JP2000160913A - Pivot hinge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pivot hinge with adjusting function favorable for a light-weight door for built-in furniture such as a shoe cupboard. SOLUTION: An upper hinge and a lower hinge 4 constitute a pivot hinge. An attitude correction mechanism for door 1 is provided in the lower hinge 4. The lower hinge 4 has a case 5 embedded in the door 1 and an adjusting shaft body 6 pivotally supported by the case 5 so as to turn and displace. A spherical shaft part 7 is protrusively provided at a lower end of the adjusting shaft body 6. The spherical shaft part 7 is pivotally supported by a socket 8 fixed on a door frame 2. The adjusting shaft body 6 is pivotally supported in a bearing hole 12 of the case 5 so as to turn and displace and can be fixed by a screw 9 at an arbitrary displacement position. By adjusting inclination of the adjusting shaft body 6, a suspension lower part of the door 1 is displaced to the right and left using the upper hinge as a support point to correct an assembly attitude of the door 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pivot hinge applied to a relatively lightweight door such as a furniture door.

[0002]

2. Description of the Related Art Furniture that is manufactured independently, such as a chest of drawers and storage furniture, has a door frame that is manufactured with high precision, so that the positional relationship between the upper and lower pivot hinges is less likely to be out of order.
However, in the case of built-in furniture provided with the building, such as a clog box or closet, the door frame or the door is easily distorted, so the door is mounted in an inclined position with respect to the door frame, and the door is The gap between the door frame and the door frame is often not uniform. Further, even if such a problem occurs, the inclination (gap) of the door cannot be adjusted at present.

With respect to the pivot hinge of the present invention, it is disclosed in Japanese Unexamined Patent Publication No. Hei 9 (1999) that the door is supported by a hinge shaft having a spherical shaft portion, and the hinge shaft is adjusted to the front, rear, left and right to correct the installation posture of the door. This is known from Japanese Patent Publication No. -209641.

[0004]

The above-mentioned pivot hinge is intended for large and heavy doors and windows, and can perform precise posture correction, but has a complicated structure due to the large number of components. Production costs are high. In other words, it would be too exaggerated in terms of cost and function to be applied to the furniture doors such as the shoe boxes and closets mentioned above.

An object of the present invention is to provide a pivot hinge having a posture correcting function, which is suitable for a relatively lightweight and small-sized door. An object of the present invention is to provide an inexpensive pivot hinge that can easily correct the installation posture of a door even when a door or a door frame is distorted after construction, and that has a simple structure. SUMMARY OF THE INVENTION An object of the present invention is to provide a pivot hinge that can easily attach and detach a door to and from a door frame, thereby saving labor of construction, and removing the door from the door frame to clean the inside of the door. Is to do.

[0006]

A pivot hinge according to the present invention is provided between an upper end and a lower end of a door 1 and a door frame 2, and supports an upper hinge 3 and a lower side for swingably opening and closing the door 1. It consists of a hinge 4. The lower hinge 4 includes a case 5 buried and fixed to a lower end of the door 1 and a door 5 supported by the case 5.
An adjusting shaft body 6 having a spherical shaft portion 7 protruding below the lower surface of the
The socket 8 is embedded and fixed in the door frame 2 and receives and supports the spherical shaft portion 7 of the adjustment shaft body 6. The boss 19 provided at the upper end of the adjusting shaft 6 is provided with a bearing hole 12 provided in the case 5.
Thus, the door 1 is pivotally supported so as to be rotatable about a front-rear central axis parallel to the thickness direction of the door 1. A screw 9 is provided between the case 5 and the boss 19 to fix the adjusting shaft 6 at an arbitrary rotational displacement position.

More specifically, the boss 19 is formed in a keyhole shape in cross section by a horizontal shaft 21 supported by the bearing hole 12 of the case 5 and a supporting leg 22 projecting below the horizontal shaft 21. Carrying leg 22
The rolling surface 23 provided on the lower surface is formed by an arc-shaped peripheral surface concentric with the horizontal axis 21.

The upper hinge 3 has a case 30 buried and fixed at the upper end of the door 1, and is vertically supported and supported by the case 30, and is urged by a spring 32 so as to protrude above the upper surface of the door 1. 31 and a socket 8 buried and fixed to the door frame 2 and supporting the vertical axis 31. An operating tool 33 for retracting the vertical axis 31 into the case 30 against the urging force of the spring 32 is provided integrally with the vertical axis 31.

Another pivot hinge according to the present invention is provided between the upper and lower ends of the door 1 and the door frame 2, and supports the door 1 so that it can swing open and close.
Consists of The lower hinge 4 includes a case 5 embedded and fixed to a lower end of the door 1, an adjustment shaft body 6 having a spherical shaft portion 7 supported by the case 5 and projecting downward from the lower surface of the door 1, and a door frame 2. The socket 8 is embedded and fixed and receives and supports the spherical shaft portion 7 of the adjusting shaft body 6. The boss 19 provided at the upper end of the adjustment shaft 6 is guided and supported by a guide hole 43 provided in the case 5 so as to be slidable left and right. A screw 9 for fixing the adjusting shaft 6 at an arbitrary sliding position between the case 5 and the boss 19.
Is provided.

[0010]

In the state where the door 1 is incorporated in the door frame 2, for example, when the swinging tip of the door 1 is inclined downward or upward, the lower hinge 4 is adjusted. Thereby, the door 1 can be corrected to a proper installation posture. Specifically, after the screw 9 is loosened, the adjusting shaft body 6 is rotationally displaced along the bearing hole 12 of the case 5,
The hinge center axis of the lower hinge 4 is tilted, and the lower support position of the door 1 is changed by a horizontal displacement component accompanying the tilt. As a result, the door 1 is swung in the left-right direction with the upper hinge 3 as a fulcrum, and thus the inclination of the posture and the irregularity of the gap can be corrected. Even when the hinge central axis of the lower hinge 4 is tilted, a spherical shaft portion 7 is provided at the lower end of the adjusting shaft 6 to secure smooth rotation of the adjusting shaft 6 when the door is opened and closed. It is supported by.

Since the adjustment of the posture is performed by pivotally supporting the adjusting shaft 6 around the center axis in the front-rear direction, the hinge is composed of the case 5, the adjusting shaft 6, the socket 8 and the screw 9. In spite of being a hinge having an adjusting function, the structure can be simplified and the cost required for manufacturing can be reduced.

The weight of the door 1 supported by the pivot hinge is concentrated on the lower hinge 4. In order to carry out the tilting displacement of the adjustment shaft body 6 without burdening the weight, a supporting leg 22 is provided below the horizontal shaft 21, and the rolling surface 23 on the lower surface thereof is connected to the horizontal shaft 2.
It is formed by a circular arc peripheral surface concentric with 1. Also, rolling surface 2
When the adjusting shaft 6 is tilted and displaced, the door lower surface in the vicinity of the lower hinge 4 is prevented from being displaced up and down by making the adjusting shaft 6 tilt and displace. Only corrective displacement can be made.

In the pivot hinge, the door 1 is pivotally supported by a door frame 2 via a pair of upper and lower hinge shafts. Therefore, when a pair of hinge shafts are provided on the door 1, how to assemble them becomes a problem. However, if the longitudinal axis 31 of the upper hinge 3 is supported by the case 30 so as to be able to move up and down, and if necessary, the longitudinal axis 31 can be retracted into the case against the spring 32, the longitudinal axis 31 can be retracted. The door 1 can be easily attached to or detached from the door frame 2 simply by performing the on operation. Since the door 1 can be removed to open the entire opening surface,
It is also advantageous in that it is easier to take in and out of stored items and to clean the inside of the door.

Guide hole 4 in which adjustment shaft 6 is provided in case 5
In the lower hinge 4 which is guided and supported so as to be slidable left and right in FIG. As a result, since the door 1 is swung in the left-right direction with the upper hinge 3 as a fulcrum, the door posture can be corrected and the gap can be adjusted in the same manner as the lower hinge.

[0015]

1 to 6 show an embodiment of a pivot hinge according to the present invention. In FIG. 2, reference numeral 1 denotes a door, and 2 denotes a door frame. The pivot hinge comprises an upper hinge 3 and a lower hinge 4 provided between the top and bottom of one side end of the door 1 and the door frame 2, and the door 1 can be freely opened and closed by the pair of hinges 3.4. I support it.

In FIG. 3, a lower hinge 4 includes a case 5 embedded and fixed on the inner surface of the lower end of the door 1, an adjustment shaft 6 supported by the case 5, and a ball provided at the lower end of the adjustment shaft 6. It is composed of a socket 8 for receiving the shaft portion 7, a screw 9, and the like.

In FIG. 4, the case 5 has a main body 11 having a C-shaped cross section which is press-fitted into a mounting hole of the door 1, and has a bearing hole 12 and an insertion hole 13 for the screw 9 on the inner surface of the main body 11. Adjacently formed on the same axis, the lower surface of the main body 11 and the insertion hole 1
It consists of a plastic molded product with flanges 14 and 15 projecting from each of the three end faces. At three places on the peripheral surface of the main body 11, a group of claws 16 for retaining is formed in a saw blade cross section. An opening 17 for the adjustment shaft 6 is formed on the lower surface side of the bearing hole 12.

The adjusting shaft 6 is formed of a plastic molded product having a spherical shaft 7 projecting from the center of the lower surface of a boss 19 having a keyhole-shaped cross section. The boss portion 19 includes a horizontal shaft 21 supported by the bearing hole 12 so as to be rotatable around a front and rear central axis parallel to the thickness direction of the door 1, and a supporting leg projecting below the horizontal shaft 21. 22. When the horizontal shaft 21 is fitted into the bearing hole 12 of the case 5, the support leg 22 and the spherical shaft portion 7 protrude downward through the opening 17 through the opening 17. Can be rotationally displaced along the bearing hole 12. On the lower surface of the supporting leg 22, a rolling surface 23 formed of a circular arc surface concentric with the horizontal shaft 21 is formed. The spherical shaft portion 7 is formed of a partial spherical body, and the spherical diameter thereof matches the diameter of the pivot hole 24 of the socket 8.

In order to fix the adjustment shaft 6 mounted in the bearing hole 12 at an arbitrary rotational displacement position, the case 5 and the boss 19 are fixed.
And a screw 9 is provided therebetween. In this embodiment, the screw 9 is constituted by a screw hole 25 formed through the axis of the horizontal shaft 21 and a screw 26 screwed into the screw hole 25 through the insertion hole 13. The adjustment shaft 6 can be rotated only when the screw 26 is loosened.

The socket 8 is formed of a bottomed cylindrical plastic molded article having a pivot hole 24 opening upward, and a flange 27 is formed to project from the upper end opening. Claws 2 similar to the above-described claws 16 are provided on four peripheral surfaces of the cylindrical wall.
8 is formed in a saw blade sectional shape. The socket 8 is press-fitted to the door frame 2 and the spherical shaft portion 7 of the adjustment shaft body 6 is
4 to support. Furthermore, the rolling surface 23 on the lower surface of the support leg 22
Is supported on the upper surface of the flange 27. That is, the weight of the door 1 is supported by the flange 27 of the socket 8.

3 and 5, an upper hinge 3 has a case 30 buried and fixed to the inner surface of the upper end of the door 1, a vertical axis 31 guided and supported by the case 30 so as to be vertically movable, And a compression coil-type spring 3 for urging the longitudinal axis 31 upward from the case 30.
2, an operating tool 33 for retracting the longitudinal axis 31 into the case against the urging force of the spring 32, and a socket 8 embedded and fixed in the door frame 2. Since the socket 8 is the same as the socket described above, it is not shown in FIG.

The case 30 has a main body portion 34 having a C-shaped cross section which is press-fitted into a mounting hole of the door 1. Consists of molded articles. The main body 34 has a guide hole 37 having a keyhole-shaped cross section for slidingly guiding the longitudinal axis 31.
Are formed so as to open on the side of the upper flange 35, and from the side of the side end flange 36 toward the guide hole 37,
A vertical groove 38 for receiving the operation tool 33 is provided. Flute 38
A concave portion 39 for receiving a fingertip is formed in the periphery of the concave portion.
The case 5 of the lower hinge 4 is provided at three places around the main body 34.
Is formed.

The vertical axis 31 is formed of a cylindrical plastic molded product that opens downward, and a lower half of the peripheral surface is provided with a square shaft section 42 for preventing rotation. As shown in FIG.
Most of 2 is accommodated in the cylindrical wall of the vertical axis 31. The operating tool 33 is driven and fixed to the lower portion of the square shaft portion 42 via the vertical groove 38, and is integrated with the vertical axis 31. The operating tool 33 in this embodiment uses a commercially available spring pin. In a state where the vertical axis 31 is incorporated in the case 30, the operating tool 33 contacts the upper end of the vertical groove 38 and The escape is prevented.

According to the upper hinge 3 having the retractable vertical axis 31 as described above, the operating tool 33 is pushed down against the spring 32 as shown in FIG. Since the door 1 can be retracted inside and separated from the socket 8, the door 1 can be extremely easily assembled to or removed from the door frame 2. When correcting the posture of the door 1 assembled to the door frame 2, the adjustment shaft 6 of the lower hinge 4 is pivotally displaced with respect to the case 5 to move the lower end support position of the door 1 in the left-right direction. .

More specifically, as shown in FIG. 1, the adjusting shaft 6 is tilted relatively to the case 5 by loosening the screw 26, and the door 1 is moved by the horizontal component (dimension indicated by the arrow) accompanying the tilting. Move horizontally. At this time, the longitudinal axis 31 of the upper hinge 3 is captured and supported by the socket 8. Therefore, the door 1 has the vertical axis 3
With the pivot point 1 as a fulcrum, the swinging tip side is tilted down so that the posture can be corrected by that amount. Even when the adjustment shaft 6 is tilted, the door weight acts on the support leg 22. Therefore, the rolling surface 23 received by the flange 27 is formed of a circular arc surface concentric with the horizontal axis 21 so that the entire door 1 can be easily displaced in the left-right direction via the rolling surface 23. Also, when the entire door 1 moves left and right, the height of the lower surface of the door near the lower hinge 4 can be kept constant.

In addition to the embodiment described above, the screw 9 is
And a screw shaft integrated with the nut, and a nut screwed into the screw shaft. The rolling surface 23 does not necessarily need to be concentric with the horizontal axis 21. When a collar is provided between the case 5 and the socket 8 to move laterally along with the tilt of the adjusting shaft 6, the rolling surface 23 can be omitted.

FIG. 7 shows another lower hinge according to the present invention. In this case, the adjustment shaft 6 is supported by the case 5 so as to be slidable left and right, so that the posture of the door 1 can be corrected.
For this purpose, the case 5 is provided with a horizontally long guide hole 43, and the insertion hole 12 for the screw 26 is formed by a horizontally long groove. Further, a boss 19 formed of a square axis is provided on the upper end of the adjustment shaft body 6.
Which was supported by the guide hole 43 so as to be slidable left and right. Since other configurations are the same as the previous embodiment,
The same reference numerals are given to the same members and the description is omitted. The adjustment shaft 6 can be adjusted and slid in the left and right directions from a center position shown by a solid line to a position shown by an imaginary line.

[Brief description of the drawings]

FIG. 1 is a sectional view taken along line BB in FIG.

FIG. 2 is a front view of a clog box.

FIG. 3 is a sectional view taken along line AA in FIG. 2;

FIG. 4A is an exploded perspective view of a lower hinge, and FIG.
(B) is a front view of the lower hinge.

FIG. 5A is an exploded perspective view of an upper hinge, and FIG.
(B) is a front view of an upper hinge.

FIG. 6 is a sectional view showing an operation state of an upper hinge.

FIG. 7 is a sectional view showing another embodiment of the lower hinge.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Door 2 Door frame 4 Lower hinge 5 Case 6 Adjusting shaft body 7 Ball shaft part 8 Socket 9 Screw 12 Bearing hole 19 Boss part 21 Horizontal axis 22 Bearing leg 23 Rolling surface

Claims (4)

[Claims] 1. A pivot hinge comprising an upper hinge (3) and a lower hinge (4) provided between an upper end and a lower end of a door (1) and a door frame (2) for supporting the door (1) in a swingable manner. The side hinge 4 is a case 5 embedded and fixed to the lower end of the door 1.
And an adjustment shaft body 6 having a spherical shaft portion 7 supported by the case 5 and projecting downward from the lower surface of the door 1, and a ball shaft portion 7 of the adjustment shaft body 6 embedded and fixed in the door frame 2 and supported. A boss 19 provided at the upper end of the adjusting shaft body 6 is rotatably displaceable around a central axis parallel to the thickness direction of the door 1 through a bearing hole 12 provided in the case 5. A pivot hinge which is pivotally supported and has a screw 9 provided between the case 5 and the boss 19 for fixing the adjusting shaft 6 at an arbitrary rotational displacement position. 2. The boss portion 19 is formed in a keyhole shape in cross section by a horizontal shaft 21 supported by the bearing hole 12 of the case 5 and a supporting leg 22 projecting below the horizontal shaft 21. The pivot hinge according to claim 1, wherein the rolling surface (23) provided on the lower surface of the leg (22) is formed by an arc-shaped peripheral surface concentric with the horizontal shaft (21). 3. An upper hinge 3 is buried and fixed to the upper end of the door 1 and is supported by the case 30 so as to be vertically movable. It comprises a vertical axis 31 and a socket 8 embedded and fixed in the door frame 2 and supporting the vertical axis 31. The vertical axis 31 is retracted into the case 30 against the urging force of the spring 32. The pivot hinge according to claim 1, wherein the operating tool is provided integrally with the longitudinal axis. 4. A pivot hinge comprising an upper hinge 3 and a lower hinge 4 provided between an upper end and a lower end of a door 1 and a door frame 2 for swingably opening and closing the door 1. The side hinge 4 is a case 5 embedded and fixed to the lower end of the door 1.
And an adjustment shaft body 6 having a spherical shaft portion 7 supported by the case 5 and projecting downward from the lower surface of the door 1, and a ball shaft portion 7 of the adjustment shaft body 6 embedded and fixed in the door frame 2 and supported. A boss 19 provided at the upper end of the adjusting shaft 6 is guided and supported by a guide hole 43 provided in the case 5 so as to be slidable left and right. A pivot hinge provided with a screw 9 for fixing the adjustment shaft body 6 at an arbitrary sliding position.