JP5285456B2 - Door device - Google Patents

Description

  The present invention relates to an elevator door device, and more particularly to a door device that enhances the hermetic performance of a four-door door that opens and closes an entrance / exit opening on a landing side.

  In general, in elevator door devices with two doors, the smoke-shielding door structure is known in which an airtight material is in close contact with the upper part of the door in a state where the door is closed in order to make the upper part of the single door open. (For example, refer to Patent Document 1).

  As a result, the airtight material prevents smoke generated at the time of a fire from entering the hoistway through the entrance / exit opening of the entrance / exit floor. However, in the single door, there is another problem that only one half of the opening / closing opening is opened, and the opening / closing opening becomes narrow.

  Therefore, in order to widen the entrance / exit opening, a total of 4 doors, the left front door and rear door, the right front door and rear door, are arranged, and the left front door and rear door have an entrance / exit opening. The left half of the left and right rear doors can be opened and closed, and the right and left front doors can be opened and closed by the right front door and the rear door. 2. Description of the Related Art Elevator door devices are generally known that are configured such that left and right rear doors overlap each other behind left and right front doors with four doors open.

  In this kind of four doors, the left and right rear doors and the left and right front doors are drawn back and forth, so the airtight material used in the door device of a conventional two door single door elevator cannot be used. Is.

JP 2005-335887 A

Therefore, in the course of reaching the present invention, the present inventors installed the upper cover 6 shown in FIG. 1A above the four doors 1 on the landing side, and the center of the rear portion 6a of the upper cover 6 is located on the left and right sides of the rear portion 6a. A central protrusion 7 is formed to protrude rearward X from both sides, and an airtight material 8 for the front door having elasticity inclined obliquely upward and rearward is provided on each of the left and right sides of the rear portion 6a of the upper cover 6, and the center of the upper cover 6 is provided. A rear door airtight member 9 having elasticity inclined obliquely upward and rearward X ₁ (FIG. 1B) is provided at the center of the rear portion 6a where the protruding portion 7 is formed, and the four doors 1 are closed (FIG. 2A In the state of (b), the left and right front door airtight members 8 are in elastic contact with each other over the entire length in the left and right direction M of the upper front surface 3b of the left and right front doors 3 and the upper front surface 2b of the left and right rear doors 2 are When the airtight material 9 for the rear door is elastically contacted over the entire length in the left-right direction M, while the four-door 1 is opened The ends of the left and right front door airtight members 8 are in elastic contact with the ends in the left-right direction M of the upper front surface 3b of the left and right front doors 3, respectively, and the upper front surfaces 2b of the left and right rear doors 2 are respectively airtight for the rear doors. We developed a smoke-proof door structure that is separated from the material 9 in the left-right direction M and is non-contact (state shown in FIG. 1A).

However, when closing the rear door 2 in the opened state, the upper corner portion 2c of the rear door 2 hits one end 9a of the rear door airtight material 9, and the rear door airtight material 9 that can be elastically deformed is turned upside down. There is a risk of letting you. In other words, there is a possibility that the tip end 9c side of the door for airtight material 9 after being inclined obliquely upward and rearward X ₁ is not in close contact with the top front 2b of the inverted and rear doors 2 downward as indicated by a broken line part of FIG. 13 . Further, the frequency of flipping up and down by repeating the opening and closing of the rear door 2 increases, and there is a problem that the life of the airtight material 9 for the rear door is shortened.

  The present invention has been invented in view of the above-mentioned conventional problems, and the problem is that when the rear door in the state where the elevator is open is closed, the corner portion of the rear door is used for the rear door. To provide a door device that can prevent the rear door air-tight material from flipping up and down by hitting one end in the left-right direction of the air-tight material, ensuring air-tight performance and extending the life of the air-tight material for rear doors. It is in.

In order to solve the above-described problems, the present invention has a total of four doors, that is, the left front door 3 and the rear door 2, and the right front door 3 and the rear door 2 at the entrance / exit opening 4 on the elevator floor. The left half of the entrance / exit opening 4 can be opened and closed freely by the left front door 3 and the rear door 2, and the right half of the entrance / exit opening 4 by the right front door 3 and the rear door 2. The end surfaces 2a of the left and right rear doors 2 are in contact with each other with the four doors 1 closed, and the left and right rear doors 2 are behind the left and right front doors 3 with the four doors 1 opened. In the door device stored so as to overlap each other, the elevator car side is defined as the rear X, the landing side is defined as the front Y, and the facing direction of the end surfaces 2a of the left and right rear doors 2 is defined as the outer side Z, respectively. The upper cover 6 is installed at the upper end of the portion 4, and the center of the rear portion 6a of the upper cover 6 protrudes rearward X from the left and right sides of the rear portion 6a. 7 is formed, provided with a door for airtight material 8 before having elasticity that is inclined upward and rearward X ₁ or obliquely downward and rearward obliquely respectively to the rear 6a left and right sides of the upper cover 6, a central protruding portion 7 of the upper cover 6 the rear 6a central door for airtight material 9 after having inclined elastic on the rear X ₁ or obliquely downward and rearward obliquely provided with, in the closed state of the four door 1, the left and right upper front 3b of the left and right front door 3 The left and right front door airtight members 8 are elastically contacted over the entire length in the direction M, and the rear door airtight material 9 is elastically contacted over the entire length of the upper front surface 2b of the left and right rear doors 2 in the left and right direction M. In the opened state, the ends of the left and right front door airtight members 8 are in elastic contact with the ends of the upper front surface 3b of the left and right front doors 3 in the left-right direction M, respectively, and the upper front surfaces 2b of the left and right rear doors 2 are Are separated from the airtight material 9 for the rear door in the left-right direction M and are not in contact with each other. It is configured. Furthermore, the recessed part 10 opened to the front Y and the outer side Z is formed in the corner part 2c which the upper front surface 2b of the said rear door 2 and the end surface 2a which the rear doors 2 oppose, and the rear door 2 in the open state is formed. In the middle of the movement in the closing direction Q, one end portion 9a in the left-right direction M of the inclined rear-door airtight material 9 is introduced into the recess 10 and raised in the inclined direction.

  With this configuration, when the rear door 2 is closed, one end 9a of the airtight material 9 for the rear door is introduced into the recess 10 provided in the corner portion 2c of the rear door 2, and the front Y and the outer side The recess 10 opened only in Z can prevent the rear door airtight material 9 from being inverted upside down in the direction opposite to the inclined direction. Accordingly, there is no possibility that the airtight performance of the airtight material 9 for the rear door is reduced, and the airtight material 9 for the rear door can be stably adhered to the upper front surface 2b of the rear door 2 even when the door is repeatedly opened and closed. It becomes like this.

  In addition, an inclined surface 11 that elastically deforms one end portion 9a of the airtight material 9 for the rear door in the inclination direction of the airtight material 9 for the rear door when the rear door 2 is closed is formed on the surface facing the outer side Z in the concave portion 10. In this case, one end 9a of the airtight material 9 for the rear door rides on the inclined surface 11 formed in the recess 10 so that the one end 9a of the airtight material 9 for the rear door can be smoothly formed. Moreover, it can be elastically deformed in the tilt direction without applying an excessive force.

  Further, the corner portion 12 between the inclined surface 11 in the recess 10 and the upper front surface 2b of the rear door 2 is chamfered, and the one end portion 9a of the airtight material 9 for the rear door is moved from the inclined surface 11 to the upper front surface 2b of the rear door 2. It is preferable to form a guide surface 12a that is guided toward the front side. In this case, one end portion 9a of the airtight material 9 for the rear door is slid and moved from the inclined surface 11 toward the upper front surface 2b of the rear door 2 with little frictional resistance. Thus, the service life of the airtight material 9 for the rear door can be extended.

  In addition, it is preferable to project a flange 14 that shields the gap 13 formed between the rear door airtight member 9 and the recess 10 from the outer edge of the recess 10 toward the front Y. The airtight performance between the concave portion 10 and the rear door airtight material 9 can be secured by the portion 14.

  The present invention raises the left and right end portions of the airtight material for the rear door tilted diagonally upward and rearward or diagonally downward and rearward in the inclined direction by the recesses provided in the corner portions of the rear door and opening forward and outward, respectively. By adopting the configuration, it is possible to improve the airtight performance and prolong the life by preventing the reverse of the airtight material for the rear door.

BRIEF DESCRIPTION OF THE DRAWINGS The door apparatus of the elevator provided with the 4 doors of one Embodiment of this invention is shown, (a) is a top view which shows the state in the middle of moving a 4 doors to a closing direction from a full open position, (b) is (a). It is side surface sectional drawing seen from the AA of (). (A) is a top view of the state which closed the four doors same as the above, (b) is side sectional drawing seen from the BB line of (a). It is a disassembled perspective view of the door device of the landing side same as the above. (A) is a perspective view of four doors same as the above, (b) is an enlarged perspective view of F section of (a). The guidance guide provided with the recessed part attached to the corner part of a rear door same as the above is shown, (a) is the perspective view seen from the front, (b) is the perspective view seen from the back, (c) is a top view, (d ) Is a front view seen from the front, (e) is a front view seen from the side, and (f) is a front view seen from the rear. The state which attached the guide guide same as the above to a rear door is shown, (a) is a top view, (b) is a side view, (c) is a front view seen from the front. It is explanatory drawing of the attachment state of the airtight material for rear doors same as the above. It is a perspective view of the hall side opening / closing mechanism same as the above. It is a front view which shows the state which the to-be-engaged part for interlocking | linkage of a landing side opening / closing mechanism same as the above exists in a closed position. It is a front view which shows the state which the to-be-engaged part for interlocking of the landing side opening / closing mechanism same as the above moved to the open position. It is a schematic block diagram of the landing side opening / closing mechanism same as the above. It is a schematic block diagram of a cage side opening / closing mechanism same as the above. It is a reference figure explaining the case where the front end side of the airtight material for rear doors is reversed to the opposite side to the inclined direction and the airtightness is impaired.

  Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings.

  1 shows a state in the middle of moving the four doors 1 on the elevator landing side from the opened state to the closing direction, FIG. 2 shows the closed state, and FIG. 3 shows the landing side opening and closing that constitutes the door device 5. 2 is an exploded perspective view showing a mechanism 20, an upper cover 6, left and right vertical frames 15, and a floor sill 16 that supports the lower end portion of the four doors 1 so as to be able to run. FIG.

  In the following, the elevator car (not shown) side is the rear X, the landing side (building side) is the front Y, and the facing direction of the end surfaces 2a of the left and right rear doors 2 (the same direction as the closing direction Q) is the outer side. This will be described as method Z.

  First, the landing side opening / closing mechanism 20 that opens and closes the four doors 1 on the entrance / exit opening 4 side of the boarding / exiting floor will be described.

  FIG. 8 is a perspective view of the landing-side opening / closing mechanism 20, FIG. 9 shows a state in which the interlocked engaged portions 21 and 112 are in the closed position, and FIG. 10 shows the interlocked engaged portions 21 and 112 in the open position. FIG. 11 is a diagram for explaining the operation of the landing-side opening / closing mechanism 20. The left side and the right side in FIG. 11 are directions viewed from the landing side.

  As shown in FIG. 11, in the middle of a rope 24 wound around a pair of left and right rotating pulleys 22, a car side opening / closing mechanism 30, which will be described later, is interlocked with the upper part (building side) of the entrance opening / closing opening 4. The interlocking block 90 including the interlocking engaged portions 21 and 112 with which the engaging portion 32 is detachably engaged is fixed, and the interlocking block 90 is opened in the engaged state with the interlocking engaging portion 32. It can move in the P or closing direction Q.

  Further, a pair of left and right fixed pulleys 23 are rotatably fixed to the upper part (building side) of the entrance / exit opening 4, and three fixing brackets 24 a, 24 b, 24 c are fixed to the building side between them. ing. A first moving pulley 26 movable on the first rail 25 is disposed between the fixed brackets 24b, 24c, and a second moving pulley 28 movable on the second rail 27 is disposed between the fixed brackets 24a, 24b. Has been. One end 51a side of the first wire 51 (wire portion shown by a solid line in FIG. 11) wound around the right fixed pulley 23 is wound around the first moving pulley 26 and fixed to the right fixed bracket 24c. The other end 51b side of the first wire 51 is wound around the second moving pulley 28 and fixed to the central fixing bracket 24b. One end 52a side of the second wire 52 (the wire portion shown by the broken line in FIG. 11) wound around the left fixed pulley 23 is wound around the first moving pulley 26 and fixed to the central fixing bracket 24b. The other end 52b side of the wire 52 is wound around the second moving pulley 28 and fixed to the left fixed bracket 24a.

  The door hanger 53a for hanging the right rear door 2 is fixed to the second wire 52 portion between the left fixed pulley 23 and the first moving pulley 26, and the door hanger 53b for hanging the right front door 3 is the first moving pulley. 26 is fixed. The door hanger 54a for hanging the left rear door 2 is fixed to the first wire 51 portion between the right fixed pulley 23 and the second moving pulley 28, and the door hanger 54b for hanging the left front door 3 is the second moving pulley. 28 is fixed. Further, the interlocking block 90 including the interlocking engaged portions 21 and 112 is connected to the door hanger 53 a of the right rear door 2.

  Next, FIG. 12 shows a schematic configuration diagram of a car-side opening / closing mechanism 30 that opens and closes the four doors 1A on the elevator car side. The configuration and operation of the car-side opening / closing mechanism 30 are basically the same as the configuration and operation of the landing-side opening / closing mechanism 20. The left side and the right side in FIG. 12 are directions viewed from the elevator car side.

  On the elevator car side, a drive rope 34 is wound around a pair of left and right drive pulleys 33 driven by a motor 31, and a drive block 80 having an interlocking engagement portion 32 extending in the vertical direction is fixed in the middle of the drive rope 34. The interlocking engagement portion 32 can be moved in the opening direction P or the closing direction Q by the motor 31.

  Further, a pair of left and right fixed pulleys 35 are rotatably fixed to the left and right sides of the upper part of the elevator car, and three right and left fixed brackets 36a, 36b, and 36c are fixed to the elevator car side therebetween. 12, 38 is a first moving pulley movable on the first rail 37, 40 is a second moving pulley movable on the second rail 39, and 41 is a first pulley wound around the right fixed pulley 35. A wire (wire portion shown by a broken line in FIG. 11), 42 is a second wire (wire portion shown by a solid line in FIG. 11) wound around the left fixed pulley 35, and 43a is a door hanger that suspends the right rear door 2A. 43b is a door hanger for hanging the right front door 3A, 44a is a door hanger for hanging the left rear door 2A, and 44b is a door hanger for hanging the left front door 3A. The door of the left rear door 2A A driving block 80 with an interlocking engagement portion 32 that is driven by the motor 31 is connected to the hanger 44a.

  When the elevator car stops at a predetermined boarding / alighting floor, the interlocking engagement portion 32 is moved in the opening direction P indicated by the solid line arrow in FIG. The door hanger 44a of the rear door 2A and the door hanger 44b of the left front door 3A fixed to the second moving pulley 40 move to the left side in a movement ratio of 2: 1 in synchronization with each other. The door 2A and the front door 3A are opened at a movement amount ratio of 2: 1. On the other hand, as the second moving pulley 40 moves to the left side, the door hanger 43a of the right rear door 2A and the door hanger 43b of the right front door 3A fixed to the first moving pulley 38 are synchronized and moved. By moving to the right side at a ratio of 2: 1, the right rear door 2A and the front door 3A are opened at a movement amount ratio of 2: 1, and in the final fully opened state, behind the left and right front doors 3A. The left and right rear doors 2A overlap each other.

  At the same time, the interlocking engagement portion 32 is inserted between the interlocked engaged portions 21 and 112 provided in the interlocking block 90 of the landing side opening / closing mechanism 20, and the interlocking engagement portions 32 are four pieces of elevator cars. Simultaneously with opening the door 1A, the interlocking engaged portion 21 is pushed in the opening direction P. When the interlocked engaged portion 21 is pushed in the opening direction P, the door hanger 53a of the right rear door 2 and the door hanger 53b of the right front door 3 fixed to the first moving pulley 26 shown in FIG. The rear door 2 and the front door 3 on the right side are opened at the movement amount ratio 2: 1 by moving to the left side in synchronization and at the movement amount ratio 2: 1. On the other hand, as the first moving pulley 26 moves to the right side, the door hanger 54a of the left rear door 2 and the door hanger 54b of the left front door 3 fixed to the second moving pulley 28 are synchronized and moved. By moving to the left side at a ratio of 2: 1, the left rear door 2 and the front door 3 are opened at a movement amount ratio of 2: 1, and in the final fully opened state, behind the left and right front doors 3 The left and right rear doors 2 overlap each other.

  Thereafter, when the four doors 1A on the elevator car side are closed, the interlocking engaging portion 32 moves in the closing direction Q in FIG. 11, and the right rear door 2A and the front door 3A have a movement amount ratio of 2: 1. At the same time, the left rear door 2A and the front door 3A are closed at a movement amount ratio of 2: 1.

  At the same time, the interlocking engaging portion 32 pushes the interlocking engaged portion 112 in the closing direction Q in FIG. 8 so that the right rear door 2 and the front door 3 are closed at a movement amount ratio of 2: 1. At the same time, the left rear door 2 and the front door 3 are closed at a movement amount ratio of 2: 1 (state shown in FIG. 2A).

  Next, the door lock mechanism of the landing side opening / closing mechanism 20 will be described.

  As shown in FIGS. 9 and 10, the interlock block 90 of this example is provided with an arm 100 that rotates about a shaft 102 and a lock lever 110 that rotates about a shaft 111.

  The arm 100 is spring-biased in the counterclockwise direction of FIG. 9 about a shaft 102 by a spring (not shown), for example, and an interlocking engaged portion 21 projects on one side of the shaft 102. A claw 101 is provided on the other side, and this claw 101 can be attached to and detached from a hook 103 fixed to a part different from the interlocking block 90.

  An interlocking engaged portion 112 is provided on one end side of the lock lever 110, and an abutting portion 113 that can be brought into and out of contact with a stopper 114 (FIG. 10) provided on the interlocking block 90 is provided on the other end side. It has been.

  When the four-door 1 is closed and the interlocking block 90 is in the closed position (FIG. 9), the claw 101 of the arm 100 is locked by the hook portion 103 and held in the closed position. When the interlocking engaged portion 21 of the interlocking block 90 is pushed in the opening direction P, the arm 100 rotates about the shaft 102 and the claw 101 comes out of the hooking portion 103, whereby the interlocking block 90 is shown in FIG. It can be moved to the open position. At this time, the contact portion 113 of the lock lever 110 hits the stopper 114 of the interlocking block 90, so that the lock lever 110 rotates about the shaft 111 and the interlocking engaged portion 112 moves to the position of FIG. Yes.

  Thereafter, when the four-door 1 is closed, the interlocking engagement portion 32 pushes the interlocking engaged portion 112 in the closing direction Q, so that the interlocking block 90 moves to the closed position shown in FIG. The four doors 1 are locked in the closed state by hooking and locking the claws 101 of the arm 100 to the hook portion 103.

  Next, the airtight structure of the four doors 1 on the landing side will be described.

  As shown in FIG. 3, a horizontally long plate-like upper cover 6 that covers the entire upper portion of the four-door 1 is disposed at the upper end of the entrance-exit opening 4 on the landing side, as shown in FIG. Has been. 92 in the figure is a curtain plate portion of the landing side opening / closing mechanism 20.

  The upper cover 6 extends horizontally in the width direction of the opening / exit opening 4, and a central protrusion 7 is formed at the center of the rear part 6 a that protrudes rearward X from the left and right sides of the rear part 6 a. In this example, as shown in FIG. 1A, the width dimension L1 of the central protrusion 7 of the upper cover 6 is set to be approximately equal to the width dimension of the two pieces of the rear door 2, and both left and right sides of the upper cover 6 are set. The width dimension L2 is set to be approximately equal to the width dimension of one front door 3.

As shown in FIG. 1 (b), a front door airtight member 8 having an inclination that is inclined obliquely upward and rearward is provided on the left and right sides of the rear portion 6 a of the upper cover 6. is is provided with a door for airtight material 9 after having elasticity that is inclined obliquely upward and rearward X _1. In the state where the four doors 1 are closed (the state shown in FIG. 2), the left and right front door airtight members 8 are in elastic contact with each other over the entire length in the left and right direction M of the upper front surface 3b of the left and right front doors 3 and The airtight material 9 for the rear door is elastically contacted over the entire length of the upper front surface 2b of the door 2 in the left-right direction M. When the four doors 1 are opened, the ends of the left and right front door airtight members 8 are in elastic contact with the ends of the upper front surface 3b of the left and right front doors 3 in the left-right direction M, respectively, and the left and right rear doors 2 Are separated from the rear door airtight material 9 in the left-right direction M and are not in contact with each other.

The airtight material 9 for the rear door and the airtight material 8 for the front door are made of an elastic material such as rubber or resin, for example. As shown in FIGS. 1B and 7, the rear door airtight material 9 (same for the front door airtight material 8) has a concave portion of the angle member 55 attached to the rising portion 6 b of the upper cover 6 on the base 9 b side. together are fitted into Tokoro 55a, protrusion 55b for rotation restriction provided on front and rear sides of the recess 55a, by 55c, an inclined posture in which the leading end 9c side of the rear door for airtight material 9 is directed obliquely upward and rearward X ₁ Is retained. 3 and 4, reference numeral 60 denotes an end surface airtight material that shields a gap between the end surfaces 2 a of the rear door 2.

  Here, in the left and right rear doors 2 of the present embodiment, the corner portion 2c formed by the upper front surface 2b of the rear door 2 and the end surface 2a facing each other shown in FIG. A guide guide 56 for preventing the material 9 from being turned upside down is attached.

  As shown in FIG. 5, the guide guide 56 of this example has a front piece 57 and a side piece 58 bent in an L shape, and is fitted into a cutout hole 59 cut into a rectangular shape in the corner portion 2 c of the rear door 2. The screw hole 57a of the front piece 57 is attached to the attachment hole 63 provided in the upper front surface 2b of the rear door 2 with the screw 61 and the nut 62 (FIG. 4). Here, as shown in FIG. 6 (c), the mounting hole 63 of the rear door 2 is formed in an elongated hole shape in the vertical direction so that the vertical position of the guide guide 56 can be varied, so that it can be changed at the construction site. Even when the mounting height of the rear door 2 is variable, the structure can cope with the deviation of the height.

  In the state where the guide guide 56 is attached to the cutout hole 59 of the rear door 2, the side piece 58 of the guide guide 56 does not protrude outward Z from the end surface 2a of the rear door 2, as shown in FIG. The piece 57 does not protrude forward Y from the upper front surface 2 b of the rear door 2, and only the flange portion 14 protrudes forward Y from the upper front surface 2 b of the rear door 2. As will be described later, the flange 14 functions to shield a gap 13 (FIG. 5E) generated between the airtight material 9 for the rear door and the recess 10.

  The side piece 58 of the guide 56 is formed with a recess 10 that opens to the front Y and the outer side Z, respectively. When the rear door 2 is moved in the closing direction Q, the recess 10 abuts against the one end 9a of the airtight material 9 for the rear door and raises the one end 9a in an inclined direction.

  In this example, as shown in FIG. 6, the lower end is connected to the end surface 2 a of the rear door 2 on the surface facing the outer side Z in the recess 10, and the upper end is recessed inside the rear door 2 from the end surface 2 a of the rear door 2. An inclined surface 11 that is smoothly inclined is formed. The inclined surface 11 functions to elastically deform the rear door airtight member 9 toward the inclination direction of the rear door airtight member 9 when the rear door 2 is closed.

  Further, a guide surface 12a is formed by chamfering a corner portion 12 between the inclined surface 11 in the recess 10 and the upper front surface 2b of the rear door 2. One end of the guide surface 12a is continuous with the inclined surface 11, the other end is continuous with the upper front surface 2b of the rear door 2, and one end portion 9a of the airtight material 9 for the rear door is connected to the inclined surface 11 from the inclined surface 11. It functions to guide toward the upper front surface 2b of the orthogonal rear door 2.

According to the above configuration, when the rear door 2 in the opened state is closed, the one end portion 9a of the airtight material 9 for the rear door is introduced into the concave portion 10 of the guide guide 56 attached to the corner portion 2c of the rear door 2. The The recess 10 is because it is open only to the front Y and outer side Z, the one end portion 9a of the door for airtight material 9 was inclined upward and rearward X ₁ is not be reversed downward, filed in the inclination direction It becomes a standing posture and comes out of the front Y of the recessed part 10 and can come into sliding contact with the upper front surface 2 b of the rear door 2. At this time, one end portion 9a of the airtight material 9 for the rear door rides on the inclined surface 11 from the arrow direction P in FIG. 5A, so that the front door Y moves forward as shown in FIGS. While being elastically deformed, it is guided by the guide surface 12a and moves to the upper front surface 2b of the rear door 2. Finally, as shown in FIG. It is in a state of elastic contact with the upper front surface 2b. Accordingly, the function of the guide guide 56 can reliably prevent the rear door airtight member 9 from being turned upside down, and the rear door airtight member 9 can be stably attached to the upper portion of the rear door 2 even when the rear door 2 is repeatedly opened and closed. As a result, the airtight performance of the rear door airtight material 9 can be maintained over a long period of time.

  Further, in this example, the end portion 9a of the rear door airtight member 9 is elastically deformed on the inclined surface 11 in the concave portion 10, and the rear door airtight member 9 is smoothly and impossiblely inclined in the inclined direction over the entire length. There is an advantage that it can be raised without applying force, and in this example, the guiding surface 12a is formed by chamfering the corner 12 between the inclined surface 11 in the recess 10 and the upper front surface 2b of the rear door 2. Therefore, one end 9a of the airtight material 9 for the rear door can be smoothly slid and moved from the inclined surface 11 toward the upper front surface 2b of the rear door 2 adjacent to the inclined surface 11, and as a result, The wear of the airtight material 9 for the rear door can be prevented, and the life can be extended.

  By the way, in the state where the rear door 2 is closed, a part in the left-right direction M of the airtight material 9 for the rear door faces the concave portion 10, so that a gap 13 is formed between the concave portion 10 and the airtight material 9 for the rear door (see FIG. 5 (e)) may cause smoke to leak. Therefore, the guide guide 56 of the present example has a structure that can shield the gap 13 by projecting the flange 14 from the upper edge of the recess 10 toward the front Y.

In the above embodiment, when the rear door for airtight material 9 is inclined obliquely upward and rearward X _1, and has described the case where the front door for airtight material 8 is inclined obliquely upward and rearward, both, obliquely downward In this case, the guide guide 56 having the concave portion 10 is turned upside down and attached to the corner portion 2c of the rear door 2 so that the rear door is hermetically sealed and airtight for the rear door. The material 9 can be elastically contacted with the upper front surface 2b of the rear door 2, and the airtight material 8 for the front door can be elastically contacted with the upper front surface 3b of the front door 3, respectively, and the recess 10 can provide the same upside-down prevention effect as the above embodiment. It is done.

DESCRIPTION OF SYMBOLS 1 Four doors 2 Rear door 2a End surface 2b Upper front surface 2c Corner part 3 Front door 4 Entrance / exit part 5 Door apparatus 6 Upper cover 6a Rear part 7 Center protrusion part 8 Airtight material for front doors 9 Airtight material for rear doors 9a One end part DESCRIPTION OF SYMBOLS 10 Concave part 11 Inclined surface 12 Corner | angular part 12a Guidance surface 13 Crevice 14 Gap part M Left-right direction P Open direction Q Closed direction X Back Y Front Z Outer side X ₁ Diagonal upper back

Claims (4)

A total of four doors, the left front door and rear door, the right front door and rear door, are arranged in the entrance entrance of the elevator boarding floor, and the left front door and rear door enter and exit. The left half of the left and right rear doors can be opened and closed, the right half of the opening / closing opening can be opened and closed with the right front door and the rear door, and the end surfaces of the left and right rear doors abut with the four doors closed, In a door device that is housed so that the left and right rear doors overlap each other behind the left and right front doors with the four doors open.
The elevator car side is defined as the rear, the landing side is defined as the front, and the direction in which the end surfaces of the left and right rear doors face each other is defined as the outer side. The rear part protrudes rearward from the left and right sides of the rear part to form a central protruding part, and the front cover is provided with an airtight material for the front door having elasticity inclined obliquely upward and backward or obliquely downward and rearward on the left and right sides of the upper cover. A rear door airtight material having elasticity inclined diagonally upward / backward or diagonally downward / backward is provided in the center of the rear portion where the central protrusion is formed, and in the state where the four doors are closed, The left and right front door airtight materials are elastically contacted over the entire length, and the left and right front door airtight materials are elastically contacted over the entire length of the upper front of the left and right rear doors. Left and right edges of the upper front of the door Each of the left and right front door airtight members is in elastic contact with each other, and the upper front surfaces of the left and right rear doors are separated from the rear door airtight material in the left-right direction and are not in contact with each other. For the rear door that is inclined in the middle of moving the rear door from the open state to the closing direction by forming a recess opening forward and outward at the corner part formed by the upper front surface of the door and the end face where the rear doors face each other A door device characterized in that one end of the airtight member in the left-right direction is introduced into the recess and is raised in the inclined direction. The inclined surface that elastically deforms one end of the airtight material for the rear door in the inclination direction of the airtight material for the rear door when the rear door is closed is formed on the surface facing the outside in the recess. The door device according to 1. A guide surface that chamfers an edge formed by the inclined surface in the concave portion and the upper front surface of the rear door adjacent thereto, and guides one end portion of the airtight material for the rear door from the inclined surface toward the upper front surface of the rear door. The door device according to claim 2, wherein the door device is formed. The flange part which shields the clearance gap which arises between the said airtight material for said rear doors and a recessed part is protruded toward the front from the outer edge part of the said recessed part, The Claim 1 thru | or 3 characterized by the above-mentioned. The door device described.

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