JPS6355348B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a pine surge machine having two massage balls.

[Background Art] A conventional example is shown in FIG. Reference numeral 1 indicates massage balls of a pine massage machine, which performs pine surgery on the treatment area of the human body using two massage balls 1 and 1. Conventionally, massaging balls 1 are pressed against the human body 6 with a force of _F2 ,
It is configured to massage the human body 6 by repeating extremely low cycle motions of F ₁ and F ₁ '. However, the area that is massaged by the massage balls 1 is only around the point of the massage balls 1, and there is a problem that the massage effect is not sufficient.

[Object of the Invention] The present invention has been provided in view of the above-mentioned points, and consists of repeatedly moving two massage balls in parallel to the treatment surface, and at a predetermined frequency in a direction perpendicular to the treatment surface. The present invention provides a pine surge machine that aims to enhance the kneading effect by excitation and maximizing the amplitude of standing waves generated on the surface and inside of the human body.

[Disclosure of the Invention] Examples of the present invention will be described below with reference to the drawings.
FIG. 2 is a schematic diagram showing the principle of the present invention. In addition to the configuration in which the human body 6 is massaged with a pair of massage balls 1 as in the above conventional example, the present invention further provides a surface of the human body 6, that is, a treatment surface. The configuration is such that forces F ₃ and F ₃ ' are applied to cause slight vibrations perpendicular to the oscillation. The vibrations of the massage balls 1 propagate radially around the contact points between the massage balls 1, 1 and the skin, so if the vibrations are large enough, standing waves are generated on the body surface and in various parts of the body. Here, both massage balls 1,
A standing wave occurs when the phase of the frequency excited at 1 is as follows. That is, when the phase is the same, D=nλ (however, n=1, 2, 3...) When the phase is opposite, D=(n-1/2)λ (however, n=1, 2, 3...) A standing wave is generated when the distance between both kneading balls 1, 1 matches. Furthermore, since muscles and muscles are a kind of string, standing waves are generated by the string inside the human body.
In addition, each human body tissue has a natural resonance frequency due to the difference in mechanical impedance, so if the frequency of the massaging ball 1 is adjusted to the resonance frequency that is considered to be the most effective, the amplitude of the antinode of the standing wave will be maximized.
The kneading effect is further enhanced.

FIG. 3 shows a configuration diagram of the present invention, in which the massage balls 1 that are in contact with the treatment surface of the human body 6 with a certain pressure are vibrated by the vibration device 3 at a predetermined vibration frequency. The excitation current applied to the excitation device 3 is a sine voltage of constant amplitude generated from the oscillator 2, which is applied to the second-order integrator 7.
The power amplifier 8 converts the voltage into a displacement voltage, and the power amplifier 8 converts the voltage into a current. A sensor 4 is located on the skin of the human body 6 between the massage balls 1, 1, and the vibration state of the skin is detected by the signal from this sensor 4. That is, this sensor 4 has a configuration as shown in FIG. 5, and the sensor 4, which is called an acceleration pickup, has a weight 21 and a piezoelectric element 22 disposed within a case 20 thereof. Acceleration A of the case 20 in the direction of the arrow in FIG.
When the piezoelectric element 22 is held between the case 20 and the weight 21, a force mA is applied due to the inertia m of the weight 21. Since the piezoelectric element 22 converts force into voltage, it generates an acceleration voltage of V=KmA, where k is the conversion efficiency. After all, since Km is constant, V becomes a voltage representing acceleration. Therefore, this sensor 4 converts acceleration into an acceleration voltage, and a voltage signal as an acceleration voltage is input to the preamplifier 9. This voltage signal is impedance-converted and amplified by the preamplifier 9, and the acceleration A
is output and further converted into a displacement x by a second-order integrator 10. The control device 5 turns on and off the pine surge machine by means of a switch 11, and drives a massaging ball drive mechanism 12 that generates a drive signal that causes the massaging balls 1 to repeatedly move, that is, to move the massaging balls 1, 1 closer together or apart. . Further, as will be described later, the control device 5 inputs the displacement x, which is the magnitude of the standing wave from the second-order integrator 10, and controls the oscillation frequency of the oscillator 6 to vary, and also controls the massaging ball. Drive mechanism 1
The movement state of the massage balls 1 from 2 is monitored.

FIG. 9 shows a so-called claim correspondence diagram, in which the maximum value of the amplitude of the standing wave output from the converting means 31, which is the second-order integrator 10, is the maximum value detecting means 3 of the control device 5.
2. and,
The maximum value of the amplitude output from the maximum value detection means 32 is stored in the storage means 33. The maximum value of the amplitude of the standing wave stored in the storage means 33 is updated every time both massage balls 1 are reciprocated once,
The comparison means 34 compares the previous maximum amplitude value of the standing wave stored in the storage means 33 and the current maximum amplitude value of the standing wave. The output of this comparison means 34 is inputted to the frequency variable means 35 or the control means 36, and the output is used to generate the oscillator 2.
This is to control the standing wave so that the amplitude value of the standing wave is maximized, as will be described later. In other words, the frequency variable means 35 changes the oscillation frequency of the oscillator 2 so that the amplitude value of the standing wave becomes the maximum, and when the amplitude value of the standing wave reaches the maximum, the output of the comparison means 34 Accordingly, the oscillation frequency of the oscillator 2 is fixed by the control means 36, and the oscillator 2 continues to oscillate at this frequency.

FIG. 4 shows a flowchart of an example of the operation of the present invention. In FIG. 4, the frequency ω ₀ at which the massaging ball 1 is excited is automatically set so that the displacement x obtained from the second-order integrator 10 is maximum, that is, the standing wave generated between both massaging balls 1 is maximized. I'm trying to set it up. First, by turning on the switch 11, the massaging ball drive mechanism 12 is turned on, and the repetitive motion of the massaging balls 1 is started. Store the maximum value Xmax of displacement x according to the amplitude of the standing wave and the previous maximum value.
The initial value of Xmax′ is zero. Massage ball 1 is the 6th
As shown in the figure, the maximum value Xmax′ of the standing wave generated during one round trip is detected at the frequency ω ₀ ,
The round trip is in the direction of F ₁ in Figure 2, and the frequency ω ₀ is F ₃
The direction is In other words, the purpose is to detect the maximum value of the amplitude of the standing wave when the interval between the massage balls 1 is changed at the frequency ω ₀ . Next, the frequency ω ₀ is slightly changed (Δω), the massaging balls 1 are made to reciprocate once, and the maximum value Xmax of the standing wave is obtained. Compare Xmax' and Xmax for each round trip of the massaging ball 1, and when Xmax'> Xmax, when oscillating at ω ₀ = ω ₀ −Δω, the standing wave matches the natural resonance frequency of the human body 6 and the massaging effect occurs. is considered to be large, so the reciprocation of massage ball 1 in the direction of F ₁ ,
Operate with oscillation of ω ₀ = ω ₀ −Δω. The frequency ω ₀ at this time means the resonant frequency of the mechanical impedance of the human body, and the amplitude of the antinode of the standing wave between the two massaging balls 1, 1 becomes maximum, increasing the pine surge effect. Therefore, when the massaging balls 1 are moved back and forth, the amplitude value of the standing wave between the massaging balls 1 can be maximized at a certain position of the massaging balls 1 where a certain phase matches the distance between the massaging balls 1. , the difference in strength applied to the treatment area becomes larger, and the pine surge effect becomes larger. Also, when Xmax′<Xmax, Xmax′=Xmax,
Update ω ₀ =ω ₀ +Δω and repeat the above operation.
When the switch 11 is turned off, the oscillator 2 and the kneading ball drive mechanism 12 are turned off and the pine surge ends.

In addition, when the frequency of excitation to the massage balls 1 is vibrated in the same phase, a standing wave is generated when D=nλ (n=1, 2, 3...) matches the distance between both the massage balls 1, 1. For example, as shown in FIG. 7, n=2
When D=2λ, the center becomes an antinode. λ is human body 6
This is the wavelength of vibrations transmitted through the treatment area. In any case, the oscillation frequency of oscillator 2 is 100Hz or 10~
Even if the frequency is as low as 100Hz, there are many antinodes and knots on the surface of the human body 6 as shown in Figure 8, so even if the sensor 4 is located in the center between the massage balls 1, 1, it will not detect a standing wave. In this case, the displacement x will not be the minimum.

[Effects of the Invention] As described above, the present invention includes a pair of massage balls that are in contact with the treatment surface of the human body in a direction substantially perpendicular to the treatment surface, and a pair of massage balls that touch the massage balls in a direction perpendicular to the treatment surface using a predetermined frequency from an oscillator. A vibrating device that applies micro vibrations by vibration, and a massage ball drive mechanism that performs pine surge by moving the massage balls near or apart from each other substantially parallel to the treatment surface to change the distance between the massage balls. , a sensor that is placed in the center between both massage balls and detects acceleration from the vibration state of the treatment area of the human body, and inputs the acceleration signal from the sensor and converts it into the amplitude of a standing wave generated between both massage balls. a converting means; a maximum value detecting means for detecting the maximum value of the amplitude of a standing wave output from the converting means each time the kneading balls vibrated at a predetermined frequency are reciprocated once by the kneading ball drive mechanism;
Storage means for updating and storing the maximum value of the amplitude of the standing wave output from the maximum value detection means, and the maximum value of the amplitude of the previous standing wave stored in the storage means and the current value of the standing wave. a comparison means for comparing the maximum value of the amplitude of the wave; and a frequency variable means for changing the frequency at which the massaging balls are vibrated when the maximum value of the amplitude compared by the comparison means is larger than the previous maximum value of the amplitude; When the maximum value of the amplitude compared by the comparison means becomes smaller than the maximum value of the previous amplitude, the control means continues to vibrate the massage balls at the frequency of the previous vibration. By creating a standing wave in the treatment area of the human body between the balls, and by changing the excitation frequency to the massage balls to maximize the amplitude of the standing wave between both massage balls, the natural resonance of the human body is generated. It is possible to match the vibration frequency of the massage balls to the frequency, and as a result, it is possible to further enhance the massage effect.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of a conventional example, Fig. 2 is a principle diagram of an embodiment of the present invention, Fig. 3 is a configuration diagram of the same as above, Fig. 4 is a flowchart of the same as above, and Fig. 5 is a configuration of the same sensor as above. 6 to 8 are operation explanatory diagrams of the same, and FIG. 9 is a diagram corresponding to the so-called claims of the same. 1 is a massage ball, 2 is an oscillator, 3 is an excitation device, 4 is a sensor, 5 is a control device, 6 is a human body, 31 is a conversion means, 32 is a maximum value detection means, 33 is a storage means, and 34 is a comparison means , 35 is a frequency variable means, 3
6 is a control means.

Claims (1)

[Claims] 1 A pair of massage balls that are in contact with the treatment surface of the human body in a direction substantially perpendicular to the treatment surface, and a vibration device that applies minute vibrations by vibrating the massage balls in the direction perpendicular to the treatment surface using a predetermined frequency from an oscillator. , a massaging ball drive mechanism that performs massage by moving the massaging balls toward or away from each other approximately parallel to the treatment surface, and changing the distance between the massaging balls; a sensor that detects acceleration from the vibration state of the treatment part; a conversion means that inputs the acceleration signal from the sensor and converts it into the amplitude of a standing wave generated between both massage balls; Maximum value detection means for detecting the maximum value of the amplitude of the standing wave outputted from the conversion means each time the massaging balls are reciprocated once by the massaging ball drive mechanism; and the standing wave outputted from the maximum value detection means. storage means for updating and storing the maximum value of the amplitude of the standing wave; and comparison means for comparing the maximum value of the amplitude of the previous standing wave stored in the storage means with the maximum value of the amplitude of the current standing wave. and a frequency variable means for changing the frequency of excitation to the massage balls when the maximum value of the amplitude compared by the comparison means is larger than the maximum value of the previous amplitude; and a control means for continuing to control the vibration of the kneading balls at the frequency of the previous vibration when the amplitude of the vibration becomes smaller than the maximum value.