JP7115234B2 - fire door - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire door that opens and closes an opening through which a vehicle passes, provided on the route of the vehicle that is guided by two rails installed on the floor.

An example of a fire door that opens and closes an opening that is provided in a travel route of a vehicle and through which the vehicle passes is disclosed in Japanese Patent Application Laid-Open No. 10-147416 (Patent Document 1). Reference numerals shown in parentheses in the following description of the background art are those of Patent Document 1. The fire shutter (4) described in Patent Document 1 is configured to prevent spread of fire and smoke by lowering when a fire occurs. In addition, in the configuration described in Patent Document 1, the carriage (2) is connected to each other via the connector (23), and with the connector (23) positioned below the fire shutter (4) It is arranged to lower the fire shutter (4). Then, as described in paragraph 0013, FIGS. 8 and 9 of Patent Document 1, the lower end of the fire shutter (4) is shaped to sandwich the connector (23) so that the conveying path (1) ) can be reliably blocked.

JP-A-10-147416

By the way, although not described in Patent Document 1, there are cases where an opening to be opened and closed by a fire door is provided in the travel route of a vehicle that travels while being guided by two rails installed on the floor. In such a case, in the case of a fire door that closes the opening by descending like the fire shutter of Patent Document 1, depending on the side surface shape of each rail, there may be a gap between the lowered fire door and the side surfaces of the two rails. There is a possibility that a relatively large gap will be formed between the pipes, and the performance of suppressing the spread of fire and gases such as smoke will be lowered.

Therefore, when the opening to be opened and closed by the fire door is provided on the travel route of the vehicle that travels while being guided by two rails installed on the floor, the fire door in the closed state and the two rails may Realization of a technique that can keep the gap small is desired.

In view of the above, the first fire door is provided on the travel route of a vehicle that travels while being guided by a first rail and a second rail that are installed parallel to each other on the floor, and opens and closes an opening through which the vehicle passes. A first door member provided above the first rail and the second rail, and a door member provided between the first rail and the second rail in the width direction of the travel route and a second door member, wherein the lower surface of the first door member abuts against the upper surfaces of the first rail and the second rail, and the first rail and the second rail in the opening. The second door member is constructed so as to be able to descend to a position where the portion above the second rail is closed, and the second door member is in a posture standing from the floor, and the second door member is positioned so that the vehicle travels. The position can be switched between a standing posture entering the locus and a tilting posture in which the second door member is tilted more than the standing posture and retreats from the running locus, and the width direction is changed. The side on which the first rail is arranged with respect to the second rail in the second door member is defined as a first side, and the side opposite to the first side in the width direction is defined as a second side. and a fourth door member provided at an end of the second door member on the second side, wherein the third door member is provided at the end of the second door member. The third door member is movable in the width direction between a first protruding position where the third door member protrudes toward the first side with respect to the door member and a first retracted position on the second side of the first protruding position. and the fourth door member is supported by the second door member and has a second projecting position where the fourth door member projects toward the second side with respect to the second door member, and a second projecting position. is supported by the second door member so as to be movable in the width direction between the second retracted position on the first side and the first protruding position when the posture of the second door member is the standing posture. is a position where the third door member abuts against the first rail from the second side, and the second projecting position is a position where the posture of the second door member is the standing posture , the fourth door member abuts against the second rail from the first side .
In view of the above, the second fire door is provided on the travel route of the vehicle that is guided by the first rail and the second rail that are installed parallel to each other on the floor, and opens and closes the opening through which the vehicle passes. A first door member provided above the first rail and the second rail, and a door member provided between the first rail and the second rail in the width direction of the travel route and a second door member, wherein the lower surface of the first door member abuts against the upper surfaces of the first rail and the second rail, and the first rail and the second rail in the opening. The second door member is constructed so as to be able to descend to a position where the portion above the second rail is closed, and the second door member is in a posture standing from the floor, and the second door member is positioned so that the vehicle travels. It is configured to be able to switch the posture between a standing posture in which it enters the locus and a tilted posture in which the second door member is tilted more than the standing posture and retreats from the traveling locus, a fifth door member provided on the first side with respect to the rail; and a sixth door member provided on the second side with respect to the second rail, wherein the fifth door member A third protruding position where the fifth door member protrudes toward the second side with respect to a first fixing member fixed to the floor, and a third retracted position on the first side of the third protruding position. The sixth door member is supported by the first fixing member so as to be movable in the width direction between them, and the sixth door member is positioned on the first side with respect to the second fixing member fixed to the floor. and a fourth retracted position on the second side of the fourth projecting position supported by the second fixing member so as to be movable in the width direction between the fourth projecting position and the third projecting position; The position is a position where the fifth door member abuts against the first rail from the first side. It is in the point that it is a position to abut from the side.
In view of the above, the third fire door is provided on the travel route of the vehicle that travels guided by the first rail and the second rail that are installed parallel to each other on the floor, and opens and closes the opening through which the vehicle passes. A first door member provided above the first rail and the second rail, and a door member provided between the first rail and the second rail in the width direction of the travel route and a second door member, wherein the lower surface of the first door member abuts against the upper surfaces of the first rail and the second rail, and the first rail and the second rail in the opening. The second door member is constructed so as to be able to descend to a position where the portion above the second rail is closed, and the second door member is in a posture standing from the floor, and the second door member is positioned so that the vehicle travels. The second door member is configured to be capable of switching between a standing posture in which it enters a locus and a tilted posture in which the second door member is tilted more than the standing posture and retreats from the travel locus. an urging device for urging the door member toward the standing posture; and a holding device for holding the second door member in the tilted posture against the urging force of the urging device in an electric power supply state. and, when the power supply to the holding device is stopped, the holding by the holding device is released, and the posture of the second door member is changed from the tilted posture to the above-mentioned by the biasing force of the biasing device. It is at the point where it switches to a standing posture.

In the first to third characteristic configurations, in addition to the first door member configured so that the fire door can be lowered to a position where the portion above the first rail and the second rail in the opening can be closed, and a second door member provided between the first rail and the second rail in the width direction of the travel path. Therefore, the portion of the opening between the first rail and the second rail in the width direction below the upper surfaces of the first rail and the second rail can be opened and closed by the second door member. can. Depending on the shape of the side surface of the first rail or the second rail, a The descending first door member may include a portion that is difficult to approach, but the second door member provided between the first rail and the second rail in the width direction is different from the first door member. It is possible to approach the lateral inner side surfaces of the first rail and the second rail from different directions. Therefore, it is easier to keep the gap between the closed fire door and the first and second rails smaller than when the fire door does not have such a second door member.
Further, according to the first to third characteristic configurations, opening and closing of the second door member can be performed by switching the posture of the second door member. Therefore, compared to the case where the second door member is opened and closed by sliding the entire second door member vertically or the like, the space for arranging the second door member retracted from the travel locus to open the opening is reduced. There is also the advantage that the structure of each part including the floor can be simplified for securing.
Further, according to the first characteristic configuration, the third door member can be brought into contact with the side surface of the first rail on the inner side in the width direction from the side. Therefore, by forming the shape of the end of the third door member on the outside in the width direction (the side opposite to the inside in the width direction) to match the shape of the side surface on the inside in the width direction of the first rail, the third door member and the The third door member can be brought into contact with the first rail so as not to create a large gap with the first rail.
Similarly, according to the first characteristic configuration, the fourth door member can be brought into contact with the lateral inner side surface of the second rail from the side. Therefore, by forming the shape of the widthwise outer end of the fourth door member to match the shape of the widthwise inner side surface of the second rail, a large gap can be formed between the fourth door member and the second rail. The fourth door member can be brought into contact with the second rail so as to prevent the occurrence of
Therefore, according to the first characteristic configuration, the gap between the third door member positioned at the first projecting position and the first rail, The gap between the fourth door member positioned at the second projecting position and the second rail can be kept small, and the gap between the closed fire door and the first and second rails can be easily kept small.
Further, according to the second characteristic configuration, the fifth door member can be brought into contact with the widthwise outer side surface of the first rail from the side. Therefore, by forming the shape of the widthwise inner end portion of the fifth door member to match the shape of the widthwise outer side surface of the first rail, a large gap can be formed between the fifth door member and the first rail. The fifth door member can be brought into contact with the first rail so as to prevent the occurrence of
Similarly, according to the second characteristic configuration, the sixth door member can be brought into contact with the widthwise outer side surface of the second rail from the side. Therefore, by forming the shape of the widthwise inner end portion of the sixth door member to match the shape of the widthwise outer side surface of the second rail, a large gap can be formed between the sixth door member and the second rail. The sixth door member can be brought into contact with the second rail so as to prevent the occurrence of
Therefore, according to the second characteristic configuration, the gap between the fifth door member located at the third projecting position and the first rail, The gap between the sixth door member positioned at the fourth projecting position and the second rail can be kept small, and the gaps between the closed fire door and the first and second rails can be easily kept small.
Further, according to the third characteristic configuration, the posture of the second door member can be switched from the tilted posture to the standing posture without using electric power. Therefore, even if a power failure, power line disconnection, or the like occurs due to a fire, the posture of the second door member can be switched from the tilted posture to the standing posture to close the opening.

Further features and advantages of the fire door will become clear from the following description of the embodiments described with reference to the drawings.

Side view of goods transport equipment in the vicinity of a fire door Plan view of goods transport equipment in the vicinity of the fire door Front view of open fire door Top view of open fire door Front view of closed fire door Top view of a closed fire door Perspective view of an open fire door Perspective view of a fire door in an intermediate state Perspective view of a closed fire door

An embodiment of a fire door will be described with reference to the drawings. Here, a case where the fire door according to the present disclosure is applied to an article transport facility that transports articles by a vehicle will be described as an example.

As shown in FIGS. 1 and 2 , the fire door 20 is provided on the travel route 3 of the vehicle 1 . The vehicle 1 travels while being guided by a first rail 41 and a second rail 42 installed parallel to each other on the floor 2 . The floor 2 includes both a floor surface and members supported or fixed to the floor surface. Each of the first rail 41 and the second rail 42 is installed along the longitudinal direction X (extending direction) of the travel route 3 . Hereinafter, one side in the longitudinal direction X will be referred to as the “first longitudinal side X1”, and the other side in the longitudinal direction X (opposite to the first longitudinal side X1 in the longitudinal direction X) will be referred to as the “second longitudinal side X2. ”. Further, hereinafter, one side of the travel path 3 in the width direction Y is referred to as the "first width direction Y1", and the other side of the width direction Y (opposite side to the first width direction Y1 in the width direction Y) is referred to as " width direction second side Y2”. Here, the side on which the first rail 41 is arranged with respect to the second rail 42 in the width direction Y is defined as the width direction first side Y1. The width direction Y is a direction orthogonal to the longitudinal direction X when viewed from above (planar view) along the up-down direction Z (vertical direction). When the floor 2 is formed along the horizontal plane, the longitudinal direction X and the width direction Y are directions along the horizontal plane. In this embodiment, the first widthwise side Y1 corresponds to the "first side", and the second widthwise side Y2 corresponds to the "second side".

The fire door 20 is provided to open and close the opening 6 through which the vehicle 1 passes. By closing the opening 6 with the fire door 20 when a fire occurs (that is, by blocking (dividing) the travel route 3), the spread of fire through the opening 6 can be suppressed, It is possible to suppress diffusion of gas such as smoke. As shown in FIGS. 1 and 2, here, a wall portion 5 is provided so as to partition the inside of the facility into two areas, and an opening portion 6 is formed so as to penetrate the wall portion 5 in the longitudinal direction X. ing. The first rail 41 and the second rail 42 are installed over two areas partitioned by the wall portion 5 while passing through the opening portion 6 . The first rail 41 and the second rail 42 are formed continuously in the longitudinal direction X at the installation location of the wall portion 5 .

The vehicle 1 includes a first running wheel 11a (here, a plurality of first running wheels 11a) that rolls on a first upper surface 41a that is the upper surface of the first rail 41, and a second upper surface that is the upper surface of the second rail 42. and a second running wheel 11b (here, a plurality of second running wheels 11b) that rolls 42a. The vehicle 1 travels along the travel route 3 by rotationally driving at least one of the first travel wheels 11 a and the second travel wheels 11 b by the travel motor 15 . The vehicle 1 includes a first guide wheel 12a (here, a plurality of first guide wheels 12a) that regulates movement of the vehicle 1 in the width direction Y with respect to the first rail 41, and a width direction Y with respect to the second rail 42 of the vehicle 1. The second guide wheel 12b (here, a plurality of second guide wheels 12b) for restricting the movement of the first guide wheel 12b is guided by the side surface of the first rail 41 and the second guide wheel The vehicle 1 travels along the travel route 3 while the rail 12b is guided in contact with the side surface of the second rail 42 .

The vehicle 1 includes a power receiving unit 14 that receives power from a power supply line 43 installed along the travel route 3 , and the power supplied from the power supply line 43 is supplied to the running motor 15 . Here, the power supply line 43 is supported by the first rail 41 along the side surface of the first rail 41 on the width direction first side Y1. The power supply line 43 has a split portion 43a at a position in the longitudinal direction X where the fire door 20 is installed, where the power supply line 43 is discontinuous in the longitudinal direction X. As shown in FIG.

In this embodiment, the vehicle 1 is used to transport articles W in the article transport facility 100 . That is, the vehicle 1 is an article transport vehicle that travels along the travel route 3 to transport the articles W. As shown in FIG. The vehicle 1 includes a transfer device 13 (here, a roller conveyor) that transfers the article W to a transfer target location (not shown). Transfer target locations include an incoming conveyor for entering the article W into the storage, an outgoing conveyor for leaving the article W from the storage, and an incoming conveyor for receiving the article W from outside the article transport facility 100. , a shipping conveyor for shipping the articles W to the outside of the article transport facility 100 . While the vehicle 1 is stopped at a position adjacent to the transfer target location, the transfer device 13 is used to transfer the article W to and from the transfer target location.

As shown in FIG. 1 , the fire door 20 has a first door member 21 provided above the first rail 41 and the second rail 42 . The first door member 21 moves in the up-down direction Z between an open position P2 (see FIG. 1) and a closed position P1 (see FIG. 5) below the open position P2. The portion above the first rail 41 and the second rail 42 (hereinafter referred to as "first portion 6a") is opened and closed. The first upper surface 41a and the second upper surface 42a are arranged at the same height.

As shown in FIG. 1, when the first door member 21 is positioned at the open position P2, the entire first door member 21 is arranged above the travel locus 4 of the vehicle 1 (see FIG. 3). That is, the first door member 21 is arranged at a position where it does not interfere with the vehicle 1 passing through the opening 6 . Here, the travel locus 4 is the space in which the vehicle 1 moves when passing through the opening 6, and in the present embodiment, the travel locus 4 also includes the space in which the article W conveyed by the vehicle 1 moves. The vehicle 1 has components such as the first guide wheel 12a, the second guide wheel 12b, and the power receiving unit 14, at least a part of which is arranged below the first upper surface 41a and the second upper surface 42a. Therefore, as shown in FIG. 3, a portion of the travel locus 4 is formed below the first upper surface 41a and the second upper surface 42a.

As shown in FIG. 5, when the first door member 21 is positioned at the closed position P1, the lower surface 21a of the first door member 21 is in contact with the upper surfaces of the first rail 41 and the second rail 42 ( That is, the first portion 6a of the opening 6 is closed by the first door member 21 by arranging the first door member 21 so as to contact both the first upper surface 41a and the second upper surface 42a. Here, the entire first portion 6a is closed by the first door member 21 positioned at the closed position P1. In addition, in FIG. 9 to be referred to later, illustration of the first door member 21 positioned at the closed position P1 is omitted.

Thus, the lower surface 21a of the first door member 21 is in contact with the upper surface of each of the first rail 41 and the second rail 42, and the first rail 41 and the second rail in the opening 6 are in contact with each other. It is configured such that the first portion 6a (here, the entire first portion 6a) above 42 can be lowered to a closing position (closed position P1). 1 exemplifies a case where a door member that slides along the vertical direction Z is used as the first door member 21, but for example, the first door member 21 may be a door that can be wound up. By winding or unrolling the first door member 21 using a body (for example, a door body having a plurality of slats connected to each other), the first door member 21 (lower surface 21a) is positioned between the open position P2 and the closed position P1. It can also be configured to move in the vertical direction Z between.

As shown in FIGS. 3 to 6, the fire door 20 includes the first door member 21 as described above, and a second rail provided between the first rail 41 and the second rail 42 in the width direction Y. A door member 22 is provided. Here, the 2nd door member 22 is comprised by the plate-shaped member. The second door member 22 can be switched between a standing posture P3 (see FIGS. 5, 6, 8 and 9) and a tilted posture P4 (see FIGS. 3, 4 and 7). It is configured. The standing posture P3 is a posture in which the second door member 22 (here, the upper portion of the second door member 22) enters the travel locus 4 of the vehicle 1 (see FIG. 3). be. The tilting posture P4 is a posture that is more tilted than the standing posture P3, and is a posture in which the second door member 22 is retracted from the travel locus 4 . Here, the upright posture P3 is a posture in which the second door member 22 is along a vertical plane perpendicular to the longitudinal direction X, and the tilted posture P4 is a posture in which the second door member 22 is along a horizontal plane. The second door member 22 switches between the upright posture P3 and the tilted posture P4 so that the second door member 22 is positioned at the lower side of the first upper surface 41a and the second upper surface 42a in the opening 6 and the second position in the width direction Y. The portion between the first rail 41 and the second rail 42 (hereinafter referred to as "second portion 6b") is opened and closed.

As shown in FIG. 3 , when the posture of the second door member 22 is switched to the tilted posture P4, the entire second door member 22 is arranged below the travel locus 4 . That is, the second door member 22 is arranged at a position where it does not interfere with the vehicle 1 passing through the opening 6 . Note that when the posture of the second door member 22 is switched to the tilting posture P4, the entire third door member 23 and the entire fourth door member 24, which will be described later, are also arranged below the travel locus 4. be. Further, as shown in FIG. 5, when the posture of the second door member 22 is switched to the standing posture P3, the upper end of the second door member 22 is the same as the first upper surface 41a and the second upper surface 42a. By arranging the second door member 22 at approximately the same height and arranging the lower end of the second door member 22 so as to abut against the floor 2 , the second portion 6 b of the opening 6 is positioned at the second door member 22 . is closed by

As shown in FIGS. 6 and 8, the second door member 22 is arranged to be separated from the first rail 41 and the second rail 42 in the state of being switched to the standing posture P3. That is, in a state where the posture of the second door member 22 is switched to the standing posture P3, the end of the second door member 22 on the width direction first side Y1 is positioned on the width direction second side Y2 of the first rail 41. The end of the second door member 22 on the width direction second side Y2 is located on the width direction second side Y2 relative to the side surface, and the end portion of the second door member 22 on the width direction second side Y2 is located on the width direction first side relative to the side surface of the second rail 42 on the width direction first side Y1. Placed in Y1. Therefore, a portion of the second portion 6b of the opening 6 excluding both ends in the width direction Y (that is, an intermediate portion in the width direction Y) is closed by the second door member 22 in a state of being switched to the upright position P3. As will be described below, the end portion of the second portion 6b on the width direction first side Y1 is closed by the third door member 23 positioned at the first projecting position E1, and the width direction second side Y2 of the second portion 6b is closed. is closed by the fourth door member 24 positioned at the second projecting position E2.

As shown in FIGS. 3, 5, and 6, in the present embodiment, the fire door 20 includes, in addition to the first door member 21 and the second door member 22, the width direction first side of the second door member 22. A third door member 23 provided at the end of Y1, and a fourth door member 24 provided at the end of the second door member 22 on the second side Y2 in the width direction. Here, each of the third door member 23 and the fourth door member 24 is configured by a plate-like member and arranged parallel to the second door member 22 . That is, each of the third door member 23 and the fourth door member 24 assumes the standing posture when the second door member 22 is in the standing posture P3, and similarly tilts when the second door member 22 is in the tilting posture P4. Posture. Regarding the third door member 23, the standing posture is a posture in which the third door member 23 stands up from the floor 2 and enters the travel locus 4, and the tilting posture is a posture in which the third door member 23 is tilted more than the standing posture. This is a posture in which the third door member 23 retreats from the travel locus 4 . As for the fourth door member 24, the upright posture is a posture in which the fourth door member 24 stands up from the floor 2 and enters the travel locus 4, and the tilted posture is tilted more than the upright posture. This is a posture in which the fourth door member 24 retreats from the travel locus 4 . The third door member 23 extends in the width direction Y between the first projecting position E1 (see FIGS. 5, 6 and 9) and the first retracted position R1 (see FIGS. 3, 7 and 8). It is movably supported by the second door member 22 . Here, the third door member 23 is slidably supported in the width direction Y with respect to the second door member 22 . Further, the fourth door member 24 extends in the width direction Y between the second projecting position E2 (see FIGS. 5, 6 and 9) and the second retracted position R2 (see FIGS. 3, 7 and 8). It is movably supported by the second door member 22 . Here, the fourth door member 24 is slidably supported in the width direction Y with respect to the second door member 22 .

The first protruding position E1 is a position where the third door member 23 protrudes toward the first widthwise side Y1 with respect to the second door member 22. It is the position of the second side Y2. 5 and 6, the first projecting position E1 is a state in which the posture of the second door member 22 is switched to the standing posture P3, and the third door member 23 is positioned relative to the first rail 41. This is the position where the first side in the width direction abuts from the second side Y2. Also, the first retracted position R1 is a position where the third door member 23 does not interfere with other members (for example, the first rail 41) when the posture of the second door member 22 is switched.

The shape of the end portion of the third door member 23 on the first widthwise side Y1 is formed to match the shape of the side surface of the first rail 41 on the second widthwise side Y2. Specifically, as shown in FIG. 5, the first rail 41 is formed with a groove extending in the longitudinal direction X that opens to the side surface of the first rail 41 on the second side Y2 in the width direction. The side surface of the first rail 41 on the width direction second side Y2 is formed along a vertical plane orthogonal to the width direction Y as a whole. Accordingly, as shown in FIGS. 5 and 8, the end portion of the third door member 23 on the first side Y1 in the width direction is formed to extend parallel to the vertical direction Z. As shown in FIG. Therefore, in the state where the posture of the second door member 22 is switched to the standing posture P3, the third door member 23 positioned at the first projecting position E1 extends over the entire area in the vertical direction Z (however, the groove portion is ), it abuts against the first rail 41 from the width direction second side Y2. That is, between the third door member 23 positioned at the first projecting position E1 and the first rail 41, no large gap is formed over the entire area in the vertical direction Z (no gap is substantially formed). Further, when the posture of the second door member 22 is switched to the standing posture P3 and the third door member 23 is positioned at the first projecting position E1, the upper end of the third door member 23 is positioned at the first upper surface 41a. and the second upper surface 42a, and the lower end of the third door member 23 is arranged so as to abut on the floor 2. As shown in FIG. Therefore, the end portion of the second portion 6b of the opening 6 on the width direction first side Y1 is positioned at the first projecting position E1 in a state where the posture of the second door member 22 is switched to the standing posture P3. 3 It is closed by the door member 23 .

The second protruding position E2 is a position where the fourth door member 24 protrudes toward the second widthwise side Y2 with respect to the second door member 22, and the second retracted position R2 is located further in the widthwise direction than the second protruding position E2. It is the position of the first side Y1. As shown in FIGS. 5, 6, and 9, the second projecting position E2 is a state in which the posture of the second door member 22 is switched to the standing posture P3, and the fourth door member 24 is in the second position. It is a position where it abuts against the rail 42 from the width direction first side Y1. The second retracted position R2 is a position where the fourth door member 24 does not interfere with other members (for example, the second rail 42) when the posture of the second door member 22 is switched.

The shape of the end of the fourth door member 24 on the second widthwise side Y2 is formed to match the shape of the side surface of the second rail 42 on the first widthwise side Y1. Specifically, as shown in FIG. 5, the second rail 42 is formed with a groove extending in the longitudinal direction X that opens to the side surface of the second rail 42 on the first side Y1 in the width direction. As a whole, the side surface of the second rail 42 on the first widthwise side Y1 is formed such that the upper portion protrudes toward the first widthwise side Y1 with respect to the lower portion. Accordingly, as shown in FIGS. 5 and 8, the end of the fourth door member 24 on the second widthwise side Y2 has a lower portion that protrudes toward the second widthwise side Y2 with respect to the upper portion. is formed as Therefore, in the state where the posture of the second door member 22 is switched to the standing posture P3, the fourth door member 24 located at the second projecting position E2 extends over the entire area in the vertical direction Z (however, the groove portion is ), it abuts on the second rail 42 from the width direction first side Y1. That is, between the fourth door member 24 positioned at the second projecting position E2 and the second rail 42, no large gap is formed over the entire area in the vertical direction Z (no gap is substantially formed). Further, when the posture of the second door member 22 is switched to the standing posture P3 and the fourth door member 24 is positioned at the second projecting position E2, the upper end of the fourth door member 24 is positioned at the first upper surface 41a. and the second upper surface 42 a , and the lower end of the fourth door member 24 is arranged to contact the floor 2 . Therefore, the end portion of the second portion 6b of the opening portion 6 on the second width direction side Y2 is positioned at the second projecting position E2 in a state where the posture of the second door member 22 is switched to the standing posture P3. 4 It is closed by the door member 24 .

As shown in FIGS. 3 to 6, in this embodiment, the fire door 20 includes a first door member 21, a second door member 22, a third door member 23, and a fourth door member 24. A fifth door member 25 provided on the first side Y1 in the width direction with respect to the rail 41, and a sixth door member 26 provided on the second side Y2 in the width direction with respect to the second rail 42. . Here, each of the fifth door member 25 and the sixth door member 26 is configured by a plate-like member and arranged in a posture along a vertical plane perpendicular to the longitudinal direction X. As shown in FIG.

The fifth door member 25 is movable in the width direction Y between a third projecting position E3 (see FIGS. 5, 6 and 9) and a third retracted position R3 (see FIGS. 3, 4 and 7). , is supported by a first fixing member 31 fixed to the floor 2 . Here, the fifth door member 25 is slidably supported in the width direction Y with respect to the first fixing member 31 . By moving in the width direction Y between the third projecting position E3 and the third retracting position R3, the fifth door member 25 is positioned below the first upper surface 41a and the second upper surface 42a in the opening 6. It opens and closes the portion on the width direction first side Y1 from the first rail 41 (hereinafter referred to as "third portion 6c"). Further, the sixth door member 26 moves in the width direction Y between a fourth projecting position E4 (see FIGS. 5, 6 and 9) and a fourth retracted position R4 (see FIGS. 3, 4 and 7). It is possible to be supported by a second fixing member 32 fixed to the floor 2 . Here, the sixth door member 26 is slidably supported in the width direction Y with respect to the second fixing member 32 . By moving in the width direction Y between the fourth projecting position E4 and the fourth retracted position R4, the sixth door member 26 is positioned below the first upper surface 41a and the second upper surface 42a in the opening 6. It opens and closes the portion on the second side Y2 in the width direction of the second rail 42 (hereinafter referred to as the "fourth portion 6d").

The third projecting position E3 is a position where the fifth door member 25 projects toward the second widthwise side Y2 with respect to the first fixing member 31. It is the position of the first side Y1. The third protruding position E3 is a position where the fifth door member 25 contacts the first rail 41 from the width direction first side Y1. As described above, the power supply line 43 has the dividing portion 43a at the position in the longitudinal direction X where the fire door 20 is installed, and as shown in FIG. The member 25 contacts the first rail 41 from the width direction first side Y1 at the formation position of the dividing portion 43a. Further, the third retracted position R3 is a position where the entire fifth door member 25 is arranged on the first side Y1 in the width direction with respect to the travel path 4 (that is, when the fifth door member 25 passes through the opening 6 of the vehicle 1). position) that does not interfere with

The shape of the end portion of the fifth door member 25 on the second widthwise side Y2 is formed according to the shape of the side surface of the first rail 41 on the first widthwise side Y1. Specifically, as shown in FIG. 5, the first rail 41 is formed with a groove extending in the longitudinal direction X, which opens to the side surface of the first rail 41 in the width direction Y1. The side surface of the first rail 41 on the width direction first side Y1 is formed along a vertical plane orthogonal to the width direction Y as a whole. Accordingly, as shown in FIGS. 3 and 7, the end of the fifth door member 25 on the second side Y2 in the width direction is formed to extend parallel to the vertical direction Z. As shown in FIG. Therefore, the fifth door member 25 located at the third protruding position E3 is positioned in the width direction with respect to the first rail 41 over the entire area in the vertical direction Z (excluding the position where the opening of the groove is formed). It abuts from the first side Y1. That is, between the fifth door member 25 positioned at the third projecting position E3 and the first rail 41, a large gap is not formed over the entire area in the vertical direction Z (no gap is substantially formed). Further, when the fifth door member 25 is positioned at the third protruding position E3, the upper end of the fifth door member 25 is arranged at the same height as or approximately the same height as the first upper surface 41a and the second upper surface 42a. At the same time, the lower end of the fifth door member 25 is arranged so as to contact the floor 2 . Therefore, the third portion 6c of the opening 6 is closed by the fifth door member 25 positioned at the third projecting position E3.

The fourth protruding position E4 is a position where the sixth door member 26 protrudes toward the first widthwise side Y1 with respect to the second fixing member 32. It is the position of the second side Y2. The fourth protruding position E4 is a position where the sixth door member 26 contacts the second rail 42 from the width direction second side Y2. Further, the fourth retracted position R4 is a position where the entire sixth door member 26 is arranged on the second side Y2 in the width direction of the travel locus 4 (that is, when the sixth door member 26 passes through the opening 6 of the vehicle 1). position) that does not interfere with

The shape of the end portion of the sixth door member 26 on the first widthwise side Y1 is formed in accordance with the shape of the side surface of the second rail 42 on the second widthwise side Y2. Specifically, as shown in FIG. 5, the second rail 42 is formed with a groove extending in the longitudinal direction X that opens to the side surface of the second width direction Y2 of the second rail 42. As a whole, the side surface of the second rail 42 on the second widthwise side Y2 is formed such that the upper portion protrudes toward the second widthwise side Y2 with respect to the lower portion. Accordingly, as shown in FIGS. 5 and 7, the end of the sixth door member 26 on the first widthwise side Y1 has a lower portion that protrudes toward the first widthwise side Y1 with respect to the upper portion. is formed as Therefore, the sixth door member 26 located at the fourth protruding position E4 is positioned in the width direction with respect to the second rail 42 over the entire area in the vertical direction Z (excluding the position where the opening of the groove is formed). It abuts from the second side Y2. That is, between the sixth door member 26 positioned at the fourth projecting position E4 and the second rail 42, a large gap is not formed over the entire area in the vertical direction Z (no gap is substantially formed). Further, when the sixth door member 26 is positioned at the fourth protruding position E4, the upper end of the sixth door member 26 is arranged at the same or approximately the same height as the first upper surface 41a and the second upper surface 42a. At the same time, the lower end of the sixth door member 26 is arranged so as to contact the floor 2 . Therefore, the fourth portion 6d of the opening 6 is closed by the sixth door member 26 positioned at the fourth projecting position E4.

As described above, the fire door 20 includes the first door member 21 that opens and closes the first portion 6a of the opening 6, and the second and third door members 22 and 23 that open and close the second portion 6b of the opening 6. , and a fourth door member 24 , a fifth door member 25 for opening and closing the third portion 6 c of the opening 6 , and a sixth door member 26 for opening and closing the fourth portion 6 d of the opening 6 . Normally, the first door member 21 is held at the open position P2, the second door member 22 is held at the tilted posture P4, the third door member 23 is held at the first retracted position R1, and the fourth door member 24 is held at the first retracted position R1. The opening 6 is opened by being held at the second retracted position R2, the fifth door member 25 is held at the third retracted position R3, and the sixth door member 26 is held at the fourth retracted position R4. (see FIGS. 3, 4 and 7).

When the occurrence of a fire is detected, the first door member 21 is moved to the closed position P1, the posture of the second door member 22 is switched to the standing posture P3, and the third door member 23 protrudes to the first position. The fourth door member 24 is moved to the second projecting position E2, the fifth door member 25 is moved to the third projecting position E3, and the sixth door member 26 is moved to the fourth projecting position E4. By doing so, the opening 6 is closed (see FIGS. 5, 6, and 9). At this time, the lower surface 21a of the first door member 21 positioned at the closed position P1 is the upper end portion of the second door member 22 in the standing posture P3, the upper end portion of the third door member 23 positioned at the first projecting position E1, and the upper end portion of the third door member 23 positioned at the first projecting position E1. The upper end of the fourth door member 24 positioned at the second protruding position E2, the upper end of the fifth door member 25 positioned at the third protruding position E3, and the upper end of the sixth door member 26 positioned at the fourth protruding position E4. It abuts on each of the parts from the upper side. The lower surface 21a of the first door member 21 positioned at the closed position P1 is positioned at the second door member 22 in the standing posture P3, the third door member 23 positioned at the first projecting position E1, and the second projecting position E2. The first upper surface 41a is attached to the upper end of at least one of the fourth door member 24, the fifth door member 25 positioned at the third projecting position E3, and the sixth door member 26 positioned at the fourth projecting position E4. and the second upper surface 42a.

Although the details are omitted, when the occurrence of fire is detected, the first door member 21 is released from the open position P2 and descends to the closed position P1 by its own weight. The opening and closing mechanisms of the second door member 22, the third door member 23, the fourth door member 24, the fifth door member 25, and the sixth door member 26 in the fire door 20 according to this embodiment will be described below. .

The second door member 22 is configured to switch between a standing posture P3 and a tilted posture P4 by swinging about a swing axis A along the floor 2 and in a direction intersecting the travel path 3. It is Here, as shown in FIGS. 4, 6, 8, and 9, the swing axis A is parallel to the floor 2 and perpendicular to the travel path 3, that is, , the axis along the width direction Y. As shown in FIG. 6, the swing axis A is arranged on the first longitudinal side X1 with respect to the second door member 22 in the standing posture P3. The upper end of the second door member 22 in the standing posture P3 moves toward the first side X1 in the longitudinal direction. By swinging around A, the posture of the second door member 22 is switched to the tilted posture P4. The second door member 22 is supported by a supporting member fixed to the floor 2 so as to be capable of swinging about a swing axis A. As shown in FIG.

The fire door 20 includes an urging device 50 that urges the second door member 22 toward the standing posture P3, and a holding device that holds the second door member 22 in the tilted posture P4 against the urging force of the urging device 50. 80 and . Then, the fire door 20 is configured so that the posture of the second door member 22 is switched from the tilted posture P4 to the standing posture P3 by the biasing force of the biasing device 50 when the holding device 80 releases the tilting posture P4. is configured to Although the details are omitted, the fire door 20 is provided with a restriction mechanism that restricts the posture of the second door member 22 from swinging from the upright posture P3 to the side opposite to the tilted posture P4. The posture of the second door member 22 is such that swinging toward the side opposite to the tilting posture P4 is restricted by the regulation mechanism and swinging toward the tilting posture P4 is restricted by the urging device 50. The standing posture P3 is maintained.

The holding device 80 is configured to hold the second door member 22 in the tilted posture P4 against the urging force of the urging device 50 in a power supply state in which electric power is supplied. Further, the force of holding the second door member 22 in the tilted posture P4 by the holding device 80 is configured to be released when the power supply to the holding device 80 is stopped. Therefore, when the power supply to the holding device 80 is stopped, the holding by the holding device 80 (holding of the second door member 22 in the tilted posture P4) is released, and the posture of the second door member 22 is changed to Due to the biasing force of the force device 50, the tilted posture P4 is switched to the standing posture P3. Although details are omitted, the article transport equipment 100 is provided with a management device that manages the state of power supply from a power source (commercial power source, battery for power failure, etc.) to the holding device 80, and a fire detection device or the like. When the occurrence of fire is detected, the power supply to the holding device 80 is stopped by the management device.

As shown in FIGS. 4 and 6, the biasing device 50 is configured to bias the second door member 22 toward the upright position P3 by the biasing force (here, elastic force) of the first biasing member 51. It is Specifically, the first biasing member 51 is a torsion spring (torsion coil spring), and is provided so that its central axis coincides with the swing axis A. As shown in FIG. One arm of the torsion spring that constitutes the first biasing member 51 is connected to the second door member 22, and the other arm of the torsion spring that constitutes the first biasing member 51 is connected to the floor. It is connected to part 2. The torsion spring that constitutes the first biasing member 51 exerts an elastic force (restoring force) on the second door member 22 in the standing posture when the posture of the second door member 22 is switched to the tilted posture P4. It is provided so as to act on the P3 side. In this embodiment, the first biasing member 51 corresponds to the "elastic body".

As shown in FIGS. 3 to 6, the fire door 20 transmits power between the second door member 22 and a power source (here, an electric motor 60) that generates an operating force for the second door member 22. A power transmission mechanism 81 is provided. Specifically, the power transmission mechanism 81 includes a first wound body 61, a second wound body 62, a first transmission member 71 wound around the first wound body 61, and a second wound body. and a second transmission member 72 wound around 62 . Here, wires are used as the first transmission member 71 and the second transmission member 72 . The first wound body 61 and the second wound body 62 are rotatably provided around the rotation axis along the width direction Y on the first side X1 in the longitudinal direction from the swing axis A. As shown in FIG. Here, the first wound body 61 and the second wound body 62 are arranged coaxially with each other. Also, the electric motor 60 is provided so as to rotationally drive the first wound body 61 and the second wound body 62 (here, so as to rotationally drive them at the same rotational speed). Note that the power transmission mechanism 81 does not have the first wound body 61 and the second wound body 62 separately, and the first wound body 61 and the second wound body 62 are integrally formed. good too. In this embodiment, each of the first wound body 61 and the second wound body 62 corresponds to the "winding body", and each of the first transmission member 71 and the second transmission member 72 corresponds to the "transmission member". do.

The first transmission member 71 is connected to the second door member 22 so as to tilt the second door member 22 against the biasing force of the biasing device 50 when wound by the first wound body 61 . there is Here, one end of the first transmission member 71 (the end opposite to the side wound around the first wound body 61) is provided at the end of the second door member 22 on the first side Y1 in the width direction. It is fixed to the third door member 23 that is attached. Specifically, the power transmission mechanism 81 includes a first guide member 91 provided on the second door member 22 to guide the first transmission member 71 . The first transmission member 71 extends from the first wound body 61 toward the second longitudinal side X2 to the first guide member 91, and then extends from the first guide member 91 toward the first widthwise side Y1. It is provided so as to extend to a portion fixed to the third door member 23 .

Further, the second transmission member 72 is connected to the second door member 22 so as to tilt the second door member 22 against the biasing force of the biasing device 50 when wound by the second wound body 62 . It is Here, one end of the second transmission member 72 (the end opposite to the side wound around the second wound body 62) is provided at the end of the second door member 22 on the second side Y2 in the width direction. It is fixed to the fourth door member 24 that is attached. Specifically, the power transmission mechanism 81 includes a second guide member 92 provided on the second door member 22 to guide the second transmission member 72 . The second transmission member 72 extends from the second wound body 62 toward the second longitudinal side X2 to the second guide member 92, and then extends from the second guide member 92 toward the second widthwise side Y2. It is provided so as to extend to a portion fixed to the fourth door member 24 .

Although details are omitted, the third door member 23 is restricted from moving to the second widthwise side Y2 from the first retracted position R1, and the fourth door member 24 is moved to the second retracted position R2. It is regulated to move to the first side Y1 in the width direction. Therefore, in a state where the third door member 23 is positioned at the first retracted position R1 and the fourth door member 24 is positioned at the second retracted position R2 (see FIG. 8), the electric motor 60 drives the first wound body 61 and By rotationally driving the second winding body 62 to wind the first transmission member 71 and the second transmission member 72, the posture of the second door member 22 can be switched from the upright posture P3 to the tilted posture P4 (Fig. 7). Further, in a state where the posture of the second door member 22 is switched to the tilted posture P4 (see FIG. 7), the first transmission member 71 and the second transmission member 72 are connected to the first winding body 61 and the second winding body. 62, the posture of the second door member 22 can be switched from the tilted posture P4 to the standing posture P3 by the biasing force of the biasing device 50 (see FIG. 8).

In this way, the power transmission mechanism 81 rotates the winding body in the direction in which the transmission member is wound (here, the first winding body 61 and the second winding body in the direction in which the first transmission member 71 and the second transmission member 72 are wound). 2 rotation of the winding body 62) and the change of the posture of the second door member 22 to the tilting posture P4 side, and rotation of the winding body in the direction to let out the transmission member (here, the rotation of the first transmission member 71 and the rotation of the first wound body 61 and the second wound body 62 in the direction to feed out the second transmission member 72) and the posture change of the second door member 22 to the standing posture P3 side. ing. That is, in the present embodiment, the power transmission mechanism 81 rotates the winding body (here, the first winding body 61 and the second winding body 62) and changes the posture of the second door member 22. It corresponds to a "transmission mechanism" that interlocks using a transmission member (here, the first transmission member 71 and the second transmission member 72) that is wound around. In other words, the transmission mechanism is configured using the first transmission member 71 , the second transmission member 72 , the first guide member 91 and the second guide member 92 provided in the power transmission mechanism 81 .

The holding device 80 locks the rotation of the first winding body 61 and the second winding body 62 in a state in which the posture of the second door member 22 is switched to the tilting posture P4, thereby holding the second door member 22 in position. It is configured to hold the tilted posture P4 against the biasing force of the biasing device 50 . Here, the holding device 80 holds the posture of the second door member 22 in the tilted posture P4 by locking the rotation of the electric motor 60 that rotationally drives the first wound body 61 and the second wound body 62. is configured as Specifically, the electric motor 60 is provided with an excitation brake (electromagnetic brake) that operates when electric power is supplied to brake the rotating shaft (motor shaft) of the electric motor 60 . Although details are omitted here, as an example, a first friction member that rotates integrally with the motor shaft, a second friction member that frictionally engages with the first friction member, and a second friction member that is separated from the first friction member. and an electromagnet for generating a magnetic force to bring the second friction member into contact with the first friction member against the biasing force of the biasing member. I am using As described above, the holding device 80 is an excitation brake incorporated in the electric motor 60, and locks (electromagnetically locks) the rotation of the electric motor 60 using the magnetic force generated in the power supply state. It is configured to hold the second door member 22 in the tilted posture P4 by using the magnetic force.

In this embodiment, the power transmission mechanism 81 transmits power not only between the electric motor 60 and the second door member 22, but also between the electric motor 60 and the third door member 23 and the fourth door member 24. is configured as That is, the driving force of the electric motor 60 is used not only to operate the second door member 22 but also to operate the third door member 23 and the fourth door member 24 . Specifically, as described above, one end of the first transmission member 71 is fixed to the third door member 23 and one end of the second transmission member 72 is fixed to the fourth door member 24 . The second door member 22 includes a second biasing member 52 that biases the third door member 23 toward the width direction first side Y1 (that is, the first projecting position E1 side), and the fourth door member 24. A third biasing member 53 that biases toward the width direction second side Y2 (that is, the second projecting position E2 side) is provided. Here, compression springs (compression coil springs) are used as the second biasing member 52 and the third biasing member 53 .

Therefore, in a state where the third door member 23 is positioned at the first protruding position E1 and the fourth door member 24 is positioned at the second protruding position E2 (see FIG. 9), the electric motor 60 drives the first wound body 61 and By rotationally driving the second wound body 62 to wind the first transmission member 71 and the second transmission member 72, the biasing force (here, the elastic force) of the second biasing member 52 and the third biasing member 53 ), the third door member 23 is moved in the width direction Y from the first projecting position E1 to the first retracted position R1, and the fourth door member 24 is moved from the second projecting position E2 to the second retracted position R2. It can be moved in direction Y (see FIG. 8). Further, in a state where the third door member 23 is positioned at the first retracted position R1 and the fourth door member 24 is positioned at the second retracted position R2 (see FIG. 8), the first transmission member 71 and the second transmission member 72 from the first winding body 61 and the second winding body 62, the third door member 23 is pushed by the biasing force (here, elastic force) of the second biasing member 52 and the third biasing member 53. The fourth door member 24 can be moved in the width direction Y from the first retracted position R1 to the first projecting position E1 and the fourth door member 24 can be moved in the width direction Y from the second retracting position R2 to the second projecting position E2 (see FIG. 9). ).

As described above, in the present embodiment, the first winding body 61 and the second winding body 62 are driven to rotate by the electric motor 60 to wind the first transmission member 71 and the second transmission member 72. The posture of the second door member 22 is switched from the upright posture P3 to the tilted posture P4, the third door member 23 moves in the width direction Y from the first projecting position E1 to the first retracted position R1, and furthermore, the fourth door member 24 is moved. It moves in the width direction Y from the second projected position E2 to the second retracted position R2. Further, by unrolling the first transmission member 71 and the second transmission member 72 from the first winding body 61 and the second winding body 62, the posture of the second door member 22 is switched from the tilting posture P4 to the standing posture P3. The third door member 23 moves in the width direction Y from the first retracted position R1 to the first projected position E1, and the fourth door member 24 moves in the width direction Y from the second retracted position R2 to the second projected position E2. do.

That is, the power transmission mechanism 81 changes the posture of the second door member 22 from the tilted posture P4 to the standing posture P3, moves the third door member 23 from the first retracted position R1 to the first projected position E1, The movement of the fourth door member 24 from the second retracted position R2 to the second projected position E2 is interlocked, and the posture of the second door member 22 is changed from the upright posture P3 to the tilted posture P4, and the third door member 23 is moved. The movement from the first projecting position E1 to the first retracted position R1 and the movement of the fourth door member 24 from the second projecting position E2 to the second retracted position R2 are interlocked. In this embodiment, the power transmission mechanism 81 interlocks the change of the posture of the second door member 22, the movement of the third door member 23 in the width direction Y, and the movement of the fourth door member 24 in the width direction Y. Equivalent to "interlocking mechanism". In other words, the interlocking mechanism includes the first winding body 61, the second winding body 62, the first transmission member 71, the second transmission member 72, the first guide member 91, and the second guide member provided in the power transmission mechanism 81. 92. Since such an interlocking mechanism is provided, when the posture of the second door member 22 is held in the tilted posture P4 against the biasing force of the biasing device 50 (the first biasing member 51), the third biasing posture is maintained. The position of the door member 23 is held at the first retracted position R1 against the biasing force of the second biasing member 52, and the position of the fourth door member 24 is against the biasing force of the third biasing member 53. is held at the second retracted position R2.

In this embodiment, the spring constant of the torsion spring that constitutes the first biasing member 51, the spring constant of the compression spring that constitutes the second biasing member 52, and the spring constant of the compression spring that constitutes the third biasing member 53 are are set so that the intermediate state shown in FIG. 8 is realized when switching the state of the fire door 20 between the open state shown in FIG. 7 and the closed state shown in FIG. That is, in this embodiment, the posture of the second door member 22 is switched to the standing posture P3, the third door member 23 is positioned at the first projecting position E1, and the fourth door member 24 is positioned at the second projecting position E2. (see FIG. 9), the electric motor 60 rotates the first wound body 61 and the second wound body 62 to wind the first transmission member 71 and the second transmission member 72. After the door member 23 has moved to the first retracted position R1 and the fourth door member 24 has moved to the second retracted position R2 (see FIG. 8), the posture of the second door member 22 changes from the upright posture P3 to the tilted posture P4. Switched (see FIG. 7). Further, in a state where the posture of the second door member 22 is switched to the tilted posture P4, the third door member 23 is positioned at the first retracted position R1, and the fourth door member 24 is positioned at the second retracted position R2 (FIG. 7), when the first transmission member 71 and the second transmission member 72 are let out from the first winding body 61 and the second winding body 62, the posture of the second door member 22 changes from the tilting posture P4 to the standing posture P3. After switching (see FIG. 8), the third door member 23 moves to the first projecting position E1 and the fourth door member 24 moves to the second projecting position E2 (see FIG. 9).

In this embodiment, the driving force of the electric motor 60 is used not only to operate the second door member 22, the third door member 23, and the fourth door member 24, but also to operate the fifth door member 25 and the sixth door member 26. It is also used to operate Specifically, as shown in FIGS. 5, 6, and 9, the fire door 20 is wound around the first winding body 61 and has one end (the side wound around the first winding body 61). The third transmission member 73 fixed to the fifth door member 25 and the second winding body 62 is wound around the second winding body 62, and one end (the end opposite to the second winding body 62) is wound around the second winding body 62. a fourth transmission member 74 fixed to the sixth door member 26 at the end opposite to the side thereof. The fire door 20 also includes a third guide member 93 and a fourth guide member 94 for guiding the third transmission member 73, and a fifth guide member 95 and a sixth guide member 95 for guiding the fourth transmission member 74. A guide member 96 is provided.

As shown in FIG. 6, the third guide member 93 and the fifth guide member 95 are fixed to the floor 2 between the first rail 41 and the second rail 42 in the width direction Y, and the fourth guide member 94 is , and the sixth guide member 96 is fixed to the floor portion 2 on the width direction first side Y1 with respect to the first rail 41, and the sixth guide member 96 is fixed on the floor portion 2 on the width direction second side Y2 with respect to the second rail 42. there is Then, as shown in FIGS. 6 and 9, the third transmission member 73 extends from the first wound body 61 toward the second longitudinal side X2 to the third guide member 93, and then, It extends from the third guide member 93 toward the width direction first side Y1 to the fourth guide member 94 through the gap with the floor 2, and then extends from the fourth guide member 94 toward the width direction second side Y2. 5 is provided so as to extend to a fixing portion with the door member 25 . Further, the fourth transmission member 74 extends from the second wound body 62 toward the second longitudinal side X2 to the fifth guide member 95, passes through the gap between the second rail 42 and the floor portion 2, 5 extends from the guide member 95 toward the second side Y2 in the width direction to the sixth guide member 96, and then extends from the sixth guide member 96 toward the first side Y1 in the width direction to a fixing portion with the sixth door member 26. is provided as follows. Here, wires are used as the third transmission member 73 and the fourth transmission member 74 .

The fire door 20 includes a fourth biasing member 54 that biases the fifth door member 25 toward the widthwise second side Y2 (that is, the third projecting position E3 side), and the sixth door member 26 toward the widthwise direction. and a fifth biasing member 55 that biases toward the first side Y1 (that is, the fourth projecting position E4 side). Here, tension springs (extension coil springs) are used as the fourth biasing member 54 and the fifth biasing member 55 . Therefore, in a state where the fifth door member 25 is positioned at the third protruding position E3 and the sixth door member 26 is positioned at the fourth protruding position E4 (see FIG. 9), the electric motor 60 drives the first wound body 61 and By rotationally driving the second wound body 62 to wind the third transmission member 73 and the fourth transmission member 74, the biasing force (here, the elastic force) of the fourth biasing member 54 and the fifth biasing member 55 ), the fifth door member 25 is moved in the width direction Y from the third projecting position E3 to the third retracted position R3, and the sixth door member 26 is moved from the fourth projecting position E4 to the fourth retracted position R4. It can be moved in direction Y (see FIG. 7). Further, when the fifth door member 25 is positioned at the third retracted position R3 and the sixth door member 26 is positioned at the fourth retracted position R4 (see FIG. 7), the third transmission member 73 and the fourth transmission member 74 from the first winding body 61 and the second winding body 62, the fifth door member 25 is pushed by the biasing force (here, elastic force) of the fourth biasing member 54 and the fifth biasing member 55. The sixth door member 26 can be moved in the width direction Y from the third retracted position R3 to the third projecting position E3, and the sixth door member 26 can be moved in the width direction Y from the fourth retracted position R4 to the fourth projecting position E4.

The width direction Y movement of the fifth door member 25 from the third projecting position E3 to the third retracted position R3 and the width direction Y movement of the sixth door member 26 from the fourth projecting position E4 to the fourth retracted position R4 , the posture of the second door member 22 is changed from the standing posture P3 to the tilted posture P4, and the movement of the third door member 23 in the width direction Y from the first projecting position E1 to the first retracted position R1. and movement in the width direction Y from the second projecting position E2 of the fourth door member 24 to the second retracted position R2. Further, the movement of the fifth door member 25 in the width direction Y from the third retracted position R3 to the third projected position E3 and the movement of the sixth door member 26 from the fourth retracted position R4 to the fourth projected position E4 in the width direction Y , the posture of the second door member 22 is changed from the tilted posture P4 to the standing posture P3, and the movement of the third door member 23 in the width direction Y from the first retracted position R1 to the first projecting position E1. and the movement in the width direction Y from the second retracted position R2 of the fourth door member 24 to the second projected position E2.

In this manner, the fire door 20 of the present embodiment can change the posture of the second door member 22, move the third door member 23 in the width direction Y, move the fourth door member 24 in the width direction Y, and move the third door member 24 in the width direction Y. The movement of the fifth door member 25 in the width direction Y and the movement of the sixth door member 26 in the width direction Y are interlocked. As a result, in the state where the posture of the second door member 22 is held in the tilted posture P4 against the biasing force of the biasing device 50 (first biasing member 51), the position of the fifth door member 25 is the first position. The sixth door member 26 is held at the third retracted position R3 against the biasing force of the fourth biasing member 54, and the sixth door member 26 is moved to the fourth retracted position R4 against the biasing force of the fifth biasing member 55. retained.

Normally, as shown in FIGS. 1, 3, 4, and 7, the first door member 21 is held at the open position P2, the second door member 22 is held at the tilted posture P4, and the third door member 22 is held at the tilted posture P4. The door member 23 is held at the first retracted position R1, the fourth door member 24 is held at the second retracted position R2, the fifth door member 25 is held at the third retracted position R3, and the sixth door member 26 is held at the third retracted position R3. 4 It is held in the retracted position R4. The fire door 20 includes a sensor (not shown) for detecting that the first door member 21 is positioned at the open position P2, and a second door member 22 for detecting that the posture of the second door member 22 is switched to the tilted posture P4. 1 sensor S1, a second sensor S2 that detects that the third door member 23 is positioned at the first retracted position R1, and a third sensor that detects that the fourth door member 24 is positioned at the second retracted position R2. S3, a fourth sensor S4 for detecting that the fifth door member 25 is positioned at the third retracted position R3, and a fifth sensor S5 for detecting that the sixth door member 26 is positioned at the fourth retracted position R4. , is equipped with Then, the control device that controls the running of the vehicle 1 acquires the detection information of each of these sensors, the first door member 21 is positioned at the open position P2, and the posture of the second door member 22 is switched to the tilted posture P4. The third door member 23 is positioned at the first retracted position R1, the fourth door member 24 is positioned at the second retracted position R2, the fifth door member 25 is positioned at the third retracted position R3, and the sixth door member 25 is positioned at the third retracted position R3. It is configured to allow the vehicle 1 to pass through the opening 6 on condition that the member 26 is positioned at the fourth retracted position R4.

As shown in FIGS. 7 to 9, the first sensor S1 is fixed to the floor 2, and the second door member 22 has a tilted posture P4. A first detected object T1 that is detected by the first sensor S1 is provided. The second sensor S2 is fixed to the second door member 22, and the third door member 23 has a second sensor S2 detected by the second sensor S2 when the third door member 23 is positioned at the first retracted position R1. A detected body T2 is provided. The third sensor S3 is fixed to the second door member 22, and the fourth door member 24 has a third sensor S3 detected by the third sensor S3 when the fourth door member 24 is positioned at the second retracted position R2. A detected body T3 is provided. Further, the fourth sensor S4 is fixed to the floor 2, and the fifth door member 25 has a fourth detected sensor S4 detected by the fourth sensor S4 when the fifth door member 25 is positioned at the third retracted position R3. A body T4 is provided. Further, the fifth sensor S5 is fixed to the floor 2, and the sixth door member 26 has a fifth detected sensor S5 detected by the fifth sensor S5 when the sixth door member 26 is positioned at the fourth retracted position R4. A body T5 is provided.

[Other embodiments]
Next, another embodiment of the fire door will be described.

(1) In the above embodiment, the driving force of the electric motor 60 is used not only to operate the second door member 22, the third door member 23, and the fourth door member 24, but also to operate the fifth door member 25 and the fourth door member 25. A configuration that is also used to operate the 6-door member 26 has been described as an example. However, the fire door 20 is not limited to such a configuration. A power source (for example, an electric motor) that generates an operating force for the door member 26 may be provided.

(2) In the above-described embodiment, the holding device 80 locks the rotation of the electric motor 60 by using the magnetic force generated in the power feeding state, and the magnetic force generated in the power feeding state is used to lock the second door member 22 . has been described as an example of the configuration in which the posture is held at the tilted posture P4. However, without being limited to such a configuration, for example, the holding device 80 is engaged with the second door member 22 and an engagement fixing member fixed to the floor 2 (for example, by using a locking pin). The holding device 80 engages the second door member 22 using the magnetic force generated in the power supply state. By maintaining the engagement with the engagement fixing member against the biasing force of the biasing body (for example, by holding the position of the locking pin by the magnetic force generated by the electromagnet), the magnetism generated in the power supply state It is possible to employ a configuration in which the posture of the second door member 22 is held in the tilted posture P4 using force. In this case, when the power supply to the holding device 80 is stopped, the second door member 22 is released from being held in the tilted posture P4 by the biasing force of the biasing body, and the biasing device 50 (first biasing The posture of the second door member 22 is switched from the tilted posture P4 to the standing posture P3 by the biasing force of the member 51). In this case, the fire door 20 does not include the electric motor 60 or the power transmission mechanism (the power transmission mechanism 81 in the above embodiment), and the second door member 22 is tilted from the upright posture P3 against the biasing force of the biasing device 50. The posture change to the posture P4 can also be configured to be manually performed.

Although details are omitted, the third door member 23 is held at the first retracted position R1, the fourth door member 24 is held at the second retracted position R2, and the fifth door member 25 is held at the third retracted position R3. Alternatively, similarly, the sixth door member 26 is held at the fourth retracted position R4 not by locking the rotation of the electric motor 60, but by maintaining the engagement using magnetic force. be able to.

(3) In the above-described embodiment, the holding device 80 holds the second door member 22 in the tilted posture P4 using the magnetic force generated in the powered state. However, without being limited to such a configuration, for example, a configuration in which the holding device 80 holds the second door member 22 in the tilted posture P4 using fluid pressure (pneumatic pressure, hydraulic pressure, etc.) generated in the power supply state. can also be

(4) In the above-described embodiment, the configuration in which the biasing device 50 biases the second door member 22 toward the standing posture P3 by the elastic force of the first biasing member 51 has been described as an example. However, the configuration is not limited to such a configuration, and for example, a configuration in which the biasing device 50 biases the second door member 22 toward the standing posture P3 by magnetic force or fluid pressure (air pressure, hydraulic pressure, etc.) is adopted. can also

(5) In the above embodiment, the holding device 80 is configured to hold the second door member 22 in the tilted posture P4 against the biasing force of the biasing device 50 in the power supply state in which power is supplied. explained as. However, it is not limited to such a configuration. When the holding release mechanism for releasing the holding of the second door member 22 is operated, the state in which the holding of the second door member 22 by the holding device 80 is released is maintained in a non-powered state. can be In this case, when the management device that manages the state of power supply to the holding device 80 from the power supply (commercial power supply, battery for power failure, etc.) detects the occurrence of a fire by a fire detection device or the like, the holding release mechanism is supplied to the holding device 80, and the power supply to the holding device 80 is stopped after the holding release mechanism is operated.

(6) In the above embodiment, the spring constant of the torsion spring that constitutes the first biasing member 51, the spring constant of the compression spring that constitutes the second biasing member 52, and the compression spring that constitutes the third biasing member 53 Each of the spring constants of the springs is set such that the intermediate state shown in FIG. 8 is achieved when switching the state of the fire door 20 between the open state shown in FIG. 7 and the closed state shown in FIG. The configuration has been described as an example. However, without being limited to such a configuration, the spring constant of the torsion spring that constitutes the first biasing member 51, the spring constant of the compression spring that constitutes the second biasing member 52, and the third biasing member 53 The spring constant of the compression spring constituting 24 may be set to coincide with the timing at which the position of 24 becomes the second projecting position E2.

(7) In the above embodiment, the third door member 23 is slidably supported in the width direction Y with respect to the second door member 22, as an example. However, the configuration is not limited to such a configuration. The third door member 23 swings with respect to the second door member 22, thereby moving between the first projecting position E1 and the first retracting position E1. It can also be configured to move in the width direction Y between the position R1. Further, in the above-described embodiment, the configuration in which the fourth door member 24 is slidably supported in the width direction Y with respect to the second door member 22 has been described as an example. However, without being limited to such a configuration, for example, when the fourth door member 24 is pivoted with respect to the second door member 22 (when the posture of the second door member 22 is switched to the upright posture P3) The fourth door member 24 swings relative to the second door member 22 to move between the second projecting position E2 and the second retracted position E2. It can also be configured to move in the width direction Y between the position R2.

(8) In the above embodiment, the fifth door member 25 is slidably supported in the width direction Y with respect to the first fixing member 31, as an example. However, the fifth door member 25 is not limited to such a configuration. The door member 25 can also be configured to move in the width direction Y between the third projecting position E3 and the third retracted position R3 by swinging with respect to the first fixing member 31 . Further, in the above embodiment, the sixth door member 26 is slidably supported in the width direction Y with respect to the second fixing member 32, as an example. However, the sixth door member 26 is not limited to such a configuration. The door member 26 can also be configured to move in the width direction Y between the fourth projecting position E4 and the fourth retracted position R4 by swinging with respect to the second fixing member 32 .

(9) In the above embodiment, the configuration in which the fire door 20 includes the fifth door member 25 and the sixth door member 26 has been described as an example. However, without being limited to such a configuration, when the side surface of the first rail 41 on the first side Y1 in the width direction and the wall portion 5 are arranged in contact with or close to each other (for example, when the vehicle 1 41), the fire door 20 may be configured without the fifth door member 25. In addition, when the side surface of the second rail 42 on the width direction second side Y2 and the wall portion 5 are arranged in contact with or close to each other (for example, when the vehicle 1 is positioned on the width direction second side Y2 with respect to the second rail 42). The fire door 20 can also be configured without the sixth door member 26 when the second guide ring 12b is not provided. Also, one or both of the fifth door member 25 and the sixth door member 26 are integrally formed with the first door member 21, and configured to move in the vertical direction Z integrally with the first door member 21. can also

(10) In the above embodiment, the configuration in which the fire door 20 includes the third door member 23 and the fourth door member 24 has been described as an example. However, without being limited to such a configuration, the fire door 20 may be configured without one or both of the third door member 23 and the fourth door member 24 . When the fire door 20 does not include the third door member 23, the end of the second door member 22 on the first side Y1 in the width direction is The second door member 22 can be arranged in contact with or adjacent to the side surface of the first rail 41 on the second side Y2 in the width direction. is switched to the upright posture P3, the end of the second door member 22 on the second widthwise side Y2 is arranged in contact with or close to the side surface of the second rail 42 on the first widthwise side Y1. It can be configured as follows. Further, when the fire door 20 does not have the third door member 23, one end of the first transmission member 71 (the end opposite to the side wound around the first wound body 61) is connected to the second door. fixed to the member 22, and when the fire door 20 does not have the fourth door member 24, one end of the second transmission member 72 (the end opposite to the side wound by the second winding 62) is fixed to the second door member 22 . Moreover, when the fire door 20 does not include one or both of the third door member 23 and the fourth door member 24, the fire door 20 includes the first winding body 61 and the first transmission member 71, and the second winding body 61 and the first transmission member 71. A configuration in which only one of the rotating body 62 and the second transmission member 72 is provided is also possible.

(11) In the above embodiment, the lower surface 21a of the first door member 21 positioned at the closed position P1 is the upper end of the second door member 22 in the standing posture P3, and the third door member positioned at the first projecting position E1. 23, the upper end of the fourth door member 24 located at the second projecting position E2, the upper end of the fifth door member 25 located at the third projecting position E3, and the fourth door member 25 located at the fourth projecting position E4. The configuration in which the upper ends of the six door members 26 are brought into contact with each other from the upper side has been described as an example. However, without being limited to such a configuration, for example, the lower portion of the first door member 21 located in the closed position P1 and the upper portion of the second door member 22 in the standing posture P3 face each other in the longitudinal direction X. It is also possible to adopt a configuration in which the upper portion and the lower portion are in contact with each other in the longitudinal direction X as a configuration arranged so as to do so. Similarly, the lower portion of the first door member 21 positioned at the closed position P1 and the upper portion of the third door member 23 positioned at the first projecting position E1 are configured to abut in the longitudinal direction X, and the closed position The lower portion of the first door member 21 positioned at P1 and the upper portion of the fourth door member 24 positioned at the second projecting position E2 are configured to abut in the longitudinal direction X, The lower part of the first door member 21 and the upper part of the fifth door member 25 located at the third protruding position E3 are configured to abut in the longitudinal direction X, or the first door member located at the closed position P1. 21 and the upper part of the sixth door member 26 positioned at the fourth protruding position E4 may be in contact with each other in the longitudinal direction X. As shown in FIG.

(12) In the above embodiment, the power supply line 43 is supported by the first rail 41 along the side surface of the first rail 41 on the width direction first side Y1, and the fifth door positioned at the third protruding position E3. The configuration in which the member 25 contacts the first rail 41 from the width direction first side Y1 at the formation position of the dividing portion 43a of the feeder line 43 has been described as an example. However, without being limited to such a configuration, for example, the power supply line 43 is supported by the first rail 41 along the side surface of the first rail 41 on the width direction second side Y2, and is positioned at the first projecting position E1. The second door member 22 located in the position of the power supply line 43 can be configured to contact the first rail 41 from the width direction second side Y2 at the formation position of the dividing portion 43a of the power supply line 43 .

(13) In the above embodiment, the case where the fire door according to the present disclosure is applied to the article transport facility 100 that transports the articles W by the vehicle 1 has been described as an example. However, without being limited to such a configuration, the fire door according to the present disclosure can also be applied to facilities where vehicles are used for purposes other than transporting goods (for example, facilities for transporting people by vehicles). It is possible.

(14) It should be noted that the configurations disclosed in the above-described embodiments may be applied in combination with configurations disclosed in other embodiments (the combinations) are also possible. Regarding other configurations, the embodiments disclosed in this specification are merely examples in all respects. Therefore, various modifications can be made as appropriate without departing from the scope of the present disclosure.

[Overview of the above embodiment]
An outline of the fire door described above will be described below.

A fire door provided on a travel path of a vehicle traveling guided by a first rail and a second rail installed parallel to each other on a floor and opening and closing an opening through which the vehicle passes, wherein the first rail and a first door member provided above the second rail, and a second door member provided between the first rail and the second rail in the width direction of the travel route, A lower surface of the first door member is in contact with an upper surface of each of the first rail and the second rail, and a portion of the opening above the first rail and the second rail is provided. The second door member has a standing posture in which the second door member stands up from the floor and enters the travel locus of the vehicle; It is configured such that the posture can be switched between a tilted posture rather than a standing posture and a tilted posture in which the second door member is retracted from the travel locus.

In this configuration, in addition to the first door member configured so that the fire door can be lowered to a position to close the portion above the first rail and the second rail in the opening, a second door member provided between the first rail and the second rail in the above. Therefore, the portion of the opening between the first rail and the second rail in the width direction below the upper surfaces of the first rail and the second rail can be opened and closed by the second door member. can. Depending on the shape of the side surface of the first rail or the second rail, a The descending first door member may include a portion that is difficult to approach, but the second door member provided between the first rail and the second rail in the width direction is different from the first door member. It is possible to approach the lateral inner side surfaces of the first rail and the second rail from different directions. Therefore, it is easier to keep the gap between the closed fire door and the first and second rails smaller than when the fire door does not have such a second door member.
Further, according to the above configuration, the opening and closing of the second door member can be performed by switching the posture of the second door member. Therefore, compared to the case where the second door member is opened and closed by sliding the entire second door member vertically or the like, the space for arranging the second door member retracted from the travel locus to open the opening is reduced. There is also the advantage that the structure of each part including the floor can be simplified for securing.

Here, the second door member is configured to switch between the upright posture and the tilted posture by swinging about a swing axis along the floor and in a direction intersecting the travel route. is preferably configured as

According to this configuration, the supporting structure of the second door member can be simplified so that the posture of the second door member can be switched between the standing posture and the tilted posture.

Further, the side on which the first rail is arranged with respect to the second rail in the width direction is defined as a first side, and the side opposite to the first side in the width direction is defined as a second side. a third door member provided at the first-side end of the member; and a fourth door member provided at the second-side end of the second door member, wherein the third door member is between a first protruding position where the third door member protrudes toward the first side with respect to the second door member and a first retracted position on the second side of the first protruding position; a second protruding position where the fourth door member is supported by the second door member so as to be movable in the width direction, and the fourth door member protrudes toward the second side with respect to the second door member; It is supported by the second door member so as to be movable in the width direction between the second retracted position on the first side of the second protruding position, and the first protruding position is the position of the second door member. A position where the third door member abuts against the first rail from the second side in a state where the posture is switched to the standing posture, and the second projecting position is a position where the second door member contacts the first rail. It is preferable that the position where the fourth door member contacts the second rail from the first side in a state where the posture is switched to the standing posture.

According to this configuration, the third door member can be brought into contact with the widthwise inner side surface of the first rail from the side. Therefore, by forming the shape of the end of the third door member on the outside in the width direction (the side opposite to the inside in the width direction) to match the shape of the side surface on the inside in the width direction of the first rail, the third door member and the The third door member can be brought into contact with the first rail so as not to create a large gap with the first rail.
Similarly, according to the above configuration, the fourth door member can be brought into contact with the widthwise inner side surface of the second rail from the side. Therefore, by forming the shape of the widthwise outer end of the fourth door member to match the shape of the widthwise inner side surface of the second rail, a large gap can be formed between the fourth door member and the second rail. The fourth door member can be brought into contact with the second rail so as to prevent the occurrence of
Therefore, according to the above configuration, the gap between the third door member positioned at the first projecting position and the first rail, and the second projecting position, regardless of the shape of the widthwise inner side surfaces of the first rail and the second rail. It is possible to reduce the gap between the fourth door member positioned at the position and the second rail, and it is easy to reduce the gap between the closed fire door and the first and second rails.

In the configuration in which the fire door includes the third door member and the fourth door member as described above, the attitude change of the second door member, the movement of the third door member in the width direction, and the fourth door member An interlocking mechanism interlocking with the movement of the door member in the width direction is provided, and the interlocking mechanism changes the posture of the second door member from the tilted posture to the standing posture, and changes the posture of the third door member to the first door member. Movement of the fourth door member from the retracted position to the first projecting position is interlocked with movement of the fourth door member from the second retracting position to the second projecting position, and movement of the second door member from the standing posture to the posture change to a tilted posture, movement of the third door member from the first projecting position to the first retracted position, and movement of the fourth door member from the second projecting position to the second retracted position. It is preferable to be configured to interlock with.

According to this configuration, the third door member and the fourth door member can be interlocked with the posture change of the second door member. Therefore, there is no need to individually control each door member to properly operate each of the closing and opening of the fire door.

In the fire door having each of the configurations described above, a fifth door member provided on the first side with respect to the first rail, and a sixth door member provided on the second side with respect to the second rail. , wherein the fifth door member has a third protruding position where the fifth door member protrudes toward the second side with respect to a first fixing member fixed to the floor, and from the third protruding position is supported by the first fixed member so as to be movable in the width direction between the third retracted position on the first side, and the sixth door member is supported by the second fixed member fixed to the floor. On the other hand, the sixth door member is movable in the width direction between a fourth protruding position where the sixth door member protrudes to the first side and a fourth retracted position on the second side of the fourth protruding position. The third protruding position is a position where the fifth door member contacts the first rail from the first side, and the fourth protruding position is the sixth door member. It is preferable that the member is in a position where it abuts against the second rail from the second side.

According to this configuration, the fifth door member can be brought into contact with the widthwise outer side surface of the first rail from the side. Therefore, by forming the shape of the widthwise inner end portion of the fifth door member to match the shape of the widthwise outer side surface of the first rail, a large gap can be formed between the fifth door member and the first rail. The fifth door member can be brought into contact with the first rail so as to prevent the occurrence of
Similarly, according to the above configuration, the sixth door member can be brought into contact with the widthwise outer side surface of the second rail from the side. Therefore, by forming the shape of the widthwise inner end portion of the sixth door member to match the shape of the widthwise outer side surface of the second rail, a large gap can be formed between the sixth door member and the second rail. The sixth door member can be brought into contact with the second rail so as to prevent the occurrence of
Therefore, according to the above configuration, the gap between the fifth door member positioned at the third protruding position and the first rail, and the gap between the first rail and the fifth door member positioned at the third protruding position, regardless of the lateral outer side shape of the first rail and the second rail. The gap between the sixth door member positioned at the position and the second rail can be kept small, and the gap between the fire door in the closed state and the first rail and the second rail can be easily kept small.

an urging device for urging the second door member toward the standing posture; and a holding device that holds the second door member in the position of the holding device, when the power supply to the holding device is stopped, the holding by the holding device is released, and the posture of the second door member is changed by the biasing force of the biasing device. It is preferable to adopt a configuration in which the tilting posture is switched to the standing posture.

According to this configuration, the posture of the second door member can be switched from the tilted posture to the standing posture without using electric power. Therefore, even if a power failure or power line disconnection occurs due to a fire, the posture of the second door member can be switched from the tilted posture to the standing posture to close the opening.

In the configuration where the fire door includes the urging device and the holding device as described above, the urging device urges the second door member toward the upright position by an elastic force of an elastic body, thereby holding the holding device. It is preferable that the device is configured to hold the second door member in the tilted posture by using the magnetic force generated in the power supply state.

According to this configuration, the urging device that urges the second door member toward the upright posture and the holding device that holds the second door member in the tilted posture against the urging force of the urging device in the power-supplied state. , can be configured appropriately.

In the configuration in which the holding device holds the second door member in the tilted posture by using the magnetic force generated in the power supply state as described above, the rotation of the winding body and the change in the posture of the second door member are controlled. A transmission mechanism that interlocks using a transmission member wound around the winding body, and an electric motor that rotationally drives the winding body, wherein the transmission mechanism rotates the winding in a direction in which the transmission member is wound. The rotation of the winding body and the change of the posture of the second door member to the tilted posture side are interlocked, and the rotation of the winding body in the direction to let out the transmission member and the standing posture of the second door member. It is preferable that the holding device is configured to interlock with a change in posture to the side, and that the holding device is configured to lock the rotation of the electric motor using a magnetic force generated in the power supply state.

According to this configuration, when the fire door includes an electric motor as a power source for switching the posture of the second door member from the upright posture to the tilted posture, the electric motor is used to appropriately configure the holding device. be able to.
Further, according to the above configuration, since the transmission mechanism is configured using the transmission member wound around the winding body, the winding body and the electric motor can be arranged with respect to the second door member appropriately. It also has the advantage of being easy.

It is sufficient for the fire door according to the present disclosure to exhibit at least one of the effects described above.

1: Vehicle 2: Floor 3: Travel path 4: Travel locus 6: Opening 20: Fire door 21: First door member 21a: Lower surface 22: Second door member 23: Third door member 24: Fourth door member 25: Fifth door member 26: Sixth door member 31: First fixing member 32: Second fixing member 41: First rail 42: Second rail 50: Biasing device 51: First biasing member (elastic body)
60: Electric motor 61: First winding body (winding body)
62: Second wound body (wound body)
71: First transmission member (transmission member)
72: Second transmission member (transmission member)
80: Holding device 81: Power transmission mechanism (interlocking mechanism, transmission mechanism)
A: Swing axis E1: First projecting position E2: Second projecting position E3: Third projecting position E4: Fourth projecting position P3: Standing posture P4: Leaning posture R1: First retracted position R2: Second retracted position R3: Third retraction position R4: Fourth retraction position Y: Width direction Y1: Width direction first side (first side)
Y2: Width direction second side (second side)

Claims (7)

A fire door that is provided on a travel route of a vehicle that travels while being guided by a first rail and a second rail that are installed parallel to each other on a floor, and that opens and closes an opening through which the vehicle passes,
a first door member provided above the first rail and the second rail;
a second door member provided between the first rail and the second rail in the width direction of the travel route;
A lower surface of the first door member is in contact with an upper surface of each of the first rail and the second rail, and a portion of the opening above the first rail and the second rail is provided. can be lowered to a closed position,
The second door member has a standing posture in which the second door member enters the running locus of the vehicle, and a posture in which the second door member is tilted more than the standing posture. It is configured so that the posture can be switched between a tilting posture in which the member is retracted from the running locus ,
The side on which the first rail is arranged with respect to the second rail in the width direction is defined as a first side, and the side opposite to the first side in the width direction is defined as a second side. a third door member provided at the end of the first side; and a fourth door member provided at the end of the second door member on the second side,
The third door member has a first protruding position where the third door member protrudes toward the first side with respect to the second door member, and a first retracted position on the second side of the first protruding position. supported by the second door member so as to be movable in the width direction between
The fourth door member has a second protruding position where the fourth door member protrudes toward the second side with respect to the second door member, and a second retracted position on the first side of the second protruding position. supported by the second door member so as to be movable in the width direction between
the first projecting position is a position where the third door member contacts the first rail from the second side in a state where the posture of the second door member is switched to the standing posture;
The second protruding position is a position where the fourth door member contacts the second rail from the first side in a state where the posture of the second door member is switched to the standing posture . fire door. an interlocking mechanism for interlocking a change in posture of the second door member, a movement of the third door member in the width direction, and a movement of the fourth door member in the width direction;
The interlocking mechanism changes the posture of the second door member from the tilted posture to the standing posture, moves the third door member from the first retracted position to the first projected position, and moves the fourth door member from the first retracted position to the first projected position. While interlocking the movement of the member from the second retracted position to the second protruding position, the posture change of the second door member from the upright posture to the tilted posture and the first door member of the third door member. 2. The device according to claim 1 , wherein the movement of said fourth door member from said second projecting position to said second retracted position is interlocked with the movement of said fourth door member from said projecting position to said first retracted position. fire door. A fire door that is provided on a travel route of a vehicle that travels while being guided by a first rail and a second rail that are installed parallel to each other on a floor, and that opens and closes an opening through which the vehicle passes,
a first door member provided above the first rail and the second rail;
a second door member provided between the first rail and the second rail in the width direction of the travel route;
A lower surface of the first door member is in contact with an upper surface of each of the first rail and the second rail, and a portion of the opening above the first rail and the second rail is provided. can be lowered to a closed position,
The second door member has a standing posture in which the second door member enters the running locus of the vehicle, and a posture in which the second door member is tilted more than the standing posture. It is configured so that the posture can be switched between a tilting posture in which the member is retracted from the running locus ,
a fifth door member provided on the first side with respect to the first rail and a sixth door member provided on the second side with respect to the second rail;
The fifth door member has a third protruding position where the fifth door member protrudes toward the second side with respect to a first fixing member fixed to the floor, and a position where the fifth door member protrudes toward the second side from the third protruding position. supported by the first fixing member so as to be movable in the width direction between a third retracted position on the side;
The sixth door member has a fourth protruding position where the sixth door member protrudes toward the first side with respect to a second fixing member fixed to the floor, and a second position where the sixth door member protrudes toward the first side from the fourth protruding position. supported by the second fixing member so as to be movable in the width direction between the fourth retracted position on the side;
the third protruding position is a position where the fifth door member contacts the first rail from the first side;
A said 4th protrusion position is a fire door which is a position where a said 6th door member contacts a said 2nd rail from the said 2nd side . A fire door that is provided on a travel route of a vehicle that travels while being guided by a first rail and a second rail that are installed parallel to each other on a floor, and that opens and closes an opening through which the vehicle passes,
a first door member provided above the first rail and the second rail;
a second door member provided between the first rail and the second rail in the width direction of the travel route;
A lower surface of the first door member is in contact with an upper surface of each of the first rail and the second rail, and a portion of the opening above the first rail and the second rail is provided. can be lowered to a closed position,
The second door member has a standing posture in which the second door member enters the running locus of the vehicle, and a posture in which the second door member is tilted more than the standing posture. It is configured so that the posture can be switched between a tilting posture in which the member is retracted from the running locus ,
an urging device for urging the second door member toward the standing posture, and holding the second door member in the tilted posture against the urging force of the urging device in a power supply state in which electric power is supplied. a retaining device for
When the power supply to the holding device is stopped, the holding by the holding device is released, and the posture of the second door member is switched from the tilted posture to the standing posture by the biasing force of the biasing device. fire door. The biasing device biases the second door member toward the standing posture by an elastic force of an elastic body,
5. The fire door according to claim 4 , wherein the holding device holds the second door member in the tilted posture using a magnetic force generated in the power supply state. a transmission mechanism that interlocks rotation of a winding body with change in the posture of the second door member using a transmission member wound around the winding body; and an electric motor that rotationally drives the winding body. ,
The transmission mechanism interlocks the rotation of the wound body in the direction in which the transmission member is wound up with the change in posture of the second door member toward the tilted posture side, and the winding in the direction in which the transmission member is extended. configured to interlock the rotation of the rotating body with the change in posture of the second door member toward the standing posture,
6. The fire door of claim 5 , wherein the retaining device is configured to lock rotation of the electric motor using magnetic forces generated in the powered state. The second door member is configured to switch between the upright posture and the tilted posture by swinging about a swing axis along the floor and in a direction intersecting the travel route. 7. A fire door according to any one of claims 1 to 6, wherein the fire door is

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