JPWO2016136449A1 - Door opening and closing device - Google Patents

Abstract

Provided is a door opening and closing device that can prevent a door in an open position from being in the way and allows a user to easily open and close the door. The opening 4 of the main body 3 is opened and closed by the first door 1 and the second door 2. In the door opening and closing device, the first door 1 and the second door 2 in the closed position are flat, and the end 1b of the first door 1 and the second door 2 in the closed position on the opposite side to the suspension base, 2b rotates so that it may leave | separate from the opening part 4, and it is comprised so that the 1st door 1 and the 2nd door 2 in an open position may overlap with seeing from the direction at right angles to the 1st door 1. In addition, the first door 1 and the second door 2 are configured to rotate in the same direction in conjunction with each other.

Description

  The present invention relates to a door opening and closing device for opening and closing an opening of a main body with a first door and a second door.

  Folding doors are known that open and close openings such as housings of furniture and frames of buildings with a first door and a second door. As described in Patent Document 1, a typical folding door includes a foldable first door and a second door. The mutually opposing ends of the first door and the second door are rotatably connected by a hinge. Rollers are disposed at the ends of the first door and the second door opposite to the hinges. This roller is movably disposed on a rail disposed in the opening of the main body.

  A handle is attached to one of the first door and the second door. When one door is pulled with a handle, the flat first door and the second door bend into a dogleg (or L-shape). Furthermore, when one door is pulled, the first door and the second door are folded, and the opening is opened. If a folding door is used, the amount of protrusion of the door from the opening can be reduced to half when the door is opened, compared to when a single door is used.

JP 2008-240377 A

  However, in the conventional folding door, it is necessary to arrange a handle in the vicinity of the hinge in order to make the folding door easy to bend. For this reason, there exists a subject that a user cannot open and close a folding door easily depending on the attachment position of a folding door. For example, when a folding door is attached to a shelf above the eye level of the kitchen and the first door is placed on the upper side and the second door is placed on the lower side, the handle needs to be placed at a high position near the hinge. For this reason, it becomes difficult to open and close the folding door. And since the direction which pulls a folding door with a handle and the direction where a roller moves along a rail is right angle, there also exists a subject that it becomes difficult to move a roller as a folding door is folded.

  Therefore, an object of the present invention is to provide a door opening / closing device that can prevent the door in the open position from being in the way and allows a user to easily open and close the door.

  In order to solve the above problems, the present invention provides a door opening and closing device for opening and closing an opening of a main body with a first door and a second door, wherein the first door and the second door are in a closed position. And the first door in the open position, wherein the ends of the first door and the second door in the closed position, which are flat, rotate away from the opening. And the second door are configured to overlap with each other when viewed from a direction perpendicular to the first door, and the first door and the second door are configured to rotate in the same direction in conjunction with each other. It is a door opening and closing device.

  According to the present invention, since the first door and the second door at the open position overlap, it is possible to prevent the first door and the second door at the open position from protruding from the opening. Moreover, if a user opens and closes one of the first door and the second door by an operation that opens and closes a single door, the opening of the main body can be opened and closed. Therefore, the user can easily open and close the door.

The side view of the furniture explaining the principle of the present invention (FIG. 1 (a) shows a state where the first door and the second door are closed, and FIG. 1 (b) shows a state where the first door and the second door are opened. Show) The vertical sectional view of the furniture to which the door opening and closing device of the first embodiment of the present invention is attached (FIG. 2A shows a state in which the first door and the second door are closed, and FIG. (Shows the door and the second door opened slightly) The vertical sectional view of the furniture to which the door opening and closing device of the first embodiment of the present invention is attached (FIG. 3A shows a state in which the first door and the second door are further opened, and FIG. (Shows the state where the first and second doors are fully open) Part IV enlarged view of Fig. 3 (a) Appearance perspective view of interlocking member and second door opening and closing device Exploded perspective view of interlocking member and second door opening and closing device Sectional view of the second door opening and closing device VIII enlarged view of FIG. Side view showing another example of interference prevention mechanism Side view of the door opening and closing device of the second embodiment of the present invention (FIG. 10A shows a state where the first door and the second door are closed, FIG. 10B shows the first door and the second door are closed. (Slightly open state is shown, FIG. 10 (c) shows a state where the first door and the second door are further opened) Side view of the door opening and closing device of the second embodiment of the present invention (FIG. 11A shows a state where the first door and the second door are further opened, FIG. 11B shows the first door and the second door. Indicates fully open) External perspective view of the first door opening and closing device Sectional view of the first door opening and closing device Exploded perspective view of the first door opening and closing device Skeleton of the first door opening and closing device The vertical sectional view of the furniture to which the door opening and closing device of the third embodiment of the present invention is attached (FIG. 16A shows a state in which the first door and the second door are closed, and FIG. 16B shows the first (Shows the door and the second door opened slightly) The vertical sectional view of the furniture to which the door opening and closing device of the third embodiment of the present invention is attached (FIG. 17A shows a state in which the first door and the second door are further opened, and FIG. (Shows the state where the first and second doors are fully open) The perspective view of the lower opening door which uses the door opening and closing apparatus of 2nd embodiment of this invention The perspective view of the right opening door which uses the door opening and closing apparatus of 2nd embodiment of this invention The perspective view of the underfloor storage using the door opening and closing device of the second embodiment of the present invention. The perspective view of the ceiling arrangement | positioning furniture which uses the door opening / closing apparatus of 2nd embodiment of this invention.

  Hereinafter, a door opening and closing apparatus according to an embodiment of the present invention will be described with reference to the drawings. However, the door opening and closing apparatus of the present invention can be embodied in various forms, and is not limited to the embodiments described in the specification. This embodiment is provided with the intention of enabling those skilled in the art to fully understand the scope of the invention by fully disclosing the specification.

  FIG. 1 is a view for explaining the principle of the present invention, and shows a side view of furniture. As shown in FIG. 1A, the opening 4 of the main body 3 is opened and closed by the first door 1 and the second door 2. As shown in FIG.1 (b), in this invention, the 1st door 1 and the 2nd door 2 in a closed position are flat, and it is hung (the 1st door opening / closing device 11 and the 2nd door opening / closing device 12). The ends 1b and 2b opposite to the side (to be described later) are rotated away from the opening 4, and the first door 1 and the second door 2 in the open position become the first door 1. The door opening and closing device is configured to overlap when viewed from a right angle. Then, the door opening and closing device is configured such that the first door 1 and the second door 2 are rotated and interlocked in the same direction.

  More specifically, the rotation center 2a of the second door 2 is arranged at a position different from the rotation center 1a of the first door 1, and the rotation radius R2 of the second door 2 is set to be larger than the rotation radius R1 of the first door 1. Enlarge. When it is assumed that the first door 1 and the second door 2 in the closed position are arranged in a vertical plane, and the first door 1 is arranged on the upper side and the second door 2 is arranged on the lower side, The rotation center 2 a is arranged above the second door 2 in the closed position and on the back side of the main body 3 from the rotation center 1 a of the first door 1.

  By carrying out like this, it can prevent that the 1st door 1 and the 2nd door 2 in an open position protrude from the opening part 4, and become obstructive. Further, the opening 4 of the main body 3 can be opened and closed if the user opens or closes one of the first door 1 and the second door 2 as if opening and closing one door. Therefore, the user can easily open and close the door. Furthermore, since the ends 1b and 2b of the first door 1 and the second door 2 on the opposite side of the suspension base are rotated away from the opening 4 as in the case of opening and closing the single door, the first door The back surfaces 1 c and 2 c of the first door 2 and the second door 2 face the opening 4. When the object is stored in the opening 4, the first door 1 and the second door 2 are closed even if the objects hit the backs 1 c and 2 c of the first door 1 and the second door 2 and become wrinkled. At this time, it is possible to hide the wrinkles of the back surfaces 1c and 2c. Therefore, it can be made furniture that looks good.

  In addition, the 1st door opening / closing apparatus 11 which enables the 1st door 1 to rotate may be a thing with the fixed rotation center 1a, or the rotation center 1a to move. For example, a single-axis hinge having a constant rotation center can be used, or a slide hinge including a four-joint link in which the rotation center moves can be used. If the slide hinge is used, the first door 1 can be taken forward, which is advantageous for opening and closing the first door 1. The rotation radius R1 of the first door 1 is the minimum distance from the rotation center 1a to the first door 1.

  Also, the second door opening / closing device 12 that rotatably supports the second door 2 may have a constant rotation center 2a or may move the rotation center 2a. FIG. 1B shows a second door opening / closing device 12 including an arm 5 having a constant rotation center 2a. One end of the arm 5 is connected to the second door 2 so as not to rotate, and the other end is connected to the main body 3 so as to be rotatable around the rotation center 2a. The rotation radius R2 of the second door 2 is larger than the rotation radius R1 of the first door 1, and it is possible to open and close the second door 2 without bringing the second door 2 forward. By using the second door opening / closing device 12 having a constant rotation center 2a, the mechanism of the second door opening / closing device 12 can be simplified. The rotation radius R2 of the second door 2 is the minimum distance from the rotation center 2a to the second door 2.

  2 and 3 show the door opening and closing device of the first embodiment of the present invention. It changes so that the opening angle of the 1st door 1 and the 2nd door 2 may become large in order of Drawing 2 (a), Drawing 2 (b), Drawing 3 (a), and Drawing 3 (b).

  The door opening / closing device of this embodiment includes a slide hinge 11 as a first door opening / closing device that rotatably supports the first door 1, a second door opening / closing device 12 that rotatably supports the second door 2, The interlocking member 14 that interlocks the rotation of the one door 1 and the rotation of the second door 2 and the initial opening angle α of the first door 1 (the opening angle from the closed position of the first door 1) is the initial opening of the second door 2. And an interference prevention mechanism 15 that is larger than an angle β (an opening angle from the closed position of the second door 2). In the following, for convenience of explanation, the first door 1 and the second door 2 are arranged in a vertical plane, the first door 1 is arranged on the upper side, the second door 2 is arranged on the lower side, and the main body 3 is viewed from the front. The configuration of the door opening and closing device will be described using the direction when viewed, that is, the up-down direction, the front-rear direction, and the left-right direction shown in FIG. 2A (the left-right direction is a direction orthogonal to the paper surface). Of course, the arrangement of the door opening and closing device is not limited to such an arrangement.

  As shown in FIG. 2A, the main body 3 includes a bottom plate 3a, a side plate 3b, and a top plate 3c. A square opening 4 is provided at the front end of the main body 3. The opening 4 is opened and closed by the first door 1 and the second door 2. The slide hinge 11, the second door opening / closing device 12, the interlocking member 14, and the interference prevention mechanism 15 are provided on the left and right of the main body 3. A handle (not shown) is attached to the lower portion of the second door 2.

  Below, the structure of the slide hinge 11, the 2nd door opening / closing apparatus 12, the interlocking member 14, and the interference prevention mechanism 15 is demonstrated in order.

  FIG. 4 shows a cross-sectional view of the slide hinge 11. The slide hinge 11 is rotatably connected to the main body side member 21 attached to the top plate 3c of the main body 3, the door side member 22 attached to the back surface 1c of the first door 1, and the main body side member 21 and the door side member 22. And a second link 24 rotatably connected to the main body side member 21 and the door side member 22. The main body side member 21 is attached to the main body 3 via the attachment plate 25. By the mounting plate 25, the front and rear, the left and right, the top and bottom positions of the first door 1 with respect to the main body 3, and the tilt can be adjusted.

  The main body side member 21, the door side member 22, the first link 23, and the second link 24 are four-joint rotating chains in which all four links are chained by a pair. When the main body side member 21 is fixed to the main body 3, the first door 1 fixed to the door side member 22 is allowed to perform a certain fixed movement. The instantaneous center P1 of the first door 1 is the intersection of a line L1 connecting the two axes of the first link 23 and a line L2 connecting the two axes of the second link 24. This instantaneous center P1 is the rotation center 1a. In this example, since the instantaneous center P1 is located on the first door 1, the rotation radius R1 of the first door 1 is zero.

  As shown in FIG. 5, the second door opening / closing device 12 includes a case 27 attached to the main body 3, and an arm 5 connected to the case 27 so as to be rotatable around a shaft 28 and supporting the second door 2. Prepare. The second door opening / closing device 12 has a lift assist function that gives an assist force in the opening direction to the arm 5 so that the user can open the second door 2 with a slight force.

  As shown in FIG. 6, a slider 29 is slidably arranged in the front-rear direction in the case 27 divided into left and right parts. The slider 29 is biased forward by the coil spring 30. A cam surface 29 a made of an inclined surface is formed on the front end surface of the slider 29. The roller 31 of the arm 5 is brought into contact with the cam surface 29a, and force in the opening direction and the closing direction is applied to the arm 5 from the cam surface 29a. A spring receiver 32 is fixed to the case 27. The coil spring 30 is interposed between the slider 29 and the spring receiver 32. In order to adjust the spring force of the coil spring 30, a position adjusting mechanism for adjusting the position of the support piece 32 a contacting the coil spring 30 is incorporated in the spring receiver 32.

  A linear damper 33 is incorporated in the slider 29. The linear damper 33 realizes a soft-down function and abuts on the arm 5 near the closed position so that the second door 2 is slowly closed.

  The arm 5 includes a base end side curved portion 5a and a distal end side connecting portion 5b which are divided into three parts. The curved portion 5a and the connecting portion 5b are integrally coupled. The curved portion 5 a of the arm 5 is supported by the case 27 so as to be rotatable around the shaft 28. A roller 31 that can move the cam surface 29 a of the slider 29 is attached to the curved portion 5 a of the arm 5. A position adjusting mechanism 34 is attached to the connecting portion 5b of the arm 5 for adjusting the front / rear, left / right and up / down positions and inclination of the second door 2. The second door 2 is non-rotatably attached to the arm 5 via the position adjustment mechanism 34.

  As shown in the sectional view of FIG. 7, when the second door 2 is in the closed position, the coil spring 30 is closed to the arm 5 in the closing direction from the positional relationship of the shaft 28 of the arm 5, the roller 31, and the cam surface 29 a of the slider 29. Give the catch power. For this reason, the closed position of the second door 2 is maintained. When the user opens the second door 2, the arm 5 rotates in the opening direction, and the roller 31 of the arm 5 moves downward on the cam surface 29 a of the slider 29. At this time, the coil spring 30 applies an assist force in the opening direction to the arm 5 from the positional relationship of the shaft 28 of the arm 5, the roller 31, and the cam surface 29 a of the slider 29. Therefore, the user can open the second door 2 with a slight force. The assist force in the opening direction continues until the fully opened position of the second door 2 shown in FIG.

  As shown in FIG. 2, the interlocking member 14 has one end connected to the first door 1 and the other end being an arm so that the rotation of the first door 1 and the rotation of the second door 2 are interlocked. 5 is movably engaged. As shown in the perspective view of FIG. 5, the interlocking member 14 is formed by bending a thin plate, and an attachment plate 14a attached to the first door 1 and an L-shaped engagement plate bent with respect to the attachment plate 14a. 14b. An attachment plate 14 a of the interlocking member 14 is attached to the first door 1. As shown in the exploded perspective view of FIG. 6, a roller 35 is rotatably attached to the distal end portion of the engagement plate 14 b of the interlocking member 14. The roller 35 is movable in the longitudinal direction of the arm 5 while contacting the upper end surface of the arm 5 (see FIG. 3A).

  As shown in FIG. 2A, when opening the first door 1 and the second door 2 in the closed position, the first door 1 rotates around the rotation center 1a of the slide hinge 11, and the second door 2 is The arm 5 rotates around the rotation center 2a. When the first door 1 and the second door 2 are thick, the first door 1 and the second door 2 interfere with each other due to the difference in the rotation paths of the first door 1 and the second door 2, and the first door 1 and The second door 2 may not open. For this reason, as shown in FIG. 2 (b), an interference prevention mechanism 15 is provided that makes the initial opening angle α of the first door 1 larger than the initial opening angle β of the second door 2.

  The interference prevention mechanism 15 includes a swing member 41 that is swingably supported by the arm 5. The swinging member 41 rotates in one direction so as to push the first door 1 when opening the first door 1 and the second door 2 in the closed position, and the first door 1 and the second door in the open position. When 2 is closed, it is rotated in the other direction so as to be separated from the first door 1.

  As shown in FIG. 8, in this embodiment, the interference prevention mechanism 15 includes a swing member 41 supported by the arm 5 so as to be swingable around a fulcrum 41 a, and between the arm 5 and the swing member 41. A coil spring 42 as an urging member that is bridged and urged so that the oscillating member 41 rotates in one direction; an abutting member 43 that is disposed on the main body 3 and can contact the oscillating member 41; Is provided. When the first door 1 and the second door 2 are opened, the swing member 41 is rotated in one direction by the coil spring 42. When the first door 1 and the second door 2 are closed, the swing member 41 contacts the contact member 43, and the swing member 41 rotates in the other direction.

  FIG. 9 shows another example of the interference prevention mechanism 15. In this example, the interference prevention mechanism 15 includes a swing member 45 that is supported by the main body 3 so as to be swingable around a fulcrum 45a. The swinging member 45 rotates in one direction due to the gravity, and stops rotating by hitting a stopper 46 provided on the main body 3. A spring may be used to stabilize the position of the swing member 45. The swing member 45 is formed with a groove 45b into which a pin provided on the second door 2 is fitted. When the second door 2 is closed, the pin of the second door 2 is fitted into the groove 45b of the swing member 45, and the swing member 45 rotates in the other direction.

  When the second door 2 in the closed position is opened, the swing member 45 is rotated in one direction by the pin of the second door 2. At this time, due to the distance from the fulcrum 45a, the amount of movement of the tip 45c of the swinging member 45 is larger than that of the groove 45b. The first door 1 comes into contact with the tip 45c of the swing member 45. For this reason, the initial opening angle α of the first door 1 can be made larger than the initial opening angle β of the second door 2.

  The opening operation of the first door 1 and the second door 2 is as follows. As shown in FIG. 2 (a), when the first door 1 and the second door 2 are in the closed position, the first door 1 is given a catching force in the closing direction by a spring provided on the slide hinge 11. The door 1 keeps the closed position. Further, the second door 2 is given a catching force in the closing direction by the second door opening / closing device 12, and the second door 2 maintains the closed position.

  As shown in FIG. 2 (b), when the user opens the second door 2, the interference prevention mechanism 15 is activated to make the opening angle α of the first door 1 larger than the opening angle β of the second door 2. . Thereby, it can prevent that the 1st door 1 and the 2nd door 2 from which a rotation track | orbit differs differ.

  As shown in FIG. 3A, when the user further opens the second door 2, the first door 1 is rotated in the opening direction by the interlocking member 14 similarly to the second door 2. Due to the difference in rotational trajectory between the first door 1 and the second door 2, the second door 2 rotates so as to go under the first door 1. As shown in FIG. 3B, the rotation of the second door 2 so as to go below the first door 1 continues until the first door 1 and the second door 2 are fully opened.

  10 and 11 show a door opening and closing device according to a second embodiment of the present invention. 10 (a), FIG. 10 (b), FIG. 10 (c), FIG. 11 (a), and FIG. 11 (b) are changed in order of increasing the opening angle of the first door 1 and the second door 2. To do. In this embodiment, the end surfaces 1d and 2d of the first door 1 and the second door 2 are inclined, the lift assist function is provided in the first door opening and closing device 51, and the second door opening and closing device is the first. The door opening and closing device of the first embodiment is that the arm 52 is rotatably connected to the one door opening and closing device 51, and the interlocking member 53 is provided with a shaft 53a that fits into the groove 52a of the arm 52. And different.

  Below, the structure of the 1st door 1, the 2nd door 2, the 1st door opening / closing apparatus 51, the arm 52, and the interlocking member 53 is demonstrated in order. For convenience of explanation, the configuration of the door opening and closing device of the second embodiment will be described using the same direction as the door opening and closing device of the first embodiment.

  As shown to Fig.10 (a), the end surfaces 1d and 2d which the 1st door 1 and the 2nd door 2 mutually oppose with respect to the front 1e and 2e of the 1st door 1 and the 2nd door 2 which can be visually recognized from the outside. Tilt. The end faces 1d and 2d are parallel to each other. As shown in FIG. 10B, when the first door opening / closing device 51 and the arm 52 open the first door 1 and the second door 2, the end surface 2 d of the second door 2 changes the end surface 1 d of the first door 1. Configured to push. The first door 1 rides on the second door 2 and moves forward. As a result, the first door 1 and the second door 2 are prevented from interfering with each other and cannot be opened. Moreover, when the 1st door 1 and the 2nd door 2 are closed by making the end surfaces 1d and 2d incline, the inside of the main body 3 can be made invisible.

  FIG. 12 is an external perspective view of the first door opening / closing device 51. The first door opening / closing device 51 includes a case 50 attached to the main body 3 and a first arm 54 coupled to the case 50 so as to be rotatable around a shaft 56. An arm 52 is connected to the case 50 so as to be rotatable around a shaft 57. As shown in FIG. 10A, the arm 52 may be directly connected to the case 50, or may be connected to the case 50 via an attachment 55 as shown in FIG.

  One end of the interlocking member 53 is fixed to the first arm 54. A shaft 53 a that fits into the groove 52 a of the arm 52 is provided at the other end of the interlocking member 53. The groove 52 a of the arm 52 is elongated along the longitudinal direction of the arm 52.

  As shown in FIGS. 10A, 10B, and 10C, when the user opens the second door 2 in the closed position, the arm 52 rotates around the shaft 57 in the opening direction. As the arm 52 rotates in the opening direction, the shaft 53a of the interlocking member 53 slides along the groove 52a of the arm 52, and the first arm 54 rotates in the opening direction. Even when the user closes the second door 2 at the opened position, the first door 1 rotates in the closing direction in conjunction with the rotation of the second door 2 in the closing direction.

  By providing the interlocking member 53 with the shaft 53a that fits into the groove 52a of the arm 52, the furniture can be arranged in any case, for example, when it is turned upside down from the arrangement shown in FIG. The first door 1 and the second door 2 can be interlocked.

  FIG. 13 shows a sectional view of the first door opening / closing device 51, and FIG. 14 shows an exploded perspective view of the first door opening / closing device 51. The first door opening / closing device 51 has a lift assist function that gives an assist force in the opening direction to the first arm 54 and also has a function of bringing the first door 1 forward.

  As shown in FIG. 13, a slider 58 is disposed in the case 50 so as to be movable in the front-rear direction. The slider 58 is biased forward by a coil spring 59. A cam surface 58 a is formed on the front end surface of the slider 58. A roller 49 that can move on the cam surface 58 a is rotatably attached to the first arm 54. When the first door 1 opens and the first arm 54 rotates in the opening direction, an assist force in the opening direction is applied to the first arm 54 by the coil spring 59.

  A mounting seat 60 is fixed to the back surface 1 c of the first door 1. The mounting seat 60 has a function capable of adjusting the front and rear, left and right, up and down positions, and inclination of the first door 1. The tip of the first arm 54 is slidably connected to the mounting seat 60 via the slider 61.

  As shown in the exploded perspective view of the first door opening / closing device 51 in FIG. 14, a slider 58 is arranged to be slidable in the front-rear direction in the case 50 divided into left and right. A cam surface 58 a made of an inclined surface is formed on the front end surface of the slider 58. A spring receiver 64 is fixed to the case 50. The coil spring 59 is interposed between the slider 58 and the spring receiver 64. In order to adjust the spring force of the coil spring 59, a position adjusting mechanism for adjusting the position of the support piece 65 that contacts the coil spring 59 is incorporated in the spring receiver 64. Case 50 is covered with a cover 70.

  A linear damper 62 is incorporated in the slider 58. The linear damper 62 realizes a soft-down function, and abuts on the first arm 54 near the closed position so that the first door 1 is slowly closed.

  The first arm 54 is connected to the case 50 so as to be rotatable around a shaft 63. A roller 49 that moves on the cam surface 58a is rotatably attached to the first arm. A slider 61 that slides on the mounting seat 60 is rotatably attached to the first arm 54 via a shaft 61a.

  In the first door opening / closing device 51, a door restraining link 66 is provided to increase the amount of the first door 1 taken out. The door restraining link 66 is rotatably connected to the first arm 54 at a position away from the shaft 63 via a shaft 67. One end of the door restraining link 66 is rotatably connected to the mounting seat 60 via a shaft 68. The other end of the door restraining link 66 is slidably and rotatably connected to the case 50 via a long hole 66a and a shaft 69.

  The reason why the take-out amount of the first door 1 is increased by the door restraining link 66 is as follows. As shown in FIG. 15, the first arm 54 and the door restraining link 66 intersect in an X shape to constitute an X link mechanism. This X-link mechanism can be considered as a combination of two chains C1 and C2. Here, the door restraint link 66 corresponds to the link a, the first arm 54 corresponds to the link b, the slider 61 corresponds to the link c, and the mounting seat 60 corresponds to the link d. The case 50 corresponds to the link e, and the long hole 66a of the door restraining link 66 corresponds to the link f. As can be seen from this skeleton, when the link e (case 50) is fixed, the link d (mounting seat 60) rotates while being taken forward of the opening 4.

  As shown in FIG. 10A, when the first door 1 and the second door 2 are in the closed position, the first door 1 has a catching force in the closing direction by the coil spring 59 provided in the first door opening / closing device 51. And the first door 1 keeps the closed position. Since the second door 2 is interlocked with the first door 1, a catching force in the closing direction is also given to the second door 2.

  As shown in FIG. 10B, when the user opens the second door 2, the end surface 2 d of the second door 2 hits the end surface 1 d of the first door 1, and the second door 2 moves the first door 1 forward. Extrude. Thereby, it can prevent that the 1st door 1 and the 2nd door 2 interfere and do not open. As shown in FIG. 10C, when the user further opens the second door 2, the second door 2 rotates so as to go under the first door 1. As shown in FIGS. 11A and 11B, the rotation of the second door 2 so as to go under the first door 1 continues until the first door 1 and the second door 2 are fully opened.

  16 and 17 show a door opening / closing device according to a third embodiment of the present invention. It changes so that an opening angle may become large in order of Fig.16 (a), FIG.16 (b), FIG.17 (a), and FIG.17 (b). The door opening and closing device of this embodiment is similar to the door opening and closing device of the second embodiment, and includes a first door opening and closing device 51 that rotatably supports the first door 1 and an arm 71 that is connected to the second door 2. And an interlocking member 53 that interlocks the rotation of the first door 1 and the rotation of the second door 2. Since the structure of the 1st door opening / closing apparatus 51 and the interlocking member 53 is the same as that of the door opening / closing apparatus of 2nd embodiment, it attaches | subjects the same code | symbol and abbreviate | omits the description.

  In the door opening and closing device of the third embodiment, the shape of the arm 71 and the groove 71a formed in the arm 71 is different from the door opening and closing device of the second embodiment. As shown in FIG. 16 (b), when opening the first door 1 and the second door 2 in the closed position, the initial opening angle β of the second door 2 is made larger than the initial opening angle α of the first door 1. This is because the second door 2 is placed forward of the first door 1. Moreover, the end surfaces 1d and 2d facing each other of the first door 1 and the second door 2 are inclined with respect to the front surfaces 1e and 2e. By inclining the end faces 1d and 2d, it is possible to prevent the first door 1 and the second door 2 from interfering with the different initial opening angles α and β.

  18 to 21 show an example in which the manner of arrangement of the door opening and closing device according to the second embodiment of the present invention is changed. FIG. 18 shows an example in which a door opening / closing device is used for the lower opening door. FIG. 19 shows an example in which a door opening / closing device is used for a right opening door. Although not shown, of course, it can also be used for the left door. FIG. 20 shows an example in which a door opening / closing device is used in the underfloor storage. FIG. 21 shows an example in which a door opening / closing device is used for furniture arranged on a ceiling. As shown in these examples, the manner of arrangement of the door opening and closing device is not limited.

  The present invention is not limited to the embodiment described above, and can be embodied in various embodiments without departing from the scope of the present invention.

  Although the example which uses a door opening / closing apparatus for furniture was demonstrated in the said embodiment, it is not restricted to furniture, It can be used for opening and closing opening parts, such as a frame of a building and a vehicle body.

  In the above embodiment, the example in which the opening of the main body is opened and closed by the first door and the second door has been described, but the opening of the main body is added by the third door, the fourth door, etc. in addition to the first door and the second door. It can be opened and closed.

  The front face of the first door and the front face of the second door may not be arranged on the same plane, and there may be a step between them.

  This specification is based on Japanese Patent Application No. 2015-034715 of an application on February 25, 2015. All this content is included here.

DESCRIPTION OF SYMBOLS 1 ... 1st door 1a ... 1st door rotation center 1b ... 1st door edge 1d ... 1st door end surface 1e ... 1st door front 2 ... 2nd door 2a ... 2nd door rotation center 2b ... End 2d of the second door ... End surface 2e of the second door ... Front face 3 of the second door ... Body 4 ... Opening 5 ... Arm 11 ... Slide hinge (hinge)
12 ... second door opening / closing device 14 ... interlocking member 35 ... roller 41 ... swing member 45 ... swing member 51 ... first door opening / closing device 52 ... arm 52a ... arm groove 53 ... interlocking member 53a ... interlocking member shaft 54 ... first arm 71 ... arm 71a ... arm groove R1 ... turning radius R2 ... turning radius α ... initial opening angle β of first door ... initial opening angle of second door

Claims (13)

A door opening and closing device for opening and closing the opening of the main body with the first door and the second door,
The first door and the second door in the closed position are flat, and the ends of the first door and the second door in the closed position on the opposite side from the suspension base are separated from the opening. The first door and the second door in the open position are configured to overlap each other when viewed from a direction perpendicular to the first door,
A door opening and closing device configured such that the first door and the second door rotate in the same direction in conjunction with each other.   The rotation center of the first door and the rotation center of the second door are arranged at different positions, and the rotation radius of the second door is larger than the rotation radius of the first door. The door opening and closing device described in 1. When it is assumed that the first door and the second door in the closed position are arranged in a vertical plane, the first door is on the upper side and the second door is on the lower side,
The rotation center of the second door is disposed on the back side of the main body with respect to the rotation center of the first door and above the second door in the closed position. Door opening and closing device. The door opening and closing device is
The initial opening angle of the first door and the initial opening angle of the second door are made different so that the first door in the closed position and the second door in the closed position open without interference. The door opening and closing device according to any one of claims 1 to 3, wherein the door opening and closing device is provided.   5. The door opening / closing device according to claim 1, further comprising an arm that is non-rotatably connected to the second door and that is connected to the main body so as to be rotatable around a rotation center. The door opening and closing device according to item 1.   The door opening and closing device includes an interlocking member that is coupled to the first door and movably engages with the arm so that the first door and the second door are interlocked. The door opening and closing apparatus according to claim 5.   The door opening and closing device according to claim 6, wherein the interlocking member has a roller in contact with the arm or a shaft that fits into a groove of the arm. The door opening and closing device is
A hinge that allows the first door to rotate;
8. A second door opening and closing device that applies at least one force in an opening direction and a closing direction to the arm connected to the second door. 9. Door opening and closing device. The door opening and closing device is
A first door connected to the first door; and a first door opening and closing device that applies at least one force in an opening direction and a closing direction to the first arm,
The door opening / closing device according to any one of claims 5 to 7, wherein the arm connected to the second door is rotatably connected to the first door opening / closing device. The door opening and closing device is
An arm that is non-rotatably coupled to the second door and is coupled to the main body so as to be rotatable about a rotation center, or a swing member that is swingably supported by the main body;
The swinging member rotates in one direction so as to push the first door when opening the first door and the second door in the closed position, and the first door and the second door in the open position The door opening and closing device according to claim 4, wherein the door opening and closing device is configured to rotate in the other direction when the door is closed.   The end surface of the first door and the end surface of the second door that face each other are inclined with respect to the front surface of the first door and the front surface of the second door that are visible from the outside. The door opening and closing device according to any one of the above. The door opening and closing device according to any one of claims 1 to 11,
The body;
The first door;
Furniture comprising the second door. A door opening and closing device for opening and closing the opening of the main body with the first door and the second door, and a second door opening and closing device for opening and closing the second door,
The first door and the second door in the closed position are flat, and the ends of the first door and the second door in the closed position on the opposite side from the suspension base are separated from the opening. The first door and the second door in the open position are configured to overlap each other when viewed from a direction perpendicular to the first door,
A second door opening and closing device configured such that the first door and the second door rotate in the same direction in conjunction with each other.

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