JPS628027Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a frame for glasses that lifts the lenses upward when the glasses are worn on the face.

Conventionally, with this type of eyeglass frame, the lenses could only be held either approximately parallel to the face or with the bottom edge raised about 90 degrees from the face, and in between, the lenses would sag due to their weight. Only those that have become similar to this are commercially available.

This invention provides an eyeglass frame that allows lenses to be positioned at any angle.

An embodiment of the present invention shown in FIGS. 1 and 2 will be described. Reference numeral 1 denotes a face-locking part of the eyeglass frame, and 2 a lens-holding part. The lens-holding part 2 is connected to the face-locking part 1 by a hinge 8. Both ends of the hinge 8 are brazed to the face-locking part 1, and the center is brazed to the central part 2a of the lens holding part 2.
The lens holding part 2 is designed to be able to rotate like a door relative to the face locking part 1.

As shown in exploded view in FIG. 2, the hinge 8 consists of a central bearing 3, two bearings 4 at both ends, a cylinder 5 made of a spring material serving as a shaft, and plugs 7 at both ends. The inner diameters of the central bearing 3 and both end bearings 4 are equal, and the combined length of the central bearing 3 and both end bearings 4 is equal to the combined length of the plug 7 and the cylinder 5. The outer diameter of the cylinder 5 is made larger than the inner diameter of the central bearing 3 in the free state, and there is a cut 6 extending over the entire length in the axial direction.
has. Then, this cylinder 5 is compressed in the diametrical direction to reduce the gap between the cuts 6 and reduce the diameter.
On the outer periphery of the cylinder 5, center the central bearing 3 in the center, fit the both end bearings 4 into both ends, and further fit the plugs 7 into the ends of the left and right end bearings 4 to form a hinge 8. The end of the bearing 4 is brazed to the face locking part 1, and the central bearing 3 and a part 2a of the lens holding part 2 are brazed.

The cylinder 5 inserted into the center bearing 3 and both end bearings 4 is pressed against the inner surfaces of these bearings 3 and 4 by its own elasticity, and the lens holding part 2 is rotated about the cylinder 5 with respect to the face locking part 1. When moving, frictional resistance is generated, and the lens holding part 2 can be stopped at any rotational position relative to the face locking part 1.

In order for the entire outer periphery of the cylinder 5 to be in contact with the inner surface of the bearings 3 and 4 when inserted into the bearings 3 and 4, the cylinder 5 must be made so that its cross section is as perfect a circle as possible when inserted into the bearings 3 and 4. It is desirable to make

Although the cuts 6 in the cylinder 5 shown in FIG. 2 are bent in a wave-like manner, they may be straight as shown in FIG. 3, or may be formed in a spiral shape with a large pitch.

As shown in FIG. 2, if the cuts 6 are made wavy and the edges of the cuts 6 are formed in an alternately indented manner, the cross section of the cylinder 5 becomes continuous in the circumferential direction when viewed from the axial direction, and the cuts 6 It is possible to make the distribution of the pressure contact force on the inner surfaces of the bearings 3 and 4 uniform in the portion.

In the above embodiment, the cylinder 5 is not fixed to either the bearings 3 or 4. Face locking part 1 as shown
Since the total length of both end bearings 4 fixed to the center bearing 3 is longer than that of the center bearing 3, the relative frictional force between the cylinder 5 and both end bearings 4 is greater than the relative frictional force between the center bearing 3 and the cylinder 5. Superior. For this reason, the cylinder 5 and both end bearings 4 rarely rotate relative to each other, and the cylinder 5 and the center bearing 3 mainly rotate relative to each other.Although the rotation can be made light, when the lens is lifted up, It becomes easier to fall. To prevent this, it is preferable to relatively fix the central bearing 3 and the cylinder 5 with a pin inserted diametrically. Also, make the total length of the bearing fixed to the lens holding part 2 equal to the total length of the bearing fixed to the face locking part 1, or make the total length of the bearing fixed to the lens holding part equal to the total length of the bearing fixed to the face locking part. It may be made longer and provided so as not to rotate relative to the bearing that fixes the cylinder 5 to the face locking part 1.

[Brief explanation of the drawing]

1 is a perspective view of an embodiment of the eyeglass frame according to the present invention, FIG. 2 is an exploded perspective view of the hinge portion of FIG. 1, and FIG. 3 is a perspective view of another embodiment of the cylinder 5 of FIG. 2. be. 1...Face locking part, 2...Lens holding part, 3...
...Central bearing, 4...Both end bearings, 5...Cylinder, 6...
…cut, 7…stop, 8…hinge.

Claims (1)

[Scope of utility model registration request] The face-locking part and the lens-holding part are connected by a hinge so that the lens-holding part rotates upward relative to the face-locking part, and a cylinder made of a spring material having a cut extending over the entire length in the axial direction is placed in a free state in the eyeglass frame. An eyeglass frame characterized in that the gap between the cuts is shortened to further reduce the diameter and the frame is inserted as a shaft into a bearing of a hinge.