JP2003035064A - Serial double wing door device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a serial double wing door device which can be easily installed in a cabinet, a closet, or the like, makes both right and left doors displaceable in both indoor and outdoor directions, and allows the right and left doors to be individually opened/closed. SOLUTION: The serial double wing door device 1 is formed of a rail member 5, right and left door bearing travel bodies 7, 6, a left door 4, and a right door 3. The rail member 5 is installed in an opening portion of the cabinet or the like. The right and left door bearing travel bodies 7, 6 are accommodated in the rail member 5, and can travel along the same. The left door 4 is borne by a pair of rocking bearing pieces 16, 26 horizontally protruding from the left door bearing travel body 6. The right door 3 is borne by the pair of rocking bearing pieces 16, 26 horizontally protruding from the right door bearing travel body 7. When the door is pressed rearward, the door bearing travel body 6 (7) is moved in an opposite direction by a stroke corresponding to displacement of a door bearing point Y0 in a rail member direction due to rocking of the rocking bearing pieces 16, 26, and therefore the door can be pressed and moved in a direction orthogonal to the rail.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a series type double door device in a cabinet, a closet or the like, in which both the left and right doors are displaced in the indoor / outdoor direction so that the left and right doors fit on the same plane when closed. Regarding

[0002]

2. Description of the Related Art Conventionally, when a shoji is closed, left and right shoji are arranged side by side in series on the same plane, and when the shoji is opened, one of the shoji is moved to the inside of the room so as to be pulled by the other shoji. The so-called in-line type sash, which enables the opening of shoji doors, is provided on the market.

Several types of sashes of this type have been proposed. For example, in the serial sash shown in FIG. 13 (No. Sho 60-61375), a swinging arm 53 is provided in a door roller device 52 that is movable along a rail 51 for the inner shoji, and this swinging arm 53 The top and bottom ends of the inner shoji screen 50 are respectively supported by the tip portion, and on the other hand, a guide block 54 having guide grooves 54a formed along the outer oblique direction from the inner rail portion in plan view is installed at the end portions of the upper and lower frames. Then, when the inner shoji screen 50 is moved from the open state to the closing direction, the guide roller 53a provided at the tip of the swing arm 53 enters the guide groove 54a and is guided by the guide groove 54a to be guided by the inner shoji screen 54a. The door end side of 50 moves to a position on the same plane as the outer shoji 55.

In Japanese Utility Model Laid-Open No. 6-47558 and Japanese Utility Model Laid-Open No. 5-22790, curved guides are provided on the upper rail and the lower rail of the shoji 60 which are displaced in the indoor and outdoor directions, as shown in FIG. Rails 61 and 62 are provided, and when the shoji screen 60 is closed by running along the curved guide rails 61 and 62, the series sash is positioned on the same plane as the shoji screen on the other side in a serial position. Is proposed.

[0005]

However, the above-mentioned structures are all applied to the window sash, and the same structure is applied to a door such as a cabinet or a closet which does not have a frame member having a complicated cross-sectional shape such as a shape member. Can not be applied, and in the case of the conventional series type sash, the other sliding door cannot be opened without opening the sliding door that is displaced in the indoor / outdoor direction, so the door on any side can be opened and closed. There was a problem that the same structure could not be applied to doors such as cabinets and closets that can only be done by doing so.

Therefore, the main problem of the present invention is that it can be easily installed in a cabinet, a closet, etc., and that the doors on both the left and right sides are both displaced in the indoor / outdoor direction, and the doors on the left and right sides can be opened and closed arbitrarily. It is to provide a series type double door device.

[0007]

In order to solve the above-mentioned problems, the present invention according to claim 1 provides rail members installed on the upper surface and the lower surface of an opening, respectively, and accommodated in these rail members. The vehicle is supported by a left-door supporting traveling body and a right-door supporting traveling body that can travel freely along a rail member, and a pair of swing support pieces extending horizontally from the left-door supporting traveling body. A two-door series device including a left door and a right door supported by a pair of swing support pieces extending horizontally from the right door support traveling body, the series door apparatus being supported by the swing support pieces. When the door is pushed toward the front side or pulled toward the front side to open the opened door, the door is moved by an amount corresponding to the displacement amount of the door support point in the rail member direction due to the swing of the swing support piece. Supporting vehicle moving in opposite direction More, the series type two doors apparatus characterized by being enabled or pull pulling movable pushing moving the door rail orthogonal directions is provided.

According to a second aspect of the present invention, rail members installed on the upper surface and the lower surface of the opening, respectively, are housed in the rail members, and can travel along the rail members. A left-door supporting traveling body and a right-door supporting traveling body, a left-side door supported by a pair of swing support pieces extending in a horizontal direction from the left-door supporting traveling body, and the right-door supporting body. A series type double door device comprising a right door supported by a pair of swing support pieces extending horizontally from the traveling body, wherein the left door supporting traveling body and the right door supporting traveling body are respectively A traveling base is provided with a guide roller, and is freely movable in the rail member. The pair of swing support pieces are supported by the traveling base so as to be swingable about a vertical axis, and a pair of swing supports are supported. The extended parts of one side work together Members are connected to each other, and the interlocking operation member is supported so as to be slidable in the rail direction, is biased and held on one side in the rail direction, and swings around the vertical axis on the end side of the traveling base body. One end side in which the door displacement interlocking swing roller is supported by an movably supported arm piece, and the arm piece is engaged with the interlocking operation member to urge and hold the interlocking operation member. When located in the slide position, the swing roller for interlocking with door displacement is located at a displacement position deviating from the normal traveling position, and when the interlocking actuating member is in the other end side slide position against the biasing force, the door is moved. The displacement interlocking rocking rollers are respectively positioned at the normal traveling positions, and when the left door and the right door are flush with each other, the interlocking actuating member is biased and held at one end side slide. position In addition to being positioned, the swing roller for interlocking with the door displacement is located at a continuous displacement position from the normal traveling position of the rail member, and when one of the doors is pushed inward to open the door or pulled toward the front side. When it is moved, the swing support piece swings,
The interlocking operation member moves to the other end side slide position against the biasing force, and the door displacement interlocking rocking roller is positioned at the normal traveling position, so that the one side door is pushed in or pulled. An in-line double door device is provided which is characterized by being held in position.

According to a third aspect of the present invention, the door supporting traveling body is arranged at a position biased toward the opening end side not exceeding the width center point of the door, respectively. An in-line double door device is provided.

[0010] As the present invention according to claim 4, the door pivot point of the swinging support portions at the time of the closed state of the door and Y _0, when allowed front attracting the door, said at closed state of the door pivot support By setting the rail-direction distance between the rocking locus line of the one piece and the rail orthogonal direction line passing through the door pivot point Y ₀ of the rocking support piece and the moving distance of the door supporting traveling body to be the same. The series double door device according to any one of claims 2 and 3, wherein the door is movable in a direction orthogonal to the rail by pushing or pulling.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[First Embodiment] FIG. 1 is a transverse sectional view showing a door closed state of a series type double door apparatus 1 according to the present invention, and FIG. 2 is a transverse sectional view showing an open state of a left side door 4 thereof. is there.

The series type double door device 1 is used as an opening / closing door for a storage body 2 such as a cabinet or a closet, and when viewed from the outside, the right side door 3 and the left side door 4 are in series in the same plane when closed. It was designed to fit in. FIG. 2 shows a state in which the left side door 4 is opened, but any one of the right side door 3 and the left side door 4 in the closed state can be opened. That is, when the doors 3 and 4 are pushed inward to open, as shown by the chain line in the figure, the doors 3 and 4 do not move in the left-right direction and can be pulled to the other door 3 (4). It has been moved and then moved laterally.

The series type double door device 1 includes rail members 5 installed on the upper surface and the lower surface of the opening of the housing 2.
And a left-door supporting traveling body 6 that is accommodated in the rail member 5 and is allowed to travel along the rail member 5.
And the right-door supporting traveling body 7, and the left-door supporting traveling body 6
A pair of rocking support pieces 16 and 26 extended more horizontally
And a pair of swing support pieces 16 and 2 extending in the horizontal direction from the right door supporting traveling body 7.
And a right side door 3 supported by 6.

Since the left-door supporting traveling body 6 and the right-door supporting traveling body 7 have a bilaterally symmetrical structure with the center line of the storage body sandwiched therebetween, the left-door supporting traveling body 6 will be representatively described in detail below. .

The left door supporting traveling body 6 is, as shown in FIG. 4, an end portion traveling body 8 located on the end portion side of the left door 4.
And the intermediate traveling body 9 located in the middle of the left door 4 are connected to each other by a connecting member 10.
In this case, the position of the intermediate traveling body 9 is, as shown in FIG. 2, before the left door supporting traveling body 6 collides with the right door supporting traveling body 7 when the left side door 4 is opened. In addition, the left side door 4 is located at a position biased toward the end portion side of the storage body that does not exceed the width center line L of the left side door 4 so that the left side door 4 is fully opened.

First, as shown in detail in FIG. 5, the end traveling body 8 is provided with horizontal guide rollers 12A and 12B which are rotatable about a vertical axis with respect to the traveling base 11, and The rail member 5 includes vertical traveling rollers 13A, 13B, and 13C that are rotatable about a horizontal axis.
It can travel inside along the longitudinal direction of the member. As shown in detail in FIG. 9, the rail member 5 has a substantially U-shaped cross-section with an opening on one side, and is made horizontal by two projecting pieces 5a, 5a provided on the inner upper surface. The traveling rail groove 5b of the guide rollers 12A and 12B is formed, and the inclined rail forming member 30 by casting is attached to the inner surface side end of the rail member 5, and the inclined rail groove 5c continuous from the traveling rail groove 5b. Are formed. The traveling rail groove 5b constitutes the normal traveling position referred to in the present invention, and the inclined rail groove 5c constitutes the displacement position of the swing roller 14 for interlocking the door displacement described later.

The traveling base 11 extends to the outside from the side opening of the rail member 5 and, as shown in FIG. 3, the left door 4 via a door connecting member 31 having an L-shaped cross section and a connecting shaft 32. A swing support piece 16 for supporting the end of the traveling base 11 is swingably provided by a shaft 17, and on the end side of the traveling base body 11 is swingable around a vertical axis by a shaft / combined projection 20 to be described later. The door displacement interlocking swing roller 14 supported by the arm piece 15 is provided.

A plate-shaped interlocking actuating member 18 supported slidably in the direction of the rail member 5 is provided between the end traveling body 8 and the intermediate traveling body 9. . For the attachment, windows 18a and 18b that are long in the direction of the rail member 5 are formed at predetermined positions of the interlocking operation member 18, and the projection 19 formed on the traveling base 11 and the arm piece 1 are formed.
The shaft-combined projection 20 that also serves as the support shaft for the
A stopper ring is attached to the tip end of the protrusion 19 and the shaft-use protrusion 20 through 18b to prevent the protrusion from coming off. A spring 21 is interposed between the interlocking actuating member 18 and the traveling base 11, and the interlocking actuating member 18 is always biased and held to the end side traveling body 8 side.

The interlocking operating member 18 has a swing support piece 1
The extension portion 16a extending from 6 is pivotally supported by a shaft 22, and the door displacement interlocking rocking roller 1 is attached to a projection 18c with a window hole that is continuously provided from the end of the interlocking operation member 18.
One end slide position (rail end side) where the protrusion 15a of the arm piece 15 that supports 4 is engaged, the left side door 4 is closed, and the interlocking operation member 18 is biased and held. , The arm displacement 15 is urged in the counterclockwise direction in the figure about the shaft-cum-projection 20.
It is located in the inclined rail groove 5c (displacement position) continuous from b (normal traveling position), and the rocking support piece 16 is in a state of protruding to the outermost side. Since the left side door 4 is opened from this state as will be described later, when the door 4 is pushed in the opposite direction, the interlocking operation member 18 resists the urging force as the swing support piece 16 swings. When it is moved to the other end side sliding position, the left door supporting traveling body 6 is slightly moved and the door displacement interlocking rocking roller 14 is localized in the traveling rail groove 5b (normal traveling position). .

On the other hand, the intermediate traveling body 9 includes horizontal guide rollers 24A and 24B which are rotatable about a vertical axis with respect to the base body 23, and a vertical traveling roller 25A which is rotatable about a horizontal axis. , 25B, 25C, and can travel freely in the rail member 5 along the member longitudinal direction.

Similar to the end-side traveling body 8, the base member 23 extends outward from the side opening of the rail member 5 and, as shown in FIG. 3, has a door connecting member 31 having an L-shaped cross section. A swing support piece 26 that supports the middle point of the left door via the connecting shaft 32 is swingably provided by a shaft 33.

Further, the interlocking actuating member 18 which is disposed so as to straddle between the end side traveling bodies 8 has window holes 18d and 18e which are long in the direction of the rail member 5 at a predetermined position and is formed in the base body 23. The projecting portions 28, 29 are passed through the window holes 18d, 18e, and a stop ring is attached to the tip ends of the projecting portions 28, 29 to prevent them from being pulled out.

An extending portion 26a from the rocking support piece 26 is axially supported by a shaft 27 on the interlocking operation member 18, and the rocking support piece 26 shown in the drawing protrudes to the outermost side. When the swing support piece 16 is swung along with the pushing of the left side door 4 and the interlocking operation member 18 is slid to the intermediate portion side traveling body 9 side, the swing support piece 16 is interlocked with the swing movement of the swing support piece 16. Then, the swing support piece 26 swings.

Next, referring to FIGS. 7 and 8, the left door 4
The operating state of the left-door supporting traveling body 6 associated with the opening of the vehicle will be described. 7. FIG. 7 is an enlarged view showing the operation of the end side traveling body 8 part, and FIG. 8 is a diagram showing the operation of the entire left door supporting traveling body 6.

First, FIG. 7A is a state diagram of the end side traveling body 8 when the left side door 4 is already closed as described above. From this state, when the hand of the left side door 4 is held and the door 4 is pushed toward the side, as shown in FIG. 7 (B), the swing support piece 16 moves clockwise from the 7 o'clock position in the drawing. Start rocking. The swing support piece 16 is swung about a shaft 17 as a center of rotation,
When the interlocking operation member 18 slides to the side of the intermediate traveling body 9 against the urging force of the spring 21, the arm piece 15 that supports the door displacement interlocking rocking roller 14 is slid along with this slide and is shown in the figure. As the door displacement interlocking swing roller 14 is swung in the rotating direction, the rolling roller 14 starts rolling from a deep position of the inclined rail groove 5c, and the entire left door supporting traveling body 6 starts moving. At the same time, the interlocking actuating member 18 is slid toward the intermediate traveling body 9 side, so that the intermediate traveling body 9 side is also interlocked with the swing support piece 16 as shown in FIG. The swing support piece 26 starts swinging clockwise about the shaft 33 as a center of rotation in the drawing.

At this time, the door pivot point of the rocking support piece 16 in the state shown in FIG. 7A is set to Y _0, and the door of the rocking support piece 16 in the state shown in FIG. 7B is set. When the fulcrum point is Y ₁ , the horizontal distance L ₁ between the locus line centering on the axis 17 of the door fulcrum point Y ₀ and the door fulcrum point Y ₁ and the horizontal direction of the end traveling body 8 are set. Since it is set to have the same distance as the directional movement amount R ₁ (displayed by the movement amount of the horizontal guide roller 12A),
Always the door support points Y ₁ is adapted to position the rail perpendicular direction line on K _L passing through the door support points Y _0. That is,
The left door 4 does not move in the direction of the rail member 5 at all, but moves in the opposite direction.

After that, the state shown in FIG.
That is, the swing roller 14 for interlocking with the door displacement causes the inclined rail groove 5 to move.
Escape from c and lay with horizontal guide rollers 12A and 12B.
Up to the state of being aligned in the vertical direction
Operation and swing motion of the swing support piece 26 continue while interlocking
Then, the swing roller 14 for interlocking with the door displacement is tilted.
It came out of the rail groove 5c and was located in the traveling rail groove 5b.
Sometimes the left side door 4 is pushed to the farthest side,
The door displacement interlocking rocking roller 14 is provided on the traveling rail groove 5b.
By being held inside, the left side door 4 is kept in the pushing position.
Will be held. In addition, in the state shown in FIG. 7 (C)
Set the pivot point of the swing support piece 16 of_TwoAs above
The door pivot point Y₀The trajectory line centered on the axis 17 and the front
The door pivot point is Y_TwoHorizontal distance L with_TwoAnd for supporting the left door
Horizontal movement amount R of the traveling body 6_Two(Horizontal guide roller 12
(Displayed by the amount of movement of A) is the same distance as
Y _TwoIs the door support point Y₀Rail crossing direction line K passing through_LOn top
The relationship of placement remains unchanged. Figure 7 (C) state
And is pushed to a position where it can be pulled over with the right door 3.
After that, the left door 4 is moved laterally to open the door 4. Na
The left door 4 is located above the swing support pieces 16 and 26.
Since it is placed, a swing support for supporting the right side door 3 is provided.
Move to the fully open position without interfering with the holding pieces 16 and 26.
You can move.

The opening operation of the left side door 4 has been described in detail above, but the closing operation is performed by the opposite operation. Further, the right side door 3 is opened and closed by the same opening operation only by being symmetrical.

[Second Embodiment] Next, FIG. 10 and FIG.
The two-door series device 1B according to the second embodiment shown in FIG. 1 will be described in detail.

In the first embodiment, the rail member 5 is installed outside the housing 2, and the swing support pieces 16 and 26 are in the closed state when the doors are closed. , 2
6 has a structure that swings so as to approach the rail member 5 side, but in the second embodiment, the state where the swing support pieces 16 and 26 approach the rail member 5 is the door closed state, and the door pulling operation is performed. The swinging support pieces 16 and 26 swing toward the front side when they are brought close to each other.

FIG. 11 shows a drawing just corresponding to FIG. 8, but the basic structure can be exactly the same. Explaining only the difference, the swing support piece 1 according to the first embodiment
Although the bending shapes of 6 and 26 are in the opposite directions, that is, the rocking support pieces 16 and 26 according to the first embodiment are L-shaped to bend outward, the rocking support pieces 16 ′ according to the second embodiment are, Two
6 ′ has an L-shaped structure that bends inward. Structures other than the above are denoted by the same reference numerals, and description thereof will be omitted.

From the door closed state shown in FIG. 11 (A), when the hand of the left side door 4 is held by the hand and the door 4 is pulled toward the front side, as shown in FIG. 11 (B), the swing support piece 16 '. , 26 '
Starts oscillating in the clockwise direction from the position at 3 o'clock in the figure. The swing support piece 16 is swung, and the interlocking operation member 1
When 8 slides toward the intermediate traveling body 9 side against the urging force of the spring 21, the arm piece 15 supporting the swing roller 14 for interlocking with the door displacement oscillates in the clockwise direction in the drawing along with this slide. Is moved, the swing roller 14 for interlocking with the door displacement starts rolling from a deep position of the inclined rail groove 5c,
The entire left door supporting traveling body 6 starts moving.

Thereafter, until the state shown in FIG. 11C, that is, the state in which the door displacement interlocking rocking roller 14 comes out of the inclined rail groove 5c and is aligned with the horizontal guide rollers 12A and 12B in the rail direction, The swinging movement of the swinging support piece 16 'and the swinging movement of the swinging support piece 26' are continuously performed in conjunction with each other, and the swing roller 14 for interlocking with the door displacement is performed.
Comes out of the inclined rail groove 5c and is located in the traveling rail groove 5b, the left side door 4 is brought to the frontmost side, and the door displacement interlocking rocking roller 14 is held in the traveling rail groove 5b. As a result, the left door 4 is held at the pulling position. After the state shown in FIG. 11C is reached and the right door 3 is pulled to a position where it can be pulled backward, the left door 4 is moved laterally to open the door 4. In addition,
In all the states shown in FIGS. 11A to 11C, the door support points of the rocking support pieces 16 'and 26' are the same as being located on the rail orthogonal direction line K _L.

By the way, in the first and second embodiments, the right side door 3 and the left side door 4 are both displaced indoors and outdoors, so that the left and right doors can be arbitrarily opened and closed. However, it goes without saying that only one door can be displaced in the indoor / outdoor direction, and the other door can be a sliding door type that can move along the upper and lower rails.
As shown in FIG. 5, it can be applied to a structure in which a single door 35 is placed on the same plane as an adjacent wall surface or the like.

[0036]

As described above in detail, according to the present invention, it can be easily installed in a cabinet or a closet.
It is possible to provide a series type double door device in which both the left and right doors are displaced in the indoor / outdoor direction and the left and right doors can be arbitrarily opened and closed.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a door closed state of a series type double door apparatus 1 according to a first example of the present embodiment.

FIG. 2 is a cross-sectional view showing an open state of the left side door 4.

FIG. 3 is a view taken along the line III-III in FIG.

FIG. 4 is an enlarged view of a left-door supporting traveling body 6.

FIG. 5 is an enlarged view of an end side traveling body 8.

FIG. 6 is an enlarged view of an intermediate traveling body 9.

7 (A) to (C) are views showing an operation of the end side traveling body 8 when the door is opened.

FIG. 8 is a diagram showing an operation of the entire left door supporting traveling body 6 when the door is opened.

9 (A) is a plan view of an end portion, and FIG. 9 (B) is a sectional view showing a rail member 5.

FIG. 10 is a cross-sectional view showing a door closed state of the series type double door apparatus 1B according to the second embodiment.

11 (A) to (C) are diagrams showing the operation of the entire left door supporting traveling body 6 when the door is opened.

FIG. 12 is a cross-sectional view showing a state in which the door supporting traveling body according to the present invention is applied to a single door.

13A and 13B show an indoor / outdoor direction moving mechanism (part 1) of a conventional serial sash, (A) showing a moving state toward the indoor side, and (B) showing a closed state.

FIG. 14 is a lateral cross-sectional view showing an indoor / outdoor direction moving mechanism (No. 2) of a conventional series sash.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Serial double door apparatus, 2 ... Storage body, 3 ... Right side door, 4 ... Left side door, 5 ... Rail member, 5b ... Running rail groove, 5c ... Inclined rail groove, 6 ... Left door supporting running body, 7 ... right door supporting traveling body, 8 ... end side traveling body, 9 ... intermediate portion traveling body, 10 ... coupling member, 11/23 ... traveling base, 12A / 12B / 24
A ・ 24B ... Horizontal guide roller, 13A-13C ・ 25
A to 25C ... Vertical traveling roller, 14 ... Swing roller for interlocking with door displacement, 15 ... Arm piece, 16, 16 ', 26, 26'
... rocking support piece, 16a, 26a ... extension part, 18 ... interlocking operation member, 21 ... spring

Claims (4)

[Claims] 1. Rail members installed on the upper surface and the lower surface of the opening, respectively, and a left door support traveling body and a right door support housed in the rail members and capable of traveling along the rail members. Traveling body, a left door supported by a pair of swing support pieces extending horizontally from the left door supporting traveling body, and a pair extending horizontally from the right door supporting traveling body. A double door device in series consisting of a right door supported by a swing support piece of, and when the door is pushed toward the front side to open the door supported by the swing support piece, or toward the front side. When pulled, the door supporting traveling body moves in the opposite direction by an amount commensurate with the amount of displacement of the door supporting point in the rail member direction due to the rocking of the rocking supporting piece, thereby moving the door in the rail orthogonal direction. Pushable or pullable Series type double door device characterized by being 2. Rail members installed on the upper surface and the lower surface of the opening, respectively, and a left-door supporting traveling body and a right-door supporting body which are accommodated in the rail members and can travel along the rail members. Traveling body, a left door supported by a pair of swing support pieces extending horizontally from the left door supporting traveling body, and a pair extending horizontally from the right door supporting traveling body. A double door system in series comprising a right door supported by a swing support piece of the rail member, the left door supporting traveling body and the right door supporting traveling body each having a guide roller on a traveling base, and the rail member. The pair of swing support pieces are supported by the running base so as to be swingable about a vertical axis, and the extending portions of the pair of swing support pieces are interlocking operation members. Are connected to each other by The operating member is supported so as to be slidable in the rail direction, is biased and held on one side in the rail direction, and is supported by an arm piece that is swingably supported around the vertical axis on the end side of the traveling base body. The door displacement interlock when the displacement interlocking rocking roller is supported and the arm piece is engaged with the interlocking actuation member, and the interlocking actuating member is at the one-end slide position in which the interlocking actuation member is biased and held. The swing roller for the door is located at a displacement position deviating from the normal traveling position, and the swing roller for interlocking the door displacement is located at the normal traveling position when the interlocking operation member is located at the other end side slide position against the biasing force. When the door is closed, the left and right doors are flush with each other.
In order to open the door, the interlocking operation member is located at the one end side slide position where it is biased and held, and the door displacement interlocking rocking roller is located at a displacement position that is continuous from the normal traveling position of the rail member. When the door on one side is pushed toward the front side or pulled toward the front side, the swing support piece swings and the interlocking operation member slides on the other end side against the biasing force. A double door system in series, characterized in that the door on one side is held at a pushing-in position or a drawing-in position by moving to the position and the swing roller for interlocking with the door being positioned at the normal traveling position. 3. The serial double-door device according to claim 1, wherein the door-supporting traveling bodies are arranged at positions deviated to the opening end side not exceeding the width center point of the door. 4. A door pivot point of the rocking support piece when the door is closed is set to Y _0, and when the door is pulled toward the front side, a rocking locus line of the rocking support piece when the door is closed. By setting the rail-direction distance to the rail orthogonal direction line passing through the door pivot point Y ₀ of the rocking support piece and the moving distance to the door supporting traveling body to be the same, the door is orthogonal to the rail direction. The series type double door device according to any one of claims 2 and 3, which is capable of being pushed in or pulled in.