JP3887103B2

JP3887103B2 - Knee pad

Info

Publication number: JP3887103B2
Application number: JP17463198A
Authority: JP
Inventors: 和久正木; 隆生蛯名
Original assignee: Honda Motor Co Ltd
Current assignee: Honda Motor Co Ltd
Priority date: 1998-06-22
Filing date: 1998-06-22
Publication date: 2007-02-28
Anticipated expiration: 2018-06-22
Also published as: JP2000005370A

Description

【０００１】
【発明の属する技術分野】
本発明は膝当てパッドに関する。
【０００２】
【従来の技術】
膝当ては、健康を目的に使われることが多い。スポーツのとき衝撃から膝を守ったり、冷えから膝を守る。例えば、実用新案登録第３０２２２９０号公報「膝当て及びこれを用いた膝サポーター」は膝当てパッドに関する考案である。同公報の第３図において、この膝当て及びこれを用いた膝サポーターは、膝当て１と、膝サポーター１０とからなる。
膝当て１は、表基布２の裏の袋部内に、円形の孔４Ａを中央に備えた緩衝用パッド４を収納保持し、膝サポーター１０に装着される。
膝サポーター１０は伸縮弾性素材を使用し、膝下部分１２が筒状をなし、膝上部分１１が帯状部分１１Ａ，１１Ｂをなし、この帯状部分１１Ａ，１１Ｂを相互に重ねて調整連結できるサポーターである。
【０００３】
膝下部分１２及び帯状部分１１Ａ，１１Ｂで膝当て１を装着する。膝下部分１２は筒状をなし、この筒状の弾性によりふくらはぎ側を押え、回り止めとともにずり落ちを防ぐ。また、帯状部分１１Ａ，１１Ｂは大腿部に巻付け、重ね量を調整することで、所望の締付け強さに加減できる。
【０００４】
【発明が解決しようとする課題】
しかし、上記の構造では、膝を曲げた姿勢だけでなく膝を伸ばした姿勢でも装着部が強く締付けられることとなり、長時間の作業での使用に不向きである。
【０００５】
そこで、本発明の目的は、長時間の立ち姿勢及び膝曲げ姿勢でも作業の妨げとならない膝当てパッドを提供することにある。
【０００６】
【課題を解決するための手段】
上記目的を達成するために請求項１は、膝頭を被う大きさで且つ、膝頭で押される中央から下方へ開くＶ字状の切欠きを有する板状衝撃吸収材と、板状衝撃吸収材を囲繞する略同形状の袋体と、袋体の左右から後方に延ばして、大腿部側に巻かれかつ、切欠きの基点の近傍に配置された上部バンドと、袋体の左右から後方に延ばして、ふくらはぎ側に巻かれかつ、切欠きの長さの中央近傍に配置された下部バンドとからなることを特徴とする。
【０００７】
膝を曲げたときには、Ｖ字状の切欠が閉じて衝撃吸収材が全体的に卵形状となり、膝頭にフィットする。
膝を伸ばしたときには、Ｖ字状の切欠が開いて衝撃吸収材が縦長なＵ字状となり、膝頭にフィットする。
【０００８】
請求項２は、板状衝撃吸収材は、膝を曲げたときに、基点の近傍に加わる膝頭の押力によるとともに、上部・下部バンドの締付けに応じてＶ字状の切欠きの挟み角が小となる方向に変形して、袋体の前面へ突出することで、膝頭の納る所定深さが形成されるように構成されていることを特徴とする。
【０００９】
立ち姿勢から膝を曲げると、膝頭が板状衝撃吸収材を前に突き出す。その際、バンド部材の締付け力はＶ字状の切欠きに作用し、切欠きの隙間が小さくなるので、突出した形状を容易に形成することができる。
【００１０】
請求項３は、袋体が、板状衝撃吸収材の前面への突出とともに、板状衝撃吸収材の弾性により卵形を維持して張りを与えた裏地を有し、膝頭に張りのある裏地の中央部を押し当てて装着することを特徴とする。
【００１１】
板状衝撃吸収材の切欠きを狭くして卵形にし、袋体に入れ、裏地に張りを与える。張りのある裏地は、中央部が一番たわみやすく、最も安定した位置であり、中央部を押している膝頭からずれ難い。
【００１２】
【発明の実施の形態】
本発明の実施の形態を添付図に基づいて以下に説明する。なお、図面は符号の向きに見るものとする。
図１は本発明に係る膝当てパッドの側面図であり、膝を曲げた状態を示す。
膝当てパッド１は板状衝撃吸収材２と、この板状衝撃吸収材２を包む袋体であるところの袋３と、この袋３の左右から後方に延ばしたバンド部材であるところのバンド４とからなる。Ｄは大腿部、Ｈはふくらはぎ、Ｆは床（又は膝をつくもの）、Ｓは作業ズボンである。
バンド４は、ゴム製で、大腿部Ｄ側に巻く上部バンド４ａと、ふくらはぎＨ側に巻く下部バンド４ｂとからなる。
【００１３】
図２は本発明に係る膝当てパッドの要部断面図であり、膝を曲げた状態での膝立て姿勢を示す。
大腿部Ｄに対して、ふくらはぎＨが略９０°に曲った状態を「膝を曲げた状態」と呼称することにする。
図では、膝を曲げたことで、板状衝撃吸収材２が略卵形となって膝頭を被っていることを示す。
【００１４】
図３は本発明に係る膝当てパッドの分解斜視図である。
板状衝撃吸収材２は、膝頭を被う大きさの長円板であり、中央５の基点５ａから下方へ所定の角度（挟み角）に開いたＶ字状の切欠き６と、通気孔７…（…は複数を示す。以下同様。）とを設けたものである。２ａは上辺、２ｂは下辺、２ｃは左辺、２ｄは右辺である。
袋３は、板状衝撃吸収材２より少し大きい綿製の表地１１と、この表地１１に縫い付けたナイロン製の裏地１２と、表地１１の縁及び裏地１２の縁に縫い付けたファスナ１３とからなる。
【００１５】
板状衝撃吸収材２を包む要領は、まず、表地１１の裏に仮想線の矢印の如く板状衝撃吸収材２を合せて仮想線の所定位置に置く。次に、裏地１２を仮想線の矢印の如く閉じ、ファスナ１３を閉じ、袋３を作るとともに袋３で板状衝撃吸収材２を包む。逆に、板状衝撃吸収材２を取出す要領は、ファスナ１３を開け、袋３を開き、板状衝撃吸収材２を取出す。
袋３の周囲にファスナ１３を縫い付けたので、袋３の開閉が容易になり、袋３の洗濯や交換が簡単にできる。また、板状衝撃吸収材２の交換も容易にできる。なお、通気孔７で空気の流れを図り、膝当てパッド１による発汗を抑える作用をなす。
【００１６】
図４は本発明に係る膝当てパッドの斜視図であり、袋３で板状衝撃吸収材２を包んだ状態を示す。
袋３内にある板状衝撃吸収材２は、平坦で且つ切欠き６がＶ字状を保つ。
１４…はバンド４に設けた面ファスナであり、大腿部にバンド４ａを巻付け、所望の締付け強さになるよう面ファスナ１４を重ね合せる。ふくらはぎにも同様にバンド４ｂを巻付け、膝当てパッドを膝に装着する。
１５は裏地１２に形成した凹凸模様である。
【００１７】
以上に述べた膝当てパッドの作用を次に説明する。
図５は本発明に係る膝当てパッドの作用を説明する透視図であり、作業ズボンＳの上から膝当てパッド１を取付け、立ち姿勢で作業している状態を示す。立ち姿勢では、バンド４ａ，４ｂの締付けにより、板状衝撃吸収材２の左・右辺２ｃ，２ｄが膝の左右を囲うように縦長なＵ字状になる。同時に、下辺２ｂから脚までの間に隙間Ｇを形成する。隙間Ｇがあってもバンド４ａの締付けにより、膝当てパッド１は下がらない。隙間Ｇができることで、脚の動きが楽になり、膝を伸ばした立ち姿勢での作業性が向上する。
【００１８】
図６は図５の６−６線断面図であり、膝に装着し、非屈曲（立ち姿）を裏地側から見た状態を示す。
立ち姿では、板状衝撃吸収材２の切欠き６がＶ字状に開いたままである。膝当てパッド１はバンド４ａ，４ｂの所望の締付け強さで装着されるので、締付けに不快感がない。
凹凸模様１５により作業ズボンＳ（図５）に対して滑り難くなるので、膝当てパッド１のずり落ち防止が向上する。
【００１９】
図７は図２の７−７線断面図であり、膝を曲げた状態での膝立て姿勢を裏地側から見た状態を示す。
膝を曲げた状態で膝当てパッド１を使う。膝を曲げると、バンド４ａ，４ｂが板状衝撃吸収材２を後方に引き、同時に切欠き６の基点５ａであるＡ点から少しの距離δだけ離れたＢ点に膝頭で体重の押力がかかり、板状衝撃吸収材２は卵形に変形し始める。このとき、切欠き６は矢印▲１▼の如く角度が小となる方向に閉じるので、各辺２ａ，２ｂ，２ｃ，２ｄは波状にならずに自動的に持上がり（図面表）、卵形の凹部形状に容易に変形する。板状衝撃吸収材２が変形して膝にフィットするから、長時間着けていても動作に違和感を感じさせず、また、必要以上の締付け強さも感じさせない。
さらに、切欠き６が閉じるので、脛まで保護できる。
【００２０】
図８は図２の８−８線断面図である。
膝を曲げた状態での膝立て姿勢では、袋３の左右の縁から板状衝撃吸収材２の中央付近に深さＥができる。膝を曲げたときにバンド４ａ，４ｂの締付けに応じて、板状衝撃吸収材２は前面へ突出するとともに深さＥは変化する。この深さＥに膝頭が納るので、膝当てパッドは安定する。
【００２１】
図９（ａ），（ｂ）は本発明に係る膝当てパッドの別実施例を示す図であり、（ａ）は側面図、（ｂ）は（ａ）のｂ−ｂ線断面図である。上記図１〜図４に示す実施の形態と同様の構成については、同一符号を付し説明を省略する。
（ａ）において、膝当てパッド２０は、板状衝撃吸収材２と、バンド４と、袋２１とからなる。
袋２１は、表地２２と、この表地２２に縫い付けた裏地２３と、表地２２の縁及び裏地２３の縁に縫い付けたファスナ１３とからなる。
表地２２は、綿製で、板状衝撃吸収材２の卵形にほぼ合せ裁断したものである。
裏地２３は、ナイロン製で、板状衝撃吸収材２の卵形にほぼ合せ裁断したものである。
【００２２】
袋２１で板状衝撃吸収材２を包むには、板状衝撃吸収材２の切欠き６（図３参照）を狭くして卵形にし、袋２１に入れ、ファスナ１３を閉じる。袋２１に入れると、板状衝撃吸収材２の弾性により卵形を維持して裏地２３に張りを与える。
【００２３】
（ｂ）において、切欠き６を狭め、板状衝撃吸収材２を断面ハの字にして袋２１に収納した状態を示す。板状衝撃吸収材２の前面への突出で中央から裏地２３までの間に最大深さｈを形成し、裏地２３には、膝に装着する前に所定の張力が働く。
【００２４】
図１０（ａ）〜（ｃ）は本発明に係る膝当てパッドの別実施例の作用説明図であり、理解を容易にするために図９の膝当てパッド２０をモデル化したものである。
（ａ）において、膝頭に裏地２３の上部端Ｐ１を当て、膝当てパッド２０を装着した状態を示す。膝曲げによる力Ｆが上部端Ｐ１にかかり、たわみＸ１だけ押すと、、裏地２３の中央がよりたわみやすいため、膝当てパッド２０には上方に移動しようとする力Ｆ１が働き、移動を開始する。
【００２５】
（ｂ）において、移動する膝当てパッド２０は、移動距離Ｈ１だけ動き、上からの距離Ｙ３と下からの距離Ｙ４がほぼ等しい中央点Ｐ２の位置で落ち着き、止まる。この中央点Ｐ２が最も安定する位置であり、膝を曲げたときに常に膝当てパッド２０の先端とのクッションストロークを最大に維持できる。すなわち、膝頭に張りのある裏地２３の中央点Ｐ２を押し当て、装着するから、膝当てパッド２０は下り難くく、繰り返し使用してもずり落ちる心配がない。
【００２６】
（ｃ）において、膝頭に裏地２３の下部端Ｐ３を当て、膝当てパッド２０を装着した状態を示す。膝曲げによる力Ｆが下部端Ｐ３にかかり、たわみＸ１だけ押すと、、裏地２３の中央がよりたわみやすいため、膝当てパッド２０には下方に移動しようとする力Ｆ２が働き、移動を開始する。（ｂ）に戻って、移動する膝当てパッド２０は、移動距離Ｈ２だけ動き、中央点Ｐ２の位置で落ち着き、止まる。すなわち、膝頭に張りのある裏地２３の中央点Ｐ２を押し当て、装着するから、膝当てパッド２０は上り難くく、繰り返し使用してもずり上る心配がない。なお、膝当てパッド２０（別実施例）を装着した状態は、膝当てパッド１と同様であり、図１及び図５の装着状態である。
【００２７】
本発明の膝当てパッドは、立ち姿勢で部品を受取り、膝を曲げて部品を取付ける、曲げ伸ばし動作の頻度が高い職場でも、ずり落ちる心配やずり上がる心配がなく、膝及び脛も痛くない。さらに、膝をつきつつ部品を取付ける作業時間が多い環境でも、膝当てパッドによる締付けの不快感が生じる心配がない。従って、膝をつく作業に好適な膝当てである。
【００２８】
尚、本発明の実施の形態に示した図３の表地１１を綿から耐摩耗に優れた生地に替えてもよく、また、裏地１２をナイロンからより肌ざわりのよい生地に替えてもよい。
図３の板状衝撃吸収材２の基点５ａに小さい通し孔を形成してもよい。
図３の表地１１及び裏地１２にファスナ１３を縫い付けたが、ファスナ１３をつけずに表地１１に裏地１２を直接縫い付けてもよい。
また、図４の凹凸模様１５は丸形状の凹凸模様の外、多角形状や縦長・横長形状の凹凸模様でもよい。
さらに、バンド４は紐でもよく、バンド先端同士の結合法は面ファスナの外、バックル、ホックなど任意の手法を採用できる。
【００２９】
【発明の効果】
本発明は上記構成により次の効果を発揮する。
請求項１では、膝頭を被う大きさで且つ、膝頭で押される中央から下方へ開くＶ字状の切欠きを形成した板状衝撃吸収材と、板状衝撃吸収材を囲繞する略同形状の袋体と、袋体の左右から後方に延ばして、大腿部側に巻かれかつ、切欠きの基点の近傍に配置された上部バンドと、袋体の左右から後方に延ばして、ふくらはぎ側に巻かれかつ、切欠きの長さの中央近傍に配置された下部バンドとからなるので、膝を曲げたときには、Ｖ字状の切欠が閉じて板状衝撃吸収材が全体的に卵形状となり、膝頭にフィットし、必要以上の締付け強さを感じさせない。また、膝を伸ばしたときには、Ｖ字状の切欠が開いて板状衝撃吸収材は縦長なＵ字状となり、膝頭にフィットする。当初の所望の締め加減で膝当てパッドを保持でき、ずり落ちを防止する。
【００３０】
請求項２では、板状衝撃吸収材は、膝を曲げたときに、基点の近傍に加わる膝頭の押力によるとともに、上部・下部バンドの締付けに応じてＶ字状の切欠きの挟み角が小となる方向に変形して、袋体の前面へ突出することで、膝頭の納る所定深さが形成されるので、立ち姿勢から膝を曲げると、膝頭の押力及び上部・下部バンドの締付け力はＶ字状の切欠きに作用し、切欠きの角度を小さくする。その結果、膝頭の納る所定深さの突出した形状を容易に形成することができる。従って、長時間の膝曲げ姿勢でも作業の妨げとならない。
【００３１】
請求項３では、袋体は、板状衝撃吸収材の前面への突出とともに、板状衝撃吸収材の弾性により卵形を維持して張りを与えた裏地を有し、膝頭に張りのある裏地の中央部を押し当てて装着するので、張りのある裏地は、中央部が一番たわみやすく、最も安定した位置であり、中央部を押している膝頭からずれ難い。その結果、膝当てパッドが膝頭からずり上る心配がないとともによりずり落ち難い。
【図面の簡単な説明】
【図１】本発明に係る膝当てパッドの側面図
【図２】本発明に係る膝当てパッドの要部断面図
【図３】本発明に係る膝当てパッドの分解斜視図
【図４】本発明に係る膝当てパッドの斜視図
【図５】膝当てパッドの作用を説明する透視図
【図６】図５の６−６線断面図
【図７】図２の７−７線断面図
【図８】図２の８−８線断面図
【図９】本発明に係る膝当てパッドの別実施例を示す図
【図１０】本発明に係る膝当てパッドの別実施例の作用説明図
【符号の説明】
１，２０…膝当てパッド、２…板状衝撃吸収材、２ａ…上辺、２ｂ…下辺、２ｃ…左辺、２ｄ…右辺、３，２１…袋体（袋）、４…バンド部材（バンド）、５…中央、６…切欠き、１１…表地、１２，２３…裏地、Ｐ２…中央部（中央点）。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a knee pad.
[0002]
[Prior art]
Knee pads are often used for health purposes. Protect your knees from shocks during sports and protect your knees from getting cold. For example, Utility Model Registration No. 3022290 “Knee pads and knee support using the same” is a device related to knee pads. In FIG. 3 of the publication, the knee pad and the knee supporter using the knee pad include a knee pad 1 and a knee supporter 10.
The knee pad 1 accommodates and holds a cushioning pad 4 having a circular hole 4 </ b> A in the center in the bag portion on the back of the front base fabric 2, and is attached to the knee supporter 10.
The knee supporter 10 uses a stretchable elastic material, the lower knee portion 12 has a cylindrical shape, the upper knee portion 11 has belt-like portions 11A and 11B, and these belt-like portions 11A and 11B can be adjusted and connected to each other. .
[0003]
The knee pad 1 is worn at the lower knee portion 12 and the belt-like portions 11A and 11B. The below-knee portion 12 has a cylindrical shape, and the cylindrical elasticity presses the calf side to prevent slipping off as well as rotation prevention. Further, the belt-like portions 11A and 11B are wound around the thighs and the amount of overlap can be adjusted to adjust the desired tightening strength.
[0004]
[Problems to be solved by the invention]
However, in the above-described structure, the mounting portion is strongly tightened not only in a posture in which the knee is bent but also in a posture in which the knee is extended, which is not suitable for use in a long-time operation.
[0005]
Accordingly, an object of the present invention is to provide a knee pad which does not hinder work even in a long standing posture and knee bending posture.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a plate-like shock absorber having a size that covers the kneecap and having a V-shaped notch that opens downward from the center pressed by the kneecap, and a plate-like shock absorber. A bag of substantially the same shape that surrounds the bag, an upper band that extends from the left and right sides of the bag body, is wound on the thigh side, and is disposed near the base of the notch, and from the left and right sides of the bag body And a lower band which is wound on the calf side and arranged in the vicinity of the center of the length of the notch .
[0007]
When the knee is bent, the V-shaped notch is closed and the shock absorbing material becomes an egg shape as a whole, and fits to the kneecap.
When the knee is extended, the V-shaped notch opens and the shock absorber becomes a vertically long U-shape, which fits the kneecap.
[0008]
According to the second aspect of the present invention, the plate-like shock absorber has a knee-shaped pressing force applied to the vicinity of the base point when the knee is bent, and the V-shaped notch has a clamping angle according to the tightening of the upper and lower bands. deformed in a direction to be small, by projecting toward the front of the bag, characterized in that it is configured to fit a predetermined depth of the kneecap is formed.
[0009]
When the knee is bent from a standing posture, the kneecap projects the plate-shaped shock absorber forward. At this time, the tightening force of the band member acts on the V-shaped notch, and the gap between the notches is reduced, so that a protruding shape can be easily formed.
[0010]
The bag according to claim 3 has a lining in which the bag body has a tension that maintains an oval shape by the elasticity of the plate-shaped shock absorber together with the protrusion to the front surface of the plate-shaped shock absorber, and has a tension on the kneecap It is characterized in that it is mounted by pressing the center part of.
[0011]
Narrow the notch of the plate-like shock absorber into an oval shape, put it in a bag, and give tension to the lining. The tensioned lining is the most flexible position in the central part and the most stable position, and is difficult to slip from the kneecap pushing the central part.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings are viewed in the direction of the reference numerals.
FIG. 1 is a side view of a knee pad according to the present invention, showing a state where a knee is bent.
The knee pad 1 is a plate-shaped shock absorber 2, a bag 3 that is a bag that wraps the plate-shaped shock absorber 2, and a band 4 that is a band member that extends backward from the left and right of the bag 3. It consists of. D is a thigh, H is a calf, F is a floor (or a thing with a knee), and S is work pants.
The band 4 is made of rubber and includes an upper band 4a wound on the thigh D side and a lower band 4b wound on the calf H side.
[0013]
FIG. 2 is a cross-sectional view of a main part of the knee pad according to the present invention, and shows a kneeling posture in a state where the knee is bent.
A state in which the calf H is bent at approximately 90 ° with respect to the thigh D will be referred to as “a state where the knee is bent”.
In the figure, it is shown that the plate-shaped shock absorber 2 is substantially oval and covers the kneecap by bending the knee.
[0014]
FIG. 3 is an exploded perspective view of the knee pad according to the present invention.
The plate-shaped shock absorber 2 is an oval plate that is large enough to cover the kneecap, and has a V-shaped notch 6 that opens downward from a base point 5a of the center 5 at a predetermined angle (slipping angle), and a vent hole. 7 (... indicates a plurality. The same shall apply hereinafter). 2a is an upper side, 2b is a lower side, 2c is a left side, and 2d is a right side.
The bag 3 is made of a cotton outer material 11 that is slightly larger than the plate-like impact absorbing material 2, a nylon lining 12 sewn on the outer surface 11, an edge of the outer surface 11 and a fastener 13 sewn on the edge of the lining 12. Consists of.
[0015]
The procedure for wrapping the plate-like impact absorbing material 2 is as follows. First, the plate-like impact absorbing material 2 is put on the back of the outer surface 11 as indicated by the phantom line arrow and placed at a predetermined position on the imaginary line. Next, the lining 12 is closed as indicated by an imaginary line arrow, the fastener 13 is closed, the bag 3 is formed, and the plate-shaped shock absorber 2 is wrapped with the bag 3. Conversely, the procedure for taking out the plate-like shock absorber 2 is to open the fastener 13, open the bag 3, and take out the plate-like shock absorber 2.
Since the fastener 13 is sewn around the bag 3, the bag 3 can be easily opened and closed, and the bag 3 can be easily washed and replaced. In addition, the plate-like shock absorber 2 can be easily replaced. In addition, the air flow is aimed at the vent hole 7 and the sweating by the knee pad 1 is suppressed.
[0016]
FIG. 4 is a perspective view of the knee pad according to the present invention, and shows a state in which the plate-like shock absorber 2 is wrapped with the bag 3.
The plate-like shock absorber 2 in the bag 3 is flat and the notch 6 is V-shaped.
14 is a hook and loop fastener provided on the band 4, and the band 4a is wound around the thigh and the hook and loop fastener 14 is overlapped so as to have a desired tightening strength. Similarly, a band 4b is wound around the calf and a knee pad is attached to the knee.
Reference numeral 15 denotes an uneven pattern formed on the lining 12.
[0017]
The operation of the knee pad described above will be described next.
FIG. 5 is a perspective view for explaining the operation of the knee pad according to the present invention, and shows a state in which the knee pad 1 is attached from above the work pants S and working in a standing posture. In the standing posture, by tightening the bands 4a and 4b, the left and right sides 2c and 2d of the plate-shaped shock absorber 2 are formed in a vertically long U shape so as to surround the left and right sides of the knee. At the same time, a gap G is formed between the lower side 2b and the leg. Even if there is a gap G, the knee pad 1 is not lowered by tightening the band 4a. Since the gap G is formed, the movement of the legs becomes easier and the workability in the standing posture with the knees extended is improved.
[0018]
FIG. 6 is a cross-sectional view taken along line 6-6 in FIG. 5 and shows a state in which the device is worn on the knee and the non-bent (standing position) is viewed from the lining side.
In the standing position, the notch 6 of the plate-like shock absorber 2 remains open in a V shape. Since the knee pad 1 is mounted with the desired tightening strength of the bands 4a and 4b, there is no discomfort in tightening.
Since the uneven pattern 15 makes it difficult for the work pants S (FIG. 5) to slip, the prevention of slipping of the knee pad 1 is improved.
[0019]
FIG. 7 is a cross-sectional view taken along line 7-7 in FIG. 2 and shows a state where the kneeling posture with the knee bent is viewed from the lining side.
Use knee pad 1 with the knee bent. When the knee is bent, the bands 4a and 4b pull the plate-like shock absorber 2 backward, and at the same time, the weight pressing force at the kneecap is at point B which is a little distance δ away from point A which is the base point 5a of the notch 6. As a result, the plate-like shock absorber 2 begins to deform into an oval shape. At this time, the notch 6 is closed in a direction in which the angle becomes smaller as indicated by the arrow (1), so that the sides 2a, 2b, 2c, 2d are automatically lifted without being wavy (drawing table), and are oval. It easily deforms into a concave shape. Since the plate-like shock absorbing material 2 is deformed and fits to the knee, even if it is worn for a long time, it does not feel uncomfortable in operation and does not feel unnecessarily tightening strength.
Furthermore, since the notch 6 is closed, the shin can be protected.
[0020]
8 is a cross-sectional view taken along line 8-8 in FIG.
In the kneeling posture with the knee bent, a depth E is formed from the left and right edges of the bag 3 in the vicinity of the center of the plate-like shock absorber 2. When the knees are bent, according to the tightening of the bands 4a and 4b, the plate-like shock absorber 2 protrudes to the front surface and the depth E changes. Since the kneecap fits in this depth E, the knee pad is stable.
[0021]
FIGS. 9A and 9B are views showing another embodiment of the knee pad according to the present invention, FIG. 9A is a side view, and FIG. 9B is a sectional view taken along the line bb of FIG. . Components similar to those in the embodiment shown in FIGS. 1 to 4 are denoted by the same reference numerals and description thereof is omitted.
In (a), the knee pad 20 is composed of a plate-like shock absorber 2, a band 4, and a bag 21.
The bag 21 includes a surface material 22, a lining 23 sewn on the surface material 22, and a fastener 13 sewn on the edge of the surface material 22 and the edge of the lining material 23.
The surface material 22 is made of cotton and cut substantially in accordance with the oval shape of the plate-like shock absorber 2.
The lining 23 is made of nylon, and is cut in accordance with the oval shape of the plate-like shock absorber 2.
[0022]
In order to wrap the plate-like shock absorber 2 with the bag 21, the notch 6 (see FIG. 3) of the plate-like shock absorber 2 is narrowed into an egg shape, put into the bag 21, and the fastener 13 is closed. When put in the bag 21, the oval shape is maintained by the elasticity of the plate-like shock absorber 2 and the backing 23 is stretched.
[0023]
In (b), the notch 6 is narrowed, and the plate-shaped shock absorber 2 is shown in a cross-sectional shape and stored in the bag 21. A maximum depth h is formed between the center and the lining 23 by the protrusion of the plate-like shock absorber 2 to the front surface, and a predetermined tension acts on the lining 23 before being attached to the knee.
[0024]
10 (a) to 10 (c) are explanatory views of the operation of another embodiment of the knee pad according to the present invention, in which the knee pad 20 of FIG. 9 is modeled for easy understanding.
In (a), the upper end P1 of the lining 23 is applied to the kneecap and the knee pad 20 is attached. When the force F due to the knee bending is applied to the upper end P1 and only the deflection X1 is pushed, the center of the lining 23 is more easily deflected, so that the force F1 to move upward acts on the knee pad 20 and starts moving. .
[0025]
In (b), the moving knee pad 20 moves by the moving distance H1, settles at the position of the center point P2 where the distance Y3 from the top and the distance Y4 from the bottom are approximately equal, and stops. This center point P2 is the most stable position, and the cushion stroke with the tip of the knee pad 20 can always be maintained at the maximum when the knee is bent. That is, since the center point P2 of the lining 23 having a tension on the kneecap is pressed and worn, the knee pad 20 is difficult to descend and there is no fear of slipping even after repeated use.
[0026]
In (c), the lower end P3 of the lining 23 is applied to the kneecap and the knee pad 20 is attached. When the force F due to knee bending is applied to the lower end P3 and only the deflection X1 is pushed, the center of the lining 23 is more easily deflected, so that the force F2 that attempts to move downward acts on the knee pad 20 and starts moving. . Returning to (b), the moving knee pad 20 moves by the moving distance H2, settles at the position of the center point P2, and stops. In other words, since the center point P2 of the lining 23 having a tension on the kneecap is pressed and worn, the knee pad 20 is difficult to ascend and there is no fear that it will rise even after repeated use. The state where the knee pad 20 (another embodiment) is mounted is the same as the knee pad 1 and is the mounted state of FIGS. 1 and 5.
[0027]
The knee pad of the present invention receives parts in a standing posture, bends the knees and attaches the parts, and there is no fear of slipping or raising even in the workplace where the frequency of bending and stretching is high, and the knee and shin are not painful. Furthermore, even in an environment where there is a lot of work time for mounting parts while wearing the knee, there is no concern that the discomfort of tightening with the knee pad will occur. Therefore, it is a knee pad suitable for the operation | work which puts a knee.
[0028]
3 shown in the embodiment of the present invention may be changed from cotton to a fabric having excellent wear resistance, and the lining 12 may be changed from nylon to a fabric having a better texture.
You may form a small through-hole in the base point 5a of the plate-shaped impact-absorbing material 2 of FIG.
Although the fastener 13 is sewed to the outer material 11 and the lining material 12 in FIG. 3, the lining material 12 may be directly sewn to the outer material 11 without attaching the fastener 13.
4 may be a polygonal shape, a vertically long or a horizontally long uneven pattern, in addition to a circular uneven pattern.
Furthermore, the band 4 may be a string, and the band tip-to-band connection method can employ any method such as a hook, hook, hook or the like.
[0029]
【The invention's effect】
The present invention exhibits the following effects by the above configuration.
According to the first aspect of the present invention, there is provided a plate-like shock absorber that is sized to cover the kneecap and that has a V-shaped notch that opens downward from the center that is pushed by the kneecap, and a substantially the same that surrounds the plate-like shock absorber. A bag with a shape, an upper band that extends from the left and right sides of the bag body, is wound around the thigh and is located near the base of the notch, and extends from the left and right sides of the bag body to the rear, And the lower band placed near the center of the length of the notch, so when the knee is bent, the V-shaped notch is closed and the plate-like shock absorber is entirely oval It fits on the kneecap and doesn't feel more tight than necessary. Further, when the knee is extended, the V-shaped notch is opened, and the plate-shaped shock absorber becomes a vertically long U-shape, which fits the kneecap. The knee pad can be held with the initial desired tightening to prevent slipping off.
[0030]
In the present invention, the plate-like shock absorber has a knee-shaped pressing force applied to the vicinity of the base point when the knee is bent, and the V-shaped notch has a sandwich angle according to the tightening of the upper and lower bands. deformed in a direction to be small, by projecting toward the front of the bag, since pay a predetermined depth of the kneecap is formed, the bending knee standing position, the pushing force and the upper and lower bands kneecap The tightening force acts on the V-shaped notch and reduces the angle of the notch . As a result, it is possible to easily form a protruding shape with a predetermined depth that the kneecap can fit . Therefore, even a long knee bending posture does not hinder the work.
[0031]
According to a third aspect of the present invention, the bag body has a lining that is tensioned by maintaining the oval shape by the elasticity of the plate-like shock absorbing material, and protruding from the front surface of the plate-like shock absorbing material. Since the center part is pressed against the center part , the tensioned lining is the most flexible position in the center part and is the most stable position. As a result, the knee pad does not have to worry about sliding up from the kneecap and is more difficult to slide down.
[Brief description of the drawings]
FIG. 1 is a side view of a knee pad according to the present invention. FIG. 2 is a cross-sectional view of a main part of the knee pad according to the present invention. FIG. 3 is an exploded perspective view of a knee pad according to the present invention. FIG. 5 is a perspective view for explaining the action of the knee pad. FIG. 6 is a sectional view taken along line 6-6 in FIG. 5. FIG. 7 is a sectional view taken along line 7-7 in FIG. 8 is a cross-sectional view taken along line 8-8 in FIG. 2. FIG. 9 is a view showing another embodiment of the knee pad according to the present invention. FIG. 10 is a diagram for explaining the operation of another embodiment of the knee pad according to the present invention. Explanation of symbols]
DESCRIPTION OF SYMBOLS 1,20 ... Knee pad, 2 ... Plate-shaped impact-absorbing material, 2a ... Upper side, 2b ... Lower side, 2c ... Left side, 2d ... Right side, 3,21 ... Bag body (bag), 4 ... Band member (band), 5 ... center, 6 ... notch, 11 ... outer surface, 12, 23 ... lining, P2 ... center (center point).

Claims

A plate-shaped shock absorber having a size that covers the kneecap and having a V-shaped notch that opens downward from the center pushed by the kneecap ; and a substantially identical bag that surrounds the plate-shaped shock absorber; An upper band that extends rearward from the left and right sides of the bag body, is wound around the thigh side, and is disposed in the vicinity of the base point of the notch, and extends rearward from the left and right sides of the bag body to the calf side. A knee pad which is wound and comprises a lower band disposed in the vicinity of the center of the length of the notch .

The plate-shaped shock absorber has the knee-shaped pressing force applied to the vicinity of the base point when the knee is bent, and the V-shaped notch has a sandwich angle according to the tightening of the upper and lower bands. The knee pad according to claim 1, wherein the knee pad is configured to be deformed in a small direction and projecting toward the front surface of the bag body to form a predetermined depth in which the kneecap can be accommodated. .

The bag body has a lining that projects from the front side of the plate-shaped shock absorber, and that is tensioned by maintaining the oval shape by the elasticity of the plate-shaped shock absorber , and the center of the lining with the tension on the kneecap The knee pad according to claim 1, wherein the knee pad is mounted by pressing the portion.