Massage machine

Abstract

To provide a massage machine capable of applying appropriate pressure to the area being treated. [Solution] The massage machine 1 comprises a main body 3 positioned opposite a predetermined part of the user to be treated, and a massage mechanism 4 provided on the inside of the treatment surface S of the main body 3 facing the part to be treated, which presses and massages the part to be treated. The massage mechanism 4 includes a first treatment element 51 that applies massage to the part to be treated, and a position changing mechanism 26 that changes the vertical position of the first treatment element 51. The position changing mechanism 26 changes the position of the treatment element between a first state in which the first treatment element 51 is lowered and a second state in which the first treatment element 51 is raised.

Description

Technical Field

[0001] The present invention relates to a massager that presses and massages the user's buttocks, back, etc.

Background Art

[0002] In a chair-type massager having a seat portion and a backrest portion, a plurality of treatment elements are provided side by side in the front-rear direction inside the seat portion, and a massage mechanism that presses the treatment elements against the buttocks of a user sitting on the seat from below for massage is known (for example, Patent Document 1).

[0003] Specifically, the massager of Patent Document 1 includes a seat portion, a massage mechanism that massages the buttocks of a user sitting on the seat portion, and a guide rail that guides the massage mechanism in the front-rear direction inside the seat portion. The massage mechanism has two treatment elements (massage members) arranged side by side in the front-rear direction below the seat surface, and is configured to press the treatment elements against the buttocks of the user from below the seat surface to massage the buttocks.

[0004] Further, the guide rail extends in the front-rear direction inside the seat portion, and by guiding the massage mechanism along the guide rail in the front-rear direction, the treatment elements can be pressed against the range from the buttocks to the thighs. That is, the massage mechanism can massage not only the buttocks but also the thighs by moving the treatment elements in the front-rear direction.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] Incidentally, conventional chair-type massage machines are configured so that the backrest can tilt backward relative to the seat. Furthermore, in this type of massage machine, there are also known models where tilting the backrest backward causes the seat to tilt upward in conjunction with it.

[0007] However, with the above-mentioned massage machine, for example, if the backrest is tilted backward and the user's posture changes, the user's center of gravity shifts accordingly, and the load applied in the direction normal to the seat surface decreases. Consequently, the massager may not make strong enough contact with the area being treated, and there was a risk that an appropriate massage effect could not be obtained.

[0008] This invention has been made in view of the above problems, and aims to provide a massage machine with excellent massage performance that can apply appropriate pressure to the area being treated. [Means for solving the problem]

[0009] To solve the above problems, the massage machine of the present invention employs the following technical means.

[0010] A massage machine according to one aspect of the present invention comprises a main body positioned opposite a predetermined part of the user to be treated, and a massage mechanism provided on the inside of the treatment surface of the main body opposite the part to be treated, for pressing and massaging the part to be treated, wherein the massage mechanism includes a first treatment element for massaging the part to be treated, and a position changing mechanism for changing the vertical position of the first treatment element, the position changing mechanism changing the position of the treatment element between a first state in which the first treatment element is lowered and a second state in which the first treatment element is raised.

[0011] The massage mechanism includes a first treatment element and a second treatment element for applying massage to the area to be treated, the first and second treatment elements are arranged at a predetermined distance from each other in the front-rear direction, and the mechanism includes a position changing mechanism for changing the vertical position of the first and second treatment elements, the position changing mechanism is preferably used to change the position of the treatment elements between a first state in which the second treatment element is raised upward and a second state in which the first treatment element is raised upward.

[0012] The massage mechanism comprises an outer frame, an arm portion having a first treatment element at one end and pivotally supported on the outer frame at the other end, an eccentric cam pivotally supported on the outer frame and rotating to reciprocate the arm portion at least in the vertical direction, a movable frame pivotally supported on the outer frame at its support end, and a link frame extending between the tip of the movable frame and the end of the arm portion on the first treatment element side, pivotally connecting the movable frame and the arm portion. The position changing mechanism may change the position of the treatment element by swinging the movable frame around its support end.

[0013] The massage mechanism comprises an outer frame, an arm portion having a first and second treatment element at both ends and pivotally supported by the outer frame at a point midway between the two ends, an eccentric cam pivotally supported by the outer frame and rotating to reciprocate the arm portion at least vertically, a movable frame pivotally supported by the outer frame at its support end, and a link frame extending between the tip of the movable frame and the end of the arm portion on the first treatment element side, pivotally connecting the movable frame and the arm portion. The position changing mechanism may change the position of the treatment elements by swinging the movable frame around its support end.

[0014] The massage mechanism is provided with an air supply device that supplies air, and the position changing mechanism may have an airbag that causes the movable frame to oscillate by the pressure of the air supplied from the air supply device.

[0015] The outer frame has a base frame positioned facing the movable frame, and the airbag is provided between the movable frame and the base frame, and the air pressure causes the movable frame to swing vertically so as to separate it from the base frame.

[0016] The massage mechanism comprises a drive unit for driving the massage mechanism and a casing for housing the drive unit. The airbag is provided between the movable frame and the casing, and the air pressure causes the movable frame to swing vertically away from the casing.

[0017] The airbags may be provided on the upper and lower surfaces of the movable frame.

[0018] The main body includes a seat portion positioned opposite the user's buttocks, which are the part to be treated, and the massage mechanism is preferably located on the inside of the seat surface of the seat portion, which is the treatment surface.

[0019] The main body includes a seat portion positioned opposite the user's buttocks, which are the part to be treated, and a backrest portion that is erected at the rear of the seat portion. The backrest portion is configured to be tiltable backward relative to the seat portion, and the massage mechanism may change the position of the treatment element to the second state as the backrest portion is tilted backward.

[0020] The first treatment device is preferably located in front of the second treatment device. [Effects of the Invention]

[0021] According to the massage machine of the present invention, the relative positions of the treatment elements can be appropriately switched, so that even if the user's posture changes, appropriate pressure can be applied to the area being treated on the user. This makes it possible to provide a massage machine with superior massage performance. [Brief explanation of the drawing]

[0022] [Figure 1] It is a perspective view of the massage machine according to the embodiment. [Figure 2] It is a side view showing the arrangement configuration of the first massage mechanism. [Figure 3] It is a perspective view of the first massage mechanism. [Figure 4] It is a perspective view of a state in which a part of the first massage mechanism is disassembled. [Figure 5] It is a perspective view showing the internal structure of the first massage mechanism. [Figure 6] It is a side view of the first massage mechanism in which the movable frame is in the lower position. [Figure 7] It is a side view of the first massage mechanism in which the movable frame is in the intermediate position. [Figure 8] It is a side view of the first massage mechanism in which the movable frame is in the upper position. [Figure 9] It is a schematic configuration diagram of the control device.

Mode for Carrying Out the Invention

[0023] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the embodiments described below are examples embodying the present invention, and do not limit the configuration of the present invention with specific examples.

[0024] The massage machine 1 of the present embodiment is a chair-type massage machine (massage chair), and has a function of massaging treatment parts such as the user's neck, shoulders, back, waist, hips, thighs, calves, etc. when the user is seated on the massage machine 1. [[ID={41}]]

[0025] As shown in FIG. 1, the massage machine 1 includes a base portion 2, a main body portion 3, and a massage mechanism 4. The main body portion 3 includes a seat portion 3A, a backrest portion 3B, and a footrest portion 3C. The massage mechanism 4 includes a first massage mechanism 4A, a second massage mechanism 4B, and a third massage mechanism 4C.

[0026] As shown in Figure 2, the massage machine 1 comprises a power supply unit 5, an actuator unit 6, and an air supply unit 7. The power supply unit 5, actuator unit 6, and air supply unit 7 are located inside the base unit 2. The power supply unit 5 is connected to each massage mechanism 4, actuator unit 6, and air supply unit 7 via electrical wiring, and supplies driving power to these massage mechanisms 4, actuator unit 6, and air supply unit 7. The air supply unit 7 is connected to the first massage mechanism 4A and the third massage mechanism 4C via an air tube P1, and supplies driving air to these first massage mechanism 4A and third massage mechanism 4C from outside the massage machine 1.

[0027] Furthermore, the location where the power supply unit 5, actuator unit 6, and air supply unit 7 are installed is not limited to inside the base unit 2. For example, the air supply unit 7 may be installed inside the seat unit 3A, or multiple air supply units 7 may be prepared, one of which may be used as an air pump dedicated to the first massage mechanism 4A and attached to the first massage mechanism 4A itself (for example, on the back side of the base frame 32, which will be described later).

[0028] In this embodiment, the direction corresponding to the user's forward-facing back (indicated by arrows X1 and X2 in Figures 1 and 2) when the user is seated in an appropriate posture relative to the massage machine 1 is the front-to-back direction of the massage machine 1, the direction corresponding to the user's left-to-right direction in the same posture (indicated by arrows Y1 and Y2 in Figure 1) is the left-to-right direction of the massage machine 1, and the direction corresponding to the user's up-and-down direction in the same posture is the up-and-down direction of the user. The direction corresponding to the direction (indicated by arrows Z1 and Z2 in Figures 1 and 2) will be described as the vertical direction of the massage machine 1.

[0029] The main body 3 is positioned opposite the designated area of ​​the user to be treated when the user is seated in the massage machine 1. More specifically, the seat 3A is provided on the upper part of the base 2, and the seat surface 8 of the seat 3A supports the user's buttocks and thighs from below. In other words, the seat 3A is positioned opposite the area of ​​the user to be treated, including the buttocks and thighs, when the user is seated in the massage machine 1.

[0030] The backrest 3B is positioned upright at the rear of the seat 3A, and its backrest surface 9 supports the user's back and waist from behind. In other words, the backrest 3B is positioned opposite the area being treated, including the user's back and waist, when the user is seated in the massage machine 1.

[0031] The backrest 3B is connected to an actuator device 6, and is configured to tilt backward to the seat 3A by the extension and retraction of the actuator device 6. In other words, the backrest 3B is connected to the base 2 so that it can tilt backward.

[0032] The footrest portion 3C is pivotably mounted on the front of the seat portion 3A, and when the footrest portion 3C is swung forward and upward, the surface that faces upward supports the lower legs of the user seated in the massage machine 1 from below. In other words, the footrest portion 3C can be positioned opposite the rear of the area being treated, including the user's lower legs.

[0033] The seat portion 3A has an opening (footrest storage portion) 3H at its front lower part into which the footrest portion 3C can be embedded. The footrest portion 3C is configured to be able to change angle arbitrarily between a state in which it is embedded in the footrest storage portion 3H (storage state) and a state in which it is pulled up forward from the footrest storage portion 3H (pulled-up state). Therefore, by raising the footrest portion 3C as described above, the user's lower leg can be supported from below in a state in front of the seat portion 3A.

[0034] The footrest section 3C has two recesses into which the user's left and right lower legs can be individually inserted. The third massage mechanism 4C is located inside the above recesses. In this embodiment, the third massage mechanism 4C applies pressure massage to the lower leg (treatment area) by inflating an airbag. Alternatively, the third massage mechanism 4C may be configured to apply pressure massage to the lower leg (treatment area) with a plate-shaped treatment element.

[0035] As shown in Figure 2, the first massage mechanism 4A is located inside the seat 3A. The first massage mechanism 4A is located inside the seat 8, which is the treatment surface S, and is movable in the front-rear direction. More specifically, the seat 3A has a first guide rail 11. The first guide rail 11 is located on the left inner side and the right inner side of the seat 3A. The first massage mechanism 4A is supported so as to be movable along the first guide rail 11. In other words, the first guide rail 11 supports the first massage mechanism 4A so as to be movable in the front-rear direction inside the seat 3A.

[0036] The first guide rail 11 has a rack 12 and a guide groove 13. The rack 12 has a plurality of teeth formed along the extending direction of the first guide rail 11. A pinion 48 provided on the first support shaft 41 of the first massage mechanism 4A meshes with the rack 12. The guide groove 13 is arranged parallel to the rack 12. The second support shaft 42 of the first massage mechanism 4A engages with the guide groove 13.

[0037] In this embodiment, the first guide rail 11 has a front-to-back movement guide portion 11A and a back-to-back movement guide portion 11B. The front-to-back movement guide portion 11A extends linearly from the front to the rear of the seat portion 3A. The front-to-back movement guide portion 11A is gently inclined downward and rearward. The back-to-back movement guide portion 11B extends in an arc shape downward and rearward from the rear end of the front-to-back movement guide portion 11A. The back-to-back movement guide portion 11B is gently concave downward. In other words, the first guide rail 11 extends linearly from the front to the rear inside the seat portion 3A, and further extends in a concave curve shape downward and rearward.

[0038] Therefore, in the first section supported by the front-to-back movement guide section 11A, the first massage mechanism 4A moves in the front-to-back direction along the seat surface 8, and in the second section supported by the up-to-down movement guide section 11B, it moves in a direction toward or away from the seat surface 8. The detailed configuration of the first massage mechanism 4A will be described later.

[0039] As shown in Figure 1, the second massage mechanism 4B is located inside the backrest 3B. The second massage mechanism 4B is located inside the backrest surface 9, which is the treatment surface S, and is movable in the vertical direction. More specifically, the backrest 3B has a second guide rail 14. The second guide rail 14 is located on the left inner side and the right inner side of the backrest 3B. Similar to the first guide rail 11, the second guide rail 14 has a rack and a guide groove, and these rack and guide groove support the second massage mechanism 4B so that it can move in the vertical direction.

[0040] In this embodiment, the second massage mechanism 4B has two treatment arms 15 arranged side by side, and massages the user's neck, shoulders, back, waist, etc. with the treatment elements attached to the tips of these left and right treatment arms 15. More specifically, the second massage mechanism 4B massages (kneads) the area to be treated, such as the user's neck, shoulders, back, waist, etc., by moving the treatment elements of the left and right treatment arms 15 against the area to be treated. Alternatively, the second massage mechanism 4B massages (grabs) the area to be treated, such as the user's neck, shoulders, back, waist, etc., by moving the left and right treatment arms 15 closer to and further apart from each other in the left and right directions along the area to be treated, such as the user's neck, shoulders, back, waist, etc. Alternatively, the second massage mechanism 4B massages (percussive massage) the area to be treated, such as the user's neck, shoulders, back, or waist, by moving the left and right treatment arms 15 to strike the area at short intervals.

[0041] Furthermore, the second massage mechanism 4B can employ a mechanism capable of performing one or more types of massage from kneading, gripping, and tapping, as long as it can appropriately massage the user's neck and lower back.

[0042] Furthermore, the second massage mechanism 4B may have a mechanism similar to that of the first massage mechanism 4A. In this case, the second massage mechanism 4B is positioned so that the treatment arm 15 (corresponding to the treatment arm 22 of the first massage mechanism 4A) faces the inside of the backrest surface 9, which is the treatment surface S.

[0043] Furthermore, the first guide rail 11 and the second guide rail 14 may be connected, in which case the first massage mechanism 4A will move from the seat 3A to the backrest 3B via the connected guide rails. When the first massage mechanism 4A exists within the backrest 3B as the second massage mechanism 4B, the structure of the second massage mechanism 4B can be understood equally by reinterpreting the "up and down direction" in the seat 8 as the "front and back direction" in the backrest 3B, and the "front and back direction" in the seat 8 as the "up and down direction" in the backrest 3B.

[0044] Similarly, the first guide rail 11 is extended and installed inside the footrest section 3C. Alternatively, the first massage mechanism 4A may be configured to move from the seat portion 3A to the footrest portion 3C by an extended first guide rail 11. When the first massage mechanism 4A is located within the footrest portion 3C, the structure of the first massage mechanism 4A can be understood equally by reinterpreting the "up and down direction" in the seat 8 as the "front and back direction" in the footrest portion 3C, and the "front and back direction" in the seat 8 as the "up and down direction" in the footrest portion 3C.

[0045] As shown in Figures 3 to 5, the first massage mechanism 4A includes an outer frame 20, a drive mechanism 21, a treatment arm 22, a movable frame 23, a link frame 24, a movable auxiliary member 25, and a position change mechanism 26. In this embodiment, the first massage mechanism 4A has two treatment arms 22 arranged on the left and right, and these two treatment arms 22 on the left and right massage the user's buttocks, thighs, etc.

[0046] As shown in Figure 2, the first massage mechanism 4A of this embodiment is located within the seat portion 3A, supported by the front-to-back movement guide portion 11A of the first guide rail 11, with the treatment arm 22 facing the inside of the seat surface 8, which is the treatment surface S.

[0047] The outer frame 20 has two side frames 31 on the left and right, and a base frame 32. The side frames 31 are formed in a substantially flat shape. The left and right side frames 31 are spaced apart and face each other in the left-right direction (see Figure 4).

[0048] The base frame 32 has a lower frame 33 and a lower plate 34. The lower frame 33 is a pipe with a rectangular cross-section, and two of them are provided side by side with a gap between them in the front-to-back direction. The lower frame 33 extends between the lower edges of the left and right side frames 31 and connects the side frames 31 to each other. The lower plate 34 is a rectangular plate that is long in the left-to-right direction and extends along the top of the lower frame 33. The lower plate 34 is fixed to the top of the two lower frames 33.

[0049] As shown in Figure 5, the drive mechanism 21 includes a casing 40, a first support shaft 41, a second support shaft 42, a first drive motor 43, a second drive motor 44, a first power transmission mechanism 45, a second power transmission mechanism 46, and a cam 47.

[0050] The first drive motor 43, the second drive motor 44, the first power transmission mechanism 45, and the second power transmission mechanism 46 are all housed together inside the casing 40. The casing 40 is positioned between the upper edges of the left and right side frames 31. The base frame 32 connects the left and right side frames 31 at a position below the casing 40.

[0051] The first support shaft 41 is located at the rear of the casing 40. The first support shaft 41 extends laterally from the rear of the casing 40. The left and right ends of the first support shaft 41 are inserted through the upper rear of the left and right side frames 31, and protrude outward from the outer surface of the side frames 31. Pinions 48 are provided at the left and right ends of the first support shaft 41. The pinions 48 mesh with the rack 12 of the first guide rail 11. In other words, the first support shaft 41 is supported while meshed with the rack 12 of the first guide rail 11.

[0052] The second support shaft 42 is located at the front of the casing 40. The second support shaft 42 extends in the left-right direction at the front of the casing 40. The left and right ends of the second support shaft 42 are inserted through the front upper parts of the left and right side frames 31, and are provided so as to protrude outward from the outer surface of the side frames 31. The left and right ends of the second support shaft 42 engage with the guide grooves 13 of the first guide rail 11. In other words, the second support shaft 42 is supported in a state where it is engaged with the guide grooves 13 of the first guide rail 11.

[0053] The first drive motor 43 is driven by power supplied from the power supply unit 5 and generates rotational driving force. The rotating shaft of the first drive motor 43 is connected to the first support shaft 41 via the first power transmission mechanism 45. The first power transmission mechanism 45 transmits the rotational driving force of the first drive motor 43 to the first support shaft 41. As a result, the pinion 48 at the end of the first support shaft 41 rotates, moving the first massage mechanism 4A along the first guide rail 11. In other words, the first drive motor 43 is a drive device that drives the first massage mechanism 4A.

[0054] The drive mechanism 21 is configured to allow the rotation direction of the rotation shaft of the first drive motor 43 to be arbitrarily switched between forward and reverse directions. In this way, the drive mechanism 21 can change the direction of movement of the first massage mechanism 4A by switching the rotation direction of the first drive motor 43. This makes it possible to adjust the treatment position of the user by the first massage mechanism 4A forward and backward.

[0055] The second drive motor 44 is driven by power supplied from the power supply unit 5 and generates rotational driving force. The rotating shaft of the second drive motor 44 is connected to the second support shaft 42 via the second power transmission mechanism 46. The second power transmission mechanism 46 transmits the rotational driving force of the second drive motor 44 to the second support shaft 42. As a result, the cam 47 connected to the second support shaft 42 rotates, driving the treatment arm 22. In other words, the second drive motor 44 is a drive device that drives the treatment arm 22.

[0056] The drive mechanism 21 is configured to allow the rotation direction of the second drive motor 44's rotation axis to be arbitrarily switched between forward and reverse directions. In this way, the drive mechanism 21 can change the rotation direction of the cam 47, and thus the driving direction of the treatment arm 22, by switching the rotation direction of the second drive motor 44. This makes it possible to perform massage on the area being treated in different patterns.

[0057] The cam 47 is a circular plate cam and is pivotally supported on the outer frame 20. More specifically, the cam 47 is positioned between the casing 40 and the side frame 31 and is connected to and supported by the second support shaft 42 at a position radially eccentric to the center of the outer circumference. Therefore, when the second support shaft 42 rotates, the cam 47 rotates eccentrically around the second support shaft 42. As a result, the treatment arm 22 moves in a circular motion in accordance with the eccentric trajectory of the outer circumference of the cam 47. Consequently, the first treatment element 51 and the second treatment element 52 reciprocate in the vertical and longitudinal directions.

[0058] In this embodiment, the left and right cams 47 are connected and supported by a common second support shaft 42. Therefore, when the second support shaft 42 is rotated, the left and right cams 47 rotate together in accordance with it. Also, the eccentricity direction (lift direction) of the cams 47 is set to be the same on both the left and right sides. Therefore, the left and right treatment arms 22 always reciprocate in the same direction by rotating the cams 47.

[0059] Furthermore, the eccentricity direction of the cam 47 may be set to different angles (for example, 180 degrees) on the left and right sides when viewed from the axial direction of the second support shaft 42. Alternatively, the cam 47 may be configured to rotate independently on the left and right sides. In this way, the timing of the reciprocating movement of the treatment arm 22 can be made different on the left and right sides.

[0060] As shown in Figures 3 to 8, the treatment arm 22 has a first treatment element 51, a second treatment element 52, and an arm portion 53. The first treatment element 51 and the second treatment element 52 are a pair of thick left and right circular discs, and are attached to the tip of the arm portion 53 so that their axes face left and right. That is, the first treatment element 51 and the second treatment element 52 are provided on the arm portion 53 at a distance from each other in the front-to-back direction. The first treatment element 51 is located towards the front of the first massage mechanism 4A. The second treatment element 52 is positioned behind the first treatment element 51. In other words, the first treatment element 51 is positioned in front of the seat portion 3A than the second treatment element 52. The massage mechanism 4A applies pressure massage to the area to be treated, such as the user's buttocks or thighs, by pressing either or both of the first treatment element 51 and the second treatment element 52 against the area to be treated.

[0061] Furthermore, the treatment arm 22 may not include the second treatment element 52 and may be configured to apply pressure and massage to the area being treated using only the first treatment element 51. Also, the shape of the first treatment element 51 and the second treatment element 52 is not limited to a disc shape, as long as they can properly apply pressure and massage to the area being treated. For example, the first treatment element 51 and the second treatment element 52 may be formed in a spherical shape or a bullet shape. Alternatively, the first treatment element 51 and the second treatment element 52 may be formed in a plate shape or a spherical shape with multiple indentations. In addition, multiple first treatment elements 51 and / or second treatment elements 52 may be arranged in the left-right direction, or only one may be provided.

[0062] In the above explanation, the configuration is described in which the first treatment element 51 is located on the front side and the second treatment element 52 is located on the rear side. However, the configuration may also be such that the second treatment element 52 is located on the front side and the first treatment element 51 is located on the rear side. In this case, when the second airbag 69 inflates, the first treatment element 51 located on the rear side protrudes from the seat surface 8, and when the first airbag 68 inflates, the first treatment element 51 located on the rear side retracts into the seat surface 8 (the second treatment element 52 on the front side lifts up).

[0063] The arm portion 53 is a plate-like member formed in a V-shape or boomerang shape, and is pivotally supported on the outer frame 20 at an intermediate point between its front and rear ends 54 and 55. More specifically, the arm portion 53 is positioned between the casing 40 and the side frame 31 and is connected and supported by the cam 47 at the aforementioned intermediate point.

[0064] The arm portions 53 are provided on the left and right sides of the casing 40, with the casing 40 in between. In other words, the first massage mechanism 4A has two treatment arms 22 that are spaced apart in the left-right direction, and these two treatment arms 22 massage the area to be treated.

[0065] As shown in Figures 6 to 8, the arm portion 53 has a first end portion 54, a second end portion 55, and a cam receiving hole 56. The first end portion 54 and the second end portion 55 of the arm portion 53 extend in different directions toward the radially outward direction of the cam receiving hole 56. When the treatment arm 22 is in the first state described later, the first end portion 54 of the arm portion 53 extends forward and upward of the treatment arm 22. On the other hand, the second end portion 55 of the arm portion 53 extends rearward and upward of the treatment arm 22.

[0066] The first treatment element 51 is provided at the first end 54 of the arm portion 53. The second treatment element 52 is provided at the second end 55 of the arm portion 53. Thus, the arm portion 53 is provided with the first treatment element 51 and the second treatment element 52 at both the front and rear ends 54 and 55, respectively.

[0067] The cam receiving hole 56 is a circular hole identical in shape to the outer circumference of the cam 47 and is located midway between the first end 54 and the second end 55 of the arm portion 53. The cam 47 is fitted into the cam receiving hole 56 and rotates inside the cam receiving hole 56. As a result, the arm portion 53 moves in a circular motion in accordance with the eccentric trajectory of the outer circumference of the cam 47, causing the first treatment element 51 and the second treatment element 52 to reciprocate in the vertical and longitudinal directions inside the seating surface 8. In this way, the cam 47 rotates to reciprocate the arm portion 53 at least in the vertical direction, massaging the area to be treated.

[0068] The movable frame 23 is a plate-shaped member that is pivotably supported with respect to the first support shaft 41, and includes a support plate 61 and a connecting arm 62. The support plate 61 is positioned in the space defined between the casing 40 and the base frame 32. The support plate 61 has flat surfaces (upper surface 63, lower surface 64) on its upper and lower sides, and is provided between the casing 40 and the base frame 32 with the upper surface 63 of the support plate 61 (movable frame 23) facing the lower surface of the casing 40, and the lower surface 64 of the support plate 61 (movable frame 23) facing the upper surface of the lower plate 34 of the base frame 32. The upper surface 63 and lower surface 64 of the movable frame 23 can also be considered as the front surface 63 and back surface 64 of the movable frame 23 (more specifically, the support plate 61).

[0069] Two connecting arms 62 are provided on the rear of the support plate 61, spaced apart on the left and right. The connecting arms 62 extend upward and rearward from the rear of the left and right side edges of the support plate 61. The support ends 65 of the connecting arms 62 are connected to the first support shaft 41 between the casing 40 and the side frame 31. In other words, the movable frame 23 is pivotally supported to the outer frame 20 at the support ends 65 of the connecting arms 62.

[0070] As a result, the movable frame 23 swings vertically between a lower position (see Figure 6) where the lower surface 64 of the support plate 61 is close to and facing the upper surface of the lower plate 34, and an upper position (see Figure 8) where the upper surface 63 of the support plate 61 is close to and facing the lower surface of the casing 40. Figure 7 shows the state in which the movable frame 23 has swung to an intermediate position between the lower and upper positions.

[0071] As shown in Figures 3, 4, and 6-8, the link frame 24 is a plate-shaped member formed in a V-shape, and pivotally connects the movable frame 23 and the arm portion 53 of the treatment arm 22. More specifically, the link frame 24 extends vertically between the tip portion 66 of the movable frame 23 and the first end portion 54 (the end portion on the first treatment element 51 side) of the arm portion 53. The upper end of the link frame 24 is pivotally connected to the first end portion 54 of the arm portion 53, and the lower end of the link frame 24 is pivotally connected to the tip portion 66 of the movable frame 23.

[0072] Therefore, when the movable frame 23 is swung to a downward position, the link frame 24 pulls down the first end 54 of the arm portion 53 accordingly, rotating the arm portion 53 forward by a predetermined angle around the cam 47. As a result, the first treatment element 51 moves downward and the second treatment element 52 rises up, protruding upward, resulting in a first state. In other words, in the first state, the treatment arm 22 has both the first treatment element 51 and the second treatment element 52 aligned approximately parallel to the inside of the seat surface 8 (see Figure 6).

[0073] Furthermore, when the movable frame 23 is swung to the upper position, the link frame 24 pushes up the first end 54 of the arm portion 53 accordingly, rotating the arm portion 53 backward by a predetermined angle (for example, 47 degrees) around the cam 47. As a result, the treatment arm 22 is positioned in a second state in which the first treatment element 51 protrudes above the second treatment element 52 (towards the seat surface 8 in the vertical direction) (see Figure 8).

[0074] More specifically, when the treatment arm 22 is in the first state, the line passing through the centers of both the first treatment element 51 and the second treatment element 52 is defined as the reference line L1. When the movable frame 23 is swung from the lower position to the upper position, the first treatment element 51 moves above the reference line L1. Conversely, the second treatment element 52 moves below the reference line L1.

[0075] The movable assist member 25 is a member that biases the movable frame 23 to rotate toward the lower position. As shown in Figure 5, the movable assist member 25 in this embodiment is a torsion spring, provided between the support end 65 of the connecting arm 62 and the casing 40, and applies an elastic force to the movable frame 23 in a direction that causes it to rotate downward. Therefore, when the massage machine 1 is not in use and is in a stopped state, the movable frame 23 is held in the lower position. In other words, the treatment arm 22 is held in the first state by the movable assist member 25 (see Figure 6).

[0076] As shown in Figures 6 to 8, the repositioning mechanism 26 has an airbag 67. The airbag 67 is connected to an air supply device 7 via an air tube P1 (see Figure 2) and inflates with air supplied from the air supply device 7. In this embodiment, the repositioning mechanism 26 has two airbags 67. The airbags 67 are provided on the upper surface 63 and lower surface 64 of the support plate 61. The airbags 67 include a first airbag 68 and a second airbag 69.

[0077] The first airbag 68 is provided on the upper surface 63 of the support plate 61. The second airbag 69 is provided on the lower surface 64 of the support plate 61. In other words, the first airbag 68 is provided between the upper surface 63 of the support plate 61 and the lower surface of the casing 40, and the second airbag 69 is provided between the lower surface 64 of the support plate 61 and the upper surface of the lower plate 34.

[0078] Therefore, when the movable frame 23 is in the lower position (see Figure 6), supplying air from the air supply device 7 to the second airbag 69 and inflating the second airbag 69 causes the movable frame 23 to be pushed upward by the air pressure, separating it from the base frame 32 (lower plate 34), and swinging through the intermediate position (see Figure 7) to the upper position (see Figure 8). As a result, the treatment arm 22 is held in a second state in which the first treatment element 51 is positioned to protrude above the second treatment element 52. In other words, in the second state, the first treatment element 51 is raised upward and the second treatment element 52 is moved downward.

[0079] Furthermore, when the movable frame 23 is swung upward as described above, if the first airbag 68 is inflated, the air is released from the first airbag 68 to deflate it, and the second airbag 69 is inflated (see Figure 7).

[0080] On the other hand, when the movable frame 23 is in the upper position (see Figure 8), supplying air from the air supply device 7 to the first airbag 68 and inflating the first airbag 68 causes the movable frame 23 to be pushed down by the air pressure so as to move away from the casing 40, and to swing through the intermediate position (see Figure 7) to the lower position (see Figure 6). As a result, the treatment arm 22 is held in a first state in which both the first treatment element 51 and the second treatment element 52 are aligned approximately parallel to the inside of the seat surface 8.

[0081] Furthermore, when the movable frame 23 is swung downward as described above, if the second airbag 69 is inflated, the air is released from the second airbag 69 to deflate it, and the first airbag 68 is inflated.

[0082] In this way, the airbag 67 uses the pressure of the air supplied from the air supply device 7 to swing the movable frame 23 up and down around the pivot end 65 of the connecting arm 62, thereby changing the vertical positional relationship (therapist position) of the first therapist 51 and the second therapist 52. This makes it possible to perform massage on the area being treated with different pressing forces.

[0083] Furthermore, when the massage machine 1 is not in use and is in a stopped state, both the first airbag 68 and the second airbag 69 are deflated and contracted. Therefore, in this state, although the movable frame 23 is held in the lower position by its own weight and the elastic force of the movable auxiliary member 25, it can also swing freely upward against its own weight and elastic force. In other words, the treatment arm 22 rotates freely within a predetermined angular range around the cam 47 to match the contact state with the area being treated.

[0084] As shown in Figure 9, the massage machine 1 is equipped with a control device 70. The control device 70 is The unit comprises a main control unit C1 and a massage control unit C2. The main control unit C1 includes a backrest drive control unit 71, a backrest angle detection unit 72, and a footrest drive control unit 73. The massage control unit C2 includes a first massage control unit 74, a second massage control unit 75, and a third massage control unit 76.

[0085] The backrest drive control unit 71 controls the tilting motion of the backrest 3B. The backrest angle detection unit 72 detects whether the backrest 3B has tilted beyond a predetermined angle based on the drive information of the backrest 3B. The footrest drive control unit 73 controls the angle change motion of the footrest 3C.

[0086] The first massage control unit 74 controls the massage operation of the first massage mechanism 4A in the seat 3A. The second massage control unit 75 controls the massage operation of the second massage mechanism 4B in the backrest 3B. The third massage control unit 76 controls the massage operation of the third massage mechanism 4C in the footrest 3C.

[0087] In this embodiment, the first massage control unit 74 has a therapist position switching function that changes the rotational position of the treatment arm 22 (the therapist positions of the first therapist 51 and the second therapist 52) ​​based on the detection information of the backrest angle detection unit 72.

[0088] More specifically, for example, when the angle of the backrest 3B is changed using the control unit, and the backrest angle detection unit 72 detects that the backrest 3B has tilted backward by a predetermined angle (for example, 30 degrees from the maximum upright position) or more, the first massage control unit 74 inflates the second airbag 69 and swings the movable frame 23 to an upward position. As a result, the first end 54 of the arm portion 53 of the treatment arm 22 is pushed up by the link frame 24, changing the position so that the first treatment element 51 protrudes further towards the seat surface 8 than the second treatment element 52. Therefore, if the cam 47 is rotated in this state to move the treatment arm 22 up and down, the buttocks, thighs, etc. will be strongly pressed by the first treatment element 51.

[0089] Furthermore, the degree of tilt of the backrest 3B may be detected by a position sensor that detects the rotational position of a support shaft provided at the support end of the backrest 3B. In addition, the above-mentioned therapy arm position adjustment function may control the angle of the therapy arm 22 in accordance with the angle change operation of the backrest 3B by the operating unit, instead of the degree of tilt of the backrest 3B, or it may control the angle of the therapy arm 22 in accordance with the load applied to the seat 3A.

[0090] In the above load-linked control case, the load applied to the seat 3A may be detected by pressure sensors provided on the seat surface 8 or the massage elements 51, 52. Alternatively, the load may be detected based on the torque current or rotational speed of the second drive motor 44, or based on the torque current or rotational speed of the drive motor that tilts the backrest 3B. Furthermore, the massage element position adjustment function may be switched on or off according to the operation of the control unit, the position of the first massage mechanism 4A on the first guide rail 11, the operating state of the first massage mechanism 4A, etc.

[0091] <Variation> In the above embodiment, the first massage mechanism 4A is configured such that when the backrest 3B is tilted backward, the first massage element (first massage element) 51 positioned on the front side of the seat 3A protrudes vertically toward the seat surface 8 than the other massage element (second massage element) 52. However, if it is possible to apply an appropriate pressing force to the part being treated, the first massage mechanism 4A may be supported in a direction reversed front to back with respect to the first guide rail 11, and configured such that the first massage element (first massage element) 51 positioned on the rear side of the seat 3A protrudes vertically toward the seat surface 8 than the other massage element (second massage element) 52.

[0092] In the above embodiment, the repositioning mechanism 26 is configured to swing the movable frame 23 up and down using two airbags 67 (first airbag 68, second airbag 69), but the repositioning mechanism 26 may have only one airbag 67.

[0093] More specifically, for example, the position change mechanism 26 has an airbag 67 (second airbag 69) only on the back side of the movable frame 23, and inflates the airbag 67 when the movable frame 23 is in the lower position. As a result, the movable frame 23 swings upward and rotates the arm portion 53 backward. Consequently, the treatment arm 22 is held in a second state in which the first treatment element 51 protrudes above the second treatment element 52.

[0094] Furthermore, if the air is released from the airbag 67 in this state, the movable frame 23 will swing downward due to its own weight and the elastic force of the movable auxiliary member 25, causing the arm portion 53 to rotate forward. As a result, the treatment arm 22 is held in a first state in which the first treatment element 51 and the second treatment element 52 are aligned substantially parallel to the inside of the seat surface 8. This provides the same effects as in the above embodiment.

[0095] In the above embodiment, the movable frame 23 is configured to swing using an airbag 67, but the movable frame 23 may be configured to swing using an actuator or an electric motor instead of the airbag 67.

[0096] In the above embodiment, the two left and right treatment arms 22 are configured to move together by a single position-changing mechanism 26 to change the vertical positional relationship of each first treatment element 51 and second treatment element 52. However, the first massage mechanism 4A may be provided with two independent position-changing mechanisms 26, and the left and right treatment arms 22 may be configured to be operable individually by these position-changing mechanisms 26.

[0097] More specifically, the first massage mechanism 4A includes, for example, two movable frames 23 that can swing independently to the left and right, two left and right link frames 24 that connect the movable frames 23 to the arm portion 53 of the treatment arm 22, and four airbags 67 in total, two on the front and two on the back, provided on the support plate 61 of each movable frame 23. In this configuration, the left and right treatment arms 22 can individually change the vertical positional relationship of the first treatment element 51 and the second treatment element 52 by inflating the corresponding airbags 67, making it possible to perform massage on the area being treated in a wider variety of patterns.

[0098] In the above embodiment, the movable frame 23 is pivotally supported by a first support shaft 41 that penetrates the rear of the casing 40 (that is, the pivot shaft of the movable frame 23 and the rotation shaft of the pinion 48 are shared). However, the movable frame 23 may also be pivotally supported by a support shaft provided separately from the first support shaft 41 at the rear of the casing 40. This configuration also provides the same effects as the above embodiment.

[0099] Thus, the massage machine 1 of this embodiment comprises a main body 3 positioned facing a predetermined part of the user to be treated, and a massage mechanism 4 provided on the inside of the treatment surface S of the main body 3 facing the part to be treated, which presses and massages the part to be treated, wherein the direction in which the part to be treated and the treatment surface S face each other is the first direction, the left-right direction of the part to be treated is the second direction, and the directions perpendicular to the first and second directions are the third direction, and the massage mechanism 4 is the third The device comprises a first treatment element 51 and a second treatment element 52 arranged at a predetermined interval in the direction, and a position changing mechanism 26 for changing the position of the first treatment element 51 and the second treatment element 52 in the first direction. The position changing mechanism 26 changes the position of the treatment elements between a first state in which the first treatment element 51 and the second treatment element 52 are aligned along the inside of the treatment surface S, and a second state in which the first treatment element 51 is positioned to protrude further toward the treatment surface S in the first direction than the second treatment element 52.

[0100] With this massage machine 1, if the first treatment element 51 and the second treatment element 52 are arranged in the first state, the area to be treated can be massaged by pressing with the two treatment elements 51 and 52. Furthermore, if the first treatment element 51 and the second treatment element 52 are arranged in the second state, the area to be treated can be massaged by pressing with the first treatment element 51, which protrudes further toward the treatment surface S than the second treatment element 52. Therefore, even if, for example, the backrest 3B is tilted backward and the user's posture changes, it is possible to apply appropriate pressure to the area to be treated. This makes it possible to realize a massage machine 1 with excellent massage performance.

[0101] The massage mechanism 4 comprises an outer frame 20, an arm portion 53 having the first treatment element 51 and the second treatment element 52 at both ends 54, 55 and pivotally supported on the outer frame 20 at an intermediate point between the ends 54, 55, a cam 47 pivotally supported on the outer frame 20 and rotating to reciprocate the arm portion 53 in at least the first direction, a movable frame 23 pivotally supported on the outer frame 20 at its support end 65, and a link frame 24 extending between the tip 66 of the movable frame 23 and the end 54 of the arm portion 53 on the first treatment element 51 side, pivotally connecting the movable frame 23 and the arm portion 53. The position changing mechanism 26 changes the position of the treatment elements by swinging the movable frame 23 around its support end 65.

[0102] Alternatively, the pivot structure between the link frame 24 and the tip 66 of the movable frame 23 may be connected using a ball joint structure instead of a pin structure, and the cam 47, which is connected and supported by the second support shaft 42, may be mounted at an angle to the second support shaft 42. With this structure, the treatment arm 22 will oscillate in accordance with the eccentric trajectory of the outer circumference of the inclined cam 47. As a result, the first treatment element 51 and the second treatment element 52 will oscillate in the left-right direction while reciprocating in the front-back and up-down directions (enabling kneading massage by the first treatment element 51 and the second treatment element 52).

[0103] According to this massage machine 1, when the movable frame 23 is swung around its pivot end 65, the link frame 24 moves the end 54 of the arm portion 53 on the first treatment element 51 side in a predetermined direction, positioning the first treatment element 51 and the second treatment element 52 in the first or second state. Therefore, even during use, the relative positions of the first treatment element 51 and the second treatment element 52 can be smoothly changed to match the user's posture, and an appropriate pressure can be applied to the area being treated. This further improves the massage performance.

[0104] The massage machine 1 is equipped with an air supply device 7 that supplies air to the massage mechanism 4, and the position changing mechanism 26 has an airbag 67 that swings the movable frame 23 by the pressure of the air supplied from the air supply device 7.

[0105] According to this massage machine 1, the movable frame 23 is made to oscillate by the airbag 67, so that the load applied from the area being treated to the treatment arm 22 during use can be absorbed by the elasticity of the airbag 67, making it possible to provide the user with a better massage sensation. As a result, the massage performance is further improved.

[0106] The outer frame 20 has a base frame 32 positioned facing the movable frame 23, and the airbag 67 is provided between the movable frame 23 and the base frame 32, and the air pressure causes the movable frame 23 to swing in the first direction so as to move away from the base frame 32.

[0107] According to this massage machine 1, it is operated by the inflation pressure (air pressure) of the airbag 67. Since the frame 23 can be swung away from the base frame 32, it is possible to stably change the relative positions of the first treatment element 51 and the second treatment element 52 even during use, and to apply appropriate pressure to the area being treated. This further improves the massage performance.

[0108] The massage mechanism 4 comprises a drive unit 44 for driving the massage mechanism 4 and a casing 40 for housing the drive unit 44. The airbag 67 is provided between the movable frame 23 and the casing 40, and the air pressure causes the movable frame 23 to swing in the first direction so as to move away from the casing 40.

[0109] With this massage machine 1, the inflation pressure (air pressure) of the airbag 67 can cause the movable frame 23 to swing away from the casing 40, making it possible to stably change the relative positions of the first treatment element 51 and the second treatment element 52 even during use, and to apply appropriate pressure to the area being treated. This further improves the massage performance.

[0110] The movable frame 23 has an upper surface portion 63 and a lower surface portion 64 facing the first direction, and the airbag 67 is provided on the upper surface portion 63 and the lower surface portion 64.

[0111] With this massage machine 1, the movable frame 23 can be oscillated by pressing the upper surface 63 and lower surface 64 of the movable frame 23 with the inflation pressure of the airbag 67, making it possible to change the relative positions of the first treatment element 51 and the second treatment element 52 more stably. Therefore, the massage performance is further improved.

[0112] Of particular note is that, in this embodiment of the massage machine 1, the arm portion 53 has a first treatment element 51 and a second treatment element 52 at both ends, and is configured to be pivotally supported on the outer frame 20 at an intermediate point of the arm portion 53 via an eccentric cam 47 that reciprocates the arm portion 53 at least in the vertical direction. In addition, it has a movable frame 23 pivotally supported on the outer frame 20 at its support end, and a link frame 24 that pivotally connects the tip of the movable frame 23 to the front side of the arm portion 53. Furthermore, it has a first airbag 68 provided on the upper surface of the movable frame (between the movable frame 23 and the casing 40) and a second airbag 69 provided on the lower surface (between the movable frame 23 and the base frame 32).

[0113] With this structure, when the second airbag 69 (the lower airbag 67) inflates, the movable frame 23 is pushed up relative to the base frame 32. As a result, the first treatment element 51, which protrudes upward due to the eccentricity of the cam 47, can be further lifted upward via the link frame 24 by the rising of the movable frame 23 (second state). In other words, the eccentricity of the cam 47 and the second airbag 69 lift the first treatment element 51 in a double-layered manner.

[0114] On the other hand, when the first airbag 68 (upper airbag 67) inflates, the movable frame 23 is pushed down relative to the casing 40, and the first treatment element 51, which protrudes upward due to the eccentricity of the cam 47, is pulled downward in the opposite direction via the link frame 24 (first state).

[0115] The eccentricity of these airbags 68, 69 and cam 47 allows for fine adjustment of the protrusion of the first treatment element 51, and also allows for fine adjustment of the positional relationship between the first treatment element 51 and the second treatment element 52, making it possible to set the degree of pressure applied to the treatment area to best suit the user's sensation. In other words, there are two airbags 67 (first airbag 68, second airbag 6 9) Although present, the direction of movement of the first treatment element 51 due to the inflation of the first airbag 68 and the direction of movement of the first treatment element 51 due to the inflation of the second airbag 69 are not the same, but are in opposite directions.

[0116] Furthermore, if the first airbag 68 and the second airbag 69 are not filled with air and are in an uninflated state, when the user sits on the seat 8, the first therapy element 51 and the second therapy element 52 receive force from the user, causing the movable frame 23 to move automatically and the arm section 53 to tilt to conform to the user's body, so that the first therapy element 51 and the second therapy element 52 come into contact with the user according to the contours of the user's body (free state).

[0117] When the second airbag 69 inflates from this free state, the movable frame 23 is pushed up relative to the base frame 32. As a result of the movable frame 23 rising, the first treatment element 51 is lifted upward via the link frame 24 and hits the user more forcefully. Conversely, when the first airbag 68 inflates from this free state, the movable frame 23 is pushed down relative to the casing 40. This causes the first treatment element 51 to be pulled downward via the link frame 24, while the second treatment element 52 rises upward and hits the user more forcefully.

[0118] The main body 3 includes a seat portion 3A positioned opposite the user's buttocks, which are the part to be treated, and the massage mechanism 4 is provided on the inside of the seat surface 8 of the seat portion 3A, which is the treatment surface S.

[0119] With this massage machine 1, even if the user's center of gravity shifts and the load applied in the direction normal to the seat surface 8 decreases, the first and second treatment elements 51 and 52 provided on the inside of the seat surface 8 can appropriately apply pressure to the area being treated, including the user's buttocks, thus further improving the massage performance.

[0120] The main body 3 includes a backrest 3B that is positioned upright at the rear of the seat 3A, and the first treatment element 51 is positioned in front of the seat 3A than the second treatment element 52.

[0121] According to this massage machine 1, even if the user's center of gravity shifts to the rear of the seat 3A, by arranging the first treatment element 51 and the second treatment element 52 in the second state, the first treatment element 51, which is positioned in front of the seat 3A more than the second treatment element 52, can appropriately apply pressure to the area to be treated, including the user's buttocks, thus further improving the massage performance.

[0122] The backrest portion 3B is configured to be tiltable backward toward the seat portion 3A, and the massage mechanism 4 changes the position of the treatment element to the second state as the backrest portion 3B is tilted backward.

[0123] With this massage machine 1, the first treatment element 51 and the second treatment element 52 can be positioned in a second state in conjunction with the backward tilting motion of the backrest 3B, making it possible to apply appropriate pressure to the area being treated in accordance with changes in the user's posture. This further improves the massage performance.

[0124] Having described the present invention above, the embodiments disclosed herein should be considered in all respects to be illustrative and not restrictive. The scope of the present invention is indicated by the claims rather than the foregoing description, and all modifications within the meaning and scope equivalent to the claims are intended to be included.

[0125] For example, as a variation of the above embodiment, as shown in Figures 1 and 2, a pair of left and right components are provided. An airbag 81 may be placed on the inner surface of the armrest 80 (arm rest), and the user's waist may be clamped with the airbag 81 inflated, and then the first treatment element 51 and the second treatment element 52 may be operated. In this way, the user's body can be stabilized and treatment (especially the second state) can be performed by the first treatment element 51 and the second treatment element 52. Specifically, by inflating the second airbag 69, the first treatment element 51 can be made to protrude, or by inflating the first airbag 68, the first treatment element 51 can be retracted, thereby providing an effective massage.

[0126] Similarly, by keeping the treatment arm 15 of the second massage mechanism 4B built into the backrest 3B pressed against the user's shoulder or waist, and inflating the second airbag 69 in the seat 3A, the first treatment element 51 can be extended, or by inflating the first airbag 68, the first treatment element 51 can be retracted, thereby providing an effective massage. [Explanation of symbols]

[0127] 1 Massage machine 2 Base section 3. Main body 3A Seat part 3B Backrest 4 Massage mechanism 4A First Massage Mechanism 4B Second Massage Mechanism 7. Air supply device 8 seats 9 Backrest 20 Outer frame 23 Movable Frames 24 Link Frames 26 Position change mechanism 32 Base Frame 40 Casing 44 Drive unit 47 Cam 51 1st treatment child 52 Second treatment child 53 Arm section 63 Top surface of the movable frame 64 Lower part of the movable frame 65. Support end of movable frame 67 Airbags S Treatment surface

Claims

1. The main body is positioned opposite the designated area to be treated on the user, A massage machine comprising a massage mechanism provided on the inside of the treatment surface of the main body facing the part to be treated, which presses and massages the part to be treated, The massage mechanism described above is A first treatment device that applies massage to the area to be treated, The device has a position changing mechanism for changing the vertical position of the first treatment element, The aforementioned position changing mechanism is A massage machine that changes the position of the first treatment element between a first state in which the first treatment element is lowered and a second state in which the first treatment element is raised.

2. The massage mechanism has a first treatment element and a second treatment element that apply massage to the area to be treated. The first treatment element and the second treatment element are arranged at a predetermined distance from each other in the front-to-back direction. The first treatment element and the second treatment element have a position changing mechanism for changing their vertical positions, The aforementioned position changing mechanism is The massage machine according to claim 1, wherein the position of the treatment element is changed between a first state in which the second treatment element is raised upward and a second state in which the first treatment element is raised upward.

3. The massage mechanism described above is Outer frame and An arm portion is provided with the first treatment element at one end and pivotally supported by the outer frame at the other end, An eccentric cam, pivotally supported on the outer frame, rotates to reciprocate the arm portion at least in the vertical direction, A movable frame pivotally supported to the outer frame at its end, The movable frame has a link frame that extends between the tip of the movable frame and the end of the arm portion on the first treatment element side, and pivotally connects the movable frame and the arm portion to each other. The aforementioned position changing mechanism is The massage machine according to claim 1, wherein the position of the treatment element is changed by swinging the movable frame around the support end of the movable frame.

4. The massage mechanism described above is Outer frame and An arm portion is provided with the first treatment element and the second treatment element at both ends, and is pivotally supported by the outer frame at the midpoint between the two ends, An eccentric cam, pivotally supported on the outer frame, rotates to reciprocate the arm portion at least in the vertical direction, A movable frame pivotally supported to the outer frame at its end, The movable frame has a link frame that extends between the tip of the movable frame and the end of the arm portion on the first treatment element side, and pivotally connects the movable frame and the arm portion to each other. The aforementioned position changing mechanism is The massage machine according to claim 2, wherein the position of the treatment element is changed by swinging the movable frame around the support end of the movable frame.

5. The massage mechanism is equipped with an air supply device that supplies air, The aforementioned position changing mechanism is The massage machine according to claim 3 or 4, further comprising an airbag that causes the movable frame to oscillate by the pressure of the air supplied from the air supply device.

6. The aforementioned outer frame is It has a base frame positioned facing the aforementioned movable frame, The massage machine according to claim 5, wherein the airbag is provided between the movable frame and the base frame, and the air pressure causes the movable frame to swing vertically so as to separate it from the base frame.

7. The massage mechanism described above is A drive unit that drives the massage mechanism, It comprises a casing that houses the aforementioned drive device, The massage machine according to claim 5, wherein the airbag is provided between the movable frame and the casing, and the air pressure causes the movable frame to swing vertically so as to separate it from the casing.

8. The massage machine according to claim 5, wherein the airbags are provided on the upper and lower surfaces of the movable frame.

9. The main body includes a seat portion positioned opposite the buttocks of the user, which is the part to be treated. The massage mechanism is located inside the seat surface of the seat portion, which is the treatment surface, according to claim 1 or 2.

10. The main body includes a seat portion positioned opposite the user's buttocks, which are the part to be treated, and a backrest portion that is erected at the rear of the seat portion. The backrest is configured to be tiltable backward relative to the seat. The massage machine according to claim 1 or 2, wherein the massage mechanism changes the position of the treatment element to the second state as the backrest is tilted backward.

11. The massage machine according to claim 2, wherein the first treatment element is located in front of the second treatment element.

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