JP2502689B2 - Elevator platform door structure - Google Patents

Description

TECHNICAL FIELD The present invention relates to a structure of an elevator hall door in an elevator apparatus installed in a general home.

[Related Art] In recent years, a home elevator has been proposed. In this domestic elevator, a door is provided at the opening of the elevator hall on each floor so that it can be opened and closed. This door needs to be as small as possible, so it has to be opened to the left and right,
Moreover, the left and right doors are divided into a main door and a sub-door, respectively, and the total number of doors is four, so that the door pocket is made smaller. The applicant of the present invention has already filed as Japanese Patent Application No. 62-146635 as a dodge for such an elevator landing.

[Problems to be Solved by the Invention] However, in the one disclosed in Japanese Utility Model Application No. 62-146635, when the door is opened, the main door is first moved, and then the main door is moved halfway and then the sub door is moved by the main door. When pushing the door to move the sub door together with the main door and storing it in the door pocket, and when closing the door, first move the main door in the closing direction, then move the main door part way and then move the sub door by the main door. I was pulling and moving the sub door along with the main door. In this way, when opening and closing the door, the main door first moves part way and then the main door and the sub door move in conjunction with each other. There was a problem that it was difficult to open and close smoothly because it was overloaded.

The present invention has been made in view of the above problems, and an object thereof is to operate one of the left and right main doors in a double door so that the other main door and the left and right sub doors can be opened. Opening and closing operations can be performed in conjunction with each other, and by opening and closing each sub door during the opening and closing operation of each main door, a certain load is applied from the beginning to the end so that opening and closing operations can be performed smoothly. Located in providing the door structure.

[Means for Solving the Problems] In the structure of the elevator hall door of the present invention, an opening 2 is provided on each floor to enter and exit from the car 1 that moves up and down, and an openable door 3 is provided in the opening 2. This door 3 is composed of four left and right main doors 3a and left and right sub doors 3b. The main door 3a and the sub doors 3b constituting the door 3 are respectively connected to the main door rail 13 or the sub door via the runner 15. A main door interlocking means A is provided so that it can be freely hanged on a rail 14 for traveling and that the other of the left and right main doors 3a is opened and closed in conjunction with the opening and closing operation of one of the left and right main doors 3a. , Sub-door interlocking means B for opening / closing each sub-door 3b during the opening / closing operation of each main door 3a in association with the opening / closing operation of each main door 3a is provided.
The pinion 21 protruding from the side of the sub door 3b is meshed with the fixed rack 22 fixed at the upper position between the sub door 3b and the movable rack 20 protruding from the side of the main door 3a with the pinion 21. To form a sub-door interlocking means B, and the moving speed of the sub-door 3b is set to 1/2 of the moving speed of the main door 3a.
By adopting such a configuration, the above-mentioned object of the present invention is achieved.

[Operation] In the present invention, the door pocket can be made smaller by configuring the door 3 with the left and right main doors 3a and the left and right sub doors 3b, and the left and right main doors 3a can be made smaller. Main door interlocking means A is provided to open or close one of the left and right main doors 3a in conjunction with opening or closing of one of the main doors 3a.
Opening / closing operation of each main door 3a linked with opening / closing operation of each sub door
By providing the sub door interlocking means B for opening and closing 3b and setting the moving speed of the sub door 3b to 1/2 of the moving speed of the main door 3a, a constant load is applied from the beginning to the end of the opening and closing operation, resulting in smooth operation. It is now possible to perform various opening and closing operations. In addition, when the main door 3a is manually opened or closed, the moving rack 20
Is mounted on the pinio 21 and moves, so that reliable interlocking is obtained and the runners 15 are prevented from coming off the main door rail 13 and the sub door rail 14.

EXAMPLES The present invention will be described below in detail with reference to examples shown in the accompanying drawings.
A car 1 is provided between a lower floor and an upper floor so as to be able to move up and down with a person or an object placed at an arbitrary position in a house. This basket 1
Elevating device (not shown) arranged below the floor below the basket 1
It is designed to move up and down. The car 1 is covered by a mantle 11. As shown in FIG. 1, an elevator elevating space 11a is provided in a part of a building as the mantle 11, and an elevator elevating space 11a is formed by arranging the car 1 vertically in the elevator elevating space 11a so as to be able to move up and down. The wall of the building may be the mantle 11, or another mantle 11 different from the wall of the building may be provided on the floor. Mantle
11 has an opening 2 on each floor. Opening 2
Door pockets 12 are provided on both sides of. A door 3 is disposed in the opening 2 so as to be freely opened and closed. The door 3 is a left-right double door, and is composed of four left and right main doors 3a and left and right sub doors 3b. 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 main door rail 13 are Figs. 4 and 6,
As shown in FIG. 8, an endless rotating belt 17 such as an endless belt or an endless chain is arranged, and the endless rotating belt 17 is wound around left and right pulleys 18. And one of the main doors 3a is connected to the upper part of the endless rotary belt 17 by a connecting fitting 19,
Further, the other main door 3a is connected to the lower end of the endless rotary belt 17 with the connecting fitting
Connected by. With such a configuration, 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 of them closes, the other also works. And then closes. Therefore, when the one main door 3a is moved by the endless rotary belt 17 and the connecting fitting 19, the other main door 3a is interlocked to form a main door interlocking means A. Further, the sub door 3b is adapted to interlock with the main door 3a. That is, as shown in FIG. 4, a moving rack is attached to the connecting fitting 19 of the main door 3a.
20 is fixed, and a pinion 21 is rotatably attached to the connecting fitting 19 of the sub door 3b. The pinion 21 is a fixed rack 22 (the fixed rack 22 does not move) and a movable rack 20.
It has been bitten with. When the main door 3a moves, the moving rack 20 and the pinion 21 mesh with each other,
The sub door 3b moves in conjunction with the main door 3a. Here, the radius of the pinion 21 is set so that the moving speed of the sub door 3b is 1/2 of the moving speed of the main door 3a. Thus, the interlocking metal fitting 19, the movable rack 20, the pinion 21, the fixed rack 22 and the like constitute the sub door interlocking means B. 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 first locking means 4 for locking the door 3 in the state where the door 3 closes the opening 2 is provided in addition to the handle-side locking device including the handle latch and the handle latch receiver. is there. The lock-in means for performing the lock-in operation of the first lock means 4 and the car 1
Is located in the opening 2 by the lock insertion means.
A lock releasing means 5 for releasing the lock-in operation of the lock means 4 is provided. That is, as shown in FIG.
The lock means 4 is provided at a position facing the other main door 3a of the left and right main doors 3a, which is a substantially middle portion in the vertical direction of one main door 3a. The first locking means 4 is constructed by rotatably supporting a rotary pawl 28 on a rotary shaft 29, and the rotary pawl 28 is pressed by a push fitting 31 pushed down by a spring material 30 such as a tension spring, The rotary claw 28 has a claw portion 32 at the tip of the rotary claw 28 projecting outward from the side end surface of one main door 3a 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. It is locked and locked. An operation rod 7 is provided inside the main door 3a so as to be vertically movable from an intermediate portion to an upper end. An upward pushing force is applied to the operating rod 7 by a spring 34, and a lower end of the operating rod 7 is contacted with an operating fitting 35, and 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 metal 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, the operating rod 7 is operated. The lower end of 7 pushes the operating fitting 35 against the spring 36,
Push the upper edge of the rotary pawl 28 with the lower end of the rotary pawl 28
The side 32 of the main door 3a is in a non-protruding state so that 32 is retracted and the lock is released. The upper end of the operating rod 7 protrudes upward from the upper end surface of the main door 3a, and a roller 37 is rotatably provided at the upper end of the operating rod 7. Around 37
Is elastically contacted with the lower surface of the upper rail 6 by the spring force of the spring 34 when the door is not fully closed. When the door 3 is fully closed, the roller 37 is inserted into the recess 8 provided in the upper rail 6. It has become. Here, as the upper rail 6, as in the embodiment shown in FIGS. 7 and 8, the main door rail 13 is used as it is.
Alternatively, the upper rail 6 may be provided separately from the main door rail 13. No. 5 in the recess 8
As shown in FIGS. 7, 7 and 8, a movable body 9 which is movable up and down and is pushed up in a state where the roller 37 at the upper end portion of the operating rod 7 is thrust into the recess 8 is arranged. A shaft 38 is provided on the moving body 9 so as to project upward.
The tip of 38 is inserted into a hole 40 provided in the upper surface of the upper frame 39 of the opening 2, and a lateral pin 41 is provided in a portion of the shaft 38 projecting upward from the hole 40. The moving body 9 is provided with a spring force to be pressed down by the spring 42, and when the moving body 9 is lowered, the horizontal pin 41 hits the edge of the hole 40 and is lowered only for a certain length. .
On both sides of the moving body 9, locking claw portions 43 projecting 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. Synthetic claw part 44
The locking claw portion 43 is locked and locked on the. The locking claw portion 43 and the engagement claw portion 44 serve as the second locking means 45. A bearing piece 46 is provided in the vicinity of the hole 40 on the upper surface of the upper frame 39 so as to project.
Is rotatably supported. 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. A spring 52 such as a compression spring is interposed between the collar 51 fixed to the lot 48 in the U-shaped portion 50 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. Upper frame 39
A support frame 54 is provided at the end of the upper surface of the support frame 54.
The electromagnetic clutch 55 is attached to the lever, and the shaft 61 attached to the coupling fitting 49 is engaged with the lever 61 fixed to the eccentric position and the electromagnetic clutch 55. An arm 58 is provided on the shaft 57 on the side of the electromagnetic clutch 55, 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. Move and operate piece 47
And the operating piece 47 pushes down the lateral pin 41 to push down the shaft 38, and the moving body 9 lowers to push down the roller 37 at the upper end of the operating rod 7 located in the recess 8. When 7 is pushed down, the lock is released as described above. Therefore, the unlocking operation section 60, the lot 48, the operating piece 47, etc. are the pushing-down means 10 for pushing down the moving body in a state where the car is positioned at the opening, and the operating 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, an opening is provided in the upper frame 39, and the operating portion 73 of the first limit switch 72 attached to the upper surface of the upper frame 39 extends below the opening, Door 3
In the fully closed state, the operating member 74 attached to the connection fitting 19 of the main door 3a operates the operating portion 73 to turn on the first limit switch 72 provided in the control circuit of the elevator. A second limit switch 75 is provided on the upper surface of the upper frame 39. When the moving body 9 is pushed upward, the operating portion 76 of the second limit switch 75 is operated by the horizontal pin 41.
Is pushed, the second limit switch 75 provided in the control circuit of the elevator is turned on, and when the moving body 9 is lowered, the pushing of the lateral pin 41 to the operating portion 76 is released and the second limit switch 75 is turned on. 2 Limit switch 75 is off. The elevator control circuit is shown in FIG. 12, and 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 78 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 has an opening 2 in the outer casing 11.
There is an entrance / exit opening 62 facing the. In addition, a guide rail 63 is provided which extends over the front part of the car 1 and both side parts of the car 1 and is provided with an entrance / exit opening 62.
The left and right doors 64 are attached to the car so that it can run freely. Here, the left and right doors 64 are configured by rotatably connecting a plurality of doors 65 each having a narrow width in the left-right direction, and project upward toward the upper surface of the door 64 as shown in FIG. The upper traveling section 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 of the lower guide rail 63 is attached to the lower guide rail 63 so as to be able to travel freely. 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. Either one of the left and right doors 64 is attached to the upper part of the door endless band 68 and the other one is attached to the lower part by the attachment metal fittings 70, respectively. By doing so, one of the left and right doors 64
When the opening / closing operation of the door 64 is performed, the other door 64 is also opened / closed in conjunction therewith. Here, when the left and right doors 64 are opened, they are pushed into the positions along the left and right side surfaces of the car 1 and stored. The door 64 is provided with a handle 71, and the handle 71 may be provided with an appropriate locking means.

FIG. 12 shows an elevator control circuit of the present invention, and FIG. 13 shows a flowchart showing the operation.

In FIG. 12, reference numeral 72 denotes left and right first limit switches,
Is the second limit switch, 90 is the push button switch for the destination of the elevator, R ₁ is the first relay, R ₁ a and R ₁ b are the normally open contacts of the first relay R ₁ , respectively, R ₂ is the second relay, R ₂ a and R ₂ b are normally open contacts of the second relay R ₂ , T is a timer, Ta is a normally closed contact of the timer T, R ₃ is a third relay, and R ₃ a and R ₃ b are each a third relay. R ₃ normally open contact, R ₄ 4th relay, R ₄ a 4th relay R ₄ normally open contact, M elevator motor circuit for raising and lowering elevator, 91 elevator car 1 corresponding to opening 2 It is a floor detection switch that detects that you are in a position. In the above circuit, the normally open contacts R ₁ a and R ₄ make the first relay R ₁
The self-holding circuit have been formed, so as to release and first excited relay R ₁ be a pressure on the push button switch 90 the push button switch 90 for destination after turning. In addition, the normally open contact R ₃ a and the second limit switch 75 connect the third relay R ₃
The self-holding circuit have been formed, the normally closed contact Ta of timer T is adapted to the excitation of the third relay R ₃ be turned off ends timer T operation. Here, the operating time of the timer T is slightly longer than the time required for the car 1 to move slightly 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 has been set for a long time.

Thus, 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 turned on, the first left and right limit switches 72 are turned on. In this case, when the first limit switch 72 is turned on and it is confirmed that the door 3 is closed, the destination push button switch 90 can be turned on. In this state, the destination push button switch 90 is turned on. press oN to the first relay R ₁ is excited by normally closed contacts R ₁ a, R ₁ b is turned on. In this case R ₄ a, since There has been turned on, the self-holding circuit is formed by R ₁ a, R ₁ b. Next, when the normally open contact R ₁ b is turned on, the second relay R ₂ is excited, the normally open contact R ₂ a is turned on, the timer T is operated, and the normally closed contact Ta is turned on by the operation of the timer T. the third relay R ₃ is excited has been normally open contacts R ₃ a is turned on, the hydraulic pump is rotated to lower the elevator when electric power is supplied to the motor circuit M of the elevator car 1 is raised Te, Matakago 1 Is lowered, the oil recovery valve opens, which causes the car 1 to move up and down.

At the same time, the car 1 moves and the unlocking operation section 60 comes off the roller 59 of the arm 58, and at the same time, the lot 48 moves and the moving body 9 is pushed upward by the operation rod 7 and engages with the locking claw section 43. The second locking means 45 is engaged with the claw portion 44 and
Is in a locked state, and when the operating rod 7 moves upward, the rotating claw 28 constituting the locking portion 4 is pressed and rotated by the pressing metal fitting 31 pressed down by the spring member 30, and the claw portion at the tip of the rotating claw 28 is rotated. 32 protrudes outward from the side end surface of one main door 3a, and is locked by a receiving bracket 33 provided at an intermediate portion in the vertical direction of the side end of the adjacent main door 3a to be in a locked state. Therefore, the lock part 4 is also locked. Further, in this state, the operating portion 76 of the second limit switch 75 is pushed by the lateral pin 41 provided on the shaft 38 of the moving body 9, and the second
The limit switch 75 is turned on. Here, if the second limit switch 75 is not turned on before the normally closed contact Ta of the timer T is turned off, the third relay R ₃
The normally open contact R ₃ a of the above is turned off, the power supply to the motor circuit M is stopped, and the elevator car 1 is stopped.
Therefore, while the car 1 is moving, the door 3 is closed (ie, the state where the door 3 is closed by the first limit switch 72 is detected) and the normally closed contact Ta of the timer T is closed.
If the lock unit 4 and the second lock means 45 are not in the locked state for some reason even if is in the off state, the car 1 stops to maintain safety. On the other hand, when the second limit switch 75 is 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 at the opening 2 of the destination floor and stops the car 1. You do it.

When the car 1 stops at the opening 2, the unlocking operation unit
The operation arm 58 is rotated by 60), and by rotating the operation arm 58, the lot 48 is moved in the direction of arrow C in FIG. 5, the operation piece 47 is rotated, and the operation piece 47 pushes down the lateral pin 41 to move the shaft. When the moving body 9 is pushed down, the roller 37 at the upper end of the operating rod 7 located in the recess 8 is pushed down, the operating rod 7 is pushed down, and the operating metal fitting 35 is pushed by lowering the operating rod 7 to operate. The lower end of the metal fitting 35 pushes the upper edge of the rotary claw 28 to retract the rotary claw 28 by retracting the rotary claw 28 from the side end surface of the main door 3a in a non-projecting state.
When the moving body 9 is pushed downward, the locking claw 43 and the engagement claw are formed.
The engagement with the lock 44 is released, and the lock of the second lock 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, to open the door 3, when the user grips the handle 25 and opens one main door 3a, the other main door 3a opens in conjunction with this, and the left and right sub doors 3b interlock with the main door 3a. Then, the left and right main doors 3a and the left and right sub doors 3b are stored in the left and right door pockets 12, respectively. By the way, when the main door 3a is opened in a state where the roller 37 at the upper end of the operating rod 7 is 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 7 Is held down to maintain the lock release by the lock unit 4. To get on the car 1 again and go to another destination floor, get on the car 1, fully close the door 3 of the opening 2, completely close the door 64 of the car 1 and press the destination push button 90 to perform the above-mentioned operation. Then, go up and down to the destination 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 the car 1 is located in the opening 2. In this state, the unlocking operation unit 60 pushes the roller 59 of the arm 58, so that the moving body 9 is pushed down, and therefore the operating rod 7 also moves.
The lock portion 4 and the second lock means 45 are both unlocked as a result, but the first limit switch 72 is opened when the door 3 is fully closed. Is on, and therefore 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. Then, the operation thereafter is the destination push button switch described above.
This is the same operation as after pressing 90.

Note that FIG. 9 shows a device for manually releasing the lock by the lock portion 4 and the second lock means 45. 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 actuating portion 95 is provided at 94. When the rotary knob 93 is rotated, the eccentric lever 94 is rotated, and the eccentric actuating portion 95 presses the contact portion 96 fixed to the operating rod 7 to push down the operating rod 7 to release the locked state of the lock portion 4. It is like this. When the operating rod 7 moves down, the moving body 9 moves down,
The lock of the lock means 45 is also released.

[Effects of the Invention] According to the present invention, as described above, the doors for opening and closing the opening are composed of the left and right main doors and the left and right sub doors, so that the doors are arranged on the left and right of the opening. The door pocket can be made smaller, which is effective for housing that does not have a large space, and the left and right main doors open and close in conjunction with the opening and closing operation of either the left or right main doors. The main door interlocking means that operates is provided, and the sub door interlocking means that opens and closes each sub door during the opening and closing operation of each main door is provided in conjunction with the opening and closing operation of each main door. Since the moving speed of the main door is 1/2, the main door and the sub door are opened and closed in conjunction with each other, even though the door is composed of the left and right main doors and the left and right sub doors. The load is constant from the beginning to the end of the opening / closing operation. The opening / closing operation can be smoothly performed, and particularly in the case of a domestic elevator in which the door is opened / closed by hand, the opening / closing operation by hand can be smoothly performed. In addition, a fixed rack fixed to an upper position between the main door and the sub-door, in which the main door and the sub-door that constitute the door are hangably supported by the main door rail or the sub-door rail via runners so that they can travel. Since the pinion protruding from the sub door side is meshed with the upper side, and the moving rack projecting from the main door side is meshed with the pinion to form the sub door interlocking means, the main door is manually opened and closed. When moving, the moving rack is mounted on the pinion and moves, so that reliable interlocking is obtained and the runners are prevented from coming off from the main door rail and the sub door rail.

[Brief description of drawings]

FIG. 1 is a schematic overall longitudinal sectional view of the present invention, FIG. 2 is a schematic horizontal overall sectional view of the same, and FIGS. 3 (a) and 3 (b) are schematic horizontal sectional views and schematic rear views of an opening part of the same. 4 is a longitudinal 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, FIG. 7 is an enlarged front sectional view of a second locking means of the same. FIG. 8 is a perspective view from the back of the above,
9 (a) and 9 (b) are front and side views of the lock portion,
FIG. 10 is a partially omitted cross-sectional view of the main rail and 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. 1 is a car, 2 is an opening, 3 is a door, 3a is a main door, 3b is a subdoor, A is a main door interlocking means, and B is an auxiliary door interlocking means.

Claims (1)

(57) [Claims] 1. An opening and closing door is provided on each floor to allow access from a car that moves up and down, and a door that can be opened and closed is provided at this opening. This door is composed of four left and right main doors and left and right sub doors. The main and sub doors that make up the door are hung and supported on the main door rail or the sub door rail via the runners so that they can travel freely, and the left and right are linked with the opening / closing operation of either the left or right main door. A main door interlocking means for opening or closing one of the other main doors, and sub-door interlocking means for opening and closing each subdoor during the opening and closing operation of each main door A pinion protruding from the sub door side is meshed with a fixed rack fixed at an upper position between the main door and the sub door, and a movable rack projecting from the main door side is meshed with the pinion on the fixed rack. A door interlocking mechanism is formed to control the moving speed of the sub door. Structure of the elevator hall doors, characterized by comprising a half the moving speed of the.