JP6857389B2

JP6857389B2 - Eye protection

Info

Publication number: JP6857389B2
Application number: JP2017071437A
Authority: JP
Inventors: 富永　浩史; 浩史富永; 真孝浅田; 啓樹橋本; 稔生田
Original assignee: Yamamoto Kogaku Co Ltd
Current assignee: Yamamoto Kogaku Co Ltd
Priority date: 2017-03-31
Filing date: 2017-03-31
Publication date: 2021-04-14
Anticipated expiration: 2037-03-31
Also published as: JP2018171275A

Description

この発明は、交換可能な鼻ベルトを有する眼鏡、ゴーグルなどの眼用保護具、特にスイミングゴーグルに適した鼻ベルトを有する眼用保護具に関するものである。 The present invention relates to eye protectors such as eyeglasses and goggles having interchangeable nose belts, particularly eye protectors having nose belts suitable for swimming goggles.

従来、眼鏡、ゴーグルなどの眼用保護具においては、一対のレンズ体の相互の間隔を調節するために交換可能な鼻ベルトを有したものとしており、例えば特許文献１に示された「水泳用ゴーグル」や特許文献２に示された「スイミングゴーグル」のようなものが存在する。 Conventionally, eye protection devices such as eyeglasses and goggles have an interchangeable nose belt for adjusting the distance between a pair of lens bodies. For example, "for swimming" shown in Patent Document 1. There are such things as "goggles" and "swimming goggles" shown in Patent Document 2.

特許文献１に示された「水泳用ゴーグル」は、鼻ベルトの両端縁に嵌合柱が設けられ、この嵌合柱の一端は縮小頸部とされ、一端は円弧体とされている。そして、この「水泳用ゴーグル」は、ゴーグルのリムの側縁に嵌合柱の頸部と円弧体と嵌合可能な嵌合溝が凹設され、この嵌合溝は開口が上向きで側面と開口が連通し、底部が閉口とされており、嵌合柱と嵌合可能であり、嵌合柱の頸部は鼻ベルトとリムの離脱を防止し、安定した連結作用を有するとしている。 The "swimming goggles" shown in Patent Document 1 are provided with fitting columns at both end edges of the nose belt, and one end of the fitting column is a reduced neck and one end is an arc body. In this "swimming goggles", a fitting groove that can be fitted to the neck of the fitting column and the arc body is recessed on the side edge of the rim of the goggles, and this fitting groove has an opening facing upward and the side surface. The opening is open and the bottom is closed, and it can be fitted with the fitting column. The neck of the fitting column prevents the nose belt and rim from coming off, and has a stable connecting action.

さらに、前記「水泳用ゴーグル」は、嵌合柱と嵌合溝の間にさらに相互に嵌合可能な第１位置決め体と第２位置決め体が設けられている。そして、この「水泳用ゴーグル」では、第１位置決め体は、嵌合柱に設けられた凸粒とされ、第２位置決め体は、嵌合溝の凸粒に対応する部分に設けられた嵌合溝とされ、これにより嵌合柱と嵌合溝の嵌め止めがより確実に行われるとしている。 Further, the "swimming goggles" are provided with a first positioning body and a second positioning body that can be further fitted to each other between the fitting column and the fitting groove. In this "swimming goggles", the first positioning body is a convex grain provided on the fitting column, and the second positioning body is a fitting provided on a portion corresponding to the convex grain of the fitting groove. It is said that it is a groove, which allows the fitting column and the fitting groove to be more reliably fitted.

特許文献２に示された「スイミングゴーグル」は、アイカップの周壁の鼻部分領域に横方向に、硬質エラストマーからなる鼻ベルトの取り付け用ステイを突設し、この取り付け用ステイの先端部には抜け止め用突出部分を有するものとしている。そして、この「スイミングゴーグル」では、鼻ベルトは、抜け止め用突出部分を有する取り付け用ステイを挿入する孔部を有しており、この孔部に取り付け用ステイを横向きにして挿入し、回動させて抜け止め用突出部分で抜け止め状態とするようにしている。 In the "swimming goggles" shown in Patent Document 2, a stay for attaching a nose belt made of a hard elastomer is provided laterally in the nose portion region of the peripheral wall of the eyecup, and a stay for attaching the nose belt is projected at the tip of the stay for attachment. It is supposed to have a protruding part for preventing it from coming off. Then, in this "swimming goggles", the nose belt has a hole for inserting a mounting stay having a protruding portion for preventing it from coming off, and the mounting stay is inserted sideways into this hole and rotated. It is made to be in a retaining state at the protruding part for retaining.

したがって、前記「スイミングゴーグル」は、アイカップ自体の周壁の鼻部分領域には孔が存在せず、アイカップのクラックの発生が抑制され軽量性且つ耐久性に優れ、特に競技用には好適であり、またスイミングゴーグルの鼻ベルトの交換が容易で、且つ確実に固定され、さらにアイカップと鼻ベルトを成型するための金型の構造もシンプルにすることができるとしている。 Therefore, the "swimming goggles" have no holes in the nose region of the peripheral wall of the eyecup itself, suppress the occurrence of cracks in the eyecup, are lightweight and have excellent durability, and are particularly suitable for competition. In addition, the nose belt of the swimming goggles can be easily replaced and securely fixed, and the structure of the mold for molding the eyecup and the nose belt can be simplified.

実用新案登録第３０６６８８８号公報Utility Model Registration No. 3066888 特許第４１５８１２３号公報Japanese Patent No. 4158123

しかしながら、特許文献１に示された「水泳用ゴーグル」では、鼻ベルトの嵌合柱とリムの嵌合溝との嵌め止めがより確実に行われるには、嵌合柱も嵌合溝も長くする必要があり、この嵌め止め構造の省スペース化が困難であるという問題点を有していた。 However, in the "swimming goggles" shown in Patent Document 1, the fitting pillar and the fitting groove are long in order to more reliably fit the fitting pillar of the nose belt and the fitting groove of the rim. There is a problem that it is difficult to save space in this fitting structure.

そして、前記「水泳用ゴーグル」では、リムの嵌合溝は開口が上向きであるため、嵌め込んだ嵌合柱の上部がその開口から露出して外観が悪くなり、商品のデザインを損ねるという問題点を有していた。 In the above-mentioned "swimming goggles", since the opening of the fitting groove of the rim is upward, the upper part of the fitted fitting pillar is exposed from the opening and the appearance is deteriorated, which impairs the design of the product. Had a point.

さらに、前記「水泳用ゴーグル」では、第１位置決め体と第２位置決め体とを嵌合する場合に、両者の形状に逃げしろがないため嵌合し難く、無理に嵌合しようとすると、破損し兼ねないという問題点を有していた。 Further, in the above-mentioned "swimming goggles", when the first positioning body and the second positioning body are fitted, it is difficult to fit because there is no escape in the shapes of both, and if they try to fit forcibly, they will be damaged. It had the problem that it could not be done.

また、特許文献２に示された「スイミングゴーグル」では、アイカップに突設した取り付け用ステイを、鼻ベルトの孔部に挿入し回動操作を行うため、この回動操作を繰り返し行っているうちに、鼻ベルトの孔部が広がり、抜け止め状態を保つ力が弱くなることがあるという問題点を有していた。 Further, in the "swimming goggles" shown in Patent Document 2, since the attachment stay projecting from the eyecup is inserted into the hole of the nose belt and the rotation operation is performed, this rotation operation is repeated. In the meantime, there is a problem that the hole of the nose belt may widen and the force to keep the nose belt in the retaining state may be weakened.

そこで、この発明は、上記従来の眼用保護具が有する問題点を解決するものであり、鼻ベルトの交換が簡単であり、装着時に容易に脱落せず、一対のレンズ体と鼻ベルトとの嵌合部をコンパクトにすることにより、その嵌合構造の省スペース化を図ると共に、使用者がより快適な使用感を得ることができ、しかもの商品のデザインを損ねることのない眼用保護具を提供することを目的としてなされたものである。 Therefore, the present invention solves the problem of the above-mentioned conventional eye protection device, the nose belt is easy to replace, does not easily fall off when worn, and the pair of lens bodies and the nose belt By making the fitting part compact, the space for the fitting structure can be saved, and the user can get a more comfortable feeling of use, and the eye protection device that does not impair the design of the product. It was made for the purpose of providing.

そのため、この発明の眼用保護具は、一対のレンズ体１の相互の間隔を調節するための交換可能な鼻ベルト１１を有したものとしており、前記レンズ体１のそれぞれの内側端に嵌合溝２を設け、これら嵌合溝２にそれぞれ嵌め込まれる嵌合部１３を、鼻ベルト１１の間隔調節部１２の両側端に設けたものとし、前記嵌合部１３には、前記嵌合溝２に嵌め込まれる嵌合凸部１５が形成されると共に、この嵌合凸部１５の上端にカバー部１６が形成されているものとしている。そして、前記レンズ体１の嵌合溝２は、前壁部２ａと後壁部２ｂと内壁部２ｃと底壁部２ｄとから形成されたものとし、前壁部２ａ内面の奥側に前嵌合溝３ａが形成されると共に、後壁部２ｂ内面の奥側に後嵌合溝３ｂが形成され、前嵌合溝３ａおよび後嵌合溝３ｂは、その形状を、下に向かって先細りとした凹状略四角錐台形状にしている。さらに、前記鼻ベルト１１の嵌合凸部１５には、前面の外側に前記レンズ体１の前嵌合溝３ａに嵌め込まれる前嵌合凸部１５ａが形成されると共に、後面の外側に前記レンズ体１の後嵌合溝３ｂに嵌め込まれる後嵌合凸部１５ｂが形成され、前嵌合凸部１５ａおよび後嵌合凸部１５ｂは、その形状を、前記前嵌合溝３ａおよび後嵌合溝３ｂと同様な、下に向かって先細りとした凸状略四角錐台形状にし、これら前嵌合溝３ａおよび後嵌合溝３ｂに合致するようにしている。 Therefore, the eye protector of the present invention is provided with an interchangeable nose belt 11 for adjusting the mutual distance between the pair of lens bodies 1, and is fitted to the inner ends of the lens bodies 1. Grooves 2 are provided, and fitting portions 13 to be fitted into the fitting grooves 2 are provided on both side ends of the spacing adjusting portion 12 of the nose belt 11, and the fitting portion 13 is provided with the fitting groove 2. It is assumed that the fitting convex portion 15 to be fitted into the fitting convex portion 15 is formed, and the cover portion 16 is formed at the upper end of the fitting convex portion 15. The fitting groove 2 of the lens body 1 is assumed to be formed of a front wall portion 2a, a rear wall portion 2b, an inner wall portion 2c, and a bottom wall portion 2d, and is front-fitted on the inner surface side of the front wall portion 2a. Along with the formation of the joint groove 3a, the rear fitting groove 3b is formed on the inner surface side of the rear wall portion 2b, and the front fitting groove 3a and the rear fitting groove 3b are tapered downward in shape. It has a concave, substantially quadrangular pyramid shape. Further, the fitting convex portion 15 of the nose belt 11 is formed with a front fitting convex portion 15a fitted into the front fitting groove 3a of the lens body 1 on the outside of the front surface, and the lens is formed on the outside of the rear surface. A rear-fitting convex portion 15b to be fitted into the rear-fitting groove 3b of the body 1 is formed, and the front-fitting convex portion 15a and the rear-fitting convex portion 15b have the same shape as the front-fitting groove 3a and the rear-fitting convex portion 15b. Similar to the groove 3b, it has a convex substantially square cone trapezoidal shape that tapers downward so as to match the front fitting groove 3a and the rear fitting groove 3b.

この発明の眼用保護具において、前記レンズ体１の嵌合溝２の後壁部２ｂには係合凹部４が形成され、この係合凹部４に係合する係合凸部１４が前記鼻ベルト１１の側壁部１２ｃに形成されたものとし、前記係合凹部４と係合凸部１４との対向面が互いに曲面であるものとしている。 In the eye protection device of the present invention, an engaging concave portion 4 is formed in the rear wall portion 2b of the fitting groove 2 of the lens body 1, and the engaging convex portion 14 engaging with the engaging concave portion 4 is the nose. It is assumed that it is formed on the side wall portion 12c of the belt 11, and that the facing surfaces of the engaging concave portion 4 and the engaging convex portion 14 are curved surfaces of each other.

この発明の眼用保護具において、前記鼻ベルト１１は、硬度がショアＡ６５度〜ショアＤ７５度の合成樹脂または合成ゴムからなるものとしている。 In the eye protection device of the present invention, the nose belt 11 is made of a synthetic resin or synthetic rubber having a hardness of 65 degrees shore A to 75 degrees shore D.

この発明の眼用保護具において、前記鼻ベルト１１の間隔調節部１２は、上壁部１２ａと下壁部１２ｂと両側壁部１２ｃに囲まれた抜き孔１２ｄを有したものとしている。 In the eye protection device of the present invention, the interval adjusting portion 12 of the nose belt 11 is assumed to have a punch hole 12d surrounded by an upper wall portion 12a, a lower wall portion 12b, and both side wall portions 12c.

この発明の眼用保護具において、前記鼻ベルト１１の間隔調節部１２の上壁部１２ａの上面は、前記カバー部１６の上面と面一に連続形成したものとしている。 In the eye protection device of the present invention, the upper surface of the upper wall portion 12a of the interval adjusting portion 12 of the nose belt 11 is formed to be continuously formed flush with the upper surface of the cover portion 16.

この発明の眼用保護具は、以上に述べたように構成されているので、鼻ベルトの交換が簡単であり、装着時に容易に脱落せず、一対のレンズ体と鼻ベルトとの嵌合部をコンパクトにすることができるので、その嵌合構造の省スペース化を図ることができ、使用者がより快適な使用感を得ることができるものとなる。 Since the eye protection device of the present invention is configured as described above, the nose belt can be easily replaced, does not easily fall off when worn, and the fitting portion between the pair of lens bodies and the nose belt. Since it is possible to make the lens compact, it is possible to save space in the fitting structure, and the user can obtain a more comfortable feeling of use.

さらに、この発明の眼用保護具は、一対のレンズ体と鼻ベルトとの嵌合部が露出しないので外観が悪くなることがなく、商品のデザインを損ねることのないものとなる。 Further, the eye protection device of the present invention does not deteriorate the appearance because the fitting portion between the pair of lens bodies and the nose belt is not exposed, and does not impair the design of the product.

この発明の眼用保護具をスイミングゴーグル（ヘッドベルトは省略）として実施した態様を示す斜視図である。It is a perspective view which shows the embodiment of the eye protection device of this invention as swimming goggles (head belt is omitted). 図１に示すこの発明の眼用保護具の正面図である。It is a front view of the eye protection device of this invention shown in FIG. 図１に示すこの発明の眼用保護具の背面図である。It is a rear view of the eye protection device of this invention shown in FIG. 図１に示すこの発明の眼用保護具の平面図である。It is a top view of the eye protection device of this invention shown in FIG. 図３中のＡ−Ａ線によるこの発明の眼用保護具の断面図である。It is sectional drawing of the eye protection device of this invention by line AA in FIG. 図１に示すこの発明の眼用保護具を正面側から見た状態の分解斜視図である。FIG. 5 is an exploded perspective view of the eye protector of the present invention shown in FIG. 1 as viewed from the front side. 図１に示すこの発明の眼用保護具を背面側から見た状態の分解斜視図である。FIG. 5 is an exploded perspective view of the eye protector of the present invention shown in FIG. 1 as viewed from the back side. 図１に示すこの発明の眼用保護具の一方のレンズ体の平面図である。It is a top view of one lens body of the eye protection device of this invention shown in FIG. 図１に示すこの発明の眼用保護具の一方のレンズ体の側面図である。It is a side view of one lens body of the eye protection device of this invention shown in FIG. 図８中の円で囲んだ部分の拡大図である。It is an enlarged view of the part surrounded by a circle in FIG. 図９中のＢ−Ｂ線によるこの発明の眼用保護具の一方のレンズ体部の断面図である。It is sectional drawing of one lens body part of the eye protection device of this invention by line BB in FIG. 図１に示すこの発明の眼用保護具の鼻ベルトを正面側から見た状態の斜視図である。It is a perspective view of the nose belt of the eye protection device of this invention shown in FIG. 1 as seen from the front side. 図１２に示す鼻ベルトの正面図である。It is a front view of the nose belt shown in FIG. 図１２に示す鼻ベルトの背面図である。It is a rear view of the nose belt shown in FIG. レンズ体と鼻ベルトの嵌合部分を拡大して示す背面図である。It is a rear view which shows the fitting part of a lens body and a nose belt in an enlarged manner. 図１５中のＣ−Ｃ線によるレンズ体と鼻ベルトの嵌合部分の断面図である。It is sectional drawing of the fitting part of the lens body and a nose belt by the CC line in FIG. 図１５中のＤ−Ｄ線によるレンズ体と鼻ベルトの嵌合部分の断面図である。It is sectional drawing of the fitting part of the lens body and a nose belt by the DD line in FIG.

以下、この発明の眼用保護具を実施するための形態を図面に基づいて詳細に説明する。ここでの実施形態は、スイミングゴーグルを例に説明するが、これに限られるものではないのは勿論である。なお、以下の説明文中における前後方向、左右方向、上下方向は、眼用保護具を装着した状態を基準としている。 Hereinafter, a mode for carrying out the eye protection device of the present invention will be described in detail with reference to the drawings. The embodiment here will be described by taking swimming goggles as an example, but it is needless to say that the embodiment is not limited to this. In the following explanation, the front-back direction, the left-right direction, and the up-down direction are based on the state in which the eye protection device is worn.

図１〜５に示したスイミングゴーグルは、一対のレンズ体１の相互間に、両者の間隔を調節するための交換可能な鼻ベルト１１を有したものとすると共に、頭部への装着用のヘッドベルト（図示せず）を有したものとしている。 The swimming goggles shown in FIGS. 1 to 5 are assumed to have an interchangeable nose belt 11 for adjusting the distance between the pair of lens bodies 1 and for wearing on the head. It is assumed that it has a head belt (not shown).

前記レンズ体１は、図６〜１１に示したように、前面のレンズ部１ａと、このレンズ部１ａの周端から後方に延設された周壁部１ｂと、この周壁部１ｂに取り付けられて装着時に顔面に当接するクッション部１ｃとからなるものとしている。 As shown in FIGS. 6 to 11, the lens body 1 is attached to a front lens portion 1a, a peripheral wall portion 1b extending rearward from the peripheral end of the lens portion 1a, and the peripheral wall portion 1b. It is composed of a cushion portion 1c that comes into contact with the face when worn.

前記レンズ体１のそれぞれの内側端には、図８、１０に示したように、前壁部２ａと後壁部２ｂと内壁部２ｃと底壁部２ｄとから形成される嵌合溝２が設けられている。この嵌合溝２には、前壁部２ａ内面の奥側に前嵌合溝３ａが形成されると共に、後壁部２ｂ内面の奥側に後嵌合溝３ｂが形成され、さらに後壁部２ｂの側端には、図７、９に示したように、係合凹部４が形成されている。そして、前嵌合溝３ａおよび後嵌合溝３ｂは、その形状を、下に向かって先細りとした凹状略四角錐台形状にしている。また、係合凹部４は、後に述べるように、その縦断面形状を、角を丸めた略台形状にしている。 As shown in FIGS. 8 and 10, each inner end of the lens body 1 has a fitting groove 2 formed from a front wall portion 2a, a rear wall portion 2b, an inner wall portion 2c, and a bottom wall portion 2d. It is provided. In the fitting groove 2, a front fitting groove 3a is formed on the inner surface side of the front wall portion 2a, a rear fitting groove 3b is formed on the inner surface side of the rear wall portion 2b, and the rear wall portion is further formed. As shown in FIGS. 7 and 9, an engaging recess 4 is formed at the side end of 2b. The front fitting groove 3a and the rear fitting groove 3b have a concave substantially quadrangular pyramid shape that is tapered downward. Further, as will be described later, the engaging recess 4 has a substantially trapezoidal shape with rounded corners in its vertical cross-sectional shape.

前記鼻ベルト１１は、図１２〜１４に示したように、前面および後面を円弧形状としており、上壁部１２ａと下壁部１２ｂと両側壁部１２ｃに囲まれた抜き孔１２ｄを有した間隔調節部１２と、この間隔調節部１２の両側端に設けた嵌合部１３とからなるものとしている。これら嵌合部１３は、前記レンズ体１のそれぞれの内側端に設けられた嵌合溝２にそれぞれ嵌め込まれる。そして、この鼻ベルト１１は、一対のレンズ体１の相互間の間隔に応じて、間隔調節部１２を数段階の寸法に設定したものが用意されている。なお、前記間隔調節部１２の抜き孔１２ｄは、後に述べるように鼻ベルト１１にあらゆる方向から作用するひねりの力を逃がすためのものであるが、この抜き孔１２ｄを設けることなく、間隔調節部１２自体を嵌合部１３よりも肉厚を薄くしたり、細くするなどして、鼻ベルト１１にあらゆる方向から作用するひねりの力を逃がすようにしてもよい。 As shown in FIGS. 12 to 14, the nose belt 11 has an arc shape on the front surface and the rear surface, and has an interval 12d surrounded by an upper wall portion 12a, a lower wall portion 12b, and both side wall portions 12c. It is composed of an adjusting portion 12 and fitting portions 13 provided at both side ends of the interval adjusting portion 12. These fitting portions 13 are fitted into the fitting grooves 2 provided at the inner ends of the lens bodies 1, respectively. The nose belt 11 is prepared with the spacing adjusting unit 12 set to several levels of dimensions according to the spacing between the pair of lens bodies 1. The punching hole 12d of the spacing adjusting unit 12 is for releasing the twisting force acting on the nose belt 11 from all directions as described later, but the spacing adjusting section 12d is not provided. The thickness of the 12 itself may be made thinner or thinner than that of the fitting portion 13 so that the twisting force acting on the nose belt 11 from all directions is released.

前記両側壁部１２ｃのそれぞれの外側には、図１４に示したように、レンズ体１の嵌合溝２の後壁部２ｂに形成された係合凹部４に係合する係合凸部１４が形成されたものとしている。この係合凸部１４と前記係合凹部４の対向面は、互いに曲面にするか、少なくとも何れか一方を曲面にし、両者の係合幅を数ｍｍにしている。例えば、図１５に示したように、係合凸部１４と前記係合凹部４のそれぞれの縦断面形状を、角を丸めた略台形状にし、それらの角の丸みＲを１〜５ｍｍにし、それらの角の傾斜角αを０〜６０度にすることにより曲面にしており、両者の係合幅Ｗを０．５〜２．０ｍｍにしている。 On the outside of each of the side wall portions 12c, as shown in FIG. 14, an engaging convex portion 14 that engages with an engaging concave portion 4 formed in the rear wall portion 2b of the fitting groove 2 of the lens body 1 Is formed. The facing surfaces of the engaging convex portion 14 and the engaging concave portion 4 are curved with each other, or at least one of them is curved so that the engaging width between the two is several mm. For example, as shown in FIG. 15, the vertical cross-sectional shapes of the engaging convex portion 14 and the engaging concave portion 4 are formed into a substantially trapezoidal shape with rounded corners, and the rounded corners R of the corners are set to 1 to 5 mm. The inclination angle α of these corners is set to 0 to 60 degrees to form a curved surface, and the engagement width W between the two is set to 0.5 to 2.0 mm.

前記嵌合部１３には、レンズ体１の嵌合溝２に嵌め込まれる嵌合凸部１５が形成されると共に、この嵌合凸部１５の上端にカバー部１６が形成されたものとしている。そして、このカバー部１６の上面は、前記上壁部１２ａの上壁面と面一に連続形成したものとしている。 It is assumed that the fitting portion 13 is formed with a fitting convex portion 15 to be fitted into the fitting groove 2 of the lens body 1, and a cover portion 16 is formed at the upper end of the fitting convex portion 15. The upper surface of the cover portion 16 is formed to be flush with the upper wall surface of the upper wall portion 12a.

前記嵌合凸部１５は、前面の外側に前記レンズ体１の前嵌合溝３ａに嵌め込まれる前嵌合凸部１５ａが形成されると共に、後面の外側に前記レンズ体１の後嵌合溝３ｂに嵌め込まれる後嵌合凸部１５ｂが形成されたものとしている。そして、前嵌合凸部１５ａおよび後嵌合凸部１５ｂも、その形状を、前記前嵌合溝３ａおよび後嵌合溝３ｂと同様な、下に向かって先細りとした凸状略四角錐台形状にし、これら前嵌合溝３ａおよび後嵌合溝３ｂに合致するようにしている。 In the fitting convex portion 15, a front fitting convex portion 15a to be fitted into the front fitting groove 3a of the lens body 1 is formed on the outside of the front surface, and the rear fitting groove of the lens body 1 is formed on the outside of the rear surface. It is assumed that the post-fitting convex portion 15b to be fitted into the 3b is formed. The front fitting convex portion 15a and the rear fitting convex portion 15b also have a convex substantially quadrangular pyramid whose shape is tapered downward in the same shape as the front fitting groove 3a and the rear fitting groove 3b. The shape is adjusted so as to match the front fitting groove 3a and the rear fitting groove 3b.

そして、前記鼻ベルト１１は、硬度がショアＡ６５度〜ショアＤ７５度、好ましくはショアＤ５０度〜ショアＤ６５度に調整された合成樹脂または合成ゴムからなるものとしている。具体的な材質としては、ポリアミド系エラストマー、ポリエステル系エラストマー、ウレタン系エラストマーなどにするのが好ましい。前記鼻ベルト１１の硬度が、ショアＡ６５度よりも柔らかいと、前記レンズ体１の嵌合溝２に鼻ベルト１１の嵌合部１３を嵌め込んだときに簡単に外れ易くなり、ショアＤ７５度より硬いと、前記レンズ体１の嵌合溝２に鼻ベルト１１の嵌合部１３を嵌め込み難くなったり、無理に嵌め込んだ場合には外れなかったり、レンズ体１側を変形させるなどの弊害がある。なお、前記レンズ体１は、鼻ベルト１１と同一の硬度か、または高い硬度にすればよく、合成樹脂に限らず、金属などにすることもできる。 The nose belt 11 is made of a synthetic resin or rubber whose hardness is adjusted to shore A 65 degrees to shore D 75 degrees, preferably shore D 50 degrees to shore D 65 degrees. As a specific material, it is preferable to use a polyamide-based elastomer, a polyester-based elastomer, a urethane-based elastomer, or the like. When the hardness of the nose belt 11 is softer than the shore A of 65 degrees, it is easy to come off when the fitting portion 13 of the nose belt 11 is fitted into the fitting groove 2 of the lens body 1, and the shore D is 75 degrees or more. If it is hard, it may be difficult to fit the fitting portion 13 of the nose belt 11 into the fitting groove 2 of the lens body 1, it may not come off if it is forcibly fitted, or the lens body 1 side may be deformed. is there. The lens body 1 may have the same hardness as the nose belt 11 or a higher hardness, and may be made of metal or the like as well as synthetic resin.

以上のように構成されたこの発明の眼用保護具において、鼻ベルト１１を交換するには、以下に述べるようにして行われる。 In the eye protective device of the present invention configured as described above, the nose belt 11 is replaced as described below.

先ず、一方のレンズ体１と鼻ベルト１１を指で摘んで、図２に矢印で示したように、レンズ体１の外端を上方に回すようにして、このレンズ体１を引っ張れば、鼻ベルト１１の嵌合凸部１５を一方のレンズ体１の嵌合溝２から簡単に外すことができる。 First, one of the lens bodies 1 and the nose belt 11 is picked up with a finger, and as shown by the arrow in FIG. 2, the outer end of the lens body 1 is turned upward and the lens body 1 is pulled to pull the nose. The fitting convex portion 15 of the belt 11 can be easily removed from the fitting groove 2 of one lens body 1.

すなわち、鼻ベルト１１の硬度が、先に述べたように調整されており、さらにレンズ体１の嵌合溝２の前嵌合溝３ａおよび後嵌合溝３ｂと、これらに嵌め込まれている鼻ベルト１１の嵌合凸部１５の前嵌合凸部１５ａおよび後嵌合凸部１５ｂが、いずれも下に向かって先細りとした略四角錐台形状にしているので、レンズ体１の外端を上方に回すようにすれば、嵌合溝２から鼻ベルト１１の嵌合凸部１５を簡単に引き上げることができ、さらにレンズ体１の係合凹部４と鼻ベルト１１の係合凸部１４もそれぞれの角を丸めた略台形状にしているので、その係合が簡単に解除されることになる。したがって、前記したように鼻ベルト１１の嵌合凸部１５を一方のレンズ体１の嵌合溝２から簡単に外すことができる。 That is, the hardness of the nose belt 11 is adjusted as described above, and further, the front fitting groove 3a and the rear fitting groove 3b of the fitting groove 2 of the lens body 1 and the nose fitted therein. Since the front fitting convex portion 15a and the rear fitting convex portion 15b of the fitting convex portion 15 of the belt 11 both have a substantially square cone shape that tapers downward, the outer end of the lens body 1 is formed. By turning it upward, the fitting convex portion 15 of the nose belt 11 can be easily pulled up from the fitting groove 2, and the engaging concave portion 4 of the lens body 1 and the engaging convex portion 14 of the nose belt 11 are also formed. Since each corner is rounded to form a substantially trapezoidal shape, the engagement can be easily disengaged. Therefore, as described above, the fitting convex portion 15 of the nose belt 11 can be easily removed from the fitting groove 2 of one lens body 1.

そして、もう一方のレンズ体１と鼻ベルト１１を指で摘んで、同様の手順の操作を行えば、鼻ベルト１１の嵌合凸部１５をもう一方のレンズ体１の嵌合溝２から簡単に外すことができる。 Then, if the other lens body 1 and the nose belt 11 are picked up with fingers and the same procedure is performed, the fitting convex portion 15 of the nose belt 11 can be easily removed from the fitting groove 2 of the other lens body 1. Can be removed.

次に、前記レンズ体１から外した鼻ベルト１１とは、間隔調節部１２の寸法の違うものを用意し、この鼻ベルト１１と一方のレンズ体１を指で摘まんで、図６に矢印で示したように、レンズ体１の嵌合溝２の上方から、この嵌合溝２にその鼻ベルト１１の嵌合凸部１５を差し込むようにすれば、この嵌合凸部１５を一方のレンズ体１の嵌合溝２に簡単に嵌め込むことができる。 Next, prepare a nose belt 11 having a different dimension from the nose belt 11 removed from the lens body 1, pick the nose belt 11 and one lens body 1 with a finger, and use an arrow in FIG. As shown, if the fitting convex portion 15 of the nose belt 11 is inserted into the fitting groove 2 from above the fitting groove 2 of the lens body 1, the fitting convex portion 15 can be inserted into one of the lenses. It can be easily fitted into the fitting groove 2 of the body 1.

すなわち、この場合も、鼻ベルト１１の硬度が、先に述べたように調整されており、前記前嵌合溝３ａおよび後嵌合溝３ｂ、前嵌合凸部１５ａおよび後嵌合凸部１５ｂが、いずれも下に向かって先細りとした略四角錐台形状にしているので、レンズ体１の嵌合溝２に鼻ベルト１１の嵌合凸部１５を差し込むようにすれば、簡単に嵌め込むことができ、さらに前記係合凹部４と係合凸部１４もそれぞれの角を丸めた略台形状にしているので、その係合が簡単に行えることになる。したがって、前記したように鼻ベルト１１の嵌合凸部１５を一方のレンズ体１の嵌合溝２に簡単に嵌め込むことができる。 That is, also in this case, the hardness of the nose belt 11 is adjusted as described above, and the front fitting groove 3a and the rear fitting groove 3b, the front fitting convex portion 15a and the rear fitting convex portion 15b are adjusted. However, since each of them has a substantially quadrangular pyramid shape that tapers downward, it can be easily fitted by inserting the fitting convex portion 15 of the nose belt 11 into the fitting groove 2 of the lens body 1. Further, since the engaging concave portion 4 and the engaging convex portion 14 also have a substantially trapezoidal shape with rounded corners, the engagement can be easily performed. Therefore, as described above, the fitting convex portion 15 of the nose belt 11 can be easily fitted into the fitting groove 2 of one lens body 1.

そして、もう一方のレンズ体１と鼻ベルト１１を指で摘んで、同様の手順の操作を行えば、鼻ベルト１１の嵌合凸部１５をもう一方のレンズ体１の嵌合溝２に簡単に嵌め込むことができる。 Then, if the other lens body 1 and the nose belt 11 are picked up with fingers and the same procedure is performed, the fitting convex portion 15 of the nose belt 11 can be easily inserted into the fitting groove 2 of the other lens body 1. Can be fitted into.

したがって、この発明の眼用保護具は、鼻ベルト１１の交換がスムーズに簡単に行えるものとなる。 Therefore, in the eye protection device of the present invention, the nose belt 11 can be replaced smoothly and easily.

なお、この発明の眼用保護具では、鼻ベルト１１の嵌合凸部１５をレンズ体１の嵌合溝２に嵌め込んだ場合に、嵌合凸部１５の上端に形成されたカバー部１６が、前記嵌合溝２に嵌合凸部１５を嵌め込んだ部分の上方を覆うので、その部分が露出することなく、しかもこのカバー部１６の上面は、前記上壁部１２ａの上壁面と面一に連続形成したものとし、両者の間に段差をなくしたものとしているので、外観が悪くなるようなこともない。 In the eye protection device of the present invention, when the fitting convex portion 15 of the nose belt 11 is fitted into the fitting groove 2 of the lens body 1, the cover portion 16 formed at the upper end of the fitting convex portion 15 is formed. However, since it covers the upper part of the portion in which the fitting convex portion 15 is fitted into the fitting groove 2, that portion is not exposed, and the upper surface of the cover portion 16 is the upper wall surface of the upper wall portion 12a. Since it is formed so as to be flush with each other and there is no step between the two, the appearance does not deteriorate.

さらに、この発明の眼用保護具は、装着時においても、鼻ベルト１１がレンズ体１から容易に脱落しないものとなる。 Further, in the eye protection device of the present invention, the nose belt 11 does not easily fall off from the lens body 1 even when worn.

すなわち、この発明の眼用保護具では、鼻ベルト１１の硬度が、先に述べたように調整され、さらに間隔調節部１２に抜き孔１２ｄを有したものとしているので、鼻ベルト１１にあらゆる方向から作用するひねりの力を逃がすことができ、快適な装着感が得られると共に、鼻ベルト１１がレンズ体１から容易に脱落しないものとなる。 That is, in the eye protection device of the present invention, the hardness of the nose belt 11 is adjusted as described above, and the interval adjusting portion 12 has a hole 12d, so that the nose belt 11 has a hole 12d in all directions. The twisting force acting from the lens body 1 can be released, a comfortable wearing feeling can be obtained, and the nose belt 11 does not easily fall off from the lens body 1.

この発明の眼用保護具は、以上に述べたように構成されているので、先にも述べたように、鼻ベルト１１の交換が簡単であり、装着時に容易に脱落せず、一対のレンズ体１と鼻ベルト１１との嵌合部をコンパクトにしているので、その嵌合構造の省スペース化を図ることができ、使用者がより快適な使用感を得ることができると共に、安定した嵌合状態を長期間保つことができる。 Since the eye protection device of the present invention is configured as described above, as described above, the nose belt 11 is easy to replace, does not easily fall off when worn, and is a pair of lenses. Since the fitting portion between the body 1 and the nose belt 11 is made compact, the fitting structure can be saved in space, the user can obtain a more comfortable feeling of use, and the fitting is stable. The combined state can be maintained for a long period of time.

さらに、この発明の眼用保護具は、一対のレンズ体１と鼻ベルト１１との連結部が露出しないので外観が悪くなることがなく、商品のデザインを損ねることのないものとなる。 Further, the eye protection device of the present invention does not deteriorate the appearance because the connecting portion between the pair of lens bodies 1 and the nose belt 11 is not exposed, and does not impair the design of the product.

また、この発明の眼用保護具は、前記係合凹部４と係合凸部１６との対向面が曲面であるので、これらを係合したり、係合を解除する操作をスムーズに行うことができ、レンズ体１や鼻ベルト１１を破損してしまうこともない。 Further, in the eye protection device of the present invention, since the facing surface between the engaging concave portion 4 and the engaging convex portion 16 is a curved surface, the operation of engaging and disengaging them can be smoothly performed. The lens body 1 and the nose belt 11 are not damaged.

１レンズ体
２嵌合溝
２ａ前壁部
２ｂ後壁部
２ｃ内壁部
２ｄ底壁部
３ａ前嵌合溝
３ｂ後嵌合溝
４係合凹部
１１鼻ベルト
１２間隔調節部
１２ａ上壁部
１２ｂ下壁部
１２ｃ側壁部
１２ｄ抜き孔
１３嵌合部
１４係合凸部
１５嵌合凸部
１５ａ前嵌合凸部
１５ｂ後嵌合凸部
１６カバー部 1 Lens body 2 Fitting groove 2a Front wall part 2b Rear wall part 2c Inner wall part 2d Bottom wall part 3a Front fitting groove 3b Rear fitting groove 4 Engagement recess 11 Nose belt 12 Spacing adjustment part 12a Upper wall part 12b Lower wall Part 12c Side wall part 12d Drilling hole 13 Fitting part 14 Engaging convex part 15 Fitting convex part 15a Front fitting convex part 15b Rear fitting convex part 16 Cover part

Claims

It is assumed that it has an interchangeable nose belt (11) for adjusting the distance between the pair of lens bodies (1), and a fitting groove (2) is provided at the inner end of each of the lens bodies (1). Fitting portions (13) to be provided and fitted into these fitting grooves (2) are provided at both side ends of the spacing adjusting portion (12) of the nose belt (11), and the fitting portion (13) is provided. Is formed with a fitting convex portion (15) to be fitted into the fitting groove (2), and a cover portion (16) is formed at the upper end of the fitting convex portion (15) .
The fitting groove (2) of the lens body (1) is assumed to be formed of a front wall portion (2a), a rear wall portion (2b), an inner wall portion (2c), and a bottom wall portion (2d). A front fitting groove (3a) is formed on the inner surface side of the wall portion (2a), and a rear fitting groove (3b) is formed on the inner surface side of the rear wall portion (2b). The shape of the rear fitting groove (3a) and the rear fitting groove (3b) is a concave substantially quadrangular pyramid shape that tapers downward.
The fitting convex portion (15) of the nose belt (11) is formed with a front fitting convex portion (15a) fitted into the front fitting groove (3a) of the lens body (1) on the outside of the front surface. At the same time, a rear fitting convex portion (15b) fitted into the rear fitting groove (3b) of the lens body (1) is formed on the outer side of the rear surface, and the front fitting convex portion (15a) and the rear fitting convex portion are formed. (15b) has a convex substantially square cone trapezoidal shape that tapers downward, similar to the front fitting groove (3a) and the rear fitting groove (3b), and these front fitting grooves. An eye protector characterized in that it is adapted to match (3a) and the rear fitting groove (3b).

An engaging concave portion (4) is formed in the rear wall portion (2b) of the fitting groove (2) of the lens body (1), and the engaging convex portion (14) that engages with the engaging concave portion (4). Is formed on the side wall portion (12c) of the nose belt (11), and the facing surfaces of the engaging concave portion (4) and the engaging convex portion (14) are curved with each other. The eye protective device according to claim 1.

The eye protective device according to claim 1 or 2, wherein the nose belt (11) is made of a synthetic resin or a synthetic rubber having a hardness of 65 degrees to shore D of 75 degrees.

The interval adjusting portion (12) of the nose belt (11) is assumed to have a punched hole (12d) surrounded by an upper wall portion (12a), a lower wall portion (12b), and both side wall portions (12c). The eye protective device according to claim 3 , wherein the eye protective device is characterized in that.

Upper surface of the upper wall portion (12a) of the interval adjusting portion of the nose belt (11) (12) according to claim 1, characterized in that it is assumed that the continuously formed on the upper surface flush with the cover portion (16) The eye protection device according to any one of 4 to 4.