EP2016866B1 - Chair-type massage machine - Google Patents

Chair-type massage machine Download PDF

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Publication number
EP2016866B1
EP2016866B1 EP08012969A EP08012969A EP2016866B1 EP 2016866 B1 EP2016866 B1 EP 2016866B1 EP 08012969 A EP08012969 A EP 08012969A EP 08012969 A EP08012969 A EP 08012969A EP 2016866 B1 EP2016866 B1 EP 2016866B1
Authority
EP
European Patent Office
Prior art keywords
backrest
seat
drive source
link
massage machine
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
EP08012969A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2016866A1 (en
Inventor
Yoshitoshi Morita
Tsuyoshi Watanabe
Hidefumi Nomura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric Co Ltd
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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Publication of EP2016866A1 publication Critical patent/EP2016866A1/en
Application granted granted Critical
Publication of EP2016866B1 publication Critical patent/EP2016866B1/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs

Definitions

  • the present invention relates to massage machines of the chair type having a backrest and a seat which can be reclined. More particularly, the invention relates to chair-type massage machines comprising a backrest and a seat which can be reclined by a single drive source while permitting the person to be treated to hold a relaxed posture.
  • Chair-type massage machines are known in which a backrest and a seat have massage means and can be reclined.
  • JP2003-289975A and US 6,974,186 B1 disclose a chair-type massage machine and a chair usable in such a massage machine, respectively, comprising a reclining mechanism having independent drive sources provided for the respective backrest and seat so as to render each of the backrest and the seat reclinable independently of the other.
  • the reclining mechanism comprising a plurality of drive sources encounters difficulty in positioning the backrest and the seat at a target angle in synchronism due, for example, to anomalies in the individual drive sources and variations in the load to be applied to the respective drive sources.
  • the massage machine will then involve such an unnatural movement that one of the backrest and seat reaches the target angle with a delay after the other component has reached the target angle.
  • Patent application EP 0 361 302 A2 discloses a chair-type massage machine with a reclining mechanism for the backrest that is mechanically coupled to a pivotable seat, wherein the movement of the backrest and the seat are driven by a single drive source.
  • the coupling mechanism is such that one side of the seat is lowered continuously while the backrest is being reclined, which does not ensure a relaxed position of a user during the movement.
  • An object of the present invention is to provide a chair-type massage machine comprising a backrest and a seat which can be reclined by a single drive source while permitting the user to hold a relaxed posture.
  • the present invention provides a chair-type massage machine comprising a backrest for the back of the user to bear on, a seat for the user to sit in, and a reclining mechanism for pivotally moving the backrest and the seat.
  • the reclining mechanism comprises a single drive source, and the single drive source is coupled to the backrest and/or the seat by a link assembly.
  • the link assembly is operable to pivotally move the backrest from a raised position to a reclined position via an intermediate position by operating the single drive source, the seat being tiltable to raise a front end thereof when the backrest is pivotally moved from the raised position to the intermediate position, the seat being tiltable to lower the raised lower end thereof when the backrest is pivotally moved from the intermediate position to the reclined position.
  • the backrest and the seat can be reclined while permitting the user to hold a relaxed posture.
  • the single drive source is coupled to one of the backrest and the seat, the backrest or the seat having the single drive source coupled thereto being pivotally movably supported.
  • the backrest is connected to the seat by the link assembly having a joint portion, which is movable along a guide rail.
  • the single drive source is operable to move the joint portion of the link assembly along the guide rail, as coupled to the pivotal movement of the backrest or the seat, and to pivotally move the backrest from a raised position to a reclined position via an intermediate position, the guide rail having a curved guide face for tilting the seat to raise a front end thereof when the backrest is pivotally moved from the raised position to the intermediate position and for tilting the seat to lower the raised front end thereof when the backrest is pivotally moved from the intermediate position to the reclined position.
  • the backrest and the seat can be reclined while permitting the user to hold a relaxed posture.
  • the single drive source is coupled to one of the backrest and the seat.
  • the backrest or the seat having the single drive source coupled thereto is pivotally movably supported.
  • the link assembly comprises a link that is pivoted at one end thereof to the backrest or the seat having the drive source coupled thereto, the link having the other end pivoted to a cam member supported by the base, the cam member being provided at a portion thereof with a cam face in bearing contact with the backrest or the seat not coupled to the single drive source.
  • the single drive source is operable to cause the link to rotate the cam member and to pivotally move the backrest from a raised position to a reclined position via an intermediate position, the cam face being so shaped as to tilt the seat to raise a front end thereof when the backrest is pivotally moved from the raised position to the intermediate position and as to tilt the seat to lower the raised front end thereof when the backrest is pivotally moved from the intermediate position to the reclined position.
  • the backrest and the seat can be reclined while permitting the user to hold a relaxed posture.
  • any one of the forgoing chair-type massage machines a single drive source is provided for the reclining mechanism, which is therefore unlikely to become large-sized or complex. Furthermore, the use of the link assembly or the like assures a stabilized reclining movement free of variations.
  • the present invention provides chair-type massage machines 10, which will be descried below with reference to the drawings.
  • the massage machine 10 has a base 12 to be placed on the floor.
  • the base 12 has supported thereon a seat 30 for the user to sit in and a backrest 20 for the back of the user to bear on.
  • the seat and the backrest are pivotally movable by the reclining mechanism 40 to be described below.
  • the backrest 20 comprises a backrest frame 22 and a cushion 23 or the like provided around the frame 22 and is provided in its interior with massage means 24 movable upward and downward by a lift unit 25 for massaging the shoulders, back, waist, etc. of the user.
  • the seat 30 comprises a cushion 33 or the like provided around a seat frame 32 and is provided in its interior with an air bag or like massage means (not shown) as required.
  • a leg portion 38 for placing thereon the legs of the user can be provided at the front end of the seat 30.
  • the leg portion 38 shown in FIG. 1 is made integral with the seat 30, whereas the leg portion 38 may be adapted to accommodate therein the calves and the feet for a massage unit (not shown) to give a massage to the calves as shown in FIG. 6 or the like to be described later.
  • the leg portion 38 may be made pivotally movable relative to the seat 30.
  • the reclining mechanism 40 comprises a drive source 42 and a link assembly 50.
  • the reclining mechanism 40 of the present invention is characterized in that both the backrest 20 and the seat 30 can be reclined by the single drive source 42. Furthermore, the backrest 20 and the seat 30 can be reclined while permitting the user to hold a relaxed posture.
  • the expression that the user as positioned in a relaxed posture refers to such a state of the user that he or she is not particularly burdened on his body, or is not locally subjected to a force, or will not assume any objectionable posture when the backrest 20 is reclined with the user seated in the seat 30 with his back bearing on the backrest 20. If the backrest 20 only is merely reclined without tilting the seat 30, an objectionable force is likely to act on the abdominal muscle or waist to reduce the massage effect.
  • the backrest 20 and the seat 30 can be reclined so as to retain the following "relax angle" in accordance with the reclining angle of the backrest 20, so that the machine can be reclined while permitting the user to hold a relaxed state.
  • the seat 30 is so tilted that the front end of the seat 30 is positioned at a slightly higher level above the floor than the rear end thereof. This enables the user to seat deep in the seat 30 and feel relaxed.
  • the seat 30 is tilted with its front end moved up. This enables the user to follow the reclining movement of the backrest 20 and feel at ease without applying any force to the abdominal muscle.
  • the backrest 20 is reclined to an intermediate value of the greatest reclining angle (hereinafter referred to as an "intermediate position"), the seat 30 is inclined greatest with its front end raised to the highest level.
  • the seat 30 When the backrest 20 is reclined further from the intermediate position, the seat 30 is inclined with its front end moved down, and the seat 30 returns to the same angle as in the raised position upon the backrest 20 reaching the greatest reclining angle (hereinafter referred to as a "reclined position"), whereby the backrest 20 and the seat 30 are brought to a nearly flat state.
  • the backrest 20 After the backrest 20 has moved past the intermediate position, the back of the body of the user is held fully in intimate contact with the backrest 20, with the center of gravity shifted toward the backrest 20.
  • the massage operation to be subsequently performed can produce the greatest possible effect.
  • the backrest 20 and the seat 30 can be returned from the flat state to the raised position through a movement reverse to the foregoing movement while permitting the user to remain relaxed, with the result that the massage effect given will not be nullified or diminished.
  • FIG. 1 shows a single actuator serving as the single drive source 42 for the reclining mechanism 40.
  • the actuator has one end connected to the upper end of a fixed frame 51 extending forwardly upward approximately from the center of the base 12. The other end of the actuator is connected to the lower end of the backrest 20.
  • the contraction of the actuator in the chair-type massage machine 10 pulls the lower end of the backrest 20 as supported by the pivots 90, whereby the backrest 20 itself is reclined as shown, for example, in FIGS. 2 and 3 .
  • the link assembly 50 can be composed of a plurality of links 53, 55 and 57 in combination.
  • the link assembly 50 comprises a first link 53 pivoted as at 91 approximately to the center of the base 12, a second link 55 pivoted to a portion of the first link 53 close to the free end thereof and to the lower end of the backrest 20, respectively, as at 92, 93 for interconnecting the link 53 and the backrest 20, and a third link 57 pivoted to the free end extremity of the first link 53 and to a bracket 35 projecting from the bottom of the seat 30, respectively, as at 94, 95 for interconnecting the link 53 and the bracket 35.
  • the present embodiment reclines with the backrest 20 and the seat 30 held at a relaxing angle, and the seat 30 is held approximately at the same level in the raised position of FIG. 1 and in the reclined position of FIG. 3 .
  • the first link 53 and the third link 57 move symmetrically about a vertical line in FIG. 1 and FIG. 3 .
  • the stroke length of the second link 55 operatively connected to the backrest 20 is so determined as to effect this movement. If the actuator serving as the drive source 42 has a sufficiently large stroke length, the pivot 92 between the second link 55 and the first link 53 can be positioned closer to the pivot 94 connecting the third link 57 to the first link 53, such that in an extreme case, pivots 92, 94 can be a common pivot.
  • the highest level of the front end of the seat 30 is adjustable by shifting the position of the pivot 95 for connecting the third link 57 to the seat 30. (As the pivot 95 is positioned closer to the pivot 90, the level can be higher.)
  • the drive source 42 is operated, starting to recline the backrest 20 from the raised position of FIG. 1 , whereby the second link 55 is pushed forward, and the first link 53 inclines forward about the pivoted point 91 on the base 12 to push out the third link 57 forward.
  • the link assembly 50 becomes so shaped that the first link 53 and the third link 57 are arranged along a straight line, bringing the front end of the seat 30 to the highest level.
  • the backrest 20 reclines from the intermediate position of FIG. 2 , the second link 55 is pushed forward, and the first link 53 further inclines forward about the pivoted point 91 on the base 12. This reclines the third link 57, pulling down the raised front end of the seat 30 and consequently bringing the backrest 20 and the seat 30 to a flat state as shown in FIG. 3 .
  • the backrest 20 is reclined by operating the drive source 42, whereby the seat 30 is also tilted, with the backrest 20 and the seat 30 held at a relaxing angle, so that the user as seated in the seat 30 can be moved to a lying position without permitting any disagreeable force acting on the body of the user.
  • various modes of massage can be given by the massage means to massage the body effectively.
  • the backrest 20 and the seat 30 can be operated in a manner reverse to the above by operating the drive source in a direction opposite to the above, i.e., by extending the actuator in the illustrated embodiment, whereby the machine can be returned to the raised position while holding the relaxing angle.
  • the backrest 20 and the seat 30 can be inclined at different relaxing angles by varying the length of the links 53, 55, 57 of the link assembly 50 and shafting the position of the pivoted points 91, 92, 93, 94, 95.
  • an actuator may be provided between the first link 53 and the base 12 as shown in FIG. 4 to move the first link 53 about the pivot 91.
  • an actuator may be provided between the pivot 94 for connecting the first link 53 to the third link 57 and the base 12 as shown in FIG. 5 for moving the first link 53 about the pivot 91.
  • FIGS. 6 to 9 show another chair-type massage machine 10 wherein a reclining mechanism 40 comprises a link assembly 50.
  • a reclining mechanism 40 comprises a link assembly 50.
  • the drive source 42 is not shown, whereas an actuator or the like is provided for reclining the backrest 20.
  • cushions are not shown.
  • the backrest 20 and the seat 30 are held at a relaxing angle, for example, of 109 degree when the chair-type massage machine 10 is in a raised position.
  • the seat 30 is so tilted as to raise its front end. This decreases the angle between the backrest 20 and the seat 30 to 106 degree in FIG. 7 , shifting the center of gravity of the user toward the backrest 20. Accordingly no objectionable force will act on the body of the user when the backrest 20 is reclined.
  • the first link 53 of the link assembly 50 is nearly aligned with the third link 57 thereof as seen in FIG.
  • the seat 30 has its front end raised to the highest level.
  • the third link 57 is reclined about the pivot 94, pulling down the seat 30 as shown in FIG. 9 .
  • the backrest 20 and the seat 30 can be moved to a nearly flat state (the backrest 20 and the seat 30 shown are at a relaxing angle of 160 degree).
  • the reclining mechanism 40 comprises a link assembly 50 for reclining the backrest 20 and the seat 30, whereas according to the present embodiment, the first link 53 is replaced by a guide rail 60 for realizing the same operation as above.
  • the drive source 42 is not shown for a better understanding, an actuator or the like is provided for reclining the backrest 20 as in Embodiment 1. Furthermore, cushions and the like are not shown.
  • Embodiments 1 and 2 are connected together by a pivot 74, which has a roller 72.
  • the roller 72 is supported by a flexible joint portion 70 and is movable on a guide rail 60 provided on the base 12.
  • the roller 72 and the guide rail 60 are so designed that one of them is shaped to have a recess, i.e., a groove, and the other thereof has a projection fittable in the groove.
  • Each of the second link 55 and the third link 57 has a length, which can be determined suitably, for example, in accordance with the position of the guide rail 60 and the level of the front end of the seat 30.
  • the roller 72 provided on the joint portion 70 can be prepared from a resin.
  • the guide rail 60 has a curved guide face 62 for contact with the roller 72 so as to recline the backrest 20 and the seat 30 having the relaxing angle therebetween.
  • the guide face 62 has a forwardly upward slope so as to make the seat 30 pivotally movable with its front end moving upward during the movement from a raised position to an intermediate position.
  • the roller 72 is pushed by the second link 55 to move forwardly upward along the guide face 62, causing the third link 57 to push the front portion of the seat 30 upward as shown in FIGS. 11 and 12 .
  • the curve of the guide face 62 has a recessed circular-arc form 64 which is centered about the pivot 90 serving as the center of pivotal movement of the seat 30 and the backrest 20.
  • the guide face 62 changes from the recessed circular-arc form 64 to a projecting circular-arc form 65 at a position where the backrest 20 and the seat 30 reach the vicinity of the intermediate position.
  • the guide face 62 extends forward, the guide face has a downward slope 66.
  • the seat 30 having its front end raised is pulled down by the reclining of the third link 57, with the result that the backrest 20 and the seat 30 can be moved until they assume a flat state as seen in FIG. 14 .
  • the relaxing angle between the backrest 20 and the seat 30 is made adjustable so that the user can hold a relaxed posture.
  • the form of the guide face 62 need not be limited to that of the present embodiment.
  • the guide face can be so shaped as in Embodiment 4 given below, or can be modified suitably in accordance with the desired relaxing angle.
  • FIGS. 15 to 19 show another embodiment comprising a guide rail 60 which is different from the one included in Embodiment 3. This embodiment is the same as Embodiment 3 with the exception of the form of the guide face 62.
  • This embodiment is so designed that the relaxing angle increases as the backrest 20 is reclined by a recessed circular-arc form 64 when the machine is brought from the raised position to the intermediate position.
  • the relaxing angle is 106 degree in the raised position as shown in FIG. 15 .
  • the angle increases to 109 degree, 111 degree or 120 degree as shown in FIGS. 16 to 18 . Accordingly, the body of the user as seated in the seat 30 can be reclined in a natural state, with his waist stretched gradually.
  • the guide face 62 extends forward substantially horizontally as indicated at 67. This causes the third link 57 to rotate in the reclining direction, pulling the raised front end of the seat 30 down, whereby the backrest 20 and the seat 30 are brought to a nearly flat state as shown in FIG. 19 (at 160 degree as illustrated).
  • FIGS. 20 to 24 show an embodiment wherein another different guide rail 60 is used.
  • the guide face 62 has a recessed circular-arc form 64 centered about the pivot 95 for the third link 57, whereby the seat 30 can be held at rest (at a constant angle of 11 degree with the floor) until the backrest 20 is reclined from the raised position to 120 degree.
  • the seat 30 thereafter rises and moves up to the highest level through 30 degree in FIG. 22 .
  • the seat then lowers to form an increased angle with the backrest 20.
  • the guide face 62 extends forward substantially horizontally as indicated at 67.
  • the third link 57 rotates in the reclining direction, pulling the raised front end of the seat 30 down, whereby the backrest 20 and the seat 30 are brought to a nearly flat state as shown in FIG. 24 (at 160 degree as illustrated).
  • varying relaxing angles can be realized merely by modifying the form of the guide face 62.
  • the roller 72 serves as a pivot 74 for the joint portion 70, whereas the pivot 74 can be made movable on the guide face 62, with the roller 73 dispensed with.
  • This embodiment uses a cam 80 for giving an adjustable relaxing angle.
  • the drive source 42 is not shown, whereas an actuator or the like is provided for reclining the backrest 20 as in Embodiment 1. Cushions are not shown.
  • the cam 80 is pivoted at an eccentric position to a support bracket 84 projecting from the base 12 to provide a reclining mechanism 40.
  • the cam 80 is coupled to the backrest 20 by a second link 55.
  • the cam 80 has an approximately elliptical cam face 82 on its outer periphery.
  • the support bracket 84 and the second link 55 are pivoted respectively as at 97 and 98 to the cam at different positions on the major axis of the cam face 82.
  • a roller 87 is supported by a bracket 35 projecting from the bottom wall of the seat 30 so as to be in bearing contact with the cam face 82.
  • the roller 97 rolls along the cam face 82.
  • modifications of the form of the cam face 82 provide varying relaxing angles.
  • the backrest 20 is reclined by the drive source 42, and this movement is delivered through the link assembly 50, guide rail 60 or cam 80 to pivotally move the seat 30, whereas an actuator serving as the drive source 42 may be interposed between the base 12 and the third link 57 in Embodiments 3 to 5 so as to move the third link 57 about the pivot 95.
  • the cam 80 may be made rotatable by a drive source.
  • the present invention provide useful chair-type massage machines comprising a backrest and a seat which can be reclined by a single drive source while permitting the user to hold a relaxed posture.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Massaging Devices (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
EP08012969A 2007-07-19 2008-07-17 Chair-type massage machine Expired - Fee Related EP2016866B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007187887A JP4435215B2 (ja) 2007-07-19 2007-07-19 椅子型マッサージ機

Publications (2)

Publication Number Publication Date
EP2016866A1 EP2016866A1 (en) 2009-01-21
EP2016866B1 true EP2016866B1 (en) 2010-09-15

Family

ID=39790114

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08012969A Expired - Fee Related EP2016866B1 (en) 2007-07-19 2008-07-17 Chair-type massage machine

Country Status (6)

Country Link
US (2) US20090021063A1 (ja)
EP (1) EP2016866B1 (ja)
JP (1) JP4435215B2 (ja)
CN (1) CN101347381B (ja)
DE (1) DE602008002488D1 (ja)
TW (1) TW200916085A (ja)

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JP5274325B2 (ja) * 2009-03-23 2013-08-28 三洋電機株式会社 マッサージ機
JP5350961B2 (ja) * 2009-09-30 2013-11-27 ファミリーイナダ株式会社 椅子型マッサージ機
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CN102375882B (zh) * 2011-09-19 2014-10-15 奇智软件（北京）有限公司 一种快速访问网页的方法、装置及一种浏览器
CN103536082A (zh) * 2012-07-16 2014-01-29 王万强 一种健身椅
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CN105581541B (zh) * 2014-10-20 2018-10-02 乔山健身器材（上海）有限公司 具有仰躺功能的电动椅
JP6436387B2 (ja) * 2014-12-26 2018-12-12 株式会社フジ医療器 椅子式マッサージ機
JP6632812B2 (ja) * 2015-04-28 2020-01-22 株式会社フジ医療器 椅子式マッサージ機
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CN108670783B (zh) * 2018-05-17 2019-11-26 王文霞 一种舒适型医疗护理背部锤击椅
JP6624752B1 (ja) 2018-11-02 2019-12-25 忠寛 奥平 診察台
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Also Published As

Publication number Publication date
DE602008002488D1 (de) 2010-10-28
CN101347381B (zh) 2011-08-31
US20090021063A1 (en) 2009-01-22
JP2009022485A (ja) 2009-02-05
US20110156458A1 (en) 2011-06-30
CN101347381A (zh) 2009-01-21
JP4435215B2 (ja) 2010-03-17
TW200916085A (en) 2009-04-16
EP2016866A1 (en) 2009-01-21

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