JP3337347B2 - Switch body safety device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an opening / closing body safety device,
For example, the present invention relates to a method of stopping the lowering of an overdoor (oversliding door) when the lower end of the overdoor comes into contact with an obstacle during the lowering of the overdoor.

[0002]

2. Description of the Related Art Conventionally, as this kind of opening / closing body safety device, for example, as described in Japanese Utility Model Laid-Open No. 5-71397, an obstacle detection sensor for detecting an obstacle at the lower end of an overdoor is disclosed. This obstacle detection sensor is configured by a transmitter that is contracted by the obstacle and detects the obstacle by a change in the internal air pressure, and a pressure switch that detects a pressure change in the transmitter and converts it into an electric signal, When the transmitter abuts against and is pressed against an obstacle in the process of lowering the overdoor, the transmitter contracts, and a pressure change inside the transmitter is detected by a pressure switch and converted into an electric signal. A configuration is known in which an output is output to a drive motor for lifting and lowering, the operation of the drive motor is stopped, and the lowering of the overdoor is stopped.

In the configuration described in the above publication, the obstacle detection sensor detects these as obstacles when they come into contact with a person or an object while the overdoor is descending, and also detects the obstacle at the floor of the opening. In order to detect this floor surface as an obstacle even when it comes into contact with the surface, that is, the obstacle detection sensor detects the obstacle and stops the overdoor at the lowermost lower limit position to stop the lower door of the overdoor from the floor surface. The transmitter of the obstacle detection sensor is pressed on the floor and squashed vertically in the vertical direction each time the opening is opened and closed, so that the transmitter is squashed. The deformation habit of the state is attached, and the restoration stroke of the transmitter becomes small. A gap is formed between the lower end and the floor surface of the emitter, can not be sufficiently close the opening, there is a problem that.

Further, when the transmitter of the obstacle detection sensor is crushed on the floor, the internal pressure of the transmitter increases, and the transmitter cannot be restored by the atmospheric pressure even if the transmitter is separated upward from the floor. However, there is a problem that the pressure switch cannot detect the pressure change in the transmitter and convert it into an electric signal even if the pressure switch contacts an obstacle.

Further, a limit switch is provided at a lower lower limit position of the overdoor, and the operation of the drive motor for raising and lowering the overdoor is stopped by turning on the limit switch at the overdoor lowered to the lower limit position. Then, at a site where the floor surface is inclined, a gap is formed between the lower end portion of the transmitter and the floor surface, so that the opening cannot be sufficiently closed, and the configuration becomes complicated.

[0005] The present invention has been made in view of such a point, and when the opening and closing body is lowered, the gap between the lower end of the opening and closing body and the floor can always be reliably closed. Even when there is a gradient, the gap between the lower end of the opening and closing body and the floor surface can be reliably prevented, and the obstacle detection sensor does not need to be significantly elastically deformed, and is crushed by the obstacle detection sensor Can be reliably prevented from becoming deformed,
If an obstacle comes in contact with the opening / closing body while it is descending, the opening / closing body that detects this obstacle can be stopped without fail. Therefore, the reliability and safety of closing the opening with a simple configuration can be ensured. It is an object of the present invention to provide an opening / closing body safety device with high reliability.

[0006]

Closing body safety device according to claim 1, wherein SUMMARY OF THE INVENTION comprises a vertically movable closing body for opening and closing the opening, provided at the lower end of the closing body, an obstacle during downward movement of the closing body in a cylindrical obstacle detection sensor for detecting an obstacle in the change in air pressure inside the elastically deformed in contact, detachably provided in the lower portion of the obstacle detection sensor, the floor of the opening
An elastically deformable gap closing body that abuts on a surface and closes a gap between a lower end portion of the opening / closing body and a floor surface of the opening.

[0007] closing body safety device according to claim 2, wherein the opening
A vertically movable opening and closing body that opens and closes, and a lower end of the opening and closing body
It is provided and comes into contact with obstacles when the
A cylindrical obstacle that deforms and detects obstacles by changes in internal air pressure
The obstacle detection sensor and the lower part of this obstacle detection sensor
It is provided detachably, and is in contact with the floor surface of the opening,
A bullet closing between the lower end of the opening / closing body and the floor of the opening.
And a gap closing body capable of sexual deformation.
Is formed in a plate shape by an elastic member, the upper end of which is
Removably attached to the lower part of the harmful object detection sensor
And its lower end protrudes below the obstacle detection sensor.
Is what you do.

[0008] closing body safety device according to claim 3, wherein the opening
A vertically movable opening and closing body that opens and closes, and a lower end of the opening and closing body
It is provided and comes into contact with obstacles when the
A cylindrical obstacle that deforms and detects obstacles by changes in internal air pressure
The obstacle detection sensor and the lower part of this obstacle detection sensor
It is provided detachably, and is in contact with the floor surface of the opening,
A bullet closing between the lower end of the opening / closing body and the floor of the opening.
And a gap closing body capable of sexual deformation.
Is formed in an approximately U-shaped cross section by an elastic member,
Both ends fit into the lower part of the obstacle detection sensor
The curved portion is detachably fixed to the obstacle detecting sensor.
It protrudes downwards.

[0009]

In the opening / closing body safety device according to the first aspect, when the opening / closing body descends, the gap closing body descends prior to the obstacle detection sensor, and elastically deforms on this floor when it comes into contact with the floor. The gap between the lower end of the opening and closing body and the floor of the opening is closed by the gap closing body. At this time, even if the floor has a slope,
The gap closing member elastically deforms and abuts along the floor surface, so that the gap between the lower end portion of the opening / closing body and the floor surface of the opening is reliably closed regardless of the gradient of the floor surface.

Further, the gap closing member abuts on the floor surface and is elastically deformed, and the obstacle detecting sensor is elastically deformed on the floor surface via the gap closing body, so that the obstacle detecting sensor can be used. The internal air pressure changes and the floor as an obstacle is detected. Then, the obstacle detection sensor outputs the signal to a device that converts the signal into a stop signal for stopping the lowering of the opening / closing body.

At this time, the obstacle detection sensor only detects an obstacle and the gap between the lower end of the opening and closing body and the floor of the opening is formed by a gap closing body. The floor surface as an obstacle is detected without undergoing large elastic deformation so as to close the gap between the lower end of the body and the floor surface of the opening.

When the obstacle detection sensor comes into contact with the obstacle via the gap closing member while the opening / closing body is descending, the obstacle detection sensor is elastically deformed by the obstacle, and
The air pressure in the interior changes and an obstacle is detected .

[0013]

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

Reference numeral 1 denotes left and right guide rails disposed opposite to the left and right of the opening 2. The left and right guide rails 1 extend vertically from a vertical rail 3 and an upper end of the vertical rail 3 backward. It has a front-rear horizontal rail 4 protruding toward it. The left and right vertical rails 3 are fixed to the left and right skeletons 3a of the opening 2, respectively, and the left and right horizontal rails 4 are fixed to horizontal fixing frames 4a suspended from the ceiling. .

An overdoor 5 as an opening / closing body for opening and closing the opening 2 is provided between the left and right guide rails 1 via a plurality of guide rollers (not shown) so as to be movable up and down. The overdoor 5 is configured by stacking a plurality of door panels 6 in the left-right direction in the up-down direction, and each door panel 6 is rotatably connected to each other. Further, mounting shafts 8 are provided at both ends in the left-right direction of the door panel 7 at the lowermost end of the overdoor 5, respectively.

The left and right brackets 9 are positioned above the vertical rail portions 3 of the left and right guide rails 1 and fixed to each other. A winding drum 11 is fixed to the left and right portions of the winding shaft 10 at positions above the left and right mounting shafts 8.

The left and right winding drums 11 have one ends of left and right wires 12 for raising and lowering the overdoor 5 fixed thereto, respectively, and the other ends of the left and right wires 12 are connected to the left and right mounting drums. Each is fixed to the shaft 8. Then, the overdoor 5 is moved up and down by the left and right wires 12 that are wound and unwound by the forward and reverse rotation of the left and right winding drums 11, and the opening 2 is opened and closed.

A drive motor 13 for forward / reverse rotation is disposed and fixed above the vertical rail portion 3 of the one guide rail 1, and an output shaft of the drive motor 13 has an interlocking medium 13
One end of the winding shaft 10 is interlocked and connected via a. In addition, this drive motor
A control panel 14 for controlling the operation of 13 is disposed and fixed.

The control motor 14 controls the drive motor 13 to stop the forward / reverse rotation and the forward / reverse rotation. The rotation and forward / reverse rotation are stopped, and the overdoor 5 is stopped from moving up and down.

Next, a left-right mounting recess 15 is formed at the lower end of the door panel 7 at the lowermost end of the overdoor 5 over the entire length of the lower end of the door panel 7. The connection frames 16 in the directions are fitted and fixed integrally. The connecting frame 16 has a fitting groove in the left-right direction which is formed at the lower end of the connecting frame so as to be spaced apart in the front-rear direction and in parallel.
17 respectively. The front and rear fitting grooves 17 have a flat groove 18 in the left-right direction and a lower surface opened at an intermediate portion in the front-rear direction of the flat groove 18 and have a width smaller than the width of the flat groove 18 and a flat groove.
It has a dovetail shape with a small diameter groove 19 communicating with 18.

A sealed air tube type obstacle detection sensor 20 which is elastically deformable and detects an obstacle by a change in internal air pressure is connected to the connection frame 16. This obstacle detection sensor 20 is a transmitter that detects an obstacle based on a change in internal air pressure when contracted by the obstacle.
It comprises an air switch 22 for detecting a pressure change in the transmitter 21 and converting it into an electric signal.

The transmitter 21 is made of an elastically deformable material such as a rubber material, and has a lower end formed in an arc shape with a length corresponding to the length in the left-right direction of the lower end of the door panel 7 at the lowermost end. It has a main body 23 formed in a curved polygonal hollow cylindrical shape, and a mounting plate 24 integrally formed along the upper end of the main body 23 and mounted to the connection frame 16.

On both sides in the front-rear direction of the main body 23, a ridge 26 having a bent concave portion 25 on an inner wall opposed to the longitudinal direction of the main body 23 at an intermediate portion in the vertical direction is integrally formed. In addition, a side cap 28 having a sealed end plate 27 is integrally formed at both ends in the longitudinal direction of the main body 23, and the inside thereof is closed in an airtight state. The main body 23 comes into contact with an obstacle, so that the main body 23 is elastically deformed in the up-down direction at the obstacle from the opposed bent recess 25 with respect to the mounting plate 24 at the obstacle. .

Each of the fitting grooves of the connecting frame 16 is formed on the upper portion of the mounting plate 24 so as to face both ends in the width direction.
A fitting ridge 29 that fits into the flat 17 is integrally provided in parallel with each other, and the fitting ridges 29 at both ends thereof engage with the flat plate portion 30 and the small-diameter groove portion 19 that fit into the flat groove portion 18. Small diameter ridge 31
And is formed in a substantially T-shape. Then, each fitting ridge of the mounting plate 24 is fitted into each fitting groove 17 of the connection frame 16.
The main body 23 having the mounting plate 24 protrudes downward from the lower end of the door panel 7 at the lowermost end.

Further, one end of the main body 23 is
A communication hole 32 communicating with the inside of the body 23 is formed. One end of an air tube 33 communicating with the inside of the main body 23 is inserted into the communication hole 32, and the other end of the air tube 33 is connected to the air switch 22. Is connected to the The air switch 22 is attached to a bracket 34 fixed to a lower end of one side of the door panel 7 at the lowermost end.

Next, on the lower part of the main body 23 of the transmitter 21, that is, below the ridge 26 on one side of the main body 23, a connecting ridge is provided over the length of the lower part of the main body 23.
The connecting ridge 35 is formed integrally with the lower end of the overdoor 5 and the floor surface 36 of the opening 2. Elastically deformable gap closing body for closing between
37 is fixed.

The gap closing member 37 is formed of an elastic member such as a rubber plate and has a predetermined width and is elongated in the left-right direction, that is, formed in a plate shape having the same length as the length of the transmitter 21. 38 is fitted and fixed to the connecting ridge 35, and the obstacle detecting sensor
The lower end of the free end 39 of the main body 23 is located below the ridge 26 on the other side of the main body 23. It has become.

The gap closing member 37 is elastically deformed so that its free end 39 descends before the transmitter 21 and abuts against an obstacle and a floor surface 36 so as to cover the lower portion of the transmitter 21. Then, the space between the floor 36 and the floor 36 is closed at the bent portion.

Next, the code reel bracket 40 is located above the vertical rail portion 3 of the other guide rail 1.
The cord reel 41 is attached to the cord reel bracket 40, and the lower end of the cord 42 to be wound and unwound on the cord reel 41 is the air switch.
This code 42 is attached to the bracket 34
The air switch 22 is connected to the lower end of the air switch. Also, a relay cable 43 is attached to the cord 42 of the cord reel 41.
Through the control panel 14.

Next, the operation of the above embodiment will be described.

When the drive motor 13 is driven by the control action of the control panel 14, the winding shaft 10 is interlockedly rotated in the direction of rewinding the wire 12 via the interlocking medium. The wire 12 is rewound from the take-up drum 11, respectively, and the overdoor 5 is lowered from the left and right horizontal rails 4 to the left and right vertical rails 3 through the respective guide rollers. The opening 2 is closed from the rail 3 onto the floor 36.

When the overdoor 5 is lowered, the plate-shaped gap closing member 37 is connected to the transmitter 21 of the obstacle detection sensor 20.
The free end 39 of the lower end thereof abuts on the floor surface 36, and the gap closing body 37 is elastically deformed and curved while the tip end of the free end 39 is supported on the floor surface 36. And
The gap between the lower end of the overdoor 5 and the floor surface 36 of the opening 2 is closed by the gap closing body 37.

At this time, even if the floor surface 36 has a gradient, the gap closing body 37 elastically deforms and abuts along the floor surface 36, so that the lower end of the overdoor 5 regardless of the gradient of the floor surface 36. The space between the opening and the floor surface 36 of the opening 2 is securely closed.

The gap closing member 37 abuts on the floor surface 36 and is elastically deformed.
The transmitter 21 of the obstacle detection sensor 20 is pressed by 36, and the transmitter 21 is elastically deformed in the vertical direction from each bent concave portion 25 of the ridge 26 on both sides and contracts. Then, the air pressure inside the transmitter 21 changes, that is, when the main body 23 of the transmitter 21 is contracted, the air inside the main body 23 is compressed, and the compressed air flows through the air tube 33 from the main body 23 of the transmitter 21. The pressure change is sent to the air switch 22 via the air switch 22. The air switch 22 detects a pressure change inside the transmitter 21 and converts the pressure change into an electric signal.

The converted electric signal is output to the control panel 14, and the control panel 14 is operated. At the same time, a stop signal is output from the control panel 14 to the drive motor 13, so that the operation of the drive motor 13 is stopped. The rotation of the winding shaft 10 in the wire rewinding direction is stopped, and the lowering of the overdoor 5 is stopped.

Therefore, the floor surface 36 is interposed via the gap closing member 37.
The transmitter 21 of the obstacle detection sensor 20 is pressed, and the air pressure inside the transmitter 21 changes, whereby it is detected that the obstacle detection sensor 20 abuts on the floor surface 36, and the overdoor 5 descends. Is stopped.

At this time, the obstacle detection sensor 20 only detects an obstacle, and the gap between the lower end portion of the overdoor 5 and the floor surface 36 of the opening 2 is closed by the gap closing body 37. The floor surface 36 is detected by the object detection sensor 20 without greatly elastically deforming the transmitter 21 so as to close the gap between the lower end portion of the overdoor 5 and the floor surface 36 of the opening 2.

For this reason, the transmitter 21 of the obstacle detection sensor 20 does not have a deformation habit of the transmitter 21 being largely elastically deformed in the vertical direction and being crushed, and the restoration stroke of the transmitter 21 is reduced. At the site where the floor 36 has a gradient, the gradient is absorbed and the lower end of the transmitter 21, that is, the overdoor 5
There is no gap between the lower end of the floor and the floor surface 36, and the opening 2 is sufficiently closed.

Next, while the overdoor 5 is descending, the transmitter of the obstacle detection sensor 20 is interposed via the gap closing member 37.
When the object 21 comes into contact with an obstacle other than the floor surface 36, the transmitter 21 of the obstacle detection sensor 20 is elastically deformed by the obstacle, and the air pressure inside the transmitter 21 changes to detect the obstacle. Then, the lowering of the overdoor 5 is stopped in the same manner as when the opening 2 is closed by the overdoor 5. Therefore, safety during the lowering of the overdoor 5 is ensured.

Next, in the above embodiment, the gap closing body 37 is formed in a plate shape by an elastic member, and the upper end thereof is fixed to the lower part of the transmitter 21 of the obstacle detection sensor 20, and the lower end thereof is free. Although a case has been described in which the end 39 passes under the transmitter 21 and projects obliquely toward the opposite side toward the upper end, the gap closing member 37 is, for example, as shown in FIG. It may be formed in a shape and fixed to the lower part of the transmitter 21 of the obstacle detection sensor 20.

In this case, a connecting ridge 35 is provided along the longitudinal direction of the lower part of the main body 23 at the lower part on both sides in the front-rear direction of the transmitter 21, that is, below the ridge 26 on both sides of the main body 23. While each is formed integrally, the gap closing body 37 is
It is formed in a substantially U-shaped cross section by an elastic member, and the upper ends of the opposing side plate portions 44 are fixed to the connecting ridges 35 on both sides of the transmitter 21, respectively.
A series of curved portions 45 formed between lower end portions of 44 project below the transmitter 21. Other configurations are the same as those in the above-described embodiment, and thus description thereof is omitted.

With this configuration, when the overdoor 5 is lowered, the gap closing member 37 having a substantially U-shaped cross section is lowered before the transmitter 21 of the obstacle detection sensor 20 and the curved portion 45 at the lower end thereof. Abuts the floor surface 36, and while the curved portion 45 is supported by the floor surface 36, the gap closing body 37 is elastically deformed so that the transmitter 21 of the obstacle detection sensor 20 enters the gap closing body 37. The lower end of the overdoor 5 and the floor of the opening 2 at the gap closing member 37
36 is closed.

In each of the above embodiments, the upper end portion of the plate-shaped gap closing member 37 and the side plate portion of the gap closing member 37 having a substantially U-shaped cross section are used.
Although the description has been given of the case where the mounting ridges 38 at both upper ends of the 44 are fitted to the connecting ridges 35 of the transmitter 21 of the obstacle detection sensor 20 and are detachably fixed thereto, this plate-shaped gap closing member 37 is used.
The mounting ridges 38 at both upper ends of the side plate portion 44 of the upper end portion and the gap closing body 37 having a substantially U-shaped cross section are connecting ridges 35 of the transmitter 21.
May be slidably fitted in the fitting groove formed in the above and fixed with an adhesive.

Next, the gap closing member 37 is, for example, shown in FIG.
As shown in the figure, the obstacle detection sensor 20 transmitter
You may make it form integrally with the lower part of 21. In this case, the transmitter 21 forms the sealed main body 46 into a rectangular cross section so as to be elastically deformable by an elastic member,
Reference numeral 37 denotes a hollow cylindrical member having a rectangular cross section formed of an elastic member, with the lower plate 47 serving as a partition below the main body 46.
The gap closing body 37 is formed in a shape that is easily elastically deformed in the vertical direction by the side plates 48 that are thinner than the main body 46 of the transmitter 21. Other configurations are the same as those in the above-described embodiment, and thus description thereof is omitted.

With this configuration, when the overdoor 5 is lowered, the gap closing member 37 formed in a hollow cylindrical shape is used.
Is lowered prior to the transmitter 21 of the obstacle detection sensor 20, the side plate 48 located at the lower end thereof abuts the floor surface 36, and the lower side plate 48 is supported by the floor surface 36 while the floor plate 36 is supported by the floor surface 36. The gap closing body 37 is pressed by 36 and elastically deforms into a flat shape, and the gap between the lower end of the overdoor 5 and the floor surface 36 of the opening 2 is closed by the gap closing body 37.

[0046]

According to the present invention, when in the lowered opening closed field can always be reliably placed between the lower end and the floor surface of the opening and closing member, even in the field where there is a gradient in the floor A gap can be reliably prevented between the lower end of the opening / closing body and the floor surface,
There is no need to significantly elastically deform the obstacle detection sensor to close the lower end of the opening / closing body and the floor, and it is possible to reliably prevent the obstacle detection sensor from being deformed when it is crushed. In the event that an obstacle comes in contact with the opening / closing body while the opening / closing body is descending, the lowering of the opening / closing body that has detected this obstacle can be reliably stopped. An open / close body safety device having high reliability can be provided .

[Brief description of the drawings]

FIG. 1 is a perspective view of an opening / closing body safety device according to an embodiment of the present invention, in which a part of an obstacle detection sensor is omitted.

FIG. 2 is a side view of the same mounting state.

FIG. 3 is an explanatory view showing an operation state of the clearance closing member.

FIG. 4 is a front view showing an elevating mechanism of the opening / closing body having the obstacle detection sensor.

FIG. 5 is a side view of the same.

FIG. 6 is a side view of an obstacle detection sensor showing another embodiment.

FIG. 7 is a side view of an obstacle detection sensor showing a related technique .

[Description of Signs] 2 Opening 5 Opening / closing body 20 Obstacle detection sensor 36 Floor surface 37 Clearance closing body

Claims (3)

(57) [Claims] 1. A and vertically movable closing body for opening and closing the opening, provided at the lower end of the closing body, an obstacle by a change in air pressure in elastically deformed in contact during lowering of the closing member with an obstacle a cylindrical obstacle detection sensor for detecting the provided detachably on the lower portion of the obstacle detection sensor,
An opening / closing body safety device comprising an elastically deformable gap closing body that abuts on a floor surface of the opening and closes a lower end of the opening / closing body and a floor surface of the opening. 2. An openable and closable opening / closing body for opening and closing an opening, and a lower end of the opening / closing body.
Elastic deformation due to contact with obstacles and obstacles due to changes in internal air pressure
A cylindrical obstacle detection sensor that detects an object, and is provided detachably below the obstacle detection sensor,
The lower end of the opening / closing body contacts the floor surface of the opening and the
Elastically deformable gap closure that blocks between the opening and the floor surface
Body, the gap closing body is formed in a plate shape by an elastic member,
The upper end fits into the lower part of the obstacle detection sensor and is attached and detached
And the lower end thereof is the obstacle detection sensor.
An opening / closing body safety device characterized by protruding downward from the body. 3. An openable and closable body for opening and closing an opening, and a lower end of the openable and closable body.
Elastic deformation due to contact with obstacles and obstacles due to changes in internal air pressure
A cylindrical obstacle detection sensor that detects an object, and is provided detachably below the obstacle detection sensor,
The lower end of the opening / closing body contacts the floor surface of the opening and the
Elastically deformable gap closure that blocks between the opening and the floor surface
And the gap closing body is formed in a substantially U-shaped cross section by an elastic member.
And the opposite ends are below the obstacle detection sensor.
And is removably secured by fitting into the
An opening that protrudes below the harmful substance detection sensor.
Closure safety device.