JP2628143B2 - Biaxial hinge - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a two-shaft type having two parallel pivots at the center of rotation and having a door which can be opened up to 180 degrees with respect to a fixed frame such as a cabinet body or a switchboard storage box body. It is about hinges.

[0002]

2. Description of the Related Art A conventional biaxial hinge is connected to a fixed-side wing plate fixed to a fixed frame, a rotating-side wing plate fixed to a door, and one side to a fixed-side wing plate by a fixed-side pivot. The other side is constituted by an intermediate connecting plate connected to the turning blade by a turning pivot.
0 degree rotation, and the rotation side wing plate is 90
By rotating the door by a degree, the door having a large depth is opened up to 180 degrees with respect to the fixed frame.

The problem here is that the intermediate connecting plate is rotating with respect to the fixed-side blade around the fixed-side pivot, that is, when the pivot-side pivot is not sufficiently separated from the fixed frame. In this case, when the turning-side blade starts to rotate about the turning-side pivot with respect to the intermediate connecting plate, the end face of the door collides with the front portion of the fixed frame.

[0004] This collision causes distortion and deformation of the fixed frame and the door, and peeling and damage of the coating and the protective coating. Therefore, the collision should be appropriately prevented.

In the biaxial hinge disclosed in Japanese Utility Model Publication No. 4-5664, a lock lever having a stopper end and a cam end is mounted on an intermediate connecting plate by a horizontal pivot, and is engaged with the stopper end of the lock lever. A receiving portion for preventing the turning-side blade against the intermediate connecting plate is provided on the bearing arm portion of the turning-side blade, and a cam end of the lock lever is pushed to engage the stopper end with the receiving portion. A compression coil spring provided on the bearing arm of the fixed-side vane plate and inserted between the lock lever and the intermediate connecting plate urges the lock lever to return in the direction in which the stopper end is separated from the receiving portion.

In this biaxial hinge, the rotation of the intermediate connecting plate with respect to the fixed side blade and the rotation of the rotating side blade with respect to the intermediate connecting plate are correctly performed in a predetermined order by operating the lock lever in accordance with the rotational position. Therefore, the collision between the fixed frame and the door is avoided, but since the spring is used as the return bias of the lock lever, the spring characteristic is deteriorated due to rusting or corrosion of the spring or long-term use. Due to the deterioration, the return operation of the lock lever may not be performed smoothly or may not be able to return at all, and there is a problem in operation stability and durability.

[0007]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to rotate the intermediate connecting plate with respect to the fixed side blade and the rotating side blade with respect to the intermediate connecting plate in a predetermined order. An object of the present invention is to provide a biaxial hinge that prevents collisions and does not use any springs, so that it has excellent operational stability and durability.

[0008]

The biaxial hinge of the present invention will now be described with reference to the accompanying drawings, in which a fixed-side vane plate 2 fixed to a fixed frame 1 and a door 3 fixed to a door 3 are provided. And an intermediate connecting plate 7 having one side connected to the fixed-side blade 2 by a fixed-side pivot 5 and the other side connected to the rotary-side blade 4 by a turned-side pivot 6. .

An arcuate convex surface 8 centered on the pivot shaft 6 and an arcuate concave surface 9 intersecting the arcuate convex surface 8 are spaced 90 degrees apart from each other at a bearing arm portion 4a of the rotational blade 4. Provided in
An arc-shaped convex surface 10 centered on the fixed-side pivot 5 and an arc-shaped concave edge 11 intersecting with the arc-shaped convex surface 10 are provided on the bearing arm 2a of the fixed-side blade 2 at 90-degree intervals. The arc-shaped convex edge portion 10 of the plate 2 and the arc-shaped concave edge portion 9 of the turning-side blade 4 are formed to have the same diameter.

Further, the arc-shaped convex edge 8 of the rotating blade 4 and the arc-shaped concave edge 11 of the fixed blade 2 have the same diameter, and the arc-shaped convex edge 10 of the fixed blade 2 is rotated. 4 and the fixed-side pivot 5 so that the arc-shaped convex edge 8 of the rotating blade 4 is engaged with the arc-shaped concave edge 11 of the fixed blade 2. The side pivot 6 is arranged.

When the intermediate connecting plate 7 is rotated by 90 degrees in the opening direction with respect to the fixed-side blade 2, a first stop wall portion 12 that contacts the bearing arm 2 a of the fixed-side blade 2 is provided on the intermediate connecting plate 7. The rotation side wing plate 4 moves 9
When rotated by 0 degrees, a second stop wall portion 13 is provided on the intermediate connecting plate 7 with which the mounting plate portion 4b of the rotating side blade 4 abuts. When rotated by one degree, the bearing arm portion 4a of the rotation-side vane plate 4
When the intermediate connecting plate 7 is rotated 90 degrees in the closing direction with respect to the fixed-side blade 2, the other side surface 14 b is fixed to the fixed-side blade 2.
A third stop wall portion 14 that comes into contact with the bearing arm portion 2a is provided on the intermediate connecting plate 7.

[0012]

The biaxial hinge is used as a pivot hinge, and is symmetrically attached to the upper and lower portions of the door 3. Door 3
Is in the fully closed position, the rotating blade 4 is disposed parallel to the fixed blade 2 as shown in FIG.
And the intermediate connecting plate 7 are located closest to the fixed-side blade 2. The arc-shaped convex edge surface portion 10 of the fixed-side vane plate 2 is
Are engaged with the arcuate concave edge surface portion 9 of the rotary shaft 6.
It is impossible to rotate the rotation-side wing plate 4 in the opening direction with respect to the intermediate connecting plate 7 around the center.

Therefore, when the door 3 is pulled forward for the opening operation, the intermediate connecting plate 7 and the rotary blade 4 are integrally rotated about the fixed pivot 5 in the opening direction with respect to the fixed blade 2. . During this rotation, the arcuate concave edge surface portion 9 of the rotating blade 4 rotates relatively along the arcuate convex edge surface 10 of the fixed blade 2. As shown in FIG. 1, when the opening is rotated to 90 degrees, the first stop wall portion 12 of the intermediate connecting plate 7 comes into contact with the bearing arm 2 a of the fixed-side blade 2. At this stage, since the arc-shaped convex edge surface portion 10 of the fixed-side vane plate 2 is separated from the arc-shaped concave edge surface portion 9 of the rotating-side vane plate 4, the rotation of the intermediate connecting plate 7 performed by the fixed-side vane plate 2 is performed. The rotation constraint of the moving blade 4 is released.

Then, when the door 3 is further pulled, the rotating blade 4 rotates about the rotating pivot 6 in the opening direction with respect to the intermediate connecting plate 7. In the course of this rotation, the arc-shaped convex edge 8 of the rotating blade 4 partially enters the arc-shaped concave edge 11 of the fixed blade 2, so that the intermediate connecting plate 7 moves in the closing direction around the fixed pivot 5. It is restrained from rotating.

When the door 3 is further moved in the opening direction, FIG.
As shown in FIG. 0, the arc-shaped convex edge portion 8 of the rotating blade 4 is engaged with the entire arc-shaped concave edge portion 11 of the fixed blade 2, and the mounting plate portion 4b of the rotating blade 4 is connected to the intermediate connecting plate. 7 second stop wall 1
3 at this time, the door 3 is open to the maximum angle of 180 degrees.

When the door 3 is pulled in the closing direction from the fully opened position, first, the turning blade 4 rotates in the closing direction about the turning pivot 6 with respect to the intermediate connecting plate 7, and the turning blade is rotated. 4 is the edge of the fixed-side blade 2 and the upper concave edge 11
Escape sequentially from When rotated to 90 degrees in the closing direction, the arc-shaped convex edge 8 of the rotating blade 4 completely escapes from the arc-shaped concave edge 11 of the fixed blade 2, so that the intermediate connecting plate 7 with respect to the fixed blade 2. Is released.

After the bearing arm 4a of the rotating blade 4 closed and rotated in this manner comes into contact with one side surface 14a of the third stop wall portion 14 of the intermediate connecting plate 7, the intermediate connecting plate 7 and the rotating blade are rotated. The plate 4 integrally rotates about the fixed pivot 5 in the closing direction.

In the course of this rotation, the arc-shaped convex edge 10 of the fixed-side vane 2 enters the arc-shaped concave edge 9 of the rotary-side vane 4 and the door 3 is fully closed as shown in FIG. The other side surface 14b of the third stop wall portion 14 of the intermediate connecting plate 7 engages with the bearing arm portion 2a of the fixed-side blade plate 2.

[0019]

In the illustrated embodiment, the fixed-side vane plate 2 has a mounting plate portion 2b vertically connected to the base end of a horizontally arranged bearing arm portion 2a, and is fixed to the mounting plate portion 2b. Frame 1
A fixing hole 15 is provided. The rotation-side wing plate 4 has a mounting plate 4b vertically connected to the base end of a horizontally arranged bearing arm 4a, and the mounting plate 4b has a fixed frame 1 attached thereto.
A fixing hole 16 is provided. The arc-shaped convex surface portion 10 of the fixed-side blade 2 and the arc-shaped convex surface portion 8 of the rotating-side blade 4 have the same diameter.

[0020]

As described above, in the biaxial hinge of the present invention,
In accordance with the rotational position of the intermediate connecting plate 7 and the rotating side blade 4 with respect to the fixed side blade 2, the arc-shaped convex edge portion 10 of the fixed side blade 2 engages with and disengages from the arc-shaped concave edge portion 9 of the rotating side blade 4. Since the arc-shaped convex edge 8 of the rotating blade 4 is disengaged from the arc-shaped concave edge 11 of the fixed blade 2, the intermediate connecting plate 7 is restrained by the rotating blade 4 or the fixed blade 2. The rotation of the intermediate connecting plate 7 with respect to the fixed side blade 2 and the rotation of the rotating side blade 4 with respect to the intermediate connecting plate 7 are performed in the correct order, so that the collision between the fixed frame 1 and the door 3 can be properly prevented.

In the biaxial hinge of the present invention, the arc-shaped convex edge surface and the arc-shaped concave edge surface of the fixed-side blade and the rotating-side blade are engaged and disengaged from each other, so that the fixed-side blade is fixed. There is no need to separately insert a locking member such as a lock lever between the rotary blade and the rotating blade, so that the structure is greatly simplified, and the cost of the manufacturing process can be reduced. Because it does not use a spring, it is excellent in operation stability and durability.

[Brief description of the drawings]

FIG. 1 is a plan view of a biaxial hinge according to an embodiment of the present invention in a 90-degree opened state.

FIG. 2 is a front view of the biaxial hinge in a 90-degree opened state.

FIG. 3 is a bottom view of the biaxial hinge in a 90-degree opened state.

FIG. 4 is a left side view of the biaxial hinge in a 90-degree opened state.

FIG. 5 is a right side view of the biaxial hinge in a 90-degree opened state.

FIG. 6 is a rear view of the biaxial hinge in a 90-degree opened state.

FIG. 7 is a sectional view taken along line AA of FIG. 1;

FIG. 8 is a sectional view taken along line BB of FIG. 1;

FIG. 9 is a plan view of the biaxial hinge in a fully closed state.

FIG. 10 is a plan view of the biaxial hinge in a 180-degree opened state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fixed frame 2 Fixed-side blade 2a Bearing arm of fixed-side blade 2b Mounting plate of fixed-side blade 3 Door 4 Rotation-side blade 4a Bearing arm of rotation-side blade 4b Mounting plate of rotation-side blade 5 Fixed-side pivot 6 Rotating-side pivot 7 Intermediate connecting plate 8 Arc-shaped convex surface of rotating-side blade 9 Arc-shaped concave surface of rotating-side blade 10 Arc-shaped convex surface of fixed-side blade 11 Circle of fixed-side blade Arc-shaped concave edge portion 12 First stop wall portion of intermediate connecting plate 13 Second stop wall portion of intermediate connecting plate 14 Third stop wall portion of intermediate connecting plate 15 Fixing hole of fixed side blade 16 Fixing hole of rotating side blade

Claims (1)

(57) [Claims] A fixed-side vane plate fixed to a fixed frame body.
And a rotating blade 4 fixed to the door 3, an intermediate member connected to the fixed blade 2 by a fixed pivot 5 on one side and connected to the rotating blade 4 by a rotating shaft 6 on the other side. An arc-shaped convex surface portion 8 including a communication plate 7 and centered on the rotation-side pivot 6
And an arcuate concave edge 9 intersecting with the arcuate convex edge 8
The arc-shaped convex edge 10 centered on the fixed-side pivot 5 and the arc-shaped concave edge 11 intersecting with the arc-shaped convex edge 10 are provided on the bearing arm 4a of the rotary blade 4 at intervals of 0 degrees. The fixed-side blade 2 is provided on the bearing arm 2a of the fixed-side blade 2 at an interval of degrees, and the arc-shaped convex edge 10 of the fixed-side blade 2 and the arc-shaped concave edge 9 of the turning-side blade 4 have the same diameter. The arc-shaped convex edge 8 and the arc-shaped concave edge 11 of the fixed-side blade 2 have the same diameter, and the arc-shaped convex edge 10 of the fixed-side blade 2 engages with the arc-shaped concave edge 9 of the rotating-side blade 4. The fixed-side pivot 5 and the pivot-side pivot 6 are arranged so that the arc-shaped convex edge 8 of the pivot-side vane 4 engages with the arc-shaped concave edge 11 of the fixed-side vane 2. Is rotated by 90 degrees in the opening direction with respect to the fixed-side blade 2, the first stop wall 12 abutting on the bearing arm 2 a of the fixed-side blade 2 is moved to the intermediate connecting plate. The second stop wall portion 13 with which the mounting plate portion 4b of the rotating side blade 4 abuts when the rotating side blade 4 rotates 90 degrees in the opening direction with respect to the intermediate connecting plate 7 is attached to the intermediate connecting plate 7. When the rotating blade 4 is rotated 90 degrees in the closing direction with respect to the intermediate connecting plate 7, the bearing arm 4 a of the rotating blade 4 abuts on one side surface 14 a and the intermediate connecting plate 7 is fixed. A biaxial hinge having a third stop wall portion (14) provided on the intermediate connecting plate (7), the other side surface (14b) abutting against the bearing arm portion (2a) of the fixed-side vane plate (2) when rotated 90 degrees in the closing direction with respect to (2).