WO2024116929A1

WO2024116929A1 - Door hinge device

Info

Publication number: WO2024116929A1
Application number: PCT/JP2023/041607
Authority: WO
Inventors: 秀清水; 拓真木村; 健太加藤
Original assignee: スガツネ工業株式会社
Priority date: 2022-11-28
Filing date: 2023-11-20
Publication date: 2024-06-06

Abstract

Provided is a door hinge device comprising a rotation supporting part which is fixed to a fixed surface, and a door holding part which has a rotary shaft extending in the vertical direction, is supported so as to be able to rotate with the rotary shaft between a door fully closed position and a door fully open position relative to the rotation supporting part, and which holds a glass door, wherein: the rotation supporting part has a supporting case through which the rotary shaft penetrates rotatably, and a rotating action mechanism which is accommodated in an accommodating part formed in the supporting case and controls the rotating action of the door holding part; the supporting case has a fixed-side end surface which is fixed to the fixed surface and a door-side end surface which is on the opposite side from the fixed-side end surface and faces inward in the planar direction of a door opening plane; the rotating action mechanism is provided with an action adjusting means for adjusting the rotating action; and the door-side end surface faces the glass door in the door fully closed position and is provided with an operating hole with which it is possible to operate the action adjusting means.

Description

Door hinge device

This disclosure relates to a door hinge device. This application claims priority to Japanese Patent Application No. 2022-189186, filed on November 28, 2022, the contents of which are incorporated herein by reference.

　Traditionally, for doors installed at entrances and exits of buildings, it is known to employ a hinge device that fixes the door to a fixed member so that the door can rotate around a vertical center of rotation, as shown in Patent Document 1, for example.

The hinge device includes a rotation support part fixed to a fixed member, and a door holder part having a rotation shaft extending vertically and supported rotatably together with the rotation shaft between a fully closed position and a fully open position on the rotation support part to hold the door. The rotation support part has a support case through which the rotation shaft is rotatably inserted, and a spring member accommodated in an accommodation part formed in the support case and applying a biasing force to the rotational movement of the door holder part.
According to the hinge device configured in this manner, an operating section for adjusting the spring adjustment section that adjusts the spring force of the spring member housed in the support case is provided on the back surface of the fixed member side of the rotating support section, and the spring adjustment section can be accessed from the back surface to perform operations for adjusting the spring force of the spring member.

Utility Model Registration No. 3168520

However, in the conventional hinge device as shown in Patent Document 1 mentioned above, a spring adjustment unit that adjusts the biasing force of the spring member housed in the support case is disposed on the back surface of the rotating support part on the fixed member side. Therefore, after attaching the hinge device holding the door to the fixed member, when changing the biasing force of the spring member to adjust the rotation speed of the door, it is necessary to remove the hinge device with the door from the fixed member again and access the spring adjustment unit from the operating part on the back surface of the rotating support part to perform the adjustment work. This causes problems in that the heavy door needs to be repeatedly attached and removed, and the rotating support part needs to be attached to the fixed member with high precision, which makes the work time-consuming.

In addition, if the operating part is provided on the side of the rotation support part, the adjustment of the spring member after the door is fixed as described above can be easily performed without removing the door or the rotation support part. However, the operating part becomes exposed, which reduces the design, and there is room for improvement in this regard.

This disclosure was made in consideration of the problems mentioned above, and aims to provide a door hinge device that can simultaneously reduce the effort required for adjustment work and improve design.

In order to achieve the above object, the door hinge device according to the first aspect of the present disclosure is a door hinge device that rotatably fixes a door to a fixed member around a vertical rotation center, and includes a rotation support part fixed to the fixed member, and a door holder part having a rotation shaft extending in the vertical direction and supported rotatably together with the rotation shaft between a fully closed position and a fully open position relative to the rotation support part to hold the door, the rotation support part includes a support case through which the rotation shaft is rotatably inserted, and a rotation operation mechanism that is accommodated in an accommodation part formed in the support case and controls the rotation operation of the door holder part, the support case includes a fixed side end face fixed to the fixed member, and a door side end face that faces the fixed side end face and faces inward in the planar direction of the door opening surface, the rotation operation mechanism is provided with an operation adjustment means that adjusts the rotation operation, and the door side end face is provided with an operation part that faces the door in the fully closed position and can operate the operation adjustment means.

In the door hinge device according to the present disclosure, when the door holder is rotated relative to the support case of the rotation support part, the operating part provided on the door side end face of the support case is exposed. The exposed operating part can then be used to operate the operation adjustment means to adjust the rotational operation of the rotational operation mechanism. That is, when the door is closed in the fully closed position, the door holder is positioned opposite the operating part provided on the door side end face. Therefore, at least when the door is in the fully closed position, the operating part is hidden by the door holder or the door and cannot be seen, and the operating part is not exposed on the side of the support case, which improves the design of the door hinge device.

Furthermore, according to the present disclosure, when adjusting the rotational movement of the door held by the door holding part using the operation adjustment means, the operation adjustment means can be accessed from the operating unit simply by opening the door and rotating the door holding part, eliminating the need for time-consuming work such as removing a heavy door or door holding part from a fixed member or attaching it with high precision, as has been required in the past, and improving work efficiency.
Furthermore, according to the present disclosure, since the operating unit is not exposed on the side of the support case, it is possible to prevent the operating unit from being easily operated or the operation adjustment means from being erroneously adjusted, and the set rotation speed of the door is less likely to be changed, providing stable operation.

Further, according to aspect 2 of the present disclosure, in the door hinge device of aspect 1, the operation unit is arranged such that the operation adjustment means cannot be operated through the operation unit when the door holding unit is located between the fully closed position and a position where the door is opened at a predetermined rotation angle. Moreover, it is preferable that the operation unit is arranged such that the operation adjustment means can be operated through the operation unit when the door holding unit is located at the fully open position.

In this case, the operation adjustment means can be operated from the operating unit only when the door is in the fully open position. In other words, the operating unit on the door side end face of the support case is entirely exposed only when the door is in the fully open position, and the operating unit is positioned in a manner that makes it difficult to see from the outside when the door is opening or closing (rotating), thereby improving the design.

Furthermore, according to aspect 3 of the present disclosure, in the door hinge device of aspect 2, it is preferable that the operating portion is at least partially covered by the door holding portion in the inoperable state.

In this case, when the operating part cannot be operated, at least a portion of the operating part is covered by the door holder and is difficult to see, which further improves the design.

Furthermore, according to aspect 4 of the present disclosure, in the door hinge device of aspect 3, it is preferable that the fully open door position is a rotation angle of ±90 degrees with respect to the fully closed door position.

In this case, when the door is in the fully open position, the door holder is not positioned to overlap the door end face of the support case, so that when operating the operation adjustment means, adjustment work can be performed only when the door is in the fully open position. In other words, there is no need to align the rotation angle of the door during work, which makes the work more efficient.

Furthermore, according to aspect 5 of the present disclosure, in the door hinge device of any one of aspects 1 to 4, it is preferable that the rotation operation mechanism is provided with an elastic member for biasing the door holding portion to move to the door fully closed position, and the operation adjustment means is a biasing force adjustment portion for adjusting the biasing force of the elastic member.

In this case, after the door hinge device is attached to the fixed member, the force of the elastic member can be adjusted by operating the force adjustment part with the operating part on the door side end face exposed.

Furthermore, according to aspect 6 of the present disclosure, in the door hinge device of aspect 5, it is preferable that the operating portion has an operating hole that communicates between the outside of the support case and the biasing force adjustment portion.

In this case, the biasing force adjustment section inside the support case can be accessed from outside the support case through the operation hole, and the biasing force of the elastic member can be easily adjusted. The biasing force can be adjusted using, for example, an operation tool. According to the present disclosure, since the operation section is configured only as a hole, it is difficult to recognize that it is an operation section even when the operation hole is exposed, and design can be improved.

Furthermore, according to aspect 7 of the present disclosure, in the door hinge device of aspect 6, the elastic member is a spring member, the rotating shaft is formed with a pressing portion that resists the bias of the spring member when the door rotates to open, the biasing force adjustment portion is attached to the fixed side end face by screwing, has a reaction force receiving surface that supports the base end portion of the spring member on the fixed member side, and includes a spring adjustment plate that is provided so that the reaction force receiving surface can be displaced in the direction of the elastic force of the spring member depending on the tightening position relative to the fixed side end face, the spring adjustment plate is provided with a biased force operating portion that faces the operation hole and can operate by tightening the spring adjustment plate, and the biased force operating portion is preferably connected to the outside of the support case via the operation hole.

In this case, the force-receiving operating portion of the spring adjustment plate inside the support case can be accessed from outside the support case through the operating hole, and the force of the spring member can be easily adjusted. The force can be adjusted using, for example, an operating tool. According to the present disclosure, since the operating portion is configured only as a hole, even when the operating hole is exposed, it is difficult to notice that there is an operating portion, improving the design.

Furthermore, according to aspect 8 of the present disclosure, in the door hinge device of aspect 5, the rotation operation mechanism has the elastic member and a damping member that applies a damping force to the door holding portion that moves to the fully closed door position, the operation adjustment means has the biasing force adjustment portion and a damping force adjustment portion that adjusts the damping force of the damping member, and it is preferable that the operating portion is provided corresponding to each of the biasing force adjustment portion and the damping force adjustment portion.

In this case, even if the door hinge device is equipped with both an elastic member and a damping member, the biasing force of the elastic member and the damping force of the damping member can be specifically adjusted by operating the operating parts provided corresponding to the biasing force adjustment part and the damping force adjustment part, respectively. Even in this case, since each operating part is provided on the door side end face of the support case, it is possible to achieve both the above-mentioned design improvement and reduction in labor.

Furthermore, according to aspect 9 of the present disclosure, in the door hinge device of aspect 8, it is preferable that the operating portion has a first operating hole that communicates between the outside of the support case and the biasing force adjustment portion, and a second operating hole that communicates between the outside of the support case and the damping force adjustment portion.

In this case, the biasing force adjustment section and the damping force adjustment section inside the support case can be accessed from outside the support case through the first operating hole and the second operating hole, respectively, making it possible to easily adjust the biasing force of the elastic member and the damping force of the damping member. An operating tool, for example, is used to adjust the biasing force and damping force. According to the present disclosure, since the operating section is configured only as a hole, it is difficult to recognize that the first operating hole and the second operating hole are operating sections even when they are exposed, which improves the design.

Furthermore, according to aspect 10 of the present disclosure, in the door hinge device of aspect 9, the damping member is a damper, and the damping force adjustment section is provided with a damped force operation section that faces the second operation hole and is capable of adjusting the damping force of the damper, and the damped force operation section is preferably in communication with the outside of the support case via the second operation hole.

In this case, the damped force operating portion of the damping force adjustment portion inside the support case can be accessed from outside the support case through the second operating hole, making it easy to adjust the damping force of the damping member. An operating tool, for example, is used to adjust the damping force. According to the present disclosure, since the operating portion is configured only as a hole, it is difficult to recognize that the second operating hole is an operating portion even when it is exposed, which improves the design.

The door hinge device disclosed herein can reduce the effort required for adjustment work while improving design.

FIG. 1 is a perspective view of a door hinge device according to an embodiment of the present disclosure; FIG. 2 is a perspective view of a door hinge device holding a glass door. 13 is a perspective view showing a state in which the biasing force of the elastic spring mechanism is being adjusted when the door is in a fully open position. FIG. FIG. 2 is an exploded perspective view of the door hinge device. FIG. 2 is a side view of the door hinge device in a fully closed position of the door. 4 is a plan view of the door hinge device seen from above in a fully closed position of the door. FIG. 7 is a cross-sectional view taken along line AA of FIG. 6, showing a longitudinal cross-sectional view of the door hinge device. 6 is a cross-sectional view taken along line BB of FIG. 5, and is a horizontal cross-sectional view of the door hinge device. 6 is a cross-sectional view taken along line CC of FIG. 5, and is a horizontal cross-sectional view of the door hinge device. FIG. 9 is a horizontal cross-sectional view of the door holder rotated in FIG. 8, showing the door in a half-open position. FIG. 9 is a horizontal cross-sectional view of the door holder rotated in FIG. 8, showing the door in a fully open position. FIG. 10 is a horizontal cross-sectional view of the door holder rotated in FIG. 9, showing the door in a half-open position. FIG. 10 is a horizontal cross-sectional view of FIG. 9 in which the door holder is rotated, showing the door in a fully open position.

The door hinge device according to an embodiment of the present disclosure will be described below with reference to the drawings.

As shown in Figures 1 to 4, the door hinge device 1 of this embodiment is a hinge device for fixing a glass door 10 (door), such as a glass door installed at the entrance of a building, to a fixed surface 11 of a fixed member such as a wall or a glass plate so that the door can rotate around a vertical rotation center O.

The door hinge device 1 according to this embodiment includes a rotation support part 2 fixed to a fixed surface 11, a rotation shaft 20 extending vertically, and a door holding part 3 supported rotatably together with the rotation shaft 20 between the fully closed door position P1 and the fully open door position P2 relative to the rotation support part 2, and which holds the glass door 10 by clamping it.

The rotation angle around the rotation center O when the door holding part 3 holding the glass door 10 is opened or closed is a position where the door fully open position P2 is ±90 degrees from the door fully closed position P1, assuming that the door fully closed position P1 is 0 degrees. In other words, the glass door 10 can rotate 90 degrees in each of the pushing and pulling directions from the door fully closed position P1.
Further, a rotational position (here, approximately 45 degrees) between the door fully closed position P1 and the door fully open position P2 as shown in Figures 10A and 11A is referred to as a door half-open position P3.

Here, the door hinge device 1 is fixed to the fixed surface 11 so that the center of rotation O of the glass door 10 relative to the rotation support part 2 is parallel to the vertical direction. In the door hinge device 1, the direction going around the center of rotation O is called the circumferential direction. In addition, in the rotation support part 2, the side of the fixed surface 11 in the direction X perpendicular to the fixed surface 11 is referred to as the back side X1, and the opposite side is referred to as the front side X2 in the following description.

As shown in FIG. 4, the rotation support part 2 has a support case 40 through which the rotation shaft 20 is rotatably inserted, a rotation operation mechanism (an elastic spring mechanism 50 and a damper mechanism 60, described below) that is housed in

housing parts

42 and 43 formed in the support case 40 and controls the rotation operation of the door holder 3, and a fixed base 70 that fixes the support case 40.

As shown in Figures 4 to 6, the support case 40 is arranged with the axial direction (center of rotation O) of the rotation shaft 20 oriented parallel to the vertical direction. The support case 40 has a fixed side end face 40a that is fixed to the fixed surface 11 via a fixed base 70, and a door side end face 40b that faces inward in the planar direction of the door opening surface on the opposite side to the fixed side end face 40a.

As shown in Figures 4 and 7, the support case 40 has a rotating shaft hole 41 through which the rotating shaft 20 is inserted, a first housing section 44 in which the elastic spring mechanism 50 is housed, and a second housing section 45 in which the damper mechanism 60 is housed.

The rotary shaft hole 41 passes through the support case 40 in the up-down direction and is located on the opposite side to the fixed end surface 40a. The rotary shaft hole 41 allows the rotary shaft 20 to be inserted therethrough so as to be freely rotatable.
The inner surface of the rotary shaft hole 41 has a first opening 41a communicating with the first housing portion 44, and a second opening 41b communicating with the second housing portion 45 below the first opening 41a. A tip portion 51a of a spring member 51 of an elastic spring mechanism 50 provided in the first housing portion 44 is provided in the first opening 41a so as to be movable forward and backward into the rotary shaft hole 41 via a spring guide 52 and a guide plate 521 described later. A damper tip portion 61a of a linear damper 61 of a damping damper mechanism 60 provided in the second housing portion 45 is provided in the second opening 41b so as to be protruding into the rotary shaft hole 41 via a damper case 62 and a damper plate 64.

The second storage section 45 is disposed below the first storage section 44. The first storage section 44 and the second storage section 45 are open at the fixed side end face 40a. The boundary between the first storage section 44 and the second storage section 45 may be separated by a partition member.

Furthermore, the door side end surface 40b of the support case 40 faces the back surface 31a of the vertical flange 31C of the door holding portion 3 in the door fully closed position P1, and is provided with a pair of operation holes 42, 43 (operation portion) that communicate between the outside of the support case 40 and the elastic spring mechanism 50 and the damping damper mechanism 60, which are operation adjustment means described below, and can operate the elastic spring mechanism 50 and the damping damper mechanism 60. The first operation hole 42 is located above the second operation hole 43.

As shown in Figures 4, 7 and 8, the first operating hole 42 is disposed coaxially with the spring axis C1 of the spring member 51 of the elastic spring mechanism 50, and is provided to adjust the biasing force of the elastic spring mechanism 50. Specifically, by inserting the operating member T (here, a hexagonal wrench) shown in Figure 3 into the first operating hole 42, it is possible to adjust the spring force (biasing force) of the spring member 51 by engaging it with the first operated portion 56 (here, the portion that engages with the hexagonal nut) of the spring adjustment plate 53 (described later) of the elastic spring mechanism 50 and rotating the spring adjustment plate 53 in the circumferential direction.

As shown in Figures 4, 7 and 9, the second operating hole 43 is disposed coaxially with the central axis C2 of the damping damper mechanism 60, and is provided for adjusting the damping force of the damping damper mechanism 60. Specifically, by inserting the operating member T (here, a hexagonal wrench) shown in Figure 3 into the second operating hole 43, it is possible to engage with the second operated portion 67 (here, the portion that engages with the hexagonal nut) of the damper adjustment plate 63 (described later) of the damping damper mechanism 60 and rotate the damper adjustment plate 63 in the circumferential direction, thereby adjusting the damping force of the linear damper 61.

As shown in Figures 8, 10A and 10B, the first operation hole 42 is provided so that the spring adjustment plate 53 cannot be operated through the first operation hole 42 when the door holding part 3 is positioned between the fully closed door position P1, passing through the half-open door position P3 and just before the fully open door position P2. The first operation hole 42 is also provided so that the spring adjustment plate 53 can be operated through the first operation hole 42 when the door holding part 3 is positioned at the fully open door position P2. At least a portion of the first operation hole 42 is covered by the door holding part 3 when in an inoperable state.

As shown in Figures 9, 11A and 11B, the second operation hole 43 is provided so that the damper adjustment plate 63 cannot be operated through the second operation hole 43 when the door holding part 3 is positioned between the fully closed door position P1, passing through the half-open door position P3 and just before the fully open door position P2. The first operation hole 42 is provided so that the damper adjustment plate 63 can be operated through the second operation hole when the door holding part 3 is positioned at the fully open door position P2. At least a portion of the second operation hole 43 is covered by the door holding part 3 when in an inoperable state.

As shown in FIG. 4, the rotating shaft 20 is rotatably housed in the rotating shaft hole 41 of the support case 40. Bearings 21 are provided between both axial ends of the rotating shaft 20 and the rotating shaft hole 41 so that the rotating shaft 20 can rotate smoothly between the inner surface of the rotating shaft hole 41.

Furthermore, support brackets 22 are provided on both shaft ends 20a, 20b of the rotating shaft 20, which clamp the respective shaft ends 20a, 20b so that they cannot rotate, and which are fixed to the first glass cover 31 of one of the door holding parts 3. The support brackets 22 are formed in an annular shape that is divided into two in the circumferential direction. The divided structure of the support brackets 22 clamps and holds the shaft ends 20a, 20b so that they cannot rotate, and the support brackets 22 are fixed to the first glass cover 31 by screws 23.

As shown in Figures 4, 8, 10A and 10B, the rotating shaft 20 is formed with a pressing surface 24 (pressing portion). The pressing surface 24 is a surface that resists the urging force of the spring member 51 (described later) of the elastic spring mechanism 50 when the glass door 10 rotates to open. The pressing surface 24 is a flat surface facing the tip portion 51a of the spring member 51 on the rotating shaft 20, and is formed by cutting out the rotating shaft 20. The pressing surface 24 forms a plane perpendicular to the direction of the elastic force of the spring member 51 (X direction) at the door fully closed position P1 shown in Figure 8. The pressing surface 24 is provided in a state where it is always in contact with and pressing against the spring member 51 in the rotation range from the door fully closed position P1 to the door fully open position P2.

Also, as shown in Figures 4, 9, 11A and 11B, a cam portion 25 is formed on the rotating shaft 20. When the glass door 10 rotates to close, a damping force is applied to the cam portion 25 from a linear damper 61 (described later) of the damper mechanism 60.

The cam portion 25 is formed to protrude toward the tip 61a of the linear damper 61 on the rotating shaft 20. When viewed from above with the door in the fully closed position P1 shown in FIG. 9, the cam portion 25 has a protruding shape whose width tapers from the door side toward the fixed side. At this time, the second protruding tip 25a of the cam portion 25 is positioned on the axis of the damper central axis C2 of the linear damper 61, and is in contact with the first protruding tip 65a of the protruding portion 65 on the damper plate 64 described below.

The cam portion 25 extends in the vertical direction. In the horizontal cross section, both side surfaces of the cam portion 25 from the base end to the second protruding tip 25a are curved inward to form a concave surface 25b. As shown in FIG. 11A, when the door holding portion 3 is in the half-open position P3, the protruding portion 65 of the damper plate 64 comes into contact with the concave surface 25b of the cam portion 25. In other words, when the door holding portion 3 returns to the fully closed position P1, the cam portion 25 presses the damper plate 64 to move it to the back side X1. The pressing force of the cam portion 25 on the damper plate 64 is adjusted by the damping force of the linear damper 61.

4 and 7, the fixed base 70 is plate-shaped and covers the fixed end surface 40a of the support case 40, and has an outer shape larger than the fixed end surface 40a. The fixed base 70 is fixed to the fixed surface 11 via a fixed seat 71. The fixed surface 11 is the surface of the above-mentioned fixed member that faces the center of the opening of the doorway that is opened and closed by the glass door 10. The fixed seat 71 is a reinforcing member that is thinner than the fixed base 70 and is made of, for example, stainless steel.
The fixed base 70 is attached to the fixed surface 11 with screws. The fixed base 70 has four corners each having a screw hole 72 through which a screw is inserted.

The fixed base 70 has an engaging female threaded portion 73 located in the first housing portion 44 and an engaging male threaded portion 74 located in the second housing portion 45. The engaging female threaded portion 73 engages with the spring adjustment plate 53 of the elastic spring mechanism 50, which will be described later. The engaging male threaded portion 74 engages with the damper adjustment plate 63 of the attenuation damper mechanism 60, which will be described later.

As shown in Figures 4, 7 and 8, the elastic spring mechanism 50, which is a rotation mechanism, applies an automatic return force to the glass door 10 held by the door holder 3 by elastic force. The elastic spring mechanism 50 has a spring member 51 (elastic member) that biases the door holder 3 to move to the door fully closed position P1. The spring member 51 has a small diameter spring 51A and a large diameter spring 51B that are doubled and coaxial. A spring guide 52 is provided at the tip end 51a of the spring member 51. A spring adjustment plate 53 (bias adjustment unit, operation adjustment means) that adjusts the biasing force (rotational operation) of the spring member 51 is provided at the base end 51b of the spring member 51.

The spring guide 52 is a cylindrical top that houses the tip 51a of the spring member 51, and the tip 51a of the spring member 51 abuts against the inner surface of the guide plate 521 at the top. The outer surface of the guide plate 521 is pressed against the pressing surface 24 of the rotating shaft 20 by the biasing force of the spring member 51 via the plate 54.

The spring adjusting plate 53 is formed in a disk shape, and a male screw 53a is formed on its outer circumferential surface. By rotating the spring adjusting plate 53 in the circumferential direction, the male screw 53a screws into the engaging female screw portion 73, and the spring adjusting plate 53 is attached to the fixed base 70. The engaging female screw portion 73 is provided on the fixed base 70 attached to the fixed side end surface 40a. The surface on the front side X2 of the spring adjusting plate 53 forms a reaction force receiving surface 53b that supports the base end portion 51b on the back side X1 of the spring member 51.
Furthermore, the spring adjusting plate 53 is provided so that the reaction force receiving surface 53b can be displaced in the direction of the elastic force of the spring member 51 (X direction) according to the fastening position relative to the engaging female thread portion 73. In this manner, according to the elastic spring mechanism 50, the biasing force of the spring member 51 is adjusted by displacing the spring adjusting plate 53 in the X direction.

A protrusion 55 is provided at the center of the reaction force receiving surface 53b of the spring adjustment plate 53, protruding toward the front side X2 and inserted into the inside of the spring member 51. A first operated part 56 (force-operated part) is provided on the tip surface of the protrusion 55, facing the first operating hole 42 in the X direction and capable of being tightened by rotating the spring adjustment plate 53 in the circumferential direction. The first operated part 56 is located coaxially with the first operating hole 42, and is a hexagonal hole into which a hexagonal wrench, which is the operating member T, can be inserted. The first operated part 56 is in communication with the outside of the support case 40 via the first operating hole 42.

As shown in Figures 4, 7 and 9, the attenuation damper mechanism 60, which is a rotational operation mechanism, has a linear damper 61 (damping member) that applies a damping force to the door holding part 3 that moves to the door fully closed position P1.
According to this embodiment, the linear damper 61 is an assembly of four oil dampers. A damper case 62 is provided at a tip end 61a of the linear damper 61. A damper adjustment plate 63 (damping force adjustment portion, operation adjustment means) that adjusts the damping force (rotational operation) of the linear damper 61 is provided at a base end 61b of the linear damper 61.

The damper case 62 is a cylindrical case with a top that houses the tip 61a of the linear damper 61, and the tip 61a of the linear damper 61 abuts against the inner surface of the top plate 621. A damper plate 64 is provided on the outer surface of the top plate 621 on the door side.

The damper plate 64 is configured to apply the damping force of the linear damper 61 to the cam portion 25 of the rotating shaft 20 according to the rotation angle of the door holder 3. The damper plate 64 has a protruding portion 65 that tapers from the fixed side toward the door side when viewed from above. The protruding portion 65 extends in the vertical direction. As shown in FIG. 9, the first protruding tip 65a of the protruding portion 65 is disposed on the axis of the damper central axis C2 when viewed from above, and is in contact with the second protruding tip 25a of the cam portion 25 of the rotating shaft 20 that is positioned at the door fully closed position P1. The protruding portion 65 is engaged with the cam portion 25 in a portion of the rotation range from the door fully closed position P1 to the door fully open position P2.

The damper adjustment plate 63 is formed in a disk shape and is attached to the fixed base 70 by screwing into the engaging male thread portion 74 of the fixed base 70 attached to the fixed side end face 40a. The front surface 63a of the damper adjustment plate 63 supports the base end portions 61b of each of the four oil dampers of the linear damper 61. The stroke of the damper can be adjusted by rotating the damper adjustment plate 63 in the circumferential direction, thereby adjusting the damping force of the linear damper 61.

As shown in FIG. 7, a protrusion 66 that protrudes toward the front side X2 is provided at the center of the front surface 63a of the damper adjustment plate 63. A second operated part 67 (damping force operating part) that faces the second operating hole 43 in the X direction and can rotate the damper adjustment plate 63 in the circumferential direction is provided at the tip surface of the protrusion 66. The second operated part 67 is located coaxially with the second operating hole 43 and is a hexagonal hole into which a hexagonal wrench (not shown), which is an operating member, can be inserted. The second operated part 67 is in communication with the outside of the support case 40 via the second operating hole 43.

As shown in Figures 1 to 4, the door holder 3 is integrally connected to the rotating shaft 20 with the edge of the glass door 10 sandwiched between a pair of first glass cover 31 and second glass cover 32 via spacer 33 and packing 34. The first glass cover 31 and second glass cover 32 are arranged so that their surfaces are parallel to each other when sandwiching the glass door 10.

The first glass cover 31 is formed in a substantially U-shape by an upper flange 31A, a lower flange 31B, and a vertical flange 31C that connects one end of the upper flange 31A and the lower flange 31B. The second glass cover 32 is formed in a substantially U-shape by an upper flange 32A, a lower flange 32B, and a vertical flange 32C that connects one end of the upper flange 32A and the lower flange 32B. A support bracket 22 fixed to the shaft end 20a of the rotating shaft 20 is fixed to the end of the upper flange 31A of the first glass cover 31 by a screw 23. A support bracket 22 fixed to the shaft end 20b of the rotating shaft 20 is fixed to the end of the lower flange 31B of the first glass cover 31 by a screw 23. A support case 40 that houses the rotating shaft 20 is arranged in the recess 3a of the door holder 3. That is, the door holder 3 can rotate in the circumferential direction around the rotating shaft 20 (rotation center O) and rotates around the support case 40.

With the door hinge device 1 configured in this way, when the glass door 10 is closed, the rotational force returning the door to the fully closed position P1 is damped by the linear damper 61 and slowed down as the cam portion 25 of the rotating shaft 20 comes into contact with the protrusion 65 of the damper mechanism 60 and presses it against the rear side X1. The biasing force of the spring member 51 of the elastic spring mechanism 50 is used to generate the rotational force returning the door to the fully closed position P1.

Next, the operation of the door hinge device 1 described above will be described in detail with reference to the drawings. In the door hinge device 1 according to this embodiment, the support case 40 has a fixed end surface 40a fixed to the fixed surface 11, and a door end surface 40b opposite the fixed end surface 40a and facing inward in the planar direction of the door opening surface. The rotational movement mechanism (elastic spring mechanism 50, attenuation damper mechanism 60) is provided with movement adjustment means (spring adjustment plate 53 and damper adjustment plate 63) for adjusting the rotational movement. The door end surface 40b is provided with operation holes 42, 43. The operation holes 42, 43 face the glass door 10 in the fully closed position P1, and the movement adjustment means (spring adjustment plate 53 and damper adjustment plate 63) can be operated through the operation holes 42, 43.

In the door hinge device 1 according to the present embodiment, when the door holder 3 is rotated relative to the support case 40 of the rotation support part 2, the operation holes 42, 43 provided on the door side end surface 40b of the support case 40 are exposed. The exposed operation holes 42, 43 can be used to operate the spring adjustment plate 53 and the damper adjustment plate 63 to adjust the linear motion (biasing force, damping force) of the elastic spring mechanism 50 and the damper mechanism 60. That is, when the glass door 10 is closed at the fully closed position P1, the door holder 3 is positioned in a position facing the operation holes 42, 43 provided on the door side end surface 40b. Therefore, at least at the fully closed position P1, the operation holes 42, 43 are hidden by the door holder 3 or the glass door 10 and cannot be seen, and the operation holes 42, 43 are not exposed on the side surface 40c of the support case 40. As a result, the design of the door hinge device 1 can be improved.

Furthermore, according to this embodiment, when adjusting the rotational movement of the glass door 10 held by the door holding part 3 using the movement adjustment means (spring adjustment plate 53 and damper adjustment plate 63), the spring adjustment plate 53 and damper adjustment plate 63 can be accessed from the operation holes 42, 43 simply by opening the glass door 10 and rotating the door holding part 3. This eliminates the need for time-consuming work such as removing the heavy glass door 10 and door holding part 3 from the fixing member and attaching the glass door 10 and door holding part 3 to the fixing member with high precision, as was previously required, and improves the efficiency of the adjustment work.

Furthermore, according to this embodiment, the operation holes 42, 43 are not exposed on the side surface 40c of the support case 40, so it is possible to prevent the operation holes 42, 43 from being easily operated, and to prevent the spring adjustment plate 53 and the damper adjustment plate 63 from being erroneously adjusted. As a result, the set rotation speed of the door is less likely to be changed, providing stable operation.

According to this embodiment, the operation holes 42, 43 are provided so that the spring adjustment plate 53 and the damper adjustment plate 63 cannot be operated through the operation holes 42, 43 when the door holding part 3 is located between the fully closed position P1 and just before the fully open position P2. The operation holes 42, 43 are provided so that the spring adjustment plate 53 and the damper adjustment plate 63 can be operated through the operation holes 42, 43 when the door holding part 3 is located at the fully open position P2.
Therefore, only at the door fully open position P2, the spring adjustment plate 53 and the damper adjustment plate 63 can be operated through the operation holes 42, 43. In other words, only at the door fully open position P2, the operation holes 42, 43 in the door side end surface 40b of the support case 40 are entirely exposed, so that the operation holes 42, 43 are arranged in a manner that makes them difficult to see from the outside when the glass door 10 is opened or closed (rotated), thereby improving the design.

Furthermore, according to this embodiment, when the spring adjustment plate 53 and the damper adjustment plate 63 are in an inoperable state, at least a portion of the operation holes 42 , 43 is covered by the door holding portion 3 .
With this configuration, when the operation holes 42, 43 cannot be operated, at least a part of the operation holes 42, 43 is covered by the door holding part 3 and becomes difficult to see, thereby improving the design.

Further, according to this embodiment, the fully open door position P2 is at a rotation angle of ±90 degrees with respect to the fully closed door position P1.
In this case, since the door holder 3 is not overlapped with the door side end surface 40b of the support case 40 at the door fully open position P2, the adjustment work can be performed only when the spring adjustment plate 53 and the damper adjustment plate 63 are operated at the door fully open position P2. In other words, there is no need to align the rotation angle of the glass door 10 during the work, and the work can be made more efficient.

In addition, according to this embodiment, there are operating

holes

42, 43 that connect the outside of the support case 40 with the spring adjustment plate 53, so that the spring adjustment plate 53 inside the support case 40 can be accessed from the outside of the support case 40 using, for example, an operating member T through these operating

holes

42, 43, and the spring force of the spring member 51 can be easily adjusted.
According to this embodiment, since the operation portions are configured only as holes, even when the operation holes 42, 43 are exposed, it is difficult to recognize that they are operation portions, and design can be improved.

Furthermore, according to this embodiment, even in a door hinge device 1 equipped with both a spring member 51 and a linear damper 61, the spring force of the spring member 51 and the damping force of the linear damper 61 can be specifically adjusted by operating the operating holes 42, 43 provided corresponding to the spring adjustment plate 53 and the damper adjustment plate 63, respectively.
Even in this case, since the operation holes 42, 43 are provided on the door side end surface 40b of the support case 40, it is possible to achieve both the above-mentioned improvement in design and reduction in the labor required for operation.

As described above, the door hinge device 1 according to this embodiment can reduce the effort required for adjustment work while improving the design.

The above describes an embodiment of the door hinge device according to the present disclosure, but the present disclosure is not limited to the above embodiment and can be modified as appropriate without departing from the spirit of the disclosure.

For example, according to the above-described embodiment, a first storage section 44 and a second storage section 45 are provided within the support case 40, and two rotational operating mechanisms, an elastic spring mechanism 50 and a damper mechanism 60, are provided, and the biasing force and damping force can be adjusted by operating each operation adjustment means (spring adjustment plate 53, damper adjustment plate 63) through the first operating hole 42 and the second operating hole 43, respectively. However, the present invention is not limited to having both the rotational operating mechanisms, the elastic spring mechanism 50 and the damper mechanism 60.
For example, a configuration may be provided in which only the elastic spring mechanism 50 is provided, or a configuration may be provided in which only the attenuation damper mechanism is provided. Furthermore, in a configuration in which two rotational operation mechanisms, the elastic spring mechanism 50 and the attenuation damper mechanism 60, are provided, it is also possible to provide only the first operation hole 42 corresponding to the elastic spring mechanism 50, and to configure so that only the biasing force of the elastic spring mechanism 50 can be adjusted from the door side end surface 40b side.

In addition, according to this embodiment, the first operating hole 42 and the second operating hole 43 are used as the operating part provided on the door side end surface 40b of the support case 40, and are holes into which the operating member T can be inserted, but this is not limited to this and an operating part with a different configuration may be used. For example, the first operated part 56 of the spring adjustment plate 53 may be provided so as to be exposed on the door side end surface 40b, and it is also possible to use an operating means (operating part) that does not use an operating member T such as a hexagonal wrench.

Furthermore, the fully open door position P2 is not limited to a rotation angle of ±90 degrees relative to the fully closed door position P1 as in this embodiment, but may be, for example, ±120 degrees or approximately ±180 degrees.

Furthermore, the specific shapes, dimensions, quantity and other configurations of the elastic spring mechanism 50 and the damper mechanism 60, as well as the settings of the initial biasing force and damping force, can be changed as appropriate to suit conditions such as the size and weight of the door being used and the number of door hinge devices.

In addition, in this embodiment, a glass door 10 is used as the door, but the door may be made of materials other than glass, such as wood, resin, steel, or composite materials.

Furthermore, the fixing member to which the door hinge device is fixed is not limited to a wall surface of the building frame or the like, and is not particularly limited as long as it is a part to which the door is fixed. For example, the fixing member may be a wall or glass of a housing such as a shower booth.
Furthermore, the position or orientation of the fixing surface of the fixing member to which the door hinge device is fixed is not limited in any way, and is not limited to the fixing surface 11 facing the end face side of the glass door 10 in the door fully closed position P1 as in this embodiment.

In addition, the components in the above-described embodiments may be replaced with well-known components as appropriate, without departing from the spirit of this disclosure.

It can be applied to door hinge devices that can simultaneously reduce the effort required for adjustment work and improve design.

1 Door hinge device 2 Rotation support part 3 Door holding part 10 Glass door (door)
11: fixed surface; 20: rotating shaft; 24: pressing surface (pressing portion);
25 Cam portion 40 Support case 40a Fixed side end surface 40b Door side end surface 42 First operation hole (operation portion)
43 Second operation hole (operation part)
44 First storage section 45 Second storage section 50 Elastic spring mechanism (rotation mechanism)
51 Spring member (elastic member)
53 Spring adjustment plate (operation adjustment means, biasing force adjustment section)
53b Reaction force receiving surface 56 First operated part 60 Attenuation damper mechanism (rotation operation mechanism)
61 Linear damper (damping member)
63 Damper adjustment plate (operation adjustment means, damping force adjustment section)
67 Second operated part 70 Fixed base P1 Door fully closed position P2 Door fully open position

Claims

A door hinge device that fixes a door to a fixing member so as to be rotatable around a rotation center in a vertical direction,
A rotation support portion fixed to the fixed member;
a door holding part having a rotation shaft extending in a vertical direction and supported rotatably together with the rotation shaft between a door fully closed position and a door fully open position with respect to the rotation support part, and holding the door;
The rotation support portion is
a support case into which the rotating shaft is rotatably inserted;
a rotation mechanism that is accommodated in a housing formed in the support case and controls a rotation operation of the door holder;
The support case has a fixed end surface fixed to the fixing member and a door side end surface facing inward in a planar direction of the door opening surface on the opposite side to the fixed end surface,
The rotation mechanism is provided with an adjustment means for adjusting the rotation.
The door hinge device further includes an operating portion provided on the door side end surface, the operating portion facing the door when the door is in the fully closed position and operable to operate the operation adjustment means.
The door hinge device according to claim 1, wherein the operation unit is provided such that the operation adjustment means is inoperable when the door holding unit is in a position between the fully closed position and a position where the door is opened at a predetermined rotation angle, and the operation adjustment means is operable when the door is in the fully open position.
The door hinge device according to claim 2, wherein at least a portion of the operating part is covered by the door holding part in the inoperable state.
The door hinge device according to claim 3, wherein the fully open door position is a rotation angle of ±90 degrees relative to the fully closed door position.
The rotation mechanism is an elastic member that biases the door holder to move to the door fully closed position,
The door hinge device according to claim 1 , wherein the operation adjusting means is a biasing force adjusting portion that adjusts the biasing force of the elastic member.
The door hinge device according to claim 5, wherein the operating section has an operating hole that connects the outside of the support case to the biasing force adjustment section.
the elastic member is a spring member,
The rotating shaft is formed with a pressing portion that resists the bias of the spring member when the door rotates to open the door,
the biasing force adjustment portion includes a spring adjustment plate that is attached to the fixed end surface by screwing and has a reaction force receiving surface that supports a base end portion of the spring member on the fixed member side, and is provided so that the reaction force receiving surface can be displaced in a direction of the elastic force of the spring member according to a fastening position relative to the fixed end surface,
The spring adjustment plate is provided with a biased force operating portion that faces the operation hole and can be operated to tighten the spring adjustment plate,
The door hinge device according to claim 6 , wherein the force-receiving operation portion communicates with an outside of the support case through the operation hole.
The rotation mechanism includes the elastic member and a damping member that applies a damping force to the door holding portion that moves to the door fully closed position,
The operation adjustment means includes the biasing force adjustment unit and a damping force adjustment unit that adjusts the damping force of the damping member,
The door hinge device according to claim 5 , wherein the operation portion is provided corresponding to each of the biasing force adjustment portion and the damping force adjustment portion.
The door hinge device according to claim 8, wherein the operating section has a first operating hole that connects the outside of the support case to the biasing force adjustment section, and a second operating hole that connects the outside of the support case to the damping force adjustment section.
the damping member is a damper,
The damping force adjustment portion is provided with a damped force operation portion that faces the second operation hole and is capable of adjusting the damping force of the damper,
The door hinge device according to claim 9 , wherein the damped force operating portion communicates with an outside of the support case through the second operating hole.