Massage machine

Abstract

The massage machine that can be installed on a chair is configured to be able to massage the shoulders and legs of a person to be treated. [Solution] The massage machine comprises a backrest portion that can be placed on the backrest surface of a chair, a first holding portion that extends forward from the back of the backrest from both the left and right sides of the backrest, at least two first airbags held on opposing surfaces of a pair of tip portions of the first holding portion that are positioned forward from both the left and right sides of the backrest, a seat portion that can be placed on the seat surface of the chair, a pair of second holding portions that extend upward from both the left and right sides of the seat, at least two second airbags held on opposing surfaces of the pair of second holding portions, and a pump that supplies air to at least one of the first airbags and the second airbags, the pump being placed on either the backrest portion or the seat portion.

Description

[Technical Field]

[0001] The present disclosure relates to a massage machine. [Background technology]

[0002] For example, massage machines that can be installed on ordinary chairs such as sofas, reclining chairs, and office chairs that do not have a massage function are known (see, for example, FIG. 9 of Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-135191 Summary of the Invention [Problem to be solved by the invention]

[0004] Massage machines that can be installed on a chair are designed to be small and lightweight so that they can be easily carried around. For this reason, although these types of massage machines can treat the back of a user, they are often not designed to treat other parts of the body. [Means for solving the problem]

[0005] A massage machine according to one embodiment of the present disclosure comprises a backrest portion that can be placed at least on the backrest surface of a chair, a first holding portion that extends forward from the back of the backrest from both the left and right sides of the backrest, at least two first airbags that are held on opposing surfaces of a pair of tip portions of the first holding portion that are positioned forward from both the left and right sides of the backrest, a seat portion that can be placed at least on the seat surface of the chair, a pair of second holding portions that extend upward from both the left and right sides of the seat, at least two second airbags that are held on opposing surfaces of the pair of second holding portions, and a pump that supplies air to at least one of the first airbags and the second airbags, wherein the pump is placed on either the backrest portion or the seat portion. [Effects of the Invention]

[0006] According to the present disclosure, a massage machine that can be installed on at least a chair can be configured to be able to treat the shoulders and legs of a user. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a first perspective view showing an example of the configuration of a massage machine according to an embodiment. [Figure 2] FIG. 2 is a partially enlarged side cross-sectional view showing an example of the configuration of the massage machine according to the embodiment. [Figure 3] FIG. 3 is a second perspective view showing an example of the configuration of the massage machine according to the embodiment. [Figure 4A] FIG. 4A is a partially enlarged side cross-sectional view of the backrest and headrest. [Figure 4B] FIG. 4B is a partially enlarged side cross-sectional view of the backrest and headrest. [Figure 5] FIG. 5 is a third perspective view showing an example of the configuration of the massage machine according to the embodiment. [Figure 6] FIG. 6 is a rear view showing an example of the configuration of the massage machine according to the embodiment. [Figure 7]FIG. 7 is a bottom view showing an example of the configuration of the massage machine (seat portion) according to the embodiment. [Figure 8] FIG. 8 is a diagram for explaining an example of installation of the massage machine according to the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0008] <Summary of Embodiments of the Present Disclosure> The following provides an outline of embodiments of the present disclosure.

[0009] (1) A massage machine according to this embodiment includes a backrest portion that can be placed on at least the back of a chair, first support portions that extend forward from both the left and right sides of the backrest from the rear surface of the backrest, at least two first airbags that are supported on opposing surfaces of a pair of tip portions of the first support portions that are positioned forward from the left and right sides of the backrest, a seat portion that can be placed on at least the seat of the chair, a pair of second support portions that extend upward from both the left and right sides of the seat, at least two second airbags that are supported on opposing surfaces of the pair of second support portions, and a pump that supplies air to at least one of the first airbags and the second airbags, the pump being placed on either the backrest or the seat portion. This allows a massage machine that can be placed on a chair to be configured to massage the shoulders and legs of a user.

[0010] (2) In the above (1), the first holding portion may include the pair of tip portions and a connecting portion that connects the pair of tip portions to the back of the backrest, and the vertical height of the pair of tip portions may be greater than the vertical height of the connecting portion. This allows the first airbag for treating the shoulders and arms of the user to be enlarged in the vertical direction, ensuring a sufficiently large treatment range.

[0011] (3) In the above (2), the first holding portion may be configured with the pair of tip portions and the connecting portion in a U-shape in a plan view, thereby efficiently holding the first airbag that generates a repulsive force when the treatment is applied to the shoulders and arms of the user.

[0012] (4) In any one of the above (1) to (3), the massage machine may further include a first air tube connected to the first airbag and sending air supplied from the pump to the first airbag, a second air tube connected to the second airbag and sending air supplied from the pump to the second airbag, and a flexible connecting sheet connecting the backrest and the seat, wherein the pump is disposed in the seat, and the connecting sheet is configured in a bag shape with a first connecting portion connected to the backrest and a second connecting portion connected to the seat being open, and the first air tube extends from the backrest to the seat through the bag-shaped connecting sheet. This allows the first air tube extending from the pump disposed in the seat to the backrest to be hidden from view from the outside by the connecting sheet.

[0013] (5) In the above (4), the massage machine may further include a switching valve connected to each of the first air tube and the second air tube, and a third air tube connected to each of the pump and the switching valve, the switching valve being configured to switch the air flow path among the first air tube, the second air tube, and the third air tube, and the switching valve being disposed in the seat. This allows the pump and the switching valve to be disposed in the seat, and the length of the third air tube can be reduced.

[0014] (6) In any one of the above (1) to (5), the massage machine further includes a rack disposed on the backrest portion and extending in the vertical direction, and a treatment unit that is movable in the vertical direction along the rack and contacts the back of the user, the backrest portion including a back support portion that contacts the back of the user, and a headrest portion disposed above the backrest portion and tiltable with respect to the backrest portion, and when the headrest portion tilts with respect to the backrest portion, the angle of the treatment unit with respect to the rack may change while the treatment unit moves from the backrest portion to the headrest portion along the rack and while the treatment unit moves from the headrest portion to the backrest portion along the rack. This allows the angle of the treatment unit to be appropriately changed along the curvature of the user's shoulders.

[0015] (7) In the above (6), the rack may be disposed on the backrest portion, the treatment unit may include rollers, the backrest portion may include a first rolling path along which the rollers roll, and the headrest portion may include a second rolling path along which the rollers roll, and when the backrest portion and the headrest portion are linearly disposed, the first rolling path and the second rolling path may be linearly disposed, and when the headrest portion is inclined with respect to the backrest portion, the first rolling path and the second rolling path may be inclined relative to each other at an angle corresponding to the inclination angle of the headrest portion with respect to the backrest portion. This allows the angle of the treatment unit to be changed according to the angle of the headrest portion without requiring a complex configuration such as a dedicated actuator for changing the angle.

[0016] (8) In any one of the above (1) to (7), the seat may be able to be placed on a stand having legs. By placing the massage machine on the stand, the seat height required for treatment can be ensured.

[0017] (9) In the above (8), the base may include a fixing portion extending upward from one end of the leg portion, and the backrest may include an inserting portion into which the fixing portion is inserted. This allows the seat to be placed on the base and the backrest to be fixed by the fixing portion, allowing the massage machine to assume a posture required for treatment.

[0018] <Details of the embodiment of the present disclosure> DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. At least some of the following preferred embodiments may be combined in any desired manner.

[0019] [1. Overall configuration of the massager] FIG. 1 is a first perspective view showing an example of the configuration of a massage machine according to an embodiment.

[0020] The massage machine 10 includes a backrest portion 100 and a seat portion 200. In reality, the backrest portion 100 and the seat portion 200 are each covered with a fabric cover, but the cover is omitted in FIG.

[0021] In the massage machine 10 according to the embodiment, the backrest 100 and the seat 200 are connected by a connecting sheet, which will be described later. That is, the backrest 100 is not connected to the seat 200 by a reclining mechanism or the like, but is connected to the seat 200 via a cloth-like connecting sheet.

[0022] The seat 200 of the massage machine 10 can be installed on the seat of a chair. The backrest 100 of the massage machine 10 can be installed on the backrest of a chair. The massage machine 10 can be installed on a chair that does not have a massage function, such as a sofa, a reclining chair, or an office chair. A person to be treated can use the massage machine 10 by sitting on the massage machine 10 installed on a chair. Furthermore, the seat 200 of the massage machine 10 can be installed on the floor, and the backrest 100 of the massage machine 10 can be installed on a wall. This allows a person to use the massage machine 10 by sitting on the massage machine 10 installed like a legless chair.

[0023] [2. Backrest] The backrest portion 100 includes a back support portion 110 and a headrest portion 120. The back support portion 110 is generally plate-shaped and extends in the vertical direction. The headrest portion 120 is disposed above the back support portion 110. The back support portion 110 comes into contact with the back of the user and supports the back. The headrest 120 comes into contact with the back of the user's head and supports the back of the head.

[0024] Two racks 111R and 111L extending in the vertical direction are arranged on the backrest portion 110. Each of the racks 111R and 111L has a shape like a gear developed in a plane, and is a rod-like shape with toothed surfaces. The racks 111R and 111L are arranged on the backrest portion 110 at a certain distance from each other in the horizontal direction. More specifically, the rack 111R is arranged on the right side of the horizontal center of the backrest portion 110 (the right side as seen from the user sitting on the massage machine 10; the same applies hereinafter), and the rack 111L is arranged on the left side of the horizontal center of the backrest portion 110. Each of the racks 111R and 111L is arranged over approximately the entire vertical length of the backrest portion 110.

[0025] The racks 111R and 111L are provided with a treatment unit 130. The treatment unit 130 includes massage balls 131R, 132R, 131L, and 132L, and a drive unit 133. The treatment unit 131R is connected to the upper end of an arm 134R arranged on the front right side of the drive unit 133, and the treatment unit 132R is connected to the lower end of the arm 134R. The treatment unit 131L is connected to the upper end of an arm 134L arranged on the front left side of the drive unit 133, and the treatment unit 132L is connected to the lower end of the arm 134L.

[0026] The drive unit 133 includes a motor and a motor drive circuit (not shown), and can move the treatment applicators 131R, 132R, 131L, and 132L using the motor. Specifically, the motor operates each of the arms 134R and 134L so that the angle changes in a predetermined pattern. This causes the treatment applicators 131R, 132R, 131L, and 132L to move along a predetermined trajectory. The treatment applicators 131R and 132R are disposed to the right of the center of the backrest 110 in the left-right direction, and the treatment applicators 131L and 132L are disposed to the left of the center of the backrest 110 in the left-right direction. This allows the treatment applicators 131R and 132R to come into contact with the right side of the spine of the user's back and apply contact stimulation to that area. The treatment applicators 131L and 132L come into contact with the left side of the spine of the user's back and apply contact stimulation to that area.

[0027] FIG. 2 is a partially enlarged side cross-sectional view showing an example of the configuration of a massage machine according to an embodiment. The drive unit 133 can move up and down along the racks 111R, 111L. Specifically, the drive unit 133 includes a motor (not shown) for vertical movement. The motor is connected to a gearbox 136 including a pinion gear that meshes with the racks 111R, 111L. The pinion gear rotates around a central axis extending in the left-right direction. As the pinion gear is rotated by the motor, the drive unit 133 moves up and down along the racks 111R, 111L. The direction of movement of the drive unit 133 (up or down) is determined by the direction of rotation of the motor.

[0028] The gear box 136 is disposed below the drive unit 133. A roller 135 is disposed above the drive unit 133. The roller 135 is rotatable around a central axis extending in the left-right direction.

[0029] The backrest 110 is provided with a first guide rail 116A and a second guide rail 116B that extend in the up-down direction. The first guide rail 116A and the second guide rail 116B are arranged parallel to each other with a certain distance between them. The first guide rail 116A and the second guide rail 116B are arranged outward in the left-right direction from the racks 111R and 111L. That is, the first set (the right set) of first guide rail 116A and second guide rail 116B is arranged to the right of the rack 111R. The second set (the left set) of first guide rail 116A and second guide rail 116B is arranged to the left of the rack 111L. In Figure 2, only the first set of first guide rails 116A and second guide rails 116B are shown, but the second set of first guide rails 116A and second guide rails 116B are arranged in a position that is symmetrical to the first set of first guide rails 116A and second guide rails 116B with respect to the center plane of the backrest portion 110 (a plane that includes the center line of the backrest portion 110 and has a straight line extending in the left-right direction as its normal line).

[0030] The first guide rail 116A is disposed on the rear side (back surface side), and the second guide rail 116B is disposed on the front side (front surface side). A gap is provided between the first guide rail 116A and the second guide rail 116B, and a roller 135 is disposed in the gap. When the treatment unit 130 moves in the up-down direction, the roller 135 moves along the first guide rail 116A (or the second guide rail 116B) in the gap between the first guide rail 116A and the second guide rail 116B. The roller 135 rolls on the front surface (front face) of the first guide rail 116A. The front surface of the first guide rail 116A is a first rolling path along which the roller 135 rolls.

[0031] When the treatment unit 130 moves up and down, the pinion gears rotate on the racks 111R, 111L. Because the pinion gears are rotatable by the drive unit 133, the treatment unit 130 can swing back and forth around the pinion gears unless its movement in the front and rear directions is restricted by a portion other than the pinion gears. However, the rollers 135 are sandwiched between the first guide rail 116A and the second guide rail 116B, so their movement in the front and rear directions is restricted. Therefore, the treatment unit 130 moves up and down on the back support unit 110 while maintaining its posture (the angle of the treatment unit 130 relative to the racks 111R, 111L).

[0032] The lower end of the headrest portion 120 is connected to the upper end of the backrest portion 110 so as to be rotatable about a central axis extending in the left-right direction. This allows the headrest portion 120 to swing in the front-rear direction relative to the backrest portion 110.

[0033] Fig. 3 is a second perspective view showing an example of the configuration of the massage machine according to the embodiment. Fig. 3 shows the posture of the massage machine 10 according to the embodiment when the headrest portion 120 is tilted forward.

[0034] 3, the treatment unit 130 can move until it protrudes upward from the backrest 110. At this time, the lower side of the treatment unit 130 is supported by the backrest 110, and the upper side of the treatment unit 130 is supported by the headrest 120. In the range where the upper side of the treatment unit 130 is supported by the headrest 120, the treatment unit 130 tilts forward according to the tilt angle of the headrest 120 relative to the backrest 110.

[0035] Returning to Fig. 2, a first guide rail 126A and a second guide rail 126B are arranged on the headrest portion 120. Each of the first guide rail 126A and the second guide rail 126B is a rod-shaped member that extends linearly. The first guide rail 126A and the second guide rail 126B are arranged in parallel with each other at a fixed distance apart.

[0036] The first guide rail 126A and the second guide rail 126B are disposed on both left and right sides of the headrest 120. That is, the first set (the set on the right side) of first guide rail 126A and second guide rail 126B are disposed on the right side of the headrest 120. The second set (the set on the left side) of first guide rail 126A and second guide rail 126B are disposed on the right side of the headrest 120. Although only the first guide rail 126A and second guide rail 126B of the first set are shown in FIG. 2, the first guide rail 126A and second guide rail 126B of the second set are disposed in positions symmetrical to the first guide rail 126A and second guide rail 126B of the first set about the center plane of the headrest portion 120 (which is the same as the center plane of the backrest portion 110).

[0037] The position of the first guide rail 126A is aligned with the position of the first guide rail 116A, and the position of the second guide rail 126B is aligned with the position of the second guide rail 116B. In other words, the first guide rail 126A is disposed above the first guide rail 116A, and the second guide rail 126B is disposed above the second guide rail 116B.

[0038] The first guide rail 126A is disposed on the rear side (back surface side), and the second guide rail 126B is disposed on the front side (front surface side). A gap is provided between the first guide rail 126A and the second guide rail 126B, and the rollers 135 can move through this gap. When the treatment unit 130 moves up and down while riding on the headrest unit 120, the rollers 135 move along the first guide rail 126A (or the second guide rail 126B) in the gap between the first guide rail 126A and the second guide rail 126B. The rollers 135 roll on the front surface (front face) of the first guide rail 126A. The front surface of the first guide rail 126A is a second rolling path along which the rollers 135 roll.

[0039] When the headrest portion 120 is arranged linearly with respect to the backrest portion 110 (i.e., the inclination angle of the headrest portion 120 with respect to the backrest portion 110 is zero), the first guide rail 126A and the second guide rail 126B are arranged linearly with the first guide rail 116A and the second guide rail 116B, respectively. More specifically, when the headrest portion 120 is arranged linearly with respect to the backrest portion 110, the first guide rail 116A and the first guide rail 126A are arranged linearly without any step, and the second guide rail 116B and the second guide rail 126B are arranged linearly without any step.

[0040] 4A and 4B are partially enlarged side cross-sectional views of the backrest and headrest. Fig. 4A shows the positional relationship between first guide rail 116A and second guide rail 116B, first guide rail 126A and second guide rail 126B, and roller 135 when headrest 120 is arranged linearly with respect to backrest 110, while Fig. 4B shows the positional relationship between first guide rail 116A and second guide rail 116B, first guide rail 126A and second guide rail 126B, and roller 135 when headrest 120 is arranged at an angle with respect to backrest 110.

[0041] 4A, when the headrest portion 120 is arranged linearly relative to the backrest portion 110, the first rolling surface 117A, which is the front surface of the first guide rail 116A, and the second rolling surface 127A, which is the front surface of the first guide rail 126A, are aligned linearly without any step. Therefore, when the treatment unit 130 moves upward on the backrest portion 110 and rides up on the headrest portion 120, the roller 135 moves from the first rolling surface 117A to the second rolling surface 127A. Because the angle between the first rolling surface 117A and the second rolling surface is zero, the angle of the treatment unit 130 relative to the backrest portion 110 does not change before and after the treatment unit 130 rides up on the headrest portion 120.

[0042] 4B , when the headrest portion 120 is inclined relative to the backrest portion 110, the first rolling surface 117A of the first guide rail 116A and the second rolling surface 127A of the first guide rail 126A are inclined relative to each other at an angle corresponding to the inclination angle of the headrest portion 120 relative to the backrest portion 110. That is, the inclination angle of the headrest portion 120 relative to the backrest portion 110 and the inclination angle of the second rolling surface relative to the first rolling surface are the same. When the treatment unit 130 moves upward on the backrest portion 110 and rides onto the headrest portion 120, the rollers 135 move from the first rolling surface 117A to the second rolling surface 127A. Because the first rolling surface 117A and the second rolling surface are inclined relative to each other, the rollers 135 are positioned further forward after the treatment unit 130 rides onto the headrest portion 120 than before it rides onto the headrest portion 120. At this time, the pinion gear of the backrest 110 remains engaged with the racks 111R, 111L, so the treatment unit 130 swings forward with the center of the pinion gear as a fulcrum. Therefore, the angle of the treatment unit 130 relative to the backrest 100 changes depending on the inclination angle of the headrest 120 relative to the backrest 110.

[0043] [3. 1st holding part] Referring to Fig. 1, a first holding part 300 is fixed to the backrest part 100. Fig. 5 is a third perspective view showing an example of the configuration of the massage machine according to the embodiment, and Fig. 6 is a rear view thereof. Fig. 5 shows a perspective view of the massage machine 10 as seen from the left rear.

[0044] The first holding portion 300 extends forward from the rear surface of the backrest 100 on the left and right sides of the backrest 100. More specifically, it includes a pair of left and right tip portions 310R, 310L and a connecting portion 320 that connects the pair of tip portions 310R, 310L on the rear surface of the backrest 100. The pair of tip portions 310R, 310L are disposed forward of both the left and right sides of the backrest 100. The pair of tip portions 310R, 310L and the connecting portion 320 form the first holding portion 300 in a U-shape in a plan view.

[0045] Each of the tip portions 310R, 310L is a flat plate having an oval shape or a rectangular shape with rounded corners. The vertical height of the pair of tip portions 310R, 310L is greater than the vertical height of the connecting portion 320. In other words, the tip portions 310R, 310L are larger in the vertical direction than the connecting portion 320.

[0046] Two first airbags 400R, 400L are held on the opposing surfaces of the pair of tip portions 310R, 310L. The first airbag 400R is attached to the right tip portion 310R, and the first airbag 400L is attached to the left tip portion 310L. However, the number of first airbags 400R (400L) held by one tip portion 310R (310L) is not limited to one, and may be two or more.

[0047] First air tubes 410R, 410L extend from the first airbags 400R, 400L, respectively. The first air tubes 410R, 410L enter the backrest 110 from the tip ends 310R, 310L via the connecting portion 320. The right first air tube 410R extends downward along the right edge of the backrest 110 and bends to the left at the lower end of the backrest 110. The left first air tube 410L extends downward along the left edge of the backrest 110 and bends to the left at the lower end of the backrest 110. The first air tubes 410R, 410L are connected at the center of the lower end of the backrest 110 to form a single first air tube 410 that extends to the seat 200.

[0048] Air supplied from a pump (described later) flows through the first air tubes 410, 410R, 410L. As a result, air is supplied from the pump to the first airbags 400R, 400L. The stored air is also discharged from the first airbags 400R, 400L. As a result, the first airbags 400R, 400L expand and contract. The first airbags 400R, 400L come into contact with the shoulders and arms of the user. As the first airbags 400R, 400L repeatedly expand and contract, pressure stimuli are repeatedly applied to the shoulders and arms of the user.

[0049] The first holding unit 300 has a structure in which a metal frame is housed in a synthetic resin case. This makes the first holding unit 300 a rigid body with high rigidity. Therefore, the first holding unit 300 can efficiently hold the first airbags 400R, 400L, which generate a repulsive force when the treatment is applied to the recipient's shoulders and arms. In other words, because the displacement or deformation of the first holding unit 300 is suppressed, the displacement of the first airbags 400R, 400L caused by the repulsive force when the first airbags 400R, 400L press against the recipient's shoulders and arms is suppressed, and pressure stimulation can be efficiently applied to the recipient's shoulders and arms.

[0050] Furthermore, the first holding portion 300 provides the following significant operational effect when the user uses the massage machine 10. That is, in conventional massage machines, when the treatment unit is positioned on the user's shoulders and the treatment elements (massage balls) massage the shoulders, an upward force, i.e., a reaction force from the shoulders, acts on the treatment elements, which results in the entire backrest of the massage machine floating upward, making it difficult to perform a normal massage. However, with the massage machine 10 according to this embodiment, the first airbags 400R, 400L held by the first holding portion 300 press the user's shoulders and arms inward from the sides, so that the user's body is sandwiched between the two first airbags 400R, 400L from both the left and right sides, and the position of the backrest 100 relative to the user can be reliably maintained. As a result, the backrest 100 is prevented from rising up when the treatment section 130 is massaging the shoulders of the person to be treated, and an appropriate massage can be performed.

[0051] [4.Second holding part] Returning to Fig. 1, a pair of second retaining portions 500R, 500L extend upward from both the left and right sides of the seat portion 200. The second retaining portion 500R rises upward from the right end of the seat portion 200, and the second retaining portion 500L rises upward from the left bridge of the seat portion 200. Each of the second retaining portions 500R, 500L is a flat plate-like member that is oval or rectangular with rounded corners.

[0052] Two second airbags 600R, 600L are held on the opposing surfaces of the pair of second holding portions 500R, 500L. The second airbag 600R is attached to the right second holding portion 500R, and the second airbag 600L is attached to the left second holding portion 500L. However, the number of second airbags 600R (600L) held by one second holding portion 500R (500L) is not limited to one, and may be two or more.

[0053] Second air tubes 610R, 610L extend from the second airbags 600R, 600L, respectively (not shown in FIG. 1). Each of the second air tubes 610R, 610L enters the seat portion 200.

[0054] Air supplied from a pump (described later) flows through the second air tubes 610R, 610L. As a result, air is supplied from the pump to the second airbags 600R, 600L. The stored air is also discharged from the second airbags 600R, 600L. As a result, the second airbags 600R, 600L expand and contract. The second airbags 600R, 600L come into contact with the user's lower back and legs (thighs). As the second airbags 600R, 600L repeatedly expand and contract, pressure stimuli are repeatedly applied to the user's lower back and legs.

[0055] The second holding units 500R, 500L have a structure in which a metal frame is housed in a synthetic resin case. This makes the second holding units 500R, 500L rigid and highly rigid. Furthermore, each of the second holding units 500R, 500L is firmly fixed to the seat 200 with a metal connecting part. Therefore, the second holding units 500R, 500L can efficiently hold the second airbags 600R, 600L, which generate a repulsive force when the treatment is administered to the user's lower back and legs. In other words, because the displacement or deformation of the second holding units 500R, 500L is suppressed, the displacement of the second airbags 600R, 600L caused by the repulsive force when the second airbags 600R, 600L press against the user's lower back and legs is suppressed, allowing for efficient application of pressure stimulation to the user's lower back and legs.

[0056] [5. Seat] The seat portion 200 is configured in a generally flat plate shape. The seat portion 200 is mainly made of synthetic resin and has high rigidity so that it will not break even if an average adult male sits on it.

[0057] 1, a third airbag 700 is disposed on the upper surface of the seat portion 200. However, the number of third airbags 700 held by the seat portion 200 is not limited to one, and may be two or more.

[0058] An air tube 710 (not shown in FIG. 1) extends from the third airbag 700. The air tube 710 extends from the upper surface to the bottom surface of the seat portion 200.

[0059] Air supplied from a pump (described later) flows through the air tube 710. As a result, air is supplied from the pump to the third airbag 700. The stored air is also discharged from the third airbag 700. As a result, the third airbag 700 expands and contracts. The third airbag 700 comes into contact with the buttocks of the user. As the third airbag 700 repeatedly expands and contracts, pressure stimulation is repeatedly applied to the buttocks of the user.

[0060] 7 is a bottom view showing an example of the configuration of the massage machine (seat) according to the embodiment. As shown in FIG. 7, a pump 810 and a switching valve 820 are arranged in the seat 200.

[0061] The switching valve 820 includes, for example, five ports (an input port, a first output port, a second output port, a first exhaust port, and a second exhaust port). The first output port of the switching valve 820 is connected to the first air tube 410.

[0062] The second air tubes 610R, 610L are connected inside the seat 200 to form a single second air tube 610. The second air tube 610 is connected to a second output port of the switching valve 820.

[0063] An air tube 710 is connected to the second air tube 610 midway.

[0064] A third air tube 830 is connected to the input port of the switching valve 820. The third air tube 830 is connected to the pump 810.

[0065] Air supplied from pump 810 flows through third air tube 830 to switching valve 820. Switching valve 820 can switch its internal connection state between a first state in which the input port and first output port are connected, and a second state in which the input port and second output port are connected.

[0066] When the switching valve 820 is set to the first state, air supplied from the pump 810 is supplied from the first output port to the first airbags 400R and 400L through the first air tubes 410, 410R and 410L.

[0067] When the switching valve 820 is set to the second state, air supplied from the pump 810 is supplied from the second output port through the second air tubes 610, 610R, 610L to the second airbags 600R, 600L, and also through the second air tube 610 and the air tube 710 to the third airbag 700.

[0068] In the second state of the switching valve 820, the first output port and the first exhaust port are connected, and therefore the air contained in the first airbags 400R, 400L is discharged.

[0069] When the switching valve 820 is switched back to the first state, air supplied from the pump 810 is supplied from the first output port through the first air tubes 410, 410R, 410L to the first airbags 400R, 400L.

[0070] In the first state of the switching valve 820, the second output port and the second exhaust port are connected, so that the air contained in the second airbags 600R, 600L and the third airbag 700 is discharged.

[0071] Fig. 8 is a diagram for explaining an example of installation of the massage machine according to the embodiment, showing a perspective view of the massage machine as seen from the front.

[0072] As described above, the backrest 100 is covered by the cover 100C, and the seat 200 is covered by the cover 200C. The covers 100C and 200C are connected by a connecting sheet 100S. The connecting sheet 100S is made of a flexible material such as cloth. The connecting sheet 100S is bag-shaped with both ends open. A first connecting portion 101S, which is one end of the connecting sheet 100S, is connected to the center in the left-right direction at the lower end of the back surface of the cover 100C. A second connecting portion 102S, which is the other end of the connecting sheet 100S, is connected to the center in the left-right direction at the back surface of the cover 200C.

[0073] As described above, the connecting sheet 100S is bag-shaped with both ends open, and the first air tubes 410 extend from the seat portion 200 to the backrest portion 100 through the inside of the connecting sheet 100S. This allows the first air tubes 410 to be protected by the connecting sheet 100S. Furthermore, the first air tubes 410 are not exposed, which is preferable in terms of appearance.

[0074] As described above, the massage machine 10 can be installed on a chair. For example, the massage machine 10 can also be installed on a dedicated stand. In the example of FIG. 8, the massage machine 10 can be installed on a stand 900.

[0075] The base 900 has legs 910. The base 900 is made entirely of steel pipes. That is, the legs 910 are made of curved steel pipes. For example, the legs 910 have a shape such that the front and rear ends of a rectangular steel pipe frame arranged on a plane are bent downward. A fixing part 920 is arranged at the bent portion of the rear end of the leg 910. The fixing part 920 is a rectangular steel pipe frame that extends upward from the rear end of the leg 910.

[0076] An insertion part 103C is provided on the back surface of the cover 100C. The insertion part 103C is bag-shaped with an open bottom end, and has a width slightly larger than the width (length in the left-right direction) of the fixing part 920. As shown by the arrow in the figure, the fixing part 920 can be inserted into the insertion part 103C. By placing the massage machine 10 on the stand 900 with the fixing part 920 inserted into the insertion part 103C, the massage machine 10 can be stably held on the stand 900.

[0077] The fixed part 920 is connected to an extendable cylinder (hydraulic cylinder or air cylinder) (not shown), and is configured so that the fixed part 920 can be tilted backward by applying force to the fixed part 920, and further, the angle can be fixed in the tilted state. Therefore, the backrest part 100 connected to the fixed part 920 via the insertion part 103C can be tilted (reclined) relative to the seat part 200.

[0078] [6. Modifications] The configuration of the massage machine according to the above-described embodiment is an example and is not limited to this. For example, the pump 810 and the switching valve 820 are arranged in the seat 200, but this is not limiting. The pump 810 and the switching valve 820 may be arranged in the backrest 100. Furthermore, the pump 810 may be arranged in the seat 200 and the switching valve 820 in the backrest 100, or the pump 810 may be arranged in the backrest 100 and the switching valve 820 in the seat 200.

[0079] In the above embodiment, the first airbags 400R, 400L and the second airbags 600R, 600L (and the third airbag 700) are driven by one pump 810, but this is not limiting. The first airbags 400R, 400L, the second airbags 600R, 600L, and the third airbag 700 may each be driven by a plurality of pumps. For example, the first airbags 400R, 400L may be driven by a first pump, and the second airbags 600R, 600L may be driven by a second pump. Furthermore, the third airbag 700 may be driven by a third pump. In another example, the third airbag 700 may be driven together with the second airbags 600R, 600L by the second pump, or the third airbag 700 may be driven together with the first airbags 400R, 400L by the first pump.

[0080] [7. Supplementary Notes] The embodiments disclosed herein are illustrative in all respects and are not restrictive. The scope of the present invention is defined by the claims rather than the above-described embodiments, and includes meanings equivalent to the claims and all modifications within the scope thereof. [Explanation of symbols]

[0081] 10 Massage Machine 100 Backrest 100C cover 100S Connecting Sheet 101S 1st connection part 102S Second connection part 103C Insertion section 110 Backrest 111R, 111L rack 116A First guide rail 116B Second guide rail 117A 1st raceway 120 Headrest 126A First guide rail 126B Second guide rail 127A 2nd raceway 130 Treatment Department 131R,132R,131L,132L Treatment child 133 Drive unit 134R, 134L arms 136 Gearbox 135 Laura 200 seat 200C cover 300 1st holding part 310R,310L tip 320 Connection part 400R, 400L 1st airbag 410, 410R, 410L First air tube 500R,500L 2nd holding part 600R, 600L Second airbag 610, 610R, 610L Second air tube 700 3rd airbag 710 Air Tube 810 Pump 820 Switching valve 830 3rd air tube 900 units 910 Legs 920 Fixed part

Claims

1. a backrest portion that can be arranged on at least the backrest surface of a chair; a first holding portion extending forward from the rear surface of the backrest portion on both the left and right sides of the backrest portion; At least two first airbags are held by the first holding portion on opposing surfaces of a pair of tip portions disposed forward of the left and right sides of the backrest, respectively; a seat portion that can be placed on at least the seat surface of the chair; a pair of second holding portions extending upward from both left and right sides of the seat portion; At least two second airbags are held by opposing surfaces of the pair of second holding portions, respectively; a pump that supplies air to at least one of the first airbag and the second airbag; Equipped with The pump is disposed in either the backrest or the seat. Massage machine.

2. the first holding portion includes the pair of tip portions and a connecting portion that connects the pair of tip portions to a back surface of the backrest, The vertical height of the pair of tip portions is greater than the vertical height of the connecting portion. The massage machine according to claim 1.

3. The first holding portion is configured to have a U-shape in a plan view by the pair of tip portions and the connecting portion. The massage machine according to claim 2.

4. a first air tube connected to the first airbag and configured to deliver air supplied from the pump to the first airbag; a second air tube connected to the second air bag and configured to deliver air supplied from the pump to the second air bag; a flexible connecting sheet that connects the backrest portion and the seat portion; Furthermore, the pump is disposed in the seat; The connecting sheet is configured in a bag shape with a first connecting portion connected to the backrest portion being open and a second connecting portion connected to the seat portion being open, The first air tube extends from the backrest portion to the seat portion through the bag-shaped connecting sheet. The massage machine according to claim 1.

5. a switching valve connected to each of the first air tube and the second air tube; a third air tube connected to the pump and the switching valve; Furthermore, the switching valve is configured to switch an air flow path among the first air tube, the second air tube, and the third air tube; The switching valve is disposed in the seat portion. The massage machine according to claim 4.

6. a rack disposed on the backrest and extending in the vertical direction; A treatment unit that is movable in the up and down direction along the rack and contacts the back of the person to be treated; Furthermore, The backrest portion includes a backrest portion that contacts the back of the user, and a headrest portion that is arranged above the backrest portion and can be tilted relative to the backrest portion, When the headrest portion is inclined with respect to the backrest portion, the angle of the treatment unit with respect to the rack changes while the treatment unit moves from the backrest portion to the headrest portion along the rack and while the treatment unit moves from the headrest portion to the backrest portion along the rack. The massage machine according to claim 1.

7. The rack is disposed on the backrest portion, The treatment unit includes a roller, The backrest portion includes a first rolling path along which the roller rolls, the headrest portion includes a second rolling path along which the roller rolls, When the backrest portion and the headrest portion are linearly arranged, the first rolling path and the second rolling path are linearly arranged, When the headrest portion is inclined with respect to the backrest portion, the first rolling path and the second rolling path are inclined with respect to each other at an angle corresponding to the inclination angle of the headrest portion with respect to the backrest portion. The massage machine according to claim 6.

8. The seat can be mounted on a stand having legs. The massage machine according to any one of claims 1 to 7.

9. the base includes a fixing portion extending upward from one end of the leg; The backrest portion includes an insertion portion into which the fixing portion is inserted. The massage machine according to claim 8.

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