JP3973977B2 - Swimming goggles - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to swimming goggles.
[0002]
[Prior art]
Conventionally, various swimming goggles for competitions that have been devised to reduce running water resistance have been proposed. For example, Japanese Patent Laid-Open No. 11-33139 discloses an example thereof. In the swimming goggles disclosed in this publication, the resistance is reduced by smoothly connecting the outer surfaces of the front peripheral wall portion and the rear peripheral wall portion constituting the lens peripheral wall portion.
[0003]
[Problems to be solved by the invention]
However, in the known swimming goggles, an annular step is formed between the cushion portion that comes into contact with the wearer's face and the rear end surface of the rear peripheral wall portion to which the cushion portion is attached. At this level difference, the flowing water tends to be turbulent, and there is a problem that the flowing water resistance is not necessarily reduced.
[0004]
The present invention has been made to solve the above-described conventional problems, and an object thereof is to provide swimming goggles capable of reducing the flowing water resistance in the lens peripheral wall portion.
[0005]
[Means for Solving the Problems]
In order to solve the above-described problem, the present invention is directed to a pair of lens portions arranged in a horizontal direction, a peripheral wall portion extending rearward from the periphery of each of the lens portions, and an inner end portion of the pair of lens portions. A swimming goggle including a nose belt portion that connects the two and a headband portion that connects the outer ends of the pair of lens portions.
[0006]
In such a swimming goggles, the present invention is characterized in that the peripheral wall portion is located on the outer periphery of the inner peripheral wall portion and an inner peripheral wall portion that abuts a rear end portion around the eye of the wearer of the swimming goggles. An outer peripheral wall portion formed so as to surround at least a part of the inner peripheral wall portion, and the outer peripheral wall portion is located from at least one of the periphery of the inner peripheral wall portion and above and below the lens portion. Extending gradually away from the outer peripheral surface of the inner peripheral wall portion toward the rear of the lens portion, a slope having no step is formed from the lens portion to the wearer's face , and the outer peripheral wall portion is The wall thickness gradually decreases toward the rear.
[0007]
The swimming goggles of the present invention have the above-described features, but can be formed to have the following features. That is, the rear end portion of the outer side peripheral wall portion may be made to a position behind the rear end portion of the inner circumferential wall at least a part, or so as to be positioned in front of the rear end portion of the inner peripheral wall It may be.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
The details of the swimming goggles according to the present invention will be described with reference to the accompanying drawings.
[0009]
A swimming goggles 1 shown in a perspective view in FIG. 1 has a pair of lens parts 2 made of a hard material arranged in the front and horizontally, and a peripheral wall part 3 extending rearward from the periphery of the lens part 2. The inner end portions 4 a of the lens portion 2 are connected by a nose belt portion 5 that is integral with the peripheral wall portion 3. However, the nose belt portion 5 may be formed such that both end portions are detachably attached to the inner end portion 4 a of the lens portion 2. The outer end portion of the lens portion 2 forms a buckle portion 4b extending rearward, and a headband portion 6 is attached to the buckle portion 4b so as to be adjustable in length. Such swimming goggles 1 are formed symmetrically with respect to a center line CC that bisects the length of the nose belt portion 5.
[0010]
FIG. 2 is a diagram showing a cross section taken along the line II-II in FIG. The II-II line is parallel to the center line CC, and vertically cuts the lens unit 2 at a position where the vertical dimension is the largest. The peripheral wall portion 3 extends rearward from the entire periphery 2a of the lens portion 2 so that the rear end portion 7b contacts the periphery of the eye of the goggles wearer, and the inner peripheral wall portion 7 surrounds the inner peripheral wall portion 7. The outer peripheral wall portion 8 extends rearward from the front end portion 7 a of the peripheral wall portion 7.
[0011]
The inner peripheral wall portion 7 of the illustrated example has a front end portion 7a formed of a hard plastic material integrally with the lens portion 2, and a rear end portion 7b formed of a flexible elastic material to form a cushion pad. In the inner peripheral wall portion 7, a fitting groove 7 c is formed on the outer peripheral surface of the front end portion 7 a, and the protruding portion 7 d formed on the inner peripheral surface of the outer peripheral wall portion 8 can be removed or removed from the groove 7 c. It is mated. The rear end portion 7b of the inner peripheral wall portion 7 has a portion that comes into contact with the goggle wearer and is gently bent outward.
[0012]
As apparent from FIG. 2, the outer peripheral wall portion 8 is formed integrally with the rear end portion 7 b of the inner peripheral wall portion 7. The front end portion 8a of the outer peripheral wall portion 8 is in close contact with the front end portion 7a of the inner peripheral wall portion 7 from the outside. The outer peripheral wall 8 expands outward so as to be farther away from the inner peripheral wall 7 as the rear end portion 8b moves rearward. Further, the rear end portion 8b is gradually thinner toward the rear. On the II-II line cut surface, the dimension from the front surface of the lens part 2 to the rear end 7e of the inner peripheral wall part 7 is A, and the dimension from the lens part 2 to the rear end 8c of the outer peripheral wall part 8 is B. Is larger than the dimension A, and the rear end 8 c of the outer peripheral wall portion 8 is located further rearward than the rear end 7 e of the inner peripheral wall portion 7.
[0013]
The outer peripheral wall portion 8 is formed in a peripheral portion located at least in an upper portion and a lower portion of the lens portion 2 in the periphery of the inner peripheral wall portion 7 extending over the entire periphery 2 a of the lens portion 2. However, in the illustrated example, the outer peripheral wall portion 8 is also formed in the portion near the inner end portion 4a and the portion near the buckle 4b of the lens portion 2. In the swimming goggles 1 having such an outer peripheral wall portion 8, a slope having no step extending from the peripheral edge 2 a of the lens portion 2 toward the face of the goggles wearer on the outer side of the inner peripheral wall portion 7 at and near the II-II line. Is formed.
[0014]
FIG. 3 is a view similar to FIG. 2 showing a state when the swimming goggles 1 thus formed are worn. When the swimming goggles 1 are worn, the rear end portion 7b of the inner peripheral wall portion 7 is in close contact with the wearer's eyes. At this time, the rear end portion 8b of the outer peripheral wall 8 abuts against the face 10 of the wearer. The outer peripheral wall portion 8 connects the lens portion 2 to the face 10 outside the inner peripheral wall portion 7 with a slope having no step, so that water flows smoothly, for example, in the direction of arrow 17 during swimming. In swimming goggles that do not have the outer peripheral wall portion 8, the lens peripheral wall portion does not form a smooth slope with the face, so that the water flow that hits the peripheral wall portion tends to be turbulent, thereby increasing the water resistance. .
[0015]
FIG. 4 is also a drawing similar to FIG. 2 showing an example of the embodiment of the present invention. The outer peripheral wall portion 8 in the swimming goggles 1 is formed so that the thickness of the rear end portion 8b gradually decreases in the rearward direction and then increases again in the vicinity of the rear end 8c. By doing in this way, the outer peripheral wall portion 8 may have a rigidity higher than that of the example of FIG. 2 and can prevent the outer peripheral wall portion 8 from being turned away from the face.
[0016]
In the present invention, the outer peripheral wall portion 8 formed so as to form a substantially ring shape in the illustrated example may be divided into an upper portion and a lower portion of the lens portion 2. The outer peripheral wall portion 8 may be integrally formed of the same hard material as the lens portion 2 in addition to being integrally formed of the same flexible elastic material as the rear end portion 7b of the inner peripheral wall portion 7. In this case, it is preferable that the outer peripheral wall portion 8 has the rear end 8c positioned forward of the rear end 7e of the inner peripheral wall portion 7. The outer peripheral wall portion 8 is formed only of the rear end portion 8b with a flexible elastic material, or is formed separately from the inner peripheral wall portion 7 and is attached to the outer surface of the inner peripheral wall portion 7 by a well-known conventional joining means. May be. The outer surface of the outer peripheral wall portion 8 can be formed smoothly, and a number of dimple-shaped recesses can be formed to smooth the water flow on the outer surface. The inner peripheral wall portion 7 can be integrally formed of a hard material with a rear end portion 7b made of a flexible elastic material together with the front end portion 7a.
[0017]
【The invention's effect】
According to the swimming goggles according to the present invention, the slope from the lens part to the vicinity of the face of the goggles wearer is connected by a slope having no step, so that the disturbance of the water flow that easily occurs in the vicinity of the goggles during swimming is prevented, and the water resistance is reduced. Can be small.
[Brief description of the drawings]
FIG. 1 is a perspective view of swimming goggles.
FIG. 2 is a view showing a cut surface along the line II-II in FIG. 1;
FIG. 3 is a view similar to FIG. 2 showing the flow of water.
FIG. 4 is a view similar to FIG. 2 showing an example of the embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Swimming goggles 2 Lens part 2a Perimeter of lens part 3 Perimeter wall part 4a Inner end part 4b Buckle part (outer end part)
5 Nose belt part 6 Headband part 7 Inner peripheral wall part 7a Front end part 7b Rear end part 7e Rear end 8 Outer peripheral wall part 8a Front end part 8b Rear end part 8c Rear end

Claims (3)

A pair of lens portions arranged in a horizontal direction, a peripheral wall portion extending rearward from the periphery of each of the lens portions, a nose belt portion connecting inner end portions of the pair of lens portions, and an outer end portion of the pair of lens portions In swimming goggles with a headband that connects the two
The peripheral wall portion includes an inner peripheral wall portion that abuts a rear end portion around the eyes of the wearer of the swimming goggles, and an outer side that is formed outside the inner peripheral wall portion and surrounds at least a part of the inner peripheral wall portion. A peripheral wall portion, and the outer peripheral wall portion is located around at least one of the upper and lower sides of the lens portion in the periphery of the inner peripheral wall portion toward the rear of the lens portion. An inclined surface that extends gradually away from the outer surface and has no step between the lens portion and the wearer's face, and the outer peripheral wall portion gradually decreases in thickness toward the rear. Features swimming goggles.   The swimming goggles according to claim 1, wherein at least a part of a rear end portion of the outer peripheral wall portion is located rearward of a rear end portion of the inner peripheral wall portion.   The swimming goggles according to claim 1 or 2, wherein a rear end portion of the outer peripheral wall portion is positioned forward of a rear end portion of the inner peripheral wall portion.

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