Massage instrument

Abstract

To provide a massage instrument for effectively massaging a body.SOLUTION: A massage instrument 10 includes: a body part 11; shafts 42 extending outward from the body part 11; and rotors 12 rotatably supported by the shafts 42. The shafts 42 and the rotors 12 are respectively paired. The body part 11 includes: a grip part 17 to be gripped by a user; and an extension part 18 extended outward from the grip part 17. The pair of rotors 12 and the extension part 18 can simultaneously have contact with a treated part.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a massage device. [Background technology]

[0002] 2. Description of the Related Art Conventionally, it has been known to massage the body using a massage device such as that described in Patent Document 1 below. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Utility Model Registration No. 3130848 Summary of the Invention [Problem to be solved by the invention]

[0004] In order to improve the effect of massage, a massage device capable of effectively massaging the body has been desired.

[0005] The present invention was developed in view of the above circumstances, and an object of the present invention is to provide a massage device that can effectively massage and relax the body. [Means for solving the problem]

[0006] The massage device of the present invention has a main body, a shaft extending outward from the main body, and a rotating body supported on the shaft for free rotation, the shaft and the rotating body being provided in pairs, the main body having a gripping portion for being held by the user and an extension portion extending outward from the gripping portion, and the pair of rotating bodies and the extension portion being capable of contacting the treatment area simultaneously. Effect of the Invention

[0007] According to the present invention, by placing the extension portion against the body, the pair of rotating bodies can be easily placed against the treatment area at an appropriate angle, so that the body can be effectively massaged by the pair of rotating bodies. [Brief description of the drawings]

[0008] [Figure 1] 1 is a side view showing the massage device of the present embodiment placed on a horizontal surface. FIG. [Diagram 2] FIG. 2 is a plan view showing the massage device placed on a horizontal surface. [Diagram 3] FIG. 2 is a front view showing the massage device placed on a horizontal surface. [Figure 4] FIG. 2 is a rear view showing the massage device placed on a horizontal surface. [Diagram 5] FIG. 2 is a bottom view showing the massage device placed on a horizontal surface. [Figure 6] 3 is a cross-sectional view showing the massage device, which corresponds to the cross section taken along the line AA in FIG. 2. FIG. [Figure 7] FIG. 2 is an exploded perspective view showing the massage device. [Figure 8] FIG. 2 is a diagram showing the massage device when a plane including a rotation axis is viewed from a vertical direction. [Figure 9] 3 is a cross-sectional view showing the massage device, which corresponds to the cross section taken along the line BB in FIG. 2. FIG. [Figure 10] FIG. 11 is a diagram explaining the strength with which a pair of rotating bodies pinch and lift the treatment area, where (A) shows the massage tool moving forward, and (B) shows the massage tool moving backward. [Figure 11] The figures show how a massage device is used on various parts of the body, where (A) shows how the massage device is used on the forearm, and (B) shows how the massage device is used on the upper arm. [Figure 12]FIG. 11 is a diagram explaining how to move the massage tool, where (A) shows how the massage tool is moved in a straight line, and (B) shows how the massage tool is moved in an arc. [Figure 13] 13A to 13C are diagrams illustrating how the rotating body and protrusions contact the treatment area when the massage tool is moved in a straight line. [Figure 14] 13A and 13B are diagrams illustrating how the rotating body and protrusions contact the treatment area when the massage tool is moved in an arc. [Figure 15] FIG. 2 is a diagram illustrating the dimensions of the massage device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] A preferred embodiment of the present invention is described below. [1] The massage tool of the present invention has a main body, a shaft extending outward from the main body, and a rotor supported rotatably on the shaft, the shaft and the rotor are provided in pairs, the main body has a gripping portion that is held by the user, and an extension portion extending outward from the gripping portion, and the pair of rotors and the extension portion can contact the treatment area simultaneously. With this configuration, by applying the extension portion to the body, the pair of rotors can be easily applied to the treatment area at an appropriate angle, so that the body can be effectively massaged by the pair of rotors. [2] The massage device described in [1] above may be such that, in a side view seen from the direction in which the pair of rotating bodies are arranged, an angle formed by a plane tangent to three points of the pair of rotating bodies and the extension portion and the rotation axis of the rotating bodies is greater than 0 degrees and less than 100 degrees. With this configuration, by applying the extension portion to the body, the pair of rotating bodies can be easily applied to the treatment area at an appropriate angle, so that the body can be effectively massaged by the pair of rotating bodies. [3] In the massage tool according to the above [1] or [2], the extension portion may have a front surface portion, a rear surface portion, and an extension surface portion. With this configuration, the strength of the extension portion can be increased by having the front surface portion and the rear surface portion. [4] In the massage tool according to any one of [1] to [3] above, the extension part may have a connecting part connected to the grip part, a hole formed in the connecting part, and a shaft part provided on the grip part may be inserted into the hole. With this configuration, the extension part is firmly connected to the grip part, making it easier to apply force to the extension part. [5] In the massage device according to any one of [1] to [4] above, the extension part may have an extension surface part extending in a direction substantially perpendicular to the direction in which the pair of rotating bodies are arranged, and the extension surface part may be provided with a protrusion for pressing the body protruding outward. With this configuration, the treatment area picked up and spread apart by the pair of rotating bodies can be pressed by the protrusion for pressing the body, so that the body can be effectively massaged. [6] In the massage device described in [5] above, the protrusions may be provided in multiple numbers. With this configuration, the treatment area can be pressed by multiple protrusions, so that the body can be effectively massaged. [7] In the massage device described in [6] above, the plurality of protrusions may be of different sizes. With this configuration, the different sized protrusions can change the way the treatment area is pressed, allowing the body to be effectively massaged. [8] In the massage tool described in [7] above, the plurality of protrusions may be provided at the rear of the pair of rotating bodies, and may be arranged from the front to the rear in order of size. With this configuration, the massage tool can be moved forward or backward to perform treatment using the pair of rotating bodies and treatment using the plurality of protrusions in succession.

[0010] <Example> An embodiment of the present invention will be described in detail below with reference to Figs. 1 to 15. The massage device 10 in this embodiment is used mainly for massaging the body. As shown in Figs. 1 and 2, the massage device 10 includes a main body 11, a pair of rotors 12, a gussa 13, and protrusions (large protrusions 14 and small protrusions 15) for pressing the body.

[0011] In the following description, the upper side of each component when the pair of rotors 12 and the large projections 14 are simultaneously placed against the horizontal surface H will be referred to as the upper side, the lower side as the lower side, the rotor 12 side as the front side, the side opposite the rotor 12 as the rear side, and the right side and left side as viewed from the rear side to the front while standing vertically against the horizontal surface H will be referred to as the right side and the left side as the left side. In each drawing, the positive side of the X-axis is the front side, the negative side of the X-axis is the rear side, the positive side of the Y-axis is the upper side, the negative side of the Y-axis is the lower side, the positive side of the Z-axis is the right side, and the negative side of the Z-axis is the left side. The state in which the pair of rotors 12 and the large projections 14 are simultaneously placed against the horizontal surface H will be referred to as the placed state.

[0012] 1 and 3, the main body 11 includes a bifurcated portion 16, a grip portion 17, and an extension portion 18. The bifurcated portion 16 is provided at the front end of the main body 11. The grip portion 17 is provided rearward of the bifurcated portion 16. The grip portion 17 has a cylindrical shape extending in the front-rear direction.

[0013] The upper surface of the gripping portion 17 is inclined upward from the front to the rear in the placed state. At least a part of the gripping portion 17 is located on the horizontal plane H side of the extension of the rotation axis R of the rotor 12 in a side view of the massage tool 10 seen from the left and right (see FIG. 15). With this configuration, the arm holding the gripping portion 17 can be twisted significantly or the user can change grip to press against the skin while alternating between pinching up and spreading, thereby realizing the massage tool 10 that is easy to operate.

[0014] The vertical dimension of the grip 17 gradually decreases from the front to the rear. The lower part of the grip 17 has a number of recesses 19. The recesses 19 are formed continuously in the front-to-rear direction. Each recess 19 is recessed in an arc shape that easily fits the user's fingers. There are five recesses 19, so the grip can be held from the front or rear, and the amount of force applied can be changed depending on the way it is held.

[0015] The left-right dimension of grip portion 17 gradually decreases from the front side to the rear side as shown in Fig. 2. The outer peripheral surface of grip portion 17 is curved all around in the YZ cross section.

[0016] 6, the grip portion 17 has a shaft-shaped portion 21 and a cylindrical portion 22. The shaft-shaped portion 21 is a part of a core part 23 described later. The shaft-shaped portion 21 is inserted into a through hole 24 formed in the cylindrical portion 22. The through hole 24 penetrates the cylindrical portion 22 in the front-rear direction.

[0017] A bolt 26 is embedded in the shaft portion 21. The bolt 26 is made of a metal such as iron. The bolt 26 extends linearly rearward from the vicinity of the bifurcated portion 16. The rear end of the bolt 26 protrudes rearward from the rear end of the grip portion 17.

[0018] The cylindrical portion 22 is made of synthetic resin such as ABS resin. The surface of the cylindrical portion 22 may be covered with a covering portion. The covering portion may be made of an elastic material such as rubber or a thermoplastic elastomer. For example, a polyester (TPC) may be used as the thermoplastic elastomer.

[0019] 1, the extension portion 18 extends downward from the grip portion 17. The extension portion 18 is formed of a synthetic resin such as ABS resin or aluminum die-casting (aluminum alloy such as ADC12). The extension portion 18 has a front surface portion 27, a rear surface portion 28, and an extension surface portion 29.

[0020] The front surface 27 extends downward from a position in front of the gripping portion 17. The front surface 27 is inclined rearward from the upper end to the lower end. The rear surface 28 extends downward from a position rearward of the gripping portion 17. The rear surface 28 is inclined at the same angle as the front surface 27. The extension surface 29 extends from the lower end of the front surface 27 to the lower end of the rear surface 28. The extension surface 29 has a gentle curved shape. In the placed state, the rear end of the extension surface 29 is located higher than the front end of the extension surface 29. A space 31 into which a hand can be inserted is formed between the extension portion 18 and the gripping portion 17. By inserting a hand into the space 31 and gripping the gripping portion 17, it is easy to apply force when massaging the rotating body 12 and the body pressing protrusions 14, 15, and an effective massage can be performed.

[0021] The left-right dimension of the front portion 27 gradually decreases from the top to the bottom as shown in FIG. 3. The left and right surfaces of the front portion 27 are inclined so as to approach each other from the top to the bottom. The left-right dimension of the rear portion 28 is constant in the up-down direction as shown in FIG. 4. The left-right dimension of the rear portion 28 is equal to the left-right dimension of the extending surface portion 29. The left-right dimension of the extending surface portion 29 is smaller than the left-right dimension of the grip portion 17 as shown in FIG. 5. The left-right dimension of the extending surface portion 29 is approximately constant in the front-rear direction.

[0022] As shown in Fig. 7, the extension portion 18 has a front connecting portion 32 and a rear connecting portion 33 which are connected to the grip portion 17. The front connecting portion 32 is provided at the upper end portion of the front surface 27. A hole 34 through which the shaft portion 21 of the core part 23 passes is formed in the front connecting portion 32 (see Fig. 6). The shaft portion 21 of the core part 23 passes through the hole 34 in the front connecting portion 32 and is inserted into the through hole 24 of the tubular portion 22. The front connecting portion 32 abuts against the front end surface of the grip portion 17.

[0023] The rear connecting part 33 is provided on the upper end part of the rear surface part 28. A hole 35 through which the rear end part of the bolt 26 passes is formed in the rear connecting part 33. The rear connecting part 33 abuts against the rear end surface of the grip part 17 with a ring 36 sandwiched therebetween (see FIG. 6). The rear end part of the bolt 26 is inserted into the hole 35 of the rear connecting part 33 and is fixed to the rear connecting part 33 by a flat washer 37 and a nylon nut 38. A nut cap 39 is attached to the rear surface of the rear connecting part 33. The nut cap 39 covers the nylon nut 38.

[0024] As shown in FIG. 8, the pair of rotating bodies 12 are provided at the lower end of the bifurcated portion 16. Each rotating body 12 is substantially spherical. The diameter of the rotating body 12 is 40 mm. Each rotating body 12 rotates about a rotation axis R. The opening angle α of the rotation axis R is preferably in the range of 50 degrees to 110 degrees. The opening angle α of the rotation axis R is set to 65 degrees to 80 degrees. The opening angle α of the rotation axis R is preferably 70 degrees.

[0025] 7 and 9, the support portion 41 that supports the rotating body 12 includes a shaft 42, a polyslider 43, a bearing 44, a bearing spacer 45, and an E-ring 46. A pair of support portions 41 are provided on the left and right sides.

[0026] The pair of shafts 42 are embedded in the bifurcated portion 16. The shafts 42 are made of metal. The shafts 42 extend downward from the bifurcated portion 16. In the placed state, the shafts 42 are inclined forward from the top to the bottom. The rotating body 12 is rotatably supported by the shafts 42.

[0027] The bearing 44 has a cylindrical shape. The bearing 44 is made of synthetic resin. The bearing 44 has an elastic protrusion 48 (see FIG. 7). The elastic protrusion 48 is caught on the inner surface of the rotating body 12. This fixes the bearing 44 to the inside of the rotating body 12.

[0028] The strength with which the pair of rotating bodies 12 pinch the treatment area can be adjusted by the angle at which the pair of rotating bodies 12 contact the treatment area, as shown in Fig. 10. Fig. 10(A) shows the case where the massage tool 10 is moved forward. In this case, the strength with which the pair of rotating bodies 12 pinch the treatment area is stronger when the massage tool 10 is in an upright position than when it is in a lying position. In this case, when the massage tool 10 is in a lying position, the pair of rotating bodies 12 spread the treatment area. When the massage tool 10 is in a lying position, the extension portion 18 contacts the treatment area, and the massage tool 10 is restricted from lying down too much. This prevents a situation in which it is difficult to obtain the treatment effect envisioned in the design.

[0029] The angle of the rotation axis R with respect to the skin when the pair of rotating bodies 12 are applied to the skin is 90 degrees, which is the boundary between pinching up and spreading. The action varies depending on the direction of movement of the massage tool 10, but assuming that the horizontal plane H in FIG. 15 is the skin, when the rotating body 12 comes into contact with the skin (the third imaginary contact point P3 in FIG. 15), if the angle formed by the rotation axis R and the skin on the side of the moving direction (the front side in the case of moving forward, and the rear side in the case of moving backward) is less than 90 degrees, the skin is pinched up, and if it is greater than 90 degrees, the skin is spread. However, since the skin is soft and the rotating body 12 sinks into the skin, even if the rotating body 12 is applied to the skin at an angle of 90 degrees before sinking, the angle at which the skin touches the skin after sinking changes, and the configuration may result in pinching up more than expected. For example, even if the rotating body 12 is applied to the skin before sinking at an angle of 85 degrees, the skin is pinched up when the rotating body 12 is sunk into the skin and moved forward.

[0030] FIG. 10(B) shows the case where the massage tool 10 is retracted. In this case, the force with which the pair of rotating bodies 12 pinch the treatment area is stronger when the massage tool 10 is laid down than when it is upright. In this case, when the massage tool 10 is upright, the pair of rotating bodies 12 spread the treatment area to the left and right. When the massage tool 10 is laid down, the extension portion 18 comes into contact with the treatment area, restricting the massage tool 10 from lying down too much. This makes it possible to prevent the pair of rotating bodies 12 from pinching the treatment area too strongly.

[0031] As shown in FIG. 1, the gussa 13 is provided between the forked portion 16 and the grip portion 17. The gussa 13 has a first surface portion 49, a second surface portion 51, and an edge portion 52. The first surface portion 49 faces the front side. The first surface portion 49 is continuous with the forked portion 16. The second surface portion 51 faces the rear side. The second surface portion 51 is continuous with the front connecting portion 32.

[0032] The edge portion 52 is formed by the outer edge of the first surface portion 49 and the outer edge of the second surface portion 51. When viewed from the left-right direction in the placed state, the edge portion 52 is inclined forward from the bottom to the top. The lower end of the edge portion 52 in the placed state is located higher than the upper end of the rotating body 12. The upper end of the edge portion 52 in the placed state is located higher than the upper end of the grip portion 17. The upper end of the edge portion 52 in the placed state is located higher than the upper end of the front connecting portion 32.

[0033] As shown in FIG. 1, the large protrusion 14 and the small protrusion 15 protrude downward from the main body 11. The large protrusion 14 and the small protrusion 15 are provided on the extension surface 29 of the extension portion 18. The large protrusion 14 is provided forward of the small protrusion 15. The protruding end surface 54 of the large protrusion 14 and the protruding end surface 55 of the small protrusion 15 are gently curved in the front-rear direction. The dimension of the large protrusion 14 in the front-rear direction is larger than the dimension of the small protrusion 15 in the front-rear direction. The front and rear surfaces of the large protrusion 14 are inclined toward each other toward the protruding end surface 54 of the large protrusion 14. The front surface of the large protrusion 14 is inclined at the same angle as the front surface 27 of the extension portion 18. The front and rear surfaces of the small protrusion 15 are inclined toward each other toward the protruding end surface 55 of the small protrusion 15. In the placed state, the protruding end surface 55 of the small protrusion 15 is upwardly spaced from the horizontal plane H.

[0034] 1, the length dimension 14L in the front-rear direction of the base of the large projection 14 is, for example, 40 mm. The length dimension 14L is the length dimension parallel to the horizontal plane H from the front end to the rear end of the large projection 14 in a side view seen from the left-right direction. The length dimension 14L is preferably set to be 10 mm or more and 70 mm or less. The length dimension 14L is preferably within the range of 20 mm or more and 50 mm or less.

[0035] The length dimension 54L in the front-rear direction of the protruding end surface 54 of the large projection 14 is, for example, 20 mm. The length dimension 54L is the length dimension parallel to the horizontal plane H from the front end to the rear end of the protruding end surface 54 of the large projection 14 in a side view seen from the left-right direction. The length dimension 54L is preferably set in the range of 10 mm to 40 mm. The length dimension 54L is preferably within the range of 15 mm to 30 mm.

[0036] The length dimension 15L in the front-to-rear direction of the base of the small protrusion 15 is, for example, 30 mm. The length dimension 15L is the length dimension parallel to the horizontal plane H from the front end to the rear end of the small protrusion 15 in a side view seen from the left-right direction. The length dimension 15L is preferably set to 7 mm or more and 60 mm or less. The length dimension 15L is preferably within a range of 15 mm or more and 45 mm or less.

[0037] The length dimension 55L in the front-rear direction of the protruding end surface 55 of the small protrusion 15 is, for example, 10 mm. The length dimension 55L is the length dimension parallel to the horizontal plane H from the front end to the rear end of the protruding end surface 55 of the small protrusion 15 in a side view seen from the left-right direction. The length dimension 55L is preferably set in the range of 5 mm to 30 mm. The length dimension 55L is preferably within the range of 7 mm to 30 mm.

[0038] The height dimension 14H of the large protrusion 14 is, for example, 15 mm. The height dimension 14H is the maximum protruding dimension of the large protrusion 14 in a side view from the left and right direction. The protruding dimension of the large protrusion 14 is the dimension perpendicular to the lower surface of the extension portion 18. The height dimension 14H is preferably set in the range of 7 mm to 30 mm. The height dimension 14H is preferably within the range of 10 mm to 20 mm.

[0039] The height dimension 15H of the small protrusion 15 is, for example, 10 mm. The height dimension 15H is the maximum protruding dimension of the small protrusion 15 in a side view from the left and right direction. The protruding dimension is a dimension perpendicular to the lower surface of the extension portion 18. The height dimension 15H is preferably set in the range of 5 mm to 25 mm. The height dimension 15H is preferably within the range of 7 mm to 15 mm.

[0040] 5, the left-right dimension of large protrusion 14 is larger than the left-right dimension of small protrusion 15. The area of ​​protruding end face 54 of large protrusion 14 is larger than the area of ​​protruding end face 55 of small protrusion 15. The left-right center of large protrusion 14 and the left-right center of small protrusion 15 are located on a straight line extending in the front-rear direction.

[0041] As shown in Fig. 5, the width dimension 14W of the base of the large protrusion 14 is, for example, 20 mm. The width dimension 14W is the length dimension parallel to the Z axis from the left end to the right end of the large protrusion 14 in a bottom view seen from below. The width dimension 14W is preferably set to 10 mm or more and 70 mm or less. The width dimension 14W is preferably within a range of 15 mm or more and 30 mm or less.

[0042] The width dimension 54W of the protruding end surface 54 of the large protrusion 14 is, for example, 10 mm. The width dimension 54W is the length dimension parallel to the Z axis from the left end to the right end of the protruding end surface 54 of the large protrusion 14 in a bottom view seen from below. The width dimension 54W is preferably set to 5 mm or more and 40 mm or less. The width dimension 54W is preferably within a range of 7 mm or more and 20 mm or less.

[0043] The width dimension 15W of the base of the small protrusion 15 is, for example, 15 mm. The width dimension 15W is the length dimension parallel to the Z axis from the left end to the right end of the small protrusion 15 in a bottom view seen from below. The width dimension 15W is preferably set to 7 mm or more and 60 mm or less. The width dimension 15W is preferably within a range of 10 mm or more and 25 mm or less.

[0044] The width dimension 55W of the protruding end surface 55 of the small protrusion 15 is, for example, 7 mm. The width dimension 55W is the length dimension parallel to the Z axis from the left end to the right end of the protruding end surface 54 of the large protrusion 14 in a bottom view seen from below. The width dimension 55W is preferably set to 3 mm or more and 30 mm or less. The width dimension 55W is preferably within the range of 5 mm or more and 20 mm or less.

[0045] 4, the large protrusion 14 and the small protrusion 15 are located between the pair of rotating bodies 12. The protruding end surface 54 of the large protrusion 14 and the protruding end surface 55 of the small protrusion 15 are curved in an arc shape in the left-right direction.

[0046] As shown in FIG. 7, the massage tool 10 includes a core part 23. The core part 23 has a head part 57 and an axis part 21 integrally. The head part 57 has a bifurcated part 16 and a gusset 13 integrally. The axis part 21 extends rearward from the head part 57. The core part 23 is formed by integrally molding the bifurcated part 16, the gusset 13, and the axis part 21 with the shaft 42 and the bolt 26 as insert parts. The bifurcated part 16, the gusset 13, and the axis part 21 are made of synthetic resin such as ABS resin. The axis part 21 is inserted from the front connecting part 32 to the rear connecting part 33 of the extension part 18. The rear surface of the head part 57 is in contact with the front surface of the front connecting part 32. The rear end of the axis part 21 is fixed to the rear connecting part 33 of the extension part 18. This integrates the core part 23, the grip portion 17, and the extension portion 18. The integration of the grip portion 17 and the extension portion 18 increases the strength of the main body portion 11, making it easier to apply force when the large protrusions 14 and the small protrusions 15 press against the body.

[0047] Next, the dimensions of the massage tool 10 will be described with reference to FIG. 15. A virtual plane that passes through the rear end 17P of the grip 17 and simultaneously contacts the pair of rotating bodies 12 is called a first virtual plane V1. The rear end 17P of the grip 17 is the rearmost point of the grip 17 in a side view of the massage tool 10 seen from the left and right direction. The opening angle β1 between the rotation axis R projected onto the XY plane and the first virtual plane V1 is, for example, 54 degrees. The opening angle β1 is preferably set in a range greater than 0 degrees and less than or equal to 85 degrees. The opening angle β1 is preferably in a range of 17.5 degrees or more and 65 degrees or less. It is more preferable that the opening angle β1 is in a range of 35 degrees or more and 55 degrees or less.

[0048] The point where the rotating body 12 and the first imaginary plane V1 contact each other is called the first imaginary contact point P1. The length dimension from the first imaginary contact point P1 to the rear end 17P of the grip portion 17 in a side view of the massage tool 10 seen from the left and right direction is called the first length dimension L1. The first length dimension L1 is a length dimension parallel to the first imaginary plane V1. The first length dimension L1 is, for example, 151 mm. The first length dimension L1 is preferably set in a range of 30 mm to 200 mm. When the first length dimension L1 is 30 mm, the grip portion 17 may be extended upward. The first length dimension L1 is preferably in a range of 100 mm to 180 mm. It is more preferable that the first length dimension L1 is in a range of 140 mm to 160 mm.

[0049] A virtual plane that simultaneously contacts the pair of rotating bodies 12 and the extension surface portion 29 of the extension portion 18 is referred to as a second virtual plane V2. The opening angle β2 between the rotation axis R projected onto the XY plane and the second virtual plane V2 is, for example, 68 degrees. The opening angle β2 is preferably set in a range greater than 0 degrees and less than or equal to 100 degrees. The opening angle β2 is preferably in a range of 25 degrees or more and 80 degrees or less. It is more preferable that the opening angle β2 is in a range of 50 degrees or more and 70 degrees or less.

[0050] The contact point between the rotating body 12 and the second imaginary plane V2 is called the second imaginary contact point P2. The contact point between the extension portion 18 and the second imaginary plane V2 is called the extension portion contact point 18P. The length dimension from the second imaginary contact point P2 to the extension portion contact point 18P in a side view of the massage tool 10 seen from the left and right direction is called the second length dimension L2. The second length dimension L2 is a length dimension parallel to the second imaginary plane V2. The second length dimension L2 is, for example, 116 mm. The second length dimension L2 is preferably set in a range of 40 mm to 200 mm. The second length dimension L2 is preferably in a range of 85 mm to 160 mm. It is more preferable that the second length dimension L2 is in a range of 105 mm to 125 mm.

[0051] The front end of the extension surface portion 29 in the placed state is called the extension front point 29P. The extension front point 29P is the most front point of the extension surface portion 29 in a side view of the massage tool 10 seen from the left and right direction. The extension front point 29P coincides with the front end of the large protrusion 14. The length dimension from the second imaginary contact point P2 to the extension front point 29P in a side view of the massage tool 10 seen from the left and right direction is called the third length dimension L3. The third length dimension L3 is a length dimension parallel to the second imaginary plane V2. The third length dimension L3 is, for example, 50 mm. The third length dimension L3 is preferably set in a range of 30 mm to 200 mm. The third length dimension L3 is preferably in a range of 35 mm to 115 mm. It is more preferable that the third length dimension L3 is in a range of 40 mm to 60 mm.

[0052] In a side view of the massage device 10 seen from the left and right direction, the opening angle β3 between the rotation axis R and the horizontal plane H is, for example, 75 degrees. The opening angle β3 is preferably set in a range of more than 0 degrees and not more than 110 degrees. The opening angle β3 is preferably in a range of 27.5 degrees or more and 90 degrees or less. The opening angle β3 is more preferably in a range of 55 degrees or more and 80 degrees or less.

[0053] The point where the rotating body 12 and the horizontal plane H contact is called the third imaginary contact point P3. The point where the large projection 14 and the horizontal plane H contact is called the projection bottom point 14P. The length dimension from the third imaginary contact point P3 to the projection bottom point 14P in a side view of the massage tool 10 seen from the left and right direction is called the fourth length dimension L4. The fourth length dimension L4 is a length dimension parallel to the horizontal plane H. The fourth length dimension L4 is, for example, 75 mm. The fourth length dimension L4 is preferably set in a range of 0 mm to 200 mm. When the fourth length dimension L4 is 0 mm, the large projection 14 is provided between a pair of rotating bodies 12. The fourth length dimension L4 is preferably in a range of 45 mm to 140 mm. It is more preferable that the fourth length dimension L4 is in a range of 65 mm to 85 mm.

[0054] With the above dimensions, the massage tool 10 can be easily tilted at an appropriate angle when moving forward and backward. With the above dimensions, the extension 18 and the user's hand holding the grip 17 are unlikely to get in the way when tilting the massage tool 10. With the above dimensions, the pair of rotating bodies 12 and the extension 18, or the large projection 14, can be easily applied simultaneously to a relatively narrow treatment area such as a woman's forearm.

[0055] Next, a description will be given of an example of how to use the massage device 10. By using the massage device 10, a user can effectively warm up or cool down before exercising.

[0056] Examples of how to use the massage device 10 include a method using both the rotating body 12 and the protrusions 14, 15, a method using only the rotating body 12, a method using only the protrusions 14, 15, and a method using the Gua Sha 13.

[0057] The method of using both the rotor 12 and the protrusions 14, 15 is suitable for massaging the forearm, upper arm, thigh, etc., as shown in Figures 11 and 12. The massage tool 10 may be held by placing the thumb and index finger on the front side of the grip portion 17 as shown in Figure 11(A), or may be held by placing the thumb and index finger on the rear side of the grip portion 17 as shown in Figure 11(B).

[0058] Methods of using both the rotating body 12 and the protrusions 14, 15 include a method of moving the massage tool 10 in a straight line as shown in Figure 12(A), and a method of moving the massage tool 10 in an arc as shown in Figure 12(B).

[0059] The method of moving the massage tool 10 in a straight line is to move the massage tool 10 forward in parallel with the treatment area so that the pair of rotating bodies 12, the large protrusions 14 and the small protrusions 15 are simultaneously in contact with the treatment area, as shown in Figure 13. In this state, the massage tool 10 is lying down, so the pair of rotating bodies 12 spreads the treatment area. The large protrusions 14 and the small protrusions 15 press against the treatment area immediately after spreading it. Pressing with the large protrusions 14 has an effect similar to finger pressure with the thumbs. This method is suitable for warming up before exercise.

[0060] The method of moving the massage tool 10 in an arc is to move the massage tool 10 forward in an arc from a state where only the pair of rotating bodies 12 are in contact with the body, as shown in Fig. 14. This causes a transition to a first state where only the pair of rotating bodies 12 are in contact, a second state where only the pair of rotating bodies 12 and the large protrusions 14 are in contact, and a third state where only the large protrusions 14 and the small protrusions 15 are in contact.

[0061] In the first state, the massage tool 10 is upright, so the pair of rotating bodies 12 pinch the treatment area with strong force. During the transition from the first state to the second state, the massage tool 10 reclines, and the force with which the pair of rotating bodies 12 pinch the treatment area weakens. In the second state, the treatment area is spread apart by the pair of rotating bodies 12 and pressed by the large protrusions 14. In the third state, the treatment area is further pressed by the small protrusions 15. According to this method, the treatment area is pinched up with strong force by the pair of rotating bodies 12, then spread apart, and pressed in turn by the large protrusions 14 and the small protrusions 15. This method is suitable for cooling down after exercise.

[0062] The massage tool 10 can also be used by retracting it as shown in Fig. 10(B). In this case, when the pair of rotating bodies 12, the large protrusions 14 and the small protrusions 15 are simultaneously applied to the treatment area and moved straight, the treatment area pressed by the body pressing protrusions 14, 15 can be picked up by the pair of rotating bodies 12. After pressing the large protrusions 14 and small protrusions 15, or only the large protrusion 14, against the treatment area, the pair of rotating bodies 12 can be applied to the treatment area with the massage tool 10 lying down or standing up, so that the treatment area pressed by the body pressing protrusions 14, 15 can be picked up or spread by the pair of rotating bodies 12.

[0063] In the method using only the rotating bodies 12, the pair of rotating bodies 12 is placed against the treatment area, and the massage tool 10 is moved forward and backward. At this time, the angle at which the pair of rotating bodies 12 contact the treatment area is adjusted by laying the massage tool 10 down or upright. This method is suitable for massaging the calves and lower back.

[0064] In the method using only the protrusions 14, 15, the large protrusions 14 and the small protrusions 15 are placed perpendicularly against the treatment area, and pressed against the treatment area. This method is suitable for massaging the soles of the feet and shoulders.

[0065] The method of using the Gua Sha 13 involves placing the edge 52 of the Gua Sha 13 against the treatment area, rubbing the treatment area with the edge 52 of the Gua Sha 13, and applying pressure to the treatment area. The massage tool 10 may be moved back and forth while placing one of the rotating bodies 12 together with the edge 52 of the Gua Sha 13 against the treatment area. This allows both the Gua Sha 13 and the rotating body 12 to be used for massage at the same time.

[0066] According to the embodiment configured as above, the following effects are achieved. The massage tool 10 has a main body 11, a shaft 42, and a rotating body 12. The shaft 42 extends downward from the main body 11. The rotating body 12 is rotatably supported by the shaft 42. The shaft 42 and the rotating body 12 are provided in pair. The main body 11 has a gripping portion 17 and an extending portion 18. The gripping portion 17 is held by a user. The extending portion 18 extends downward from the gripping portion 17. The pair of rotating bodies 12 and the extending portion 18 can contact the treatment area at the same time. According to this configuration, by applying the extending portion 18 to the treatment area, the pair of rotating bodies 12 can be easily applied to the treatment area at an appropriate angle, so that the body can be effectively massaged by the pair of rotating bodies 12.

[0067] The angle β2 formed by the second imaginary plane V2 tangent to three points of the pair of rotating bodies 12 and the extension portion 18 and the rotation axis R of the rotating body 12 is greater than 0 degrees and equal to or less than 100 degrees. With this configuration, by applying the extension portion 18 to the treatment area, the pair of rotating bodies 12 can be easily applied to the treatment area at an appropriate angle, so that the body can be effectively massaged by the pair of rotating bodies 12.

[0068] The extending portion 18 has a front surface portion 27, a rear surface portion 28, and an extending surface portion 29. According to this configuration, by having the front surface portion 27 and the rear surface portion 28, the strength of the extending portion 18 can be increased.

[0069] The extension portion 18 has a front connecting portion 32 that is connected to the grip portion 17. A hole 34 is formed in the front connecting portion 32. The shaft portion 21 provided on the grip portion 17 is inserted into the hole 34. According to this configuration, the extension portion 18 is firmly connected to the grip portion 17, making it easier to apply force to the extension portion 18.

[0070] The extending surface portion 29 extends in the front-rear direction. The extending surface portion 29 is provided with downwardly protruding body pressing protrusions 14, 15. With this configuration, the treatment area that is pinched up and spread apart by the pair of rotating bodies 12 can be pressed by the body pressing protrusions 14, 15, so that the body can be effectively massaged.

[0071] The massage device 10 is provided with two protrusions 14, 15. According to this configuration, the treatment area can be pressed by the two protrusions 14, 15, so that the body can be effectively massaged.

[0072] The two protrusions 14, 15 are different in size. With this configuration, the two protrusions 14, 15 of different sizes can change the way the treatment area is pressed, so that the body can be effectively massaged.

[0073] The two protrusions 14, 15 are provided at the rear of the pair of rotating bodies 12. The two protrusions 14, 15 are arranged from the front to the rear in order of size. With this configuration, treatment by the pair of rotating bodies 12 and treatment by the two protrusions 14, 15 can be performed consecutively.

[0074] <Other Examples> The present invention is not limited to the embodiments described above and illustrated in the drawings, and the following embodiments are also included within the technical scope of the present invention. (1) In the above embodiment, the extension portion 18 has a front surface 27, a rear surface 28, and an extension surface 29. However, the extension portion may only have a portion extending downward from the grip portion. The portion may have an extension length sufficient to make it easy to apply the rotating body to the treatment site at an appropriate angle. (2) In the above embodiment, the extension 18 is provided with the projections 14, 15. However, the present invention is not limited to this, and the extension does not necessarily have to be provided with projections. (3) In the above embodiment, two protrusions for pressing the body are provided, but the present invention is not limited to this, and only one protrusion for pressing the body may be provided, or three or more protrusions may be provided. (4) In the above embodiment, the projections for pressing the body include the large projection 14 and the small projection 15. However, the present invention is not limited to this, and a plurality of projections of the same size may be provided as the projections for pressing the body. (5) In the above embodiment, an example of use of the massage device 10 has been described. However, the massage device 10 may be used for various purposes. For example, the massage device 10 may be used for beauty purposes. (6) In the above embodiment, the massage device 10 has a Guasha 13. However, the present invention is not limited to this, and the massage device does not have to have a Guasha. (7) In the above embodiment, the front and rear surfaces of the large projection 14 are inclined in a direction approaching each other toward the protruding end surface 54 of the large projection 14. This is not limited to this, and the projection may protrude with the same thickness from the base to the protruding end surface. (8) In the above embodiment, numerical values ​​related to the dimensions of the massage tool 10 are exemplified. However, the present invention is not limited to this, and the configuration of the present invention can also be applied to a small massage tool. In this case, the diameter of the rotating body may be about 15 mm, the length of the grip part may be 110 mm, the second length dimension L2 may be 20 mm, and the fourth length dimension L4 may be 15 mm. The angles may be the same as those in the above embodiment. The numerical values ​​of the second length dimension L2 and the fourth length dimension L4 are not limited to the ranges described in the specification, and can be changed as appropriate depending on the diameter of the rotating body and the length of the grip part. (9) In the above embodiment, a space 31 into which a hand can be inserted is formed between the extension 18 and the grip 17. This is not limiting, and there may be no space between the extension and the grip, and the grip itself may function as an extension and guide. (10) Regarding the shape of the rotating body in the above embodiment, the aforementioned "approximately spherical" includes a perfect sphere and a shape that is a distortion of a perfect sphere to an extent that is generally recognized as a sphere, such as a spheroid or teardrop shape. The rotating body may have a surface composed of smoothly curved surfaces, and may be a polyhedron having a surface composed of a large number of triangles, quadrangles, etc. When the rotating body is a polyhedron, the surface of the rotating body can be prevented from slipping against the skin, compared to a rotating body having a surface composed of smoothly curved surfaces, and a better beauty effect can be expected. (11) The shape of the main body in the above embodiment is not limited to a long shape, and may be substantially spherical. In this case, the gripping portion refers to the entire portion that can be gripped, and at least a part of the gripping portion may be located closer to the ground surface than the rotation axis angle (imaginary line) of the rotor in a side view when the rotor and the protrusion are grounded at three points. [Explanation of symbols]

[0075] 10. Massage equipment 11...Main body 12...Rotating body 14...Large protrusion 15…Small protrusion 17...Gripping part 18...Extending part 21...Axial part 29...Extending surface part 32…Front connection part 34...hole 42…Shaft

Claims

1. A main body portion, a shaft extending outwardly from the body; A rotor rotatably supported by the shaft, The shaft and the rotor are provided in pair, The main body portion includes a grip portion that is gripped by a user and an extension portion that extends outward from the grip portion, The pair of rotating bodies and the extension portion are capable of contacting the treatment area simultaneously.

2. The massage device of claim 1, wherein, when viewed from the side in the direction in which the pair of rotating bodies are aligned, the angle formed by a plane tangent to the pair of rotating bodies and three points of the extension portion and the rotation axis of the rotating bodies is greater than 0 degrees and less than 100 degrees.

3. The massage device according to claim 1 or 2, wherein the extension portion has a front surface portion, a rear surface portion, and an extension surface portion.

4. The extension portion has a connecting portion that is connected to the grip portion, A hole is formed in the connecting portion, The massage tool according to claim 1 or 2, wherein a shaft portion of the grip portion is inserted into the hole.

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