JP2012144321A - Door device for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To maintain excellent smoke insulation by an airtight member for a back door over a long period of time while reducing the contact resistance between the back door and the airtight member for the back door.SOLUTION: In a door device for an elevator, the airtight member 9 for the back door for occluding the clearance between an upper surface of the back door 2 and an upper frame includes a first elastic body 9A of a long fin shape having elasticity that extends over the full width of the upper surface 2b of the back door 2 and is inclined to a direction that it is pressed against the upper surface 2b of the back door 2 more as it advances to the leading end, and a second elastic body 30 that always provides the elastic force to one end 9a in a horizontal direction of the first elastic body 9A that faces a corner 2c on a door end side of the back door 2 when the door is fully closed, toward the inclination direction of the first elastic body 9A.

Description

  The present invention relates to an elevator door device, and more particularly to an elevator door device provided with an airtight member for closing a gap between an upper frame portion of an entrance / exit frame surrounding a hall entrance and an upper portion of the door.

  A total of four doors, a left front door and rear door, and a right front door and rear door, are arranged as the sliding doors arranged on the landing side that opens and closes the elevator doorway. The left half of the landing doorway can be opened and closed freely with the left front door and the rear door, and the right half of the landing doorway can be opened and closed with the right front door and the rear door. The door structure is generally configured so that the left and right rear doors are in contact with each other with the four doors closed, and the left and right rear doors overlap behind the left and right front doors with the four doors open. Is.

  Moreover, the elevator which has a smoke-shielding function has ensured the smoke-shielding effect by closing a clearance gap using an airtight member about four directions surrounding a door.

  Conventionally, Patent Literatures 1 and 2 below are known as smoke shielding door structures in which a space between an upper frame portion of an entrance / exit frame that surrounds a hall entrance and an upper portion of a door is hermetically sealed by an airtight member.

  Patent Document 1 discloses an entrance / exit frame composed of an upper frame and a vertical frame provided at an entrance / exit, a landing door disposed with a gap in the entrance / exit frame, an airtight member provided at the upper frame, and an airtight member. It is a smoke shielding apparatus comprised with the cross-section L-type smoke-shielding member which has the perpendicular | vertical part which shields and smokes.

  In Patent Document 2, an upper frame portion is installed on the upper side of the four doors on the landing side, the rear center of the upper frame portion protrudes rearward to form a central protruding portion, and the upper frame portion is inclined obliquely on both the left and right sides of the rear portion. A fin-like airtight member for the front door having elasticity inclined upward and backward is provided. A fin-shaped airtight member for a rear door having elasticity inclined obliquely upward and rearward is provided in the center of the rear portion where the central projecting portion of the upper frame portion is formed. A guide guide having a recess opening forward and outward is attached to a corner portion on the door-end side of the rear door, and the left-right direction of the inclined airtight member for the rear door is inclined while moving the rear door from the open state to the closing direction. It is the smoke-shielding structure comprised so that the one end part of this may be introduce | transduced into a recessed part and it raises in the inclination direction. In this structure, the contact resistance between the door and the rear door airtight member can be reduced by forming the rear door airtight member in an elastic fin shape. Further, by attaching a guiding guide to the end of the door, as shown in FIG. 7, when the rear door 2 is closed, the front end 9c of the airtight member 9 for the rear door that can be elastically deformed is attached to the front end side of the rear door 2. As shown by the arrow P in FIG. 7, the tip 9c portion can be prevented from flipping downward as it hits the corner portion.

JP 2005-335887 A JP 2010-173767 A

  However, in the conventional example shown in Patent Document 1, the vertical portion of the L-shaped smoke shielding member attached to the landing door when the door is opened and closed is a thick-walled elastic body made of an elastic material such as rubber. Therefore, there is a problem that the contact resistance between the landing door and the elastic body is large, and it is difficult to ensure a smooth opening / closing operation of the landing door.

  On the other hand, in Patent Document 2, a load is applied to the end portion of the elastic fin piece constituting the airtight member for the rear door each time the rear door is opened and closed, and the elasticity is weakened, which is indicated by an arrow Q in FIG. There exists a problem that it deform | transforms into a direction and it becomes easy to leave | separate from the upper surface part 2b of the rear door 2, and it becomes easy to reduce smoke shielding property.

  The present invention has been made in view of the above circumstances, and the object of the present invention is to provide a good smoke barrier by the airtight member for the rear door while reducing the contact resistance between the rear door and the airtight member for the rear door. Is to provide a door device for an elevator that can be maintained over a long period of time.

  In order to solve the above problems, the present invention opens and closes a landing doorway that leads from a landing of an elevator to a hoistway with a sliding door having a front door and a rear door that open and close in the left-right direction, and the landing doorway A front door airtight member for airtightly closing the gap between the upper surface of the front door and the upper frame portion is attached to one side of the upper frame portion of the enclosing entrance / exit frame, and the rear side is located at the center side of the upper frame portion. A central projecting portion projecting toward the center, and an airtight member for a rear door for airtightly closing a gap between the upper surface portion of the rear door and the upper frame portion is attached to the central projecting portion, and the rear door is opened when the door is fully opened. Moves away from one end in the left-right direction of the airtight member for the rear door and moves to a position overlapping the back of the front door, and when the door is fully closed, the rear door is moved from one end in the left-right direction of the airtight member for the rear door. By moving to the other end side, the space between the upper frame and the upper surface of each door An elevator door device having a smoke-proof structure with a door air-tight member and a rear door air-tight member, wherein the rear door air-tight member extends over the entire width of the upper surface of the rear door and reaches the front end. A long fin-like first elastic body having elasticity inclined toward the direction pressed against the upper surface portion of the rear door, and the first elasticity facing the door-end corner portion of the rear door when the door is fully closed. One end of the body in the left-right direction is provided with a second elastic body that constantly applies an elastic force toward the inclination direction of the first elastic body. The upper frame portion includes a fixing portion that fixes the base portion of the first elastic body and holds the first elastic body in the inclined direction, and a wall portion that is erected from behind the fixing portion. Preferably, the second elastic body is disposed between the back surface of the one end portion of the first elastic body and the wall portion.

  In addition, it is preferable that the second elastic body is formed of an elastic block material separate from the first elastic body.

  The door device for an elevator according to the present invention can maintain good smoke shielding properties by the airtight member for the rear door over a long period of time while reducing the contact resistance between the rear door and the airtight member for the rear door.

It is a perspective view explaining the airtight member for rear doors of one embodiment of the present invention. It is a disassembled perspective view of the whole door apparatus of the elevator provided with the airtight member for rear doors same as the above. It is a perspective view explaining the state which attached the airtight member for rear doors and the airtight member for front doors to the upper frame part of the hall entrance / exit of the elevator same as the above. It is a side view explaining the attachment state of the airtight member for rear doors same as the above. (A) is a plan view showing a state in the middle of moving the four doors on the elevator landing side of the elevator from the fully open position to the closing direction, and (b) is a side cross-sectional view taken along the line AA of (a). FIG. (A) is a top view of the state which closed the 4 doors same as the above, (b) is side sectional drawing seen from the BB line of (a). It is a reference figure explaining the case where the front-end | tip side of the airtight member for rear doors same as the above is reversed or deform | transformed to the opposite side to the inclination direction, and the smoke shielding property is impaired.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  As shown in FIG. 2, the door device for opening and closing the hall entrance / exit 4 of the elevator according to the present embodiment is composed of an upright four-door 1. In the following, the hoistway (elevator car) side is defined as Y, the landing side is defined as X, the rear door located on the hoistway side Y of the left and right two doors is the rear door 2, and the front door located on the landing side X Is defined as the front door 3 and the door opening / closing direction is defined as the left-right direction M.

  The upper end 1a of each door 1 is driven to open and close by a door opening / closing mechanism 20 installed on the landing ceiling surface side. When the door is fully closed, the door front surfaces of the left and right rear doors 2 are in contact with each other via the end face airtight member 60, and when the door is fully opened, the left and right rear doors 2 overlap behind the left and right front doors 3, respectively. is there. The door opening / closing mechanism 20 closes the right rear door 2 and the front door 3 at a movement ratio of 2: 1 and simultaneously closes the left rear door 2 and the front door 3 when closing the four-door 1. It is closed at a movement amount ratio of 2: 1. The door opening / closing mechanism 20 is known in Japanese Patent Laid-Open No. 2010-173767 already disclosed by the present applicant, and detailed description thereof is omitted. In FIG. 2, 16 is a sill installed on the floor, 15 is a left and right vertical frame, and 90 is a curtain plate portion of the door opening / closing mechanism 20.

  In addition to the door opening / closing mechanism 20, a horizontally long plate-like upper frame portion 6 that covers the entire upper portion of the four-door 1 is disposed at the upper end portion of the landing entrance 4.

  The upper frame portion 6 extends horizontally along the width direction of the landing doorway 4, and a central projecting portion 7 is formed at the center of the rear portion so as to project rearward (the hoistway side Y) from the rear both sides 6 a. In this example, as shown in FIG. 5A, the width dimension L1 of the central protrusion 7 of the upper frame part 6 is set to be approximately equal to the width dimension of the two rear doors 2. The width dimension L2 on both the left and right sides of the upper frame portion 6 is set to be approximately equal to the width dimension of one front door 3 respectively.

  As shown in FIG. 5 (b), a front door airtight member 8 having elasticity inclined obliquely upward and rearward W is provided on the rear side both sides 6 a of the upper frame portion 6. The protrusion 7 is provided with a rear door airtight member 9 having elasticity inclined obliquely upward and rearward W. In the state where the four doors 1 are closed (the state shown in FIG. 6), 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 surface portion 3b of the left and right front doors 3. Further, the rear door airtight member 9 is elastically contacted over the entire length of the upper surface portion 2b of the left and right rear doors 2 in the left-right direction M. In the state where the four doors 1 are opened (the state shown in FIG. 5), the end portions of the left and right front door airtight members 8 are in elastic contact with the end portions in the left and right direction M of the upper surface portion 3b of the left and right front doors 3, respectively. Furthermore, the upper surface portions 2b of the left and right rear doors 2 are separated from the rear door airtight member 9 in the left-right direction M and are not in contact with each other.

  The rear door airtight member 9 and the front door airtight member 8 are both made of an elastic material such as rubber or resin.

  In this example, the rear door airtight member 9 (the same applies to the front door airtight member 8) is composed of a first elastic body 9A and a second elastic body 30, as shown in FIG. 9 A of 1st elastic bodies are the long fin pieces which have the elasticity inclined toward the direction (in this example hoistway side Y) pressed against the upper surface part 2b (FIG.5 (b)) of the rear door 2, so that it goes to the front-end | tip. It is formed in a shape. As shown in FIG. 4, the first elastic body 9 </ b> A of the present example is formed along the inner corner portion of the angle member 55 (wall portion) in which the root portion 9 b is fixed to the rising portion 80 of the upper frame portion 6 with a screw 70. And is fitted into a recessed groove-shaped fixing portion 55a. 9 A of 1st elastic bodies are hold | maintained in the inclination attitude | position which the front-end | tip 9c side of the airtight member 9 for rear doors goes diagonally up and back W by the convex part 55b, 55c for rotation control provided in the front and back both sides of the fixing | fixed part 55a. It is desirable that the outer surface of the first elastic body 9A be coated with a resin excellent in slipperiness. Examples of the coating material include urethane resin and silicon resin.

  As shown in FIG. 1, the second elastic body 30 is provided on the back side of the tip 9c portion of the first elastic body 9A on the one end 9a side. The second elastic body 30 always applies an elastic force toward the tip end 9c portion of the first elastic body 9A in the inclination direction W. In this example, the sponge has an inverted triangle shape when viewed from the side. The elastic block material 30A is made of. The elastic block member 30A is inserted into a space between the back surface of the one end portion 9a of the first elastic body 9A and the angle member 55 (wall portion), and is fixed and integrated with an adhesive or the like.

  The elastic block member 30A has six locations shown in FIG. 3, that is, two ends E1, E2 of the rear door airtight member 9, two ends E3, E4 of the right front door airtight member 8, and the left side It is provided at each of the two ends E5 and E6 of the airtight member 8 for the front door.

  Thus, when the rear door 2 is closed, the door side corner portion 2c (see FIG. 5) of the rear door 2 hits the tip 9c of the one end 9a, and the tip 9c is elastically deformed along the upper surface 2b of the rear door 2. By doing so, the first elastic body 9A is air-tightly elastically contacted over the entire width of the upper surface portion 2b of the rear door 2 to form a smoke shielding structure. At this time, since the first elastic body 9A elastically contacting the rear door 2 is formed in a long elastic fin shape, the contact resistance between the rear door 2 and the rear door airtight member 9 can be reduced. Smooth opening and closing is possible. In addition, since the tip end 9c side of the one end portion 9a of the first elastic body 9A is reinforced by the second elastic body 30, when the door end side corner portion 2c of the rear door 2 hits the tip end 9c of the one end portion 9a. There is no possibility that the one end portion 9a is reversed in the direction indicated by the arrow P in FIG. Moreover, even when the door is repeatedly opened and closed, the elasticity of the tip 9c of the first elastic body 9A is not easily lowered, and the first elastic body 9A is not deformed in the direction indicated by the arrow Q in FIG. As a result, the smoke shielding property of the airtight member 9 for the rear door can be satisfactorily maintained over a long period.

  Moreover, since the 2nd elastic body 30 is hold | maintained between 9 A of 1st elastic bodies, and the upper frame part 6 which fixes this, the 2nd elastic body 30 is attached to the 1st elastic bodies 9A and the upper frame part 6. It can be stored and held easily by using it.

  In addition, since the second elastic body 30 is composed of an elastic block member 30A made of sponge separate from the first elastic body 9A, it is not necessary to change the design of the existing elastic fin-shaped first elastic body 9A. The existing first elastic body 9A can be used as it is. Moreover, since the sponge elastic block member 30A is relatively low in cost, it is possible to improve the smoke shielding property of the rear door airtight member 9 without cost.

  Note that the two places E3 and E6 (FIG. 3) of the airtight member 8 for the front door are always in contact with the front door 3, and the rear door 2 is in contact with and separated from the two places E1 and E2 of the airtight member 9 for the rear door. Although not, the second elastic body 30 (see FIGS. 5B and 6B) is also provided at the four locations E3 to E6 of the front door airtight member 8, in particular, the front door airtight. The deformation of the member 8 in the direction indicated by the arrow Q in FIG. 7 can be prevented, and this is effective in improving the smoke shielding property of the airtight member 8 for the front door.

  In the above-described embodiment, the case where the second elastic body 30 is constituted by the elastic block member 30A separate from the first elastic body 9A and bonded is described. However, the second elastic body 30 is formed using the same elastic material such as rubber. And the first elastic body 9A may be integrally formed. In this case, the number of parts can be reduced and the construction can be saved.

DESCRIPTION OF SYMBOLS 1 Door 2 Rear door 2b Upper surface part 2c Door tip side corner part 3 Front door 4 Entrance doorway 6 Upper frame part 7 Center protrusion part 8 Airtight member for front doors 9 Airtight member for rear doors 9A 1st elastic body 9a One end part 9b Root Part 30 Second elastic body 30A Elastic block material 55 Wall part (angle material)
55a Fixed part 55b Wall part M Left-right direction W Inclination direction X Landing side Y Hoistway side

Claims (3)

  The landing doorway leading from the elevator hall to the hoistway is opened and closed with a sliding door having a front door and a rear door that opens and closes in the left-right direction, and the front frame on one side of the upper frame portion of the doorway frame surrounding the hall doorway A front door airtight member for sealing the gap between the upper surface portion of the door and the upper frame portion is attached, and a central protrusion that protrudes rearward is provided on the center side of the upper frame portion. A rear door airtight member for airtightly closing a gap between the upper surface portion of the rear door and the upper frame portion is attached to a portion, and when the door is fully opened, the rear door is one end in the left-right direction of the rear door airtight member The upper frame portion is moved to a position overlapping with the rear of the front door, and the rear door moves from one end in the left-right direction to the other end when the door is fully closed. Between the front door airtight member and the rear door airtight member. In the elevator door device having a smoke structure, the airtight member for the rear door extends over the entire width of the upper surface portion of the rear door and is pushed toward the upper surface portion of the rear door toward the tip. An elongated fin-shaped first elastic body having slanted elasticity, and the first elastic body on one end side in the left-right direction of the first elastic body facing the door-end corner portion of the rear door when the door is fully closed. An elevator door device comprising: a second elastic body that constantly applies an elastic force toward the tilt direction. The upper frame portion includes a fixing portion that fixes the base portion of the first elastic body and holds the first elastic body in the inclined direction, and a wall portion that is erected from behind the fixing portion. 2. The elevator door device according to claim 1, wherein the second elastic body is disposed between a back surface of one end portion of the first elastic body and the wall portion. 3. The elevator door device according to claim 1, wherein the second elastic body is formed of an elastic block member separate from the first elastic body.

Images