WO2018199514A1

WO2018199514A1 - Safety device for preventing hand from being wedged in elevator

Info

Publication number: WO2018199514A1
Application number: PCT/KR2018/004221
Authority: WO
Inventors: 윤일식
Original assignee: 윤일식
Priority date: 2017-04-24
Filing date: 2018-04-11
Publication date: 2018-11-01
Also published as: JP2020517556A; CN110740961A; KR101793404B1; JP6698232B1; CN110740961B

Abstract

The present invention relates to a safety device which controls the opening and closing of a door by means of a safety shoe when a hand of a person gets caught in the gap between the elevator door and door frame, thereby preventing the hand from being wedged therein, the safety device comprising: embedded boxes (20) disposed in the lower inside part of both sides of a door frame of an elevator, and each having an opening (22) penetrating to the outside of the door frame; a protruding member (30) which is disposed in each embedded box (20) so as to be movable therein, and which can protrude outside of the embedded box and retract thereinto; a pressure means (40), disposed in each embedded box (20), for providing pressure for pushing the protruding member (30) to the outside of the embedded box; a foreign substance-removing means (50), disposed inside the opening (22) of each embedded box (20), for removing foreign substances on the surface of the protruding member (30) which moves inside the embedded box (20); light-emitting elements (62) disposed on the upper parts of the door frame (10), each at an orthogonal position corresponding to a light-receiving element (60) disposed at the end of the upper surface of each protruding member (30); and a light-sensor controller (64) connected to each light-receiving element (60) and light-emitting element (62) to sense whether the path of light is blocked. x

Description

Safety device to prevent pinch of elevator

The present invention relates to a safety device for preventing hand pinching of an elevator, and more particularly, to a safety device which prevents hand pinching by controlling opening and closing of a door when a human hand is caught at an interval between an elevator door and a door frame using an optical sensor. .

There is a gap between the door (D) and the door frame (10) for smooth opening and closing operation of the elevator door (D), the door (D) when a passenger waiting in the platform to put on the door surface It is not uncommon to notice that the door is open and the hand is injured by the gap between the door frame and the door while the hand is placed on the door surface. In particular, in children, lack of attention is often caused by such hand-clamping safety accidents.

According to statistical data published by the National Security Agency on February 19, 2016, a total of 319 safety accidents occurred in the last 10 years, resulting in 365 casualties and 91 deaths. In the case of double-handed accidents, there were about 1 serious accidents that require more than 3 weeks of treatment each year. There were 79 minor accidents reported to Korea Consumer Resources in 2013, 103 in 14 years and 92 in 15 years. . In order to prevent such accidents, the domestic lifting technique has strengthened the gap standard between elevator doors and door frames from 10mm to 5mm.

In order to solve this problem, a conventional apparatus using an optical sensor is shown in FIG. 1, where FIG. 1A is a front view and FIG. 1B is an enlarged view of a main part.

1A to B, in the conventional apparatus, the light emitting part and the light receiving part are disposed at the lower and upper ends of the side of the door frame of the elevator door, and the operation of the elevator door is stopped when the light path between the light emitting part and the light receiving part is blocked. It is supposed to.

In the conventional apparatus, the hatched portion between the light emitting unit and the light receiving unit is a dead zone in which the sensor cannot be detected, and there is a problem in that a hand pinch occurs in the dead zone.

In addition, as shown in Fig. 1B, the light receiving unit is always exposed to the outside, and there is a problem that the light sensing performance is deteriorated when the light receiving unit is covered with dust or foreign matter.

Figure 2 shows an example in which the light emitting element and the light receiving element is installed on the bottom of the door frame of the elevator door, 2A is a perspective view, 2B is a plan view showing the installation operation sequence.

In this embodiment, by forming the corner portion of the door frame 10 facing the door D at an oblique angle, and by installing an optical sensor above and below this portion, the problem of the embodiment of FIG. As a result, the problem of deteriorating the photosensitive performance due to the foreign matter covered by the optical sensor was not solved.

In addition, as shown in Figure 2B showing the state before and after the installation of the optical sensor (S), in order to install the optical sensor (S), the door D on the left side of the arrow as shown by the broken line in advance, and the light to the door frame 10 After installing the sensor, as shown in the drawing to the right of the arrow, the door (D) has to be readjusted to fit the gap specification (5mm), there was a very troublesome installation work.

In addition, in this case, since the door frame of the oblique corner shape must be used, the existing door frame itself, which is mostly the right angle corner shape, must be replaced, and there is a problem in that it requires a separate production cost and working time and is difficult to install in reality.

The present invention has been made in view of the above problems in the prior art, and reduces the dead zone as much as possible, prevents the optical sensor from being covered with foreign matter, and the installation of the light sensor method is simple without the removal of the elevator door and replacing the door frame. An object of the present invention is to provide a hand pinching prevention device.

To achieve this purpose, the present invention,

A buried box 20 formed inside both lower door frames 10 of the elevator and having an opening 22 communicating with the outside of the door frame;

A protruding member 30 installed to be movable in the buried box 20 and protruding out of the buried box and inserted into the buried box;

Pressurizing means (40) installed inside the buried box (20) to apply a force to protrude the protruding member (30) out of the buried box;

Foreign matter removal means (50) installed inside the opening (22) of the buried box (20) and removing foreign matter on the surface of the protruding member (30) moving in the buried box (20);

A light receiving element 60 installed on an upper end of the protruding member 30;

A light emitting element 62 installed above the door frame 10 at a position corresponding to the light receiving element 60 perpendicularly; And

And an optical sensor controller 64 connected to the light receiving element 60 and the light emitting element 62 to detect whether the optical path is blocked.

When the light path of the light receiving element receiving the light emitted from the light emitting element is blocked by the passenger's hand or foreign object, the optical sensor controller 64 detects this, the optical sensor controller 64 is connected to the elevator controller and the door controller, It provides a safety device for preventing hand pinching of the elevator by stopping the door operation or slowing the opening and closing speed by adjusting the opening and closing state of the door according to the blocking state of the optical path.

In addition, according to the present invention, two buried boxes (20) formed in the interior of the lower and upper both of the door frame 10 of the elevator and formed with an opening (22) which communicates with the outside of the door frame;

A protruding member 30 installed to move in each of the buried boxes 20 and protruding out of the buried box and inserted into the buried box;

Pressurizing means (40) installed inside each of the buried boxes (20) to apply a force to protrude the protruding member (30) out of the buried box;

Foreign matter removal means (50) installed inside each opening (22) of the buried box (20), and removing foreign matter on the surface of the protruding member (30) moving in the buried box (20);

A light receiving element (60) installed on an upper end portion of the protruding member (30) of the lower buried box of the two buried boxes (20);

A light emitting element 62 installed at a position corresponding to the light receiving element 60 at a lower surface of an end portion of the protruding member 30 of the upper buried box of the two buried boxes 20; And

It is also connected to the light receiving element 60 and the light emitting element 62, to provide a safety device for preventing pinch of the elevator, including; an optical sensor controller 64 for detecting whether the optical path is blocked.

In the present invention, the pressing means 40 may be a spring installed inside the buried box 20 toward the rear of the protruding member 30.

In addition, the pressing means 40 may be one or more pivot connecting rods connecting between the protruding member 30 and the upper surface of the buried box 20.

On the other hand, the lower protruding member 30 is protruded inclined downward, the light receiving element 60 is replaced by the reflecting plate 63, the door frame at the position to receive the light reflected from the reflecting plate 63 exiting the light emitting element 62 Another light receiving element 65 may be provided in the portion 10.

According to the present invention configured as described above, it is possible to reduce the dead zone area as much as possible, and to prevent the optical sensor from being covered with foreign substances, thereby maintaining the photosensitive performance of the optical sensor even after a long time. Installation can be done easily without replacing existing door frame. In addition, if necessary, the photosensitive zone may be set larger than in the related art.

1 is an enlarged front view and main portion of a conventional apparatus using an optical sensor;

2 is an example in which a light emitting element and a light receiving element are installed above the door frame of an elevator door, 2A is a perspective view, and 2B is a plan view showing an installation procedure;

3 is an example of the present invention, 3A is an elevational view of an elevator door, and 3B is an enlarged view of an original portion;

4A to 4B are cross-sectional views of a state in which the pressing means is a spring and the protruding member is normally protruded and the protruding member is pushed in;

5A-B are cross-sectional views of a state in which the pressing means is a pivot connecting rod, and the protruding member is normally protruded and the protruding member is pushed in;

6 is a view showing another example of the present invention, 6A is a front view of the elevator door, 6B is an enlarged cross-sectional view when using a spring, 6C is an enlarged cross-sectional view when using a pivot connecting rod.

Figure 3 shows an example of applying the present invention, Figure 3A is a front view of the elevator door to which the present invention is applied, 3B is an enlarged view of the original portion.

As shown in FIG. 3, a buried box 20 (indicated by a broken line) is formed inside the lower part of both door frames 10 of the elevator (see FIG. 3B), and the opening 22 of the buried box 20 is Open through the door frame.

Protruding member 30 is installed in the buried box 20 so as to be movable, and as shown in the drawing, it protrudes out of the buried box as usual, but when it is necessary to remove foreign substances such as dust, it may be inserted into the buried box. (See FIGS. 4-5). The inserted protruding member 30 is subjected to a force to protrude to the outside of the buried box by the pressing means 40 installed in the buried box 20 (see Figs. 4 to 5). This pressing means 40 will be described in detail with reference to FIGS. 4 to 5.

The light receiving element 60 is installed on the upper end of the protruding member 30, and the light emitting element 62 is installed on the door frame 10 at a position corresponding to the light receiving element 60 vertically. Light emitted from the light emitting element 62 is incident on the light receiving element 60 along the optical path indicated by the broken line.

An optical sensor controller 64 is connected to the light receiving element 60 and the light emitting element 62 to detect whether the light path is blocked, and the light path of the light receiving element that receives the light from the light emitting element is caused by the passenger's hand or foreign object. When blocked, the optical sensor controller 64 detects this, and the optical sensor controller 64 is connected to the elevator controller and the door controller to stop or open the door operation by adjusting the open / closed state of the door according to the blocked state of the optical path. You can slow down. The passenger's hand can be prevented from getting caught in the elevator.

On the other hand, if necessary, the light emitting element and the light receiving element may be arranged oppositely.

4 is a cross-sectional view showing an example of the pressing means 40 of the above-described protruding

member

30, 4A shows a state in which the protruding member 30 normally protrudes, and 4B shows a state in which the protruding member is pushed in.

As shown in FIG. 4, foreign matter on the surface of the protrusion member 30 moving in the buried box 20 inside the opening 22 of the buried box 20, specifically, above the protrusion member 30, is removed. The foreign matter removing means 50 is installed, in this embodiment has the form of a brush of the foreign matter removing means 50. In the projected state of FIG. 4A, when the light-receiving element 60 is maintained by the foreign matter removing means 50 when it is changed to the compressed state of FIG. 4B, it is possible to prevent the deterioration of the photosensitive performance due to the foreign matter. Can be.

In addition, the pressing means 40 is preferably a spring that is installed inside the buried box 20 to the rear of the protruding member 30. When necessary, if a person pushes the protruding member 30 inward by hand, the protruding member 30 is returned to its original position by the elasticity of the spring.

5 is a cross-sectional view showing another example of the pressing means 40, the pressing means of the present embodiment consists of one or more pivot connecting rod connecting between the protruding member 30 and the top surface of the buried box 20. That is, the protruding member 30 is suspended on the pivot connecting rod to maintain the state of protruding out of the buried box as shown in FIG. 5A, and is pushed in as shown in FIG. 5B. When the external force is removed in the state of FIG. 5B, the self-weight of the protruding member 30 returns to the state of FIG. 5A.

In this embodiment, the protruding member 30 protrudes obliquely downward, and the above-described light receiving element 60 is replaced with the reflecting plate 63, and the light reflected from the reflecting plate 63 exiting the light emitting element 62 is reflected. Another light receiving element 65 is installed in the door frame 10 at the receiving position. That is, the light emitted from the light emitting element 62 enters the light receiving element 65 via the reflecting plate 63, thereby forming an inverted triangular optical path as shown in the figure. In the present embodiment, since two optical paths indicated by broken lines are formed, there is an advantage that the handhold prevention range becomes much wider than the above-described embodiment. In addition, by adjusting the degree of inclination of the protruding member 30 can be adjusted to the range in which the optical path is formed.

Figure 7 is a cross-sectional view showing another embodiment of the present invention, in this embodiment, the same structure as the above-described buried box, the protrusion member, the pressing means is disposed on the top of the door frame 10, the light emitted from the upper protrusion member As a structure incident on the lower protruding member, other functions are the same as in the above-described embodiment.

Claims

A buried box 20 formed at an upper portion of both door frames 10 of the elevator and having an opening 22 communicating with the outside of the door frame;

A protruding member 30 installed to be movable in the buried box 20 and protruding out of the buried box and inserted into the buried box;

Pressurizing means (40) installed inside the buried box (20) to apply a force to protrude the protruding member (30) out of the buried box;

Foreign matter removal means (50) installed inside the opening (22) of the buried box (20) and removing foreign matter on the surface of the protruding member (30) moving in the buried box (20);

A light receiving element 60 installed on an upper end of the protruding member 30;

A light emitting element 62 installed above the door frame 10 at a position corresponding to the light receiving element 60 perpendicularly; And

And an optical sensor controller 64 connected to the light receiving element 60 and the light emitting element 62 to detect whether the optical path is blocked.

When the light path of the light receiving element receiving the light emitted from the light emitting element is blocked by the passenger's hand or foreign object, the optical sensor controller 64 detects this, the optical sensor controller 64 is connected to the elevator controller and the door controller, Safety device for preventing hand pinching of an elevator, characterized in that the door operation is stopped or the opening and closing speed is slowed down by adjusting the opening and closing state of the door according to the blocking state of the light path.
Two buried boxes (20) formed in the lower and upper portions of both door frames (10) of the elevator and formed with openings (22) passing through the outside of the door frame;

A protruding member 30 installed to move in each of the buried boxes 20 and protruding out of the buried box and inserted into the buried box;

Pressurizing means (40) installed inside each of the buried boxes (20) to apply a force to protrude the protruding member (30) out of the buried box;

Foreign matter removal means (50) installed inside each opening (22) of the buried box (20), and removing foreign matter on the surface of the protruding member (30) moving in the buried box (20);

A light receiving element (60) installed on an upper end portion of the protruding member (30) of the lower buried box of the two buried boxes (20);

A light emitting element 62 installed at a position corresponding to the light receiving element 60 at a lower surface of an end portion of the protruding member 30 of the upper buried box of the two buried boxes 20; And

And an optical sensor controller 64 connected to the light receiving element 60 and the light emitting element 62 to detect whether the optical path is blocked.

When the light path of the light receiving element receiving the light emitted from the light emitting element is blocked by the passenger's hand or foreign object, the optical sensor controller 64 detects this, the optical sensor controller 64 is connected to the elevator controller and the door controller, Safety device for preventing hand pinching of an elevator, characterized in that the door operation is stopped or the opening and closing speed is slowed down by adjusting the opening and closing state of the door according to the blocking state of the light path.
The safety device for preventing hand pinch of the elevator according to claim 1 or 2, wherein the pressing means (40) is a spring installed inside the buried box (20) toward the rear of the protruding member (30).
The safety device for preventing hand pinch of the elevator according to claim 1 or 2, wherein the pressing means (40) is at least one pivot connecting rod connecting the protruding member (30) and the upper surface of the buried box (20). .
4. The light emitting device of claim 3, wherein the lower protruding member 30 protrudes obliquely downward, and the light receiving element 60 is replaced by the reflecting plate 63, and the light emitted from the light emitting element 62 and reflected by the reflecting plate 63 is inclined. Safety device for preventing hand pinch of the elevator, characterized in that the other light receiving element 65 is installed in the door frame 10 portion of the position.