JP5523554B2 - Elevator car door device - Google Patents

Description

  The present invention relates to an elevator car door device that requires sound insulation of a car such as an ultra-high speed elevator installed in a high-rise building, for example.

  In an elevator installed in a high-rise building, the ascending / descending speed of the car reaches several hundred meters per minute, and the wind noise generated around the moving car becomes very large. For this reason, measures are taken to prevent the generation of wind noise as much as possible and to suppress the generated wind noise from flowing into the car room.

  In order to suppress the generation of wind noise, there are methods of smoothing the airflow by, for example, making the shape of the cab with less unevenness or installing streamline covers above and below the cab. In addition, in conventional elevators, in order to suppress the flow of wind noise into the car room, close contact members are provided above and below the car doorway and above and below the door panel. When the door panel is closed, the close contact members are in close contact with each other. Thus, the gap around the car door is closed (see, for example, Patent Document 1).

  Further, in other conventional elevators, the car door is provided with a closing device that is displaced in the vertical direction, and when the car door is fully closed, the gap between the car door and the car sill is closed by the closing device ( For example, see Patent Document 2).

JP-A-10-120349 JP 2003-306286 A

  In the conventional elevator as shown in Patent Document 1, it is necessary that the close contact members simultaneously come in contact with the upper and lower sides of the car doorway when the door is closed, and very high workability and installation are required. In addition, if the door is not closed by a very large door closing force, it is difficult to bring the contact members into close contact with each other above and below the car doorway, so the load on the door motor increases.

  Furthermore, the door rail that suspends the car door and the drive device that opens and closes the car door are attached to the upper part of the car frame, but the car room is supported on the lower part of the car frame via anti-vibration rubber, When a large number of passengers get into the car room, the car room may sink about 2 to 3 mm from the car frame. This widens the gap between the car door and the car sill, and the seal member provided at the lower part of the car door may not come into contact with the car sill.

  As a means for solving this problem, there is a closing device as shown in Patent Document 2, but the configuration is complicated and there is a concern that the weight of the car door may increase. Also, in the unlikely event that a passenger is trapped in a car room due to a power failure or the like, since a pressing force is generated from the closing device toward the car sill, a large resistance is generated when the car door is manually opened.

  Furthermore, in an elevator equipped with a barometric pressure control device for relieving the feeling of ear blockage due to sudden pressure fluctuations, a pressure difference equivalent to 1000 Pa occurs inside and outside the car room because pressure is increased and decreased while the car is running. Thus, for example, when the car doorway is 2 square meters, the car door receives a force of 2000N. Further, since the direction of receiving the force differs depending on whether the pressure is applied or the pressure is reduced, the car door undergoes minute fluctuations in both the front and rear directions.

  Therefore, in elevators that require high sound insulation performance, such as ultra-high speed elevators, the car doors can be protected against vertical displacement of the car room with respect to the car frame and displacement of the car door in the front-rear direction by the atmospheric pressure control device. It is required that the gap between the lower part of the car and the car sill be kept closed, and that a large resistance is not generated when the car door is manually opened.

  The present invention has been made to solve the above-described problems, and is high with respect to the vertical displacement of the cab relative to the car frame and the longitudinal displacement of the car door panel with a simple configuration. An object of the present invention is to provide an elevator car door device that can maintain sound insulation performance, can suppress an increase in the load on the door motor, and can prevent large resistance when manually opening the car door. And

  An elevator car door device according to the present invention includes a car door panel that opens and closes a car doorway, and a car sill that is provided at a lower portion of the car doorway and includes first and second sill grooves provided along the opening and closing direction of the car door panel. The door leg is provided in the lower part of the car door panel and is inserted in the first sill groove, and is provided in the lower part of the car door panel so as to contact the side surface of the first sill groove. A first seal member made of an elastic body that slides along the side surface of the sill groove and a lower part of the car door panel so as to be in contact with the side surface of the second sill groove. A second seal member made of an elastic body is provided that is slid along the side surface of the sill groove.

  The elevator car door device according to the present invention includes a first seal member that is provided with a second sill groove in the car sill in addition to the first sill groove into which the door leg is inserted, and is in contact with a side surface of the first sill groove. And the second seal member in contact with the side surface of the second sill groove at the lower portion of the car door panel, the vertical displacement of the car room relative to the car frame is the first and second seals with a simple structure. Absorbed by sliding the member in the vertical direction, the displacement of the car door panel in the front-rear direction can be absorbed by the elastic deformation of the first and second sealing members, thereby maintaining high sound insulation performance. . Further, since the first and second sealing members are slid along the side surfaces of the first and second sill grooves when the car door panel is opened and closed, a large door closing force is not required, and the load of the door motor is increased. Moreover, when the car door is manually opened, a great resistance is not generated.

It is a front view which shows the elevator car door apparatus by Embodiment 1 of this invention. It is sectional drawing which follows the II-II line | wire of FIG.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
Embodiment 1 FIG.
1 is a front view showing an elevator car door apparatus according to Embodiment 1 of the present invention. In the figure, a car doorway 1a is provided in front of a car 1 (indicated by a two-dot chain line). The car doorway 1 a is opened and closed by a pair of car doors 2. Each car door 2 has a car door panel 3 and a door hanger 4 connected to the upper part of the car door panel 3. Each door hanger 4 is provided with a pair of hanger rollers 5.

  A door rail 6 is fixed to the upper part of the car entrance 1 a of the car 1. The door panel 3 is suspended from the door rail 6 via a door hanger 4. When the car door 2 is opened and closed, the hanger roller 5 is rolled on the door rail 6.

  A door motor 7 that opens and closes the car door 2 is mounted on the top of the car 1. The driving force of the door motor 7 is transmitted to the car door panel 3 through the speed reduction mechanism 8 and the link mechanism 9. The left and right car doors 2 are simultaneously opened and closed in the opposite direction in conjunction with the link mechanism 9. The landing door (not shown) is opened and closed together with the car door 2 by engaging with the car door 2.

  A car threshold 10 that guides the movement of the lower end of the car door panel 3 when the car door 2 is opened and closed is fixed to the lower part (floor part) of the car doorway 1a.

  FIG. 2 is a cross-sectional view taken along line II-II in FIG. 1 and shows a vertical cross section of the lower end portion of the car door panel 3. In FIG. 2, the right side of the car door panel 3 is the cab side, and the left side is the landing side. The car sill 10 is provided with first and second sill grooves 11, 12 provided along the opening / closing direction of the car door panel 3 at intervals. The second threshold groove 12 is arranged on the landing side of the first threshold groove 11.

  The first sill groove 11 has a first cab side surface 11a, a first landing side surface 11b, and a first bottom surface 11c. The second sill groove 12 has a second cab side surface 12a, a second landing side surface 12b, and a second bottom surface 12c. The depth of the second threshold groove 12 is the same as the depth of the first threshold groove 11. Further, the first and second sill grooves 11 and 12 are arranged directly below the car door panel 3 within the range of the thickness of the car door panel 3.

  Inside the car door panel 3, a plurality of sound absorbing members 13a to 13d are fixed.

  A lower reinforcing member 14 is fixed to the lower portion of the car door panel 3. The lower reinforcing member 14 is provided over the entire width direction of the car door panel 3 (left and right direction in FIG. 1). Further, the lower reinforcing member 14 has a joint portion 14 a bonded or welded to the back surface of the car door panel 3 and a leg mounting portion 14 b facing the back surface of the lower end portion of the car door panel 3. The joint portion 14a and the leg attachment portion 14b are formed by bending a flat plate.

  A plurality of door legs 15 are screwed to the leg attachment portion 14b at intervals in the width direction of the car door panel 3. The door leg 15 is inserted into the first threshold groove 11. During the opening / closing operation of the car door panel 3, the door leg 15 is moved in the first sill groove 11. Thereby, rattling or the like during the opening / closing operation of the car door panel 3 is suppressed.

  A plurality of first seal members 17 are attached to the leg attachment portion 14b via the first presser fitting 16. The first presser fitting 16 is screwed to the leg mounting portion 14b. The upper end portion of the first seal member 17 is sandwiched between the first presser fitting 16 and the leg attachment portion 14b. The first seal member 17 is provided in the entire width direction of the car door panel 3 excluding a portion where the door leg 15 is attached.

  The first seal member 17 is made of an elastic body such as rubber, and its lower end is in contact with the first cab side surface 11a and is elastically deformed minutely. Thus, the first seal member 17 is slid along the first car room side surface 11a when the car door panel 3 is opened and closed.

  A fixing member 18 having an L-shaped cross section is fixed to the back surface of the joint portion 14a of the lower reinforcing member 14 by adhesion or welding. The fixing member 18 has a horizontal portion 18a. A mounting bracket 20 is attached to the horizontal portion 18a with screws 19. The screw 19 is tightened vertically from the upper surface side of the mounting bracket 20.

  A sound insulating plate 21 and a second presser fitting 22 are screwed to the mounting bracket 20. The lower end of the sound insulating plate 21 is inserted into the second threshold groove 12. The sound insulating plate 21 is made of steel and is continuously provided over the entire width direction of the car door panel 3.

  A second seal member 23 is sandwiched between the second presser fitting 22 and the sound insulating plate 21. The second seal member 23 is continuously provided over the entire width direction of the car door panel 3.

  The second seal member 23 is made of an elastic body such as rubber, and its lower end is in contact with the second landing side surface 12b and is elastically deformed minutely. Thus, the second seal member 23 is slid along the second landing side surface 12b when the car door panel 3 is opened and closed.

  A back plate (cover) 24 is attached to the lower reinforcing member 14 so as to face the mounting bracket 20 and the second pressing bracket 22. The back plate 24 is provided continuously over the entire width direction of the car door panel 3, and is attached to the vicinity of the upper end portion of the lower reinforcing member 14 with a plurality of screws 25.

  In such a car door device, in addition to the first sill groove 11 into which the door leg 15 is inserted, a second sill groove 12 is provided in the car sill 10, and the first sill is in contact with the first cab side 11a. Since the second seal member 17 and the second seal member 23 in contact with the second landing side surface 12b are provided in the lower part of the car door panel 3, the vertical displacement of the car room relative to the car frame can be reduced with a simple configuration. The first and second seal members 17 and 23 are absorbed by sliding in the vertical direction, and the displacement of the car door panel 3 in the front-rear direction (the left-right direction in FIG. 2) It can be absorbed by elastic deformation, thereby maintaining a high sound insulation performance.

  Moreover, since the 1st and 2nd sealing members 17 and 23 are slid along the side surfaces 11a and 12b of the 1st and 2nd sill grooves 11 and 12 at the time of opening / closing operation | movement of a car door panel, big door closing force Is not necessary, and an increase in the load of the door motor 7 can be suppressed. Further, when the car door 2 is manually opened, a large resistance is not generated.

  Further, the first seal member 17 contacts the first cab side surface 11a, and the second seal member 23 contacts the second landing side surface 12b. 3), when the car room is pressurized or depressurized, at least one of the first and second seal members 17, 23 is in contact with the car sill 10 with respect to the longitudinal displacement of the car door 2. Can be maintained, and high sound insulation performance can be maintained.

Furthermore, since the sound insulating plate 21 inserted into the second sill groove 12 is used, the sound insulating property can be further improved.
The first seal member 17 is provided in the entire width direction of the car door panel 3 except for the portion where the door legs 15 are attached. The second seal member 23 and the sound insulating plate 21 are provided in the car door panel. 3, the sound insulation can be further improved while avoiding interference between the door leg 15 and the first seal member 17.

  Further, when the first and second seal members 17 and 23 are worn due to repeated opening and closing operations of the car door 2, the screw 25 is removed and the back plate 24 is removed to fix the second presser bracket 22. The exposed screw can be exposed, and the second seal member 23 can be easily replaced. Further, from this state, by removing the screw 19 and removing the mounting bracket 20, the screw fixing the first pressing bracket 16 can be exposed, and the first seal member 17 can be easily replaced. Can do.

The first seal member 17 may be provided continuously in the entire width direction of the car door panel 3 as long as the first seal member 17 does not interfere with the door legs 15.
Further, the first presser fitting 16, the first seal member 17, the second presser fixture 22, the second seal member 23, the sound insulating plate 21, and the like may be appropriately divided in the width direction of the car door panel 3.

Further, in the above example, the first seal member 17 is in contact with the first cab side surface 11a and the second seal member 23 is in contact with the second landing side surface 12b. 17 may be in contact with the first landing side surface 11b, and the second seal member 23 may be in contact with the second cab side surface 11a.
Furthermore, two first seal members 17 are used, or the lower end portion of the first seal member 17 is branched in two directions, and the first seal member 17 is connected to the first cab side surface 11a and the first side. You may make it contact | connect both the boarding side surface 11b. Similarly, the second seal member 23 may be in contact with both the second cab side surface 12a and the second landing side surface 12b.

Further, in the above example, the door leg 15 is inserted into the sill groove 11 on the cab side, and the sound insulating plate 21 is inserted into the sill groove 12 on the landing side. That is, the landing side may be the first threshold groove 11 and the cab side may be the second threshold groove 12.
Furthermore, in the above example, a two-door central opening type car door device is shown, but the type of the car door device is not limited to this.
Furthermore, the elevator to which the car door device of the present invention is applied is not limited to an ultra-high speed elevator, and sound insulation can be enhanced even when applied to a normal elevator.

Claims (3)

Car door panel that opens and closes the car doorway,
A car sill having first and second sill grooves provided at a lower portion of the car doorway and provided along an opening / closing direction of the car door panel;
A door leg provided at a lower portion of the car door panel and inserted into the first sill groove;
A first elastic body is provided at a lower portion of the car door panel so as to be in contact with a side surface of the first sill groove, and is slid along a side surface of the first sill groove when the car door panel is opened and closed. A seal member and an elastic body that is provided at a lower portion of the car door panel so as to be in contact with a side surface of the second sill groove and is slid along the side surface of the second sill groove when the car door panel is opened and closed. A second seal member ,
The side surface with which the first seal member is in contact is either one of the side surface on the cab side and the landing side of the first sill groove,
The side surface with which the second seal member contacts is an elevator car door device that is the other side surface of the second sill groove on the cab side and the landing side .   The elevator car door device according to claim 1, further comprising a sound insulating plate provided at a lower portion of the car door panel and inserted into the second sill groove. The first seal member is provided in the entire width direction of the car door panel excluding a portion to which the door leg is attached,
3. The elevator car door device according to claim 2, wherein the second seal member and the sound insulating plate are provided in the entire width direction of the car door panel.

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