JP2018000509A - Mechanical unit of massage machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mechanical unit capable of adjusting positions of treatment elements with respect to a user.SOLUTION: Both ends of a tilting shaft 22 supporting a drive part 50 and a rotation shaft 23 related to the tilting of the driver part are supported by two independent base frames 25, 26. A largeness of a direction that is perpendicular to the tilting shaft and the rotation shaft and also corresponds to the front and rear direction of a backrest part in the respective base frames is allowed to be larger than a largeness of a direction that is parallel to the tilting shaft and the rotation shaft. Consequently, even in a state where force to change the mutual position relation between the tilting shaft and the rotation shaft from a drive part side is applied to the base frames, the position relation between the tilting shaft and the rotation shaft is kept without deforming the base frames to thereby keep a proper state concerning the connection and linkage of respective mechanism parts. Then, abnormal force is not applied to the respective parts so as to prevent the damage of the parts and also reliability and stability are improved in an actuation of a massage machine.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a mechanical unit of a massage machine that performs massage to a user by moving a treatment element such as a kneading ball, and particularly relates to an apparatus that can adjust the position of the treatment element with respect to the user.

  In a chair-type massage machine that massages while supporting the user's body, the massaging ball as a treatment element usually provided on the backrest part is moved forward and backward (with respect to the user side) The amount of protrusion to the user can be adjusted), and the strength of treatment desired by the user can be obtained. With such a massage machine, the mechanism for adjusting the advancing and retreating of the kneading balls is supported by a drive unit that can tilt the kneading balls during massage, and a rack-like tooth portion is provided on the driving portion. A small gear (pinion gear) that is meshed with the gear is arranged, and the small gear is rotated on a predetermined rotation shaft, and the meshing tooth portion is moved to tilt the drive unit together with the kneading balls, so that the kneading balls are placed on the backrest portion. Many mechanisms were used to allow forward and backward movement. One example of a massage machine that employs such a kneading ball advance / retreat mechanism is disclosed in Japanese Patent Application Laid-Open No. 2007-6975.

JP 2007-6975 A

  As shown in the above-mentioned patent document, the conventional massage machine is capable of tilting the drive unit to enable the user to adjust the kneading ball as a treatment element with respect to the user, and a tooth portion provided on the drive unit. It had the structure which can rotate the meshing small gear on a rotating shaft. In addition, in order to adjust the position of the kneading balls in the vertical direction of the backrest portion according to the user's physique, the drive portion is configured to be a part of a mechanical unit that moves up and down within the backrest portion. Specifically, the drive unit is attached to a flat plate-like base portion that can be moved up and down within the backrest portion, and can be moved up and down together with the kneading balls. In this case, in order to arrange the drive unit to be tiltable, the central axis of tilting of the drive unit is supported by the base unit, and in addition, a rotation shaft provided with a small gear for moving the drive unit is supported by the base unit. It was.

  In the machine unit in such a conventional massage machine, the drive unit is supported by a flat base portion, so that it is difficult to obtain rigidity, and it is necessary to reduce the weight of the machine unit in order to move up and down. Yes, the base part, which is a part of it, may be difficult to give high rigidity that leads to an increase in weight, and if a large reaction force that slightly exceeds the design value is applied to the kneading balls during massage, the strength will be insufficient There was a fear. Specifically, the force applied to the kneading balls is transmitted from the drive unit to the base through the tilting central axis and rotating shaft, but due to the positional relationship with the kneading balls, the tilting central axis and the rotating shaft are in a positional relationship between the axes on the base. You will receive the power to change. For this reason, when a stronger force than expected is applied from the kneading ball side, the base part is deformed and the positional relationship of each part on the base part cannot be maintained, and together with the deflection of the tilting axis and the rotating axis itself, for example, There is a risk of damage to the parts due to insufficient coupling between the mechanical parts, such as the meshing state of the teeth on the drive part and the small gear on the rotating shaft side becomes insufficient, and the force cannot be properly transmitted between the parts. Had the problem of being.

  The present invention was made in order to solve the above-mentioned problems, and for the mechanism part supporting each axis related to the tilting of the drive unit that operates the treatment element, the structure is simplified and the strength is increased and the deformation is made difficult. An object of the present invention is to provide a mechanical unit of a massage machine that can maintain the connection of mechanical parts and prevent breakage, and can improve the reliability and stability of the operation related to massage.

  A mechanical unit of a massage machine according to the disclosure of the present invention is disposed on the backrest part in a chair-type massage machine including at least a seat part and a backrest part, and moves a treatment element to a user to perform a predetermined massage. In the machine unit of the massage machine to be executed, a drive unit that operates the treatment element, and a tilting shaft that is arranged in a direction perpendicular to the vertical direction and the front-rear direction of the backrest unit and supports the drive unit so as to be tiltable. A plurality of teeth formed side by side in the same tooth form as an external gear with a predetermined pitch circle diameter whose center coincides with the tilt axis, and a tooth portion fixedly disposed outside the drive portion, and the tilt A predetermined rotation shaft disposed in the vicinity of the tooth portion as a direction parallel to the shaft, and a rotation shaft disposed around the rotation shaft and meshing with the tooth portion; One drive A pinion gear that is rotationally driven by a source, and a member whose longitudinal direction is perpendicular to the tilting shaft and the rotating shaft, and rotatably supports one end portion of the tilting shaft and one end portion of the rotating shaft. The first base frame is a member whose longitudinal direction is perpendicular to the tilting shaft and the rotation shaft, and rotatably supports the other end portion of the tilting shaft and the other end portion of the rotation shaft. A second base frame, and each of the first and second base frames has a plurality of plane portions parallel or perpendicular to the tilt axis and the rotation axis, and is perpendicular to the tilt axis and the rotation axis. A plurality of corners that are continuous in a direction formed by the planar portions intersecting each other, and the plurality of planar portions have a predetermined size that exceeds the axial distance in the vertical direction of the back portion of the tilting shaft and the rotation shaft. And An arrangement including at least one plane portion parallel to the moving axis and the rotation axis, and another plane portion perpendicular to the tilting axis and the rotation axis, wherein the one plane portion is placed along the back and up and down direction; The one plane portion and the other plane portion are arranged so as to directly intersect each other at a predetermined corner portion, and with respect to the size of the direction parallel to the tilt axis and the rotation axis of the one plane portion, It is formed by increasing the size of the direction that is perpendicular to the direction in which the predetermined corners are continuous in the other plane portion.

  Thus, according to the disclosure of the present invention, with respect to the drive unit that moves the treatment element, the tilting shaft that supports the drive unit and the both ends of the rotation shaft that is related to the tilting of the drive unit are supported by two independent base frames. The direction of each base frame in the direction perpendicular to the tilting axis and the rotation axis and corresponding to the front-rear direction of the backrest is larger than the size of the direction parallel to the tilting axis and the rotation axis. By making the base frame difficult to deform with respect to the force applied in the direction perpendicular to the tilt axis or the rotation axis, a large reaction force is applied to the treatment element to relatively move the drive unit, and the tilt axis from the drive unit side. Even when a force is applied to the base frame to change the positional relationship between the rotating shaft and the rotating shaft, the positional relationship between the tilting shaft and the rotating shaft on the base frame is maintained without deformation of the base frame. Connection and interlocking of each mechanical component can be maintained in an appropriate state, and an abnormal force is not applied to each component, so that the component can be prevented from being damaged, and the drive unit can be reliably tilted for adjusting the treatment element position. This improves the reliability and stability of massage machine operation.

  Moreover, the mechanical unit of the massage machine according to the disclosure of the present invention has a substantially box-shaped housing that surrounds the internal mechanism part that operates the treatment element from the outside, if necessary, and the housing includes: A plurality of outer shell members are connected in a direction parallel to the tilting axis and the rotation axis and integrally formed, and among the outer shell members forming the housing, a member closest to the first base frame is The end portion facing the first base frame is formed as a continuous side surface in a direction perpendicular to the tilting axis and the rotation axis, and the second base frame of the outer shell member constituting the housing is formed on the second base frame. The closest member is such that the end facing the second base frame is formed as a continuous side surface oriented in a direction perpendicular to the tilt axis and the rotation axis.

  Thus, according to the disclosure of the present invention, the outer peripheral housing in the drive unit is formed by a combination of a plurality of outer shell members, and each outer shell member is connected and integrated in a direction parallel to the tilting axis and the rotation axis. And an end portion facing the base frame in the outer shell member closest to the first base frame and an end portion facing the base frame in the outer shell member closest to the second base frame, respectively. The side surface portions are formed in a direction that is perpendicular to the rotation axis and the side surfaces are less likely to be deformed even if a force is applied in a direction that is perpendicular to the tilt axis and the rotation axis. Even if an attempt is made to deform the housing itself as a reaction force from the child side is applied to the housing as a stress in a direction perpendicular to the tilt axis and the rotation axis, the side surface portion of the outer shell member that continues in parallel with the direction of the force is So In addition to suppressing the deformation of other parts of the outer shell member by maintaining the shape, the connecting surface of each outer shell member is parallel to the direction of the force, and the outer shell members are excessive between adjacent outer shell members. It is difficult to generate a force that moves closer to or away from the housing, and it is possible to reliably prevent each outer shell member connected to the housing from being deformed and damaged, and to stably perform tilting with a treatment element as a drive unit. Can be made.

  In addition, in the mechanical unit of the massage machine according to the disclosure of the present invention, the tooth portion faces one side surface portion near the first base frame and the second base frame in the housing as necessary. It is fixedly disposed on one or both of the other side surface vicinity portions.

  As described above, according to the disclosure of the present invention, the tooth portion is disposed in the vicinity of the side surface portion facing the base frame of the housing, and the tooth portion receiving the force in the direction perpendicular to the tilting shaft and the rotation shaft is provided on the side surface. By supporting it by integrating it with the part, the drive part tries to tilt by the reaction force from the treatment element side, and the tooth part can be relatively applied in a direction perpendicular to the rotation axis from the pinion gear side. Even in the situation, the position of the tooth portion on the housing does not change as the side surface portion of the housing near the tooth portion is difficult to deform, and the housing is deformed and damaged based on the force applied to the tooth portion. In addition, the positional relationship between the tooth portion and the pinion gear can be maintained, and the drive portion can be appropriately tilted based on the transmission of the driving force by the pinion gear and the tooth portion.

  In addition, the mechanical unit of the massage machine according to the disclosure of the present invention is configured so that the first and second base frames are in an upright state by bending a plurality of outer peripheral portions of a predetermined-shaped metal flat plate. In the molded body to be obtained, the one flat portion in each base frame is formed as a remaining portion that has not been raised in the metal flat plate, and the other flat portion in each base frame has a plurality of portions. A plurality of standing parts including one of the standing parts and the other flat part are bent so that each of the standing parts and the one flat part have at least a groove-shaped cross-sectional shape. It is what is done.

  As described above, according to the disclosure of the present invention, each base frame is formed by bending a metal flat plate to form a plurality of upright portions and partially having a groove-shaped cross section, and is perpendicular to the tilting axis or the rotation axis. By adopting a frame structure that gives rigidity to the force applied in the direction of the movement, even if the drive part receives force due to tilting of the drive part or operation of the treatment element, each base frame has resistance to bending stress. It will work as a material, the deformation of the base frame can be reliably suppressed, and the mechanical unit has a lighter and simpler structure while ensuring that the positional relationship between the tilt axis and the rotation axis on the base frame does not change carelessly This can reduce the manufacturing cost.

  In addition, in the mechanical unit of the massage machine according to the disclosure of the present invention, the rotating shaft is pivotally supported by a bearing portion disposed on one of the first and second base frames, as necessary, and a base Connected to and supported by a speed reduction mechanism disposed on the other side of the frame, the one drive source is a motor, and the output shaft of the motor is connected to the speed reduction mechanism to drive the rotating shaft. The one motor is supported by overlapping the other output of the base frame with the output shaft oriented at right angles to the rotation shaft, and the speed reduction mechanism is connected to the motor output shaft. And a worm wheel that meshes with the worm, and one or a plurality of speed reducers disposed between the worm wheel and the rotating shaft and disposed at a position shifted in a direction parallel to the rotating shaft with respect to the worm wheel. And the speed reduction mechanism portion serves as a bearing for the rotating shaft and is positioned around the rotating shaft end portion, and transmits the rotation from the speed reducing step portion to the rotating shaft. It is something to support.

  As described above, according to the disclosure of the present invention, the rotation shaft is supported by the bearing portion and the speed reduction mechanism portion on each base frame, and the motor as the drive source is connected to the speed reduction mechanism portion, and is oriented in a direction perpendicular to the rotation shaft. By transmitting the driving force from the motor output shaft to the rotating shaft through the worm and worm wheel of the speed reduction mechanism, and further through the speed reduction step, the reduction ratio can be increased without increasing the size of the worm wheel. The amount of protrusion of the speed reduction mechanism in each direction perpendicular to the rotation axis, which mainly depends on the size of the worm wheel, can be suppressed, and the number of protrusions in the mechanical unit can be reduced. In addition, by providing a reduction step section and setting a large reduction ratio without incurring an increase in the size of the worm wheel, it is possible to reduce the size of a motor that tends to increase in size as the rated rotation speed decreases. The deceleration stage is arranged in a direction parallel to the rotation axis that does not easily affect the overall size of the machine unit with respect to the worm wheel, thereby ensuring a large reduction ratio as a reduction mechanism unit. As a result, the size of the entire machine unit can be reduced.

  Further, the mechanical unit of the massage machine according to the disclosure of the present invention can be rotated around a central axis parallel to the tilting axis, if necessary, on the outer portions of the first and second base frames, respectively. A roller portion that is disposed and is rotationally driven by a predetermined other drive source, the drive portion being attached to and supported by the tilt shaft so as to be relatively rotatable, and the tilt shaft serving as the first and second shafts. The base frame is connected to a speed reduction mechanism disposed on one of the base frames, and is supported by a bearing disposed on the other of the base frames so as to pass through the first and second base frames. The roller portions are respectively attached to both ends, and can be driven by the other drive source attached to the first or second base frame, and also serves as a central axis of the roller portion. Driving The source is another motor, the output shaft of the motor is connected to the speed reduction mechanism unit, and the tilting shaft can be driven, and the other motor has a base frame in which the output shaft is oriented at right angles to the tilting shaft. The speed reduction mechanism is supported so as to overlap one of the worm, the worm connected to the output shaft of the motor, the worm wheel meshing with the worm, and the worm wheel shifted in a direction parallel to the tilt axis. One or a plurality of speed reduction steps disposed between the worm wheel and the tilting shaft, and the speed reduction mechanism also serves as a bearing for the tilting shaft. It is located between the housing of the drive unit and the other flat part of one of the base frames, and supports the end of the tilting shaft while transmitting the rotation from the decelerating step to the tilting shaft. Also An arrangement in which the roller portion contacts each guide frame so as to be able to run up and down, and at least the tilting shaft and the drive portion are sandwiched between the guide frames with respect to a pair of guide frames respectively disposed on the left and right inside the mounting portion. The backrest portion is supported so as to be movable in the vertical direction.

  As described above, according to the disclosure of the present invention, the roller portion that can rotate about the predetermined center axis is disposed on each outer portion of the base frame, and the tilting shaft that supports the drive portion so as to be tiltable is the roller. The roller unit is driven by a drive source so that the roller unit can be driven to rotate, and the roller unit can run up and down with respect to a pair of guide frames inside the backrest unit. A mechanism part that rotationally drives the roller part separately because the tilting shaft that supports the driving part forms the central axis of the roller part and is used to transmit the driving force from the driving source to the roller part while allowing the backrest part to move vertically. It is not necessary to dispose the machine unit, and the machine unit can have a simple structure, thereby reducing the cost. In addition, the tilting shaft is supported by the bearings and the speed reduction mechanism on each base frame, and the motor as a drive source is connected to the speed reduction mechanism, and the worm of the speed reduction mechanism from the motor output shaft oriented perpendicular to the tilting shaft. By transmitting the driving force to the tilting shaft through the worm wheel and the speed reduction step, it is possible to increase the reduction ratio without increasing the size of the worm wheel by increasing the speed of the worm wheel, mainly to the size of the worm wheel. The amount of protrusion of the speed reduction mechanism in each direction perpendicular to the tilting axis can be suppressed, and the protrusion of the mechanical unit can be reduced. Furthermore, by providing a reduction gear step and setting a large reduction ratio without incurring an increase in the size of the worm wheel, it is possible to reduce the size of a motor that tends to increase in size as the rated speed decreases. The speed reduction stage is arranged in a direction parallel to the tilt axis that does not affect the overall size of the machine unit with respect to the worm wheel, and the speed reduction mechanism itself is also connected to the other flat part of the base frame and the drive part. By being provided around the tilt axis, it is not necessary to increase the size of the machine unit while ensuring a large reduction ratio as the speed reduction mechanism, and the entire machine unit can be made compact.

  In addition, the mechanical unit of the massage machine according to the disclosure of the present invention is disposed over the entire length of the one plane portion on the one plane portion of each of the first and second base frames as necessary. A guide body projecting a predetermined height from the one flat surface portion toward the front side of the backrest portion, and both end portions in the longitudinal direction of the one flat surface portion of the guide body are rounded and curved surface shapes. In addition, the curved surface-shaped portion is positioned in the vicinity of the end face of the base frame adjacent to both ends in the longitudinal direction of one plane portion.

  As described above, according to the disclosure of the present invention, the guide body is disposed on one flat surface portion of each base unit, and the guide body is formed on one flat surface while the end portion of the guide body is formed into a curved shape continuous to the end surface of the base frame. When the machine unit moves up and down the backrest part, the back part of the skin part of the backrest part approaches the base frame by positioning the guide body in front of the backrest part in each base frame as a protruding state from the part. Even so, the guide body is interposed between the skin part and the base frame to prevent contact between the skin part and the surface of the base frame, and the skin part can be protected, and the user's body can be attached to the base frame through the skin part. It is also possible to prevent the user from touching and to prevent the user from feeling uncomfortable due to contact with the base frame. In addition, when the curved surface shape portion of the end portion of the guide body is disposed in the vicinity of the end surface of the base frame, and the skin portion approaches the end surface of the base frame, the curved shape portion of the protruding guide body contacts the skin portion and the base frame The skin part can be kept away from the end face and its edge part, the relative movement between the guide body and the skin part when moving up and down can be made smooth, and the back part of the skin part by the base frame end part Scratch can be surely prevented.

It is a perspective view of the massage machine to which the machine unit concerning one embodiment of the present invention is applied. It is a block diagram of the massage machine to which the machine unit concerning one embodiment of the present invention is applied. It is a perspective view of the front side of the machine unit which concerns on one Embodiment of this invention. It is a front view of a machine unit concerning one embodiment of the present invention. It is a left view of the machine unit which concerns on one Embodiment of this invention. It is a top view of the machine unit concerning one embodiment of the present invention. It is a bottom view of the machine unit concerning one embodiment of the present invention. It is a perspective view of the back side of the machine unit concerning one embodiment of the present invention. It is a partially omitted rear view of a mechanical unit according to an embodiment of the present invention. It is positional relationship explanatory drawing of the side edge part of the machine unit which concerns on one Embodiment of this invention, and a guide frame. It is an addition state explanatory view of the force to a rotating shaft in the situation where an external force is added to the kneading ball of the machine unit concerning one embodiment of the present invention.

Hereinafter, a mechanical unit of a massage machine according to an embodiment of the present invention will be described with reference to FIGS.
In each of the drawings, a mechanical unit 10 according to the present embodiment is disposed inside a backrest 13 of a chair-type massage machine 1 that supports a seated user, and massages by moving the kneading balls 20 as the treatment elements. It can be executed.

  The massage machine 1 having the machine unit 10 according to this embodiment includes a base 11 that is placed on the floor and stably supports the entire chair, and a user's buttocks above the base 11. A seat portion 12 that supports the user's back, a backrest portion 13 that supports the user's back on the back side of the seat portion 12, an armrest portion 14 that supports the user's elbow and forearm portion on the left and right sides of the seat portion 12, and the seat portion 12. Operation related to massage in a plurality of treatment means mounted on the front side of the leg, such as a leg support unit 15 that supports the user's leg, an operation unit 30 that accepts various operation inputs of the user, and the mechanical unit 10 It is a structure provided with the control part 40 controlled based on contents, such as an input and recording information.

  The base 11 is configured to integrally support the seat 12, the backrest 13, the armrest 14, and the leg support 15 that constitute each part of the chair. The seat 12 is attached to the base 11 so that the inclination angle of the seat can be adjusted, and massage is performed by a built-in treatment means while supporting the user's buttocks and thighs on the seat. Is. As a treatment means of this seat part 12, it is the structure provided with the air cell 71 for hips which operate | moves by supply and discharge of air, and the air cell 72 for thighs. An air pump 70 that operates these air cells by supplying and discharging air is disposed in a space below the seat portion 12.

  The backrest portion 13 has a surface shape that matches the shape of the human back and is arranged so that the inclination angle can be adjusted with respect to the base portion 11 and the seat portion 12, and a treatment means for performing massage is provided therein. It is the composition provided.

  Inside the backrest 13, a mechanical unit 10 in which a pair of left and right kneading balls 20 as a treatment element and a drive unit 50 for operating the same are integrated, and the mechanical unit 10 is supported so as to be movable in the vertical direction of the backrest 13. However, a frame-like backrest frame 13a that supports each part of the backrest from the inside, and a back air cell 73 and a waist air cell 74 that are operated by supplying and discharging air by the air pump 70 are provided. Among these, the machine unit 10, the back air cell 73, and the waist air cell 74 respectively constitute treatment means for performing massage.

  In addition, a pair of side walls provided with treatment means such as air cells on the inner side facing the user are provided on the left and right sides of the backrest 13 so as to protrude from the user's upper arm. You can also make it possible to massage.

  The backrest frame 13a hangs a plurality of horizontal frames in a horizontal direction between a pair of left and right guide frames 13b that support the machine unit 10 in the vertical direction of the backrest 13 and restrain the movement in the other direction. It is handed over and connected together to form a substantially ladder-like frame structure.

  The guide frame 13b has a substantially U-shaped cross-sectional shape and is formed in a longitudinal shape along the surface of the backrest portion 13 in accordance with the shape of the back of the person, and a pair is disposed on the left and right inside the backrest portion. This is a configuration. The mechanical unit 10 is disposed so as to be movable along the guide frame 13b in an arrangement between the pair of guide frames 13b. On the inner periphery of the guide frame 13b, a resin rack 13c is arranged with a length extending over the vertical movement range of the machine unit 10.

  These guide frames 13b allow the machine unit 10 to move in the vertical direction of the backrest portion within the backrest portion 13 and support the movement in the other direction in a restricted manner.

  The mechanical unit 10 includes a pair of left and right kneading balls 20 that give the user stimulation such as kneading and hitting, a pair of left and right kneading ball support arms 21 that support the kneading balls 20 in a protruding state, and the kneading ball support arms. A drive unit 50 that moves the kneading balls 20 in response to massage such as hitting and the like, and a tilting shaft 22 that is arranged in a direction perpendicular to the vertical direction of the backrest and supports the drive unit 50 so as to be tiltable. And a tooth portion 54 which is formed as the same tooth profile arrangement as the external gear whose center coincides with the tilting shaft 22, and which is fixedly disposed on the outer side of the drive unit 50, and the tooth portion 54 has a direction parallel to the tilting shaft 22. A rotating shaft 23 disposed in the vicinity, a pinion gear 24 disposed so as to be rotatable around the rotating shaft 23 and meshing with the tooth portion 54, one end portion of the tilting shaft 22 and one end portion of the rotating shaft 23 are respectively connected. Rotating support A first base frame 25, a second base frame 26 that rotatably supports the other end of the tilting shaft 22 and the other end of the rotary shaft 23, and first and second base frames 25, 26, the guide bodies 17 and 18 which are arranged in a state of projecting by a predetermined height toward the front side of the backrest 13 on the predetermined flat surface portions 25a and 25b, and the first and second base frames 25 and 26. It is the structure provided with the roller part 27 arrange | positioned so that the guide frame 13b can run up and down in the outer part.

  The drive unit 50 is a substantially box-shaped housing 51 that surrounds an internal mechanism that operates the kneading balls 20 from the outside, and is attached to the housing 51, and massages the kneading balls 20 based on the control of the control unit 40. A kneading motor 63 for generating a driving force to be performed and a tapping motor that is disposed in the housing 51 and generates a driving force for causing the kneading ball 20 to perform a massage of tapping based on the control of the control unit 40. A rubbing mechanism which is disposed in the motor 64 and the housing 51 and moves the grind balls 20 via the grind ball support arm 21 based on the driving force from the grind motor 63 and the hitting motor 64, and It is a structure provided with a striking mechanism (not shown). In addition, about each motor and internal mechanism in the drive part 50, it is the same as that used for a well-known massage machine, and detailed description is abbreviate | omitted.

  The housing 51 is formed by integrally combining a plurality of outer shell members 52 and 53 in a direction parallel to the tilting shaft 22 and the rotation shaft 23, and is supported in a state in which the housing 51 can rotate relative to the tilting shaft 22. It is the composition which is done. Accordingly, the drive unit 50 including the housing 51 can be tilted with respect to the rotary shaft 23 and the first and second base frames 25 and 26.

  Of the outer shell members forming the housing 51, the outer shell member 52 closest to the first base frame 25 has an end facing the first base frame 25 at right angles to the tilting shaft 22 and the rotation shaft 23. It is formed as a continuous side surface portion 52a in the orientation. Of the outer shell members forming the housing 51, the outer shell member 53 closest to the second base frame 26 has an end facing the second base frame 26 with respect to the tilting shaft 22 and the rotating shaft 23. It is formed as a continuous side surface portion 53a oriented at a right angle.

  Further, in the housing 51, there are tooth portions in the vicinity of the side surface portion 52 a of the outer shell member 52 facing the first base frame 25 and in the vicinity of the side surface portion 53 a of the outer shell member 53 facing the second base frame 26. 54 are fixedly arranged.

  The tooth portion 54 has a plurality of teeth formed side by side in the same tooth form as an external gear having a predetermined pitch circle diameter whose center coincides with the tilting shaft 22, and is fixedly disposed on the housing 51 to be outside the drive portion 50. It is the structure arrange | positioned. The tooth portion 54 meshes with the pinion gear 24 and tilts about the tilting shaft 22 as the pinion gear 24 rotates, thereby tilting the drive portion 50 including the housing 51. The kneading balls 20 tilting integrally with the backrest 13 are formed as a sufficient number of teeth that can provide a tilting range that can protrude beyond the back position of the user when leaning against the backrest 13. .

  The pinion gear 24 is a gear that is rotatably arranged around the rotation shaft 23 and meshes with the tooth portion 54 on the drive unit 50 side, and the advance / retreat motor 61 as the one drive source via the rotation shaft 23. It is rotationally driven by.

  The first base frame 25 is a metal member whose longitudinal direction is perpendicular to the tilting shaft 22 and the rotating shaft 23, and rotates one end of the tilting shaft 22 and one end of the rotating shaft 23, respectively. It is possible to support.

  The second base frame 26 is a metal member whose longitudinal direction is perpendicular to the tilting shaft and the rotation shaft, and the other end of the tilting shaft 22 and the other end of the rotation shaft 23 are respectively connected. It is supported in a rotatable manner.

  Specifically, each of the first and second base frames 25 and 26 is a molded body obtained by bending a plurality of outer peripheral portions of a metal flat plate having a predetermined shape as a standing state or the like by bending, and rotates with the tilt shaft 22. A plurality of plane portions parallel to or perpendicular to the shaft 23 are provided, and the plane portions intersect with each other at a plurality of corner portions continuous in a direction perpendicular to the tilting shaft 22 and the rotation shaft 23.

  The plurality of flat portions include a single flat portion having a predetermined size exceeding the inter-axis distance in the vertical direction of the back portion of the tilt shaft 22 and the rotation shaft 23 and parallel to the tilt shaft 22 and the rotation shaft 23. 25a, 26a and other flat portions 25b, 26b that are perpendicular to the tilting shaft 22 and the rotation shaft 23 are included, and one of the flat portions 25a, 26a is placed on the backrest along the vertical direction. .

  In each base frame 25, 26, one flat surface portion 25a, 26a and the other flat surface portion 25b, 26b are arranged so as to directly intersect at a predetermined corner, and the tilt shaft 22 of the one flat surface portion 25a, 26a. In addition, the size of the direction perpendicular to the direction in which the predetermined corners of the other plane portions 25b and 26b are perpendicular to each other is larger than the size of the direction parallel to the rotation axis 23. Is done.

  More specifically, one flat surface portion 25a, 26a in each base frame 25, 26 is formed as the remaining portion of the metal flat plate that has not been raised. The other flat portions 25b and 26b are formed as one of a plurality of standing portions. In addition, the plurality of standing portions including the other flat portions 25b and 26b are bent so that each of the standing portions and the one flat portion 25a and 26a have at least a groove-shaped cross-sectional shape portion. Become. And each standing part of each of the first and second base frames 25 and 26 is bent so that the corner part which is the bending position is perpendicular to the tilting shaft 22 and the rotating shaft 23, and the standing part is also formed. The tilt axis 22 and the rotation axis 23 are perpendicular to each other.

  Of the standing portions, the size of the other flat portions 25b and 26b that are located outside the base frames 25 and 26 and face the guide frame 13b as the side ends of the base frames 25 and 26 is the same as that of the tilting shaft 22. It is bent and formed so as to have a size equal to or larger than the size of the parallel flat portions 25a and 26a. Thereby, each base frame 25 and 26 becomes larger in the longitudinal direction of the backrest portion corresponding to the standing height of the standing portion than the size in the direction parallel to the tilting axis. The other flat portions 25b and 26b of the base frames 25 and 26 are further bent at their ends to form other flat portions 25c and 26c that are parallel to the one flat portion 25a and 26a. The speed reduction mechanism 56 or the bearing portion 55 is fixedly disposed on the other flat portions 25c and 26c.

  The first base frame 25 is provided with a speed reduction mechanism portion 57 that is connected to one end portion of the tilting shaft 22 and a bearing portion 55 that pivotally supports one end portion of the rotary shaft 23.

  Further, the lifting motor 62 as the other driving source is supported so that the output shaft of the motor overlaps the first base frame 25 with the direction perpendicular to the tilting shaft 22, and the output shaft serves as the speed reduction mechanism 57. And the tilting shaft 22 can be driven. The elevating motor 62 is attached to the first base frame 25 via the speed reduction mechanism 57 and generates a driving force for elevating the mechanical unit 10 based on the control of the control unit 40.

  The speed reduction mechanism 57 is shifted in a direction parallel to the tilting shaft 22 with respect to the worm wheel 57b coupled to the output shaft of the lifting motor 62, the worm wheel 57b meshing with the worm 57a, and the worm wheel 57b. One or a plurality of reduction step portions 57c that are disposed at positions and are interposed between the worm wheel 57b and the tilt shaft 22 are provided. The speed reduction mechanism 57 also serves as a bearing for the tilting shaft 22 and is positioned around the tilting shaft 22 and between the housing 51 of the drive unit 50 and the other flat surface portion 25b of the first base frame 25. The end of the tilting shaft 22 is pivotally supported while transmitting rotation from the decelerating step 57c to the tilting shaft 22.

  The lifting motor 62 is connected to the speed reduction mechanism 57 on the first base frame 25, and the worm 57a and worm wheel 57b of the speed reduction mechanism 57 from the motor output shaft oriented in a direction perpendicular to the tilting shaft 22, and further the speed reduction stage. By transmitting the driving force to the tilting shaft 22 through the part 57c, it is possible to increase the speed reduction ratio without increasing the size of the worm wheel 57b by multistage reduction, mainly depending on the size of the worm wheel 57b. The amount of protrusion of the speed reduction mechanism 57 in each direction perpendicular to the tilting shaft 22 can be suppressed, and the amount of protrusion in the machine unit 10 can be reduced. In addition, since a reduction gear step 57c is provided and a large reduction ratio can be set without causing an increase in the size of the worm wheel 57b, it is possible to reduce the size of a motor that generally tends to increase in size as the rated rotation speed decreases. it can. Further, the speed reduction step portion 57c is arranged so as to be shifted in a direction parallel to the tilt shaft 22 that does not easily affect the overall size of the mechanical unit 10 with respect to the worm wheel 57b, and the speed reduction mechanism portion 57 itself is also the first base. The size of the mechanical unit 10 is increased while ensuring a large reduction ratio as the speed reduction mechanism portion 57 by being provided in a form that can be efficiently accommodated around the tilting shaft 22 between the other flat portion 25b of the frame 25 and the drive portion 50. Therefore, the machine unit 10 as a whole can be made compact.

  The second base frame 26 is provided with a bearing 58 that supports the other end of the tilting shaft 22 and a speed reduction mechanism 56 that connects and supports the other end of the rotating shaft 23. The

  Further, the advancing / retreating motor 61 as the one drive source is supported so that the output shaft of the motor overlaps the second base frame 26 in a direction perpendicular to the rotation shaft 23, and the output shaft serves as a reduction mechanism 56. And the rotary shaft 23 can be driven. The advance / retreat motor 61 is attached to the second base frame 26 via the speed reduction mechanism portion 56 and generates a driving force for tilting the drive portion 50 based on the control of the control portion 40.

  The speed reduction mechanism portion 56 is displaced in a direction parallel to the rotation shaft 23 with respect to the worm wheel 56b coupled to the output shaft of the advance / retreat motor 61, a worm wheel 56b meshing with the worm 56a, and the worm wheel 56b. One or a plurality of reduction step portions 56c that are disposed at positions and are interposed between the worm wheel 56b and the rotating shaft 23 are provided. The speed reduction mechanism 56 also serves as a bearing for the rotary shaft 23 and is positioned around the end of the rotary shaft 23. The speed reduction mechanism 56 supports the end of the rotary shaft 23 while transmitting the rotation from the speed reduction step portion 56c to the rotary shaft 23. Yes.

  The advance / retreat motor 61 is connected to the speed reduction mechanism portion 56 on the second base frame 26, and the worm 56a and the worm wheel 56b of the speed reduction mechanism portion 56 from the motor output shaft oriented in a direction perpendicular to the rotation shaft 23, and further the speed reduction step portion. By transmitting the driving force to the rotating shaft 23 through 56c, it is possible to increase the speed reduction ratio without increasing the size of the worm wheel 56b by multistage reduction, and the rotation mainly depends on the size of the worm wheel 56b. The amount of protrusion of the speed reduction mechanism 56 in each direction perpendicular to the shaft 23 can be suppressed, and the protruding portion of the mechanical unit 10 can be reduced.

  Further, by providing a reduction step portion 56c and setting a large reduction ratio without causing an increase in the size of the worm wheel 56b, it is possible to reduce the size of a motor that generally tends to increase in size as the rated rotation speed decreases. In addition, the speed reduction step portion 56c is arranged so as to be shifted in a direction parallel to the rotary shaft 23 that does not easily affect the overall size of the mechanical unit 10 with respect to the worm wheel 56b, thereby providing a large reduction ratio as the speed reduction step portion 56c. As a result, it is not necessary to increase the size of the machine unit 10 while securing the size of the machine unit, and the entire machine unit can be made compact.

  For each of the first and second base frames 25, 26, the tilting shaft 22 is connected at one end to the speed reduction mechanism 57 of the first base frame 25 and at the other end to the second base frame. It is pivotally supported by a bearing portion 58 of the frame 26. The rotating shaft 23 is pivotally supported at one end thereof by the bearing portion 55 of the first base frame 25 and is connected to and supported by the speed reduction mechanism portion 56 of the second base frame 26. Is done. Thus, the tilting shaft 22 and the rotating shaft 23, and the first and second base frames 25 and 26 are connected in a frame shape.

  In this way, the base frame and each shaft are combined and integrated into a frame shape, and the base frame that supports each shaft is formed by bending a single metal plate, and rigidity is ensured by the raised portions generated by bending. By doing so, the structure can be simplified and the weight can be reduced.

  The tilting shaft 22 and the rotating shaft 23, the first and second base frames 25 and 26 are connected in a frame shape, and the tilting shaft 22 is connected to the first and second base frames 25 and 26 in the axial direction. The backrest part is supported so as to be rotatable in a direction orthogonal to the vertical direction of the backrest part, and the housing 51 of the drive part 50 is supported around the tilting shaft 22 so as to be relatively rotatable. The first and second base frames 25 and 26 are supported so as to be tiltable.

  The guide bodies 17 and 18 are disposed on one flat surface portion 25a and 26a in each of the first and second base frames 25 and 26 over the entire longitudinal direction of the one flat surface portion 25a and 26a. It is in a state of projecting by a predetermined height from the flat surface portions 25a, 26a toward the front side of the backrest portion 13, and covers an end portion of a member such as a screw projecting on the surface of the one flat surface portion 25a, 26a as a kind of cover. is there. Further, the guide bodies 17 and 18 have base surfaces that are rounded and curved at both ends in the longitudinal direction of one flat portion 25a and 26a and that are adjacent to both longitudinal ends of the one flat portion 25a and 26a. The curved surface portions 17a, 17b, 18a, and 18b are arranged in the vicinity of the end faces of 25 and 26.

  In this way, the guide bodies 17 and 18 arranged in a protruding state on one flat surface portion 25a and 26a of each base unit 25 and 26 are positioned on the most front side of the backrest portion 13 on each base frame 25 and 26. ing. As a result, when the machine unit 10 moves the backrest portion 13 in the vertical direction, the guide bodies 17 and 18 are not covered even if the back surface of the backrest portion 13 approaches the base frames 25 and 26. And the base frame 25, 26, the skin part can be prevented from contacting the base frame surface and the end of the member projecting on the surface, and the skin part can be protected, and the user's body can be protected via the skin part. Can be prevented from touching the base frames 25 and 26, and the user can be prevented from feeling uncomfortable due to contact with the base frame. In addition, the curved body portions 17a, 17b, 18a, and 18b at the ends of the guide bodies 17 and 18 are disposed in the vicinity of the end faces of the base frames 25 and 26, and the guide body that protrudes when the skin portion approaches the end face of the base frame. The curved shape portions 17a, 17b, 18a and 18b of the 17 and 18 can be in contact with the skin portion so that the skin portion cannot be brought close to the end surfaces of the base frames 25 and 26 and the edge portions thereof. Scratches on the back of the skin can be prevented. The curved surface portions 17a, 17b, 18a, and 18b themselves can be in smooth contact with the skin portion, and the skin portion is not caught, and the guide bodies 17 and 18 and the skin when the machine unit 10 is moved. The relative movement with the part can be made smooth.

  Further, as shown in FIGS. 3 and 6, the first and second base frames 25 and 26 have one plane of the base frames 25 and 26 at the longitudinal ends of the base frames 25 and 26, respectively. End covers 25d and 26d connected to a plurality of upright portions including the portions 25a and 26a and other flat portions 25b and 26b may be provided. By providing these end covers 25d and 26d, it is easy to maintain the groove-like cross-sectional shape of each base frame 25 and 26, and the strength of the base frames 25 and 26 against external force can be increased. As long as these end covers 25d and 26d can maintain the groove-like cross-sectional shape of each base frame 25 and 26, one plane portion 25a and 26a of each base frame 25 and 26 and another plane portion 25b, Any connection, such as fitting into a groove of a groove-like portion comprising a plurality of upstanding portions including 26b, or welding to the ends of the base frames 25 and 26 when the end cover is a metal plate. A method may be used. The arrangement positions of the end covers 25d and 26d are not limited to the upper end portions of the base frames 25 and 26 as shown in the drawings, and may be provided at the lower end portions.

  The roller portion 27 is disposed on the outer portion of each of the first and second base frames 25 and 26 so as to be rotatable about a central axis parallel to the tilting shaft 22, and is rotationally driven by an elevating motor 62. Thus, the guide frame 13b travels up and down to move the machine unit 10 relative to the guide frame 13b.

  The roller portion 27 is tilted through the other plane portions 25b and 26b at a predetermined position near the one plane portions 25a and 26a in the other plane portions 25b and 26b located at the side ends of the base frames 25 and 26. Attached to both ends of the shaft 22 and arranged so as to be rotatable integrally with the tilting shaft 22 also serving as the central axis, the lifting motor 62 on the second base frame 26 tilts via the speed reduction mechanism 57. This is a mechanism that rotates as the shaft 22 is driven to rotate.

  The roller portion 27 is formed with a gear portion 27a formed in a gear shape at the end of each base frame 25, 26 near the other flat portions 25b, 26b, and the remaining other portion as a cylindrical guide surface portion 27b. It is a configuration.

  In addition to the roller portion 27, guide rollers 28 are rotatably attached to other predetermined locations on the other flat portions 25b and 26b of the base frames 25 and 26, respectively.

  In addition to the roller portion 27, guide rollers 28 are rotatably attached to other predetermined portions of the other flat portions 25b and 26b of the base frames 25 and 26, respectively. The guide roller 28 has a gear portion and a guide surface portion similar to the roller portion 27, but is disposed on each base frame 25, 26 so as to be independently rotatable, and each base frame 25, 26. The amount of protrusion from the other flat portions 25b and 26b is slightly larger than the roller portion 27 (see FIG. 4).

  The roller part 27 and the guide roller 28 positioned on both sides of the machine unit 10 are inserted into a pair of guide frames 13b in the backrest part 13, and the gear part 27a of the roller part 27 is connected to the rack 13c of the guide frame 13b. The machine unit including the tilting shaft 22 and each of the base frames 25 and 26 is configured to be able to travel by rolling and contacting the guide surface portion 27b to the surface of the guide frame 13b facing the surface of the rack 13c. 10 is supported between the guide frames 13b, and the machine unit 10 can move in the vertical direction of the backrest and is restrained from moving in the other direction.

  The roller unit 27 is rotated in accordance with the driving by the lifting and lowering motor 62, thereby changing the meshing position with the rack 13c and running the guide frame 13b. At the same time, the entire machine unit 10 is rested along the guide frame 13b. The position of the kneading balls 20 in the backrest 13 (the massage target portion by the kneading balls) can be changed up and down by moving the portion 13 up and down.

Depending on the shape and arrangement accuracy of the guide frame 13b, the lateral direction of the machine unit 10 and the pair of guide frames 13 (parallel to the tilting shaft 22 and the rotation shaft 23) is within a range in which the back of the machine unit 10 can be moved in the vertical direction. The positional relationship in the orientation) is not constant, and when the machine unit 10 moves up and down, the roller portion 27 and the guide roller 28 of the machine unit 10 move relative to the guide frame 13b with lateral movement. It becomes a state to do. Even in such a case, the amount of protrusion from the other flat portions 25b and 26b of the guide roller 28 on the driven side is made larger than that of the roller portion 27 on the driving side in advance, so that the roller portion with respect to the guide frame 13b. When the guide roller 28 and the guide roller 28 are excessively close to each other, the inner surface of the guide frame 13b perpendicular to the tilting shaft 22 and the rotation shaft 23 and the lateral end surface of the guide roller 28 are exclusively in contact with each other. 27 is less likely to come into contact with the lateral end surface, and the lateral end surface of the roller portion 27 that rotates by receiving a driving force comes into contact with the guide frame 13b to generate frictional resistance, thereby avoiding a situation in which the driving load increases. be able to.
In addition, since the driven side is likely to be laterally shaken starting from the drive side, stable travel can be performed by restricting the lateral direction only on the driven side.

  Furthermore, the accuracy of the lateral arrangement relationship between the guide frame 13b and the machine unit 10 is borne by the guide rollers 28 that may be in contact with the end faces, and the guide rollers 28 that are individually attached to the base frames 25 and 26. Therefore, it is relatively easy to ensure accuracy. And the precision of the arrangement relationship of the roller part 27 does not need to be set high. In the case of the roller portion 27 in the present embodiment, in order to obtain a predetermined accuracy with respect to the arrangement relationship of the roller portion 27, not only the roller portion 27 but also a mechanism related to the support of the roller portion 27 including the tilting shaft 22 and its support mechanism. The pursuit of accuracy over the whole is indispensable, but since the conditions for such accuracy can be relaxed, the manufacturing process can be simplified correspondingly, and the cost for manufacturing the mechanical unit can be reduced.

  The armrests 14 are disposed on both sides of the seat 12 and are formed to stably support the user's forearm even when the backrest 13 changes the reclining angle or the seat 12 tilts. It is a configuration. The armrest 14 may also be provided with an air cell that operates by supplying and discharging air by the air pump 70 so that the user's forearm can be massaged.

  The leg support portion 15 is positioned on the front side of the seat portion 12 and is disposed so as to be tiltable about the vicinity of the front end of the seat portion 12, and the tilt angle is adjusted by a built-in actuator (not shown). The leg support 15 may be provided with treatment means such as a leg air cell that operates by supplying and discharging air by the air pump 70 and a roller that presses the leg while moving up and down.

  The operation unit 30 includes a number of switches and display units for receiving various operation inputs to the massage machine, is detachably installed on the stand 31 on the side of the massage machine 1, and transmits operation inputs related to massage to the control unit 40. To do. Note that the position of the stand 31 can be adjusted so that the position of the switch and the display unit of the operation unit 30 is the optimum position for the user.

  The control unit 40 adjusts the other movable parts of the treatment means and the massage machine to a state corresponding to the user based on the detection result obtained by executing the position detection of each part of the user's body in advance. The treatment means and other movable parts are controlled to perform appropriate treatment based on the operation of the operation unit 30, treatment contents recorded and set in advance, and information on the detection result.

  The control unit 40 is a computer including a CPU, a memory, an input / output interface, and the like as its hardware configuration, and is a mechanism that causes the computer to operate as the control unit 40 by a program stored in the memory or the like. The computer constituting the control unit 40 may be a microcomputer in which a CPU, a memory, a ROM, and the like are integrally formed.

  The computer unit constituting the control unit 40 has a main part disposed in a predetermined space inside the massage machine 1 such as immediately below the seat 12 and a part related to control of various motors of the machine unit 10 is used for the unit. The control circuit unit 41 is arranged on the machine unit 10. The control unit 40 is in a state where it can communicate with the operation unit 30, and various motors of the mechanical unit 10, each of the seat unit 12, the backrest unit 13, each actuator for tilting the leg support unit 15, and the air pump 70. Control signal output based on a preset position detection program when detecting the position of each part of the user's body that is electrically connected, and based on the set massage data when performing massage The operation of these drive mechanisms is controlled by the output.

  In addition, the control unit 40 is also electrically connected to signal output means such as an encoder that outputs the displacement amount of the machine unit 10 and each actuator, and the state of the machine unit 10, the seat 12, the backrest 13, In addition, the operation control of the driving means such as the motor and the actuator is performed while grasping the state of the leg support 15 such as the inclination.

  In addition, the control unit 40 controls the machine unit 10 to detect the position of each part of the user's body prior to the massage, as in a known massage machine, and moves the machine unit 10 from the initial position in the backrest part 13 to the guide frame 13b. In the process of moving the kneading balls 20 along the user, a change in pressure on the kneading balls 20 from the user leaning against the backrest 13 and a change in the inclination of the kneading balls 20 are sequentially acquired. Based on the information, the user's shoulder position, spine line, and waist position can also be detected.

  Next, the operating state of the mechanical unit of the massage machine according to the present embodiment will be described. As a premise, the massage machine 1 is turned on with the user sitting on the massage machine 1 and the back is leaned against the backrest 13, the massage machine 1 is activated, and the body shape of the user is detected. The preparatory operation before starting the massage and the adjustment of the inclination angle of the backrest 13 and the like are completed, and the operation state instruction such as the massage course is inputted by the user, and the control unit 40 massages with the massage balls for the user Or you are about to perform a massage.

  In the case of massage with the kneading balls 20, the control unit 40 operates the elevating motor 62 to rotate each roller unit 27 according to the set massage content, and the entire machine unit 10 is moved up and down with respect to the guide frame 13b. It is moved and the vertical position of the kneading balls 20 is adjusted.

  In addition, the control unit 40 operates and rotates the advance / retreat motor 61 so that the kneading balls 20 are moved forward and backward by a predetermined amount or an amount adjusted according to an input instruction by the user. The shaft 23 is rotated together with the pinion gear 24, and the drive unit 50 is tilted with respect to the other part of the mechanical unit 10 based on the engagement of the pinion gear 24 and the tooth portion 54. By the tilting of the drive unit 50, the integral kneading balls 20 are moved forward and backward with respect to the user, the amount of the kneading balls 20 protruding to the user side is adjusted, and the kneading balls 20 are positioned at the massage target location.

  Thereafter, or in parallel with the movement of the kneading balls 20, the control unit 40 activates the kneading motor 63 and / or the tapping motor 64 according to the type of massage, The kneading balls 20 are caused to move corresponding to the massage.

  When the kneading balls 20 protruding toward the user come into contact with the user, the reaction force received by the kneading balls 20 from the user is transmitted to the housing 51 of the drive unit 50 via the kneading ball support arm 21 and the internal mechanism. With respect to this force, the housing 51 is supported by the tilting shaft 22 and is also supported by the rotating shaft 23 by the engagement of the tooth portion 54 outside the housing 51 and the pinion gear 24, thereby maintaining the set position. The reaction force received by the kneading balls 20 acts on the housing 51 as a stress in a direction perpendicular to the tilting shaft 22 and the rotation shaft 23 and tries to deform the housing 51 itself. , 53, and the outer shell members 52, 53 are connected and integrated in a direction parallel to the tilting shaft 22 and the rotation shaft 23, and are closest to the first base frame 25. In which the end facing the base frame 25 and the end facing the base frame 26 of the outer shell member 53 closest to the second base frame 26 are perpendicular to the tilting shaft 22 and the rotation shaft 23, respectively. The side surface portions 52a and 53a are formed so as to be difficult to be deformed in a direction perpendicular to the tilting shaft 22 and the rotation shaft 23.

  As a result, even if the reaction force from the kneading ball 20 side is applied to the housing 51 as a stress in a direction perpendicular to the tilting shaft 22 and the rotation shaft 23 and the housing 51 itself is to be deformed, it is parallel to the direction of such force. The side surface portions 52a and 53a of the outer shell members 52 and 53 that are continuous with each other maintain the shape of the outer shell members 52 and 53, and deformation of the other portions of the outer shell member can be suppressed. In addition, the connecting surfaces of the outer shell members 52 and 53 are parallel to the direction of the force so that the outer shell members 52 and 53 are excessively brought close to each other or separated from each other. As a result, it is possible to reliably prevent the outer shell members 52 and 53 connected to the housing 51 from being deformed and damaged.

  Further, the tooth portion 54 is disposed in the vicinity of the side surface portions 52a and 53a in the housing 51, and the tooth portion 54 to which the force is applied is supported by being integrated with the side surface portions 52a and 53a. Even when the tooth portion 54 is applied with a force in a direction perpendicular to the rotary shaft 23 from the pinion gear 24 side in an attempt to tilt the drive portion 50 by the reaction force from the housing side surface portion 52a in the vicinity of the tooth portion 54. The position of the tooth portion 54 on the housing 51 does not change with the difficulty of deforming 53a, and it is possible to prevent the housing 51 from being deformed and damaged based on the force applied to the tooth portion 54. At the same time, the positional relationship between the tooth portion 54 and the pinion gear 24 is also maintained, and transmission of the driving force by the pinion gear 24 and the tooth portion 54 can be appropriately executed.

  Further, in a situation where the kneading balls 20 protruding toward the user are in contact with the user, the pinion gear 24 meshes with the tooth portion 54 and applies a pressing force thereto, while the kneading balls 20 are counteracted by the user. With the force, the pinion gear 24 is simultaneously receiving a large reaction force from the tooth portion 54 side. As a result, the rotating shaft 23 to which the force is transmitted from the pinion gear 24 is relatively subjected to a force to change the position with respect to the tilting shaft 22 that is the center of tilting of the drive unit 50 and the toothed portion 54, that is, the tilting shaft. A force for changing the mutual positional relationship between the rotary shaft 22 and the rotary shaft 23 is applied to the base frames 25 and 26.

  The force applied to each of the base frames 25 and 26 is a force in a direction perpendicular to the tilting shaft 22 and the rotation shaft 23 and acts as a bending stress on each of the base frames 25 and 26. A structure that is not easily deformed by a force in such an orientation, specifically, an orientation that is perpendicular to one plane portion 25a, 26a parallel to each axis in an arrangement extending between the tilting shaft 22 and the rotating shaft 23. Are provided with a plurality of standing portions, and in particular, the other flat portions 25b and 26b arranged between the tilting shaft 22 and the rotating shaft 23 are made larger than the one flat portions 25a and 26a. Thus, deformation of the base frames 25 and 26 can be prevented, and the positional relationship between the tilting shaft 22 and the rotating shaft 23 on the base frames 25 and 26 can be maintained.

  For this reason, for example, there is no change in which the coupling and interlocking of the components become insufficient, such as the meshing state of the tooth portion 54 on the drive unit 50 and the pinion gear 24 on the rotating shaft 23 becomes shallow, and the kneading balls Even when 20 is in contact with the user and receives a large force, abnormal force is not concentrated on each part of the machine unit 10, and damage to the part can be prevented, affecting the user. You can also prevent it.

  And since it is hard to produce the change of an unnecessary positional relationship in each part of the machine unit 10, each mechanism can be moved with high precision by the control part 40, the appropriate massage to a user can be performed stably continuously, The massage can be finished with accurate timing.

  As described above, the mechanical unit of the massage machine according to the present embodiment is configured so that the tilting shaft 22 supporting the driving unit 50 and the both end portions of the rotating shaft 23 related to the tilting of the driving unit 50 are independent of the driving unit 50. Two base frames 25 and 26 are supported, and each base frame 25 and 26 has a direction that is perpendicular to the tilting shaft 22 and the rotation shaft 23 and that corresponds to the front and rear direction of the backrest portion 13. Since the size of the base frame 25 and 26 is larger than the direction parallel to the tilting shaft 22 and the rotation shaft 23, the base frames 25 and 26 are not easily deformed by the force applied in the direction perpendicular to the tilting shaft 22 or the rotation shaft 23. A large reaction force is applied to the kneading balls 20 to relatively move the driving unit 50, and the force to change the positional relationship between the tilting shaft 22 and the rotating shaft 23 from the driving unit 50 side is the base force. Even in the case of being added to the frames 25 and 26, the base frames 25 and 26 are not deformed, and the positional relationship between the tilting shaft 22 and the rotating shaft 23 on the base frame is maintained, and the mechanical parts are connected and interlocked in an appropriate state. Therefore, it is possible to prevent the parts from being damaged without applying abnormal force to each part, and to reliably tilt the drive unit 50 related to the adjustment of the position of the treatment element. Stability can be improved.

  In the massage machine according to the embodiment, each of the first and second base frames 25 and 26 has a groove-like cross-sectional shape by bending a metal flat plate to generate an upright portion. The other flat portions 25b and 26b, which are standing portions, are formed so that the size of the other flat portions 25b and 26b is larger than that of the one flat portion 25a and 26a. A member having a predetermined cross-sectional shape having at least can be used for the base frame as it is. In that case, in addition to a metal material such as a shape steel or an extrusion mold material, a molded product of a synthetic resin material can be used as long as it has a required strength.

DESCRIPTION OF SYMBOLS 1 Massage machine 10 Machine unit 11 Base part 12 Seat part 13 Back part 13a Back part frame 13b Guide frame 13c Rack 14 Armrest part 15 Leg support part 17, 18 Guide body 17a, 17b Curved shape part 18a, 18b Curved shape part 20 Kneading ball 21 Kneading ball support arm 22 Tilt shaft 23 Rotating shaft 24 Pinion gear 25 First base frame 25a One plane portion 25b Other plane portion 25c Plane portion 25d End cover 26 Second base frame 26a One plane portion 26b Other Plane part 26c Plane part 26d End cover 27 Roller part 27a Gear part 27b Guide surface part 28 Guide roller 30 Operation part 31 Stand 40 Control part 41 Unit control circuit part 50 Drive part 51 Housing 52, 53 Outer shell member 52a, 53a Side face Part 4 Tooth part 55 Bearing part 56 Deceleration mechanism part 56a Worm 56b Worm wheel 56c Deceleration stage part 57 Deceleration mechanism part 57a Worm 57b Worm wheel 57c Deceleration stage part 58 Bearing part 61 Advance / retreat motor 62 Lifting motor 63 Stitching motor 64 For tapping Motor 70 Air pump 71 Buttocks air cell 72 Thigh air cell 73 Back air cell 74 Lumbar air cell

Claims (7)

In a mechanical unit of a massage machine, which is disposed in the backrest part in a chair-type massage machine having at least a seat part and a backrest part, and performs a predetermined massage by moving a treatment element for a user,
A drive unit for operating the treatment element;
A tilting shaft that is disposed in a direction perpendicular to the vertical direction and the front-rear direction of the backrest part and supports the drive unit so as to be tiltable;
A plurality of teeth formed side by side as the same tooth profile as an external gear having a predetermined pitch circle diameter whose center coincides with the tilt axis, and a tooth portion fixedly disposed outside the drive portion;
A predetermined rotation axis disposed in the vicinity of the tooth portion as a direction parallel to the tilt axis;
A pinion gear that is rotatably arranged around the rotation shaft, meshes with the tooth portion, and is rotationally driven by a predetermined drive source through the rotation shaft;
A first base frame that is a member whose longitudinal direction is perpendicular to the tilting axis and the rotation axis, and rotatably supports one end portion of the tilting shaft and one end portion of the rotation shaft;
A second base frame that is a member having a longitudinal direction perpendicular to the tilting shaft and the rotation shaft, and that rotatably supports the other end portion of the tilting shaft and the other end portion of the rotation shaft. Prepared,
Each of the first and second base frames has a plurality of flat portions that are parallel or perpendicular to the tilting axis and the rotation axis, and a plurality of corners that are continuous in a direction perpendicular to the tilting axis and the rotation axis. It is a member having a shape where the flat portions intersect each other,
The plurality of plane portions have a predetermined size exceeding the inter-axis distance in the vertical direction of the backrest portion between the tilt axis and the rotation axis, and the one plane portion parallel to the tilt axis and the rotation axis, and tilting An axis and at least another plane portion perpendicular to the rotation axis, the one plane portion being placed along the back and up and down direction,
The one plane part and the other plane part are arranged so as to directly intersect each other at a predetermined corner, and the other plane part has a size that is parallel to the tilt axis and the rotation axis of the other plane part. A mechanical unit of a massage machine, wherein the size of a direction perpendicular to the continuous direction of the predetermined corners in the flat part is increased. In the mechanical unit of the massage machine according to claim 1,
The drive unit has a substantially box-shaped housing surrounding an internal mechanism portion for operating the treatment element from the outside,
The housing is formed by integrally combining a plurality of outer shell members in a direction parallel to the tilt axis and the rotation axis,
Out of the outer shell members forming the housing, the member closest to the first base frame has a continuous side surface in a direction perpendicular to the tilting axis and the rotation axis at the end facing the first base frame. Formed as
Out of the outer shell members forming the housing, the member closest to the second base frame has a continuous side surface portion with the end facing the second base frame oriented in a direction perpendicular to the tilting axis and the rotation axis. It is formed as a mechanical unit of a massage machine. In the mechanical unit of the massage machine according to claim 2,
The tooth portion is fixedly disposed on one or both of a portion near one side portion facing the first base frame and a portion near the other side portion facing the second base frame in the housing. The machine unit of the massage machine. In the mechanical unit of the massage machine according to any one of claims 1 to 3,
Each of the first and second base frames is a molded body obtained by bending a plurality of outer peripheral portions of a predetermined-shaped metal flat plate in a standing state,
The one flat portion of each base frame is formed as a remaining portion that has not been raised in the metal flat plate,
The other plane portion in each base frame is formed as one of a plurality of standing portions, and a plurality of standing portions including the other plane portions are each of the standing portions and the one plane portion. A machine unit of a massage machine, characterized in that is bent so as to have at least a groove-shaped cross-sectional shape. In the mechanical unit of the massage machine according to any one of claims 1 to 4,
The rotating shaft is pivotally supported by a bearing portion disposed on one of the first and second base frames, and is coupled and supported by a speed reduction mechanism portion disposed on the other of the base frames. ,
The one drive source is a motor, the output shaft of the motor is connected to the speed reduction mechanism, and the rotation shaft can be driven.
The one motor is supported so as to overlap the other of the base frame with the output shaft oriented at a right angle to the rotation shaft,
The speed reduction mechanism is disposed at a position shifted in a direction parallel to the rotation axis with respect to the worm wheel, a worm wheel meshing with the worm, connected to the output shaft of the motor, and a worm wheel; One or a plurality of deceleration steps interposed between the rotating shaft, and
The speed reduction mechanism portion is also located around the rotation shaft end portion serving as a bearing for the rotation shaft, and supports the rotation shaft end portion while transmitting the rotation from the deceleration step portion to the rotation shaft. Machine unit of the machine. In the mechanical unit of the massage machine according to any one of claims 1 to 5,
A roller portion is provided on each outer portion of each of the first and second base frames so as to be rotatable around a central axis parallel to the tilting axis, and is rotated by a predetermined other driving source. ,
The drive unit is attached to and supported by the tilt shaft so as to be relatively rotatable,
The tilting shaft is coupled to a speed reduction mechanism disposed on one of the first and second base frames, and is pivotally supported on a bearing disposed on the other of the base frames. The roller portions are respectively attached to both end portions penetrating each of the first and second base frames, and can be driven by the other drive source attached to the first or second base frame. Also serves as the central axis of the roller
The other drive source is another motor, the output shaft of the motor is connected to the speed reduction mechanism unit, and the tilt shaft can be driven.
The other motor is supported so as to overlap one of the base frames with the output shaft oriented in a direction perpendicular to the tilting shaft;
The speed reduction mechanism is disposed at a position shifted in a direction parallel to the tilting shaft with respect to the worm wheel, a worm wheel meshing with the worm, connected to the output shaft of the motor, and a worm wheel; One or a plurality of deceleration steps interposed between the tilt axis, and
The speed reduction mechanism portion also serves as a bearing for the tilting shaft and is positioned around the tilting shaft and between the housing of the driving unit and the other flat portion of one of the base frames, and rotates from the speed reduction step portion to the tilting shaft. While supporting the tilting shaft end,
The roller part makes contact with each guide frame so that it can run up and down with respect to a pair of guide frames respectively arranged on the left and right inside the back part of the massage machine, and at least the tilting shaft and the drive part are between the guide frames. A mechanical unit of a massage machine, characterized in that it is supported so as to be movable in the vertical direction of the backrest part in a sandwiched arrangement. In the mechanical unit of the massage machine according to any one of claims 1 to 6,
The first and second base frames are disposed on the one plane portion over the entire length of the one plane portion, and project from the one plane portion to the front side of the backrest by a predetermined height. Equipped with a guide body,
Both ends in the longitudinal direction of the one plane portion in the guide body are rounded curved shapes, and the curved shape portions are disposed in the vicinity of the end face of the base frame adjacent to both ends in the longitudinal direction of the one plane portion. A mechanical unit of a massage machine characterized by being arranged to be positioned.

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