Treatment mechanism and massager

Abstract

A treatment mechanism and a massager, which help to simplify the overall structure, and reduce the manufacturing cost. The treatment mechanism of the present invention comprises a rotary shaft; a first treatment arm and a second treatment arm, which are spaced apart from each other and rotatably arranged on the rotary shaft, and are provided with massage parts that move towards each other to massage a treated part, wherein at least one of the first treatment arm and the second treatment arm is eccentric and inclined relative to the rotary shaft; and a restricting part, which restricts the first treatment arm and the second treatment arm from rotating with the rotation of the rotary shaft. At least one of the first treatment arm and the second treatment arm comprises: a main body provided with a massage part and a restricted part fixed relative to the main part. The restricting part cooperates with the restricted part to restrict the movement of the restricted part in the circumferential direction of the rotary shaft, but allows the movement of the restricted part in the radial direction and the extension direction of the rotary shaft.

Description

Treatment institutions and massage machines Technical Field

[0001] The present invention relates to the field of massage equipment, and in particular to a treatment mechanism and a massage machine for treating a treated part. Background Art

[0002] Patent document JP2001112826A discloses a massage mechanism that mimics the shape of a human hand. The massage mechanism comprises a treatment portion for massaging a user's shoulders, etc. The treatment portion includes a rotating shaft, and first and second links formed by a linkage mechanism. The first and second links are driven by the rotating shaft to face each other in a forward-facing direction, thereby providing a forward-gripping massage of the user's treatment area from both the front and back sides.

[0003] However, in the aforementioned massage mechanism, a large number of components are required to coordinate the movement of the first and second links, which easily complicates the overall structure. Furthermore, this link mechanism, while capable of providing only clamping massage, cannot reproduce hand massage movements, including kneading massage, and thus cannot provide the user with a rich massage sensation.

[0004] Furthermore, JP2001-112826A discloses a massage chair having a chair back with a hand-shaped treatment member provided on the upper portion of the chair back for treating the shoulders of a person being treated.

[0005] However, in the case of the above-mentioned massage chair, when the person being treated stands up after the treatment, he or she may be hindered by the hand-shaped treatment element. Summary of the Invention

[0006] In view of the above problems, the object of the present invention is to provide a treatment mechanism that helps to simplify the overall structure and reduce manufacturing costs.

[0007] In addition, the present invention also aims to provide a treatment mechanism that can reproduce the movements of human hands with a simple structure and a massage machine equipped with the treatment mechanism, which can provide the person being treated with a rich massage sensation.

[0008] In addition, the present invention also aims to provide a massage machine that makes it easier for the person being treated to get up.

[0009] In order to achieve the above-mentioned objectives, the present invention provides a treatment mechanism, comprising: a rotating shaft; a first treatment arm and a second treatment arm, the first treatment arm and the second treatment arm are spaced apart and rotatably arranged on the rotating shaft, and have massage parts that massage the treated part in a manner close to each other, at least one of the first treatment arm and the second treatment arm is eccentric and inclined relative to the rotating shaft; and a limiting part, the limiting part limits the first treatment arm and the second treatment arm to rotate with the rotation of the rotating shaft, at least one of the first treatment arm and the second treatment arm includes: a main body provided with the massage part; and a restricted part fixed relative to the main body, the limiting part cooperates with the restricted part to limit the movement of the restricted part in the circumferential direction of the rotating shaft, but allows the restricted part to move in the radial direction of the rotating shaft and the extension direction of the rotating shaft.

[0010] According to the treatment mechanism of the present invention, at least one of the first treatment arm and the second treatment arm includes: a main body provided with a massage part; and a restricted part fixed relative to the main body, the restricting part cooperates with the restricted part to limit the movement of the restricted part in the circumferential direction of the rotating shaft, but allows the restricted part to move in the radial direction of the rotating shaft and the extension direction of the rotating shaft, thereby helping to simplify the overall structure and reduce manufacturing costs.

[0011] Furthermore, in the treatment mechanism of the present invention, it is preferable that, in at least one of the first treatment arm and the second treatment arm, the restricted portion is formed integrally with the main body.

[0012] According to the treatment mechanism of the present invention, in at least one of the first treatment arm and the second treatment arm, the restricted portion is formed integrally with the main body, thereby further simplifying the overall structure and reducing manufacturing costs.

[0013] In addition, in the treatment mechanism of the present invention, the limiting part preferably has a guide groove, which extends parallel to the rotation axis and is for the restricted part to be inserted. The guide groove limits the movement of the restricted part in the groove width direction, but allows the restricted part to move in the groove length direction and the groove depth direction.

[0014] According to the treatment mechanism of the present invention, the restricting portion includes a guide groove extending parallel to the rotation axis and into which the restricted portion is inserted. The guide groove restricts movement of the restricted portion in the groove width direction, but allows movement of the restricted portion in the groove length and groove depth directions. Therefore, the restricting portion has a simple structure and is easy to form.

[0015] Furthermore, in the treatment mechanism of the present invention, preferably, the massage portion of the first treatment arm and the massage portion of the second treatment arm have different movement trajectories.

[0016] According to the treatment mechanism of the present invention, the massage part of the first treatment arm and the massage part of the second treatment arm have different movement trajectories, thereby helping to enrich the massage patterns.

[0017] Furthermore, in the treatment mechanism of the present invention, preferably, the massage portion of the first treatment arm and the massage portion of the second treatment arm have different shapes.

[0018] According to the treatment mechanism of the present invention, the massage part of the first treatment arm and the massage part of the second treatment arm have different shapes, thereby contributing to enriching the massage patterns.

[0019] Furthermore, in the treatment mechanism of the present invention, preferably, the first treatment arm and the second treatment arm each include a main body and a restricted portion fixed relative to the main body, and the massage portion of the first treatment arm is detachably provided on the main body of the first treatment arm.

[0020] According to the treatment mechanism of the present invention, the first treatment arm and the second treatment arm respectively include a main body and a restricted part fixed relative to the main body. The massage part of the first treatment arm is detachably arranged on the main body of the first treatment arm. Therefore, the required massage part of the first treatment arm can be flexibly replaced as needed.

[0021] Furthermore, in the treatment mechanism of the present invention, it is preferable that a portion of at least one of the massage portion of the first treatment arm and the massage portion of the second treatment arm that contacts the treated part has a spherical shape.

[0022] According to the treatment mechanism of the present invention, the portion of at least one of the massage part of the first treatment arm and the massage part of the second treatment arm that contacts the treated part is spherical, thereby helping to prevent damage to the treated part.

[0023] Furthermore, in the treatment mechanism of the present invention, it is preferable that a plurality of massage parts of the second treatment arm are arranged in a straight line.

[0024] According to the treatment mechanism of the present invention, the second treatment arm has a plurality of massage parts arranged in a straight line, thereby helping to increase the massage area.

[0025] In addition, in the treatment mechanism of the present invention, it is preferred that the first treatment arm and the second treatment arm are respectively eccentric and inclined relative to the rotation axis, the eccentricity of the first treatment arm relative to the rotation axis is different from the eccentricity of the second treatment arm relative to the rotation axis, and / or the inclination of the first treatment arm relative to the rotation axis is different from the inclination of the second treatment arm relative to the rotation axis.

[0026] According to the treatment mechanism of the present invention, the first treatment arm and the second treatment arm are respectively eccentric and inclined relative to the rotation axis, the eccentricity of the first treatment arm relative to the rotation axis is different from the eccentricity of the second treatment arm relative to the rotation axis, and / or the inclination of the first treatment arm relative to the rotation axis is different from the inclination of the second treatment arm relative to the rotation axis, thereby helping to enrich the massage mode.

[0027] Furthermore, the treatment mechanism of the present invention preferably further includes a motor that drives the rotating shaft to rotate, is disposed between the first treatment arm and the second treatment arm in the extending direction of the rotating shaft, and extends perpendicularly to the rotating shaft.

[0028] According to the treatment mechanism of the present invention, it also includes a motor, which drives the rotating shaft to rotate. The motor is arranged between the first treatment arm and the second treatment arm in the extension direction of the rotating shaft, and extends perpendicularly to the rotating shaft, which helps to compactly construct the treatment mechanism and realize the miniaturization of the treatment mechanism.

[0029] In addition, in the treatment mechanism of the present invention, it is preferred that the first treatment arm includes a first main body and a first restricted portion fixed relative to the first main body, the second treatment arm includes a second main body and a second restricted portion fixed relative to the second main body, the first main body has a first plate-shaped portion extending crosswise with the rotation axis, a protrusion protruding toward the second treatment arm is formed at the end of the first plate-shaped portion opposite to the restricting portion, a first massage portion is provided at the front end of the protrusion, the second main body has a second plate-shaped portion extending crosswise with the rotation axis, and a second massage portion is provided at the end of the second plate-shaped portion opposite to the restricting portion.

[0030] Furthermore, in order to achieve the above-mentioned object, the present invention provides a massage machine having any one of the above-mentioned treatment mechanisms.

[0031] In addition, in order to achieve the above-mentioned purpose, the present invention provides a massage machine having a frame and a shoulder treatment unit, wherein the shoulder treatment unit includes: a fixed part, which is connected and fixed to the frame; a movable part, which has a treatment mechanism, is supported on the frame via the fixed part, and can move along the shoulder width direction relative to the fixed part; and a force-applying part, which drives the movable part to move back and forth.

[0032] According to the massage machine of the present invention, when the person being treated stands up after the treatment, the force-applying part is used to move the movable part toward the outside in the shoulder width direction, thereby preventing the movable part with the treatment mechanism from interfering with the shoulders of the person being treated, making it easier for the person to stand up.

[0033] Furthermore, in the massage machine of the present invention, it is preferable that the urging portion includes a telescopic member that reciprocates the moving portion by telescoping.

[0034] Furthermore, in the massage machine of the present invention, it is preferable that the telescopic member includes an elastic member that is provided between the fixed portion and the movable portion and urges the movable portion toward the outside in the shoulder width direction.

[0035] According to the massage machine of the present invention, when the massage machine is in a non-working state such as when the massage is finished or the power is disconnected, the movable part can be naturally reset to the outside in the shoulder width direction, which makes it easy for the person being treated to get up and saves energy.

[0036] Furthermore, in the massage machine of the present invention, it is preferable that the telescopic member includes an airbag, the airbag being provided between the fixed portion and the movable portion and biasing the movable portion toward the inner side in the shoulder width direction when inflated.

[0037] According to the massage machine of the present invention, when the massage machine is in a non-working state such as when the massage is finished or the power is disconnected, the movable part is reset to the outside in the shoulder width direction, which makes it easy for the person being treated to get up and saves energy.

[0038] Furthermore, in the massage machine of the present invention, it is preferred that the fixed portion include a guide rail extending in the shoulder width direction, and the movable portion include a slider slidably engaged with the guide rail.

[0039] Furthermore, in the massage machine of the present invention, it is preferable that the slider includes an upper abutting portion abutting against the guide rail from above and a lower abutting portion abutting against the guide rail from below.

[0040] According to the massage machine of the present invention, during the massage process, even if the treatment mechanism receives a reaction force from the shoulders of the person being treated, the vertical position of the moving part is easily maintained, ensuring that the massage can be performed as set.

[0041] Furthermore, in the massage machine of the present invention, it is preferable that a movement restriction structure is provided between the moving portion and the fixed portion.

[0042] According to the massager of the present invention, a movement-limiting structure is provided between the movable portion and the fixed portion. The movement-limiting structure regulates the range of movement of the movable portion relative to the fixed portion. The movement-limiting structure limits the range of movement of the movable portion in the shoulder-width direction, thereby suppressing excessive movement of the movable portion inward in the shoulder-width direction. The movement-limiting structure also limits the movement of the movable portion in the front-to-back direction, further ensuring that the movable portion only moves in the shoulder-width direction relative to the fixed portion, without any deviation in the front-to-back direction.

[0043] Furthermore, in the massage machine of the present invention, it is preferable that the shoulder treatment unit includes a detection section that detects movement of the moving section.

[0044] Furthermore, in the massage machine of the present invention, it is preferable that the shoulder treatment unit includes a control section configured to control the operation of the biasing section based on a detection result of the detection section.

[0045] According to the massage machine of the present invention, the shoulder treatment unit includes the control section, and the control section controls the movement of the force applying section according to the detection result of the detection section, thereby being able to accurately control the movement of the moving section.

[0046] According to the present invention, it is possible to provide a treatment mechanism capable of reproducing the movement of a human hand with a simple structure, and a massage machine including the treatment mechanism.

[0047] In addition, according to the present invention, a massage machine can be provided. When the person being treated stands up after the treatment, the force-applying part is used to move the movable part toward the outside in the shoulder width direction, thereby preventing the movable part with the treatment mechanism from interfering with the shoulders of the person being treated, making it easier for the person being treated to stand up. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] FIG1 is a side view schematically showing a frame of a massage machine according to an embodiment of the present invention.

[0049] FIG. 2 is a partial top view schematically showing a frame of the massage machine according to the embodiment of the present invention.

[0050] FIG3 is a perspective view schematically showing a shoulder treatment unit of the massage machine according to the embodiment of the present invention.

[0051] FIG4A is a side sectional view schematically showing the shoulder treatment unit of the massage machine according to the embodiment of the present invention, and shows a state where the moving part S2 is located at the retracted position.

[0052] FIG4B is a side sectional view schematically showing the shoulder treatment unit of the massage machine according to the embodiment of the present invention, and shows a state where the moving portion S2 is located at the extended position.

[0053] FIG5 is an exploded perspective view schematically showing a shoulder treatment unit of the massage machine according to the embodiment of the present invention.

[0054] FIG6 is a top view schematically showing the treatment mechanism according to the embodiment of the present invention, schematically illustrating the movement trajectory of the first massage part and the second massage part and the movement trajectory of the first restricted structure.

[0055] FIG7 is a plan view schematically showing a part of the structure of the treatment mechanism according to the embodiment of the present invention.

[0056] FIG8 is a perspective view schematically showing a part of the structure of the treatment mechanism according to the embodiment of the present invention.

[0057] FIG9 is a perspective view schematically showing a first treatment arm in the treatment mechanism according to the embodiment of the present invention.

[0058] FIG10 is a perspective view schematically showing a main body of a first treatment arm in the treatment mechanism according to the embodiment of the present invention.

[0059] FIG. 11 is a perspective view schematically showing a second treatment arm in the treatment mechanism according to the embodiment of the present invention.

[0060] FIG. 12 is a perspective view schematically showing a treatment mechanism according to a modified example of the present invention.

[0061] FIG. 13 is another perspective view schematically showing a treatment mechanism according to a modified example of the present invention.

[0062] (Explanation of Reference Symbols) A Massage machine J Frame J1 Seat J2 Backrest S Shoulder treatment unit S1 Fixed portion S2 Moving portion S3 Force applying portion S4 Detection portion 1 Treatment assembly 11 Rotating shaft 12 Treatment arm 12A First treatment arm 121A First main body 1211A First massage portion 1212A First restricted portion 1218A Protrusion 1219A First plate-shaped portion 12B Second treatment arm 121B Second main body 1211B Second massage portion 1212B Second restricted portion 1219B Second plate-shaped portion 13 Driving mechanism 131 Motor 1311 Motor housing 1312 Driving shaft 132 Transmission mechanism 1321 Turbine 14 Holding seat 151A First bearing 152A Second bearing 16A First cam member 161A First cylindrical portion 162A First cover portion 16B Second cam member 161B Second cylindrical portion 162B Second cover 2 Support body 21 Support plate 22 First cover 221Limiting portion 2221 Guide groove 2221A First guide groove 2221B Second guide groove 23 Slider 231 Upper abutting portion 232 Lower abutting portion 233 Connecting portion 24 Protrusion 25 Second cover 71 Detected element 72 Detecting element 80 Telescopic member 81 Elastic member 82 Airbag 91 Base 911 Bottom plate 912 Side plate 913 Guide rail 9131 Groove 914 Mounting portion 915 Reinforcing plate 92 Connecting arm 921 Bottom plate 922 Reinforcing plate GV1 First cam groove GV2 Second cam groove P11 First large diameter portion P12 First small diameter portion P21 Second large diameter portion P22 Second small diameter portion TH1 First through hole TH2 Second through hole DETAILED DESCRIPTION

[0063] Next, a massage machine according to an embodiment of the present invention will be described with reference to FIG. 1 to FIG. 11 .

[0064] Here, for the sake of convenience, the orientation of the massage machine structure will be described as the orientation when the person seated on the massage machine is observed. For example, the front side (front side) of the person seated on the massage machine will be referred to as the "front side" or "front", the back side (back side) will be referred to as the "back side" or "back", the upper side (head side) will be referred to as the "upper side" or "upper", the lower side (foot side) will be referred to as the "lower side" or "lower", the right side will be referred to as the "right side" or "right", and the left side will be referred to as the "left side" or "left". In addition, the shoulder width direction of the person seated on the massage machine will be referred to as the "shoulder width direction", that is, the left and right direction of the massage machine. The "outer side in the shoulder width direction" corresponds to the direction away from the neck of the person seated on the massage machine in the shoulder width direction, and the "inner side in the shoulder width direction" corresponds to the direction close to the neck of the person seated on the shoulder width direction.

[0065] -The overall structure of the massage machine

[0066] As shown in Figures 1 to 4B, massager A comprises a frame J and a shoulder treatment unit S, which provides treatment for the patient's shoulders. The shoulder treatment unit S comprises a fixed portion S1, a movable portion S2, and a force-applying portion S3. The fixed portion S1 is connected and fixed to the frame J. The movable portion S2 comprises a treatment mechanism, is supported by the fixed portion S1 on the frame J, and is movable relative to the fixed portion S1 in the shoulder width direction. The force-applying portion S3 drives the movable portion S2 to reciprocate.

[0067] Here, as shown in Figures 1 and 2, the massage machine A is a massage chair. The frame J includes a seat J1 and a backrest J2. The seat J1 is for the person being treated to sit on. The backrest J2 is connected to the seat J1 in a rotatable manner, for example, and is for the person being treated to lean on his back. The shoulder treatment unit S is provided on the upper part of the backrest J2. A left shoulder treatment unit S and a right shoulder treatment unit S are provided on the left and right sides of the backrest J2, respectively. The shoulder treatment units S are provided in pairs on the left and right sides in the shoulder width direction in such a manner that their respective treatment mechanisms are closer to each other than their respective fixing parts S1. That is, the treatment mechanisms of the shoulder treatment units S on the left and right sides are both located more on the inner side of the fixing part S1 in the left-right direction.

[0068] -Structure of the shoulder treatment unit-

[0069] As described above, the shoulder treatment unit S includes the fixing portion S1 , the moving portion S2 , and the force applying portion S3 .

[0070] Here, as shown in FIG. 4A , FIG. 4B and FIG. 5 , the shoulder treatment unit S includes a detection portion S4 that detects the position of the moving portion S2 relative to the fixed portion S1 .

[0071] Although not shown in the drawings, the shoulder treatment unit S further includes a control unit that controls the operation of the biasing unit S3 based on the detection result of the detection unit S4.

[0072] 1) Specific structure of the fixed part

[0073] In this embodiment, the fixing portion S1 is fixed to the frame J.

[0074] 3 to 5 , the fixed portion S1 includes a base 91 and a connecting arm 92. The base 91 holds the movable portion S2. The connecting arm 92 connects and fixes the base 91 to the frame J.

[0075] In addition, as shown in Figures 3 to 5, the base 91 includes a bottom plate 911 and side plates 912. The thickness direction of the bottom plate 911 is consistent with the up-down direction. The bottom plate 911 supports the movable part S2 from below. A guide rail 913 is provided on the bottom plate 911, and the guide rail 913 extends in the shoulder width direction. A groove 9131 is provided in the center portion of the guide rail 913 in the width direction (front-back direction) and is recessed downward relative to the guide surface of the guide rail 913. The groove 9131 extends in the shoulder width direction and is provided for the insertion of the protrusion 24 (refer to Figures 4A and 4B, where a portion of the protrusion 24 is shown in dotted lines) of the movable part S2. In the shoulder width direction, the length of the groove 9131 is less than the length of the guide rail 913. The protrusion 24 moves within the length of the groove 9131 in the shoulder width direction. A mounting portion 914 is also provided on the bottom plate 911, and the components of the detection part S4 are mounted on the mounting portion 914. In this embodiment, a pair of guide rails 913 are provided at intervals in the front-to-back direction. Side panels 912 extend upward from the outer ends of the bottom panel 911 in the shoulder width direction. The thickness of the side panels 912 coincides with the shoulder width direction. The base 91 also includes a pair of reinforcing plates 915 extending upward from both ends of the bottom panel 911 in the front-to-back direction. The thickness of the reinforcing plates 915 coincides with the front-to-back direction. The side panels 912 protrude further upward than the reinforcing plates 915.

[0076] In addition, as shown in Figures 3 to 5, the connecting arm 92 includes a base plate 921. The base plate 921 is in the shape of an elongated strip extending in the front-to-back direction. The thickness direction of the base plate 921 is consistent with the shoulder width direction. A plurality of holes are provided on the base plate 921 for connecting and fixing with the frame J, the side plates 912 of the base 91, the force-applying portion S3, etc. The connecting arm 92 also includes a pair of reinforcing plates 922, which stand upright from both ends of the base plate 921 in the up-down direction toward the same side in the shoulder width direction and toward the side plates 912 of the base 91. The thickness direction of the reinforcing plates 922 is consistent with the up-down direction. The connecting arm 92 protrudes further rearward than the side plates 912 of the base 91.

[0077] 2) Specific structure of the moving part

[0078] As described above, the moving part S2 has a treatment mechanism.

[0079] Here, the movable portion S2 can move in the shoulder width direction, thereby moving between a retracted position and an extended position that is closer to the inside of the shoulder width direction than the retracted position (closer to the neck of the person being treated than the retracted position). In this embodiment, the retracted position and the extended position are arranged in the left-right direction, and are at the same position in the up-down direction relative to the massage machine. When the movable portions S2 of the shoulder treatment units S on the left and right sides are both in the retracted position, the distance between the left and right treatment mechanisms is K1. When the movable portions S2 of the shoulder treatment units S on the left and right sides are both in the extended position, the distance between the left and right treatment mechanisms is K2. Distance K1 is greater than distance K2. When distance K1 is greater than the width of the backrest supporting the back of the person being treated, it helps the person being treated to sit down.

[0080] 3 and 5 , the treatment mechanism of the movable portion S2 includes a treatment unit 1 and a support body 2. The treatment unit 1 includes a rotation shaft 11 extending in a direction intersecting the shoulder width direction (in the illustrated example, the front-to-back direction), and a pair of treatment arms 12 supported on the rotation shaft 11 so as to be eccentrically rotatable relative to the rotation shaft 11. The support body 2 supports the treatment unit 1 and includes a limiting portion 221 that limits the rotation of the pair of treatment arms 12 as the rotation shaft 11 rotates.

[0081] 3 to 5 , the support body 2 includes a slider 23 that is slidably engaged with the guide rail 913. The limiting portion 221 of the support body 2 further includes a guide groove 2221 into which the restricted portions 1212A and 1212B of the treatment arm 12 are inserted, thereby limiting the movement trajectory of the treatment arm 20.

[0082] In this embodiment, as shown in Figures 3 to 5, the support body 2 has a support plate 21, a first cover 22 and a second cover 25. The thickness direction of the support plate 21 is consistent with the up-down direction. The first cover 22 is arranged above the support plate 21, and the support plate 21 protrudes inwardly in the shoulder width direction relative to the first cover 22. The first cover 22 has two protruding portions constituting a limiting portion 221 that protrude from the base plate 22 on both sides in the front-back direction. Each limiting portion 221 has a guide groove 2221 that extends in the front-back direction and opens toward one side in the shoulder width direction and the treatment component 1 side. A slider 23 is fixed below the limiting portion 221 of the first cover 22. The slider 23 has: an upper abutting portion 231 that abuts against the guide rail 913 from the upper side; and a lower abutting portion 232 that abuts against the guide rail 913 from the lower side. The slider 23 also has a connecting portion 233 that connects the upper abutment portion 231 and the lower abutment portion 232. In the illustrated example, a pair of lower abutment portions 232 are provided spaced apart in the front-to-back direction, and the slider 23 as a whole is formed into a C-shape that opens downward. The slider 23 is provided with a protrusion 24 that is inserted into the groove 9131 of the guide rail 913. The protrusion 24 is formed, for example, by a screw and extends vertically through the vicinity of the rear end of the support plate 21. The second cover 25 covers the treatment unit 1 from above and from both sides in the front-to-back direction and can be attached and detached relative to the first cover 22.

[0083] A pair of sliders 23 are spaced apart in the front-to-back direction. These sliders 23 correspond to a pair of guide rails 913. The guide rails 913 are inserted in the left-right direction into the hollow space formed by the upper and lower abutment portions 231, 232 of the sliders 23. As a result, the guide rails 913 slidably abut against the upper and lower abutment portions, forming a sliding abutment structure. As the sliders 23 move along the guide rails 913, the upper and lower abutment portions 231, 232 prevent the sliders 23 from disengaging in the vertical direction.

[0084] A movement limiting structure is provided between the slider 23 of the movable part S2 and the guide rail 913 of the fixed part S1. The movement limiting structure limits the movement range of the slider 23 in the shoulder width direction. The movement limiting structure includes the above-mentioned protrusion 24 provided on the slider 23 and the above-mentioned groove 9131 provided on the guide rail 913. The groove 9131 extends in the shoulder width direction, and the protrusion 24 is provided corresponding to the groove 9131, inserted into the groove 9131, and moves within the range of the groove 9131. The protrusion 24 can only move in the shoulder width direction within the length range of the groove 9131, thereby limiting the movement range of the protrusion 24 in the shoulder width direction. Therefore, excessive movement of the movable part S2 toward the inner side in the shoulder width direction can be suppressed. The movement of the protrusion 24 within the width range of the groove 9131 is limited, which can further ensure that the slider 23 slides only along the guide rail 913 without deviation in the front and rear directions.

[0085] The sliding abutment structure between the guide rail 913 and the slider 23 cooperates with the movement limiting structure, which can not only ensure that the shoulder treatment unit S does not deviate in the left and right directions, but also ensure that the shoulder treatment unit S can perform stable treatment actions even if it moves left and right while treating the shoulder (that is, it is subjected to forces in the up and down directions).

[0086] Next, the treatment assembly 1 and the guide groove 2221 cooperating therewith are described in further detail.

[0087] As described above, the treatment assembly 1 includes the rotation shaft 11 and the pair of treatment arms 12 .

[0088] 5 , the treatment unit 1 further includes a drive mechanism 13 and a holder 14. The drive mechanism 13 drives the rotating shaft 11 to rotate. The holder 14 is fixed to the support 2 and supports the rotating shaft 11 and the drive mechanism 13.

[0089] 5 and 7 , the rotary shaft 11 extends in the front-rear direction and is rotatably supported by the holder 14 via a first bearing 151A and a second bearing 152A arranged at intervals in the front-rear direction.

[0090] 5 , the paired treatment arms 12 include a first treatment arm 12A and a second treatment arm 12B. The first treatment arm 12A and the second treatment arm 12B are spaced apart and rotatably disposed on the rotation axis 11. The first treatment arm 12A and the second treatment arm 12B are respectively eccentric and tilted relative to the rotation axis 11 (i.e., the rotation centers of the first treatment arm 12A and the second treatment arm 12B are not consistent with the rotation center of the rotation axis 11, and the extension directions of the main bodies of the first treatment arm 12A and the second treatment arm 12B are tilted relative to the extension direction of the rotation axis 11).

[0091] Furthermore, as shown in Figures 5 and 9 , the first treatment arm 12A includes a first body 121A having a first massage portion 1211A, and a first restricted portion 1212A fixed relative to the first body 121A. As shown in Figures 5 and 11 , the second treatment arm 12B includes a second body 121B having a second massage portion 1211B, and a second restricted portion 1212B fixed relative to the second body 121B. The first massage portion 1211A and the second massage portion 1211B face each other with a gap therebetween, each massaging the shoulders of the person being treated. The first restricted portion 1212A and the second restricted portion 1212B are respectively inserted into a pair of guide grooves 2221 of the support body 2 , thereby restricting the rotation of the first treatment arm 12A and the second treatment arm 12B as the rotation shaft 11 rotates. Specifically, a pair of guide grooves 2221 of the support body 2 limit the circumferential movement of the first restricted portion 1212A and the second restricted portion 1212B around the rotating shaft 11, but allow the first restricted portion 1212A and the second restricted portion 1212B to move in the radial direction of the rotating shaft 11 and in the extension direction of the rotating shaft 11.

[0092] (First treatment arm and its supporting structure)

[0093] As described above, the first treatment arm 12A includes the first body 121A provided with the first massage part 1211A and the first restricted part 1212A fixed to the first body 121A.

[0094] As shown in Figures 5 to 7 and 9, the first body 121A includes a first extension, or first plate-shaped portion 1219A, extending in a direction intersecting the rotation axis 11. A protrusion 1218A is formed at the end of the first plate-shaped portion 1219A opposite the guide groove 2221, projecting toward the second treatment arm 12B. In the illustrated example, the protrusion 1218A is formed in a columnar shape that folds back toward the rotation axis 11 from the end of the first plate-shaped portion 1219A opposite the guide groove 2221, but this is not limited to this. The first massage portion 1211A is provided at the front end of the protrusion 1218A.

[0095] Furthermore, as shown in Figures 9 and 10, the first massage part 1211A is detachably mounted on the first body 121A (in the illustrated example, it is mounted on the front end of the protrusion 1218A, but this is not limited to this embodiment). The portion of the first massage part 1211A that contacts the treatment area is spherical. Furthermore, as shown in Figure 6, the motion trajectory T1 of the first massage part 1211A is formed into a closed shape, for example, with a larger span in the direction of the rotation axis 11 than in the radial direction of the rotation axis 11.

[0096] Furthermore, as shown in Figures 9 and 10 , the first restricted portion 1212A is integrally formed with the first body 121A. The first restricted portion 1212A protrudes from the first body 121A in a direction away from the first massage portion 1211A. Furthermore, as shown in Figure 5 , the first restricted portion 1212A is a cylindrical protrusion (also referred to as a pin) that protrudes from the first body 121A toward the guide groove 2221.

[0097] In addition, as shown in Figures 5 to 8, the first treatment arm 12A is supported on the rotating shaft 11 eccentrically and obliquely relative to the rotating shaft 11 via the first cam component 16A. The first cam component 16A is mounted on the rotating shaft 11 in an eccentric manner relative to the rotating shaft 11. The first cam component 16A includes a first barrel portion 161A and a first cover portion 162A mounted on the rotating shaft 11. The first barrel portion 161A and the first cover portion 162A form a first cam groove GV1. The first barrel portion 161A is fixed to the rotating shaft 11 and has a first large diameter portion P11 arranged along the extension direction of the rotating shaft 11 and a first small diameter portion P12 having an outer diameter smaller than that of the first large diameter portion P11. The first cover portion 162A has an outer diameter larger than that of the first small diameter portion P12. The first cover portion 162A is assembled to the first barrel portion 161A from the side opposite to the first large diameter portion P11 relative to the first small diameter portion P12. The end surface of the first large-diameter portion P11 located on the side of the first small-diameter portion P12 is not orthogonal to the extension direction of the rotation axis 11, and the angle A formed between the two is less than 90 degrees. The end surface of the first cover portion 162A located on the side of the first small-diameter portion P12 forms an angle B with the extension direction of the rotation axis 11 that is also less than 90 degrees. In this embodiment, angle A and angle B are identical. That is, the end surface of the first large-diameter portion P11 located on the side of the first small-diameter portion P12 and the end surface of the first cover portion 162A located on the side of the first small-diameter portion P12 are opposite and parallel to each other, and both have the same inclination angle relative to the rotation axis 11. The end surface of the first large-diameter portion P11 located on the side of the first small-diameter portion P12 and the end surface of the first cover portion 162A located on the side of the first small-diameter portion P12 form the sidewall surface of the first cam groove GV1, defining the extension direction of the first cam groove GV1. When the first cylindrical portion 161A is attached to the rotating shaft 11, the outer circumferential surface of the first small-diameter portion P12 is inclined relative to the rotating shaft 11 at an inclination angle C. The outer circumferential surface of the first small-diameter portion P12 forms the bottom surface of the first cam groove GV1. As a result, the first cam groove GV1 is eccentric relative to the rotating shaft 11, and both its extension direction and bottom surface are inclined relative to the rotating shaft 11.

[0098] Furthermore, as shown in Figures 5, 9, and 10, the first body 121A of the first treatment arm 12A has a first through-hole TH1, through which the first small-diameter portion P12 of the first barrel 161A passes, and whose shape matches the first cam groove GV1. The first treatment arm 12A is inserted into the first cam groove GV1 via its first through-hole TH1. The first barrel 161A (specifically, the first large-diameter portion P11) and the first cover 162A define the ends of the first small-diameter portion P12 from either side of the extending direction of the rotation shaft 11, thereby forming the first cam groove GV1.

[0099] (Second treatment arm and its supporting structure)

[0100] As described above, the second treatment arm 12B includes the second body 121B provided with the second massage part 1211B and the second restricted part 1212B fixed to the second body 121B.

[0101] Here, as shown in Figures 5 to 7 and 11, the second body 121B has a second extension, namely a second plate-shaped portion 1219B, extending in a direction intersecting the rotation axis 11. A second massage portion 1211B is provided at the end of the second plate-shaped portion 1219B opposite the guide groove 2221. The radial dimension of the second body 121B in the rotation axis 11 is larger than that of the first body 121A in the rotation axis 11.

[0102] Furthermore, as shown in Figure 11 , the second massage part 1211B is integrally formed with the second body 121B. Similar to the first massage part 1211A, the portion of the second massage part 1211B that contacts the treatment area is spherical. However, the shape of the second massage part 1211B differs from that of the first massage part 1211A. As shown in Figure 6 , similar to the first massage part 1211A, the motion trajectory T2 of the second massage part 1211B is formed as a closed shape, with a larger span in the direction of the rotation axis 11 than in the radial direction of the rotation axis 11. However, the motion trajectory T2 of the second massage part 1211B differs from the motion trajectory T1 of the first massage part 1211A. Furthermore, a plurality of second massage parts 1211B are arranged along the extension direction of the second plate-shaped portion 1219B.

[0103] Furthermore, as shown in FIG11 , the second restricted portion 1212B is integrally formed with the second body 121B. The second restricted portion 1212B protrudes from the second body 121B in a direction away from the second massage portion 1211B. Furthermore, as shown in FIG5 , the second restricted portion 1212B is a cylindrical protrusion (also referred to as a pin) that protrudes from the second body 121B toward the guide groove 2221.

[0104] In addition, as shown in Figures 5 to 8, the second treatment arm 12B is supported on the rotating shaft 11 eccentrically and obliquely relative to the rotating shaft 11 via the second cam component 16B (in the state of Figure 6, the first treatment arm 12A and the second treatment arm 12B are roughly formed into an eight-shaped shape). The second cam component 16B includes a second barrel 161B and a second cover 162B that are sleeved on the rotating shaft 11. The second barrel 161B is fixed to the rotating shaft 11 and has a second large diameter portion P21 arranged along the extension direction of the rotating shaft 11 and a second small diameter portion P22 with an outer diameter smaller than the second large diameter portion P21. The second cover 162B has an outer diameter larger than the second small diameter portion P22. The second cover 162B is assembled to the second barrel 161B from the side opposite to the second large diameter portion P21 relative to the second small diameter portion P22. The end surface of the second large diameter portion P21 located on the side of the second small diameter portion P22 is not orthogonal to the extension direction of the rotation axis 11, and the angle D formed by the two is less than 90 degrees. The end surface of the second cover portion 162B located on the side of the second small diameter portion P22 forms an angle E with the extension direction of the rotation axis 11 that is also less than 90 degrees. In this embodiment, angle D is consistent with angle E (in the example shown in the figure, angle D is the same as angle A). That is, the end surface of the second large diameter portion P21 located on the side of the second small diameter portion P22 and the end surface of the second cover portion 162B located on the side of the second small diameter portion P22 are opposite and parallel to each other, and both have the same inclination angle relative to the rotation axis 11. The end surface of the second large diameter portion P21 located on the side of the second small diameter portion P22 and the end surface of the second cover portion 162B located on the side of the second small diameter portion P22 form the side wall surface of the second cam groove GV2, which defines the extension direction of the second cam groove GV2. When the second cylindrical portion 161B is attached to the rotating shaft 11, the outer circumferential surface of the second small-diameter portion P22 is inclined relative to the rotating shaft 11 at an inclination angle F (in the illustrated example, angle F is the same as angle C). The outer circumferential surface of the second small-diameter portion P22 forms the bottom surface of the second cam groove GV2. As a result, the second cam groove GV2 is eccentric relative to the rotating shaft 11, and both its extension direction and bottom surface are inclined relative to the rotating shaft 11.

[0105] Furthermore, as shown in Figures 5 and 11 , the second body 121B of the second treatment arm 12B has a second through-hole TH2, through which the second small-diameter portion P22 of the second barrel 161B passes, and whose shape matches the second cam groove GV2. The second treatment arm 12B is inserted into the second cam groove GV2 via its second through-hole TH2. The second barrel 161B (specifically, the second large-diameter portion P21) and the second cover 162B define the ends of the second small-diameter portion P22 from both sides in the extension direction of the rotation shaft 11, thereby forming the second cam groove GV2.

[0106] (Structure of the guide groove)

[0107] As described above, the guide groove 2221 restricts the first treatment arm 12A and the second treatment arm 12B from rotating irregularly along with the rotation of the rotation shaft 11 .

[0108] 5 , the guide groove 2221 includes a first guide groove 2221A for inserting the first restricted portion 1212A and a second guide groove 2221B for inserting the second restricted portion 1212B. When the rotary shaft 11 rotates, the top ends of the first restricted portion 1212A and the second restricted portion 1212B move in an arc shape within the first guide groove 2221A and the second guide groove 2221B.

[0109] 5 , the first guide groove 2221A and the second guide groove 2221B are located on both sides of the retaining seat 14 in the extending direction of the rotation shaft 11 .

[0110] Here, taking the first guide groove 2221A as an example, the structure of the guide groove is explained, and the synergy between the guide groove and the restricted portion is explained. As shown in Figure 5, the first guide groove 2221A extends parallel to the rotating shaft 11, that is, the length direction of the first guide groove 2221A is consistent with the extension direction of the rotating shaft 11. The first restricted portion 1212A can slide along the length direction of the first guide groove 2221A. The groove width direction of the first guide groove 2221A intersects with the extension direction of the rotating shaft 11, and is orthogonal in this embodiment. The size of the groove width of the first guide groove 2221A is roughly consistent with the size of the first restricted portion 1212A in this direction. The first restricted portion 1212A can slide along the length direction of the first guide groove 2221A, but cannot slide in the width direction of the first guide groove 2221A. In this embodiment, because the width of the first guide groove 2221A is orthogonal to the extension direction of the rotating shaft 11, that is, located in the circumferential direction of the rotating shaft 11, the movement of the first restricted portion 1212A in the circumferential direction of the rotating shaft 11 is regulated. When the first treatment arm 12A rotates with the rotating shaft 11 via the eccentric cam structure, it does not cause circumferential movement of the rotating shaft 11. At this time, the first restricted portion 1212A moves along the arc-shaped motion trajectory T3 shown in Figure 6.

[0111] In addition, as shown in Figure 5, the groove depth direction of the first guide groove 2221A is in the radial direction of the rotating shaft 11. The first restricted portion 1212A is inserted into the first guide groove 2221A. The first guide groove 2221A restricts the movement of the first restricted portion 1212A in the groove width direction, but allows the first restricted portion 1212A to move in the groove length direction and the groove depth direction. The depth of the first guide groove 2221A in the groove depth direction is greater than the movement distance of the first restricted portion 1212A in the radial direction of the rotating shaft 11 as the rotating shaft 11 rotates. In this embodiment, the first guide groove 2221A is a through groove, so that there is no need to overly consider the dimensional relationship between the groove depth and the first restricted portion 1212A, which can increase the degree of freedom during assembly.

[0112] (Structure of the driving mechanism)

[0113] As shown in FIG. 5 , FIG. 7 and FIG. 8 , the driving mechanism 13 includes a motor 131 and a transmission mechanism 132 .

[0114] 5 , the motor 131 is disposed between the first treatment arm 12A and the second treatment arm 12B in the direction in which the rotation shaft 11 extends, and extends perpendicularly to the rotation shaft 11. The motor 131 includes a motor housing 1311 connected to the holder 14, and a drive shaft 1312 rotatably supported by the motor housing 1311, the drive shaft 1312 extending perpendicularly to the rotation shaft 11.

[0115] In addition, as shown in Figures 7 and 8, the transmission mechanism 132 transmits the driving force of the motor 131 to the rotating shaft 11 to rotate the rotating shaft 11. The transmission mechanism 132 includes a turbine 1321. The turbine 1321 is mounted on the middle portion of the rotating shaft 11 (in the example shown, it is the portion located between the first bearing 151A and the second bearing 152A), is accommodated by the retaining seat 14, and engages with the thread formed on the outer peripheral surface of the drive shaft 1312, thereby transmitting the driving force of the motor 131 to the rotating shaft 11. In addition, the first treatment arm 12A and the second treatment arm 12B protrude in a direction away from the guide groove 2221 relative to the transmission mechanism 132.

[0116] (Structure of the retaining seat)

[0117] As described above, the retaining seat 14 is fixed to the support body 2 .

[0118] Here, as shown in Fig. 5 , the retaining seat 14 is fixed from above to the support body 2. In the present embodiment, the retaining seat 14 is fixed to a portion of the support plate 21 that protrudes inward from the first cover 22 in the shoulder width direction.

[0119] 5 , the holder 14 is an annular housing that surrounds the middle portion of the extending direction of the rotating shaft 11. As shown in FIG7 , the holder 14 rotatably supports the rotating shaft 11 via a first bearing 151A and a second bearing 152A.

[0120] 3) Specific structure of the force-applying part

[0121] In this embodiment, the force-applying unit S3 drives the movable unit S2 to reciprocate between a retracted position and an extended position in the left-right direction. The force-applying unit S3 is located between the movable unit S2 and the connecting arm 92 of the fixed unit S1. The left and right ends of the force-applying unit 3 are respectively connected to the connecting arm 92 of the movable unit S2 and the fixed unit S1.

[0122] Here, as shown in FIG. 5 , the biasing portion S3 includes a telescopic member 80 that reciprocates the moving portion S2 by telescoping.

[0123] 5 , the telescopic member 80 includes an elastic member 81 disposed between the fixed portion S1 and the movable portion S2 and biasing the movable portion S2 toward the outside in the shoulder width direction. In this embodiment, the elastic member 81 is a coil spring (in the illustrated example, a tension coil spring), one end of which is connected to the support body 2 of the movable portion S2 and the other end of which is connected to the base 91 of the fixed portion S1 (in the illustrated example, the side plate 912). A pair of elastic members 81 are provided at intervals in the front-to-back direction (in the illustrated example, the elastic members 81 are located between the guide rail 913 and the reinforcing plate 915 in the front-to-back direction).

[0124] Furthermore, as shown in FIG5 , the telescopic member 80 includes an airbag 82, which is disposed between the fixed portion S1 and the movable portion S2 and connected to the fixed portion S1. The front-to-back ends of the airbag 82 are respectively connected to the connecting arms 92 of the fixed portion S1. When inflated, the airbag 82 expands inwardly in the shoulder width direction, supported by the connecting arms 92 fixed in the left-right direction, thereby applying force to the movable portion S2. In this embodiment, two airbags 82 are arranged in the shoulder width direction. Multiple airbags 82 may also be provided. For example, the airbags 82 may be fixedly connected to each other in a breathable manner and arranged in the left-to-right direction. The front-to-back ends of the inner airbag 82 are connected to the movable portion S2, while the front-to-back ends of the outer airbag 82 are connected to the connecting arms 92 of the fixed portion S1. Thus, even when multiple airbags 82 are provided, it is easy to control the expansion direction of the multiple airbags 82 as a whole, ensuring that the multiple airbags 82 push the movable portion S2 in the desired left-to-right direction when inflated.

[0125] 4) Specific structure of the detection unit

[0126] As described above, the detection unit S4 detects the position of the moving unit S2 relative to the fixed unit S1.

[0127] Here, as shown in Figures 4A, 4B and 5, the detection part S4 includes a detected element 71 and a detection element 72. The detected element 71 is provided on one side of the fixed part S1 and the movable part S2, and the detection element 72 is provided on the other side of the fixed part S1 and the movable part S2. In this embodiment, the detected element 71 is a magnet and is provided on the base 91 of the fixed part S1 (the bottom plate 911 in the example shown in the figure). The detection element 72 is a Hall element (provided on a circuit board in the example shown in the figure) and is provided on the support body 2 of the movable part S2 (in the example shown in the figure, the inside of the first cover 22).

[0128] In this embodiment, detection elements 72 are provided at two locations within the first cover 22. The detection elements 72 provided at the two locations correspond to the retracted position and the extended position of the movable portion S2, respectively, and can detect whether the movable portion S2 is in the retracted position (see FIG. 4A ) or the extended position (see FIG. 4B ).

[0129] -Overview of Massage Machine's Movements-

[0130] In this embodiment, when the shoulder treatment unit S is in the standby state, for example, before the person being treated sits on the massage machine A, the movable part S2 is retracted relative to the fixed part S1 by the force applying part S3.

[0131] In the above state, the person being treated sits on the massage machine A, and then the massage machine A is turned on.

[0132] At this time, if the shoulder treatment unit S is activated, the control unit controls the force-applying unit S3, which applies a force to the movable unit S2 inward in the left-right direction. As a result, the movable unit S2 moves inward in the shoulder width direction relative to the fixed unit S1. Specifically, in this embodiment, by inflating the airbag 82, the airbag 82 expands, increasing the distance between the movable unit S2 and the connecting arm 92, thereby reducing the left-right distance between the left and right treatment components 1. In other words, the treatment component 1 moves inward along the width of the patient's shoulders.

[0133] When the movable portion S2 moves inward relative to the fixed portion S1 in the shoulder width direction, the detection portion S4 detects that the movable portion S2 has reached a predetermined position, and the control portion stops further movement of the movable portion S2 via the force-applying portion S3 (for example, by maintaining the pressure within the airbag 82 at a constant value). Furthermore, as the movable portion S2 moves inward from the retracted position in the shoulder width direction, the protrusion 24 slides along the groove 9131, thereby also providing an upper limit to the movement distance of the movable portion S2 through the movement limiting structure.

[0134] The control unit then activates the motor 131, causing the first and second massage parts 1211A, 1211B to repeatedly approach and then separate from each other. Specifically, when approaching each other, the first and second massage parts 1211A, 1211B approach the treatment area from either side, each applying a force toward the other from its own side, gradually clamping the treatment area. When the first and second massage parts 1211A, 1211B approach and then separate, they each move away from their closest position. In this way, massage is performed by repeatedly approaching and separating from each other.

[0135] After the treatment is completed, the control unit controls the biasing portion S3 (specifically, by deflation of the airbag 82 ), whereby the movable portion S2 moves outward in the shoulder width direction relative to the fixed portion S1 .

[0136] According to the massage machine A of this embodiment, the shoulder treatment unit S includes: a fixed part S1, which is connected and fixed to the frame J; a movable part S2, which has a treatment component 1, is supported on the frame J via the fixed part S1, and can move along the shoulder width direction relative to the fixed part S1; and a force-applying part S3, which drives the movable part S2 to move back and forth. Therefore, when the person being treated stands up after the treatment is completed, the force-applying part S3 is used to move the movable part S2 toward the outside in the shoulder width direction, which can prevent the movable part S2 having the treatment component 1 from interfering with the shoulders of the person being treated, making it easier for the person being treated to stand up.

[0137] In addition, according to the massage machine A of this embodiment, in the shoulder treatment unit S, the first treatment arm 12A includes: a first main body 121A provided with a first massage portion 1211A; and a first restricted portion 1212A fixed relative to the first main body 121A, the guide groove 2221 cooperates with the first restricted portion 1212A, thereby restricting the first restricted portion 1212A from moving in the circumferential direction of the rotating shaft 11, but allowing the first restricted portion 1212A to move in the radial direction of the rotating shaft 11 and in the extension direction of the rotating shaft 11. Movement, the second treatment arm 12B includes: a second main body 121B provided with a second massage part 1211B; and a second restricted part 1212B fixed relative to the second main body 121B, the guide groove 2221 cooperates with the second restricted part 1212B, thereby limiting the circumferential movement of the second restricted part 1212B in the rotating shaft 11, but allowing the second restricted part 1212B to move in the radial direction of the rotating shaft 11 and the extension direction of the rotating shaft 11, thereby helping to simplify the overall structure and reduce manufacturing costs.

[0138] The present invention is described above by way of example with reference to the accompanying drawings. It is apparent that the specific implementation of the present invention is not limited to the above-mentioned embodiments.

[0139] For example, in the above embodiment, the massage machine A is a massage chair, but the present invention is not limited thereto and may be another device such as a massage bed.

[0140] Furthermore, in the above-described embodiment, a pair of shoulder treatment units S are provided in the shoulder width direction, but the present invention is not limited thereto, and only one may be provided depending on circumstances.

[0141] Furthermore, in the above embodiment, the shoulder treatment unit S may be configured to be movable up and down relative to the frame J. For example, the fixing portion S1 and the frame J may be connected via a sliding rail.

[0142] Furthermore, in the above embodiment, the telescopic member 80 includes the elastic member 81 and the airbag 82 , but the present invention is not limited thereto. An air cylinder or the like may be used instead of the elastic member 81 and the airbag 82 .

[0143] In the above embodiment, the urging portion S3 includes the telescopic member 80 that reciprocates the moving portion S2 by telescoping. However, the present invention is not limited thereto and the urging portion S3 may include a stepping motor or the like instead of the telescopic member 80 .

[0144] In addition, in the above embodiment, the eccentricity of the first treatment arm 12A relative to the rotating shaft 11 is the same as the eccentricity of the second treatment arm 12B relative to the rotating shaft 11, but it is not limited to this. It can also be set that the eccentricity of the first treatment arm 12A relative to the rotating shaft 11 is different from the eccentricity of the second treatment arm 12B relative to the rotating shaft 11.

[0145] In addition, in the above embodiment, angle A is the same as angle D, that is, the inclination amount of the first treatment arm 12A relative to the rotation axis 11 is the same as the inclination amount of the second treatment arm 12B relative to the rotation axis 11, but it is not limited to this. It can also be set to be different from angle A and angle D, that is, the inclination amount of the first treatment arm 12A relative to the rotation axis 11 is different from the inclination amount of the second treatment arm 12B relative to the rotation axis 11.

[0146] Furthermore, in the above embodiment, the portions of the massage part of the first treatment arm 12A and the massage part of the second treatment arm 12B that come into contact with the treatment part are spherical, but the present invention is not limited thereto and can be modified as needed.

[0147] In addition, in the above embodiment, the first restricted portion 1212A is formed integrally with the first main body 121A, and the second restricted portion 1212B is formed integrally with the second main body 121B, but it is not limited to this. The first restricted portion 1212A can also be formed separately from the first main body 121A and connected and fixed to each other, and the second restricted portion 1212B can also be formed separately from the second main body 121B and connected and fixed to each other.

[0148] Furthermore, in the above embodiment, the movement trajectory of the second massage part 1211B may be the same as the movement trajectory of the first massage part 1211A.

[0149] Furthermore, in the above embodiment, the second massage part 1211B may have the same shape as the first massage part 1211A.

[0150] Furthermore, in the above embodiment, the shapes of the first body 121A and the second body 121B are not limited to those shown in the drawings, and can be modified as needed.

[0151] Furthermore, in the above embodiment, the motor 131 is disposed between the first treatment arm 12A and the second treatment arm 12B in the extending direction of the rotating shaft 11 , but the present invention is not limited thereto, and the location of the motor 131 may be adjusted appropriately depending on the situation.

[0152] In addition, in the above embodiment, the first treatment arm 12A and the second treatment arm 12B are respectively eccentric and inclined relative to the rotation axis 11, but this is not limited to this. Only one of the first treatment arm 12A and the second treatment arm 12B can be set to be eccentric and inclined relative to the rotation axis 11.

[0153] In addition, in the above embodiment, the first treatment arm 12A is in contact with the shoulder from the front side of the person being treated to perform massage, and the second treatment arm 12B is in contact with the shoulder from the back side of the person being treated to perform massage, but it is not limited to this. It can also be set up so that the first treatment arm 12A is in contact with the shoulder from the back side of the person being treated to perform massage, and the second treatment arm 12B is in contact with the shoulder from the front side of the person being treated to perform massage.

[0154] In addition, in the above embodiment, the treatment component 1 is set in a manner that the axial direction of the motor 131 is consistent with the shoulder width direction of the person being treated, but it is not limited to this. The treatment component 1 can also be set in a manner that the axial direction of the motor 131 intersects with the shoulder width direction of the person being treated.

[0155] Furthermore, in the above embodiment, as shown in FIG. 12 and FIG. 13 , the size of the motor 131 may be appropriately selected as needed.

[0156] Furthermore, in the above embodiment, the detection unit S4 detects the position of the moving unit S2 relative to the fixed unit S1 , but the present invention is not limited thereto. The detection unit S4 may also be configured to detect the relative position between the left and right moving units S2 .

[0157] It should be understood that within the scope of the present invention, various parts in the embodiments can be freely combined, or various parts in the embodiments can be appropriately modified or omitted.

Claims

1. A treatment institution, characterized in that, Comprising: A rotating shaft; A first treatment arm and a second treatment arm, the first treatment arm and the second treatment arm being spaced apart and rotatably provided on the rotating shaft, and having massage parts for massaging a treatment part in a manner of approaching each other, at least one of the first treatment arm and the second treatment arm being eccentric and inclined relative to the rotating shaft; And A restricting part that restricts the rotation of the first treatment arm and the second treatment arm as the rotating shaft rotates, At least one of the first treatment arm and the second treatment arm includes: a main body provided with the massage part; and a restricted part fixed relative to the main body, The restricting part cooperates with the restricted part to restrict the movement of the restricted part in the circumferential direction of the rotating shaft, but allows the restricted part to move in the radial direction of the rotating shaft and the extending direction of the rotating shaft.

2. The treatment mechanism according to claim 1, wherein In at least one of the first treatment arm and the second treatment arm, the restricted part is integrally formed with the main body.

3. The treatment mechanism according to claim 1, wherein The restricting part has a guiding groove, The guiding groove extends parallel to the rotating shaft and is for inserting the restricted part, The guiding groove restricts the movement of the restricted part in the groove width direction, but allows the restricted part to move in the groove length direction and the groove depth direction.

4. The treatment mechanism according to claim 1, wherein The movement trajectories of the massage parts of the first treatment arm and the second treatment arm are different.

5. The treatment mechanism according to claim 1, wherein The shapes of the massage parts of the first treatment arm and the second treatment arm are different.

6. The treatment mechanism according to claim 1, wherein The first treatment arm and the second treatment arm respectively include a main body and a restricted part fixed relative to the main body, The massage part of the first treatment arm is detachably provided on the main body of the first treatment arm.

7. The treatment mechanism according to claim 1, wherein At least one of the massage parts of the first treatment arm and the second treatment arm that contacts the treatment part is spherical.

8. The treatment mechanism according to claim 1, wherein A plurality of massage parts of the second treatment arm are arranged in a straight line.

9. The treatment mechanism according to claim 1, wherein The first treatment arm and the second treatment arm are respectively eccentric and inclined relative to the rotating shaft, The eccentricity of the first treatment arm relative to the rotating shaft is different from the eccentricity of the second treatment arm relative to the rotating shaft, and / or, the inclination of the first treatment arm relative to the rotating shaft is different from the inclination of the second treatment arm relative to the rotating shaft.

10. The treatment mechanism according to claim 1, wherein It further includes a motor, The motor drives the rotating shaft to rotate, and is arranged between the first treatment arm and the second treatment arm in the extending direction of the rotating shaft and extends perpendicular to the rotating shaft.

11. The treatment institution according to claim 1, characterized in that the first treatment arm includes a first main body and a first restricted part fixed relative to the first main body, the second treatment arm includes a second main body and a second restricted part fixed relative to the second main body, the first main body has a first plate-like part extending across the rotation axis, a protrusion protruding toward the second treatment arm is formed at an end of the first plate-like part opposite to the restricted part, and a first massage part is provided at the front end of the protrusion, the second main body has a second plate-like part extending across the rotation axis, a second massage part is provided at an end of the second plate-like part opposite to the restricted part.

12. A massage machine, characterized in that, Having the treatment institution according to any one of claims 1 to 11.

13. The massage machine according to claim 12, characterized in that it has a frame and a shoulder treatment unit, the shoulder treatment unit includes: a fixing part which is fixedly connected to the frame; a moving part which has the treatment institution, is supported by the frame via the fixing part, and can move relative to the fixing part in the shoulder width direction; and a force applying part which drives the moving part to reciprocate.

14. The massage machine according to claim 13, characterized in that the force applying part has a telescopic member which makes the moving part reciprocate by telescoping.

15. The massage machine according to claim 14, characterized in that the telescopic member includes an elastic member, the elastic member is provided between the fixing part and the moving part, and applies a force to the moving part toward the outside in the shoulder width direction.

16. The massage machine according to claim 14, characterized in that the telescopic member includes an airbag, the airbag is provided between the fixing part and the moving part, and applies a force to the moving part toward the inside in the shoulder width direction when inflated.

17. The massage machine according to claim 13, characterized in that the fixing part has a guide rail which extends in the shoulder width direction, the moving part has a slider which engages with the guide rail in a manner capable of sliding relative to the guide rail.

18. The massage machine according to claim 17, characterized in that the slider has: an upper abutting part which abuts against the guide rail from above; and a lower abutting part which abuts against the guide rail from below.

19. The massage machine according to claim 13, characterized in that a movement restricting structure is provided between the moving part and the fixing part.

20. The massage machine according to claim 13, characterized in that the shoulder treatment unit includes a detection part, the detection part detects the movement of the moving part.

21. The massage machine according to claim 20, characterized in that the shoulder treatment unit includes a control part, the control part controls the operation of the force applying part according to the detection result of the detection part.

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