Massage units and massage machines

Abstract

To have a simple configuration and suppress a sense of discomfort of a person undergoing therapy by changing over the numbers of massage balls coming into contact with the person undergoing therapy.SOLUTION: A massage unit includes a support plate attached to a base member to be rotatable about a rotation axis extending in the horizontal direction, upper massaging elements and lower massaging elements disposed on the support plate, and a rotating operation part rotatingly reciprocating the support plate between a first position and a second position. When the support plate is in the first position, the upper massaging elements and the lower massaging elements come into contact with a body of a person undergoing therapy, and when the support plate is in the second position, one of the upper massaging elements and the lower massaging elements come into contact with the body of the person undergoing therapy.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a massage unit and a massage machine. [Background technology]

[0002] Japanese Patent Application Laid-Open Publication No. 2006-204452 discloses a massage machine that has a pair of upper and lower kneading balls, and by changing the positions of the upper and lower kneading balls, it is possible to perform treatment using only the upper kneading ball, or to perform treatment using both the upper and lower kneading balls. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2006-204452 A Summary of the Invention [Problem to be solved by the invention]

[0004] The massage machine described in JP 2006-204452 A has a mechanism for moving the upper and lower massage balls independently, and each of them can be operated independently. Therefore, the structure of the massage machine is complicated, and the adjustment of the position of the massage balls relative to the user is complicated.

[0005] An object of the present invention is to provide a massage unit and a massage machine that have a simple configuration and can reduce discomfort to the user by switching the number of kneading balls that come into contact with the user. [Means for solving the problem]

[0006] In order to achieve the above object, the massage unit of the present invention includes a base member and a pair of treatment units arranged on the base member. Each of the pair of treatment units includes a support plate attached to the base member rotatably around a rotation axis extending in the left-right direction, an upper treatment element and a lower treatment element arranged on the support plate at a distance from each other in the circumferential direction centered on the rotation axis, and a rotation operating unit that rotates the support plate back and forth between a first position and a second position different from the first position. When the support plate is in the first position, the upper treatment element and the lower treatment element come into contact with the body of the person to be treated, and when the support plate is in the second position, one of the upper treatment element and the lower treatment element comes into contact with the body of the person to be treated.

[0007] In the above configuration, the rotational operating portion may include an elastic member that imparts to the support plate an elastic force that rotates the support plate toward the first position, and an expansion / contraction portion that can impart to the support plate a force that rotates the support plate toward the second position by expanding with air.

[0008] In the above configuration, the rotation operating portion may have an actuator capable of applying forces to the support plate in both directions around the rotation axis and capable of holding the support plate in the first position and the second position.

[0009] In the above configuration, the support plate may have an upper side arm portion extending from the rotation axis in a first direction and on which the upper massage head is arranged, and a lower side arm portion extending from the rotation axis in a second direction different from the first direction and on which the lower massage head is arranged.

[0010] In the above configuration, the upper treatment head and the lower treatment head are rotating bodies centered on a central axis extending in a direction along the rotation axis, and the maximum outer diameter of the upper treatment head may be larger than the maximum outer diameter of the lower treatment head.

[0011] In order to achieve the above object, the massage machine of the present invention includes a massage unit according to any one of the above configurations, a body support section that supports the body of a person to be treated, and a guide rail extending along a surface of the body support section that contacts the back and thighs of the person to be treated. The massage unit may be guided by the guide rail to move up and down within the body support section, and the support plate may be located at the first position when it contacts the back, and the support plate may be located at the second position when it contacts the thighs. Effect of the Invention

[0012] The massage unit and massage machine according to the present invention have a simple configuration, and can reduce discomfort to the user by switching the number of kneading balls that come into contact with the user. [Brief description of the drawings]

[0013] [Figure 1] 1 is a perspective view of a massage machine according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a perspective view of the massage unit when the treatment section is in a first position. [Diagram 3] 4 is a perspective view of the massage unit when the treatment section is in a second position. FIG. [Figure 4] 4 is a front view of the massage unit when the treatment section is in a second position. FIG. [Diagram 5] 4 is a side view of the treatment unit when the support plate is in a first position. FIG. [Figure 6] 11 is a side view of the treatment unit when the support plate is in a second position. FIG. [Figure 7] FIG. 2 is an enlarged side view of the massage machine with the guide rail and massage unit enlarged. [Figure 8] FIG. 11 is an enlarged side view of a support plate of a treatment section of a massage unit of a first modified example. [Figure 9] FIG. 13 is a side view of the treatment section when the support plate of the massage unit of the second modified example is in the first position. [Figure 10]FIG. 13 is a side view of the treatment section of the massage unit of the second modified example when the support plate is in the second position. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] FIG. 1 is a perspective view of a massage machine 100 according to an embodiment. In the following description, the front side (front face side) as viewed from the user seated on the massage machine 100 is referred to as the "front side", and the rear side (back side) as viewed from the user seated on the massage machine 100 is referred to as the "rear side". Also, the upper side (head side) as viewed from the user seated on the massage machine 100 is referred to as the "upper side", and the lower side (leg side) as viewed from the user seated on the massage machine 100 is referred to as the "lower side". Also, the right side as viewed from the user seated on the massage machine 100 is referred to as the "right side", and the left side as viewed from the user seated on the massage machine 100 is referred to as the "left side". Also, "extending along" a predetermined direction includes not only the case where it strictly extends in the predetermined direction, but also the case where it extends in a direction inclined within a range of less than 45° with respect to the strict direction.

[0015] <Massage Machine 100> The massage machine 100 massages and loosens the whole body of a person supported by the massage machine 100 (hereinafter, referred to as "treatment"). As shown in FIG. 1, the massage machine 100 has a body support section 10, a base section 20, an arm treatment section 30, and a leg treatment section 40.

[0016] The body support section 10 supports the body of the person to be treated. The body support section 10 has a seat section 11 and a backrest section 12. The seat section 11 supports the buttocks and thighs of the person to be treated. The seat section 11 may have an inflatable section for treating the buttocks or thighs. The inflatable section has, for example, a bag body (a so-called airbag) that can be repeatedly inflated and deflated by filling and discharging air. Note that the inflatable sections used in the following description have a similar configuration.

[0017] The backrest 12 supports the shoulders, waist, and back of the user. The backrest 12 stands upright from the rear of the seat 11. The backrest 12 has a reclining function that tilts the upper part backward relative to the seat 11. The backrest 12 may have a reclining motor (not shown) that performs the reclining function.

[0018] The body support section 10 incorporates guide rails 13 and 14 that extend along the surface that contacts the shoulders and waist of the user. A massage unit 50, which will be described later, moves up and down while being guided by the guide rails 13 and 14. The guide rails 13 and 14 extend from the upper part of the backrest section 12 to the rear part of the seat section 11, and the massage unit 50 moves up and down inside the seat section 11 and the backrest section 12. The backrest section 12 may also have an expansion / contraction section that massages the shoulders and sides of the upper arms of the user.

[0019] The base unit 20 is disposed below the body support unit 10 and supports the body support unit.

[0020] The arm treatment sections 30 are provided upright upward from both the left and right ends of the seat section 11. The arm treatment sections 30 each have an inflatable / contractable bag (not shown) built in, and treat the arm of the person being treated by expanding and contracting the bag.

[0021] The leg treatment unit 40 supports the lower legs of the user. The lower legs are, for example, the parts of the legs below the knees. The leg treatment unit 40 is suspended downward from the front of the seat 11. The lower part of the leg treatment unit 40 rotates upward relative to the seat 11. The rotational movement of the leg treatment unit 40 can be performed in synchronization with the reclining movement of the backrest 12. The reclining movement of the backrest 12 and the rotational movement of the leg treatment unit 40 may also be performed independently of each other.

[0022] <Configuration of massage unit 50> FIG. 2 is a perspective view of the massage unit 50 when the pair of treatment parts 52 are in the first position P1. FIG. 3 is a perspective view of the massage unit 50 when the pair of treatment parts 52 are in the second position P2. FIG. 4 is a front view of the massage unit 50 when the pair of treatment parts 52 are in the second position P2. FIG. 5 is a side view of the treatment part 52 when the support plate 520 is in the first position P1. FIG. 6 is a side view of the treatment part 52 when the support plate 520 is in the second position P2. In FIG. 5 and FIG. 6, the upper treatment element 521 and the lower treatment element 522 of the treatment part 52 are in direct contact with the body Bd of the person to be treated, but in reality, a cover member (not shown) is interposed between the upper treatment element 521 and the lower treatment element 522 and the body Bd of the person to be treated.

[0023] The massage unit 50 includes a base member 51 and a pair of treatment sections 52 disposed on the base member 51 .

[0024] <Base member 51> The base member 51 has a left base member part 51A, a right base member part 51B, a lower connecting base member part 51C and an upper connecting base member part 51D. The left base member part 51A and the right base member part 51B are rectangular in front view, and the vertical length is longer than the horizontal length.

[0025] The lower connecting base member part 51C connects the lower end of the left base member part 51A to the lower end of the right base member part 51B. The upper connecting base member part 51D is a cylindrical member bent in the middle, and connects the upper end of the left base member part 51A to the upper end of the right base member part 51B. In addition, the left end of the upper connecting base member part 51D protrudes leftward beyond the left base member part 51A, and the right end protrudes rightward beyond the right base member part 51B.

[0026] <Pair of treatment units 52> The pair of treatment units 52 are arranged symmetrically. Note that, here, the treatment unit 52 arranged on the left side will be used for explanation. Furthermore, when it is necessary to distinguish between the pair of treatment units 52, they will be referred to as the left treatment unit 52 and the right treatment unit 52. Note that when distinguishing between components constituting the pair of treatment units 52, they will be similarly distinguished as the left side or the right side.

[0027] The treatment section 52 includes a support plate 520, an upper treatment element 521, a lower treatment element 522, and a rotation operating section .

[0028] The support plate 520 is attached to the base member 51 so as to be rotatable around a rotation axis Ax extending in the left-right direction. More specifically, the support plate 520 is disposed on the base member 51, and rotatably attached to a shaft extending along the rotation axis Ax. More specifically, the support plate 520 has a cylindrical portion 525 (see FIG. 4, etc.) that is integrally formed and extends in the thickness direction. The cylindrical portion 525 is rotatably disposed on the outside of the shaft. At this time, the center line of the cylindrical portion 525 and the center of the shaft coincide with the rotation axis Ax. As a result, the support plate 520 is supported by the base member 51 so as to be rotatable around the rotation axis Ax.

[0029] The support plate 520 is a flat plate that is substantially L-shaped in side view. In a direction along the flat plate of the support plate 520, a direction toward one of the two forks forming the L shape is defined as a first direction. Also, a direction toward the other of the two forks forming the L shape is defined as a second direction. More specifically, the first direction is a direction along the flat plate of the support plate 520, the first direction is an upward direction from the rotation axis Ax, and the second direction is a direction that forms a certain angle, for example, a right angle, with the first direction from the rotation axis Ax.

[0030] The support plate 520 has an upper side arm portion 523 extending in a first direction and a lower side arm portion 524 extending in a second direction. An upper massaging element 521 is disposed on the upper side arm portion 523. A lower massaging element 522 is disposed on the lower side arm portion 524.

[0031] The upper massaging element 521 and the lower massaging element 522 attached to the support plate 520 are disposed apart from each other in the circumferential direction centered on the rotation axis Ax. The upper massaging element 521 is disposed above the lower massaging element 522.

[0032] The upper treatment element 521 and the lower treatment element 522 are rotating bodies centered on a central axis Bx extending in a direction along the rotation axis Ax. The rotating body centered on the central axis Bx is a solid object that is created when a figure arranged on a plane including the central axis Bx is rotated around the central axis Bx. In this embodiment, the central axis Bx is parallel to the rotation axis Ax, but it does not have to be parallel. The upper treatment element 521 and the lower treatment element 522 provide treatment such as kneading and tapping to the person to be treated by contacting the body of the person to be treated.

[0033] The rotation actuation unit 54 rotates the support plate 520 back and forth between a first position P1 and a second position P2 different from the first position P1. More specifically, the rotation actuation unit 54 applies a force to the support plate 520 in a direction in which the support plate 520 rotates around the rotation axis Ax. The first position P1 and the second position P2 are opposite ends of the rotation around the rotation axis Ax.

[0034] More specifically, the first position P1 is a position where the upper arm 523 of the support plate 520 is rotated backward so that the upper treatment element 521 and the lower treatment element 522 come into contact with the body Bx of the user (see FIG. 5, etc.), i.e., a two-point support position. The second position P2 is a position where the upper arm 523 of the support plate 520 is rotated forward so that only the upper treatment element 521 comes into contact with the body Bx of the user (see FIG. 6), i.e., a one-point support position.

[0035] The rotation actuation part 54 has an elastic member 541 and an expansion / contraction part 542. The elastic member 541 is, for example, a torsion spring, and is attached to the outer circumferential surface of the tube part 525. As shown in Figs. 4 to 6, one end of the elastic member 541 engages with the engaging protrusion 501 of the base member 51, and the other end engages with the engaging part 526 of the support plate 520. The engaging protrusion 501 and the engaging part 526 are bolts (screw members) attached to the base member 51 and the support plate 520, respectively, but are not limited thereto. A wide variety of configurations can be adopted that can engage the end of the elastic member 541. As a result, the elastic member 541 applies an elastic force to the support plate 520 that rotates the support plate 520 toward the first position P1.

[0036] The expansion / contraction portion 542 expands when compressed air is supplied from an air compressor (not shown), and contracts when air is removed. In other words, the expansion / contraction portion 542 is a bag (so-called airbag) that can be repeatedly expanded and contracted by air. The expansion / contraction portion 542 is fixed to the base member 51. The expansion / contraction portion 542 is also formed on the support plate 520 and contacts a pressing portion 527 for pressing down the support plate 520. The expansion / contraction portion 542 is fan-shaped in a side view, and the central angle of the fan shape increases when the expansion / contraction portion 542 expands. When the expansion / contraction portion 542 expands, it presses the pressing portion 527 of the support plate 520 toward the second position P2. In other words, the expansion / contraction portion 542 can impart a force to the support plate 520 that rotates the support plate 520 toward the second position P2 by expanding with air.

[0037] The massage unit 50 further includes a treatment drive mechanism 503. The treatment drive mechanism 503 drives the pair of treatment sections 52 to perform treatment such as kneading and tapping on the body of the person being treated that is in contact with the pair of treatment sections 52.

[0038] The massage unit 50 has guide rollers 61 and 62. The guide rollers 61 and 62 are rotatably supported on both ends of the base member part 51D. The guide roller 61 slides on the guide rail 13 when the massage unit 50 is raised and lowered, and the guide roller 62 slides on the guide rail 14 when the massage unit 50 is raised and lowered.

[0039] The massage unit 50 further includes pinion gears 63 and 64. The pinion gear 63 meshes with a rack provided on the guide rail 13, and the pinion gear 64 meshes with a rack provided on the guide rail 14. The pinion gears 63 and 64 are rotated by an elevation motor disposed in the massage unit 50. The rotation of the pinion gears 63 and 64 causes the massage unit 50 to rise and fall along the guide rails 13 and 14.

[0040] <About the operation of the treatment unit> The support plates 520 of the pair of treatment units 52 are rotated around the rotation axis Ax by the rotation actuator 54. As described above, when air is discharged from inside the expansion / contraction unit 542 and the expansion / contraction unit 542 contracts, the elastic force of the elastic member 541 acts on the support plate 520 in a direction that rotates the support plate 520 toward the first position P1. As a result, the support plate 520 moves to the first position P1. When the support plate 520 moves to the first position P1, the support plate 520 comes into contact with a first stopper 51E provided on the base member 51 and stops at the first position P1 (see FIG. 5).

[0041] 5, when the support plate 520 is in the first position P1, the upper treatment element 521 and the lower treatment element 522 of the treatment unit 52 are likely to come into contact with the body Bd of the user at the same time. This increases the contact area of ​​the treatment unit 52 with the body Bd of the user, thereby suppressing an increase in contact pressure.

[0042] In addition, compressed air is supplied from an air compressor (not shown) to the expansion / contraction portion 542, whereby the expansion / contraction portion 542 expands. As a result, a force is applied to the pressing portion 527 of the support plate 520 from the expansion / contraction portion 542 to rotate the support plate 520 toward the second position P2. The force with which the expansion / contraction portion 542 presses the pressing portion 527 is greater than the elastic force of the elastic member 541. Therefore, as the expansion / contraction portion 542 expands, the support plate 520 is rotated to the second position P2, comes into contact with the second stopper 51F, and stops at the second position P2 (see FIG. 6).

[0043] 6, when the support plate 520 is in the second position P2, the upper treatment element 521 of the treatment section 52 protrudes further forward than the lower treatment element 522. Therefore, when the support plate 520 is in the second position, the upper treatment element 521 is likely to come into contact with the body Bd of the person to be treated. This makes it possible to reduce the contact area of ​​the treatment section 52 with the body Bd of the person to be treated, and to increase the contact pressure.

[0044] In the massage unit 50, the left and right support plates 520 may simultaneously operate to be in the first position P1 or the second position P2. By operating in this manner, when the left and right support plates 520 are in the first position P1, they come into contact with the body Bd of the user at four points, the left and right upper treatment applicators 521 and the left and right lower treatment applicators 522. When the left and right support plates 520 are in the second position P2, they come into contact with the body Bd of the user at two points, the left and right upper treatment applicators 521.

[0045] 7 is an enlarged side view of the massage machine 100, in which the guide rail 14 and the massage unit 50 are enlarged. As shown in FIG. 7, the upper part 131 of the guide rail 13 is disposed in the backrest part 12, and the lower part 132 is disposed in the rear part of the seat part 11. Although not shown, the guide rail 14 has a similar configuration. The massage unit 50 moves up and down inside the backrest part 12 along the guide rails 13 and 14. Then, the massage unit 50 moves from the lower part of the backrest part 12 to the rear part of the seat part 11.

[0046] In the massage machine 100 according to this embodiment, when the massage unit 50 is in the backrest portion 12, the left and right support plates 520 are moved to the second position P2. As a result, the left and right upper treatment elements 521 come into contact with the body Bd of the user at two points.

[0047] When the massage unit 50 is located at the rear of the seat 11, the left and right support plates 520 are moved to the first position P1. As a result, the left and right upper treatment elements 521 and the left and right lower treatment elements 522 come into contact with the body Bd of the user at four points.

[0048] That is, when the massage unit 50 contacts the back of the user, the pair of support plates 520 are positioned at the second position P2, and when the massage unit 50 contacts the thighs of the user, the pair of support plates 520 are positioned at the first position P1.

[0049] As described above, in the backrest 12 where the massage unit 50 receives less force from the user, the massage unit 50 comes into contact with the user's body Bd at two points, thereby increasing the pressure acting on the user's back with the left and right upper treatment applicators 521. In addition, in the seat 11 where the massage unit 50 supports the user from below, the massage unit 50 comes into contact with the user's body Bd at four points, the left and right upper treatment applicators 521 and the left and right lower treatment applicators 522, dispersing the pressure. Therefore, in the massage machine 100, the massage unit 50 can come into contact with the user's body Bd with sufficient pressure to provide treatment, regardless of the position of the massage unit 50.

[0050] In the massage unit 50 of this embodiment, the left and right support plates 520 are pressed by the left and right expansion / contraction parts 542. The left and right expansion / contraction parts 542 are formed so as to contract when a force of a certain level or more acts in the contraction direction in an expanded state. By forming them in this manner, when the pressure contacting the body Bd of the person to be treated becomes a certain level or more, for example, due to the backrest part 12 being reclined, the left and right support plates 520 move to the first position P1 side. This changes the state from a two-point support state to a four-point support state, and the pressure can be dispersed. Therefore, the pressure during treatment can be suppressed to a certain level or less, and the discomfort of the person to be treated caused by the excessive pressure acting from each treatment element can be suppressed.

[0051] In the massage unit 50 according to the present embodiment, the left and right support plates 520 are configured to be in the same position. That is, treatment is performed when both the left and right support plates 520 are in the first position P1 or the second position P2. However, this is not limited to this. For example, one of the left and right support plates 520 may be in the first position P1 and the other in the second position P2. Furthermore, when one of the left and right support plates 520 is in the first position P1, the other may be located between the first position P1 and the second position P2. Furthermore, when one of the left and right support plates 520 is in the second position P2, the other may be located between the first position P1 and the second position P2.

[0052] In the massage unit 50 of this embodiment, the second position P2 is a one-point support position where the support plate 520 is rotated so that the upper side arm 523 protrudes forward and the upper treatment element 521 contacts the body of the user. However, this is not limited to this, and the second position may be a state where the support plate 520 is rotated so that the lower side arm 524 protrudes forward and the lower side arm 522 contacts the body of the user.

[0053] <First Modification> Fig. 8 is an enlarged side view of the support plate 520 of the treatment section 52A of the massage unit of the first modified example. The treatment section 52A of the massage unit 50 shown in Fig. 8 differs from the treatment section 52 in that it has lower treatment elements 522A instead of the lower treatment elements 522. The treatment section 52A has the same configuration as the treatment section 52, except for the lower treatment elements 522A. Therefore, the same reference numerals are used to denote the same parts of the treatment section 52A as those of the treatment section 52, and detailed descriptions of the same parts will be omitted.

[0054] 8, the maximum outer diameter of the upper treatment element 521 is larger than the maximum outer diameter of the lower treatment element 522A. The maximum outer diameter of the treatment element is the maximum diameter of the outer circumferential surface of the treatment element centered on the rotation axis.

[0055] By forming the maximum outer diameter of the lower treatment element 522A smaller than the maximum outer diameter of the upper treatment element 521, when the support plate 520 moves to the second position P2, it is difficult to contact the lower treatment element 522A. Therefore, when a strong pressure is required for treatment, the pressure is unlikely to disperse, and the effect of the treatment can be improved. In this modification, the lower treatment element 522 is replaced with the lower treatment element 522A having a smaller maximum outer diameter, but this is not limited. The lower treatment element 522 may be left as it is and the upper treatment element 521 may be replaced with one having a larger maximum outer diameter.

[0056] <Second Modification> Fig. 9 is a side view of the treatment section 52B when the support plate 520 of the massage unit 50 of the second modified example is in the first position P1. Fig. 10 is a side view of the treatment section 52B when the support plate 520 of the massage unit 50 of the second modified example is in the second position P2. The treatment section 52B shown in Figs. 9 and 10 differs in the rotation actuator 56. Other than this, the treatment section 52B has the same configuration as the treatment section 52, and the same parts are denoted by the same reference numerals and detailed description of the same parts is omitted.

[0057] 9 and 10, the rotation actuating unit 56 of the treatment unit 52B has an actuator that can apply force to the support plate 520 in both directions around the rotation axis Ax and can hold the support plate 520 at the first position P1 and the second position P2.

[0058] The ball nut 562 is fitted onto the ball screw 561 and has balls that roll in a spiral groove formed on the outer circumferential surface of the ball screw 561. The ball nut 562 is rotatably attached to the support plate 520. The driving unit 563 has a power source that rotates the ball screw 561. An example of the power source is, but is not limited to, an electric motor. The driving unit 563 is rotatably supported by the base member 51.

[0059] In the rotation operation unit 56, the ball screw 561 rotates, whereby the ball nut 562 moves along the ball screw 561. The movement of the ball nut 562 causes the support plate 520 to rotate and move toward the first position P1 or toward the second position P2.

[0060] When the rotation actuation unit 56 is used, even if the support plate 520 at the second position P2 is subjected to force from the user, the support plate 520 is unlikely to move to the first position P1 due to the function of the ball screw 561 and the ball nut 562. In order to prevent a certain level of pressure from acting on the upper treatment element 521 even if the user applies force to the upper treatment element 521, the body Bd of the user (e.g., shape, weight, etc.) may be measured in advance, and the second position P2 may be adjusted based on the measurement results. Furthermore, when a certain level of load acts on the upper treatment element 521 from the body Bd of the user, the drive unit 563 may be driven to move the ball nut 562 to the first position P1.

[0061] By including the pair of treatment sections 52 having such a configuration, the massage unit 50 can prevent pressure above a certain level from being applied to the body Bd of the person to be treated, thereby reducing discomfort to the person to be treated.

[0062] Although the embodiments and modifications of the present invention have been described above, the configurations and their combinations in the embodiments are merely examples, and additions, omissions, substitutions, and other modifications of the configurations are possible without departing from the spirit of the present invention. Furthermore, the present invention is not limited to the embodiments. [Industrial Applicability]

[0063] The present invention can be used in a chair-type massage machine that kneads and relaxes the body of a person to be treated. [Explanation of symbols]

[0064] 100 Massage Machine 10 Body support part 11 Seat area 12 Backrest 13 Guide rail 14 Guide rail 20 Base 30 Arm Treatment Section 40 Leg Treatment Section 50 Massage Unit 501 Engagement protrusion 503 Treatment drive mechanism 51 Base material 51A Base component parts 51B Base component parts 51C Base component parts 51D Base component parts 51E First stopper 51F 2nd stopper 52 Treatment Department 520 Support Plate 521 Upper treatment element 522 Lower treatment child 523 Upper side arm 524 Lower side arm 525 Cylinder part 526 Engagement part 527 Pressing part 52A Treatment Department 522A Lower treatment element 52B Treatment Department 54 Rotational operating part 541 Elastic Members 542 Expansion and contraction section 56 Rotational operating part 561 Ball screw 562 Ball nut 563 Drive unit 61 Guide roller 62 Guide roller 63 Pinion gear 64 Pinion gear Bd body Ax Rotation axis Bx center axis P1 1st position P2 2nd position

Claims

1. A base member; A pair of treatment units disposed on the base member. Each of the pair of treatment units is A support plate attached to the base member so as to be rotatable about a rotation axis extending in the left-right direction; an upper massaging element and a lower massaging element that are arranged on the support plate and spaced apart from each other in a circumferential direction around the rotation axis; a rotation actuating portion that rotates the support plate reciprocally between a first position and a second position different from the first position, When the support plate is in the first position, the upper treatment element and the lower treatment element come into contact with the body of the user, and when the support plate is in the second position, one of the upper treatment element and the lower treatment element comes into contact with the body of the user, The rotation operation unit includes: an elastic member that applies an elastic force to the support plate to rotate the support plate toward the first position; an expansion / contraction section that applies a force to the support plate by expanding with air to rotate the support plate toward the second position; The expansion / contraction section is configured to contract when a force of a certain level or more acts in a contraction direction in an expanded state, and contracts when a force of a certain level or more acts in a contraction direction when the support plate is in the second position, The massage unit, the support plate being configured to move to the first position.

2. A massage unit according to claim 1 , A body support part that supports the body of the person to be treated; A guide rail extending along a surface of the body support part that contacts the back and thighs of the user's body, The massage unit is guided by the guide rail to rise and fall within the body support portion, and the support plate is positioned at the second position when it contacts the back portion, and the support plate is positioned at the first position when it contacts the thigh portion.

3. The support plate is an upper arm portion extending in a first direction from the rotation axis and on which the upper treatment head is disposed; The massage unit according to claim 1 , further comprising: a lower arm portion on which the lower treatment head is disposed, the lower arm portion extending from the rotation shaft in a second direction different from the first direction.

4. The upper and lower massage heads are rotating bodies having a central axis extending in a direction along the rotation axis, 4. The massage unit according to claim 1, wherein the maximum outer diameter of the upper treatment element is larger than the maximum outer diameter of the lower treatment element.

5. The support plate is an upper arm portion extending in a first direction from the rotation axis and on which the upper treatment head is disposed; The massage machine according to claim 2 , further comprising: a lower arm portion on which the lower treatment head is disposed, the lower arm portion extending from the rotation shaft in a second direction different from the first direction.

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