阅读说明：本技术 电梯的轿厢门装置 (Elevator car door device ) 是由 北泽昌也 菅原正行 伊藤直俊 于 2018-09-06 设计创作，主要内容包括：在电梯的轿厢门装置中,锁定部件以能够在上锁位置与解锁位置之间与门刀机构联动地旋转的方式设置于轿厢门。门刀机构具有：联动部件,其与杆联动地旋转；以及第一和第二门刀,它们与联动部件连接,并与门连结部件接触。在轿厢停靠于层站楼层时,欲通过门马达使轿厢门向打开方向移动的情况下,锁定部件位于解锁位置,在轿厢位于楼层之间时,欲通过门马达使轿厢门向打开方向移动的情况下,锁定部件位于上锁位置。(In a car door device of an elevator, a lock member is provided to a car door so as to be rotatable in conjunction with a door vane mechanism between a locked position and an unlocked position. The door knife mechanism comprises: an interlocking member that rotates in interlocking relation with the lever; and first and second vanes connected to the link member and contacting the door coupling member. When the car stops at a landing floor, the locking member is positioned at the unlocking position when the car door is to be moved in the opening direction by the door motor, and when the car is positioned between floors, the locking member is positioned at the locking position when the car door is to be moved in the opening direction by the door motor.)

1. A car door device of an elevator is provided with:

a car door;

a door motor that generates a driving force for opening and closing the car door;

a vane mechanism provided in the car door and configured to be brought into contact with a door coupling member provided in a landing door to cause the landing door to be interlocked with the car door;

a lever provided to the car door so as to be rotatable about a lever axis, the lever being configured to transmit a driving force of the door motor to bring the vane mechanism into contact with the door coupling member when the car door is opened and closed, and to release the vane mechanism from contact with the door coupling member when the car door is fully closed; and

a lock member provided to the car door so as to be rotatable in conjunction with the vane mechanism between a locked position at which the lock member is engaged with a latch to restrict an opening operation of the car door and an unlocked position at which the lock member allows the opening operation of the car door,

the door vane mechanism has:

an interlocking member that is provided to the car door so as to be rotatable about the lever axis and rotates in conjunction with the lever; and

a first vane and a second vane connected to the link member and contacting the door coupling member,

the lock member is positioned at the unlock position when the car is stopped at a landing floor and the car door is moved in an opening direction by the door motor,

when the car door is to be moved in an opening direction by the door motor when the car is positioned between floors, the lock member is positioned at the locked position.

2. The car door device of an elevator according to claim 1,

the positions of the first vane and the second vane when the car door is in the fully closed state are set to normal positions,

when the first vane and the second vane are brought into contact with the door coupling member and the landing door is interlocked with the car door, the positions of the first vane and the second vane are interlocked positions,

the lock member rotates from the locked position to the unlocked position in conjunction with movement of the first vane and the second vane from the normal position to the interlocked position,

the lock member is configured to rotate from the unlocked position to the locked position in conjunction with movement of the first vane and the second vane from the linked position to a position opposite to the normal position.

3. The car door device of an elevator according to claim 2,

the vane mechanism causes the landing door to be linked with the car door by clamping the door coupling member with the first vane and the second vane,

the lock member rotates from the unlocked position to the locked position in conjunction with an operation in which an interval between the first vane and the second vane is smaller than an interval when the door coupling member is held by the first vane and the second vane.

4. The car door device of an elevator according to claim 2 or 3,

the locking member is rotated from the locked position to the unlocked position in conjunction with an operation of moving either one of the first vane and the second vane from the normal position to a position opposite to the interlocked position in a state of contacting the door coupling member.

5. The car door device of an elevator according to any one of claims 1 to 4,

the door vane mechanism has a cam portion that rotates the lock member in conjunction with the door vane mechanism.

6. The car door device of an elevator according to claim 5,

the cam portion is provided to the interlocking member.

7. The car door device of an elevator according to any one of claims 1 to 6,

the link member is coupled to the rod so as to be relatively rotatable within a set range,

a slide hole is provided in either one of the lever and the interlocking member,

an action shaft is provided on the other of the lever and the link member,

the action shaft is movable within the slide hole between a first position and a second position,

when the car door is in a fully closed state, the acting shaft is located at the first position,

a force is applied between the linkage member and the lever to hold the acting shaft in the first position.

8. The car door device of an elevator according to claim 7,

when the car is stopped at a landing floor and the car door is to be moved in an opening direction by the door motor, the operating shaft is moved to the second position.

9. The car door device of an elevator according to claim 7 or 8,

when the car door or the landing door is to be manually moved in an opening direction when the car stops at a landing floor, the operating shaft is moved to the second position.

Technical Field

The present invention relates to a car door device for an elevator including a vane mechanism for interlocking a landing door and a car door.

Background

In a conventional car door device for an elevator, a fixed latch is fixed to a car, and a movable latch that can rotate is provided to a car door. When the car is located at a position other than the landing position, if the car door is manually moved in the opening direction, the movable latch engages with the fixed latch, and the movement of the car door is restricted (see, for example, patent document 1).

Documents of the prior art

Patent document

Patent document 1: chinese utility model bulletin No. 202944966 specification

Disclosure of Invention

Problems to be solved by the invention

In the above-described conventional car door apparatus, when the car is located between floors, the movement of the car door by hand is restricted, but the car door may move in the opening direction due to an erroneous operation of the door motor.

The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a car door device for an elevator, which can more reliably suppress movement of a car door in an opening direction when a car is positioned between floors.

Means for solving the problems

A car door device for an elevator according to the present invention includes: a car door; a door motor that generates a driving force for opening and closing the car door; a vane mechanism provided in the car door and configured to be brought into contact with a door coupling member provided in the landing door to cause the landing door to be interlocked with the car door; a lever provided to the car door so as to be rotatable about a lever axis, the lever being configured to transmit a driving force of the door motor to bring the vane mechanism into contact with the door coupling member when the car door is opened and closed, and to release the vane mechanism from contact with the door coupling member when the car door is fully closed; and a lock member provided to the car door so as to be rotatable in conjunction with the vane mechanism between a locked position at which the lock member is engaged with the latch to restrict an opening operation of the car door and an unlocked position at which the lock member allows the opening operation of the car door, the vane mechanism including: an interlocking member that is provided to the car door so as to be rotatable about a lever axis and rotates in conjunction with the lever; and first and second vanes connected to the linking member and contacting the door connecting member, wherein the locking member is located at an unlocked position when the car is to be moved in the opening direction by the door motor when the car is stopped at a landing floor, and the locking member is located at a locked position when the car is to be moved in the opening direction by the door motor when the car is located between floors.

Effects of the invention

According to the car door apparatus for an elevator of the present invention, when the car is located between floors, the movement of the car door in the opening direction can be more reliably suppressed.

Drawings

Fig. 1 is a front view showing a car door device of an elevator according to embodiment 1 of the present invention.

Fig. 2 is a front view showing a landing door apparatus according to embodiment 1.

Fig. 3 is a front view showing a main part of the car door apparatus when the first and second car doors of fig. 1 are in a fully closed state.

Fig. 4 is a front view showing a part of the components of fig. 3 omitted.

Fig. 5 is an enlarged front view of the link member of fig. 3.

Fig. 6 is a front view showing a state at the start of a door opening operation of the car door device of fig. 3.

Fig. 7 is a front view showing a part of the components of fig. 6 omitted.

Fig. 8 is a front view showing a main part of a car door device in a case where the first and second landing doors are to be manually moved in an opening direction when the car stops at a landing floor.

Fig. 9 is a front view showing a part of the components of fig. 8 omitted.

Fig. 10 is a front view showing a main part of a car door apparatus in a case where first and second car doors are to be manually moved in an opening direction when a car stops at a landing floor.

Fig. 11 is a front view showing a part of the components of fig. 10 omitted.

Fig. 12 is a front view showing a main part of a car door apparatus in a case where the first and second car doors are to be manually moved in an opening direction when the car is stopped between floors.

Fig. 13 is a front view showing a part of the components of fig. 12 omitted.

Fig. 14 is a front view showing a main part of a car door apparatus in a case where the first and second car doors are to be moved in an opening direction by the door motor when the car is stopped between floors.

Fig. 15 is a front view showing a part of the components of fig. 14 omitted.

Detailed Description

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

Embodiment 1.

Fig. 1 is a front view showing a car door device of an elevator according to embodiment 1 of the present invention, and is a view of the car door device as viewed from a landing side.

In the figure, a car doorway 1 is opened and closed by a first car door 2 and a second car door 3. The first car door 2 has a first car door panel 4 and a first car door hanger 5. The first car door hanger 5 is fixed to an upper portion of the first car door panel 4.

A pair of first car door rollers 6 and a pair of first car door push-up rollers 7 are provided in the first car door hanger 5. The pair of first car door push-up rollers 7 is disposed below the pair of first car door rollers 6.

The second car door 3 has a second car door panel 8 and a second car door hanger 9. The second car door hanger 9 is fixed to an upper portion of the second car door panel 8.

A pair of second car door rollers 10 and a pair of second car door push-up rollers 11 are provided in the second car door hanger 9. The pair of second car door push-up rollers 11 is disposed below the pair of second car door rollers 10.

The car door beam 13 is fixed to the car room above the car doorway 1. A car door rail 14 is provided on the car door beam 13. The first and second car doors 2, 3 are suspended from the car door track 14.

When the first and second car doors 2 and 3 are opened and closed, the first and second car door rollers 6 and 10 roll on the car door rail 14. The first and second car door push-up rollers 7, 11 prevent the first and second car door rollers 6, 10 from falling off the car door rail 14.

A door motor 15 is fixed to the car door beam 13. The door motor 15 generates a driving force for opening and closing the first and second car doors 2 and 3. The door motor 15 is disposed at one end of the car door beam 13 in the width direction of the car doorway 1. The door motor 15 is disposed above the car door rail 14. The rotation axis of the door motor 15 is parallel to the depth direction of the car and is horizontal.

A motor pulley 16 is fixed to a rotating shaft of the door motor 15. A coupling pulley 17 is provided at the other end portion of the car door beam 13 in the width direction of the car doorway 1. The link pulley 17 is disposed above the car door rail 14. The rotation axis of the link pulley 17 is parallel to the rotation axis of the door motor 15.

An annular transmission body 18 is wound between the motor pulley 16 and the interlocking pulley 17. As the transmission body 18, for example, a transmission belt is used. The upper and lower portions of the transmission body 18 are tensioned in parallel with the width direction of the car doorway 1.

The first car door 2 is provided with a vane mechanism 19. The transmission body 18 is provided with a gripping member 20. The gripping member 20 grips a lower portion of the transmission body 18. The movement of the transmission body 18 is transmitted to the first car door 2 via the gripping member 20. The transmission body 18 is cyclically operated by the door motor 15, and transmits the driving force of the door motor 15 to the first car door 2. The details of the transmission of force from the transmission body 18 to the vane mechanism 19 and the first car door 2 will be described later.

The opening and closing operation of the first car door 2 is transmitted to the second car door 3 via the car door interlocking mechanism 21. The door motor 15 is controlled by a door control device 22. The door control device 22 has a microcomputer.

The car door device of embodiment 1 is a single-opening type. That is, the first and second car doors 2 and 3 move in the same direction during opening and closing operations.

The first car door 2, which is a high-speed door, is disposed on the side away from the door pocket when the car doorway 1 is fully closed. The second car door 3, which is a low speed door, is disposed on the side close to the door pocket when the car doorway 1 is fully closed. The door pocket is to the left of the second car door 3 of fig. 1. During the opening and closing operation, the first car door 2 moves at a higher speed than the second car door 3.

Fig. 2 is a front view showing a landing door apparatus according to embodiment 1, and is a view of the landing door apparatus as viewed from the hoistway side.

The landing doorway 31 is opened and closed by a first landing door 32 and a second landing door 33. The first landing door 32 has a first landing door panel 34 and a first landing door hanger 35. A first landing door hanger 35 is fixed to an upper portion of the first landing door panel 34.

A pair of first landing door rollers 36 and a pair of first landing door push-up rollers 37 are provided at the first landing door hanger 35. The pair of first-stage door push-up rollers 37 are disposed below the pair of first-stage door rollers 36.

The second landing door 33 has a second landing door panel 38 and a second landing door hanger 39. The second landing door hanger 39 is fixed to an upper portion of the second landing door panel 38.

A pair of second landing door rollers 40 and a pair of second landing door push-up rollers 41 are provided on the second landing door hanger 39. The pair of second landing door push-up rollers 41 is disposed below the pair of second landing door rollers 40.

The landing door beam 43 is disposed above the landing doorway 31. A landing door rail 44 is provided on the landing door beam 43. The first and second landing doors 32, 33 are suspended from the landing door track 44.

When the first and second landing doors 32 and 33 are opened and closed, the first and second landing door rollers 36 and 40 move on the landing door rails 44 in a rolling manner. The first and second landing door push-up rollers 37, 41 prevent the first and second landing door rollers 36, 40 from falling off the landing door track 44.

The second landing door 33 is provided with a pair of coupling rollers 45 as door coupling members, i.e., a fixed-side interlocking roller and a movable-side interlocking roller.

When the car stops at the landing floor and the first car door 2 is opened, the coupling roller 45 is sandwiched between the vane mechanisms 19. Thereby, the movable-side interlocking roller revolves around the fixed-side interlocking roller, and the lock device, not shown, is unlocked. The vane mechanism 19 is in contact with the coupling roller 45 and sandwiches the coupling roller 45, thereby causing the second landing door 33 to be interlocked with the opening and closing operation of the first car door 2.

A landing door link 46 is provided to the landing door beam 43. The opening and closing operation of the second landing door 33 is transmitted to the first landing door 32 via the landing door link mechanism 46.

Fig. 3 is a front view showing a main part of the car door apparatus when the first and second car doors 2, 3 of fig. 1 are in a fully closed state. Fig. 4 is a front view showing parts of fig. 3 omitted.

The first car door 2 is provided with a lever shaft 51 and a lever 52. The shaft 51 is fixed to the first car door 2 horizontally in parallel with the depth direction of the car.

The lever 52 is rotatable about the lever shaft 51. A holding member 20 is connected to an upper end portion of the rod 52. The grip member 20 is rotatable about an axis parallel to the lever axis 51 with respect to the lever 52.

When the first car door 2 is opened and closed, the lever 52 brings the vane mechanism 19 into contact with the coupling roller 45, and the coupling roller 45 is sandwiched between the vane mechanism 19 and the coupling roller 45. When the first car door 2 is fully closed, the lever 52 releases the contact between the vane mechanism 19 and the coupling roller 45, and releases the pinching of the coupling roller 45 by the vane mechanism 19.

The vane mechanism 19 includes an interlocking member 54, a connecting member shaft 55, a vane connecting member 56, a first vane 57, and a second vane 58. The first and second vanes 57, 58 are disposed parallel to each other and vertically. When the first and second car doors 2 are opened and closed, the first and second vanes 57 and 58 contact the coupling roller 45 and sandwich the coupling roller 45.

The first vane 57 is disposed on the opposite side of the door pocket from the second vane 58. The second vane 58 is disposed on the door pocket side with respect to the first vane 57.

The interlocking member 54 is provided to the first car door 2 so as to be rotatable about the lever shaft 51. The link member 54 is rotatably coupled to the first and second vanes 57, 58.

The interlocking member 54 is provided with a slide hole 54 a. The lever 52 is provided with an acting shaft 52 a. The axial direction of the acting shaft 52a is parallel to the lever shaft 51, and the acting shaft 52a is inserted into the slide hole 54 a. Thereby, the interlocking member 54 rotates in interlocking with the lever 52.

The diameter of the slide hole 54a is larger than the diameter of the operating shaft 52 a. That is, a certain margin is provided between the slide hole 54a and the acting shaft 52 a. Thereby, the acting shaft 52a can slide within the slide hole 54a between the first position shown in fig. 3 and the second position shown in fig. 6. That is, the link member 54 is coupled to the lever 52 so as to be relatively rotatable within a set range.

When the first car door 2 is in the fully closed state, the operating shaft 52a is located at the first position. Then, when the first car door 2 is opened and closed, the operating shaft 52a moves to the second position.

The coupling member shaft 55 is fixed to the first car door 2 directly below the lever shaft 51. The connecting member shaft 55 is parallel to the lever shaft 51. The vane coupling member 56 is provided to the first car door 2 so as to be rotatable about the coupling member shaft 55. The vane coupling member 56 is rotatably coupled to the first and second vanes 57, 58.

The interlocking member 54 and the vane connecting member 56 function as a parallel link connecting the first vane 57 and the second vane 58. Further, the link member 54 links the first and second vanes 57, 58 with the rod 52. The first and second vanes 57, 58 are supported by the first car door 2 via the lever shaft 51, the interlocking member 54, the coupling member shaft 55, and the vane coupling member 56.

The car door beam 13 is provided with a latch 61. The latch 61 is provided to the car outside the first car door 2. In this example, the latch 61 is fixed to the car door beam 13 on the opposite side of the door pocket from the first vane 57.

The first car door 2 is provided with a locking member shaft 62 and a locking member 63. The lock member shaft 62 is fixed to the first car door 2 obliquely below the shaft 51. The lock member shaft 62 is disposed on the opposite side of the door pocket from the lever shaft 51. Further, the lock member shaft 62 is parallel to the lever shaft 51.

The lock member 63 is provided to the first car door 2 so as to be rotatable about the lock member shaft 62. The lock member 63 is rotatable between a locked position shown in fig. 3 and an unlocked position shown in fig. 6 in conjunction with the door vane mechanism 19.

The locked position is a position at which the lock member 63 is caught by the latch 61 to restrict the opening operation of the first car door 2. Also, the unlocked position is a position where the locking member 63 is away from the latch 61, thereby allowing the opening action of the first car door 2.

A cam portion 54b for rotating the lock member 63 in conjunction with the operation of the door vane mechanism 19 is provided at a lower portion of the interlocking member 54.

The lock member 63 is provided with a pin 63 a. The pin 63a is a contact portion that contacts the cam portion 54 b.

Fig. 5 is an enlarged front view of the link member 54 of fig. 3. The cam portion 54b has a first convex portion 54c, a first concave portion 54d, a second convex portion 54e, and a second concave portion 54 f. The first concave portion 54d is provided between the first convex portion 54c and the second convex portion 54 e. The second convex portion 54e is disposed between the first concave portion 54d and the second concave portion 54 f. The first and second convex portions 54c and 54e protrude downward.

When the first car door 2 is fully closed, the pin 63a contacts the bottom surface of the first recess 54 d.

A holding spring 64 as a holding member is provided between the interlocking member 54 and the acting shaft 52 a. The holding spring 64 generates a force that holds the acting shaft 52a in the first position. That is, a force that holds the acting shaft 52a in the first position is applied between the linking member 54 and the lever 52.

Next, the operation will be described. When the car stops at the landing floor and the gripping member 20 is moved in the left direction of fig. 3 by the door motor 15 from the state of fig. 3, the lever 52 rotates in the counterclockwise direction of fig. 3 about the lever shaft 51.

Thereby, the link member 54 also rotates counterclockwise in fig. 3 about the lever shaft 51. By the rotation of the interlocking member 54, the first vane 57 moves upward and the second vane 58 moves downward, and the gap between the first vane 57 and the second vane 58 is narrowed.

Fig. 6 is a front view showing a state at the start of a door opening operation of the car door device of fig. 3. Fig. 7 is a front view showing parts of fig. 6 omitted.

In the state of fig. 6 and 7, the joining roller 45 is sandwiched between the first vane 57 and the second vane 58. Also, the acting shaft 52a moves to the second position within the slide hole 54a against the retaining spring 64. Then, the pin 63a is pressed by the cam portion 54b, and the lock member 63 rotates about the lock member shaft 62 and moves to the unlock position.

At this time, the pin 63a contacts the second projection 54e of the cam portion 54 b. That is, the second convex portion 54e is a portion that moves the lock member 63 to the unlock position with respect to the door opening operation by the door motor 15 when the car stops at the landing floor.

Here, the positions of the first and second vanes 57, 58 when the first and second car doors 2, 3 are in the fully closed state are assumed to be normal positions. Then, the positions of the first and second vanes 57, 58 when the first and second landing doors 32, 33 are interlocked with the first and second car doors 2, 3 by the first and second vanes coming into contact with the coupling roller 45 are set as interlocked positions. The lock member 63 rotates from the locked position to the unlocked position in conjunction with the movement of the first and second vanes 57, 58 from the normal position to the interlocked position.

The lock member 63 rotates from the locked position to the unlocked position in conjunction with the operation of reducing the distance between the first vane 57 and the second vane 58 from a state larger than the distance when the coupling roller 45 is pinched.

When the gripping member 20 moves further in the left direction of fig. 6 from the state of fig. 6, the first car door 2 starts the opening operation while gripping the coupling roller 45 by the vane mechanism 19. At this time, the locking member 63 is located at the unlocked position, thus allowing the opening action of the first car door 2.

Next, fig. 8 is a front view showing a main part of a car door apparatus in a case where the first and second landing doors 32 and 33 are to be manually moved in an opening direction when the car stops at a landing floor. Fig. 9 is a front view showing parts of fig. 8 omitted.

When the maintenance person unlocks the lock device of the landing door device from the state of fig. 3 and manually moves the second landing door 33 in the opening direction, the second vane 58 is pressed in the left direction of fig. 3 by the coupling roller 45. Thereby, the interval between the first vane 57 and the second vane 58 is expanded, and the interlocking member 54 rotates clockwise in fig. 3. Also, the acting shaft 52a moves to the second position within the slide hole 54a against the retaining spring 64.

Then, the pin 63a is pressed by the cam portion 54b, and the lock member 63 rotates about the lock member shaft 62 and moves to the unlock position.

At this time, the pin 63a contacts the first convex portion 54c of the cam portion 54 b. That is, the first convex portion 54c is a portion that moves the lock member 63 to the unlock position with respect to the door opening operation by hand when the car stops at the landing floor.

From this state, the second landing door 33 is further moved in the opening direction, and the first and second car doors 2 and 3 and the first and second landing doors 32 and 33 can be manually opened.

Next, fig. 10 is a front view showing a main part of the car door apparatus in a case where the first and second car doors 2 and 3 are to be manually moved in an opening direction when the car stops at a landing floor. Fig. 11 is a front view showing parts of fig. 10 omitted.

When the first car door 2 is manually moved in the opening direction from the state of fig. 3, the coupling roller 45 contacts the first vane 57, the distance between the first vane 57 and the second vane 58 increases, and the interlocking member 54 rotates clockwise in fig. 3. Also, the acting shaft 52a moves to the second position within the slide hole 54a against the retaining spring 64.

Then, the pin 63a is pressed by the cam portion 54b, and the lock member 63 rotates about the lock member shaft 62 and moves to the unlock position. Further, the lock device of the landing door device is also unlocked. At this time, the pin 63a contacts the first convex portion 54c of the cam portion 54 b.

From this state, the first car door 2 is further moved in the opening direction, whereby the first and second car doors 2 and 3 and the first and second landing doors 32 and 33 can be manually opened.

Next, fig. 12 is a front view showing a main part of the car door apparatus in a case where the first or second car doors 2 and 3 are to be manually moved in the opening direction when the car is stopped between floors. Fig. 13 is a front view showing parts of fig. 12 omitted.

As shown in fig. 12 and 13, in a state where the car is deviated from the landing position, the coupling roller 45 is not present between the first and second vanes 57, 58. Therefore, the lock member 63 is kept at the locked position, and the lock member 63 is hooked on the latch 61, whereby the first vane 57 is prevented from moving in the opening direction.

At this time, the pin 63a is kept in contact with the first recess 54 d. That is, the first recess 54d is a portion for holding the lock member 63 at the locked position in response to the manual door opening operation when the car stops between floors.

Next, fig. 14 is a front view showing a main part of the car door apparatus in a case where the first and second car doors 2 and 3 are to be moved in the opening direction by the door motor 15 when the car is stopped between floors. Fig. 15 is a front view showing parts of fig. 14 omitted.

In this case, in a state where the coupling roller 45 is not present between the first and second vanes 57 and 58, the gripping member 20 is moved in the left direction of fig. 14 by driving of the door motor 15. Then, the link member 54 rotates counterclockwise in fig. 14, and the interval between the first vane 57 and the second vane 58 is narrowed.

However, since the coupling roller 45 is not present, the interval between the first vane 57 and the second vane 58 is narrower than the interval when the coupling roller 45 is nipped. Further, the acting shaft 52a is located at the first position within the slide hole 54 a.

When the interlocking member 54 rotates, the pin 63a contacts the second projection 54e, and the lock member 63 rotates to the unlock position. However, as the interlocking member 54 further rotates, the pin 63a passes through the second convex portion 54e and contacts the second concave portion 54 f. Thereby, the locking member 63 is rotated again to the unlocked position. That is, the second recess 54f is a portion for holding the lock member 63 at the locked position with respect to the door opening operation by the door motor 15 when the car stops between floors.

In this way, the lock member 63 rotates from the unlock position to the lock position in conjunction with the movement of the first and second vanes 57 and 58 from the linked position to the opposite side of the normal position. Then, the lock member 63 rotates from the unlock position to the lock position in conjunction with the operation in which the distance between the first vane 57 and the second vane 58 is smaller than the distance when the coupling roller 45 is pinched.

In such an elevator car door device, the lock member 63 rotates between the locked position and the unlocked position in conjunction with the door vane mechanism 19. When the first and second car doors 2 are to be moved in the opening direction by the door motor 15 when the car stops at the landing floor, the lock member 63 is located at the unlock position. When the first and second car doors 2 are to be moved in the opening direction by the door motor 15 when the car is located between floors, the lock member 63 is located at the locked position.

Therefore, when the car is positioned between floors, the movement of the first and second car doors 2 and 3 in the opening direction can be more reliably suppressed.

The lock member 63 rotates from the locked position to the unlocked position in conjunction with the movement of the first and second vanes 57 and 58 from the normal position to the interlocking position. The lock member 63 rotates from the unlock position to the lock position in conjunction with the movement of the first and second vanes 57 and 58 from the linked position to the opposite side of the normal position.

Therefore, when the car stops at a landing floor, the movement of the first and second car doors 2 and 3 in the opening direction is permitted, and when the car is located between floors, the movement of the first and second car doors 2 and 3 in the opening direction can be more reliably suppressed.

The lock member 63 rotates from the locked position to the unlocked position in conjunction with an operation in which the distance between the first vane 57 and the second vane 58 is reduced from a state in which the distance is larger than the distance when the coupling roller 45 is pinched. Then, the lock member 63 rotates from the unlock position to the lock position in conjunction with the operation in which the distance between the first vane 57 and the second vane 58 is smaller than the distance when the coupling roller 45 is pinched.

Therefore, when the car stops at a landing floor, the movement of the first and second car doors 2 and 3 in the opening direction is permitted, and when the car is located between floors, the movement of the first and second car doors 2 and 3 in the opening direction can be more reliably suppressed.

The lock member 63 rotates from the locked position to the unlocked position in conjunction with the movement of either one of the first and second vanes 57 and 58 moving from the normal position to the opposite side of the interlocking position in a state of contacting the coupling roller 45.

Therefore, even when the first car door 2, the second car door 3, the first landing door 32, or the second landing door 33 is to be manually moved when the car stops at the landing floor, the lock member 63 can be rotated to the unlocked position.

The cam portion 54b that rotates the lock member 63 in conjunction with the vane mechanism 19 is provided in the vane mechanism 19. Therefore, the lock member 63 can be rotated in conjunction with the door blade mechanism 19 with a simple structure.

Further, since the cam portion 54b is provided in the interlocking member 54, the lock member 63 can be rotated in interlocking with the door blade mechanism 19 with a simple configuration.

Further, no adjustment mechanism is required between the interlocking member 54 and the locking member 63. Further, by machining the cam portion 54b and the lock member 63 with high accuracy, the lock member 63 can be rotated between the locked position and the unlocked position at a more appropriate timing.

When the first car door 2 is fully closed, the operating shaft 52a is located at the first position. Then, a force for holding the acting shaft 52a at the first position is applied between the link member 54 and the lever 52.

Therefore, the lock member 63 can be more reliably held at the locked position during the travel of the car. Further, when the car is positioned between floors, the movement of the first and second car doors 2 and 3 in the opening direction can be more reliably suppressed. Further, the vibration of the vane mechanism 19 can be suppressed when the car travels.

When the first and second car doors 2 and 3 are to be moved in the opening direction by the door motor 15 when the car stops at the landing floor, the operating shaft 52a is moved to the second position. Therefore, the first and second car doors 2, 3 can be linked with the first and second landing doors 32, 33 more reliably.

When the car stops at the landing floor, the operating shaft 52a is moved to the second position when the car is to be manually moved in the opening direction of either the first and second car doors 2 and 3 or the first and second landing doors 32 and 33. Therefore, the first and second car doors 2, 3 can be linked with the first and second landing doors 32, 33 more reliably.

The cam portion may be provided in a member other than the interlocking member of the door vane mechanism.

The mechanism for rotating the lock member between the locked position and the unlocked position is not limited to the cam portion.

Further, gravity may be used as the force for holding the operation shaft at the first position.

Further, the acting shaft may be provided on the interlocking member, and the slide hole may be provided on the lever.

The type of the car door device is not limited to the type of fig. 1, and may be a center-opening type car door device. In this case, the latch may be provided to a car door that is opened to the opposite side. Also, the number of car doors is not limited to two.

In the above example, the door vane mechanism of the type in which the door coupling member is held by the first and second door vanes is shown. In contrast, the present invention is also applicable to a door vane mechanism in which the distance between a pair of door coupling members provided in a landing door is increased from between the pair of door coupling members by a first and a second door vane.

In this case, the lock member rotates from the unlock position to the lock position in conjunction with the operation in which the distance between the first vane and the second vane is greater than the distance when the distance between the pair of door coupling members is increased. The lock member is rotated from the locked position to the unlocked position in conjunction with an operation in which the distance between the first vane and the second vane is smaller than the distance between the first vane and the second vane when the first vane and the second vane are at the normal position.

The present invention can be applied to various types of elevators such as an elevator having a machine room, an elevator without a machine room, a double-deck elevator, and a single-shaft multi-car elevator. The single-shaft multi-car type is a type in which an upper car and a lower car disposed directly below the upper car are raised and lowered independently of each other in a common shaft.

Description of the reference symbols

2: a first car door; 15: a door motor; 19: a door vane mechanism; 33: a second landing door; 45: a connecting roller (door connecting member); 51: a lever shaft; 52: a rod; 52 a: an action shaft; 54: a linkage member; 54 a: a slide hole; 54 b: a cam portion; 57: a first door vane; 58: a second door vane; 61: a latch; 63: a locking member.