JPH08312262A - Device for guiding lower part of fireproof door - Google Patents

Abstract

PURPOSE: To surely shut out fires and to allow normal opening and closing movement to be made smoothly. CONSTITUTION: A bracing piece 6 is provided in such a way as to hang from the lower part of a sliding door 5, and a guide groove 7 into which the bracing piece 6 is freely slidably fitted along a direction for opening and closing the sliding door 5 is formed in the floor portion 1a of a frontage 1. A through hole 6a is provided in the bracing piece 6, and a pin-shaped thermosetting resin material 9 having both ends 9a, 9b formed into spherical shapes is fitted into the through hole 6a. Since the frictional resistance between the bracing piece 6 and the guide groove 7 can be reduced by the thermosetting resin material 9, the sliding door 5 is easy to open and close. Also, the thermosetting resin material 9 is not ignited by fires and can surely shut out fires between the bracing piece 6 and the guide groove 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lower guide device for a fire door installed in a frontage of a building.

[0002]

2. Description of the Related Art Conventionally, in a sliding door type fire door, which normally opens and closes as a sliding door and closes in the event of a fire to act as a fire door, a swing stop piece is provided at the bottom of the sliding door that is slidably suspended without eyes. , A guide groove extending in the sliding direction of the sliding door is formed on the floor surface directly below the sliding door, and the swing stop piece is configured to be slidably contacted with the inside of the guide groove to guide the sliding door. A swing of the lower portion of the sliding door in the door thickness direction during the opening / closing operation is prevented.

[0003]

However, in the above-exemplified device, a steel plate is applied as the anti-vibration piece in order to secure a high degree of fire resistance, while the guide groove is
It is formed by embedding a steel material having an upward groove-shaped cross-sectional shape in the floor surface. For this reason, the metals come into contact with each other, and the frictional resistance between the anti-vibration piece and the guide groove is large, and this frictional resistance hinders the opening / closing operation of the sliding door during normal operation. Therefore, it was proposed to form a sliding surface made of a synthetic resin material on both sides of the anti-vibration piece to smoothly perform the opening / closing operation under normal conditions, but this synthetic resin material catches fire when a fire occurs. Since the flame is emitted from the lower part of the sliding door, there is a problem that it does not meet the certification criteria for Class A fire doors stipulated in the Building Standard Act Enforcement Order. It should be noted that the Building Standard Law Enforcement Ordinance requires a high level of fire resistance as a class A fire door, and flames are not allowed to blow out from the fire door.

An object of the present invention is to provide a lower guide device for a fire door which can reliably shut off a flame and can smoothly perform a normal opening / closing operation.

[0005]

A lower guide device for a fire door according to a first aspect of the present invention is provided with a swinging piece that is hung from a lower portion of a sliding door that is slung open and closed and a swinging portion that is formed on a floor portion. A lower guide device for a fire door comprising a guide groove into which a piece is slidably inserted in the opening / closing direction of a sliding door, wherein a vibration-proof piece is provided, and a thermosetting resin material is provided on both side surfaces of the anti-slip piece for sliding contact with the inner surface of the guide groove. It is a metal plate.

A lower guide device for a fire door according to claim 2 is
A through hole that penetrates both sides of the anti-vibration piece is formed, and a pin-shaped thermosetting resin material is inserted into the through-hole so that both ends of the thermo-setting resin material project from both sides of the anti-vibration piece. Is.

A lower guide device for a fire door according to claim 3 is:
The thermosetting resin material is arranged on the anti-vibration piece at predetermined intervals along the opening / closing direction of the sliding door.

A lower guide device for a fire door according to claim 4 is:
The above-mentioned swing stop pieces are arranged at both lower ends of the sliding door.

[0009]

According to the lower guide device for a fire door of claim 1, since the anti-vibration piece is a metal plate provided with a thermosetting resin material on both sides of the guide surface, the thermosetting resin material is in sliding contact with the inner surface of the guide groove. The material can reduce the frictional resistance between the anti-vibration piece and the guide groove. Further, since the thermosetting resin material is a material that is hardened by heat, it hardly emits a flame even if it is ignited by a fire.

A lower guide device for a fire door according to claim 2 is
Through holes are formed in the anti-vibration piece so as to penetrate the both sides, and pin-shaped thermosetting resin material is inserted into the through-hole so that both ends thereof protrude from both side surfaces of the anti-vibration piece. , Less thermosetting resin material, less flame emission.

A lower guide device for a fire door according to claim 3 is
Since the thermosetting resin material is arranged on the anti-vibration piece at predetermined intervals along the opening / closing direction of the sliding door, it is possible to minimize the mounting location of the thermosetting resin material.

A lower guide device for a fire door according to claim 4 is
Since the swing stop pieces are arranged on both sides of the sliding door, it is possible to reliably prevent swinging of the sliding door in the door thickness direction without forming the swing stop pieces in an elongated shape extending in the opening / closing direction of the sliding door.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a lower door guide device for a fire door according to an embodiment of the present invention has a pair of vertical frames 2 arranged on both sides of the frontage 1, and the pair of vertical frames 2 are seamless Multiply by 3,
The kill doors 4 are fixed by fitting on both sides between the floor portion 1a of the frontage 1 and the eyeless 3, and a draw-type sliding door 5 is slidable in the eyeless 3 in the longitudinal direction of the eyeless. It is attached to a fire door that is suspended so as to prevent the lower part of each sliding door 5 from swinging in the direction of the door thickness. That is, as shown in FIGS. 2 and 3, a swing stop piece 6 is provided in a lower portion of the sliding door 5, and the swing stop piece 6 is provided on the floor portion 1 a of the frontage 1 in the opening / closing direction of the sliding door 5. A lower frame 8 having a guide groove 7 which is slidably fitted on the upper surface is embedded.

The sliding door 5 has a rectangular frame 5 in a front view.
a and a heat-resistant glass plate 5b fitted inside the frame 5a
A packing material 5c interposed in the gap between the heat-resistant glass plate 5b and the frame 5a for blocking flames, a bracket 5e fixed to the upper end of the sliding door body 5a by a bolt 5d, and the bracket 5e. And a suspension roller 5f rotatably attached to the upper end of the.

As shown in FIGS. 3 and 4, the anti-vibration pieces 6 are fixed to the lower ends of the frame 5a of the sliding door 5 by bolts (not shown), and go straight to the guide groove 7. Is a rectangular metal plate having two through holes 6a penetrating in the direction indicated by the arrow and a screw hole 6b communicating with each of the through holes 6a opened at the lower end surface. The through hole 6a
A pin-shaped thermosetting resin material 9 is fitted in the both ends 9a and 9b with both end portions 9a and 9b protruding from both side surfaces of the anti-vibration piece 6. Further, both ends 9a and 9b of the thermosetting resin material 9 are formed in a spherical shape, and the body portion is pressed by a fixing screw (not shown) screwed into the screw hole 6b of the vibration blocking piece 6. .

As shown in FIG. 2, the seamless portion 3 has a main body portion 3a opened on the front and bottom surfaces thereof, and the main body portion 3a.
A cover 3c rotatably attached to the front surface of a through a hinge portion 3b in a vertical direction, a reinforcing member 10 extending in the entire longitudinal direction along an inside corner of the main body portion 3a, and the main body portion. A slide rail 11 is supported in a horizontal posture in a bracket 3d via a bracket 3d and locks a suspension roller 5f of the sliding door 5 in a rollable manner. Although not shown, a drive device for driving the sliding door 5 to open and close and an automatic closing device for closing the sliding door 5 in the event of a fire are housed in the seamless space 3.

As shown in FIGS. 1 and 2, the fitting door 4 has a rectangular frame 4a in a front view, a heat-resistant glass plate 4b fitted inside the frame 4a, and the heat-resistant glass plate 4b. It is composed of a packing material 4c which is interposed in a gap between the glass plate 4b and the frame body 4a so as to block a flame. Further, the upper portion of the frame body 4 a of the fitting kill door 4 is fixed to the lower surface of the seamless member 3. On the other hand, an upward groove 12 is formed on the upper surface of the lower frame 8 in parallel with the guide groove 7.
The lower portion of the frame body 4a is fitted into the frame 2.

In addition, in the above-mentioned embodiment, the swing stop pieces 6 are arranged at both lower ends of the sliding door 5, but as shown in FIG.
You may provide in the lower part of the said sliding door 5 all over the longitudinal direction. The arrangement and number of the thermosetting resin material 6 are not particularly limited.

[0019]

According to the lower guide device for a fire door of claim 1, the thermosetting resin material can reduce the frictional resistance between the anti-vibration piece and the guide groove, so that the sliding door can be easily opened and closed under normal conditions. is there. Moreover, since the thermosetting resin material is flame-retardant and hardens by heat, it hardly emits a flame even if it is ignited by a fire, and a flame is ejected from between the vibration isolator and the guide groove. Can be reliably prevented.

According to the lower guide device for a fire door of claim 2, the thermosetting resin material is less, the manufacturing is easy, and when the thermosetting resin material is worn, it can be easily replaced and maintained. Maintenance is convenient.

According to the lower guide device for a fire door of claim 3, in the case where the entire vibration-proof piece is formed of a thermosetting resin material, or when the thermosetting resin material is attached to the entire side surfaces of the vibration-proof piece. By comparison, it is possible to minimize the area of the sliding portion and effectively reduce the frictional resistance between the anti-vibration piece and the guide groove. Moreover, depending on the type of the thermosetting resin material, there is a material that slightly burns in the initial stage of curing, but the size of the flame generated by this can be minimized.

According to the lower guide device for a fire door of claim 4, the swinging piece is surely prevented from swinging in the thickness direction of the sliding door without forming the swinging piece into an elongated shape extending in the opening / closing direction of the sliding door. it can. Therefore, since the weight of the sliding door can be reduced, it can be applied to a sliding door type fireproof automatic door which is normally used as an automatic door and automatically closes when a fire occurs to function as a fireproof door.

[Brief description of drawings]

FIG. 1 is a front view of a fire door to which a lower guide device for a fire door according to an embodiment of the present invention is applied.

2 is a cross-sectional view taken along the line AA of FIG. 1 showing a state in which a sliding door is opened.

FIG. 3 is a sectional view of a B part in FIG.

FIG. 4 is a front view of a lower guide device for a fire door according to an embodiment of the present invention.

FIG. 5 is a front view showing a modified example of the lower guide device for the fire door of the embodiment of the present invention.

[Explanation of symbols]

 1a Floor part 5 Sliding door 6 Shaking piece 7 Guide groove 9 Thermosetting resin material

Claims (4)

[Claims] 1. A swing stop piece hanging from a lower portion of a sliding door that is slidably opened and slid open and closed, and a guide groove formed on a floor portion for slidably fitting the swing stop piece in the opening and closing direction of the sliding door. A lower guide device for a fire door, wherein the anti-vibration piece is a metal plate provided with a thermosetting resin material that is in sliding contact with the inner surface of the guide groove on both side surfaces of the fire door. Lower guidance device. 2. A through-hole penetrating both side surfaces of the anti-vibration piece is formed in the anti-vibration piece, and a pin-shaped thermosetting resin material is projected into the through-hole from both side surfaces of the anti-vibration piece. The lower guide device for the fire door according to claim 1, wherein the lower guide device is inserted as described above. 3. The lower guide device for a fire door according to claim 1, wherein the thermosetting resin material is arranged on the anti-vibration piece at predetermined intervals along the opening / closing direction of the sliding door. 4. The lower guide apparatus for a fire door according to claim 1, wherein the swing stop pieces are arranged at both lower ends of the sliding door.