JP3412046B2 - Attachment structure between hinge piece and frame member, spectacles provided with the attachment structure, and attachment method between hinge piece and frame member - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure for a hinge piece and a frame member, eyeglasses having the mounting structure, and a method for mounting a hinge piece and a frame member. . 2. Description of the Related Art In recent years, metal materials for frame parts used for eyeglasses are lightweight, robust, shape memory, superelastic, and the like.
Various things have been developed from the viewpoint of processability and the like.
For example, nickel-titanium alloys have excellent shape memory properties and superelastic properties, and are light and durable.
It is often used for temples, brackets, bridges, etc. of high-end spectacles. [0003] Titanium-based alloys are lightweight, rich in rigidity, and easily processed by cutting or the like. Therefore, titanium alloys are often used for rims, hinge pieces, and the like that require processing and are difficult to deform. Other,
Nickel alloys, nickel alloys, stainless steel, aluminum, magnesium, and the like are known as materials, and components made of metal materials having such various characteristics are interconnected to form one eyeglass frame. [0004] With the diversification of such materials, it is necessary to join dissimilar metal parts when manufacturing an eyeglass frame. In the above example, nickel
This is a case where a temple or bracket made of a titanium alloy is joined to a hinge piece made of a titanium alloy (see FIG. 13). [0005] In joining such dissimilar metal parts, usually,
Methods such as brazing, spot brazing, and spot welding are often employed. In particular, nickel-titanium alloys are particularly poor in bonding to other metal parts, whether they are the same or different, and because they are not bonded by these methods, nickel-plated on the surface of the alloy and brazed through it Has been devised. However, when these joining methods by heating are used, a so-called "dulling" phenomenon (a phenomenon in which the metal structure becomes hard and brittle) usually occurs in metal parts such as temples and hinge pieces. For example, if the nickel-titanium alloy becomes dull, the shape memory and superelastic properties unique to the alloy will be lost,
As the glasses are repeatedly attached and detached, there is a problem that the temples cannot be returned with the temples spread outward. Further, if the hinge piece is dull, the top portion is easily deformed, and the engagement of the hinge is deteriorated. In an extreme case, the top portion is cracked. Actually, when the hardness (unit: Hv) of the hinge piece and the like is measured by a Vickers hardness meter (see FIG. 14), each part (X, Y, Z) is compared with the hardness before brazing.
It can be seen that the hardness after brazing becomes weaker (X, Y, and Z are all made of a titanium alloy). The effect of the dulling becomes greater as the temples and hinge pieces become thinner. for that reason,
In order to avoid such a situation, various techniques have been devised to reduce the influence of dullness by increasing the thickness of the temple and increasing the thickness of the hinge portion. However, when manufacturing eyeglasses,
The design is strongly restricted. Also, as shown in FIG. 15, when the tip of the temple is made thicker,
Only the shaded area A becomes dull, and at least the shape memory property and superelastic property of the area B are not lost. However, only the region B of the temple, that is, the region closer to the face of the spectacle wearer bends outward, which has a drawback of giving the wearer a strong tightening feeling. That is, despite the fact that various metal materials have been developed as described above, if the conventional method that relies on heating for joining is used, the superior properties of the metal material are lost. If you try to avoid it, you have to sacrifice design freedom. Therefore, in order to solve these problems, it is absolutely necessary to develop a new joining method without heating. [0010] As a joining method based on such an idea, a method based on a so-called sparta method, that is, a method of processing a tip portion of a temple and forming it into a top portion has been known. However, this method is not necessarily a preferable method because the design is limited and such processing is considerably troublesome with a very hard nickel-titanium alloy. SUMMARY OF THE INVENTION The present invention has been made in order to overcome the above-mentioned problems in the background. That is, an object of the present invention is to provide an attachment structure and an attachment method of a hinge piece and a frame member that can securely attach a separate hinge piece and a frame member without using a joining method involving heating such as brazing. It is to be. In addition, an object of the present invention is to provide an attachment structure and an attachment method between a hinge piece and a frame member that can correspond to any design. [0012] Thus, the present inventor has provided:
As a result of intensive research on such a background,
A leg is provided on the hinge piece, and the leg is inserted into the recess formed in the frame member (that is, the temple or the bracket). It has been found that the hinge piece and the frame member can be securely connected by joining the legs in a so-called special caulking structure in which the legs are plastically deformed by pressurization and are engaged so as to embrace the recesses, The present invention has been completed based on this finding. That is, the present invention provides (1) an attachment structure of a hinge piece and a frame member, wherein the hinge piece has
The head and legs are formed and penetrate the frame member
The recesses are formed, the legs form a and咬止portion packed with recesses through the through by plastic deformation in a state of being inserted into the recess <br/> through the through, 該咬stop portion and the hinge With one head
Exist in the mounting structure of the hinge member and the frame member, which are fixedly engaged by sandwiching the frame member. [0014] (2) An attachment structure between the hinge piece and the frame member, wherein the hinge piece has a leg portion, and a concave portion is formed on both side surfaces of the frame member, and the leg portion holds the frame member. In this state, the concave portion is filled by plastic deformation and the engaging portion is formed to form an engaging portion. Further, ( 3 ) the frame member has an attachment structure of a hinge piece which is a temple or a bracket made of a nickel-titanium alloy and a frame member. Further, ( 4 ) the eyeglasses are provided with a structure for mounting the hinge piece and the frame member. [0017] And also, (5), a method of mounting the hinge piece and the frame member, and penetrates the frame member
Forming a concave portion, and forming the concave portion by applying pressure.
And the legs of the inserted hinge piece in the recess by plastically deforming the through
Through the and is filled in the recess to form a咬止portion 該咬stop portion and heat
And an occlusal fixing step of occlusally fixing the frame member by sandwiching the frame member with the head of the hinge piece. ( 6 ) A method of attaching a hinge piece to a frame member, wherein the step of forming a recess in the frame member includes the steps of: An occlusal fixing step of plastically deforming and filling the recess and forming an occluding portion to occlusally fix;
A method of mounting a hinge piece and a frame member, comprising a head forming step of forming a head of the hinge piece material to form a hinge piece. If the present invention meets this objective,
Of course, a configuration in which two or more selected from the above 1 to 3 and a combination of 5 and 6 can also be adopted. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a mounting structure and a mounting method of the present invention will be described with reference to some preferred embodiments with reference to the drawings. . In the following embodiments, a case where the frame member is a temple will be described, but it goes without saying that a case where the frame member is a bracket (also known as “chi”) can be similarly described. [First Embodiment] The feature of the mounting structure of the present invention is that the legs formed on the hinge pieces are plastically deformed by pressurization, filling the concave portions provided on the temple, and the engaging portions are formed. This is a structure that is formed so as to be engaged and fixed to the frame member. With such a so-called caulking structure, the hinge piece and the temple are securely connected and fixed. One form of the hinge piece and the temple joined by such a structure is shown in a schematic sectional view in FIG.
In this embodiment, the leg 5 of the hinge piece 1a is plastically deformed to fill the penetrating concave portion 6 formed in the temple 3, and the leg 5 is formed by the plastically deformed biting portion 7 and the hinge. The head 8 of one piece is occlusally fixed by sandwiching the temple 3. That is, in the mounting structure according to the present invention, the legs of the hinge pieces fill the concave portions of the temple to prevent displacement in the front, rear, left and right directions, and the biting portion and the head pinch the temple. With this, the escape in the vertical direction is prevented. Therefore, there is no need for brazing or the like accompanied by heating, and no dulling occurs, so that the characteristics and strength of the metal component can be utilized as it is, and the top portion can be made thinner or thicker. Further, by adjusting the length of the legs of the hinge piece, there is an advantage that the temple can flexibly cope with a thin or thick temple. That is, with the mounting structure of the present invention, eyeglasses of any design can be manufactured freely. [Mounting Method 1] Next, several examples of a method of mounting the hinge piece and the temple to the above structure will be described. The first method is a method in which a hinge piece having a head portion formed in advance and a leg portion formed therein is inserted into a concave portion formed in the temple and fixedly engaged with the temple. First, a hinge piece having a head formed and legs formed is prepared. FIG. 2 is a perspective view showing an example of forming a hinge piece in which a head is previously formed and a leg is formed. The head 8 (including the top 2) and the leg 5 of the hinge piece 1a may be formed by ordinary cutting and punching, and the length of the leg 5 is fixed by occlusal as described above. Set according to the temple thickness. Next, a concave portion penetrating the temple is formed (recess forming step). Also in this case, a penetrating concave portion (hole) may be formed by a method such as punching using a commonly used punching die. Finally, the leg portion of the hinge piece formed in this manner is fixedly engaged with the penetrated concave portion of the temple (occlusally fixing step). 3 to 5 are views showing the process of occlusal fixation. 3 shows a state before the legs of the hinge piece are inserted into the concave portion of the temple, FIG. 4 shows a process of engaging the hinge piece with the temple by a press die, and FIG. 5 is an enlarged view below the same. First, the leg 5 of the hinge piece 1a is
In a state of being inserted into the recess 6 penetrated (see FIG. 3), they are placed on a press die and pressurized to engage (see FIGS. 4 and 5). That is, the hinge piece 1a inserted into the recess 6 penetrated by the temple 3 is placed on the lower mold (anvil) 9, and the upper mold 11
Press with Then, the leg portion 5 of the hinge piece 1a fills the concave portion 6 penetrated by the temple 3 while being plastically deformed by pressurization, and engages with the engaging portion according to the concave portion 12 formed in the lower mold 9 in advance. 7 is formed. Thus, the attachment of the hinge piece and the temple is completed. Incidentally, if the concaves and convexes serving as the pattern are formed in the recess 12, the pattern can be copied on the surface including the engaging portion 7. Also, it is naturally possible to make the portion including the engaging portion 7 larger or to form a decoration or the like. In this case, if a material which is easily forged is used for the hinge piece, it is possible to form a decorative portion having a large step with decorativeness on a temple material such as a nickel-titanium alloy which is difficult to form and has no pattern. . [Attachment Method 2] Another method of attaching the hinge piece and the temple is to insert the legs of the hinge piece material into the concave portions of the temple, fix the bite, and then form the head of the hinge piece material. This is a method of forming hinge pieces. First, a hinge piece material is prepared. In FIG.
An example of a hinge piece material is shown. Thus, the hinge piece material 13
Is a leg 1 having a shape that can be easily filled into the concave portion of the temple.
4 and a head 1 having a shape easily processed into a predetermined hinge piece
5 The following steps are the same as those in the first mounting method: a recess forming step for forming a recess penetrating the temple, and an occlusal fixing step for engaging the leg of the hinge piece material with the recess penetrating the temple by applying pressure. FIG. 7 is a cross-sectional view of a hinge piece material in which a biting portion is formed on the leg and bite-fixed to the temple (here, FIG. 6 (B) shows a case where bite-fixing is performed). As described above, the leg portion 14 of the hinge piece material 13 is plastically deformed by the pressurization and fills the penetrating concave portion 6 of the temple 3 to form the engaging portion 16. This biting part 16 and the head 1
5 sandwiches the temple 3. Finally, the head 1 of the hinge piece material 13
5 is processed into a required shape such as a top part by cutting or cold forging (including punching and the like) and formed into a hinge piece as shown in FIG. 1 (head forming step). Thus, the attachment of the hinge piece and the temple is completed. Now, for reference, advantages of the case where the method 2 is adopted will be described in comparison with the above method 1. In the method 1, the die has a complicated shape because the top of the hinge piece must not be crushed at the time of pressing, but the method 2 does not need to do so. Rather, since the pressure is applied to the entire hinge piece material at the time of press-fitting, the metal structure of the hinge piece material is strengthened. Therefore, it is possible to make the hinge piece and especially the top part more resistant to deformation due to external force and more difficult to break. As described above, the method 1 and the method 2 are described for the case of forming the first embodiment, but it is needless to say that the method 1 and the method 2 can be applied to the formation of the following embodiments. [Second Embodiment] In the first embodiment, the case where a penetrating concave portion is formed as the temple-side concave portion has been described. Of course, it is also possible to use a concave portion at the bottom. FIG. 8 is a diagram showing an example of a temple having a concave portion with a bottom. The concave part of the temple 3 is the concave part 1 with the bottom.
In the case of 7, since the leg of the hinge piece cannot form the biting portion simply by forming the recess, it is preferable that the wide portion 18 is formed by widening the bottom of the concave portion 17 having the bottom. According to this structure, the legs of the hinge piece plastically deformed by press-fitting can fill the recessed part 17 with the bottom and also fill the wide part 18 to form the engaging part. And the temple are firmly occlusally fixed. Here, as the concave portion having a bottom, the cross-sectional shape is a convex shape (inverted T).
Shape), but the cross section is trapezoidal, cross-shaped,
There is no particular limitation as long as the legs of the press-fitted hinge piece can form the engaging portion, such as a polygonal shape. [Third Embodiment] In this embodiment, a case will be described in which a bottomed concave portion is formed so as to be open at a mouth portion at the tip of a temple. FIG. 9 is a diagram illustrating an example of a temple having such a bottomed concave portion. Also in this case, as in the second embodiment, it is preferable to form the wide portion 18 at the bottom of the concave portion 17 having the bottom. In this case, since the hinge piece may come off in the longitudinal direction of the temple (that is, from the abutment), a retaining groove 19 may be formed at the bottom of the bottomed recess 17. preferable. The state in which the leg portion of the hinge piece is plastically deformed by press-fitting and is fixedly engaged with the concave portion with the bottom of the temple is the same as in the second embodiment. [Fourth Embodiment] Next, according to the mounting structure of the present invention, the legs of the hinge piece are plastically deformed in a state of holding the temple, thereby filling the concave portion and forming the engaging portion. It is also possible to form and occlusally fix. FIG.
It is a perspective view which shows the example of the hinge piece which is occlusally fixed so that a temple may be held. The leg portion 20 of the hinge piece 1a fills the concave portion of the temple 3 (the concave portion 22 in FIG. 11), and the leg portion 20 is bent while being pressed against the temple 3 to form the engaging portion 21. Here, similarly to the above-described embodiment, the legs of the hinge pieces fill the concave portions of the temple to prevent displacement between the front and rear and left and right, and the locking portion and the head sandwich the temple to prevent the temple from falling off in the vertical direction. Prevent it. The mounting method for forming such a structure can be performed in the same manner as in the above-mentioned methods 1 and 2. Here, as in the case of the method 1, a method of attaching a hinge piece having a leg with a head formed in advance to a temple will be described. FIG. 11 is a diagram showing a process of attaching the hinge piece to the temple. A top part 2 is formed at the head of the hinge piece 1a, and two legs 2 are formed below the hinge piece 1a.
0 is formed in advance. Further, two concave portions 22 are formed on both side surfaces of the temple 3 so that the leg portions 20 of the hinge pieces can be fitted exactly (recess forming process). Next, the leg portion 20 of the hinge piece fitted into the concave portion 22 of the temple 3 is plastically deformed by pressurization, and is bent while filling the concave portion 22 and further pressing the lower end thereof to the temple 3. The occlusal portion 21 is formed by occlusal fixation so as to embrace the temple 3 (occlusal fixation step). On the other hand, as in the above-mentioned method 2, a hinge piece material having two legs is bite-fixed to recesses formed on both sides of the temple, and then the head of the hinge piece material is formed to form a top part. Of course, it is also possible to form such. [Eyeglass with mounting structure of the present invention] As described above, according to the mounting structure of the present invention (so-called caulking structure), the joining between the hinge piece and the frame member is heated by brazing or the like. Is no longer necessary. For this reason, as described above, the problem of cracking of the hinge piece and the like can be solved, and if the above-described method 2 is adopted, the effect of forging is added, so that the hinge piece can be strengthened. Here, only another advantage of using the mounting method of the present invention will be described. As described above, in the conventional joining method by brazing, the nickel-titanium alloy becomes dull, loses shape memory properties and superelastic properties,
In some cases, the temples could not be returned while spreading outside. For this reason, in the related art, such a disadvantage is avoided by thickening the temple region where the hinge piece becomes blunt due to the brazing of the hinge piece, but this method gives a strong sense of tightening to the spectacle wearer ( See FIG. 14). For it,
In the mounting method of the present invention, the temple does not need to be thickened at all, and the curve starts in a region near the hinge piece, that is, a portion farther from the face, so that such a feeling of tightening can be avoided. FIG. 12 shows the mounting method (structure) of the present invention.
Shows an example of a temple to which hinge pieces are attached. In the present invention, the temple 3 can be made thinner, and the region B of the temple 3 can be made wider than that of the conventional temple. Accordingly, since the temple 3 starts to bend outward from a region closer to the hinge piece, that is, a portion farther from the wearer's face, the characteristics of nickel / titanium are utilized to fit the face without giving a feeling of tightening. You do it. According to the mounting structure (method) of the present invention, as described above, the disadvantage of the dulling of the metal due to heating can be avoided, so that it is possible to take a delicate temple form that has not existed conventionally. Although the present invention has been described above, the present invention is not limited to the embodiment, and it goes without saying that various other modifications can be made without departing from the essence of the present invention. For example, in the above embodiment, the description has been made on the assumption that the hinge piece is made of a titanium alloy and the frame member (temple or bracket) is made of a nickel-titanium alloy. is not. The present invention can naturally be applied not only to the case where the hinge piece is one sesame but also to the case where the hinge piece is two sesame. Moreover, not only the attachment of the hinge piece and the frame member (temple or bracket),
The present invention is also applicable to the connection between other frame members. According to the present invention, the hinge piece and the frame member can be securely attached without using a joining method involving heating such as brazing. In addition, it is possible to provide an attachment structure and an attachment method that can correspond to any design of glasses.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic cross-sectional view showing a state in which a leg portion of a hinge piece is engaged with a concave portion of a temple, (A) is a side view, and (B) is a side view. It is the figure seen from the tip direction of the temple. FIG. 2 is a perspective view showing an example of forming a hinge piece having a leg. FIG. 3 is a view showing a process of inserting a leg portion of a hinge piece into a recess penetrating a temple. FIG. 4 is a schematic diagram showing a process of pressing a hinge piece with a press die. FIG. 5 is an enlarged view of the lower part of FIG. 4; FIGS. 6A and 6B are diagrams each showing an example of the shape of a hinge piece material; FIG. FIG. 7 is a cross-sectional view of the hinge piece material in a state of being occlusally fixed to the temple. FIGS. 8A and 8B are diagrams showing an example of a temple having a bottomed concave portion, wherein FIG. 8A is a view seen from above, and FIG.
It is X sectional drawing. FIG. 9 is a diagram showing an example of a temple having a bottomed concave portion opened at an abutment portion, where (A) is a view as viewed from above, and (B) is a cross-sectional view along XX. is there. FIG. 10 is a perspective view showing an example of a hinge piece that is occlusally fixed so as to embrace a temple. FIG. 11 is a diagram showing a process of attaching a hinge piece to a temple. FIG. 12 is a view showing a temple to which hinge pieces are attached by the attachment method (structure) of the present invention. FIG. 13 is a view showing a conventional example in which a hinge piece is joined to a temple or a bracket. FIG. 14 is a diagram showing measurement points (A) and measurement results (B) in a hardness measurement experiment using a Vickers hardness tester. FIG. 15 is a diagram showing a temple to which hinge pieces are joined by conventional brazing. [Description of Signs] 1 ... Hinges 1a ... Hinges 1b ... Hinges 2 ... Tops 3 ... Temples 4 ... Brackets 5 ... Legs 6 ... Penetrated recesses 7 ... Lengths 8 ... Heads 9 ... Lower molds 10 ... Back mold 11 Upper mold 12 Depressed part 13 Hinge piece material 14 Leg 15 Head 16 Claw 17 Depressed recess 18 Wide section 19 Retaining groove 20 Leg 21 Claw Stop 22: recess

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-6-34921 (JP, A) JP-A-9-311299 (JP, A) Japanese Patent Publication No. Sho 42-7901 (JP, B1) 14527 (JP, Y1) Registered utility model 3003406 (JP, U) Registered utility model 3042330 (JP, U) Registered utility model 368856 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) G02C 5/14 G02C 5/00 G02C 5/22

Claims (1)

(57) [Claims] [Claim 1] How to attach a hinge piece to a frame member
Forming a recess in a frame member
And the leg of the hinge piece material inserted into the recess by pressure.
Is plastically deformed to fill the concave portion and form a locking portion.
Occlusal fixing step of occlusally fixing the head of the hinge piece material
Head forming step of forming a hinge part by forming a part.
How to attach hinge piece and frame member
Law.