JP5085504B2 - Glasses front frame - Google Patents

Description

  The present invention relates to a front frame of spectacles.

  Conventionally, as shown in FIG. 7, the front frame 62 of the spectacles 61 is provided with a rim hinge 65 on an engagement surface 64 provided on a part of the rim 63, and a screw 66 that is screwed to the rim hinge 65 is tightened. The lens 67 is fixed by tightening the rim 63. Then, by loosening the screw 66, the rim 63 can be loosened in the E direction and the lens 67 can be removed.

  In the front frame 62, the rim hinge 65 is brazed to the rim 63, so that the productivity is deteriorated. Further, since aluminum cannot be brazed, there is a problem that aluminum cannot be used as a material for the front frame 62.

  The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to provide a front frame of glasses that does not require brazing and can use aluminum as a material.

As a means for solving the above problems, a front frame of spectacles according to the present invention is a front frame of spectacles having two rims surrounding and fixing a lens and a bridge provided between the two rims. The bridge is divided into upper and lower parts, and an upper bridge continuing to the upper frame of the rim and a lower bridge continuing to the lower frame of the rim are provided, and the upper bridge and the lower bridge are connected via screwing means. Fixing , providing a recess on the back surface of the joint between the upper bridge and the lower bridge, engaging a metal body provided with a pair of nose pads in the recess, and fixing the metal body via the screwing means It is a thing.

  Since the upper bridge continuing to the upper frame of the rim and the lower bridge continuing to the lower frame of the rim are fixed via the screwing means, the lens can be attached to and detached from the rim via the screwing means. Therefore, it is not necessary to braze a rim hinge for attaching and detaching a lens to the rim, improving the productivity of the front frame, and using a lightweight, highly rigid, highly workable aluminum as the material of the front frame. be able to.

  The screwing means is preferably a screw.

  Since the lens is attached to and detached from the rim via the screw, the lens can be easily attached and detached.

  As one specific means, it is preferable that an engagement surface between the upper bridge and the lower bridge forms a predetermined angle with a horizontal plane.

  Since the engagement surface forms a predetermined angle with the horizontal plane, the area of the engagement surface can be increased compared to the case where the engagement surface is parallel to the horizontal plane. Therefore, by receiving the force acting on the rim in a large area, the force acting per unit area of the engagement surface can be reduced, and the strength against torsion of the front frame can be increased.

  As another means, it is preferable that the engaging surface has a step.

  The engagement surface is preferably curved.

  Since a step or a curve is formed on the engagement surface, the strength against torsion of the front frame can be increased.

  A metal body provided with a pair of nose pads is engaged with the joint portion between the upper bridge and the lower bridge, and the metal body is fixed through screwing means. Therefore, the front frame is not brazed. Can be fixed to. Therefore, the productivity of the front frame can be improved, and aluminum that is lightweight, has high rigidity, and is highly workable can be used as a material for the front frame.

  Since the lens is attached to and detached from the rim through screwing means for fixing the upper bridge and the lower bridge, it is not necessary to braze the rim hinge to the rim. Further, a metal body provided with a pair of nose pads is engaged with a joint portion between the upper bridge and the lower bridge, and the metal body is fixed by the screwing means, so that the front frame can be secured without brazing the nose pads. Can be fixed to. Accordingly, it is possible to improve productivity by eliminating a portion to be brazed from the front frame, and it is possible to use aluminum that is lightweight, highly rigid, and highly workable as a material of the front frame.

  Hereinafter, a front frame of spectacles according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

  The spectacles 11 include a spectacle frame 12 and a spectacle lens 13. The spectacle frame 12 includes a front frame 14 that holds the spectacle lens 13 shown in FIG. 1A, and temples 15 that are rotatably attached to both ends of the front frame 14 via hinges 14a. Yes.

  The temple 15 may be attached to the front frame 14 via a hinge 14a provided directly on the front frame 14 as shown in FIG. Further, as shown in FIG. 1C, the temple 15 may be attached to the front frame 14 via a hinge 14a provided on the arm 14b of the front frame 14.

  The front frame 14 according to the present invention includes two left and right rims 16 that surround and fix the outer periphery of the spectacle lens 13, and a bridge 17 provided between the two rims 16.

  In order to fix the spectacle lens 13 to the rim 16, as shown in FIG. 2, the inner peripheral surface of the rim 16 is processed to provide a triangular groove portion 16 a, and the groove portion 16 a is provided at the periphery of the spectacle lens 13. The protruding portion 13a is engaged and fixed.

  As shown in FIG. 3A, the bridge 17 is divided into an upper bridge 18 and a lower bridge 19. Both ends of the upper bridge 18 are continuous with the upper frames of the left and right rims 16, and both ends of the lower bridge 19 are continuous with the lower frames of the left and right rims 16. A screw 21 as a screwing means is screwed into a screw hole provided from the upper surface of the upper bridge 18 to the center of the lower bridge 19. The screw hole may be formed from the lower surface of the lower bridge 19 to the center of the upper bridge 18. The number of screws 21 is one, but the number is not particularly limited as long as the strength of the front frame 14 can be ensured, and a configuration with two screws 21 can also be adopted.

  The engagement surface 22 of the upper bridge 18 and the lower bridge 19 may be parallel to the horizontal plane as shown in FIG. 3B, but as shown in FIG. The strength against the twist of the front frame 14 may be increased by inclining the angle θ.

  Further, the engagement surface 22 between the upper bridge 18 and the lower bridge 19 is not limited to the above embodiment. For example, as shown in FIG. 4A, a first surface 25 extending horizontally from the front surface 23 of the bridge 17, a second surface 26 extending vertically downward from an end of the first surface 25, and a second surface An engagement surface 22 including a third surface 28 extending in the horizontal direction from the end of 26 and reaching the rear surface 27 of the bridge 17 may also be employed. At this time, the screw 21 passes through the third surface 28 to screw the upper bridge 18 and the lower bridge 19 together.

  As another example, as shown in FIG. 4B, a first surface 31 extending in the horizontal direction from the front surface 23 of the bridge 17, and a second surface 32 extending vertically downward from the end of the first surface 31. The third surface 33 extending horizontally from the end of the second surface 32, the fourth surface 34 extending vertically upward from the end of the third surface 33, and horizontally extending from the end of the fourth surface 34 An engaging surface 22 formed by a fifth surface 35 extending to the rear surface 27 of the bridge 17 can also be adopted. At this time, the screw 21 passes through the third surface 33 and screwes the upper bridge 18 and the lower bridge 19 together.

  Further, as shown in FIG. 5, a curved engagement surface 22 can also be employed.

  Further, a nose pad 37 is attached to the bridge 17. As shown in FIG. 6, the metal body 39 to which the nose pad 37 is attached via the nose connecting portion 38 is attached to the front frame 14 by engaging with the recess 40 between the upper bridge 18 and the lower bridge 19. ing. Further, the metal body 39 engaged with the recess 40 is fixed to the front frame 14 by screwing a screw 21 for fixing the upper bridge 18 and the lower bridge 19. The metal body 39 has a quadrangular cross section and extends along the longitudinal direction of the front frame 14. The metal body 39 is made of, for example, metal, titanium, or alloy.

  As shown in FIG. 1, the temple 15 includes a cored bar part 41 whose base end part is attached to the front frame 14 via a hinge 14 a and an ear hooking part 43 extending from the distal end 42 of the cored bar part 41. The modern 44 is attached to the temple 15 so as to cover the ear hook 43.

  The attachment / detachment of the spectacle lens 13 from the front frame 14 having the above-described configuration can be performed as follows. The screw 21 is removed, the engagement between the upper bridge 18 and the lower bridge 19 is released, and the upper bridge 18 and the lower bridge 19 are pulled apart to loosen the rim 16 and remove the spectacle lens 13 from the rim 16. Further, by tightening the screw 21 to strengthen the engagement between the upper bridge 18 and the lower bridge 19, the rim 16 is tightened and the spectacle lens 13 is fixed to the rim 16 via the peripheral member 20.

  According to the front frame 14 of the present embodiment, the spectacle lens 13 is attached to and detached from the rim 16 via the screws 21 that are screwed into the upper bridge 18 and the lower bridge 19, so it is necessary to braze the rim hinge to the rim 16. There is no. Further, the metal body 39 provided with a pair of nose pads 37 is engaged with the recess 40 between the upper bridge 18 and the lower bridge 19, and the metal body 39 is screwed and fixed. The pad 37 can be fixed to the front frame 14 without brazing. Accordingly, it is possible to improve the productivity by eliminating a portion to be brazed from the front frame 14, and as the material for the front frame 14, it is possible to use aluminum that is lightweight, highly rigid, and highly workable. Further, as the material for the front frame 14, a material such as titanium or magnesium that is difficult to obtain the strength of the brazed portion can be used. Furthermore, a material that does not use a brazing hinge for the rim 16, such as plastic resins such as acetate and celluloid, can be used.

  Since the spectacle lens 13 is attached to and detached from the rim 16 via the screw 21, the spectacle lens 13 can be easily attached and detached.

  Moreover, since the engagement surface 22 of the upper bridge 18 and the lower bridge 19 inclines with respect to a horizontal plane by the predetermined angle (theta), the area of the engagement surface 22 can be enlarged compared with the case where it is parallel to a horizontal surface. Therefore, by receiving the force acting on the rim 16 in a large area, the force acting per unit area of the engagement surface 22 can be reduced, and the strength against torsion of the front frame 14 can be increased.

  Furthermore, since a step or a curved surface is formed on the engagement surface 22, the strength against torsion of the front frame 14 can be increased.

(A) is a front view of the front frame of the spectacles which concerns on embodiment of this invention, (b) is a side view of the spectacles, (c) is a side view which shows the modification of (b). The AA line expanded sectional view of FIG. (A) is the elements on larger scale of the bridge | bridging of the front frame of FIG. 1, (b) and (c) are the BB line expanded sectional views which show the engagement surface of an upper bridge and a lower bridge. (A) And (b) is the elements on larger scale which show the modification of the engaging surface of FIG. The partial expanded sectional view which further shows the modification of the engaging surface of FIG. (A) is the partial expanded rear view of the bridge which fixed the metal body which has a nose pad, (b) is the CC sectional view enlarged. (A) is a rear view which shows the half of the conventional front frame, (b) is the DD line expanded sectional view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Eyeglass 13 Lens for eyeglasses 14 Front frame 16 Rim 17 Bridge 18 Upper bridge 19 Lower bridge 21 Screw (screwing means)
37 Nose pad 39 Metal body

Claims (5)

In a front frame of glasses having two rims that surround and fix a lens, and a bridge provided between the two rims,
The bridge is divided into upper and lower parts, and an upper bridge continuing to the upper frame of the rim and a lower bridge continuing to the lower frame of the rim are provided,
Fixing the upper bridge and the lower bridge via screwing means ;
A recess is provided on the back surface of the joint between the upper bridge and the lower bridge, a metal body provided with a pair of nose pads is engaged with the recess, and the metal body is fixed via the screwing means. Characteristic front frame of glasses.   The front frame of eyeglasses according to claim 1, wherein the screwing means is a screw.   The front frame of spectacles according to claim 1 or 2, wherein an engagement surface between the upper bridge and the lower bridge forms a predetermined angle with a horizontal plane.   The front frame of spectacles according to claim 1 or 2, wherein the engagement surface between the upper bridge and the lower bridge has a step.   The front frame of spectacles according to claim 1 or 2, wherein an engagement surface between the upper bridge and the lower bridge is curved.

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