WO2006027822A1 - Seating mechanism and chair - Google Patents

Seating mechanism and chair Download PDF

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Publication number
WO2006027822A1
WO2006027822A1 PCT/JP2004/012852 JP2004012852W WO2006027822A1 WO 2006027822 A1 WO2006027822 A1 WO 2006027822A1 JP 2004012852 W JP2004012852 W JP 2004012852W WO 2006027822 A1 WO2006027822 A1 WO 2006027822A1
Authority
WO
WIPO (PCT)
Prior art keywords
seat plate
seating
seating mechanism
mechanism according
control unit
Prior art date
Application number
PCT/JP2004/012852
Other languages
French (fr)
Japanese (ja)
Other versions
WO2006027822A8 (en
Inventor
Yukie Takahashi
Original Assignee
Yukie Takahashi
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yukie Takahashi filed Critical Yukie Takahashi
Priority to JP2006534935A priority Critical patent/JPWO2006027822A1/en
Priority to PCT/JP2004/012852 priority patent/WO2006027822A1/en
Priority to US11/661,672 priority patent/US20070252419A1/en
Publication of WO2006027822A1 publication Critical patent/WO2006027822A1/en
Publication of WO2006027822A8 publication Critical patent/WO2006027822A8/en

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Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C3/00Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/02Rocking chairs
    • A47C3/025Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame
    • A47C3/026Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame with central column, e.g. rocking office chairs; Tilting chairs
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C3/00Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/02Rocking chairs
    • A47C3/025Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C7/00Parts, details, or accessories of chairs or stools
    • A47C7/02Seat parts
    • A47C7/14Seat parts of adjustable shape; elastically mounted ; adaptable to a user contour or ergonomic seating positions
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C9/00Stools for specified purposes
    • A47C9/002Stools for specified purposes with exercising means or having special therapeutic or ergonomic effects

Definitions

  • the present invention relates to a seating mechanism and a chair.
  • This seating tool is installed on the bottom surface of the chair, and is supported by a fulcrum member provided on the lower surface of the seat plate so that the seat plate can rotate, and provided on the lower surface of one free end of the seat plate.
  • the seat plate is elastically supported upward by the elastic member around the fulcrum member.
  • Patent Document 1 JP-A-11-244099
  • An object of the present invention is to provide a seating mechanism and a chair that can be used.
  • the present inventor has conducted earnest research and has maintained a posture in which the heels can stand up while being seated simply by maintaining a sitting state with the posture of the front center of gravity. By doing so, it was found that appropriate tension can be maintained in various muscles of the body, and the present invention has been completed.
  • the seating mechanism according to the present invention is provided with a support portion provided on the holding body, a seat plate provided so as to be movable in a substantially vertical direction with the support portion as a center, and a support portion interposed therebetween.
  • a force in the vertical direction is applied to the seat plate, a force against the force is applied to the seat plate, or two control units are provided to apply the force.
  • the two control units are a first control unit disposed forward of the support unit in the seating direction and a second control unit disposed rearward of the support unit in the seating direction. It is desirable to consist of
  • the first control unit applies a substantially vertical upward resistance to the seat plate, and the second control unit applies a substantially vertical downward resistance to the seat plate. It is useful to apply.
  • the first control unit is not particularly limited as long as it is a member that repels compression and the second control unit is a member that resists traction (pull).
  • the seat plate is provided so as to be movable around the support portion provided on the holding body.
  • the seat plate tilts according to the load balance of the seated person.
  • the seating mechanism is installed at an appropriate height level according to the height of the seated person to When hanging, for example, if the center line of gravity of the seated person hangs slightly rearward of the support part, the seat plate tilts so that the rear side part in the seating direction is pushed down, and an easy seating posture is obtained.
  • the toe more precisely, the middle foot phalanx joint (MP) joint
  • MP middle foot phalanx joint
  • control unit first control unit
  • the control unit (first control unit) positioned in front of the support unit is positioned in the front side portion of the seat plate in a vertical direction against the force (load of the seated person) below the vertical.
  • the upper force is applied, and the force on the upper side against the force that is pulled up vertically from the control unit (second control unit) located behind the support unit is applied to the rear side part.
  • a force that causes the seat plate to return to the initial posture state (for example, a substantially horizontal state) acts on the entire seat plate.
  • the first control unit is provided so as to pre-urge the seat plate vertically upward, and the second control unit pre-bias the seat plate vertically downward. It is preferable that it is provided.
  • the displacement of the seat plate can be reduced when obtaining the same load as the case where the seat plate is not biased in advance as the load on the muscle group. Therefore, the seat plate and the second Since the operations of the first and second control units are reduced, durability is improved.
  • the seat plate has a convex portion provided in front of the support portion in the seating direction, more preferably in the front end portion.
  • the convex part includes a shape that is slightly raised from the seat plate that is clearly 'convex', and feels painful when contacting the back side of the thigh of the seated person. An accompaniment is preferable.
  • the thigh of the seated person is supported by being in contact with the convex portion, and as described above, if the knee indirect is lowered by driving the femur so that the heel is attached to the floor surface, The convex part becomes the 'action point' of vertically downward force, and the front side of the seat plate is pushed down. Also, the convex portion becomes the “fulcrum” of the femoral movement, and the hip joint moves upward by the lever principle. These movements extend the hip joints, making it easier to moderately tension the extensor and flexor muscles of the lower leg.
  • the force can be concentrated on the convex portion, the force expressed due to the muscle tension of the seated person can be prevented from spreading over a wide area of the seat plate, It becomes easier to push down the front part.
  • the support portion when the support portion is provided so as to extend in the width direction of the seat plate, the support portion facilitates demarcation of the seat plate in the front-rear direction and thus the seating direction. Since it becomes easy to arrange
  • the two control units may be elastic bodies and / or cylinder devices.
  • the elastic body include various springs and rubbers
  • examples of the cylinder device include a cylindrical air pressure, a hydraulic cylinder, a damper, and the like.
  • the support portion is provided so that its position in the seating direction can be adjusted. This makes it possible to arbitrarily adjust the relative positional relationship between the position of the center of gravity in the seated state and the support portion functioning as the “fulcrum” according to the body shape of the seated person.
  • a chair according to the present invention functions effectively with the seating mechanism of the present invention, and includes the above-described seating mechanism of the present invention and a leg on which the seating mechanism is installed.
  • FIG. 1 is a perspective view schematically showing a preferred embodiment of a seating mechanism according to the present invention and a chair including the seating mechanism.
  • 2 and 3 are a front view and a rear view of the seating mechanism and the chair shown in FIG. 1, respectively.
  • FIG. 4 is a cross-sectional view taken along the line IV-IV shown in FIG.
  • the chair 10 is one in which a sitting tool 1 (sitting mechanism) is installed on a leg 2.
  • the seating tool 1 includes a seat plate 11 mainly formed of a substantially rectangular plate-like member and a bottom plate 12 (holding portion) formed of a substantially identical plate-like member.
  • a support portion 13 having a substantially trapezoidal cross section is interposed between the seat plate 11 and the bottom plate 12 so as to extend in the width direction of the bottom plate 12.
  • the bottom wall surface of the seat plate 11 is in contact with the upper end of the support portion 13.
  • the support portion 13 is provided such that a front-rear position in a seating direction (a direction perpendicular to the support portion 13 in the drawing) can be arbitrarily adjusted.
  • a known gear-gear-type moving rail (not shown) provided on the bottom plate 12 or a plurality of fitting grooves formed on the bottom plate 12 so that the support portion 13 is fitted ( (Not shown).
  • a plurality of springs 14 (first control portion as a whole) force along the edge of the bottom plate 12 It is fixed.
  • These springs 14 are in contact with the bottom wall surface of the seat plate 11 in a compressed state when the seat plate 11 is stationary.
  • the upper end of the spring spring 14 is the bottom wall of the seat plate 11 It may or may not be fixed to the surface.
  • a plurality of piercing springs 15 (second control portion as a whole) force on the edge of the bottom plate 12 It is fixed along. These springs 15 are fixed to the bottom wall surface of the seat plate 11 in an expanded state when the seat plate 11 is stationary.
  • a fixing portion 17 having a substantially trapezoidal cross section is provided on the edge of the bottom plate 12 further rearward than the spring spring 15 so as to extend in the width direction of the bottom plate 12. It is installed.
  • the fixing portion 17 has a height lower than that of the support portion 13, and the seat plate 11 has a certain distance from the fixing portion 17 when the seat plate 11 is placed on the support portion 13. Arranged.
  • the upper surface of the front end portion of the seat plate 11 in the seating direction (more specifically, the position where the plurality of springs 14 are provided) has a substantially trapezoidal cross-section that gently rises.
  • the convex part 16 is provided so as to extend in the width direction of the bottom plate 12.
  • the leg body 2 includes a leg holder 21 fixed to a substantially central portion of the bottom wall surface of the bottom plate 12, and a telescopic rod having an upper end connected to the leg holder 21 so as to be rotatable in the circumferential direction. 23 and a hydraulic cylinder 24 to which the other end of the telescopic rod 23 is connected.
  • a seat height adjustment lever 22 that can be pivoted in the vertical direction is provided on the peripheral wall of the telescopic rod 23, and the hydraulic cylinder 24 is driven by moving the lever 22 so that the telescopic rod 23 expands and contracts.
  • the hydraulic cylinder 24 is fixed to a leg seat having a plurality of legs 25.
  • FIG. 5 is a side view schematically showing a state where a person is seated on another preferred embodiment of the seating mechanism and the chair including the same according to the present invention.
  • the chair 30 is configured in the same manner as the chair 10 except that an appropriate cushion material 3 is attached to the upper surface of the seat plate 11 of the sitting tool 1.
  • the seat height adjustment lever 22 is operated to adjust the length of the telescopic rod 23 by the hydraulic cylinder 24 so as to match the height of the seated person H.
  • the length of the telescopic rod 23 stands up in front of the chair 30 so that the vertical level of the seat plate 11 is, for example, about 3-10 cm higher than the popliteal (the part with the heel behind the knee). Is preferable.
  • the toe MP joint It is desirable to set the height of the seat 11 so that it touches the floor.
  • the front-rear position of the support portion 13 that functions as a “fulcrum” for tilting the seat plate 11 is adjusted as appropriate. Specifically, it is preferable to adjust the position of the support portion 13 so that the support portion 13 is positioned in the vicinity of the greater trochanter (the uppermost end of the femur) of the seated person.
  • the extension of the hip joint causes the extensor and flexor muscles of the lower leg to be moderately tensioned and the contraction of the gluteal and hamstring muscles in the hip joint. Furthermore, in order to fix the joints, the gluteal muscles, one of the flexor muscles, also contract.
  • the spring 14 provided below the front end of the seat plate 11 is vertically upward so as to repel compression caused by the load of the seated person H.
  • a force is applied to the front edge of the seat plate 11.
  • the seat plate 11 is returned to the horizontal state, but is pushed up to a position where the load of the seated person H and the repulsive force of the spring 14 can be balanced.
  • the seat plate 11 can be pulled by the tensile force of the spring spring 15. Since the front end of the seat is further pushed up (see arrow Y in the figure), the seated person H needs to further tighten the muscles necessary to maintain the forward leaning posture.
  • the repulsive force of the heel spring 14 and the tensile force of the heel spring 15 cause the seat plate 11 to be strongly restored in the horizontal direction. If this happens, the seat plate 11 can be easily restored to the initial horizontal state. When this happens, the pelvis is tilted backwards and the original comfortable seating state occurs.
  • the hip joint is easy to come into contact with the convex portion at the intermediate position and the external rotation position.
  • the internal rotator muscle group including the muscles, the external rotator muscle group including the piriform muscle, and the extensor and flexor muscles of the hip joint need to be moderately tensioned. Conversely, if such muscle tone is sustained, the development of their strength can be promoted, and as a result, the damage that can occur in the hip joint can be effectively prevented.
  • the hamstring muscle (the biceps femoris muscle, the semi-healthy half-arm) is a muscle that extends the hip joint and starts at the sciatic nodule Membrane It is necessary to maintain the (muscle) tension moderately and continuously or intermittently. On the other hand, maintaining such muscle tension also causes moderate tension in the quadriceps, the flexor of the hip joint. Thereby, muscle atrophy of the thigh can be suppressed, and thus it is possible to prevent a decrease in muscle strength of the anti-gravity muscle of the thigh.
  • the gluteal muscles of the hip extensor muscle group, the gluteus maxims muscles involved in abduction, and the minors involved in internal rotation and abduction in the pelvis Appropriate muscle tone of the gluteus is also maintained continuously or intermittently. In this way, the atrophy of these muscles is suppressed, and weakening of the muscular strength can be prevented. In addition, from a cosmetic point of view, the so-called hip-up effect is achieved.
  • moderate abdominal muscle tension is a predictor of the occurrence of disorders such as visceral sag due to muscle weakness. It can also contribute to prevention. In addition, from the cosmetic point of view, the effect of tightening the waist can be obtained.
  • the spring 14 is in contact with the bottom wall surface of the seat plate 11 in a compressed state when the seat plate 11 is stationary, the front side portion of the seat plate 11 is vertically Pre-biased upward. Accordingly, the seat plate 11 is further restored to a substantially horizontal state, so that the load on the muscle group necessary for the seated person H to maintain the forward leaning posture is increased, and as a result, the various effects described above are enhanced. It is done.
  • the spring 15 is fixed to the bottom wall surface of the seat plate 11 in an expanded state in a state where the seat plate 11 is stationary, the rear side portion of the seat plate 11 is vertical. Pre-biased downward. As a result, the seat plate 11 is further restored to the substantially horizontal state, so that the load on the muscle group necessary for the seated person H to maintain the forward leaning posture is further increased. The effect is further enhanced.
  • the springs 14 and 15 are provided in such a manner as to urge the seat plate 11 in advance, the seat plate 11 is urged in such a manner. Compared with the lesser displacement and displacement, the same muscular load can be applied to the seated person H. Therefore, the operations of the seat plate 11 and the springs 14 and 15 are reduced, so that the durability when repeatedly used can be improved.
  • the present invention is not limited to the above-described embodiment, and various modifications can be made without changing the gist thereof.
  • the springs 14 and 15 instead of the springs 14 and 15, other springs, rubber or other elastic bodies may be used, or a cylindrical air pressure or hydraulic cylinder or a cylinder device such as a damper may be used.
  • the spring springs 14 and 15 and the other first control unit and second control unit may be connected and formed integrally, for example.
  • the number and arrangement of the spring springs 14 and 15 are not limited to those shown in the figure, and a plurality of springs may be united, and the seat plate 11 may not be biased in advance.
  • the spring constants of the springs 14 and 15, that is, the resistance to which they are expressed are It can be appropriately adjusted according to the weight, body shape, muscle strength, etc. of the person H.
  • the spring 15 disposed on the rear side can be adjusted.
  • the spring springs 14 and 15 are provided detachably with respect to the bottom plate 12 and / or the seat plate 11, the replacement becomes easy and the maintainability is improved.
  • the leg 2 functions as a holding body. In this way, the number of members can be reduced and the maintainability can be further improved.
  • a backrest, a handrail, an armrest or the like may be provided.
  • the convex portion 16 may not be provided, but it is preferable that the convex portion 16 is provided, and it does not have to extend integrally. May be provided.
  • the seat plate 11 may be circular and the chairs 10 and 30 may be circular chairs.
  • the seating mechanism and the chair including the seating mechanism according to the present invention are provided with the above-described support portion and the two control portions, so that various distortions and various obstacles that may occur in the body are more effective and comprehensive than before. Moreover, since it can be easily prevented and corrected, it can be widely used for body treatment and beauty.
  • FIG. 1 is a perspective view schematically showing a preferred embodiment of a seating mechanism and a chair including the same according to the present invention.
  • FIG. 2 is a front view of the seating mechanism and chair shown in FIG.
  • FIG. 3 is a rear view of the seating mechanism and chair shown in FIG. 1.
  • FIG. 4 is a cross-sectional view taken along line IV-IV shown in FIG.
  • FIG. 5 is a side view schematically showing a state in which a person is seated on another preferred embodiment of a seating mechanism and a chair including the same according to the present invention.

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  • Orthopedics, Nursing, And Contraception (AREA)
  • Chairs Characterized By Structure (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)

Abstract

A seating mechanism and a chair. The seating mechanism comprises a support part formed on a holding body, a seat plate formed to be loosely moved about the support part in an approximately vertical direction, and two control parts formed on both sides of the support part so that, when a force acts on the seat plate in the vertical direction, a force against that force can be applied to the seat plate. Also, the chair is formed by installing the seating mechanism on a leg body.

Description

明 細 書  Specification
着座機構及び椅子  Seating mechanism and chair
技術分野  Technical field
[0001] 本発明は、着座機構及び椅子に関する。  [0001] The present invention relates to a seating mechanism and a chair.
背景技術  Background art
[0002] 一般に、椅子は、安楽に腰掛けることを企図した構造を有するものが多い。例えば 、背もたれを有する椅子では、着座者は、背もたれに背中を当てた姿勢で座る傾向 にある。この場合、着座者は、後ろ重心の姿勢になりがちである。このような姿勢で、 例えば机に向力うと、背部が曲げられ且つ腹部が圧迫される前屈みの状態となって 前傾した頭部を首及び肩の筋肉で支えることとなるため、肩こりが起こり易い。  [0002] Generally, many chairs have a structure intended to be comfortably seated. For example, in a chair with a backrest, the occupant tends to sit in a posture with his back against the backrest. In this case, the seated person tends to be in the posture of the back center of gravity. In such a posture, for example, when facing the desk, the back is bent and the abdomen is pressed, and the head tilted forward is supported by the neck and shoulder muscles, causing stiff shoulders. easy.
[0003] また、 自律神経の健全な働きは、交感神経と副交感神経の均衡がとれた働きによつ て維持されることが知られている。ところが、上記のような前屈みの姿勢で長時間のデ スクワークを続けると、疲労が重なって身体的には副交感神経の働きを要求するにも かかわらず、デスクワークには交感神経の働きが要求されるため、交感神経を強制的 に緊張させる必要が生じてしまう。その結果、交感神経の働きと副交感神経の働きと の不均衡が引き起こされ、ストレス(交感神経過緊張)を増長させる原因となる。  [0003] It is also known that the healthy functioning of the autonomic nerve is maintained by the balanced action of the sympathetic nerve and the parasympathetic nerve. However, if deskwork is continued for a long time with the above-mentioned bending posture, desk work requires the function of sympathetic nerves, despite the fact that fatigue overlaps and physically requires the function of parasympathetic nerves. For this reason, it becomes necessary to force the sympathetic nerves to be forced. As a result, an imbalance between the functions of the sympathetic nerve and the parasympathetic nerve is caused, which increases stress (sympathetic nerve overstress).
[0004] このような不都合を解消すベぐ本発明者は、特許文献 1記載の着座具を提案した 。この着座具は、椅子の底面に設置され、座板の下面に設けられた支点部材によつ て座板が回動自在に支持されると共に、その座板の片側自由端の下面に設けられた 弾性部材によってその座板が支点部材を中心に上方向に弾性的に支持されて成る ものである。この着座具を用いると、交感神経を上位支配とすべきデスクワーク時に、 座板に腰掛けた着座者が弾性部材の弾性力に杭して座板の片側自由端を押圧する 前重心の姿勢で腰掛けることができ、もって交感神経の正常な働きを促すことが可能 となる。  [0004] The present inventor who should eliminate such inconvenience has proposed a sitting tool described in Patent Document 1. This seating tool is installed on the bottom surface of the chair, and is supported by a fulcrum member provided on the lower surface of the seat plate so that the seat plate can rotate, and provided on the lower surface of one free end of the seat plate. The seat plate is elastically supported upward by the elastic member around the fulcrum member. With this seating tool, when deskwork should be controlled with sympathetic nerves as the upper control, the seated person sitting on the seat plate stakes on the elastic force of the elastic member and presses the free end of one side of the seat plate in the posture of the front center of gravity. Therefore, it is possible to promote the normal functioning of the sympathetic nerve.
特許文献 1 :特開平 11-244099号公報  Patent Document 1: JP-A-11-244099
発明の開示  Disclosure of the invention
[0005] ところで、近年では、他の種々なストレスや生活習慣の変化による身体機能の低下 が目立ったり、それが要因の一つとなって身体に様々な歪みや種々の障害がますま す生じ易くなつてきており、 自律神経の正常な活動を促進するのみならず、それらの より効果的且つ総合的な予防及び矯正方法を確立することが熱望されている。 [0005] By the way, in recent years, physical function decline due to various other stresses and changes in lifestyle habits. Is becoming more prominent and is becoming more likely to cause various distortions and various disorders in the body, not only promoting the normal activity of the autonomic nerves, but also making them more effective There is a strong desire to establish a comprehensive prevention and correction method.
[0006] その一方で、上記のような不都合を解消するために、旧来力 、医薬を用いたり、手 技を定期的に受ける等の治療方法が行われているが、手間、時間、及び費用が掛か つてしまうことから、より簡便な予防及び矯正手段も求められている。  [0006] On the other hand, in order to solve the above inconveniences, treatment methods such as using traditional force, using medicine, and receiving a procedure regularly have been carried out. Therefore, simpler preventive and corrective measures are also required.
[0007] そこで、本発明は、力かる事情に鑑みてなされたものであり、身体に生じ得る様々な 歪みや種々の障害を、従来よりも効果的且つ総合的にしかも簡便に予防及び矯正 することが可能な着座機構及び椅子を提供することを目的とする。  [0007] Therefore, the present invention has been made in view of intensive circumstances, and prevents and corrects various distortions and various obstacles that can occur in the body more effectively, comprehensively and simply than before. An object of the present invention is to provide a seating mechanism and a chair that can be used.
[0008] 上記課題を解決するために、本発明者は、鋭意研究を重ねたところ、単に前重心 の姿勢で腰掛けた状態を維持するだけでなぐ着座しつつも恰も起立するような姿勢 を保持することにより、身体に備わる様々な筋に適度な緊張を持続させることができる ことを見出し、本発明を完成するに至った。  [0008] In order to solve the above-mentioned problems, the present inventor has conducted earnest research and has maintained a posture in which the heels can stand up while being seated simply by maintaining a sitting state with the posture of the front center of gravity. By doing so, it was found that appropriate tension can be maintained in various muscles of the body, and the present invention has been completed.
[0009] すなわち、本発明による着座機構は、保持体に設けられた支持部と、支持部を中 心として略鉛直方向に遊動可能に設けられた座板と、支持部を挟んで設けられてお り且つ座板に鉛直方向の力が作用したときにその力に抗する力を座板に印加する、 又は印加するように設けられた二つの制御部とを備える。  That is, the seating mechanism according to the present invention is provided with a support portion provided on the holding body, a seat plate provided so as to be movable in a substantially vertical direction with the support portion as a center, and a support portion interposed therebetween. In addition, when a force in the vertical direction is applied to the seat plate, a force against the force is applied to the seat plate, or two control units are provided to apply the force.
[0010] 具体的には、二つの制御部は、着座方向において支持部よりも前方に配された第 1の制御部と、着座方向において支持部よりも後方に配された第 2の制御部と、から 成ることが望ましい。  [0010] Specifically, the two control units are a first control unit disposed forward of the support unit in the seating direction and a second control unit disposed rearward of the support unit in the seating direction. It is desirable to consist of
[0011] より具体的には、第 1の制御部は、座板に略鉛直上向きの抗カを印加するものであ り、第 2の制御部は、座板に略鉛直下向きの抗カを印加するものであると有用である 。換言すれば、第 1の制御部は、圧縮に反発するような部材であり、第 2の制御部は、 牽引(引張り)に抵抗するような部材であれば、特に制限されない。  More specifically, the first control unit applies a substantially vertical upward resistance to the seat plate, and the second control unit applies a substantially vertical downward resistance to the seat plate. It is useful to apply. In other words, the first control unit is not particularly limited as long as it is a member that repels compression and the second control unit is a member that resists traction (pull).
[0012] このように構成された着座機構においては、座板が保持体に設けられた支持部を 中心にして遊動可能に設けられているので、てこの原理により、支持部が言わば'支 点'となってそれを境にして着座者の荷重バランスに応じて座板が傾動する。  In the seating mechanism configured as described above, the seat plate is provided so as to be movable around the support portion provided on the holding body. The seat plate tilts according to the load balance of the seated person.
[0013] すなわち、着座者の身長に応じて適度な高さレベルにこの着座機構を設置して腰 掛けるとき、例えば、着座者の重心線が支持部のやや後方に垂下すれば、着座方向 における後方側の部位が押し下げられるように座板が傾動し、安楽な着座体勢となる 。一方、つま先(より厳密には、中足趾節 (MP)関節)が床面に接するように重心を前 にずらして着座すれば、座板は略水平状態とされ、さらに踵が床面につくように大腿 骨を動かしてやや前重心の体勢をとると、膝関節が下がって座板の前方側が押し下 げられる。これにより、座板が前傾し、着座者も前傾姿勢となる。 That is, the seating mechanism is installed at an appropriate height level according to the height of the seated person to When hanging, for example, if the center line of gravity of the seated person hangs slightly rearward of the support part, the seat plate tilts so that the rear side part in the seating direction is pushed down, and an easy seating posture is obtained. On the other hand, if the toe (more precisely, the middle foot phalanx joint (MP) joint) is seated with the center of gravity shifted forward so that it touches the floor surface, the seat plate will be in a substantially horizontal state, and the heel will rest on the floor surface. If you move the femur so that it is in a posture that is slightly at the front center of gravity, the knee joint is lowered and the front side of the seat is pushed down. As a result, the seat plate is tilted forward, and the seated person is also tilted forward.
[0014] こうなると、座板の前方側の部位には、支持部よりも前方に位置する制御部(第 1の 制御部)から、鉛直下方の力(着座者の荷重)に対抗して鉛直上方の力が印加される と共に、同後方側の部位には、支持部よりも後方に位置する制御部(第 2の制御部) から、鉛直上方へ引き上げる力に対抗して鉛直上方の力が印加される。これにより、 座板が初期の姿勢状態 (例えば略水平状態)に復帰するような力が座板全体に作用 する。 [0014] In this case, the control unit (first control unit) positioned in front of the support unit is positioned in the front side portion of the seat plate in a vertical direction against the force (load of the seated person) below the vertical. The upper force is applied, and the force on the upper side against the force that is pulled up vertically from the control unit (second control unit) located behind the support unit is applied to the rear side part. Applied. As a result, a force that causes the seat plate to return to the initial posture state (for example, a substantially horizontal state) acts on the entire seat plate.
[0015] そして、座板ひいては着座者の前傾姿勢を保持しょうとすれば、座板を復帰させる 第 1及び第 2の制御部から加えられる力に対抗すベぐ脊柱の伸展を維持し、且つ、 抗重力筋をはじめとする身体の多くの筋群を同時に且つ適度に緊張させ続けなけれ ばならない。よって、着座者が、そのような前傾姿勢を保持するように本発明の着座 機構に座するだけで、脊柱が前屈みになったり腰掛けた姿勢が崩れたりせず、しかも 身体に備わる筋群の脆弱化が複合的に且つ有効に防止される。  [0015] And if the seat plate and thus the seated person's forward leaning posture is maintained, the extension of the spinal column is maintained against the force applied from the first and second control units for returning the seat plate, In addition, many muscle groups of the body, including anti-gravity muscles, must continue to be strained simultaneously and appropriately. Therefore, the seated person can sit in the seating mechanism of the present invention so as to maintain such a forward tilted posture, and the posture of the spine cannot bend forward or sit down, and the muscle groups of the body can be maintained. Vulnerability is prevented in a complex and effective manner.
[0016] また、第 1の制御部は、座板を鉛直上向きに予め付勢するように設けられたもので あり、第 2の制御部は、座板を鉛直下向きに予め付勢するように設けられたものであ ると好適である。  [0016] The first control unit is provided so as to pre-urge the seat plate vertically upward, and the second control unit pre-bias the seat plate vertically downward. It is preferable that it is provided.
[0017] この場合、座板の前方側及び後方側の部位には、着座前の初期状態において既 に、それぞれ 直上向きの力及ひずロ、直下向きの力が印加されている状態なので、着 座者が座したときに、座板及び着座者の前傾姿勢を維持するのに必要な筋力すな わち筋群に対する負荷が増大される。よって、上述したような種々の筋群がより鍛鍊 される。  [0017] In this case, in the initial state before the seating, the upward and downward force and the downward force are applied to the front and rear portions of the seat plate, respectively. When the occupant sits, the load on the seat plate and the muscles required to maintain the occupant's forward leaning posture, ie the muscle group, is increased. Therefore, various muscle groups as described above are further trained.
[0018] 逆に言えば、筋群に対する負荷として、座板が予め付勢されていない場合と同程 度の負荷を得る際に、座板の変位を低減することが可能となる。よって、座板及び第 1及び第 2の制御部の動作が軽減されるので、耐久性が向上される。 In other words, the displacement of the seat plate can be reduced when obtaining the same load as the case where the seat plate is not biased in advance as the load on the muscle group. Therefore, the seat plate and the second Since the operations of the first and second control units are reduced, durability is improved.
[0019] さらに、座板が、着座方向において支持部よりも前方、より好ましくは前方端部に設 けられた凸状部を有すると更に好適である。なお、凸状部は明確に'凸状'を成すも のだけでなぐ座板からやや盛り上がつたような形状のものをも含み、着座者の大腿 部の裏側と当接する際に痛感を伴わなレ、ものが好ましい。 [0019] Further, it is further preferable that the seat plate has a convex portion provided in front of the support portion in the seating direction, more preferably in the front end portion. Note that the convex part includes a shape that is slightly raised from the seat plate that is clearly 'convex', and feels painful when contacting the back side of the thigh of the seated person. An accompaniment is preferable.
[0020] こうすれば、着座者の大腿部が、その凸状部に当接して支えられるので、上述のよ うに踵を床面につけるように大腿骨を動力 て膝間接を下げると、凸状部が鉛直下向 きの力の'作用点'となって座板の前方側が押し下げられる。また、凸状部が大腿骨 の動作の'支点'となり、てこの原理によって股関節が上方に移動する。これらの動き により、股関節が伸展され、下腿の伸筋群 ·屈筋群を適度に緊張させ易くなる。 [0020] In this way, the thigh of the seated person is supported by being in contact with the convex portion, and as described above, if the knee indirect is lowered by driving the femur so that the heel is attached to the floor surface, The convex part becomes the 'action point' of vertically downward force, and the front side of the seat plate is pushed down. Also, the convex portion becomes the “fulcrum” of the femoral movement, and the hip joint moves upward by the lever principle. These movements extend the hip joints, making it easier to moderately tension the extensor and flexor muscles of the lower leg.
[0021] さらに、凸状部に力を集中させることができるので、着座者の筋の緊張に起因して 発現される力が座板の広範囲に発散してしまうことが抑えられ、座板の前方側の部位 を押し下げ易くなる。 [0021] Further, since the force can be concentrated on the convex portion, the force expressed due to the muscle tension of the seated person can be prevented from spreading over a wide area of the seat plate, It becomes easier to push down the front part.
[0022] さらにまた、支持部が、座板の幅方向に亘つて延在するように設けられたものである と、支持部によって座板の前後方向ひいては着座方向を画定し易くなると共に、座板 を挟んでその前後に二つの制御部(第 1及び第 2の制御部)を効果的に配置させ易く なるので、一層好ましい。  [0022] Furthermore, when the support portion is provided so as to extend in the width direction of the seat plate, the support portion facilitates demarcation of the seat plate in the front-rear direction and thus the seating direction. Since it becomes easy to arrange | position two control parts (1st and 2nd control part) effectively before and behind the board, it is still more preferable.
[0023] さらに、着座方向において第 2の制御部よりも縁端側の保持部上に突設された止定 部を備えるとより好適である。  [0023] Furthermore, it is more preferable to provide a stopping portion projecting on the holding portion on the edge side of the second control portion in the seating direction.
[0024] このようにすれば、着座者が腰掛けた当初に、着座方向において支持部よりも後方 に重心線が垂下するような状態となって座板が後方に傾動しても、止定部と座板が 干渉するので、過度の後傾が防止される。また、これにより、座板の前傾のみが可能 となるば力 でなぐ着座者の体勢が後傾して不安定になってしまうことも抑止され、 着座者が前傾姿勢へ移行し易くなる。  In this way, when the seated person sits down, even if the seat plate tilts backward in a state where the center of gravity line hangs behind the support part in the seating direction, And the seating plate interfere with each other, preventing excessive back tilt. In addition, if the seat plate can only be tilted forward, it is possible to prevent the seated posture of the seated person from tilting backward and becoming unstable, and the seated person can easily shift to the forward tilted posture. .
[0025] 更に具体的には、二つの制御部が、弾性体、及び/又は、シリンダ装置であるもの が挙げられる。ここで、弾性体としては、例えば各種ばね、ゴム、等が挙げられ、シリン ダ装置としては、例えば、筒状の気圧又は油圧シリンダ若しくはダンパ等が挙げられ る。 [0026] カロえて、支持部は、着座方向における位置が調節可能に設けられたものであると一 層好適である。これにより、着座者の体型等に応じて、着座状態における重心位置と 、 '支点'として機能する支持部との相対的な配置関係を任意に調節することが可能 となる。 [0025] More specifically, the two control units may be elastic bodies and / or cylinder devices. Here, examples of the elastic body include various springs and rubbers, and examples of the cylinder device include a cylindrical air pressure, a hydraulic cylinder, a damper, and the like. [0026] It is preferable that the support portion is provided so that its position in the seating direction can be adjusted. This makes it possible to arbitrarily adjust the relative positional relationship between the position of the center of gravity in the seated state and the support portion functioning as the “fulcrum” according to the body shape of the seated person.
[0027] また、本発明による椅子は、本発明の着座機構を備えて有効に機能するものであり 、上述した本発明による着座機構と、それが設置された脚体とを備える。  [0027] A chair according to the present invention functions effectively with the seating mechanism of the present invention, and includes the above-described seating mechanism of the present invention and a leg on which the seating mechanism is installed.
発明を実施するための最良の形態  BEST MODE FOR CARRYING OUT THE INVENTION
[0028] 以下、本発明の実施形態について詳細に説明する。なお、同一要素には同一の符 号を付し、重複する説明を省略する。また、上下左右等の位置関係は、特に断らない 限り、図面に示す位置関係に基づくものとする。さらに、図面の寸法比率は、図示の 比率に限定されるものではなレ、。 [0028] Hereinafter, embodiments of the present invention will be described in detail. In addition, the same code | symbol is attached | subjected to the same element and the overlapping description is abbreviate | omitted. In addition, the positional relationship such as up, down, left and right is based on the positional relationship shown in the drawings unless otherwise specified. Furthermore, the dimensional ratios in the drawings are not limited to the illustrated ratios.
[0029] 図 1は、本発明による着座機構及びそれを備える椅子の好適な一実施形態を模式 的に示す斜視図である。また、図 2及び図 3は、それぞれ、図 1に示す着座機構及び 椅子の正面図及び背面図である。さらに、図 4は、図 1に示す IV— IV線に沿う断面図 である。 FIG. 1 is a perspective view schematically showing a preferred embodiment of a seating mechanism according to the present invention and a chair including the seating mechanism. 2 and 3 are a front view and a rear view of the seating mechanism and the chair shown in FIG. 1, respectively. FIG. 4 is a cross-sectional view taken along the line IV-IV shown in FIG.
[0030] 椅子 10は、着座具 1 (着座機構)が脚体 2上に設置されたものである。着座具 1は、 主として略矩形を成す板状部材で形成された座板 11と略同形状の板状部材で形成 された底板 12 (保持部)とを備えている。座板 11と底板 12との間には、底板 12の幅 方向に亘つて延在するように、断面略台形状を成す支持部 13が介設されている。支 持部 13の上端には、座板 11の底壁面が当接している。  [0030] The chair 10 is one in which a sitting tool 1 (sitting mechanism) is installed on a leg 2. The seating tool 1 includes a seat plate 11 mainly formed of a substantially rectangular plate-like member and a bottom plate 12 (holding portion) formed of a substantially identical plate-like member. A support portion 13 having a substantially trapezoidal cross section is interposed between the seat plate 11 and the bottom plate 12 so as to extend in the width direction of the bottom plate 12. The bottom wall surface of the seat plate 11 is in contact with the upper end of the support portion 13.
[0031] この支持部 13は、着座方向(図示において支持部 13と水平に直交する方向)にお ける前後位置が任意に調節可能に設けられている。その機構としては、例えば、底 板 12上に設けられた既知のギア歯車式の移動レール(図示せず)や、支持部 13が 嵌め込まれるように底板 12上に複数形成された嵌合溝(図示せず)等が挙げられる。  [0031] The support portion 13 is provided such that a front-rear position in a seating direction (a direction perpendicular to the support portion 13 in the drawing) can be arbitrarily adjusted. As the mechanism, for example, a known gear-gear-type moving rail (not shown) provided on the bottom plate 12 or a plurality of fitting grooves formed on the bottom plate 12 so that the support portion 13 is fitted ( (Not shown).
[0032] また、着座方向において支持部 13よりも前方の底板 12の端部(前端部)上には、 複数の卷きばね 14 (全体として第 1の制御部)力 底板 12の縁に沿って固設されて いる。これらの卷きばね 14は、座板 11が静置された状態において、圧縮された状態 で座板 11の底壁面と当接している。なお、卷きばね 14の上方端は、座板 11の底壁 面に固定されていてもいなくてもよい。 [0032] In addition, on the end portion (front end portion) of the bottom plate 12 in front of the support portion 13 in the seating direction, a plurality of springs 14 (first control portion as a whole) force along the edge of the bottom plate 12 It is fixed. These springs 14 are in contact with the bottom wall surface of the seat plate 11 in a compressed state when the seat plate 11 is stationary. The upper end of the spring spring 14 is the bottom wall of the seat plate 11 It may or may not be fixed to the surface.
[0033] さらに、着座方向において支持部 13よりも後方の底板 12の端部(後端部)上には、 複数の卷きばね 15 (全体として第 2の制御部)力 底板 12の縁に沿って固設されて いる。これらの卷きばね 15は、座板 11が静置された状態において、拡張された状態 で座板 11の底壁面に固定されている。  [0033] Further, on the end portion (rear end portion) of the bottom plate 12 behind the support portion 13 in the seating direction, a plurality of piercing springs 15 (second control portion as a whole) force on the edge of the bottom plate 12 It is fixed along. These springs 15 are fixed to the bottom wall surface of the seat plate 11 in an expanded state when the seat plate 11 is stationary.
[0034] またさらに、卷きばね 15よりも更に後方の底板 12の縁部上には、底板 12の幅方向 に亘つて延在するように、断面略台形状を成す止定部 17が介設されている。この止 定部 17は、高さが支持部 13よりも低くされており、支持部 13上に座板 11が静置され た状態において、座板 11は止定部 17から一定の間隔を有して配置される。  [0034] Further, a fixing portion 17 having a substantially trapezoidal cross section is provided on the edge of the bottom plate 12 further rearward than the spring spring 15 so as to extend in the width direction of the bottom plate 12. It is installed. The fixing portion 17 has a height lower than that of the support portion 13, and the seat plate 11 has a certain distance from the fixing portion 17 when the seat plate 11 is placed on the support portion 13. Arranged.
[0035] さらにまた、着座方向における座板 11の前方端部(より具体的には複数の卷きばね 14が設けられている位置)の上面には、緩やかに盛り上がった断面略台形状を成す 凸状部 16が、底板 12の幅方向に亘つて延在するように突設されている。  [0035] Furthermore, the upper surface of the front end portion of the seat plate 11 in the seating direction (more specifically, the position where the plurality of springs 14 are provided) has a substantially trapezoidal cross-section that gently rises. The convex part 16 is provided so as to extend in the width direction of the bottom plate 12.
[0036] また、脚体 2は、底板 12の底壁面の略中央部に固定された脚受具 21と、周方向に 回動可能にその脚受具 21に上方端が接続された伸縮ロッド 23と、その伸縮ロッド 23 の他方端が接続された油圧シリンダ 24とを備えている。伸縮ロッド 23の周壁には、例 えば上下方向に枢動可能な座高調節レバー 22が設けられており、それを動かすこと で油圧シリンダ 24が駆動され、伸縮ロッド 23が伸縮するようになっている。また、油圧 シリンダ 24は、複数の脚 25を有する脚座に固定されている。  [0036] Further, the leg body 2 includes a leg holder 21 fixed to a substantially central portion of the bottom wall surface of the bottom plate 12, and a telescopic rod having an upper end connected to the leg holder 21 so as to be rotatable in the circumferential direction. 23 and a hydraulic cylinder 24 to which the other end of the telescopic rod 23 is connected. For example, a seat height adjustment lever 22 that can be pivoted in the vertical direction is provided on the peripheral wall of the telescopic rod 23, and the hydraulic cylinder 24 is driven by moving the lever 22 so that the telescopic rod 23 expands and contracts. . The hydraulic cylinder 24 is fixed to a leg seat having a plurality of legs 25.
[0037] このように構成された着座具 1及びそれを備える椅子の作用について、さらに図 5を 参照して以下詳説する。図 5は、本発明による着座機構及びそれを備える椅子の好 適な他の一実施形態に人が腰掛けた状態を模式的に示す側面図である。椅子 30は 、着座具 1の座板 11上面に適宜のクッション材 3が付設されたこと以外は、椅子 10と 同様に構成されたものである。  [0037] The operation of the sitting tool 1 configured as described above and the chair including the sitting tool 1 will be described in detail below with reference to FIG. FIG. 5 is a side view schematically showing a state where a person is seated on another preferred embodiment of the seating mechanism and the chair including the same according to the present invention. The chair 30 is configured in the same manner as the chair 10 except that an appropriate cushion material 3 is attached to the upper surface of the seat plate 11 of the sitting tool 1.
[0038] 椅子 30に座る際には、まず、着座者 Hの身長に合うように、座高調節レバー 22を 操作して油圧シリンダ 24によって伸縮ロッド 23の長さを調節する。具体的には、椅子 30の前に起立し、座板 11の鉛直方向レベルが膝窩 (膝の裏の皺がある部位)よりも 例えば 3— 10cm程度高くなるように伸縮ロッド 23の長さを調節すると好ましい。また 、後述するように、着座して座板 11が略水平状態にあるときに、つま先(MP関節)が 床面に接するように、座板 11の高さを設定することが望ましレ、。 When sitting on the chair 30, first, the seat height adjustment lever 22 is operated to adjust the length of the telescopic rod 23 by the hydraulic cylinder 24 so as to match the height of the seated person H. Specifically, the length of the telescopic rod 23 stands up in front of the chair 30 so that the vertical level of the seat plate 11 is, for example, about 3-10 cm higher than the popliteal (the part with the heel behind the knee). Is preferable. Further, as will be described later, when the seat plate 11 is in a substantially horizontal state after sitting down, the toe (MP joint) It is desirable to set the height of the seat 11 so that it touches the floor.
[0039] さらに、座板 11の傾動の'支点'として機能する支持部 13の前後位置を適宜調節 する。具体的には、着座者の大転子 (大腿骨最上端部)の近傍に支持部 13が位置 するように支持部 13の位置を調節すると好ましレ、。  Furthermore, the front-rear position of the support portion 13 that functions as a “fulcrum” for tilting the seat plate 11 is adjusted as appropriate. Specifically, it is preferable to adjust the position of the support portion 13 so that the support portion 13 is positioned in the vicinity of the greater trochanter (the uppermost end of the femur) of the seated person.
[0040] この状態で着座すると、通常、着座者 Hの重心線が支持部 13よりも後方に垂下す る場合、座板 11は後方に傾動するものの、座板 11の後端部が止定部 17と干渉する 。これにより、着座者 Hが腰掛けた際、座板 11は止定部 17で支えられて座面すなわ ち着座者 Hの大腿骨が略水平に保たれ、つま先 (MP関節)が床面に接する。この体 勢は、骨盤がやや後傾しており比較的安楽な着座状態である。  [0040] When seated in this state, normally, when the center of gravity line of the seated person H hangs backward from the support portion 13, the seat plate 11 tilts backward, but the rear end portion of the seat plate 11 stops. Interfering with part 17. As a result, when the seated person H sits down, the seat plate 11 is supported by the fixing part 17 so that the seat plate 11 is seated, that is, the femur of the seated person H is kept substantially horizontal, and the toes (MP joints) are on the floor surface. Touch. This posture is a relatively comfortable seating state with the pelvis tilted slightly backward.
[0041] また、この体勢では、通常、大腿骨の遠位端から大腿骨全長の約三分の一の部位 が凸状部 16と当接する。そして、この状態から、踵が床面につくように大腿骨を動か すと、大腿骨遠位端に位置する膝関節が下がり、凸状部 16が鉛直下向きの力の'作 用点'となって座板 11の前方端が押し下げられる。同時に、凸状部 16が大腿骨の動 作の'支点'となり、大腿骨近位端に位置する股関節が上方に移動する。これらの動 きにより、股関節が解剖学的に伸展される。  [0041] Further, in this posture, generally, about one third of the total length of the femur from the distal end of the femur contacts the convex portion 16. From this state, when the femur is moved so that the heel touches the floor surface, the knee joint located at the distal end of the femur is lowered, and the convex part 16 becomes the 'working point' of the vertically downward force. The front end of the seat plate 11 is pushed down. At the same time, the convex portion 16 becomes a “fulcrum” for the operation of the femur, and the hip joint located at the proximal end of the femur moves upward. These movements stretch the hip joint anatomically.
[0042] また、その股関節の伸展により、下腿の伸筋群 ·屈筋群が適度に緊張すると共に、 股関節における大殿筋及びハムストリングス筋の収縮等が生じる。さらに、関節を固 定するために、屈筋群の一つである昜腰筋等も収縮する。  [0042] Further, the extension of the hip joint causes the extensor and flexor muscles of the lower leg to be moderately tensioned and the contraction of the gluteal and hamstring muscles in the hip joint. Furthermore, in order to fix the joints, the gluteal muscles, one of the flexor muscles, also contract.
[0043] このようにして座板 11が前傾すると、着座者 Hの重心が前方に移動し、骨盤は、座 板 11が略水平状態にあった当初よりも前傾すると共に、脊柱が伸びて着座者 Hはや や前傾姿勢で着座した状態となる。なお、着座者 Hが椅子 10へ座ることに慣れてく れば、着座した初期状態から、このような前傾姿勢をとることができる。  [0043] When the seat plate 11 tilts forward in this way, the center of gravity of the seated person H moves forward, and the pelvis tilts forward from the beginning when the seat plate 11 is in a substantially horizontal state, and the spine extends. The seated person H is seated in a slightly leaning posture. If seated person H gets used to sitting on chair 10, he can take such a forward leaning posture from the initial state of sitting.
[0044] ここで、座板 11が前傾した状態では、座板 11の前方端部の下方に設けられた卷き ばね 14は、着座者 Hの荷重による圧縮に反発するように鉛直上向きの力を座板 11 の前方端部に印加する。これにより、座板 11は水平状態に復帰するように、ただし、 着座者 Hの荷重と卷きばね 14の反発力との均衡がとれる位置まで押し上げられる。  [0044] Here, when the seat plate 11 is tilted forward, the spring 14 provided below the front end of the seat plate 11 is vertically upward so as to repel compression caused by the load of the seated person H. A force is applied to the front edge of the seat plate 11. As a result, the seat plate 11 is returned to the horizontal state, but is pushed up to a position where the load of the seated person H and the repulsive force of the spring 14 can be balanced.
[0045] それに加えて、座板 11が前傾した状態では、座板 11の後方端部の下方に設けら れた卷きばね 15は、座板 11が引き上げられるのに伴って引き伸ばされ、その引っ張 りに抵抗するように鉛直下向きの力を座板 11の後方端部に印加する。そうすると、支 持部 13がてこの'支点'として機能するので、座板 11の前方端部が更に引き上げら れる。よって、座板 11は、卷きばね 14の反発力のみによるよりも、水平状態により一 層復帰するように動作する。 [0045] In addition, when the seat plate 11 is tilted forward, the spring 15 provided below the rear end of the seat plate 11 is stretched as the seat plate 11 is pulled up, That pull A vertical downward force is applied to the rear end of the seat plate 11 so as to resist it. Then, since the support part 13 functions as a lever “fulcrum”, the front end part of the seat plate 11 is further lifted. Therefore, the seat plate 11 operates so as to return one layer in the horizontal state rather than only by the repulsive force of the spring spring 14.
[0046] したがって、卷きばね 14の反発力だけでは、着座者 Hが自身の荷重によってある 程度前傾姿勢を維持し得ることができたとしても、卷きばね 15の引張力によって座板 11の前方端部が更に押し上げられる(図示矢印 Y参照)ので、着座者 Hは、その前 傾姿勢を保持するために必要な筋肉を一層緊張させる必要がある。  Therefore, even if the seated person H can maintain the forward tilting posture to some extent by its own load only by the repulsive force of the spring spring 14, the seat plate 11 can be pulled by the tensile force of the spring spring 15. Since the front end of the seat is further pushed up (see arrow Y in the figure), the seated person H needs to further tighten the muscles necessary to maintain the forward leaning posture.
[0047] すなわち、卷きばね 14の反発力と卷きばね 15による引張力とによって、座板 11が 水平方向に強力に復元されるような動作が生じるので、下肢共々全身の筋を弛緩さ せてしまうと、座板 11が簡易に初期の水平状態に復することとなる。こうなると、骨盤 が後傾して当初の安楽な着座状態となってしまう。  [0047] That is, the repulsive force of the heel spring 14 and the tensile force of the heel spring 15 cause the seat plate 11 to be strongly restored in the horizontal direction. If this happens, the seat plate 11 can be easily restored to the initial horizontal state. When this happens, the pelvis is tilted backwards and the original comfortable seating state occurs.
[0048] よって、座板 11の前傾ひいては着座者 Hの上述した前傾姿勢を保持するためには 、下腿の伸筋及び屈筋群(下腿三頭筋)の筋緊張を適度に且つ継続的又は断続的 に持続させる必要がある。逆にこのような筋緊張を維持すれば、筋力の脆弱化を防 止できると共に、筋ポンプ作用によって静脈血'リンパの還流が促され、下腿の浮腫 を防止したり足首を引き締めたりするといつた効果が得られる。  [0048] Therefore, in order to maintain the anteversion posture of the seat plate 11 and the above-described forward tilt posture of the seated person H, the muscle tension of the extensors of the lower leg and the flexor muscles (triceps surae) is moderately and continuously maintained. Or it needs to be sustained intermittently. On the other hand, if such muscle tone is maintained, the weakness of the muscular strength can be prevented and the return of the venous blood 'lymph is promoted by the muscle pump action, preventing edema of the lower leg and tightening the ankle. An effect is obtained.
[0049] また、座板 11及び着座者 Hの前傾姿勢を保持するためには、股関節が内旋'外旋 中間位で凸状部に接し易くなるので、特に、股関節の大腿筋膜張筋をはじめとする 内旋筋群、及び梨状筋をはじめとする外旋筋群、並びに、股関節の伸筋及び屈筋を も適度に緊張させる必要がある。逆にこのような筋緊張を持続すれば、それらの筋力 の発達を促進でき、その結果、股関節に生じ得る障害を有効に予防することができる  [0049] Further, in order to maintain the forward tilting posture of the seat plate 11 and the seated person H, the hip joint is easy to come into contact with the convex portion at the intermediate position and the external rotation position. The internal rotator muscle group including the muscles, the external rotator muscle group including the piriform muscle, and the extensor and flexor muscles of the hip joint need to be moderately tensioned. Conversely, if such muscle tone is sustained, the development of their strength can be promoted, and as a result, the damage that can occur in the hip joint can be effectively prevented.
[0050] さらに、座板 11及び着座者 Hの前傾姿勢を保持することにより、大腿骨及び脛骨が 、人が本来的に有する生理的に適正な状態(生理的ライン)に復するようになるので、 膝の外反 (X脚)や内反(o脚)を矯正するとレ、う効果も奏される。 [0050] Further, by maintaining the forward tilting posture of the seat plate 11 and the seated person H, the femur and tibia are restored to the physiologically proper state (physiological line) inherently possessed by the person. Therefore, correcting knee valgus (X leg) and club valgus (o leg) can also produce a heel effect.
[0051] またさらに、座板 11及び着座者 Hの前傾姿勢を保持するためには、股関節を伸展 する筋であり且つ坐骨結節に起始するハムストリングス筋 (大腿二頭筋、半健半膜様 筋)の緊張を適度に且つ継続的又は断続的に持続させる必要がある。逆にこのような 筋緊張を維持すれば、股関節の屈筋である大腿四頭筋の適度な緊張も引き起こされ る。これにより、大腿の筋萎縮を抑止することができ、もって大腿の抗重力筋の筋力 低下を防止することが可能となる。 [0051] Furthermore, in order to maintain the forward tilting posture of the seat plate 11 and the seated person H, the hamstring muscle (the biceps femoris muscle, the semi-healthy half-arm) is a muscle that extends the hip joint and starts at the sciatic nodule Membrane It is necessary to maintain the (muscle) tension moderately and continuously or intermittently. On the other hand, maintaining such muscle tension also causes moderate tension in the quadriceps, the flexor of the hip joint. Thereby, muscle atrophy of the thigh can be suppressed, and thus it is possible to prevent a decrease in muscle strength of the anti-gravity muscle of the thigh.
[0052] さらにまた、椅子 30に腰掛けた状態で座板 11及び着座者 Hの前傾姿勢を保持す ることにより、足を組むことや他の不自然な下肢の肢位をとることが困難となるので、 身体の歪みを予防でき、また、身体に生じている歪みを矯正することもできる。  [0052] Furthermore, it is difficult to cross the legs and to take other unnatural leg positions by holding the seat 11 and the seated person H leaning forward while sitting on the chair 30. Therefore, the body distortion can be prevented, and the distortion occurring in the body can be corrected.
[0053] また、座板 11及び着座者 Hの前傾姿勢を保持すれば、骨盤において、股関節伸 筋群の大殿筋、外転に関与する中殿筋、内旋及び外転に関与する小殿筋の適度な 筋緊張も継続的又は断続的に維持される。こうすれば、これらの筋の萎縮が抑制さ れ、筋力の脆弱化を防止できる。そればかりか、美容的観点に立てばいわゆるヒップ アップの効果が奏される。しかも、大殿筋、中殿筋、及び小殿筋の緊張のみならず、 骨盤底筋の緊張をも生じるので、着座者 Hが痔ろうや痔核等を患っていても、それら が座板 11の座面から直接圧迫されることを回避できる。  [0053] Further, if the seat plate 11 and the seated person H maintain the forward tilted posture, the gluteal muscles of the hip extensor muscle group, the gluteus medius muscles involved in abduction, and the minors involved in internal rotation and abduction in the pelvis Appropriate muscle tone of the gluteus is also maintained continuously or intermittently. In this way, the atrophy of these muscles is suppressed, and weakening of the muscular strength can be prevented. In addition, from a cosmetic point of view, the so-called hip-up effect is achieved. Moreover, not only the tension of the gluteus medius, the gluteus medius, and the gluteus medius, but also the pelvic floor muscles, even if the seated person H suffers from hemorrhoids, hemorrhoids, etc. Direct pressure from the seat can be avoided.
[0054] さらに、座板 11及び着座者 Hの前傾姿勢を保持しょうとすると、体幹後部の起立筋 群、体幹前部の腹筋群、及び、脊柱から小転子に走行する腸腰筋群の互いに協調 した筋緊張によって腸骨がやや前傾に保たれ、脊柱が自然な立位姿勢のように伸展 する。これらにより、抗重力筋のなかでも重要な筋の一つである腸腰筋の筋力低下を 防止することができる。その結果、腰椎の後彎、前彎、側彎等に起因する腰痛の予防 が可能となる。また、壮年期及び老年期においては、このような抗重力筋の脆弱化を 予防することにより、寝たきり症状の発生を有効に抑止することが可能となる。  [0054] Further, when trying to maintain the anteversion posture of the seat plate 11 and the seated person H, the standing muscle group in the rear trunk, the abdominal muscle group in the front trunk, and the intestinal waist running from the spinal column to the lesser trochanter The muscular group's coordinated muscle tension keeps the iliac slightly forward and the vertebral column extends like a natural standing posture. As a result, it is possible to prevent the muscular weakness of the iliopsoas muscle, which is one of the important muscles among the antigravity muscles. As a result, it is possible to prevent back pain caused by lumbar kyphosis, forehead, scoliosis, and the like. In the middle and old age, it is possible to effectively prevent bedridden symptoms by preventing such weakening of anti-gravity muscles.
[0055] また、このように脊柱の生理的に適正な状態(生理的ライン)が生成されると、胸部 において猫背を予防し且つ呼吸運動を楽にするような作用が生じる。加えて、 不自然な肩の緊張や頸部の前屈'後屈が抑制されるので、肩こりや頸のこりを予防す ること力 Sできる。さらに、生理的ラインが形成される姿勢は、眼の無駄な近点調節を防 止でき、これにより、仮性近視や眼精疲労の予防に資することができる。またさらに、 美容的な観点からは、バストアップの効果が得られる。  [0055] In addition, when a physiologically appropriate state (physiological line) of the spinal column is generated in this way, an action that prevents the dorsum of the spine and facilitates breathing exercises occurs in the chest. In addition, since unnatural shoulder tension and neck bend and back bend are suppressed, the ability to prevent stiff shoulders and neck stiffness can be achieved. Furthermore, the posture in which the physiological line is formed can prevent unnecessary near-point adjustment of the eye, thereby contributing to prevention of pseudomyopia and eye strain. Furthermore, from a cosmetic point of view, a bust-up effect can be obtained.
[0056] さらにまた、腹筋の適度な緊張は、筋力低下に伴う内臓下垂等の障害の発生の予 防にも寄与することができる。さらに、美容的観点からすれば、ウェストを引き締める 効果も得られる。 [0056] Furthermore, moderate abdominal muscle tension is a predictor of the occurrence of disorders such as visceral sag due to muscle weakness. It can also contribute to prevention. In addition, from the cosmetic point of view, the effect of tightening the waist can be obtained.
[0057] よって、着座具 1及びそれを備える椅子 10, 30によれば、以上説明したような種々 の効果を複合的に奏することができるので、身体に生じ得る様々な歪みや種々の障 害を、従来よりも効果的且つ総合的に、しかも簡便に予防及び矯正することが可能と なる。  [0057] Therefore, according to the sitting tool 1 and the chairs 10 and 30 provided with the sitting tool 1, the various effects as described above can be produced in combination, so that various distortions and various obstacles that can occur in the body can be achieved. Can be prevented and corrected more effectively, comprehensively and simply than before.
[0058] また、卷きばね 14が、座板 11が静置された状態において、圧縮された状態で座板 11の底壁面と当接しているので、座板 11の前方側の部位が鉛直上向きに予め付勢 されている。よって、座板 11が略水平状態へ一層復するようになるので、着座者 Hが 前傾姿勢を維持するのに必要な筋群に対する負荷が増大され、その結果、上述した 種々の効果が高められる。  [0058] Further, since the spring 14 is in contact with the bottom wall surface of the seat plate 11 in a compressed state when the seat plate 11 is stationary, the front side portion of the seat plate 11 is vertically Pre-biased upward. Accordingly, the seat plate 11 is further restored to a substantially horizontal state, so that the load on the muscle group necessary for the seated person H to maintain the forward leaning posture is increased, and as a result, the various effects described above are enhanced. It is done.
[0059] さらに、卷きばね 15が、座板 11が静置された状態において、拡張された状態で座 板 11の底壁面に固定されているので、座板 11の後方側の部位が鉛直下向きに予め 付勢されている。よって、座板 11が略水平状態へ更に一層復するようになるので、着 座者 Hが前傾姿勢を維持するのに必要な筋群に対する負荷が更に増大され、その 結果、上述した種々の効果がより一層高められる。  [0059] Further, since the spring 15 is fixed to the bottom wall surface of the seat plate 11 in an expanded state in a state where the seat plate 11 is stationary, the rear side portion of the seat plate 11 is vertical. Pre-biased downward. As a result, the seat plate 11 is further restored to the substantially horizontal state, so that the load on the muscle group necessary for the seated person H to maintain the forward leaning posture is further increased. The effect is further enhanced.
[0060] また、卷きばね 14, 15がこのように座板 11を予め付勢するように設けられているの で、座板 11がそのように付勢されてレ、なレ、場合に比して少なレ、変位で着座者 Hに対 して同等の筋力負荷を与えることができる。よって、座板 11及び卷きばね 14, 15の 動作が軽減されるので、繰り返し使用したときの耐久性を向上できる。  [0060] Further, since the springs 14 and 15 are provided in such a manner as to urge the seat plate 11 in advance, the seat plate 11 is urged in such a manner. Compared with the lesser displacement and displacement, the same muscular load can be applied to the seated person H. Therefore, the operations of the seat plate 11 and the springs 14 and 15 are reduced, so that the durability when repeatedly used can be improved.
[0061] なお、本発明は上述した実施形態に限定されるものではなぐその要旨を変更しな い限度において様々な変形が可能である。例えば、卷きばね 14, 15に替えて他の ばね、ゴム等の弾性体を用いてもよぐ或いは、筒状の気圧又は油圧シリンダ若しく はダンバ等のシリンダ装置を用いてもよレ、。さらに、卷きばね 14, 15及びその他の第 1の制御部及び第 2の制御部は、例えば連結されて一体に形成されていてもよい。ま たさらに、卷きばね 14, 15の員数及び配置も図示に限定されず、複数のものをュニ ット化してもよぐ更に予め座板 11を付勢していなくても構わない。 Note that the present invention is not limited to the above-described embodiment, and various modifications can be made without changing the gist thereof. For example, instead of the springs 14 and 15, other springs, rubber or other elastic bodies may be used, or a cylindrical air pressure or hydraulic cylinder or a cylinder device such as a damper may be used. . Further, the spring springs 14 and 15 and the other first control unit and second control unit may be connected and formed integrally, for example. Furthermore, the number and arrangement of the spring springs 14 and 15 are not limited to those shown in the figure, and a plurality of springs may be united, and the seat plate 11 may not be biased in advance.
[0062] さらにまた、卷きばね 14, 15のばね定数、すなわちこれらが発現する抗カは、着座 者 Hの体重、体型、筋力等に応じて適宜調節することができる。特に、後方側に配置 された卷きばね 15を調節できるようにすると好ましい。この場合、卷きばね 14, 15を 底板 12及び/又は座板 11に対して着脱自在に設けると交換が容易となり保守性が 向上される。また、底板 12を設けずに、卷きばね 14, 15の一方端を脚体 2に固定し てもよレ、。この場合、脚体 2が保持体として機能する。こうすれば、部材点数を低減で きると共に、保守性を一層向上させることができる。 [0062] Furthermore, the spring constants of the springs 14 and 15, that is, the resistance to which they are expressed are It can be appropriately adjusted according to the weight, body shape, muscle strength, etc. of the person H. In particular, it is preferable that the spring 15 disposed on the rear side can be adjusted. In this case, if the spring springs 14 and 15 are provided detachably with respect to the bottom plate 12 and / or the seat plate 11, the replacement becomes easy and the maintainability is improved. It is also possible to fix one end of the springs 14 and 15 to the leg 2 without providing the bottom plate 12. In this case, the leg 2 functions as a holding body. In this way, the number of members can be reduced and the maintainability can be further improved.
[0063] さらに、背もたれ、手すり、肘掛等を設けてもよい。またさらに、凸状部 16は設けなく てもよいが、設けた方が好ましぐまた、一体に延在していなくいともよぐ例えば、左 右の大腿部のそれぞれが当接する位置に二分して設けてもよい。カロえて、座板 11を 円形として椅子 10, 30を円形椅子としても構わない。 [0063] Further, a backrest, a handrail, an armrest or the like may be provided. Furthermore, the convex portion 16 may not be provided, but it is preferable that the convex portion 16 is provided, and it does not have to extend integrally. May be provided. The seat plate 11 may be circular and the chairs 10 and 30 may be circular chairs.
産業上の利用可能性  Industrial applicability
[0064] 本発明による着座機構及びそれを備える椅子は、上述した支持部と二つの制御部 を備えることにより、身体に生じ得る様々な歪みや種々の障害を、従来よりも効果的 且つ総合的にしかも簡便に予防及び矯正することが可能なので、身体の治療及び 美容に広く利用することができる。 [0064] The seating mechanism and the chair including the seating mechanism according to the present invention are provided with the above-described support portion and the two control portions, so that various distortions and various obstacles that may occur in the body are more effective and comprehensive than before. Moreover, since it can be easily prevented and corrected, it can be widely used for body treatment and beauty.
図面の簡単な説明  Brief Description of Drawings
[0065] [図 1]本発明による着座機構及びそれを備える椅子の好適な一実施形態を模式的に 示す斜視図である。  FIG. 1 is a perspective view schematically showing a preferred embodiment of a seating mechanism and a chair including the same according to the present invention.
[図 2]図 1に示す着座機構及び椅子の正面図である。  FIG. 2 is a front view of the seating mechanism and chair shown in FIG.
[図 3]図 1に示す着座機構及び椅子の背面図である。  FIG. 3 is a rear view of the seating mechanism and chair shown in FIG. 1.
[図 4]図 1に示す IV— IV線に沿う断面図である。  4 is a cross-sectional view taken along line IV-IV shown in FIG.
[図 5]本発明による着座機構及びそれを備える椅子の好適な他の一実施形態に人が 腰掛けた状態を模式的に示す側面図である。  FIG. 5 is a side view schematically showing a state in which a person is seated on another preferred embodiment of a seating mechanism and a chair including the same according to the present invention.

Claims

請求の範囲 The scope of the claims
[1] 保持体に設けられた支持部と、 [1] a support provided on the holding body;
前記支持部を中心として略鉛直方向に遊動可能に設けられた座板と、 前記支持部を挟んで設けられており、前記座板に鉛直方向の力が作用したときに 該力に抗する力を該座板に印加する二つの制御部と、  A seat plate provided so as to be freely movable in a substantially vertical direction around the support portion; and a force that resists the force when a force in the vertical direction acts on the seat plate, with the support portion interposed therebetween. Two control units for applying to the seat plate,
を備える着座機構。  A seating mechanism comprising:
[2] 前記二つの制御部は、着座方向において前記支持部よりも前方に配された第 1の 制御部と、着座方向において前記支持部よりも後方に配された第 2の制御部と、から 成る、  [2] The two control units are a first control unit disposed forward of the support unit in the seating direction, and a second control unit disposed rearward of the support unit in the seating direction; Consisting of,
請求項 1記載の着座機構。  The seating mechanism according to claim 1.
[3] 前記第 1の制御部は、前記座板に鉛直上向きの抗カを印加するものであり、 [3] The first control unit applies a vertically upward resistance to the seat plate,
前記第 2の制御部は、前記座板に鉛直下向きの抗カを印加するものである、 請求項 2記載の着座機構。  3. The seating mechanism according to claim 2, wherein the second control unit applies a vertically downward resistance to the seat plate.
[4] 前記第 1の制御部は、前記座板を鉛直上向きに予め付勢するように設けられたもの であり、 [4] The first control unit is provided to urge the seat plate vertically upward in advance,
前記第 2の制御部は、前記座板を鉛直下向きに予め付勢するように設けられたもの である、  The second control unit is provided to urge the seat plate vertically downward in advance.
請求項 2又は 3に記載の着座機構。  The seating mechanism according to claim 2 or 3.
[5] 前記座板は、着座方向において前記支持部よりも前方に設けられた凸状部を有す る、 [5] The seat plate has a convex portion provided in front of the support portion in the seating direction.
請求項 1一 4のいずれか一項に記載の着座機構。  The seating mechanism according to any one of claims 1 to 4.
[6] 前記支持部は、前記座板の幅方向に亘つて延在するように設けられたものである、 請求項 1一 5のいずれか一項に記載の着座機構。 6. The seating mechanism according to any one of claims 1 to 5, wherein the support portion is provided so as to extend in a width direction of the seat plate.
[7] 前記着座方向において前記第 2の制御部よりも縁端側の前記保持部上に突設され た止定部を備える、 [7] A stopping portion provided on the holding portion on the edge side of the second control portion in the seating direction is provided.
請求項 2— 6のレ、ずれか一項に記載の着座機構。  The seating mechanism according to claim 2-6, wherein the gap is a deviation.
[8] 前記二つの制御部は、弾性体、及び/又は、シリンダ装置である、 [8] The two control units are an elastic body and / or a cylinder device.
請求項 1一 7のいずれか一項に記載の着座機構。 The seating mechanism according to any one of claims 1 to 7.
[9] 前記支持部は、前記着座方向における位置が調節可能に設けられたものである、 請求項 1一 8のいずれか一項に記載の着座機構。 [9] The seating mechanism according to any one of [1] to [8], wherein the support portion is provided such that a position in the seating direction is adjustable.
[10] 請求項 1一 9のいずれか一項に記載の着座機構と、 [10] The seating mechanism according to any one of claims 1 to 9, and
前記着座機構が設置された脚体と、  A leg on which the seating mechanism is installed;
を備える椅子。  A chair equipped with.
PCT/JP2004/012852 2004-09-03 2004-09-03 Seating mechanism and chair WO2006027822A1 (en)

Priority Applications (3)

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JP2006534935A JPWO2006027822A1 (en) 2004-09-03 2004-09-03 Seating mechanism and chair
PCT/JP2004/012852 WO2006027822A1 (en) 2004-09-03 2004-09-03 Seating mechanism and chair
US11/661,672 US20070252419A1 (en) 2004-09-03 2004-09-03 Seating Mechanism and Chair

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PCT/JP2004/012852 WO2006027822A1 (en) 2004-09-03 2004-09-03 Seating mechanism and chair

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WO2006027822A1 true WO2006027822A1 (en) 2006-03-16
WO2006027822A8 WO2006027822A8 (en) 2007-03-22

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US (1) US20070252419A1 (en)
JP (1) JPWO2006027822A1 (en)
WO (1) WO2006027822A1 (en)

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US20070252419A1 (en) 2007-11-01
JPWO2006027822A1 (en) 2008-05-08

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