JP2003138834A - Double sliding door device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance practicability of a double sliding door device whose first and second doors 1 and 2 are made flush when the door device is closed. SOLUTION: This double sliding door device is provided additionally with a second door push-out means 39 for moving the second door 2 to the outside of the first door 1 against urging force of springs 11b and 12b when the first and second doors 1 and 2 get relatively close to each other from a closed state in which front ends face each other; the means 39 is composed of a first door- side cam 41 and a second door-side cam follower lever 40; the cam 41 is composed of an inclined starting end 41a which is formed in a mounting member 6c of a roller unit 6 and a linear part 41b which is extended from the starting end 41a; the linear part 41b is formed of a surface of a belt-like plate 17 which is annexed to the first door 1; roller units 6 and 7 are mounted at both ends of the belt-like plate 17; the lever 40 is provided continuously from a parallel link 11; and a cam driven roller 40a acting on the cam 41 is journaled on a free end.

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 used for opening and closing an opening of a storage space.

[0002]

2. Description of the Related Art As a sliding door device of this type, for example, as described in Japanese Patent No. 3080349,
When the opening is closed, the two doors face each other at their front ends to form a continuous flat surface, and when either one of the two doors is opened to open the opening, the two doors are opened. There is known a sliding door device in which one of the doors moves in parallel to the outside of the other door and the two doors overlap each other inward and outward.

This type of sliding door device comprises a first door, a second door, and a guide rail, and the first door has a pair of moving directions for laterally engaging the guide rail. A roller unit is attached to the second door, and the second door is connected to a lateral moving member supported by the guide rail so as to be laterally movable via a parallel link so that the second door is outside the movement path of the first door. In addition to being able to move in parallel, a spring for urging the second door toward the movement path side of the first door is also installed, and the first and second doors are relatively close to each other from the closed state where the front ends face each other. When moving, second door pushing means for moving the second door to the outside of the first door against the biasing force of the spring is additionally provided.

[0004]

In the conventional sliding door device as described in the above publication, however, the second door pushing means second is formed at the tip of the first door. A wedge-shaped cam surface and a cam driven roller pivotally supported on the tip of the second door, and when the second door is pushed out of the first door, it is moved inward by the urging force of the spring. The second door to be moved was received by the surface of the first door via the cam driven roller. That is, a linear cam surface on which the cam driven roller on the second door side rolls is required on the surface of the first door, which allows the rolling trace of the roller on the surface of the first door. The result was that the design of the first door surface was restricted.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a sliding door device capable of solving the above-mentioned conventional problems, and the means will be referred to in the embodiments described later. When indicated by reference numerals, the first door 1 and the second door 2 and a guide rail 4 are provided, and the first door 1 has a pair of moving directions that engages with the guide rail 4 in a laterally movable manner. The roller units 6 and 7 are attached, and the second door 2 is
A lateral moving body 10 supported by the guide rail 4 so as to be laterally movable.
Are connected to each other via parallel links 11 and 12, and the second door 2 is configured to be movable in parallel to the outside of the movement path of the first door 1, and the second door 2 is also connected to the first door 1. When the first and second doors 1 and 2 relatively move toward each other from the closed state in which the front ends face each other, the biasing force of the springs 11b and 12b is provided. A sliding door device provided with a second door pushing means 39 for moving the second door 2 to the outside of the first door 1 against , A cam 41 provided in the first door 1 and a cam driven lever 40 provided in the second door 2, the cam 41 being the front end side roller unit facing the second door 2. 6, the inclined starting end portion 41a formed on the mounting member 6c and the inclined starting end portion 41a. The cam linear portion 41b is formed by the surface of the strip-shaped plate 17 attached to the inner side surface of the first door 1 and long in the moving direction. At the same time, the pair of roller units 6, 7 in the moving direction are attached to both ends of the strip plate 17,
The cam driven lever 40 is continuously connected to the front side parallel link 11 facing the first door 1, and has a free end to which a cam driven roller 40a acting on the cam 41 is pivotally supported. ing.

In carrying out the device of the present invention having the above-mentioned structure, the pair of roller units 6 and 7 in the moving direction of the first door 1 are attached to the surface of the belt-like plate 17, and the inclined start end portion 41a of the cam 41 is attached. Roller unit 6 equipped
Forms an overhanging portion 6d that fits within the thickness of the first door 1 on the mounting member 6c, and also overhangs the overhanging portion 6d.
It can be formed so that the inclined start end portion 41a of the cam 41 is inserted into the.

Further, as the guide rails, an upper guide rail 4 for hanging a door and a lower guide rail 5 for stopping a door are provided, and the first guide 1 is engaged with the upper guide rail 4. Upper moving direction A pair of roller units 6, 7
And a pair of roller units 8 and 9 in the lower moving direction that engage with the lower guide rail 5, and the cams 41 and 43 and the belt-shaped plate 17, respectively in the pair of roller units 6 to 9 in the upper and lower moving directions. 18 side by side, second door 2
Is provided on the lateral moving body 10 that engages with the upper guide rail 4 via parallel links 11 and 12 and with parallel links 13 and 14 that engage with the lower guide rail 5.
The cam driven levers 40 and 42 can be connected to both the upper parallel link 11 and the lower parallel link 13 on the front end side facing the first door 1.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION A preferred embodiment of the present invention will be described below with reference to the accompanying drawings.
Is a first door, 2 is a second door, and 3 is an opening that is opened and closed by both doors. An upper guide rail 4 is installed above the opening 3 along the door opening / closing direction, and a lower guide rail 5 is laid below the opening 3 along the door opening / closing direction. The first door 1 is hung on the upper guide rail 4 via a pair of upper roller units 6 and 7 attached to the inside of the door near the upper corners, and a pair of doors is attached to the inside of the door near the lower corners. Lower roller unit 8,
9 is engaged with the lower guide rail 5 so that it can be laterally moved while maintaining a vertical posture.

The upper end of the second door 2 is suspended from a lateral moving body 10 which is laterally supported by an upper guide rail 4 via a pair of upper parallel links 11 and 12 in the moving direction. By engaging the vertical guide rollers 5 and 16 axially supported above the free ends of the pair of lower parallel links 13 and 14 in the moving direction provided at the lower end of the second door 2 with the lower guide rail 5, Between an inner position (Fig. 1) that can move laterally while maintaining a vertical posture, and an outer position (Fig. 2) that can move laterally outside the movement path of the first door 1. It is supported so that it can move in parallel.

As shown in FIGS. 3A and 4A, the pair of upper roller units 6 and 7 of the first door 1 respectively include vertical shaft rollers 6a and 7a for steadying and horizontal shaft rollers 6b and 7b for supporting. The mounting members 6c and 7c are pivotally supported, and the mounting members 6c and 7c are mounted on both end surfaces of the strip-shaped plate 17 having a length extending over substantially the entire width of the first door 1, and the strip-shaped plate 17 is the first It is attached to the inner surface of the upper end of the door 1. Further, as shown in FIGS. 3B and 4B, the pair of lower roller units 8 and 9 of the first door 1 have the vertical shaft rollers 8a and 9a for steadying the mounting members 8b and 9a, respectively.
The support member 8b, 9b is attached to both end surfaces of a strip-shaped plate 18 having a length that extends over substantially the entire width of the first door 1 and is axially supported on the upper side of a bearing portion protruding toward the inside of the strip-shaped plate 1.
8 is attached to the inner surface of the lower end of the first door 1.

As shown in FIGS. 3A and 5A, the lateral moving body 10 is provided with roller units 20 and 21 at both ends of a channel member 19 whose front side is open. Therefore, each roller unit 20, 21 has a pair of upper and lower vertical shaft rollers 20a, 20b and 21a, 21b for steady rest.
And the horizontal shaft rollers 20c and 21c for supporting the mounting member 2
0d and 21d are pivotally supported, and these mounting members 20
d and 21d are fitted and fixed to both ends of the channel member 19.
Also, a pair of upper and lower vertical shaft rollers 20a, 2 for steadying
0b and 21a, 21b are one vertical support shaft 20e, 2
The inner ends of the upper parallel links 11 and 12 are supported by the vertical support shafts 20e and 21e between the upper and lower steady vertical shaft rollers 20a and 21a and the mounting members 20d and 21d, respectively. ing.

The upper guide rail 4 has a structure shown in FIGS.
As shown in FIG. 6, FIG. 8, and FIG. 10, each has a first rail portion 22 and a second rail portion 23 whose front side is open, and the first rail portion 22 is below the second rail portion 23. It is continuously connected to the front side of the half part. However, on the first rail portion 22, the vertical shaft rollers 6a, 7a for steadying and the horizontal shaft rollers 6b, 7b for supporting in the upper roller units 6, 7 of the first door 1 are laterally fitted. In the second rail portion 23, the steady vertical shaft rollers 20a, 20b and 21 in the roller units 20 and 21 of the lateral moving body 10 in a state where the lateral moving body 10 is built in.
a, 21b and supporting horizontal shaft rollers 20c, 21c are fitted laterally so that each roller unit 20, 2
The downward groove-shaped rail portion 23a into which the upper steady-state vertical shaft rollers 20a and 21a of 1 are fitted is fitted in the groove 25 formed on the lower surface of the top plate 24 that constitutes the opening 3.

The lower guide rail 5 is shown in FIGS. 3B, 5B,
As shown in FIG. 7, FIG. 9, and FIG. 11, a groove-shaped first rail portion 26 and a second rail portion 27, each of which is open at the lower side, are integrally connected in parallel in the front-rear direction. It is laid on the lower side of the front side of the floor plate 28 forming the part 5. Then, the first rail portion 26 is fitted with the vertical shaft rollers 8a, 9a for steadying in the lower roller units 8, 9 of the first door 1 so as to be able to move laterally, and the second rail portion 27 The vertical axis rollers 15 and 16 for steadying the free ends of the lower parallel links 13 and 14 of the second door 2 are laterally fitted to this.

As shown in FIG. 1B, a pair of upper parallel links 11 and 12 of the second door 2 and a pair of lower parallel links 1 of the second door 2.
3, 14 and those on the same side, the vertical interlocking shaft 2
9 and 30 are interlockingly connected to each other. More specifically, as shown in FIGS. 3, 4, 10, and 11, the pair of upper parallel links 11 and 12 includes the bearing member 3
A state in which the bearing members 31 and 32 are fixed to the upper ends of the vertical support shafts 11a and 12a supported by the first and second support shafts 32, and the bearing members 31 and 32 are attached to the inside of the strip-shaped plate 33 having a length substantially extending over the entire width of the second door 2. Then, the strip-shaped plate 33 is fitted into the recess formed on the inner surface of the upper end of the second door 2, and the strip-shaped plate 33 is attached to the inner surface of the upper end of the second door 2. In addition, torsion coil springs 11b and 12b for applying a rotational force in a predetermined direction to the vertical support shafts 11a and 12a are arranged in the bearing members 31 and 32, respectively. The springs 11b and 12b bias the upper parallel links 11 and 12 extending inward (toward the opening 3) with respect to the second door 2 so as to rotate outward. However, since the free ends of the upper parallel links 11 and 12 are axially supported by the lateral moving body 10 that fits into the upper guide rail 4, the springs 11b and 12b are consequently moved relative to the lateral moving body 10. The second door 2 is urged in the direction of moving inward (toward the opening 3). 11c, 12c
Is a stopper projecting from the upper ends of the bearing members 31 and 32, and limits the amount of parallel translation of the second door 2 to the outside through the upper parallel links 11 and 12.

The pair of lower parallel links 13 and 14 are vertical support shafts 13a and 14a supported by bearing members 34 and 35, respectively.
The bearing members 34 and 35 are fixed to the lower end of the second door 2 and are formed on the inner surface of the lower end of the second door 2 in a state where the bearing members 34 and 35 are attached to the inner side of the strip plate 36 having a length that extends over substantially the entire width of the second door 2. The strip-shaped plate 36 is fitted into the recessed portion formed in the recess, and is attached to the inner surface of the lower end of the second door 2. Also, each bearing member 3
Torsional coil springs 13b and 14b for applying a rotational force in a predetermined direction to the vertical support shafts 13a and 14a are arranged in the shafts 4 and 35. These springs 13b and 14b are springs 11b and 12b for biasing the upper parallel links 11 and 12, respectively.
Similarly, the second door 2 is biased inward (toward the opening 3) through the lower parallel links 13 and 14 in a direction in which the second door 2 is translated. 13c and 14c are bearing members 34,
A stopper provided at the lower end of 35 to limit the amount of parallel movement of the second door 2 to the outside through the lower parallel links 13 and 14.

Thus, the pair of upper bearing members 31, 3
The vertical support shafts 11a and 12a projecting downward from 2 and the vertical support shafts 13a and 14a projecting upward from the lower pair of bearing members 34 and 35 are located concentrically with each other and form a vertical pair. Support shafts 11a, 13a and 12a,
The upper and lower ends of the vertical interlocking shafts 29, 30 made of a pipe material are fitted to the shaft 14a so that they can be inserted and removed only in the axial direction.
And the lower parallel link 14 are interlockingly connected to each other by the vertical interlocking shafts 29 and 30. Incidentally, the bearing members 31, 3
2 and 34, 35 are embedded in the inner side surface of the second door 2, the vertical interlocking shafts 29, 30 are
Will be loosely fitted in the concave grooves 37, 38 formed on the inner surface of the.

Further, as shown in FIGS. 1 to 4 and 6, a second door pushing means 39 is additionally provided. As shown in FIGS. 1 and 3, the second door pushing means 39 moves the second door 2 when the first and second doors 1 and 2 relatively move toward each other from the closed state where the front ends face each other. Torsion coil springs 11b, 12b, 13b, 1 attached to
4b (see FIG. 4) is a means for moving the second door 2 to the outside of the first door 1 as shown in FIG. 2 against the urging force of the upper parallel links 11 and 12. , An upper cam driven lever 40, which is continuously provided from the free end of the link 11 adjacent to the first door 1 and has a cam driven roller 40a supported below the free end, and the upper cam driven lever 40 (the cam driven roller). 40a), the upper cam 41 provided on the upper end side of the first door 1 and the lower parallel links 13, 14 are continuously provided from the free end of the link 13 adjacent to the first door 1. And the lower cam driven lever 42 in which the cam driven roller 42a is pivotally supported on the free end upper side, and the lower cam driven lever 4
2 (cam driven roller 42a) so as to act on the lower door side of the first door 1 so as to act on the lower cam 43, the second door 2 is attached to the rear end side of the first door 1 that does not abut the first door 1. The auxiliary cam driven roller 44 and the first and second doors 1 and 2 are arranged at a position adjacent to the auxiliary cam driven roller 44 with the opening 3 closed (see FIGS. 1 and 3). It is composed of an auxiliary fixed cam 45.

The upper cam 41 has an inclined start end portion 41a for swinging the upper parallel link 11 outward, and a straight portion 41b extending from the inclined start end portion 41a to the vicinity of the rear end of the first door 1. The inclined starting end portion 41a
Is a cam groove formed on the upper surface of the mounting member 6c of the upper roller unit 6 on the side adjacent to the second door 2 among the upper roller units 6 and 7 of the first door 1. 41b is constituted by the surface of the strip plate 17 to which the upper roller units 6 and 7 of the first door 1 are attached. As shown in FIG. 6, the mounting member 6c of the upper roller unit 6 is a protrusion that is fitted into a recess formed in an upper inner corner of the first door 1 via a notch in the belt-shaped plate 17. The portion 6d is integrally formed, and the inclined start end portion 41a of the upper cam 41 is formed so as to enter the projecting portion 6d.

The lower cam 43 has an inclined start end portion 43a for swinging the lower parallel link 13 outward, and a linear portion 43b extending from the inclined start end portion 43a to the vicinity of the rear end of the first door 1. And the inclined starting end portion 43a.
Includes a cam groove formed on the lower surface of the mounting member 8c of the lower roller unit 8 of the first door 1 which is adjacent to the second door 2 among the lower roller units 8 and 9. The straight portion 43b is constituted by the surface of the strip plate 18 to which the lower roller units 8 and 9 of the first door 1 are attached. In addition, as shown in FIG. 7, the mounting member 8b of the lower roller unit 8 is fitted into a recess formed in a lower inner corner of the first door 1 via a notch of the strip plate 18. The protruding portion 8c is integrally formed, and the inclined start end portion 43a of the lower cam 43 is formed so as to enter the protruding portion 8c.

The auxiliary cam follower roller 44 is axially supported by a member 46 attached to the surface side of the strip-shaped plate 33 to which the pair of upper bearing members 31, 32 of the second door 2 are attached, and the auxiliary fixing. The cam 45 is arranged inside one end of the upper guide rail 4.

In the sliding door device having the above structure, the second door 2 is provided with the second rail portion 23 of the upper guide rail 4.
(The lateral moving body 10) and the second rail portion 2 of the lower guide rail 5.
7, the pair of upper and lower parallel links 11 to 14 can move parallel to the front and rear while maintaining the vertical posture, and can also move laterally along the upper and lower guide rails 4 and 5. The torsion coil springs 11b to 14b for urging the parallel links 11 to 14 urge the second door 2 into the opening 3.
By contacting the cam follower rollers 40a, 42a of the upper and lower cam follower levers 40, 42 in the second door pushing means 39 with the inclined start ends 41a, 43a or the straight portions 41b, 43b of the upper and lower cams 41, 43, respectively. , The position of the second door 2 in the front-rear direction is determined.

However, as shown in FIGS. 1 and 3, when the opening 3 is closed by the first and second doors 1 and 2, the second door 2 is the movement path of the first door 1. It is inside and is in a state of facing the first door 1. In this state, the upper and lower cam follower levers 40, 4 in the second door pushing means 39.
2 cam driven rollers 40a and 42a are provided for the upper and lower cams 4, respectively.
1, 43 are in contact with the ends of the inclined start ends 41a, 43a, and the position of the second door 2 in the front-rear direction is restricted to a position where the surface is flush with the first door 1. Actually, the position of the second door 2 in the front-rear direction is unstable due to play and bending of each part, while the first door 1 is arranged on the upper and lower guide rails 4 and 5 via the roller units 6 to 9. In the illustrated embodiment, the front end portion of the second door 2 facing the first door 1 has a position that is stable in the front-back direction. Positioning is performed by receiving the receiving portion 48 provided at the front end of the second door 2 with the receiving portion 47 provided at the front end facing the second door 2.
The rear end portion of the second door 2 has the auxiliary cam driven roller 44 provided at the rear end portion of the second door 2 and the rear side wall 4a of the upper guide rail 4 (rear side wall of the second rail portion 23). It is configured to be positioned by being received by.

The receiving portion 47 on the first door 1 side and the receiving portion 48 on the second door 2 side may have any configuration. For example, in the illustrated embodiment, the front end portion of the first door 1 and the front end portion of the second door 2 facing each other are referred to as the first door 1
Is formed in a stepwise cross-section so as to overlap each other in the front and rear with the front end of the inside of the door being inward, and the receiving portion 47 and the received portion 48 are integrally formed in each door 1, 2. A receiving member that protrudes inside the front end portion of the second door 2 is attached to the inner surface of the front end of the door 1 and the receiving portion 47 that receives the front end portion (received portion 48) of the second door 2 with this receiving material is provided. It can also be configured.

Further, in order to prevent relative movement of the first and second doors 1 and 2 in a state where the opening 3 is closed (see FIGS. 1 and 3), the doors 1 and 2 are prevented from moving relative to each other. , 2 may be arranged on the side of the opening 3 including the upper and lower guide rails 4 and 5, but in the illustrated embodiment, inside the upper roller units 6 and 7 of the first door 1. The projection 49 formed on the mounting member 7c of the roller unit 7 on the rear end side is the stopper surface 50 on one end of the upper guide rail 4.
And the auxiliary cam driven roller 44 provided at the rear end of the second door 2 comes into contact with an auxiliary fixed cam 45 provided inside the other end of the upper guide rail 4, thereby Positioning 2

To open the opening 3, the first door 1 is moved laterally toward the second door 2 as shown in FIG. 2A, or
As shown in B, the second door 2 is laterally moved to the first door 1 side. As shown in FIG. 2A, when the first door 1 is laterally moved to the second door 2 side, the inclined start end portions 41a and 43a of the upper and lower cams 41 and 43 on the first door 1 side are respectively moved upward and downward. Cam driven levers 40, 42 (cam driven rollers 40a, 42
via a), the upper and lower parallel links 11, 13 supporting the second door 2 are pushed together with the lateral moving body 10 in the lateral moving direction of the first door 1, and the upper and lower parallel links 11, 1 are also moved.
3 is rotated outward with respect to the lateral moving body 10.
At this time, the auxiliary cam driven roller 44 at the rear end portion of the second door 2 is in contact with the auxiliary fixed cam 45, so that the second door 2 rotates the outer parallel links 11 and 13 outward. And the auxiliary fixing cam 45 exerts an outward pushing force to the auxiliary cam driven roller 44, and moves a little backward (in the lateral movement direction of the first door 1), each of the torsion coil springs 11b. Each parallel link 11 against the biasing force of 14b
It moves in parallel to the lateral moving body 10 in parallel with the parallel swing motions of ˜14. The cams 41, 43, 45 are configured so that the movement of the second door 2 is performed without interfering with the front end portion of the first door 1 that moves laterally. , It is possible to enter the inside of the second door 2 which has been translated outward.

When the first door 1 moves into the inside of the second door 2 and moves laterally, the second door 2 has each torsion coil spring 1
The first door 1 moving inside by the urging force of 1b to 14b
, But the cam driven rollers 40a of the upper and lower cam driven levers 40 and 42 on the second door 2 side,
Since 42a is in contact with the straight portions 41b and 43b of the upper and lower cams 41 and 43 on the first door 1 side, the angles of the parallel links 11 to 14 with respect to the lateral moving body 10 are kept constant, and the second door A predetermined gap is secured between 2 and the first door 1,
The two never touch each other.

The entry stroke limit of the first door 1 to the inside of the second door 2 can be regulated by providing the both doors 1 and 2 with portions in contact with each other. In this embodiment, as shown in FIG. 2A, the front end of the first door 1 is configured to contact the member 46 that axially supports the auxiliary cam driven roller 44 on the second door 2 side. Another stopper member that replaces the member 46 may be provided so as to project inside the second door 2 or, although not shown, on the rear end surface of the first and second doors 2 and 1, 2. Among the protruding handles, the handle of the first door 1 is the second door 2
It can also be configured to abut the front end of the. When the second door 2 is pushed outward by the entrance of the first door 1 and moves in parallel, the parallel links 11 to 14 and the stoppers 11c to 14c on the second door 2 side contact, The second door 2 moves away from the first door 1 (the cam driven rollers 40a, 42a of the cam driven levers 40, 42 move inward from the straight portions 41b, 43b of the cams 41, 43).
It does not move too far.

Contrary to the above, when the second door 2 is laterally moved to the first door 1 side, the upper and lower cams 41 on the first door 1 side,
Inclination start end portions 41a and 43a of 43 rotate the upper and lower parallel links 11 and 13 to the outside with respect to the lateral moving body 10 via the upper and lower cam driven levers 40 and 42 (cam driven rollers 40a and 42a). become. At this time, the lateral operation force acting on the second door 2 is applied to each of the parallel links 11-14.
Acts to rotate the lateral moving body 10 outward.
Therefore, the second door 2 includes the torsion coil springs 11b to 14
The parallel links 11 to 14 move in parallel to the lateral moving body 10 in parallel with the parallel swing motion of the parallel links 11 to 14 against the biasing force of b, and laterally move outside the first door 1. The situation when the second door 2 laterally moves outside the first door 1 is the same as when the first door 1 laterally moves inside the second door 2 described above. The second door 2 laterally moves while maintaining a predetermined gap between them. As shown in FIG. 2B, the stroke limit in which the second door 2 overlaps the outside of the first door 1 is also regulated by the means described above.

As shown in FIG. 2A or FIG. 2B, from the state where the first door 1 and the second door 2 are overlapped inward and outward, that is, the state where the opening 3 is opened, the first door 1 is overlapped inward and outward. The second two doors 1 and 2 can also be laterally moved integrally. Also, the opening 3
When closing the door, either one or both doors may be laterally operated so as to return the first and second doors 1 and 2 which are overlapped inside and outside to the original positions. In this case, the upper and lower cam follower levers 4 on the second door 2 side immediately before the two doors 1 and 2 are separated from each other.
The cam driven rollers 40a, 42a of 0, 42 enter the inclined start ends 41a, 43a from above the straight portions 41b, 43b of the upper and lower cams 41, 43 on the first door 1 side, and the upper and lower parallel links 11, 13 Is rotated inward with respect to the lateral moving body 10 and the biasing force of each of the torsion coil springs 11c to 14c causes the second door 2 to start moving in parallel with respect to the lateral moving body 10 to move up and down. The cam driven rollers 40a, 42a of the cam driven levers 40, 42 are arranged to move the upper and lower cams 41, 4 respectively.
When the inner ends of the inclined start end portions 41a, 43a of the third door 3 are reached, the second door 2 is located in the movement path of the first door 1, and both doors 1,
As shown in FIG. 1, the two are connected in series with their surfaces flush with each other, and the opening 3 is closed.

As shown in FIGS. 3A and 4A, both ends of the upper guide rail 4 are provided with rail supporting means 5 provided inside the left and right side plates 51a and 51b forming the opening 3.
One rail support means 52 supported by 2, 53
The stopper surface 50 is formed on the other side, and the auxiliary fixing cam 45 is provided on the other rail supporting means 53.

The position of the spring for urging the second door 2 toward the movement path of the first door 1 and the kind of spring are not limited to those in the above embodiment. Further, although the hanging type sliding door device is shown, the present invention is also applied to the sliding door device of the type in which the first and second doors 1 and 2 are supported laterally by the lower guide rail. You can In this case, it is possible to connect the lower parallel links of the second door to each other with a lateral moving body that fits laterally to the lower guide rails, and to connect the upper parallel of the second door regardless of the door support method. Both the link and the lower parallel link can be connected by a lateral moving body that is laterally fitted to the upper and lower guide rails.

[0032]

The sliding door device of the present invention can be implemented and used as described above. According to the device of the present invention, both doors are within the movement path of the first door. When the front ends face each other and move relatively toward each other from the closed state, the cam driven lever connected to the parallel link supporting the second door at the inclined start end of the cam on the first door side is operated to Since the second door is moved in parallel to the outside, the second door moves inward by the biasing force of the spring at the cam straight line portion following the inclined start end portion of the cam on the first door side and the first door side is moved. The doors can be prevented from coming into contact with each other, and the two doors can be moved relative to each other in a state where a necessary gap is maintained between the first and second doors that overlap the inside and outside (front and rear). In other words, there is no inconvenience that the trail of the cam driven roller remains on the surface of the first door, and there is no need to provide a cam surface on the surface of the first door. Can be designed into

Moreover, since the inclined start end portion of the cam on the first door side is constructed by using one mounting member of the roller unit necessary for the first door side, it is a separate member. The number of parts and the number of assembling steps can be reduced as compared with the case of configuring. Further, the straight portion of the cam is not formed on the inner side surface of the first door itself, but is formed on the surface of a strip-shaped plate that serves as a mounting substrate for a pair of roller units in the moving direction required on the first door side. Therefore, it is possible to smoothly roll the second door side cam driven roller,
It is possible to prevent abrasion of the inner surface of the first door with time due to rolling of the roller, and to prolong the service life. Moreover, since a pair of roller units in the moving direction are attached to the strip plate in order to obtain the effect, the relative positions of the roller units are different from the case where the roller units are separately attached to the inner surface of the first door. The accuracy of the relationship can be improved and the mounting work can be done easily.

According to the second aspect of the invention, as compared with the case where the inclined start end of the cam on the first door side is formed so as to project outward from the inner side surface of the first door. The protrusion of the cam on the inner surface of the first door can be minimized to reduce the thickness of the entire first door including the cam, and the linear portion of the cam is substantially the first It can be configured with the surface of one thin strip plate directly attached to the inner surface of the door, and the configuration of the entire cam becomes simple.

According to the third aspect of the invention, when the first and second doors move relatively toward each other from the closed state where the front ends face each other, the upper and lower end portions of the second door are cammed. As it can be pushed out, the second door can be pushed out in parallel without any bias. Moreover, the cams required on the upper and lower sides of the first door can be simply configured with a small number of parts as described above, and the pair of roller units in the lower moving direction can be easily attached. Become.

[Brief description of drawings]

FIG. 1 is a plan view in which a guide rail is omitted in a state where an opening is closed, and FIG. 1B is a rear view of the same.

FIG. 2 is a plan view in which a guide rail is omitted when the first door is moved laterally to open the opening, and FIG. 2B is a plan view in which the second door is moved laterally to open the opening. It is a top view which abbreviate | omitted the guide rail in the opened state.

3 is a partially cutaway cross-sectional plan view showing details in the state of FIG. 1A, and FIG. 3B is a cutaway bottom view of the same portion.

4A is a partially cutaway vertical rear view showing details of the upper portion in the state of FIG. 1A, and FIG. 4B is a partially cutaway vertical rear view showing details of the lower portion.

5 is a partially cutaway vertical rear view showing an upper guide rail and a lateral moving member fitted to the upper guide rail, and FIG.
It is a partially cutaway longitudinal rear view showing details of the lower portion in the state of A.

FIG. 6 is a vertical cross-sectional side view near the upper front end of the first door.

FIG. 7 is a vertical cross-sectional side view of the vicinity of the lower portion of the front end.

FIG. 8 is a vertical cross-sectional side view near the upper portion of the rear end.

FIG. 9 is a longitudinal side view of the vicinity of the lower portion of the rear end of the same.

FIG. 10 is a vertical cross-sectional side view near the upper rear end of the second door.

FIG. 11 is a vertical cross-sectional side view in the vicinity of the lower rear end of the same.

[Explanation of symbols]

1 First Door 2 Second Door 3 Opening 4 Opened and Closed by Both Doors Upper Guide Rail 5 Lower Guide Rails 6, 7 Upper Roller Units 6a, 7a, 8a, 9a, 15, 16, 20a-21b
Steady vertical shaft rollers 6b, 7b, 20c, 21c Supporting horizontal shaft rollers 6c, 7c, 8b, 9b, 20d, 21d Mounting members 6d, 8c Mounting member projections 8, 9 Lower roller unit 10 Lateral moving body 11 , 12 upper parallel links 11a, 12a, 13a, 14a, 20e, 21e
Vertical support shafts 11b, 12b, 13b, 14b Torsion coil springs 11c, 12c, 13c, 14c Stoppers 13, 14 Lower parallel links 17, 18 Belts 20, 21 Roller unit 22 First rail part (upper guide rail) 23 Second rail part (upper guide rail) 24 Top plate 26 First rail part (lower guide rail) 27 Second rail part (lower guide rail) 28 Floor plate 29, 30 Vertical interlocking shaft 31, 32, 34, 35 Bearing Members 33, 36 Belt-shaped plate 39 Second door pushing means 40 Upper cam driven levers 40a, 42a Cam driven roller 41 Upper cams 41a, 43a Inclination start ends 41b, 43b of cams Straight portion 42 of cam Lower cam driven lever 43 Lower Side cam 44 Auxiliary cam driven roller 45 Auxiliary fixed cam 47 First door-side receiving portion 48 Second door-side covered member Only parts 49 projecting portions 50 a stopper surface 51a, the left and right side plates 52 and 53 the rail support means 51b opening

Claims (3)

[Claims] 1. A first door, a second door, and a guide rail, wherein a pair of roller units in a moving direction that engages with the guide rail in a laterally movable manner are attached to the first door. The second door is connected via a parallel link to a lateral moving body that is laterally movably supported by the guide rail, and the second door is configured to be movable in parallel to the outside of the movement path of the first door. Together with a spring for urging the second door toward the movement path side of the first door, when the first and second doors move relatively close to each other from the closed state where the front ends face each other, A sliding door device provided with a second door pushing means for moving the second door to the outside of the first door against the biasing force, wherein the second door pushing means is It consists of a cam on one door and a cam driven lever on the second door. The cam includes an inclined start end portion formed on the front end side mounting member of the roller unit facing the second door, and a linear portion extending from the inclined start end portion to the rear end side of the first door. The linear cam portion is formed on the surface of a strip plate attached to the inner surface of the first door and long in the moving direction, and the pair of roller units in the moving direction are attached to both ends of the strip plate, and the cam follower is attached. The lever is a sliding door device in which the lever is connected from the parallel link on the front end side facing the first door and a cam driven roller that acts on the cam is pivotally supported at the free end. 2. A pair of roller units in the moving direction of a first door is attached to a surface of the strip plate, and a roller unit having an inclined start end of the cam is attached to a member of the first door. The sliding door device according to claim 1, wherein an overhang portion that fits within the thickness is formed, and the inclined start end portion of the cam is inserted into the overhang portion. 3. An upper guide rail for hanging a door and a lower guide rail for steadying a door are provided as the guide rails, and the first door is moved upward to engage with the upper guide rail. A pair of roller units in a direction and a pair of roller units in a lower moving direction that engages with the lower guide rail are provided, and the cam and the strip-shaped plate are provided side by side in each pair of roller units in the upper and lower moving directions. The door is suspended from the lateral moving body that engages with the upper guide rail via a parallel link, and a parallel link that engages with the lower guide rail is provided. The upper parallel link and the lower parallel link on the front end side facing each other are provided continuously.
Sliding door device described in.