JP2008149061A - Sole for antistatic shoe - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide antistatic shoes for which it is hard to stumble at a semiconductor plant or the like. <P>SOLUTION: On the toe side of a shoe sole, in the peripheral end 1a surrounding the area P where each finger including the toe is placed, ground contact blocks 2, 3, 4, 5, 6 are projectingly provided along the edge 1' of the peripheral end 1a, wherein the ground contact blocks 2, 3, 4, 5, 6 make the ground contact faces 2a, 3a, 4a, 5a, 6a into a rugged shape. Then, a curved face is made in the end edge that continues to the peripheral side faces 2b, 3b, 4b, 5b, 6b of the ground contact blocks 2, 3, 4, 5, 6, on the outward side of the sole face of the ground contact faces 2a, 3a, 4a, 5a, 6a. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

Translated fromJapanese

この発明は、人体に帯電する静電気を床に逃がすために半導体工場等で用いている静電気帯電防止靴用靴底に関するものである。  The present invention relates to a shoe sole for an antistatic shoe that is used in a semiconductor factory or the like in order to allow static electricity charged on a human body to escape to the floor.

静電気帯電防止靴は、具体例を挙げるまでもなく公知であるが、これまでの靴底は設置部全面にブロック意匠を配するなど一般靴の延長線上にあるものが多く、そのため床材との摩擦による靴本体からの摩耗による発塵が起こりやすく、半導体を汚染する危険性があった。さらに、静電気帯電靴は人体に帯電する静電気を床に逃がすものであるため、その靴底は、床との接地面が広くなることが望ましいために靴底接地面のブロック意匠を無くし、フラットな靴底にしたものが上市されるようになってきた。しかしその反面フラットで接地面が広くなったために床との摩擦抵抗が大きくなり、その結果として踏付け部が床にふれると全く滑らず、従って、前につんのめるようになり、転倒事故がしばしば生じるという事態となっていた。  Electrostatic antistatic shoes are well known without specific examples, but many of the existing shoe soles are on the extended line of general shoes, such as placing a block design on the entire installation part. Dust from the shoe body due to friction is likely to occur and there is a risk of contaminating the semiconductor. Furthermore, since the electrostatically charged shoes are designed to release static electricity charged to the human body to the floor, it is desirable that the shoe sole has a large ground contact surface with the floor. The shoe soles are now on the market. However, on the other hand, the flat and wide contact surface increases the frictional resistance with the floor. As a result, when the stepping part touches the floor, it does not slide at all, and therefore, it can be picked forward and falls accidents often occur. It was a situation.

半導体工場等ではロンリウムやリノリウムといったプラスチック床材が用いられ、また、半導体に対する埃の付着を防止するためにダウンフローで清浄な空気を流すため用いられているグレーチング構造も躓きの原因となっていることが判明し、それに対処手段が望まれるようになってきているが、この発明は、該対処手段のひとつとして提案するものである。  Plastic factories such as lonlium and linoleum are used in semiconductor factories and the like, and the grating structure used for flowing clean air in downflow to prevent dust from adhering to the semiconductor is also a cause of burning. However, the present invention is proposed as one of the coping means.

親指以下各指を載置する部分を囲む、靴底表面の先端側周端部に、該周端部の縁部に沿わせて接地ブロックを連続又は非連続にして突設し、該接地ブロックは、接地面を凹凸状にすると共に、接地面の靴底表面の面外方向側の、接地ブロックの周側面に連続する端縁部を曲面状にしたことを基本的手段とし、この具体的手段に靴底面の、親指の先部で押圧される部分と親指のつけ根部で押圧される部分および小指のつけ根部で押圧される部分のそれぞれに、第二接地ブロックを突設したことを付加することにより、これら第二接地ブロックが歩行時に最も荷重がかかる位置であることによりバランスよく、従って、躓き防止効果を尚一層期待できる靴を提供できる。  A grounding block is continuously or non-continuously projected along the edge of the peripheral edge at the peripheral edge of the shoe sole surface surrounding the portion where each finger is placed below the thumb. The basic means is that the ground contact surface is made uneven, and the edge portion continuous to the peripheral side surface of the ground contact block on the out-of-plane direction side of the shoe sole surface of the ground contact surface is curved. Added to the means that a second grounding block protrudes from each part of the bottom of the shoe, the part pressed by the tip of the thumb, the part pressed by the base of the thumb, and the part pressed by the base of the little finger. By doing so, it is possible to provide a shoe that has a good balance due to the fact that these second grounding blocks are at the position where the load is most applied during walking, and therefore can be expected to have a further anti-wrinkle effect.

また、前記の基本的事項等に接地ブロックと第二接地ブロックの一方又は双方の周側面は、接地面から基端部にかけて接地面の面外方向に向かって高さが漸小する形態の点を負荷することにより耐久的にも支障のない靴を提供できる。  In addition, in the basic matters, one or both peripheral side surfaces of the grounding block and the second grounding block are configured such that the height gradually decreases from the grounding surface to the base end portion in the out-of-plane direction of the grounding surface. By loading the shoe, it is possible to provide a shoe that does not hinder the durability.

本発明によれば、踏付け部の先端側の周端部に他と独立した接地ブロックがあり、しかも、床面をける側の端縁を曲面状としてあるので、当該接地ブロック部分は適度に滑り易くなって、躓きにくく、半導体工場などで用いるに好適な静電気帯電防止靴を提供できる。  According to the present invention, there is a grounding block that is independent of the other at the peripheral end portion on the tip side of the stepping portion, and the edge on the side of the floor surface is curved, so that the grounding block portion is appropriately It is possible to provide an antistatic shoe that is slippery and difficult to wear and is suitable for use in a semiconductor factory or the like.

図面は本発明に係る静電気帯電防止靴用の靴底の一実施例を示し、図１は一部の底面図、図２は図１のｘ−ｘ線拡大断面図、図３は図１のｙ−ｙ線拡大断面図である。  FIG. 1 shows one embodiment of a shoe sole for an antistatic shoe according to the present invention, FIG. 1 is a partial bottom view, FIG. 2 is an enlarged sectional view taken along line xx of FIG. 1, and FIG. It is a yy line expanded sectional view.

実施例の靴底は、アウトソール部とミッドソール部の２層構造になっており（この２層構造については具体的に図示していない）、ウレタン樹脂を主材とする導電性素材をクッション性と軽量化を図るために発泡成形し、前記のアウトソール部側を微発砲に、ミッドソール部側を高発砲にして好適な履き心地（靴としての）を期待したものである。  The shoe sole of the embodiment has a two-layer structure of an outsole portion and a midsole portion (this two-layer structure is not specifically shown), and cushions a conductive material mainly composed of urethane resin. In order to achieve high performance and light weight, foam molding is performed, and the outsole portion side is finely fired and the midsole portion side is highly fired, so that a suitable comfort (as a shoe) is expected.

図示１は、靴底Ａの踏付け部で、該踏付け部１の表面（接地面）には、接地ブロック２，３，４，５，６（以下、接地ブロック２等という）と第二接地ブロック７，８，９（以下、第二接地ブロック７等という）を突設し、該接地ブロック２等と第二接地ブロック７等および靴底Ａの踵部側の意匠（接地）ブロックの全部又は一部が床面に接触して静電気を逃がし、人体への静電気の帯電を防ぐようにしてある。  1 shows a stepping portion of a shoe sole A. The surface (grounding surface) of the stepping portion 1 includes agrounding block 2, 3, 4, 5, 6 (hereinafter referred to as a grounding block 2) and a second.Grounding blocks 7, 8, 9 (hereinafter referred to as second grounding block 7 etc.) are projected, and thegrounding block 2 etc., the second grounding block 7 etc. and the design (grounding) block on the heel side of the shoe sole A All or some of them touch the floor surface to release static electricity and prevent the human body from being charged with static electricity.

前記接地ブロック２等は、前記踏付け部１（靴底Ａ）の先端側周端部１ａすなわち、靴底Ａの先端側の周端縁１´と図示２点鎖線で示す親指等の各指ｔ１，ｔ２，ｔ３，ｔ４，ｔ５を載置する部分（位置は、足の大きさすなわち靴底の大きさに対応して特定される）ｐとの間に突設し、その先端側の自由端側の先端の接地面２ａ，３ａ，４ａ，５ａ，６ａ（以下、接地面２ａ等という）は梨地状にして凹凸状と成し（各接地面２ａ等の凹凸状は梨地状に限定する必要はない）、該接地面２ａ等と接地ブロック２等の基端（前期踏みつけ部１の本体）との間の周側面２ｂ，３ｂ，４ｂ，５ｂ，６ｂ（接地ブロック等は、この周側面２ｂ等と前記接地面２ａ等で構成される）を接地面２ａ等側から前記基端部にかけて接地面の面外方向に向かって高さが漸小する形態として補強効果を期待している。  Thegrounding block 2 and the like are each of the fingers such as the thumb shown by the distal end sideperipheral end 1a of the stepping portion 1 (shoe sole A), that is, the peripheral end edge 1 'on the distal end side of the shoe sole A and the two-dot chain line in the drawing. Projecting between p1, t2, t3, t4, and t5 (the position is specified according to the size of the foot, that is, the size of the shoe sole), and free on the tip side The ground contact surfaces 2a, 3a, 4a, 5a, 6a (hereinafter referred to as the ground contact surface 2a, etc.) at the end on the end side are formed into a concavo-convex shape (the concavo-convex shape of each contact surface 2a, etc. is limited to a textured shape). (It is not necessary) The peripheral side surfaces 2b, 3b, 4b, 5b, 6b between the grounding surface 2a and the like and the base end of the grounding block 2 (the main body of the first stepping portion 1) 2b etc. and the grounding surface 2a etc.) from the grounding surface 2a etc. side to the base end portion toward the out-of-plane direction of the grounding surface. It hopes reinforcing effect as a form of Saga Susumusho.

また、接地ブロック２等の接地面２ａ等と周側面２ｂ等とが互いに連続する接続部（接地面２ａ等の端縁部）は曲面状としてある。もっとも、この曲面状は、前記踏付け部１の表面すなわち靴底１の表面の面外方向側（踏付け部１の先端側、側端側）の端縁部が成っていれば、角が床面に引っ掛って躓かないという該「曲面状にする」目的は達成できるのである。  In addition, a connecting portion (an end edge portion of the grounding surface 2a or the like) where the grounding surface 2a or the like of thegrounding block 2 or the like and the peripheral side surface 2b or the like are continuous with each other is curved. However, this curved surface has a corner if the edge of the surface of the stepping portion 1, that is, the surface of the shoe sole 1, is located on the out-of-plane direction side (the front end side or the side end side of the stepping portion 1). The “curved surface” object of not catching on the floor surface can be achieved.

実施例の接地ブロック２等は互いに独立して（不連続で）、前記周端部に並設してあるが、連続していても必ずしも不都合はないが、実施例のように互いに独立させていると、各接地ブロック２等間に間隙ｓがあるため、歩行時に折り曲がりやすく、履き心地の低減を防ぐことができる。このため、実施例の接地ブロック２等は、靴底１の表面の面外方向側に対応する面内方向側に符号ｍで示す切除部を設け、書く設置ブロック２等が歩行時に折り曲がり易くしてある。  Thegrounding blocks 2 and the like of the embodiment are independent (discontinuous) from each other and are arranged in parallel at the peripheral end, but it is not necessarily inconvenient if they are continuous, but they are independent from each other as in the embodiment. If there is, there is a gap s between eachgrounding block 2 and the like, so that it is easy to bend during walking, and it is possible to prevent a reduction in comfort. For this reason, thegrounding block 2 or the like of the embodiment is provided with a cutout portion indicated by a symbol m on the in-plane direction side corresponding to the out-of-plane direction side of the surface of the shoe sole 1, and thewriting installation block 2 or the like is easily bent during walking. It is.

前記第二接地ブロック７等は、その内の一の第二接地ブロック７が符号ｔ１で示す前記親指ｔ１の先部で押圧される部分Ｍ１に、他の１つの第二接地ブロック８が親指ｔ１の付け根部で押圧される部分Ｍ２に、そして、もう一つの第二接地ブロック９が符号ｔ５で示す前記小指ｔ５で押圧される部分Ｍ３にそれぞれ配されて、前記接地ブロック２等とほぼ同じ高さ（０．１ｍｍ〜５．０ｍｍ）で踏付け部１の表面に突設されており、この位置関係によって、バランスよく歩行できるという利点を得られる。  The second grounding block 7 and the like are such that one second grounding block 7 is pressed by a tip M1 of the thumb t1 indicated by reference numeral t1, and the othersecond grounding block 8 is thumb t1. And the second grounding block 9 is disposed at the part M3 pressed by the little finger t5 indicated by reference numeral t5, so that the height is substantially the same as that of thegrounding block 2 and the like. The height (0.1 mm to 5.0 mm) projects from the surface of the stepping portion 1, and this positional relationship provides the advantage of walking in a balanced manner.

第二接地ブロック７等は、接地面７ａ，８ａ，９ａを接地ブロック２等の接地面２ａ等と同様に凹凸状（実施例は梨地状）と成し、周側面７ｂ，８ｂ，９ｂを接地ブロック２等の周側面２ｂ等と同様に、接地面７ａ，８ａ，９ａ側からブロック基端縁にかけて接地面７ａ，８ａ，９ａの面外方向に向かって高さが漸小する形態としてブロック７，８，９に補強効果が奏するようにしてある。  In the second grounding block 7 and the like, thegrounding surfaces 7a, 8a, and 9a are formed in a concavo-convex shape (in the embodiment, satin-like) like the grounding surface 2a and the like of thegrounding block 2, and the peripheral side surfaces 7b, 8b, and 9b are grounded. Similarly to the peripheral side surface 2b of theblock 2, etc., the block 7 is configured such that the height gradually decreases from thegrounding surface 7a, 8a, 9a side to the block base edge toward the out-of-plane direction of thegrounding surfaces 7a, 8a, 9a. , 8 and 9 have a reinforcing effect.

実施例の第二接地ブロック７，８，９は平面視欠円リング状としてあるが、これは、指で押圧される前記部分Ｍ１，Ｍ２，Ｍ３にできるだけ狭い面積（広いと滑り易くなる）で押圧力を集中させ、しかも、歩行時に、当該ブロック７，８，９の床面に対する接触がどの部分から始まっても不都合のないようにするためである。  Thesecond grounding blocks 7, 8, and 9 of the embodiment have a circular ring shape in plan view, but this is an area as small as possible in the portions M1, M2, and M3 pressed by a finger (when it is wide, it becomes easy to slip). This is to concentrate the pressing force and to prevent any inconvenience no matter where the contact of theblocks 7, 8, 9 with the floor surface starts during walking.

第二接地ブロック７等の接地面７ａ，８ａ，９ａの周端縁が曲面状を成して周側面７ｂ，８ｂ，９ｂに連続することは、接地ブロック２等と同様である。  Similar to thegrounding block 2 and the like, the peripheral edges of thegrounding surfaces 7a, 8a and 9a of the second grounding block 7 and the like form curved surfaces and continue to the peripheral side surfaces 7b, 8b and 9b.

因みに、実施品と従来品の静摩擦係数をスリップメーター（トリニティラボ社製）によって静摩擦係数測定したので、その試験結果を下記に示す。  Incidentally, the static friction coefficient of the actual product and the conventional product was measured by a slip meter (manufactured by Trinity Labs), and the test results are shown below.

実施品と従来品とは、静摩擦係数の平均値が０．９の差異があり、０．１ポイントの差を大きいとみる摩擦係数の世界ではこの差は大差であり、はっきりと体感できる差でもあり、本発明は、滑りやすく、その分、躓きにくい製品を提供できることが判る。  There is a difference of 0.9 in the static coefficient of friction between the actual product and the conventional product. In the world of the coefficient of friction, where the difference of 0.1 points is considered large, this difference is a big difference. In addition, it can be seen that the present invention can provide a product that is slippery and is difficult to spread.

一部の底面図。A partial bottom view.図１のｘ−ｘ線拡大断面図。The xx line expanded sectional view of FIG.図１のｙ−ｙ線拡大断面図。FIG. 2 is an enlarged sectional view taken along line yy of FIG. 1.

符号の説明Explanation of symbols

１´ 縁部
１ａ 周端部
２，３，４，５，６ 接地ブロック
２ａ，３ａ，４ａ，５ａ，６ａ 接地面
２ｂ，３ｂ，４ｂ，５ｂ，６ｂ 周側面1'edge 1aperipheral edge 2,3,4,5,6 grounding block 2a, 3a, 4a, 5a, 6a grounding surface 2b, 3b, 4b, 5b, 6b peripheral side

Claims (3)

Translated fromJapanese

親指以下各指を載置する部分を囲む、靴底表面の先端側周端部に、該周端部の縁部に沿わせて接地ブロックを連続又は非連続にして突設し、該接地ブロックは、接地面を凹凸状にすると共に、接地面の靴底表面の面外方向側の、接地ブロックの周側面に連続する端縁部を曲面状にした、静電気帯電防止靴用靴底。  A grounding block is continuously or non-continuously projected along the edge of the peripheral edge at the peripheral edge of the shoe sole surface surrounding the portion where each finger is placed below the thumb. Is a shoe sole for an antistatic shoe having an uneven surface and a curved edge at the outer side of the shoe sole surface of the ground surface that is continuous with the peripheral edge of the ground block. 靴底表面の、親指の先部で押圧される部分と親指のつけ根部で押圧される部分および小指のつけ根部で押圧される部分のそれぞれに、第二接地ブロックを突設した、請求項１記載の静電気帯電防止靴用靴底。  2. The second grounding block protrudes from each of a portion pressed on the tip of the thumb, a portion pressed on the base of the thumb, and a portion pressed on the base of the little finger on the surface of the shoe sole. The shoe sole for the antistatic shoe described. 接地ブロックと第二接地ブロックの一方又は双方の周側面は、接地面から基端部にかけて接地面の面外方向に向かって高さが漸小する形態とした、請求項１又は２記載の静電気帯電防止靴用靴底。  3. The static electricity according to claim 1, wherein one or both peripheral side surfaces of the ground block and the second ground block are configured such that the height gradually decreases from the ground surface to the base end portion in an out-of-plane direction of the ground surface. Sole for antistatic shoes.

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