JPS63593B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention enables non-linear characteristics to be exhibited in the reaction force of a spring with respect to the opening/closing moment curve of the opening/closing object when opening/closing an opening/closing object having a horizontal rotation axis.
This invention relates to a hinge whose opening/closing force can be set arbitrarily.

Conventionally, there are hinges that have non-linear characteristics due to the combination of compression springs and cams, but there are no hinges that have non-linear characteristics using torsion springs (torsion bars, torsion springs, spiral springs, etc.). A method that covers the operating force is common.

However, in the above-mentioned method, the hinge uses the reaction force of the spring used for rotation in response to rotation operation.
There was a problem that balance characteristics, upward movement, and downward movement characteristics could not be obtained, and the mechanism could not move beyond a single point weight reduction mechanism.

This invention has been made in view of the above-mentioned circumstances, and uses a rotating spring such as a torsion bar, torsion spring, or spiral spring to exhibit nonlinear characteristics, and to enable the opening/closing operation force to be set arbitrarily. This provides a hinge with a

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 shows an embodiment according to the present invention, in which a torsion spring is used, a front view, and Fig. 2 a side view thereof.
3 to 6 are explanatory diagrams showing the operating state of the embodiment according to the present invention. In the figure, reference numeral 1 is a rotating shaft provided horizontally with one end fixed to main body A, and reference numeral 2 is a fixed plate fixed to main body A. 3
is a movable plate, which is rotatably supported on the rotating shaft 1 via a spacer 4 between it and the fixed plate 2, and furthermore, an operating lever 6 is rotatably supported on the rotating shaft 1 via a spacer 5 on the outside thereof. supported. Further, a torsion spring 7 is fitted onto the rotating shaft 1, and one end of the torsion spring 7 is connected to a pin 8 fixed to the operating lever 6.
At the same time, the other end is inserted and locked into a hole provided at the other end of the rotating shaft. The torsion spring 7 is installed with an initial torque applied thereto.

On the other hand, a bearing plate 9 is fixed to the movable plate 3, and a guide groove 10 is formed in the fixed plate 2, and the same dogleg groove 1 is formed in the movable plate 3 and the bearing plate 9.
1 and 12 are formed.

Further, the operating lever 6 has a U-groove 13 formed at its tip on the side opposite to its shaft portion.

A guide roller 14 is slidably passed through the grooves 10, 11, 12, and 13, and E-links or the like are fitted to both ends of the guide roller 14 that protrude outward from the bearing plate 9 and the fixed plate 2. It is designed to prevent it from coming off in the axial direction.

The guide groove 10 of the fixed plate 2 is formed to be able to guide the guide roller 14 in the rotating direction of the movable plate 3. That is, the guide groove 10 is bored in a substantially diagonal direction so as to deviate from the circular orbit centered on the rotating shaft 1, and therefore, the guide groove 10 is guided by the guide roller 14 that moves to the movable plate 3. The characteristics of the applied reaction force of the torsion spring 7 are nonlinear characteristics that are approximately balanced with the rotational moment of the movable plate 3.

Further, one of the doglegged grooves 11 and 12 corresponds to one side of the doglegged shape, and guides the guide roller 14 so as to enable movement in the centrifugal direction and restrict movement along the guide groove 10. The other groove, which is formed to intersect with the groove 10 and corresponds to the other side of the dogleg shape, is bent above the one groove and substantially perpendicular to the one groove. Furthermore, the groove 13 is formed so that the guide roller 14 can move in the centrifugal direction.

In such a structure, when the movable plate 3 is rotated around the rotating shaft 1, the guide roller 14 is regulated by the dogleg grooves 11 and 12 formed in the movable plate 3 and the bearing plate 9, respectively, and the guide roller 14 moves toward the fixed plate 2. guide groove 10
move along. The movement of the guide roller 14 is accompanied by rotation of the operating lever 6 because the guide roller 14 is inserted into the U groove 13 of the operating lever 6. The operation lever 6 is rotated by a torsion spring 7 via a pin 8.
Tighten or untighten.

The reaction force of the torsion spring 7 acts on the operating lever 6 via the pin 8 and further acts on the movable plate 3 via the guide roller 14 located in the U-groove 13 of the operating lever 6.

Next, the operation of the hinge configured as described above will be explained. FIG. 3 shows, for example, a copying machine with the document holding cover open. In this state, the movable plate 3 corresponding to the holding cover is in an upright state and its rotational moment is 0, and the torsion spring 7 is Initial torque is applied and stably supported. At this time, the guide roller 14 abuts against the right end of the guide groove 10, and further movement in the right direction is restricted.

From this state, when a torque in the closing direction exceeding the above-mentioned initial torque is applied to the movable plate 3, the movable plate 3 is operated to close. As the movable plate 3 rotates, the rotational moment of the movable plate 3 gradually increases, and the torsion spring 7 is tightened by the driven operating lever 6, so that the reaction force of the spring 7 also gradually increases.

When the movable plate 3 is fully opened, the U groove 1 is opened as shown in Fig. 3.
A guide roller 14 located at the bottom of the groove 3 is in contact with the movable plate, and when the movable plate is closed, the guide roller 14 is bored into the guide groove 10 and the U groove and one of the grooves 11 and 12 are centrifugally moved. In FIG. 4, which shows the middle of the rotation of the movable plate 3, the guide roller 14 comes into contact with the movable plate 3 at a position where it has moved somewhat in the centrifugal direction from the bottom of the U-groove 13.

Furthermore, when the movable plate 3 is operated to close, the movable plate 3 and the operating lever 6 rotate in the same manner via the guide roller 14 until the guide roller 14 hits the left end of the guide groove 10.

Therefore, as shown in FIG. 5, the guide roller 1
4 hits the left end of the guide groove 10 and the fourth
It moves further in the centrifugal direction than in the figure and reaches the bending point of the doglegged grooves 11 and 12. During this time, the reaction force of the torsion spring 7 and the rotational moment of the movable plate 3 are substantially balanced, so that the movable plate 3 can be operated with a small external force, and the movable plate 3 can be stopped at an arbitrary position.

When the movable plate 3 is further closed from this state, only the movable plate 3 and the bearing plate 9 are closed while the operating lever 6 remains stationary, so the above-mentioned balanced state is canceled and the movable plate 3 falls due to its own weight. The fall of the movable plate 3 is guided by a guide roller 14 located in the other of the dogleg-shaped grooves 11 and 12, and as shown in FIG. 14 hits and stops (fully closed state).
In this state, if the movable plate 3 is a document holding lid of a copying machine, the document is sufficiently held down by the lid's own weight.

In addition, in the case of opening operation, do the following. first,
An external force in the opening direction is applied to the movable plate 3 in the fully closed state shown in FIG. 6 to lift the movable plate 3. This lifting requires a large external force, but after the guide roller 14 crosses the bending point of the doglegged grooves 11 and 12, the opening operation is performed by the reaction force of the torsion spring 7 and the rotational moment of the movable plate 3. The movable plate 3 can be operated within a balanced range and can be operated with a small external force, and the movable plate 3 can be stopped at any position.

As explained in detail above, the hinge according to the present invention is configured so that nonlinear characteristics can be arbitrarily set using a rotating spring such as a torsion bar, torsion spring, or spiral spring. If used as a hinge for a document holding lid, etc.
When opening and closing the lid, it is balanced in any range, and just before the lid is fully closed, it falls due to its own weight, producing a force to press the document, and so on, and any torque can be obtained.

In addition, it is small and compact, and arbitrary moment characteristics can be obtained by combining groove trajectories.
In particular, it is possible to reduce the spring reaction force to zero halfway.

[Brief explanation of the drawing]

FIG. 1 is a front view showing one embodiment of the present invention, FIG. 2 is a side view of FIG. 1, and FIGS.
The figure is an explanatory diagram of the operation of the embodiment according to the present invention. 1...shaft, 2...fixed plate, 3...movable plate, 4,
5... Spacer, 6... Operation lever, 7... Torsion spring, 9... Bearing plate, 10... Guide groove, 11, 12... Dogleg groove, 13... U groove, 14... Guide roller.

Claims (1)

[Scope of Claims] 1. A movable plate having a horizontal rotating shaft, a fixed plate fixedly attached to the rotating shaft, an operating lever rotatably attached to the rotating shaft, and one end attached to the operating lever. It consists of a torsion spring which is engaged and whose other end is appropriately fixed, and a guide roller which penetrates grooves formed in the movable plate, the fixed plate and the operating lever, and is mounted so as to be able to slide within the groove. The grooves in the movable plate and the operating lever are formed so that the guide roller can slide in the centrifugal direction, and the grooves in the fixed plate are formed so that the guide roller can be guided in the rotating direction of the movable plate, and A hinge characterized in that the above-mentioned grooves are combined so that the reaction force characteristics of a torsion spring applied to the movable plate have nonlinear characteristics with respect to the rotation of the movable plate.