JP2010075264A - Massage machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a massage machine which does not give damage to the skin and prevents development of slacking due to excess displacement of the skin. <P>SOLUTION: When a driving section 17 actuates, a shaft 7 rotates in the forward rotation direction by a predetermined angle. After that, the driving section 17 changes its rotation direction and rotates in the reverse rotation direction. When the shaft 7 rotates in the reverse rotation direction by a predetermined angle, the driving section 17 then rotates in the forward rotation direction again. During the course, the rotation angle of the driving section 17 in the forward rotation direction and the rotation angle of the driving section in the reverse rotation direction are almost identical. The shaft 7 thus carries out a reciprocating rotation movement of a predetermined angle and does not accumulate rotation while changing rotation direction between forward and reverse. With such a configuration, slippage does not occur between a distal end of a brush 5 and the skin while using the massage machine by abutting the distal end of the brush 5 on the skin being the massage object. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a massage device that does not damage the skin to be massaged and that does not apply excessive pulling force to the skin.

  2. Description of the Related Art Conventionally, there is a massager that brings a rotating body into contact with the skin, rubs the skin with the rotating body, stimulates the skin to improve blood circulation, and promotes metabolism of the skin.

  As such a massager, a head that can rotate with respect to a probe that transmits ultrasonic vibrations is provided, unevenness is formed on the surface of the head, and the shape of the unevenness is provided so that the inclination changes with respect to the rotation direction, When the head is rotated in the forward / reverse direction, there is an ultrasonic beauty apparatus in which the concave portion acts to cut the skin surface in the forward rotation direction, and the convex portion acts to strike the skin surface in the reverse rotation direction ( Patent Document 1).

JP 2000-126310 A

  However, in the ultrasonic beauty apparatus as disclosed in Patent Document 1, if the head is applied too strongly to the skin, there is a problem that excessive displacement is applied to the skin, which may cause sagging on the skin. In addition, although the head rotates in the forward and reverse directions, there is a problem that the skin and the head may be rubbed during both the forward and reverse rotations, which may damage the skin.

  In particular, since the massage effect on the skin is changed by forward / reverse rotation, the appropriate rotational speed and rotational speed during forward rotation and the appropriate rotational speed and rotational speed during reverse rotation are usually different, which complicates rotational control. There is a problem. In addition, there is a problem that the hair around the scalp with hair grows around the head.

  The present invention has been made in view of such problems, and it is an object of the present invention to provide a massager that does not damage the skin and does not cause slack due to excessive displacement of the skin. And

  In order to achieve the above-described object, the present invention is joined to a drive unit, a rotation shaft that can be rotated by the drive unit, a control unit that reverses the rotation direction of the rotation shaft in forward and reverse directions, and the rotation shaft. A rotating member that is joined to the rotating member, and the control unit repeatedly changes the rotation direction of the rotating shaft in the forward and reverse directions at substantially the same rotation angle. It is a massage device.

  The drive unit is a pulse motor, and the control unit applies a predetermined number of positive-phase two-phase pulses to the pulse motor, and then supplies the same number of two-phase pulses of opposite phase to the positive-phase two-phase pulses. By giving to the pulse motor, the rotation direction of the rotation shaft may be changed, and the rotation shaft may be reciprocally rotated without increasing or decreasing the rotation angle cumulatively.

  Alternatively, the driving unit is a DC motor, and further includes an angle sensor that detects a rotation angle of the rotating shaft, and the first rotation transmitting unit that rotates according to the rotation of the DC motor and the first rotation. Joined to the third rotation transmission unit, a second rotation transmission unit that contacts the transmission unit and rotates in a direction opposite to the first rotation transmission unit, a third rotation transmission unit that contacts the rotation shaft, and And a moving means for moving the third rotation transmission unit so as to come into contact with either the first rotation transmission unit or the second rotation transmission unit. According to the rotation angle of the rotation shaft obtained by the angle sensor, the moving means contacts the third rotation transmission unit with either the first rotation transmission unit or the second rotation transmission unit. To change the direction of rotation of the rotating shaft Good.

  As for the rotation angle of the said rotating shaft, it is desirable to be the range of 3-90 degrees in a forward / reverse direction, respectively.

  According to the present invention, the brush part that contacts the skin is rotated forward and reverse at the same angle, so that no slip occurs between the skin and the tip of the brush, and therefore the brush does not rub the skin. There is no harm. In particular, when the rotation angle in the forward and reverse directions is 3 to 90 °, an appropriate amount of displacement is given to the skin and no sagging occurs.

  Further, since the brush does not rotate cumulatively, even if it is used on a scalp with hair, the hair does not wrap around the brush, and the scalp can be effectively massaged.

  Further, if a pulse motor is used as the rotation drive unit, no noise is generated due to the rotation of the gear, and the generation of noise can be suppressed even during use. Further, if a direct current motor is used for the drive unit and the rotation direction of the brush is controlled by the position of the rotating member, the motor does not need to rotate forward and backward, so that a massager that is easy to control can be obtained.

  According to the present invention, it is possible to provide a massager that can be used even on a long hair part without causing damage to the skin and without causing sagging due to excessive displacement of the skin. Can do.

  Hereinafter, the massage device 1 concerning embodiment of this invention is demonstrated. FIG. 1 is a perspective view of the massage device 1, and FIG. 2 is a front perspective view of the massage device 1.

  The massage device 1 mainly includes a main body 3, a brush 5, a shaft 7, a rotating body 9, and the like. The main body 3 is a cylindrical member. Inside the main body 3, a control unit 13, an angle sensor 15, a drive unit 17, and the like are built.

  The shaft 7 protrudes from the inside of the main body 3 and is joined to the disk-shaped rotating body 9. The brush 5 is joined to the surface of the rotating body 9 opposite to the side joined to the shaft 7. The tip of the brush 5 is a part in contact with the skin to be massaged. The brush 5 may be any material that is excellent in elasticity and does not damage the skin or the like. For example, synthetic fiber, wool, or the like can be used.

  The shaft 7 is connected to a drive unit 17 inside the main body 3. That is, the shaft 7 can be rotated by the driving unit 17, and the brush 5 joined to the rotating body 9 rotates by operating the driving unit 17.

  The angle sensor 15 detects the rotation angle of the shaft 7. As the angle sensor 15, an existing contact type or non-contact type rotation angle sensor can be used. Information on the rotation angle of the shaft 7 detected by the angle sensor 15 is sent to the control unit 13. The control unit 13 monitors the rotation angle of the shaft 7 and reverses the rotation direction of the driving unit 7 when the shaft 7 rotates by a preset rotation angle.

  That is, when the drive unit 17 is operated and the shaft 7 rotates by a certain angle in the forward rotation direction, the drive unit 17 changes the rotation direction and rotates in the reverse rotation direction. When the shaft 7 rotates by a certain angle in the reverse rotation direction, the drive unit 17 rotates in the forward rotation direction again. At this time, the rotation angle in the forward rotation direction and the rotation angle in the reverse rotation direction of the drive unit 17 are substantially the same. Therefore, the shaft 7 only reciprocates at a constant angle and does not rotate cumulatively while changing the forward / reverse rotation direction.

  For this reason, when using the massager by bringing the tip of the brush 5 into contact with the skin to be massaged, no slip occurs between the tip of the brush 5 and the skin. The details of the relationship between the brush 5 and the skin will be described later.

  The rotation angle of the drive unit 17 is preferably 3 to 90 °, and more preferably 3 to 30 °. This is because if the rotation angle is less than 3 °, almost no massage effect with the brush can be expected, and if it exceeds 90 °, the tip of the brush 5 slips against the skin, which may damage the skin. If the rotation angle of the brush 5 is 30 ° or less, the risk of slipping between the tip of the brush 5 and the skin is low, and the time for one cycle when the rotation direction is changed in the forward and reverse directions can be suppressed.

  The rotation speed of the drive unit 17 is preferably about 120 to 600 rotations per minute. As described above, the tip of the brush 5 does not slip between the skin. Therefore, the skin is slightly pulled in the moving direction of the brush 5 when the brush 5 moves in the forward / reverse direction with its rotational direction reversed. That is, the massage effect by the massage device 1 is not due to friction between the brush 5 and the skin, but is due to the skin being stretched by a predetermined amount in the forward and reverse directions by repeatedly applying a certain amount of displacement to the skin.

  The rotation angle of the massage device 1 may be set and fixed in advance in the control unit 13, and the rotation angle and rotation speed within a predetermined range are set by the operation unit 11 that starts and stops the massage device 1. It may be possible. When the rotation angle is set by the operation unit 11, the control unit 13 is controlled by the set rotation angle, and the drive unit 17 performs forward / reverse rotation with respect to the rotation angle set by the operation unit 11.

  Next, the drive unit 17 will be described. FIG. 3 is a schematic plan view showing the structure of the drive unit 17, and FIG. 4 is a partial schematic view of the drive unit 17.

  The drive unit 17 mainly includes a rotor 23, stators 19 and 21, and the like. The rotor 23 is alternately provided with N-pole and S-pole permanent magnets around it. Further, the shaft 7 is joined to the center of the rotor 23 and is rotatable about the shaft 7. That is, when the rotor 23 rotates, the shaft 7 rotates.

  As shown in FIG. 3, a plurality of stators 19 are installed at predetermined intervals in the circumferential direction of the upper surface of the rotor 23. A coil is wound around the center of the stator 19, and when a current is passed through the coil, a magnetic force corresponding to the direction of the current is generated at both ends of the stator 19.

  Similarly, a plurality of stators 21 are installed at predetermined intervals in the circumferential direction of the lower surface of the rotor 23. As shown in FIG. 4, the stator 21 is installed at a position shifted from the stator 19 by a half pitch in the circumferential direction. In FIG. 3, the stators 21a and 21b are indicated by dotted lines, and the other stators 21 are not shown. A coil is wound around the center of the stator 21, and when a current flows through the coil, a magnetic force corresponding to the direction of the current is generated at both ends of the stator 21.

  FIG. 4 is a diagram showing the positional relationship between the stators 19 a and 19 b above the rotor 23 and the stators 21 a and 21 b below the rotor 23. When a current is passed through the stators 19a and 19b in this state, a magnetic force is generated in the magnetic force generators 20a and 20b in both the stators 19a and 19b. For example, when a current is passed so that the magnetic force generator 20a (the left side of the stator 19 in the figure) is the S pole and the magnetic force generator 20b (the right side of the stator 19 in the figure) is the N pole, the N pole of the rotor 23 Is attracted to the south pole of the stator 19 (magnetic force generator 20a). That is, the rotor 23 starts to rotate in the arrow A direction.

  Next, a current is passed through the stator 21 so that the magnetic force generator 22a (left side of the stator 21 in the figure) is an N pole and the magnetic force generator 22b (right side of the stator 21 in the figure) is an S pole. Then, the N pole of the rotor 23 repels the N pole (magnetic force generating part 22a) of the stator 21 and is attracted toward the S pole (magnetic force generating part 22b) of the stator 21. Therefore, the rotor 23 further rotates in the A direction.

  Next, when the current of the stator 19 is stopped, the N pole of the rotor 23 is further drawn toward the magnetic force generation part 22b of the stator 21. Thereafter, when the direction of the current flowing through the stator 19 is reversed and a current is passed so that the magnetic force generator 20a has an N pole and the magnetic force generator 20b has an S pole, the N pole of the rotor 23 is transferred to the magnetic force generator 20b. Gravitate. Therefore, the rotor 23 further rotates in the A direction.

  Similarly, the rotor 23 can be continuously rotated by changing the current direction of the stators 19 and 21. If the control of the current to the stators 19 and 21 is reversed, the rotor 23 rotates in the direction of arrow B. That is, the rotor 23 can be rotated in an arbitrary direction at an arbitrary speed by controlling the on / off and changing timing of the current to the stators 19 and 21. In addition, the motor by the structure of the drive part 17 mentioned above is called a pulse motor.

  Next, the movement of the brush 5 and the skin 25 when the brush 5 is brought into contact with the skin 25 and the rotation operation is performed will be described. FIG. 5A is a schematic diagram showing a state in which a single brush 5 is in contact with the skin 25.

  When the massage device 1 is activated by bringing the tip of the brush 5 into contact with the skin 25 to be massaged, the brush 5 is moved in the direction of arrow C as shown in FIG. Move to. The moving distance from the stop position of the rotating body at this time is represented by X. That is, X is determined by the rotation angle and the rotation diameter of the rotating body.

  When the rotating body moves by X, the contact point between the brush 5 and the skin 25 does not change. That is, the brush 5 does not slip with respect to the skin 25. In this case, as shown in FIG. 5 (b), the tip of the brush 5 is displaced by −X1 while in contact with the skin 25 (in FIG. 5, the displacement to the left side in the figure is in the + direction and to the right side). (The same applies to the direction of displacement.) The skin 25 is pulled by the brush 5 from the contact position with the brush 5 and is displaced by X2. That is, the skin 25 is pulled by X2.

  Next, the rotation direction of the rotating body changes and rotates in the opposite direction. That is, the rotating body moves in the direction of arrow D as shown in FIG. The moving distance from the stop position at this time is -X.

  Even when the rotating body moves by -X, the contact point between the brush 5 and the skin 25 does not change. That is, the brush 5 does not slip with respect to the skin 25. In this case, as shown in FIG. 5C, the tip of the brush 5 is displaced by X1 while being in contact with the skin 25. The skin 25 is pulled by the brush 5 from the contact position with the brush 5, and -X2 Displace only. That is, the skin 25 is pulled by X2.

Here, if the deformation of the brush 5 is regarded as the deformation of the elastic body and the hook law is established in the relationship between the force and the displacement, the following equation (1) is established.
F1 = −k1 × X1 (1)
Here, F <b> 1 is a contact portion between the brush 5 and the skin 25, and indicates a restoring force that the brush 5 tries to restore against displacement, and k <b> 1 is a spring constant of the brush 5.

Further, the following formula (2) is established in the skin 25 at the contact portion with the brush 5.
F2 = −k2 × X2 (2)
Here, F <b> 2 is a contact portion between the brush 5 and the skin 25, and indicates a restoring force that the skin 25 tries to restore against displacement, and k <b> 2 is a spring constant of the skin 25.

Since the respective forces are balanced at the contact portion between the tip of the brush 5 and the skin 25, the following equation (3) is established.
k1xX1 = k2xX2 (3)

Further, since X = −X1 + X2, the following expression (4) is established.
X2 = X / ((k2 / k1) +1) (4)

  Therefore, when k2 is large with respect to k1, that is, when the skin 25 is hard against the brush 5, X2 becomes small, so that the skin 25 is not excessively displaced. When k2 is smaller than k1, that is, when the skin 25 is soft with respect to the brush 5, the skin 25 is given a displacement amount of X at the maximum and a force of k1xX is given at the maximum. Stay.

  Accordingly, by preventing slippage between the brush 5 and the skin 25, it is not necessary to consider the friction between the skin 25 and the brush 5, and by selecting an efficient brush 5 according to the skin 25. Therefore, excessive skin displacement (tensile) and excessive force are not applied to the skin 25. If the spring constant k2 is about 50 N / M (about 10 g weight and 2 mm displacement), the spring constant k1 is preferably 20 N / M to 50 N / M. X is preferably 3 to 10 mm depending on the site. In an animal body, not a human face, the spring constant k1 is desirably 300 N / M or more depending on the part.

  As described above, according to the massage device 1 according to the first embodiment, the skin 25 can be effectively massaged. Since the massage device 1 repeats rotation at the same angle in the forward and reverse directions, the tip of the brush 5 does not rotate cumulatively with respect to the skin 25, and no slip occurs. The sagging is not given and the skin 25 is not damaged by the brush 5. In addition, even for long-haired animals and scalp with hair, etc., the brush only reciprocates at a predetermined angle, so that the hair does not wrap around the rotating body and effectively massages. Can do. Therefore, a massager particularly suitable for animals can be obtained.

  Since relative slip does not occur between the brush 5 and the skin 25, it is not necessary to consider (dynamic) friction between the skin 25 and the brush 5, and an appropriate spring constant according to the hardness of the skin 25. If the brush 5 which has this is selected, a massage can be performed efficiently.

  In addition, if a pulse motor as shown in FIGS. 3 and 4 is used for the drive unit 17, it can be rotated in any direction, forward and reverse, and since no gear is used, the massage is excellent in quietness. A container 1 can be obtained. In addition, when a certain force or more is applied to the brush object, the motor slips and no more force is applied to the object. Therefore, since the force beyond the predetermined force does not reach the object, the object is not damaged or the skin is not slackened.

  Next, a second embodiment will be described. The second embodiment is different from the first embodiment in the drive unit. FIG. 6 is a diagram showing the structure of the drive unit 30.

  The drive unit 30 mainly includes a DC motor (not shown), a drive roller 32, a forward rotation roller 35, a reverse rotation roller 37, a movable roller 39, and the like.

  A direct current motor is an existing motor and always rotates in a certain direction. The rotational force of the DC motor is transmitted to the drive roller 33 via the motor output shaft 31 (in the direction of arrow E). That is, the drive roller 33 rotates in the same direction as the DC motor.

  The rotational force of the drive roller 33 is transmitted to the positive rotation roller 35 (in the direction of arrow F). That is, the normal rotation roller 35 rotates in the opposite direction to the DC motor (hereinafter, this rotation direction is referred to as normal rotation). The forward rotation roller 35 comes into contact with the reverse rotation roller 37 and the rotational force is transmitted. Therefore, the reverse rotation roller 37 rotates in the direction opposite to the normal rotation direction (hereinafter referred to as the reverse rotation direction) (arrow G direction).

  The movable roller 39 can move so as to come into contact with either the forward rotation roller 35 or the reverse rotation roller 37. A method for moving the movable roller 39 will be described later. FIG. 6A is a diagram showing a state in which the movable roller 39 is in contact with the positive rotation roller 35. That is, the movable roller 39 moves in the direction of arrow H, contacts the forward rotation roller 35, and rotates in the direction of arrow I (reverse rotation direction).

  The movable roller 39 is in contact with the rotating roller 41 at the same time. The rotating roller 41 is integrated with the shaft 7. Therefore, the rotational force transmitted from the movable roller 39 is transmitted to the shaft 7 via the rotating body roller 41 and rotates in the forward rotation direction (arrow J direction).

  As shown in FIG. 6B, when the movable roller 39 moves in the arrow K direction, the movable roller 39 contacts the reverse rotation roller 37 and rotates in the arrow L direction (forward rotation direction). The movable roller 39 is in contact with the rotating roller 41 at the same time. Therefore, the rotational force transmitted from the movable roller 39 is transmitted to the shaft 7 via the rotating body roller 41 and rotates in the reverse rotation direction (arrow M direction). Accordingly, the rotational direction of the shaft 7 can be changed forward and backward according to the position of the movable roller 39.

  Next, a method for moving the movable roller 39 will be described. FIG. 7 is a schematic diagram of moving means for moving the movable roller 39. As shown in FIG. 7A, the movable roller 39 has a spring 45 joined to one side, and the spring 45 is connected to the spring fixing surface 43. A blanker 49 such as an iron core is connected to the other side of the movable roller 39, and a part of the plunger 49 is inserted into the solenoid 47.

  In the state of FIG. 7A, the movable roller 39 is pulled in the direction of arrow H by the spring 45. In this state, the movable roller 39 is pressed against the forward rotation roller 35, and the movable roller 39 transmits the rotational force from the forward rotation roller 35 to the rotation roller 41.

  On the other hand, when a current is passed through the solenoid 47 and the plunger 49 is pulled into the solenoid 47, the movable roller 39 overcomes the tensile force of the spring 45 and moves in the direction of arrow K as shown in FIG. In this state, the movable roller 39 is pressed against the reverse rotation roller 37, and the movable roller 39 transmits the rotational force from the reverse rotation roller 37 to the rotation roller 41. As described above, the rotation direction of the shaft 7 can be changed by turning on and off the energization of the solenoid 47.

  According to the drive part 30 concerning 2nd Embodiment, the effect similar to the massage device 1 which has the drive part 17 concerning 1st Embodiment can be acquired. In addition, since a general DC motor can be used as the motor and it is not necessary to change the rotation direction of the motor itself, the rotation direction in the forward and reverse directions can be controlled with a simple configuration.

  As mentioned above, although embodiment of this invention was described referring an accompanying drawing, the technical scope of this invention is not influenced by embodiment mentioned above. It is obvious for those skilled in the art that various modifications or modifications can be conceived within the scope of the technical idea described in the claims, and these are naturally within the technical scope of the present invention. It is understood that it belongs.

The perspective view which shows the massage device 1. FIG. The front perspective view of the massage device 1. FIG. FIG. 3 is a schematic plan view showing the structure of a drive unit 17. FIG. 6 is a schematic front view showing the structure of the drive unit 17. The conceptual diagram which shows the displacement relationship of the brush 5 and the skin 25. FIG. FIG. 3 is a schematic diagram showing a configuration of a drive unit 30. The schematic diagram which shows the movement method of the movable roller 39. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ......... Massage device 3 ......... Main body 5 ......... Brush 7 ......... Axis 9 ......... Rotating body 11 ......... Operation part 13 ......... Control part 15 ......... Angle sensor 17 ......... Driving Sections 19a, 19b ......... Stator 21a, 21b ......... Stator 23 ......... Rotor 25 ... ... Skin 30 ... ... Drive unit 31 ... ... Motor output shaft 33 ... ... Drive roller 35 ... ... Forward rotation roller 37 ... Reverse rotation roller 39 ... Movable roller 41 ... Rotary body roller 43 ... Spring fixing surface 45 ... Spring 47 ... Solenoid 49 ... Plunger

Claims (4)

A drive unit;
A rotating shaft rotatable by the drive unit;
A control unit that reverses the rotation direction of the rotation shaft in the forward and reverse directions;
A rotating member joined to the rotating shaft;
A brush part joined to the rotating member;
Comprising
The said control part repeatedly changes the rotation direction of the said rotating shaft to a normal / reverse direction with the substantially same rotation angle, The massage device characterized by the above-mentioned. The driving unit is a pulse motor;
The controller supplies the pulse motor with a fixed number of positive-phase two-phase pulses, and then supplies the pulse motor with two-phase pulses having the same number of opposite phases as the positive-phase two-phase pulses. The massaging device according to claim 1, wherein the rotation direction of the shaft is changed, and the rotation shaft is reciprocally rotated without increasing or decreasing the rotation angle cumulatively. The drive unit is a DC motor;
An angle sensor for detecting a rotation angle of the rotation shaft;
A first rotation transmission unit that rotates in accordance with the rotation of the DC motor;
A second rotation transmission unit that contacts the first rotation transmission unit and rotates in a direction opposite to the first rotation transmission unit;
A third rotation transmission portion in contact with the rotation shaft;
A moving unit joined to the third rotation transmission unit and moving the third rotation transmission unit so as to contact either the first rotation transmission unit or the second rotation transmission unit;
Comprising
In accordance with the rotation angle of the rotation shaft obtained by the angle sensor, the control unit causes the moving means to transfer the third rotation transmission unit to the first rotation transmission unit or the second rotation transmission. The massaging device according to claim 1, wherein the massaging device is moved so as to come into contact with any one of the parts, and the rotation direction of the rotation shaft is changed.   The massager according to any one of claims 1 to 3, wherein a rotation angle of the rotation shaft is in a range of 3 to 90 degrees in the forward and reverse directions.

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