Door gap sealing mechanism

Abstract

To provide a door gap closing mechanism capable of closing at least a part of a gap between a door frame and a door or a gap between a door and a door in a door structure.SOLUTION: In a door structure in which a door 120 can open and close a door opening formed by a door frame, a slide seal member 220 whose longer direction is along a door opposing edge L, which protrudes from the door opposing edge L and can come into contact with a door frame surface M along the longer direction of the door opposing edge L is supported by the door so as to transit between a contact posture coming into contact with the door frame surface M and a separation posture being separated from the door frame surface M by a predetermined separation distance. The slide seal member 220 is energized in a direction moving from the contact posture to the separation posture. When the posture of a rotation link 210 is a first posture, the posture of the slide seal member 220 is brought into the contact posture reversely to the energizing force, and when the posture of the rotation link 210 is a second posture, the posture of the slide seal member 220 is brought into the separation posture.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present invention relates to a door gap closing mechanism that can close at least a portion of the gap between a door frame and a door or between doors in a door structure. [Background technology]

[0002] In door structures, it is sometimes desirable to close at least a portion of the gap between the door frame and the door. For example, in a door structure where a door closes and opens a door opening surrounded by a door frame, it may be necessary to close the gap between the bottom of the door and the bottom of the door frame. In a door structure, it is sometimes desirable to close at least a portion of the gap between doors. For example, in a door structure in which a plurality of small doors lined up in a specific direction close and open a door opening surrounded by a door frame, it may be desired to close the gaps between the small doors lined up in a specific direction.

[0003] When a door structure is installed in a structure that houses noise-generating equipment inside, noise leaks out through the opening when the door is opened, and through the gap between the door and the door frame when the door is closed. Sealing the gap between the door and the door frame can reduce the amount of noise that leaks outside when the door is closed. In particular, large gaps tend to form between the underside of the door frame and the bottom of the door, making it difficult to reduce the amount of noise that leaks outside when the door is closed. Furthermore, gaps tend to form between small doors that are lined up in a specific direction, making it difficult to reduce the amount of noise that leaks outside when the small doors are closed.

[0004] In light of these circumstances, the inventors have studied a door gap closing mechanism that can close at least a portion of the gap between the door frame and the door in a door structure. By adopting multiple door gap sealing mechanisms, it is expected that the level of noise that leaks when a door installed in a door structure installed in a structure that houses equipment that generates noise inside is closed can be reduced. Summary of the Invention [Problem to be solved by the invention]

[0005] The present invention aims to provide a door gap closing mechanism that can close at least a part of the gap between a door frame and a door in a door structure. The present invention also aims to provide a door gap closing mechanism that can close at least a portion of the gap between small doors in a door structure. [Means for solving the problem]

[0006] In order to achieve the above object, the door gap closing mechanism of the present invention is provided in a door structure having a door frame, which is a frame structure surrounding a door opening, and one or more doors, which are structured to be able to open and close the door opening, and which can close at least a part of the gap between the door frame and the door, and in which, when viewed from the front, an upward surface forming one of the lower sides of a plurality of sides forming the outline of the door frame is called the door frame surface, and when the door closes the door opening, an edge of a plurality of edges forming the outline of the door that faces the door frame surface is called the door facing edge, the door gap closing mechanism comprises: a rotary link provided on the door that can rotate and change its position between a first position and a second position; and a slider that is an elongated member whose longitudinal direction is aligned with the door facing edge and that protrudes from the door facing edge to form a sealing surface that can abut against the door frame surface along the longitudinal direction of the door facing edge. The sliding seal member is provided with: a sliding seal member support mechanism that supports the sliding seal member on the door so that its position can be transitioned between an abutting position in which the seal surface abuts against the door frame surface and a spaced position in which a predetermined distance is maintained between the seal surface and the door frame surface; a biasing mechanism that applies a biasing force to the sliding seal member in a direction that moves its position from the abutting position to the gap position; and a link mechanism that is linked to the rotation of the rotating link and that changes the position of the sliding seal member to the abutting position against the biasing force when the position of the rotating link is a first position, and changes the position of the sliding seal member to the spaced position when the position of the rotating link is a second position.

[0007] In the above-described configuration of the present invention, the upward-facing surface that forms one of the lower sides of the multiple sides that form the outline of the door frame when viewed from the front is referred to as the door frame surface. Of the multiple edges that form the outline of the door when the door is closed, the edge that faces the door frame surface is referred to as the door facing edge. The door is provided with a pivoting link, a sliding seal member, a sliding seal member support mechanism, and a link mechanism. The pivoting link can pivot to change its position between a first position and a second position. The sliding seal member is an elongated member whose longitudinal direction is aligned with the door facing edge, protruding from the door facing edge to form a sealing surface that can abut against the door frame surface along the longitudinal direction of the door facing edge. The sliding seal member support mechanism supports the sliding seal member on the door so that its position can be transitioned between an abutting position in which the sealing surface abuts against the door frame surface and a separated position in which the sealing surface and the door frame surface are separated by a predetermined distance. The biasing mechanism applies a biasing force to the slide seal member in a direction that biases the slide seal member to change its position from the abutting position to the gap position. The link mechanism is a link that is linked to the rotation of the pivot link, and when the pivot link is in a first position, the link mechanism changes the position of the slide seal member to the abutting position against the biasing force, and when the pivot link is in a second position, the link mechanism changes the position of the slide seal member to the separated position. As a result, the sliding seal member can close at least a portion of the gap between the door frame and the door.

[0008] In order to achieve the above object, a door gap closing mechanism is provided in a door structure having a door frame that is a frame structure surrounding a door opening that is an opening, and a plurality of small doors that are doors that are structured to be able to open and close the door opening and are arranged in series in a specific direction, and that can close at least a part of the gap between the small doors. When the surface of one of a pair of edges that are separated along a specific direction and perpendicular to a specific direction among a plurality of edges that form the outline of a quadrangle of a specific small door that is a specific small door out of a plurality of small doors when viewed from the front is called a specific small door surface, and when the surface of one of a pair of edges that are separated along a specific direction and perpendicular to a specific direction among a plurality of edges that form the outline of a quadrangle of another small door that is adjacent to the specific small door surface among a plurality of small doors is called an opposing small door edge, the present invention provides a rotary link that is provided on the small door adjacent to the specific small door surface and can rotate to change its position between a first position and a second position, a sliding seal member that is an elongated member whose longitudinal direction is along the opposing small door edge and that protrudes from the opposing door edge to form a seal surface that can abut against the specific small door surface, and a sliding seal member that can be used to change its position The sliding seal member is provided with a slide seal member support mechanism that supports the sliding seal member on the small door so that the force can be transitioned between an abutting position in which the seal surface abuts against a specific small door surface and a spaced position in which a specified distance is provided between the seal surface and the specific small door surface; a biasing mechanism that applies a biasing force to the sliding seal member in a direction that urges the sliding seal member to move its position from the abutting position to the gap position; and a link mechanism that is linked to the rotation of the rotating link and that changes the position of the sliding seal member to the abutting position against the biasing force when the position of the rotating link is a first position, and changes the position of the sliding seal member to the spaced position when the position of the rotating link is a second position.

[0009] In the above-described configuration of the present invention, the surface of one of a pair of edges that are spaced apart along a specific direction and perpendicular to the specific direction among multiple edges forming the quadrilateral outline of a specific small door that is a specific small door among multiple small doors when viewed from the front is referred to as the "specific small door surface." Of the multiple edges forming the quadrilateral outline of another small door adjacent to the specific small door surface among the multiple small doors, one edge that faces the specific small door surface is referred to as the "small door opposing edge." The small door adjacent to the specific small door surface is provided with a pivot link, a sliding seal member, a slide seal member support mechanism, a biasing mechanism, and a link mechanism. The pivot link can pivot to change its position between a first position and a second position. The sliding seal member is an elongated member whose longitudinal direction is aligned with the opposing small door edge and protrudes from the opposing door edge to form a sealing surface that can abut against the specific small door surface. The slide seal member support mechanism supports the slide seal member on the small door so that its position can be transitioned between an abutting position in which the seal surface abuts against a specific small door surface and a spaced position in which a predetermined distance is maintained between the seal surface and the specific small door surface. The biasing mechanism applies a biasing force to the slide seal member in a direction that biases the slide seal member to move from the abutting position to the gap position. The link mechanism is a link that is linked to the rotation of the pivot link, and when the pivot link is in a first position, the slide seal member is in the abutting position against the biasing force, and when the pivot link is in a second position, the slide seal member is in the spaced position. As a result, the sliding seal member can close at least a part of the gap between the small doors.

[0010] The door gap closing mechanism according to the embodiment of the present invention will be described below. The present invention includes any of the embodiments described below, or a combination of two or more of them.

[0011] A door gap sealing mechanism according to an embodiment of the present invention has a single-leaf door structure in which, when viewed from the front of the door opening, one door rotates around a rotation center axis that approximately coincides with one of the left and right sides of the door frame to open and close the door opening, and is equipped with a hinged door sealing mechanism that seals the gap between the edge of the door and the side of the door frame, excluding the gap between the opposing edge of the door and the door frame surface, when the door closes the door opening, and a lower hinged door sealing member that is a sealing member that is provided on the door frame and can abut against the end face or side of the slide seal member at a position opposite the end of the slide seal member when the door closes the door opening and the slide seal member is in an abutting position. In the configuration of the above embodiment, the door structure has a swing door structure in which the door rotates around a rotation center axis that approximately coincides with one of the left and right sides of the door frame when viewed from the front of the door opening to open and close the door opening. The swing door seal mechanism seals the gap between the edge of the door and the side of the door frame, excluding the gap between the opposing edge of the door and the door frame surface, when the door closes the door opening. The swing door lower seal is provided on the door frame and can abut against the end face or side of the slide seal member at a position facing the end of the slide seal member when the door closes the door opening and the slide seal member is in the abutting position. As a result, at least a portion of the gap between the door frame and the door in a hinged door structure can be closed.

[0012] The door gap closing mechanism according to an embodiment of the present invention has a double door structure in which, when the door opening is viewed from the front, two doors can rotate about rotational centers that approximately coincide with the left and right sides of the door frame to open and close the door opening, and when the doors are viewed from the front, an edge facing the other door among multiple edges that form the outline of one of the two doors is called a specific door edge, the door gap closing mechanism includes a swing door sealing mechanism that seals the gap between the edges of the doors and the sides of the door frame, excluding the gap between the opposing edges of the doors and the door frame surface, when the two doors close the door opening, and a seal mechanism that is provided on the specific door edge and seals the gap between the specific door edge and the other door when the two doors close the door opening. The hinged door intermediate seal mechanism seals the gap between a fixed door edge and the opposite edge; a lower hinged door seal that is a seal that is attached to a door frame and can abut against an end face or side face of a sliding seal member at a position facing the end of the sliding seal member when the two doors close the door opening and the sliding seal member is in an abutting position; and an intermediate hinged door seal that is attached to a specific door and can abut against an end face or side face of the sliding seal member at a position facing the end of the sliding seal member when the two doors close the door opening and the sliding seal member is in an abutting position. In the configuration of the above embodiment, the door structure has a double-door structure in which, when viewed from the front of the door opening, two doors can rotate about rotational axes that approximately coincide with the left and right edges of the door frame to open and close the door opening. Among the multiple edges that form the outline of one of the two doors when viewed from the front, the edge facing the other door is referred to as the "specific door edge." The hinged door seal mechanism seals the gap between the edge of the door and the edge of the door frame, excluding the gap between the opposing door edge and the door frame surface, when the two doors close the door opening. The hinged door middle seal mechanism is provided on the specific door edge and seals the gap between the specific door edge and the edge of the other door facing the specific door edge when the two doors close the door opening. The hinged door lower seal member is provided on the door frame and can abut against the end face or side of the slide seal member at a position facing the end of the slide seal member when the two doors close the door opening and the slide seal member is in an abutting position. An intermediate seal for hinged doors is provided on a specific door, and when the two doors close the door opening and the sliding seal member is in an abutting position, it can abut against the end face or side face of the sliding seal member at a position opposite the end of the sliding seal member. As a result, at least a portion of the gap between the door frame and the two doors of the double door structure can be closed.

[0013] The door gap sealing mechanism according to an embodiment of the present invention has a single sliding door structure in which, when viewed from the front of the door opening, one door can move back and forth along the upper edge of the door frame to open and close the door opening, and is equipped with a sliding door sealing mechanism that seals the gap between the edge of the door and the edge of the door frame when the door closes the door opening, excluding the gap between the opposing edge of the door and the door frame surface, and a lower sealing member for the sliding door that is a sealing member that is provided on the door frame and can abut against the end face or side of the sliding seal member at a position opposite the end of the sliding seal member when the door closes the door opening and the sliding seal member is in an abutting position. In the configuration of the above embodiment, the door structure has a sliding door structure in which, when viewed from the front of the door opening, the door moves back and forth along the upper edge of the door frame to open and close the door opening. The sliding door sealing mechanism seals the gap between the edge of the door and the edge of the door frame, excluding the gap between the opposing edge of the door and the door frame surface, when the door closes the door opening. The sliding door lower seal is provided on the door frame and can abut against the end face or side of the sliding seal member at a position facing the end of the sliding seal member when the door closes the door opening and the sliding seal member is in an abutting position. As a result, at least a portion of the gap between the door frame and the door of the sliding door structure can be closed.

[0014] In the door gap closing mechanism according to an embodiment of the present invention, the door structure has a double sliding door structure in which, when the door opening is viewed from the front, two doors can move back and forth along the upper edge of the door frame to open and close the door opening, and when the doors are viewed from the front, an edge that faces the other door among multiple edges that form the outline of one of the two doors, is called a specific door edge, the sliding door sealing mechanism seals the gap between the edge of the door and the side of the door frame, excluding the gap between the opposing edge of the door and the door frame surface when the two doors close the door opening, and a sealing mechanism that is provided on the door and seals the gap between the specific edge and the edge that faces the specific edge of the other door when the two doors close the door opening. the sliding door intermediate seal mechanism that seals the gap between the sliding door and the door frame; a lower seal material for the sliding door that is a seal material that is attached to the door frame and can abut against the end face or side face of the sliding seal member at a position facing the end of the sliding seal member when the two doors close the door opening and the sliding seal member is in an abutting position; and an intermediate seal material for the sliding door that is a seal material that is attached to a specific door edge and can abut against the end face or side face of the sliding seal member at a position facing the end of the sliding seal member when the two doors close the door opening and the sliding seal member is in an abutting position. In the configuration of the above embodiment, the door structure has a double sliding door structure in which, when viewed from the front of the door opening, two doors reciprocate along the upper edge of the door frame to open and close the door opening. Among the multiple edges that form the outline of one of the two doors when viewed from the front, the edge facing the other door is referred to as the "specific door edge." The sliding door seal mechanism seals the gap between the edge of the door and the edge of the door frame, excluding the gap between the opposing door edge and the door frame surface, when the two doors close the door opening. The sliding door middle seal mechanism is provided on the door and seals the gap between the specific edge and the edge of the other door that faces the specific edge when the two doors close the door opening. The sliding door lower seal member is provided on the door frame and can abut against the end face or side of the sliding seal member at a position facing the end of the sliding seal member when the two doors close the door opening and the sliding seal member is in an abutting position. An intermediate seal material for a sliding door is provided on a specific door edge, and when the two doors close the door opening and the sliding seal member is in an abutting position, it can abut against the end face or side face of the sliding seal member at a position opposite the end of the sliding seal member. As a result, at least a portion of the gap between the door frame and the two doors of the double sliding door structure can be closed.

[0015] In the door gap sealing mechanism according to an embodiment of the present invention, the door structure has a swing door structure in which, when viewed from the front of the door opening, the small door rotates around a rotation center axis that approximately coincides with one of the two sides of the door frame extending in a specific direction to open and close the door opening, and is equipped with a sealing mechanism for swing small doors that seals the gap between the edge of the small door and the side of the door frame, excluding the gap between the opposing edge of the small door, the surface of the specific small door, and the door frame when the small door closes the door opening, and a lower sealing material for swing small doors that is a sealing material that is provided on the door frame or the specific small door and can abut against the end face or side of the sliding seal member at a position opposite the end of the sliding seal member when the small door closes the door opening and the sliding seal member is in an abutting position. In the configuration of the above embodiment, the door structure has a hinged door structure in which, when viewed from the front of the door opening, the small door rotates around a rotation center axis that approximately coincides with one of two sides of the door frame extending in a specific direction to open and close the door opening. The sealing mechanism for the hinged small door seals the gap between the edge of the small door and the side of the door frame when the small door closes the door opening, excluding the gap between the opposing edge of the small door, the specific small door surface, and the door frame. The lower sealing member for the hinged small door is provided on the door frame or the specific small door, and can abut against the end face or side of the sliding seal member at a position facing the end of the sliding seal member when the small door closes the door opening and the sliding seal member is in an abutting position. As a result, at least a portion of the gaps between the small doors of a hinged door structure in which multiple small doors are lined up in a specific direction can be blocked.

[0016] In the door gap sealing mechanism according to an embodiment of the present invention, the door structure has a sliding door structure in which, when viewed from the front of the door opening, the small door can move back and forth along an edge of the door frame perpendicular to a specific direction to open and close the door opening, and is equipped with a sealing mechanism for the sliding small door that seals the gap between the edge of the small door and the edge of the door frame, excluding the gap sandwiched between the opposing edge of the small door, the specific small door surface, and the door frame when the small door closes the door opening, and a lower sealing material for the sliding small door that is a sealing material that is provided on the door frame or the specific small door and can abut against the end face or side of the sliding seal member at a position opposite the end of the sliding seal member when the small door closes the door opening and the sliding seal member is in an abutting position. In the configuration of the above embodiment, the door structure has a sliding door structure in which, when viewed from the front of the door opening, the small door moves back and forth along an edge of the door frame perpendicular to a specific direction to open and close the door opening. The sealing mechanism for the sliding small door seals the gap between the edge of the small door and the edge of the door frame when the small door closes the door opening, excluding the gap between the opposing edge of the small door, the specific small door surface, and the door frame. The lower sealing material for the sliding small door is provided on the door frame or the specific small door and can abut against the end face or side of the sliding seal member at a position facing the end of the sliding seal member when the small door closes the door opening and the sliding seal member is in an abutting position. As a result, at least a portion of the gaps between the small doors of a sliding door structure in which multiple small doors are lined up can be blocked.

[0017] A door gap closing mechanism according to an embodiment of the present invention has a door structure that rotates with the door closing the door opening, and a lock handle that is a lever that transitions between a locked position where the door is restrained against the door frame and an unlocked position where the door is released from the restraint of the door against the door frame, and the pivot link rotates in conjunction with the rotation of the lock handle so that when the lock handle is in the locked position, the position becomes a first position, and when the lock handle is in the unlocked position, the position becomes a second position. In the configuration of the above embodiment, the lock handle rotates with the door closing the door opening to transition between a locked position in which the door is restrained relative to the door frame and an unlocked position in which the door is released from restraint relative to the door frame. The pivot link rotates in conjunction with the rotation of the lock handle so that when the lock handle is in the locked position, the position becomes the first position, and when the lock handle is in the unlocked position, the position becomes the second position. As a result, when the lock handle is in the locked position, it is possible to close at least a part of the gap between the door and the door frame or the gap between the small doors.

[0018] In the door gap closing mechanism according to an embodiment of the present invention, when the position of the sliding seal member is in the abutting position, the biasing force exerted by the biasing mechanism acts on the lock handle via the link mechanism and the pivot link so as to change its position from the unlocked position to the locked position, and when the position of the sliding seal member is in the separated position, the biasing force exerted by the biasing mechanism acts on the lock handle via the link mechanism and the pivot link so as to change its position from the locked position to the unlocked position. In the configuration of the above embodiment, when the sliding seal member is in the abutting position, the biasing force exerted by the biasing mechanism acts on the lock handle via the link mechanism and the pivot link so as to change its position from the unlocked position to the locked position.When the sliding seal member is in the separated position, the biasing force exerted by the biasing mechanism acts on the lock handle via the link mechanism and the pivot link so as to change its position from the locked position to the unlocked position. As a result, the lock handle is stable in both the locked and unlocked positions.

[0019] In a door gap closing mechanism according to an embodiment of the present invention, the door structure has a protrusion member that transitions between a retracted position in which the door is pushed by the door frame or another door and retracts into the interior of the door when the door opening is closed, and a protrusion position in which the protrusion protrudes from the door when the door opening is not closed, and the pivot link rotates in conjunction with the change in position of the protrusion member so that when the protrusion member is in the retracted position, the position becomes a first position, and when the protrusion member is in the protruding position, the position becomes a second position. In the configuration of the above embodiment, the protruding member transitions between a retracted position where it is pushed by the door frame or another door and retracted into the door when the door opening is closed by the door, and a protruding position where it protrudes from the door when the door opening is not closed by the door. The pivot link pivots in conjunction with the change in position of the protruding member so that when the protruding member is in the retracted position, the position becomes the first position, and when the protruding member is in the protruding position, the position becomes the second position. As a result, at least a part of the gap between the door frame and the door or the gap between the small doors can be blocked.

[0020] In the door gap closing mechanism according to the embodiment of the present invention, the biasing force exerted by the biasing mechanism acts on the protruding member via the link mechanism and the pivot link so as to change its position from the retracted position to the protruding position. In the configuration of the above embodiment, the biasing force exerted by the biasing mechanism acts on the protruding member via the link mechanism and the rotary link so as to change the position of the protruding member from the retracted position to the protruding position. As a result, the protruding position of the protruding member is stabilized.

[0021] In a door gap closing mechanism according to an embodiment of the present invention, the slide seal member support mechanism has a plurality of pressure pins, one end of which is fixed to the slide seal member, and a plurality of guide pipes that guide the plurality of pressure pins so that they can move freely in a direction perpendicular to the door frame surface, the biasing mechanism is a spring element that applies a biasing force to the pressure pins in a direction away from the door frame surface, and the link mechanism has a plurality of pressure links, one end of which is connected to a pivot part that rotates around the pivot center by the rotation of the pivot link, and the other end of which is connected to each of the plurality of pressure pins. In the configuration of the above embodiment, the slide seal member support mechanism includes a plurality of pressure pins whose one ends are fixed to the slide seal member and a plurality of guide pipes that guide the plurality of pressure pins so that they can move freely in a direction perpendicular to the door frame surface. The biasing mechanism is a spring element that applies a biasing force to the pressure pins in a direction away from the door frame surface. The link mechanism includes a plurality of pressure links whose one ends are connected to a rotating part that rotates around a rotation center when the rotating link rotates and whose other ends are connected to the plurality of pressure pins. As a result, when the rotating link is rotated, the sliding seal member can be moved against the biasing force via the pressure link.

[0022] In a door gap closing mechanism according to an embodiment of the present invention, a slide seal member support mechanism has a plurality of pressure pins, one end of which is fixed to the slide seal member, and a plurality of guide pipes that guide the plurality of pressure pins so that they can move freely in a direction perpendicular to the door frame surface, a biasing mechanism is a spring element that applies a biasing force to the pressure pins in a direction away from the door frame surface, and the link mechanism has connecting links that are connected at one end and the other end to the plurality of pressure pins, and a pressure link that is a link that is connected at one end to a pivoting part that pivots around the pivot center by the rotation of the pivoting link, and is connected at the other end to the connecting link. In the configuration of the above embodiment, the slide seal member support mechanism includes a plurality of pressure pins whose one ends are fixed to the slide seal member and a plurality of guide pipes that guide the plurality of pressure pins so that they can move freely in a direction perpendicular to the door frame surface. The biasing mechanism is a spring element that applies a biasing force to the pressure pins in a direction away from the door frame surface. The link mechanism includes connecting links whose one and other ends are connected to the plurality of pressure pins, and a pressure link whose one end is connected to a rotating part that rotates around a rotation center when the rotating link rotates and whose other end is connected to the connecting link. As a result, when the rotating link is rotated, the sliding seal member can be moved against the biasing force via the pressure link.

[0023] A door gap sealing mechanism according to an embodiment of the present invention has a door provided with a plurality of pivot links, a slide seal member support mechanism having a plurality of pressure pins each having one end fixed to the slide seal member and a plurality of guide pipes that guide the plurality of pressure pins so that they can move freely in a direction perpendicular to the door frame surface, a biasing mechanism being a spring element that applies a biasing force to the pressure pins in a direction away from the door frame surface, and the link mechanism having interlocking links that connect one end and the other end to each of the pivot parts that rotate around the pivot center by the rotation of the plurality of pivot links, and a plurality of pressure links that connect one end to each of the pivot parts of the plurality of pivot links and the other ends to each of the plurality of pressure pins. In the configuration of the above embodiment, the slide seal member support mechanism includes a plurality of pressure pins whose one ends are fixed to the slide seal member and a plurality of guide pipes that guide the plurality of pressure pins so that they can move freely in a direction perpendicular to the door frame surface. The biasing mechanism is a spring element that applies a biasing force to the pressure pins in a direction away from the door frame surface. The link mechanism includes interlocking links that connect one end and the other end to each of the rotating parts that rotate around the rotation center by the rotation of the plurality of rotating links, and a plurality of pressure links that connect one end to each of the rotating parts of the plurality of rotating links and the other end to each of the plurality of pressure pins. As a result, when the rotating link is rotated, the sliding seal member can be moved against the biasing force via the pressure link.

[0024] In the door gap closing mechanism according to the embodiment of the present invention, the link mechanism has auxiliary links that connect one end and the other end to the plurality of pressure pins, respectively. In the configuration of the above embodiment, the auxiliary link of the link mechanism has one end and the other end connected to each of the plurality of pressing pins. As a result, when the rotating link is rotated, the sliding seal member can be stably moved against the biasing force via the pressure link. [Effects of the Invention]

[0025] As described above, the door gap closing mechanism according to the present invention has the following advantages. In a door structure in which one or more doors can open and close a door opening formed by a door frame, a sliding seal member, whose longitudinal direction is aligned with the opposing door edge and which protrudes from the opposing door edge to form a sealing surface that can abut against the door frame surface along the longitudinal direction of the opposing door edge, is supported on the door so that its posture can be transitioned between an abutting posture in which the sealing surface abuts the door frame surface and a spaced posture in which the sealing surface is spaced a predetermined distance from the door frame surface, and the sliding seal member is biased in a direction to move from the abutting posture to the gap posture, and when the posture of the rotating link is in a first posture, the posture of the sliding seal member is changed to the abutting posture against the biasing force, and when the posture of the rotating link is in a second posture, the posture of the sliding seal member is changed to the spaced posture, so that by rotating the rotating link, at least a portion of the gap between the door frame and the door can be blocked by the sliding seal member. In a door structure in which a plurality of small doors lined up in a specific direction can open and close a door opening surrounded by a door frame, the sliding seal member, whose longitudinal direction is aligned with the small door opposing edge that is the edge of the small door that faces the other small door adjacent to it, protrudes from the small door opposing edge and forms a sealing surface that can abut against a specific small door surface that is the surface of the other small door along the longitudinal direction of the small door opposing edge, is supported on the small door so that the position of the sliding seal member can be transitioned between an abutting position in which the sealing surface abuts against the specific small door surface and a separated position in which the sealing surface is separated from the specific small door surface by a predetermined distance, and the sliding seal member is biased in a direction to move from the abutting position to the gap position, and when the position of the rotating link is in a first position, the position of the sliding seal member is changed to the abutting position against the biasing force, and when the position of the rotating link is in a second position, the position of the sliding seal member is changed to the separated position, so that by rotating the rotating link, at least a portion of the gap between the small doors can be blocked by the sliding seal member. When a door with a hinged door structure closes the door opening and the sliding seal member assumes an abutting position, the gap between the edge of the door and the side of the door frame is sealed, excluding the gap between the opposing edge of the door and the door frame surface, and the lower sealing material for the hinged door provided on the door frame can abut against the end face or side of the sliding seal member at a position opposite the end of the sliding seal member, so that at least a part of the gap between the door and the door frame of the hinged door structure can be blocked. When the two doors of the double-door structure close the door opening and the sliding seal members are in the abutting position, the gaps between the edges of the doors and the sides of the door frame are sealed, excluding the gaps between the opposing edges of the doors and the door frame surface, and the gaps between a specific door edge and the edge of the other door that faces that specific door edge are sealed.The lower hinged door seal material provided on the door frame can abut against the end face or side of the sliding seal member at a position facing the end of the sliding seal member, and the intermediate hinged door seal material provided on the specific door can abut against the end face or side of the sliding seal member at a position facing the end of the sliding seal member, so that at least a portion of the gap between the door frame and the two doors of the double-door structure can be sealed. When the door of the sliding door structure closes the door opening and the sliding seal member assumes the abutting position, the gap between the edge of the door and the side of the door frame is sealed, excluding the gap between the opposing edge of the door and the door frame surface, and the lower hinged door seal material provided on the door frame can abut against the end face or side of the sliding seal member at a position opposite the end of the sliding seal member, so that at least a part of the gap between the door and the door frame of the sliding door structure can be blocked. When the two doors of the double sliding door structure close the door opening and the slide seal member is in the abutting position, the gap between the edge of the door and the side of the door frame is sealed, excluding the gap between the opposing door edge and the door frame surface, and the gap between a specific edge and the edge of the other door that faces the specific edge. The lower seal material for the sliding door attached to the door frame can abut against the end face or side of the slide seal member at a position facing the end of the slide seal member, and the intermediate seal material for the sliding door attached to the specific door edge can abut against the end face or side of the slide seal member at a position facing the end of the slide seal member, so that at least a portion of the gap between the door frame and the two doors of the double sliding door structure can be blocked. When a small door of a swing door structure in which multiple small doors are lined up in a specific direction closes the door opening and the sliding seal member assumes an abutting position, the gap between the edge of the small door and the side of the door frame is sealed, excluding the gap between the opposing edge of the small door, the surface of the specific small door, and the door frame, and the lower seal material for the swing door provided on the door frame or the specific small door can abut against the end face or side of the sliding seal member at a position opposite the end of the sliding seal member, so that at least a portion of the gap between the small doors of a swing door structure in which multiple small doors are lined up in a specific direction can be blocked. When the small doors of a sliding door structure in which multiple small doors are lined up in a specific direction close the door opening and the sliding seal member assumes an abutting position, the gap between the edge of the small door and the side of the door frame is sealed, excluding the gap between the opposing edge of the small doors, the surface of the specific small door, and the door frame, and the lower sealing material for the sliding small door provided on the door frame or the specific small door can abut against the end face or side of the sliding seal member at a position facing the end of the sliding seal member, so that at least a portion of the gap between the small doors of a sliding door structure in which multiple small doors are lined up can be blocked. The lock handle is rotated in conjunction with the rotation of the lock handle so that when the lock handle is in the locked position, the position becomes the first position, and when the lock handle is in the unlocked position, the position becomes the second position, so that when the lock handle is in the locked position, at least a part of the gap between the door and the door frame or the gap between the small doors can be blocked. When the sliding seal member is in the abutting position, the biasing force of the biasing mechanism acts to change the position of the lock handle from the unlocked position to the locked position, and when the sliding seal member is in the separated position, the biasing force of the biasing mechanism acts to change the position of the lock handle from the locked position to the unlocked position, so that the locked and unlocked positions of the lock handle are stable. The protruding member transitions between a retracted position where it is pushed by the door frame or another door and retracted into the door when the door closes the door opening, and a protruding position where it protrudes from the door when the door does not close the door opening. The pivot link pivots in conjunction with the change in position of the protruding member so that when the protruding member is in the retracted position, the position becomes the first position, and when the protruding member is in the protruding position, the position becomes the second position. The biasing force of the biasing mechanism acts on the protruding member through the link mechanism and the rotary link to change its posture from the retracted posture to the protruding posture, so that the protruding posture of the protruding member is stabilized. A plurality of pressure pins fixed to the slide seal member are movably guided by a guide pipe, a spring element urges the pressure pins away from the door frame surface, and a pressure link is connected to the rotating link and the plurality of pressure pins, so that when the rotating link is rotated, the slide seal member can be moved against the urging force via the pressure link. A plurality of pressure pins fixed to the slide seal member are movably guided by a guide pipe, a spring element urges the pressure pins away from the door frame surface, a connecting link connects the plurality of pressure pins, and the pressure link is connected to the rotating link and the plurality of pressure pins, so that when the rotating link is rotated, the slide seal member can be moved against the urging force via the pressure link. A plurality of pressure pins fixed to the slide seal member are movably guided by a guide pipe, a spring element urges the pressure pins away from the door frame surface, a plurality of rotary links are connected via interlocking links, and a plurality of pressure links are connected to the rotary links and pressure pins, so that when the rotary links are rotated, the slide seal member can be moved against the urging force via the pressure links. A plurality of pressure pins fixed to the slide seal member are movably guided by a guide pipe, a spring element urges the pressure pins away from the door frame surface, a pressure link is connected to the rotating link and the plurality of pressure pins, the plurality of pressure pins are connected via an auxiliary link, and the plurality of pressure links are connected to the rotating link and pressure pins, so that when the rotating link is rotated, the slide seal member can be moved stably against the urging force via the pressure link. [Brief explanation of the drawings]

[0026] [Figure 1] FIG. 2 is a conceptual diagram illustrating the operation of a door gap closing mechanism according to an embodiment of the present invention. [Figure 2] FIG. 2 is a front view of the door gap closing mechanism according to the embodiment of the present invention. [Figure 3] 1 is a first arrow view of a door gap closing mechanism according to an embodiment of the present invention. [Figure 4] FIG. 2 is a second arrow view of the door gap closing mechanism according to the embodiment of the present invention. [Figure 5] FIG. 3 is a third arrow view of the door gap closing mechanism according to an embodiment of the present invention. [Figure 6] FIG. 2 is a partial cross-sectional view of a door gap closing mechanism according to an embodiment of the present invention. [Figure 7] FIG. 2 is a cross-sectional view of a door gap closing mechanism according to an embodiment of the present invention. [Figure 8] FIG. 1 is a conceptual diagram of a door gap closing mechanism according to an embodiment of the present invention. [Figure 9] FIG. 10 is a conceptual diagram of a second door gap closing mechanism according to an embodiment of the present invention. [Figure 10] FIG. 10 is a conceptual diagram of a third door gap closing mechanism according to an embodiment of the present invention. [Figure 11] FIG. 10 is a conceptual diagram of a fourth door gap closing mechanism according to an embodiment of the present invention. [Figure 12] FIG. 5 is a conceptual diagram of a door gap closing mechanism according to an embodiment of the present invention. [Figure 13] 10 is a first explanatory diagram of the action of the biasing force of the door gap closing mechanism according to the embodiment of the present invention. FIG. [Figure 14] FIG. 2 is a second explanatory diagram of the action of the biasing force of the door gap closing mechanism according to the embodiment of the present invention. [Figure 15] 10A and 10B are diagrams illustrating variations of the sliding seal member of the door gap closing mechanism according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0027] Hereinafter, embodiments of the present invention will be described. First, a door gap closing mechanism according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a conceptual diagram of the operation of a door gap closing mechanism according to an embodiment of the present invention. FIG. 2 is a front view of the door gap closing mechanism according to an embodiment of the present invention. FIG. 3 is a first arrow view of the door gap closing mechanism according to an embodiment of the present invention. FIG. 4 is a second arrow view of the door gap closing mechanism according to an embodiment of the present invention. FIG. 5 is a third arrow view of the door gap closing mechanism according to an embodiment of the present invention. FIG. 6 is a partial cross-sectional view of the door gap closing mechanism according to an embodiment of the present invention. FIG. 7 is a cross-sectional view of the door gap closing mechanism according to an embodiment of the present invention.

[0028] The door gap closing mechanisms 200 according to the first and second embodiments will be described below individually. The door gap closing mechanism 200 according to the first embodiment is a mechanism provided in a door structure that has one or more adjacent doors 120 and can swing or slide horizontally to open and close the door opening. The door gap sealing mechanism 200 according to the second embodiment is a mechanism installed in a door structure that has multiple small doors arranged in series in a specific direction, and each small door can move in a direction perpendicular to the specific direction to open and close the door opening. A structure 50, which may for example be provided with a door structure, encloses the noise source.

[0029] First, a door gap closing mechanism according to a first embodiment of the present invention will be described. The door gap closing mechanism 200 according to the first embodiment of the present invention is a mechanism that is provided in a door structure and is capable of closing at least a part of the gap between the door frame 110 and the door. The door structure 100 is a structure having a door frame 110, which is a frame structure surrounding a door opening, and one or more doors, which are structures that can open and close the door opening. The door structure 100 may be a structure having a door frame 110, which is a frame structure surrounding a door opening, and a single door, which is a structure that can open and close the door opening. For example, the door structure 100 may be a structure having a door frame 110, which is a frame structure surrounding a door opening, and a single door, which is a structure that can open and close the door opening. The door structure 100 may be a structure having a door frame 110, which is a frame structure surrounding a door opening, and a plurality of doors, which are structures that can open and close the door opening. For example, the door structure 100 may be a structure having a door frame 110, which is a frame structure surrounding a door opening, and two doors, which are structures that can open and close the door opening. The lower edge of the door frame 110 may be the floor on which the structure 50 is installed.

[0030] For example, the door structure 100 has a single-leaf door structure in which the door can swing around a rotation center axis that approximately coincides with one of the left and right sides of the door frame 110 when viewed from the front of the door opening, thereby opening and closing the door opening. FIG. 2(A) shows a door structure having a single swing door structure.

[0031] For example, the door structure 100 has a double door structure in which, when viewed from the front of the door opening, two doors can swing about rotational centers that approximately coincide with the left and right sides of the door frame 110 to open and close the door opening. FIG. 2(B) shows a door structure with a double door structure.

[0032] For example, the door structure 100 has a single sliding door structure in which, when the door opening is viewed from the front, one door can slide along the upper edge of the door frame 110 to open and close the door opening. Figure 2(C) shows a door structure with a single sliding door structure.

[0033] For example, the door structure 100 has a double sliding door structure in which, when viewed from the front of the door opening, two doors can slide along the upper edge of the door frame 110 to open and close the door opening. Figure 2(D) shows a door structure with double sliding doors.

[0034] The door structure may have a door frame 110, a door 120, and a lock handle 121. The lock handle 121 is a lever that rotates while the door is closing the door opening to transition between a locked position where the door is restrained against the door frame 110 and an unlocked position where the door 120 is released from the restraint of the door 120 against the door frame 110. The lock handle 121 may be rotatably supported on the door.

[0035] The door structure 100 may have a door frame 110 , a door 120 and a protruding member 122 . The protruding member 122 is a member that transitions between a retracted position where it retracts into the door when the door closes the door opening and a protruding position where it protrudes from the door when the door does not close the door opening. For example, the door structure 100 has a protruding member 122 that transitions between a retracted position where the door structure 100 is pushed by the door frame 110 or another door and retracts into the interior of the door when the door closes the door opening, and a protruding position where the door protrudes from the door when the door does not close the door opening. A protruding member 122 may be supported on the door 120 so as to protrude from the edge of the door.

[0036] The door gap closing mechanism 200 according to the first embodiment of the present invention is provided in a door structure having a door frame 110, which is a frame structure surrounding an opening, and one or more doors 120, which are structures that can open and close the door opening, and is a mechanism that can close at least a portion of the gap between the door frame 110 and the door 120, and is provided with a pivot link 210, a sliding seal member 220, a sliding seal member support mechanism 230, a biasing mechanism 240, and a link mechanism 250 on the door.

[0037] Here, for ease of explanation, the surface that forms one of the multiple sides that form the outline of the door frame 110 when viewed from the front will be referred to as the door frame surface M, and the edge that faces the door frame surface M among the multiple edges that form the outline of the door 120 when the door 120 closes the door opening will be referred to as the door opposing edge L. For example, the upward surface that forms one of the lower sides of the multiple sides that form the outline of the door frame 110 when viewed from the front is called the door frame surface M, and the edge that faces the door frame surface M of the multiple edges that form the outline of the door 120 when the door 120 closes the door opening is called the door opposing edge L. For example, the upward surface that forms one of the lower sides of the multiple sides that form the quadrilateral outline of the door frame 110 when viewed from the front is called the door frame surface M, and the edge that faces the door frame surface M of the multiple edges that form the quadrilateral outline of the door 120 when the door 120 closes the door opening is called the door opposing edge L. When the lower edge of the door frame 110 is the floor on which the structure 50 is installed, the door frame surface M is formed by the floor surface.

[0038] The pivot link 210 is a member that can pivot and change its position between a first position and a second position. For example, the pivot link 210 is a member that can pivot about a pivot center and change its position between a first position and a second position. FIG. 7 shows how the pivot link 210 supported by the door 120 can pivot to change its position between a first position and a second position. In FIG. 7, the posture of the rotating link 210 drawn with a solid line is the first posture. In FIG. 7, the posture of the rotating link 210 depicted by the broken line is the second posture. The pivot link 210 swings around the pivot center. When the posture of the rotating link changes between the first posture and the second posture, the rotation point of the rotating link 210 moves on an arc centered on the rotation center.

[0039] The slide seal member 220 is an elongated member whose longitudinal direction is aligned with the door facing edge L, and which forms a seal surface S that can come into contact with the door frame surface M. The sliding seal member 220 may be a long member whose longitudinal direction is aligned with the door-facing edge L, and may protrude from the door-facing edge L to form a seal surface S that can abut against the door frame surface M along the longitudinal direction of the door-facing edge L. 6 and 7 show that the sliding seal member 220 is an elongated member whose longitudinal direction is aligned with the door-facing edge L, and which protrudes downward from the door-facing edge L to form a seal surface S that can abut against the door frame surface M along the longitudinal direction of the door-facing edge L.

[0040] The sliding seal member 220 may be comprised of a sliding seal member base portion 221 and a sliding seal member seal portion 222 . The slide seal member 220 is an elongated member whose longitudinal direction is aligned with the door-facing edge L, and has a support surface at its lower part that supports the seal portion 222 of the slide seal member. The sliding seal member 220 is a long metal member whose longitudinal direction is aligned with the door-facing edge L, and may have a support surface at its lower part that supports the sliding seal member seal part 222. For example, the slide seal member 220 is a channel steel member whose longitudinal direction is aligned with the door-facing edge L, and has a support surface at the bottom that supports the slide seal member seal part 222. The sliding seal member seal portion 222 is an elongated member made of an elastic material, the longitudinal direction of which is aligned with the door facing edge L. The sliding seal member seal portion 222 may have a generally quadrilateral outline when viewed along the longitudinal direction. The sliding seal member seal portion 222 may have a contour that curves downwardly convexly when viewed along the longitudinal direction. The sliding seal member seal portion 222 may have a cavity formed in the center thereof extending in the longitudinal direction when viewed along the longitudinal direction. FIG. 15(A) shows the sliding seal member seal portion 222a, which is a solid member and has a substantially quadrilateral outline when viewed along the longitudinal direction. FIG. 15(B) shows the sliding seal member seal portion 222b, which is a solid member and has a contour that curves downward in a convex shape when viewed along the longitudinal direction. FIG. 15(C) shows a sliding seal member seal portion 222c that has a generally quadrilateral outline when viewed along the longitudinal direction and has a cavity formed in the center extending in the longitudinal direction. FIG. 15(D) shows a sliding seal member seal portion 222d that has a contour that curves convexly downward when viewed along the longitudinal direction and has a cavity formed in the center that extends in the longitudinal direction.

[0041] The slide seal member support mechanism 230 supports the slide seal member 220 on the door 120 so that the slide seal member 220 can transition between the contact position and the separated position. The abutting position is a position in which the seal surface S abuts against the door frame surface M. The separated position is a position in which a predetermined distance is provided between the seal surface S and the door frame surface M. 6 and 7 show how the sliding seal member support mechanism 230 supports the sliding seal member 220 on the door 120 so that the sliding seal member 220 can be shifted between the contact position and the separated position.

[0042] The biasing mechanism 240 is a mechanism that applies a biasing force F to the slide seal member 220 in a direction that causes the slide seal member 220 to move from the abutting posture to the gap posture. FIG. 6 shows how the biasing mechanism 240 applies a biasing force F to the slide seal member 220 in a direction that causes the slide seal member 220 to move from the contact position to the gap position.

[0043] The link mechanism 250 is a link that is linked to the rotation of the pivot link 210, and when the pivot link 210 is in a first position, the slide seal member 220 is in an abutting position against the biasing force F, and when the pivot link 210 is in a second position, the slide seal member 220 is in a separated position. Variations of the link mechanism 250 will be described later.

[0044] The door gap closing mechanism 200 will be described in detail below for each of the four types of door structures.

[0045] First, a first type of door gap closing mechanism according to a first embodiment of the present invention will be described. The first type of door gap sealing mechanism 200 according to the first embodiment is a mechanism provided in a door structure 100 having a single-door structure, and has a pivot link 210, a sliding seal member 220, a sliding seal member support mechanism 230, a biasing mechanism 240, a link mechanism 250, a hinged door seal mechanism 260a, and a hinged door lower seal member 270a. The explanation of the rotating link 210, the sliding seal member 220, the sliding seal member support mechanism 230, the biasing mechanism 240 and the link mechanism 250 is omitted as they are the same as those described above. The hinged door sealing mechanism 260a is a mechanism that seals the gap between the edge of the door 120 and the side of the door frame 110, excluding the gap between the door opposing edge L and the door frame surface M, when the door 120 closes the door opening. For example, the hinged door sealing mechanism 260a is provided in the door frame 110 and has an inner hinged door sealing material which is a sealing material that can abut against the back surface of the door 120 along the edge of the door 120 except for the gap between the door opposing edge L and the door frame surface M when the hinged door 120 closes the door opening. The lower sealing material 270a for the hinged door is provided on the door frame 110 and is a sealing material that can abut against the end face or side of the sliding seal member 220 at a position opposite the end of the sliding seal member 220 when the hinged door 120 closes the door opening and the sliding seal member 220 is in an abutting position. For example, the lower seal material 270a for the hinged door is provided on the door frame 110, and can abut against the end face of the sliding seal member 220 at a position opposite the end of the sliding seal member 220 when the hinged door 120 closes the door opening and the sliding seal member 220 assumes an abutting position. For example, the lower seal material 270a for the hinged door is provided on the door frame 110, and can abut against the side of the sliding seal member 220 at a position opposite the end of the sliding seal member when the hinged door 120 closes the door opening and the sliding seal member 220 assumes an abutting position. For example, the lower seal material 270a for the hinged door is provided on the door frame 110, and can abut against the end face and side of the sliding seal member 220 at a position opposite the end of the sliding seal member 220 when the hinged door 120 closes the door opening and the sliding seal member 220 assumes an abutting position. Figure 3(A) shows that when the hinged door 120 closes the door opening, the sealing mechanism 260a for the hinged door seals the gap between the edge of the door 120 and the side of the door frame 110, excluding the gap between the door opposing edge L and the door frame surface M, and the lower sealing material 270a for the hinged door is provided on the door frame 110 and abuts against the end face and side of the sliding seal member 220 at a position opposite the end of the sliding seal member 220 when the door 120 closes the door opening and the sliding seal member 220 assumes an abutting position. As a result, when one of the swing doors 120 of the single-leaf door structure closes the door opening and the sliding seal member 220 assumes an abutting position, the gap between the edge of the door 120 and the side of the door frame 110 is sealed, excluding the gap between the door opposing edge L and the door frame surface M, and the lower sealing material 270a for the swing door provided on the door frame 110 abuts against the end face and side of the sliding seal member 220 at a position opposite the end of the sliding seal member 220, thereby sealing the gap between the door frame 110 and the door 120.

[0046] Next, a second type of door gap closing mechanism according to the first embodiment of the present invention will be described. The second type of door gap closing mechanism 200 according to the first embodiment is a mechanism provided in a door structure 100 having a double-door structure, and includes a rotary link 210, a slide seal member 220, a slide seal member support mechanism 230, a biasing mechanism 240, a link mechanism 250, a hinged door seal mechanism 260a, a hinged door middle seal mechanism 261a, and a hinged door lower seal member 270a. and an intermediate sealing material 271a for the hinged door. The explanation of the rotating link 210, the sliding seal member 220, the sliding seal member support mechanism 230, the biasing mechanism 240 and the link mechanism 250 is omitted as they are the same as those described above. The hinged door sealing mechanism 260a is a mechanism that seals the gap between the edge of the door 120 and the side of the door frame 110, excluding the gap between the opposing door edge L and the door frame surface M, when two hinged doors 120 close the door opening. For example, the hinged door sealing mechanism 260a is provided in the door frame 110 and has an inner hinged door sealing material, which is a sealing material that can abut against the back surface of the door 120 along the edge of the door 120, excluding the gap between the opposing door edge L and the door frame surface M, when two hinged doors 120 close the door opening. The intermediate sealing mechanism 261a for the hinged door is provided on a specific door edge, and is a mechanism that seals the gap between the specific door edge and the edge of the other door 120 facing the specific door edge when the two hinged doors 120 close the door opening. For example, the intermediate seal mechanism 261a for hinged doors is provided on one of the specific door edge and the edge of another door 120 facing the specific door edge, and has an intermediate seal material 271a for hinged doors, which is a seal material that can abut against the surface formed on the other edge along the specific door edge when the two doors 120 close the door opening. The hinged door lower seal material 270a is provided on the door frame 110 and is a seal material that can abut against the end face or side face of the slide seal member 220 at a position facing the end of the slide seal member 220 when the two hinged doors 120 close the door opening and the slide seal member 220 is in the abutting position. The intermediate sealing material 271a for hinged doors is a sealing material that is provided on a specific door and can abut against the end face or side of the sliding seal member 220 at a position opposite the end of the sliding seal member 220 when the two hinged doors 120 close the door opening and the sliding seal member 220 is in an abutting position. In FIG. 3(B), when two hinged doors 120 close the door opening, the hinged door seal mechanism 260a seals the gap between the edge of the door 120 and the side of the door frame 110, excluding the gap between the door opposing edge L and the door frame surface M, and the hinged door middle seal mechanism 261a is provided on a specific door edge, and when two doors 120 close the door opening, it seals the gap between the specific door edge and the edge of the other door 120 that faces the specific door edge. The hinged door lower seal material 270a is provided on the door frame 110, and when the doors 120 close the door opening, it seals the gap between the specific door edge and the edge of the other door 120 that faces the specific door edge. When the sliding seal member 220 is in the abutting position, it can abut against the end face or side face of the sliding seal member 220 at a position facing the end of the sliding seal member 220, and the intermediate seal member 271a for hinged doors is provided on a specific door, and when the two doors 120 close the door opening and the sliding seal member 220 is in the abutting position, it abuts against the end face or side face of the sliding seal member 220 at a position facing the end of the sliding seal member 220. As a result, when the two hinged doors 120 of the double-door structure close the door opening and the sliding seal member 220 assumes an abutting position, the gap between the edge of the door 120 and the side of the door frame 110 is sealed, excluding the gap between the door opposing edge L and the door frame surface M, and the gap between a specific door edge and the edge of the other door 120 that faces the specific door edge is sealed, and the lower hinged door seal material 270a provided on the door frame 110 abuts against the end face or side of the sliding seal member 220 at a position facing the end of the sliding seal member 220, and the lower hinged door seal material 270a provided on the door frame 110 abuts against the end face and side of the sliding seal member 220 at a position facing the end of the sliding seal member 220, thereby sealing the gap between the door frame 110 and the two doors 120.

[0047] Next, a third type of door gap closing mechanism according to the first embodiment of the present invention will be described. The third type of door gap sealing mechanism 200 according to the first embodiment is a mechanism that is provided in the door structure 100 when it has a single sliding door structure, and is composed of a pivot link 210, a sliding seal member 220, a sliding seal member support mechanism 230, a biasing mechanism 240, a link mechanism 250, a sliding door seal mechanism 260b, and a sliding door lower seal member 270b. The explanation of the rotating link 210, the sliding seal member 220, the sliding seal member support mechanism 230, the biasing mechanism 240 and the link mechanism 250 is omitted as they are the same as those described above. The sliding door sealing mechanism 260b is a mechanism that seals the gap between the edge of the door 120 and the side of the door frame 110, excluding the gap between the door opposing edge L and the door frame surface M, when the door 120 closes the door opening. For example, the sliding door sealing mechanism 260b is provided on the door frame 110 and has a sliding door sealing material which is a sealing material that can separate from / contact the end face or side face of the door 120 along the edge of the door 120 except for the door-facing edge L when the sliding door 120 closes the door opening. The lower sealing material 270b for the sliding door is provided on the door frame 110 and is a sealing material that can abut against the end face or side face of the sliding seal member 220 at a position opposite the end of the sliding seal member 220 when the door 120 closes the door opening and the sliding seal member 220 is in an abutting position. Figure 4(C) shows that when the sliding door 120 closes the door opening, the sealing mechanism 260b for the sliding door seals the gap between the edge of the door 120 and the side of the door frame 110, excluding the gap between the door opposing edge L and the door frame surface M, and the lower sealing material for the sliding door 270b is provided on the door frame 110 and abuts against the end face or side of the sliding seal member 220 at a position opposite the end of the sliding seal member 220 when the door 120 closes the door opening and the sliding seal member 220 assumes an abutting position. As a result, when the door 120 closes the door opening and the sliding seal member 220 assumes an abutting position, the gap between the edge of the door 120 and the side of the door frame 110 is sealed, excluding the gap between the door opposing edge L and the door frame surface M, and the lower sealing material 270b for the sliding door abuts against the end face or side of the sliding seal member 220 at a position opposite the end of the sliding seal member 220, thereby sealing the gap between the door frame 110 and the door 120.

[0048] Next, a fourth type of door gap closing mechanism according to the first embodiment of the present invention will be described. The fourth type of door gap sealing mechanism 200 according to the first embodiment is a mechanism provided in the door structure 100 when it has two sliding door structures, and is composed of a pivot link 210, a sliding seal member 220, a sliding seal member support mechanism 230, a biasing mechanism 240, a link mechanism 250, a sliding door seal mechanism 260b, a sliding door intermediate seal mechanism 261b, a sliding door lower seal material 270b, and a sliding door intermediate seal material 271b. The explanation of the rotating link 210, the sliding seal member 220, the sliding seal member support mechanism 230, the biasing mechanism 240 and the link mechanism 250 is omitted as they are the same as those described above. For ease of explanation, the edge of the multiple edges that form the outline of a specific door, which is one of the two doors 120 when viewed from the front, that faces the other door 120 will be referred to as the specific door edge. The sliding door sealing mechanism 260b is a mechanism that seals the gap between the edge of the door 120 and the side of the door frame 110, excluding the gap between the opposing door edge L and the door frame surface M, when the two sliding doors 120 close the door opening. For example, the sliding door sealing mechanism 260b is provided in the door frame 110 and has a sliding door sealing material that is a sealing material that can separate from / contact the end face or side face of the door 120 along the edges of the door 120 except for the door facing edge L when the two sliding doors 120 close the door opening. The intermediate sealing mechanism 261b for the sliding door is provided on the door 120 and is a mechanism that seals the gap between a specific edge portion and the edge of another door 120 facing the specific edge portion when the two sliding doors 120 close the door opening. For example, the intermediate sealing mechanism 261b for sliding doors has an intermediate sealing material 271b for sliding doors, which is a sealing material that is provided on one of the edges facing the specific edge portion and the specific edge portion of the other door 120 when the two sliding doors 120 close the door opening, and can separate / abut against the surface formed on the other edge. The lower sealing material 270b for the sliding door is provided on the door frame 110 and is a sealing material that can abut against the end face or side of the sliding seal member 220 at a position opposite the end of the sliding seal member 220 when the two sliding doors 120 close the door opening and the sliding seal member 220 is in an abutting position. The intermediate sealing material 271b for the sliding door is provided on a specific door edge and is a sealing material that can abut against the end face or side face of the sliding seal member 220 at a position opposite the end of the sliding seal member 220 when the two sliding doors 120 close the door opening and the sliding seal member 220 is in an abutting position. As a result, when the two sliding doors 120 close the door opening and the sliding seal member 220 assumes an abutting position, the gap between the edge of the door 120 and the side of the door frame 110 is sealed, excluding the gap between the door opposing edge L and the door frame surface M, the intermediate sealing mechanism for sliding doors 261b seals the gap between a specific edge portion and the edge opposing the specific edge portion of the other door 120, the lower sealing material for sliding doors 270b abuts against the end face or side face of the sliding seal member 220 at a position facing the end of the sliding seal member 220 to close the gap between the door frame 110 and the door 120, and the intermediate sealing material for sliding doors 271b abuts against the end face or side face of the sliding seal member 220 at a position facing the end of the sliding seal member 220 to close the gap between the door frame 110 and the door 120.

[0049] Next, a door gap closing mechanism 200 according to a second embodiment of the present invention will be described.

[0050] The door gap closing mechanism 200 according to the second embodiment of the present invention is a mechanism that can close at least a part of the gap between the small doors 120c of the door structure. The door gap closing mechanism 200 according to the second embodiment of the present invention is a mechanism that can close at least a part of the gap between the small doors 120c of the door structure and the gap between the small doors and the door frame. The door structure has a door frame 110, which is a frame structure surrounding the door opening, and a plurality of small doors 120c, which are doors arranged in series in a specific direction and have a structure that can open and close the door opening.

[0051] For example, the door structure has a swing door structure in which, when the door opening is viewed from the front, the small door 120c rotates around a rotation center axis that approximately coincides with one of the two sides of the door frame 110 extending in a specific direction, thereby opening and closing the door opening. FIG. 2(E) shows a door structure with a hinged door structure. FIG. 2(E) shows a structure in which the specified direction coincides with the horizontal direction and the small door 120c rotates and moves vertically to open and close the door opening.

[0052] For example, the door structure has a sliding door structure in which the small door 120d can be moved back and forth along an edge of the door frame 110 perpendicular to a specific direction when viewed from the front of the door opening, thereby opening and closing the door opening. A door structure with a sliding door structure is shown in FIG. 2(F). FIG. 2(F) shows a structure in which the specified direction coincides with the horizontal direction and the small door 120d slides vertically to open and close the door opening.

[0053] The door structure may include a door frame 110, a door 120, and a lock handle 121. The lock handle 121 is a lever that rotates while the door opening is closed by the door 120 to transition between a locked position that restrains the door 120 against the door frame 110 and an unlocked position that releases the restraint of the door 120 against the door frame 110. A lock handle 121 may be rotatably supported on the door 120 .

[0054] The door structure 100 may include a door frame 110, a door, and a protruding member 122. The protruding member 122 is a member that transitions between a retracted position in which it retracts into the interior of the door 120 when the door 120 closes the door opening, and a protruding position in which it protrudes from the door 120 when the door 120 does not close the door opening. For example, the protruding member 122 is a member that transitions between a retracted position in which it is pushed by either the door frame 110 or another door 120 and retracts into the interior of the door 120 when the door opening is closed by the door 120, and a protruding position in which it protrudes from the door 120 when the door opening is not closed by the door 120. A protruding member 122 may be supported on the door 120 so as to protrude from an edge of the door 120 .

[0055] The door gap sealing mechanism 200 according to the second embodiment of the present invention is provided with a pivot link 210, a sliding seal member 220, a sliding seal member support mechanism 230, a biasing mechanism 240, and a link mechanism 250 on a small door adjacent to a specific small door surface.

[0056] Here, for ease of explanation, the surface of one of a pair of edges that are separated along a specific direction and perpendicular to the specific direction among the multiple edges that form the quadrilateral outline of a specific small door, which is a specific small door 120c among the multiple small doors 120c when viewed from the front, will be referred to as the specific small door surface M, and one edge that faces the specific small door surface among the multiple edges that form the quadrilateral outline of another small door 120c adjacent to the specific small door surface M among the multiple small doors will be referred to as the small door facing edge L.

[0057] The pivot link 210 is a member that is supported by the small door 120c and can pivot to change its position between a first position and a second position. For example, the pivot link 210 is a member that is supported by the small door 120c and can pivot about a pivot center to change its position between a first position and a second position. The pivot link 210 swings around the pivot center. When the posture of the rotating link changes between the first posture and the second posture, the rotation point of the rotating link 210 moves on an arc centered on the rotation center.

[0058] The slide seal member 220 is an elongated member whose longitudinal direction is aligned with the small door facing edge L, and protrudes from the door facing edge L to form a seal surface S that can come into contact with a specific small door surface M. The sliding seal member 220 may be a long member whose longitudinal direction is aligned with the small door facing edge L, and may protrude from the small door facing edge L to form a seal surface S that can abut against the small door surface M along the longitudinal direction of the door facing edge L.

[0059] The sliding seal member 220 may be comprised of a sliding seal member base portion 221 and a sliding seal member seal portion 222 . The slide seal member 220 is an elongated member whose longitudinal direction is aligned with the opposing edge L of the small door, and has a support surface at its lower part that supports the seal portion 222 of the slide seal member. The sliding seal member 220 is a long metal member whose longitudinal direction is aligned with the opposing edge L of the small door, and may have a support surface at the bottom that supports the seal portion 222 of the sliding seal member. For example, the slide seal member 220 is a channel steel member whose longitudinal direction is aligned with the opposing edge L of the small door, and has a support surface at the bottom that supports the seal portion 222 of the slide seal member. The sliding seal member seal portion 222 is an elongated member made of an elastic material, the longitudinal direction of which is aligned with the opposing edge L of the small door. The sliding seal member seal portion 222 may have a generally quadrilateral outline when viewed along the longitudinal direction. The sliding seal member seal portion 222 may have a contour that curves downwardly convexly when viewed along the longitudinal direction. The sliding seal member seal portion 222 may have a cavity formed in the center thereof extending in the longitudinal direction when viewed along the longitudinal direction.

[0060] The slide seal member support mechanism 230 is a mechanism for supporting the slide seal member 220 on the small door 120c so that the slide seal member 220 can be shifted between the contact position and the separated position. The abutting position is a position in which the seal surface S abuts against the specific small door surface M. The separated position is a position in which a predetermined separation distance is provided between the seal surface S and the specific small door surface M along a specific direction.

[0061] The biasing mechanism 240 is a mechanism that applies a biasing force F to the slide seal member 220 in a direction that causes the slide seal member 220 to move from the abutting posture to the gap posture.

[0062] The link mechanism 250 is a link that is linked to the rotation of the pivot link 210, and when the pivot link 210 is in a first position, the slide seal member 220 is in an abutting position against the biasing force, and when the pivot link 210 is in a second position, the slide seal member 220 is in a separated position.

[0063] The door gap closing mechanism 200 according to the second embodiment will be described in detail below for each of the two types of door structures.

[0064] First, a first type of door gap closing mechanism according to a second embodiment of the present invention will be described. The first type of door gap sealing mechanism 200 according to the second embodiment is a mechanism provided in a door structure 100 having a single-door structure, and has a pivot link 210, a sliding seal member 220, a sliding seal member support mechanism 230, a biasing mechanism 240, a link mechanism 250, a seal mechanism for a small swinging door 260c, and a lower seal material for a small swinging door 270c. The explanation of the rotating link 210, the sliding seal member 220, the sliding seal member support mechanism 230, the biasing mechanism 240 and the link mechanism 250 is omitted as they are the same as those described above. The sealing mechanism 260c for a small hinged door is a mechanism that seals the gap between the edge of the small door 120c and the side of the door frame 110, excluding the gap sandwiched between the opposing edge L of the small door, the specific small door surface M, and the door frame 110, when the small hinged door 120c closes the door opening. For example, the sealing mechanism 260c for a small hinged door is provided in the door frame 110 and has an inner sealing material for a hinged door, which is a sealing material that can abut against the back surface of the door along the edge of the door except for the gap between the opposing edge L of the small door and the door frame 110 when the small hinged door 120c closes the door opening. The lower sealing material 270c for the small hinged door is provided on the door frame 110 and is a sealing material that can abut against the end face or side of the sliding seal member 220 at a position opposite the end of the sliding seal member 220 when the small hinged door 120c closes the door opening and the sliding seal member 220 assumes an abutting position. Figure 5(E) shows that when the small swing door 120c closes the door opening, the sealing mechanism 260c for the small swing door seals the gap between the edge of the small door 120c and the side of the door frame 110, excluding the gap between the opposing edge L of the small door, the specific small door surface M, and the door frame 110, and that the lower sealing material 270c for the small swing door is provided on the door frame 110 and can abut against the end face or side of the sliding seal member 220 at a position opposite the end of the sliding seal member 220 when the small swing door 120c closes the door opening and the sliding seal member 220 assumes an abutting position. As a result, when the small door 120c, which is a hinged door, closes the door opening and the sliding seal member 220 assumes an abutting position, the gap between the edge of the small door 120c and the side of the door frame 110 is sealed, excluding the gap sandwiched between the opposing edge L of the small door, the specific small door surface M, and the door frame 110, and the lower seal material 270c for the hinged small door provided on the door frame 110 abuts against the end face or side of the sliding seal member 220 at a position opposite the end of the sliding seal member 220, thereby sealing the gap between the door frame 110 and the small door 120c.

[0065] A second type of door gap closing mechanism according to a second embodiment of the present invention will now be described. The second type of door gap sealing mechanism 200 according to the second embodiment is a mechanism that is provided in the door structure 100 when it has a sliding door structure, and has a pivot link 210, a sliding seal member 220, a sliding seal member support mechanism 230, a biasing mechanism 240, a link mechanism 250, a sealing mechanism for the small sliding door 260d, and a lower sealing material for the small sliding door 270d. Hereinafter, the small sliding door will be referred to as a small sliding door 120d. The explanation of the rotating link 210, the sliding seal member 220, the sliding seal member support mechanism 230, the biasing mechanism 240 and the link mechanism 250 is omitted as they are the same as those described above. The sealing mechanism 260d for the sliding small door is a mechanism that seals the gap between the edge of the sliding small door 120d and the side of the door frame 110, excluding the gap sandwiched between the opposing edge L of the small door, the specific small door surface M, and the door frame 110 when the sliding small door 120d closes the door opening. The sealing mechanism 260d for the small sliding door is provided in the door frame 110, and may have an inner sealing material for the hinged door, which is a sealing material that can abut against the back surface of the door 120 along the edge of the door 120 except for the gap between the opposing edge L of the small door and the door frame 110 when the small sliding door 120d closes the door opening. The lower sealing material 270d for the small sliding door is provided on the door frame 110 and is a sealing material that can abut against the end face or side of the sliding seal member 220 at a position opposite the end of the sliding seal member 220 when the small sliding door 120d closes the door opening and the sliding seal member 220 is in an abutting position. Figure 5(F) shows that when the sliding small door 120d closes the door opening, the sealing mechanism 260d for the sliding small door seals the gap between the edge of the sliding small door 120d and the side of the door frame 110, excluding the gap sandwiched between the opposing edge L of the small door, the specific small door surface M, and the door frame 110, and that the lower sealing material 270d for the sliding small door is provided on the door frame 110 and can abut against the end face or side of the sliding seal member 220 at a position opposite the end of the sliding seal member 220 when the sliding small door 120d closes the door opening and the sliding seal member 220 assumes an abutting position. As a result, when the sliding small door 120d closes the door opening and the sliding seal member 220 assumes an abutting position, the gap between the edge of the sliding small door 120d and the side of the door frame 110 is sealed, excluding the gap sandwiched between the opposing edge L of the small door, the specific small door surface M, and the door frame 110, and the lower seal material 270d for the sliding small door abuts against the end face or side of the sliding seal member 220, thereby sealing the gap between the door frame 110 and the sliding small door 120d.

[0066] The door gap closing mechanism according to the first and second embodiments of the present invention will be described below in the case where the door structure has a lock handle 121.

[0067] The lock handle 121 is a lever that rotates while the door frame 110, the door, and the small door 120c close the door opening, and transitions between a locked position that restrains the small door 120c against the door frame 110, and an unlocked position that releases the restraint of the small door 120c against the door frame 110.

[0068] The rotating link 210 may rotate in conjunction with the rotation of the lock handle 121 so that when the lock handle 121 is in the locked position, the position becomes the first position, and when the lock handle 121 is in the unlocked position, the position becomes the second position.

[0069] When the sliding seal member 220 is in the abutting position, the biasing force F exerted by the biasing mechanism 240 may act on the lock handle 121 via the link mechanism 250 and the rotating link 210 so as to change the position of the lock handle 121 from the unlocked position to the locked position. When the sliding seal member 220 is in the separated position, the biasing force F exerted by the biasing mechanism 240 may act on the lock handle 121 via the link mechanism 250 and the pivot link 210 to change its position from the locked position to the unlocked position. FIG. 13 shows how, when the position of the slide seal member 220 is in the abutting position, the biasing force F exerted by the biasing mechanism 240 acts as a biasing force F1 on the lock handle 121 through the link mechanism 250 and the pivot link 210 to change its position from the unlocked position to the locked position, and how, when the position of the slide seal member 220 is in the separated position, the biasing force F exerted by the biasing mechanism 240 acts as a biasing force F2 on the lock handle 121 through the link mechanism 250 and the pivot link 210 to change its position from the locked position to the unlocked position.

[0070] The door gap closing mechanism according to the first and second embodiments of the present invention will be described below in the case where the door of the door structure has a protruding member 122.

[0071] The protruding member 122 is a member that transitions its posture between a retracted posture in which the door frame 110, the door 120, and the door 120 retract into the interior of the door 120 when the door frame 110 and the door 120 close the door opening, and a protruding posture in which the door 120 protrudes from the door 120 when the door 120 does not close the door opening. For example, the protruding member 122 transitions between a retracted position in which it is pushed by either the door frame 110 or the other door 120 and retracts into the door 120 when the door frame 110 and the door 120 close the door opening, and a protruding position in which it protrudes from the door 120 when the door 120 does not close the door opening.

[0072] The pivot link 210 may rotate in conjunction with the change in the position of the protruding member 122 so that when the position of the protruding member 122 is the retracted position, the position becomes the first position, and when the position of the protruding member 122 is the protruding position, the position becomes the second position.

[0073] The biasing force F exerted by the biasing mechanism 240 may act on the protruding member 122 via the link mechanism 250 and the pivot link 210 so as to change the position of the protruding member 122 from the retracted position to the protruding position. FIG. 14 shows how the biasing force F applied by the biasing mechanism 240 acts as a biasing force F1 on the protruding member 122 via the link mechanism 250 and the pivot link 210 to change the position of the protruding member 122 from the retracted position to the protruding position.

[0074] Five variations of the link mechanism of the door gap closing mechanism according to the first and second embodiments of the present invention will be described below.

[0075] A first variation of the door gap closing mechanism according to the first and second embodiments of the present invention will be described. The slide seal member support mechanism 230 has a plurality of pressing pins 231 whose one ends are fixed to the slide seal member 220, and a plurality of guide pipes 232 that guide the plurality of pressing pins 231 movably in a direction perpendicular to the door frame surface M. The biasing mechanism 240 may be a spring element 241 that applies a biasing force, which is a pushing force, to the pressing pin 231 in a direction away from the door frame surface M. The biasing mechanism 240 may be guided by the guide pipe 232 . The link mechanism 250 has a plurality of pressure links 251, which are links connected at one end to the rotating portion G of the rotating link 210 and at the other end to the plurality of pressure pins 231, respectively. The rotating part G is a part that rotates around the rotation center by the rotation of the rotating link. FIG. 8 illustrates a first variation of the door gap closing mechanism according to the first and second embodiments of the present invention.

[0076] A second variation of the door gap closing mechanism according to the first and second embodiments of the present invention will be described. The slide seal member support mechanism 230 has a plurality of pressing pins 231 whose one ends are fixed to the slide seal member 220, and a plurality of guide pipes 232 that guide the plurality of pressing pins 231 movably in a direction perpendicular to the door frame surface M. The biasing mechanism 240 may be a spring element 241 that applies a biasing force, which is a pushing force, to the pressing pin 231 in a direction away from the door frame surface M. The spring element 241 may be guided by the guide pipe 232 . A spring element 241 may be guided by the pressure pin 231 . The link mechanism 250 has connecting links 252 each connected at one end and the other end to a plurality of pressing pins 231, and a pressing link 251 which is a link connected at one end to the rotating part G of the rotating link 210 and at the other end to the connecting link 252. FIG. 9 illustrates a second variation of the door gap closing mechanism according to the first and second embodiments of the present invention.

[0077] A third variation of the door gap closing mechanism according to the first and second embodiments of the present invention will be described. In the door gap closing mechanism according to the first and second embodiments of the present invention, a plurality of pivot links 210 are provided on the door 120 . The slide seal member support mechanism 230 has a plurality of pressing pins 231 whose one ends are fixed to the slide seal member 220, and a plurality of guide pipes 232 that guide the plurality of pressing pins 231 movably in a direction perpendicular to the door frame surface M. The biasing mechanism 240 may be a spring element 241 that applies a biasing force, which is a pushing force, to the pressing pin 231 in a direction away from the door frame surface M. The spring element 241 may be guided by the guide pipe 232 . A spring element 241 may be guided by the guy rod 231 . The link mechanism 250 has an interlocking link 253, one end and the other end of which are connected to the rotating parts G of the plurality of rotating links 210, respectively, and a plurality of pressing links 251, one end of which is connected to the rotating parts G of the plurality of rotating links 210, respectively, and the other end of which is connected to the plurality of pressing pins 231, respectively. FIG. 10 illustrates a third variation of the door gap closing mechanism according to the first and second embodiments of the present invention.

[0078] A fourth variation of the door gap closing mechanism according to the first and second embodiments of the present invention will be described. In the door gap closing mechanism according to the first and second embodiments of the present invention, the door 120 is provided with a single pivot link 210 . The slide seal member support mechanism 230 has a plurality of pressing pins 231 whose one ends are fixed to the slide seal member 220, and a plurality of guide pipes 232 that guide the plurality of pressing pins 231 movably in a direction perpendicular to the door frame surface M. The biasing mechanism 240 may be a spring element 241 that applies a biasing force, which is a pushing force, to the pressing pin 231 in a direction away from the door frame surface M. The spring element 241 may be guided by the guide pipe 232 . A spring element 241 may be guided by the pressure pin 231 . The link mechanism 250 has a plurality of pressure links 251, which are links connected at one end to the rotating part G of the rotating link 210 and at the other end to each of the plurality of pressure pins 231, and auxiliary links 254, which connect one end and the other end to each of the plurality of pressure pins 231. FIG. 11 illustrates a fourth variation of the door gap closing mechanism according to the first and second embodiments of the present invention.

[0079] A fifth variation of the door gap closing mechanism according to the first and second embodiments of the present invention will be described. In the door gap closing mechanism according to the first and second embodiments of the present invention, a plurality of pivot links 210 are provided on the door 120 . The slide seal member support mechanism 230 has a plurality of pressing pins 231 whose one ends are fixed to the slide seal member 220, and a plurality of guide pipes 232 that guide the plurality of pressing pins 231 movably in a direction perpendicular to the door frame surface M. The biasing mechanism 240 may be a spring element 241 that applies a biasing force, which is a pushing force, to the pressing pin 231 in a direction away from the door frame surface M. The spring element 241 may be guided by the guide pipe 232 . A spring element 241 may be guided by the pressure pin 231 . The link mechanism 250 has an interlocking link 253 which connects one end and the other end to the rotating parts G of the plurality of rotating links 210, a plurality of pressing links 251 which connects one end to the rotating parts of the plurality of rotating links 210, respectively, and the other end to the plurality of pressing pins 231, respectively, and an auxiliary link 254 which connects one end and the other end to the plurality of pressing pins 231, respectively. FIG. 12 illustrates a fifth variation of the door gap closing mechanism according to the first and second embodiments of the present invention.

[0080] As described above, the use of the door gap closing mechanism according to the embodiment of the present invention has the following effects. In a door structure in which one or more doors can open and close a door opening formed by a door frame, a sliding seal member (220) whose longitudinal direction is aligned with the door opposing edge (L) and which protrudes from the door opposing edge (L) to form a sealing surface that can abut against the door frame surface (M) along the longitudinal direction of the door opposing edge is supported on the door (120) so that its posture can be transitioned between an abutting posture in which the sealing surface abuts against the door frame surface (M) and a spaced posture in which the sealing surface is spaced a predetermined distance from the door frame surface (M), and the sliding seal member (220) is biased in a direction in which it moves from the abutting posture to the gap posture, and when the posture of the rotating link (210) is in the first posture, the posture of the sliding seal member (220) is changed to the abutting posture against the biasing force, and when the posture of the rotating link (210) is in the second posture, the posture of the sliding seal member (220) is changed to the spaced posture, so that by rotating the rotating link (210), at least a portion of the gap between the door frame (110) and the door (120) can be blocked by the sliding seal member (220). In a door structure in which a plurality of small doors 120c arranged in a specific direction can open and close a door opening surrounded by a door frame 110, the longitudinal direction of the sliding seal member 220 is aligned with a small door facing edge L, which is an edge of the small door 120c facing the adjacent other small door 120c, and the sliding seal member 220 forms a sealing surface that can abut against a specific small door surface M, which is a surface of the other small door 120c, along the longitudinal direction of the small door facing edge L, and the sliding seal member 220 transitions its position between an abutting position in which the sealing surface abuts against the specific small door surface M and a separating position in which the sealing surface is separated from the specific small door surface M by a predetermined separation distance. The sliding seal member 220 is supported on the small door 120c so that it can be moved, and is biased in a direction to move from the abutting position to the gap position, so that when the position of the rotating link 210 is the first position, the position of the sliding seal member 220 is changed to the abutting position against the biasing force, and when the position of the rotating link 210 is the second position, the position of the sliding seal member 220 is changed to the separated position. Therefore, by rotating the rotating link 210, at least a part of the gap between the small doors 120c can be blocked by the sliding seal member 220. When the door 120 of the hinged door structure closes the door opening and the sliding seal member 220 assumes the abutting position, the gap between the edge of the door 120 and the side of the door frame 110 is sealed, excluding the gap between the door opposing edge L and the door frame surface M, and the lower sealing material for the hinged door provided on the door frame 110 can abut against the end face or side of the sliding seal member 220 at a position facing the end of the sliding seal member 220, so that at least a part of the gap between the door frame 110 of the hinged door structure and the door 120 can be blocked. When the two doors 120 of the double-door structure close the door opening and the sliding seal member 220 is in the abutting position, the gap between the edge of the door 120 and the side of the door frame 110 is sealed, excluding the gap between the door opposing edge L and the door frame surface M, and the gap between a specific door edge and the edge of the other door 120 that faces the specific door edge is sealed, the lower hinged door seal material provided on the door frame 110 can abut against the end face or side of the sliding seal member 220 at a position facing the end of the sliding seal member 220, and the hinged door intermediate seal material 271a provided on the specific door can abut against the end face or side of the sliding seal member 220 at a position facing the end of the sliding seal member 220, so that at least a part of the gap between the door frame 110 of the double-door structure and the two doors 120 can be blocked. When the door 120 of the sliding door structure closes the door opening and the sliding seal member 220 assumes the abutting position, the gap between the edge of the door 120 and the side of the door frame 110 is sealed, excluding the gap between the door opposing edge L and the door frame surface M, and the lower hinged door seal material provided on the door frame 110 is able to abut against the end face or side of the sliding seal member 220 at a position opposite the end of the sliding seal member 220, so that at least a part of the gap between the door frame 110 of the sliding door structure and the door 120 can be blocked. When the two doors 120 of the double sliding door structure close the door opening and the sliding seal member 220 is in the abutting position, the gap between the edge of the door 120 and the side of the door frame 110 is sealed, excluding the gap between the door opposing edge L and the door frame surface M, and the gap between a specific edge portion and the edge of the other door 120 that faces the specific edge portion is sealed, and the lower sealing material 270b for the sliding door attached to the door frame 110 can abut against the end face or side of the sliding seal member 220 at a position facing the end of the sliding seal member 220, and the intermediate sealing material 271b for the sliding door provided on the specific door edge can abut against the end face or side of the sliding seal member 220 at a position facing the end of the sliding seal member 220, so that at least a part of the gap between the door frame 110 and the two doors 120 of the double sliding door structure can be blocked. When the small doors 120d of the hinged door structure in which multiple small doors 120d are lined up in a specific direction close the door opening and the sliding seal member 220 assumes an abutting position, the gap between the edge of the small door 120d and the side of the door frame 110 is sealed, excluding the gap sandwiched between the opposing edge L of the small doors, the specific small door surface M, and the door frame 110, and the lower seal material 270c for the small doors provided on the door frame 110 is able to abut against the end face or side of the sliding seal member 220 at a position opposite the end of the sliding seal member 220, so that at least a portion of the gap between the small doors of the hinged door structure in which multiple small doors 120d are lined up in a specific direction can be blocked. When the small doors 120c of the sliding door structure in which multiple small doors 120c are lined up in a specific direction close the door opening and the sliding seal member 220 assumes an abutting position, the gap between the edge of the small door 120c and the side of the door frame 110 is sealed, excluding the gap sandwiched between the opposing edge L of the small doors, the specific small door surface M, and the door frame 110, and the lower seal material 270d for the hinged sliding small door provided on the door frame 110 can abut against the end face or side of the sliding seal member 220 at a position opposite the end of the sliding seal member 220, so that at least a portion of the gap between the small doors of the sliding door structure in which multiple small doors 120c are lined up can be blocked. The handle 121 is rotated in conjunction with the rotation of the lock handle 121 so that when the lock handle 121 is in the locked position, the position becomes the first position, and when the lock handle 121 is in the unlocked position, the position becomes the second position, so that when the lock handle 121 is in the locked position, at least a part of the gap between the door and the door frame 110 or the gap between the small doors can be blocked. When the position of the slide seal member 220 is in the abutting position, the biasing force of the biasing mechanism 240 acts to change the position of the lock handle 121 from the unlocked position to the locked position, and when the position of the slide seal member 220 is in the separated position, the biasing force of the biasing mechanism acts to change the position of the lock handle 121 from the locked position to the unlocked position, so that the locked and unlocked positions of the lock handle 121 are stable. The rotary link 210 rotates in conjunction with the change in the position of the protruding member 122 so that when the protruding member 122 is in the retracted position, the position becomes the first position, and when the protruding member 122 is in the protruding position, the position becomes the second position, so that when the protruding member 122 is in the retracted position, at least a part of the gap between the door frame 110 and the door 120 or the gap between the small doors can be blocked. The biasing force of the biasing mechanism 240 acts on the protruding member 122 via the link mechanism 250 and the rotary link 210 to change its posture from the retracted posture to the protruding posture, so that the protruding posture of the protruding member can be stabilized. A plurality of pressure pins 231 fixed to the sliding seal member 220 are movably guided by a guide pipe 232, a spring element 241 urges the pressure pins 231 away from the door frame surface M, and a plurality of pressure links 251 are connected to the rotating link 210 and the plurality of pressure pins 231, respectively. Therefore, when the rotating link 210 is rotated, the sliding seal member 220 can be moved against the urging force via the pressure links 251. A plurality of pressure pins 231 fixed to the sliding seal member 220 are movably guided by a guide pipe 232, a spring element 241 urges the pressure pins 231 away from the door frame surface M, a connecting link 252 connects the plurality of pressure pins 231, and the pressure link 251 is connected to the rotating link 210 and the connecting link 252, so that when the rotating link 210 is rotated, the sliding seal member 220 can be moved against the urging force via the pressure link 251. A plurality of pressure pins 231 fixed to the slide seal member 220 are guided movably by a guide pipe 232, a spring element 241 urges the pressure pins 231 away from the door frame surface M, a plurality of pivot links 210 are connected via interlocking links 253, and a plurality of pressure links 251 are connected to the plurality of pivot links 210 and pressure pins 231, respectively. Therefore, when the pivot link 210 is rotated, the slide seal member 220 can be moved against the urging force via the pressure links 251. A plurality of pressure pins 231 fixed to the sliding seal member 220 are movably guided by a guide pipe 232, a spring element 241 urges the pressure pins 231 away from the door frame surface M, the plurality of pressure pins 231 are connected via an auxiliary link 254, and a plurality of pressure links 251 are connected to the rotating link 210 and the plurality of pressure pins 231, respectively. Therefore, when the rotating link 210 is rotated, the sliding seal member 220 can be moved against the urging force via the pressure link 251. A plurality of pressure pins 231 fixed to the slide seal member 220 are guided movably by a guide pipe 232, a spring element 241 urges the pressure pins 231 away from the door frame surface M, the plurality of pressure pins 231 are connected via an auxiliary link 254, the plurality of pivot links 210 are connected via an interlocking link 253, and the plurality of pressure links 251 are connected to the plurality of pivot links 210 and pressure pins 231, respectively. Therefore, when the pivot link 210 is rotated, the slide seal member 220 can be moved stably against the urging force via the pressure link 251.

[0081] The present invention is not limited to the above-described embodiment, and various modifications are possible without departing from the gist of the invention. [Explanation of symbols]

[0082] S sealing surface F biasing force F1 biasing force F2 biasing force G Rotating part M Door frame surface, specific small door surface L door facing edge, small door facing edge 50 structures 100 Door structure 110 Door Frame 120 Doors 120a Swing door 120b sliding door 120c small door 120d small sliding door 121 Lock Handle 122 Protruding member 200 Door gap sealing mechanism 210 Rotating link 220 Slide seal member 221 Slide seal member base 222 Slide seal member seal part 222a Slide seal member seal part 222b Slide seal member seal part 222c Slide seal member seal part 222d Slide seal member seal part 230 Slide seal member support mechanism 231 Pressing pin 232 Guide Pipe 240 Biasing mechanism 241 Spring Elements 250 Link mechanism 251 Pressurized Link 252 Links 253 Related Links 254 Auxiliary Links 260a Swing door seal mechanism 261a Intermediate seal mechanism for swing door 260b Sealing mechanism for sliding doors 261b Intermediate seal mechanism for sliding doors 260c Small swing door seal mechanism 260d Small sliding door seal mechanism 270a Bottom seal for hinged doors 271a Intermediate seal material for hinged doors 270b Bottom seal for sliding doors 271b Intermediate seal material for sliding doors 270c Bottom seal for small swing doors 270d Bottom seal for small sliding doors [Prior art documents] [Patent documents]

[0083] [Patent Document 1] Patent Publication No. 2021-067011 [Patent Document 2] Patent Publication No. 2016-075067 [Patent Document 3] Patent Publication No. 2012-140773

Claims

1. A door gap closing mechanism that is provided in a door structure having a door frame, which is a frame structure surrounding a door opening, and one or more doors, which are structures that can open and close the door opening, and that can close at least a part of the gap between the door frame and the door, The door structure has a single-leaf door structure in which, when viewed from the front of the door opening, one door rotates around a rotation center axis that approximately coincides with one of the left and right sides of the door frame to open and close the door opening, The door frame is a flat surface that faces upward and forms one of the lower sides of the door frame when viewed from the front. ... Installed on the door, a pivot link that can pivot to change its position between a first position and a second position; a sliding seal member that is an elongated member whose longitudinal direction is aligned with the door facing edge and that protrudes from the door facing edge to form a seal surface that can abut against the door frame surface along the longitudinal direction of the door facing edge; a slide seal member support mechanism that supports the slide seal member on the door so that its position can be transitioned between an abutting position in which the seal surface abuts against the door frame surface and a spaced position in which a predetermined distance is maintained between the seal surface and the door frame surface; and a biasing mechanism that applies a biasing force to the slide seal member in a direction that moves the slide seal member from the abutting position to the separated position; a link mechanism that is interlocked with the rotation of the pivot link, and that causes the slide seal member to assume the abutting position against the biasing force when the pivot link is in a first position, and causes the slide seal member to assume the separated position when the pivot link is in a second position; a hinged door sealing mechanism that seals the gap between the edge of the door and the side of the door frame, excluding the gap between the opposing edge of the door and the door frame surface, when the door closes the door opening; a lower seal for a hinged door, which is provided on a door frame and is capable of simultaneously abutting against the end face and side face of the slide seal member at a position facing the end of the slide seal member when the door closes the door opening and the slide seal member is in an abutting position; A door gap closing mechanism comprising:

2. A door gap closing mechanism that is provided in a door structure having a door frame, which is a frame structure surrounding a door opening, and one or more doors, which are structures that can open and close the door opening, and that can close at least a part of the gap between the door frame and the door, The door structure has a double-door structure in which the two doors can rotate about rotational centers that approximately coincide with the left and right sides of the door frame when viewed from the front of the door opening, thereby opening and closing the door opening; The door frame is a flat surface that faces upward and forms one of the lower sides of the door frame when viewed from the front. ... When looking at the door from the front, the edge that faces the other door among the multiple edges that form the outline of the specific door, which is one of the two doors, is called the specific door edge. Installed on the door, a pivot link that can pivot to change its position between a first position and a second position; a sliding seal member that is an elongated member whose longitudinal direction is aligned with the door facing edge and that protrudes from the door facing edge to form a seal surface that can abut against the door frame surface along the longitudinal direction of the door facing edge; a slide seal member support mechanism that supports the slide seal member on the door so that its position can be transitioned between an abutting position in which the seal surface abuts against the door frame surface and a spaced position in which a predetermined distance is maintained between the seal surface and the door frame surface; and a biasing mechanism that applies a biasing force to the slide seal member in a direction that moves the slide seal member from the abutting position to the separated position; a link mechanism that is interlocked with the rotation of the pivot link, and that causes the slide seal member to assume the abutting position against the biasing force when the pivot link is in a first position, and causes the slide seal member to assume the separated position when the pivot link is in a second position; a hinged door sealing mechanism that seals the gap between the edge of the door and the side of the door frame, excluding the gap between the opposing edges of the doors and the door frame surface, when the two doors close the door opening; The door frame is secured to the door frame by a spring, and the door frame is secured to the door frame by a spring. a lower hinged door seal member that is attached to a door frame and that can simultaneously abut against the end face and side face of the slide seal member at a position facing the end of the slide seal member when the two doors close the door opening and the slide seal member is in an abutting position; The hinged door intermediate seal is a seal that is provided on a specific door and that can simultaneously abut against the end face and side face of the slide seal member at a position facing the end of the slide seal member when the two doors close the door opening and the slide seal member is in an abutting position; and A door gap closing mechanism comprising:

3. A door gap closing mechanism that is provided in a door structure having a door frame, which is a frame structure surrounding a door opening, and one or more doors, which are structures that can open and close the door opening, and that can close at least a part of the gap between the door frame and the door, The door structure has a single sliding door structure in which one door can move back and forth along the upper edge of the door frame when looking at the door opening from the front, opening and closing the door opening; The door frame is a flat surface that faces upward and forms one of the lower sides of the door frame when viewed from the front. ... Installed on the door, a pivot link that can pivot to change its position between a first position and a second position; a sliding seal member that is an elongated member whose longitudinal direction is aligned with the door facing edge and that protrudes from the door facing edge to form a seal surface that can abut against the door frame surface along the longitudinal direction of the door facing edge; a slide seal member support mechanism that supports the slide seal member on the door so that its position can be transitioned between an abutting position in which the seal surface abuts against the door frame surface and a spaced position in which a predetermined distance is maintained between the seal surface and the door frame surface; and a biasing mechanism that applies a biasing force to the slide seal member in a direction that moves the slide seal member from the abutting position to the separated position; a link mechanism that is interlocked with the rotation of the pivot link, and that causes the slide seal member to assume the abutting position against the biasing force when the pivot link is in a first position, and causes the slide seal member to assume the separated position when the pivot link is in a second position; a sliding door sealing mechanism that seals the gap between the edge of the door and the side of the door frame, excluding the gap between the opposing edge of the door and the door frame surface, when the door closes the door opening; a lower seal for the sliding door, which is provided on the door frame and is capable of abutting against an end face or a side face of the sliding seal member at a position facing the end of the sliding seal member when the door closes the door opening and the sliding seal member is in an abutting position; A door gap closing mechanism comprising:

4. A door gap closing mechanism that is provided in a door structure having a door frame, which is a frame structure surrounding a door opening, and one or more doors, which are structures that can open and close the door opening, and that can close at least a part of the gap between the door frame and the door, The door structure has a double sliding door structure in which the two doors can move back and forth along the upper edge of the door frame when the door opening is viewed from the front, opening and closing the door opening; The door frame is a flat surface that faces upward and forms one of the lower sides of the door frame when viewed from the front. ... When looking at the door from the front, the edge that faces the other door among the multiple edges that form the outline of the specific door, which is one of the two doors, is called the specific door edge. Installed on the door, a pivot link that can pivot to change its position between a first position and a second position; a sliding seal member that is an elongated member whose longitudinal direction is aligned with the door facing edge and that protrudes from the door facing edge to form a seal surface that can abut against the door frame surface along the longitudinal direction of the door facing edge; a slide seal member support mechanism that supports the slide seal member on the door so that its position can be transitioned between an abutting position in which the seal surface abuts against the door frame surface and a spaced position in which a predetermined distance is maintained between the seal surface and the door frame surface; and a biasing mechanism that applies a biasing force to the slide seal member in a direction that moves the slide seal member from the abutting position to the separated position; a link mechanism that is interlocked with the rotation of the pivot link, and that causes the slide seal member to assume the abutting position against the biasing force when the pivot link is in a first position, and causes the slide seal member to assume the separated position when the pivot link is in a second position; a sliding door sealing mechanism that seals the gap between the edge of the door and the side of the door frame, excluding the gap between the opposing edges of the doors and the door frame surface, when the two doors close the door opening; a sliding door intermediate seal mechanism that is provided on the door and seals a gap between a specific edge portion and an edge of another door facing the specific edge portion when the two doors close the door opening; a lower seal for the sliding door, which is a seal that is provided in the door frame and that can abut against an end face or a side face of the sliding seal member at a position facing the end of the sliding seal member when the two doors close the door opening and the sliding seal member is in an abutting position; a sliding door intermediate seal member that is provided on a specific door edge and that is capable of abutting against an end face or a side face of the sliding seal member at a position facing the end of the sliding seal member when the two doors close the door opening and the sliding seal member is in an abutting position; A door gap closing mechanism comprising:

5. A door gap closing mechanism is provided in a door structure having a door frame, which is a frame structure surrounding a door opening, and a plurality of small doors, which are doors arranged in series in a specific direction and have a structure that can open and close the door opening, and which can close at least a part of the gap between the small doors, When the surface of one edge of a pair of edges that are separated along a specific direction and perpendicular to the specific direction among the multiple edges that form the quadrilateral outline of a specific small door that is a specific small door among multiple small doors when viewed from the front is called a specific small door surface, and when the surface of one edge of a pair of edges that are separated along a specific direction and perpendicular to the specific direction among the multiple edges that form the quadrilateral outline of another small door that is adjacent to the specific small door surface among the multiple small doors is called a small door opposing edge, Provided on a small door adjacent to a specific small door surface, a pivot link that can pivot to change its position between a first position and a second position; a sliding seal member that is an elongated member whose longitudinal direction is along the opposing edge of the small door and that protrudes from the opposing edge of the small door to form a seal surface that can abut against a specific small door surface; a slide seal member support mechanism that supports the slide seal member on the small door so that its position can be transitioned between an abutting position in which the seal surface abuts against a specific small door surface and a separating position in which a predetermined distance is provided between the seal surface and the specific small door surface; and a biasing mechanism that applies a biasing force to the slide seal member in a direction that moves the slide seal member from the abutting position to the separated position; a link mechanism that is interlocked with the rotation of the pivot link, and that causes the slide seal member to assume the abutting position against the biasing force when the pivot link is in a first position, and causes the slide seal member to assume the separated position when the pivot link is in a second position; A door gap closing mechanism comprising:

6. The door structure has a swing door structure in which the small door can rotate around a rotation center axis that is approximately aligned with one of two sides of the door frame extending in a specific direction when viewed from the front of the door opening, thereby opening and closing the door opening; a sealing mechanism for a hinged small door that seals a gap between an edge of the small door and a side of the door frame, excluding a gap sandwiched between an opposing edge of the small door, a specific small door surface, and the door frame when the small door closes the door opening; a lower seal for a hinged small door, which is provided on a door frame or a specific small door and is capable of abutting against an end face or side face of the slide seal member at a position facing the end of the slide seal member when the small door closes the door opening and the slide seal member is in an abutting position; The door gap closing mechanism according to claim 5, further comprising:

7. The door structure has a sliding door structure in which the small door can be moved back and forth along an edge of the door frame perpendicular to a specific direction when viewed from the front of the door opening, thereby opening and closing the door opening; a sealing mechanism for a sliding small door that seals a gap between an edge of the small door and a side of the door frame, excluding a gap sandwiched between an opposing edge of the small door, a specific small door surface, and the door frame when the small door closes the door opening; a lower seal for the sliding small door, which is provided on the door frame or the specific small door and is capable of abutting against the end face or side face of the sliding seal member at a position facing the end of the sliding seal member when the small door closes the door opening and the sliding seal member is in the abutting position; The door gap closing mechanism according to claim 5, further comprising:

8. A door gap closing mechanism that is provided in a door structure having a door frame, which is a frame structure surrounding a door opening, and one or more doors, which are structures that can open and close the door opening, and that can close at least a part of the gap between the door frame and the door, The door structure has a single-leaf door structure in which, when viewed from the front of the door opening, one door rotates around a rotation center axis that approximately coincides with one of the left and right sides of the door frame to open and close the door opening, The door structure has a lock handle which is a lever that rotates while the door is closing the door opening to transition between a locked position in which the door is constrained to the door frame and an unlocked position in which the door is released from the constrained position to the door frame, The door frame is a flat surface that faces upward and forms one of the lower sides of the door frame when viewed from the front. ... Installed on the door, a pivot link that can pivot to change its position between a first position and a second position; a sliding seal member that is an elongated member whose longitudinal direction is aligned with the door facing edge and that protrudes from the door facing edge to form a seal surface that can abut against the door frame surface along the longitudinal direction of the door facing edge; a slide seal member support mechanism that supports the slide seal member on the door so that its position can be transitioned between an abutting position in which the seal surface abuts against the door frame surface and a spaced position in which a predetermined distance is maintained between the seal surface and the door frame surface; and a biasing mechanism that applies a biasing force to the slide seal member in a direction that moves the slide seal member from the abutting position to the separated position; a link mechanism that is interlocked with the rotation of the pivot link, and that causes the slide seal member to assume the abutting position against the biasing force when the pivot link is in a first position, and causes the slide seal member to assume the separated position when the pivot link is in a second position; a hinged door sealing mechanism that seals the gap between the edge of the door and the side of the door frame, excluding the gap between the opposing edge of the door and the door frame surface, when the door closes the door opening; a lower seal for a hinged door, which is provided on a door frame and is capable of abutting against an end face or a side face of the slide seal member at a position facing the end of the slide seal member when the door closes the door opening and the slide seal member is in an abutting position; Equipped with the rotating link rotates in conjunction with the rotation of the lock handle so that when the lock handle is in the locked position, the position becomes a first position, and when the lock handle is in the unlocked position, the position becomes a second position; When the posture of the slide seal member is the abutting posture, the biasing force applied by the biasing mechanism biases the lock handle in a rotational direction either clockwise or counterclockwise through the link mechanism and the rotation link, thereby acting on the lock handle to change its posture from the unlocked posture to the locked posture, When the posture of the slide seal member is the separated posture, the biasing force exerted by the biasing mechanism biases the lock handle in the other of the clockwise and counterclockwise directions through the link mechanism and the rotary link, thereby changing the posture of the lock handle from the locked posture to the unlocked posture. A door gap closing mechanism characterized by the above.

9. The slide seal member support mechanism has a plurality of pressing pins, one end of which is fixed to the slide seal member, and a plurality of guide pipes, which respectively guide the plurality of pressing pins so that they can move in a direction perpendicular to the door frame surface, The biasing mechanism is a spring element that applies a biasing force to the pressing pin in a direction away from the door frame surface, the link mechanism has a plurality of pressure links, each of which has one end connected to a rotating part that rotates around a rotation center by rotation of the rotary link and the other end connected to each of a plurality of pressure pins, The door gap closing mechanism according to claim 8.

10. The slide seal member support mechanism has a plurality of pressing pins, one end of which is fixed to the slide seal member, and a plurality of guide pipes, which respectively guide the plurality of pressing pins so that they can move in a direction perpendicular to the door frame surface; The biasing mechanism is a spring element that applies a biasing force to the pressing pin in a direction away from the door frame surface, The link mechanism has a connecting link having one end and the other end connected to a plurality of pressing pins, and a pressing link having one end connected to a rotating part that rotates around a rotation center by rotation of the rotating link and the other end connected to the connecting link. The door gap closing mechanism according to claim 9.

11. The door is provided with multiple pivot links, The slide seal member support mechanism has a plurality of pressing pins, one end of which is fixed to the slide seal member, and a plurality of guide pipes, which respectively guide the plurality of pressing pins so that they can move in a direction perpendicular to the door frame surface; The biasing mechanism is a spring element that applies a biasing force to the pressing pin in a direction away from the door frame surface, The link mechanism has an interlocking link that connects one end and the other end to a rotating portion that is a portion that rotates around a rotation center by rotation of the plurality of rotating links, and a plurality of pressing links that connect one end to each of the rotating portions of the plurality of rotating links and the other end to each of the plurality of pressing pins, The door gap closing mechanism according to claim 10.

12. The link mechanism has auxiliary links each connecting one end and the other end to a plurality of pressing pins. The door gap closing mechanism according to claim 9 or 11.

13. A door gap closing mechanism that is provided in a door structure having a door frame, which is a frame structure surrounding a door opening, and one or more doors, which are structures that can open and close the door opening, and that can close at least a part of the gap between the door frame and the door, The door frame is a flat surface that faces upward and forms one of the lower sides of the door frame when viewed from the front. ... Installed on the door, a pivot link that can pivot to change its position between a first position and a second position; a sliding seal member that is an elongated member whose longitudinal direction is aligned with the door facing edge and that protrudes from the door facing edge to form a seal surface that can abut against the door frame surface along the longitudinal direction of the door facing edge; a slide seal member support mechanism that supports the slide seal member on the door so that its position can be transitioned between an abutting position in which the seal surface abuts against the door frame surface and a spaced position in which a predetermined distance is maintained between the seal surface and the door frame surface; and a biasing mechanism that applies a biasing force to the slide seal member in a direction that moves the slide seal member from the abutting position to the separated position; a link mechanism that is interlocked with the rotation of the pivot link, and that causes the slide seal member to assume the abutting position against the biasing force when the pivot link is in a first position, and causes the slide seal member to assume the separated position when the pivot link is in a second position; Equipped with The slide seal member support mechanism has a plurality of pressing pins, one end of which is fixed to the slide seal member, and a plurality of guide pipes, which respectively guide the plurality of pressing pins so that they can move in a direction perpendicular to the door frame surface, The biasing mechanism is a spring element that applies a biasing force to the pressing pin in a direction away from the door frame surface, the link mechanism has a plurality of pressure links, each of which has one end connected to a rotating part that rotates around a rotation center by rotation of the rotary link and the other end connected to each of a plurality of pressure pins, A door gap closing mechanism characterized by the above.

14. The slide seal member support mechanism has a plurality of pressing pins, one end of which is fixed to the slide seal member, and a plurality of guide pipes, which respectively guide the plurality of pressing pins so that they can move in a direction perpendicular to the door frame surface, The biasing mechanism is a spring element that applies a biasing force to the pressing pin in a direction away from the door frame surface, the link mechanism has a plurality of pressure links, each of which has one end connected to a rotating part that rotates around a rotation center by rotation of the rotary link and the other end connected to each of a plurality of pressure pins, The door gap closing mechanism according to claim 5, 。

15. A door gap closing mechanism that is provided in a door structure having a door frame, which is a frame structure surrounding a door opening, and one or more doors, which are structures that can open and close the door opening, and that can close at least a part of the gap between the door frame and the door, The door frame is a flat surface that faces upward and forms one of the lower sides of the door frame when viewed from the front. ... Installed on the door, a pivot link that can pivot to change its position between a first position and a second position; a sliding seal member that is an elongated member whose longitudinal direction is aligned with the door facing edge and that protrudes from the door facing edge to form a seal surface that can abut against the door frame surface along the longitudinal direction of the door facing edge; a slide seal member support mechanism that supports the slide seal member on the door so that its position can be transitioned between an abutting position in which the seal surface abuts against the door frame surface and a spaced position in which a predetermined distance is maintained between the seal surface and the door frame surface; and a biasing mechanism that applies a biasing force to the slide seal member in a direction that moves the slide seal member from the abutting position to the separated position; a link mechanism that is interlocked with the rotation of the pivot link, and that causes the slide seal member to assume the abutting position against the biasing force when the pivot link is in a first position, and causes the slide seal member to assume the separated position when the pivot link is in a second position; Equipped with The slide seal member support mechanism has a plurality of pressing pins, one end of which is fixed to the slide seal member, and a plurality of guide pipes, which respectively guide the plurality of pressing pins so that they can move in a direction perpendicular to the door frame surface; The biasing mechanism is a spring element that applies a biasing force to the pressing pin in a direction away from the door frame surface, The link mechanism has a connecting link having one end and the other end connected to a plurality of pressing pins, and a pressing link having one end connected to a rotating part that rotates around a rotation center by rotation of the rotating link and the other end connected to the connecting link, A door gap closing mechanism characterized by the above.

16. The slide seal member support mechanism has a plurality of pressing pins, one end of which is fixed to the slide seal member, and a plurality of guide pipes, which respectively guide the plurality of pressing pins so that they can move in a direction perpendicular to the door frame surface; The biasing mechanism is a spring element that applies a biasing force to the pressing pin in a direction away from the door frame surface, The link mechanism has a connecting link having one end and the other end connected to a plurality of pressing pins, and a pressing link having one end connected to a rotating part that rotates around a rotation center by rotation of the rotating link and the other end connected to the connecting link, The door gap closing mechanism according to claim 5 .

17. A door gap closing mechanism that is provided in a door structure having a door frame, which is a frame structure surrounding a door opening, and one or more doors, which are structures that can open and close the door opening, and that can close at least a part of the gap between the door frame and the door, The door frame is a flat surface that faces upward and forms one of the lower sides of the door frame when viewed from the front. ... Installed on the door, a pivot link that can pivot to change its position between a first position and a second position; a sliding seal member that is an elongated member whose longitudinal direction is aligned with the door facing edge and that protrudes from the door facing edge to form a seal surface that can abut against the door frame surface along the longitudinal direction of the door facing edge; a slide seal member support mechanism that supports the slide seal member on the door so that its position can be transitioned between an abutting position in which the seal surface abuts against the door frame surface and a spaced position in which a predetermined distance is maintained between the seal surface and the door frame surface; and a biasing mechanism that applies a biasing force to the slide seal member in a direction that moves the slide seal member from the abutting position to the separated position; a link mechanism that is interlocked with the rotation of the pivot link, and that causes the slide seal member to assume the abutting position against the biasing force when the pivot link is in a first position, and causes the slide seal member to assume the separated position when the pivot link is in a second position; Equipped with The door is provided with multiple pivot links, The slide seal member support mechanism has a plurality of pressing pins, one end of which is fixed to the slide seal member, and a plurality of guide pipes, which respectively guide the plurality of pressing pins so that they can move in a direction perpendicular to the door frame surface; The biasing mechanism is a spring element that applies a biasing force to the pressing pin in a direction away from the door frame surface, The link mechanism has an interlocking link that connects one end and the other end to a rotating portion that is a portion that rotates around a rotation center by rotation of the plurality of rotating links, and a plurality of pressing links that connect one end to each of the rotating portions of the plurality of rotating links and the other end to each of the plurality of pressing pins, A door gap closing mechanism characterized by the above.

18. The door is provided with multiple pivot links, The slide seal member support mechanism has a plurality of pressing pins, one end of which is fixed to the slide seal member, and a plurality of guide pipes, which respectively guide the plurality of pressing pins so that they can move in a direction perpendicular to the door frame surface; The biasing mechanism is a spring element that applies a biasing force to the pressing pin in a direction away from the door frame surface, The link mechanism has an interlocking link that connects one end and the other end to a rotating portion that is a portion that rotates around a rotation center by rotation of the plurality of rotating links, and a plurality of pressing links that connect one end to each of the rotating portions of the plurality of rotating links and the other end to each of the plurality of pressing pins, The door gap closing mechanism according to claim 5 .

19. 19. A door gap closing mechanism according to claim 13, claim 14, claim 17 or claim 18, characterized in that the link mechanism has auxiliary links each connecting one end and the other end to a plurality of pressure pins.

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