JP3255599B2 - Opening device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an opening device suitable for application to a door in which the upper surface of a lower frame of a four-sided frame is formed smoothly.

[0002]

2. Description of the Related Art As an opening device, there is known an opening device in which the upper surface of a lower frame of a four-sided frame is made smooth in order to facilitate passage of a wheelchair, for example. In this type of opening device, when the door is closed, an airtight member projecting to the lower frame side of the four-sided frame is attached to the lower portion of the door in order to close a gap between the door and the upper surface of the lower frame. Things have been suggested. This airtight member is raised by the spring force of the spring when the door is open, and when the door is closed, the operation rod projecting from the side of the door comes into contact with the vertical frame of the four-sided frame. It is pressed against the spring force and descends, whereby the space between the lower surface of the door body and the upper surface of the lower frame is closed.

[0003]

In the above-described conventional opening device, when the door body is attached to the four-sided frame via a pivot hinge so as to be freely opened and closed, the pivot hinge on the lower side of the door body interferes. The airtight member cannot be attached to the entire lower part of the door body, and a space without the airtight member is formed at a position near the pivot hinge, which causes a problem that airtightness is impaired.

Accordingly, an object of the present invention is to solve the above-mentioned problems of the prior art, and to provide an opening device capable of attaching an airtight device to the entire lower part of a door body attached to a four-sided frame via a pivot hinge. Is to provide.

[0005]

According to the first aspect of the present invention, a door body is attached to a four-sided frame via a pivot hinge so as to be openable and closable, and from the lower part of the door body in conjunction with the closing operation of the door body. An airtight device having an airtight member protruding toward the lower frame side of the four-sided frame is provided over a substantially entire width at a lower portion of the door body,
The pivot hinge disposed at a lower portion of the door body is a door body.
A third pivot part fixed to the lower part of the
The mounting arm of the bot portion is mounted so as not to be on the movement locus of the airtight member.

According to the first aspect of the present invention, the pivot hinge disposed at the lower part of the door body is attached so as not to be on the movement locus of the airtight member. Can be installed over

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a four-sided frame attached to the skeleton side. This four-sided frame 1 has an upper frame 3
, A lower frame 5, and vertical frames 7 and 9. A door body 10 is attached to the four-sided frame 1 so as to be freely opened and closed.

The door body 10 constitutes, for example, an entrance door,
It comprises a hanging side vertical frame 11, a doorside vertical frame 12, a lower frame 13, an upper frame 16, a vertical middle frame 17, and a panel 18. Each of the frames 11, 12, 13, 16, 17 is made of an extruded aluminum alloy material, and a tapping screw 19 inserted from a hole on the vertical frame side into a tapping hole 13a as shown in FIG. Are joined by

As shown in FIG. 3, the door 10 is attached to the four-sided frame 1 via an upper pivot hinge 21 and a lower pivot hinge 31 so as to be openable and closable. The upper pivot hinge 21 includes a first pivot portion 23 fixed to the upper part of the door body 10 with screws 22 and a second pivot portion 25 fixed to the upper frame 3 of the four-sided frame 3 with screws 24. The parts 23 and 25 are connected by a support shaft 27. The lower pivot hinge 31 includes a third pivot portion 33 fixed to the lower portion of the door body 10 with screws 32 and a fourth pivot portion 35 fixed to the lower frame 5 of the four-sided frame 5 with screws 34. 33 and 35 are connected by a support shaft 37.

The shape of the mounting arm 41 of the first pivot portion 23 is flat, and in the conventional configuration, the shape of the mounting arm of the third pivot portion 33 is also the same as the shape of the mounting arm 41 of the first pivot portion 23. It was formed in substantially the same flat plate shape.

However, in this embodiment, the mounting arm 43 of the third pivot portion 33 is bent in a substantially Z shape, and a gap 45 is formed in the vicinity of the escape portion 43a of the mounting arm 43. An airtight device 51 capable of closing the space between the door body 10 and the lower frame 5 is attached in the space 45. As shown in FIG. It is attached over the entire length L.

In short, in this embodiment, the pivot hinge arranged at the lower part of the door body is attached so as not to be on the movement trajectory of the airtight member.

The airtight device 51 includes an airtight member 52 projecting from the lower portion 10A of the door body 10 to the lower frame 5 side of the four-sided frame 1 in conjunction with the closing operation of the door body 10.

That is, as shown in FIGS. 4A and 4B,
The airtight device 51 includes a holder 53, which is fixed to the lower portion 10 </ b> A of the door body 10 via screws 50. A guide groove 54 is formed on the lower surface of the holder 53, and an upper edge 55 of a bracket 55 is formed in the guide groove 54.
a is slidably fitted. The bracket 55 has a lateral groove 56 in which a slider 57 is slidably mounted. This slider 57
One end of a link 61 is connected to the bracket 55 via pins 58 and 59, and a movable body 63 is connected to the other end of the link 61 via a pin 62. A closing member support 64 is connected to the movable body 63.
An airtight member 52 made of, for example, rubber is fixed to 4.

One end 66a of an operating rod 66 is connected to the slider 57, and the other end 66b of the operating rod 66 is connected to the slider 57.
2 protrudes from the end surface of the hanging-side vertical stile 11 as shown in FIG. Reference numeral 67 denotes a spring receiver fixed to the shaft of the operating rod 66, and a spring 68 is mounted between the spring receiver 67 and the bracket 55.

The operation of the airtight device 51 will be described.
0 is in the open position, as shown in FIG.
The operating rod 66 is moved in the direction of arrow A (rightward in the figure) by the spring force of (2), the movable body 63 is pulled up via the link 61, and the airtight member 52 is moved to the position shown in FIG.
It is stored in the holder 53. On the other hand, when the door body 10 is closed and the other end 66b of the operation rod 66 abuts on the vertical frame of the four-sided frame 1, the operation rod 66 is moved in the direction of arrow B as shown in FIG. 5), the movable body 63 is pushed down via the link 61, and
As shown in FIG.
2 projects toward the lower frame 5 side of the four-sided frame 1, and the airtight member 52 closes the space between the door body 10 and the lower frame 5.

In this embodiment, as shown in FIG. 3, the mounting arm 43 of the third pivot portion 33 is bent in a substantially Z-shape, and a gap 4 is formed near the relief portion 43a of the mounting arm 43.
5 is formed, and an airtight device 51 capable of closing the space between the door body 10 and the lower frame 5 is attached in the space 45.
As in the prior art, the third pivot portion 33 obstructs the door body 10
The problem that the airtight device cannot be attached to the entire lower part of the hood is solved. Since the airtight device 51 can be attached to the entire lower portion of the door body 10 in this manner, a space without an airtight member is not formed at a position near the pivot hinge as in the related art, and the airtightness is impaired. There is no such thing.

Although the present invention has been described with reference to one embodiment, it is apparent that the present invention is not limited to this. In this embodiment, in the structure of the airtight device, a structure is employed in which the airtight member is protruded by bringing the operation rod into contact with the vertical frame.However, the present invention is not limited to this. Instead, it is important to provide an airtight device in the entire lower area of the door body.

[0020]

According to the first aspect of the present invention, since the pivot hinge disposed at the lower part of the door body is attached so as not to be on the movement trajectory of the air-tight member, the air-tight device can be installed to the substantially entire width of the lower part of the door body. The airtightness can be improved.

[Brief description of the drawings]

FIG. 1 is a front view of an opening device according to the present invention.

FIG. 2 is an enlarged view showing a lower portion of a door body.

FIG. 3 is a longitudinal sectional view of FIG.

FIG. 4 is a view showing a state in which an airtight member of the airtight device is stored, wherein a is a transverse sectional view and b is a longitudinal sectional view.

FIGS. 5A and 5B are diagrams showing a state in which an airtight member of the airtight device is protruded, where a is a cross-sectional view and b is a vertical cross-sectional view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Four-sided frame 3 Upper frame 5 Lower frame 7, 9 Vertical frame 10 Door body 11 Hanging side vertical frame 12 Door side vertical frame 13 Lower frame 16 Upper frame 17 Vertical middle frame 18 Panel 21 Upper pivot hinge 23 First pivot portion 25 second pivot portion 31 lower pivot hinge 33 third pivot portion 35 fourth pivot portion 43 mounting arm 43a relief portion 45 air gap 51 airtight device 52 airtight member

Claims (1)

(57) [Claims] 1. A door body is attached to a four-sided frame via a pivot hinge so as to be openable and closable, and has an airtight member projecting from a lower portion of the door body to a lower frame side of the four-sided frame in conjunction with a closing operation of the door body. An airtight device is provided over a substantially entire width at a lower portion of the door body, and the pivot hinge disposed at a lower portion of the door body includes a third pivot portion fixed to a lower portion of the door body,
An opening device wherein the mounting arm of the third pivot portion is mounted so as not to be on the movement locus of the airtight member.