JP7511391B2 - Sliding door device - Google Patents

Description

The present invention relates to a sliding door device that opens and closes the sliding door body in the width direction.

Conventionally, a typical sliding door has been provided with a sliding door body that slides in the width direction to open and close, an upper frame that fits the upper end of the sliding door body into a groove to guide it in the opening and closing direction, and a lower frame that fits into a wheel at the lower end of the sliding door body to guide the lower end in the opening and closing direction (see, for example, Patent Document 1).
In conventional sliding doors, to fit the sliding door body between the upper and lower frames, the sliding door body is first inserted into the groove of the upper frame and lifted up, and the wheel at the bottom end of the sliding door body is fitted into the rail on the lower frame. To remove the sliding door body, the sliding door body is lifted up to remove the wheel at the bottom end from the rail, and then the top end of the sliding door body is removed from the groove of the upper frame.
For this reason, in conventional sliding doors, a gap is provided between the upper end of the sliding door body and the upper bottom portion of the recessed groove in the upper frame, allowing the sliding door body to be lifted.

Utility Model Registration No. 3183840

However, with the above-mentioned conventional structure, if the sliding door body vibrates in a complex manner in the vertical and thickness directions due to, for example, an earthquake, strong wind, or violent opening and closing operations, there is a risk that the sliding door body may come off from between the upper and lower frames.
Therefore, as shown in FIG. 7, an external stopper member 101 that protrudes upward and is close to the upper bottom part 111 in the groove of the upper frame 110 is provided near the center in the door width direction at the upper end of the sliding door body 100, and an escape recess 111a is provided in the upper bottom part 111 of the upper frame 110 near the center in the horizontal width direction, so that when the sliding door body 100 is attached or detached between the upper frame 110 and the lower frame 120, the sliding door body 100 is moved toward the center of the upper frame 110 and the external stopper member 101 is fitted into the escape recess 111a to lift up the sliding door body 100.
However, even with this configuration, if the sliding door main body 100 vibrates in a complex manner while opening or closing, the external stop member 101 may fit into the escape recess 111a, causing the sliding door main body 100 to lift up and the rollers 102 to come off the rail.

In order to solve at least part of the above problems, one aspect of the present invention has the following configuration.
The sliding door includes a sliding door body that slides in the width direction to open and close, an upper frame that fits into an upper end of the sliding door body to guide the upper end in the opening and closing direction, and a guide part that fits into a lower end of the sliding door body to guide the lower end in the opening and closing direction,
An external stopper member is provided at the upper end of the sliding door body and protrudes upward and approaches the upper frame from below.
the upper frame includes an escape recess provided in a portion in a width direction and into which the outer stop member can be inserted when the outer stop member moves upward, and a closing member that closes the escape recess in an openable and closable manner ;
The outer stopper members are provided in a plurality at intervals in the door width direction on the sliding door body, and the relief recesses and the closing members are provided in a plurality corresponding to the plurality of outer stopper members,
A sliding door device characterized in that some of the multiple escape recesses and closing members are located above an opening secured on one side when the sliding door body is moved to the other side in the opening/closing direction, and other parts are located above an opening secured on the one side when the sliding door body is moved to the other side in the opening/closing direction .

The present invention is configured as described above, so it is possible to prevent the sliding door body from coming off.

1 is a front view showing an example of a sliding door device according to the present invention, in which a main portion is cut away and shown in cross section. 4A shows a state in which one of the closing members is open, and FIG. 4B shows a state in which the sliding door body is lifted to release the outer stopper member and fit it into the recess. 1A and 1B are enlarged cross-sectional views of the sliding door device taken along the center of the thickness direction of the sliding door body, in which (a) shows the escape recess when closed by the closing member, and (b) shows the escape recess when open. 3A and 3B are longitudinal sectional views of essential parts of the sliding door device, in which FIG. 3A shows a state in which the relief recess is closed by a closing member, and FIG. 3B shows a state in which the relief recess is open. 1A and 1B are enlarged cross-sectional views of another example of a sliding door device according to the present invention, taken along the center of the thickness direction of the sliding door body, in which (a) shows a state in which the escape recess is closed by a closing member, and (b) shows a state in which the escape recess is open. 1A and 1B are enlarged cross-sectional views of another example of a sliding door device according to the present invention, taken along the center in the thickness direction of the sliding door body, in which (a) shows a state in which the escape recess is closed by a closing member, and (b) shows a state in which the insertion hole is open. FIG. 2 is a front view showing an example of a sliding door device before improvement.

This embodiment discloses the following features.
The first feature is that the door comprises a sliding door body that slides in the width direction to open and close, an upper frame that fits into the upper end side of the sliding door body to guide the upper end side in the opening and closing direction, and a guide part that fits into the lower end side of the sliding door body to guide the lower end side in the opening and closing direction, and an external stop member that protrudes upward and approaches the upper frame from below is provided at the upper end of the sliding door body, and the upper frame has an escape recess that is provided in a part in the width direction and can insert the external stop member when it moves upward, and a closing member that closes the escape recess so as to be able to open and close (see FIGS. 1 to 6).

As a second feature, when the sliding door body is moved to one side in the opening/closing direction, the relief recess and the closing member are located above the opening provided on the other side (see FIG. 2).
Here, the "opening" includes not only an opening through which people or objects can pass, but also an opening such as a single-sided door pocket, in which one side in the door thickness direction is a wall and the other side is open.

As a third feature, the external stopper members are provided in a plurality of positions spaced apart from one another in the door width direction relative to the sliding door body, the escape recesses and the closing members are provided in a plurality of positions corresponding to the plurality of external stopper members, and among the plurality of escape recesses and the closing members, some are positioned above the opening secured on one side when the sliding door body is moved to one side in the opening/closing direction, and the other parts are positioned above the opening secured on the one side when the sliding door body is moved to the other side in the opening/closing direction (see FIG. 2).

The fourth feature is that the closing member is a member that opens and closes the relief recess by sliding (see Figures 2 to 4).

The fifth feature is that the closing member is a member that opens and closes the relief recess by being attached and detached (see Figures 5 and 6).

As a sixth feature, the closure member is removably inserted into the recess (see Figure 6).

As a seventh feature, the relief recess is formed as a bottomed hole with the upper inner end as the upper bottom, and the closing member screws the threaded portion into the relief recess and closes the opening of the relief recess with the lower end portion (see Figure 6).

<Specific embodiment>
Next, specific embodiments having the above-mentioned features will be described in detail with reference to the drawings.
In this specification, the term "door width direction" refers to the lateral width direction of the sliding door body and may also be referred to as the left-right direction, lateral width direction, etc. Additionally, the term "door thickness direction" refers to the thickness direction of the sliding door body.

This sliding door device 1 comprises left and right sliding door bodies 10, 20 that slide in the width direction to open and close, an upper frame 30 that fits into the upper end of the sliding door bodies 10, 20 and linearly guides the upper end in the opening and closing direction, a lower frame 40 that fits into the lower end of the sliding door bodies 10, 20 and linearly guides the lower end in the opening and closing direction, and side frames 51, 52 that support the upper frame 30 and the lower frame 40 at both the left and right ends, forming a sliding door that opens and closes an opening A surrounded by the upper frame 30, the lower frame 40, and the side frames 51, 52 using the sliding door bodies 10, 20.

One of the sliding door bodies 10 is formed into a rectangular plate shape by top, bottom, left and right frames, framework, exterior panels, etc. This sliding door body 10 has a number of external stop members 11 at the upper end that protrude upward and approach the upper frame 30 from below, and a door roller 12 at the lower end that rolls along a guide portion 41 on the lower frame 40.

A plurality of external stop members 11 are provided at intervals in the door width direction on a single sliding door body 10, and according to a preferred example of this embodiment, they are provided near one end and the other end of the sliding door body 10 in the door width direction.
Each external stop member 11 may be any protrusion that is fixed to the upper end of the sliding door main body 10 and protrudes upward. In the example shown in Figure 3, it is the head of a fastener (e.g., a bolt, a screw, a rivet, etc.) that is fastened to the upper end of the sliding door main body 10.
The height dimension of this external stop member 11 is appropriately set so that when the sliding door main body 10 is lifted upward, the upper end of the external stop member 11 abuts against the upper bottom portion of the guide groove 30b1 (see Figure 4) of the upper frame 30, preventing the door roller 12 from coming off the guide portion 41.

The rollers 12 are supported rotatably at the lower end of the sliding door body 10, near one end and the other end in the door width direction. The lower end of the outer periphery of each roller 12 protrudes downward.

The other sliding door body 20 is configured symmetrically to the sliding door body 10, and like the sliding door body 10, has multiple external stop members 21 and multiple door rollers 22.

As shown in Figure 4, the upper frame 30 comprises an upper frame main body member 30a having a generally concave cross section with an opening facing downward, and a guide member 30b that is fitted into the concave portion of the upper frame main body member 30a to guide the sliding door main bodies 10, 20 in the opening and closing directions.
As another example, the upper frame main body member 30a and the guide member 30b can be formed as a single member.

The upper frame main body member 30a is formed, for example, from wood, synthetic resin, etc., in a long shape extending in the door width direction.
A groove-like mating recess 30a1 is formed in the lower end of this upper frame main body member 30a and extends in the door width direction.

A plurality of escape recesses 31 are provided near the center in the width direction on the upper bottom part of the fitting recess 30a1 so as to face the respective outer stop members 11 (or 21) of the sliding door main body 10 (or 20).
Each of the relief recesses 31 is formed as a bottomed hole with the inner upper end as the upper bottom, and the outer stop members 11, 21 can be loosely inserted into each of the relief recesses 31. As another example, the relief recesses 31 can be formed as through holes.

The guide member 30b is a member that fits into the fitting recess 30a1 of the upper frame 30 in an elongated shape across the width direction, and is made of a hard metal material such as an aluminum alloy.
The guide member 30b has a lower end formed with two rows of guide grooves 30b1, 30b1 for guiding the sliding door bodies 10, 20 in the opening and closing directions (see FIG. 4).

Each guide groove 30b1 is formed in a concave shape in vertical section with an opening downward, and is formed in an elongated shape that spans almost the entire length in the lateral direction of the opening A. In addition, in Fig. 4, reference numeral 30b2 denotes a partition wall between the guide grooves 30b1, 30b1 on both sides in the door thickness direction.
At the upper bottom of each guide groove 30b1, a through portion 34 communicating with the relief recess 31 and a slide groove 35 supporting the closing member 32 at the inner edge of this through portion 34 are provided.

The through portion 34 is formed to a size that allows the external stop member 11 to be loosely inserted, and according to the illustrated example, the dimension in the door thickness direction is set to be approximately equal to the inner diameter of the relief recess 31.
This through portion 34 is formed in an elongated shape that continues in the door width direction so as to include the relief recess 31 .

The slide grooves 35 are provided on the inner edges of one side and the other side of the through portion 34 in the door thickness direction (see FIG. 4).
Each slide groove 35 is formed in a generally concave shape in vertical section (in the illustrated example, the vertical section is generally horizontally V-shaped) that fits into the edge of the closure member 32, and continues in the door width direction.
The length of each slide groove 35 in the door width direction is appropriately set so that the closure member 32 can be slid to open and close the relief recess 31 .

The closing member 32 is a member that opens and closes the relief recess 31 by sliding.
The closing member 32 is a flat plate-like member capable of covering the opening of the relief recess 31, and is made of a hard material such as a hard metal material or a hard synthetic resin material. The closing member 32 in the illustrated example is formed in a rectangular flat plate shape that fits between the slide grooves 35, 35.
This closure member 32 is secured to the upper frame main body member 30a by a removable fastener 33 (e.g., a screw or bolt) to prevent it from easily moving in the door width direction when the escape recess 31 is closed (see Figure 3).

To explain how the closing member 32 is attached to the upper frame 30, the slide grooves 35, 35 continue to the ends of the guide member 30b in the width direction, and the closing member 32 is inserted into the ends of the slide grooves 35, 35 so that it can be removed and inserted.

In the above configuration, some of the multiple escape recesses 31, 31 and closing members 32, 32 are located above the opening A secured on one side of the sliding door body 10 (or 20) when the sliding door body is moved to the other side in the opening/closing direction (see FIG. 2(a)), and the other parts are located above the opening A secured on the one side when the sliding door body is moved to the other side in the opening/closing direction.

The lower frame 40 is an elongated member that spans between the lower ends of the left and right side frames 51, 52, and has a guide portion 41 on its upper surface that runs continuously over almost the entire length in the longitudinal direction.

The guide portion 41 is a portion that fits into the door rollers 12, 22 to cause the door rollers 12, 22 to roll in the opening and closing direction, and is formed, for example, in the shape of a convex rail or a concave groove that extends in the door width direction.

As another example, it is possible to omit the bottom frame 40 and provide a guide portion 41 on the floor surface, or to omit the rollers 12, 22 and have the lower end of the sliding door body 10, 20 slide against the guide portion 41.

The side frames 51, 52 are each long members that extend in the vertical direction, with their upper ends fastened to the end in the width direction of the upper frame 30 and their lower ends fastened to the end in the same direction of the lower frame 40.

<Action and effect>
Next, the characteristic functions and effects of the sliding door device 1 having the above configuration will be described in detail.
As shown in FIG. 1, when the sliding door bodies 10, 20 are in a closed state, the upper ends of the outer stoppers 11, 21 are located close to the upper bottom of the guide groove 30b1.
Therefore, when the sliding door body 10, 20 is lifted due to vibration during opening and closing operations, the upper end of the outer stopper member 11, 21 abuts against the upper bottom of the guide groove 30b1 or the closing member 32. This prevents the door rollers 12, 22 from coming off the guide portion 41.

Next, the procedure for removing the sliding door body 10 or 20 from between the upper frame 30 and the lower frame 40 will be described in detail.
First, as shown in FIG. 2(a), both sliding door bodies 10, 20 are moved toward one side in the opening/closing direction to provide an opening A as a working space on the other side.
An operator or the like uses a tool or the like to remove the fastener 33 of the closing member 32 located on the other side of the opening A, and slides the closing member 32 to open it.

Next, in the same manner as above, both sliding door bodies 10, 20 are moved to the other side in the opening/closing direction to secure an opening A on one side that serves as a working space, and the space within this opening A is used to remove the fastener 33 of the closing member 32 located on the one side, and the closing member 32 is slid open (not shown).

In this state, as shown in Figure 2 (b), if the sliding door body 10 or 20 is lifted toward the center of the width of the opening A, each external stop member 11 or 21 will be inserted into each escape recess 31 on both sides of the sliding door body 10 or 20 in the door width direction, and each door roller 12 or 22 will come off the guide portion 41.
Therefore, the sliding door body 10 or 20 can be removed by shifting it in the door thickness direction.

When mounting the sliding door bodies 10, 20 between the upper frame 30 and the lower frame 40, first, both closing members 32 are slid open, and one of the sliding door bodies 10 is lifted up so that both outer stop members 11, 11 fit into both escape recesses 31, 31, respectively, and the rollers 12, 12 are fitted into the guide portion 41 on the lower side. The other sliding door body 20 is fitted in the same manner.
Thereafter, both sliding door bodies 10, 20 are moved to one side in the opening/closing direction, the closing member 32 on the other side is closed, and both sliding door bodies 10, 20 are moved to the other side in the opening/closing direction, and the closing member 32 on the other side is closed.

Therefore, with the sliding door device 1 configured as described above, even if the sliding door main body 10, 20 vibrates in a complex manner in the vertical and thickness directions during opening and closing operations due to, for example, an earthquake, strong winds, or violent opening and closing operations, the sliding door main body 10, 20 can be prevented from coming out from between the upper frame 30 and the lower guide portion 41.
Furthermore, since each closing member 32 can be easily opened and closed, the workability when attaching and detaching the sliding door bodies 10, 20 is good.

Other Embodiments
Next, another embodiment of the present invention will be described. The embodiment described below is a partial modification of the above-mentioned sliding door device 1, so the modified portion will be mainly described in detail and overlapping descriptions will be omitted.

Figure 5 shows the sliding door device 1 with the guide member 30b replaced with a guide member 30b', and a closing member 32 removably attached to the underside of the guide member 30b'.

The guide member 30b' is the same as the guide member 30b except that the slide groove 35 is omitted.
The guide member 30 b ′ is provided with a through-hole 34 ′ that communicates with the relief recess 31 .

The closure member 32 is attached to the guide member 30b' by one or more removable fasteners 33 so as to cover the through-hole 34' and the relief recess 31.

Therefore, according to the embodiment shown in FIG. 5, like the sliding door device 1 described above, the sliding door bodies 10 and 20 can be prevented from falling off the guide portion 41, and each closing member 32 can be easily opened, so the sliding door bodies 10 and 20 can be easily attached and detached.

Figure 6 shows the sliding door device 1 with the guide member 30b replaced with the guide member 30b' and the closing member 32 replaced with the closing member 60.

The closing member 60 is a threaded member (such as a screw or a bolt) having a threaded portion 61 and a head portion 62 , and is detachably inserted into the relief recess 31 .
The closure member 60 has a threaded portion 61 which is screwed into the upper bottom portion of the recess 31 , and a head portion 62 which is the lower end portion of the closure member 60 , which closes the opening of the recess 31 .

Therefore, according to the embodiment shown in FIG. 6, similarly to the sliding door device 1 described above, the sliding door bodies 10, 20 can be prevented from falling off the guide portion 41 during opening and closing operations by the closing member 60 having a simple structure.
Moreover, if the sliding door bodies 10, 20 are moved to one side in the door width direction, the closing member 60 can be easily attached and detached from the opening A on the other side. Therefore, the sliding door bodies 10, 20 can be easily attached and detached between the upper frame 30 and the lower frame 40.

<Modification>
Other examples of the means for closing the escape recess 31 so that it can be opened and closed include fitting a removable closing member (not shown) into the concave portion of the escape recess 31, sliding the closing member (not shown) in the door thickness direction to open and close the escape recess 31, and rotating the closing member (not shown) horizontally around a vertical axis as a fulcrum to open and close the escape recess 31.

Furthermore, the present invention is not limited to the above-described embodiments, and can be modified as appropriate without departing from the spirit and scope of the present invention.

10, 20: Sliding door body 11, 21: External stopper member 30: Upper frame 31: Relief recess 32, 60: Closing member 40: Lower frame 41: Guide portion A: Opening

Claims (12)

The sliding door includes a sliding door body that slides in the width direction to open and close, an upper frame that fits into an upper end of the sliding door body to guide the upper end in the opening and closing direction, and a guide part that fits into a lower end of the sliding door body to guide the lower end in the opening and closing direction,
An external stopper member is provided at the upper end of the sliding door body and protrudes upward and approaches the upper frame from below.
the upper frame includes an escape recess provided in a portion in a width direction and into which the outer stop member can be inserted when the outer stop member moves upward, and a closing member that closes the escape recess in an openable and closable manner;
The outer stopper members are provided in a plurality at intervals in the door width direction on the sliding door body, and the relief recesses and the closing members are provided in a plurality corresponding to the plurality of outer stopper members,
A sliding door device characterized in that some of the multiple escape recesses and closing members are located above an opening secured on one side when the sliding door body is moved to the other side in the opening/closing direction, and other parts are located above an opening secured on the one side when the sliding door body is moved to the other side in the opening/closing direction. The sliding door includes a sliding door body that slides in the width direction to open and close, an upper frame that fits into an upper end of the sliding door body to guide the upper end in the opening and closing direction, and a guide part that fits into a lower end of the sliding door body to guide the lower end in the opening and closing direction,
An external stopper member is provided at the upper end of the sliding door body and protrudes upward and approaches the upper frame from below.
the upper frame includes an escape recess provided in a portion in a width direction and into which the outer stop member can be inserted when the outer stop member moves upward, and a closing member that closes the escape recess in an openable and closable manner;
A sliding door device, wherein the closing member is a member that opens and closes the escape recess by being attached and detached. The sliding door includes a sliding door body that slides in the width direction to open and close, an upper frame that fits into an upper end of the sliding door body to guide the upper end in the opening and closing direction, and a guide part that fits into a lower end of the sliding door body to guide the lower end in the opening and closing direction,
An external stopper member is provided at the upper end of the sliding door body and protrudes upward and approaches the upper frame from below.
the upper frame includes an escape recess provided in a portion in a width direction and into which the outer stop member can be inserted when the outer stop member moves upward, and a closing member that closes the escape recess in an openable and closable manner;
A sliding door device, characterized in that the closing member is detachably inserted into the escape recess. The sliding door includes a sliding door body that slides in the width direction to open and close, an upper frame that fits into an upper end of the sliding door body to guide the upper end in the opening and closing direction, and a guide part that fits into a lower end of the sliding door body to guide the lower end in the opening and closing direction,
An external stopper member is provided at the upper end of the sliding door body and protrudes upward and approaches the upper frame from below.
the upper frame includes an escape recess provided in a portion in a width direction and into which the outer stop member can be inserted when the outer stop member moves upward, and a closing member that closes the escape recess in an openable and closable manner;
The relief recess is formed in a bottomed hole shape with an inner upper end as an upper bottom portion,
The sliding door device according to the present invention is characterized in that the closing member has a screw portion that is screwed into the recess and a lower end portion that closes the opening of the recess. The sliding door includes a sliding door body that slides in the width direction to open and close, an upper frame that fits into an upper end of the sliding door body to guide the upper end in the opening and closing direction, and a guide part that fits into a lower end of the sliding door body to guide the lower end in the opening and closing direction,
An external stopper member is provided at the upper end of the sliding door body and protrudes upward and approaches the upper frame from below.
the upper frame includes an escape recess provided in a portion in a width direction and into which the outer stop member can be inserted when the outer stop member moves upward, and a closing member that closes the escape recess in an openable and closable manner;
A sliding door device characterized in that the relief recess is formed in the shape of a bottomed hole or a through hole with an inner upper end serving as an upper bottom. The sliding door includes a sliding door body that slides in the width direction to open and close, an upper frame that fits into an upper end of the sliding door body to guide the upper end in the opening and closing direction, and a guide part that fits into a lower end of the sliding door body to guide the lower end in the opening and closing direction,
An external stopper member is provided at the upper end of the sliding door body and protrudes upward and approaches the upper frame from below.
the upper frame includes an escape recess provided in a portion in a width direction and into which the outer stop member can be inserted when the outer stop member moves upward, and a closing member that closes the escape recess in an openable and closable manner;
The sliding door device according to the present invention is characterized in that the closing member has a screw portion that is screwed into the recess and a lower end portion that closes the opening of the recess. The sliding door includes a sliding door body that slides in the width direction to open and close, an upper frame that fits into an upper end of the sliding door body to guide the upper end in the opening and closing direction, and a guide part that fits into a lower end of the sliding door body to guide the lower end in the opening and closing direction,
An external stopper member is provided at the upper end of the sliding door body and protrudes upward and approaches the upper frame from below.
the upper frame includes an escape recess provided in a portion in a width direction and into which the outer stop member can be inserted when the outer stop member moves upward, and a closing member that closes the escape recess in an openable and closable manner;
A sliding door device, wherein the closing member opens and closes an open lower end of the relief recess. The sliding door includes a sliding door body that slides in the width direction to open and close, an upper frame that fits into an upper end of the sliding door body to guide the upper end in the opening and closing direction, and a guide part that fits into a lower end of the sliding door body to guide the lower end in the opening and closing direction,
An external stopper member is provided at the upper end of the sliding door body and protrudes upward and approaches the upper frame from below.
the upper frame includes an escape recess provided in a portion in a width direction and into which the outer stop member can be inserted when the outer stop member moves upward, and a closing member that closes the escape recess in an openable and closable manner;
The sliding door device is characterized in that the escape recess is formed in a concave shape having an end surface in the projection direction. The sliding door includes a sliding door body that slides in the width direction to open and close, an upper frame that fits into an upper end of the sliding door body to guide the upper end in the opening and closing direction, and a guide part that fits into a lower end of the sliding door body to guide the lower end in the opening and closing direction,
An external stopper member is provided at the upper end of the sliding door body and protrudes upward and approaches the upper frame from below.
the upper frame includes an escape recess provided in a portion in a width direction and into which the outer stop member can be inserted when the outer stop member moves upward, and a closing member that closes the escape recess in an openable and closable manner;
A sliding door device, characterized in that the closing member is removably fitted into the concave portion of the escape recess. The sliding door includes a sliding door body that slides in the width direction to open and close, an upper frame that fits into an upper end of the sliding door body to guide the upper end in the opening and closing direction, and a guide part that fits into a lower end of the sliding door body to guide the lower end in the opening and closing direction,
An external stopper member is provided at the upper end of the sliding door body and protrudes upward and approaches the upper frame from below.
the upper frame includes an escape recess provided in a portion in a width direction and into which the outer stop member can be inserted when the outer stop member moves upward, and a closing member that closes the escape recess in an openable and closable manner;
The sliding door device is characterized in that the closing member opens and closes the escape recess by rotating about a vertical axis as a fulcrum. The sliding door includes a sliding door body that slides in the width direction to open and close, an upper frame that fits into an upper end of the sliding door body to guide the upper end in the opening and closing direction, and a guide part that fits into a lower end of the sliding door body to guide the lower end in the opening and closing direction,
An external stopper member is provided at the upper end of the sliding door body and protrudes upward and approaches the upper frame from below.
the upper frame includes an escape recess provided in a portion in a width direction and into which the outer stop member can be inserted when the outer stop member moves upward, and a closing member that closes the escape recess in an openable and closable manner;
A sliding door device characterized in that the closing member slides in a door thickness direction to open and close the escape recess. The sliding door device according to any one of claims 1 to 11, characterized in that when the sliding door body is moved to one side in the opening/closing direction, the escape recess and the closing member are located above an opening secured on the other side .