JPH07181432A - Production of rimless spectacles, production of lens connecting parts for rimless spectacle frame, production of temple connecting parts for rimless spectacle frame and rimless spectacle frame - Google Patents

Abstract

PURPOSE:To provide rimless spectacles consisting of lightweight and compact parts considering optical safety in a use state without requiring brazing by forming lens connecting parts and temple connecting parts by pressing of metallic sheets. CONSTITUTION:The lens connecting parts 3 for connecting and holding spectacle lenses 2 are formed by pressing of the thin metallic sheets. The lens connecting parts 3 integrally have a bridge part 10, lens retaining mitre parts 11A, 11B, pad arm parts 12A, 12B and lens mounting stay parts 14A, 14B. The temple connecting parts 4A, 4B holding the outer edges of the spectacle lenses 2 are formed by pressing of the thin metallic sheets in the same manner as for the lens connecting parts 3. The temple connecting parts 4A, 4B respectively integrally have wraparound endpiece parts 21, lens retaining mitre parts 22 and lens mounting stay parts 24. Temples 5 are connected via hinges 6 to the rear ends of the wraparound endpiece parts 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for manufacturing rimless glasses,
The present invention relates to a method for manufacturing inter-lens connecting components for rimless spectacle frames, a method for manufacturing temple connecting components for rimless spectacle frames, and rimless spectacles.

[0002]

2. Description of the Related Art A method for manufacturing a rimless spectacle frame, which is generally called two-point, is disclosed in, for example, JP-A-63-63.
As disclosed in Japanese Patent No. 185420, each frame component element is die-forged and brazed to form one component, and then the component is joined to a predetermined prescription lens to assemble eyeglasses. ing.

[0003]

However, in the above method for joining components by brazing, a high temperature is applied to a part of the metal to cause coarsening of the metal crystal and the metal is softened. A strength design that takes into account was necessary. Also, in a two-point frame, the parts themselves become large because of the need for inter-part strength for brazing,
For example, there was a limit to the structure of parts to make a slender frame. Therefore, there is a problem that it is difficult to make the parts themselves compact and lightweight.

However, the spectacle frames including the two-point frame up to now have been designed mainly on the strength of parts only as a frame, and the strength balance of the spectacles as a whole in the state where the spectacle lenses are combined, the nose and the ear. No attention has been paid to the stability of the optical surface in the wearing state supported by the above, and the design of the parts of the spectacle frame, the selection of the material, etc. were only an extension of such a situation.

Therefore, the present invention has been made to solve the above problems, and an object thereof is to make a lightweight and compact edge which does not require brazing and which takes into consideration the stability of an optical surface in a worn state. An object of the present invention is to provide a method for manufacturing rimless spectacles composed of parts of a rimless spectacle frame, a method for manufacturing an inter-lens coupling component for a rimless spectacle frame, a method for manufacturing a temple coupling component for a rimless spectacle frame, and rimless spectacles.

[0006]

In order to achieve the above object, a method of manufacturing rimless spectacles according to the present invention is provided with a bridge, which is formed in advance between two spectacle lenses, and the bridge. A process of punching a metal plate of a required thickness based on the development pattern of the inter-lens connection part having a shape in which the respective element parts of the pad arm, the lens mounting stay, and the lens pressing claw are integrated to produce a lens connection intermediate product. , A step of manufacturing the inter-lens connection parts by molding the bridge portion, the pad arm portion, the lens mounting stay portion, and the lens pressing claw portion of the lens coupling intermediate product into desired shapes by press working, respectively. , A shape of an end piece that is arranged between the eyeglass lens and the temple, and a lens mounting stay and a lens holding claw provided on the end piece that are integrated with each other. A process of punching out a metal plate having a required plate thickness based on the development pattern of the temple connecting parts to manufacture two temple connecting intermediate products, and each of the end pieces of the temple connecting intermediate product, the lens mounting stays, and the lens pressing claws. Of the two parts of the left and right symmetrical temple connecting parts by forming the parts into a desired shape by press working, and two pieces of the lens connecting parts and the temple connecting parts manufactured by the above-mentioned step, which are preliminarily edged. And a step of assembling the spectacle lens.

Further, the method for manufacturing the inter-lens coupling component for the rimless spectacle frame according to the present invention includes a prefabricated bridge arranged between two spectacle lenses, a pad arm provided on the bridge, and a lens. A process of punching a metal plate with a required plate thickness based on the development pattern of the inter-lens connection part in which the parts of the mounting stay and the lens retainer tab are integrated, and manufacturing a lens connection intermediate product, and this lens connection Bending the bridge portion of the intermediate product into a substantially U shape and adjusting the pad arm portion to a predetermined bending position,
The lens attachment stay part of the intermediate lens connection product is approximately 90 °
The method further comprises a step of bending outward and a step of bending the lens pressing claw portion of the lens coupling intermediate product into an arc shape.

Further, in the method for manufacturing a temple connecting component for a rimless spectacle frame according to the present invention, a preliminarily-made end piece arranged between the eyeglass lens and the temple, and a lens mounting stay provided on the end piece. And the process of punching out the metal plate with the required plate thickness based on the development figure of the temple connecting part of the shape in which the lens pressing claws are integrated to manufacture the temple connecting intermediate product, and the lens mounting stay part of this temple connecting intermediate product. The step of bending the tip into a substantially V shape, the step of bending the lens holding claw portion of the temple-connected intermediate product into an arc shape, and the step of bending the end portion of the temple-connected intermediate product with a curved surface R (R) to approximately 180 ° And a step of bending to the outside.

Further, the rimless spectacles according to the present invention are made by press-forming a metal plate and two spectacle lenses which are edged into a desired shape, thereby connecting the two spectacle lenses. Inter-lens coupling component integrally having a bridge portion, a pad arm portion to which a pad is attached, a lens attachment stay portion to which a spectacle lens is fixed, and a lens pressing claw portion that also holds the nose side edge portion of the spectacle lens. And two temple connections integrally formed with a metal plate by press-working to provide an end portion, a lens mounting stay to which the spectacle lens is fixed, and a lens pressing claw portion that also holds the temple side edge surface of the spectacle lens. And parts.

[0010]

In the present invention, the inter-lens connecting component is formed by pressing a metal plate to form a bridge, a pad arm, and a bridge arm for connecting two spectacle lenses.
It has a shape in which the component elements of the lens mounting stay and the lens retainer are integrated. The temple connecting component is also formed by pressing a metal plate, and has a shape in which the component elements of the armature, the lens mounting stay, and the lens pressing claw to which the temple is coupled are integrated. Since there is no brazing process for manufacturing these connecting parts,
It does not require a strength design that takes into account the softening of the metal that occurs during brazing, and constitutes a lightweight, compact composite part. Further, the press working is much more mass-producible than the die forging and brazing, and the plating adhesion is excellent.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the drawings. FIG. 1 is an external perspective view showing an embodiment of rimless spectacles manufactured by the manufacturing method according to the present invention. First, the structure of the rimless spectacles according to the present invention will be described with reference to FIG. 1.
A pair of left and right eyeglass lenses 2 that have been edged
(2A, 2B), an inter-lens coupling component 3 for coupling and holding these spectacle lenses 2A, 2B, and each spectacle lens 2A,
Two temple connecting parts 4 (4A, 4B) consisting of a pair of left and right holding the outer edge of 2B, and the front ends thereof are connected to the left and right temple connecting parts 4 via hinges 6 so as to be openable and closable in the left and right directions, respectively. A temple cover 7 integrally provided at the end is composed of a pair of left and right temples 5 (5A, 5B) hooked on the ear of the wearer.

The spectacle lens 2 is formed in a predetermined shape from a commonly used lens material such as glass or resin. In the production of the lens 2, it is particularly preferable not to use the cast polymerization method, and the method disclosed in JP-A-1-275111.
It is preferable to manufacture with the injection molding method and the molding apparatus disclosed in JP-A-1-291915 and the like. Acrylic material (M
MA-Methylmethacrylate as the main component) makes it excellent in transparency and specific gravity, and especially injection-molded ones have excellent impact resistance, so the edge of the lens 2 is easy to chip Very advantageous for eyeglass frames.

The inter-lens connection part 3 for connecting and holding two such spectacle lenses 2 is formed by pressing a thin metal plate, and therefore, it has been conventionally manufactured and brazed separately. ， Lens presser claw,
The pad arm, the bridge portion 10 corresponding to the lens mounting stay, the lens pressing claw portion 11 (11A, 11B), the pad arm portion 12 (12A, 12B) and the lens mounting stay portion 14 (14A, 14B) are integrally formed. To be done. The lens pressing portion 11 is provided at both ends of the bridge 10 so as to be substantially orthogonal thereto, and the left and right eyeglass lenses 2A, 2B are provided.
Hold the nose side of each. The pad arm portion 12 is provided obliquely downward from both ends of the bridge portion 10, and the pad 13 is attached to the lower end. Similarly, the lens mounting stay portion 14 is extended to both ends of the bridge portion 10, and the vicinity of the rear nose side edge surface of the spectacle lenses 2A and 2B is fixed by screws 15 as connecting members.

The temple connecting part 4 for holding the outer edge of the spectacle lens 2 is formed by pressing a thin metal plate similarly to the interlens connecting part 3, so that the end part 21 and the front end of the end part 21 are formed. Eyeglass lens 2 provided in
Lens holding claw portion 22 that holds the temple side edge surface of the
And a lens mounting stay portion 24 fixed to a rear temple side edge surface of the spectacle lens 2 and fixed by a screw 23 as a connecting member. The temple 5 is connected to the rear end of 21 via a hinge 6. The left and right temple connecting parts 4A, 4B are formed in left-right symmetrical shapes, like the temples 5A, 5B. Further, in the conventional eyeglasses, the end portion 21 and the lens pressing claw portion 2
2 and the lens mounting stay portion 24 are manufactured as separate and independent parts and brazed.

As a material of the inter-lens connection component 3 and the temple connection component 4, a metal material preferable for press working, for example, a copper alloy system such as nickel silver, a nickel alloy system such as Monel, a stainless system, titanium or a titanium alloy. system,
Tool steel, phosphor bronze, etc. are used. Particularly preferred are nickel alloys, stainless steels, and tool steels, which have excellent spring properties. In addition, nickel alloys and stainless steels have excellent corrosion resistance and have a great deal of technical freedom regarding plating.

Among the tool steels, carbon tool steel, alloy tool steel,
High speed steel, die steel, forged die steel, blade steel and file steel can be used. In particular, this tool steel has a high hardness at room temperature and high temperature, is resistant to friction, is easy to heat-treat, and is good for surface treatment such as plating. It is necessary to have a suitable toughness, and to make a lightweight and compact frame part. Although this has not been paid attention in the eyeglass industry in the past, it has been found that the production method by press working is introduced and the component can sufficiently withstand the eyeglass frame strength. Among them, carbon tool steel (SK steel) is preferable, and JIS. In G4401, the carbon content of SK3 to SK7 in the range of 0.6% to 1.10% is particularly preferable. However, since the corrosion resistance is inferior to that of nickel alloy type or stainless type, it is preferable to apply a relatively thick plating of a plurality of layers.

The thickness of the metal plate is set depending on the intended function of the spectacle frame and is slightly affected by the frame material. For the purpose of the present invention, a metal plate having a thickness of 0.1 to 1.5 mm is used. To do. Particularly preferably 0.3 mm to 0.8
mm.

The inter-lens connecting part 3, the temple connecting part 4 and the temple 5 which are manufactured in a predetermined shape by press working (in the present invention, used as a broad term including general bending work) are plated. The plating process is
Single layer or multiple layers consisting of metal plating or alloy plating with a single metal selected from one or more metals such as nickel, palladium, chromium, rhodium, silver, gold, platinum, copper and tin, and combinations thereof. A plating layer composed of layers is formed.

After the plating process, the spectacle lenses 2 and the temples 5 are attached to the inter-lens coupling component 3 and the temple coupling component 4, whereby the rimless spectacles 1 are manufactured. Before assembling the rimless spectacles 1, the spectacle lens 2
Screw holes for attaching the screws 15 and 23 are formed at predetermined positions of the
23 is attached to the inter-lens connection component 3 and the temple connection component 4, and the temple 5 is attached to the temple connection component 4
Attached via a hinge 6. The order of the step of attaching the spectacle lens 2 to the inter-lens connection component 3 and the temple connection component 4 and the step of attaching the temple 5 to the temple connection component 4 is not particularly limited.

Next, the manufacturing procedure of the spectacle lens 2, the interlens connecting component 3, the temple connecting component 4 and the temple 5 will be described in detail with reference to the drawings starting from FIG.

(Production of Eyeglass Lens) A commonly used resin material such as polymethylmethacrylate is heated and melted, and the above-mentioned JP-A-1-275111 and JP-A-1-291 are used.
A circular eyeglass lens is manufactured by performing desired injection molding with an injection molding apparatus disclosed in Japanese Patent Publication No. 915, etc. Next, as shown in step 40 in FIG. 2, the formed circular spectacle lens is edged by a grinding machine to finish the spectacle lens 2 having a shape suitable for the spectacle frame. Next, in step 41, a screw hole having a hole diameter of about 1.4 mmφ into which the screws 15 and 23 (FIG. 1) are inserted is formed at a predetermined position of the spectacle lens 2 to obtain a finished product.

The drilling of the screw holes requires high positional accuracy in order to firmly fix the spectacle lens 2 to the inter-lens connecting component 3 and the temple connecting component 4 without play. Further, if an error occurs in the mounting position, it is not possible to manufacture eyeglasses according to the prescription, and particularly in the case of prescription eyeglasses, the function as eyeglasses for correcting eyesight cannot be achieved. Therefore, for example, it is desirable to determine an accurate hole position by the method for determining the hole position disclosed in Japanese Patent Laid-Open No. 63-6521 and the like and perform the hole drilling process.

FIG. 3 is a diagram for explaining a method of determining the hole-making position of the spectacle lens 2. In the figure, 50
Is an indicator, and this indicator 50 is a lens shape 51,
It is a chart in which fastener hole points 52, 53, center lines 54a, 54b, grid lines 55, frame size display 56 and the like are described.

The lens shape 51 is printed in the same size and shape as the actual spectacle lens frame, and the center line 54a,
The left and right are centered around 54b.

The frame size display 56 is a frame size displayed by the boxing system, for example, 55 mouths 14
Or it displays 58 mouth 14 etc., and displays 55 mouth 1
4 indicates that the nose width of the frame is 14 mm, and the lateral width of the lens shape is 55 mm. The center line 54a is located between the inner lines of the left and right lens shapes 51, and similarly, the center line 54b is the vertical direction. The bisector of the lens shape 51 is called a datum line. The horizontal scale indicated by the grid line 55 indicates the distance from the center line 54a to the optical centers of the left and right lens shapes 51,
The vertical scale indicates the distance in the vertical direction from the datum line, and the distance and near optical centers can be displayed. The stopper hole points 52 and 53 are, for example, the outermost distance 3. from the lens shapes 51 facing each other.
It is formed 2 mm above.

Next, when opening the screw hole, the indicator 5
Place the spectacle lens 2 that has been trimmed at 0,
Align the lens shape 51 according to
Mark the lens hole position with paint. At this time, at the same time, it is checked whether or not the positions of the eye point (optical center of the lens) and the center of the pupil of the spectacle wearer coincide with each other on a grid line described in the target lens shape.

Holes 52 and 53 of the indicator 50 are, for example, 3.2 mm from the outer circumference, vertically upward from the datum line, for example, 8 mm for the ear-side stopper hole 53, and 9 mm for the nose-side stopper hole 52. It is in. The reason is that if the distance is within 3 mm from the outer circumference of the lens, the outer edge is too close to the outer circumference at the time of drilling work, the edge is likely to be chipped, the joint strength between the connecting component and the lens is weakened, and the hole is easily broken. .

Next, a screw hole is machined in the spectacle lens 2 by using a normal spectacle lens boring machine.

(Production of inter-lens connection component) FIGS. 4 to 9 are views showing a manufacturing process of the inter-lens connection component and a barrel polishing apparatus. First, the processing procedure of the inter-lens connection component 3 will be described with reference to FIG. 2. The inter-lens connection component 3 is punched into a metal plate in step 60, and then in step 6
In step 1, a metal plate is punched into a predetermined contour shape by press working to manufacture a lens connection intermediate product 72. Next, in step 62, the first barrel-finishing of the lens-coupling intermediate product 72 formed by punching is performed, and in step 63, the bridge is bent. Further, in step 64, the stay is bent, and in step 65, the pressing claw is bent, and then in step 66, the second barrel polishing is performed. Finally, a plating process is performed in step 67 to complete the manufacture of the interlens connection component 3.

FIG. 4 is a plan view of the lens coupling intermediate product 72 punched into a predetermined contour shape by pressing a metal plate. The intermediate product 72 includes the bridge portion 10,
Lens pressing claws 11A and 11B, pad arm 12
A, 12B and lens mounting stay portions 14A, 14B are all formed in a flat plate shape which is developed on the same plane.

In the punching process in step 60, the pad 13 shown in FIG. 1 is replaced by the pad arm portions 12A and 12B.
Hole 70 (see FIG. 4) and screw 15 for attaching to
The holes 71 for screwing the screws into the stay portions 14A and 14B are punched out. The hole diameter of these holes 70 and 71 is 3
mmφ and 1.4 mmφ. After punching such holes 70, 71, or these holes 70, 71,
When the metal plate is punched at the same time as the punching of 71, the intermediate product 7 of the inter-lens coupling component 3 is stamped.
Produce 2. At the time of punching out the lens coupling intermediate product 72, the bridge portion 10, the lens pressing claw portions 11B and 11B, and the pad arm portions 12A and 12 which are created in advance.
It can be easily obtained by punching based on the developed pattern of the final lens-to-lens connection component 3 in which the respective parts of B and the lens mounting stay parts 14A and 14B are integrated.

(Barrel Polishing) The first barrel polishing step in step 62 is performed to polish burrs and fracture surfaces generated by the press working in steps 60 and 61. There are removal methods, and among them, barrel polishing can be effectively used. The barrel polishing device 80 uses, for example, an octagonal prism-shaped container 81 as shown in FIG. This container 81 has an abrasive material (for example, a powder of cerium oxide or aluminum oxide, which is called a medium having a size of 2 mm to 10 mm, hardened with a plastic into a triangular pyramid or a cone) and a buffer material (water, compound, etc.). 82 and the above-mentioned intermediate product 72 which is a non-abrasive material are put therein, and in this state, the intermediate product 72 is polished by being rotationally driven by a motor (not shown). In addition,
Reference numeral 85 is a net shelf for separating the polishing object and the particles to be polished.

After the polishing, the intermediate product 72 taken out from the barrel polishing apparatus 80 is transferred to the bridge portion 10 in step 63.
The bending process is performed. 7 (a), (b), (c)
FIG. 4A is a plan view, a front view, and a right side view of an intermediate product 72 in which the bridge portion 10 is bent. By the bending process of the bridge portion 10, the left and right lens pressing claw portions 1
1A and 11B are bent 90 degrees to the back surface side so as to be substantially orthogonal to the bridge portion 10 together with the pad arm portions 12A and 12B and the stay portions 14A and 14B. After the folding process of the bridge portion 10, the stay portions 14A and 14B are bent outward by 90 ° so as to be substantially parallel to the bridge portion 10 as shown in FIGS. 8A, 8B, and 8C. . Thereafter, in step 64, the lens pressing claw portions 11A and 11B are bent so as to match the curved shape of the nose side edge surface portion of the spectacle lens 2. FIG. 9 (a),
(B) and (c) are diagrams showing a state in which the lens pressing claw portions 11A and 11B are curved, and the shape of the intermediate product 72 obtained in step 65 is the same as the shape of the inter-lens coupling component 3 which is the final product. Almost equal.

(Barrel Polishing) Next, in step 66, second barrel polishing is performed. Here, in the case of the first barrel polishing for polishing the intermediate product 72 immediately after die cutting, as shown in FIG. 5, the abrasive 82 and the like and the intermediate product 72 are put together in the container 81. However, in the case of the second barrel polishing for polishing the intermediate product 72 formed into a substantially final product shape, the intermediate product 72 is inserted into the container 81 while being held by the holding member, and polishing is performed. This is to prevent the intermediate products 72 from hitting each other or bending by hitting the inner wall surface of the container during polishing. It should be noted that the first barrel polishing step and the second barrel polishing step are set in consideration of the polishing conditions such as the type and time of the polishing material and the cushioning material 82 according to the required polishing amount.

(Plating treatment) After barrel polishing, JIS. G
An intermediate product 72 made of SK5 steel shown in 4401 is placed in a container 81.
After pre-treatment with acid cleaning and alkaline degreasing cleaning, a pure nickel plating layer with a thickness of about 3 μm and a nickel-palladium alloy plating layer with a thickness of about 1 μm were applied by the same method to obtain the final product. The manufacture of the inter-lens connection component 3 is completed.

(Manufacture of temple connecting parts) FIGS. 10 to 1
3 is a diagram showing a manufacturing process of the temple connecting component 4. FIG. The temple connecting component 4 is manufactured through the procedure of steps 90 to 98 shown in FIG. The material of the temple connecting component 4 is not limited to the same metal material as the interlens connecting component 3, but may be a different metal material. Step 90 is a step of punching holes 100 and 101 (FIG. 10) in a metal plate having a predetermined plate thickness. The holes 100 and 101 (FIG. 10) are holes for screwing the screws 23 into the stay portion 24 shown in FIG. 1 and holes for connecting the temple 5. The diameters of the holes 100 and 101 are about 1.4 mmφ and 1 mmφ, respectively. After punching out the holes 100 and 101, the metal plate is punched into a predetermined contour shape by the contour cutting process in step 91 to manufacture the temple-connected intermediate product 102.

10 (a) and 10 (b) are a plan view and a front view of the temple-connected intermediate product 102 punched into a predetermined contour by press working a metal plate. The intermediate product 102 is formed in a flat plate shape in which the respective end portions of the end portion 21, the lens pressing claw portion 22 and the stay portion 24 are developed on the same plane.

At the time of punching out the intermediate product 102, a conventional armature, which is arranged in advance between the eyeglass lens 2 and the temple 5 and corresponds to the armature portion 21, the lens pressing claw portion 22 and the stay portion 24, It can be easily obtained by punching based on the development pattern of the temple connecting component 4 having the final shape in which the respective element components of the lens pressing claw and the lens mounting stay are integrated. The hole 1
A plurality of 01 are formed at the rear end of the end portion 21, that is, both side edges of the portion 21a to which the temple 5 is connected. This is because the length of the temple 5 can be adjusted.

The first barrel polishing step in step 92 is performed to polish burrs and fracture surfaces produced by the press working in steps 90 and 91, and is the intermediate product 72 of the inter-lens coupling component 3 described above. Similarly to the above, the barrel polishing apparatus 80 shown in FIG. 5 is used.

After polishing, the temple-connected intermediate product 102 taken out from the barrel polishing apparatus 80 is subjected to step 93 to bend the stay portion 24. 11 (a),
3B is a plan view and a front view of the temple-connected intermediate product 102 in which the stay portion 24 is bent. The stay portion 24 is bent so as to be inclined at a required angle on the back surface side of the end portion 21. After the step of bending the stay portion 24, in steps 94 and 95, the temple connecting portion 21a of the end portion 21 is bent in a U shape in side view, and at the same time, the lens pressing claw portion 22 is bent outward as shown in FIG. To bend. Further, in step 96, folding back processing is performed. This folding process
As shown in FIG. 13, the rear portion of the lens pressing claw portion 22 is folded back inward in a substantially U shape at the front end portion of the end portion 21. This allows the stay portion 24 to closely face the back surface of the spectacle lens 2. The shape of the temple-connected intermediate product 102 obtained in step 96 is substantially the same as the shape of the temple-connected component 4 which is the final product.

(Barrel Polishing) Next, in step 97, second barrel polishing is performed. Here, in the case of the first barrel polishing for polishing the temple-connected intermediate product 102 immediately after die-cutting, as shown in FIG. 5, the polishing material 82 and the temple-connected intermediate product 102 are directly put together in a container. Although it may be placed in 81, in the case of the second barrel polishing for polishing the temple-connected intermediate product 102 formed into a substantially final product shape, similar to the second barrel polishing step of the intermediate product 72, the temple-connected intermediate product is used. This is performed in a state where the product 102 is held by the holding member. Further, the first barrel polishing step and the second barrel polishing step are set in consideration of the polishing conditions such as the type and time of the polishing material and the buffer material 82 according to the required polishing amount.

(Plating treatment) After barrel polishing, JIS. G
Temple connected intermediate product 1 made of SK5 steel shown in 4401
02 was taken out of the container 81, pre-treated with acid cleaning and alkaline degreasing cleaning, and then a pure nickel plating layer with a thickness of about 3 μm was formed.
A palladium alloy plating layer is applied to complete the production of the final product, the temple connecting component 4.

(Manufacturing of Temple) FIGS. 14 and 15 are views showing a manufacturing process of the temple 5. Temple 5
It is manufactured by steps 110 to 115 shown in FIG. Step 110 is a step of punching a hole 120 in a metal plate having a predetermined plate thickness as shown in FIG. This hole 120
Is a hole for inserting a connecting pin (not shown) for connecting the temple 5 to the temple connecting component 4 so as to be openable and closable. The hole diameter is about 1 mmφ. After punching the hole 120, the metal plate is punched into a predetermined contour shape by the contour cutting process in step 111, and the temple intermediate product 12
1 is manufactured (FIG. 14). When the temple intermediate product 121 is punched out, the hinge portion 12 is formed on the end portion in advance.
It can be easily obtained by punching based on the developed pattern of the temple 5 having the final shape having 2 integrally. As shown in FIG. 14, the temple intermediate product 121 has a rear end portion, to which the temple cover 7 (FIG. 1) is attached, punched into a long and thin plate shape which is thinner than the front end portion.

Next, in step 113, the hinge portion 12
Bend 2 in a U-shape in side view as shown in FIG. Then, in steps 114 and 115, the second barrel polishing and plating processing is performed. The second barrel polishing and plating processes are performed in the same manner as the intermediate products 72 and 102 of the inter-lens connection component 3 and the temple connection component 4 described above, and therefore description thereof will be omitted. After the plating process, the temple cover 7 shown in FIG. 1 is attached to the rear end portion of the temple intermediate product 121, and the production of the temple 5 is completed. The temple cover 7 is attached by inserting the temple 5 into the hole of the temple 7 and directly inserting the temple 5, joining and fixing the temple 5 with an adhesive, or molding the temple cover 7 integrally with the temple 5 at the time of injection molding. .

After the respective eyeglass components are manufactured in this way, in step 130, the temple connecting component 4 and the temple 5 are coupled by a coupling pin (not shown). When connecting, the hinge portion 122 (FIG. 15) of the temple 5 is connected to the temple connecting portion 21a of the temple connecting component 4 as shown in FIG.
After being inserted into the groove 141 shown in (c) from the rear and positioned, a connecting pin (not shown) is inserted into the temple connecting portion 21a and the holes 101 and 120 of the hinge portion 122. Thereby, the temple connecting portion 21a and the hinge portion 1
22 and the connecting pin are hinges 6 (FIG. 1) of the temple 5.
The temple 5 can be opened and closed in the left-right direction.

Next, in step 131, the spectacle lens 2 is attached to the inter-lens connection component 3 and the temple connection component 4 with screws 15 and 23, and the pad 13 is attached to the pad arm portions 12A and 12B of the inter-lens connection component 3, respectively. The assembly of the rimless glasses 1 is completed. It should be noted that the pad 13 is made of a resin in a disk shape as shown in FIG. 16, and a protrusion 13a protruding from the center of one surface of the pad 13 is fitted into a hole 70 (see FIG. 4) of the pad arm portion 12, It is fixed with an adhesive.

FIG. 17 is a sectional view showing the mounting structure of the spectacle lens 2. Screw 15 is a washer with resin sleeve 1
The nose side edge of the spectacle lens 2 by being inserted into the screw hole 142 of the spectacle lens 2 through 51, fitted into the hole 71 (FIG. 4) of the stay portion 14A, and screwed into the nut 143. Is fixed to the stay portion 14A of the inter-lens connection component 3.
Similarly, the screw 23 is a washer 15 with a resin sleeve.
5 is inserted into the screw hole 156 of the spectacle lens 2 through 5,
The temple-side end edge portion of the spectacle lens 2 is fixed to the stay portion 24 of the temple connecting component 4 by being fitted into the hole 100 (FIG. 10) of the stay portion 24 and screwed into the nut 157. As for the lengths of the screws 15 and 23, since the lens thickness differs depending on the prescription, the excess portion is cut after the lens is fastened.

In the rimless spectacles 1 thus manufactured by the method of the present invention, the inter-lens coupling component 3, the temple coupling component 4 and the temple 5 are formed by pressing a thin metal plate. Was thin and had excellent elasticity, and was also good for the corrosion test of plating. Further, the frame was light in weight, and the balance between the inter-lens connecting component 3 and the temple 5 was well balanced so that the frame did not slide down even when the face was shaken strongly, and it was excellent in wearing feeling.

Further, in the present invention, since the inter-lens connecting part 3, the temple connecting part 4 and the temple 5 are formed by press working of a thin metal plate, brazing is not necessary, and therefore, the brazing occurs. The strength design considering the softening of the metal is unnecessary.

In the present invention, the interlens connecting parts 3,
It is necessary to balance the strength with the temple connecting part 4 and the temple 5. Therefore, it is preferable to use all pressed parts. That is, the slim temple 5
On the other hand, if the inter-lens connection component 3 is too robust, the balance will be impaired, so it is preferable to determine that point, in particular, the toughness of the material as the main element.

Next, another embodiment of the present invention will be described. 18 (a) and 18 (b) are a plan view and a front view showing another embodiment of the lens coupling intermediate product manufactured by punching a metal plate. This intermediate lens product 160
Is attached to both ends of the bridge portion 10 with the lens pressing claw portions 11A,
11B is extended and these lens pressing claw portions 11A and 11B are provided.
The pad arm portions 12A and 12B and the stay portions 14A and 14B are connected to one side of the above. In order to make this lens coupling intermediate product 160 into substantially the same shape as the final lens coupling component 3, the bridge portion 10 is first made convex on the surface side by the first step (bridge bending step) shown in FIG. And the lens retainer tab 11
A and 11B are bent downward and curved outwardly to be concave, and then the stay portions 14A and 14B are moved forward by about 90 by a second step (stay bending step) shown in FIG.
° Just fold it. In addition, the lens pressing claw portion 11A,
The bending order of 11B and the stay portions 14A and 14B is not specified.

In FIG. 2, the fold-back process in step 96 is performed after the hinge-bending process in step 95. As shown in FIG. 21, the front end of the fold-out part 21 is formed into a substantially U shape by the fold-back process in FIG. The temple connecting part 21a (FIG. 12) of the end part 21 may be bent in a U-shape by bending and then the hinge part bending step.

22 (a) and 22 (b) are a plan view and a front view showing an embodiment in the case of integrally molding the armature and the temple. Reference numeral 170 denotes a flat plate-shaped temple intermediate product manufactured by stamping a metal plate.
The stay portion 172 and the lens pressing claw portion 173 are integrally formed. The stay portion 172 is extended to the front end of the temple portion 171. The lens pressing claw portion 173 is provided near the front end portion of the temple portion 171 so as to form a cross with this.

FIG. 23 shows the first intermediate product 170 of the temple.
The step (stay bending step) of FIG.
Shows a state of being bent so as to incline downward by a required angle. Next, the pressing claw portion 173 is bent in the second step (pressing claw portion bending step) shown in FIG. 24 to obtain a shape close to the final product in which the end pieces and temples are integrated as shown in FIG. be able to.

FIG. 25 is a view showing another embodiment of the hinge portion of the temple. In this embodiment, the hinge portion 1 of the temple 5 is used.
22 is formed in a ring shape, and in such a hinge portion 122, the friction resistance with the temple connecting portion 21a is smaller than that of the hinge portion shown in FIG. 15, and the temple 5 can be smoothly opened and closed. It has the advantage that it can. In addition, as shown in FIG. 26, a hinge 190 that is generally used in the past is used.
It is also possible to join and fix to the temple connecting component 4 and the temple 5.

FIG. 27 is a perspective view showing another embodiment of the pad. In this embodiment, the screw hole 1 is formed on one surface of the pad 13.
A mounting portion 192 having 91 is integrally projected, and the screw is screwed into the screw hole 191 to fix the pad 13 to the pad arm portion. Further, the pad type having a pot box can be dealt with by using a forming means such as drawing.

The assembling / adjusting step shows a finishing step of the production of the rimless spectacles, and the final adjustment of each frame part element is carried out based on the thickness of the prescription lens, the lens curve and the like. For example, a fitting operation that is generally performed in general is also included, such as expanding the pad arm according to the lens curve, adjusting the nose contact angle, and maintaining the positions between the temples substantially parallel.

It should be noted that the present invention is not limited to the above-described embodiments, and various changes and modifications can be made without departing from the gist of the present invention.

[0059]

As described above, the method of manufacturing the rimless spectacles, the method of manufacturing the inter-lens coupling component for the rimless spectacle frame, the method of manufacturing the temple coupling component for the rimless spectacle frame, and the rimless spectacles according to the present invention as described above. According to the above, since the inter-lens coupling component and the temple coupling component are manufactured by punching a metal plate, a brazing process is not required,
Therefore, the strength design taking into account the softening of the metal that occurs during brazing is not required for the parts, so a compact and lightweight frame part can be created, and the adhesion of the plating is also excellent. In addition, since it is performed by press working, it can be mass-produced and is much cheaper than conventional products. In addition, it is possible to form a slender frame, and it is also excellent in strength, and it is also excellent in strength balance of the spectacles as a whole and stability of the optical surface when worn by the nose and ears, so it is also suitable as a sports frame, for example Is.

[Brief description of drawings]

FIG. 1 is an external perspective view showing an embodiment of rimless spectacles manufactured by the method of the present invention.

FIG. 2 is a diagram showing a manufacturing procedure of each spectacle component.

FIG. 3 is a diagram for explaining a step of forming a screw hole in a lens.

FIG. 4 is a plan view for explaining the manufacturing process of the inter-lens connection component.

FIG. 5 is a diagram for explaining a barrel polishing step.

FIG. 6 is a perspective view of a mesh rack.

7 (a), (b) and (C) are a plan view, a front view and a right side view for explaining a manufacturing process of the lens connecting component.

8A, 8B, and 8C are a plan view, a front view, and a right side view for explaining a manufacturing process of the lens connecting component.

9A, 9B and 9C are a plan view, a front view and a right side view for explaining a manufacturing process of a lens connecting component.

10 (a) and 10 (b) are a plan view and a front view for explaining a manufacturing process of the temple connecting component.

11A and 11B are a plan view and a front view for explaining a manufacturing process of the temple connecting component.

12 (a), (b) and (C) are a plan view, a front view and a right side view for explaining a manufacturing process of the temple connecting component.

13 (a) and 13 (b) are a plan view and a left side view for explaining a manufacturing process of the temple connecting component.

14 (a) and 14 (b) are a plan view and a front view for explaining a temple manufacturing process.

15 (a), (b), and (C) are a plan view, a front view, and a left side view for explaining a temple manufacturing process.

FIG. 16 is a perspective view of a pad.

FIG. 17 is a cross-sectional view showing a lens attachment structure.

18 (a) and 18 (b) are a plan view and a front view showing another embodiment of the lens coupling intermediate product manufactured by punching a metal plate.

19 (a) and 19 (b) are a plan view and a right side view for explaining the first step of the intermediate product.

20 (a) and 20 (b) are a plan view and a right side view for explaining the second step of the intermediate product.

FIG. 21 is a front view showing the step of folding back the end piece.

22 (a) and 22 (b) are a plan view and a front view showing another embodiment of the armature and the temple.

23 (a) and 23 (b) are a plan view and a front view for explaining the first step of forming the armature and the temple.

24 (a), (b), and (C) are a plan view, a front view, and a right side view for explaining the second step of the armature and the temple.

FIG. 25 is a plan view showing another embodiment of the hinge portion of the temple.

FIG. 26 is an external perspective view of rimless glasses showing another embodiment of the present invention.

FIG. 27 is a perspective view showing another embodiment of the pad.

[Explanation of symbols]

 1 rimless spectacles 2 spectacle lenses 3 inter-lens coupling parts 4 temple coupling parts 5 temples 6 hinge parts 10 bridge parts 11A, 11B lens pressing claw parts 12A, 12B pad arm parts 13 pads 14A, 14B stay parts 15 screws 21 endorsing parts 22 Lens retainer part 23 Screw 24 Stay part 72 Lens connection intermediate product 102 Temple connection intermediate product

Claims (4)

[Claims] 1. A preformed bridge between two spectacle lenses, a pad arm provided on the bridge, a lens mounting stay, and a lens presser tab having a shape in which the respective component parts are integrated. A process of punching out a metal plate with a required plate thickness based on the developed shape of the connecting parts to produce an intermediate lens connecting product, and each bridge part, pad arm part, lens mounting stay part, lens retainer of this intermediate lens connecting product. Steps of forming the interlocking parts by forming the claws into desired shapes by pressing, respectively, and a pre-created armor that is arranged between the spectacle lens and the temple, and the lens mounting that is mounted on this armor. A metal plate with the required plate thickness is punched based on the development figure of the temple connecting part, which is a shape in which the element parts of the stay and the lens pressing claw are integrated. The process of making two temple-connected intermediate products, and forming each of the end pieces, lens mounting stays, and lens retainer claws of this temple-connected intermediate product into the desired shape by press work, to create two left and right symmetrical temple-connected parts. A manufacturing method of rimless spectacles, comprising: a manufacturing step; and a step of assembling the inter-lens connection part and the temple connection part manufactured by the above step into two spectacle lenses preliminarily trimmed. . 2. A method for manufacturing a lens-to-lens connection component for a rimless spectacle frame, comprising a bridge, which is created in advance between two spectacle lenses, a pad arm provided on the bridge, and a lens mounting stay. And a step of manufacturing a lens connection intermediate product by punching out a metal plate of a required plate thickness based on the developed pattern of the lens connection component having a shape in which each component element of the lens holding claw is integrated, and this lens connection intermediate product And the pad arm portion is adjusted to a predetermined bending position, and the lens mounting stay portion of the lens coupling intermediate product is approximately 90 °.
A method for manufacturing an inter-lens coupling component for a frame without rims, comprising: a step of bending outwardly; and a step of bending the lens pressing claw portion of the intermediate lens coupling product into an arc shape. 3. A method for manufacturing a temple connecting component for a frame without rims, comprising a pre-made end piece arranged between an eyeglass lens and a temple, a lens mounting stay and a lens provided on the end piece. The process of punching out a metal plate of the required thickness based on the development pattern of the temple connecting part with the integrated presser tab to manufacture the temple connecting intermediate product, and the tip of the lens mounting stay part of this temple connecting intermediate product Bending into a V shape, bending the lens pressing claw portion of the temple-connected intermediate product into an arc shape, and bending the end portion of the temple-connected intermediate product into a curved surface R (R).
And a step of bending it to the outside by approximately 180 °, and a method for manufacturing a temple connecting component for a frame without rims. 4. A bridge portion and a pad for connecting the two spectacle lenses, which are manufactured by press working of a metal plate, with two spectacle lenses edged into a desired shape. Manufactured by press working of a metal plate and an inter-lens connecting part that integrally has a pad arm part to be mounted, a lens mounting stay part to which the spectacle lens is fixed, and a lens pressing claw part that also holds the nose side edge of the spectacle lens. And a lens attachment stay to which the spectacle lens is fixed, and two temple connecting parts that integrally have a lens pressing claw portion that also holds the temple side edge surface of the spectacle lens. Rimless glasses to be.