JP3809645B2 - Rotary massager - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rotary massager that can take a plurality of massage forms.
[0002]
[Problems to be solved by the invention]
Conventionally, as this type of rotary massager, for example, Japanese Patent Publication No. 60-36295 and Japanese Patent Publication No. 56-35463 are known. In the former, a plurality of rollers rotatably attached to the outer peripheral portion of the drum are caused to make a circular motion around the rotation axis of the drum. In the latter, a pair of rubbing tools that are attached to be inclined with respect to the rotation axis are rotated about the rotation axis. And any massage device rotates a treatment part centering | focusing on a rotating shaft, and irritate | stimulates an affected part.
[0003]
However, each of these massagers has an excellent therapeutic effect, but it can only give one kind of stimulus, so there is a risk that the treatment becomes monotonous.
[0004]
In order to solve this problem, the present applicant has previously developed a rotary massager capable of performing a plurality of massage operations. Switching This means that the co-Driving rotating shaft by forward and reverse rotatable motor, comprising a first and second cam body to switch the eccentricity between a center of the massaging wheels support the rotation shaft by the rotation direction of the motor By providing a mechanism and switching the rotational direction of the electric motor to switch the positional relationship between the squeezing wheel and the rotating shaft to be concentric or eccentric, it is possible to squeeze or strike the human body.
[0005]
However , in this rotary massager, a phenomenon may occur in which the first and second cam bodies are rotated by friction between the first cam body and the second cam body in the switching mechanism when there is no load. is there. For this reason, when no load is applied, it is difficult to determine which massage operation is performed from the appearance, and there is a possibility that a massage operation unintended by the user may be given to the affected part.
[0006]
An object of the present invention is to solve the above-described problems and to provide a rotary massage device that can reliably switch the operation even when there is no load.
[0007]
[Means for Solving the Problems]
The rotary massage device according to claim 1 of the present invention includes an electric motor, a rotating shaft driven by the electric motor, a roller body provided on the rotating shaft, and a treatment unit attached to the roller body. In the rotary massager, a first cam body attached eccentrically to the rotating shaft and a second cam body attached to the mouth-ra body is provided with a control circuit for controlling the rotation of the electric motor in the forward and reverse directions. And a switching mechanism for switching the eccentric distance between the rotation shaft and the center of the roller body according to the rotation direction of the electric motor, and a switching auxiliary mechanism for regulating the rotation of the first cam body and the second cam body. And the switching assist mechanism is engaged with a third cam body fixedly attached to the rotating shaft, a fourth cam body interlocking with the second cam body, and the fourth cam body. Above 1 is made of comprises a rotation restricting means for restricting the rotation of the fourth cam member during non-engagement of the cam member and the second cam member.
[0008]
Rotary massager according to claim 1 is the above configuration, when the motor starts to rotate, the first cam member is rotated to rotate the driven of said rotary shaft, said second cam member is the switching after idle with respect to said first cam member by the auxiliary mechanism, starts rotated in contact with the first cam member in the other abutment. Further, with the above configuration, when the electric motor starts to rotate, the first and third cam bodies rotate following the rotation of the rotating shaft, and the second and fourth cam bodies rotate with the first and first cam bodies. The second and fourth cam bodies rotate by being driven by the rotation of the three cam bodies. The second and fourth cam bodies are idled while the driven rotation is restricted by the rotation restricting means, and the first cam body and the second cam body. Starts to rotate with the first and third cam bodies again.
[0009]
The rotary massage device according to claim 2 of the present invention is the rotary massage device according to claim 1, wherein the rotation restricting means is slidable in a vertical direction in the guide body having a guide hole and the guide hole. And a slide body formed with a cam hole having a substantially flat cam surface at the bottom, and a spring body that urges the slide body upward, facing the cam hole of the slide body The third and fourth cam bodies are positioned, and a substantially planar cam surface that engages with the cam surface of the slide body is formed on the fourth cam body .
[0010]
According to a second aspect of the present invention, when the rotary massager according to the second aspect of the present invention starts a different massage operation by switching the rotation direction of the electric motor, the first and third cam bodies rotate following the rotation of the rotary shaft. The second and fourth cam bodies rotate following the rotation of the first and third cam bodies, but the cam surface formed on the fourth cam body abuts on the cam surface of the slide body. The driven rotation of the second and fourth cam bodies is regulated by the slide body and idles. Thereafter, the second and fourth cam bodies start to rotate again together with the first and third cam bodies when the first cam body and the second cam body come into another contact state. To do.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. 1 to 6 show an embodiment of the invention. In the figure, reference numeral 1 denotes an apparatus main body having an opening 2 formed in the upper part. Inside the apparatus main body 1, an electric motor 5 having a worm 4 attached to a drive shaft 3, a rotating shaft 7 having an attached worm wheel 6 meshing with the worm 4 of the electric motor 5, and an attaching to the rotating shaft 7 Switching mechanism 8, 8 ′, a pair of squeezing wheel supports 9, 9 ′ attached to the switching mechanism 8, 8 ′ and rotating in accordance with the rotation of the rotary shaft 7, and the squeezing wheel support 9 , 9 'are provided with a pair of squeezing wheels 10, 10' which are attached to be inclined. The stagnation transport 10, 10 'is attached to the stagnation transport support 9, 9' via an idle mechanism 11 such as a bearing. Further, in the vicinity of the switching mechanisms 8 and 8 ', switching auxiliary mechanisms 12 and 12' are provided for surely switching the switching mechanisms 8 and 8 '. The switching mechanisms 8 and 8 'are attached to the rotating shaft 7 so as to be in opposite phases. Reference numeral 13 denotes a control circuit, which operates the operation switch 15 of the operation unit 14 provided separately from the apparatus main body 1 to selectively switch the electric motor 5 in the forward direction or the reverse direction to control the rotation. Is. Reference numeral 16 denotes a cover made of cloth or the like that is attached to the opening 2 and covers the rubbing wheel 10, and 17 is a bearing that supports both ends of the rotating shaft 7.
[0012]
Next, the switching mechanisms 8, 8 ′ and the switching auxiliary mechanisms 12, 12 ′ will be described. The switching mechanisms 8 and 8 'have the same structure except that they are in opposite phases. Similarly, since the switching auxiliary mechanisms 12 and 12' have the same structure, only the switching mechanism 8 and the switching auxiliary mechanism 12 will be described. The description of the switching mechanism 8 ′ and the switching auxiliary mechanism 12 ′ will be omitted. The switching mechanism 8 includes a first cam body 20 that is attached to the rotating shaft 7 and a second cam body 21 that is driven by the first cam body 20. The first cam body 20 includes a guide portion 22 formed in a substantially disc shape, a mounting hole 23 to be fitted to the rotary shaft 7, and a cam portion 24 protruding in the axial direction of the rotary shaft 7. . The mounting hole 23 is formed eccentrically by a distance A from the center of the first cam body 20, and the cam portion 24 is integrally formed around the mounting hole 23. A pair of contact surfaces 25 and 25 ′ are formed on the side surface of the cam portion 24. The second cam body 21 includes a disk portion 26 and a substantially circular cam hole 27 having substantially the same diameter as the outer peripheral surface of the guide portion 22 of the first cam body 20. The cam hole 27 is formed eccentric from the center of the second cam body 21 by a distance A substantially equal to the eccentric distance from the center of the guide portion 22 of the first cam body 20 to the mounting hole 23. In addition, the cam hole 27 is formed with a protrusion 28 on which the contact surfaces 25 and 25 'abut. The protrusion 28 is in contact with the contact surface 25 in a state where the center of the rotating shaft 7 and the second cam body 21 coincide (a in FIG. 3), and the center of the rotating shaft 7 and the second cam body 21 is The contact surface 25 ′ is formed so as to contact in the most distant state (e in FIG. 3). A switching auxiliary mechanism 12 is provided adjacent to the switching mechanism 8.
[0013]
The switching assist mechanism 12 includes a third cam body 29, a fourth cam body 30, and a rotation restricting means 18 for the fourth cam body 30. The rotation restricting means 18 includes a guide body 31, a slide body 32, and a spring body 33. The third cam body 29 is formed in a substantially rectangular shape, and the short sides facing each other are arc portions 34 and 34 ′ formed by arcs of the same circle. The third cam body 29 is provided with a mounting hole 35. The mounting hole 35 is formed eccentrically by the eccentric distance A of the first cam body 20 in the direction perpendicular to the long side of the third cam body 29 from the center of the circle forming the arc portions 34 and 34 ′. Yes. The fourth cam body 30 is formed concentrically and integrally with the cam hole 27 of the second cam body 21. The fourth cam body 30 is formed in an oval shape by notching a part of a circle having the same diameter as the circle forming the arc portions 34 and 34 ′ of the third cam body 29 in a straight line. The side surfaces of the fourth cam body 30 are a circumferential surface 36 and a planar cam surface 37 cut out linearly. After the first cam body 20 is attached to the cam hole 27 of the second cam body 21, the third cam body 29 is fixed concentrically with the first cam body 20. Further, a guide body 31 having a substantially rectangular guide hole 38 is provided inside the apparatus main body 1. A spring body receiver 39 is formed below the guide hole 38 of the guide body 31. A slide body 32 is attached to the guide hole 38 so as to be slidable in the vertical direction. The slide body 32 is formed with a cam hole 40 into which the third cam body 29 and the fourth cam body 30 are inserted, and a spring body receiver 41 is formed at the lower portion.
[0014]
Further, a substantially flat cam surface 42 is formed at the lower portion of the cam hole 40. A spring body 33 made of a compression spring is attached between the spring body receivers 39 and 41 to urge the slide body 32 upward. A plurality of engagement holes 44 are formed in the axial direction on the outer peripheral portion of the second cam body 21, and a plurality of engagement protrusions 45 formed on the squeezing wheel support 9 are formed in the engagement holes 44. Has been inserted.
[0015]
Next, the operation of this embodiment will be described. The switching mechanisms 8 and 8 'and the switching auxiliary mechanisms 12 and 12' perform substantially the same operation. Only the switching mechanism 8 and the switching auxiliary mechanism 12 will be described, and the switching mechanisms 8 'and 12'. The explanation of the operation is omitted. First, when the user operates the operation switch 15, the motor 5 is rotated in an arbitrary rotation direction by the control circuit 13. In FIG. 3, when the electric motor 5 is rotated in the forward direction, the rotating shaft 7, that is, the first cam body 20 rotates counterclockwise. Therefore, the positional relationship between the first cam body 20 and the second cam body 21 is such that the contact surface 25 of the first cam body 20 is in the second state after the state e in FIG. The state a in FIG. 3 is brought into contact with the protruding portion 28 of the cam body 21. As a result, the eccentric direction of the rotating shaft 7 with respect to the center of the first cam body 20 and the eccentric direction of the cam hole 27 with respect to the center of the second cam body 21 are opposite to each other, and the center of the rotating shaft 7 and the center of the second cam body 21 are reversed. Match. When the first cam body 20 further rotates in this state a, the second cam body 21 starts to rotate counterclockwise following the rotation of the first cam body 20. As a result, the rubbing wheel 10 rotates concentrically with the rotating shaft 7. Since the squeezing wheels 10 and 10 'are positioned so as to have opposite phases, the squeezing wheels 10 and 10' rotate concentrically while maintaining the opposite phases. Since the idling mechanism 11 is provided between the squeezing wheel support 9, 9 'and the squeezing wheel 10, 10', when the human body or the like is pressed against the squeezing wheel 10, 10 ', As a result, idling operation is performed in which only the interval between the rubbing wheels 10 and 10 ′ changes. Therefore, itching can be performed on the affected area of the human body by pressing the itching rings 10 and 10 'against the affected area of the human body and operating the operation switch 15 to rotate the electric motor 5 in the forward direction.
[0016]
On the other hand, when the electric motor 5 is rotated in the reverse direction, the rotating shaft 7, that is, the first cam body 20 rotates clockwise. Therefore, the positional relationship between the first cam body 20 and the second cam body 21 is a diagram in which the abutting surface 25 ′ abuts against the protrusion 28 through the states a, b, c, and d in FIG. 3. 3 is in state e. As a result, the eccentric direction of the center of the rotating shaft 7 with respect to the center of the first cam body 20 and the eccentric direction of the center of the cam hole 27 with respect to the center of the second cam body 21 coincide with each other. The center of the two-cam body 21 is eccentric by a distance 2A. When the first cam body 20 further rotates in this state e, the second cam body 21 starts to rotate clockwise following the rotation of the first cam body 20. As a result, the squeezing wheel 10 rotates with a distance of 2 A from the center of the rotating shaft 7. Since the switching mechanisms 8 and 8 ′ are in opposite phases with respect to the rotation shaft 7, the squeezing wheel supports 9 and 9 ′ are decentered in the opposite directions with respect to the rotation shaft 7, and the stagnation The rings 10 and 10 'are also positioned so as to have opposite phases. Therefore, the squeezing wheels 10 and 10 'are eccentrically rotated in the opposite direction with respect to the rotating shaft 7 and kept in the opposite phase. Since the idling mechanism 11 is provided between the rubbing wheel support 9, 9 'and the rubbing wheels 10, 10', the rubbing wheel 10, 10 'is idling when a human body or the like is pressed against the rubbing wheel. As a result, the kneading wheels 10, 10 ′ alternately move up and down to strike the human body. Therefore, it is possible to hit and massage the affected part of the human body by pressing the grind wheels 10 and 10 'against the affected part of the human body and operating the operation switch 15 to rotate the electric motor 5 in the reverse direction.
[0017]
Thus positional relationship between the rotation shaft 7 of kneading the wheels 10, 10 'by switching the rotation direction of the motor 5 instead Ri switching concentrically or eccentrically, different massage and tapping massage rubbing performed on the human body of the affected part Massage operation becomes possible. Further, by switching the massage operation, that is, by switching the rotation direction of the electric motor 5, during the forward rotation of the electric motor 5, from the state e in FIG. 3 to the state a in FIG. Between the state a and the state e in FIG. 3, the cam portion 24 of the first cam body 20 is temporarily separated from the projection portion 28 of the second cam body 21, but the stagnation wheel having the second cam body 21 is included. A fourth cam 30 is formed on the support bodies 9 and 9 ′. The fourth cam 30 abuts on a slide body 32 that is assembled to the guide body 31 so as to be movable up and down, and between the guide body 31 and the slide body 32. Since the slide body 32 always presses the fourth cam 30 by the spring body 33 interposed between the first cam body 20 and the third cam body 29 fixed to the first cam body 20. Rotates with the rotary shaft 7 and this first and The second and fourth cam bodies 21 and 30 rotate slightly following the rotation of the third cam bodies 20 and 29, but the cam surface 37 of the fourth cam body 30 is formed in the cam hole 40 of the slide body 32. When the cam surface 42 abuts, the slide body 32 that presses the fourth cam body 30 restricts the driven rotation of the fourth cam body 30 and thus the second cam body 21. For this reason, although the 1st and 3rd cam bodies 20 and 29 rotate, the 2nd and 4th cam bodies 21 and 30 idle | spin, and it can prevent the stagnation wheel 10 and 10 'accompanying rotation. Then, the cam part 24 of the first cam body 20 and the protrusion 28 of the second cam body 21 come into contact with each other and the first cam body 20 and the second cam body 21 are engaged with each other in the state a and FIG. In state e, the first, second, third, and fourth cam bodies 20, 21, 29, and 30 rotate in unison according to the rotation of the rotating shaft 7. At this time, as shown in FIG. 4, the third and fourth cam bodies 29, 30 are connected continuously with the arc portions 34, 34 ′ of the third cam body 29 and the circumferential surface 36 of the fourth cam body 30. Since the arc portions 34 and 34 ′ of the third cam body 29 protrude from the cam surface 37 of the fourth cam body 30, the cam surface 37 of the fourth cam body 30 and the cam surface 42 of the slide body 32 Will not abut. And after the cam part 24 of the 1st cam body 20 and the projection part 28 of the 2nd cam body 21 contact | abut, it rotates with the 3rd cam body 29 and the 4th cam body 30 maintaining the state of a perfect circle. Therefore, the rotating shaft 7 rotates smoothly, and the operation after switching is performed reliably.
[0018]
The present invention as described above, the co becomes possible different massage operation of the massage and the tapping massage rubbing performed on the body of the affected part by changing disconnect the rotational direction of the electric motor 5, when changing turn off the massage action , kneading can be prevented accompanying rotation of the wheel 10, 10 ', can be reliably determined by appearance whether operating in massage form of Dochi et al, unintended massage operation of the user will be given to the affected area You can wipe it out. In addition, during the massage operation, the third cam body 29 and the fourth cam body 30 rotate while maintaining a perfect circle, so that the rotating shaft 7 rotates smoothly and the operation after switching is performed reliably. Is called.
[0019]
As mentioned above, although the Example of this invention was explained in full detail, this invention is not limited to each said Example, A various deformation | transformation implementation is possible within the range of the summary of this invention. For example, in the embodiment of the present invention, the switching mechanism includes a first cam body that is eccentrically attached to the rotating shaft, and a second cam body in which the cam hole is formed with the same eccentric amount as the eccentric amount of the first cam body. However, the switching mechanism may have a structure other than this. In addition, the switching mechanism of the present embodiment is switched by rotating the first cam body by 180 degrees. However, the switching mechanism does not necessarily have to be switched by rotating by 180 degrees. It may be switched by doing so. In this embodiment, the switching mechanism is provided in the opposite phase with respect to the rotation axis. However, when the switching mechanism is in the same phase, that is, when one squeezing wheel is in the high position, the other squeezing wheel is also in the high position. It may be provided as follows. In this case, the squeezing wheel performs a combined operation of the squeaking operation and the hitting operation that moves up and down simultaneously when the electric motor rotates in the reverse direction.
[0020]
【The invention's effect】
According to the rotary massage device of the first aspect of the present invention, the rotary massage device includes an electric motor, a rotating shaft driven by the electric motor, a roller body provided on the rotating shaft, and a treatment unit attached to the roller body. In the rotary massager that is provided, a control circuit that controls the rotation of the electric motor in the forward direction and the reverse direction is provided, and a first cam body that is eccentrically attached to the rotation shaft and a second cam body that is attached to the mouth-ra body. A switching auxiliary mechanism that is configured by a cam body and that switches an eccentric distance between the rotation shaft and the center of the roller body according to the rotation direction of the electric motor and that regulates the accompanying rotation of the first cam body and the second cam body. A third cam body fixedly attached to the rotating shaft, a fourth cam body interlocking with the second cam body, and an engagement with the fourth cam body. Let Rotation restricting means since it is made comprises a regulating the rotation of the fourth cam member during non-engagement of the second cam member and said first cam member, when the motor starts to rotate, the first the cam member rotates to rotate the driven of the rotary shaft, but the second after cam body which idles with respect to the first cam member by said switching auxiliary mechanism, other of said first cam member in a contact state since starting the driven rotation in contact with the wipe out that can be reliably determined by appearance whether operating in massage form of Dochi et al, unintended massage operation of the user will be given to the affected area it can. Further, when the electric motor starts to rotate, the first and third cam bodies rotate following the rotation of the rotating shaft, and the second and fourth cam bodies rotate by the rotation of the first and third cam bodies. The cam surface of the fourth cam body comes into contact with the cam surface of the cam hole, so that the driven rotation of the second and fourth cam bodies is regulated and idles. Since the driven rotation starts in contact with the first and third cam bodies in the contact state, the second cam body, and thus the roller body, can be reliably prevented from being rotated, and the operation after switching can be performed reliably. Is called.
[0021]
According to a rotary massage device according to claim 2, in the rotary massage device according to claim 1, the rotation restricting means is assembled to a guide body having a guide hole and to be slidable in the vertical direction in the guide hole. And a slide body formed with a cam hole having a substantially flat cam surface at the bottom, and a spring body that urges the slide body upward, facing the cam hole of the slide body and When the massage operation is switched, the fourth cam body is formed by positioning the third and fourth cam bodies and forming the substantially flat cam surface engaged with the cam surface of the slide body on the fourth cam body. After the cam surfaces of the first and second cam bodies are in contact with the cam surfaces of the cam holes, the driven rotation of the second and fourth cam bodies is restricted, and the first and third cam bodies are in contact with each other. Since the cam body and driven rotation start, simple The second cam body structure, can be more reliably prevented accompanying rotation of the turn roller body.
[Brief description of the drawings]
FIG. 1 is a sectional view of an embodiment of the present invention during forward rotation.
FIG. 2 is a cross-sectional view of the embodiment of the present invention during reverse rotation.
FIG. 3 is an explanatory diagram of a switching mechanism according to an embodiment of the present invention, in which FIG. 3 (a) shows a state in which an engaging portion is engaged with one abutting surface, and FIGS. FIG. 3C shows a state where the engaging portion is separated from one abutting surface, and FIG. 3E shows a state where the engaging portion is engaged with the other abutting surface.
4A and 4B are explanatory diagrams of a switching auxiliary mechanism according to an embodiment of the present invention, in which FIG. 4A shows a state in which an engaging portion is engaged with one abutting surface, and FIG. 3 (c) shows a state in which the engaging portion is separated from one abutting surface, and FIG. 4 (e) shows a state in which the engaging portion is engaged with the other abutting surface.
FIG. 5 is an external view of an embodiment of the present invention.
FIG. 6 is an exploded perspective view of a switching mechanism and a switching auxiliary mechanism according to an embodiment of the present invention.
[Explanation of symbols]
1 Device body 8, 8 'Switching mechanism 9, 9' Stirring wheel support (roller body)
12, 12 ′ Switching assist mechanism 18 Rotation restricting means 20 First cam body 21 Second cam body 29 Third cam body 30 Fourth cam body 31 Guide body 32 Slide body 33 Spring body 34, 34 ′ Arc portion 36 Circumferential portion 37 Cam surface 38 Guide hole 40 Cam hole 42 Cam surface

Claims (2)

In a rotary massager comprising an electric motor, a rotating shaft driven by the electric motor, a roller body provided on the rotating shaft, and a treatment unit attached to the roller body, the electric motor is moved forward and backward. A control circuit for controlling rotation in a direction, and a first cam body that is eccentrically attached to the rotation shaft and a second cam body that is attached to the mouth-ra body, and the rotation shaft depends on the rotation direction of the motor. A switching mechanism for switching the eccentric distance between the roller body and the center of the roller body, and a switching assist mechanism for regulating the rotation of the first cam body and the second cam body ,
The switching auxiliary mechanism is engaged with the third cam body fixedly attached to the rotating shaft, the fourth cam body interlocking with the second cam body, and the fourth cam body. A rotary massage device comprising a rotation restricting means for restricting the rotation of the fourth cam body when one cam body and the second cam body are not engaged . The rotation restricting means includes a guide body having a guide hole, a slide body which is assembled in the guide hole so as to be slidable in the vertical direction and has a cam hole having a substantially flat cam surface at the bottom, and the slide body And the third and fourth cam bodies are positioned so as to face the cam holes of the slide body, and the fourth cam body is engaged with the cam surface of the slide body. 2. A rotary massager according to claim 1, wherein a substantially flat cam surface is formed .

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