JP2005138922A - Door device for elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide excellent opening/closing performance by restricting collision noise to be generated when blocking a clearance between a lower end of a door of an elevator and a doorsill. <P>SOLUTION: The door 1 for an elevator hall is supported by a door rail (not illustrated) in an upper part thereof, and door legs 4 are moved right and left with a guide by a doorsill groove 5a in a lower part thereof. The lower part of the door 1 for the elevator hall has a block plate 7 formed freely to be elevated. The rollers 8 are pivotally supported by the block plate 7, and roll in the top surface of the doorsill 5 with opening/closing movement of the door 1 for the elevator hall 1. When the door 1 for the elevator hall is moved in a direction A expressed with an arrow A to a door closing position, the rollers 8 are engaged with recessed parts 5b formed in the top surface of the doorsill 5, and the block plate 7 moves downward with the described engagement to block the clearance between the lower end of the door 1 for the elevator hall and the doorsill. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a device for shielding a gap between a door and a sill that opens and closes an entrance of an elevator.

  The conventional elevator passage door sealing structure includes an elevator passage door that covers an elevator passage entrance defined by the opening of the elevator passage wall structure. An elongated door support member is connected to the wall structure and is disposed substantially horizontally above the elevator passage entrance. A sealing structure is supported between the elevator passage door and the wall structure. An open position where the door support is connected to the elevator passage door and allows access to the elevator passage, and a closed position substantially covering the elevator passage entrance with a gap between the elevator passage door and the wall structure The door is movably connected to the elongated support member so that the door is movable in the lateral direction.

  The elongated support member includes a guide portion that guides the elevator passage door in a second direction toward the sealing structure while the elevator passage door is moved to the closed position. Unlike the side direction, the second direction is hermetically engaged with the elevator passage door sealing structure and seals between the door and the wall structure when the door is closed (see, for example, Patent Document 1). .

Japanese Patent Publication No. 11-503992 (abstract, FIG. 2, FIG. 3)

  In the conventional elevator passage door sealing structure as described above, when the door is moved to the closed position, the door is moved to the closed position when the direction to be directed toward the sealing structure is the downward direction. Since a door having a mass of 30 to 50 kg falls, a collision sound is generated due to a collision between the door and the sealing structure or the wall structure. Moreover, the apparatus which comprises a door apparatus is damaged by the impact of a collision.

  Furthermore, when the door is opened, the door is moved not only in the lateral direction but also in the upward direction. Therefore, in addition to the driving force for moving the door in the lateral direction, a driving force for moving the door in the upward direction is required. There are problems such as an increase in capacity and an increase in manufacturing cost.

  The present invention has been made to solve the above-described problems, and provides an elevator door device that has a simple configuration, suppresses a collision sound generated when the door is closed, and provides excellent opening / closing performance. For the purpose.

  In the elevator door device according to the present invention, a shielding plate that can be moved up and down along the door is arranged at the lower portion of the door, the upper portion of which is suspended and the lower portion is guided by the sill, and the upper surface of the sill is transferred to the shielding plate. A moving roller is supported, a recess is formed on the upper surface of the sill, and the recess is disposed at the position of the roller when the door is closed.

  In this invention, a shield plate that can be raised and lowered is arranged at the lower part of the door, a roller that rolls on the sill is pivoted on the shield plate, a recess is formed on the upper surface of the sill, and this is a roller when the door is closed. Since the shielding plate that is extremely lighter than the door is moved up and down, the collision noise generated when the door is closed can be suppressed to a low level.

Embodiment 1 FIG.
1 to 5 are diagrams showing an embodiment of the first and second inventions of the present invention. FIG. 1 is a front view of a landing door viewed from a hoistway side, and FIG. 2 is a view when the landing door of FIG. 1 is opened. 3 is a partially enlarged cross-sectional view of FIG. 2, (A) is a cross-sectional view taken along line IIIA-IIIA in FIG. 2, (B) is a cross-sectional view taken along line IIIB-IIIB, and (C) is also a IIIC. -IIIC sectional view, FIG. 4 is an enlarged view of the lower part of the landing door when the landing door is closed in FIG. 1, and FIG. 5 is an enlarged sectional view taken along the line V-V in FIG. (The following embodiments are also the same.)

  In the figure, a landing door (hereinafter simply referred to as a door) 1 is suspended on a door rail 3 a provided on the door device 3 via a hanger roller 2 a pivoted on a door hanger 2. A hanger hook 2 b is fixed to the door hanger 2 and is coupled to one side and the other side of the interlocking rope 3 c wound endlessly on pulleys 3 b provided at both ends of the door device 3. A door leg 4 is fixed to the lower end of the door 1, and a sliding portion 4a provided at the lower end thereof is inserted into a groove 5a of a sill 5 provided on the landing floor.

  A reinforcing plate 6 is fixed to the door 1. A shielding plate 7 that can be moved up and down in the vertical direction is disposed below the door 1, and a lower end portion 7 a and a shielding portion 7 b are formed at the lower end thereof. A roller 8 that rolls on the sill 5 is pivoted on 7a. A recess 5b is formed on the upper surface of the sill 5 at the position of the roller 8 when the door 1 is closed, and the height difference between the upper surface of the sill 5 and the bottom surface of the recess 5b is substantially equal to the radius of the roller 8. Has been.

A lower end of the guide rod 9 is fixed to the upper surface of the shielding plate 7, and a bearing 10 that allows the guide rod 9 to pass freely is fixed to the reinforcing plate 6.
Note that it is desirable to attach an elastic material such as rubber to the lower end of the shielding portion 7b of the shielding plate 7. Moreover, although the shielding board 7 shall support raising / lowering with the guide rod 9 and the bearing 10, it is not restricted to this, You may use a commercially available slide rail. Moreover, it is desirable to provide a buffer member on the outer periphery of the roller 8 or the bottom surface of the recess 5b of the sill 5, or both.

Next, the operation of this embodiment will be described.
When the door 1 is in the open state, as shown in FIG. 2, the shielding plate 7 is supported by the roller 8 and is located above the sill 5, and the shielding part 7 b is not in contact with the sill 5.
When the door 1 moves in the closing direction indicated by the arrow A and the roller 8 comes to the position of the recess 5b of the sill 5, as shown in FIG. Centering on the part, it rotates and moves to the bottom of the recess 5b. At this time, the shielding plate 7 supported by the roller 8 is lowered, and simultaneously with the completion of the closing of the door 1, the lower end of the shielding portion 7b and the upper surface of the sill 5 come into contact with each other.

  In this way, since the gap between the door 1 and the sill 5 is closed by raising and lowering the shield plate 7 that is extremely light compared to the door 1, the collision sound generated when the door 1 is closed is extremely low. It becomes possible to suppress to the level. Further, since the shielding plate 7 that is extremely light compared to the door 1 is moved up and down, it is not necessary to increase the driving force for moving the door 1, and by using the roller 8 having a low rolling resistance, the running resistance to the door rail 3a is small. It is suppressed and it becomes possible to obtain the same opening / closing performance as before.

Further, since the depth of the recess 5b of the sill 5 is formed to be about the radius of the roller 8, the door 1 can be closed without causing friction between the shielding plate 7 and the sill 5, and due to sliding friction of the shielding member. Deterioration can be eliminated.
Furthermore, since the roller 8 is moved up and down around the corner of the recess 5b of the sill 5 just before the closing of the door 1, the shielding plate 7 is moved up and down. The door 1 can be closed without causing friction between the door 7 and the sill, and it is possible to ensure the same opening / closing performance as before.

Further, since the lower end of the shielding plate 7 and the upper surface of the sill 5 are not in contact during the opening / closing operation of the door 1, even if an elastic material is attached to the shielding portion 7b, this elastic material will not slide and deteriorate. . Therefore, it is possible to reduce the maintenance cost by reducing the frequency of parts replacement.
Moreover, the thing of Embodiment 1 is applicable also to the existing elevator by adding the recessed part 5b to the sill 5, Furthermore, the shielding board 7, the guide rod 9, and the bearing 10 are further added to the existing door 1. FIG. Since it can also be installed, it is possible to minimize the cost of repairing existing elevator equipment.

Embodiment 2.
FIG. 6 is an enlarged view of the lower part of the landing door when the landing door is opened, showing an embodiment of the third invention of the present invention. 1 to 3 are also used in the second embodiment.
In this embodiment, the bottom surface of the recess 5b of the sill 5 and the top surface of the sill 5 are connected by an inclined surface 5c, and the recess 5b is formed in an inverted trapezoidal shape. Other than the above, the second embodiment is the same as the first embodiment.

Thus, since the inner surface of the recess 5b is the inclined surface 5c, immediately before the door 1 is closed, the roller 8 is guided by the inclined surface 5c and rotates, so that the movement is smooth and the recess 5b is moved up and down. It is possible to reduce the impact. Furthermore, the force by which the roller 8 moves downward to the bottom surface of the recess 5 b can be applied as the closing force of the door 1. Further, it is possible to reduce damage to the roller 8 due to the collision between the roller 8 and the upper edge portion of the recess 5b.
It should be noted that the same effect can be obtained even if roundness is formed on the upper edge of the recess 5b.

Embodiment 3 FIG.
FIG. 7 is an enlarged view of the lower part of the landing door when the landing door is opened, showing an embodiment of the fourth aspect of the present invention. 1 to 3 are shared by the third embodiment.
In this embodiment, the roller 8 is provided at the end of the door 1 on the door pocket side. In addition, the broken line B in a figure shows the position of the inner surface of the standing pillar of the landing three-way frame installed in the building side. Therefore, the figure shows a state in which the door 1 is opened to a position near the fully open position, and a part of the door 1 enters the right side of the broken line B, that is, the door pocket. In addition, the position of the recessed part 5b of the sill 5 is inevitably provided in the vicinity of the upright column of the three-sided frame, as the position of the roller 8 is arranged at the end of the door 1 on the door pocket side.

In this way, since the roller 8 is provided at the end of the door 1 on the door pocket side, it is possible to prevent an accident that a passenger trips into the recess 5b during getting on and off.
In the above description, the roller 8 is provided on the central sliding door, but the present invention can also be applied to the case of a two-panel sliding door. In this case, the door roller on the door pocket side is provided at the end of the door pocket side as in FIG. 7, and the door roller on the door stop side (the side that contacts the three-way frame) is provided at the end of the door stop side. Good.

Embodiment 4 FIG.
8 and 9 are enlarged views of the lower part of the landing door when the landing door is opened, showing an embodiment of the fifth invention of the present invention, FIG. 9 is a partially enlarged sectional view of FIG. 8, and (A) is IXA of FIG. -IXA line sectional view, (B) is also a IXB-IXB line sectional view.
In this embodiment, a roller 8 and a roller 8a similar to the roller 8 are pivotally supported at two places on the left and right sides of the door 1, and recesses 5b and 5d corresponding to the rollers 8 and 8a are provided in the sill 5. .

In addition, the roller 8 and the roller 8a, and the recessed part 5b and the recessed part 5d are arrange | positioned on both sides of the threshold groove 5a, respectively. Needless to say, when the door 1 is closed, the roller 8 and the recess 5b engage with each other, and the roller 8a and the recess 5d engage with each other.
Thus, since the rollers 8 and 8a and the recesses 5b and 5d are provided at two places on the left and right, the stability is increased, and the opening and closing of the door 1 and the traveling of the shielding plate 7 associated therewith can be made smooth. It becomes possible.

  In addition, since there are two rollers 8 and 8a in the depth direction of the door 1, the position in the depth direction of the door 1 changes due to an installation error or trouble during use, and even if one roller comes off, the remaining It is possible to maintain the lifting and lowering operation of the shielding plate 7 with one of these. Furthermore, since there are two rollers 8 and 8a, even if one roller is deteriorated, the remaining one can maintain the lifting and lowering operation of the shielding plate 7.

Embodiment 5 FIG.
FIG. 10 is an enlarged view of the lower part of the landing door when the landing door is opened, showing an embodiment of the sixth aspect of the present invention.
In this embodiment, protective plates 7 c are provided on both sides of the roller 8, and the protective plate 7 c is disposed so as to face the outer peripheral surface of the roller 8. Note that it is desirable that the protective plate 7c be slightly inclined with respect to the upper surface of the sill 5 so that the lower side is opened rather than the upper side.

  Thus, since the protection plates 7c are provided on both sides of the roller 8, even if there are obstacles such as dust and dust on the threshold 5, they can be eliminated. Accordingly, it is possible to avoid a failure in which dust or the like bites into the roller 7c, causing the roller 7c to rotate poorly and the opening / closing performance of the car door 1 to deteriorate.

Embodiment 6 FIG.
FIG. 11 is an enlarged view of the lower part of the landing door when the landing door is opened, showing an embodiment of the seventh aspect of the present invention.
In this embodiment, a groove 5e is formed at the bottom of the recess 5b.
Since the recess 5b is provided with the groove 5e, even if dust, dust, or the like enters the recess 5b, it falls into the groove 5e. Therefore, it is possible to avoid the problem that the recess 5b is blocked by dust and the shielding plate 7 is not lowered and cannot be shielded.
A hole may be provided instead of the groove 5e.

Other embodiments.
In each of the above-described embodiments, the description has been given of the case where the gap between the lower end of the landing door 1 and the landing threshold 5 is shielded. It is. In other words, it is possible to configure a device that blocks the gap between the lower end of the car door and the car sill (not shown).

The front view of the landing door seen from the hoistway side which shows Embodiment 1 of this invention. FIG. 2 is an enlarged view of a lower part of the landing door when the landing door of FIG. 1 is opened. FIG. 3 is a partially enlarged sectional view of FIG. 2, (A) is a sectional view taken along line IIIA-IIIA in FIG. 2, (B) is a sectional view taken along line IIIB-IIIB, and (C) is a sectional view taken along line IIIC-IIIC. FIG. 2 is an enlarged view of the lower part of the landing door when the landing door of FIG. 1 is closed. The VV line expanded sectional view of FIG. The landing door lower part enlarged view at the time of the landing door opening which shows Embodiment 2 of this invention. The landing door lower part enlarged view at the time of the landing door opening which shows Embodiment 3 of this invention. The landing door lower part enlarged view at the time of the landing door opening which shows Embodiment 4 of this invention. FIG. 9 is a partially enlarged cross-sectional view of FIG. 8, (A) is a cross-sectional view taken along line IXA-IXA in FIG. 8, and (B) is a cross-sectional view taken along line IXB-IXB. The landing door lower part enlarged view at the time of the landing door opening which shows Embodiment 5 of this invention. The landing door lower part enlarged view at the time of the landing door opening which shows Embodiment 6 of this invention.

Explanation of symbols

  1 landing door, 3a door rail, 4 door legs, 5 sill, 5a sill groove, 5b recess, 5c inclined surface, 7 shielding plate, 7a lower end, 7b shielding portion, 7c protection plate, 8, 8a roller.

Claims (7)

  A device that opens and closes the doorway of the elevator, suspends the upper part of this door, and guides the lower part with a sill, arranges a shielding plate that can be raised and lowered along the door at the lower part of the door, and this shielding plate An elevator door device characterized in that a roller that rolls on the upper surface of the sill is supported, a recess is formed on the upper surface of the sill, and the recess is disposed at the position of the roller when the door is closed.   The elevator door device according to claim 1, wherein the depth of the concave portion of the sill is about the radius of the roller.   The elevator door device according to claim 1 or 2, wherein a bottom surface of the recess of the sill is connected to an upper surface of the sill by an inclined surface, or a roundness is formed at an upper edge of the recess.   The elevator door device according to any one of claims 1 to 3, further comprising a door pocket in which the door is accommodated when the door is opened, and a roller disposed at an end portion on the door pocket side of the door.   The two rollers are pivoted at a distance from each other and arranged with a sill groove therebetween, and a recess corresponding to the two rollers is formed on the sill upper surface. The elevator door device according to claim 4.   The elevator door device according to any one of claims 1 to 5, wherein a protective plate disposed on both sides of the roller and facing the outer peripheral surface of the roller is provided on the shielding plate. The elevator door device according to any one of claims 1 to 6, wherein a groove or a hole is provided in the bottom surface of the recess of the sill.

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