JPH1133139A - Swimming goggle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To decrease the resistance of a flowing water, enhance fitting properties and secure a wide field of vision. SOLUTION: This swimming goggle is constructed of a forward peripheral wall part 7 which forms an area in parallel with a lens face 12 within the range of at least, two third the diameter, in the horizontal direction, of the lens face 12 from the inner lateral end of the lens face 12 and 1 mm or more and 3 mm or less distant from the lens face 12, out of a lens peripheral wall part 6, and further, a curved face part 15 15 mm or more long, in the vertical direction and a side part 14 having an area 12 mm or more long, in the vertical direction, formed outside the forward peripheral part 7. In addition, the forward peripheral wall part 7 and the side part 14 are of a hard transparent material, and a backward peripheral wall part 8 and a cushioning part 3 are connected to the rear parts of the forward peripheral wall part 7 and the side part 14, so that the outer surfaces of these parts are flush with each other. Further, the inclined angle of the outer surface of the lens peripheral wall part 6 with the lens face 12 is 65 deg. or less.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to swimming goggles.

[0002]

2. Description of the Related Art A general swimming goggle is composed of a pair of left and right eyecups, a cushion provided on each eyecup, and a nose belt connecting the left and right eyecups, which reduces fluid resistance and fits around a face. Various proposals have been made on the improvement of the performance.

[0003] Japanese Utility Model Laid-Open No. 6-48715 also focuses on reducing the resistance to flowing water, and forms a circumferential groove recessed from the outer surface toward the inner side of the peripheral wall at the rear end of the peripheral wall of the eyecup. The wall constituting the rear surface of the peripheral groove is a mounting wall for mounting the cushion portion, and the mounting wall does not protrude greatly from the outer surface of the peripheral wall of the eyecup. It does not protrude very much, and can reduce the resistance of water. However, some of the products in which the present invention is implemented have some gaps or steps at the transition portion between the peripheral portion of the eyecup and the cushion portion. In this case, there is a possibility that the resistance of flowing water increases.

[0004] On the other hand, in the case of focusing on the improvement of the fitting property, it is found that all the peripheral wall portions other than the lens portion are made of an elastomer which is a flexible opaque material.
This results in a better fit to the rim of the eye and a relatively low resistance to flowing water. However, there is a problem that the elastomer material has poor transparency due to its characteristics, and visibility is poor in up, down, left and right.

[0005] In addition, Japanese Utility Model Laid-Open No. 5-35120 has improved the fitting property while securing the visibility.
This is an example in which the rear end surface of the peripheral wall portion of the eyecup is a plane substantially parallel to the lens surface, and as a result, the length of the cushion portion in the front-rear direction becomes longer outward in the left-right direction, thereby improving the fit. Although the view is secured by the transparent material of the eyecup peripheral wall, the outer peripheral wall in the left and right direction is filled with cushion material and the field of view is limited as far as that part is concerned I can't deny it.

[0006]

As swimming goggles for swimming athletes, it is, of course, desired to reduce the flow resistance and improve the fit, but it is also necessary to ensure a wide field of view. It is necessary that the movement of the swimmer be always in view. However, the above-mentioned prior art has not always satisfied these three problems. Therefore, an object of the present invention is to provide swimming goggles that can secure a wide field of view in addition to reducing running water resistance and improving fit.

[0007]

According to the first aspect of the present invention, there is provided a pair of left and right eyecups 1 each having a lens portion 5 and a lens peripheral wall portion 6 extending obliquely rearward from the peripheral edge of the lens portion. And a nose belt 2 for connecting the left and right eyecups 1 provided on the inner surface of the lens. The inner peripheral end of the lens peripheral wall 6 is adjacent to the lens 5 and extends along the horizontal diameter of the lens surface 12. 10 to lens surface 12
Is parallel to the lens surface 12 in at least two-thirds of the horizontal diameter of the lens, and 1 mm from the lens surface 12.
The boundary surface 9 and the lens surface 12 at a distance of not less than 3 mm
And the area between the front peripheral wall portion 7 and the boundary surface 9
A curved portion extending from the parallel portion to bend outwardly and terminating at an outer end portion of the eyecup, and having a side portion within the curved surface;
Has a region of 15 mm or more in the vertical direction A at the lens surface outer end 11 and 12 mm or more in the vertical direction B 6 mm outside the lens surface outer end 11 along the eyecup surface, and the front peripheral wall portion 7 and the side. Part 14
Is the same hard transparent material as the lens unit 5.
With the front peripheral wall portion 7 and the side portion 1
The rear peripheral wall part 8 and the cushion part 3 are connected to the rear of the front peripheral part 4, and the front peripheral wall part 7, the side part 14, and the rear peripheral wall part 8 have their outer surfaces flush with each other, and
The lens surface 1 in a cross-section on a vertical surface 16 that includes the center point of the lens surface 12 and is perpendicular to the lens surface 12
2 is a swimming goggle in which the inclination angle C of the outer surface of the lens peripheral wall 6 with respect to 2 is smaller than 65 °.

According to a second aspect of the present invention, there is provided the swimming goggle according to the first aspect, wherein the rear peripheral wall portion is formed of the same material as the cushion portion and is integrally formed with the cushion portion.

According to a third aspect of the present invention, there is provided the swimming goggles according to the first aspect, wherein the lens portion 5 and the front peripheral wall portion 7 and the side portion 14 which are made of the same hard transparent member as the lens portion are molded in advance. Insert into the mold,
This is swimming goggles in which a cushion part material is injected into a mold cavity to integrally form a lens part 5, a lens peripheral wall part 6, and a cushion part 3.

[0010]

According to the present invention, at least the horizontal diameter of the lens surface 12 from the inner end 10 of the lens surface along the horizontal diameter of the lens surface 12 is adjacent to the lens portion 5 of the lens peripheral wall portion 6. It is parallel to the lens surface 12 in a two-thirds range, and 1 mm from the lens surface 12 and the lens surface 12.
The boundary surface 9 and the lens surface 12 at a distance of not less than 3 mm
Is defined as a front peripheral wall portion 7, and the front peripheral wall portion 7 is made of the same hard transparent material as the lens. The reason why the distance is set to 1 mm or more is that if the distance is less than 1 mm, the visibility in the vertical direction is insufficient, and when the rear peripheral wall portion 8 is connected to the front peripheral wall portion 7, the distance is applied to the inner side (rear surface) of the lens portion. Too close to the anti-fog coating
This is because there is a possibility that the coating may be adversely affected. on the other hand,
The reason why the distance is set to 3 mm or less is that if the distance exceeds 3 mm, a portion occupied by a flexible material such as the material of the cushion portion 3 connected thereto becomes small, and there is a possibility that the fit may be reduced.

Next, the boundary surface 9 is connected to the parallel portion 13.
And has a curved portion 15 extending outward from the lens and terminating at an outer end portion 17 of the eyecup, and a side portion 14 is provided within the range of the curved surface. An area of 15 mm or more in the vertical direction A and 12 mm or more in the vertical direction B 6 mm outside the lens portion outer end 11 along the eyecup surface from the outer end 11 of the lens part;
The side part 14 is made of the same hard transparent material as the lens part 5. As described above, in the portion near the outer end of the eyecup, the side portion 14 is
The cushion is defined within the range of the curved surface that extends outwardly from the outside and ends at the outer end portion 17 of the eyecup, and does not expand beyond this range. The portion occupied by the flexible material such as the part 3 material can be increased, and the fit can be improved.

Further, the effective field of view at the side part 14 is
15 mm or more in the vertical direction A at the boundary between the outer end 11 of the lens surface and the side portion 14, and 12 mm or more in the vertical direction B at a distance of 6 mm along the eyecup surface from the boundary. As a result, a wide field of view is obtained. If the effective field of view at the side portion 14 is smaller than these values, it becomes difficult to grasp the side scene while looking directly at the front during swimming. It should be noted that the field of view passing through the lens peripheral wall section 6 only needs to be capable of grasping an approximate image, and does not need to be as sharp as the field of view passing through the lens section 5, so that a certain degree of distortion is allowed.

The front peripheral wall portion 7, the side portions 14, and the rear peripheral wall portion 8 have their outer surfaces flush with each other to lower the flowing water resistance. If the surfaces are not flush with each other and a step or a gap between the portions is left, the water flow does not flow smoothly at the portions and the resistance value increases. In the present invention, the lens surface 12 includes the center point and the lens surface 12
The inclination angle C of the outer surface of the lens peripheral wall portion 6 with respect to the lens surface 12 in the cross section on the vertical surface 16 perpendicular to
°, the resistance to the water flow in the direction parallel to the lens surface 12 decreases, and the flowing water resistance value decreases.

By forming the entire rear peripheral wall portion 8 from the same material as the material of the cushion portion 3, the flexible portion becomes large, and the fit to the face when wearing goggles can be further improved. That is, according to the configuration of the first aspect, a necessary and sufficient field of view is secured, the running water resistance value is reduced while maintaining the normal fitting property, and the fitting property to the face can be further improved by the configuration of the second aspect. It is.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. In FIG. 1, the swimming goggles include a pair of left and right eye cups 1, a nose belt 2 for connecting the eye cups 1, a cushion portion 3 to be in contact with the face, a wearing belt 4, and the like.

As shown in FIGS. 1 and 2, the eye cup 1 includes a front lens part 5 and a lens peripheral wall part 6 extending rearward from the periphery of the lens part 5. 6 further includes a front peripheral wall portion 7 adjacent to the peripheral edge of the lens portion.
And a rear peripheral wall portion 8 at the rear side. Front peripheral wall part 7
The rear peripheral wall portion 8 is connected and united at the boundary surface 9, and the outer surfaces of both are flush with each other. The rear peripheral wall portion 8 is connected to the cushion portion 3 located behind the rear peripheral wall portion 8.

The lens portion 5 and the front peripheral wall portion 7 are integrally formed of a hard transparent material such as polycarbonate and cellulose propionate. On the other hand, the rear peripheral wall portion 8 and the cushion portion 3 are made of the same material, that is, a nylon-based material.
It is made of a soft synthetic resin such as a urethane-based or styrene-based elastomer or silicone. The swimming goggles of the present invention include a lens part 5 previously inserted in a mold.
By injecting the soft synthetic resin into the same mold cavity with respect to the front peripheral wall portion 7 and the side portion 14,
The lens part 5 and the front peripheral wall part 7 and the rear peripheral wall part 8 and the cushion part 3 can be formed by integrally molding. Each component of the eye cup 1 and the cushion 3
Can be integrated by bonding using an adhesive, but it is preferable to integrally mold as described above in terms of strong integration and good finish.

A boundary surface 9 between the front peripheral wall portion 7 and the rear peripheral wall portion 8 has a distance corresponding to the horizontal diameter of the lens, that is, a distance from the inner end 10 of the lens surface to the outer end 11 of the lens surface. At least two-thirds of the distance from the end 11 is parallel to the lens surface 12, and the distance between the boundary surface 9 and the lens surface 12 of the parallel portion is 2 mm. Can be selected within the range of 1 mm to 3 mm.

In the range from the parallel portion 13 to the outside in the left-right direction, the curved portion 15 bends substantially along the outer front surface of the eyecup 1 and terminates at the outer end portion 17 of the eyecup. It is desirable from the design point that the transition from the parallel portion 13 to the curved surface 15 is a smooth curve. The outer surfaces of the front peripheral wall portion 7, the side portions 14, and the rear peripheral wall portion 8 are also flush. The side portion 14 is located within the range of the curved surface portion 15.
The transparent effective visual field in the vertical distance A at the boundary between the lens surface outer end 11 and the side portion 14 is 15 mm or more,
The vertical distance B is 12 mm or more at a position 6 mm outside the front surface of the side portion 13 from the boundary.

The outer surface of the lens peripheral wall 6 with respect to the lens surface 12 in a cross section on a vertical plane (the vertical plane including the optical axis in the case of a spherical lens) that includes the center point of the lens surface and is perpendicular to the lens surface. The inclination angle C is smaller than 65 °. As for the connection between the nose belt 2 and the eyecup 1 and the connection between the eyecup 1 and the belt 4, a known technique is appropriately selected. Adopt something.

[0021]

[Table 1]

A swimming goggle according to this embodiment;
Table 1 shows the results obtained by mounting a conventional swimming goggle on a human head model and measuring the flowing water resistance value in flowing water. As can be seen from Table 1, the resistance value of this example was smaller than that of the conventional product at any flow rate. Table 1
"Conventional product 1" refers to a type in which a cushion molded by an injection molding method is fitted to an eye cup, and "Conventional product 2" refers to a cushion formed by punching a sponge-like sheet into an eye cup with an adhesive. The bonded product, “conventional product 3”, is only the eyecup without a cushion, which is used for swimming, and the numerical value is 1.0 for the nude state (only human model) at each flow rate. It is the resistance value when performing.

[0023]

By setting the boundary surface 9 between the front peripheral wall portion 7 and the rear peripheral wall portion 8 and specifying the effective visual field at the side portion 14,
The necessary visibility was secured. Further, the configuration is such that the inclination angle C of the outer surface of the lens peripheral wall portion 6 with respect to the lens surface 12 is limited,
In addition, since the front peripheral wall portion 7, the side portion 14, and the rear peripheral wall portion 8 were flush with each other, as shown in Table 1, the flowing water resistance value could be reduced. Furthermore, since the rear peripheral wall portion 8 is made entirely of the same material as the cushion portion 3, the flexible portion becomes large, so that good fit to the face when wearing goggles is achieved.

[Brief description of the drawings]

FIG. 1 is a bottom view showing one embodiment.

FIG. 2 is a front view showing one embodiment.

FIG. 3 is a sectional view taken along line XX of FIG. 1 showing one embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Eye cap 2 Nasal belt 3 Cushion part 4 Belt 5 Lens part 6 Lens peripheral wall part 7 Front peripheral wall part 8 Rear peripheral wall part 9 Boundary surface 10 Lens surface inner end 11 Lens surface outer end 12 Lens surface 13 Parallel part 14 Side part 15 Curved surface Part 16 Vertical surface 17 Eyecup outer end

Continued on the front page (72) Inventor Tomoyuki Yatsushiro 3-25-8 Chodo, Higashiosaka-shi, Osaka Inside Yamamoto Kogaku Co., Ltd.

Claims (3)

[Claims] 1. A pair of left and right eyecups (1) each having a lens part (5) and a lens peripheral wall part (6) extending obliquely rearward from the periphery of the lens part, and a cushion part provided on each eyecup (1). (3) and a nose belt (2) for connecting the left and right eye cups (1), and a horizontal diameter of a lens surface (12) adjacent to the lens portion (5) in the lens peripheral wall portion (6). Is parallel to the lens surface (12) in a range of at least two-thirds of the horizontal diameter of the lens surface (12) from the lens surface inner end (10) along with the lens surface (12), and at least 1 mm from the lens surface (12). A region between the boundary surface (9) and the lens surface (12) at a distance of 3 mm or less is defined as a front peripheral wall portion (7), and the boundary surface (9) is connected to the parallel portion (1).
3) has a curved portion (15) extending outward from the curved portion and ending at the outer end portion (17) of the eyecup, and a side portion (14) is provided within a range of the curved surface; 1
4) The vertical direction A is 15 mm or more in the vertical direction A at the outer end (11) of the lens surface, and 12 mm in the vertical direction B at 6 mm outside the lens part outer end (11) along the eyecup surface.
mm or more, and the front peripheral wall portion (7) and the side portion (14) are integrally formed with the lens portion (5) as the same hard transparent material as the lens portion (5). ) And the rear peripheral wall part (8) and the cushion part (3) are connected to the rear of the side part (14), and the front peripheral wall part (7), the side part (14) and the rear peripheral wall part (8) are connected to the outside. So that the surface is flush,
And a cross section on a vertical plane (16) including the center point of the lens surface (12) and perpendicular to the lens surface,
A swimming goggle, wherein the inclination angle C of the outer surface of the lens peripheral wall (6) with respect to the lens surface (12) is smaller than 65 °. 2. The swimming goggles according to claim 1, wherein the rear peripheral wall portion (8) is made of the same material as the cushion portion (3) and is integrally formed with the cushion portion (3). 3. A mold cavity in which a lens part (5) molded in advance, a front peripheral wall part (7) and a side part (14) made of the same hard transparent member as the lens part are inserted into a mold. The swimming goggles according to claim 1, wherein the cushion part material is injected into the inside to integrally form the lens part (5), the lens peripheral wall part (6) and the cushion part (3).