Massage module for massage machine

Abstract

The massage module for a massager of the present invention includes: a base; a first eccentric rotating component, including a first shaft portion rotatably disposed on one side of the upper portion of the base and first and second eccentric portions eccentrically connected to one and the other side thereto; a second eccentric rotating component, including a second shaft portion rotatably disposed on the other side of the upper portion of the base and third and fourth eccentric portions eccentrically connected to one and the other side thereto; a drive unit, providing rotational force to the first and second shaft portions to cause the first to fourth eccentric portions to rotate eccentrically; and first to fourth massage components, installed to correspond to the first to fourth eccentric portions and raised and lowered by the eccentric rotation of the first to fourth eccentric portions, wherein the first eccentric rotating component includes a first adjustment portion that adjusts the phases of the first and second eccentric portions to be the same or different according to the rotation direction of the drive unit, and the second eccentric rotating component includes a second adjustment portion that adjusts the phases of the third and fourth eccentric portions to be the same or different according to the rotation direction of the drive unit.

Description

Technical Field

[0001] This invention relates to a massage module for a massage machine, and more specifically, to a massage module for a massage machine capable of performing massage actions of the first to fourth massage components in various ways and achieving the same massage as actual manual therapy. Background Technology

[0002] In reality, most modern people suffer from various spinal diseases due to a variety of factors, including incorrect posture while studying or working, bad lifestyle habits, injuries caused by strenuous leisure activities, injuries caused by traffic accidents, insufficient exercise, and aging.

[0003] Spinal diseases commonly experienced by modern people include various conditions such as cervical / lumbar disc herniation (commonly known as cervical / lumbar disc herniation), spinal fractures, anterior vertebral dysplasia, spinal dysplasia, scoliosis, and cervical / lumbar strain. If these spinal diseases are not treated promptly, the pain can become very severe, significantly impacting daily life.

[0004] Therefore, the trend is towards developing and commercializing therapeutic devices with various forms and functions to prevent spinal diseases or alleviate or treat pain caused by spinal diseases at home. In particular, recently, a massage machine that can perform various physical or thermal therapies on the entire spine, including the cervical, thoracic, and lumbar vertebrae, while the user is lying down has gained attention through various media and is now available on the market.

[0005] Massage machines typically consist of a massage module housed within a bed-shaped main body. This massage module, equipped with massage components such as rollers, ceramic pads, or acupressure balls, is positioned within the main body to reciprocate linearly along its length. In such massage machines, the massage components, rising and falling with the operation of the massage module, stimulate the user's body, thereby providing a massage. Related prior art is published in Korean Patent Publication No. 10-0507738 (Prior Art 1) and Korean Patent Publication No. 10-1528980 (Prior Art 2).

[0006] In prior art 1, a thermotherapy device is disclosed, which divides a mat into a first mat and a second mat to stimulate the user's spinal meridians and acupoints. A track section, a surface heating element, and a "ㄈ"-shaped movable guide frame are arranged opposite to each other inside the second mat. The movable frame with movable wheels is freely arranged in the front-back direction on the width of the track section, the surface heating element, and the movable guide frame. Above the movable frame, there are multiple lamp-type acupressure balls that emit far-infrared rays and ultraviolet germicidal lamps that emit germicidal rays. A mobile acupressure frame that moves up and down is formed according to the load position of the user lying on the second mat. A movable shaft and elastic component are formed at each corner of the movable frame and the mobile acupressure frame to enable the mobile acupressure frame to move up and down.

[0007] However, in the case of this prior art 1, when a load is applied to the acupressure ball as a massage component according to the user's body shape, the moving frame and the acupressure ball supported by the movable acupressure frame of the elastic component can move, while the acupressure ball itself cannot move up and down.

[0008] According to the problem of prior art 1, prior art 2 discloses a ceramic lifting device for a thermotherapy instrument, which is configured to include a base plate, a first lifting component hinged to the base plate, a second lifting component hinged to the base plate, a drive unit disposed on the base plate and transmitting power for the lifting action of the first lifting component, an elastic component disposed between the first lifting component and the second lifting component, and a plurality of ceramic components disposed on the first and second lifting components.

[0009] In this prior art 2, the first lifting component rises and falls by being driven by a drive unit, and the ceramic component on the upper surface of the first lifting component rises and falls together with the first lifting component. However, in this case, the ceramic components arranged side by side on the first lifting component rise and fall together, so that only the areas arranged side by side with the user's middle spine as a reference can be massaged simultaneously. That is, in actual manual therapy performed by a physical therapist, the areas in the left and right diagonal directions are massaged simultaneously with the user's middle spine as a reference to correct spinal distortion or relax the erector spinae muscles, etc. However, prior art 2 can only massage the areas arranged side by side with the user's middle spine as a reference, so there is a problem that it is impossible to perform massage in a way similar to manual therapy performed by a physical therapist.

[0010] (Existing technical literature)

[0011] (Patent Documents)

[0012] Patent Document 1: Korean Patent KR10-0507738B1

[0013] Patent Document 2: Korean Patent KR10-1528980B1 Summary of the Invention

[0014] (The problem the invention aims to solve)

[0015] The present invention was created to solve the above-mentioned problems, and its purpose is to provide a massage module for a massage machine. This massage module can perform massage actions of the first to fourth massage components in various ways by adjusting the phase of the first to fourth eccentric parts by adjusting the first and second adjustment parts, and can achieve the same massage as in actual manual therapy.

[0016] (The measures taken to solve the problem)

[0017] The massage module for a massager of the present invention, which aims to solve the problems described above, includes: a base; a first eccentric rotating component, comprising a first shaft portion rotatably disposed on one upper side of the base, and a first eccentric portion and a second eccentric portion eccentrically connected to one and the other side of the first shaft portion; a second eccentric rotating component, comprising a second shaft portion rotatably disposed on the other upper side of the base, and a third eccentric portion and a fourth eccentric portion eccentrically connected to one and the other side of the second shaft portion; and a drive unit that provides rotational force to the first shaft portion and the second shaft portion. The first to fourth eccentric portions are eccentrically rotated; and the first to fourth massage components are installed to correspond to the first to fourth eccentric portions and are raised and lowered by the eccentric rotation of the first to fourth eccentric portions. The first eccentric rotating component includes a first adjustment part that adjusts the phases of the first and second eccentric portions to be the same or different according to the rotation direction of the drive unit. The second eccentric rotating component includes a second adjustment part that adjusts the phases of the third and fourth eccentric portions to be the same or different according to the rotation direction of the drive unit.

[0018] Furthermore, in the massage module for the massage machine of the present invention, in the initial state before the drive unit operates, the first eccentric portion and the second eccentric portion are arranged in front and behind each other with the same phase, and the third eccentric portion and the fourth eccentric portion are arranged in front and behind each other with the same phase and located on the sides of the first eccentric portion and the second eccentric portion. In the initial state, when the drive unit rotates in one direction, the first adjustment unit causes the other eccentric portion to rotate eccentrically after any one of the first eccentric portion and the second eccentric portion rotates eccentrically by a certain angle. Similarly, the second adjustment unit causes the other eccentric portion to rotate eccentrically after any one of the third eccentric portion and the fourth eccentric portion rotates eccentrically by a certain angle.

[0019] Furthermore, in the massage module for the massage machine of the present invention, when the drive unit rotates in one direction, the first and fourth eccentric portions located in diagonal directions, as well as the second and third eccentric portions located in diagonal directions, cause the first and fourth massage components and the second and third massage components to alternately perform massage under the alternating lifting and lowering action of the first and second adjustment portions.

[0020] Furthermore, in the massage module for the massage machine of the present invention, when the drive unit rotates in another direction, the first to fourth eccentric portions can return to the initial state.

[0021] Furthermore, in the massage module for the massage machine of the present invention, when the drive unit rotates in another direction, the first to fourth eccentric portions can rise and fall together at the same height after returning to the initial state.

[0022] Furthermore, in the massage module for the massage machine of the present invention, the first adjustment part includes: a first adjustment pin that protrudes from the outer peripheral surface of the first shaft and rotates together with the first shaft; and a first adjustment groove formed on one surface of the second eccentric part to accommodate the first adjustment pin and allow the first adjustment pin to rotate freely at a first angle. The second adjustment part includes: a second adjustment pin that protrudes from the outer peripheral surface of the second shaft and rotates together with the second shaft; and a second adjustment groove formed on one surface of the third eccentric part to accommodate the second adjustment pin and allow the second adjustment pin to rotate freely at a second angle.

[0023] Furthermore, in the massage module for a massage machine of the present invention, the first shaft portion includes: a first front shaft; a first central shaft, which is spaced apart and disposed behind the first front shaft and connected to the first front shaft via the first eccentric portion; and a first rear shaft, which is spaced apart and disposed behind the first central shaft and connected to the first central shaft via the second eccentric portion. The second shaft portion includes: a second front shaft, which is disposed to the right of the first front shaft; and a second central shaft, which is spaced apart and disposed behind the second front shaft and connected to the first central shaft via the first eccentric portion. The third eccentric portion is connected to the second front shaft; and the second rear shaft is spaced apart and disposed behind the second central shaft and connected to the second central shaft via the fourth eccentric portion. The first central shaft includes: a first dividing shaft connected to the first eccentric portion; and a second dividing shaft divided from the first dividing shaft and connected to the second eccentric portion. The second central shaft includes: a third dividing shaft connected to the third eccentric portion; and a fourth dividing shaft divided from the third dividing shaft and connected to the fourth eccentric portion.

[0024] Furthermore, in the massage module for the massage machine of the present invention, the first adjustment part includes: a first adjustment protrusion formed on the back side of the first dividing shaft; and a second adjustment protrusion formed on the front side of the second dividing shaft and capable of engaging or disengaging with the first adjustment protrusion as the second dividing shaft rotates. The second adjustment part includes: a third adjustment protrusion formed on the back side of the third dividing shaft; and a fourth adjustment protrusion formed on the front side of the fourth dividing shaft and capable of engaging or disengaging with the third adjustment protrusion as the third dividing shaft, which is linked to the second dividing shaft, rotates.

[0025] Furthermore, in the massage module for the massager of the present invention, a mounting bracket is connected to the upper part of the base, and the first eccentric rotating component and the second eccentric rotating component are rotatably mounted on the mounting bracket.

[0026] Furthermore, in the massage module for the massager of the present invention, a posture holding unit is connected to the aforementioned bracket, and the first to fourth massage components can be guided by the posture holding unit to rise and fall in a state that maintains a certain posture.

[0027] Furthermore, in the massage module for the massage machine of the present invention, the posture holding unit includes: a first guide member and a second guide member, which are connected to the upper part of the mounting bracket in a rear-to-rear spaced manner; a first restraint member, which is accommodated on the left side of the first guide member and can move left and right to restrain the first massage member into a certain posture; a second restraint member, which is accommodated on the left side of the second guide member and can move left and right to restrain the second massage member into a certain posture; a third restraint member, which is accommodated on the right side of the first guide member and can move left and right to restrain the third massage member into a certain posture; a fourth restraint member, which is accommodated on the right side of the second guide member and can move left and right to restrain the fourth massage member into a certain posture; a first cover plate, which is connected to the upper part of the first guide member to guide the first massage member and the third massage member; and a second cover plate, which is connected to the upper part of the second guide member to guide the second massage member and the fourth massage member.

[0028] Furthermore, in the massage module for the massage machine of the present invention, each of the first to fourth massage components includes: an insert ring that is inserted into corresponding to the first to fourth eccentric portions; a connecting portion that protrudes vertically upward from the outer peripheral surface of the first insert ring; a roller bracket that is connected to the upper end of the connecting portion; and a roller that is rotatably connected to the roller bracket and can directly apply pressure to the massage area. The connecting portions of each of the first to fourth massage components are inserted into the corresponding first to fourth constraint components and supported in a vertical state.

[0029] Furthermore, in the massage module for the massager of the present invention, the posture holding unit includes: a first guide plate to a fourth guide plate, which are connected to the upper surface of the mounting plate of the mounting bracket and spaced apart in the front-rear direction; a first support body and a third support body, the lower parts of which are slidably constrained by the first and second guide plates and arranged side by side and inserted into the lower parts of the first massage member and the third massage member; and a second support body and a fourth support body, the lower parts of which are slidably constrained by the third and fourth guide plates and arranged side by side and inserted into the lower parts of the second massage member and the fourth massage member.

[0030] (The effect of the invention)

[0031] The massage module for a massager of the present invention has the following advantages.

[0032] The massage module for the massage machine of the present invention can adjust the phases of the first eccentric part and the second eccentric part to be the same or different according to the rotation direction of the drive unit and through the first adjustment part, and can adjust the phases of the third eccentric part and the fourth eccentric part to be the same or different through the second adjustment part. Therefore, it has the advantage of being able to perform massage actions of the first massage component to the fourth massage component in various ways according to the rotation direction of the drive unit.

[0033] The massage module of the massage machine of the present invention performs massage actions by alternately raising and lowering the first and fourth massage components and the second and third massage components in the diagonal direction, thereby having the advantage of being able to specifically achieve the same massage as in actual manual therapy.

[0034] The massage module for the massage machine of the present invention has the advantage of being able to achieve various massage methods depending on the idle angle of the adjusting pin.

[0035] The massage module for a massager of the present invention can be configured with an adjustment part in a simple structure such as pins and slots, thus having the advantage of making the structure of the massage module very compact.

[0036] The massage module for the massager of the present invention can raise and lower the first massage component and the fourth massage component in a state that maintains a certain posture through the posture holding unit, thus having the advantage of preventing the first massage component and the fourth massage component from tilting. Attached Figure Description

[0037] Figure 1 This is a perspective view showing a massage module for a massage machine according to an embodiment of the present invention.

[0038] Figure 2 yes Figure 1 An exploded 3D diagram.

[0039] Figure 3 This is a right view showing the front part of the massage plate in a massage module for a massage machine according to an embodiment of the present invention being pressurized.

[0040] Figure 4 This is a right view showing the state in which the rear part of the massage plate in the massage module of a massage machine according to an embodiment of the present invention is pressurized.

[0041] Figure 5 This is an exploded perspective view showing a mounting bracket and attitude-maintaining unit according to an embodiment of the present invention.

[0042] Figure 6 This is a perspective view showing an eccentric rotating component and a massage component according to an embodiment of the present invention.

[0043] Figure 7 yes Figure 6 An exploded 3D diagram.

[0044] Figure 8 It is viewed from the rear side. Figure 7 An exploded 3D diagram.

[0045] Figure 9 This is a cross-sectional view showing a massage module for a massage machine according to an embodiment of the present invention, with the posture holding unit as the reference horizontal section.

[0046] Figure 10 (a) and (b) are top and right views showing the configuration (initial state) of the first and second eccentric rotating components and the first to fourth massage components of the massage module before the drive unit of an embodiment of the present invention is activated.

[0047] Figure 11 (a) is an illustrative representation of the relationship between the two. Figure 10 The front view of the first eccentric part connected to the first shaft and the third eccentric part connected to the second shaft. Figure 11 (b) is an illustrative representation of the relationship between the two. Figure 10 The front view of the third and second eccentric parts connected to the first shaft and the fourth eccentric part connected to the second shaft.

[0048] Figure 12 (a) and (b) are shown Figure 10 Top view and right view of (a) and (b) showing the first axis rotated 90 degrees counterclockwise and the second axis rotated 90 degrees clockwise.

[0049] Figure 13 (a) is an illustrative representation of the relationship between the two. Figure 12 The front view of the first eccentric part connected to the first shaft and the third eccentric part connected to the second shaft. Figure 13 (b) is an illustrative representation of the relationship between the two. Figure 12 The front view of the second eccentric part connected to the first shaft and the fourth eccentric part connected to the second shaft.

[0050] Figure 14 (a) and (b) are shown in Figure 12 Top view and right view of (a) and (b) showing the state where the first axis is rotated 90 degrees counterclockwise and the second axis is rotated 90 degrees clockwise.

[0051] Figure 15 (a) is an illustrative representation of the relationship between the two. Figure 14 The front view of the first eccentric part connected to the first shaft and the third eccentric part connected to the second shaft. Figure 15 (b) is an illustrative representation of the relationship between the two. Figure 14 The front view of the second eccentric part connected to the first shaft and the fourth eccentric part connected to the second shaft.

[0052] Figure 16 (a) and (b) are shown Figure 14 Top view and right view of (a) and (b) showing the state where the first axis is rotated 90 degrees counterclockwise and the second axis is rotated 90 degrees clockwise.

[0053] Figure 17 (a) is an illustrative representation of the relationship between the two. Figure 16 The front view of the first eccentric part connected to the first shaft and the third eccentric part connected to the second shaft. Figure 17 (b) is an illustrative representation of the relationship between the two. Figure 16 The front view of the second eccentric part connected to the first shaft and the fourth eccentric part connected to the second shaft.

[0054] Figure 18 This is a perspective view showing a massage module for a massage machine according to another embodiment of the present invention.

[0055] Figure 19 yes Figure 18 An exploded 3D diagram.

[0056] Figure 20 This is a right view showing the massage board of another embodiment of the present invention in a state of descent under the action of the lifting unit.

[0057] Figure 21 This is a right view showing the massage board of another embodiment of the present invention in a raised state under the action of the lifting unit.

[0058] Figure 22 This is an exploded perspective view showing a mounting bracket and attitude-maintaining unit according to another embodiment of the present invention.

[0059] Figure 23 This is a perspective view showing an eccentric rotating component and a massage component according to another embodiment of the present invention.

[0060] Figure 24 It is Figure 23 The exploded perspective view shown is an exploded view of the eccentric rotating component.

[0061] Figure 25 This is a perspective view schematically illustrating the configuration (initial state) of the first and second eccentric rotating components and the first to fourth massage components of the massage module before the drive unit of another embodiment of the present invention is activated.

[0062] Figure 26 (a) is shown Figure 25 A cross-sectional view of the first adjustment part in the middle. Figure 26 (b) shows Figure 25 A cross-sectional view of the second adjustment section.

[0063] Figure 27 It is an illustrative representation of the situation in Figure 25 A three-dimensional diagram showing the state in which the second eccentric part has rotated 90 degrees counterclockwise and the third eccentric part has rotated 90 degrees clockwise.

[0064] Figure 28 (a) is shown Figure 27 A cross-sectional view of the first adjustment part in the middle. Figure 28 (b) shows Figure 27 A cross-sectional view of the second adjustment section.

[0065] Figure 29 It is an illustrative representation of the situation in Figure 27 A three-dimensional diagram showing the state in which the second eccentric part has rotated 90 degrees counterclockwise and the third eccentric part has rotated 90 degrees clockwise.

[0066] Figure 30 (a) is shown Figure 29 A cross-sectional view of the first adjustment part in the middle. Figure 30 (b) shows Figure 29 A cross-sectional view of the second adjustment section.

[0067] Figure 31 It is an illustrative representation of the situation in Figure 29 A three-dimensional diagram showing the state in which the second eccentric part has rotated 90 degrees counterclockwise and the third eccentric part has rotated 90 degrees clockwise.

[0068] Figure 32 (a) is shown Figure 31 A cross-sectional view of the first adjustment part in the middle. Figure 32 (b) shows Figure 31 A cross-sectional view of the second adjustment section.

[0069] (Explanation of reference numerals in the attached diagram)

[0070] 1. 1000—Massage module for massage machine; 10. 1010—Base; 100. 1100—Base plate; 200. 1200—Lifting unit; 300. 1300—Massage plate; 400. 1400—Setting bracket; 500. 1500—Drive unit; 600. 1600—First eccentric rotating component; 610. 1610—First shaft; 640. 1650—First eccentric part; 650. 166 0—Second eccentric part; 700, 1700—Second eccentric rotating component; 710, 1710—Second shaft part; 740, 1750—Third eccentric part; 750, 1760—Fourth eccentric part; 810, 1810—First massage component; 820, 1820—Second massage component; 830, 1830—Third massage component; 840, 1840—Fourth massage component; 900, 1900—Posture holding unit. Detailed Implementation

[0071] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0072] For reference, for structures in the various components of the present invention described below that are identical to those in the prior art, reference will be made to the prior art described above and separate detailed descriptions will be omitted.

[0073] The technical terms used herein are for reference only to specific embodiments and are not intended to limit the invention. A single shape as used herein includes multiple shapes unless the meaning is clearly contrary to the intended meaning. The word "comprising" as used herein is intended to embody a particular feature, region, integer, step, action, element, and / or component, and does not exclude the presence or addition of other particular features, regions, integers, steps, actions, elements, components, and / or groups.

[0074] When referring to a constituent element being "connected" or "in contact" with another constituent element, although it may be directly connected or in contact with the other constituent element, it should be understood that there may be other constituent elements between them. Conversely, when referring to a constituent element being "directly connected" or "directly in contact" with another constituent element, it should be understood that there are no other constituent elements between them.

[0075] The following describes a massage module for a massage machine according to an embodiment of the present invention.

[0076] Reference Figure 1 , Figure 1This is a perspective view showing a massage module 1 (hereinafter referred to as "massage module") for a massage machine according to an embodiment of the present invention. Figure 2 yes Figure 1 An exploded 3D diagram.

[0077] Figure 1 The massage module 1 shown includes massage components 810, 820, 830, and 840 for massaging the user's spine and is mounted on a massage machine. For example, massage components 810, 820, 830, and 840 may include a first massage component 810, a second massage component 820, a third massage component 830, and a fourth massage component 840.

[0078] The massage machine equipped with massage module 1 can be a thermotherapy device. Massage module 1 can be built into the main body (not shown) of the massage machine, which is shaped like a bed. The user's upper body can be placed on the main body (not shown). A sub-body (not shown) on which the user's lower body rests can be connected to the main body (not shown) in a folding or sliding manner.

[0079] The massage module 1 can be configured to slide and engage with a space formed inside the main body (not shown) and move along the length of the main body (not shown). The length of the main body (not shown) can be the length of the user's spine lying on the main body (not shown). For example, it can be based on... Figure 1 The direction shown is called the front-to-back direction, which is the length direction of the main body (not shown).

[0080] Massage module 1 can be built into the main body (not shown) and perform massage on the user's entire spine in a linear reciprocating motion along the front-back direction. For example, massage module 1 can massage the lumbar, thoracic, or cervical vertebrae of a user lying on the main body (not shown) while moving in the front-back direction. Massage module 1 can provide physical massage to the user and can also utilize heat therapy in parallel.

[0081] Reference Figure 1 and Figure 2 The massage module 1 includes a base 10. The base 10 can be connected to the main body of the massager (not shown) in a manner that allows it to be conveyed in the back-and-forth direction. The base 10 can support the eccentric rotating components 600 and 700 and the massage components 810, 820, 830, and 840 described below. The base 10 can perform linear reciprocating motion inside the main body (not shown) via a conveying unit 101 provided on one side of the base 10.

[0082] Reference Figure 1 and Figure 2The base 10 includes a base plate 100. The base plate 100 may be the lowest structure forming the base 10. The base plate 100 may be configured to reciprocate linearly in the front-back direction within the interior space of the main body (not shown). For example, the base plate 100 may be connected to the main body (not shown) in a manner that allows it to slide inside the main body (not shown).

[0083] The base plate 100 includes a flat plate portion 110. The flat plate portion 110 may be a plate-shaped component for mounting various structures of the massage module 1. The flat plate portion 110 may be a flat, square plate that is wide in the horizontal direction.

[0084] An anti-interference hole 111 can be formed in the center of the flat plate portion 110. The anti-interference hole 111 can be formed to extend through the flat plate portion 110 in the vertical direction. The anti-interference hole 111 can have a shape that allows the drive unit 500 and the protective cover 500a, which are located at the lower part of the massage plate 300, to pass through. Depending on the shape of the drive unit 500 and the protective cover 500a, the front-to-back width of the left side portion and the front-to-back width of the right side portion are different based on the center. For example, the anti-interference hole 111 can be formed with a stepped shape, where the front-to-back width of the left side portion is smaller than the front-to-back width of the right side portion.

[0085] Reference Figure 1 and Figure 2 A support bracket 103 can be connected to one side of the flat plate 110. The support bracket 103 is a medium for connecting the conveying unit 101 to the flat plate 110, and it can be provided on the flat plate 110. For example, the support bracket 103 can be connected to the rear end of the flat plate 110 with the conveying unit 101 mounted on it.

[0086] The support bracket 103 includes a support frame 103a. The support frame 103a may be an elongated frame formed in the front-to-back direction. A pair of support frames 103a may be fixed to the rear side of the flat plate portion 110. The pair of support frames 103a may be spaced apart in the left-to-right direction.

[0087] The support bracket 103 includes a support plate 103b. The support plate 103b may be a wide square plate formed in the horizontal direction. The support plate 103b may be fixed in a position above a pair of support frames 103a.

[0088] The support bracket 103 includes a support wall 103c. The support wall 103c can be a wide square plate formed in the vertical direction. The support wall 103c can be formed to extend vertically upwards from one end of the support plate 103b. The support wall 103c can be integrally formed with the support plate 103b. For example, the support wall 103c can be integrally formed at the right end of the support plate 103b, forming a vertical shape perpendicular to the support plate 103b. A circular hole extending in the left-right direction is formed in the support wall 103c.

[0089] Reference Figure 1 and Figure 2 A conveying unit 101 can be provided on the support bracket 103. The conveying unit 101 can be provided on the support bracket 103 to provide the power required for the base plate 100 to perform linear reciprocating motion.

[0090] The conveying unit 101 includes a conveying motor 101a. The conveying motor 101a may have a rotating shaft that rotates in one direction or another. For example, the rotating shaft of the conveying motor 101a may rotate clockwise or counterclockwise. The conveying motor 101a may serve as a drive source for conveying the base plate 100.

[0091] The conveying unit 101 includes a conveying gear section 101b. The lower surface of the conveying gear section 101b can be placed on the upper surface of the support plate 103b. The conveying gear section 101b can be fixed with its right side against the left side of the support wall 103c. The conveying gear section 101b can be connected to a conveying motor 101a. For example, the conveying gear section 101b can be connected with its left side against the right side of the conveying motor 101a. Multiple gears that are linked to the rotational shaft of the conveying motor 101a can be housed inside the conveying gear section 101b. The output shaft of the conveying gear section 101b can protrude through its right side. The output shaft of the conveying gear section can be configured to pass through a hole formed in the support wall 103c from left to right. The conveying gear section 101b can be a gearbox for reducing the rotational speed of the conveying motor 101a.

[0092] The conveying gear section 101b and the conveying motor 101a can be configured as a geared motor. Each gear located inside the conveying gear section 101b can reduce the rotational speed input from the conveying motor 101a and output it through the output shaft.

[0093] The conveying unit 101 includes a pinion 101c. The pinion 101c can be fixed to the right end of the output shaft of the conveying gear section 101b. The pinion 101c can rotate together with the output shaft of the conveying gear section 101b. The pinion 101c can mesh with a rack (not shown) that is arranged in a longitudinal direction on the main body (not shown) of the massager. The pinion 101c can be driven by the conveying motor 101a to rotate forward or backward and move along the rack (not shown) arranged on the main body (not shown) in the longitudinal direction. Thus, the base plate 100, which is fixed to the conveying unit 101 with the support bracket 103 as a medium, can be conveyed by linear motion in the longitudinal direction.

[0094] Reference Figure 2 The base plate 100 includes a side wall portion 120. The side wall portion 120 may be elongated in the front-rear direction. The side wall portion 120 may be respectively provided at both ends of the flat plate portion 110. For example, the side wall portion 120 may be provided independently of the flat plate portion 110 and respectively fixed to the left end and right end of the flat plate portion 110. Conversely, the side wall portion 120 may also be integrally formed at the left end and right end of the flat plate portion 110. The side wall portion 120 may be located on the upper surface of the flat plate portion 110 in a form that protrudes upward from the upper surface of the flat plate portion 110.

[0095] Guide wheels 121 can be provided on the outer surface of the side wall portion 120. The guide wheels 121 can be rotatably disposed on the left side of the side wall portion 120 located at the left end of the flat plate portion 110 and the right side of the side wall portion 120 located at the right end of the flat plate portion 110. Multiple guide wheels 121 can be disposed at intervals on their respective side wall portions 120. The guide wheels 121 can be inserted into and supported in a track component (not shown) provided in the main body (not shown). The guide wheels 121 can roll on the track component (not shown), thereby smoothly and steadily guiding the linear reciprocating motion of the base plate 100.

[0096] Reference Figure 1 and Figure 2The base 10 includes a lifting unit 200. The lifting unit 200 is used to raise and lower the massage plate 300, which is connected to the upper part of the lifting unit 200, and the massage components 810, 820, 830, and 840 disposed on the upper part of the massage plate 300, relative to the base plate 100. The lifting unit 200 can be disposed between the base plate 100 and the massage plate 300. The lifting unit 200 operates based on the sensing results of a separate sensing unit (not shown) that senses the overall spinal curvature of the user, raising and lowering the massage plate 300 and the massage components 810, 820, 830, and 840 to accommodate the user's spinal curvature. Through this operation, the lifting unit 200 can apply mechanical force to the entire spine, including the lumbar and thoracic vertebrae, using the massage components 810, 820, 830, and 840, thereby enabling massage and physical therapy for correcting spinal curvature.

[0097] The lifting unit 200 includes an air bag 210. The air bag 210 can be formed into a bag shape that can expand or contract with the injection or discharge of air.

[0098] The air bag 210 can be disposed between the base plate 100 and the massage plate 300. The lower part of the air bag 210 can be placed directly or indirectly on the upper surface of the flat plate portion 110 of the base plate 100 and fixed in various ways, and the upper part of the air bag 210 can be fixed to the lower surface of the massage plate 300 in various ways to support the massage plate 300.

[0099] Multiple air bags 210 can be provided between the base plate 100 and the massage plate 300. For example, one air bag 210 can be provided on the front side and one on the rear side between the base plate 100 and the massage plate 300. The front air bag 210 can be placed on the front side of the upper surface of the flat plate portion 110 to be positioned in front of the anti-interference hole 111. The rear air bag 210 can be placed on the rear side of the upper surface of the flat plate portion 110 to be positioned behind the anti-interference hole 111. The front air bag 210 and the rear air bag 210 can be separated by placing the anti-interference hole 111 between them.

[0100] The air bag 210 can be connected to an air supply unit (not shown) via an air supply pipe (not shown). The air supply unit (not shown) can be located on one side of the main body (not shown) or on one side of the base 10 to inject air into the air bag 210.

[0101] The air bag 210 can raise and lower the massage plate 300 and the massage components 810, 820, 830, 840 disposed on the massage plate 300 relative to the base plate 100 depending on whether air is injected through the air supply section (not shown). For example, the air bag 210 can expand when air supplied from the air supply section (not shown) is injected into it, causing the massage plate 300 and the massage components 810, 820, 830, 840 to rise from the base plate 100. For example, the air bag 210 can contract when the air injected into it is discharged through at least one of the exhaust sections disposed in the air bag 210, the air supply pipe (not shown), and the air supply section (not shown), causing the massage plate 300 and the massage components 810, 820, 830, 840 to descend toward the base plate 100.

[0102] Reference Figure 1 and Figure 2 The lifting unit 200 includes a connecting rod component 220. The connecting rod component 220 may be a foldable component. The connecting rod component 220 may be connected to the base plate 100 and the massage plate 300. For example, one side of the connecting rod component 220 may be connected to the base plate 100. For example, the other side of the connecting rod component 220 may be connected to the massage plate 300.

[0103] Multiple linkage components 220 can be provided. For example, two linkage components 220 can be provided. One of the two linkage components 220 can connect the front portion of the base plate 100 and the front portion of the massage plate 300. The other of the two linkage components 220 can connect the rear portion of the base plate 100 and the rear portion of the massage plate 300. The two linkage components 220 can be arranged symmetrically in the front-rear direction. The linkage components 220 help to stably raise and lower the massage plate 300 through the air bag 210.

[0104] The linkage component 220 may include a first linkage connection portion 221. The first linkage connection portion 221 may be directly connected to the upper surface of the base plate 100. The first linkage connection portion 221 may be block-shaped. Two first linkage connections 221 may be provided to one linkage component 220. The two first linkage connections 221 may be symmetrically spaced on the left and right sides of the upper surface of the flat plate portion 110. The first linkage connection portion 221 may be fixed to the upper surface of the flat plate portion 110 of the base plate 100.

[0105] The linkage component 220 may include a lower linkage 225. One end of the lower linkage 225 may be hinged to one side of the first linkage joint 221 to allow rotation between the first linkage joint 221 and the lower linkage 225. Two lower linkages 225 may be provided to one linkage component 220. Each lower linkage 225 may be rotatably connected to its corresponding first linkage joint 221.

[0106] The linkage component 220 may include an upper linkage 227. One end of the upper linkage 227 is hinged to the other end of a lower linkage 225 via a connecting shaft 229. The upper linkage 227 and the lower linkage 225 are rotatable relative to each other about the connecting shaft 229. The upper linkage 227 and the lower linkage 225 can be folded or unfolded relative to each other by rotation. Two upper linkages 227 may be provided to a linkage component 220. Each upper linkage 227 can be rotatably connected to its corresponding lower linkage 225 via a connecting shaft 229.

[0107] The linkage component 220 may include a second linkage connection portion 223. The second linkage connection portion 223 can be directly connected to the upper surface of the massage plate 300. The second linkage connection portion 223 can be fixed to the lower surface of the massage plate 300. The second linkage connection portion 223 may be block-shaped. Two second linkage connections 223 may be provided to one linkage component 220. The two second linkage connections 223 may be symmetrically spaced on the left and right sides of the lower surface of the massage plate 300. Each second linkage connection portion 223 may be rotatably connected to its corresponding upper linkage 227. One side of the second linkage connection portion 223 may be hinged to the other end of the upper linkage 227 to allow rotation between the second linkage connection portion 223 and the upper linkage 227.

[0108] When air is injected into the air bag 210, causing the massage plate 300 to rise, the lower connecting rod 225 and the upper connecting rod 227 can unfold relative to each other. When air is expelled from the air bag 210, causing the massage plate 300 to fall, the lower connecting rod 225 and the upper connecting rod 227 can fold relative to each other.

[0109] Figure 3 This is a right view showing the front part of the massage plate 300 in a massage module 1 for a massage machine according to an embodiment of the present invention being pressurized. Figure 4 This is a right view showing the state in which the rear portion of the massage plate 300 in the massage module 1 for a massage machine according to an embodiment of the present invention is pressurized.

[0110] Reference Figure 3 and Figure 4Because the pressure applied to the massage plate 300 and massage components 810, 820, 830, and 840 changes in response to the curvature of the user's spine, the shape of the air bag 210 changes accordingly. That is, the air bag 210 can actively respond to the curvature of the user's spine by adjusting the massage plate 300 and massage components 810, 820, 830, and 840. Therefore, the massage module 1 does not apply excessive force to the user's spine when massaging the user.

[0111] For example, when the massage components 810, 820, 830, and 840 are pressurized due to the user's spinal curvature, and the front portion of the massage plate 300 supported by the front and rear air bags 210 is pressurized, the shape of the front air bag 210 will change due to being pressed by the massage plate 300. Thus, as... Figure 3 As shown, the front part of the massage plate 300 will naturally tilt downward in accordance with the curvature of the user's spine. The massage module 1 can improve the degree of freedom of the massage plate 300 and the massage components 810, 820, 830, and 840 in relation to the curvature of the user's spine.

[0112] Furthermore, when the massage components 810, 820, 830, and 840 are pressurized due to the user's spinal curvature, and the rear portion of the massage plate 300 supported by the front and rear air bags 210 is pressurized, the shape of the rear air bag 210 changes due to the pressure from the massage plate 300. Thus, as... Figure 4 As shown, the rear of the massage plate 300 will naturally tilt downward in accordance with the curvature of the user's spine. The massage module 1 can improve the degree of freedom of the massage plate 300 and the massage components 810, 820, 830, and 840 in relation to the curvature of the user's spine.

[0113] Reference Figure 1 and Figure 2 The base 10 includes a massage plate 300. The massage plate 300 can be a plate-shaped component used to set various structures of the massage module 1. The massage plate 300 can be a flat, square plate that is wide in the horizontal direction.

[0114] The massage plate 300 can be disposed on the upper part of the base plate 100 and the lifting unit 200. The massage plate 300 can be connected to the base plate 100 via the lifting unit 200. For example, the lower surface of the massage plate 300 can be connected to the upper part of the air bag 210 and the second connecting rod joint 223 of the connecting rod member 220, and the upper surface of the base plate 100 can be connected to the lower part of the air bag 210 and the first connecting rod joint 221 of the connecting rod member 220. That is, the massage plate 300 can be supported by the lifting unit 200 connected to the upper part of the base plate 100.

[0115] The massage plate 300 can be raised and lowered by the air bag 210. For example, when air is injected into the air bag 210, the massage plate 300 is pushed upward by the expanding air bag 210, thereby rising from the base plate 100. At this time, the lower connecting rod 225 and the upper connecting rod 227 of the connecting rod member 220 can open and unfold. Alternatively, when air is expelled from the air bag 210, the massage plate 300 descends downward toward the base plate 100 along with the contracting air bag 210. At this time, the lower connecting rod 225 and the upper connecting rod 227 of the connecting rod member 220 can overlap and fold. When the base 10 moves along the length direction (front-back direction) of the user's spine, the massage plate 300 tilts while pressurizing the air bag 210 in accordance with the curvature of the user's spine.

[0116] A mounting hole 310 may be formed in the massage plate. The mounting hole 310 may be formed to extend through the massage plate 300 in the vertical direction. The mounting hole 310 may be a square-shaped hole. The mounting hole 310 may be formed at a position off to one side from the center of the massage plate 300. For example, the mounting hole 310 may be formed on the right side with the center of the massage plate 300 as a reference.

[0117] Reference Figure 1 and Figure 2 The massage module 1 includes a mounting bracket 400. The mounting bracket 400 can be provided to the upper surface of the massage plate 300. The mounting bracket 400 can serve as a medium for mounting the first eccentric rotating member 600 (connected to the first and second massage members 810, 820) and the second eccentric rotating member 700 (connected to the third and fourth massage members 830, 840) on the upper part of the massage plate 300. The mounting bracket 400 can be connected to the massage plate 300 by screws while positioned on the upper surface of the massage plate 300. If necessary, the mounting bracket 400 can also be integrally formed with the massage plate 300.

[0118] Figure 5 This is an exploded perspective view showing a mounting bracket and attitude-maintaining unit according to an embodiment of the present invention. Figure 6 This is a perspective view showing an eccentric rotating component and a massage component according to an embodiment of the present invention. Figure 7 yes Figure 6 An exploded 3D diagram. Figure 8 It is viewed from the rear side. Figure 7 An exploded 3D diagram. Figure 9 This is a cross-sectional view of a massage module for a massage machine according to an embodiment of the present invention, taken horizontally with the posture holding unit as the reference.

[0119] Reference Figure 5The mounting bracket 400 includes a mounting plate 410. The mounting plate 410 can be formed into a square plate and configured to be wide in the horizontal direction. The mounting plate 410 can be placed on the upper surface of the massage plate 300 to contact the massage plate 300. The mounting plate 410 is fixed to the massage plate 300 by screws connecting its four corner sides.

[0120] A first through hole 411 and a second through hole 413 can be formed at the rear of the mounting plate 410. The first through hole 411 can be formed on the left side of the rear of the mounting plate 410. The second through hole 413 can be formed on the right side of the rear of the mounting plate 410. The first through hole 411 and the second through hole 413 can be arranged side by side with each other. The first through hole 411 and the second through hole 413 can be square-shaped holes that penetrate the mounting plate 410 in the vertical direction. For example, the first through hole 411 and the second through hole 413 can have the shape of long slits formed in the horizontal direction. The second through hole 413 can be located above the mounting hole 310 formed on the massage plate 300 and communicate with the mounting hole 310.

[0121] The mounting bracket 400 includes a first side plate 420. The first side plate 420 may be formed as a rectangular plate that is longer in the front-back direction and wider in the vertical direction. The first side plate 420 may be formed to stand vertically at the left end of the mounting plate 410 in the front-back direction. The first side plate 420 may be integrally formed with the mounting plate 410.

[0122] The mounting bracket 400 includes a second side plate 430. The second side plate 430 may be formed as a rectangular plate that is elongated in the front-rear direction and configured to be wider in the vertical direction. The second side plate 430 may be formed to stand vertically at the right end of the mounting plate 410 in the front-rear direction. The second side plate 430 may be integrally formed with the mounting plate 410. The second side plate 430 may be configured to face the first side plate 420. The second side plate 430 may be formed in a shape symmetrical to the first side plate 420.

[0123] The mounting bracket 400 includes a first shaft support portion 440. The first shaft support portion 440 may be a rectangular block that is elongated in the left-right direction. The first shaft support portion 440 may be formed vertically at the front of the upper surface of the mounting plate 410 in the left-right direction. One end and the other end of the first shaft support portion 440 may be connected to the first side plate 420 and the second side plate 430, respectively. For example, the left end of the first shaft support portion 440 may be directly connected to the front right side of the first side plate 420. The right end of the first shaft support portion 440 may be directly connected to the front left side of the second side plate 430. The first shaft support portion 440 may be integrally formed with the mounting plate 410, the first side plate 420, and the second side plate 430. The first shaft support portion 440 may be formed perpendicular to the first side plate 420 and the second side plate 430. The height of the first shaft support portion 440 may be lower than the height of the first side plate 420 and the second side plate 430.

[0124] The first shaft support portion 440 may have a first shaft support groove 441 recessed downwards formed on the left and right sides of its upper surface, respectively. The left and right first shaft support grooves 441 may be arranged side by side and spaced apart in the left-right direction. The central portion of the first shaft support groove 441 may be formed into a semi-circular shape. The first shaft support groove 441 may be formed into a semi-circular shape with a smaller diameter at the front and rear portions than at the central portion. The first shaft support groove 441 may be formed into a stepped shape with the central portion being more recessed than the front and rear portions.

[0125] A rotation sensing sensor 443 may be provided in the first shaft support portion 440. The rotation sensing sensor 443 may be provided on the right side of the front of the first shaft support portion 440. The rotation sensing sensor 443 can sense the rotation state of the first shaft portion 610 and the second shaft portion 710 by means of the sensing blade 790 provided in the second shaft portion 710 described below.

[0126] The mounting bracket 400 includes a second shaft support portion 450. The second shaft support portion 450 may be a rectangular block that is elongated in the left-right direction. The second shaft support portion 450 may be spaced apart and positioned behind the first shaft support portion 440. The second shaft support portion 450 may be formed to have a thicker front-to-back profile than the first shaft support portion 440. The second shaft support portion 450 may be formed vertically at the center of the upper surface of the mounting plate 410, extending in the left-right direction. One end and the other end of the second shaft support portion 450 may be connected to the first side plate 420 and the second side plate 430, respectively. For example, the left end of the second shaft support portion 450 may be directly connected to the center of the right side surface of the first side plate 420. The right end of the second shaft support portion 450 may be directly connected to the center of the left side surface of the second side plate 430. The second shaft support portion 450 may be integrally formed with the mounting plate 410, the first side plate 420, and the second side plate 430. The second shaft support portion 450 can be formed perpendicular to the first side plate 420 and the second side plate 430. The second shaft support portion 450 can be formed with a height lower than the height of the first side plate 420 and the second side plate 430. The second shaft support portion 450 can be formed with the same height as the first shaft support portion 440. The second shaft support portion 450 can be formed parallel to the first shaft support portion 440.

[0127] The second shaft support portion 450 may have two recessed second shaft support grooves 451 formed on the left and right sides of its upper surface, respectively. The left and right second shaft support grooves 451 may be arranged side by side and spaced apart in the left-right direction. The central portion of the second shaft support groove 451 may be formed into a semi-circular shape. The second shaft support groove 451 may be formed into a semi-circular shape with a smaller diameter at the front and rear portions than at the central portion. The second shaft support groove 451 may be formed into a stepped shape with a more recessed central portion than at the front and rear portions. The central portion of the second shaft support groove 451 may be formed to have a front-to-back width that is thicker than the front-to-back width of the central portion of the first shaft support groove 441. The front and rear portions of the second shaft support groove 451 may be formed into the same shape as the front and rear portions of the first shaft support groove 441.

[0128] The mounting bracket 400 includes a third axis support portion 460. The third axis support portion 460 may be a rectangular block that is elongated in the left-right direction. The third axis support portion 460 may be spaced apart and positioned behind the second axis support portion 450. The third axis support portion 460 may be formed to have the same front-to-back thickness as the first axis support portion 440. The third axis support portion 460 may be formed so that its lower surface rises vertically in the left-right direction behind the upper surface of the mounting plate 410. One end and the other end of the third axis support portion 460 may be connected to the first side plate 420 and the second side plate 430, respectively. For example, one end of the third axis support portion 460 may be directly connected to the rear left side of the first side plate 420. The other end of the third axis support portion 460 may be directly connected to the rear right side of the second side plate 430. The third axis support portion 460 may be integrally formed with the mounting plate 410, the first side plate 420, and the second side plate 430. The third shaft support portion 460 can be formed perpendicular to the first side plate 420 and the second side plate 430. The third shaft support portion 460 can be formed with a height lower than that of the first side plate 420 and the second side plate 430. The third shaft support portion 460 can be formed with the same height as the second shaft support portion 450. The third shaft support portion 460 can be formed parallel to the first shaft support portion 440 and the second shaft support portion 450.

[0129] The third shaft support portion 460 may have a third shaft support groove 461 recessed downwards formed on the left and right sides of its upper surface, respectively. The left and right third shaft support grooves 461 may be arranged side by side and spaced apart in the left-right direction. The central portion of the third shaft support groove 461 may be formed into a semi-circular shape. The third shaft support groove 461 may be formed into a semi-circular shape with a smaller diameter at the front and rear portions than at the central portion. The third shaft support groove 461 may be formed into a stepped shape with the central portion being more recessed than the front and rear portions. The third shaft support groove 461 may be formed to be substantially the same as the first shaft support groove 441.

[0130] The bracket 400 includes a first shaft support cover 440a. The first shaft support cover 440a may be a rectangular block that is elongated in the left-right direction. The first shaft support cover 440a is connected to the upper part of the first shaft support portion 440. For example, the first shaft support cover 440a can be fixed to the first shaft support portion 440 by screws or the like, with its lower surface resting on the upper surface of the first shaft support portion 440. The sum of the heights of the first shaft support cover 440a and the first shaft support portion 440 may be less than the height of the first side plate 420.

[0131] The first shaft support cover 440a may have a fourth shaft support groove 441a recessed upwards formed on the left and right sides of its lower surface, respectively. The left and right fourth shaft support grooves 441a may be arranged side by side and spaced apart in the left-right direction. The central portion of the fourth shaft support groove 441a may be formed into a semi-circular shape. The fourth shaft support groove 441a may be formed into a semi-circular shape with a smaller diameter at the front and rear portions than at the central portion. The fourth shaft support groove 441a may be formed into a stepped shape with the central portion being more recessed than the front and rear portions. The fourth shaft support groove 441a is only positioned vertically opposite to the first shaft support groove 441, and it may be formed into a substantially identical shape. The fourth shaft support groove 441a may be arranged in a vertically symmetrical shape corresponding to the first shaft support groove 441 when the first shaft support portion 440 and the first shaft support cover 440a are connected.

[0132] The bracket 400 includes a second shaft support cover 450a. The second shaft support cover 450a may be a rectangular block that is elongated in the left-right direction. The second shaft support cover 450a is connected to the upper part of the second shaft support portion 450. For example, the second shaft support cover 450a may be fixed to the second shaft support portion 450 by screws or the like, with its lower surface resting on the upper surface of the second shaft support portion 450. The second shaft support cover 450a may have the same height as the first shaft support cover 440a. The sum of the heights of the second shaft support cover 450a and the second shaft support portion 450 may be less than the height of the first side plate 420.

[0133] The second shaft support cover 450a may have fifth shaft support grooves 451a recessed upwards formed on the left and right sides of its lower surface, respectively. The left and right fifth shaft support grooves 451a may be arranged side-by-side and spaced apart in the left-right direction. The central portion of the fifth shaft support groove 451a may be formed into a semi-circular shape. The fifth shaft support groove 451a may be formed into a semi-circular shape with a smaller diameter at the front and rear portions than at the central portion. The fifth shaft support groove 451a may be formed into a stepped shape with the central portion being more recessed than the front and rear portions. The fifth shaft support groove 451a is simply positioned vertically opposite to the second shaft support groove 451, and can be formed into a substantially identical shape. The fifth shaft support groove 451a may be configured to be vertically symmetrical with the second shaft support groove 451 when the second shaft support portion 450 and the second shaft support cover 450a are connected.

[0134] The bracket 400 includes a third shaft support cover 460a. The third shaft support cover 460a may be a rectangular block that is elongated in the left-right direction. The third shaft support cover 460a is connected to the upper part of the third shaft support portion 460. For example, the third shaft support cover 460a may be fixed to the third shaft support portion 460 by screws or the like, with its lower surface resting on the upper surface of the third shaft support portion 460. The third shaft support cover 460a may have the same height as the second shaft support cover 450a. The sum of the heights of the third shaft support cover 460a and the third shaft support portion 460 may be less than the height of the first side plate 420.

[0135] The third shaft support cover 460a may have a sixth shaft support groove 461a recessed upwards formed on the left and right sides of its lower surface, respectively. The left and right sixth shaft support grooves 461a may be arranged side by side and spaced apart in the left-right direction. The central portion of the sixth shaft support groove 461a may be formed into a semi-circular shape. The sixth shaft support groove 461a may be formed into a semi-circular shape with a smaller diameter at the front and rear portions than at the central portion. The sixth shaft support groove 461a may be formed into a stepped shape with the central portion being more recessed than the front and rear portions. The sixth shaft support groove 461a is simply positioned vertically opposite to the third shaft support groove 461, and may be formed into a substantially identical shape. The sixth shaft support groove 461a may be arranged in a vertically symmetrical shape corresponding to the third shaft support groove 461 when the third shaft support portion 460 and the third shaft support cover 460a are connected.

[0136] The bracket 400 includes a support rod 470. The support rod 470 may be formed to be elongated in the front-rear direction. The support rod 470 may be a rod with a "T"-shaped cross-section. The support rod 470 may be formed to a height consistent with the height difference between the upper end of the first shaft support cover 440a connected to the first shaft support portion 440 and the upper end of the first side plate 420. The support rod 470 may be connected to support at least one of the first shaft support cover 440a, the second shaft support cover 450a, and the third shaft support cover 460a, which are respectively connected to the first shaft support portion 440, the second shaft support portion 450, and the third shaft support portion 460. For example, the support rod 470 may be placed in contact with the lower surface of the central portion of the upper surface of the first shaft support cover 440a and the central portion of the upper surface of the second shaft support cover 450a, and may be fixed to the first shaft support cover 440a and the second shaft support cover 450a by screws. The support rod 470 can be configured orthogonally to the first shaft support cover 440a and the second shaft support cover 450a. The support rod 470 can also be configured parallel to the first side plate 420 and the second side plate 430. For example, the support rod 470 can be located at the center between the first side plate 420 and the second side plate 430.

[0137] Reference Figure 2 The massage module 1 includes a drive unit 500. The drive unit 500 is used to operate the massage components 810, 820, 830, and 840. The drive unit 500 can be fixed by connection to at least one of the lower surfaces of the massage plate 300 and the mounting plate 410. For example, the drive unit 500 can be disposed on the lower part of the massage plate 300 and connected to the mounting plate 410 through a mounting hole 310. The drive unit 500 can be positioned such that it protrudes downward from the lower surface of the massage plate 300.

[0138] The drive unit 500 includes a drive gear section 510. The drive gear section 510 can be generally formed in a cuboid shape. The drive gear section 510 can be a speed reducer that reduces the input rotation speed before outputting. The drive gear section 510 can have an input shaft and an output shaft that are linked together. A portion of the output shaft of the drive gear section 510 can protrude from the back of the drive gear section 510 toward the rear. The output shaft of the drive gear section 510 is connected to an output gear 530. The output gear 530 can rotate together with the output shaft of the drive gear section 510. The upper part of the output gear 530 can pass through the mounting hole 310 from the lower side to the upper side and be received in the second through hole 413. The output gear 530 can pass through the interconnected mounting hole 310 and the second through hole 413 and mesh with the second linkage gear 730 of the second eccentric rotating member 700 described below. The drive gear section 510 can be disposed on the lower part of the massage plate 300. The upper surface of the drive gear section 510 can pass through the mounting hole 310 formed in the massage plate 300 and face the lower surface of the mounting plate 410. The drive gear section 510 can be connected to the lower surface of the mounting plate 410 by a separate connecting screw or the like, thereby fixing the drive unit 500 to the mounting plate 410. The front, lower, and back surfaces of the drive gear section 510 can be surrounded by a protective cover 500a fixed to the mounting plate 410.

[0139] The drive unit 500 includes a drive motor 520. The drive motor 520 may have a rotating shaft that rotates in one direction or another depending on the operating state. For example, the rotating shaft of the drive motor 520 may rotate in either the forward or reverse direction. The drive motor 520 may be connected to one face of the drive gear section 510. For example, the drive motor 520 may be connected to and fixed to the left side face of the drive gear section 510. The drive motor 520 and the drive gear section 510 may be configured as a geared motor. The rotating shaft of the drive motor 520 may be connected to the input shaft of the drive gear section 510. The drive motor 520 can provide rotational force for operating the massage components 810, 820, 830, and 840. Regarding the rotation of the drive motor 520, it can be input through the input shaft of the drive gear section 510 and, after being reduced in speed, output to the output shaft of the drive gear section 510. The rotation output to the output shaft of the drive gear section 510 can be transmitted to the first eccentric rotating member 600 and the second eccentric rotating member 700 described below. This will be explained in more detail below.

[0140] Reference Figure 1 , Figure 2 as well as Figures 5 to 8 The massage module 1 includes eccentric rotating components 600 and 700. The eccentric rotating components 600 and 700 are rotatably mounted on the upper part of the base 10. The eccentric rotating components 600 and 700 serve as the medium for linkage between the drive unit 500 and the massage components 810, 820, 830, and 840. The eccentric rotating components 600 and 700 are provided to convert the rotational motion provided by the drive unit 500 into lifting motion of the massage components 810, 820, 830, and 840.

[0141] Multiple eccentric rotating components 600 and 700 can be provided. For example, two eccentric rotating components 600 and 700 can be provided. The eccentric rotating components 600 and 700 include a first eccentric rotating component 600 located on one side of the upper part of the base 10 and a second eccentric rotating component 700 located on the other side of the upper part of the base 10.

[0142] The first eccentric rotating component 600 can be supported on the left side of the mounting bracket 400 and rotatably mounted on the upper left side of the massage plate 300. The second eccentric rotating component 700 can be supported on the right side of the mounting bracket 400 and rotatably mounted on the upper right side of the massage plate 300. The first eccentric rotating component 600 and the second eccentric rotating component 700 can be configured side by side. The first eccentric rotating component 600 and the second eccentric rotating component 700 can rotate in conjunction when the drive unit 500 is working. In the following description, the configuration state of the first and second eccentric rotating components 600 and 700 and the first massage component 810, second massage component 820, third massage component 830 and fourth massage component 840 connected thereto before the drive unit 500 is working can be simply referred to as the initial state.

[0143] Reference Figures 5 to 8 The first eccentric rotating component 600 includes a first shaft portion 610. The first shaft portion 610 may be a circular shaft that is elongated in the front-rear direction. The first shaft portion 610 may be rotatably disposed on the upper side of the base 10. For example, the first shaft portion 610 may be disposed through the mounting bracket 400 and located on the upper left side of the massage plate 300.

[0144] The first shaft portion 610 rotates under the drive of the drive unit 500. For example, the first shaft portion 610 can rotate in one direction or another in conjunction with the rotation direction of the drive unit 500 when the drive unit 500 is operating. The rotation direction of the drive unit 500 can be the rotation direction of the drive motor 520's rotating shaft. The first shaft portion 610 can receive the rotational force provided by the drive unit 500 through the second eccentric rotating member 700 described below. The first shaft portion 610 rotates by receiving the rotational force provided by the drive unit 500, thereby enabling the first eccentric portion 640 and the second eccentric portion 650 described below to rotate eccentrically.

[0145] A first retaining pin 611 is connected to the first shaft portion 610. The first retaining pin 611 may be a cylindrical pin. The first retaining pin 611 may be formed to extend from one side to the other. The first retaining pin 611 may be inserted into a first retaining pin hole 611a formed on the front side of the first shaft portion 610 for connection. The first retaining pin hole 611a may be formed to extend through the first shaft portion 610 in the radial direction. The first retaining pin 611 may be formed to be longer than the diameter of the first shaft portion 610 in the length direction. The first retaining pin 611 may be inserted into the first retaining pin hole 611a and at least one end of the first retaining pin 611 may protrude outward toward the outer peripheral surface of the first shaft portion 610. For example, at least one end of the first retaining pin 611 may protrude from the first retaining pin hole 611a.

[0146] A second retaining pin 613 is connected to the first shaft portion 610. The second retaining pin 613 may be a cylindrical pin. The second retaining pin 613 may be formed to extend from one side to the other. The second retaining pin 613 may be inserted into a second retaining pin hole 613a formed on the rear side of the first shaft portion 610 for connection. The second retaining pin hole 613a may be formed to extend through the first shaft portion 610 in the radial direction. The second retaining pin 613 may be formed to be longer than the diameter of the first shaft portion 610 in the length direction. The second retaining pin 613 may be inserted into the second retaining pin hole 613a, and at least one end of the second retaining pin 613 protrudes outward toward the outer periphery of the first shaft portion 610. For example, at least one end of the second retaining pin 613 may protrude from the second retaining pin hole 613a.

[0147] A first adjusting pin 615 is connected to the first shaft portion 610. The first adjusting pin 615 may be a cylindrical pin. The first adjusting pin 615 may be formed to extend from one side to the other. The first adjusting pin 615 may be inserted into a first adjusting pin hole 615a formed on the rear side of the first shaft portion 610 for connection. The first adjusting pin hole 615a may be located between a first fixing pin hole 611a and a second fixing pin hole 613a. The first adjusting pin hole 615a may be formed to extend through the first shaft portion 610 in the radial direction. The first adjusting pin 615 may be formed to be longer than the diameter of the first shaft portion 610 in the length direction. The first adjusting pin 615 may be inserted into the first adjusting pin hole 615a, and one end of the first adjusting pin 615 protrudes outward toward the outer periphery of the first shaft portion 610. For example, the right end of the first adjusting pin 615 may protrude toward the right side of the first adjusting pin hole 615a. The first adjusting pin 615 can be accommodated in the first adjusting groove 650b described below.

[0148] A first insert groove 617 is formed in the first shaft portion 610. The first insert groove 617 may be formed in a manner that recesses along the entire circumference of the outer peripheral surface of the first shaft portion 610. The first insert groove 617 may be formed in the form of a slit. Multiple first insert grooves 617 may be provided. For example, five first insert grooves 617 may be provided. Two first insert grooves 617 may be formed spaced apart at the front of the first shaft portion 610, and three first insert grooves 617 may be formed spaced apart at the rear of the first shaft portion 610. The spacing between each first insert groove 617 may vary as needed.

[0149] A first retaining member 660 can be inserted into the first inserting groove 617. The first retaining member 660 is inserted into each of the first inserting grooves 617, thereby connecting to the first shaft portion 610. The first retaining member 660 connected to the first inserting groove 617 can be formed as a flange protruding from the outer peripheral surface of the first shaft portion 610 toward the radial direction. The first retaining member 660 can constrain each component mounted on the outer peripheral surface of the first shaft portion 610 to a predetermined position on the first shaft portion 610. The first retaining member 660 can be an open ring. The first retaining member 660 and the first inserting groove 617 can be provided on the first shaft portion 610 corresponding to the positions where they are connected to the first sleeve 670, the first eccentric portion 640, the second eccentric portion 650, the first linkage gear 630, and the second sleeve 680, respectively.

[0150] The first shaft portion 610 can be inserted into the first bearing 620. At least one first bearing 620 can be installed at the front, central and rear portions of the first shaft portion 610. For example, one first bearing 620 can be installed at the front and rear portions of the first shaft portion 610, and two first bearings 620 can be installed at the central portion of the first shaft portion 610.

[0151] The lower part of the first bearing 620, which is installed at the front of the first shaft portion 610, can be inserted into the left first shaft support groove 441 of the mounting bracket 400. The lower part of the first bearing 620, which is installed at the center of the first shaft portion 610, can be inserted into the left second shaft support cover 451 of the mounting bracket 400. The lower part of the first bearing 620, which is installed at the rear of the first shaft portion 610, can be inserted into the left third shaft support groove 461 of the mounting bracket 400. In this way, the first shaft portion 610 can be rotatably supported by the first shaft support portion 440, the second shaft support portion 450, and the third shaft support portion 460 of the mounting bracket 400 through the first bearings 620.

[0152] The first shaft support portion 440, the second shaft support portion 450, and the third shaft support portion 460, which support the first shaft portion 610, can be connected to the first shaft support cover 440a, the second shaft support cover 450a, and the third shaft support cover 460a in a corresponding manner. The upper part of the first bearing 620 installed at the front of the first shaft portion 610 can be inserted into the fourth shaft support groove 441a on the left. The upper part of the first bearing 620 installed at the center of the first shaft portion 610 can be inserted into the fifth shaft support groove 451a on the left. The upper part of the first bearing 620 installed at the rear of the first shaft portion 610 can be inserted into the sixth shaft support groove 461a on the left. Each first bearing 620 and the first shaft portion 610 supported therethrough correspond to the first shaft support portion 440, the second shaft support portion 450 and the third shaft support portion 460 and are connected to the first shaft support cover 440a, the second shaft support cover 450a and the third shaft support cover 460a, so that they can be stably supported and will not detach from the left side of the bracket 400.

[0153] A first sleeve 670 can be embedded in the first shaft portion 610. The first sleeve 670 can be embedded in the front side of the first shaft portion 610. The first sleeve 670 can be located adjacent to the front face of the first bearing 620 mounted on the front face of the first shaft portion 610. The first sleeve 670 can be located at the rear end of the corresponding first insertion groove 617. For example, the front face of the first sleeve 670 can be located at the rear end of the first insertion groove 617 formed in the first shaft portion 610 from the front. The front face of the first sleeve 670 is held in place by a first locking member 660 inserted into the first insertion groove 617 from the front, thereby restricting the forward movement of the first sleeve 670 when connected to the first shaft portion 610.

[0154] A second sleeve 680 can be embedded in the first shaft portion 610. The second sleeve 680 can be embedded in the rear side of the first shaft portion 610. The second sleeve 680 can be located adjacent to the back side of the first bearing 620 mounted on the rear side of the first shaft portion 610. The second sleeve 680 can be located at the front end of the corresponding first insertion groove 617. For example, the back side of the second sleeve 680 can be located at the front end of the fifth first insertion groove 617 formed in the first shaft portion 610 from the front. The back side of the second sleeve 680 is locked by a first locking member 660 inserted into the fifth first insertion groove 617 from the front, thereby restricting the rearward movement of the second sleeve 680 when connected to the first shaft portion 610.

[0155] Reference Figure 5 and Figure 8The first eccentric rotating component 600 includes a first linkage gear 630. The first linkage gear 630 can be provided to cause the first eccentric rotating component 600 to rotate with the rotation of the drive unit 500. The first linkage gear 630 can be a spur gear. The first linkage gear 630 can receive rotational force transmitted from the second linkage gear 730 of the second eccentric rotating component 700 described below.

[0156] A first shaft hole 631 may be formed in the first linkage gear 630. The first shaft hole 631 may be formed at the center of the first linkage gear 630. The first shaft hole 631 may be formed to pass through the first linkage gear 630 in the front-back direction.

[0157] A first pin constraint groove (not shown) may be formed in the first linkage gear 630. The first pin constraint groove (not shown) is provided to fix the first linkage gear 630 to the first shaft portion 610. The first pin constraint groove (not shown) may be formed recessed towards the rearward side on the front side of the first linkage gear 630. The first pin constraint groove (not shown) may be formed transversely through the first shaft hole 631 on one side of the circumference and the opposite side of the circumference. The first pin constraint groove (not shown) may be open towards the front and may communicate directly with the first shaft hole 631. The width of the first pin constraint groove (not shown) may correspond to the same diameter as the second fixing pin 613.

[0158] The first linkage gear 630 can be connected to the rear portion of the first shaft portion 610. The first shaft portion 610 can be inserted into the first linkage gear 630 through the first shaft hole 631. The first linkage gear 630 can be located between the first bearing 620 disposed in the central portion of the first shaft portion 610 and the first bearing 620 disposed in the rear portion of the first shaft portion 610. The first linkage gear 630 can be located between the second shaft support portion 450 and the third shaft support portion 460. The lower end of the first linkage gear 630 can be accommodated in the first through hole 411. The first linkage gear 630 can avoid interference from the mounting plate 410 due to the first through hole 411.

[0159] A second retaining pin 613 protruding from the first shaft portion 610 can be inserted into the first pin constraint groove (not shown) of the first linkage gear 630. The inner back surface (inner rear bottom surface) of the first pin constraint groove (not shown) of the first linkage gear 630 is locked by the second retaining pin 613, thereby restricting the forward movement of the first linkage gear 630 when connected to the first shaft portion 610. The two sides in the vertical width direction of the inner surface of the first pin constraint groove (not shown) of the first linkage gear 630 are locked by the second retaining pin 613, thereby allowing the first linkage gear 630 to rotate together with the first shaft portion 610.

[0160] The back of the first linkage gear 630 can be located at the front end of its corresponding first insert groove 617. For example, the back of the first linkage gear 630 can be located at the front end of the fourth first insert groove 617 formed in the first shaft portion 610 from the front. The back of the first linkage gear 630 is locked by a first locking member 660 inserted into the fourth first insert groove 617 from the front, thereby restricting the rearward movement of the first linkage gear 630 when connected to the first shaft portion 610.

[0161] In this way, the first linkage gear 630 can be connected to the first shaft 610 through the second fixing pin 613 and the first locking member 660.

[0162] Reference Figure 5 and Figure 8 The first eccentric rotating component 600 includes eccentric portions 640 and 650. Eccentric portions 640 and 650 can be eccentrically connected to the first shaft portion 610. Multiple eccentric portions 640 and 650 eccentrically connected to the first shaft portion 610 can be provided. For example, two eccentric portions 640 and 650 eccentrically connected to the first shaft portion 610 can be provided and spaced apart in the front-rear direction.

[0163] The first eccentric rotating member 600 includes a first eccentric portion 640 connected to the front side of the first shaft portion 610. The first eccentric portion 640 may be formed as a cylinder having a central axis facing the front-rear direction when viewed as a whole. The first eccentric portion 640 may perform the function of raising and lowering the first massage member 810 described below by eccentric rotation with the rotation of the first shaft portion 610.

[0164] A first eccentric hole 640a may be formed in the first eccentric portion 640. The first eccentric hole 640a may be formed at a position offset from the center of the first eccentric portion 640. For example, the first eccentric hole 640a may be formed at a position at a certain distance from the center of the first eccentric portion 640. The first eccentric hole 640a may be formed to extend through the first eccentric portion 640 in the front-back direction.

[0165] A first pin retaining groove 640b may be formed in the first eccentric portion 640. The first pin retaining groove 640b is provided to fix the first eccentric portion 640 to the first shaft portion 610. The first pin retaining groove 640b may be formed recessed towards the front side on the back surface of the first eccentric portion 640. The first pin retaining groove 640b may be formed transversely through the first eccentric hole 640a on one side of the circumference of the first eccentric hole 640a and on the opposite side of the circumference. The first pin retaining groove 640b may be formed to extend straight outward in a radial direction from the first eccentric hole 640a. The first pin retaining groove 640b may be open towards the rear and may communicate directly with the first eccentric hole 640a. The width of the first pin retaining groove 640b may correspond to the same diameter as the first retaining pin 611.

[0166] A first mounting groove 640c may be formed in the first eccentric portion 640. The first mounting groove 640c may be formed at the center of the outer peripheral surface of the first eccentric portion 640. The first mounting groove 640c may be formed as a recess along the entire circumference of the outer peripheral surface of the first eccentric portion 640. The first mounting groove 640c may be formed in the form of a closed curve on the outer peripheral surface of the first eccentric portion 640.

[0167] The first eccentric portion 640 can be connected to the front portion of the first shaft portion 610. The first shaft portion 610 can be inserted into the first eccentric portion 640 through the first eccentric hole 640a. The first shaft portion 610 is inserted into the first eccentric hole 640a, which is formed at a position offset from the center of the first eccentric portion 640, so that the first eccentric portion 640 can be eccentrically connected to the first shaft portion 610. The first eccentric portion 640 can be located between the first bearing 620 disposed at the front portion of the first shaft portion 610 and the first bearing 620 disposed at the center portion of the first shaft portion 610. The first eccentric portion 640 can be located between the first shaft support portion 440 and the second shaft support portion 450. The first eccentric portion 640 can be configured such that, in the initial state, the point on the outer peripheral surface of the first eccentric portion 640 farthest from the center of the first shaft portion 610 (hereinafter referred to as the "rising point of the first eccentric portion") faces to the right. For example, in the initial state, the rising and falling point of the first eccentric portion 640 can be located horizontally on the right side relative to the center of the first shaft portion 610 and the center of the first eccentric hole 640a, in a manner that faces the 3 o'clock direction when viewed from the front.

[0168] A first retaining pin 611, protruding from the first shaft portion 610, can be inserted into the first pin retaining groove 640b of the first eccentric portion 640. The inner front surface (inner front side bottom surface) of the first pin retaining groove 640b is locked by the first retaining pin 611, thereby restricting the rearward movement of the first eccentric portion 640 when connected to the first shaft portion 610. The two sides in the vertical width direction of the inner surface of the first pin retaining groove 640b are locked by the first retaining pin 611, thereby allowing the first eccentric portion 640 to rotate eccentrically with the first shaft portion 610 in the same direction as the rotation direction of the first shaft portion 610.

[0169] The front of the first eccentric portion 640 can be located at the rear end of the corresponding first insert groove 617. For example, the front of the first eccentric portion 640 can be located at the rear end of the second first insert groove 617 from the front in each of the first insert grooves 617 formed in the first shaft portion 610. The front of the first eccentric portion 640 is locked by a first locking member 660 inserted into the second first insert groove 617 from the front, thereby restricting the forward movement of the first eccentric portion 640 when connected to the first shaft portion 610.

[0170] In this way, the first eccentric portion 640 can be eccentrically connected to the first shaft portion 610 through the first fixing pin 611 and the first locking member 660.

[0171] The first eccentric portion 640 includes a first front large-diameter portion 641 in the shape of a cylinder, a first small-diameter portion 643 in the shape of a cylinder having a diameter smaller than that of the first front large-diameter portion 641, and a first rear large-diameter portion 645 in the shape of a cylinder having the same diameter as that of the first front large-diameter portion 641.

[0172] The first front large-diameter portion 641, the first small-diameter portion 643, and the first rear large-diameter portion 645 can be sequentially positioned along the front-rear direction. The centers of the first front large-diameter portion 641, the first small-diameter portion 643, and the first rear large-diameter portion 645 can be aligned with each other. The first small-diameter portion 643 is located between the first front large-diameter portion 641 and the first rear large-diameter portion 645, thereby connecting the first front large-diameter portion 641 and the first rear large-diameter portion 645.

[0173] The outer peripheral surface of the first small diameter portion 643 may be in a stepped shape that is collapsed relative to the outer peripheral surfaces of the first front large diameter portion 641 and the first rear large diameter portion 645. The first mounting groove 640c of the first eccentric portion 640 may be formed by being surrounded by the back of the first front large diameter portion 641, the outer peripheral surface of the first small diameter portion, and the front of the first rear large diameter portion 645.

[0174] The first front large-diameter portion 641 and the first small-diameter portion 643 can be formed separately and can be separated or combined. The first small-diameter portion 643 and the first rear large-diameter portion 645 are formed integrally from the beginning and therefore cannot be separated.

[0175] The first eccentric rotating member 600 includes a second eccentric portion 650 connected to the rear side of the first shaft portion 610. The second eccentric portion 650 may be formed as a cylinder having a central axis facing the front-rear direction when viewed as a whole. The second eccentric portion 650 may perform the function of raising and lowering the second massage member 820 described below by eccentric rotation with the rotation of the first shaft portion 610.

[0176] A second eccentric hole 650a may be formed in the second eccentric portion 650. The second eccentric hole 650a may be formed at a position offset from the center of the second eccentric portion 650. For example, the second eccentric hole 650a may be formed at a position at a certain distance from the center of the second eccentric portion 650. The second eccentric hole 650a may be formed to extend through the second eccentric portion 650 in the front-back direction.

[0177] A first adjustment groove 650b may be formed in the second eccentric portion 650. The first adjustment groove 650b is provided to adjust the eccentric rotation of the second eccentric portion 650. The first adjustment groove 650b may be formed recessed towards the rear on the front side of the second eccentric portion 650. The first adjustment groove 650b may be formed as an arch surrounding a portion of the circumference of the second eccentric hole 650a. The first adjustment groove 650b may be directly connected to the second eccentric hole 650a. The first adjustment groove 650b may be open towards the front. The first adjustment groove 650b may be formed such that the first adjustment pin 615 housed inside can rotate freely at a certain angle around the first shaft portion 610.

[0178] Inside the first adjusting groove 650b, a first locking surface 657 forming the lower left surface and a second locking surface 659 forming the lower right surface, when viewed from the initial state, can be formed. The vertical distance between the first locking surface 657 and the center of the second eccentric hole 650a is formed to be the same as the radius of the first adjusting pin 615, so that the first adjusting pin 615 can be properly positioned on the first locking surface 657. The vertical distance between the second locking surface 659 and the center of the second eccentric hole 650a is formed to be the same as the radius of the first adjusting pin 615, so that the first adjusting pin 615 can be properly positioned on the second locking surface 659. The first locking surface 657 and the second locking surface 659 can form an angle with each other. For example, the angle between the first locking surface 657 and the second locking surface 659 can be 180 degrees. The first locking surface 657 and the second locking surface 659 can be symmetrical about their center relative to each other. The first locking surface 657 and the second locking surface 659 can be located below an imaginary line connecting the center of the second eccentric portion 650 and the center of the second eccentric hole 650a, and are parallel to the aforementioned imaginary line. The first locking surface 657 and the second locking surface 659 can be configured horizontally in the initial state.

[0179] A second mounting groove 650c may be formed in the second eccentric portion 650. The second mounting groove 650c may be formed at the center of the outer peripheral surface of the second eccentric portion 650. The second mounting groove 650c may be formed as a recess along the entire circumference of the outer peripheral surface of the second eccentric portion 650. The second mounting groove 650c may be formed in the form of a closed curve on the outer peripheral surface of the second eccentric portion 650.

[0180] The second eccentric portion 650 can be connected to the rear portion of the first shaft portion 610. The first shaft portion 610 can be inserted into the second eccentric portion 650 through the second eccentric hole 650a. The first shaft portion 610 is inserted into the second eccentric hole 650a, which is formed at a position offset from the center of the second eccentric portion 650, so that the second eccentric portion 650 can be eccentrically connected to the first shaft portion 610. The second eccentric portion 650 can be located between the first bearing 620 disposed at the center of the first shaft portion 610 and the first linkage gear 630 disposed at the rear portion of the first shaft portion 610. The first eccentric portion 640 can be located between the second shaft support portion 450 and the third shaft support portion 460. The second eccentric portion 650 can be configured such that, in the initial state, the point on the outer peripheral surface of the second eccentric portion 650 furthest from the center of the first shaft portion 610 (hereinafter referred to as the "rising point of the first eccentric portion") faces to the right, the same as the rising point of the first eccentric portion 640. For example, in the initial state, the rising and falling point of the second eccentric portion 650 can be located horizontally on the right side relative to the center of the first shaft portion 610 and the center of the second eccentric hole 650a, in a manner that faces the 3 o'clock direction when viewed from the front.

[0181] In the initial state, the first eccentric portion 640 and the second eccentric portion 650 can be positioned side by side in the front-rear direction. In the initial state, the first eccentric portion 640 and the second eccentric portion 650 can have the same phase relative to the first shaft portion 610.

[0182] One end of the first adjusting pin 615 protruding from the first shaft portion 610 can be accommodated in the first adjusting groove 650b of the second eccentric portion 650. For example, the right end of the first adjusting pin 615 can be inserted into the first adjusting groove 650b, and the right end of the first adjusting pin 615 can be positioned on the second locking surface 659 inside the first adjusting groove 650b. The inner back surface (inner rear bottom surface) of the first adjusting groove 650b is locked by the first adjusting pin 615, thereby restricting the forward movement of the second eccentric portion 650 when connected to the first shaft portion 610. The first adjusting pin 615 can rotate freely at a certain angle within the first adjusting groove 650b. For example, when the first shaft portion 610 rotates counterclockwise, the first adjusting pin 615 can rotate freely 180 degrees from the second locking surface 659 to the first locking surface 657. After that, the second eccentric portion 650 can be eccentrically rotated counterclockwise by pushing the first locking surface 657.

[0183] The back surface of the second eccentric portion 650 can be located at the front end of the corresponding first insert groove 617. For example, the back surface of the second eccentric portion 650 can be located at the front end of the third first insert groove 617 from the front among the first insert grooves 617 formed in the first shaft portion 610. The back surface of the second eccentric portion 650 is locked by a first locking member 660 inserted into the third first insert groove 617 from the front, thereby restricting the rearward movement of the second eccentric portion 650 when connected to the first shaft portion 610.

[0184] In this way, the second eccentric portion 650 can be eccentrically connected to the first shaft portion 610 through the first adjusting pin 615 and the first locking member 660.

[0185] The second eccentric portion 650 includes a cylindrical second front large diameter portion 651, a cylindrical second small diameter portion 653 having a diameter smaller than that of the second front large diameter portion 651, and a cylindrical second rear large diameter portion 655 having the same diameter as that of the second front large diameter portion 651.

[0186] The second front large-diameter portion 651, the second small-diameter portion 653, and the second rear large-diameter portion 655 can be sequentially positioned along the front-rear direction. The centers of the second front large-diameter portion 651, the second small-diameter portion 653, and the second rear large-diameter portion 655 can be aligned with each other. The second small-diameter portion 653 can be located between the second front large-diameter portion 651 and the second rear large-diameter portion 655 to connect the second front large-diameter portion 651 and the second rear large-diameter portion 655.

[0187] The outer peripheral surface of the second small diameter portion 653 may be in a stepped shape that is collapsed relative to the outer peripheral surfaces of the second front large diameter portion 651 and the second rear large diameter portion 655. The second mounting groove 650c of the second eccentric portion 650 may be formed by being surrounded by the back of the second front large diameter portion 651, the outer peripheral surface of the second small diameter portion, and the front of the second rear large diameter portion 655.

[0188] The second front large-diameter portion 651 and the second small-diameter portion 653 are integrally formed from the beginning and therefore cannot be separated. The second small-diameter portion 653 and the second rear large-diameter portion 655 can be formed separately from each other and can be separated or joined together.

[0189] Reference Figure 7 and Figure 8 The first eccentric rotating component 600 includes first adjusting portions 615 and 650b. The first adjusting portions 615 and 650b may be disposed on at least any one of the first shaft portion 610, the first eccentric portion 640, and the second eccentric portion 650. For example, the first adjusting portions 615 and 650b may include the previously described first adjusting pin 615 and first adjusting groove 650b.

[0190] When the drive unit 500 rotates in one direction in its initial state, causing the first shaft 610 to rotate counterclockwise, the first adjustment units 615 and 650b can delay the eccentric rotation of the second eccentric part 650 after the first eccentric part 640 has rotated eccentrically by a certain angle. That is, after the first eccentric part 640 has rotated eccentrically by a certain angle in the counterclockwise direction, the first adjustment units 615 and 650b can cause the second eccentric part 650 to rotate eccentrically in the counterclockwise direction. For example, the certain angle can be 180 degrees. Thus, the first adjustment units 615 and 650b can create a phase difference between the first eccentric part 640 and the second eccentric part 650, which have the same phase in the initial state, allowing the first eccentric part 640 and the second eccentric part 650 to rotate eccentrically with different phases. Regarding the first eccentric part 640 and the second eccentric part 650, their respective rising and falling points can alternately face upwards and rotate eccentrically.

[0191] When the drive unit 500, which operates in one direction, rotates in another direction, causing the first shaft portion 610 to rotate clockwise, the first adjustment portions 615 and 650b enable the first eccentric portion 640 and the second eccentric portion 650, which rotate eccentrically with different phases, to align to the same phase or to rotate eccentrically together in a state of being aligned to the same phase.

[0192] Reference Figure 5 and Figure 8The second eccentric rotating component 700 includes a second shaft portion 710. The second shaft portion 710 may be a circular shaft that is elongated in the front-rear direction. The second shaft portion 710 may be rotatably disposed on the upper side of the base 10. For example, the second shaft portion 710 may be disposed through the mounting bracket 400 and located on the upper right side of the massage plate 300. The second shaft portion 710 may be configured to the same height as the first shaft portion 610. The second shaft portion 710 may be located side-by-side to the right of the first shaft portion 610. The second shaft portion 710 may be positioned parallel to the first shaft portion 610.

[0193] The second shaft portion 710 rotates under the drive of the drive unit 500. For example, the second shaft portion 710 can rotate in one direction or another in conjunction with the rotation direction of the drive unit 500 when it is operating. The second shaft portion 710 can rotate simultaneously with the first shaft portion 610, or it can rotate in the opposite direction to the first shaft portion 610. For example, when the drive unit 500 rotates in one direction, the second shaft portion 710 can rotate clockwise, while the first shaft portion 610 can rotate counterclockwise. When the drive unit 500 rotates in the opposite direction (i.e., another direction), the second shaft portion 710 can rotate counterclockwise, while the first shaft portion 610 can rotate clockwise. That is, the drive unit 500, the second shaft portion 710, and the first shaft portion 610 can be linked together. The second shaft 710 receives rotational force from the drive unit 500 and rotates, thereby enabling the third eccentric portion 740 and the fourth eccentric portion 750 to rotate eccentrically as described below.

[0194] A third retaining pin 711 may be connected to the second shaft portion 710. The third retaining pin 711 may be a cylindrical pin. The third retaining pin 711 may be formed to extend from one side to the other. The third retaining pin 711 may be inserted into a third retaining pin hole 711a formed on the rear side of the second shaft portion 710 for connection. The third retaining pin hole 711a may be formed to extend through the second shaft portion 710 in the radial direction. The third retaining pin 711 may be formed to be longer than the diameter of the second shaft portion 710 in the length direction. The third retaining pin 711 may be inserted into the third retaining pin hole 711a and at least one end of the third retaining pin 711 may protrude outward toward the outer peripheral surface of the second shaft portion 710. For example, at least one end of the third retaining pin 711 may protrude from the third retaining pin hole 711a.

[0195] A fourth retaining pin 713 may be connected to the second shaft portion 710. The fourth retaining pin 713 may be a cylindrical pin. The fourth retaining pin 713 may be formed to extend from one side to the other. The fourth retaining pin 713 may be inserted into a fourth retaining pin hole 713a formed on the rear side of the second shaft portion 710 for connection. The fourth retaining pin hole 713a may be located on the rear side of the third retaining pin hole 711a. The fourth retaining pin hole 713a may be formed to extend through the second shaft portion 710 in the radial direction. The fourth retaining pin 713 may be formed to be longer than the diameter of the second shaft portion 710 in the length direction. The fourth retaining pin 713 may be inserted into the fourth retaining pin hole 713a and at least one end of the fourth retaining pin 713 may protrude outward toward the outer side of the outer peripheral surface of the second shaft portion 710. For example, at least one end of the fourth retaining pin 713 may protrude from the fourth retaining pin hole 713a.

[0196] A second adjusting pin 715 can be connected to the second shaft portion 710. The second adjusting pin 715 can be a cylindrical pin. The second adjusting pin 715 can be formed to extend from one side to the other. The second adjusting pin 715 can be inserted into a second adjusting pin hole 715a formed on the front side of the second shaft portion 710 for connection. The second adjusting pin hole 715a can be located on the front side of the third fixing pin hole 711a. The second adjusting pin hole 715a can be formed to extend through the second shaft portion 710 in the radial direction. The second adjusting pin 715 can be formed to be longer than the diameter of the second shaft portion 710 in the length direction. The second adjusting pin 715 can be inserted into the second adjusting pin hole 715a and one end of the second adjusting pin 715 protrudes outward toward the outer side of the outer peripheral surface of the second shaft portion 710. For example, the left end of the second adjusting pin 715 can protrude toward the left side of the second adjusting pin hole 715a. The second adjusting pin 715 can be accommodated in the second adjusting groove 740b described below.

[0197] A second insert groove 717 is formed in the second shaft portion 710. The second insert groove 717 may be formed by being recessed along the entire circumference of the outer peripheral surface of the second shaft portion 710. The second insert groove 717 may be formed in the form of a slit. Multiple second insert grooves 717 may be provided. For example, five second insert grooves 717 may be provided. Two second insert grooves 717 may be formed spaced apart at the front portion of the second shaft portion 710, and three second insert grooves 717 may be formed spaced apart at the rear portion of the second shaft portion 710. The spacing between each second insert groove 717 may vary as needed.

[0198] A second retaining member 760 can be inserted into the second inserting groove 717. The second retaining member 760 is inserted into each of the second inserting grooves 717, thereby connecting to the second shaft portion 710. The second retaining member 760 connected to the second inserting groove 717 can be formed as a flange protruding from the outer peripheral surface of the second shaft portion 710 toward the radial direction. The second retaining member 760 can constrain each component mounted on the outer peripheral surface of the second shaft portion 710 to a predetermined position on the second shaft portion 710. The second retaining member 760 can be an open ring. The second retaining member 760 and the second inserting groove 717 can be provided on the second shaft portion 710 corresponding to the positions where they are connected to the third sleeve 770, the third eccentric portion 740, the fourth eccentric portion 750, the second linkage gear 730, and the fourth sleeve 780, respectively.

[0199] The second shaft portion 710 can be inserted into the second bearing 720. At least one second bearing 720 can be installed at the front, central, and rear portions of the second shaft portion 710. For example, one second bearing 720 can be installed at the front and rear portions of the second shaft portion 710, and two second bearings 720 can be installed at the central portion of the second shaft portion 710.

[0200] The lower part of the second bearing 720, which is installed at the front of the second shaft portion 710, can be inserted into the right-side first shaft support groove 441 of the mounting bracket 400. The lower part of the second bearing 720, which is installed at the center of the second shaft portion 710, can be inserted into the right-side second shaft support cover 451 of the mounting bracket 400. The lower part of the second bearing 720, which is installed at the rear of the second shaft portion 710, can be inserted into the right-side third shaft support groove 461 of the mounting bracket 400. In this way, the second shaft portion 710 can be rotatably supported by the first shaft support portion 440, the second shaft support portion 450, and the third shaft support portion 460 of the mounting bracket 400 through each of the second bearings 720.

[0201] The first shaft support portion 440, the second shaft support portion 450, and the third shaft support portion 460 used to support the second shaft portion 710 can be connected to the first shaft support cover 440a, the second shaft support cover 450a, and the third shaft support cover 460a in a corresponding manner. The upper part of the second bearing 720 installed at the front of the second shaft portion 710 can be inserted into the fourth shaft support groove 441a on the right side. The upper part of the second bearing 720 installed at the center of the second shaft portion 710 can be inserted into the fifth shaft support groove 451a on the right side. The upper part of the second bearing 720 installed at the rear of the second shaft portion 710 can be inserted into the sixth shaft support groove 461a on the right side. Each of the second bearings 720 and the second shaft portion 710 supported therethrough corresponds to the first shaft support portion 440, the second shaft support portion 450 and the third shaft support portion 460 and is connected to the first shaft support cover 440a, the second shaft support cover 450a and the third shaft support cover 460a, so that it can be stably supported and will not detach from the right side of the bracket 400.

[0202] A third sleeve 770 can be embedded in the second shaft portion 710. The third sleeve 770 can be embedded in the front side of the second shaft portion 710. The third sleeve 770 can be located adjacent to the front face of the second bearing 720 mounted on the front face of the second shaft portion 710. The third sleeve 770 can be located at the rear end of the corresponding first insertion groove 617. For example, the front face of the third sleeve 770 can be located at the rear end of the first second insertion groove 717 formed in the second shaft portion 710 from the front. The front face of the third sleeve 770 is held in place by a second locking member 760 inserted into the first second insertion groove 717 from the front, thereby restricting the forward movement of the third sleeve 770 while connected to the second shaft portion 710.

[0203] A fourth sleeve 780 can be embedded in the second shaft portion 710. The fourth sleeve 780 can be embedded in the rear side of the second shaft portion 710. The fourth sleeve 780 can be located adjacent to the back side of the second bearing 720 mounted on the rear side of the second shaft portion 710. The fourth sleeve 780 can be located at the front end of the corresponding second insertion groove 717. For example, the back side of the fourth sleeve 780 can be located at the front end of the fifth second insertion groove 717 formed in the second shaft portion 710 from the front. The back side of the fourth sleeve 780 is locked by a second locking member 760 inserted into the fifth second insertion groove 717 from the front, thereby restricting the rearward movement of the fourth sleeve 780 when connected to the second shaft portion 710.

[0204] A sensing blade 790 is provided on the second shaft portion 710. The sensing blade 790 can be fixed to the front end of the second shaft portion 710. The sensing blade 790 can rotate together with the second shaft portion 710 when the second shaft portion 710 rotates. The rotation state of the sensing blade 790 can be sensed by the rotation sensing sensor unit 443, thereby the rotation sensing sensor unit 443 can sense the rotation state of the first shaft portion 610 and the second shaft portion 710 that rotate together with the sensing blade 790.

[0205] Reference Figure 5 and Figure 8 The second eccentric rotating component 700 includes a second linkage gear 730. The second linkage gear 730 is provided for linkage between the first eccentric rotating component 600 and the second eccentric rotating component 700. The second linkage gear 730 can be a spur gear. The lower part of the second linkage gear 730 can mesh with the upper part of the output gear 530. The left side of the second linkage gear 730 can mesh with the right side of the first linkage gear 630. The second linkage gear 730 can rotate in the opposite direction to the first linkage gear 630. For example, when the second linkage gear 730 rotates clockwise, the first linkage gear 630 can rotate counterclockwise. Conversely, when the second linkage gear 730 rotates counterclockwise, the first linkage gear 630 can rotate clockwise. The second linkage gear 730 can use the rotational force provided by the drive unit 500 to rotate the second shaft portion 710, and can transmit the rotational force provided by the drive unit 500 to the first shaft portion 610 through the first linkage gear 630.

[0206] A second shaft hole 731 may be formed in the second linkage gear 730. The second shaft hole 731 may be formed at the center of the second linkage gear 730. The second shaft hole 731 may be formed to pass through the second linkage gear 730 in the front-back direction.

[0207] A second pin constraint groove 733 may be formed in the second linkage gear 730. The second pin constraint groove 733 is provided to fix the second linkage gear 730 to the second shaft portion 710. The second pin constraint groove 733 may be formed recessed towards the rearward side on the front surface of the second linkage gear 730. The second pin constraint groove 733 may be formed transversely through the second shaft hole 731 on one side of the circumference of the second shaft hole 731 and on the opposite side of the circumference. The second pin constraint groove 733 may be open towards the frontward side and may communicate directly with the second shaft hole 731. The width of the second pin constraint groove 733 may correspond to the same diameter as the fourth fixing pin 713.

[0208] The second linkage gear 730 can be connected to the rear portion of the second shaft portion 710. The second shaft portion 710 can be inserted into the second linkage gear 730 through the second shaft hole 731. The second linkage gear 730 can be located between the second bearing 720 disposed in the central portion of the second shaft portion 710 and the second bearing 720 disposed in the rear portion of the second shaft portion 710. The second linkage gear 730 can be located between the second shaft support portion 450 and the third shaft support portion 460. The lower end of the second linkage gear 730 can be accommodated in the second through hole 413. The second linkage gear 730 can avoid interference from the mounting plate 410 due to the second through hole 413.

[0209] The second linkage gear 730 can mesh with the output gear 530 located at the lower part through the setting hole 310 and the second through hole 413. Therefore, the second linkage gear 730 can receive the rotational force transmitted from the drive motor 520 and rotate, and transmit the transmitted rotational force to the first linkage gear 630, thereby enabling the first linkage gear 630 and the first shaft portion 610 fixed to the first linkage gear 630 to rotate together.

[0210] A fourth fixing pin 713, protruding from the second shaft portion 710, can be inserted into the second pin constraint groove 733 of the second linkage gear 730. The inner back surface (inner rear bottom surface) of the second pin constraint groove 733 of the second linkage gear 730 is locked by the fourth fixing pin 713, thereby restricting the forward movement of the second linkage gear 730 when connected to the second shaft portion 710. The two sides in the vertical width direction of the inner surface of the second pin constraint groove 733 of the second linkage gear 730 are locked by the fourth fixing pin 713, thereby allowing the second linkage gear 730 to rotate together with the second shaft portion 710.

[0211] The back side of the second linkage gear 730 can be located at the front end of its corresponding second insertion slot 717. For example, the back side of the second linkage gear 730 can be located at the front end of the fourth second insertion slot 717 formed in the second shaft portion 710 from the front. The back side of the second linkage gear 730 is locked by a second locking member 760 inserted into the fourth second insertion slot 717 from the front, thereby restricting the rearward movement of the second linkage gear 730 when connected to the second shaft portion 710.

[0212] In this way, the second linkage gear 730 can be connected to the second shaft portion 710 via the fourth fixing pin 713 and the second locking member 760.

[0213] Reference Figure 5 and Figure 8The second eccentric rotating component 700 includes eccentric portions 740 and 750. Eccentric portions 740 and 750 can be eccentrically connected to the second shaft portion 710. Multiple eccentric portions 740 and 750 eccentrically connected to the second shaft portion 710 can be provided. For example, two eccentric portions 740 and 750 eccentrically connected to the second shaft portion 710 can be provided and spaced apart in the front-rear direction.

[0214] The second eccentric rotating member 700 includes a third eccentric portion 740 connected to the front side of the second shaft portion 710. The third eccentric portion 740 may be formed as a cylinder having a central axis facing the front-rear direction when viewed as a whole. The third eccentric portion 740 may perform the function of raising and lowering the third massage member 830 described below by eccentric rotation with the rotation of the second shaft portion 710.

[0215] A third eccentric hole 740a may be formed in the third eccentric portion 740. The third eccentric hole 740a may be formed at a position offset from the center of the third eccentric portion 740. For example, the third eccentric hole 740a may be formed at a certain distance from the center of the third eccentric portion 740. The third eccentric hole 740a may be formed to extend through the third eccentric portion 740 in the front-back direction.

[0216] A second adjustment groove 740b may be formed in the third eccentric portion 740. The second adjustment groove 740b is provided to adjust the eccentric rotation of the third eccentric portion 740. The second adjustment groove 740b may be formed recessed towards the front side on the back surface of the third eccentric portion 740. The second adjustment groove 740b may be formed as an arch surrounding a portion of the circumference of the third eccentric hole 740a. The second adjustment groove 740b may be directly connected to the third eccentric hole 740a. The second adjustment groove 740b may be open towards the rear side. The second adjustment groove 740b may be formed such that the second adjustment pin 715 housed inside can rotate freely at a certain angle around the second shaft portion 710.

[0217] Inside the second adjusting groove 740b, a third locking surface 747, which forms the lower left surface when viewed from the initial state, and a fourth locking surface 749, which forms the lower right surface, can be formed. The vertical distance between the third locking surface 747 and the center of the third eccentric hole 740a is formed to be the same as the radius of the second adjusting pin 715, so that the second adjusting pin 715 can be appropriately placed on the third locking surface 747. The vertical distance between the fourth locking surface 749 and the center of the third eccentric hole 740a is formed to be the same as the radius of the second adjusting pin 715, so that the second adjusting pin 715 can be appropriately placed on the fourth locking surface 749. The third locking surface 747 and the fourth locking surface 749 can form an angle with each other. For example, the angle between the third locking surface 747 and the fourth locking surface 749 can be 180 degrees. The third locking surface 747 and the fourth locking surface 749 can be symmetrical about their respective centers. The third locking surface 747 and the fourth locking surface 749 can be located below the imaginary line connecting the center of the third eccentric portion 740 and the center of the third eccentric hole 740a, and are parallel to the aforementioned imaginary line. The third locking surface 747 and the fourth locking surface 749 can be configured horizontally in the initial state.

[0218] A third mounting groove 740c may be formed in the third eccentric portion 740. The third mounting groove 740c may be formed at the center of the outer peripheral surface of the third eccentric portion 740. The third mounting groove 740c may be formed as a recess along the entire circumference of the outer peripheral surface of the third eccentric portion 740. The third mounting groove 740c may be formed in the form of a closed curve on the outer peripheral surface of the third eccentric portion 740.

[0219] The third eccentric portion 740 can be connected to the front portion of the second shaft portion 710. The second shaft portion 710 can be inserted into the third eccentric portion 740 through the third eccentric hole 740a. The second shaft portion 710 is inserted into the third eccentric hole 740a, which is formed at a position offset from the center of the third eccentric portion 740, so that the third eccentric portion 740 can be eccentrically connected to the second shaft portion 710. The third eccentric portion 740 can be located between the second bearing 720 disposed at the front portion of the second shaft portion 710 and the second bearing 720 disposed at the center portion of the second shaft portion 710. The third eccentric portion 740 can be located between the first shaft support portion 440 and the second shaft support portion 450. The third eccentric portion 740 can be configured such that, in the initial state, the point on the outer peripheral surface of the third eccentric portion 740 furthest from the center of the second shaft portion 710 (hereinafter referred to as the "rising point of the third eccentric portion") faces to the left. For example, in the initial state, the rising and falling point of the third eccentric portion 740 can be located horizontally to the left of the center of the second shaft portion 710 and the center of the third eccentric hole 740a in a manner that faces the 9 o'clock direction when viewed from the front, and can be opposite to the rising and falling point of the first eccentric portion 640.

[0220] One end of the second adjusting pin 715 protruding from the second shaft portion 710 can be accommodated in the second adjusting groove 740b of the third eccentric portion 740. For example, the left end of the second adjusting pin 715 can be inserted into the second adjusting groove 740b, and the left end of the second adjusting pin 715 can be positioned on the third locking surface 747 inside the second adjusting groove 740b. The inner front surface (inner front side bottom surface) of the second adjusting groove 740b of the third eccentric portion 740 is locked by the second adjusting pin 715, thereby restricting the rearward movement of the third eccentric portion 740 when connected to the second shaft portion 710. The second adjusting pin 715 can rotate freely at a certain angle within the second adjusting groove 740b. For example, when the second shaft 710 rotates clockwise in the initial state, the second adjusting pin 715 can rotate 180 degrees from the third locking surface 747 to the fourth locking surface 749. After that, the third eccentric part 740 can be eccentrically rotated clockwise by pushing the fourth locking surface 749 in the clockwise direction.

[0221] The front of the third eccentric portion 740 can be located at the rear end of the corresponding second insert groove 717. For example, the front of the third eccentric portion 740 can be located at the rear end of the second second insert groove 717 from the front in each of the second insert grooves 717 formed in the second shaft portion 710. The front of the third eccentric portion 740 is locked by the second locking member 760 inserted into the second second insert groove 717 from the front, thereby restricting the movement of the third eccentric portion 740 toward the front side when connected to the second shaft portion 710.

[0222] In this way, the third eccentric portion 740 can be eccentrically connected to the second shaft portion 710 via the second adjusting pin 715 and the second locking member 760.

[0223] The third eccentric portion 740 may include a cylindrical third front large diameter portion 741, a cylindrical third small diameter portion 743 having a diameter smaller than that of the third front large diameter portion 741, and a cylindrical third rear large diameter portion 745 having the same diameter as that of the third front large diameter portion 741.

[0224] The third front large-diameter portion 741, the third small-diameter portion 743, and the third rear large-diameter portion 745 can be sequentially positioned along the front-rear direction. The centers of the third front large-diameter portion 741, the third small-diameter portion 743, and the third rear large-diameter portion 745 can be aligned with each other. The third small-diameter portion 743 can be located between the third front large-diameter portion 741 and the third rear large-diameter portion 745 to connect the third front large-diameter portion 741 and the third rear large-diameter portion 745.

[0225] The outer peripheral surface of the third small diameter portion 743 may be in a stepped shape that is collapsed relative to the outer peripheral surfaces of the third front large diameter portion 741 and the third rear large diameter portion 745. The third mounting groove 740c of the third eccentric portion 740 may be formed by being surrounded by the back of the third front large diameter portion 741, the outer peripheral surface of the third small diameter portion, and the front of the third rear large diameter portion 745.

[0226] The third front large diameter portion 741 and the third small diameter portion 743 are integrally formed from the beginning and therefore cannot be separated. The third small diameter portion 743 and the third rear large diameter portion 745 can be formed separately and can be separated or joined together.

[0227] The second eccentric rotating member 700 includes a fourth eccentric portion 750 connected to the rear side of the second shaft portion 710. The fourth eccentric portion 750 may be formed as a cylinder having a central axis pointing in the front-rear direction when viewed as a whole. The fourth eccentric portion 750 may perform the function of raising and lowering the fourth massage member 840 described below by eccentric rotation with the rotation of the second shaft portion 710.

[0228] A fourth eccentric hole 750a may be formed in the fourth eccentric portion 750. The fourth eccentric hole 750a may be formed at a position offset from the center of the fourth eccentric portion 750. For example, the fourth eccentric hole 750a may be formed at a certain distance from the center of the fourth eccentric portion 750. The fourth eccentric hole 750a may be formed to extend through the fourth eccentric portion 750 in the front-back direction.

[0229] A second pin retaining groove 750b may be formed in the fourth eccentric portion 750. The second pin retaining groove 750b is provided to fix the fourth eccentric portion 750 to the second shaft portion 710. The second pin retaining groove 750b may be formed recessed towards the rearward side on the front surface of the fourth eccentric portion 750. The second pin retaining groove 750b may be formed transversely through the fourth eccentric hole 750a on one side of the circumference and the opposite side of the circumference. The second pin retaining groove 750b may be formed to extend straight outward in a radial direction from the fourth eccentric hole 750a. The second pin retaining groove 750b may be open towards the front and may communicate directly with the fourth eccentric hole 750a. The width of the second pin retaining groove 750b may correspond to the same diameter as the second retaining pin 613.

[0230] A fourth mounting groove 750c may be formed in the fourth eccentric portion 750. The fourth mounting groove 750c may be formed at the center of the outer peripheral surface of the fourth eccentric portion 750. The fourth mounting groove 750c may be formed as a recess along the entire circumference of the outer peripheral surface of the fourth eccentric portion 750. The fourth mounting groove 750c may be formed in the form of a closed curve on the outer peripheral surface of the fourth eccentric portion 750.

[0231] The fourth eccentric portion 750 can be connected to the rear portion of the second shaft portion 710. The second shaft portion 710 can be inserted into the fourth eccentric portion 750 through the fourth eccentric hole 750a. The second shaft portion 710 is inserted into the fourth eccentric hole 750a, which is formed at a position offset from the center of the fourth eccentric portion 750, so that the fourth eccentric portion 750 can be eccentrically connected to the second shaft portion 710. The fourth eccentric portion 750 can be located between the second bearing 720 disposed in the central portion of the second shaft portion 710 and the first linkage gear 630 disposed in the rear portion of the second shaft portion 710. The fourth eccentric portion 750 can be located between the second shaft support portion 450 and the third shaft support portion 460. The fourth eccentric portion 750 can be configured such that, in the initial state, the point on the outer peripheral surface of the fourth eccentric portion 750 furthest from the center of the second shaft portion 710 (hereinafter referred to as the "rising point of the fourth eccentric portion") faces to the left. For example, in the initial state, the rising and falling point of the fourth eccentric part 750 can be located horizontally to the left of the center of the second shaft part 710 and the center of the third eccentric hole 740a in a manner that faces the 9 o'clock direction when viewed from the front, and can be opposite to the rising and falling point of the second eccentric part 650.

[0232] In the initial state, the third eccentric portion 740 and the fourth eccentric portion 750 can be positioned side-by-side in the front-rear direction. The third eccentric portion 740 and the fourth eccentric portion 750 can have the same phase relative to the second shaft portion 710. The third eccentric portion 740 and the fourth eccentric portion 750 can be located to the sides of the first eccentric portion 640 and the second eccentric portion 650. For example, the third eccentric portion 740 can be located to the right of the first eccentric portion 640. For example, the fourth eccentric portion 750 can be located to the right of the second eccentric portion 650. The first eccentric portion 640 and the third eccentric portion 740 can be positioned side-by-side in the left-right direction. The second eccentric portion 650 and the fourth eccentric portion 750 can be positioned side-by-side in the left-right direction. The first eccentric portion 640, the second eccentric portion 650, the third eccentric portion 740, and the fourth eccentric portion 750 can be arranged in a square shape at the same height. The rising and falling points of the first eccentric part 640, the second eccentric part 650, the third eccentric part 740, and the fourth eccentric part 750 can be kept horizontal and their respective heights can be the same.

[0233] A second fixing pin 613 protruding from the second shaft portion 710 can be inserted into the second pin fixing groove 750b of the fourth eccentric portion 750. The inner back surface (inner rear bottom surface) of the second pin fixing groove 750b is locked by the second fixing pin 613, thereby restricting the forward movement of the fourth eccentric portion 750 when connected to the second shaft portion 710. The two sides in the vertical width direction of the interior of the second pin fixing groove 750b are locked by the first fixing pin 611, thereby allowing the fourth eccentric portion 750 to rotate eccentrically with the second shaft portion 710 in the same direction as the rotation direction of the second shaft portion 710.

[0234] The back surface of the fourth eccentric portion 750 can be located at the front end of the corresponding second insert groove 717. For example, the back surface of the fourth eccentric portion 750 can be located at the front end of the third second insert groove 717 formed in the second shaft portion 710 from the front. The back surface of the fourth eccentric portion 750 is locked by a second locking member 760 inserted into the third second insert groove 717 from the front, thereby restricting the rearward movement of the fourth eccentric portion 750 when connected to the second shaft portion 710.

[0235] In this way, the fourth eccentric portion 750 can be eccentrically connected to the second shaft portion 710 through the second fixing pin 613 and the second locking member 760.

[0236] The fourth eccentric portion 750 includes a cylindrical fourth front large diameter portion 751, a cylindrical fourth small diameter portion 753 having a smaller diameter than the fourth front large diameter portion 751, and a cylindrical fourth rear large diameter portion 755 having the same diameter as the fourth front large diameter portion 751.

[0237] The fourth front large-diameter portion 751, the fourth small-diameter portion 753, and the fourth rear large-diameter portion 755 can be sequentially positioned along the front-rear direction. The centers of the fourth front large-diameter portion 751, the fourth small-diameter portion 753, and the fourth rear large-diameter portion 755 can be aligned with each other. The fourth small-diameter portion 753 can be located between the fourth front large-diameter portion 751 and the fourth rear large-diameter portion 755, thereby connecting the fourth front large-diameter portion 751 and the fourth rear large-diameter portion 755.

[0238] The outer peripheral surface of the fourth small diameter portion 753 may have a stepped shape that is collapsed relative to the outer peripheral surfaces of the fourth front large diameter portion 751 and the fourth rear large diameter portion 755. The fourth mounting groove 750c of the fourth eccentric portion 750 may be formed by being surrounded by the back of the fourth front large diameter portion 751, the outer peripheral surface of the fourth small diameter portion, and the front of the fourth rear large diameter portion 755.

[0239] The fourth front large-diameter portion 751 and the fourth small-diameter portion 753 can be formed separately and can be separated or joined together. The fourth small-diameter portion 753 and the fourth rear large-diameter portion 755 are formed integrally from the beginning and therefore cannot be separated.

[0240] The first eccentric portion 640, the second eccentric portion 650, the third eccentric portion 740, and the fourth eccentric portion 750 can be formed to the same size. The first eccentric portion 640 and the fourth eccentric portion 750 can be identical. The second eccentric portion 650 and the third eccentric portion 740 can be identical. In the initial state, the first eccentric portion 640, the second eccentric portion 650, the third eccentric portion 740, and the fourth eccentric portion 750 can be arranged in a square pattern of 2 rows and 2 columns at the same height. Thus, the first massage member 810, the second massage member 820, the third massage member 830, and the fourth massage member 840, which are connected to the first eccentric portion 640, the second eccentric portion 650, the third eccentric portion 740, and the fourth eccentric portion 750 respectively, can be arranged in the same pattern as the first eccentric portion 640, the second eccentric portion 650, the third eccentric portion 740, and the fourth eccentric portion 750.

[0241] Reference Figure 7 and Figure 8 The second eccentric rotating component 700 includes second adjusting portions 715 and 740b. The second adjusting portions 715 and 740b may be disposed on at least any one of the second shaft portion 710, the third eccentric portion 740, and the fourth eccentric portion 750. For example, the second adjusting portions 715 and 740b may include the previously described second adjusting pin 715 and second adjusting groove 740b.

[0242] When the drive unit 500 rotates in one direction in its initial state, causing the second shaft 710 to rotate clockwise, the second adjustment units 715 and 740b can delay the eccentric rotation of the third eccentric part 740 until the fourth eccentric part 750 has rotated eccentrically by a certain angle. That is, after the fourth eccentric part 750 has rotated eccentrically in the clockwise direction by a certain angle, the second adjustment units 715 and 740b can cause the third eccentric part 740 to rotate eccentrically in the clockwise direction. For example, the certain angle can be 180 degrees. Thus, the second adjustment units 715 and 740b can create a phase difference between the third eccentric part 740 and the fourth eccentric part 750, which have the same phase in the initial state, allowing the third eccentric part 740 and the fourth eccentric part 750 to rotate eccentrically with different phases. Regarding the third eccentric part 740 and the fourth eccentric part 750, their respective rising and falling points can alternately face upwards and rotate eccentrically.

[0243] When the drive unit 500, which operates in one direction, rotates in another direction, causing the second shaft 710 to rotate counterclockwise, the second adjustment units 715 and 740b enable the third eccentric part 740 and the fourth eccentric part 750, which rotate eccentrically with different phases, to align to the same phase or to rotate eccentrically together in a state of being aligned to the same phase.

[0244] Reference Figure 1 , Figure 2 as well as Figures 5 to 8 The massage module 1 includes massage components 810, 820, 830, and 840. Massage components 810, 820, 830, and 840 are mounted on the upper part of the base 10 in a height-adjustable manner. Massage components 810, 820, 830, and 840 are mounted on the upper part of the massage plate 300 after being installed behind eccentric portions 640, 650, 740, and 750. Massage components 810, 820, 830, and 840 can perform two-dimensional circular motion and rise and fall with the eccentric rotation of eccentric portions 640, 650, 740, and 750. Massage components 810, 820, 830, and 840 can maintain a certain posture and rise and fall without tilting to the left or right by the posture holding unit 900. Massage components 810, 820, 830, and 840 can be configured to directly apply pressure to the user's back through the height-adjusting motion during massage or heat therapy.

[0245] Multiple massage components 810, 820, 830, and 840 can be provided corresponding to the eccentric portions 640, 650, 740, and 750. For example, four massage components 810, 820, 830, and 840 can be provided so that they can be respectively mounted on the first eccentric portion 640, the second eccentric portion 650, the third eccentric portion 740, and the fourth eccentric portion 750.

[0246] Reference Figures 6 to 8 Massage components 810, 820, 830, and 840 include a first massage component 810. The first massage component 810 can be mounted and connected to the first eccentric portion 640.

[0247] The first massage component 810 includes: a hollow circular first insert ring 811, a first connecting portion 813 that protrudes vertically upward from the outer peripheral surface of the first insert ring 811, a first roller bracket 815 connected to the upper end of the first connecting portion 813, and a first roller 817 that is rotatably connected to the first roller bracket 815 via a horizontal axis and is capable of directly applying pressure to the massage area.

[0248] The first insert ring 811 is inserted into the first mounting groove 640c of the first eccentric portion 640, thereby allowing the first massage component 810 to be rotatably connected to the first eccentric portion 640. When connecting the first insert ring 811 and the first eccentric portion 640, the first insert ring 811, housed within the first mounting groove 640c, can enclose the first small diameter portion 643. For example, the first small diameter portion 643 can be inserted into the hollow of the first insert ring 811. The first insert ring 811 is secured by two sides in the front-rear width direction within the first mounting groove 640c, thereby restraining it within the first mounting groove 640c. The first massage component 810 can be attached to and detached from the first eccentric portion 640 by connecting or separating the first front large diameter portion 641 and the first small diameter portion 643.

[0249] Massage components 810, 820, 830, and 840 include a second massage component 820. The second massage component 820 can be mounted and connected to the second eccentric portion 650.

[0250] The second massage component 820 includes: a hollow circular second insert ring 821, a second connecting portion 823 that protrudes vertically upward from the outer peripheral surface of the second insert ring 821, a second roller bracket 825 connected to the upper end of the second connecting portion 823, and a second roller 827 that can be rotatably connected to the second roller bracket 825 via a horizontal axis and can directly apply pressure to the massage area.

[0251] The second insert ring 821 is inserted into the second mounting groove 650c of the second eccentric portion 650, thereby allowing the second massage member 820 to be rotatably connected to the second eccentric portion 650. When connecting the second insert ring 821 and the second eccentric portion 650, the second insert ring 821, housed within the second mounting groove 650c, can enclose the second minor diameter portion 653. For example, the second minor diameter portion 653 can be inserted into the hollow of the second insert ring 821. The second insert ring 821 is secured by two sides in the front-rear width direction within the second mounting groove 650c, thereby restraining it within the second mounting groove 650c. The second massage member 820 can be attached to and detached from the second eccentric portion 650 through the connection or separation between the second rear major diameter portion 655 and the second minor diameter portion 653.

[0252] Massage components 810, 820, 830, and 840 include a third massage component 830. The third massage component 830 can be mounted and connected to the third eccentric portion 740.

[0253] The third massage component 830 may include a hollow circular third insert ring 831, a third connecting portion 833 that protrudes vertically upward from the outer peripheral surface of the third insert ring 831, a third roller bracket 835 connected to the upper end of the third connecting portion 833, and a third roller 837 that is rotatably connected to the third roller bracket 835 via a horizontal axis and is capable of directly applying pressure to the massage area.

[0254] The third insert ring 831 is inserted into the third mounting groove 740c of the third eccentric portion 740, thereby allowing the third massage component 830 to be rotatably connected to the third eccentric portion 740. When connecting the third insert ring 831 and the third eccentric portion 740, the third insert ring 831 is accommodated within the third mounting groove 740c and can enclose the third small diameter portion 743. For example, the third small diameter portion 743 can be inserted into the hollow of the third insert ring 831. The third insert ring 831 is secured by two sides in the front-rear width direction within the third mounting groove 740c, thereby constraining it within the third mounting groove 740c. The third massage component 830 can be attached to and detached from the third eccentric portion 740 by connecting or separating the third front large diameter portion 741 and the third small diameter portion 743.

[0255] Massage components 810, 820, 830, and 840 include a fourth massage component 840. The fourth massage component 840 can be mounted and connected to the fourth eccentric portion 750.

[0256] The fourth massage component 840 may include a hollow circular fourth insert ring 840, a fourth connecting portion 843 that protrudes vertically upward from the outer peripheral surface of the fourth insert ring 840, a fourth roller bracket 845 connected to the upper end of the fourth connecting portion 843, and a fourth roller 847 that is rotatably connected to the fourth roller bracket 845 via a horizontal axis and is capable of directly applying pressure to the massage area.

[0257] The fourth insert ring 840 is inserted into the fourth mounting groove 750c of the fourth eccentric portion 750, thereby allowing the fourth massage member 840 to be rotatably connected to the fourth eccentric portion 750. When connecting the fourth insert ring 840 and the fourth eccentric portion 750, the fourth insert ring 840 is accommodated within the fourth mounting groove 750c and can enclose the fourth small diameter portion 753. For example, the fourth small diameter portion 753 can be inserted into the hollow of the fourth insert ring 840. The fourth insert ring 840 is secured by two sides in the front-rear width direction within the fourth mounting groove 750c, thereby restraining it within the fourth mounting groove 750c. The fourth massage member 840 can be attached to and detached from the fourth eccentric portion 750 through the connection or separation between the third rear large diameter portion 745 and the fourth small diameter portion 753.

[0258] The first massage component 810, the second massage component 820, the third massage component 830, and the fourth massage component 840 can be identical. In their initial state, the first massage component 810, the second massage component 820, the third massage component 830, and the fourth massage component 840 can be arranged in a square configuration of 2 rows and 2 columns at the same height as the first eccentric portion 640, the second eccentric portion 650, the third eccentric portion 740, and the fourth eccentric portion 750.

[0259] The first massage component 810, the second massage component 820, the third massage component 830, and the fourth massage component 840 can rise and fall with the eccentric rotation of their respective first eccentric portion 640, second eccentric portion 650, third eccentric portion 740, and fourth eccentric portion 750. More specifically, the first massage component 810, the second massage component 820, the third massage component 830, and the fourth massage component 840 can rise and fall according to the height or position of the respective rising and falling points of the eccentrically rotating first eccentric portion 640, second eccentric portion 650, third eccentric portion 740, and fourth eccentric portion 750. For example, the first massage component 810, the second massage component 820, the third massage component 830, and the fourth massage component 840 can be in the highest position (at the top dead center) when the respective lifting points of the first eccentric portion 640, the second eccentric portion 650, the third eccentric portion 740, and the fourth eccentric portion 750 are facing the 12 o'clock direction; in the lowest position (at the bottom dead center) when facing the 6 o'clock direction; and in an intermediate position (between the top dead center and the bottom dead center) when facing the 3 o'clock or 9 o'clock direction. At this time, the first massage component 810, the second massage component 820, the third massage component 830, and the fourth massage component 840 can each maintain a horizontal posture without tilting by connecting to the posture holding unit 900 described below, rotating and lifting together with the first eccentric portion 640, the second eccentric portion 650, the third eccentric portion 740, and the fourth eccentric portion 750 in a clockwise or counterclockwise direction. For example, the first massage component 810, the second massage component 820, the third massage component 830, and the fourth massage component 840 can be raised and lowered while keeping their respective rollers 817, 827, 837, and 847 horizontal.

[0260] Reference Figure 2 , Figure 5 as well as Figure 9The massage module 1 includes a posture holding unit 900. The posture holding unit 900 can be connected to the upper part of the mounting bracket 400. The posture holding unit 900 can be fixedly mounted in a configuration perpendicular to the first side plate 420, the second side plate 430, and the support rod 470. When the massage components 810, 820, 830, and 840 are raised or lowered, the posture holding unit 900 can maintain a certain posture during the raising and lowering process. For example, the posture holding unit 900 can guide the raising and lowering movements of the massage components 810, 820, 830, and 840 in a manner that prevents them from tilting left or right due to the rotation of the eccentric rotating components 600 and 700.

[0261] The attitude holding unit 900 includes a first guide member 910 and a second guide member 920 disposed parallel to and spaced apart from the first guide member 910 on its rear side. The first guide member 910 and the second guide member 920 may be substantially the same.

[0262] Reference Figure 5 and Figure 9 The first guide member 910 includes a first guide rod 911. The first guide rod 911 can be formed into a rectangular rod shape that is elongated in the left-right direction. The first guide rod 911 can be configured to be orthogonal to the first side plate 420, the second side plate 430, and the support plate 103b. The left side portion of the first guide rod 911 can be placed at the front of the upper surface of the first side plate 420 and screwed to the first side plate 420. The right side portion of the first guide rod 911 can be placed at the front of the upper surface of the second side plate 430 and screwed to the first side plate 420. The central portion of the first guide rod 911 can be supported at the front of the upper surface of the support rod 470.

[0263] The first guide rod 911 includes a first guide groove 911a. The first guide groove 911a is formed by cutting open the upper rear side corner portion of the first guide rod 911 into a collapsed shape. The first guide groove 911a can be formed on the first guide rod 911 in a way that extends in the left-right direction. The first guide groove 911a can be open in a shape where the upper and rear portions are directly connected.

[0264] Reference Figure 5 and Figure 9The first guide member 910 includes a second guide rod 913. The second guide rod 913 can be formed as a rectangular rod elongated in the left-right direction. The second guide rod 913 can be spaced apart and positioned behind the first guide rod 911. The second guide rod 913 can be configured parallel to the first guide rod 911. The second guide rod 913 can be configured orthogonal to the first side plate 420, the second side plate 430, and the support plate 103b. The left side portion of the second guide rod 913 can be positioned at the front of the upper surface of the first side plate 420 and screwed to the first side plate 420. The right side portion of the second guide rod 913 can be positioned at the front of the upper surface of the second side plate 430 and screwed to the first side plate 420. The central portion of the second guide rod 913 can be supported on the front of the upper surface of the support rod 470.

[0265] The second guide rod 913 includes a second guide groove 913a. The second guide groove 913a is formed by cutting open the upper front side corner portion of the second guide rod 913 into a collapsed shape. The second guide groove 913a can be formed on the second guide rod 913 in a lengthwise direction. The second guide groove 913a can be open, with the upper and front portions directly connected. The second guide rod 913 and the second guide groove 913a can be formed symmetrically with the first guide rod 911 and the first guide groove 911a in the front-back direction.

[0266] Reference Figure 5 and Figure 9 The second guide member 920 includes a third guide rod 921. The third guide rod 921 can be formed as a rectangular rod elongated in the left-right direction. The third guide rod 921 can be disposed parallel to and spaced apart from the second guide rod 913 at the rear side of the second guide rod 913. The third guide rod 921 can be configured orthogonal to the first side plate 420, the second side plate 430, and the support plate 103b. The left side portion of the third guide rod 921 can be placed behind the upper surface of the first side plate 420 and screwed to the first side plate 420. The right side portion of the third guide rod 921 can be placed behind the upper surface of the second side plate 430 and screwed to the first side plate 420. The central portion of the third guide rod 921 can be supported behind the upper surface of the support rod 470.

[0267] The third guide rod 921 includes a third guide groove 921a. The third guide groove 921a is formed by cutting open the upper rear side corner portion of the third guide rod 921 into a collapsed shape. The third guide groove 921a can be formed on the third guide rod 921 in a way that extends in the left-right direction. The third guide groove 921a can be open, with the upper and rear portions directly connected. The third guide rod 921 and the third guide groove 921a can have substantially the same shape as the first guide rod 911 and the first guide groove 911a. Regarding the first guide groove 911a and the third guide groove 921a, the lower, front, left, and right sides can be closed, while the upper and rear sides can be open.

[0268] Reference Figure 5 and Figure 9 The second guide member 920 includes a fourth guide rod 923. The fourth guide rod 923 can be formed as a rectangular rod elongated in the left-right direction. The fourth guide rod 923 can be disposed parallel to and spaced apart from the third guide rod 921 on its rear side. The fourth guide rod 923 can be configured orthogonal to the first side plate 420, the second side plate 430, and the support plate 103b. The left side portion of the fourth guide rod 923 can be placed behind the upper surface of the first side plate 420 and screwed to the first side plate 420. The right side portion of the fourth guide rod 923 can be placed behind the upper surface of the second side plate 430 and screwed to the first side plate 420. The central portion of the fourth guide rod 923 can be supported behind the upper surface of the support rod 470.

[0269] The fourth guide rod 923 includes a fourth guide groove 923a. The fourth guide groove 923a is formed by cutting open the upper front side corner portion of the fourth guide rod 923 to create a collapsed shape. The fourth guide groove 923a can be formed on the fourth guide rod 923 in a lengthwise direction. The fourth guide groove 923a can be open, with the upper and front portions directly connected. The fourth guide rod 923 and the fourth guide groove 923a can be formed in a symmetrical shape with the third guide rod 921 and the third guide groove 921a in the longitudinal direction. The fourth guide rod 923 and the fourth guide groove 923a can have a substantially identical shape to the second guide rod 913 and the second guide groove 913a. Regarding the second guide groove 913a and the fourth guide groove 923a, the lower, rear, left, and right sides can be closed, while the upper and front sides can be open.

[0270] Reference Figure 5 and Figure 9 The posture holding unit 900 includes first constraint members 930 and 937. The first constraint members 930 and 937 can be provided to constrain the first massage member 810 into a certain posture. The first constraint members 930 and 937 can be accommodated on the left side of the first guide member 910 and can move in a left-right sliding manner.

[0271] The first restraint components 930 and 937 include a first retainer 930. The first retainer 930 can be located between the first guide rod 911 and the second guide rod 913. The first retainer 930 can be received in the first guide groove 911a of the first guide rod 911 and the second guide groove 913a of the second guide rod 913 with the first massage component 810 embedded inside it. The first retainer 930 can slide in the left-right direction while positioned on the inner lower surface of the first guide groove 911a and the inner lower surface of the second guide groove 913a.

[0272] The first retainer 930 has a first cut portion 930a formed in its central portion for the insertion of the first connecting portion 813 of the first massage member 810. The first cut portion 930a can be formed to extend vertically through the first retainer 930 while having an open left side. The first retainer 930 can be formed into a block shape that is bent into an inverted "U" shape when viewed from above. The first connecting portion 813 of the first massage member 810 can be inserted into the first cut portion 930a through the open left side of the first cut portion 930a, thereby embedding itself into the first retainer 930.

[0273] The first retainer 930 includes: a first front extension 931 extending elongated in the left-right direction; a first rear extension 933 extending elongated in the left-right direction and disposed on the rear side of the first front extension 931; and a first vertical extension 935 perpendicularly connected to the first front extension 931 and the first rear extension 933. The first front extension 931 and the first rear extension 933 may be formed parallel to each other with the same length. The first front extension 931 and the first rear extension 933 may be spaced apart in the front-rear direction. The first front extension 931 may be received in a first guide groove 911a, and the first rear extension 933 may be received in a second guide groove 913a. The front end of the first vertical extension 935 may be directly connected to the right end of the first front extension 931, and the rear end of the first vertical extension 935 may be directly connected to the right end of the first rear extension 933.

[0274] The first front extension 931 may have a first front mating groove 931a recessed upward on the lower surface of its left end. The first rear extension 933 may have a first rear mating groove 933a recessed upward on the lower surface of its left end. The lower and rear portions of the first front mating groove 931a may be open. The lower and front portions of the first rear mating groove 933a may be open.

[0275] Reference Figure 5 and Figure 9, the first constraint members 930, 937 include a first locking block 937. The first locking block 937 may be a rectangular parallelepiped-shaped block. One end and the other end of the first locking block 937 may be received in the first front mating groove 931a and the first rear mating groove 933a. For example, the front end portion of the first locking block 937 is received in the first front mating groove 931a and the rear end portion is received in the first rear mating groove 933a, so that it can cooperate with the first cage 930. The first locking block 937 may close the open left side portion of the first cutout portion 930a.

[0276] The first cutout portion 930a may be a square hole according to the mating of the first locking block 937 to the first cage 930. For example, the mutually mating first cage 930 and the first locking block 937 may have a square ring shape with a square hole formed in the center. For example, the mutually mating first cage 930 and the first locking block 937 may be formed in a 'ロ' shape when viewed from above.

[0277] The first locking block 937 may constrain the first connecting portion 813 of the first massage member 810 inserted into the first cutout portion 930a within the first cutout portion 930a. When the first cage 930 and the first locking block 937 are mated, the first connecting portion 813 of the first massage member 810 inserted into the first cutout portion 930a is surrounded and constrained by the first cage 930 and the first locking block 937, and thus is supported in a vertical state within the first cutout portion 930a, and can move in the vertical direction, and cannot be disengaged in the horizontal direction within the first cutout portion 930a.

[0278] Refer to Figure 5 and Figure 9 , the attitude holding unit 900 includes second constraint members 940, 947. The second constraint members 940, 947 may be provided to constrain the second massage member 820 into a certain attitude. The second constraint members 940, 947 may be received on the left side of the second guide member 920 and move in a left-right sliding manner.

[0279] The second constraint members 940, 947 include a second cage 940. The second cage 940 may be located between the third guide rod 921 and the fourth guide rod 923. The second cage 940 may be received in the third guide groove 921a of the third guide rod 921 and the fourth guide groove 923a of the fourth guide rod 923 in a state where the side with the second massage member 820 embedded therein is inside. The second cage 940 may move by sliding in the left-right direction in a state where it is placed on the inner lower surface of the third guide groove 921a and the inner lower surface of the fourth guide groove 923a.

[0280] The second retainer 940 has a second cutout 940a formed in its central portion for the insertion of the second connecting portion 823 of the second massage member 820. The second cutout 940a can be formed to extend vertically through the second retainer 940 while having an open left side. The second retainer 940 can be formed to be bent into an inverted "U" shape when viewed from above. The second connecting portion 823 of the second massage member 820 can be inserted into the second cutout 940a through the open left side of the second cutout 940a, thereby embedding itself into the second retainer 940.

[0281] The second retainer 940 includes: a second front extension 941 extending elongated in the left-right direction; a second rear extension 943 extending elongated in the left-right direction and disposed on the rear side of the second front extension 941; and a second vertical extension 945 perpendicularly connected to the second front extension 941 and the second rear extension 943. The second front extension 941 and the second rear extension 943 may be formed parallel to each other with the same length. The second front extension 941 and the second rear extension 943 may be spaced apart in the front-rear direction. The second front extension 941 may be received in a third guide groove 921a, and the second rear extension 943 may be received in a fourth guide groove 923a. The front end of the second vertical extension 945 may be directly connected to the left end of the second front extension 941, and the rear end of the second vertical extension 945 may be directly connected to the left end of the second rear extension 943.

[0282] The second front extension 941 may have a second front mating groove 941a recessed upward on the lower surface of its right end. The second rear extension 943 may have a second rear mating groove 943a recessed upward on the lower surface of its right end. The lower and rear portions of the second front mating groove 941a may be open. The lower and front portions of the second rear mating groove 943a may be open.

[0283] Reference Figure 5 and Figure 9 The second restraint components 940 and 947 include a second locking block 947. The second locking block 947 may be a cuboid-shaped block. One end and the other end of the second locking block 947 may be received in a second front mating groove 941a and a second rear mating groove 943a. For example, the front end of the second locking block 947 may be received in the second front mating groove 941a and the rear end in the second rear mating groove 943a, thereby enabling it to engage with the second retainer 940. The second locking block 947 may close the open left side portion of the second cutout 940a.

[0284] The second cutout portion 940a can be a square hole according to the mating of the second locking block 947 for the second cage 940. For example, the mutually mating second cage 940 and second locking block 947 can have a square ring shape with a square hole formed in the center. For example, the mutually mating second cage 940 and second locking block 947 can be formed in a 'ロ' shape when viewed from above.

[0285] The second locking block 947 can constrain the second connecting portion 823 of the second massage member 820 inserted into the second cutout portion 940a within the second cutout portion 940a. When the second cage 940 and the second locking block 947 are mated, the second connecting portion 823 of the second massage member 820 inserted into the second cutout portion 940a is surrounded and constrained by the second cage 940 and the second locking block 947, and thus is supported in a vertical state within the second cutout portion 940a, and can therefore move in the vertical direction and cannot disengage in the horizontal direction within the second cutout portion 940a.

[0286] Refer to Figure 5 and Figure 9 The posture holding unit 900 includes third constraining members 950, 957. The third constraining members 950, 957 can be provided to constrain the third massage member 830 into a certain posture. The third constraining members 950, 957 can be accommodated on the right side of the first guiding member 910 and move in a left - right sliding manner. The third constraining members 950, 957 can be arranged side by side on the right side of the first constraining members 930, 937.

[0287] The third constraining members 950, 957 include a third cage 950. The third cage 950 can be located between the first guiding rod 911 and the second guiding rod 913. The third cage 950 can be accommodated in the first guiding groove 911a of the first guiding rod 911 and the second guiding groove 913a of the second guiding rod 913 in a state where one side with the third massage member 830 embedded therein. The third cage 950 can be arranged on the right side of the first cage 930 accommodated in the first guiding groove 911a and the second guiding groove 913a. The third cage 950 can move by sliding in the left - right direction in a state where it is placed on the inner lower surfaces of the first guiding groove 911a and the second guiding groove 913a.

[0288] The third retainer 950 has a third cut 950a formed in its central portion, into which the third connecting portion 833 of the third massage component 830 is inserted. The third cut 950a can be formed to extend vertically through the third retainer 950 while having an open right side. The third retainer 950 can be formed to be bent into a "U" shape when viewed from above. The third connecting portion 833 of the third massage component 830 can be inserted into the third cut 950a through the open right side of the third cut 950a, thereby embedding itself into the third retainer 950.

[0289] The third retainer 950 includes: a third front extension 951 extending elongated in the left-right direction; a third rear extension 953 extending elongated in the left-right direction and disposed on the rear side of the third front extension 951; and a third vertical extension 955 perpendicularly connected to the third front extension 951 and the third rear extension 953. The third front extension 951 and the third rear extension 953 may be formed parallel to each other with the same length. The third front extension 951 and the third rear extension 953 may be spaced apart in the front-rear direction. The third front extension 951 may be accommodated in a first guide groove 911a, and the third rear extension 953 may be accommodated in a second guide groove 913a. The front end of the third vertical extension 955 may be directly connected to the left end of the third front extension 951, and the rear end of the third vertical extension 955 may be directly connected to the left end of the third rear extension 953.

[0290] The third front extension 951 may have a third front mating groove 951a recessed upwards formed on the lower surface of its left end. The third rear extension 953 may have a third rear mating groove 953a recessed upwards formed on the lower surface of its left end. The lower and rear portions of the third front mating groove 951a may be open. The lower and front portions of the third rear mating groove 953a may be open.

[0291] Reference Figure 5 and Figure 9 The third constraint components 950 and 957 include a third locking block 957. The third locking block 957 may be a cuboid-shaped block. One end and the other end of the third locking block 957 may be received in a third front mating groove 951a and a third rear mating groove 953a. For example, the front end of the third locking block 957 may be received in the third front mating groove 951a and the rear end in the third rear mating groove 953a, thereby enabling it to engage with the third retainer 950. The third locking block 957 may close the open right side portion of the third cutout 950a.

[0292] The third incision part 950a can be a square hole according to the fit of the third locking block 957 for the third cage 950. For example, the mutually cooperating third cage 950 and third locking block 957 can have a square ring shape with a square hole formed in the center. For example, the mutually cooperating third cage 950 and third locking block 957 can be formed in a 'ロ' shape when viewed from above.

[0293] The third locking block 957 can constrain the third connecting part 833 of the third massage member 830 inserted into the third incision part 950a within the third incision part 950a. When the third cage 950 and the third locking block 957 are in cooperation, the third connecting part 833 of the third massage member 830 inserted into the third incision part 950a is surrounded and constrained by the third cage 950 and the third locking block 957, and thus is supported in a vertical state within the third incision part 950a, and can move in the vertical direction and cannot disengage in the horizontal direction within the third incision part 950a.

[0294] Refer to Figure 5 and Figure 9 As shown in FIGS. and, the attitude holding unit 900 includes fourth restraint members 960, 967. The fourth restraint members 960, 967 can be provided to restrain the fourth massage member 840 in a certain attitude. The fourth restraint members 960, 967 can be accommodated on the right side of the second guide member 920 and move in a left-right sliding manner. The fourth restraint members 960, 967 can be arranged side by side on the right side of the second restraint members 940, 947.

[0295] The fourth restraint members 960, 967 include a fourth cage 960. The fourth cage 960 can be located between the third guide rod 921 and the fourth guide rod 923. The fourth cage 960 can be accommodated in the third guide groove 921a of the third guide rod 921 and the fourth guide groove 923a of the fourth guide rod 923 in a state where the side on which the fourth massage member 840 is embedded is inside. The fourth cage 960 can be arranged on the right side of the second cage 940 accommodated in the third guide groove 921a and the fourth guide groove 923a. The fourth cage 960 can move by sliding in the left-right direction in a state where it is placed on the inner lower surface of the third guide groove 921a and the inner lower surface of the fourth guide groove 923a.

[0296] The fourth retainer 960 has a fourth cutout 960a formed in its central portion, into which the fourth connecting portion 843 of the fourth massage member 840 is inserted. The fourth cutout 960a can be formed to extend vertically through the fourth retainer 960 while having an open right side. The fourth retainer 960 can be formed to be folded into a "ㄈ" shape when viewed from above. The fourth connecting portion 843 of the fourth massage member 840 can be inserted into the fourth cutout 960a through the open right side of the fourth cutout 960a, thereby being inserted into the fourth retainer 960.

[0297] The fourth retainer 960 includes: a fourth front extension 961 extending elongated in the left-right direction; a fourth rear extension 963 extending elongated in the left-right direction and disposed on the rear side of the fourth front extension 961; and a fourth vertical extension 965 perpendicularly connected to the fourth front extension 961 and the fourth rear extension 963. The fourth front extension 961 and the fourth rear extension 963 may be formed parallel to each other with the same length. The fourth front extension 961 and the fourth rear extension 963 may be spaced apart in the front-rear direction. The fourth front extension 961 may be accommodated in a third guide groove 921a, and the fourth rear extension 963 may be accommodated in a fourth guide groove 923a. The front end of the fourth vertical extension 965 may be directly connected to the left end of the fourth front extension 961, and the rear end of the fourth vertical extension 965 may be directly connected to the left end of the fourth rear extension 963.

[0298] The fourth front extension 961 may have a fourth front mating groove 961a recessed upwards formed on the lower surface of its left end. The fourth rear extension 963 may have a fourth rear mating groove 963a recessed upwards formed on the lower surface of its left end. The lower and rear portions of the fourth front mating groove 961a may be open. The lower and front portions of the fourth rear mating groove 963a may be open.

[0299] Reference Figure 5 and Figure 9 The fourth constraint components 960 and 967 include a fourth locking block 967. The fourth locking block 967 may be a cuboid-shaped block. One end and the other end of the fourth locking block 967 may be received in a fourth front mating groove 961a and a fourth rear mating groove 963a. For example, the front end of the fourth locking block 967 may be received in the fourth front mating groove 961a and the rear end in the fourth rear mating groove 963a, thereby enabling it to engage with the fourth retainer 960. The fourth locking block 967 may close the open right side portion of the fourth cutout 960a.

[0300] The fourth cutout portion 960a can be a square hole according to the mating of the fourth locking block 967 for the fourth cage 960. For example, the mutually mating fourth cage 960 and fourth locking block 967 can have a square ring shape with a square hole formed in the center. For example, the mutually mating fourth cage 960 and fourth locking block 967 can be formed in a 'ロ' shape when viewed from above.

[0301] The fourth locking block 967 can constrain the fourth connecting portion 843 of the fourth massage member 840 inserted into the fourth cutout portion 960a within the fourth cutout portion 960a. When the fourth cage 960 and the fourth locking block 967 are mated, the fourth connecting portion 843 of the fourth massage member 840 inserted into the fourth cutout portion 960a is surrounded and constrained by the fourth cage 960 and the fourth locking block 967, and thus is supported in a vertical state within the fourth cutout portion 960a, and can therefore move in the vertical direction and cannot disengage in the horizontal direction within the fourth cutout portion 960a.

[0302] The first cage 930, the second cage 940, the third cage 950, and the fourth cage 960 can be substantially the same. The first locking block 937, the second locking block 947, the third locking block 957, and the fourth locking block 967 can be substantially the same. The first cage 930 and the third cage 950 can be arranged in a left-right symmetric configuration. The second cage 940 and the fourth cage 960 can be arranged in a left-right symmetric configuration.

[0303] Refer to Figure 5 and Figure 9 , the attitude holding unit 900 includes a first cover plate 970 and a second cover plate 980. The first cover plate 970 and the second cover plate 980 can be formed in a square plate shape that is long in the left-right direction.

[0304] The first cover plate 970 can be fixed to the upper surfaces of the first guide rod 911 and the second guide rod 913, and the second cover plate 980 can be fixed to the upper surfaces of the third guide rod 921 and the fourth guide rod 923. For example, the front portion of the first cover plate 970 can be placed on the upper surface of the first guide rod 911 and fixed to the first guide rod 911 by screw connection, and the rear portion of the first cover plate 970 can be placed on the upper surface of the second guide rod 913 and fixed to the second guide rod 913 by screw connection. For example, the front portion of the second cover plate 980 can be placed on the upper surface of the third guide rod 921 and fixed to the first guide rod 911 by screw connection, and the rear portion of the second cover plate 980 can be placed on the upper surface of the fourth guide rod 923 and fixed to the second guide rod 913 by screw connection.

[0305] The front portion of the first cover plate 970 can cover the upper portion of the first guide groove 911a, and the rear portion of the first cover plate 970 can cover the upper portion of the second guide groove 913a. The front portion of the second cover plate 980 can cover the upper portion of the third guide groove 921a, and the rear portion of the second cover plate 980 can cover the upper portion of the fourth guide groove 923a.

[0306] The first cover plate 970 can restrain the first retainer 930 and the third retainer 950 to prevent them from disengaging upward within the first guide groove 911a and the second guide groove 913a. The second cover plate 980 can restrain the second retainer 940 and the fourth retainer 960 to prevent them from disengaging upward within the third guide groove 921a and the fourth guide groove 923a.

[0307] The first cover plate 970 includes a first guide slit 971, and the second cover plate 980 includes a second guide slit 981. The first guide slit 971 may be formed in the central portion of the first cover plate 970 in a vertically penetrating manner, and the second guide slit 981 may be formed in the central portion of the second cover plate 980 in a vertically penetrating manner. The first guide slit 971 and the second guide slit 981 may be formed as square holes extending elongated in the horizontal direction. The first guide slit 971 may communicate with the space between the first guide rod 911 and the second guide rod 913, and the second guide slit 981 may communicate with the space between the third guide rod 921 and the fourth guide rod 923.

[0308] The first connecting part 813 and the third connecting part 833 can pass through the first guide slit 971 and move up and down in the left and right direction within the first guide slit 971 as the first eccentric part 640 and the third eccentric part 740 rotate eccentrically. The second connecting part 823 and the fourth connecting part 843 can pass through the second guide slit 981 and move up and down in the left and right direction within the second guide slit 981 as the second eccentric part 650 and the fourth eccentric part 750 rotate eccentrically.

[0309] The operation of the eccentric rotating components 600 and 700 and the massage components 810, 820, 830, and 840 based on the operation of the drive unit 500 will be described below with reference to the accompanying drawings.

[0310] Figure 10 (a) and (b) are top and right views showing the configuration (initial state) of the first and second eccentric rotating components and the first to fourth massage components of the massage module before the drive unit of an embodiment of the present invention is activated. Figure 11 (a) is an illustrative representation of the relationship between the two. Figure 10 The front view of the first eccentric part connected to the first shaft and the third eccentric part connected to the second shaft. Figure 11 (b) is an illustrative representation of the relationship between the two. Figure 10 The front view of the second eccentric part connected to the first shaft and the fourth eccentric part connected to the second shaft.

[0311] Reference Figure 10 and Figure 11 In their initial state, the first to fourth eccentric portions 640, 650, 740, and 750 can be arranged in a 2x2 square configuration at the same height. More specifically, the rising and falling points of the first eccentric portion 640 and the third eccentric portion 740 can face the 3 o'clock and 9 o'clock directions respectively, and can be aligned side-by-side. The rising and falling points of the second eccentric portion 650 and the fourth eccentric portion 750 can also face the 3 o'clock and 9 o'clock directions respectively, and can be aligned side-by-side. The first eccentric portion 640 and the second eccentric portion 650 can be aligned front-to-back with the same phase relative to the first axis portion 610, and the third eccentric portion 740 and the fourth eccentric portion 750 can be aligned front-to-back with the same phase relative to the second axis portion 710.

[0312] At this time, the first adjusting pin 615 can be positioned on the second locking surface 659 with the orientation towards the 3 o'clock position, and the second adjusting pin 715 can be positioned on the third locking surface 747 with the orientation towards the 9 o'clock position.

[0313] In their initial state, the first to fourth massage components 810, 820, 830, and 840 can be arranged in a square pattern of 2 rows and 2 columns according to the arrangement of the first to fourth eccentric portions 640, 650, 740, and 750, and can be positioned at the same height. At this time, the first to fourth massage components 810, 820, 830, and 840 can be held in a certain posture by the posture holding unit 900 without tilting, thereby allowing the first to fourth rollers 817, 827, 837, and 847 to remain horizontal at the same height.

[0314] Figure 12 (a) and (b) are shown Figure 10 Top view and right view of (a) and (b) showing the first axis rotated 90 degrees counterclockwise and the second axis rotated 90 degrees clockwise. Figure 13 (a) is an illustrative representation of the relationship between the two. Figure 12 The front view of the first eccentric part connected to the first shaft and the third eccentric part connected to the second shaft. Figure 13 (b) is an illustrative representation of the relationship between the two. Figure 12 The front view of the second eccentric part connected to the first shaft and the fourth eccentric part connected to the second shaft.

[0315] Reference Figure 12 and Figure 13In the initial state, by the operation of the drive unit 500 in one direction, the first shaft 610 can rotate 90 degrees counterclockwise, and at the same time, the second shaft 710 can rotate 90 degrees clockwise.

[0316] In this configuration, the first eccentric portion 640, together with the first shaft portion 610, has rotated 90 degrees counterclockwise from its initial state, so that the lifting point faces the 12 o'clock position. Similarly, the fourth eccentric portion 750, together with the second shaft portion 710, has rotated 90 degrees clockwise from its initial state, so that the lifting point also faces the 12 o'clock position. Thus, the first massage component 810 and the fourth massage component 840, having maintained a certain posture by the posture holding unit 900, rise to the same height up to the top dead center.

[0317] At this time, regarding the second eccentric portion 650, the first adjusting pin 615, which is mounted on the second locking surface 659, rotates 90 degrees counterclockwise without any interference as the first shaft portion 610 rotates, thus facing the 12 o'clock direction, and therefore does not receive any rotational force transmitted from the first shaft portion 610. Therefore, the second eccentric portion 650, together with the second massage component 820, remains in the same state as in the initial state.

[0318] Furthermore, regarding the third eccentric portion 740, the second adjusting pin 715, which is mounted on the third locking surface 747, rotates 90 degrees clockwise without any interference as the second shaft portion 710 rotates, thus facing the 12 o'clock direction and receiving no rotational force transmitted from the second shaft portion 710. Therefore, the third eccentric portion 740, together with the third massage component 830, remains in the same state as in the initial state.

[0319] At this time, the phase difference between the first eccentric part 640 and the second eccentric part 650 can be 90 degrees. The phase difference between the third eccentric part 740 and the fourth eccentric part 750 can also be 90 degrees.

[0320] Figure 14 (a) and (b) are shown in Figure 12 Top view and right view of (a) and (b) showing the state where the first axis is rotated 90 degrees counterclockwise and the second axis is rotated 90 degrees clockwise. Figure 15 (a) is an illustrative representation of the relationship between the two. Figure 14 The front view of the first eccentric part connected to the first shaft and the third eccentric part connected to the second shaft. Figure 15 (b) is an illustrative representation of the relationship between the two. Figure 14 The front view of the second eccentric part connected to the first shaft and the fourth eccentric part connected to the second shaft.

[0321] Reference Figure 14 and Figure 15 In such Figure 12 and Figure 13 In the state shown, the drive unit 500 can further rotate in one direction to rotate the first shaft 610 90 degrees counterclockwise (180 degrees counterclockwise from the initial state) and the second shaft 710 90 degrees clockwise (180 degrees clockwise from the initial state).

[0322] In this configuration, the first eccentric portion 640, together with the first shaft portion 610, has rotated 180 degrees counterclockwise from its initial state, so that the lifting point faces the 9 o'clock position. Similarly, the fourth eccentric portion 750, together with the second shaft portion 710, has rotated 180 degrees clockwise from its initial state, so that the lifting point faces the 3 o'clock position. Thus, the first massage component 810 and the fourth massage component 840, held in a specific posture by the posture holding unit 900, are positioned between the upper and lower dead points, achieving the same height as in their initial state.

[0323] At this time, the second eccentric portion 650 is positioned on the first locking surface 657 with the first adjusting pin 615, which rotates 90 degrees counterclockwise without interference as the first shaft portion 610 rotates, so that it is facing the 9 o'clock position. Therefore, it does not receive any rotational force transmitted from the first shaft portion 610. Thus, the second eccentric portion 650, together with the second massage member 820, remains in the same state as in the initial state.

[0324] Furthermore, regarding the third eccentric portion 740, the second adjusting pin 715, facing the 12 o'clock position, rotates 90 degrees clockwise without interference as the second shaft portion 710 rotates, and is positioned towards the 3 o'clock position on the fourth locking surface 749, thus receiving no rotational force transmitted from the second shaft portion 710. Therefore, the third eccentric portion 740, together with the third massage component 830, remains in the same state as in its initial state.

[0325] At this time, the phase difference between the first eccentric part 640 and the second eccentric part 650 can be 180 degrees. The phase difference between the third eccentric part 740 and the fourth eccentric part 750 can also be 180 degrees.

[0326] From becoming like Figure 14 and Figure 15 After the state shown, when the first shaft 610 rotates counterclockwise, the first eccentric part 640 and the second eccentric part 650 can simultaneously rotate eccentrically while maintaining a phase difference of 180 degrees. When the second shaft 710 rotates clockwise, the third eccentric part 740 and the fourth eccentric part 750 can simultaneously rotate eccentrically while maintaining a phase difference of 180 degrees.

[0327] Therefore, the first massage member 810 and the fourth massage member 840, arranged diagonally from the left front to the right rear, can alternately rise and fall in an "X" shape with the second massage member 820 and the third massage member 830, arranged diagonally from the left rear to the right front. For example, when the first massage member 810 and the fourth massage member 840 have descended to their lower stop, the second massage member 820 and the third massage member 830 can rise to their upper stop. This state is shown in... Figure 16 and Figure 17 The following is an explanation of this.

[0328] Figure 16 (a) and (b) are shown Figure 14 Top view and right view of (a) and (b) showing the state where the first axis is rotated 90 degrees counterclockwise and the second axis is rotated 90 degrees clockwise. Figure 17 (a) is an illustrative representation of the relationship between the two. Figure 16 The front view of the first eccentric part connected to the first shaft and the third eccentric part connected to the second shaft. Figure 17 (b) is an illustrative representation of the relationship between the two. Figure 16 The front view of the second eccentric part connected to the first shaft and the fourth eccentric part connected to the second shaft.

[0329] Reference Figure 16 and Figure 17 In such Figure 14 and Figure 15 In the state shown, the drive unit 500 can further rotate in one direction to rotate the first shaft 610 90 degrees counterclockwise (270 degrees counterclockwise from the initial state) and the second shaft 710 90 degrees clockwise (270 degrees clockwise from the initial state).

[0330] In this configuration, the first eccentric portion 640, together with the first shaft portion 610, has rotated 270 degrees counterclockwise from its initial state, so that the rising and falling points of the first eccentric portion 640 are oriented towards the 6 o'clock position. Similarly, the fourth eccentric portion 750, together with the second shaft portion 710, has rotated 270 degrees clockwise from its initial state, so that the rising and falling points of the fourth eccentric portion 750 are oriented towards the 6 o'clock position. Thus, the first massage component 810 and the fourth massage component 840 are lowered to their lower stop point while maintaining a certain posture by the posture holding unit 900.

[0331] At this time, regarding the second eccentric portion 650, the first adjusting pin 615, which is placed on the first locking surface 657, pushes the first locking surface 657 to rotate 90 degrees counterclockwise as the first shaft portion 610 rotates, so that the lifting point faces the 12 o'clock direction. As a result, the second massage component 820 rises to the upper stop point in a state where it has been held in a certain posture by the posture holding unit 900.

[0332] Furthermore, regarding the third eccentric portion 740, the second adjusting pin 715, which is mounted on the fourth locking surface 749, pushes the fourth locking surface 749 to rotate 90 degrees clockwise as the second shaft portion 710 rotates, thereby aligning the lifting point towards the 12 o'clock position. As a result, the third massage component 830 rises to its upper stop point while maintaining a certain posture by the posture holding unit 900.

[0333] Thus, the first massage member 810 and the fourth massage member 840, arranged diagonally from the left front to the right rear, are in a state of descending to the lower stop point, while the second massage member 820 and the third massage member 830, arranged diagonally from the left rear to the right front, are in a state of rising to the upper stop point. When the drive unit 500 continues to rotate in one direction in this state, the first massage member 810 and the fourth massage member 840, along with the second massage member 820 and the third massage member 830, can alternately pass the upper stop point and the lower stop point and rise and fall with a phase difference of 180 degrees.

[0334] If, in such Figure 16 and Figure 17 When the drive unit 500 rotates in the opposite direction as shown, the first shaft 610 can rotate clockwise and the second shaft 710 can rotate counterclockwise.

[0335] In this case, the first eccentric part 640 rotates eccentrically in the clockwise direction. The eccentric rotation of the second eccentric part 650 is delayed until the first eccentric part 640 rotates 180 degrees in the clockwise direction, so that it can rotate eccentrically in the clockwise direction with the same phase as the first eccentric part 640.

[0336] Furthermore, the fourth eccentric part 750 rotates eccentrically in the counterclockwise direction. The eccentric rotation of the third eccentric part 740 is delayed until the fourth eccentric part 750 rotates 180 degrees in the counterclockwise direction. It can then rotate eccentrically in the counterclockwise direction with the same phase as the fourth eccentric part 750.

[0337] Thus, the first to fourth massage components 810, 820, 830, and 840 can all rise and fall at the same height simultaneously. When the operation of the drive unit 500 is stopped, they can return to their initial state and align together with the first to fourth eccentric portions 640, 650, 740, and 750.

[0338] The following describes a massage module for a massage machine according to another embodiment of the present invention.

[0339] Figure 18 This is a perspective view showing a massage module 1000 (hereinafter referred to as a massage module) for a massage machine according to another embodiment of the present invention. Figure 19 yes Figure 18 An exploded 3D diagram.

[0340] Figure 18 The massage module 1000 shown can be mounted on a massage machine. The massage module 1000 includes massage components 1810, 1820, 1830, and 1840 for massaging the user's spine. For example, massage components 1810, 1820, 1830, and 1840 may include first to fourth massage components 1810, 1820, 1830, and 1840, which will be described later. The massage machine equipped with the massage module 1000 can be a thermotherapy device. The massage module 1000 can be built into the main body (not shown) of the massage machine, which is shaped like a bed. The user's upper body can be placed on the main body (not shown). A sub-body (not shown) on which the user's lower body rests can be connected to the main body (not shown) in a folding or sliding manner. The massage module 1000 can be configured to slide and engage with a space formed inside the main body (not shown) and move along the length of the main body (not shown). The length direction of the main body (not shown) can be the length direction of the user's spine lying on the main body (not shown). For example, it can be based on... Figure 18 The direction shown is called the front-to-back direction, referring to the length direction of the main body (not shown). The massage module 1000 can be built into the main body (not shown) and perform massage on the user's entire spine by reciprocating linearly in the front-to-back direction. For example, the massage module 1000 can massage the lumbar, thoracic, or cervical vertebrae of a user lying on the main body (not shown) while moving in the front-to-back direction. The massage module 1000 can provide physical massage to the user and can also utilize heat therapy in parallel.

[0341] Reference Figure 18The massage module 1000 includes a base 1010. The base 1010 can be connected to the interior of the massager body (not shown) in a manner that allows it to be conveyed in a back-to-back direction. The base 1010 can support massage components 1810, 1820, 1830, and 1840. The base 1010 can perform linear reciprocating motion inside the body (not shown) via a conveying unit (not shown) disposed on one side of the base 1010.

[0342] Reference Figure 18 and Figure 19 The base 1010 includes a base plate 1100. The base plate 1100 may be the lowest structure forming the base 1010. The base plate 1100 may be configured to reciprocate linearly in the front-back direction within the interior space of the main body (not shown). For example, the base plate 1100 may be connected to the main body (not shown) in a manner that allows it to slide inside the main body (not shown).

[0343] The base plate 1100 includes a flat plate portion 1110. The flat plate portion 1110 may be a plate-shaped component used to set various structures of the massage module 1000. The flat plate portion 1110 may be a flat, square plate that is wide in the horizontal direction.

[0344] The base plate 1100 may include a fixing part 1120. The fixing part 1120 is connected to the lifting drive part 1230 of the massage plate 1300. The fixing part 1120 may be integrally formed on the front center portion of the base plate 1100. The fixing part 1120 may be formed to extend upward from the upper surface of the base plate 1100 and bend backward.

[0345] Reference Figure 18 and Figure 19 The base 1010 includes a lifting unit 1200. The lifting unit 1200 can be disposed on the upper part of the base plate 1100. The lifting unit 1200 is connected to a massage plate 1300 disposed on the upper side, enabling the massage plate 1300 to descend toward or rise from the base plate 1100. The lifting of the massage plate 1300 based on the lifting unit 1200 will be described in more detail later.

[0346] Reference Figure 18 and Figure 19 The lifting unit 1200 includes track sections 1201 and 1202. The track sections 1201 and 1202 can be formed to extend in the front-rear direction in order to guide the moving wheels 1243a provided on the moving body 1240. The track sections 1201 and 1202 can be connected to the left and right sides of the upper surface of the base plate 1100, respectively.

[0347] The track sections 1201 and 1202 include a left track section 1201, which is arranged to extend in the front-rear direction and is fixed to the left end of the upper surface of the base plate 1100. The left track section 1201 can be disposed between the base plate 1100 and the left fixing plate 1210 described below. A first track groove 1201a, which extends in the front-rear direction and is open at the top, can be formed on the right side of the left track section 1201.

[0348] The track sections 1201 and 1202 include a right track section 1202, which is positioned and fixed to the right end of the upper surface of the base plate 1100, arranged in a longitudinal direction. The right track section 1202 can be disposed between the base plate 1100 and the right fixing plate 1220 described below. A second track groove 1202a, which is formed in a longitudinal direction and open at the top, can be formed on the left side of the right track section 1202. The left track section 1201 and the right track section 1202 can have a symmetrical shape and arrangement.

[0349] Reference Figure 18 and Figure 19 The lifting unit 1200 includes fixing plates 1210 and 1220. Fixing plates 1210 and 1220 can be components used to guide the lifting body 1270 described below in its vertical movement. Fixing plates 1210 and 1220 can be vertically fixed to the left and right sides of the base plate 1100, respectively. Fixing plates 1210 and 1220 can be connected to the base plate 1100 and the track portions 1201 and 1202, which are connected to the upper surface of the base plate 1100.

[0350] Fixing plates 1210 and 1220 include a left fixing plate 1210. The left fixing plate 1210 can be connected to the upper left side of the base plate 1100. The left fixing plate 1210 can be fixed in an upright position relative to the base plate 1100. For example, the left fixing plate 1210 can be vertically arranged so as to extend upward from the upper surface of the left end of the base plate 1100.

[0351] The left fixing plate 1210 includes a first plate portion 1211 in the shape of a square plate formed to form a left side wall, which is wide in the vertical direction, and a first flange portion 1212 bent from the lower end of the first plate portion 1211 toward the left. The left fixing plate 1210 can be connected to the base plate 1100 through the left track portion 1201. For example, the left fixing plate 1210 is connected to the base plate 1100, the left track portion 1201 and the first flange portion 1212 are arranged on the upper surface of the left side of the left track portion 1201 which is connected to the upper surface of the left end of the base plate 1100, thereby fixing it to the base plate 1100.

[0352] Fixing plates 1210 and 1220 include a right-side fixing plate 1220. The right-side fixing plate 1220 can be connected to the upper right side of the base plate 1100. The right-side fixing plate 1220 can be fixed in an upright position relative to the base plate 1100. For example, the right-side fixing plate 1220 can be vertically configured to extend upwards from the upper surface of the right end of the base plate 1100. The right-side fixing plate 1220 can have a shape and configuration symmetrical to the left-side fixing plate 1210.

[0353] The right-side fixing plate 1220 includes a second plate portion 1221 formed in a square plate shape to form a right-side wall, which is wide in the vertical direction, and a second flange portion 1222 bent towards the right from the lower end of the second plate portion 1221. The right-side fixing plate 1220 can be connected to the base plate 1100 via the right-side track portion 1202. For example, the right-side fixing plate 1220 is connected to the base plate 1100, the right-side track portion 1202 and the second flange portion 1222 are arranged with the second flange portion 1222 on the upper surface of the right side portion of the right track portion 1202 connected to the upper surface of the right end of the base plate 1100, thereby fixing it to the base plate 1100. The right-side fixing plate 1220 can be formed in a shape that is symmetrical to the left-side fixing plate 1210.

[0354] The fixing plates 1210 and 1220 may have lifting holes 1211a and 1221a. The lifting holes 1211a and 1221a may extend through the left and right sides. The lifting holes 1211a and 1221a may extend vertically. The lifting holes 1211a and 1221a include a first lifting hole 1211a provided on the left fixing plate 1210 and a second lifting hole 1221a provided on the right fixing plate 1220. The first lifting hole 1211a may be formed vertically in the first plate portion 1211, and the second lifting hole 1221a may be formed vertically in the second plate portion 1221. The first lifting hole 1211a and the second lifting hole 1221a may be formed in the same elongated hole shape and may be arranged opposite each other. At least one first lifting hole 1211a and one second lifting hole 1221a may be provided respectively. For example, a first lifting hole 1211a can be formed in the front and rear parts of the first plate portion 1211, that is, two first lifting holes 1211a can be formed in total, and a second lifting hole 1221a can be formed in the front and rear parts of the second plate portion 1221, that is, two second lifting holes 1221a can be formed in total.

[0355] Reference Figure 18 and Figure 19The lifting unit 1200 includes a drive unit 1230. The drive unit 1230 can be provided on the upper surface of the flat plate portion 1110 of the base plate 1100 to enable the moving body 1240 to perform linear reciprocating motion. For example, the drive unit 1230 can have a protrusion 1232 protruding forward at its front end, and the protrusion 1232 and the fixing portion 1120 of the base plate 1100 are connected by a first connecting pin 1233 to be disposed on the upper surface of the flat plate portion 1110, thus allowing it to be mounted on the base plate 1100. The drive unit 1230 can be configured such that its vertical height is shorter than its horizontal and vertical lengths. That is, the drive unit 1230 can be configured to be flat when viewed as a whole. Therefore, when the massage plate 1300 descends, the gap between the drive unit 1230 and the massage plate 1300 is minimized to the maximum extent, thus allowing the massage module 1000 to be compactly constructed overall.

[0356] The drive unit 1230 includes a rod 1231 that extends from or is drawn into the housing that forms the outer shape of the drive unit 1230. For example, the drive unit 1230 may be a linear actuator including the rod 1231, which is capable of linear reciprocating motion in the front-rear direction. The rod 1231 pushes or pulls the moving body 1240 through the operation of the drive unit 1230, thereby enabling the moving body 1240 to perform linear reciprocating motion.

[0357] Reference Figure 18 and Figure 19 The lifting unit 1200 includes a movable body 1240. The movable body 1240 can be disposed on the upper part of the base plate 1100 and between the left fixed plate 1210 and the right fixed plate 1220. The movable body 1240 can form a space with an open upper surface and front. The movable body 1240 can accommodate the drive unit 1230 in the internal space, and its rear end can be connected to the rear end of the rod 1231. The movable body 1240 can reciprocate linearly in the front-back direction via the drive unit 1230. For example, when the rod 1231 of the drive unit 1230 retracts (is pushed out of the housing of the drive unit), the movable body 1240 can be pushed by the rod 1231 and moved to the rearward side; when the rod 1231 of the drive unit 1230 advances (is pulled into the housing side of the drive unit), the movable body 1240 can be pulled by the rod 1231 and moved to the forward side.

[0358] The movable body 1240 may have wheels on both the left and right sides. For example, the wheels may include a left movable wheel (not shown) rotatably disposed on the left outer surface of the movable body 1240 and a right movable wheel 1243a disposed on the right outer surface of the movable body 1240. The left movable wheel (not shown) can roll in a state where it is placed in and supported in the first track groove 1201a of the left track portion 1201, and the right movable wheel 1243a can roll in a state where it is placed in and supported in the second track groove 1202a of the right track portion 1202. The bottom of the movable body 1240 may be positioned slightly upward from the upper surface of the base plate 1100 to avoid friction with the base plate 1100 during movement. When the moving body 1240 performs linear reciprocating motion via the rod 1231, the left moving wheel (not shown) can roll along the first track groove 1201a in the front-back direction, and the right moving wheel 1243a can roll along the second track groove 1202a in the front-back direction, thereby enabling the linear reciprocating motion of the moving body 1240 to proceed smoothly.

[0359] The movable body 1240 includes a lower plate 1241. The lower plate 1241 forms the bottom of the movable body 1240. The lower plate 1241 can be formed into a generally horizontal square plate shape. A cutout 1241a is formed in the lower plate 1241 from the front end to the rear. The cutout 1241a can be formed into a stepped shape facing the rear. The lower plate 1241 can be configured to face the flat plate portion 1110 of the base plate 1100. When the movable wheels of the movable body 1240 are supported by the track portions 1201 and 1202, the lower plate 1241 can be separated from the flat plate portion 1110 of the base plate 1100 to avoid friction with the base plate 1100.

[0360] The movable body 1240 includes a left side plate 1242. The left side plate 1242 can be integrally formed with the lower plate 1241. The left side plate 1242 can be formed to extend upward from the left end of the lower plate 1241. The left side plate 1242 can be formed perpendicular to the lower plate 1241. The left side plate 1242 can be a vertically elongated square plate in the front-rear direction. When the movable body 1240's moving wheels are supported by the track portions 1201 and 1202, the left side plate 1242 can be spaced apart from the right end of the left track portion 1201.

[0361] The previously described left-side movable wheel (not shown) can be rotatably installed on the left side of the left side plate 1242, which is the outer side surface. At least one or more left-side movable wheels (not shown) can be installed on the left side of the left side plate 1242. For example, one left-side movable wheel (not shown) can be installed at the front and one at the rear of the left side plate 1242, that is, two left-side movable wheels (not shown) can be installed in a state where they are spaced apart from each other.

[0362] The movable body 1240 includes a right side plate 1243. The right side plate 1243 can be integrally formed with the lower plate 1241. The right side plate 1243 can be formed to extend upwards from the right side end of the lower plate 1241. The right side plate 1243 can be formed perpendicular to the lower plate 1241. The right side plate 1243 can be a vertically elongated square plate in the front-rear direction. When the movable body 1240's moving wheels are supported by the track portions 1201 and 1202, the right side plate 1243 can be spaced apart from the left side end of the right track portion 1202. The right side plate 1243 can be opposite to the left side plate 1242.

[0363] The previously described right-side moving wheel 1243a can be rotatably mounted on the right side of the right-side plate 1243, which is the outer side. At least one right-side moving wheel 1243a can be provided on the right side of the right-side plate 1243. For example, one right-side moving wheel 1243a can be provided at the front and one at the rear of the right-side plate 1243, that is, two right-side moving wheels 1243a can be provided separately from each other.

[0364] The left movable wheel (not shown) can be supported by the left track section 1201, and the right movable wheel 1243a can be supported by the right track section 1202. Therefore, the movable body 1240 can be supported on the left track section 1201 and the right track section 1202.

[0365] The movable body 1240 includes a rear side plate 1244. The rear side plate 1244 can be integrally formed with the lower plate 1241, the left side plate 1242, and the right side plate 1243. The rear side plate 1244 can be formed to extend upward from the rear end of the lower plate 1241. The rear side plate 1244 can connect the left side plate 1242 and the right side plate 1243. The rear side plate 1244 can be formed perpendicular to both the lower plate 1241 and the left side plate 1242 and the right side plate 1243. The rear side plate 1244 can be a vertically elongated rectangular plate in the left-right direction. The rear side plate 1244, together with the lower plate 1241, the left side plate 1242, and the right side plate 1243, can form a cuboid shape with an open upper surface and front.

[0366] A connector 1247 may be formed on the rear side plate 1244. The connector 1247 protrudes forward from the upper center of the rear side plate 1244. The connector 1247 may be opposite to the lower plate 1241. The connector 1247 and the lower plate 1241 may be spaced apart from each other. The rear end of the rod 1231 may be accommodated between the rear portion of the connector 1247 and the lower plate 1241. The rear end of the rod 1231 may be connected and constrained to the rear portion of the connector 1247 and the lower plate 1241 by a second connecting pin 1248. Therefore, the linear reciprocating motion of the rod 1231 is transmitted to the moving body 1240, enabling the moving body 1240 to reciprocate linearly in the front-rear direction together.

[0367] The movable body 1240 includes a left flange 1245. The left flange 1245 can be integrally formed with the left side plate 1242. The left flange 1245 can extend in a manner that bends from the upper end of the left side plate 1242 toward the left. The left flange 1245 can be a horizontally rectangular plate that is elongated in the front-rear direction. The left flange 1245 can be provided to support the left movable plate 1250 described below.

[0368] A first connecting piece 1245a may be formed on the left flange 1245. The first connecting piece 1245a may be provided for the connection between the movable body 1240 and the left movable plate 1250. The first connecting piece 1245a may be formed on the left front end and the left rear end of the left flange 1245 respectively, in an opposite manner to each other. The first connecting piece 1245a may protrude toward the upper side of the left flange 1245.

[0369] The movable body 1240 includes a right-side flange 1246. The right-side flange 1246 can be integrally formed with the right-side plate 1243. The right-side flange 1246 can extend in a manner that bends from the upper end of the right-side plate 1243 toward the right. The right-side flange 1246 can be a horizontal square plate that is long in the front-rear direction. The right-side flange 1246 can be provided to support the right-side movable plate 1260 described below.

[0370] A second connecting piece 1246a may be formed on the right flange 1246. The second connecting piece 1246a may be provided for the connection between the movable body 1240 and the right movable plate 1260. The second connecting pieces 1246a may be formed on the front right side and the rear right side of the right flange 1246 respectively, in an opposite manner to each other. The second connecting piece 1246a may be formed to protrude toward the upper side of the right flange 1246.

[0371] Reference Figure 18 and Figure 19The lifting unit 1200 includes movable plates 1250 and 1260. The movable plates 1250 and 1260 are vertically fixed to the left and right ends of the movable body 1240, respectively. The movable plates 1250 and 1260 can be configured to correspond to the inner surfaces of the left and right fixed plates 1210 and 1220. The movable plates 1250 and 1260 are connected to the movable body 1240 via flanges 1245 and 1246, respectively, allowing them to reciprocate linearly in the same direction as the movable body 1240.

[0372] The movable plates 1250 and 1260 include a left movable plate 1250. The left movable plate 1250 can be formed into a vertically elongated rectangular plate in the front-rear direction. The left movable plate 1250 is inserted vertically between the first connecting pieces 1245a formed at the front and rear ends of the left flange 1245, respectively, so that it can be placed on the upper surface of the left flange 1245, and can be connected to the left flange 1245 and the first connecting pieces 1245a in this state by a separate connecting member. Therefore, the left movable plate 1250 can move together with the linear reciprocating motion of the movable body 1240.

[0373] The left movable plate 1250 can be configured to be opposite to the left fixed plate 1210. For example, the left movable plate 1250 can be configured to be adjacent to the right side of the left fixed plate 1210, and the left side of the left movable plate 1250 and the right side of the left fixed plate 1210 can be opposite to each other.

[0374] The movable plates 1250 and 1260 include a right movable plate 1260. The right movable plate 1260 can be formed into a vertically elongated rectangular plate in the front-rear direction. The right movable plate 1260 is inserted vertically between the second connecting pieces 1246a formed at the front and rear ends of the right flange 1246, respectively, so that it can be placed on the upper surface of the right flange 1246, and can be connected to the right flange 1246 and the second connecting piece 1246a in this state by a separate connecting member. Therefore, the right movable plate 1260 can move together with the linear reciprocating motion of the movable body 1240.

[0375] The right movable plate 1260 can be configured to face the right fixed plate 1220. For example, the right movable plate 1260 can be configured to be adjacent to the left side of the right fixed plate 1220, and the right side of the right movable plate 1260 and the left side of the right fixed plate 1220 can face each other.

[0376] The left movable plate 1250 and the right movable plate 1260 can have symmetrical shapes and configurations, and can be positioned between the left fixed plate 1210 and the right fixed plate 1220.

[0377] The movable plates 1250 and 1260 have inclined holes 1251 and 1261. The inclined holes 1251 and 1261 can extend through in the left-right direction. The inclined holes 1251 and 1261 can extend in a lengthwise direction. The inclined holes 1251 and 1261 include a first inclined hole 1251 provided in the left movable plate 1250 and a second inclined hole 1261 provided in the right movable plate 1260.

[0378] The first inclined hole 1251 can be inclinedly formed on the left movable plate 1250 in a manner that gradually increases in height from the front side to the rear side, and the second inclined hole 1261 can be inclinedly formed on the right movable plate 1260 in a manner that gradually increases in height from the front side to the rear side. Therefore, the upper and lower inner surfaces of the first inclined hole 1251 and the second inclined hole 1261 can be formed as inclined surfaces. The lower portions of the first inclined hole 1251 and the second inclined hole 1261 can each be formed as horizontal. The first inclined hole 1251 and the second inclined hole 1261 can be formed as the same elongated hole and can be configured to face each other. At least one first inclined hole 1251 and one inclined hole 1261 can be provided respectively. For example, a first inclined hole 1251 can be formed through the front and rear parts of the left movable plate 1250, that is, a total of two first inclined holes 1251 can be formed through the front and rear parts of the right movable plate 1260, that is, a total of two second inclined holes 1261 can be formed through the front and rear parts of the right movable plate 1260.

[0379] The first inclined hole 1251 can communicate with the first lifting hole 1211a, and the second inclined hole 1261 can communicate with the second lifting hole 1221a. The left guide shaft 1272a of the lifting body 1270 can be inserted into the interconnected first inclined hole 1251 and first lifting hole 1211a. The right guide shaft 1273a of the lifting body 1270 can be inserted into the interconnected second inclined hole 1261 and second lifting hole 1221a.

[0380] Reference Figure 18 and Figure 19The lifting unit 1200 includes a lifting body 1270. The lifting body 1270 is connected to the lower part of the massage plate 1300, enabling the massage plate 1300 to rise or fall in the vertical direction. The lifting body 1270 can be horizontally disposed on the upper part of the moving body 1240, and can be disposed between the left moving plate 1250 and the right moving plate 1260. The lifting body 1270 can have cylindrical guide shafts 1272a and 1273a integrally provided at its left and right ends, respectively. For example, the guide shafts 1272a and 1273a include a left guide shaft 1272a disposed at the left end of the lifting body 1270 and a right guide shaft 1273a disposed at the right end of the lifting body 1270. Guide shafts 1272a and 1273a are inserted into corresponding inclined holes 1251 and 1261 and lifting holes 1211a and 1221a, allowing the lifting body 1270 to engage with moving plates 1250 and 1260 and fixed plates 1210 and 1220. The lifting body 1270 can move up or down in conjunction with moving bodies 1240 and moving plates 1250 and 1260, which reciprocate linearly via rod 1231 of drive unit 1230. When moving bodies 1240 and moving plates 1250 and 1260 move rearward under the pushing force of rod 1231, the lifting body 1270 descends. When moving bodies 1240 and moving plates 1250 and 1260 move forward under the pulling force of rod 1231, the lifting body 1270 rises.

[0381] The lifting body 1270 includes a lifting plate 1271. The lifting plate 1271 can be formed into a horizontal square plate shape. The left end of the lifting plate 1271 can be mounted on the left flange of the movable body 1240, and the right end of the lifting plate 1271 can be mounted on the right flange of the movable body 1240.

[0382] The lifting body 1270 includes a left side wall 1272. The left side wall 1272 may be formed in a shape that bends upward from the left end of the lifting plate 1271. The left side wall 1272 may be a long, vertically oriented square plate. The left side wall 1272 may be integrally formed with the lifting plate 1271. The left side wall 1272 may be arranged adjacent to the left movable plate 1250 such that its left side faces the right side of the left movable plate 1250.

[0383] A left guide shaft 1272a may be provided on the left side wall portion 1272. The left guide shaft 1272a may be integrally formed with the left side wall portion 1272. The left guide shaft 1272a may be formed to protrude from the left side surface of the left side wall portion 1272 toward the left. At least one left guide shaft 1272a may be provided on the left side wall portion 1272, and the number may correspond to the number of the first lifting hole 1211a and the first tilting hole 1251. For example, two left guide shafts 1272a may be formed spaced apart in the front-rear direction. The left guide shaft 1272a may be inserted into the first tilting hole 1251 and the first lifting hole 1211a, which are corresponding and connected to each other. The left guide shaft 1272a may be inserted in the order of the first tilting hole 1251 and the first lifting hole 1211a. When the moving plates 1250 and 1260 perform linear reciprocating motion, the left guide shaft 1272a can be guided along the first inclined hole 1251 and the first lifting hole 1211a. The left guide shaft 1272a can be formed such that its diameter is smaller than the width of the first inclined hole 1251 and the width of the first lifting hole 1211a.

[0384] A left cap 1272b can be installed on the left guide shaft 1272a. The left cap 1272b can be installed on the left guide shaft 1272a by screw engagement or insertion engagement so as to be inserted into the first lifting hole 1211a and the first tilting hole 1251. The left cap 1272b can be inserted in the order of the first lifting hole 1211a and the first tilting hole 1251. The left cap 1272b includes a body formed with an outer diameter that is suitable for the width of the first lifting hole 1211a and the width of the first tilting hole 1251, and can be formed with a circular flange at the left end of the body having an outer diameter larger than the width of the first tilting hole 1251. When the left cap 1272b is installed on the left guide shaft 1272a inserted into the first tilting hole 1251 and the first lifting hole 1211a, the left end of the left cap 1272b, which is formed with a circular flange, can be configured to face and be adjacent to the left side of the left fixing plate 1210. The left cap 1272b can prevent the left guide shaft 1272a from disengaging from the first lifting hole 1211a and the first tilting hole 1251, and can perform the function of stably guiding the left guide shaft 1272a within the first lifting hole 1211a and the first tilting hole 1251.

[0385] The lifting body 1270 includes a right side wall 1273. The right side wall 1273 may be formed in a shape that bends upwards from the right end of the lifting plate 1271. The right side wall 1273 may be a long, vertically oriented square plate. The right side wall 1273 may be integrally formed with the lifting plate 1271. The right side wall 1273 may be arranged adjacent to the right moving plate 1260 such that its right side faces the left side of the right moving plate 1260. The right side wall 1273 may have a shape and arrangement symmetrical to the left side wall 1272.

[0386] A right-side guide shaft 1273a may be provided on the right-side wall portion 1273. The right-side guide shaft 1273a may be integrally formed with the right-side wall portion 1273. The right-side guide shaft 1273a may be formed to protrude from the right side of the right-side wall portion 1273 toward the right. At least one or more right-side guide shafts 1273a may be provided on the right-side wall portion 1273, and the number may correspond to the number of the second lifting holes 1221a and the second inclined holes 1261. For example, two right-side guide shafts 1273a may be formed spaced apart in the front-rear direction. The right-side guide shaft 1273a may be inserted into the corresponding and communicating second inclined holes 1261 and second lifting holes 1221a. The right-side guide shaft 1273a may be inserted in the order of the second inclined holes 1261 and the second lifting holes 1221a. When the moving plates 1250 and 1260 perform linear reciprocating motion, the right-side guide shaft 1273a may be guided along the second inclined holes 1261 and the second lifting holes 1221a. The right guide shaft 1273a can be formed such that its diameter is smaller than the width of the second inclined hole 1261 and the width of the second lifting hole 1221a.

[0387] A right-side cap 1273b can be installed on the right-side guide shaft 1273a. The right-side cap 1273b can be installed on the right-side guide shaft 1273a by screw engagement or insert engagement so as to be inserted into the second lifting hole 1221a and the second tilting hole 1261. The right-side cap 1273b can be inserted in the order of the second lifting hole 1221a and the second tilting hole 1261. The right-side cap 1273b includes a body formed with an outer diameter having a width suitable for the width of the second lifting hole 1221a and the second tilting hole 1261, and can be formed such that the right end of the body has a circular flange with an outer diameter larger than the width of the second tilting hole 1261. When the right-side cap 1273b is installed on the right-side guide shaft 1273a inserted into the second tilting hole 1261 and the second lifting hole 1221a, the right end of the right-side cap 1273b, which has a circular flange, can be configured to face and be adjacent to the right side of the right-side fixing plate 1220. The right cap 1273b can prevent the right guide shaft 1273a from disengaging from the second lifting hole 1221a and the second tilting hole 1261, and can perform the function of stably guiding the right guide shaft 1273a within the second lifting hole 1221a and the second tilting hole 1261.

[0388] The left cap 1272b and the right cap 1273b can be detached and installed from the left guide shaft 1272a and the right guide shaft 1273a, respectively. Therefore, in the event of maintenance, the lifting body 1270 can be easily separated from the left and right fixed plates 1210, 1220 and the left and right movable plates 1250, 1260. Furthermore, after maintenance is completed, the lifting body 1270 can be easily installed onto the left and right fixed plates 1210, 1220 and the left and right movable plates 1250, 1260.

[0389] When the movable plates 1250 and 1260 connected to the movable body 1240 reciprocate linearly in the front-back direction, the left guide shaft 1272a and the left cap 1272b can be guided by the inner surface of the first inclined hole 1251 to rise or fall along the first lifting hole 1211a in the vertical direction. Similarly, the right guide shaft 1273a and the right cap 1273b can be guided by the inner surface of the second inclined hole 1261 to rise or fall along the second lifting hole 1221a in the vertical direction. Here, the inner surface of the first inclined hole 1251 can be either the upper or lower inner surface of the first inclined hole 1251, and the inner surface of the second inclined hole 1261 can be either the upper or lower inner surface of the second inclined hole 1261. The left guide shaft 1272a and the left cap 1272b can rise or fall in the same direction as the right guide shaft 1273a and the right cap 1273b. The lifting body 1270 can move up and down in the vertical direction along with the lifting of the left guide shaft 1272a and the left cap 1272b, as well as the lifting of the right guide shaft 1273a and the right cap 1273b. For example, the vertical movement of the lifting body 1270 can refer to its vertical movement. Guided by the lifting holes 1211a, 1221a and the tilting holes 1251, 1261, the lifting body 1270 can move up and down in a certain horizontal state.

[0390] A first hinge member 1274 may be formed on the lifting plate 1271. The first hinge member 1274 can hinge the lifting plate 1271 to the massage plate 1300. The first hinge member 1274 may be formed to protrude upward from the upper surface of the front portion of the lifting plate 1271. The first hinge member 1274 may have a triangular shape with the upper corner rounded. Multiple pairs of first hinge members 1274 may be provided, with two pairs of first hinge members 1274 spaced apart in the left-right direction. For example, two pairs of first hinge members 1274 may be provided. The two pairs of first hinge members 1274 may have a certain interval in the left-right direction and may be arranged symmetrically on the lower surface of the lifting plate 1271.

[0391] A first elastic body connecting portion 1275 may be formed on the lifting plate 1271. The first elastic body connecting portion 1275 may be formed on the upper surface of the lifting plate 1271. The first elastic body connecting portion 1275 may be formed in a shape that protrudes upward from the upper surface of the lifting plate 1271. When viewed from above, the first elastic body connecting portion 1275 may be formed in a "C" shape. The first elastic body connecting portions 1275 may be configured such that the plurality of first elastic body connecting portions 1275 are spaced apart in the front-rear direction. For example, two first elastic body connecting portions 1275 may be formed, and the two first elastic body connecting portions 1275 may be arranged spaced apart in the front-rear direction. One of the two first elastic body connecting portions 1275 may be formed at the center of the front end of the lifting plate 1271, and the other of the two first elastic body connecting portions 1275 may be formed at the very center of the lifting plate 1271. The two first elastic body connecting portions 1275 may be arranged in a shape that intersects perpendicularly with the two pairs of first hinge members 1274. One end of the elastic body 1276 can be connected to the first elastic body joint 1275. For example, the lower end of the elastic body 1276 is housed inside the first elastic body joint 1275, thereby allowing it to be connected to the lifting body 1270. The lower end of the elastic body 1276 can be fixed to the first elastic body joint 1275 by a separate fixing member. The elastic body 1276 connected to the first elastic body joint 1275 can be a spring.

[0392] Reference Figure 18 and Figure 19 The base 1010 includes a massage plate 1300. The massage plate 1300 can be a wide, flat, square plate formed in the horizontal direction. The lower surface of the massage plate 1300 can be connected to the upper part of the lifting plate 1271. The massage plate 1300 can be raised and lowered by the lifting unit 1200. The massage plate 1300 can rise or fall together with the lifting body 1270 of the lifting unit 1200 in the vertical direction. For massaging the user, a bracket 1400, a drive unit 1500, eccentric rotating parts 1600 and 1700, and massage parts 1810, 1820, 1830, and 1840 can be provided on the upper surface of the massage plate 1300. The structures provided on the upper surface of the massage plate 1300 can rise and fall together with the massage plate 1300.

[0393] A second hinge member 1310 may be formed on the massage plate 1300. The second hinge member 1310, together with the first hinge member 1274, constitutes a structure that hinges the massage plate 1300 to the lifting plate 1271. The second hinge member 1310 may be formed to protrude downward from the lower surface of the front portion of the lifting plate 1271. The second hinge member 1310 may have a triangular shape with its lower corner rounded. Two second hinge members 1310 may be provided. The two second hinge members 1310 may be spaced apart in the left-right direction and may be arranged symmetrically on the lower surface of the massage plate 1300.

[0394] A second hinge member 1310 disposed on the left side of the lower surface of the massage plate 1300 can be accommodated between a pair of first hinge members 1274 disposed on the left side of the lower surface of the lifting plate 1271. Similarly, a second hinge member 1310 disposed on the right side of the lower surface of the massage plate 1300 can be accommodated between a pair of first hinge members 1274 disposed on the right side of the lower surface of the lifting plate 1271. In this state, a hinge axis 1274a, which is elongated in the left-right direction, is inserted into the first hinge members 1274 and the second hinge member 1310, thereby allowing the massage plate 1300 and the lifting plate 1271 to be hinged together. The massage plate 1300 can rotate back and forth about the hinge axis 1274a.

[0395] A second elastic body coupling portion 1320 may be formed on the massage plate 1300. The second elastic body coupling portion 1320 may be formed on the lower surface of the massage plate 1300 opposite to the first elastic body coupling portion 1275. The second elastic body coupling portion 1320 may be formed to protrude downward from the lower surface of the massage plate 1300. The second elastic body coupling portion 1320 may be formed to appear as an "O" shape when viewed from below. Multiple second elastic body coupling portions 1320 may be provided with a certain interval in the front-back direction. For example, two second elastic body coupling portions 1320 may be formed corresponding to the first elastic body coupling portion 1275, and the two second elastic body coupling portions 1320 may be arranged spaced apart in the front-back direction. One of the two second elastic body coupling portions 1320 may be formed at the center of the front end of the massage plate 1300, and the other of the two second elastic body coupling portions 1320 may be formed near the center of the massage plate 1300.

[0396] The second elastomer coupling portion 1320 can be connected to the other end of the elastomer 1276. For example, the upper end of the elastomer 1276 is housed within the second elastomer coupling portion 1320, thereby allowing it to be connected to the massage plate 1300. The upper end of the elastomer 1276 can be fixed to the second elastomer coupling portion 1320 by a separate fixing member. The elastomer 1276 can support the lower part of the massage plate 1300. When no external force is applied to the massage plate 1300, the elastomer 1276 can keep the massage plate 1300 in a certain state. For example, when the external force applied to the massage plate 1300 is removed, the elastomer 1276 can keep the massage plate 1300 in a horizontal state under the action of elastic restoring force. That is, the massage plate 1300 can remain horizontal when no external force is applied. When an external force is applied, the massage plate 1300 can tilt relative to the lifting plate 1271 about the hinge axis 1274a under the action of the applied external force. If the applied external force is removed, it can return to a horizontal state. The massage plate 1300 can tilt freely to accommodate the user's spinal curvature due to its hinge connection with the lifting plate 1271 and its connection with the lifting plate 1271 through the elastic body 1276.

[0397] Figure 20 This is a right view showing the massage board of another embodiment of the present invention in a lowered state under the action of the lifting unit. Figure 21 This is a right view showing the massage board of another embodiment of the present invention in a raised state under the action of the lifting unit.

[0398] Reference Figures 18 to 21 The rising or falling process of the massage board 1300 based on the lifting unit 1200 can be observed.

[0399] like Figure 20As shown, when the massage plate 1300 is in a lowered state, and the drive unit 1230 is activated to raise the massage plate 1300, the rod 1231 of the drive unit 1230 can move forward and be pulled into the interior of the drive unit 1230's housing. If the rod 1231 moves forward, the movable body 1240 connected to the rear end of the rod 1231 can roll on the tracks 1201 and 1202 and move forward together with the rod 1231. If the movable body 1240 moves forward, the left movable plate 1250 and the right movable plate 1260 connected to the left and right sides of the movable body 1240 can move forward together with the movable body 1240. If the left movable plate 1250 and the right movable plate 1260 move forward, the left guide shaft 1272a and the left cap 1272b of the lifting body 1270 inserted into the first inclined hole 1251 can rise vertically along the inner surface of the first inclined hole 1251 and along the first lifting hole 1211a. At the same time, the right guide shaft 1273a and the right cap 1273b of the lifting body 1270 inserted into the second inclined hole 1261 can also rise vertically along the inner surface of the second inclined hole 1261 and along the second lifting hole 1221a. If the left guide shaft 1272a and the left cap 1272b, as well as the right guide shaft 1273a and the right cap 1273b, rise, the lifting body 1270 can rise vertically along the lifting holes 1211a and 1221a, and the massage plate 1300 connected to the upper part of the lifting body 1270 can also rise vertically along with the lifting body 1270. Thus, if the massage plate 1300 rises, the massage module 1000 of the massage machine can be accessed from... Figure 20 The state becomes like Figure 21 The state shown.

[0400] like Figure 21As shown, when the massage plate 1300 is in the raised state, and the drive unit 1230 is activated to lower the massage plate 1300, the rod 1231 of the drive unit 1230 can move rearward and be pushed outward from the housing of the drive unit 1230. If the rod 1231 moves rearward, the movable body 1240 connected to the rear end of the rod 1231 can roll on the tracks 1201 and 1202 and move rearward together with the rod 1231. If the movable body 1240 moves rearward, the left movable plate 1250 and the right movable plate 1260 connected to the left and right sides of the movable body 1240 can move rearward together with the movable body 1240. If the left movable plate 1250 and the right movable plate 1260 move towards the rear, the left guide shaft 1272a and the left cap 1272b of the lifting body 1270 inserted into the first inclined hole 1251 can descend vertically along the inner surface of the first inclined hole 1251 and along the first lifting hole 1211a. At the same time, the right guide shaft 1273a and the right cap 1273b of the lifting body 1270 inserted into the second inclined hole 1261 can also descend vertically along the inner surface of the second inclined hole 1261 and along the second lifting hole 1221a. If the left guide shaft 1272a and the left cap 1272b, as well as the right guide shaft 1273a and the right cap 1273b, descend, the lifting body 1270 can descend vertically along the lifting holes 1211a and 1221a, and the massage plate 1300 connected to the upper part of the lifting body 1270 can also descend vertically along with the descent of the lifting body 1270. Thus, if the massage plate 1300 descends, the massage module 1000 of the massage machine can be accessed from... Figure 21 The state becomes like Figure 20 The state shown.

[0401] Reference Figure 18 and Figure 19 The massage module 1000 includes a mounting bracket 1400. The mounting bracket 1400 can be provided to the upper surface of the massage plate 1300. The mounting bracket 1400 can serve as a medium for mounting a first eccentric rotating member 1600, to which the first and second massage members 1810, 1820 are connected, and a second eccentric rotating member 1700, to which the third and fourth massage members 1830, 1840 are connected, on the upper part of the massage plate 1300. The mounting bracket 1400 can be connected to the massage plate 1300 by screws while positioned on the upper surface of the massage plate 1300. If necessary, the mounting bracket 1400 can also be integrally formed with the massage plate 1300.

[0402] Figure 22 This is an exploded perspective view showing a mounting bracket and attitude-maintaining unit according to another embodiment of the present invention. Figure 23 This is a perspective view showing an eccentric rotating component and a massage component according to another embodiment of the present invention. Figure 24 It is Figure 23 An exploded perspective view showing the eccentric rotating component.

[0403] Reference Figure 22 The mounting bracket 1400 includes a mounting plate 1410. The mounting plate 1410 can be formed into a square plate and configured to be wide in the horizontal direction. The mounting plate 1410 can be placed in contact with the upper surface of the massage plate 1300. The mounting plate 1410 is fixed to the massage plate 1300 by screws connecting its four corner sides.

[0404] The mounting bracket 1400 includes a first shaft support portion 1420. The first shaft support portion 1420 may be in the form of a rectangular block that is elongated in the left-right direction. The first shaft support portion 1420 may be formed to stand vertically in the left-right direction at the front of the upper surface of the mounting plate 1410.

[0405] The first shaft support portion 1420 may have a first shaft support groove 1421 recessed downwards formed on the left and right sides of its upper surface, respectively. The left and right first shaft support grooves 1421 may be arranged side by side and spaced apart in the left-right direction. The first shaft support groove 1421 may be formed with a cross-section in which a portion of the lower end of a semicircle is horizontally cut off at the rear. The front portion of the first shaft support groove 1421 may have a smaller diameter than the rear portion. The first shaft support groove 1421 may be formed with a stepped shape in which the rear portion is more recessed than the front portion.

[0406] The mounting bracket 1400 includes a second shaft support portion 1430. The second shaft support portion 1430 may be a rectangular block that is elongated in the left-right direction. The second shaft support portion 1430 may be spaced apart and positioned behind the left side of the first shaft support portion 1420. The second shaft support portion 1430 may be formed to have a thinner front-to-back thickness than the first shaft support portion 1420. The second shaft support portion 1430 may be formed vertically on the left side of the center of the upper surface of the mounting plate 1410. The second shaft support portion 1430 may be formed at the same height as the first shaft support portion 1420. The second shaft support portion 1430 may be formed parallel to the first shaft support portion 1420. The right side of the back surface of the second shaft support portion 1430 may be recessed towards the front. The recessed portion of the second shaft support portion 1430 may be formed from the upper surface to the right side of the second shaft support portion 1430.

[0407] A first transmission gear 1433 may be provided in the second shaft support portion 1430. The first transmission gear 1433 may be axially engaged with the second shaft support portion 1430 such that a portion of its front side is accommodated within a recessed portion of the second shaft support portion 1430. The first transmission gear 1433 may be axially engaged with a horizontal shaft formed in the front-rear direction of the second shaft support portion 1430. The rear portion of the first transmission gear 1433 may protrude rearward beyond the back side of the second shaft support portion 1430. The right side portion of the first transmission gear 1433 may protrude rightward beyond the right side of the second shaft support portion 1430. The left end of the first transmission gear 1433 may mesh with the right end of the first linkage gear 1640, wherein the first linkage gear 1640 engages with the first eccentric rotating member 1600. Therefore, the first transmission gear 1433 may receive rotational force provided by the first linkage gear 1640.

[0408] The second shaft support portion 1430 may have a second shaft support groove 1431 recessed downwards formed on the left side of its upper surface. The central portion of the second shaft support groove 1431 may be formed into a semi-circular shape. The second shaft support groove 1431 may be formed into a semi-circular shape with a front portion and a rear portion having a diameter smaller than that of the central portion. The second shaft support groove 1431 may be formed into a stepped shape with the central portion being more recessed than the front and rear portions.

[0409] The support bracket 1400 includes a third axis support portion 1440. The third axis support portion 1440 may be a rectangular block that is elongated in the left-right direction. The third axis support portion 1440 may be spaced apart and positioned behind the right side of the first axis support portion 1420. The third axis support portion 1440 may be formed to have a thinner front-to-back thickness than the first axis support portion 1420. The second axis support portion 1430 may be formed vertically on the right side of the center of the upper surface of the mounting plate 1410. The third axis support portion 1440 may be formed at the same height as the first axis support portion 1420. The third axis support portion 1440 may be formed parallel to the first axis support portion 1420. The left side of the front of the third axis support portion 1440 may be recessed towards the rear. The recessed portion of the third axis support portion 1440 may be formed from the upper surface to the left side of the third axis support portion 1440. The third axis support 1440 can be formed in the same shape as when the second axis support 1430 is rotated 180 degrees with an imaginary vertical axis as a reference. The third axis support 1440 can be substantially the same as the second axis support 1430.

[0410] A second transmission gear 1443 may be provided in the third shaft support portion 1440. The second transmission gear 1443 may be axially engaged with the third shaft support portion 1440 such that a portion of its rear side is accommodated within a recessed portion of the third shaft support portion 1440. The second transmission gear 1443 may be axially engaged with a horizontal axis formed in the front-rear direction of the third shaft support portion 1440. The front portion of the second transmission gear 1443 may protrude further forward than the front surface of the third shaft support portion 1440. The left portion of the second transmission gear 1443 may protrude further to the left than the left side of the third shaft support portion 1440. The right end of the second transmission gear 1443 may mesh with the left end of the second linkage gear 1740, wherein the second linkage gear 1740 engages with the second eccentric rotating member 1700. The left end of the second transmission gear 1443 may mesh with the right end of the first transmission gear 1433. Thus, the second transmission gear 1443 can receive the rotational force provided by the first transmission gear 1433 and transmit it to the second linkage gear 1740.

[0411] The third shaft support portion 1440 may have a third shaft support groove 1441 recessed downwards formed on the right side of its upper surface. The central portion of the third shaft support groove 1441 may be formed into a semi-circular shape. The third shaft support groove 1441 may be formed into a semi-circular shape with a front portion and a rear portion having a diameter smaller than that of the central portion. The third shaft support groove 1441 may be formed into a stepped shape with the central portion being more recessed than the front and rear portions. The third shaft support groove 1441 may have the same shape as the second shaft support groove 1431.

[0412] The mounting bracket 1400 includes a fourth axis support portion 1450. The fourth axis support portion 1450 may be a rectangular block that is elongated in the left-right direction. The fourth axis support portion 1450 may be formed vertically on the rear portion of the upper surface of the mounting plate 1410. The fourth axis support portion 1450 may be spaced apart from the rear side of the second axis support portion 1430 and the third axis support portion 1440. The fourth axis support portion 1450 may be formed in the same shape as when the first axis support portion 1420 is rotated 180 degrees relative to an imaginary vertical axis. The fourth axis support portion 1450 may be substantially identical to the first axis support portion 1420.

[0413] The fourth shaft support portion 1450 may have a fourth shaft support groove 1451 recessed downwards formed on the left and right sides of its upper surface, respectively. The left and right fourth shaft support grooves 1451 may be arranged side by side and spaced apart in the left-right direction. The fourth shaft support groove 1451 may be formed with a cross-section in which a portion of the lower end of the semicircle is horizontally cut off at the front. The rear portion of the fourth shaft support groove 1451 may have a smaller diameter than the front portion. The fourth shaft support groove 1451 may be formed with a stepped shape in which the front portion is more recessed than the rear portion. The fourth shaft support groove 1451 may have the same shape as the first shaft support groove 1421.

[0414] The bracket 1400 includes a first shaft support cover 1420a. The first shaft support cover 1420a may be an elongated cover formed in the left-right direction. The first shaft support cover 1420a is connected to the upper part of the first shaft support portion 1420. For example, the first shaft support cover 1420a may be fixed to the first shaft support portion 1420 by screws or the like, with its lower surface placed on the upper surface of the first shaft support portion 1420.

[0415] The first shaft support cover 1420a may have a fifth shaft support groove 1421a recessed upwards on the left and right sides of its lower surface, respectively. The left and right fifth shaft support grooves 1421a may be arranged side by side and spaced apart in the left-right direction. The fifth shaft support grooves 1421a are only positioned vertically opposite to the first shaft support grooves 1421a, and may be formed in a substantially identical form. The fifth shaft support grooves 1421a may be arranged in a form that corresponds to and is vertically symmetrical with the first shaft support grooves 1421a when the first shaft support portion 1420a and the first shaft support cover 1420a are connected.

[0416] A first rotation sensing sensor portion 1423a may be provided on the upper surface of the first shaft support cover 1420a. The first rotation sensing sensor portion 1423a may be connected to the left side and the right side of the upper surface of the first shaft support cover 1420a, respectively. The first rotation sensing sensor portion 1423a may be disposed on the upper part of the first shaft support groove 1421 and the fifth shaft support groove 1421a. The first rotation sensing sensor portion 1423a may be configured to protrude forward beyond the front end of the first shaft support cover 1420a. The first rotation sensing sensor portion 1423a may function to sense the rotation of the first eccentric rotating component 1600 and the second eccentric rotating component 1700. For example, the first rotation sensing sensor portion 1423a may sense the rotation of the first front shaft 1611 and the second front shaft 1711.

[0417] The bracket 1400 includes a second shaft support cover 1430a. The second shaft support cover 1430a is connected to the upper part of the second shaft support portion 1430. For example, the second shaft support cover 1430a can be fixed to the second shaft support portion 1430 by screws or the like, with its lower surface placed on the upper surface of the second shaft support portion 1430.

[0418] The second shaft support cover 1430a may have a sixth shaft support groove 1431a recessed upward on its lower surface. The sixth shaft support groove 1431a is simply positioned opposite the second shaft support groove 1431 vertically, and can be formed in a substantially identical form. The sixth shaft support groove 1431a can be configured to be vertically symmetrical with the second shaft support groove 1431 when the second shaft support portion 1430 and the second shaft support cover 1430a are connected.

[0419] The bracket 1400 includes a third shaft support cover 1440a. The third shaft support cover 1440a is connected to the upper part of the third shaft support portion 1440. For example, the third shaft support cover 1440a can be fixed to the third shaft support portion 1440 by screws or the like, with its lower surface placed on the upper surface of the third shaft support portion 1440.

[0420] The third shaft support cover 1440a may have a seventh shaft support groove 1441a recessed upwards formed on its lower surface. The seventh shaft support groove 1441a is simply positioned opposite the third shaft support groove 1441 in terms of vertical orientation, and they can be formed to be substantially the same shape. The seventh shaft support groove 1441a can be configured to be vertically symmetrical with the third shaft support groove 1441 when the third shaft support portion 1440 and the third shaft support cover 1440a are connected.

[0421] The bracket 1400 includes a fourth axis support cover 1450a. The fourth axis support cover 1450a can be a cover formed in a way that extends in the left-right direction. The fourth axis support cover 1450a is connected to the upper part of the fourth axis support portion 1450. For example, the fourth axis support cover 1450a can be fixed to the fourth axis support portion 1450 by screws or the like, with its lower surface resting on the upper surface of the fourth axis support portion 1450. The fourth axis support cover 1450a can be formed in the same shape as when the first axis support cover 1420a is rotated 180 degrees relative to an imaginary vertical axis. The fourth axis support cover 1450a can be substantially the same as the first axis support cover 1420a.

[0422] The fourth shaft support cover 1450a may have an eighth shaft support groove 1451a recessed upwards on the left and right sides of its lower surface, respectively. The left and right eighth shaft support grooves 1451a may be arranged side by side and spaced apart in the left-right direction. The eighth shaft support grooves 1451a are only positioned vertically opposite to the fourth shaft support grooves 1451, and can be formed to be substantially the same shape. The eighth shaft support grooves 1451a may be arranged to be vertically symmetrical with the fourth shaft support grooves 1451 when the fourth shaft support portion 1450 and the fourth shaft support cover 1450a are connected.

[0423] A second rotation sensing sensor 1453a may be provided on the upper surface of the fourth axis support cover 1450a. The second rotation sensing sensor 1453a may be connected to the left side and the right side of the upper surface of the fourth axis support cover 1450a, respectively. The second rotation sensing sensor 1453a may be disposed on the upper part of the fourth axis support groove 1451 and the eighth axis support groove 1451a. The second rotation sensing sensor 1453a may be configured to protrude rearward beyond the rear end of the fourth axis support cover 1450a. The second rotation sensing sensor 1453a may function to sense the rotation of the first eccentric rotating member 1600 and the second eccentric rotating member 1700. For example, the second rotation sensing sensor 1453a may sense the rotation of the first rear axis 1616 and the second rear axis 1716.

[0424] Reference Figure 18 and Figure 22 The massage module 1000 includes a drive unit 1500. The drive unit 1500 is provided to operate the massage components 1810, 1820, 1830, and 1840. The drive unit 1500 can be fixed in a position connected to the upper surface of the massage plate 1300.

[0425] The drive unit 1500 includes a drive gear section 1510. The drive gear section 1510 can be generally formed in a cuboid shape. The drive gear section 1510 can be a speed reducer that reduces the input rotation speed before outputting the speed. The drive gear section 1510 can have an input shaft and an output shaft that are linked together. A portion of the output shaft of the drive gear section 1510 can protrude from the front of the drive gear section 1510 towards the front side. The output shaft of the drive gear section 1510 is connected to a rotation transmission member 1530. The rotation transmission member 1530 can transmit the rotation output through the output shaft of the drive gear section 1510 to a first rear shaft 1616. The drive gear section 1510 can be connected to the massage plate 1300 via a protective cover 1500a fixed to the massage plate 1300, therefore, the drive unit 1500 can be fixed to the massage plate 1300. The upper surface and the back surface of the drive gear section 1510 can be covered by the protective cover 1500a.

[0426] The drive unit 1500 includes a drive motor 1520. The drive motor 1520 may have a rotating shaft that rotates in one direction or another depending on the operating state. For example, the rotating shaft of the drive motor 1520 may rotate in either the forward or reverse direction. The drive motor 1520 may be connected to one side of the drive gear section 1510. For example, the drive motor 1520 may be connected to and fixed to the right side of the drive gear section 1510. The drive motor 1520 and the drive gear section 1510 may be configured as a geared motor. The rotating shaft of the drive motor 1520 may be connected to the input shaft of the drive gear section 1510. The drive motor 1520 can provide rotational force for operating the massage components 1810, 1820, 1830, and 1840. Regarding the rotation of the drive motor 1520, the rotation can be input through the input shaft of the drive gear section 1510, reduced in speed, and then output to the output shaft of the drive gear section 1510. The rotation output to the output shaft of the drive gear section 1510 can be transmitted to the first eccentric rotating member 1600 and the second eccentric rotating member 1700 described below. This will be explained in more detail below.

[0427] Reference Figure 18 , Figure 19 as well as Figures 22 to 24 The massage module 1000 includes eccentric rotating components 1600 and 1700. The eccentric rotating components 1600 and 1700 are rotatably mounted on the upper part of the base 1010. The eccentric rotating components 1600 and 1700 can serve as a medium for linkage between the drive unit 1500 and the massage components 1810, 1820, 1830, and 1840. The eccentric rotating components 1600 and 1700 are provided to convert the rotational motion provided by the drive unit 1500 into lifting motion of the massage components 1810, 1820, 1830, and 1840.

[0428] Multiple eccentric rotating components 1600 and 1700 can be provided. For example, two eccentric rotating components 1600 and 1700 can be provided. The eccentric rotating components 1600 and 1700 include a first eccentric rotating component 1600 located on one side of the upper part of the base 1010 and a second eccentric rotating component 1700 located on the other side of the upper part of the base 1010.

[0429] Reference Figure 18 , Figure 19 as well as Figure 22The first eccentric rotating component 1600 can be supported on the left side of the mounting bracket 1400 and is rotatably mounted on the upper left side of the massage plate 1300. The second eccentric rotating component 1700 can be supported on the right side of the mounting bracket 1400 and is rotatably mounted on the upper right side of the massage plate 1300. The first eccentric rotating component 1600 and the second eccentric rotating component 1700 can be configured side by side. The first eccentric rotating component 1600 and the second eccentric rotating component 1700 can rotate in conjunction when the drive unit 1500 is working. In the following description, the state before the drive unit 1500 is working, or the configuration state of the first and second eccentric rotating components 1600, 1700 and the first to fourth massage components 1810, 1820, 1830, 1840 connected thereto before the drive unit 1500 is working, can be simply referred to as the initial state.

[0430] Reference Figures 22 to 24 The first eccentric rotating component 1600 includes a first shaft portion 1610. The first shaft portion 1610 can be rotatably disposed on the upper side of the base 1010. For example, the first shaft portion 1610 can be disposed on the upper left side of the massage plate 1300 via a mounting bracket 1400.

[0431] The first shaft portion 1610 rotates under the drive of the drive unit 1500. For example, the first shaft portion 1610 can rotate in one direction or another in conjunction with the rotation direction of the drive unit 1500 when the drive unit 1500 is operating. The rotation direction of the drive unit 1500 can be the rotation direction of the rotating shaft of the drive motor 1520. The first shaft portion 1610 can receive the rotational force provided by the drive unit 1500 through the rotation transmission member 1530. The first shaft portion 1610 rotates by receiving the rotational force provided by the drive unit 1500, thereby enabling it to perform the function of eccentrically rotating the first eccentric portion 1650 and the second eccentric portion 1660 described below.

[0432] Reference Figure 23 and Figure 24 The first shaft portion 1610 includes a first front shaft 1611, a first central shaft 1612, and a first rear shaft 1616. The first front shaft 1611, the first central shaft 1612, and the first rear shaft 1616 can be formed independently of each other. The first front shaft 1611, the first central shaft 1612, and the first rear shaft 1616 can be spaced apart from each other in the longitudinal direction. The first front shaft 1611, the first central shaft 1612, and the first rear shaft 1616 can have the same center. For example, the first front shaft 1611, the first central shaft 1612, and the first rear shaft 1616 can have the same axis.

[0433] The first front shaft 1611 may be an elongated circular shaft in the front-rear direction. The first front shaft 1611 may be rotatably disposed on the upper left side of the first shaft support portion 1420. For example, the first front shaft 1611 may be embedded in the first shaft support body 1620 and the front bearing 1630, both of which are inserted into the lower left first shaft support groove 1421 and the upper left fifth shaft support groove 1421a. Thus, the first front shaft 1611 may be rotatably supported on the left side of the first shaft support portion 1420 and the first shaft support cover 1420a covering it. In this case, the first shaft support body 1620 may be accommodated in the larger-diameter rear portion of the first shaft support groove 1421 and the fifth shaft support groove 1421a, and the front bearing 1630 may be accommodated in the smaller-diameter front portion of the first shaft support groove 1421 and the fifth shaft support groove 1421a. The first shaft support 1620 is formed in a shape that corresponds to the rear part shape of the first shaft support groove 1421 and the fifth shaft support groove 1421a, so it is impossible for it to rotate within the first shaft support groove 1421 and the fifth shaft support groove 1421a.

[0434] The first central shaft 1612 can be formed as a circular shaft that is generally elongated in the front-rear direction, with a cuboid connected to its rear end. The first central shaft 1612 can be spaced apart and disposed behind the first front shaft 1611. The first central shaft 1612 can be rotatably mounted on the second shaft support portion 1430. For example, the circular shaft portion of the first central shaft 1612 is inserted into a first cover 1615 whose lower part is inserted into the second shaft support groove 1431 and whose upper part is inserted into the sixth shaft support groove 1431a, so that the first central shaft 1612 can be rotatably supported on the second shaft support portion 1430 and the second shaft support cover 1430a covering it.

[0435] The first central shaft 1612 includes a first dividing shaft 1613. The first dividing shaft 1613 may constitute the front portion of the first central shaft 1612. The first dividing shaft 1613 may be formed in a cylindrical shape.

[0436] A first adjustment protrusion 1613a protruding rearward may be formed on the back side of the first dividing axis 1613. The first adjustment protrusion 1613a may be formed by a protrusion with a fan-shaped cross-section. The first adjustment protrusion 1613a may rotate together with the first dividing axis 1613 with the center of the first central axis 1612 as a reference. The first adjustment protrusion 1613a includes a first adjustment protrusion face 1613b and another first adjustment protrusion face 1613c that meet each other at a certain angle at the center of the first central axis 1612. The first adjustment protrusion 1613a may have the same radius as the radius of the first central axis 1612. The central angle of the first adjustment protrusion 1613a may be 135 degrees. The central angle of the first adjustment protrusion 1613a may be the angle formed by the first adjustment protrusion face 1613b and the other first adjustment protrusion face 1613c that meet at the center of the first central axis 1612.

[0437] The first central axis 1612 includes a second segmented axis 1614 having the same central axis as the first segmented axis 1613. The second segmented axis 1614 may constitute the rear portion of the first central axis 1612. The second segmented axis 1614 may have a shape in which a cuboid is connected to the rear end of a hollow cylinder.

[0438] A first linkage gear 1640 can be connected to the second dividing shaft 1614. The first linkage gear 1640 can be provided to transmit the rotational force generated by the drive unit 1500 to the second eccentric rotating component 1700 described below. A hole corresponding to the shape of the second dividing shaft 1614, with a square hole connecting to the rear end of a circular hole, can be formed in the center of the first linkage gear 1640. The hole formed in the first linkage gear 1640 can penetrate the first linkage gear 1640 in the front-rear direction. The circular hole portion formed in the hole of the first linkage gear 1640 can be inserted into the cylindrical portion formed in the second dividing shaft 1614. The square hole portion formed in the hole of the first linkage gear 1640 can be inserted into the cuboid portion formed in the second dividing shaft 1614. Thus, by inserting the second dividing shaft 1614 into the hole formed in the first linkage gear 1640, the first linkage gear 1640 can rotate together with the second dividing shaft 1614. The first linkage gear 1640 can mesh with the first transmission gear 1433. When the first linkage gear 1640 rotates with the rotation of the second dividing shaft 1614, the first transmission gear 1433 can rotate in the opposite direction to the first linkage gear 1640.

[0439] A second adjustment protrusion 1614a protruding forward can be formed on the front side of the second dividing axis 1614. The second adjustment protrusion 1614a can be formed as a protrusion with a cross-section having a portion of the fan-shaped central angular portion rounded off. The second adjustment protrusion 1614a can rotate together with the second dividing axis 1614 with the center of the first central axis 1612 as a reference. The second adjustment protrusion 1614a includes a second adjustment protrusion face 1614b and a second adjustment protrusion face 1614c forming an angle with respect to the center of the first central axis 1612. The second adjustment protrusion 1614a can have the same radius as the radius of the first central axis 1612. The central angle of the second adjustment protrusion 1614a can be 45 degrees. The central angle of the second adjustment protrusion 1614a can be the angle formed by the second adjustment protrusion face 1614b and the second adjustment protrusion face 1614c.

[0440] The first dividing shaft 1613 and the second dividing shaft 1614 can be inserted into the first cover 1615 and connected in a configuration such that the back side of the first adjusting protrusion 1613a faces the front side of the second dividing shaft 1614 and the front side of the second adjusting protrusion 1614a faces the back side of the first dividing shaft 1613. The first adjusting protrusion 1613a and the second adjusting protrusion 1614a can be located inside the first cover 1615. The first adjusting protrusion 1613a can be located on the rotation path of the second adjusting protrusion 1614a. The second adjusting protrusion 1614a can rotate freely at a certain angle with the rotation of the second dividing shaft 1614 within the first cover 1615 without interference from the first adjusting protrusion 1613a, or it can engage with the first adjusting protrusion 1613a and rotate together with it. One surface 1613b of the first adjusting protrusion and one surface 1614b of the second adjusting protrusion can be separated from or in contact with each other depending on the rotation of the second adjusting protrusion 1614a. The other surface 1613c of the first adjusting protrusion and the other surface 1614c of the second adjusting protrusion can be separated from or in contact with each other depending on the rotation of the second adjusting protrusion 1614a. The first dividing shaft 1613 can rotate together with the second dividing shaft 1614a when the second adjusting protrusion 1614a is engaged with the first adjusting protrusion 1613a. In addition, when the second adjusting protrusion 1614a is separated from the first adjusting protrusion 1613a and is not engaged, the first dividing shaft 1613 will not receive rotational force from the second dividing shaft 1614.

[0441] The first rear shaft 1616 may be a long circular shaft formed in the front-rear direction. The first rear shaft 1616 may be spaced apart and disposed behind the first central shaft 1612. The first rear shaft 1616 may be rotatably disposed on the upper left side of the fourth shaft support portion 1450. For example, the first rear shaft 1616 is embedded in the first shaft support body 1620, the lower part of the first shaft support body 1620 is inserted into the left fourth shaft support groove 1451, and the upper part of the first shaft support body 1620 is inserted into the left eighth shaft support groove 1451a, thereby being rotatably supported on the left side of the fourth shaft support portion 1450 and the fourth shaft support cover 1450a covering it. At this time, the first shaft support body 1620 may be accommodated in the front part with the larger diameter of the fourth shaft support groove 1451 and the eighth shaft support groove 1451a. The first shaft support 1620 is formed in a shape that corresponds to the shape of the fourth shaft support groove 1451 and the eighth shaft support groove 1451a, and therefore cannot rotate within the fourth shaft support groove 1451 and the eighth shaft support groove 1451a.

[0442] A first sensing blade 1603 can be connected to the first shaft portion. The first sensing blade 1603 can be respectively disposed at the front end of the first front shaft 1611 and the rear end of the first rear shaft 1616. The first sensing blade 1603 disposed on the first front shaft 1611 can rotate together with the first front shaft 1611. The first rotation sensing sensor portion 1423a disposed on the left side of the first shaft support portion 1420 senses the rotation of the first sensing blade 1603 disposed on the first front shaft 1611, and thus can sense the rotation of the first front shaft 1611. The first sensing blade 1603 disposed on the first rear shaft 1616 can rotate together with the first rear shaft 1616. The second rotation sensing sensor portion 1453a disposed on the left side of the fourth shaft support portion 1450 senses the rotation of the first sensing blade 1603 disposed on the first rear shaft 1616, and thus can sense the rotation of the first rear shaft 1616. In this way, through rotation sensing, the first eccentric rotating component 1600 and the first and second massage components 1810 and 1820 connected thereto can return to their initial state when the drive unit 1500 stops working.

[0443] Reference Figures 22 to 24 The first eccentric rotating component 1600 includes eccentric portions 1650 and 1660. Eccentric portions 1650 and 1660 can be eccentrically connected to the first shaft portion 1610. Multiple eccentric portions 1650 and 1660 eccentrically connected to the first shaft portion 1610 can be provided. For example, two eccentric portions 1650 and 1660 eccentrically connected to the first shaft portion 1610 can be provided and spaced apart in the front-rear direction.

[0444] The first eccentric rotating component 1600 includes a first eccentric portion 1650 connected to the front side of the first shaft portion 1610. The first eccentric portion 1650 can connect the first front shaft 1611 and the first dividing shaft 1613. The first eccentric portion 1650 can rotate simultaneously with the first front shaft 1611 and the first dividing shaft 1613. The first eccentric portion 1650 can perform the function of raising and lowering the first massage component 1810 described below by eccentric rotation along with the rotation of the first shaft portion 1610.

[0445] The first eccentric portion 1650 includes the first arm 1651. From Figure 23 and Figure 24 During observation, the first arm 1651 can be formed into a shape resembling an elliptical plate, elongated in the left-right direction. The first arm 1651 can be connected in a configuration where its front face is perpendicular to the rear end of the first front axis 1611. The first arm 1651 can be eccentrically connected to the first front axis 1611. The first front axis 1611 can be connected off-center to one side with respect to the center of the first arm 1651. For example, the first front axis 1611 can be... Figure 23 and Figure 24 It is positioned to the left of the first arm 1651 and connected to the front of the first arm 1651. The first arm 1651 can be integrally formed with the first front shaft 1611 and rotate together with the first front shaft 1611.

[0446] The first eccentric portion 1650 includes the second arm 1652. From Figure 23 and Figure 24 Upon observation, the second arm 1652 can be roughly shaped as a square plate with rounded vertices. The second arm 1652 can be connected with its back side perpendicular to the front end of the first dividing axis 1613. The second arm 1652 can be eccentrically connected to the first dividing axis 1613. The first dividing axis 1613 can be connected off-center from the center of the second arm 1652. For example, the first dividing axis 1613 can be... Figure 23 and Figure 24 The second arm 1652 is positioned to the left of the first arm 1651 and connected to its rear side. The second arm 1652 can be integrally formed with and rotate with the first dividing axis 1613. The second arm 1652 can be spaced apart and located behind the first arm 1651. The second arm 1652 can be configured to be parallel to and opposite the first arm 1651.

[0447] The first eccentric portion 1650 includes a first pin 1653. The first pin 1653 can connect the other side of the first arm 1651 to the other side of the second arm 1652. For example, from Figure 23 and Figure 24During observation, one end of the first pin 1653 can be offset to the right of the first arm 1651 with reference to the center of the first arm 1651, and connected to the first arm 1651. The other end of the first pin 1653 can be offset to the right of the second arm 1652 with reference to the center of the second arm 1652, and connected to the second arm 1652. The first pin 1653 can be directly connected to the first massage component 1810. The first pin 1653 can serve as the lifting point of the first eccentric portion 1650. For example, the height and position of the first massage component 1810 can be changed by the first pin 1653 according to the height and position of the eccentric rotation with the first eccentric portion 1650.

[0448] The first pin 1653 can be formed as a cuboid shape with a central portion elongated in the front-rear direction. The first pin 1653 can also be formed as a cylinder with a front portion extending from the front of the central portion towards the front side. The first pin 1653 can also be formed as a cylinder with a rear portion extending from the back of the central portion towards the rear side. The front portion of the first pin 1653 passes through the first arm 1651 from the rear side towards the front side, and the first locking member 1601 is embedded in the outer peripheral surface of the first pin 1653, thereby allowing the first pin 1653 to be rotatably connected to the first arm 1651. The rear portion of the first pin 1653 passes through the second arm 1652 from the front side towards the rear side, and the first locking member 1601 is embedded in the outer peripheral surface of the first pin 1653, thereby allowing the first pin 1653 to be rotatably connected to the first arm 1651. The front portion of the first pin 1653 may protrude toward the front side of the first arm 1651, and the first locking member 1601 may engage with the outer peripheral surface of such protruding portion. The portion protruding from the front portion of the first pin 1653 toward the front side of the first arm 1651 may have a fan-shaped cross-section. The rear portion of the first pin 1653 may protrude toward the rear side of the second arm 1652, and the first locking member 1601 may engage with the outer peripheral surface of such protruding portion. The central portion of the first pin 1653 may be located between the first arm 1651 and the second arm 1652.

[0449] A first gear shaft 1651a may be integrally formed on the first arm 1651. The first gear shaft 1651a may extend in a manner that protrudes from the front of the first arm 1651 toward the front side. The first gear shaft 1651a may be formed at the center of the front of the first arm 1651 and located between the first front shaft 1611 and the first pin 1653.

[0450] A first support gear 1670, a second support gear 1680, and a third support gear 1690 may be provided on the front side of the first arm 1651. The first support gear 1670, the second support gear 1680, and the third support gear 1690 provided on the front side of the first arm 1651 are provided to support the load applied to the first massage component 1810 and to keep the first pin 1653 in a certain posture when massaging the user.

[0451] The first support gear 1670 can be integrally formed with the rear end of the first shaft support 1620 and embedded in the first front shaft 1611 together with the first shaft support 1620. The first support gear 1670 can protrude from the back side of the first shaft support portion 1420 toward the rear. The first support gear 1670 can be configured such that its back side faces the front side of the first arm 1651. Since the first shaft support 1620 is fixed in the left side first shaft support groove 1421 of the first shaft support portion 1420, the first support gear 1670 can be fixedly disposed in the first shaft support portion 1420 together with the integrally formed first shaft support 1620.

[0452] The first support gear 1670 can mesh with the second support gear 1680. The second support gear 1680 can mesh with the first support gear 1670 in a rotatable manner connected to the first gear shaft 1651a. When the first eccentric portion 1650 rotates, the second support gear 1680 can rotate about the first gear shaft 1651a along the outer periphery of the first support gear 1670.

[0453] The second support gear 1680 can mesh with the third support gear 1690. The third support gear 1690 can be fixed to the front portion of the first pin 1653. The third support gear 1690 can be fixed to the first pin 1653 by engaging with a fan-shaped section of the front portion of the first pin 1653 in a matching manner. The third support gear 1690 can rotate together with the first pin 1653. When the first eccentric portion 1650 rotates, the third support gear 1690 rotates in the opposite direction to the first eccentric portion 1650 and the second support gear 1680, thereby inducing a predetermined posture of the first pin 1653.

[0454] The first eccentric rotating component 1600 includes a second eccentric portion 1660 connected to the rear side of the first shaft portion 1610. The second eccentric portion 1660 can connect the second dividing shaft 1614 and the first rear shaft 1616. The second eccentric portion 1660 can rotate simultaneously with the second dividing shaft 1614 and the first rear shaft 1616. The second eccentric portion 1660 can perform the function of raising and lowering the second massage component 1820 described below by eccentric rotation along with the rotation of the first shaft portion 1610.

[0455] The second eccentric portion 1660 includes the third arm 1661. From Figure 23 and Figure 24 Upon observation, the third arm 1661 can be roughly shaped as a square plate with rounded vertices. The third arm 1661 can be connected with its front end perpendicular to the rear end of the second dividing axis 1614. The third arm 1661 can be eccentrically connected to the second dividing axis 1614. The second dividing axis 1614 can be connected to one side with a reference to the center of the third arm 1661. For example, the second dividing axis 1614 can be... Figure 23 and Figure 24 It is positioned to the left of the third arm 1661 and connected to the front of the third arm 1661. The third arm 1661 can be integrally formed with the second dividing axis 1614 and rotate together with the second dividing axis 1614.

[0456] The second eccentric part 1660 includes the fourth arm 1662. From Figure 23 and Figure 24 During observation, the fourth arm 1662 can be formed into a shape resembling an elliptical plate, elongated in the left-right direction. The fourth arm 1662 can be connected in a manner where its back side is perpendicular to the front end of the first rear shaft 1616. The fourth arm 1662 can be eccentrically connected to the first rear shaft 1616. The first rear shaft 1616 can be connected to one side with respect to the center of the fourth arm 1662. For example, the first rear shaft 1616 can be... Figure 23 and Figure 24 It is positioned to the left of the fourth arm 1662 and connected to the back of the fourth arm 1662. The fourth arm 1662 can be integrally formed with the first rear shaft 1616 and rotate together with the first rear shaft 1616.

[0457] The second eccentric portion 1660 includes a second pin 1663. The second pin 1663 can connect the other side of the third arm 1661 to the other side of the fourth arm 1662. For example, from... Figure 23 and Figure 24 During observation, one end of the second pin 1663 can be offset to the right of the third arm 1661, with the center as a reference, and connected to the third arm 1661. The other end of the second pin 1663 can be offset to the right of the fourth arm 1662, with the center as a reference, and connected to the fourth arm 1662. The second pin 1663 can rotate relative to the third arm 1661 and the fourth arm 1662. The second pin 1663 can directly connect to the second massage component 1820. The second pin 1663 can serve as the lifting point of the second eccentric portion 1660. For example, the height and position of the second massage component 1820 can be changed by the height and position of the second pin 1663 according to the eccentric rotation of the second eccentric portion 1660.

[0458] The second pin 1663 can be formed as a cuboid shape with a central portion elongated in the front-rear direction. The second pin 1663 can also be formed as a cylinder with a front portion extending from the front of the central portion towards the front side. The second pin 1663 can also be formed as a cylinder with a rear portion extending from the back of the central portion towards the rear side. The front portion of the second pin 1663 passes through the third arm 1661 from the rear side towards the front side, and the first locking member 1601 is embedded in the outer peripheral surface of the second pin 1663, thereby allowing the second pin 1663 to be rotatably connected to the third arm 1661. The rear portion of the second pin 1663 passes through the fourth arm 1662 from the front side towards the rear side, and the first locking member 1601 is embedded in the outer peripheral surface of the second pin 1663, thereby allowing the second pin 1663 to be rotatably connected to the third arm 1661. The front portion of the second pin 1663 may protrude toward the front side of the third arm 1661, and the first locking member 1601 may engage with the outer peripheral surface of such protruding portion. The rear portion of the second pin 1663 may protrude toward the rear side of the fourth arm 1662, and the first locking member 1601 may engage with the outer peripheral surface of such protruding portion. The portion protruding from the rear portion of the second pin 1663 toward the rear side of the fourth arm 1662 may have a fan-shaped cross-section. The central portion of the second pin 1663 may be located between the third arm 1661 and the fourth arm 1662.

[0459] A second gear shaft 1662a may be integrally formed on the fourth arm 1662. The second gear shaft 1662a may extend in a manner that protrudes from the back side of the fourth arm 1662 toward the rear. The second gear shaft 1662a may be formed at the center of the back side of the fourth arm 1662 and located between the first rear shaft 1616 and the second pin 1663.

[0460] Similar to the first arm 1651, a first support gear 1670, a second support gear 1680, and a third support gear 1690 can be provided on the back of the fourth arm 1662. The first support gear 1670, the second support gear 1680, and the third support gear 1690 provided on the back of the fourth arm 1662 are provided to support the load applied to the second massage component 1820 and to hold the second pin 1663 in a certain posture during massage of the user.

[0461] The first support gear 1670 can be integrally formed with the front end of the first shaft support 1620 and embedded together with the first shaft support 1620 into the first rear shaft 1616. The first support gear 1670 can protrude from the front of the fourth shaft support portion 1450 towards the front. The first support gear 1670 can be configured such that its front face is opposite to the back of the fourth arm 1662. Since the first shaft support 1620 is fixed in the left side fourth shaft support groove 1451 of the fourth shaft support portion 1450, the first support gear 1670 can be fixedly disposed in the fourth shaft support portion 1450 together with the integrally formed first shaft support 1620.

[0462] The first support gear 1670 can mesh with the second support gear 1680. The second support gear 1680 can mesh with the first support gear 1670 in a rotatable manner connected to the second gear shaft 1662a. When the second eccentric portion 1660 rotates, the second support gear 1680 can rotate about the second gear shaft 1662a along the outer periphery of the first support gear 1670.

[0463] The second support gear 1680 can mesh with the third support gear 1690. The third support gear 1690 can be fixed to the rear portion of the second pin 1663. The third support gear 1690 can be fixed to the second pin 1663 by shaft connection with a fan-shaped section in the rear portion of the second pin 1663 in a matching manner. The third support gear 1690 can rotate together with the second pin 1663. When the second eccentric portion 1660 rotates, the third support gear 1690 rotates in the opposite direction to the second eccentric portion 1660 and the second support gear 1680, thereby inducing a predetermined posture of the second pin 1663.

[0464] The first eccentric rotating component 1600 includes first adjusting portions 1613a and 1614a. The first adjusting portions 1613a and 1614a may be disposed on at least any one of the first shaft portion 1610, the first eccentric portion 1650, and the second eccentric portion 1660. For example, the first adjusting portions 1613a and 1614a include the previously described first adjusting protrusion 1613a and second adjusting protrusion 1614a.

[0465] When the drive unit 1500 rotates in one direction in its initial state, causing the first rear shaft 1616 of the first shaft portion 1610 to rotate counterclockwise, the first adjustment portions 1613a and 1614a can delay the eccentric rotation of the first eccentric portion 1650 until the second eccentric portion 1660, which rotates eccentrically under the action of the first rear shaft 1616, has rotated eccentrically by a certain angle. That is, after the second eccentric portion 1660 has rotated eccentrically in the counterclockwise direction by a certain angle, the first adjustment portions 1613a and 1614a can cause the first eccentric portion 1650 to rotate eccentrically in the counterclockwise direction. For example, the certain angle can be 180 degrees. Thus, the first adjustment portions 1613a and 1614a can generate a phase difference between the first eccentric portion 1650 and the second eccentric portion 1660, which have the same phase in the initial state, so that the first eccentric portion 1650 and the second eccentric portion 1660 can rotate eccentrically with different phases. Regarding the first eccentric portion 1650 and the second eccentric portion 1660, their respective rising and falling points can alternately face upwards and rotate eccentrically.

[0466] When the drive unit 1500, which operates in one direction, rotates in another direction, causing the first rear shaft 1616 of the first shaft portion 1610 to rotate clockwise, the first adjustment portions 1613a and 1614a enable the first eccentric portion 1650 and the second eccentric portion 1660, which rotate eccentrically with different phases, to align to the same phase or to rotate eccentrically together in a state of being aligned to the same phase.

[0467] Reference Figures 22 to 24 The second eccentric rotating component 1700 includes a second shaft portion 1710. The second shaft portion 1710 can be rotatably disposed on the upper side of the base 1010. For example, the second shaft portion 1710 can be disposed on the upper right side of the massage plate 1300 via a mounting bracket 1400. The first shaft portion 1610 and the second shaft portion 1710 can be configured to be side by side.

[0468] The second shaft portion 1710 can rotate under the action of the drive unit 1500. For example, when the drive unit 1500 is operating, the second shaft ...

Claims

1. A massage module for a massage machine, characterized in that, include: Base; The first eccentric rotating component includes a first shaft portion rotatably disposed on one side of the upper part of the base, and a first eccentric portion and a second eccentric portion eccentrically connected to one side and the other side of the first shaft portion. The second eccentric rotating component includes a second shaft portion that is rotatably disposed on the upper other side of the base, and a third eccentric portion and a fourth eccentric portion that are eccentrically connected to one side and the other side of the second shaft portion. A drive unit provides rotational force to the first and second shaft portions, causing the first to fourth eccentric portions to rotate eccentrically; and The first to fourth massage components are installed to correspond to the first to fourth eccentric portions and are raised and lowered by the eccentric rotation of the first to fourth eccentric portions. The aforementioned first eccentric rotating component includes a first adjustment part that adjusts the phases of the first eccentric part and the second eccentric part to be the same or different according to the rotation direction of the aforementioned driving unit. The aforementioned second eccentric rotating component includes a second adjustment part that adjusts the phases of the third eccentric part and the fourth eccentric part to be the same or different according to the rotation direction of the aforementioned driving unit. In the initial state before the aforementioned drive unit begins to operate. The first eccentric portion and the second eccentric portion are arranged one after the other in the same phase. The third and fourth eccentric portions are arranged one after the other in the same phase and are located on the sides of the first and second eccentric portions. In the initial state described above, when the drive unit rotates in one direction, After the first adjustment unit causes either the first eccentric part or the second eccentric part to rotate eccentrically by a certain angle, it causes the other eccentric part to rotate eccentrically. The second adjustment unit, after causing any one of the third and fourth eccentric parts to rotate eccentrically by a certain angle, causes the other eccentric part to rotate eccentrically. Under the action of the first adjustment part and the second adjustment part, the first eccentric part and the fourth eccentric part, which are located diagonally opposite each other, and the second eccentric part and the third eccentric part, which are located diagonally opposite each other, alternately rise and fall, thereby causing the first massage component and the fourth massage component, and the second massage component and the third massage component to alternately perform massage. When the aforementioned drive unit rotates in another direction... The first to fourth eccentric portions mentioned above can be restored to the aforementioned initial state. When the aforementioned drive unit rotates in another direction... The first to fourth eccentric parts mentioned above can rise and fall together at the same height when restored to the initial state. A support bracket is connected to the upper part of the aforementioned base. The first and second eccentric rotating components are rotatably mounted on the mounting bracket. The aforementioned support structure is connected to an attitude-maintaining unit. The first to fourth massage components are held in a certain posture by the posture holding unit and rise and fall together at the same height as the initial state under the action of rotation in one or the other direction of the drive unit. The aforementioned attitude-maintaining unit includes: The first guide component and the second guide component are connected to the upper part of the aforementioned bracket in a rear-separated manner; The first restraint component is accommodated on the left side of the first guide component and can move left and right to restrain the first massage component into a certain posture. The second restraint component is accommodated on the left side of the second guide component and can move left and right to restrain the second massage component into a certain posture. The third restraint component is accommodated on the right side of the first guide component and can move left and right to restrain the third massage component into a certain posture. The fourth restraint component is accommodated on the right side of the second guide component and can move left and right to restrain the fourth massage component into a certain posture. A first cover plate, which is connected to the upper part of the first guide member to guide the first massage member and the third massage member; and A second cover plate, which connects to the upper part of the second guide member to guide the second and fourth massage members, or... The aforementioned attitude-maintaining unit includes: The first guide plate to the fourth guide plate are connected to the upper surface of the mounting plate of the aforementioned mounting bracket and are spaced apart in the front-back direction; The lower parts of the first and third supports are slidably constrained by the first and second guide plates and arranged side-by-side to be inserted into the lower parts of the first and third massage components; and The lower parts of the second and fourth supports are slidably constrained by the third and fourth guide plates and are arranged side by side and inserted into the lower parts of the second and fourth massage components.

2. The massage module for a massage machine according to claim 1, wherein, The aforementioned first adjustment section includes: A first adjusting pin protrudes from the outer peripheral surface of the first shaft portion and rotates together with the first shaft portion; and A first adjusting groove is formed on one surface of the second eccentric portion to accommodate the first adjusting pin, and allows the first adjusting pin to rotate freely at a first angle. The aforementioned second adjustment section includes: A second adjusting pin protrudes from the outer peripheral surface of the second shaft portion and rotates together with the second shaft portion; and The second adjustment groove is formed on one surface of the third eccentric portion to accommodate the second adjustment pin and to allow the second adjustment pin to rotate freely at a second angle.

3. The massage module for a massage machine according to claim 1, wherein, The aforementioned first shaft portion includes: A first front axle; a first central axle, which is spaced apart and disposed behind the first front axle and connected to the first front axle via the first eccentric portion; and a first rear axle, which is spaced apart and disposed behind the first central axle and connected to the first central axle via the second eccentric portion. The aforementioned second shaft portion includes: A second front axle is disposed to the right of the first front axle; a second central axle is disposed at a distance from the rear of the second front axle and connected to the second front axle via the third eccentric portion; and a second rear axle is disposed at a distance from the rear of the second central axle and connected to the second central axle via the fourth eccentric portion. The aforementioned first central axis includes: a first dividing axis connected to the aforementioned first eccentric portion; and a second dividing axis separated from the aforementioned first dividing axis and connected to the aforementioned second eccentric portion. The aforementioned second central axis includes: a third dividing axis connected to the aforementioned third eccentric portion; and a fourth dividing axis that is separated from the aforementioned third dividing axis and connected to the aforementioned fourth eccentric portion.

4. The massage module for a massage machine according to claim 3, wherein, The aforementioned first adjustment section includes: A first adjustment protrusion is formed on the back side of the first dividing axis; and a second adjustment protrusion is formed on the front side of the second dividing axis and can engage or disengage with the first adjustment protrusion under the rotation of the second dividing axis. The aforementioned second adjustment section includes: A third adjustment protrusion is formed on the back side of the third dividing axis; and a fourth adjustment protrusion is formed on the front side of the fourth dividing axis and can engage or disengage with the third adjustment protrusion under the rotation of the third dividing axis which is linked to the second dividing axis.

5. The massage module for a massage machine according to claim 1, wherein, Each of the aforementioned first to fourth massage components includes: An embedded ring is embedded in the first to fourth eccentric portions mentioned above; The connecting portion protrudes vertically upward from the outer peripheral surface of the aforementioned embedded ring; The roller bracket is connected to the upper end of the aforementioned connecting part; and The rollers are rotatably connected to the roller bracket and can directly apply pressure to the massage area. The connecting portions of the first to fourth massage components are embedded in the corresponding first to fourth constraint components and supported in a vertical state.

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