JP6229946B2 - Elevator door opening and closing device - Google Patents

Description

  The present invention relates to an elevator door opening and closing device.

  A general elevator includes a car guide rail for guiding a car and a car, a counterweight, a guide rail for a counterweight, a rope connecting the car and the counterweight, and hoisting in the hoistway. Equipped with a machine.

  The elevator drives the rope by the hoisting machine, thereby moving the car up and down along the guide rail for the car and moving the balance weight up and down along the guide rail for the counterweight.

  The car can move up and down the hoistway and stop at the landing on each floor of the building. The car includes a car-side door opening / closing device. A landing-side door opening / closing device is provided at the landing so as to correspond to the car-side door opening / closing device. These door opening and closing devices are classified into a center open type, a side open type, and the like depending on the door opening and closing method.

  The landing-side door opening / closing device includes an entrance / exit frame provided at the entrance / exit leading from the landing to the hoistway, a door configured to be openable / closable, and a sill that is disposed below the door and guides the door in the opening / closing direction. Is known (see Patent Document 1).

  In this door opening and closing device, a groove for guiding the door is formed in an upper opening shape in the upper part of the sill. A guide shoe (guide portion) that fits in the groove is provided at the lower portion of the door. Thereby, the door is comprised so that a reciprocation is possible along a groove part.

  In the case of the conventional door opening and closing device as described above, since the groove is formed at the upper part of the sill, foreign matter such as dust may enter the groove and may obstruct the opening and closing of the door.

  In order to solve this problem, for example, a door opening / closing device is known in which a groove is formed on the lower surface side of the sill and a guide shoe is inserted into the groove (see Patent Document 2). By doing in this way, the upper part of a sill does not need to form a groove part but is comprised in flat form. Such a threshold is generally called a flat sill.

JP 2012-91895 A JP 2013-151371 A

  In the door opening and closing device having the above configuration, when the door is closed, foreign matter such as an elevator user's luggage may be caught in the door. For example, in a center open type door opening and closing device (2CO) having two doors, when the door is closed, foreign matter is sandwiched between the lower part of the door near the center of the doorway. In this case, the upper part of the door is locked by a locking mechanism (not shown), and a foreign object remains sandwiched between the lower parts of the door, and the two doors are inclined in a letter C shape when viewed from the front. In such a state, although the door is not completely closed, there may be a problem that the door opening / closing device controller recognizes that the door is closed.

This invention is made | formed in view of said situation, and it aims at providing the door opening / closing apparatus of an elevator which can suppress that a door inclines in a door opening / closing direction when closing .

The elevator door opening and closing device according to the present invention includes a door and a threshold for guiding the door in the opening and closing direction. The threshold is provided with a groove for guiding the door. The door includes a guide portion that engages with the groove portion and guides the door, and a support portion that supports the guide portion. The guide part and the bottom part of the groove part are arranged at a predetermined interval. A support part is provided with the contact member which can contact a threshold in order to prevent the inclination with respect to the door opening / closing direction of a door . The distance between the contact member and the threshold is set smaller than the distance between the guide portion and the groove portion.

With a conventional door opening / closing device, when a foreign object comes into contact with the lower part of the door when the door is closed, the door is inclined obliquely in the door opening / closing direction . At this time, the guide part moves toward the bottom part of the groove part. When the guide part comes into contact with the bottom part of the groove part, the door is inclined most in the door opening / closing direction .

On the other hand, according to the present invention, the distance between the contact member and the sill is set to be smaller than the distance between the guide portion and the bottom portion of the groove portion, so that the guide portion reaches before the bottom portion of the groove portion. In addition, the contact member comes into contact with the threshold. Thereby, the inclination of the door in the door opening / closing direction can be suppressed as much as possible.

  In addition, according to the elevator door opening and closing apparatus according to the present invention, it is desirable that the groove is formed at the lower part of the sill and to open downward.

  Further, according to the elevator door opening / closing apparatus of the present invention, it is desirable that the contact member is constituted by a rotatable roller member.

The elevator door opening and closing device according to the present invention includes a door and a threshold for guiding the door in the opening and closing direction. The threshold is provided with a groove for guiding the door. The door includes a guide portion that engages with the groove portion and guides the door, and a support portion that supports the guide portion. The guide part and the bottom part of the groove part are arranged at a predetermined interval. The groove portion includes a contact member that can contact the guide portion at the bottom of the groove portion to prevent the door from being inclined with respect to the door opening / closing direction .

  In the case of a conventional door opening / closing device, when a foreign object comes into contact with the lower portion of the door when the door is closed, the door is inclined obliquely. At this time, the guide part moves toward the bottom part of the groove part. When the guide part contacts the bottom of the groove part, the door is inclined most greatly.

  On the other hand, according to the present invention, since the contact member is provided at the bottom of the groove, the distance between the guide and the bottom of the groove can be made as small as possible. Therefore, the inclination when the door is closed can be suppressed.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to suppress that a door inclines when closing.

FIG. 1 is a perspective view showing the overall configuration of the elevator. FIG. 2 is a side view showing a landing-side door opening / closing device and a car-side door opening / closing device in an elevator. FIG. 3 is a front view of the door in the landing-side door opening / closing device. FIG. 4 is an enlarged front view showing a lower portion of the door. FIG. 5 is a plan view of the door opening and closing device. FIG. 6 is a cross-sectional view taken along the line VI-VI in FIG. FIG. 7 is a plan view showing another embodiment of the door opening and closing device. FIG. 8 is a cross-sectional view of the door opening and closing device. FIG. 9 is a plan view showing another embodiment of the door opening and closing device. FIG. 10 is a cross-sectional view of the door opening and closing device.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. 1 to 6 show an embodiment of the present invention. FIG. 1 is a perspective view showing the overall configuration of the elevator. FIG. 1 illustrates a so-called machine roomless type elevator that does not have a machine room.

  As shown in FIG. 1, the elevator has a car 2, a first guide rail 3 for guiding the car 2, a counterweight 4, and a second guide rail for guiding the counterweight 4 in the hoistway 1. 5, a rope 6 that connects the car 2 and the counterweight 4, and a hoisting machine 7.

  Furthermore, a return wheel 8 for winding the rope 6 is disposed on the upper part of the hoistway 1. In the lower part of the hoistway 1, a control panel 9 for controlling the hoisting machine 7, a speed governor 10 for regulating the speed of the elevator, and a shock absorber 11 are further provided.

  The elevator moves the car 2 up and down along the first guide rail 3 by driving the hoisting machine 7 via the control panel 9. The hoisting machine 7 includes a traction sheave 12, and can drive the car 2 up and down by driving the rope 6 through the traction sheave 12.

  Since the counterweight 4 is connected to the car 2 via the rope 6, the counterweight 4 moves up and down along the second guide rail 5 in accordance with the vertical movement of the car 2, contrary to the movement of the car 2. By connecting the counterweight 4 to the car 2, the hoisting machine 7 can move the car 2 up and down with small power. The governor 10 can stop the car 2 when the speed of the vertical movement of the car 2 exceeds a specified value. When the shock absorber 11 comes into contact with the car 2, the shock can be reduced.

  The car 2 can move up and down the hoistway 1 and can stop at a landing 13 provided on each floor of the building. As shown in FIG. 2, the car 2 includes a car-side door opening / closing device 14. A landing-side door opening / closing device 15 is provided at the landing 13 so as to correspond to the car-side door opening / closing device 14. FIG. 2 shows a so-called center open type as an example of these door opening and closing devices 14 and 15.

  As shown in FIG. 2, the car-side door opening / closing device 14 includes a plurality of (for example, two) doors 14A and a sill 14B. The door 14 </ b> A is supported by an upper frame 16 provided integrally with the upper portion of the car 2. The upper frame 16 is provided with a door rail 17 for guiding the door 14A. A door hanger 18 supported by the door rail 17 is provided on the upper portion of the door 14A. The door hanger 18 is provided with a plurality of rollers 19 that engage with the door rail 17. The door 14 </ b> A is configured to move in the opening / closing direction via a driving device (not shown) with the roller 19 of the door hanger 18 engaged with the door rail 17. The drive device includes a drive motor for driving the door, a sensor capable of detecting the torque of the drive motor, and the like.

  The threshold 14 </ b> B is supported by the lower frame 20 provided at the lower part of the car 2. This threshold 14B has a groove 21 for guiding the door 14A. The groove part 21 is formed in the upper part of the sill 14A, and is configured in an upper opening shape. A guide portion (guide shoe) 22 provided in the lower portion of the door 14A is fitted in the groove portion 21. The groove portion 21 of the threshold 14B guides the guide portion 22 along the opening / closing direction of the door 14A as the door 14A moves.

  As shown in FIGS. 2 to 4, the landing-side door opening / closing device 15 includes a plurality of (for example, two) doors 15A and a sill 15B. The door 15 </ b> A is supported by a frame body 26 provided at the hall 13. The frame body 26 is provided with a frame 27 for supporting the upper portion of the door 15A. The frame 27 is provided with a door rail 28 for guiding the door 15A. A door hanger 29 is provided on the upper portion of the door 15A. The door hanger 29 is provided with a plurality of rollers 30 that engage with the door rail 28. The door 15 </ b> A moves in the opening / closing direction by engaging the driving device (not shown) for driving the car-side door opening / closing device 14 with the roller 30 of the door hanger 29 engaged with the door rail 28. Is configured to do.

  As shown in FIG. 2, the threshold 15 </ b> B is supported by a support frame 31 provided on the wall surface of the hoistway 1. In addition to the sill 15B, the support frame 31 supports a protection member 32 for preventing the toe of the elevator user from being caught between the lower portions of the sill 15B. As shown in FIG. 2, the threshold 15 </ b> B and the protection member 32 are fixed to the support frame 31 by fastening means 33 including bolts and nuts. 3 and the subsequent drawings, the support frame 31, the protection member 32, and the fastening means 33 are omitted.

  The sill 15B is made of metal and is formed in a long shape by, for example, extrusion molding. As shown in FIGS. 5 and 6, the threshold 15 </ b> B is formed with a groove 35 for guiding the door 15 </ b> A in the lower portion 151 of the threshold 15 </ b> B. The groove part 35 is comprised linearly along the longitudinal direction of the sill 15B. The sill 15B is a flat sill type configured such that the groove 35 opens downward.

  As shown in FIGS. 2, 5, and 6, the door 15 </ b> A engages with the groove 35 and guides the door 15 </ b> A, and a support that supports the guide 36. (Bracket) 37 and a contact member 38 capable of contacting the threshold 15B. As shown in FIG. 4, the guide part 36 and the support part 37 are the lower part 150 of the door 15A, and are arrange | positioned at the both ends (two places) in the width direction of the door 15A.

  The guide portion 36 is an elastic body formed of a synthetic resin material such as rubber. The guide part 36 is configured as a long plate member. The guide part 36 is fitted in the groove part 35, but does not contact the inner surface of the groove part 35. The upper end portion 36 a of the guide portion 36 is separated from the bottom portion 35 a of the groove portion 35. That is, as shown in FIG. 6, the upper end part 36a of the guide part 36 and the bottom part 35a of the groove part 35 are arrange | positioned at predetermined intervals C1.

  The support part 37 is made of metal and is configured in a long plate shape. The support portion 37 is formed into a predetermined shape by, for example, press molding. As shown in FIG. 6, the support part 37 is attached with a first support part 37 a arranged along the vertical direction, a second support part 37 b arranged along the horizontal direction, and the guide part 36. And a third support portion 37c.

  As shown in FIG. 6, one end portion of the first support portion 37 a is fixed to the lower portion of the side surface of the door 15 </ b> A via the attachment member 40. The other end of the first support portion 37a is formed integrally with the second support portion 37b. The second support part 37b is formed between the first support part 37a and the third support part 37c. The third support portion 37c is formed integrally with the second support portion 37b. The 3rd support part 37c is formed so that it may become a right angle with respect to the 2nd support part 37b, and it is formed so that it may protrude upwards. The distal end portion of the third support portion 37 c is provided inside the guide portion 36.

  The contact member 38 is an elastic body formed of a synthetic resin such as rubber. As shown in FIG. 6, the contact member 38 is fixed to the upper surface 39 of the second support portion 37b. Usually, the contact member 38 is not in contact with the lower portion 151 of the sill 15B and is separated from the sill 15B. An interval C2 between the contact member 38 and the sill 15B is set to be smaller than an interval C1 between the guide portion 36 and the bottom portion 35a of the groove portion 35.

  According to the elevator door-side door opening / closing device 15 described above, when a foreign object comes into contact with the lower portion 150 of the door 15A when the door 15A is closed, the upper portion of the door 15A moves in the closing direction before the lower portion 150. To do. As a result, the two doors 15 </ b> A tend to be inclined in a C shape when viewed from the front. At this time, the guide part 36 tends to move upward along the groove part 35. However, since the distance C2 between the contact member 38 and the lower part 151 of the sill 15B is smaller than the distance C1 between the upper end part 36a of the guide part 36a and the bottom part 35a of the groove part 35 in the sill 15B, the guide part 36 has the groove part 35. Prior to contacting the bottom 35a, the contact member 38 contacts the lower portion 151 of the sill 15B.

  Thereby, the guide part 36 does not contact the bottom part 35a of the groove part 35, and the inclination of the door 15A is suppressed. When the contact member 38 comes into contact with the lower portion 151 of the sill 15B, it is desirable to detect excessive torque acting on the drive motor that drives the door 15A with a sensor and perform control to reverse the door 15A so that the door 15A opens. .

  7 and 8 show another embodiment of the door opening and closing device (the landing-side door opening and closing device 15) according to the present invention. In the present embodiment, the position of the contact member 38 is different from the example of FIG. In the example of FIG. 6, the contact member 38 is provided on the second support portion 37 b of the support portion 37, but in this embodiment, the contact member 38 is provided on the bottom portion 35 a of the groove portion 35 in the sill 15 </ b> B. .

  According to the present embodiment, the contact member 38 is provided on the bottom 35a of the groove 35 in the sill 15B, so that the upper end 36a of the guide 36 and the bottom 35a of the groove 35 are compared with the conventional door opening and closing device. The interval can be made as small as possible. Accordingly, the inclination of the door 15A due to the guide portion 36 moving upward can be suppressed.

  9 and 10 show another embodiment of the door opening / closing device (the landing-side door opening / closing device 15) according to the present invention. In this embodiment, the structure of the support part 37 and the contact member 38 differs from the example of FIG. In the present embodiment, as shown in FIG. 9, the first support portion 37 a of the support portion 37 includes a shaft portion 41 that rotatably supports the contact member 38. The shaft portion 41 is fixed to the first support portion 37a so as to protrude toward the landing 13 along the horizontal direction.

  The contact member 38 is a roller member that is rotatably supported by the shaft portion 41 of the first support portion 37a. The contact member 38 is disposed below the threshold 15B. The distance C2 between the contact member 38 and the lower part 151 of the sill 15B is set to be smaller than the distance C1 between the upper end part 36a of the guide part 36 and the bottom part 35a of the groove part 35 of the sill 15B.

  According to this embodiment, when the contact member 38 contacts the lower part 151 of the sill 15B, the door 15A can be moved without being inclined. In this case, the contact member 38 rotates while being in contact with the threshold 15B, and can follow the movement of the door 15A.

  The elevator door opening and closing device according to the present invention is not limited to the configuration of the above embodiment. Further, the elevator door opening and closing apparatus according to the present invention is not limited to the above-described effects. The elevator door opening and closing apparatus according to the present invention can be variously modified without departing from the gist of the present invention.

  In the above embodiment, the example in which the present invention is applied to the landing side door opening / closing device 15 has been described. However, the present invention can also be applied to the car side door opening / closing device 14. The present invention is also applicable to a door opening / closing device using a sill other than the flat sill type.

  In the above embodiment, the center open type door opening and closing devices 14 and 15 are exemplified, but the present invention is not limited to this and can be applied to a side open type door opening and closing device.

  In the above embodiment, the landing-side door opening / closing device 15 in which the sill 15B is provided below the door 15A is illustrated, but the present invention is not limited to this. For example, the present invention can also be applied to a door opening and closing device in which a sill 15B is provided above the door 15A and configured to guide the guide unit 36.

  DESCRIPTION OF SYMBOLS 1 ... Hoistway, 2 ... Car, 3 ... 1st guide rail, 4 ... Counterweight, 5 ... 2nd guide rail, 6 ... Rope, 7 ... Hoisting machine, 8 ... Return wheel, 9 ... Control board, 10 ... Speed governor, 11 ... shock absorber, 12 ... traction sheave, 13 ... landing, 14 ... car side door opening / closing device, 14A ... door, 14B ... sill, 15 ... landing side door opening / closing device, 15A ... door, 15B ... sill, 16 ... Upper frame, 17 ... Door rail, 18 ... Door hanger, 19 ... Roller, 20 ... Lower frame, 21 ... Groove, 22 ... Guide part, 26 ... Frame, 27 ... Frame, 28 ... Door rail, 29 ... Door hanger, 30 ... Roller, 31 ... support frame, 32 ... protective member, 33 ... fastening means, 35 ... groove, 35a ... bottom of groove, 36 ... guide, 36a ... upper end of guide, 37 ... support, 37a ... first support Part, 37b ... 2nd branch , 37c: third support, 38: contact member, 39: upper surface of second support, 40: mounting member, 41: shaft, 150: lower part of door 15A, 151: lower part of sill 15B, C1: guide Between the bottom and the bottom of the groove, C2, ... the distance between the contact member and the sill 15B

Claims (4)

In an elevator door opening and closing device comprising a door and a threshold for guiding the door in the opening and closing direction,
The threshold includes a groove for guiding the door,
The door includes a guide portion for engaging the groove portion and guiding the door, and a support portion for supporting the guide portion,
The guide part and the bottom part of the groove part are arranged at a predetermined interval,
The support portion includes a contact member that can contact the sill to prevent the door from tilting with respect to a door opening / closing direction ,
The door opening / closing device for an elevator, wherein an interval between the contact member and the sill is set to be smaller than an interval between the guide portion and the groove portion.   The elevator door opening and closing device according to claim 1, wherein the groove portion is formed at a lower portion of the sill and is formed to open downward.   The elevator door opening and closing device according to claim 1, wherein the contact member is constituted by a rotatable roller member. In an elevator door opening and closing device comprising a door and a threshold for guiding the door in the opening and closing direction,
The threshold includes a groove for guiding the door,
The door includes a guide portion for engaging the groove portion and guiding the door, and a support portion for supporting the guide portion,
The guide part and the bottom part of the groove part are arranged at a predetermined interval,
The said groove part is a door opening / closing apparatus of an elevator provided with the contact member which can contact the said guide part in the bottom of the said groove part, in order to prevent the inclination with respect to the door opening / closing direction of the said door.

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