JP2000310079A - Four pivotal shaft type invisible hinge to be arranged in door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hinge for largely opening a door to easily put goods in and out, prevented from being viewed from the outside when the door is closed. SOLUTION: A pair of first upper and lower links 6 are pivotally mounted to a first pivotal hole 3 in a fixed blade 2 via a first fixed pivotal shaft 7 and the other ends of the first links 6 are pivotally mounted to a first movable pivotal hole 23 in a door fixed body 22 via a first movable pivotal shaft 24, and a second link blade 8 is pivotally mounted to a second pivotal hole 5 in the fixed blade 2 via the second pivotal hole 5 and the other end of the second link blade 8 is pivotally mounted to a second movable pivotal hole 25 located close to the free end of a door 20 beyond the first movable pivotal shaft 24 via a second movable pivotal shaft 26. The first movable pivotal shaft is movable to the right and left of a plane of a mounting opening 8 of the door 20 beyond a change point P on a line O connecting the first fixed pivotal shaft 7 and the second movable pivotal shaft 26.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hidden hinge comprising a four-axis pivot hinge in which a door is disposed inside an opening of a fixed frame when a door is closed.

[0002]

2. Description of the Related Art When a door is closed, a four-axis system in which components such as a fixed wing plate and a rotating wing plate or a pivot connecting these components such as a link are hidden in an opening of a fixed frame and on a back side of a door. Hidden hinges with the Axis of are already done. However, in these known methods, the turning angle of the general door is ignorantly transferred, or the hinge situation tends to narrow the opening. In many cases, the door is not stable when it is open.

[0003]

SUMMARY OF THE INVENTION The present invention increases the opening angle of a door using a hidden hinge hinged to the four-axis pivot, widens the opening when the door is opened, and opens the door. This is for stabilization.

[0004]

Means for Solving the Problems In order to achieve the above object, the present invention provides a first pivot hole 3 at the tip of a fixed wing plate 2 fixed to an inner surface 1a of a fixed frame 1 and an inner surface of a door 20. The upper ends of a pair of upper and lower fixed arms 4 extending in the direction approaching are provided with second pivot holes 5 on the same axis, respectively, and a pair of upper and lower first links 6 above and below the first pivot hole 3 are first fixed pivots. 7, the other end of the pair of first links 6
A first movable pivot hole 23 provided in a door fixed body 22 fixed to the hinge side end 21 of the door 20 is pivotally connected by a first movable pivot hole 24, and a second movable pivot hole 5 is provided in the second pivot hole 5. The link blade 8 is pivoted in the second pivot hole 5 by a second fixed pivot 9, and the other end of the second link blade 8 is a part of the door fixed body 22 of the door 20, With reference to the door 20, the first movable link 24 is pivotally connected to the second movable pivot hole 25 at a position closer to the free end of the door 20 from the first movable pivot 24 by a second movable pivot 26. And the second link blade 8
Is rotatably provided around the first fixed pivot 7 and the second fixed pivot 9 so as to be movable in a mutually different plane without interference with each other. The door 20 can be moved to the right or left on the surface of the mounting opening 8 beyond the thought point P on the line O connecting the pivot 7 and the second movable pivot 26.

[0005] The fixed wing plate 2 of the present invention is mounted on a support or fixed frame 1 provided inside the opening 10 by a suitable bolt and nut 3.
0, and the door fixing body 22 is fixed along the inner edge 21 of the door 20 with a fixing screw (not shown). Thus, when the door 20 is closed, the first link 6 and the second link blade 8 move clockwise in FIG. 1 around the respective first and second fixed pivots 7 and 9. Rotate, the first movable pivot 24 moves away from the line O, and the opening 1
The doors 20 are completely aligned inside the opening 10 and are flush with each other. At this time, the door fixed body 22 and the second ring wing 8 are in a state of being substantially linearly connected inside the door 20 (see FIG. 1).

Next, when the door 20 is turned in the opening direction, both the second link blade 8 and the first link 6 are turned counterclockwise in FIG. 2, and the door 20 is moved from the state shown by the solid line in FIG. The state becomes a chain line, and the first fixed pivot 5, the first movable pivot 24, and the second movable pivot 26 finally become a straight line O (see FIG. 3). That is, the first movable pivot 24 is connected to the first fixed pivot 7.
When the first movable pivot 24 reaches the thought point P on the line O connecting the respective axes of the second movable pivot 26 and the second movable pivot 26, the first link 6 further rotates counterclockwise. Move, but the second link blade 8 rotates clockwise again,
The door fixing body 22 is completely inverted (see FIG. 4).
0, the closed state rotates about 150 degrees, and finally the hinge 20 side edge 21 of the door 20 comes into contact with the inner surface side of the first link 6 and the second link blade 8, and the second movable pivot 26, the first movable pivot 24 The door 20 is stabilized in a fully opened state in which the doors 20 are aligned substantially in a straight line in the order of the second fixed pivot 9 and the second fixed pivot 9 (see FIG. 5).

When the door 20 is closed, if the door 20 is turned in the opposite direction, the components move in the reverse order to close the opening. Since the first link 6 and the second link blade 8 are completely displaced in the axial direction of the pivots 5 and 7, their movements do not interfere with each other.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the embodiment shown in FIGS. 1 to 6, the width of the fixed vane plate 2 is approximately 40 mm,
The height in the direction is approximately 85 mm. A first pivot hole 3 is provided on the fixed wing plate 2 side. Further, a second pivot hole 5 is provided in a vertical line at the tip of a pair of upper and lower fixed arms 4 which pass through the first pivot hole 3 and are vertically divided into two parts. The dimension between the axial centers of the first pivot hole 3 and the second pivot hole 5 is 20 mm, and the fixed arm 4 is formed to be bent 45 degrees from the plane of the fixed blade 1 to the front side. Above and below the first pivot hole 3, a pair of upper and lower first links 6 bent in the shape of a hiragana character is pivotally connected to the first pivot hole 3 by a first pivot 7. The bending angle is about 120 degrees, and the tip of the first link 6 is pivotally connected to the upper and lower surfaces of the door fixed body 22 on the first movable shaft 24. The first pivot 7 and the first movable shaft 24 have exactly the same shape, each having a bolt shape that can be tightened by a screwdriver, and the roots serving as the first fixed pivot 7 and the first movable shaft 24, respectively. In addition, these tip portions are the first pivot hole 3 or the first movable pivot hole 2.
3 are screwed portions 2a and 5a that can be screwed into the device. A second link vane plate 8 is inserted in the middle of the second pivot hole 5 and is pivotally connected by a second fixed pivot 9 which is linked vertically. The other end of the second link vane plate 8 is
It is pivotally connected by a movable pivot 26. The dimensions of the fixed shaft 9 of the second link blade 8 and the axis of the second movable shaft 26 are 26
mm The intermediate portion of the second link blade 6 is unevenly distributed outside a straight line connecting these center lines. The fixed wing plate 2 and the fixed arm 4 integral with the fixed wing plate 2, the pair of first links 6, and the second link wing plate 8, the door fixed body 22, are usually formed of a strong die-cast product.

The first movable pivot hole 23 to which the first movable pivot 24 of the door fixed body 22 is attached and the second movable pivot hole 25 to which the second movable pivot 26 is attached are both formed on the outer surface 2 of the door 20.
7, the door fixing body 22 is formed such that the first movable pivot hole 23 is located slightly away from the outer surface of the door 20 than the second movable pivot hole 25. .
The dimension between the centers of these two pivot holes 24, 26 is 10.
It is 4 mm.

That is, the fixed arm 4, the first link 6, and the second
The link wing plate 8 and the door fixed body 22 form a four-link mechanism, and the movement trajectory line Q of the first movable pivot 24 substantially coincides with the surface of the opening 10 to which the door 20 is attached, while the second movable pivot is provided. The motion trajectory line R of 26 is substantially inward and outward of the opening 10, and the first
The movable pivot 24 is provided so as to be able to reciprocate through a conceivable point P crossing a straight line Q connecting the respective axes of the first fixed pivot 7 and the second movable pivot 26. The door fixed body 22 and the door 20 are turned upside down. In other words, the direction between the axes of the first fixed pivot 7 and the second fixed pivot 9 and the dimension of the axes of the second fixed pivot 9 and the second movable pivot 26 are determined by the first link 6 and the first movable pivot 26. It is longer than the sum of the dimensions between the axes of the pivot 24 and the second movable pivot 26.

[0011]

According to the present invention, when the door 20 is started to be opened because it is configured as described above, and the door 20 starts to be opened, the edge 21 a of the hinge portion side end of the door 20 is fixed to the fixed movable frame 1 by the first movable pivot 2.
Since the fourth and second movable pivots 26 move to the free end side of the door 20, the edge 21 a separates from the hinge side edge 11 of the opening 10 of the fixed frame 1 and comes into contact with the door 20. This has the effect of further increasing the opening degree of the door 20, and furthermore, the first movable pivot 24 moves along a locus as described above, so that the hinge side edge 11 of the door 20 is opened at the opening of the fixed frame 1. Part 10
, The door 20 is easily turned, and a large movable angle range is obtained. In addition, when the door 20 is closed, the hinge is completely hidden inside the door 20 in the same manner as the conventionally known 4-axis hidden hinge in the door, and the appearance of the door is good. The edge 21 of the opening 20
Since it approaches the hinge side edge 11 of 0, there is an effect that a large gap cannot be formed in this portion.

[0012]

In the above embodiment, the door 20 opens and closes in a range of 150 degrees, in addition to the above effects.

[Brief description of the drawings]

FIG. 1 is a plan view showing a state where a hinge door according to an embodiment of the present invention is closed.

FIG. 2 is a partially omitted plan view in a state where a door is slightly opened.

FIG. 3 is a partially omitted plan view showing a state where the hinge is located on a thought point of a second movable pivot.

FIG. 4 is a partially omitted plan view showing a state where a door starts to turn at the hinge.

FIG. 5 is a partially omitted plan view of the hinge with a door completely opened.

FIG. 6 is an exploded perspective view of the hinge.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fixed frame 2 Fixed wing plate 3 First pivot hole 4 Fixed arm 5 Second pivot hole 6 First link 7 First fixed pivot 8 Second link wing plate 9 Second fixed pivot 10 Opening 20 Door 21 Hinge side End 22 Door fixed body 23 First movable pivot hole 24 First movable pivot 25 Second movable pivot hole 26 Second movable pivot 30 Bolt and nut

Claims (1)

[Claims] An end of a fixed wing plate fixed to an inner surface of a fixed frame is provided with a first pivot hole and a tip of a pair of upper and lower fixed arms extending in a direction approaching the inner surface of the door. A second pivot hole 5 is provided on the same axis, and a pair of upper and lower first links 6 is provided above and below the first pivot hole 3 by a first fixed pivot 7.
The other end of the pair of first links 6 is connected to a first movable pivot hole 23 provided in a door fixed body 22 fixed to the hinge side end 21 of the door 20. In the second pivot hole 5, a second link blade 8 is pivotally connected to the second pivot hole 5 by a second fixed pivot 9, and the other end of the second link blade 8 is connected to the second pivot hole 5. Is a part of the door fixed body 22 of the door 20, and the second movable pivot hole 25 is located at a position slightly closer to the free end of the door 20 than the first movable pivot 24 with respect to the door 20. The movable range of the pair of upper and lower first links 6 and the second link blades 8 pivotally attached to the second movable pivot 26 is
The first fixed pivot 7 and the second fixed pivot 7 are rotatably provided around the first fixed pivot 7 and the second fixed pivot 9 so as to be movable without interference with each other in different planes. A four-axis hidden hinge disposed in the door, which is movable to the left and right of the mounting opening 8 of the door 20 beyond a thought point P on a line O connecting the movable pivot 26.