JPH079882Y2 - Elevator safety equipment - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a safety device for an elevator installed in a general home.

[Prior Art] In recent years, a domestic elevator has been proposed. In this household elevator, the doors at the openings on each floor are opened and closed by hand to get in and out. Then, a handle side latch is provided on the handle for opening and closing the door, and the handle side latch is locked or unlocked by operating the handle to lock the door. However, just by locking and unlocking the handle in this way, the handle is operated to operate the handle when the car is not located in the opening or when the car is moving up and down. May be opened accidentally,
There was a problem that it was dangerous.

Therefore, in order to solve such a problem, the present inventor has found that when the car is separated from the opening, the lock releasing means operates toward the non-locking side to lock the car, and when the car is located in the opening, the lock releasing means is operated. The locking means and the unlocking means that operate on the unlocking side to perform the unlocking have been considered.

[Problems to be solved by the invention] In the conventional example as described above, however, when the car is separated from the opening, the unlocking means operates toward the unlocking side, whereby the lock is achieved. However, even if the car is separated from the opening and the unlocking device is operated toward the unlocking side, the locking device may not be locked due to a failure or the like. In this case, since the door is not locked, it is possible to open the door at the opening by mistake while the car is being moved up and down, which is still not sufficient in terms of safety.

The present invention was devised in view of the above problems, and its purpose is to lock the car in a state where it is not located at the opening,
It is an object of the present invention to provide an elevator safety device capable of detecting the fact that the lock is not applied and performing an emergency stop of the car.

[Means for Solving the Problems] An elevator door safety device of the present invention is provided with an opening 2 on each floor that allows the car 1 to move up and down, and an opening / closing door 3 provided on the opening 2. A lock means A for locking the door 3 is provided, and the lock means A includes a first lock means 4 for locking the opposite end surfaces of the door 3 with the door 3 closed, and a door 3 with the door 3 closed. And a second lock means 45 for locking the upper end portions of the two doors together, and a first lock means 4 for locking the side end surface portions of the opposing doors 3 in the closed state of the door 3 is a side end of one door 3. And a receiving metal fitting 33 provided on the other door 3 which is locked when the door 3 is closed. The rotary nail 28 is locked to the receiving metal fitting 33 on the rotary nail 28. A spring that gives a rotational force in the direction Then, the rotating claw 28 is rotated in a direction opposite to the direction in which the rotating claw 28 is locked to the receiving fitting 33, and is lifted when the door 3 is fully closed to release the rotational force applied to the rotating claw 28. A movable body 9 provided with a rod 7 and raised by the operation rod 7 when the door 3 is fully closed.
Is provided with a spring for lowering the moving body 9 when the upward pushing of the moving body 9 by the operating rod 7 is released, and the locking claw portion 43 provided on the moving body 9 and the door 3 are provided. The door 3 which is locked with the locking claw portion 43 when the moving body 9 is raised in the closed state
The second locking means 45 is configured with the engaging claw portion 44 provided on the moving body 9 and pushes down the moving body 9 with the car 1 positioned at the opening and moves the car 1 away from the opening 2. In the state where the pushing-down means 10 for releasing the pushing-down of the moving body 9 is provided, it is turned on when the moving body 9 is raised and turned off when the moving body 9 is lowered and the car 1 is separated from the opening 2 and the pushing-down means 10 is operating on the non-depressing side. When the car 1 is turned on, the car 1 continues to move up and down, and when the car 1 is turned off, the car 1 is provided with a lock detection limit switch 75 for stopping the lifting motion. By adopting it, the above-mentioned object of the present invention is achieved.

[Operation] In the present invention, when the car 1 is normally separated from the opening 2, the depressing means 10 operates toward the non-depressing side and the moving body 9 is moved.
The moving body 9 rises and the locking means 4 is locked because the pushing force is released. However, the car 1 moves away from the opening 2 and the pushing means 10 moves toward the non-depressing side. Even when the pushing force to the body 9 is released, when the moving body 9 does not rise and the lock means 4 is not in the locked state, the raising and lowering of the car 1 is stopped to ensure safety. .

[Embodiment] The present invention will be described in detail below with reference to an embodiment shown in the accompanying drawings. A car 1 for raising and lowering a person or an object at an arbitrary position in a house is provided between the downstairs and the upstairs so as to be able to move up and down. The car 1 is vertically moved by an elevating device (not shown) arranged under the floor below the car 1. Basket 1 is a mantle
Covered by 11. As the jacket 11, as shown in FIG. 1, an elevator lifting space 11a is provided in a part of a building, and the elevator lifting space 11a is configured by vertically arranging the car 1 in the elevator lifting space 11a. The wall of the building may be the outer cover 11, or the outer cover 11 different from the wall of the building may be provided on the floor. Mantle 11
Has an opening 2 on each floor. Door pockets 12 are provided on both sides of the opening 2. A door 3 is arranged in the opening 2 so as to be openable and closable. In the embodiment shown in FIGS. 2 to 13, as the door 3, the left and right main doors 3a and the left and right sub doors 3b are used. Further, a main door rail 13 and a sub door rail 14 are provided from the opening 2 to the door pocket 12. The rail 13 for the main door and the rail 14 for the sub door are respectively provided on the upper and lower sides as shown in FIG. The main door rail 13 and the sub door rail 14 are arranged side by side in the front and rear. The left and right main doors 3a are movably attached to the main door rails 13, and the left and right sub doors 3b are movably attached to the sub door rails 14, respectively. As shown in FIG. 4, upper and lower runners 15 vertically opposed to each other are provided above the upper surfaces of the main door 3a and the sub door 3b. And the lower guides 16 projecting downward from the lower surfaces of the main door 3a and the sub door 3b are movably attached to the lower main door rail 13 and the sub door rail 14, respectively. There is. Above the rails 13 for the main doors, as shown in FIGS.
As shown in FIGS. 8A and 8B, an endless belt 17 such as an endless belt or an endless chain is arranged, and the endless belt 17 is wound around left and right pulleys 18. And this endless rotation belt 17
One of the main doors 3a is connected to the upper part by a connecting fitting 19, and the other main door 3a is connected to the lower part of the endless rotary belt 17 by the connecting fitting 19. By doing so, when the left and right main doors 3a respectively open one of them, the endless rotation belt 17 rotates to open the other, and when either one is closed, the other also closes. It is like this. The sub door 3b is adapted to interlock with the main door 3a.
That is, as shown in FIG. 4, the movable rack 20 is fixed to the connecting fitting 19 of the main door 3a, and the pinion is attached to the connecting fitting 19 of the sub door 3b.
21 is rotatably attached. And this pinion
Reference numeral 21 is engaged with the fixed rack 22 (the fixed rack 22 does not move) and the movable rack 20. When the main door 3a moves, since the moving rack 20 and the pinion 21 are meshed with each other, the sub door 3b moves in conjunction with the main door 3a, but the moving speed of the sub door 3b is the main speed. 1/2 of the moving speed of the door 3a
The radius of the pinion 21 is set so that Further, the main door 3a is provided with a handle 25, and the handle 25 is provided with a handle latch (not shown) and is engaged with a handle latch receiver (not shown) provided on the other main door 3a. When the handle 25 is rotated, the handle latch is disengaged from the handle latch receiver.

In the present invention, a locking means A for locking the door 3 in the state where the door 3 closes the opening 2 is provided in addition to the locking device on the handle side, which comprises the above-mentioned handle latch and the handle latch receiver.
The first locking means 4 is provided. Then, lock-in means for performing the lock-in operation of the first lock means 4, and lock-release means for releasing the lock-in operation of the first lock means 4 by the lock-in means in a state where the car 1 is positioned at the opening 2. And 5 are provided. That is, the ninth
As shown in the figure, the first locking means 4 is the other main door of the left and right main doors 3a, which is approximately the middle portion in the vertical direction of one main door 3a.
It is provided at a position facing 3a. The first locking means 4 is constructed by rotatably supporting a rotary claw 28 on a rotary shaft 29,
The rotary claw 28 is pressed by a pressing member 31 that is pushed down by a spring material 30 such as a tension spring, so that the claw portion 32 at the tip of the rotary claw 28 moves outward from the side end surface of one main door 3a. It is adapted to be locked by being locked to a receiving metal fitting 33 provided at an intermediate portion in the vertical direction of the side end portion of the adjacent main door 3a protruding. An operation rod 7 is installed in the main door 3a so as to be vertically movable from the middle portion to the upper end. Operating rod 7
An upward pushing force is applied by a spring 34, and a lower end of the operating rod 7 is in contact with an operating fitting 35. The operating fitting 35 is supported by a spring 36 such as a compression spring. When the operating rod 7 is pulled up, the operating fitting 35 is pulled up by the spring 36 and does not give an operating force for rotating the rotary claw 28, but when the operating rod 7 is lowered, it is operated. The lower end of the rod 7 resists the spring 36 and causes the operating fitting 35
Is pushed, the upper end of the rotary claw 28 is pushed by the lower end of the operation fitting 35, and the claw portion 32 is retracted from the side end surface of the main door 3a in a non-projecting state so that the lock is released. There is. The upper end of the operating rod 7 projects upward from the upper end surface of the main door 3a, and a roller 37 is rotatably provided on the upper end of the operating rod 7. The roller 37 is elastically contacted with the lower surface of the upper rail 6 by the spring force of the spring 34 when the door 3 is not fully closed.
When the door 3 is fully closed, the roller 37 can be inserted into the recess 8 provided in the upper rail 6. Where the upper rail 6
The rail 13 for the main door may be used as the upper rail 6 as it is as in the embodiment of FIGS. 7 and 8, or the rail 6 for the main door may be provided separately from the rail 13 for the main door. As shown in FIGS. 5, 7 and 8, the recess 8 is movable up and down, and the roller 37 at the upper end of the operating rod 7 is pushed up in the recess 8 while being pushed up. The body 9 is arranged. A shaft 38 is provided on the moving body 9 so as to project upward, and the tip of the shaft 38 is located at the upper frame 39 of the opening 2.
Through the hole 40 provided on the upper surface of the
A lateral pin 41 is provided at a portion projecting upward from.
The moving body 9 is provided with a spring force that is pushed down by the spring 42, and when the moving body 9 descends,
The lateral pin 41 abuts on the edge of the hole 40 so that the lateral pin 41 descends only a certain length. On both sides of the moving body 9, locking claw portions 43 protruding upward are provided. The connecting fitting 19 of the main door 3a is provided with an engaging claw portion 44 projecting downward, and is engaged when the door 3 is fully closed and the moving body 9 is pushed up by the roller 37 at the upper end of the operating rod 7. The locking claw 43 is locked by the locking claw 44 so as to be locked. The locking claw portion 43 and the engagement claw portion 44 serve as the second locking means 45 as the locking means A. That is, in the above embodiment, there are the first locking means 4 and the second locking means 45 as the locked A. Upper frame 39
A bearing piece 46 is provided in the vicinity of the hole 40 on the upper surface of the
An operating piece 47 is rotatably supported on the bearing piece 46.
One end of a lot 48 is rotatably supported on the operating piece 47, and the other end of the lot 48 penetrates a U-shaped portion 50 of a connecting fitting 49 as shown in FIGS. 5 and 6. Inserted, U-shaped part 50
Inside, a spring 52 such as a compression spring is interposed between a collar 51 fixed to the lot 48 and a piece of the U-shaped portion 50. Further, the lot 48 is given a spring force in the direction of arrow A in FIG. At the end of the upper surface of the upper frame 39, the support frame 54
An electromagnetic clutch 55 is attached to the support frame 54, and a lever 61 having a shaft 56 attached to the coupling fitting 49 fixed at an eccentric position and the electromagnetic clutch 55 are engageable with each other. An arm 58 is provided on a shaft 57 on the electromagnetic clutch 55 side, and a roller 59 is rotatably provided at the tip of the arm 58. Then, the roller 59 is rotated in the arrow B direction in FIG. 5 by the unlocking operation portion 60 provided in the car 1 with the car 1 positioned in the opening 2, and the lot 48 is moved in the arrow C direction in FIG. The operating piece 47 is moved to rotate, and the operating piece 47 pushes down the lateral pin 41 to push down the shaft 38, and the moving body 9 lowers, so that the roller 37 at the upper end of the operating rod 7 positioned in the recess 8 is moved. Is pushed down and the operating rod 7 is pushed down, whereby the lock is released as described above. Therefore, the unlocking operation section 60, the lot 48, the operating piece 47, etc. are the pressing means 10 for pressing down the moving body with the car positioned at the opening, and the operation rod 7, The upper rail 6, the recess 8, the moving body 9, and the pushing-down means 10 constitute the unlocking means 5.

As shown in FIGS. 7 and 8, the upper frame 39 is provided with an opening, and the operating portion 73 of the door close detection limit switch 72 attached to the upper surface of the upper frame 39 is connected below the opening. When the door 3 is fully closed, the operating member 74 attached to the connecting fitting 19 of the main door 3a operates the operating portion 73 to turn on the door close detection limit switch 72 provided in the elevator control circuit. It has become. Further, a lock detection limit switch 75 is provided on the upper surface of the upper frame 39, and when the moving body 9 is pushed upward, the lateral pin 41 pushes the operating portion 76 of the lock detection limit switch 75 to control the elevator. The lock detection limit switch 75 provided in the circuit is turned on. When the moving body 9 descends, the pressing of the lateral pin 41 to the operating portion 76 is released and the lock detection limit switch 75 is turned off. Has become. First
The control circuit of the elevator is shown in FIG. 12, but the specific configuration will be described later.

Further, a spring plate 78 attached to the upper surface of the upper frame 39 is led out to another opening of the upper frame 39, and when the main door 3a is fully closed, the spring plate 78 is rotatably provided on the connecting fitting 19 of the main door 3a. The stopper roller 77 rides over the spring plate 78, and the spring plate 76 is elastically contacted with the rear side of the stopper roller 77 to prevent it from returning due to a reaction when the main door 3a is closed.

As shown in FIG. 2, the car 1 is provided with an entrance / exit opening 62 facing the opening 2 of the jacket 11. Further, a guide rail 63 is provided which extends over the front part of the car 1 and both sides of the car 1 provided with an entrance / exit opening 62, and the left and right doors 64 are movably attached to the guide rail 63. Here, the left and right doors 64 are each configured by rotatably connecting a plurality of door bodies 65 each having a small width in the left-right direction, and as shown in FIG. The protruding upper traveling part 66 is attached to the upper guide rail 63 so that it can travel freely, and the door 64
A lower traveling portion 67 protruding downward from the lower surface portion of the is attached to the lower guide rail 63 so as to be freely movable. An endless belt 68 for a door such as an endless belt or an endless chain is arranged above the upper guide rail 63 along the upper guide rail 63. It is hung around the pulley 69 at the corner. One of the left and right doors 64 is attached to the upper part of the endless belt 68 for doors, and the other is attached to the lower part of the door endless belts 68 by attachment fittings 70, respectively. By doing this, one of the left and right doors 64 is
When the opening / closing operation of 64 is performed, the other door 64 is also opened / closed. Here, when the left and right doors 64 are opened, they are pushed and stored at positions along the left and right side surfaces of the car 1. A handle 71 is provided on the door 64, and a lock mechanism may be provided on the handle 71 as appropriate.

FIG. 12 shows an elevator control circuit according to the present invention, and FIG. 13 shows a flow chart showing the operation.

In FIG. 12, 72 is a left and right door closing detection limit switch, 75 is a lock detecting limit switch, 90 is a push button switch for the destination of the elevator, R ₁ is a door closing detection relay, R
_1a and R _1b are the normally open contacts of the door close detection relay R ₁ , R ₂
Is a lock detection relay, R _2a and R _2b are normally open contacts of lock detection relay R ₂ , T is a timer, Ta is a normally closed contact of timer T, R ₃ is a third relay, R _3a and R _3b are respectively 3 relay R ₃ normally open contact, R 4 is the 4th relay, R _4a is the 4th relay R ₄
Normally open contact, M is the motor circuit for lifting and lowering the elevator, 91
Is a floor detection switch for detecting that the elevator car 1 is in a position corresponding to the opening 2. In the above circuit, the normally open contacts R _1a and R ₄ form a self-holding circuit for the door close detection relay R ₁ , and the destination pushbutton switch 90
The door close detection relay R ₁ is excited even if the push button switch 90 is released after turning on. Further, the self-holding circuit of the third relay R ₃ is formed by the normally open contact R _3a and the lock detection limit switch 75, and even if the normally closed contact Ta of the timer T is turned off after the operation of the timer T ends, It is designed to excite relay R ₃ . here,
The operating time of the timer T is slightly longer than the time required for the car 1 to slightly move from the position corresponding to the opening 2 to move up and down and the unlocking operation part 60 to separate from the roller 59 of the arm 58. It is set.

Then, when the door 3 is closed while the car 1 is located at the position corresponding to the opening 2 and the floor detection switch 91 is on, the left and right door close detection limit switches 72 are turned on. In this case, when the door close detection limit switch 72 is turned on and it is confirmed that the door 3 is closed, the destination push button switch 90 is ready to be closed. In this state, the destination push button switch 90 When is pressed to turn on, the door close detection relay R ₁ is excited and the normally closed contact is made.
R _1a and R _1b are turned on. At this time, since R _4a is on, R _1a and R _1b form a self-holding circuit. Next, when the normally open contact R _1b is turned on, the lock detection relay R ₂ is excited, the normally open contact R _2a is turned on, the timer T operates, and the operation of the timer T turns on the normally closed contact Ta. 3 Relay R ₃ is excited, normally open contact R _3a is turned on,
When the elevator motor circuit M is energized and the car 1 rises, the hydraulic pump that raises and lowers the elevator rotates,
Further, when the car 1 moves down, the oil recovery valve is opened, which causes the car 1 to move up and down.

Then, the car 1 moves and the unlocking operation section 60 moves to the arm.
At the same time when the lot 48 moves out of the roller 59 of 58, the moving body 9 is pushed upward by the operating rod 7,
The second locking means 45 is locked by the engagement of the engaging claw portion 43 with the engaging claw portion 44, and the rotating claw 28 constituting the first locking means 4 is moved by the operation rod 7 moving upward, so that the spring material 30 is formed. It is rotated by being pressed by the push fitting 31 that is pushed down by
The claw portion 32 at the tip of the rotary claw 28 projects outward from the side end surface of the one main door 3a and is locked to the receiving metal fitting 33 provided in the vertical middle portion of the side end portion of the adjacent main door 3a. It will be locked.
Therefore, the first locking means 4 is also locked. Further, in this state, the actuating portion 76 of the lock detection limit switch 75 is pushed by the lateral pin 41 provided on the shaft 38 of the moving body 9, and the lock detection limit switch 75 is turned on. If the lock detection limit switch 75 does not turn on before the normally closed contact Ta of the timer T turns off, the normally open contact R _3a of the third relay R ₃ turns off and the motor circuit The electricity supply to M is stopped, and the elevator car 1 is stopped. Therefore, while the car 1 is moving, the door 3 is closed (that is, the door close detection limit switch 72 detects the door 3 closed state) and the normally closed contact Ta of the timer T is off. Even if there is any reason, if the first locking means 4 and the second locking means 45 are not locked for some reason, the car 1 is stopped and the safety is maintained. On the other hand, when the lock detection limit switch 75 is turned on, the car 1 moves up and down to the destination floor as it is, and the floor detection switch 91 detects that the car 1 is located in the opening 2 of the destination floor and stops the car 1. To do.

When the car 1 stops at the opening 2, the unlocking operation unit 60
The operation arm 58 is rotated by the operation arm 58, and the rotation of the operation arm 58 moves the lot 48 in the direction of arrow C in FIG.
By rotating 47 and pushing down the lateral pin 41 by the operating piece 47 and pushing down the shaft 38, the moving body 9 lowers to cause the recess 8
Push down the roller 37 at the upper end of the operating rod 7 located inside,
Push down the operating rod 7 and lower the operating rod 7
The upper edge of the rotary pawl 28 is pushed by the lower end of the operation fitting 35 by pushing the rotary pawl 28 so that the pawl portion 32 is retracted from the side end surface of the main door 3a in a non-protruding state to release the lock. Further, when the moving body 9 is pushed downward, the engagement between the locking claw portion 43 and the engagement claw portion 44 is released, and the lock of the second locking means 45 is released. In this state, the door 3 and the door 64 of the car 1 are opened to get off the car 1. Here, in order to open the door 3, when the handle 25 is grasped and one of the main doors 3a is opened, the other main door 3a is opened in conjunction with this, and the left and right sub doors 3b are further interlocked with the main door 3a. The left and right main doors 3a and the left and right sub doors 3b are housed in the left and right door pockets 12, respectively. By the way, when the main door 3a is opened with the roller 37 at the upper end portion of the operating rod 7 being pushed downward by the moving body 9, the roller 37 moves while being in elastic contact with the lower surface of the upper rail 6, and the operating rod is moved. The state in which 7 is pushed down is maintained and the unlocking by the first locking means 4 is maintained. To get on the car 1 again to go to another destination floor, get on the car 1, fully close the door 3 of the opening 2, fully close the door 64 of the car 1, and press the destination push button 90 to perform the above operation. It moves up and down to the target floor. in this case,
When the opening 2 is fully closed by the door 3, the roller 37 of the operating rod 7 which is elastically contacted with the lower surface of the upper rail 6 is inserted into the recess 8, but in the state where the car 1 is located in the opening 2. Since the unlocking operation unit 60 pushes the roller 59 of the arm 58, the moving body 9
Is pushed down, and therefore the operating rod 7 is also pushed down by the moving body 9,
As a result, the first locking means 4 and the second locking means 45 are both in the unlocked state, but the door 3 is in the fully closed state and the door close detection limit switch 72 is turned on. When the destination button of the elevator is pressed in this state, the electric circuit of the elevator is energized and the car 1 moves. The subsequent operation is the same as the operation after the destination push button switch 90 is pressed.

14 to 20 show another embodiment of the present invention. That is, in the above-described embodiment, the opening 2 is opened and closed by a total of four doors including the left and right main doors 3a and the left and right sub doors 3b. There is shown an embodiment in which 3 is opened and closed by three doors 3 of a main door 3a, a first sub door 3c and a second sub door 3d. In this embodiment, as shown in FIGS. 19 and 20, the moving body 9 is rotatably supported by a support plate 80 provided on the upper frame 39 by a shaft 81, and the moving body 9 is rotated. One end of the moving body 9 moves up and down. A locking claw portion 43 is provided at one end of the moving body 9, and the other end of the moving body 9 is rotatably supported by a lever 61, and an arm 58 is provided at a shaft 98 of the lever 61. Therefore, the arm 58 and the moving body 9 are linked with each other via the lever 61. In this embodiment as well, as in the embodiment shown in FIG. 6, the arm 58 and the moving body 9 may be interlocked via the electromagnetic clutch 55. When the moving body 9 is rotated upward, the support plate
The lock detection limit switch 75 attached to the lock detection limit switch 75
75 is turned on. Then, when the door 3 is fully closed, the roller 37 at the upper end portion of the operating rod 7 which is elastically contacted with the lower surface of the upper rail 6 is inserted into the recess 8 located at the end portion of the upper rail 6, and the recess 8 The one end of the moving body 9 located at the position is pushed up, the locking claw 43 is locked to the engaging claw 44, and the locking claw 43 and the engaging claw 44, which are the second locking means 45, are separated. It will be locked. Further, at this time, the operating rod 7 is raised so that the first locking means 4 is also locked. In this three-door door, the first locking means 4 is provided on the side end surface portion of the main door 3a, and the receiving metal fitting 33 is provided on the side frame of the opening 2. The specific structure is the same as that of the above-described four-door door. Since it is the same as the first locking means 4 and the receiving fitting 33, the illustration thereof is omitted. The operation of the lock detection limit switch 75, the operation of the unlocking operation unit 60 and the arm 58 provided in the car 1, and the unlocking operation of the first lock means 4 and the second first lock means 45 thereby are described above. Since it is the same as in the case of the four-door, detailed description is omitted.

Further, in the case of this three-door, the first sub door 3c moves in association with the main door 3a, and the second sub door 3d moves in association with the first sub door 3c. 17 and 18 show the relationship between the three doors. In FIG. 17 and FIG. 18, the three doors are the main door 3a, the first sub door 3c, and the second door.
The upper and lower runners 15 facing each other are provided on the connecting fittings 19 provided on the upper portion of the sub door 3d.
Rail 13 for main door and rail 14 for first sub door
Both the a and the second sub door rail 14b are fixed rails. The first moving rack 82 is fixed to the connecting fitting 19 on the upper part of the main door 3a, and the connecting fitting 19 on the upper part of the first sub door 3c.
A main pinion 83 and an auxiliary pinion 85 are provided on a shaft body 84 that is rotatably provided in the main pinion 83 and the first movable rack 82.
The sub-pinion 85 and the first fixed rack 86 fixed to the upper frame 39 are in mesh with each other. Also the first sub door 3c
The second moving rack 87 is fixed to the upper connecting fitting 19 of the above, and the second pinion 88 provided on the upper connecting fitting 19 of the second auxiliary door 3d meshes with the second moving rack 87. Further, the second pinion 88 meshes with a second fixed rack 89 fixed to the upper frame 39. Here, the first sub door 3c moves in conjunction with the main door 3a via the rack and pinion mechanism as described above, and the second sub door 3d moves in conjunction with the first sub door 3c. In this case, the rack and pinion mechanism is designed so that the moving speed ratio of the main door 3a, the first sub door 3c, and the second sub door 3d is 3: 2: 1. Therefore, when the main door 3a is moved to open the opening 2 while the three doors are fully closed, the main door 3a, the first sub door 3c, and the second door 3c are opened.
The sub door 3d moves to the door pocket 12 side at a moving speed of 3: 2: 1, and 3
A number of doors can be accommodated in the door pocket 12 at the same time. When the main door 3a is moved in the closing direction in the fully opened state,
The main door 3a, the first sub door 3c, and the second sub door 3d move at a moving speed of 3: 2: 1 to be in a fully closed state.

Incidentally, FIG. 9 shows the first locking means 4 and the second locking means.
A device for manually unlocking 45 is shown. That is, a rotary knob 93 is rotatably provided on the front upper part of the main door 3a, and an eccentric lever 94 fixed to the shaft of the rotary knob 93 is provided in the upper part of the main door 3a.
An eccentric working portion 95 is provided at 94. Then, when the rotary knob 93 is rotated, the eccentric lever 94 is rotated, and the contact portion 96 fixed to the operating rod 7 is pressed by the eccentric actuating portion 95 to push down the operating rod 7 to lock the first locking means 4. It is supposed to be released. When the operating rod 7 descends, the moving body 9 descends, and the lock of the second lock means 45 is released.

[Advantage of the Invention] According to the present invention, the locking means for locking the door includes the first locking means for locking the opposite end surface portions of the door when the door is closed, and the door for the door when the door is closed. A second locking means for locking the upper end portions to each other, and a first locking means for locking the side end surface portions of the facing doors in the closed state of the door
The locking means is a rotary claw provided at the side end of one of the doors,
This rotary claw is composed of a receiving metal fitting provided on the other door that is locked when the door is closed.The rotary nail is provided with a spring that applies a rotational force in the direction of locking the receiving metal, and An operation of lowering in the fully closed state to rotate the rotating claw in a direction opposite to the rotation in the locking direction of the rotating claw to the receiving fitting, and raising in the fully closed state of the door to release the rotational force to the rotating claw. A rod is provided, a moving body is provided that can be raised by the operating rod when the door is fully closed, and a spring is provided for lowering the moving body when the upward pushing of the operating rod by the operating rod is released. The locking claw provided on the door and the engaging claw provided on the door that locks with the locking claw when the moving body is lifted when the door is closed form second locking means, and the car has an opening. With the moving body pushed down and the car away from the opening, A push-down means for releasing the push-down of the moving body is provided, and it is turned on when the moving body is raised and turned off when the moving body is lowered, and is turned on when the car is separated from the opening and the push-down means is operating on the non-pressed side. Since the car continues to move up and down and is turned off, a lock detection limit switch is provided to stop the car from moving up and down. The moving body rises and is locked by operating to release the pushing force to the moving body, but the car moves away from the opening and the pushing means operates toward the non-depressing side to push down the moving body. Even if the force is released, if the moving body does not rise and the locking means is not in the locked state, the elevator of the car stops and it is possible to secure the safety. Is intended is no risk that sandwiched the car being raised and lowered accidentally open the door in a state of not being, in particular, in the present invention,
The lock means comprises first lock means for locking the opposite end surface portions of the door when the door is closed, and second lock means for locking the upper end portions of the door when the door is closed. First locking means for locking side end surface portions of opposite doors in a closed state with a rotary pawl provided at a side end portion of one door, and the rotary pawl is locked in a closed state of the door. It is composed of a receiving metal fitting provided on the other door, and a spring that gives a rotational force to the rotating pawl in a direction to engage the receiving metal fitting is provided, and the rotary pawl is lowered to the receiving metal fitting of the rotating pawl in a non-fully closed state. An operating rod is provided that rotates the rotating pawl in the opposite direction to the rotation in the locking direction and raises when the door is fully closed to release the above rotational force to the rotating pawl, and raises the operating rod when the door is fully closed. The movable body to be moved, and push the movable body upward with the operating rod. A spring is provided for lowering the moving body when the barb is released, and a locking claw provided on the moving body and a door that locks with the locking claw by raising the moving body when the door is closed. Since the second locking means is constituted by the provided engaging claw portion, the second locking means is constituted by the first locking means and the second locking means.
The heavy lock improves the safety, and the second lock means is not locked when the first lock means is unlocked. Therefore, the movable body can be pushed down when the second lock means is not working, for example, pushed down. Since the double lock is not working even if the means is not operating on the non-pushing side,
The lock detection limit switch is turned off to prevent the car from moving, which is also highly safe.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic vertical sectional view of the present invention, FIG. 2 is a schematic horizontal sectional view of the same as above, and FIGS. 3 (a) and 3 (b) are schematic horizontal views of an opening portion of the same. Sectional view and schematic rear view, FIG. 4 is a vertical sectional view of the same, FIG. 5 is a partially omitted front view of the same, FIG. 6 is a horizontal sectional view of the same, and FIG. 7 is a second locking means portion of the same. FIG. 8 is an enlarged front sectional view of FIG.
9 (a) and 9 (b) are a front view and a side view of the locking means,
FIG. 10 is a partially omitted cross-sectional view of the main rail and the sub-rail portion of the same, FIG. 11 is a schematic front view of the door of the same, FIG. 12 is a control circuit diagram of the same, and FIG. FIG. 14 is a partially omitted perspective view of another embodiment of the present invention, FIG. 15 is a front view of the opening portion of the above, FIG. 16 is a schematic horizontal sectional view of the above, and FIG. FIG. 18 is a vertical cross-sectional view of the same main rail, first sub rail, and second sub-rail, and FIG. 18 is a vertical cross-sectional view of the same. 1 is a schematic rear view of the same as above, where A is a locking means, 1 is a basket, 2 is an opening, 3 is a door, 5 is an unlocking means, 9 is a moving body, 10 is a pushing means, and 75 is a lock detection limit switch. Is.

Claims (1)

[Scope of utility model registration request] 1. An opening on each floor is provided to allow access from a car that moves up and down, a door that can be opened and closed is provided in the opening, lock means is provided to lock the door, and the lock means is provided in a state where the door is closed. A side of the door which is composed of first locking means for locking the opposite end surface portions of the door and second locking means for locking the upper end portions of the door when the door is closed, and which opposes when the door is closed. The first locking means for locking the end face portions is composed of a rotary claw provided at a side end of one door and a receiving metal fitting provided at the other door where the rotary claw is locked in a closed state of the door. The rotating claw is provided with a spring that applies a rotational force in the direction of locking the receiving metal fitting, and when the door is not fully closed, it descends and rotates in the opposite direction to the rotation of the rotating nail in the locking direction of the receiving metal fitting. Rotate the rotating pawl and raise it when the door is fully closed. An operating rod is provided for releasing the rotational force applied to the rolling claw, and a moving body is provided that can be raised by the operating rod when the door is fully closed. The moving body is provided when the upward pushing of the moving body by the operating rod is released. And a locking claw portion provided on the moving body and an engaging claw portion provided on the door that locks with the locking claw portion when the moving body rises when the door is closed. (2) Locking means is provided, and push-down means is provided for pushing down the moving body in a state where the car is positioned at the opening and releasing the pushing down of the moving body when the car is away from the opening, and is turned on when the moving body is raised. Is turned on when the car is moving down and is turned off while the car is separated from the opening and the pushing-down means is operating on the non-pushing-down side. Lock detection to stop the lifting operation Safety device for an elevator comprising providing a limit switch.