JP3138003U - Rotary massager - Google Patents

Abstract

The present invention provides a rotary massager capable of effectively reducing the rocking caused by the rotation of an eccentric rotating disk for massage.
[Solution]
In the rotary massage device having the peristaltic rotary disk 5 attached eccentrically with respect to the rotation shaft 7a of the motor 7, a counter moment for canceling the swinging moment generated by the eccentric rotation of the peristaltic rotary disk 5 is generated. A balanced weight 6 is provided on the rotating shaft 7a. The structure of the balance weight 6 is a sector disk-shaped body having a center of gravity in the radial direction opposite to the eccentric direction of the peristaltic rotating disk 5 and having a structure opened in a fan shape in the same direction.
[Selection] Figure 1

Description

  The present invention relates to an electric massager using a motor, and more specifically, massage is performed by rotating a peristaltic rotating disk eccentrically by a motor and bringing it into contact with a predetermined part of a human body. It relates to a rotary massage device.

  2. Description of the Related Art Conventionally, an electromagnetic coil is excited by a household AC 100V commercial AC power source to cause vibration in a vibrating piece of the coil, and a peristaltic plate attached to the vibrating piece is brought into contact with a predetermined part of the human body. An electric massager for performing massage is known (for example, Patent Document 1). Since such an electric massager has a simple structure and can be manufactured at low cost, it is widely used for medical use or home use.

  On the other hand, due to dramatic progress in electronic component technology in recent years, motors that are small but have high output and excellent reliability have been supplied to the market at low cost. In addition, with the development of various semiconductors and electronic circuit technology, new technologies such as chopper control and PWM (pulse width modulation) control have been developed for the motor rotation speed control technology. Detailed rotation control is possible.

  Under such a technical background, instead of the conventional vibration type electric massager, a rotary massager using these small motors is gradually spreading. Incidentally, such a rotary massager has a structure that achieves its purpose by rotating the peristaltic rotating disk abutting on the human body eccentrically by a motor in order to apply an effective massage to a predetermined part of the human body. (For example, Patent Document 2).

  Here, the structure of a conventional rotary massage device will be described with reference to FIGS. 5 and 6 of the accompanying drawings. As shown in the perspective view of FIG. 5, the rotary massage device 100 mainly includes a peristaltic rotary disk 101 that abuts on a predetermined part of the human body to give a massage effect, a crankshaft 102, and a motor 103. Yes. And these rotation peristaltic parts are carry | supported by the frame part 104 (details abbreviate | omitted) which are the main bodies of a massage device.

  Since the peristaltic rotary disc 101 is connected to the rotary shaft 103a of the motor 103 via the substantially key-shaped crankshaft 102, the rotary rotary disc 101 performs an eccentric rotary motion as shown in FIG. . Therefore, an effective massage is given to a predetermined part of the human body by abutting the peristaltic rotating disk 101 that performs such an eccentric rotational movement with a predetermined part of the human body such as a shoulder, a thigh, or a waist. It can be done.

Japanese Patent Laid-Open No. 11-332939 Utility Model Registration No. 3110093

  However, as is well known from normal physical laws, when the rotating disk rotates eccentrically in the driving system of the rotating disk, a swing moment y is generated in the rotating disk drive system due to the deviation between the center of gravity of the rotating disk and the rotation axis. To do. As a result, as shown in FIG. 6B, a swinging motion (yawing) is generated in the drive system of the rotating disk, and so-called “swing motion” occurs in the entire rotating drive system including the rotating disk and the drive motor. .

  In a rotary massage machine in which the peristaltic rotating disk rotates eccentrically, when such a swing occurs, the entire massage machine starts the swing motion described above, which hinders ease of use when using the massage machine. It can also be a cause. In particular, when the motor is rotated at a high speed so as to enhance the massage effect, the swinging motion also increases, and there is a possibility that an excessive burden is applied to the hand or arm joint holding the massager.

  The present invention aims to solve such problems. More specifically, in a rotary massage machine, the swinging of the massage machine associated with the eccentric rotation of the peristaltic rotary disk is reduced. An object of the present invention is to realize a rotary massager with improved convenience during use.

  In order to achieve the above-mentioned object, a rotary massager according to a first aspect of the present invention is a rotary massager provided with a peristaltic rotary disk mounted eccentrically with respect to a rotation shaft of a motor. The rotating shaft is provided with a balance weight that generates a counter moment for canceling the swing moment generated by the eccentric rotation of the dynamic rotating disk.

  Therefore, according to such a configuration, when the motor of the rotary massager rotates, a counter moment that cancels the swinging moment generated by the eccentric rotation of the peristaltic rotating disk is generated by the balanced weight attached to the rotating shaft of the motor. Therefore, the swing of the rotary massager can be effectively reduced.

  According to a second aspect of the present invention, in the rotary massager according to the first aspect, the balance weight has a center of gravity in a radial direction opposite to the eccentric direction of the peristaltic rotating disk with respect to the rotation shaft. It is a board-like body having dots.

  Therefore, according to such a configuration, the swing moment generated by the eccentric rotation of the peristaltic rotary disk and the counter moment generated by the rotation of the disk-shaped body having the center of gravity in the direction opposite to the eccentric direction of the peristaltic rotary disk. Can cancel each other, and the swing of the entire massager accompanying the rotation of the motor can be reduced.

  In the rotary massager according to the third aspect of the present invention, in the second aspect, the disk-like body faces a radial direction opposite to the eccentric direction of the peristaltic rotary disk with respect to the rotary shaft. It is a sector disk-shaped body having a structure opened in a fan shape.

  Therefore, according to such a configuration, a fan-shaped disk-shaped body having a structure in which a fan is opened in the radial direction opposite to the eccentric direction of the peristaltic rotating disk is used as the balanced weight. It is possible to effectively generate a counter moment that cancels the swing moment generated by the eccentric rotation of the dynamic rotating disk.

  According to a fourth aspect of the present invention, there is provided a rotary massage device according to any one of the first to third aspects, wherein the controller unit for adjusting the rotational speed of the motor is provided with a frame in which the motor is stored. It is characterized by being provided separately from the part.

  Therefore, according to such a configuration, for example, when using the massager by placing it on a shoulder or the like, the rotational speed can be freely adjusted while visually observing the controller unit placed at hand, Convenience can be improved.

  According to the present invention, it is possible to effectively reduce the swing generated in the rotary massager, so there is no risk of placing an extra burden on the hand or arm holding the massager, and the massage can be performed extremely comfortably. Can be done. Therefore, it is possible to provide a rotary massage that can be used easily and safely even for elderly people and ill-healed persons who have weakened arm strength and muscle strength.

Hereinafter, the best mode for carrying out the present invention will be described with reference to the accompanying drawings of FIGS.
First, FIG. 1 shows a perspective view of the structure of a rotary peristaltic part which is a main part of the rotary massage device 1 according to the present invention. As shown in the figure, the rotary peristaltic part of the rotary massager 1 is mainly composed of a peristaltic part cover 2, a rotary disk cover 3, a rotary disk locking screw 4, an eccentric rotary disk 5, a balance weight 6, It consists of a motor 7 and a frame portion 8.

  The sliding portion cover 2 is a cover member in which a fiber member 2b having toughness such as nylon is stretched on a flexible ring-shaped cover frame 2a such as plastic. When the massage device is used, the peristaltic cover 2 comes into close contact with and covers the eccentric rotating disk 5 covered with the rotating disk cover 3.

  Further, since the fiber member 2b is extremely flexible and is stretched on the cover frame 2a in a loose state, the shape of the cover surface of the sliding portion cover 2 that covers the eccentric rotating disk 5 is the same as that of the eccentric rotating disk 5. It changes freely according to the eccentric rotation. In addition, since this peristaltic part cover 2 is contact | abutted to a human body when performing a massage, it is preferable that the surface of the fiber member 2b is smooth and is the material which reduced the friction at the time of use as much as possible.

  The turntable cover 3 is a cover member that covers the upper surface of the eccentric turntable 5. For example, it is preferable to use a thin film member that is extremely flexible and has a smooth surface, such as vinyl chloride or elastomer. Covering the upper part of the eccentric rotating disk 5 with the rotating disk cover 3 reduces friction between the eccentric rotating disk 5 and the fiber member 2b of the sliding part cover 2, and prevents the fiber member 2 from being worn or broken. Can do.

  The eccentric rotating disk 5 is a rotating disk that is rotationally driven by the motor 7, and is preferably formed of a resin member that is lightweight, such as plastic or acrylic, and that has excellent impact resistance. In addition, a rotating disk through hole 5a for inserting a rotating disk locking shaft 6a of a counterweight 6 described later is provided at the center of the eccentric rotating disk 5.

  The balance weight 6 has a fan-shaped planar shape, and is preferably produced by a die-cast alloy using a metal such as aluminum or zinc. As a result, the balance weight 6 can generate a large moment of inertia as compared with a resin member such as plastic, although it has a small volume.

  Further, the balance weight 6 also serves as a crankshaft that connects the eccentric rotating disk 5 and the rotating shaft 7 a of the motor 7. That is, the rotating shaft 7 a of the motor 7 is inserted into the counterweight through hole 6 b provided at the approximate center of the fan-shaped flat portion of the counterweight 6. As shown in FIG. 1, since each of the rotating shaft 7a and the through hole 6b is provided with a threaded portion that is screwed, the balance weight 6 is firmly supported by the rotating shaft 7a. Needless to say, the rotational direction of the motor 7 and the screwing direction of the above threaded portion coincide with each other so that the balance weight 6 does not fall off the rotating shaft 7a due to the rotation of the motor 7. Yes.

  On the other hand, a rotating disk locking shaft 6 a is provided on the fan-shaped base of the balance weight 6. The turntable locking shaft 6a is a hollow shaft, and a screw portion that engages with the turntable locking screw 4 is provided therein. As described above, the rotating disk locking shaft 6 a is inserted into the rotating disk through hole 5 a provided at the center of the eccentric rotating disk 5, so that the eccentric rotating disk 5 is connected to the balance weight 6 by the rotating disk locking screw 4. It is fixed to the turntable locking shaft 6a.

  In the present embodiment, since the distance between the center of the eccentric rotating disk 5 (the rotating disk locking shaft 6a) and the rotating shaft 7a (through hole 6b) of the motor 7 is separated, the eccentric rotating disk 5 includes the motor 7 As a result of the rotation, an eccentric rotational movement as shown in FIG. 6 (6a) is performed.

  The motor 7 is a motor that drives the eccentric rotating disk 5 to rotate eccentrically, and various types of DC motors or AC motors can be used according to the control method of the rotation speed. In view of the use as a massager, the motor 7 preferably has a characteristic that can stably generate high rotational torque at a relatively low speed.

  The frame portion 8 is a main body portion of the massage device 1 that accommodates the entire rotary peristaltic portion described above, and is preferably composed of, for example, a resin member such as reinforced plastic having impact resistance. Incidentally, since the cover frame body 2a of the sliding part cover 2 has flexibility, the sliding part cover 2 is bent by fitting the cover frame body 2a to the outer periphery of the opening end of the frame part 8. Can be easily fixed to the open end of the frame portion 8.

  In the actual configuration of the rotary massage device 1, a plurality of members such as fixing plates and fixing screws having various shapes for fixing the motor 7 to the inside of the frame portion 8 are required. Since there is no direct relationship with the technical idea according to the present invention, its description and explanation are omitted in FIG.

Next, the operation principle of swing reduction in the rotary massage device 1 of the present invention will be described with reference to FIG. 2 of the accompanying drawings.
First, when driven by the motor 7 and the eccentric rotating disk 5 starts to rotate eccentrically, a swing moment y1 of the following formula is generated as shown in FIG.
y1 = f (m1, L1, ω)

  In the above equation, f (m1, L1, ω) is a predetermined function for calculating the rocking moment of the rotary drive system in which the eccentric rotating disk rotates, and is predetermined according to the conditions of parameters L1, m1, and ω. The rocking moment y1 is derived. Incidentally, m1 represents the mass component of the eccentric rotating disk 5 that contributes to the generation of the oscillation moment, L1 represents the distance between the center of gravity of m1 and the rotating shaft 7a of the motor 7, and ω represents the angular velocity of the rotating shaft 7a.

Similarly, the shape of the balance weight 6 is not symmetrical with respect to the rotating shaft 7a but is asymmetrical fan-shaped, and therefore, as shown in FIG. Will occur.
y2 = f (m2, L2, ω)

  In the above equation, m2 represents the mass component of the balance weight 6 that contributes to the generation of the oscillation moment, L2 represents the distance between the center of gravity of m2 and the rotating shaft 7a, and ω represents the angular velocity of the rotating shaft 7a. Incidentally, it goes without saying that the above y1 and y2 are both vector quantities having two dimensions of magnitude and direction.

By the way, as shown in FIG. 2, the directions of L1 and L2 described above are vectors opposite to each other with respect to the radial direction of the rotating shaft 7a. Therefore, the swing moment vectors of y1 and y2 cancel each other. Occurs in the direction. On the other hand, by selecting each parameter of (m1, l1) and (m2, l2) to a predetermined value in y1 and y2 above.
abs [y1] ≈abs [y2]
(However, abs [y1] and abs [y2] indicate the absolute values of the vector quantities y1 and y2)
It is possible to derive the following condition. Therefore, when such a condition is set, the two moment vectors y1 and y2 are canceled out, and the swing generated in the entire rotary massage device 1 can be reduced.

  Next, the overall structure of the rotary massage device 1 according to the present invention is shown in the perspective view of FIG. As shown in the figure, a grip portion 9 is connected to the frame portion 8 of the massage device body. When the massage device is used, the user holds the grip portion 9 to hold the massage device on a predetermined body. Try to hit the part of. This state is shown in the usage explanatory diagram of the rotary massager 1 in FIG.

  Moreover, as shown in FIG. 3, the rotary massage device 1 according to the present invention is accompanied by a controller 10 outside the massage device body. The controller 10 incorporates a rotation speed control circuit (not shown) of the motor 7 and is connected to the massager body by a power cord having a detachable power plug.

  The controller 10 is connected to an AC power adapter (not shown) incorporating a power transformer and a rectifier circuit by a similar power cord. That is, the DC voltage (current) supplied from the AC power adapter is supplied to the motor 7 built in the main body of the massager 1 through the rotation speed control circuit in the controller 10.

  When the massage device is used, when the user turns the rotation speed adjustment knob 10a of the controller 10 clockwise, a power switch (not shown) in the controller 10 is turned on and the operation display lamp 10b is turned on. The voltage (current) is supplied to the motor 7 in the massage device body. Thereafter, when the speed adjustment knob 10a is further turned clockwise, the voltage (current) supplied to the motor 7 increases and the rotational speed of the motor 7 increases.

  On the other hand, when the speed adjustment knob 10a is turned counterclockwise, the voltage (current) supplied to the motor 7 decreases and the rotational speed of the motor 7 decreases. When the speed adjustment knob 10a is fully turned counterclockwise, the power switch is turned off and the operation display lamp 10b is extinguished, and the voltage (current) supply to the motor 7 in the massager body is cut off. Is done.

  Thus, in the rotary massage device 1 according to the present invention, the main body of the massage device and the controller 10 that controls the rotation speed of the motor built in the massage device are separated. Therefore, the strength of the massage can be adjusted by operating the controller at hand while bringing the body of the massage device into contact with a predetermined part of the human body, and a comfortable massage effect can be obtained by an extremely easy operation.

  In the above description, the case where the shape of the balance weight 6 is a fan-shaped disk has been described as an example, but the implementation of the present invention is not limited to such a case. The shape of the balance weight 6 is an asymmetric shape centered on the motor rotation shaft 7a, such as an elliptical type, a spindle type, or an eccentric rotary disk type, and is located on the side opposite to the center of gravity of the eccentric rotary disk 5 Any device having a center of gravity position may be used.

  In addition, the present invention is not limited to each embodiment described above, for example, the shape and arrangement of each part constituting the present invention or the material thereof without departing from the spirit of the present invention, Needless to say, it can be appropriately changed in accordance with the actual embodiment.

The configuration of the present invention described above can be used in a rotary massage device for business use or home use that is widely used in general.

It is a perspective view which shows the structure of the rotation peristaltic part which is the principal part of the rotary massage device by this invention. It is a figure explaining the operation | movement principle of the rotation peristaltic part of the rotary massage device by this invention. It is a perspective view showing the whole rotary massage device by the present invention. It is a figure explaining the usage method of the rotary massage device by this invention. It is a figure explaining the schematic structure of the conventional rotary massager. It is a figure explaining operation | movement of the conventional rotary massage device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Rotary massager 2 ... Swing part cover 2a ... Cover frame 2b ... Textile member 3 ... Turntable cover 4 ... Turntable locking screw 5 ... Eccentric turntable 5a ... Turntable through-hole 6 ... Balance weight 6a ... Rotating disk locking shaft 6b ... Balance weight through hole 7 ... Motor 7a ... Motor rotating shaft 8 ... Frame portion 9 ... Grip portion 10 ... Controller 10a ... Rotational speed adjustment knob 10b ... Operation indicator lamp 100 ... Rotary massager 101 ... 揉Dynamic rotating disk 102… Crankshaft 103… Motor 103a… Motor rotating shaft 104… Frame

Claims (4)

In a rotary massager equipped with a peristaltic rotating disk mounted eccentrically with respect to the rotation axis of the motor,
A rotary massager characterized in that a counterweight for generating a counter moment for canceling a swinging moment generated by the eccentric rotation of the peristaltic rotary disk is provided on the rotary shaft.   The rotary massaging device according to claim 1, wherein the balance weight is a disk-shaped body having a center of gravity in a radial direction opposite to an eccentric direction of the peristaltic rotating disk with respect to the rotation shaft.   The said disk-shaped body is a fan-shaped disk-shaped body which has the structure opened in the shape of a fan toward the radial direction on the opposite side to the eccentric direction of the said peristaltic rotary disk with respect to the said rotating shaft. Rotary massager. 4. The rotary massage according to claim 1, wherein a controller for adjusting a rotation speed of the motor is provided separately from a frame in which the motor is stored. 5. vessel.

Images