Massage machine

Abstract

The objective is to provide a massage machine that can simultaneously massage the lower leg and inner thigh of the patient. [Solution] The seat has a seat and a footrest, the footrest is composed of a pair of left and right side walls, a central wall located between the side walls, and a bottom wall facing the backs of the side walls and the central wall, the central wall is composed of a first central wall and a second central wall provided inside the first central wall, and the second central wall is configured to move up to the upper surface of the seat.

Description

Technical Field

[0001] The present invention relates to a massage machine.

Background Art

[0002] Conventionally, a foot massager comprising a main body unit and a sub-unit, which can massage the thighs of a user by rotating the sub-unit rearward, has been proposed (see, for example, Patent Document 1).

Prior Art Literature

Patent Literature

[0003]

Patent Document 1

Summary of the Invention

Problem to be Solved by the Invention

[0004] In the foot massager described in the above Patent Document 1, the area around the user's knee joint is massaged by sliding the sub-unit upward, and the user's thigh is massaged by rotating the sub-unit rearward, which has the problem that the lower leg and inner thigh of the user cannot be massaged at the same time. Accordingly, the present invention has been made to solve the above-mentioned problem, and an object of the present invention is to provide a massage machine capable of simultaneously massaging the lower leg and inner thigh of a user.

Means for Solving the Problem

[0005] The present invention comprises a seat portion and a footrest, wherein the footrest is constituted by a pair of left and right side walls, a central wall located between the side walls, and a bottom wall opposed to the back surfaces of the side walls and the central wall, the central wall is constituted by a first central wall and a second central wall provided inside the first central wall, and the second central wall is configured to move up to the upper surface of the seat portion. This configuration allows the second central wall to be positioned near the inner thigh of the user.

[0006] Furthermore, it is preferable that the second central wall has a massage section for massaging the area of ​​the user being treated. This configuration allows for a massage of the inner thigh area of ​​the user.

[0007] Furthermore, it is preferable that a sensor is provided on the second central wall or the seat portion, and that the sensor detects whether the second central wall is located on the upper surface of the seat portion. This configuration makes it possible to detect whether the second central wall is located on the upper surface of the seat.

[0008] Furthermore, the second central wall has a massage section for massaging the user's treatment area and a control unit for controlling the drive of the massage section, and it is preferable that the control unit can control the drive of the massage section when the sensor detects that the second central wall is located on the upper surface of the seat. This configuration prevents malfunctions in the massage unit.

[0009] Furthermore, the second central wall is composed of a left-side second central wall located on the left and a right-side second central wall located on the right, and it is preferable that the left-side second central wall and the right-side second central wall are bent in directions that separate them from each other. This configuration allows the user's left and right thighs to be covered from multiple directions.

[0010] Furthermore, the second central wall has a massage section for massaging the user's area to be treated, and it is preferable that the massage section is provided on the left second central wall and the right second central wall, respectively, to massage the user's area to be treated from two directions: inward in the left-right direction and upward. This configuration allows for massage of the user's left and right thighs from two directions: upwards and inwards to the left and right. [Effects of the Invention]

[0011] According to the present invention, the lower leg and inner thigh of the person receiving treatment can be massaged simultaneously. [Brief explanation of the drawing]

[0012] [Figure 1] This is a perspective view of a massage machine according to one embodiment of the present invention. [Figure 2] This is a block diagram of a massage machine according to one embodiment of the present invention. [Figure 3] This is a schematic diagram of the area around the footrest according to one embodiment of the present invention, where (a) is a perspective view showing the state before the second central wall is moved, and (b) is a perspective view showing the state after the second central wall is moved. [Figure 4] This is a schematic diagram showing an enlarged view of the area around the footrest according to one embodiment of the present invention, where (a) shows the state before the second central wall is moved, (b) shows the state during the process of moving the second central wall, and (c) shows the state after the second central wall has been moved. [Figure 5] This is a schematic diagram of the area around the footrest according to one embodiment of the present invention, viewed from the left. (a) shows the state before the second central wall is moved to the upper surface of the seat, and (b) shows the state after the second central wall has been positioned on the upper surface of the seat. [Figure 6] This is a schematic diagram of the area around the footrest according to one embodiment of the present invention, viewed from the left, and shows the process of moving the second central wall to the upper surface of the seat. [Figure 7] This is a schematic diagram of the footrest area according to another embodiment of the present invention, where (a) shows the state after the second central wall has been moved to the upper surface of the seat, and (b) shows the state after the left and right second central walls have been bent from the state in (a).

[0013] [Overall configuration of the massage machine] Hereinafter, the overall configuration of the massage machine 1 according to an embodiment of the present invention will be described. FIG. 1 is a perspective view of the massage machine 1 according to an embodiment of the present invention. FIG. 2 is a block diagram of the massage machine 1 according to an embodiment of the present invention. It should be noted that, in this embodiment, the arrangement and the number of installed massage units M (3a, 5a, 10, 52a) are merely an example, and the present invention is not limited thereto. Appropriate modifications may be made according to the embodiment.

[0014] As shown in FIGS. 1 and 2, the massage machine 1 according to an embodiment of the present invention comprises: a seat section 3 on which a user sits; a backrest section 4 which is provided at a rear part of the seat section 3 and against which the user leans; a footrest 5 which is provided at a front part of the seat section 3; and armrest sections 2 each attached to a side part of the seat section 3. The armrest sections 2, the seat section 3, the backrest section 4, and the footrest 5 function as body support sections that support the user's body. Each part of the massage machine 1 is provided with: massage units M that massage the user (comprising a massage mechanism 10, a hip massage section 3a, a leg massage section 5a, and an inner thigh massage section 52a); a control section 7 that controls the functions of the massage machine 1; an operation section 8 for performing various operations of the massage machine 1; and an air supply / exhaust device 9 for supplying and exhausting air to / from air cells. Each component will be described later.

[0015] [Configuration of Control Section] As shown in FIG. 2, the massage machine 1 is provided with the control section 7 formed of a microcomputer or the like for controlling the driving of the massage units M such as the massage mechanism 10 and the air supply / exhaust device 9 including a pump 9a and a valve 9b. The control section 7 is provided below the seat section 3. Connected to the control section 7 are the operation section 8 for the user to operate the massage machine 1, a storage section 12 storing massage programs, and the like. The massage machine is configured such that the user can operate the operation section 8 to drive each massage unit M and execute various massage operations including massage programs.

[0016] [Configuration of Seat Section] As shown in Figure 1, the seat section 3 is formed of a horizontally elongated rectangular member extending in the left-right direction. The seat section 3 is attached to a base (not shown) that serves as the foundation of the massage machine 1. The seat section 3 is provided with a pair of left and right buttock massage units 3a (massage unit M) for massaging the buttocks of a user seated on the seat section 3. The buttock massage unit 3a is formed of an air cell that expands and contracts by air supply and exhaust.

[0017] On the upper front side of the upper surface of the seat section 3, a sensor 30a for determining whether the second central wall 52 has moved to the upper surface of the seat section 3 is attached (see Figures 5 and 6). A method for determining whether the second central wall 52 has moved to the upper surface of the seat section 3 will be described later. Further, on the front end side of the seat section 3, a swing shaft C for swinging the footrest 5 in the up-down direction is attached (see Figures 5 and 6).

[0018] [Configuration of Backrest Section] As shown in Figure 1, the backrest section 4 is formed of a rectangular member elongated in the height direction. An opening 4a is provided in the backrest section 4. A guide rail 16 is provided inside the backrest section 4. A massage mechanism 10 (massage unit M) is provided via the guide rail 16. The massage mechanism 10 is configured to be capable of massaging the rear torso (for example, shoulders, waist, etc.) of the user seated on the seat section 3 by moving up and down along the guide rail 16.

[0019] [Configuration of Armrest Sections] As shown in Figure 1, the armrest sections 2 are attached as a pair to the left and right sides of the seat section 3. An arm massage unit (not shown) for massaging the user's arm may be provided on the upper surface of the armrest section 2. This allows massaging the arm of the user seated on the massage machine 1 in a state where the user's arm is placed on the arm massage unit (not shown).

[0020] Figure 3 is a schematic diagram of the area around the footrest 5 according to one embodiment of the present invention, where (a) is a perspective view showing the state before the second central wall 52 is moved, and (b) is a perspective view showing the state after the second central wall 52 has been moved. Figure 4 is an enlarged schematic diagram of the area around the footrest 5 according to one embodiment of the present invention, where (a) is a diagram showing the state before the second central wall 52 is moved, (b) is a diagram showing the state during the process of moving the second central wall 52, and (c) is a diagram showing the state after the second central wall 52 has been moved.

[0021] [Footrest configuration] As shown in Figures 1, 3, and 4, the footrest 5 is provided with a pair of recesses 5b on the left and right sides into which the user's legs can be inserted. The recesses 5b consist of a pair of left and right side walls 50a located on the outer surface of the user's legs, a bottom wall 50b located on the back of the user's legs (facing the backs of the pair of left and right side walls 50a and the central wall 50c), a central wall 50c (first central wall 51, second central wall 52) located on the inner surface of the user's legs (between the pair of left and right side walls 50a), and a sole wall 50d located on the soles of the user's feet. The footrest 5 can swing vertically via a pivot axis C attached to the front end of the seat 3.

[0022] Leg massage sections 5a (massage section M) for massaging the user's legs are provided on the inner walls of both the left and right sides of the recess 5b. The leg massage sections 5a are composed of air cells that expand and contract by the supply and exhaust of air. More specifically, one leg massage section 5a is provided on the inner surface of each of the left and right side walls 50a, and one on each of the side surfaces of the central wall 50c. It is preferable that each leg massage section 5a is configured to be able to expand and contract independently. In addition, a foot sole massage section (not shown) for massaging the soles of the user's feet may be provided on the bottom surface of the recess 5b.

[0023] Figure 5 is a schematic diagram of the area around the footrest 5 according to one embodiment of the present invention, viewed from the left, where (a) shows the state before the second central wall 52 is moved to the upper surface of the seat 3, and (b) shows the state after the second central wall 52 has been positioned on the upper surface of the seat 3. Figure 6 is a schematic diagram of the area around the footrest 5 according to one embodiment of the present invention, viewed from the left, and shows the process of moving the second central wall 52 to the upper surface of the seat 3. More specifically, (a) is a diagram showing the state in which the second central wall 52 is being moved upward, (b) is a diagram showing the state when the second central wall 52 has moved to the upper apex, and (c) is a diagram showing the state in which the second central wall 52 is being rotated from the state in (b) and moved toward the seat 3.

[0024] [Construction of the central wall] As shown in Figures 3 to 6, the central wall 50c is composed of a first central wall 51 and a second central wall 52 located inside the first central wall 51. The second central wall 52 is movably provided relative to the first central wall 51. More specifically, the second central wall 52 is configured to move up to the upper surface of the seat 3. In other words, the central wall 50c has a two-layer structure consisting of a first central wall 51 and a second central wall 52. By configuring the second central wall 52 to move up to the top surface of the seat 3, the second central wall 52 can be moved to the top surface of the seat 3 without changing the position of the first central wall 51 (without eliminating the central wall 50c that faces the inner surface of the user's legs (more specifically, the calves)).

[0025] [Configuration of the first central wall] As shown in Figures 3 to 6, leg massage sections 5a for massaging the inner surfaces of the user's legs are attached to both the left and right sides of the first central wall 51. Near the center of the first central wall 51, a space 60 is formed for housing the second central wall 52 (including a guide mechanism 80 for pulling the second central wall 52 out from inside the first central wall 51). More specifically, a space 60 with an opening on its upper surface is formed inside the first central wall 51. In other words, the first central wall 51 has a hollow structure. The space 60 is formed in a roughly rectangular parallelepiped shape with an elongated length in the vertical direction (see Figures 5 and 6 in particular).

[0026] A sensor (not shown) is provided inside the space 60. By providing a sensor (not shown) inside the space 60, it is possible to determine whether the second central wall 52 is located inside the space 60. If the sensor (not shown) determines that the second central wall 52 is not in a state where it has moved to the upper surface of the seat 3 (i.e., it is housed inside the space 60 of the first central wall 51), the control unit 7 controls the massage unit M (more specifically, the inner thigh massage unit 52a attached to the second central wall 52) not to be driven. By doing so, it is possible to prevent the massage unit M (inner thigh massage unit 52a) from being activated even though the second central wall 52 is housed in the first central wall 51. In other words, it is possible to prevent malfunction of the massage unit M (inner thigh massage unit 52a).

[0027] The configuration of the first central wall 51 is merely an example and is not limited to this configuration. Any configuration is acceptable as long as the second central wall 52 can be housed inside the first central wall 51. For example, as shown in Figure 7, a portion of the front wall of the first central wall 51 may be omitted. Specifically, by omitting the front wall of the first central wall 51 by the same width as the front wall of the second central wall 52, the configuration of the guide mechanism 80 can be made simpler.

[0028] For example, a hinge can be used instead of the second guide section, which will be described later. More specifically, one end of the hinge is attached to the guide section 85 that constitutes the first guide section, and the other end of the hinge is attached to the guide section 82 that constitutes the second guide section. In this way, the first guide section (pin 84, guide section 85, guide groove 86) can be replaced with a simpler configuration. In short, a hinge can be used as a substitute for the guide mechanism 80.

[0029] [Configuration of the second central wall] As shown in Figures 3 to 6, the second central wall 52 is housed in a space 60 formed inside the first central wall 51. A gripping part 53 is attached to the upper surface (the side exposed to the outside) of the second central wall 52 for pulling the second central wall 52 out of the first central wall 51. The user can pull the second central wall 52 out of the space 60 formed inside the first central wall 51 by lifting the gripping part 53 with their hand. In this embodiment, the manual type (a method in which the user holds the gripping part 53 and pulls out the second central wall 52 to move the second central wall 52 to the upper surface of the seat part 3) is described as an example, but the method of moving the second central wall 52 to the upper surface of the seat part 3 is just one example and is not limited to this. For example, a method (electric type) may be adopted in which a drive unit (not shown) is provided and the second central wall 52 can be pulled out from the first central wall 51 electrically.

[0030] Massage sections M (inner thigh massage sections 52a) for massaging the user's treatment area (inner thigh) are attached to both the left and right sides of the second central wall 52 (see Figure 3(b), etc.). The inner thigh massage sections 52a are made of air cells. By moving the second central wall 52 onto the upper surface of the seat 3, the inner thigh massage sections 52a can massage the inside of the user's thigh.

[0031] A guide mechanism 80 is attached to the back of the second central wall 52 for pulling the second central wall 52 out from inside the first central wall 51 and moving it to the top surface of the seat 3. The guide mechanism 80 consists of a first guide section for pulling the second central wall 52 out from inside the first central wall 51 and a second guide section for moving the pulled-out second central wall 52 to the top surface of the seat 3.

[0032] [Guide section configuration] As shown in Figures 5 and 6, the guide mechanism 80 consists of a first guide section and a second guide section. The first guide section is for pulling out the second central wall 52 from inside the first central wall 51 and rotating it. More specifically, the first guide section consists of a guide section 85, a guide groove 86 provided in the guide section 85, and a pin 84 inserted through the guide groove 86. The second guide section is for moving the pulled-out second central wall 52 to the upper surface of the seat section 3. More specifically, the second guide section consists of a guide section 82, a guide groove 83 provided in the guide section 82, and a pin 81 inserted through the guide groove 83.

[0033] [Structure of the first guide section] As shown in Figures 5 and 6, the guide section 85 is composed of an L-shaped member that is elongated in the vertical direction. The guide section 85 is provided with a guide groove 86 that follows the shape of the guide section 85. A guide section 82, which constitutes the second guide section, is attached to the front surface of the guide section 85. The guide section 82 will be described later. The back surface of the guide section 85 is fixed to the bottom wall 50b that constitutes the footrest 5.

[0034] The guide groove 86 is formed to conform to the shape of the guide portion 85. More specifically, it is formed in an L-shape that is elongated vertically, extending upward from near the center of the guide portion 85. The pin 84 is connected to the back surface of the guide portion 82, which constitutes the second guide portion. In other words, the second central wall 52 can move along the guide portion 85 (guide groove 86). More specifically, the second central wall 52 allows the guide portion 82 and the pin 84 to move upward along the guide portion 85 (guide groove 86) until they reach the upper end of the guide portion 85 (guide groove 86). Since the guide portion 85 (guide groove 86) is formed in an L-shape, the direction of movement can be changed in the front-rear direction from the upper end of the guide portion 85 (guide groove 86), allowing movement towards the seat portion 3. In other words, after moving the second central wall 52 to the upper end of the guide portion 85 (guide groove 86), the pin 84 rotates within the guide groove 86, thereby rotating the guide portion 82 and the second central wall 52 toward the seat portion 3 (towards the upper surface of the seat portion 3).

[0035] [Structure of Section 2] As shown in Figures 5 and 6, the guide section 82 is composed of an I-shaped member that is elongated in the vertical direction. The guide section 82 is attached to the pin 84 that constitutes the first guide section. In other words, the second guide section moves relative to the first guide section.

[0036] The guide groove 83 is formed to conform to the shape of the guide portion 82. More specifically, it is formed in an I-shape near the center of the guide portion 82, with an elongated vertical dimension. The pin 81 is connected to the back surface of the second central wall 52. In other words, the second central wall 52 can move along the guide portion 82 (guide groove 83). More specifically, the second central wall 52 can move vertically along the pin 81 and the guide portion 82 (guide groove 83) when the footrest 5 is lowered. When the footrest 5 is raised, it can move forward and backward.

[0037] A sensor 30b is attached to the upper end of the guide section 82. The sensor 30b is used to determine whether the second central wall 52 is in a state where it can move up to the upper surface of the seat section 3. More specifically, when the sensor 30b of the guide section 82 and the sensor 30a attached to the seat section 3 come into contact, the control unit 7 can determine that the second central wall 52 is in a state where it can move up to the upper surface of the seat section 3.

[0038] Furthermore, sensors 30b may be attached to the second central wall 52 so that it is possible to determine the position of the second central wall 52 on the upper surface of the seat 3. For example, multiple sensors 30b may be attached to the second central wall 52 at predetermined intervals. By determining which of the multiple attached sensors 30b reacted with the sensor 30a attached to the seat 3, it is possible to determine the position of the second central wall 52 on the upper surface of the seat 3.

[0039] When the control unit 7 determines, based on sensors 30a and 30b, that the second central wall 52 has moved to the upper surface of the seat 3, it enables the operation of the massage unit M (more specifically, the inner thigh massage unit 52a). In other words, when the control unit 7 determines that the second central wall 52 has not moved to the upper surface of the seat 3, it controls the inner thigh massage unit 52a not to be driven, and when it determines that the second central wall 52 has moved to the upper surface of the seat 3, it controls the inner thigh massage unit 52a to be driven. By doing so, it is possible to prevent malfunctions such as the inner thigh massage unit 52a being activated even though the second central wall 52 is housed inside the first central wall 51.

[0040] The process of moving the second central wall 52 to the upper surface of the seat 3 will be explained with reference to Figures 5 and 6. Figure 5(a) shows the state before the second central wall 52 is pulled upward and rotated, and Figure 5(b) shows the state after the second central wall 52 has been pulled upward and rotated (positioned on the upper surface of the seat 3). Also, Figure 6(a) shows the state in which the second central wall 52 is being pulled upward, with the lower side of the second central wall 52 located inside the space 60. Figure 6(b) shows the state when the second central wall 52 has been fully pulled upward. Figure 6(c) shows the state in which the second central wall 52 is being rotated toward the seat 3 from the state in Figure 6(b).

[0041] As shown in Figure 5(a), the second central wall 52 is normally housed in a space 60 formed inside the first central wall 51. At this time, the pin 84 of the first guide section is located below the guide groove 86, and the pin 81 of the second guide section is located below the guide groove 83. The second central wall 52 is attached to the second guide section. More specifically, the pin 81 constituting the second guide section is attached to the back surface of the second central wall 52. The second guide section is attached to the first guide section. More specifically, the pin 84 constituting the first guide section is attached to the back surface of the second guide section.

[0042] Therefore, when a user holds the gripping portion 53 provided on the upper surface of the second central wall 52 in their hand and pulls the second central wall 52 upward, the pin 81, which constitutes the second guide portion, moves upward together with the second central wall 52. More specifically, since the pin 81 is inserted through the guide groove 83, the second central wall 52 and the pin 81 move upward along the guide groove 83 (see Figure 6(a)).

[0043] If pulled upwards, the pin 81 reaches the upper end of the guide groove 83. In other words, the second central wall 52 can no longer move relative to the second guide section. On the other hand, since the second guide section is attached to the first guide section, the second guide section begins to move relative to the first guide section. In other words, the second central wall 52 can move further upwards by the first guide section (see Figure 6(b)). Then, when the pin 84 of the first guide section reaches the upper end of the guide groove 86, the entire second central wall 52 is exposed from inside the first central wall 51 (the space 60 formed in the first central wall 51), and the second central wall 52 can no longer move upward. (See Figure 6(b)).

[0044] In that state (with the entire second central wall 52 exposed from inside the first central wall 51 (the space 60 formed in the first central wall 51)), the second central wall 52 is tilted (rotated) toward the seat 3 (see Figure 6(c)). Since the guide groove 86 is configured in a roughly L-shape, when the second central wall 52 is tilted, the pin 84 that was at the upper end of the guide groove 86 can move along the guide groove 86 in the front-rear direction (towards the seat 3) (see Figure 5(b)). In other words, the second central wall 52 can be moved to any position the user desires on the upper surface of the seat 3.

[0045] When the second central wall 52 is tilted (rotated) toward the seat 3, the sensor 30b attached to the guide portion 82 of the first guide portion and the sensor 30a attached to the upper surface of the seat 3 on the front side come into contact. The contact between sensors 30b and 30a indicates that the second central wall 52 has moved toward the upper surface of the seat 3. In other words, it is determined that the inner thigh massage portion 52a can be driven.

[0046] Figure 7 is a schematic diagram of the area around the footrest 5 according to another embodiment of the present invention, where (a) shows the state after the second central wall 52 has been moved to the upper surface of the seat 3, and (b) shows the state after the left and right second central walls 562 have been bent from the state in (a). As shown in Figure 7, the second central wall 52 of the footrest 5 according to another embodiment is composed of multiple members. The second central wall 52 is composed of a wall portion 55 attached to the guide mechanism 80, a shaft 57 extending in the front-rear direction attached to the upper end of the wall portion 55, and a left second central wall 56 and a right second central wall 56 attached to the shaft 57, which are divided in the left-right direction.

[0047] More specifically, the upper end of the wall portion 55 constituting the second central wall 52 is composed of a left second central wall 56 located on the left side and a right second central wall 56 located on the right side. The left second central wall 56 and the right second central wall 56 can bend in directions away from each other, with the axis 57 as the pivot point. Inner thigh massage sections 52a are attached to both sides of the wall section 55 for massaging the user's treatment area (inner thigh). In addition, inner thigh massage sections 52a are attached to the outer surfaces of the left second central wall 56 and the right second central wall 56 for massaging the user's treatment area (inner thigh).

[0048] In other words, the user's thigh can be covered from multiple directions by the wall 55 and the left and right second central walls 56. Then, the user's inner thigh can be massaged with the inner thigh massage section 52a of the wall 55, and the upper surface of the user's thigh can be massaged with the inner thigh massage sections 52a of the left and right second central walls 56. In other words, the user's thigh can be massaged from two directions: the inner side and the upper side. [Industrial applicability]

[0049] This invention can be applied to a massage machine that can simultaneously massage the lower leg and inner thigh of a patient. [Explanation of Symbols]

[0050] Seat 3 Footrest 5 Side wall 50a Central wall 50c bottom wall 50b 1st central wall 51 2nd central wall 52

Claims

1. It has a seat and a footrest. The footrest is composed of a pair of left and right side walls, a central wall located between the side walls, and a bottom wall facing the backs of the side walls and the central wall. The central wall is composed of a first central wall and a second central wall provided inside the first central wall. A massage machine characterized in that the second central wall is configured to move up to the upper surface of the seat.

2. The massage machine according to claim 1, characterized in that the second central wall has a massage section for massaging the part of the user to be treated.

3. A sensor is provided on the second central wall or the seat portion. The massage machine according to claim 1 or 2, characterized in that the sensor detects whether the second central wall is located on the upper surface of the seat.

4. The second central wall includes a massage section for massaging the area of ​​the user being treated, It includes a control unit that controls the drive of the massage unit, The massage machine according to claim 3, characterized in that the control unit can control the drive of the massage unit when the sensor detects that the second central wall is located on the upper surface of the seat.

5. The massage machine according to claim 1 or 2, wherein the second central wall is composed of a left second central wall located on the left side and a right second central wall located on the right side, and the left second central wall and the right second central wall are bent in directions away from each other.

6. The second central wall has a massage section for massaging the area of ​​the user being treated. The massage machine according to claim 5, wherein the massage section is provided on the left second central wall and the right second central wall, respectively, and massages the user's area to be treated from two directions: inward in the left-right direction and upward.

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