JP2020033745A - Double-opening door - Google Patents

Abstract

To provide a double-opening door that can be opened/closed in both directions with respect to a storage part having an opening through which an article can be put in and taken out, has a high degree of design freedom so as to suppress restriction of an opening area of the storage part, and can improve the aesthetic appearance of the opening in a state where the door is opened.SOLUTION: A double-opening door capable of being opened/closed in both directions with respect to a storage part 11 having an opening 12 through which an article can be put in and taken out, includes: a main body part 20 capable of closing the opening 12 in a blocking manner; a hinge mechanism 30 having shafts 72 which are parallelly arranged in an opposing manner in the main body part 20, come out of an insertion state inserted into holes on the storage part 11 side by an operation force of an operation part 40 for opening the main body part 20 and are drawn into the main body part 20; and arms 80 independently mounted in the main body part 20 together with the hinge mechanism 30 and causing the main body 20 to be rotated from the closed position to the open position in accordance with the opening operation of the operation part 40.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a double door.

  BACKGROUND ART Conventionally, for example, a console door in a console box has been known as a double door that can be opened and closed bidirectionally with respect to a storage section having an opening through which articles can be taken in and out (for example, Patent Document 1).

  The console door disclosed in Patent Document 1 includes a first arm pivotally supported at one end by a box body and swingable at the other end, and a first rod extending at one end at the other end of the first arm and extending along an opening of the console box. A second arm having one end pivotally supported by the first rod and the other end swingable, and a second rod having one end held by the other end of the second arm and extending along the opening of the console box. I have. Further, the box main body is provided with a lock device for engaging and disengaging the first rod and the second rod with the box main body. This constitutes a console door that can be opened and closed in both directions.

JP 2007-145165 A

  However, in the technique of the above configuration, when the console door is opened, one of the first arm and the second arm remains in the opening, so that the position where the arm is disposed is defined as the opening area. And the opening area was restricted. Further, since the arm remains when the console door is opened, further improvement in appearance has been desired.

  The present invention has been made in view of such a point, and a problem to be solved by the present invention is a double door that can be opened and closed bidirectionally with respect to a storage section having an opening through which articles can be taken in and out. It is an object of the present invention to provide a double door that has a high degree of freedom in design so as to suppress the restriction on the opening area of the storage section and that can improve the appearance of the opening when the door is open.

  The double door that solves the above-mentioned problem is a double door that can be opened and closed bidirectionally with respect to a storage section having an opening through which articles can be taken in and out, and a main body that can close and close the opening. A shaft which is arranged in parallel and opposed to each other, and which is detached from the inserted state inserted into the hole on the storage section side by the operating force of the operation section for performing the opening operation of the main body section, and is in a detached state drawn into the main body section. A hinge mechanism; and an arm that is independently housed in the main body together with the hinge mechanism, and that rotates the main body from a closed position to an open position in response to an opening operation of the operation unit.

  One feature and advantage of the above configuration is that, since the arm is provided inside the main body, the arm does not remain in the opening when the main body is turned to the open position. Thus, it is possible to provide a double door that has a high degree of freedom in design so as to suppress the restriction on the opening area of the storage portion and that can improve the appearance of the opening when the door is opened.

  The double-sided door has an urging force between the main body and the arm that relatively rotates the arm with respect to the main body such that the main body rotates from a closed position toward an open position. The hinge mechanism has a control mechanism for controlling the rotation of the arm, and the control mechanism is configured to move the arm relative to the main body in the inserted state of the shaft. A control is performed such that the rotating urging force is exerted on the elastic member, and the arm is relatively prevented from rotating relative to the main body against the urging force of the elastic member in the detached state of the shaft. May be used.

  One feature and advantage of the above configuration is that the hinge mechanism has a control mechanism for controlling rotation of the arm. The control mechanism causes the elastic member to exert an urging force that causes the arm to relatively rotate with respect to the main body in the inserted state of the shaft, and causes the arm to move against the urging force of the elastic member in the separated state of the shaft. Control is performed so as to restrict relative rotation. Thus, the control mechanism is configured such that the urging force of the elastic member is constantly exerted toward the opening of the arm when the main body is closed (shaft is inserted). Therefore, rattling of the main body can be suppressed by the arm without configuring other components. Further, the control mechanism restricts the arm from rotating relative to the main body when the main body is open (the shaft is in a detached state). It is possible to suppress the deterioration of appearance.

  The hinge mechanism in the double door includes a holding mechanism that holds the detached state of the shaft when the main body is rotated between the closed position and the open position, and detects a rotation posture of the main body. And a posture detection lock mechanism that prevents a state in which the holding mechanism holds the detached state of the shaft from being released in a preset angle region of the posture angle of the main body.

  One feature and advantage of the above configuration is that a holding mechanism is provided for holding the shaft in the detached state when the main body is rotated between the closed position and the open position. Thus, the shaft can be prevented from protruding from the main body when the main body is opened, and the housing can be prevented from interfering with the shaft when the main body is closed again. Further, since the posture detection lock mechanism does not release the state in which the holding mechanism holds the detached state of the shaft, malfunction of the shaft can be further achieved.

  In the double door, the movement of the shaft in the inserted state and the detached state of the shaft may be a mechanism in which an operating force of the operating unit is transmitted by a rack and a pinion.

  One feature and advantage of the above configuration is that the movement of insertion and removal in the shaft is a mechanism in which the operation force of the operation unit is transmitted by the rack and the pinion, so that the operation load can be suppressed, and the operability is improved. Can be planned.

  According to the present invention, the means of each of the above inventions can be freely designed so as to suppress the restriction of the opening area of the storage section in the double door that can be opened and closed bidirectionally with respect to the storage section having the opening through which articles can be taken in and out. It is possible to provide a double door that is high in degree and can improve the appearance of the opening when the door is opened.

It is the whole console box perspective view concerning an embodiment. FIG. 3 is an exploded perspective view of the console box. It is a disassembled perspective view of the hinge mechanism in a console box. It is a top view of a console box. FIG. 5 is a cross-sectional view of an inserted state of the shaft indicated by a cross section taken along line VV of FIG. FIG. 6 is a cross-sectional view of a state where the shaft is inserted, which is indicated by a cross section taken along line VI-VI in FIG. FIG. 7 is a cross-sectional view of a closed position of the main body shown in a cross section taken along line VII-VII of FIG. 4. FIG. 6 is a cross-sectional view of the open position of the main body shown in a cross section taken along VIII-VIII in FIG. 4. FIG. 9 is a sectional view taken along line IX-IX of FIG. 4. It is the whole perspective view which showed the state of the door assembly of the console box in the open position. It is the whole perspective view showing the state where the door assembly of the console box went from the open position to the closed position. It is the perspective view which showed the movement of the hinge mechanism in the state of a door assembly in an open position. FIG. 13 is a perspective view showing the movement of the hinge mechanism when the door assembly shifts from the open position to the closed position. FIG. 11 is a perspective view showing the movement of the hinge mechanism when the door assembly is in the closed position. It is a top view showing a modification of a control mechanism in a hinge mechanism. FIG. 10 is a partial plan view partially showing a modified example of a configuration of transmitting a signal to a rack in a hinge mechanism.

  An embodiment for carrying out the present invention will be described below with reference to FIGS. Here, in this embodiment, as a mode of the double door of the present invention, a door assembly 18 in the console box 1 disposed between left and right seats (not shown) such as a driver's seat and a passenger seat will be described. . In the following description, the terms upper, lower, front, rear, left, and right refer to the upper, lower, front, rear, left, and right directions described in the above-described drawings, that is, the console box 1 The directions of up, down, front, rear, left, and right are shown with reference to the state of being assembled on a floor (all not shown).

  An overall configuration of the console box 1 according to the embodiment will be described. The console box 1 is disposed between left and right seats (not shown) such as a driver's seat and a passenger seat of an automobile, for example. As shown in FIGS. 1 and 2, the console box 1 mainly includes a box 10 and a door assembly 18. The door assembly 18 is configured to be able to open and close the box 10 from left and right directions.

  The box 10 has a box-like shape on which a door assembly 18 can be placed, and has a storage portion 11 in which an article (not shown) can be stored. An opening 12 through which articles can be taken in and out of the storage section 11 is formed on the upper side of the storage section 11. Thereby, an article can be stored in the storage section 11 through the opening 12. At four places around the opening 12 of the box 10, holes 14 through which a shaft 72 of the hinge mechanism 30 described later can be inserted and removed are provided. In addition, a rib 16 that engages with a slide lock 90 of the hinge mechanism 30 described later is provided upright on the front side of the opening 12.

  The door assembly 18 mainly has a main body 20, a hinge mechanism 30, and an arm 80. Note that the door assembly 18 is covered with a cover member above the hinge mechanism 30, but is not shown to explain the internal structure of the hinge mechanism 30. The door assembly 18 is locked by the insertion state 72A (see FIG. 5) in which the shaft 72 of the hinge mechanism 30 described later is inserted into the hole 14 of the box 10 so that the door assembly 18 is locked. The lock is released when the detached state 72B (see FIG. 6) is detached and drawn into the main body portion 20.

  The main body 20 is a box-shaped member having a bottom surface capable of closing and closing the opening 12 of the box 10. The main body 20 is made of, for example, a synthetic resin. The main body 20 houses the hinge mechanism 30. The four corners of the main body 20 are provided with through holes 22 through which a shaft 72 of the hinge mechanism 30 described later is inserted. Two ribs 24 stand in parallel at the center in the left-right direction of the main body 20.

  The hinge mechanism 30 is a mechanism that enables the door assembly 18 to open and close with respect to the opening 12 from both directions. As shown in FIGS. 2 and 3, the hinge mechanism 30 has a rod-shaped shaft 72 that is inserted into and removed from the hole 14 of the box 10 through the through hole 22 of the main body 20. The four shafts 72 are inserted into the through holes 22 provided at the four corners of the main body 20. The shafts 72 are disposed in the vicinity of the left and right side walls of the main body 20 in the front-rear direction, and are opposed to each other in parallel with each other. The shaft 72 is provided with a cutout portion 74 whose outer periphery is cutout.

  A bar plate 76 having a bar 78 is fitted into the notch 74 of the shaft 72. The bar plate 76 is a member that slides along the movement of inserting and removing the shaft 72, and the bar portion 78 fits into a groove 86 of an arm 80 described later.

  A rack 70 is inserted into an end of the shaft 72 opposite to the side on which the bar plate 76 is provided. The rack 70 is formed in a square bar shape, and has an insertion hole for receiving the shaft 72 at one end. The rack 70 has a second flat gear portion 71 provided on an outer surface of a side wall thereof, and meshes with a second pinion 62 of a pinion unit 60 described later. Thus, the rack 70 converts the rotational motion of the pinion unit 60 into a linear motion and transmits the linear motion as the insertion / removal movement of the shaft 72. The two shafts 72 adjacent to each other on the left and right are arranged so that the rack 70 faces the center of the main body 20 in the front-rear direction.

  Buttons 40 (operation units) are provided between the racks 70 facing each other in the front-rear direction. The button 40 is a member that releases the lock of the door assembly 18 and opens the door assembly 18 by exerting an operation force for pushing the button assembly inward. The button 40 is slidable by a guide 41 in the left-right direction inside the main body 20. The button 40 has a spring 42 attached below the guide 41 to exert a reaction force outward and outward of the main body.

  A slide plate 50 is provided on the inner side of the main body 20 than the button 40 (operation unit). The slide plate 50 is a rectangular plate-shaped member. The slide plate 50 has a first slit 56 whose plate surface penetrates. The slide plate 50 is fixed to the main body 20 by the stepped screw 26 through the first slit 56. The slide plate 50 is slidable in the horizontal direction of the main body 20 by the slit length of the first slit 56. A first flat gear portion 57 is provided on a side wall of the slide plate 50 and meshes with a first pinion 61 of a pinion unit 60 described later. As a result, the slide plate 50 slides by the operation force by which the button 40 is pushed, and the linear motion is converted into the rotational motion by the pinion unit 60 and transmitted. The slide plate 50 is provided with a rib 52 (holding mechanism) that engages with a rib 98 (holding mechanism) of the slide lock 90 to hold the rotation position of the pinion unit 60. The slide plate 50 has a spring mounting guide rib 54 set as a guide portion of the first spring 58. The first spring 58 is provided between the slide plates 50 on both sides, and creates a pushing force of the shaft 72. Since the lengths of the spring mounting guide ribs 54 are configured such that when the buttons 40 on both the left and right sides are simultaneously pressed, the leading ends abut against each other, no further sliding movement is possible. This prevents the left and right sides of the door assembly 18 from coming off the box 10 at the same time by coming off the hole 14 (see FIG. 9).

  The pinion unit 60 transmits the force from the slide plate 50 to the rack 70 and holds the position. In the pinion unit 60, a small diameter first pinion 61 and a large diameter second pinion 62 are integrally formed adjacent to each other in the axial direction. The first pinion 61 and the second pinion 62 have the same center, and are rotatably supported by the main body 20 with the stepped screw 26. The pinion unit 60 can adjust the sliding amount and the operation load of the rack 70 by changing the gear ratio between the first pinion 61 and the second pinion 62.

  The slide lock 90 is a strip-shaped member. The slide lock 90 is disposed along the front-rear direction at the center of the main body 20. The slide lock 90 has a second slit 96 whose plate surface penetrates. The slide lock 90 is fixed to the main body 20 by the stepped screw 26 through the second slit 96. The slide lock 90 is slidable in the front-rear direction of the main body 20 by the slit length of the second slit 96. In the slide lock 90, an urging force is exerted outward (for example, forward) of the main body 20 by a second spring 94 provided in a spring hook 92. The distal end of the slide lock 90 is in contact with the rib 16 that has entered the main body 20 through the through groove 25 of the main body 20 by the urging force of the second spring 94. On the rear end side of the slide lock 90, a rib 98 (holding mechanism) is provided upright. At the rear end of the slide lock 90, a support portion 99 for pivotally supporting the pendulum 100 (posture detection lock mechanism) is provided. The pendulum 100 (posture detection lock mechanism) is pivotally supported by a stepped screw 26 so as to be freely rotatable. The pendulum 100 (posture detection lock mechanism) stops sliding of the slide lock 90 by entering between the slide lock 90 and the rib 24 when the main body 20 is rotated by the opening operation of the door assembly 18 to change the posture. regulate.

  The arm 80 is housed in the main body 20 together with the hinge mechanism 30, and is a member that rotates the main body 20 from the closed position 20A to the open position 20B in response to the opening operation of the button 40 (operation unit). The four arms 80 are configured independently of the hinge mechanism 30. A pressing surface 82 for pressing the box 10 is formed at the tip of the arm 80. The arm 80 is provided with a groove 86 into which the bar 78 is fitted. Further, between the arm 80 and the main body 20, an urging force for rotating the arm 80 relative to the main body 20 is exerted such that the main body 20 rotates from the closed position 20 </ b> A toward the open position 20 </ b> B. A torsion spring 88 is configured. The mounting structure of the arm 80 and the torsion spring 88 will be described. A cylindrical collar 73 is inserted through the outer periphery of the shaft 72. The arm 80 is fixed by fitting the end of the collar 73 through a hole 84. A torsion spring 88 is inserted around the outer periphery of the collar 73. One end of the torsion spring 88 is locked to the main body 20, and the other end is locked to the arm 80. In the arm 80, the bar portion 78 does not fit into the groove 86 in the inserted state 72A in which the shaft 72 is inserted into the hole 14. Therefore, the torsion spring 88 is in a state in which the arm 80 exerts an urging force for rotating the arm 80 relative to the main body 20. Accordingly, at the closed position 20A of the main body 20 (the inserted state 72A in which the shaft 72 is inserted into the hole 14), the urging force of the torsion spring 88 causes the pressing surface 82 of the arm 80 to press the box 10. Therefore, rattling of the main body 20 with respect to the box 10 is suppressed. On the other hand, the bar portion 78 and the groove 86 are configured to fit in the detached state 72B in which the shaft 72 is detached from the inserted state 72A inserted into the hole 14 and is drawn into the main body 20. When the bar portion 78 and the groove 86 are fitted, the arm 80 is restricted from rotating relative to the main body 20 against the urging force of the torsion spring 88. Therefore, the state where the pressing surface 82 does not protrude from the main body 20 of the arm 80 is maintained. Here, the relationship between the bar portion 78 and the groove 86 corresponds to a “control mechanism”.

  Next, the operation of the door assembly 18 will be described. As shown in FIGS. 1 and 4, in a state where the main body 20 is in the closed position 20 </ b> A, when the operation force is applied by pushing the button 40 (operation unit) inward of the main body 20, the slide plate 50 pressed by the button 40 is pressed. Moves horizontally toward the center of the door while contracting the first spring 58. At this time, the pinion unit 60 is rotated by the rotation of the first pinion 61 meshed with the first flat gear portions 57 on both side surfaces of the slide plate 50, and the second pinion 62 is rotated together. The force is transmitted to the portion 71.

  As shown in FIGS. 5 and 6, the shaft 72 fixed to the rack 70 is pulled toward the center of the front and rear of the main body 20, and comes out of the hole 14 of the box 10. At this time, the bar 80 of the bar plate 76 fixed to the shaft 72 fits into the groove 86 of the arm 80, thereby fixing the arm 80 and the main body 20.

  As shown in FIGS. 5 to 8, when the shaft 72 comes out of the hole 14 of the box 10, the door assembly 18 rotates the arm 80 by the torsion spring 88 installed on the shaft 72 on the opposite side, so that the main body 20 is rotated. Is rotated to the open position 20B. At this time, the tip of the slide lock 90 is separated from the rib 16 set on the box 10 side, and slides forward by the urging force of the second spring 94. At this time, the rib 98 (holding mechanism) set on the slide lock 90 engages with the rib 52 (holding mechanism) of the slide plate 50 that has slid and moved, and the slide plate 50 is In the direction, the return force is restricted by the reaction force of the first spring 58. Therefore, the shaft 72 is maintained in the detached state 72B which is separated from the inserted state 72A inserted into the hole 14 and is drawn into the main body 20.

  As shown in FIG. 10, when the main body 20 is rotated between the closed position 20A and the open position 20B, the pendulum 100 (posture detection lock mechanism) that freely rotates on the slide lock 90 rotates and moves by gravity. , Between the rib 24 of the main body 20 and the slide lock 90. At this time, the slide lock 90 is held on the rear side by the urging force of the second spring 94. However, even if the lock is attempted with a pen-like member from the through groove 25 of the main body 20, even if the lock is attempted, the pendulum 100 (posture) Since the detection lock mechanism is located between the rib 24 and the slide lock 90, the slide lock 90 cannot be unlocked.

  As shown in FIG. 11, when the main body 20 approaches the box 10 during the operation of closing the main body 20, the pendulum 100 (attitude detection lock mechanism) is pulled out from between the rib 24 and the slide lock 90 by gravity. The slide lock 90 is slidable, and is moved rearward by being pushed by the rib 16 of the box 10.

  As shown in FIGS. 12 to 14, when the slide lock 90 is pushed by the rib 16, the main body 20 returns to the closed position 20 </ b> A, so that the rib 52 (holding mechanism) and the rib 98 (holding mechanism) of the slide plate 50. Is disengaged, and the slide plate 50 moves outward in the left-right direction of the main body 20. By the movement of the slide plate 50, the pinion unit 60 is rotated by the movement opposite to the movement of the main body 20 to the open position 20B, and the rack 70 and the shaft 72 are pushed out from the through-hole 22 of the main body 20, and the box 10 is moved. The box 10 and the main body 20 are fixed by being inserted into the holes 14. At this time, the bar portion 78 is separated from the groove 86 of the arm 80, and the arm 80 is in a state of transmitting the urging force of the torsion spring 88 to the box 10.

  As shown in FIGS. 3 and 9, when the left and right buttons 40 (operation unit) are pressed from both sides, both the left and right racks 70 and the shaft 72 are set by setting the interval between the spring mounting guide ribs 54 of the slide plates 50. Cannot be moved. Therefore, the left and right sides of the main body 20 are configured not to come off the box 10.

  As described above, according to the door assembly 18 of the console box 1 of the present embodiment, since the arm 80 is provided inside the main body 20, the arm 80 is turned when the main body 20 is turned to the open position 20 </ b> B. 80 does not remain in the opening 12. Thereby, the door assembly 18 (double-opening) which has a high degree of freedom in design so as to suppress the restriction on the area of the opening 12 of the storage section 11 and can improve the appearance of the opening 12 when the main body 20 is opened. Door) can be provided.

  The hinge mechanism 30 has a bar 78 for controlling the rotation of the arm 80 and a groove 86 (control mechanism). The bar portion 78 and the groove 86 cause the torsion spring 88 (elastic member) to apply a biasing force that causes the arm 80 to relatively rotate with respect to the main body portion 20 in the inserted state 72A of the shaft 72, and torsion in the detached state 72B of the shaft 72. The arm 80 is controlled so as to restrict its relative rotation with respect to the main body 20 against the urging force of the spring 88. Thus, the bar 78 and the groove 86 are configured such that the urging force of the torsion spring 88 is constantly applied to the arm 80 toward the opening 12 when the main body 20 is closed (the inserted state 72A of the shaft 72). Therefore, rattling of the main body 20 can be suppressed by the arm 80 without configuring other components. Further, when the main body 20 is open (the detached state 72B of the shaft 72), the bar 80 and the groove 86 are restricted from rotating relative to the main body 20 when the main body 20 is opened. In addition, it is possible to suppress a deterioration in appearance such that the arm 80 jumps out of the main body 20.

  Further, when the main body 20 is rotated between the closed position 20A and the open position 20B, the main body 20 has a rib 52 and a rib 98 (holding mechanism) for holding the detached state 72B of the shaft 72. Thus, the shaft 72 can be prevented from protruding from the main body 20 when the main body 20 is open, and it is possible to prevent the housing 11 from interfering with the shaft 72 when the main body 20 is closed again. Further, since the pendulum 100 (posture detection lock mechanism) does not release the state in which the rib 52 and the rib 98 (holding mechanism) hold the detached state 72B of the shaft 72, malfunction of the shaft 72 can be further achieved. .

  In addition, since the operation of inserting and removing the shaft 72 is a mechanism in which the operation force of the button 40 (operation unit) is transmitted by the rack 70 and the pinion unit 60, the operation load can be suppressed, and the operability is improved. Can be planned.

  As described above, the embodiments of the present invention have been described, but the present invention is not limited to such embodiments, and can be implemented in other various forms. In the above-described embodiment, the configuration of the bar portion 78 and the groove 86 has been described as a control mechanism, but the present invention is not limited to this. For example, as shown in FIG. 15, instead of the bar plate 76, a bar bar 270 having a third flat gear portion 271 may be used. The bar 270 is inserted into the arm 280 against the urging force of the torsion spring 88 in conjunction with the movement of the shaft 72 into the disengaged state 72B by converting the rotational movement of the second pinion 62 into a linear movement. This restricts the arm 280 from rotating relative to the main body 20.

  In the above-described embodiment, the pinion unit 60 is rotated by the rotation of the first pinion 61 meshed with the first flat gear portions 57 on both side surfaces of the ride plate 50, and the second pinion 62 is rotated together. Although the configuration in which the force is transmitted to the two-plane gear unit 71 has been described, the configuration is not limited to this. For example, as shown in FIG. 16, a linear motion of the slide plate 350 may be converted into a rotary motion by the link mechanism 360 and transmitted to the rack 370.

1 Console Box 10 Box 11 Storage Unit 12 Opening 14 Hole 16 Rib 18 Door Assembly 20 Main Unit 20A Closed Position 20B Open Position 22 Through Hole 24 Rib 25 Through Groove 26 Step Screw 30 Hinge Mechanism 40 Button (Operation Unit)
42 spring 50 slide plate 52 rib (holding mechanism)
54 spring mounting guide rib 56 first slit 57 first plane gear part 58 first spring 60 pinion unit 61 first pinion 62 second pinion 70 rack 71 second plane gear part 72 shaft 72A inserted state 72B detached state 73 collar 74 notch Part 76 bar plate 78 bar part 80 arm 82 pressing surface 84 hole 86 groove 88 torsion spring 90 slide lock 92 spring hook part 94 second spring 96 second slit 98 rib (holding mechanism)
99 Supporting part 100 Pendulum (posture detection lock mechanism)
270 Bar bar 271 Third plane gear section 350 Slide plate 360 Link mechanism 370 Rack

Claims (4)

A double door that can be opened and closed bidirectionally with respect to a storage section having an opening through which articles can be taken in and out,
A main body that can close and close the opening;
A disengaged state in which the main body is disposed to face in parallel, and is detached from the inserted state inserted into the hole on the storage section side by the operating force of the operation section for performing the opening operation of the main body and pulled into the main body; A hinge mechanism having a shaft,
An arm which is independently housed in the body together with the hinge mechanism, and which has an arm for rotating the body from a closed position to an open position in response to an opening operation of the operation unit. The double door according to claim 1,
An elastic member is provided between the main body and the arm to apply an urging force to relatively rotate the arm with respect to the main body so that the main body rotates from the closed position toward the open position. And
The hinge mechanism has a control mechanism for controlling the rotation of the arm,
The control mechanism includes:
In the inserted state of the shaft, the arm exerts an urging force on the elastic member to rotate relative to the main body,
A double door that controls the arm to rotate relative to the main body against the urging force of the elastic member in the detached state of the shaft. It is a double door according to claim 1 or claim 2,
The hinge mechanism,
A holding mechanism that holds the detached state of the shaft in a state where the main body is rotated between a closed position and an open position;
A posture detection lock mechanism for detecting a rotation posture of the main body portion and preventing a state in which the holding mechanism holds the detached state of the shaft from being released in a preset angle region among posture angles of the main body portion; and , Having a double door. The double door according to any one of claims 1 to 3, wherein
A double door, wherein the movement of the shaft in the inserted state and the detached state is a mechanism in which an operating force of the operating unit is transmitted by a rack and a pinion.

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