JPH0693778A - Lower part hermetic structure of sliding door of suspension type - Google Patents

Abstract

PURPOSE:To secure airtightness for the lower part of a sliding door in a simple structure by furnishing a shielding member which is mobile in the vertical direction and whose movement to the left and right is restricted, and fitting this member in a groove formed in the undersurface of a door body. CONSTITUTION:Being capable of traveling, a door body 5 is hung down on a rail 4 installed in a transom 3, which is furnished at the upper frame 2a of an open frame 2 formed in a wall surface. In this sliding door of hang type, a shielding member 15 having a length approx. equal to the cross-width of the door body 5 installed upon a floor surface 7 slidably is fitted in a groove 11, which is formed in the undersurface of the door body 5 and whose undersurface is left open, in such a condition that the member is mobile in the vertical direction and its movement to the left and right is restricted. Accordingly the shielding member 15 travels to the left and right together with the door body 5 and moves in the vertical direction in compliance with the surface unevenness of the floor 7, and gap generation is precluded between the door body undersurface and the floor surface 7, and also the door body 5 is prevented from being thrusted up.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lower airtight structure in a sliding door type sliding door.

[0002]

2. Description of the Related Art A sliding door-type sliding door in which a door is movably suspended on a rail installed on an upper frame of an opening frame formed at a doorway of a room for housing, storage, business, etc. is soundproof when closed. It is well known that a packing is interposed at the joint surface between the door body and the opening frame as a means for maintaining an airtight state for dust prevention, heat insulation, and sterilization.

However, in a sliding door type sliding door, it is difficult to interpose a packing because there is a large gap between the lower surface of the door body that opens and closes and the floor surface (or the sliding surface). A pulling mechanism and a dropping mechanism are provided to ensure airtightness when opening and closing. Therefore, there is a problem that the configuration is complicated and the operation is troublesome.

[0004]

The problem to be solved by the present invention is that the conventionally known airtight structure in the sliding door type sliding door has a complicated structure and is difficult to operate.

[0005]

SUMMARY OF THE INVENTION According to the present invention, there is provided a lower surface opening in which a shielding member having a length substantially equal to the lateral width of the door body slidably mounted on the floor is formed on the lower surface of the door body. It is characterized in that it is fitted in the groove of (1) so that it can move in the vertical direction and its movement in the horizontal direction is restricted, and that the shielding member is made of ultra-high molecular weight polyethylene in the above configuration. The present invention achieves an object of providing a lower airtight structure in a sliding door that is simple in structure and operation and has excellent durability.

[0006]

[Function] A shield member fitted in a groove formed on the lower surface of the door body has its lower end surface placed on the floor surface (or the sliding surface), and the lower surface of the door body and the floor surface (or the sliding surface). ) To close the gap formed with.

The shielding member moves in the left-right direction together with the door body, and also moves in the up-and-down direction in accordance with the unevenness of the floor surface (or the sliding surface) to move between the lower surface of the door body and the floor surface (or the sliding surface). It is possible to prevent a gap from being generated and to push the door upward.

[0008]

Embodiments of the present invention will now be described with reference to the drawings.

FIGS. 1 to 4 show an example in which the present invention is applied to a one-way pulling type sliding door device, which is installed on an upper frame 2a of an opening frame 2 formed on a wall surface 1. Rails 4 are arranged in the eye 3 in the left-right direction.

A door body 5 is suspended on the rail 4 via a suspension vehicle 6 projecting from the upper surface 5a thereof so as to be movable in the left and right directions.

On the passage surface of the door body 5 on the floor surface 7, a guide roller 8 is provided so as to protrude near the center thereof.
On the lower surface 5b, a groove 9 which is open on the lower surface for fitting the guide roller 8 is formed over substantially the entire length in the left-right direction.

On the room 10 side of the groove 9, a narrow groove 11 having an open lower surface is formed over the entire length of the door body 5 in the left-right direction.

These grooves 9 and 11 are a mold member 12 having a U-shaped cross section and a mold member 13 having an L-shaped cross section disposed inside thereof.
It is composed of and and the door end closing plate 14 is provided at the open end of both ends.
Is removably attached by a set screw 14a.

A plate-shaped shield member 15 made of, for example, ultra-high molecular weight polyethylene is fitted in the groove 11 to hermetically seal a gap formed between the lower surface 5b of the door body 5 and the floor surface 7. I'm out.

The shielding member 15 has a lateral width substantially equal to that of the groove 11 and is slidably placed on the floor surface 7. The side end of the groove 11 is removed by removing the door buttocks closing plate 14. It is installed by inserting it from the open part exposed at.

Further, on the upper surface 5a of the door body 5, there are two groove members 17 and 19 having an L-shaped cross section, which are grooved 17 similar to the grooved groove 11 whose width is narrow and whose lower surface is opened along the edge on the indoor side. A plate-shaped shield member 20 similar to the shield member 15 is fitted into the groove 17.

The lower end surface of the shielding member 20 is in contact with a smooth strip-shaped horizontal surface 21 formed inwardly of the blind 4 and extending in the left-right direction, and between the blind 4 and the upper surface 5a of the door body 5. Is airtight.

Since the horizontal surface 21 with which the lower end surface of the shielding member 20 contacts is parallel to the rail 4, the lower end surface of the shielding member 20 is always in contact with the horizontal surface 21 even if the door body 5 moves. Therefore, unlike the shielding member 15, the shielding member 20 does not need to be fitted in the groove 11 so as to be movable in the vertical direction, and may be fixed to the groove 17.

FIG. 4 shows an example of the airtight structure of the door body 5 in the left-right direction. The vertical frame 2b on the door-stop side which forms the opening frame 2 on the door-stop side and the side surface on the retracting side of the door body 5 are shown. Band-shaped shielding members 22 and 23 extending in the vertical direction are attached to 5c, respectively, and when the door body 5 is closed, these shielding members 22 and 23 are in contact with the side surface 5c of the door body 5 and the vertical frame 2b, respectively, and are airtight. Keep

On the other hand, the airtight structure on the side opposite to the door stop includes the shielding member 24 having a substantially V-shaped cross section and extending along the outside of the other vertical frame 2c forming the opening frame 2 and the door body 5. The door member 5 includes a shielding member 25 attached by projecting a projecting piece 25a toward the vertical frame 2c along the side surface 5d on the retracted side.
When closed, the shielding member 24 and the shielding member 25 are in contact with each other to maintain airtightness.

According to the present embodiment, the shielding member 15 fitted in the groove 11 formed on the lower surface 5b of the door body 5 has its lower end surface 15a in contact with the floor surface 7 (or the sliding surface), so that both Since the gap formed between them is closed, the lower part of the sliding door can be kept airtight.

Further, the shielding member 15 moves together with the opening and closing of the door body 5 while sliding on the floor surface 7, and at this time, it can move up and down, so that even if the floor surface 7 is uneven, there is no problem. It is also possible to prevent the door body 5 from being pushed up.

Further, in this embodiment, since the end portion of the groove 11 is opened and the door bottom closing plate 14 is detachably attached to this portion by the set screw 14a, the shielding member 15
Can be easily attached or removed. Therefore, it is extremely easy to manufacture, maintain and repair.

In particular, when the shielding member 15 is made of ultra-high molecular weight polyethylene as in this embodiment, excellent durability and airtightness are exhibited, but the shielding member 15 is made of other conventionally known shielding materials. You may form.

In this embodiment, the present invention is applied to the pulling door device of the pulling type in which the guide rollers 8 are arranged on the floor surface 7. However, for example, a guide rail is arranged on the floor surface 7. It is needless to say that the sliding door device having the above-mentioned structure and further the sliding door device of other types such as the double-opening sliding door device can be similarly implemented.

Further, although the shielding member 15 is plate-shaped, it is fitted in a groove formed in the lower surface of the door body so as to be movable in the vertical direction and restricted in the lateral movement. Other shapes such as an elongated columnar shape may be used as long as they close the gap between the lower surface of the door body and the floor door.

[0027]

According to the present invention, the lower part of the sliding door can be kept airtight without having a complicated structure, which is not only advantageous in manufacturing and economic aspects, but also in the operation, the pulling mechanism of the door body and the dropping mechanism. It is very easy to use and can be opened and closed normally without the need for jamming. Further, it has excellent durability and can be easily maintained and repaired.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is an enlarged vertical cross-sectional view with a part omitted along line YY of FIG.

FIG. 3 is a partial exploded perspective view showing a main part of the embodiment shown in FIG.

FIG. 4 is an enlarged vertical cross-sectional view with a part omitted along line XX in FIG.

[Explanation of symbols]

 2 Opening 4 Rail 5 Door 5a Upper surface 5b Lower surface 7 Floor 11 Groove 15 Shielding member

Claims (2)

[Claims] 1. A lower airtight structure of a sliding door type sliding door in which a door is movably suspended on a rail installed on an upper frame of an opening frame, and slidably mounted on a floor surface. A shielding member having a length substantially equal to the lateral width of the door body is fitted in a groove formed on the lower surface of the door body, which is openable on the lower surface in a vertically movable manner and restricted in the lateral movement. Lower airtight structure in the sliding door characterized by being. 2. The lower airtight structure in the sliding door according to claim 1, wherein the shielding member is made of ultra high molecular weight polyethylene.