JP2014033728A - Massage apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a massage apparatus capable of inhibiting a massage part to massage a part that a user does not intend, by retaining a position of the massage part.SOLUTION: A massage apparatus comprises a massage part 3 reciprocating along a first axis line X predetermined with respect to a massage body 2. A power transmission device 4 for connecting the massage part 3 and a first motor 5 includes a first shaft 6 having an endless spiral track 6a formed thereon, and a slide member 7 that is guided by the track 6a of the first shaft 6 and reciprocates along the first axis line X. The track 6a has a lead angle θ larger than 45° with respect to the axis line of the first shaft 6. The massage part 3 is provided on the slide member 7. Therefore, even if external force is applied to the massage part 3, the endless spiral track 6a of the first shaft 6 serves as resistance to the external force, so that the massage part 3 does not move along the first axis line X.

Description

  The present invention relates to a massage apparatus including a massage unit that reciprocates along a predetermined first axis with respect to a massage body.

  Massage can improve the poor circulation of the body and is carried out to maintain health. Such a massage is implemented using a massage apparatus, for example. Conventionally, as FIG. 7 shows, the massage apparatus a is provided with the massage main body b and a pair of massage part c pressed on a user, for example.

  The massage part c is connected to a motor (not shown) as a drive source via a power transmission device including a reciprocating mechanism, for example. The massage part c reciprocates along the 1st axis X predetermined with respect to the massage main body b with rotation of a motor.

  However, in the conventional massage device a, for example, when a force from the user acts on the massage part c, the massage part c may move along the first axis X to an unintended position.

  The present invention has been devised in view of the actual situation as described above, and an object of the present invention is to provide a massage device that can hold the position of the massage unit and can suppress massage at a position that is not intended by the user.

  Among the present inventions, the invention according to claim 1 stimulates the user by being reciprocated along a predetermined first axis with respect to the massage body and the massage body while being pressed against the user. A massage unit that provides a massage, and a motor is connected to the massage unit via a power transmission device, and the power transmission device is rotationally driven by the motor and has an endless spiral trajectory. A formed first shaft, and a slide member that reciprocates along the first axis by rotation of the first shaft by being guided by the track of the first shaft while being prevented from rotating, The track has a lead angle larger than 45 ° with respect to the axis of the first shaft, and the massage portion is provided on the slide member. To.

  The invention according to claim 2 further includes a moving unit that reciprocates along the second axis in a direction intersecting the first axis with respect to the massage body, the slide member, the power transmission device, and The massage apparatus according to claim 1, wherein the motor is provided in the moving unit.

  According to a third aspect of the present invention, the power transmission device includes a second shaft disposed in parallel with the first shaft, and the slide member is guided by the track of the first shaft. A first guide portion and a second guide portion slidably mounted on the second shaft, the second shaft being rotationally driven by the motor, and the second guide portion and the second shaft being The second guide unit is configured to rotate the massage unit around a third axis perpendicular to the first axis and the second axis via a rotation direction conversion unit. 2. The massage device according to 2.

  According to a fourth aspect of the present invention, the massage unit includes a support base attached to the slide member so as to be rotatable about the third axis, and the user at a position eccentric from the rotation axis of the support base. The massage device according to claim 3, comprising a substantially hemispherical massaging ball pressed against the body.

  According to a fifth aspect of the present invention, the second guide portion includes a cylindrical portion that is slidably and integrally rotatable with the second shaft, and a gear portion that is coaxial with the cylindrical portion. The massage apparatus according to claim 4, wherein the massage direction conversion unit is a gear transmission unit that integrally includes the rotation direction conversion unit and transmits the rotation of the gear unit to the rotation shaft of the support base.

  According to a sixth aspect of the present invention, the motor is capable of normal rotation and reverse rotation, and the power transmission means includes a gear train that transmits a rotational force of the motor to the first shaft. Is a massage device according to any one of claims 1 to 5, including a final gear mounted on the first shaft via a one-way clutch that transmits a rotational force in only one direction to the first shaft.

  According to the present invention, the power transmission device that couples the massage unit and the motor is guided by the first shaft on which the endless spiral track is formed, the track of the first shaft, and along the first axis. And a slide member that reciprocates. The track has a lead angle larger than 45 ° with respect to the axis of the first shaft, and the massage portion is provided on the slide member. For this reason, even if an external force from a user or the like acts on the massage portion, the endless spiral trajectory of the first shaft becomes a resistance against the external force, and the massage portion does not move along the first axis. Therefore, the movement of the massage unit to a position not intended by the user is suppressed.

It is a perspective view of a massage device showing one embodiment of the present invention. It is a front view of the massage apparatus of FIG. It is a perspective view of a massage part and a power transmission device. It is the expanded view which expand | deployed the 1st shaft along the axis line. It is a perspective view of a massage part. (A) shows the reciprocating movement of the massage part along the first axis, and (b) is an operation explanatory diagram showing the reciprocating movement of the massage part along the second axis. It is a perspective view of the power transmission device of other embodiments. It is a schematic perspective view of the conventional massage apparatus.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
The perspective view of the massage apparatus 1 of this embodiment is shown by FIG. The massage device 1 of the present embodiment is suitably used for massaging the user's back and waist, for example. The massage device 1 is placed on a floor surface or a backrest portion such as a sofa or a chair, for example. The massage device 1 of this embodiment can be carried, for example. However, the massage device 1 of the present invention is not limited to such a form, and may be configured in a chair shape, for example.

  As shown in FIG. 1, the massage device 1 includes a massage body 2 and a massage unit 3. In actual use, a cover or a cushion material (not shown) is attached to the surface of the massage apparatus 1.

  The massage main body 2 has a substantially rectangular shape, and has a concave portion i having an open top, and is configured in a box shape. In the present embodiment, when the massage body 2 is viewed from the plane, the direction along the short side is the first axis X, the direction along the long side is the second axis Y, and the thickness direction of the massage body 2 is Each is defined as a third axis Z.

  The massage unit 3 can reciprocate along the first axis X. A pair of massage portions 3 are provided on the first axis X. Each massage part 3 can reciprocate along the 1st axis line X, respectively. The massage unit 3 of the present embodiment is provided in the moving unit 25. The moving unit 25 can reciprocate along the second axis Y. However, the massage unit 3 may be provided directly on the massage body 2. The moving unit 25 will be described later.

  The top view of the massage apparatus 1 is shown by FIG. In FIG. 2, the casing 26 of the moving unit 25 is removed and shown in phantom lines. As shown in FIG. 2, a first motor 5 is coupled to the massage unit 3 via a power transmission device 4.

  The first motor 5 includes, for example, a rotating shaft 5a that rotates around the first axis X, and a worm gear 5b that is fixed to the rotating shaft 5a. A controller (not shown) is connected to the first motor 5. The controller includes a transformer unit and a control unit that controls the first motor 5 and the like. Further, the first motor 5 can be driven forward and backward by operation of the controller. The controller is also provided with a safety device that stops the first motor 5 when an excessive load is applied to the first motor 5.

  FIG. 3 shows an exploded perspective view of the power transmission device 4. The power transmission device 4 includes a first shaft 6, a second shaft 8, a gear train 9, and a slide member 7 provided with the massage unit 3.

  The first shaft 6 extends along the first axis X, and both end portions thereof are rotatably supported by the moving unit 26 (detailed illustration is omitted).

  An endless spiral track 6 a is formed on the outer peripheral surface of the first shaft 6. FIG. 4 shows a development view along the first axis X of the first shaft 6. The endless spiral track 6a includes a first spiral track 6A that is lightly colored in FIG. 4 and a second spiral track (not colored) 6B that is opposite to the first spiral track 6A. Are connected by the folded portions A and B.

  In the present embodiment, the first spiral track 6A and the second spiral track 6B have the same lead angle θ and have a plurality of intersecting portions 6c. The lead angle θ is set to be greater than 45 ° with respect to the axis of the first shaft 6. Such an endless spiral track 6a is an endless shape that returns from the folded portion A to the folded portion B along the first spiral track 6A, and then returns to the folded portion A again through the second spiral track 6B. is there. On the first shaft 6, a pair of tracks 6 a are formed on both sides of the shaft for the pair of massage parts 3. The track 6a of the present embodiment has a groove shape, but may have a protruding shape.

  The second shaft 8 is arranged in parallel with the first shaft 6. A pin 8 a that protrudes in the radial direction of the shaft is provided at the end of the second shaft 8.

  The gear train 9 of the present embodiment includes a reduction gear 10 that meshes with the worm gear 5 b of the first motor 5, a first direction change gear 11 that meshes with the reduction gear 10, and a second that meshes with the first direction change gear 11. Direction change gear 12.

  In the first direction change gear 11, a spur gear 11 a meshing with the reduction gear 10 and a bevel gear 11 b are integrally formed on the same axis. Similarly, in the second direction changing gear 12, a spur gear 12a meshing with the spur gear 11a and a bevel gear 12b are integrally formed on the same axis.

  The gear train 9 of the present embodiment further includes an intermediate gear 13 that meshes with the bevel gear 11b and a final gear 15 that meshes with the bevel gear 12b. The intermediate gear 13 is fixed to the second shaft 8 and rotates integrally with the second shaft 8. The final gear 15 is fixed to the first shaft 6 via a one-way clutch 14 that transmits rotational force only in one direction.

  The one-way clutch 14 transmits only the rotation of the final gear 15 in a predetermined direction (in this embodiment, when the first motor 5 is rotating forward) to the first shaft 6, and in the opposite direction (in this embodiment) The rotation of the final gear 15 during the reverse rotation of the first motor 5 is not transmitted to the first shaft 6.

  The operation of the gear train 9 configured as described above will be described. For example, when the first motor 5 is rotated forward, the reduction gear 10 rotates around the third axis Z via the worm gear 5b. When the reduction gear 10 rotates, the first direction change gear 11, the second direction change gear 12, and the final gear 15 rotate, and the first shaft 6 rotates about the first axis X via the one-way clutch 14. Similarly, the rotation of the first direction change gear 11 causes the intermediate gear 13 to rotate, and the second shaft 8 also rotates about the first axis X.

  Further, when the first motor 5 is rotated in the reverse direction, the second shaft 8 rotates in the opposite direction to that in the normal rotation due to the same action. However, with respect to the first shaft 6, the final gear 15 idles due to the action of the one-way clutch 14 and does not rotate.

  As shown in FIG. 3, the slide member 7 is provided with a disk-shaped support base 18 and a substantially hemispherical kneading ball 19 provided on the support 18. The kneading balls 19 are pressed against the user's body and give a stimulus.

  Further, the slide member 7 is provided with a first guide portion 16 guided by the track 6 a of the first shaft 6 and a second guide portion 17 attached to the second shaft 8.

  As shown in FIG. 3 or FIG. 5, the first guide portion 16 includes a guide body 16 a having a through hole O into which the first shaft 6 is inserted, and a horizontal hole provided on the side of the through hole O. A cam portion 16b facing inward and fitted into the track 6a, an elastic body 16c such as a spring for pressing the cam portion 16b against the first shaft 6, and a stopper lid 16d for holding the cam portion 16b.

  As shown in FIG. 4, the cam portion 16b has a long oval shape along the track 6a. The cam portion 16b can change the direction around the axis (second axis Y in this example) perpendicular to the axis of the first shaft 6 along the track 6a.

  The second guide portion 17 is provided side by side with the first guide portion 16 in the direction of the second axis Y. The second guide portion 17 is provided to be slidable with the second shaft 8. Accordingly, the slide member 7 is prevented from rotating with respect to the first shaft 6 (first axis X).

  Accordingly, when the first shaft 6 rotates by the normal rotation of the first motor 5, the slide member 7 (cam portion 16b) that is prevented from rotating about the first axis X is moved from the endless spiral track 6a in the first axis X direction. Receive power. Thereby, the slide member 7 and by extension, the massage part 3 move along the first axis X. Further, since the track 6a has an endless spiral shape, the slide member 7 (cam portion 16b) can continuously reciprocate between the folded portions A and B of the track 6a.

  Further, the lead angle θ of the endless spiral track 6a of the first shaft 6 is larger than 45 °. For this reason, even if an external force in the first axis X direction acts on the massage unit 3 from the user or the like, the component force perpendicular to the track 6a of the external force is always smaller than the component force in the direction along the track. Therefore, the 1st shaft 6 cannot be rotated from the massage part 3 side. That is, the massage unit 3 does not move along the first axis X. Therefore, the position of the massage part 3 on the 1st axis line X is hold | maintained, and the massage in the position which a user does not intend is suppressed.

  As shown in FIG. 3 or FIG. 5, the second guide portion 17 of the present embodiment includes a cylindrical portion 17a and a gear portion 17b. The cylindrical portion 17a has an axis along the first axis X. Further, the tubular portion 7 a is extrapolated to the second shaft 8. On the inner peripheral surface of the tubular portion 17a, a guide groove 17c is formed along the axial direction in which the pin 8a of the second shaft 8 can be fitted and the pin can be guided along the first axis X. A bearing 37 is attached to the other end 17 d of the second guide portion 17. The bearing 37 is supported and fixed to the slide member 7. Therefore, even if the slide member 7 is moved in the direction of the first axis X by the first shaft 6, the second guide portion 17 can slide with the second shaft 8, and The rotational force can be transmitted.

  The support shaft 36 of the support base 18 is provided on the slide member 7 so as to be rotatable around the third axis Z, for example. The kneading balls 19 are arranged at a position eccentric from the support shaft 36 of the support base 18. A plurality of kneading balls 19 are arranged on the support base 18. In this case, the shape and size of the kneading balls 19 can be changed. The kneading balls 19 themselves are also provided so as to be rotatable with respect to the support base 18. However, the present invention is not limited to such an embodiment.

  As shown in FIG. 5, the slide member 7 further includes a rotation direction conversion unit 20 that transmits the rotation of the gear unit 17 b to the support shaft 36 of the support base 18. The rotation direction conversion unit 20 includes a third direction conversion gear 21 that is cantilevered along the first axis X, and a support table rotation gear 22 that is fixed to a rotation axis around the third axis Z of the support table 18. including.

  The third direction change gear 21 includes a spur gear 21a that meshes with the gear portion 17b of the second guide portion 17, and a bevel gear 21b that is integrally formed coaxially therewith. The support base rotation gear 22 is a bevel gear and meshes with the bevel gear 21b.

  Such a rotation direction conversion unit 20 rotates the second shaft 8 by forward rotation (or reverse rotation) of the first motor 5, so that the gear portion 17 b of the second guide portion 17, the third direction conversion gear 21, and the rotation gear 22. Then, the support shaft 36 of the support base 18 is rotated. Thereby, the massage part 3 rotates around the third axis Z. Moreover, since the kneading balls 19 are provided at positions eccentric from the support shaft on which the support base 18 rotates, the kneading balls 19 perform various rotations.

  As shown in FIG. 2, a guide rail 28 and a rack gear 28 a are formed along the second axis Y at the bottom of the recess i of the massage body 2. The moving unit 25 has a casing 26. In the casing 26, the slide member 7, the first motor 5, the power transmission device 4 and the like are arranged.

  The casing 26 of the moving unit 25 is further provided with a second motor 27 and a reduction gear train 29 that is linked to the second motor 27.

  The reduction gear train 29 includes a start gear that meshes with a worm gear fixed to the rotation shaft of the second motor 27, and a terminal gear that meshes with the rack gear 28a. If necessary, the rotational force is transmitted therebetween. It is configured to include possible idle gears. For this reason, the casing 26 can move along the second axis Y by driving the second motor 27. The number of gears and the like is not particularly limited as long as the reduction gear train 29 can sufficiently reduce the rotation of the second motor 27 and move the casing 26 at a low speed and with a high torque.

  For example, the massage body 2 is provided with switches 30 (for example, limit switches) that detect the position of the end of the casing 26 that reciprocates at both ends of the recess i in the second axis Y direction. The switch 30 switches between forward rotation and reverse rotation of the second motor 27 every time the casing 26 is detected. Therefore, the casing 26 can reciprocate along the second axis Y as the second motor 27 rotates forward or backward.

  Note that the movement of the moving unit 25 in the second axis Y direction may be similarly performed using a shaft having an endless spiral track, as in the massage unit 3. According to such a configuration, the casing 26 can be reciprocated along the second axis Y by one of the rotations without switching between normal rotation and reverse rotation of the second motor 27.

  The massage unit 3 of the massage device 1 of the present embodiment configured as described above is configured to move back and forth along the first axis X while the first motor shown in FIG. It rotates around the axis Z. When the first motor 5 is reversed, the massage unit 3 is rotated around the third axis Z on the spot by the one-way clutch 14. In addition, in this case, even if an external force is applied to the massage part 3, the endless spiral trajectory of the first shaft becomes a resistance against the external force, and the massage part does not move along the first axis X. Therefore, the movement of the massage unit to a position not intended by the user is suppressed. Such a use mode is particularly effective when the user wants to massage a specific part intensively.

  FIG. 6B shows the massage device 1 in a state where the first motor 5 is rotating forward and the second motor 27 is driving. The massage unit 3 reciprocates along the second axis Y together with the moving unit 25 when the second motor 27 is driven. The massage unit 3 reciprocates along the first axis X when the first motor 5 is rotated forward. For this reason, the massage part 3 reciprocates in an S shape on the plane of the first axis X and the second axis Y. The massage part 3 of this embodiment can also rotate around the third axis Z. In this state, when the first motor 5 is reversed, the massage unit 3 rotates on the spot, reciprocates along the second axis Y, and rotates around the third axis Z.

  FIG. 7 shows another embodiment of the present invention. In this embodiment, a part of the gear train 9 described above is replaced with, for example, an endless belt 32. The endless belt 32 is wound around a pulley 33 attached to the first shaft 6 via a one-way clutch 33 and a pulley 34 fixed to the second shaft 8.

  As mentioned above, although especially preferable embodiment of this invention was explained in full detail, this invention is not limited to embodiment of illustration, It can deform | transform and implement in a various aspect.

DESCRIPTION OF SYMBOLS 1 Massage apparatus 2 Massage main body 3 Massage part 4 Power transmission apparatus 5 1st motor 6 1st shaft 6a Orbit 7 Slide member 8 2nd shaft 9 Gear train 14 One-way clutch 15 Final gear 16 1st guide part 17 2nd guide part 18 Supporting Table 19 Kneading Ball 20 Rotation Direction Conversion Unit 25 Moving Unit X First Axis Y Second Axis Z Third Axis

Claims (6)

A massage apparatus comprising: a massage body; and a massage unit that is pressed against the user and reciprocates along a first axis that is predetermined with respect to the massage body to stimulate the user. ,
A motor is connected to the massage unit via a power transmission device,
The power transmission device is a first shaft that is rotationally driven by the motor and has an endless spiral track formed thereon;
A slide member that reciprocates along the first axis by rotation of the first shaft by being guided by the track of the first shaft while being prevented from rotating,
The track has a lead angle greater than 45 ° with respect to the axis of the first shaft;
The said massage part is provided in the said slide member, The massage apparatus characterized by the above-mentioned. The massage body further includes a moving unit that reciprocates along a second axis in a direction intersecting the first axis,
The massage device according to claim 1, wherein the slide member, the power transmission device, and the motor are provided in the moving unit. The power transmission device has a second shaft arranged in parallel with the first shaft,
The slide member has a first guide portion guided by the track of the first shaft, and a second guide portion slidably mounted on the second shaft,
The second shaft is rotationally driven by the motor,
The second guide part and the second shaft are mounted so that rotational force can be transmitted, and the second guide part moves the massage part to the first axis and the second axis via a rotation direction conversion part. The massage apparatus according to claim 2, wherein the massage apparatus is rotated around a third axis that is orthogonal.   The massage portion is a substantially hemispherical shape that is pressed against the user's body at a position that is eccentric from the rotation axis of the support base, and a support base that is rotatably attached to the slide member about the third axis. The massage apparatus of Claim 3 containing a kneading ball. The second guide portion integrally includes a cylindrical portion that is slidably and integrally rotated with the second shaft, and a gear portion that is coaxial with the cylindrical portion,
The massage apparatus according to claim 4, wherein the rotation direction conversion unit is a gear transmission unit that transmits rotation of the gear unit to the rotation shaft of the support base. The motor is capable of normal rotation and reverse rotation,
The power transmission means includes a gear train that transmits the rotational force of the motor to the first shaft,
The massage apparatus according to any one of claims 1 to 5, wherein the gear train includes a final gear mounted on the first shaft via a one-way clutch that transmits a rotational force in only one direction to the first shaft. .

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