WO2017146543A1

WO2017146543A1 - Roller massage device having improved roller coupling structure

Info

Publication number: WO2017146543A1
Application number: PCT/KR2017/002127
Authority: WO
Inventors: 박연훈
Original assignee: 주식회사 아이젤크리에이티브
Priority date: 2016-02-26
Filing date: 2017-02-27
Publication date: 2017-08-31
Also published as: KR20170100862A

Abstract

The present invention relates to a roller massage device having an improved roller coupling structure, more specifically to a roller massage device, which is provided with one pair of rotating shafts on one side of a massage handle and a massage roller rotatably coupled to the pair of rotating shafts, having: a protruding part on the inner circumferential surface of the massage roller; a first rolling bearing and second rolling bearing installed on either side of the protruding part; and a rotating shaft inserted into the first and second rolling bearings and the protruding part and the end of the rotating shaft coupled with a screw, thereby fixing the inner rings of the first and second rolling bearings due to the strong pressure applied by the screw, and simultaneously bringing the outer rings of the first and second rolling bearings into close contact with both sides of the protruding part of the massage roller so as to cause the outer rings of the first and second rolling bearings to rotate along with the massage roller, causing same to rotate smoothly without shaking.

Description

Roller massager with improved coupling structure

The present invention relates to a roller massager having an improved coupling structure of a roller, and more particularly, a pair of rotating shafts are formed on one side of a massage handle, and a roller massaging machine is rotatably coupled to the pair of rotating shafts. Protruding parts are formed on the inner circumference of the massage roller, and first rolling bearings and second rolling bearings are installed on both sides of the protruding parts, respectively, and the rotary shafts are fitted to the first and second rolling bearings and the protrusions to couple screws to the ends of the rotating shafts. As a result, the screw strongly presses and fixes the inner rings of the first and second rolling bearings, while the outer rings of the first and second rolling bearings are brought into close contact with both sides of the protrusions of the massage rollers and rotated together with the massage rollers. The present invention relates to a roller massager having an improved engagement structure of a roller which is smoothly rotated without shaking.

As the skin ages, the skin loses its elasticity as it ages, causing sagging, wrinkles, and long-term exposure to UV rays, resulting in thickening of the dead skin cells, resulting in loss of clarity, deteriorating skin metabolism, and hydration and nutrients. Supply is not smooth.

Skin aging is caused by the above causes. As a means for preventing skin aging, functional substances such as nourishing creams that provide nutrition to the skin are applied to the skin, or the skin is stimulated to give metabolism. Massage to keep the skin elastic by activating.

The massage (Massage) is a method of treating by giving a suitable stimulation to the skin or muscles, the purpose of promoting the flow of body fluids, such as blood, lymph, tissue fluids to promote local metabolism.

However, in the related art, since a human's hand is mainly used for a massage, a mass may come to the hand node or the muscle of the masseuse, and it is difficult to continuously maintain a constant force for a long time.

Therefore, a massage tool manufactured in a specific form is widely used to maintain a uniform force during massage and to prevent the user's hands from accumulating fatigue.

Such a massage tool is composed of a knob having a cylindrical shape and a roller axially coupled to the end of the handle for easy use by the user. When using the massage tool, the roller is in close contact with a portion for massage. By moving back and forth, the roller rotates to give a physical stimulus to the skin.

As shown in FIG. 1 as a conventional massage tool as described above, Korean Patent Publication No. 10-2013-0091622 discloses a ball massage beauty machine, wherein the conventional beauty machine has a pair of shafts 1 formed at an end of a handle. The cylindrical bearing member 2 is fitted to the outer circumference of the shaft 1, and the bearing member 2 is coupled to the massage ball 3 inside the elastic member at the outer circumference of the bearing member 2. By forming the locking claw 2a and protruding the stepped portion 3a at the inner circumference of the massage ball 3, the stepped portion 3a of the massage ball 3 is locked by the bearing member 2. The massage ball (3) is rotatably coupled without moving away from the outer circumference of the bearing member (2).

However, the conventional beauty machine has a space formed between the outer periphery of the bearing member 2 and the inner periphery of the massage ball 3, and the groove 2b formed on the outer periphery of the bearing member 2 is a massage ball ( Since the massage ball 3 is rotated because the structure is simply inserted or seated in the stepped portion 3a of 3), there is a problem of shaking from the rotating shaft of the bearing member 2.

In addition, the conventional beauty machine has a structure in which the inner circumference of the massage ball 3 comes into contact with the outer circumference of the bearing member 2, which is fixed, and thus rotates between the outer circumference of the bearing member and the inner circumference of the massage ball 3. This causes the problem that the massage ball 3 is not easily rotated and noise is generated.

The present invention has been made to solve the above problems, a pair of rotating shaft is formed on one side of the massage handle, the massage roller is rotatably coupled to the pair of rotating shaft, the massage roller in the The screw is formed by forming a protrusion at the periphery, and installing a first rolling bearing and a second rolling bearing on both sides of the protrusion, respectively, and fitting a screw to the end of the rotating shaft by inserting a rotating shaft to the first and second rolling bearings and the protrusion. While firmly pressing and fixing the inner ring of the first and second rolling bearings, the outer ring of the first and second rolling bearings is in close contact with both sides of the protruding part of the massage roller, so that the massage roller rotates together with the massage roller. An object of the present invention is to provide an improved roller massager.

In addition, in the coupling structure of the massage roller and the rotating shaft of the roller massager, by installing a rolling bearing consisting of an inner ring, an outer ring and a rolling ball instead of a sliding bearing between the massage roller and the rotating shaft. The inner ring is fixed to the rotating shaft, and the outer ring is coupled to the massage roller, thereby reducing friction between the inner and outer circumferences of the massage roller, thereby naturally rotating the massage roller and simultaneously between the massage roller and the rotating shaft. An object of the present invention is to provide a roller massager having an improved coupling structure of a roller that can reduce noise.

The present invention is a massage handle (10);

A pair of rotating shafts 20 formed at one end of the massage handle 10;

A pair of massage rollers 30 respectively coupled to the pair of rotation shafts 20 and having protrusions 32 formed on an inner circumference thereof;

First and

second rolling bearings

40 and 50 fitted to the rotating shaft 20 and installed on both sides of the protrusion 32 of the massage roller 30;

Screw 60 is coupled to the end of the rotating shaft 20 and

Consists of the pressure step (70) formed between the massage handle 10 and the rotating shaft 20,

The first and

second rolling bearings

40 and 50 include first and second

inner rings

42 and 52, first and second

outer rings

44 and 54, and first and second

rolling balls

46 and 56. under,

The first inner ring 42 of the first rolling bearing 40 is pressed by the screw 60 and the second inner ring 52 of the second rolling bearing 50 is pressed by the pressing step 70 to rotate the shaft. It is fixed to (20), the first and second outer ring (44, 54) is pressed by the screw 60 is in close contact with the protrusion 32 of the massage roller 30 is rotated together with the massage roller 30 Provided is a roller massager having an improved coupling structure of a roller.

In addition, the roller cap 80 is further coupled to one end of the massage roller 30.

In addition, the massage roller 30 may be formed of a metal or synthetic resin material.

In addition, the massage roller 30 may be plated to absorb the heat of the skin to lower the skin temperature.

In addition, the massage roller 30 may be formed of a sphere having an outer diameter of 18mm to 32mm.

In addition, the massage roller 30 may be formed of an ellipsoid having a difference between the first distance l1 and the second distance l2 of 1.5 mm to 7 mm.

In addition, the screw 60 is composed of a pressing portion 62 for pressing the first rolling bearing 40 and a coupling portion 64 coupled to the rotating shaft 20, the pressing portion 62 of the screw 60. The diameter t1 is smaller than the inner diameter t2 of the first outer ring 44 of the first rolling bearing 40.

In addition, the angle α1 between the pair of massage rollers 30 may be 111 ° to 150 °, and the inclination angle α2 of the massage roller 30 may be 20 ° to 50 °.

In the roller massager having an improved coupling structure of the roller according to the present invention, a pair of rotary shafts are formed on one side of the massage handle, and the roller massager is rotatably coupled to the pair of rotary shafts. By forming a protrusion in the projection, the first rolling bearing and the second rolling bearing are respectively provided on both sides of the projection, and the first and second rolling bearing and the projection by engaging the screw to the rotary shaft end by inserting the screw, the screw The inner ring of the first and second rolling bearings is strongly pressed to fix the outer ring of the first and second rolling bearings so that the outer rings of the first and second rolling bearings are in close contact with both sides of the protrusions of the massage rollers so that they rotate together with the massage rollers. It works.

In addition, the roller massager having an improved coupling structure of the roller according to the present invention, in the coupling structure of the massage roller and the rotating shaft of the roller massager, the inner ring and the outer ring in place of the sliding bearing (sliding bearing) between the massage roller and the rotating shaft; By installing a rolling bearing consisting of a rolling ball (rolling bearing) to configure the inner ring to be fixed to the rotating shaft, the outer ring is configured to be coupled to the massage roller, thereby reducing the friction between the inner and outer circumference of the massage roller, Accordingly, the massage roller is naturally rotated, and at the same time, the noise between the massage roller and the rotating shaft is reduced.

1 is a conventional beauty machine.

Figure 2 is a perspective view of the roller massager improved the coupling structure of the roller according to the present invention.

Figure 3 is an exploded perspective view of the roller massager improved the coupling structure of the roller according to the present invention.

Figure 4 is a plan view of the roller massager improved the coupling structure of the roller according to the present invention.

Figure 5 is a side view of the roller massager improved the coupling structure of the roller according to the present invention.

Figure 6 is a cross-sectional view of the roller massager improved the coupling structure of the roller according to the present invention.

Figure 7 is a perspective view showing the assembly of the massage roller and the rolling bearing on the rotating shaft of the roller massager improved the coupling structure of the roller according to the present invention.

Figure 8 is a perspective view showing the appearance of massaging the skin with a roller massager with an improved coupling structure of the roller according to the present invention.

Referring to the accompanying drawings, an embodiment of a roller massager with improved coupling structure of the roller according to the present invention will be described.

Figure 2 is a perspective view of a roller massager improved the coupling structure of the roller according to the invention, Figure 3 is an exploded perspective view of a roller massager improved the coupling structure of the roller according to the invention, Figure 4 is a roller 5 is a plan view of a roller massager having an improved coupling structure, and FIG. 5 is a side view of a roller massager having an improved coupling structure of a roller according to the present invention, and FIG. 6 is a cross-sectional view of a roller massager having an improved coupling structure of a roller according to the present invention. FIG. 7 is a perspective view illustrating the assembly of a massage roller and a rolling bearing on a rotating shaft of a roller massager having an improved coupling structure of a roller according to the present invention, and FIG. 8 is a roller massager having an improved coupling structure of a roller according to the present invention. This is a perspective view showing the appearance of massaging the skin.

Roller massager with improved coupling structure of the roller according to the present invention and the massage handle (10); A pair of rotating shafts 20 formed at one end of the massage handle 10; A pair of massage rollers 30 respectively coupled to the pair of rotation shafts 20 and having protrusions 32 formed on an inner circumference thereof; First and second

rolling bearings

40 and 50 fitted to the rotating shaft 20 and installed on both sides of the protrusion 32 of the massage roller 30; Screw 60 is coupled to the end of the rotating shaft 20 and the pressure step (70) formed between the massage handle 10 and the rotating shaft 20,

The first and

second rolling bearings

40 and 50 include first and second

inner rings

42 and 52, first and second

outer rings

44 and 54, and first and second

rolling balls

46 and 56. The first inner ring 42 of the first rolling bearing 40 is pressed by the screw 60 and the second inner ring 52 of the second rolling bearing 50 is pressed against the pressing step 70. And the first and second

outer rings

44 and 54 are pressed by the screw 60 to be in close contact with the protrusion 32 of the massage roller 30 together with the massage roller 30. It is characterized by being rotated.

The massage handle 10 is a cylindrical shape having a smooth curved surface as a portion that the user grabs during the massage.

A pair of rotating shafts 20 are formed at one end of the massage handle 10, and the rotating shafts 20 serve as shafts when the massage rollers 30 are inserted to rotate the massage rollers 30.

The pair of rotating shafts 20 are formed at a predetermined angle to the left and right with respect to the central axis of the massage handle 10.

One end of the rotating shaft 20 is formed with a screw coupling groove 22 to which the screw 60 is coupled.

Between the massage handle 10 and the rotating shaft 20, the pressing step 70 is in close contact with the second inner ring 52 of the second rolling bearing 50 is formed.

The massage roller 30 is in the form of a sphere or an ellipsoid, and consists of a pair to be in direct contact with the skin.

A shaft insertion hole 34 is formed at the center of the massage roller 30, and the shaft insertion hole 34 is rotatably fitted to the pair of rotation shafts 20, respectively.

A protrusion 32 is formed to protrude inwardly in the shaft insertion hole 34 of the massage roller 30, and the protrusion 32 is formed of the first and second rolling

bearings

40 and 50 by a screw 60. It is in close contact with the first and second

outer rings

44 and 54.

One end of the massage roller 30 may be coupled to the roller cap 80 to improve the appearance of aesthetics or to prevent foreign matter from entering the shaft insertion hole 34.

The massage roller 30 may be formed of metal or synthetic resin.

When the massage roller 30 is formed of a metal material, it may be formed of a stainless material, and may be formed of copper or aluminum having excellent thermal conductivity in order to increase a cooling effect.

When the massage roller 30 is formed of a synthetic resin material, a thermoplastic resin or a thermosetting resin or a mixture of a thermoplastic resin and a thermosetting resin may be used, and the thermoplastic resin may be polyethylene (PE), polypropylene (PP), or polystyrene (PS). ), Polyvinyl chloride (PVC), polyester (PET), polyamide (PA), polyvinyl alcohol (PVA), polycarbonate (PC) and cellulose (Cellulose) is preferably selected. The thermosetting resin is preferably selected from any one or more of a phenol resin, urethane resin, melamine resin and epoxy resin, wherein the thermoplastic resin and the thermosetting resin are mixed with 70 to 90% by weight of the thermoplastic resin and 10 to 30% by weight of the thermosetting resin, , Polyethylene (PE), polypropylene (PP), polystyrene (PS), polyvinylchloride (PVC), polyester (PET), polyamide (PA ), Polyvinyl alcohol (PVA), polycarbonate (PC) and cellulose (Cellulose) is preferably mixed with any one of the phenol resin, urethane resin, melamine resin and epoxy resin.

The massage roller 30 may be formed in the shape of a sphere having an outer diameter of 18 mm to 32 mm.

When the outer diameter of the massage roller 30 is less than 18mm, the size of the massage roller 30 is too small to gather the skin when the skin massage is weak, and when the massage roller 30 exceeds 32mm massage roller 30 The size of the skin is so large that the skin gathering force is too strong to cause skin problems.

In addition, the massage roller 30 may be formed in an ellipsoid shape as shown in FIG. 7, when the curved surface of the massage roller 30 extends upward and downward, the massage roller 30 extends from the center to the surface of the massage roller 30. The short first distance l1 is formed to be 9mm to 12.5mm, the longest second distance l2 is formed to be 13mm to 16mm, and the difference between the first distance l1 and the second distance l2 is 0.5. It may be formed from mm to 7mm.

As the first distance ℓ1 and the second distance ℓ2 of the massage roller 30 get closer, the effect is similar to the sphere-shaped roller, and the first distance ℓ1 and the second distance ( As the difference between l2) increases, the area where the massage roller 30 comes into contact with the skin increases, thereby increasing the massage effect.

However, if the difference between the first distance (l1) and the second distance (l2) exceeds 7mm, the area of the skin that is in contact with the massage roller 30 when the skin massage is too large to reduce the force to gather the skin Will be created.

The amount of skin collected may vary according to the angle α1 between the pair of massage rollers 30. That is, when the angle α1 is less than 111 °, the angle between the massage rollers 30 may be small, causing problems when the skin is pinched when the skin is massaged, and causing pain to the user, and the angle α1 exceeds 150 °. When the angle between the massage rollers 30 is too large, the skin may not be collected well when the skin is massaged, which may cause a drop in meridians.

In addition, the ease of use may vary depending on the inclination angle α2 of the massage roller 30 based on the central axis of the massage handle 10. That is, when the angle α2 is less than 20 °, the user's hand touches the skin when the skin is massaged. When the angle α2 exceeds 50 °, only the end of the massage roller 30 touches the skin intensively. There is a problem that the massage effect is significantly reduced.

The first and second rolling

bearings

40 and 50 are fitted to the rotating shaft 20 and installed on both sides of the protrusions 32 of the massage roller 30 so that the massage roller 30 can be smoothly and stably rotated. do.

The first and second rolling

bearings

40 and 50 use rolling bearings rather than sliding bearings.

The first and second rolling

bearings

40 and 50 may include first and second

inner rings

42 and 52, first and second

outer rings

44 and 54, and first and second rolling

balls

46 and 56. .

The first inner ring 42 of the first rolling bearing 40 is pressed by the screw 60 and the second inner ring 52 of the second rolling bearing 50 is pressed by the pressing step 70 to rotate the shaft. It is fixed to (20), the first and second outer ring (44, 54) is pressed by the screw 60 is in close contact with the protrusion 32 of the massage roller 30 is rotated with the massage roller 30. .

In addition, the first and second

outer rings

44 and 54 of the first and second rolling

bearings

40 and 50 are in close contact with the inner circumference of the massage roller 30 and rotate together with the massage roller 30.

A bearing is a mechanical element that serves to rotate a shaft while fixing the shaft of a rotating machine to a fixed position and supporting the weight of the shaft and the load on the shaft. Also called bearing, and depending on the contact state It is classified into two types: sliding bearing and rolling bearing.

The sliding bearing has a shape in which the sliding bearing has a flat shape surrounding the surface of the shaft, and is provided with lubricating oil to reduce friction between the contact surfaces. Such sliding bearings have frictional resistance when the shaft rotates because the surfaces are in contact with the surfaces. Larger than rolling bearings

On the other hand, the rolling bearing is to put a ball, roller, needle, etc. between the contact surface of the bearing to reduce the frictional resistance, less friction or power loss than the sliding bearing.

That is, the conventional ball massager has a structure in which the step 3a of the massage ball 3 is simply inserted into the groove 2b of the bearing member 2, as shown in FIG. When the sliding bearing is installed between the members 2, friction balls are generated between the inner circumference of the massage ball 3 and the outer circumference of the sliding bearing or the outer circumference of the bearing member 2 and the inner circumference of the sliding bearing. 3) is not easily rotated.

In addition, even when a rolling bearing is installed between the massage ball 3 and the bearing member 2, there is a problem in that the function of the rolling bearing cannot be properly utilized due to the coupling structure of the massage ball.

However, in the coupling structure of the massage roller 30 and the rotating shaft 30 of the roller massager, the first and second inner rings 42, instead of the sliding bearing between the massage roller 30 and the

rotating shaft

30, 52 and first and second rolling

bearings

40 and 50 formed of first and second

outer rings

44 and 54 and first and second rolling

balls

46 and 56, respectively. 42 and 52 are configured to be fixed to the rotating shaft 20, and the first and second

outer rings

44 and 54 are configured to be coupled to the massage roller 30.

Accordingly, the massage roller 30 is naturally rotated while maintaining a constant angle with the rotating shaft 20 by reducing friction between the inner circumference of the massage roller 30 and the outer circumference of the rotating shaft 20. Noise between the rotating shafts 20 can be reduced.

In other words, the roller massager having an improved coupling structure of the roller according to the present invention improves the arrangement and fastening method of the rolling bearings, thereby improving the first and second

inner rings

42 and 52 of the first and second rolling

bearings

40 and 50. The first and second

outer rings

44 and 54 are rotated separately by the first and second rolling

balls

46 and 56 so as to properly utilize the function of the rolling bearing.

The screw 60 is screwed or forced fitting to the end of the rotary shaft (20).

The screw 60 is composed of a pressing portion 62 for pressing the first rolling bearing 40 and a coupling portion 64 coupled to the rotating shaft 20.

The diameter t1 of the pressing part 62 of the screw 60 is formed to be smaller than the inner diameter t2 of the first outer ring 44 of the first rolling bearing 40. When t1) is larger than the inner diameter t2 of the first outer ring 44, the pressing part 62 is strongly pressed and fixed not only to the first inner ring 42 but also to the first outer ring 44, so that the massage roller 30 is not rotated.

The assembly method of the roller massager having the improved coupling structure of the roller configured as described above will be described with reference to the accompanying drawings.

In order to assemble the roller massager improved in the coupling structure of the roller according to the present invention, as shown in FIG. 7, first, the second rolling bearing 50 is inserted into the rotating shaft 20 formed at one end of the massage handle 10. The second inner ring 52 of the second rolling bearing 50 is in close contact with the pressing step 70.

Next, the massage roller 30 is inserted into the rotating shaft 20, the first rolling bearing 40 is inserted, the shaft insertion hole 34 of the massage roller 30 is inserted into the rotating shaft 20. The first and second

outer rings

44 and 54 of the first and second rolling

bearings

40 and 50 are in close contact with both sides of the protrusions 32 of the massage roller 30.

Next, the screw 60 is screwed or forced fit to the screw coupling groove 22 of the rotary shaft 20.

At this time, the first inner ring 42 of the first rolling bearing 40 and the second inner ring 52 of the second rolling bearing 50 are the pressing portion 62 and the pressing step 70 of the screw 60. The first and second inner rings (42, 52) are fixed to the rotation shaft 20, and the first and second outer rings (44, 54) of the first and second rolling bearings (40, 50) at the same time The protrusions 32 of the massage roller 30 are fixed to both sides.

Finally, the roller cap 80 is coupled to one end of the massage roller 30 to complete the assembly of the roller massager in which the coupling structure of the roller according to the present invention is improved.

Referring to the accompanying drawings and the use and operation of the roller massager improved the combined structure of the assembled roller as follows.

In order to use the roller massager with the improved structure of the roller according to the present invention, first grab the massage knob 10, and then massage the roller 30 by moving it to the skin before and after, as shown in FIG. do.

At this time, the first inner ring 42 of the first rolling bearing 40 and the second inner ring 52 of the second rolling bearing 50 are pressed by the screw 60 and the pressing step 70 to rotate the shaft. It is fixed to (20), the first and second outer ring (44, 54) is pressed by the screw 60 is in close contact with the protrusion 32 of the massage roller 30 is rotated together with the massage roller (30). .

Therefore, by reducing friction between the inner circumference of the massage roller 30 and the outer circumference of the rotating shaft 20, the massage roller 30 is naturally rotated while maintaining a constant angle with the rotating shaft 20, and at the same time, the massage roller 30 and the rotating shaft. Noise between the 20 can be reduced.

As described above, what is described in the present invention is only one embodiment for implementing a roller massager with improved coupling structure of the roller, the present invention is not limited to the above embodiment. As claimed in the appended claims, any person skilled in the art to which the present invention pertains should be regarded as falling within the scope of the present invention to the extent that various modifications can be made without departing from the gist of the present invention. .

[Description of the code]

10: massage handle 20: rotating shaft

30: massage roller 32: protrusion

40: first rolling bearing 42: first inner ring

44: first outer ring 46: first cloud ball

50: second rolling bearing 52: second inner ring

54: second outer ring 56: second cloud ball

60: screw 70: pressure step

80: roller cap

Claims

A massage handle 10;

A pair of rotating shafts 20 formed at one end of the massage handle 10;

A pair of massage rollers 30 respectively coupled to the pair of rotation shafts 20 and having protrusions 32 formed on an inner circumference thereof;

First and second rolling bearings 40 and 50 fitted to the rotating shaft 20 and installed on both sides of the protrusion 32 of the massage roller 30;

Screw 60 is coupled to the end of the rotating shaft 20 and

Consists of the pressure step (70) formed between the massage handle 10 and the rotating shaft 20,

The first and second rolling bearings 40 and 50 include first and second inner rings 42 and 52, first and second outer rings 44 and 54, and first and second rolling balls 46 and 56. under,

The first inner ring 42 of the first rolling bearing 40 is pressed by the screw 60 and the second inner ring 52 of the second rolling bearing 50 is pressed by the pressing step 70 to rotate the shaft. It is fixed to (20), the first and second outer ring (44, 54) is pressed by the screw 60 is in close contact with the protrusion 32 of the massage roller 30 is rotated together with the massage roller 30 Roller massager with improved coupling structure of the roller, characterized in that.
The method of claim 1,

One end of the massage roller 30, roller cap 80 is improved roller coupling structure, characterized in that the coupling structure is coupled.
The method of claim 1,

The massage roller 30 is a roller massager with improved coupling structure of the roller, characterized in that formed of a metal or synthetic resin material.
The method of claim 1,

The massage roller 30 is a roller massager with improved coupling structure of the roller, characterized in that the plated to absorb the heat of the skin to lower the skin temperature.
The method of claim 1,

The massage roller 30 is a roller massager with improved coupling structure of the roller, characterized in that formed in a sphere having an outer diameter of 18mm to 32mm.
The method of claim 1,

The massage roller 30 is a roller massager with improved coupling structure of the roller, characterized in that the first distance (l1) is formed of an ellipsoid of 9mm to 12.5mm, the second distance (l2) is 13mm to 16mm.
The method of claim 1,

The screw 60 is composed of a pressing portion 62 for pressing the first rolling bearing 40 and the coupling portion 64 coupled to the rotating shaft 20, the diameter of the pressing portion 62 of the screw 60 (t1) is a roller massager with improved coupling structure of the roller, characterized in that formed smaller than the inner diameter (t2) of the first outer ring (44) of the first rolling bearing (40).
The method of claim 1,

The angle α1 between the pair of massage rollers 30 is 111 ° to 150 °, and the inclination angle α2 of the massage roller 30 is 20 ° to 50 °. Roller massager with improved construction.