JP3547722B2 - Four-ball massage mechanism and massage device incorporating this mechanism - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a four-ball type massage mechanism that can massage a human body by four independent massage bodies, and a massage device incorporating this mechanism.
[0002]
[Prior art]
Conventionally, particularly in the technical field of a chair-type massage device, there is a device in which a four-ball type massage mechanism for massaging a human body by four independent massage bodies is incorporated in a backrest portion. And a pair of left and right swing arms operatively connected to the rotating shaft such that one end and the other end swing in opposite directions in the left-right direction with the rotation of the rotating shaft. First and second massage bodies respectively attached to one end and the other end of the left swing arm, and third and fourth massage bodies respectively attached to the one end and the other end of the right swing arm (For example, refer to JP-A-2000-237257).
[0003]
A pair of left and right cam members having cam surfaces inclined symmetrically with respect to a plane perpendicular to the axis direction of the rotation shaft are fixed to the rotation shaft, and project from the respective cam members in a radially outward direction. The pivoted arm is pivotally connected to the center of each pivot arm by the cam function of the cam member fixed to the rotary shaft, so that the pivot arm is pivoted left and right through the lever, and The rotation is converted into the massage movement of each massage body.
In the conventional four-ball massage mechanism, the cam surfaces of both cam members fixed to the rotary shaft for kneading are inclined symmetrically with respect to a plane orthogonal to the axial direction of the rotary shaft, and are opposite to each other. Has become. Therefore, when the rotation axis is rotated, the second and fourth massage bodies are separated from each other when the first and third massage bodies are close to each other, and the second and fourth massage bodies are separated when the first and third massage bodies are separated from each other. Massage massage movements in which the massage bodies approach each other are performed, and the massage massage movement by such a four-ball type massage mechanism intensively loosens the upper and lower two affected parts in the back part and removes blood circulation of the affected parts. Suitable to promote.
[0004]
[Problems to be solved by the invention]
By the way, in the case of massaging the back part of the human body, instead of the local massaging massage as described above, if the back part of the human body is caused to reciprocate right and left in a fixed cycle as a whole, blood circulation of the entire upper body is achieved. Is promoted, and in some cases, the visceral function of the abdomen is activated to promote health.
However, in the conventional four-ball massage mechanism, since both cam members are fixed to the rotating shaft so that the inclination directions of the cam surfaces are opposite to each other, the rotating motion of the rotating shaft causes The first and third massage bodies and the second and fourth massage bodies can perform only the massage massage movement approaching and separating from each other, and cannot perform the swing massage movement described above.
[0005]
In view of such circumstances, the present invention incorporates a four-ball type massage mechanism capable of reciprocating the back portion of the human body right and left as a whole to promote blood circulation of the entire upper body and this mechanism. It is a first object to provide a massage device that has been used.
On the other hand, in the conventional four-ball massage mechanism, a pair of left and right rods that are retracted and retracted by a hitting rotary shaft provided separately from the rotary shaft for kneading are pivotally attached to the base end of each lever, thereby providing one lever. The massage mechanism allows both massaging and slapping massage movements, but with such a structure, a drive shaft (massage rotation shaft and slapping rotation shaft) is required to perform each massage movement. Only the structure becomes complicated and the manufacturing cost increases.
[0006]
In addition, in the first place, with the conventional four-ball massage mechanism, as described above, even if the kneading rotary shaft is rotated no matter how much, it is possible to perform the swing massage movement itself in which the back portion of the human body reciprocates right and left as a whole. Since it is impossible, both the massage massage exercise and the swing massage exercise cannot be performed.
The present invention has been made in view of such circumstances, and allows the four massage bodies to perform both the massage massage movement and the swing massage movement without significantly complicating the structure. A second object is to obtain a four-ball massage mechanism and a massage device incorporating this mechanism at low cost.
[0007]
Furthermore, the present invention enables the four massage bodies to perform three types of exercises, namely, massage massage, swing massage and tapping, without complicating the structure so much. It is a third object of the present invention to obtain a four-ball massage mechanism capable of performing the above-mentioned massage and a massage device incorporating this mechanism at low cost.
[0008]
[Means for Solving the Problems]
In order to achieve the first object, the present invention takes the following technical measures.
That is, the present invention relates to a rotating shaft erected in the left-right direction, and one end and the other end interlockedly connected to the rotating shaft such that the one end and the other end swing in opposite directions in the left-right direction with the rotation of the rotating shaft. Left and right swing arms, first and second massage bodies attached to one end and the other end of the left swing arm, and one end and the other end of the right swing arm, respectively. In the four-ball massage mechanism including the attached third and fourth massage bodies, when both the first and third massage bodies move to the left, both the second and fourth massage bodies move to the right. An interlocking hand for swinging the pair of left and right swing arms such that the first and third massage bodies move to the right when the first and third massage bodies move to the right. In which the provided.
[0009]
According to the present invention, when the rotation shaft is rotated, the interlocking means causes the second and fourth massage bodies to move to the right when both the first and third massage bodies move to the left, and The pair of left and right swing arms swing so that the third massage body and the fourth massage body move to the left when both move to the right. For this reason, by setting the number of rotations of the rotating shaft to an appropriate value (about 100 to 200 rpm), the back part of the human body can be reciprocated right and left in a certain cycle by the four massage bodies. Yes, it can promote blood circulation throughout the upper body.
[0010]
In the present invention, the interlocking means is, specifically, the rotating shaft penetrating each swing arm so as to be rotatable relative to each swing arm, and an axial center of the rotating shaft. And a pair of left and right cam members each having a cam surface which is fixed to the portion and which is inclined in the same direction with respect to the same rotation axis, and which abuts the cam surface with each of the swing arms. can do.
In this case, since the cam surfaces of both cam members are inclined in the same direction with respect to the rotation axis, the movement directions of the first and third massage bodies accompanying the rotation of the rotation axis are uniform, and the second and fourth massage bodies are moved. Since the moving directions of the massage bodies are also aligned, the above-mentioned swing massage movement can be performed by each massage body.
[0011]
In the present invention, an anti-sway member is provided in the middle of each of the swing arms to restrict the arm from rotating together with the rotation of the rotation shaft, and the anti-sway member is rotated by the rotation of the rotation shaft. If a spring member for positioning at a predetermined position in the direction is provided, each swing arm returns to the original neutral position by a spring force when the human body is separated from each massage body. It becomes easier to address the massage body to the affected area.
On the other hand, in order to achieve the second object, the present invention has taken the following technical means.
[0012]
That is, the present invention relates to a rotating shaft erected in the left-right direction, and one end and the other end interlockedly connected to the rotating shaft such that the one end and the other end swing in opposite directions in the left-right direction with the rotation of the rotating shaft. Left and right swing arms, first and second massage bodies attached to one end and the other end of the left swing arm, and one end and the other end of the right swing arm, respectively. In a four-ball massage mechanism having attached third and fourth massage bodies, each of the massage bodies is a massage massage movement defined by the following (a) or a swing defined by (b). Switching means for switching the posture of the two swing arms is provided so as to perform any of the massage movements.
[0013]
(A) when the first and third massage bodies approach each other, the second and fourth massage bodies separate from each other, and when the first and third massage bodies separate from each other, the second and fourth massage bodies Kneading massage exercise where people approach each other
(B) When both the first and third massage bodies move to the left, the second and fourth massage bodies move to the right, and when the first and third massage bodies move to the right, the second massage body moves to the right. Swing massage exercise in which the second and fourth massage bodies move to the left
In the present invention described above, the specific structure of the switching means is not particularly limited. For example, a mechanical structure (for example, a half-rotation clutch to be described later) that changes the position of the massage roller in accordance with the switching of the rotation driving direction of the rotating shaft. Mechanism).
[0014]
According to the present invention, it is possible to perform the kneading massage exercise or the swing massage exercise defined by the above (a) or (b) by the four massage bodies only by switching the postures of the both swing arms by the switching means. Since it is possible, it is possible to cause the four massage bodies to perform the kneading massage exercise and the swing massage exercise without complicating the structure so much.
Hereinafter, more specific embodiments of the massage mechanism of the present invention that can switch the massage motion will be described.
[0015]
That is, in the present invention, the rotation shaft is a first shaft portion that swings the left swing arm, and a second shaft portion that is arranged coaxially with the first shaft portion and swings the right swing arm. In this case, the switching means can be constituted by a half-turn clutch mechanism that regulates the range in which the first shaft portion and the second shaft portion rotate relative to each other to approximately half a rotation.
In the case of such a structure, for example, when the rotation direction of the first shaft portion is switched, the relative rotation position of the second shaft portion with respect to the first shaft portion changes by a half turn. Therefore, by simply rotating the rotation direction of the drive motor in the normal or reverse direction, the posture of the two swing arms can be switched to either the posture for massaging massage movement or the posture for swing massage movement. Arm attitude switching control can be performed very easily.
[0016]
More specifically, such a half-turn clutch mechanism has a lateral groove, which is coaxially and non-rotatably fixed to the end of the second shaft portion and has a circumferential length corresponding to a half turn, on the outer peripheral portion. A cylindrical member and a first shaft portion which is coaxially and rotatably inserted into the cylindrical member, is protruded radially outward from an end portion of the first shaft portion, and the protruding end portion is housed in the lateral groove. And a stopper pin.
Further, as the half-turn clutch mechanism, a first clutch body fixed to an end of the first shaft portion, and is inserted into the end portion of the second shaft portion so as to be rotatable and axially movable within a half rotation range. The second clutch body detachably meshes with the first clutch body, and the second clutch body is disengaged from the first clutch body at the beginning when the rotation shaft rotates forward or reversely, and then meshes with the clutch body again. And cam means.
[0017]
In the case of such a half-turn clutch mechanism, when the rotation direction of the rotation shaft is reversed, the second clutch body is once detached from the first clutch body and meshes with the first clutch body again. For this reason, if the two clutch bodies are engaged with each other at two positions separated by 180 degrees in the circumferential direction, the relative rotation between the two shaft portions after the switching of the posture of the swing arm is almost completely restricted. become able to.
Therefore, in the present invention, when the rotating shaft is rotated forward, the rotating shaft is driven at a rotation speed for massage massage (approximately 50 to 100 rpm), and when the rotating shaft is reversed, By providing a driving means for driving the rotating shaft at a rotational speed for swing massage (approximately 100 to 200 rpm), it is possible to perform both the massage massage movement and the swing massage movement with one unit without complicating the structure so much. As a result, a four-ball massage mechanism capable of performing both massage movements can be manufactured at low cost.
[0018]
In order to achieve the third object, each of the swing arms is configured such that when one of the swing arms approaches the human body, the other swing arm moves away from the human body, and one swing arm moves away from the human body. It is recommended that the other swing arm be linked to the rotating shaft so as to approach the human body.
Then, after adopting such a connection structure, when both swinging arms are switched to the posture for performing the swing massage movement defined in the above (b) and the rotating shaft is rotated at a relatively high speed (about 300 rpm or more), the human body The back part cannot follow the reciprocating movement of the left and right of each massage body and does not resonate, so that the beating massage movement in which each massage body alternately advances and retreats to the affected part at high speed is performed.
[0019]
As described above, according to the present invention, a swing massage motion or a hit massage motion other than the massage massage motion can be performed only by adjusting the forward / reverse rotation of the rotating shaft and the rotation speed thereof. A possible four-ball massage mechanism can be manufactured at low cost.
The four-ball massage mechanism of the present invention described above can be implemented in various forms, such as a relatively small mounted massage device or a hand-held massage device, or a relatively large leaning massage device or a chair massage device. It is possible to incorporate in a massage device.
[0020]
In this case, in a leaning type massage device or a chair type massage device, since it is necessary to massage the back region of the human body in a wide vertical direction, a moving means for moving the roller massage mechanism itself in the vertical direction is provided. Is preferred.
[0021]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 5 show an embodiment of a four-ball massage mechanism 1 according to the present invention, which is capable of switching a massage motion.
As shown in FIGS. 1 and 2, the massage mechanism 1 includes a support frame 3 having left and right support brackets 2, 2 disposed at a predetermined interval from each other at both left and right ends, and both brackets of the support frame 3. A rotating shaft 5 erected in the left-right direction by rotatably supporting both ends via bearings 4 by means of the bearings 2 and 2, and a massager such as massaging a human body with the rotation of the rotating shaft 5. It comprises a ball-shaped massage member 6 and a driving means 7 for driving the rotating shaft 5 to be able to rotate forward and backward.
[0022]
The massage member 6 includes a pair of left and right swinging members that are operatively connected to the rotating shaft 5 such that one end and the other end swing in opposite directions in the left-right direction with the rotation of the rotating shaft 5. Moving arms 8L and 8R, first and second massage bodies 11 and 12 respectively attached to one end and the other end of left swing arm 8L, and one end and the other end of right swing arm 8R And third and fourth massage bodies 13 and 14 attached to the respective parts.
As shown in FIG. 2, the pair of left and right swing arms 8 </ b> L and 8 </ b> R has an intermediate plate portion 9 through which the rotating shaft 5 penetrates in a relatively rotatable manner, and a state inclined obliquely from an outer peripheral portion of the intermediate plate portion 9. The first to fourth massage bodies 11 to 14 are made of a substantially bifurcated metal plate material having a pair of front and rear arms 10 integrally projecting from each other. Mounted freely. As shown in FIG. 1, sliding plates 15, 16 which are abutting portions of a cam surface 21, which will be described later, are fixed to the front and back surfaces of the intermediate plate 9.
[0023]
The first to fourth massage bodies 11 to 14 are provided with idler wheels 18 rotatably mounted on opposed inner surfaces of distal ends of both arms 10, 10 by fulcrum bolts 17, and outer peripheral portions of the idler wheels 18. The first to fourth massage bodies 11 to 14 are individually wound on the back portion of the human body 20 (see FIGS. 6 and 7). They are arranged so as to be in contact with each other so as to be in contact with each other vertically and horizontally.
A pair of left and right cam members 22L and 22R having a cam surface 21 (see FIG. 1) that is inclined with respect to the rotating shaft 5 is fixed to a halfway portion of the rotating shaft 5 in the axial direction. As shown in FIG. 1, the cam member 22 includes a first boss 23 fixed to the rotation shaft 5 so as to be relatively non-rotatable via a rotation preventing means such as a key, and a tip cylindrical portion of the first boss 23. And a second boss portion 24 fitted in the second boss portion. In the center of the first boss portion 23, an inclined cylinder portion 25 having the cam surface 21 having an outer peripheral surface inclined with respect to the axial direction of the rotating shaft 5 is formed. Slide plates 15 and 16 fixed to the front and back sides of the swing arms 8L and 8R are fitted into the cam surface 21 of the 25 so as to be relatively rotatable.
[0024]
Therefore, when the rotating shaft 5 rotates in either the forward direction or the reverse direction, the pair of left and right swing arms 8L and 8R swing along the cam surfaces 21 of the cam members 22L and 22R that rotate integrally with the rotating shaft 5. As a result, the first and second massage bodies 11, 12 attached to the respective ends of the left swing arm 8L move in opposite directions in the left-right direction, and the respective ends of the right swing arm 8R. The third and fourth massage bodies 13, 14 attached to the first and second massagers also move in opposite directions in the left-right direction.
[0025]
Thus, by the rotating shaft 3 and the cam member 22 rotating integrally therewith, each of the four massage bodies 11 to 14 performs a swing massage movement (FIG. 7) and a swing massage movement (FIG. 7) described below. Interlocking means 26 for swinging the moving arms 8L and 8R is provided. In the illustrated example, each of the sliding plates 15 and 16 is separate from the swing arm 8, but one or both of the plates 15 and 16 are integrated with the intermediate plate 9 of the swing arm 8. It can also be molded. Further, a rolling ball may be interposed between the cam surface 21 of the inclined cylindrical portion 25 and the sliding plates 15 and 16 so as to reduce frictional resistance due to sliding between them.
[0026]
As shown in FIGS. 1 and 4, the rotating shaft 5 has a first shaft portion 5L for swinging a left swing arm 8L and a first shaft portion 5L arranged coaxially with the first shaft portion 5L. A second shaft portion 5R for swinging the moving arm 8R. Among these, the first shaft portion 5L has a mounting portion for the left cam member 22L and a penetrating portion for the driving means 7 in order from the left, and the second shaft portion 5R has a mounting portion for the right cam member 22R. ing.
That is, the rotating shaft 5 is divided into a left and right first shaft portion 5L and a second shaft portion 5R at a position between the driving means 7 and the right swing arm 8R. Are connected to each other via a half-turn clutch mechanism 29. The half-turn clutch mechanism 29 regulates the range in which the first shaft portion 5L and the second shaft portion 5R rotate relative to each other to substantially half a rotation, and forms a coaxial center on the divided end of the second shaft portion 5R. A cylindrical member 30 fixed non-rotatably and a stopper pin projecting radially outward from a divided end portion of the first shaft portion 5L coaxially and rotatably inserted through the cylindrical member 30. 31.
[0027]
The cylindrical member 30 is formed in a cylindrical shape having an insertion hole 32 penetrating through the center part in the axial direction, and is provided at the opening edge on the driving means 7 side (the left side in FIG. 4) by the first shaft part 5L. A bearing 33 for rotatably holding the stump is provided. A half-moon-shaped lateral groove 34 having a circumferential length corresponding to a half rotation is formed at an intermediate portion in the axial direction of the cylindrical member 30, and the lateral groove 34 has a depth extending from the outer peripheral surface of the cylindrical member 30 to the insertion hole 32. Having On the other hand, at the divided end of the first shaft portion 5L, the stopper pin 31 fixed so as to protrude radially outward by screwing of a set screw or the like is provided. Are movably accommodated in the lateral groove 34 of the tubular member 30.
[0028]
As is apparent from the above configuration, among the constituent members of the rotating shaft 5, the first shaft portion 5L that drives the left swing arm 8L is substantially half-rotated with respect to the cylindrical member 30 that forms the half-turn clutch mechanism 29. The second shaft portion 5R that drives the right swing arm 8R is relatively non-rotatably fixed with respect to the cylindrical member 30.
Therefore, when the first shaft portion 5L of the rotating shaft 5 is rotated forward by the driving means 7, the stopper pin 31 comes into contact with one circumferential end face of the half-moon-shaped lateral groove 34 of the cylindrical member 30, and this contact causes the second pin to be in contact with the second shaft portion. The shaft 5R rotates integrally with the first shaft 5L in the normal rotation direction. On the other hand, when the first shaft portion 5L is rotated in the reverse direction from this state, the stopper pin 31 moves in the lateral groove 34 and abuts on the other circumferential end surface, and the second shaft portion 5R is brought into contact with the first shaft portion 5R. It rotates together with 5L in the reverse direction. While the stopper pin 31 moves between one circumferential end face of the lateral groove 34 and the other circumferential end face, the right cam member 22R provided on the second shaft portion 5R on the driven side moves to the left. Idle rotation relative to the cam member 22L by a half rotation.
[0029]
As a result, the left and right swing arms 8L and 8R assume a rubbing posture in which the inclination directions with respect to the rotating shaft 5 are opposite to each other as shown by a solid line in FIG. It can be in a non-rubbing posture parallel to each other in the same inclination direction.
Then, when the rotating shaft 5 is driven with the left and right swing arms 8L and 8R in the above-described kneading posture, the four massage bodies 11 to 14 are, as shown in FIG. When the first and third massage bodies 11 and 13 are separated from each other, the second and fourth massage bodies 12 and 14 are separated from each other (FIG. 6A). When the massage bodies 12 and 14 come close to each other (FIG. 6B), a massage massage is performed. In this case, if the number of rotations of the rotating shaft 5 is set to approximately 50 to 100 rpm, the affected parts in the upper and lower portions of the back part of the human body 20 are intensively loosened, and the local stiffness of the back part is healed. be able to.
[0030]
On the other hand, when the rotating shaft 5 is driven with the left and right swing arms 8L and 8R in the non-kneading position, the four massage bodies 11 to 14 are moved to the first and third massage positions as shown in FIG. When the bodies 11 and 13 move to the left, both the second and fourth massage bodies 12 and 14 separate from each other to the right (FIG. 7 (a)), and the first and third massage bodies 11 and 13 move to the right. When it moves, both the second and fourth massage bodies 12, 14 move to the left (FIG. 7 (b)), and perform a swing massage exercise. In this case, if the rotation speed of the rotating shaft 5 is set to approximately 100 to 200 rpm, the back portion of the human body 20 resonates with the movement of the four massage bodies 11 to 14, and these massage bodies 11 to 14 It reciprocates right and left at almost the same cycle, and can promote blood circulation of the entire upper body.
[0031]
Therefore, the inclined posture of the pair of left and right swing arms 8L and 8R is adjusted so that the four massage bodies 11 to 14 perform any of the above-mentioned massaging massage movement or swing massage movement by the above-described half-turn clutch mechanism 29. The switching means 35 is configured to switch the direction to the opposite direction or the same direction.
In the half-turn clutch mechanism 29 shown in FIG. 4, the brake cylinder 36 covering the outer peripheral portion of the cylinder member 30 is provided at the divided end of the first shaft portion 5L in order to reduce the shock caused by the rapid switching operation of the mechanism 29. A rubber pad 37 for increasing sliding friction with respect to the outer peripheral surface of the cylinder member 30 is fixed to the inner peripheral surface of the brake cylinder 36, but the use of these brake means is optional.
[0032]
As shown in FIG. 1, in the present embodiment, the left and right cam members 22 </ b> L and 22 </ b> R not only have the cam surface 21 inclined with respect to the rotation shaft 5 but are also eccentric from the rotation shaft 5 by the same distance. In this state, it is fixed to each shaft portion 5L, 5R. The eccentric state of the two cam members 22L and 22R is determined when the swing arms 8L and 8R are in the kneading posture and the massage bodies 11, 12 and 13, 14 on the left and right sides thereof are closest to each other (FIG. 1). In the state shown by the solid line, the centers of the two cam members 22L and 22R are most shifted from the axis of the rotary shaft 5 toward the human body 20 (upper side in FIG. 1).
[0033]
For this reason, when the rotating shaft 5 is rotated with both swinging arms 8L and 8R in the kneading posture, the left and right swinging arms 8L and 8R repeatedly approach and separate from the human body 20 at the same timing. . On the other hand, when the rotating shaft 5 is rotated with both the swinging arms 8L and 8R in the non-rubbing position, the rotation direction cycle of the left cam member 22L and the right cam member 22R is shifted by 180 degrees by the half rotation clutch mechanism 29. When the left swing arm 8L approaches the human body 20, the right swing arm 8R moves away from the human body 20, and when the left swing arm 8L moves away from the human body 20, the swing arm 8R approaches the human body 20. Has become.
[0034]
When the rotating shaft 5 is driven at a relatively high speed (about 300 rpm or more) when the rotating shaft 5 is driven with the both swinging arms 8L and 8R in the non-kneading posture, the back portion of the human body 20 is massaged. The body cannot follow the left and right reciprocating movements of the bodies 11 to 14 and does not resonate, and the left massage bodies 11 and 12 and the right massage bodies 13 and 14 alternately advance and retreat alternately with respect to the affected part at high speed. A beating massage exercise will be performed.
As shown in FIGS. 1 and 2, the driving unit 7 includes an electric motor 39 and a deceleration that reduces the driving force of the motor 39 and transmits the reduced driving force to the rotating shaft 5 (the first shaft portion 5L in the present embodiment). Machine 40. The speed reducer 40 includes a gear case 42 in which a first shaft portion 5L of the rotating shaft 5 is rotatably inserted through a bearing 41, a worm wheel 43 fixed to a portion of the rotating shaft 5 in the gear case 42. And a worm (not shown) fixed to the output shaft of the motor 39 so as to mesh with the worm wheel 43.
[0035]
In the present embodiment, the motor 39 can rotate forward and reverse by an electric control circuit (not shown). Further, the electric control circuit of the driving means 7 has a function capable of changing the rotation speed of the rotary shaft 5 in at least two steps when both the swing arms 8L and 8R are in the non-kneading posture (the virtual line state in FIG. 1). Having. This speed change function may be performed stepwise or steplessly. The shift function may be performed mechanically (with a gear change or the like) other than the control circuit for electrically controlling the motor 39.
[0036]
As shown in FIGS. 1 and 3, the intermediate plate 9 of each swing arm 8L, 8R has a steadying member 44 that regulates the arm 8L, 8R from rotating together with the rotation of the rotating shaft 5. The anti-sway member 44 is formed of a bifurcated fork protruding from the lower end of the intermediate plate 9. A slide shaft 46 erected in a manner movable in the front-rear direction in a state parallel to the rotating shaft 5 is inserted through the bottom plate 45 of the support frame 3. , 8R are hooked so as to be movable in the left-right direction.
[0037]
A pair of front and rear support shafts 47 are inserted through the front end and the rear end of the bottom plate 45 of the support frame 3. A guide roller that can be slidably fitted on both guide rails (not shown) vertically mounted on a backrest portion 78 of a massage device 72 (FIGS. 10 and 11) and a chair-type massage device 76 (FIG. 12). 48 are provided.
As shown in FIG. 3, a spring housing portion 49 formed of a long hole is formed at the center of the bottom plate 45 of the support frame 3, and a spring member 50 formed of a tension coil spring is housed in the spring housing portion 49. . One end of the spring member 50 is hooked on the center of the slide shaft 46 that can move in the front-rear direction, and the other end is hooked on the center of the rear support shaft 47 that is immovable in the front-rear direction.
[0038]
For this reason, the slide shaft 46 is always urged rearward (downward in FIG. 3) by the pulling force of the spring member 50, whereby each of the steady rest members 44 hooked on the slide shaft 46 is moved. The rotary shaft 5 is positioned at a predetermined position in the rotation direction. Therefore, in the massage mechanism 1 of the present embodiment, when the human body 20 is separated from each of the massage bodies 11 to 14, each of the swing arms 11 to 14 returns to the original neutral position by the spring member 50. When used, each massage body 11 to 14 is easily directed to the affected part.
[0039]
FIG. 5 shows another half-turn clutch mechanism 29 different from that of FIG.
As shown in FIG. 5, the half-turn clutch mechanism 29 in this case includes a first clutch body 51 fixed to an end of the first shaft 5L and a half-turn range of an end of the second shaft 5R. A second clutch body 52 rotatably and axially movably inserted and removably meshing with the first clutch body 51; and a second clutch body 52 which is initially rotated when the rotating shaft 5 rotates forward or reverse. And a cam means 53 which once disengages from the body 51 and then engages with the clutch body 51 again.
[0040]
Each of the clutch teeth 54 of the first and second clutch bodies 51 and 52 is formed in a shape in which the concave portion 55 and the convex portion 56 are switched in a range that is equally divided in the circumferential direction around the axis. For this reason, the first clutch body 51 and the second clutch body 52 mesh with each other at two positions separated by 180 degrees in the circumferential direction around the axis.
On the other hand, the cam means 53 includes a boomerang-shaped cam hole 57 formed in the outer peripheral wall of the second clutch body 52, and a cam pin 58 driven into the end of the second shaft portion 5R in the radial direction. The protruding end portion is movably housed in the cam hole 57. As shown in FIG. 5, the boomerang-shaped cam hole 57 has a center bent portion located on the first clutch body 51 side (left side in FIG. 5), and both end portions are different from the first clutch body 51. It is disposed on the outer peripheral wall of the second clutch body 52 so as to be located on the opposite side (the right side in FIG. 5).
[0041]
Further, the second clutch body 52 is constantly urged toward the first clutch body 51 by a pressing spring 59 externally fitted to the second shaft portion 5R. In the case of the half-turn clutch mechanism 29 shown in FIG. 5, when the rotating shaft 5 rotating forward in the direction of arrow A in FIG. The second clutch body 52 moves to the opposite side of the first clutch body 51 along the cam hole 57 and disengages from the first clutch body 51 once, and when the cam pin 58 exceeds the bent portion of the cam hole 57, the second clutch body 52 Returning to the body 51 side, the clutch body 51 is engaged again.
[0042]
In the case where the rotating shaft 5 rotating in the direction of arrow B in FIG. 5 rotates forward in the direction of arrow A, the second clutch body 52 once separates from the first clutch body 51 as described above. The first clutch body 51 is engaged again. Since the clutch teeth 54 of the two clutch bodies 51 and 52 are meshed with each other at two positions 180 degrees apart in the circumferential direction, the switching of the tilting directions of the two swing arms 8L and 8R is completed. The relative rotation between the two shaft portions 5L and 5R is almost completely regulated by the clutch teeth 54.
[0043]
Next, the operation of the four-ball massage mechanism 1 having the above configuration will be described.
That is, in the massage mechanism 1, when the rotation shaft 5 is first rotated in a predetermined normal rotation direction, both the swing arms 8L and 8R swing while maintaining the state of being inclined in the opposite direction to each other. Therefore, the massage massage movement shown in FIG. 6 is performed by the four massage bodies 11 to 14. In addition, in order to perform this massaging massage exercise, the rotation speed of the rotating shaft 5 may be set to 100 rpm or less, and it is preferable to set the rotation speed to approximately 50 to 60 rpm.
On the other hand, when the rotating shaft 5 is rotated in the reverse direction, the two swing arms 8L and 8R swing while maintaining a parallel state in the same direction. At this time, if the rotation speed of the rotating shaft 10 is set to a relatively low speed for swing massage (around 100 to 200 rpm), the back part of the human body 20 resonates with respect to the reciprocating motion of each of the four massage bodies 11 to 14, The swing massage exercise shown in FIG. 7 is performed by the massage bodies 11 to 14.
[0044]
Also, at this time, if the rotation speed of the rotating shaft 5 is set to a relatively high-speed tapping massage (300 rpm or more), the back portion of the human body 20 cannot follow the reciprocating motion of each of the four massage bodies 11 to 14. In addition, the left massage bodies 11 and 12 and the right massage bodies 13 and 14 perform a beating massage movement in which the affected part is alternately hit at a high speed.
As described above, according to the massage mechanism 1 of the present embodiment, by simply switching the rotation direction of the rotating shaft 5, both the massage massage movement and the swing massage movement (or the tapping massage movement) are performed on the four massage bodies 11 to 14. Can be performed. In addition, it is possible to perform either the swing massage motion or the hit massage motion simply by changing the rotation speed of the rotary shaft 5 with the both swing arms 8L and 8R in the non-kneading posture. Therefore, after all, according to the massage mechanism 1 of the present embodiment, three types of massage operations of the massage massage, the swing massage, and the tapping massage can be performed by only one device.
[0045]
FIG. 8 shows a first embodiment of a massage device incorporating a four-ball massage mechanism 1 according to the present invention.
The massage device 61 in this case is a relatively small flat mounting type, and includes a mounting type casing 63 having an opening 62 opening upward, and a massage mechanism shown in FIG. 1, and the opening 62 of the casing 63 is closed by a soft cover member 64 made of an elastic cloth material or the like. The massage device 61 is used, for example, by putting the human body 20 lying on the back under the back, waist, thighs or calves, or placing the soles of the feet on the massage mechanism 1 while sitting on a chair. can do.
[0046]
FIG. 9 shows a second embodiment of a massage device incorporating a four-ball massage mechanism 1 according to the present invention.
The massage device 66 of this embodiment has a hand-held casing 69 having an opening 67 opening on the front side (upper side in FIG. 9) and having hand-held portions 68 on both left and right sides, and is housed in the casing 69. It is a hand-held type equipped with the massage mechanism 1 shown in FIG.
The left and right swing arms 8L and 8R are housed in the openings 67 and 57, respectively, and project from the upper surface of the casing 69. The cover member 70 is separated into left and right sides to close the openings 67, 67, respectively.
[0047]
The hand-held portion 68 is composed of a cylindrical portion integrally formed on the left and right sides of the casing 69, and the back can be massaged by holding the cylindrical portion with both hands and pressing it against the back of another person. Further, the massage device 66 of the present embodiment can be placed on a floor or the like with the massage bodies 11 to 14 facing upward as shown in FIG. Can also be used.
FIGS. 10 and 11 show a third embodiment of a massage device incorporating the four-ball massage mechanism 1 according to the present invention.
[0048]
The massage device 72 of this embodiment has a longitudinal dimension substantially corresponding to the back region of the human body 20, and can stand on the wall surface W with the back surface facing the wall surface W side. It is a leaning type having a casing 73, and the massage mechanism 1 shown in FIG.
The casing 73 in this case is formed in a flat vertically long box shape having a vertically long opening opening on the front surface side, and as shown in FIG. As shown, it can lean against the wall surface W of the backrest portion of the chair 74. The massage mechanism 1 shown in FIG. 1 is housed inside the casing 73 so that each of the massage bodies 11 to 14 corresponds to the opening on the front surface side.
[0049]
As described above, since the casing 73 is formed in a flat vertically long box shape capable of leaning against the wall surface W, by using the casing 73 leaning against the wall surface W as shown in FIGS. As in the case of the massage device 76, the back can be massaged over a wide area.
On the other hand, unlike the chair type massage device 76, the casing 73 is formed in a flat vertically long box shape, so that it can be stored in a narrow place such as a corner of a room or between furniture when not needed. A compact massage device having substantially the same function as that of the chair-type massage device 76 can be obtained at low cost.
[0050]
FIG. 12 shows a fourth embodiment of a massage device incorporating the four-ball massage mechanism 1 according to the present invention.
The massage device 76 of this embodiment includes a seat portion 77, a backrest portion 78 erected at the end of the seat portion 77, and the four balls shown in FIG. 1 housed inside the backrest portion 78. And a chair-type massage mechanism provided with a massaging mechanism 1.
When the massage mechanism 1 is incorporated into the backrest 78, a moving means (such as a guide rail for guiding the guide roller 48) for moving the mechanism 1 in the vertical direction is provided. The massage can be performed over a wide area covering the back and waist.
[0051]
The embodiment described in the present specification is an exemplification of the present invention, and is not intended to limit the interpretation. That is, the scope of the present invention is defined by the appended claims, and all modifications and equivalents of the appended claims are included in the present invention.
For example, in the above embodiment, as a structure for switching the posture of the swing arms 8L and 8R, a case where the first shaft portion 5L and the second shaft portion 5R, which are divided into right and left, are connected by the half-turn clutch mechanism 29. Although described, a mechanical switching structure, an electromagnetic clutch mechanism, or a manual switching mechanism may be employed.
[0052]
Further, the present invention does not necessarily require the provision of the switching means 35 including the half-turn clutch mechanism 29, and the present invention includes a case where only the massage massage is performed by the four massage bodies 11 to 14. .
Further, the four-ball massage mechanism 1 of the present invention can be incorporated in a bed-type massage device.
[0053]
【The invention's effect】
As described above, according to the present invention, the back part of the human body can be reciprocated right and left as a whole by the four massage bodies performing the swing massage movement, so that the blood circulation of the entire upper body can be promoted. it can.
Further, according to the present invention, since the four massage bodies can perform both the massage massage movement and the swing massage movement without significantly complicating the structure, the four-ball type capable of performing these massage movements can be performed. A massage mechanism and a massage device incorporating this mechanism can be manufactured at low cost.
[0054]
Furthermore, according to the present invention, it is possible to cause the four massage bodies to perform three types of movements of the massage massage, the swing massage, and the hit massage without significantly complicating the structure. And a massaging device incorporating this mechanism can be manufactured at low cost.
[Brief description of the drawings]
FIG. 1 is a front view of a four-ball massage mechanism according to the present invention.
FIG. 2 is a perspective view of the massage mechanism.
FIG. 3 is a bottom view of the massage mechanism.
FIG. 4 is an enlarged sectional view of a half-turn clutch mechanism.
FIG. 5 is an enlarged front view showing another modified example of the half-turn clutch function.
FIG. 6 is an explanatory diagram of an operation of a kneading massage exercise performed by each swing arm that has been switched to the reverse orientation.
FIG. 7 is an explanatory diagram of an operation of a swing massage exercise performed by each swing arm switched to the parallel posture.
FIG. 8 is a perspective view of a placement type massage device having a built-in four-ball massage mechanism according to the present invention.
FIG. 9 is a perspective view of a hand-held massage device incorporating the four-ball massage mechanism according to the present invention.
FIG. 10 is a side view showing an example of a use state of a leaning type massage device incorporating a four-ball type massage mechanism according to the present invention.
FIG. 11 is a side view showing an example of a use state of a leaning type massage device incorporating a four-ball type massage mechanism according to the present invention.
FIG. 12 is a side view of a chair-type massage device incorporating a four-ball massage mechanism according to the present invention.
[Explanation of symbols]
1 four ball massage mechanism
5 Rotation axis
5L first shaft
5R second shaft
7 Driving means
8L swing arm (left side)
8R swing arm (right side)
11 First Massage Body
12 Second Massage Body
13 Third massage body
14 Fourth massage body
20 human body
21 Cam surface
22L cam member (left side)
22R cam member (right side)
26 Interlocking means
29 Half-turn clutch mechanism
30 tube member
31 Stopper pin
34 Yokomizo
35 Switching means
44 Anti-sway member
50 Spring members
51 First clutch body
52 Second clutch body
53 cam means
61 Placement type massage device
62 opening
63 casing
66 Hand held massage device
67 opening
68 Handheld
69 casing
72 leaning massage device
73 casing
76 Chair type massage device
77 Seat
78 Backrest

Claims (15)

A rotating shaft (5) erected in the left-right direction;
A pair of left and right swing arms (8L) interlockingly connected to the rotating shaft (5) so that one end and the other end swing in opposite directions in the left and right direction with the rotation of the rotating shaft (5). , 8R),
First and second massage bodies (11, 12) attached to one end and the other end of the left swing arm (8L), respectively;
Third and fourth massage bodies (13, 14) respectively attached to one end and the other end of the right swing arm (8R);
When the first and third massage bodies (11, 13) both move to the left, the second and fourth massage bodies (12, 14) both move to the right, and the first and third massage bodies (11, 13) move. Interlocking means for swinging the pair of left and right swing arms (8L, 8R) such that the second and fourth massage bodies (12, 14) both move to the left when both move to the right. (26)
A four-ball massage mechanism equipped with: The four-ball massage mechanism according to claim 1,
The rotating shaft (5) penetrating each swing arm (8L, 8R) so as to be rotatable relative to each swing arm (8L, 8R);
The rotary shaft (5) has a cam surface (21) which is fixed to an intermediate portion in the axial direction of the rotary shaft (5) and is inclined in the same direction with respect to the rotary shaft (5). A pair of left and right cam members (22L, 22R) that are respectively in contact with the swing arms (8L, 8R). The four-ball massage mechanism according to claim 2,
An anti-sway member (44) is provided at a middle portion of each of the swing arms (8L, 8R) to restrict the arms (8L, 8R) from rotating together with the rotation of the rotation shaft (5), A spring member (50) for positioning the steady rest (44) at a predetermined position in the rotation direction of the rotation shaft (5) is provided. A rotating shaft (5) erected in the left-right direction;
A pair of left and right swing arms (8L) interlockingly connected to the rotating shaft (5) so that one end and the other end swing in opposite directions in the left and right direction with the rotation of the rotating shaft (5). , 8R),
First and second massage bodies (11, 12) attached to one end and the other end of the left swing arm (8L), respectively;
Third and fourth massage bodies (13, 14) respectively attached to one end and the other end of the right swing arm (8R);
The two swinging arms (8L) so that each of the massage bodies (11 to 14) performs any of the massage massage movement defined in the following (a) or the swing massage movement defined in the (b). , 8R) switching means (35) for switching the attitude of
A four-ball massage mechanism equipped with:
(A) When the first and third massage bodies (11, 13) approach each other, the second and fourth massage bodies (12, 14) separate from each other, and the first and third massage bodies (11, 13). , 13) are separated from each other, the second and fourth massage bodies (12, 14) come close to each other, and the massaging massage movement (b) is performed when both the first and third massage bodies (11, 13) move to the left. When both the second and fourth massage bodies (12, 14) move to the right and the first and third massage bodies (11, 13) both move to the right, the second and fourth massage bodies (12) move. , 14) Swing massage movement in which both move to the left The four-ball massage mechanism according to claim 4,
The rotating shaft (5) includes a first shaft portion (5L) that swings the left swing arm (8L), and is arranged coaxially with the first shaft portion (5L) and the right swing arm. A second shaft portion (5R) for swinging the (8R).
The switching means (35) comprises a half-turn clutch mechanism (29) for regulating the range in which the first shaft portion (5L) and the second shaft portion (5R) rotate relative to each other to approximately half a rotation. The four-ball massage mechanism according to claim 5,
The half-turn clutch mechanism (29) has a lateral groove (34) coaxially and non-rotatably fixed to the end of the second shaft portion (5R) and having a circumferential length for half a turn. A tubular member (30) provided on an outer peripheral portion;
The end of the first shaft portion (5L), which is coaxially and rotatably inserted into the cylindrical member (30), protrudes radially outward from the end of the first shaft portion (5L), and its protruding end is the lateral groove (34). And a stopper pin (31) housed therein. The four-ball massage mechanism according to claim 5,
The half-turn clutch mechanism (29) includes a first clutch body (51) fixed to an end of the first shaft portion (5L);
A second clutch body (52) that is rotatably and axially movably inserted in an end portion of the second shaft part (5R) within a half-rotation range and detachably meshes with the first clutch body (51). When,
The cam means (5) which once disengages the second clutch body (52) from the first clutch body (51) when the rotation shaft (5) rotates forward or reversely and then engages the clutch body (51) again. 53). The four-ball massage mechanism according to any one of claims 5 to 7,
When the rotating shaft (5) is rotated forward, the rotating shaft (5) is driven at the number of revolutions for kneading and massaging, and when the rotating shaft is reversed, the rotating shaft (5) is swing-massed. Driving means (7) for driving at the rotation speed for the driving is provided. The four-ball massage mechanism according to any one of claims 5 to 7,
Each of the rocking arms (8L, 8R) is configured such that when one of the rocking arms (8L) approaches the human body (20), the other rocking arm (8R) moves away from the human body (20) and one of the rocking arms (8L, 8R). When the arm (8L) moves away from the human body (20), the other swing arm (8R) approaches the human body (20) and is interlockingly connected to the rotating shaft (5);
When the rotating shaft (5) is rotated forward, the rotating shaft (5) is driven at a rotational speed for kneading and massaging, and when the rotating shaft (5) is rotated reversely, the rotating shaft (5) is rotated. Driving means (7) for driving (5) at a lower rotational speed for a swing massage or a higher rotational speed for a hit massage is provided. The four-ball massage mechanism according to any one of claims 5 to 9,
The first and second shaft portions (5L, 5R) pass through the respective swing arms (8L, 8R) so as to be rotatable relative to the respective swing arms (8L, 8R). A cam member (22L, 22R) is fixed to each of the first and second shaft portions (5L, 5R) in the axial direction, and the first and second shaft portions (5L, 5R) are formed on the cam members (22L, 22R). Cam surfaces (21) inclined with respect to the second shaft portions (5L, 5R) are in contact with the respective swing arms (8L, 8R). The four-ball massage mechanism according to claim 10,
An anti-sway member (44) is provided in the middle of each of the swing arms (8L, 8R) to restrict the arms (8L, 8R) from rotating together with the rotation of the rotation shaft (5). A spring member (50) for positioning the steady rest member (44) at a predetermined position in the rotation direction of the rotation shaft (5) is provided. A mountable casing (63) having an opening (62) opening upward;
The four-ball massage mechanism (1) according to any one of claims 1 to 11, wherein each of the massage bodies (11 to 14) is accommodated in the casing (63) so as to correspond to the opening (62). )When,
A resting type massage device comprising: A hand-held casing (69) having an opening (67) opening on the front side and having hand-held portions (68) on both left and right sides;
The four-ball massage mechanism (1) according to any one of claims 1 to 11, wherein each of the massage bodies (11 to 14) is housed in the casing (69) so as to correspond to the opening (67). )When,
Hand-held massage device equipped with. An independent unitary casing having a longitudinal dimension substantially corresponding to the back region of the human body (20) and capable of leaning against the wall surface (W) with the back surface facing the wall surface (W); (73) a leaning-type casing (73) having an opening opening on the front surface side;
The four-ball massage mechanism (1) according to any one of claims 1 to 11, wherein each of the massage bodies (11 to 14) is accommodated in the casing (73) so as to correspond to the opening.
Leaning massage device equipped with. Seat part (77),
A backrest (78) erected at the end of the seat (77),
12. The backrest part (78), wherein each of the massage bodies (11 to 14) is housed inside the backrest part (78) so as to correspond to a widthwise center part of the backrest part (78). 13. Four-ball massage mechanism (1),
Chair-type massage device equipped with.

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