JP2020517556A - Safety device for preventing the elevator from being pinched - Google Patents

Abstract

The present invention relates to a safety device that controls the opening and closing of a door when a person's hand is caught in a gap between an elevator door and a door frame by using an optical sensor and prevents the hand from being caught. And a protruding member that is provided so as to be movable in the embedded box 20 and that is inserted into the embedded box after protruding to the outside of the embedded box 20. 30, a pressurizing unit 40 provided inside the embedding box 20, for applying a force to protrude the projecting member 30 to the outside of the embedding box 20, provided inside the opening 22 of the embedding box 20, and in the embedding box 20 The foreign matter removing means 50 for removing foreign matter on the surface of the moving protruding member 30, the light receiving element 60 provided on the upper surface of the end of the protruding member 30, and the door frame 10 at a position perpendicular to the light receiving element 60. It includes a light emitting element 62 provided on the upper portion, and an optical sensor controller 64 connected to the light receiving element 60 and the light emitting element 62 to detect whether or not the light path is blocked. [Selection diagram] Fig. 3

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety device for preventing hand jamming of an elevator. Specifically, when a person's hand is caught in a gap between an elevator door and a door frame by using an optical sensor, the opening/closing of the door is controlled to prevent the hand jam. Safety device.

When there is a gap between the door D and the door frame 10 for the smooth opening/closing operation of the elevator door D, and the passenger waiting at the landing to board the elevator puts his/her hand on the door surface, When the door D cannot be recognized to be opened and a hand is applied to the door surface, an accident occurs frequently because the hand is caught in the gap between the door frame and the door. In particular, children have insufficient attention, and such a hand-clapping accident often occurs.

According to statistical data issued by the National Security Agency on February 19, 2016, a total of 319 accidents caused by carelessness have occurred in the last 10 years, resulting in 365 casualties, including 91 deaths. Was a person. Among these, in the case of a hand-clamping accident, one serious accident that requires treatment for three weeks or more occurs each year, and 79 minor accidents were reported to the Korea Consumer Affairs Agency in 2013 and 103 in 2014. The number reached 92 in 2015. In order to prevent such an accident, the Domestic Elevator Act has strengthened the standard of the gap between the elevator door and the door frame from the conventional 10 mm to 5 mm.

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

As shown in FIGS. 1A and 1B, in a conventional apparatus, a light emitting unit and a light receiving unit are arranged at a lower portion and an upper end portion of a side surface of an elevator door, respectively, and a light path between the light emitting unit and the light receiving unit is disposed. When the door is cut off, the operation of the elevator door is stopped.

In the case of the conventional device, the shaded portion between the light emitting portion and the light receiving portion is the dead zone area which is the area where the sensor cannot detect, and if a hand jam occurs in the dead zone area, it can be detected. There was a problem that I could not.

Further, as shown in FIG. 1B, the light receiving portion is always exposed to the outside, and when the light receiving portion is covered with dust or foreign matter, there is a problem that the light detection performance is deteriorated.

FIG. 2 shows an example in which a light emitting element and a light receiving element are provided above and below a door frame of an elevator door, 2A is a perspective view, and 2B is a plan view showing the order of installation work.

In this embodiment, a dead zone is formed by forming an edge portion of the door frame 10 facing the door D obliquely and providing optical sensors above and below this portion. However, the problem that the photosensor is covered with a foreign substance and deteriorates the photosensitivity cannot be solved.

Further, as shown in FIG. 2B showing the state before and after the installation of the optical sensor S, in order to provide the optical sensor S, the door D on the left side of the arrow is separated beforehand as shown by the broken line, and the door frame 10 is removed. After the optical sensor is provided in the above, the door D has to be readjusted according to the gap standard (5 mm) as shown in the drawing on the right side of the arrow, so that the installation work is very troublesome.

In this case, since the diagonal edge type door frame must be used, most of the existing right angle edge type door frame itself must be replaced, which requires additional manufacturing cost and working time. There is also the problem that it is difficult to install realistically.

The present invention has been derived in consideration of such problems in the related art, and reduces the dead zone area to the maximum, prevents the optical sensor from being covered with a foreign substance, removes the elevator door and the door frame. It is an object of the present invention to provide an optical sensor type anti-pinch device that can be easily installed without replacement.

In order to achieve such an object, the present invention provides
An embedded box 20 formed inside the lower part of the door frame 10 on both sides of the elevator and having an opening 22 communicating with the outside of the door frame,
A protruding member 30 that is movably provided in the embedding box 20 and protrudes outside the embedding box and is then inserted into the embedding box;
A pressurizing unit 40 provided inside the embedding box 20 for applying a force to protrude the protruding member 30 to the outside of the embedding box;
A foreign matter removing unit 50 which is provided inside the opening 22 of the embedding box 20 and removes foreign matter on the surface of the protruding member 30 that moves in the embedding box 20,
A light receiving element 60 provided on the upper surface of the end of the protruding member 30,
A light emitting element 62 provided on the upper portion of the door frame 10 at a position vertically corresponding to the light receiving element 60, and an optical sensor controller 64 connected to the light receiving element 60 and the light emitting element 62 for detecting whether or not a light path is blocked. Including,
When the light path of the light receiving element that receives the light emitted from the light emitting element is blocked by the passenger's hand or a foreign object, the light sensor controller 64 detects it, and the light sensor controller 64 is connected to the elevator controller and the door controller. (EN) Provided is a safety device for preventing an elevator from being caught by a hand, which stops the door operation or delays the opening/closing speed by adjusting the open/closed state of the door according to the blocked state of the path.

Further, according to the present invention, two embedded boxes 20, which are formed in the lower part and the upper part of the both side door frame 10 of the elevator and have the opening 22 communicating with the outside of the door frame,
A protrusion member 30 provided to be movable in each of the embedding boxes 20 and protruding into the embedding box before being inserted into the embedding box.
Pressurizing means 40 provided inside each of the embedding boxes 20 for applying a force to protrude the protruding member 30 to the outside of the embedding box,
A foreign matter removing unit 50 provided inside each opening 22 of the embedding box 20 for removing foreign matter on the surface of the protruding member 30 that moves in the embedding box 20.
Of the two embedded boxes 20, a light receiving element 60 provided on the upper surface of the end of the protruding member 30 of the lower embedded box,
Of the two embedded boxes 20, a light emitting element 62 provided at a position vertically corresponding to the light receiving element 60 on the lower surface of the end of the protruding member 30 of the upper embedded box, and connected to the light receiving element 60 and the light emitting element 62. Provided is a safety device for preventing an elevator from being caught by a hand including an optical sensor controller 64 that detects whether or not a light path is blocked.

In the present invention, the pressing means 40 may be a spring provided inside the embedded box 20 on the rear side of the protruding member 30.

In addition, the pressing means 40 may be one or more pivot connecting bars that connect the protruding member 30 and the upper surface of the embedding box 20.

On the other hand, the lower projecting member 30 projects so as to incline downward, the light receiving element 60 is replaced by the reflecting plate 63, and another light receiving portion is received at the position of the door frame 10 at the position where the light emitted from the light emitting element 62 and reflected by the reflecting plate 63 is received. Element 65 may be provided.

According to the present invention having such a configuration, the dead zone area can be reduced to a maximum extent as compared with the prior art, and the optical sensor can be prevented from being covered with a foreign substance so that the optical sensor can be used even after a long time. The photosensitive performance can be maintained, and the installation work can be easily performed without removing the elevator door and replacing the existing door frame. Further, if necessary, the photosensitive area can be set larger than in the conventional case.

It is a front view and the principal part enlarged view of the conventional apparatus using an optical sensor. It is an example which provided the light emitting element and the light receiving element in the upper and lower sides of the door frame of an elevator door, and 2A is a perspective view and 2B is a plan view showing the order of installation work. As an example of the present invention, 3A is a front view of an elevator door, and 3B is an enlarged view of a circle portion. FIGS. 6A and 6B are cross-sectional views of a state in which the pressing member is a spring, the protruding member is normally protruding, and a state in which the protruding member is pushed in. FIGS. 7A and 7B are cross-sectional views of a state in which the pressurizing means is a pivot connecting bar, the projecting member is normally projected, and the projecting member is pushed inward. It is a figure showing other examples of the present invention, 6A is a front view of an elevator door, 6B is an expanded sectional view when using a spring, and 6C is an expanded sectional view when using a pivot connecting bar. It is a front view which shows other embodiment of this invention.

FIG. 3 shows an example to which the present invention is applied, FIG. 3A is a front view of an elevator door to which the present invention is applied, and 3B is an enlarged view of a circle portion.

As shown in FIG. 3, an embedded box 20 (shown by a broken line) is formed inside a lower portion of each side door frame 10 of the elevator (see FIG. 3B), and an opening 22 of the embedded box 20 is formed in the door frame. It is open to the outside.

The protruding member 30 is movably provided in the embedding box 20 and normally protrudes to the outside of the embedding box as shown in the figure, but when foreign matter such as dust must be removed as will be described later, the embedding box 30 is removed. Inserted therein (see Figures 4-5). The projecting member 30 thus inserted receives a force for projecting to the outside of the embedding box by the pressurizing means 40 provided inside the embedding box 20 (see FIGS. 4 to 5). The pressing means 40 will be described in detail with reference to FIGS.

A light receiving element 60 is provided on the upper surface of the end of the protruding member 30, and a light emitting element 62 is provided on the upper portion of the door frame 10 at a position perpendicular to the light receiving element 60. The 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 that detects whether or not the light path is blocked is connected to the light receiving element 60 and the light emitting element 62. When the light path of the light receiving element that receives the light emitted from the light emitting element is blocked by a passenger's hand or a foreign object, The sensor controller 64 detects it, and the optical sensor controller 64 is connected to the elevator controller and the door controller, and stops the door operation or delays the opening/closing speed by adjusting the opening/closing state of the door according to the blocking state of the light path. You can It is possible to prevent the passenger's hand from being caught in the elevator.

On the other hand, if necessary, the light emitting element and the light receiving element can be arranged opposite to each other.

FIG. 4 is a cross-sectional view showing an example of the pressing means 40 of the above-mentioned protruding member 30, 4A shows a state in which the protruding member 30 normally projects, and 4B shows a state in which the protruding member is pushed inward. ..

As shown in FIG. 4, the foreign matter removing means 50 for removing foreign matter on the inside of the opening 22 of the embedding box 20, specifically, on the surface of the projecting member 30 moving in the embedding box 20 above the projecting member 30. Is provided, and in the present embodiment, the foreign matter removing means 50 has the form of a brush. When the protruding state of FIG. 4A is changed to the compressed state of FIG. 4B, the foreign substance removing unit 50 keeps the light-receiving element 60 in a clean state, so that it is possible to prevent the photosensitive performance from being deteriorated by the foreign substance. be able to.

Further, the pressing means 40 is preferably a spring provided inside the embedded box 20 on the rear side of the protruding member 30. When necessary, if a person manually pushes the protruding member 30 inward and then releases it, the elasticity of the spring causes the protruding member 30 to return to its original position again.

FIG. 5 is a cross-sectional view showing another example of the pressurizing means 40. The pressurizing means of this embodiment includes one or more pivot connecting bars that connect the protruding member 30 and the upper surface of the embedding box 20. ing. That is, the protruding member 30 hangs down from the pivot connecting bar, and is normally held in a state of protruding to the outside of the embedding box as shown in FIG. 5A and then pushed in as shown in FIG. 5B. If the external force is eliminated in the state of FIG. 5B, the weight of the projecting member 30 returns to the state of FIG. 5A again.

FIG. 6 is a view showing another example of the present invention, 6A is a front view of an elevator door, 6B is an enlarged sectional view when a spring is used, and 6C is an enlarged sectional view when a pivot connecting bar is used.

In this embodiment, the projecting member 30 projects so as to incline downward, the above-described light receiving element 60 is replaced by the reflecting plate 63, and the door frame 10 at a position where it receives the light emitted from the light emitting element 62 and reflected by the reflecting plate 63. Another light receiving element 65 is provided in the portion. That is, the light emitted from the light emitting element 62 enters the light receiving element 65 via the reflecting plate 63, and an inverted triangular optical path as shown in the drawing is formed. In the present embodiment, since two optical paths shown by broken lines are formed, there is an advantage that the hand-japping prevention range is much wider than that in the above-described embodiments. In addition, the range in which the optical path is formed can be adjusted by adjusting the degree of inclination of the protruding member 30.

FIG. 7 is a front view showing another embodiment of the present invention. In this embodiment, the same structure as the above-mentioned embedded box, protruding member, and pressurizing means is arranged on the upper portion of the door frame 10, The structure is such that the light emitted from the projecting member is incident on the lower projecting member, and the other functions are the same as in the above-described embodiment.

Claims (5)

An embedded box formed inside the lower part of the door frame on both sides of the elevator and having an opening communicating with the outside of the door frame,
A protruding member that is movably provided in the embedding box and protrudes outside the embedding box and is then inserted into the embedding box;
A pressurizing means provided inside the embedding box, for applying a force to protrude the protruding member to the outside of the embedding box;
A foreign matter removing means that is provided inside the opening of the embedding box and removes foreign matter on the surface of the protruding member that moves in the embedding box;
A light-receiving element provided on the upper surface of the end of the protruding member,
A light emitting element provided on the upper portion of the door frame at a position vertically corresponding to the light receiving element, and an optical sensor controller that is connected to the light receiving element and the light emitting element and detects whether or not a light path is blocked,
When the light path of the light receiving element that receives the light emitted from the light emitting element is blocked by a passenger's hand or a foreign object, the light sensor controller detects it and the light sensor controller is connected to an elevator controller and a door controller. A safety device for preventing hand jamming of an elevator, wherein the door operation is stopped or the opening/closing speed is delayed by adjusting the opening/closing state of the door according to the blocking state of the light path. Two embedded boxes formed inside the lower part and the upper part of the door frame on both sides of the elevator, and having an opening communicating with the outside of the door frame,
A protruding member that is movably provided in each of the embedding boxes and that protrudes outside the embedding box and is then inserted into the embedding box;
A pressurizing means provided inside each of the embedding boxes, for applying a force for causing the protruding member to protrude to the outside of the embedding box,
A foreign matter removing means that is provided inside each opening of the embedding box and removes foreign matter on the surface of the protruding member that moves in the embedding box;
A light-receiving element provided on the upper surface of the end of the protruding member of the lower embedded box of the two embedded boxes,
Of the two embedded boxes, a light emitting element provided on the lower surface of the end of the protruding member of the upper embedded box at a position perpendicularly corresponding to the light receiving element, and a light emitting element connected to the light receiving element and the light emitting element, Including an optical sensor controller that detects the presence or absence of interruption,
When the light path of the light receiving element that receives the light emitted from the light emitting element is blocked by a passenger's hand or a foreign object, the light sensor controller detects it and the light sensor controller is connected to an elevator controller and a door controller. A safety device for preventing hand-clipping of an elevator, characterized in that the operation of the door is stopped or the opening/closing speed is delayed by adjusting the opening/closing state of the door according to the blocking state of the light path. The safety device for preventing hand-clipping of an elevator according to claim 1 or 2, wherein the pressurizing means is a spring provided inside the embedded box on the rear side of the projecting member. [3] The elevator according to claim 1 or 2, wherein the pressurizing means is one or more pivot connecting bars that connect the protruding member and the upper surface of the embedded box. Safety device. The lower projecting member projects so as to incline downward, the light receiving element is replaced by a reflecting plate, and another light receiving element is provided in the door frame portion at a position for receiving the light emitted from the light emitting element and reflected by the reflecting plate. The safety device for preventing hand jamming of an elevator according to claim 3, wherein: