JP2011235977A - Door device of elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a door device of an elevator which suppresses wear of a lower sealing material and prolongs the life, eliminates generation of abnormal sound upon opening and closing operation of a door, and suppresses degradation of a smoke insulation effect caused by a damage of the lower sealing material, by allowing the lower sealing material to come into contact with an upper surface of a threshold only when the door is fully closed.SOLUTION: A roller guide passage 22 is formed on a fold-back side 11b of a door panel 11 in a shape of a guide passage in a way that the height position of the door-pocket-side end is higher than that of a door-stop-side end and a guide roller 20 is allowed to move in the direction of the guide passage. The guide roller 20 fitted to the roller guide passage 22 is rotatably fitted to a support arm 17 of a door hanger 15, and the door panel 11 is hung on a door rail. A return spring 24 is arranged so that the support arm 17 may be urged to position the guide roller 20 at the door-stop-side end of the roller guide passage 22. The door hanger 15 is inhibited from moving in the closing direction at the position before full close of a landing door.

Description

  The present invention relates to an elevator door device, and more particularly to a smoke shielding structure between a door and a sill.

  A door body of a conventional elevator landing door device has a door panel and a lower reinforcing member fixed to the back surface of the lower end of the door panel, and the legs of a plurality of doors inserted into the sill groove are used as the lower reinforcing member. It is fixed. And the sealing member which consists of elastic bodies, such as rubber | gum, is fixed to the lower reinforcement member except the part of the leg of a door, and is arrange | positioned at the whole width direction of a door main body. The seal member is in contact with the surface of the landing sill on the landing side from the sill groove, and the sealing member slides on the surface of the landing sill when the door body is opened and closed. And in a door closed state, the clearance gap between the lower end part of a door main body and a landing threshold is shielded by the sealing member (for example, refer patent document 1).

Japanese Patent Laid-Open No. 2005-16034

  In a conventional elevator landing door device, the seal member fixed to the lower reinforcing member slides on the surface of the landing sill when the door body is opened and closed. Therefore, there is a problem that the seal member is worn and the life cannot be extended. In addition, when foreign matter adheres to the surface of the landing threshold, there is a problem that abnormal noise is generated during the opening and closing operation of the door body, and further, the sealing member is damaged and the smoke shielding effect is lowered.

  The present invention has been made to solve such problems, and only when the door is fully closed, the lower hermetic material is in contact with the upper surface of the sill, thereby suppressing the wear of the lower hermetic material and extending the life. An object of the present invention is to provide an elevator door device that is free from abnormal noise during the opening and closing operation of the door and can suppress a reduction in smoke shielding effect due to damage to the lower airtight member.

  The elevator door device according to the present invention includes, on the hoistway side at the upper part of the entrance / exit, a door rail extending in the entrance / exit direction, a base on which a hanger roller is rotatably attached, and a base extending downward from the base. The hanger roller is hung on the door rail, the hanger roller rolls on the door rail and is installed so as to be movable in the extending direction of the door rail, and on the lower end side of the support arm. A guide roller mounted rotatably and a roller guide path having a guide path direction as a frontage direction are formed on the upper side, and the guide roller is fitted to the roller guide path so as to be movable in the guide path direction. A door that opens and closes the doorway and urges the support arm toward the door stop side to position the guide roller at the door stop side end of the roller guide path. A return spring, a stopper that prevents the door hanger from moving in the door closing direction at a position before the door is fully closed, and the floor of the doorway is moved up and down so as to be positioned below the door. A sill disposed on the road side for guiding opening and closing of the door, and a lower airtight member extending across the entire area of the doorway so as to protrude from the lower end of the door. The roller guide path is formed in a guide path shape that makes the height position of the end portion on the door pocket side higher than the height position of the end portion on the door stop side, and the door is in the fully closed position from the fully closed position. The guide roller moves against the biasing force of the return spring from the end on the door stop side to the end side on the door pocket side in the roller guide path to lower the door, The lower airtight material was in contact with the upper surface of the sill.

  According to the present invention, when the door moves from the fully closed position to the fully closed position, the guide roller resists the urging force of the return spring and moves in the roller guide path from the door end to the door side. Move to. At this time, the door is lowered by its own weight, the lower airtight material is in contact with the upper surface of the sill, and a lower smoke shielding structure is constructed. Therefore, the lower airtight material comes into contact with the upper surface of the sill only when the door is fully closed, and the occurrence of wear and damage to the lower airtight material due to the lower airtight material sliding on the upper surface of the sill is suppressed. The lifetime is improved and the smoke shielding effect is ensured in the long term. Furthermore, the generation of abnormal noise due to the lower airtight material sliding on the upper surface of the sill is eliminated.

It is the front view which looked at the door closed state of the elevator landing door apparatus which concerns on Embodiment 1 of this invention from the hoistway side. It is the front view which looked at the door open state of the landing door apparatus of the elevator which concerns on Embodiment 1 of this invention from the hoistway side. FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 1. FIG. 4 is a cross-sectional view taken along arrow IV-IV in FIG. 2. It is a VV arrow sectional view of Drawing 1. FIG. 6 is a cross-sectional view taken along the line VI-VI in FIG. 2. It is a VII-VII arrow sectional view of Drawing 3. It is a VIII-VIII arrow directional cross-sectional view of FIG. It is principal part sectional drawing which shows the door opening / closing operation | movement state of the elevator landing door apparatus which concerns on Embodiment 2 of this invention. It is principal part sectional drawing which shows the door opening / closing operation | movement state of the elevator landing door apparatus which concerns on Embodiment 2 of this invention.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of an elevator door device of the invention will be described with reference to the drawings.

Embodiment 1 FIG.
1 is a front view of a door closing state of an elevator landing door device according to Embodiment 1 of the present invention as viewed from the hoistway side, and FIG. 2 is a door opening state of the elevator landing door device according to Embodiment 1 of the present invention. 3 is a sectional view taken along the line III-III in FIG. 1, FIG. 4 is a sectional view taken along the line IV-IV in FIG. 2, and FIG. 5 is a sectional view taken along the line V-V in FIG. 6 is a sectional view taken along arrow VI-VI in FIG. 2, FIG. 7 is a sectional view taken along arrow VII-VII in FIG. 3, and FIG. 8 is a sectional view taken along arrow VIII-VIII in FIG.

  1 to 8, a landing entrance 4 is formed on a concrete wall 3 that is a building frame so as to communicate a hoistway 1 and a landing 2 where a car (not shown) moves up and down. A three-way frame 5 as an entrance / exit frame is installed at the landing entrance 4. The door rail 6 is fixed to the upper part of the landing doorway 4 on the side of the hoistway 1 so as to extend in the entrance direction of the landing doorway 4. A landing threshold 7 is attached to the hoistway 1 side of the landing entrance 4 of the floor 2a of the landing 2 so as to extend in the frontage direction. A landing sill groove 8 is recessed on the upper surface of the landing sill 7 with the groove direction as the frontage direction.

  The landing door 10 includes a door panel 11 made by bending a steel plate whose surface is a design surface into a U-shaped cross section, and a lower reinforcing member 12 fixed to the lower end of the back surface of the door panel 11. Two door guide shoes 13 inserted into the landing threshold groove 8 extend from the lower end of the door panel 11 and are spaced apart in the width direction of the door panel 11, that is, the frontage direction, and are fixed to the lower reinforcing member 12. A lower airtight member 14 made of an elastic material such as rubber and in contact with the upper surface of the landing threshold groove 8 when the door is fully closed is fixed to the lower reinforcing member 12 except for the door guide shoe 13, and is fixed from the lower end of the door panel 11. It extends over a predetermined length and extends over the entire area of the door panel 11 in the frontage direction.

  The door hanger 15 is made of a steel plate, and has a rectangular flat plate-like base portion 16 and a pair of support arms 17 that are spaced apart in the length direction of the base portion 16 and extend in parallel with each other from one long side of the base portion 16. Have Two pairs of the hanger roller 18 and the thrust roller 19 are disposed on one surface of the base portion 16 so as to be separated from each other in the length direction of the base portion 16. Each pair of the hanger roller 18 and the thrust roller 19 is attached so as to be rotatable around a rotation axis orthogonal to one surface of the base 16, with a predetermined distance in the width direction of the base 16. Each support arm 17 extends from one long side of the base 16 in the separating direction of the hanger roller 18 and the thrust roller 19 at the attachment position of the hanger roller 18 and the thrust roller 19 in the length direction of the base 16. Further, the guide roller 20 is attached so as to be rotatable around a rotation axis orthogonal to the other surface of each support arm 17.

  The upper end side of the door panel 11 is bent in a U shape on the back surface side, and an upper end plate 11a and a folded side 11b are formed. The guide member 21 is attached to the back surface of the folded side 11b, that is, the inner surface of the U-shape so as to be separated from each other in the width direction of the door panel 11 to constitute a roller guide path 22. Each of the roller guide paths 22 is formed on both sides in the width direction on the upper side of the door panel 11 with the guide path direction being the width direction of the door panel 11. As shown in FIGS. 7 and 8, each of the roller guide paths 22 is a guide path in which the height position is gradually increased toward the door pocket and the guide roller 20 is fitted so as to be movable in the guide path direction. It is formed into a shape. Further, the support arm insertion hole 23 is formed in the upper end plate 11 a so that the hole direction coincides with the width direction of the door panel 11 and includes the formation region of the roller guide path 22 in the width direction of the door panel 11.

  The door hanger 15 inserts a pair of support arms 17 into each of the support arm insertion holes 23, and inserts the guide roller 20 into the roller guide path 22 on the distal end side of the support arm 17 inserted from the support arm insertion hole 23. It is rotatably mounted on the other surface and assembled to the door panel 11. The return spring 24 is disposed between the back surface of the folded side 11 b and the support arm 17 so as to bias the support arm 17 toward the end of the roller guide path 22 on the door-stop side. Furthermore, when the landing door 10 is fully closed, a stopper 25 is installed at a position returned by a predetermined distance in the door opening direction from the position where the hanger roller 18 originally arrives to prevent the hanger roller 18 from rolling further in the closing direction. . Furthermore, the landing door 10 is positioned at the fully closed position, the position is adjusted so that the extended end of the lower airtight member 14 is in contact with the upper surface of the landing threshold 7, and the lower airtight member 14 is fixed to the lower reinforcing member 12.

  Note that the smoke shielding structure on the upper side and the door pocket side of the landing door 10 employs a well-known structure, and the description thereof is omitted here.

Next, the operation of the landing door apparatus configured as described above will be described.
The landing door 10 is hung by hanging a hanger roller 18 on the door rail 6, and is installed on the hoistway 1 side of the three-way frame 5 so that the landing doorway 4 can be opened and closed. The thrust roller 19 contacts the lower surface of the door rail 6 to prevent the door hanger 15 from jumping up. A door guide shoe 13 extending from the lower end of the door panel 11 is housed in the landing threshold groove 8. When the opening / closing force of the car door (not shown) is transmitted to the landing door 10, the hanger roller 18 rolls on the door rail 6, and the door panel 11 is guided by the door rail 6 and moves in the frontage direction. At this time, the door guide shoe 13 slides in the landing threshold groove 8 and the swinging of the lower side of the door panel 11 is suppressed.

  During the closing operation of the landing door 10, the urging force F of the return spring 24 acts to move the support arm 17 to the door stop side, and the guide roller 20 is located at the end of the roller guide path 22 on the door stop side. The hanger roller 18 rolls on the door rail 6 and the door hanger 15 closes the landing door 10 by the frictional force between the guide roller 20 and the guide member 21 of the roller guide path 22 and the biasing force F of the return spring 24. Move in conjunction with movement. At this time, the guide roller 20 is positioned at the end of the roller guide path 22 on the door stop side, and the lower airtight material 14 is separated from the upper surface of the landing threshold 7.

  Then, when the landing door 10 moves until just before full closing, the hanger roller 18 comes into contact with the stopper 25 and further movement in the closing direction is prevented. Therefore, the landing door 10 moves to the fully closed position while resisting the urging force F of the return spring 24, and the guide roller 20 moves in the roller guide path 22 to the door pocket side. At this time, since the height position of the guide roller 20 does not change, the landing door 10 is lowered by its own weight as the guide roller 20 moves in the roller guide path 22 to the door pocket side. When the landing door 10 is fully closed, the extended end of the lower airtight member 14 comes into contact with the upper surface of the landing threshold groove 8 of the landing threshold 7 on the hoistway 1 side, as shown in FIGS. 1 and 5. The smoke shielding structure at the lower part of the landing door 10 is constructed.

  Further, when the landing door 10 moves in the opening direction from the fully closed state, the guide roller 20 moves in the roller guide path 22 to the door stop side while giving up the stored force of the return spring 24. At this time, since the height position of the guide roller 20 does not change, as the guide roller 20 moves in the roller guide path 22 to the door stop side, the landing door 10 rises, and the extended end of the lower airtight member 14 is As shown in FIG. 2 and FIG. 6, the landing threshold groove 8 of the landing threshold 7 is separated from the upper surface on the hoistway 1 side. When the guide roller 20 comes into contact with the door end of the roller guide path 22, the moving force in the opening direction of the landing door 10 is transmitted to the door hanger 15, and the hanger roller 18 rolls on the door rail 6 to cause the door hanger. 15 moves in conjunction with the opening operation of the landing door 10.

  According to the first embodiment, the roller guide path 22 is configured in a guide path shape whose height position gradually increases toward the door pocket side, and the hanger roller 18 abuts against the stopper 25 at the position before the fully closed position of the landing door 10. Further movement in the closing direction is prevented. Therefore, when the landing door 10 moves from the fully closed position to the fully closed position, the guide roller 20 moves in the roller guide path 22 to the door side, and the landing door 10 is lowered by its own weight. When the landing door 10 moves to the fully closed position, the lower airtight material 14 comes into contact with the upper surface of the landing threshold 7 and a lower smoke shielding structure is constructed.

  Thus, since the lower airtight material 14 contacts the upper surface of the landing sill 7 only when the landing door 10 is fully closed, the wear of the lower airtight material 14 is remarkably reduced, and the service life is extended. Further, when the landing door 10 is opened and closed, the lower airtight member 14 is separated from the upper surface of the landing threshold 7, so that there is no annoying sliding sound of the lower airtight member 14. Furthermore, there is no damage to the lower airtight material 14 due to the lower airtight material 14 sliding on the upper surface of the landing sill 7 with foreign matter in between, and a smoke shielding effect is ensured for a long time.

Embodiment 2. FIG.
FIG. 9 is a cross-sectional view of the main part showing the door opening / closing operation state of the elevator landing door device according to Embodiment 2 of the present invention, and FIG. 10 is the door opening / closing operation of the elevator landing door device according to Embodiment 2 of the present invention. It is principal part sectional drawing which shows a state.

9 and 10, the guide hole 26 is formed in the folded side 11 b so as to be separated in the width direction of the door panel 11, and constitutes a roller guide path 27. The roller guide paths 27 are formed on both sides in the width direction on the upper side of the door panel 11 with the guide path direction being the width direction of the door panel 11. Each of the roller guide paths 27 is formed in a guide path shape in which the height position gradually increases toward the door pocket and the guide roller 20 is fitted so as to be movable in the guide path direction. The guide roller 20 is mounted on the back surface of the support arm 17 inserted through the support arm insertion hole 23 and inserted into the roller guide path 27.
Other configurations are the same as those in the first embodiment.

  Therefore, also in the second embodiment, only when the landing door 10 is fully closed, the lower airtight material 14 is in contact with the upper surface of the landing sill 7 and the lower smoke-shielding structure is constructed. Wear is remarkably reduced, and a long life is achieved. Further, when the landing door 10 is opened and closed, the lower airtight member 14 is separated from the upper surface of the landing threshold 7, so that there is no annoying sliding sound of the lower airtight member 14. Furthermore, there is no damage to the lower airtight material 14 due to the lower airtight material 14 sliding on the upper surface of the landing sill 7 with foreign matter in between, and a smoke shielding effect is ensured for a long time.

  In the second embodiment, since the guide hole 26 is formed in the folded side 11b to form the roller guide path 27, it is not necessary to attach the guide member 21 to the back surface of the folded side 11b, and the number of parts is reduced. Cost reduction is achieved.

In addition, in each said embodiment, although it shall apply to the door apparatus of a double sliding door, even if it applies to the door apparatus of a single sliding door, there exists the same effect.
Moreover, in each said embodiment, although it shall apply to a landing door apparatus, there exists the same effect, even if it applies to a car door apparatus.
In each of the above embodiments, the stopper is in contact with the hanger roller to prevent the door hanger from moving in the closing direction. However, the stopper is in contact with the door hanger to prevent the door hanger from moving in the closing direction. Also good.

  Further, in each of the above embodiments, the height position of the roller guide path is configured to gradually increase toward the door pocket side, but the height position of the roller guide path does not necessarily face the door pocket side. When the guide roller is located at the door end side of the roller guide path, the lower airtight material is separated from the landing threshold, and the guide roller is on the end side of the roller guide path on the door pocket side. The lower airtight material may be in contact with the landing threshold when located in For example, the roller guide path may be configured such that its height position gradually decreases from the door end to the door pocket side and then gradually increases. In this case, it becomes difficult for the guide roller to move from the door contact side end of the roller guide path to the door bag side, so that the moving force in the closing direction of the landing door is reliably transmitted to the door hanger, and the door hanger follows the closing movement of the landing door. Sexuality is enhanced.

  1 hoistway, 4 landing doorway, 6 door rail, 7 landing sill, 10 landing door, 11 door panel, 14 lower airtight material, 15 door hanger, 16 base, 17 support arm, 18 hanger roller, 20 guide roller, 22, 27 roller guideway , 24 Return spring, 25 Stopper.

Claims (1)

On the hoistway side at the top of the doorway, a door rail extending in the entrance direction of the doorway,
A hanger roller has a base portion rotatably attached thereto, and a support arm extending downward from the base portion. The hanger roller is hung on the door rail, and the hanger roller rolls on the door rail to extend the door rail. A door hanger installed to be movable in the installation direction;
A guide roller rotatably attached to the lower end side of the support arm;
A roller guide path having a guide path direction as a frontage direction is formed on the upper side, the guide roller is fitted to the roller guide path so as to be movable in the guide path direction, suspended from the door rail, and opens and closes the doorway Door,
A return spring that urges the support arm to the door stop side to position the guide roller at the door end side of the roller guide path;
A stopper that prevents movement of the door hanger in the door closing direction at a position before the door is fully closed when the door is closed;
A sill that is disposed on the hoistway side of the floor of the doorway so as to be positioned below the door, and that guides opening and closing of the door;
A lower airtight material extending across the entire area of the doorway so as to protrude from the lower end of the door,
The roller guide path is formed in a guide path shape that makes the height position of the end portion on the door pocket side higher than the height position of the end portion on the door stop side,
When the door moves from the fully closed position to the fully closed position, the guide roller resists the urging force of the return spring and moves in the roller guide path from the door end to the door side. The elevator door apparatus according to claim 1, wherein the door is lowered to contact the upper surface of the sill.

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