a device that mechanically detects the signal through a cord-like member such as a wire or a belt-shaped member such as a belt, and converts the signal into an electric signal based on the detection. . Further, a configuration having a device that detects purely only by a mechanical method may be used. Note that, for example, a structure in which a tape switch, a microswitch, a fluid pressure sensor, or the like is provided as a detection unit on the distal end side in the movement direction of the closing body 11, may be a unit in which the detection unit itself is the above-described sensor. .

In the above-described embodiment and the like, the gap 50 is apparently closed when the contact portions 51, 81, and 91 hold the gap 50 due to the configuration of the detection portion such as the sensing lever body 31. However, since the detection unit is actually in a free state such as rotatable or swingable, the detection unit is locked releasably by a detection unit locking means (not shown) and comes into contact with a lower frame, a floor surface, or the like as an opposing portion. The configuration may be such that the detection unit cannot rotate or swing while the units 51, 81, and 91 hold the gap 50.

Further, in place of providing the detecting portion locking means, when the gap 50 is held by the abutting portions 51, 81, 91, the sensing lever body 31 or the like in a free state such as rotatable or swingable is provided. In order to prevent the detection unit from being operated from the outside or to make the gap 50 invisible from the outside, the closing body 11
A detecting unit covering means such as a gap closing member may be provided on the side, the guide rail 5 side, the floor surface 2 side, or the like.

[0074]

According to the first aspect of the present invention, the contact portion abuts on the closing body to restrict the movement of the closing body toward the opposing portion, and maintains the gap where the detecting portion does not detect the opposing portion. Therefore, the means for detecting the near-floor position, which is conventionally required, is not always necessary, and the configuration can be simplified.

According to the second aspect of the present invention, since the contact portion is provided integrally with the movement restricting portion, the number of components is reduced as compared with a configuration in which the contact portion is formed as a single component, and the like. The configuration can be simplified.

According to the third aspect of the present invention, the contact portion abuts on the opposing portion to restrict the movement of the closing body toward the opposing portion, and the gap keeps the detecting portion from detecting the opposing portion. In addition, the means for detecting the near side of the floor, which is conventionally required, is not always necessary, and the configuration can be simplified.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a closing device of the present invention.

FIG. 2 is a cross-sectional view of a detection unit in a detection state of the closing device.

FIG. 3 is a cross-sectional view of a detection unit of the same closing device in a non-detection state.

FIG. 4 is a perspective view of a movement restricting portion of the closing device.

FIG. 5 is a flowchart for explaining the operation of the above closing device.

FIG. 6 is a perspective view showing a modification of the contact portion of the closing device.

FIG. 7 is a perspective view showing a modification of the contact portion of the closing device.

FIG. 8 is a flowchart for explaining the operation of the conventional closing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shutter device as a closing device 2 Floor surface as an opposing part 3 Closed part 11 Closed body 31 Sensing lever body 42 as a detecting part 42 Lock device as a movement restricting part 50 Gap 51, 81, 91 Contact part A Obstacle

Claims (3)

[Claims] 1. A closing body that moves toward an opposing portion, a detecting unit that is provided at a front end side in a moving direction of the closing body and detects an obstacle that hinders the movement of the closing body by contacting the closing body, A closing portion that contacts a body to restrict movement of the closing body toward the facing portion, and that holds a gap in which the detecting portion does not detect the facing portion. 2. The apparatus according to claim 1, further comprising: a movement restricting portion for restricting a movement of the closing body to a side opposite to the opposing portion, wherein the contact portion is provided integrally with the movement restricting portion. The closure device of claim 1. 3. A closing body that moves toward the facing unit, a detecting unit that is provided on the distal end side in the moving direction of the closing body, and detects an obstacle that hinders the movement of the closing body by contacting the closing body. A contact portion that abuts on the portion to restrict the movement of the closing body toward the facing portion, and maintains a gap that prevents the sensing portion from detecting the facing portion.