JP7218417B2 - Massage machine - Google Patents

Description

TECHNICAL FIELD The present invention relates to a mechanical unit of a massage machine that moves treatment elements such as kneading balls to perform a massage for a user, and more particularly to a machine that can adjust the position of the treatment elements with respect to the user.

In a chair-type massage machine that performs massage while supporting the user's body, kneading balls as treatment elements provided on the backrest of the machine are usually moved back and forth (by the user side) to the user who is leaning on the backrest. It has a configuration in which the amount of protrusion to the side can be adjusted, and the intensity of treatment desired by the user can be obtained. In such a massage machine, as a mechanism for adjusting the advance and retreat of the kneading balls, a drive unit that operates the kneading balls during massage is tiltably supported, and the drive unit is provided with rack-shaped teeth. By arranging a small gear (pinion gear) that meshes with, rotating this small gear on a predetermined rotation axis and moving the meshing tooth part, the driving part is tilted together with the massaging balls, and the massaging balls are placed on the backrest part Mechanisms that allow forward and backward advance and retreat were often used. An example of a massage machine that employs such a movement mechanism for kneading balls is disclosed in Japanese Patent Application Laid-Open No. 2007-6975.

Japanese Patent Application Laid-Open No. 2007-6975

As shown in the above-mentioned patent document, the conventional massage machine has a drive section that can be tilted in order to allow the user to adjust the movement of the kneading balls as treatment elements forward and backward. It had a configuration in which the meshed small gear was rotatable on the rotating shaft. In addition, in order to adjust the position of the kneading balls in the vertical direction of the backrest according to the user's physique, the driving part was configured as part of a mechanical unit that moves up and down in the backrest. Specifically, the drive unit is attached to a flat plate-like base portion that is arranged so as to be able to move up and down within the backrest portion, so that it can move up and down together with the kneading balls. In this case, in order to dispose the drive part so as to be able to tilt, the central axis of tilting of the drive part is supported by the base part, and a rotating shaft provided with a small gear for moving the drive part is supported by the base part. was

In the mechanical unit of such a conventional massage machine, since the driving part is supported by the flat plate-shaped base, it is difficult to obtain rigidity. However, it is difficult to give high rigidity to the base part, which is a part of it, which leads to an increase in weight. I was afraid. In detail, the force received by the kneading balls is transmitted from the driving part to the base part through the tilting center axis and the rotation axis. will be subject to the power to change For this reason, if a stronger than expected force is applied from the kneading ball side, the base part will be deformed, and the positional relationship of each part on the base part will not be maintained. Insufficient connection between mechanical parts, such as shallow meshing between the teeth on the drive unit and the small gear on the rotating shaft side, may result in failure to properly transmit force between parts, leading to damage to the parts. There was a problem that there is

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems. To provide a mechanical unit of a massage machine capable of maintaining the connection of mechanical parts to prevent breakage, and enhancing the reliability and stability of operation related to massage.

A mechanical unit of a massage machine according to the present disclosure is a mechanical unit that is disposed in a backrest portion and performs a predetermined massage by moving treatment elements with respect to a user,
a first shaft arranged in a direction perpendicular to the up-down direction and the front-rear direction of the backrest;
a second axis oriented parallel to the first axis;
A first base frame, which is a member whose longitudinal direction is perpendicular to the first and second shafts and which rotatably supports one end of the first shaft and one end of the second shaft, respectively. and,
A member whose longitudinal direction is perpendicular to the first and second shafts, and which rotatably supports the other end of the first shaft and the other end of the second shaft, respectively. base frame and
a first roller portion that is rotatably attached to the first plane portion of the first base frame about a central axis parallel to the first axis and driven to rotate by a drive source; a first guide roller driven by the roller portion;
a second roller portion that is rotatably attached to the second flat portion of the second base frame about a central axis parallel to the first axis and driven to rotate by the drive source; A second guide roller driven by the roller part of
with
The first roller portion and the first guide roller are in contact with a first guide frame of a pair of guide frames respectively arranged on the left and right sides inside the backrest portion so as to be able to travel up and down, and the second The roller portion and the second guide roller are in contact with the second guide frame of the pair of guide frames so as to be able to move vertically,
The amount of protrusion of the first guide roller from the first plane portion is greater than the amount of protrusion of the first roller portion from the first plane portion, and the second guide roller The amount of protrusion from the plane portion is larger than the amount of protrusion of the second roller portion from the second plane portion.

In addition, the mechanical unit of the massage machine according to the disclosure of the present invention is a mechanical unit that is disposed in the backrest portion and performs a predetermined massage by moving treatment elements with respect to the user,
a first shaft arranged in a direction perpendicular to the up-down direction and the front-rear direction of the backrest;
a second axis oriented parallel to the first axis;
a first base frame that rotatably supports one end of the first shaft and one end of the second shaft;
a second base frame that rotatably supports the other end of the first shaft and the other end of the second shaft;
a first roller portion that is rotationally driven by a drive source and attached to one end of the first shaft; a second roller portion that is attached to the other end of the first shaft;
A first guide roller attached to one end side of the second shaft and driven by the first roller portion, and a second guide roller attached to the other end side of the second shaft and driven by the second roller portion guide rollers of
with
The first roller portion and the first guide roller are in contact with a first guide frame of a pair of guide frames respectively arranged on the left and right sides inside the backrest portion so as to be able to travel up and down, and the second The roller portion and the second guide roller are in contact with the second guide frame of the pair of guide frames so as to be able to move vertically,
the first base frame has a first planar portion perpendicular to the first axis, the second base frame has a second planar portion perpendicular to the first axis, The amount of protrusion of the first guide roller from the first plane portion is greater than the amount of protrusion of the first roller portion from the first plane portion, and the second guide roller The amount of protrusion from the plane portion is larger than the amount of protrusion of the second roller portion from the second plane portion.

In addition, the mechanical unit of the massage machine according to the disclosure of the present invention is a mechanical unit that is disposed in the backrest portion and performs a predetermined massage by moving treatment elements with respect to the user,
a first shaft arranged in a direction perpendicular to the up-down direction and the front-rear direction of the backrest;
a second axis oriented parallel to the first axis;
a first base frame that rotatably supports one end of the first shaft and one end of the second shaft;
a second base frame that rotatably supports the other end of the first shaft and the other end of the second shaft;
A first roller portion that is rotatably attached to the first base frame about a central axis parallel to the first axis and driven to rotate by a drive source; and a second roller portion that follows the first roller portion. one guide roller;
A second roller portion that is rotatably attached to the second base frame about a central axis parallel to the first axis and driven to rotate by the drive source, and driven by the second roller portion. a second guide roller;
with
The first roller portion and the first guide roller are in contact with a first guide frame of a pair of guide frames respectively arranged on the left and right sides inside the backrest portion so as to be able to travel up and down, and the second The roller portion and the second guide roller are in contact with the second guide frame of the pair of guide frames so as to be able to move vertically,
The distance between the inner surface of the first guide frame perpendicular to the first axis and the lateral end surface of the first guide roller is the width of the inner surface of the first guide frame and the first roller portion. smaller than the distance to the direction end face,
The distance between the inner surface of the second guide frame perpendicular to the first axis and the lateral end surface of the second guide roller is the width of the inner surface of the second guide frame and the second roller portion. Less than the distance to the direction end face.

In addition, the mechanical unit of the massage machine according to the disclosure of the present invention is a mechanical unit that is disposed in the backrest portion and performs a predetermined massage by moving treatment elements with respect to the user,
a first shaft arranged in a direction perpendicular to the up-down direction and the front-rear direction of the backrest;
a second axis oriented parallel to the first axis;
a first base frame that rotatably supports one end of the first shaft and one end of the second shaft;
a second base frame that rotatably supports the other end of the first shaft and the other end of the second shaft;
a first roller portion that is rotationally driven by a drive source and attached to one end of the first shaft; a second roller portion that is attached to the other end of the first shaft;
A first guide roller attached to one end side of the second shaft and driven by the first roller portion, and a second guide roller attached to the other end side of the second shaft and driven by the second roller portion guide rollers of
with
The first roller portion and the first guide roller are in contact with a first guide frame of a pair of guide frames respectively arranged on the left and right sides inside the backrest portion so as to be able to travel up and down, and the second The roller portion and the second guide roller are in contact with the second guide frame of the pair of guide frames so as to be able to move vertically,
The distance between the inner surface of the first guide frame perpendicular to the first axis and the lateral end surface of the first guide roller is the width of the inner surface of the first guide frame and the first roller portion. smaller than the distance to the direction end face,
The distance between the inner surface of the second guide frame perpendicular to the first axis and the lateral end surface of the second guide roller is the width of the inner surface of the second guide frame and the second roller portion. Less than the distance to the direction end face.

Further, the mechanical unit of the massage machine according to the disclosure of the present invention is provided with the pair of guide frames respectively disposed on the left and right sides of the backrest portion as necessary,
The first and second roller portions and the first and second guide rollers are inserted into the pair of guide frames,
The gear portion of the first roller portion meshes with the rack of the first guide frame, the cylindrical guide surface portion of the first roller portion is in rolling contact with the first guide frame,
The gear portion of the second roller portion meshes with the rack of the second guide frame, and the cylindrical guide surface portion of the second roller portion is in rolling contact with the second guide frame.

In addition, according to the mechanical unit of the massage machine disclosed in the present invention, if necessary, the gear portion of the first guide roller is meshed with the rack of the first guide frame, and the cylinder of the first guide roller is The planar guide surface portion is in rolling contact with the first guide frame,
The gear portion of the second guide roller meshes with the rack of the second guide frame, and the cylindrical guide surface portion of the second guide roller is in rolling contact with the second guide frame.

In addition, according to the mechanical unit of the massage machine disclosed in the present invention, according to need, the alignment accuracy of the guide part is lower than the alignment accuracy of the guide roller.

1 is a perspective view of a massage machine to which a mechanical unit according to one embodiment of the invention is applied; FIG. 1 is a block diagram of a massage machine to which a mechanical unit according to one embodiment of the invention is applied; FIG. 1 is a front perspective view of a mechanical unit according to one embodiment of the present invention; FIG. 1 is a front view of a mechanical unit according to an embodiment of the invention; FIG. 1 is a left side view of a mechanical unit according to one embodiment of the invention; FIG. 1 is a plan view of a mechanical unit according to an embodiment of the invention; FIG. FIG. 4 is a bottom view of a mechanical unit according to one embodiment of the invention; 1 is a rear perspective view of a mechanical unit according to one embodiment of the present invention; FIG. FIG. 2 is a partially omitted rear view of a mechanical unit according to one embodiment of the present invention; FIG. 4 is an explanatory diagram of the positional relationship between the side end portion of the mechanical unit and the guide frame according to one embodiment of the present invention; FIG. 4 is an explanatory diagram of the state of force applied to the rotating shaft in a situation where external force is applied to the kneading balls of the mechanical unit according to one embodiment of the present invention.

Hereinafter, a mechanical unit of a massage machine according to one embodiment of the present invention will be described with reference to FIGS. 1 to 11. FIG.
In the above drawings, the mechanical unit 10 according to the present embodiment is arranged inside the backrest portion 13 of the chair-shaped massage machine 1 that supports a seated user, and moves the kneading balls 20 as the treatment elements to perform massage. It is executable.

The massage machine 1 having the mechanical unit 10 according to this embodiment includes a base portion 11 that is placed on the floor and supports the entire chair stably, and a user's buttocks above the base portion 11. a seat portion 12 that supports the user, a backrest portion 13 that supports the user's back on the rear side of the seat portion 12, an armrest portion 14 that supports the user's elbows and forearms on both the left and right sides of the seat portion 12, and the seat portion 12 A leg support part 15 that supports the user's legs on the front side of the machine, an operation part 30 that receives various operation inputs from the user, and a plurality of treatment means mounted including the mechanical unit 10. Operation related to massage can be operated by operation A control unit 40 that performs control based on contents such as input and recorded information is provided.

The base portion 11 is integrally attached with the seat portion 12, the backrest portion 13, the armrest portion 14, and the leg support portion 15 forming the various parts of the chair to support them. The seat portion 12 is attached to the base portion 11 so that the angle of inclination of the seat surface can be adjusted, and the seat surface supports the buttocks and thighs of the user while performing massage with the built-in treatment means. It is. The treatment means of the seat portion 12 includes buttocks air cells 71 and thigh air cells 72 that operate by supplying and discharging air. An air pump 70 for operating these air cells by supplying and discharging air is arranged in the space below the seat portion 12 .

The backrest portion 13 has a surface shape that matches the shape of the back of a person, and is disposed so as to be able to adjust the inclination angle with respect to the base portion 11 and the seat portion 12, and has a treatment means for executing a massage therein. It is a configuration provided.

Inside the backrest portion 13, there is a mechanical unit 10 in which a pair of right and left massaging balls 20 as treatment elements and a driving portion 50 for operating them are integrated, and the mechanical unit 10 is supported so as to be movable in the vertical direction of the backrest portion 13. 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 air supply and discharge by the air pump 70 are arranged. Of these, the mechanical unit 10, the back air cell 73, and the waist air cell 74 constitute treatment means for performing massage.

On both left and right sides of the backrest portion 13, a pair of side wall portions with treatment means such as air cells provided on the inner surface side facing the user are protrudingly arranged so as to face the upper arm portion of the user. It is also possible to enable a person to perform a massage.

The backrest frame 13a includes a pair of left and right guide frames 13b which support the mechanical unit 10 while allowing the backrest 13 to move vertically and restricting movement in other directions. They are crossed and connected integrally to form a substantially ladder-like frame structure.

The guide frames 13b have a substantially U-shaped cross section and are longitudinally shaped along the surface of the backrest portion 13 to match the shape of the back of a person. It is a configuration that The mechanical unit 10 is disposed movably along the guide frames 13b, sandwiched between the pair of guide frames 13b. A rack 13c made of resin is arranged on the inner circumference of the guide frame 13b so as to extend over the vertical movement range of the mechanical unit 10. As shown in FIG.

These guide frames 13b allow the mechanical unit 10 to move in the vertical direction of the backrest 13 inside the backrest 13, and restrain and support the movement in the other direction.

The mechanical unit 10 includes a pair of left and right kneading balls 20 that give stimulation such as kneading and hitting to the user, a pair of left and right kneading ball support arms 21 that support the kneading balls 20 in a protruding state, and these kneading ball support arms. A drive unit 50 for massaging the massaging balls 20 through 21 and moving them corresponding to massage such as beating, and a tilting shaft 22 arranged in a direction perpendicular to the vertical direction of the backrest and supporting the drive unit 50 in a tiltable manner. A tooth portion 54 is formed in the same tooth profile arrangement as the external gear whose center is aligned with the tilting shaft 22, and is fixedly disposed outside the driving portion 50, and the tooth portion 54 is oriented parallel to the tilting shaft 22. A rotary shaft 23 arranged in the vicinity, a pinion gear 24 arranged rotatably around the rotary shaft 23 and meshing with a tooth portion 54, one end portion of the tilting shaft 22 and one end portion of the rotary shaft 23, respectively. a first base frame 25 that rotatably supports; a second base frame 26 that rotatably supports the other end of the tilting shaft 22 and the other end of the rotating shaft 23; Guide bodies 17 and 18 are disposed on predetermined flat portions 25a and 25b of the base frames 25 and 26 so as to protrude toward the front side of the backrest portion 13 by a predetermined height, and first and second bases. A roller portion 27 is provided outside the frames 25 and 26 so that the guide frame 13b can move up and down.

The drive unit 50 is attached to a substantially box-shaped housing 51 that encloses the internal mechanism that operates the kneading balls 20 from the outside, and is attached to this housing 51, and massages the kneading balls 20 based on the control of the control unit 40. A kneading motor 63 that generates a driving force for performing a kneading massage, and a kneading motor 63 that is disposed in the housing 51 and generates a driving force for causing the kneading balls 20 to perform a kneading massage based on the control of the control unit 40. A motor 64, a kneading mechanism as the internal mechanism disposed in the housing 51 and moving the kneading balls 20 via the kneading ball support arm 21 based on the driving force from the kneading motor 63 and the hitting motor 64; It is a configuration including a hitting mechanism (not shown). The motors and internal mechanisms of the drive unit 50 are the same as those used in known massage machines, and detailed descriptions thereof are omitted.

The housing 51 is formed by integrally combining a plurality of outer shell members 52 and 53 connected in a direction parallel to the tilting shaft 22 and the rotating shaft 23, and supported so as to be relatively rotatable with respect to the tilting shaft 22. It is a configuration that is As a result, 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 its end facing the first base frame 25 perpendicular to the tilting axis 22 and the rotating axis 23 . It is formed as a continuous side surface portion 52a oriented in the direction of Out of the outer shell members forming the housing 51 , the outer shell member 53 closest to the second base frame 26 has an end portion facing the second base frame 26 that is tilted with respect to the tilting shaft 22 and the rotating shaft 23 . It is formed as a continuous side portion 53a oriented at right angles.

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

The tooth portion 54 has a plurality of teeth formed side by side with the same tooth profile as an external gear having a predetermined pitch circle diameter aligned with the tilting shaft 22 , and is fixedly disposed in the housing 51 and outside the driving portion 50 . It is a configuration that is arranged in The tooth portion 54 meshes with the pinion gear 24 and tilts about the tilt shaft 22 as the pinion gear 24 rotates, thereby tilting the driving portion 50 including the housing 51 . It is formed with a sufficient number of teeth that can give the massaging balls 20 that tilt integrally with the massaging balls 20 a tilting range that allows them to protrude beyond the back position of the user when leaning on the backrest 13. .

The pinion gear 24 is a gear that is rotatably disposed about the rotary shaft 23 and meshes with the toothed portion 54 on the side of the driving portion 50. The forward/backward motor 61 as the one driving source is driven through the rotary 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 rotating shaft, and the other end of the tilting shaft 22 and the other end of the rotating shaft 23 It is rotatably supported.

Specifically, each of the first and second base frames 25 and 26 is a molded body obtained by bending a plurality of portions of the outer peripheral portion of a metal flat plate having a predetermined shape so as to obtain an upright state and the like, and rotates with the tilting shaft 22. It has a plurality of plane portions that are parallel or perpendicular to the axis 23 , and has a shape in which the plane portions intersect at a plurality of corner portions that are continuous in a direction forming a right angle with the tilting axis 22 and the rotation axis 23 .

In the plurality of plane portions, one plane portion having a predetermined size exceeding the distance between the tilting shaft 22 and the rotating shaft 23 in the vertical direction of the backrest portion and parallel to the tilting shaft 22 and the rotating shaft 23 is provided. 25a, 26a, and other flat portions 25b, 26b perpendicular to the tilting axis 22 and the rotating shaft 23 are included, and one of these flat portions 25a, 26a is arranged along the vertical direction of the backrest. .

In each of the base frames 25 and 26, one plane portion 25a and 26a and another plane portion 25b and 26b are arranged so as to directly intersect at a predetermined corner, and the tilting axis 22 of one plane portion 25a and 26a and the direction parallel to the rotating shaft 23, the size of the other flat portions 25b and 26b in the direction perpendicular to the direction in which the predetermined corners continue is formed larger. be done.

More specifically, one flat portion 25a, 26a of each of the base frames 25, 26 is formed as a remaining portion of the metal flat plate that is not raised. Further, the other flat portions 25b and 26b are formed as one of a plurality of standing portions. In addition, the plurality of raised portions including the other flat portions 25b and 26b are bent so that each of the raised portions and the flat portions 25a and 26a have at least groove-like cross-sectional shape portions. Become. The upright portions of the first and second base frames 25 and 26 are formed by bending the corners, which are the bending positions, in a direction perpendicular to the tilting shaft 22 and the rotation shaft 23. It is perpendicular to the tilting axis 22 and the rotating axis 23 .

Among the upright portions, the size of the other flat portions 25b and 26b located outside the respective base frames 25 and 26 and facing the guide frame 13b as the side end portions of the respective base frames 25 and 26 is equal to the size of the tilt axis 22. It is bent and formed so as to have a size equal to or larger than the size of the one parallel plane portions 25a and 26a. As a result, each base frame 25, 26 has a size in the backrest longitudinal direction corresponding to the standing height of the standing portion larger 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 the ends to form other flat portions 25c and 26c parallel to the one flat portions 25a and 26a. , the speed reduction mechanism portion 56 or the bearing portion 55 is fixedly arranged on the separate flat portions 25c, 26c.

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

Further, the lifting motor 62 as another driving source is supported so as to overlap the first base frame 25 with its output shaft perpendicular to the tilting shaft 22 . , the tilting shaft 22 can be driven. The lifting motor 62 is attached to the first base frame 25 via the speed reduction mechanism 57 and generates driving force for lifting the mechanical unit 10 based on the control of the controller 40 .

The speed reduction mechanism 57 includes a worm 57a connected to the output shaft of the lifting motor 62, a worm wheel 57b meshing with the worm 57a, and a worm wheel 57b shifted in a direction parallel to the tilting shaft 22. It has one or a plurality of speed reduction stepped portions 57c disposed between the worm wheel 57b and the tilting shaft 22. As shown in FIG. Further, the reduction mechanism portion 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 driving portion 50 and the other flat portion 25b of the first base frame 25, The end of the tilting shaft 22 is rotatably supported while transmitting rotation to the tilting shaft 22 from the deceleration stepped portion 57c.

The lifting motor 62 is connected to the speed reduction mechanism 57 on the first base frame 25, and the worm 57a and the worm wheel 57b of the speed reduction mechanism 57 and the speed reduction stage are connected from the motor output shaft perpendicular to the tilting shaft 22. By transmitting the driving force to the tilting shaft 22 through the portion 57c, it is possible to increase the reduction ratio without increasing the size of the worm wheel 57b by multi-stage deceleration. The amount of protrusion of the speed reduction mechanism 57 in each direction perpendicular to the tilting shaft 22 can be suppressed, and the protrusion of the mechanical unit 10 can be reduced. In addition, by providing the speed reduction stepped portion 57c and setting a large speed reduction ratio without increasing the size of the worm wheel 57b, it is possible to reduce the size of the motor, which generally tends to increase in size as the rated speed decreases. can. Furthermore, the speed reduction stepped portion 57c is displaced from the worm wheel 57b in a direction parallel to the tilting shaft 22 which does not affect the overall size of the mechanical unit 10, and the speed reduction mechanism portion 57 itself is also located on the first base. It is provided in such a manner that it can be efficiently accommodated around the tilting shaft 22 between the other flat portion 25b of the frame 25 and the driving portion 50, so that the size of the mechanical unit 10 is increased while ensuring a large reduction ratio as the speed reduction mechanism portion 57. Therefore, the mechanical unit 10 as a whole can be made compact.

The second base frame 26 is provided with a bearing portion 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. be.

Further, the advancing/retreating motor 61 as the one driving source is supported so as to overlap the second base frame 26 with the output shaft of the motor perpendicular to the rotation shaft 23 , and the output shaft is supported by the reduction mechanism 56 . , so that the rotary shaft 23 can be driven. The advancing/retreating motor 61 is attached to the second base frame 26 via the speed reduction mechanism 56 and generates driving force for tilting the driving section 50 based on the control of the control section 40 .

The speed reduction mechanism 56 includes a worm 56a connected to the output shaft of the advance/retreat motor 61, a worm wheel 56b that meshes with the worm 56a, and a worm wheel 56b that is displaced in a direction parallel to the rotation shaft 23. It has one or a plurality of speed reduction stepped portions 56c disposed between the worm wheel 56b and the rotating shaft 23. As shown in FIG. 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, and supports the end of the rotary shaft 23 while transmitting rotation from the speed reduction stepped portion 56c to the rotary shaft 23. there is

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

In addition, by providing the stepped reduction portion 56c and setting a large reduction ratio without increasing the size of the worm wheel 56b, it is possible to reduce the size of the motor, which generally tends to increase in size as the rated speed decreases. Moreover, the stepped reduction portion 56c is displaced from the worm wheel 56b in a direction parallel to the rotary shaft 23, which does not affect the overall size of the mechanical unit 10, so that the stepped reduction portion 56c has a large reduction ratio. is ensured, the size of the mechanical unit 10 does not increase, and the overall size of the mechanical unit can be reduced.

For each of the first and second base frames 25 and 26, the tilting shaft 22 has one end connected to the deceleration mechanism 57 of the first base frame 25 and the other end connected to the second base. It is provided so as to be pivotally supported by the bearing portion 58 of the frame 26 . Further, the rotary shaft 23 is arranged such that one end thereof is pivotally supported by the bearing portion 55 of the first base frame 25 and the other end thereof is connected and supported by the speed reduction mechanism portion 56 of the second base frame 26. be done. Thus, the tilting shaft 22, 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 supporting each shaft is formed by bending a single metal plate, and the rigidity is ensured by the upright portions created by bending. By doing so, the structure can be simplified and the weight can be reduced.

The tilting shaft 22, the rotating shaft 23, and the first and second base frames 25 and 26 are connected in a frame shape, and the tilting shaft 22 extends axially through the first and second base frames 25 and 26. The backrest portion is rotatably supported in a direction orthogonal to the vertical direction, and the housing 51 of the driving portion 50 is supported so as to be relatively rotatable around the tilting shaft 22, so that the driving portion 50 is tilted about the tilting shaft 22. , it is supported so as to be tiltable between the first and second base frames 25 and 26 .

The guide bodies 17 and 18 are disposed on the flat portions 25a and 26a of the first and second base frames 25 and 26 over the entire longitudinal direction of the flat portions 25a and 26a. The flat portions 25a and 26a protrude toward the front side of the backrest portion 13 by a predetermined height, and cover the ends of members such as screws protruding from the surfaces of the flat portions 25a and 26a as a kind of cover. be. These guide bodies 17 and 18 have both ends in the longitudinal direction of the flat portions 25a and 26a that are rounded, and the base frame adjacent to both ends in the longitudinal direction of the flat portions 25a and 26a. In this arrangement, the curved portions 17a, 17b, 18a, and 18b are positioned near the end faces of 25 and 26, respectively.

Thus, the guide bodies 17 and 18 protruding from the plane portions 25a and 26a of the base units 25 and 26 are positioned closest to the front side of the backrest portion 13 on the base frames 25 and 26. ing. As a result, when the mechanical unit 10 moves the backrest portion 13 in the vertical direction, even if the back surface of the skin portion of the backrest portion 13 comes close to the base frames 25 and 26, the guide bodies 17 and 18 do not move the skin portion. and the base frames 25 and 26 to prevent contact between the skin portion and the surface of the base frame or the end portion of the member protruding from this surface, thereby protecting the skin portion and protecting the user's body through the skin portion. can also be prevented from touching the base frames 25 and 26, so that the user does not feel uncomfortable due to contact with the base frames. Further, the curved portions 17a, 17b, 18a, 18b at the ends of the guide bodies 17, 18 are arranged near the end faces of the base frames 25, 26, and when the skin approaches the end faces of the base frames, the guide bodies protrude. The curved surface portions 17a, 17b, 18a, and 18b of 17 and 18 are in contact with the skin portion to prevent the skin portion from approaching the end surfaces of the base frames 25 and 26 and their edge portions. It is possible to prevent the back surface of the skin from being scratched. The curved portions 17a, 17b, 18a, and 18b themselves can smoothly come into contact with the skin portion, and the skin portion does not get caught. Relative movement with the part can be made smooth.

Further, the first and second base frames 25 and 26 are connected by connecting rods 41, which connect the tilting shaft 22 and the rotating shaft of the plane portions of the base frames 25 and 26. It is fixed by screws to one plane portions 25a and 26a parallel to 23 . When the first and second base frames are connected by fixing the connecting pipes on the respective one plane portions in this way, they are connected to the other plane portions 25b and 26b which are perpendicular to the tilting shaft 22 and the rotation shaft 23. Compared with the case where the rod 41 is attached, the fixed surface is less flexed and can greatly contribute to the strength improvement by the connecting rod.

The roller portion 27 is rotatable around a central axis that is parallel to the tilting shaft 22, and is arranged outside the first and second base frames 25 and 26. The roller portion 27 is rotationally driven by a lifting motor 62. , the mechanical unit 10 is moved up and down along the guide frame 13b.

The roller portion 27 is tilted through the other flat portions 25b and 26b at a predetermined location near one of the flat portions 25b and 26b located at the side ends of the base frames 25 and 26. It is attached to both ends of the shaft 22 and arranged so as to be rotatable integrally with the tilting shaft 22 which also serves as the central shaft. It is a mechanism that rotates as the shaft 22 is rotationally driven.

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

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

The roller portion 27 and the guide roller 28 positioned on both sides of the mechanical unit 10 are inserted into a pair of guide frames 13b in the backrest portion 13, and the gear portion 27a of the roller portion 27 is engaged with the rack 13c of the guide frame 13b. The mechanical unit including the tilting shaft 22 and the base frames 25 and 26 is made to mesh and the guide surface portion 27b is in rolling contact with the opposite surface of the guide frame 13b to the surface on which the rack 13c is provided. 10 is supported between the guide frames 13b so that the mechanical unit 10 can move in the vertical direction of the backrest and is restricted from moving in other directions.

When the roller portion 27 rotates as it is driven by the lifting motor 62, it changes its meshing position with the rack 13c and travels along the guide frame 13b. By moving the part 13 up and down, the position of the kneading balls 20 on the backrest part 13 (the part to be massaged by the kneading balls) can be changed up and down.

Depending on the accuracy of the shape and arrangement of the guide frames 13b, the mechanical unit 10 and the pair of guide frames 13 may move in the lateral direction (parallel to the tilting axis 22 and the rotating axis 23) within the movable range of the backrest portion of the mechanical unit 10 in the vertical direction. direction) is not constant, and when the mechanical unit 10 moves up and down, the roller portion 27 and the guide roller 28 of the mechanical unit 10 move with relative lateral vibration with respect to the guide frame 13b. be in a state to Even in such a case, the amount of protrusion of the guide roller 28 on the driven side from the other flat portions 25b and 26b is made larger than the roller portion 27 on the drive side in advance, so that the roller portion is 27 and the guide roller 28 come too close to each other, the inner surface of the guide frame 13b perpendicular to the tilting axis 22 and the rotation axis 23 comes into contact with the lateral end surface of the guide roller 28, and the guide frame 13b and the roller portion are brought into contact with each other. Contact with the lateral end face of the roller portion 27 is less likely to occur, and the lateral end face of the roller portion 27, which receives the driving force and rotates, contacts the guide frame 13b to generate frictional resistance, thereby avoiding an increase in the driving load. be able to. In addition, since the driven side tends to shake laterally starting from the driving side, stable running can be achieved by restricting the lateral direction only on the driven side.

Furthermore, the accuracy of the lateral positional relationship between the guide frame 13b and the mechanical unit 10 is borne by the guide rollers 28 whose end surfaces may contact each other. can be relatively easily handled and accuracy can be ensured. In addition, the precision of the arrangement of the roller portions 27 need not be set high. In the case of the roller portion 27 in the present embodiment, in order to obtain a predetermined accuracy for the arrangement of the roller portion 27, not only the roller portion 27 but also the tilting shaft 22 and a mechanism related to the support of the roller portion 27 including the support mechanism thereof are required. Although it is essential to pursue overall accuracy, the conditions for such accuracy can be relaxed, so the manufacturing process can be simplified accordingly, and the cost associated with manufacturing the mechanical unit can be reduced.

The armrests 14 are arranged on both sides of the seat 12 and are formed to stably support the user's forearms even when the backrest 13 changes the reclining angle or the seat 12 tilts. Configuration. The armrest 14 may also be provided with an air cell operated by the supply and discharge of air by the air pump 70, so that the forearm of the user can be massaged.

The leg support portion 15 is positioned on the front side of the seat portion 12 and arranged to be tiltable around the front end of the seat portion 12, and the tilt angle is adjusted by a built-in actuator (not shown). The leg support section 15 may also be provided with leg air cells operated by air supply and discharge by the air pump 70, and treatment means such as rollers that press the legs while moving up and down.

The operation unit 30 includes a large number of switches and a display unit for receiving various operation inputs to the massage machine, is detachably installed on a stand 31 on the side of the massage machine 1, and transmits operation inputs related to massage to the control unit 40. It is something to do. The position of the stand 31 is adjustable so that the positions of the switches and the display section of the operation section 30 are optimized for the user.

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

The control unit 40 is a computer equipped with a CPU, a memory, an input/output interface, etc. as its hardware configuration, and operates the computer as the control unit 40 by a program stored in the memory or the like. The computer forming the control unit 40 may be a microcomputer in which a CPU, memory, ROM, etc. are integrally formed.

The main part of the computer unit forming the control part 40 is arranged in a predetermined space inside the massage machine 1 such as directly below the seat part 12, and the part related to the control of the various motors of the mechanical unit 10 It is arranged on the machine unit 10 as a control circuit section. (Not shown) Then, the control unit 40 is in a state of being able to communicate with the operation unit 30, various motors of the mechanical unit 10, actuators for tilting the seat unit 12, the backrest unit 13, and the leg support unit 15, It is electrically connected to the air pump 70, and when detecting the position of each part of the user's body, by outputting a control signal based on a preset position detection program, and when performing a massage, set massage data The operation of these drive mechanisms is controlled by the control signal output based on .

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 mechanical unit 10 and each actuator, so that the state of the mechanical unit 10, the seat portion 12, the backrest portion 13, And while grasping the state such as the inclination of the leg support portion 15, the operation control of the driving means such as the motor and the actuator is performed.

In addition, the control unit 40 controls the mechanical unit 10 to detect the position of each part of the user's body prior to massaging, and moves the mechanical unit 10 from the initial position on the backrest 13 to the guide frame 13b, as in a known massage machine. In the process of moving the kneading balls 20 along the user, changes in the pressure on the kneading balls 20 from the user leaning on the backrest 13, changes in the inclination of the kneading balls 20, etc. 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 this embodiment will be described. As a premise, the main power of the massage machine 1 is turned on in a state in which the user is seated on the massage machine 1 and the back is leaned against the backrest part 13, the massage machine 1 is activated, and the body shape of the user is detected. After the preparatory operation before starting the massage and the adjustment of the inclination angle of the backrest part 13 etc. are completed, furthermore, the user inputs the operation state instruction such as the massage course, etc. has already been executed or is about to be executed.

In the case of massage with the kneading balls 20, the control unit 40 operates the lifting motor 62 to rotate each roller unit 27 according to the set massage content, and moves the entire mechanical unit 10 up and down with respect to the guide frame 13b. Move it to adjust the vertical position of the kneading balls 20.例文帳に追加

In addition, the control unit 40 operates and rotates the advance/retreat motor 61 so as to advance/retreat the kneading balls 20 with respect to the user by a preset 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 section 50 is tilted with respect to the rest of the mechanical unit 10 based on the engagement between the pinion gear 24 and the tooth section 54 . By tilting the drive unit 50, the integral massaging balls 20 are advanced and retracted with respect to the user, the amount of protrusion of the massaging balls 20 toward the user is adjusted, and the massaging balls 20 are positioned at the massage target site.

After this, or in parallel with the movement of the kneading balls 20, the control unit 40 operates the kneading motor 63 and/or the hitting motor 64 according to the type of massage to perform the set kneading, hitting, etc. 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 that the kneading balls 20 receive 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. Against this force, the housing 51 is supported by the tilting shaft 22 and is also supported by the rotating shaft 23 through the meshing of the toothed portion 54 on the outside of 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 perpendicular to the tilting axis 22 and the rotating axis 23, and tries to deform the housing 51 itself. , 53 , each of which is connected and integrated in a direction parallel to the tilting axis 22 and the rotation axis 23 , and the outer shell member 52 closest to the first 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 oriented perpendicular to the tilt axis 22 and the rotation axis 23, respectively. are formed as side portions 52a and 53a that are continuous with each other, so that the side portions 52a and 53a are not easily deformed in a direction perpendicular to the tilting shaft 22 and the rotating shaft 23. As shown in FIG.

As a result, even if the reaction force from the kneading balls 20 side is applied to the housing 51 as stress in a direction perpendicular to the tilting shaft 22 and the rotating shaft 23, and the housing 51 itself is to be deformed, the force is parallel to the direction of such force. The side portions 52a and 53a of the outer shell members 52 and 53, which are continuous with the outer shell members 52 and 53, maintain their shapes to suppress deformation of other portions of the outer shell members. In addition to this, the connecting surfaces of the respective outer shell members 52 and 53 are parallel to the direction of the force, so that the adjacent outer shell members 52 and 53 are brought too close to each other or separated from each other. Since an excessive force is unlikely to be generated, it is possible to reliably prevent the outer shell members 52 and 53 connected to the housing 51 from being deformed and damaged.

In addition, the teeth 54 are arranged in the vicinity of the side portions 52a and 53a in the housing 51, and the teeth 54 to which force is applied are integrated with the side portions 52a and 53a and supported, so that the massaging balls 20 side Even in a situation in which the driving portion 50 tries to tilt due to the reaction force from the pinion gear 24 side and a relative force is applied to the tooth portion 54 in a direction perpendicular to the rotation shaft 23, the housing side portion 52a near the tooth portion 54 , and 53a, the positions of the teeth 54 on the housing 51 do not change, and the force applied to the teeth 54 can prevent the housing 51 from being deformed and damaged. At the same time, the positional relationship between the toothed portion 54 and the pinion gear 24 is maintained, and the transmission of the driving force between the pinion gear 24 and the toothed portion 54 is properly executed.

Furthermore, 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 to it, while the kneading balls 20 receive the reaction from the user. Along with the force, the pinion gear 24 receives a large reaction force from the tooth portion 54 side at the same time. As a result, the rotating shaft 23 to which the force is transmitted from the pinion gear 24 receives a relative force to change the position with respect to the tilting shaft 22, which is the center of the tilting movement of the driving portion 50 and the tooth portion 54. A force is applied to each of the base frames 25 and 26 to change the mutual positional relationship between 22 and rotating shaft 23 .

The force applied to each base frame 25, 26 is perpendicular to the tilting axis 22 and the rotation axis 23, and acts as a bending stress on each base frame 25, 26. A structure that is not easily deformed by forces in such directions, more specifically, one flat portion 25a, 26a that is arranged between the tilting shaft 22 and the rotating shaft 23 and is parallel to each axis, is oriented perpendicularly thereto. In particular, the other plane portions 25b and 26b arranged between the tilting shaft 22 and the rotating shaft 23 are made larger than the one plane portions 25a and 26a. Thus, deformation of each base frame 25, 26 can be prevented, and the positional relationship between the tilting shaft 22 and the rotating shaft 23 on the base frames 25, 26 can be maintained.

For this reason, there is no change that makes the connection and interlocking between parts insufficient, for example, the meshing state between the tooth portion 54 on the driving portion 50 and the pinion gear 24 on the rotating shaft 23 becomes shallow. Even if the machine 20 comes into contact with the user and receives a large force, abnormal force is not concentrated on each part of the mechanical unit 10, preventing breakage of the parts and affecting the user. You can also prevent it.

Since unnecessary changes in the positional relationship between the parts of the mechanical unit 10 are unlikely to occur, the control part 40 can operate each mechanism with high precision, and the appropriate massage for the user can be stably and continuously executed. You can finish the massage at the correct timing.

Thus, in the mechanical unit of the massage machine according to the present embodiment, both ends of the tilting shaft 22 supporting the driving portion 50 and the rotating shaft 23 involved in the tilting of the driving portion 50 are independent of each other. The two base frames 25, 26 are used for support, and the size of the direction perpendicular to the tilting axis 22 and the rotation axis 23 of each base frame 25, 26 and corresponding to the front-rear direction of the backrest portion 13 is Since the size of each base frame 25, 26 is made larger than the size in the direction parallel to the tilting shaft 22 and the rotating shaft 23, it is difficult to deform the respective base frames 25 and 26 against the force applied in the direction perpendicular to the tilting shaft 22 or the rotating shaft 23. A large reaction force is applied to the kneading balls 20 to relatively move the driving part 50, and a force to change the mutual positional relationship between the tilting shaft 22 and the rotating shaft 23 is applied to the base frames 25 and 26 from the driving part 50 side. Even in such a case, the positional relationship between the tilting shaft 22 and the rotating shaft 23 on the base frames can be maintained without deformation of the base frames 25 and 26, and the connection and interlocking of each mechanical component can be maintained in an appropriate state. The parts can be prevented from being damaged without applying an abnormal force to the massager, and the driving part 50 can be reliably tilted for adjusting the position of the treatment device, thereby improving the reliability and stability of the operation of the massager.

In the massage machine according to the above-described embodiment, each of the first and second base frames 25 and 26 has a groove-like cross-sectional shape by bending a flat metal plate to produce an upright portion. , The other flat portions 25b and 26b, which are standing portions, are formed to be larger in size than the flat portions 25a and 26a. It is also possible to adopt a configuration in which a member having a predetermined cross-sectional shape having at least In that case, in addition to metal materials such as shaped steel and extruded materials, it is also possible to use moldings of synthetic resin materials as long as they have the required strength.

1 massage machine 10 mechanical unit 11 base 12 seat 13 backrest 13a backrest frame 13b guide frame 13c rack 14 armrest 15 leg support 17, 18 guide bodies 17a, 17b curved portions 18a, 18b curved portion 20 Kneading ball 21 Kneading ball support arm 22 Tilting shaft 23 Rotation shaft 24 Pinion gear 25 First base frame 25a One flat portion 25b Other flat portion 25c Flat portion 26 Second base frame 26a One flat portion 26b Other flat portion 26c Plane portion 27 Roller portion 27a Gear portion 27b Guide surface portion 28 Guide roller 30 Operation portion 31 Stand 40 Control portion 41 Connecting rod 50 Drive portion 51 Housings 52, 53 Outer shell members 52a, 53a Side portion 54 Tooth portion 55 Bearing portion 56 Deceleration Mechanism portion 56a Worm 56b Worm wheel 56c Reduction step portion 57 Reduction mechanism portion 57a Worm 57b Worm wheel 57c Reduction step portion 58 Bearing portion 61 Advance/retreat motor 62 Lifting motor 63 Kneading motor 64 Hitting motor 70 Air pump 71 Buttock air cell 72 Air cells for thighs 73 Air cells for back 74 Air cells for waist

Claims (7)

A massage machine comprising: a mechanical unit arranged in a backrest portion for moving treatment elements to perform a predetermined massage for a user ; and a pair of guide frames respectively arranged on the left and right inside the backrest portion. ,
The mechanical unit is
a first shaft arranged in a direction perpendicular to the up-down direction and the front-rear direction of the backrest;
a second axis oriented parallel to the first axis;
A first base frame, which is a member whose longitudinal direction is perpendicular to the first and second shafts and which rotatably supports one end of the first shaft and one end of the second shaft, respectively. and,
A member whose longitudinal direction is perpendicular to the first and second shafts, and which rotatably supports the other end of the first shaft and the other end of the second shaft, respectively. base frame and
a first roller portion that is rotatably attached to the first plane portion of the first base frame about a central axis parallel to the first axis and driven to rotate by a drive source; a first guide roller driven by the roller portion;
a second roller portion that is rotatably attached to the second flat portion of the second base frame about a central axis parallel to the first axis and driven to rotate by the drive source; A second guide roller driven by the roller part of
with
The first roller portion and the first guide roller are in contact with the first guide frame of the pair of guide frames so as to be able to move up and down, and the second roller portion and the second guide a roller in contact with a second guide frame of the pair of guide frames so as to be able to move up and down;
The amount of protrusion of the first guide roller from the first plane portion is greater than the amount of protrusion of the first roller portion from the first plane portion, and the second guide roller the amount of protrusion from the flat portion is greater than the amount of protrusion of the second roller portion from the second flat portion;
The first and second roller portions and the first and second guide rollers are inserted into the pair of guide frames,
The gear portion of the first roller portion meshes with the rack of the first guide frame, the cylindrical guide surface portion of the first roller portion is in rolling contact with the first guide frame,
The gear portion of the second roller portion meshes with the rack of the second guide frame, the cylindrical guide surface portion of the second roller portion is in rolling contact with the second guide frame,
The guide surface portion of the first roller portion is arranged outside the gear portion of the first roller portion and has a larger diameter than the gear portion; A massage machine that is arranged outside the gear portion of the body and has a larger diameter than the gear portion. A massage machine comprising: a mechanical unit arranged in a backrest portion for moving treatment elements to perform a predetermined massage for a user ; and a pair of guide frames respectively arranged on the left and right inside the backrest portion. ,
The mechanical unit is
a first shaft arranged in a direction perpendicular to the up-down direction and the front-rear direction of the backrest;
a second axis oriented parallel to the first axis;
a first base frame that rotatably supports one end of the first shaft and one end of the second shaft;
a second base frame that rotatably supports the other end of the first shaft and the other end of the second shaft;
a first roller portion that is rotationally driven by a drive source and attached to one end of the first shaft; a second roller portion that is attached to the other end of the first shaft;
A first guide roller attached to one end side of the second shaft and driven by the first roller portion, and a second guide roller attached to the other end side of the second shaft and driven by the second roller portion guide rollers of
with
The first roller portion and the first guide roller are in contact with the first guide frame of the pair of guide frames so as to be able to move up and down, and the second roller portion and the second guide a roller in contact with a second guide frame of the pair of guide frames so as to be able to move up and down;
the first base frame has a first planar portion perpendicular to the first axis, the second base frame has a second planar portion perpendicular to the first axis, The amount of protrusion of the first guide roller from the first plane portion is greater than the amount of protrusion of the first roller portion from the first plane portion, and the second guide roller the amount of protrusion from the flat portion is greater than the amount of protrusion of the second roller portion from the second flat portion;
The first and second roller portions and the first and second guide rollers are inserted into the pair of guide frames,
The gear portion of the first roller portion meshes with the rack of the first guide frame, the cylindrical guide surface portion of the first roller portion is in rolling contact with the first guide frame,
The gear portion of the second roller portion meshes with the rack of the second guide frame, the cylindrical guide surface portion of the second roller portion is in rolling contact with the second guide frame,
The guide surface portion of the first roller portion is arranged outside the gear portion of the first roller portion and has a larger diameter than the gear portion; A massage machine that is arranged outside the gear portion of the body and has a larger diameter than the gear portion. A massage machine comprising: a mechanical unit arranged in a backrest portion for moving treatment elements to perform a predetermined massage for a user ; and a pair of guide frames respectively arranged on the left and right inside the backrest portion. ,
The mechanical unit is
a first shaft arranged in a direction perpendicular to the up-down direction and the front-rear direction of the backrest;
a second axis oriented parallel to the first axis;
a first base frame that rotatably supports one end of the first shaft and one end of the second shaft;
a second base frame that rotatably supports the other end of the first shaft and the other end of the second shaft;
A first roller portion that is rotatably attached to the first base frame about a central axis parallel to the first axis and driven to rotate by a drive source; and a second roller portion that follows the first roller portion. one guide roller;
A second roller portion that is rotatably attached to the second base frame about a central axis parallel to the first axis and driven to rotate by the drive source, and driven by the second roller portion. a second guide roller;
with
The first roller portion and the first guide roller are in contact with the first guide frame of the pair of guide frames so as to be able to move vertically, and the second roller portion and the second guide roller are in contact. is in contact with the second guide frame of the pair of guide frames so as to be able to move vertically,
The distance between the inner surface of the first guide frame perpendicular to the first axis and the lateral end surface of the first guide roller is the width of the inner surface of the first guide frame and the first roller portion. smaller than the distance to the direction end face,
The distance between the inner surface of the second guide frame perpendicular to the first axis and the lateral end surface of the second guide roller is the width of the inner surface of the second guide frame and the second roller portion. smaller than the distance to the direction end face,
The first and second roller portions and the first and second guide rollers are inserted into the pair of guide frames,
The gear portion of the first roller portion meshes with the rack of the first guide frame, the cylindrical guide surface portion of the first roller portion is in rolling contact with the first guide frame,
The gear portion of the second roller portion meshes with the rack of the second guide frame, the cylindrical guide surface portion of the second roller portion is in rolling contact with the second guide frame,
The guide surface portion of the first roller portion is arranged outside the gear portion of the first roller portion and has a larger diameter than the gear portion; A massage machine that is arranged outside the gear portion of the body and has a larger diameter than the gear portion. A massage machine comprising: a mechanical unit arranged in a backrest portion for moving treatment elements to perform a predetermined massage for a user ; and a pair of guide frames respectively arranged on the left and right inside the backrest portion. ,
The mechanical unit is
a first shaft arranged in a direction perpendicular to the up-down direction and the front-rear direction of the backrest;
a second axis oriented parallel to the first axis;
a first base frame that rotatably supports one end of the first shaft and one end of the second shaft;
a second base frame that rotatably supports the other end of the first shaft and the other end of the second shaft;
a first roller portion that is rotationally driven by a drive source and attached to one end of the first shaft; a second roller portion that is attached to the other end of the first shaft;
A first guide roller attached to one end side of the second shaft and driven by the first roller portion, and a second guide roller attached to the other end side of the second shaft and driven by the second roller portion guide rollers of
with
The first roller portion and the first guide roller are in contact with the first guide frame of the pair of guide frames so as to be able to move vertically, and the second roller portion and the second guide roller are in contact. is in contact with the second guide frame of the pair of guide frames so as to be able to move vertically,
The distance between the inner surface of the first guide frame perpendicular to the first axis and the lateral end surface of the first guide roller is the width of the inner surface of the first guide frame and the first roller portion. smaller than the distance to the direction end face,
The distance between the inner surface of the second guide frame perpendicular to the first axis and the lateral end surface of the second guide roller is the width of the inner surface of the second guide frame and the second roller portion. smaller than the distance to the direction end face,
The first and second roller portions and the first and second guide rollers are inserted into the pair of guide frames,
The gear portion of the first roller portion meshes with the rack of the first guide frame, the cylindrical guide surface portion of the first roller portion is in rolling contact with the first guide frame,
The gear portion of the second roller portion meshes with the rack of the second guide frame, the cylindrical guide surface portion of the second roller portion is in rolling contact with the second guide frame,
The guide surface portion of the first roller portion is arranged outside the gear portion of the first roller portion and has a larger diameter than the gear portion; A massage machine that is arranged outside the gear portion of the body and has a larger diameter than the gear portion. the gear portion of the first guide roller meshes with the rack of the first guide frame;
a cylindrical guide surface portion of the first guide roller is in rolling contact with the first guide frame;
the gear portion of the second guide roller meshes with the rack of the second guide frame;
the cylindrical guide surface portion of the second guide roller is in rolling contact with the second guide frame;
The guide surface portion of the first guide roller is disposed outside the gear portion of the first guide roller and has a larger diameter than the gear portion, and the guide surface portion of the second guide roller is positioned at the second guide. The massage machine according to any one of claims 1 to 4, which is arranged outside the gear portion of the roller and has a larger diameter than the gear portion . a cylindrical guide surface portion of the first guide roller is in rolling contact with the first guide frame;
The amount of protrusion of the guide surface portion of the first guide roller from the first plane portion is larger than the amount of protrusion of the guide surface portion of the first roller portion from the first plane portion,
the cylindrical guide surface portion of the second guide roller is in rolling contact with the second guide frame;
2. The amount of protrusion of said guide surface portion of said second guide roller from said second plane portion is larger than the amount of protrusion of said guide surface portion of said second roller portion from said second plane portion. , 2, or 5. a cylindrical guide surface portion of the first guide roller is in rolling contact with the first guide frame;
The distance between the inner surface of the first guide frame and the lateral end surface of the guide surface portion of the first guide roller is the distance between the inner surface of the first guide frame and the guide surface portion of the first roller portion. less than the distance to the lateral end face,
the cylindrical guide surface portion of the second guide roller is in rolling contact with the second guide frame;
The distance between the inner surface of the second guide frame and the lateral end surface of the guide surface portion of the second guide roller is the distance between the inner surface of the second guide frame and the guide surface portion of the second roller portion. 6. The massage machine according to claim 3, 4 or 5, which is smaller than the distance to the lateral end face.

Images