Elevator car door device

Abstract

In the elevator car door device, when the first car door is in the fully closed position, the third contact is held by the third cam. As a result, the car side connecting component is held in the door stop side position, the second cam is held in the unlocked position, and the movable locking member is held in the locked position. When the car is outside the door zone, if the first car door moves from the fully closed position to the opening direction, the car side connecting component shifts to the door frame side position. As a result, the second cam shifts to the non-unlocked position, the movable locking member is held in the locked position, and further movement of the first car door in the opening direction is prevented.

Description

Technical Field

[0001] The present invention relates to a car door device for opening and closing an elevator car entrance and exit. Background Art

[0002] In the existing elevator car door device, a door knife and a locking component are provided on the car door. The door knife can be displaced in the horizontal direction relative to the car door between an unlocking corresponding position and a locking corresponding position. The locking component can be displaced between the unlocking position and the locking position in conjunction with the movement of the door knife.

[0003] A fixed locking member and a guide cam are provided outside the car door. By hooking the locking member on the fixed locking member, the movement of the car door in the opening direction is prevented. A guide portion is provided on the locking member.

[0004] When the car door is in the fully closed position, the guide portion contacts the guide cam, whereby the locking member is held in the unlocked position and the door blade is held in the unlocking corresponding position (see, for example, Patent Document 1).

[0005] Prior art literature

[0006] Patent Literature

[0007] Patent Document 1: Japanese Patent No. 6250190 Summary of the invention

[0008] Problems to be solved by the invention

[0009] In the above-mentioned existing car door device, when the car door is in the fully closed position, the locking member is maintained in the unlocking position. However, from the aspect of reliability, preferably when the car door is in the fully closed position, the locking member is also located in the locking position.

[0010] The present invention is made to solve the above-mentioned problems, and its object is to obtain an elevator car door device which can prevent the car door from opening between floors and can keep the movable locking member in the locked position when the car door is in the fully closed position.

[0011] Means for solving problems

[0012] The elevator car door device of the present invention comprises: a first car door, which opens and closes the car entrance; a car-side connecting member, which is arranged on the first car door and is displaced in the horizontal direction relative to the first car door between a door stop side position and a door frame side position, the door frame side position being a position closer to the door frame side than the door stop side position; a fixed locking member, which is arranged on the first car door; and a movable locking member, which is arranged on the outside of the first car door, and is hooked on the fixed locking member to prevent the first car door from moving in the opening direction and is in the locked position to allow the first car door to move in the opening direction. a first cam disposed on the first car door and displaced in conjunction with a car-side connecting member; a first contact disposed on the first car door and displaced by the first cam; a second cam disposed on the first car door and displaced between an unlocked position and a non-unlocked position by the displacement of the first contact; a second contact disposed on the movable locking member; a third cam disposed on the outside of the first car door; and a third contact disposed on the first car door. The 3rd cam is guided to shift, thereby shifting the car side connecting component. When the first car door is in the fully closed position, the 3rd contact is held by the 3rd cam, thereby the car side connecting component is held in the door stop side position, the 2nd cam is held in the unlocked position, and the movable locking piece is held in the locked position. When the car is in the door zone, if the first car door moves from the fully closed position to the opening direction, the car side connecting component abuts against the interlocking roller of the interlocking device provided on the landing door, and the car side connecting component is shifted to the door frame side position. The first car door is prevented from moving in the unlocked position and the second contact is guided by the second cam located in the unlocked position to move the movable locking member to the unlocked position. Further movement of the first car door in the opening direction is allowed. When the car is outside the door area, if the first car door moves from the fully closed position to the opening direction, the car side connecting member moves to the door frame side position, and the first contact is guided by the first cam to move. As a result, the second cam moves to the non-unlocked position, the movable locking member is maintained in the locked position, and further movement of the first car door in the opening direction is prevented.

[0013] In addition, the elevator car door device of the present invention comprises: a first car door, which opens and closes the car entrance and exit; a second car door, which moves in a direction opposite to the first car door in conjunction with the first car door, thereby opening and closing the car entrance and exit; a car-side connecting member, which is provided on the first car door and is displaced in the horizontal direction relative to the first car door between a door stop side position and a door frame side position, the door frame side position being a position closer to the door frame side than the door stop side position; a fixed locking member, which is provided on the second car door; and a movable locking member, which is provided on the outside of the first car door. and is arranged on the outside of the second car door, and is displaced between a locked position hooked on the fixed locking member to prevent the first car door from moving in the opening direction and an unlocked position allowing the first car door to move in the opening direction; a first cam, which is arranged on the first car door and is displaced in conjunction with the car-side connecting member; a first contact, which is arranged on the first car door and is displaced by the guidance of the first cam; a second cam, which is arranged on the first car door, is displaced between an unlocked position and a non-unlocked position by the displacement of the first contact; a second contact, which is arranged on the movable locking member; a third cam, The 3rd cam is used to move the car side connecting member, and the 3rd cam is used to move the car side connecting member, so that the car side connecting member is kept in the door stop side position, the 2nd cam is kept in the unlocked position, and the movable locking member is kept in the locked position. When the car is in the door zone, if the 1st car door moves from the fully closed position to the opening direction, the car side connecting member abuts against the interlocking roller of the interlocking device provided on the landing door, and the car The car side connecting component is prevented from shifting to the door frame side position, and the second contact is guided by the second cam located in the unlocked position to shift the movable locking member to the unlocked position, and further movement of the first car door in the opening direction is allowed. When the car is outside the door area, if the first car door moves from the fully closed position to the opening direction, the car side connecting component is shifted to the door frame side position, and the first contact is shifted by the guidance of the first cam, thereby, the second cam is shifted to the non-unlocked position, the movable locking member is maintained in the locked position, and further movement of the first car door in the opening direction is prevented.

[0014] Effects of the Invention

[0015] According to the elevator car door device of the present invention, the car door can be prevented from opening between floors, and the movable locking member can be kept in the locked position when the car door is in the fully closed position. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic configuration diagram showing an elevator according to Embodiment 1.

[0017] Figure 2 Observed from the shaft side Figure 1Front view of the 1st and 2nd floor station doors.

[0018] Figure 3 Viewed from the landing side Figure 1 Front view of the 1st car door and the 2nd car door.

[0019] Figure 4 Yes Figure 3 The main view is shown enlargedly showing the important parts.

[0020] Figure 5 Yes Figure 4 The first upper connecting rod and the action component are shown in an enlarged front view.

[0021] Figure 6 It is shown Figure 5 A front view of the first upper link after rotating in the clockwise direction.

[0022] Figure 7 Is it going to open outside the gate area Figure 4 A front view showing an enlarged view of the first upper link and the operating components in the state of the first car.

[0023] Figure 8 is along Figure 4 A cross-sectional view taken along line VIII-VIII.

[0024] Fig. 9 is along Figure 4 A cross-sectional view taken along line IX-IX.

[0025] Fig.10 It is shown Figure 4 A front view of a state in which the first car door and the second car door are slightly moved in the opening direction.

[0026] Fig.11 It is shown Fig.10 A front view of a state in which the first car door and the second car door are further moved in the opening direction.

[0027] Fig.12 It indicates that you want to open the door outside the door area. Figure 4 A front view of the state of the first car door and the second car door.

[0028] Fig.13 This is a front view of the elevator car door device according to Embodiment 2 as viewed from the landing side. DETAILED DESCRIPTION

[0029] Hereinafter, embodiments will be described with reference to the drawings.

[0030] Implementation method 1.

[0031] Figure 11 is a schematic diagram showing the structure of an elevator according to Embodiment 1. In the figure, a machine room 2 is provided above a hoistway 1. In the machine room 2, a traction machine 3, a deflection sheave 4, and an elevator control device 5 are installed.

[0032] The hoisting machine 3 has a driving sheave 6, a hoisting machine motor (not shown), and a hoisting machine brake (not shown). The hoisting machine motor rotates the driving sheave 6. The hoisting machine brake keeps the driving sheave 6 stationary. In addition, the hoisting machine brake brakes the rotation of the driving sheave 6.

[0033] The suspension body 7 is hung around the driving sheave 6 and the deflector pulley 4. A plurality of ropes or a plurality of belts are used as the suspension body 7. A first end of the suspension body 7 is connected to the car 8. A second end of the suspension body 7 is connected to the counterweight 9.

[0034] The car 8 and the counterweight 9 are suspended by the suspension body 7, and the car 8 and the counterweight 9 are raised and lowered in the hoistway 1 by rotating the driving sheave 6. The elevator control device 5 controls the operation of the car 8 by controlling the traction machine 3.

[0035] A pair of car guide rails (not shown) and a pair of counterweight guide rails (not shown) are provided in the hoistway 1. The pair of car guide rails guide the car 8 to move upward and downward. The pair of counterweight guide rails guide the counterweight 9 to move upward and downward.

[0036] The car 8 has a car frame 10 and a car chamber 11. The car frame 10 is connected to the suspension body 7. The car chamber 11 is supported by the car frame 10. A first car door 12a and a second car door 12b are provided on the front surface of the car chamber 11. The first car door 12a and the second car door 12b slide horizontally in opposite directions to each other to open and close the car entrance.

[0037] A door controller 13 is provided on the car 8. The door controller 13 controls the opening and closing operations of the first car door 12a and the second car door 12b.

[0038] The first landing door 14a and the second landing door 14b are respectively provided at the landings of the plurality of floors. The first landing door 14a and the second landing door 14b slide horizontally in opposite directions to each other to open and close the landing entrance and exit. In addition, the first landing door 14a and the second landing door 14b are opened and closed in conjunction with the first car door 12a and the second car door 12b when the car 8 stops at a floor.

[0039] Figure 2 Viewed from the shaft 1 side Figure 1The front view of the first landing door 14a and the second landing door 14b. A landing door frame 15 is fixed to the upper part of the landing entrance. The landing door frame 15 is provided with a landing door track 16. The landing door track 16 is arranged parallel to the width direction of the landing entrance and horizontally. The width direction of the landing entrance is a direction parallel to the opening and closing direction of the first landing door 14a and the second landing door 14b. Figure 2 left and right direction.

[0040] A first floor door pulley 17 is provided at a first end in the length direction of the floor door frame 15. A second floor door pulley 18 is provided at a second end in the length direction of the floor door frame 15. The length direction of the floor door frame 15 is a direction parallel to the width direction of the floor entrance. A ring-shaped interlocking rope 19 is hung around the first floor door pulley 17 and the second floor door pulley 18.

[0041] The first landing door 14a and the second landing door 14b each include a landing door panel 20 and a landing door hanger 21. Each landing door hanger 21 is fixed to the upper portion of the corresponding landing door panel 20.

[0042] A plurality of landing door rollers 22 are provided on each landing door hanger 21. Each landing door roller 22 rolls and moves on the landing door track 16 when the first landing door 14a and the second landing door 14b are opened and closed. The first landing door 14a and the second landing door 14b are hung from the landing door track 16 and open and close along the landing door track 16.

[0043] The first landing door 14a is connected to the lower portion of the interlocking rope 19 via the first landing door coupling 23. The second landing door 14b is connected to the upper portion of the interlocking rope 19 via the second landing door coupling 24.

[0044] When the interlocking rope 19 circulates through the opening and closing action of the first landing door 14a, the second landing door 14b moves in the opposite direction to the first landing door 14a. The landing door interlocking mechanism 25 includes the first landing door pulley 17, the second landing door pulley 18, the interlocking rope 19, the first landing door coupling 23, and the second landing door coupling 24. In addition, the landing door interlocking mechanism 25 interlocks the opening and closing action of the second landing door 14b with that of the first landing door 14a.

[0045] An interlocking device 26 is provided between the first landing door 14a and the landing door frame 15. The interlocking device 26 prevents the landing door 14 from being opened from the landing side when the car 8 is not stopped at a landing. In addition, the interlocking device 26 has a hook fitting 27, an interlocking latch 28, a fixed side interlocking roller 29, and a movable side interlocking roller 30.

[0046] The hook fitting 27 is fixed to the landing door frame 15. The interlocking latch 28 is rotatably mounted on the landing door hanger 21 of the first landing door 14a. When the first landing door 14a and the second landing door 14b are in the fully closed position, the end portion of the interlocking latch 28 is hooked on the hook fitting 27, thereby preventing the first landing door 14a and the second landing door 14b from moving in the opening direction.

[0047] The fixed-side interlock roller 29 is disposed coaxially with the rotation axis of the interlock latch 28. The movable-side interlock roller 30 is attached to the interlock latch 28. The interlock latch 28 and the movable-side interlock roller 30 rotate around the rotation axis of the interlock latch 28.

[0048] Figure 3 Viewed from the landing side Figure 1 The front view of the first car door 12a and the second car door 12b. A car door frame 31 is fixed to the upper part of the car entrance. A car door rail 32 is provided on the car door frame 31. The car door rail 32 is arranged parallel to the width direction of the car entrance and horizontally. The width direction of the car entrance is a direction parallel to the opening and closing direction of the first car door 12a and the second car door 12b. Figure 3 left and right direction.

[0049] A first car door pulley 33 is provided at a first end in the length direction of the car door frame 31. A second car door pulley 34 is provided at a second end in the length direction of the car door frame 31. The length direction of the car door frame 31 is a direction parallel to the width direction of the car entrance. An endless drive belt 35 is hung around the first car door pulley 33 and the second car door pulley 34.

[0050] The first car door 12a and the second car door 12b each have a car door panel 36 and a car door hanger 37. Each car door hanger 37 is fixed to the upper portion of the corresponding car door panel 36. The first car door 12a and the second car door 12b are hung from the car door rail 32 and open and close along the car door rail 32.

[0051] The first car door 12a is connected to the lower portion of the driving belt 35 via a first car door coupling 38. The second car door 12b is connected to the upper portion of the driving belt 35 via a second car door coupling 39.

[0052] A door motor 40 is fixed to the car door frame 31. The rotation of the door motor 40 is transmitted to the first car door pulley 33. When the first car door pulley 33 rotates, the drive belt 35 circulates and the second car door pulley 34 rotates. As a result, the first car door 12a and the second car door 12b perform opening and closing operations.

[0053] Figure 4 Yes Figure 3The first car door 12a is fixed with a first support plate 44 as a mounting member. A fixed locking member 45 is fixed to the first support plate 44. That is, the fixed locking member 45 is provided on the first car door 12a through the first support plate 44. In addition, the fixed locking member 45 protrudes from the side surface of the upper end portion of the first support plate 44 toward the second car door 12b.

[0054] A second support plate 46 is fixed to the car door frame 31. A movable lock 47 is attached to the second support plate 46. That is, the movable lock 47 is provided outside the first car door 12a.

[0055] The movable locking member 47 can rotate around the locking member rotation axis 47a. Figure 4 The locked position shown is the same as Fig.10 The locked position is a position where the movable locking member 47 is hooked on the fixed locking member 45 to prevent the first car door 12a from moving in the opening direction. The unlocked position is a position where the first car door 12a is allowed to move in the opening direction.

[0056] The locking member rotation shaft 47a is provided at the middle portion of the movable locking member 47. A hook-shaped locking portion 47b is provided at one end portion of the movable locking member 47. When the first car door 12a and the second car door 12b are in the fully closed position, the locking portion 47b is located closer to the door frame side of the first car door 12a than the terminal end portion of the fixed locking member 45.

[0057] When the first car door 12a attempts to move in the opening direction with the movable lock 47 held in the locked position, the locking portion 47b is hooked on the distal end of the fixed lock 45. Thus, the movement of the first car door 12a in the opening direction is prevented.

[0058] A tension spring 48 is provided between the second support plate 46 and the movable locking member 47. The tension spring 48 generates a force that causes the movable locking member 47 to move toward the Figure 4 The counterclockwise rotation force of the movable locking member 47 is the force that keeps the movable locking member 47 in the locked position. The movable locking member 47 is always subjected to the force in the direction of displacement toward the locked position.

[0059] A locking member stopper 49 is mounted on the second support plate 46. The locking member stopper 49 prevents the movable locking member 47 from rotating beyond the locking position. The upper and lower positions of the locking member stopper 49 can be adjusted. The movable locking member 47 is pressed against the locking member stopper 49 by its own weight and the force of the tension spring 48, and is thus held in the locking position.

[0060] A lock detection switch 50 is mounted on the second support plate 46. The lock detection switch 50 is used to detect that the movable lock member 47 is located at the lock position.

[0061] An operating piece 51 is fixed to the other end of the movable locking member 47. When the movable locking member 47 is held in the locked position, the operating piece 51 contacts the locking detection switch 50. As a result, the locking detection switch 50 is turned on.

[0062] Furthermore, when the movable locking member 47 is not held in the locked position, the operating piece 51 is separated from the locking detection switch 50. Thus, the locking detection switch 50 is turned off.

[0063] In the elevator control device 5, the conditions for enabling the car 8 to be raised or lowered are that the first car door 12a and the second car door 12b are located at the fully closed position and the movable lock 47 is held at the locked position.

[0064] A car-side connecting member 54 having an L-shaped cross section is attached to the first support plate 44 via a first parallel link mechanism 53. The car-side connecting member 54 is disposed vertically.

[0065] The first parallel link mechanism 53 includes an L-shaped first lower link 55 and a rod-shaped first upper link 56 .

[0066] A first lower link rotation shaft 55a is provided at a middle portion, that is, a curved portion, of the first lower link 55. The first lower link 55 is attached to the first support plate 44 so as to be rotatable about the first lower link rotation shaft 55a.

[0067] The lower end of the first lower link 55 is rotatably connected to the lower end of the car-side connecting member 54. The lower end of the first lower link 55 is located closer to the second car door 12b than the first lower link rotating shaft 55a.

[0068] A first upper link rotating shaft 56a serving as a first cam rotating shaft is provided at an upper end portion of the first upper link 56. The first upper link 56 is attached to the first support plate 44 so as to be rotatable about the first upper link rotating shaft 56a.

[0069] The lower end of the first upper link 56 is rotatably connected to the middle portion of the car-side connecting member 54. The lower end of the first upper link 56 is located closer to the second car door 12b than the first upper link rotating shaft 56a.

[0070] The car-side connecting member 54 can be connected to the first lower link 55 and the first upper link 56 by rotating. Figure 4 The door stop side position shown is consistent with Fig.12The door frame side positions shown are displaced in the horizontal direction with respect to the first car door 12a. The door frame side position is a position closer to the door frame side of the first car door 12a than the door stop side position with respect to the first car door 12a.

[0071] The first upper link 56 rotates about a first upper link rotating shaft 56 a in conjunction with the car-side connecting member 54 .

[0072] A first cam 56b is provided at the lower end portion of the first upper link 56. The first cam 56b is provided on the first car door 12a via the first support plate 44. The first cam 56b is displaced in conjunction with the car-side coupling member 54.

[0073] The first support plate 44 is provided with an operating member 57. An operating member rotation shaft 57a is provided in the middle portion of the operating member 57. The operating member 57 is provided on the first support plate 44 so as to be rotatable around the operating member rotation shaft 57a.

[0074] A roller-shaped first contact 58 is provided at a first end portion of the operating member 57. The first contact 58 is provided at the first car door 12a via the operating member 57 and the first support plate 44. The first contact 58 is rotatable relative to the operating member 57.

[0075] In addition, the first contact 58 is always in contact with the first cam 56b. In addition, the first contact 58 is displaced while being guided by the first cam 56b.

[0076] A second cam 57b is provided at a second end portion of the operating member 57. The second end portion of the operating member 57 is an end portion located on the opposite side to the first end portion of the operating member 57 with respect to the operating member rotation axis 57a.

[0077] The second cam 57b is provided on the first car door 12a via the first support plate 44. In addition, the second cam 57b can be moved by the displacement of the first contact 58. Fig.10 The unlocked position shown is the same as Fig.12 That is, the second cam 57b can be displaced by rotating between the unlock position and the unlock position.

[0078] The movable lock 47 is formed with a protrusion 47c. The protrusion 47c protrudes obliquely downward from the middle of the movable lock 47. A roller-shaped second contact 59 is provided at the lower end of the protrusion 47c. The second contact 59 is rotatable relative to the protrusion 47c.

[0079] The second cam 57b contacts the second contact 59 during the normal opening operation of the first car door 12a, rotating the movable locking member 47 to the unlocked position. When no external force is applied from the second cam 57b, the movable locking member 47 stays in the locked position by its own weight and the elastic force of the tension spring 48. Alternatively, the movable locking member 47 may stay in the locked position by a counterweight.

[0080] The third cam 60 is fixed to the car door hanger 37 of the second car door 12b. That is, the third cam 60 is fixed to the second car door 12b which is the outside of the first car door 12a.

[0081] A roller-shaped third contact 61 is provided at the upper end of the first lower link 55. The upper end of the first lower link 55 is located closer to the second car door 12b than the first lower link rotation axis 55a. The third contact 61 is provided on the first car door 12a via the first lower link 55 and the first support plate 44.

[0082] The first cam 56 b , the first contact 58 , the second cam 57 b , and the third contact 61 are mounted on the common first support plate 44 .

[0083] The third contact 61 is rotatable with respect to the first lower link 55. The third contact 61 is displaced by being guided by the third cam 60, thereby displacing the car-side connecting member 54.

[0084] When the first car door 12 a and the second car door 12 b are located at the fully closed position, the third contactor 61 comes into contact with the third cam 60 .

[0085] The car side connection member 54 is always subjected to a force in a direction of displacement toward the door pocket side, that is, toward the door pocket side position, due to the action of gravity or elastic force. In addition, the second cam 57b is always subjected to a force in a direction of displacement toward the non-unlocking position.

[0086] When the first car door 12a and the second car door 12b are in the fully closed position, the third contact 61 contacts the third cam 60. Thus, the car-side connecting member 54 is held at the door stop side position. In addition, the displacement of the second cam 57b to the non-unlocking position side is prevented.

[0087] A pair of connection member stoppers 62 are provided on the first support plate 44. The pair of connection member stoppers 62 restricts the movable range of the car-side connection member 54 to move toward the door stop side.

[0088] When the first car door 12 a and the second car door 12 b are located at the fully closed position, a gap is ensured between the car-side connecting member 54 and the pair of connecting member stoppers 62 .

[0089] A guide door blade 64 having an L-shaped cross section is attached to the first support plate 44 via a second parallel link mechanism 63. The guide door blade 64 is arranged parallel to the car-side connecting member 54, that is, vertically.

[0090] The second parallel link mechanism 63 includes a rod-shaped second lower link 65 and a rod-shaped second upper link 66 .

[0091] The lower end of the second lower link 65 is rotatably connected to the first support plate 44. The upper end of the second lower link 65 is rotatably connected to the lower end of the guide blade 64.

[0092] The lower end of the second upper link 66 is rotatably connected to the first support plate 44. The upper end of the second upper link 66 is rotatably connected to the middle portion of the guide blade 64.

[0093] Furthermore, the guide door blade 64 is displaceable in the opening and closing direction of the first car door 12 a relative to the first car door 12 a by the rotation of the second lower link 65 and the second upper link 66 .

[0094] A guide roller 67 is provided at the upper end portion of the guide door blade 64. A guide member 68 is fixed to the car door frame 31. The guide roller 67 comes into contact with the guide member 68 when the first car door 12a is located at the fully closed position.

[0095] The guide door blade 64 is always subjected to a force in the direction of displacement toward the door stop side of the first car door 12a due to the action of gravity or elastic force. When the first car door 12a is in the fully closed position, the guide roller 67 abuts against the guide member 68, thereby separating the guide door blade 64 from the interlocking rollers 29, 30.

[0096] On the other hand, when the first car door 12a moves in the opening direction, the guide door blade 64 is displaced toward the car side connecting member 54, and the interval between the car side connecting member 54 and the guide door blade 64 becomes smaller. In addition, the interlocking rollers 29 and 30 are held between the car side connecting member 54 and the guide door blade 64.

[0097] Figure 5 Yes Figure 4 The first cam 56b is an enlarged front view of the first upper link 56 and the operating member 57. The first cam 56b has a first guide surface 56c and a second guide surface 56d. The first guide surface 56c and the second guide surface 56d respectively guide the first contact 58. The second guide surface 56d is adjacent to the first guide surface 56c.

[0098] The first guide surface 56c is in an arc shape with the first upper link rotation axis 56a as the center. Therefore, a first straight line L1 perpendicular to the tangent line between the first guide surface 56c and the first contact 58 and passing through the contact point between the first guide surface 56c and the first contact 58 passes through the first upper link rotation axis 56a.

[0099] When the first car door 12a is located at the fully closed position, the first contact 58 comes into contact with the first guide surface 56c.

[0100] Figure 6 It is shown Figure 5 The first contact 58 is guided by the first guide surface 56c until the car side connecting member 54 moves from the door stop side position to the door frame side by a set amount.

[0101] Figure 7 Is it going to open outside the gate area Figure 4 The first upper link 56 and the operating member 57 are enlarged and shown in the front view of the first car door 12a in the state of the first car door 12a. The door zone is a zone in the hoistway 1 in which the opening operation of the first car door 12a and the second car door 12b is allowed.

[0102] exist Figure 7 In the state of , the second cam 57b is located at the non-unlocking position. When the second cam 57b is located at the non-unlocking position, the first contact 58 contacts the second guide surface 56d.

[0103] The second guide surface 56d is in an arc shape that curves in the same direction as the outer peripheral surface of the first contact 58. The second straight line L2, which is perpendicular to the tangent line between the second guide surface 56d and the first contact 58 and passes through the contact point between the second guide surface 56d and the first contact 58, is closer to horizontal than the first straight line L1.

[0104] Furthermore, the second straight line L2 passes through a position closer to the operating member rotation shaft 57a, which is the rotation center of the second cam 57b, than the first straight line L1 does.

[0105] Figure 8 is along Figure 4 A cross-sectional view of the line VIII-VIII. In addition, Fig. 9 is along Figure 4 When the car 8 stops at a floor, the car-side connecting member 54 is arranged at a position closer to the door stop than the interlocking rollers 29 and 30, and the guide door knife 64 is arranged at a position closer to the door cover than the interlocking rollers 29 and 30.

[0106] When viewed from directly above, the interlocking rollers 29 and 30 are arranged between the car sill line S1 and the landing sill line S2. The car sill line S1 is a straight line obtained by viewing the landing side end surface of the car sill from directly above. The landing sill line S2 is a straight line obtained by viewing the car side end surface of the landing sill from directly above.

[0107] When viewed from directly above, the first upper link 56 overlaps with the first lower link 55. Fig.12 As shown, when viewed from the front, the second cam 57b overlaps with the third cam 60 when located at the unlock position.

[0108] Next, the action is explained. Figure 4 As shown, when the first car door 12a is in the fully closed position, the third contact 61 abuts against the third cam 60. In addition, the movable locking member 47 is maintained in the locked position. In addition, the car side connecting member 54 is located at the door stop side position. In addition, the car side connecting member 54 and the guide door blade 64 are separated from the interlocking rollers 29 and 30.

[0109] Fig.10 It is shown Figure 4 When the first car door 12a starts to move in the opening direction, i.e., the door pocket side, and the third contact 61 separates from the third cam 60, the car side connecting member 54 is about to shift to the door pocket side.

[0110] However, the car-side connecting member 54 abuts against the interlocking rollers 29 and 30, and the displacement of the car-side connecting member 54 to the door pocket side is prevented. As a result, the second cam 57b does not shift to the non-unlocking position.

[0111] Therefore, when the first car door 12a further moves in the opening direction, the second contact 59 is pushed up by the second cam 57b, and the movable locking member 47 rotates to the unlocking position.

[0112] Furthermore, the interlocking rollers 29 and 30 are sandwiched between the car-side coupling member 54 and the guide door blade 64, the interlocking latch 28 rotates, and the interlocking device 26 of the landing door device is also brought into the unlocked state.

[0113] Fig.11 It is shown Fig.10 1 and 12b are further moved in the opening direction. When the first car door 12a is further moved in the opening direction, the second contact 59 is separated from the second cam 57b, and the movable locking member 47 returns to the locked position.

[0114] Furthermore, since the interlocking rollers 29, 30 are held between the car-side connecting member 54 and the guide door blade 64, the first car door 12a and the first landing door 14a move in the opening direction integrally. Furthermore, the second car door 12b and the second landing door 14b also move in the opening direction synchronously.

[0115] Next, the following describes a situation where the passenger in the car room 11 attempts to pry open the first car door 12a and the second car door 12b when the car 8 stops outside the door zone due to some abnormality. Fig.12 As shown, since the interlocking rollers 29 and 30 are not in contact with the car-side connecting member 54, the displacement of the car-side connecting member 54 to the door frame side position is not prevented.

[0116] Therefore, when the third contact 61 is separated from the third cam 60, the first upper link 56 moves to Fig.12 At this time, the first contact 58 is guided by the first guide surface 56c to move relative to the first cam 56b and reaches the second guide surface 56d.

[0117] As a result, the action component 57 moves to Fig.12 The second cam 57b is shifted to the unlocked position by rotating the second cam 57b in the clockwise direction. Therefore, the second cam 57b does not contact the second contact 59, and the movable locking member 47 is maintained in the locked position. As a result, the movable locking member 47 is hooked on the fixed locking member 45, and further movement of the first car door 12a in the opening direction is prevented.

[0118] Thus, when the first car door 12a is in the fully closed position, the third contact 61 is held by the third cam 60, thereby holding the car-side connecting member 54 in the door-stop side position. In addition, the first contact 58 contacts the first guide surface 56c of the first cam 56b. Thus, the second cam 57b is held in the unlocked position, and the movable locking member 47 is held in the locked position.

[0119] Furthermore, when the car 8 is located in the door zone, if the first car door 12a moves from the fully closed position to the opening direction, the car side connecting member 54 abuts against the interlocking rollers 29 and 30. Therefore, the displacement of the car side connecting member 54 to the door frame side position is prevented. In addition, the second contact 59 is guided by the second cam 57b located in the unlocking position to displace the movable locking member 47 to the unlocking position. Thus, further movement of the first car door 12a in the opening direction is allowed.

[0120] When the car 8 is outside the door zone, if the first car door 12a moves from the fully closed position to the opening direction, the third contact 61 is guided by the third cam 60, and the car-side coupling member 54 is displaced to the door pocket-side position.

[0121] Therefore, the first upper link 56 rotates, and the first contact 58 is displaced under the guidance of the first cam 56b. As a result, the second cam 57b is displaced to the non-unlocking position, the movable locking member 47 is held in the locking position, and further movement of the first car door 12a in the opening direction is prevented.

[0122] In such an elevator car door device, the door opening prevention function works when the interlocking rollers 29 and 30 are not within the vertical range of the car-side connecting member 54, so there is no need to prepare an unlocking cam on the landing side. Therefore, the first car door 12a and the second car door 12b can be prevented from opening between floors with a simple structure.

[0123] In addition, when the first car door 12a and the second car door 12b are in the fully closed position, the movable locking member 47 can be kept in the locked position. In addition, since the movable locking member 47 is not moved from the locked position to the unlocked position unnecessarily, failures and malfunctions can be suppressed, and reliability can be improved.

[0124] Furthermore, since the second cam 57b is displaced independently of the third contactor 61, the position of the car-side coupling member 54 when the second cam 57b is displaced to the unlocked position can be arbitrarily set.

[0125] Furthermore, the degree of freedom of displacement of the second cam 57 b with respect to the angle change of the first upper link 56 can be increased.

[0126] Therefore, even when unlocking is required at a wide range of positions of the car-side coupling member 54 in consideration of forcibly opening the first car door 12a and the second car door 12b from the landing, the rotation angle of the operating member 57 can be suppressed.

[0127] In addition, the second cam 57b can be rapidly displaced by displacing the car-side coupling member 54 within a small range. Thus, the dimension between the first car door 12a and the second car door 12b when locked can be reduced while satisfying the restriction of unlocking within a necessary range.

[0128] Furthermore, the first cam 56b, the first contact 58, and the second cam 57b are attached to the common first support plate 44. Therefore, the positions of the plurality of components can be easily adjusted.

[0129] Furthermore, since the third contacts 61 are also mounted on the first support plate 44 , the positions of a plurality of components can be adjusted more easily.

[0130] The first guide surface 56c is in an arc shape with the first upper link rotation axis 56a as the center. When the first car door 12a is located at the fully closed position, the first contact 58 comes into contact with the first guide surface 56c.

[0131] Therefore, even if the second contact 59 jumps onto the second cam 57b when the door is closed, the car side connecting member 54 is not easily subjected to the force in the width direction of the car entrance due to this action. Thus, the influence on the action of the first car door 12a and the second car door 12b can be reduced.

[0132] In addition, the second straight line L2 is closer to the horizontal than the first straight line L1. Thus, once locked, the force required to return the second cam 57b to its original position in order to close the first car door 12a can be made very strong. Therefore, even if the user in the car room 11 shakes the first car door 12a or the second car door 12b rapidly in the opening and closing direction, the second cam 57b can be prevented from returning to the unlocked position.

[0133] Furthermore, the first cam 56b is provided on the first upper link 56, and the third contact 61 is provided on the first lower link 55. Therefore, the movement of the second cam 57b and the movement of the third contact 61 can be made independent of each other with a simple structure.

[0134] Furthermore, when viewed from directly above, the first upper link 56 overlaps with the first lower link 55. Furthermore, when viewed from the front, the second cam 57b overlaps with the third cam 60 when located at the unlocking position. Therefore, the structure can be made compact.

[0135] Furthermore, the car-side coupling member 54 is always subjected to a force in a direction of displacement toward the door pocket side position, and the second cam 57b is always subjected to a force in a direction of displacement toward the non-unlocking position. Therefore, the reliability can be further improved.

[0136] In addition, the movable locking member 47 is always subjected to a force in a direction of displacement toward the locking position, so that reliability can be further improved.

[0137] Furthermore, since the locking detection switch 50 detects that the movable locking member 47 is located at the locking position, erroneous operation can be detected more reliably, and reliability can be further improved.

[0138] Implementation method 2.

[0139] Next, Fig.13 This is a front view of the elevator car door device according to Embodiment 2 as seen from the landing side. The fixed lock 45 according to Embodiment 2 is fixed to the car door hanger 37 of the second car door 12b.

[0140] The movable lock 71 is provided on the car door frame 31 via the second support plate 46. That is, the movable lock 71 is provided on the outside of the first car door 12a, and is provided on the outside of the second car door 12b.

[0141] The movable locking member 71 can rotate around the locking member rotation axis 71a. Fig.13 The device is displaceable between a locked position (shown) and an unlocked position (not shown).

[0142] The locked position is a position where the movable locking member 71 is hooked on the fixed locking member 45 and the first car door 12a is prevented from moving in the opening direction. Fig.13 The position after the locking position is rotated in the clockwise direction is a position where the first car door 12a is allowed to move in the opening direction.

[0143] The locking member rotation shaft 71a is provided in the middle part of the movable locking member 71. A hook-shaped locking portion 71b is provided at the end of the movable locking member 71 on the side opposite to the first car door 12a. When the first car door 12a and the second car door 12b are in the fully closed position, the locking portion 71b is located at a position closer to the door frame side of the second car door 12b than the terminal end of the fixed locking member 45.

[0144] When the first car door 12a attempts to move in the opening direction with the movable lock 71 held in the locked position, the locking portion 71b is hooked on the distal end of the fixed lock 45. Thus, the movement of the first car door 12a in the opening direction is prevented.

[0145] A counterweight 72 is mounted on the end of the movable locking member 71 on the opposite side to the locking portion 71b. The movable locking member 71 is pressed against the locking member stopper 49 by its own weight, the force of the tension spring 48, and the gravity acting on the counterweight 72, and is thus held in the locked position. That is, the movable locking member 71 is always subjected to a force in the direction of displacement toward the locked position.

[0146] A protrusion 71c is formed on the movable lock 71. The protrusion 71c protrudes obliquely downward from the middle portion of the movable lock 71. The second contact 59 is provided at the lower end portion of the protrusion 71c.

[0147] In the second embodiment, when the first car door 12a is in the fully closed position, the third contact 61 is held by the third cam 60, thereby holding the car-side connecting member 54 in the door-stop side position. In addition, the first contact 58 contacts the first guide surface 56c of the first cam 56b. As a result, the second cam 57b is held in the unlocked position, and the movable locking member 71 is held in the locked position.

[0148] Furthermore, when the car 8 is located in the door zone, if the first car door 12a moves from the fully closed position to the opening direction, the car side connecting member 54 abuts against the interlocking rollers 29 and 30. Therefore, the displacement of the car side connecting member 54 to the door frame side position is prevented. Furthermore, the second contact 59 is guided by the second cam 57b located in the unlocking position to displace the movable locking member 71 to the unlocking position. Thus, further movement of the first car door 12a in the opening direction is allowed.

[0149] When the car 8 is outside the door zone, if the first car door 12a moves from the fully closed position to the opening direction, the third contact 61 is guided by the third cam 60, and the car-side coupling member 54 is displaced to the door pocket-side position.

[0150] Therefore, the first upper link 56 rotates, and the first contact 58 is displaced under the guidance of the first cam 56b. As a result, the second cam 57b is displaced to the non-unlocking position, the movable locking member 71 is held in the locking position, and further movement of the first car door 12a in the opening direction is prevented.

[0151] The other structures and operations are the same as those in the first embodiment.

[0152] By such a structure, the first car door 12a and the second car door 12b can also be prevented from opening between floors. In addition, when the first car door 12a and the second car door 12b are located at the fully closed position, the movable locking member 71 can be maintained at the locked position.

[0153] Furthermore, since the car-side connecting member 54 is provided on the first car door 12a and the fixed locking member 45 is provided on the second car door 12b, it is convenient to install equipment.

[0154] In Embodiment 1 and Embodiment 2, the structure capable of displacing the guide door blade 64 in the horizontal direction is not essential, and the guide door blade 64 may be fixed to the first car door 12a.

[0155] In addition, in Embodiment 1 and Embodiment 2, the structure in which the interlocking rollers 29 and 30 are held between the car-side connecting member 54 and the guide door blade 64 is not essential. For example, the car-side connecting member 54 and the guide door blade 64 may be arranged between the fixed-side interlocking roller 29 and the movable-side interlocking roller 30. In this case, the car-side connecting member 54 is arranged on the door frame side of the guide door blade 64.

[0156] In Embodiment 1 and Embodiment 2, the first lower link 55 and the first upper link 56 may be oriented in opposite directions. Similarly, the direction in which the movable locking member 47 rotates from the locked position to the unlocked position may be reversed.

[0157] In the first and second embodiments, the first cam 56 b may be provided on the first lower link 55 , and the third contact 61 may be provided on the first upper link 56 .

[0158] Furthermore, in Embodiment 1 and Embodiment 2, the third cam 60 may be fixed to the car door frame 31 .

[0159] Furthermore, in Embodiment 1 and Embodiment 2, the third contact 61 may be provided on the car-side coupling member 54 .

[0160] In addition, Fig.12 In the embodiment of the present invention, the third contactor 61 is separated from the third cam 60. However, the third contactor 61 may contact the third cam 60 as long as the second cam 57b can be displaced to the non-unlocking position when the further movement of the first car door 12a in the opening direction outside the door zone is prevented.

[0161] In addition, although the car door device of the center-split type is shown in Embodiment 1 and Embodiment 2, the car door device may be of the single-opening type. In this case, the third cam 60 is fixed to the car door frame 31 .

[0162] In addition, the types of elevators are not limited to Figure 1 Type, for example, can also be a 2:1 roping method.

[0163] In addition, the elevator may be a machine room-less elevator, a double-deck elevator, a single-shaft multi-car elevator, etc. The single-shaft multi-car elevator is a system in which an upper car and a lower car arranged just below the upper car are independently raised and lowered in a common shaft.

[0164] Description of symbols

[0165] 8: car; 12a: 1st car door; 12b: 2nd car door; 44: 1st supporting plate (installing part); 45: fixed locking part; 47, 71: movable locking part; 53: 1st parallel linkage mechanism; 54: car side connecting part; 55: 1st lower link; 56: 1st upper link; 56a: 1st upper link rotation axis (1st cam rotation axis); 56b: 1st cam; 56c: 1st guide surface; 56d: 2nd guide surface; 57b: 2nd cam; 58: 1st contact; 59: 2nd contact; 60: 3rd cam; 61: 3rd contact; L1: 1st straight line; L2: 2nd straight line.

Claims

1. An elevator car door device, wherein: The elevator car door device comprises: A first car door, which opens and closes the car entrance and exit; a car-side connecting member, which is provided on the first car door and is displaced in the horizontal direction relative to the first car door between a door-stop-side position and a door-frame-side position, wherein the door-frame-side position is a position closer to the door-frame side than the door-stop-side position; A fixed locking member, which is arranged on the first car door; a movable locking member disposed on the outside of the first car door and shifted between a locked position hooked on the fixed locking member to prevent the first car door from moving in an opening direction and an unlocked position allowing the first car door to move in an opening direction; a first cam provided on the first car door and displaced in conjunction with the car-side connecting member; a first contact, which is provided at the first car door and is displaced by being guided by the first cam; a second cam provided on the first car door and displaced between an unlocked position and a non-unlocked position by displacement of the first contact; a second contact, which is disposed on the movable locking member; a third cam disposed outside the first car door; as well as a third contactor provided at the first car door and displaced by being guided by the third cam, thereby displacing the car-side connecting member; When the first car door is in the fully closed position, the third contact is held by the third cam, whereby the car-side connecting member is held at the door stop side position, the second cam is held at the unlocked position, and the movable locking member is held at the locked position. When the car is in the door zone, if the first car door moves from the fully closed position to the opening direction, the car side connecting component abuts against the interlocking roller of the interlocking device provided on the landing door, the displacement of the car side connecting component to the door frame side position is prevented, and the second contact is guided by the second cam located in the unlocking position to displace the movable locking member to the unlocking position, and further movement of the first car door in the opening direction is allowed. When the car is outside the door area, if the first car door moves from the fully closed position to the opening direction, the car side connecting component shifts to the door frame side position, and the first contact is shifted by being guided by the first cam, thereby, the second cam shifts to the non-unlocking position, the movable locking part is maintained in the locked position, and further movement of the first car door in the opening direction is prevented.

2. The elevator car door device according to claim 1, wherein: The first cam, the first contact, and the second cam are mounted on a common mounting member.

3. The elevator car door device according to claim 1, wherein: The first cam has a first guide surface for guiding the first contact and is rotatable around a first cam rotation axis. The first guide surface is in an arc shape with the first cam rotation axis as the center. When the first car door is located at the fully closed position, the first contact comes into contact with the first guide surface.

4. The elevator car door device according to claim 2, wherein: The first cam has a first guide surface for guiding the first contact and is rotatable around a first cam rotation axis. The first guide surface is in an arc shape with the first cam rotation axis as the center. When the first car door is located at the fully closed position, the first contact comes into contact with the first guide surface.

5. The elevator car door device according to claim 3, wherein: The first cam has a second guide surface adjacent to the first guide surface. When the second cam is located at the unlocking position, the first contact comes into contact with the second guide surface. The second straight line is closer to the horizontal than the first straight line, the first straight line is a straight line perpendicular to the tangent line between the first guide surface and the first contact and passes through the contact point between the first guide surface and the first contact, and the second straight line is a straight line perpendicular to the tangent line between the second guide surface and the first contact and passes through the contact point between the second guide surface and the first contact.

6. The elevator car door device according to claim 4, wherein: The first cam has a second guide surface adjacent to the first guide surface. When the second cam is located at the unlocking position, the first contact comes into contact with the second guide surface. The second straight line is closer to the horizontal than the first straight line, the first straight line is a straight line perpendicular to the tangent line between the first guide surface and the first contact and passes through the contact point between the first guide surface and the first contact, and the second straight line is a straight line perpendicular to the tangent line between the second guide surface and the first contact and passes through the contact point between the second guide surface and the first contact.

7. The elevator car door device according to any one of claims 1 to 6, wherein: The car-side connecting member is provided on the first car door via a parallel link mechanism. The parallel linkage mechanism comprises a lower link and an upper link, The first cam is provided on either the lower link or the upper link. The third contact is provided on the other of the lower link and the upper link.

8. The elevator car door device according to claim 7, wherein: When viewed from directly above, the upper link overlaps the lower link. When viewed from the front, the second cam overlaps with the third cam when located at the unlocking position.

9. An elevator car door device, wherein: The elevator car door device comprises: A first car door, which opens and closes the car entrance and exit; a second car door which moves in a direction opposite to the first car door in conjunction with the first car door, thereby opening and closing the car entrance; a car-side connecting member, which is provided on the first car door and is displaced in the horizontal direction relative to the first car door between a door-stop-side position and a door-frame-side position, wherein the door-frame-side position is a position closer to the door-frame side than the door-stop-side position; A fixed locking member, which is arranged on the second car door; a movable locking member, which is arranged outside the first car door and outside the second car door, and is displaced between a locked position hooked on the fixed locking member to prevent the first car door from moving in the opening direction and an unlocked position allowing the first car door to move in the opening direction; a first cam provided on the first car door and displaced in conjunction with the car-side connecting member; a first contact, which is provided at the first car door and is displaced by being guided by the first cam; a second cam provided on the first car door and displaced between an unlocked position and a non-unlocked position by displacement of the first contact; a second contact, which is disposed on the movable locking member; a third cam disposed outside the first car door; as well as a third contactor provided at the first car door and displaced by being guided by the third cam, thereby displacing the car-side connecting member; When the first car door is in the fully closed position, the third contact is held by the third cam, whereby the car-side connecting member is held at the door stop side position, the second cam is held at the unlocked position, and the movable locking member is held at the locked position. When the car is in the door zone, if the first car door moves from the fully closed position to the opening direction, the car side connecting component abuts against the interlocking roller of the interlocking device provided on the landing door, the displacement of the car side connecting component to the door frame side position is prevented, and the second contact is guided by the second cam located in the unlocking position to displace the movable locking member to the unlocking position, and further movement of the first car door in the opening direction is allowed. When the car is outside the door area, if the first car door moves from the fully closed position to the opening direction, the car side connecting component shifts to the door frame side position, and the first contact is shifted by being guided by the first cam, thereby, the second cam shifts to the non-unlocking position, the movable locking part is maintained in the locked position, and further movement of the first car door in the opening direction is prevented.

10. The elevator car door device according to claim 9, wherein: The first cam, the first contact, and the second cam are mounted on a common mounting member.

11. The elevator car door device according to claim 9, wherein: The first cam has a first guide surface for guiding the first contact and is rotatable around a first cam rotation axis. The first guide surface is in an arc shape with the first cam rotation axis as the center. When the first car door is located at the fully closed position, the first contact comes into contact with the first guide surface.

12. The elevator car door device according to claim 10, wherein: The first cam has a first guide surface for guiding the first contact and is rotatable around a first cam rotation axis. The first guide surface is in an arc shape with the first cam rotation axis as the center. When the first car door is located at the fully closed position, the first contact comes into contact with the first guide surface.

13. The elevator car door device according to claim 11, wherein: The first cam has a second guide surface adjacent to the first guide surface. When the second cam is located at the unlocking position, the first contact comes into contact with the second guide surface. The second straight line is closer to the horizontal than the first straight line, the first straight line is a straight line perpendicular to the tangent line between the first guide surface and the first contact and passes through the contact point between the first guide surface and the first contact, and the second straight line is a straight line perpendicular to the tangent line between the second guide surface and the first contact and passes through the contact point between the second guide surface and the first contact.

14. The elevator car door device according to claim 12, wherein: The first cam has a second guide surface adjacent to the first guide surface. When the second cam is located at the unlocking position, the first contact comes into contact with the second guide surface. The second straight line is closer to the horizontal than the first straight line, the first straight line is a straight line perpendicular to the tangent line between the first guide surface and the first contact and passes through the contact point between the first guide surface and the first contact, and the second straight line is a straight line perpendicular to the tangent line between the second guide surface and the first contact and passes through the contact point between the second guide surface and the first contact.

15. The elevator car door device according to any one of claims 9 to 14, wherein: The car-side connecting member is provided on the first car door via a parallel link mechanism. The parallel linkage mechanism comprises a lower link and an upper link, The first cam is provided on either the lower link or the upper link. The third contact is provided on the other of the lower link and the upper link.

16. The elevator car door device according to claim 15, wherein: When viewed from directly above, the upper link overlaps the lower link. When viewed from the front, the second cam overlaps with the third cam when located at the unlocking position.

Images