JP5836228B2 - Elevator door device - Google Patents

Description

  The present invention relates to an elevator door device.

  A door of a single opening type or a double opening type is provided at an entrance of the elevator. The upper end side of the door is suspended from a rail disposed on the upper side of the entrance through a hanger roller. The lower end side of the door is provided with a leg portion that engages with a groove formed in the sill. As a result, the door moves in the left-right direction while being guided at the top and bottom thereof to open and close the doorway.

  However, in the structure in which the groove is formed in the sill, there is a possibility that the user goes into the groove or foreign matter such as dust accumulates in the groove and hinders smooth opening and closing. In view of this, a technique has been proposed in which the lower side of the door can be guided without forming a groove on the upper surface of the sill (Patent Documents 1 and 2).

Microfilm of Japanese Utility Model Publication No.54-22863 JP-A-3-232683 JP 2009-166970 A

  In the prior art described in Patent Document 1, since the guide strip is disposed only in the door pocket, there is no possibility that the user will hit the guide strip. However, since the lower side of the door is guided not only in the full range of opening and closing of the door but only in a part of the range within the door pocket, the lower side of the door may not be sufficiently suppressed from swinging between the back and the front. There is.

  In the prior art described in Patent Document 2, the leg portion formed on the lower end side of the door is configured to wrap around the lower surface of the sill through the front surface of the sill, so that the notch for passing the leg portion into the apron portion below the sill It is necessary to form the part long in the door opening / closing direction. When there is an error in the position with respect to the car and the landing, that is, there is a landing error, the notched portion may prevent the user from getting on smoothly.

  In the prior art described in Patent Document 3, since the guide link moves up and down in conjunction with opening and closing of the door, the reinforcing member cannot be attached to the door in the movement region of the guide link. Therefore, when a strong load is applied to the door, the door may be bent.

  SUMMARY OF THE INVENTION An object of the present invention is to provide an elevator door device that can stably guide a door without hindering smooth user getting on and off.

  In order to solve the above-mentioned problems, an elevator door device according to the present invention is an elevator door provided with a plurality of doors that are hung by an upper guide rail member disposed on the upper side of an entrance and are provided to open and close the entrance. A plurality of lower guide rail members provided on the lower end side of each door, and on a sill located on the lower end side of the doorway, so as to extend at least the entire opening / closing range of each door, A plurality of guide roller members that support the movement of the lower guide rail member with rollers.

  One end side of the plurality of lower guide rail members may be extended into a door pocket space that accommodates each door when each door is opened, and the plurality of guide roller members are located in the door pocket space. It may be provided on the threshold.

  According to the present invention, the lower guide rail member extending over the entire opening / closing range of the door can stably guide the door while suppressing the door from swinging between the car side and the landing side. it can. Since it is not necessary to form a groove or a guide projection on the upper surface of the sill, the user does not crawl when getting on and off, and user convenience is improved.

  In addition, since the lower guide rail member is provided only at the lower end of the door and supported by the guide roller member in the door pocket, the configuration is relatively simple, and the configuration using a member that moves up and down greatly like a guide link is used. There is no need to reinforce the back of the door.

FIG. 4 is a front view of a landing door when the door is closed as viewed from the car side according to the first embodiment. It is a front view which expands and shows the platform door at the time of door opening. It is a perspective view which shows a part of landing door of FIG. It is the side view which looked at FIG. 1 from the arrow IV direction. It is a side view which expands and shows the lower part of FIG. It is a front view which concerns on 2nd Example and expands and shows a part of landing door at the time of door closing seen from the cage | basket side. It is a front view which expands and shows a part of landing door door at the time of door opening.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. As described in detail below, the elevator door device of the present embodiment includes a plurality of lower guide rail members provided on the lower end side of each door so as to extend at least the entire opening / closing range of each door, and an entrance / exit A plurality of guide roller members which are provided on a sill located on the lower end side of the lower side and support movement of each lower guide rail member with a roller.

  A first embodiment will be described with reference to FIGS. In this embodiment, a case will be described in which the present invention is applied to a so-called two-door single door type door device in which two doors move in the same direction in conjunction with each other. FIG. 1 is a front view of a landing door viewed from the car side. FIG. 2 is an enlarged front view showing the landing door when the door is opened. FIG. 3 is an enlarged perspective view showing a part of the landing door.

  Entrance frames 1a and 1b are provided on both sides of the entrance / exit DW of the landing so as to protrude toward the landing. One entrance / exit frame 1a is a frame on the side where the door 3a contacts when the door is closed, and is also referred to as a door stop side entrance / exit frame 1a. The other entrance / exit frame 1b is a door-side frame in which the doors 3a and 3b are accommodated when the door is opened, and is also referred to as a door-case side entrance / exit frame 1b.

  In order to open and close the entrance / exit DW, a plurality of (for example, two) doors 3a and 3b are provided to be movable in the left-right direction in FIG. One door 3a is a high-speed door that comes into contact with the door-end doorway frame 1a when the door is opened. The other door 3b is a low-speed door connected to the rear side (closed side in the door opening / closing direction) of the high-speed door 3a.

  The car is provided with a car door and a door driving device for opening and closing the car door (none of which is shown). When the car arrives at the landing, the door driving device moves the car door in the door opening direction. The car door and the landing door are engaged via an engaging member, and the landing doors 3a and 3b are also moved in the door opening direction in conjunction with the movement of the car door in the door opening direction. When the door is closed, the landing doors 3a and 3b also move in the door closing direction in conjunction with the movement of the car door in the door closing direction.

  On the upper side of the entrance / exit DW, an upper guide rail member 10 is provided in a door opening / closing direction at a location that is not normally visible to passengers. A plurality of (in this example, two) hanger rollers 9 are slidably provided on the upper guide rail member 10 via rollers 8. One hanger roller 9 suspends the high speed door 3a, and the other hanger roller 9 suspends the low speed door 3b.

  The guide structure of the doors 3a and 3b will be described with reference to FIGS. Lower guide rail members 4a and 4b are provided on the lower ends of the doors 3a and 3b so as to extend at least the entire opening / closing range of the door. A notch 2 for inserting the lower guide rail members 4a and 4b is formed in the vertical direction on the back side wall of each door 3a and 3b.

  On the lower end side of one door 3a, one lower guide rail member 4a is provided over an opening / closing range La (see FIG. 3) of one door 3a. One lower guide rail member 4 a is attached to a wall portion on the back side of the door 3 a via a mounting bracket 7. One opening / closing range La is, for example, a region from the position where the door 3a abuts against the door-door doorway frame 1a to the installation position of the guide roller member 5a that supports the lower guide rail member 4a.

  On the lower end side of the other door 3b, the other lower guide rail member 4b is provided over the open / close range Lb of the other door 3b. The other lower guide rail member 4b is also attached to the wall portion on the back side of the door 3b via a mounting bracket 7. The other opening / closing range Lb is, for example, a region from a substantially middle point of the width dimension of the entrance / exit DW to a set position of the guide roller member 5b that supports the lower guide rail member 4b.

  Guide roller members 5a and 5b are provided on the upper surface of the platform sill 6 on the door pocket side. Therefore, the configuration of the guide roller members 5a and 5b will be described with reference to FIGS. Although FIG. 5 shows only one guide roller member 5a in an enlarged manner, the guide roller members 5a and 5b have the same configuration. Hereinafter, although description will be made centering on one guide roller member 5a, the same applies to the other guide roller member 5b.

  As shown in FIG. 5, the guide roller member 5a is fixed to the upper surface of the sill 6 using fixing means such as bolts or welding, and is opposed to the side wall portions 5a1 and 5a2, the stopper 5a3, and the rotating shaft 5c. The roller 5d is provided.

  The guide roller member 5a has a cross-section from side walls 5a1 and 5a2 facing each other with a width slightly larger than the width dimension W4 of the lower guide rail member 4a and a stopper 5a3 connecting the upper ends of the side walls 5a1 and 5a2. It is formed in a hat-like shape with a hook. A rotation shaft 5c is attached between the side wall portions 5a1 and 5a2, and a roller 5d is rotatably attached to the rotation shaft 5c. The lower guide rail member 4a having a hat-like cross section is attached so that the end located on the door pocket side covers the roller 5d from above. The roller 5d supports the lower guide rail member 4a from below while rotating following the movement of the lower guide rail member 4a.

  That is, the lower ends of both side portions of the lower guide rail member 4 a are spaced upward from the upper surface of the sill 6 by a predetermined dimension h. The lower guide rail member 4a is located above the threshold 6 and fixed to the lower end of the door 3a, and moves together with the door 3a.

  The stopper 5a3 is for restricting the end portion of the lower guide rail member 4a from being displaced upward by a predetermined amount or more. The end of the lower guide rail member 4a on the door contact side is fixed to the wall on the back side of the door 3a via the mounting bracket 7, and the end of the lower guide rail member 4a on the door pocket side is a free end. It has become. However, the upward displacement of the end portion on the door pocket side is regulated by the stopper 5a3 of the guide roller member 5a.

  Here, the relationship of the width dimension of each member is demonstrated. When the thickness dimension of the door 3a is W1, the width dimension in which the notch portion 2 is formed, that is, the width dimension W2 of the mounting space in which the lower guide structure is arranged is smaller than W1 by the thickness of the plate ( W1> W2). The width dimension W3 of the stopper 5a3 of the guide roller member 5a is slightly smaller than the mounting space W2 (W1> W2> W3). The width dimension W4 of the lower guide rail member 4a is slightly smaller than the separation dimension between the side wall portions 5a1 and 5a2 of the guide roller member 5a. The width dimension of the guide roller member 5a is formed so that the lower guide rail member 4a can slide smoothly. The side wall portions 5a1 and 5a2 of the guide roller member 5a may be coated with, for example, a self-lubricating resin material. By making the width dimensions of the lower guide rail member 4a and the guide roller member 5a as large as possible, the door 3a can be prevented from swinging between the car side and the landing side.

  Thus, in the present embodiment, the doors 3a, 3b are connected to the lower end side of the doors 3a, 3b via the guide rail members 4a, 4b and the guide roller members 5a, 5b. 3b can be stably guided on the lower side. Therefore, in this embodiment, there is no need to form a groove on the upper surface of the sill 6 or install a guide rail, and the user does not go into the groove or the guide rail. Moreover, since it is not necessary to form a groove, the manufacturing cost of the sill 6 can be reduced, and dust, foreign matter, and the like are not accumulated in the groove.

  Further, in the present embodiment, the lower guide rail members 4a and 4b are provided at the lower end sides of the doors 3a and 3b at least over the entire opening and closing direction of the doors, so that the doors 3a and 3b are opened when the doors 3a and 3b are closed. Can support firmly. In particular, as in this embodiment, in the case of a so-called two-door single door type door device that moves a plurality of doors in the same direction in conjunction with each other, the stroke (door opening / closing range) becomes long, so that it swings. Tends to grow. However, in the present embodiment, since the entire opening / closing direction of the doors 3a, 3b can be supported from the lower side, the swinging can be effectively suppressed as compared with the prior art that partially supports the lower side.

  A second embodiment will be described with reference to FIGS. In this embodiment, the guide structure described in the first embodiment is applied to a door device in which two doors open and close from the center to the left and right. FIG. 6 is an enlarged front view showing a part of the landing door 12 when the door is closed as viewed from the car side. FIG. 7 shows a state when the door is opened.

  A landing-side entrance / exit frame 11 is provided on both sides of the entrance / exit DW, and the two doors 12 open and close at the center of the entrance / exit DW. A lower guide rail member 14 is attached to the lower end side of each door 14 by a mounting bracket 7.

  A guide roller member 5a is fixed to the upper surface of the boarding sill 13 in the door pocket. The structure and relationship between the guide roller member 5a and the lower guide rail member 14 are basically the same as the structure and relationship between the guide roller members 5a and 5b and the lower guide rail members 4a and 4b described in the first embodiment. .

  Configuring this embodiment like this also achieves the same operational effects as the first embodiment. Furthermore, in this embodiment, since each door is applied to a door device that opens from the center of the entrance / exit DW to the left and right, the door opening / closing range (stroke) is short. Therefore, since the swing of the door 12 is originally small, the lower guide rail member 14 and the guide roller member 5a can guide the door 12 from the lower side while suppressing the swing of the door 12 more effectively.

  In addition, this invention is not limited to the Example mentioned above. A person skilled in the art can make various additions and changes within the scope of the present invention.

  1a, 1b, 11: entrance / exit frame, 8: roller, 9: hanger roller, 10: upper guide rail member, 2: notch, 3a, 3b, 12: door, 4a, 4b, 14: lower guide rail member, 5a, 5b: guide roller member, 6, 13: threshold, 7: mounting bracket, 5a1, 5a2: side wall, 5a3: stopper, 5c: rotating shaft, 5d: roller, DW: doorway

Claims (1)

An elevator door device comprising a plurality of doors suspended from an upper guide rail member disposed on the upper side of the doorway and provided to open and close the doorway,
A plurality of lower guide rail members provided on the lower end side of each door so as to extend at least the entire opening / closing range of each door;
A plurality of guide roller members provided on a sill located on the lower end side of the entrance and exit, and supporting the movement of each lower guide rail member with a roller;
With
One end sides of the plurality of lower guide rail members are extended into a door pocket space that accommodates the doors when the doors are opened,
Of the plurality of lower guide rail members, the portion located on the lower end side of the door is inserted into the interior space of the door,
The plurality of guide roller members are provided on the threshold located in the door pocket space,
A side wall portion located opposite on both sides of the front Symbol lower guide rail member,
A rotating shaft provided between the side walls,
The roller positioned below the lower guide rail member and rotatably attached to the rotating shaft, and supporting the lower guide rail member from below;
A stopper that is provided so as to connect the upper side of each of the side wall portions, and that restricts the lower guide rail member from being displaced upward by a predetermined amount or more;
Configured Rue elevators door system comprises a.

Images