JPH0337358Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Field of Industrial Application) The present invention relates to a hinge, and particularly to a hinge used for a door of furniture or the like.

(Prior Art) Conventionally, this type of hinge has been described, for example, in Japanese Patent Application Laid-Open No. 180781/1981,
A base body attached to the main body side of furniture etc. and a rotating body attached to the door side of furniture etc. are connected in a rotatable first link arm and a second link arm so as to be rotatable and openable, and the first link An engaging pin is provided at the proximal end portion of the arm protruding toward the rotating body side, and a lock arm having a cam surface that engages with the engaging pin is provided on a support shaft provided at an upper portion of the base near the rotating body side. A coil spring is rotatably supported and supported on a mounting shaft located inward from the support shaft and provided on the upper part of the base body, and one end of the coil spring is biased and engaged with the lock arm; A structure is known in which the other end is locked to the locking shaft.

(Problem to be solved by the invention) In the structure described in the above publication, the lock arm having a cam surface that engages with the engagement pin of the first link arm and the coil spring that biases this lock arm are independent of each other. Because they are supported in parallel by separate support shafts and mounting shafts, the structure is complicated due to the large number of parts, and the overall form is large. In addition, since the lock arm has a cam surface with a displacement point, the shape is complicated and the displacement point is easily damaged when the rotating body is opened and closed. There is a problem in that it is difficult to open and close smoothly.

The present invention attempts to solve these problems, and has a small number of parts, a simple structure, a smaller overall form, smooth opening and closing of the rotating body, and high durability. Its purpose is to provide a hinge.

[Structure of the idea]

(Means for solving the problem) The hinge of the present invention has a base body attached to the main body side, a rotating body attached to the door side, and both ends of the hinge are rotatably attached to the base body and the rotating body. A first link arm on the outside and a second link arm on the inside are provided, in which a rotating body is connected to the base body so as to be rotatably openable and closable, and a protruding portion is provided at the end of the second link arm on the side of the base body. formed, and the above-mentioned substrate has a
A support shaft is provided at the base end on the rotating body side, and
A locking shaft is provided at a lower portion near the support shaft, and a U-shaped push frame having an engagement plate that constantly engages with the protrusion of the second link arm is rotatably supported on the support shaft; A coil spring is supported on the support shaft, one end of the coil spring is biased and locked to the engagement plate of the push frame, and the other end is locked to the locking shaft.

(Function) The hinge of the present invention has a protrusion 1 formed on the second link arm 4 that connects the base 1 and the rotating body 2.
9 and a coil spring 21 that presses the protrusion 19 supported on the support shaft 20 provided on the base body 1 and urges the second link arm 4, and is rotatably supported on the support shaft 20. By urging the engagement plate 23 with the coil spring 21 through the engagement plate 23 of the pushed frame 22, the protrusion 19 is pushed as the second link arm 4 rotates. It rotates against the coil spring 21 through the rotation of the engagement plate 23 of the frame 22, so that the rotating body 2 is smoothly rotated open and closed.
At this time, the engagement plate 23 of the push frame 22 that rotates around the common support shaft 20 with the coil spring 21 prevents the protrusion 19 from being worn out by the coil spring 21 .

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

In this hinge, a base 1 and a rotating body 2 are rotatably connected by a rotatable first link arm 3 and a second link arm 4, and the base 1 is connected to a main body 5 of furniture or the like. In addition to being attached via a fixture 6, the rotating body 2 is attached to a door 7 side of furniture or the like, so that the door 7 can be opened and closed from the main body 5.

The base 1 is integrally formed of a metal material or the like,
The base portion 11 and the connecting portion 12 which is substantially orthogonal to the rotating body 2 side of the base portion 11 form a substantially L-shape in side surface and a substantially U-shape in cross section.

The rotating body 2 is integrally formed of a metal material or the like, and has a recess 13 with one side open, and plate-shaped mounting parts 14 protruding from both sides of the opening side of the recess 13. . The rotating body 2 is embedded in a door 7 of furniture or the like, and is attached to the door 7 by joining a mounting portion 14 to the door 7.

The first link arm 3 is integrally formed of a metal plate or the like, and its base end is rotatably attached to the distal end of the connecting portion 12 of the base body 1 by a shaft 15, and its distal end is rotatably mounted in the recess 13 of the rotating body 2 by a shaft 16.

Further, the second link arm 4 is formed of a metal plate or the like, and its base end is rotatably attached to the center of the connecting portion 12 of the base 1 by a shaft 17, and its distal end is rotatably mounted in the recess 13 of the rotary body 2 by a shaft 18. Further, a protrusion 19 having a substantially V-shaped side surface is bent at the base end of the second link arm 4, that is, the end on the base body 1 side.

A support shaft 20 is provided at the base end of the connecting portion 12 of the base body 1.
is provided, and a coil spring 2 is attached to this support shaft 20.
1 and a push frame 22 are rotatably supported.
The push frame 22 is formed from a metal plate or the like into a substantially U-shape from the front, and an engagement plate 23 is formed in the center thereof, and this engagement plate 23 is connected to the protrusion 19 of the second link arm 4. and coil spring 21
It is biased and clamped by one end of the . Further, the other end of the coil spring 21 is locked to a locking shaft 24 provided at a lower portion of the support shaft 20 of the base body 1 near the rotating body 2 side.

The mounting tool 6 is attached to a main body 5 such as furniture with wood screws 25, and the base 1 is attached to the mounting tool 6.
It is attached by a pair of screws 26 and 27.

Then, when the door 7 of furniture or the like is opened and closed, the rotating body 2 rotates to open and close with respect to the base 1, but when the door 7 is closed, the outer surface of the first link arm 3 becomes the rotating body. While contacting the bottom surface of the recess 13 of No. 2,
The outer surface of the second link arm 4 comes into contact with the shaft 16, and the coil spring 21
By pressing the protruding portion 19 of the second link arm 4 through the rotary body 2, the rotating body 2 is held in the closed state.

Furthermore, when the door 7 is opened, the inner surface of the first link arm 3 comes into contact with the outer surface of the second link arm 4, and the coil spring 21 pushes the engagement plate 23 of the push frame 22. The rotating body 2 is held in the open state by pressing the protrusion 19 from the side.

Along with such opening/closing operations of the rotating body 2, the second
As the link arm 4 is rotated, its protrusion 19 slides on and rotates on the engagement plate 23 of the pushing frame 22, which is rotated against the coil spring 21, but the coil spring 21 has high rigidity. does not touch the protrusion 19 directly, so the protrusion 19 has a local
For example, groove-like wear does not occur.

[Effect of idea]

According to the present invention, since the pushing frame and the coil spring that bias and support the protrusion of the second link arm are supported by a common support shaft, the pushing frame and the coil spring are each mounted on separate support shafts. The number of parts is smaller than that of a type supported by a cam, and the engagement plate of the push frame is engaged with the protrusion, so the structure is simpler than a type that engages a complex-shaped cam, and the overall structure is simple. The form can be reduced in size, the rotating body can be smoothly opened and closed, and a highly durable hinge can be provided at a low cost.

[Brief explanation of drawings]

FIG. 1 is a longitudinal side view of the hinge in the closed state, showing an embodiment of the hinge of the present invention, FIG. 2 is a longitudinal side view of the hinge in the open state, FIG. 3 is a plan view of the hinge in the closed state, and FIG. It is a front view of a moving frame. DESCRIPTION OF SYMBOLS 1... Base body, 2... Rotating body, 3... First link arm, 4... Second link arm, 19...
Projection part, 20... Support shaft supporting the coil spring and push frame, 21. Coil spring, 22. Push frame, 23...
...Engagement plate, 24...Latching shaft.

Claims (1)

[Claims for Utility Model Registration] A base body attached to the main body side, a rotating body attached to the door side, both ends of which are pivotably attached to the base body and the rotating body, and the rotating body is rotated with respect to the base body. A first link arm on the outside and a second link arm on the inside are connected so as to be movably openable and closable, and a protrusion is formed at the end of the second link arm on the side of the base body, and the base body includes: A support shaft is provided at the base end on the side of the rotating body, a locking shaft is provided near the bottom of the support shaft, and the support shaft has an engagement plate that constantly engages with the protrusion of the second link arm. A U-shaped push frame is rotatably supported, a coil spring is supported on the support shaft, one end of the coil spring is biased and locked to the engagement plate of the push frame, and the other end is A hinge characterized in that a portion of the hinge is locked to the locking shaft.