JP2682719B2 - Hinge - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Field of Industrial Application) The present invention relates to a hinge used for connecting an opening and closing body such as a door to a fixed body such as a furniture body in a rotatable and openable manner. In particular, the present invention relates to a catch mechanism for holding a second fixed base body fixed to an opening / closing body in a closed state with respect to a first fixed base body fixed to a fixed body at an X-link hinge.

(Prior art) When you want to be able to open the door to the furniture body such as a chest up to 180 °, open the door on the furniture body.
Coupling is performed by using an X-link hinge as described in 60-80275. The X-link hinge includes a first fixed base fixed to a fixed body such as a furniture body and a second fixed base fixed to an opening / closing body such as a door.
It is connected so as to be rotatable and openable via a link arm of a book. These link arms include a first link arm whose one end side is axially attached to one end side of a first fixed base body, and one end side is axially attached to the other end side of this first link arm and the other end side is a second end. A second link arm pivotally mounted on one end side of the fixed base body, and a second link arm pivotally mounted on the other end side of the first fixed base body at one end side and at an intermediate portion to an intermediate portion of the second link arm. A third link arm and a fourth link arm whose one end is pivotally attached to the other end of the third link arm and the other end is pivotally attached to the other end of the second fixed base. When opening the body, the opening and closing body is moved away from the furniture body, and the body can be opened up to 180 degrees.

Then, in this type of hinge, a catch mechanism for holding the second fixed base body in the closed state with respect to the first fixed base body is provided. In the conventional catch mechanism, for example, as described in the above-mentioned publication, an integral leaf spring is installed between shaft fixing portions of the third link arm to the first fixed base body and the fourth link arm. The cam receiving portion formed at the middle portion of the leaf spring is slidably pressed against the cam portion formed at the other end portion of the second link arm. Then, by biasing the second link arm with respect to the third link arm in the direction in which these link arms are folded, the second fixed base body is held in a closed state with respect to the first fixed base body. Is.

(Problem to be Solved by the Invention) However, in the above-described conventional structure, the leaf spring is installed between both ends of the third link arm, and the relatively long integral leaf spring is used. As the body is repeatedly opened and closed, the leaf spring is easily fatigued, and the elasticity of the leaf spring is weakened, so that the function of the catch mechanism tends to be uncertain.

The present invention is intended to solve such a problem, and provides an X-link hinge provided with a catch mechanism which is highly durable, has a high function, and is not easily deteriorated in function even if it is repeatedly used. That is the purpose.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention provides a first fixed base 11 fixed to a fixed body 1 such as a furniture body and the fixed body 1. A second fixed base 12 fixed to the opening / closing body 2 such as a door that is opened and closed, and a first link arm 13 having one end rotatably supported on one end of the first fixed base 11.
And a second link arm having one end rotatably supported on the other end of the first link arm 13 and rotatably supported on the other end by one end of the second fixed base 12. 14 and
A third link arm 15 whose one end side is rotatably supported on the other end side of the first fixed base 11 and whose middle portion is rotatably supported on the middle portion of the second link arm 14; A fourth link arm 16 having one end rotatably supported on the other end of the third link arm 15 and the other end rotatably supported on the other end of the second fixed base 12. , The link arms 14 and 15 are urged to move the second fixed base 12 to the first position.
And a catch mechanism 17 that holds the fixed base 11 at least in a closed state, the catch mechanism 17 is provided in the vicinity of a support portion of the third link arm 15 to the second link arm 14. The cam 51 provided on the second link arm 14 and the other end of the first fixed base 11 or one end of the third link arm 15 are rotatably supported at one end. A spring receiver 61 whose side is slidably contacted with the cam 51, and the third link arm
The third link arm is attached to the other end side of 15 and has one end side.
15 and the other end is the spring receiving body.
A torsion spring 71 is slidably abutted against the spring 61 to press the spring receiver 61 against the cam 51.

(Operation) In the hinge of the present invention, when the opening / closing body 2 such as a door rotatably and rotatably connected to the fixed body 1 such as a furniture body by the hinge is opened while being rotated, the first link arm 13
With respect to the first fixed base 11 fixed to the fixed body 1, the first fixed base 11 is rotated in a direction from one end side to the other end side, and accordingly, the second link arm 14 is While relatively rotating with respect to the first link arm 13, it moves toward the other end side of the first fixed base 11. At the same time, the third link arm 15 rotates in the direction from the one end side to the other end side of the first fixed base 11 with respect to the first fixed base 11, and the fourth link arm 16 is provided. Rotates in a direction in which an angle formed with the third link arm 15 with respect to the third link arm 15 opens. As a result, the second fixed base 11 fixed to the opening / closing body 2 rotates away from the first fixed base 11 while relatively rotating with respect to the second link arm 14 and the fourth link arm 16. Open while
At the same time, the opening / closing body 2 opens while separating from the fixed body 1. Further, when the opening / closing body 2 is closed while rotating, the link arms 13, 14, 15, 16 and the second fixed base 12 move in reverse. When the opening / closing body 2 is closed, the other end of the torsion spring 71 is brought into contact with the other end of the third link arm 15 by the biasing force of the torsion spring 71 that is pivotally attached to the other end of the third link arm 15. The spring receiver 61, which is rotatably supported on the other end side of the fixed base 11, is pressed against the cam 51 near the support portion of the third link arm 15 in the second link arm 14. As a result, the third link arm 15 and the second link arm 14 are urged toward each other in a direction in which the angles of the link arms 14 and 15 are closed, and the second fixed base 12 is fixed to the first fixed base 11. Is held closed against. When the opening / closing body 2 is opened / closed, the spring receiver 61 is attached to the first fixed base 11.
While rotating, the torsion spring 71 and the cam 51 slide on the spring receiver 61.

(Embodiment) An embodiment of the hinge of the present invention will be described below with reference to the drawings.

Reference numeral 1 is a furniture body such as a chest as a fixed body, and 2 is a door as an opening / closing body for opening and closing a front opening of the furniture body 1.

The X-link hinge that connects the door 2 to the furniture body 1 in a rotatable and openable manner is provided with a first fixed base 11 fixed to a side surface inside the furniture body 1 and one side of the back surface of the door 2. The second fixed base 12 to be fixed, and both fixed bases 11 and 12
Link arms 13,14,1 that connect the
5,16 and the link arm 14,1
5 is urged to move the second fixed base 12 to the first fixed base 11
Catch mechanism that keeps closed and fully open state
17 are provided. In the following description, the upper side in the drawings in FIGS. 1 to 3 is the upper side.

The first fixed base 11 made of a metal plate or the like has a substantially U-shaped cross section, and is fixed to the furniture main body 1 via an adjustment plate 21 and a base plate 22. That is, a base plate 22 is fixed to the furniture main body 1 with tapping screws (not shown), and the adjustment plate 21 is fitted on the base plate 22 by a fixing pin 23, a fixing lever 24, and the like so as to be detachable with one touch. It is fixed. And the adjustment plate
The first fixed base body 11 has a fixing screw 25 and an adjusting screw 26 on it.
It is fitted and fixed so that the angle can be adjusted. A cover 27 that covers the fixing lever 24 is mounted on the rear portion of the first fixed base 11.

The second fixed base 12 made of metal or the like is used for the door 2
Mounting pieces 32 are formed on both sides of the opening of the cup portion 31 to be embedded therein, and these mounting pieces 32 are joined and fixed to the back surface of the door 2 by tapping screws (not shown).

One end of the first link arm 13 made of a metal plate or the like is rotatably supported by a support shaft pin 36 on the upper rear end side of the first fixed base 11.

The second link arm 14 made of a metal plate or the like has a substantially U-shaped cross section and has a width to be fitted into the first fixed base 11. The upper rear end of the second link arm 14 is rotatably supported by the spindle pin 37 at the other end of the first link arm 13. The front portion of the second link arm 14 is substantially U-shaped when viewed from the side, but the front end portion of the second link arm 14 has one end inside the cup portion 31 of the second fixed base 12. Spindle pin on the side
It is rotatably supported by 38.

The third link arm 15 made of a metal plate has a substantially U-shaped cross section, and has a width to be fitted in the second link arm 14. Then, one end of the third link arm 15 is rotatably supported by a spindle pin 39 at the front end of the first fixed base 11. Also, the second
The intermediate portion of the third link arm 15 is rotatably supported by the spindle pin 40 at the intermediate portion of the link arm 14 in the front-rear direction. A restriction step 41 is formed on both sides of the one end of the third link arm 15.

The fourth link arm 16 made of a metal plate or the like has a substantially U-shaped cross section, and the third link arm 15
It has a width that fits inside. Then, one end of the fourth link arm 16 is rotatably supported by the support shaft pin 42 on the other end of the third link arm 15. Also,
The other end of the fourth link arm 16 is rotatably supported on the other end of the cup portion 31 of the second fixed base 12 by a spindle pin 43. In addition, on both sides of the intermediate portion of the fourth link arm 16, there are formed restricting step portions 44 that come into contact with the opening edge of the cup portion 31 when the second fixed base 12 is fully opened.

The axis of rotation permitted by each of the support shaft pins 36, ..., 40, 42, 43 is the left-right direction. The spindle pins 36, ..., 40, 42, 43 are prevented from coming off by caulking.

Next, the catch mechanism 17 will be described in detail.

A cam 51 made of synthetic resin or the like is fixed to the upper middle portion of the second link arm 14. The support shaft pin 40 supporting the third link arm 15 on the second link arm 14 is passed through the cam 51. At the same time, dowels formed on both inner side surfaces of the second link arm 12 in the recesses 52 formed on both sides of the rear portion of the cam 51.
53 is engaged. As a result, the cam 51 is fixedly supported by the second link arm 12. The front end surface of the cam 51 has a cam surface convex toward the front.
54 are formed.

Further, one end of a spring receiver 61 made of a metal plate or the like is rotatably supported on the support shaft pin 39 supporting the third link arm 15 on the first fixed base 11.
The other end of the spring receiver 61 slidably abutted on the cam surface 54 of the cam 51 has a zigzag shape in a side view, and the first end protrudes away from the cam surface 54. The bent portion 62, the second bent portion 63 protruding in the opposite direction to the bent portion 62, and the third bent portion 64 protruding in the same direction as the first bent portion 62.

Further, a torsion spring 71 made of metal or the like is pivotally attached to the other end side of the third link arm 15 by a spindle pin 72. This torsion spring 71
One end is in contact with the third link arm 15, and the other end is slidably in contact with the other end of the spring receiving body 62, that is, the front end from the side opposite to the cam 51. As a result, the spring receiver 61 is pressed against the cam 51.

Then, when the door 2 is opened while being rotated, the first link arm 13 rotates forward with respect to the first fixed base body 11, that is, in the clockwise direction in FIGS. 1 to 3.
As a result, the second link arm 14 moves forward while rotating relative to the first link arm 13. At the same time, the third link arm 15 rotates forward with respect to the first fixed base body 11, that is, in the clockwise direction. Further, the fourth link arm 16 is relatively counterclockwise with respect to the third link arm 15, that is, the third link arm 15.
The link arm 15 rotates in an opening direction. As is clear from the above description, when the door 2 opens, the second link arm 14 and the third link arm 14 connected in the X shape are connected.
The angle formed with the link arm 15 of is opened.

As a result, the second fixed base 12 rotates while relatively rotating with respect to the second link arm 14 and the fourth link arm 16, and opens while being separated from the first fixed base 11. In this way, the door 2 opens while separating from the furniture body 1. In the fully open state shown in FIG. 3, the third
The regulation step portion 41 of the link arm 15 is brought into contact with the lower surface of the cam 51, and the regulation step portion 44 of the fourth link arm 16 is brought into contact with the opening edge of the cup portion 31 of the second fixed base 12. It As a result, the rotation of the second fixed base 12 is restricted in the opening direction. After all, the door 2 can be opened to an angle close to 180 ° with respect to the furniture body 1, for example up to about 170 °.

Further, when the door 2 is closed while being rotated, the link arms 13, 14, 15, 16 and the second fixed base 12 move in reverse. FIG. 1 shows a state in which the door 2 is closed. In this state, the rotation of the second fixed base body 12 is restricted in the closing direction by the contact of the door 2 with the front surface of the furniture body 1.

It should be noted that FIG. 2 shows the door 2 in the middle between the closed state and the fully opened state.
Shows a state of being opened about 90 °.

When the door 2 is opened and closed, the spring receiver 61 slightly rotates with respect to the first fixed base body 11, and the torsion spring 71 moves against the spring receiver 61.
Although the cam 51 slides, when the door 2 is opened to the fully opened state, the cam surface 54 of the cam 51 relatively climbs over the second bent portion 63 of the spring receiver 61, and the door 2 is fully opened. In this state, the position between the first bent portion 62 and the second bent portion 63 of the spring receiver 61 contacts the cam surface 54 of the cam 51 from the lower front side. This allows the torsion spring
The cam 51 is pressed in the counterclockwise direction about the support shaft pin 40 via the spring receiver 61 biased by 71. Therefore, due to the reaction, the second link arm
The third link arm 15 is biased clockwise with respect to 14. That is, the third link arm 15 and the second link arm 14 are urged to each other in a direction in which the angles of the link arms 14 and 15 open. As a result, the second fixed base 12 is held in a fully opened state with respect to the first fixed base 11.

On the other hand, when the door 2 is closed, the cam surface 54 of the cam 51 relatively moves over the second bent portion 63 of the spring receiver 61 downward, and when the door 2 is closed as shown in FIG. Second bent portion 63 and third bent portion of the receiving body 61
The position between 64 is brought into contact with the cam surface 54 of the cam 51 from the front upper side. As a result, the cam 51 is supported by the torsion pin 71 via the spring receiving body 61 urged by the torsion spring 71.
It is pressed clockwise around 40. Therefore, due to the reaction, the third link arm 14
The link arm 15 is urged counterclockwise. That is, the third link arm 15 and the second link arm 14 are urged to each other in a direction in which the angles of the link arms 14 and 15 are closed. As a result, the second fixed substrate 12 is
The fixed base 11 is held in a closed state.

According to the above configuration, unlike the conventional case, an integral leaf spring erected between both end portions of the third link arm is not brought into contact with the cam portion of the second link arm, but rather the torsion spring 71 and the first spring. Since the spring receiver 61 is interposed between the cam 51 of the second link arm 14, the durability of the catch mechanism 71 is improved, and the reliability is improved. That is, since the short torsion spring 71 is used as the urging means instead of the long leaf spring, the spring 71 is less likely to fatigue even if it is used, that is, when the door 2 is repeatedly opened and closed, and the elasticity of the spring 71 is not weakened. rare. Of course, the spring receiver 61, which is not required to have elasticity, may be a rigid body and have high strength. Therefore, the function of the catch mechanism 17 is kept long and reliable,
The door 2 can be reliably held in the fully open state and the closed state.

At the same time, the lever principle can appropriately increase the force with which the torsion spring 71 presses the cam 51 via the spring receiving body 61, so that the door 2 can be more reliably held in the fully open state and the closed state. You can

In the above-mentioned embodiment, the cam 51 is connected to the second link arm.
Although it is separate from 14, the cam can be formed integrally with this second link arm. However, depending on the shape of the cam surface 54 and the like, it is advantageous in manufacturing that the cam 51 is a separate body as in the above embodiment.

〔The invention's effect〕

According to the present invention, in the X-link hinge in which the second fixed base body is connected to the first fixed base body by the four link arms so as to be rotatable and openable, the second and third links connected in an X shape. A catch mechanism for urging the arm to hold the second fixed base body at least in a closed state with respect to the first fixed base body uses a spring for pressing a cam provided on the second link arm as a torsion spring. Since a spring receiving body extending from one end side of the third link arm is interposed between the cam and the torsion spring provided on the other end side of the third link arm, even if the use is overlapped, the torsion is applied. Since the spring is less prone to fatigue, the function of the catch mechanism is less likely to deteriorate, and it can be held in the closed state for a long time and reliably, improving durability and reliability. To above.

[Brief description of the drawings]

The drawings show one embodiment of the hinge of the present invention. FIG. 1 is a sectional view in a closed state, FIG. 2 is a sectional view in an intermediate state between a closed state and a fully opened state, and FIG. 3 is a fully opened state. A side view and FIG. 4 are plan views. DESCRIPTION OF SYMBOLS 1 ... Furniture main body as a fixed body, 2 ... Door as an opening / closing body, 11 ... First fixed base body, 12 ... Second fixed base body, 13
...... First link arm, 14 ...... Second link arm,
15 ... Third link arm, 16 ... Fourth link arm, 17 ... Catch mechanism, 51 ... Cam, 61 ... Spring receiver, 71 ... Torsion spring.

Claims (1)

(57) [Claims] 1. A first fixed base body fixed to a fixed body, a second fixed base body fixed to an opening / closing body opened and closed with respect to the fixed body, and one end side of the first fixed base body. A first link arm whose one end side is rotatably supported, and one end side which is rotatably supported at the other end side of the first link arm and whose other end side is rotated to one end side of the second fixed base body. A second link arm that is movably supported, and one end side of which is rotatably supported on the other end side of the first fixed base body, and an intermediate portion of which is rotatably attached to an intermediate portion of the second link arm. A supported third link arm, and one end side is rotatably supported on the other end side of the third link arm and the other end side is rotatably supported on the other end side of the second fixed base body. The fourth link arm and the second link base body to the first link by first biasing the link arm. A catch mechanism for holding at least a closed state with respect to a body, wherein the catch mechanism is located in the vicinity of a support portion of the third link arm for the second link arm, and A spring receiver whose one end is rotatably supported by the provided cam and the other end of the first fixed base body or one end of the third link arm, and the other end is slidably abutted on the cam. Body and the other end side of the third link arm, one end side of which is abutted on the third link arm and the other end side of which is slidably abutted on the spring receiving body. A hinge having a torsion spring for pressing a body against the cam.