JP7152248B2 - door mechanism - Google Patents

Description

The present invention relates to a door mechanism for opening and closing an opening.

As a door mechanism, a door mechanism that opens and closes an opening by rotating a door is generally known. Such a door mechanism rotates the door around a single rotation axis and has a simple structure. A large space was required on the front side of the opening. For this reason, a door mechanism has been developed in which the door can be compactly rotated in front of the opening by using an arm that can be rotated by two rotating shafts.

For example, the door mechanism using an arm disclosed in Patent Document 1 is configured by connecting a door capable of closing the opening to a box-shaped main body having an opening on the front side using a support arm and a guide arm. ing. The support arm is U-shaped in plan view and mainly supports the load of the door. and a support fixed shaft that is rotatably disposed on the side wall and fixedly supported by the side wall. The guide arm is L-shaped in plan view and mainly guides the movement of the door when it is opened and closed. and a guide fixed shaft rotatably disposed relative to the side wall and fixedly supported on the side wall. When the door is opened, the support-movement shaft and the guide-movement shaft move to the outside of the side wall, and the support-movement shaft moves to the rear side of the opening. By cooperating with both arms in this way, while sliding the door toward the side wall in front of the opening, the end of the door (the end on the side wall in the closed state) is moved as the opening progresses. The door can be compactly rotated in front of the opening because the door is pulled backward from the opening.

Japanese Patent Application Laid-Open No. 2000-160921 (page 3, FIG. 3)

However, in the door mechanism 910 shown in Patent Document 1, as shown in FIG. 8, when the door 905 is closed, a guide locus T92 around the guide fixed shaft F92 of the guide arm 970 as a rotation center, The crossing angle θ91 between the supporting and guiding trajectory T91 having the supporting movement axis M91 of the supporting arm 960 as the rotation center is small, the two guiding trajectories T91 and T92 are close to each other, and the guiding movement axis M92 of the guiding arm 970 is open and closed. Therefore, there is a problem that the door 905 tends to swing when opening and closing, and the movement of the door 905 is not stable.

SUMMARY OF THE INVENTION An object of the present invention is to provide a door mechanism that can stably guide a door relative to an opening when the door is opened and closed.

In order to solve the above problems, the door mechanism of the present invention includes:
a door capable of closing an opening; a support arm rotatable around a support fixed axis and around a support movement axis for supporting the door; and a support arm rotatable around a guide fixed axis. and a guide arm that is rotatable around a guide movement axis and guides the movement of the door when opening and closing the door, and an inner side and an outer side that intersect the opening and extend in the depth direction of the opening. and a separating side wall, wherein the door can be arranged along the side wall when the door is open,
When the door is closed, the guide movement shaft is further away from the opening than the support movement shaft ,
The guide movement shaft is characterized in that it is provided in the middle of the guide arm .
According to this feature, when the door is closed, the guide movement shaft is further away from the opening than the support movement shaft. The angle of intersection between the guide movement axis and the guide trajectory is large, and both guide trajectories are separated, making it easy to guide the door along the guide trajectory and stably opening and closing the door. can guide you.

When the door is closed, the support guide trajectory of the guide movement shaft whose rotation center is the support movement shaft and the guide guide trajectory of the guide movement shaft whose rotation center is the guide fixed shaft have an intersection angle is 45 degrees or more.
According to this feature, since the support guide locus and the guide guide locus extend in a direction in which they are sufficiently separated from each other, the door can be reliably guided.

It is characterized in that, when the door is closed, the guide fixed shaft is spaced apart from the side wall in an inward direction crossing the side wall.
According to this feature, since the distance between the guide fixed axis and the guide moving axis can be shortened, the diameter of the circular arc of the guide guidance locus can be shortened and the curvature of the arc can be increased. The induced trajectory is further separated.

When the door is closed, the guide arm is disposed within a housing comprising the opening and the side wall,
The guide fixed shaft is arranged and supported by a horizontally extending frame of the housing.
According to this feature, since the guide arm can be supported by the frame having the support strength, the strength necessary for supporting the guide arm can be obtained with a simple structure.

A separation distance between the guide fixed shaft and the guide moving shaft is less than or equal to a separation distance from the opening to the guide fixed shaft.
According to this feature, it is possible to prevent the guide movement shaft from protruding outside the opening during the opening and closing operation of the door, thereby preventing injury due to contact with the guide arm.

It is a top view which shows typically the door mechanism in embodiment of this invention. 1 is a perspective view showing a display case employing a door mechanism according to an embodiment of the present invention; FIG. FIG. 10 is a perspective view showing a state in which the door of the display case employing the door mechanism is opened; 1 is an exploded perspective view of a display case employing a door mechanism; FIG. It is a perspective view showing a support arm mechanism. FIG. 4 is a plan view showing the door mechanism with the door closed; (a) to (f) are plan views schematically showing opening and closing operations of a door. (a) to (c) are plan views showing an example of a housing to which the door mechanism of the present invention is applied. It is a top view which shows the door mechanism of a prior art.

A form for implementing a door mechanism according to the present invention will be described.

Embodiment

A door mechanism according to an embodiment of the present invention will be described with reference to FIG.

As shown in FIG. 1, the door mechanism 110 includes a door 105 capable of closing an open space A (opening), a support arm 160 and a guide arm, which are two arms attached to the door 105 and supporting the door 105 in rotation. 170, and a side wall 135 that intersects the open space A (the door 105 in the closed position) and extends in the depth direction of the open space A to separate the inner side B and the outer side C that are on the side of the open space A, The door 105 closes the open space A at the closed position, and the door 105 at the open position is substantially parallel to the side wall 135 at the outer side C of the side wall 135 and opens the open space A (see two-dot chain line).

The support arm 160 is arranged to be relatively rotatable with respect to the fixed portion and is fixedly supported by the fixed portion and is arranged to be relatively rotatable with respect to the door 105 . The load of the door 105 is mainly supported by the support movement shaft M11 that moves together. Further, the guide arm 170 is arranged to be relatively rotatable to the door 105 and a guide fixed shaft F12 that is arranged to be rotatable relative to the fixed portion and is fixedly supported by the fixed portion. The movement of the door 105 is mainly guided by the guide movement shaft M12 that moves together with the door 105 .

When the door 105 is closed, the guide movement axis M12 is further away from the open space A than the support movement axis M11. , the intersection angle θ11 between the guide movement axis M12 and the guide trajectory T12, which rotates about the guide fixed axis F12, is large, and both of the guide trajectories T11 and T12 extend in a direction separating from each other, along the guide trajectory T12. It is easy to guide the door 105 by using the opening and closing of the door 105, and the door 105 can be stably guided.

As described above, the door mechanism 110 can be applied to various devices as long as the door 105 capable of closing the open space A can be opened to the outside C of the side wall 135 using the support arm 160 and the guide arm 170. can be done. As a specific example thereof, a door mechanism applied to a display case according to the present invention will be described below based on an embodiment.

A door mechanism according to an embodiment will be described with reference to FIGS. 2 to 7. FIG.

Also, in this embodiment, each surface facing the inside of the display case will be described as an inner surface, and each surface facing the outside of the display case will be described as an outer surface, based on the state in which the door of the display case is closed.

A door mechanism 10 (see FIG. 3) according to the present embodiment is used in an exhibition case 1 for exhibiting exhibits such as sculptures, works of art, antiques, jewelry, etc., in art galleries, museums, and the like. As shown in FIG. 2, when the door 5 is closed, the display case 1 seals the gap of the display case 1, increases the airtightness of the inside 4B, keeps the humidity in the display case 1 constant, Intrusion of contaminants contained in the outside air is prevented, and deterioration of exhibits can be suppressed, and as shown in FIG. Since it is positioned along the outside, it is easy to put in and take out the exhibits and maintain the exhibits.

As shown in FIGS. 2 to 4, the display case 1 is configured by connecting a box-shaped display housing 4 having an opening 4A to a box-shaped basic housing 3 having an opening 3A on the front side. A main body 2, a door 5 (door mechanism 10) capable of closing the opening 3A of the base housing 3 and the opening 4A of the exhibition housing 4, and a support arm mechanism 6 fixed to the main body 2 and connecting the door 5 so as to be capable of opening and closing. (door mechanism 10) and the guide arm mechanism 7 (door mechanism 10). The support arm mechanism 6 and the guide arm mechanism 7 have a so-called biaxial hinge structure having hinges at both ends, and when the door 5 is opened, the door 5 is positioned outside the side wall 35 of the basic housing 3. It can be placed along the line.

First, the basic housing 3 will be described with reference to FIG. The base housing 3 has side walls 35, 36, and 37 fixed to the right side, the rear side, and the left side of a rectangular parallelepiped frame 30, respectively. It is configured by fixing a mounting table 38, and the inner side 3B and the outer side C, which are on the side of the opening 3A, are separated from each other. In particular, the side wall 35 arranged on the side on which the door 5 is opened can be described in detail as follows. It extends in the depth direction of 3A.

The frame 30 forms two four-sided frames each having a square shape in plan view, in which a pair of front and rear width rod members 30a, 30a extending in the left and right direction and a pair of left and right depth rod members 30b, 30b extending in the front and rear direction are connected. Two square frames are vertically spaced apart from each other, and the corners facing each other in the vertical direction are connected by vertically extending vertical rod members 30c, 30c, 30c, 30c. An opening edge 30f is formed by the upper and lower width rod members 30a, 30a on the front side and the left and right vertical rod members 30c, 30c on the front side, and the opening edge 30f defines the opening 3A.

In addition, a central depth rod member 30d extending in the front-rear direction is provided across the four-sided frame on the lower side of the frame 30 in the center portion in the left-right direction. A center width rod member 30e extending in the left-right direction is provided across the front-rear direction center portion between them. These enhance the structural strength of the frame 30 .

The basic housing 3 also includes a catcher 9 that magnetizes the locking mechanism 8 and the door 5 with a magnet to hold them in a temporarily fixed position. The lock mechanism 8 locks the door 5 in the temporarily fixed position to the closed position by opening the side wall 37 and operating a handle (not shown).

Next, the display enclosure 4 will be described with reference to FIGS. 2 to 4. FIG. The display cabinet 4 includes glass side plates 41, 42, and 43 that are rectangular in side view, a glass top plate 48 that is square in plan view, and an airtight plate 39 of the basic cabinet 3. Edges of the base cabinet 3 are hermetically sealed with a caulking agent (not shown). The inner side 4B and the outer side C on the side of the opening 4A are separated from each other. The front end surfaces of the glass side plates 41 and 43 are substantially flush with the front end surface of the airtight plate 39 (see FIG. 3).

In addition, as shown in FIG. 3, packings P1, P1 are fixed to the main body 2 along the front end surfaces of the glass side plates 41, 43 from the upper ends of the glass side plates 41, 43 to the upper end of the frame 30 with an adhesive. . Packings P2, P2 are fixed with an adhesive along the front end face of the glass top plate 48 and the front end face of the airtight plate 39, respectively, and each packing P2 extends over the packings P1, P1.

Next, the door 5 will be explained. Referring to FIG. 4, the door 5 includes a rectangular glass side plate 50 inserted from above into a slit in a side wall 55 formed by bending both side ends of a thin metal plate to have a C shape in plan view, The side wall 55 is formed by fixing the side wall 55 and a thin plate-like support plate member 56 arranged to face the front end face of the side wall 55 on the inner surface side of the side wall 55 with a caulking agent. For convenience of explanation, the inner diameter side is the support arm mechanism 6 side of the guide arm mechanism 7 when the door 5 is opened and closed, and the inner diameter side end portion (right end portion) of the door 5 on the side wall 35 side is defined as the inner diameter side end portion. 5R, and the opposite side end (left side end) is defined as an outer diameter side end 5L.

Referring to FIG. 4, side wall 55 is formed in a rectangular plate shape when viewed from the side by sheet metal processing a thin metal plate. Referring to FIG. 6, the support plate member 56 is a thin metal plate having magnetism, and the guide arm mechanism 7 is attached to the inner surface side of the support plate member 56, which protrudes inward from the lower end portion on the outer diameter side end portion 5L side. A plate-like door-side mounting member 51 is fixed. Note that the door-side mounting member 51 is not limited to a plate shape, and may be block-shaped or frame-shaped, and the shape is not limited.

Next, the support arm mechanism 6 will be described with reference to FIGS. 5 and 6. FIG. In the following description, the base housing 3 side will be mainly described, and the display housing 4 side will be omitted unless otherwise specified. Furthermore, in FIGS. 6 and 7, for convenience of explanation, illustration of the four-sided frame on the upper side of the frame 30 is omitted.

5 and 6, in the support arm mechanism 6, two tubular support arms 60 each having a J-shape in plan view are vertically spaced apart from each other, and the respective short tube portions 60a are vertically spaced apart from each other. It is formed by connecting with an extending C-shaped channel rod-shaped connecting rod 65, and connecting the respective long tube portions 60c with each other with a C-shaped channel rod-shaped connecting rod 68 extending in the vertical direction. The short pipe portion 60a and the long pipe portion 60c are connected by a linearly extending connecting portion 60b and are substantially parallel to each other.

The side of the support arm mechanism 6 fixed to the frame 30 will be described. A fixed shaft support portion 66 comprising a connecting plate 66a, a support fixing shaft F1, and a connecting plate 66b is provided at each of the upper and lower ends of the connecting rod 65. As shown in FIG. The connecting plate 66a is fixed to the upper end or the lower end of the connecting rod 65 with bolts and nuts. 35 and fixed. The connecting plate 66a is rotatable around the vertical axis with the fixed support shaft F1 as a base point.

The side of the support arm mechanism 6 fixed to the door 5 will be described. A moving shaft support portion 69 including a connecting plate 69a, a support moving shaft M1, and a connecting plate 69b is provided at each of the upper and lower ends of the side ends of the connecting rod 68. As shown in FIG. The connecting plate 69a is fixed to the upper end or the lower end of the side end of the connecting rod 68 with bolts and nuts. It is fixed to the upper end or lower end of the support plate material 56 at the central portion. The connection plates 69a and 69b are configured to be rotatable about the vertical axis with the support movement axis M1 as a base point.

Next, the guide arm mechanism 7 will be described with reference to FIG. The guide arm mechanism 7 includes a plate-like frame-side mounting member 73, a main body piece 72 formed by bending a straight metal pipe into an L-shape in plan view, and a main body piece 72 formed by bending a straight metal pipe into a and an extended piece 71 formed in an L shape. The frame-side mounting member 73 is not limited to a plate shape, and may be block-shaped or frame-shaped, and the shape is not limited.

The extension piece 71 has a long pipe portion 71b extending substantially vertically from the end of the short pipe portion 71a extending linearly. It is non-rotatably fixed to the mounting member 51 with bolts and nuts.

The main body piece 72 has a long pipe portion 72b extending substantially vertically from the end of a straight short pipe portion 72a. It is rotatably supported on the end of the portion 71a by a guide movement shaft M2 about a vertical axis. The extension piece 71, the guide movement shaft M2 and the body piece 72 constitute the guide arm 70. As shown in FIG.

The end of the short tube portion 72a of the main body piece 72 is pivotally supported by the frame-side mounting member 73 by a guiding fixed shaft F2 so as to be rotatable about the vertical axis. It is non-rotatably fixed to the width rod member 30e by bolts and nuts. In this manner, the guide fixed shaft F2 is arranged in the substantially central portion of the four-sided frame on the lower side of the frame 30, away from the side wall 35 and the opening 3A.

Further, when the door 5 is closed, the guide movement axis M2 is arranged on the inner side B away from the opening 3A than the support movement axis M1. located approximately in the center of

Next, the opening of the door 5 will be described with reference to FIGS. 6 and 7. FIG. First, referring to FIG. 7A, the door 5 is unlocked by the lock mechanism 8 while the door 5 is closed. Next, when the opening operation of the door 5 is started, the door 5 starts to move as the support arm mechanism 6 rotates while being supported by the support arm mechanism 6 . When the door 5 is closed, the line segment L3 connecting the support fixed axis F1 and the support movement axis M1 and the line segment L2 connecting the guide fixed axis F2 and the guide movement axis M2 are substantially parallel. , the movement of the door 5 is guided by the guide arm mechanism 7, and moves forward substantially parallel to the opening 3A, as shown in FIGS. 7(b) and 7(c). As a result, the force acting in the twisting direction on the packings P1 and P2 during opening can be reduced, so that the door 5 can be smoothly moved in the opening direction.

Referring to FIG. 6, more specifically, the support/induction trajectory T1 of the guide/movement axis M2 with the support/movement axis M1 as the rotation center has the radius of the line segment L1 connecting the support/movement axis M1 and the guide/movement axis M2. becomes an arc. When the door 5 is closed, the guide movement shaft M2 is further away from the opening 3A than the support movement shaft M1 is, and is further away from the support movement shaft M1 toward the outer diameter side end portion 5L side. This position is the starting point of the support guidance locus T1 when opening the door 5 is started.

Further, the guide locus T2 of the guide moving axis M2 with the guide fixed axis F2 as the rotation center is an arc having a radius of the line segment L2 connecting the guide fixed axis F2 and the guide move axis M2. When the door 5 is closed, the moving guide shaft M2 is closer to the opening 3A than the fixed guide shaft F2 and is further away from the fixed guide shaft F2 toward the outer diameter side end 5L. This position is the starting point of the guidance locus T2 when opening the door 5 is started.

The support guide locus T1 and the guide guide locus T2 intersecting on the guide movement axis M2 have a large crossing angle θ1 (approximately 60 degrees) when the door 5 is closed, and extend in a relatively separated direction. Therefore, the door 5 is easily guided along the guide locus T2 extending in the opening direction (side wall 35) of the door 5, and the door 5 is stably guided in the opening direction from the closed state. be able to. Although an example in which the crossing angle θ1 is approximately 60 degrees has been described, it is preferable that the crossing angle θ1 is 45 degrees or more, and if it is around 90 degrees, there is almost no problem.

The intersection angle θ1 is equal to the intersection angle θ2 between the line segment L1 and the line segment L2 according to the law of tangents. Therefore, the arrangement of the support movement axis M1, the guide movement axis M2, and the guide fixed axis F2 may be determined in consideration of the intersection angle θ2.

When the door 5 is opened from the state shown in FIG. 7(c), as shown in FIG. 7(d), the inner diameter side end 5R slides toward the side wall 35 (to the right) and crosses the side wall 35 to the outside. In addition, the outer diameter side end 5L projects forward while the door 5 is tilted so that the inner diameter side end 5R is pulled toward the rear of the opening 3A as the opening progresses, as shown in FIG. 7(e). It begins to wrap around the outside of the side wall 35 so that it can be

7(d), the door-side mounting member 51 of the door 5 to which the fixed guide shaft F2, the movable guide shaft M2, and the free end of the long tube portion 71b of the extension piece 71 are fixed (FIG. 6, 7) are aligned in a substantially straight line, the distance between the guide fixed shaft F2 and the free end of the long pipe portion 71b of the extension piece 71 is substantially maximum, and the door 5 is the farthest forward. Its projecting dimension is approximately half the width dimension of the door 5 . That is, by guiding the door 5 by the guide arm mechanism 7, the space required in front of the opening 3A can be made smaller than the width of the door 5 when the door 5 is opened.

When the door 5 is opened from the state shown in FIG. 7E, as shown in FIG. The side wall 35, the long tube portion 60c of the support arm mechanism 6, and the door 5 are arranged substantially parallel to each other, the opening operation of the door 5 is completed, and the door 5 is opened.

As for closing the door 5, the procedure for opening the door 5 described above may be reversed (in the order of FIGS. 7(f) to 7(a)). Referring to FIG. 6, at the end of closing the door 5 as well as at the start of opening the door 5, the support guide trajectory T1 and the guide guide trajectory T2 extending in the separation direction from the opening 3A intersecting on the guide movement axis M2 are: , the crossing angle θ3, which is the vertical angle of the crossing angle θ1, is large (approximately 60 degrees) and extends in a relatively separated direction. Since the door 5 is easily guided along T2, the door 5 can be stably guided when closed.

As described above, in the door mechanism 10 of the present embodiment, since the guide movement shaft M2 is provided in the middle of the guide arm 70, when the door 5 is closed, it can be guided with a simple structure. The movement axis M2 can be spaced apart from the opening 3A.

Further, when the door 5 is closed, the fixed guide shaft F2 is spaced from the side wall 35 toward the inner side B perpendicular to the side wall 35, so that the fixed guide shaft F2 and the movable guide shaft M2 can be shortened, the diameter of the circular arc of the guidance guidance trajectory T2 can be shortened, and the curvature of the circular arc can be increased, so that the support guidance trajectory T1 and the guidance guidance trajectory T2 are separated further. .

Further, since the guide fixed shaft F2 is arranged and supported by the central width rod member 30e extending in the horizontal direction, the guide arm 70 can be supported by the frame 30 having supporting strength. Provides the strength necessary to support the

Further, the dimension of the line segment L2, which is the separation distance between the guide fixed shaft F2 and the guide movement shaft M2, is substantially the same dimension that is slightly shorter than the dimension S, which is the separation distance from the opening 3A to the guide fixed shaft F2. 7(d) to (f), during the opening/closing operation of the door 5, the guide movement shaft M2 is prevented from protruding to the outside C beyond the opening 3A and comes into contact with the guide arm 70. It is possible to prevent the occurrence of injuries due to

Although the embodiments of the present invention have been described above with reference to the drawings, the specific configuration is not limited to these embodiments, and any changes or additions within the scope of the present invention are included in the present invention. be

For example, in the above-described embodiment, the support arm mechanism 6 has a connection plate 66a at one end of the support arm 60, a fixed shaft support portion 66 having a support fixed shaft F1 and a connection plate 66b, and a connection plate 69a and a support movement shaft M1 at the other end. and a moving shaft support portion 69 having a connecting plate 66b, but this is not restrictive, and pins (shafts) are formed at both ends of the support arm and the pins are attached to the frame 30 or the door. 5 may be inserted through a through hole (bearing) provided in the frame 30 or the door 5 so as to be rotatable around a vertical axis. A pin may be inserted through and supported to be rotatable about a vertical axis. The guide arm 70 is also the same.

The support arm mechanism 6 has been described as an aspect in which the connection plate 66b of the fixed shaft support portion 66 is fixed to the width rod members 30a, 30a, but is not limited to this, and may be fixed to the mounting table 38 or the bottom plate. It may be fixed to a beam member bridging the vertical rod members 30c, 30c on the opening 3A side, and is not limited. More specifically, it is only necessary to secure the rotational trajectory of the support arm mechanism 6 (support arm 60) and the guide arm mechanism 7 (guide arm 70) so that the support and fixation shaft F1 can be attached to the fixed portion.

Further, although the guide arm 70 has been described as being configured by connecting the extension piece 71 and the body piece 72 by the guide movement shaft M2, the present invention is not limited to this, and both ends thereof formed of a single member It is also possible to have a guide moving shaft and a guide fixed shaft at the same position, and the present invention is not limited to this. Furthermore, the door may be provided with an extension portion extending inward, and the main body piece 72 may be connected to the extension portion by the guide movement shaft M2.

Further, the guide arm mechanism 7 has been described as an aspect in which the frame-side mounting member 73 is fixed to the central width rod member 30e, but this is not limiting, and the guide arm mechanism 7 is directly pivotally supported on the central depth rod member 30d or the central width rod member 30e. It may be pivotally supported by the mounting table 38 or the bottom plate, or may be pivotally supported by a beam member or the like that spans the vertical rod members 30c, 30c located on the diagonal line. not something. More specifically, it is only necessary to secure the rotational trajectory of the support arm mechanism 6 (support arm 60) and the guide arm mechanism 7 (guide arm 70) so that the guide fixed shaft F2 can be attached to the fixed portion.

Although the display case 4 and the basic case 3 have been described as being rectangular in plan view, the present invention is not limited to this, and the door 105 capable of closing the open space A is attached to the support arm as described in the above embodiment. 160 and the guide arm 170 can be used as long as it can be opened to the outside of the side wall 135, and its shape is not limited. As an example of the shape, as shown in FIG. 9A, the housing 203 of the present invention has a right-angled triangular shape in a plan view, in which the opening A1 and the side wall 235 are arranged substantially perpendicular to each other to separate the inner side B1 and the outer side C. door 205, support arm 260 and guide arm 270, and separates the inside B2 from the outside C. As shown in FIG. A door mechanism 310 that separates an inner side B3 and an outer side C by comprising a door 305 of the present invention, a support arm 360 and a guide arm 370 is installed in a substantially octagonal housing 303 having side walls 335 inclined by 135 degrees. As shown in FIG. 9C, a housing 403 having a semicircular shape in plan view and having a side wall 435 extending in a semicircular shape from one end to the other end of the opening A3. A door mechanism 410 comprising a door 405, a support arm 460 and a guide arm 470 of the present invention may be applied.

1 Exhibition case 3 Basic housing 3A Opening 3B Inside 4 Exhibition housing 4A Opening 4B Inside 5 Door 6 Biaxial hinge 7 Guide arm 10 Door mechanism 30 Frame 35 Side wall 60 Support arm 105 Door 107 Guide arm 110 Door mechanism 135 Side wall 160 Support Arm A Open space (opening)
B Inside C Outside A1 to A3 Openings B1 to B3 Inside F1 Support and fixation axis F11 Support and fixation axis F12 Guidance and fixation axis F2 Guidance and fixation axis L1 Line segment L2 Line segment M1 Support movement axis M11 Support movement axis M12 Guidance movement axis M2 Guidance movement axis T1 Support guidance trajectory T11 Support guidance trajectory T12 Guidance guidance trajectory T2 Guidance guidance trajectory

Claims (5)

a door capable of closing an opening; a support arm rotatable around a support fixed axis and around a support movement axis for supporting the door; and a support arm rotatable around a guide fixed axis. and a guide arm that is rotatable around a guide movement axis and guides the movement of the door when opening and closing the door, and an inner side and an outer side that intersect the opening and extend in the depth direction of the opening. and a separating side wall, wherein the door can be arranged along the side wall when the door is open,
When the door is closed, the guide movement shaft is further away from the opening than the support movement shaft ,
A door mechanism , wherein the guide movement shaft is provided in the middle of the guide arm . a door capable of closing an opening; a support arm rotatable around a support fixed axis and around a support movement axis for supporting the door; and a support arm rotatable around a guide fixed axis. and a guide arm that is rotatable about a guide movement axis and guides the movement of the door when opening and closing the door, and an inner side and an outer side that intersect the opening and extend in the depth direction of the opening. and a separating side wall, wherein the door can be arranged along the side wall when the door is open,
When the door is closed, the guide movement shaft is further away from the opening than the support movement shaft,
The support guide trajectory of the guide movement shaft having the support movement shaft as the rotation center and the guidance guide trajectory of the guide movement shaft having the guide fixed shaft as the rotation center have an intersection angle when the door is closed. is 45 degrees or more. a door capable of closing an opening; a support arm rotatable around a support fixed axis and around a support movement axis for supporting the door; and a support arm rotatable around a guide fixed axis. and a guide arm that is rotatable around a guide movement axis and guides the movement of the door when opening and closing the door, and an inner side and an outer side that intersect the opening and extend in the depth direction of the opening. and a separating side wall, wherein the door can be arranged along the side wall when the door is open,
When the door is closed, the guide movement shaft is further away from the opening than the support movement shaft,
A door mechanism, wherein, when the door is closed, the guide fixing shaft is spaced apart from the side wall in an inward direction crossing the side wall. When the door is closed, the guide arm is disposed within a housing comprising the opening and the side wall,
4. The door mechanism according to claim 3 , wherein the guide fixed shaft is arranged and supported by a horizontally extending frame of the housing. 5. A door mechanism according to claim 1 , wherein the distance between said guide fixed shaft and said guide moving shaft is smaller than the distance between said opening and said guide fixed shaft.

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