JP2020056892A - Spectacles frame temple and temple joint structure - Google Patents

Abstract

To provide a spectacles frame temple and a temple joint structure whose temple can bend and deform not only outward but also upward and downward.SOLUTION: Disclosed is a temple 2 which is attached to both sides of a front part 1 so as to be able to be folded. In the temple 2 which functions so as to be able to be pushed and opened further outward from a state where the temple is opened when spectacles are worn, a stress action path from the base side to the tip of the temple 2 is made longer. Moreover, a temple side member 9 of a joint member 6 which is connected to the wraparound endpiece 7 of the front part 1 is made of a thin plate material to bend and deform in the plate thickness direction, and the temple 2 excellent in flexural deformation in the outward direction is connected and fixed to the temple side member 9.SELECTED DRAWING: Figure 1

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crane and a crane joint structure of an eyeglass frame capable of flexing and deforming not only outward but also upward and downward.

  A joint that functions so that it can be slightly pushed outward from the open state of the crane is generally referred to as a spring hinge, and is often used as a crane joint means of an eyeglass frame. FIG. 6 shows a joint structure called the most basic spring hinge. That is, the basic idea of the spring hinge is that a fixed butterfly (b) is fixed to the yoke (a) by brazing, and the other butterfly is a sliding butterfly (c) for a fixed distance of sliding. Can be given an outward opening to the vine (d).

A guide groove is formed in the crane (d), and the sliding butterfly (c) slides with the guide groove as a guide. The inside of a spring case (e) constituting the sliding butterfly (c) is described. The coil spring (g) is housed in the space (f), and when the vine (d) is pushed outward and opened, the spring case (e) is drawn toward the fixed butterfly piece (b) and compressed. The coil spring (g) is provided at the inner space entrance of the spring case (e) and hits the claw (h) locked in the locking groove (h) of the vine (d), and the claw (h) functions as a stopper. I have. As a result, the restoring force of the coil spring (g) acts on the vine (d) and attempts to return the vine (d) to its original position.

  By the way, the hinge structure in which the coil spring (g) is built in the spring case (e) functions by sliding along a guide provided on the vine (d) as shown in the figure, but the sliding function is impaired. There is also a problem that it is easy to break down, and once broken down, it is difficult to repair. If the conical head of the core bar (nu) inserted into the coil spring (g) and the center hole of the coil spring (g) is pushed in and locked with the claw (ri), the internal space (f) of the spring case (v) The nail (c), the coil spring (g), and the core (nu) cannot be removed from the cable.

  By the way, the spring hinge shown in the figure accommodates a coil spring (g) in the internal space (f), and is configured to generate a spring force by compressively deforming the coil spring. In addition, a sliding member that expands and contracts the coil spring (g) is required. If the sliding of the sliding member (c) is hindered by dust or rust, the operation of opening the vine is smooth. Will not work.

As described above, a spring hinge formed by using a coil spring has a complicated structure and easily breaks down. Therefore, a spring hinge including a leaf spring instead of the coil spring is also known.
For example, the “truss joint structure for eyeglass frames” disclosed in Japanese Patent Application Laid-Open No. 10-133153 has a simple structure in which the operation of folding the crane is smooth and there is no sliding portion.
In other words, the yoroi fixed to the front frame is fixed to the yolo side joint piece, the vine is fixed to the vine side joint piece, respectively, and combined with each other, and the yolo side joint piece is provided with a joint portion having a pin hole formed of a long hole. It has a curved surface, and a leaf spring is extended from the crane-side joint piece in one direction toward the yoke-side joint, and the distal end portion abuts the curved surface, and is connected to each other via a screw pin.

  Japanese Patent Application Laid-Open No. 2003-57605 discloses a “crane joint structure for eyeglass frames” that has the same function as a spring hinge that allows the eyeglass frame to be slightly pushed outward from the open state. It is a crane joint structure with a simple structure and low manufacturing cost. Therefore, the base of the leaf spring is fixed to the inside of the vine, and the tip is a free end, and the tip is curved and abuts against the yoro to bias the spring force.

Japanese Patent Application Laid-Open No. Hei 10-133153 discloses a "crane joint structure for eyeglass frames". Japanese Patent Application Laid-Open No. 2003-57605, entitled "Crane joint structure for eyeglass frame"

As described above, a sliding hinge having a coil spring and a spring hinge having a leaf spring are known. However, the vine provided with the conventional spring hinge can be slightly pushed outward from the open state, but is merely an opening and closing operation in a horizontal plane. That is, the crane cannot be bent and deformed in the vertical direction.
The problem to be solved by the present invention is to provide a joint structure of a crane and a crane of a spectacle frame that functions so that a crane in an open state can be pushed outward and opened and bent upward and downward. .

The vine (temple) of the eyeglass frame according to the present invention has a function as a spring hinge.
The crane of the glasses frame according to the present invention can be folded and closed, and can be pushed outward from the open state. Further, the crane functions to be able to bend and deform upward and also to deform downward. That is, the crane can be bent and deformed in all directions (360 °) and changing its direction.

By the way, the vine is attached via a joint member, which is a kind of hinge that can be connected to the sword on the front part. The yoke-side member and the vine-side member are connected via a shaft, and the vine-side member is made of a thin plate material and is connected to the base of the vine. Here, the specific structure of the vine-side member is not limited, but generally has a substantially Z-shape, and the tip of the inner piece is connected to the yolo-side member via a shaft screw, and the base of the vine is an outer member. Connected and fixed to one end by brazing.
The length from the outer piece tip to the inner piece tip increases, that is, the stress path length increases and the amount of flexure deformation increases.

The vine is made of a conventional elongated plate-shaped wire, and has a low bending rigidity so as to be easily deformed. For example, a slit groove is formed in the vine, and the vine has the appearance of a pattern that is repeatedly formed at a constant pitch, and has a vine decoration effect. However, the specific form of the slit groove is not limited.
Although the substantial length of the crane is almost fixed, the length of the stress path acting on the crane is increased so that the amount of bending deformation is increased.

In the crane of the present invention, a slit groove is formed so that the crane itself can be reduced in bending rigidity and deformed flexibly. Although the groove width of the slit groove is small, the bending rigidity of the crane is reduced by being repeatedly formed at a constant pitch from the crane base portion to the tip portion, so that the crane can be largely bent outward. That is, by increasing the length of the path of the stress based on the force acting on the tip of the crane, the amount of bending deformation increases.
Moreover, unlike the conventional spring hinge, not only does it flex outwardly from the open state, but also because the crane-side member that forms the joint member is made of a thin plate, the crane can move upward and downward. It can bend and deform.

The vine-side member has a substantially Z shape, and the base of the vine can be connected to and fixed to the tip of the outer piece. The crane-side member is made of a thin plate material and can bend in the plate thickness direction. For this reason, even when the vine itself does not form a slit groove as in the conventional case, the vine can bend its direction 360 degrees in all directions due to the bending deformation of the vine side member.
Therefore, the load acting from all directions can be reduced, and the eyeglass frame can be worn comfortably, and the deformation of the frame and the distortion of the lens can be prevented even when used for many years.
Although the base of the vine is connected to the tip of the Z-shaped joint, the form of the vine is not particularly limited and can be adopted.

1 is a plan view of an eyeglass frame provided with a crane joint structure according to the present invention. 1 is a front view of an eyeglass frame provided with a crane joint structure according to the present invention. 1 is a side view of an eyeglass frame including a crane joint structure according to the present invention. Specific examples of the crane side member of the joint member constituting the crane joint structure, Specific form of a crane with excellent flexural deformation. An embodiment showing a conventional spring hinge.

FIGS. 1, 2 and 3 show an embodiment of an eyeglass frame provided with the crane of 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), 3 is a rim, 4 is a connecting member, 5 is a nose pad, 6 is a joint member, and 7 is a yoroi.
The front portion 1 has both rims 3 and 3 connected by a connecting member 4, and nose pads 5 and 5 are attached at the center, and lenses 8 and 8 are fitted to the rims 3 and 3.
Then, the crane 2 is connected to the yoro 7 via the joint member 6 and is folded. The basic form as an eyeglass frame is common to the related art.

Although the crane 2 is folded via the joint member 6 attached to the yoke 7, the joint member 6 of the present invention can be flexibly deformed, and the crane itself has a function of flexing and deforming. It can be pushed outward from the open state shown in FIG. 1 and functions in the same manner as a conventional spring hinge.
Further, the crane 2 of the present invention can not only be pushed open outward, but also bend upward and bend downward.

Therefore, in the present invention, the joint member 6 and the crane 2 are configured with features. The joint member 6 has a structure in which the yoke-side member 8 and the crane-side member 9 are connected by a shaft screw 10, and the yoke-side member 8 and the crane-side member 9 can be bent around the shaft screw 10.
Then, the side member 8 is brazed to the front end of the side 7 of the front part 1, and the vine member 9 is connected and fixed to the base of the vine 2.

FIG. 4 is a specific example showing the crane-side member 9 constituting the joint member 6 alone. The crane-side member 9 is formed by stamping a thin metal plate, and has an outer piece 11, an inner piece 12, and a middle piece 13 having a substantially Z-shape as shown in FIG. A shaft hole 14 through which the shaft screw 10 is inserted penetrates the tip of the shaft. A small claw 15 is formed at the tip of the outer piece 11 so as to protrude toward the middle piece 13.
An outer space 16 is provided between the outer piece 11 and the middle piece 13, and an inner space 17 is provided between the inner piece 12 and the middle piece 13.

  The crane-side member 9 is manufactured by punching a metal plate having excellent elasticity, and has a small thickness, for example, about 1.2 mm. Therefore, a shaft hole 14 provided at the tip of the inner piece 12 has a base portion. In this case, the tip of the outer piece 11 can be largely bent in a direction perpendicular to the paper surface.

The base of the crane 2 is connected and fixed to the outer piece 11 of the crane side member 9, so that the crane 2 can bend and deform upward and downward.
The shape of the vine-side member 9 shown in FIG. 4 is merely one specific example, and any shape may be used as long as it is made of a thin plate and can be bent in the plate surface direction. Due to the Z-shape, the length from the shaft hole 14 to the tip of the outer piece 11 becomes longer, so that the amount of bending deformation increases.

FIG. 5 is a specific example showing the crane 2. In FIG. 3, it is attached to Freund 1 and a modern 18 made of resin is inserted at the tip, but this modern 18 is not inserted in FIG.
The crane 2 shown in the drawing is provided by penetrating a slit groove from the front surface to the back surface, so that the amount of bending deformation is larger than that of a crane having the same dimensions.
That is, the crane 2 is composed of a plurality of pieces 19a, 19b, 19c, 19d. These pieces 19a, 19b, 19c, 19d are connected to each other.

The piece 19a has a U-shape, and a connecting piece 20a extends from the tip, and the connecting piece 20a is connected to an adjacent piece 19b. Moreover, both sides of the piece 19b are U-shaped, and the connecting piece 20a is connected to the U-shaped bottom piece 21 of the piece 19b. The piece 19b is connected to the next piece 19c, but is connected by a connecting piece 20b.
The connecting piece 20b is connected by a connecting piece 20b extending from a U-shaped bottom piece 21 formed on both sides of the piece 19b.
Furthermore, the tip of a connecting piece 20c extending from the U-shaped bottom piece 21 formed on the piece 19c is connected to the piece 19d.

The pieces 19a, 19b, 19c, 19d are provided with slit grooves 22, 22,. Are formed in the pieces 19a, 19b, 19c, 19d by the slit grooves 22, 22,..., And the connecting pieces 20a, 20b,. By connecting, the action path of the stress is elongated.
As compared with the crane 2 having the same length in appearance, the amount of bending deformation caused by deformation based on the stress is increased by expanding the action path of the stress.

The crane 2 is connected and fixed to the crane-side member 9 of the joint member 6. The outer piece 11 fits into a fitting groove 23 formed in the base side piece 19a of the crane 2 having a U-shape, and the claw 15 formed at the tip of the outer piece 11 is engaged with the bottom piece 24 of the piece 19a. And the nail | claw 15 is fixed to the bottom piece 24 by brazing, and is connected with the crane | side member 9.
As is clear from FIG. 1, the side member 8 is brazed and fixed to the side 7, and for this purpose, the crane 2 is connected to the side 7 via a joint member 6.

  The bending rigidity of the crane 2 is low, so that the crane 2 can be largely bent and deformed. The crane 2 can largely bend and deform against the force acting on the modern 18 at the tip of the crane with the crane side member 9 serving as the base of the crane 2 as a base point. That is, when the crane 2 is configured as shown in FIG. 5, the stress action path becomes longer, and the amount of flexural deformation increases as compared with a crane having the same length in appearance.

By the way, the crane 2 of the present invention can be bent and deformed in any direction of 360 °.
That is, the vine 2 can be largely bent and deformed outward from the open state, and since the vine side member 9 is made of a thin plate material, the vine 2 can be bent and deformed upward. Also, it can be bent and deformed downward.
Therefore, not only the function as a conventional spring hinge, but also the load acting from all directions is reduced, and it becomes a comfortable eyeglass frame, and it is possible to prevent deformation of the frame and distortion of the lens even if used for many years Becomes

DESCRIPTION OF SYMBOLS 1 Front part 2 Crane 3 Rim 4 Connecting member 5 Nose pad 6 Joint member 7 Yoroi 8 Yoroi side member 9 Tsuru side member
10 axis screw
11 outer piece
12 inner pieces
13 middle piece
14 Shaft hole
15 claws
16 Outside space
17 Interior space
18 Modern
19 pieces
20 splice pieces
21 Bottom piece
22 slit groove
23 Fitting groove
24 Bottom piece

Claims (4)

The crane that can be folded on both sides of the front part functions so that it can be further pushed outward from the open state when putting on the glasses. An eyeglass frame crane characterized by a longer stress action path. A plurality of pieces are connected to the vine by a slit groove that penetrates, a U-shape is formed at the side end of the piece, and a connecting piece that fits in the U-shaped space and extends from an adjacent piece is connected to the bottom piece. The vine of the spectacle frame according to claim 1. The crane mounted on both sides of the front part so that it can be folded can be bent outward from the open state when wearing glasses, and can be bent upward and downward, that is, 360 ° In the crane joint structure that functions to be able to bend in all directions, the crane-side member of the joint member connected to the yoke of the front part is bent and deformed in the thickness direction of a thin plate material and horizontally arranged, A crane joint structure for an eyeglass frame, wherein a crane excellent in bending deformation outward is connected and fixed to the crane side member. The crane-side member has a shape approximately Z-shaped, has an outer piece, an inner piece, and a middle piece, and has a shaft hole at a tip end of the inner piece through which a shaft screw connected to the yolo-side member is inserted. 4. The spectacle frame crane joint structure according to claim 3, wherein the eyepiece frame is connected and fixed to the tip of the outer piece.

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