Door closing sequence adjuster and double doors

Abstract

To provide a door closing order adjuster which has a simple structure and whose aesthetic appearance is not spoiled after installation.SOLUTION: A door closing order adjuster includes: a first slide member 40 and a second slide member 50 which are slidably supported according to respective operations of a first arm 31 and a second arm 32; a swing member 11 which is swingably attached to a door upper frame 4; and a torsion spring 23. The door closing order adjuster is configured so that a movement of the first slide member can be allowed only from one end side of the swing member and a movement of the second slide member can be inhibited from the other end side of the swing member when a previously closed door is opened, and is configured so that one end side can be moved upward by bringing the first slide member into contact with one end side of the swing member and a state in which the movement of the other end side of the swing member and the second slide member is inhibited can be released by such an operation.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a door closing order adjuster for closing two double-opening doors in the order of closing, and a double-opening door using the door closing order adjuster.

Background Art

[0002] In double-opening doors such as fire doors, a door closing order adjuster is used to adjust the closing order of the left and right doors. Conventionally, a base fixedly installed on the upper frame, an arm rotatably installed with respect to the shaft body of the base, and an elastic body that applies an urging force to the arm so that the arm protrudes in the opening direction of the door from the upper frame side. There is known a door closing order adjuster that adjusts the closing order of two doors by the arm protruding when the two doors are open (hereinafter referred to as the "first door closing order adjuster"). (Patent Document 1).

[0003] Also, a long main body case attached to the upper frame of the entrance of a building, a first lever pivotally connected at one end to a roller provided on one end side of the main body case and contacting the inner surface of the door on the side that closes first and rotatable between a state of being housed in the main body case and a state of protruding from the main body case at a predetermined angle, and a second lever pivotally connected at one end to a roller provided on the other end side of the main body case and contacting the inner surface of the door on the side that closes later and rotatable between a state of being housed in the main body case and a state of protruding from the main body case at a predetermined angle and stopping the movement of the door on the side that closes later at an angle that does not interfere with the closing movement of the door on the side that closes first and urged in the forward direction from the main body case by a kick spring, a sliding block connected to the first lever via a connecting rod and sliding in conjunction with the rotation of the first lever and urged by a spring to the other end side of the main body case and configured to stop the movement to the other end side of the main body case at a predetermined position by stopper means, and a contact fitting rotatably attached to the main body case to contact the claw portion of the second lever and hold the state where one end of the second lever protrudes forward from the main body case. There exists a door closing order adjuster (hereinafter referred to as the "second door closing order adjuster"). (Patent Document 2).

Prior Art Documents

[0004] [Patent Document 1] Japanese Patent Publication No. 2009-249842 [Patent Document 2] Japanese Patent Publication No. 2002-47860 [Overview of the project] [Problems that the invention aims to solve]

[0005] However, the first door closing sequence adjuster has aesthetic problems. While the second door closing sequence adjuster has improved aesthetically to some extent, its structure is complex because the purpose of the improvement was not to enhance aesthetics.

[0006] The present invention was made to solve the above-mentioned problems, and aims to provide a door closing sequence adjuster and a double door that have a simple structure and do not impair the aesthetics after installation. [Means for solving the problem]

[0007] To achieve the above objective, the present invention provides a door closing sequence adjuster for adjusting the closing sequence of a pre-closed door and a rear-closed door that rotate around a vertical axis, comprising: a first arm member attached to the pre-closed door; a second arm member attached to the rear-closed door; a first slide member attached to the first arm member and supported by a door support structure so as to be slidable in accordance with the movement of the first arm member; a second slide member attached to the second arm member and supported by the door support structure so as to be slidable in accordance with the movement of the second arm member; a swinging member attached to the door support structure so as to be swingable within a predetermined range about a pivot axis; and the swinging member on the side pressed by the first slide member. The present invention provides a door closing sequence adjuster comprising a biasing means for applying a biasing force acting at all times in a predetermined rotational direction to one end of the rocking member, and configured to allow the movement of the first slide member only from the one end of the rocking member and to prevent the movement of the second slide member from the other end of the rocking member when the pre-closed door is opened, and to allow the movement of the one end of the rocking member to be rotated in the opposite rotational direction to the predetermined rotational direction by bringing the first slide member into contact with the one end of the rocking member, and configured to release the obstruction of movement of the other end of the rocking member and the second slide member by this operation.

[0008] Here, the swinging member is attached to the door support structure so as to be able to swing up and down in a seesaw-like manner within a predetermined range, with respect to a horizontal pivot axis, and the biasing means is configured to apply a biasing force that acts downward or upward at all times, thereby allowing the movement of the first slide member only from one end of the swinging member and preventing the movement of the second slide member from the other end of the swinging member when the pre-closed door is opened, and by bringing the first slide member into contact with one end of the swinging member, it is possible to move one end of the swinging member upward or downward, and this operation may release the obstruction of movement between the other end of the swinging member and the second slide member.

[0009] Furthermore, the swinging member is attached to the door support structure so as to be swingable within a predetermined range so as to rotate clockwise and counterclockwise around a vertical pivot axis, and the biasing means is configured to always apply a biasing force acting in the counterclockwise and clockwise directions so as to allow the movement of the first slide member only from one end of the swinging member when the pre-closed door is opened, and to prevent the movement of the second slide member from the other end of the swinging member, and it is also possible to move one end of the swinging member clockwise and counterclockwise by bringing the first slide member into contact with one end of the swinging member, and this operation is configured to release the obstruction of movement between the other end of the swinging member and the second slide member.

[0010] Furthermore, in the door closing sequence adjuster of the present invention, if a rolling element (such as a roller) is rotatably attached to the end of the oscillating member on the first slide member side, and the tip of one end of the oscillating member on the first slide member side is formed in an L-shape, it is preferable because it allows for smoother operation when the first slide member and the oscillating member come into contact, and allows for smoother oscillating operation of the oscillating member. Furthermore, a rolling element may be rotatably attached to the end of the oscillating member on the side of the second slide member, and the tip of the other end of the oscillating member on the second slide member may be formed in an L-shape.

[0011] Here, the L-shape refers to a shape that is approximately L-shaped when viewed from above or from the side, regardless of its dimensions. In addition to the L-shape, it may also be a shape obtained by rotating the L-shape by a predetermined angle, or a shape obtained by inverting the L-shape vertically and horizontally. Furthermore, it is even more preferable if the leading edge of the L-shaped portion is formed as an arc, with multiple stages of different inclination angles (preferably with the inclination angle becoming gentler towards the tip).

[0012] Furthermore, the present invention provides a double-leaf door (double-leaf door) comprising the above-mentioned pre-closed door and rear-closed door that rotate around a vertical axis, and the above-mentioned door closing order adjuster of the present invention, characterized in that the first arm member and the second arm member are attached to the pre-closed door and the rear-closed door, respectively.

[0013] Here, the door closing sequence adjuster of the present invention is intended for use with two doors that have a rabbet joint and whose closing order is predetermined. The door that closes first is referred to as the first-closing door, and the door that closes later is referred to as the second-closing door. There are no restrictions regarding the structure, material, shape, dimensions, etc., of the pre-closed and post-closed doors.

[0014] Furthermore, the door support structure is a structure such as a door frame provided above the door opening to allow the pre-closed door and the rear-closed door to be opened and closed. In the double-leaf door of the present invention, the pre-closed door and the rear-closed door are attached to the vertical door frames on the left and right sides of the door opening, and their respective ends are supported so as to be rotatable around the vertical axis, allowing them to be opened from both sides.

[0015] Furthermore, each arm member is a component that connects and interlocks the pre-closed and post-closed doors with each sliding member, and its form is not limited. In addition, there are no restrictions on the mounting structure and mounting position, as long as each sliding member operates appropriately in conjunction with the operation of the pre-closed and post-closed doors.

[0016] Furthermore, there are no restrictions on the shape of each sliding member, and the mounting method is not limited as long as it allows for smooth sliding. For example, it is possible to configure it to move freely along a guide rail, such as by suspending it from a guide rail laid on the door frame (upper door frame).

[0017] Furthermore, the pivoting member only needs to be mounted so as to be able to pivot around the pivot shaft, and its shape is not a requirement.

[0018] Furthermore, the biasing means is a means provided to apply a biasing force to one end of the oscillating member that is pressed by the first slide member, acting at all times in a predetermined rotational direction (regardless of the nature of the rotational surface, such as a vertical plane, horizontal plane, or inclined plane), and its type and mounting position are not limited to a torsion spring or the like.

[0019] According to the present invention, a door closing sequence adjuster and double doors can be made that do not impair aesthetics, as the door support structure is equipped with a swingable member that is swingably attached to the door support structure, a first slide member and a second slide member that are slidably supported by the door support structure, a first arm member attached to the first closed door and the first slide member, and a second arm member attached to the second closed door and the second slide member.

[0020] Also, according to the door closing order adjuster of the present invention, when the leading closed door is opened, the movement of the first slide member is allowed only from one end side of the swing member, and the movement of the second slide member can be inhibited from the other end side of the swing member. In addition, by bringing the first slide member into contact with one end of the swing member, it is possible to rotate one end of the swing member in a rotational direction opposite to the predetermined rotational direction due to the action of the biasing force, and by this operation, it is configured to be able to release the movement inhibition state between the other end of the swing member and the second slide member. Therefore, the movement of the trailing closed door is inhibited until the leading closed door is closed, so that the leading closed door is closed first. When the leading closed door is closed, the movement of the trailing closed door becomes possible, and the trailing closed door is closed. In this way, after the leading closed door is closed, it is possible to close the trailing closed door, so that the closing order of the leading closed door and the trailing closed door can be appropriately adjusted.

Effects of the Invention

[0021] According to the present invention, it is possible to provide a door closing order adjuster and a double-opening door that have a simple structure and do not impair the aesthetics after installation.

Brief Description of the Drawings

[0022] [Figure 1] It is a view showing the double-opening door of the present invention, (a) is a top view, and (b) is a front view. [Figure 2] It is a perspective view showing the door closing order adjuster of the present invention. [Figure 3] It is a view showing the door closing order adjuster of the present invention and the double-opening door of the present invention, (a) is a top view, and (b) is a cross-sectional view taken along the line X-X of the view (a). s [Figure 4] It is a perspective view schematically showing the operation (1) of the double-opening door and the closing order adjuster of the present invention. [Figure 5] It is a perspective view schematically showing the operation (2) of the double-opening door and the door closing order adjuster of the present invention. [Figure 6]This is a schematic perspective view showing the operation (3) of the double-leaf door and door closing sequence adjuster of the present invention. [Figure 7] This is a schematic perspective view showing the operation (4) of the double-leaf door and door closing sequence adjuster of the present invention. [Figure 8] This is a schematic perspective view showing the operation (5) of the double-leaf door and door closing sequence adjuster of the present invention. [Figure 9] This is a schematic perspective view showing a modified example of the double-leaf door and door closing sequence adjuster of the present invention. [Modes for carrying out the invention]

[0023] Hereinafter, with reference to the drawings, an embodiment of the door closing sequence adjuster R (hereinafter sometimes referred to as "this sequence adjuster") and the double door D (hereinafter sometimes referred to as "this double door") of the present invention, in which this sequence adjuster R is installed, will be described in detail. In the description of the drawings, the same elements are denoted by the same reference numerals, and redundant explanations are omitted. Furthermore, each component can be modified as appropriate, and details of the structure that are not directly related to the present invention will be omitted from the description. For the sake of explanation, we will use Figure 1(a) as a reference and assume that the first-closed door F and the second-closed door S rotate from top to bottom to close the door opening 3 described below. The same figure will also be used as a reference when explaining the left and right directions.

[0024] (1) Structure of the double-leaf doors The double-leaf door D of this embodiment includes a pre-closed door F and a rear-closed door S, and a sequence adjuster R (Figures 1(a), (b)). The pre-closed door F and the rear-closed door S are installed in the rectangular door opening 3 (the mounting area for the pre-closed door F and the rear-closed door S). Around the four sides of the door opening 3 are the horizontal door upper frame 4 and door lower frame 5, and the vertical door left vertical frame 6 and door right vertical frame 7, which are structures (door support structures) for supporting the pre-closed door F and the rear-closed door S. Furthermore, the upper door frame 4 has a narrow groove (not shown) formed in the longitudinal direction, and a guide rail 9 is provided along this narrow groove for sliding the first slide member 40 and the second slide member 50 of the main position adjuster R.

[0025] The front-closing door F and the rear-closing door S are each rectangular in shape, and hinge members (not shown) are attached to two locations, the top and bottom, on the vertical end face of the door's tail end. The left and right ends of the front-closing door F and the rear-closing door S are attached to the left vertical frame 6 and the right vertical frame 7 via these hinge members, allowing the front-closing door F and the rear-closing door S to rotate freely around a vertical axis and to open both doors (double doors). Furthermore, the first-closing door F and the second-closing door S have a rabbet joint that forms a hook shape on the door edge when viewed from above. The hook-shaped portion F1 of the first-closing door F is longer on the side opposite the door opening portion (the side where both doors are opened; the same applies hereinafter), while the hook-shaped portion S1 of the second-closing door S is longer on the side facing the door opening portion.

[0026] (2) Structure of the main adjustment device The main adjustment device R consists of a main body 10, a first arm 31 (first arm member), a second arm 32 (second arm member), a first slide member 40, and a second slide member 50 (Figures 2, 3(a), (b)), and is inserted into the center of the narrow groove in the upper door frame 4.

[0027] The main body 10 consists of a swinging member 11, a first roller 21 (rolling element) and a second roller 22 (rolling elements) (two rollers), a torsion spring 23 (biasing means), and a housing 25.

[0028] The oscillating member 11 mainly consists of two rectangular end plates 12, each with an arc-shaped upper and lower central section and semicircular ends, a central axis 13 (support axis), and roller supports 14 and 15. A central hole 12a is formed in the center of each rectangular end plate 12. With the central hole 12a aligned with the circular holes (not shown) provided on each longitudinal side surface (hereinafter referred to as "long side surface 25a") of the housing 25 described below, a central shaft 13 is inserted through both holes so that its axis is located horizontally, and the central shaft 13 is pivotally supported between the long side surfaces 25a on both sides.

[0029] Furthermore, at both ends of the rocking member 11, the first roller 21 and the second roller 22 are pivotally supported between the two rectangular end plates 12 of the rocking member 11. That is, the first roller 21 and the second roller 22 are pivotally supported by rod-shaped roller supports 14 and 15, with their axes positioned horizontally (hereinafter, the end of the rocking member 11 on the side where the first roller 21 is provided may be referred to as the "first end 11a," and the end on the side where the second roller 22 is provided may be referred to as the "second end 11b").

[0030] A rod-shaped locking body 16 is installed between the central hole 12a and the first end 11b (in this embodiment, the end on the left vertical frame 6 side of the door, but a desired end can be selected depending on the type of biasing means) of the two rectangular end plates 12. A torsion spring 23 is wound between the central axis 13 and the locking body 16, and this structure is designed to constantly apply a biasing force acting vertically downward to the first end 11a (the end on the left vertical frame 6 side of the door, to which the first slide member 40 abuts) of the swinging member 11. Furthermore, when the first closed door F and the rear closed door S are open, the oscillating member 11 is inclined so that its first end 11a is positioned downwards. Even if the second sliding member 50 comes into contact with the second end 11b of the oscillating member 11, the oscillating member 11 cannot be rotated toward the first end 11a (counterclockwise in Figure 2).

[0031] The storage body 25 is a hollow, elongated, roughly rectangular parallelepiped, with each of its long sides attached to the central side of the inner surface of the narrow groove of the door upper frame 4. The storage body 25 has openings formed in a certain range from the side of the left vertical frame 6 of the door in the short direction and from the lower corner of that side, as well as openings formed in a certain range from the side of the right vertical frame 7 of the door in the short direction and from the upper corner of that side.

[0032] Furthermore, a cylindrical support 26 is suspended horizontally between the two long sides 25a of the housing 25, below the central axis 13, and the arc portion of the swinging member 11 slides against the support 26, allowing the swinging member 11 to swing up and down in a seesaw-like manner within a predetermined angular range with the central axis 13 as the pivot point.

[0033] In the opening on the lower surface described above, the first roller 21 is exposed to the outer surface of the housing 25 and can come into contact with the L-shaped portion 45 at the tip 43 of the first slide member 40, as described later. Also, in the opening on the upper surface described above, the second roller 22 is exposed to the outer surface of the housing 25 and can come into contact with the rotating L-shaped portion 55 at the tip 53 of the second slide member 50, as described later.

[0034] Furthermore, a cylindrical restricting body 27 is suspended between the two long sides 25a of the housing 25, close to the right vertical frame 7 of the door of the support 26, to restrict the rotation of the swinging member 11. The swinging member 11 comes into contact with the restricting body 27, preventing it from rotating downwards.

[0035] Furthermore, between the two long sides 25a of the storage body 25, a cylindrical body 28 is provided horizontally near the upper edge on the left vertical frame 6 side of the door, which slides against the first roller 21. Also, between the two long sides 25a of the storage body 25, a cylindrical body 29 is provided horizontally near the upper edge on the right vertical frame 7 side of the door, which slides against the second roller 22.

[0036] The first sliding member 40 is provided to slide freely along the guide rail 9 on the left vertical frame 6 side of the door, and the second sliding member 50 is provided to slide freely along the guide rail 9 on the right vertical frame 7 side of the door. The first slide member 40 mainly consists of a long, narrow plate-shaped connector 41 and a base end 42 and a tip end 43 provided at both ends of the connector 41 (Figure 4). The base end 42 (the end on the left vertical frame 6 side of the door) is formed in the shape of a rectangular parallelepiped. The tip end 43 is formed from a rectangular parallelepiped-shaped part 44 and an L-shaped part 45 at its tip. The L-shaped part 45 is formed in a roughly L-shape when viewed from the side, and the very tip has a tapered part 45a formed so that a downward-sloping surface is formed. This tapered part 45a is formed by combining two inclined surfaces with different inclination angles so that the inclination angle becomes gentler towards the tip.

[0037] The second slide member 50 mainly consists of a long, narrow plate-shaped connecting body 51 and a base end 52 (the end on the right vertical frame 7 side of the door) and a tip end 53 provided at both ends of the connecting body 51 (Figure 4). The base end 52 is formed in the shape of a rectangular parallelepiped. The tip end 53 is formed from a rectangular parallelepiped-shaped part 54 and a rotating L-shaped part 55 at its tip, and the rotating L-shaped part 55 is formed in a manner in which the L-shape is rotated 180 degrees when viewed from the side.

[0038] One end of the first arm 31 is rotatably attached by a pin 34 near the upper edge end on the tail end side of the first closed door F, and the other end is rotatably attached by a pin 34 to the base end 42 side of the connecting body 41 of the first slide member 40. With this configuration, the first slide member 40 is able to slide along the guide rail 9 in accordance with the movement of the first closed door F and the first arm 31.

[0039] One end of the second arm 32 is rotatably attached by a pin 35 near the upper edge end on the tail end side of the rear closing door S, and the other end is rotatably attached by a pin 35 to the base end 52 side of the connecting body 51 of the second slide member 50. With this configuration, the second slide member 50 is able to slide along the guide rail 9 in accordance with the movement of the rear closing door F and the second arm 32.

[0040] With the above structure, when the pre-closed door F is opened, the second end 11b of the oscillating member 11 and the tip of the rotating L-shaped portion 55 of the second sliding member 50 come into contact, thereby inhibiting the sliding movement of the second sliding member 50 (the movement of the first sliding member 40 is permitted only from the first end 11a side of the oscillating member 11, while the movement of the second sliding member 50 is inhibited from the second end 11b side of the oscillating member 11). In addition, the first sliding member 40 comes into contact with the first end 11a of the oscillating member 11, and the L-shaped portion 45 applies an upward (clockwise) rotational force to the oscillating member 11, allowing the first end 11a of the oscillating member 11 to rotate upward. This rotational movement then releases the contact between the second end 11b of the oscillating member 11 and the second sliding member 50.

[0041] Furthermore, as the first slide member 40 slides, the first roller 21 comes into contact with the tapered portion 45a at the tip 43 of the first slide member 40, and then moves along the upper surface of the tapered portion 45a to the upper surface of the L-shaped portion 45, thereby closing the pre-closed door F.

[0042] Furthermore, the contact between the tip of the rotating L-shaped portion 55 at the tip 53 of the second slide member 50 and the second end 11b of the swing member 11 is released, and the rear closing door S is closed after the second slide member 50 has slid a predetermined distance.

[0043] (3) Operation of the priority adjuster when the double doors are closed When closing the double doors D, there are two cases: one in which the rear door F attempts to close before the front door S (including cases where both doors close simultaneously), and another in which the front door F attempts to close before the rear door S. The operation of the priority adjuster R in each case is described below.

[0044] [When the rear-closing door attempts to close before the front-closing door.] If the rear-closed door S is about to close before the front-closed door F, the leading edge of the rear-closed door S rotates to the vicinity of the door opening 3. Then, in conjunction with the movement of the second arm 32 attached to the rear-closed door S, the second sliding member 50 attached to the second arm 32 also slides along the guide rail 9 toward the center of the door opening 3 (towards the leading edge of the rear-opening door S) (Figure 4).

[0045] At this time, since the second end 11b of the oscillating member 11 is positioned upward, the rotating L-shaped portion 55 at the tip 53 of the second sliding member 50 comes into contact with the second end 11b of the oscillating member 11. The rotation of the second end 11b of the oscillating member 11 toward the first end 11a is restricted, and the second end 11b cannot be oscillated (rotated / moved) downward, thus hindering the sliding movement of the second sliding member 50. As a result, the movement of the second arm 32 attached to the second sliding member 50 and the rear closing door S to which the second arm 32 is attached is also hindered, and they remain in a waiting state in that position (Figure 5).

[0046] If the closing operation of the pre-closed door S continues in this state, its leading edge will rotate to the vicinity of the door opening 3. Then, in conjunction with the movement of the first arm 31 attached to the pre-closed door F, the first sliding member 40 attached to the first arm 31 also slides along the guide rail 9 toward the center side of the door opening 3 (towards the leading edge side of the pre-opened door) (Figure 6).

[0047] Then, the tip of the first slide member 40 comes into contact with the first end 11a of the oscillating member 11 located below it, and moves to the center to close the pre-closed door F, while simultaneously rotating (moving) the oscillating member 11 upward. This rotational movement causes the second end 11b of the oscillating member 11 to move downward, releasing the contact (movement obstruction) state of the second oscillating member 11.

[0048] Subsequently, the first end 11a of the oscillating member 11 moves along the upper surface of the tapered portion 45a of the first sliding member 40 to the upper surface of the L-shaped portion 45, and the pre-closed door F is closed (Figure 7). Then, as the pre-closed door F is closed, the second slide member 50 slides to the center, and the second arm 32 attached to the second slide member 50 and the rear-closed door S to which the second arm 32 is attached are closed (Figure 8).

[0049] [When the door that closes first is about to close before the door that closes later] If the first closing door F is to be closed before the second closing door S, the priority adjuster R will operate in the same way as when the second closing door S is in standby mode. Therefore, because the first closing door F is closed first, the sliding movement of the second sliding member 50 of the second closing door S, which starts its closing operation later, is not restricted, and the second closing door S will be closed without any problems.

[0050] When the rear-closed door S and the front-closed door F are opened, the second slide member 50 and the first slide member 40 move in the direction of the right vertical frame 7 and the left vertical frame 6 of the door, thereby releasing the contact between the tip 43 of the first slide member 40 and the first end 11a of the swinging member 11. As a result, the biasing force of the torsion spring 23 causes the first end 11a to return to a downward position.

[0051] (4) Effects of the double-leaf doors and the position adjuster According to this priority adjuster R, when the pre-closed door F is opened, the second end 11b of the oscillating member 11 and the second sliding member 50 come into contact, thereby hindering the sliding movement of the second sliding member 50. In addition, the first sliding member 40 comes into contact with the first end 11a of the oscillating member 11 (applying an upward pressing force to the first end 11a), which allows the first end 11a of the oscillating member 11 to rotate (move) upward. This rotational movement is configured to release the contact between the second end 11b of the oscillating member 11 and the second sliding member 50.

[0052] Therefore, until the first closing door F is closed, the movement of the second closing door S is hindered, and the first closing door F closes first. Then, once the first closing door F is closed, the second closing door S becomes able to move and closes. In this way, it is possible to ensure that the second closing door S closes after the first closing door F has closed, making it possible to appropriately adjust the closing order of the first closing door F and the second closing door S.

[0053] Furthermore, in this position adjuster R, since the first roller 21 and the second roller 22 (rolling elements) are rotatably attached to both ends of the oscillating member 11, the sliding motion of the first slide member 40 and the second slide member 50 can be made smooth when in contact with the oscillating member 11. Furthermore, an L-shaped portion 45 is provided at the tip of one end of the first slide member 40 of the oscillating member 11, and at its very tip, a tapered portion 45a is formed with two different inclination angles, such that the inclination angle becomes gentler as it moves towards the tip. As a result, the first slide member 40 comes into contact with the L-shaped portion 45 of the first end 11a of the oscillating member 11, and the first roller 21 can easily roll on the upper surface of the L-shaped portion 45, thereby enabling smooth and effective application of upward rotational force to the oscillating member 11.

[0054] Furthermore, since it includes a swinging member 11 inserted into a narrow groove of the door upper frame 4, a first sliding member 40 and a second sliding member 50 slidably supported on the guide rail 9 of the door upper frame 4, a first arm 31 attached to the first closed door F and the first sliding member 40, and a second arm 32 attached to the rear closed door S and the second sliding member 50, it is possible to provide a door position adjuster R and double-leaf door D that do not impair aesthetics.

[0055] (5) Modified versions of the main adjustment device and the main double-leaf door A modified version of the main priority adjuster R' and the main double-leaf door D' to which the main priority adjuster R' is attached will be described (Figure 9). In the modified version of the main priority adjuster R', only the first slide member 40' and the second slide member 50' are different, and the manner in which the main priority adjuster R' is attached to the narrow groove of the upper door frame 4 is also different.

[0056] The first slide member 40' and the second slide member 50' mainly consist of an elongated plate-shaped connecting body 41', 51' and base ends 42, 52 and tip ends 43, 53 provided at both ends of the connecting body 41', 51'. Mounting portions 41a', 51a' for the first arm 31 and the second arm 32 are provided protruding from the intermediate portion of the connecting body 41', 51'. The structure of the main body 10 of the main adjustment device R' is the same as in the above embodiment, but with the housing 25 rotated 90 degrees, its upper surface is attached to the side of the narrow groove of the door upper frame 4, and the central axis 13 is oriented vertically.

[0057] The first slide member 40' and the second slide member 50' are also the same as the first slide member 40 and the second slide member 50 of the above embodiment, rotated by 90 degrees, with the lower edge of the L-shaped portion 45' located on the opposite side of the opening of the first closed door F, and the upper edge of the rotated L-shaped portion 55' located on the opening side of the rear closed door S. Furthermore, the oscillating member 11 is constantly subjected to a counterclockwise biasing force by the torsion spring 23. In addition, the first arm 31 and the second arm 32 are rotatably attached by pins 34 and 35 at the mounting portion 41a' of the first slide member 40' and the mounting portion 51a' of the second slide member 50'.

[0058] With the above configuration, the first sliding member 40' is provided to slide freely along the guide rail 9 on the left vertical frame side of the door (not shown), and the second sliding member 50' is provided to slide freely along the guide rail 9 on the right vertical frame side of the door (not shown). Furthermore, the other components, including the pre-closed door F and the rear-closed door S, are the same as those in the main order adjuster R and the double-opening door D of the above embodiment.

[0059] The same effects and advantages as those of the above-described embodiment can be achieved with the current priority adjuster R' and the double-leaf door D'.

[0060] Although an example of a preferred embodiment of the present invention has been described above, the present invention is not limited to this embodiment, and the design can be modified as appropriate without departing from the spirit of the invention.

[0061] In this embodiment of the position adjuster, a structure has been described in which a biasing force is applied vertically downward to one end of the oscillating member on the side that the first slide member contacts. However, a structure in which a biasing force is applied vertically upward to one end of the oscillating member on the side that the first slide member contacts can also be used. However, in this case, the structure of the tip portions of the first slide member and the second slide member must be configured such that they can contact the oscillating member appropriately, for example, by making the tip portion of the first slide member an inverted L-shape with the top and bottom reversed, and the tip portion of the second oscillating member an inverted L-shape with the left and right reversed (in a side view, respectively).

[0062] Furthermore, in the modified version of the adjustment device described above, a structure was described in which a biasing force is applied to one end of the oscillating member on the side that the first slide member contacts in a direction that causes the oscillating member to rotate counterclockwise. However, it is also possible to have a structure in which a biasing force is applied to one end of the oscillating member on the side that the first slide member contacts in a direction that causes it to rotate clockwise. However, in this case, the structure of the tip portions of the first slide member and the second slide member must be configured such that they can contact the oscillating member appropriately, for example, by making the tip portion of the first slide member an inverted L-shape with the top portion inverted vertically, and the tip portion of the second oscillating member an inverted L-shape with the bottom portion inverted horizontally (both viewed from above).

[0063] Furthermore, the present invention exemplifies the minimum necessary components, and other necessary components may be added as long as they do not hinder its effects. Moreover, various components can be used for the pre-closed and rear-closed doors, first arm member and second arm member, first slide member and second slide member, oscillating member, biasing means and rolling elements described in the claims, as long as they have a basic configuration and perform their effects. [Explanation of symbols]

[0064] D, D' Double doors F first closed door S Rear closing door R,R' Door closing order adjuster (rank adjuster) 3 Door opening 4. Upper frame of the door 5. Bottom frame of the door 6. Left vertical frame of the door 7. Right vertical frame of the door 9 Guide rails 10 Main body 11. Oscillating member 11a First end 11b Second end 13 Center axis (support axis) 21. First roller (rolling element) 22. Second roller (rolling element) 23 Torsion spring (biasing means) 25 containment units 31 First arm (first arm member) 32. Second arm (second arm member) 40,40' First slide member 41,41' Connector 43 Tip 45 L-shaped part 45a Tapered section 50,50' Second slide member 51,51' Connector 53 Tip 55 Rotating L-shaped part

Claims

1. In a door closing sequence adjuster that adjusts the closing sequence of a pre-closed door and a post-closed door that rotate around a vertical axis, A first arm member attached to the front-closing door, and a second arm member attached to the rear-closing door, A first slide member attached to the first arm member and supported by the door support structure so as to be slidable in accordance with the movement of the first arm member, and a second slide member attached to the second arm member and supported by the door support structure so as to be slidable in accordance with the movement of the second arm member, A swinging member is attached to the aforementioned door support structure so as to be able to swing within a predetermined range about a pivot shaft, The device comprises a biasing means for applying a biasing force acting in a predetermined rotational direction to one end of the rocking member that is pressed by the first slide member, When the aforementioned pre-closed door is opened, the first slide member is allowed to move only from one end of the swinging member, and the movement of the second slide member is prevented from the other end of the swinging member. A door closing sequence adjuster is characterized in that, by bringing the first slide member into contact with one end of the rocking member, it is possible to rotate one end of the rocking member in a rotational direction opposite to the predetermined rotational direction, and this operation is configured to release the obstruction between the movement of the other end of the rocking member and the second slide member.

2. A rolling element is rotatably attached to the end of the rocking member on the side of the first slide member, The door closing sequence adjuster according to claim 1, characterized in that the tip of one end of the oscillating member in the first slide member is formed in an L-shape.

3. The aforementioned front-closing door and rear-closing door rotate around a vertical axis, A door closing sequence adjuster according to claim 1 or claim 2, comprising: A double-hinged door characterized in that the first arm member and the second arm member are attached to the first-closed door and the rear-closed door, respectively.

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