JP2006161452A - Hinge for double swinging door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To apply return closing force by a spring up to a predetermined angle in opening a double swinging door in either right or left direction, but to freely open and stop the door without applying return closing force by the spring when opening the door at the predetermined angle or more. <P>SOLUTION: This hinge for the double swinging door comprises a cylindrical casing 32; a spring shaft 34 coaxially set into the cylindrical casing and relatively turnable; a coil spring 36 set between the cylindrical casing and the spring shaft; and a driving member 42 fixed to the door to turn the cylindrical casing when the door is opened to either right or left side and to turn the spring shaft when the door is opened to the other side. When the door is opened to one side, the spring shaft is fixed, and when the door is opened to the other side, the cylindrical casing is fixed. When the door is opened at the predetermined angle or more, the cylindrical casing and the spring shaft are integrally rotated to cause no deformation of the spring. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a hinge for double doors, and in particular, a closing (returning) action by a spring works until a predetermined opening angle. The present invention relates to a hinge for double doors that can be used.

A double door hinge with a built-in door, which is closed by the action of a coil spring even when the door opens in either the left or right direction and has a hydraulic braking function for the door to be closed back has been developed ( Patent Document 1).
JP 2004-239046 A

  In the double door hinge, the coil spring is wound up to close the door with the elastic (spring) force accumulated even when the door is opened in either the left or right direction. In the case of doors with hinges installed so far, when the door is opened, the spring force to return it is always applied, so the door is opened and stopped without the spring acting. I couldn't.

  In the present invention, the return closing action by the spring force works until a predetermined opening angle, but when the door is opened further, the spring force is not actuated so that the door can be freely opened. It aims at providing the hinge for double doors.

That is, the hinge for double doors according to the present invention,
A double door hinge (10) attached to a left and right double door and pivotally supporting the door about a vertical pivot (denoted by reference numeral P in the following description of the embodiment),
A fixed support leg (12) set perpendicularly to the door opening upper frame or lower frame along the pivot axis;
A first pivot member pivotably mounted about the pivot axis (implemented as a cylindrical casing 32 in the same embodiment);
A second pivot member (implemented as a spring shaft 34) pivotally mounted about the pivot axis;
A spring having one end fixed to the first pivot member and the other end fixed to the second pivot member (in this embodiment, implemented as a coil spring 36);
When the door is opened to one of the left and right double doors, the first pivot member is rotated around the pivot shaft, and when the door is opened to the other of the left and right double doors, the second pivot member is turned on the pivot shaft. Rotating means for rotating around (in the same embodiment, the cylindrical base 30 provided with the driving member 42, the first driven member 46 fixed to the cylindrical casing 32, and the second driven member fixed to the spring shaft 34) A drive member 52),
When the door is opened to the one of the left and right double doors, the second pivot member is connected to the fixed support leg and fixed around the pivot until the door rotates to a predetermined angle. When pivoting as described above, the second pivot member is released from the fixed support leg and coupled to the first pivot member, and the second pivot member is moved around the pivot axis. The first fixing / rotating means (first to third rollers 18-1, 18-2, 18-3, first, second, fourth to seventh recesses 20, 22) that can rotate integrally with the first and third rollers. , 30-4, 30-5, 30-6, 30-7), and
When the door is opened to the other of the left and right double doors, the first pivot member is connected to the fixed support leg and fixed around the pivot until the door rotates to a predetermined angle. When pivoting as described above, the first pivot member is disconnected from the fixed support leg and connected to the second pivot member so that the first pivot member is moved around the pivot axis. And second fixing / rotating means (first to third rollers 18-1, 18-2, 18-3, first to seventh recesses 20, 22, 24, 30-4, 30- 5, 30-6, 30-7)
It is characterized by having.

In particular,
The first pivot member and the second pivot member have first and second driven parts (46, 52) set at intervals in the circumferential direction of the pivot axis, respectively.
When the rotating means is fixed to the door and has a driving member (42) set between the first and second driven members, the driving member is opened to the one of the left and right double doors. Engaging the first driven part of the first pivot member, rotating the first pivot member around the pivot axis, and when the door is opened to the other of the left and right double openings, The second pivot member can be engaged with the second driven portion to rotate the second pivot member around the pivot axis.

More specifically,
The second pivot member is vertically aligned with the fixed support leg and is a spring shaft (34) extending along the pivot axis;
The first pivot member is a cylindrical casing (32) concentrically set around the spring shaft;
The spring is set to be spiral around the pivot, one end is fixed to the spring shaft, and the other end is a coil spring (36) fixed to the cylindrical casing.
The fixed support leg has a columnar part (second small diameter part 12-4) extending along the pivot,
The pivoting means is concentric around the cylindrical part, is pivotable and has a cylindrical base (30) connected to the door;
The second driven portion (52) is a portion extending from the spring shaft (34) in the cylindrical base portion in the axial direction,
The first driven portion (46) is a portion extending from the cylindrical casing (32) in the cylindrical base portion in the axial direction,
The driving member (42) may be formed so as to protrude radially inward from the inner surface of the cylindrical base and be positioned between the first and second driven parts (46, 52).

More specifically, the fixing / rotating means is
The cylindrical portion of the fixed support leg has a first recess (20) provided at a predetermined interval in the circumferential direction, and a second recess (22) provided at an interval in the left and right directions of the first recess. And a third recess (24),
The cylindrical base of the rotating means includes a fifth recess (30-4) and a fourth recess (30-5) that are aligned in the radial direction with the second recess and the third recess, respectively, when the door is closed, A sixth recess (30-6) and a seventh recess (30-7) that are spaced apart from the first recess in the circumferential direction than the fifth and fourth recesses, respectively,
The first driven member between the columnar portion of the fixed support leg and the cylindrical base portion of the rotating means is arranged in a radial direction between the second recess and the fifth recess when the door is closed. Having a first through hole (46-1) penetrating;
The second driven member between the columnar portion of the fixed support leg and the cylindrical base portion of the rotating means is arranged in a radial direction between the third recess and the fourth recess in a state where the door is closed. Having a second through hole (52-1) penetrating;
Further, the fixing / rotating means is
Provided between the columnar portion of the fixed support leg and the cylindrical base portion of the rotating means, and is located between the first and second driven members when the door is closed, and is fitted in the first recess. A first locking member (first roller 18-1) to be combined,
A second lock member (second roller 18-2) movable in the radial direction in the first through hole;
A third lock member (third roller 18-3) movable in the radial direction in the second through hole;
Have
When the door is rotated to the one side, the first lock member is fitted into the first recess of the fixed support leg so that the second pivoting member is engaged with the first lock member and does not rotate. In addition, the second lock member is detached from the second recess of the fixed support leg and partially fits into the fifth recess of the cylindrical base to rotate the cylindrical base and the first pivot member together. When the door is rotated by the predetermined angle, the fourth recess is aligned with the first lock member in the radial direction and the sixth recess is aligned with the third lock member in the radial direction. When rotating to one side, the first lock member is detached from the first recess and partially fitted into the fourth recess, and the third lock member is partially fitted into the sixth recess, The first and second pivot members are the second lock member, the cylindrical base, and the third rod It adapted to integrally rotated around the fixed support legs are connected via a click member,
When the door is rotated to the other side, the first lock member is fitted into the first recess of the fixed support leg so that the first pivoting member engages with the first lock member and does not rotate. In addition, the third lock member is detached from the third recess of the fixed support leg and is partially fitted into the fourth recess of the cylindrical base to rotate the cylindrical base and the second pivoting member together. When the door is rotated by the predetermined angle, the fifth recess is aligned with the first lock member in the radial direction, and the seventh recess is aligned with the second lock member in the radial direction. When rotating to one side, the first lock member is detached from the first recess and partially fits in the fifth recess, and the second lock member is partially fit in the seventh recess, The first and second pivot members are the second lock member, the cylindrical member, and the third rod It can be made to rotate integrally linked to via the click member around the fixed supporting leg.

Also,
The fixed support leg is fixed to the lower frame of the door opening,
A cylindrical casing as the second pivot member extends in the axial direction at a position above the fixed support leg;
The spring shaft extends in the axial direction at a position above the cylindrical portion of the fixed support leg;
The hinge for the double door is further
A damper cylinder fixed to the upper end of the spring shaft, extending upward on the inside of the cylindrical casing and defining a sealed damper chamber for storing the damper liquid therein;
A piston (56) that is hermetically slidably engaged with the inner wall surface of the damper cylinder and separates the inside of the damper cylinder into an upper chamber (50-1) and a lower chamber (50-2);
A piston rotation drive unit (58) fixed to the upper end portion of the cylindrical casing (32) and extending downward from the upper end of the damper cylinder into the upper chamber and connected to the piston;
When the door moves in the opening direction and the closing direction, and the cylindrical casing as the first pivoting member and the spring shaft as the second pivoting member relatively rotate, the piston rotation driving unit moves to the damper. Piston lifting means that causes the piston to move up and down in the damper chamber by rotating relative to the cylinder, respectively (screw engagement between the outer peripheral surface of the piston and the inner peripheral surface of the damper cylinder in the embodiment) And a first fluid passage (56-2) provided in the piston to allow fluid to flow from the lower chamber to the upper chamber when the piston descends in the damper chamber,
When the piston moves up in the damper chamber, fluid is allowed to flow from the upper chamber to the lower chamber, and when the piston moves down in the damper chamber, fluid is prevented from flowing from the lower chamber to the upper chamber. A second fluid passage (64) with a check valve;
A manual adjustment portion attached to an upper end of the double door hinge and the manual adjustment portion extends through the piston rotation drive portion to the first fluid passage, and the flow of the first fluid passage through the manual adjustment portion. And a flow path resistance adjusting member (60) including an adjusting portion for adjusting the path resistance.

In this case, the piston rotation drive unit is connected so as not to rotate relative to the piston and to move up and down relatively,
The piston is screw-engaged with the inner peripheral surface of the damper cylinder, and when the piston is rotationally driven by the piston rotation driving unit, the piston moves up and down in the cylinder by screw engagement with the inner peripheral surface of the cylinder. Can be.

Since the hinge according to the present invention is configured as described above, when the door is opened at a predetermined angle or more, the return closing force by the spring does not act, so that the door can be freely opened without the resistance of the spring. it can.
In addition, since the door double hinge according to the present invention is attached to the lower frame portion, when adjusting the flow path resistance of the damper chamber by the manual adjustment portion, compared with the hinge attached to the upper frame portion, The manual adjustment unit can be easily operated. In addition, since the damper chamber is provided at the upper part of the door return closing means, the structure of the hinge should be simple and compact as compared with the damper chamber provided at the lower part of the door return closing means. Can do. Furthermore, when the damper chamber is provided, the lower chamber is a high pressure chamber, so that troubles due to air intrusion into the high pressure chamber can be minimized.

Hereinafter, embodiments of a hinge for double doors according to the present invention will be described with reference to the drawings.
FIG. 1 is a view showing a state in which a double door D which is rotatable around a pivot line P extending vertically by a double door hinge 10 according to the present invention is in a closed position. That is, the door D is disposed along the pivot axis P at the lower position thereof, and is installed in the door D and supported by the door opening lower frame portion L (hereinafter, simply referred to as “hinge”). ) 10 and a top pivot T provided at the upper part of the door D and pivotally attached to the door opening upper frame part U.

  FIG. 2 is an enlarged vertical sectional view of the hinge 10 of FIG. As shown in the figure, the hinge 10 includes a fixed support leg 12 that is supported by a seat S (FIG. 1) embedded in the door opening lower frame portion L so as not to rotate around the pivot axis P, and the support. A hinge mounting plate 14 mounted on the leg 12 and mounted on the support leg 12 so as to be rotatable relative to the support leg 12 about the pivot line P and extending horizontally, and the door D is closed. A coil spring mechanism 16 for providing a return force for returning the door to the closed position when the door is opened to the left and right from a position, and a damper mechanism 18 for providing a fluid braking force when the door D is returned to the closed position after the door D is opened. Have.

  FIG. 3 shows the fixed support leg 12 and the coil spring mechanism 16 in an exploded manner. As shown in the drawing, the fixed support leg 12 includes a lower portion 12-1 inserted and fixed to the seat S, a large diameter portion 12-2, a first small diameter portion 12-3, A second small diameter portion 12-4 is provided.

  A thrust bearing 15 is set at a step between the large diameter portion 12-2 and the first small diameter portion 12-3, and a coil spring mechanism is provided so as to surround the first small diameter portion 12-3 on the thrust bearing 15. A portion 16 is placed and is rotatable about the pivot axis P with respect to the fixed support leg 12.

  The first, second and second rollers 12-1, second roller 18-2, and third roller 18-3, which will be described later with reference to FIG. Three recesses 20, 22, 24 are provided.

  The coil spring mechanism 16 is attached to the cylindrical base 30 concentrically on the cylindrical base 30 and the cylindrical base 30 that is rotatable about the pivot line P on the fixed support leg 12. A cylindrical casing 32 that is relatively rotatable around the pivot axis P, and is concentrically mounted in the cylindrical casing 32, and around the pivot axis P with respect to the cylindrical casing. And a coil spring 36 set around the spring shaft 34.

  The cylindrical base 30 has a large-diameter portion 30-1, a first small-diameter portion 30-2, and a second small-diameter portion 30-3 in order from the bottom, and on the outer periphery of the lower end of the large-diameter portion 30-1. A base end ring portion 14 'of the hinge mounting plate 14 is fixed, a bearing member 40 is provided on the outer periphery of the second small diameter portion 30-3, and a drive which will be described later with reference to FIG. The member 42 is fixed. In addition, fourth to seventh recesses 30-4, 30-5, 30-6, and 30-7 that receive rollers described later with reference to FIG. 5 are provided on the inner peripheral surface of the cylindrical base. .

  The lower end of the cylindrical casing 32 is placed on the step portion between the large diameter portion 30-1 and the first small diameter portion 30-2 of the cylindrical base 30, and extends to the upper end of the hinge 10. The cylindrical base 30 can be rotated around the pivot P. A first driven member 46 described later with reference to FIGS. 4 and 5 is fixed to an inner peripheral surface near the lower end of the cylindrical casing 32 via a cylindrical fixing member 48. As can be seen from FIGS. 4 and 5, the first driven member 46 extends in an angle range of about 60 degrees around the pivot line P and extends in the pivot line P direction to increase the diameter of the cylindrical base 30. 30-1 is extended. A first through hole 46-1 is provided at the center of the first driven member 46 as seen in FIGS. 4 and 5, and the second roller 18-2 is accommodated so as to be displaceable in the radial direction. It is.

  The diameter of the upper end portion 34-1 of the spring shaft 34 is enlarged, and the spring shaft 34 is fixed to the lower end so as to close the lower end of the damper cylinder 50 constituting the damper mechanism 18. The upper end portion 34-1 is rotatably supported on a shaft support portion 60 fixed on the inner peripheral surface of the cylindrical casing 32 via a thrust bearing 54. The lower end 34-2 is substantially in contact with the upper end of the second small diameter portion 12-4 of the fixed support leg 12. A second driven member 52 extending in parallel with the pivot axis P is fixed to the lower end 34-2 of the spring shaft 34, and the second driving member 52 is fixed around the second small diameter portion 12-4 of the fixed support leg 12 as described above. Like the driven member 46, it extends in an angle range of about 60 degrees, and a second through-hole 52-1 for accommodating the third roller 18-3 so as to be displaceable in the radial direction is formed at the center thereof. . The coil spring 36 has a lower end fixed to the spring shaft 34 and an upper end fixed to the cylindrical casing 32.

  As shown in FIG. 2, the damper mechanism 18 has a general-purpose mechanism, is fixed to the upper end of the spring shaft 34, extends upward inside the cylindrical casing 32, and is sealed to store the damper liquid therein. The aforementioned damper cylinder 50 that defines the damper chamber, and a piston 56 that is hermetically slidably engaged with the inner wall surface of the damper cylinder 50 and separates the damper cylinder 50 into an upper chamber 50-1 and a lower chamber 50-2. And a piston rotation drive member 58 fixed to the upper end portion of the cylindrical casing 32 and extending downward from the upper end of the damper cylinder 50 into the upper chamber 50-1 and connected to the piston 56. The piston rotation drive member 58 is spline-coupled to the piston 56, and the piston 56 cannot rotate relative to the piston rotation drive member 58 but can move up and down. In the illustrated example, the piston 56 has a cylindrical shape, and is separated into an upper chamber 50-1 and a lower chamber 50-2 by a separation member 56-1 attached to an inner lower end thereof. The upper chamber 50-1 is vertically separated by a portion of the piston rotation drive member 58 splined to the piston 56, but is fluidly communicated via the spline coupling portion. The piston 56 is screw-engaged with the inner peripheral surface of the damper cylinder 50. When the piston 56 is rotationally driven by the piston rotation driving member 58, the piston 56 is not displaced in the vertical direction due to screw engagement with the inner peripheral surface of the damper cylinder 50. ) The cylinder 50 is moved up and down. Specifically, the piston rotation drive member 58 rotates relative to the damper cylinder 50 when the door D moves in the closing direction and the cylindrical casing 32 and the spring shaft 34 rotate relative to each other. As a result, the piston 56 rotates relative to the damper cylinder 50, thereby moving down in the damper chamber.

  The piston 56 is provided with a first fluid passage for allowing fluid to flow from the lower chamber 50-2 to the upper chamber 50-1 when the piston 56 descends in the damper chamber. In the example, it is provided in the center of the separating member 56-1 so as to extend along the pivot line P, and the through hole 56-2 forms this. A flow path resistance adjusting member 60 is passed through the through-hole, and the flow path resistance adjusting member 60 is moved in the vertical direction by rotating a manual rotation adjusting member 61 provided at the upper end of the hinge 10. By changing the position in the vertical direction, the flow passage resistance of the through hole, that is, the first fluid passage can be adjusted. The piston 56 allows fluid to flow from the upper chamber 50-1 to the lower chamber 50-2 when it rises in the damper chamber, and when it descends, from the lower chamber 50-2 to the upper chamber 50. A second fluid passage 64 with a check valve is provided to prevent fluid from flowing to -1.

  4, the driving member 42 fixed to the cylindrical base 30 is fixed to the first driven member 46 fixed to the cylindrical casing 32 and the spring shaft 34. The intermediate driven position of the second driven member 52 is set so as to contact both members. In the same state, as shown in FIG. 5, the first roller 18-1 is formed in the first recess 20 provided in the second small diameter portion 12-4 of the fixed support leg 12 by the inner peripheral surface of the cylindrical base portion 30. The second roller 18-2 is press fitted and positioned between the second recess 24 and the fourth recess 30-5 aligned in the radial direction, and the third roller 18-3 is aligned in the radial direction. It is made to be located between the 3rd recessed part 22 and the 5th recessed part 30-4. The sixth and seventh recesses 30-6 and 30-7 are in the illustrated positions.

Hereinafter, the operation of the hinge when the door is opened to the left and right will be described.
First, when the door D is opened to the left, the cylindrical base 30 integrated with the hinge mounting plate 14 fixed to the door also causes a left-opening movement, and the drive member attached to the cylindrical base 30 The first driven member 46 fixed to the cylindrical casing 32 is rotated counterclockwise as shown in the figure. At this time, the second driven member 52 fixed to the spring shaft 34 is prevented from rotating counterclockwise by the first roller 18-1, and accordingly, between the cylindrical casing 32 and the spring shaft 34. Relative rotation occurs, so that the coil spring 36 is wound up. In the illustrated example, when the door D is opened to 70 degrees, the fourth recess 30-4 and the sixth recess 30-6 are fixed to the fixing instruction leg 12 until the first roller 18-1 and the third roller 3-1. Align with the roller 18-3 in the radial direction. Accordingly, when the door is opened at an angle larger than this, the first roller 18-1 and the third roller 18-3 are disengaged from the first and second recesses 20, 22 of the fixed support leg 12, and the fourth recess 30-4, Since it fits into the sixth recess 30-6, the first and second driven members 46, 52 are connected via the cylindrical base 30, and the cylindrical casing 32 and the spring shaft 34 are integrated in the rotational direction. Therefore, in this state, the restoring force of the coil spring 36 between the integrated cylindrical casing 32 and the spring shaft 34 does not act, and the door can be freely opened and stopped.

  When the door D is opened to the right, the spring shaft 34 is first rotated by the driving member 42 and rotated relative to the stationary cylindrical casing 32, contrary to the case of the left opening described above. The coil spring 36 is wound up and the restoring force is accumulated. Compared to an angle of 70 degrees or more, the first and second driven members 46 and 52 are connected to the third roller 18- 3. It is connected via the cylindrical base 30-1 and the second roller 18-2, and the cylindrical casing 32 and the spring shaft 34 are integrated, and the restoring force of the spring does not act on the door.

  As can be seen from the above, when the door D is opened to the left and right, the spring shaft 34 and the cylindrical casing 32 are relatively in the same direction (that is, clockwise with respect to the cylindrical casing 32 and the cylindrical casing). 32 is rotated counterclockwise with respect to the spring shaft 34, and the coil spring 36 is wound up. At this time, the damper cylinder 50 fixed to the spring shaft 34 is in the same direction with respect to the cylindrical casing 32. The piston 56 is raised in the damper cylinder 50. Further, when the door is rotated in the closing direction, the spring shaft 34 and the cylindrical casing 32 are relatively rotated in the opposite direction to that when the door is opened. As a result, the piston 56 is lowered in the cylindrical casing 32 to give a required resistance against the restoring force of the door.

It is a figure which shows the state by which the double door to which the hinge which concerns on this invention was attached was closed. It is a vertical side view of the hinge which concerns on this invention. It is an exploded view of the fixed support leg and coil spring mechanism of the hinge. FIG. 4 is a view taken along line IV-IV in FIG. 2, and a driving member that rotates together with the door when the door is opened to the right and left from the closed position, and is driven by the driving member when the door is left It is a figure which shows the drive relationship with the 1st driven member (fixed to a cylindrical casing) and the 2nd driven member (fixed to a spring shaft) at the time of right opening. FIG. 5 is a view taken along line VV in FIG. 2, when the door is opened to the left, the second driven member (fixed to the spring shaft) is fixed, and the first driven member (fixed to the cylindrical casing) is The first driven member (fixed to the cylindrical casing) is fixed when the door is opened to the right while the second driven member (fixed to the spring shaft) is allowed to rotate by the driving member. It is a figure which shows a motion of the fixing and rotation mechanism which accept | permits being rotated with a drive member.

Explanation of symbols

10 Door Hinge 12 Fixed Support Leg 12-1 Lower Part 12-2 Large Diameter Part 12-3 First Small Diameter Part 12-4 Second Small Diameter Part (Cylinder Part)
14 Thrust bearing 14 Hinge mounting plate 14 ′ Base end ring portion 16 Coil spring mechanism portion 18 Damper mechanism 18-1 First roller (first lock member)
18-2 Second roller (second locking member)
18-3 Third roller (third locking member)
20 1st recessed part 22 2nd recessed part 24 3rd recessed part 30 Cylindrical base 30-1 Large diameter part 30-2 1st small diameter part 30-3 2nd small diameter part 30-4 4th recessed part 30-5 5th recessed part 30- 6 6th recessed part 30-7 7th recessed part 32 Cylindrical casing (1st pivot member)
34 Spring shaft (second pivot member)
34-1 Upper end portion 34-2 Lower end 36 Coil spring (spring)
40 Bearing member 42 Drive member 46 First driven member 46-1 First through hole 48 Fixed member 50 Damper cylinder 50-1 Upper chamber 50-2 Lower chamber 52 Second driven member 52-1 Second through hole 54 Thrust Bearing 56 Piston 56-1 Separation member 56-2 Through hole (first fluid passage)
58 Piston rotation drive part 60 Flow path resistance adjusting member 61 Manual rotation adjusting member 64 Second fluid passage P Axis axis D Door L Door opening lower frame part T Top pivot S Seat

  The present invention relates to a hinge for double doors, and in particular, a closing (returning) action by a spring works until a predetermined opening angle. The present invention relates to a hinge for double doors that can be used.

A double door hinge with a built-in door, which is closed by the action of a coil spring even when the door opens in either the left or right direction and has a hydraulic braking function for the door to be closed back has been developed ( Patent Document 1).
JP 2004-239046 A

  In the double door hinge, the coil spring is wound up to close the door with the elastic (spring) force accumulated even when the door is opened in either the left or right direction. In the case of doors with hinges installed so far, when the door is opened, the spring force to return it is always applied, so the door is opened and stopped without the spring acting. I couldn't.

  In the present invention, the return closing action by the spring force works until a predetermined opening angle, but when the door is opened further, the spring force is not actuated so that the door can be freely opened. It aims at providing the hinge for double doors.

That is, the hinge for double doors according to the present invention,
A double door hinge (10) attached to a left and right double door and pivotally supporting the door about a vertical pivot (denoted by reference numeral P in the following description of the embodiment),
A fixed support leg (12) set perpendicularly to the door opening upper frame or lower frame along the pivot axis;
A first pivot member pivotably mounted about the pivot axis (implemented as a cylindrical casing 32 in the same embodiment);
A second pivot member (implemented as a spring shaft 34) pivotally mounted about the pivot axis;
A spring having one end fixed to the first pivot member and the other end fixed to the second pivot member (in this embodiment, implemented as a coil spring 36);
When the door is opened to one of the left and right double doors, the first pivot member is rotated around the pivot shaft, and when the door is opened to the other of the left and right double doors, the second pivot member is turned on the pivot shaft. Rotating means for rotating around (in the same embodiment, the cylindrical base 30 provided with the driving member 42, the first driven member 46 fixed to the cylindrical casing 32, and the second driven member fixed to the spring shaft 34) A drive member 52),
When the door is opened to the one of the left and right double doors, the second pivot member is connected to the fixed support leg and fixed around the pivot until the door rotates to a predetermined angle. When pivoting as described above, the second pivot member is released from the fixed support leg and coupled to the first pivot member, and the second pivot member is moved around the pivot axis. And can be rotated together with
When the door is opened to the other of the left and right double doors, the first pivot member is connected to the fixed support leg and fixed around the pivot until the door rotates to a predetermined angle. When pivoting as described above, the first pivot member is disconnected from the fixed support leg and connected to the second pivot member so that the first pivot member is moved around the pivot axis. And fixing / rotating means (first to third rollers 18-1, 18-2, 18-3, first to seventh recesses 20, 22, 24, 30-4, 30-5, which can be rotated together. 30-6, 30-7)
Have
The first pivot member and the second pivot member have first and second driven parts (46, 52) set at intervals in the circumferential direction of the pivot axis, respectively.
When the rotating means is fixed to the door and has a driving member (42) set between the first and second driven members, the driving member is opened to the one of the left and right double doors. Engaging the first driven part of the first pivot member, rotating the first pivot member around the pivot axis, and when the door is opened to the other of the left and right double openings, Engaging the second driven part of the second pivot member to rotate the second pivot member about the pivot;
The second pivot member is vertically aligned with the fixed support leg and is a spring shaft (34) extending along the pivot axis;
The first pivot member is a cylindrical casing (32) concentrically set around the spring shaft;
The spring is set to be spiral around the pivot, one end is fixed to the spring shaft, and the other end is a coil spring (36) fixed to the cylindrical casing.
The fixed support leg has a columnar part (second small diameter part 12-4) extending along the pivot,
The pivoting means is concentric around the cylindrical part, is pivotable and has a cylindrical base (30) connected to the door;
The second driven portion (52) is a portion extending from the spring shaft (34) in the cylindrical base portion in the axial direction,
The first driven portion (46) is a portion extending from the cylindrical casing (32) in the cylindrical base portion in the axial direction,
The driving member (42) is formed so as to protrude radially inward from the inner surface of the cylindrical base and be positioned between the first and second driven parts (46, 52),
The fixing / rotating means is
The cylindrical portion of the fixed support leg has a first recess (20) provided at a predetermined interval in the circumferential direction, and a second recess (22) provided at an interval in the left and right directions of the first recess. And a third recess (24),
The cylindrical base of the rotating means includes a fourth recess (30-4) and a fifth recess (30-5) that are radially aligned with the second recess and the third recess, respectively, when the door is closed, A sixth recess (30-6) and a seventh recess (30-7) that are spaced apart from the first recess in the circumferential direction than the fourth and fifth recesses, respectively,
The first driven member between the columnar portion of the fixed support leg and the cylindrical base portion of the rotating means is arranged in a radial direction between the third recess and the fifth recess when the door is closed. Having a first through hole (46-1) penetrating;
The second driven member located between the columnar portion of the fixed support leg and the cylindrical base portion of the rotating means is arranged in a radial direction between the second recess and the fourth recess when the door is closed. Having a second through hole (52-1) penetrating;
Further, the fixing / rotating means is
Provided between the columnar portion of the fixed support leg and the cylindrical base portion of the rotating means, and is located between the first and second driven members when the door is closed, and is fitted in the first recess. A first locking member (first roller 18-1) to be combined,
A second lock member (second roller 18-2) movable in the radial direction in the first through hole;
A third lock member (third roller 18-3) movable in the radial direction in the second through hole;
Have
When the door is rotated to the one side, the first lock member is fitted into the first recess of the fixed support leg so that the second pivoting member is engaged with the first lock member and does not rotate. And the second lock member is detached from the third recess of the fixed support leg and partially fits into the fifth recess of the cylindrical base to rotate the cylindrical base and the first pivoting member together. When the door is rotated by the predetermined angle, the fourth recess is aligned with the first lock member in the radial direction and the sixth recess is aligned with the third lock member in the radial direction. When rotating to one side, the first lock member is detached from the first recess and partially fitted into the fourth recess, and the third lock member is partially fitted into the sixth recess, The first and second pivot members are the second lock member, the cylindrical base, and the third rod It adapted to integrally rotated around the fixed support legs are connected via a click member,
When the door is rotated to the other side, the first lock member is fitted into the first recess of the fixed support leg so that the first pivoting member engages with the first lock member and does not rotate. In addition, the third lock member is detached from the second recess of the fixed support leg and is partially fitted into the fourth recess of the cylindrical base to rotate the cylindrical base and the second pivoting member together. When the door is rotated by the predetermined angle, the fifth recess is aligned with the first lock member in the radial direction, and the seventh recess is aligned with the second lock member in the radial direction. When rotating to the other side, the first lock member is disengaged from the first recess and partially fits in the fifth recess, and the second lock member is partially fit in the seventh recess, The first and second pivot members are the second lock member, the cylindrical member, and the third rod It can be made to rotate integrally linked to via the click member around the fixed supporting leg.

In particular,
The fixed support leg is fixed to the door opening lower frame part,
A spring shaft as the first pivot member extends in the axial direction at a position above the fixed support leg;
The cylindrical casing as the second pivot member extends in the axial direction at a position above the columnar portion of the fixed support leg,
The hinge for the double door is further
A damper cylinder fixed to the upper end of the spring shaft, extending upward on the inside of the cylindrical casing and defining a sealed damper chamber for storing the damper liquid therein;
A piston (56) that is hermetically slidably engaged with the inner wall surface of the damper chamber and separates the damper cylinder into an upper chamber (50-1) and a lower chamber (50-2);
A piston rotation drive unit (58) fixed to the upper end portion of the cylindrical casing (32), extending downward from the upper end of the damper chamber into the upper chamber, and connected to the piston;
When the door moves in the opening direction and the closing direction, and the cylindrical casing as the first pivoting member and the spring shaft as the second pivoting member relatively rotate, the piston rotation driving unit moves to the damper. Piston lifting means that causes the piston to move up and down in the damper chamber by rotating relative to the cylinder, respectively (screw engagement between the outer peripheral surface of the piston and the inner peripheral surface of the damper cylinder in the embodiment) And a first fluid passage (56-2) provided in the piston to allow fluid to flow from the lower chamber to the upper chamber when the piston descends in the damper chamber,
When the piston moves up in the damper chamber, fluid is allowed to flow from the upper chamber to the lower chamber, and when the piston moves down in the damper chamber, fluid is prevented from flowing from the lower chamber to the upper chamber. A second fluid passage (64) with a check valve;
A manual adjustment portion attached to an upper end of the double door hinge and the manual adjustment portion extends through the piston rotation drive portion to the first fluid passage, and the flow of the first fluid passage through the manual adjustment portion. And a flow path resistance adjusting member (60) including an adjusting portion for adjusting the path resistance.

In this case, the piston rotation drive unit is connected so as not to rotate relative to the piston and to move up and down relatively,
The piston is screw-engaged with the inner peripheral surface of the damper cylinder, and when the piston is rotationally driven by the piston rotation driving unit, the piston moves up and down in the cylinder by screw engagement with the inner peripheral surface of the cylinder. Can be.

Since the hinge according to the present invention is configured as described above, when the door is opened at a predetermined angle or more, the return closing force by the spring does not act, so that the door can be freely opened without the resistance of the spring. it can.
In addition, since the door double hinge according to the present invention is attached to the lower frame portion, when adjusting the flow path resistance of the damper chamber by the manual adjustment portion, compared with the hinge attached to the upper frame portion, The manual adjustment unit can be easily operated. In addition, since the damper chamber is provided at the upper part of the door return closing means, the structure of the hinge should be simple and compact as compared with the damper chamber provided at the lower part of the door return closing means. Can do. Furthermore, when the damper chamber is provided, the lower chamber is a high pressure chamber, so that troubles due to air intrusion into the high pressure chamber can be minimized.

Hereinafter, embodiments of a hinge for double doors according to the present invention will be described with reference to the drawings.
FIG. 1 is a view showing a state in which a double door D which is rotatable around a pivot line P extending vertically by a double door hinge 10 according to the present invention is in a closed position. That is, the door D is disposed along the pivot axis P at the lower position thereof, and is installed in the door D and supported by the door opening lower frame portion L (hereinafter, simply referred to as “hinge”). ) 10 and a top pivot T provided at the upper part of the door D and pivotally attached to the door opening upper frame part U.

  FIG. 2 is an enlarged vertical sectional view of the hinge 10 of FIG. As shown in the figure, the hinge 10 includes a fixed support leg 12 that is supported by a seat S (FIG. 1) embedded in the door opening lower frame portion L so as not to rotate around the pivot axis P, and the support. A hinge mounting plate 14 mounted on the leg 12 and mounted on the support leg 12 so as to be rotatable relative to the support leg 12 about the pivot line P and extending horizontally, and the door D is closed. A coil spring mechanism 16 for providing a return force for returning the door to the closed position when the door is opened to the left and right from a position, and a damper mechanism 18 for providing a fluid braking force when the door D is returned to the closed position after the door D is opened. Have.

  FIG. 3 shows the fixed support leg 12 and the coil spring mechanism 16 in an exploded manner. As shown in the drawing, the fixed support leg 12 includes a lower portion 12-1 inserted and fixed to the seat S, a large diameter portion 12-2, a first small diameter portion 12-3, A second small diameter portion 12-4 is provided.

  A thrust bearing 15 is set at a step between the large diameter portion 12-2 and the first small diameter portion 12-3, and a coil spring mechanism is provided so as to surround the first small diameter portion 12-3 on the thrust bearing 15. A portion 16 is placed and is rotatable about the pivot axis P with respect to the fixed support leg 12.

  The first, second and second rollers 12-1, second roller 18-2, and third roller 18-3, which will be described later with reference to FIG. Three recesses 20, 22, 24 are provided.

  The coil spring mechanism 16 is attached to the cylindrical base 30 concentrically on the cylindrical base 30 and the cylindrical base 30 that is rotatable about the pivot line P on the fixed support leg 12. A cylindrical casing 32 that is relatively rotatable around the pivot axis P, and is concentrically mounted in the cylindrical casing 32, and around the pivot axis P with respect to the cylindrical casing. And a coil spring 36 set around the spring shaft 34.

  The cylindrical base 30 has a large-diameter portion 30-1, a first small-diameter portion 30-2, and a second small-diameter portion 30-3 in order from the bottom, and on the outer periphery of the lower end of the large-diameter portion 30-1. A base end ring portion 14 'of the hinge mounting plate 14 is fixed, a bearing member 40 is provided on the outer periphery of the second small diameter portion 30-3, and a drive which will be described later with reference to FIG. The member 42 is fixed. In addition, fourth to seventh recesses 30-4, 30-5, 30-6, and 30-7 that receive rollers described later with reference to FIG. 5 are provided on the inner peripheral surface of the cylindrical base. .

  The lower end of the cylindrical casing 32 is placed on the step portion between the large diameter portion 30-1 and the first small diameter portion 30-2 of the cylindrical base 30, and extends to the upper end of the hinge 10. The cylindrical base 30 can be rotated around the pivot P. A first driven member 46, which will be described later with reference to FIGS. 4 and 5, is fixed to an inner peripheral surface near the lower end of the cylindrical casing 32 via a cylindrical fixing member 48. As can be seen from FIGS. 4 and 5, the first driven member 46 extends in an angle range of about 60 degrees around the pivot line P and extends in the pivot line P direction to increase the diameter of the cylindrical base 30. 30-1 is extended. A first through hole 46-1 is provided at the center of the first driven member 46 as seen in FIGS. 4 and 5, and the second roller 18-2 is accommodated so as to be displaceable in the radial direction. It is.

  The diameter of the upper end portion 34-1 of the spring shaft 34 is enlarged, and the spring shaft 34 is fixed to the lower end so as to close the lower end of the damper cylinder 50 constituting the damper mechanism 18. The upper end portion 34-1 is rotatably supported on a shaft support portion 60 fixed on the inner peripheral surface of the cylindrical casing 32 via a thrust bearing 54. The lower end 34-2 is substantially in contact with the upper end of the second small diameter portion 12-4 of the fixed support leg 12. A second driven member 52 extending in parallel with the pivot axis P is fixed to the lower end 34-2 of the spring shaft 34, and the second driving member 52 is fixed around the second small diameter portion 12-4 of the fixed support leg 12 as described above. Like the driven member 46, it extends in an angle range of about 60 degrees, and a second through-hole 52-1 for accommodating the third roller 18-3 so as to be displaceable in the radial direction is formed at the center thereof. . The coil spring 36 has a lower end fixed to the spring shaft 34 and an upper end fixed to the cylindrical casing 32.

  As shown in FIG. 2, the damper mechanism 18 has a general-purpose mechanism, is fixed to the upper end of the spring shaft 34, extends upward inside the cylindrical casing 32, and is sealed to store the damper liquid therein. The aforementioned damper cylinder 50 that defines the damper chamber, and a piston 56 that is hermetically slidably engaged with the inner wall surface of the damper cylinder 50 and separates the damper cylinder 50 into an upper chamber 50-1 and a lower chamber 50-2. And a piston rotation drive member 58 fixed to the upper end portion of the cylindrical casing 32 and extending downward from the upper end of the damper cylinder 50 into the upper chamber 50-1 and connected to the piston 56. The piston rotation drive member 58 is spline-coupled to the piston 56, and the piston 56 cannot rotate relative to the piston rotation drive member 58 but can move up and down. In the illustrated example, the piston 56 has a cylindrical shape, and is separated into an upper chamber 50-1 and a lower chamber 50-2 by a separation member 56-1 attached to an inner lower end thereof. The upper chamber 50-1 is vertically separated by a portion of the piston rotation drive member 58 splined to the piston 56, but is fluidly communicated via the spline coupling portion. The piston 56 is screw-engaged with the inner peripheral surface of the damper cylinder 50. When the piston 56 is rotationally driven by the piston rotation driving member 58, the piston 56 is not displaced in the vertical direction due to screw engagement with the inner peripheral surface of the damper cylinder 50. ) The cylinder 50 is moved up and down. Specifically, the piston rotation drive member 58 rotates relative to the damper cylinder 50 when the door D moves in the closing direction and the cylindrical casing 32 and the spring shaft 34 rotate relative to each other. As a result, the piston 56 rotates relative to the damper cylinder 50, thereby moving down in the damper chamber.

  The piston 56 is provided with a first fluid passage for allowing fluid to flow from the lower chamber 50-2 to the upper chamber 50-1 when the piston 56 descends in the damper chamber. In the example, it is provided in the center of the separating member 56-1 so as to extend along the pivot line P, and the through hole 56-2 forms this. A flow path resistance adjusting member 60 is passed through the through-hole, and the flow path resistance adjusting member 60 is moved in the vertical direction by rotating a manual rotation adjusting member 61 provided at the upper end of the hinge 10. By changing the position in the vertical direction, the flow passage resistance of the through hole, that is, the first fluid passage can be adjusted. The piston 56 allows fluid to flow from the upper chamber 50-1 to the lower chamber 50-2 when it rises in the damper chamber, and when it descends, from the lower chamber 50-2 to the upper chamber 50. A second fluid passage 64 with a check valve is provided to prevent fluid from flowing to -1.

  4, the driving member 42 fixed to the cylindrical base 30 is fixed to the first driven member 46 fixed to the cylindrical casing 32 and the spring shaft 34. The intermediate driven position of the second driven member 52 is set so as to contact both members. In the same state, as shown in FIG. 5, the first roller 18-1 is formed in the first recess 20 provided in the second small diameter portion 12-4 of the fixed support leg 12 by the inner peripheral surface of the cylindrical base portion 30. The second roller 18-2 is press fitted and positioned between the second recess 24 and the fourth recess 30-5 aligned in the radial direction, and the third roller 18-3 is aligned in the radial direction. It is made to be located between the 3rd recessed part 22 and the 5th recessed part 30-4. The sixth and seventh recesses 30-6 and 30-7 are in the illustrated positions.

Hereinafter, the operation of the hinge when the door is opened to the left and right will be described.
First, when the door D is opened to the left, the cylindrical base 30 integrated with the hinge mounting plate 14 fixed to the door also causes a left-opening movement, and the drive member attached to the cylindrical base 30 The first driven member 46 fixed to the cylindrical casing 32 is rotated counterclockwise as shown in the figure. At this time, the second driven member 52 fixed to the spring shaft 34 is prevented from rotating counterclockwise by the first roller 18-1, and accordingly, between the cylindrical casing 32 and the spring shaft 34. Relative rotation occurs, so that the coil spring 36 is wound up. In the illustrated example, when the door D is opened to 70 degrees, the fourth recess 30-4 and the sixth recess 30-6 are fixed to the fixing instruction leg 12 until the first roller 18-1 and the third roller 3-1. Align with the roller 18-3 in the radial direction. Accordingly, when the door is opened at an angle larger than this, the first roller 18-1 and the third roller 18-3 are disengaged from the first and second recesses 20, 22 of the fixed support leg 12, and the fourth recess 30-4, Since it fits into the sixth recess 30-6, the first and second driven members 46, 52 are connected via the cylindrical base 30, and the cylindrical casing 32 and the spring shaft 34 are integrated in the rotational direction. Therefore, in this state, the restoring force of the coil spring 36 between the integrated cylindrical casing 32 and the spring shaft 34 does not act, and the door can be freely opened and stopped.

  When the door D is opened to the right, the spring shaft 34 is first rotated by the driving member 42 and rotated relative to the stationary cylindrical casing 32, contrary to the case of the left opening described above. The coil spring 36 is wound up and the restoring force is accumulated. Compared to an angle of 70 degrees or more, the first and second driven members 46 and 52 are connected to the third roller 18- 3. It is connected via the cylindrical base 30-1 and the second roller 18-2, and the cylindrical casing 32 and the spring shaft 34 are integrated, and the restoring force of the spring does not act on the door.

  As can be seen from the above, when the door D is opened to the left and right, the spring shaft 34 and the cylindrical casing 32 are relatively in the same direction (that is, clockwise with respect to the cylindrical casing 32 and the cylindrical casing). 32 is rotated counterclockwise with respect to the spring shaft 34, and the coil spring 36 is wound up. At this time, the damper cylinder 50 fixed to the spring shaft 34 is in the same direction with respect to the cylindrical casing 32. The piston 56 is raised in the damper cylinder 50. Further, when the door is rotated in the closing direction, the spring shaft 34 and the cylindrical casing 32 are relatively rotated in the opposite direction to that when the door is opened, regardless of whether the door is rotated in the left or right direction. As a result, the piston 56 is lowered in the cylindrical casing 32 to give a required resistance against the restoring force of the door.

It is a figure which shows the state by which the double door to which the hinge which concerns on this invention was attached was closed. It is a vertical side view of the hinge which concerns on this invention. It is an exploded view of the fixed support leg and coil spring mechanism of the hinge. FIG. 4 is a view taken along line IV-IV in FIG. 2, and a driving member that rotates together with the door when the door is opened to the right and left from the closed position, and is driven by the driving member when the door is left It is a figure which shows the drive relationship with the 1st driven member (fixed to a cylindrical casing) and the 2nd driven member (fixed to a spring shaft) at the time of right opening. FIG. 5 is a view taken along line VV in FIG. 2, when the door is opened to the left, the second driven member (fixed to the spring shaft) is fixed, and the first driven member (fixed to the cylindrical casing) is The first driven member (fixed to the cylindrical casing) is fixed when the door is opened to the right while the second driven member (fixed to the spring shaft) is allowed to rotate by the driving member. It is a figure which shows a motion of the fixing and rotation mechanism which accept | permits being rotated with a drive member.

Explanation of symbols

10 Door Hinge 12 Fixed Support Leg 12-1 Lower Part 12-2 Large Diameter Part 12-3 First Small Diameter Part 12-4 Second Small Diameter Part (Cylinder Part)
14 Thrust bearing 14 Hinge mounting plate 14 ′ Base end ring portion 16 Coil spring mechanism portion 18 Damper mechanism 18-1 First roller (first lock member)
18-2 Second roller (second locking member)
18-3 Third roller (third locking member)
20 1st recessed part 22 2nd recessed part 24 3rd recessed part 30 Cylindrical base 30-1 Large diameter part 30-2 1st small diameter part 30-3 2nd small diameter part 30-4 4th recessed part 30-5 5th recessed part 30- 6 6th recessed part 30-7 7th recessed part 32 Cylindrical casing (1st pivot member)
34 Spring shaft (second pivot member)
34-1 Upper end portion 34-2 Lower end 36 Coil spring (spring)
40 Bearing member 42 Drive member 46 First driven member 46-1 First through hole 48 Fixed member 50 Damper cylinder 50-1 Upper chamber 50-2 Lower chamber 52 Second driven member 52-1 Second through hole 54 Thrust Bearing 56 Piston 56-1 Separation member 56-2 Through hole (first fluid passage)
58 Piston rotation drive part 60 Flow path resistance adjusting member 61 Manual rotation adjusting member 64 Second fluid passage P Axis axis D Door L Door opening lower frame part T Top pivot S Seat

The second small diameter portion 12-4 is fitted with first, third, and third rollers 18-1, a second roller 18-2, and a third roller 18-3, which will be described later with reference to FIG. Two recesses 20, 22, 24 are provided.

The diameter of the upper end portion 34-1 of the spring shaft 34 is enlarged, and the spring shaft 34 is fixed to the lower end so as to close the lower end of the damper cylinder 50 constituting the damper mechanism 18. The upper end portion 34-1 is rotatably supported on a shaft support portion fixed on the inner peripheral surface of the cylindrical casing 32 via a thrust bearing 54. The lower end 34-2 is substantially in contact with the upper end of the second small diameter portion 12-4 of the fixed support leg 12. A second driven member 52 extending in parallel with the pivot axis P is fixed to the lower end 34-2 of the spring shaft 34, and the second driving member 52 is fixed around the second small diameter portion 12-4 of the fixed support leg 12 as described above. Like the driven member 46, it extends in an angle range of about 60 degrees, and a second through-hole 52-1 for accommodating the third roller 18-3 so as to be displaceable in the radial direction is formed at the center thereof. . The coil spring 36 has a lower end fixed to the spring shaft 34 and an upper end fixed to the cylindrical casing 32.

4, the driving member 42 fixed to the cylindrical base 30 is fixed to the first driven member 46 fixed to the cylindrical casing 32 and the spring shaft 34. The intermediate driven position of the second driven member 52 is set so as to contact both members. In the same state, as shown in FIG. 5, the first roller 18-1 is formed in the first recess 20 provided in the second small diameter portion 12-4 of the fixed support leg 12 by the inner peripheral surface of the cylindrical base portion 30. The second roller 18-2 is press-fitted and positioned between the second recess 24 and the fifth recess 30-5 aligned in the radial direction, and the third roller 18-3 is aligned in the radial direction. It is made to be located between the 3rd recessed part 22 and the 4th recessed part 30-4. The sixth and seventh recesses 30-6 and 30-7 are in the illustrated positions.

Hereinafter, the operation of the hinge when the door is opened to the left and right will be described.
First, when the door D is opened to the left, the cylindrical base 30 integrated with the hinge mounting plate 14 fixed to the door also causes a left-opening movement, and the drive member attached to the cylindrical base 30 The first driven member 46 fixed to the cylindrical casing 32 is rotated counterclockwise as shown in the figure. At this time, the second driven member 52 fixed to the spring shaft 34 is prevented from rotating counterclockwise by the first roller 18-1, and accordingly, between the cylindrical casing 32 and the spring shaft 34. Relative rotation occurs, so that the coil spring 36 is wound up. In the illustrated example, when the door D is opened to 70 degrees, the fourth recess 30-4 and the sixth recess 30-6 are fixed to the fixed support leg 12 until the first roller 18-1 and the third roller 3-1. Align with the roller 18-3 in the radial direction. Accordingly, when the door is opened at an angle larger than this, the first roller 18-1 and the third roller 18-3 are disengaged from the first and second recesses 20, 22 of the fixed support leg 12, and the fourth recess 30-4, Since it fits into the sixth recess 30-6, the first and second driven members 46, 52 are connected via the cylindrical base 30, and the cylindrical casing 32 and the spring shaft 34 are integrated in the rotational direction. Therefore, in this state, the restoring force of the coil spring 36 between the integrated cylindrical casing 32 and the spring shaft 34 does not act, and the door can be freely opened and stopped.

When the door D is opened to the right, the spring shaft 34 is first rotated by the driving member 42 and rotated relative to the stationary cylindrical casing 32, contrary to the case of the left opening described above. The coil spring 36 is wound up and the restoring force is accumulated. Compared to an angle of 70 degrees or more, the first and second driven members 46 and 52 are connected to the third roller 18- 3. The cylindrical base 30 is connected via the second roller 18-2, and the cylindrical casing 32 and the spring shaft 34 are integrated, so that the restoring force of the spring does not act on the door.

10 Door Hinge 12 Fixed Support Leg 12-1 Lower Part 12-2 Large Diameter Part 12-3 First Small Diameter Part 12-4 Second Small Diameter Part (Cylinder Part)
14 Hinge mounting plate 14 'Base end ring
15 Thrust bearing 16 Coil spring mechanism 18 Damper mechanism 18-1 First roller (first lock member)
18-2 Second roller (second locking member)
18-3 Third roller (third locking member)
20 1st recessed part 22 3rd recessed part 24 2nd recessed part 30 Cylindrical base 30-1 Large diameter part 30-2 1st small diameter part 30-3 2nd small diameter part 30-4 4th recessed part 30-5 5th recessed part 30- 6 6th recessed part 30-7 7th recessed part 32 Cylindrical casing (1st pivot member)
34 Spring shaft (second pivot member)
34-1 Upper end portion 34-2 Lower end 36 Coil spring (spring)
40 Bearing member 42 Drive member 46 First driven member 46-1 First through hole 48 Fixed member 50 Damper cylinder 50-1 Upper chamber 50-2 Lower chamber 52 Second driven member 52-1 Second through hole 54 Thrust Bearing 56 Piston 56-1 Separation member 56-2 Through hole (first fluid passage)
58 Piston rotation drive part 60 Flow path resistance adjusting member 61 Manual rotation adjusting member 64 Second fluid passage P Axis axis D Door L Door opening lower frame part T Top pivot S Seat

Claims (6)

A hinge for double doors, which is attached to a left and right double door and supports the door pivotably about a vertical pivot axis,
A fixed support leg set vertically along the pivot axis to the door opening upper frame or lower frame;
A first pivot member pivotally mounted about the pivot axis;
A second pivot member pivotally mounted about the pivot axis;
A spring having one end fixed to the first pivot member and the other end fixed to the second pivot member;
When the door is opened to one of the left and right double doors, the first pivot member is rotated around the pivot shaft, and when the door is opened to the other of the left and right double doors, the second pivot member is turned on the pivot shaft. Rotating means for rotating around,
When the door is opened to the one of the left and right double doors, the second pivot member is connected to the fixed support leg and fixed around the pivot until the door rotates to a predetermined angle. When pivoting as described above, the second pivot member is released from the fixed support leg and coupled to the first pivot member, and the second pivot member is moved around the pivot axis. And can be rotated together with
When the door is opened to the other of the left and right double doors, the first pivot member is connected to the fixed support leg and fixed around the pivot until the door rotates to a predetermined angle. When pivoting as described above, the first pivot member is disconnected from the fixed support leg and connected to the second pivot member so that the first pivot member is moved around the pivot axis. And a fixing / rotating means that can be rotated together,
A hinge for a double door that is attached to a left and right double door. The first pivot member and the second pivot member have first and second driven parts that are set at intervals in the circumferential direction of the pivot axis, respectively.
The rotating means is fixed to a door and has a driving member set between the first and second driven parts, and the driving member is When the first pivot member is engaged with the first driven portion of the first pivot member, the first pivot member is rotated around the pivot axis, and the door is opened to the other of the left and right double doors, the second pivot The double door hinge according to claim 1, wherein the hinge is engaged with a second driven portion of the moving member to rotate the second pivoting member around the pivot. The second pivot member is vertically aligned with the fixed support leg and is a spring shaft extending along the pivot axis;
The first pivot member is a cylindrical casing set concentrically around the spring shaft;
The spring is set to be spiral around the pivot, one end is fixed to the spring shaft, and the other end is a coil spring fixed to the cylindrical casing,
The fixed support leg has a cylindrical portion extending along the pivot axis;
The pivoting means is concentric around the cylindrical portion, is pivotable and has a cylindrical base connected to the door;
The second driven portion is a portion that extends in the axial direction in the cylindrical base from the spring shaft,
The first driven portion is a portion that extends in the axial direction in the cylindrical base from the cylindrical casing;
3. The double door according to claim 2, wherein the driving member is formed so as to protrude radially inward from an inner surface of the cylindrical base portion and to be positioned between the first and second driven members. Hinge for. The fixing / rotating means is
A first concave portion provided in the cylindrical portion of the fixed support leg at a predetermined interval in the circumferential direction, and a second concave portion and a third concave portion located on both sides of the first concave portion,
The cylindrical base of the rotating means has a fourth recess and a fifth recess, which are aligned in the radial direction with the second recess and the third recess, respectively, in a state where the door is closed, and more than these fourth and fifth recesses, respectively. Having a sixth recess and a seventh recess separated from the first recess in the circumferential direction;
The first driven member located between the columnar portion of the fixed support leg and the cylindrical base of the rotating means is radially between the third recess and the fifth recess when the door is closed. Having a first through-hole penetrating;
The second driven member located between the columnar portion of the fixed support leg and the cylindrical base of the rotating means is arranged in a radial direction between the second recess and the fourth recess when the door is closed. Having a second through-hole penetrating;
Further, the fixing / rotating means is
It is provided between the cylindrical portion of the fixed support leg and the cylindrical base of the rotating means, and is located between the first and second driven members when the door is closed, and is fitted in the first recess. A first locking member to be combined;
A second locking member movable in the radial direction in the first through hole;
A third locking member movable in the radial direction in the second through hole;
Have
When the door is rotated to the one side, the first lock member is fitted into the first recess of the fixed support leg so that the second pivoting member is engaged with the first lock member and does not rotate. And the second lock member is detached from the third recess of the fixed support leg and partially fits into the fifth recess of the cylindrical base to rotate the cylindrical base and the first pivoting member together. When the door is rotated by the predetermined angle, the fourth recess is aligned with the first lock member in the radial direction and the sixth recess is aligned with the third lock member in the radial direction. When rotating to one side, the first lock member is detached from the first recess and partially fitted into the fourth recess, and the third lock member is partially fitted into the sixth recess, The first and second pivot members are the second lock member, the cylindrical base, and the third rod It adapted to integrally rotated around the fixed support legs are connected via a click member,
When the door is rotated to the other side, the first lock member is fitted into the first recess of the fixed support leg so that the first pivoting member engages with the first lock member and does not rotate. In addition, the third lock member is detached from the second recess of the fixed support leg and is partially fitted into the fourth recess of the cylindrical base to rotate the cylindrical base and the second pivoting member together. When the door is rotated by the predetermined angle, the fifth recess is aligned with the first lock member in the radial direction, and the seventh recess is aligned with the second lock member in the radial direction. When rotating to one side, the first lock member is detached from the first recess and partially fits in the fifth recess, and the second lock member is partially fit in the seventh recess, The first and second pivot members are the second lock member, the cylindrical base, and the third rod Double door hinge according to claim 3, characterized in that adapted to integrally rotated around the fixed support legs are connected via a click member. The fixed support leg is fixed to the door opening lower frame part,
A spring shaft as the first pivot member extends in the axial direction at a position above the fixed support leg;
The cylindrical casing as the second pivot member extends in the axial direction at a position above the columnar portion of the fixed support leg,
The hinge for the double door is further
A damper cylinder provided at the upper end of the spring shaft, extending upward on the inside of the cylindrical casing and defining a sealed damper chamber for storing the damper liquid therein;
A piston that is hermetically slidably engaged with the inner wall surface of the damper chamber and separates the damper chamber into an upper chamber and a lower chamber;
A piston rotation drive unit fixed to the upper end portion of the cylindrical casing and extending downward from the upper end of the damper chamber to the upper chamber and connected to the piston;
When the door moves in the opening direction and the closing direction, and the cylindrical casing as the first pivoting member and the spring shaft as the second pivoting member rotate relatively, the piston rotation driving unit moves to the cylinder Piston lifting and lowering means for causing the piston to move up and down in the damper chamber respectively by rotating relative to
A first fluid passage provided in the piston to allow fluid to flow from the lower chamber to the upper chamber when the piston descends in the damper chamber;
When the piston moves up in the damper chamber, fluid is allowed to flow from the upper chamber to the lower chamber, and when the piston moves down in the damper chamber, fluid is prevented from flowing from the lower chamber to the upper chamber. A second fluid passage with a check valve;
A manual adjustment portion attached to an upper end of the double door hinge and the manual adjustment portion extends through the piston rotation drive portion to the first fluid passage, and the flow of the first fluid passage through the manual adjustment portion. The double door hinge according to claim 3 or 4, further comprising a flow path resistance adjusting member including an adjusting portion for adjusting the road resistance. The piston rotation drive unit is connected so as not to rotate relative to the piston and to move up and down relatively,
The piston is screw-engaged with the inner circumferential surface of the cylinder, and when rotated by the piston rotation driving portion, the piston moves up and down in the cylinder by screw engagement with the inner circumferential surface of the cylinder. The hinge for double doors according to claim 5, wherein the hinge is for double doors.

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