JPH0323859A - Protective lens for goggles and method for assembling the same - Google Patents

Abstract

PURPOSE:To widen a visual field in case of use, to properly protect the face part and, further, to simply prepare a protective lens by a mass production system by mounting the protective lens equipped with corrective power to goggles. CONSTITUTION:A protruding step part 5 having a recessed groove part formed to the outer periphery thereof is formed to the rear of each of corrective power lenses 3, 3 made of a transparent synthetic resin formed as concave lenses and a flange part 6 having a diameter larger than that of said protruding step part 5 is formed to the outer peripheral part of each of said lenses 3, 3 on the surface side thereof. Screws 9 for tightening the partially notched ring-shaped clamp frames 7, 7 for fixing the corrective power lenses 3, 3 to a main body lens 1 are screwed in both notched end parts 8, 8 of the frames 7, 7. By this method, a wide visual field can be secured without widening the areas of the corrective power lenses 3, 3 to a necessary degree or more. Further, the region other than the face covered with the corrective power lenses 3, 3 can be used in a state properly protected by the main body lens 1 and the correction of sight and the protection of the face over a wide area are achieved by one protective lens.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a protective lens that is attached to goggles used for dustproofing, sports, etc., and a method for assembling the same.

(Prior Art) Conventionally, goggles equipped with protective lenses have been disclosed, for example, in Japanese Utility Model Application Publication No. 55-105415.

As shown in Fig. 8, this conventional type has a goggle body + 18
Inside the planar main lens 30 attached to the front surface of the
A pair of left and right vision correcting lenses 3e, 3e supported by an opaque frame 31 similar to a general eyeglass frame is attached.

According to this means, even people with poor eyesight do not need to use vision correction glasses in addition to goggles, which has the advantage of increasing the comfort of using goggles.

Further, when the vision correction lenses 3e, 3e are attached to the frame 31, it is necessary to match the distance between the centers (eye points) of the lenses 3e, 3e with the pupil distance of the user. Therefore, as a conventional means for this purpose, for example, as shown in FIG. 9, when the lens mounting pitch La of the frame 31 manufactured to a predetermined size and shape is 60 mm, and the pupil distance of the user is 54 mm, A lens body 32 formed into a circular shape or the like. 32 into vision correcting lenses 3e, 3e having a desired external shape, the actual situation was that the lens center 0 was eccentrically inwardly cut by Lb=3 mm.

(Problems to be Solved by the Invention) However, in the conventional vision correction lenses 3e and 3e supported by the opaque frame 31, the frame 31 has the disadvantage that the user's field of vision is narrowed. Good visibility cannot be obtained. This is a critical drawback in terms of safety when performing various tasks using goggles.

Further, the narrow frame 31 supporting the conventional lens 3e+3e cannot sufficiently protect the face. Therefore, the goggle body has a vision correction lens 3e+.
There is also a problem in that a means for providing the main lens 30 separately from the main lens 3e is required, which complicates the mounting structure.

Incidentally, it may be possible to use only the vision correction lenses 3e, 3e supported by the frame 31, attached to the goggle body li8, without using the king lens 30, or to use prescription vision correction lenses 3e, 3e. There is a certain limit to how large the area can be, and this has the disadvantage that it is not possible to secure a large field of view.

Furthermore, an important problem is that the vision correction lens 3el 3e compatible with the conventional frame 31 shown in FIG.
With this processing and mounting means, it is necessary to cut the vision correction lens in accordance with the pupillary distance of the user, making mass production impossible. In the end, vision correction lenses are produced on a per-order basis, and they also have the drawback of being extremely expensive to manufacture.

Therefore, the present invention widens the field of view when a protective lens with a vision correction function is attached to goggles or the like, enables appropriate protection of the face, and simplifies the production of the protective lens. The purpose is to reduce manufacturing costs by making it possible to mass produce.

(Means for Solving the Problems) The present invention attempts to solve the above-mentioned conventional problems by providing a protective lens with a vision correction function of a novel configuration that did not exist in the past, and a method for assembling the same. It is something.

That is, firstly, the present invention provides a transparent main body lens 1 formed with a pair of left and right holes 2l2, and a pair of left and right vision correction lenses fitted and attached to the holes 2, 2 of the main body lens 1. This is a protective lens for goggles, etc., which is composed of 3.3.

Second, the present invention is a protective lens for goggles, etc., in which the main body lens 1 is divided into left and right halves in the above structure.

Thirdly, as a method for assembling the above-mentioned protective lens, the present invention first includes a plurality of main body lenses 1 having different intervals L between the pair of left and right holes 2, 2, and having the same outer shape and a constant center position of the lenses. A plurality of vision correction lenses 3, 3 are positioned at different positions and have different dioptric powers, and from these, the main lens 1 whose distance L between the apertures 2.2 matches the desired pupillary distance and the desired one are selected. A method for assembling a protective lens for goggles, etc., which involves selecting lenses 3, 3 for vision correction according to their power, and then fitting and mounting the lenses 3, 3 for vision correction into the holes 2, 2 of the selected main body lens 1. It is.

(Function) Since the protective lens of the first configuration is equipped with the vision correction lenses 3, 3, there is no need to use separate vision correction glasses, or the vision correction lenses 3, 3 are provided. Since the lenses 3, 3 are attached to the transparent main body lens 1, a wide field of view can be secured without making the vision correction lenses 3, 3 unnecessarily wide in area. Moreover, since the main body lens 1 supports the vision correcting lenses 3, 3, the main body lens 1 can be used to appropriately protect parts other than the face covered by the vision correcting lenses 3, 3. According to the present invention, a single protective lens can correct vision and protect a wide area of the face.

Furthermore, the lenses 3, 3 for vision correction have holes 2 in the main body lenses.
, 2, by changing the formation position of the holes 2, 2, the distance between the vision correction lenses 3, 3 can be easily changed to correspond to the pupil distance of the user. Become something.

In addition, in the main body of the second configuration [Nonzu 1 or the one divided into left and right parts], since the protective lenses divided into left and right parts are substantially the same member, one protective lens can be replaced with two parts. If manufactured, a set of protective lenses can be manufactured, and the manufacturing thereof becomes easy.

Furthermore, in the method for assembling a protective lens according to the third structure, the main lens 1 and the vision correction lens 3.3 corresponding to the pupil distance and lens power of the user are selected and fitted together. The vision correction lens 3,
There is no need to cut the lens 3, and the main body lens 1 and the vision correction lens 3.3, which are prepared in advance, can be mass-produced.

(Example) Examples of the present invention will be described below.

First, an example of the protective lens will be explained. In Fig. 1,
Reference numeral 1 denotes a main body lens made of transparent synthetic resin, which has a substantially uniform overall thickness and does not have a vision correction function. Further, its outer shape is formed into an appropriate shape according to the shape of the opening of the goggles or the like to be worn. Reference numerals 2 and 2 indicate a pair of holes for attaching a vision correction lens, which are opened at two places on the left and right sides of the main lens 1.

3.3 is a lens for vision correction made of transparent synthetic resin formed as a concave lens, and on the back side thereof, as shown in the same figure (mouth), a protruding step part 5 having a concave groove part 4 on the outer periphery is formed. A flange portion 6 having a larger diameter than the protruding step portion 5 is provided on the outer peripheral portion on the front side.
or is formed. Reference numeral 7.7 is a ring-shaped retaining frame with a partial cutout for fixing the vision correction lenses 3, 3 to the main body lens 1, and a screw body 9 for tightening the retaining frame 7 is provided at both notched ends 8.8. is screwed on.

The protective lens according to this embodiment is made up of the above-mentioned components, and an example of its assembly method will be described next.

First, as shown in FIG. 3, a large number of main body lenses 1 are prepared in which the pitches of the holes 2.2 are varied in multiple stages from Ll, L2 to L. Specifically, 26 types are prepared in which the pitch is varied in 1 mm increments, for example, in the range of 55 mm to 80 mm.

All elements other than the pitch may have the same size and shape.

On the other hand, the power of vision correction lens 3.3 is 0.3.
Prepare 22 different types in steps of 25 increments. The outer shapes of the vision correcting lenses 3, 3 may all be the same, and the center points of the lenses may also be at the same position.

If we receive an order for protective lenses from a user in the above preparation state, the aperture 2,
It is sufficient to select the main body lens 1 with the lens 2 opened, and to select the vision correction lenses 3, 3 according to the visual acuity of the user, and to incorporate the vision correction lenses 3, 3 into the main body lens 1. Since the vision correction lenses 3, 3 have the same outer shape and the same lens center, they can be properly attached to the selected main body lens 1, and the distance between the lens centers is exactly the same as the pupil distance of the user. It is possible to create something that matches.

To assemble the lens, as shown in FIG. All you have to do is install it and tighten the screw body 9. Since the flange 6 and the stopper frame 7 of the vision correcting lens 3 support both sides of the main lens 1, the lens 3 can be mounted reliably.

Next, the protective lens 10 assembled as described above is used by being attached to a goggle body 11 as shown in FIG. 4, for example. The mounting operation involves bringing the outer periphery of the protective lens 10 into contact with the flange 13 that protrudes from the inner periphery of the opening 12 provided on the front surface of the goggle body 11, and using a separately prepared holding frame 14. The locking convex portions 15 protruding from the outer periphery of the holding frame 14 are disposed on the front surface of the goggle body 11 from the surface side, and are removably locked in the engagement recesses 169 of the goggle body 11. 99 10 You just have to put it on. Thereby, the protective lens 10 can be freely replaced with respect to the goggle body 11.

The holding frame 14 is entirely formed to have a narrow width S, and is provided with a wide-area hole 17 for visibility.

Further, a colored lens 16 is attached to the upper edge of the holding frame 14 so as to be rotatable up and down.

Since the goggles assembled as described above as shown in Fig. 5 are equipped with vision correction lenses 3, 3, it is of course unnecessary for people with poor eyesight to use separate glasses. Since the main lens 1 supporting the vision correcting lenses 3, 3 is transparent, its field of view is very wide and safety can be ensured.

Further, the goggles can be applied to work such as welding by lowering the colored lens 16, and the protective lens 10 can be covered and protected thereby. Furthermore, since the protective lens 10 is removable from the goggle body 11, it is possible to use a protective lens suitable for each user. Protective lens 1 including corrective lenses 3, 3
0, it is also possible to use a simple transparent protective lens that does not have a vision correction function.

In the above embodiment, one hole 2, 2 is provided in one main body lens 1, but the present invention is by no means limited to this.

For example, as shown in FIG. 6, the main body lens 1 according to the above embodiment
It is also possible to form the main body lens Ia, which is divided into left and right halves. In the main lens 1 shown in FIGS. 1 and 2, when performing drilling work by changing the pitch of the pair of holes 2, 2, two drilling tools are used to change the pitch of both of these drilling tools. Although necessary, since the two lenses Ia and Ia shown in FIG. 6 are substantially the same lens, a simple drilling operation can be performed using a single drilling tool.

Further, in the above embodiment, the shape of the vision correction lens 3 is such that the tapered surface portion 18 is formed on the inner lower edge (
(see Figure 2), two vision correction lenses 3
, 3, and both lenses 3.
, 3 are brought quite close to each other, these lenses do not protrude outside the main body lens 1, and there is an advantage that the lenses 3, 3 can be prevented from unduly contacting the user's nose. In other words, the specific shape of the vision correction lenses 3, 3 according to the present invention is by no means limited to this, and the design can be changed to various other shapes. Therefore, the specific shape of the hole 2 of the main lens 1 can also be changed as desired.

Furthermore, the present invention is not limited to the specific means for attaching the vision correction lens 3 to the main body lens 1 as described above. Instead of the bolts fastened with the screw body 9, a ring body made of an elastic member is attached to the back side of the vision correction lens 3 in a manner that prevents it from coming off, or the vision correction lens 3 is glued to the main body lens 1. It may be fixed using an agent. However, for practical purposes, it is preferable that the vision correction lens 3 be detachable from the main body lens 1.

In this way, the specific structure or design of the main body lens 1 and vision correction lenses 3, 3 according to the present invention can be changed as desired. In addition, the protective lens according to the present invention can be used by being attached to various types of goggles such as light shielding goggles for welding etc., dustproof goggles, goggles for sports such as skiing and diving, and can also be used with a helmet 19 as shown in FIG. It can also be applied as the protective lens 10 attached to the dust mask 20, and its specific use is not limited at all.

Furthermore, the method for assembling the protective lens according to the present invention, the specific number of main body lenses 1 to be prepared in advance, the dimensions for different hole pitches, etc. are not limited as in the above embodiments, and may be within the scope intended by the present invention. It can be changed freely.

(Effects of the Invention) As described above, the present invention provides a protective lens comprising a transparent main body lens having a pair of left and right holes, and a pair of left and right vision correction lenses that are fitted and attached to the holes of the main body lens. Because of this structure, there is no need to use general eyeglasses for vision correction in addition to the protective lenses, and there is no need to use ordinary eyeglasses for vision correction, as in the past, where the opaque frame that supports the vision correction lenses narrows the field of vision. The special effect is that it does not cause any inconvenience and ensures good visibility with a transparent main body lens without having to make the area of the vision correction lens larger than 13 to 14, making it ideal for various types of work and sports. We have come to have this.

In L, the main body lens supports the vision correction lens, so the main body lens can properly protect parts other than the face that are covered by the vision correction lens, and it is different from the conventional vision correction lens. To correct vision and protect a wide area of the face with a single protective lens without using a separate lens for face protection, to simplify the overall structure of goggles, etc., and to further improve usability. There are some effects that can be done.

Furthermore, since the present invention has a structure in which the vision correcting lens is fitted into the hole provided in the main body lens, the distance between the vision correcting lenses can be adjusted to match the user's pupil by simply changing the formation position of the hole. There is also the advantage that the position can be easily changed depending on the distance, and the manufacturing work can be easily done in accordance with the actual situation when using a vision correction lens.

Further, according to the means of dividing the main body lens into left and right halves of the present invention, these left and right halves of the protective lenses are substantially the same member, so if two of one protective lens are manufactured, one set is obtained. This makes it possible to manufacture protective lenses, which has the advantage of making the manufacturing process easier.

Furthermore, according to the method for assembling a protective lens of the present invention, the main body lens and vision correction lens corresponding to the pupil distance and lens power of the user are appropriately selected from a plurality of main body lenses and vision correction lenses. Since all you need to do is fit and assemble, there is no need for the complicated labor of cutting vision correction lenses taking into consideration the pupillary distance and other factors for each user's order, and the main body lens can be prepared in advance. and vision correction lenses can be mass-produced, and the manufacturing cost of each of these parts and the manufacturing cost of the ultimately obtained protective lens can be significantly reduced compared to conventional ones, and the protective lens according to the present invention There is an excellent practical benefit in that it can be provided at a low price.

[Brief explanation of drawings]

1 and 2 show 15 and 16 embodiments of the protective lens according to the present invention, FIG. 1(A) is a perspective view of the assembled state,
The figure (opening) is an enlarged sectional view taken along the line x1 in figure (a), and Figure 2 is an exploded perspective view. FIG. 3 is a front view showing a plurality of main body lenses. FIG. 4 is an exploded perspective view of the protective lens attached to the goggles. FIG. 5 is a cross-sectional view of goggles with protective lenses attached. FIG. 6 is a front view showing another embodiment of the main body lens. FIGS. 7A and 7B are explanatory diagrams showing other usage examples. 8 and 9 show the conventional example, FIG. 8 (A) is a front view, FIG.
The figure is an explanatory diagram of the frame and lens. 1...Wooden lens 2.2...Hole 3, 3...Lens for vision correction

Claims (1)

[Claims] 1. A transparent main body lens 1 formed with a pair of left and right holes 2, 2, and a pair of left and right vision correction lenses fitted and attached to the holes 2, 2 of the main body lens 1. A protective lens for goggles, etc., characterized by comprising: 3. 2. A protective lens for goggles, etc., as set forth in claim 1, characterized in that the main body lens 1 is divided into left and right halves. 3 A plurality of main body lenses 1 with different distances L between the pair of left and right holes 2, 2, and a plurality of vision correction lenses having the same external shape, with the lens center positioned at a fixed position, and with different powers. 3 and 3 are prepared, and from these, the main lens 1 whose distance L between the holes 2 and 2 matches the desired pupil distance and the vision correction lenses 3 and 3 of the desired power are selected, and then A method for assembling a protective lens for goggles or the like, which comprises fitting vision correction lenses 3, 3 into the holes 2, 2 of the selected main body lens 1.