JPH05195668A - Sliding door - Google Patents

Abstract

PURPOSE:To prevent sliding doors from working stiffly and eliminate hindrance to passage by providing the sliding doors in parallel having an entrance split into multiple portions, securing the opening width of the entrance at the same length as that of the conventional structure, shortening the whole length of a shutter box, shortening the installation space of a sliding door device, and eliminating the overlapping of lower rails at the entrance section in the sliding door device having the shutter box on the partition wall of a platform or on a general building. CONSTITUTION:Multiple sliding doors 10, 11 constituted of the leading side and the driven side are arranged in parallel, a guide rail 25 is provided on the opposing face of one of adjacent sliding doors in the moving direction of the sliding door, and a guide roller 28 is provided on the opposing face of the other sliding door. The guide roller 28 is coupled with the guide rail 25 movably in the moving direction of the sliding door and not to be removed from the guide rail 25, and sliding door opening/closing means of the driven side following the opening/closing of the sliding door on the leading side to open or close the sliding door on the driven side are provided on both sliding doors on the leading side and the driven side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sliding door device.

[0002]

2. Description of the Related Art As shown in FIG. 16, a sliding door attached to an entrance / exit of a partition wall for partitioning a platform from a railroad track or other wall of a building is a single sliding door as shown in FIG. Alternatively, it is generally formed by a split door formed by two sliding doors. The sliding door attached to such an outer wall is housed in the door pocket 2 at the time of opening because of its appearance and safety.

[0003]

By the way, in recent years, in order to enhance the safety of the platform and the environmental friendliness due to air conditioning and the like, a partition wall is used to partition the platform from the railroad tracks.

FIG. 16 shows such a partition wall.
Such a single sliding door 1 is attached to the door pocket 2 so that it can be moved in and out.
In the case of a thing, the head of the sliding door 1 is the required opening for the doorway.
Amount D ₁The length D of the door pocket 2 is required in addition to the same length as
₂Also D₁It is necessary to install the device for the sliding door.
The required length becomes longer.

For this reason, as shown in FIG. 17, a platform 8 on which a train 7 having a short installation distance between the entrance doors 5 and 6 of the driver's cab 3 and the passenger compartment 4 adjacent to each other is stopped.
When the sliding door device as shown in FIG. 16 is installed in, for example, when the doorway 9 on the platform 8 side is installed in line with the doorway section 6a on the passenger compartment 4 side, the door pocket 2 is located on the doorway side 5 on the cab 3 side. As a result, the passengers cannot get in and out through the door 5 of the driver's cab 3 and the door 5b on the platform side.

Therefore, according to the present invention, when a plurality of sliding doors are arranged side by side and the length of the entrance opening is the same as that of the conventional structure, the required installation length of the door pocket can be reduced to about half. As described above, even if the doorways of the driver's cab and the passenger compartment are close to each other as described above, the doorways can be accessed through both doorways, and a plurality of such sliding doors arranged side by side can be installed at the doorway. It is an object of the present invention to propose a sliding door device that can be opened and closed only by providing a book rail.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the first invention is to arrange a plurality of sliding doors consisting of a leading side and a driven side in parallel, and to arrange the sliding doors adjacent to each other. A guide rail is provided on the facing surface of one of the sliding doors in the moving direction of the sliding door, and a guide roller is provided on the facing surface of the other sliding door, and the guide roller can be moved in the moving direction of the sliding door with respect to the guide rail. The guide rails are fitted so that they will not come out of the guide rails.Furthermore, the sliding doors on the leading side and the driven side will have a sliding door opening / closing means on the driven side that opens / closes the driven side sliding doors following the opening / closing of the leading side sliding doors. The sliding door device is characterized by being provided.

According to a second aspect of the invention, a leading sliding door opening / closing means for holding the sliding door in a suspended manner by an upper rail and for opening and closing the leading sliding door is provided on the upper rail portion. On the floor of the sliding door, a lower rail on the leading side is provided over the entire length of the doorway and part or the entire length of the door pocket, and a lower rail is provided on the floor of the sliding door on the driven side over part or the entire length of the door pocket. It is characterized in that the entrance and exit and each component are installed in the peripheral frame (44) to form a unit.

According to a third aspect of the present invention, in the sliding door according to the first aspect, the guide rail and the guide roller are provided at an upper portion and a lower portion of the sliding door, and either the upper or lower guide roller is provided on the driven side. A structure that can support the load of the sliding door is provided, and an opening / closing means for the leading sliding door is provided in the middle part in the height direction of the sliding door, and the floor of the leading sliding door is lowered over the entire length of the entrance / exit and part or the entire length of the door pocket. A rail is provided, and a lower rail is provided on the floor of the sliding door on the driven side over a part or the entire length of the door pocket.

A fourth aspect of the present invention is a sliding door device, wherein the driven sliding door opening / closing means is provided with stoppers on both ends of the guide rail, with which the guide rollers abut.

[0011]

When the entrance (12) is opened, all the sliding doors (10) (11) are stored in the door pocket (15).

When the doorway (12) is closed, the leading sliding door opening / closing means (29) is closed to move the leading sliding door (1).
Pull out 0) to the entrance (12) side. When this leading side sliding door (10) is pulled out, another driven side sliding door (11)
Is pulled out of the door pocket (15) by the driven sliding door opening / closing means (26) (28).

When the leading sliding door (10) reaches the doorway frame located on the opposite side of the door pocket (15), the leading sliding door (10) and other driven sliding doors (11) , The entire entrance (12) is closed.

Next, from this closed state, the sliding door (10) (1
To store 1) in the door pocket (15), the leading sliding door opening / closing means (29) is opened to store the leading sliding door (10) in the door pocket (15). The sliding door (11) is also accommodated in the door pocket (15) in a follow-up manner by the driven sliding door opening / closing means (27) (28).

When the sliding door is opened and closed, the driven sliding door (11) is supported by the leading sliding door (10) by the engagement of the guide roller (28) and the guide rail (25), and the driven side sliding door (10) is supported. The sliding door (11) can be opened and closed without any trouble even without the lower rail.

[0016]

EXAMPLE A first example of the present invention shown in FIGS. 1 to 6 will be described. Reference numeral 10 is a leading sliding door, 11 is a driven sliding door, and as shown in FIG. 1, the lengths D ₃ and D ₄ are formed to be slightly larger than 1/2 of the length D ₅ of the doorway 12.

Reference numeral 13 is an upper rail on the side of the leading sliding door 10,
As shown in FIG. 2, the doorway 12 and the door pocket 15 provided on the side of the doorway 12 are fixed over the entire length. Reference numeral 14 denotes an upper rail on the side of the driven sliding door 11, which is fixedly installed in a range in which the driven sliding door 11 is pulled out to the doorway 12, that is, a substantially intermediate position of the doorway 12 and the entire length of the door pocket 15.

Numeral 16 is a lower rail on the side of the leading sliding door 10 and a floor 17
On the surface, as shown in FIG. 3, it is arranged and fixed at a lower position of the upper rail 13 on the side of the leading sliding door 10 and having substantially the same length.

Reference numeral 18 denotes a lower rail on the side of the driven sliding door 11, which is the floor 1
On the 7th surface, it is arranged at a lower position of the upper rail 14 on the side of the driven sliding door 11 and is arranged only in the door pocket 15. It should be noted that the lower rail 18 is provided only in the entire length of the door pocket 15 or at least at the doorway of the door pocket 15 so that the rear portion of the driven slide door 11 engages with the lower rail 18 even when the driven slide door 11 is most pulled out. Good.

As shown in FIG. 4, door wheels 19 and 20 are provided on the support plate 2 above the leading sliding door 10 and the driven sliding door 11, respectively.
1 and 22, the door roller 19 on the side of the leading sliding door 10 is rotatably mounted on the upper rail 13, and the door roller 20 on the side of the driven sliding door 11 is rotatably mounted on the upper rail 14, respectively.
11 is adapted to move in a hanging door type.

As shown in FIG. 5, guide grooves 23a, 24 are formed on the lower surfaces of the leading sliding door 10 and the driven sliding door 11, respectively, which are groove forming members 23, 24 made of a material that withstands wear.
a is formed, and the guide grooves 23a and 24a are slidably fitted to the lower rails 16 and 18 to serve both as guides for the sliding doors 10 and 11 and to prevent them from coming off.

As shown in FIGS. 4 and 5, the driven sliding door 11
A guide rail 25 is provided in the lower part of the rear surface facing the leading sliding door 10 in the above, over a predetermined length in the moving direction of the door. The guide rail 25 is formed of a C-shaped material having an opening on the side facing the leading sliding door 10, and
Stopper 2 having rubber material or other cushioning material at both ends
It is closed by 6, 27.

The card rail 25 may be divided into a plurality of pieces in the longitudinal direction. Followed sliding door 11 of leading sliding door 10
As shown in FIG. 5, the lower portion of the side facing the guide roller 2 is rollably fitted to the guide rail 25.
8 is provided so as to project. The guide roller 28 is
A groove 28a is formed in the central portion of the outer periphery, and the groove 28a is rotatably fitted to the upper and lower front walls 25a on the opening side of the guide rail 25 so that the sliding doors 10 and 11 are engaged with each other. Does not come off.

The stoppers 26 and 27 and the guide roller 28 constitute an opening / closing means on the side of the driven sliding door. As shown in FIG. 1, the length D ₆ of the door pocket 15 is such that when both sliding doors 10 and 11 are housed and the driven sliding door 11 is pulled out as shown in FIG. It is set to a length that is necessary and sufficient for producing a running margin d in the door pocket 15.

In FIG. 4, reference numeral 29 shows an example of opening / closing means for the leading sliding door 10. The device 29 includes a motor 30 fixed at a predetermined position such as a top bag and a motor 30 at one end.
Bearings 3 connected to the
Screw shaft 3 supported by 1 and rotated by a motor 30
2 and the screw shaft 32 provided on the upper part of the leading sliding door 10.
And the driven element 33 screwed into the screw shaft 32. The screw shaft 32 is rotated in the forward and reverse directions by the forward and reverse rotation of the motor 30, and the driven element 33 screwed in the screw shaft 32 is moved leftward and rightward, thereby leading the sliding door. 10 is moved left and right.

As the opening / closing means 29 for the leading sliding door, in addition to the driving method using the motor and the screw shaft as described above, a method of driving the leading sliding door with an air cylinder,
The leading sliding door may be engaged with the belt, and the leading sliding door may be moved by rotating the belt in the forward and reverse directions by a motor, an air cylinder or the like.

Next, the operation of this embodiment will be described. As shown by the chain double-dashed line in FIG. 1, the double sliding doors 10 and 11 are door pockets 15.
From the opening state of the doorway stored in the
When closing the door, the motor 3 of the opening / closing means 29 for the leading sliding door
The leading sliding door 10 is pulled out from the door pocket 15 by rotationally driving 0 in the closing direction. As a result, the leading sliding door 10 has the upper and lower rails 1
Guided by 3 and 16, the doorway 12 is closed. At this time, the guide roller 2 provided on the leading sliding door 10
Since 8 moves in the guide rail 25 of the driven sliding door 11, the driven sliding door 11 stops at the position of the chain double-dashed line in FIG. 1 and remains in the door pocket 15.

When the leading end of the leading sliding door 10 reaches near the center of the doorway 12, the guide roller 28 thereof comes into contact with the stopper 26 which is an opening / closing means for the driven sliding door fixed to the leading end of the guide rail 25 of the driven sliding door 11.

When the leading sliding door 10 further moves in the closing direction, the driven sliding door 11 is pulled by the engagement of the guide roller 28 and the stopper 26 and pulled out from the inside of the door pocket 15.

The leading end of the leading sliding door 10 is the entrance 12
When reaching the side frame 43, the doorway 12 is completely closed by the double sliding doors 10 and 11, as shown by the solid line in FIG.
When the driven sliding door 11 is pulled out from the door pocket 15, the upper portion of the driven sliding door 11 is suspended and held by the upper rail 14, and the lower portion thereof has the guide rail 25 and the guide roller 28 engaged with each other. Even if the lower rail 18 on the side of the driven sliding door 11 is not in the entrance / exit 12, the driven sliding door 11 can be moved to the entrance / exit without any trouble. In this way, since the lower rail 18 on the side of the driven sliding door 11 is eliminated in the entrance / exit 12, the number of the lower rails of the entrance / exit 12 is only one, and compared to the case where two lower rails are provided in parallel in the entrance / exit 12 section. , It is easy to clean the dust collected on the lower rail part, there is no obstacle to prevent the sliding door from being closed, and there is an effect that there is less obstruction to traffic.

Next, the opening operation of both sliding doors 10 and 11 from the closed state of the doorway 12 will be described. When the motor 30 is rotated in the direction opposite to the closing operation, the leading sliding door 10 moves toward the door pocket 15. Then, until the tip of the leading sliding door 10 returns to the vicinity of the central portion of the doorway 12, the guide roller 28 moves in the guide rail 25, and the driven sliding door 1
1 does not move and remains at the position indicated by the solid line in FIG.

When the leading sliding door 10 is further moved in the direction of the door pocket 15 from the state where the leading sliding door 10 and the driven sliding door 11 are juxtaposed at the same position, the guide roller 28 causes the guide roller 28 to move.
The driven sliding door 11 is brought into contact with the stopper 27 at the rear portion of the back pocket 1
It is pulled in 5 directions, and both sliding doors 10 and 11 are in a parallel state and the door pocket 1
5 and is housed in the door pocket 15 as shown by the chain double-dashed line in FIG.

FIG. 6 shows an example in which the present invention is applied to a partition wall between a platform and a track. In FIG. 6, 3
4 is a platform, 35 is a partition wall that divides between the platform 34 and the track, 12 is an entrance for passengers on the platform side, 36 is an entrance for passengers on the platform side, 36a is its door, 37 is a train, 38 is a train An entrance / exit for passengers, 38a is the door, 39 is an entrance / exit of a crew member in a train, and 39a is the door.

In such a partition wall, the length D ₆ of the door pocket 15 may be about 1/2 of the length D _{3 at} the doorway 12 as long as the sliding doors 10 and 11 can be accommodated. Therefore, the adjacent passenger doorway 38 and the crew doorway 3
Even when the distance between the passenger compartment 9 and the passenger compartment 9 is short, the length D ₆ of the door pocket 15 can be shortened so that the passenger doorway 12 on the platform side and the passenger doorway 36 can be aligned with the positions on the train side facing each other. ..

FIG. 7 shows a second embodiment in which a platform-side entrance / exit constituting member is unitized. That is, the upper frame 4
0, the lower frame 41, and the side frames 42 and 43 are integrally connected to each other in a rectangular shape to provide a peripheral frame 44. The doorway 12 and the door pocket 15 are provided between the side frames 42 and 43. The upper rails 13 and 14 are installed and fixed in the upper part, and the opening / closing drive means 29 is also internally fixed.
The lower rails 16 and 18 are fixedly installed on the upper surface of 1, and the sliding doors 10 and 11 are suspended between the upper rails 13 and 14 and the lower rails 16 and 18, respectively.
Reference numeral 40a denotes a cover plate for concealing the top bag in which the opening / closing means 29 and the like are installed.

Then, the peripheral frame 44 and the opening / closing drive means 29, the sliding doors 10 and 11 and the like mounted in the peripheral frame are assembled into a unit in a factory, and the unit is conveyed to a site to which the peripheral frame should be attached. As shown in FIG. 7, the peripheral frame 44 is provided between the floor 45 and the ceiling 46 or the partition wall 35 constructed on site.
It is fixed by appropriate means such as bolts.

FIG. 8 shows a third embodiment of the present invention.
A pair of left and right sliding doors 10 and 11 similar to those of the first embodiment are provided, and both leading sliding doors 10 are abutted to each other to widen the opening width of the entrance / exit 12. The other structure is similar to that of the first embodiment.

FIG. 9 shows a fourth embodiment of the present invention.
A combination of the sliding doors 10 and 11 of the first embodiment and an ordinary large single-sliding door is used, and the leading sliding door 10 is abutted with a single-sliding door 47 to widen the entrance and exit width.

FIG. 10 shows a fifth embodiment of the present invention in which two or more sliding doors are arranged in parallel.
That is, the length D ₅ of the entrance / exit 12 is divided into three equal parts.
Three sliding doors 10a, 11a, 11b having ₇ are arranged side by side, and the leading sliding door 10a, the intermediate driven sliding door 11a and the rear driven sliding door 11b are connected in the same manner as described above.

In this embodiment, each sliding door 10a, 1
The upper rails 13a, 14a, 14b of 1a, 11b are installed up to the leading end of each sliding door. The lower rail 16 of the leading sliding door 10a is installed over the entire length of the entrance / exit, the lower rail of the intermediate driven sliding door 11a is not installed, and the lower rail of the rear driven sliding door 11b is set in the same manner as in the first embodiment. ing.

FIG. 11 shows a sixth embodiment of the present invention. In the first embodiment, the door 36b for the crew member on the platform side is formed by a sliding door and is also housed in the door pocket 15. It was done.

12 to 14 show a seventh embodiment of the present invention, in which the present invention is applied to a fence type sliding door.
In FIGS. 12 and 13, reference numerals 50 and 51 denote partition walls between the platform and the tracks, which are formed in a waist wall shape whose height is less than that of a human. 12 is a partition wall 50, 5
The doorway provided between 1 and 15 is a door pocket.

Reference numerals 10 and 11 are a leading sliding door and a driven sliding door, which are arranged side by side as in the above-mentioned embodiment, and the height thereof is the partition wall 50.
It is formed to the same height as 51. On the floor surface on which the leading sliding door 10 is located, the doorway 12 and the door pocket 15 are provided as in the above embodiment.
One rail 16 extending inside is provided, and the leading sliding door 10 is movably installed on the leading sliding door 10 by means of door rollers 52, 53 provided on the front and rear lower surfaces thereof.

A door pocket 15 is provided on the floor where the driven sliding door 11 is located.
The rail 18 is provided only in the inside, and the door roller 54 provided on the lower surface of the rear portion of the driven sliding door 11 is movably installed therein.

Reference numerals 25 and 25a denote guide rails provided on the back surface of the driven sliding door 11, that is, on the side surface of the line in the lateral direction, and are formed above and below the driven sliding door 11. Stoppers 26 and 27 similar to those described above are provided at both ends of the guide rails 25 and 25a, respectively.

28 and 28a are driven sliding doors 1 of the leading sliding door 10.
1 is a guide roller provided on the opposite surface, that is, on the side surface of the platform, the guide rail 25,
25a is fitted and connected.

Reference numerals 55 and 55a denote bearing rails provided on the side surface of the leading sliding door 10 over the entire length in the left-right direction thereof. The bearing rails are made of C-shaped steel as shown in FIG. The guide rails 25 and 25a are slidably fitted.

Reference numeral 57 is an opening / closing means for the leading sliding door 10, which is constructed as follows. A motor 58 and a ball screw 59 that rotates in the forward and reverse directions by the motor 58 are installed in the door pocket 15 in the moving direction of the sliding door. The ball screw 59 has a ball screw nut 60.
It is equipped by screwing. Further, a pantograph-shaped link mechanism 61 is configured as shown in the drawing, and its front end pin 62 is rotatably attached to the rear end of the leading sliding door 10 and the rear end pin 63 is rotatably attached to the inside of the door pocket 15 such as the motor 58. Further, the intermediate pin 64 is rotatably attached to the ball screw nut 60. Reference numeral 65 is a rotatable connecting pin.

A hole 66 is formed in the leading sliding door 10 into which the ball screw 59 is inserted when the leading sliding door 10 is closed. According to this embodiment, the motor 58 of the opening / closing means 57 is
By rotating the ball forward and backward, the ball screw 59 rotates,
The link mechanism 61 expands and contracts to open and close the leading sliding door 10.

By this opening and closing, the driven sliding door 11 also follows and opens and closes as in the above-described embodiment. Further, the driven sliding door 11 is
The front part thereof is the guide rails 25, 25a and the guide roller 2.
8, 28a supported by engagement with the rail 18 at the rear.
It is supported by a door roller 54 placed on top. Therefore, the rail at the entrance / exit of the driven sliding door 11 becomes unnecessary.
As a method of supporting the driven sliding door 11 on the leading sliding door 10, as shown in FIG.
In the side surface of No. 1, the supporting rail 55b may be provided over the entire length in the right direction, and the tip end thereof may be placed on the guide roller 28 provided on the side surface of the sliding door 10 on the leading side. As the opening / closing means for the driven sliding door, the stopper 2 fixed to both ends of the guide rail 25 as described above.
In addition to the configuration of 6, 27 and the guide roller 28, for example, a speed reducer or a cushion cylinder operated by the opening / closing means for the leading sliding door may be provided to open / close the driven sliding door in conjunction with opening / closing of the leading sliding door.

Although each of the above embodiments has been described with respect to the sliding door installed on the platform of the train, the sliding door device of the present invention may be used for a sliding door having a door pocket in a general building.

[0052]

As described above, according to the present invention, since the sliding doors are provided in parallel, the length of the door pocket is longer than that in the case where the doorway is opened / closed by one sliding door or two sliding doors are opened / closed separately. The length can be reduced to half or less, and the total length required for installing the sliding door can be reduced while securing the conventional entrance / exit width.

Therefore, the sliding door device can be installed in a small space even in a place with a small installation space.
In particular, on a platform where a train in which the doorway for passengers and the doorway for passengers are close to each other stops on a platform, even when a doorway with a sliding door is provided on a partition wall that separates the platform from the railroad track, the doorway device of the present invention is provided at the doorway portion of the passenger. Can be installed, and an entrance / exit for crew members can be provided in the vicinity of this to accommodate the situation.

Further, since the lower part of the driven sliding door is supported by the leading sliding door by the engagement of the guide rail and the guide roller, the lower rail of the driven sliding door becomes unnecessary. Therefore, only one lower rail at the entrance / exit is required to be installed on the leading sliding door side, and compared with the conventional one in which a plurality of rails are installed side by side,
Cleaning of dust accumulated on the lower rail part will be easier, obstacles will be less likely to move and the sliding door will not move easily, and there will be less obstruction to traffic.

Further, as opening and closing means for opening and closing the driven sliding door following the opening and closing of the leading sliding door, if stoppers are provided at both ends of the guide rail and the guide rollers are brought into contact with the stoppers, the driven sliding door is supported. The opening / closing means for the driven sliding door can be configured simply by providing the stopper with respect to the provided guide rail, and the opening / closing means can be configured easily and inexpensively.

[Brief description of drawings]

FIG. 1 is a schematic plan sectional view showing a first embodiment of the present invention.

FIG. 2 is a schematic plan sectional view showing an arrangement state of the same rail.

FIG. 3 is a schematic plan sectional view showing an arrangement state of the lower rail.

FIG. 4 is a front view of the same.

FIG. 5 is a partial side cross-sectional view showing a guide roller and a guide rail portion in both sliding doors.

FIG. 6 is a plan sectional view showing an embodiment in which the sliding door device of the present invention is applied to an entrance / exit of a partition wall of a platform.

FIG. 7 is a front view showing a second embodiment in which the constituent members of the present invention are unitized.

FIG. 8 is a schematic plan sectional view showing a third embodiment of the present invention.

FIG. 9 is a schematic plan sectional view showing a fourth embodiment of the present invention.

FIG. 10 is a schematic plan sectional view showing a fifth embodiment of the present invention.

FIG. 11 is a plan sectional view showing a sixth embodiment of the present invention.

FIG. 12 shows a seventh embodiment of the present invention and is a rear view seen from the line side.

FIG. 13 is a schematic plan sectional view of the same.

14 is a cross-sectional view taken along the line AA in FIG.

FIG. 15 is a sectional view showing another structure for supporting the sliding door on the driven side.

FIG. 16 is a schematic plan sectional view showing a conventional sliding door device.

FIG. 17 is a plan sectional view showing a sliding door device for a doorway in a partition wall of a conventional platform.

[Explanation of symbols]

 10, 11 Sliding door 12 Doorway 13, 14 Upper rail 15 Door pocket 16 Lower rail 25 Guide rails 26, 27, Stopper 28 which is an opening / closing means for the driven sliding door 28 Guide roller 29 Opening / closing means for the leading sliding door

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Rokuro Ando 20-12 Hanaomote-cho, Atsuta-ku, Nagoya-shi, Aichi Stock company Narita Works (72) Inventor Jozo Ishida Hanaomote-cho, Atsuta-ku, Aichi No. 20-12 Stock company Narita Manufacturing Co., Ltd.

Claims (4)

[Claims] 1. A plurality of sliding doors composed of a leading side and a driven side are arranged in parallel, and guide rails are provided in the moving direction of the sliding doors on the facing surfaces of one of the sliding doors adjacent to each other. A guide roller is provided on the facing surface of the sliding door, and the guide roller is fitted to the guide rail so as to be movable in the moving direction of the sliding door and not to be removed from the guide rail. A sliding door device, characterized in that both sliding doors are provided with an opening / closing means for a driven sliding door that opens and closes the driven sliding door following the opening and closing of the leading sliding door. 2. The leading sliding door opening / closing means for holding the sliding door according to claim 1 in a suspended manner by an upper rail, and for opening and closing the leading sliding door on the upper rail portion, the floor of the leading sliding door being provided. Is a sliding door device in which a leading-side lower rail is provided over the entire length of the doorway portion and the door pocket portion, or over the entire length of the door pocket portion, and a lower rail is provided on the floor of the sliding door on the driven side only over a portion or the entire length of the door pocket portion. .. 3. The sliding door according to claim 1, wherein the guide rail and the guide roller are provided at an upper portion and a lower portion of the sliding door, and the load of the driven sliding door is set by the upper or lower guide rail and the guide roller. With a structure that can be supported,
The opening and closing means for the leading sliding door is provided in the middle part in the height direction of the sliding door,
On the floor of the sliding door on the leading side, a lower rail is provided over the entire length of the doorway and a part or the entire length of the door pocket, and the floor of the sliding door on the driven side has a lower rail only over a portion or the entire length of the door pocket. Sliding door device provided. 4. The sliding door device according to claim 1, wherein the driven sliding door opening / closing means is provided with stoppers on both ends of the guide rail, with which guide rollers abut.