JPH0525423U - Supporting device for auxiliary lenses for spectacles - Google Patents

Abstract

(57) [Abstract] [Purpose] To rotate the auxiliary lens by a simple mechanism so that the auxiliary lens can be stably supported in a use position or a non-use position. [Structure] A frame on the main body side and an auxiliary lens are rotatably connected by two hinges, a gear-shaped cam is fixed to one frame, and the other frame is elastically provided in a plurality of grooves of this cam. It is made to abut.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of a device that rotatably supports an auxiliary lens for glasses.

[0002]

[Prior Art]

 The applicant for utility model registration proposes to rotatably attach front sunglasses to the eyeglasses by the invention of Japanese Utility Model Publication No. 62-35058. The mounting mechanism uses a lever mechanism to make the sunglass lens rotatable, and requires two levers and a spring for urging these levers, which makes the structure complicated.

[0003]

[The purpose of the device]

 Therefore, it is an object of the present invention to perform positioning support when the auxiliary lens is rotated by a simple mechanism so that the auxiliary lens can be stably supported in a use position or a non-use position.

[0004]

[Means for solving the problem]

 To achieve the above object, the present invention rotatably connects a main body side frame and an auxiliary lens with two hinges, and fixes a gear-shaped cam to one of the frames. The other frame is elastically brought into contact with.

According to the above structure, when the auxiliary lens is rotated from the use position to the non-use position or vice versa, the other frame moves while elastically deforming from one groove to the other groove, By elastically fitting inside the groove, the auxiliary lens is stably supported at a predetermined position. In this structure, the elastic force of the frame itself is used, and the cam that abuts on the frame also has a simple structure. Therefore, it is possible to obtain a predetermined rotation operation and positioning function with a simple structure, and it is lightweight. Can be realized.

[0006]

【Example】

 1 and 2 show a supporting device 1 for an auxiliary lens for glasses of the present invention. In the supporting device 1 of this embodiment, in order to detachably attach the auxiliary lens 3 as a colored lens (sunglass) to the portion of the spectacles 2 for correcting vision, the frame 4 and the auxiliary lens 3 on the main body side are attached. A side frame 5 and a gear-shaped cam 7 are provided.

One of the two frames 4 and 5, for example, the frame 4 is made of an elastic material, and has hanging hooks 8 at the upper ends of both ends, and stop hooks 9 are formed at the lower ends of the ends. The hanging hook 8 and the stop hook 9 are detachably attached to the outer portion of the spectacles 2 by the elastic force of the frame 4 itself.

The frames 4 and 5 are rotatably connected to each other by two hinges 6 at their upper portions. In the case of this embodiment, the hinge 6 has a tubular shape and is fixed to the frame 4 by welding. The other frame 5 is drawn through the inside of this cylindrical hinge 6, and is attached to the auxiliary lens 3 by the fixing tools 10 at both tip portions.

The cam 7 is fixed between the two hinges 6, for example, in the frame 5 in a non-rotating state, and has six protrusions 71 and six protrusions 71 located between them, as an example, in the outer peripheral portion. A positioning groove 72 is formed.

As described above, the supporting device 1 pushes and expands the frame 4 and applies it to the spectacles 2. It is detachably attached to the 2. When the auxiliary lens 3 is in the use position, the corresponding groove 72 hits the frame 4 at that position. The frame 4 is elastically contacted with the groove 72 to stably maintain its position.

When the user of the spectacles 2 does not use the auxiliary lens 3, the auxiliary lens 3 in the use position is held and rotated upward, and the auxiliary lens 3 is rotated to the non-use position in a splashed state. At this time, the frame 4 elastically deforms, overhangs the two protrusions 71, and fits into the corresponding groove 72. As a result, the auxiliary lens 3 is held in a stable state at the non-use position while still in the splashed state.

Of course, if the frame 4 is fitted into the groove 72 at a position where it overlies only one protrusion 71, the auxiliary lens 3 is stably held at an intermediate position between the used position and the unused position. Such position adjustment can be appropriately selected depending on the incident state of strong light.

[0013]

[Other Examples]

 In the above embodiment, the frame 4 on the main body side is detachably attached to the spectacles 2, but the supporting device 1 uses the auxiliary lens 3 as a prescription lens for presbyopia correction. It can also be installed in a non-removable state. In this case, the frame 4 on the main body side is configured using the bridge of the glasses 2. In this case, if the hinges 6 themselves at both ends are hook-shaped, the auxiliary lens 3 can be detachably combined with the bridge of the spectacles 2.

Both of the frames 4 and 5 may be made of an elastic material, and if at least one of the two frames 4 and 5 is elastic, a necessary function can be secured. Since the necessary elasticity can be ensured even in a normal eyeglass frame, these frames 4 and 5 do not have to be configured as special elastic materials.

[0015]

[Effect of the device]

 In the present invention, since the elasticity of the frame itself is used for positioning the auxiliary lens, no special spring is required, and a simple gear-shaped cam is used for positioning the auxiliary lens. Therefore, the positioning mechanism for the auxiliary lens can be simplified and the weight can be reduced.

[Brief description of drawings]

FIG. 1 is a plan view of a supporting device for an auxiliary lens for glasses according to the present invention.

FIG. 2 is an enlarged cross-sectional view of a main part of the supporting device of the present invention.

[Explanation of symbols]

 1 Supporting Device for Auxiliary Lens for Glasses 2 Glasses 3 Auxiliary Lens 4 Frame 5 Frame 6 Hinge 7 Cam

Claims (3)

[Scope of utility model registration request] 1. At least one of a frame on the main body side and a frame on the auxiliary lens side is made of an elastic material, both frames are rotatably connected by two hinges at an upper portion, and one frame is provided with a gear between both hinges. -Shaped cam is fixed, and the other frame is elastically brought into contact with the groove of the cam, and a supporting device for an auxiliary lens for spectacles. 2. The spectacles auxiliary according to claim 1, wherein the main body side frame is made of an elastic material, and a hook is formed by a part of the frame so that the main body side frame can be attached to and detached from the spectacles. Lens support device. 3. The supporting device for an auxiliary lens for spectacles according to claim 1, wherein the frame on the main body side is constituted by a bridge of ordinary spectacles.