JP2022021384A - Temple joint structure of eyeglasses frame - Google Patents

Abstract

To provide a temple that is attached to both sides of a front section of an eyeglasses frame and connected such that the temple is folded to be closed and opened in order to hang on the face.SOLUTION: A temple 3 is provided with connection units 9, 9 at both ends of a spirally wound wire 8. The connection units 9, 9 are connected and fixed to an ear unit 6 and a temple base unit on both sides of a front unit, and configured to be a detachable structure.SELECTED DRAWING: Figure 1

Description

The present invention relates to a joint structure of vines (temples) attached to both sides of the front portion of the eyeglass frame.

The eyeglass frame has vines (temples) attached to both sides of the front part, and the vines can be folded through joints such as hinges. FIG. 5 shows a conventional general metal eyeglass frame, but the front portion (a) has rims (b) and (b) into which a lens fits, and is connected by a connecting member (c) to form a front portion. Yoroi (d) brazed on both sides of (a), and vines (e) and (e) are connected to (d) via joints (f) and (f).

By the way, although there are various structures of the front part (a), the basic form of the eyeglass frame is to connect the joints (f) and (f) to the yoroi (d) and (d) provided on both sides of the front part (a). The vines (e) and (e) are attached so that they can be folded. Since the glasses are housed in a case when they are carried, both vines (e) and (e) are attached so that they can be folded, and hinges and other joints (f) and (f) are used so that they can be folded.

The joints (f) and (f) are equipped with shaft screws (g) and (g), and the vines (e) and (e) swivel around the shaft screws (g) and (g). However, the shaft screws (g) and (g) loosen with this turning. As a result, the vines (e) and (e) are loose and the stability is impaired when wearing glasses. Conventionally, various measures have been taken to prevent the shaft screws (g) and (g) used for the joints (f) and (f) from loosening due to the folding operation of the vine (e).

FIG. 6 shows a hinge (chi) which is a specific example of the joint (f). Both hinge pieces (ri) and (nu) are connected by a shaft screw (g) in the hinge (chi). One hinge piece (ri) is brazed to the inner surface of the yoroi (d), and the other butterfly piece (nu) is brazed to the inner surface of the vine (e).
If the vine (e) is loose, the above shaft screw (g) is tightened to deal with it, but we also know glasses that are configured to prevent the shaft screw (g) from loosening. Has been done.

For example, the “loosening prevention screw” according to Japanese Patent Application Laid-Open No. 2010-107029 ensures that the connecting portion is prevented from loosening by the screw of the glasses.
Therefore, the projected shape of the notch of the screw on the cross section of the screw shaft is a substantially triangle, and the shape connecting the three vertices with a straight line is an almost right-angled unequal-sided triangle, and the right-angled or obtuse angle of the right-angled unequal-sided triangle. One of the vertices is formed at the top of the return thread, the other at the bottom of the valley, and the apex of the remaining acute angle is at the top of the push-in side, and so on. The notch is formed so as to have at least one notch in one rotation portion.

The "joining structure of spectacle parts and parts used therein" according to JP-A-2003-185980 prevents loosening of screws at the screw joints of both spectacle lenses and spectacle parts when the spectacle lens and the spectacle parts are bonded, and the spectacle frame parts and the spectacles. It is possible to prevent the rotation of the lens and firmly bond the two.
As a function required for eyeglasses, stability that does not shift when the eyeglasses are put on the face is important. For that purpose, the shaft screws (g) and (g) of the above joints (f) and (f) should not be loosened, and the spring force that presses the side of the face while wearing glasses is applied. ), (E). Conventionally, a joint called a spring hinge has also been used conventionally.

By the way, the joints (f) such as the hinges (chi) are standard products and are not designed in consideration of the harmony with the appearance of the eyeglass frame. And it is impossible to remove the brazed hinge and replace it with a new one.
"Loosening prevention screw" according to JP-A-2010-107029 "Coupling structure of eyeglass parts and parts used for them" according to JP-A-2003-185980.

As described above, the conventional spectacle frame vine joint structure has the above-mentioned problems. The problem to be solved by the present invention is this problem, which does not have a joint with a shaft screw for folding the vine, and has a spring force that the vine presses against the side of the face when wearing glasses. Further, the present invention provides a spectacle frame vine joint structure configured so that the joint can be easily removed and replaced.

The eyeglass frame targeted by the present invention has a front portion and a vine, and the vines are attached to both sides of the front portion and are connected via a joint made of a spiral wire having excellent springiness. Connecting portions are provided at both ends of the joint, and are connected to the front vines and vines via the connecting portions. However, the specific connection structure is not limited.
The joint does not have a hinge-like shaft screw, but is configured as a spiral made of resin or metal wire, and the vine is folded by deforming the spiral joint and also opening. It is possible to push the vine outward from the state where it is in place, but this operation is also performed by deforming the spiral joint.
In the free state where the eyeglass frame is removed from the face, the spiral joint is configured so that both vines are balanced at a position where they can cross in a substantially X shape.

Then, a locking piece is formed at the tip of the vine, and the engaging groove with which the locking piece engages is used as the joint so that the vine is not opened by the action of the elastic restoring force of the spiral joint when the vine is folded. It is provided.
Here, the form of the front portion is not limited, and if there is a full rim into which the lens fits, if there is a half rim that restrains only the upper side of the lens and a water thread that supports the lower side of the lens, and there is no rim without a rim. Either of the cases of the front part may be used. Further, the number of turns of the wire rod constituting the joint is not limited.

The joint of the eyeglass frame according to the present invention is configured without using screws. Therefore, the vine does not rattle and there is no need to retighten the screws.
In addition, since the joint does not use screws, the folding operation of the vine is always performed smoothly, and the glasses worn on the face are stable. In the free state with the glasses removed, both vines cross roughly in an X shape and are in a state of bending inward to some extent from the open state, so when wearing the glasses on the face, the vines are pushed outward and opened. It also has a function as a spring hinge.

The joint of the present invention can be removed and replaced, the strength of the spiral spring can be appropriately selected, and it can be adapted to the design of the eyeglass frame. That is, it can be connected to the vine and the vine via the connecting portions provided on both sides of the joint, and the vine can be replaced.
Then, the vine attached to the front portion is bent inward and folded, and the tip locking piece can be locked in the engaging groove provided in the joint, and the vine does not open. In addition, the spiral joint can exhibit the same action and effect as a spring hinge, and when wearing glasses, by pushing the vine outward, the reaction force acts on the side of the face and the glasses It is worn stably.

A plan view in which both vines are crossed in an approximately X shape and opened with the eyeglass frame removed from the face. Front view of the eyeglass frame. Side view of the eyeglass frame. A specific example of a joint that connects vines. Conventional general eyeglass frame. A hinge that is a conventional joint that connects vines.

1, FIG. 2, and FIG. 3 are examples showing the eyeglass frame according to the present invention, FIG. 1 is a plan view, FIG. 2 is a front view, and FIG. 3 is a side view. In the figure, 1 is a front part, 2 is a vine (temple), and 3 is a joint. The front portions 1 are formed with rim portions 4 and 4 symmetrically with respect to the connecting portion 5, and twisted portions 6 and 6 are provided on both sides of the front portion 1. The lenses 7 and 7 are fitted in the rim portions 4 and 4.

By the way, the front portion 1 shown in the figure is injection-molded using a resin as a material, and the rim portions 4, 4 and the connecting portions 5, and the twisted portions 6, 6 are integrally molded.
The vines 2 and 2 are connected to both sides of the front portion 1 via joints 3 and 3 and can be opened and closed. FIG. 1 shows a case where the eyeglass frame is removed from the face, and both vines 2 and 2 bend inward and cross in a substantially X shape. The case where the cross is crossed in an X shape is in a free state, and stress and strain are not generated in the wire rod constituting the joint 3.

As a specific example is shown in FIG. 4, the joint 3 is formed by rolling a strip-shaped wire rod 8 having a constant thickness and a constant width into a spiral shape, and connecting portions 9 and 9 are formed at both ends thereof. .. In the connecting portion 9, two arms 10 and 10 having a predetermined interval extend in parallel in the outward direction, and claws 11 and 11 projecting in the vertical direction are provided at the tip of the arm.
Since the eyeglass frame shown in the figure is made of resin, the joint 3 is also made of resin, but it can also be made of metal.

The tip of the twisted portion 6 has an opening so that the connecting portion 9 can be aligned with each other, and the base end of the vine 2 is also provided with an opening so that the connecting portion 9 can be fitted. If the connecting portion 9 is fitted into this opening and both arms 10 and 10 are fitted, the claws 11 and 11 provided at the tip are engaged with the holes 12 and 12 provided through the upper surface and the lower surface of the opening. Can be done. Therefore, the connecting portion 9 is fixed via the claws 11 and 11 without coming off the opening.
Since the holes 12 and 12 penetrate to the outside, when removing the joint 3, the holes 12 and 12 can be removed by inserting a pin into the holes 12 and 12 to remove the claws 11 and 11 and pulling in that state.

The joint 3 of the present invention is configured to be replaceable, and therefore, the form and color suitable for the design of the front portion 1 and the vine 2 can be selected and attached.
The form of the connecting portions 9 and 9 provided on both sides of the joint 3 is free, and the form is not limited to the two arms 10 and 10 having the claws 11 and 11 at the tips. For example, it is also possible to fit the connecting portion into the opening and screw it from the inside so that it will not come off.

Further, although the joint shown in FIG. 4 has a single spiral, it may have a double or triple spiral, and the spring force can be adjusted.
FIG. 1 shows a state in which both vines 2 and 2 are substantially crossed in an X shape, and residual stress is not applied to the spiral joint 3, and the spiral shape is formed when the glasses are hung on the face or when the glasses are completely folded. The joint 3 of the above is twisted and deformed. When the eyeglass frame is hung on the face, the outer diameter of the ring of the joint 3 becomes large, and conversely, when the eyeglass frame is completely folded, the outer diameter of the ring of the joint 3 becomes small.

When the vines 2 and 2 are folded, the locking piece 13 provided at the tip of the vine engages with the engaging groove 14 formed in the joint 3 so as not to be opened by the elastic restoring force of the joint 3. Can be done. The length of the vine 2 is the size (length) at which the locking piece 13 at the tip engages with the engaging groove 14, and the locking piece 13 is smoothly curved so as to be easily engaged with the engaging groove 14. ing.

1 Front part 2 Crane 3 Joint 4 Rim part 5 Connection part 6 Yoroi part 7 Lens 8 Wire rod 9 Connection part
10 arm
11 claws
12 holes
13 Locking piece
14 Engagement groove

Claims (3)

In a joint that is attached to both sides of the front part of the eyeglass frame and is connected so that the vine is folded and closed or opened for hanging on the face, the joint is wound in a spiral shape. A spectacle frame vine joint structure characterized in that connecting portions are provided at both ends of the broken wire, and the connecting portions are connected and fixed to the twisted portions and the vine bases on both sides of the front portion, and have a removable structure. The vine joint structure of the eyeglass frame according to claim 1, wherein the wire rod is formed into a strip having a constant thickness and an integral width. The connecting portion is provided with two arms extending in parallel at predetermined intervals, and claws protruding upward and downward at the tip of the arm, and an opening into which the connecting portion is fitted is formed at the tip of the twisted portion and the base of the vine. The vine joint structure of the eyeglass frame according to claim 1 or 2, wherein the upper surface and the lower surface of the opening are provided with holes for engaging the claws.

Images