JP2003015089A - Flip-up spectacle frame - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flip-up spectacle frame which has mechanisms capable of well maintaining the turning angle of a turning front frame and having excellent durability and is constituted to make a pair of front frame do not overlap each other forward and backward like the conventional flip-up type. SOLUTION: A bridge 7 comprises a bridge casing 10 which is partly opened at its base surface, a revolving shaft 11 which is fitted into a recesses 10a on the right (the face side of a spectacle wearing person) of the bridge casing 10, is fired at its both ends respectively to the inner sides of the respective eyewires of the main front frame, is curved to a bow shape as a whole and is formed approximately elliptic at the section and a leaf spring 13 which is fixed at one end by a screw 12 to the left (the front side of the spectacle frame) 10b of the bridge casing 10, is elastically contacted at its other end with the revolving shaft 11 and is thrust to the inner side of the bridge casing 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is capable of flipping up a main front frame, to which a spectacle lens such as a colored lens or a prescription lens is attached, with respect to a sub-front frame supported by a temple, that is, rotation. The present invention relates to a flip-up type eyeglass frame which is provided as possible.

Various types of flip-up type eyeglass frames have been proposed and implemented in the past, for example, registered utility model No. 3023972 and JP-A-9-292.
No. 592, etc. can be exemplified.

The conventional flip-up type eyeglass frame generally includes a front front frame which is installed outside the back front frame located on the face side of the eyeglass wearer and covers the front surface of the back front frame. If the spectacle wearer wants to remove the front front frame from the front surface of the rear front frame by using various hinge structures so that the front front frame can be rotated, It is configured to be moved out of the field of view of the wearer by moving it.

[0004]

The conventional flip-up type eyeglass frame has a double structure in which a front front frame is positioned in front of a back front frame,
The structure is such that the spectacle frame overlaps the front and back of the face of the spectacle wearer, the lens separates from the wearer's eye, and the distance between the eye and the lens tends to vary, which is a problem in terms of vision correction. In addition, there was a problem that the double structure that overlaps the front and rear makes the design thick and heavy.

Furthermore, in the hinge structure that allows the back front frame to rotate with respect to the front front frame, the front front frame properly stops at the angle intended by the spectacle wearer with respect to the back front frame, and It is required that the angle be reliably maintained for a long period of time. However, conventionally, the hinge structure corresponding to this has a complicated structure, and conversely has a problem in durability against repeated rotation.

The object of the present invention is to provide a mechanism capable of maintaining a favorable rotation angle of the rotating front frame and having excellent durability, and further to provide a pair of members as in the conventional flip-up type. An object of the present invention is to provide a flip-up type eyeglass frame in which the front frame can be prevented from overlapping front and rear.

[0007]

In order to achieve the above object, the present invention has a sub-front frame supported on a temple and a spectacle lens, and is flipped up at the bridge portion to the sub-front frame. A flip-up type eyeglass frame comprising a main front frame rotatably provided by a mechanism, wherein the flip-up mechanism is fixed to the sub-front frame in a bridge housing, and in the bridge housing A rotary shaft body having a non-circular cross section that is fitted into the main frame and connects the pair of lens holding frames of the main front frame at the ends, and has one end fixed to the bridge housing and the other end having the rotary shaft. It is composed of a leaf spring that elastically contacts the body, so that the eyeglass wearer can rotate the main front frame with respect to the sub front frame. When the cross-section non-circular portion of the rotary shaft body in the main front frame in the leaf springs, holding by elastically contacting the inner bridge housing, will be maintained.

Further, the present invention is characterized in that the rotating shaft body is curved in the longitudinal direction of the axis and elastically contacts the inside of the bridge housing. The rotating shaft body is held and maintained by the leaf spring. In addition to the action, the curved shape of the elastic member makes elastic contact with the inside of the bridge housing, so that the rotation angle is more reliably held and maintained, and the durability against repeated rotation is further improved.

Further, the present invention is characterized in that, in the bridge casing, a fixed portion of the leaf spring and a fitting portion of the rotary shaft are arranged in front of and behind the frame. The structure of the spectacles can be easily assembled without affecting the original spectacle components.

Further, the present invention is characterized in that the upper side of the main front frame is opposed to the lower side of the sub front frame, and by adopting the above configuration, the conventional flip-up type eyeglasses. It is not a double form in which the back front frame and the front front frame are doubled in the front-back direction with respect to the face of the spectacle wearer like the frame
By designing the front frame to be placed in the vertical direction, and by arranging the front frame in the vertical direction, the distance between the wearer's eyes and the lens becomes closer and stable, like a flip-up type eyeglass frame. Even if the frame rotates, it does not affect the vision correction.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be described below.

FIG. 1 is a front view of a flip-up type eyeglass frame according to an embodiment of the present invention, wherein 1 is a sub-front frame rotatably connected to a temple 4 via a wisdom 2 and a hinge 3. , A pair of rims (lens holding frames) 6 to which a spectacle lens including a prescription lens or a simple colored lens is attached, and is rotatably supported by a sub-front frame 1 in a bridge 7 as described later. The main front frame 8 is a pair of nose pads.

FIG. 2 is a bottom view of the bridge, and FIG. 3 is FIG.
FIG. 3 is a cross-sectional view of the bridge of FIG. 1, in which a bottom surface part of the bridge housing 10 is partially opened, and a right side portion (face side of the spectacle wearer) of the bridge housing 10 is fitted into a recess 10a, Both ends are respectively fixed to the inside of each rim 6 of the main / front frame 5, and the rotary shaft 11 is curved in a bow shape as a whole and has a substantially elliptical cross section (which may be non-circular).
Left part of bridge housing 10 (front side of eyeglass frame) 10
One end is fixed to b with a screw 12, and the other end is made of a leaf spring 13 which elastically contacts the rotating shaft 11 and presses it toward the inside of the bridge housing 10.

A method of using the flip-up type eyeglass frame having the above structure will be described. As shown in FIG. 4A, the main front frame 5 is usually used so as to hang down from the sub front frame 1. In this example, description will be made assuming that there is a set relationship as shown in FIGS. 2 and 3 in this hanging state. Further, in FIG. 4, the end portion of the rotary shaft 11 is illustrated as projecting to the lens side of the rim 6, but this is for the sake of easy understanding of the description.
Actually, the end of the rotary shaft 11 is not projected to the lens side of the rim 6. In this state, the rotating shaft 11 has its curved portion elastically contacted with the recess 10a of the bridge housing 10, and is held in the recess 10a by the elastic force of the leaf spring 13.

As shown in FIG. 4B, when the wearer rotates the main front frame 5 to move it upward from the front of the eye, the wearer rotates along with the rotation of the rim 6 of the main front frame 5. The shaft 11 rotates in the circumferential direction, but since the rotating shaft 11 has a non-circular cross-sectional shape as shown in FIG. 3, it rotates while bending the leaf spring 13. When the rotation of the main / front frame 5 is stopped at an arbitrary angle (a rotation angle may be regulated by installing a stopper or the like), the bridge of the rotating shaft 11 that is curved in an arc shape is stopped. Case 10
The rotary shaft 11 is held at that position by receiving the elastic contact force with respect to and the elastic biasing force from the leaf spring 13.

Then, in order to return from the flipped-up state to the hanging state shown in FIG. 4 (a), it is easy to rotate the main front frame 5 in the direction opposite to the direction in which it is rotated in FIG. 4 (b). It can be moved in front of the wearer.

As described above, in the flip-up type eyeglass frame, in addition to the holding and maintaining action by the leaf spring 13, the rotating shaft 11 elastically contacts the inside of the bridge housing 10 by its curved shape, so that The rotation angle of the front frame 5 is more reliably held and maintained, and is retained by utilizing two kinds of elastic forces of the leaf spring 13 and the curved shape of the rotation shaft 11, so that the front frame 5 can be repeatedly rotated. The durability is improved.

Further, in the bridge housing 10, as shown in FIG.
As shown in FIG. 3, the fixed portion of the leaf spring 13 and the rotating shaft 11
By setting the insertion and insertion sites in the front and back with respect to the front surface side of each frame, the original spectacle components are not affected, and with this type of structure, the assembly of the spectacle parts is simplified.

Further, since the upper side of the main front frame 5 can be arranged below the sub front frame 1, the face of the spectacle wearer can be attached to the face of the spectacle wearer like a conventional flip-up type spectacle frame. On the other hand, the front and rear front frames are not doubled in that the front and rear front frames are doubled in the front and rear directions.
Since 5 is arranged, the spectacle design gives a thin and light feeling. Moreover, by arranging the front frames 1 and 5 so as to overlap each other in the vertical direction, the back front frame and the front front frame are doubled in the front-back direction like the conventional flip-up type eyeglass frame. Compared with, the eyeglasses frame of this kind in which the distance between the eye of the wearer and the lens becomes closer and stable and the frame rotates can be configured so as not to affect the vision correction.

As in the modified example of the bridge 7 portion shown in the bottom view of FIG. 5 and the transverse cross-sectional view of FIG. 5, the left side (glasses A plate that forms a recess 10a on the front side of the frame and inserts the rotary shaft 11 having the same configuration as described above, and performs the same function as the above on the right part of the bridge housing 10 (face side of the spectacle wearer). It is also conceivable to fix the end of the spring 13 by spot welding S or the like.

With this structure, the main front frame 5, that is, the rim 6 can be disposed directly below the sub front frame 1 as shown in the bottom view of FIG. As described above, the front frames 1 and 5 are arranged in the vertical direction, and it is possible to more clearly emphasize that it is a spectacle design that gives a thin and light feeling.

[0022]

As described above, according to the present invention, the rotation angle of the sub-front frame with respect to the main front frame is reliably held and maintained, and the rotary shaft, which is the center of rotation, is held by the leaf spring. In addition to the maintenance function, the curved shape of the elastic member elastically contacts the inside of the bridge housing, thereby improving durability against repeated rotation. Moreover, even with such a configuration, the structure of the spectacles can be easily assembled without affecting the original components of the spectacles.

Further, unlike the conventional flip-up type eyeglass frame, the front front frame is vertically arranged instead of the double front and rear front frames arranged in the front-rear direction with respect to the face of the eyeglass wearer. The design will be thin and light to be placed. Moreover, by arranging the front frame in the vertical direction, the distance between the wearer's eyes and the lens becomes closer and stable, and even if the frame is rotated like a flip-up type eyeglass frame, it is possible to correct vision. It is possible to provide a flip-up type eyeglass frame having a great practical effect, such as a configuration that does not affect.

[Brief description of drawings]

FIG. 1 is a front view of a flip-up type eyeglass frame according to an embodiment of the present invention.

[Figure 2] Bottom view of the bridge part

3 is a cross-sectional view of the bridge portion of FIG.

FIG. 4 is a diagram illustrating a usage state of the flip-up eyeglass frame.

FIG. 5 is a bottom view showing a modified example of the bridge portion.

6 is a cross-sectional view of the bridge portion of FIG.

[Explanation of symbols]

1 sub front frame 5 Main front frame 6 rims (lens holding frame) 7 bridge 10 bridge housing 10a recess 11 rotation axis 12 screws 13 leaf spring

Claims (4)

[Claims] 1. A sub-front frame supported by a temple, and a main front frame to which a spectacle lens is attached and which is rotatably provided by a flip-up mechanism at a bridge portion of the sub-front frame. A flip-up type eyeglass frame provided with the flip-up mechanism, a bridge housing fixed to the sub-front frame, and a pair of lenses of the main front frame fitted and inserted in the bridge housing. It is characterized by comprising a rotating shaft body having a non-circular cross section that connects the holding frame at an end portion, and a leaf spring having one end fixed to the bridge housing and the other end elastically contacting the rotating shaft body. Flip-up eyeglass frame. 2. The flip-up type eyeglass frame according to claim 1, wherein the rotary shaft body is curved in the longitudinal direction of the axis and is elastically contacted inside the bridge housing. 3. The bouncing according to claim 1, wherein a fixed portion of the leaf spring and a fitting insertion portion of the rotary shaft body are arranged in front and rear of the frame in the bridge housing. Lifting eyeglass frame. 4. Below the sub-front frame,
The flip-up type eyeglass frame according to claim 1, wherein the upper side of the main front frame is disposed so as to face each other.