JP2013213358A - Bottom rail member, and sliding door and double sliding window comprising the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bottom rail member capable of easily imparting a ventilation function to a sliding door, and the sliding door and a double sliding window which comprise the same.SOLUTION: A ventilation hole 13 is formed on a side plate portion 21 of a rail body 20 of a bottom rail member 1, and the ventilation hole 13 is opened/closed by an opening/closing portion 15. Thus, a ventilation function can be easily imparted to a sliding door in comparison with such a configuration that a ventilation device is separately attached to the sliding door. In addition, since the bottom rail member 1 is provided with a sash roller attachment portion 26, the ventilation function can be imparted to the sliding door concurrently with replacement of a sash roller 11 by replacing the sash roller together with the bottom rail member 1, for example, when the sash roller 11 is worn out.

Description

  The present invention relates to a lower eaves member provided with a door pulley mounting portion for mounting a door roller rolling on a rail, and a sliding door and a sliding window provided with the same.

  As an example of a sliding door provided with a frame body made of an aluminum sash or the like, a sliding door to which a door roller that rolls on a rail is attached is known. Among these types of sliding doors, in a sliding door for partitioning the room and the outdoors, condensation may occur due to a temperature difference between the room and the outdoors. Therefore, a configuration that can prevent condensation is desired.

  As a configuration for preventing condensation in the sliding door as described above, for example, a configuration using a resin sash has been proposed. However, even if a resin sash is used, there is a limit to the range in which condensation can be prevented, and it is difficult to prevent condensation if the temperature difference between the room and the outdoors is large. Even in such a case where the temperature difference is large, it is effective to perform ventilation between the room and the outdoors in order to reliably prevent condensation.

  In some sliding doors, for example, a small window is formed in the upper part of the sliding door, and ventilation can be performed by opening and closing the small window with a glass plate. However, in a sliding door that does not have such a configuration, ventilation must be performed by opening and closing the sliding door itself, which may cause problems such as excessive ventilation and a decrease in indoor temperature, and crime prevention. Problems may occur.

  Then, in the following patent document 1 etc., the ventilation apparatus which can be attached to a sliding door is proposed. If such a ventilator is attached to the sliding door, the sliding door can be provided with a ventilation function, so that the above problems can be prevented.

Japanese Patent No. 3720902

  The ventilator as exemplified in Patent Document 1 is generally commercially available, but has a problem that it cannot be attached depending on the type of sliding door. In particular, it is often possible to attach a ventilator to a sliding door that has been sold in recent years, but it is not easy to attach a ventilator to an old type of sliding door that has been sold several decades ago. There was a problem that the ventilation function could not be given.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a lower arm member that can easily provide a ventilation function to a sliding door, and a sliding door and a sliding window provided with the same. . Moreover, an object of this invention is to provide a lower heel member with high added value, and a sliding door and a sliding window provided with the same.

  A lower rod member according to the present invention includes a hollow rod body having a pair of side plate portions extending in parallel to each other, and a door pulley mounting portion for mounting a door roller formed on the rail body and rolling on a rail. And a ventilation port formed in at least one of the pair of side plate portions, and an opening / closing unit attached to the bag body for opening and closing the ventilation port.

  According to such a configuration, a ventilation port can be formed in the side plate portion of the heel body of the lower rod member, and the ventilation port can be opened and closed by the opening and closing unit, so compared with a configuration in which a ventilation device is separately attached to the sliding door. Thus, the sliding door can be easily provided with a ventilation function. For example, even if it is an old type sliding door etc. which cannot attach a ventilator, according to this invention, a ventilation function can be easily given to a sliding door by replacing | exchanging a lower arm member.

  It is also conceivable to provide a ventilation port and an opening / closing part on the upper collar member instead of the lower collar member. However, since the upper heel member usually has a shorter length in the height direction than the lower heel member, it is difficult to provide a ventilation port and an opening / closing portion on the upper heel member. On the other hand, since the length of the lower heel member is generally long, according to the present invention, the lower heel member can be easily provided with a ventilation port and an opening / closing portion.

  In addition, since the undercarriage member is provided with a door carriage mounting portion, when the door car is consumed, the sliding door can be given a ventilation function simultaneously with the replacement of the door car by exchanging the undercarriage member. . That is, when exchanging the door cart, it is possible to provide a high-value added underarm member that can give the sliding door a ventilation function by exchanging the entire underarm member as necessary.

  Depending on the type of door car, it may not be possible to replace it with the same car due to production stoppage of the door car. In such a case, when another door cart is attached to the lower arm member, the position of the door wheel in the height direction with respect to the lower arm member may be displaced or rattling may occur. Even in such a case, if the lower arm member is replaced as described above, these problems can be prevented from occurring, and therefore, a lower arm member with higher added value can be provided.

  The opening / closing unit may include an opening / closing plate that is slidably attached to the bag main body, and an operation unit that is operated when the opening / closing plate is slid. In this case, the opening / closing plate closes the ventilation port at a first position where the opening formed in the opening / closing plate does not face the ventilation port, and the opening at a second position where the opening faces the ventilation port. The ventilation opening may be opened.

  According to such a configuration, the ventilation opening can be opened and closed by operating the operating portion and sliding the opening and closing plate between the first position and the second position. Therefore, ventilation can be performed by easily opening and closing the ventilation opening.

  The door carriage mounting portion may be formed at both ends of the bag main body. Moreover, the said ventilation port may be formed between the said door-car attachment parts each formed in the both ends of the said main body. In this case, a guide portion for slidably holding the opening / closing plate is formed in the heel body so that the opening / closing plate is inserted into the heel body from one end of the heel body, After attaching the opening / closing plate along the guide portion, the door cart may be attached to the door wheel mounting portion.

  According to such a structure, even if it is a lower eaves member which has an impeller attachment part, after inserting an opening-and-closing plate in the coffin main body from one end part of an eaves body, attaching an opening-and-closing plate along a guide part, By attaching to the door-car attachment portion, the opening / closing plate can be easily arranged in the bag main body. Therefore, even a lower heel member having a door pulley mounting portion can easily have a ventilation function.

  The ventilation openings may be formed in the pair of side plate portions, respectively. In this case, the first region in which one side plate portion of the pair of side plate portions has a ventilation port and the second region in which the other side plate portion has a ventilation port do not face each other. May be arranged.

  According to such a configuration, the first region in which the ventilation port is formed in one side plate portion of the pair of side plate portions, and the second region in which the ventilation port is formed in the other side plate portion, Since they do not face each other, the distance between these ventilation openings can be increased. When the distance between the ventilation openings is short, a sound like a whistle may be generated. Therefore, with the configuration of the present invention, the generation of abnormal noise can be prevented and ventilation can be performed satisfactorily. A scissors member can be provided.

  The sliding door according to the present invention includes a rectangular frame including the lower heel member and a wall portion held by the frame. According to such a structure, the sliding door which produces the effect similar to the effect by the said lower collar member can be provided.

  The sliding window according to the present invention includes a plurality of windows, and at least one of the plurality of windows includes a rectangular frame including the lower collar member, and a glass plate held by the frame. It is characterized by that. According to such a configuration, it is possible to provide a sliding window that exhibits the same effect as that of the lower collar member.

  According to the present invention, since the ventilation port can be formed in the side plate portion of the heel body of the lower rod member and the ventilation port can be opened and closed by the opening and closing unit, the sliding door can easily have a ventilation function. Moreover, according to this invention, when replacing | exchanging a door car, providing the lower heel member with a high added value of being able to give a ventilation function to a sliding door by replacing | exchanging the whole lower heel member as needed. Can do.

It is a front view which shows an example of the sliding door provided with the lower collar member which concerns on one Embodiment of this invention. It is the perspective view which looked at the lower collar member from diagonally downward. It is a front view of a lower collar member. It is sectional drawing of an inner side sliding door and an outer side sliding door.

  FIG. 1 is a front view showing an example of a sliding door 100 including a lower heel member 1 according to an embodiment of the present invention. The sliding door 100 in this embodiment is for partitioning the room and the outdoors, and includes an inner sliding door 101 positioned on the indoor side and an outer sliding door 102 positioned on the outdoor side. However, the present invention is not limited to the configuration including two sliding doors 100, and can also be applied to a configuration including three or more sliding doors 100 or a configuration including one sliding door 100. Moreover, it is also possible to apply the lower armor member 1 according to the present invention to the sliding door 100 having another form.

  The inner sliding door 101 and the outer sliding door 102 are connected to the upper rod member 2 extending in parallel to the lower rod member 1 and both ends of the lower rod member 1 and the upper rod member 2 in addition to the lower rod member 1. Two recumbent members 3. These flange members 1 to 3 constitute a frame 4 that is framed in a rectangular shape. In this example, a middle collar member 5 is further provided between the lower collar member 1 and the upper collar member 2 so as to extend in parallel to the lower collar member 1 and the upper collar member 2. It is also possible to omit the flange member 5.

  The frame 4 constitutes a window by holding a glass plate 6 as a wall surface portion. That is, in this embodiment, the case where this invention is applied to the sliding window provided with the several window is shown. In this case, the present invention can be applied to at least one of the plurality of windows provided in the sliding window. In this example, the glass plate 6 is held between the lower collar member 1 and the middle collar member 5 and between the upper collar member 2 and the middle collar member 5, but the middle collar member 5 is omitted. In this case, the glass plate 6 may be held between the lower heel member 1 and the upper heel member 2. Moreover, the wall surface part hold | maintained by the frame 4 will not be restricted to the glass plate 6, but can employ | adopt all the other wall surface parts, if it is a structure which can partition indoors and outdoors.

  A door pulley 11 that rolls on a rail is attached to the lower collar member 1. In this example, a door wheel 11 is provided at both ends of the lower arm member 1 and is rotatably attached around a rotation shaft 12 extending in a direction orthogonal to the sliding door 100. Thereby, when sliding the sliding door 100 to a horizontal direction, the door pulley 11 can be rolled on a rail and the sliding door 100 can be slid smoothly.

  The inner sliding door 101 and the outer sliding door 102 extend in parallel adjacent to each other so that relative movement can be restricted by the key 7 in a closed state in which only the end portions thereof face each other as shown in FIG. It has become. In the present embodiment, the ventilation port 13 is formed in the lower arm member 1 so that ventilation can be performed between the room and the outdoors even in the closed state as shown in FIG. .

  FIG. 2 is a perspective view of the lower collar member 1 as viewed obliquely from below. FIG. 3 is a front view of the lower collar member 1. FIG. 4 is a cross-sectional view of the inner sliding door 101 and the outer sliding door 102. As shown in FIG. 4, the inner sliding door 101 and the outer sliding door 102 are each held on a rail 201 formed so as to protrude upward from the rail member 200, and by rolling the door pulley 11 on each rail 201. The inner sliding door 101 and the outer sliding door 102 can be slid.

  The rail member 200 is not limited to the configuration in which the two rails 201 are connected by the base plate 202 extending obliquely as shown in FIG. 4, for example, the configuration in which the two rails 201 are connected by a base plate having a step, Any other configuration such as a configuration in which 201 is separated can be employed.

  Below, with reference to FIGS. 2-4, the specific structural example of the lower collar member 1 is demonstrated. In this example, the case where the lower eaves member 1 according to the present invention is applied to both the inner sliding door 101 and the outer sliding door 102 will be described. However, the present invention is not limited to such a configuration, and the configuration is applied to only one of them. It may be.

  The lower heel member 1 includes a heel body 20 having an elongated shape along the horizontal direction. The bag body 20 can be integrally formed by, for example, extrusion molding using aluminum as a material. The bag main body 20 includes a pair of side plate portions 21 extending in parallel with each other, and the pair of side plate portions 21 are connected to each other with a space therebetween, thereby forming a hollow shape. However, the material of the heel body 20 is not limited to aluminum, and any other material can be employed. Further, the bag body 20 is not limited to being integrally formed by extrusion molding, and may be configured to be assembled, for example.

  In this example, as shown in FIG. 4, the lower portions of the pair of side plate portions 21 are connected by the lower plate portion 22 extending in the horizontal direction, and the upper portions of the pair of side plate portions 21 are the upper portions extending in the horizontal direction. The plates 23 are connected. In the lower eaves member 1 of the outer sliding door 102, an intermediate plate portion 24 extending in the horizontal direction is further provided between the lower plate portion 22 and the upper plate portion 23, and the pair of side plate portions 21 are formed by the intermediate plate portion 24. The central part of is connected.

  As shown in FIG. 2, the opening 25 is formed in the both ends of the longitudinal direction in the lower board part 22, respectively. A region above the opening 25 in the bag main body 20 constitutes a door pulley mounting portion 26 for mounting the door roller 11. The door pulley mounting portion 26 is provided with a mechanism (not shown) for fixing the door wheel 11, for example. Thereby, the door roller 11 can be inserted into the bag main body 20 from below through the opening 25, and the door wheel 11 can be attached to the door wheel mounting portion 26.

  As shown in FIG. 4, the U-shaped section formed at the lower portion of the bag main body 20 by the pair of side plate portions 21 and the lower plate portion 22 has a rail receiving portion 27 for receiving the rail 201 from below. It is composed. Further, a U-shaped section formed on the upper portion of the bag main body 20 by the pair of side plate portions 21 and the upper plate portion 23 is a wall surface portion receiving portion 28 for receiving a wall surface portion such as the glass plate 6 from above. Is configured.

  As shown in FIG. 4, a claw portion 29 for attaching the sealing material 14 may be formed at the lower end portion of the inner surface of each side plate portion 21 so as to extend from one end portion to the other end portion in the longitudinal direction. . In this case, for example, the sealing material 14 may be attached to the claw portion 29 of the one side plate portion 21 in each heel body 20. In this example, the sealing material 14 is attached to the claw portion 29 of the side plate portion 21 on the outdoor side of each bag main body 20. However, it is possible to omit at least one claw portion 29 in each heel body 20.

  As shown in FIG. 4, the upper plate portion 23 of the lower sliding member 1 of the inner sliding door 101 and the middle plate portion 24 of the lower sliding member 1 of the outer sliding door 102 have both longitudinal end portions of the lower sliding member 1. A connecting portion 30 for connecting the recumbent member 3 may be formed. By inserting a connecting tool (not shown) from the recumbent member 3 side in a state in which the recumbent member 3 is fitted to both longitudinal ends of each lower reed member 1, and connecting to each connecting part 30, The horizontal reed member 3 can be fixed to each lower reed member 1.

  In the present embodiment, ventilation ports 13 are formed in both the pair of side plate portions 21 in each lower arm member 1. These ventilation openings 13 are formed in the side plate portions 21 between the door wheel mounting portions 26 formed at both ends of the bag main body 20, that is, on the center side of the door wheel mounting portions 26.

  In this example, as shown in FIG. 3, a plurality of ventilation ports 131 are formed at the center side of the both end portions of one side plate portion 21 slightly from the center, and further in the other side plate portion 21. A plurality of ventilation openings 132 are formed on the center side. Thereby, 1st area | region R1 in which the ventilation port 131 is formed in one side-plate part 21 and 2nd area | region R2 in which the ventilation port 132 is formed in the other side-plate part 21 are arrange | positioned so that it may not mutually oppose. Has been.

  The length (width) of the lower collar member 1 is, for example, about 800 to 900 mm. Moreover, each ventilation port 13 can be formed by a long hole having a width of 8 mm and a height of 16 mm, for example. However, each ventilation port 13 is not limited to such a shape, and can be formed in any other shape. Moreover, the ventilation port 13 is not limited to a configuration in which a plurality of ventilation holes 13 are provided in each side plate portion 21, and may be a configuration in which only one ventilation port 13 is provided.

  In this embodiment, the opening / closing part 15 for opening and closing the ventilation port 13 formed in the side plate part 21 on the indoor side is attached to the inside of the bag main body 20. The opening / closing unit 15 includes, for example, an opening / closing plate 151 and an operation unit 152. As the material of the opening / closing plate 151, any other material such as a metal other than aluminum, such as stainless steel or iron, or a resin can be employed in addition to aluminum.

  A guide portion 31 for holding the opening / closing plate 151 slidably is formed on the inner surface of the side plate portion 21 on the indoor side. In this example, the guide portion 31 is formed to extend in the horizontal direction from one end portion to the other end portion in the longitudinal direction of the side plate portion 21, and the opening / closing plate 151 is slid in the horizontal direction along the guide portion 31. Be able to.

  However, the guide portion 31 is not limited to the configuration formed from one end portion to the other end portion in the longitudinal direction of the side plate portion 21, but is removed by, for example, partially cutting the end portion of the side plate portion 21. The structure etc. which were partially formed between the other end parts from may be sufficient. Further, as shown in FIG. 3, the configuration is not limited to the configuration in which the guide portions 31 are formed to the both end edges in the longitudinal direction of the side plate portion 21, and for example, the portions from the both end edges to the door wheel mounting portion 26 are each removed by cutting or the like. It may be a configuration.

  The operation unit 152 is for operating when the opening / closing plate 151 is slid. In this example, as shown in FIGS. 2 and 3, a long hole 32 extending in the horizontal direction is formed in the indoor side plate portion 21, and the operation attached to the opening / closing plate 151 through the long hole 32. The part 152 faces the outside of the bag body 20 (inside the room). Therefore, the user can slide the open / close plate 151 in the horizontal direction by moving the operation unit 152 along the long hole 32.

  The opening / closing plate 151 is a rectangular member facing the first region R1 in which the ventilation port 13 of the side plate portion 21 is formed, and is used for communicating the ventilation port 13 of the side plate portion 21 and the inside of the bag main body 20. An opening 153 is formed. In this example, a plurality of openings 153 are formed in each opening / closing plate 151, and the shape, number, interval, and the like of these openings 153 are the same as those of the ventilation port 13 in the first region R 1 facing the opening / closing plate 151. It corresponds to the shape, number and interval.

  Accordingly, as shown in FIG. 3, the ventilation port 13 is closed at the first position where the opening 153 formed in the opening / closing plate 151 does not face the ventilation port 13. On the other hand, when the opening / closing plate 151 is slid by operating the operation unit 152 from this state and the opening 153 is moved to the second position facing the ventilation port 13 as shown in FIG. When the inside of the main body 20 communicates with the inside of the main body 20 via the opening 153, the ventilation port 13 is opened.

  In this case, the ventilation port 13 formed in the first region R1 of the one side plate portion 21 and the ventilation port 13 formed in the second region R2 of the other side plate portion 21 are spaces in the bag main body 20. Therefore, ventilation can be performed between the room and the outside. In this way, by operating the operation unit 152 and sliding the opening / closing plate 151 between the first position and the second position, the ventilation port 13 can be easily opened and closed to perform ventilation.

  However, the opening / closing portion 15 is not limited to the above-described configuration, and any other configuration capable of opening and closing the ventilation port 13 can be employed. Moreover, it is also possible to provide the opening / closing part 15 not on the inside of the bag main body 20 but on the outside. Moreover, the opening / closing part 15 may be provided not on the indoor side but on the side plate part 21 on the outdoor side, or the opening / closing part 15 may be provided on both the side plate part 21 on the indoor side and on the outdoor side.

  At least one of the ventilation ports 13 may be covered with a member (not shown) having air permeability such as a net, for example. When the member is provided on the side plate portion 21 on the outdoor side, it is possible to prevent foreign matters (for example, insects) from entering the cocoon body 20 from the outside. On the other hand, when the member is provided on the side plate portion 21 on the indoor side, it is possible not only to prevent foreign substances from entering the bag body 20 from the room, but also the user inserts a finger or the like into the ventilation port 13. Can be prevented. Thereby, the situation where a user is injured can be prevented by closing the opening-and-closing part 15 in the state which inserted the finger | toe etc. into the ventilation port 13 by the user.

  Moreover, the structure by which the ventilation port 13 was formed only in one side plate part 21 among the pair of side plate parts 21, and the opening-and-closing part 15 was provided in the said ventilation port 13 may be sufficient. In this case, for example, ventilation ports 13 may be formed in portions other than the side plate portion 21 such as the lower plate portion 22 so that ventilation can be performed between the room and the outdoors. For example, in the case of the configuration in which the lower plate portion 22 that connects the lower portions of the pair of side plate portions 21 is omitted, since the lower portion of the bag main body 20 is open, the ventilation port 13 is provided in the side plate portion 21 on the outdoor side. Even if it does not form, ventilation can be performed from the lower part of the bag main body 20. As described above, in the case where the ventilation port 13 is formed only in the side plate portion 21 on the indoor side, if the opening / closing portion 15 is provided in the ventilation port 13, the ventilation port 13 can be easily opened and closed from the room. Is possible.

  According to the embodiment as described above, the ventilation port 13 can be formed in the side plate portion 21 of the bag main body 20 of the lower rod member 1, and the ventilation port 13 can be opened and closed by the opening / closing unit 15. The sliding door 100 can be easily provided with a ventilation function as compared with a configuration in which the apparatus is separately attached. For example, even if it is an old type sliding door etc. which cannot attach a ventilation apparatus, according to this embodiment, the ventilation function can be easily given to the sliding door 100 by replacing | exchanging the lower heel member 1. FIG.

  It is also conceivable to provide the ventilation port 13 and the opening / closing part 15 in the upper collar member 2 instead of the lower collar member 1. However, since the upper heel member 2 is usually shorter in the height direction than the lower heel member 1, it is difficult to provide the upper heel member 2 with the ventilation port 13 and the opening / closing portion 15. On the other hand, since the length of the lower heel member 1 is generally long, the ventilation port 13 and the opening / closing part 15 can be easily provided in the lower heel member 1 according to this embodiment.

  In addition, since the lower arm member 1 is provided with the door carriage mounting portion 26, when the door carriage 11 is exhausted, the lower arm member 1 is replaced, so that the sliding door 100 has a ventilation function simultaneously with the replacement of the door wheel 11. Can be given. That is, when the door pulley 11 is replaced, the lower armor member 1 having a high added value can be provided by allowing the sliding door 100 to have a ventilation function by replacing the entire lower armor member 1 as necessary. .

  Depending on the type of door car 11, it may not be possible to replace the door car 11 with the same door car 11 due to production stoppage of the door car 11. In such a case, when another door cart 11 is attached to the lower arm member 1, the position of the door wheel 11 in the height direction with respect to the lower arm member 1 may be shifted or rattled. Even in such a case, if the lower heel member 1 is replaced as described above, these problems can be prevented from occurring, and therefore, the lower heel member 1 having higher added value can be provided. it can.

  Further, in the present embodiment, the opening / closing plate 151 is inserted into the heel body 20 from one end of the heel body 20 along the direction indicated by the arrow A in FIG. 3, and the opening / closing plate 151 is attached along the guide portion 31. Thereafter, the door pulley 11 can be attached to the door attachment portion 26. Thereby, even if it is the lower eaves member 1 which has the door-car attachment part 26, after inserting the opening-and-closing plate 151 in the eaves body 20 from the one end part of the eaves body 20, and attaching the opening-and-closing plate 151 along the guide part 31 By attaching the door wheel 11 to the door wheel mounting portion 26, the opening / closing plate 151 can be easily arranged in the bag main body 20. Therefore, even the lower heel member 1 having the door pulley mounting portion 26 can easily have a ventilation function.

  Further, in the present embodiment, the first region R1 in which the ventilation port 13 is formed in one side plate portion 21 of the pair of side plate portions 21 and the first region R1 in which the ventilation port 13 is formed in the other side plate portion 21. Since 2 area | region R2 does not mutually oppose, the distance of these ventilation openings 13 can be lengthened. When the distance between the ventilation openings 13 is short, a sound like a whistle may be generated. Therefore, the configuration as in this embodiment can prevent the generation of abnormal noise and provide good ventilation. The lower arm member 1 which can be provided can be provided.

DESCRIPTION OF SYMBOLS 1 Lower gutter member 2 Upper gutter member 3 Horizontal gutter member 4 Frame body 5 Medium gutter member 6 Glass plate 11 Door wheel 13 Ventilation opening 15 Opening and closing part 20 Gutter main body 21 Side plate part 22 Lower plate part 23 Upper plate part 24 Attachment part 31 Guide part 32 Slot 100 Sliding door 101 Inner sliding door 102 Outer sliding door 151 Opening and closing plate 152 Operation part 153 Opening 200 Rail member 201 Rail R1 1st area | region R2 2nd area | region

Claims (6)

A hollow bag body having a pair of side plate portions extending in parallel with each other;
A door-to-door mounting portion for mounting a door wheel formed on the rail body and rolling on the rail;
A ventilation opening formed in at least one of the pair of side plate portions;
A lower eaves member attached to the eaves body and comprising an opening / closing portion for opening and closing the ventilation port. The opening / closing portion includes an opening / closing plate slidably attached to the bag main body, and an operation portion for operating when sliding the opening / closing plate,
The opening / closing plate closes the ventilation port at a first position where an opening formed in the opening / closing plate does not face the ventilation port, and the ventilation port at a second position where the opening faces the ventilation port. The lower armor member according to claim 1, wherein: The door carriage mounting portion is formed at both ends of the bag main body,
The ventilation opening is formed between the door pulley mounting portions formed at both ends of the bag body,
A guide portion for slidably holding the opening / closing plate is formed in the heel body so that the opening / closing plate is inserted into the heel body from one end portion of the heel body. The lower armor member according to claim 2, wherein the door cart can be attached to the door wheel attaching portion after the opening / closing plate is attached along the door. The ventilation openings are respectively formed in the pair of side plate portions,
A first region in which one side plate portion of the pair of side plate portions has a ventilation port and a second region in which the other side plate portion has a ventilation port are arranged so as not to face each other. The lower armor member according to any one of claims 1 to 3, wherein A rectangular frame including the lower armor member according to any one of claims 1 to 4,
A sliding door comprising a wall portion held by the frame. With multiple windows,
At least one of the plurality of windows includes a rectangular frame body including the lower collar member according to any one of claims 1 to 4 and a glass plate held by the frame body. Sliding window.

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