Fire door

Patent metadata

Field	Value
Publication number	US-9670715-B2
Application number	US-201615159923-A
Country	US
Kind code	B2
Filing date	May 20, 2016
Priority date	May 21, 2015
Publication date	Jun 6, 2017
Grant date	Jun 6, 2017

Abstract

A door body includes a door main body, an upper guided portion provided to an upper portion of the door main body, and a lower guided portion provided to a lower portion of the door main body. A guide member includes an upper guide portion, a lower guide portion, and a restricting portion. The upper guide portion supports the upper guided portion from below while restricting movement of the upper guided portion along the fore and aft direction. The lower guide portion supports the lower guided portion from below while restricting movement of the lower guided portion along the fore and aft direction. The upper guided portion is moved upwardly away from the upper guide portion in the expanded support state. The restricting portion restricts movement of the door main body in the first direction in the expanded support state, and restricts movement of the door main body in the second direction in the expanded support state.

First claim

What is claimed is:

1. A fire door comprising:
a plate-shaped door body movable from an open position at which an opening is open to a closed position at which the opening is closed by the door body;
a guide member for guiding movement of the door body;
wherein the door body is disposed in an attitude in which the door body extends along a vertical direction of the opening and along a lateral direction of the opening, the door body being movable along the lateral direction from the open position to the closed position,
wherein, with a direction perpendicular to the lateral direction as seen along the vertical direction being defined as a fore and aft direction,
wherein the door body includes a door main body, an upper guided portion provided to an upper portion of the door main body, and a lower guided portion provided to a lower portion of the door main body,
wherein the guide member includes an upper guide portion for guiding the upper guided portion along the lateral direction, a lower guide portion for guiding the lower guided portion along the lateral direction, and a restricting portion for restricting movement of the door main body along the fore and aft direction,
wherein the upper guide portion supports the upper guided portion from below while restricting movement of the upper guided portion along the fore and aft direction,
wherein the lower guide portion supports the lower guided portion from below while restricting movement of the lower guided portion along the fore and aft direction,
wherein the door body is so dimensioned that the upper guided portion is moved upwardly away from the upper guide portion when in an expanded support state in which the lower guide portion is supporting the lower guided portion from below and in which the door main body has expanded from an initial form due to heat from a fire,
wherein the restricting portion includes a first restricting portion and a second restricting portion,
wherein, with one direction along the fore and aft direction being defined as a first direction and a direction along the fore and aft direction that is opposite from the first direction being defined as a second direction,
wherein the first restricting portion includes a first contact portion which overlaps with an upper end portion of the door main body as seen along the fore and aft direction when in the expanded support state,
wherein, when in the expanded support state, the first contact portion restricts movement of the door main body in the first direction by coming into contact with a surface of the upper end portion of the door main body that faces in the first direction,
wherein the second restricting portion includes a second contact portion which overlaps with an upper end portion of the door main body as seen along the fore and aft direction when in the expanded support state, and
wherein, when in the expanded support state, the second contact portion restricts movement of the door main body in the second direction by coming into contact with a surface of the upper end portion of the door main body that faces in the second direction.

2. The fire door as defined in claim 1 , wherein the restricting portion includes a connecting portion which is located above the door main body and which connects the first restricting portion and the second restricting portion to each other, and
wherein the connecting portion is located at such a height that a gap is formed, along the vertical direction, between the door main body and the connecting portion in the expanded support state.

3. The fire door as defined in claim 1 , wherein the first restricting portion and the second restricting portion are so located to overlap with an upper end portion of the door main body as seen along the fore and aft direction, both in the expanded support state and in an initial support state in which the lower guide portion is supporting the lower guided portion from below and in which the door main body is in the initial form.

4. The fire door as defined in claim 1 , wherein the restricting portion includes a third restricting portion, a fourth restricting portion, and a second connecting portion,
wherein the third restricting portion includes a third contact portion which overlaps with a lower end portion of the door main body as seen along the fore and aft direction when in the expanded support state,
wherein, when in the expanded support state, the third contact portion restricts movement of the door main body in the first direction by coming into contact with a surface of the lower end portion of the door main body that faces in the first direction,
wherein the fourth restricting portion includes a fourth contact portion which overlaps with an lower end portion of the door main body as seen along the fore and aft direction when in the expanded support state,
wherein, when in the expanded support state, the fourth contact portion restricts movement of the door main body in the second direction by coming into contact with a surface of the lower end portion of the door main body that faces in the second direction,
wherein the second connecting portion is located below the door main body and connects the third restricting portion and the fourth restricting portion to each other, and
wherein a position of the second connecting portion along the vertical direction is such a position that a gap is formed, along the vertical direction, between the door main body and the second connecting portion, when in an initial support state in which the lower guide portion is supporting the lower guided portion from below and in which the door main body is in the initial form.

5. The fire door as defined in claim 1 , wherein each of the upper guided portion and the lower guided portion includes one or more guide rollers, each of which rotates about an axis that extends along the fore and aft direction.

6. The fire door as defined in claim 1 , wherein the opening is formed in a wall for dividing an area into a plurality of areas, and wherein a ceiling transport vehicle is provided which travels through the opening to travel between the plurality of areas.

Assignees

• Daifuku Kk

Inventors

• Hosaka Yoshihiro

Classifications

• E06B5/167 Primary

  Devices blocking doors or windows inside its frame in case of fire · CPC title

• E06B11/026

  horizontally · CPC title

• E05Y2900/134

  Fire doors · CPC title

• E06B5/161

  Profile members therefor · CPC title

• E05D15/0656

  Bottom guides · CPC title