JP2000157594A - Massage unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a massage unit capable of improving a finger pressure feeling without providing a speed changing mechanism. SOLUTION: Since a rotary shaft 14 is rotated by a speed variable motor 10, a rotation speed is continuously varied without using a speed changing mechanism. Since the rotation speed is not suddenly changed at the time of changing the rotation speed, the finger pressure feeling is improved. Also, since the speed changing mechanism is not required, the structure is simpler and assembly is facilitated as well.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a massage unit, and more particularly to a massage unit capable of enhancing a sense of acupressure without using a speed change mechanism.

[0002]

2. Description of the Related Art Conventionally, there has been known a massager in which a massage unit provided on a massage sheet is applied to the waist and back of a person sitting on a massage sheet (as a similar technique, Japanese Utility Model No. 1-13
No. 5926). This type of massage unit has a structure in which a pair of left and right eccentric rollers having the same eccentric direction are fixed to a horizontal rotating shaft, and a relatively rotatable treatment roller is attached to an outer surface of the eccentric roller. Therefore, by rotating the rotating shaft, the left and right treatment rollers reciprocate with a stroke corresponding to twice the eccentric width, so that a desired part can be pressed with the treatment rollers.

[0003] The rotation of the rotating shaft is performed by transmitting the rotating force of a drive motor. That is, the rotational speed of the drive motor that rotates at a constant speed is changed stepwise by the transmission mechanism and transmitted to the rotating shaft, so that a different sense of acupressure can be obtained.

[0004]

However, such a conventional massage unit has a structure in which the number of rotations of the drive motor is changed stepwise by a speed change mechanism and transmitted to a rotating shaft. At the moment when the number switches, the rotation speed changes suddenly, and the sense of acupressure temporarily decreases. In addition, since a speed change mechanism for changing the rotational speed in a stepwise manner is required, the structure is complicated, and the assembling work is troublesome.

The present invention has been made by paying attention to such a conventional technique, and provides a massage unit which can enhance a sense of acupressure without providing a transmission mechanism.

[0006]

According to the first aspect of the present invention,
A massage unit in which a pair of left and right eccentric rollers are fixed to a horizontal rotating shaft, and a relatively rotatable treatment roller is attached to an outer surface of the eccentric roller, wherein the rotating shaft is rotated by a variable speed motor.

According to the first aspect of the present invention, since the rotating shaft is rotated by the variable speed motor, the rotation speed can be continuously changed without using a speed change mechanism. When changing the rotation speed, the rotation speed does not suddenly change, so that the sense of acupressure is improved. In addition, since the rotation speed can be changed steplessly, the most comfortable rotation speed for the user can be obtained with high accuracy within the rotation speed range. Further, since a transmission mechanism is not required, the structure is simple and the assembly is easy.

[0008] In the invention described in claim 2, the eccentric directions of the two eccentric rollers are different from each other.

According to the second aspect of the present invention, since the eccentric directions of the two eccentric rollers are different from each other, the two treatment rollers press the body one by one alternately. Accordingly, since the body is not pushed and moved greatly in the acupressure direction as in the related art in which the acupressure is performed simultaneously by the two treatment rollers, the relative displacement between the treatment roller and the body is increased, and the acupressure effect is enhanced.

[0010] In the third aspect of the present invention, the difference angle of the eccentric direction is 90 ° or more.

According to the third aspect of the present invention, since the difference angle between the eccentric directions of the two treatment rollers is 90 ° or more,
The time difference between the treatment rollers that alternately applies acupressure increases, and the acupressure effect increases.

According to the invention described in claim 4, the difference angle of the eccentric direction is 180 °.

According to the fourth aspect of the present invention, since the difference angle between the eccentric directions of the two treatment rollers is 180 °, the time difference between the treatment rollers that alternately applies acupressure is maximized, and the acupressure effect is further enhanced.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to FIGS. The massage unit 1 according to this embodiment is provided on a seat back 2 portion of a massage sheet. One feed screw 3 is provided inside the seat back 2 and extends vertically along the seat back 2. The feed screw 3 is not a normal screw rod, but a screw that can transmit rotation (for example, has a D-shaped cross section in which the side surface of a normal round screw rod is cut along the longitudinal direction). The massage unit 1 is provided with a nut (not shown) screwed to the screw portion of the feed screw 3 and a rotating body (not shown) which rotates by engaging with the D-shaped cross section of the feed screw 3. I have. The massage unit 1 can be moved up and down along the feed screw 3 by engaging the nut with the feed screw 3 via the clutch, and the rotational force of the feed screw 3 taken out by the rotating body is applied to the massage unit 1. Is transmitted to a pair of left and right treatment rollers 4 and 5 attached thereto, and the treatment rollers 4 and 5 can perform finger pressure.

Two rails 6 are provided on both left and right sides of the feed screw 3. Then, by bringing the guide rollers 7 provided on both sides of the massage unit 1 along the rails 6, the massage unit 1 can be moved up and down in a stable state.

The lower end of the feed screw 3 is supported by a bearing 8 and has a pulley 9 attached thereto.
A variable speed motor 10 is fixed to one of the rails 6, and a pulley 11 is also fixed to the tip of the shaft.
A belt 12 for transmitting power is wound between the pulleys 9 and 11. The variable speed motor 10 has a function of continuously changing the rotation speed without using a transmission mechanism. The rotation speed can be changed by a dial provided near the occupant. In this embodiment, 15 to
It can be varied in the range of 500 revolutions / minute. Since no transmission mechanism is required, the structure is simple and the assembly is easy.

The rotating force taken out of the rotating body engaged with the feed screw 3 is transmitted to a rotating gear 13 shown in FIG.
The rotating shaft 14 arranged in the horizontal direction is rotated. Eccentric rollers 15, 16 whose shafts are shifted by a predetermined eccentric width S from the center are fixed to both ends of the rotating shaft 14 so as to rotate integrally with the rotating shaft 14. In this embodiment, the eccentric direction of the eccentric rollers 15, 16 with respect to the rotation shaft 14 is set to 1
The difference was 80 °. That is, both eccentric rollers 15,
16 were eccentric toward the opposite sides (the arrow D in FIG. 3 is the eccentric direction).

The treatment rollers 4 are attached to the outer surfaces of the eccentric rollers 15 and 16 so as to be relatively rotatable.
5 When the eccentric rollers 15 and 16 rotate integrally with the rotating shaft 14, the left and right treatment rollers 4 and 5 become eccentric width S of 2
Since the treatment rollers 4 and 5 reciprocate with a stroke corresponding to a double, a desired part can be pressed with the treatment rollers 4 and 5. In addition, since the eccentric directions of the two eccentric rollers 15 and 16 are different from each other, the two treatment rollers 4 and 5 alternately apply finger pressure one by one. Therefore, the body is not pushed and moved in the acupressure direction as in the related art in which the two treatment rollers 4 and 5 simultaneously press a finger, and the relative displacement between the treatment rollers 4 and 5 and the body is large. And increase the acupressure effect.

Further, in this embodiment, since the variable speed motor 10 is used, the rotation speed of the eccentric rollers 15 and 16 (the finger pressure speed of the treatment rollers 4 and 5) can be changed steplessly. In this case, the rotation speed does not change suddenly, and the usability is good. In addition, since the rotation speed can be changed steplessly, the most comfortable rotation speed for the user can be obtained with high accuracy within the rotation speed range.

In the present invention, since the two treatment rollers 4 and 5 do not need to simultaneously apply finger pressure to the body, the eccentric rollers 15 and
The eccentric directions of 16 may be slightly different. However, in order to enhance the acupressure effect, the difference angle in the eccentric direction is 9
It is desirable that the angle is equal to or greater than 0 °, and in particular, if the angle is set to 180 ° as in the above-described embodiment, the treatment rollers 4 that alternately apply finger pressure,
The time difference of 5 is maximized, and the acupressure effect is further enhanced.

[0021]

According to the first aspect of the present invention, since the rotating shaft is rotated by the variable speed motor, the rotation speed can be continuously changed without using a speed change mechanism. When changing the rotation speed, the rotation speed does not suddenly change, so that the sense of acupressure is improved. In addition, since the rotation speed can be changed steplessly, the most comfortable rotation speed for the user can be obtained with high accuracy within the rotation speed range. Further, since a transmission mechanism is not required, the structure is simple and the assembly is easy.

According to the second aspect of the present invention, since the eccentric directions of the two eccentric rollers are different from each other, the two treatment rollers alternately press the body one by one. Accordingly, since the body is not pushed and moved greatly in the acupressure direction as in the related art in which the acupressure is performed simultaneously by the two treatment rollers, the relative displacement between the treatment roller and the body is increased, and the acupressure effect is enhanced.

According to the third aspect of the present invention, the difference angle between the eccentric directions of the two treatment rollers is 90 ° or more.
The time difference between the treatment rollers that alternately applies acupressure increases, and the acupressure effect increases.

According to the fourth aspect of the present invention, since the difference angle between the eccentric directions of the two treatment rollers is 180 °, the time difference between the treatment rollers that alternately applies acupressure is maximized, and the acupressure effect is further enhanced.

[Brief description of the drawings]

FIG. 1 is a front view showing a massage unit according to this embodiment.

FIG. 2 is a sectional view taken along the line SA-SA shown in FIG.

FIG. 3 is an explanatory diagram showing an eccentric direction of a treatment roller.

[Explanation of symbols]

 4, 5 Treatment roller 10 Variable speed motor 14 Rotary shaft 15, 16 Eccentric roller D Eccentric direction S Eccentric width

Claims (4)

[Claims] 1. A massage unit in which a pair of left and right eccentric rollers are fixed to a horizontal rotating shaft, and a relatively rotatable treatment roller is attached to an outer surface of the eccentric roller, wherein the rotating shaft is rotated by a variable speed motor. A massage unit characterized by having 2. The massage unit according to claim 1, wherein eccentric directions of the two eccentric rollers are different from each other. 3. The massage unit according to claim 2, wherein the angle of difference in the eccentric direction is 90 ° or more. 4. The massage unit according to claim 3, wherein the angle of difference in the eccentric direction is 180 °.