JP7176901B2 - massage device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a massage device configured so that a massage position can be selected according to user's preference.

Conventionally, a backrest type massage device that treats the user's back, a pillow type massage device that treats the back of the user's head in a supine posture, and a neck that treats the neck and shoulders along the user's neck. Pillow-type massage devices and the like have been provided.

JP 2015-181944 A JP 2016-36712 A JP 2016-123851 A

A massage unit built into a massage device is known to enable various types of treatment such as tapping, kneading, and grasping. A pair of massage units are spaced apart from each other to the left and right.

However, in a conventional massage device, especially a small-sized handy type massage device, a pair of built-in massage units have a fixed distance apart from each other, so they do not correspond to the difference in size of the user's physique. and that it does not match the part of the body that the user needs to treat from time to time. Therefore, there is a long-awaited massage device that solves this problem.

By the way, this problem can be solved by making it possible to change the distance between the massage units. The increase in the number of parts not only causes a marked increase in cost, but also causes a problem in that the size of the massage device increases, making it difficult to construct a handy type massage device.

Therefore, the present invention solves the above problems by configuring the kneading balls included in the massage unit so that the positions of the kneading balls can be changed, and the structure is simple and compact. To provide a massage device that can be realized at a low cost.

Therefore, what the present invention constitutes as a means is a massage device comprising a massage unit composed of a vertical shaft driven and rotated by a driving source and a treatment mechanism provided on the vertical shaft, wherein the treatment mechanism is a cam means that is fixed to the vertical shaft and rotates; and a treatment means that has an annular receiving surface along the inclined cam surface of the cam means and is rotatably fitted around the vertical shaft. , posture holding means for holding the seat portion so as not to rotate around the vertical axis; Concerning the direction S2, it is composed of a first treatment section composed of kneading balls provided on a pedestal extending from the seat in the first direction S1, and a treatment section having an arm extending from the seat in the second direction S2. The first treatment unit includes a holding shaft member provided at a position eccentric from the center of the kneading balls and inserted into the holding hole of the pedestal, and the holding shaft It is configured to be movable between the first kneading position and the second kneading position through rotation of the material in the direction around the axis, and the kneading balls cannot be rotated in the state of being positioned at the first kneading position and the second kneading position. By selecting the position of the kneading balls from the first kneading position and the second kneading position, the size of the gap between the kneading balls and the second treatment section is changed. The point is that it is configured to

The treatment portion of the second treatment portion is formed into a finger shape, and during the rotation of the cam means, the rotation locus of the finger-shaped second treatment portion is larger than the rotation locus of the first treatment portion. is preferred. The locking mechanism includes locking means provided on the kneading balls including holding shafts, and locking the locking means when the kneading balls are moved to the first kneading position and the second kneading position. It is preferable that it is constituted by a means to be engaged provided on a pedestal portion including a holding hole.

In the embodiment of the present invention, a pair of massage units equipped with a kneading mechanism are arranged apart from each other. The unit is configured so that the distance between kneading balls can be changed freely.

According to the present invention, with a simple structure, by changing the position of the kneading balls 29 constituting the kneading mechanism 27 between the first kneading position F1 and the second kneading position F2, the kneading balls 29 and the second treatment section It is possible to change the size of the gap between 23B, and it is possible to change the feeling of massaging the user's body .

1 shows one embodiment of the present invention, (A) is a plan view, and (B) is a front view. FIG. 4 is an explanatory diagram illustrating the relationship between the trapezius muscle as a treatment site and a massage unit; 1 is an exploded perspective view of a drive source, vertical shaft and transmission mechanism for one embodiment of the present invention; FIG. 1 is a perspective view showing a massage unit in an exploded state in relation to one embodiment of the present invention; FIG. 1 is a front view showing an arrangement form of massage units in one embodiment of the present invention. FIG. FIG. 4 is a cross-sectional view showing the upper massage unit in an exploded state; FIG. 6 is a cross-sectional view taken along the line AA in FIG. 5, and is a cross-sectional view showing a state in which the inclined cam surface of the cam means is inclined downward toward the left outer side with respect to the action of the upper massaging units arranged on the left and right. . FIG. 8 is a cross-sectional view showing a state in which the cam means is rotated 180 degrees from the state shown in FIG. 7 so that the inclined cam surfaces are inclined upward toward the left and right outer sides; FIG. 4 is a cross-sectional view showing the lower massage unit in an exploded state; 6A is a cross-sectional view taken along the line BB of FIG. 5 regarding the action of the lower massage unit, where (A) is a cross-sectional view showing a state in which the inclined cam surface of the cam means is inclined upward toward the lower side; ) is a cross-sectional view showing a state in which the cam means is rotated by 180 degrees so that the inclined cam surface is inclined downward. FIG. 10 is an explanatory diagram showing movement trajectories of the treatment portions in the upper massage unit and the lower massage unit when the cam means is rotated by rotating the vertical shaft; FIG. 10 is an explanatory diagram showing the action of each massage unit when the drive source is rotated forward; FIG. 10 is an explanatory diagram showing the action of each massage unit when the drive source is reversed; Regarding the kneading mechanism in the embodiment , the driving body and the kneading balls are shown in a separated state, (A) is a perspective view, and (B) is a cross-sectional view. It shows a method for moving the kneading balls between the first kneading position and the second kneading position, (A) is a cross-sectional view showing the state where the locking mechanism is locked at the first kneading position, (B ) is a sectional view showing a state in which the locking of the locking mechanism is released, and (C) is a sectional view showing a state in which the locking mechanism is locked at the second kneading position. FIG. 4 is a cross-sectional view showing an example in which the distance between the centers of the massaging balls is set to be small with respect to the positions of the massaging balls between the left and right upper massage units. Fig. 10 is a cross-sectional view showing an example in which the distance between the centers of the massaging balls is set large with respect to the positions of the massaging balls between the left and right upper massage units.

Preferred embodiments of the present invention will be described in detail below with reference to the drawings.

In one embodiment shown in FIGS. 1 to 17, the massage device 1 is of the neck pillow type, and the treatment portion of the massage unit 3 can move along a predetermined trajectory while changing the pressing force. Thereby, it is configured to suitably massage a treatment site covering a wide area range such as the trapezius muscle.

As shown in FIG. 1, the massage device 1 has four massage units 3 on the front side of the body 2. The body 2 is covered with a pad 4 from the back side, and the left and right sides of the pad 4 are covered with grip portions. 5 and 5 are extended. Accordingly, the user holds the massage unit 3 facing the neck, shoulders, and shoulder blades by placing the massage device 1 under the back of the body and grasping the grips 5, 5 with both hands. and massage the trapezius muscles.

In the illustrated embodiment, the left upper massage unit 3UL and left lower massage unit 3DL, and the right upper massage unit 3UR and right lower massage unit 3DR are symmetrically positioned on both sides of the center line C of the body. are placed. As a result, as shown in FIG. 2, among the upper fibers M1, the middle fibers M2 and the lower fibers M3 of the trapezius muscle, the upper massaging units 3UL and 3UR are at least the upper fibers M1 (preferably the upper fibers M1 and the middle fibers M2). both) and the lower massage units 3DL, 3DR are configured to massage at least the middle fibers M2 (preferably both the middle fibers M2 and the lower fibers M3). In the following description, when the left upper massage unit 3UL and the right upper massage unit 3UR are not distinguished, they are simply referred to as the upper massage unit 3U, and the left lower massage unit 3DL and the right lower massage unit 3DR are not distinguished. Sometimes referred to simply as lower massage unit 3D. Further, when the upper massage unit 3U and the lower massage unit 3D are not distinguished from each other, they are simply referred to as the massage unit 3.

As shown in FIGS. 3 and 4, the machine body 2 is composed of a housing 2a and a cover 2b. A drive source 6 consisting of an electric motor is housed in the center of the housing 2a, and gears are symmetrically arranged on both sides of the housing 2a. A transmission mechanism 7L, 7R consisting of a train is arranged. The left and right transmission mechanisms 7L and 7R include a reduction gear 8 that meshes with a worm provided on the drive shaft 6a of the drive source 6 from both left and right sides, an upper drive gear 9 that meshes with the reduction gear 8, and the drive shaft 6a. It is composed of a lower drive gear 11 that meshes with the upper drive gear 9 via a transmission gear 10. An upper vertical shaft 12U is provided at the center of the upper drive gear 9, and a lower vertical shaft 12D is provided at the center of the lower drive gear 11. ing. Therefore, the four vertical shafts that constitute the power sources of the pair of upper massage units 3U and the pair of lower massage units 3D described above, that is, the left and right upper vertical shafts 12UL and 12UR and the left and right lower vertical shafts 12DL and 12DR. They are arranged symmetrically. In the following description, when the left upper vertical shaft 12UL and the right upper vertical shaft 12UR are not distinguished, they are simply referred to as the upper vertical shaft 12U, and the left lower vertical shaft 12DL and the right lower vertical shaft 12DR are not distinguished. Sometimes referred to simply as the lower vertical axis 12D. Further, the upper vertical shaft 12U and the lower vertical shaft 12D are simply referred to as the vertical shaft 12 when not distinguished.

Therefore, when the drive shaft 6a of the drive source 6 rotates, the left upper vertical shaft 12UL and the right upper vertical shaft 12UR rotate in opposite directions, and the left lower vertical shaft 12DL and the right lower vertical shaft 12DR rotate. are configured to rotate in opposite directions to each other.

The upper vertical shaft 12U and the lower vertical shaft 12D have the transmission gear 10 interposed between the upper driving gear 9 and the lower driving gear 11, and by making the number of teeth of the three gears the same, they are mutually identical. They are configured to rotate in the same direction at the rotational speed.

When the cover 2b is attached while the drive source 6 and the transmission mechanisms 7L and 7R are housed in the housing 2a, the vertical shaft 12 protrudes from the cover 2b as shown in FIG. Therefore, by providing a treatment mechanism 13 on each vertical shaft 12, the massage unit 3 described above is configured. Therefore, when the massage device 1 is used as shown in FIG. 1, the protruding direction of the vertical shaft 12 is directed toward the treatment site of the body, and the treatment mechanism 13 provided on the vertical shaft 12 faces along the treatment site of the body. be done.

The treatment mechanism 13 is composed of cam means, treatment means, and posture holding means, which will be described later. By assembling these means, as shown in FIG. The left upper and lower treatment mechanisms 13UL and 13DL forming the upper and lower massage units 3UL and 3DL and the right upper and lower treatment mechanisms 13UR and 13DR forming the right upper and lower massage units 3UL and 3DR are arranged symmetrically. In the following description, when the left upper treatment mechanism 13UL and the right upper treatment mechanism 13UR are not distinguished, they are simply referred to as the upper treatment mechanism 13U, and the left lower treatment mechanism 13DL and the right lower treatment mechanism 13DR are not distinguished. Sometimes simply referred to as the lower treatment mechanism 13D. Further, the upper treatment mechanism 13U and the lower treatment mechanism 13D are simply referred to as the treatment mechanism 13 when not distinguished from each other.

The upper treatment mechanism 13U shown in FIG. 6 and the lower treatment mechanism 13D shown in FIG. 14 and posture holding means 16 .

The cam means 14 has an annular inclined cam surface 17 which intersects the axis of the vertical shaft 12 while being externally secured to the vertical shaft 12 . In the illustrated embodiment, the cam means 14 is composed of an upper cam member 14a fitted over the vertical shaft 12 and a lower cam member 14b fitted over the vertical shaft 12. It forms an upper cam surface 17a and a lower cam surface 17b obliquely crossing the axis of .

The upper cam member 14a and the lower cam member 14b are arranged so that the upper cam surface 17a and the lower cam surface 17b face each other in parallel with a space therebetween, and the two cam members 14a and 14b cannot rotate relative to each other. Connecting and fixing means 18a and 18b are provided for fixing, and are fixed to the vertical shaft 12 in a state in which the separation space is formed. In the illustrated embodiment, the upper cam member 14a is secured by the head of a bolt 19 threaded onto the shaft end of the vertical shaft 12, and the lower cam member 14b is inserted across the cam member and the vertical shaft. It is secured by a pin 20 which is attached to the connector, but is not limited to these configurations. In short, the upper cam member 14a and the lower cam member 14b are configured to rotate together with the vertical shaft 12 while the upper cam surface 17a and the lower cam surface 17b face each other in parallel with a space therebetween. Good if

The treatment means 15 includes a seat portion 21 rotatably fitted around the vertical shaft 12 , an arm portion 22 extending from the seat portion 21 toward the user's treatment site, and a treatment portion 23 provided at the tip of the arm portion 22 . An annular receiving surface 24 is formed on the seat portion 21 along the inclined cam surface 17 of the cam means 14 .

In the illustrated embodiment, the seat portion 21 is interposed in the space formed between the upper cam surface 17a and the lower cam surface 17b described above, and has an upper receiving surface 24a along the upper cam surface 17a and a lower portion. A lower receiving surface 24b is formed along the cam surface 17b.

When the vertical shaft 12 is rotated as described above, the cam means 14 is rotated together with the vertical shaft 12, but the seat portion 21 of the treatment means 15 is configured so as not to be rotated together with the vertical shaft 12 and the cam means. Therefore, the posture holding means 16 is provided.

The attitude holding means 16 consists of a holding piece 25 extending from the seat portion 21 and a restraining member 26 fixed to the body 2 to hold the holding piece 25 so as not to rotate around the vertical shaft 12 . It is configured. As a result, the rotation of the seat portion 21 is prevented. However, as will be described later, the rotating inclined cam surface 17 slides on the receiving surface 24, so that the holding piece 25 along with the seat portion 21 is twisted. Therefore, it is preferable that the restraining member 26 is formed in a pocket shape that holds the holding piece 25 so as to allow such movement.

As shown in the figure, the treatment means 15 of the upper treatment mechanism 13U and the treatment means 15 of the lower treatment mechanism 13D are configured such that the arm portion 22 and the treatment portion 23 have different forms. Regarding this point, as shown in FIG. 5, with respect to the horizontal Y-axis orthogonal to the center line C forming the X-axis, the direction from each massage unit 3 toward the center line C is the Y1 direction, and the opposite direction is the Y2 direction. , are described below.

(Upper Treatment Mechanism) The treatment means 15 of the upper treatment mechanism 13U includes, as shown in FIGS. A second arm portion 22B extending in a second direction S2, which is an oblique downward direction in the Y2 direction, is provided, and a first treatment portion 23A and a second treatment portion 23B are provided at the tip of each arm portion.

The first arm portion 22A is inclined in the direction S1 from the perpendicular to the upper receiving surface 24a of the seat portion 21, and the hemispherical top surface of the kneading ball attached to the tip of the first arm portion 22A facing the direction of extension of the first arm portion 22A, a first treatment portion 23A is formed.

On the other hand, the second arm portion 22B includes a base portion 22a that extends in the radial direction of the seat portion 21, and an extension portion 22b that bends from the base portion 22a and extends toward the treatment site of the user. It is configured in a finger shape in which the second treatment portion 23B is formed by rounding the tip.

7, 8 and 11 show the action of the upper treatment mechanism 13U when the lowest point V of the inclined cam surface 17 rotates counterclockwise along with the vertical shaft 12. FIG. As shown in FIG. 11, when the lowest point V is positioned at the point P1 in the direction S2, the seat portion 21 is tilted downward toward the direction S2 as indicated by an angle θ1 as shown in FIG. It is said that At this time, the top surface of the first treatment section 23A along with the first arm section 22A is inclined in the direction S1 in the Y2 direction. The finger-shaped second arm portion 22B is far away from the axis of the vertical shaft 12 as indicated by a distance L1, and the second treatment portion 23B is at a relatively low height (close to the fuselage) as indicated by a height H1. are positioned.

As shown in FIG. 11, due to the rotation of the vertical shaft 12, the lowest point V of the inclined cam surface 17 moves counterclockwise from the point P1 to points P2, P3 and P4 in order. FIG. 8 shows a state in which it has rotated 180 degrees from the point P1 and is positioned at a point P3. At this time, the seat portion 21 is inclined upward toward the direction S1 as indicated by an angle θ2. As a result, the posture of the top surface of the first treatment section 23A along with the first arm section 22A changes toward the Y1 direction. The finger-shaped second arm portion 22B approaches the axis of the vertical shaft 12 as indicated by a distance L2, and the second treatment portion 23B rises to a higher position (away from the fuselage) as indicated by a height H2. do.

When the lowest point V of the inclined cam surface 17 moves to the point P2 or P4 between the points P1 and P3, the seat portion 21 is changed in posture so as to be inclined downward toward the lowest point V. As a result, as shown by the dashed line in FIG. 11, the first treatment section 23A and the second treatment section 23B change the distance L and the height H while the inclined cam surface 17 rotates once with the vertical shaft 12. Circular motion or elliptical motion is performed while moving on a predetermined locus. Therefore, a desired area of the upper fiber M1 of the trapezius muscle shown in FIG. 2 can be massaged in a planar manner.

Therefore, in the upper treatment mechanism 13U, the first treatment section 23A provided on the first arm section 22A constitutes a kneading mechanism 27 by functioning as kneading balls for treating the user's body. Details of this point will be described later.

(lower treatment mechanism)
Next, regarding the X axis, the upward direction is X1 and the downward direction is X2, and the treatment means 15 of the lower treatment mechanism 13D will be described. As shown in FIGS. 10 and 11, the arm portion 22 of the treatment means 15 constitutes a third arm portion 22C which is positioned in the downward direction X2 of the seat portion 21 and stands substantially perpendicularly from the upper receiving surface 24a. A third treatment section 23C is formed by making the hemispherical top surface of the kneading ball attached to the tip of the arm face upward in the direction X1.

In the illustrated embodiment, the lowest point V of the inclined cam surface 17 of the upper treatment mechanism 13U is positioned at the point P1 in the direction S2 as shown in FIG. 11 with respect to the upper treatment mechanism 13U and the lower treatment mechanism 13D. At this time, the lowest point W of the inclined cam surface 17 of the lower treatment mechanism 13D is set to be positioned at the point Q1 toward the upward direction X1.

When the lowest point W of the inclined cam surface 17 is located at the point Q1 in the upward direction X1, the seat portion 21 is inclined upward in the downward direction X2 at an angle θ3 as shown in FIG. 10(A). In this posture, the third treatment section 23C is inclined in the upward direction X1 together with the third arm section 22C.

As shown in FIG. 11, due to the rotation of the vertical shaft 12, the lowest point W of the inclined cam surface 17 moves from the point Q1 in the counterclockwise direction to points Q2, Q3 and Q4 in sequence. When the seat 21 is rotated 180 degrees from the point Q1 and is positioned at the point Q3, the seat 21 is tilted downward toward the downward direction X2 as indicated by an angle θ4, as shown in FIG. 10(B). , tilts the third treatment portion 23C together with the third arm portion 22C in the downward direction X2.

When the lowest point W of the inclined cam surface 17 moves to a point Q2 or a point Q4 between the points Q1 and Q3, the seat portion 21 is changed in posture so as to be inclined downward toward the lowest point W. As a result, as shown by the dashed line in FIG. 11, while the inclined cam surface 17 rotates once with the vertical shaft 12, the third treatment section 23C changes its height and moves on a predetermined locus in a circle. Exercise or elliptical exercise. Therefore, it is possible to planarly massage a desired range of the middle fibers M2 and the lower fibers M3 of the trapezius muscle shown in FIG.

(Massage example)
Although not shown, the massage device 1 includes a control circuit for controlling the electric motor that constitutes the drive source 6, and is capable of switching between forward and reverse rotation of the drive shaft 6a. It is also possible to perform intermittent rotation during reversal.

(Massage by forward rotation)
FIG. 12 shows the effect of massaging the trapezius muscle by continuously rotating the drive shaft 6a of the drive source 6 forward.

At this time, as indicated by the arrows in the drawing, the left upper massage unit 3UL and the left lower massage unit 3DL circularly move the first treatment section 23A, the second treatment section 23B, and the third treatment section 23C clockwise. (or elliptical motion), and the right upper massage unit 3UR and the right lower massage unit 3DR circularly move (or elliptical motion).

As described above, while the lowest point V of the inclined cam surface 17 rotates 360 degrees from the point P1, the left and right first treatment portions 23A, 23A face each other toward the center line C while gradually increasing the pressing force. After massaging M1, the pressing force is gradually reduced when moving in the Y2 direction, and at the same time, the left and right second treatment portions 23B move upward (X1) from the outside (Y2) to the inside (Y1). to the lower side (X2), the pressing force is gradually increased, and thereafter, the pressing force is gradually reduced while moving.

While the lower massaging unit 3DL on the left side and the lower massaging unit 3DR on the right side are rotating 360 degrees from the point Q1 of the lowest point W of the inclined cam surface 17 as described above, after reducing the pressing force during the first half rotation, It moves while gradually increasing the pressing force during the next half rotation.

When the second treatment section 23B of the upper massage unit 3U and the third treatment section 23C of the lower massage unit 3D perform the next half rotation after each half rotation, they move vertically facing each other as indicated by the arrows in the figure. Then, the central fiber M2 is strongly grasped and kneaded.

When the control circuit intermittently rotates the drive shaft 6a in the forward direction, the second treatment section 23B and the third treatment section 23C temporarily stop the central fibers M2 when they are grasped. The kneading effect is greatly improved.

(Massage by inversion)
FIG. 13 shows the effect of massaging the trapezius muscle by continuously reversing the drive shaft 6a of the drive source 6. FIG.

At this time, as indicated by the arrows in the drawing, the left upper massage unit 3UL and the left lower massage unit 3DL rotate the first treatment section 23A, the second treatment section 23B, and the third treatment section 23C in a counterclockwise direction. The upper massage unit 3UR on the right side and the lower massage unit 3DR on the right side are exercised (or elliptical motion), and circularly move (or elliptical motion).

In this case, the lowest point V of the inclined cam surface 17 of the upper massage unit 3U described above rotates sequentially from point P1 via points P4, P3, and P2, and the lowest point W of the inclined cam surface 17 of the lower massage unit 3D is , sequentially from point Q1 through points Q4, Q3, and Q2.

The left and right first treatment portions 23A, 23A of the upper massage unit 3U face each other toward the center line C while gradually increasing the pressing force to massage the upper fibers M1, and then gradually press while moving in the Y2 direction. The pressure is reduced, and at the same time, the pressing force is gradually increased when the left and right second treatment units 23B move from the outer side (Y2) to the inner side (Y1) from the lower side (X2) to the upper side (X1), and then moves while gradually reducing the pressing force.

When the left and right third treatment sections 23C, 23C in the lower massage unit 3D finish the first half rotation and start the next half rotation,
After massaging the middle fibers M2 and the lower fibers M3 facing each other while gradually increasing the pressing force toward the center line C, the pressing force is gradually reduced when moving in the X2 direction.

The second treatment section 23B of the upper massage unit 3U and the third treatment section 23C of the lower massage unit 3D move from above and below as indicated by the arrows in the figure while the third treatment section 23C is moving in the X2 direction. tracks and moves in the X2 direction while increasing the pressing force, and moderately grips and kneads the middle fibers M2.

When the control circuit intermittently rotates the driving shaft 6a in the forward direction, the first treatment portions 23A, 23A of the upper massage unit 3U are close to each other, or the third treatment portions 23C, 23C of the lower massage unit 3D are intermittently rotated. By including the action of pausing when the trapezius muscles come close to each other, the kneading effect of pressing the trapezius muscles from opposite directions toward the center line C is remarkably improved.

(Configuration of kneading mechanism)
Details of the kneading mechanism 27 will be described with reference to FIGS. 14 to 17. FIG.

As shown in FIGS. 14 and 15, the kneading mechanism 27 uses the seat portion 21 of the upper treatment mechanism 13L, which is driven by the vertical shaft 12, as a driving body 28, and attaches the driving body 28 to the first arm portion 22A. It is configured by providing one treatment section 23A, and by performing circular motion or elliptical motion while moving on a predetermined locus as described above, the first treatment section 23A is used as a massaging ball 29 to massage the user's body. It is configured to give a massage.

The first arm portion 22A is composed of a pedestal portion 30 of the driving body 28 formed upward from a position deviated from the central axis Z1 centered on the vertical axis 12 between the driving body 28 and the kneading balls 29. ing. In the illustrated example, the first arm portion 22A is constituted by the boss portion 31 formed on the lower side of the kneading balls 29 and the base portion 30, but it is not limited to this.

In the kneading balls 29, a holding shaft member 32 is provided vertically from the boss portion 31 formed at a position deviated from the central axis Z2 of the kneading balls, and the holding shaft member 32 is provided through the base portion 30. It is attached by being slidably and rotatably inserted into the holding hole 33 .

Therefore, the kneading balls 29 have a first half portion 29a formed so as to be located on the large radius with respect to the radius centered on the rotation axis Z3 of the holding shaft member 32 deviated from its own central axis Z2. , has a second half 29b formed to overlie the minor radius. Therefore, when the kneading balls 29 are rotated halfway around the rotation axis Z3 of the holding shaft member 32, as shown in FIGS. is flipped so that it is replaced by

Therefore, by rotating the holding shaft member 32, the kneading balls 29 move to the first kneading position F1 with the first half 29a facing left as shown in FIG. 2, the first half portion 29a is configured to be movable between the second kneading position F2 facing right in the drawing, and positioned at each of the first kneading position F1 and the second kneading position F2. A locking mechanism 34 is provided for non-rotatable locking.

The locking mechanism 34 is composed of a locking means 35 and a locked means 36 that locks the locking means 35 when the kneading balls 29 are moved to the first kneading position F1 and the second kneading position F2. When the holding shaft member 32 is slid from the holding hole 33 in the pulling direction, the engagement between the locking means 35 and the locked means 36 is released, and the holding shaft member 32 is inserted into the holding hole 33 . The locking means 35 and the locked means 36 are configured to be locked when sliding in the direction.

In the illustrated embodiment, the locking means 35 is composed of vertical rib-like fins provided on the outer periphery of the holding shaft member 32, but is composed of protrusions provided on the boss portion 31 and part of the massaging balls 29. In short, it is sufficient if it is provided on the side of the kneading balls 29 including the holding shaft member 32 .

Further, in the illustrated embodiment, the engaged means 36 is configured by a groove formed in the centrifugal direction from the holding hole 33, but may be configured by a recess or the like formed in the pedestal 30. In short, Any one provided on the side of the pedestal portion 30 including the holding hole 33 may be used.

Incidentally, in the illustrated example, the locking mechanism 34 is composed of male and female means for fitting and locking each other, the male means forms the locking means 35, and the female means forms the locked means 36. , may be configured to be opposite to each other.

The locked means 36 are configured so that the locking means 35 can be locked corresponding to the first kneading position F1 and the second kneading position F2 of the kneading balls 29, so that the first locked means 36a and the second It is composed of a plurality of locked means having locked means 36b.

Therefore, when the kneading balls 29 are moved to the first kneading position F1 and the second kneading position F2, the locking means 35 is always locked to the locked means 36, so that the holding shaft member 32 is held. A spring 37 is provided to elastically bias the hole 33 in the insertion direction. In the example shown in the figure, a coil spring is externally inserted on the insertion shaft portion of the holding shaft member 33 inserted through the holding hole 33, and an end fitting 38 that serves both as a retaining member for the holding shaft member 33 and a spring receiving member is held. It is attached to the shaft end of the shaft member 33 .

(Action of kneading mechanism)
FIG. 15 shows how the user moves the kneading balls 29 between the first kneading position F1 and the second kneading position F2. In the state shown in FIG. 15(A), the kneading balls 29 are positioned at the first kneading position F1, the holding shaft member 32 is pulled in the insertion direction of the holding hole 33 by the spring 37, and the locking means 35 is moved to the first position. It is locked to the locked means 36a. From this state, as shown in FIG. 15(B), when the holding shaft member 32 is pulled out from the holding hole 33 against the spring 37 together with the kneading balls 29, the holding shaft member 32 slides and engages the locking means. 35 is released from the first locked means 36a to release the locked state, thereby allowing the holding shaft member 32 to rotate freely. Therefore, the kneading balls 29 can move toward the second kneading position F2 by rotating together with the holding shaft member 32 around the rotation axis Z3. Therefore, when the pulling force is released after moving to the second kneading position F2, the holding shaft member 32 is pulled in the insertion direction by the spring 37 as shown in FIG. It locks on the locking means 36b. Thereby, the kneading balls 29 are fixed at the second kneading position F2.

As shown in FIGS. 16 and 17, by selecting the position of the kneading balls 29 from the first kneading position F1 and the second kneading position F2 between the left upper massage unit 3UL and the right upper massage unit 3UR, , the distance between the kneading balls 29, 29 between the left and right units can be changed.

In the case of FIG. 16, between the left and right upper massage units 3UL, 3UR, the kneading balls 29, 29 are fixed at the first kneading position F1 so that the first half portions 29a, 29a face each other. By selecting , the distance LS between the centers of the kneading balls 29, 29 can be set small.

In the case of FIG. 17, between the left and right upper massage units 3UL, 3UR, the kneading balls 29, 29 are fixed at the second kneading position F2 so that the second halves 29b, 29b face each other. By selecting , the distance LL between the centers of the kneading balls 29, 29 can be set large.

Although not shown, one kneading ball 29 between the left and right upper massage units 3UL and 3UR is positioned at the first kneading position F1, and the other kneading ball 29 is positioned at the second kneading position F2. can also be used.

Furthermore, in the case of the massage device 1 of the first embodiment, the upper massage unit 3U is configured to have the second treatment portion 23B fixed to the seat portion 21, so the position of the massaging balls 29 is set to the first massaging position. By selecting from F1 and the second massaging position F2, it is possible to change the size of the gap between the massaging balls 29 and the second treatment section 23B, thereby making it possible to change the feeling of massaging the user's body. .

1 massage device 2 body 2a housing 2b cover 3 massage unit 3U upper massage unit 3UL left upper massage unit 3UR right upper massage unit 3D lower massage unit 3DL left lower massage unit 3DR right lower massage unit 4 pad 5 grip 6 Drive source 6a Drive shafts 7L, 7R Transmission mechanism 8 Reduction gear 9 Upper drive gear 10 Transmission gear 11 Lower drive gear 12 Vertical shaft 12U Upper vertical shaft 12UL Left upper vertical shaft 12UR Right upper vertical shaft 12D Lower vertical shaft 12DL Left Lower vertical shaft 12DR Right lower vertical shaft 13 Treatment mechanism 13U Upper treatment mechanism 13UL Left upper treatment mechanism 13UR Right upper treatment mechanism 13D Lower treatment mechanism 13DL Left lower treatment mechanism 13DR Right lower treatment mechanism 14 Cam means 14a Upper cam Member 14b Lower cam member 15 Treatment means 16 Posture control means 17 Inclined cam surface 17a Upper cam surface 17b Lower cam surfaces 18a, 18b Connecting and fixing means 19 Bolt 20 Pin 21 Seat 22 Arm 22A First arm 22a Base 22b Extension 22B Second arm portion 22C Third arm portion 23 Treatment portion 23A First treatment portion 23B Second treatment portion 23C Third treatment portion 24 Receiving surface 24a Upper receiving surface 24b Lower receiving surface 25 Holding piece 26 Restraining member 27 Kneading mechanism 28 Drive Body 29 Kneading ball 29a First half 29b Second half 30 Pedestal 31 Boss 32 Holding shaft 32a Rotating shaft 33 Holding hole 34 Locking mechanism 35 Locking means 36 Locked means 36a First locked Stop means 36b Second locked means 37 Spring 38 End fitting 39a Casing 39b Lid cover 40 Electric motor 41 Reduction mechanism 42 Drive shaft

Claims (4)

A massage device comprising a massage unit composed of a vertical shaft (12) driven and rotated by a drive source (6) and a treatment mechanism (13) provided on the vertical shaft,
The treatment mechanism (13) has cam means (14) fixed to and rotating on the vertical shaft (12), and an annular receiving surface (24) along the inclined cam surface (17) of the cam means. Composed of treatment means (15) having a seat portion (21) rotatably fitted around the vertical axis, and posture holding means (16) for holding the seat portion so as not to rotate around the vertical axis. is ,
The treatment means (15) is a pedestal portion extending in the first direction S1 from the seat portion (21) with respect to a first direction S1 and a second direction S2 extending in mutually different directions in the diametrical direction of the vertical axis (12). A treatment section (23) comprising a first treatment section (23A) composed of massaging balls (29) provided in (30) and an arm section (22) extending in the second direction S2 from the seat section (21). It has a second treatment unit (23B) composed of
The first treatment section (23A) inserts a holding shaft (32) provided at a position eccentric from the center (Z2) of the massaging balls (29) into the holding hole (33) of the base (30). It is configured to be movable between a first kneading position (F1) and a second kneading position (F2) through rotation of the holding shaft in the axial direction, and the kneading balls (29) are moved to the first position. A locking mechanism (34) is provided that locks in a non-rotatable state in the kneading position (F1) and the second kneading position (F2),
By selecting the position of the kneading balls (29) from the first kneading position (F1) and the second kneading position (F2), the size of the gap between the kneading balls and the second treatment section (23B) is changed. A massage device characterized in that it is configured to The treatment portion (23) of the second treatment portion (23B) is formed into a finger shape,
During rotation of the cam means (14), the locus of rotation of the second finger-shaped treatment section (23B) is larger than the locus of rotation of the first treatment section (23A). The massage device according to claim 1. The locking mechanism (34) includes locking means (35) provided on the kneading balls (29) including the holding shaft (32), and the kneading balls at the first kneading position (F1) and the second kneading position ( F2), characterized in that it comprises a means to be locked (36) provided on a base (30) including a holding hole (33) so as to lock the locking means when moving to F2). 3. A massage device according to Item 1 or 2. A pair of massage units (3UL) and (3UR) are spaced apart, and by selecting the position of the kneading balls (29) from the first kneading position (F1) and the second kneading position (F2), the pair of massage units 4. The massage device according to claim 1, 2 or 3, wherein the distance between the kneading balls can be changed between the kneading balls.

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