Door opening / closing device, car, and elevator

Abstract

To provide: a door opening / closing device capable of reducing vibration transmitted to a car side plate; a car; and an elevator.SOLUTION: A door opening / closing device 12 comprises a rail holding unit 21, a drive unit 22 and a vibration-proof member 23. The rail holding unit 21 includes a door rail 25 with which car doors 11A and 11B are slidably engaged, and is fitted to a car side plate. The drive unit 22 includes a drive mechanism 26 for slidably moving the car doors 11A and 11B, and a drive mechanism holding part 27 that holds the drive unit 26. The vibration-proof member 23 is interposed between the drive mechanism holding part 27 and the rail holding unit 21.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a door opening and closing device, a car, and an elevator. [Background technology]

[0002] An elevator is equipped with a car that moves up and down within a hoistway. The car has a car chamber, a car frame that supports the car chamber, and a door operating device that opens and closes the entrance to the car chamber. In recent years, there has been a desire to reduce the number of parts in the car frame. To address this, car frames that eliminate the front pillars located on the entrance side of the car chamber have been proposed. Meanwhile, the door operating device is attached to the front pillars of the car frame. Therefore, when the front pillars of the car frame are eliminated, the door operating device is attached to the car side panel of the car chamber.

[0003] Patent Document 1 describes an elevator door opening and closing device. The door opening and closing device described in Patent Document 1 includes a car door, a drive mechanism that transmits the driving force of a drive motor to the car door, and a connecting structure that connects the drive mechanism to the car door via an elastic vibration-proof structure. The vibration-proof structure prevents vibrations from the drive mechanism from being transmitted to the car door. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-94828 Summary of the Invention [Problem to be solved by the invention]

[0005] However, when the door opening and closing device disclosed in Patent Document 1 is attached to the side panel of the car, vibrations from the drive mechanism are transmitted to the side panel of the car, resulting in a problem of a deterioration in the riding comfort of the car.

[0006] In consideration of the above problems, the present invention aims to provide a door opening and closing device, a car, and an elevator that can reduce vibrations transmitted to the car side panels. [Means for solving the problem]

[0007] To solve the above problems and achieve the object, a door opening and closing device embodying one aspect of the present invention includes a car door, a rail holding portion, a drive unit, and a vibration-damping member. The rail holding portion has a rail with which the car door slidably engages and is attached to a car side plate. The drive unit has a drive mechanism that slides the car door and a drive mechanism holding portion that holds the drive mechanism. The vibration-damping member is interposed between the drive mechanism holding portion and the rail holding portion.

[0008] Furthermore, a passenger car embodying one aspect of the present invention includes a car chamber having a plurality of car side panels and having an entrance formed therein, and the door opening and closing device described above for opening and closing the entrance of the car chamber. Furthermore, an elevator embodying one aspect of the present invention includes the passenger car described above that rises and falls in a hoistway. [Effects of the Invention]

[0009] According to the door opening and closing device, car, and elevator having the above configuration, vibrations transmitted to the car side panels can be reduced. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a schematic configuration diagram showing an elevator according to an embodiment. FIG. [Figure 2] 1 is a schematic configuration diagram showing a front view of a door opening and closing device according to an embodiment; [Figure 3] 1 is a diagram showing a state in which a door opening and closing device according to an embodiment is attached to a car side plate. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0011] A door opening and closing device, a car, and an elevator according to an embodiment will be described below with reference to Fig. 1 to Fig. 3. Note that common members in each drawing are given the same reference numerals.

[0012] 1. Elevator configuration First, the configuration of an elevator according to one embodiment will be described with reference to FIG. FIG. 1 is a schematic diagram illustrating an example of the configuration of an elevator according to an embodiment.

[0013] As shown in Figure 1, elevator 1 is a so-called machine room-less elevator that does not have a machine room above an elevator shaft 100 formed within a building structure. Note that the elevator of the present invention is not limited to machine room-less elevators, and may also be an elevator that has a machine room above the elevator shaft 100.

[0014] The elevator 1 has a car 110 that moves up and down in the elevator shaft 100, a hoist 120, a counterweight 130, a first driven pulley 140, a second driven pulley 150, and a rope 170.

[0015] A lifting pulley 111 is provided at the bottom of the car 110. A rope 170 is wound around the lifting pulley 111. A weight-side pulley 131 is provided at the top of the counterweight 130. A rope 170 is wound around the weight-side pulley 131.

[0016] The hoist 120 is disposed at the bottom of the hoistway 100. The hoist 120 raises and lowers the car 110 and the counterweight 130 in a bucket-like manner via a rope 170. The driving of the hoist 120 is controlled by a control unit (not shown). Note that the hoist 120 is not limited to being disposed at the bottom of the hoistway, and may be disposed in the middle of the hoistway 100 in the vertical direction.

[0017] The first driven pulley 140 and the second driven pulley 150 are rotatably attached to the top of the hoistway 100. One end and the other end of the rope 170 are fixed to the top of the hoistway 100. The rope 170 is installed from the weight-side pulley 131 provided on the counterweight 130 to the first driven pulley 140, and then wound around the hoisting machine 120, the second driven pulley 150, and the lifting pulley 111 of the car 110, in that order. The car 110 and the counterweight 130 move up and down within the hoistway 100 in response to the drive of the hoisting machine 120.

[0018] [Car] Next, the configuration of the car 110 will be described. In this embodiment, the front-back, up-down, and left-right directions are defined based on the line of sight of the elevator user facing the car 110. In this case, the near side as seen from the elevator user is the front direction, the far side is the rear direction, the upper side is the top, the lower side is the bottom, the left side is the left side, and the right side is the right side.

[0019] As shown in Figure 1, the elevator car 110 has a car chamber 10 where people and objects get on and off, a pair of car doors 11A and 11B that open and close the entrance and exit of the car chamber 10, and a door opening and closing device 12 that slides the pair of car doors 11A and 11B.

[0020] The car chamber 10 has an internal storage space for carrying luggage and passengers. The car chamber 10 is formed by a car floor, multiple car side panels, and a ceiling. The car floor and ceiling face each other in the vertical direction with the storage space interposed between them. The multiple car side panels are arranged to surround the storage space on all four sides.

[0021] One of the multiple car side panels has a doorway. People and objects enter and exit the car chamber 10 through the doorway. A door opening and closing device 12 is attached to the upper part of the car side panel having the doorway. A car side door sill is disposed below the doorway on the car side panel. The door opening and closing device 12 and the car side door sill support a pair of car doors 11A, 11B so that they can slide left and right.

[0022] The pair of car doors 11A, 11B are each formed in a rectangular shape. A first door hanger 15A is attached to the top end portion of the first car door 11A in the vertical direction. A second door hanger 15B is attached to the top end portion of the second car door 11B in the vertical direction.

[0023] A movable roller (not shown) is rotatably supported on each of the first door hanger 15A and the second door hanger 15B. The movable roller is engaged with a door rail 25 (see FIG. 2) of the door opening and closing device 12, which will be described later, so as to be able to roll.

[0024] [Door opening and closing device] Next, the configuration of the door opening and closing device 12 will be described with reference to FIG. FIG. 2 is a schematic diagram showing the door opening and closing device 12. As shown in FIG.

[0025] As shown in FIG. 2, the door opening and closing device 12 includes a rail holding portion 21, a drive unit 22, and a vibration-isolating member 23.

[0026] The rail holding portion 21 is formed in a generally rectangular shape that is long in the horizontal direction. The rail holding portion 21 is attached to the car side panel above the entrance using screws. A door rail 25 is fixed to the rail holding portion 21. The door rail 25 extends in the left-right direction.

[0027] The drive unit 22 has a drive mechanism 26 that slides the pair of car doors 11A, 11B, and a drive mechanism holder 27 that holds the drive mechanism 26.

[0028] The drive mechanism 26 has a motor 31, a driven pulley 32, and a drive belt 33. The motor 31 and the driven pulley 32 are arranged side by side at a predetermined distance in the left-right direction. A drive shaft 31a of the motor 31 and a rotation shaft of the driven pulley 32 extend in the front-rear direction. The drive belt 33 is wound around the drive shaft of the motor 31 and the driven pulley 32.

[0029] The drive belt 33 is formed endless with both longitudinal ends connected. When the drive shaft of the motor 31 rotates, the drive belt 33 moves circulatingly between the driven pulley 32 and the drive shaft of the motor 31. The drive belt 33 is formed in a ring shape with an upper and lower portion that move in opposite directions in the left-right direction. The first door hanger 15A is connected to the lower portion of the drive belt 33. The second door hanger 15B is connected to the upper portion of the drive belt 33.

[0030] The drive mechanism holding portion 27 has a motor holding portion 35, a pulley holding portion 36, and a connecting portion 37. The motor holding portion 35 holds the motor 31. The pulley holding portion 36 holds the driven pulley 32. The motor holding portion 35 and the pulley holding portion 36 are formed by bending sheet metal so that they have a substantially L-shape when viewed from the side.

[0031] The connecting portion 37 is a member that is long in the left-right direction and is formed, for example, in the shape of a flat plate or an L-shape when viewed from the side. One end of the connecting portion 37 is connected to the motor holding portion 35 using screws, welding, etc., and the other end of the connecting portion 37 is connected to the pulley holding portion 36 using screws, welding, etc. In this way, the drive mechanism holding portion 27 is formed as a single unit. The motor holding portion 35 and pulley holding portion 36 of the drive mechanism holding portion 27 are fixed to the top of the rail holding portion 21 using screws.

[0032] The vibration-isolating member 23 is interposed between the motor holding portion 35 and the pulley holding portion 36 and the rail holding portion 21. For example, vibration-isolating rubber can be used for the vibration-isolating member 23. The vibration-isolating member 23 suppresses the transmission of vibrations of the motor 31 and the driven pulley 32 in the drive mechanism 26 to the rail holding portion 21 via the drive mechanism holding portion 27. This reduces the vibrations transmitted from the door opening / closing device 12 to the car side panels. As a result, discomfort felt by passengers riding in the car 110 can be suppressed, and the ride comfort of the car 110 can be improved.

[0033] If the motor holding part 35 and the pulley holding part 36 were fixed separately to the rail holding part 21, the tension of the drive belt 33 would be transmitted to the vibration-damping member 23, and a load in the shear direction would be applied to the vibration-damping member 23. As a result, the drive belt 33 would bend and would no longer generate the specified tension. On the other hand, in this embodiment, the motor holding part 35 and the pulley holding part 36 are integrated (unitized), so the tension of the drive belt 33 is not transmitted to the vibration-damping member 23, and no problems occur with the tension of the drive belt 33.

[0034] The drive mechanism holder of the present invention may be formed as a single component by bending a metal plate. In this case, the number of components in the door opening and closing device can be reduced. On the other hand, when the motor holder 35 and the pulley holder 36 are connected by the connecting portion 37, the motor holder and the pulley holder that have been conventionally used can be used.

[0035] When the drive belt 33 moves circulatingly, the pair of car doors 11A, 11B slide in the door-opening direction or the door-closing direction via the first door hanger 15A and the second door hanger 15B. The door-opening direction is the direction in which the pair of car doors 11A, 11B move toward each other along the door rail 25. The door-closing direction is the direction in which the pair of car doors 11A, 11B move away from each other along the door rail 25.

[0036] [Installing the door opening / closing device on the car side panel] Next, the attachment of the door opening and closing device 12 to the car side panel will be described with reference to FIG. FIG. 3 is a diagram showing a state in which the door opening and closing device 12 is attached to a car side plate.

[0037] As shown in Fig. 3, the rail holding portion 21 of the door opening and closing device 12 is attached to the car side plate of the car chamber 10 using a first bracket 41 and a second bracket 42. The first bracket 41 and the second bracket 42 have the same shape, and are formed in a roughly U-shape when viewed from the side.

[0038] The first bracket 41 and the second bracket 42 have an upper piece, a lower piece, and a connecting piece. The upper piece and the lower piece face each other at an appropriate distance in the vertical direction. The upper piece and the lower piece are made of plates having flat surfaces that are approximately perpendicular to the vertical direction. The connecting piece is made of a plate having flat surfaces that are approximately perpendicular to the front-to-rear direction. The connecting piece connects the upper piece and the lower piece.

[0039] The connecting piece of the first bracket 41 is fixed to the rail holding portion 21 of the door opening and closing device 12 by using screws, welding, etc. The connecting piece of the second bracket 42 is fixed to the car side plate of the car chamber 10 by using screws, welding, etc.

[0040] The upper piece of the first bracket 41 is fixed to the upper piece of the second bracket 42 using a screw. In Fig. 3, the upper piece of the first bracket 41 is located above the upper piece of the second bracket 42. However, by changing the mounting positions of the first bracket 41 and the second bracket 42, the upper piece of the first bracket 41 may be located below the upper piece of the second bracket 42.

[0041] The lower piece of the first bracket 41 is fixed to the lower piece of the second bracket 42 using a screw. In Fig. 3, the lower piece of the first bracket 41 is located above the lower piece of the second bracket 42. However, by changing the mounting positions of the first bracket 41 and the second bracket 42, the lower piece of the first bracket 41 may be located below the lower piece of the second bracket 42.

[0042] A second vibration-isolating member 43 is interposed between the upper piece of the first bracket 41 and the upper piece of the second bracket 42. In addition, a second vibration-isolating member 43 is interposed between the lower piece of the first bracket 41 and the lower piece of the second bracket 42. The second vibration-isolating member 43 may be made of, for example, vibration-isolating rubber.

[0043] The second vibration-isolating member 43 suppresses the transmission of vibrations of the drive mechanism 26 (see FIG. 2) to the car side plates of the car chamber 10 via the rail holding portion 21. This further reduces the vibrations transmitted from the door opening / closing device 12 to the car side plates. As a result, discomfort felt by passengers riding in the car 110 can be suppressed, and the riding comfort of the car 110 can be improved.

[0044] The door opening and closing device, car, and elevator of the present invention have been described above, including their functions and effects. However, the door opening and closing device, car, and elevator of the present invention are not limited to the above-described embodiments, and various modifications are possible within the scope of the invention as set forth in the claims.

[0045] For example, in the above-described embodiment, the car 110 has a pair of car doors 11A and 11B, which are double-doors. However, the car door according to the present invention may be a door that slides to open and close the entrance of the car, and may be, for example, a single-door.

[0046] In this specification, the words "parallel" and "orthogonal" are used, but these do not mean only "parallel" and "orthogonal" in the strict sense, but also include "parallel" and "orthogonal" and may also mean a "substantially parallel" or "substantially orthogonal" state within a range in which the functions can be exerted. [Explanation of symbols]

[0047] REFERENCE SIGNS LIST 1...Elevator, 10...Cab, 11A, 11B...Cab door, 12...Door opening / closing device, 15A...First door hanger, 15B...Second door hanger, 21...Rail holding portion, 22...Drive unit, 23...Vibration-damping member, 25...Door rail, 26...Drive mechanism, 27...Drive mechanism holding portion, 31...Motor, 31a...Drive shaft, 32...Followered pulley, 33...Drive belt, 35...Motor holding portion, 36...Pulley holding portion, 37...Coupling portion, 41...First bracket, 42...Second bracket, 43...Second vibration-damping member, 100...Hoistway, 110...Cab, 111...Lifting pulley, 120...Hoisting machine, 130...Counterweight, 131...Weight-side pulley, 140...first driven pulley, 150...second driven pulley, 170...rope

Claims

1. a rail holding portion attached to the car side plate, the rail holding portion having a rail with which the car door is slidably engaged; a drive unit including a drive mechanism that slides the car door and a drive mechanism holder that holds the drive mechanism; a vibration-isolating member interposed between the drive mechanism holding portion and the rail holding portion; Door opening and closing device.

2. The drive mechanism includes: A motor; A driven pulley; a drive belt that is wound around a drive shaft of the motor and the driven pulley and to which the car door is connected, The drive mechanism holding portion holds the motor and the driven pulley. The door opening and closing device according to claim 1.

3. The drive mechanism holding portion is a motor holding portion that holds the motor; a pulley holding portion that holds the driven pulley; a connecting portion that connects the motor holding portion and the pulley holding portion, The door opening and closing device according to claim 2.

4. the motor holding portion and the pulley holding portion are attached to the rail holding portion, The vibration-isolating member is interposed between the motor holding portion and the pulley holding portion and the rail holding portion. The door opening and closing device according to claim 3.

5. A second vibration-isolating member is provided between the rail holding portion and the car side plate. The door opening and closing device according to claim 1.

6. a car having a plurality of car side panels and having an entrance / exit formed therein; a door opening and closing device that opens and closes an entrance to the car room, The door opening and closing device is a rail holding portion attached to the car side plate, the rail holding portion having a rail with which the car door is slidably engaged; a drive unit including a drive mechanism that slides the car door and a drive mechanism holder that holds the drive mechanism; a vibration-isolating member interposed between the drive mechanism holding portion and the rail holding portion; Car.

7. An elevator equipped with a car that moves up and down in a hoistway, The car is a car having a plurality of car side panels and having an entrance / exit formed therein; a door opening and closing device that opens and closes an entrance to the car room, The door opening and closing device is a rail holding portion attached to the car side plate, the rail holding portion having a rail with which the car door is slidably engaged; a drive unit including a drive mechanism that slides the car door and a drive mechanism holder that holds the drive mechanism; a vibration-isolating member interposed between the drive mechanism holding portion and the rail holding portion; Elevator.

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