JP2010281173A - Fire door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fire door which is fitted with glass, enables an installation to be smoothly performed without using heat-resisting plate glass, can exhibit excellent fire-preventive function, can suppress a predetermined approval cost, and can secure excellent visibility. <P>SOLUTION: A plurality of panes of glass 12 are mounted on both sides of a door body 11 in such a manner as to cover an opening 20. A metal shield plate 13 is housed in the door body 11, and moved in the vertical direction so as to be moved from a retreat position coming out of the opening 20 to a shielding position disposed between the plurality of panes of glass 12 in such a manner as to shield the opening 20. A shield plate driving means 15 moves the shield plate 13 from the retreat position to the shielding position along with the fall of a weight 25 when an operation means 14 is operated. The vertical length dimensions of the opening 20 and the panes of glass 12 are half the vertical length dimension of the door body 11 or longer. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a fire door for shielding a flame, and relates to a fire door to which glass is attached.

  Conventionally, regarding a fire door for shielding a flame, there is known a fire door to which glass is attached for the purpose of improving visibility and enabling daylighting (for example, see Patent Document 1). The fire door disclosed in Patent Document 1 includes a heat-resistant plate glass whose outer periphery is supported by a refractory steel material.

Japanese Patent Laid-Open No. 5-287611

  By using a heat-resistant plate glass like the fire door disclosed in Patent Document 1, it is possible to achieve the purpose of visibility and lighting even in the fire door. However, in a fire door using a heat-resistant plate glass, it is necessary to perform a fire resistance test for about one hour in order to obtain a predetermined certification, which is costly. In addition, in the case of a fire door using heat-resistant plate glass, it is necessary to construct it by a specialist who specializes in handling heat-resistant plate glass. For this reason, there are problems that there are many restrictions on the selection of contractors during construction, and that smooth construction is difficult and further increases construction costs. Therefore, it is desirable to realize a fire door structure in which glass is attached and the visibility and lighting are ensured without using heat-resistant glass. Furthermore, in order to realize such a fire door, it is necessary to be able to demonstrate an excellent fire prevention function that can sufficiently shield the flame, and by adopting a structure that can be handled by structure certification, regardless of the fire resistance test, It is also desirable to reduce the predetermined certification cost. And about the opening formed in a door main body, and the glass which covers this opening, it is desired that the dimension structure is set so that visibility may be favorable and more favorable visibility is ensured.

  In view of the above circumstances, the present invention relates to a fire door with a glass attached, without using heat-resistant plate glass, can facilitate the construction, can exhibit an excellent fire prevention function and can suppress a predetermined certification cost, It aims at providing the fire door which can ensure favorable visibility.

  The fire door according to the first invention for achieving the above object relates to a fire door for shielding a flame. The fire door according to the first invention is formed as a door main body in which an opening is formed, glass attached to cover the opening on both sides of the door main body, and a metal plate-like member, A shield that is housed inside the door body and arranged to face the glass so as to shield the opening from a retracted position that is retracted to a position away from the opening by moving along the horizontal direction. A shielding plate that moves to a position; an operating means that operates in response to the occurrence of a fire; and a shielding plate driving means that moves the shielding plate from the retracted position to the shielding position when the operating means is activated, The opening and the glass covering the opening are formed such that the length dimension in the vertical direction is not less than half the length dimension in the vertical direction of the door body. And features.

  According to this invention, since the glass is attached so as to cover the openings on both sides formed in the door main body, it is possible to ensure visibility and daylighting. Further, a metal shielding plate is accommodated in the door body so as to be movable in the horizontal direction. When the operating means that operates in response to the occurrence of a fire is activated, the shielding plate driving means is activated, and the shielding plate moves from the retracted position away from the opening to the shielding position that shields the opening. For this reason, when a fire occurs, the opening is shielded by a metal shielding plate, and even if the glass breaks due to the progress of the fire, an excellent fire prevention function that can sufficiently shield the flame can be exhibited. And since the opening can be shielded based on the operation of the operation means, it is possible to realize a fire prevention function without using fireproof glass, and it is only necessary to obtain the structure certification specified by the Enforcement Ordinance of the Building Standard Law, and the result that the fireproof test is not required. Certification costs can be reduced. In addition, according to the present invention, the glass to be attached to the opening need not be a heat-resistant plate glass, so that a fire door with a view and lighting secured can be realized without using the heat-resistant plate glass. And since it is not necessary to use heat-resistant plate glass, there are no restrictions on the selection of contractors during construction, smooth construction can be realized, and increase in construction costs can be suppressed. Moreover, since general glass which is not heat-resistant plate glass can be used, the cost can be significantly reduced as compared with the case where heat-resistant plate glass is used. Further, according to the present invention, the opening of the door body and the glass covering the opening are formed such that the length dimension in the vertical direction is not less than half the length dimension in the vertical direction of the door body. . For this reason, it is possible to set the area of the opening to which the glass is attached to be sufficiently wide so that the line of sight can be improved, and to ensure good visibility equivalent to that of a fire door using heat-resistant glass. it can. In addition, since the opening and the glass are formed so as to be more than half the length of the door body, it is possible to reliably ensure visibility at least below the center of the door body. Visibility can be improved.

  Therefore, according to the present invention, with respect to the fire door with glass attached, it is possible to facilitate the construction without using a heat-resistant plate glass, to exhibit an excellent fire prevention function and to suppress a predetermined certification cost, and to have good visibility. Can be provided.

  The fire door according to a second aspect of the present invention is the fire door of the first aspect, wherein the shielding plate driving means has a weight portion that falls by gravity and a connecting portion that connects the weight portion to the shielding plate, and the operating means. When the is actuated, the shielding plate is moved from the retracted position to the shielding position as the weight part falls.

  According to the present invention, when the actuating means is actuated, the shield plate driving means is actuated to drop the weight portion, so that the shield plate connected to the weight portion shields the opening from the retracted position outside the opening. Move to position. Since the opening can be shielded by dropping the weight portion based on the operation of the operation means, a fire prevention function can be realized with a simple structure, and the complication of the structure can be suppressed. Moreover, since the freedom degree of arrangement | positioning of a weight part becomes high compared with what uses a spring and an inclination rail, space can be used effectively.

  A fire door according to a third aspect of the present invention is the fire door of the second aspect, wherein at least a part of at least one side of the door structure formed by attaching the glass to the door body is the interior of the door structure. It is characterized by being provided as an opening / closing part that is openable and closable so as to be openable to the outside.

  According to this invention, the door structure is provided with an openable / closable portion that can be opened and closed so that the interior thereof can be opened. For this reason, when performing the installation work of the shielding plate, the operating means, and the shielding plate driving means arranged inside the door main body or the maintenance work thereof, the opening / closing part can be opened and closed without disassembling the door main body. These operations can be easily performed.

The fire door according to a fourth aspect of the present invention is the fire door of the third aspect, wherein the opening / closing part includes the glass.

  According to this invention, the glass which covers the opening of the door body is opened and closed in the door structure as all or part of the opening and closing part, and the opening and closing part is not constituted only by the part other than the glass. For this reason, the influence on the intensity | strength of the door main body accompanying opening / closing part can be minimized, or it can eliminate.

  A fire door according to a fifth aspect of the present invention is the fire door of the fourth aspect, wherein the upper end side roller rotatably attached to the upper end portion of the shielding plate and the upper end side roller rotatably attached to the lower end portion of the shielding plate. A lower end side roller, an upper guide rail that is disposed so as to extend in the horizontal direction in the door main body, and the upper end side roller is in contact with the lower side so as to be able to roll in the horizontal direction, and the door main body And a lower guide rail that is disposed so as to extend horizontally below the upper guide rail, and that the lower end side roller abuts from above and is movably engaged in the horizontal direction. It is characterized by that.

  According to this invention, the upper end side roller and the lower end side roller which are each rotatable are attached to the upper-lower-end part of a shielding board. These rollers are movably engaged with both rails between an upper guide rail and a lower guide rail provided so as to extend horizontally in the vertical direction of the door body. It is supported in a state where reaction force is generated. Thereby, the shielding plate can move smoothly in the horizontal direction in a stable posture without breaking and tilting the posture extending in the vertical direction between the upper and lower guide rails. It can move smoothly and shield the opening. One upper end roller and one lower end roller may be provided. However, in order to maintain a more stable posture, a plurality of upper end rollers and a lower end roller are preferably provided.

  A fire door according to a sixth aspect of the present invention is the fire door of the fourth aspect, wherein the suspension roller is rotatably attached to the upper end portion of the shielding plate, and is arranged to extend in the horizontal direction in the door body. And a suspension guide rail in which the suspension roller abuts from above so as to be suspended so that the shielding plate is suspended, and engages so as to be able to roll in the horizontal direction, and horizontally in the door body below the suspension guide rail. The shielding plate restricts the amount of displacement of the lower end portion of the shielding plate in the front-rear direction, which is a direction perpendicular to both the vertical direction and the horizontal direction that is the moving direction of the shielding plate. And a guide portion for guiding the horizontal movement of the lower end portion of the plate.

  According to the present invention, the door main body has a suspension guide rail rotatably mounted on the upper end portion of the shielding plate and is suspended by the rolling guide rail, and the lower end portion of the shielding plate horizontally. Guide portions for guiding only the movement in the direction are provided so as to extend in the horizontal direction along the vertical direction. For this reason, the shielding plate is supported between the suspension guide rail and the guide portion while being suspended and guided in the horizontal movement direction. As a result, the shielding plate can move smoothly in the horizontal direction with a stable posture without tilting the vertically extending posture, and can smoothly move to the shielding position and shield the opening. . Although one suspension roller may be provided, it is desirable that a plurality of suspension rollers be provided in order to maintain a more stable posture.

  A fire door according to a seventh aspect of the present invention is the fire door of the fourth aspect of the invention, a pair of central rollers that are rotatably attached to a central portion on at least one side of the shielding plate and arranged side by side in the vertical direction, A central guide rail that is disposed so as to extend in the horizontal direction in the door body, and that the pair of central rollers are in contact with both sides in the vertical direction so as to be able to roll in the horizontal direction. It is characterized by.

  According to this invention, a pair of rotatable central rollers are attached to the central portion of the shielding plate. And these rollers are supported in a state in which a force is generated to nip between the both sides in the up-down direction while being slidably engaged with a central guide rail provided in the door body so as to extend in the horizontal direction. Is done. As a result, the shielding plate can move smoothly in the horizontal direction with a stable posture without tilting the vertically extending posture, and can smoothly move to the shielding position and shield the opening. . One pair of central rollers may be provided (that is, only one pair). However, in order to maintain a more stable posture, a plurality of (that is, a plurality of pairs) are preferably provided. .

  A fire door according to an eighth invention is the fire door according to any one of the fourth to seventh inventions, wherein the door body is disposed along the vertical direction inside the door body, and supports a panel member on both sides. The column member is provided with a column built-in column member in which a space in which the column unit can fall and move is formed on the inside.

  According to the present invention, a pillar member that extends in the vertical direction and supports the panel body is provided as a strength member in the door main body, and a built-in weight portion in which a space in which the weight portion can fall and move is formed as the pillar member. A column member is provided. For this reason, the space in which the strength member is arranged in the door body and the space in which the weight portion falls and moves can be used together, and the space in the door body can be efficiently utilized.

  A fire door according to a ninth aspect of the present invention is the fire door of the eighth aspect, characterized in that the weight part built-in column member is formed such that an inner wall surface guides a falling movement direction of the weight part. .

  According to the present invention, since the falling movement direction of the weight part is guided by the inner wall surface of the weight part built-in column member, the occurrence of shaking during the falling movement of the weight part is suppressed, and the operation of the shielding plate driving means can be performed more quickly. Can be performed smoothly.

  A fire door according to a tenth aspect of the present invention is the fire door of the fourth to ninth aspects, wherein the actuating means connects the shielding plate side and the door body side, and is blown by exceeding a predetermined temperature. And a thermal fuse member for releasing the connection between the shielding plate side and the door body side.

  According to the present invention, the operating means is provided as a temperature fuse member that is melted when the temperature exceeds a predetermined temperature and releases the connection between the shielding plate side and the door body side, and an electric drive control means such as a smoke detector or a solenoid. The shielding plate driving means is configured to be operated without the intervention. Therefore, since it is a mechanical type, the operational reliability can be further improved.

  A fire door according to an eleventh aspect of the present invention is the fire door according to the fourth to tenth aspects of the present invention, wherein the shielding plate is disposed around the opening in the door main body with the shielding plate moved to the shielding position. And an inner wall proximity portion having a portion extending in a direction approaching the inner wall of the door main body and close to the inner wall of the door main body through a gap is provided. By moving to the position, a space path that communicates between both sides of the opening inside the door main body passes between the inner wall of the door main body and the inner wall proximity portion and is a straight line that connects both sides of the opening. It is formed as a detour route that detours with respect to the direction.

According to the present invention, the shielding plate is provided with the inner wall proximity portion that extends toward the inner wall of the door body around the opening at the shielding position and is close to the inner wall. At the shielding position, a detour path that bypasses the linear direction connecting the both surfaces of the opening via the space between the inner wall of the door main body and the inner wall adjacent portion is formed as a space path that communicates both surfaces of the opening. The For this reason, even if a glass breaks in a state where the opening is shielded due to a fire, the flame passes through a narrow space between the inner wall of the door main body and the inner wall adjacent portion in order to pass through the opening. At the same time, a detour route must be passed. Thereby, the passage of the flame is efficiently blocked by the narrow space between the inner wall of the door main body and the inner wall proximity portion and the bypass path. Therefore, it is possible to realize a more excellent fire prevention function that can shield the flame efficiently.

  A fire door according to a twelfth aspect of the present invention is the fire door of the eleventh aspect, wherein the inner wall proximity portion is provided as a bent plate-shaped portion.

  According to this invention, since the inner wall proximity portion is provided as a plate-like portion formed by bending, a narrow space path between the inner wall of the door main body and the inner wall proximity portion is adjusted by adjusting the position and number of the bending portions. It is possible to easily realize a long detour path and a long detour path with a simple structure. Thereby, a flame can be shielded more efficiently.

  A fire door according to a thirteenth aspect of the present invention is the fire door according to any one of the fourth to twelfth aspects of the present invention, wherein the inner wall of the door body is provided along the periphery of the opening, and the shielding plate is at the shielding position. A shield plate proximity portion that has a portion extending in a direction approaching the shield plate in a moved state and is close to the shield plate via a gap is provided, and the shield plate moves to the shield position. In the interior of the door main body, a path that communicates between both sides of the opening passes around between the shielding plate and the shielding plate proximity portion and detours with respect to a linear direction that connects both sides of the opening. It is formed as a path.

  According to the present invention, the shielding plate proximity portion that extends toward the shielding plate at the shielding position and is close to the shielding plate is provided around the opening in the inner wall of the door body. At the shielding position, a detour path that bypasses the linear direction connecting the both surfaces of the opening via the space between the shielding plate and the shielding plate proximity portion is formed as a spatial path that communicates both surfaces of the opening. . For this reason, even if a glass breaks in a state where the opening is shielded due to a fire, the flame passes through a narrow space between the shielding plate and the shielding plate adjacent portion in order to pass through the opening. The detour route must also pass. Thereby, the passage of the flame is efficiently blocked by the narrow space between the shielding plate and the shielding plate proximity portion and the detour path. Therefore, it is possible to realize a more excellent fire prevention function that can shield the flame efficiently.

  A fire door according to a fourteenth aspect of the present invention is the fire door according to any one of the fourth to tenth aspects of the present invention, wherein the shield plate includes the opening in the door body in a state where the shield plate is moved to the shield position. An inner wall proximity portion that is disposed along the periphery of the door body and has a portion extending in a direction approaching the inner wall of the door main body and close to the inner wall of the door main body through a gap. The shielding plate is provided along the periphery of the opening, and has a portion extending in a direction approaching the shielding plate in a state where the shielding plate is moved to the shielding position, and the shielding plate is interposed through a gap. A portion adjacent to the inner wall of the door body in the inner wall proximity portion is closer to the inner wall of the door body than a portion closest to the shielding plate in the shielding plate proximity portion. Close to the side Then, as the shielding plate moves to the shielding position, a space path that communicates both sides of the opening inside the door body passes between the shielding plate proximity portion and the inner wall proximity portion. It is formed as a detour path that detours in a straight line direction connecting both sides of the opening.

According to the present invention, the shielding plate is provided with the inner wall proximity portion, and the shielding plate proximity portion is provided around the opening in the inner wall of the door body. In addition, the inner wall proximity portion and the shielding plate proximity portion are intricately arranged so that the inner wall side of the inner wall proximity portion is located closer to the inner wall of the door body than the shielding plate side of the shielding plate proximity portion. Yes. At the shielding position, a detour path that bypasses the straight direction connecting the both surfaces of the opening via the space between the shielding plate proximity portion and the inner wall proximity portion is formed as a space route that communicates both surfaces of the opening. The For this reason, even if a glass breaks in a state where the opening has been shielded due to a fire, the flame must pass between the shielding plate proximity portion and the inner wall proximity portion that are arranged in an intricate manner in order to pass through the opening. It must pass through a narrow space and a detour route. As a result, the passage of the flame is efficiently prevented by the narrow space and the bypass path between the shielding plate proximity portion and the inner wall proximity portion arranged in an intricate manner. Therefore, it is possible to realize a more excellent fire prevention function that can shield the flame efficiently.

  According to the present invention, regarding a fire door with a glass attached, it is possible to facilitate the construction without using a heat-resistant plate glass, to exhibit an excellent fire prevention function, to suppress a predetermined certification cost, and to ensure good visibility. Can provide fire doors that can do.

It is a front view which shows the fire door which concerns on one embodiment of this invention. It is AA arrow sectional drawing of FIG. FIG. 3 is a cross-sectional view taken along line B-B in FIG. 2. It is sectional drawing which expands and shows the pillar member and its vicinity in the fire door shown in FIG. It is CC sectional view taken on the line of FIG. It is a front view which shows the state different from FIG. 1 of the fire door shown in FIG. It is DD sectional view taken on the line in FIG. FIG. 8 is a cross-sectional view taken along line EE in FIG. 7. It is sectional drawing corresponding to FIG. 7, Comprising: It is sectional drawing which shows the state to which the glass was damaged by the fire. FIG. 10 is a cross-sectional view taken along line F-F in FIG. 9. FIG. 8 is a cross-sectional view taken along line GG in FIG. 7. It is sectional drawing which expands and shows the action | operation means in the fire door shown in FIG. 2, and its vicinity. It is sectional drawing corresponding to FIG. 7, Comprising: It is sectional drawing which shows the state by which the opening-and-closing part was open | released. It is a schematic diagram which shows the modification regarding the structure which supports a shielding board so that a horizontal movement with respect to a door main body is possible. It is the partially expanded sectional view seen from the H line arrow position of FIG. It is a schematic diagram which shows the other modification regarding the structure which supports a shielding board so that a horizontal movement with respect to a door main body is possible.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. The present invention can be widely applied as a fire door for shielding a flame, and can be applied to any form of an automatic door and a manual door (a door that is manually opened and closed). be able to. Further, the present invention can be applied to various types of doors such as a swing door, a sliding door, and a folding door.

  FIG. 1 is a front view showing a fire door 1 according to an embodiment of the present invention. The fire door 1 shown in FIG. 1 is provided, for example, as a door that partitions the inside (inside the room) and the outside (outside the room) from a predetermined room. The fire door 1 is provided as, for example, a sliding door type automatic door, and is opened and closed by being driven to move in the horizontal direction by a door driving device (not shown). The fire door 1 may be used alone as one automatic door, or may be used as one door in a plurality of automatic doors. Moreover, the fire door 1 is not limited to a door that partitions the interior and the exterior, and may be provided as a door that is disposed in the middle of the passage and partitions the inside and the outside with respect to a predetermined area.

2 is a cross-sectional view taken along line AA in FIG. 1, and FIG. 3 is a cross-sectional view taken along line BB in FIG. As shown in FIG. 1 to FIG. 3, the fire door 1 includes a door body 11, a plurality of glasses 12, a shielding plate 13, an operating means 14, a shielding plate driving means 15, an upper end roller 21, a lower end roller 22, and an upper guide. A rail 23, a lower guide rail 24, a hinge portion 30 and the like are provided. The door main body 11 includes a panel body 16 on both sides, a column member 17, a horizontal frame 18, and the like. This door main body 11 is supported with respect to the building structure which is not shown in figure, and is supported so that it can move in the horizontal direction in the state arrange | positioned along the up-down direction. And the door main body 11 moves to a horizontal direction by the above-mentioned door drive device operating, and the fire door 1 is opened and closed. In addition, in FIG. 1, when the closing operation | movement by the fire door 1 is performed, the direction of the door tip side used as the front end side in the moving direction is shown by arrow P in the figure.

  The panel body 16 shown in FIGS. 1 to 3 is formed in a vertically long shape that is longer in the vertical direction than in the horizontal direction. The panel body 16 includes a panel body 16a disposed on the outdoor side and a panel body 16b disposed on the indoor side, and is formed of a steel plate material. In this embodiment, the case where the panel body 16 (16a, 16b) is formed by fixing a plurality of plate materials to each other is illustrated, but this need not be the case. The panel body 16 may be formed by bending the plate material.

  Further, the panel body 16a and the panel body 16b have a vertically long rectangular penetrating in which the long side direction extends in the vertical direction at a position biased toward one door end side (the side indicated by the arrow P in FIG. 1) in the horizontal direction. Openings 20 formed as holes are provided respectively. Thus, these openings 20 formed in the door main body 11 constitute a window of the fire door 1. Further, as well shown in FIG. 1, these openings 20 are formed so that the length dimension in the vertical direction is not less than half the length dimension in the vertical direction of the door body 11. In addition, in this embodiment, the case where the length dimension of the up-down direction of the opening 20 is set to about 80% of the length dimension of the up-down direction of the door main body 11 is illustrated. Further, the length dimension of the opening 20 in the left-right direction (that is, the horizontal direction parallel to the width direction of the panel body 16) is not more than about half the length dimension of the door body 11 in the left-right direction, for example, 3 minutes. However, in order to maximize the visibility, in this embodiment, the dimension is the length dimension in the left-right direction of the door body 11. It is formed so as to have a length dimension of about half of the length.

  The column members (17, 18) shown in FIGS. 1 and 2 are configured by a column member 17 and a column member 18 respectively disposed on both sides (left and right sides) in the horizontal direction in the door body 11. The column members (17, 18) are arranged along the vertical direction inside the door body 11, and support the panel bodies 16 (16a, 16b) on both sides (that is, the vertical strength of the door body 11). Member). Each column member (17, 18) is formed by bending a plurality of steel plate members and is fixed to the panel body 16.

  4 is an enlarged cross-sectional view showing the column member 17 and its vicinity in FIG. As shown in FIG. 4, one of the column members (17, 18) includes a vertical frame 17a and a weight steadying frame 17b. The vertical frame 17a is provided as a pair of bent plate members, is fixed to the panel body 16a and the panel body 16b inside the door body 11, and extends from the upper end side to the lower end side of the door body 11. Are arranged so as to extend long in the vertical direction. And the vertical frame 17a is comprised so that it may have a pair of plane part parallel to the panel body 16a and the panel body 16b. In addition, the space between a pair of plane part in the vertical frame 17a forms the space where the weight part 25 of the shielding plate drive means 15 mentioned later can fall and move.

The weight steadying frame 17b of the column member 17 is provided as a pair of bent plate members, is fixed to the vertical frame 17a, and extends in the vertical direction with a shorter length than the vertical frame 17a. Has been placed. And the weight steadying frame 1
7b is comprised so that it may have a pair of plane part orthogonal to the panel body 16a and the panel body 16b in the extension direction. In addition, the weight part steadying frame 17b is arrange | positioned corresponding to the range to which the weight part 25 of the shielding plate drive means 15 mentioned later falls. Thereby, when the weight portion 25 arranged between the pair of flat portions in the weight portion steady frame 17b is dropped and moved, the shake of the weight portion 25 in the horizontal direction along the width direction of the panel body 16 is prevented. Will be.

  The column member 17 includes the vertical frame 17a and the weight steadying frame 17b described above, and is formed so that the inner area of these frames (17a, 17b) is a hollow area having a substantially rectangular cross section. Thereby, the pillar member 17 constitutes the pillar part built-in pillar member of the present embodiment in which the space in which the weight part 25 of the shielding plate driving means 15 can fall and move is formed inside. In addition, the horizontal cross-sectional shape of the weight part 25 which will be described later is a shape along the horizontal cross-sectional shape of the inner wall of the frame (17a, 17b) of the column member 17, so that A certain column member 17 is formed such that the inner wall surface guides the falling movement direction of the weight portion 25.

  The horizontal frame 19 shown in FIG.1 and FIG.3 is arrange | positioned along the horizontal direction inside the door main body 11, and is a member (namely, supporting the panel body 16 (16a, 16b) of both surfaces with a pillar member (17,18)). , A horizontal strength member in the door body 11). The horizontal frame 19 is formed by bending a steel plate material, and is arranged at a plurality of locations in the vertical direction in the door body 11 and at the upper side and the lower side of the opening 20.

  The plurality of glasses 12 shown in FIG. 1 to FIG. 3 are provided as a plurality of plate glasses, and are attached so as to cover the opening 20 from the inside of the door body 11 on both sides of the door body 11. And the glass 12 is comprised by the glass 12a attached with respect to the panel body 16a, and the glass 12b attached with respect to the panel body 16b. The glass 12 a is provided so as to close the opening 20 formed in the panel body 16 a and is disposed on the door-end side in the door main body 11. The glass 12a is attached to the panel body 16a by a glass attachment member 28a provided as a part of the inner wall of the door body 11 with the opening 20 sealed through a seal member 29a arranged along the peripheral edge thereof. It has been. The glass mounting member 28a is provided as a member independent of other members with respect to the portion extending in the vertical direction around the opening 20, and part of the portion extending in the horizontal direction around the opening 20 is the horizontal frame 19. And are provided as members that are partially common.

  On the other hand, the glass 12b is provided so as to close the opening 20 formed in the frame portion 16c provided as a part of the panel body 16b, and is disposed on the door end side in the door main body 11. The frame portion 16c divides the periphery of the opening 20 in the panel body 16b and swings with respect to a main body portion of the panel body 16b (a portion other than the frame portion 16c in the panel body 16b) via a hinge portion 30 described later. It is provided as possible. And the glass 12b is a glass attachment provided as a part of the inner wall of the door main body 11 in a state where the opening 20 formed in the frame portion 16c is sealed via a sealing member 29b arranged along the peripheral edge thereof. The member 28b is attached to the frame portion 16c of the panel body 16b. In addition, the glass 12 (12a, 12b) is formed so that the length dimension in the vertical direction of the glass 12 (12a, 12b) is more than half the length dimension in the vertical direction of the door body 11. .

5 is a cross-sectional view taken along the line CC of FIG. As shown in FIGS. 1, 2, 4, and 5, a pair of hinge portions 30 are provided inside the door body 11 and attached to the inside of the panel body 16 b. Each hinge portion 30 is disposed on the upper end side and the lower end side of the opening 20, and is disposed on the door end side with respect to the opening 20. Each hinge portion 30 is formed with a shaft member 30a formed in a columnar shape and a hole into which the shaft member 30a is inserted in a loosely fitted state, and is rotatable around the shaft member 30a. And a cylindrical member 30b. One end of the shaft member 30 a is fixed to the horizontal frame 19. On the other hand, the rotating cylinder member 30b is integrally fixed to the glass attachment member 28b and the door end side of the frame portion 16c at the side portion thereof.

  By providing the hinge portion 30 as described above, the glass 12b, the glass attachment member 28b, and the frame portion 16c are configured to be swingable around the shaft member 30a located at the end of the door end side. Yes. Thereby, a part in the panel body 16b side which is the single side | surface side of the door structure comprised by attaching the glass 12 to the door main body 11 can open the inside of this door structure body with respect to the exterior. It is provided as an opening / closing part 38 formed to be freely opened and closed. In the present embodiment, the opening / closing part 38 includes the glass 12b, the glass attachment member 28b, and the frame part 16c as described above. 1 to 5 show a closed state in which the opening / closing portion is closed. In this closed state, the end of the opening / closing part opposite to the hinge part 30 side is fixed to a predetermined frame member inside the door main body 11 by, for example, screws 31. In the present embodiment, the fire door 1 in which only a part of one side of the door structure is configured as an opening / closing portion has been described as an example, but this need not be the case. That is, in the fire door 1, a part of the both sides of the door structure may be configured as an opening / closing part.

  The shielding plate 13 shown in FIGS. 1 and 2 is made of steel (metal in the present embodiment) and is formed as a substantially rectangular plate-like member, and is housed inside the door body 11. The shielding plate 13 is connected to shielding plate driving means 15 described later, and is provided so as to move along the horizontal direction in the door main body 11 when an actuation means 14 described later operates. As shown in FIG. 1 and FIG. 2, the shielding plate 13 is located at a position disengaged from the opening 20 to the side opposite to the door-end side in a state where the fire is not generated and the operation means 14 is not operated. Located at the retracted position.

  On the other hand, when a fire occurs and the operation means 14 operates, as shown in the front view of the fire door 1 in FIG. 6, the shielding plate 13 moves from the retracted position along the horizontal direction to shield the opening 20. Move to the shield position. As shown well in FIG. 7 which is a sectional view taken along the line D-D in FIG. 6 and FIG. 8 which is a sectional view taken along the line E-E in FIG. 7, the shielding plate 13 is open at the shielding position. The glass 20 (12a, 12b) is arranged so as to face each glass (12a, 12b) so as to shield 20. In this shielding position, the end of the shielding plate 13 on the door end side is attached to a glass mounting member 28a that is a part of the door main body 11 and contacts the rubber plate member 32 disposed on the door end side of the opening 20. They are in contact with each other, and the gap between the door end side of the shielding plate 13 and the inner wall of the door main body 11 is sealed.

  Further, as well shown in FIGS. 7 and 8, the shielding plate 13 is provided with inner wall proximity portions 33 (33 a, 33 b, 33 c) provided along the outer peripheral edge portion. The inner wall proximity portion 33a is disposed at the edge portion on the opposite side to the door end side in the horizontal direction of the shielding plate 13 (the end portion side in the direction from the shielding position toward the retracted position), and along the vertical direction of the shielding plate 13. It is provided to extend. The inner wall proximity portion 33 b is disposed at the upper edge portion of the shielding plate 13 and is provided so as to extend along the horizontal direction of the shielding plate 13. The inner wall proximity portion 33 c is disposed at the lower edge portion of the shielding plate 13 and is provided so as to extend along the horizontal direction of the shielding plate 13. These inner wall proximity portions 33 (33a, 33b, 33c) are provided as bent plate-shaped portions. In addition, the rubber member 39 which contact | abuts when the shielding board 13 exists in the shielding position is attached to the part facing the inner wall proximity | contact part 33a in the column member 18 as a vibration-proof rubber (refer FIG. 2). Thereby, the vibration of the shielding board 13 at the time of opening and closing of the fire door 1 is suppressed, and generation | occurrence | production of a vibration sound is prevented.

As shown in FIGS. 7 and 8, the inner wall proximity portion 33 (33 a, 33 b, 33 c) is arranged along the periphery of the opening 20 inside the door main body 11 with the shielding plate 13 moved to the shielding position. Yes. And this inner wall proximity | contact part 33 (33a, 33b, 33c) has a part extended toward the inner wall of the door main body 11, and the door main body via a clearance gap in the state which the shielding board 13 moved to the shielding position. It is comprised so that it may adjoin to the 11 inner wall. In the inner wall proximity portion 33b, an inner wall of the door body 11 that is close to the panel body 16a side and that that is close to the panel body 16b side are provided.

  On the other hand, while the inner wall proximity portion 33 is provided on the shielding plate 13, the inner wall of the door body 11 is shielded along the periphery of the opening 20 as shown in FIGS. 7 and 8. A plate proximity portion 34 is provided. As the shielding plate proximity portion 34, on the inner wall of the door body 11, the shielding plate proximity portion 34 a and the shielding plate proximity portion 34 b arranged so as to extend in the vertical direction, and along the horizontal direction above the opening 20. The shielding plate proximity portion 34c and the shielding plate proximity portion 34d arranged so as to extend, and the shielding plate proximity portion 34e and the shielding plate proximity portion 34f arranged so as to extend along the horizontal direction below the opening 20 are provided. Is provided.

  The shielding plate proximity part 34 (34a, 34b, 34c, 34d, 34e, 34f) approaches the shielding plate 13 with the shielding plate 13 moved to the shielding position as shown in FIGS. It is comprised so that it may approach to the shielding board 13 through a clearance gap. The shielding plate proximity portion 34a and the shielding plate proximity portion 34b are arranged so as to face the portion of the shielding plate 13 at the shielding position opposite to the door end side, and the shielding plate proximity portion 34a is the panel body 16a. The shielding plate proximity part 34b is provided on the panel body 16b side. Further, the shielding plate proximity part 34a is provided as a part of a member constituting the glass attachment member 28a, and the shielding plate proximity part 34b is provided as a part of a member constituting the glass attachment member 28b. The shielding plate proximity portion 34c and the shielding plate proximity portion 34e are provided on the panel body 16a side, and are provided as a part of the members constituting the glass attachment member 28a and the lateral frame 19. The shielding plate proximity portion 34d and the shielding plate proximity portion 34f are provided on the panel body 16b side, and are provided as a part of members constituting the glass attachment member 28b.

  9 shows a state in which a fire has occurred and the shielding plate 13 has moved to the shielding position to shield the opening 20, and the glass 12 (12a, 12b) has been broken by the fire as viewed from the direction of arrows DD in FIG. It is sectional drawing corresponding to a position. 10 is a cross-sectional view taken along line FF in FIG. 9 and 10, the glass 12 (12a, 12b) attached to the opening 20 is broken, and the openings 20 provided in the panel body 16a and the panel body 16b are largely opened. Yes. However, when the shielding plate 13 is moved to the shielding position, a space path that communicates both sides of the opening 20 inside the door main body 11 causes the inner wall proximity portions (33a, 33b, 33c) of the shielding plate 13 and the door main body 11 to communicate with each other. A detour path (L, M, N) that passes between the inner wall and the shielding plate proximity portion (34a, 34b, 34c, 34d, 34e, 34f) and detours in the linear direction connecting both sides of the opening 20 Will be formed.

  A detour path L indicated by an arrow L in FIG. 9 and a detour path M and a detour path N respectively indicated by an arrow M and an arrow N in FIG. 10 indicate paths from the inside to the outside of the fire door 1. The detour path L shown in FIG. 9 is configured as a detour path that passes between the inner wall proximity portion 33a and the shielding plate proximity portion 34b and then further passes between the shielding plate proximity portion 34a and the shielding plate 13. become. Further, the detour path M shown in FIG. 10 passes between the inner wall proximity portion 33b and the shielding plate proximity portion 34d that are close to the panel body 16b side, and is further shielded from the inner wall proximity portion 33b that is closer to the panel body 36a side. This is configured as a detour route passing between the board proximity portion 34c. The portion of the inner wall proximity portion 33b adjacent to the panel body 16b side that is closest to the inner wall of the door body 11 is closer to the inner wall of the door body 11 than the portion of the shielding plate proximity portion 34d that is closest to the shielding plate 13. Located on the side. Further, the detour route N shown in FIG. 10 is configured as a detour route that passes between the inner wall proximity portion 33 c and the shielding plate proximity portion 34 f and then further passes between the shielding plate proximity portion 34 e and the shielding plate 13. Will be.

  11 is a cross-sectional view taken along line GG in FIG. As shown in FIGS. 1, 6 and 11, a plurality (two in this embodiment) of upper end side rollers 21 are attached to the upper end portion of the shielding plate 13. Each upper end roller 21 is provided as a wheel that is rotatably attached to the shielding plate 13. Also, a plurality (two in this embodiment) of lower end side rollers 22 are attached to the lower end portion of the shielding plate 13. Each lower end side roller 22 is also provided as a wheel that is rotatably attached to the shielding plate 13.

  8 and 11, in the door main body 11, the upper guide rail 23 attached to the horizontal frame 19 which is a strength member in the horizontal direction and arranged to extend in the horizontal direction, A lower guide rail 24 is provided. The upper guide rail 23 is fixed to the horizontal frame 19 arranged on the upper side, and the lower guide rail 24 is fixed to the horizontal frame 19 arranged on the lower side and arranged below the upper guide rail 23. The upper end side roller 21 is in contact with the upper guide rail 23 from below in a groove extending in the circumferential direction of the wheel, and is engaged with the upper side roller 21 so as to be able to roll in the horizontal direction. Further, the lower end side roller 22 is in contact with the lower guide rail 24 from above in a groove extending in the circumferential direction of the wheel, and is engaged with the lower side roller 22 so as to be able to roll in the horizontal direction. Thereby, the shielding plate 13 can move along the horizontal direction while being supported from above and below both the upper guide rail 23 and the lower guide rail 24 with the rotation of the upper end side roller 21 and the lower end side roller 22. Is provided.

  FIG. 12 is an enlarged cross-sectional view showing the operating means 14 in FIG. 2 and the vicinity thereof. 1, 2, and 12, one actuating means 14 is disposed at a midway position in the vertical direction of the opening 20 inside the door body 11, and one end is attached to the shielding plate 13. A plate-side attachment piece 14a and a door body-side attachment piece 14b to which one end is attached to the door body 11 are provided. The actuating means 14 is configured by joining the other end portions of the shielding plate side mounting piece 14a and the door main body side mounting piece 14b by brazing with an alloy that melts at a melting point of a predetermined temperature. Has been. As a result, the actuating means 14 connects the shielding plate 13 side and the door body 11 side, and is fused at the brazed portion by exceeding a predetermined temperature, thereby connecting the shielding plate 13 side and the door body 11 side. It is provided as a thermal fuse member that releases That is, the actuating means 14 operates in response to the occurrence of a fire, and operates (melts) when a fire occurs and reaches a predetermined temperature, thereby connecting the shielding plate 13 side and the door body 11 side. It is configured to release. In addition, the door main body side attaching piece 14b of the actuating means 14 is attached to the door main body 11 so as to be connected on the panel body 16b side disposed on the indoor side. For this reason, it arrange | positions so that the fire which generate | occur | produced indoors can be detected rapidly.

  As shown in FIG. 1, the shielding plate driving means 15 includes one weight portion 25, one connecting wire 26, and one pulley 27. The weight part 25 in the shielding plate driving means 15 is formed, for example, as a rectangular parallelepiped steel ingot, and is disposed inside a pillar member 17 that is a weight part built-in pillar member as shown in FIGS. 1 and 4. . When a fire occurs, the weight portion 25 is configured to drop from the inside of the pillar member 17 by gravity and move from the state shown in FIG. 1 to the state shown in FIG. 6 as described later. As shown in FIG. 4, both sides of the weight portion 25 in the horizontal direction and portions in the vicinity thereof are slidably contacted at a plurality of positions at positions sandwiched with the inner wall surface of the column member 17 (17a, 17b). Arranged to be possible. Furthermore, resin members 35 that are in sliding contact with the inner wall surface of the column member 17 (17a, 17b) are provided on both side surfaces in the horizontal direction of the weight portion 25 and in the vicinity thereof.

Further, the connecting wire 26 shown in FIGS. 1 and 6 is provided as a steel wire rope, and constitutes a connecting portion of this embodiment that connects the weight portion 25 to the shielding plate 13. The connecting wire 26 has one end attached to the weight portion 25 and the other end attached to the shielding plate 13 via a wire attaching member 36 indicated by a two-dot chain line in FIG. . Thereby, the weight part 25 is connected to the shielding plate 13 via the connecting wire 26. Further, as shown in FIGS. 1, 6 and 7, the pulley 27 is disposed inside the door main body 11 on the door tip side of the opening 20 and attached to the door main body 11 (note that In FIG. 7, the pulley 27 is indicated by a broken line). A connecting wire 26 is wound around the groove portion of the wheel of the pulley 27.

  In the shielding plate driving means 15, when the brazed portion of the operating means 14 is melted due to a temperature rise due to a fire, the connection between the door body 11 and the shielding plate 13 is released, and the connection wire 26 and the shielding plate 13 of the weight portion 25 are released. The restraint state to the door main body 11 via is also released. Thereby, the weight part 25 falls by gravity, the connection wire 26 is pulled by the weight part 25, the wheel of the pulley 27 rotates, and the shielding plate 13 is pulled in the horizontal direction as the weight part 25 and the connection wire 26 move. It will be. Thus, when the actuating means 14 is actuated (melted), the shielding plate driving means 15 moves the shielding plate 13 from the retracted position (see FIGS. 1 to 3) as the weight portion 25 is dropped (see FIGS. 1 to 3). To FIG. 8).

  As shown in FIGS. 1 and 6, the fire door 1 is provided with a wire rope 37 for manually returning the shielding plate 13 moved to the shielding position to the retracted position. The end of one end side of the wire rope 37 is attached to the end of the shielding plate 13 on the opposite side to the door end side at a substantially intermediate position in the vertical direction of the shielding plate 13 inside the door main body 11. . And the edge part of the other end side of the wire rope 37 is arrange | positioned in the state exposed to the exterior in the edge part on the opposite side to the door-end side of the door main body 11. FIG. When the shielding plate 13 is in the shielding position, the end on the other end side is loosely wound, for example, so as to be easily detached from a small hook or the like provided on the door body 11. When returning the shielding plate 13 to the retracted position after the shielding plate 13 has moved to the shielding position for the occurrence of a fire or check of operation, the operator pulls the other end of the wire rope 37, The position of the shielding plate 13 can be returned from the state of the shielding position shown in FIG. 6 to the state of the retracted position shown in FIG.

  Next, the operation of the fire door 1 described above will be described. The fire door 1 is normally opened and closed by a door driving device (not shown) as an automatic door during a normal fire-free period. On the other hand, for example, when a fire occurs on the indoor side of the fire door 1, the fire door 1 is closed and the control by the door driving device is stopped. When the temperature of the fire door 1 rises due to a temperature rise due to a fire, the brazed portion in the operating means 14 is melted, the connection between the shielding plate 13 and the door body 11 is released, and the shielding plate driving means 15 is activated. The weight part 25 falls due to gravity. Thereby, the shielding plate 13 is pulled in the horizontal direction by the connecting wire 26 via the pulley 27. With the operation of the shielding plate driving means 15, the shielding plate 13 moves in the horizontal direction between the upper guide rail 23 and the lower guide rail 24 while the upper end roller 21 and the lower end roller 22 roll. . And the shielding board 13 will move to the shielding position arrange | positioned between the some glass 12 so that the opening 20 may be shielded (refer FIG. 6 thru | or FIG. 8).

  After the shielding plate 13 moves to the shielding position, if the fire generated in the room is not extinguished and the fire power becomes strong, the temperature in the room rises further, and the glass 12 is broken as shown in FIGS. Will do. However, even when the glass 12 is broken in this way, the opening 20 is shielded by the shielding plate 13. In this state, the spatial paths that communicate with both sides of the opening 20 are only the detour path L, the detour path M, and the detour path N described above, and the passage of the flame is blocked.

Here, the operation of the opening / closing part 38 in the fire door 1 will be described. FIG. 13 is a cross-sectional view of the fire door 1 corresponding to FIG. 7, and is a cross-sectional view showing a state in which the opening / closing part 38 is opened. When opening the opening / closing portion 38, the operator loosens the screw 31 that fixes the end of the opening / closing portion 38 to a portion other than the opening / closing portion 38 in the door body 11 on the side opposite to the hinge portion 30 in the opening / closing portion 38. Remove. Thereby, the opening / closing part 38 can swing in the rotation direction around the hinge part 30 and can be opened as shown in FIG. Thereby, the inside of the door main body 11 will be in the state open | released with respect to the exterior in the panel body 16b side. Moreover, the hinge part 30 is arrange | positioned further to the door-end side rather than the edge part by the side of the door-end of the shielding board 13 in a shielding position. For this reason, in the fire door 1, it is comprised so that operation | work, such as a maintenance in the area | region in the door main body 11 centering on the shielding board 13 in a shielding position, can be performed more easily.

  Further, as well shown in FIG. 13, in the fire door 1, the portion disposed in the vicinity of the hinge portion 30 in the frame portion 16 c comes into contact with the edge portion of the panel body 16 b adjacent thereto, thereby The opening angle that is the movable range is set to be approximately 90 °. For this reason, while being able to suppress that other facilities, such as the wall surface which exists in the door-end side of the fire door 1, and the opening / closing part 38 interfere, it is ensured that the opening angle of the opening / closing part 38 is large enough, and workability | operativity. It is comprised so that improvement of can also be aimed at. In addition, according to the distance between the position of the hinge portion 30 and the end of the fire door 1 on the door end side, the opening angle of the opening / closing portion 38 is appropriately set to be larger than 90 ° while suppressing interference with other equipment. be able to.

  According to the fire door 1 described above, since the glass 12 is attached so as to cover the openings 20 on both sides formed in the door body 11, visibility and lighting can be ensured. Further, a metal shielding plate 13 is accommodated in the door body 11 so as to be movable in the horizontal direction. When the actuating means 14 that is actuated in response to the occurrence of a fire is actuated, the shielding plate driving means 15 is activated and the shielding plate 13 is moved from the retracted position away from the opening 20 to the shielding position that shields the opening 20. To do. For this reason, when a fire breaks out, the opening 20 is shielded by the metal shielding plate 13, and even if the glass 12 is broken due to the progress of the fire, an excellent fire prevention function that can sufficiently shield the flame can be exhibited. And since the opening 20 can be shielded based on the operation of the operating means 14, it is possible to realize a fire prevention function without using fireproof glass, and it is only necessary to have a structure certification defined by the Enforcement Ordinance of the Building Standard Law, and a fireproof test is unnecessary. The predetermined certification cost can be suppressed.

  Moreover, according to this embodiment, since the glass 12 attached to the opening 20 does not need to be a heat-resistant plate glass, the fire door 1 in which visibility and lighting are ensured can be realized without using the heat-resistant plate glass. And since it is not necessary to use heat-resistant plate glass, there are no restrictions on the selection of contractors during construction, smooth construction can be realized, and increase in construction costs can be suppressed. Moreover, since the common glass 12 which is not heat-resistant plate glass can be used, compared with the case where heat-resistant plate glass is used, a significant cost reduction can also be aimed at.

  Furthermore, according to the present embodiment, the opening 20 of the door main body 11 and the glass 12 covering the opening 20 are such that the length dimension in the vertical direction is more than half the length dimension in the vertical direction of the door main body 11. Formed to be. For this reason, the area of the opening 20 to which the glass 12 is attached can be set to be sufficiently wide so that the line of sight can be improved, and the same good visibility as in the case of a fire door using heat-resistant glass is ensured. be able to. Moreover, since the opening 20 and the glass 12 are formed so as to be more than half the length of the door main body 11, visibility at least below the center of the door main body 11 can be reliably ensured. The leg side visibility can be improved.

  Therefore, according to the present embodiment, with respect to the fire door 1 to which the glass 12 is attached, the construction can be facilitated without using a heat-resistant plate glass, an excellent fire prevention function can be exhibited, and a predetermined certification cost can be suppressed. High visibility can be secured.

Further, according to the fire door 1, when the actuating means 14 is actuated, the shielding plate driving means 15 is activated and the weight portion 25 is dropped, so that the shielding plate 13 connected to the weight portion 25 is detached from the opening 20. It moves from the retracted position to the shielding position that shields the opening 20. Since the opening 20 can be shielded by dropping the weight portion 25 based on the operation of the operation means 14, a fire prevention function can be realized with a simple structure, and the complication of the structure can be suppressed. Moreover, since the freedom degree of arrangement | positioning of a weight part becomes high compared with what uses a spring and an inclination rail, space can be used effectively.

  Further, according to the fire door 1, the door structure including the door main body 11 and the glass 12 is provided with an openable / closable portion 38 that can be opened and closed so that the interior thereof can be opened. For this reason, when performing the installation work of the shielding plate 13, the operating means 14, and the shielding plate drive means 15 arranged in the interior of the door main body 11 or the maintenance work thereof, the opening / closing portion is not disassembled. These operations can be easily performed by opening and closing 38.

  Further, according to the fire door 1, the glass 12 b of the glass 12 covering the opening 20 of the door body 11 is opened and closed in the door structure as the opening and closing portion 38, and the opening and closing portion 38 is configured only by a portion other than the glass 12. There is no. For this reason, the influence on the intensity | strength of the door main body 11 accompanying the opening / closing part 38 being provided can be minimized.

  Moreover, according to the fire door 1, the upper end side roller 21 and the lower end side roller 22 which can rotate freely are attached to the upper-lower-end part of the shielding board 13, respectively. And these rollers (21, 22) are arranged between both rails (23, 23) between the upper guide rail 23 and the lower guide rail 24 provided so as to extend horizontally in the vertical direction of the door main body 11, respectively. 24) is supported so as to be able to roll freely and generate a reaction force. As a result, the shielding plate 13 smoothly moves in the horizontal direction in a stable posture without causing the vertical extending posture to collapse and tilt between the upper and lower guide rails (23, 24). Thus, the opening 20 can be shielded by smoothly moving to the shielding position. In the fire door 1, a plurality of upper end side rollers 21 and lower end side rollers 22 are provided, so that a more stable posture can be maintained.

  In addition, according to the fire door 1, the pillar member 17 that extends in the vertical direction and supports the panel body 16 is provided as a strength member in the door main body 11, and the weight portion 25 can fall and move inside the pillar member 17. A weight part built-in column member 17 in which a space is formed is provided. For this reason, the space which arrange | positions an intensity | strength member in the door main body 11, and the space where the weight part 25 falls can be combined, and the space in the door main body 11 can be utilized efficiently. Further, according to the fire door 1, since the falling movement direction of the weight part 25 is guided by the inner wall surface of the weight part built-in column member 17, the occurrence of shaking during the falling movement of the weight part 25 is suppressed, and the shielding plate is driven. The operation of the means 15 can be performed more promptly and smoothly.

  Further, according to the fire door 1, the operating means 14 is provided as a temperature fuse member that is melted when a predetermined temperature is exceeded and releases the connection between the shielding plate 13 side and the door body 11 side, such as a smoke detector or a solenoid. The shielding plate driving means 15 is configured to operate without using an electric drive control means. Therefore, since it is a mechanical type, the operational reliability can be further improved.

Further, according to the fire door 1, the shielding plate 13 is provided with the inner wall proximity portion 33 (33 a, 33 b, 33 c), and around the opening 20 in the inner wall of the door body 11, the shielding plate proximity portion 34 (34 a, 34 b, 34c, 34d, 34e, 34f). Further, the inner wall proximity portion 33b and the shielding plate proximity portion so that the inner wall side of the door body 11 of the inner wall proximity portion 33b is located closer to the inner wall of the door body 11 than the shielding plate 13 side of the shielding plate proximity portion 34d. 34d is complicated. In the shielding position, as a spatial path that communicates both sides of the opening 20, a detour that bypasses the linear direction connecting the both sides of the opening 20 via the space between the inner wall proximity part 33 and the shielding plate proximity part 34. A path (L, M, N) is formed. For this reason, even if the glass 12 breaks in the state where the opening 20 is shielded due to a fire, the flame must pass through the opening 20
In addition to passing through a narrow space between the inner wall proximity portion 33 and the shielding plate proximity portion 34 or an intricate route, the detour routes (L, M, N) must also pass. As a result, the passage of the flame is efficiently blocked by the narrow space between the inner wall proximity portion 33 and the shielding plate proximity portion 34, the complicated route, and the detour route (L, M, N). Therefore, it is possible to realize a more excellent fire prevention function that can shield the flame efficiently.

  Moreover, according to the fire door 1, since the inner wall proximity portion 33 and the shielding plate proximity portion 34 are provided as bent portions, the position and number of the bent portions can be adjusted to adjust the inner wall proximity portion 33 and the shielding plate proximity portion 34. It is possible to easily realize a narrow path between the inner wall proximity portion 33 and between the shielding plate 13 and the shielding plate proximity portion 34 and a long detour path with a simple structure. . Thereby, a flame can be shielded more efficiently.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made as long as they are described in the claims. For example, the following modifications may be made.

(1) In this embodiment, the case where it is applied to a sliding door type automatic door has been described as an example. However, this may not be the case, and it may be applied as a hinged door type or folding door type fire door. It may be applied to a manual door.

(2) The position and size of the opening in the door body are not limited to those exemplified in the above embodiment, and can be implemented with various changes. In the present embodiment, the opening and the glass covering the opening have been described as an example in which one opening and one glass are provided on one side of the door body, but this need not be the case. That is, about the single side | surface side of a door main body, what was provided with the some opening and the thing to which the some glass was attached may be used. In this case, for the opening on one side and the glass covering the opening, the length in the vertical direction is the sum of the lengths that do not overlap in the horizontal direction. What is necessary is just to be comprised so that it may become a length dimension more than half of a length dimension. Similarly, in the left-right direction, the total length dimension of the length dimension in the left-right direction, which does not overlap in the left-right direction, is less than half the length dimension in the left-right direction of the door body. What is necessary is just to be comprised so that it may become a length dimension.

(3) About the pillar member in a door main body, not only the structure illustrated by said embodiment but it can implement by changing various arrangements and shapes. As the operation means, means other than the thermal fuse, for example, a solenoid that operates in conjunction with the smoke detector may be used. Further, the shielding plate driving means can be implemented by variously changing the arrangement and number of the weight portions and the configuration of the connecting portions. Further, the arrangement and shape of the inner wall proximity portion and the shielding plate proximity portion can be variously changed and implemented.

(4) In the present embodiment, as an example of a configuration in which the shielding plate is supported so as to be movable in the horizontal direction with respect to the door body, an example including an upper end roller, a lower end roller, an upper guide rail, and a lower guide rail. Although described, this need not be the case, and various modifications can be made. FIG. 14 is a schematic diagram showing a modified example related to the configuration in which the shielding plate is supported so as to be movable in the horizontal direction with respect to the door main body. In the fire door according to the modification shown in FIG. 14, the upper and lower rollers and the upper and lower guide rails are not provided, but the suspension roller 40, the suspension guide rail 41, and the guide portion 42. And are provided. In addition, in FIG. 14, while showing the schematic diagram corresponding to the front view of the fire door which concerns on a modification, the shielding board 13 and glass 12, the roller 40 for suspension, the guide rail 41 for suspension comprised similarly to this embodiment are shown. The elements other than the guide part 42 are not shown.

  The suspension roller 40 is provided as a wheel that is rotatably attached to the upper end portion of the shielding plate 13 via a holding member 40a. A plurality of suspension rollers 40 are attached. The suspension guide rail 41 is disposed so as to extend in the horizontal direction inside the door main body (not shown). The suspension guide rail 41 is configured such that the suspension roller 40 abuts from above so that the shielding plate 13 is suspended, and engages so as to be able to roll in the horizontal direction.

  FIG. 15 is a partially enlarged cross-sectional view showing the guide portion 42 and its vicinity viewed from the position of the arrow H in FIG. 14 in an enlarged manner. 14 and 15 is arranged to extend in the horizontal direction below the suspension guide rail 41 in the door body. The guide portion 42 is provided with a groove portion 42a having a rectangular cross section formed so as to open upward and extend in the horizontal direction. With respect to this groove part 42a, the lower end side of the lower end part 43 of the shielding board 13 is arrange | positioned in the loose fit state inside. Thereby, the guide part 42 of the shielding board 13 in the front-back direction (direction shown by the double-ended arrow I in FIG. 15) is a direction perpendicular to both the vertical direction and the horizontal direction that is the moving direction of the shielding board 13. The amount of displacement of the lower end portion 43 is restricted and the movement of the lower end portion 43 of the shielding plate 13 in the horizontal direction is guided. With this configuration, the shielding plate 13 is configured so that the suspension roller 40 rolls on the suspension guide rail 41 and is guided by the guide portion 42 at the lower end portion 43 while the shielding plate driving means (not shown) With the operation, it moves in the horizontal direction from the retracted position to the shielding position.

  According to the fire door according to this modified example, the door main body includes a suspension guide rail 41 that is rotatably engaged with a suspension roller 40 that is rotatably provided at the upper end portion of the shielding plate 13, and a suspension guide rail 41. The guide portions 42 for guiding only the horizontal movement of the lower end portion 43 of the shielding plate 13 are provided so as to extend in the horizontal direction along the vertical direction. For this reason, the shielding plate 13 is supported between the suspension guide rail 41 and the guide portion 42 while being suspended and guided in the horizontal movement direction. As a result, the shielding plate 13 can be smoothly moved in the horizontal direction in a stable posture without being tilted by the vertically extending posture, and is smoothly moved to the shielding position and formed on the door body. The opening can be shielded. In the fire door according to this modification, a plurality of suspension rollers 40 are provided, and a more stable posture can be maintained.

(5) FIG. 16 is a schematic diagram showing another modification example of the configuration in which the shielding plate is supported so as to be movable in the horizontal direction with respect to the door body. In the fire door according to the modification shown in FIG. 16, the upper and lower rollers and the upper and lower guide rails as in the present embodiment are not provided, but a pair of central rollers 44 and a central guide rail are provided. 45. In addition, in FIG. 16, while showing the schematic diagram corresponding to the front view of the fire door which concerns on a modification, the shielding board 13 and glass 12 comprised similarly to this embodiment, a pair of center roller 44, and the center guide rail 45 are shown. The other elements are not shown.

  The pair of central rollers 44 includes a central roller 44 a disposed on the upper side and a central roller 44 b disposed on the lower side. These central rollers (44 a and 44 b) are arranged on one side of the shielding plate 13. It is rotatably attached to the side and is arranged side by side in the vertical direction. The pair of central rollers 44 are arranged in a plurality (two in this modification) in the horizontal direction. In this modified example, the pair of central rollers 44 is illustrated as being disposed on one side of the shielding plate 13, but this need not be the case and may be disposed on both sides.

The center guide rail 45 is arranged so as to extend in the horizontal direction inside the door main body (not shown). This center guide rail 45 is arrange | positioned so that it may extend in the horizontal direction between the glass 12 arrange | positioned at the both surfaces side of a door main body, respectively. And the center guide rail 45 is comprised so that a pair of center roller 44 may contact | abut from both sides of an up-down direction, and it can roll freely in a horizontal direction. That is, the central roller 44a and the central roller 44b that are arranged to face each other are engaged so as to be able to roll from both sides in the vertical direction. In this modified example, the case where the glass 12 is configured as a single sheet is illustrated, but this need not be the case, and a plurality of sheets of glass 12 may be provided at positions facing the central guide rail 45. You may be comprised as what was isolate | separated into this glass.

  According to the fire door according to this modification, a pair of rotatable central rollers 44 are attached to the central portion of the shielding plate 13. These rollers 44 (44a, 44b) engage with a central guide rail 45 provided so as to extend in the horizontal direction in the door main body so as to be able to roll and sandwich between the both sides in the vertical direction. Is supported in a state in which As a result, the shielding plate 13 can be smoothly moved in the horizontal direction in a stable posture without being tilted by the vertically extending posture, and is smoothly moved to the shielding position and formed on the door body. The opening can be shielded. In the fire door according to this modification, a plurality of a pair of central rollers 44 are provided, and a more stable posture can be maintained.

  According to the fire door according to the above embodiment, a weight is used as the shielding plate driving means 15, but a spring having one end fixed to the shielding plate 13 and the other end fixed to the door body 11 may be used. In this case, one having a constant spring force may be used. Further, instead of the weight, an inclined rail may be used so that the weight of the shielding plate 13 itself is used. In this case, the upper guide rail 23, the lower guide rail 24, or the center guide rail 45 is arranged so that the door end side is positioned slightly below the door bottom side, for example, about several millimeters vertically.

  The present invention is a fire door for shielding a flame, and can be widely applied as a fire door to which glass is attached.

DESCRIPTION OF SYMBOLS 1 Fire door 11 Door main body 12, 12a, 12b Glass 13 Shielding plate 14 Actuating means 15 Shielding plate drive means 20 Opening 25 Weight part 26 Connection wire (connection part)

Claims (14)

A fire door to shield the flame,
A door body in which an opening is formed;
Glass attached to cover the opening on both sides of the door body;
It is formed as a metal plate-like member, and is housed inside the door body so as to move along the horizontal direction so as to shield the opening from the retreat position retracted to a position away from the opening. A shielding plate that moves to a shielding position arranged to face the glass;
An operating means that operates in response to the occurrence of a fire;
Shielding plate driving means for moving the shielding plate from the retracted position to the shielding position when the operating means is activated;
With
The opening and the glass covering the opening are formed so that the length dimension in the vertical direction is not less than half the length dimension in the vertical direction of the door body, Fire door. A fire door according to claim 1,
The shielding plate driving means has a weight part that drops due to gravity and a connecting part that connects the weight part to the shielding plate, and when the actuating means is actuated, the shielding plate is accompanied by the fall of the weight part. A fire door, wherein the fire door is moved from the retracted position to the shielding position. A fire door according to claim 2,
A part of at least one side of the door structure configured by attaching the glass to the door body is an opening / closing part formed to be openable and closable so that the interior of the door structure can be opened to the outside. A fire door characterized by being provided as The fire door according to claim 3,
The fire door, wherein the opening / closing part includes the glass. The fire door according to claim 4,
An upper end side roller rotatably attached to the upper end portion of the shielding plate;
A lower end roller rotatably attached to the lower end of the shielding plate;
An upper guide rail that is disposed so as to extend in the horizontal direction in the door body, and that the upper end side roller is in contact with the lower side and is movably engaged in the horizontal direction;
A lower guide rail disposed in the door main body so as to extend horizontally below the upper guide rail, and the lower end side roller being in contact with the upper side so as to be able to roll in the horizontal direction;
A fire door, further comprising: The fire door according to claim 4,
A suspension roller rotatably attached to the upper end of the shielding plate;
A suspension guide rail that is disposed so as to extend in the horizontal direction in the door body, and that the suspension roller is in contact with the suspension roller so as to be suspended from the upper side so as to be suspended.
The shielding in the front-rear direction, which is arranged in the door body so as to extend horizontally below the suspension guide rail and is perpendicular to both the vertical direction and the horizontal direction as the moving direction of the shielding plate. A guide portion that regulates the amount of displacement of the lower end of the plate and guides the horizontal movement of the lower end of the shielding plate;
A fire door, further comprising: The fire door according to claim 4,
A pair of central rollers that are rotatably attached to a central portion on at least one side of the shielding plate and arranged side by side in the vertical direction;
A central guide rail that is disposed so as to extend in the horizontal direction in the door body, and the pair of central rollers are in contact with both sides in the vertical direction so as to be able to roll freely in the horizontal direction;
A fire door, further comprising: A fire door according to any one of claims 4 to 7,
The door body is provided with pillar members that are arranged along the vertical direction in the interior and support the panel bodies on both sides.
A fire door comprising a pillar part with a built-in weight part in which a space in which the weight part can fall and move is formed as the pillar member. The fire door according to claim 8,
The fire door, wherein the weight part built-in column member is formed such that an inner wall surface guides a falling movement direction of the weight part. A fire door according to any one of claims 4 to 9,
The actuating means is provided as a temperature fuse member that connects the shielding plate side and the door body side, and is fused by exceeding a predetermined temperature to release the connection between the shielding plate side and the door body side. A fire door characterized by being made. A fire door according to any one of claims 4 to 10,
The shield plate is disposed along the periphery of the opening in the door body with the shield plate moved to the shield position, and extends in a direction approaching the inner wall of the door body. An inner wall proximity portion is provided near the inner wall of the door body through a gap,
When the shielding plate moves to the shielding position, a space path that communicates both sides of the opening inside the door body passes between the inner wall of the door body and the inner wall proximity portion, and the opening. A fire door characterized in that it is formed as a detour path that detours in a straight line direction connecting both sides of the door. A fire door according to claim 11,
The fire door is characterized in that the inner wall proximity portion is provided as a bent plate-shaped portion. A fire door according to any one of claims 4 to 12,
An inner wall of the door body is provided along the periphery of the opening, and has a portion extending in a direction approaching the shielding plate in a state where the shielding plate is moved to the shielding position, and through a gap. A shielding plate proximity portion adjacent to the shielding plate is provided;
When the shielding plate moves to the shielding position, a spatial path communicating between both sides of the opening inside the door main body passes between the shielding plate and the shielding plate proximity portion, and the opening of the opening. A fire door characterized in that it is formed as a detour path that detours in a straight direction connecting both sides. A fire door according to any one of claims 4 to 10,
The shield plate is disposed along the periphery of the opening in the door body with the shield plate moved to the shield position, and extends in a direction approaching the inner wall of the door body. An inner wall proximity portion is provided near the inner wall of the door body through a gap,
An inner wall of the door body is provided along the periphery of the opening, and has a portion extending in a direction approaching the shielding plate in a state where the shielding plate is moved to the shielding position, and through a gap. A shielding plate proximity portion adjacent to the shielding plate is provided;
The portion closest to the inner wall of the door body in the inner wall proximity portion is located closer to the inner wall of the door body than the portion closest to the shielding plate in the shielding plate proximity portion,
When the shielding plate moves to the shielding position, a spatial path that communicates both sides of the opening inside the door body passes between the shielding plate proximity portion and the inner wall proximity portion, and the opening. A fire door characterized in that it is formed as a detour path that detours in a straight line direction connecting both sides of the door.

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