JPH04228786A - Door hinge - Google Patents

Abstract

PURPOSE:To prevent the damage of an opening frame or the like which is caused by the collision of a door against the frame at the final point of the closing action of the door, and to keep the door in an opening state at an optional position. CONSTITUTION:A first external cylinder body 2 protrusively provided with fixed plates 21,31 and a second external cylinder body 3 are arrangedly provided in series, and a shaft member 4 is fixedly provided in a hollow section between them so as to be impossible in rotation to the second external cylinder body 3. A movable plate 16 being rotatable with the first external cylinder body 2 is loosely fitted on the shaft member 4, and a fixed plate 17 being opposite to the plate 16 through viscous liquid 7 is fixedly provided on the shaft member 4. A reversible one-way clutch 6 which is free-rotatable in one direction with the first external cylinder body 2 and locks to the shaft body 4 in the case of rotation in another direction is provided in the first external-cylinder body 2 to make locking force act in a closing direction in the case of opening a door and in an opening direction in the case of closing the door.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to door hinges used in buildings and the like.

0002

2. Description of the Related Art Entrance doors and interior doors that are generally used in houses, etc. are supported by an opening frame at one side edge base in the vertical direction by a hinge, and the other end is provided as a free end so as to be freely rotatable. ing. In addition, in such revolving doors, a hinge with a spring is used to bias the door in the closing direction so that the door closes automatically without the need to place a hand on the open door. be.

0003

[Problem to be Solved by the Invention] However, in such a case, the door closes vigorously due to the elastic force of the spring, and the door collides with the opening frame etc. at the final point of the closing rotation, producing a loud impact sound. Doors, etc. may be damaged due to the impact. Furthermore, even if a door is not equipped with a spring hinge, it may still be damaged if an external force is applied to force the door to close. On the other hand, in the above-mentioned conventional door hinge, in order to keep the door open in the final position when opening, locking members are provided on an immovable part such as the floor and an arbitrary part of the door, and are hooked and fixed. This method has been widely adopted, but it has problems such as requiring a large number of members. In addition, even if it is possible to keep the door open at the final position when opening, it is not possible to keep the door open at any position when opening or closing. Ta.

The present invention has been made to solve the above-mentioned problems, and it prevents the door from colliding forcefully with the opening frame etc. at the final point of the closing operation and causing damage etc., and also prevents the door from colliding with the opening frame etc. An object of the present invention is to provide a door hinge equipped with a reversible one-way clutch capable of holding the door in an open state.

[0005]

[Means for Solving the Problems] In order to achieve the above object, the door hinge of the present invention has a fixing plate protrudingly formed on its outer circumferential surface along the axial direction, and the hollow portions are communicated with each other so that the door hinge is relatively fixed. A first outer cylinder body and a second outer cylinder body which are rotatably arranged in series; The second outer cylindrical body includes a shaft fixedly arranged in a non-rotatable manner, a hole in the center of which the shaft can be loosely inserted, and at least a portion of the outer periphery. a plurality of substantially annular movable plates fixed to the inner wall of the first outer cylindrical body and rotatably arranged together with the first outer cylindrical body;
a plurality of substantially annular fixings formed to have a diameter smaller than or equal to the inner diameter of the outer cylindrical body, at least a portion of the inner circumferential edge being fixed to the outer circumferential surface of the shaft body, and arranged so as to alternately face the movable plate; a plate, a viscous liquid of an appropriate viscosity interposed between the movable plate and the fixed plate, and a viscous liquid having an appropriate viscosity, which is fixed within the first outer cylinder and is not directed in one direction together with the first outer cylinder. It is arranged so that it can be locked to the shaft body when rotating freely in the other direction, and the locked state is released when a rotational torque of a predetermined amount or more is applied in the locking direction. The clutch is characterized in that it has a reversible one-way clutch formed so that the same direction becomes free to rotate and the opposite direction becomes locked at the same time.

[0006]

[Function] The door hinge of the present invention works as a pair with a spring hinge equipped with an elastic member that biases the door in the closing direction, or with a normal hinge that does not have any special function. It is attached to the base and is used by supporting and fixing the door rotatably to the opening frame. First, when the door is opened, the first outer cylinder rotates accordingly. At this time, if you let go of your hand, etc. that was placed on the door at any position, the reversible one-way clutch will become locked, even if rotational force is applied in the closing direction by the spring hinge, etc., and the door will be locked at any position. be done.

[0007] Next, when closing an open door, first, a sufficient torque is applied to release the locked state of the reversible one-way clutch. Once the locked state is released, the first outer cylinder rotates in the closing direction due to the urging force of the spring hinge, etc., and accordingly, the movable plate engaged with the outer cylinder also rotates at the same time. Rotate. Therefore, even if a predetermined biasing force is applied in the closing direction by a spring hinge or the like, since the viscous liquid is interposed between the movable plate and the fixed plate, the liquid resistance will cause the movable plate to Braking force acts and the rotational force is reduced. As a result, the rotational speed of the first outer cylindrical body becomes slow, and the door closes quietly and slowly. After closing, the reversible one-way clutch applies a locking force in the opposite direction, that is, in the opening direction, so it will not easily open even if an unexpected external force such as wind or vibration is applied.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be explained in more detail below based on an embodiment shown in the drawings. In the figure, 1 indicates a door hinge according to this embodiment, and the door hinge 1 is a first
It is comprised of an outer cylinder body 2, a second outer cylinder body 3, a shaft body 4, a reversible one-way clutch 6, a viscous liquid 7, and the like.

The first outer cylindrical body 2 is a hollow cylindrical body with both ends open, and one end has a lid member 11 and a shaft holding member 5.
and is sealed with packings 9 and 10, and has an open structure at the other end. Further, a mounting plate 21 for fixing to the door is protruded along the longitudinal direction of the outer periphery, and a hole 21a for fixing to the door is provided in the mounting plate 21.

The second outer cylindrical body 3 is a hollow cylindrical body with both ends open, and one end is sealed with a lid member 13.
The other end is of an open structure. Further, similarly to the first outer cylinder 2, a mounting plate 31 is formed in a protruding manner, and the mounting plate 31 is provided with a hole 31a for fixing to an arbitrary immovable part such as an opening frame.

The first outer cylindrical body 2 and the second outer cylindrical body 3 have openings that are not sealed with the lid members 11 and 13, respectively, and a portion thereof is inside the second outer cylindrical body 3. They face each other via the flange portion 12a of the joining cylindrical member 12 that is fitted and fixed, and are arranged in close contact so as to be able to rotate and slide relative to each other.

The shaft 4 passes through the first outer cylinder 2 and the second outer cylinder 3 and is loaded into the hollow portion thereof, and is fixed at one end with a shaft holding member 5. Moreover, the shaft body 4 is
The cross-sectional shape of the portion 4a inserted into the first outer cylinder 2 is substantially circular, and the portion 4b inserted into the second outer cylinder 3 is formed into a polygonal shape such as a substantially square. therefore,
The shaft body 4 is rotated relative to the second outer cylinder body 3 by fitting the polygonal portion 4b into the joining cylinder member 12 and the lid member 13 inside the second outer cylinder body 3. It is fixedly placed so that it is impossible to do so.

[0013] Here, an engagement groove 2a is provided in the inner wall of the first outer cylindrical body 2 along its axial direction, and the engagement groove 2a has a groove as shown in FIG. A hole 16 that is larger than the outer diameter of the shaft 4 and into which the shaft 4 can be loosely inserted.
a is formed and a convex portion 16b protruding to the outer periphery.
A plurality of substantially annular movable plates 16 are disposed in a fitted manner. Further, an engagement groove 4c is formed along the axial direction on the outer peripheral surface of the circular portion 4a of the shaft body 4, and the engagement groove 4c has an outer diameter dimension as shown in FIG. The fixing plate 17 is formed to be smaller than the inner diameter of the first outer cylindrical body 2, has a hole 17a in the center thereof through which the shaft 4 is inserted, and has a protrusion 17b on the inner periphery. A plurality of them are arranged together.

The movable plates 16 and the fixed plates 17 are arranged so as to be able to slide alternately and in opposition to each other. A high viscosity liquid 7 such as silicone oil is interposed and hermetically filled with sealing packings 8 and 9. In addition, 1
5 is a spacer member.

The reversible one-way clutch 6 is fixedly disposed within the first outer cylindrical body 2 as described above, and specifically has the structure shown in FIGS. 5 to 13. Note that 14 is a spacer member for fixing the reversible one-way clutch 6 and the first outer cylinder body 2.

That is, this reversible one-way clutch 6 includes an outer cylindrical member 61 fixed to the spacer member 14 via a locking pin 69 disposed in a locking groove 61a, and an outer cylindrical member 61. a bearing support plate 62 fixedly attached therein, a needle bearing 63 held by the bearing support plate 62, connected to the bearing support plate 62 and functioning as a means for pressing the needle bearing 63;
A pressing pin 64 is constantly urged to press the needle bearing 63 inward by a pressing band 66 made of an elastic member.
and a press pin holding plate 6 for holding the press pin 64.
5.

The bearing support plate 62, as shown in the cross-sectional view in FIG. 6 and the exploded perspective view in FIG. In addition, when the shaft body 4 is inserted into predetermined locations on the inner periphery of the through hole 62a, three locations in this embodiment, the distance between the circumferential surface and the bottom wall portion 62f is shortest at approximately the center, i.e. Forming the shallowest portion 62c approximately at the center,
Concave groove 6 with recess grooves 62d and 62e on both sides
It is made of a thin plate material with 2b.

Specifically, as is clear from the operation diagrams of FIGS. 8 to 10 and FIG. A notch is formed so as to be parallel to a tangent to the circumferential surface of the shaft body 4. Therefore, since the shaft body 4 is formed in a cylindrical shape at approximately the center of the groove 62b, its peripheral surface and bottom wall portion 6
2f constitutes the shortest shallowest portion 62c within the groove 62b. In this case, as shown in FIG.
The concave groove 62b may be formed in a substantially elliptical shape, and the center portion of the groove bottom surface of the bottom wall portion 62f facing the shaft body 4 may protrude slightly toward the shaft body 4 side, so that a wedge angle P may be formed. With this configuration, the locking action of the shaft body 4 at the shallowest portion 62c can be ensured. As a result of forming the shallowest part 62c in this way, the groove 62b has two retraction grooves 62d and 62e on both sides of the shallowest part 62c, which are deeper than the shallowest part 62c. They will be installed together. Note that the depth of the shallowest portion 62c is formed to be slightly shorter than the diameter of the needle bearing 63. Further, the wall portion forming the groove 62b of the bearing support plate 62 has a substantially arc-shaped cutout portion 62h formed from the outer circumferential portion toward the groove 62b, so that the shallowest portion 62c
The bottom wall portion 62f forming the bottom wall portion 62f is formed to be the thinnest.

In this embodiment, as described above, since the grooves 62b are formed at three locations, three needle bearings 63 are provided correspondingly. Also,
A predetermined number of bearing support plates 62 are disposed within the outer cylinder member 61. In this embodiment, as shown in the drawings, six pins are stacked one on top of the other on both sides of the press pin holding plate 65.

As shown in FIGS. 8 to 10 and 13, the pressing pin holding plate 65 has the same structure as the bearing supporting plate 62.
An insertion hole 65a for inserting the shaft body 4 is formed approximately in the center thereof, and a groove 62a of the bearing support plate is formed at a suitable position on the inner circumference of the insertion hole 65a in this embodiment. Horn-shaped notches 65c are formed at three locations to be wider than the groove 62a and extend toward the outer circumference near both ends.
, 65d is formed.

The pressing pin holding plates 65 are arranged as a set of six sheets, for example, with each of the two notches 65c and 65d holding both ends of the pressing pin 64. The bearing support plates 62 are connected to each other. Therefore, the pressing pin 64 is attached to each pressing pin holding groove 65.
For b, two pairs are arranged. The pressing band 66 is disposed between the pair of pressing pin holding plates 65 so as to span all the pressing pins 64 . Note that 62g and 65e are locking grooves formed at appropriate positions on the outer periphery for locking and fixing the bearing support plate 62 and the pressing pin holding plate 65 to the outer cylinder member 61 by the locking pin 70, respectively. 67 is a holding plate, 68 is a retaining ring,
They are disposed near both ends of the outer cylindrical member 61 and fix the bearing support plate 62 and the like inside the outer cylindrical member 61.

Next, the operation of the door hinge 1 of this embodiment having such a structure will be explained. FIG. 14 shows an example in which the door hinge of this embodiment is applied to an entrance door, an interior door, etc. used in a house. That is, this door 1
8 has a rotating base supported by a stationary part 19 such as a door opening frame by a pair of hinges 1 and 1', and the other end is a free end so that it can be rotated to open and close. In addition, 18 in the figure
A is a knob provided near the free end of the door 18.

In this application example, among the above-mentioned set of door hinges, the hinge 1 installed on the upper side is
' is a spring hinge, and the hinge 1 attached to the lower side is configured as the door hinge of this embodiment. Therefore, in the door hinge 1 of this embodiment, the fixing plate 21 of the first outer cylinder body 2 is attached and fixed to the door, and the fixing plate 31 of the second outer cylinder body 3 is attached and fixed to an immovable part such as an opening frame. It will be arranged as follows.

Next, when opening the door 18, the first
The outer cylinder body 2 rotates together with the door 18. At this time, in the reversible one-way clutch 6, as shown in FIG. Since it is rotating, it is located in one of the retraction grooves 62e, and presses one of the pressing pins 64 against the pressing force in the direction of the outer circumference of the pressing pin holding plate 65. Therefore, the shaft body 4 is in an unlocked state, and the reversible one-way clutch 6 is
It rotates around the shaft body 4 together with the first outer cylinder body 2 . Note that the movable plate 16 is rotated by the second rotation of the first outer cylinder.
Since the holder rotates, resistance of the viscous liquid acts between the holder and the fixed plate 17. Therefore, in this embodiment, the opening speed of the door 18 is also relatively slow.

At this time, if the opening operation of the door 18 is stopped midway, a predetermined torque is applied in the closing direction by the spring hinge 1', and the first outer cylindrical body 2 attempts to rotate in the opposite direction. As a result, the needle bearing 63 is pressed by the pressing pin 64, and as shown in FIG. 9, the needle bearing 63 is moved in the X direction. Therefore, the needle bearing 63 reaches the substantially central part of the groove 62b, that is, the shallowest part 62c, and is locked to the shaft body 4, and the rotation of the first outer cylinder body 2 is stopped at this position, and the door 18 is stopped. It becomes open at any position.

On the other hand, when the door 18 is operated in the closing direction, that is, when the second outer cylinder body 2 is rotated in the direction b in FIG.
Apply enough torque to release the locked state of the needle bearing 63. As a result, the position of the needle bearing 63 is changed by elastically expanding the thin bottom wall portion 62f of the bearing support plate 62, as shown in FIG.
2c and is located in the other retraction groove 62d, and the locked state to the shaft body 4 is released. Thereafter, the door 18 is closed by the torque of the spring hinge 1' in the closing direction, but at this time, the closing speed is reduced due to the resistance of the viscous liquid interposed between the movable plate 16 and the fixed plate 17. It becomes slow.

In this case, in the reversible one-way clutch 6, the stopping force acts in the opening direction opposite to the above, so even if an unexpected external force such as wind or vibration is applied in the opening direction, the rotating body will not move. It won't open up easily. Therefore, in order to prevent the door 18 from opening due to an inadvertent external force when the door 18 is closed, an engaging portion (not shown) provided on a normal door, that is, a rotating operation of a knob. Accordingly, there is no need to provide an engaging portion that protrudes and retracts from the side end of the door and is capable of engaging with a recess provided in the opening frame.

Note that the door hinge 1 of the present invention is not limited to the above-described embodiment. For example, in the embodiment described above, the movable plate 16 and the fixed plate 17 provide resistance to the viscous liquid even when the door 18 is opened. By placing a normal one-way clutch in a predetermined position,
Of course, it is also possible to configure the door 18 so that the viscous resistance is applied only when the door 18 is closed. In addition, as the reversible one-way clutch 6, an example was shown in which a plurality of thin plate-shaped bearing support plates 62 and press pin holding plates 65 were stacked one on top of the other. Good too. Furthermore, although a combination of the pressing pin 64 and the pressing band 66 is shown as the pressing means, a configuration may also be adopted in which a spring is used to press the needle bearing.

[0029]

[Effects of the Invention] According to the door hinge of the present invention, a movable plate and a fixed plate are arranged at predetermined positions between the outer cylinder body and the shaft body, and a viscous liquid is interposed between the contact surfaces of the plates. Therefore, the closing operation of the door can be slowed down. Therefore, the door will not be damaged due to collision impact at the final time of the closing rotation. Furthermore, since a reversible one-way clutch is provided, it is possible to exert a stopping force that prevents rotation in the other direction against rotational force in either direction. Therefore, the door can be locked in an open state at any position, and even if an unexpected external force is applied due to wind or the like, it will not rotate in the other direction.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing one embodiment of a door hinge according to the present invention.

FIG. 2 is a perspective view showing a part of the shaft body.

FIG. 3 is a partially omitted sectional view showing the arrangement relationship among the movable plate, the first outer cylinder, and the shaft.

FIG. 4 is a partially omitted cross-sectional view showing the arrangement relationship among the fixing plate, the first outer cylinder, and the shaft.

FIG. 5 is a cross-sectional view showing the arrangement relationship between the reversible one-way clutch and the shaft body.

FIG. 6 is a sectional view taken along line CC in FIG. 5;

FIG. 7 is an exploded perspective view of the reversible one-way clutch.

FIG. 8 is an explanatory diagram of the operation of the reversible one-way clutch when the needle bearing is located in one of the retraction grooves of the concave groove.

FIG. 9 is an explanatory diagram of the operation of the reversible one-way clutch when the needle bearing is located at the shallowest part of the groove.

FIG. 10 is an explanatory diagram of the operation of the reversible one-way clutch when the needle bearing is located in the other retraction groove of the concave groove.

FIG. 11 is a plan view showing the main parts of the bearing support plate.

FIG. 12 is a plan view showing another aspect of the bearing support plate.

FIG. 13 is a plan view showing the main parts of the press pin holding plate.

FIG. 14 is a perspective view showing an application example of the door hinge of the same embodiment. 1 Door hinge 2 First outer cylinder 21 Fixed plate 3 Second outer cylinder 31 Fixed plate 4 Shaft 6 Reversible one-way clutch 61 Outer cylinder member 62 Bearing support plate 63 Needle bearing 64 Pressing pin 65 Pressing pin holding plate 66 Pressure band 7 Viscous liquid 16 Movable plate 17 Fixed plate

Claims (2)

[Claims] Claim 1: A first outer cylindrical body and a second outer cylindrical body, each of which has a fixed plate protrudingly formed on its outer circumferential surface along the axial direction, and which are arranged in series so as to be relatively rotatable with their hollow parts communicating with each other. an outer cylindrical body, the first outer cylindrical body and the second outer cylindrical body, and is loaded into the hollow portion thereof, and is fixedly arranged in a non-rotatable manner with respect to the second outer cylindrical body. a shaft body, a hole portion formed in the center portion into which the shaft body can be loosely inserted, and at least a part of the outer peripheral edge being fixed to the inner wall of the first outer cylinder body,
a plurality of substantially annular movable plates arranged to be rotatable together with the first outer cylindrical body, each having an outer diameter smaller than or equal to the inner diameter of the first outer cylindrical body; a plurality of substantially annular fixed plates fixed to the outer circumferential surface of the shaft body and arranged so as to face the movable plates alternately, and suitable plates interposed between the movable plates and the fixed plates A viscous liquid is fixed in the first outer cylinder, and is freely rotatable in one direction together with the first outer cylinder, and is locked to the shaft when rotating in the other direction. When a rotational torque of a predetermined value or higher is applied to the locked direction, the locked state is released and the same direction becomes free to rotate, while at the same time the opposite direction becomes locked. A reversible one-way clutch formed in
A door hinge comprising: 2. The reversible one-way clutch is formed at a predetermined location on the inner periphery of the through hole through which the shaft is inserted, the bottom wall is slightly elastic, and the shaft is inserted into the reversible one-way clutch. A bearing support plate that is loaded and fixed into an outer cylindrical member and has a recessed groove that is shallowest at approximately the center when the bearing is inserted through the outer cylinder member and has evacuation grooves connected to both sides of the recessed groove, and the recessed groove. The needle bearing is loosely inserted in parallel with the shaft body and is loaded so as to be able to come into contact with the shaft body, and a pressing means that constantly presses and biases the needle bearing toward the shallowest part of the groove. The door hinge according to claim 1, comprising: