JP3392784B2 - Roller massage mechanism and massage device incorporating this mechanism - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roller massage mechanism capable of performing various massage operations on a human body and a massage device incorporating this mechanism.

[0002]

2. Description of the Related Art Conventionally, as a massage device having a roller massage mechanism, for example, Japanese Patent Laid-Open No. 59-28963.
Bed type massage device described in the publication,
Japanese Patent Publication No. 4-78307 and Japanese Utility Model Laid-Open No. 10962
There is known a relatively small placement type massage device described in Japanese Patent No. 8 publication. Among them, the bed type massage device includes a roller massage mechanism that moves in the longitudinal direction with respect to the bed, and the massage mechanism has a rotating shaft that is oriented in the width direction of the bed and moves in the longitudinal direction. And a pair of left and right massage rollers which are provided so as to be inclined with respect to the axial direction of the rotary shaft and whose inclination directions are opposite to each other.

Further, the above-mentioned stationary massage device has a roller massage mechanism in a small stationary casing having an opening opening upward. The roller massage mechanism in this case includes a rotary shaft rotatably supported by the casing, and a pair of left and right disc-shaped massage rollers provided at a position in the middle of the rotary shaft and corresponding to the opening. The pair of left and right massage rollers are also provided so as to be inclined with respect to the axial direction of the rotary shaft so that the inclination directions are opposite to each other. Further, in this type of roller massage mechanism, since the pair of left and right massage rollers are inclined in opposite directions to each other, the mutual intervals of the outer peripheral portions of both massage rollers may be widened or narrowed as the rotary shaft rotates. A massage massage can be performed by pressing the affected area between both massage rollers.

[0004]

However, in the above-mentioned conventional roller massage mechanism, the pair of left and right massage rollers are fixed to the rotary shaft in a state where the inclination directions are opposite to each other, and the rotary shafts of both rollers are fixed. Since it is not possible to change the inclination direction relative to, only rubbing massage can be performed. Therefore, in the case of the conventional roller massage mechanism that massages with a pair of tilted massage rollers on the left and right, only the massage with massage can be performed, so that it is not possible to meet the diversified needs of the user, and it becomes tired immediately. There were many

On the other hand, various massage devices themselves have been proposed which can perform various massage operations other than massage by massaging. However, such a massage device has a problem in that the mechanical structure of the drive system of the massage member and the control program are complicated due to various massage operations, resulting in a large size and high cost. Therefore, the inventor of the present application has already developed a roller massage mechanism that can perform a massage operation other than the massage of kneading without complicating the structure so much (see Japanese Patent Application No. 10-124893). This massage mechanism is provided with a rotating shaft having a pair of left and right first and second shafts arranged coaxially with each other, and in the middle of each shaft inclining with respect to the axial direction. A pair of left and right massage rollers, and a switching means for switching between a kneading posture in which the inclination directions of the pair of left and right massage rollers are opposite to each other and a non-rubbing posture in which these inclination directions are the same, As this switching means, a half-rotation clutch mechanism that restricts the relative rotation range between the shaft portions to half rotation is adopted.

However, in the roller massage mechanism adopting the switching means composed of the half rotation clutch mechanism, when the relative rotation between the first shaft portion and the second shaft portion is performed too freely, the affected area is massaged. During the process, the pressure applied to the massage roller from the affected part causes the driven side shaft to rotate relative to the drive side shaft without permission, and both massage rollers are momentarily collapsed in the rubbing or non-rubbing position. It may rotate, which may prevent proper massage operation. In view of such an actual situation, the present invention provides a roller massage mechanism in which a pair of left and right massage rollers can be switched between a kneading position and a non-kneading position so that each of the positions can be appropriately held, and a kneading position or a non-kneading position can be maintained. The purpose is to ensure an appropriate massage operation in any of the rubbing postures.

[0007]

In order to achieve the above object, the present invention takes the following technical means. That is, according to the present invention, a massage roller is provided at an intermediate portion of a pair of left and right first and second shaft portions that are coaxially arranged with each other, and the massage roller is inclined with respect to the axial direction. Roller massager provided with switching means for switching the pair of left and right massage rollers between a rubbing posture in which their inclination directions are opposite to each other and a non-rubbing posture in which their inclination directions are the same by rotating them relative to each other. The mechanism is provided with holding means for holding or restraining both massage rollers in a kneading position or a non-kneading position by suppressing or restricting relative rotation of both shaft parts that have been switched by the switching device.

In the present invention described above, the specific structure of the switching means is not particularly limited, but for example, a mechanical structure for changing the posture of the massage roller along with the switching of the rotational driving direction of the rotary shaft (for example, described later). A half rotation clutch mechanism or the like) can be adopted. Then, according to the present invention, by leaving the massage rollers in the same non-rubbing posture with the same inclination direction, the outer peripheral portion of each massage roller moves the contact point of the affected part to the left and right while maintaining a predetermined interval, You can get a massage action other than massage. On the other hand, when the rotary shafts are rotated while the massage rollers are in a rubbing position, the outer peripheral portions of the massage rollers repeat approaching and separating from each other, and the rubbing massage is performed on the affected area.

In this case, since the holding means suppresses or regulates the relative rotation of both shaft portions to hold both massage rollers in the rubbing posture or the non-rubbing posture, the following side of the massage roller is massaged when the affected part is massaged. Even if the massage roller supported by the shaft receives pressure from the affected area, it is prevented that the tilting direction of the massage roller on the driven side suddenly changes and the rubbing posture or the non-rubbing posture collapses momentarily. Good massage can be performed with both massage rollers maintained in an appropriate rubbing posture or a non-rubbing posture.

A more specific embodiment of the massage mechanism of the present invention will be described below. That is, in the present invention, the rotating shaft has a first shaft portion that supports one massage roller, and a second shaft portion that supports the other massage roller and that is arranged coaxially with the first shaft portion. In this case, the switching means can be constituted by a half-rotation clutch mechanism that limits the range in which the first shaft portion and the second shaft portion rotate relative to each other to approximately half rotation. In such a structure, when the rotation direction of the first shaft portion is switched by the driving means, the relative rotational position of the second shaft portion with respect to the first shaft portion changes by half a rotation. For this reason,
The massage roller can be switched between the rubbing posture and the non-rubbing posture by simply rotating or reversing the rotational driving direction of the driving means, and the posture switching control of the massage roller can be performed very easily.

More specifically, the half-rotation clutch mechanism has a lateral groove that is coaxially fixed to the end of the second shaft portion and is non-rotatably fixed, and that has a circumferential length corresponding to half the rotation. And a cylindrical member provided in the cylindrical portion, and a first shaft portion coaxially and rotatably inserted into the cylindrical member, which is radially outwardly projectingly provided, and the projecting end portion is provided in the lateral groove. It can be configured with a stopper pin that is stored.
When a half-rotation clutch mechanism composed of the tubular member and the stopper pin is adopted, a brake member that applies frictional resistance to relative rotation between both shaft portions can be adopted as the holding means. For example, a brake cylinder whose base end is coaxially and non-rotatably fixed to the first shaft and whose inner peripheral surface is slidably abutted on a cylinder member of the half-rotation clutch mechanism. can do.

In this case, if a rubber shoe that increases the frictional resistance between them is interposed between the tubular member and the brake tubular body, the space between the first shaft portion and the second shaft portion can be increased. Appropriate rotation resistance can be imparted to the relative rotation.
On the other hand, as the half-rotation clutch mechanism, the first clutch body fixed to the end of the first shaft portion and the end of the second shaft portion are rotatably and axially movable within a half-rotation range. The second clutch body is detachably engaged with the first clutch body, and the second clutch body is once disengaged from the first clutch body when the rotation shaft is normally or reversely rotated and then meshed with the clutch body again. It is possible to employ the one provided with the cam means.

In the case of such a half-rotation clutch mechanism, when the rotation direction of the rotary shaft is reversed, the second clutch body once disengages from the first clutch body and engages with the first clutch body again. For this reason, if the two clutch bodies are engaged with each other at two positions that are 180 degrees apart from each other in the circumferential direction, the relative rotation between the two shaft portions in which the switching of the inclination direction of the rollers is completed can be almost completely regulated. Like That is, in this case, the holding means includes the clutch teeth formed at the meshing portion of the two clutch bodies so that the meshing positions of the both clutch bodies are two positions 180 degrees apart from each other in the circumferential direction around the axis. It does not require a member such as the brake cylinder or the rubber shoe that imparts frictional resistance to relative rotation between the two shaft portions.

In the above-mentioned present invention, the pair of left and right massage rollers are arranged so that the portion closest to the counterpart massage roller is farther from the rotary shaft than the portion farthest from the same massage roller. It is preferable to be provided eccentrically. With such an eccentric structure, when both the massage rollers are in a non-rubbing position and the rotation shaft is rotated, the outer peripheral portions of both massage rollers can obtain a massage operation in which the massage roller repeatedly advances and retracts alternately with respect to the affected area. Become. The alternating movement of the outer periphery of the massage roller corresponds to the operation of slowly pushing the affected part (acupressure massage) when the rotation speed of the rotary shaft is relatively low, and the rotation speed of the rotary shaft is relatively high. When it is set, it corresponds to a motion of hitting the affected part (a hit massage).

As described above, according to the present invention, since the acupressure massage and tapping massage other than the massage by the massage roller can be performed, the massage operation other than the massage by massage can be performed without making the structure so complicated. The roller massage mechanism can be obtained at low cost. The change in the rotational speed of the rotary shaft as described above is carried out by incorporating a function in the driving means capable of changing the rotational speed of the rotary shaft in at least two stages when the pair of left and right massage rollers are in the non-rubbed posture. be able to.

By the way, in order to prevent unnecessary friction of the massage roller with respect to the affected part or the cover member, it is preferable that a pair of left and right massage rollers be rotatably connected to the rotary shaft. Even when the relative rotation between the rotary shaft and the rotary shaft is performed too freely, the inclination direction of the massage roller may be momentarily changed by the pressure received from the affected area, and a proper massage operation may not be performed. Therefore, in the present invention, it is recommended to provide a brake unit that adds frictional resistance to the relative rotation of the pair of left and right massage rollers with respect to the rotation axis.

The roller massage mechanism of the present invention does not exclude the addition of massage members other than the pair of left and right massage rollers. For example, a large number of mini-rollers for roller-massaging the affected area can be provided on the axially opposite end portions of the rotary shaft with respect to the pair of left and right massage rollers. In this case, in addition to rubbing and acupressure massage by a pair of left and right massage rollers, it is possible to perform roller massage by a large number of mini rollers by moving the affected part to both axial ends of the rotary shaft.

The roller massage mechanism of the present invention described above can be used in various types such as a relatively small stationary massage device or a handheld massage device, or a relatively large standing massage device or chair massage device. Can be incorporated into the massage device. In this case, in the stand-up type massage device or the chair type massage device, since it is necessary to massage the back region of the human body in a wide vertical range, a moving means for moving the roller massage mechanism itself in the vertical direction is provided. Preferably.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 to 10 show a first embodiment of the present invention. FIG. 3 shows an example of a massage device 1 incorporating the roller massage mechanism 4 according to the present invention. In this case, the massage device 1 is of a relatively small and flat mount type. This placement type massage device 1 includes a placement type casing 2 having an opening 2A that opens upward, and a roller massage mechanism 4 housed in the casing 2, and the opening 2A of the casing 2 is provided.
Is closed by a soft cover member 3 made of a stretchable cloth material or the like. The massage device 1 is used, for example, by putting it on the back, waist, thighs or calf of a human body lying on his back, or by placing the sole of the foot on the massage mechanism 4 while sitting on a chair. be able to.

As shown in FIGS. 1 and 2, the roller massage mechanism 4 has a support frame 8 having left and right support brackets 7, 7 arranged at a predetermined interval from each other, and a support frame 8 for this support frame. Both brackets 8,
7, a rotary shaft 10 rotatably held by a bearing 9 between each other, a pair of left and right rotors 12 and 13 inclined with respect to the rotary shaft 10 in the axial direction thereof, and the rotary shaft 1
And a driving means 14 for rotating 0. Of these, the rotors 12 and 13 are arranged at positions corresponding to the openings 2A in the casing 2, and the boss portion 15 eccentrically inserted with respect to the rotating shaft 10 and the boss portion 1 are provided.
5 has substantially disc-shaped massage rollers 16L and 16R held in a state of being inclined with respect to the axial direction of the rotary shaft 10.

As shown in FIG. 4, the boss portion 15 includes a pair of holding plates 15a and 15b each having a shape in which a cylindrical body is cut obliquely with respect to its axis, and both holding plates 15a and 15b.
and a central plate 15c held in a sandwich between a and 15b. And the central plate 15
Massage roller 16L, 1 in which c is fitted in the central portion
Both clamping plates 15a and 15b are brought into contact with the front and back of the 6R, and the clamping plates 15a and 15b are fastened to the central plate 15c with the bolts 18 and the nuts 19 in a skewered shape so that the boss portions 15 are mutually connected. It is integrated.

Further, the boss portion 15 is provided so as not to rotate relative to the rotary shaft 10 via a rotation preventing structure (not shown), and rotates integrally with the rotary shaft 10.
The central plate 15c is formed in a disk shape, and both front and back surfaces thereof are in contact with the inclined end surfaces of the sandwiching plates 15a and 15b. Therefore, the central plate 15c is inclined with respect to the axial direction of the rotary shaft 10.
The center plate 15c may be integrally formed with either one of the sandwiching plates 15a and 15b, or may be integrally formed with both sandwiching plates 15a and 15b by a half thickness.

On the other hand, the massage roller 16L,
16R is formed in a disk shape having a central hole 16a in the center thereof, and a central plate 15c is slidably fitted in the central hole 16a so as to be rotatable relative to the plate 15c. Therefore, the massage rollers 16L and 16R are rotatably connected to the rotary shaft 10 in a state of being inclined with respect to the axial direction of the rotary shaft 10. As shown in FIG. 1, the rotary shaft 10 includes a first shaft portion 10L that supports the left massage roller 16L and a first shaft portion 10L that supports the right massage roller 16R and is arranged coaxially with the first shaft portion 10L. And a biaxial portion 10R.
Of these, the first shaft portion 10L has a mounting portion for the left rotor 12 and a penetrating portion for the driving means 14 in order from the left,
The second shaft portion 10R has a mounting portion for the right rotor 13.

The rotary shaft 10 is divided into a left and right first shaft portion 10L and a second shaft portion 10R at a position between the driving means 14 and the right rotor 13 via a dividing end 10a (see FIG. 5). The divided ends 10b and 10c are connected to each other via a half-rotation clutch mechanism 21 described later.
As shown in FIGS. 5 and 6, the half rotation clutch mechanism 2 is used.
Reference numeral 1 denotes a tubular member 20 coaxially and non-rotatably fixed to the divided end portion 10c of the second shaft portion 10R, and the tubular member 20.
First shaft portion 10L coaxially and rotatably inserted in the shaft
And a stopper pin 25 protruding radially outward from the divided end portion 10b.

The tubular member 20 is formed in a cylindrical shape having an insertion hole 22 penetrating the central portion in the axial direction thereof, and the first shaft portion is provided at the opening edge portion on the drive means 14 side (left side in FIG. 5). 10
Bearing 2 that holds the split end 10b of L rotatably
Equipped with 3. In addition, a half-moon-shaped lateral groove 24 having a circumferential length corresponding to a half rotation is formed in the axially intermediate portion of the tubular member 20, and the lateral groove 24 has a depth from the outer peripheral surface of the tubular member 20 to the insertion hole 22. Have. On the other hand, the split end 10b of the first shaft portion 10L of the rotary shaft 10 is provided with the stopper pin 25 fixed so as to project radially outward by screwing a set screw or the like. The projecting end portion 25 is movably accommodated in the lateral groove 24 of the tubular member 20.

A screw hole 28 is provided at the right end of the tubular member 20, into which a set screw 27 for locking the divided end 10c of the second shaft portion 10R is screwed. As is clear from the above, the rotor 1 on the left side of the rotary shaft 10
The first shaft portion 10L that supports 2 is a half rotation clutch mechanism 2
The second shaft portion 1 that is rotatable relative to the tubular member 20 that constitutes the first rotation member within a range of half rotation and that supports the rotor 13 on the right side.
0R is fixed so as not to rotate relative to the tubular member 20. Therefore, if the first shaft portion 10L of the rotary shaft 10 is rotated counterclockwise in FIGS. 2 and 6 by the drive means 14, the stopper pin 25 causes the stopper pin 25 to rotate in one radial groove of the half-moon lateral groove 24 of the tubular member 20. The second shaft portion 10R abuts on the surface 24a, and the second shaft portion 10R rotates integrally with the first shaft portion 10L in the counterclockwise direction.

On the other hand, when the first shaft portion 10L is rotated in the clockwise direction opposite to the above direction from this state, the stopper pin 25 moves in the lateral groove 24 so that the stopper pin 25 moves to the other radial groove surface 24b of the lateral groove 24. Abutting, and by this abutment, the second shaft portion 10R
Rotates integrally with the first shaft portion 10L in the clockwise direction. Then, while the stopper pin 25 moves from the one radial groove surface 24a to the other radial groove surface 24b, the right rotor 13 provided on the driven second shaft portion 10R becomes the left rotor 12. On the other hand, it will rotate half a turn relatively.

As a result, the massage rollers 16L and 16R of the left and right rotors 12 and 13 are in a non-rubbing posture in which they are parallel to each other in the same inclination direction as shown by the solid line in FIG. As indicated by the dotted chain line, they can be in a kneading posture in which their inclination directions are opposite to each other. Therefore, the half-rotation clutch mechanism 21 allows the pair of left and right massage rollers 16L and 16R to be in a rubbing position in which their tilt directions are opposite to each other or a non-rubbing position in which their tilt directions are the same. A switching means 26 for switching is configured.

In this embodiment, each of the rotors 12 and 13 is
By decentering the boss portion 15 of the
The pair of left and right massage rollers 16L, 16R is attached to the rotary shaft 10 so that the portion closest to the partner massage rollers 16R, 16L is farther from the rotary shaft 10 than the portion farthest from the rollers 16R, 16L. It is mounted eccentrically to the other side. Therefore, when the massage shafts 16L and 16R are rotated in a non-rubbed posture, the rollers 16L and 16R are rotated as shown in FIG.
A massage operation in which the outer peripheral portion of R repeats advance and retreat alternately to the affected area can be obtained. At this time, it is preferable that the difference between the outer circumference of the roller in the advanced state and the outer circumference of the roller in the retracted state is about 15 mm.

As shown in FIG. 2, the drive means 14 includes a motor 31 and the rotating shaft 1 that reduces the driving force of the motor 31.
The speed reducer 32 that transmits 0 (first shaft portion 10L) is integrally or separately provided. As shown in FIG. 1, this speed reducer 3
2, a gear case 29 in which the rotary shaft 10 is rotatably inserted through a bearing 30, and a worm wheel 34 fixed to a portion of the rotary shaft 10 in the gear case 29,
The motor 31 should be engaged with the worm wheel 34.
And a worm 35 fixed to the output shaft 33.

In the present embodiment, the motor 31 can be rotated in the forward and reverse directions by an electric control circuit (not shown), which allows the rotary shaft 10 to be switched between the forward and reverse directions. Further, the electric control circuit of the drive means 14 has a function of changing the rotational speed of the rotary shaft 10 in at least two stages when the massage rollers 16L and 16R are in the non-rubbing posture. This shifting function may be performed stepwise or steplessly. Further, this gear shifting function may be performed mechanically (with gear rearrangement or the like) other than the control circuit for electrically controlling the motor 31.

Then, the massage rollers 16L, 16R
In the non-rubbing position (in the case of FIG. 9), when the rotation speed of the rotary shaft 10 is set to a relatively low speed, the outer peripheral portions of both rollers 16L and 16R alternately and slowly repeat forward and backward movements. Shiatsu massage is performed, which is like feeling shiatsu from the left and right of the affected area. In order to perform such a shiatsu massage, the rotation speed of the rotating shaft 10 is set to about 50 rp.
It may be set to about m.

On the other hand, when the massage rollers 16L and 16R are in the non-rubbing posture (in the case of FIG. 9), when the rotation speed of the rotary shaft 10 is set to a relatively high speed, the outer peripheral portions of both rollers 16L and 16R alternate. Since the patient is repeatedly moved forward and backward at high speed to apply an impact to the affected area, a hit massage is performed. In order to perform such a hitting massage, the rotation speed of the rotary shaft 10 is set to about 150.
The speed may be set to be equal to or higher than rpm, and particularly when the speed is set to be 200 rpm, a suitable tapping feeling can be obtained.

By the way, each massage roller 16L, 1
When the rotating shaft 10 is rotated in a state where the outer peripheral portion of 6R is in contact with the affected part, the inclination direction of the massage roller 16R supported by the second shaft part 10R on the driven side is instantaneously changed by the pressure received from the affected part. There is a risk that proper massage operation cannot be performed. That is, in the roller massage mechanism 4 of this embodiment, the rotary shaft 10 is replaced by the first shaft portion 10.
Since L and the second shaft portion 10R are divided and connected by the half-rotation clutch mechanism 21, the relative rotation between the first shaft portion 10L and the second shaft portion 10R by the mechanism 21 is too free. Then, the second shaft portion 10R on the driven side freely rotates relative to the first shaft portion 10L on the driving side due to the pressure received by the massage roller 16R on the right side from the affected area, and the rubbing posture or the non-rubbing posture is instantaneous. In some cases, the massage rollers 16L and 16R rotate in a state of being collapsed, and an appropriate massage operation may not be performed.

In order to prevent unnecessary friction against the affected part and the cover member 3, it is preferable that a pair of left and right massage rollers 16L and 16R be rotatably connected to the rotary shaft 10. Massage roller 16
If the relative rotation between L and 16R and the rotary shaft 10 is performed too freely, the inclination direction of the massage rollers 16L and 16R instantaneously changes due to the pressure received from the affected area, and in this case as well, proper massage operation can be performed. May not be.
Therefore, in the present embodiment, the relative rotation between the shaft portions 10L and 10R is suppressed by friction, and the massage rollers 1
Holding means 39 for holding 6L and 16R in a kneading position or a non-kneading position, and a pair of left and right massage rollers 16L and 16
Brake means 40 is provided which adds frictional resistance to the relative rotation of R with respect to the rotary shaft 10.

Of these, the holding means 39 is shown in FIGS.
As shown in FIG. 4, the brake member 38 applies frictional resistance to the relative rotation between the shaft portions 10L and 10R. The brake member 38 has a base end portion coaxial with the first shaft portion 10L and is not rotatable. And the inner peripheral surface of the brake cylinder body 37 slidably abutted on the cylinder member 20 of the half-rotation clutch mechanism 21. On the other hand, the braking means 40
Is constituted by pressing the inclined surfaces of the sandwiching plates 15a and 15b against the massage rollers 16L and 16R with an appropriate pressure.

As described above, in the present embodiment, the brake cylinder 37 allows the relative rotation between the first shaft portion 10L and the cylinder member 20 to be braked by friction, while allowing the relative rotation between the two. Has been done. The base end portion of the brake cylinder 37 is fixed to the coaxial portion 10L by a stop pin 37B that is driven into the first shaft portion 10L in the radial direction. In this case, even when the massage roller 16R supported by the second shaft portion 10R on the driven side receives pressure from the affected portion when massaging the affected area, the braking action of the brake cylinder 37 causes the massage roller on the driven side. It is prevented that the rubbing posture or the non-rubbing posture is suddenly collapsed due to the abrupt change of the inclination direction of 16R, and both massage rollers 16L and 16R are maintained in the proper rubbing posture or the non-rubbing posture to provide a good massage. You can do it.

With the brake member 38 formed of the brake cylinder 37, the relative rotation between the shaft portions 10L and 10R, which have been switched by the switching means 26, is suppressed by friction, and the massage rollers 16L and 16L.
Holding means 39 for holding R in a kneading position or a non-kneading position is configured. In addition, the brake member 38 is provided on both shaft portions 1.
As long as a frictional resistance is added to the relative rotation between 0L and 10R, the cylinder member 20 other than the brake cylinder 37 can be used.
It can also be constituted by a rubber shoe interposed between the inner peripheral surface of the above and the divided end portion 10b of the first shaft portion 10L.

Further, as shown in FIG. 7, a rubber shoe 37A for increasing the frictional resistance between the tubular member 20 and the brake tubular body 37 may be interposed between the tubular member 20 and the brake tubular body 37. In this case, the rubber shoe 37A can impart an appropriate rotational resistance to the relative rotation between the first shaft portion 10L and the second shaft portion 10R, and the left and right massage rollers 16L. 16
The posture holding function of R can be expected more reliably. On the other hand, FIG.
Shows a half-rotation clutch mechanism 21 employing a switching means 26 and a holding means 39 different from those in FIGS. 5 to 7.

As shown in FIG. 8, the half rotation clutch mechanism 21 in this case has a first clutch body 81 fixed to the end of the first shaft portion 10L and a half rotation to the end of the second shaft portion 10R. The second clutch body 82 which is rotatably and axially movably inserted in the above range and which is detachably engaged with the first clutch body 81; and the second clutch body 82 when the rotary shaft 10 is normally or reversely rotated. A cam means 8 which is disengaged from the first clutch body 81 and then engaged with the clutch body again.
3 and 3 are provided. The first and second clutch bodies 8
Each of the clutch teeth 84 of No. 1 and No. 82 is formed in a shape in which the concave portion 85A and the convex portion 85B are interchanged in a range that is divided into four equal parts in the circumferential direction around the axial center thereof. The second clutch body 82 is adapted to mesh with each other at two positions separated by 180 degrees in the circumferential direction around the axis thereof.

On the other hand, the cam means 83 includes the second clutch body 8
A dogleg-shaped cam hole 86 formed in the outer peripheral wall portion of 2,
The cam pin 8 that is radially driven into the end of the second shaft portion 10R.
7 and the protruding end of the cam pin 87 is movably accommodated in the cam hole 86. Then, as shown in FIG. 8, the bent portion at the center of the V-shaped cam hole 87 is located on the first clutch body 81 side (left side in FIG. 8), and both end portions are the first clutch. It is arranged on the outer peripheral wall portion of the second clutch body 82 so as to be located on the side opposite to the body 81 (right side in FIG. 8).

The second clutch body 82 includes the second shaft portion 1
It is constantly urged toward the first clutch body 81 side by the urging spring 88 fitted to 0R. In the case of the half-rotation clutch mechanism 21 of FIG. 8, when the rotating shaft 10 that normally rotates in the direction of arrow A in FIG. 8 turns in the reverse direction of arrow B, the reaction force received from the cam pin 87 causes the second clutch body 82 to move. The second clutch body 82 moves to the side opposite to the first clutch body 81 along the cam hole 86, disengages from the first clutch body 81, and when the cam pin 87 crosses the bent portion of the cam hole 86, the second clutch body 82 moves the first clutch. It returns to the body 81 side and again engages with the clutch body 81.

Even when the rotating shaft 10 rotating in the direction of arrow B in FIG. 8 turns to rotate in the direction of arrow A, the second clutch body 82 is once disengaged from the first clutch body 81 in the same manner as above. After that, the first clutch body 81 is engaged again. Then, both clutch bodies 81,
The clutch teeth 84 of the gear 82 mesh with each other at two positions 180 degrees apart from each other in the circumferential direction, so that the relative movement between the shaft portions 10L and 10R after the switching of the inclination directions of the massage rollers 16L and 16R is completed. The rotation will be almost completely restricted by the clutch teeth 84.

That is, in the half-rotation clutch mechanism 21 shown in FIG. 8, the meshing position is 1 in the circumferential direction around the axis.
Both clutch bodies 8 so that they are in two positions 80 degrees apart
The clutch teeth 84 formed at the meshing portions of the shafts 1 and 82 constitute the holding means 39 that restricts the relative rotation between the shaft portions 10L and 10R. Therefore, in this case, as shown in FIGS. Brake cylinder 37 and rubber shoe 37A
There is no need for a member that imparts frictional resistance to relative rotation between both shaft portions 10L and 10R. In the massage device 1 having the above configuration, when the rotating shaft 10 is rotated in the forward rotation direction (counterclockwise in the directions shown in FIGS. 2 and 6), the massage rollers 16L, 1 of the rotors 12, 13 are rotated.
The 6Rs rotate in a non-rubbing posture in which they are parallel to each other, and as shown in FIG. 9, the outer peripheral portions of the rollers 16L, 16R alternately advance and retract with respect to the affected area.

At this time, if the rotational speed of the rotary shaft 10 is adjusted to a relatively low speed (around 50 rpm), acupressure massage for alternately and slowly pressing the affected area is performed.
Rotation speed is relatively high (200 rpm at 150 rpm or higher)
If it is adjusted to about pm), a hitting massage is performed in which the impact is alternately applied to the affected area. On the other hand, when the rotating shaft 10 is rotated in the reverse direction (clockwise in the directions shown in FIGS. 2 and 6), the massage rollers 16L and 16R of both rotors 12 and 13 rotate in a kneading position, and as shown in FIG. Since the outer peripheral portions of the rollers 16L and 16R gradually advance while approaching each other and continuously withdrawing while gradually separating from each other, a massage massage is performed.

It is preferable that the rotation speed of the rotary shaft 10 at the time of the massage is about 50 to 60 rpm. As described above, according to the massage device 1 of the present embodiment, it is possible to perform kneading massage and other massage operations only by switching the rotation direction of the rotating shaft 10. Further, the shiatsu massage and the hitting massage can be performed only by changing the rotation speed of the rotating shaft 10 in the non-rubbing posture.
It is possible to obtain three types of massage motions.

Further, in the case of performing each of the massage operations described above, the holding means 39 suppresses or regulates the relative rotation of the shaft portions 10L and 10R with respect to each other, and the massage rollers 1 are provided.
Since 6L and 16R are held in a rubbing position or a non-rubbing position, the shaft part 1 on the driven side when massaging the affected part 1
Even if the massage roller 16R supported by the 0R receives pressure from the affected area, it is possible to prevent the massage roller 16R on the driven side from being abruptly changed in the inclination direction to suddenly collapse the rubbing posture or the non-rubbing posture. Therefore, according to the massage device 1 of the present embodiment, both massage rollers 16
Good massage can be performed in a state where L and 16R are maintained in an appropriate rubbing posture or a non-rubbing posture.

FIG. 11 shows a second embodiment of the present invention. The massage device of this embodiment has a seat portion 41.
And a backrest portion 42 erected on the end of the seat portion 41.
And a roller-type massage device 4 shown in FIG. 1 housed inside the backrest portion 42, which is a chair-type massage device 43. In addition, the roller massage mechanism 4
Can be incorporated not only in the backrest portion 42 but also in the seat portion 41 and a chest (not shown). When the roller massage mechanism 4 is incorporated in the backrest portion 40, if a moving means for moving the mechanism 4 in the vertical direction is provided, massage can be performed in a wide range from the occipital region to the back and waist.

12 and 13 show a third embodiment of the present invention. The massage device of this embodiment is
A hand-held casing 53 having an opening 51 opening to the front side (upper side in FIG. 12) and having hand-held portions 52 on both left and right sides, and a roller massage mechanism 4 housed in the casing 53 were provided. It is a handheld massage device 54. The casing 53 in this case is provided with a pair of left and right openings 51, 51 on the upper surface side.
51 left and right massage rollers 16L. 16R are respectively housed and project to the upper surface side of the casing 53. The cover member 3 is separated into left and right parts to close the openings 51, 51, respectively.

Further, as shown in FIG. 13, the braking means 40 of this embodiment includes massage rollers 16L and 16R.
The ring springs 55 are arranged on both front and back sides. The ring spring 55 is interposed in the gap between the sandwiching plates 15a and 15b and the massage rollers 16L and 16R,
Friction resistance is applied to the rotation of the rollers 16L and 16R about the rotation axis 10. The hand holding portion 52 is formed of a cylindrical portion integrally formed on both left and right sides of the casing 53, and the user can massage the back by holding the cylindrical portion with both hands and pressing it against the back of another person.

In addition, the massage device 54 of this embodiment
As shown in FIG. 12, since the massage roller 16 can be placed on the floor or the like with the massage roller 16 facing upward, it can also be used as a small placement type massage device. 14 and 15 show a fourth embodiment of the present invention. Similarly to the first embodiment, the massage device of this embodiment also includes a stationary casing 2 having an opening 2A that opens upward, and a roller massage mechanism 4 housed in the casing 2. The massage device 1 of the mount type is different from the first embodiment in the following points.

That is, in the roller massage mechanism 4 of this embodiment, roller massage is performed on the affected part at the axially opposite end portions of the rotary shaft 10 where the pair of left and right massage rollers 16L and 16R are provided. A large number of mini-rollers 57 for carrying out are provided, and the mini-rollers 57 are provided at fixed intervals on a plurality of rotary shafts 58 fixed so as to surround the circumference of the rotary shaft 10. Therefore, if a calf of the foot is placed on both axial ends of the massage mechanism 4, in addition to massage by massaging by the massage roller 16, a large number of mini rollers 57 roll and massage the affected area. It can be performed.

Further, in the massage mechanism 4 in this case,
A driving unit 14 including a motor 31 and a speed reducer 32 is connected to the left end of the rotary shaft 10 and is housed in the left side portion of the casing 2. Further, the half-rotation clutch mechanism 21 is covered with a resin sleeve 59 having a massage protrusion 60 on the outer peripheral surface thereof, so that when the cover member 3 is bent into the casing 2, the half-rotation clutch mechanism 21 is caught. I try not to. 16 to 19 show a fifth embodiment of the present invention.

The massaging device 61 of this embodiment has a longitudinal dimension substantially corresponding to the back region of the human body and can lean against the wall surface W with its back surface facing the wall surface W side. Single casing 62
This casing 62 has a
The roller massage mechanism 4 is provided therein so as to be vertically movable. The casing 62 in this case is formed in a vertically long box shape having a vertically long opening portion 63 that opens to the front surface side, and as shown in FIG.
Alternatively, as shown in FIG. 19, it is possible to lean against the wall surface W of the backrest of the chair 64.

As described above, since the casing 62 is formed in a flat and vertically long box shape that can lean against the wall surface W,
By leaning against the wall surface W as shown in FIGS. 18 and 19 and using it, the back can be massaged over a wide range, as in the case of the chair-type massage device 43. On the other hand, unlike the chair-type massage device 43, since the casing 62 is formed into a flat and vertically long box-like shape, it can be stored in a narrow space such as a corner of a room or between furniture when it is unnecessary. A compact massage device having substantially the same function as the chair-type massage device 43 can be obtained at low cost.

As shown in FIG. 17, a moving means 65 for moving the roller massage mechanism 4 in the vertical direction is provided inside the casing 62. The moving means 65 is a pair of left and right guide rails 66 arranged on both sides of the casing 2 in the width direction, and guide rollers arranged at the four corners of the support frame 8 of the massage mechanism 4 and rotatably fitted into the guide rails 66. 67 and a feed screw shaft 69 inserted through a screw cylinder 68 fixed to the support frame 8.
And a moving motor 70 that drives the feed screw shaft 69.
And are equipped with.

The feed screw shaft 69 is rotatably and axially immovably supported in the substantially central portion of the casing 61, and the screw cylinder 68 is screwed onto the outer peripheral portion of the feed screw shaft 69. Therefore, when the feed screw shaft 69 is rotated by the moving motor 70, the support frame 8 moves up and down along the guide rail 66 via the screw cylinder 68, thereby changing the massage position by the massage rollers 16L and 16R. You can do it. A limit switch 71 for detecting the vertical movement limit of the massage mechanism 4 is provided at the upper and lower ends of the guide rail 66. Further, a guide shaft 73 around which the electric wire 72 of the motor 31 of the massage mechanism 4 is spirally wound is fixed to the left side of the left guide rail 66. Therefore, when the massage mechanism 4 repeatedly moves up and down, the electric wire 7
Even if 2 loosens in the casing 2, it is possible to prevent a wire breakage failure caused by the loosened electric wire 72 entering an unexpected direction.

Further, in this embodiment, since the massage motor 31 is projected to the opposite side (upper side in FIG. 15) of the moving motor 70, the dead space for avoiding the interference between the both motors 31 and 70. Is not required, and the vertical dimension of the casing 62 is compact. In the description of the second to fifth embodiments described above, for members having the same function or structure as in the case of the first embodiment, the same reference numerals as in the case of the first embodiment are attached to the drawings. , Redundant redundant description is omitted.

Each embodiment described in the present specification is an exemplification of the present invention and is not intended to limit the present invention.
That is, the scope of the present invention is shown by the claims described below, and all modifications and equivalents to the claims are included in the present invention. For example, as the structure for switching the posture of the massage roller 16, the rotary shaft 10 is provided with the dividing portion 10a and the half-rotating clutch mechanism 21 is used here. However, other mechanical switching structure or electromagnetic A conventional clutch mechanism, a manual switching mechanism, or the like may be adopted.

Further, the massage roller 16 can be modified in various shapes as long as the entire shape is substantially a disk shape, and is not limited to a simple disk shape, but an elliptical plate shape or a polygonal plate shape. It is also possible to adopt the one. Furthermore, the massage mechanism 4 of the present invention can be incorporated in a bed-type massage device.

[0061]

As described above, according to the present invention,
The holding means suppresses or regulates the relative rotation of both shaft parts and holds both massage rollers in a kneading position or a non-kneading position, so that the inclination direction of the rollers suddenly changes during massage and kneading. It is possible to prevent the posture or the non-rubbing posture from instantaneously collapsing, and it is possible to ensure a proper massage operation in either the rubbing posture or the non-rubbing posture.

[Brief description of drawings]

FIG. 1 is a front view of a roller massage mechanism as viewed from the direction of the line AA in FIG.

FIG. 2 is a side sectional view of the massage device of FIG. 3 as viewed from the left side.

FIG. 3 is a perspective view of a stationary massage device.

FIG. 4 is an exploded cross-sectional view of a roller.

FIG. 5 is an enlarged cross-sectional view of a half rotation clutch mechanism.

6 is a cross-sectional view taken along the line BB of FIG.

FIG. 7 is an enlarged cross-sectional view showing a modified example of the half rotation clutch mechanism.

FIG. 8 is an enlarged front view showing another modification of the half-rotation clutch function.

FIG. 9 is an operation explanatory view for showing a massage operation of the massage roller in the non-rubbing posture.

FIG. 10 is an operation explanatory view for showing a massage operation of the massage roller in a kneading posture.

FIG. 11 is a side view schematically showing a chair-type massage device.

FIG. 12 is a perspective view of a handheld massage device.

FIG. 13 is a front sectional view of a handheld massage device.

FIG. 14 is a perspective view of another stationary massage device.

FIG. 15 is a plan view showing the internal structure of another placement type massage device.

FIG. 16 is a perspective view of a leaning type massage device.

FIG. 17 is a front view showing an internal structure of a leaning-type massage device.

FIG. 18 is a side view showing an example of a usage state of a leaning type massage device.

FIG. 19 is a side view showing an example of a usage state of a leaning type massage device.

[Explanation of symbols]

1 Placement type massage device 2 casing 2A opening 4 Roller massage mechanism 10 rotation axis 10L first shaft 10R Second shaft part 14 Drive means 20 tubular member 21 Half rotation clutch mechanism 24 lateral groove 25 Stopper pin 26 Switching stage 37 Brake cylinder 37A rubber shoe 38 Brake member 39 holding means 40 Brake means 41 seat brake 42 Backrest 43 Chair type massage device 51 opening 52 Handheld unit 53 casing 54 Handheld massage device 57 Mini Roller 61 Stand-up massage device 62 casing 63 opening

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-9-66084 (JP, A) JP-A-5-111518 (JP, A) JP-A-7-213573 (JP, A) JP-A-61- 247455 (JP, A) JP-A-59-28963 (JP, A) Actual development 2-109628 (JP, U) JP-B 4-78307 (JP, B2) (58) Fields investigated (Int.Cl. ⁷ , DB name) A61H 15/00 A61H 7/00 A61H 39/04

Claims (18)

(57) [Claims] 1. A rotary shaft (10) having a pair of left and right first and second shaft parts (10L, 10R) arranged coaxially with each other, and a rotary shaft (10) in the middle of each shaft part (10L, 10R). A pair of left and right massage rollers (16L, 16R) respectively inclined with respect to the axial direction, and drive means (14) for rotationally driving the rotary shaft (10).
And by rotating the both shaft portions (10L, 10R) relative to each other, the pair of left and right massage rollers (16L,
16R) in a rubbing posture in which the inclination directions are opposite to each other,
Relative rotation between the switching means (26) for switching to one of the non-rubbing postures in which the inclination directions are the same and both shaft portions (10L, 10R) that have been switched by the switching means (26) are suppressed or A roller massage mechanism comprising: a holding unit (39) that regulates and holds both the massage rollers (16L, 16R) in a kneading position or a non-kneading position. 2. The roller massage mechanism according to claim 1, wherein the switching means (26) includes the first shaft portion (10L).
And the second shaft portion (10R) are constituted by a half-rotation clutch mechanism (21) which regulates a relative rotation range to approximately half rotation. 3. The roller massage mechanism according to claim 2, wherein the half rotation clutch mechanism (21) includes the second shaft portion (1).
A tubular member (20) coaxially and non-rotatably fixed to the end portion of (0R) and provided with a lateral groove (24) having a circumferential length of half a turn on the outer peripheral portion; The end portion of the first shaft portion (10L) coaxially and rotatably inserted in the (20) is radially outwardly projected, and the protruding end portion is housed in the lateral groove (24). The stopper pin (25) is provided. 4. The roller massage mechanism according to claim 3, wherein the holding means (39) includes the shaft portions (10L, 10L).
Brake member (3) that adds frictional resistance to the relative rotation between
8). 5. The roller massage mechanism according to claim 4, wherein the brake member (38) has a base end portion coaxially fixed to the first shaft portion (10L) and non-rotatably fixed. , A brake cylinder body (37) whose inner peripheral surface is slidably contacted with the cylinder member (20) of the half-rotation clutch mechanism (21)
Consists of. 6. The roller massage mechanism according to claim 5, wherein a rubber shoe (3) is provided between the tubular member (20) and the brake tubular body (37) to increase frictional resistance therebetween.
7A) is interposed. 7. The roller massage mechanism according to claim 2, wherein the half rotation clutch mechanism (21) includes the first shaft portion (1).
The first clutch body (81) fixed to the end of the first shaft (0L) and the end of the second shaft (10R) are rotatably and axially movable within a half rotation range. The second clutch body (82) that is detachably engaged with the one clutch body (81), and the second clutch body (82) is the first clutch body (81) when the rotation shaft (10) is normally or reversely rotated. ), And cam means (83) for engaging again with the clutch body (81). 8. The roller massage mechanism according to claim 7, wherein the holding means (39) includes the clutch bodies (81, 8).
The meshing position of 2) is 1 in the circumferential direction around its axis.
The clutch teeth (84) are formed at the meshing portions of the two clutch bodies (81, 82) at two positions separated by 80 degrees. 9. The roller massage mechanism according to claim 1, wherein the pair of left and right massage rollers (16L, 16R).
The rotating shaft (10) is such that the part closest to the partner massage roller (16R, 16L) is farther from the rotating shaft (10) than the part farthest from the roller (16R, 16L). It is provided eccentrically with respect to. 10. The roller massage mechanism according to claim 1, wherein the drive means (14) rotates the pair of left and right massage rollers (16L, 16R) when the massage rollers (16L, 16R) are in a non-rubbing position. It has a function of changing the rotation speed of the shaft (10) in at least two stages. 11. The roller massage mechanism according to claim 1, wherein the pair of left and right massage rollers (16L, 16R) are rotatably connected to the shaft portions (10L, 10R). , This pair of left and right massage rollers (16L, 16
Brake means (40) is provided to add frictional resistance to the relative rotation of R) with respect to the respective shaft portions (10L, 10R). 12. The roller massage mechanism according to any one of claims 1 to 11, wherein both ends in the axial direction of the rotary shaft (10) are provided in the axial direction rather than a portion where the pair of left and right massage rollers (16L, 16R) are provided. A large number of mini rollers (57) for performing a roller massage on the affected area are provided on the side portion. 13. A stationary casing (2) having an opening (2A) opening upward, and the casing so that the pair of left and right massage rollers (16L, 16R) correspond to the opening (2A). A roller-type massaging device (4) according to any one of claims 1 to 12, which is housed in (2), and a stationary massaging device. 14. A handheld casing (53) having an opening (51) opening to the front side and having handholds (52) on both left and right sides, and the pair of left and right massage rollers (16L, 16R). A handheld massage device comprising: the roller massage mechanism (4) according to any one of claims 1 to 12, which is housed in the casing (53) so as to correspond to the opening (2A). 15. A stand-alone unit having a longitudinal dimension substantially corresponding to a back region of a human body and capable of leaning against the wall surface (W) with its back surface facing the wall surface (W). Of the casing (62), which is a leaning type casing (62) having an opening (63) opening to the front side, and the pair of left and right massage rollers (16L, 16R) correspond to the opening (63). A roller massage mechanism (4) according to any one of claims 1 to 12, which is housed in the casing (62) as described above, and a leaning type massage device comprising: 16. The massage device according to claim 15, further comprising moving means (65) for moving the roller massage mechanism (4) in a vertical direction. 17. A seat portion (41) and a backrest portion (4) provided upright on an end portion of the seat portion (41).
2) and the pair of left and right massage rollers (16L, 16R) are housed inside the backrest portion (42) so as to correspond to the center portion in the width direction of the backrest portion (42). 1
2. A chair-type massage device comprising: the roller massage mechanism (4) according to any one of 2 above; 18. The massage device according to claim 17, further comprising moving means for moving the roller massage mechanism (4) in a vertical direction.