JP2683717B2 - Hinge with automatic turning function in the closing direction - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hinge having an automatic turning function in a closing direction.

[0002]

2. Description of the Related Art Conventionally, various hinges having a function of automatically rotating in a closing direction have been known. However, these conventional hinges have a large number of parts and have a complicated structure, so that they have an expensive defect. Therefore, there is a demand for the development of a hinge having a small number of parts, a simple structure, and an inexpensive automatic pivoting function in the closing direction that can be provided.

[0003]

A problem to be solved is that a hinge having a function of automatically rotating in a known direction in the related art has a large number of parts and a complicated structure, which is expensive. .

[0004]

According to the present invention, a pair of wing pieces having a plurality of shaft insertion portions formed at predetermined intervals in the axial direction and concentric with each other in the axial direction are provided. In a hinge having a shaft insertion portion of a wing piece and a support shaft inserted so as to be rotatable relative to the shaft insertion portion of the other wing piece, a coil spring inserts the support shaft into the support shaft. It is sandwiched by a step formed on the shaft and one end face in the axial direction of a movable piece that is mounted so as to be capable of relative rotation about the axis and relative movement in the axial direction with respect to the support shaft at a position facing the step. , The extended end of the movable piece is in contact with the open side surface of one of the wing pieces, and the other axial end surface of the movable piece is in contact with the other end surface by the bias of the coil spring. Relative rotation in the opening direction of the pair of blades relative to the one axial end surface of the shaft insertion portion of the blade is used to rotate the movable piece. The coil spring is converted into an axial retreat motion and is pressed by the one end surface in the axial direction of the movable piece toward the step portion side to compress the same, and the extension of the coil spring due to the elastic return is reversed. Motion and an axial forward motion and a spiral shape for converting into a relative rotation in a closing direction of a pair of wing pieces, wherein the support shaft has a square head at the base end.
A male-type shaft comprising an external thread portion at the tip portion has a section, a proximal portion
And a female support shaft having a female head portion having a square head portion and screwed into the male screw portion of the male support shaft, and
The amount of screwing between the female screw portion and the male screw portion can be adjusted, and the tip end surface of the female spindle is made to function as the step portion, reducing the number of parts and simplifying the structure. The purpose of providing an inexpensive hinge has been achieved.

[0005]

According to the present invention, the door is opened with, for example, one blade attached to the door side and the other blade attached to the door frame side, and the pair of blades are rotated relative to each other in the opening direction. When the movement occurs, the other end of the movable piece in the axial direction and the one end surface of the other blade in the axial insertion portion of the other blade slide in the axial direction, so that the movable piece rotates about the axis of the support shaft. While moving, it is retracted in the axial direction, and the one end surface in the axial direction presses the coil spring toward the step side to compress it. If the opening force of the door is released in this state, the movable piece advances in the axial direction while rotating in the reverse direction due to the expansion due to the elastic return of the coil spring, and the spiral-shaped other axial end surface of the movable piece and the other blade. The spiral axial one end faces of the shaft insertion portions of the pieces slide in mutually opposite directions to cause a pair of blade pieces to relatively rotate in the closing direction, thereby automatically closing the door.

[0006]

An embodiment of the present invention will be described below with reference to the drawings. 1 is a front view showing an open state, FIG. 2 is a front view showing a closed state, and FIG. 3 is an exploded front view. In these figures, 1 is one wing piece and 2 is the other wing piece. Three
Is a support shaft, 4 is a coil spring, and 5 is a movable piece.

Shaft insertion portions 1A and 1B are formed at both axial end portions on the base end side of one blade piece 1, and the other blade piece 2 is formed.
In the vicinity of both axial end portions of the base end side of the shaft insertion portion 2
A and 2B are formed, and these shaft insertion portions 1A and 1B are formed.
B, 2A, and 2B are concentric with each other in the axial direction, and the support shaft 3 is inserted so as to be capable of relative rotation around the axis and incapable of relative movement in the axial direction.

The support shaft 3 is composed of a long male support shaft 30 and a short female support shaft 31. The male support shaft 30 has a square (eg hexagonal) head 30A at its base end. It has a male screw portion 30B at its tip. The female support shaft 31 has a rectangular (for example, hexagonal) head portion 31A at the base end portion, and is formed into a tubular shape having a female screw portion 31B which can be screwed into the male screw portion 30B. Therefore, the male screw portion 30B of the long male support shaft 30 and the female screw portion 31B of the short female support shaft 31 are screwed together to connect the both 30, 31, thereby making it possible to measure the axial dimension within a predetermined range. A series of support shafts 3 capable of adjusting expansion and contraction are formed, and the tip end surface of the female support shaft 31 functions as a step portion 31C.

The coil spring 4 is of a compression type and is attached to the support shaft 3 with the male support shaft 30 inserted therethrough. By this attachment, the lower end is supported by the step portion 31C and the movable piece 5 is attached to the upper end. Are in contact. That is, the movable piece 5 has the shaft insertion portion 5A on the base end side, and the shaft insertion portion 5A
Has a structure provided with an extending portion 5B extending from the wing piece 1 toward the open side surface 1a of the wing piece 1. Therefore, by inserting the male support shaft 30 into the shaft insertion portion 5A, the movable piece 5
Is attached to the support shaft 3 so as to be capable of relative rotation about the axis and relative movement in the axial direction, and the extension end 5b of the extension portion 5B is attached.
Comes into contact with the open side surface 1a of one of the wing pieces 1, and
The axial lower end surface 5D of the shaft insertion portion 5A is the coil spring 4
Is in contact with the upper end of the

On the other hand, the axial upper end surface 5C of the shaft insertion portion of the movable piece 5 and the shaft insertion portion 2A of the other blade piece 2 on which the upper end surface 5C abuts by the bias of the coil spring 4.
The lower end surface 2a in the axial direction of 5C is formed in a spiral shape that inclines to the right (or may incline to the left) in the drawing.
2a are in contact with each other. The inclination angle θ is set in the range of 35 degrees to 50 degrees (preferably 45 degrees). As a result, the upward movement (forward movement) in the axial direction of the movable piece 5 caused by the bias of the coil spring 4 is converted into the relative rotation of the pair of blade pieces 1 and 2 in the closing direction. As shown, the pair of wings 1, 2 are held closed. In the figure, 6, 6 ... are a plurality of mounting holes,
Reference numeral 7 indicates a regulation pin insertion hole.
As shown in FIG. 2, both wings 1, 2 are slightly rotated in the opening direction against the bias of the coil spring 4 to extend the regulation pin insertion hole 7 and the movable piece 5 formed in one of the wings 1. Output 5B
After communicating with the regulation pin insertion hole 7 formed in the above, by inserting the regulation pin 8 into the regulation pin insertion holes 7 and 7, the movement of the movable piece 5 in the axial direction is regulated, so that both wing pieces 1 are formed.
It is devised to suppress the rotation of 2 in the closing direction to facilitate the attachment work on the door side and the door frame side when attaching the hinge.

With such a construction, for example, one wing piece 1 is attached to the door 9 side shown by the two-dot chain line in FIG. 5, and the other wing piece 2 is attached to the door frame 10 side shown by the two-dot chain line. After that, the regulation pin 8 is pulled out. As a result, the bias of the coil spring 4 holds the pair of blades 1 and 2 and the door 9 in a closed state as shown in FIG.
In this state, when the door 9 is opened as indicated by the one-dot chain line or the two-dot chain line, relative rotation in the opening direction occurs between the pair of blade pieces 1 and 2, and the spiral upper end surface 5C of the movable piece 5 is The spiral axial lower end surfaces 2a of the shaft insertion portions 2A of the other wing piece 2 slide with each other to lower (retract) in the axial direction while rotating the movable piece 5, and the shaft of the shaft insertion portion 5A. The coil spring 4 is pressed and compressed by the lower end surface 5D in the direction. When the opening force of the door 9 is released at the open position indicated by the one-dot chain line or the two-dot chain line, the movable piece 5 is raised in the axial direction (advanced) while being reversely rotated by the extension due to the elastic return of the coil spring 4. , The axial upper end surface 5C of the movable piece 5 and the axial lower end surface 2a of the shaft insertion portion 2A of the other blade piece 2 slide in mutually opposite directions, and the pair of blade pieces 1 and 2 are closed relative to each other. The door 9 is rotated to automatically close the door 9 to the position shown by the solid line.

According to the present invention, a spindle 3 composed of a long male spindle 30 and a short female spindle 31 and a coil spring 4 are provided.
Since the movable piece 5 and the movable piece 5 are configured so as to ensure an automatic turning function in the closing direction, compared with a hinge having an automatic turning function in the closing direction known in the related art, Since the number of parts is small and the structure is simple, it can be provided at low cost. Moreover, the torque in the closing direction can be adjusted by adjusting the tilt angle θ. That is, a large closing direction torque is obtained by increasing the inclination angle θ, and a small closing direction torque is obtained by decreasing the inclination angle θ. Further, the torque in the closing direction can be adjusted by using the coil springs 4 having different spring constants. That is, the coil spring 4 having a large spring constant
A large closing direction torque is obtained by using, and a small closing direction torque is obtained by using the coil spring 4 having a small spring constant. Furthermore, when the coil spring 4 having a predetermined spring constant is in use, the female screw portion 31 of the short female support shaft 31 is used.
It is also possible to adjust the torque in the closing direction by adjusting the screwing amount of B with the male screw portion 30B of the long male support shaft 30. Specifically, by increasing the screwing amount,
A large closing direction torque can be obtained by reducing the distance between the step portion 31C and the axial lower end surface of the shaft insertion portion 5A of the movable piece 5 and increasing the compression amount of the coil spring 4.
By reducing the screwing amount to increase the distance between the stepped portion 31C and the axial lower end surface of the shaft insertion portion 5A of the movable piece 5 and reducing the compression amount of the coil spring 4, a small torque in the closing direction can be obtained. can get.

[0013]

As described above, according to the present invention, the support shaft, the coil spring and the movable piece are provided at three points so that the automatic turning function in the closing direction can be ensured. As compared with a hinge that has a function of automatically rotating in the conventionally known closing direction, the number of parts is small and the structure is simple, so that it can be provided at a low cost. In addition,
According to Ming, the male thread of the male spindle and the female thread of the female spindle are
By adjusting the screwing amount of
It can also be adjusted.

[Brief description of the drawings]

FIG. 1 is a front view showing an open state of an embodiment of the present invention.

FIG. 2 is a front view showing a closed state.

FIG. 3 is an exploded front view.

FIG. 4 is a plan view showing a fully closed state of a pair of blades.

FIG. 5 is a plan view showing a state before use.

FIG. 6 is a plan view showing an operation during use.

[Explanation of symbols]

1 One blade piece 1A Shaft insertion portion 1B Shaft insertion portion 1a Open side surface 2 Other blade piece 2A Shaft insertion portion 2B Shaft insertion portion 2a Shaft insertion portion 2A lower end surface (one end surface) 3 Spindle shaft 4 Coil spring 5 Movable piece 5C Axial upper end surface (other end surface) of the movable piece 5D Axial lower end surface (one end surface) 5b Movable piece extension end 30 Male support shaft 30B Male screw part 31 Female support shaft 31B Female screw part 31C Support shaft step

Claims (1)

(57) [Claims] 1. A pair of blades having a plurality of shaft insertion portions formed at predetermined intervals in the axial direction, and a shaft insertion portion of one blade piece that is concentric with the axial displacement. In a hinge provided with a support shaft that is inserted relatively rotatably around the shaft with respect to the shaft insertion part of the other wing piece, a coil spring inserts the support shaft and forms a step on the support shaft. The extension end of the movable piece is sandwiched between one end face in the axial direction of the movable piece that is mounted so as to be capable of relative rotation about the axis and relative movement in the axial direction with respect to the support shaft at a position facing the step portion. Is in contact with the open side surface of one of the wing pieces, and the other axial end surface of the movable piece,
The other end surface and one end surface in the axial direction of the shaft insertion portion of the other wing piece, which comes into contact with the urging force of the coil spring, are relatively rotated in the opening direction of the pair of wing pieces by rotating the movable piece and the shaft. Direction retreat movement, the one end face of the movable piece in the axial direction presses the coil spring toward the step portion and compresses it, and the extension due to the elastic return of the coil spring reversely rotates. And an axial forward motion and a spiral shape that converts into a relative rotation in the closing direction of a pair of winglets,
The support shaft has a square head at the base end and a male screw portion at the tip end , and a male shaft having a square head at the base end and is screwed to the male screw portion of the male support shaft. A female support shaft having a female screw portion formed therein, and the amount of screwing of the female screw portion and the male screw portion can be adjusted, and the tip end surface of the female support shaft functions as the stepped portion. A hinge with an automatic turning function in the closing direction, which is characterized by being.