JP3057307B2 - Center hinge of interlocking folding door - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a center hinge of an interlocking folding door used to open and close a front opening of a storage space in furniture such as a clothes wardrobe and a closet.

[0002]

2. Description of the Related Art An interlocking folding door is shown in FIGS.
(A) As shown in the schematic diagrams of (B), a plurality of door pairs a,
b, c, the two doors d, d 'of each door pair a, b, c are pivotally connected to each other by a folding hinge e, and each two adjacent door pairs a, b, b ,
c, the upper and lower portions are pivotally attached to a common center traveling body f with a center hinge (not shown) so as to be freely foldable, and the outer doors d, d on the left and right side door pairs a, c.
The upper and lower portions of d 'are pivotally connected to the side traveling body g by side hinges (not shown), and are connected to horizontal guide rails i and j provided along both upper and lower opening lines on the front surface of a door mounting body h such as furniture. A plurality of door pairs a, b, and c are integrally opened and closed by the above-mentioned traveling bodies fg being engaged and guided so as to be able to travel freely.

In such an interlocking folding door, when the door pairs a, b, and c are opened from the closed position, the doors d and d 'are moved from the closed position to the folding hinges e and f.
A torque that is folded about the axis of a center hinge (not shown) must be applied to each door.

However, at the time of the opening operation, a necessary torque can be applied to the door pair at the end to be opened via the handle k. It is impossible to apply a high torque.

Therefore, a folding door having a door opening assisting device (see Japanese Patent Application Laid-Open No. 3-500433) has already been proposed. This door opening assist device is shown in FIG.
As shown in FIGS. 4 to 27, a common holding device l is guided movably along a guide rail (not shown).
, A driver p is attached to the doors n ₁ , o ₁ of two adjacent door pairs n, o, respectively attached by hinges m, m ′, and from the holding device l, parallel to the axis of the hinges m, m ′. , A lever r, r is attached to the rotation axis q so as to be rotatable around the rotation axis q, and one lever arm r ₁ , r ₁ of the lever r is connected to a follower p, The lever arm r ₂ , r ₂ is located in the turning range of p, and extends in the range of the adjacent doors n ₁ , o ₁ .

Therefore, in the opening assist device, when the doors n ₁ , o ₁ provided with the entrainers p, p have a predetermined turning angle or more,
A torque acting in the opening direction is applied via lever r to adjacent doors n ₁ , o ₁ , whereby a plurality of door pairs n, o
‥‥‥ is opened while being sequentially folded in one direction from the other. Further, by applying a torque in the closing direction to the door pair at the end, a torque acting in the closing direction is applied to the adjacent door via the lever r, whereby a plurality of door pairs n, o ‥‥‥ , And sequentially turns from one side to the other and is closed in a planar state.

[0007]

However, in the case of the above-described conventional opening assist device, the levers r and r are attached to the rotating shaft q extending from the holding device l, and the holding device l, the hinge m, m 'and the lever arm r of the lever r in order to smoothly transmit the torque between the doors n ₁ and o ₁ when the door is opened and closed.
₁ and r ₂ need to be extended for a long time, resulting in an increase in size. Further, the lever r is long exposed on the back side of the doors n ₁ and o ₁ , and when the door is opened, as shown in FIG.
_{Since a} gap is formed between the back surface of ₁ and o ₁ , clothes and the like may be trapped in the gap at the time of closing.

Further, in order to accurately transmit the required torque to the adjacent door at a predetermined opening angle of the door, the dimensional accuracy of the shapes and mounting positions of the entrainers p, p, the levers r, r must be increased. Therefore, there is a problem that the processing and the mounting work are troublesome.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the related art, and has two hinges formed on the left and right inside a common traveling body. Are foldably connected, and the door is opened and closed by the torque required for opening and closing given to the door in one door pair, so that the same torque is applied to the door in the other door pair. Are connected by a power transmission mechanism in the traveling body, and a transmission delay mechanism of a door opening / closing force between the two door pairs is provided in the power transmission mechanism. The hinge and the power transmission mechanism between the two hinges and the transmission delay mechanism of the door opening / closing force are all included in the traveling body, thereby enabling downsizing and weight reduction, eliminating the need for high precision, and improving workability. Attempting also improve mounting workability and is its purpose.

[0010]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention comprises a plurality of door pairs, wherein the doors of each door pair are pivotally connected to each other so as to be freely foldable, and two adjacent door pairs are provided. A center hinge of an interlocking folding door pivotally mounted on a common traveling body guided freely along a horizontal guide rail attached to a door mounting body so that the door can be folded. Is formed in a hollow body having an open front surface, and a pair of left and right hinges formed by arms and links disposed on both left and right sides of the inside thereof allows the doors of two adjacent door pairs to be foldable. Each arm of the two hinges is connected between two pairs of doors in the traveling body and is connected to each other by a power transmission mechanism that transmits a door opening / closing force to each other. , 2 We are trying to provide an interlocking folding door of the center hinge, characterized in that it comprises a transmission delay mechanism of the door opening and closing forces between the door pairs.

[0011]

In a planar closed state with a plurality of door pairs,
By applying a torque in the opening direction to the door in the door pair at one end via the handle, the hinge is rotated, the door is opened, and the door pair is folded. When the hinge is rotated by opening the door, the rotational force is transmitted via the power transmission mechanism to the other hinge to which the door of the other adjacent door pair is connected, By the transmission delay mechanism provided in the power transmission mechanism, the opening force of the door is not immediately transmitted to the other hinge, but is transmitted with a slight delay.

That is, when the door of one door pair is opened to a predetermined angle, the rotational force of one hinge is transmitted to the other hinge to rotate. As a result, a torque in the opening direction is given to the door in the other door pair, and the door is folded and opened. At this time, since the common traveling body is guided along the guide rail,
The adjacent door pair moves in the opening direction while being folded. In this manner, the plurality of door pairs are sequentially folded and opened from the opening operation side, are in a folded state on the side opposite to the opening operation side, and the doors are opened.

In the above-described open state, when a torque in a closing direction is applied to the doors of the one pair of doors via the handle, each traveling body is guided along the guide rail except for the other pair of doors. By applying a torque in the closing direction to the outer door in the door pair at the other end, the door is closed first, and thereafter, the door pairs are sequentially closed in a planar manner in the same manner as at the time of opening. Finally, the door pair on the operating side closes to a closed state.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, referring to a first embodiment shown in FIGS. 1 to 3, a traveling body 1 has left and right side walls 1a, 1b and a bottom wall 1a.
c, a back wall 1d and a top wall (not shown) are formed to be hollow with a front surface as an opening 1e, and a pair of vertical rollers 2, 2 and horizontal rollers 3, 3 are respectively supported on the top surface of the top wall, The vertical rollers 2 and 2 for rolling prevention and the horizontal rollers 3 for running;
3 is engaged so as to be able to travel along an upper guide rail 4 provided horizontally along an upper opening line of a door attachment body such as a clothes wardrobe, closet furniture or the like (not shown).

A pair of hinges 5, 6 are formed by arms 5a, 6a and links 5b, 6b on both left and right sides inside the traveling body 1. That is, the two arms 5a, 6a are formed in a substantially V-shape in plan view, and the bent portions are supported by the support shafts 7, 8 with both ends 5c, 5d, 6c, 6d facing inward. 1 bottom wall 1
c, and are rotatably supported on the top wall, while the links 5b, 6b are formed in a substantially U-shape in plan view, and the base ends 5e, 6e are respectively connected to the opening 1e of the traveling body 1. The left and right sides in the vicinity are rotatably supported by support shafts 9 and 10.

The ends 5d and 6d of the arms 5a and 6a protruding forward from the traveling body 1 and the links 5b and 6
The tip portions 5f, 6f of b are pivotally connected to the opposite ends of the two sockets 11, 12 by shaft pins 13 ', respectively, whereby a pair of hinges 5, 6 is formed.

The opposed doors 14a and 15a of two adjacent door pairs 14 and 15 are located in recesses 16 and 17 formed in the upper portion of the back surface at the opposite ends thereof, and the sockets 11 and 12 are embedded therein. It is fixed and is thereby foldably connected to the common vehicle 1 by the respective hinges 5, 6.

When a torque in the opening direction is applied to one of the two adjacent door pairs 14 and 15, that is, the door 14a in the illustrated example, and the door is opened in the direction of arrow A shown in FIG. 5 rotate, and the hinges 5 and 6 are connected to the traveling body of the arms 5a and 6a so that the rotational force is transmitted as an opening force to the door 15a of the other door pair 15 via the hinge 6. Ends 5c, 6 located within 1
The parts c are connected by a power transmission mechanism 18.

The illustrated power transmission mechanism 18 includes a connecting plate 18.
a, and two pins 18b and 18c protruding from both ends in the length direction thereof.
holes 18d, 18 penetrating both ends 5c, 6c of a, 6a
e, the power transmission mechanism 1
8, there is provided a transmission delay mechanism 19 in which the door opening / closing force between the two door pairs 14 and 15 is transmitted to each other at a slightly delayed timing without being immediately transmitted to the other door pair.
Is provided.

The illustrated transmission delay mechanism 19 is provided with holes 18d, 18 at the ends 5c, 6c of the arms 5a, 6a.
e is formed in a long hole, and when the door pair 14, 15 is closed, the pin and the long hole, that is, 18b, 18 as shown in FIG.
d and 18c and 18e are in a free state, and FIG.
As shown in FIG. 3, when one door 14a is opened by a predetermined angle, and as shown in FIG. 3, when the other door 15a is closed by a predetermined angle in the direction of arrow B, the pin 18
b and the long holes 18d and 18c and 18e are slidably connected to each other, and the opening force of one door 14a and the closing force of the other door 15a are transmitted to the hinges 5 and 6 via the power transmission mechanism 18 to each other. Thus, the opening torque is applied to the other door 15a and the closing torque is applied to the one door 14a.

In the second embodiment, as shown in FIGS. 4 to 6, the end portions 5c, 6a of the arms 5a, 6a are provided.
c, the large diameter holes 18f, 18g having the same inner diameter are opposed to each other, and the small diameter support shaft 20 having the head portion 20a is inserted into the large diameter holes 18f, 18g. The support shaft 20 is swaged through the washer 20b,
The power transmission mechanism 18 and the transmission delay mechanism 19 are formed in a state where the power transmission mechanism 18 is prevented from falling off from the gears 8f and 18g.

Therefore, in the state of FIG. 4 in which the two door pairs 14 and 15 are closed, the support shaft 20 is held free in the large diameter holes 18f and 18g. As described above, by opening one door 14a by a predetermined angle, the doors 14a are sandwiched between the opening edges of the large-diameter large holes 18f and 18g, and the hinges 5 and 6 are connected to each other. Others are the same as in the case of the first embodiment described above.

The third embodiment will be described below with reference to FIGS. 7 and 8. Here, the pair of hinges 5 and 6 are configured as follows. Each of the two arms 5a, 6a, which are bent into a substantially L-shape in plan view and whose ends 5c, 6c are pivotally connected by pins 21, and the doors 14a, 15a of two adjacent door pairs 14, 15, respectively. The front end is pivotally attached to the opposite end of the two sockets 11 and 12 on the back surface of the opposite end and fixed to the upper portion by screws 22 # so that the front end can be pivoted in the left-right direction by the pin 23. Two arms 5g, 6g and the other ends 5d, 6 of the arms 5a, 6a
d and two pins 2 at the symmetrical ends of the sockets 11 and 12
It is formed by two links 5b, 6b pivotally connected at 4, 25, and includes a bent portion of each of the arms 5a, 6a and a substantially intermediate portion in a longitudinal direction of each of the arms 5g, 6g. Is pivotally connected with a pin 26.

The power transmission mechanism 18 of the hinges 5 and 6 has a rear end of each of the arms 5g and 6g, a rear end pivotally connected by a pin 27, and a front end in a vertically overlapping state. So that the substantially middle portion in the longitudinal direction is
2 which is pivotally connected to a top wall and a bottom wall 1c by a support shaft 28.
And two interlocking arms 18a, 18a
Large diameter holes 18f, 18g respectively penetrating the front ends of a, 18a
And a small-diameter slide pin 20 slidably inserted therethrough.

The transmission delay mechanism 1 for the hinges 5 and 6
Reference numeral 9 denotes a slide pin 20 extending in the front-rear direction between the left and right arms 5g and 6g, which is located on the top wall and the bottom wall 1c of the traveling body 1 and extends through the long hole 19a in the front-rear direction. It is formed by being slidably inserted.

In the third embodiment, a plurality of door pairs 1
When the doors 4 and 15 are closed as shown in FIG. 7, the slide pin 20 is located at the center of the large-diameter holes 18f and 18g of the interlocking arms 18a and 18a, and is in a free state. Door pair, door 15a of door pair 15 in the illustrated example
Is opened, the hinge 6 is rotated, but until the door 15a is opened by a predetermined angle, one of the large-diameter holes 18f, 18g and the diameter of the small-diameter slide pin 20 cause one of the hinges 6 to rotate. The rotational force of the interlocking arm 18a is not transmitted to the other interlocking arm 18a.
Are opened by the angle shown in (1), the large-diameter large holes 18f, 18g of the both interlocking arms 18a, 18a are displaced, thereby being sandwiched between the opening edges of the large-diameter large holes 18f, 18g.

Therefore, when the door 15a is opened by a predetermined angle or more, the slide pin 20 slides rearward from the front end along the long hole 19a while being sandwiched between the opening edges of the large diameter holes 18f and 18g. The rotational force of one interlocking arm 18a is transmitted to the other interlocking arm 18a, whereby the other hinge 5 is rotated, thereby applying a torque in the opening direction to the door 14a. When closing the doors 14a and 15a, the slide pin 20 slides forward from the rear end of the elongated hole 19a, and the door closing force is transmitted between the hinges 5 and 6.

9 and 10, a pair of left and right hinges 5 and 6 are located in the front end opening 1e of the common traveling body 1,
The sockets 11, 12 are formed by arms 5 a, 6 a and links 5 b, 6 b connecting the opposite ends of the sockets 11 by pivoting.

On the other hand, the power transmission mechanism 18 of the hinges 5 and 6
Are two interlocking arms 18 bent in a substantially U-shape in a plane.
a, 18a, each end of which is vertically overlapped at a central portion in the traveling body 1, and near which one end is supported by the top wall and the bottom wall 1c of the traveling body 1 by supporting shafts 7, 8. By supporting, the other end extending left and right symmetrically from the traveling body 1 and the symmetrical end of the sockets 11 and 12 are provided in the both interlocking arms 18a and 18a.
The links 18h, 18h are linked to each other. Further, the slide pins 20 provided at one end of both the interlocking arms 18a, 18a and projecting from one of them are engaged with a slide groove 29 provided on the other so as to be loosely fitted. It is formed together.

Further, the transmission delay mechanism 19 forms the slide groove 29 in the longitudinal direction of the interlocking arm 18a and has a width wider than the diameter of the slide pin 20 by an appropriate dimension, as described above. In the loosely-fitted state, the rotational force between both interlocking arms 18a, 18a is transmitted with a time delay.

FIGS. 11 and 12 show a fifth embodiment. In this case, the power transmission mechanism 18 is connected to the interlocking arm 1.
8a and 18a and sockets 11 and 12 are connected to slide mechanism 3
It is formed by connecting by 0 and 30.

That is, guide holes 30a, 30a projecting symmetrically from both sockets 11, 12 are provided with guide holes 30 long in the width direction of doors 14a, 15a in door pairs 14, 15.
b, 30b are formed, and rollers 30c, 30c pivotally supported at the ends of the interlocking arms 18a, 18a are rotatably engaged with the guide holes 30b, 30b. And
Except for the slide mechanisms 30, 30, the configuration is the same as that of the fourth embodiment.

The sixth embodiment shown in FIGS. 13 and 14 will be described below. The left and right hinges 5, 6 have a substantially middle portion in the longitudinal direction of the arms 5a, 6a formed in a substantially L-shape in a plane. At the front end opening edge of the traveling body 1, it is pivotally supported by the support shafts 7 and 8 inwardly by a predetermined dimension from the left and right end portions thereof, and at the opening edge of the traveling body 1,
The base ends of the links 5b, 6b are pivotally connected to the outer ends of the shaft supporting portions of the arms 5a, 6a by pins 9, 10, and the tips of the arms 5a, 6a, the links 5b, 6b are connected to the socket 1.
It is formed by pivotally connecting each of the opposite ends of the first and second members by a pin 13.

On the other hand, the power transmission mechanism 18 is configured as follows. An inner end of each of the interlocking arms 18a, 18a is pivotally supported on the traveling body 1 by a support shaft 31 so that the bent intermediate portion of the interlocking arms 18a, 18a formed symmetrically as a substantially U-shaped plane is pivotally supported on the traveling body 1. One of the two ends is provided with a slide groove 29 in the longitudinal direction.
The slide pin 20 protruding from the other side is slidably engaged with the slide groove 29.

A slide groove 32 is formed in the outer end of each of the interlocking arms 18a, 18a in the longitudinal direction, and a slide pin 33 protruding from the base end of each of the arms 5a, 6a.
Is slidably engaged with the slide groove 32.

The slide grooves 29, 3
The width of each of the scribbing pins 20, 3
The transmission delay mechanism 19 is configured such that the rotation force between the hinges 5 and 6 is transmitted to each other with a time delay by forming the rotation force between the hinges 5 and 6 wider than the diameters of the hinges 1 and 33 by an appropriate dimension.

In the case of the seventh embodiment shown in FIGS. 15 to 17, a pair of left and right hinges 5, 6 are provided with arms 5a, 6a and links 5b, 6b as in the case of the first embodiment described above.
Here, the support shafts 7, 8 are attached to the bottom wall 1c of the traveling body 1 in a state where the base ends of the pair of left and right interlocking gears 34, 35 are vertically overlapped with the arms 5a, 6a. The power transmission mechanism 18 is configured so as to be rotatably supported by each other and to be meshed with each other.

Further, slide pins 36 and 37 are vertically fixed to the opposite ends 5c and 6c of the arms 5a and 6a. On the other hand, the two interlocking gears 34 and 35 are provided with long slide holes 38 and 39 along a circumferential line centered on the support shafts 7 and 8, respectively. The pins 36 and 37 are slidably engaged with each other, so that the door opening / closing force between the hinges 5 and 6 is transmitted with a delay to each other within the effective length of the slide holes 38 and 39. Thus, the transmission delay mechanism 19 is configured.

In the case of the eighth embodiment shown in FIGS. 18 and 19,
The pair of left and right hinges 5, 6 are shown in FIGS. 7 and 8 and are formed in the same manner as in the third embodiment described above, but the power transmission mechanism 18 for the door opening / closing force between the hinges 5, 6 is provided.
Is configured as follows.

One end of the interlocking arms 18a, 18a is pivotally attached to the rear ends of the left and right arms 5g, 6g by pins 27 so as to be rotatable.
The two interlocking arms 18 are arranged so as to have a substantially inverted eight-shape in plan view.
a and 18a are pivotally supported on the top wall and the bottom wall 1c of the traveling body 1 by the support shaft 40 so as to be rotatable together with the interlocking gears 34 and 35, so that the two interlocking gears 34 and 35 can be rotated.
5 are meshed with each other.

The transmission delay mechanism 19 is provided at a substantially intermediate portion in the length direction of the interlocking arms 18a, 18a.
Each of the slide holes 41 is provided with a slide protruding from each of the interlocking gears 34 and 35 so as to be slidable in the length direction of the slide hole 41 on an imaginary circumferential line centered at 0. The pin 42 is engaged.

Therefore, when the two door pairs 14 and 15 are closed, as shown in FIG. 18, the slide pins 42 and 42 are located at the symmetrical ends of the slide holes 41 and 41, respectively. The door opening / closing force between the hinges 5 and 6 is not transmitted to each other, but one door pair, that is,
In the illustrated example, the door 15a of the door pair 15 is opened and operated.
When 5a is opened to the angle shown in FIG. 19, the slide pin 42 abuts against the opposite end of the slide hole 41,
The turning force of one hinge 6 due to the opening movement of the door 15a is transmitted to the interlock gear 35 via the interlock arm 18a and the slide pin 42.
And the interlocking gear 34 and the interlocking arm 1
By being transmitted to the other hinge 5 via 8a, torque in the opening direction is transmitted to the door 14a of the other door pair 14. When the doors are closed, torque in the closing direction is transmitted from the door 14a of the door pair 14 to the door 15a of the door pair 15.

Here, as shown in FIG. 20, a pair of left and right interlocking gears 43 each having a substantially fan-shaped planar shape and having tooth portions 43a and 44a formed on the peripheral surface of the tip so as to be able to mesh with each other with play. , 44, between the pair of left and right arms 5g, 6g, the right and left support shafts 4 in the traveling body 1.
5 for opposing pivoting, which allows the teeth 43
a, 44a, and the both interlocking gears 43,
44 at the rear end of both arms 5g and 6g.
7, the power transmission mechanism 18 and the power delay mechanism 19 can be configured.

Further, as shown in FIG. 21, the power transmission mechanism 18 and the power delay mechanism 19
And a pair of right and left interlocking arms 46 and 47 are rotatably arranged between the left and right arms 5g and 6g by pivotally supporting a substantially middle portion of the pair of interlocking arms 46 and 47 in a longitudinal direction thereof by a support shaft 48. And the base ends of the interlocking arms 46 and 47 are pivotally attached to the rear ends of the arms 5g and 6g by the pins 27, so that the base ends of the interlocking arms 46 and 47 are at one end and vertically superposed on each other. Has a slide pin 49 protruding therefrom, and the other has a slide groove 50 opening at the tip,
The length of the slide pin 4 is set to be longer than the diameter of the slide pin 49 by an appropriate dimension.
9 can be configured to be slidably engaged. In each of the above embodiments, the upper center hinge for connecting the upper part of the door has been described. However, the lower center hinge can be similarly configured.

[0045]

According to the present invention, as described above, by applying a torque in the opening direction or the closing direction to the door in the door pair at the end, the door can be opened at a predetermined angle or more. At that time, the doors in the adjacent door pair are given a torque in the opening direction or the closing direction, whereby the doors are opened or closed to a certain extent, so that the common vehicle follows the guide rails. With this running force, a plurality of door pairs are sequentially folded and opened or closed in a planar manner. Even if there is, it can be smoothly opened and closed.

Further, the pair of left and right hinges, the power transmission mechanism between the two hinges, and the power transmission delay mechanism are all incorporated in a common traveling body, so that the hinge can be reduced in size and weight, and the traveling body can be realized. Since each member is not extended outward from the door, when opening and closing the door, there is no need to pinch clothes and other storage items. Can be done quickly.

[Brief description of the drawings]

FIG. 1 is a plan view showing a first embodiment of a center hinge of an interlocking folding door according to the present invention when a door is closed and partially shown in section.

FIG. 2 is a plan view showing the same embodiment in a partially sectioned state in an interlocking state with the door open;

FIG. 3 is a plan view showing the embodiment in a partially sectioned state in a door-closing interlocking state;

FIG. 4 is a plan view showing a hinge according to a second embodiment of the present invention in a partially sectional view when the door is closed.

FIG. 5 is a sectional view taken along line AA ′ in FIG. 4;

FIG. 6 is a plan view showing the second embodiment in a partially sectional view in an interlocking state with the door open;

FIG. 7 is a plan view showing a third embodiment of the hinge in a partially sectioned state when the door is closed.

FIG. 8 is a plan view showing the embodiment in a partially sectioned state, showing the door opening interlocking state.

FIG. 9 is a plan view showing a fourth embodiment of the hinge according to the present invention in a partially closed state in a door closed state.

FIG. 10 is a plan view showing the embodiment in a partially sectioned state in an interlocking state with the door open.

FIG. 11 is a plan view showing a fifth embodiment of the hinge in a partially closed state in a closed state.

FIG. 12 is a plan view showing the embodiment with a partial cross section in an interlocking state with the door open;

FIG. 13 is a plan view showing a sixth embodiment of the hinge in a partially closed state in a door closed state;

FIG. 14 is a plan view showing a state where the door opening interlocking operation is started, showing the embodiment in a partially sectioned manner.

FIG. 15 is a plan view showing a seventh embodiment of the hinge in a partially closed state in a door closed state.

16 is a sectional view taken along the line BB 'in FIG.

FIG. 17 is a plan view showing a state where the door opening interlocking start state is shown in a partially sectioned manner in the embodiment;

FIG. 18 is a plan view showing the eighth embodiment of the hinge in a partially closed state in a door closed state.

FIG. 19 is a plan view showing a state where the door opening interlocking start state is shown in a partially sectioned manner in the embodiment;

FIG. 20 is a plan view of a hinge according to another embodiment of the present invention in a partially sectioned state in a closed state.

FIG. 21 is a plan view showing a still further embodiment of the hinge in a closed state in which a part of the hinge is partially cut away.

FIG. 22 is a schematic front view of the interlocking folding door device.

23A and 23B show the interlocking folding door device, wherein FIG. 23A is a schematic plan view in a closed state, and FIG. 23B is a schematic plan view in an open state.

FIG. 24 is a rear view showing a conventional door opening assist device for a folding door.

FIG. 25 is a plan view showing the door closing state of the device.

FIG. 26 is a plan view showing the door opening state of the above device.

FIG. 27 is a plan view showing the door closing state of the above device.

[Explanation of symbols]

 Reference Signs List 1 traveling body 4 guide rail 5 hinge 6 hinge 5a arm 5g arm 6a arm 6g arm 5b link 6b link 14 door pair 15 door pair 14a door 15a door 18 power transmission mechanism 19 transmission delay mechanism

Claims (1)

(57) [Claims] 1. A door comprising a plurality of door pairs, wherein the doors of each door pair are pivotally attached to each other so as to be freely foldable. A center hinge of an interlocking folding door pivotally attached to a common traveling body guided so as to be freely run along the traveling body, wherein the traveling body is formed as a hollow body having an open front surface. A pair of left and right hinges formed by arms and links provided on both left and right sides are connected to the traveling body so that the doors of two adjacent door pairs can be folded freely. The arm is located between the two door pairs in the traveling body and connected by a power transmission mechanism that transmits the door opening / closing force to each other, and the power transmission mechanism includes a door opening / closing force transmission delay mechanism between the two door pairs. ing A center hinge for an interlocking folding door.