WO2010064460A1 - Massage chair with foot massaging device - Google Patents

Massage chair with foot massaging device Download PDF

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Publication number
WO2010064460A1
WO2010064460A1 PCT/JP2009/058136 JP2009058136W WO2010064460A1 WO 2010064460 A1 WO2010064460 A1 WO 2010064460A1 JP 2009058136 W JP2009058136 W JP 2009058136W WO 2010064460 A1 WO2010064460 A1 WO 2010064460A1
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WO
WIPO (PCT)
Prior art keywords
foot
link
massage
seat
pivot
Prior art date
Application number
PCT/JP2009/058136
Other languages
French (fr)
Japanese (ja)
Inventor
康一 沼田
輝男 三原
穎 劉
文敬 石黒
哲也 石川
賢 玉木
Original Assignee
大東電機工業株式会社
エムテック株式会社
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
Priority claimed from JP2008311014A external-priority patent/JP2010131249A/en
Priority claimed from JP2008311013A external-priority patent/JP2010131248A/en
Priority claimed from JP2009013568A external-priority patent/JP2010167155A/en
Application filed by 大東電機工業株式会社, エムテック株式会社 filed Critical 大東電機工業株式会社
Priority to CN2009801318659A priority Critical patent/CN102123690A/en
Publication of WO2010064460A1 publication Critical patent/WO2010064460A1/en

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61HPHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/01Constructive details
    • A61H2201/0119Support for the device
    • A61H2201/0138Support for the device incorporated in furniture
    • A61H2201/0149Seat or chair
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61HPHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/01Constructive details
    • A61H2201/0161Size reducing arrangements when not in use, for stowing or transport
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61HPHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2205/00Devices for specific parts of the body
    • A61H2205/10Leg
    • A61H2205/106Leg for the lower legs
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61HPHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2205/00Devices for specific parts of the body
    • A61H2205/12Feet

Definitions

  • the present invention relates to a massage chair provided with a foot massage device.
  • Patent Document 1 As a massage chair provided with a foot massage device, for example, there is one disclosed in Patent Document 1.
  • This massage chair has a backrest part at the back of the seat part and a foot massage device at the front part, and the backrest part is equipped with a massage mechanism that massages the user's back part. It has a built-in lower limb massage mechanism that massages the lower limbs of a person. Further, the backrest portion can be reclined back and forth, and the footpad device is swingably provided in front of the seat portion via a support member.
  • Such a massage chair is not only used for performing a massage but also often used as a mere chair.
  • this type of massage chair often has a soft cushion built into the seat, etc., and since the backrest has a reclining function, it is suitable for use as a sofa.
  • the foot massage device of Patent Document 1 has a holding groove formed on the front surface thereof, so that even if the massage function is not used, the lower limb must be fitted into the holding groove, thereby freeing the foot. Movement was restricted and it was difficult to have a comfortable posture. It also contributed to the loss of the appearance of the chair.
  • This massage chair has a push-pull mechanism that can move the foot massage device between a use position and a built-in position below the seat, and the push-pull mechanism is installed on both sides of the massage chair.
  • a guide rail, a push / pull rod that moves in and out along the guide rail, and a carriage plate coupled to the push / pull rod are connected to the foot plate by a pin. Therefore, after the foot massage device is located at the use position, the front (massage surface) and the rear surface (foot rest surface) of the foot massage device can be freely switched.
  • the configuration employing the guide rail requires high precision and careful processing in that a smooth bend is formed on the guide rail, and has a feature that it is difficult to reduce the manufacturing cost.
  • strong driving is required, but on the other hand, it is necessary to devise measures to suppress driving noise and vibration. There was room for improvement, such as increasing the burden.
  • a foot massage device there is a desire to take a relaxed posture (a posture with the knee extended as much as possible) such that the user throws the foot forward.
  • an object of the present invention is to provide a massage chair that can solve the simplification, weight reduction, and cost reduction of the structure at once.
  • an object of the present invention is to provide a massage chair in which a user can take a relaxed posture such as extending his / her legs forward when using a foot massage device, thereby enhancing the feeling of use.
  • the foot massage device is formed in front of the seat and at the “use position” where the user's lower limb can be massaged, and below the seat. The “storage position” is moved between.
  • the present invention may be applied even when a downward load exceeding an allowable amount is applied to the foot kneading device when the foot kneading device is held at the use position (when floating). It is another object of the present invention to provide a chair type massage machine configured so as not to be damaged or broken.
  • the massage chair provided with the foot massage device is a massage chair having a seat portion, a backrest portion provided at the rear portion of the seat portion, and a foot massage device installed at the front portion of the seat portion.
  • the footgrip device floats above the floor surface in front of the seat portion and lifts the user's lower limb.
  • the foot massaging device is housed in a housing position formed below the seat portion when it moves to a use position that is a massageable position.
  • the foot grinder in the use position has a back surface facing the floor and a bottom surface facing forward
  • the foot grinder in the storage position has a bottom surface facing forward. It is in a state where it is substantially flush with the front end of the seat and the front of the lower limb is massaged upward.
  • the advancing and retreating mechanism is an advance operation for bringing the foot grinder to the use position by raising the back upper part of the foot grinder in the storage position forward from the front end of the seat or in the middle of the advance. It is configured to perform a retreat operation for returning the foot grinder to the storage position by lowering the back upper portion until the front upper portion of the foot grinder in the use position is lower than the seat lower portion, and then retreating downward to the seat portion. can do.
  • the advancing / retreating mechanism is connected between a stationary pivot provided at the lower portion of the seat and a movable pivot provided at the upper back of the foot grinder so that the movable pivot is moved forward and backward with the stationary pivot as a fulcrum.
  • a rotation angle limiting member for preventing an angle between the link and the foot massage device from being equal to or less than a predetermined angle is provided at a connecting portion between the moving pivot portion of the foot massage device and the link. It is preferable that the angle is set so that the foot massaging device is not in contact with the floor surface at the use position of the foot massaging device.
  • the rotation angle limiting member is a pin member that is parallel to a rotation axis that rotatably connects the movement pivot support portion of the foot massage device and the link, and the pin member is a link and a movement pivot. It is good to arrange
  • the link is formed of a single member that connects a stationary pivot portion provided at the center portion in the left-right direction of the seat portion and a movable pivot portion provided at the center portion in the left-right direction of the foot massage device. Is preferred. Furthermore, it is preferable that the link is formed in a shape that curves in a C-shaped side view along the top from the front upper part of the foot gripping device when the foot gripping device is located at the storage position. .
  • the swing drive part of the advance / retreat mechanism may have an expansion / contraction mechanism driven by an electric motor.
  • the advancing / retracting mechanism may include a forward projecting mechanism that allows the foot kneading device in the use position to project forward while being in a floating state.
  • the forward projecting mechanism has a slide mechanism at the front end portion of the link that allows the foot gripping device to slide in the front-rear direction, and the slide mechanism biases the foot gripping device backward.
  • a member may be provided.
  • the advancing / retreating mechanism is connected between a stationary pivot provided at a lower portion of the seat and a movable pivot provided at an upper rear portion of the foot grinder so that the movable pivot is moved forward and backward with the stationary pivot as a fulcrum.
  • a back support frame comprising a lower slide frame and an upper slide frame that are slidable with each other is provided on the back surface portion of the foot massage device, and the foot massage device is attached to the lower slide frame.
  • the erection link is pivotably connected, a moving support portion is provided at the upper end portion of the upper slide frame, and the tip end portion of the link is swingably connected.
  • an overload that is a downward load that exceeds an allowable amount is applied to a portion that connects the advance / retreat mechanism or the foot massage device and the advance / retreat mechanism.
  • a buffer mechanism is provided for preventing the overload from being transmitted to the advance / retreat mechanism when applied.
  • the advancing / retreating mechanism has a propulsion shaft that moves back and forth with its axis centered in the front-rear direction, and is capable of moving the foot grinder between the use position and the storage position by the forward and backward movement of the propulsion shaft
  • the shock-absorbing mechanism may include linear damper means that is provided on the propulsion shaft and absorbs overload.
  • the advancing / retracting mechanism has a rotation shaft that rotates the axis center in the left-right direction, and the rotation of the rotation shaft enables the foot grinder to move between the use position and the storage position.
  • the said buffer mechanism may have a rotation damper means provided in the said rotation axis
  • the massage chair according to the present invention further simplification, weight reduction, and cost reduction of the structure can be solved at once.
  • the foot massage device when used, the user can take a relaxed posture by throwing his / her foot forward to enhance the feeling of use.
  • the chair type massage machine according to the present invention when the foot massage device is held in the use position (when floating in the air), a downward load exceeding the load is applied to the foot massage device. Even if it does, it does not lead to damage or failure.
  • FIG. 3 is a view as seen from an arrow A in FIG. 2 (a perspective view in a state viewed from below).
  • FIG. 3 is a view taken along line BB in FIG. 1.
  • A) is the perspective view corresponding to FIG. 2
  • B) is the perspective view which expanded and showed the vicinity of the rotation angle limiting member. It is the side view which showed the accommodation state of the foot massage device.
  • FIG. 12 is an overall external view, and in other drawings, a part of the structure is omitted as necessary for convenience of explanation.
  • the massage chair 1 has a seat portion 2 and a backrest portion 3 provided at the rear portion of the seat portion 2, and a lower limb of a user seated on the seat portion 2 is located at the front portion of the seat portion 2.
  • a foot massaging device 5 for massaging (especially calves) is provided.
  • a leg frame 6 for installing the massage chair 1 on the floor surface F is provided at the lower portion of the seat 2, and the seat 2 is predetermined by the leg frame 6. Being supported by height. Further, armrests 7 are provided so as to sandwich both sides of the seat portion 2 (see FIG. 12), and the leg frames 6 are hidden by these armrests 7 so that they cannot be seen from the outside.
  • the left-right direction in FIG. 1 is referred to as the front-rear direction in the actual apparatus
  • the up-down direction in FIG. 1 is referred to as the up-down direction in the actual apparatus. 1 is referred to as a horizontal direction or a width direction in an actual apparatus.
  • the seat portion 2 is wide enough to support the user's buttocks from below.
  • the lower part of the backrest part 3 is pivotally supported so that it can swing back and forth with respect to the rear part of the seat part 2 or the rear part of the leg frame 6.
  • the backrest 3 can be reclined by a reclining mechanism (not shown) such as a linear actuator mechanism disposed in the leg frame 6.
  • a back massage mechanism (not shown) that performs massage operations such as squeezing, striking, or vibrating is provided so as to be movable up and down.
  • the foot massage device 5 has a substantially square shape when viewed from the front, and a box shape that exhibits a rounded triangular shape when viewed from the side.
  • a pair of left and right holding grooves 10, 10 that allow the user's lower limbs (left and right feet) to be fitted are formed in front of the foot massage device 5.
  • a massage device for the lower limb that massages the lower limbs is incorporated in the inner facing surfaces of the holding grooves 10 (both sides that sandwich one of the inserted legs).
  • This lower limb massage device is configured to itch by swinging a plate that is long in the length direction of the foot left and right, or to be squeezed with an air bag that expands and contracts by air supply and discharge. Can do.
  • the foot massaging device 5 is lifted from the floor F in front of the seat 2 and can be used to massage the user's lower limbs (see FIG. 2), and a storage position P formed below the seat 2. (Refer to FIG. 1).
  • an advance / retreat mechanism 15 is provided below the seat portion 2 (inside the leg frame 6), and the seat portion 2 side (leg frame 6) and the foot kneading device 5 are connected via the advance / retreat mechanism 15. It becomes the composition which is done.
  • the advance / retreat mechanism 15 moves forward, the foot kneading device 5 advances to the use position U, and when the advance / retreat mechanism 15 moves backward, the foot kneading device 5 is stored in the storage position P.
  • 6 shows the storage state (storage position P) of the foot massage device 5
  • FIG. 10 shows the use state (use position U) of the foot massage device 5
  • FIGS. 7 to 9 show switching between the storage state and the use state. Is shown (halfway state).
  • the advance / retreat mechanism 15 includes a link 20, a swing drive unit 21, and rolling wheels 22.
  • a floor surface installation part (foot massage device 5) is used.
  • a pair of left and right moving wheels 23 are provided with respect to the rear end of the bottom surface.
  • the moving wheels 23 are lifted from the floor surface F, and are placed at four locations on the front, rear, left and right of the floor surface installation portion in order to maintain the installation stability.
  • a member 24 is provided.
  • the flooring member 24 is preferably formed of hard rubber or the like that has both vibration absorption and resistance to slipping on the floor surface F.
  • the entire chair is tilted backward (the chair front part is lifted) so that only the left and right moving wheels 23 are pressed against the floor surface F, and all the landing members 24 are thus moved. May be moved while rolling the moving wheel 23 so as to move away from the floor surface F.
  • the foot massaging device 5 is supported by the moving frame 28 in which the bottom support frame 26 and the back support frame 27 are assembled so as to exhibit an L shape in a side view so that the rigidity of the entire device is maintained.
  • the link 20 is provided at a stationary pivotal support portion 32 provided at a lower portion of the seat portion 2 (upper side in the leg frame 6) and a movement provided at a rear upper portion of the foot massage device 5 (upper portion of the rear support frame 27 in the moving frame 28). It is connected between the pivot 33.
  • the stationary pivot portion 32 and the movable pivot portion 33 are configured to hold the link 20 so as to be relatively rotatable around a pivot axis whose axis is directed in the left-right direction. Therefore, from the viewpoint that the foot massaging device 5 operates with respect to the seat portion 2, the link 20 is configured such that the movable pivot portion 33 is swingable in the front-rear direction with the stationary pivot portion 32 as a fulcrum. is there.
  • the stationary pivot part 32 is provided at the center part in the left-right direction of the seat part 2, and the movable pivot part 33 is provided at the center part in the left-right direction of the foot massage device 5.
  • the link 20 that connects the stationary pivot portion 32 and the movable pivot portion 33 is formed by only one.
  • the link 20 is formed in a highly rigid frame shape by connecting two link-composing rods 34 in parallel in the left-right direction at a predetermined interval and connecting them together.
  • the number of the link configuration rods 34 is not particularly limited, but a single link 20 is provided as a structure in which the entirety is assembled in a frame shape. That is, the link 20 is composed of a single bar member.
  • the link 20 is formed in a shape that curves in a side view C-shape. That is, when the foot massaging device 5 is described as being in the storage position P below the seat portion 2 (the state of FIG. 6), the link 20 is once extended backward from the stationary pivot portion 32, and thereafter The foot kneading device 5 is U-turned downward so as to go around from the upper front to the upper rear side through the top, and further extends forward and then reaches the moving pivot 33.
  • FIG. 6 when considering a virtual circle D having a maximum radius R that is a straight line connected from the axial center of the stationary pivot 32 to the floor surface F, the link 20 is centered on the stationary pivot 32.
  • the size of the imaginary circle D is such that it is entirely within the range of the virtual circle D. Therefore, even if the link 20 swings back and forth around the stationary pivot 32, the link 20 does not contact the floor surface F.
  • the link 20 is located behind the movable swing range when the foot massage device 5 is located at the storage position P (FIG. 6), and is movable when the foot massage device 5 is located at the use position U (FIG. 10). Swing back and forth so as to be in front of the moving range.
  • the movable swing range refers to a region where the link 20 swings when the foot massaging device 5 moves between the storage position P and the use position U.
  • a rotation angle limiting member 50 is provided at a connecting portion between the moving pivot 33 and the link 20 provided at the upper back of the foot massage device 5.
  • the movement pivot support portion 33 is lifted by the swing of the link 20 forward, and the back surface of the foot gripping device 5 (the back support frame 27 of the foot gripping device 5) and the front end portion of the link 20.
  • the angle ⁇ reaches a predetermined value
  • the rolling wheel 22 in short, the entire foot massaging device 5 is lifted from the floor F while maintaining the angle ⁇ .
  • the predetermined angle ⁇ is a form in which the front surface of the foot grinder 5 is in a horizontal state (including some steps) that is substantially flush with the upper surface of the seat portion 2 or is connected in a bent state in which the front is lowered.
  • the rotation angle limiting member 50 is a rotation that rotatably connects the movable support portion 33 and the link 20 at the moment when the rolling wheel 22 is lifted from the floor surface F. Engage with the foot massaging device 5 in front of the position directly below the axis of movement so that the movable pivot 33 and the link 20 do not rotate any further.
  • the rotation angle limiting member 50 is a pin member 50 parallel to a rotation axis that rotatably connects the movable pivot 33 and the link 20. That is, when the pin member 50 is sandwiched between the contact member 50A provided on the back support frame 27 and the link 20, the rotational state of the movable pivot 33 and the link 20 is restricted, and the angle ⁇ is fixed. Is done.
  • a single pin shaft is installed between the two link construction rods 34 constituting the link 20.
  • the present invention is not limited to this, and two pins may be provided so as to protrude from each link construction rod 34, or only one of them may be provided.
  • the swing drive unit 21 applies a driving force for swinging back and forth with respect to the link 20.
  • the swing drive unit 21 is provided with an expansion / contraction mechanism 36 that performs an expansion / contraction operation using the electric motor 35 as a drive source.
  • the expansion / contraction mechanism 36 for example, a mechanism using a screw shaft (such as a ball screw) or a combination mechanism of a rack and a pinion gear can be employed.
  • a bracket member 38 is provided on a pivot (rotating integrally with the link 20) that rotatably holds the rear end of the link 20 in the stationary pivot support 32 so as to rotate integrally therewith.
  • the front end portion of the expansion / contraction mechanism 36 is connected to the bracket member 38 so as to be relatively rotatable.
  • the rear end portion of the telescopic mechanism 36 is rotatably connected to the vertical flange portion 6 a of the leg frame 6.
  • the rolling wheel 22 is provided at the lower end of the back surface of the foot massaging device 5, that is, at the corner portion between the bottom surface and the back surface (the connecting portion between the bottom surface support frame 26 and the back surface support frame 27 in the moving frame 28). The top is held movably.
  • the outer peripheral surface (tire portion) of the rolling wheel 22 is preferably formed of hard rubber or the like that has both vibration absorption and resistance to slippage with respect to the floor surface F.
  • the advancing / retreating mechanism 15 has a forward projecting mechanism 60 for projecting the foot kneading device 5 in the use position further forward while floating.
  • the forward projecting mechanism 60 includes a gas pressure cylinder 61 that constantly biases the foot kneading device 5 in the use position toward the rear.
  • the back support frame 27 of the foot massaging device 5 is configured such that the slide outer frame 65 and the slide inner frame 66 are slidably combined with each other.
  • a gas pressure cylinder 61 is arranged.
  • the contact member 50 ⁇ / b> A with which the pin member 50 contacts is provided on the upper end portion of the back support frame 27 (the surface close to the link 20 at the upper end portion of the slide inner frame 66).
  • the gas pressure cylinder 61 is configured to generate an urging force in the extending direction. To counter the urging force of the gas pressure cylinder 61, the foot massaging device 5 is pressed forward with a user's foot or the like, By sliding the frames 65 and 66 with respect to each other and extending the back support frame 27, the foot kneading device 5 is projected forward. On the contrary, both frames 65 and 66 slide in opposite directions by the urging force when the gas pressure cylinder 61 extends, and the length of the back support frame 27 is shortened.
  • the gas pressure cylinder 61 has a fixing function that can temporarily fix the expansion / contraction amount. By using the fixing function, the positional relationship between the slide outer frame 65 and the slide inner frame 66, that is, the foot The degree of forward protrusion of the kneading device 5 can be stopped at an arbitrary position.
  • the operation of the fixing function of the gas pressure cylinder 61 is performed by an operation handle provided around the seat 2 and a wire connected from the operation handle to the gas pressure cylinder 61.
  • the operation of the advance / retreat mechanism 15 configured as described above will be described.
  • the foot kneading device 5 is in a storage position P below the seat 2.
  • the bottom surface of the foot massage device 5 is directed forward, the front surface (the surface provided with the holding grooves 10 and 10 into which the user's lower limbs are fitted) is directed upward, and the bottom surface is the front end of the seat portion 2. It is almost flush with the part.
  • the electric motor 35 of the swing drive unit 21 is operated, the expansion / contraction mechanism 36 starts to expand.
  • the pivot of the stationary support portion 32 starts to rotate at the front end portion (bracket member 38) of the expansion / contraction mechanism 36, with the vertical flange portion 6a of the leg frame 6 connected to the rear end portion of the expansion / contraction mechanism 36 as a support. become.
  • the link 20 has the movable pivot 33 swinging forward with the stationary pivot 32 as a fulcrum.
  • the foot kneading device 5 moves smoothly.
  • the link 20 swings further forward, the upper part of the back of the foot massaging device 5 starts to rise as shown in FIGS. And if the back upper part of the foot kneading apparatus 5 comes out ahead of the front end lower part of the seat part 2, and the foot kneading apparatus 5 comes to rise as a whole as shown in FIG. Has reached the use position U.
  • the foot massaging device 5 that has reached the use position U has a back surface facing the floor surface F, the bottom surface facing forward, and a front surface that massages the lower limbs (corresponding to the groove bottoms in the left and right holding grooves 10, 10). It is in a state of facing upward while being connected in a horizontal state or a front-down bent state (see FIG. 2) substantially flush with the upper surface of the portion 2. If the user operates the lower limb massage mechanism with one foot inserted into the left and right holding grooves 10, 10 with respect to the foot massage device 5, the user can comfortably receive massage. Further, at this time, the foot massaging device 5 ascends as a whole, so that the user can take a relaxed posture such as throwing his legs forward, and it is not necessary to bend the knees extremely, so the feeling of use is improved. It can be enhanced.
  • the pivot of the stationary support portion 32 rotates in the reverse direction with the front end portion (bracket member 38) of the expansion / contraction mechanism 36, with the vertical flange portion 6a of the leg frame 6 connected to the rear end portion of the expansion / contraction mechanism 36 as a support.
  • the link 20 has the movable pivot 33 swinging backward with the stationary pivot 32 as a fulcrum. As a result, as shown in FIG. 9 ⁇ FIG. As a whole, it descends and its upper front part sinks downward. As shown in FIG. 7, when the upper back portion is lowered until the front upper portion of the foot kneading device 5 becomes lower than the lower portion of the seat portion 2, the foot kneading device 5 moves backward with the lower portion of the seat portion 2 facing backward. At this time, since the rolling wheels 22 roll on the floor F, the foot kneading device 5 moves smoothly. Then, as shown in FIG. 6, the foot kneading device 5 is returned to the state stored in the storage position P. A series of these operations is the retreat operation of the advance / retreat mechanism 15.
  • the bottom surface thereof faces forward and does not protrude from the front end portion of the seat portion 2, so that the “user who does not receive a massage” sitting on the massage chair 1 is comfortable.
  • the body posture can be maintained and the appearance of the massage chair 1 is simple and refreshing.
  • a sensor such as a limit switch is provided on the upper surface of the seat portion 2 or the holding groove 10 of the foot massage device 5 and the sensor detects the user, or the massage mechanism or the lower limb massage mechanism is It is preferable that the execution of the retreating operation is ignored when there is an operation for causing the advance / retreat mechanism 15 to perform the retreating operation during the operation. By adopting such a configuration, it is possible to reliably prevent an unfavorable situation such as hurting the user's lower limb.
  • a sensor such as a limit switch is provided on the back support frame 27, the gas pressure cylinder 61, or the like of the foot gripping device 5, and this sensor detects the forward protrusion state of the foot gripping device 5.
  • a sensor such as a limit switch is provided on the back support frame 27, the gas pressure cylinder 61, or the like of the foot gripping device 5, and this sensor detects the forward protrusion state of the foot gripping device 5.
  • the stationary pivot part 32 is provided as a pair (that is, two places) on both the left and right sides of the seat part 2, and the movable pivot part 33 is also provided as a pair (that is, two places) on both the left and right sides of the foot massage device 5.
  • a pair of left and right (that is, two) links 20 may be used so as to connect the left stationary pivot 32 and the movable pivot 33 and the right stationary pivot 32 and the movable pivot 33, respectively.
  • the link 20 is not limited to the C-type in a side view, and can be formed as a straight line.
  • the swing drive unit 21 can be configured to operate a gear mechanism with an electric motor and thereby swing the link 20 back and forth.
  • the rotation angle limiting member 50 is not limited to a pin-like object, and its attachment position, engagement partner, and the like are not limited. That is, any structure may be used as long as it forms an engagement structure for floating from the floor surface F while maintaining the foot massaging device 5 at the predetermined angle ⁇ while the link 20 swings forward.
  • [Second Embodiment] 13 and 14 show a second embodiment of the massage chair according to the present invention.
  • the present embodiment differs from the first embodiment in that it is installed in place of the rotation angle limiting member 50 provided at the connecting portion between the moving pivot 33 and the link 20 provided at the upper back of the foot kneading device 5.
  • the link 50Z (extrusion link) is provided.
  • the advance / retreat mechanism 15 includes a link 20, a swing drive unit 21, rolling wheels 22, and a construction link 50 ⁇ / b> Z (extrusion link).
  • the foot massaging device 5 is supported by the moving frame 28 in which the bottom support frame 26 and the back support frame 27 are assembled so as to exhibit an L shape in a side view so that the rigidity of the entire device is maintained.
  • the back support frame 27 has a configuration in which a slide outer frame 65 (downward slide frame) and a slide inner frame 66 (upper slide frame) are slidably combined with each other.
  • the bottom support frame 26 is coupled to the distal end of the slide outer frame 65, and the base end side (upper end side) of the slide inner frame 66 is connected to the link 20.
  • the link 20 includes a stationary pivot portion 32 provided at the lower portion of the seat portion 2 (upper side in the leg frame 6) and a movable pivot portion 33 provided at the upper rear portion of the foot massage device 5 (upper end portion of the slide inner frame 66). It is connected between.
  • the stationary pivot portion 32 and the movable pivot portion 33 are configured to hold the link 20 so as to be relatively rotatable around a pivot axis whose axis is directed in the left-right direction. Therefore, from the viewpoint that the foot massaging device 5 operates with respect to the seat portion 2, the link 20 is configured such that the movable pivot portion 33 is swingable in the front-rear direction with the stationary pivot portion 32 as a fulcrum. is there.
  • the stationary pivot part 32 is provided at the center part in the left-right direction of the seat part 2
  • the movable pivot part 33 is provided at the center part in the left-right direction of the foot massage device 5. Accordingly, the link 20 that connects the stationary pivot portion 32 and the movable pivot portion 33 is formed by only one.
  • the link 20 is formed in a highly rigid frame shape by connecting two link-composing rods 34 in parallel in the left-right direction at a predetermined interval and connecting them together.
  • the number of the link configuration rods 34 is not particularly limited, but a single link 20 is provided as a structure in which the entirety is assembled in a frame shape. That is, the link 20 is composed of a single bar member.
  • the link 20 is formed in a shape that curves in a side view C-shape. That is, in the state where the foot kneading device 5 is in the storage position P below the seat portion 2, the link 20 is once extended backward from the stationary pivot portion 32, and then the front of the foot kneading device 5. The U-turn is turned downward so as to go around from the upper part to the upper part of the back surface via the top part, and after that, further extends forward and then reaches the movable pivot part 33.
  • the link 20 When considering a virtual circle D having a maximum radius R as a straight line connected from the axial center of the stationary pivot 32 to the floor surface F, the link 20 is within the range of the virtual circle D around the stationary pivot 32. It is formed in a size that fits all. Therefore, even if the link 20 swings back and forth around the stationary pivot 32, the link 20 does not contact the floor surface F.
  • the link 20 is on the rear side of the movable swing range when the foot kneading device 5 is located at the storage position P, and the front side of the movable swing range when the foot kneading device 5 is located at the use position U (FIG. 14). Swing back and forth as follows.
  • the movable swing range refers to a region where the link 20 swings when the foot massaging device 5 moves between the storage position P and the use position U.
  • the erection link 50 ⁇ / b> Z is between a base pivot part 51 provided at an intermediate part of the link 20 and a front pivot part 52 provided on the back surface part (specifically, the upper side of the slide outer frame 65) of the foot massaging device 5. It is pivotally connected. Therefore, when the link 20 is in the process of swinging forward with the stationary pivot 32 as a fulcrum, and the movable pivot 33 exceeds the bottom dead center, the erection link 50Z is based on the base pivot 51, The slide outer frame 65 is slid so as to be pushed against the slide inner frame 66 (in other words, the back support frame 27 is extended), and the foot massaging device 5 is projected forward. Thereafter, the back support frame 27 reaches the allowable extension amount and does not extend any more, and the rolling wheel 22 (in short, the entire leg massaging device 5) floats above the floor surface F.
  • the front surface of the foot kneading device 5 is in a horizontal state (including some steps) substantially flush with the upper surface of the seat portion 2, or is bent forward and downward.
  • the swing drive unit 21 applies a driving force for swinging back and forth with respect to the link 20.
  • the swing drive unit 21 is provided with an expansion / contraction mechanism 36 that performs an expansion / contraction operation using the electric motor 35 as a drive source.
  • the expansion / contraction mechanism 36 for example, a mechanism using a screw shaft (such as a ball screw) or a combination mechanism of a rack and a pinion gear can be employed.
  • a bracket member 38 is provided on a pivot (rotating integrally with the link 20) that rotatably holds the rear end of the link 20 in the stationary pivot support 32 so as to rotate integrally therewith.
  • the front end portion of the expansion / contraction mechanism 36 is connected to the bracket member 38 so as to be relatively rotatable.
  • the rear end portion of the telescopic mechanism 36 is rotatably connected to the vertical flange portion 6 a of the leg frame 6.
  • the operation of the advance / retreat mechanism 15 configured as described above will be described.
  • the foot massaging device 5 is in the storage position P below the seat 2.
  • the bottom surface of the foot massage device 5 is directed forward, the front surface (the surface provided with the holding grooves 10 and 10 into which the user's lower limbs are fitted) is directed upward, and the bottom surface is the front end of the seat portion 2. It is almost flush with the part.
  • the electric motor 35 of the swing drive unit 21 is operated, the expansion / contraction mechanism 36 starts to expand.
  • the pivot of the stationary support portion 32 starts to rotate at the front end portion (bracket member 38) of the expansion / contraction mechanism 36, with the vertical flange portion 6a of the leg frame 6 connected to the rear end portion of the expansion / contraction mechanism 36 as a support. become.
  • the moving pivot 33 is swung forward with the stationary pivot 32 as a fulcrum, and as a result, the foot massaging device 5 advances its upper back part forward. .
  • the foot massaging device 5 advances its upper back part forward.
  • the foot massaging device 5 moves smoothly.
  • the link 20 swings further forward, the upper part of the back of the foot massaging device 5 starts to rise.
  • the back upper part of the foot kneading device 5 protrudes forward from the lower front end portion of the seat 2, and the foot kneading device 5 rises as a whole while protruding forward, as shown in FIG.
  • the kneading device 5 has reached the use position U.
  • the foot massage device 5 that has reached the use position U is in a horizontal state or a front-down direction in which the bottom surface faces the floor surface F, the bottom surface faces forward, and the front surface that massages the lower limbs is substantially flush with the upper surface of the seat 2. It is in a state of facing upwards while continuing in a bent state. If the user operates the lower limb massage mechanism with one foot inserted into the left and right holding grooves 10, 10 with respect to the foot massage device 5, the user can comfortably receive massage. At this time, the foot massaging device 5 ascends as a whole and protrudes forward, so that the user can take a relaxed posture such as throwing the foot forward, and there is no need to bend the knee extremely. , To improve the feeling of use.
  • the link 20 is configured such that the movable pivot 33 swings backward with the stationary pivot 32 as a fulcrum, and, as a result, the foot massaging device 5 as a whole projects the portion protruding forward to the rear. It descends while retreating, and it further sinks the front upper part downward.
  • the foot kneading apparatus 5 moves backward with the lower part of the seat part 2 directed rearward. At this time, since the rolling wheels 22 roll on the floor F, the foot kneading device 5 moves smoothly.
  • FIG. 15 and 16 show a third embodiment of the massage chair according to the present invention. This embodiment is different from the first embodiment in that the advance / retreat mechanism 15 is provided with a connection / disconnection mechanism 120 and a buffer mechanism 150 that temporarily disconnects the interlocking state between the telescopic mechanism 36 and the electric motor 35 (drive source). It is in the point.
  • the oscillating drive unit 21 applies a driving force for oscillating back and forth with respect to the link 20.
  • the oscillating drive unit 21 includes an extension mechanism 36 that extends and contracts using the electric motor 35 as a drive source. It is as a thing.
  • the swing drive unit 21 is for applying a driving force for swinging back and forth to the link 20, and includes an electric motor 35 and a telescopic mechanism 36 that extends and contracts using the electric motor 35 as a drive source.
  • the advance / retreat mechanism 15 is provided with a connection / disconnection mechanism 120 that temporarily disconnects the interlocking state between the telescopic mechanism 36 and the electric motor 35 (drive source), and a buffer mechanism 150.
  • FIGS. 15 and 16 show a cross section of the swing drive unit 21.
  • a buffer mechanism 150 is provided in the swing drive unit 21.
  • the left and right in FIGS. 15 and 16 are referred to as front and rear.
  • FIG. 15 shows a situation in which the power generated by the electric motor 35 expands and contracts the expansion / contraction mechanism 36 and the foot kneading device 5 moves.
  • FIG. 16 shows a situation in which the power transmission to the expansion / contraction mechanism 36 is interrupted by the connection / disconnection mechanism 120 and the foot kneading device 5 is not moved (the foot kneading device 5 can be freely advanced and retracted). .
  • FIGS. 15 shows a situation in which the power generated by the electric motor 35 expands and contracts the expansion / contraction mechanism 36 and the foot kneading device 5 moves.
  • FIG. 16 shows a situation in which the power transmission to the expansion / contraction mechanism 36 is interrupted by the connection / disconnection mechanism 120 and the foot kn
  • the expansion / contraction mechanism 36 of the swing drive unit 21 is in the same direction as the outer cylinder 110 formed in a cylindrical shape along the expansion / contraction operation direction (front / rear direction).
  • the propulsion shaft 100 is formed in a cylindrical shape along the direction) and inserted into the outer cylinder 110 so as to be movable in and out.
  • the expansion / contraction mechanism 36 projects (extends) the propulsion shaft 100 forward from the outer cylinder 110 when the foot kneading device 5 is set to the use position U, and retracts the propulsion shaft 100 when the foot kneading device 5 is set to the storage position P. Thus, it is stored (contracted) in the outer cylinder 110.
  • the outer cylinder 110 houses a screw shaft 112 having a thread groove formed on the outer peripheral surface thereof, and the screw shaft 112 is connected to a rotating shaft of an electric motor 35 as a drive source via a worm gear.
  • a moving element 114 having a through hole and having a thread groove formed on the inner surface thereof is screwed onto the screw shaft 112.
  • the outer shape of the moving element 114 is a truncated cone shape that is tapered toward the propulsion shaft 100 side, and is configured to be divided into two vertically.
  • a cylindrical cap body 106 is fitted on the rear end side of the propulsion shaft 100.
  • a concave portion (tapered conical surface concave portion) 121 having a tapered tapered conical surface into which the conical surface of the moving element 114 is fitted (having the same taper angle) is formed at the central portion in the radial direction of the cap body 106. That is, the conical surface of the movable element 114 is fitted in the concave portion 121 of the cap body 106, and the wedge body is in a wedge state. That is, the cap body 106 is a wedge member.
  • a lid member 122 is provided on the rear end side (electric motor 35 side) of the cap body 106, and the tapered conical surface recess 121 is closed by the lid member 122 by the lid member 122.
  • a coil spring 116 for biasing the cap body 106 toward the mover 114 is provided between the rear end side (the electric motor 35 side) of the mover 114 and the cap body 106 (lid member 122). . That is, the coil spring 116 is pressed and compressed by the lid member 122, and the cap body 106 to which the lid member 122 is attached is pushed into the moving element 114 (rearward side) with a constant force. A “wedge effect” between the moving element 114 and the cap body 106 is generated.
  • the tapered conical surface recess 121 of the cap body 106 comes into contact with the outer peripheral surface of the movable element 114 by the force of the coil spring 116, and the movable element 114 that can be divided by the wedge action is pressed and integrated in the radial direction.
  • the screwed state between the moving element 114 and the screw shaft 112 is maintained.
  • connection cutting mechanism 120 is composed of the moving element 114, the tapered conical surface recess 121 of the cap body 106, the coil spring 116, and the like described above.
  • This connection cutting mechanism 120 is not limited to the above-described mechanisms (screw shaft 112, moving element 114, and outer wedge 106).
  • screw shaft 112, moving element 114, and outer wedge 106 you may employ
  • the swing drive unit 21 of the advance / retreat mechanism 15 causes the propulsion shaft 100 to protrude forward from the outer cylinder 110 or retract the propulsion shaft 100 into the outer cylinder 110 as the expansion / contraction operation of the expansion / contraction mechanism 36. Or store it.
  • the advancing / retracting mechanism 15 rotates the bracket member 38 around the rotation axis of the stationary pivot 32 by this expansion / contraction operation, and integrally rotates the link 20 together with the bracket member 38 (rotation axis). 5 is moved between the use position P and the storage position U.
  • the buffer mechanism 150 has a linear damper 151 (linear damper means) provided along the propulsion shaft 100.
  • the linear damper 151 prevents the overload from being transmitted to the advancing / retreating mechanism 15 when an “overload”, which is a downward load exceeding the allowable value, is applied to the foot kneading device 5 held at the use position. It has become.
  • a specific structure of the linear damper 151 is that a coil spring 153 is housed in a cylinder of the propulsion shaft 100 formed in a cylindrical shape, and this coil spring 153 is coupled to the rear end side of the propulsion shaft 100.
  • the cap body 106 and the hinge head 155 inserted into the front end side of the propulsion shaft 100 so as to freely enter and exit are sealed in a state of being sandwiched between the front and rear.
  • the hinge head 155 is formed to be narrower than the cylindrical inner diameter of the propulsion shaft 100, but a spring receiver 156 that is equal to or slightly smaller in diameter than the cylindrical inner diameter of the propulsion shaft 100 is coupled to the rear end portion of the hinge head 155. ing. The front end of the coil spring 153 comes into contact with the spring receiver 156. Further, a sleeve body 154 through which the hinge head 155 passes but not through the spring receiver 156 is coupled to the front end side of the propulsion shaft 100, and the hinge head 155 is prevented from coming off the propulsion shaft 100 by the sleeve body 154. . A bracket member 38 is swingably connected to the hinge head 155 via a hinge shaft 157.
  • the coil spring 153 is in a state in which the cap body 106 and the hinge head 155 are stretched in opposite directions (pressing and urging state) at both ends thereof, and the compression allowance is still left in the axial direction (front-rear direction). It is supposed to be in a state. Accordingly, the linear damper 151 can shorten the distance between the cap body 106 and the hinge head 155 within a range in which the compression margin held by the coil spring 153 can be reduced. However, the compression margin remaining on the coil spring 153, that is, the state in which the cap body 106 and the hinge head 155 are stretched in opposite directions (spring force), causes the propulsion shaft 100 to project forward from the outer cylinder 110 as the expansion mechanism 36. When the foot kneading device 5 is moved from the storage position U to the use position P, it is maintained (not compressed).
  • the coil spring 153 is compressed when an overload is applied to the foot kneading device 5 when the foot kneading device 5 is in a suspended state after reaching the use position P. .
  • the operation that is, the advancing / retreating operation of the foot massage device 5 will be described.
  • the foot massaging device 5 is in the storage position P below the seat 2.
  • the bottom surface of the foot massage device 5 is directed forward, the front surface (the surface provided with the holding grooves 10 and 10 into which the user's lower limbs are fitted) is directed upward, and the bottom surface is the front end of the seat portion 2. It is almost flush with the part.
  • the expansion / contraction mechanism 36 starts to expand. Therefore, the rotation shaft of the stationary pivot 32 starts to rotate at the front end (bracket member 38) of the expansion / contraction mechanism 36, with the vertical flange 6a of the leg frame 6 connected to the rear end of the expansion / contraction mechanism 36 as a support. Will come to do.
  • the state is as shown in FIG. Accordingly, in the link 20, the moving pivot 33 is swung forward with the stationary pivot 32 as a fulcrum, and as a result, the foot massaging device 5 advances its upper back part forward. . At this time, since the rolling wheels 22 roll on the floor F, the foot kneading device 5 moves smoothly.
  • the foot massaging device 5 that has reached the use position U has a back surface facing the floor surface F, the bottom surface facing forward, and a front surface that massages the lower limbs (corresponding to the groove bottoms in the left and right holding grooves 10, 10). It is in a state of facing upward while being connected in a horizontal state or a front-down bent state substantially flush with the upper surface of the portion 2.
  • the user can comfortably receive massage. Further, at this time, the foot massaging device 5 ascends as a whole, so that the user can take a relaxed posture such as throwing his legs forward, and it is not necessary to bend the knees extremely, so the feeling of use is improved. It can be enhanced.
  • the mechanism which makes it possible to switch the foot kneading device 5 in the use position to the forward projecting state as necessary is provided, and the user feels the foot kneading device 5 cramped with respect to the length of the leg, The foot kneading device 5 may be made to protrude forward. After the foot kneading device 5 is used, the foot kneading device 5 is brought close to the seat 2.
  • the expansion / contraction mechanism 36 starts to contract.
  • the rotation shaft of the stationary pivotal support portion 32 rotates in the reverse direction at the front end portion (bracket member 38) of the expansion / contraction mechanism 36, with the vertical flange portion 6a of the leg frame 6 to which the rear end portion of the expansion / contraction mechanism 36 is connected. Will begin to move.
  • the state is as shown in FIG.
  • the link 20 is configured such that the moving pivot 33 swings backward with the stationary pivot 32 as a fulcrum, and as a result, the foot massaging device 5 is lowered as a whole, and the front upper portion thereof is moved. It will sink down.
  • the bottom surface thereof faces forward and does not protrude from the front end portion of the seat portion 2, so that the “user who does not receive a massage” sitting on the chair type massage machine 1 While maintaining an easy posture, the appearance of the chair type massage machine 1 is simple and refreshing.
  • the telescopic mechanism 36 When the telescopic mechanism 36 is contracted and there is an obstacle such as a user's lower limb between the foot massage device 5 and the seat 2, the state shown in FIG. Even if it rotates so as to retract 15, the propulsion shaft 100 does not move in the direction in which it is stored in the outer cylinder 110. Furthermore, when the advancing / retreating mechanism 15 is electrically out of order (at least when the electric motor 35 is not rotating), the foot grinder 5 is moved forward to manually move the foot grinder 5 to the use position U side. 16, the state is as shown in FIG. 16, the internal thread of the moving element 114 gets over the external thread of the screw shaft 112, and the propulsion shaft 100 moves so as to protrude from the outer cylinder 110. It is easily pulled out to the use position U side.
  • the expansion / contraction mechanism 36 is provided with a power transmission cutoff mechanism that transmits and shuts off the driving force from the electric motor 35, it is possible to eliminate the need for an electric circuit configuration. Inconvenient situations such as hurting the lower limbs can be surely prevented. Further, even if an electrical failure occurs, the foot massage device 5 can be easily pulled out to the use position U side. And when holding the foot massage device 5 in the use position (when floating in the air), for example, a child rides on the foot massage device 5 with mischief, or an adult sits carelessly, Or suppose that something happened, such as putting luggage. At this time, the foot massaging device 5 is overloaded.
  • the link 20 provided between the foot massaging device 5 and the advancing / retracting mechanism 15 has a pivoting action such that the bracket member 38 is pushed back with the pivoting shaft of the stationary pivotal support 32 as a fulcrum. (See the white arrow Y in FIG. 15).
  • the hinge head 155 of the propulsion shaft 100 is pushed backward, and the linear damper 151 provided on the propulsion shaft 100 compresses the coil spring 153. .
  • the overload is prevented from being directly transmitted to the advance / retreat mechanism 15, and the portion supporting the foot massaging device 5 and the advance / retreat mechanism 15 are prevented from being damaged or broken by the overload. Will be able to.
  • FIG. 17 shows a fourth embodiment of the chair type massage machine according to the present invention.
  • the rotation shaft 170 provided so as to be rotatable with the axial center directed in the left-right direction with respect to the stationary pivot support portion 32 on the seat portion 2 side includes the input shaft 170a and the input shaft 170a.
  • the connecting shaft structure has an output shaft 170b that is coaxial with the shaft 170a and is faced in a relatively rotatable state.
  • shaft 170 is made into the structure rotated integrally with the input shaft 170a, and makes the foot massage apparatus 5 the use position P. It is assumed that the link 20 that is moved between the storage position U and the output shaft 170b rotates together.
  • the buffer mechanism 150 increases the torsional pressure by elastic deformation around the connecting portion of the input shaft 170a and the output shaft 170b with respect to the rotation shaft 170 of the stationary pivot support portion 32, or based on this torsional pressure.
  • Rotating damper 171 (rotating damper means) that returns to the above is configured.
  • a coil spring 173 that connects the input shaft 170 a and the output shaft 170 b of the rotary shaft 170 is provided.
  • the coil spring 173 is coaxially disposed so as to be wound around the outer side of the rotating shaft 170.
  • One end of the coil spring 173 is connected to the input shaft 170a, and the other end of the coil spring 173 is connected to the output shaft 170b. They are connected so that the rotational force of the input shaft 170a can be transmitted to the output shaft 170b.
  • the buffer mechanism 150 when the foot kneading device 5 is held at the use position (when it is suspended in the air), for example, a child rides on the foot kneading device 5 in a mischief or carelessly an adult. Suppose something happens to sit down or leave a baggage. At this time, the foot massaging device 5 is overloaded. Then, the link constituting rod 34 swings downward around the output shaft 170b, and the output shaft 170b rotates counterclockwise when viewed from the right side of FIG. However, this rotation is absorbed by the torsional elastic deformation of the rotation damper 171 and is not transmitted directly to the input shaft 170a. As a result, the overload is buffered and is not transmitted to the advance / retreat mechanism 15, so that it is possible to prevent the portion supporting the foot gripping device 5 and the advance / retreat mechanism 15 from being damaged or broken due to the overload. Become.
  • the rotating damper 171 employed in the fourth embodiment can have a torsional damper structure using oil pressure, air pressure, or the like, instead of using the coil spring 173. It should be thought that embodiment disclosed this time is an illustration and restrictive at no points. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.
  • the present invention can be applied to a foot massage device attached to a massage chair, and can also be applied to a sofa or a vehicle seat.

Landscapes

  • Massaging Devices (AREA)

Abstract

Disclosed is a massage chair which comprises a seat, a backrest and a foot massaging device disposed in front of the seat, and which can be more simplified in structure and reduced in weight and cost at once.  The massage chair, when the foot massaging device is used, enables the user to take a relaxing posture outstretching the feet forward.  The massage chair is provided with a back-and-forth mechanism (15) connected to a foot massaging device (5) under a seat (2).  When the back-and-forth mechanism (15) moves forward, the foot massaging device (5) floats from the floor into the air in front of the seat (2) and advances to a using position (U), at which the lower limbs of the user can be massaged.  When the back-and-forth mechanism (15) moves backward, the foot massaging device (5) is housed in at a housing position (P) formed below the seat (2).  At the connected portion between the foot massaging device (5) and a link (20) connected to the foot massaging device (5) as to rock same forward and backward, moreover, a turning-angle restricting member (50) and an erection link (50Z) are disposed to prevent the angle between the link (20) and the foot massaging device (5) from becoming a predetermined angle (θ) or smaller.

Description

足揉み装置を備えたマッサージ椅子Massage chair with foot massage device
 本発明は、足揉み装置を備えたマッサージ椅子に関する。 The present invention relates to a massage chair provided with a foot massage device.
 足揉み装置が備えられたマッサージ椅子としては、例えば、特許文献1に開示されたものがある。
 このマッサージ椅子は、座部の後部に背もたれ部、前部に足揉み装置をそれぞれ有しており、背もたれ部には使用者の背部をマッサージするマッサージ機構が備えられ、足揉み装置には、使用者の下肢をマッサージする下肢マッサージ機構が内蔵されている。また、背もたれ部は前後にリクライニング可能とされ、足揉み装置は支持部材を介して座部の前方に揺動可能に設けられている。
As a massage chair provided with a foot massage device, for example, there is one disclosed in Patent Document 1.
This massage chair has a backrest part at the back of the seat part and a foot massage device at the front part, and the backrest part is equipped with a massage mechanism that massages the user's back part. It has a built-in lower limb massage mechanism that massages the lower limbs of a person. Further, the backrest portion can be reclined back and forth, and the footpad device is swingably provided in front of the seat portion via a support member.
 このようなマッサージ椅子は、マッサージを行うために利用されるだけでなく、単なる椅子として利用されることも多い。特に、この種のマッサージ椅子では、座部等に柔らかいクッションを内蔵している場合が多く、また、背もたれ部にリクライニング機能を有していることからソファとしての利用にも適したものとなっている。
 しかしながら、特許文献1の足揉み装置については、その正面に保持溝を形成したものとなっているため、マッサージ機能を使わない場合でも保持溝に下肢を嵌め込まなければならず、これによって足の自由な動きが制限され、楽な体勢をとることが困難となっていた。また、椅子の見栄えを損ねる一因ともなっていた。
Such a massage chair is not only used for performing a massage but also often used as a mere chair. In particular, this type of massage chair often has a soft cushion built into the seat, etc., and since the backrest has a reclining function, it is suitable for use as a sofa. Yes.
However, the foot massage device of Patent Document 1 has a holding groove formed on the front surface thereof, so that even if the massage function is not used, the lower limb must be fitted into the holding groove, thereby freeing the foot. Movement was restricted and it was difficult to have a comfortable posture. It also contributed to the loss of the appearance of the chair.
 そこで、このような不都合を回避すべく、特許文献2のような技術を本願出願人は既に開発している。
 このマッサージ椅子は、足揉み装置を使用位置と座部の下方に位置する内蔵位置とに移動可能な押引機構を有しており、この押引機構は、マッサージ椅子の両側に設置されているガイドレール、ガイドレールに沿って出入りする押引ロッド、押引ロッドに連結されたキャリッジ板を有し、このキャリッジ板に足揉み装置がピン接続されている。
 そのため、足揉み装置を使用位置に位置させた上で、足揉み装置の正面(マッサージ面)と後面(フットレスト面)とを回転切換自在としている。
Therefore, in order to avoid such inconvenience, the applicant of the present application has already developed a technique such as Patent Document 2.
This massage chair has a push-pull mechanism that can move the foot massage device between a use position and a built-in position below the seat, and the push-pull mechanism is installed on both sides of the massage chair. A guide rail, a push / pull rod that moves in and out along the guide rail, and a carriage plate coupled to the push / pull rod are connected to the foot plate by a pin.
Therefore, after the foot massage device is located at the use position, the front (massage surface) and the rear surface (foot rest surface) of the foot massage device can be freely switched.
特開2002-238963号公報JP 2002-238963 A 特開2007-75590号公報JP 2007-75590 A
 しかしながらガイドレールを採用した構成は、ガイドレールに滑らかな曲がりを形成させる点で高精度と慎重な加工が要求されるものであり、製作コストの抑制が難しいという一面を具備していた。
 また、ガイドレールに対して摺動抵抗生が発生することに伴い、強力な駆動が必要であり、その反面で駆動音や振動を抑える工夫が必要であるといったことから、構造的、重量的にも負担が増えるなど、改善の余地が見られた。
 なお、他のニーズとして、足揉み装置を使用するに際し、使用者が足を前方へ投げ出すようなリラックスした姿勢(なるべく膝を伸ばした姿勢)をとりたいというものがあった。
However, the configuration employing the guide rail requires high precision and careful processing in that a smooth bend is formed on the guide rail, and has a feature that it is difficult to reduce the manufacturing cost.
In addition, due to the occurrence of sliding resistance against the guide rail, strong driving is required, but on the other hand, it is necessary to devise measures to suppress driving noise and vibration. There was room for improvement, such as increasing the burden.
As another need, when using a foot massage device, there is a desire to take a relaxed posture (a posture with the knee extended as much as possible) such that the user throws the foot forward.
 そこで、本発明は、上記問題点に鑑み、構造の一層の簡潔化、軽量化、低コスト化などを一気に解決できるようにしたマッサージ椅子を提供することを目的とする。加えて、本発明は、足揉み装置を使用するに際し、使用者が足を前方へ伸ばすようなリラックスした姿勢を取れるようにして、使用感を高められるようにしたマッサージ椅子を提供することを目的とする。
 また一方で、特許文献2に記載の椅子型マッサージ機では、足揉み装置は、座部の前方で且つ使用者の下肢をマッサージ可能な位置である「使用位置」と、座部の下方に形成された「収納位置」との間を移動するようになっている。
SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a massage chair that can solve the simplification, weight reduction, and cost reduction of the structure at once. In addition, an object of the present invention is to provide a massage chair in which a user can take a relaxed posture such as extending his / her legs forward when using a foot massage device, thereby enhancing the feeling of use. And
On the other hand, in the chair type massage machine described in Patent Document 2, the foot massage device is formed in front of the seat and at the “use position” where the user's lower limb can be massaged, and below the seat. The “storage position” is moved between.
 最近では、足揉み時のリラックス感を高めるために、使用位置において足揉み装置を床面から上昇させ、宙に浮かせるようにすることが提案されるようになっている。この場合、足揉み装置を使用位置に保持させておくとき(宙に浮かせておくとき)に、この足揉み装置の上に子供がいたずらで乗ったり、不注意で大人が腰掛けたり、或いは荷物を置いたりすることを予測しておく必要がある。
 すなわち、足揉み装置に対して「過荷重」、すなわち座部に着座した使用者が足揉み装置上へ下肢を預け置いた場合に、当該足揉み装置に作用する荷重を許容荷重とするとき、それを遙かに越えるような荷重が負荷するおそれがある。このようになると、足揉み装置を支持している部分や押引機構などが破損したり、押引機構が故障したりすることがある。
Recently, in order to enhance a feeling of relaxation when the foot is cramped, it has been proposed to lift the foot grinder from the floor surface at the position of use and to float in the air. In this case, when the foot massage device is held in the use position (when it is suspended in the air), a child may get on the foot massage device inadvertently, an adult may inadvertently sit down, or carry luggage. It is necessary to predict that it will be placed.
That is, when an overload is applied to the foot massage device, that is, when a user sitting on the seat deposits the lower limb on the foot massage device, the load acting on the foot massage device is an allowable load. There is a risk of a load that far exceeds that. In such a case, the part supporting the foot massaging device, the push / pull mechanism, or the like may be damaged, or the push / pull mechanism may be broken.
 そこで、本発明は、上記問題点に鑑み、足揉み装置が使用位置に保持されている際(宙に浮いているとき)に、足揉み装置に対して許容を越える下向き荷重が負荷したとしても破損や故障に至らないように構成されている椅子型マッサージ機を提供することも目的とする。 Therefore, in view of the above problems, the present invention may be applied even when a downward load exceeding an allowable amount is applied to the foot kneading device when the foot kneading device is held at the use position (when floating). It is another object of the present invention to provide a chair type massage machine configured so as not to be damaged or broken.
 前記目的を達成するため、本発明においては以下の技術的手段を講じた。
 すなわち、本発明に係る足揉み装置を備えたマッサージ椅子は、座部と該座部の後部に設けられた背もたれ部と前記座部の前部に設置された足揉み装置とを有するマッサージ椅子において、前記座部の下方に足揉み装置と連接する進退機構が設けられ、前記進退機構が前方に進出動作すると、足揉み装置は座部の前方で床面の上方に浮き上がり且つ使用者の下肢をマッサージ可能な位置である使用位置に進み、前記進退機構が後方に退行動作すると、足揉み装置は座部の下方に形成された収納位置に収納されることを特徴とする。
In order to achieve the above object, the present invention takes the following technical means.
That is, the massage chair provided with the foot massage device according to the present invention is a massage chair having a seat portion, a backrest portion provided at the rear portion of the seat portion, and a foot massage device installed at the front portion of the seat portion. When the advancing / retreating mechanism is provided below the seat portion and connected to the footrest device, and the advancing / retreating mechanism moves forward, the footgrip device floats above the floor surface in front of the seat portion and lifts the user's lower limb. When the advancing / retreating mechanism moves backward, the foot massaging device is housed in a housing position formed below the seat portion when it moves to a use position that is a massageable position.
 詳しくは、前記使用位置にある足揉み装置は、その背面が床面と対面し且つ底面が前方を向く状態となっており、前記収納位置にある足揉み装置は、その底面が前方を向くと共に座部の前端部と略面一となり下肢をマッサージする正面が上方を向く状態となっている。
 前記進退機構は、収納位置にある足揉み装置の背面上部を座部の前端よりも前方へ前進させた後又は前進させる途中に上昇させることで足揉み装置を使用位置へ至らせる進出動作と、使用位置にある足揉み装置の正面上部が座部下方より低くなるまで前記背面上部を下降させた後に座部下方へ退行させることで足揉み装置を収納位置に戻す退行動作と、を行う構成にすることができる。
Specifically, the foot grinder in the use position has a back surface facing the floor and a bottom surface facing forward, and the foot grinder in the storage position has a bottom surface facing forward. It is in a state where it is substantially flush with the front end of the seat and the front of the lower limb is massaged upward.
The advancing and retreating mechanism is an advance operation for bringing the foot grinder to the use position by raising the back upper part of the foot grinder in the storage position forward from the front end of the seat or in the middle of the advance. It is configured to perform a retreat operation for returning the foot grinder to the storage position by lowering the back upper portion until the front upper portion of the foot grinder in the use position is lower than the seat lower portion, and then retreating downward to the seat portion. can do.
 具体的に、前記進退機構は、座部の下部に設けられる定置枢支部と足揉み装置の背面上部に設けられる移動枢支部との間に連結されて定置枢支部を支点に移動枢支部を前後揺動自在に保持するリンクと、このリンクに対して前後揺動の駆動力を付与する揺動駆動部と、足揉み装置の背面下端に設けられて床面上を移動自在に保持された転動輪と、を有しており、前記リンクが当該リンクの揺動域の後方側へ揺動すると足揉み装置が収納位置に移動し、前記リンクが当該リンクの揺動域の前方側へ揺動すると足揉み装置が使用位置に移動するように構成することが可能である。 Specifically, the advancing / retreating mechanism is connected between a stationary pivot provided at the lower portion of the seat and a movable pivot provided at the upper back of the foot grinder so that the movable pivot is moved forward and backward with the stationary pivot as a fulcrum. A link that is swingably held, a swing drive unit that applies a driving force for swinging back and forth with respect to the link, and a roll that is provided at the lower back end of the foot grinder so as to be movable on the floor. When the link swings to the rear side of the swinging area of the link, the foot grinder moves to the storage position, and the link swings to the front side of the swinging area of the link. Then, it is possible to configure the foot massage device to move to the use position.
 前記足揉み装置の移動枢支部と前記リンクとの連結部には、リンクと足揉み装置との角度が所定角度以下にならないようにする回動角制限部材が設けられており、前記所定角度を、前記足揉み装置の使用位置において当該足揉み装置が床面に非接触となるための角度に設定するとよい。
 例えば、前記回動角制限部材は、足揉み装置の移動枢支部とリンクとを回動自在に連結している回動軸心に平行なピン部材であって、前記ピン部材はリンクと移動枢支部とで挟み込まれ可能なように、リンク及び/又は移動枢支部に配設されているとよい。
A rotation angle limiting member for preventing an angle between the link and the foot massage device from being equal to or less than a predetermined angle is provided at a connecting portion between the moving pivot portion of the foot massage device and the link. It is preferable that the angle is set so that the foot massaging device is not in contact with the floor surface at the use position of the foot massaging device.
For example, the rotation angle limiting member is a pin member that is parallel to a rotation axis that rotatably connects the movement pivot support portion of the foot massage device and the link, and the pin member is a link and a movement pivot. It is good to arrange | position at a link and / or a mobile pivot so that it may be pinched | interposed with a branch.
 この場合、前記リンクは、座部の左右方向中央部に設けられる定置枢支部と足揉み装置の左右方向中央部に設けられる移動枢支部とを連結する単一部材で形成されたものとするのが好適である。
 また更に、前記リンクは、前記足揉み装置が収納位置に位置する際に、足揉み装置の正面上部から頂部に沿うような側面視C型にカーブする形状に形成されたものとするのが好ましい。
 前記進退機構の揺動駆動部は、電動モータ駆動の伸縮機構を有したものとすることができる。
In this case, it is assumed that the link is formed of a single member that connects a stationary pivot portion provided at the center portion in the left-right direction of the seat portion and a movable pivot portion provided at the center portion in the left-right direction of the foot massage device. Is preferred.
Furthermore, it is preferable that the link is formed in a shape that curves in a C-shaped side view along the top from the front upper part of the foot gripping device when the foot gripping device is located at the storage position. .
The swing drive part of the advance / retreat mechanism may have an expansion / contraction mechanism driven by an electric motor.
 前記進退機構は、使用位置にある足揉み装置を浮上状態のまま前方へ突出可能とする前方突出機構を有したものとすることができる。
 具体的に、前記前方突出機構は、足揉み装置を前後方向にスライド自在とするスライド機構を前記リンクの前端部に有し、前記スライド機構には、足揉み装置を後方に付勢する付勢部材が備えられているとよい。
 また好ましくは、前記進退機構は、座部の下部に設けられる定置枢支部と足揉み装置の背面上部に設けられる移動枢支部との間に連結されて定置枢支部を支点に移動枢支部を前後揺動自在に保持するリンクと、このリンクに対して前後揺動の駆動力を付与する揺動駆動部と、足揉み装置の背面下端に設けられて床面上を移動自在に保持された転動輪と、前記リンクの中間部と足揉み装置の背面部との間に架け渡されると共に前記リンク及び足揉み装置の背面部に対して回動自在で且つ足揉み装置の背面に沿ってスライド自在となっている架設リンクと、を有しており、前記リンクが当該リンクの揺動域の後方側へ揺動すると足揉み装置が収納位置に移動し、前記リンクが当該リンクの揺動域の前方側へ揺動すると足揉み装置が使用位置に移動するように構成されているとよい。
The advancing / retracting mechanism may include a forward projecting mechanism that allows the foot kneading device in the use position to project forward while being in a floating state.
Specifically, the forward projecting mechanism has a slide mechanism at the front end portion of the link that allows the foot gripping device to slide in the front-rear direction, and the slide mechanism biases the foot gripping device backward. A member may be provided.
Preferably, the advancing / retreating mechanism is connected between a stationary pivot provided at a lower portion of the seat and a movable pivot provided at an upper rear portion of the foot grinder so that the movable pivot is moved forward and backward with the stationary pivot as a fulcrum. A link that is swingably held, a swing drive unit that applies a driving force for swinging back and forth with respect to the link, and a roll that is provided at the lower back end of the foot grinder so as to be movable on the floor. It is spanned between the driving wheel, the intermediate part of the link and the back part of the foot-greasing device, and is rotatable with respect to the link and the rear part of the foot-gripping device and slidable along the back surface of the foot-gear device. And when the link swings to the rear side of the swinging area of the link, the foot grinder moves to the storage position, and the link moves to the swinging area of the link. Swing forward, the foot grinder moves to the use position It may is configured so that.
 さらに、前記足揉み装置の背面部には、互いにスライド自在となっている下方スライド枠と上方スライド枠とからなる背面支持枠が設けられ、前記下方スライド枠に足揉み装置が取り付けられると共に、前記架設リンクが回動自在に連結し、前記上方スライド枠の上端部に移動枢支部が設けられ前記リンクの先端部が揺動自在に連結されているとよい。
 特に好ましくは、前述の椅子型マッサージ機において、前記進退機構又は足揉み装置と進退機構とを連結する部分には、使用位置で保持された足揉み装置に許容を越える下向き荷重である過荷重が付与された際に、当該過荷重が進退機構に伝達するのを防ぐための緩衝機構が設けられているとよい。
Furthermore, a back support frame comprising a lower slide frame and an upper slide frame that are slidable with each other is provided on the back surface portion of the foot massage device, and the foot massage device is attached to the lower slide frame. It is preferable that the erection link is pivotably connected, a moving support portion is provided at the upper end portion of the upper slide frame, and the tip end portion of the link is swingably connected.
Particularly preferably, in the above-described chair type massage machine, an overload that is a downward load that exceeds an allowable amount is applied to a portion that connects the advance / retreat mechanism or the foot massage device and the advance / retreat mechanism. It is preferable that a buffer mechanism is provided for preventing the overload from being transmitted to the advance / retreat mechanism when applied.
 前記進退機構は、軸心を前後方向へ向けて前後動する推進軸を有し、当該推進軸の前後動で足揉み装置を使用位置と収納位置との間で移動可能になっており、前記緩衝機構は、前記推進軸に設けられて過荷重を吸収する直線ダンパ手段を有するとよい。
 前記進退機構は、軸心を左右方向へ向けて回動する回動軸を有し、当該回動軸の回動で前記足揉み装置を使用位置と収納位置との間で移動可能になっており、前記緩衝機構は、前記回動軸に設けられて過荷重を吸収する回動ダンパ手段を有してもよい。
The advancing / retreating mechanism has a propulsion shaft that moves back and forth with its axis centered in the front-rear direction, and is capable of moving the foot grinder between the use position and the storage position by the forward and backward movement of the propulsion shaft The shock-absorbing mechanism may include linear damper means that is provided on the propulsion shaft and absorbs overload.
The advancing / retracting mechanism has a rotation shaft that rotates the axis center in the left-right direction, and the rotation of the rotation shaft enables the foot grinder to move between the use position and the storage position. And the said buffer mechanism may have a rotation damper means provided in the said rotation axis | shaft and absorbing an overload.
 本発明に係るマッサージ椅子によれば、構造の一層の簡潔化、軽量化、低コスト化などを一気に解決することができる。のみならず本発明に係るマッサージ椅子では、足揉み装置を使用するに際し、使用者が足を前方へ投げ出すようなリラックスした姿勢を取れるようにして、使用感を高められるようになっている。加えて、本発明に係る椅子型マッサージ機によれば、足揉み装置が使用位置に保持されている際(宙に浮いているとき)に、足揉み装置に対して許容を越える下向き荷重が負荷したとしても破損や故障に至らない。 According to the massage chair according to the present invention, further simplification, weight reduction, and cost reduction of the structure can be solved at once. In addition to the massage chair according to the present invention, when the foot massage device is used, the user can take a relaxed posture by throwing his / her foot forward to enhance the feeling of use. In addition, according to the chair type massage machine according to the present invention, when the foot massage device is held in the use position (when floating in the air), a downward load exceeding the load is applied to the foot massage device. Even if it does, it does not lead to damage or failure.
本発明に係るマッサージ椅子の第1実施形態を一部内部透視状態にして示した側面図である。It is the side view which showed 1st Embodiment of the massage chair which concerns on this invention in a partially internal see-through state. 図1の状態から足揉み装置を使用位置へ動作させた状態にして示した側面図である。It is the side view shown in the state which moved the foot massage device to the use position from the state of FIG. 図2のA矢視図(下から見た状態の斜視図)である。FIG. 3 is a view as seen from an arrow A in FIG. 2 (a perspective view in a state viewed from below). 図1のB-B線矢視図である。FIG. 3 is a view taken along line BB in FIG. 1. (A)は図2に対応する斜視図であり(B)は回動角制限部材の近傍を拡大して示した斜視図である。(A) is the perspective view corresponding to FIG. 2, (B) is the perspective view which expanded and showed the vicinity of the rotation angle limiting member. 足揉み装置の収納状態を示した側面図である。It is the side view which showed the accommodation state of the foot massage device. 足揉み装置を収納状態と使用位置との間で動作させている状態であって且つ収納状態に近い状態として示した側面図である。It is the side view shown as a state which is operating the foot kneading device between a storage state and a use position, and close | similar to a storage state. 足揉み装置を収納状態と使用位置との間で動作させている状態であって且つ収納状態と使用状態との中間の状態として示した側面図である。It is the side view shown as the state which is operating the foot kneading device between a storage state and a use position, and is an intermediate state between a storage state and a use state. 足揉み装置を収納状態と使用位置との間で動作させている状態であって且つ使用状態に近い状態として示した側面図である。It is the side view shown as a state which is operating the foot kneading device between a stowed state and a use position, and is close to a use state. 足揉み装置の使用状態を示した側面図である。It is the side view which showed the use condition of the foot massage device. (A)は前方突出機構を斜視図であり(B)はその動作状況を説明した模式図である。(A) is a perspective view of the forward projecting mechanism, and (B) is a schematic diagram illustrating the operation state thereof. 本発明に係るマッサージ椅子を示した斜視図である。It is the perspective view which showed the massage chair which concerns on this invention. 第2実施形態の足揉み装置の使用状態を示した斜視図である。It is the perspective view which showed the use condition of the foot massage apparatus of 2nd Embodiment. 第2実施形態の足揉み装置の使用状態を示した側面図である。It is the side view which showed the use condition of the foot massage apparatus of 2nd Embodiment. 第3実施形態に係る緩衝機構を示した図である(連結切断機構が非作動)。It is the figure which showed the buffer mechanism which concerns on 3rd Embodiment (a connection cutting | disconnection mechanism is non-operation). 第3実施形態に係る緩衝機構を示した図である(連結切断機構が作動)。It is the figure which showed the buffer mechanism which concerns on 3rd Embodiment (a connection cutting | disconnection mechanism act | operates). 第4実施形態に係る緩衝機構を示した斜視図である。It is the perspective view which showed the buffer mechanism which concerns on 4th Embodiment.
 以下、本発明の実施形態を、図を基に説明する。
[第1実施形態]
 図1~図12は、本発明に係るマッサージ椅子の第1実施形態を示している。なお、図12が全体的な外観図であり、その他の図では説明の便宜上、必要に応じて構造の一部を省略して描いてある。
 マッサージ椅子1は、座部2と、この座部2の後部に設けられた背もたれ部3とを有しており、座部2の前部には、この座部2に着座した使用者の下肢(特にふくらはぎ)を揉みマッサージする足揉み装置5が設けられている。
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
1 to 12 show a first embodiment of a massage chair according to the present invention. FIG. 12 is an overall external view, and in other drawings, a part of the structure is omitted as necessary for convenience of explanation.
The massage chair 1 has a seat portion 2 and a backrest portion 3 provided at the rear portion of the seat portion 2, and a lower limb of a user seated on the seat portion 2 is located at the front portion of the seat portion 2. A foot massaging device 5 for massaging (especially calves) is provided.
 図1及び図2に示すように、座部2の下部には、このマッサージ椅子1を床面Fへ設置するための脚フレーム6が設けられており、この脚フレーム6によって座部2が所定高さに支持されるようになっている。
 また座部2の両側を挟むようにしてアームレスト7が設けられており(図12参照)、これらアームレスト7によって脚フレーム6が外から見えないように隠されている。
 なお、以下の説明において、図1の左右方向を実際の装置での前後方向と呼び、図1の上下方向を実際の装置における上下方向と呼ぶ。図1の紙面貫通方向を実際の装置での左右方向又は幅方向と呼ぶ。これらの方向は、マッサージ椅子1に座った使用者から見たものと一致する。
As shown in FIGS. 1 and 2, a leg frame 6 for installing the massage chair 1 on the floor surface F is provided at the lower portion of the seat 2, and the seat 2 is predetermined by the leg frame 6. Being supported by height.
Further, armrests 7 are provided so as to sandwich both sides of the seat portion 2 (see FIG. 12), and the leg frames 6 are hidden by these armrests 7 so that they cannot be seen from the outside.
In the following description, the left-right direction in FIG. 1 is referred to as the front-rear direction in the actual apparatus, and the up-down direction in FIG. 1 is referred to as the up-down direction in the actual apparatus. 1 is referred to as a horizontal direction or a width direction in an actual apparatus. These directions coincide with those seen from the user sitting on the massage chair 1.
 座部2は使用者の臀部を下方から支持するに十分な広さを有している。背もたれ部3は、その下端部が座部2の後部又は脚フレーム6の後部に対して前後揺動自在な状態に枢支されている。この背もたれ部3は、脚フレーム6内に配設されたリニアアクチュエータ機構などのリクライニング機構(図示略)により、リクライニング可能となっている。
 背もたれ部3の内部には、揉みや叩き、或いは振動などのマッサージ動作を行う背部用マッサージ機構(図示略)が上下移動自在に設けられている。
 足揉み装置5は、正面視すれば略四角形状を呈し、側面視すれば丸みを帯びた三角形状を呈するような箱形に形成されている。足揉み装置5の正面には、使用者の下肢(左右の足)を嵌め入れ可能にする左右一対の保持溝10,10が形成されている。
The seat portion 2 is wide enough to support the user's buttocks from below. The lower part of the backrest part 3 is pivotally supported so that it can swing back and forth with respect to the rear part of the seat part 2 or the rear part of the leg frame 6. The backrest 3 can be reclined by a reclining mechanism (not shown) such as a linear actuator mechanism disposed in the leg frame 6.
Inside the backrest 3, a back massage mechanism (not shown) that performs massage operations such as squeezing, striking, or vibrating is provided so as to be movable up and down.
The foot massage device 5 has a substantially square shape when viewed from the front, and a box shape that exhibits a rounded triangular shape when viewed from the side. A pair of left and right holding grooves 10, 10 that allow the user's lower limbs (left and right feet) to be fitted are formed in front of the foot massage device 5.
 各保持溝10の内部対向面(嵌め入れられた片方の足を挟むようにする両側)には、下肢に対して揉みマッサージを行う下肢用マッサージ装置が内蔵されている。この下肢用マッサージ装置としては、足の長さ方向に長い板材を左右に揺動させることによって揉みを施す構成としたり、空気の給排によって膨張収縮する空気袋で揉みを施す構成としたりすることができる。
 この足揉み装置5は、座部2の前方で床面Fから浮き上がり、且つ使用者の下肢をマッサージ可能な使用位置U(図2参照)と、座部2の下方に形成された収納位置P(図1参照)との間を移動可能になっている。
A massage device for the lower limb that massages the lower limbs is incorporated in the inner facing surfaces of the holding grooves 10 (both sides that sandwich one of the inserted legs). This lower limb massage device is configured to itch by swinging a plate that is long in the length direction of the foot left and right, or to be squeezed with an air bag that expands and contracts by air supply and discharge. Can do.
The foot massaging device 5 is lifted from the floor F in front of the seat 2 and can be used to massage the user's lower limbs (see FIG. 2), and a storage position P formed below the seat 2. (Refer to FIG. 1).
 すなわち、座部2の下方(脚フレーム6の内部)には進退機構15が設けられており、この進退機構15を介して、座部2側(脚フレーム6)と足揉み装置5とが連結される構成となっている。この進退機構15が前方へ向けて進出動作すると、足揉み装置5は使用位置Uに進み、その後に進退機構15が後方へ向けて退行動作すると、足揉み装置5は収納位置Pに収納されるものとなっている。
 図6は足揉み装置5の収納状態(収納位置P)であり、図10は足揉み装置5の使用状態(使用位置U)であり、図7~図9は収納状態と使用状態との切り替わりの様子(中途状態)を示している。これら図6~図10から明かなように、進退機構15は、リンク20と、揺動駆動部21と、転動輪22とを有している。
That is, an advance / retreat mechanism 15 is provided below the seat portion 2 (inside the leg frame 6), and the seat portion 2 side (leg frame 6) and the foot kneading device 5 are connected via the advance / retreat mechanism 15. It becomes the composition which is done. When the advance / retreat mechanism 15 moves forward, the foot kneading device 5 advances to the use position U, and when the advance / retreat mechanism 15 moves backward, the foot kneading device 5 is stored in the storage position P. It has become a thing.
6 shows the storage state (storage position P) of the foot massage device 5, FIG. 10 shows the use state (use position U) of the foot massage device 5, and FIGS. 7 to 9 show switching between the storage state and the use state. Is shown (halfway state). As is clear from FIGS. 6 to 10, the advance / retreat mechanism 15 includes a link 20, a swing drive unit 21, and rolling wheels 22.
 なお、座部2を支持している脚フレーム6には、このマッサージ椅子1の設置場所を全体として移動させる場合に、軽快な移動ができるようにするため、床面設置部分(足揉み装置5の底面)の後端に対して左右一対の移動用車輪23が設けられている。また、マッサージ椅子1の使用時など、移動させないときにおいてこれら移動用車輪23を床面Fから浮き上げ、設置安定性を保持させるために、床面設置部分の前後・左右の四箇所に着床部材24が設けられている。
 着床部材24は、振動吸収性と床面Fに対する滑りにくさとを兼備する硬質ゴム等で形成するのが好適である。マッサージ椅子1の設置場所を移動させる場合には、左右の移動用車輪23だけを床面Fに押し付けるように椅子全体を後方へ傾け(椅子前部を浮かし)、これで全ての着床部材24が床面Fから離れるようにして移動用車輪23を転がしながら移動させればよい。
In addition, when moving the installation place of this massage chair 1 as a whole to the leg frame 6 which supports the seat part 2, in order to be able to move lightly, a floor surface installation part (foot massage device 5) is used. A pair of left and right moving wheels 23 are provided with respect to the rear end of the bottom surface. In addition, when the massage chair 1 is not used, such as when the massage chair 1 is not moved, the moving wheels 23 are lifted from the floor surface F, and are placed at four locations on the front, rear, left and right of the floor surface installation portion in order to maintain the installation stability. A member 24 is provided.
The flooring member 24 is preferably formed of hard rubber or the like that has both vibration absorption and resistance to slipping on the floor surface F. When the installation location of the massage chair 1 is moved, the entire chair is tilted backward (the chair front part is lifted) so that only the left and right moving wheels 23 are pressed against the floor surface F, and all the landing members 24 are thus moved. May be moved while rolling the moving wheel 23 so as to move away from the floor surface F.
 一方、足揉み装置5は、底面支持枠26と背面支持枠27とが側面視L型を呈するように組まれた移動フレーム28により、装置全体に剛性が保たれるように支持されている。
 リンク20は、座部2の下部(脚フレーム6内の上部側)に設けられる定置枢支部32と、足揉み装置5の背面上部(移動フレーム28における背面支持枠27の上部)に設けられる移動枢支部33との間に連結されている。
 これら定置枢支部32や移動枢支部33は、軸心を左右方向へ向けた枢軸まわりでリンク20を相対回動自在に保持するようになったものである。そのため、座部2に対して足揉み装置5が動作するという観点で言えば、このリンク20は、定置枢支部32を支点として、移動枢支部33が前後方向に揺動自在となされたものである。
On the other hand, the foot massaging device 5 is supported by the moving frame 28 in which the bottom support frame 26 and the back support frame 27 are assembled so as to exhibit an L shape in a side view so that the rigidity of the entire device is maintained.
The link 20 is provided at a stationary pivotal support portion 32 provided at a lower portion of the seat portion 2 (upper side in the leg frame 6) and a movement provided at a rear upper portion of the foot massage device 5 (upper portion of the rear support frame 27 in the moving frame 28). It is connected between the pivot 33.
The stationary pivot portion 32 and the movable pivot portion 33 are configured to hold the link 20 so as to be relatively rotatable around a pivot axis whose axis is directed in the left-right direction. Therefore, from the viewpoint that the foot massaging device 5 operates with respect to the seat portion 2, the link 20 is configured such that the movable pivot portion 33 is swingable in the front-rear direction with the stationary pivot portion 32 as a fulcrum. is there.
 図3~図5に示すように、定置枢支部32は、座部2の左右方向中央部に設けられており、また移動枢支部33は、足揉み装置5の左右方向中央部に設けられている。従ってこれら定置枢支部32と移動枢支部33とを連結するリンク20としては、1本だけで形成されている。
 図5から明かなように、本実施形態においてリンク20は、2本のリンク構成杆34を左右方向で所定間隔をおいて並行させ、互いに連結することにより剛性の高い枠形に形成させてある。リンク構成杆34としての本数は特に限定されるものではないが、これら全体を枠形に組んだ構造体として、1本のリンク20とおく。すなわち、リンク20は単一棒部材から成る。
As shown in FIGS. 3 to 5, the stationary pivot part 32 is provided at the center part in the left-right direction of the seat part 2, and the movable pivot part 33 is provided at the center part in the left-right direction of the foot massage device 5. Yes. Accordingly, the link 20 that connects the stationary pivot portion 32 and the movable pivot portion 33 is formed by only one.
As is clear from FIG. 5, in this embodiment, the link 20 is formed in a highly rigid frame shape by connecting two link-composing rods 34 in parallel in the left-right direction at a predetermined interval and connecting them together. . The number of the link configuration rods 34 is not particularly limited, but a single link 20 is provided as a structure in which the entirety is assembled in a frame shape. That is, the link 20 is composed of a single bar member.
 またリンク20は側面視C型にカーブする形状に形成されている。すなわち、足揉み装置5が座部2下方の収納位置Pとされている状態(図6の状態)で説明すると、リンク20は、定置枢支部32から一旦、後方へ延びるようになされ、その後、足揉み装置5の正面上部から頂部を経由して背面上部側へ回り込むように下方へUターンし、その後更に、前方へ延びるようになってから移動枢支部33へ至る形状となっている。
 図6に示したように、定置枢支部32の軸心から床面Fまで最短距離で結んだ直線を最大半径Rとおく仮想円Dを考えるとき、リンク20は、定置枢支部32を中心に、この仮想円Dの範囲内に全て収まるような大きさで形成されたものとなっている。そのため、リンク20が定置枢支部32を中心に前後揺動しても、このリンク20は床面Fに接触することはない。
Further, the link 20 is formed in a shape that curves in a side view C-shape. That is, when the foot massaging device 5 is described as being in the storage position P below the seat portion 2 (the state of FIG. 6), the link 20 is once extended backward from the stationary pivot portion 32, and thereafter The foot kneading device 5 is U-turned downward so as to go around from the upper front to the upper rear side through the top, and further extends forward and then reaches the moving pivot 33.
As shown in FIG. 6, when considering a virtual circle D having a maximum radius R that is a straight line connected from the axial center of the stationary pivot 32 to the floor surface F, the link 20 is centered on the stationary pivot 32. The size of the imaginary circle D is such that it is entirely within the range of the virtual circle D. Therefore, even if the link 20 swings back and forth around the stationary pivot 32, the link 20 does not contact the floor surface F.
 このリンク20は、足揉み装置5が収納位置Pに位置するとき(図6)が可動揺動範囲の後側となり、足揉み装置5が使用位置Uに位置するとき(図10)が可動揺動範囲の前側となるようにして前後揺動する。なお、この可動揺動範囲とは、足揉み装置5が収納位置Pと使用位置Uとの間を移動するときにリンク20が揺動する領域を言う。
 足揉み装置5の背面上部に設けられる移動枢支部33とリンク20との連結部には、回動角制限部材50が設けられている。
 この回動角制限部材50は、リンク20が前方揺動することで移動枢支部33が上昇し、足揉み装置5の背面(足揉み装置5の背面支持枠27)とリンク20の前端部との角度θが所定値に達したときに、この角度θを維持させたまま、前記転動輪22(要するに足揉み装置5全体)を床面Fから浮き上がらせるようにするためのものである。
The link 20 is located behind the movable swing range when the foot massage device 5 is located at the storage position P (FIG. 6), and is movable when the foot massage device 5 is located at the use position U (FIG. 10). Swing back and forth so as to be in front of the moving range. The movable swing range refers to a region where the link 20 swings when the foot massaging device 5 moves between the storage position P and the use position U.
A rotation angle limiting member 50 is provided at a connecting portion between the moving pivot 33 and the link 20 provided at the upper back of the foot massage device 5.
In the rotation angle limiting member 50, the movement pivot support portion 33 is lifted by the swing of the link 20 forward, and the back surface of the foot gripping device 5 (the back support frame 27 of the foot gripping device 5) and the front end portion of the link 20. When the angle θ reaches a predetermined value, the rolling wheel 22 (in short, the entire foot massaging device 5) is lifted from the floor F while maintaining the angle θ.
 ここにおいて、所定角度θとは、足揉み装置5の正面が、座部2の上面と略面一な水平状態(多少の段差は含む)となるか、又は前下がりの折曲状態で連なる形態が実現可能なものとする。
 言い換えるならば、図9に示される如く、回動角制限部材50は、転動輪22を床面Fから浮き上がらせる瞬間に、移動枢支部33とリンク20とを回動自在に連結している回動軸心の直下位置より前方で足揉み装置5側へ係合して、移動枢支部33とリンク20とがそれ以上回動しないようにする。この回動角制限部材50は、移動枢支部33とリンク20とを回動自在に連結している回動軸心に平行なピン部材50としてある。つまり、このピン部材50が、背面支持枠27に設けられた当接部材50Aとリンク20とに挟まれることで、移動枢支部33とリンク20との回動状態が規制され、角度θが固定される。
Here, the predetermined angle θ is a form in which the front surface of the foot grinder 5 is in a horizontal state (including some steps) that is substantially flush with the upper surface of the seat portion 2 or is connected in a bent state in which the front is lowered. Is feasible.
In other words, as shown in FIG. 9, the rotation angle limiting member 50 is a rotation that rotatably connects the movable support portion 33 and the link 20 at the moment when the rolling wheel 22 is lifted from the floor surface F. Engage with the foot massaging device 5 in front of the position directly below the axis of movement so that the movable pivot 33 and the link 20 do not rotate any further. The rotation angle limiting member 50 is a pin member 50 parallel to a rotation axis that rotatably connects the movable pivot 33 and the link 20. That is, when the pin member 50 is sandwiched between the contact member 50A provided on the back support frame 27 and the link 20, the rotational state of the movable pivot 33 and the link 20 is restricted, and the angle θ is fixed. Is done.
 なお、本実施形態では、図5(B)から明かなように、リンク20を構成する2本のリンク構成杆34間に架設された1本のピン軸とした。しかしこれに限らず、各リンク構成杆34から互いに対向する状態で2本のピンを突設させるようにしてもよいし、またいずれか1本だけとしてもよい。リンク20側に当接部材50Aが設けられ、足揉み装置5の背面支持枠27側にピン部材50が設けられる構成であっても何ら問題はない。
 揺動駆動部21は、リンク20に対して前後揺動の駆動力を付与するものであって、本実施形態では、電動モータ35を駆動源として伸縮動作する伸縮機構36を備えたものとしてある。伸縮機構36には、例えばスクリュウ軸(ボールネジ等)を用いた機構や、ラックとピニオンギヤとの組み合わせ機構などを採用可能である。
In this embodiment, as is clear from FIG. 5 (B), a single pin shaft is installed between the two link construction rods 34 constituting the link 20. However, the present invention is not limited to this, and two pins may be provided so as to protrude from each link construction rod 34, or only one of them may be provided. There is no problem even if the contact member 50A is provided on the link 20 side and the pin member 50 is provided on the back support frame 27 side of the foot kneading device 5.
The swing drive unit 21 applies a driving force for swinging back and forth with respect to the link 20. In this embodiment, the swing drive unit 21 is provided with an expansion / contraction mechanism 36 that performs an expansion / contraction operation using the electric motor 35 as a drive source. . As the expansion / contraction mechanism 36, for example, a mechanism using a screw shaft (such as a ball screw) or a combination mechanism of a rack and a pinion gear can be employed.
 定置枢支部32においてリンク20の後端を回動自在に保持する枢軸(リンク20と一体回動する)には、これと一体回動するようにブラケット部材38が設けられている。このブラケット部材38に対して伸縮機構36の前端部が相対回動自在に連結されている。また伸縮機構36の後端部は、脚フレーム6の縦杆部6aに対して回動自在に連結されている。
 転動輪22は、足揉み装置5における背面下端、即ち、底面と背面とのコーナー部分(移動フレーム28における底面支持枠26と背面支持枠27との連結部)に設けられており、床面F上を移動自在に保持されている。
A bracket member 38 is provided on a pivot (rotating integrally with the link 20) that rotatably holds the rear end of the link 20 in the stationary pivot support 32 so as to rotate integrally therewith. The front end portion of the expansion / contraction mechanism 36 is connected to the bracket member 38 so as to be relatively rotatable. Further, the rear end portion of the telescopic mechanism 36 is rotatably connected to the vertical flange portion 6 a of the leg frame 6.
The rolling wheel 22 is provided at the lower end of the back surface of the foot massaging device 5, that is, at the corner portion between the bottom surface and the back surface (the connecting portion between the bottom surface support frame 26 and the back surface support frame 27 in the moving frame 28). The top is held movably.
 この転動輪22の輪部外周面(タイヤ部分)は、振動吸収性と床面Fに対する滑りにくさとを兼備する硬質ゴム等で形成するのが好適である。
 ところで、図11に示すように、本実施形態において進退機構15は、使用位置にある足揉み装置5を宙に浮かしたまま、更に前方へ突出させる前方突出機構60を有したものとしてある。この前方突出機構60は、使用位置にある足揉み装置5を常に後方へ向けて突出付勢させるガス圧シリンダ61を有している。
 具体的には、足揉み装置5の背面支持枠27がスライド外枠65とスライド内枠66とを互いにスライド自在に組み合わされた構成とされており、これら両枠65,66の枠内中央位置に対し、ガス圧シリンダ61が配置されるようになっている。なお、前述したピン部材50が当接する当接部材50Aは、背面支持枠27の上端部(スライド内枠66の上端部でリンク20に近い面)に設けられている。
The outer peripheral surface (tire portion) of the rolling wheel 22 is preferably formed of hard rubber or the like that has both vibration absorption and resistance to slippage with respect to the floor surface F.
By the way, as shown in FIG. 11, in this embodiment, the advancing / retreating mechanism 15 has a forward projecting mechanism 60 for projecting the foot kneading device 5 in the use position further forward while floating. The forward projecting mechanism 60 includes a gas pressure cylinder 61 that constantly biases the foot kneading device 5 in the use position toward the rear.
Specifically, the back support frame 27 of the foot massaging device 5 is configured such that the slide outer frame 65 and the slide inner frame 66 are slidably combined with each other. On the other hand, a gas pressure cylinder 61 is arranged. The contact member 50 </ b> A with which the pin member 50 contacts is provided on the upper end portion of the back support frame 27 (the surface close to the link 20 at the upper end portion of the slide inner frame 66).
 ガス圧シリンダ61は、伸長方向に付勢力を発するように構成されており、このガス圧シリンダ61の付勢力に抗するように、使用者の足等で足揉み装置5を前方に押し付け、両枠65,66を互いにスライドさせ背面支持枠27を伸長させることで、当該足揉み装置5を前方突出させる。逆に、ガス圧シリンダ61が伸長する際の付勢力で両枠65,66が互いに逆方向にスライドし、背面支持枠27の長さが縮まるようになっている。
 ガス圧シリンダ61には、その伸縮量を一時的に固定できるような固定機能が備えられており、その固定機能を使うことで、スライド外枠65とスライド内枠66との位置関係、すなわち足揉み装置5の前方突出具合を任意の位置で停めることができる。
The gas pressure cylinder 61 is configured to generate an urging force in the extending direction. To counter the urging force of the gas pressure cylinder 61, the foot massaging device 5 is pressed forward with a user's foot or the like, By sliding the frames 65 and 66 with respect to each other and extending the back support frame 27, the foot kneading device 5 is projected forward. On the contrary, both frames 65 and 66 slide in opposite directions by the urging force when the gas pressure cylinder 61 extends, and the length of the back support frame 27 is shortened.
The gas pressure cylinder 61 has a fixing function that can temporarily fix the expansion / contraction amount. By using the fixing function, the positional relationship between the slide outer frame 65 and the slide inner frame 66, that is, the foot The degree of forward protrusion of the kneading device 5 can be stopped at an arbitrary position.
 ガス圧シリンダ61の固定機能の動作は、座部2の周辺などに設けられた操作ハンドルとこの操作ハンドルからガス圧シリンダ61へと繋がるワイヤ等により行われる。
 次に、上記構成の進退機構15の動作を説明する。まず、図6に示すように足揉み装置5が座部2下方の収納位置Pにある状態とする。このとき足揉み装置5は、その底面が前方を向き、正面(使用者の下肢を嵌め入れる保持溝10,10が設けられた面)が上を向いており、また底面は座部2の前端部と略面一になっている。
 揺動駆動部21の電動モータ35を作動させると、伸縮機構36が伸長動作を開始する。そのため、伸縮機構36の後端部が連結された脚フレーム6の縦杆部6aを支えとして、伸縮機構36の前端部(ブラケット部材38)で定置枢支部32の枢軸が回動を開始するようになる。
The operation of the fixing function of the gas pressure cylinder 61 is performed by an operation handle provided around the seat 2 and a wire connected from the operation handle to the gas pressure cylinder 61.
Next, the operation of the advance / retreat mechanism 15 configured as described above will be described. First, as shown in FIG. 6, the foot kneading device 5 is in a storage position P below the seat 2. At this time, the bottom surface of the foot massage device 5 is directed forward, the front surface (the surface provided with the holding grooves 10 and 10 into which the user's lower limbs are fitted) is directed upward, and the bottom surface is the front end of the seat portion 2. It is almost flush with the part.
When the electric motor 35 of the swing drive unit 21 is operated, the expansion / contraction mechanism 36 starts to expand. Therefore, the pivot of the stationary support portion 32 starts to rotate at the front end portion (bracket member 38) of the expansion / contraction mechanism 36, with the vertical flange portion 6a of the leg frame 6 connected to the rear end portion of the expansion / contraction mechanism 36 as a support. become.
 これに伴い、リンク20は、定置枢支部32を支点として移動枢支部33が前方へ向けて揺動するようになり、その結果、図7に示すように足揉み装置5はその背面上部を前方へ前進させるようになる。この際、転動輪22が床面F上を転動するため、足揉み装置5はスムーズに移動することとなる。
 リンク20が更に前方へ揺動することで、図8→図9に示すように足揉み装置5はその背面上部が上昇を開始する。そして足揉み装置5の背面上部が座部2の前端下部よりも前方へ出て、且つ図10に示すように、足揉み装置5がその全体として上昇するようになれば、この足揉み装置5は使用位置Uへ至ったことになる。
Accordingly, the link 20 has the movable pivot 33 swinging forward with the stationary pivot 32 as a fulcrum. As a result, as shown in FIG. To move forward. At this time, since the rolling wheels 22 roll on the floor F, the foot kneading device 5 moves smoothly.
As the link 20 swings further forward, the upper part of the back of the foot massaging device 5 starts to rise as shown in FIGS. And if the back upper part of the foot kneading apparatus 5 comes out ahead of the front end lower part of the seat part 2, and the foot kneading apparatus 5 comes to rise as a whole as shown in FIG. Has reached the use position U.
 これら一連の動作が進退機構15の進出動作である。使用位置Uに至った足揉み装置5は、その背面を床面Fと対面させつつ底面が前方を向き、且つ下肢をマッサージする正面(左右の保持溝10,10における溝底に相当)が座部2の上面と略面一な水平状態又は前下がりの折曲状態(図2参照)で連なりつつ上方を向く状態となっている。
 使用者は、足揉み装置5に対して左右の保持溝10,10に片足ずつ差し入れた状態として下肢用のマッサージ機構を作動させれば、心地よくマッサージを受けることができる。また、このとき足揉み装置5が全体として上昇していることにより、使用者は足を前方へ投げ出すようなリラックスした姿勢を取れるようになり、膝を極度に曲げる必要がないので、使用感を高められるようになっている。
A series of these operations is the advance operation of the advance / retreat mechanism 15. The foot massaging device 5 that has reached the use position U has a back surface facing the floor surface F, the bottom surface facing forward, and a front surface that massages the lower limbs (corresponding to the groove bottoms in the left and right holding grooves 10, 10). It is in a state of facing upward while being connected in a horizontal state or a front-down bent state (see FIG. 2) substantially flush with the upper surface of the portion 2.
If the user operates the lower limb massage mechanism with one foot inserted into the left and right holding grooves 10, 10 with respect to the foot massage device 5, the user can comfortably receive massage. Further, at this time, the foot massaging device 5 ascends as a whole, so that the user can take a relaxed posture such as throwing his legs forward, and it is not necessary to bend the knees extremely, so the feeling of use is improved. It can be enhanced.
 なお、使用位置にある足揉み装置5が使用者の脚の長さに対して窮屈に感じた場合には、前方突出機構60により足揉み装置5を前方突出させればよい。足揉み装置5の使用後には、足揉み装置5を座部2へ近接させるようにする。
 一方、この使用位置Uから揺動駆動部21の電動モータ35を上記と逆作動させると、伸縮機構36が収縮動作を開始する。そのため、伸縮機構36の後端部が連結された脚フレーム6の縦杆部6aを支えとして、伸縮機構36の前端部(ブラケット部材38)で定置枢支部32の枢軸が上記と逆回動を開始するようになる。
In addition, what is necessary is just to make the foot kneading apparatus 5 project forward by the front protrusion mechanism 60, when the foot kneading apparatus 5 in a use position feels cramped with respect to the length of a user's leg. After the foot kneading device 5 is used, the foot kneading device 5 is brought close to the seat 2.
On the other hand, when the electric motor 35 of the swing drive unit 21 is reversely operated from the use position U, the expansion / contraction mechanism 36 starts to contract. Therefore, the pivot of the stationary support portion 32 rotates in the reverse direction with the front end portion (bracket member 38) of the expansion / contraction mechanism 36, with the vertical flange portion 6a of the leg frame 6 connected to the rear end portion of the expansion / contraction mechanism 36 as a support. To start.
 これに伴い、リンク20は、定置枢支部32を支点として移動枢支部33が後方へ向けて揺動するようになり、その結果、図9→図8に示すように足揉み装置5はそのその全体として下降し、且つその正面上部を下方へ沈み込ませるようになる。図7に示すように、足揉み装置5の正面上部が座部2下方より低くなるまで背面上部が下降すると、足揉み装置5は座部2下方を後方へ向けて退行するようになる。この際、転動輪22が床面F上を転動するため、足揉み装置5はスムーズに移動することとなる。
 そして図6に示すように、足揉み装置5が収納位置Pへ格納された状態に戻される。これら一連の動作が進退機構15の退行動作である。
Along with this, the link 20 has the movable pivot 33 swinging backward with the stationary pivot 32 as a fulcrum. As a result, as shown in FIG. 9 → FIG. As a whole, it descends and its upper front part sinks downward. As shown in FIG. 7, when the upper back portion is lowered until the front upper portion of the foot kneading device 5 becomes lower than the lower portion of the seat portion 2, the foot kneading device 5 moves backward with the lower portion of the seat portion 2 facing backward. At this time, since the rolling wheels 22 roll on the floor F, the foot kneading device 5 moves smoothly.
Then, as shown in FIG. 6, the foot kneading device 5 is returned to the state stored in the storage position P. A series of these operations is the retreat operation of the advance / retreat mechanism 15.
 足揉み装置5が収納位置Pに収まると、その底面が前方を向くと共に座部2の前端部から突出しない状態となるので、マッサージ椅子1に座った「マッサージを受けない使用者」は楽な体勢を保持できると共に、マッサージ椅子1の見栄えもシンプルなものとなってスッキリとする。
 なお、座部2の上面や足揉み装置5の保持溝10内等にリミットスイッチ等のセンサを設けておき、このセンサが使用者を検出しているとき、又は、マッサージ機構や下肢マッサージ機構が動作中の際に、進退機構15に上記の退行動作を行わせる操作があったときには、退行動作の実行が無視される構成とするのが好適である。このような構成を採り入れておけば、使用者の下肢を痛める等の不都合な状況を確実に防ぐことができる。
When the foot massage device 5 is in the storage position P, the bottom surface thereof faces forward and does not protrude from the front end portion of the seat portion 2, so that the “user who does not receive a massage” sitting on the massage chair 1 is comfortable. The body posture can be maintained and the appearance of the massage chair 1 is simple and refreshing.
It should be noted that a sensor such as a limit switch is provided on the upper surface of the seat portion 2 or the holding groove 10 of the foot massage device 5 and the sensor detects the user, or the massage mechanism or the lower limb massage mechanism is It is preferable that the execution of the retreating operation is ignored when there is an operation for causing the advance / retreat mechanism 15 to perform the retreating operation during the operation. By adopting such a configuration, it is possible to reliably prevent an unfavorable situation such as hurting the user's lower limb.
 また、前方突出機構60に関しても、足揉み装置5の背面支持枠27やガス圧シリンダ61等にリミットスイッチ等のセンサを設けておき、このセンサが足揉み装置5の前方突出状態を検出しているときに進退機構15に上記の退行動作を行わせる操作があったときには、退行動作の実行が無視される構成とするのが好適である。
 ところで、本発明に係るマッサージ椅子1は、上記実施形態に限定されるものではない。
 例えば、定置枢支部32は、座部2の左右両側に一対(即ち2箇所)設けられたものとし、移動枢支部33についても、足揉み装置5の左右両側に一対(即ち2箇所)設けられたものとすることができる。この場合、左側の定置枢支部32と移動枢支部33、右側の定置枢支部32と移動枢支部33を、それぞれ連結するように、左右一対(即ち2本)のリンク20を用いるようにしてもよい。
As for the forward protrusion mechanism 60, a sensor such as a limit switch is provided on the back support frame 27, the gas pressure cylinder 61, or the like of the foot gripping device 5, and this sensor detects the forward protrusion state of the foot gripping device 5. When there is an operation for causing the advancing / retreating mechanism 15 to perform the retreating operation when the vehicle is in a retreating state, it is preferable that the execution of the retreating operation is ignored.
By the way, the massage chair 1 which concerns on this invention is not limited to the said embodiment.
For example, it is assumed that the stationary pivot part 32 is provided as a pair (that is, two places) on both the left and right sides of the seat part 2, and the movable pivot part 33 is also provided as a pair (that is, two places) on both the left and right sides of the foot massage device 5. Can be. In this case, a pair of left and right (that is, two) links 20 may be used so as to connect the left stationary pivot 32 and the movable pivot 33 and the right stationary pivot 32 and the movable pivot 33, respectively. Good.
 またリンク20は、側面視C型とすることが限定されるものではなく、一直線状のものとして形成することができる。
 揺動駆動部21は、電動モータで歯車機構を動作させ、これでリンク20を前後揺動させるように構成させることもできる。
 回動角制限部材50は、ピン状物に限定されず、またその取付位置、係合相手なども限定されるものではない。すなわち、リンク20が前方揺動する過程で足揉み装置5を所定角度θに維持させたまま、床面Fから浮き上がらせるための係合構造を構成するものであればよい。
[第2実施形態]
 図13,図14は、本発明に係るマッサージ椅子の第2実施形態を示している。
Further, the link 20 is not limited to the C-type in a side view, and can be formed as a straight line.
The swing drive unit 21 can be configured to operate a gear mechanism with an electric motor and thereby swing the link 20 back and forth.
The rotation angle limiting member 50 is not limited to a pin-like object, and its attachment position, engagement partner, and the like are not limited. That is, any structure may be used as long as it forms an engagement structure for floating from the floor surface F while maintaining the foot massaging device 5 at the predetermined angle θ while the link 20 swings forward.
[Second Embodiment]
13 and 14 show a second embodiment of the massage chair according to the present invention.
 本実施形態が、第1実施形態と異なる点は、足揉み装置5の背面上部に設けられる移動枢支部33とリンク20との連結部に設けられた回動角制限部材50に代えて、架設リンク50Z(押出リンク)を有している点にある。
 図13,図14から明かなように、進退機構15は、リンク20と、揺動駆動部21と、転動輪22と、架設リンク50Z(押出リンク)とを有している。
 足揉み装置5は、底面支持枠26と背面支持枠27とが側面視L型を呈するように組まれた移動フレーム28により、装置全体に剛性が保たれるように支持されている。
The present embodiment differs from the first embodiment in that it is installed in place of the rotation angle limiting member 50 provided at the connecting portion between the moving pivot 33 and the link 20 provided at the upper back of the foot kneading device 5. The link 50Z (extrusion link) is provided.
As is clear from FIGS. 13 and 14, the advance / retreat mechanism 15 includes a link 20, a swing drive unit 21, rolling wheels 22, and a construction link 50 </ b> Z (extrusion link).
The foot massaging device 5 is supported by the moving frame 28 in which the bottom support frame 26 and the back support frame 27 are assembled so as to exhibit an L shape in a side view so that the rigidity of the entire device is maintained.
 背面支持枠27は、スライド外枠65(下方スライド枠)とスライド内枠66(上方スライド枠)とを互いにスライド自在に組み合わされた構成とされている。スライド外枠65の先端に底面支持枠26が結合され、スライド内枠66の基端側(上端側)がリンク20と連結されている。
 リンク20は、座部2の下部(脚フレーム6内の上部側)に設けられる定置枢支部32と、足揉み装置5の背面上部(スライド内枠66の上端部)に設けられる移動枢支部33との間に連結されている。
The back support frame 27 has a configuration in which a slide outer frame 65 (downward slide frame) and a slide inner frame 66 (upper slide frame) are slidably combined with each other. The bottom support frame 26 is coupled to the distal end of the slide outer frame 65, and the base end side (upper end side) of the slide inner frame 66 is connected to the link 20.
The link 20 includes a stationary pivot portion 32 provided at the lower portion of the seat portion 2 (upper side in the leg frame 6) and a movable pivot portion 33 provided at the upper rear portion of the foot massage device 5 (upper end portion of the slide inner frame 66). It is connected between.
 これら定置枢支部32や移動枢支部33は、軸心を左右方向へ向けた枢軸まわりでリンク20を相対回動自在に保持するようになったものである。そのため、座部2に対して足揉み装置5が動作するという観点で言えば、このリンク20は、定置枢支部32を支点として、移動枢支部33が前後方向に揺動自在となされたものである。
 図13に示すように、定置枢支部32は、座部2の左右方向中央部に設けられており、また移動枢支部33は、足揉み装置5の左右方向中央部に設けられている。従ってこれら定置枢支部32と移動枢支部33とを連結するリンク20としては、1本だけで形成されている。
The stationary pivot portion 32 and the movable pivot portion 33 are configured to hold the link 20 so as to be relatively rotatable around a pivot axis whose axis is directed in the left-right direction. Therefore, from the viewpoint that the foot massaging device 5 operates with respect to the seat portion 2, the link 20 is configured such that the movable pivot portion 33 is swingable in the front-rear direction with the stationary pivot portion 32 as a fulcrum. is there.
As shown in FIG. 13, the stationary pivot part 32 is provided at the center part in the left-right direction of the seat part 2, and the movable pivot part 33 is provided at the center part in the left-right direction of the foot massage device 5. Accordingly, the link 20 that connects the stationary pivot portion 32 and the movable pivot portion 33 is formed by only one.
 リンク20は、図13から明かなように、2本のリンク構成杆34を左右方向で所定間隔をおいて並行させ、互いに連結することにより剛性の高い枠形に形成させてある。リンク構成杆34としての本数は特に限定されるものではないが、これら全体を枠形に組んだ構造体として、1本のリンク20とおく。すなわち、リンク20は単一棒部材から成る。
 またリンク20は側面視C型にカーブする形状に形成されている。すなわち、足揉み装置5が座部2下方の収納位置Pとされている状態で説明すると、リンク20は、定置枢支部32から一旦、後方へ延びるようになされ、その後、足揉み装置5の正面上部から頂部を経由して背面上部側へ回り込むように下方へUターンし、その後更に、前方へ延びるようになってから移動枢支部33へ至る形状となっている。
As is clear from FIG. 13, the link 20 is formed in a highly rigid frame shape by connecting two link-composing rods 34 in parallel in the left-right direction at a predetermined interval and connecting them together. The number of the link configuration rods 34 is not particularly limited, but a single link 20 is provided as a structure in which the entirety is assembled in a frame shape. That is, the link 20 is composed of a single bar member.
Further, the link 20 is formed in a shape that curves in a side view C-shape. That is, in the state where the foot kneading device 5 is in the storage position P below the seat portion 2, the link 20 is once extended backward from the stationary pivot portion 32, and then the front of the foot kneading device 5. The U-turn is turned downward so as to go around from the upper part to the upper part of the back surface via the top part, and after that, further extends forward and then reaches the movable pivot part 33.
 定置枢支部32の軸心から床面Fまで最短距離で結んだ直線を最大半径Rとおく仮想円Dを考えるとき、リンク20は、定置枢支部32を中心に、この仮想円Dの範囲内に全て収まるような大きさで形成されたものとなっている。そのため、リンク20が定置枢支部32を中心に前後揺動しても、このリンク20は床面Fに接触することはない。
 このリンク20は、足揉み装置5が収納位置Pに位置するときが可動揺動範囲の後側となり、足揉み装置5が使用位置Uに位置するとき(図14)が可動揺動範囲の前側となるようにして前後揺動する。なお、この可動揺動範囲とは、足揉み装置5が収納位置Pと使用位置Uとの間を移動するときにリンク20が揺動する領域を言う。
When considering a virtual circle D having a maximum radius R as a straight line connected from the axial center of the stationary pivot 32 to the floor surface F, the link 20 is within the range of the virtual circle D around the stationary pivot 32. It is formed in a size that fits all. Therefore, even if the link 20 swings back and forth around the stationary pivot 32, the link 20 does not contact the floor surface F.
The link 20 is on the rear side of the movable swing range when the foot kneading device 5 is located at the storage position P, and the front side of the movable swing range when the foot kneading device 5 is located at the use position U (FIG. 14). Swing back and forth as follows. The movable swing range refers to a region where the link 20 swings when the foot massaging device 5 moves between the storage position P and the use position U.
 架設リンク50Zは、リンク20の中間部に設けられる基部枢支部51と、足揉み装置5の背面部(詳しくはスライド外枠65の上部側)に設けられた先部枢支部52との間に回動自在に連結されている。
 そのため、リンク20が定置枢支部32を支点に前方揺動する過程であって、且つ移動枢支部33が下死点を越えるようになると、この架設リンク50Zが基部枢支部51を基点としつつ、スライド外枠65をスライド内枠66に対して押し出すようにスライドさせ(言い換えるならば、背面支持枠27を伸長させ)、足揉み装置5を前方突出させる。その後、背面支持枠27が伸長許容量に達し、それ以上伸長しなくなると共に、転動輪22(要するに足揉み装置5全体)が床面Fの上方へ浮き上がる。
The erection link 50 </ b> Z is between a base pivot part 51 provided at an intermediate part of the link 20 and a front pivot part 52 provided on the back surface part (specifically, the upper side of the slide outer frame 65) of the foot massaging device 5. It is pivotally connected.
Therefore, when the link 20 is in the process of swinging forward with the stationary pivot 32 as a fulcrum, and the movable pivot 33 exceeds the bottom dead center, the erection link 50Z is based on the base pivot 51, The slide outer frame 65 is slid so as to be pushed against the slide inner frame 66 (in other words, the back support frame 27 is extended), and the foot massaging device 5 is projected forward. Thereafter, the back support frame 27 reaches the allowable extension amount and does not extend any more, and the rolling wheel 22 (in short, the entire leg massaging device 5) floats above the floor surface F.
 足揉み装置5の使用位置Uでは、足揉み装置5の正面が座部2の上面と略面一な水平状態(多少の段差は含む)となるか、又は前下がりの折曲状態となっている。
 揺動駆動部21は、リンク20に対して前後揺動の駆動力を付与するものであって、本実施形態では、電動モータ35を駆動源として伸縮動作する伸縮機構36を備えたものとしてある。伸縮機構36には、例えばスクリュウ軸(ボールネジ等)を用いた機構や、ラックとピニオンギヤとの組み合わせ機構などを採用可能である。
 定置枢支部32においてリンク20の後端を回動自在に保持する枢軸(リンク20と一体回動する)には、これと一体回動するようにブラケット部材38が設けられている。このブラケット部材38に対して伸縮機構36の前端部が相対回動自在に連結されている。また伸縮機構36の後端部は、脚フレーム6の縦杆部6aに対して回動自在に連結されている。
At the use position U of the foot kneading device 5, the front surface of the foot kneading device 5 is in a horizontal state (including some steps) substantially flush with the upper surface of the seat portion 2, or is bent forward and downward. Yes.
The swing drive unit 21 applies a driving force for swinging back and forth with respect to the link 20. In this embodiment, the swing drive unit 21 is provided with an expansion / contraction mechanism 36 that performs an expansion / contraction operation using the electric motor 35 as a drive source. . As the expansion / contraction mechanism 36, for example, a mechanism using a screw shaft (such as a ball screw) or a combination mechanism of a rack and a pinion gear can be employed.
A bracket member 38 is provided on a pivot (rotating integrally with the link 20) that rotatably holds the rear end of the link 20 in the stationary pivot support 32 so as to rotate integrally therewith. The front end portion of the expansion / contraction mechanism 36 is connected to the bracket member 38 so as to be relatively rotatable. Further, the rear end portion of the telescopic mechanism 36 is rotatably connected to the vertical flange portion 6 a of the leg frame 6.
 次に、上記構成の進退機構15の動作を説明する。まず、足揉み装置5が座部2下方の収納位置Pにある状態とする。このとき足揉み装置5は、その底面が前方を向き、正面(使用者の下肢を嵌め入れる保持溝10,10が設けられた面)が上を向いており、また底面は座部2の前端部と略面一になっている。
 揺動駆動部21の電動モータ35を作動させると、伸縮機構36が伸長動作を開始する。そのため、伸縮機構36の後端部が連結された脚フレーム6の縦杆部6aを支えとして、伸縮機構36の前端部(ブラケット部材38)で定置枢支部32の枢軸が回動を開始するようになる。
Next, the operation of the advance / retreat mechanism 15 configured as described above will be described. First, it is assumed that the foot massaging device 5 is in the storage position P below the seat 2. At this time, the bottom surface of the foot massage device 5 is directed forward, the front surface (the surface provided with the holding grooves 10 and 10 into which the user's lower limbs are fitted) is directed upward, and the bottom surface is the front end of the seat portion 2. It is almost flush with the part.
When the electric motor 35 of the swing drive unit 21 is operated, the expansion / contraction mechanism 36 starts to expand. Therefore, the pivot of the stationary support portion 32 starts to rotate at the front end portion (bracket member 38) of the expansion / contraction mechanism 36, with the vertical flange portion 6a of the leg frame 6 connected to the rear end portion of the expansion / contraction mechanism 36 as a support. become.
 これに伴い、リンク20は、定置枢支部32を支点として移動枢支部33が前方へ向けて揺動するようになり、その結果、足揉み装置5はその背面上部を前方へ前進させるようになる。この際、転動輪22が床面F上を転動するため、足揉み装置5はスムーズに移動することとなる。
 リンク20が更に前方へ揺動することで、足揉み装置5はその背面上部が上昇を開始する。そして足揉み装置5の背面上部が座部2の前端下部よりも前方へ出て、更に図14に示すように、足揉み装置5が前方突出しつつその全体として上昇するようになれば、この足揉み装置5は使用位置Uへ至ったことになる。
Accordingly, in the link 20, the moving pivot 33 is swung forward with the stationary pivot 32 as a fulcrum, and as a result, the foot massaging device 5 advances its upper back part forward. . At this time, since the rolling wheels 22 roll on the floor F, the foot kneading device 5 moves smoothly.
As the link 20 swings further forward, the upper part of the back of the foot massaging device 5 starts to rise. Then, if the back upper part of the foot kneading device 5 protrudes forward from the lower front end portion of the seat 2, and the foot kneading device 5 rises as a whole while protruding forward, as shown in FIG. The kneading device 5 has reached the use position U.
 これら一連の動作が進退機構15の進出動作である。使用位置Uに至った足揉み装置5は、その背面を床面Fと対面させつつ底面が前方を向き、且つ下肢をマッサージする正面が座部2の上面と略面一な水平状態又は前下がりの折曲状態で連なりつつ上方を向く状態となっている。
 使用者は、足揉み装置5に対して左右の保持溝10,10に片足ずつ差し入れた状態として下肢用のマッサージ機構を作動させれば、心地よくマッサージを受けることができる。またこのとき足揉み装置5が全体として上昇し、且つ前方へ突出していることにより、使用者は足を前方へ投げ出すようなリラックスした姿勢を取れるようになり、膝を極度に曲げる必要がないので、使用感を高められるようになっている。
A series of these operations is the advance operation of the advance / retreat mechanism 15. The foot massage device 5 that has reached the use position U is in a horizontal state or a front-down direction in which the bottom surface faces the floor surface F, the bottom surface faces forward, and the front surface that massages the lower limbs is substantially flush with the upper surface of the seat 2. It is in a state of facing upwards while continuing in a bent state.
If the user operates the lower limb massage mechanism with one foot inserted into the left and right holding grooves 10, 10 with respect to the foot massage device 5, the user can comfortably receive massage. At this time, the foot massaging device 5 ascends as a whole and protrudes forward, so that the user can take a relaxed posture such as throwing the foot forward, and there is no need to bend the knee extremely. , To improve the feeling of use.
 一方、この使用位置Uから揺動駆動部21の電動モータ35を上記と逆作動させると、伸縮機構36が収縮動作を開始する。そのため、伸縮機構36の後端部が連結された脚フレーム6の縦杆部6aを支えとして、伸縮機構36の前端部(ブラケット部材38)で定置枢支部32の枢軸が上記と逆回動を開始するようになる。
 これに伴い、リンク20は、定置枢支部32を支点として移動枢支部33が後方へ向けて揺動するようになり、その結果、足揉み装置5はその全体として、前方突出した分を後方へ退行させつつ下降し、更にその正面上部を下方へ沈み込ませるようになる。足揉み装置5の正面上部が座部2下方より低くなるまで背面上部が下降すると、足揉み装置5は座部2下方を後方へ向けて退行するようになる。この際、転動輪22が床面F上を転動するため、足揉み装置5はスムーズに移動することとなる。
On the other hand, when the electric motor 35 of the swing drive unit 21 is reversely operated from the use position U, the expansion / contraction mechanism 36 starts to contract. Therefore, the pivot of the stationary support portion 32 rotates in the reverse direction with the front end portion (bracket member 38) of the expansion / contraction mechanism 36, with the vertical flange portion 6a of the leg frame 6 connected to the rear end portion of the expansion / contraction mechanism 36 as a support. To start.
Accordingly, the link 20 is configured such that the movable pivot 33 swings backward with the stationary pivot 32 as a fulcrum, and, as a result, the foot massaging device 5 as a whole projects the portion protruding forward to the rear. It descends while retreating, and it further sinks the front upper part downward. When the rear upper part is lowered until the front upper part of the foot kneading device 5 is lower than the lower part of the seat part 2, the foot kneading apparatus 5 moves backward with the lower part of the seat part 2 directed rearward. At this time, since the rolling wheels 22 roll on the floor F, the foot kneading device 5 moves smoothly.
 そして、足揉み装置5が収納位置Pへ格納された状態に戻される。これら一連の動作が進退機構15の退行動作である。
[第3実施形態]
 図15,図16は、本発明に係るマッサージ椅子の第3実施形態を示している。
 本実施形態が、第1実施形態と異なる点は、進退機構15に、伸縮機構36と電動モータ35(駆動源)との連動状態を一時的に切り離す連結切断機構120と緩衝機構150とが設けられている点にある。
Then, the foot kneading device 5 is returned to the state stored in the storage position P. A series of these operations is the retreat operation of the advance / retreat mechanism 15.
[Third Embodiment]
15 and 16 show a third embodiment of the massage chair according to the present invention.
This embodiment is different from the first embodiment in that the advance / retreat mechanism 15 is provided with a connection / disconnection mechanism 120 and a buffer mechanism 150 that temporarily disconnects the interlocking state between the telescopic mechanism 36 and the electric motor 35 (drive source). It is in the point.
 前述の如く、揺動駆動部21は、リンク20に対して前後揺動の駆動力を付与するものであって、本実施形態では、電動モータ35を駆動源として伸縮動作する伸縮機構36を備えたものとしてある。
 揺動駆動部21は、リンク20に対して前後揺動の駆動力を付与するためのものであり、電動モータ35と、電動モータ35を駆動源として伸縮動作する伸縮機構36とを有している。更に進退機構15には、伸縮機構36と電動モータ35(駆動源)との連動状態を一時的に切り離す連結切断機構120と、緩衝機構150とが設けられている。
As described above, the oscillating drive unit 21 applies a driving force for oscillating back and forth with respect to the link 20. In this embodiment, the oscillating drive unit 21 includes an extension mechanism 36 that extends and contracts using the electric motor 35 as a drive source. It is as a thing.
The swing drive unit 21 is for applying a driving force for swinging back and forth to the link 20, and includes an electric motor 35 and a telescopic mechanism 36 that extends and contracts using the electric motor 35 as a drive source. Yes. Further, the advance / retreat mechanism 15 is provided with a connection / disconnection mechanism 120 that temporarily disconnects the interlocking state between the telescopic mechanism 36 and the electric motor 35 (drive source), and a buffer mechanism 150.
 図15、図16には揺動駆動部21の断面が示されている。この揺動駆動部21内に緩衝機構150が設けられている。なお、揺動駆動部21等の説明では、図15、図16における左右を前後と呼ぶこととする。図15は、電動モータ35で発生した動力が伸縮機構36を伸縮させて足揉み装置5が移動している状況下を示している。図16は、連結切断機構120により、伸縮機構36への動力伝達が遮断され、足揉み装置5が移動されていない(足揉み装置5を自由に進退させることができる)状況下を示している。
 図15、図16に示すように、揺動駆動部21の伸縮機構36は、その伸縮動作方向(前後方向)に沿って円筒形に形成された外筒110と、同じく、伸縮動作方向(前後方向)に沿って円筒形に形成され且つ前記外筒110に対して出入り動作自在な状態で挿入される推進軸100とを有している。
15 and 16 show a cross section of the swing drive unit 21. A buffer mechanism 150 is provided in the swing drive unit 21. In the description of the swing drive unit 21 and the like, the left and right in FIGS. 15 and 16 are referred to as front and rear. FIG. 15 shows a situation in which the power generated by the electric motor 35 expands and contracts the expansion / contraction mechanism 36 and the foot kneading device 5 moves. FIG. 16 shows a situation in which the power transmission to the expansion / contraction mechanism 36 is interrupted by the connection / disconnection mechanism 120 and the foot kneading device 5 is not moved (the foot kneading device 5 can be freely advanced and retracted). .
As shown in FIGS. 15 and 16, the expansion / contraction mechanism 36 of the swing drive unit 21 is in the same direction as the outer cylinder 110 formed in a cylindrical shape along the expansion / contraction operation direction (front / rear direction). The propulsion shaft 100 is formed in a cylindrical shape along the direction) and inserted into the outer cylinder 110 so as to be movable in and out.
 この伸縮機構36は、足揉み装置5を使用位置Uにするときには外筒110から推進軸100が前方へ突出し(伸長し)、足揉み装置5を収納位置Pにするときには推進軸100を後退させて外筒110内に格納する(収縮する)状態となる。外筒110には、外周面にネジ溝が形成されたネジ軸112が収納され、ネジ軸112は、駆動源である電動モータ35の回転軸にウォームギヤを介して連結されている。
 ネジ軸112には、貫通孔を有しその内側面にネジ溝が形成された移動子114が螺合している。この移動子114の外形は、推進軸100側に向けて先細り形状となっている円錐台形状であり、上下に2分割される構成となっている。
The expansion / contraction mechanism 36 projects (extends) the propulsion shaft 100 forward from the outer cylinder 110 when the foot kneading device 5 is set to the use position U, and retracts the propulsion shaft 100 when the foot kneading device 5 is set to the storage position P. Thus, it is stored (contracted) in the outer cylinder 110. The outer cylinder 110 houses a screw shaft 112 having a thread groove formed on the outer peripheral surface thereof, and the screw shaft 112 is connected to a rotating shaft of an electric motor 35 as a drive source via a worm gear.
A moving element 114 having a through hole and having a thread groove formed on the inner surface thereof is screwed onto the screw shaft 112. The outer shape of the moving element 114 is a truncated cone shape that is tapered toward the propulsion shaft 100 side, and is configured to be divided into two vertically.
 一方、推進軸100の後端側には、円柱状のキャップ体106が嵌め込まれている。このキャップ体106の径方向中央部には、移動子114の錐面が嵌り込む(同じテーパ角を有する)先細り状のテーパ錐面を有する凹部(テーパ錐面凹部)121が形成されている。即ち、キャップ体106の凹部121に移動子114の錐面が嵌り込んでいて、くさび状態となっている。すなわち、キャップ体106はくさび部材である。
 キャップ体106の後端側(電動モータ35側)には、蓋部材122が設けられて、当該蓋部材122により、テーパ錐面凹部121が蓋部材122で閉塞されている。
On the other hand, a cylindrical cap body 106 is fitted on the rear end side of the propulsion shaft 100. A concave portion (tapered conical surface concave portion) 121 having a tapered tapered conical surface into which the conical surface of the moving element 114 is fitted (having the same taper angle) is formed at the central portion in the radial direction of the cap body 106. That is, the conical surface of the movable element 114 is fitted in the concave portion 121 of the cap body 106, and the wedge body is in a wedge state. That is, the cap body 106 is a wedge member.
A lid member 122 is provided on the rear end side (electric motor 35 side) of the cap body 106, and the tapered conical surface recess 121 is closed by the lid member 122 by the lid member 122.
 移動子114の後端側(電動モータ35側)と、キャップ体106(蓋部材122)との間には、当該キャップ体106を移動子114に向けて付勢するコイルバネ116が設けられている。
  即ち、コイルバネ116は、蓋部材122で押されて圧縮された状態となっていて、蓋部材122が取り付いているキャップ体106を移動子114に(後方側に)一定の力で押し込むことで、移動子114とキャップ体106との「くさび作用」を発生させている。つまり、キャップ体106のテーパ錐面凹部121が、コイルバネ116による力で移動子114の外周面に接触することになり、くさび作用で分割可能な移動子114が径方向に押圧されて一体化し、移動子114とネジ軸112との螺合状態は維持されることとなる。
A coil spring 116 for biasing the cap body 106 toward the mover 114 is provided between the rear end side (the electric motor 35 side) of the mover 114 and the cap body 106 (lid member 122). .
That is, the coil spring 116 is pressed and compressed by the lid member 122, and the cap body 106 to which the lid member 122 is attached is pushed into the moving element 114 (rearward side) with a constant force. A “wedge effect” between the moving element 114 and the cap body 106 is generated. In other words, the tapered conical surface recess 121 of the cap body 106 comes into contact with the outer peripheral surface of the movable element 114 by the force of the coil spring 116, and the movable element 114 that can be divided by the wedge action is pressed and integrated in the radial direction. The screwed state between the moving element 114 and the screw shaft 112 is maintained.
 以上述べた、移動子114、キャップ体106のテーパ錐面凹部121、コイルバネ116などから連結切断機構120が構成される。この連結切断機構120は、上述した機構(ネジ軸112、移動子114及び外側くさび106)に限定されるものではない。例えば、トルクリミッタのように動力伝達板であるクラッチをスリップさせる機構を採用してもよい。
 上述したように、進退機構15の揺動駆動部21は、伸縮機構36の伸縮動作として、外筒110から推進軸100を前方へ突出させたり、推進軸100を後退させて外筒110内へ格納させたりする。進退機構15は、この伸縮動作により定置枢支部32の回動軸まわりでブラケット部材38を回動させ、このブラケット部材38(回動軸)と共にリンク20を一体回動させて、前記足揉み装置5を使用位置Pと収納位置Uとの間で移動させるものである。
The connection cutting mechanism 120 is composed of the moving element 114, the tapered conical surface recess 121 of the cap body 106, the coil spring 116, and the like described above. This connection cutting mechanism 120 is not limited to the above-described mechanisms (screw shaft 112, moving element 114, and outer wedge 106). For example, you may employ | adopt the mechanism which slips the clutch which is a power transmission plate like a torque limiter.
As described above, the swing drive unit 21 of the advance / retreat mechanism 15 causes the propulsion shaft 100 to protrude forward from the outer cylinder 110 or retract the propulsion shaft 100 into the outer cylinder 110 as the expansion / contraction operation of the expansion / contraction mechanism 36. Or store it. The advancing / retracting mechanism 15 rotates the bracket member 38 around the rotation axis of the stationary pivot 32 by this expansion / contraction operation, and integrally rotates the link 20 together with the bracket member 38 (rotation axis). 5 is moved between the use position P and the storage position U.
 緩衝機構150は、推進軸100に沿って設けられた直線ダンパ151(直線ダンパ手段)を有している。この直線ダンパ151は、使用位置で保持された足揉み装置5に許容を越える下向き荷重である「過荷重」が付与された際に、当該過荷重が進退機構15に伝達するのを防ぐものとなっている。
 直線ダンパ151の具体的な構造は、円筒形に形成された推進軸100の筒内にコイルスプリング153が収納され、このコイルスプリング153が、推進軸100の後端側に結合された円柱状のキャップ体106と、推進軸100の前端側に出入り動作自在に挿入されたヒンジヘッド155との前後間で挟持されるような状態に封じ込められている。
The buffer mechanism 150 has a linear damper 151 (linear damper means) provided along the propulsion shaft 100. The linear damper 151 prevents the overload from being transmitted to the advancing / retreating mechanism 15 when an “overload”, which is a downward load exceeding the allowable value, is applied to the foot kneading device 5 held at the use position. It has become.
A specific structure of the linear damper 151 is that a coil spring 153 is housed in a cylinder of the propulsion shaft 100 formed in a cylindrical shape, and this coil spring 153 is coupled to the rear end side of the propulsion shaft 100. The cap body 106 and the hinge head 155 inserted into the front end side of the propulsion shaft 100 so as to freely enter and exit are sealed in a state of being sandwiched between the front and rear.
 なお、ヒンジヘッド155は推進軸100の筒内径よりも細く形成されているが、このヒンジヘッド155の後端部には推進軸100の筒内径と同等又は若干径小のバネ受け156が結合されている。このバネ受け156に対してコイルスプリング153の前端が当接するようになっている。
 また、推進軸100の前端側には、ヒンジヘッド155は通すがバネ受け156は通さないスリーブ体154が結合されており、このスリーブ体154によってヒンジヘッド155が推進軸100から抜け止めされている。ヒンジヘッド155には、ヒンジ軸157を介してブラケット部材38が揺動自在に連結されている。
The hinge head 155 is formed to be narrower than the cylindrical inner diameter of the propulsion shaft 100, but a spring receiver 156 that is equal to or slightly smaller in diameter than the cylindrical inner diameter of the propulsion shaft 100 is coupled to the rear end portion of the hinge head 155. ing. The front end of the coil spring 153 comes into contact with the spring receiver 156.
Further, a sleeve body 154 through which the hinge head 155 passes but not through the spring receiver 156 is coupled to the front end side of the propulsion shaft 100, and the hinge head 155 is prevented from coming off the propulsion shaft 100 by the sleeve body 154. . A bracket member 38 is swingably connected to the hinge head 155 via a hinge shaft 157.
 コイルスプリング153は、その両端部でキャップ体106及びヒンジヘッド155を相反する方向へ突っ張る状態(押圧付勢する状態)とされており、且つ、軸方向(前後方向)で圧縮代をまだ少し残した状態とされている。従って、この直線ダンパ151は、コイルスプリング153に保持された圧縮代を詰めることのできる範囲で、キャップ体106とヒンジヘッド155との相互間距離を短くさせることができる。
 ただし、コイルスプリング153に残る圧縮代、即ち、キャップ体106とヒンジヘッド155とを相反する方向へ突っ張る状態(バネ力)は、伸縮機構36として、外筒110から推進軸100を前方へ突出させ、前記足揉み装置5を収納位置Uから使用位置Pへ移動させるときには維持される(圧縮しない)ようになっている。
The coil spring 153 is in a state in which the cap body 106 and the hinge head 155 are stretched in opposite directions (pressing and urging state) at both ends thereof, and the compression allowance is still left in the axial direction (front-rear direction). It is supposed to be in a state. Accordingly, the linear damper 151 can shorten the distance between the cap body 106 and the hinge head 155 within a range in which the compression margin held by the coil spring 153 can be reduced.
However, the compression margin remaining on the coil spring 153, that is, the state in which the cap body 106 and the hinge head 155 are stretched in opposite directions (spring force), causes the propulsion shaft 100 to project forward from the outer cylinder 110 as the expansion mechanism 36. When the foot kneading device 5 is moved from the storage position U to the use position P, it is maintained (not compressed).
 コイルスプリング153が圧縮するのは、足揉み装置5が使用位置Pへ達した後、宙に浮いた状態とされているときに、この足揉み装置5に対して過荷重が負荷したときである。
 以上述べた構成を有する進退機構15に関し、その動作、つまり足揉み装置5の進退動作を説明する。
 まず、足揉み装置5が座部2下方の収納位置Pにある状態とする。このとき足揉み装置5は、その底面が前方を向き、正面(使用者の下肢を嵌め入れる保持溝10,10が設けられた面)が上を向いており、また底面は座部2の前端部と略面一になっている。
The coil spring 153 is compressed when an overload is applied to the foot kneading device 5 when the foot kneading device 5 is in a suspended state after reaching the use position P. .
Regarding the advancing / retreating mechanism 15 having the above-described configuration, the operation, that is, the advancing / retreating operation of the foot massage device 5 will be described.
First, it is assumed that the foot massaging device 5 is in the storage position P below the seat 2. At this time, the bottom surface of the foot massage device 5 is directed forward, the front surface (the surface provided with the holding grooves 10 and 10 into which the user's lower limbs are fitted) is directed upward, and the bottom surface is the front end of the seat portion 2. It is almost flush with the part.
 揺動駆動部21の電動モータ35を作動させると、伸縮機構36が伸長動作を開始する。そのため、伸縮機構36の後端部が連結された脚フレーム6の縦杆部6aを支えとして、伸縮機構36の前端部(ブラケット部材38)で定置枢支部32の回動軸が回動を開始するようになる。このとき、図15に示す状態である。
 これに伴い、リンク20は、定置枢支部32を支点として移動枢支部33が前方へ向けて揺動するようになり、その結果、足揉み装置5はその背面上部を前方へ前進させるようになる。この際、転動輪22が床面F上を転動するため、足揉み装置5はスムーズに移動することとなる。
When the electric motor 35 of the swing drive unit 21 is operated, the expansion / contraction mechanism 36 starts to expand. Therefore, the rotation shaft of the stationary pivot 32 starts to rotate at the front end (bracket member 38) of the expansion / contraction mechanism 36, with the vertical flange 6a of the leg frame 6 connected to the rear end of the expansion / contraction mechanism 36 as a support. Will come to do. At this time, the state is as shown in FIG.
Accordingly, in the link 20, the moving pivot 33 is swung forward with the stationary pivot 32 as a fulcrum, and as a result, the foot massaging device 5 advances its upper back part forward. . At this time, since the rolling wheels 22 roll on the floor F, the foot kneading device 5 moves smoothly.
 リンク20が更に前方へ揺動することで、足揉み装置5はその背面上部が上昇を開始する。そして足揉み装置5の背面上部が座部2の前端下部よりも前方へ出て、且つ足揉み装置5がその全体として上昇するようになれば、この足揉み装置5は使用位置Uへ至ったことになる。
 これら一連の動作が進退機構15の進出動作である。使用位置Uに至った足揉み装置5は、その背面を床面Fと対面させつつ底面が前方を向き、且つ下肢をマッサージする正面(左右の保持溝10,10における溝底に相当)が座部2の上面と略面一な水平状態又は前下がりの折曲状態で連なりつつ上方を向く状態となっている。
As the link 20 swings further forward, the upper part of the back of the foot massaging device 5 starts to rise. And if the back upper part of the foot kneading device 5 comes out ahead of the front end lower part of the seat part 2 and the foot kneading device 5 comes to rise as a whole, this foot kneading device 5 has reached the use position U. It will be.
A series of these operations is the advance operation of the advance / retreat mechanism 15. The foot massaging device 5 that has reached the use position U has a back surface facing the floor surface F, the bottom surface facing forward, and a front surface that massages the lower limbs (corresponding to the groove bottoms in the left and right holding grooves 10, 10). It is in a state of facing upward while being connected in a horizontal state or a front-down bent state substantially flush with the upper surface of the portion 2.
 使用者は、足揉み装置5に対して左右の保持溝10,10に片足ずつ差し入れた状態として下肢用のマッサージ機構を作動させれば、心地よくマッサージを受けることができる。また、このとき足揉み装置5が全体として上昇していることにより、使用者は足を前方へ投げ出すようなリラックスした姿勢を取れるようになり、膝を極度に曲げる必要がないので、使用感を高められるようになっている。
 なお、使用位置にある足揉み装置5を必要に応じて前方突出状態に切り換え可能にする機構を設けておき、使用者が脚の長さに対して足揉み装置5を窮屈に感じた場合に、この足揉み装置5を前方突出状態とさせればよい。足揉み装置5の使用後には、足揉み装置5を座部2へ近接させるようにする。
If the user operates the lower limb massage mechanism with one foot inserted into the left and right holding grooves 10, 10 with respect to the foot massage device 5, the user can comfortably receive massage. Further, at this time, the foot massaging device 5 ascends as a whole, so that the user can take a relaxed posture such as throwing his legs forward, and it is not necessary to bend the knees extremely, so the feeling of use is improved. It can be enhanced.
In addition, when the mechanism which makes it possible to switch the foot kneading device 5 in the use position to the forward projecting state as necessary is provided, and the user feels the foot kneading device 5 cramped with respect to the length of the leg, The foot kneading device 5 may be made to protrude forward. After the foot kneading device 5 is used, the foot kneading device 5 is brought close to the seat 2.
 一方、この使用位置Uから揺動駆動部21の電動モータ35を上記と逆作動させると、伸縮機構36が収縮動作を開始する。そのため、伸縮機構36の後端部が連結された脚フレーム6の縦杆部6aを支えとして、伸縮機構36の前端部(ブラケット部材38)で定置枢支部32の回動軸が上記と逆回動を開始するようになる。このとき、図15に示す状態である。
 これに伴い、リンク20は、定置枢支部32を支点として移動枢支部33が後方へ向けて揺動するようになり、その結果、足揉み装置5はその全体として下降し、且つその正面上部を下方へ沈み込ませるようになる。
On the other hand, when the electric motor 35 of the swing drive unit 21 is reversely operated from the use position U, the expansion / contraction mechanism 36 starts to contract. For this reason, the rotation shaft of the stationary pivotal support portion 32 rotates in the reverse direction at the front end portion (bracket member 38) of the expansion / contraction mechanism 36, with the vertical flange portion 6a of the leg frame 6 to which the rear end portion of the expansion / contraction mechanism 36 is connected. Will begin to move. At this time, the state is as shown in FIG.
Along with this, the link 20 is configured such that the moving pivot 33 swings backward with the stationary pivot 32 as a fulcrum, and as a result, the foot massaging device 5 is lowered as a whole, and the front upper portion thereof is moved. It will sink down.
 足揉み装置5の正面上部が座部2下方より低くなるまで背面上部が下降すると、足揉み装置5は座部2下方を後方へ向けて退行するようになる。この際、転動輪22が床面F上を転動するため、足揉み装置5はスムーズに移動することとなる。
 そして、足揉み装置5が収納位置Pへ格納された状態に戻される。これら一連の動作が進退機構15の退行動作である。
 足揉み装置5が収納位置Pに収まると、その底面が前方を向くと共に座部2の前端部から突出しない状態となるので、椅子型マッサージ機1に座った「マッサージを受けない使用者」は楽な体勢を保持できると共に、椅子型マッサージ機1の見栄えもシンプルなものとなってスッキリとする。
When the rear upper part is lowered until the front upper part of the foot kneading device 5 is lower than the lower part of the seat part 2, the foot kneading apparatus 5 moves backward with the lower part of the seat part 2 directed rearward. At this time, since the rolling wheels 22 roll on the floor F, the foot kneading device 5 moves smoothly.
Then, the foot kneading device 5 is returned to the state stored in the storage position P. A series of these operations is the retreat operation of the advance / retreat mechanism 15.
When the foot massage device 5 is placed in the storage position P, the bottom surface thereof faces forward and does not protrude from the front end portion of the seat portion 2, so that the “user who does not receive a massage” sitting on the chair type massage machine 1 While maintaining an easy posture, the appearance of the chair type massage machine 1 is simple and refreshing.
 伸縮機構36を収縮動作させているときに、足揉み装置5と座部2との間に使用者の下肢等の障害物があると、図16に示す状態になり、電動モータ35が進退機構15を退行させるように回転しても、推進軸100が外筒110に格納される方向に移動しない。
 さらに、進退機構15が電気的に故障しているとき(少なくとも電動モータ35が回転していないとき)に、足揉み装置5を使用位置U側に人手で移動させようと足揉み装置5を手前に引っ張ると、図16に示す状態になり、移動子114の雌ネジがネジ軸112の雄ネジを乗り越えて、推進軸100が外筒110から突出するように移動して、足揉み装置5を使用位置U側に容易に引き出される。
When the telescopic mechanism 36 is contracted and there is an obstacle such as a user's lower limb between the foot massage device 5 and the seat 2, the state shown in FIG. Even if it rotates so as to retract 15, the propulsion shaft 100 does not move in the direction in which it is stored in the outer cylinder 110.
Furthermore, when the advancing / retreating mechanism 15 is electrically out of order (at least when the electric motor 35 is not rotating), the foot grinder 5 is moved forward to manually move the foot grinder 5 to the use position U side. 16, the state is as shown in FIG. 16, the internal thread of the moving element 114 gets over the external thread of the screw shaft 112, and the propulsion shaft 100 moves so as to protrude from the outer cylinder 110. It is easily pulled out to the use position U side.
 このように、伸縮機構36内には、電動モータ35からの駆動力を伝達したり遮断したりする動力伝達遮断機構が備えられているので、電気的な回路構成を必要としないで使用者の下肢を痛める等の不都合な状況を確実に防ぐことができる。さらに、電気的に故障しても足揉み装置5を使用位置U側に容易に引き出すことができる。
 そして、足揉み装置5を使用位置に保持させておくとき(宙に浮かせておくとき)に、例えば、この足揉み装置5の上に子供がいたずらで乗ったり、不注意で大人が腰掛けたり、或いは荷物を置いたり、といったことが起こったとする。このとき、足揉み装置5には過荷重が負荷することになる。
As described above, since the expansion / contraction mechanism 36 is provided with a power transmission cutoff mechanism that transmits and shuts off the driving force from the electric motor 35, it is possible to eliminate the need for an electric circuit configuration. Inconvenient situations such as hurting the lower limbs can be surely prevented. Further, even if an electrical failure occurs, the foot massage device 5 can be easily pulled out to the use position U side.
And when holding the foot massage device 5 in the use position (when floating in the air), for example, a child rides on the foot massage device 5 with mischief, or an adult sits carelessly, Or suppose that something happened, such as putting luggage. At this time, the foot massaging device 5 is overloaded.
 このようになると、足揉み装置5と進退機構15との間に設けられたリンク20には、定置枢支部32の回動軸を支点としてブラケット部材38を押し戻すような回動作用が生じるようになる(図15中の白抜き矢符Y参照)。従って、これに伴って進退機構15の伸縮機構36では、推進軸100のヒンジヘッド155が後方へ押され、この推進軸100に設けられた直線ダンパ151は、コイルスプリング153を圧縮させるようになる。
 その結果、過荷重が直接的に進退機構15に伝達するのを防ぐようになり、足揉み装置5を支持している部分や進退機構15が過荷重によって破損したり故障したりすることを防ぐことができるようになる。
In this case, the link 20 provided between the foot massaging device 5 and the advancing / retracting mechanism 15 has a pivoting action such that the bracket member 38 is pushed back with the pivoting shaft of the stationary pivotal support 32 as a fulcrum. (See the white arrow Y in FIG. 15). Accordingly, in the expansion / contraction mechanism 36 of the advance / retreat mechanism 15, the hinge head 155 of the propulsion shaft 100 is pushed backward, and the linear damper 151 provided on the propulsion shaft 100 compresses the coil spring 153. .
As a result, the overload is prevented from being directly transmitted to the advance / retreat mechanism 15, and the portion supporting the foot massaging device 5 and the advance / retreat mechanism 15 are prevented from being damaged or broken by the overload. Will be able to.
 なお、コイルスプリング153が圧縮する(緩衝機構150が過荷重を緩衝する)のは、足揉み装置5(転動輪22)が床面に着くまでの間である。また、足揉み装置5に対する過荷重が解消されれば、直線ダンパ151は圧縮力を元に戻すようになり、自動的に、推進軸100が足揉み装置5に対して前方押出作用を生じる正常な状態へと復帰することになる。
 なお、直線ダンパ151は、コイルスプリング153を採用するものに代えて、オイル圧やエア圧等を利用した構造にすることが可能である。
[第4実施形態]
 図17は、本発明に係る椅子型マッサージ機の第4実施形態を示している。
The coil spring 153 is compressed (the buffer mechanism 150 buffers the overload) until the foot kneading device 5 (rolling wheel 22) reaches the floor surface. Further, when the overload on the foot massaging device 5 is eliminated, the linear damper 151 returns the compression force to the original, and the propulsion shaft 100 automatically generates a forward pushing action on the foot massaging device 5 normally. Will return to the correct state.
Note that the linear damper 151 can have a structure using oil pressure, air pressure, or the like, instead of the one using the coil spring 153.
[Fourth Embodiment]
FIG. 17 shows a fourth embodiment of the chair type massage machine according to the present invention.
 本実施形態が第3実施形態と最も異なるところは、進退機構15に設けられる緩衝機構150の具体的構造にある。
 また、第2実施形態において、座部2側の定置枢支部32に対し、軸心を左右方向へ向けた状態で回動自在に設けられた回動軸170は、入力軸170aと、この入力軸170aに同軸で且つ相対回転自在な状態で突き合わされた出力軸170bとを有した連接軸構造とされている。
 そして、このような回動軸170に対し、伸縮機構36の推進軸100によって揺動されるブラケット部材38は、入力軸170aと一体回動する構造とされ、足揉み装置5を使用位置Pと収納位置Uとの間で移動させるリンク20は、出力軸170bと一体回動する構造とされたものとする。
This embodiment is most different from the third embodiment in the specific structure of the buffer mechanism 150 provided in the advance / retreat mechanism 15.
Further, in the second embodiment, the rotation shaft 170 provided so as to be rotatable with the axial center directed in the left-right direction with respect to the stationary pivot support portion 32 on the seat portion 2 side includes the input shaft 170a and the input shaft 170a. The connecting shaft structure has an output shaft 170b that is coaxial with the shaft 170a and is faced in a relatively rotatable state.
And the bracket member 38 rock | fluctuated with the propulsion shaft 100 of the expansion-contraction mechanism 36 with respect to such a rotation axis | shaft 170 is made into the structure rotated integrally with the input shaft 170a, and makes the foot massage apparatus 5 the use position P. It is assumed that the link 20 that is moved between the storage position U and the output shaft 170b rotates together.
 第2実施形態の緩衝機構150は、定置枢支部32の回動軸170に対し、入力軸170aと出力軸170bとの連接部分まわりで弾性変形により捻り圧を昇圧させたり、この捻り圧を元に戻したりする回動ダンパ171(回動ダンパ手段)を有して構成されている。
 回動ダンパ171の具体的な構造としては、回動軸170における入力軸170aと出力軸170bとの間に、両者を連結するコイルスプリング173が設けられている。このコイルスプリング173は、回動軸170の外側に巻き付くよう同軸状に配設されていて、コイルスプリング173の一方端が入力軸170aへ連結し、コイルスプリング173の他方端が出力軸170bへ連結していて、入力軸170aの回動力を出力軸170bへ伝達可能となっている。
The buffer mechanism 150 according to the second embodiment increases the torsional pressure by elastic deformation around the connecting portion of the input shaft 170a and the output shaft 170b with respect to the rotation shaft 170 of the stationary pivot support portion 32, or based on this torsional pressure. Rotating damper 171 (rotating damper means) that returns to the above is configured.
As a specific structure of the rotary damper 171, a coil spring 173 that connects the input shaft 170 a and the output shaft 170 b of the rotary shaft 170 is provided. The coil spring 173 is coaxially disposed so as to be wound around the outer side of the rotating shaft 170. One end of the coil spring 173 is connected to the input shaft 170a, and the other end of the coil spring 173 is connected to the output shaft 170b. They are connected so that the rotational force of the input shaft 170a can be transmitted to the output shaft 170b.
   かかる緩衝機構150において、足揉み装置5を使用位置に保持させておくとき(宙に浮かせておくとき)に、例えば、この足揉み装置5の上に子供がいたずらで乗ったり、不注意で大人が腰掛けたり、或いは荷物を置いたり、といったことが起こったとする。このとき、足揉み装置5には過荷重が負荷することになる。
 すると、リンク構成杆34は、出力軸170b回りに下向きに揺動し、図17の右斜めから見て、出力軸170bは反時計回りに回動する。しかしながら、この回動は、回動ダンパ171の捻り弾性変形により吸収され、入力軸170aへ直接は伝達しないようになる。その結果、過荷重が緩衝されて進退機構15に伝達せず、足揉み装置5を支持している部分や進退機構15が過荷重によって破損したり故障したりすることを防ぐことができるようになる。
In the buffer mechanism 150, when the foot kneading device 5 is held at the use position (when it is suspended in the air), for example, a child rides on the foot kneading device 5 in a mischief or carelessly an adult. Suppose something happens to sit down or leave a baggage. At this time, the foot massaging device 5 is overloaded.
Then, the link constituting rod 34 swings downward around the output shaft 170b, and the output shaft 170b rotates counterclockwise when viewed from the right side of FIG. However, this rotation is absorbed by the torsional elastic deformation of the rotation damper 171 and is not transmitted directly to the input shaft 170a. As a result, the overload is buffered and is not transmitted to the advance / retreat mechanism 15, so that it is possible to prevent the portion supporting the foot gripping device 5 and the advance / retreat mechanism 15 from being damaged or broken due to the overload. Become.
 なお、第4実施形態で採用した回動ダンパ171は、コイルスプリング173を採用するものに代えて、オイル圧やエア圧等を利用した捻りダンパの構造にすることが可能である。
 今回開示された実施形態はすべての点で例示であって制限的なものではないと考えられるべきである。本発明の範囲は上記した説明ではなくて特許請求の範囲によって示され、特許請求の範囲と均等の意味及び範囲内でのすべての変更が含まれることが意図される。
Note that the rotating damper 171 employed in the fourth embodiment can have a torsional damper structure using oil pressure, air pressure, or the like, instead of using the coil spring 173.
It should be thought that embodiment disclosed this time is an illustration and restrictive at no points. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.
 本発明は、マッサージ椅子に取り付けられる足揉み装置に適用することが可能であり、ソファや車両の座席等にも適用可能である。 The present invention can be applied to a foot massage device attached to a massage chair, and can also be applied to a sofa or a vehicle seat.
 1   マッサージ椅子
 2   座部
 3   背もたれ部
 5   足揉み装置
 15  進退機構
 20  リンク
 22  転動輪
 21  揺動駆動部
 32  定置枢支部
 33  移動枢支部
 35  電動モータ
 36  伸縮機構
 50  回動角制限部材(ピン部材)
 50Z 架設リンク
 60  前方突出機構
 61  ガス圧シリンダ
 150 緩衝機構
 151 直線ダンパ
 171 回動ダンパ
 F   床面
 P   収納位置
 U   使用位置
DESCRIPTION OF SYMBOLS 1 Massage chair 2 Seat part 3 Backrest part 5 Foot massage device 15 Advance / retreat mechanism 20 Link 22 Rolling wheel 21 Oscillation drive part 32 Stationary pivot part 33 Movement pivot part 35 Electric motor 36 Telescopic mechanism 50 Rotation angle restriction member (pin member)
50Z erection link 60 forward projecting mechanism 61 gas pressure cylinder 150 buffer mechanism 151 linear damper 171 rotation damper F floor surface P storage position U use position

Claims (16)

  1.  座部と該座部の後部に設けられた背もたれ部と前記座部の前部に設置された足揉み装置とを有するマッサージ椅子において、
     前記座部の下方に足揉み装置と連接する進退機構が設けられ、
     前記進退機構が前方に進出動作すると、足揉み装置は座部の前方で床面の上方に浮き上がり且つ使用者の下肢をマッサージ可能な位置である使用位置に進み、前記進退機構が後方に退行動作すると、足揉み装置は座部の下方に形成された収納位置に収納されることを特徴とする足揉み装置を備えたマッサージ椅子。
    In a massage chair having a seat, a backrest provided at the rear of the seat, and a foot massage device installed at the front of the seat,
    An advance / retreat mechanism connected to the foot grinder is provided below the seat,
    When the advance / retreat mechanism moves forward, the foot kneading device floats above the floor in front of the seat and moves to a use position where the user's lower limb can be massaged, and the advance / retreat mechanism retracts backward. Then, the massage chair provided with the foot massage device, wherein the foot massage device is stored in a storage position formed below the seat.
  2.  前記使用位置にある足揉み装置は、その背面が床面と対面し且つ底面が前方を向く状態となっており、
     前記収納位置にある足揉み装置は、その底面が前方を向くと共に座部の前端部と略面一となり下肢をマッサージする正面が上方を向く状態となっていることを特徴とする請求項1に記載の足揉み装置を備えたマッサージ椅子。
    The foot massage device in the use position is in a state where the back surface faces the floor surface and the bottom surface faces the front,
    The foot massaging device in the storage position is in a state in which the bottom surface thereof faces frontward and the front surface of the seat portion is substantially flush with the front surface for massaging the lower limbs. A massage chair provided with the described foot massage device.
  3.  前記進退機構は、収納位置にある足揉み装置の背面上部を座部の前端よりも前方へ前進させた後又は前進させる途中に上昇させることで足揉み装置を使用位置へ至らせる進出動作と、使用位置にある足揉み装置の正面上部が座部下方より低くなるまで前記背面上部を下降させた後に座部下方へ退行させることで足揉み装置を収納位置に戻す退行動作と、を行う構成になっていることを特徴とする請求項2に記載の足揉み装置を備えたマッサージ椅子。 The advancing and retreating mechanism is an advance operation for bringing the foot grinder to the use position by raising the back upper part of the foot grinder in the storage position forward from the front end of the seat or in the middle of the advance. It is configured to perform a retreat operation for returning the foot grinder to the storage position by lowering the back upper portion until the front upper portion of the foot grinder in the use position is lower than the seat lower portion, and then retreating downward to the seat portion. The massage chair provided with the foot massage apparatus of Claim 2 characterized by the above-mentioned.
  4.  前記進退機構は、座部の下部に設けられる定置枢支部と足揉み装置の背面上部に設けられる移動枢支部との間に連結されて定置枢支部を支点に移動枢支部を前後揺動自在に保持するリンクと、このリンクに対して前後揺動の駆動力を付与する揺動駆動部と、足揉み装置の背面下端に設けられて床面上を移動自在に保持された転動輪と、を有しており、
     前記リンクが当該リンクの揺動域の後方側へ揺動すると足揉み装置が収納位置に移動し、前記リンクが当該リンクの揺動域の前方側へ揺動すると足揉み装置が使用位置に移動するように構成されていることを特徴とする請求項2又は3に記載の足揉み装置を備えたマッサージ椅子。
    The advancing / retreating mechanism is connected between a stationary pivot provided at the lower part of the seat and a movable pivot provided at the upper back of the footgrip device so that the movable pivot can be swung back and forth around the stationary pivot. A link to be held, a rocking drive unit that applies a driving force for rocking back and forth to the link, and a rolling wheel that is provided at the lower end of the back of the foot kneading device and is movably held on the floor surface. Have
    When the link swings to the rear side of the swinging area of the link, the foot kneading device moves to the storage position, and when the link swings to the front side of the swinging area of the link, the foot kneading device moves to the use position. It is comprised so that it may carry out. The massage chair provided with the foot massage apparatus of Claim 2 or 3 characterized by the above-mentioned.
  5.  前記足揉み装置の移動枢支部と前記リンクとの連結部には、リンクと足揉み装置との角度が所定角度以下にならないようにする回動角制限部材が設けられており、
     前記所定角度を、前記足揉み装置の使用位置において当該足揉み装置が床面に非接触となるための角度に設定していることを特徴とする請求項4記載の足揉み装置を備えたマッサージ椅子。
    A rotation angle limiting member that prevents the angle between the link and the foot massaging device from becoming equal to or less than a predetermined angle is provided at the connecting portion between the moving support portion of the foot massaging device and the link,
    5. The massage provided with a foot massage device according to claim 4, wherein the predetermined angle is set to an angle at which the foot massage device is not in contact with the floor surface at the use position of the foot massage device. Chair.
  6.  前記回動角制限部材は、足揉み装置の移動枢支部とリンクとを回動自在に連結している回動軸心に平行なピン部材であって、前記ピン部材はリンクと移動枢支部とで挟み込まれ可能なように、リンク及び/又は移動枢支部に配設されていることを特徴とする請求項5に記載の足揉み装置を備えたマッサージ椅子。 The rotation angle limiting member is a pin member that is parallel to a rotation axis that rotatably connects the moving pivot part and the link of the foot massage device, and the pin member includes a link and a movement pivot part. The massage chair provided with the foot kneading device according to claim 5, wherein the massage chair is disposed on the link and / or the moving pivot so as to be sandwiched between the legs.
  7.  前記リンクは、座部の左右方向中央部に設けられる定置枢支部と足揉み装置の左右方向中央部に設けられる移動枢支部とを連結する単一部材で形成されていることを特徴とする請求項6に記載の足揉み装置を備えたマッサージ椅子。 The said link is formed with the single member which connects the stationary pivot part provided in the left-right direction center part of a seat part, and the movement pivot part provided in the left-right direction center part of a foot massage apparatus. The massage chair provided with the foot massage apparatus of claim | item 6.
  8.  前記リンクは、前記足揉み装置が収納位置に位置する際に、足揉み装置の正面上部から頂部に沿うような側面視C型にカーブする形状に形成されていることを特徴とする請求項6に記載の足揉み装置を備えたマッサージ椅子。 The said link is formed in the shape which curves in the side view C type | mold which follows a top part from the front upper part of a foot kneading device, when the said foot kneading device is located in a storage position. A massage chair provided with the foot massage device described in 1.
  9.  前記進退機構の揺動駆動部は、電動モータ駆動の伸縮機構を有していることを特徴とする請求項6に記載の足揉み装置を備えたマッサージ椅子。 The massage chair provided with the foot kneading device according to claim 6, wherein the swing drive unit of the advance / retreat mechanism has an expansion / contraction mechanism driven by an electric motor.
  10.  前記進退機構は、使用位置にある足揉み装置を浮上状態のまま前方へ突出可能とする前方突出機構を有していることを特徴とする請求項5に記載の足揉み装置を備えたマッサージ椅子。 The massage chair provided with the foot kneading device according to claim 5, wherein the advance / retreat mechanism has a front projecting mechanism that allows the foot kneading device in a use position to project forward in a floating state. .
  11.  前記前方突出機構は、足揉み装置を前後方向にスライド自在とするスライド機構を前記リンクの前端部に有し、
     前記スライド機構には、足揉み装置を後方に付勢する付勢部材が備えられていることを特徴とする請求項10に記載の足揉み装置を備えたマッサージ椅子。
    The forward projecting mechanism has a slide mechanism at the front end of the link that allows the foot grinder to slide in the front-rear direction.
    The massage chair provided with the foot massage device according to claim 10, wherein the slide mechanism includes a biasing member that biases the foot massage device backward.
  12.  前記進退機構は、座部の下部に設けられる定置枢支部と足揉み装置の背面上部に設けられる移動枢支部との間に連結されて定置枢支部を支点に移動枢支部を前後揺動自在に保持するリンクと、このリンクに対して前後揺動の駆動力を付与する揺動駆動部と、足揉み装置の背面下端に設けられて床面上を移動自在に保持された転動輪と、前記リンクの中間部と足揉み装置の背面部との間に架け渡されると共に前記リンク及び足揉み装置の背面部に対して回動自在で且つ足揉み装置の背面に沿ってスライド自在となっている架設リンクと、を有しており、
     前記リンクが当該リンクの揺動域の後方側へ揺動すると足揉み装置が収納位置に移動し、前記リンクが当該リンクの揺動域の前方側へ揺動すると足揉み装置が使用位置に移動するように構成されていることを特徴とする請求項3に記載の足揉み装置を備えたマッサージ椅子。
    The advancing / retreating mechanism is connected between a stationary pivot provided at the lower portion of the seat and a movable pivot provided at the upper back of the footgrip device so that the movable pivot can be swung back and forth around the stationary pivot. A link to be held, a swing drive unit that applies a driving force for swinging back and forth to the link, a rolling wheel that is provided at the lower back end of the foot kneading device and is held movably on the floor surface, It is spanned between the middle part of the link and the back part of the foot-climbing device, and is rotatable with respect to the link and the back part of the foot-gear device, and is slidable along the back side of the foot-growth device. An erection link, and
    When the link swings to the rear side of the swinging area of the link, the foot kneading device moves to the storage position, and when the link swings to the front side of the swinging area of the link, the foot kneading device moves to the use position. It is comprised so that it may carry out. The massage chair provided with the foot massage apparatus of Claim 3 characterized by the above-mentioned.
  13.  前記足揉み装置の背面部には、互いにスライド自在となっている下方スライド枠と上方スライド枠とからなる背面支持枠が設けられ、
     前記下方スライド枠に足揉み装置が取り付けられると共に、前記架設リンクが回動自在に連結し、
     前記上方スライド枠の上端部に移動枢支部が設けられ前記リンクの先端部が揺動自在に連結されていることを特徴とする請求項12に記載の足揉み装置を備えたマッサージ椅子。
    A back support frame comprising a lower slide frame and an upper slide frame that are slidable with respect to each other is provided on the back portion of the foot massage device,
    The foot slide device is attached to the lower slide frame, and the erection link is rotatably connected.
    The massage chair provided with the foot massaging device according to claim 12, wherein a moving pivotal support portion is provided at an upper end portion of the upper slide frame, and a tip end portion of the link is swingably connected.
  14.  前記進退機構又は足揉み装置と進退機構とを連結する部分には、使用位置で保持された足揉み装置に許容を越える下向き荷重である過荷重が付与された際に、当該過荷重が進退機構に伝達するのを防ぐための緩衝機構が設けられていることを特徴とする請求項1に記載の足揉み装置を備えたマッサージ椅子。 When an overload, which is a downward load that exceeds an allowable amount, is applied to the foot-clamping device held in the use position, the portion that connects the advancing / retreating mechanism or the foot-gearing device with the advancing / retreating mechanism causes the overload to move back and forth. The massage chair provided with the foot kneading device according to claim 1, further comprising a buffer mechanism for preventing transmission to the body.
  15.  前記進退機構は、軸心を前後方向へ向けて前後動する推進軸を有し、当該推進軸の前後動で足揉み装置を使用位置と収納位置との間で移動可能になっており、
     前記緩衝機構は、前記推進軸に設けられて過荷重を吸収する直線ダンパ手段を有することを特徴とする請求項14に記載の足揉み装置を備えたマッサージ椅子。
    The advance / retreat mechanism has a propulsion shaft that moves back and forth with its axis oriented in the front-rear direction, and is capable of moving the foot grinder between the use position and the storage position by the back-and-forth movement of the propulsion shaft,
    The massage chair according to claim 14, wherein the buffer mechanism includes linear damper means provided on the propulsion shaft to absorb overload.
  16.  前記進退機構は、軸心を左右方向へ向けて回動する回動軸を有し、当該回動軸の回動で前記足揉み装置を使用位置と収納位置との間で移動可能になっており、
     前記緩衝機構は、前記回動軸に設けられて過荷重を吸収する回動ダンパ手段を有することを特徴とする請求項14に記載の足揉み装置を備えたマッサージ椅子。
    The advancing / retracting mechanism has a rotation shaft that rotates the axis center in the left-right direction, and the rotation of the rotation shaft enables the foot grinder to move between the use position and the storage position. And
    The massage chair provided with a foot kneading device according to claim 14, wherein the buffer mechanism has a rotation damper means provided on the rotation shaft to absorb an overload.
PCT/JP2009/058136 2008-12-05 2009-04-24 Massage chair with foot massaging device WO2010064460A1 (en)

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