JP5034034B2 - Flip-up sunglasses - Google Patents

Description

The present invention relates to the shape of sunglasses used for preventing eye strain.

Conventional sunglasses equipped with a flip-up mechanism using a coil spring use the restoring force of the coil spring to hold the rotating operation unit.
Japanese Patent Publication No. 11-264958

However, according to the above technique, a considerable number of fine parts had to be used to realize the flip-up mechanism, and the cost increased accordingly.
In view of this, an object of the present invention is to devise how to use the coil spring of the rotation operation unit to provide high-quality and inexpensive flip-up type sunglasses.

In order to solve the above problems, the present invention provides a spectacle frame with lens flip-up mechanism for supporting freely springing up the lens with respect to the frame body, a rotation shaft, wherein the lens is attached, the frame A rotation operation holding portion provided in the main body and rotatably supporting the rotation operation shaft, and an inclined portion formed on the rotation operation holding portion for bending the elastic member by contacting both ends of the elastic member has the door, the rotation shaft is inserted through the elastic member, by the frictional resistance due to contact with the elastic member in a state in which deflected, constitute the lens to stop at an arbitrary flip-up position is there.
The elastic member may be a plastic material such as a shape memory resin, or a metal coil spring.

According to the present invention, since the rotational movement axis of the movable lens is held by the frictional force with the coil spring, the position of the lens can be arbitrarily adjusted.

One embodiment of the present invention is shown in FIG.
The rotation operation unit includes a coil spring 3, a rotation operation shaft 2, and a rotation operation holding unit 1. A slant portion 4 is integrally provided inside the rotation operation holding portion 1 in order to bend the coil spring. The rotational motion shaft 2 is held by a coil spring 3 bent in an arc shape by the slant portion 4.

"Effect of the embodiment"
According to this embodiment, since the coil spring is used as the elastic material, even if wear occurs in the member contact portion, the contact portion between the members changes depending on the degree of wear due to the internal stress of the coil spring. The movement of the movable lens portion is less likely to occur. Further, since the frictional force is used, the movable frame is always held at an arbitrary position, so that the usability is improved.

"Other embodiments"
In the embodiment of FIG. 2, a metal coil spring is used as the elastic material. However, in another embodiment, a plastic material such as a shape memory resin may be used.

It is a front view which shows one Embodiment of this invention. It is an enlarged front view of the present invention.

Explanation of symbols

1 rotation operation holding part 2 rotation operation shaft 3 coil spring 4 slant (inclination part)

Claims (2)

In a spectacle frame equipped with a lens flip-up mechanism that supports the lens to be flipped up with respect to the frame body,
A rotational motion axis to which the lens is attached ;
A rotation operation holding portion provided on the frame body and rotatably supporting the rotation operation shaft;
Formed in the rotational movement holding portion, and having an inclined portion for bending the elastic member by contacting both ends of the elastic member,
It said rotation shaft is inserted through the elastic member, by the frictional resistance due to contact with the elastic member in a state where flexed, stopping the lens at an arbitrary flip-up position,
An eyeglass frame equipped with a lens flip-up mechanism characterized by the above. The spectacle frame provided with the lens flip-up mechanism according to claim 1, wherein the elastic member is a coil spring.

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