JP4236600B2 - Underwater glasses - Google Patents

Description

  The present invention relates to underwater glasses suitable for use in swimming, swimming, and the like.

2. Description of the Related Art Conventionally, underwater glasses are known in which the inner end portions of a pair of lens portions are connected by a nose belt portion, the outer end portions are connected by a headband portion, and the length of the headband portion can be adjusted by a buckle. For example, underwater eyeglasses disclosed in Japanese Patent Application Laid-Open No. 2002-45439 (Patent Document 1) have a headband portion hanging portion and a projection portion that function as a buckle at each outer end portion of a pair of lens portions. The headband portion extending from the back of the head of the wearer of the underwater glasses toward the front of the head is intermittently formed in the length direction of the headband portion after being turned around and folded back by the hanging portion. The required length is adjusted by inserting the protrusion of the buckle into the through hole.
JP 2002-45439 A

  The underwater eyeglasses described in Patent Document 1 can easily adjust the length of the headband part by simply inserting and removing the protrusion of the buckle from the through hole formed in the headband part. On the other hand, if the protrusion is not securely inserted, the headband portion may come off from the outer end portion of the lens member. In addition, the tension acting on the headband when wearing underwater glasses is concentrated on the peripheral portion of the through-hole into which the protrusion is inserted. There is a case.

  According to the present invention, in the underwater glasses as described in Patent Document 1, the headband portion that is folded back toward the rear of the head at the outer end portion of the lens portion is not easily detached from the outer end portion. It is an object of the present invention to make improvements and to make improvements so that peripheral portions of the through holes formed in the headband portion are not damaged.

Means for Solving the Problems and Effects of the Invention

  In order to solve the above problems, the present invention is directed to a pair of lens portions, a nose belt portion, and a headband portion, and the inner end portions of the lens portions are separated by the nose belt portion. The underwater glasses are connected to each other, and the outer end portions of the lens unit are connected by the headband unit so that the length of the headband unit can be adjusted.

In such underwater eyeglasses, the present invention is characterized as follows.
The headband portion is in a state of being hung on the head of the wearer of the underwater glasses, and a band central portion that contacts the back of the head and both bands extending from the back of the head toward the front of the head A buckle is attached to each of the end portions of the two bands.
The buckle is located behind the head rather than at least one of a frame part, a partition part partitioning the inside of the frame part, a plurality of band insertion holes formed by the partition part, and the band insertion hole. Formed protrusions.
The two band end portions include a first portion extending from the rear of the head to the outer end portion of the lens portion, a second portion folded back from the outer end portion toward the rear of the head, and the first A thick portion intermittently formed in the length direction of the two portions and extending in the width direction of the second portion; and a plurality of through holes formed in the thick portion and removably inserted into the protrusions. Including.
At least one of the thick portions abuts on the partition portion in a state of being inserted into the band insertion hole.

In the underwater glasses according to the present invention, the first portion and the second portion of both band portions are inserted into the band insertion hole of the buckle, so that they overlap each other, and the overlapping portion and the through hole inserted into the projection portion Thus, it is possible to support the tension applied to the headband portion when wearing underwater glasses. Furthermore, when the thick part formed in the 2nd part of the headband part contact | abuts to the partition part of a buckle, the tension | tensile_strength concerning a headband part can be supported further. Therefore, even if a tension acts on the headband portion in which the protruding portion is inserted into the through hole, the peripheral portion of the through hole is hardly damaged. In such underwater glasses, the headband part cannot be easily detached from the outer end part of the lens part even when the projection part is not completely inserted into the through hole of the headband part when wearing it. .

In another preferred embodiment of the present invention, each of the first portions is bent in the length direction of the headband portion when being passed through the insertion hole of the buckle, and The two thick portions are in contact with the bent portion in the direction from the rear of the head toward the front of the head .

In the underwater glasses according to the present invention, the thick portion formed in the second portion of the end portion of the headband portion contacts the bent portion of the first portion from the back of the head. Therefore, when underwater glasses are worn and tension is applied to the headband part, the tension is supported by the thick part abutting on each other and the bent part, and the through hole into which the protrusion is inserted It is difficult to reach the peripheral part. Therefore, in the underwater glasses, the peripheral portion of the through hole in the headband portion is not damaged even if the wear is repeated.

  The details of the underwater glasses according to the present invention will be described below with reference to the accompanying drawings.

The underwater glasses 1 shown in a perspective view in FIG. 1 have a pair of lens parts 2, a nose belt part 3, and a headband part 4. The lens unit 2 includes a lens 6 formed of a hard resin such as polycarbonate resin or acrylic resin, a frame 7 formed integrally with the lens 6, a silicon resin or urethane resin that is in close contact with the face of the underwater glasses wearer, natural And a pad 8 made of a soft elastic material such as rubber. The frame 7 has an inner end portion 11 located near the nose portion (not shown) of the underwater glasses wearer and an outer end portion 12 located closer to the ear portion (not shown). The nose belt portion 3 is preferably detachably attached to the inner end portion 11 of each lens portion 2 and connects the inner end portions 11 of the lens portion 2 to each other. The headband portion 4 is hung around the head of the underwater eyeglass wearer, and in a worn state, the headband portion 4 is in contact with the back of the head, and both the headband portion 4 extends from the back of the head to the front of the head. It has a band end 17 and a buckle 18 attached to each of the band end 17. The end portion 17 has a second portion (hereinafter referred to as a folded portion 21 ) that passes through a belt loop 19 formed in the outer end portion 12 of the lens portion 2 and extends toward the rear of the head portion. In the folded portion 21, a plurality of through holes 22 for adjusting the length of the headband portion 4 are arranged intermittently in the length direction of the headband portion 4. The buckle 18 is made of a hard plastic such as polycarbonate resin, acrylic resin, or ABS resin, and has a protrusion 23 that can be inserted into and removed from the through hole 22 of the headband portion 4.

2 and 3 are a sectional view taken along the line II-II in FIG. 1 and a perspective view of the buckle 18. In FIG. 2, a part of the underwater glasses 1 is shown in a sectional view. In the underwater glasses 1, the lens unit 2 and the pad 8 are integrally formed, and the pad 8 does not come off the lens unit 2. In the buckle 18 in the headband part 4, the band end part 17 is inserted by partitioning the first frame part 31 and the second frame part 32 by the first partition part 33 and the second partition part 34. The first, second, and third band insertion holes 26, 27, and 28 are formed in order from the rear of the head of the underwater glasses wearer to the front. In FIG. 3, each of the first frame portion 31, the second frame portion 32, the first partition portion 33, and the second partition portion 34 extending in the vertical direction extends in parallel with each other in the length direction of the headband portion 4. It is connected to the frame part 35a and the fourth frame part 35b. The first frame portion 31 is formed with a protrusion 23, and the protrusion 23 has an oval top portion 36 (see FIG. 1) and a cylindrical shaft portion 37, and the shaft portion 37 has a length. L. In FIG. 2, the end portion 17 of the headband portion 4 has a first portion (hereinafter referred to as a portion extending toward the front of the head ) inside the buckle 18, and a wide first insertion hole 26 and a width. After being passed through the narrow second insertion hole 27, the lens portion 2 is folded back at the outer end portion 12. The folded portion 21 of the end portion 17 is passed from the inner side of the buckle 18 to a third insertion hole 28 having substantially the same width as the first insertion hole 26, and in a portion extending further rearward, of the plurality of through holes 22. One protrusion 23 is inserted into one. The projecting portion 23 functions as a stopper that keeps the headband portion 4 at a required length when the underwater eyeglasses 1 are worn, and at the same time suppresses the swinging motion of the folded portion 21, and is folded back from the first frame portion 31. It extends so as to intersect the portion 21.

FIG. 4 is a perspective view of the end portion 17 in the headband portion 4. The end portion 17 has an outer surface 17a, an inner surface 17b, and an end surface 17c. The outer surface 17a is unevenly formed by the thick portion 41, and the inner surface 17b is formed smoothly. Thick portion 41 extends over the entire width of the end portion 17, the shape of definitive to the end face 17c is formed in a trapezoidal or arc having a width W. Each of the thick portions 41 is formed with a through hole 22 penetrating between the outer surface 17a and the inner surface 17b. The thick portion 41 has a strength of the peripheral portion of the through hole 22 at the end portion 17. Contributes to improvement. Further, the preferable thick portion 41 has a thickness T that is substantially the same as the length L of the shaft portion 37 of the projection 23, and the diameter of the through hole 22 is substantially the same as the diameter of the shaft portion 37. When the protruding portion 23 is inserted into the through hole 22, the protruding portion 23 comes into close contact with the top portion 36 and the shaft portion 37 of the protruding portion 23 as shown in FIG. 2. Further, as shown in FIG. 2, in the vicinity of the projection 23, the end 42 of the headband portion 4 extends from the first insertion hole 26 to the second insertion hole 27 toward the front of the head. On the other hand, the thick part 41a of the thick part 41 is in contact with the back of the head. In such a headband part 4, when the underwater glasses 1 are worn and a tension in the direction toward the front of the head indicated by the arrow A (see FIG. 2) acts on the folded part 21, the tension is applied to the folded part 21. A thick portion 41 extending across the entire width is supported where it abuts against the portion 42 of the end portion 17. Therefore, the tension does not concentrate on the peripheral portion of the through hole 22 in which the protrusion 23 is inserted, and the peripheral portion is not damaged. The folded portion 21 is not damaged around the through hole 22. Further, since the tension is supported by the entire width of the folded portion 21 in which the thick portion 41 is formed, the folded portion 21 extends substantially uniformly in the entire width so that only the vicinity of the through hole 22 is present. There is no significant elongation. However, the present invention can be implemented using the headband portion 4 having a uniform and flat thickness without the thick portion 41 acting as described above. Although not as remarkable as the underwater glasses 1 in FIG. 1, the flat end portions 17 overlap each other in the vicinity of the first partition portion 33 to support the tension generated when the underwater glasses 1 are worn, and the protrusions 23 are inserted. Concentration of tension on the peripheral edge portion of the through hole 22 can be avoided.

  FIG. 5 is a view similar to FIG. 3 showing one embodiment of the buckle 18 that can be used in the underwater glasses 1 according to the present invention. In the buckle 18, the protruding portion 23 is formed in the second partition portion 34. In the underwater glasses 1 using this buckle 18, as shown in FIG. 2, when the end portion 17 of the headband portion 4 is passed through the first, second, and third insertion holes 26, 27, and 28. In the vicinity of the third insertion hole 28, the thick portion 41 b of the thick portion 41 (see FIG. 2) contacts the forward portion of the end portion 17, so that the buckle 18 illustrated in FIG. Although it is not remarkable, it can avoid that tension | tensile_strength concentrates on the peripheral part of the through-hole 22 in which the projection part 23 is inserted.

  According to the present invention, it is possible to manufacture underwater spectacles in which the headband portion does not easily come off from the outer end portion of the lens portion.

The perspective view of underwater glasses. The II-II arrow directional view of FIG. The perspective view of a buckle. The partial perspective view of a headband part. The figure similar to FIG. 3 which shows the one aspect | mode of a buckle.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Underwater glasses 2 Lens part 3 Nose belt part 4 Headband part 11 Inner end part 12 Outer end part 17 End part 18 Buckle 21 Folded part 22 Through-hole 23 Protrusion part 26 Band insertion hole 27 Band insertion hole 28 Band insertion hole 41 Meat Thick part 42 part

Claims (2)

A pair of lens portions, a nose belt portion, and a headband portion, the inner end portions of the lens portion are connected by the nose belt portion, and the outer end portions of the lens portion are connected by the headband portion; Underwater glasses that can adjust the length of the headband part,
The headband portion is in a state of being hung on the head of the wearer of the underwater glasses, and a band central portion that contacts the back of the head and both bands extending from the back of the head toward the front of the head And a buckle is attached to each of the two band ends,
The buckle is located behind the head rather than at least one of a frame part, a partition part partitioning the inside of the frame part, a plurality of band insertion holes formed by the partition part, and the band insertion hole. Formed protrusions,
The two band end portions include a first portion extending from the rear of the head to the outer end portion of the lens portion, a second portion folded back from the outer end portion toward the rear of the head, and the first A thick portion intermittently formed in the length direction of the two portions and extending in the width direction of the second portion; and a plurality of through holes formed in the thick portion and removably inserted into the protrusions. Including
At least one of the thick portions is in contact with the partition portion in a state where the thick portion is inserted into the band insertion hole . Each of the first portions is in a state of being bent in the length direction of the headband portion when being passed through the insertion hole of the buckle, and the thick portion of the second portion is in the bent state. The underwater eyeglasses according to claim 1, wherein the underwater eyeglasses are in contact with a portion of the head in a direction from the rear of the head toward the front of the head .

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