JP3475307B2 - Automatic reset type hinge - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic return type hinge in which a door or the like is automatically closed by a damper function, that is, an automatic hinge.

[0002]

2. Description of the Related Art At present, a door closer is often used in order to automatically close an opened door (door). The door closer is attached to an upper corner of the door in addition to the door hinge. . Therefore, it is very unfavorable from the aesthetic sense of the door as a whole, and the door closer is large and has a messy feeling, and it is unsuitable as an interior, and the price is expensive. It has the drawback that it is

Under such circumstances, an auto hinge is considered as an alternative to the door closer.

The auto hinge is a pair of hinges consisting of a damper hinge having a rotary damper built in the hinge shaft and a spring hinge having a coil spring built in the hinge shaft. For example,
The spring hinge is installed on the upper side of the door, the damper hinge is installed on the lower side of the door, and the coil spring of the spring hinge is twisted when the door is opened, and the return force is used to automatically close the door. When the door is closed, the door is slowly closed by the damper action of the damper hinge.

If this automatic hinge is used for a door, the above-mentioned door closer is not necessary at all, and it becomes a very good interior for the door.

[0006]

However, the auto hinge has two dampers, a damper hinge having a damper function and a spring hinge having a returning function, which are separately manufactured and used as a pair of hinges. In addition to the inconvenience that it has to be manufactured, the two hinges have to be manufactured, so that the manufacturing cost is increased and the assembling work is also troublesome.

The present invention has been made in view of the above-mentioned problems, and by providing one hinge with a damper function and a return function, the manufacturing cost can be reduced, and the limited usage can be released to assemble. It is an object of the present invention to provide an automatic return type hinge which is easy to work.

[0008]

In order to solve the above problems, the present invention relates to an inner wing (12) having a cylindrical portion (16) serving as a shaft portion having an insertion hole (28), and the insertion hole. A casing (3) that is non-rotatably inserted into (28)
4) and a rotating shaft (36) having a protruding shaft portion (36a) that generates a high torque when rotating in a predetermined direction with respect to the casing (34) and projects outward of the casing and has a polygonal outer peripheral surface. An outer frame (60) non-rotatably inserted into the insertion hole (28), and a rotatably mounted outer frame (60) protruding outwardly of the outer frame (60) and having a polygonal outer peripheral surface. A rotating shaft (62) having a projecting shaft portion (76) having a shape, and a spring means mounted in the outer frame (60) and generating a restoring force when the rotating shaft (62) rotates in a predetermined direction ( 64), a rotary unit (22) and a spring unit (24)
And a rotary damper (26) for inserting the rotary damper unit (22) and the spring unit (24) outwardly, respectively, when inserting the spring into the insertion hole (28). Unit (22)
Has a bearing portion (52, 52) in which a fitting hole (54, 54) having a shape corresponding to the shape of the protruding shaft portion (36a) and the protruding shaft portion (76) of the spring unit (24) is formed. An automatic return type hinge composed of an outer wing (14).

The outer peripheral surfaces of the casing (34) of the rotary damper unit (22) and the outer frame (60) of the spring unit (24) have a polygonal shape, and the outer wing (12) of the inner wing (12). The insertion hole (28) has a polygonal shape corresponding to the shapes of the casing (34) and the outer frame (60), and preferably each has a hexagonal shape.

[0010]

In order to assemble the automatic return type hinge (10) according to the present invention, one of the elastic springs (26) is placed at the center of the insertion hole (28) of the cylindrical portion (16) of the inner wing (12). The rotary damper unit (22) is inserted from the side, and the spring unit (24) is inserted from the other side. Then, the projecting shaft portion (36) of the rotary damper unit (22) is compressed by compressing the elastic spring (26).
a) and the protruding shaft part (76) of the spring unit (24) are inserted so as to be housed in the insertion hole (28), and the bearing parts (52, 5) of the outer wing (14) are inserted.
2) so as to match the end faces of the projecting shaft portions (36a, 76), the compressed elastic springs (2)
6) The elastic force of 6) urges the rotary damper unit (22) and the spring unit (24) outward, so that the protrusion shaft portions (36a, 36a,
76) fits in naturally. Therefore, since the rotary damper unit (22) and the spring unit (24) are unitized, the assembly of the hinge (10) is very simple and can be performed with one touch.

Next, regarding the operation, for example, when the automatic return hinge (10) according to the present invention is attached to the door, when the door is opened, the damper function of the rotary damper unit (22). Does not affect the rotation in one direction, but the door is opened while rotating the torsion coil spring (64) of the spring unit (24) in the twisting direction.
At this time, the opening force of the blade and the door only opens against the restoring force of the torsion coil spring (64).

Then, when the hand is released from the opened door, the torsion coil spring (64) is twisted to the maximum extent, so that the restoring force causes the door to move in the closing direction.
In this case, the damper function of the rotary damper unit (22) works, and the door is closed slowly and quietly.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to an embodiment shown in the drawings. FIG. 1 is an exploded perspective view of an automatic return type hinge (10) according to the present invention, which includes an inner wing (12) as a fixing plate and an outer wing (14) rotatable with respect to the inner wing (12). And have.

The inner wing (12) has a tubular cylindrical portion (16) serving as a shaft portion and, for example, a flat plate-shaped mounting portion (18) mounted on the pillar side of the door opening. There is. The mounting portion (18) has screw holes (20, 20) for fixed mounting. Further, the cylindrical portion (16) includes a rotary damper unit (22), a spring unit (24) and the rotary damper unit (2).
2) and the spring unit (24) so as to be interposed between the rotary damper unit (22) and the spring unit (2).
4) is formed with an insertion hole (28) into which an elastic spring (26) that elastically elastically presses (4) and (4) is inserted.

A known one is used as the rotary damper unit (22). For example, JP-A-4-28
The high torque rotary damper disclosed in JP 2039 is used.

As shown in FIG. 5, this known high torque rotary damper has a casing (34) having a chamber (32) in which a viscous fluid (30) is filled, and a casing (34) for the casing (34). A rotary shaft (36) that is relatively rotatably combined and rotatable in the chamber (32) and a shaft blade (38) provided in the axial direction of the rotary shaft (36) are provided with play in the rotational direction. And a movable valve (40) made of synthetic resin, which can be held and locked and whose other surface is rotatable while slidingly contacting the wall surface of the chamber (32) or the peripheral surface of the rotating shaft (36). , A plurality of fluid passages (42, 44, 46) having different cross-sectional areas are provided at the contact portion between the shaft vane (38) and the movable valve (40) in order to change the resistance according to the direction of relative rotation. It has a structure. (48) is a stopper integrally formed with the casing (34).

This high-torque rotary damper rotates with almost no resistance against rotation in one direction, but generates high resistance only during rotation in the opposite direction. That is, the small passage (4
4) It acts so as to generate a large resistance only in the rotation in the direction. That is, the resistance in the case of rotation toward the small passage (44) side causes a very high rotational torque because the movable valve (40) and the shaft blade (38) are in contact with each other to eliminate the gap.

Returning to FIG. 1, the rotary damper unit (2
The casing (34) of 2) is the inner wing (12).
Since the shaft portion (16) cannot be rotated with respect to the insertion hole (28), the outer surface of the casing (34) and the insertion hole (2).
8) has a hexagonal shape and the rotary damper unit (22) is inserted into the insertion hole (28) so that the rotary damper unit (22) is mounted in the insertion hole (28) in a non-rotatable state. In the illustrated example, a hexagonal shape is illustrated, but the present invention is not limited to a hexagonal shape, but may be a non-rotatable attachment to the insertion hole (28), and other polygonal shapes. May be In addition, the casing (3
Although 4) may be circular, as shown in FIG. 2, one groove (28a) extending in the axial direction is formed in the inner wall of the insertion hole (28).
One or more ridges (34a) that are formed in one or more and that fit into the groove (28a) are formed in the casing (34), and the casing (34) is inserted into the insertion hole (28). It may be fixedly mounted without rotating.

The rotary damper unit (22) has a protruding shaft portion (36a) protruding from the casing (34) at one end of the rotating shaft (36).
The outer peripheral surface of a) is formed into a hexagon. Although the protruding shaft portion (36a) is hexagonal in the illustrated example, the protruding shaft portion (36a) is not limited to a hexagonal shape, and may be another regular polygonal shape.

3 and 4 show an enlarged sectional view and a side view of the spring unit (24).

This spring unit (24) has substantially the same external shape as the rotary damper unit (22), and has an outer frame (60), a rotary shaft (62), and a torsion coil spring (64). )have.

The outer frame (60) has a cylindrical shape in which one end is open and the other end is closed, and the rotary damper unit (2
Similar to 2), the outer peripheral surface has a hexagonal shape, and the shaft portion (16) of the inner wing (12) has a hexagonal insertion hole (28).
Is fitted and inserted into the insertion hole (28) so as not to rotate relative to the insertion hole (28). The outer peripheral surface of the outer frame (60) is hexagonal as an example in the illustrated example, but it is not necessary to be particular about this.

The rotating shaft (62) has a small diameter shaft portion (66).
And a large diameter shaft portion (68), the small diameter shaft portion (6
A bush (70) made of synthetic resin is rotatably fitted in 6), and the tip end side of the small diameter shaft portion (66) is the outer frame (60).
It is pivotally supported on the obstruction side. Large diameter shaft (68)
On the side, through the washer (72) made of synthetic resin, the screw ring (7) is provided at the open portion of the outer frame (60).
4) is screwed in, and the screw ring (74) has a function as a stopper that prevents the rotary shaft (62) from falling out of the outer frame (60).

Further, the rotating shaft (62) has an outer frame (6
0) has a protruding shaft portion (76) protruding outward. The outer peripheral surface of the protruding shaft portion (76) is formed in a hexagonal shape in the illustrated example.

One end of the torsion coil spring (64) is detachably fixedly supported on the large-diameter shaft portion (68) of the rotary shaft (62), and the other end thereof closes the outer frame (60). The part is also detachably fixedly supported in the frame. Therefore, when the rotating shaft (62) is rotated in a predetermined direction, the torsion coil spring (64) is further twisted, so that the torsion coil spring (64) has a restoring force for returning.

Torsion coil spring (64) shown
Exemplifies a square screw having a square cross section, but a coil spring having a circular cross section may be used, and not limited to a coil spring, a leaf spring having a ring cross section may be used. Well, the point is that the rotating shaft (62) is rotated in a predetermined direction to store the restoring force.

Naturally, the restoring force of the torsion coil spring (64) can be freely changed depending on the size of the cross section and the number of turns of the coil.

The outer wing (14) has a mounting hole (5).
0a, 50a) and a bearing portion (52, 5) provided at both ends of the flat plate portion (50) at both ends of the flat plate portion (50).
2) having an arm (56, 56).

There is a space between the bearing portions (52, 52) which is slightly longer than the axial length of the cylindrical portion (16) of the inner wing (12).
52), a hexagonal protruding shaft portion (36a) of the rotary shaft (36) of the rotary damper unit (22) ,
Same as the rotation shaft (62) of the spring unit (24)
Fitting holes (54, 54) into which the hexagonal protruding shaft portion (76) is fitted are formed.

The automatic return type hinge (10) according to the present invention is constructed as described above. Next, its assembling method and operation will be explained.

First, the inner wing (1
In the insertion hole (28) of the cylindrical portion (16) of (2), the rotary damper unit (22) is arranged from one side and the spring unit (2) is arranged from the other side with the elastic spring (26) as the center.
Insert 4) respectively. Then, the projecting shaft portion (36a) of the rotary damper unit (22) and the projecting shaft portion (76) of the spring unit (24) are compressed by the elastic spring (26) so that the insertion hole (2).
8) Inserted so as to be stored inside, and the outer wing (1
4) The bearing portions (52, 52) of 4) are connected to the protruding shaft portions (3
6a, 76) so that they are aligned with the end faces of the rotary damper unit (22) and the spring unit (24) by the elastic force of the compressed elastic spring (26).
Is urged outward, and the respective projecting shaft portions (36a, 76) are naturally fitted into the respective fitting holes (54, 54). Therefore, since the rotary damper unit (22) and the spring unit (24) are unitized, the assembly of the hinge (10) is very simple and can be performed with one touch.

Next, the operation will be described. For example, when the hinge (10) according to the present invention is attached to a door, the damper of the rotary damper unit (22) is opened when the door is opened. Although the function does not affect the rotation in one direction, the door is opened while rotating the torsion coil spring (64) of the spring unit (24) in the twisting direction. In this case, the force to open the door, requires a force against the restoring force of the torsion coil spring (64).

Then, when the hand is released from the opened door, the torsion coil spring (64) is twisted to the maximum extent, so that the restoring force causes the door to move in the closing direction.
In this case, the damper function of the rotary damper unit (22) works, and the door is closed slowly and quietly.

In this embodiment, the case where the automatic return type hinge (10) according to the present invention is used for a door hinge has been described, but the present invention is not limited to this and, for example, an automobile. Bonnet cover,
May be used for hinges such as trunk covers, etc.,
It can be used for various opening / closing operations.

[0035]

As described above, according to the present invention, both the rotary damper unit and the spring unit are unitized and housed in the insertion hole of the cylindrical portion that serves as the shaft of the hinge. It is very easy to assemble the hinge of and can be done with one touch. Moreover, the damper function and the return function can be obtained by one hinge, and it is not necessary to manufacture a plurality of types of hinges in manufacturing, and the cost can be reduced.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an automatic return type hinge according to the present invention.

FIG. 2 is a partially exploded perspective view showing another embodiment of the casing of the rotary damper unit and the insertion hole of the inner wing.

FIG. 3 is an enlarged cross-sectional view of a spring unit.

FIG. 4 is a right side view of the spring unit in FIG.

FIG. 5 is a schematic cross-sectional view showing the operation of a known rotary damper used as the rotary damper unit of the present invention.

[Explanation of symbols]

10 Automatic return hinge 12 inner wing 14 Outer wing 16 Cylindrical part 22 Rotational damper unit 24 spring unit 26 firing springs 28 insertion holes 34 casing 36 rotation axis 36a protruding shaft 52 Bearing 54 Fitting hole 60 outer frame 62 rotation axis 64 torsion coil spring 66 Small diameter shaft 68 Large diameter shaft 76 Projection shaft

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) E05F 1/00 E05F 3/00 E05F 11/00

Claims (2)

(57) [Claims] 1. An inner wing (12) having a cylindrical portion (16) which is a shaft portion having an insertion hole (28) formed therein, and a casing (34) which is non-rotatably inserted into the insertion hole (28). , and a rotary shaft (36) having a protruding shaft portion outer circumferential surface that protrudes outward has a polygonal generates a high torque when the predetermined rotating relative to the casing (34) the casing (36a) Rotary damper unit (22)
And an outer frame (6) non-rotatably inserted into the insertion hole (28).
0) and a rotary shaft (62) rotatably mounted on the outer frame (60) and having a projecting shaft portion (76) projecting outward of the outer frame (60) and having a polygonal outer peripheral surface, The outer frame (6
0), a spring unit (24) having spring means (64) for generating a restoring force when the rotary shaft (62) rotates in a predetermined direction, the rotary damper unit (22) and the spring unit. When inserting (24) into the insertion hole (28), an elastic spring (26) interposed in the center to elastically elastically rotate the rotary damper unit (22) and the spring unit (24), respectively. Projecting shaft portion (36a) of the rotary damper unit (22)
And the protruding shaft portion (7) of the spring unit (24).
6) Fitting holes (54, 5) having a shape corresponding to the shape of
An outer wing (14) having a bearing portion (52, 52) formed with 4), and an automatic return type hinge. 2. The casing (34) of the rotary damper unit (22) and the outer frame (60) of the spring unit (24) have a polygonal outer peripheral surface, and an insertion hole for the inner wing (12). (28) is the casing (3
4) The hinge according to claim 1, wherein the hinge has a polygonal shape corresponding to the shape of the outer frame (60).