JP6680508B2 - Low back pain chair - Google Patents
Low back pain chair Download PDFInfo
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- JP6680508B2 JP6680508B2 JP2015206806A JP2015206806A JP6680508B2 JP 6680508 B2 JP6680508 B2 JP 6680508B2 JP 2015206806 A JP2015206806 A JP 2015206806A JP 2015206806 A JP2015206806 A JP 2015206806A JP 6680508 B2 JP6680508 B2 JP 6680508B2
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- 208000008035 Back Pain Diseases 0.000 title description 7
- 208000008930 Low Back Pain Diseases 0.000 title description 3
- 230000000994 depressogenic effect Effects 0.000 claims description 8
- 210000001217 buttock Anatomy 0.000 claims description 6
- 210000000689 upper leg Anatomy 0.000 claims description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 2
- 238000004587 chromatography analysis Methods 0.000 claims 2
- 210000003205 muscle Anatomy 0.000 description 6
- 210000004197 pelvis Anatomy 0.000 description 6
- 208000002193 Pain Diseases 0.000 description 4
- 210000004705 lumbosacral region Anatomy 0.000 description 4
- 230000017531 blood circulation Effects 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 210000002414 leg Anatomy 0.000 description 3
- 206010023509 Kyphosis Diseases 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 210000003141 lower extremity Anatomy 0.000 description 2
- 206010039722 scoliosis Diseases 0.000 description 2
- 210000002517 zygapophyseal joint Anatomy 0.000 description 2
- 206010049565 Muscle fatigue Diseases 0.000 description 1
- 208000000112 Myalgia Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 210000001624 hip Anatomy 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 208000013465 muscle pain Diseases 0.000 description 1
- 230000003387 muscular Effects 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 230000009885 systemic effect Effects 0.000 description 1
Landscapes
- Chair Legs, Seat Parts, And Backrests (AREA)
- Chairs Characterized By Structure (AREA)
Description
本発明は，長時間座位にて発生する腰痛を防止することを目的とする椅子に関するものである． The present invention relates to a chair that aims to prevent back pain that occurs when sitting for a long time.
長時間のデスクワークを行う職種では腰痛を訴える人が多い．長時間座位にて引き起こされる腰痛の発症原因は，腰椎後弯持続による椎間板性疼痛や背筋性疼痛，臀部圧迫痛などが考えられる． There are many people who complain of low back pain in the occupations that perform desk work for a long time. The causes of low back pain caused by sitting for a long time are considered to be intervertebral disc pain, back muscle pain, and buttocks pressure pain due to the lumbar kyphosis.
腰椎後弯を減少させる目的で椅子の背もたれにパッドを入れたり，背もたれを倒したり，また膝で支える形態の椅子（バランスチェア）もある．臀部の長時間圧迫による臀部痛を軽減させるために，座面のクッションに低反発素材を用いたり大腿後面と臀部の形状に合わせた曲線を持つ座面にしている椅子もある．しかし，同一姿勢で背筋が不動状態に置かれることはたとえ負荷が少ない状況でも筋への血流が停滞し，乳酸の蓄積を招き鈍痛を引き起こす．さらに血流ではなく拡散によって栄養されている椎間関節と椎間板は，同一姿勢によりその拡散が不良となるため悪影響を受ける． There is also a chair (balance chair) in which the backrest of the chair is padded, the backrest is laid down, and the knee is supported to reduce lumbar kyphosis. In order to reduce the pain in the buttocks due to long-term pressure on the buttocks, some chairs use a low-resilience material for the cushion of the seat surface or have a seat surface with a curved line that matches the shapes of the posterior thigh and buttocks. However, immobilization of the back muscles in the same posture causes stagnation of blood flow to the muscles even when the load is small, which leads to accumulation of lactic acid and causes dull pain. Furthermore, the facet joint and the intervertebral disc, which are nourished by diffusion rather than blood flow, are adversely affected because the diffusion is poor due to the same posture.
背もたれが倒れたり，座面を変えることができる椅子は多くあり，それらの動きにより座る姿勢を変えることはできるが，デスクワークを行う姿勢は自ずと作業に適した背もたれの角度と座面の高さに限定されるため，頻繁に動かすことは現実的ではない．ロッキング機構付チェアや特許文献１のように座面板が前後方向等において傾斜角を変えることができる椅子は存在するが，同様である． There are many chairs with a backrest that can be tilted or the seating surface can be changed, and the sitting posture can be changed by their movements, but the posture for deskwork is naturally the angle of the backrest and the height of the seating surface that are suitable for work. Because it is limited, it is not realistic to move it frequently. There are chairs with a locking mechanism and chairs in which the seat plate can change the inclination angle in the front-back direction as in Patent Document 1, but the same is true.
特許文献２−４のような動揺椅子もしくはバランスボール等では不安定に座面が動きバランスをとるため常に背筋の緊張が必要となり筋疲労を引き起こす．非特許文献１のようにモーターにて他動的に座面を一定リズムにて傾動させる椅子も存在するが，自らの意思とは関係の無い動きによる姿勢制御に伴う強いられた筋緊張により不快感を伴う．さらに人体は下肢と骨盤，腰椎は密接に関連しており，下肢の運動を伴わない骨盤，腰椎の運動は自然な動きとはいえない． In a rocking chair or a balance ball as in Patent Documents 2-4, the seat surface moves in an unstable manner to balance the back muscles, which causes muscle fatigue. As in Non-Patent Document 1, there is a chair that passively tilts the seat surface at a constant rhythm by a motor, but it is not effective due to the muscular tension imposed by the posture control due to the movement unrelated to one's own intention. With a pleasant sensation. Furthermore, since the human body is closely related to the lower limbs and pelvis, and the lumbar spine, movements of the pelvis and lumbar spine without movement of the lower limbs cannot be said to be natural movements.
長時間直立姿勢で起立することは腰痛を引き起こしやすいが，多くの人は「休め」の姿勢にて回避している．「休め」の姿勢は重心を片脚に移す姿勢で，これを左右に交互に行うことである．この時，図１のように骨盤１が側方に傾き（骨盤側方傾斜），腰椎２は側彎し背筋３の長さが片方で短縮と他方で伸張し，筋緊張が緩和される．椎間板や椎間関節も動くことになり，同部の酸素，栄養の拡散が促進される．また長時間座位による腰痛は歩行を行うとより改善されるが，歩行に伴う下肢−骨盤−腰椎の連動した動きは全身性の筋緊張の緩和と血流の改善をもたらす．これを椅子で再現することを今回の発明の目的とする． Standing upright in an upright position for a long time tends to cause back pain, but many people avoid it in the "rest" position. The “rest” posture is a posture in which the center of gravity is transferred to one leg, and this is performed alternately to the left and right. At this time, as shown in FIG. 1, the pelvis 1 leans laterally (pelvic lateral lean), the lumbar vertebra 2 scoliosis, and the length of the back muscles 3 shortens on one side and extends on the other side, relaxing the muscle tone. The intervertebral disc and facet joints also move, and the diffusion of oxygen and nutrients in the same part is promoted. Back pain caused by sitting for a long time is improved by walking, but the coordinated movement of the lower limbs-pelvis-lumbar spine accompanying walking leads to systemic muscle tone relaxation and blood flow improvement. The purpose of this invention is to reproduce this on a chair.
本発明の椅子は，ペダルに連携して椅子が傾動するもので，ペダルが左右でふたつあり，片方を踏み込むと，その反対側の座面が持ち上がり傾斜する．他方のペダルを踏み込むと逆の方向に座面が傾動する． In the chair of the present invention, the chair tilts in association with the pedal, and there are two pedals on the left and right, and when one is depressed, the seating surface on the opposite side is lifted and tilted. When the other pedal is depressed, the seat surface tilts in the opposite direction.
歩行時に行われる下肢−骨盤−腰椎の連動した動き，すなわち片側脚を踏み込むと同側へ骨盤が側方傾斜し，腰椎が側彎するという連動した動きを座位にても行うことができ，固定姿勢に伴う腰痛を緩和する．能動的な動きであり不快感が少ない．動きながらもデスクワークを妨げる姿勢にはならない． The limb-pelvis-lumbar interlocking movements performed during walking, that is, the pelvis tilts laterally to the same side when one leg is stepped on, and the lumbar spine scoliosis can be performed in the sitting position, and is fixed. Alleviate back pain associated with posture. It is an active movement and there is little discomfort. While moving, the posture does not interfere with deskwork.
本発明の実施形態１を図２〜５を用いて説明する．人が座る時に臀部や大腿部と接する座面４とそれを支える台部５がある．脚部６の上部に台部５がある．台部５から側上方に手台部７があり，後方に背もたれ８がある．円柱支軸９が座面４の左右方向において正中にあり，その円柱支軸９の軸方向が前後方向にあり，台部５と座面４が円柱支軸９を介して接続しており，座面４が軸回旋して側方傾斜することが可能である．座面４は側方でより厚くなっており，座面４が側方傾斜した際の体のずり落ちを防ぐ．下記のように座面４がペダルに連動して傾動する． The first embodiment of the present invention will be described with reference to FIGS. There is a seat surface 4 that comes into contact with the buttocks and thighs when a person sits down, and a pedestal 5 that supports it. The base 5 is located above the legs 6. There is a hand stand 7 on the upper side of the stand 5 and a backrest 8 behind it. The columnar support shaft 9 is in the center of the seat surface 4 in the left-right direction, the axial direction of the columnar support shaft 9 is in the front-rear direction, and the base 5 and the seat surface 4 are connected via the column support shaft 9, It is possible for the seat surface 4 to rotate axially and tilt laterally. The seat surface 4 is thicker at the side, and prevents the body from slipping off when the seat surface 4 is tilted to the side. The seat surface 4 tilts in conjunction with the pedal as shown below.
実施形態１は，人力によるシリンダー方式である．図２〜５のように左右にペダル１０があり，ペダル１０踏み込み動作により動くペダルシリンダー１１が左右のペダル１０それぞれにある．台部５の左右に座面シリンダー１２が設置され，座面４と接続されている．ペダルシリンダー１１とその対側の座面シリンダー１２はチューブ１３を介して接続している．左ペダルを踏むと右の座面シリンダーが座面右側を持ち上げ，座面が左側方傾斜する．右ペダルを踏むと逆に座面が右側方傾斜する．ストッパー１４で傾動を停止させることもできる． The first embodiment is a manual cylinder system. As shown in FIGS. 2 to 5, there are pedals 10 on the left and right, and a pedal cylinder 11 that moves when the pedal 10 is depressed is on each of the left and right pedals 10. Seat cylinders 12 are installed on the left and right of the base 5, and are connected to the seat 4. The pedal cylinder 11 and the seat cylinder 12 on the opposite side of the pedal cylinder 11 are connected via a tube 13. When the left pedal is depressed, the right seat cylinder lifts the right side of the seat, and the seat tilts to the left. Seating surface Conversely inclines right side Pressing the right pedal. The tilting can be stopped by the stopper 14.
実施形態２は前述の動力が電気式であり，図６，７のように，左右ペダル１５それぞれにあるスイッチ１６とバネ１７があり，スイッチ１６に電線１８を介して接続している座面下のモーター１９が設置されている．モーター１９に接続されたウォームギヤ２０により座面４が傾動する．左電動ペダルを踏むと座面４が左側方傾斜し，右電動ペダルを踏むと逆に座面４が右側方傾斜する． In the second embodiment, the above-described power is electric, and as shown in FIGS. 6 and 7, there is a switch 16 and a spring 17 on each of the left and right pedals 15, and the seat bottom surface is connected to the switch 16 via an electric wire 18. The motor 19 of is installed. The seat surface 4 tilts by the worm gear 20 connected to the motor 19 . When the left electric pedal is depressed, the seat surface 4 tilts to the left, and when the right electric pedal is depressed, the seat surface 4 tilts to the right.
Claims (5)
座面が，着座者から見た側方において水平な状態から側方傾斜することが可能で，その側方傾斜は左右両側方に傾斜可能で，
足で踏むことができるペダルが椅子に付属し，ペダルを踏み込むと座面が側方傾斜し，
ペダルが左右にあり，左右それぞれのペダル操作により座面がそれぞれ同側に側方傾斜することを特徴とする椅子． It has a seat surface that the buttocks and thighs come into contact with when seated, and a pedestal that supports the seat surface,
The seat surface can be tilted sideways from a horizontal state viewed from the seated person, and the side tilt can be tilted to the left and right sides,
A pedal that can be stepped on is attached to the chair, and when you step on the pedal, the seat surface tilts sideways,
A chair characterized in that the pedals are located on the left and right, and the seating surfaces are tilted to the same side by operating the pedals on the left and right respectively.
ペダルにペダルシリンダーが設置され，座面と台部に介在する座面シリンダーが設置され，ペダルシリンダーと座面シリンダーとはチューブを介して接続しており，
座面がペダルに連動して傾動することを特徴とする請求項１又は２に記載の椅子． The power to tilt the seat surface sideways is due to human power,
The pedal cylinder is installed on the pedal, the seat surface and the seat cylinder interposed between the base and the pedal cylinder are installed, and the pedal cylinder and the seat cylinder are connected via a tube.
The chair according to claim 1 or 2, wherein the seat surface tilts in conjunction with the pedal.
ペダルにスイッチが設置され，座面と台部に介在するモーターが設置され，スイッチによりモーターが作動し，
座面がペダルに連動して傾動することを特徴とする請求項１又は２に記載の椅子． The power to tilt the seat surface sideways is due to electric power,
Pedal switch is installed in a motor chromatography interposed seating surface and the base portion is installed, the motor chromatography is operated by the switch,
The chair according to claim 1 or 2, wherein the seat surface tilts in conjunction with the pedal.
座面に，傾動を止めるストッパーとなる突起物を有することを特徴とする請求項１から４のいずれかに記載の椅子．
The upper surface of the seat is higher on the side,
The chair according to any one of claims 1 to 4, wherein the seating surface has a protrusion serving as a stopper that stops tilting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015206806A JP6680508B2 (en) | 2015-10-20 | 2015-10-20 | Low back pain chair |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015206806A JP6680508B2 (en) | 2015-10-20 | 2015-10-20 | Low back pain chair |
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| Publication Number | Publication Date |
|---|---|
| JP2017077377A JP2017077377A (en) | 2017-04-27 |
| JP2017077377A5 JP2017077377A5 (en) | 2018-08-02 |
| JP6680508B2 true JP6680508B2 (en) | 2020-04-15 |
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