JP4644545B2 - Massage mechanism and massage machine equipped with it - Google Patents

Description

  The present invention relates to a massage mechanism for treating the body of a user and a massage machine provided with the massage mechanism, and in particular, relates to a massage mechanism devised with a fir tree / tapping mechanism, and a massage machine provided with the massage mechanism.

  2. Description of the Related Art Conventionally, massage machines that give stimulation to a user's body such as fisting, tapping, acupressure, and rolling have been widely known. There are various types of such massage machines such as a chair type and a mattress type. Among them, the chair type massage machine can perform massage in a state where the user is in a relaxed posture. Many of such conventional chair type massage machines are configured to give the stimulation mainly with the treatment element to the back and shoulders of the user.

  The treatment element of the massage machine is configured to be able to change the position in the vertical direction of the back of the user so as to give the stimulus to the back and shoulders of the user. In addition, the treatment element is generally a massage that performs various treatments on the user by giving a gripping action and a striking action to an arm that supports the treatment element from a direction orthogonal to the back of the person to be treated. Provided in the mechanism.

  As the treatment elements provided in this massage mechanism, generally, a plurality of treatment elements are provided on both the left and right sides of the body center of the user, and these treatment elements are placed in the height direction from the back to the shoulder of the user. While moving, it gives stimulation to the body of the user such as fir, tapping, shiatsu and rolling. For example, arms with two treatment elements on the upper and lower sides are provided on the left and right sides of the massage mechanism, and these four treatment elements give various stimuli to the body of the user, such as firth, beating, shiatsu, and rolling. Some have massages.

  As a prior art regarding the arm for supporting the treatment element, there is a support arm formed by fiber reinforced plastic previously filed by the present applicant (see, for example, Patent Document 1).

As another conventional technique, the spherical head at the tip of the rod provided on the bracket of the hammer shaft is pivotally supported by the lever of the hammer shaft, and the stroke operation of the hammer shaft is transmitted to the arm via the lever of the hammer shaft. (For example, refer to Patent Documents 2 and 3).
JP 2004-337360 A (5th page, FIG. 2) JP 2000-237257 A (2nd page, FIGS. 7 and 10) Japanese Patent Laying-Open No. 2005-687 (6th and 7th pages, FIGS. 7 and 10)

  By the way, in addition to the massage mechanism in which the arms provided with the two treatment elements above and below are provided on both the left and right sides, for example, there is also a massage mechanism in which the arm provided with one treatment element is provided on both the left and right sides.

  However, in the case of an arm equipped with a single treatment element, it is necessary to apply a plurality of stimuli such as fisting, tapping, acupressure, rolling, etc. It must be a massage mechanism that drives the arm in a different configuration from the arm with two treatment elements.

  For example, when two treatment elements are provided at the top and bottom of the arm, the arm can be applied so that the back of the user can be stimulated by the operation of both the upper and lower treatment elements. In the case of a single treatment element, the arm must be operated so that the back of the user can be stimulated by only the movement of the treatment element, such as fisting, tapping, acupressure, and rolling. Therefore, the direction and range for driving the arm and the magnitude of the power must be changed to a suitable configuration.

  If two treatment elements are provided on the upper and lower sides, the acupressure point of the user can be determined by the inclination of the arm according to the behavior of the treatment element from the state where the upper and lower treatment elements are in contact with the back of the user. However, in the case of a single treatment element, it is necessary to detect the acupressure point of the user from the inclination of the arm due to the behavior of the single treatment element. The moving range must also be configured appropriately.

  In addition, the said patent document 1 is invention characterized by the material of an arm, and is not described at all about the massage mechanism which operates this arm.

  Patent Documents 2 and 3 are directed only to a configuration in which a load when a user falls into the treatment element acts in a direction in which the lever of the fir shaft and the spherical head of the rod are pressed. It is difficult to stably convey a variety of striking motions and scrubbing motions as well as different configurations for driving the.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a massage mechanism that can stably transmit various operations, such as a striking operation and a scissor operation, to an arm, and a massage machine including the massage mechanism.

In order to achieve the above-mentioned object, the massage mechanism of the present invention supports an arm provided with a treatment element and transmits a kneading operation of the kneading shaft to the arm, and a tapping connecting rod for transmitting the tapping operation of the tapping shaft. The knocking connecting rod and the kneading connecting rod are connected by a universal joint having a spherical seat on the entire circumference in a direction intersecting the axis direction of the hitting shaft, and the universal joint is hit by the spherical seat. A spherical member that supports the entire circumference in a direction that intersects the axial direction of the shaft, and a support shaft that protrudes from the spherical member in the axial direction of the tapping shaft, and the kneading rod is fixed to the support shaft. The fir-rod connecting rod swings about a spherical member.
In this way, the connection between the hitting connecting rod and the scissor connecting rod is subjected to the force in the direction intersecting the axial center direction of the hitting shaft by the universal joint having the spherical seat on the entire circumference, so that the pushing direction and the pulling direction of the hitting shaft are controlled. Various operations including the above can be reliably received by the support by the spherical seat in the entire circumferential direction, and the power transmission of various operations can be stably performed. In addition, the universal joint can be made small, and stable power transmission can be performed with the small universal joint.

  Further, the hitting connecting rod is constituted by a joint side portion provided with the universal joint and a shaft side portion supporting an end portion of the hitting shaft, and a hitting shaft is provided between the shaft side portion and the joint side portion. If a bent part that bends within a predetermined angle range is provided in the axial direction of the shaft, the freedom of the beating connecting rod itself to bend and displace increases, and power transmission between the beating shaft and the grind shaft that performs different operations can be improved. It can be done smoothly.

  Further, the arm is supported by the kneading connecting rod so as to be swingable, and a biasing member is provided between the arm and the kneading connecting rod for biasing the arm so as to swing downward. An arm locking member that restricts swinging at a predetermined angle may be provided. In this way, the arm swinging range can be limited by a predetermined angle by the kneading connecting rod, and the treatment element provided on the arm can be reliably brought into contact with the user to perform massage.

  On the other hand, the massage machine of the present invention includes any one of these massage mechanisms in the backrest portion, and is provided with a control device that drives and controls the massage mechanism. According to this massage machine, it is possible to stably transmit the striking operation by the striking shaft and the scoring operation by the scissor shaft to the arm and perform stable massage by the treatment element.

  According to the present invention, the hitting operation by the hitting shaft can be stably transmitted from the connecting rod to the arm through the universal joint by means as described above. It is possible to perform massage by stably transmitting various actions by.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing an overall configuration of a chair-type massage machine including a massage mechanism according to an embodiment of the present invention. First, an example of the whole structure of the chair type massage machine in which the massage mechanism of the present invention is used will be described. In addition, in this specification and the document of a claim, front and rear, right and left are used on the basis of the direction when it sees from the user seated on the chair type massage machine 1. FIG. For example, the front side is the front of the seated user, the left side is the left side of the user, and the right side is the right side of the user.

  As shown in FIG. 1, the chair type massage machine 1 according to this embodiment is mainly composed of a seat portion 2, a backrest portion 3, a footrest 4, and an armrest 5. The seat 2 is disposed on an upper portion of a base (not shown), and this base is supported by leg portions 2a provided on both sides of the lower portion. An operation remote controller 6 is provided in the vicinity of the armrest 5.

  The backrest part 3 provided at the rear part of the seat part 2 is such that a part of the body does not protrude outside when the user sits on the seat part 2 in order to support the upper body of the user. It has a size, and its front view is a vertically long, substantially rectangular shape. A lower end portion of the backrest portion 3 is supported by the base by a support shaft (not shown) provided in the rear lateral direction of the seat portion 2. The backrest 3 is configured so as to be able to recline back and forth by rotating about the support shaft. A massage mechanism 7 is provided inside the backrest 3 to give stimulation to the back side of the user to be seated.

  FIG. 2 is an exploded perspective view schematically showing the configuration of the massage mechanism in order to explain the operating principle of the massage mechanism provided in the chair type massage machine shown in FIG. 1, and FIG. It is the front view which showed typically the behavior of the treatment element at the time of a rice cracking operation.

  As shown in FIG. 2, the massage mechanism 7 includes a plurality of roller-shaped treatment elements (treatment portions) 8 that apply mechanical stimulation to the body of the user (one in each of the left and right in this figure, two in total). It has. These treatment elements 8 are respectively attached to the distal ends of left and right arms 9 provided so as to come out in front of the massage mechanism 7. Each arm 9 is rotatably supported by a support shaft 11 in a support hole 10a provided at one end of the kneading connecting rod 10 with an intermediate portion 9a. A spring 12 as an urging member is provided between the kneading rod 10 and the arm 9, and the arm 9 is always urged by the spring 12 so as to swing forward and downward. The other end of the kneading connecting rod 10 is provided with a fitting hole 10b.

  The kneading rod body 10e of the kneading rod 10 is composed of two plate members provided so as to face each other, and a portion that bulges toward the knocking connecting rod 14 is formed on the upper side of the intermediate portion. The bulging portion is provided with a knocking connecting rod support hole 10d, and one end of the knocking connecting rod 14 is supported through the universal joint 15 in the knocking connecting rod support hole 10d.

  The universal joint 15 connects a beat connecting rod 14 that transmits a beat operation by a beat shaft 16 to be described later and a kneading rod 10 that transmits a beat operation by a beat shaft 20 (rotary shaft) to be described later. It is comprised so that a connection state can be maintained, receiving operation | movement. In this embodiment, a ball joint connected to the kneading connecting rod main body 10e is provided at the lower part of the knocking connecting rod 14. The universal joint 15 is constituted by a ball joint, and the end of the knocking connecting rod 14 is connected to the kneading connecting rod body 10e, so that the universal joint 15 has a spherical surface in the entire circumferential direction including the pushing direction and the pulling direction in which the tapping load acts. Support is available. The universal joint 15 may be formed of a flexible joint that can maintain a connected state while being subjected to a striking operation by the striking shaft 16 and a scrambling operation by the scissor shaft 20.

  On the other hand, the striking shaft 16 and the grind shaft 20 extending in the left-right direction are arranged vertically so as to be positioned between the connecting rods 10, 14 provided on the left and right. In this embodiment, the tap shaft 16 and the tap connecting rod 14 are arranged on the upper side, and the shaft 20 and the kneading connecting rod 10 are also arranged on the lower side.

  The tapping shaft 16 disposed on the upper side is formed with eccentric shaft portions 17 at both ends thereof. The eccentric shaft portion 17 has an axis parallel to the axis of the hitting shaft 16 and is formed so that the phase is shifted on the left and right. The hitting connecting rod 14 is provided with a fitting hole 14a in the lateral direction so as to face each other. And the eccentric shaft part 17 formed in the both ends of the tap shaft 16 is rotatably supported by this fitting hole 14a via a bearing (not shown). Further, the hitting shaft 16 is provided with a pulley 16a coaxially at a position biased to one side (left side in the figure) in the left-right direction. The pulley 16a is a motor such as a DC servo motor provided with the pulley 18a. 18 and a belt 19.

  Accordingly, the rotational force of the motor 18 is transmitted to the hitting shaft 16 via the belt 19 to rotate the hitting shaft 16, and the hitting connecting rod 14 is moved substantially vertically by the revolution of the eccentric shaft portions 17 at both ends of the hitting shaft 16. Moving. As a result, the knocking connecting rod 14 swings the kneading connecting rod body 10e on the arm 9 side around the fitting hole 10b. As a result, the kneading rod 10 swings the arm 9, and the treatment element 8 is reciprocated substantially vertically so as to draw an arc. When the motor 18 is rotated at a constant speed, the treatment element 8 reciprocates at a constant period, and this is a hitting operation of the treatment element 8. Further, when the motor 18 is rotated while changing its rotation speed, the treatment element 8 reciprocates at an irregular cycle, and this is the acupressure operation of the treatment element 8.

  In addition, an inclined shaft member 23 having inclined shaft portions 21 formed at both ends thereof is fixed to the lower half of the grind shaft 20 by fixing pins 37. The inclined shaft portion 21 is rotatably supported by a fitting hole 10b provided in the kneading connecting rod 10 via a bearing (not shown).

  The inclined shaft portion 21 is formed of an axis c that is inclined at a predetermined angle θ in the same direction with respect to the axis a of the fir shaft main body 22 on both the left and right sides. The angle θ at which the inclined shaft portion 21 is inclined greatly affects the sense of fir tree. Even if the inclined shaft portion 21 is inserted into the fitting hole 10b of the kneading connecting rod 10, when the rotating shaft 20 is rotated, the magnitude of the conical motion drawn by the axis of the inclined shaft portion 21 differs depending on the angle θ, and the angle θ is large. When the angle θ is small, the treatment element 8 crosses the back of the user. Give the patient a stimulus that performs a small movement.

  That is, as shown in the front view schematically showing the behavior of the treatment element at the time of the kneading operation in FIG. 3, at the time of the kneading operation, the treatment element 8 is moved in the width direction w, the vertical direction h, and the direction orthogonal to the paper surface (shown in FIG. 4). A three-dimensional behavior is performed symmetrically in the front-rear direction f), but the behavior range of the treatment element 8 is determined by the inclination angle θ of the inclined shaft portion 21 formed at both ends of the fir shaft 20, and this treatment element. The sense of firth is determined by the motion range of 8.

  Further, as shown in FIG. 2, a worm wheel 25 is attached to the central portion in the left-right direction of the kneading shaft main body 22. The worm wheel 25 is formed of a helical gear in this embodiment. A worm 26 is provided with the axis of rotation as the vertical direction so as to mesh with the worm wheel 25. The worm wheel 25 and the worm 26 constitute a worm gear mechanism 30.

  A pulley 26a is coaxially provided at the lower end portion of the shaft of the worm 26. The pulley 26a is connected to a motor 27 such as a DC servo motor provided with a pulley 27a by a belt 28. Reference numeral 29 denotes a detection plate that is a part of a rotation sensor that detects the rotational state of the worm 26, and is provided at the upper end of the shaft of the worm 26. As this sensor, a Hall sensor (magnetic proximity switch), an optical sensor, or the like is used.

  Accordingly, the rotational force of the motor 27 is transmitted to the worm 26 via the belt 28, and the rotation of the worm 26 causes the shaft 20 to rotate via the worm wheel 25. Then, as the kneading shaft 20 rotates, the inclined shaft portion 21 rotates so as to draw a conical locus, whereby the kneading connecting rod 10 operates regularly, so that the left and right treatment elements 8 approach and separate from each other. In addition, it moves in a substantially elliptical orbit in the left and right and up and down directions. Such a moving operation is a scrubbing operation of the treatment element 8. The scrubbing operation of the treatment element 8 includes an operation of moving to the front (the person to be treated) when the left and right treatment elements 8 approach each other and moving backward when the left and right treatment elements 8 are separated.

  4 is a perspective view showing the configuration of the hitting connecting rod in the massage mechanism shown in FIG. 2, FIG. 5 is a partially sectional side view showing the configuration of the hitting connecting rod, and FIGS. 6 (a) and 6 (b) are FIG. 6 is a side view showing a bent state of the knocking connecting rod shown in FIG. 5.

  As shown in FIGS. 4 and 5, the knocking connecting rod 14 includes a shaft side portion 60 provided with a fitting hole 14 a for inserting an eccentric shaft portion 17 formed at an end portion of the hitting shaft 16, and the kneading connecting rod 10. It is comprised by the joint side part 61 which connects the two plate-shaped fir rod connecting rod main bodies 10e provided in this by the universal joint 15. As shown in FIG.

  The shaft side portion 60 is provided with a bearing 60 a that rotatably supports the eccentric shaft portion 17 of the hitting shaft 16, and a connection portion 60 b that protrudes toward the joint side portion 61. The shaft side portion 60 is obtained by sandwiching a resin center member 60c from both sides with a metal side member 60d and integrally fixing them with a plurality of bolts 60e (three in this example).

  The joint side portion 61 is formed with a connection support portion 61a that protrudes toward the shaft side portion 60, and a joint portion 61b that is connected to the kneading connecting rod body 10e via the universal joint 15. The connection support portion 61a and the joint portion 61b are formed of a plate material bent in an L shape. The joint side portion 61 is also configured to sandwich the resin-made central member 61c from both sides by the metal joint portion 61b. Locking claws 61d are provided on the opposite shaft side of the joint portions 61b on both sides, and if the shaft side portion is fixed with bolts 61e with these locking claws 61d engaged, The member 61c and the joint portions 61b on both sides are fixed integrally.

  The shaft side portion 60 and the joint side portion 61 are arranged such that the connecting portion 60b of the shaft side portion 60 and the connecting support portion 61a of the joint side portion 61 have an axis in a direction perpendicular to the axis of the beat shaft 16. It is connected by a bending shaft 62 having the same. The bent shaft 62 is a bent portion, and the portion between the shaft side portion 60 and the joint side portion 61 of the hitting connecting rod 14 that is hit by the bent shaft 62 can be bent in a range of a predetermined angle in the axial direction of the hitting shaft 16. It is configured as follows. The position of the bent portion is not limited to this embodiment.

  On the other hand, as shown in FIG. 5, a spherical seat 63 is formed on a resin-made central member 61 c at the joint portion 61 b of the joint side portion 61. The spherical seat 63 is formed so as to have the spherical seat 63 on the entire circumference in a direction intersecting the axial direction of the hitting shaft 16. The direction intersecting the axial direction of the hitting shaft 16 is a direction substantially orthogonal to the axial direction of the hitting shaft 16. A spherical member 15a of the universal joint 15 is rotatably supported by the spherical seat 63. The spherical member 15a is made of metal, and support shafts 15b projecting in the axial direction of the hitting shaft 16 are provided on both sides. In this embodiment, screw portions 15d (FIG. 4) are provided at both ends of the support shaft 15b, and fixed to the knocking connecting rod support hole 10d provided in the kneading connecting rod body 10e of the kneading connecting rod 10 by nuts 15c. .

  Accordingly, by rotating the hitting shaft 16, circumferential power (operation) including power in the pushing and pulling direction acting in the up and down direction of the drawing sheet by the hitting operation transmitted from the eccentric shaft portion 17 to the hitting connecting rod 14 is obtained. The spherical member 15a is received by the entire circumference of the spherical seat 63 formed in a direction intersecting the axial direction of the tap shaft 16 of the tap connecting rod 14. Accordingly, the striking action acting in the direction intersecting the axial center direction of the hitting shaft 16 is stably received on the entire circumference including the pushing and pulling direction in which the load of the hitting action acts on the entire circumference of the spherical seat 63. Therefore, even if the operation of the hitting shaft 16 is stabilized, it can be transmitted to the connecting rod 10. In addition, the universal joint 15 is a combination of the spherical member 15a and the spherical seat 63, so that stable power transmission can be performed with the small universal joint 15.

  As shown in FIGS. 6 (a) and 6 (b), the knocking connecting rod 14 has a joint side with respect to the shaft side portion 60 in a state where the shaft side portion 60 and the joint side portion 61 are connected by a bending shaft 62. The portion 61 can be bent in the axial direction of the hitting shaft. In this way, by providing the bend connecting rod 14 with a bent portion, even when various operations such as the beating operation of the beating shaft 16 and the beveling operation of the bevel shaft 20 are combined, the bend is made around the bend axis to smoothly drive power. I can communicate.

  In addition, since the spherical member 15a can be swung along the spherical seat 63 in the universal joint 15 portion, it can be bent at the intermediate portion of the knocking connecting rod 14 as described above. The main body 10e can swing within a predetermined angle range in an arbitrary direction around the spherical member 15a. The swinging direction of the spherical member 15a of the universal joint 15 is not limited, but the swinging direction of the kneading rod body 10e is limited by the movement of the kneading connecting rod 10, and swings to match the movement. In the figure, the bending shaft 62 and the universal joint 15 are bent in the opposite directions.

  FIG. 7 is a side view showing the operation of the arm in the assembled state of the massage mechanism shown in FIG. 2, and FIG. 8 is a perspective view in the assembled state of the massage mechanism.

  As shown in FIG. 7, the ends 17 and 21 of the hitting shaft 16 and the grind shaft 20 are supported by the fitting hole 14a of the hitting connecting rod 14 and the fitting hole 10b of the scissor connecting rod 10 via bearings 14b and 10f. Has been. At the position of the fitting hole 10b of the kneading connecting rod 10, a kneading connecting rod house 10g is also provided between the kneading connecting rod bodies 10e, and a bearing 10f is provided in the kneading connecting rod house 10g. Further, the plate-like arm 9 supported by the support hole 10a of the kneading connecting rod 10 so as to be swingable by the support shaft 11 is composed of two kneading connecting rods together with an arm guide 9e and a cover 9f (see FIG. 8) having a predetermined thickness. It is provided between the main bodies 10e.

  Furthermore, an arm locking member 13 that restricts the swing of the arm 9 within a predetermined angle range is provided at a lower portion between the kneading rod bodies 10e. As for this arm locking member 13, both sides are in contact with the kneading connecting rod body 10e, an opening 13a is formed at the center, and a support wall 13d is formed on the opposite side of the opening 13a. The arm locking member 13 is supported by the kneading connecting rod body 10e by a support portion 13b and a locking pin 13c.

  The rear end portion 9c of the arm 9 has a narrow side view so as to pass through the opening 13a of the arm locking member 13 provided between the kneading connecting rod main bodies 10e. The arm 9 is locked in a state where the rear end 9c of the arm 9 passing through the opening 13a is in contact with the support wall 13d of the arm locking member 13.

  Therefore, the arm 9 in the unloaded state has the intermediate portion 9 a supported by the support shaft 11, the locking pin 9 b provided at the lower portion thereof, and the locking pin 13 c of the arm locking member 13 provided at the lower portion of the kneading connecting rod 10. The treatment element 8 provided on the front end side is always biased forward and downward by the spring 12 which is a biasing member hung on the back, and the rear end portion 9c is in contact with the support wall 13d of the arm locking member 13. ing. Thereby, the treatment element 8 is always urged toward the user who sits on the front part of the treatment element 8. In this way, by always urging the arm 9 toward the user by the spring 12 as the urging member, even one treatment element 8 on each of the left and right sides can be reliably brought into contact with the user and stable. I can do a massage. The urging member may have other configurations.

  The swing range of the arm 9 supported in this way is from the solid line state (lower limit position) in which the rear end portion 9c of the arm 9 is in contact with the support wall 13d of the arm locking member 13 by the urging force of the spring 12. When the treatment element 8 is pushed, the arm 9 swings, and the contact member 9d provided on the treatment element side of the rear end 9c of the arm 9 contacts the engagement part 13e of the arm engagement member 13. The range of the state (upper limit position) indicated by the two-dot chain line is limited. “s” indicates the stroke of the treatment element 8.

  The arm locking member 13 is made of engineering plastic polyamide resin (PA) or the like. By forming this arm locking member 13 with resin, the impact at the time of arm contact is reduced.

  The connecting rod body 10e of the fir connecting rod 10 is provided with a sensor 39 for detecting whether or not the rear end portion 9c of the arm 9 is present. The sensor 39 is for detecting the swinging state of the arm 9. In this embodiment, the sensor 39 is composed of an optical sensor that emits light from the fir-rod connecting rod body 10 e toward the rear end 9 c of the arm 9. Yes. This optical sensor is configured to emit light in a direction perpendicular to the paper surface shown in the figure, and the arm 9 is biased forward and downward by the force of the spring 12, and the front portion of the sensor 39 is closed by the rear end portion 9c. The arm 9 is configured to be able to detect a state in which the arm 9 is swung upward against the force of the spring 12 and the rear end portion 9c opens the front portion of the sensor 39. The sensor 39 may be any sensor that can detect the swinging state of the arm 9 and may be another sensor such as a Hall sensor (magnetic proximity switch).

  According to this sensor 39, for example, when the user sits on the seat 2 and falls, the arm 9 is swung by pushing the treatment element 8 and the rear end 9c opens the front part of the sensor 39. The change of the treatment element 8 to the user's side and the rear end 9c of the arm 9 closing the front part of the sensor 39 can be detected. For example, the shoulder position of the user can be detected. can do.

  As shown in FIG. 8, the arm portion of the massage mechanism configured as described above includes a front portion of a kneading rod 10 that supports the arm 9 provided with the treatment element 8, and a kneading rod housing 10 g into which the kneading shaft 20 is inserted. A universal joint 15 provided at the lower part of the knocking connecting rod 14 is provided in a state where the lower part of the knocking connecting rod 14 located at the upper part is positioned between the kneading connecting rod bodies 10e in an intermediate part with the rear part of the kneading connecting rod 10 provided with It will be in the state where it was fixed to the fir connecting rod main body 10e. Thus, the knocking connecting rod 14 and the kneading connecting rod 10 are connected to the kneading connecting rod main body 10e via the spherical member 15a of the universal joint 15 having the support shaft 15b fixed by the nut 15c. The spherical seat 63 provided on the 14th side is configured to contact the entire circumference. Accordingly, the force in both directions to be pushed and pulled by the hitting operation of the hitting shaft 16 is reliably received by the contact surface between the spherical seat 63 and the spherical member 15a, so that power transmission of various operations can be stably performed. .

  FIG. 9 is a side view showing the operation of the arm in the assembled state in another example of the massage mechanism of the present invention. The massaging mechanism is different from the massaging mechanism shown in FIG. 7 in that the striking connecting rod 14 and the kneading connecting rod 10 are connected. Note that. The same components as those illustrated in FIG. 7 are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in the drawing, the end portions 17 and 21 of the hitting shaft 16 and the grind shaft 20 are supported by the fitting hole 14a of the hitting connecting rod 14 and the fitting hole 10b of the scissor connecting rod 10 via bearings 14b and 10f. . Further, the plate-like arm 9 supported on the kneading rod 10 so as to be swingable by the support shaft 11 is also seen in the concave rear end portion 9c formed from the middle portion 9a of the arm 9 toward the rear. In the state where the tip of the arm is inserted, the locking pin 9b provided on the arm 9 is supported by being in contact with the kneading connecting rod body 10e.

  The arm 9 is provided on the distal end side by a spring 12 as a biasing member that is hooked on the locking pin 9b and a locking pin 10c provided at the lower portion of the kneading connecting rod 10 while being supported by the support shaft 11. The treatment element 8 is always urged forward and downward.

  The swing range of the arm 9 is such that the treatment element 8 is pushed and the arm 9 is pressed from the solid line state (lower limit position) where the locking pin 9b of the arm 9 is in contact with the connecting rod body 10e with the biasing force of the spring 12. Is shown by a two-dot chain line in which the contact member 9d provided on the upper portion of the arm 9 contacts the upper surface of the kneading connecting rod 10 (in this example, the kneading connecting rod 10 also serves as an arm locking member). The state (upper limit position) range is set.

  In this example, the arm 9 is locked even if the load is dispersed by bringing the two abutting members 9d provided on the arm 9 along the upper surface of the kneading connecting rod 10 into contact with the kneading connecting rod 10. This enables stable arm support. Further, by forming the contact portion of the connecting rod 10 with resin, the impact at the time of contact is reduced. Further, a sensor 39 is provided on the connecting rod body 10e of the kneading connecting rod 10 so as to protrude toward the concave portion 9c of the arm 9, and the swinging state of the arm 9 can be detected by the sensor 39. .

  Further, a connecting member 38 fixed to the kneading rod main body 10e by a bolt 38b is provided at the position of the fitting hole 10b into which the kneading shaft 20 of the kneading connecting rod 10 is inserted, and a protruding portion 38a is provided above the connecting member 38. Is formed. A support shaft 15b of the universal joint 15 provided at the lower portion of the knocking connecting rod 14 is fixed to the protruding portion 38a.

  According to this configuration, the force of the hitting shaft 16 is transmitted from the hitting connecting rod 14 to the kneading connecting rod 10 via the connecting member 38, and the kneading connecting rod 10 swings the arm 9 so that the treatment element 8 is hit. . When the kneading shaft 20 is rotated, the kneading rod 10 swings the arm 9 so that the treatment element 8 is kneaded. Other operations by the treatment element 8 are the same as those shown in FIG.

  In addition, the structure which connects the knocking connecting rod 14 and the kneading connecting rod 10 shown in this FIG. 9 is an example, and another structure may be sufficient.

  FIG. 10 is a front view, partially in section, of the kneading and scoring unit in the assembled state of the massage mechanism shown in FIG. The configuration shown in FIG. 2 is denoted by the reference numeral in FIG.

  As shown in the drawing, the configuration for performing the scrambling operation and the striking operation of the massage mechanism 7 is integrally configured as a scissor / spatling unit 31. The state shown in the figure is shown in a state excluding the configuration relating to the treatment element 8, the arm 9, the fir tree connecting rod 10, and the knocking connecting rod 14 shown in FIG. The casing 32 of the kneading and tapping unit 31 is formed so that the tapping shaft 16 is arranged at the upper part and the tapping shaft 20 is arranged at the lower part.

  The knocking shaft 16 is rotatably supported by the bearing 33 at the upper portion of the casing 32, and the kneading shaft 20 is rotatably supported by the bearing 34 at the lower portion. The hitting shaft 16 is positioned by a bearing 33 whose axial movement is suppressed by the wall surface of the casing 32 and the cover 35. The fir shaft 20 is positioned by a bearing 34 whose movement in the axial direction is suppressed by a cover 36 fixed to the casing 32. A ring collar 65 and a non-metallic washer 66 are provided between the bearings 34 and 33 that support the grind shaft 20 and the knocking shaft 16, and the bearing cover 36 and the cover 35.

  Further, the pulley 16a is provided at one end side of the hitting shaft 16, and the hitting shaft 16 is driven to rotate by rotating the pulley 16a with a motor 18 (FIG. 2) via a belt 19. A worm wheel 25 is provided at the center of the kneading shaft 20, and a worm 26 that meshes with the worm wheel 25 is provided on the back side of the drawing. When the pulley 26a of the worm 26 is rotated by a motor 27 (FIG. 2) via a belt 28, the paddle shaft 20 is rotationally driven. Thus, the relationship between the hitting shaft 16 and the grind shaft 20 is unitized.

  According to such a scrubbing / patching unit 31, as described above, the stroking operation and the acupressure operation of the treatment element 8 are performed by driving the motor 18, and the scoring operation of the treatment element 8 is performed by driving the motor 27. By simultaneously driving the motors 18 and 27, the hitting operation and the scissor operation of the treatment element 8, or the acupressure operation and the scissor operation are combined and performed. Of course, each operation can be performed independently.

  FIG. 11 is a front perspective view showing the configuration of the massage mechanism 7 provided in the chair type massage machine 1 shown in FIG. As shown in FIG. 1, a substantially rectangular frame 54 extending from the rear portion of the seat portion 2 to the upper portion of the backrest portion 3 is provided in the backrest portion 3 of the chair type massage machine 1. The massage mechanism 7 is provided on a frame-like lifting platform 40 that moves up and down along the body 54. Accordingly, the massage mechanism 7 is configured to be able to move up and down in the height direction of the user within the backrest 3.

  As shown in FIG. 11, the massage mechanism 7 includes a swing frame 42 provided on a frame stay 41 supported by a lifting platform 40. The swing frame 42 is provided on the left and right, and the casing 32 of the massaging / spatling unit 31 of the massaging mechanism 7 is bolted to the center rear surface side of the I-shaped support plate 43 fixed to the left and right swing frames 42 with bolts 43a. It is fixed at 32a.

  In this embodiment, a rack 44 is provided at the upper end of the swing frame 42. The rack 44 is configured to swing the swing frame 42 in the front-rear direction around the frame stay 41 by the rotation of the pinion gear 45a of the intermediate idle reduction unit 45 that meshes with the teeth formed on the rack 44. Yes. The pinion gear 45a of the intermediate idle reduction unit 45 is rotated by a gear (not shown) provided on the front / rear drive shaft 58 supported by the lift table 40 with a bearing 57. The front / rear drive shaft 58 is driven by a front / rear movement motor 47 via a worm speed reducer 46 provided on the upper left side of the lifting platform 40 shown in the figure. 58 a is a support shaft of the intermediate idle reduction unit 45, and both ends are fixed to the lifting platform 40.

  Five guide rollers 48 and 49 are provided on the left and right sides of the lifting platform 40, respectively. In the illustrated example, a total of two guide rollers 48 for regulating the horizontal movement of the lifting platform 40 are provided in the upper and lower parts, and a total of three guide rollers 49 for regulating the forward and backward movements are provided in the upper and lower parts and the intermediate part. .

  In addition, pinion gears 50 are provided on both sides of the lower part of the lifting platform 40 (only the right side is shown). The pinion gear 50 is provided at both ends of an elevating drive shaft 51 provided on the elevating platform 40 via a bearing 51a. The elevating drive shaft 51 is driven by an elevating motor 53 via a speed reducer 52. .

  On the other hand, the frame body 54 is provided with guide rails 54 a that are arranged on the left and right sides with a predetermined interval and extend in the vertical direction along the backrest 3. A rack 55 is provided on the back surface of the guide rail 54a. The guide rail 54a and the rack 55 are provided over the entire length in the vertical direction in which the lifting platform 40 moves.

  And the guide rollers 48 and 49 of the said raising / lowering stand 40 are provided so that it can move to an up-down direction along the inner surface of the guide rail 54a. Further, the pinion gears 50 provided on both lower side portions of the lifting / lowering table 40 mesh with the rack 55, and the pinion gear 50 is driven by the lifting / lowering motor 53, so that the lifting / lowering table 40 moves up and down in the vertical direction of the backrest unit 3. To do.

  As shown in FIG. 1, the control device 56 that controls the rotation speed and rotation direction of these motors 18, 27, 47, and 53, the position and rotation state of the arm 9, and the like. It is provided inside. The control device 56 includes a CPU, a ROM, a RAM, an input / output interface, and the like. In addition, a signal from the operation remote controller 6 operated by the user is also input to the control device 56, and each unit is driven and controlled so that the massage machine 1 performs a desired operation.

  With such a configuration, the treatment of the massage mechanism 7 is performed by raising and lowering the lifting / lowering platform 40 including the massage mechanism 7 in the vertical direction of the backrest 3 while the user is leaning on the backrest 3. A massage operation can be performed by moving the child 8 in the vertical direction of the back of the user.

  According to the massaging mechanism 7 configured as described above, a spherical seat is provided at the connecting portion between the kneading connecting rod 10 that supports the arm 9 provided with the treatment element 8 and the tapping connecting rod 14 that transmits the power of the tapping shaft 16. Since the universal joint 15 can receive power on the seating surface of the entire circumference of 63, stable power transmission can be performed, and when the treatment element 8 is operated to strike at high speed, or combined with the fir tree operation, the operation is performed. Even in cases, stable power transmission is possible.

  In addition, for example, even if there are one treatment element 8 provided on the arm 9 on each of the left and right sides, the arm 9 can be stably swung so that the treatment element 8 faces the front lower part. In order to obtain effects such as fatigue recovery and relaxation, various massage operations can be performed stably.

  In addition, the said embodiment is an example and the treatment element 8 provided in the arm 9 is not restricted to one each, The structure which provided each two is applicable. Moreover, the said embodiment is an example and the arrangement configuration with the striking shaft 16, the shape of the arm 9, the number of the treatment elements 8, etc. are not limited to the said embodiment.

  Further, in the above-described embodiment, the hitting shaft 16 and the hitting connecting rod 14 are disposed on the upper side, and the grind shaft 20 and the kneading connecting rod 10 are also disposed on the lower side. However, the present invention can be applied to the reverse configuration.

  Furthermore, the above-described embodiment shows an example, and various modifications can be made without departing from the gist of the present invention, and the present invention is not limited to the above-described embodiment.

  The massage mechanism according to the present invention can be applied to a massage machine that wants to more stably transmit the striking motion of the striking shaft and the scissor motion of the scissor shaft to the arm.

It is a perspective view which shows the whole structure of the chair type massage machine provided with the massage mechanism which concerns on embodiment of this invention. It is the disassembled perspective view which showed typically the structure of the massage mechanism in order to demonstrate the operation | movement principle of the massage mechanism with which the chair type massage machine shown in FIG. 1 was equipped. It is the front view which showed typically the behavior of the treatment element at the time of the rice padding operation | movement by the massage mechanism shown in FIG. It is a perspective view which shows the structure of the knocking connecting rod in the massage mechanism shown in FIG. It is the side view which carried out the partial cross section which shows the structure of the knocking connecting rod in the massage mechanism shown in FIG. (a), (b) is a side view which shows the bending state of the knocking connecting rod shown in FIG. It is a side view which shows operation | movement of the arm in the assembly state of the massage mechanism shown in FIG. It is a perspective view in the assembly state of the massage mechanism shown in FIG. It is a side view which shows operation | movement of the arm of the assembly state in the other example of the massage mechanism of this invention. It is the front view which carried out a partial cross section of the fumigation and tapping unit in the assembly state of the massage mechanism shown in FIG. It is a perspective view of the front side which shows the structure of the massage mechanism with which the chair type massage machine shown in FIG. 1 was equipped.

Explanation of symbols

1 Chair type massage machine 2 Seat part 3 Backrest part 4 Footrest (leg rest)
DESCRIPTION OF SYMBOLS 5 Armrest 6 Operation remote control 7 Massage mechanism 8 Therapeutic element 9 Arm 10 Stirring rod 11 Support shaft 12 Spring 13 Arm locking member 14 Stroke connecting rod 15 Universal joint 15a Spherical member 16 Stroke shaft 17 Eccentric shaft portion 18 Motor 19 Belt 20 Milling shaft DESCRIPTION OF SYMBOLS 21 Inclined shaft part 22 Grain shaft main body 23 Inclined shaft member 25 Worm wheel 26 Worm 27 Motor 28 Belt 29 Rotation sensor 30 Worm gear mechanism 31 Combing / tapping unit 32 Casing 33, 34 Bearing 35, 36 Cover 37 Fixing pin 38 Connecting member 39 Sensor 40 Lifting table 41 Frame stay 42 Oscillating frame 43 Support plate 44 Rack 45 Intermediate idle reduction unit 46 Worm reduction gear 47 Front and rear drive motor 48, 49 Guide roller 50 Pini On-gear 51 Elevating drive shaft 52 Reduction gear 53 Elevating motor 54 Frame 55 Rack 56 Controller 57 Bearing 58 Front / rear drive shaft 60 Shaft side 61 Joint side 62 Bending shaft 63 Spherical seat 65 Ring collar 66 Non-metallic washer

Claims (4)

A kneading rod that supports the arm provided with the treatment element and transmits the kneading motion of the kneading shaft to the arm;
A striking connecting rod that transmits the striking motion of the striking shaft is provided.
The hitting connecting rod and the kneading connecting rod are connected by a universal joint having a spherical seat on the entire circumference in a direction intersecting the axial direction of the hitting shaft ,
The universal joint is
A spherical member that supports the entire circumference in a direction that intersects the axial direction of the shaft that is struck by the spherical seat;
It has a support shaft that protrudes in the axial direction of the tapping shaft from the spherical member,
A grind connecting rod is also fixed to the support shaft,
The massaging connecting rod swings around a spherical member.
The knocking connecting rod, a joint side portion provided with the universal joint,
It comprises a shaft side portion that supports the end portion of the hitting shaft,
The massage mechanism according to claim 1, wherein a bending portion that bends in a range of a predetermined angle in the axial direction of the hitting shaft is provided between the shaft side portion and the joint side portion.
The arm is supported by the kneading connecting rod so as to be swingable,
A biasing member that biases the arm to swing downward is provided between the arm and the kneading connecting rod.
The massage mechanism according to claim 1 or 2 , further comprising an arm locking member that restricts upward swinging of the arm by a predetermined angle.
The backrest includes the massage mechanism according to any one of claims 1 to 3 ,
A massage machine provided with a control device for driving and controlling the massage mechanism.

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