JP2628141B2 - 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 fix 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 in a predetermined order through the intermediation of the lock lever. An object of the present invention is to provide a biaxial hinge having improved operation stability and durability because a collision between a frame and a door is prevented and a spring is not used as a biasing means of a lock lever.

[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. An intermediate connecting plate 7 connected to the fixed-side blade 2 at one side by a fixed-side pivot 5 and connected to the rotary-side blade 4 at another side by a fixed-side pivot 6; A lock lever 9 connected to the intermediate connecting plate 7 by a pivot portion 8;

An arc-shaped convex surface portion 10 centered on the pivot shaft 6 and a long linear edge surface 11 intersecting the end of the arc-shaped convex surface portion 10 are provided on the bearing arm portion 4a of the rotating blade member 4. ,
An arc-shaped convex surface 13 centered on the fixed-side pivot 5, a long straight-line edge 14 intersecting the end of the arc-shaped convex surface 13, and a short straight-line edge intersecting the end of the long linear edge 14. The surface portion 12 is provided on the bearing arm portion 2 a of the fixed-side blade 2.

In the fully closed position, the long linear edge 1 engages with the long linear edge 11 of the rotary blade 4 in a relatively non-rotatable manner.
5 is formed to have the same diameter as the arc-shaped convex edge portion 10 of the rotating blade 6 so as to intersect with the end of the long linear edge portion 15 and to have the arc-shaped convex edge portion 10 of the rotating blade 6 in the fully open position. A first short arcuate concave edge portion 16 which is rotatably engaged with the lock lever 9 is provided on one side surface portion of the lock lever 9.

In the fully opened position, the first short linear edge 17 is engaged with the long linear edge 14 of the fixed blade 2 in a relatively non-rotatable manner, and intersects the end of the first short linear edge 17. The fixed-side blade 2 is formed to have the same diameter as the arc-shaped convex edge portion 13,
A second short arcuate concave edge portion 18 rotatably engaged with the arcuate convex edge portion 13 of the fixed-side vane plate 2 when fully closed, and formed so as to intersect the end of the second short arcuate concave edge portion 18. Then, a second short linear edge portion 19 which is non-rotatably engaged with the short linear edge portion 12 of the fixed-side blade 2 at the fully open position is provided on the other side surface portion of the lock lever 9.

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 20 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
A second stop wall portion 21 is provided on the intermediate connecting plate 7 with which the mounting plate portion 4b of the rotation-side wing plate 4 abuts when rotated by 0 degrees.

When the rotating blade 4 is rotated 90 degrees in the closing direction with respect to the intermediate connecting plate 7, the receiving portion 24 of the bearing arm 4a of the rotating blade 4 is engaged with one side surface, and When the connecting plate 7 rotates 90 degrees in the closing direction with respect to the fixed-side blade 2, the receiving portion 2 of the bearing arm portion 2 a of the fixed-side blade 2 on the other side surface.
The lock lever 9 is provided with a stop projection 22 with which the lock lever 3 engages.

The respective edge portions of the lock lever 9 are changed according to the rotational positions of the intermediate connecting plate 7 and the rotating side blade 4 with respect to the fixed side blade 2. And the intermediate connecting plate 7 is restrained by the rotating blade 4 or the fixed blade 2.

[0015]

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. In addition, the long straight edge portion 15 of the lock lever 9 engages with the long straight edge portion 11 of the rotating blade 4, and the second short arc-shaped concave edge portion 18 of the lock lever 9 is formed in the circle of the fixed blade 2. It is engaged with the arc-shaped convex edge portion 13. Therefore, the rotation side pivot 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.

When the door 3 is pulled forward to open the door, the intermediate connecting plate 7 rotates integrally with the rotating blade 4 in the opening direction with respect to the fixed blade 2 about the fixed pivot 5. During this rotation, the second short arcuate concave edge portion 18 of the lock lever 9 is rotated.
Rotates relatively along the arc-shaped convex edge portion 13 of the fixed-side blade 2. When rotated to 90 degrees as shown in FIG. 10, the first stop wall 20 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 second short arc-shaped concave edge portion 18 of the lock lever 9 is separated from the arc-shaped convex edge portion 13 of the fixed-side blade 2, the rotation-side blade 4 with respect to the intermediate connecting plate 7 by the lock lever 9. Has been released.

Then, when the door 3 is further pulled, only the rotating blade 4 rotates in the opening direction about the rotating pivot 6, and in the process, the long linear edge 11 of the rotating blade 4 is locked by the lock lever. 9
The locking lever 9 rotates about the middle pivot 8 to push the long straight edge 15. By this rotation, the long straight edge portion 15 of the lock lever 9 is separated from the long straight edge portion 11 of the turning blade 4, and the first short arc-shaped concave edge portion 16 of the lock lever 9 is turned to the turning blade plate 16. 4 arc-shaped convex edge portion 1
0 is engaged, and the first short straight edge portion 17 of the lock lever 9 is engaged.
And the second short linear edge 19 abut on the long linear edge 14 and the short linear edge 12, respectively, of the fixed blade 2, so that the intermediate connecting plate 7 rotates in the closing direction about the fixed pivot 5. I am bound to be impossible.

When the door 3 is further moved in the opening direction in this state, the arc-shaped convex edge portion 10 of the rotating blade 4 relatively rotates along the first short arc-shaped concave edge portion 16 of the lock lever 9,
As shown in FIG. 11, when the door 3 is opened up to the maximum angle of 180 degrees, the mounting plate portion 4 b of the rotating blade 4 comes into contact with the second stop wall portion 21 of the intermediate connecting plate 7.

When the door 3 is pulled in the closing direction from the fully opened position, only the turning blade 4 rotates in the closing direction about the turning pivot 6, and the arc-shaped convex edge 10 of the turning blade 4 is moved. The lock lever 9 relatively rotates along the first short arcuate concave edge portion 16. In the course of this rotation, when the arc-shaped convex edge portion 10 of the rotating blade 4 is separated from the first short arc-shaped concave edge portion 16 of the lock lever 9, the rotation of the intermediate connecting plate 7 with respect to the fixed-side blade 2 by the lock lever 9. The restraint is released.

Therefore, the door 3 is fixed to the fixed frame 1 by 90 degrees.
And the receiving portion 24 of the bearing arm 4a of the rotating blade 4 is locked to the lock lever 9 as shown in FIG.
After contacting one side surface of the stop projection 22, the intermediate connecting plate 7 and the rotating blade 4 are integrally rotated about the fixed pivot 5 in the closing direction. In the course of this rotation, the first short straight edge portion 17 of the lock lever 9 is moved to the fixed blade 2.
Of the lock lever 9
Is rotated, and the long straight edge portion 15 of the lock lever 9 engages with the long straight edge portion 11 of the rotating blade 4.

When the door 3 is further pushed to the fully closed position, the long linear edge 15 of the lock lever 9 engages with the long linear edge 11 of the rotary blade 4 as shown in FIG. The second short arcuate concave surface 18 of the lever 9 is engaged with the arcuate convex surface 13 of the fixed-side blade 2, and the stop projection 2 of the lock lever 9 is engaged.
2 engages with the receiving portion 23 of the fixed-side blade 2.

[0022]

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 25 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 26 is provided. The lock lever 9 is made of a plate material that is thicker than the bearing arm 2a and the bearing arm 4a.
a, 4a are arranged on the same plane. Lock lever 9
Is formed of a circular washer fitted on the intermediate pivot 8.

[0023]

As described above, in the biaxial hinge of the present invention,
The arc-shaped convex edge portion 10 of the bearing arm portion 4a of the rotating blade 4
And the long straight edge 11, the short straight edge 12, the arc-shaped convex edge 13, and the long straight edge 14 of the bearing arm 2 a of the fixed-side blade 2, the intermediate connecting plate 7 with respect to the fixed-side blade 2. And the long straight edge 15 of the lock lever 9 and the first short arcuate concave edge 1 in accordance with the rotational position of the rotary blade 4.
6, first short straight edge portion 17, second short arcuate concave edge portion 1
8 and the second short straight edge portion 19, the intermediate connecting plate 7 is restrained by the rotating blade 4 or the fixed blade 2, so that the rotation of the intermediate connecting plate 7 with respect to the fixed blade 2 The rotation of the turning-side vane plate 4 with respect to the intermediate connecting plate 7 is performed in a predetermined order, so that the collision between the fixed frame 1 and the door 3 can be accurately prevented.

Further, in the biaxial hinge of the present invention, the lock lever 9 is driven by being pushed by the long straight edge portion 14 of the fixed blade 2 and the long straight edge portion 11 of the rotating blade 4. Since no spring is used as the driving means, the operation stability and durability are remarkably improved.

[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 at a 90-degree open position.

FIG. 11 is a plan view of the biaxial hinge in a 180-degree opened state.

FIG. 12 is a plan view showing a state where the biaxial hinge has returned to a 90-degree open position.

FIG. 13 is an enlarged plan view of a lock lever of the biaxial hinge.

[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 Rotation-side pivot 7 Intermediate connecting plate 8 Intermediate-portion pivot 9 Lock lever 10 Arc-shaped convex edge of rotation-side blade 11 Long linear edge of rotation-side blade 12 Short linear edge of fixed-side blade Surface portion 13 Arc-shaped convex edge portion of fixed-side blade 14 Long linear edge portion of fixed-side blade 15 Long linear edge portion of lock lever 16 First short arc-shaped concave edge of lock lever 17 First short straight line of lock lever Shaped edge portion 18 Second short arcuate concave edge surface portion of lock lever 19 Second short linear edge surface portion of lock lever 20 First stop wall portion of intermediate connecting plate 21 Second stop wall portion of intermediate connecting plate 22 Lock lever Stop projection 23 Fixed side wing plate Receiving 24 rotation-side blade receiving portions 25 fixed side blade fixing hole of the fixing hole 26 rotating side blade plate

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. Contact plate 7
And a lock lever 9 connected to the intermediate connecting plate 7 by an intermediate portion pivot 8, and intersects an arc-shaped convex edge portion 10 centered on the pivot shaft 6 and an end of the arc-shaped convex edge portion 10. A long linear edge 11 is provided on the bearing arm 4 a of the rotating blade 4, and has an arc-shaped convex edge 13 centered on the fixed-side pivot 5 and a long linear intersecting end of the arc-shaped convex edge 13. An edge surface portion 14 and a short straight edge portion 12 intersecting the end of the long straight edge portion 14 are provided on the bearing arm portion 2a of the fixed-side blade 2, and the long straight edge portion of the rotating blade 4 in the fully closed position. A long linear edge surface portion 15 which is engaged with the motor 11 in a relatively non-rotatable manner;
Intersecting with the end of the long linear edge 15, it is formed to have the same diameter as the arc-shaped convex edge 10 of the rotating blade 6, and rotates relative to the arc-shaped convex edge 10 of the rotating blade 6 in the fully open position. A first short arcuate concave edge portion 16 which engages as possible is provided on one side surface portion of the lock lever 9, and the first short arcuate concave edge portion 16 which engages with the long straight edge surface portion 14 of the fixed-side blade 2 in the fully open position so as to be relatively non-rotatable. The first short linear edge 17 and the arc-shaped convex edge 13 of the fixed blade 2 intersecting the end of the first short linear edge 17 have the same diameter. A second short arcuate concave edge portion 18 rotatably engaged with the arcuate convex edge portion 13;
The short straight edge portion 1 of the fixed-side blade 2 is formed so as to intersect with the end of the second short arcuate concave edge portion 18 at the fully open position.
2 is provided on the other side surface of the lock lever 9 with a second short linear edge surface portion 19 which is engaged with the relative non-rotatable, and the intermediate connecting plate 7 is rotated by 90 degrees in the opening direction with respect to the fixed side blade plate 2. At this time, when the first stop wall portion 20 abutting on the bearing arm portion 2a of the fixed-side blade 2 is provided on the intermediate connecting plate 7, and when the turning-side blade 4 rotates 90 degrees in the opening direction with respect to the intermediate connecting plate 7, The intermediate connecting plate 7 is provided with a second stop wall 21 with which the mounting plate portion 4b of the rotating blade 4 abuts, and when the rotating blade 4 is rotated 90 degrees in the closing direction with respect to the intermediate connecting plate 7, the rotation is stopped. When the receiving portion 24 of the bearing arm portion 4a of the moving-side blade 4 engages with one side surface and the intermediate connecting plate 7 rotates 90 degrees in the closing direction with respect to the fixed-side blade 2, the fixed-side blade 2 The lock lever 9 is provided with a stop projection 22 with which the receiving portion 23 of the bearing arm 2a is engaged. Intermediate connecting plate 7 and the rotation-side blade plate 4 to
In accordance with the rotational position of the lock lever 9, the respective edge portions of the lock lever 9 are disengaged from the respective edge portions of the fixed-side blade 2 and the rotation-side blade 4, and the intermediate connecting plate 7 is rotated with the rotation-side blade 4 or the fixed-side blade. Biaxial hinge that is restricted to 2.