JP2021081526A - Temple of spectacles - Google Patents

Abstract

To provide a temple of spectacles that improves a fixing property to a side head portion and safety with a simple structure, makes spectacles hard to deviate, can sufficiently and safely fix a front frame even if the temple is short, and has a little restriction property in design.SOLUTION: A temple of spectacles has a front frame 11 holding lenses, and a temple 13 attached to left and right end portions of the front frame 11. The temple of the spectacles has a curved portion 13a curving inward from the end portions toward tip ends. A curvature radius R1 of the curved portion 13a is set so that at least a part of the curved portion 13a is pressed against a side head portion Ha of a spectacle wearer to be elastically deformed while maintaining a curved shape, and is contacted with a side head portion Ha on a tangent T. The temple 13 may be formed to be short so that the left and right temples do not overlap when folded.SELECTED DRAWING: Figure 2

Description

The present invention relates to the temples of spectacles, and in particular, even if the face width of the spectacle wearer changes in size or the head shape of the spectacle wearer is asymmetrical, the temporal region of the spectacle wearer can be easily configured. The present invention relates to a temple of spectacles that is pressed against (particularly near the temple) so that the spectacles can be firmly and stably fixed to the head of the spectacle wearer.

Various means have been proposed to prevent the spectacles from slipping, but by devising the shape of the temple, the adhesion to the temporal region of the spectacle wearer is improved, thereby making the spectacles difficult to slip. For example, those disclosed in Patent Documents 1 to 3 are known.

In the spectacle frame described in Patent Document 1, by forming an S-shaped hairpin-shaped spring portion 4 near the base end of the temple 3, the spectacle frame is displaced outward in the width direction as described in FIG. 2 of the document. When this is done, a sustainable restoring force F works to improve the adhesion to the side surface of the head when wearing glasses and prevent it from slipping.

In the spectacle frame described in Patent Document 2, a connecting portion (24) having a first chevron portion (portion indicated by reference numerals 20 and 22) protruding outward when the temple is in the open position, and the connecting portion (24) and the connecting portion. A temple body (30) having a second chevron portion (portion indicated by reference numerals 26 and 28) continuously formed in (24) and projecting outward is provided, and the entire temple body (30) is mounted. It is kept in close contact with the person's temporal region to prevent it from slipping.

The occipital bladder frame of the spectacles described in Patent Document 3 has a shape as shown in FIG. 3, so that the portion (1.C) protrudes inward and the portion (1.C) to the portion (1.B). The front frame (2) is prevented from being displaced by forming the shape so that the back of the head is sandwiched and brought into close contact with the portion (1.A).

Jitsuto 3079244 Gazette Japanese Unexamined Patent Publication No. 2014-170025 Actual Kaihei 07-0233222

However, in the eyeglasses described in Patent Document 1, there is a problem that the S-shaped spring portion (4) rather keeps the vicinity of the base of the temple (3) away from the temporal region and the fixing force near the ear is reduced. , The S-shaped spring portion (4) increases the overall width of the spectacles, and when folded, the overall thickness of the spectacles becomes thicker, and there is a problem that the design of the spectacles is also greatly restricted.
Further, the spectacles described in Patent Document 2 have a problem that the configuration becomes complicated and the price of the spectacles is pushed up, and there is a problem that the total thickness of the spectacles becomes thick when folded.
Further, the spectacles described in Patent Document 3 have a problem that the design of the spectacles is also greatly restricted.

The present invention has been made to solve the above-mentioned problems at once, and when folded, the spectacles can be accommodated within a thickness almost the same as that of the front frame, and can be moved to the temporal region with a simple configuration. The purpose is to provide temples for eyeglasses that improve the fixing and stability of the eyeglasses so that the eyeglasses do not slip easily, the front frame can be fixed sufficiently stably even if the temple is short, and the design restrictions are small. To do.

In order to achieve the above object, the temple of the spectacle of the present invention is the temple of the spectacle having a front frame for holding the lens and temples attached to the left and right ends of the front frame, from the end to the tip. It has a curved portion that curves inward toward the surface, and the radius of curvature of this curved portion is elastic while maintaining the curved shape by pressing at least a part of the curved portion against the temporal region of the spectacle wearer. The configuration is such that it is deformed and is set to come into contact with the temporal region on a tangent line.

Since the temple of the spectacles of the present invention is configured to be curved inward, the entire width of the spectacles is not expanded, so that there are few restrictions on the design, and when folded, the temples are housed within the same wall thickness as the front frame. It becomes possible to do. Further, if the radius of curvature of the curved portion is appropriately set, the inwardly convex curved portion contacts the temporal region at any position of the curved portion even if the shape and size of the head vary from person to person. However, since it elastically deforms while maintaining the curved shape and comes into contact with the temporal region on a tangential line, a sufficiently stable and strong fixing force can be obtained.
Therefore, as described in claim 2, even if the temples are short so that the left and right temples 13 do not overlap when the temples are folded, the spectacles can be stably placed on the head of the spectacle wearer. It becomes possible to fix it.
As described in claim 3, the radius of curvature of the curved portion may be around 250 mm (200 mm to 300 mm).

A preferred embodiment of the spectacle temple of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a plan view illustrating an example of eyeglasses provided with the temple of the present invention, FIG. 2 is a partially enlarged view of FIG. 1 for explaining the shape of the temple, and FIG. 3 is a temple of the eyeglass of the present invention. It is a top view explaining the action of.

The spectacles 1 of this embodiment are connected to a front frame 11 holding a lens, a hinge 12 provided at the right end of plain hot water of the front frame, and the front frame 11 via the hinge 12, and are folded or folded in the direction of arrow I. It has a temple 13 that can be freely deployed. In this embodiment, the temple 13 is formed to be short enough to extend from the hinge 12 to the temple portion of the spectacle wearer so that the left and right temples 13 do not overlap when folded (indicated by a virtual line in the figure), and the tip thereof is formed. A modern 14 (or pad) made of a resin such as silicon is attached to the temple.
Further, the temple 13 is folded when the temple 13 is rotated in the direction of the arrow I in FIG. 1 in the same manner as in Patent No. 4881265 (trade name “Paper Glass” (registered trademark)) by the applicant of the present application (FIG. 1). The temple 13 is located in the same plane as the front frame 11 and becomes thin so that it can be comfortably accommodated in the chest pocket of the shirt of the spectacle wearer. In particular, since the temple 13 of the present invention is curved in the same direction as the lens is curved, there is an advantage that the temple 13 can be housed within the thickness range of the front frame 11 and the lens.

[Temple configuration]
As the material of the temple 13, an elastic metal or resin can be used. The metal is, for example, titanium, titanium alloy, nickel alloy, etc., and the resin is nylon resin, etc., which are generally used for temples of eyeglasses. Materials that are used can be mentioned.
As shown in FIG. 2, the temple 13 has a curved portion 13a in which the hinge 12 and the modern 14 are curved inward (on the spectacle wearer side) with a radius of curvature R1. Therefore, when the spectacles 1 are viewed from the front, the temples 13 project almost to the left and right, which has a small effect on the design of the spectacles 1.

As shown in FIG. 3, the curved portion 13a contacts the temporal region at any position of the curved portion 13a. If the radius of curvature R1 of the curved portion 13a is appropriately selected, the curved portion 13a has a curved shape due to the pressing force P generated in the contact portion when the spectacles 1 are attached to the head H of the spectacle wearer. It is elastically deformed while being held, and is in contact with the temporal region on a tangential line. 4 (a) and 4 (b) are views showing changes in the contact state of the curved portion 13a when the shape of the temporal Ha of the spectacle wearer is different. Contact on the tangent line T of the curved portion 13a, and the pressing force P acts in the portion perpendicular to the tangent line T, so that the spectacles 1 is firmly and stably fixed to the head H of the spectacle wearer. Becomes possible. If the radius of curvature R1 of the curved portion 13a is appropriately selected, the front frame 11 holding the lens is firmly and stably attached to the head H of the spectacle wearer even in the short temple 13 as in this embodiment. Can be fixed to.

The optimum radius of curvature R1 varies depending on the material constituting the temple 13 and the cross-sectional shape, but can be selected by an experiment or the like. An example is shown in Table 1 below.
In the example of Table 1 below, the total length (length from the hinge 12 to the tip to which the modern 13 is attached) is obtained by flattening a β-titanium round wire (diameter 1.0 mm) to 1.2 mm × 0.8 mm. ) Using a 64 mm temple, an experiment was conducted in which the radius of curvature R1 was changed from 50 mm to 350 mm with respect to the degree of fixation (whether or not the face would not shift even if the face was shaken slightly strongly up, down, left and right).

In Table 1, those with insufficient fixation and instability and easy to shift the spectacles were marked with x, those with sufficient fixation and stability with the spectacles not easily slipping were marked with ◯, and those in between were marked with Δ.
From the results in Table 1, in the case of this temple 13, if the radius of curvature R1 is about 250 mm, specifically 200 mm to 300 mm, the inwardly convex curved portion 13a comes into contact with the temporal Ha, and the contact portion. It can be seen that a sufficiently stable and high fixing force can be obtained because the curved portion 13a is elastically deformed while maintaining the curved shape and comes into contact with the temporal Ha on the tangential line due to the pressing force P from the above.
In the above example, β titanium was used, but it can be inferred that the same result can be obtained with other metals having similar elasticity.

Although preferred embodiments of the present invention have been described, the present invention is not limited to the above description.
For example, in the above description, the short temple 13 is taken as an example, but the present invention is a long temple similar to Japanese Patent No. 4881265 (trade name “Paperglass” (registered trademark)) by the applicant of the present application. Can also be applied. In this case as well, as shown in FIG. 5, it is preferable to form the curved portion 13a'at the same portion as the temple 13 described above in the temple 13', and the rear portion 13b' continuous with the curved portion 13a' is formed as the head H. By forming the shape along the above, the temporal Ha can be pressed by the curved portion 13a'to stably fix the temple 13'to the head H, and the rear portion 13b'is the head H. By following the above, the fixation and stability of the temple 13'to the head H can be further improved.
Further, although the curved portion 13a is provided at one position on the temple 13, a plurality of curved portions 13a and 13a'having the same or different radius of curvature R may be provided on the temples 13 and 13'.
Further, the temple of the present invention can be applied to eyeglasses having no folding mechanism (not having a hinge 12).

It is a top view explaining an example of the eyeglasses provided with the temple of this invention. It is a partially enlarged view of FIG. 1 for explaining the shape of a temple. It is a top view explaining the action of the temple of the spectacles of this invention. It is a figure which shows the change of the contact state of the curved part 13a when the shape of the temporal Ha of a spectacle wearer is different. It is a top view explaining the action of the temple of the spectacles of this invention when applied to a long temple.

1 Eyeglasses 11 Front frame 12 Hinge 13, 13 ′ Temple 13a, 13a ′ Curved part 14 Modern R1 Radius of curvature of curved part H Head of spectacle wearer Ha Temporal head P Pressing pressure T Tangent of curved part

Claims (3)

In the temple of an eyeglass having a front frame for holding a lens and temples attached to the left and right ends of the front frame.
It has a curved portion that curves inward from the end to the tip.
The radius of curvature of the curved portion is elastically deformed while maintaining the curved shape by pressing at least a part of the curved portion against the temporal region of the spectacle wearer, and comes into contact with the temporal region on a tangential line. That it is set to
The temple of eyeglasses featuring. The temple of eyeglasses according to claim 1, wherein the temple is formed to be short so that the left and right temples do not overlap when folded. The temple of spectacles according to claim 1 or 2, wherein the radius of curvature of the curved portion is 200 mm to 300 mm.

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