JP3594239B2 - Sliding door device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a sliding door device used for opening and closing an opening of a stationary furniture or a built-in storage unit.
[0002]
[Prior art]
As this type of sliding door device, for example, as described in Japanese Patent No. 3080349, when the opening is closed, the two doors abut each other to form a continuous plane and open the opening. Therefore, when one of the two doors is opened, a sliding door device is known in which one of the two doors moves parallel to the outside of the other door and the two doors overlap each other inside and outside. Has been.
[0003]
This type of sliding door device includes a first door suspended on a first guide rail and laterally moving along an inner movement path, and a laterally moving body engaged with a second guide rail parallel to the first guide rail. It is suspended via a parallel link mechanism, is configured to be able to move in parallel between the inside movement path and the outside movement path outside the inside movement path, and is attached to the inside movement path side by a spring. When the second door is urged and the two doors relatively move from a closed state in which the two doors abut each other in the inside movement path, a cam means for moving the second door into the outside movement path is provided. It is provided.
[0004]
[Problems to be solved by the invention]
Thus, in the conventional sliding door device described in the above publication, the first guide rail for suspending the first door is integrally provided below the second guide rail for suspending the second door. The upper guide rail for suspending both doors has a two-tiered structure. Therefore, the upper guide rail of the upper and lower two-stage structure hangs down on the upper side of the opening that is opened and closed by the sliding door device, and the effective height of the upper side of the opening is reduced, so that traffic or objects can pass. As a result, it was difficult to get in and out.
[0005]
[Means for Solving the Problems]
An object of the present invention is to provide a sliding door device that can solve the conventional problems as described above. The first door 1 suspended on one guide rail 50 and laterally moving on the inner movement path, and the parallel link mechanism 9 on the horizontal moving body 10 engaged with the second guide rail 51 parallel to the first guide rail 50 are provided. And is configured to be able to translate between the inside movement path and the outside movement path outside the inside movement path, and is urged toward the inside movement path side by a spring 42. When the second door 2 and the two doors 1 and 2 relatively move from a closed state in which they abut each other in the inner moving path, the second door 2 is moved in parallel to the outer moving path. A sliding door provided with a cam means 60 A location, the first guide rail 50, the outer side of the second guide rail 51, which is provided integrally so as to be positioned between said second guide rail 51 and the first door 1In the sliding door device, the first guide rail 50 is constituted by an upwardly open groove-shaped rail portion 55 formed outside a partition wall 51c between the first guide rail 50 and the second guide rail 51, and an upper end of the partition wall 51c. Portion is bent outward so as to cover above the grooved rail portion 55 of the first guide rail 50, and a vertical rail surface 56 is formed at the bent end thereof. At a position near the horizontal axis roller 17 fitted to the groove-shaped rail portion 55 of the one guide rail 50, a vertical axis roller 18 abutting on the vertical rail surface 56 is provided.It has a configuration.
[0006]
In implementing the apparatus of the present invention having the above-described configuration, the second guide rail 51 includes an upper grooved rail portion 52 that is open at the lower side, and a lower grooved rail portion 53 that is open at the upper side immediately below the upper grooved rail portion 52. The horizontal moving body 10 is provided at both ends in the direction of movement thereof with a pair of upper and lower concentric rails 52 and 53 fitted to the upper and lower grooved rails 52 and 53, respectively. The vertical link rollers 37 and 38 and the horizontal link roller 39 fitted to the lower grooved rail portion 53 are pivotally supported, and the parallel link mechanism 9 for connecting the horizontal moving body 10 and the door 2 includes: It can be composed of a pair of horizontal swing links 40, 41 in the movement direction, one end of which is supported by the support shaft 36 of the vertical shaft rollers 37, 38 at both ends of the horizontal moving body 10.
[0007]
Also, the second guide rail 51 is provided with projecting mounting plate portions 51a, 51b at the lower end level of the upper grooved rail portion 52 so that the upper grooved rail portion 52 is buried in the top plate 49. It can be configured to be attached.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to the accompanying drawings. In FIGS. 1 to 3, reference numeral 1 denotes a first door, 2 denotes a second door, and 3 denotes an opening which is opened and closed by both doors. It is. The first door 1 is provided with hanging roller units 4 and 5 at positions near both ends in the door movement direction on the inner side of the upper end thereof, and has a swinging motion member 6 near the center of the door movement direction on the inner side of the lower end thereof. Has been. A horizontal moving body 10 is attached to the second door 2 via a pair of bearing units 7 and 8 and a parallel link mechanism 9 inside the upper end of the second door 2 and near the center of the door moving direction inside the lower end. An anti-sway horizontal member 13 is attached via a link 11 and a link 12.
[0010]
The hanging roller units 4 and 5 of the first door 1 have the same structure, and a casing 14 buried flush with the upper end of the door 1 on the back side of the door 1 as shown in FIG. A movable body 15 fitted inside the casing 14 so as to be able to move up and down, a vertical position adjusting means 16 of the movable body 15, and a support rotatably supported by the movable body 15 so that the entire roller projects to the back side of the door 1. And a vertical axis roller 18 supported by the movable body 15 such that a part of the roller protrudes toward the rear side of the door 1 near the upper end of the door 1. The vertical position adjusting means 16 includes a screw shaft 19 having an upper end fixed to the movable body 15, and a rotation operating tool (nut) 20 screwed to the screw shaft 19.
[0011]
The horizontal member 6 for steadying the first door 1 is composed of one vertical shaft roller 25 with a flange. The support means for the flanged vertical shaft roller 25 includes a casing 21 buried on the back side of the door 1 and flush with the lower end of the door 1, and as shown in FIG. A movable member 23, which is urged in the ascending direction by a spring 22, and a bearing member 24 attached to the movable member 23 and extending horizontally inward below the lower end of the door 1. The attached vertical shaft roller 25 is supported at the upper end of the bearing member 24.
[0012]
The bearing units 7 and 8 of the second door 2 include a casing 26 buried on the back side of the door 2 and flush with the upper end of the door 2, and a bearing fitted inside the casing 26 as shown in FIG. 6. A vertical shaft 28 supported by a member 27 so as to be able to move up and down such that the upper end protrudes from the upper end of the door 2, a vertical position adjusting means 29 for the vertical shaft 28, and a position near the upper end of the door 2 on the rear side of the door 2. A vertical shaft roller 30 is supported by the casing 26 so that a part of the roller projects. The vertical position adjusting means 29 includes a lower end screw shaft portion 28a of the vertical shaft 28 and a rotary operation tool (nut) 31 that is screwed into the screw shaft portion 28a.
[0013]
As shown in FIGS. 4 and 6, the laterally moving body 10 of the second door 2 includes a pair of roller units 32 and 33 in the door movement direction and a band-shaped plate 34 that connects the roller units 32 and 33. The roller units 32 and 33 include a bearing member 35, a pair of upper and lower vertical shaft rollers 37 and 38 supported at upper and lower ends of a single vertical shaft 36 penetrating the bearing member 35, and a lower part of the bearing member 35. The supporting horizontal roller 39 is supported by the bearing member 35 so that a part of the roller protrudes. The upper vertical shaft roller 37 protrudes upward from the upper end of the bearing member 35 as a whole, and the lower vertical shaft roller 38 loosely fits into a notch recess formed at the lower end of the bearing member 35. I have.
[0014]
The parallel link mechanism 9 of the second door 2 is constituted by a pair of mutually parallel links 40 and 41 connecting the roller units 32 and 33 at both ends of the horizontal moving body 10 and the pair of bearing units 7 and 8. The outer ends of these links 40, 41 are supported on the upper ends of the vertical shafts 28 of the bearing units 7, 8, and the inner ends of the links 40, 41 are connected to the vertical shafts 36 of the roller units 32, 33. It is supported so as to be sandwiched between the vertical shaft roller 37 at the upper end of the vertical shaft 36 and the bearing member 35. As shown in FIG. 6, a torsion coil spring 42 for urging the links 40, 41 between the links 40, 41 and the bearing member 35 so that the laterally moving body 10 and the door 2 approach each other. Are mounted so as to be loosely fitted to the vertical shaft 36.
[0015]
The bearing unit 11 of the second door 2 includes a casing 43 buried on the back side of the door 2 and flush with the lower end of the door 1, and a bearing member fitted inside the casing 43 as shown in FIG. 6. A vertical shaft 46 supported to be able to move up and down and urged by a spring 45 in an ascending direction, and a casing 43 supported by a casing 43 such that a part of the roller projects toward the rear side of the door 2 near the lower end of the door 2. And a vertical axis roller 47 formed. The link 12 has the same effective length as the respective links 40 and 41 of the parallel link mechanism 9 and is inclined in the same direction. One end is attached to the lower end of the vertical shaft 46 and the lower end of the door 2 Extends horizontally inward at the bottom. The horizontal member 13 for steadying movement is composed of a vertical shaft roller 48 with a flange supported on the upper end of the link 12. The flanged vertical shaft roller 48 is the same as the flanged vertical shaft roller 25 of the oscillating movement 6 of the first door 1.
[0016]
As shown in FIG. 5, the top plate 49 of the opening 3 that is opened and closed by the first door 1 and the second door 2 is disposed so as to cover the upper side of both doors 1 and 2. A first guide rail 50 for suspending the first door 1 and a second guide rail 51 for suspending the second door 2 are arranged in parallel so that the first guide rail 50 suspends the first door 1 so as to be located inside the first door 1 below 49. It is arranged as follows. More specifically, the first guide rail 50 is integrally connected outside the second guide rail 51 so as to be sandwiched between the second guide rail 51 and the first door 1. In other words, the second guide rail 51 is formed by the rear side wall plate portion 54 of the lower open upper grooved rail portion 52 and the upper open lower grooved rail portion 53 located immediately below the upper grooved rail portion 52. Attachment overhanging plate portions 51a, 51b are provided continuously at both lower and inner sides at the lower end level of the upper channel-shaped rail portion 52. The side groove-shaped rail portion 52 is attached to the lower side of the top plate 49 in a state of being buried in the top plate 49, and the first guide rail 50 is provided outside the partition wall 51 c between the second guide rail 51 and the lower groove. A grooved rail portion 55 having the same level as the grooved rail portion 53 and having an open upper side is provided. The upper end of the partition wall 51c is bent outward so as to cover the grooved rail portion 55, and the grooved rail portion 55 Outside edge and abbreviation One vertical rail surface 56 is formed.
[0017]
As shown in FIG. 5, the floor plate 57 of the opening 3 is erected such that the bottom surface thereof is located at substantially the same level as the lower ends of the first door 1 and the second door 2. A lower guide rail 58 for steadying is embedded in the bottom surface near the front edge. The lower guide rail 58 for steadying is provided with a groove-shaped rail portion 59 which is open on the lower side.
[0018]
As shown in FIG. 5, the first door 1 is configured such that the supporting horizontal axis rollers 17 of the hanging roller units 4 and 5 are placed on the channel-shaped rail portion 55 of the first guide rail 50. The flanged vertical shaft roller 25 of the steady-state horizontal member 6 of the door 1 is fitted into the groove-shaped rail portion 59 of the steady-state lower guide rail 58, so that the straight line including the door 1 itself is formed. Is suspended so as to be able to reciprocate while maintaining a vertical posture along the inside movement path of the vehicle.
[0019]
The vertical axis rollers 18 of the hanging roller units 4 and 5 are adjacent to the vertical rail surface 56 of the first guide rail 50, and are located outside the first door 1 as will be described later. Are overlapped, and when pushed inward from the second door 2, the vertical shaft roller 18 can contact the vertical rail surface 56 and roll, so that even in such a state, the first door 1 can be smoothly moved. Can be moved. The vertical rail surface 56 of the first guide rail 50 may be formed below the support shaft of the vertical shaft roller 18.
[0020]
In addition, even if there is some variation in the interval between the grooved rail portion 55 of the first guide rail 50 and the steadying lower guide rail 58, the flanged vertical shaft roller 25 of the steadying horizontal member 6 is Since it can be moved up and down integrally with the movable body 23 and is urged upward by the urging force of the spring 23, the flange of the roller 25 comes into contact with the shoulders on both sides of the grooved rail portion 59, and the grooved shape is always formed. The state where the roller 25 is fitted to the rail portion 59 to a certain depth is maintained, and the roller 25 does not come off the groove-shaped rail portion 59 or slide on the bottom surface of the groove-shaped rail portion 59.
[0021]
As shown in FIG. 6, the second door 2 is configured such that a pair of upper and lower vertical shaft rollers 37, 38 of roller units 32, 33 at both ends of the laterally moving body 10 are grooved rail portions of the second guide rail 51. 52, 53, the supporting horizontal shaft rollers 39 of the roller units 32, 33 are mounted on the bottom surface of the lower channel-shaped rail portion 53, and The flanged vertical shaft roller 48 is fitted to the groove-shaped rail portion 59 of the lower guide rail 58 for steadying, thereby reciprocating while maintaining the vertical posture along the inner movement path in which the first door 1 moves. Hanged movably.
[0022]
Thus, the second door 2 suspended as described above is moved sideways by the parallel horizontal swinging motion of the links 40 and 41 of the parallel link mechanism 9 and the link 12 supporting the anti-swaying horizontal moving body 13. The movable body 10 and the oscillating horizontal moving body 13 can be moved in and out in parallel to each other, and are urged inwardly by the spring 42 that urges the links 40 and 41 of the parallel link mechanism 9. Therefore, as shown in FIG. 1, when the second door 2 is located at a position that does not overlap with the first door 1, the second door 2 is moved by the urging force of the spring 42. Is located in the inner moving path in which the first door 1 moves, and comes into a state of abutting against the first door 1. At this time, as shown in FIG. 6, the vertical axis rollers 30 of the pair of bearing units 7, 8 on the upper side of the second door 2 are attached to the vertical rail surface 56 of the first guide rail 50 which suspends the first door 1. Along with the contact, the vertical shaft roller 47 of the lower bearing unit 11 abuts on the front end face 57a of the floor plate 57 (including the case formed by the outer surface of the lower guide rail 58 for steadying), The second door 2 is accurately positioned in the inner movement path in which the first door 1 moves. Of course, a stopper that regulates the swing range of the links 40, 41, 12 may be provided in parallel to position the second door 2.
[0023]
As described above, when the first and second doors 1 and 2 are in the same inside movement path and are in the closed position where they abut each other, as shown in FIG. It will be closed by 1 and 2. Although not shown, the movement of the first door 1 in the direction away from the second door 2 from the closed state of the opening shown in FIG. And a stopper that abuts against the bearing member 35 of the horizontal moving body 10 to prevent the horizontal moving body 10 of the second door 2 from moving away from the first door 1. It is attached.
[0024]
As shown in FIG. 1, a cam means 60 is provided at the butting ends 1a and 2a of the doors 1 and 2 which abut each other when the opening 3 is closed. Has been. That is, the butting ends 1a and 2a of the two doors 1 and 2 have a wedge-shaped cross section so that the butting end 2a of the second door 2 overlaps the outside of the butting end 1a of the first door 1. The vertical shaft roller 30 of the bearing unit 7 of the second door 2 is formed so as to also protrude toward the butting end 2 a of the second door 2, and the wedge-shaped butting of the first door 1 is performed. The cam means 60 is constituted by the end portion 1a and the vertical roller 30. Thus, the first door 1 is moved toward the second door 2 from the state shown in FIG. 1 in which both the doors 1 and 2 are in the closed position, or the second door 2 is moved to the first door 1. When moved in the direction, the wedge-shaped butting end 2a of the second door 2 rides on the wedge-shaped butting end 1a of the first door 1 via the vertical shaft roller 30 of the bearing unit 7, The second door 2 is configured to move outward with a swing of the parallel link mechanism 9 and the link 12 against the urging force of the spring 42.
[0025]
Therefore, when the first door 1 is moved toward the second door 2 from the state shown in FIG. 1 in which the two doors 1 and 2 are in the closed position, the second door 2 is moved by the first door 1. Is displaced outward, the first door 1 moves inside the second door 2 that has been translated outward, and when the second door 2 is moved toward the first door 1 Is the outside of the first door 1 in a state where the second door 2 moves parallel to the outside of the first door 1, that is, the outside that is parallel to the inside movement path in which the first door 1 moves. You will have to move along the moving route. At this time, as shown in FIG. 7, the inward return force of the second door 2 due to the urging force of the spring 42 is such that the vertical shaft rollers 30 and 47 of the bearing units 7, 8 and 11 The inward pressing force from the second door 2 acting on the first door 1 is received by the first door 1 by abutting on the surfaces of the upper and lower ends, and each hanging roller unit The vertical shaft rollers 18 of 4 and 5 are in contact with the vertical rail surface 56 of the first guide rail 50, and the vertical shaft rollers 25 with the flange of the horizontal member 6 for steadying are fitted on the lower guide rail 58 for steadying. As a result, the first door 1 and the second door 2 can be smoothly moved by being received on the top plate 49 and the floor plate 57 side.
[0026]
As described above, the opening 3 can be opened by moving the first door 1 to the inside of the second door 2 or moving the second door 2 to overlap the outside of the first door 1. At this time, as shown in FIG. 3B, the horizontal members 6, 13 of the doors 1, 2 engaging with the common lower guide rail 58 for the anti-sway interfere with each other, and the doors 1, 2 are completely closed. In order not to hinder relative movement to a position overlapping with, horizontal swinging members 6 and 13 are provided near the center in the movement direction of the doors 1 and 2. Note that the horizontal members 6, 13 of the doors 1, 2 that engage with the common lower guide rail 58 do not prevent the doors 1, 2 from relatively moving to a position where they overlap each other. The position and the number are not limited. For example, in the region between the rear end opposite to the butting ends 1a and 2a of the doors 1 and 2 and the vicinity of the center, a plurality of anti-sway horizontal members are arranged in the moving direction. You can do it.
[0027]
In addition, even when the second door 2 is moved, the flanged vertical shaft roller 48 of the steady rest horizontal moving body 13 can move up and down integrally with the vertical shaft 46, and is urged upward by the urging force of the spring 45. Since the flanges of the rollers 48 abut against the shoulders on both sides of the grooved rail portion 59 and always maintain a state in which they are fitted to the grooved rail portion 59 at a constant depth, the lower groove of the second guide rail 51 is formed. Even if there is some variation in the distance between the shaped rail portion 53 and the steadying lower guide rail 58, the flanged vertical shaft roller 48 may come off the grooved rail portion 59, There is no sliding contact with the bottom.
[0028]
The configuration of the present invention is not limited to the above embodiment. For example, a spring that urges the second door 2 toward the movement path of the first door 1, that is, the inner movement path side, is also interposed between the link 12 of the horizontal member 13 for steadying movement and the bearing unit 11. It is possible to use not only a torsion coil spring but also a tension coil spring or a leaf spring. In addition, various modified examples described in Japanese Patent No. 3080349 can be adopted.
[0029]
Further, as shown in FIG. 8A, the lower end of the second door 2 has an abutting end 2a with the first door 1 and a position away from the end 2a, for example, a bearing unit 7 at the upper end. 8, links 12A and 12B for supporting the horizontal members 13A and 13B (vertical shaft rollers 48 with flanges) and their bearing units 11A and 11B are provided at the butting end 2a. The vertical shaft roller 47 of the bearing unit 11A has a bearing at the upper end such that the roller 47 and the butting end 1a of the first door 1 constitute the same cam means 60B as the cam means 60. A cam means for supporting the second door 2 to the outside of the first door 1 when the doors 1 and 2 move relatively close to each other is supported by two upper and lower stages (cams). Means 60, 60B) Can.
[0030]
In this case, the oscillating body 6 of the first door 1 has a rear end opposite to the butting end 1a with the second door 2 so as to allow the two doors 1 and 2 to overlap each other. Section. Further, in a state where the first door 1 and the second door 2 overlap with each other, since the first door 1 is prevented from swinging outward by the second door 2, as shown in FIG. 8B, The first door 1 does not have the steady-state movement member 6 that engages with the steady-state lower guide rail 58, and simply rolls into contact with the front end face 58 a of the lower floor plate 57 of the opening 3. The vertical axis roller 61 may be provided at one or more locations in the movement direction. For example, in the illustrated example, the vertical axis rollers 61 are disposed near both ends in the movement direction of the first door 1, but as in the above-described embodiment, the two doors 1 and 2 mutually move along the inner movement path. When the abutting end 2a of the second door 2 covers the front end (abutting end 1a) of the first door 1 when the abutting ends, the rear end of the first door 1 is provided. The vertical axis roller 61 may be provided only in the portion.
[0031]
【The invention's effect】
The sliding door device of the present invention can be implemented and used as described above, and according to the sliding door device of the present invention, the first door that does not translate inward and outward is suspended. The one guide rail is provided between the second guide rail and the first door outside the second guide rail that supports and guides the horizontally moving body that supports the second door that moves inward and outward through a parallel link mechanism. The two guide rails are arranged in parallel inside and outside the door on the upper side of the opening that is opened and closed by the sliding door device. The effective height of the opening can be kept high as compared with the conventional one that hangs largely in the opening, and traffic and articles can be easily taken in and out.Moreover, according to the configuration of the present invention, the upper end bent portion of the partition wall between the first guide rail and the second guide rail only serves to increase the overall strength of the first and second integrated guide rails. Without the vertical rail surface formed on the outside of the upper bent portion and the vertical axis roller provided on the first door so as to abut on this, the inward direction received from the second door overlapping the outside of the first door Can be reliably transmitted to the guide rail, and the first and second doors can be moved smoothly.
[0032]
According to the configuration of the second aspect, the horizontal moving body supporting the second door can be supported via the parallel link mechanism in a state where the horizontal moving body can smoothly move in a predetermined posture. As shown in FIG. 2, a light and simple structure in which two roller units each having a vertical axis roller and a horizontal axis roller are connected by a belt-like plate can be obtained. In addition, since a part of the support shaft constituting the parallel link mechanism can be shared by the support shaft of the vertical shaft roller, the structure can be simplified also in this respect. In this case, according to the configuration of the third aspect, while the second guide rail has a pair of grooved rail portions opposing each other vertically, the upper grooved rail portion is buried in the top plate. The guide rail can be attached, and the amount of hanging of the guide rail above the opening can be reduced.
[Brief description of the drawings]
FIG. 1A is a plan view omitting a guide rail in a state where an opening is closed, and FIG. 1B is a cross-sectional plan view of the same.
FIG. 2 is a front view in which a guide rail and a door itself are omitted in a state where an opening is closed.
FIG. 3A is a plan view omitting a guide rail in a state where an opening is opened, and FIG. 3B is a cross-sectional plan view of the same.
FIG. 4 is a front view showing a part of a horizontal moving body and a parallel link mechanism of a second door.
FIG. 5 is a partially cutaway longitudinal side view showing a first door and a support structure thereof.
FIG. 6 is a partially cutaway longitudinal side view showing a second door and its support structure.
FIG. 7 is a partially cut-away longitudinal side view showing each door and a support structure thereof in a state where a first door and a second door overlap inside and outside.
FIG. 8A is a cross-sectional plan view showing another embodiment, in which a guide rail in a state where an opening is closed is omitted, and FIG. B is a cross-sectional view showing still another embodiment; FIG. 4 is a cross-sectional plan view in which a guide rail in a state where an opening is closed is omitted.
[Explanation of symbols]
1 First door
1a Wedge-shaped butting end of first door (cam means)
2 Second door
2a Wedge-shaped butting end of second door
3 opening
4,5 Suspended roller unit
6 Horizontal motion body for steady rest
7,8 Bearing unit
9 Parallel link mechanism
10 Horizontal motion
11 Bearing unit
12 links
13 Lateral body for steady rest
17 Support horizontal axis roller
18 Vertical roller
25 Vertical shaft roller with flange
30 Vertical axis roller (cam means)
37,38 Vertical axis roller
39 Horizontal Axis Roller for Support
40, 41 links
42 torsion coil spring
47 Vertical Axis Roller
48 Vertical shaft roller with flange
49 Top Plate
50 First guide rail
51 Second guide rail
51a, 51b Overhang plate for mounting
51c Partition wall between first guide rail and second guide rail
52 Upper channel rail of first guide rail
53 Lower channel rail of the first guide rail
54 Rear wall plate
55 Channel-shaped rail of second guide rail
56 Vertical rail surface
57 floorboard
58 Lower guide rail for steady rest
60, 60B cam means

Claims (3)

A first door suspended on the first guide rail and laterally moving on the inner movement path, and a horizontal door engaged with a second guide rail parallel to the first guide rail suspended via a parallel link mechanism. A second door that is configured to be able to move in parallel between the inside movement path and the outside movement path outside the inside movement path, and is urged toward the inside movement path by a spring; A sliding door device provided with a cam means for translating the second door into the outer movement path when the two doors relatively move from the closed state in which they abut each other in the inner movement path. Wherein the first guide rail is a sliding door device which is integrally provided outside the second guide rail so as to be located between the second guide rail and the first door. Te, wherein the first guide rail, the second An upwardly open groove-shaped rail portion formed outside the partition wall between the guide rail and the guide rail, and an upper end portion of the partition wall is bent outward so as to cover above the groove-shaped rail portion of the first guide rail. A vertical rail surface is formed at the bent end, and the first door comes into contact with the vertical rail surface at a position near a horizontal shaft roller fitted to the grooved rail portion of the first guide rail. A sliding door device provided with a vertical axis roller . The second guide rail is configured such that a lower open upper grooved rail portion and an upper open lower groove groove portion directly below the upper grooved rail portion are integrally connected to each other by a rear wall plate portion. The horizontal moving body has a pair of upper and lower concentric vertical shaft rollers fitted to the upper and lower grooved rail portions, and a horizontal shaft roller fitted to the lower grooved rail portion at both ends in the movement direction. The parallel link mechanism, which is pivotally supported and connects the horizontal moving body and the door, is constituted by a pair of horizontal swing links in the moving direction, one end of which is supported by a vertical shaft roller supporting shaft at both ends of the horizontal moving body. The sliding door device according to claim 1. The sliding door device according to claim 2, wherein the second guide rail is provided with a mounting overhanging plate portion protruding at a lower end level of the upper channel-shaped rail portion.

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