JPH0369910A - Safety goggles - Google Patents

Abstract

PURPOSE: To obtain inexpensive safety goggles whose visual field is made larger by bending the side end rim of a plastic lens body backward to form a side barrier, integrally forming a head end rim with the center part of a forehead member and attaching temple members on the side end rims. CONSTITUTION: The goggles is a single optically transparent plastic lens body 12, and provided with the head end rim, a lower end rim, the 1st and 2nd side end rims 12B and front and rear side surfaces. The side end rim 12B is bent backward so as to form the side barrier, the lens body 12 is also provided with the forehead member 12A which is attached on the head end rim of the lens body, the forehead member 12A is provided with the 1st and 2nd end parts and the end parts are held downward, then, the parts are fixed on the side barriers of the lens body 12. And the 1st and 2nd plastic temple members 16 are separately attached to the 1st and 2nd side end rims 12B of the lens body 12. All the parts of the goggles are made of optical-grade plastic, so that a satisfactory circumferential visual field is obtained, and also, the goggles is obtained at a low cost.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to protective eyewear such as sunglasses or safety glasses.

[Prior Art and Problems to be Solved by the Invention] Protective eyewear, such as sunglasses or safety goggles, have traditionally been made of glass, and more recently made of plastic. Often there are separate lenses, frame members, and temples. The lens is secured within the frame member as a separate item.

In some instances, sunglasses, safety glasses, and goggles have been provided that cover both eyes with a single lens body.

However, some of these products have a separate frame member that must secure or hold the lens body. Other such products include frames that are integral with the lens body, but these products must be injection molded using liquid plastic. As a result, the frame is inherently thicker than the lens body as a natural result of injection molding technology.

Since the optical transparency differs between the frame portion and the lens portion of the glasses, the user's effective field of view is limited.

Also, no provision is made for adjustment of the nasal support or padding. Thicker frames also add more weight to the product. Injection molding processes are also expensive.

Conventional wide-angle or curved sunglasses and safety glasses are
(1) Many separate parts (i.e. lenses, frames,
(2) molded using heated fluid plastic forced into a mold; (3) hinged or overlapping two Object with two sided barriers, (4)
having an elastic frame shaped to the curvature of the face;
It is classified as

All of these types of products have inherent limitations and drawbacks.

Molded products are inherently limited in the possibility of being provided with decorations. If any such decorations are desired, they must be attached in some way after the product is formed and then removed from the mold. This is expensive and also troublesome. The molding process also makes the application and use of roughness-resistant casting molds more expensive. This is because such casting molds have to be applied to the product in an individual manner, increasing the required effort and time.

Never before has a safety eyewear product been provided that has the advantages of the present invention.

SUMMARY OF THE INVENTION According to one embodiment of the present invention, there are provided safety glasses, which include: (a) a single optically transparent plastic lens body, which includes a head edge and a lower part; a plastic lens body having an edge, first and second side edges, and anterior and posterior surfaces, the side edges being held rearward toward the posterior surface to form a side barrier; The lens further includes a frame member attached to the head edge of the lens body, the frame member having first and second ends, the ends being held downwardly and secured to the side barriers of the lens body. (b) first and second plastic vine members;
Protective eyeglasses are provided, comprising: temple members attached to first and second side edges of the lens body, respectively.

[Effect 1] The protective eyewear product of the present invention is made of optically clear plastic of uniform thickness. The glasses have a wider and safer field of view (ie, a full circumferential field of view) than offered by conventional products.

Protective eyewear products may be provided as safety glasses or sunglasses. Manufacturing the product can be simple, quick and relatively inexpensive. The manufacturing process used allows the glasses to be manufactured from large sheets or rolls of plastic. No injection molding is required. Many units can be manufactured simultaneously.

Also, if desired, the plastic can be easily and conveniently provided with decorations prior to manufacture of the product.

Similarly, plastics may be easily provided with a scratch-resistant coating prior to manufacture of the product. The coating is not affected during the manufacturing process, or the optical clarity of the plastic is not affected during the manufacturing of the product.

The safety eyewear product of the present invention is decoratively attractive (less bulky than conventional devices) and can be easily decorated as desired during its manufacture. The product has fewer parts than traditional eyewear products, is lightweight, extremely safe and durable. The product has very good strength relative to its weight. In the product of the present invention, the face barrier or lens body is supported and reinforced by the forehead member and side barriers without the need for heavy, thick intersections formed from the molding process.

The temples can be pivotally attached to the sides of the lens body in a number of different ways. The product also has an integral nose support pad to make the eyeglass product more comfortable to wear. The article of the invention also has a groove or ventilation area at the head edge of the lens body covering the eye. This prevents fogging of the lens body by allowing moisture to escape from the lens area.

[Embodiment] Referring to FIG. 1, a preferred embodiment of the safety goggles device 10 of the present invention is shown. The device has a single transparent optically transparent lens body or face barrier 12, a forehead portion, and side barriers.

The plastic has a uniform thickness and is optically clear throughout. The temple member 16° is fixed inside the side barrier 12B.

The lens body 12 has a forehead member 12A that extends along the head edge and is perpendicular to the body of the lens body.

1 along line 12D. The forehead member 12A is integral with the lens body or the main part of the surface barrier. This is also illustrated in Figures 2A through 2D, which show the lens body 12 without the temple attached.

The side edge 12B of the lens body is aligned with the fold line 12F as shown in the figure.
It is bent backwards along the line to form a side barrier.

The vine members 16 have rivets or pins 1 at their leading ends.
4 is fixed to the side edge of the lens body and the end of the frame member. Instead of rivets it is possible to use adhesive or plastic welding. A tab or flange 12C in the central lower portion of the lens body forms a nasal support or padding member.

The nasal bridge pad or support is integral with the lens body and can be bent as desired to adjust its width and position. In this method, the lens body can be adjusted,
By narrowing or widening the nasal bridge fit, it is adjusted to fit the nose and the lens body rests on the nose or as directed.

That is, the glasses can be adjusted closer or further from the face, and adjustments for proper fit of the temples on the ears are advised. The nose support pad is lightweight. Manual adjustment of the pads is simple.

The side barrier 12B is formed by bending the side edge of the lens body along the fold line 12F. The side barrier is integral with the lens body along the fold line. The side barrier reinforces the side edge of the lens body and protects the eyes from intrusion of objects, light, and glare.

In other words, the side barrier is a support for the side edge of the lens body, which provides strength, rigidity and durability to the curved lens body, and protects against the ingress of objects and light in one direction.

The forehead member or barrier 12A is formed by folding the head edge of the lens body along fold line 12D, in such a manner that the forehead member is perpendicular to the body of the lens body. In other words, the forehead member forms a 90 degree angle with the lens body along the fold line 12D.

The frame member is integral with the lens body along the fold line, but the remaining portion of the leading edge of the frame member beyond the fold line 12D is not integral with the head of the lens body. A long and narrow groove 12G is formed between the head of the lens body and the leading edge of the forehead member. These grooves serve as ventilation holes through which air can move and prevent moisture from condensing on the inside of the lens body in cold or humid environments. This greatly improves safety and function and allows moisture to rise and drain out of the glasses across the field of view of the eye.

The end portion 12E of the frame member is bent downward and secured to the side barrier 12B as shown in the drawings. The forehead member serves as a support and provides reinforcement to the lens body. As shown in the drawings, the leading edge of the frame member forms a curved line for curving the lens body, creating a surrounding effect.

The forehead member or barrier protects the eye from intrusive objects, intrusive light, and intrusive glare, while serving as a continuous support for the lens body and as side barriers 12B.

This gives the curved lens body strength, stiffness, and durability in the head plane, facial plane, and lateral plane.

The lens body surface barrier is e.g. 40 mm to 100 mm, 6
It is manufactured in a desired size range from 0 mm to 175 mm. These size ranges can be adapted to children and adults by sizing the nose bridge accordingly. Safety glasses can be worn alone or over conventional glasses. The average adult size is 55 to 15 for the lens body.
It is 5mm.

Safety glasses may or may not be colored, depending on the purpose of use. When the plastic is colored, the glasses provide protection from sunlight and ultraviolet light, and the amount of coloring can be varied according to conventional techniques.

Safety glasses are also useful as safety glasses to protect against intruders that enter the eye from the front, head, or sides. Safety goggles also provide protection from frontal or side impacts (e.g., drops or projectiles that occur during operation of grinding wheel discs, wire discs, polishing equipment, etc.).

Safety glasses are also made for use as welding glasses and provide protection from the glare of gas welding torches with appropriate barrier tinting. The glasses also provide protection from flying sparks associated with the welding process.

Safety eyewear also provides an inexpensive, disposable, light duty safety eyewear for people such as visitors who are occasionally exposed to potential eye hazards. Glasses are easily made during normal manufacturing,
It can be provided with decorations (e.g. identifying the eyewear provider or the person).

Safety eyewear also provides non-prescription eyewear that is decorated and suitable for use as a decorative accessory to complement personal clothing. For example, eyeglasses may be provided in any desired color or combination of colors or designs.

Safety glasses are also easily and inexpensively made from optical grade plastic sheet material. For example, FIG. 3 shows a top view of plastic sheet 20 in which a repeating pattern of lens barrel material 30 has been cut. The sheet may be many times larger than shown and a larger number of repeating patterns 30 may be cut if desired. For example, the sheets may be several feet wide and several feet long, with hundreds of eyeglass patterns per sheet.

The pattern 30 is preferably cut by a die (multiple dies if desired) in such a way that the cutting lines are not continuous. As a result, the lens corporal material remains within the plane of the sheet 20 and is retained therein.

Figures 4 to 4C show another variant and possibility of the invention. In FIG. 4, sheet 21 is coated or printed with a respective pattern 22 by a layer of colored material, the colored material being a different color from sheet 21. In FIG. For example, the pattern 22 may be formed by conventional silkscreen printing or the like. The pattern 22 may be formed, for example, to imitate a frame for a completed eyeglass product.

When the sheet material 21 is cut in the pattern 30 (as shown in FIGS. 4A and 4B), the layer 22 is disposed along the upper edge of the anterior portion of the lens body and throughout the frame member. Ru.

Any other pattern for layer 22 may be used as needed or desired. The color and thickness of layer 22 may be varied. Fourth
In the side view of Figure C, layer 22 is shown very thick for illustration purposes. Layer 22 may, for example, mimic the appearance of a separate structural frame member.

The process of printing or silkscreening on plastic sheets is a conventional and inexpensive means of adding color, pattern, and words. These methods are essentially limited to application on flat standard materials.

Prior art safety glasses are injection molded plastic or
Or because they are assembled from a plurality of small molded, cast, or machined parts, conventional eyeglasses cannot simply be inexpensively and complexly decorated on multiple pairs of eyeglasses at the same time. Meanwhile, in the present invention, flat plastic sheets can be easily, quickly and effectively printed or screen printed with desired designs in multiple colors;
Ru.

FIG. 5 is a top view of the plastic sheet 24, with the repeating pattern 33 cut to form the pre-vine material. The cut line is discontinuous and a capitula 34 of the sheet is left to retain the pre-vine material within the sheet. If desired, the vines can be cut completely in step - sheet 24.
or they may be cut from the sheet at a later stage.

Preferably the temple has an integral hinge. For example, as shown in FIG. 5, the temple is molded to form a recess 36 that extends laterally near the forward end of the temple member. Recesses are formed from both the top and bottom surfaces of the plastic (eg, 3/8 inch from the end of the temple). The front end of the temple is fixed to the side edge of the lens body, as shown in FIGS. 11 and 12. This will be the hinge.

The molding to form the recess lines 36 is performed simultaneously with the die cutting to form the pre-vine material. This allows multiple vines and hinges to be produced each time the die is struck.

FIGS. 6 and 6A are top and side views showing other modifications. The plastic sheet 25 is coated or printed with a repeating pattern 35 on its upper surface, the pattern generally corresponding to the shape of the vine to be cut from the sheet 25.

FIGS. 7, 7A, and 7B illustrate the use of male folding die 46 and female folding die 48 to cut plastic sheet 42.
2 shows a method of separating lens barrel material 40 from a lens body. Sheet 42 is placed between the dies and the dies are then pressed down. Die 46 has a protruding portion 46A, while die 48
has a recess 48A. The protruding part of the die 46 is the former material 4
0 into the recess of the die 48, the end of the frame member
It is bent backwards like the side edge of the lens body or the nose support part.

The use of polycarbonate plastic eliminates the need for heat to be used in the folding process to crease and fold the frame member and side barriers. However, when using plastics thicker than approximately 1 millimeter (0.04 inch), or when the die speed increases significantly and the dwell time in the die decreases, the male die is placed at the fold line to facilitate folding. It may also be heated along the line. Depending on the plastic formulation, plastic thickness, and operating speed, the male die is heated in the desired area by electrical resistance heating, for example, from 100'F to 300°F. If desired, it is also possible to preheat the cut plastic sheet stock in an oven or with a heat lamp to approximate the same effect as heating the male die.

FIG. 8 shows the pre-ophthalmic material 40 after it has been removed from the recess in the molded wall 48. FIG. The end portion 41A of the frame member 41 is bent backward like the end portion 43 of the lens body.

The nose support tab 40A is also folded back. See Figure 8A.

FIG. 9 shows how the frame member 41 is folded along line 41B so that the frame member is perpendicular to the lens body or surface barrier 45. FIG. The end 43 of the lens body is then pushed rearward in the direction of the arrow into the shape shown in Figure 9A. Thus, a curvature is formed in the lens body at each end.

This curvature helps to place the lens at an equal distance from the pupil across the arc of vision, thereby preventing optical distortion. Also, because the lens body surrounds the eye, a wider unobstructed field of vision is provided. Furthermore, the curved lens body protects the eye from substances entering from the sides.

The aperture in end 43 of the lens body and the aperture in end 41A of the forehead member are properly aligned when the lens body is bent rearward at the end.

10 and 11, the manner in which temple members 50 are secured to the side walls of lens body 45 at their leading ends 52 is shown. Pins or rivets 47 may be inserted through properly aligned holes or adhesives or welds may be used to join these parts together.

Each temple member has a hinge 51 near its leading end. In FIGS. 10 and 11, hinge 51 has a region of reduced thickness in the hinge. Figures 12A and 12B
See figure.

The region of reduced thickness is a line near the front end of the temple that is cut into the flat plastic sheet at the same time that the temple member is die cut into the plastic. This die cutting and cutting can occur hundreds of times per second.

Each temple member 50 is pivoted inwardly (as shown by dashed line 50A) in the direction of the arrow shown in FIG. It pivots inward to any desired position.

However, the rear portion of the end 41A of the forehead member 41 prevents the temple member from pivoting outwardly (beyond perpendicular to the plane of the lens body). No wire reinforcement or thick soles are required. Also, no moving parts are required or there are no separate parts to break or get lost.

An opening 53 at the rear end of the temple member is used for attaching a safety cord.

Figures 13 and 14 are top views showing two different types of hinges useful in safety eyewear products. In FIG. 13, a temple member 60 is shown pivotally secured to lens body 45 by a conventional hinge member. Hinge member is pin 63
It has arms 61 and 62 which are pivotally connected by. One arm 61 is fixed to the leading end of the temple 60,
Arm 62 is fixed to the end of the lens body.

FIG. 14 shows that the lens body 4 is attached by a flexible band or member 72.
5 shows a temple 70 pivotally connected to the end of 5. Emperor
One end of the temple 72 is adhesively fixed to the leading end of the temple 70, and the other end of the temple is adhesively fixed to the lens body 45.

This hinge allows the temple to bend or pivot inward to the rear of the lens body, but it prevents the temple from bending outward before the position shown. Any permanently flexible and durable material may be used for band 72. Adhesive coated vinyl or polyester may be used as well as woven types. The obi may or may not be reinforced. Polyvinyl chloride strip (approx.
(254 mm to 0.508 mm thick) may be glued or riveted to the hanger and side barriers.

FIG. 15 shows another variation of the protective eyewear product 80,
It has a long or deep side barrier 8 that extends to the bottom of the lens body.
It has 2. An end portion 84A of the forehead barrier 84 extends downward along the inside of the side barrier 82.

The temple member 85 has a forward end 86 and a scored hinge line 87 parallel to the forward end of the temple. The front end of the temple extends downwardly at the same distance as the side barrier 82, thereby providing very good protection of the eye from intruding substances when the temple is secured to the side barrier.

The living hinge shown here is highly advantageous for eye protection for several reasons. These hinges are easy to make by simply cutting a notch in the plastic. This is more economical than using conventional hinges. Additionally, living hinges do not shatter and are therefore safer than traditional types of hinges used in eyeglasses.

Polycarbonate is a preferred plastic for use in producing the eyewear products of the present invention. The thickness can be selected as desired. Other types of optical grade plastics (eg, commercially available plastics such as CR-39) may also be used. Preferably, the temple member is made of durable, flexible, and elastic material such as nylon or polyethylene.

The plastic, when in sheet form, is preferably subjected to a conventional scratch resistant coating using conventional coating processing equipment. In this method, all parts of the eyewear product (
(as well as the lens body) can be coated with a scratch-resistant coating. Plastic sheet materials can also be easily and effectively printed or silk screened with desired colors or designs. The plastic sheet material is then die cut and multiple copies per sheet to produce the pre-optic material. Since all parts of the eyewear product are made from optical grade plastic, the final product allows for good circumferential vision.

Eyewear products of the present invention can be produced as efficiently from plastic rolls as from plastic sheets. Thus, the technique of the present invention can be used to produce safety glasses in a continuous process using a rotating die. (It is very efficient.) As another variation, instead of printing or silk-screening the colored pattern on a flat plastic sheet, a heated foil stamping and scoring technique may be used, thereby Metal decorations, raised cut decorations and structural ridges are formed simultaneously with the folding process.

This reduces labor and material costs.

The safety eyewear of the present invention is extremely durable due to the forehead and side barriers supporting and reinforcing the product while minimizing weight.

The thickness of the plastic used to make eyewear products can vary depending on requirements. For example, a 0.504 mm or 3.048 mm thick plastic sheet may be used.

The eyewear products of the present invention may also be made primarily for use as decorative eyewear. Thus, considerations regarding safety glasses involve considerations regarding decorative eyewear.

[Brief explanation of drawings]

Fig. 1 is a perspective view of an embodiment of the protective eyewear product of the present invention, Fig. 2A is a head plan view of an embodiment of the lens body or surface barrier, and Fig. 2B is a view of the lens body or surface barrier. FIG. 2C is a side view of one embodiment of the lens body or surface barrier; FIG. 2D is a bottom plan view of one embodiment of the lens body or surface barrier; FIG. FIG. 4A is a top view of a plastic sheet with a decorative pattern coated or printed on the plastic sheet; FIG. Figure 4B is a plan view of the plastic sheet shown in Figure 4A after die cutting to form a repeating pattern of lens body or surface barrier precursor material in the plastic sheet; Figure 4C is a side view of the sheet shown in Figure 4A; Figure 5 is a plastic sheet having a repeating pattern of tendrils or bows cut into the sheet; Top view. FIG. 6 is a plan view of a plastic sheet with a repeating decorative pattern coated or printed; FIG. 6A is a side view of the plastic sheet shown in FIG. 6; FIG. 7 is a front view of a lens body or surface barrier. FIG. 7A is a perspective view illustrating one method in which material is separated from a plastic sheet by male and female dies; FIG. FIG. 8 is a perspective view showing the pre-ophthalmic material in the die and the plastic sheet from which the pre-ophthalmic material has been separated; FIG. 8 is a perspective view showing the pre-ophthalmic material after being removed from the female goose; FIG. FIGS. 9 and 9A are perspective views showing how the pre-spectacle material of FIG. 8 is shaped and folded; FIG. FIG. 9A is an exploded perspective view showing how a temple member of the preferred type is secured to the side edge of the lens body; FIG. 11 is a partial plan view showing how a preferred type of temple member is secured to the side edge of the lens body; , FIG. 12A is a front view of a preferred type of temple member used, FIG. 12B is a side view of a preferred type of temple member used, and FIG. 13 is a front view of a preferred type of temple member used in a protective eyewear product. Figure 14 is a front view showing another type of hinge used in protective eyewear products; Figure 15 is an exploded side view showing another type of temple member and lens body. , 10... Safety glasses device, 12... Surface barrier, 12A.
... Frame member, 12B... Side edge, 12C... Flange, 12D... Line, 12E... End, 12F...
Broken line, 12G... Groove, 16... Vine member, 20.
...Plastic sheet, 21...Sheet, 22...
・Pattern, 30...Lens body cylinder material, 36...Concave,
46... Male bending die, 48... Female bending die, 5o... Hanging member, 52... Top end.

Claims (10)

[Claims] (1) Safety glasses, which are a single transparent plastic lens body and have a head edge, a lower edge, a first side edge, a second side edge, a front surface, and a rear surface. the lens body further has a frame member attached to the head edge of the lens body, the side edge being bent rearward toward the rear surface to form a side barrier; The member has a first end, a second end, and a central portion therebetween, and the first end and the second end are bent downwardly and secured to the side barrier of the lens body. , the head end edge of the lens body is integral with the central part of the forehead member, and the first groove and the second groove are connected to the first end and the second end of the forehead member and the lens body. a plastic lens body formed between the head end edge of the lens body, a first member attached to the first side edge of the lens body, and a second member attached to the second side edge of the lens body. and safety glasses. (2) Eyeglasses according to claim 1, wherein the lens body, the forehead member, and the side barrier have a diameter of about 0.508 mm to 2.5 mm.
Eyeglasses having a uniform thickness in the range of 4 mm, the plastic lens body being colored. (3) Spectacles according to claim 1, wherein the forehead member is perpendicular to the lens body, and the lower edge of the lens body has an integral adjustable nose support pad. . (4) The eyeglasses according to claim 1, wherein the front surface of the lens body has a false-colored frame pattern thereon, and the frame pattern is ink having a color different from the color of the lens body. Glasses with a pattern. (5) Eyeglasses according to claim 1, wherein each of the temple members has an integral hinge portion, the hinge portion having an area of reduced thickness to facilitate pivoting. (6) A plastic lens that is a protective eyewear barrier and has a single transparent plastic lens body having a head edge, a lower edge, a first side edge, a second side edge, a front surface, and a rear surface. a protective eyewear barrier having a body, the side edges being bent rearward toward the rear surface to form a side barrier, the lens body further comprising a frame member attached to the head edge of the lens body; The frame member has a first end, a second end, and a central portion therebetween, and the first end and the second end are bent downwardly so that the lens body fixed to the side barrier, the head edge of the lens body is integral with the central portion of the forehead member, and a first groove and a second groove are connected to the first end and the second groove of the forehead member. formed between the end portion and the head edge of the lens body;
Safety glasses barrier. (7) A method for manufacturing a single protective eyewear lens body, which includes the steps of preparing a flat transparent plastic sheet, cutting a pattern corresponding to the pre-lens material into the sheet, and cutting out a pattern corresponding to the pre-lens material. has an integral lens portion, the integral lens portion has a head edge, a first side edge, a second side edge, an anterior surface and a posterior surface, and the anterior material further has a forehead member and a forehead member. The member has a first end, a second end and a central portion therebetween;
the head edge of the lens portion is integral with the central portion;
the pattern is formed by a die, the die cuts around the circumference of the lens portion and the forehead member; separating the pre-material from the sheet; and shaping the pre-lens material. and the side edges are bent rearwardly toward the rear surface to form a side barrier, the frame member is folded rearwardly, and the first end and the second end of the frame member are bent downwardly. the lens portion is bent and fixed to the side barrier of the lens portion, and a first portion and a second groove are provided between the first end and the second end of the forehead member and the head edge of the lens body; A method of making a unitary safety eyewear lens body comprising the steps of: forming. (8) A method according to claim 7, wherein the plastic sheet is provided in the form of a roll. (9) A method according to claim 8, wherein the pattern in the sheet is formed by a rotary die. (10) A method according to claim 7, wherein the sheet is coated with a colored pattern resembling the frame for the lens body.