CN109422183B - Door device for elevator car - Google Patents
Door device for elevator car Download PDFInfo
- Publication number
- CN109422183B CN109422183B CN201710771532.9A CN201710771532A CN109422183B CN 109422183 B CN109422183 B CN 109422183B CN 201710771532 A CN201710771532 A CN 201710771532A CN 109422183 B CN109422183 B CN 109422183B
- Authority
- CN
- China
- Prior art keywords
- cam
- door
- arc surface
- door panel
- car
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
- B66B13/02—Door or gate operation
- B66B13/06—Door or gate operation of sliding doors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
- B66B13/02—Door or gate operation
- B66B13/14—Control systems or devices
- B66B13/143—Control systems or devices electrical
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Power-Operated Mechanisms For Wings (AREA)
- Elevator Door Apparatuses (AREA)
Abstract
The invention provides a car door device of an elevator, which prevents a door panel from moving under the condition of no preparation. The present invention is a door plate restricting device for restricting movement of a door plate at a fully open position and a fully closed position, the opening and closing device including: a rack and pinion directly or indirectly coupled to the door panel; and a pinion gear that is engaged with the rack gear and is driven by the motor to rotate, the door plate restricting device including: a rotary cam concentrically coupled to the pinion gear and having a cam surface on an outer periphery thereof; a contact body capable of being in contact with the cam surface of the rotating cam; and an elastic body that urges the abutting body toward the cam surface, the cam surface including: a circular arc surface having a constant curvature radius from the center of rotation; a first restriction surface having a distance from a rotation center of the rotary cam shorter than a curvature radius of the circular arc surface; and a second limiting surface having a distance from the rotation center of the rotating cam shorter than the radius of curvature of the circular arc surface.
Description
Technical Field
The present invention relates to a car door device for an elevator, which includes a door panel that opens and closes a car doorway of a car that is moving up and down in a hoistway.
Background
An elevator includes a car that ascends and descends (moves up and down) along an elevator shaft provided in a structure such as a building having a plurality of floors and can stop at a floor designated by a user.
The car has a car body having a car doorway through which a user can enter and exit, and a door device that opens and closes the car doorway of the car body.
Generally, a door device includes: and an opening/closing device that moves the door panel to open and close the car doorway, wherein the door panel is disposed so as to correspond to the car doorway of the car body and is provided so as to be movable in a lateral direction orthogonal to the vertical direction.
In such a door device, for example, the opening and closing device includes: a motor having an output shaft; a pinion gear concentrically coupled to the output shaft; and a rack gear that meshes with the pinion gear (see, for example, patent document 1).
The rack gear extends in the moving direction of the door panel (in the same direction as the track of the door panel) and is directly or indirectly coupled to the door panel.
In such an opening/closing device, since the rack gear is engaged with the pinion gear, when the pinion gear is driven by the motor to rotate, the rack gear moves in a direction in which the rack gear extends. Therefore, the door panel disposed corresponding to the car doorway moves together with the movement of the rack and pinion, and the car doorway is opened and closed.
However, in the opening/closing device having the above-described configuration, the pinion gear that meshes with the rack gear coupled to the door panel is provided so as to be rotatable in a state where the driving of the motor is stopped. Therefore, when a force in a direction to open and close the car doorway acts on the door panel, the movement of the rack gear coupled to the door panel is not restricted by the pinion, and the door panel moves.
In addition, although some motors are provided with braking devices, if a force in a direction to open and close the car doorway acts on the door panel when a failure occurs in the braking devices, the rack gear connected to the door panel and the pinion gear meshing with the rack gear are not restricted by the braking devices of the motors, and may move in a follow-up manner.
Therefore, in the opening/closing device having the above-described configuration, the door panel may move in a state where the door panel fully opens the car doorway and a state where the car doorway is fully closed.
Documents of the prior art
Patent document
Patent document 1: specification of U.S. Pat. No. 67084128
Disclosure of Invention
Problems to be solved by the invention
The invention provides a car door device of an elevator, which can prevent a door plate from moving without preparation when the door plate is in a fully closed state and a fully opened state relative to a car doorway of a car body.
Means for solving the problems
The door device for an elevator car of the present invention comprises: a door panel movably provided on a rail and configured to be capable of reciprocating between a fully closed position for fully closing a car doorway provided on a car body accommodating users and a fully open position for fully opening the car doorway; an opening/closing device for moving the door panel between a fully closed position and a fully open position; and a door plate restricting device which restricts the movement of the door plate in a state where the door plate is at the fully open position and the fully closed position, the opening and closing device including: a single motor; a rack and pinion extending in the same direction as the rail of the door panel and directly or indirectly coupled to the door panel; and a pinion gear that is meshed with the rack gear and is driven by the motor to rotate, the pinion gear being provided so as to rotate by one or less turns when the door panel moves from the fully closed position to the fully open position and when the door panel moves from the fully open position to the fully closed position, the door panel regulating device including: a rotary cam concentrically coupled to the pinion gear and having a cam surface on an outer periphery thereof; an abutting body provided to be capable of abutting against the cam surface of the rotating cam; and an elastic body that urges the abutting body toward the cam surface, the cam surface including: a circular arc surface having a constant curvature radius from the rotation center of the rotary cam; a first restriction surface adjacent to one end side in the circumferential direction of the arc surface and having a distance from the rotation center of the rotary cam shorter than the radius of curvature of the arc surface; and a second regulating surface adjacent to the other end side in the circumferential direction of the arc surface and having a distance from the rotation center of the rotating cam shorter than the radius of curvature of the arc surface, wherein an angle formed by an imaginary line connecting the rotation center of the rotating cam and one end of the arc surface in the circumferential direction and an imaginary line connecting the rotation center of the rotating cam and the other end of the arc surface in the circumferential direction is set smaller than a rotation angle of the pinion when the door panel moves from the fully closed position to the fully open position or from the fully open position to the fully closed position.
As one aspect of the present invention, it is preferable that the abutting body is a cam follower which is rotatable about an axis extending in the same direction as the extending direction of the rotation center of the rotating cam.
As another aspect of the present invention, it is preferable that the door panel regulating device includes a support mechanism that supports the abutting body so that the abutting body can move in a radial direction of the rotating cam.
In this case, the support mechanism may include a lever extending in one direction and having a first end and a second end located on an opposite side of the first end in the one direction, the lever being freely rotatable about an axis extending in the same direction as a rotation center of the contact body at an intermediate position between the first end and the second end, the contact body being attached to the first end of the lever, and the elastic body pressing the second end of the lever.
In another aspect of the present invention, the cam surface of the rotary cam may include a plane connecting one end and the other end of the arc surface in the circumferential direction, a region adjacent to the one end of the arc surface in the plane may be defined as a first restriction surface, and a region adjacent to the other end of the arc surface in the plane may be defined as a second restriction surface.
ADVANTAGEOUS EFFECTS OF INVENTION
The present invention can obtain an excellent effect of preventing the door panel from moving without preparation in a state where the door panel is fully closed and fully opened with respect to the car doorway of the car body.
Drawings
Fig. 1 is a schematic partial perspective view of an elevator according to an embodiment of the present invention.
Fig. 2 is a schematic perspective view of the elevator of the present embodiment as viewed from above the car.
Fig. 3 is a schematic plan view of a car including a car door device according to the present embodiment.
Fig. 4 is a partially enlarged view of the car door device according to the present embodiment including the opening/closing device.
Fig. 5 is a partial side view of the periphery of the motor of the car door device according to the present embodiment.
Fig. 6 is a partial side view of the periphery of a pinion on one side of a car door device according to the present embodiment.
Fig. 7 is a partial side view of the periphery of the pinion on the other side of the car door device according to the present embodiment.
Fig. 8 is a partially enlarged view of the car door device according to the present embodiment including the door panel regulating device.
Fig. 9 is a partially enlarged view of the car door device according to the present embodiment including the door panel regulating device.
Fig. 10 is a partially enlarged view of the car door device according to the present embodiment including the door panel regulating device.
Detailed Description
An embodiment of the present invention will be described below with reference to the drawings.
As shown in fig. 1, an elevator 1 includes a car 2, and the car 2 is raised and lowered (moved up and down) along a hoistway R provided in a structure such as a building having a plurality of floors F, and the car 2 can stop at the floor F designated by a user.
As shown in fig. 2, the car 2 includes: the car body 3 has a car doorway 300 for a user to get in and out of the elevator at a designated floor F, and the car door apparatus 4 (hereinafter simply referred to as "door apparatus") includes door panels 40a and 40b that open and close the car doorway 300 of the car body 3.
The car body 3 defines a cylindrical housing space for housing users. Specifically, the car body 3 includes: a cylindrical peripheral wall portion 30; a ceiling portion 31 located above the peripheral wall portion 30; and a floor portion 32 located below the peripheral wall portion 30. The peripheral wall portion 30 is provided with a car doorway 300. The car doorway 300 has a rectangular shape when viewed from the front.
A guide rail 33 formed corresponding to the rails DRa, DRb of the door panels 40a, 40b is provided below the car doorway 300 of the car body 3, and the guide rail 33 guides the lower portions of the door panels 40a, 40 b. The tracks DRa, DRb of the door panels 40a, 40b when the car doorway 300 is opened and closed are set to be arcuate, and the detailed configuration will be described later. Accordingly, the guide rail 33 is formed in an arc shape as viewed in the vertical direction so as to correspond to the rails DRa, DRb of the door panels 40a, 40 b.
The gate device 4 includes: the pair of door panels 40a and 40b are movably provided on arcuate rails DRa and DRb that have the same or substantially the same radii of curvature Ra and Rb and the centers of curvature CP1 and CP2, and open/close means 41 for moving the pair of door panels 40a and 40b closer to and away from each other, and for opening and closing a car doorway 300 provided in a car body 3 accommodating users. The door apparatus 4 further includes a door panel regulating device 42 for regulating the movement of the door panels 40a and 40b along the rails DRa and DRb in a state where the door panels 40a and 40b fully open the car doorway 300 and in a state where the car doorway 300 is fully closed.
In the present embodiment, the pair of door panels 40a and 40b are arranged laterally side by side. The pair of door panels 40a and 40b each have a first end and a second end located on the opposite side of the first end in a direction orthogonal to the vertical direction. The pair of door panels 40a and 40b have first ends that contact each other in a state where the car doorway 300 is closed, and have first ends that are separated from each other in a state where the car doorway 300 is opened (not shown). That is, the pair of door panels 40a and 40b are moved in opposite directions, and are changed in position between a fully closed position P1 where the first ends of the door panels are brought into contact with each other to close the car doorway 300 and a fully open position P2 where the first ends of the door panels are separated from each other to open the car doorway 300.
In the present embodiment, as shown in fig. 2 and 3, the pair of door panels 40a and 40b are formed in an arc shape as viewed in the vertical direction so as to correspond to the trajectories DRa and DRb of the movement thereof. The curvature centers CP3 of the pair of door panels 40a and 40b coincide with the curvature centers CP1 and CP2 of the arcuate rails DRa and DRb, respectively.
In the present embodiment, the center of curvature CP3 of each of the pair of door panels 40a and 40b coincides with the center of curvature CP4 of the peripheral wall portion 30 located on both sides of the car doorway 300 of the car body 3. In the present embodiment, since the peripheral wall portion 30 of the car body 3 is formed in a cylindrical shape, the center of curvature CP3 of the pair of door panels 40a and 40b coincides with the center (center of curvature CP4) of the peripheral wall portion 30. Accordingly, the pair of door panels 40a and 40b move along the peripheral wall portion 30 when moving on the rails DRa and DRb (when changing the position between the fully closed position P1 and the fully open position P2).
As shown in fig. 3 and 4, the opening/closing device 41 includes: a single motor 410; a pair of rack gears 411a, 411b provided corresponding to the pair of door panels 40a, 40b, respectively, and directly or indirectly connected to the corresponding door panels 40a, 40b, respectively; a pair of pinions 412a, 412b provided in correspondence with the pair of rack gears 411a, 411b, respectively, and meshing with the corresponding rack gears 411a, 411b, respectively; and a drive transmission mechanism 413 for transmitting the drive of the motor 410 to the pair of pinions 412a and 412b to move the pair of rack gears 411a and 411b in opposite directions. The opening/closing device 41 of the present embodiment includes a pair of arms 414a and 414b that couple a pair of rack gears 411a and 411b to the corresponding door panels 40a and 40b, respectively.
In the present embodiment, the opening/closing device 41 is supported by the ceiling portion 31 of the car body 3. Specifically, the opening/closing device 41 is supported by the ceiling portion 31 of the car body 3 in a state of being disposed above the ceiling portion 31.
In the present embodiment, the motor 410 is an electric motor. Further, the motor 410 may be a motor with a reduction gear, and in the present embodiment, a motor (for example, a stepping motor, a pulse motor, a servo motor, or the like) whose output is adjusted by electrical control is used.
As shown in fig. 5, the motor 410 has an output shaft (not numbered). The motor 410 positions the output shaft in the vertical direction. In the present embodiment, the opening/closing device 41 has a base 415 to be coupled to the ceiling portion 31 of the car body 3, and the motor 410 is fixed via a bracket 416 coupled to the base 415.
Returning to fig. 4, the pair of rack gears 411a, 411b are formed in arc shapes corresponding to the tracks DRa, DRb of the corresponding door panels 40a, 40b, respectively. The respective curvature centers CP5, CP6 of the pair of rack gears 411a, 411b coincide with or substantially coincide with the curvature centers CP1, CP2 of the circular arc-shaped rails DRa, DRb. The radii of curvature Rc and Rd of the pair of rack gears 411a and 411b are the same.
Specifically, the pair of rack gears 411a and 411b each have a plurality of teeth (not numbered) that are aligned in the extending direction thereof and mesh with the pinions 412a and 412 b. The pair of rack gears 411a, 411b have the same number of teeth. In each of the rack gears 411a and 411b, a plurality of teeth are arranged along arc-shaped imaginary lines (so-called "reference lines" dividing the tooth height into a tooth root height and a tooth tip height) BL1 and BL 2. The curvature centers CP5 and CP6 of the arc-shaped virtual lines (reference lines BL1 and BL2) are aligned or substantially aligned with the curvature centers CP1 and CP2 of the arc-shaped rails DRa and DRb. The reference lines BL1, BL2 of the pair of rack gears 411a, 411b have the same radii of curvature Rc, Rd, respectively.
In the present embodiment, the rack gear 411a on the one side has a plurality of teeth on the outer periphery that mesh with the corresponding pinion gear 412a, and the rack gear 411b on the other side has a plurality of teeth on the inner periphery that mesh with the corresponding pinion gear 412 b.
As shown in fig. 6 and 7, the pair of pinions 412a and 412b are rotatably attached to shafts (not numbered) fixed to the base 415. The pair of pinions 412a, 412b are identical gears. That is, the module, the number of teeth, the pitch circle diameter, the number of teeth, the tooth width, and the tooth height of the pair of pinions 412a and 412b are the same.
In the present embodiment, the pair of pinions 412a, 412b are set such that the pair of pinions 412a, 412b rotate by one or less (one or less rotation) when the door panels 40a, 40b move from the fully closed position P1 to the fully open position P2 and when the door panels 40a, 40b move from the fully open position P2 to the fully closed position P1, respectively.
Referring back to fig. 4, in the present embodiment, as described above, the rack gear 411a on the one side has a plurality of teeth on the outer periphery thereof which mesh with the corresponding pinion 412a, and the rack gear 411b on the other side has a plurality of teeth on the inner periphery thereof which mesh with the corresponding pinion 412b, and the curvature centers CP5 and CP6 of the reference lines BL1 and BL2 of the two rack gears 411a and 411b coincide or substantially coincide with the curvature centers CP1 and CP2 of the circular-arc-shaped rails DRa and DRb, and the curvature radii Rc and Rd of the reference lines BL1 and BL2 of the pair of rack gears 411a and 411b are the same.
Accordingly, the distance from the meshing position of the one rack gear 411a and the one pinion gear 412a to the curvature center CP1 of the circular arc shaped rail DRa is the same as or substantially the same as the distance from the meshing position of the other rack gear 411b and the other pinion gear 412b to the curvature center CP2 of the circular arc shaped rail DRb.
In the present embodiment, the drive transmission mechanism 413 includes: a first rotating body 413a (see fig. 5) that rotates upon being driven by the motor 410; a second rotating body 413b (see fig. 6) concentrically coupled to the pinion gear 412a on one side; a third rotating body 413c (see fig. 7) having the same diameter as the second rotating body 413b and concentrically coupled to the pinion 412b on the other side; and an endless ring-shaped body 413d that is hung on the first rotating body 413a, the second rotating body 413b, and the third rotating body 413c and transmits the rotation of the first rotating body 413a to the second rotating body 413b and the third rotating body 413 c.
In the present embodiment, the first rotating body 413a, the second rotating body 413b, and the third rotating body 413c are toothed pulleys, and the endless ring body 413d is a toothed belt. In the present embodiment, the second rotating body 413b and the third rotating body 413c are set to have the same diameter.
In the present embodiment, the reduction ratios of the second rotating body 413b and the third rotating body 413c with respect to the first rotating body 413a are the same or substantially the same as the ratio of the distance from the orbits DRa, DRb to the center of curvature CP1 of the orbits DRa, DRb to the distance from the meshing positions of the rack gears 411a, 411b and the pinions 412a, 412b to the centers of curvature CP1, CP2 of the orbits DRa, DRb.
One arm 414a is coupled to one rack gear 411a and one door panel 40a, and the other arm 414b is coupled to the other rack gear 411b and the other door panel 40b (see fig. 3).
In the present embodiment, the pair of arms 414a and 414b support the pair of door panels 40a and 40b, respectively, so that the pair of door panels 40a and 40b can move on the arcuate rails DRa and DRb, respectively. Specifically, the pair of arms 414a and 414b each have a first end portion and a second end portion located on the opposite side of the first end portion, and are provided so as to be rotatable about the first end portion as a rotation center. The rotation centers of the pair of arms 414a and 414b are concentric, and the curvature centers CP1 and CP2 of the tracks DRa and DRb are also concentric. In the present embodiment, one end of each of the pair of arms 414a and 414b is rotatably attached to a common shaft (not numbered) fixed to the base 415, that is, a shaft concentric with the curvature centers CP1 and CP2 of the tracks DRa and DRb. The second end portions of the pair of arms 414a and 414b are coupled to the corresponding door panels 40a and 40 b.
In the present embodiment, the pair of arms 414a and 414b are coupled to the corresponding rack gears 411a and 411b at predetermined positions between the first end and the second end, respectively.
As shown in fig. 8, the door plate regulating device 42 includes: a rotary cam 420 having a cam surface 421 on the outer periphery; an abutting body 422 provided so as to be capable of abutting against the cam surface 421 of the rotating cam 420; and an elastic body 423 that urges the abutting body 422 against the cam surface 421. In the present embodiment, the door panel regulating device 42 includes a support mechanism 424 that supports the contact body 422, and the support mechanism 424 is capable of moving the contact body 422 in the radial direction of the rotating cam 420.
In the present embodiment, the rotating cam 420 is coupled to the pinion gear 412b on the other side. The cam surface 421 of the rotating cam 420 includes: a circular arc surface 421a having a constant radius of curvature from the rotation center of the rotating cam 420; a first regulating surface 421b adjacent to one end side of the circular arc surface 421a in the circumferential direction and having a distance from the rotation center of the rotating cam 420 shorter than the radius of curvature of the circular arc surface 421 a; and a second regulating surface 421c adjacent to the other end side of the circular arc surface 421a in the circumferential direction and having a distance from the rotation center of the rotating cam 420 shorter than the radius of curvature of the circular arc surface 421 a.
The center of curvature of the circular arc surface 421a coincides with the rotation center of the pinion 412 on the other side. The range of formation of the arc surface 421a (the circumferential length from one end to the other end in the circumferential direction) is set to be smaller than the range of rotation in which the pinion 412b rotates when the door panels 40a, 40b open and close the car doorway 300. That is, the angular range θ formed by the arc surface 421a (the angular range based on the center of the rotating cam 420) is set to be smaller than the rotation angle of the pinion 412b when the door panels 40a and 40b move from the fully closed position P1 to the fully open position P2 and when the door panels 40a and 40b move from the fully open position P2 to the fully closed position P1.
In the present embodiment, the first and second limiting surfaces 421b and 421c are each formed of a flat surface. Specifically, in the present embodiment, the cam surface 421 of the rotating cam 420 includes a flat surface 421d connecting both ends of the circular arc surface 421a in the circumferential direction, a region of the flat surface 421d adjacent to one end of the circular arc surface 421a in the circumferential direction is a first limiting surface 421b, and a region of the flat surface 421d adjacent to the other end of the circular arc surface 421a in the circumferential direction is a second limiting surface 421 c.
In the present embodiment, the contact body 422 is formed in a disc shape or a cylindrical shape, and the contact body 422 positions the center line in the same direction as the direction in which the rotation center of the rotating cam 420 extends. In this embodiment, the abutment body 422 is constituted by a cam follower, which is free to rotate about its center.
The elastic body 423 employs a compression coil spring. In the present embodiment, the support mechanism 424 has the following structure, and the elastic body (coil spring) 423 is put in a compressed state, thereby pressing the abutting body 422 against the cam surface 421 of the rotating cam 420.
The support mechanism 424 has: a support bracket 424a fixed to the base 415; and a rod 424b rotatably mounted to the support bracket 424 a. In the present embodiment, the support mechanism 424 further includes a transmission member 424c that transmits the elastic force (urging force) of the elastic body 423 to the rod 424 b.
The rod 424b extends in a direction, and has a first end portion and a second end portion located on the opposite side of the first end portion in the direction. An intermediate position between the first end and the second end in the rod 424b is mounted on the support bracket 424a in a freely rotatable manner about an axis extending in the same direction as the rotational center of the abutting body 422.
A contact body (cam follower) 422 is attached to a first end of the rod 424 b. On the other hand, a transmission member 424c is connected to the second end of the rod 424 b.
The transmission member 424c is a shaft-like body extending in one direction, and has a first end portion and a second end portion located on the opposite side of the first end portion in one direction. The transmission member 424c is inserted into a projection (not numbered) provided on the support bracket 424a so as to be movable in a direction orthogonal to the rotation center of the rod 424 b. A first end of the transmission member 424c is coupled to a second end of the rod 424 b. In contrast, the second end of the transmission member 424c is locked to the other end of the elastic body 423 in a state inserted into the elastic body 423, and one end of the elastic body 423 abuts against the protruding piece of the support bracket 424 a.
Thus, in a state where the rod 424b is rotated by the abutment of the abutting body 422 against the cam surface 421 of the rotating cam 420, the transmission member 424c is pulled by the rod 424b, and the elastic body 423 is compressed. That is, the transmission member 424c uses the restoring force of the compressed elastic body 423 as a force for rotating the rod 424b in a direction in which the abutting body 422 abuts against the rotating cam 420.
As described above, the door device 4 according to the present embodiment opens and closes the car doorway 300 by moving the pair of door panels 40a and 40b closer to and away from each other by forward and reverse rotation of the motor 410.
The description will be specifically made. First, an operation when the car doorway 300 is opened (when the door panels 40a and 40b located at the full close position P1 move to the full open position P2) will be described. In a state where the door panels 40a and 40b are at the fully closed position P1 (see fig. 3), the abutting body 422 of the door panel regulating device 42 is pressed against the first regulating surface 421b of the cam surface 421 of the rotating cam 420. In this state, when the output shaft of the motor 410 rotates in the normal direction, the rotational torque of the output shaft of the motor 410 is transmitted to the second rotating body 413b and the third rotating body 413c via the first rotating body 413a and the endless annular body 413 d.
In this way, the rotational torque is also transmitted to the rotating cam 420 via the pinion gear 412b coupled to the other side of the third rotating body 413 c. Then, since the rotational torque acting on the rotating cam 420 increases, a corner portion formed at the boundary between the arcuate surface 421a and the first limiting surface 421b in the cam surface 421 of the rotating cam 420 further pushes the contact body 422, and the contact body 422 positioned on the first limiting surface 421b moves onto the arcuate surface 421 a. In the present embodiment, since a part of the flat surface 421b located on the outer periphery of the rotating cam 420 becomes the first regulating surface 421b, the rotating torque acting on the rotating cam 420 becomes large as described above, the abutting body 422 is pressed by the first regulating surface 421b whose posture changes along with the start of rotation of the rotating cam 420 until it goes over the corner, and finally, the abutting body 422 shifts to the arcuate surface 421 a.
In this state, the abutment body 422 and the rotary cam 420 can smoothly move relative to each other. Accordingly, the first rotating body 413a coupled to the output shaft of the motor 410 rotates in the same direction, and the second rotating body 413b and the third rotating body 413c also rotate in the same direction as the first rotating body 413 a. Accordingly, as shown in fig. 9, the contact body 422 moves while rotating on the arc surface 421a along the arc surface 421a having a constant radius of curvature without hindrance.
In this way, the pinion gear 412a coupled to one side of the second rotating body 413b and the pinion gear 412b coupled to the other side of the third rotating body 413c also rotate in the same direction. In conjunction with this, the rack gear 411a on one side of the pinion gear 412a engaged with one side moves along the reference line BL1 of the plurality of teeth thereof, and the rack gear 411b on the other side of the pinion gear 412b engaged with the other side moves along the reference line BL2 of the plurality of teeth thereof.
As described above, although the second rotating body 413b and the third rotating body 413c rotate in the same direction, the plurality of teeth of the one rack gear 411a meshing with the one pinion gear 412a are positioned on the outer circumferential side (outward) of the arc-shaped rack gear 411a, and the plurality of teeth of the other rack gear 411b meshing with the other pinion gear 412b are positioned on the inner circumferential side (inward) of the arc-shaped rack gear 411b, and therefore, the pair of rack gears 411a and 411b move in opposite directions.
In this way, the pair of arms 414a and 414b to which the rack gears 411a and 411b are coupled rotate in opposite directions about a common fulcrum (fulcrum) in accordance with the movement of the corresponding rack gears 411a and 411 b. Thereby, the door panels 40a and 40b coupled to the arm bodies 414a and 414b move on the arc-shaped rails DRa and DRb. That is, the pair of door panels 40a and 40b move in opposite directions on the arcuate rails DRa and DRb.
Immediately before the pair of door panels 40a and 40b reach the fully open position P2, the abutting body 422 is positioned on the second limiting surface 421c as shown in fig. 10 in a state where the corner formed at the boundary between the arc surface 421a and the second limiting surface 421c in the cam surface 421 of the rotating cam 420 is located by the abutting body 422 and the pair of door panels 40a and 40b reach the fully open position P2. In this state, the pair of door panels 40a and 40b that originally closed the car doorway 300 open the car doorway 300 (not shown).
When the motor 410 is stopped, the rotation of the rotating cam 420 is restricted by the pressing of the abutting body 422 against the second restricting surface 421c of the rotating cam 420. In this state, since the rotational torque is not transmitted from the motor 410, even if the rotational cam 420 rotates in the reverse direction, the corner between the arcuate surface 421a and the second limiting surface 421c is blocked, and the rotation of the rotational cam 420 is limited. Thereby, the rotation (locking) of the pinion gear 412b coupled to the rotating cam 420 is restricted.
Therefore, the door panel 40b located at the fully open position P2 is prevented from moving to the fully closed position P1. In the present embodiment, the pinion gear 412b on the other side to which the rotating cam 420 is coupled is also coupled to the third rotating body 413 c. Therefore, the rotation of the second rotating body 413b and the first rotating body 413a (the output shaft of the motor 410) through the endless ring body 413d is also restricted. Therefore, even if the one door panel 40a attempts to move from the fully open position P2 to the fully closed position P1, the movement can be prevented.
In the present embodiment, as described above, the curvature centers CP5 and CP6 of the reference lines BL1 and BL2 of the pair of rack gears 411a and 411b coincide with or substantially coincide with the curvature centers CP1 and CP2 of the arcuate rails DRa and DRb, and the curvature radii Rc and Rd of the reference lines BL1 and BL2 of the pair of rack gears 411a and 411b coincide with (are identical to) each other.
Accordingly, the angular velocities of the pair of rack gears 411a, 411b when they move are the same. Therefore, the angular velocities of the pair of door panels 40a and 40b driven by the pair of rack gears 411a and 411b are also the same, and the time point at which the pair of door panels 40a and 40b start moving (the time point at which the pair of door panels start moving from the fully-closed position P1 to the fully-open position P2) and the stop time point (the time point at which the pair of door panels reach the fully-open position P2) are the same.
Next, an operation when the car doorway 300 is closed (when the door panels 40a and 40b located at the fully open position P2 move to the fully closed position P1) will be described. In the state where the door panels 40a, 40b are located at the fully open position P2, as described above, the abutting body 422 of the door panel regulating device 42 is pressed against the second regulating surface 421c of the cam surface 421 of the rotating cam 420. In this state, when the output shaft of the motor 410 is rotated in the reverse direction, the rotational torque of the output shaft of the motor 410 is transmitted to the second rotating body 413b and the third rotating body 413c via the first rotating body 413a and the endless annular body 413 d.
In this way, the rotational torque is also transmitted to the rotating cam 420 via the pinion gear 412b coupled to the other side of the third rotating body 413 c. Then, the rotational torque acting on the rotating cam 420 increases, and the corner portion formed at the boundary between the arcuate surface 421a and the second limiting surface 421c in the cam surface 421 of the rotating cam 420 further pushes the contact body 422, so that the contact body 422 positioned on the second limiting surface 421c moves onto the arcuate surface 421 a. In the present embodiment, since a part of the flat surface 421b positioned on the outer periphery of the rotating cam 420 becomes the second limiting surface 421c, the rotating torque acting on the rotating cam 420 increases as described above, the abutting body 422 is pressed by the second limiting surface 421c whose posture changes together with the start of rotation of the rotating cam 420 until it passes over the corner, and finally, the abutting body 422 shifts to the arc surface 421 a.
In this state, the abutment body 422 and the rotary cam 420 can smoothly move relative to each other. Accordingly, the first rotating body 413a coupled to the output shaft of the motor 410 rotates in the same direction, and the second rotating body 413b and the third rotating body 413c also rotate in the same direction as the first rotating body 413 a. Accordingly, as shown in fig. 9, the contact body 422 moves while rotating on the arc surface 421a along the arc surface 421a having a constant radius of curvature without hindrance.
In this way, the pinion 412a coupled to one side of the second rotating body 413b and the pinion 412b coupled to the other side of the third rotating body 413c also rotate in the same direction. In conjunction with this, the one rack gear 411a meshing with the one pinion gear 412a moves along the reference line BL1 of the plurality of teeth thereof, and the other rack gear 411b meshing with the other pinion gear 412b moves along the reference line BL2 of the plurality of teeth thereof.
As described above, although the second rotating body 413b and the third rotating body 413c rotate in the same direction, the plurality of teeth of the one rack gear 411a meshing with the one pinion gear 412a are positioned on the outer circumferential side (outward) of the arc-shaped rack gear 411a, and the plurality of teeth of the other rack gear 411b meshing with the other pinion gear 412b are positioned on the inner circumferential side (inward) of the arc-shaped rack gear 411b, so that the pair of rack gears 411a, 411b move in opposite directions.
In this way, the pair of arms 414a and 414b to which the rack gears 411a and 411b are coupled rotate in opposite directions about a common fulcrum (fulcrum) in response to the movement of the corresponding rack gears 411a and 411 b. Thereby, the door panels 40a and 40b coupled to the arm bodies 414a and 414b move on the arc-shaped rails DRa and DRb. That is, the pair of door panels 40a and 40b move in opposite directions on the arcuate rails DRa and DRb.
Immediately before each of the pair of door panels 40a and 40b reaches the fully closed position P1, the corner formed at the boundary between the arcuate surface 421a and the first limiting surface 421b in the cam surface 421 of the rotating cam 420 passes through the position where the abutting body 422 exists, and in a state where each of the pair of door panels 40a and 40b reaches the fully closed position P1, the abutting body 422 is positioned on the first limiting surface 421b as shown in fig. 8. In this state, the pair of door panels 40a, 40b, which originally opened the car doorway 300, closes the car doorway 300.
When the motor 410 is stopped, the rotation of the rotating cam 420 is restricted by the abutting body 422 pressing the first restricting surface 421b of the rotating cam 420. In this state, since the rotation torque is not transmitted from the motor 410, even if the rotation cam 420 attempts to rotate in the normal direction, the corner portion between the arcuate surface 421a and the first regulating surface 421b interferes, and the rotation of the rotation cam 420 is regulated. Thereby, the rotation of the pinion gear 412b coupled to the rotating cam 420 is restricted (locked).
Therefore, the door panel 40b located at the fully closed position P1 is prevented from moving toward the fully open position P2. In the present embodiment, the pinion gear 412b on the other side to which the rotating cam 420 is coupled is also coupled to the third rotating body 413 c. Therefore, the rotation of the second rotating body 413b and the first rotating body 413a (the output shaft of the motor 410) through the endless ring body 413d is also restricted. Therefore, even if the one door panel 40a attempts to move from the fully closed position P1 to the fully open position P2, the movement can be prevented.
In the present embodiment, as described above, the curvature centers CP5 and CP6 of the reference lines BL1 and BL2 of the pair of rack gears 411a and 411b coincide with or substantially coincide with the curvature centers CP1 and CP2 of the arcuate rails DRa and DRb, and the curvature radii Rc and Rd of the reference lines BL1 and BL2 of the pair of rack gears 411a and 411b coincide with (are identical to) each other.
Accordingly, the angular velocities of the pair of rack gears 411a, 411b when they move are the same. Therefore, the angular velocities of the pair of door panels 40a and 40b driven by the pair of rack gears 411a and 411b are also the same, and the time point at which the movement of the pair of door panels 40a and 40b starts (the time point at which the movement starts from the fully-open position P2 to the fully-closed position P1) and the time point at which the movement stops (the time point at which the fully-closed position P1 is reached) when the car doorway 300 is closed are the same.
As shown in fig. 1, a car doorway 60 is provided at a floor F, a car 2 at which a user stops entering and exiting the car doorway 60 is provided, and a pair of door panels 600a and 600b are further provided at the car doorway 60. The pair of door panels 600a, 600b positioned on the floor F engage with the pair of door panels 40a, 40b of the stopped car 2, and follow the pair of door panels 40a, 40b of the car 2 that is operating in the above-described manner.
Therefore, when the pair of door panels 600a and 600b on the floor F opens and closes the car doorway 60, the time points of starting and stopping the movement of the pair of door panels 600a and 600b on the floor F are also the same.
As described above, the car door device 4 of the present embodiment includes: a door panel 40b movably provided on the rail DRb and configured to be capable of reciprocating between a fully closed position P1 fully closing the car doorway 300 and a fully open position P2 fully opening the car doorway 300, the car doorway 300 being provided in the car body 3 accommodating users; an opening/closing device 41 for moving the door panel 40b between a fully closed position P1 and a fully open position P2; and a door plate regulating device 42 for regulating the movement of the door plate 40b in a state where the door plate 40b is at the fully open position P2 and the fully closed position P1, wherein the opening/closing device 41 includes: a single motor 410; a rack gear 411b extending in the same direction as the track DRb of the door panel 40b and directly or indirectly coupled to the door panel 40 b; and a pinion 412b that is meshed with the rack gear 411b and is driven by the motor 410 to rotate, the pinion 412b being provided so as to rotate by one or less rotation when the door panel 40b moves from the fully closed position P1 to the fully open position P2 and when the door panel 40b moves from the fully open position P2 to the fully closed position P1, the door panel regulating device 42 including: a rotary cam 420 concentrically coupled to the pinion 412b and having a cam surface 421 on an outer periphery thereof; an abutting body 422 provided to be capable of abutting against the cam surface 421 of the rotating cam 420; and an elastic body 423 for pressing the abutting body 422 against the cam surface 421, the cam surface 421 including: a circular arc surface 421a having a constant radius of curvature from the rotation center of the rotating cam 420; a first regulating surface 421b adjacent to one end side of the circular arc surface 421a in the circumferential direction and having a distance from the rotation center of the rotating cam 420 shorter than the radius of curvature of the circular arc surface 421 a; and a second restricting surface 421c adjacent to the other end side in the circumferential direction of the arc surface 421a and having a distance from the rotation center of the rotating cam 420 shorter than the radius of curvature of the arc surface 421a, wherein an angle formed by an imaginary line connecting the rotation center of the rotating cam 420 and one end of the arc surface 421a in the circumferential direction and an imaginary line connecting the rotation center of the rotating cam 420 and the other end of the arc surface 421a in the circumferential direction is set smaller than a rotation angle of the pinion 412b when the door panel 40b moves from the full close position P1 to the full open position P2 or from the full open position P2 to the full close position P1.
According to the above configuration, the abutting body 422 is pressed against the cam surface 421 of the rotating cam 420 by the biasing force of the elastic body 423. Further, since the distance from the rotation center to the first regulation surface 421b is shorter than the radius of curvature of the circular arc surface 421a, a corner portion is formed between the circular arc surface 421a and the first regulation surface 421 b. Since the distance from the rotation center to the second regulation surface 421c is shorter than the radius of curvature of the circular arc surface 421a, a corner portion is also formed between the circular arc surface 421a and the second regulation surface 421 c.
Accordingly, even if the rotating cam 420 is intended to rotate in one direction, the rotation of the rotating cam 420 can be restricted as long as the rotation torque that can cause the abutting body 422 to go over the corner between the arc surface 421a and the first restricting surface 421b is not generated in the state where the abutting body 422 is positioned on the first restricting surface 421 b.
Accordingly, in the state where the door panel 40b is located at the fully closed position P1, even if the door panel 40b attempts to move to the fully open position P2 and the rack gear 411b attempts to move, the rotation of the pinion 412b meshing with the rack gear 411b is restricted, similarly to the rotary cam 420 connected thereto. Therefore, the door panel 40b located at the full close position P1 can be prevented from moving toward the full open position P2 without preparation.
When a large rotational torque acts on the pinion 412b by driving the motor 410, the contact body 422 is pushed and retreated (passes over the corner) by the corner between the arc surface 421a and the first regulating surface 421b, and is transferred to the arc surface 421 a.
Since the radius of curvature of the arc surface 421a is constant, the contact body 422 smoothly moves on the arc surface 421a, and the rotating cam 420 and the pinion gear 412b smoothly rotate. Along with this, the door panel 40b also moves together with the movement of the rack gear 411 b.
Further, since the pinion 412b is set to rotate by one or less rotation when the door panel 40b moves from the fully closed position P1 to the fully open position P2 or when it moves from the fully open position P2 to the fully closed position P1, and the angle formed by the imaginary line connecting the rotation center of the rotating cam 420 and one end of the circular arc surface 421a in the circumferential direction and the imaginary line connecting the rotation center of the rotating cam 420 and the other end of the circular arc surface 421a in the circumferential direction is smaller than the rotation angle of the pinion 412b when the door panel 40b moves from the fully closed position P1 to the fully open position P2 or when it moves from the fully open position P2 to the fully closed position P1, the corner portion between the circular arc surface 421a and the second regulating surface 421c passes through the position where the contact body 422 exists before the door panel 40b reaches the fully open position P2 (preferably immediately before reaching), and the contact body 422 is transferred to the second regulating surface 421 c.
In this state, even if the rotating cam 420 attempts to rotate in the other direction, the rotation of the rotating cam 420 is restricted as long as the rotation torque that can cause the abutting body 422 to pass over the corner between the arc surface 421a and the second restricting surface 421c is not generated.
Accordingly, in the state where the door panel 40b is located at the fully open position P2, even if the door panel 40b attempts to move to the fully closed position P1 and the rack gear 411b attempts to move, the rotation of the pinion 412b meshing with the rack gear 411b is restricted, similarly to the coupled rotary cam 420. Therefore, the door panel 40b located at the fully open position P2 can be prevented from moving to the fully closed position P1 without preparation.
When a large rotational torque is applied to the pinion 412b by the driving of the motor 410 when the car doorway 300 is closed, the contact body 422 is pushed back (passes over the corner) by the corner between the arc surface 421a and the second restricting surface 421c, and is transferred to the arc surface 421 a.
Since the radius of curvature of the arc surface 421a is constant, the contact body 422 smoothly moves on the arc surface 421a, and the rotating cam 420 and the pinion gear 412b smoothly rotate. Along with this, the door panel 40b also moves together with the movement of the rack gear 411 b.
Further, since the pinion 412b is set to rotate by one or less rotation when the door panel 40b moves from the fully closed position P1 to the fully open position P2 or when the door panel 40b moves from the fully open position P2 to the fully closed position P1, and the angle formed by the imaginary line connecting the rotation center of the rotating cam 420 and one end of the circular arc surface 421a in the circumferential direction and the imaginary line connecting the rotation center of the rotating cam 420 and the other end of the circular arc surface 421a is smaller than the rotation angle of the pinion 412b when the door panel 40b moves from the fully closed position P1 to the fully open position P2 or when the fully open position P2 moves to the fully closed position P1, the corner portion between the circular arc surface 421a and the first regulating surface 421b passes through the position where the abutting body 422 exists before the door panel 40b reaches the fully closed position P1 (preferably immediately before the door panel 40b reaches the fully open position), and the abutting body 422 is transferred to the first regulating surface 421 b.
In this state, even if the rotating cam 420 attempts to rotate in one direction, as described above, the rotation of the rotating cam 420 is restricted as long as the rotational torque that can cause the abutting body 422 to pass over the corner between the arc surface 421a and the second restricting surface 421c is not generated, and therefore, the door panel 40b located at the full close position P1 is prevented from moving to the full open position P2 without preparation.
In the car door apparatus 4 of the present embodiment, since the contact body 422 is a cam follower that is rotatable about an axis extending in the same direction as the extending direction of the rotation center of the rotating cam 420, the contact body 422 smoothly rotates on the cam surface 421 when the rotating cam 420 rotates. Therefore, the contact body 422 can perform a smooth operation without applying an unnecessary resistance to the cam surface 421.
In the car door apparatus 4 of the present embodiment, since the door panel regulating device 42 includes the support mechanism 424 that supports the contact body 422 so as to be movable in the radial direction of the rotating cam 420, the movement of the contact body 422 in an unspecified direction is regulated, and the door panel regulating device can smoothly operate in accordance with the form of the cam surface 421 of the rotating cam 420 at the position where the contact body 422 is in contact.
In particular, in the present embodiment, the support mechanism 424 includes a rod 424b extending in one direction and having a first end and a second end located on the opposite side of the first end in the one direction, the rod 424b is freely rotatable about an axis extending in the same direction as the rotation center of the contact body 422 at an intermediate position between the first end and the second end, the contact body 422 is attached to the first end of the rod 424b, and the elastic body 423 presses the second end of the rod 424b, so that the contact body 422 can be stably moved while reliably supporting the contact body 422.
In the car door apparatus 4 of the present embodiment, the cam surface 421 of the rotating cam 420 includes the flat surface 421d connecting one end and the other end of the arcuate surface 421a in the circumferential direction, and the region adjacent to one end of the arcuate surface 421a in the flat surface 421d is made the first restricting surface 421b, and the region adjacent to the other end of the arcuate surface 421a in the flat surface 421d is made the second restricting surface 421c, so the above-described operation and effect can be exhibited without making the rotating cam 420 have a complicated structure.
The present invention is not limited to the above-described embodiments, and it is needless to say that appropriate modifications can be added within a range not departing from the gist of the present invention.
For example, in the above embodiment, the first rotating body 413a, the second rotating body 413b, and the third rotating body 413c are toothed pulleys, and the endless ring body 413d is a toothed belt, but the present invention is not limited thereto. For example, the first rotating body 413a, the second rotating body 413b, and the third rotating body 413c may be general pulleys, and the endless annular body 413d may be a belt (a flat belt, a V belt, or the like) corresponding to the pulleys. The first rotating body 413a, the second rotating body 413b, and the third rotating body 413c may be sprockets, and the endless annular body 413d may be a chain corresponding to the sprockets.
In the drive transmission mechanism 413 of the above embodiment, the rotation of the first rotating body 413a (the motor 410) is transmitted to the second rotating body 413b and the third rotating body 413c by the endless annular body 413d provided around the first rotating body 413a, the second rotating body 413b, and the third rotating body 413c, but the invention is not limited thereto. For example, in the drive transmission mechanism 413, the first rotating body 413a, the second rotating body 413b, and the third rotating body 413c may be gears, and the rotation of the first rotating body 413a may be transmitted to the second rotating body 413b via another gear, and the rotation of the first rotating body 413a may be transmitted to the third rotating body 413c via another gear. That is, the drive transmission mechanism 413 may further include a gear interposed between the first rotating body 413a (gear) and the second rotating body 413b (gear), and a gear interposed between the first rotating body 413a (gear) and the third rotating body 413c (gear).
In the above embodiment, the pair of door panels 40a and 40b are formed in the shape of an arc when viewed in the vertical direction, but the invention is not limited thereto. For example, the pair of door panels 40a and 40b may be formed in a straight line shape when viewed from the top-bottom direction (flat plate shape when viewed from the front). However, the trajectories DRa and DRb along which the pair of door panels 40a and 40b move are naturally arc-shaped.
In the above embodiment, the one end portions of the arm bodies 414a and 414b that link the rack gears 411a and 411b and the door panels 40a and 40b are aligned with the curvature centers CP1 and CP2 of the tracks DRa and DRb of the door panels 40a and 40b, and the arm bodies 414a and 414b are provided so as to be rotatable about the one end portions thereof as the rotation center, but the present invention is not limited thereto. For example, when the door panels 40a and 40b move along the guide rails 33 provided on the rails DRa and DRb, the rack gears 411a and 411b and the door panels 40a and 40b may be coupled simply by a coupling member. However, it is assumed that the center of curvature CP4 of the arc-shaped rack gears 411a, 411b coincides with the centers of curvature CP1, CP2 of the rails DRa, DRb of the door panels 40a, 40 b.
In the above embodiment, the rack gear 411a on the one side has a plurality of teeth on the outer periphery thereof which mesh with the corresponding pinion gear 412a, and the rack gear 411b on the other side has a plurality of teeth on the inner periphery thereof which mesh with the corresponding pinion gear 412b, but the present invention is not limited thereto. For example, the rack gear 411a on the one side may have a plurality of teeth on the inner periphery thereof that mesh with the corresponding pinion gear 412a, and the rack gear 411b on the other side may have a plurality of teeth on the outer periphery thereof that mesh with the corresponding pinion gear 412 b. The pair of rack gears 411a and 411b may have a plurality of teeth on the inner periphery, and the pair of rack gears 411a and 411b may have a plurality of teeth on the outer periphery.
Further, in the case where the plurality of teeth of the pair of rack gears 411a, 411b are directed in the same direction, the drive transmission mechanism 413 may transmit the drive of the motor 410 to the pair of pinion gears 412a, 412b so that the rotation direction of the pinion gear 412a on the one side is opposite to the rotation direction of the pinion gear 412b on the other side in order to relatively move the pair of rack gears 411a, 411b in opposite directions.
In the above embodiment, the car doorway 300 is opened and closed by the pair of door panels 40a and 40b, but the present invention is not limited thereto. For example, the car doorway 300 may be opened and closed by one door panel 40 b. In this case, rack gears and pinions may be provided in accordance with the number of door panels.
In the above embodiment, the door device 4 including the door panels 40a and 40b that move on the arcuate rails DRa and DRb has been described, but the invention is not limited thereto. For example, the gate device 4 may include gate plates 40a and 40b that move on linear rails. In this case, the rotary cam 420 may be coupled to a pinion gear that meshes with a rack gear that extends straight.
In the above embodiment, the rotating cam 420 is coupled to the pinion 412b, the pinion 412b is coupled to the rotating body (third rotating body) 413c, and the rotating body 413c transmits the rotating torque of the motor 410 through the endless annular body 413d, but the present invention is not limited thereto. For example, when the pinion 412b is attached to the output shaft of the motor 410, the rotating cam 420 may be coupled to the pinion 412 b.
In the above embodiment, the first limiting surface 421b and the second limiting surface 421c are set at different positions, but the present invention is not limited thereto. For example, the first limiting surface 421b and the second limiting surface 421c may be set at the same position or at positions partially overlapping. That is, the first restriction surface 421b may also serve as all or a part of the second restriction surface 421 c.
The first and second limiting surfaces 421b and 421c may be concave surfaces. The first and second limiting surfaces 421b and 421c may be different in shape. That is, one of the first limiting surface 421b and the second limiting surface 421c may be a flat surface, and the other of the first limiting surface 421b and the second limiting surface 421c may be a concave surface.
The first limiting surface 421b and the second limiting surface 421c are not limited to being continuous (located on a common surface). For example, the form between the first limiting surface 421b continuous with the arc surface 421a and the second limiting surface 421c continuous with the arc surface 421a may be variously changed. That is, when the first limiting surface 421b and the second limiting surface 421c are set at an interval, the abutting body does not contact between the first limiting surface 421b and the second limiting surface 421c, and thus, may be any of a flat surface, a concave surface, and a convex surface.
In the above embodiment, the abutting body 422 is constituted by a cam follower that can rotate about its center, but is not limited thereto. The contact body 422 may be a contact body that cannot rotate if the contact resistance against the cam surface 421 of the rotating cam 420 is small.
In the above embodiment, the elastic body 423 is not limited to the coil spring. For example, the elastic member may be rubber or the like.
In the above embodiment, the support mechanism 424 includes the rotatable lever 424b, and the contact body 422 can be moved in an arc shape in accordance with the rotation of the lever 424b, but the present invention is not limited thereto. The support mechanism 424 may also support the abutment body 422 to enable it to translate. In this case, the elastic body 423 may be compressed, and the abutting body 422 may be pressed against the cam surface 421 of the rotating cam 420 by the reaction force.
In the above embodiment, the opening/closing device 41 is supported by the ceiling portion 31 of the car body 3, but the invention is not limited thereto. For example, the opening/closing device 41 may be supported by the floor portion 32 of the car body 3.
Description of the reference numerals
1 elevator, 2 car, 3 car body, 4 door device (car door device), 30 peripheral wall portion, 31 ceiling portion, 32 floor portion, 33 rail, 40a, 40b door panel, 41 opening and closing device, 42 door panel limiting device, 60 car doorway, 300 car doorway, 410 motor, 411a, 411b rack gear, 412a, 412b pinion, 413 drive transmission mechanism, 413a first rotating body, 413b second rotating body, 413c third rotating body, 413d endless ring body, 414a, 414b arm body, 415 base, 416 bracket, 420 rotating cam, 421 cam surface, 421a arc surface, 421b first limiting surface, 421c second limiting surface, 421d plane, 422 abutting body, 423 elastic body, 424 supporting mechanism, 424a supporting bracket, 424b … pole, 424c … transmission part, 600a, 600b … door panel, BL1, BL2 … datum line, CP1, CP2, CP3, CP4, CP5, CP6 … centre of curvature, DRa, DRb … orbit, F … floor, P1 … full close position, P2 … full open position, R … lifting channel, Ra, Rb, Rc, Rd … radius of curvature.
Claims (4)
1. A door device for a car of an elevator,
comprising:
a door panel movably provided on a rail and configured to be capable of reciprocating between a fully closed position for fully closing a car doorway provided in a car body accommodating users and a fully open position for fully opening the car doorway;
an opening/closing device that moves the door panel between the fully closed position and the fully open position; and
a door plate restricting device that restricts movement of the door plate in a state where the door plate is at the fully open position and the fully closed position,
the opening and closing device includes:
a single motor;
a rack and pinion extending in the same direction as the track of the door panel and directly or indirectly coupled to the door panel; and
a pinion gear that meshes with the rack gear and is driven by the motor to rotate,
the pinion gear is configured to rotate less than one turn when the door panel moves from the fully closed position to the fully open position and when the door panel moves from the fully open position to the fully closed position,
the door plate restricting device has: a rotary cam concentrically coupled to the pinion gear and having a cam surface on an outer periphery thereof;
an abutting body provided to be capable of abutting against a cam surface of the rotating cam;
an elastic body for pushing the abutting body to the cam surface,
the cam surface includes: a circular arc surface having a constant curvature radius from the rotation center of the rotary cam;
a first regulating surface adjacent to one end side in the circumferential direction of the arc surface and having a distance from the rotation center of the rotating cam shorter than the radius of curvature of the arc surface; and
a second regulating surface adjacent to the other end side of the circular arc surface in the circumferential direction and having a distance from the rotation center of the rotating cam shorter than the radius of curvature of the circular arc surface,
an angle formed by an imaginary line connecting a rotation center of the rotary cam and one end of the arc surface in the circumferential direction and an imaginary line connecting the rotation center of the rotary cam and the other end of the arc surface in the circumferential direction is set to be smaller than a rotation angle of the pinion gear when the door panel moves from the fully closed position to the fully open position or moves from the fully open position to the fully closed position,
the cam surface of the rotary cam includes a plane connecting one end and the other end of the arc surface in the circumferential direction, and a region adjacent to the one end of the arc surface in the plane is defined as a first restriction surface and a region adjacent to the other end of the arc surface in the plane is defined as a second restriction surface.
2. The door device for an elevator car according to claim 1, wherein the abutting body is a cam follower that is rotatable about an axis extending in the same direction as the direction in which the rotation center of the rotating cam extends.
3. The door device for an elevator car according to claim 1 or 2, wherein the door plate regulating device includes a support mechanism that supports the abutting body so that the abutting body can move in a radial direction of the rotating cam.
4. The door device for an elevator car according to claim 3, wherein the support mechanism includes a rod extending in one direction and having a first end portion and a second end portion located on an opposite side of the first end portion, the rod is rotatable freely about an axis extending in the same direction as a rotation center of the abutting body at an intermediate position between the first end portion and the second end portion, the abutting body is attached to the first end portion of the rod, and the elastic body presses the second end portion of the rod.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710771532.9A CN109422183B (en) | 2017-08-31 | 2017-08-31 | Door device for elevator car |
| JP2017179333A JP6658703B2 (en) | 2017-08-31 | 2017-09-19 | Door device for elevator car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710771532.9A CN109422183B (en) | 2017-08-31 | 2017-08-31 | Door device for elevator car |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109422183A CN109422183A (en) | 2019-03-05 |
| CN109422183B true CN109422183B (en) | 2022-02-11 |
Family
ID=65505214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710771532.9A Active CN109422183B (en) | 2017-08-31 | 2017-08-31 | Door device for elevator car |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6658703B2 (en) |
| CN (1) | CN109422183B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117446623B (en) * | 2023-12-26 | 2024-03-19 | 沈阳华彩机械制造有限公司 | Linkage assembly of arc elevator car door machine |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5319659A (en) * | 1976-08-05 | 1978-02-23 | Nippon Air Brake Co | Automatic opening adn closing decivce for airrtight door |
| JPS61290185A (en) * | 1985-04-03 | 1986-12-20 | ポマガルスキ ソシエテ アノニム | Door driving device |
| CH663406A5 (en) * | 1984-05-28 | 1987-12-15 | Inventio Ag | DOOR DRIVE DEVICE WITH LOCKING MECHANISM FOR ELEVATORS. |
| CN1030733A (en) * | 1987-07-18 | 1989-02-01 | 三菱电机株式会社 | The door lock assembly of elevator |
| JP2001184555A (en) * | 1999-12-24 | 2001-07-06 | Sanyo Electric Co Ltd | Article carrying-out device for automatic vending machine |
| CN1439941A (en) * | 2002-02-18 | 2003-09-03 | 株式会社三协精机制作所 | Driving power transferring mechanism and its damper device |
| CN101172552A (en) * | 2006-10-11 | 2008-05-07 | 东芝电梯株式会社 | Limit switch action mechanism and speed controller |
| JP2011236035A (en) * | 2010-05-12 | 2011-11-24 | Duplo Corp | Device for preventing overrun of movable member |
| CN106414302A (en) * | 2014-03-19 | 2017-02-15 | 威特控股有限公司 | Block system and assembly for lift doors |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4931319Y1 (en) * | 1970-07-31 | 1974-08-24 | ||
| US4776433A (en) * | 1988-01-25 | 1988-10-11 | Westinghouse Electric Corp. | Elevator door control system |
| IT1317492B1 (en) * | 2000-05-08 | 2003-07-09 | Sematic Italia Spa | HANDLING GROUP FOR NON-RECTILINEAR PROFILE DOORS. |
| JP5395324B2 (en) * | 2006-10-25 | 2014-01-22 | 株式会社日立製作所 | Door opener |
| CN201873424U (en) * | 2010-04-16 | 2011-06-22 | 刘文瑞 | Transmission mechanism for arc elevator door automatically opening and closing machine |
| CN104773637B (en) * | 2014-01-15 | 2016-06-15 | 上海三菱电梯有限公司 | With the asynchronous door cutter of car door lock, elevator door-motor and gate system |
| CN205932879U (en) * | 2016-08-12 | 2017-02-08 | 重庆迈高电梯有限公司 | Wholecircle shape bbservation elevator door system |
| CN206304357U (en) * | 2016-11-25 | 2017-07-07 | 康为同创集团有限公司 | A kind of Soccer robot push the ball dribbling mechanism |
-
2017
- 2017-08-31 CN CN201710771532.9A patent/CN109422183B/en active Active
- 2017-09-19 JP JP2017179333A patent/JP6658703B2/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5319659A (en) * | 1976-08-05 | 1978-02-23 | Nippon Air Brake Co | Automatic opening adn closing decivce for airrtight door |
| CH663406A5 (en) * | 1984-05-28 | 1987-12-15 | Inventio Ag | DOOR DRIVE DEVICE WITH LOCKING MECHANISM FOR ELEVATORS. |
| JPS61290185A (en) * | 1985-04-03 | 1986-12-20 | ポマガルスキ ソシエテ アノニム | Door driving device |
| CN1030733A (en) * | 1987-07-18 | 1989-02-01 | 三菱电机株式会社 | The door lock assembly of elevator |
| JP2001184555A (en) * | 1999-12-24 | 2001-07-06 | Sanyo Electric Co Ltd | Article carrying-out device for automatic vending machine |
| CN1439941A (en) * | 2002-02-18 | 2003-09-03 | 株式会社三协精机制作所 | Driving power transferring mechanism and its damper device |
| CN101172552A (en) * | 2006-10-11 | 2008-05-07 | 东芝电梯株式会社 | Limit switch action mechanism and speed controller |
| JP2011236035A (en) * | 2010-05-12 | 2011-11-24 | Duplo Corp | Device for preventing overrun of movable member |
| CN106414302A (en) * | 2014-03-19 | 2017-02-15 | 威特控股有限公司 | Block system and assembly for lift doors |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109422183A (en) | 2019-03-05 |
| JP2019043774A (en) | 2019-03-22 |
| JP6658703B2 (en) | 2020-03-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6257303B1 (en) | Rack and pinion door drive system | |
| CA3014960C (en) | Control system for window shutter | |
| CN102007260B (en) | Louver rotating mechanism | |
| CN109422183B (en) | Door device for elevator car | |
| US7596907B2 (en) | Force transmission element, window lifter and motor vehicle door with a window lifter | |
| US5009296A (en) | Power transmitting apparatus for use in vehicle | |
| CA2218799A1 (en) | Sliding door or swinging/sliding door for vehicles | |
| JP2023531040A (en) | door operating system | |
| CN109422182B (en) | Door device for elevator car | |
| EP2977180A1 (en) | Link mechanism for opening and closing die and positioning bottom die by single shaft | |
| US8336840B2 (en) | Braking device for braking a support member and supporting device for supporting the support member with the same | |
| WO1998021438A1 (en) | A rack and pinion door drive system | |
| JP2019138117A (en) | Window regulator | |
| JPH049902Y2 (en) | ||
| AU761744B2 (en) | A rack and pinion door drive system | |
| US20060121842A1 (en) | Multi-sash fume hood drive system | |
| KR20200098333A (en) | Swing door opening and closing device for car using worm gear camplate | |
| CN217812983U (en) | Swing arm sliding door mechanism and moving machine applying same | |
| JP3795492B2 (en) | sliding door | |
| CN109363717B (en) | Ultrasonic equipment and floating device | |
| KR100500293B1 (en) | Lifter for Monitor Tilting Apparatus Audio/Video System of Motor Vehicle | |
| AU2002318883B2 (en) | A Rack and Pinion Door Drive System | |
| JP2022116687A (en) | Operation device | |
| CN115704605A (en) | Connecting rod component and motion assembly for air deflector | |
| JPH0432473Y2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |