JPH11107619A - Spring-urged hinge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a function that urges a turning body to an opening position and holds the turning body at the opened position, and to reduce the number of component parts and production cost. SOLUTION: A shaft support cylinder is inserted into a bearing cylinder 4 of a fixed-side flap 2 and a bearing cylinder 5 of a turning-side flap 3, and a main body part of a torsion spring 7 is inserted into the shaft support cylinder. While a bent leg part 8 at one side of the torsion spring 7 is engaged with a turning body 11, a bent leg part 9 at the other side is engaged with a fixed frame body 12, and the turning body 11 is urged by the torsion spring 7 toward a position whereat the turning body is opened against the fixed frame body 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spring-loaded hinge used to drive a rotating body such as a lid or a door to an open position and hold the hinge at a predetermined open position.

[0002]

2. Description of the Related Art A conventional general hinge has only a function of rotatably supporting a rotating body with respect to a fixed frame body, and drives the rotating body to an open position or moves the rotating body to a predetermined open position. Since it does not have the function of holding, it was necessary to separately use a spring stay or the like to add these functions. For this reason, the number of components of metal fittings to be mounted on the rotating body and the fixed frame body is increased, the overall manufacturing cost is increased, and an extra mounting space is required.

[0003]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a function of biasing and holding a rotating body to an open position, so that it is not necessary to additionally use a metal fitting such as a spring stay, and the like, and a component An object of the present invention is to provide a spring-loaded hinge capable of reducing the number of components and manufacturing cost.

[0004]

The spring-loaded hinge according to the present invention includes a fixed blade 12 fixed to a fixed frame 12 and a rotating body 11. Rotating blades 3 that are fixed to the shaft member, a support cylinder 6 inserted into the bearing cylinder 4 of the fixed blade 3 and a bearing cylinder 5 of the rotation blade 3, and a main body part is inserted through the support cylinder 6. The torsion spring 7 engages the rotating body 11 with one bent leg portion 8 and engages the fixed frame 12 with the other bent leg portion 9 to bias the rotating body 11 in the opening direction. Consists of

[0005] When the constraint of the rotating body 8 on the fixed frame body 12 by the appropriate locking means is released, the rotating body 11 is springed up about the spindle cylinder 6 of the hinge 1 by urging of the torsion spring 7, and the predetermined rotation is performed. Automatically rotates to the open position. When the rotation of the rotating body 11 is appropriately stopped at the open position, the torsion spring 7 holds the rotating body 11 in a stopped state.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the illustrated embodiment, a spindle tube 6 for connecting a fixed blade 2 and a rotating blade 3 so as to be rotatable relative to each other.
Is provided with a retaining flange 10 on the outer periphery of the intermediate portion. The flange 10 comes into contact with each end face of the bearing cylinder 4 of the fixed-side blade 2 and the bearing cylinder 5 of the rotation-side blade 3, so that the shaft cylinder 6 is formed.
Is prevented, and the fixed-side blade 2 and the rotating-side blade 3 are held in an assembled state. Two hinges 1 are mounted on the left and right.
The fixed-side vane plate 2 is fixed to the inner surface 16 at the base end portion of the fixed frame 12 by known means such as spot welding or screwing. The rotating blade 3 is fixed to the rear end of the rotating body 11 by known means such as spot welding or screwing.

The pair of left and right bent leg portions 8 and 9 of the torsion spring 7 are bent at 90 degrees to the main portion.
When no load is applied, the bent leg portions 8 and 9 are 9 when viewed from the side.
They are arranged at 0 degree intervals. An oblique bending end 8a is formed at the tip of one bent leg portion 8, and abuts on the back surface of the rotating body 11 at a refraction point with the bending portion 8a. A right-angled bent end 9 a is formed at the tip of the other bent leg portion 9, and the bent end 9 a is formed on the inner surface 1 of the side wall of the fixed frame 12.
3 is inserted into a receiving hole 14 provided in the apparatus 3. The main parts of the two left and right torsion springs 7 are a rotating body 11 and a fixed frame 1.
They are arranged near the joint of two and intersect each other at an intermediate point C.

To stop the rotation of the rotating body 11 at a predetermined angle, two left and right stopper wires 15, 15 are attached between the rotating body 11 and the fixed frame 12. By adjusting the length of the wire 15, the fixed frame 1
The maximum opening angle of the rotating body 11 with respect to 2 can be changed.

[0009]

As described above, in the spring-loaded hinge of the present invention, the torsion spring 7 is attached to the support cylinder 6 inserted in the bearing cylinder 4 of the fixed-side blade 3 and the bearing cylinder 5 of the rotation-side blade 3. And one bent leg portion 8 of the torsion spring 7 is engaged with the rotating body 11, and the other bent leg portion 9 is fixed to the fixed frame 12.
The rotating body 11 is securely biased in the opening direction by the torsion spring 7 and is accurately held at a predetermined opening position, so that a biasing holding bracket such as a spring stay is provided. It is not necessary to separately install the metal parts, and the number of components of the metal fittings can be reduced, thereby reducing the overall manufacturing cost.

As described above, the main portion of the torsion spring 7 is inserted through the inside of the support cylinder 6, and the rotating body 11 and the fixed frame 12
Are arranged in the vicinity of the joints, so that an extra mounting space is not required unlike a conventional spring stay, and the inner space of the rotating body 11 and the fixed frame body 12 can be simplified and finished in an orderly manner. .

[Brief description of the drawings]

FIG. 1 is a perspective view showing a use state of a spring-loaded hinge according to one embodiment of the present invention, in which a rotating body is in an open position.

FIG. 2 is a partially cutaway front view of the spring-loaded hinge.

FIG. 3 is a left side view of a spring-biased hinge in a rotating body opened state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hinge 2 Fixed-side blade 3 Rotation-side blade 4 Bearing cylinder part of fixed-side blade 5 Bearing cylinder of rotation-side blade 6 Support cylinder 7 Torsion spring 8 One bending leg part of torsion spring 9 T- One bent leg portion of the spring 10 Reference retaining flange 11 of the spindle cylinder 11 Rotating body 12 Fixed frame 13 Inner surface of the side wall of the fixed frame 14 Torsion spring fixing receiving hole 15 Wire for stopping the rotating body 16 Inner surface of end of fixed frame

Claims (1)

[Claims] A fixed-side vane plate fixed to a fixed frame body.
A rotating side blade 3 fixed to the rotating body 11, a spindle tube 6 inserted into the bearing tube 4 of the fixed side blade 3 and a bearing tube 5 of the rotating side blade 3, The bent leg portion 8 is inserted into the shaft cylinder 6, and one bent leg portion 8 is engaged with the rotating body 11, and the other bent leg portion 9 is engaged with the fixed frame body 12, and urges the rotating body 11 in the opening direction. A spring biased hinge comprising a torsion spring 7.