JP2005104668A - Elevator door device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elevator door device capable of reliably sealing a gap at a lower end part of a door body as necessary while maintaining the opening/closing operational performance of the door body during a regular operation. <P>SOLUTION: A hanger rail 8 is mounted on a door hanger case 6. The hanger rail 8 is displaceable between a regular position in a regular condition and a lowered position below the regular position. Two door bodies 17 which are moved along the hanger rail 8 to open/close a landing entrance/exit 1 are hanged from the hanger rail 8. When the door is closed, the hanger rail 8 is displaced to the lowered position, lower end parts of the door bodies 17 are abutted on an upper surface of a landing sill 5 to seal a gap between the lower end parts of the door bodies 17 and the landing sill 5. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an elevator door device having a door main body that opens and closes a landing doorway or a car doorway.

  In a conventional elevator landing door device, a shield that shields the gap between the lower end of the landing door and the sill when the door is closed is provided at the lower end of the landing door. The shield is displaced obliquely upward during the door opening operation and is separated from the sill. Further, when the door is closed, it is displaced obliquely downward and contacts the sill when the door is completely closed (see, for example, Patent Document 1).

Utility Model Registration No. 3032400

  However, in the structure as described above, it is necessary to strictly adjust and maintain the mounting position of the shield. This is because if the shield comes in contact with the sill before the landing door is completely closed, the landing door will not be fully closed. This is because a gap remains when the valve is fully closed. Therefore, it takes time to install and maintain the shield.

  The present invention has been made to solve the above problems, and more reliably shields the gap at the lower end of the door body when necessary while maintaining the opening / closing performance of the door body during normal operation. The object is to obtain an elevator door device that can be used.

  The elevator door device according to the present invention is provided above the doorway and is hung from a hanger rail that is displaceable from a normal position located at a normal time to a lowered position below the normal position, and moves along the hanger rail. A door body that opens and closes the door, and a displacement means that displaces the hanger rail from the normal position to the lowered position. When the door is closed, the hanger rail is displaced to the lowered position so that the lower end of the door body is the floor of the doorway. The gap between the lower end portion of the door body and the floor portion is shielded.

  The elevator door device according to the present invention normally has a clearance between the lower end portion of the door main body and the floor portion, and when the hanger rail is moved downward by the displacement means, the lower end portion of the door main body becomes the floor portion. Therefore, the gap at the lower end of the door body can be more reliably shielded when necessary while maintaining the opening / closing performance of the door body during normal operation.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

Embodiment 1 FIG.
1 is a rear view showing a landing door device for an elevator according to Embodiment 1 of the present invention (viewed from a hoistway side), FIG. 2 is a rear view showing a state in which the door body of FIG. 1 is lowered, and FIG. 2 is a cross-sectional view taken along line III-III, FIG. 4 is an enlarged rear view showing the main part of FIG. 1, and FIG. 5 is a side view showing the main part of FIG.

  In the drawing, an entrance / exit frame (three-way frame) 2 is fixed to both sides and an upper portion of the landing entrance 1. The entrance / exit frame 2 includes a pair of vertical frames 3 extending vertically and an upper frame 4 provided horizontally between the upper ends of the vertical frames 3. A landing threshold 5 is fixed to the floor of the landing entrance 1. The landing sill 5 is provided with a sill groove 5a extending in the direction of the frontage of the landing doorway 1.

  A door hanger case 6 is fixed to the upper part of the upper frame 4 via an upper frame fixing member 7 (FIG. 5). A hanger rail 8 is attached to the door hanger case 6. The hanger rail 8 can be displaced from a normal position (FIG. 1) located at a normal time to a lowered position (FIG. 2) below the normal position. Further, the hanger rail 8 can be displaced from the lowered position to the normal position.

  The door hanger case 6 is provided with a plurality of guide shafts 9 penetrating the hanger rail 8. The hanger rail 8 is provided with a plurality of arc-shaped guide holes 8a through which the guide shaft 9 passes. When the hanger rail 8 is displaced, the guide shaft 9 is slid in the guide hole 8a.

  An auxiliary lever 10 is connected between the end of the hanger rail 8 in the longitudinal direction and the door hanger case 6 so as to swing along with the displacement of the hanger rail 8. A drive lever 11 having a “H” -shaped bent shape is connected between the longitudinal center of the hanger rail 8 and the door hanger case 6. The drive lever 11 is attached to the door hanger case 6 so as to be swingable about the main shaft 12. Further, a rail side shaft 13 that is rotatably connected to the hanger rail 8 is provided at one end of the drive lever 11. When the hanger rail 8 is in the normal position, the portion from the rail side shaft 13 to the main shaft 12 of the drive lever 11 extends along the vertical direction.

  A rail drive motor 14 as a displacement means for swinging the drive lever 11 is attached to the door hanger case 6 so as to be rotatable about a fulcrum pin 15. An operation rod 16 that is moved up and down by the driving force of the rail drive motor 14 is connected between the rail drive motor 14 and the other end of the drive lever 11.

  When the operating rod 16 is moved upward from the state of FIG. 1, the drive lever 11 is swung clockwise around the main shaft 12, and the hanger rail 8 is displaced to a downwardly lowered position. Further, when the operating rod 16 is moved downward from the state of FIG. 2, the drive lever 11 is swung in the counterclockwise direction about the main shaft 12, and the hanger rail 8 is displaced to the normal position obliquely upward.

  Two door main bodies 17 that open and close the landing doorway 1 by moving along the hanger rail 8 are suspended from the hanger rail 8. The landing door device of the first embodiment is a center opening type. Each door body 17 includes a door panel 18 that opens and closes the hall entrance 1 and a door hanger 19 that is fixed to the upper end of the door panel 18.

  Each door hanger 19 is provided with a plurality of hanger rollers 20 that roll along the upper side of the hanger rail 8 and a plurality of rotatable pinching rollers 21 that sandwich the hanger rail 8 between the hanger rollers 20. A plurality of door legs 22 inserted in the sill groove 5 a are fixed to the lower end of each door body 17.

  When the door is closed, the hanger rail 8 is displaced to the lowered position, so that the lower end of the door body 17 abuts the upper surface of the landing sill 5 as shown in FIG. 3, and the lower end of the door body 17 and the landing sill 5 is shielded. When the door is closed, the door main bodies 17 are connected to each other by a locking hook (not shown), and the door main body 17 does not open due to downward displacement.

  Next, FIG. 6 is a sectional view taken along line VI-VI in FIG. In the drawing, a pair of steadying members 23 that are in contact with both surfaces of the hanger rail 8 are fixed to the guide shaft 9. This prevents the hanger rail 8 from swinging in the direction perpendicular to the front of the door panel 18 (the left-right direction in FIG. 5).

  Further, as shown in FIG. 3, for example, a sheet-like heat-resistant elastic member 24 is fixed to the lower end portion of the door body 17. Further, as shown in FIG. 5, the upper end portion of the door panel 18 abuts on the upper surface of the upper frame 4 when the door main body 17 is moved downward, and a gap between the door main body 17 and the upper frame 4 is formed. An upper shielding member 25 for shielding is attached. A curved leaf spring is used as the upper shielding member 25 and is elastically deformed by contact with the upper frame 4 to generate a predetermined contact pressure. The upper shielding member 25 is continuously provided over the entire width direction of the door body 17.

  FIG. 7 is a sectional view taken along line VII-VII in FIG. When the door is closed, the door body side end portion (door opening side end portion) of the door main body 17 is in contact with the vertical frame 3 to form a gap between the door bag side end portion of the door main body 17 and the vertical frame 3. A side shielding member 26 for shielding is attached. A curved leaf spring is used as the side shielding member 26 and is elastically deformed by contact with the vertical frame 3 to generate a predetermined contact pressure. Further, the side shielding member 26 is continuously provided over the entire vertical direction of the door panel 18. 1 and 2, the illustration of the side shielding member 26 is omitted.

  Next, the operation will be described. When the occurrence of a fire is detected by a fire detector or the like installed in the building, it is confirmed on the control panel whether each landing door device is in a closed state. When the door is closed, a lowering command signal is output from the control panel to the landing door device. Thereby, the rail drive motor 14 is driven, the hanger rail 8 is displaced to the lowered position, and the door body 17 is lowered accordingly. And the clearance gap between the lower end part of the door main body 17 and the upper surface of the landing threshold 5 is shielded. When the landing door device is in the door open state, the descent command signal is output after waiting for the door door to be closed.

  When the door body 17 is displaced to the lowered position, the upper shielding member 25 comes into contact with the upper frame 4. When the door is closed, the side shielding member 26 is in contact with the vertical frame 3. Accordingly, the entire gap around the door body 17 is shielded.

  Thus, according to the landing door device of the first embodiment, the gap at the lower end of the door body 17 can be more reliably shielded when necessary. Thereby, smoke insulation and sound insulation can be improved. Further, during normal operation, the hanger rail 8 is in the normal position, and the lower end portion of the door body 17 is separated from the landing sill 5, so that the opening / closing operation performance of the door body 17 during normal operation is maintained.

Further, since the heat-resistant elastic member 24 is fixed to the lower end portion of the door body 17, the degree of adhesion of the lower end portion of the door body 17 to the landing sill 5 when displaced to the lowered position can be improved. The property can be further improved.
Furthermore, since the upper shielding member 25 is provided at the upper end portion of the door panel 18, the gap between the door body 17 and the upper frame 4 can also be shielded, and the smoke shielding property can be further improved.
Furthermore, since the side shielding member 26 is provided at the door bag side end portion of the door body 17, the gap between the door body 17 and the vertical frame 3 can also be shielded, and the smoke shielding property can be further improved. it can.

In the first embodiment, the hanger rail 8 is moved up and down obliquely by swinging the drive lever 11, but the hanger rail may be moved up and down vertically by directly transmitting the driving force of the rail drive motor to the hanger rail. .
Further, in the first embodiment, the hanger rail 8 is displaced in both the upper and lower directions by the rail drive motor 14, but only the displacement of the hanger rail to the lowered position is automatically performed by the displacement means such as the rail drive motor to the normal position. The return may be performed manually by an operator, for example.
Furthermore, in Embodiment 1, although the heat resistant elastic member 24 was fixed to the lower end part of the door main body 17, you may provide in the floor part side.

Embodiment 2. FIG.
Next, FIG. 8 is a rear view showing an elevator landing door device according to Embodiment 2 of the present invention, FIG. 9 is a rear view showing the lowered state of FIG. 8, and FIG. 10 is an enlarged view of the main part of FIG. FIG. 11 is a cross-sectional view taken along line XI-XI in FIG.

  In the figure, the door hanger case 6 is provided with a hanger rail 31 extending parallel to the frontage direction of the hall entrance 1. The hanger rail 31 has a fixed rail 32 fixed to the door hanger case 6 and a movable rail 33 that can move up and down.

  The fixed rail 32 is supported by the door hanger case 6 via a plurality of rail supports 34 arranged at intervals in the longitudinal direction. On the upper side of the fixed rail 32, a plurality of recesses 32a (the same number as the hanger rollers 20) are provided. The recess 32a is located directly below the hanger roller 20 when the door is closed. The thickness of the fixed rail 32 is a little less than half the thickness of the movable rail 33.

  The movable rail 33 is disposed so as to overlap the surface of the fixed rail 32 on the door hanger case 6 side. Further, the movable rail 33 can be displaced between a normal position (FIG. 8) that closes the recess 32a when viewed from the front and a lowered position (FIG. 9) below the normal position. Between the longitudinal end of the movable rail 33 and the door hanger case 6, an auxiliary lever 35 that is swung with the displacement of the movable rail 33 is connected. A plurality of steadying members 36 that are in contact with the movable rail 33 are fixed to the door hanger case 6. This prevents the hanger rail 31 from swinging in the direction perpendicular to the front of the door panel 18 (the left-right direction in FIG. 11).

  The rail side shaft 13 of the drive lever 11 is connected to the central portion in the longitudinal direction of the movable rail 33. The movable rail 33 is displaced by the driving force of the rail drive motor 14. When the movable rail 33 is displaced to the lowered position when the door is closed, the hanger roller 20 is dropped into the recess 32 a as shown in FIG. 9, and the lower end of the door body 17 is the upper surface of the landing sill 5. The gap between the lower end of the door body 17 and the landing threshold 5 is shielded. Other configurations are the same as those in the first embodiment.

  Next, the operation will be described. When the occurrence of a fire is detected by a fire detector or the like installed in the building, it is confirmed on the control panel whether each landing door device is in a closed state. When the door is closed, a lowering command signal is output from the control panel to the landing door device. Thereby, the rail drive motor 14 is driven, the movable rail 33 is displaced to the lowered position, and the door body 17 is lowered accordingly. And the clearance gap between the lower end part of the door main body 17 and the upper surface of the landing threshold 5 is shielded. When the landing door device is in the door open state, the descent command signal is output after waiting for the door door to be closed.

  Thus, according to the landing door device of the second embodiment, the gap at the lower end of the door body 17 can be more reliably shielded when necessary. Thereby, smoke insulation and sound insulation can be improved. Further, during normal operation, the movable rail 33 is in the normal position, and the lower end portion of the door body 17 is separated from the landing sill 5, so that the opening / closing operation performance of the door body 17 during normal operation is maintained.

In the landing door device of the second embodiment, as in the first embodiment, a heat-resistant elastic member may be fixed to the lower end portion or the floor portion of the door body.
In the landing door device according to the second embodiment, an upper shielding member may be provided at the upper end portion of the door main body, and a side shielding member may be provided at the door bag side end portion of the door main body.
Furthermore, the smoke shielding structure between the door body and the upper frame and the vertical frame is not limited to the above example, and various modifications can be made.

  Furthermore, in FIG. 9, the hanger roller 20 is not displaced to the bottom of the recess 32 a, but the hanger roller 20 is displaced only until the lower end of the door body 17 contacts the upper surface of the landing sill 5. It is not necessary to reach up to. In other words, it is desirable that the depth of the concave portion 32a be larger (for example, about 10 mm) than the gap dimension (usually about 6 mm) between the lower end portion of the door body 17 and the upper surface of the landing sill 5 at normal times. .

In the second embodiment, the movable rail 33 is moved up and down obliquely by swinging the drive lever 11, but the driving force of the rail drive motor is directly transmitted to the movable rail to move the movable rail vertically up and down. May be.
Furthermore, in the second embodiment, the movable rail 33 is displaced in both the upper and lower directions by the rail drive motor 14, but only the displacement of the movable rail to the lowered position is automatically performed by a displacement means such as a rail drive motor. The return to the position may be performed manually by an operator, for example.

  In the first and second embodiments, the rail drive motor 14 is automatically driven in response to a signal from a fire detector or the like. For example, the rail drive motor 14 is driven by a switch pressed by an administrator or the like. You may make it do. Further, it is possible to always displace the door body downward when the door is closed.

In the first and second embodiments, the center opening type door device is shown, but the present invention can also be applied to a single opening type door device. Further, the number of door bodies is not limited to two.
Furthermore, although Embodiment 1 and 2 showed about the landing door apparatus, this invention is applicable also to a car door apparatus, and can improve the light-shielding property and smoke shielding property between a cage interior and the exterior.

It is a rear view which shows the elevator landing door apparatus by Embodiment 1 of this invention. It is a rear view which shows the state which the door main body of FIG. 1 lowered | hung. It is sectional drawing which follows the III-III line of FIG. It is a rear view which expands and shows the principal part of FIG. It is a side view which shows the principal part of FIG. It is sectional drawing which follows the VI-VI line of FIG. It is sectional drawing which follows the VII-VII line of FIG. It is a rear view which shows the landing door apparatus of the elevator by Embodiment 2 of this invention. FIG. 9 is a rear view showing the lowered state of FIG. 8. It is a rear view which expands and shows the principal part of FIG. It is sectional drawing which follows the XI-XI line of FIG.

Explanation of symbols

  1 landing doorway, 3 vertical frame, 4 upper frame, 8, 31 hanger rail, 17 door body, 14 rail drive motor (displacement means), 20 hanger roller, 24 heat resistant elastic member, 25 upper shielding member, 26 side shielding member, 32 fixed rail, 32a recess, 33 movable rail.

Claims (5)

A hanger rail provided above the doorway and displaceable from a normal position located at a normal time to a lowered position below the normal position,
A door body that is suspended from the hanger rail and moves along the hanger rail to open and close the doorway; and a displacement means for displacing the hanger rail from the normal position to the lowered position. By displacing the hanger rail to the lowered position, the lower end portion of the door body comes into contact with the floor portion of the doorway, and the gap between the lower end portion of the door body and the floor portion is shielded. An elevator door device. A fixed rail that is fixed above the entrance and has a plurality of recesses on the upper side, and is arranged so as to overlap the fixed rail, and is located below the normal position from a normal position that closes the recess when viewed from the front. A hanger rail having a movable rail displaceable to a lowered position,
A hanger roller that is suspended from the hanger rail and rolls on the hanger rail, moves along the hanger rail, opens and closes the door, and displaces the movable rail from the normal position to the lowered position. Displacement means is provided, and when the door is closed, the movable rail is displaced to the lowered position, whereby the hanger roller is dropped into the recess, and the lower end of the door body is placed on the floor of the doorway. An elevator door device, wherein the door device is in contact with the lower end portion of the door body and the floor portion so as to be shielded.   The elevator door device according to claim 1 or 2, wherein a heat-resistant elastic member is provided on at least one of the lower end portion of the door body and the floor portion.   An upper frame is fixed to the upper part of the doorway, and the door main body abuts on the upper frame when the door main body is moved downward to form a gap between the door main body and the upper frame. The elevator door device according to any one of claims 1 to 3, wherein an upper shielding member for shielding is provided.   A vertical frame is fixed to the side portion of the doorway, and the doorcase side end portion of the door main body is in contact with the vertical frame when the door is closed, and the doorcase side end portion of the door main body and the vertical portion of the door main body. The elevator door apparatus according to any one of claims 1 to 4, further comprising a side shielding member that shields a gap between the frame and the frame.

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