HK1209406A1

HK1209406A1 - Elevator door operator

Info

Publication number: HK1209406A1
Application number: HK15110221.3A
Authority: HK
Inventors: 染田雅弘; 柏倉寬; 柏仓宽
Original assignee: Fujitec Co., Ltd.
Priority date: 2014-03-05
Filing date: 2015-10-19
Publication date: 2016-04-01
Also published as: CN104891315A; JP2015168493A; JP6229943B2; CN104891315B

Abstract

The invention relates to an elevator door opening and closing device which can reliably block smoke of a doorsill under the condition that a flat doorsill is adopted. The elevator door opening and closing device has a door and the doorsill for guiding the door in the opening and closing direction. The doorsill has a groove part for guiding the door. The groove part is configured to be opened downward. The door has a guidance part clamped in the groove part and for guiding the door. The elevator door opening and closing device also has a smoke blocking member which is clung to the inside part of the groove part, thus the smoke is prevented from passing at the inside and outside direction of the door from the groove part.

Description

Elevator door opening and closing device

Technical Field

The present invention relates to an elevator door opening and closing device having a smoke blocking function.

Background

A general elevator includes, in a hoistway: the elevator comprises a car, a guide rail for the car for guiding the car, a balance weight, a guide rail for the balance weight, a rope for connecting the car and the balance weight, and a tractor.

The elevator drives a rope by a hoist, thereby moving a car up and down along a guide rail for the car and moving a counterweight up and down along a guide rail for the counterweight.

The car can move up and down in the hoistway and can stop at a landing position provided at each floor of the building. The car has a car side door opening/closing device. A landing side door opening/closing device is provided at the landing position corresponding to the car side door opening/closing device.

As a landing side door opening/closing device, there is known one including: an inlet and outlet frame arranged at the inlet and outlet communicated with the lifting channel from the lifting position; a door configured to be freely opened and closed; a threshold disposed below the door and guiding the door in an opening and closing direction (see patent document 1).

In this door opening and closing device, a groove portion for guiding the door is formed on the upper surface of the rocker so as to open upward. A guide block (guide portion) fitted into the groove portion is provided at a lower portion of the door. Thereby, the door is configured to be capable of reciprocating along the groove portion.

In order to prevent smoke from entering the boarding and alighting area, a smoke blocking member is provided at the lower portion of the door. Since the guide block and the smoke blocking member of the landing side door opening/closing device are fitted into the groove portion of the rocker, the lower smoke blocking can be performed reliably.

In the case of the conventional door opening and closing device as described above, since the groove portion is formed on the upper surface of the rocker, when foreign matter such as dust enters the groove portion, the opening and closing of the door is hindered, and the smoke shielding function of the smoke shielding member is lowered.

In order to solve this problem, there is known a door opening and closing device in which a groove portion is formed on the lower surface side of a rocker, and a guide block is fitted into the groove portion (see patent document 2). With this design, the upper surface of the rocker is formed flat without forming a groove. Such a threshold is generally referred to as a "flat threshold" (flat sill).

Documents of the prior art

Patent document

Patent document 1: japanese unexamined patent publication No. 2012-91895

Patent document 2: japanese laid-open patent publication No. 2013-151371

Disclosure of Invention

Even when a flat sill is used for the side door opening/closing device at the boarding/landing place, it is necessary to perform an appropriate smoke shielding measure. In the conventional door opening and closing device, there is no device which provides a proper smoke shielding function to the flat threshold.

Therefore, an object of the present invention is to provide an elevator door opening and closing device capable of reliably blocking smoke when a flat threshold, that is, a threshold having a groove portion that opens downward is used.

The invention provides an elevator door opening and closing device, which comprises a door and a threshold guiding the door in the opening and closing direction. The threshold has a groove portion for guiding the door. The groove is configured to open downward. The door has a guide portion that engages with the groove portion and guides the door. The elevator door opening and closing device further comprises a smoke blocking member which is in close contact with an inner portion of the groove portion, thereby preventing smoke from passing through the groove portion in the door inward and outward directions.

According to this configuration, the smoke blocking member is brought into close contact with the portion inside the groove portion opened downward, and the guide portion is fitted into the groove portion, whereby smoke can be prevented from passing through the groove portion in the inside-outside direction of the door, and thus smoke can be reliably blocked.

According to the present invention, it is preferable that the smoke shielding member is made of an elastic body and is brought into close contact with an inner portion of the groove portion by elastic deformation.

According to the present invention, it is preferable that the elevator door opening and closing device has a support member supporting the smoke blocking member, the support member being fixed to a lower portion of the door.

According to the present invention, it is preferable that a support portion for supporting the guide portion is provided, and the smoke shielding member is supported by the support portion.

According to the present invention, it is preferable that in the elevator door opening and closing device, a unit including a guide portion and a support portion is disposed at each of both end portions in the door width direction, and the smoke blocking member is disposed between the units.

According to the present invention, it is preferable that the elevator door opening and closing device further includes a contact portion that contacts an inner portion of the groove portion, and the contact portion is arranged to be in surface contact with the inner portion of the groove portion.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present invention, even when a flat threshold, that is, a threshold having a groove portion opening downward is used, smoke can be reliably blocked.

Drawings

Fig. 1 is a perspective view showing the entire structure of an elevator.

Fig. 2 is a side view showing a landing side door opening/closing device and a car side door opening/closing device of an elevator.

Fig. 3 is a front view of a door in the side door opening/closing device at the boarding/alighting place.

Fig. 4 is an enlarged front view showing a lower portion of the door.

Fig. 5 is a view in line V-V of fig. 4.

Fig. 6 is a view in line VI-VI of fig. 4.

Fig. 7 is a cross-sectional side view showing another example of the smoke shielding member.

Fig. 8 is a cross-sectional side view showing another example of the smoke shielding member.

Fig. 9 is a cross-sectional side view showing another example of the smoke shielding member.

Fig. 10 is a cross-sectional side view showing another example of the smoke shielding member.

Detailed Description

Embodiments for carrying out the present invention will be described below with reference to fig. 1 to 10. Fig. 1 is a perspective view showing the entire structure of an elevator. Fig. 1 illustrates a so-called machine roomless elevator without a machine room.

As shown in fig. 1, an elevator includes, in a hoistway 1: a car 2, a first guide rail 3 for guiding the car 2, a counterweight (counterweight) 4, a second guide rail 5 for guiding the counterweight 4, a rope 6 for connecting the car 2 and the counterweight 4, and a hoisting machine 7.

A return pulley 8 for winding the rope 6 is disposed above the hoistway 1. The lower part of the lifting channel 1 is also provided with: a control panel 9 for controlling the hoisting machine 7, a governor 10 for adjusting the speed of the elevator, and a buffer 11.

The elevator is configured such that the car 2 can be moved up and down along the first guide rail 3 by driving the hoisting machine 7 through the control panel 9. The hoisting machine 7 has a traction sheave 12, and can move the car 2 up and down by driving the ropes 6 via the traction sheave 12.

Since the counterweight 4 is connected to the car 2 via the rope 6, the counterweight 4 moves vertically along the second guide rail 5 in the opposite direction to the movement of the car 2 in accordance with the vertical movement of the car 2. Since the counterweight 4 is coupled to the car 2, the hoisting machine 7 can move the car 2 up and down with a small amount of power. The governor 10 can stop the car 2 when the vertical movement speed of the car 2 becomes equal to or higher than a predetermined speed. The buffer 11 can alleviate the impact when contacting the car 2.

The car 2 can move up and down in the hoistway 1 and can stop at a landing place 13 provided at each floor of the building. As shown in fig. 2, the car 2 has a car side door opening/closing device 14. The boarding/alighting place 13 is provided with a boarding/alighting place side door opening/closing device 15 corresponding to the car side door opening/closing device 14. Fig. 2 shows a so-called center-split type door opening/closing device as an example of the door opening/closing devices 14 and 15.

As shown in fig. 2 and 3, the car side door opening/closing device 14 includes a plurality of (e.g., two) doors 14A and a rocker 14B. The door 14A is supported by an upper frame 16, and the upper frame 16 is integrally provided on the upper portion of the car 2. The upper frame 16 is provided with a door rail 17 for guiding the door 14A. A door hanger 18 supported on the door rail 17 is provided at an upper portion of the door 14A. The door hanger 18 is provided with a plurality of rollers 19 that engage with the door rail 17. The door 14A is configured to move in the opening and closing direction via a drive mechanism, not shown, in a state where the roller 19 of the door hanger 18 is engaged with the door rail 17.

The rocker 14B is supported by a lower frame 20 provided at a lower portion of the car 2. The rocker 14B has a groove 21 for guiding the door 14A. The groove 21 is formed in the upper surface of the rocker 14B and is configured to open upward. A guide portion (guide block) 22 provided at a lower portion of the door 14A is fitted into the groove portion 21. The groove 21 of the rocker 14B guides the guide portion 22 in the opening/closing direction of the door 14A in accordance with the movement of the door 14A.

As shown in fig. 2 to 4, the landing side door opening/closing device 15 includes a plurality of (e.g., two) doors 15A and a rocker 15B. The door 15A is supported by a frame 26 provided at the boarding/alighting place 13. The frame 26 is provided with a frame 27 for supporting the upper portion of the door 15A. A door rail 28 for guiding the door 15A is provided on the frame 27. A door hanger 29 is provided on the upper portion of the door 15A. The door hanger 29 is provided with a plurality of rollers 30 engaged with the door rail 28. The door 15A is configured to move in the opening and closing direction by engaging the roller 30 of the door hanger 29 with the door rail 28 and with the drive mechanism (not shown) for driving the car side door opening and closing device 14.

The rocker 15B is supported by a support frame 31 provided on a wall surface of the hoistway 1. In addition to the rocker 15B, the support frame 31 supports a protective member 32, and the protective member 32 prevents toes of a user of the elevator from being caught by a portion of the lower side of the rocker 15B. As shown in fig. 5, the rocker 15B and the protective member 32 are fixed to the support frame 31 by a fastening mechanism including a bolt 33 and a nut 34.

As shown in fig. 3 to 5, a groove 35 for guiding the door 15A is formed in a lower portion of the rocker 15B. The groove 35 is formed linearly along the longitudinal direction of the rocker 15B. The rocker 15B is a flat rocker configured such that the groove portion 35 opens downward.

The door 15A has: a guide portion (guide block) 36 that engages with the groove portion 35 and guides the door 15A; a support portion (bracket) 37 for supporting the guide portion 36; a smoke shielding member 38 for preventing smoke from passing through the threshold 15B in the event of a fire; a support member 39 for supporting the smoke shielding member 38. As shown in fig. 4, the assembly of the guide portion 36 and the support portion 37 is disposed at the lower portion of the door 15A and at both ends (two positions) in the width direction of the door 15A. Further, the smoke shielding member 38 and the support member 39 are provided at the center portion in the width direction of the door 15A, that is, between the above components.

The guide portion 36 is an elastic body formed of a synthetic resin material such as rubber. The guide portion 36 is configured as an elongated plate member.

The support portion 37 is made of metal and has an elongated plate shape. The support portion 37 is formed into a predetermined shape by press-forming, for example. As shown in fig. 5, one end of the support portion 37 is fixed to the lower side surface of the door 15A via a mounting member 40. A guide portion 36 is integrally formed at the other end of the support portion 37. The vertical length L1 of the support portion 37 is longer than the gap C between the door 15A and the rocker 15B.

The smoke shielding member 38 is an elastic body formed of a synthetic resin material such as rubber. The smoke shielding member 38 has: a contact portion 41 that contacts an inner portion of the groove portion 35 of the rocker 15B; and a mounting portion 42 mounted on the support member 39.

The contact portion 41 is formed in a plate shape, and is positioned so as to be elastically deformed while being in contact with an inner portion of the groove portion 35. Also, preferably, the contact portion 41 is in surface contact with a part of the inner side of the groove portion 35. As shown in fig. 6, the contact portion 41 is disposed so as to protrude upward.

As shown in fig. 6, the mounting portion 42 is configured as a protrusion protruding in a direction opposite to the contact portion 41. The mounting portion 42 is configured such that the distal end portion is larger than the base portion.

As shown in fig. 6, the support member 39 is formed in an elongated plate shape by, for example, extrusion molding. One end of the support member 39 is fixed to the lower side surface of the door 15A. A mounting recess 43 to which the mounting portion 42 of the smoke shielding member 38 is mounted is formed at the other end portion of the support member 39. The front end of the mounting portion 42 of the smoke shielding member 38 is fitted into the mounting recess 43. The length L2 in the vertical direction of the support member 39 is longer than the gap C between the door 15A and the rocker 15B.

As shown in fig. 2, 5, and 6, the protection member 32 is supported by the support frame 31 via a support bracket 44. The protective member 32 is fixed to the support bracket 44 by a screw member 45. The protection member 32 has: a protecting portion 46 for protecting the toes of the user, and a fixing portion 47 fixed to the support bracket 44.

The protection portion 46 is configured as a protrusion portion protruding upward. The protective portion 46 has an opposing surface 46a that faces the rocker 15B. As shown in fig. 5 and 6, the facing surface 46a of the protecting portion 46 is formed as an inclined surface inclined at a predetermined angle with respect to the vertical direction.

The fixing portion 47 is plate-shaped and has an insertion hole 48 through which the screw member 45 can be inserted. As shown in fig. 5 and 6, the insertion hole 48 is a long hole that is long in the vertical direction. Thus, the vertical position of the protection member 32 can be adjusted within the range of the length of the insertion hole 48. The support bracket 44 is formed with a screw hole 44a to which the screw member 45 is screw-coupled.

According to the landing side door opening/closing device 15 of the elevator described above, the groove portion 35 formed in the lower portion of the rocker 15B is opened downward, the smoke blocking member 38 is brought into close contact with the inner portion of the groove portion 35, and the guide portion 36 is fitted into the groove portion 35, whereby smoke can be prevented from passing through the groove portion 35 in the door inner-outer direction. Therefore, even when a flat threshold is used for the side door opening/closing device 15 at the boarding/landing position, smoke can be reliably blocked.

When the smoke blocking member 38 is brought into close contact with the rocker 15B, it is also conceivable to block smoke by bringing the contact portion 41 into contact with the upper surface of the rocker 15B. However, in this case, the smoke blocking member 38 slides on the upper surface of the rocker 15B, and abrasion occurs. This leaves a trace of wear of the smoke shielding member 38 on the upper surface of the rocker 15B, which results in an unpleasant appearance. Further, the upper surface of the rocker 15B is always worn by the passage of the user, luggage, and the like. When the smoke shielding member 38 slides on the upper surface of the worn rocker 15B, the wear of the smoke shielding member 38 increases, and the life of the smoke shielding member 38 is shortened.

In the present invention, however, the smoke shielding member 38 is brought into close contact with the inner portion of the groove portion 35 formed in the lower portion of the rocker 15B, so that the wear trace of the smoke shielding member 38 is not exposed. Further, since the smoke shielding member 38 is in contact with the inner portion of the groove portion 35, and the inner portion of the groove portion 35 is not worn as much as the upper surface of the rocker 15B, the smoke shielding member 38 can be prevented from being deteriorated at an early stage, and a sufficiently long life can be ensured.

Further, the smoke blocking member 38 is made of an elastic body and is brought into close contact with the inner portion of the groove portion 35 by elastic deformation, so that smoke blocking of the rocker 15B can be performed more reliably. Further, since the support member 39 supporting the smoke shielding member 38 is fixed to the lower portion of the door, the smoke shielding member 38 can always maintain the smoke shielding while following the movement of the door 15A.

The elevator door opening/closing device of the present invention is not limited to the structure of the above-described embodiment. The elevator door opening/closing device of the present invention is not limited to the above-described operation and effects. The elevator door opening and closing device of the present invention can be variously modified within a scope not departing from the gist of the present invention.

For example, the smoke shielding member 38 is not limited to the example shown in fig. 6. For example, as shown in fig. 7, the smoke shielding member 38 may be supported by a support portion 37 that supports the guide portion 36 without using the support member 39. In this way, the number of components of the landing side door opening/closing device 15 can be reduced, and cost reduction can be achieved.

As shown in fig. 8, the smoke shielding member 38 may have a linear contact portion 41 and a linear attachment portion 42. In this case, the contact portion 41 is inclined at a predetermined angle with respect to the mounting portion 42. As shown in fig. 9, the contact portion 41 of the smoke shielding member 38 may be configured as a member having a circular cross section. As shown in fig. 10, the contact portion 41 of the smoke shielding member 38 may be formed in a tubular shape.

In the above-described embodiment, the example in which the present invention is applied to the boarding/alighting side door opening/closing device 15 is shown, but the present invention can also be applied to the car side door opening/closing device 14.

In the above-described embodiment, the center-split type door opening/closing devices 14 and 15 are exemplified, but the present invention is not limited to this, and can be applied to a side-open type door opening/closing device.

Description of the reference numerals

1 … hoistway, 2 … car, 3 … first guide rail, 4 … counterweight, 5 … second guide rail, 6 … rope, 7 … traction machine, 8 … return wheel, 9 … control panel, 10 … governor, 11 … buffer, 12 … traction sheave, 13 … landing, 14 … car side door opening and closing device, 14a … door, 14B … door sill, 15 … landing side door opening and closing device, 15a … door, 15B … door sill, 16 … upper frame, 17 … door rail, 18 … door hanger, 19 … roller, 20 … lower frame, 21 … slot, 22 … guide, 26 … frame, 27 … frame, 28 … door rail, 29 … door hanger, 30 … roller, 31 … support frame, 32 … protection component, 33 …, bolt 3634, … nut, … support component, … contact with smoke shielding component, 3639 mounting component, …, 42 … mounting part, 43 … mounting recess, 44 … supporting bracket, 44a … threaded hole, 45 … threaded part, 46 … protection part, 46a … opposite surface, 47 … fixing part and 48 … insertion hole.

Claims

1. An elevator door opening and closing device is provided with: door and with the threshold that door carries out the guide in the opening and closing direction, its characterized in that:

the doorsill has a groove portion for guiding the door, the groove portion is configured to open downward,

the door has a guide portion engaged in the groove portion and guiding the door,

the door further includes a smoke blocking member that is brought into close contact with an inner portion of the groove portion, thereby preventing smoke from passing through the groove portion in the inward and outward directions of the door.

2. The elevator door opening and closing device according to claim 1, wherein:

the smoke shielding member is made of an elastic body and is brought into close contact with the inner portion of the groove portion by elastic deformation.

3. The elevator door opening and closing device according to claim 1 or 2, wherein:

there is a support member for supporting the smoke barrier member, the support member being fixed to a lower portion of the door.

4. The elevator door opening and closing device according to claim 1 or 2, wherein:

the smoke shielding member has a support portion for supporting the guide portion, and the smoke shielding member is supported by the support portion.

5. The elevator door opening and closing device according to claim 4, wherein:

the units formed by the guide portion and the support portion are disposed at both ends in the door width direction, respectively, and the smoke blocking member is disposed between the units.

6. The elevator door opening and closing device according to claim 1 or 2, wherein:

the smoke shielding member has a contact portion that is in contact with an inner portion of the groove portion, and the contact portion is arranged so as to be in surface contact with the inner portion of the groove portion.