KR20180058145A - A cleaner device for photosensor - Google Patents

Abstract

The present invention relates to a device for cleaning an optical sensor of a screen door, and has an objective to prevent the malfunction of the screen door due to foreign substances or the like in such a manner that cleaning operation is carried out while a cleaning part moves up and down on the surface of a sensor by the driving force of a driving unit so that the sensing operation of the sensor is accurately and precisely performed without being interfered by the foreign substances or the like. To this end, the present invention includes: a sensor (2) formed at one side of a screen door and controlling the opening and closing of the screen door according to sensing; a driving unit (10) provided at one side of the screen door or the sensor (2) so as to provide driving force; and a cleaning part (20) for coming into close contact with the sensor (2) and cleaning the surface of the sensor (2) by the driving force of the driving unit (10) so as to enable the accurate and precise sensing of the sensor (2) without malfunction due to the interference by foreign substances.

Description

A cleaner device for photosensor of screen door

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical sensor cleaner device for a screen door, and more particularly, to a cleaning device for cleaning a surface of a sensor by lifting the surface of the sensor by a driving force of a driving part, And more particularly to an optical sensor cleaner device of a screen door that prevents malfunction of a screen door due to foreign substances or the like.

In general, the platform screen door is a platform safety system as a device that is opened and closed by interlocking with a door of a train by installing a fixed wall (screen) and a movable door which are isolated from the railway on a subway or light rail platform. In addition, noise, dust and strong winds caused by electric trains can be reduced, and smoke emission effect can be achieved when a train is fired.

This screen door has been applied to subway stations such as France, Japan and Hong Kong since it was first introduced in England. It was installed in a part of Gwangju subway station opened in April 2005 and installed in all subway history in Korea .

The facility between the screen door and the train can not be installed in accordance with Article 14 of the Railway Construction Regulations. Therefore, an empty space having a width of 400 mm or more is generated at the edge between the screen door and the electric motor vehicle. If people are trapped in these podiums, a very dangerous situation can result. That is, when the entrance door of the train and the screen door are closed in a situation where the user can not ride on the train after passing through the screen door, the user is caught between them.

In order to solve the above problem, an infrared sensor or an image sensor is installed on the screen door to detect the movement of the user.

In addition, due to the nature of the installation place of the screen door, foreign substances such as dust or dust are adsorbed on the surface of the sensor by the infrared sensor or the image sensor, and foreign substances such as dust, .

Accordingly, the surface of the sensor installed on the screen door is periodically or optionally cleaned or wiped by the operator.

However, there is a risk of a safety accident such as an injury to an operator due to the entry of an electric vehicle during the work of cleaning the surface of the sensor by the operator.

This is an actual accident, and there is a problem in that a safety accident that a worker dies due to the entry of an electric vehicle during the cleaning work of the sensor occurs on May 28, 2016, as in the case of the accident of the No. 2 line.

In addition, although the conventional art provided up to now provides a device or equipment for cleaning the entire screen door, such a screen door cleaning device or equipment can not smoothly clean the surface of the sensor formed on one side of the screen door, , The worker performs the cleaning work one by one, thereby posing the problem of the vulnerability of the safety accident.

In addition, since the infrared sensor or the image sensor provided so far only senses the local region, the sensory effect is deteriorated according to the physical structure or the situation, and therefore, it is possible to improve the sensibility when the sensor is out of the sensing range, such as a baby carriage, a handbag, There is a problem in that a safety accident often occurs because the sensing is not performed.

Korean Patent Publication No. 10-711098 (issued April 24, 2007) Korean Patent Publication No. 10-1162728 (issued on July 5, 2012)

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems, and it is an object of the present invention to provide a cleaning device and a cleaning method thereof, So as to prevent a malfunction of the screen door due to foreign substances or the like, and an object thereof is to provide an optical sensor cleaner device of a screen door.

According to an aspect of the present invention, there is provided a display device including a sensor for controlling opening and closing of a screen door by sensing a screen door, A driving unit provided at one side of the screen door or the sensor to provide a driving force; And a cleaning unit which is in close contact with the surface of the sensor and cleans the surface of the sensor by the driving force of the driving unit so as to perform accurate and precise sensing of the sensor without any malfunction due to interference by foreign matter .

In the present invention, the driving unit may include: a motor for providing forward and reverse rotational forces; A roll fixed by an extension shaft of the motor and rotated by a forward and reverse rotation force of the motor; And a wire partly wound around the roll and each of the opposite ends being positioned at each of both ends of the sensor so that the cleaning part elevates and descends along the rotation direction of the roll to clean the surface of the sensor.

In the present invention, it is preferable that each of both ends of the wire includes a weight to support the wire so that smooth up and down movement is not caused when the wire is lifted and lowered along the rotation direction of the roll.

In the present invention, the driving unit may include: a motor for rotating forward and backward; A roll including a first roll positioned at an upper end of the sensor and a lower roll configured at a lower end of the sensor; And a wire configured to swing between an upper end roll and a lower end roll of the roll so as to prevent the sensor from interfering with the sensor.

In the present invention, it is preferable that the cleaning part includes a cleaning cloth which is brought into close contact with the surface of the sensor and performs a cleaning operation by the driving force of the driving part.

In the present invention, it is preferable that the cleaning portion includes a spring that provides an elastic force to maintain the state in which the cleaning cloth firmly adheres to the surface of the sensor.

In the present invention, it is preferable that the position sensor includes a position sensing sensor for controlling a cleaning range of the sensor in the cleaning unit by a driving force provided by the driving unit.

In the present invention, preferably, the position sensor includes a first sensor or a second sensor configured to sense a washing range of the washing unit, respectively, at a lower end or an upper end of the sensor or both.

In the present invention, the sensor is an optical sensor which is configured to stand upright at a predetermined height from the ground, and includes a light emitting unit that emits light at one end and a light receiving unit that receives light emitted from the light emitting unit to generate a sensing signal desirable.

According to the present invention, the cleaning operation is carried out while the cleaning portion lifts the surface of the sensor by the driving force of the driving portion, so that the sensing action of the sensor is precisely and precisely performed without being interfered by foreign matter or the like, .

1 is a schematic perspective view of a screen door according to a first embodiment of the present invention, in which a cleaner device is mounted.
2 is a schematic side view of a screen door according to a first embodiment of the present invention, in which a cleaner device is mounted.
3 is a schematic plan view of a screen door according to a first embodiment of the present invention in which a cleaner device is mounted.
4 is a schematic perspective view of a cleaner apparatus according to a second embodiment of the present invention;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

≪ Embodiment 1 >

1 to 3, the cleaner apparatus of the first embodiment includes a driving unit 10 formed on one side of a screen door 1 and a driving unit 10 disposed on one side of the sensor 2 formed on one side of the screen door 1 (Not shown). And a position sensing sensor 30 for sensing the cleaning range of the cleaning unit 20. [

The driving unit 10 is a means for providing a driving force to the washing unit 20 to wash the sensor surface through the washing unit 20.

The driving unit 10 includes a motor 12 that provides a forward and reverse rotational force, a roll 14 that is fixed to an extension shaft of the motor 12 and rotates according to forward and reverse rotational forces of the motor 12, A wire 16 which is wound around the roll 14 and moves up and down according to the rotating direction of the roll 14 which is rotating in the forward and reverse directions and the wire 16 which is provided at both ends of the wire 16, And a weight 18 for supporting the wire 16 so that it can move smoothly.

The motor 12 is a BLDC motor for providing accurate forward and reverse rotational force. Of course, the present invention is not limited thereto, and any motor capable of smoothly lifting and lowering the wire 16 through providing positive and negative torque may be used.

The roll 14 is a means for receiving the forward and reverse rotational forces of the motor 12 and supporting the wire 16 wound up in the forward and reverse directions so that the wire 16 can be lifted and lowered.

The wire 16 is partly wound on the roll 14 and both ends of the wire 16 are positioned at both ends of the sensor 2 and are elevated and lowered reciprocally according to the forward and reverse directions of the roll 14 . In this case, the washing unit 20 is formed at one end of the wire 16 so that the washing unit 20 is lifted and lowered at one end of the sensor 2 to perform the washing operation.

The weights 18 are formed at both ends of the wire 16 to support the wire 16 in a state of being firmly wound on the roll 14, So that the wire 16 is smoothly lifted and lowered without causing slippage. Of course, depending on the case, the weight 18 may be replaced with, or omitted in some cases, means for allowing the wire 16 to smoothly move up and down.

In addition, any one of the weights 18 may be provided with a cleaning unit 20 to support the sensor 20 so that the sensor 20 can be lifted up smoothly while the sensor 2 is being cleaned.

The cleaning unit 20 is installed in any one of the wire 16 and the weight 18 of the driving unit 10 and moves up and down according to the elevation of the wire 16 or the weight 18, To clean the surface.

The cleaning part 20 includes a wire 16 or a cleaning cloth 22 formed on one side of the weight 18.

The cleaning cloth 22 is a means for substantially cleaning the surface of the sensor 2 while being kept in close contact with the surface of the sensor 2 and ascending and descending by the driving force provided by the driving unit 10. [

The cleaning cloth 22 is made of rust to clean the surface of the sensor 2. Of course, the present invention is not limited thereto, and any means can be used as long as it can facilitate cleaning depending on the type or material of the sensor 2. [ For example, a sponge.

The washing unit 20 includes a spring 24 for supporting the washing cloth 22 so as to stably adhere to the surface of the sensor 2.

The spring 24 is a means for providing an elastic force to the cleaning cloth 22 between the cleaning cloth 22 and the wire 16 or the weight 18. Of course, the spring 24 may be any means that maintains the state in which the cleaning cloth 22 stably adheres to the surface of the sensor 2 by providing a smooth elastic force to the cleaning cloth 22 . For example, leaf springs, torsion springs, and the like.

The position sensing sensor 30 senses the position of the washing unit 20 ascending and descending through the driving unit 10 to limit the washing range of the sensor 2, Is carried out.

The position sensing sensor 30 includes first and second sensors 32 and 34.

That is, the first sensor 32 senses the lower limit point of the sensor 2 and the second sensor 34 senses the upper limit point of the sensor 2, Ensure that the work is performed smoothly.

In this case, the position sensing sensor 30 is constituted by a limit switch. Of course, the present invention is not limited to this, and any means can be used as long as it can stably sense the lifting height of the cleaning cloth 22 of the cleaning part 20. [

As a matter of course, the position sensing sensor 30 may be omitted. In this case, the rotation speed of the motor 12 of the driving unit 10 may be limited to limit the height of the cleaning unit 20.

The sensor 2 is preferably composed of an optical sensor. That is, a light emitting portion is formed at one end of the screen door and a light receiving portion is formed at the other end, and a cleaner device is formed on the surface of each of the light emitting portion and the light receiving portion.

In addition, the sensor 2 preferably has a height of 1500 to 2000 mm on the ground.

The operation of the optical sensor cleaner device of the screen door constructed as described above will be described below.

First, the cleaning cloth 22 of the cleaning portion 20 is formed on each of the surfaces of the sensor 2 including the light emitting portion and the light receiving portion formed at both ends of the screen door. In this case, the cleaning cloth 22 is configured at the top of the sensor 2, as shown.

In this case, the wire 16 or the weight 18, which supports the cleaning cloth 22, may be disposed on the lower end of the sensor 2, Is configured so as not to interfere with the sensing action of the sensor (2).

If the control signal of the control unit (not shown) is transmitted to the driving unit 10 in a state where the cleaning cloth 22 is positioned at the upper end of the sensor 2 as described above, ).

When the roll 14 is rotated in the normal direction by the motor 12 in this way, the wire 16 wound on the roll 14 is rotated in the forward rotation direction, that is, 22 are lowered.

At this time, since the weights 18 are formed on both ends of the wire 16, the wire 16 does not slide on the roll 14, and the downward movement is smoothly performed.

That is, the cleaning cloth 22 is lowered together with the weight 18 formed at one end of the wire 16, and the surface of the sensor 2 is cleaned by the cleaning cloth 22, And an alternating action is performed in which the weight 18 located at the other end ascends.

When the descending washing cloth 22 is sensed by the first sensor 32 of the position detecting sensor 30 at the lower end portion, the detection signal of the first sensor 32 is transmitted to the driving unit 10, The motor 12 of the driving unit 10 provides a reverse rotation force after stopping.

The cleaning cloth 22 is lifted up by the reverse rotation of the motor 12 to clean the surface of the sensor 2 and the second sensor 34 formed at the upper end of the sensor 2 When the cleaning cloth 22 is sensed, the sensing signal of the second sensor 34 is transmitted to the driving unit 10, so that the driving force of the driving unit 10 is stopped.

Therefore, by performing the cleaning operation while the cleaning unit 20 lifts the surface of the sensor 2 by the driving force of the driving unit 10, the sensing action of the sensor 2 is prevented from being interfered by foreign matter or the like, So that malfunction of the screen door due to foreign substances or the like can be prevented.

In addition, due to the accurate and precise action of the screen door, the operator does not need to perform the cleaning operation of the sensor 2 as in the prior art, thereby preventing the occurrence of a safety accident such as an operator's death.

≪ Embodiment 2 >

The same reference numerals are used for the same components as those in the first embodiment, and a detailed description thereof will be omitted.

4, the driving section 10 constituted in the optical sensor cleaner apparatus of the screen door of the second embodiment includes a motor 12, a roll 14 and a wire 16, and the roll 14 Is composed of an upper roll 142 formed at the upper end of the sensor 2 and a lower roll 144 formed at the lower end of the sensor 2. The wire 16 is connected to the upper and lower rolls 142, (144). In this case, any one of the upper and lower rolls 142 and 144, for example, the upper roll 142 is fixed to the extension axis of the motor 12. [

Accordingly, when the upper roll 142 is rotated by the forward and reverse rotational force provided by the motor 12, the lower roll 144 is interlocked via the wire 16 pivoting the upper roll 142 One end of the wire 16 performs a lifting action.

In this case, the cleaning unit 20, that is, the cleaning cloth 22, maintains the state configured on one side of the wire 16, so that the wire 16 lifting and lowering between the upper and lower rolls 142, So that the surface of the sensor 2 is cleaned.

At this time, the wire 16 is not positioned on the front surface of the sensor 2 but is disposed at a position spaced apart from the sensor 2, and the cleaning cloth 22 formed on one side of the wire 16 is disposed on the surface of the sensor 2 So that the wire 16 does not interfere with the sensing action of the sensor 2 by maintaining the contact state.

The above description is only one embodiment for implementing the optical sensor cleaner device of the screen door, and the present invention is not limited to the above embodiment. It will be understood by those skilled in the art that various changes may be made without departing from the spirit of the invention.

10: driving unit 12: motor
14: roll 142: upper roll
144: lower roll 16: wire
18: weight weight 20: washing unit
22: wash cloth 24: spring
30: position sensor 32: first sensor
34: Second sensor

Claims (9)

And a sensor (2) formed on one side of the screen door and controlling the opening and closing of the screen door by sensing;
A driving unit 10 provided at one side of the screen door or sensor 2 to provide a driving force; And
The surface of the sensor 2 is closely contacted with the surface of the sensor 2 and the surface of the sensor 2 is cleaned by the driving force of the driving unit 10 so that accurate and precise sensing of the sensor 2 without malfunction due to interference by foreign substances A washing unit 20 for washing the washing water;
And a sensor for detecting the temperature of the screen door.
[Claim 2] The driving unit according to claim 1,
A motor 12 for providing positive and reverse torque;
A roll (14) fixed to an extension shaft of the motor (12) and rotated by the forward and reverse rotation forces of the motor (12); And
A part of the roll 14 is wound and both ends of the roll 14 are positioned at both ends of the sensor 2 so that the cleaning part 20 lifts and rides along the rotational direction of the roll 14 to clean the surface of the sensor 2 Wire 16;
And a sensor for detecting the temperature of the screen door.
[3] The method according to claim 2, wherein, at both ends of the wire (16)
A weight 18 supporting the wire 16 so as to smoothly move up and down without slippage when the wire 16 moves up and down along the rotation direction of the roll 14;
And a sensor for detecting the temperature of the screen door.
[Claim 2] The driving unit according to claim 1,
A motor (12) rotating in the forward and reverse directions;
A roll (14) comprising a first roll (142) located at the top of the sensor (2) and a bottom roll (144) at the lower end of the sensor (2); And
A wire 16 constituting a cleaning part 20 at one side so as not to interfere with the sensor 2 while rotating between the upper and lower rolls 142 and 144 of the roll 14;
And a sensor for detecting the temperature of the screen door.
The washing machine according to any one of claims 1 to 4, wherein the washing unit (20)
A cleaning cloth 22 which is in close contact with the surface of the sensor 2 and performs a cleaning operation by a driving force of the driving unit 10;
And a sensor for detecting the temperature of the screen door.
The washing machine according to claim 5,
A spring (24) providing an elastic force to maintain said wash cloth (22) firmly in contact with the surface of the sensor (2);
And a sensor for detecting the temperature of the screen door.
The method according to any one of claims 1 to 4,
A position sensing sensor 30 for controlling the cleaning range of the sensor 2 in the cleaning unit 20 by a driving force provided from the driving unit 10;
And a sensor for detecting the temperature of the screen door.
[7] The method according to claim 7,
A first or second sensor (32) (34) configured to sense the cleaning range of the cleaning portion (20), which is configured on each or both of the lower end and the upper end of the sensor (2);
And a sensor for detecting the temperature of the screen door.
The sensor according to any one of claims 1 to 4, wherein the sensor (2)
An optical sensor including a light emitting unit configured to stand upright at a predetermined height from the ground and emitting light at one end and a light receiving unit receiving light emitted from the light emitting unit to generate a sensing signal;
Wherein the optical sensor cleaner device of the screen door comprises:

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