JP2001220974A - Closing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a closing device capable of properly preventing erroneous operation of a closing body 16. SOLUTION: This closing device is provided with the movable closing body 16 for closing a closing object part 3. An obstacle detecting means 41 is provided for detecting whether or not an obstacle A being an obstacle to a movement of this closing body 16 is positioned in the closing object part 3. A timer means 40 is provided for counting elapsed time from movement start time of the closing body 16. A control means 36 neglects an obstacle detecting signal from the obstacle detecting means 41 until time counted by the timer means 40 reaches prescribed time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a closing device which can appropriately prevent a malfunction of a closing body.

[0002]

2. Description of the Related Art Conventionally, in a closing device such as a shutter device or a screen device, an obstacle is moved into a closed portion in consideration of a case where an obstacle may enter the closed portion while the closing body is moving. There is a case where an obstacle detecting means capable of detecting whether or not the vehicle is located at a position is provided.

[0003]

However, in the case where an obstacle detecting means for detecting whether such an obstacle is located in the closed portion is provided, for example, an obstacle erroneously output from the obstacle detecting means is required. The problem is how to prevent the closing body from malfunctioning by the object detection signal.

[0004] 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 capable of appropriately preventing a malfunction of a closing body.

[0005]

According to a first aspect of the present invention, there is provided a closing device, wherein a movable closing member for closing a closed portion and an obstacle which hinders the movement of the closing member are located at the closed portion. An obstacle detecting means for outputting an obstacle detection signal when detecting that an obstacle is located in the closed part, and measuring an elapsed time from the start of movement of the closed body. Timer means for performing, and until the elapsed time measured by the timer means reaches a predetermined time, ignores the obstacle detection signal from the obstacle detection means and ignores the elapsed time measured by the timer means. After reaching a predetermined time, a control means for causing the closing body to perform a predetermined obstacle detection operation based on an obstacle detection signal from the obstacle detection means is provided.

In this configuration, the control means ignores the obstacle detection signal from the obstacle detection means until the elapsed time measured by the timer means reaches the predetermined time. Time is likely to cause noise even in the obstacle detection means, etc., and even if the obstacle detection means erroneously outputs an obstacle detection signal until the elapsed time measured by the timer means reaches a predetermined time, the obstacle is closed. Since the body does not perform a predetermined obstacle detection operation, malfunction of the closing body is prevented.

[0007] A closing device according to a second aspect of the present invention is a closure that is movable along a portion to be closed in at least a closing direction for closing the portion to be closed, and is provided on the side of the closure, and is provided on the side of the closure. A reflector that is in a state where the tip end in the closing direction can be reflected when detecting an obstacle that hinders the movement of the closing body, and is provided on the closed part side in a state in which the closing body side is opposed to the closing body side, An optical sensor that emits detection light from the light emitting section toward the reflector and outputs an obstacle detection signal when the light reflected by the reflector is received by the light receiving section; Timer means for measuring an elapsed time from the start of movement in the closing direction from the state, and an obstacle from the optical system sensor until the elapsed time measured by the timer means reaches a predetermined time. Ignore the detection signal and Control means for causing the closing body to perform a predetermined obstacle detection operation based on an obstacle detection signal from the optical system sensor after the elapsed time measured by the time sensor reaches the predetermined time. It was done.

In this configuration, in order to sufficiently secure the effective opening of the closed portion, when the distance between the tip of the closing body and the optical system sensor in the fully opened state is set short, the timer means is used. Until the elapsed time counted by the timer reaches the predetermined time, the optical sensor is reflected by a portion other than the reflector at the tip of the closing body due to, for example, the proximity of the tip of the closing body and the optical sensor. Even if an obstacle detection signal is erroneously output based on the reflected light, the control means ignores the obstacle detection signal and does not cause the closing body to perform a predetermined obstacle detection operation. Since the unit and the optical system sensor can be sufficiently close to each other, a malfunction of the closing body is appropriately prevented while ensuring an effective opening of the closed portion.
In addition, the fully opened state of the closing body includes, in addition to the substantially physically fully opened state of the closed portion, a state preset on use of the present closing device, and an approximate state close to these fully opened states. Meaning.

A third aspect of the present invention is to detect a movable closing body for closing a closed portion, and whether or not an obstacle that hinders the movement of the closing body is located in the closed portion. ,
Obstacle detecting means for outputting an obstacle detection signal when detecting that an obstacle is located in the closed portion, and a moving distance of the closing body and a driving distance of a driving means for moving the closing body. Distance detection means for detecting at least one of the above, and an obstacle detection signal from the obstacle detection means is ignored until at least one of the moving distance and the driving distance detected by the distance detection means reaches a predetermined distance. Then, after at least one of the moving distance and the driving distance detected by the distance detecting means has reached the predetermined distance, a predetermined value is given to the closing body based on an obstacle detection signal from the obstacle detecting means. And control means for performing an obstacle detection operation.

In this configuration, the control means ignores the obstacle detection signal from the obstacle detection means until at least one of the moving distance and the driving distance detected by the distance detection means reaches a predetermined distance. Therefore, noise is likely to occur in the obstacle detecting means and the like for a predetermined time after the start of the movement, and the obstacle is detected until at least one of the moving distance and the driving distance detected by the distance detecting means reaches the predetermined distance. Even if the detecting means erroneously outputs an obstacle detection signal, the closing body does not perform a predetermined obstacle detecting operation, thereby preventing the closing body from malfunctioning.

[0011] A closing device according to a fourth aspect of the present invention is a closing body that is movable along a closed portion in at least a closing direction for closing the closed portion, and is provided on the side of the closing body, and is provided on the side of the closing body. A reflector that is in a state that can be reflected when the tip surface side in the closing direction detects an obstacle that hinders the movement of the closing body, and is provided in a state in which the closed body side faces the closed body side on the closed part side, An optical sensor that emits detection light from the light emitting section toward the reflector and outputs an obstacle detection signal when the light reflected by the reflector is received by the light receiving section; and movement of the closing body. Distance detecting means for detecting at least one of a distance and a driving distance of a driving means for moving the closing body; and at least one of the moving distance and the driving distance detected by the distance detecting means reaches a predetermined distance. Until the said Disregarding the obstacle detection signal from the optical sensor, after at least one of the moving distance and the driving distance detected by the distance detecting means reaches the predetermined distance, the obstacle detection from the optical sensor is performed. Control means for causing the closing body to perform a predetermined obstacle detecting operation based on a signal.

In this configuration, in order to sufficiently secure the effective opening of the closed portion, when the distance between the distal end of the closing body and the optical system sensor in the fully opened state is set short, the distance detecting means is used. During a period until at least one of the moving distance and the driving distance detected by the optical sensor reaches a predetermined distance, the optical sensor detects, for example, reflection at the distal end of the closing body due to the proximity of the distal end of the closing body and the optical system sensor. Even if an obstacle detection signal is erroneously output based on the light reflected by a part other than the body, the control means ignores the obstacle detection signal and performs a predetermined obstacle detection operation on the closed body. Since it is not possible to close the distal end portion of the closing body and the optical system sensor sufficiently, it is possible to appropriately prevent the malfunction of the closing body while sufficiently securing the effective opening of the closed portion. In addition, the fully opened state of the closing body includes, in addition to the substantially physically fully opened state of the closed portion, a state preset on use of the present closing device, and an approximate state close to these fully opened states. Meaning.

[0013]

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.

1 to 3, reference numeral 1 denotes a shutter device as a closing device. The shutter device 1 has a pair of left and right elongated guide rails 2, which have a longitudinal direction in a vertical direction and are spaced apart and opposed to each other. The pair of guide rails 2 are erected on the left and right side edges of the flat portion 3 to be closed. In addition, this closed part 3
Is, for example, an opening such as a doorway of a building (not shown), and a portion of the closed portion 3 which is the opening inside the building is:
As shown in FIG. 2, the door is opened / closed by a double door system 5 having a pair of doors 4, 4 which can protrude toward the shutter device 1.

The lower ends of the pair of guide rails 2 are integrally connected by a lower frame 6 as an elongated abutted portion having a longitudinal direction in the lateral direction of the shutter device 1. The lower frame 6 is fixed to the floor 7.

Further, each of the upper ends of the pair of guide rails 2 is inserted into a shutter box 8 which is an elongated hollow box-like body having a longitudinal direction in the horizontal direction.

The shutter box 8 has an elongated rectangular opening 9 which is opened downward on the lower surface along the longitudinal direction of the shutter box 8, and is provided at both ends of the opening 9 in the longitudinal direction. The upper end of the guide rail 2 is inserted.

As shown in FIG. 3, a retroreflective optical sensor 11 is mounted on the lower surface of the shutter box 8 via a mounting member 10, and the optical sensor 11 is It is located at the upper end of the closure 3. Further, as shown in FIG. 1, the optical system sensor 11 has a light emitting unit 12 which is located near one end in the lateral direction of the shutter device 1 and emits detection light such as infrared light downward. In addition, it has a light receiving unit 13 that receives reflected light from below. The optical sensor 11 outputs an obstacle detection signal when the light receiving unit 13 receives reflected light based on the detection light emitted from the light emitting unit 12.

On the other hand, inside the shutter box 8, a winding body 15 such as a winding shaft as a cylindrical body whose axial direction coincides with the longitudinal direction of the shutter box 8 is rotatably mounted. A flexible and planar closing body 16 that closes the entire closed portion 3 is wound around the winding body 15 in a cylindrical shape so as to be able to be rewound.

The closing body 16 has a closing direction C for closing the closed portion 3 along the closed portion 3 and the closed portion 3 while the both end portions in the width direction are guided by the two guide rails 2. Moves in the opening direction O, that is, moves up and down along the vertical direction which is the longitudinal direction of the shutter device 1. For example, many slats made of metal or synthetic resin
16a, 16a... Are connected to each other. The adjacent slats 16a, 16a are connected to each other so as to be able to approach and separate from each other, and the closing body 16 is configured to slightly expand and contract in the vertical direction.

The upper end of the closing body 16 is fixed to the winding body 15. The lower end of the closing body 16 has an elongated shape having a longitudinal direction in the left-right direction which is the lateral direction of the shutter device 1. A baseboard 21 serving as an abutting portion is provided.

The baseboard 21 comes into contact with the lower frame 6 when the closing body 16 is fully closed, and comes into contact with the lintel 8a on the lower surface of the shutter box 8 when the closing body 16 is fully opened.

The skirting board 21 has a skirting board main body 22 as shown in FIGS. 4 and 5, and a sensor 24 is attached to a sensor mounting portion 23 of the skirting board main body 22. It is attached so as to be rotatable around the part 25.

Further, the baseboard body 22 is provided with a reflector 27 which is directly or indirectly interlocked with the sensor 24, and is provided in the longitudinal direction in the lateral direction of the shutter device 1. In the shape of an elongated rectangular plate having Also,
The reflector 27 is rotatable about a support shaft 28 at the other end in the width direction (thickness direction of the closing body 16) so that one end side in the width direction (thickness direction of the closing body 16) moves up and down. It has become. The reflector 27 is provided at the lower end, which is the tip of the closing body in the closing direction C, and the optical sensor 11 is covered in a state in which the optical sensor 11 faces the reflector 27 as shown in FIG. The closing portion 3 is provided at an upper end portion which is a base end portion in the closing direction C.

Then, as shown in FIG.
When the contact portion 29 formed at one end of the sensor 24 supported by 25 is in contact with the sensor receiver 30 of the baseboard body 22 by its own weight, the sensor 24 is directly or indirectly connected to the sensor 24. The interlockingly connected reflector 27 has a substantially vertical retracting posture in which one end side in the width direction (the thickness direction of the closing body 16) is raised, and receives the detection light from the light emitting unit 12 of the optical sensor 11 as a light receiving unit. It is in an unreflective state toward 13. Note that the reflector 27 in the retracted position is not exposed to the outside, and has a structure to which dust and the like hardly adhere.

Further, as shown in FIG.
Is supported by the lower frame 6 or the closing body 16
When one end of the sensor 24 is separated from the sensor receiver 30 of the baseboard body 22 against its own weight by contact with the obstacle A that hinders the movement of the Directly or indirectly interlockingly linked reflector 27 is positioned in the width direction (closed
One end side (in the thickness direction of 16) is in a substantially horizontal facing posture in which the detection light from the light emitting unit 12 of the optical system sensor 11 is reflected toward the light receiving unit 13. That is, the reflector 27 in the facing posture is spaced apart from the optical sensor 11. In addition, the reflector 27 is in the fully opened state of the closing body 16,
It is always in the evacuation position and cannot be displaced to the opposing position.

On the other hand, as shown in FIG. 1, the shutter device 1 has an operating means 31 composed of a plurality of push buttons and the like.
The operation means 31 is provided with, for example, an open operation unit 32, a close operation unit 33, and a stop operation unit 34.

When the operating means 31 is operated,
An operation signal corresponding to the operation is transmitted to the motor 35 as a driving unit.
Is transmitted to the control means 36 for controlling

The control means 36 includes an optical sensor.
11 is connected, and a timer means 40 for measuring an elapsed time from when the closing body 16 starts moving in the closing direction C from the fully opened state, for example, is connected. In addition,
The time when the movement is started here means, for example, the operation means 31
When the motor 35 outputs a driving force to the closing body 16 via the winding body 15 based on the operation of the closing operation unit 33, for example, the closing body
The actual movement of the lower end of 16 is not a condition.

The control means 36 includes a timer means 40
The obstacle detection signal from the optical system sensor 11 is ignored until the time elapsed from the start of the movement of the closing body 16 measured at the time reaches a predetermined time. Further, the control unit 36 receives the obstacle detection signal from the optical system sensor 11 after the elapsed time from the start of the movement of the closing body 16 measured by the timer unit 40 reaches the predetermined time. Then, based on the obstacle detection signal, for example, the output of the driving force of the motor 35 is prohibited and the closing body 16 is stopped.

Here, the predetermined time is such that the optical system sensor 11 is not adversely affected by the reflected light reflected by the portion other than the reflector 27 at the tip of the closure 16 in the closing direction C. A predetermined time corresponding to the moving speed of the closing body 16, that is, the lower end of the closing body 16 and the optical sensor 11
This is the time required until the separation distance from the above becomes the allowable distance Ha shown in FIG.

For example, Ha = 40 mm, the distance H0 between the lower end of the closing body 16 in the fully opened state and the optical system sensor 11 = H0 =
If the lowering speed V of the closing body 16 is 20 mm and the lowering speed V of the closing body 16 is 50 mm / s, the predetermined time S measured by the timer means 40 is 0.4 seconds.
It is.

Incidentally, the optical system sensor 11, the reflector 27, the sensing body
The obstacle detection means 41 is constituted by 24 or the like. Further, the shutter device 1 is provided with a not-shown lower limit position detecting means for detecting that the skirting board 21 of the closing body 16 is located at a predetermined lower limit position. Reed switch mounted on 2, closing body 16
It is composed of a magnet and the like attached to the lower end of the.

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

When the opening member 32 of the operating means 31 is operated in the fully closed state of the closing member 16 (step 1), a driving force is output from the motor 35, and the closing member 16 starts the opening operation (step 2). .

On the other hand, when the closing body 16 is fully opened,
When the closing operation section 33 of the base 31 is operated (step 3), the timer means 40 starts counting time (step 4) and the motor
The closing body 16 starts the closing operation by the driving force from 35, and the closing body 16 descends in the closing direction C along the closed portion 3 (step 5). At the same time, the detection light is emitted from the light emitting section 12 of the optical sensor 11.

If the time measured by the timer means 40 has not reached the predetermined time (step 6), the control means 36 sends a signal from the optical system sensor 11 of the obstacle detecting means 41 to the obstacle detecting means 41. Even if an obstacle detection signal is received, the obstacle detection signal is ignored.

In the meantime, until the predetermined time is reached,
When the stop working part 33 of the operating means 31 is operated (step 7), the output of the driving force from the motor 35 is prohibited by the control signal from the control means 36, and the closing body 16 stops (step 8). . Further, when the opening operation part 32 of the operating means 31 is operated (step 9), the opening operation of the closing body 16 is started by the reverse drive of the motor 35 based on the control signal from the control means 36 (step 10). . Further, when the lower limit position detecting means detects that the skirting board 21 of the closing body 16 is located at the predetermined lower limit position (Step 11), the closing body 16 stops (Step 12).

On the other hand, a closed body measured by the timer means 40
When the elapsed time from the start of the movement of 16 reaches a predetermined time (step 6), the control means 36 is in a state where an obstacle detection signal can be input.

Then, after the time measured by the timer means 40 reaches a predetermined time, when the sensing body 24 comes into contact with the obstacle A and the reflector 27 is displaced from the retracted posture to the opposed posture,
The optical system sensor 11 receives the light reflected by the reflector in the facing posture by the light receiving unit 13 and outputs an obstacle detection signal (step 13).

Then, the control means 36 receives the obstacle detection signal, and causes the closing body 16 to perform a predetermined obstacle detection operation based on the obstacle detection signal from the obstacle detection means (step 14). That is, for example, the closing body 16 is stopped at a contact position with the obstacle A, instantaneously stopped at the contact position with the obstacle A, and immediately reversed (opened), or the closing drive is continued. However, the closing operation force is reduced.

When the obstacle A is not located in the closed portion 3 (step 13), if the stop working portion 33 of the operating means 31 is operated (step 15), the output of the driving force from the motor 35 is reduced. Forbidden, the closure 16 stops (step 16). Also, if the open operation section 32 of the operation means 31 is operated (step
17) Based on the control signal from the control means 36, the opening operation of the closing body 16 is started by the reversal drive of the motor 35 (step 18).

When the lower limit position detecting means detects that the skirting board 21 of the closing body 16 is located at the predetermined lower limit position (step 19), the closing body 16 is fully closed and stopped (step 19). Step 20).

As described above, according to the above-described embodiment, the control means 36 keeps the obstacle detection means 41 instructed by the obstacle detection means 41 until the elapsed time measured by the timer means 11 reaches a predetermined time in advance. Since the detection signal is ignored, even if the obstacle detection means 41 erroneously outputs the obstacle detection signal until the elapsed time measured by the timer means 11 reaches the predetermined time, the closing body 16 does not stop. Therefore, it is possible to prevent the closed body from malfunctioning while sufficiently securing the effective opening of the closed portion 3.

That is, in this embodiment, the effective opening of the closed portion 3 is set by setting the distance between the lower end of the closing body 16 and the optical system sensor in the fully opened state to H0 shorter than the allowable distance Ha. We have enough.

In such a setting, since the lower end of the closing body 16 in the fully opened state and the optical system sensor 11 are close to each other, depending on the material such as the color and gloss of the baseboard 21. In addition, there is a possibility that the optical sensor 11 of the obstacle detecting means 41 may erroneously output an obstacle detection signal based on the light reflected by the portion other than the reflector 27 of the skirting board 21.

However, until the elapsed time measured by the timer means 40 reaches the predetermined time, that is, until the distance between the lower end of the closing body 16 and the optical system sensor 11 becomes the allowable distance Ha. In addition, the optical system sensor 11 is
Even if an obstacle detection signal is erroneously output based on the light reflected by the portion other than the reflector 27, the control means 36 ignores the obstacle detection signal from the obstacle detection means 41, The closure 16 does not stop unintentionally, or
The stop state is not unintentionally maintained, and the malfunction of the closing body 16 can be prevented.

Accordingly, the effective opening of the closed portion 3 can be sufficiently ensured and the malfunction of the closing body 16 can be appropriately prevented without being restricted by the material of the baseboard 21 of the closing body 16.

As shown in FIGS. 2 and 6, the timer means 40 is operated by the operating means while the doors 4, 4 of the double door system 5 are opened outwardly. 31
Even if the closing operation section 33 is operated, the obstacle detecting means 41 operates reliably after a predetermined time, and as shown by a two-dot chain line in FIG. Body 16
Even if is unwound, the winding of the closing body 16 only needs to be loosened and swelled, and the entire closing body 16 is not unwound, so that damage to the closing body 16 can be prevented.

In the above embodiment, the structure in which the closing device is the shutter device 1 has been described.
For example, a door device, a blind device, a sliding wall device, a screen device, a smoke-proof hanging device, and the like may be used.

In each of the above embodiments, the closing body 16 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.
It is also possible to adopt a configuration that can be moved in an inclined direction or a configuration that can be moved in a combined direction of these.

Further, in any of the above embodiments, the closing body 16 has been described as a structure in which a number of slats 16a are connected to each other. However, for example, a structure in which a number of panels, pipes and sheet pieces are connected to each other is formed. Or a sheet formed by appropriately combining at least one of the slats, panels, pipes, and sheet pieces, or may be formed by a single sheet member, or a plurality of sheet members. May be connected to each other, or may be a simple plate.

In each of the above embodiments, the closing body 16 has been described as a structure capable of closing the entire closed portion 3, but for example, only a part of the closed portion 3 is partially closed. You may do it.

Further, in any of the above embodiments, the structure in which the closing body 16 is lowered by the driving force from the motor 35 has been described. However, the structure may be such that the closing body 16 itself is lowered by gravity or the like.

In each of the above embodiments, the baseboard 21 of the closing body 16 has been described as contacting the lower frame 6 when the closing body 16 is fully closed. Instead, the configuration may be such that the baseboard 21 is in direct contact with the floor surface 7.

Further, in each of the above embodiments, the timer means 40 for counting the time elapsed from the start of the movement of the closing body 16 in the fully closed state in the closing direction C has been described. Instead of the means 40, a distance for detecting at least one of a moving distance which is a moving amount from the fully opened state of the closing body 16 and a driving distance which is a driving amount of a driving means such as a motor 35 for moving the closing body 16. Detecting means is provided, and the control means 36 ignores the obstacle detection signal from the obstacle detecting means 41 until at least one of the moving distance and the driving distance detected by the distance detecting means reaches a predetermined distance. The same operation and effect can be obtained even if the closing body 16 performs a predetermined obstacle detection operation based on the obstacle detection signal from the obstacle detection means 41 after reaching the predetermined distance.

Here, as the distance detecting means, the closing body 16 is used.
That detects only the moving distance of the moving body, that detects only the driving distance of the driving means for moving the closing body 16,
Although it detects both the moving distance of 16 and the driving distance of the driving means, there are three.

In the distance detecting means for detecting both the moving distance of the closing body 16 and the driving distance of the driving means, the timing at which the obstacle detection signal from the obstacle detecting means 41 is made valid is set, for example. The one that has reached the predetermined distance first (the one that has been detected by the distance detection means first) may be prioritized, and the obstacle detection signal from the obstacle detection means 41 may be made effective at that timing. The obstacle detection signal from the obstacle detection unit 41 may be validated at the timing when the distance is reached (both are detected by the distance detection unit). Further, as the distance detecting means, for example, a motor
35 or a rotary encoder capable of detecting the rotation angle and the amount of rotation of the winding body 15, or a reed switch or the like capable of detecting the position of the baseboard 21 at the lower end of the closing body 16. It may be something.

Further, in any of the embodiments, the reflector 27 which is separated from and opposed to the optical system sensor 11 and becomes reflective when it comes into contact with an obstacle is a non-reflective member which is in a non-reflective state when normally closed. The mechanism structure for shifting from the possible state to the reflective state at the time of detecting an obstacle is arbitrary.For example, although not shown, the sensing body moves vertically upward or obliquely upward at the time of contact with an obstacle, The reflection state may be set in conjunction with a partial or total deformation. In addition, a reflector closing member such as a lid that is directly or indirectly linked to the sensor is provided on a reflector that is always opposed to the optical sensor 11 and that faces the sensor, and the reflector is in a non-reflective state when normally closed. When the obstacle is detected, the reflector is closed, and when the obstacle is detected, the reflector is closed from the closed state by the interlocking of the reflector blocking member based on the contact of the sensor with the obstacle. It may be made to be able to be reflected.

Further, in any of the embodiments,
Full-open detection means, such as a full-open detection switch, which can grasp the full-open state or the approximate full-open state of the close body 16, is provided, and only when the close body 16 starts closing movement from the full-open state (position) grasped by the full-open detection means. Alternatively, the timer means 40 may measure the time. Alternatively, the time may be measured only when the closing body 16 starts the closing movement from another predetermined timing, state, or position. Then, by counting the time only when the closing movement is started from the grasped predetermined state, the obstacle detection is ignored for the predetermined time only in that case, and the operation means 31 is not grasped, for example, during the closing. In the case where the closing movement is started from the stop state in the middle of closing due to the stop operation in the case of, for example, an obstacle being detected in the middle of closing, or the like, the obstacle detection can be made effective without timing.

[0061]

According to the first aspect of the present invention, the control means ignores the obstacle detection signal from the obstacle detection means until the elapsed time measured by the timer means reaches a predetermined time. Therefore, noise is likely to occur in the obstacle detection means and the like for a predetermined time after the start of movement, and the obstacle detection means erroneously outputs an obstacle detection signal until the elapsed time measured by the timer means reaches the predetermined time. Even if the output is performed, the closing body does not perform the predetermined obstacle detection operation, so that the malfunction of the closing body can be appropriately prevented.

According to the second aspect of the present invention, when the distance between the tip of the closing body and the optical system sensor in the fully opened state is set short in order to sufficiently secure the effective opening of the closed part. In, during the time elapsed by the timer means reaches the predetermined time, the optical system sensor,
For example, even if an obstacle detection signal is erroneously output based on light reflected by a portion other than the reflector at the tip of the closing body due to the proximity of the tip of the closing body and the optical system sensor, the control means Does not stop the closing body ignoring the obstacle detection signal, so that the tip of the closing body and the optical system sensor can be sufficiently close to each other. Malfunction can be appropriately prevented.

According to the third aspect of the present invention, the control means controls the obstacle detection means until at least one of the moving distance and the driving distance detected by the distance detection means reaches a predetermined distance. Since the object detection signal is ignored, noise is likely to occur even in the obstacle detection means or the like for a predetermined time after the movement starts, and until at least one of the moving distance and the driving distance detected by the distance detection means reaches the predetermined distance. In the meantime, even if the obstacle detection means erroneously outputs an obstacle detection signal, the closing body does not perform a predetermined obstacle detecting operation, so that the malfunction of the closing body can be appropriately prevented.

According to the fourth aspect of the present invention, the distance between the distal end of the closing body and the optical system sensor in the fully opened state is set to be short in order to sufficiently secure the effective opening of the closed part. In at least one of the moving distance and the driving distance detected by the distance detecting means, the optical system sensor is, for example, a closed body due to the proximity of the optical system sensor and the tip of the closed body until the predetermined distance is reached. Even if an obstacle detection signal is erroneously output based on reflected light reflected by a portion other than the reflector at the tip of the control unit, the control means ignores the obstacle detection signal and does not stop the closing body. , Because the tip of the closing body and the optical sensor can be sufficiently close to each other,
The malfunction of the closing body can be appropriately prevented while sufficiently securing the effective opening of the closed portion.

[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 perspective view of the same closing device.

FIG. 3 is a cross-sectional view of the closing device.

FIG. 4 is a cross-sectional view showing a lower end portion of a closing body of the closing device in a normal state.

FIG. 5 is a cross-sectional view showing a lower end portion of the closing body of the closing device in an abnormal state.

FIG. 6 is a diagram showing a positional relationship between a lower end portion of the closing body and the optical system sensor.

FIG. 7 is a flowchart for explaining the operation of the above closing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shutter device as a closing device 3 Closed part 11 Optical sensor 12 Light emitting part 13 Light receiving part 16 Closed body 27 Reflector 36 Control means 40 Timer means 41 Obstacle detecting means A Obstacle C Closing direction

Claims (4)

[Claims] 1. A movable closing body for closing a closed portion, and detecting whether or not an obstacle that hinders the movement of the closing body is located in the closed portion. An obstacle detection unit that outputs an obstacle detection signal when it is detected that the closed body is located; a timer unit that measures an elapsed time from the start of the movement of the closed body; and the timer unit measures time. Until the elapsed time reaches a predetermined time, the obstacle detection signal from the obstacle detection means is ignored, and after the elapsed time measured by the timer means reaches the predetermined time, the obstacle detection means And a control means for causing the closing body to perform a predetermined obstacle detection operation based on an obstacle detection signal from the closing device. 2. A closing body movable along a closed portion in at least a closing direction for closing the closed portion; and a closing body provided on the closing body side, wherein a tip of the closing body in the closing direction is provided. A reflector that can be reflected when detecting an obstacle that hinders the movement of the closing body, and is provided on the closed part side in a state facing away from the closing body side, and from the light emitting unit to the reflecting body An optical sensor that emits a detection light toward the optical sensor that outputs an obstacle detection signal when the reflected light reflected by the reflector is received by a light receiving unit; and the closing body faces the closing direction from a fully open state. Timer means for measuring the elapsed time from the start of the movement, and until the elapsed time measured by the timer means reaches a predetermined time, disregarding the obstacle detection signal from the optical system sensor, Timed by timer means And a control means for causing the closing body to perform a predetermined obstacle detection operation based on an obstacle detection signal from the optical system sensor after the elapsed time reaches the predetermined time. apparatus. 3. A movable closing body for closing a portion to be closed, and detecting whether or not an obstacle that hinders the movement of the closing body is located in the portion to be closed, and the obstacle is closed. An obstacle detection unit that outputs an obstacle detection signal when it is detected that the vehicle is located at the unit, and at least one of a moving distance of the closing body and a driving distance of a driving unit for moving the closing body is detected. A distance detecting unit, until at least one of the moving distance and the driving distance detected by the distance detecting unit reaches a predetermined distance, disregarding an obstacle detection signal from the obstacle detecting unit; After at least one of the moving distance and the driving distance detected at has reached the predetermined distance, a predetermined obstacle detection operation is performed on the closed body based on the obstacle detection signal from the obstacle detection means. Control means A closing device comprising: 4. A closing body movable along a closed portion in at least a closing direction for closing the closed portion, and a closing body provided on the closing body side, and a front end surface side of the closing body in the closing direction is the closed body. A reflector that can be reflected when detecting an obstacle that hinders the movement of the closing body, and is provided on the closed part side in a state facing away from the closing body side, and from the light emitting unit to the reflecting body An optical sensor that outputs an obstacle detection signal when the reflected light reflected by the reflector is received by the light receiving unit, and an optical sensor that outputs an obstacle detection signal, and the moving distance of the closing body and the moving of the closing body Distance detecting means for detecting at least one of a driving distance of the driving means for causing the optical system sensor to operate and at least one of the moving distance and the driving distance detected by the distance detecting means to reach a predetermined distance. Obstacles from After ignoring the detection signal and after at least one of the moving distance and the driving distance detected by the distance detecting means has reached the predetermined distance, the closing body is detected based on the obstacle detection signal from the optical sensor. And a control means for performing a predetermined obstacle detecting operation.