JP3686243B2 - Chair type massage machine - Google Patents

Description

【００２７】
又、両支持軸１５、１６のうちの少なくとも一方の支持軸、例えば図３に示すように支持軸１５とこれに嵌合された嵌合部材３１とがなす一方の摺動支持部には、脚載置部１３を前記可動範囲Ｓ内の任意位置で固定するブレーキ操作式のワンタッチロック機構３３が設けられている。図３及び図６に示されるように前記ロック機構３３は、ブレーキシュー３４と、ブレーキレバー３５とを有している。嵌合部材３１の軸方向中間部の一部には、支持軸１５を露出させる開放部３６が設けられ、この開放部３６にブレーキシュー３４が収容されている。このシュー３４は、開放部３６に露出された支持軸１５に接するブレーキ面３４ａと、これと反対側の面に形成された係合凹部３４ｂとを有している。嵌合部材３１には開放部３６の両側に位置して相対向する一対の軸支え凸部３７が一体に突設され、これら凸部３７にわたって設けた支軸３８には、ブレーキレバー３５の基端部が回動可能に取付けられている。このレバー３５の基端部には前記係合凹部３４ｂに係脱可能なカム部３５ａが設けられ、このブレーキレバー３５は図６（Ａ）に示すロック解除位置と図６（Ｂ）に示すロック位置とにわたって回動可能である。
【００２８】
ブレーキレバー３５がロック位置にある時、そのカム部３５ａは係合凹部３４ａに係合するとともにブレーキシュー３４のブレーキ面３４ａを強く支持軸１５に圧接して、支持軸１５に対して嵌合部材３１ひいては脚載置部１３が動かないように固定（ロック）できる。又、ブレーキレバー３５がロック解除位置にある時、そのカム部３５ａが係合凹部３４ａから外れるとともにブレーキシュー３４のブレーキ面３４ａを支持軸１５に対して軽微に接触ないしは支持軸１５に対して非接触として、支持軸１５に対して嵌合部材３１ひいては脚載置部１３を自由に動かすことができる。
【００２９】
ブレーキレバー３５は手動操作により回動されるものである。又、この回動操作に伴いカム部３５ａは、ブレーキシュー３４の図６（Ａ）（Ｂ）中符号３４ｃで示す節度部を弾性変形させながら乗り越えて、係合凹部３４ｂに係脱されるものであり、その際に節度感を得ることができる。しかも、係合凹部３４ｂにカム部３５ａが係合することによって、ブレーキシュー３４の反力を受けるブレーキレバー３４は、ロック位置に保持されるようになっている。
【００３０】
なお、ワンタッチロック機構３３を支持軸１５側に設けた構成においては、この軸１５とそれに嵌合された嵌合部材３１の嵌合孔３１ａとの公差がきつく密に嵌合していてがたつくことがないから、他方の支持軸１６側にワンタッチロック機構３３を設けるよりも既述の任意ロック位置でのブレーキ作用を確実に発揮させ得る点で優れている。
【００３１】
又、前記構成の脚載置台１１は、図２（Ａ）に示すように座部３の前端に連なるように水平状の姿勢をなす載置位置と、図２（Ｂ）に示すように座部３の前端から下方に折れ曲がって垂直状の姿勢をなす格納位置とにわたって移動可能に設けられている。このような移動を可能とするために、前記本体フレーム２と脚支持体１２とにわたってリンク機構４１が設けられている。この機構４１が備える出力リンク４１ａは支持体ベース１４が有する一対の連結ブラケット１４ａに枢着されているとともに、入力リンク４１ｂには操作ハンドル４２が接続されている。操作ハンドル４２は一方の肘掛け部５の外側に配置されている。
【００３２】
このハンドル４２を図２（Ｂ）の状態から図２（Ａ）の状態に示すように後方へ倒すように回動させることにより、リンク機構４１が伸びるように動作して、前記載置位置に脚載置台１１を配置できるとともに、この逆に、操作ハンドル４２を図２（Ａ）の状態から図２（Ｂ）の状態に示すように後方へ倒すように回動させることにより、リンク機構４１が縮むように動作して、前記格納位置に脚載置台１１を配置できるようになっている。なお、操作ハンドル４２の回動軸には図示しないロック機構が取付けられており、そのロック作用が働いた時には前記格納位置から載置位置に至る任意角度位置及び前記載置位置に脚載置台１１を保持できるとともに、肘掛け部５などに設けた図示しないロック解除操作部の操作に伴い脚載置台１１のロックを解除して、この台１１を格納位置等に動かし得るようになっている。
【００３３】
前記構成の椅子式エアーマッサージ機において脚載置台１１を使用しない場合には、この台１１を座部３の前側の前記格納位置に配置すればよく、又、脚載置台１１を使用する場合には、この台１１を起こして前記載置位置に配置するとともに、この台１１の脚セット溝２４に使用者の両脚を個別に収容して使用すればよい。
【００３４】
この場合、脚載置台１１は、使用者の体格に応じて適正な位置、つまり、施療用袋体２５の略中心部が脚セット溝２４内の脚の必要個所、例えば標準的には脹脛の頂部に対応する位置に調節して配置される。
【００３５】
この位置調節は、前記ワンタッチロック機構３３のブレーキレバー３５を図６（Ａ）に示すロック解除位置に回動させることにより、支持軸１５に対する嵌合部材３２の摺動を可能とした状態で、使用者自らの手で、或いは脚先で脚載置部１３を脚支持体１２に対して前後に移動させることにより、特別な動力を要することなく行なう。
【００３６】
この時、脚載置部１３は、それに設けた嵌合部材３１、３２を脚支持体１２の２本の支持軸１５、１６にそれらの軸方向に沿って摺動させながら前後方向に移動される。この位置調節後には、ワンタッチロック機構３３のブレーキレバー３５を図６（Ｂ）に示すロック位置に回動させて、このレバー３５のカム部３５ａでブレーキシュー３４を支持軸１５に強く圧接することにより、前記摺動ができないように拘束して、つまり、脚支持体１２に対して脚載置部１３をロックできる。
【００３７】
このような位置調節に伴うワンタッチロック機構３３の操作は、そのブレーキレバー３５を既述のようにロック位置からロック解除位置へ回動させたり、この逆に、ロック解除位置からロック位置へ回動させるだけのワンタッチ操作により容易に行なうことができるので、脚載置部１３が有する施療用袋体２５を使用者の脚の被施療部に対し適正位置に容易に位置決めすることができる。
【００３８】
ところで、前記構成の椅子式エアーマッサージ機では、既に説明したように座部３の表面の後方への延長線と背凭れ４の背凭れ面との交点Ａから脚載置部１３の前後方向の中心に渡る基準距離Ｌを、２０歳〜８０歳の日本人男女の座位臀下腿最大囲距離Ｌの平均値、すなわち、６９５．７ｍｍに設定してある。又、脚載置部１３の可動範囲Ｓは、前記交点Ａから基準距離Ｌに達した位置を基点に、２０歳〜８０歳の日本人男女の下腿最大囲高Ｓのばらつき範囲に合致して定められ、すなわち、前記基点を中心に前後方向に±７５ｍｍに定められている。そして、この可動範囲Ｓ内での移動により使用者の体格に応じた脚載置部１３の位置調節ができるものである。
【００３９】
このように背凭れ４に寄り掛かって椅子本体１に座った使用者の脚が載置される脚載置部１３を、使用者の脹脛の頂部を中心として前記座位臀下腿最大囲距離Ｌを増減するように前後方向に移動して既述の位置調節を行なうことにより、前記下腿最大囲高Ｓのばらつきに拘らず、２０歳〜８０歳の日本人男女の使用であれば、万人に対して脚載置部１３が有する施療用袋体２５の中心部を使用者の脚の脹脛の頂部位置に適正に対応配置させることができる。したがって、この調節後にエアー給排気装置のエアー給排気動作で施療用袋体２５の膨張収縮（この動作は椅子本体１側の施療用袋体の膨張収縮と同時又は別個に行われる。）を繰り返すことにより、これら袋体２５により前記脹脛の頂部位置部分等を圧迫弛緩させて、効果的なマッサージをすることができる。すなわち、脚施療部１３の前記位置調節により２０歳〜８０歳の日本人男女の使用であれば施療用袋体２５と脚の被施療部との位置の不適合がなく使用可能であるから、使用感を向上することができる。
【００４０】
又、脚載置部１３を前後に摺動させるために、脚支持体１２の２本の支持軸１５、１６に脚載置部１３の一対の嵌合孔３１ａ、３２ａを摺動可能に嵌合させた構成によれば、脚支持体１２及び嵌合部材３１、３２の寸法のばらつき及び脚支持体１２の支持体ベース１４に対する２本の支持軸１５、１６の取付け位置のばらつき、及び脚載置部１３の底壁２１の裏面への嵌合部材３１、３２の取付け位置のばらつき等が集積する可能性がある。
【００４１】
しかし、こうしたばらつきに拘らず既述のように支持軸１５とこれへの嵌合部材３１の嵌合孔３１ａとを密に嵌合させたことにより、脚載置部１３を幅方向にがたつくことなく前後方向に移動させることができる。その結果、前記ばらつきの集積が支持軸１６とこれに嵌合した嵌合部材３２の嵌合孔３２ａとの嵌合部に集中するが、この部分においては、支持軸１６と嵌合孔３２ａとの間に遊び間隙Ｇを設けて支持軸１６に嵌合部材３２の遊嵌した構成であるから、前記遊び間隙Ｇによって前記ばらつきの集積を吸収することができ、それにより、支持軸１６とこれに嵌合した嵌合部材３２とが競ることを防止できる。
【００４２】
したがって、以上のように幅方向にがたついたり競ったりすることなく、脚支持体１２に対する脚載置部１３の前後方向の移動を円滑に行なわせることができ、それにより、使用感を向上することができる。
【００４３】
又、従来の技術に係る特開平８−３２２８９５号公報に記載のようにラック、歯車、歯車減速機構、及びモータからなる駆動装置を用いて脚載置部を前後に移動させる構成では、部品点数及び組立ての手間が多いためにコスト高であるばかりではなく、マッサージ機全体の重量が増えてしまうという問題がある。これに対して、この第１の実施の形態では、既述のように脚載置部１３を前後方向に移動させるのに特別に駆動装置を用いることなく、人力により脚載置部１３を前後に移動させるとともに、この位置調節後にワンタッチロック機構３３の手動操作で脚載置部１３を動かないように保持する構成であるから、部品点数及び組立ての手間を少なくできてコストダウンを図ることができるとともに、マッサージ機全体の重量を軽くでき、その持ち運び等を容易にできる点で優れている。
【００４４】
なお、本発明は前記第１の実施の形態には制約されない。例えば、背凭れがない椅子式マッサージ機にも適用できる。更に、施療子は膨張収縮する袋体には制約されるものではない。
【００４５】
【発明の効果】
本発明は、以上説明したような形態で実施され、以下に記載されるような効果を奏する。
【００４７】
請求項１に記載の発明によれば、脚載置部の嵌合部材及び脚支持体の２本の支持軸の寸法や取付け位置のばらつき等に拘らず、前記脚載置部の位置調節において脚載置部が幅方向にがたついたり、支持軸と嵌合部材とが競ることを防止しつつ、脚支持体に対して脚載置部を前後方向に円滑に移動できるので、使用感を向上できる。
【００４８】
更に、ブレーキレバーのワンタッチ回動操作により、脚載置部が有する施療子を使用者の脚の被施療部に対する適正位置に容易に位置決めすることができる。
【図面の簡単な説明】
【図１】本発明の第１の実施の形態に係る椅子式エアーマッサージ機全体の構成を示す斜視図。
【図２】（Ａ）は第１の実施の形態に係る椅子式エアーマッサージ機の構成を脚載置台を起こした状態で示す縦断側面図。
（Ｂ）は第１の実施の形態に係る椅子式エアーマッサージ機の構成を脚載置台を格納した状態で示す縦断側面図。
【図３】図１に示された椅子式エアーマッサージ機の脚載置台の構成を示す底面図。
【図４】図３中Ｚ−Ｚ線に沿う摺動支持部の断面図。
【図５】図３中Ｙ−Ｙ線に沿う摺動支持部の断面図。
【図６】（Ａ）は図３中Ｘ−Ｘ線に沿ってワンタッチロック機構の構成をロック解放状態で示す断面図。
（Ｂ）は図３中Ｘ−Ｘ線に沿ってワンタッチロック機構の構成をロック状態で示す断面図。
【図７】人体の座位姿勢を示す側面図。
【符号の説明】
１…椅子本体、３…座部、４…背凭れ、４ｂ…背凭れ板（背凭れ面）、１１…脚載置台、１２…脚支持体、１３…脚載置部、１５…支持軸、１６…支持軸、２５…施療用袋体（脚用施療子）、３１…嵌合部材、３２…嵌合部材、３１ａ…嵌合孔、３２ａ…嵌合孔、３３…ワンタッチロック機構、３４…ブレーキシュー、３５…ブレーキレバー、Ｇ…遊び間隙、Ｓ…可動範囲。 [0001]
BACKGROUND OF THE INVENTION
The present invention includes a leg mounting table disposed in front of a seat portion of a chair body, and is a leg treatment element provided on the leg mounting portion of the leg mounting table. The present invention relates to a chair type massage machine that can massage a leg.
[0002]
[Prior art]
Regardless of the physique difference due to the user's age, sex, etc., it is possible to move the leg placement part of the leg placement table arranged in front of the seat part of the chair body in the front-rear direction. This is superior in that the child can be arranged in accordance with the treated portion of the leg, and such a technique is proposed by the present applicant and is known as Japanese Patent Application Laid-Open No. 8-322895.
[0003]
In the chair type massage machine described in this publication, a rack is provided on the back surface of the leg placement unit, and a gear meshing with the rack, a motor for rotating the gear, a gear reduction mechanism, and the like are supported on the leg placement unit. It is provided on the side of the leg support (support base), and is configured to rotate the gear at a low speed by driving the motor to change the meshing between the gear and the rack, and to move the leg mounting portion in the front-rear direction. ing.
[0004]
[Problems to be solved by the invention]
Although moving the leg placement part in the front-rear direction is excellent as described above, the chair type massage machine described in the above publication does not have a description about the movement range of the leg placement part, It was difficult to say that it was possible to meet all of the various user conditions (the physique difference). For this reason, in developing a chair-type massage machine, in order to improve the feeling of use for everyone, it is necessary to be able to place a leg treatment element at an appropriate position with respect to the treatment area of the leg of everyone. It is desired.
[0006]
  The present invention tries to solveThe challenge is to improve usabilityAn object of the present invention is to obtain a chair type massage machine that can easily position the treatment element of the leg placement portion at an appropriate position of the user's leg with respect to the treatment portion.
[0009]
[Means for Solving the Problems]
  The invention of claim 1 includes a leg placement portion with a leg treatment element and the placement portion.Over a certain range of motionLeg mounting table having a leg support that is movably supported in the front-rear directionWhen,This mounting table is placed in front of the seat of the chair bodyAnd a one-touch lock mechanism for fixing the leg mounting table at an arbitrary position within the movable range.Assuming a chair-type massage machine,The problemIn order to solve the problem, the leg support part is slidably fitted to two support shafts extending in the front-rear direction of the leg support so that the leg support part is slid. The support is supported and the one support shaft of the two support shafts and the fitting hole of the fitting member fitted to the shaft are closely fitted, and the other support shaft and the support shaft A play gap is formed between the fitting hole of the fitting member fitted to the shaft.And the one-touch lock mechanism is provided so as to be able to rotate between a brake shoe contacting the one support shaft and a lock position and a lock release position. With brake lever to increase and decreaseIt is characterized by this.
[0010]
  thisClaim 1In the present invention, the two support shafts of the leg support support the leg placement portion via the fitting members fitted thereto, and the legs are provided along the axial direction, in other words, in the front-rear direction. Guide the movement of the placement section. By such a movement of the leg placement part, the treatment element of the leg placement part can be placed at an appropriate position with respect to the treatment part of the user's leg, and the treatment part can be massaged with the leg treatment element of the leg placement part. . Then, by tightly fitting the one support shaft and the fitting member to the one support shaft, the leg mounting portion can be moved without wobbling in the width direction, and the other support shaft and the fitting to the other support shaft. Due to the loose fitting of the joint member, this variation is absorbed by the play gap regardless of the dimensional variation of the fitting member and the two support shafts or the mounting position, etc. It is possible to prevent the fitted member from competing. Therefore, the movement of the leg mounting portion in the front-rear direction with respect to the leg support can be performed smoothly.
[0011]
  Furthermore, the invention of claim 1A brake shoe that is in contact with at least one of the two support shafts, and a brake that is rotatably provided between a lock position and a lock release position, and that increases or decreases the contact pressure of the brake shoe with respect to the support shaft by the rotation. One-touch lock mechanism with leverI have.
[0012]
  For this reason, the one-touch lock mechanismBrake lever from locked positionUnlock positionSince the contact pressure of the brake shoe with respect to the support shaft decreases, the shoe and the support shaft are allowed to move relative to each other, and the leg mounting portion is moved back and forth with respect to the leg support. It can be moved. Conversely, the brake leverUnlock positionSince the contact pressure with respect to the support shaft of the brake shoe is increased when it is rotated from the lock position to the lock position, the relative movement between the shoe and the support shaft is prohibited, and the brake shoe moves in the front-rear direction with respect to the leg mounting portion. The fixed leg mounting portion can be fixed so as not to move from the adjustment position.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.
[0014]
In FIG. 1 and FIG. 2 showing the chair type air massage machine according to the first embodiment, reference numeral 1 denotes a chair main body, and this main body 1 is composed of a metal main body frame 2, a seat portion 3, a backrest 4, and an armrest portion. 5 and 5 respectively. As shown in FIG. 2, the main body frame 2 connects a seat support pipe 2b (only one) to each of a pair of left and right leg pipes 2a (only one is shown), and a plurality of legs extend over the left and right leg pipes 2a. These connecting frames 2c are horizontally mounted, and a plurality of connecting frames 2d and 2e are horizontally mounted across the left and right seat support pipes 2b.
[0015]
The seat 3 is disposed on the seat support pipe 2b and the connecting frames 2d and 2e. The backrest 4 is disposed on the rear side of the seat portion 3 so as to be inclined at a predetermined angle with respect to the seat portion 3, and the armrest portions 5 are disposed on both sides of the seat portion 3 so as to cover the body frame 2. Has been. The backrest 4 is rotatably supported by a stay 6 projecting rearward from the rear ends of both seat support pipes 2b so as to be tilted up and down via a pivot 7, so that a reclining operation is possible. Is provided.
[0016]
That is, a gas spring 9 is disposed at one end of an arm 8 fixed to the connecting frame 2e below the seat 3 and the other end of the spring 9 is connected to the lower end of the backrest 4. It is pivotally attached to the protruding connecting end 4a. The gas spring 9 is biased in a direction in which the backrest 4 is always raised. The gas spring 9 is provided with a lock mechanism (not shown) for fixing the backrest 4 at an arbitrary position, and the locked state of this mechanism is released by a remote operation with an operation unit (not shown). Therefore, when the lock mechanism is unlocked, the backrest 4 is tilted by putting the weight on the backrest 4 and when the weight applied to the backrest 4 is reduced, the backrest 4 naturally occurs. it can.
[0017]
At least one treatment element, for example, a treatment bag body (not shown) that expands and contracts with the supply and exhaust of compressed air is disposed on at least the backrest 4 of the seat portion 3 and the backrest 4. These bags are made of a soft member having airtightness, are attached to the front surface of a backrest plate 4b that supports the back against the backrest 4, and support the collar against the seat 3 (not shown). It is attached to the upper surface of the seat plate. In addition, compressed air is supplied to and exhausted from the treatment bag body by an air supply / exhaust device (not shown) arranged below the seat portion 3 in the order specified by the operation unit such as a remote controller. ing. In addition, you may attach an acupressure protrusion to each bag body supplementarily.
[0018]
The chair body 1 is provided with a leg mounting table 11 disposed in front of the seat portion 3. As will be described below, the leg mounting table 11 includes a leg support 12 and a leg mounting part 13, and the leg mounting part 13 is formed so as to be movable in the front-rear direction.
[0019]
That is, as shown in FIG. 3, the leg support 12 is formed of a sheet metal support base 14 and two metal support shafts 15 and 16 having the same diameter. The support base 14 is formed by providing connection brackets 14a parallel to each other at both ends of a strip extending in the width direction of the chair body 1 by bending these ends at right angles. The connection bracket 14a is substantially L-shaped as shown in FIG. Both support shafts 15 and 16 are provided with their rear ends fixed to the inside of the corners of both ends of the support base 14 formed by bending the connecting bracket 14a by welding or screwing. Yes. Accordingly, the support shafts 15 and 16 extend in the front-rear direction and are arranged in parallel with each other, and are combined with the support base 14 so as to form a U-shape. Stopper protrusions 17 are attached to the front end portions of the support shafts 15 and 16, respectively.
[0020]
  As shown in FIG. 1 and FIG. 3, the leg placement portion 13 includes a bottom wall 21, side walls 22 formed on both sides of the bottom wall 21, and an intermediate portion of the bottom wall 21 parallel to the side walls 22. And a central wall 23 formed. Each of the wall portions 21 to 23 has a hollow structure communicating with each other, and a substantially U-shaped leg set groove 24 opened upward is formed between the central wall 23 and the side wall 22. A treatment bag body 25 (see FIG. 1) made of, for example, a soft member having airtightness is attached to each of the side wall 22 and the central wall 23 facing the set groove 24 as a leg treatment element. Each bag body 25 may be supplementarily provided with acupressure protrusions. theseThe bag body 25 isIt is connected to the air supply / exhaust device through an air hose piped through the inside of the leg placement portion 13. Each bag body 25 is inflated and contracted simultaneously by supplying and exhausting compressed air generated by this apparatus, and compresses and relaxes the legs. FIG. 3 shows a part of the air hose, 27 is a common air hose communicated with an air supply / exhaust device, 28 is an air hose communicated with a treatment bag body 25 attached to the side wall 22, and 29 is a center. An air hose communicating with the treatment bag 25 attached to the wall 23, or 30 is an air distributor.Show.
[0021]
The leg placement portion 13 is attached to the leg support 12 by the attachment structure shown in FIGS. That is, a pair of fitting members 31 and 32 extending in the front-rear direction are attached to the back surface of the bottom wall 22 of the leg placement portion 13. These fitting members 31 and 32 are made of metal formed by die casting or the like, and 31b and 32b in FIGS. 3 to 5 are projecting pieces for screwing. The fitting members 31 and 32 are independent parts in the first embodiment, but may be integrally formed. In such a case, the leg mounting of the fitting members 31 and 32 is performed. It is excellent in that there is no fear that the pitch between them will change regardless of the attachment to the portion 13.
[0022]
Since these fitting members 31 and 32 have a pipe shape, they have fitting holes 31a and 32a (see FIGS. 4 and 5) extending in the axial direction, respectively. The support shafts 15 and 16 are individually slidably fitted into the fitting holes 31a and 32a, respectively, so that the leg placing portion 13 is supported by the leg support 12 from the back side. Yes.
[0023]
In the fitting between the fitting members 31 and 32 and the support shafts 15 and 16 penetrating them in the axial direction, the tolerance between the fitting hole 31a of one fitting member 31 and the support shaft 15 fitted thereto is as follows. As shown in FIG. 4, the support shaft 15 and the fitting hole 31a are closely fitted so that there is almost no gap between them. On the other hand, the tolerance between the fitting hole 32a of the other fitting member 32 and the support shaft 16 fitted to the fitting hole 32 is set to be loose, thereby fitting with the support shaft 16 as shown in FIG. The holes 32a are fitted with a play gap G between them. In forming the play gap G, the fitting hole 32a may be a large-diameter hole similar in shape to the support shaft 16, but in the first embodiment, it is somewhat longer along the width direction of the leg mounting table 11, Therefore, it has a horizontally long elliptical shape. This is excellent in that the ability to absorb variations in the mounting position and the like in the width direction of the leg mounting table 11 can be further increased.
[0024]
The leg mounting portion 13 attached to the leg support 12 so as to be movable in the front-rear direction with the above-described configuration is provided in the following positional relationship with respect to the chair body 1 and extends in the front-rear direction over a predetermined movable range. It has been moved. That is, as shown in FIG. 2 (A), the intersection A between the backrest surface formed by the surface of the backrest plate 4b of the backrest 4 and the rearward extension line of the surface (upper surface) of the seat portion 3 will be described later. The reference distance L over the center of the movable range (a point that is exactly half the movable distance) is set to 695.7 mm. The movable range S is set to a range of ± 75 mm with the position reaching the reference distance L from the intersection A as a base point. In other words, the leg mounting base 11 is formed so that the leg mounting part 13 can move back and forth with respect to the leg support 12 over a range of ± 75 mm around the base point, and the plus direction (seat part) The movement in the direction away from 3) is restricted by the front ends of the cylindrical portions of the fitting members 31 and 32 coming into contact with the stopper convex portion 17, and conversely, the movement in the minus direction (direction approaching the seat portion 3) The rear end of the portion is restricted by hitting the support base 14. As for the movement distance in the minus direction, even if the leg placement portion 13 is set to be movable by 75 mm in the minus direction, the leg placement portion 13 hits the front end in consideration of the front end position of the seat portion 3. In some cases, the actual movement distance in the negative direction may be 75 mm or less.
[0025]
The reference distance L is the distance from the buttocks in the sitting position shown in the solid line in FIG. 7 to the top of the calf of the leg, in other words, the total average of Japanese men and women from the age of 20 to 80 regarding the maximum circumference of the sitting leg Value. This value is described in the 1992-1993 version of the human body measurement database of the Human Life Engineering Research Center. By the way, according to the above data, the average of the maximum sitting distance of male sitting heel and lower leg is 725.8 mm, and the average of the maximum surrounding distance of female sitting heel and lower leg is 665.7 mm. In addition, the range in which the leg placement unit 13 is movable in design, that is, the movable range S is the maximum lower leg height for each age of Japanese men and women from the age of 20 to 80 (that is, the solid line in FIG. 7). The maximum value of the maximum and minimum values of the distance from the sole in the standing state to the top of the calf of the leg shown by the combination of the two-dot chain line (refer to the maximum value for male 20 years old 359.8 mm in the table below) And the minimum value (see the female 40-year-old minimum value 210.3 mm in the table below), in other words, corresponds to the maximum variation value of the maximum lower leg height. Therefore, the length of the movable range S is set to (0 to 150) mm. This value is described in the human body measurement database of the human life engineering research center of the aforementioned social corporation, and the table showing the variation in the maximum circumference of the lower leg is shown below.
[0026]
[Table 1]

[0027]
  Further, at least one of the support shafts 15 and 16, for example, one sliding support portion formed by the support shaft 15 and the fitting member 31 fitted thereto as shown in FIG. A brake operation type one-touch lock mechanism 33 for fixing the leg placement part 13 at an arbitrary position within the movable range S is provided. As shown in FIGS. 3 and 6, the lock mechanism 33 includes a brake shoe 34 and a brake lever 35. An opening portion 36 that exposes the support shaft 15 is provided in a part of the axially intermediate portion of the fitting member 31, and the brake shoe 34 is accommodated in the opening portion 36. The shoe 34 has a brake surface 34a that is in contact with the support shaft 15 exposed at the opening 36, and an engagement recess 34b that is formed on the surface opposite to the brake surface 34a. The fitting member 31 is integrally provided with a pair of shaft support projections 37 located on both sides of the opening portion 36 and opposed to each other, and the support shaft 38 provided over the projections 37 has a base of the brake lever 35. The end is pivotally attached. A cam portion 35a that can be engaged with and disengaged from the engaging recess 34b is provided at the base end portion of the lever 35. The brake lever 35 is shown in FIG.Unlock positionAnd the lock position shown in FIG. 6 (B).
[0028]
  When the brake lever 35 is in the locked position, the cam portion 35a engages with the engaging recess 34a and the brake surface 34a of the brake shoe 34 is strongly pressed against the support shaft 15 so as to be fitted to the support shaft 15. 31 and thus the leg rest 13 can be fixed (locked) so as not to move. When the brake lever 35 is in the unlocked position,Cam part35a is disengaged from the engaging recess 34a, and the brake surface 34a of the brake shoe 34 is slightly contacted with the support shaft 15 or is not contacted with the support shaft 15, so that the fitting member 31 and thus the footrest are mounted on the support shaft 15. The placement unit 13 can be moved freely.
[0029]
The brake lever 35 is rotated manually. Further, in accordance with this turning operation, the cam portion 35a is engaged with and disengaged from the engaging recess 34b while overcoming the moderation portion indicated by the reference numeral 34c in FIGS. 6A and 6B of the brake shoe 34 while elastically deforming. In that case, a sense of moderation can be obtained. In addition, when the cam portion 35a is engaged with the engaging recess 34b, the brake lever 34 that receives the reaction force of the brake shoe 34 is held in the locked position.
[0030]
In the configuration in which the one-touch lock mechanism 33 is provided on the support shaft 15 side, the tolerance between the shaft 15 and the fitting hole 31a of the fitting member 31 fitted thereto is tightly fitted and rattled. Therefore, the present invention is superior in that the brake action at the arbitrary lock position described above can be surely exhibited rather than providing the one-touch lock mechanism 33 on the other support shaft 16 side.
[0031]
Further, the leg mounting table 11 having the above-described structure has a mounting position in a horizontal posture so as to be continuous with the front end of the seat portion 3 as shown in FIG. 2 (A), and a seat as shown in FIG. 2 (B). It is provided so as to be movable from the front end of the portion 3 to the storage position that is bent downward and forms a vertical posture. In order to enable such movement, a link mechanism 41 is provided across the main body frame 2 and the leg support 12. The output link 41a included in the mechanism 41 is pivotally attached to a pair of connecting brackets 14a included in the support base 14, and an operation handle 42 is connected to the input link 41b. The operation handle 42 is disposed outside the one armrest portion 5.
[0032]
By rotating the handle 42 so as to tilt backward from the state shown in FIG. 2B to the state shown in FIG. 2A, the link mechanism 41 operates so as to extend to the above-described position. The leg mounting table 11 can be arranged, and conversely, the link handle 41 is turned by turning the operation handle 42 backward from the state shown in FIG. 2A to the state shown in FIG. 2B. The leg mounting table 11 can be arranged at the storage position. A lock mechanism (not shown) is attached to the rotation shaft of the operation handle 42, and when the locking action is activated, the leg mounting table 11 is placed at an arbitrary angle position from the storage position to the mounting position and the above-described mounting position. Can be held, and the table 11 can be moved to a storage position or the like by releasing the lock of the leg mounting table 11 in accordance with an operation of a lock release operation unit (not shown) provided in the armrest 5 or the like.
[0033]
When the leg mounting table 11 is not used in the chair-type air massage machine having the above-described configuration, the table 11 may be disposed at the storage position on the front side of the seat portion 3, and when the leg mounting table 11 is used. The base 11 may be raised and disposed at the mounting position, and the user's legs may be individually accommodated and used in the leg setting groove 24 of the base 11.
[0034]
In this case, the leg mounting table 11 is in an appropriate position according to the physique of the user, that is, the substantially central portion of the treatment bag body 25 is a necessary part of the leg in the leg setting groove 24, for example, a standard calf. It is adjusted and arranged at a position corresponding to the top.
[0035]
  In this position adjustment, the brake lever 35 of the one-touch lock mechanism 33 is shown in FIG.Unlock positionThe leg mounting part 13 is moved back and forth with respect to the leg support 12 with the user's own hand or with the tip of the leg in a state in which the fitting member 32 is allowed to slide with respect to the support shaft 15. This is done without requiring any special power.
[0036]
At this time, the leg mounting portion 13 is moved in the front-rear direction while sliding the fitting members 31, 32 provided thereon on the two support shafts 15, 16 of the leg support 12 along their axial directions. The After this position adjustment, the brake lever 35 of the one-touch lock mechanism 33 is rotated to the lock position shown in FIG. 6B, and the brake shoe 34 is strongly pressed against the support shaft 15 by the cam portion 35a of the lever 35. Therefore, the leg mounting portion 13 can be locked with respect to the leg support 12 by restraining the sliding so as not to be performed.
[0037]
The operation of the one-touch lock mechanism 33 in accordance with such position adjustment is performed by rotating the brake lever 35 from the lock position to the lock release position as described above, or conversely, from the lock release position to the lock position. Since it can carry out easily by one-touch operation only to make it possible, the treatment bag body 25 which the leg mounting part 13 has can be easily positioned in an appropriate position with respect to the treatment part of a user's leg.
[0038]
By the way, in the chair type air massage machine of the said structure, as already demonstrated, it is the front-back direction of the leg mounting part 13 from the intersection A of the extension line to the back of the surface of the seat part 3, and the backrest surface of the backrest 4. The reference distance L across the center is set to the average value of the maximum distance L between the sitting and lower legs of Japanese men and women aged 20 to 80, that is, 695.7 mm. In addition, the movable range S of the leg resting portion 13 matches the variation range of the maximum lower leg height S of Japanese men and women between the ages of 20 and 80 based on the position reaching the reference distance L from the intersection A. That is, it is determined to be ± 75 mm in the front-rear direction around the base point. And the position adjustment of the leg mounting part 13 according to a user's physique can be performed by the movement within this movable range S.
[0039]
In this way, the leg resting portion 13 on which the leg of the user sitting on the chair body 1 leaning on the backrest 4 is placed, and the maximum surrounding distance L of the above-mentioned sitting position crus around the top of the calf of the user is set. By moving in the front-rear direction so as to increase or decrease and adjusting the position as described above, regardless of the variation in the maximum lower leg height S, if it is used by Japanese men and women aged 20 to 80 years, On the other hand, the center portion of the treatment bag body 25 included in the leg placement portion 13 can be appropriately arranged to correspond to the top position of the calf of the user's leg. Therefore, after this adjustment, the expansion / contraction of the treatment bag body 25 (this operation is performed simultaneously or separately with the expansion / contraction of the treatment bag body on the chair body 1 side) by the air supply / exhaust operation of the air supply / exhaust device. Thus, the bag body 25 compresses and relaxes the top position portion of the calf so that an effective massage can be performed. That is, if the position adjustment of the leg treatment unit 13 is used by Japanese men and women between the ages of 20 and 80, it can be used without any incompatibility between the position of the treatment bag 25 and the treatment part of the legs. A feeling can be improved.
[0040]
Further, in order to slide the leg placement part 13 back and forth, the pair of fitting holes 31a and 32a of the leg placement part 13 are slidably fitted to the two support shafts 15 and 16 of the leg support 12. According to the combined configuration, the dimensional variation of the leg support 12 and the fitting members 31, 32, the variation of the mounting positions of the two support shafts 15, 16 with respect to the support base 14 of the leg support 12, and the legs There is a possibility that variations in the mounting positions of the fitting members 31 and 32 on the back surface of the bottom wall 21 of the mounting portion 13 are accumulated.
[0041]
However, regardless of such variations, as described above, the support shaft 15 and the fitting hole 31a of the fitting member 31 are closely fitted to each other so that the leg placement portion 13 is rattled in the width direction. It can be moved back and forth. As a result, the accumulation of variations concentrates on the fitting portion between the support shaft 16 and the fitting hole 32a of the fitting member 32 fitted thereto. In this portion, the support shaft 16 and the fitting hole 32a Since the play gap G is provided between the support member 16 and the fitting member 32 is loosely fitted to the support shaft 16, the play gap G can absorb the accumulation of variations. It is possible to prevent the fitting member 32 fitted in the race from competing.
[0042]
Therefore, it is possible to smoothly move the leg mounting portion 13 in the front-rear direction with respect to the leg support 12 without rattling or competing in the width direction as described above, thereby improving the feeling of use. can do.
[0043]
Further, as described in Japanese Patent Laid-Open No. 8-322895 related to the prior art, in the configuration in which the leg mounting portion is moved back and forth using a driving device including a rack, a gear, a gear reduction mechanism, and a motor, the number of parts is reduced. In addition, there is a problem that not only is the cost high due to the large amount of time and effort of assembly, but also the weight of the entire massage machine increases. On the other hand, in the first embodiment, as described above, the leg placement unit 13 is moved back and forth by human power without using a driving device to move the leg placement unit 13 in the front-rear direction. Since the leg placement unit 13 is held so as not to move by manual operation of the one-touch lock mechanism 33 after the position adjustment, the number of parts and the labor of assembly can be reduced, and the cost can be reduced. It is excellent in that it can reduce the weight of the entire massage machine and can easily carry it.
[0044]
  The present invention is not limited to the first embodiment.For example, there is no backrestIt can also be applied to chair type massage machines.Furthermore, the treatment childThe bag body that expands and contracts is not limited.
[0045]
【The invention's effect】
The present invention is implemented in the form as described above, and has the following effects.
[0047]
  Claim 1According to the invention described in (4), the leg placement is performed in the position adjustment of the leg placement part regardless of the dimensions of the two support shafts of the leg placement part and the two support shafts of the leg support and the variation in the mounting position. The leg placement part can be smoothly moved in the front-rear direction with respect to the leg support while preventing the part from rattling in the width direction and the support shaft and the fitting member competing with each other. .
[0048]
  In addition, the brake leverBy the one-touch rotation operation, the treatment element of the leg placement portion can be easily positioned at an appropriate position of the user's leg with respect to the treatment portion.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a configuration of an entire chair-type air massage machine according to a first embodiment of the present invention.
FIG. 2A is a longitudinal side view showing the configuration of the chair-type air massage machine according to the first embodiment in a state where the leg placing table is raised.
(B) is the vertical side view which shows the structure of the chair type air massage machine which concerns on 1st Embodiment in the state which stored the leg mounting base.
FIG. 3 is a bottom view showing a configuration of a leg mounting table of the chair type air massage machine shown in FIG. 1;
4 is a cross-sectional view of a sliding support portion taken along line ZZ in FIG.
5 is a cross-sectional view of a sliding support portion taken along line YY in FIG.
6A is a sectional view showing the configuration of the one-touch lock mechanism in the unlocked state along line XX in FIG. 3; FIG.
(B) is sectional drawing which shows the structure of a one-touch lock mechanism in a locked state along the XX line in FIG.
FIG. 7 is a side view showing a sitting posture of a human body.
[Explanation of symbols]
    DESCRIPTION OF SYMBOLS 1 ... Chair main body, 3 ... Seat part, 4 ... Backrest, 4b ... Backrest board (backrest surface), 11 ... Leg mounting base, 12 ... Leg support, 13 ... Leg mounting part, 15 ... Support shaft, DESCRIPTION OF SYMBOLS 16 ... Support shaft, 25 ... Treatment bag (leg treatment element), 31 ... Fitting member, 32 ... Fitting member, 31a ... Fitting hole, 32a ... Fitting hole, 33 ... One-touch lock mechanism, 34 ... Brake shoe, 35 ... Brake lever, G ... Play gap,S: The movable range.

Claims (1)

A footrest base having a leg support member that movably supports the longitudinal direction footrest portion and the mounting portion with the leg massaging child over a predetermined movable range, the seat of the chair body this table In a chair type massage machine provided with a one-touch lock mechanism that is disposed in the front and that fixes the leg mounting table at an arbitrary position within the movable range ,
A fitting member included in the leg mounting portion is slidably fitted to two support shafts extending in the front-rear direction of the leg support body to support the leg mounting portion on the leg support body. In addition, one of the support shafts and the fitting hole of the fitting member fitted to the shaft are closely fitted, and the other support shaft is fitted to the shaft. And forming a play gap between the fitting holes of the fitting member ,
The one-touch lock mechanism is provided so as to be able to rotate between a brake shoe in contact with the one support shaft and a lock position and an unlock position, and a brake lever that increases or decreases the contact pressure of the brake shoe with respect to the support shaft by the rotation. A chair-type massage machine characterized by having

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