JPH0634921A - Method for fixing ornamental member of spectacle frame - Google Patents

Abstract

PURPOSE:To securely fix an ornamental member and to form the fixing part of this ornamental member so as to have an integral feeling in appearance with the periphery thereof at the time of fixing the ornamental member into a through-hole provided in a constituting member. CONSTITUTION:The part around at least the through-hole forming part of the constituting member mounted with the ornamental member 7 in the through-hole 2 is housed into a mold 12. The opposite flanks of the part of the constituting member existing in a mold 12 are held restrained to the mold 12. Projecting parts 23, 25 at both ends of the ornamental member 7 projecting from expanded holes 5, 6 constituting both ends of the through-hole 2 in this restrained state are crimped in opposite directions including the peripheral parts at the opening ends of the expanded holes 5, 6. The expanded holes 5, 6 are packed with the material constituting the ornamental member 7 by the plastic deformation arising from this crimping.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative member fixing method for fixing a decorative member to a through hole provided in a required portion of a metallic component member of an eyeglass frame.

[0002]

2. Description of the Related Art As a conventional main fixing means for fixing another decorative member by fitting it into a concave portion provided in the surface portion of a metallic component member (for example, a temple made of metal) of an eyeglass frame, (1)
A caulking prevention means that inserts a protruding part protruding from the back surface of the decorative member into a through hole provided in the bottom surface of the recess and fixes it by caulking the tip, (2) A screw shaft protruding from the rear surface of the decorative member Generally, a screwing means for inserting the above into the insertion hole provided on the bottom surface of the recess and fixing with a nut on the back side, and (3) an adhesive means for adhering the decorative member to the bottom surface of the recess are used.

[0003]

However, the above-mentioned conventional fixing means have the following problems. That is, when the caulking prevention means or the screwing means is used, the caulking force may be weakened or the screw may be loosened so that the fixed portion may be rattled. There was a fear. Further, since it is difficult to bring the edge of the decorative member and the edge of the recess into close contact with each other, a gap is created between both edges, so that the temple and the decorative member do not have a single appearance and the decorative portion looks good. I had a bad problem.

Further, there is a risk of peeling off by the adhesive means, so that it is impossible to secure the fixing securely. When fixing multiple decorative members to one component,
Since it is necessary to fix each decorative member using the fixing means, there is a problem that a lot of labor is required as a whole, work efficiency is poor, and cost is increased. An object of the present invention is to provide a method for fixing a decorative member that can solve such problems.

[0005]

To solve the above problems, the present invention employs the following means. That is, a method of fixing a decorative member in an eyeglass frame according to the present invention (hereinafter referred to as a fixing method) is performed by using a decorative member 7 in a through hole 2 provided in a required portion of a metal component member (temple, bridge, eyebrow, etc.) 1 of the eyeglass frame. And a through hole 2 of the component is
Enlargement holes 5 and 6 for enlarging both end portions through the step 3.
Then, in a state where both end portions of the decorative member 7 inserted into the through hole 2 project from the front and back surfaces of the constituent member, at least a portion centering on the through hole forming portion of the constituent member 1 is placed in the mold 12. Pay. Then, with the opposing side surfaces 19, 19 of the portion of the constituent member existing in the mold being restrained by the mold, the projecting portions 23, 25 at both ends of the decorative member are provided around the opening ends of the enlarged holes 5, 6. Apply strong pressure in the opposite direction including the part,
The expansion hole is filled with a material forming the decorative member by plastic deformation accompanied by the strong pressure.

As the decorative member 7, a head 10 having an engaging portion capable of abutting the step of one of the enlarged holes and projecting a required length from the open end of the enlarged hole is passed through the through hole and the other portion. It is preferable to use the leg portion 11 projecting from the opening end of the enlarged hole by a required length.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1a is a metallic component member 1 of a spectacle frame.
It is a core alloy for a temple made of a titanium alloy, which is an example, and has a rectangular through hole 2. The through hole 2 has a rectangular enlarged hole 5 whose both ends are enlarged through the step 3.
It is supposed to be 6.

Reference numeral 7 indicates a decorative member made of a material different from that of the temple core bar, for example, a decorative member made of 18-karat gold. The decorative member 7 has an inner peripheral edge portion 9 which can contact the step 3 of the enlarged hole 5 on the front side of the temple, and the enlarged hole 5
Head 1 in the shape of a rectangular parallelepiped protruding slightly outward from the open end of the
No. 0 is provided with a leg portion 11 which penetrates the through hole 2 and protrudes slightly from the open end of the enlarged hole 6 on the back side. The length by which the head portion 10 projects from the open end of the enlarged hole 5 and the length by which the leg portion 11 projects from the open end of the enlarged hole 6 are, when the projecting portion is pressed as described later, It is set so that the enlarged holes 5 and 6 are filled with the plastically deformed protruding portions.

Further, in FIG. 2, reference numeral 12 denotes a die, which is a lower die 15 having an accommodating recess 13 for accommodating the core metal 1a on which the decorative member 7 is mounted, and a fitting state in the accommodating recess 13. It comprises an upper die 17 having a pushing portion 16 capable of penetrating into. The groove width of the accommodating recess is such that both side surfaces 19, 19 of the core metal 1 a are opposite side wall surfaces 20, 2 of the accommodating recess 13.
It is set so as to be substantially in contact with 0.

In order to fix the decorative member 7 to the core metal 1a, however, the head 10 of the decorative member 7 is placed in the enlarged hole 5 on the front side, and the tip portions of the legs 11 are projected from the open ends of the enlarged holes 6 on the back side. The core metal 1a on which the decorative member is mounted in this manner is attached to the lower mold 1
5 is stored in the accommodation recess 13. After that, the pushing part 1 of the upper die 17
6 into the accommodating recess 13, and the protruding portions 23 and 25 at both ends of the decorative member 7 are provided between the lower surface 21 of the pressing portion and the bottom surface 22 of the accommodating recess to surround the opening ends of the enlarged holes 5 and 6. 26,
The pressure including 27 is applied in the opposite direction.

This strong pressure is due to the opposing side surfaces 19, 1 of the temple.
9 is regulated by the opposing side wall surfaces 20 and 20 of the accommodating recess, the inner peripheral surface 29 of the enlarged hole and the outer peripheral surface 30 of the filling portion are pressed against each other by the plastic deformation of the protruding portions 23 and 25, As shown in FIG. 3, the enlarged holes 5 and 6 are densely filled with the material forming the decorative member. Further, the filling portion 31 is engaged with the step 3 of the enlarged hole, and the decorative member 7 is securely fixed to the through hole 2 of the core metal 1a (FIGS.
4).

FIG. 5 shows a case where the decorative member 7 is slightly bulged and fixed to the surface side of the core metal 1a. To fix in this way, as shown in FIG. 6, the head 10 is set to be relatively large, and as the lower mold 15, a recess 32 conforming to the shape of this bulge is provided at the bottom of the accommodating recess. In the same manner as described above, the projecting portions 23 and 25 at both ends of the decorative member are replaced with the peripheral portions 26 and 2 at the open end of the enlarged hole.
Then, the sheet including 7 is strongly pressed and fixed in the opposite direction (FIG. 7).

8 to 9 illustrate another mode of mounting the decorative member 7 in the through hole 2 of the component member 1. The decorative member 7 is formed in a rod shape, and its central portion is formed. The decorative member is press-fitted into the through hole 2 and both end portions of the decorative member are projected from the front and back surfaces of the constituent member by a required length.
Then, in the same manner as described above, the protruding portions 2 at both ends of the decorative member
3, 25, including the peripheral portions 26, 27 at the open ends of the enlarged holes, are strongly pressed and fixed in opposite directions (FIG. 9).

In FIG. 10, the decorative member 7 is provided on one constituent member 1.
FIG. 9 is a cross-sectional view showing a case where a plurality of the decorative members are fixed, and all the decorative members are fixed at one time by one pressing process in the same manner as described above.

The cross-sectional shape of the other constituent members is not limited to a rectangular shape, and various shapes such as those having a curved surface shown in FIG. 8 can be used. Further, the form of the decorative member 7 can be set to various forms such as those shown in FIGS. Also, the step 3 of the enlarged hole
Does not need to be provided all around the enlarged hole,
It may be partially provided.

[0016]

As described above, according to the present invention, at least a portion of a constituent member having a decorative member mounted in the through hole is centered in the through hole forming portion, and the portion of the constituent member existing in the mold faces each other. With the side surfaces being restrained by the mold, the projecting portions at both ends of the decorative member projecting from the enlarged holes forming both end portions of the through hole are strongly pressed in the opposite direction including the peripheral portion of the opening end of the enlarged hole, A configuration is adopted in which the enlarged hole is filled with the material forming the decorative member by plastic deformation due to strong pressure.

Therefore, the decorative member and the constituent member can be integrated with the filling portion and the step engaged with each other, and there is a risk that the fixing portion of the decorative member may rattle or the decorative member may fall off as in the conventional case. Absent. In addition, since the enlarged hole can be closely filled with the material forming the decorative member, a gap is not formed around the decorative member as in the conventional case, and the fixed portion of the decorative member does not appear to be the same in appearance as the surrounding. The appearance can be finished in a good appearance and the design effect can be improved.

Since the present invention is constructed as described above,
Even when a plurality of decorative members are fixed to one constituent member, all the decorative members are removed by one pressing process.
It becomes possible to fix it every time. Therefore, the workability can be remarkably improved and the cost can be reduced as compared with the conventional fixing method which requires fixing work for each decorative member.

Particularly, as a decorative member, a head having an engaging portion capable of abutting the step of one of the enlarged holes and projecting a required length from the opening end of the enlarged hole penetrates the through hole and penetrates the other enlarged hole. When a leg portion projecting a required length from the opening end of the decorative member is used, the decorative member is naturally correctly positioned and attached to the component member by the engaging portion contacting the step. Further, when the pressure in the mold is high, the decorative members mounted in the through holes are in a positionally fixed state, so that the protruding portions at both ends of the decorative member protruding from the enlarged holes forming both end portions of the through holes are appropriately plastic. It deforms and fills the enlarged hole. From the above, it is possible to improve the manufacturing efficiency and obtain a product with excellent quality.

[Brief description of drawings]

FIG. 1 is a perspective view illustrating a constituent member and a decorative member fixed to the constituent member.

FIG. 2 is a cross-sectional view showing a state in which a constituent member having a decorative member mounted therein is housed in a mold.

FIG. 3 is a cross-sectional view showing a state in which projecting portions at both ends of the decorative member are clamped in opposite directions.

FIG. 4 is a perspective view illustrating a cored bar to which a decorative member is fixed.

FIG. 5 is a perspective view illustrating another fixing mode of the decorative member.

[Fig. 6] When fixing the decorative member as shown in Fig. 5,
It is sectional drawing which shows the state which accommodated the core metal with which the decoration member was mounted in the metal mold | die.

FIG. 7 is a cross-sectional view showing a state where projecting portions at both ends of the decorative member shown in FIG. 6 are pressed in opposite directions.

FIG. 8 is a cross-sectional view showing a state in which a decorative member having a rod-shaped decorative member mounted therein is housed in a mold.

9 is a cross-sectional view showing a state in which protruding portions at both ends of the decorative member shown in FIG. 8 are pressed in opposite directions.

FIG. 10 is a cross-sectional view illustrating a component member to which a plurality of decorative members are fixed.

FIG. 11 is an explanatory diagram illustrating another form of the decorative member.

FIG. 12 is an explanatory diagram illustrating another form of the decorative member.

[Explanation of reference numerals] 1 constituent member 2 through hole 3 step 5 enlarged hole 6 enlarged hole 7 decorative member 10 head 11 leg 12 mold 19 side 23 protruding portion 25 protruding portion

Claims (2)

[Claims] 1. A fixing method for a decorative member, comprising fixing a decorative member 7 to a through hole 2 provided at a required portion of a metallic component member 1 of an eyeglass frame, wherein the through hole 2 of the component member has both end portions thereof. Are enlarged holes 5 and 6 which are enlarged through the step 3, and both end portions of the decorative member 7 inserted into the through hole 2 are at least the portions of the constituent member 1 centered on the through hole forming portion. Of the constituent members which are housed in the mold 12 in a state of protruding from the front and back surfaces of
With 19 being restrained by the mold, the projecting portions 23 and 25 at both ends of the decorative member are strongly pressed in the opposite direction including the peripheral portions of the opening ends of the enlarged holes 5 and 6, and the plastic deformation is caused by the strong pressure. A method for fixing a decorative member in an eyeglass frame, which comprises filling the enlarged hole with a material forming the decorative member. 2. A head member 10 having an engaging portion capable of abutting the step of one of the enlarged holes as the decorative member 7 and projecting a required length from the opening end of the enlarged hole, penetrates the through hole and passes through the other portion. The method for fixing a decorative member in an eyeglass frame according to claim 1, wherein a leg portion 11 that projects a required length from the opening end of the enlarged hole is used.