DESCRIPTION
Title of Invention
ELEVATOR APPARATUS
5
Technical Field
[0001]
The present invention relates: to an elevator
apparatus to carry a passenger or a package; and in
10 particular to an elevator apparatus having an opening and
closing door for platform installed at an elevator platform.
Background Art
[0002]
15 An opening and closing door for platform (hereunder
described merely as an opening and closing door) through
which a passenger comes in and out is installed at a gateway
of an elevator apparatus at an elevator platform. In
general, the opening and closing door is configured by:
20 installing two doors so as to overlap; and closing a gateway
by shifting one door until it touches an end surface of the
gateway on the closing side and shifting the other door up
to a halfway position when the opening and closing door is
closed. Then when the opening and closing door is opened,
25 the gateway is fully opened by: shifting the one door and
3
the other door up to the end surface of the gateway on the
opening side; and overlapping the one door and the other
door to each other in the state. Such an opening and
closing door is called an opening and closing door of a twoleaved
5 single-swing type.
[0003]
Further as another case, there is a case where, in the
state of closing two opening and closing doors, side end
surfaces of them face and touch each other in the center.
10 When the opening and closing doors open therefore, the two
opening and closing doors open by shifting in the manner of
separating in the right and left directions from the center.
As a result, the two opening and closing doors do not
overlap each other when they open unlike the opening and
15 closing door of the two-leaved single-swing type stated
earlier. Such an opening and closing door is called an
opening and closing door of a two-leaved center-swing type.
[0004]
Meanwhile, opening and closing doors are configured so
20 as to fully close in order to prevent flames and hot air
from intruding into a hoistway when a fire breaks out in a
building but flames and hot air may sometimes intrude into a
hoistway through gaps between a building and opening and
closing doors. Then the intruding flames and hot air may
25 sometimes reach hanger rails and hanger rollers installed in
4
order to suspend opening and closing doors and shift the
opening and closing doors smoothly.
[0005]
The hanger rails extend in the directions in which the
opening and closing doors shift and are 5 fixed to the upper
part of the hoistway above the platform gateway in the
building with bolts or the like. Then the hanger rollers
installed in door hangers fixed to the opening and closing
doors roll over rails formed at the upper parts of the
10 hanger rails and shift the opening and closing doors
smoothly. Then a buffer material comprising a synthetic
resin such as an urethane resin or a nylon resin is
installed over the rolling surfaces of the hanger rollers
and the configuration is arranged so as to: alleviate impact
15 between the hanger rollers and the rail surfaces of the
hanger rails; and inhibit sifting sounds and vibrations
accompanying the shift of the opening and closing doors.
[0006]
The buffer material may sometimes melt by flames or
20 hot air, however, because it comprises a synthetic resin and
the melting buffer material drops directly into a hoistway.
On this occasion, if a passenger cage is located on the
lower side, the melting buffer material may drop onto the
passenger cage and get fire undesirably. Otherwise, even
25 when a passenger cage does not exist, a fire may break out
5
in a hoistway sometimes. For the reason, a measure of
inhibiting a melting buffer material from dropping into a
hoistway is desired.
[0007]
In order to meet such request, for 5 example, Japanese
Patent Application Laid-Open No. 2002-220181 (PTL 1)
proposes to install a gutter-shaped member to receive a
melting buffer material and drain the melting buffer
material toward the platform side under a hanger rail so
10 that the melting buffer material may not drop into a
hoistway. According to PTL 1, in an opening and closing
door having a hanger rail to suspend the opening and closing
door, a pocket to fix the hanger rail, a door hanger to be
fixed to the upper part of the opening and closing door and
15 suspend the opening and closing door to the hanger rail, a
hanger roller to be rotatably installed in the door hanger
and roll over the hanger rail, and a buffer material
installed over the rolling surface of the hanger roller, in
order to prevent the melting buffer material of the hanger
20 roller from dropping onto the side of a hoistway, a guttershaped
member to receive and drain the melting buffer
material toward the center of the opening and closing door
is installed under the hanger roller. By receiving the
melting buffer material and draining the melting buffer
25 material toward the center of the opening and closing door
6
by the gutter-shaped member, the melting buffer material can
be prevented from dropping into a hoistway.
Citation List
5 Patent Literature
[0008]
PTL 1: Japanese Patent Application Laid-Open No. 2002-
220181
10 Summary of Invention
Technical Problem
[0009]
An opening and closing door proposed in PTL 1, however,
is configured so that a melting buffer material of a hanger
15 roller may be received by a gutter-shaped member,
accumulated in the center of the opening and closing door,
and drained toward the side of a platform and hence the
melting buffer material may sometimes drop over a gateway
upper frame constituting a platform gateway in a building.
20 Since the gateway upper frame is located above the platform
gateway, the temperature tends to rise by flames and hot air
and sometimes rises to a high temperature exceeding the
ignition point of a buffer material.
[0010]
7
In consequence of this, a dropped buffer material is
ignited at a gateway upper frame sometimes and there is the
danger of getting fire in a hoistway caused by the ignition
at the gateway upper frame. Consequently, improvement in
fire-resistance performance by inhibiting 5 a melting buffer
material from dropping over a gateway upper frame that comes
to be a high temperature is desired.
[0011]
An object of the present invention is to provide an
10 elevator apparatus having a novel opening and closing door
excellent in fire-resistance performance.
Solution to Problem
[0012]
15 A feature of the present invention is to inhibit a
melting buffer material from dropping over a gateway upper
frame of a high temperature by: arranging a buffer material
receiving member that extends in the directions of shifting
a hanger roller and receives the melting buffer material
20 between the upper part of the gateway upper frame and the
hanger roller; and receiving the melting buffer material
with the buffer material receiving member.
Advantageous Effects of Invention
25 [0013]
8
The present invention makes it possible to: receive a
melting buffer material with a buffer material receiving
member; and inhibit the melting buffer material from
dropping over a gateway upper frame of a high temperature.
As a result, the danger of igniting 5 a melting buffer
material in a hoistway reduces and an opening and closing
door excellent in fire-resistance performance can be
provided.
10 Brief Description of Drawings
[0014]
Fig. 1 is a schematic configuration diagram of an
elevator apparatus according to a first embodiment of the
present invention viewed from a side.
15 Fig. 2 is a rear elevation view of the elevator
apparatus shown in Fig. 1 viewed from a hoistway side.
Fig. 3 is a sectional view of the elevator apparatus
taken on line A-A in Fig. 2.
Fig. 4 is a sectional view of the elevator apparatus
20 taken on line B-B in Fig. 2.
Fig. 5 is a sectional view of an elevator apparatus
according to a second embodiment of the present invention
taken on line A-A similarly to Fig. 3.
9
Fig. 6 is a sectional view of the elevator apparatus
according to the second embodiment of the present invention
taken on line B-B similarly to Fig. 4.
Fig. 7 is a sectional view of an elevator apparatus
according to a third embodiment of 5 the present invention
taken on line A-A similarly to Fig. 3.
Fig. 8 is a sectional view of the elevator apparatus
according to the third embodiment of the present invention
taken on line B-B similarly to Fig. 4.
10
Description of Embodiments
[0015]
Embodiments according to the present invention are
hereunder explained in detail in reference to drawings. The
15 present invention, however, is not limited to the following
embodiments and various modified examples and application
examples in the technological concept of the present
invention are also included in the scope of the present
invention.
20
First Embodiment
[0016]
Fig. 1 is a view of the upper part of a two-leaved
single-swing opening and closing door according to a first
25 embodiment of the present invention viewed from a side, Fig.
10
2 is a view of the opening and closing door shown in Fig. 1
viewed from a hoistway side, Fig. 3 is a sectional view
taken on line A-A in Fig. 2, and Fig. 4 is a sectional view
taken on line B-B in Fig. 2.
5 [0017]
In Figs. 1 to 4, a first opening and closing door 1a
and a second opening and closing door 1b installed at a
platform gateway: shift to fully closed positions
respectively and close the platform gateway in a closing
10 state; and shift to fully open positions respectively and
overlap each other in an opening state. Here, in the
present embodiment, the first opening and closing door 1a
and the second opening and closing door 1b are: opened
toward the right side shown with the arrow O in Fig. 2; and
15 closed toward the left side shown with the arrow C in Fig. 2.
Consequently, the second opening and closing door 1b is
located on the closer side than the first opening and
closing door 1a (on the platform side). Then in such an
arrangement state, door hangers 2a and 2b are fixed to the
20 top ends of the first opening and closing door 1a and the
second opening and closing door 1b by a method of bolting or
welding.
[0018]
As shown in Figs. 1 and 2, the door hangers 2a and 2b
25 are suspended over hanger rails 4a and 4b extending in the
11
directions of shifting the opening and closing doors 1a and
1b on the inner side of a hoistway 8. The hanger rails 4a
and 4b are fixed to a pocket 3 fixedly arranged on the side
of the hoistway 8. The hanger rails 4a and 4b: have
different distances from the wall surface 5 of the hoistway 8
respectively in response to the positional relationship
between the first opening and closing door 1a and the second
opening and closing door 1b; and are located in conformity
with hanger rollers that will be described later.
10 [0019]
The pocket 3 is fixed to brackets 7a, 7b, and 7c with
bolts 20 and the brackets 7a, 7b, and 7c are fixed to the
inner wall surface of the hoistway 8 with bolts 21. A door
closing side vertical frame 11 and a door opening side
15 vertical frame 12 and gateway upper frames 10a and 10b
connecting them, those constituting a platform gateway, are
installed at a platform H and the gateway upper frames 10a
and 10b are connected at the lower part of the pocket 3 and
fixed to the inner wall surface of the hoistway 8 with bolts
20 22. The gateway upper frame 10a extends to the vicinity of
the first opening and closing door 1a and likewise the
gateway upper frame 10b extends to the vicinity of the
second opening and closing door 1b. Here, the surfaces of
the gateway upper frame 10a and the gateway upper frame 10b
25 on the side of the platform are adjusted so as to have an
12
identical plane (single plane) and look good. Further, the
gateway upper frame 10a and the gateway upper frame 10b may
also be formed integrally.
[0020]
The first opening and closing door 5 1a is configured so
as to: roll over the hanger rail 4a through two hanger
rollers 5a and 5b arranged at the door hanger 2a; be
inhibited from shifting upward by swing stopping rollers 6a
and 6b; and avoid derailing. That is, the hanger rollers 5a
10 and 5b are located between the door hanger 2a and the inner
wall surface of the hoistway 8 and right above the hanger
rail 4a. Further, the swing stopping rollers 6a and 6b are
located between the door hanger 2a and the inner wall
surface of the hoistway 8 and right below the hanger rail 4a.
15 The configuration therefore is arranged so as to interpose
the hanger rail 4a between the hanger rollers 5a and 5b and
the swing stopping rollers 6a and 6b.
[0021]
Such a configuration is similarly applied to the
20 second opening and closing door 1b and the second opening
and closing door 1b is configured so as to: roll over the
hanger rail 4b through two hanger rollers 5c and 5d arranged
at the door hanger 2b; be inhibited from shifting upward by
swing stopping rollers 6c and 6d; and avoid derailing. The
25 hanger rollers 5c and 5d are located between the door hanger
13
2b and the inner wall surface of the hoistway 8 and right
above the hanger rail 4b. Further, the swing stopping
rollers 6c and 6d are located between the door hanger 2b and
the inner wall surface of the hoistway 8 and right below the
hanger rail 4b. The configuration therefore 5 is arranged so
as to interpose the hanger rail 4b between the hanger
rollers 5c and 5d and the swing stopping rollers 6c and 6d.
[0022]
A buffer material 13 comprising a synthetic resin such
10 as an urethane rubber is installed over the outer
peripheries of the hanger rollers 5a, 5b, 5c, and 5d and the
configuration is arranged so as to: alleviate impact between
the hanger rollers 5a, 5b, 5c, and 5d and the rail surfaces
of the hanger rails 4a and 4b; and inhibit sifting sounds
15 and vibrations accompanying the shift of the first opening
and closing door 1a and the second opening and closing door
1b.
[0023]
In the opening and closing doors 1a and 1b of such
20 configurations, when the platform H gets fire, the first
opening and closing door 1a, the second opening and closing
door 1b, the gateway upper frames 10, the door closing side
vertical frame 11, and the door opening side vertical frame
12 are exposed to flames and hot air of the fire and
25 moreover heat is transferred by radiation. Then at the
14
upper parts of the first opening and closing door 1a and the
second opening and closing door 1b, heated air: flows in as
hot air through gaps between the gateway upper frames 10a
and 10b and the first opening and closing door 1a and the
second opening and closing door 5 1b; and raises the
temperatures of the opening and closing mechanism members of
the opening and closing doors 1a and 1b.
[0024]
The constituent members and the opening and closing
10 mechanism members of the opening and closing doors 1a and 1b
are not ignited and do not burn by hot air because they
mostly comprise metal materials such as steel plates but the
buffer material 13 applied to the hanger rollers 5a, 5b, 5c,
and 5d: comprises a synthetic resin; hence has a relatively
15 low melting point; and has the feature of melting, being
ignited, and burning. When flames and hot air flowing in
through the gaps between the gateway upper frames 10a and
10b and the first opening and closing door 1a and the second
opening and closing door 1b raise the temperatures of the
20 hanger rollers 5a, 5b, 5c, and 5d therefore, the buffer
material 13 melts and drops over the gateway upper frames 10.
[0025]
Since the gateway upper frames 10a and 10b are
arranged above a platform gateway, the possibility of being
25 exposed to flames and high temperature air tends to increase
15
and the temperatures of the gateway upper frames 10a and 10b
tend to be higher than the temperatures of the other
constituent members and opening and closing mechanism
members of the opening and closing doors 1a and 1b. When
the gateway upper frames 10 receive heat 5 by fire from the
platform H and the temperatures rise to temperatures
exceeding the ignition point of the buffer material 13
therefore, there is the danger that the melting and dropping
buffer material 13: touches the gateway upper frames 10a and
10 10b of high temperatures; ignites by itself; starts
combustion; and induces fire in a hoistway.
[0026]
In consideration of the above situation, in the
present embodiment, a buffer material receiving member 14a
15 and a buffer material receiving member 14b-1 extending in
the directions of shifting the hanger rollers 5a, 5b, 5c,
and 5d between the gateway upper frames 10a and 10b and the
hanger rollers 5a, 5b, 5c, and 5d are fixed to the pocket 3
so that the melting buffer material 13 may not drop over the
20 gateway upper frames 10a and 10b heated to high temperatures.
Here, although the buffer material receiving member 14a and
the buffer material receiving member 14b-1 are fixed to the
pocket 3 in the present embodiment, otherwise they may be
fixed directly to the inner wall surface of the hoistway 8.
25 On this occasion, the bottom end surface of the pocket 3 is
16
fixed to the inner wall surface of the hoistway 8 above the
buffer material receiving member 14a and the buffer material
receiving member 14b-1.
[0027]
As shown in Figs. 1 to 4, 5 the buffer material
receiving members 14a and 14b-1 are fixed to the pocket 3
with bolts 23 and installed so as to extend in the
directions of shifting the hanger rollers 5a, 5b, 5c, and 5d
between the upper parts of the gateway upper frames 10a and
10 10b and the hanger rollers 5a, 5b, 5c, and 5d or desirably
the swing stopping rollers 6a, 6b, 6c, and 6d. Meanwhile,
when the swing stopping rollers 6a, 6b, 6c, and 6d are not
installed, the buffer material receiving members 14a and
14b-1 are arranged between the upper parts of the gateway
15 upper frames 10a and 10b and the hanger rails 4a and 4b. In
any of the cases, the buffer material receiving members 14a
and 14b-1 are arranged between the upper parts of the
gateway upper frames 10a and 10b and the hanger rollers 5a,
5b, 5c, and 5d.
20 [0028]
As shown in Fig. 3, the buffer material receiving
member 14a corresponding to the first opening and closing
door 1a (first opening and closing door buffer material
receiving member): has a top surface of a planar shape;
25 extends from the pocket 3 to the vicinity of the door hanger
17
2a; and has such a shape that at least projected parts of
the hanger rollers 5a and 5b obtained when they are
projected vertically over the top surface may fall within
the top surface. Further, in the present embodiment, the
length of the buffer material receiving 5 member 14a is
decided so that the tip of the buffer material receiving
member 14a may nearly coincide with or exceed the tip of the
gateway upper frame 10a. Furthermore, the buffer material
receiving member 14a is arranged so as to extend to the
10 parts where the hanger rollers 5a and 5b are located in the
state of closing the first opening and closing door 1a. The
fundamental function of the buffer material receiving member
14a is at least to inhibit the melting buffer material 13
from dropping over the gateway upper frame 10a when the
15 buffer material 13 of the hanger rollers 5a and 5b melts and
drops.
[0029]
Meanwhile, as shown in Fig. 4, the buffer material
receiving member 14b-1 corresponding to the second opening
20 and closing door 1b (second opening and closing door buffer
material receiving member): has a top surface of a planar
shape; extends from the pocket 3 to the vicinity of the door
hanger 2b; and has such a shape that at least projected
parts of the hanger rollers 5c and 5d obtained when they are
25 projected vertically over the top surface may fall within
18
the top surface. Further, in the present embodiment, the
length of the buffer material receiving member 14b-1 is
decided so that the tip of the buffer material receiving
member 14b-1 may nearly coincide with or exceed the tip of
the gateway upper frame 10b. Furthermore, 5 the buffer
material receiving member 14b-1 is arranged so as to extend
to the parts where the hanger rollers 5c and 5d are located
in the state of closing the first opening and closing door
1b. Likewise, the fundamental function of the buffer
10 material receiving member 14b-1 is at least to inhibit the
melting buffer material 13 from dropping over the gateway
upper frame 10b when the buffer material 13 of the hanger
rollers 5c and 5d melts and drops.
[0030]
15 Meanwhile, as shown in Fig. 2, the first opening and
closing door 1a and the second opening and closing door 1b
are opened in the arrow direction O (the right direction in
the figure) and closed in the arrow direction C (the left
direction in the figure). Consequently, the danger that an
20 end surface of the second opening and closing door 1b
collides with the buffer material receiving member 14a when
the second opening and closing door 1b shifts toward the
closing side is avoided.
[0031]
19
Meanwhile, as shown in the figures, it is also
possible to form a buffer material receiving member 14b-2 by
bending the lowermost end of the pocket 3 toward the side of
the second opening and closing door 1b. On this occasion
too, similarly to the buffer material receiving 5 member 14b-1,
the buffer material receiving member 14b-2: has a top
surface of a planar shape; extends to the vicinity of the
position where the door hanger 2b is located; and has such a
shape that at least projected parts of the hanger rollers 5c
10 and 5d obtained when they are projected vertically over the
top surface may fall within the top surface. Further, the
length of the buffer material receiving member 14b-2 is
decided so that the tip of the buffer material receiving
member 14b-2 may nearly coincide with or exceed the tip of
15 the gateway upper frame 10b. Furthermore, the buffer
material receiving member 14b-2 is arranged so as to extend
to the parts where the hanger rollers 5c and 5d are located
in the state of closing the first opening and closing door
1b.
20 [0032]
By installing the buffer material receiving member
14b-2 in this way, it is possible to omit the buffer
material receiving member 14b-1 and obtain the functions and
effects of facilitating operations during attaching and
25 being able to save material costs. Further, it is also
20
possible to improve the stiffness of the pocket 3 by bending
the bottom end of the pocket 3 and forming the buffer
material receiving member 14b-2. The buffer material
receiving member 14b-2 therefore has the function of
receiving the melting buffer material 13 5 and the function of
improving the stiffness of the pocket 3.
[0033]
Meanwhile, in the present embodiment, both the buffer
material receiving member 14b-1 and the buffer material
10 receiving member 14b-2 are installed and the configuration
is arranged so that the buffer material receiving member
14b-2 may make hot air and heat by radiation hardly illaffect
the buffer material receiving member 14b-1 and the
hanger rolls 5c and 5d.
15 [0034]
In such a configuration, when a fire breaks out,
flames and hot air flow into the platform H. The flames and
hot air heat the first opening and closing door 1a, the
second opening and closing door 1b, the gateway upper frames
20 10, the door closing side vertical frame 11, and the door
opening side vertical frame 12. At the upper parts of the
first opening and closing door 1a and the second opening and
closing door 1b in particular, heated air flows in as hot
air through the gaps between the gateway upper frames 10a
25 and 10b and the first opening and closing door 1a and the
21
second opening and closing door 1b. As a result, the
phenomenon of raising the temperatures of the hanger rollers
5a, 5b, 5c, and 5d, melting the buffer material 13, and
dropping the buffer material 13 by the gravity is generated.
5 [0035]
In the present embodiment, however, since the melting
buffer material 13 can be received at least by the buffer
material receiving members 14a and 14b-1 installed below the
hanger rollers 5a, 5b, 5c, and 5d, the melting buffer
10 material 13 is prevented from dropping over the gateway
upper frames 10a and 10b of high temperatures. Here, when
the buffer material receiving member 14b-1 is omitted and
the buffer material receiving member 14b-2 is installed
instead, the melting buffer material 13 is received by the
15 buffer material receiving member 14b-2.
[0036]
Here, in the present embodiment, since the buffer
material receiving members 14a and 14b-1 are blocked by the
gateway upper frames 10a and 10b and the buffer material
20 receiving member 14b-2 formed by bending the bottom end of
the pocket 3, hot air does not act directly and radiant heat
is also blocked and hence the temperature rise can be kept
low in comparison with the gateway upper frames 10a and 10b.
[0037]
22
Although a metal material such as a steel plate of a
high thermal resistance is used for the buffer material
receiving members 14a and 14b-1 in the present embodiment,
if they are configured by a material having a low heattransfer
coefficient, for example a porcelain 5 material such
as ceramics, it is possible to: reduce the temperature rise
of the buffer material receiving members 14a and 14b-1; and
further reduce the danger of igniting the buffer material 13
melting over the upper surfaces of the buffer material
10 receiving members 14a and 14b-1. Further, it is also
possible to: install a porcelain material around the outer
periphery of a metal material; and obtain buffer material
receiving members 14a and 14b-1 having a low strength and a
low heat-transfer coefficient.
15 [0038]
As stated above, in the present embodiment, since the
melting buffer material 13 is received by the buffer
material receiving member 14a and the buffer material
receiving member 14b-1 or the buffer material receiving
20 member 14b-2, the melting buffer material 13 is prevented
from dropping over the gateway upper frames 10a and 10b of
high temperatures. Moreover, if the quantity of the melting
buffer material 13 is small, the buffer material 13 stays
over the top surfaces of the buffer material receiving
25 member 14a and the buffer material receiving member 14b-1 or
23
the buffer material receiving member 14b-2 and the danger of
dropping over the gateway upper frames 10a and 10b of high
temperatures is small.
[0039]
Further, as shown in Fig. 2, since 5 the buffer material
receiving members 14a and 14b-1 extend up to the door
closing side vertical frame 11 and the door opening side
vertical frame 12, the danger of, if the quantity of the
melting buffer material 13 is large, draining the buffer
10 material 13 having dropped over the top surfaces of the
buffer material receiving members 14a and 14b-1 toward the
door closing side vertical frame 11 and the door opening
side vertical frame 12 and dropping over the gateway upper
frames 10a and 10b of high temperatures is small. Since the
15 temperatures of the door closing side vertical frame 11 and
the door opening side vertical frame 12 are lower than the
temperatures of the gateway upper frames 10a and 10b, the
danger of generating fire is small. In addition to that, it
is also possible to drain the melting buffer material 13
20 aggressively toward the door closing side vertical frame 11
and the door opening side vertical frame 12 by extending the
buffer material receiving members 14a and 14b-1 toward the
door closing side vertical frame 11 and the door opening
side vertical frame 12 obliquely to the gravity direction.
25 [0040]
24
Further, it is possible to prevent the melting buffer
material 13 from flowing out toward the opening and closing
doors 1a and 1b by bending the tip of the buffer material
receiving member 14a (tip on the first opening and closing
door side) and tips of the 5 buffer material receiving members
14b-1 and 14b-2 (tips on the second opening and closing door
side) upward and forming uplifted parts. It is thereby
possible to further reduce the danger of dropping the
melting buffer material 13 over the gateway upper frames 10a
10 and 10b of high temperatures.
[0041]
As stated above, according to the present embodiment,
the configuration is arranged so as to: arrange buffer
material receiving members extending in the directions of
15 shifting hanger rollers and receiving a melting buffer
material between the upper parts of gateway upper frames of
a platform gateway and the hanger rollers; and receive the
melting buffer material by the buffer material receiving
members. It is possible thereby to receive the melting
20 buffer material by the buffer material receiving members and
inhibit the melting buffer material from dropping over the
gateway upper frames of high temperatures and hence the
danger of generating fire in a hoistway is reduced and an
opening and closing door excellent in fire-resistance
25 performance is obtained.
25
Second Embodiment
[0042]
A second embodiment according to the present invention
is explained hereunder. A reference 5 numeral identical to
the first embodiment represents an identical constituent
component or a constituent component having a similar
function. The second embodiment is the case of mounting and
fixing a heat insulating material over and to the top
10 surfaces of buffer material receiving members 14a, 14b-1,
and 14b-2.
[0043]
In Fig. 5 showing the side of a first opening and
closing door 1a, a heat insulating material 15a is mounted
15 over and fixed to the top surface of a buffer material
receiving member 14a. Further, a heat insulating material
15b-2 is also mounted over and fixed to the top surface of a
buffer material receiving member 14b-2 formed in a pocket 3.
[0044]
20 Further, in Fig. 6 showing the side of a second
opening and closing door 1b, a heat insulating material 15b-
1 is mounted over and fixed to the top surface of a buffer
material receiving member 14b-1. Further, a heat insulating
material 15b-2 is also mounted over and fixed to the top
26
surface of a buffer material receiving member 14b-2 formed
in a pocket 3.
[0045]
Various kinds of materials can be used as a heat
insulating material but an inorganic 5 material is desirably
used. For example, calcium silicate, ceramics, alumina, or
the like can be used by being molded and processed into an
appropriate shape. Then such an inorganic material is
melted and processed to a fibrous form and subjected to
10 thermocompression bonding and thus a heat insulating
material is produced. Otherwise, a heat insulating material
can be produced by processing into a porous form. By this
method, a heat insulating material itself can absorb a
melting buffer material 13 and the melting buffer material
15 13 can be fixed to the surfaces of the heat insulating
materials 15a, 15b-1, and 15b-2.
[0046]
Then the buffer material receiving members 14a, 14b-1,
and 14b-2 comprise a ferrous material (stainless steel for
20 example) and the heat insulating materials 15a, 15b-1, and
15b-2 are assembled and fixed to the top surfaces of them.
[0047]
The temperature rise of the heat insulating materials
15a, 15b-1, and 15b-2 therefore can be smaller than the
25 temperature rise of the buffer material receiving members
27
14a, 14b-1, and 14b-2 comprising a metal. As a result, even
if a melting buffer material 13 drops over any one of the
heat insulating materials, the temperature rise is kept low
and hence the danger of igniting the buffer material 13 more
reduces than the first embodiment. 5 Further, since the
temperature of the heat insulating material 15b-2 of the
buffer material receiving member 14b-2 located on the side
lower than the buffer material receiving members 14a and
14b-1 is kept low, the heat radiation of them can be kept
10 low and the temperature rise of the buffer material
receiving member 14b-1 can be inhibited.
[0048]
Here, although a heat insulating material is mounted
over and fixed to buffer material receiving members 14a,
15 14b-1, and 14b-2 in the present embodiment, it is possible
to: install a heat insulating material at least over the top
surfaces of the buffer material receiving members 14a and
14b-1; and if necessary install a heat insulating material
over the top surface of the buffer material receiving member
20 14b-2. As stated also in the first embodiment, however,
when the buffer material receiving member 14b-1 is omitted,
since the buffer material receiving member 14b-2 plays the
role of the buffer material receiving member 14b-1, a heat
insulating material 15b-2 has to be installed over the
25 buffer material receiving member 14b-2.
28
[0049]
In this way, in the present embodiment, in addition to
the functions and effects described in the first embodiment,
since a heat insulating material is mounted over and fixed
to at least the top surfaces of 5 the buffer material
receiving members 14a and 14b-1 and if necessary the top
surface of the buffer material receiving member 14b-2, it is
possible to: keep the surface temperatures of the respective
heat insulating materials low; and further reduce the danger
10 of igniting a melting buffer material.
Third Embodiment
[0050]
A third embodiment according to the present invention
15 is explained hereunder. A reference numeral identical to
the first embodiment and the second embodiment represents an
identical constituent component or a constituent component
having a similar function. The third embodiment is the case
of fixing a radiation inhibiting material to the bottom
20 surfaces of buffer material receiving members 14a, 14b-1,
and 14b-2 and the bottom inner surfaces of gateway upper
frames 10a and 10b.
[0051]
In Fig. 7 showing the side of a first opening and
25 closing door 1a, a radiation inhibiting material 16a is
29
fixed to the bottom surface of a buffer material receiving
member 14a. Further, a radiation inhibiting material 16b-2
is also mounted over and fixed to the bottom surface of a
buffer material receiving member 14b-2 formed in a pocket 3.
The radiation inhibiting materials 5 16a, 16b-1, and 16b-2
have the function of reflecting radiant heat. Further,
likewise, a radiation inhibiting material 16c-1 is fixed
also to the bottom inner surface of a gateway upper frame
10a and the radiation inhibiting material 16c-1 has the
10 function of inhibiting radiant heat from radiating.
[0052]
Further, in Fig. 8 showing the side of a second
opening and closing door 1b, a radiation inhibiting material
16b-1 is fixed to the bottom surface of a buffer material
15 receiving member 14b-1. Further, a radiation inhibiting
material 16b-2 is also mounted over and fixed to the bottom
surface of a buffer material receiving member 14b-2 formed
in a pocket 3. The radiation inhibiting materials 16a, 16b-
1, and 16b-2 have the function of reflecting radiant heat.
20 Further, likewise, a radiation inhibiting material 16c-2 is
fixed also to the bottom inner surface of a gateway upper
frame 10b and the radiation inhibiting material 16c-2 has
the function of inhibiting radiant heat from radiating.
[0053]
30
Various kinds of materials can be used as a radiation
inhibiting material but a metal material excellent in
thermal resistance is used desirably. For example, aluminum,
aluminum alloy, and the like formed into a tabular shape or
a tape shape can be used. A good configuration 5 is that: the
buffer material receiving members 14a, 14b-1, and 14b-2 and
the gateway upper frames 10a and 10b comprise a ferrous
material (stainless steel, for example); and the radiation
inhibiting materials 16a, 16b-1, 16b-2, 16c-1, and 16c-2 are
10 assembled and fixed to the bottom surfaces of the buffer
material receiving members 14a, 14b-1, and 14b-2 and the
bottom inner surfaces of the gateway upper frames 10a and
10b.
[0054]
15 It is therefore possible to reduce the temperature
rise by the radiation inhibiting materials 16a, 16b-1, 16b-2,
16c-1, and 16c-2 in comparison with the temperature rise in
the case of only the buffer material receiving members 14a,
14b-1, and 14b-2 comprising a metal shown in Fig. 1. As a
20 result, even when a melting buffer material 13 drops over
any one of the radiation inhibiting materials, the
temperature rise is inhibited and hence the danger of
igniting a buffer material 13 reduces. Further, the
radiation of radiant heat is inhibited by the radiation
25 inhibiting materials 16c-1 and 16c-2 of the gateway upper
31
frames 10a and 10b and hence the temperature rise of the
buffer material receiving members 14a, 14b-1, and 14b-2 can
be inhibited.
[0055]
Here, although the radiation inhibiting 5 materials are
fixed to the buffer material receiving members 14a, 14b-1,
and 14b-2 and the gateway upper frames 10a and 10b in the
present embodiment, it is possible to: install a radiation
inhibiting material at least over the bottom surfaces of the
10 buffer material receiving members 14a and 14b-1; and if
necessary install a radiation inhibiting material over the
bottom surface of the buffer material receiving member 14b-2
and the bottom inner surfaces of the gateway upper frames
10a and 10b. As stated also in the first embodiment,
15 however, when the buffer material receiving member 14b-1 is
omitted, since the buffer material receiving member 14b-2
plays the role of the buffer material receiving member 14b-1,
a heat radiation inhibiting material 16b-2 has to be
installed over the buffer material receiving member 14b-2.
20 [0056]
Here, although the case of being combined with the
second embodiment is shown in the present embodiment, it is
also possible to be combined with the first embodiment and,
in this case, a heat insulating material is not installed,
25 radiation inhibiting materials 16a, 16b-1, and 16b-2 are
32
fixed to the bottom surfaces of buffer material receiving
members 14a, 14b-1, and 14b-2, and radiation inhibiting
materials 16b-1 and 16b-2 are fixed to the bottom inner
surfaces of gateway upper frames 10a and 10b.
5
Fourth Embodiment
[0057]
Although the above explanations have been made on the
basis of the case of an opening and closing door of a two10
leaved single-swing type in the first to third embodiments,
it is also possible to apply the present invention to an
opening and closing door of a two-leaved center-swing type.
In the case of the opening and closing door of a two-leaved
center-swing type, in the state of closing a first opening
15 and closing door 1a and a second opening and closing door 1b
as shown in Fig. 2, side end surfaces of them face and touch
each other in the center. When the opening and closing door
opens therefore, the first opening and closing door 1a and
the second opening and closing door 1b open by shifting in
20 the manner of separating in the right and left opposite
directions from the center. As a result, the opening and
closing doors 1a and 1b do not overlap each other when the
opening and closing doors 1a and 1b open unlike the first to
third embodiments.
25 [0058]
33
If you try to apply the present invention to such an
opening and closing door of a two-leaved center-swing type,
you may adopt the same structure as shown in Figs. 4, 6, or
8 to both a first opening and closing door 1a and a second
opening and closing door 1b. That 5 is, a buffer material
receiving member 14b-1 is installed in each of the opening
and closing doors 1a and 1b individually. Also by such a
structure, it is possible to receive a melting buffer
material 13 by a buffer material receiving member 14b-1 and
10 inhibit the melting buffer material 13 from dropping over
gateway upper frames 10a and 10b of high temperatures and
hence the danger of generating fire in a hoistway reduces
and an opening and closing door excellent in fire-resistance
performance is obtained. Here, the buffer material
15 receiving member 14b-1 is not required to be separated
unlike a buffer material receiving member 14a in the first
to third embodiments and may be a buffer material receiving
member 14b-1 of a continuous shape.
[0059]
20 Further, in an opening and closing door of a twoleaved
center-swing type, it is advantageous to: omit a
buffer material receiving member 14b-1; and form only a
buffer material receiving member 14b-2 by bending the
lowermost end of a pocket 3 toward the side of opening and
25 closing doors 1a and 1b. It is possible thereby to form the
34
buffer material receiving member 14b-2 integrally and
continuously over the two opening and closing doors 1a and
1b. As a result, the functions and effects of: being able
to omit the buffer material receiving member 14b-1;
facilitating operations during attaching; 5 and being able to
save material costs can be obtained.
[0060]
As stated above, in the present invention, a
configuration of: arranging a buffer material receiving
10 member extending in the directions of shifting a hanger
roller between the upper part of a gateway upper frame of a
platform gateway and the hanger roller; and receiving a
melting buffer material by the buffer material receiving
member is adopted. It is possible thereby to receive the
15 melting buffer material by the buffer material receiving
member and inhibit the melting buffer material from dropping
over the gateway upper frame of a high temperature and hence
the danger of generating fire in a hoistway reduces and the
fire-resistance performance comes to be excellent.
20 [0061]
Here, the present invention is not limited to the
embodiments stated above and includes various modified
examples. For example, the above embodiments are explained
in detail in order to make the present invention easy to
25 understand and the present invention is not necessarily
35
limited to the cases having all the configurations explained
above. Further, it is possible to replace a part of a
configuration of an embodiment with a configuration of
another embodiment and add a configuration of an embodiment
to a configuration of another 5 embodiment. Furthermore, it
is possible to add, delete, or replace another configuration
to, from, or with a part of a configuration of an embodiment.
Reference Signs List
10 [0062]
1a First opening and closing door
1b Second opening and closing door
2a, 2b Door hanger
3 Pocket
15 4a, 4b Hanger rail
5a to 5d Hanger roller
6a to 6d Swing stopping roller
7a to 7c Bracket
8 Hoistway
20 10 Gateway upper frame
11 Door closing side vertical frame
12 Door opening side vertical frame
13 Buffer material
14a, 14b-1, 14b-2 Buffer material receiving member
25 15a to 15c Heat insulating material
36
16a to 16 Radiation inhibiting material
21 to 23 Bolt
H Platform

WE CLAIM:
[Claim 1]
An elevator apparatus comprising a door opening side
vertical frame, a door closing side 5 vertical frame, a
gateway upper frame connecting the upper parts of both the
vertical frames, those constituting a platform gateway at an
elevator platform, and an opening and closing door to open
and close the platform gateway and being configured so that
10 a door hanger suspended on a hanger rail fixed to a hoistway
is installed at the upper part of the opening and closing
door and a hanger roller rolling over the hanger rail and
having a buffer material comprising a synthetic resin over a
rolling surface is installed at the door hanger, wherein a
15 buffer material receiving member extending in the sifting
directions of the hanger roller, receiving the buffer
material of a melting state, and inhibiting the buffer
material from dropping over the gateway upper frame is
arranged between the upper part of the gateway upper frame
20 and the hanger roller.
[Claim 2]
An elevator apparatus according to Claim 1, wherein:
the opening and closing door comprises a first opening
25 and closing door and a second opening and closing door; and
38
in the state of closing the first opening and closing
door and the second opening and closing door, the buffer
material receiving member comprises a first opening and
closing door buffer material receiving member extending in
the range where the hanger roller 5 of the first opening and
closing door is located and a second opening and closing
door buffer material receiving member extending in the range
where the hanger roller of the second opening and closing
door is located.
10
[Claim 3]
An elevator apparatus according to Claim 2, wherein:
the opening and closing door is an opening and closing
door of a two-leaved single-swing type that is configured so
15 that the first opening and closing door and the second
opening and closing door open in an identical direction and
close in another identical direction and moreover the first
opening and closing door and the second opening and closing
door overlap each other in an opening state; and
20 in the state of closing the first opening and closing
door and the second opening and closing door, the buffer
material receiving member comprises a first opening and
closing door buffer material receiving member extending in
the range where the hanger roller of the first opening and
25 closing door is located and a second opening and closing
39
door buffer material receiving member being separated from
the first opening and closing door buffer material receiving
member and extending in the range where the hanger roller of
the second opening and closing door is located.
5
[Claim 4]
An elevator apparatus according to Claim 3, wherein: a
pocket to which the hanger rail is fixed is fixed to the
inner wall surface of the hoistway; and the first opening
10 and closing door buffer material receiving member and the
second opening and closing door buffer material receiving
member are fixed to the pocket.
[Claim 5]
15 An elevator apparatus according to Claim 4, wherein
either of the first opening and closing door buffer material
receiving member and the second opening and closing door
buffer material receiving member is formed at a part where
the bottom end of the pocket is bent.
20
[Claim 6]
An elevator apparatus according to Claim 5, wherein: a
heat insulating material is installed over the top surfaces
of the first opening and closing door buffer material
25 receiving member and the second opening and closing door
40
buffer material receiving member; a heat radiation
inhibiting material is installed over the bottom surfaces of
the first opening and closing door buffer material receiving
member and the second opening and closing door buffer
material receiving member; or a heat insulating 5 material is
installed over the top surfaces and a heat radiation
inhibiting material is installed over the bottom surfaces of
the first opening and closing door buffer material receiving
member and the second opening and closing door buffer
10 material receiving member.
[Claim 7]
An elevator apparatus according to Claim 2, wherein;
the opening and closing door is an opening and closing
15 door of a two-leaved center-swing type that is configured so
that the first opening and closing door and the second
opening and closing door open and close in opposite
directions; and
in the state of closing the first opening and closing
20 door and the second opening and closing door, the buffer
material receiving member either is installed separately in
the range where the hanger roller of the first opening and
closing door is located and in the range where the hanger
roller of the second opening and closing door is located or
25 extends integrally and continuously over the range where the
41
hanger roller of the first opening and closing door is
located and over the range where the hanger roller of the
second opening and closing door is located.
5 [Claim 8]
An elevator apparatus according to Claim 7, wherein: a
pocket to which the hanger rail is fixed is fixed to the
inner wall surface of the hoistway; and the buffer material
receiving member is formed at a part where the bottom end of
10 the pocket is bent.
[Claim 9]
An elevator apparatus according to Claim 7, wherein: a
heat insulating material is installed over the top surface
15 of the buffer material receiving member; a heat radiation
inhibiting material is installed over the bottom surface of
the buffer material receiving member; or a heat insulating
material is installed over the top surface and a heat
radiation inhibiting material is installed over the bottom
20 surface of the buffer material receiving member.