Massage device

Abstract

To provide a massage device that can actively massage the prostate gland. [Solution] The massage device 10 comprises a first housing 21 on which a drive unit (31) is provided, a second housing 22 rotatably mounted on the first housing 21 about a first rotation axis 61, a third housing 23 rotatably mounted on the second housing 22 about a second rotation axis 42, a first link member 62 that moves the second housing 22 relative to the first housing 21 by receiving a driving force from the drive unit (31), and a second link member 63 that moves the third housing 23 relative to the second housing 22 as a result of the movement of the second housing 22.

Description

Technical Field

[0001] The present disclosure relates to a massage device.

Background Art

[0002] Conventionally, a massage device capable of massaging the prostate has been known (see Patent Document 1). This massage device is configured such that an insertion part can be inserted into the anus, and the insertion part can be tilted or erected so as to bend with respect to the base part. As the insertion part is inserted into the anus, the angle of the insertion part with respect to the base part changes according to the shape inside the anus, making it easier to insert into the anus. Then, this massage device can stimulate and massage the prostate by pushing the inserted anus from the inside.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, since the above massage device is only capable of changing the angle of the insertion part with respect to the base part, there is room for improvement from the perspective of actively massaging the prostate.

[0005] The present disclosure has been made in view of the above circumstances, and an object thereof is to provide a massage device capable of actively massaging the prostate.

Means for Solving the Problems

[0006] The massage device of this disclosure is characterized by comprising: a first housing provided with a drive unit; a second housing rotatably mounted to the first housing about a first rotation axis; a third housing rotatably mounted to the second housing about a second rotation axis; a first link member that moves the second housing relative to the first housing by receiving a driving force from the drive unit; and a second link member that moves the third housing relative to the second housing by the movement of the second housing. [Effects of the Invention]

[0007] The massage device of this disclosure can actively massage the prostate gland. [Brief explanation of the drawing]

[0008] [Figure 1] This is a perspective view showing a massage device according to Embodiment 1 of the present disclosure. [Figure 2] Figure 1 shows a cross-sectional view of the massage device obtained along line II, which is a cross-sectional view of the massage body of the massage device. [Figure 3] This is a perspective view showing the massage unit with one side of each housing removed. [Figure 4] This is an explanatory diagram showing one side of the drive housing of the power control unit of a massage device removed. [Figure 5] This is an explanatory diagram showing the initial position of the massage unit in its extended state. [Figure 6] This is an explanatory diagram showing the curved position of the massager body in a bent state. [Modes for carrying out the invention]

[0009] The embodiments of the massage device according to this disclosure will be described below with reference to Figures 1 to 6. In Figures 3, 5, and 6, the electrical wires, air supply pipes, and cover members are omitted to facilitate understanding of the configuration and operation of the massage main body. [Embodiment 1]

[0010] The massage device 10 massages by inserting its insertion part into an orifice of the human body and then driving it to press and stimulate the orifice from the inside, and is considered suitable for inserting into the anus to massage the prostate gland. In the following description, in the massage body 11 of the massage device 10, the direction in which the first housing 21, which will be described later, extends is defined as the front-rear direction (Z in the drawing), and one of the two orthogonal directions along the plane perpendicular to the front-rear direction is defined as the up-down direction (Y in the drawing), and the other as the width direction (X in the drawing). In the front-rear direction, the end 21a side of the first housing 21 to which the second housing 22 is attached is defined as the front side and is defined as the positive direction Z in the drawing. In the up-down direction, the side on which the third housing 23 is located is defined as the upper side and is defined as the positive direction Y in the drawing.

[0011] As shown in Figure 1, the massage device 10 comprises a massage body 11 and a power control unit 12. The massage body 11 is designed to be inserted into an opening in the human body for massage, and the inserted area can be operated. The power control unit 12 supplies driving force to the massage body 11, and the power supply can be turned on or off. The massage body 11 and the power control unit 12 are connected via a tubular cable 13. This cable 13 houses an air supply pipe 87, which is the passage for air from an air pump 83 (described later), and an electric wire 86, which is the passage for electricity from a rechargeable battery 82 (see Figure 2).

[0012] As shown in Figures 1 to 3, the massage main unit 11 has a first housing 21, a second housing 22, and a third housing 23. In the massage main unit 11, one end 21a of the first housing 21 is attached to the other end 22b of the second housing 22, and one end 22a of the second housing 22 is attached to the other end 23b of the third housing 23. Therefore, in the massage main unit 11, the second housing 22 and the third housing 23 are arranged in series from one end 21a of the first housing 21 upwards in the vertical direction.

[0013] The first housing 21 is elongated in the front-to-back direction and is constructed by fitting together a pair of first housing pieces 24 in the width direction. In this first housing 21, a projection 25 is provided at one end 21a on the front side in the front-to-back direction. The projection 25 protrudes upward in the vertical direction from the end 21a and is provided with a mounting arm 26 and a bearing hole 27. The mounting arm 26 protrudes upward from the protruding end of the projection 25 and toward the rear in the front-to-back direction, and a first mounting hole 28 is provided at its tip. The bearing hole 27 is provided near the base of the mounting arm 26 and is capable of rotatably receiving the first rotating shaft 61, which will be described later.

[0014] In the first housing 21, an inlet pipe 29 is provided at the other end 21b, and an air cylinder 31 is housed inside. The inlet pipe 29 is a tubular member that passes through the outside and inside of the first housing 21. This inlet pipe 29 has an inlet section 29a, a first branch section 29b, and a second branch section 29c. The inlet section 29a is located on the outside of the first housing 21 and, as shown in Figure 2, allows the air supply pipe 87 from the air pump 83 (described later) and the electric wire 86 from the rechargeable battery 82 to pass through. The first branch section 29b and the second branch section 29c are connected to the inlet section 29a. The first branch section 29b and the second branch section 29c are located on the inside of the first housing 21 and branch out from the inlet section 29a into two. The first branch section 29b is through which the air supply pipe 87 from the air pump 83 passes, and the second branch section 29c is through which the wire 86 from the rechargeable battery 82 passes. The wire 86 passes through the first housing 21, then through the second housing 22, and then through the third housing 23, in a position that does not interfere with the operation of the first housing 21, the second housing 22, and the third housing 23.

[0015] The air cylinder 31 is located near the center of the first housing 21. The air cylinder 31 is configured such that a piston portion 33 is movable within a cylindrical portion 32, and an output shaft portion 34 is provided on the piston portion 33. An air supply pipe 87 is connected to the rear side of the cylindrical portion 32 in the front-rear direction of the air cylinder 31, allowing for the introduction and discharge of air through the air supply pipe 87. When air is introduced into the cylindrical portion 32 of the air cylinder 31, the piston portion 33 moves to the front side in the front-rear direction (see arrow A1 in Figure 5), and when air is discharged from the cylindrical portion 32, the piston portion 33 moves to the rear side in the front-rear direction (see arrow A1 in Figure 6).

[0016] The output shaft portion 34 is rod-shaped and protrudes forward from the piston portion 33 in the front-rear direction, with a mounting portion 35 provided at its protruding end. As shown in Figures 2 and 3, this mounting portion 35 is cylindrical and surrounds the piston portion 33, and is fixed to the piston portion 33, with elongated shaft holes 36 (see Figure 6) provided on both sides in the width direction. Therefore, the air cylinder 31 can reciprocate the mounting portion 35 (and its shaft holes 36) in the front-rear direction together with the piston portion 33 by introducing and discharging air from the air supply pipe 87.

[0017] The second housing 22 is elongated in the vertical direction and is formed by fitting together second housing pieces 41 that are paired in the width direction. The second housing 22 has a diameter dimension that allows it to be inserted into the anus of a human body of a common size. In the second housing 22, a second rotating shaft 42 is provided at one upper end 22a in the vertical direction. The second rotating shaft 42 is provided on the rear side in the front-rear direction at the one end 22a and has a columnar shape extending in the width direction. Further, in the second housing 22, a bearing hole 43 is provided at the other end 22b on the lower side in the vertical direction. The bearing hole 43 is capable of rotatably receiving a first rotating shaft 61, which will be described later. Furthermore, in the second housing 22, a curved groove 44 is provided inside. The curved groove 44 is provided at an intermediate position in the vertical direction of the second housing 22 and can fit a displacement shaft portion 73, which will be described later, that passes through a first mounting hole 28 of a mounting arm portion 26 of the first housing 21. The curved groove 44 is curved in an arc shape centered on the bearing hole 43, that is, the first rotating shaft 61, and can move the fitted displacement shaft portion 73 so as to draw an arc centered on the bearing hole 43 (the first rotating shaft 61).

[0018] Furthermore, in the second housing 22, a fixing portion 45 is provided inside. The fixing portion 45 is provided above an intermediate position in the vertical direction in the second housing 22 and is a location where a second housing mounting portion 66 of a first link member 62, which will be described later, is fixed. The fixing portion 45 of the first embodiment is provided with two protrusions 45a arranged along the upper side of the curved groove 44. The fixing portion 45 fixes the second housing mounting portion 66 by inserting each protrusion 45a into a fixing hole 66a of the second housing mounting portion 66.

[0019] The third housing 23 is elongated in the vertical direction and is formed by fitting together third housing pieces 51 that are paired in the width direction. The third housing 23 has a diameter dimension that allows it to be inserted into the anus of a human body of a common size. In the third housing 23, a bearing hole 52 and a mounting protrusion 53 are provided at the other end 23b on the lower side in the vertical direction. The bearing hole 52 is located on the rear side in the front-rear direction relative to the mounting protrusion 53 and can rotatably receive the second rotating shaft 42 of the second housing 22. The mounting protrusion 53 has a columnar shape extending in the width direction.

[0020] Further, in the third housing 23, a motor 54 is accommodated inside. The motor 54 has an output shaft 54a that protrudes upward in the vertical direction, and when electricity is supplied and driven, the output shaft 54a is rotated. A vibration portion 55 is provided on the output shaft 54a. The vibration portion 55 has a cylindrical shape and is attached to the output shaft 54a in a state eccentric from its central axis. Therefore, when the motor 54 is driven and rotated together with the output shaft 54a, the vibration portion 55 can generate vibration by producing vibration corresponding to the amount of eccentricity. Thus, the motor 54 and the vibration portion 55 function as a vibration portion that generates vibration in the third housing 23. An electric wire 86 that is passed through the second branch portion 29c of the introduction pipe 29 and led into the third housing 23 through the first housing 21 and the second housing 22 is connected to the motor 54. For this reason, the motor 54 can be supplied with electricity from the rechargeable battery 82 according to the operation of a power supply operation unit 12 described later, and the third housing 23 can be vibrated.

[0021] The first housing 21 and the second housing 22 are connected by passing a first rotating shaft 61 through a bearing hole 27 of the first housing 21 and a bearing hole 43 of the second housing 22. Thereby, the first housing 21 and the second housing 22 can be relatively rotated about the first rotating shaft 61. Also, the second housing 22 and the third housing 23 are connected by passing a second rotating shaft 42 of the second housing 22 through a bearing hole 52 of the third housing 23. Thereby, the second housing 22 and the third housing 23 can be relatively rotated about the second rotating shaft 42.

[0022] A first link member 62 is provided between the first housing 21 and the second housing 22, and a second link member 63 is provided between the second housing 22 and the third housing 23. The first link member 62 has a plate-shaped link body portion 64 that extends vertically from inside the first housing 21 to inside the second housing 22, a drive mounting portion 65 provided at its lower end, and a second housing mounting portion 66 provided at the upper end of the link body portion 64. A rotary bearing 67 is provided at an intermediate position in the vertical direction of the link body portion 64. This rotary bearing 67 is designed to allow the first rotating shaft 61 to pass through it. Therefore, the link body portion 64 is capable of rotating around the rotary bearing 67, i.e., the first rotating shaft 61, relative to the first housing 21.

[0023] The drive mounting portion 65 is the part that is attached to the mounting portion 35 of the air cylinder 31. As shown in Figure 3, the drive mounting portion 65 of Embodiment 1 has a pair of branched portions 65a that are branched so as to sandwich the mounting portion 35 in the width direction. A mounting shaft portion 65b is attached to each of these branched portions 65a. Each of these mounting shaft portions 65b is passed through the elongated shaft hole 36 (see Figure 6) of the mounting portion 35, thereby allowing it to be displaced vertically relative to the mounting portion 35.

[0024] As shown in Figures 2 and 3, the second housing mounting portion 66 is plate-shaped and extends in the front-rear direction, and is rotatably attached to the upper end of the link body portion 64 via a rotating shaft portion 68. Therefore, the second housing mounting portion 66 can rotate relative to the link body portion 64 about the rotating shaft portion 68, and the angle with respect to the link body portion 64 can be changed. The second housing mounting portion 66 is provided with two fixing holes 66a arranged side by side in the front-rear direction. These two fixing holes 66a are provided corresponding to two protrusions 45a of the fixing portion 45 of the second housing 22, and each is capable of receiving the corresponding protrusion 45a. The second housing mounting portion 66 can be fixed to the fixing portion 45 in a state where relative rotation is prevented by inserting the protrusions 45a corresponding to each fixing hole 66a.

[0025] The second link member 63 is plate-shaped and extends vertically from inside the second housing 22 to inside the third housing 23. The second link member 63 has a displacement bearing hole 71 at its lower end and a projection receiving hole 72 at its upper end. The displacement bearing hole 71 is capable of rotatably receiving the displacement shaft portion 73. This displacement shaft portion 73 can be inserted into the first mounting hole 28 of the mounting arm portion 26 of the first housing 21. The displacement shaft portion 73 can be attached to the mounting arm portion 26 and the second link member 63 by passing it through the first mounting hole 28 and the displacement bearing hole 71. With them attached, the displacement shaft portion 73 can be fitted into the curved groove 44 of the second housing 22 and is capable of displacing along the curved groove 44. The projection receiving hole 72 is rotatably attached to the mounting projection 53 of the third housing 23.

[0026] In the power control unit 12, as shown in Figure 4, a rechargeable battery 82 and an air pump 83 are housed in a drive source housing 81, and as shown in Figure 1, a switch unit 84 is provided on the drive source housing 81. The drive source housing 81 has a long shape and is constructed by fitting together a pair of drive source housing pieces 85. As shown in Figure 4, the rechargeable battery 82 enables the supply of electricity to the air pump 83 and the motor 54 in the third housing 23. Although not shown, the rechargeable battery 82 is provided with a connector terminal with an exposed socket on the outside of the drive source housing 81, and can be charged via this connector terminal. Furthermore, although not shown, the rechargeable battery 82 is connected to the air pump 83 via a wire connected to the air pump 83 via a switch unit 84, and can drive the air pump 83. In addition, although not shown, a wire 86 is connected to the rechargeable battery 82 via a switch unit 84. This electric wire 86 runs from the drive source housing 81 into the cable 13 and, as described above, is connected to the motor 54 in the third housing 23 through the first housing 21 and the second housing 22.

[0027] The air pump 83 enables the supply of air to the air cylinder 31 inside the first housing 21. An air supply pipe 87 is connected to this air pump 83. The air pump 83 is driven by electricity supplied from the rechargeable battery 82, which allows it to discharge air from the air supply pipe 87 and draw air in from the air supply pipe 87. This air supply pipe 87 is routed from the drive source housing 81 into the cable 13 and is connected to the air cylinder 31 inside the first housing 21 as described above.

[0028] As shown in Figure 1, the switch unit 84 has an operating piece 84a that is exposed from the drive source housing 81. This operating piece 84a is displaceable relative to the drive source housing 81. By displacing the operating piece 84a, the switch unit 84 can change the electrical connection relationship. The switch unit 84 of Embodiment 1 is capable of switching between connecting the rechargeable battery 82 to the air pump 83, connecting the rechargeable battery 82 to the motor 54, connecting the rechargeable battery 82 to the air pump 83 and the motor 54, and disconnecting the connection from the rechargeable battery 82 to the air pump 83 and the motor 54. Furthermore, when the rechargeable battery 82 and the air pump 83 are connected, the switch unit 84 is capable of selecting between a mode in which air is repeatedly discharged and drawn in from the air pump 83, and a mode in which air is discharged from the air pump 83 and the system stops.

[0029] As described above, the massage main body 11 is configured such that the first housing 21 and the second housing 22 are rotatable relative to each other about a first rotation axis 61, and the second housing 22 and the third housing 23 are rotatable relative to each other about a second rotation axis 42, and are connected to each other. The massage main body 11 is provided with a first link member 62 through the first housing 21 and the second housing 22 as described above, and a second link member 63 through the second housing 22 and the third housing 23 as described above.

[0030] As shown in Figures 1 and 2, the massage body 11, when assembled as described above, is entirely covered by a cover member 88. This cover member 88 is made of a material that is highly flexible and pleasant to the touch, such as a thermoplastic elastomer or soft urethane foam. The cover member 88 adheres closely to the first housing 21, the second housing 22, and the third housing 23, without hindering their relative movements. As a result, the entire massage body 11 can be washed with water or the like.

[0031] Next, the operation of the massage device 10 will be described. In this massage device 10, the drive mounting portion 65 of the first link member 62 is attached to the mounting portion 35 of the piston portion 33 of the air cylinder 31 in the massage main body 11, so that displacement is possible by driving the air cylinder 31. In addition, the massage main body 11 houses a motor 54 in the third housing 23. The air cylinder 31 and the motor 54 can be driven as needed by operating the switch portion 84 of the power operation unit 12. As shown in Figure 5, the initial position Pi of the massage main body 11 is the position where the second housing 22 and the third housing 23 extend upward in the vertical direction from one end 21a of the first housing 21. The massage device 10 can be moved to a curved position Pc (see Figure 6) by operating the switch portion 84 of the power operation unit 12 to drive the air pump 83. The details are as follows.

[0032] First, the air pump 83 is driven in the initial position Pi to discharge air. This air is sent to the air cylinder 31 through the air supply pipe 87, and as shown in Figure 5, its piston portion 33 is moved forward in the front-rear direction (arrow A1). As a result, the mounting portion 35 provided on the piston portion 33 is also moved forward, and the drive mounting portion 65 of the first link member 62 is also moved forward. As a result, the first link member 62 is rotated around the first rotation axis 61 (arrow A2), and the second housing mounting portion 66 is displaced in a direction that approaches the other end 21b of the first housing 21 (arrow A3).

[0033] In this case, the drive mounting portion 65 is displaced in the rotational direction around the first rotation axis 61, while the mounting portion 35 is displaced in the front-rear direction along the piston portion 33. However, since the mounting portion 35 and the drive mounting portion 65 are attached by passing their respective mounting shaft portions 65b through the elongated shaft hole 36 in the vertical direction, the difference in their displacement directions can be absorbed. Furthermore, since the drive mounting portion 65 is attached to the mounting portion 35 by sandwiching it in the width direction with a pair of branch portions 65a (see Figure 3), the driving force of the mounting portion 35 can be transmitted to the first link member 62 in a balanced manner in the width direction, and the displacement of the first link member 62 can be made smooth. Here, in order to transmit the driving force of the mounting portion 35 to the first link member 62 in a balanced manner in the width direction, it is also conceivable that the drive mounting portion 65 be attached to the mounting portion 35 at the tip side of the piston portion 33. However, if the drive mounting section 65 is attached to the mounting section 35 at the tip end, it would increase the size in the front-to-back direction of the configuration for transmitting the driving force of the air cylinder 31 to the first link member 62, resulting in an increase in the overall size of the first housing 21, i.e., the massage body 11. Therefore, by using the above configuration, the drive mounting section 65 can be made smaller while still transmitting the driving force of the mounting section 35 to the first link member 62 in a balanced manner in the width direction.

[0034] The second housing mounting portion 66 is fixed to the fixing portion 45 of the second housing 22, so when it is displaced in the direction approaching the other end 21b as described above (arrow A3), it displaces the second housing 22 in the direction approaching the other end 21b of the first housing 21 in the rotational direction around the first rotation axis 61 (arrow A4). Here, the first housing 21 is provided with a mounting arm portion 26, and the displacement shaft portion 73 passes through the first mounting hole 28 of the arm portion 26. Since this mounting arm portion 26 is fixed to the first housing 21, when the second housing 22 is displaced, it is displaced relative to the second housing 22 (arrow A5). At this time, the mounting arm portion 26 is fitted into a curved groove 44 of the second housing 22 centered on the first rotation axis 61, so it moves along the curved groove 44.

[0035] The displacement shaft portion 73 moves along the curved groove 44, approaching the mounting projection 53 of the third housing 23, and moving the displacement bearing hole 71 through which it passes toward the mounting projection 53. Since the mounting projection 53 is passed through the projection receiving hole 72 of the second link member 63, it is pushed upward in the vertical direction by the second link member 63 (arrow A6). Here, the third housing 23 is rotatable about the second rotation axis 42 relative to the second housing 22. Therefore, as the mounting projection 53 is pushed upward by the second link member 63, the third housing 23 is displaced in a direction approaching the other end 21b of the first housing 21 in the rotational direction about the second rotation axis 42 (arrow A7).

[0036] As a result, the massage unit 11 is in the curved position Pc shown in Figure 6. When the air pump 83 draws in air, each part of the massage unit 11 is displaced in the opposite direction to the movement described above. This displacement to the opposite side is indicated in Figure 6 with arrows that have the same reference numerals as the movement of each part in Figure 5. As a result, the massage unit 11 is in the initial position Pi shown in Figure 5.

[0037] Thus, the massage device 10 can perform the following operations in the massage body 11: bending the second housing 22 and the third housing 23 toward the other end 21b relative to the first housing 21, and extending the second housing 22 and the third housing 23. Therefore, the massage device 10 can operate the first housing 21 as a palm and the second housing 22 and the third housing 23 like fingers in the massage body 11.

[0038] Therefore, in the massage device 10, the air cylinder 31 functions as a drive unit in the massage body 11 that moves the second housing 22 and the third housing 23 relative to the first housing 21. Here, since the massage device 10 uses the air cylinder 31 as a drive unit, if a load that would hinder the bending and straightening motion is applied to the second housing 22 or the third housing 23, the air used to operate the air cylinder 31 acts as a cushion, preventing the bending and straightening motion from being performed with excessive force.

[0039] When using the massage device 10, the user inserts the third housing 23 and the second housing 22 into their anus with the other end 21b of the first housing 21 facing forward. Thus, in the massage device 11, the third housing 23 and the second housing 22 become the insertion part, and the first housing 21 becomes the base for the insertion part. Here, by setting the massage device 11 to the initial position Pi (see Figure 5), the degree of curvature between the second housing 22 and the third housing 23 can be minimized, making insertion easier. Then, with the device inserted, the user can change from the initial position Pi to the curved position Pc (see Figure 6) by operating the switch 84 of the power operation unit 12 to drive the air pump 83. As a result, the massage device 10 can stimulate the prostate by pressing from the inside of the anus to the front, i.e., the area around the prostate, using the massage device 11.

[0040] Furthermore, by operating the switch unit 84 to repeatedly discharge and inhale air from the air pump 83, the user can repeatedly perform bending and straightening movements of the massage body 11, thereby more effectively massaging the prostate. In addition, by operating the switch unit 84 to drive the motor 54, the user can vibrate the third housing 23, and the vibration of the third housing 23 can also massage the prostate. At this time, the user can massage the prostate by maintaining the curved position Pc of the massage body 11 and pressing on the area around the prostate with vibration, or by performing bending and straightening movements in conjunction with vibration. Here, since the size and shape of the anus differ from person to person, the load applied during the bending and straightening movements of the massage body 11 will differ. However, since the massage device 10 uses an air cylinder 31 as the drive unit to operate the massage body 11, it is possible to prevent excessive force from being applied during bending and straightening movements, resulting in comfortable use.

[0041] Based on these considerations, the massage device 10 allows the second housing 22 and the third housing 23 to bend and extend relative to the first housing 21 in the massage main body 11, thereby enabling active massage of the prostate. In particular, the massage device 10 of Embodiment 1 allows the first housing 21 to act as a palm and the second housing 22 and the third housing 23 to act like fingers in the massage main body 11, thus enabling massage of the prostate in the same way as a practitioner would with their hands. In addition, the massage device 10 of Embodiment 1 allows the third housing 23 to be vibrated by the motor 54 in addition to the bending and extending motion in the massage main body 11, enabling more effective massage of the prostate.

[0042] This massage device 10 has an air pump 83 that discharges and draws air to the air cylinder 31, which acts as the drive unit, located in a power control unit 12 that is separate from the massage body 11. As a result, the massage device 10 can lighten and miniaturize the massage body 11 used for insertion into the anus, making it easier to handle during use. In particular, since the massage device 10 of Embodiment 1 uses an air-driven air cylinder 31, the massage body 11 can be made even lighter compared to using a drive unit with a different configuration. In addition, the massage device 10 of Embodiment 1 has a rechargeable battery 82 and a switch unit 84 together in the power control unit 12 in addition to the air pump 83, so the massage body 11 can be made into the minimum configuration necessary for driving, while other components related to its driving can be consolidated in the power control unit 12, improving ease of use.

[0043] The massage device 10 of Embodiment 1 can provide the following effects and benefits.

[0044] The massage device 10 comprises a first housing 21 equipped with an air cylinder 31 as a drive unit, a second housing 22 rotatably mounted to the first housing 21 around a first rotation axis 61, and a third housing 23 rotatably mounted to the second housing 22 around a second rotation axis 42. The massage device 10 also includes a first link member 62 that moves the second housing 22 relative to the first housing 21 by receiving a driving force from the air cylinder 31, and a second link member 63 that moves the third housing 23 relative to the second housing 22 as a result of the movement of the second housing 22. The massage device 10 can move the second housing 22 and the third housing 23 relative to the first housing 21 by the driving force from the air cylinder 31. As a result, by driving the massage device 10 with the second housing 22 and the third housing 23 inserted into the anus, the second housing 22 and the third housing 23 move, pressing and stimulating the area around the prostate from inside the anus, thereby actively massaging the prostate.

[0045] Furthermore, in the massage device 10, the second housing 22 is attached to one end 21a of the first housing 21, and when the second housing 22 moves toward the other end 21b of the first housing 21, the third housing 23 also moves toward the other end 21b. Therefore, the massage device 10 can use the first housing 21 as a palm and the second housing 22 and third housing 23 as fingers, allowing the prostate to be massaged in the same way as a practitioner would with their hands.

[0046] Furthermore, the massage device 10 uses an air cylinder 31 that is driven by air. This prevents the massage device 10 from bending and straightening with excessive force, ensuring a comfortable user experience.

[0047] The massage device 10 has a piston portion 33 that is driven forward and backward by an air cylinder 31. When the piston portion 33 is advanced, the first link member 62 tilts within the first housing 21, causing the second housing 22 to move relative to the first housing 21 so that it approaches the other end 21b opposite to the one end 21a of the first housing 21. The second link member 63 moves relative to the second housing 22 as the second housing 22 moves, causing the third housing 23 to move relative to the second housing 22 so that it approaches the other end 21b. Thus, the massage device 10 has a simple configuration that uses air as the driving force, and the first housing 21 can be used as a palm, while the second housing 22 and the third housing 23 can be operated like fingers.

[0048] In the massage device 10, the first link member 62 is attached to the piston portion 33 by sandwiching it between the link members. Therefore, the massage device 10 can transmit the driving force of the piston portion 33 to the first link member 62 in a balanced manner in the width direction, while maintaining a compact configuration.

[0049] The massage device 10 houses a motor 54 and a vibrating part 55, which serve as the vibrating section for generating vibrations, in the third housing 23. Therefore, in addition to the bending and straightening motion of the second housing 22 and the third housing 23, the massage device 10 can vibrate the third housing 23 with the motor 54, allowing for a more effective massage of the prostate.

[0050] Therefore, the massage device 10 of Embodiment 1 according to the present disclosure can actively massage the prostate gland.

[0051] Although the massage device of this disclosure has been described above based on Embodiment 1, the specific configuration is not limited to Embodiment 1, and changes or additions to the design are permitted as long as they do not deviate from the gist of the invention as described in each claim of the patent.

[0052] In Embodiment 1, the massage device has the overall shape and configuration described above. However, the massage device is not limited to the configuration of Embodiment 1, as long as the massage device has a second housing attached to the first housing so as to be rotatable around a first rotation axis, and a third housing attached to the second housing so as to be rotatable around a second rotation axis, and a first link member moves the second housing relative to the first housing by receiving a driving force from a drive unit, and the second link member moves the third housing relative to the second housing as a result of the movement of the second housing. The overall shape and configuration can be set as appropriate.

[0053] Furthermore, the massage device uses an air cylinder 31 as the drive unit. However, the drive unit may have any other configuration as long as it applies a driving force to the first link member to move the second and third housings relative to the first housing, and is not limited to the configuration of Embodiment 1.

[0054] Furthermore, the massage device includes a rechargeable battery 82, an air pump 83, and a switch unit 84 in the power control unit 12. However, the massage device may have the rechargeable battery 82, air pump 83, and switch unit 84 provided separately, or one to all of them may be provided in the first housing, and is not limited to the configuration of Embodiment 1.

[0055] In Embodiment 1, the massage device has a motor 54 and a vibrating part 55, which are vibrating parts that generate vibrations, located in the third housing 23. However, the vibrating parts may be located in the first housing 21 or the second housing 22, or in other configurations, or may not be located at all, and are not limited to the configuration of Embodiment 1. [Explanation of Symbols]

[0056] 10 Massage device 21 First housing 21a One end 21b Other end 22 Second housing 23 Third housing 31 Air cylinder (as an example of a drive unit) 33 Piston unit 42 Second rotating shaft 54 ​​Motor (constituting an example of a vibrating unit) 55 Vibrating part (constituting an example of a vibrating unit) 61 First rotating shaft 62 First link member 63 Second link member

Claims

1. A first housing equipped with a drive unit, A second housing is mounted to the first housing so as to be rotatable about a first rotation axis, A third housing is mounted to the second housing so as to be rotatable around a second rotation axis, A first link member that receives a driving force from the drive unit and moves the second housing relative to the first housing, A massage device comprising a second link member that moves the third housing relative to the second housing by moving the second housing.

2. The second housing is attached to one end of the first housing. The massage device according to claim 1, characterized in that when the second housing moves toward the other end of the first housing opposite to the one end, the third housing also moves toward the other end.

3. The massage device according to claim 1, characterized in that the drive unit is an air cylinder driven by air.

4. The aforementioned drive unit has a piston that moves forward and backward when driven, The first link member tilts within the first housing when the piston portion is extended, thereby moving the second housing relative to the first housing so as to approach the other end of the first housing opposite to the one end. The massage device according to claim 3, characterized in that the second link member moves relative to the second housing as the second housing moves, thereby moving the third housing relative to the second housing so that it approaches the other end.

5. The massage device according to claim 4, characterized in that the first link member is attached to the piston portion by sandwiching the piston portion.

6. The massage device according to any one of claims 1 to 5, characterized in that the third housing houses a vibrating part that generates vibrations.

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