KR200493569Y1 - apparatus for preventing the closing of elevator door - Google Patents

Abstract

In the elevator closing prevention device equipped with a detection sensor for preventing the door from closing by detecting an object in the inner door, the outer door installed in the door frame of each floor and the inner door installed in the cage door frame are opened and closed together. By setting the position, the detection sensor of the inner door is provided with a blocking plate that can change the position so that the detection sensor of the inner door can detect an object on the door closing path or in the unlocked position, and the blocking plate secures stability at least in the closing prevention position. Disclosed is an elevator closing prevention device, characterized in that it has a means so as to suppress accidental positional fluctuations.
According to the present invention, the blocking plate can exist in the anti-closing position that prevents the door from closing accurately and stably and the release position that allows the door to close, and it cannot easily leave the set position, so the object recognition of the existing elevator's anti-closing sensor A problem in that the blocking plate that causes the blocker to be easily changed during use and does not sufficiently perform its function of preventing closing can be solved.

Description

Apparatus for preventing the closing of elevator door

The present invention relates to an elevator closing prevention device, and more particularly, an elevator closing prevention device that keeps the elevator door open for a set period of time and then automatically closed as necessary without closing it. It is about.

An elevator is a machine that loads people or objects in a box-shaped cage and carries them up and down between the floors of a building. As shown in Fig. 1, an outer door 2 is installed on the door frame 1 of each floor, and the cage The door frame 3 is provided with an inner door 4, and when the inner door 4 is opened and closed, the outer door 2 is interlocked to open and close together.

In addition, the outer door 2 and the inner door 4 are set to be open for a certain period of time and then close when the occupant presses the close button, or automatically close after a certain period of time without pressing the close button. 2) A safety device is provided to automatically open the door again if an occupant or an object is caught while the inner door 4 and the inner door 4 are closed.

The safety device is installed on the inner door 4, and uses a non-contact type using a detection sensor 5 consisting of an optical sensor or a proximity sensor as shown in FIG. 1, and a change in mechanical movement according to contact, although not shown. There is a contact type, and in many cases, a non-contact type and a contact type are used together.

In this elevator, the door is opened for a certain period of time and then automatically closed.When an operator transports building materials to the upper or lower floors during building construction, or when carrying luggage due to moving in or moving into a building, the door does not close for the required time. It needs to be avoided. To this end, conventionally, there is a method of stopping the door opening and closing function by manipulating the control unit of the elevator, but there is a hassle of having to open and operate the control box with a key, and there is a method of continuously pressing the door open button of the elevator. If it is, it is difficult to carry things, and even if there are several people, there is a disadvantage that one person cannot work.

Therefore, as shown in Fig. 1, a wedge 6 is inserted between the inner door 4 and the cage door frame 3 to forcibly prevent the inner door 4 from being closed, but materials or objects In the case of repeated transport, the operation is cumbersome because the wedge (6) must be inserted and removed each time, and the place to store the wedge (6) is not suitable, so there is an inconvenience of losing or finding it.In particular, the inner door (4) and the cage door frame (3) ) There is a disadvantage of causing scratches.

As one method for solving this problem, Korean Patent Registration No. 10-1875035, which has been filed and registered by the applicant of the present application, discloses a device for preventing door closing of an elevator.

2, in this conventional example, the outer door 12 installed on the door frame 11 on each floor and the inner door 14 installed on the cage door frame 13 are configured to open and close together, and the inner door 14 In the door close prevention device 20 of an elevator equipped with a detection sensor 15 for preventing the door from being closed by detecting an object in the door, it is installed on the cage door frame 13 and the detection sensor of the inner door 14 ( A blocking plate 21 is provided that moves between a closing prevention position blocking the front side of 15) and a release position deviating from the front side of the detection sensor 15.

Here, the door closing preventing device 20 has a shape similar to a kind of hinge. The door closing prevention device 20 includes a fixing plate 22 fixedly installed on the cage door frame and a blocking plate 21 that is rotatably coupled to the fixing plate 22, and although not clearly shown, it has a rotating structure such as a hinge. Hazards The coupling portions of the blocking plate and the fixing plate may be formed with coupling rings alternately positioned with each other so as to be penetrated by a common coupling pin or a pivoting central axis.

Various fixing members such as bolts and nuts can be used to fix the fixing plate 22 to the cage door frame 13, but here, a magnetic iron plate 24 is attached to the cage door frame using an adhesive, and a magnet is attached to the fixing plate 22. It uses a method of fixing the fixing plate to the steel plate by using magnetic force. The magnet can be removed from the iron plate by applying a strong force instantaneously, so that the hinge part can be freely attached to and removed from the cage door frame using a magnet.

In addition, in Korean Utility Model Publication No. 20-1997-0001727, when the elevator door is open, the elevator door remains open until the door close button is operated if there is a waiting for boarding in front of it or cargo over a certain weight is placed in front of it. An elevator door closing automatic control device is disclosed.

Here, if there is a waiting for boarding or an object of a certain weight or more is placed in front of the open elevator door, the weight sensor or human body sensor detects it and transmits a detection signal to the control unit, so that the control unit keeps the door open operation.

However, in the elevator door closing prevention device using a hinge as shown in Fig. 2, the blocking plate that blocks the optical path of the sensor for preventing the door from closing or detects the proximity of an object protrudes outward, so it is easy to touch people or objects entering or leaving the elevator. The position may be changed, and in this case, the conventional problem of the elevator door being closed and the elevator moving up and down despite the presence of more people or objects may arise again.

In this case, the user has operated the barrier plate to keep the door open, so if the location of the barrier plate is changed easily, there is a risk that the door closes in a state that the user did not expect, causing a great impact in the event of a collision or damage to the object. It gets bigger.

Korean Patent Registration No. 10-1875035 Elevator door closing prevention device Korea Utility Model Publication No. 20-1997-0001727 Elevator door closing automatic control device

The present invention on the door frame is that the blocking plate that causes object recognition of the existing elevator's door closing prevention sensor cannot easily maintain its position due to displacement due to collision with surroundings when the position of the blocking plate is easily changed during use or when the blocking plate is moved. An object of the present invention is to provide an elevator closing prevention device capable of preventing the door closing prevention function from being operated in a situation where the function of preventing the door from closing is not sufficiently performed, or in an undesirable situation.

The object of the present invention is to provide an elevator closing prevention device having a configuration that allows the blocking plate position to exist in a position that accurately prevents the door from closing and a position that allows the door to be closed, and prevents easily deviating from the set position. do.

According to an additional aspect, the present invention prevents the occurrence of a problem such as that the user of the elevator on another floor cannot use the elevator because the blocking plate is in the position of preventing the closing of the door without the user's knowledge of the closing prevention device even though the door closing prevention should be released. An object of the present invention is to provide an elevator closing prevention device that can be prevented.

The elevator closing prevention device of the present invention to achieve the above object is configured to open and close together the outer door installed in the door frame of each floor and the inner door installed in the cage, and a detection sensor for preventing the door from closing by detecting an object in the inner door is provided. In the provided elevator closing prevention device,

It is equipped with a blocking plate that can switch its position so that the detection sensor of the inner door can detect an object on the door closing path according to the user's physical location setting,

It is characterized in that it has at least a means for ensuring stability when the blocking plate is in a closed position so that accidental positional fluctuations are suppressed.

In the present invention, more preferably, the blocking plate is provided with a stability securing means to have stability in both the closing prevention position and the release position, so that the blocking plate is difficult to escape from the two positions and may be made to return to the two positions even when partially deviated.

In the present invention, the blocking plate may constitute a part of a hinge structure having an eccentric shaft, a spring hinge structure having an open position and a closed position, and the like.

The present invention is made of a hinge structure, one side (fixing plate) of the hinge structure, which can have different rotational displacements, is fixed to the elevator, and the other side (blocking plate) is placed in a position detected by the detection sensor while the hinge structure is open, A magnet is provided at least on the other side as a means of securing stability, so that the magnet may be attached by magnetic force to a magnetic body of the elevator or a magnet surface of opposite polarity while the hinge structure is open. To this end, a separate magnetic material or magnet attached to the magnet may be installed at the corresponding elevator position of the magnet on the other side.

In the present invention, the detection sensor includes a light-receiving element and a light-emitting element, and a light sensor that detects when an object blocks the light path between them, or a proximity sensor that senses when an object is placed close to the sensor, and a contact that senses it when touched. It can be a sensor.

In the present invention, the elevator closing prevention device may further include a means for generating a warning signal after a certain time elapses after the blocking plate is placed in the closing prevention position, and switching to the released position after a certain time after the warning signal is generated.

According to the present invention, the blocking plate may exist in a closing prevention position to prevent door closing accurately and stably and a release position to enable door closing, and it is not possible to easily deviate from the set position.

Therefore, according to the present invention, although the blocking plate that causes object recognition of the existing elevator's door-closing prevention sensor is easily changed during use, it cannot sufficiently perform its function of preventing the door from closing, or even though the door closing prevention must be released. And it is possible to solve the conventional problem that elevator users on other floors cannot use the elevator because the blocking plate is in a position where the door is prevented from closing without the user being aware of it.

1 is a conceptual explanatory diagram showing a conventional elevator door closing prevention method
2 is a conceptual diagram showing an example of a conventional elevator door closing prevention device;
3 is a conceptual diagram showing the configuration of a state in which the elevator closing prevention device according to an embodiment of the present invention is in a closing prevention position,
Figure 4 is a conceptual diagram showing the configuration of the elevator closing preventing device according to an embodiment of the present invention in a state in the release position;
5 is a perspective view and a partial enlarged view schematically showing the configuration of an elevator closing prevention device according to another embodiment of the present invention;
6 is a conceptual explanatory diagram schematically showing the configuration concept of an elevator closing prevention device according to another embodiment of the present invention.

Hereinafter, the present invention will be described in more detail through specific embodiments with reference to the drawings.

Referring to Fig. 3, the elevator closing prevention device in this embodiment is premised to open and close the outer door 12 installed on each floor door frame and the inner door 14 installed on the cage door frame 13 together. Here, a light-emitting element and a light-receiving element are respectively installed on both sides of the inner door of the cage at opposite positions to form the detection sensor 15. When the detection sensor 15 blocks the light-receiving of the light-receiving element because there is an object in front of the light-emitting element or the light-receiving element, for example, it is considered that there is an obstacle in the path of closing the inner door 14, and the door closing operation is not performed.

In this embodiment, the elevator closing prevention device is made with a blocking plate 21, and the blocking plate 21 forms a part of the hinge structure. A fixing plate 22 having a hinge structure similar to that of a conventional door closing prevention device is fixed to the cage door frame 13. The blocking plate 21 is rotatably fixed to the fixing plate 22.

For rotation, for example, a ring-shaped coupling part is installed on the fixing plate, a rotation center shaft-shaped coupling part is installed on the blocking plate, and a rotation center shaft-shaped coupling part is inserted into the ring-shaped coupling part, and the fixing plate and the blocking plate are combined to prevent closing. Can be achieved.

In a cross section perpendicular to the longitudinal direction of the rotation center axis, the ring and the rotation center axis form a round shape, and the inner diameter of the ring is larger than the outside diameter of the rotation center axis, so the blocking plate 21 can rotate relatively freely with the fixing plate 22 within a certain angle range. have.

Therefore, in this state alone, the fixing plate 22 is fixed to the cage door frame 13 and the blocking plate 21 rotates 180 degrees in a closed state overlapping the fixing plate 22 to form an unfolded shape, and light emission on one side of the inner door 14 When the detection sensor 15 composed of an element or a light-receiving element is covered, that is, even if it is installed in a closed-prevention position, a person or an object subsequently touches the blocking plate 21 while passing through the inner door so that the blocking plate emits light from the detection sensor. It cannot block the device or the light-receiving device, and the elevator door may close unintentionally.

In the present embodiment, strong magnets 31 and 33 are installed on the outer surface of the blocking plate 21 as shown, so that in the closed state in which the hinge structure is overlapped, the strong magnet of the blocking plate 21 is placed in the corresponding position of the fixing plate 22. Strong coupling is made by magnetic force with the existing magnet or magnetic material, and when the hinge structure is unfolded, the inner door (14), the outer door of each floor door frame (12), and the magnet or magnetic body installed in at least one of the door frames of each floor are strong due to the magnetic force. Try to combine. Of course, at this time, if the inner door, outer door, and door frame themselves are magnetic, it will not be necessary to install a separate magnetic material or magnet.

Of course, the magnet does not have to be only on the outer side of the blocking plate, and there is a magnet 23 with strong magnetism in the fixed plate 22, so if a magnetic material such as iron plate 24 is added to the door frame where the closing prevention device is installed, the elevator is prevented from closing. When the device itself is installed in an elevator, it can be used as a means to easily install and remove. In the hinge structure, a magnet is also installed on the inner side of the blocking plate, or a magnet is installed so that both the outer and inner surfaces are exposed so that the fixing plate and the blocking plate overlap. Even in the folded state, they are strongly attached to each other by magnetic force, so that they do not unintentionally unfold by touching other objects and thus achieve a stable state.

In the above-described embodiments, the fixing plate and the blocking plate may each be a magnetic plate such as an iron plate, and in this case, it is possible to apply magnetism to pass through the plate, so that only one magnet is installed in a portion to be strongly attached in correspondence with each other. It is possible, and it is also possible to install the magnet so that it passes through the iron plate and exerts magnetic force on both the inside and the outside of the iron plate.

In the above embodiment, a magnet is installed on the outer surface of the blocking plate, but instead of a magnet, a fixing means by contact such as Velcro (wrap) may be used in general. Of course, in this case, at a position in contact with the Velcro of the other side plate with the hinge unfolded, a corresponding Velcro must be installed to make a strong connection with the Velcro installed on at least one of the cage inner door, the outer door of each floor door frame, and each floor door frame.

For this type of installation, one side of the Velcro is a Velcro side with a number of fine hooks or hooks, and the other side is to fix this Velcro to an object such as a hinged blocking plate, the inner or outer side of the fixing plate, or a door frame or door. It can be formed with a strong adhesive surface.

Figure 5 shows another embodiment of the present invention. Here, an elevator closing prevention device in the form of a hinge similar in appearance to the embodiments of FIGS. 3 and 4 is installed. However, in this embodiment, instead of installing magnets or Velcro on the outer surface of the blocking plate, the coupling portion of the hinge structure between the blocking plate and the fixing plate is configured and used in a form suitable for the present invention.

That is, a ring-shaped coupling portion (122a) is installed on the fixing plate (122), an eccentric shaft-shaped coupling portion (121a) is installed on the blocking plate (121), and an eccentric shaft-shaped coupling portion (122a) is installed in the ring-shaped coupling portion (122a). The coupling portion (121a) of the is fitted, the fixing plate and the blocking plate are coupled to form a closing prevention device of the hinge structure.

Here, the eccentric axis has an ellipse or a similar shape in a cross section perpendicular to the longitudinal axis, and is somewhat long in one direction (long axis direction), and somewhat short in a direction perpendicular to it (short axis direction). The shape of the ring also has an ellipse or similar shape when viewed in a cross section perpendicular to the direction passing through the ring.

Here, the short axis length of the ellipse of the ring is slightly smaller than the length of the long axis of the ellipse of the eccentric shaft, but the ring can be partially deformed elastically. When the eccentric axis is rotated by applying force, both ends of the long axis of the ellipse of the eccentric shaft are the shortening of the ellipse formed by the ring. It can pass through both ends. However, both ends of the long axis of the ellipse of the eccentric shaft are formed somewhat sharp, so even when they are inserted into both ends of the short axis of the ring, the eccentric shaft rotates due to the restoring force of the ring. The long axis of the ellipse goes to both ends, and in this position, the ring has the original ellipse shape, so there is no restoring force, and the eccentric axis stays stably in the ring.

Here, the eccentric shaft has bistableness at the fully unfolded 180 degree displacement position and the fully folded 0 degree position within the ring, and is unstable and bistable at the intermediate position. For example, at a position above 90 degrees, it is a stable position of 180 degrees. At a position below 90 degrees, there is a tendency to move to a stable position of 0 degrees.

On the other hand, here, a hinge structure with bistableness is proposed using an eccentric shaft and a ring corresponding thereto, but there are several other conventionally known configurations that have mechanical bistableness, and the elevator closing prevention device configuration using this configuration is It is possible.

For example, even in the case of spring hinges, if one side plate and the other side plate are superimposed at an initial state and at a certain angle over 180 degrees fully unfolded, the tendency to move from 180 degrees to the corresponding certain angle to an open stable state is reduced from 0 degrees. Up to 180 degrees can be made to have a tendency to move to a stable state that closes to 0 degrees.

Figure 6 is a view showing a state in the closing prevention position and the release position of another embodiment of the present invention.

Here, an embodiment of another anti-closing device is shown.

Here, the blocking plate 141 may be formed of a rotating plate material coupled to the cage inner door 14 by a rotating shaft under the detection sensor 15. The upper end of the rotating plate is coupled to the inner door of the cage by a rotating shaft, and a protruding locking protrusion 141a is installed at the lower end of the rotating plate.

A receiving portion 143 is installed above the detection sensor 15 to which the protruding locking protrusion 141a can be coupled in the form of a push-pull door lock.

The user rotates the rotating plate 180 degrees upwards around the rotation shaft so that the locking protrusion 141a is pushed into the receiving part 143 to be fastened, and when it is necessary to manually close the door, the locking protrusion of the rotating plate member ( Push the portion 141a) toward the receiving portion 143 once more so that the fastening is released.

The rotating plate protrudes outward due to the action of a spring in the receiving part 143, and is usually rotated 180 degrees by the action of gravity to return to the original release position in the seating groove 145, and the detection sensor 15 operates normally thereafter. If there is no obstacle in front, it acts to close the elevator door.

On the other hand, although not shown separately, the push pull door lock may be made of a push pull door lock in the form of a timer, and the receiving portion may also electrically act as a switch.

For example, if the push-pull door lock is operated in the form of a timer, when the user rotates the rotating plate at first and the locking jaw (141a) is inserted into the receiving part (143) and fixed to the closing prevention position, a warning sound is generated after a certain period of time, such as about 3 minutes. The door lock is released by the action of the timer while paying about 10 seconds, and the rotating plate can be returned to the initial release position.

In this configuration, even though the user must move the elevator from the closed position to the released position after using the elevator, when leaving the elevator in a state of disengagement, it returns to the released position after a certain period of time, so that people on other floors must wait for the elevator for a long time without knowing English. Can solve the problem.

In addition, if the receiving part and the locking jaw coupled thereto can be operated together with an electric switch, there is no significant change when first fastened, but the elevator door will not close for a certain period of time and a warning signal will be issued when it is in the release position due to the action of the timer. It is possible to generate. In this case, if the user still has to open the elevator door and work on it, the rotating plate is rotated again during this warning period, and the locking jaw is inserted into the receiving part to become a closed-prevention position, and more thorough prevention of injuries or accidents caused by accidental door closing. You can do it.

In the above, the present invention has been described through limited embodiments, but this is only illustratively described to aid understanding of the present invention, and the present invention is not limited to these specific embodiments.

Therefore, a person of ordinary skill in the field to which the subject innovation belongs may implement various changes or application examples based on the present design, and it is natural that such modifications or application examples fall within the scope of the appended claims.

1, 11: door frame 2, 12: outer door
3, 13: cage door frame 4, 14: inner door
5, 15: detection sensor 20, 120: anti-closing device
21, 121, 141: blocking plate 22, 122: fixing plate
23, 31, 33: magnet 24: iron plate
121a, 122a: coupling portion
141a: locking jaw 143: receiving portion

Claims (5)

delete delete delete In the elevator closing prevention device provided with a detection sensor configured to open and close the outer door installed on each floor door frame and the inner door installed on the cage door frame together, and detect an object in the inner door to prevent the door from closing,
A blocking plate capable of changing a position so that the detection sensor of the inner door can detect an object on the door closing path according to the user's position setting is in a closed position or a release position,
The blocking plate is made so that accidental positional fluctuations are suppressed by having a means for ensuring stability at least in the closing prevention position,
It consists of a hinge structure having a fixing plate rotatably coupled to the blocking plate and the blocking plate,
In the coupling portion of the hinge structure in which the blocking plate and the fixing plate are rotatable, the rotation center shaft is made of an eccentric shaft whose cross section is deviated from the true circle, and the cross section of the ring coupled with the rotation center shaft by inserting the rotation center shaft is It has a shape similar to the eccentric shaft, but the area with a small inner diameter in the cross section of the ring is made to pass while elastically deforming by applying force when the area with a large radius of the rotation center axis passes, so that it does not have stability, and the radius of the eccentric shaft is A device for preventing closing of an elevator, wherein a plurality of large places exist to have stability when the inner diameter is at a place with a large inner diameter in the cross section of the ring. In the elevator closing prevention device provided with a detection sensor configured to open and close the outer door installed on each floor door frame and the inner door installed on the cage door frame together, and detect an object in the inner door to prevent the door from closing,
A blocking plate capable of changing a position so that the detection sensor of the inner door can detect an object on the door closing path according to the user's position setting is in a closed position or a release position,
The blocking plate is made so that accidental positional fluctuations are suppressed by having a means for ensuring stability at least in the closing prevention position,
The blocking plate is made of a rotating plate material coupled to the inner door by a rotating shaft under the detection sensor, and the upper end of the rotating plate is coupled to the inner door by the rotating shaft, and a protruding locking protrusion is installed at the lower end,
A receiving portion is installed above the detection sensor in which the locking jaw can be coupled in the form of a push-pull door lock, and the rotating plate is rotated upward around the rotation shaft to push the locking jaw into the receiving portion so that the blocking plate is Fastening can be made at a closing prevention position that blocks the detection sensor,
The elevator closing preventing device, characterized in that after a certain period of time in the fastened state, the rotating plate is bounced from the receiving portion and returned to its original release position by the action of gravity.

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