JP2542425Y2 - Portable electric massager - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable electric massager.

[0002]

2. Description of the Related Art In a conventional portable electric massager, a turntable having a plurality of massage rollers is connected to an output shaft of an electric motor only at a central portion thereof and is pivotally supported.

[0003]

However, in the conventional electric massager, the rotating disk is supported (pivoted) only at the center, so that the rotating disk rattles during use.

[0004] Further, when the shaft at the center of the turntable is made of plastic and molded integrally with the turntable, the shaft may be broken when the massage roller of the turntable is strongly pressed against a part to be massaged by the body. , The durability was low.

Therefore, an object of the present invention is to provide a portable electric massager which does not rattle and which has high durability.

[0006]

In order to achieve the above-mentioned object, an electric massager according to the present invention includes a rotating disk having a plurality of massage rollers, and the rotating disk has a metal shaft at the center. It is integrally formed and the remainder is molded of plastic and is interlocked with a driving device via the shaft. Further, the turntable is provided at the central portion having the shaft and the outer peripheral edge. , Rotatably supported by bearings.

[0007]

[Function] The massage roller is brought into contact with a part of the body such as a foot or a back, and the power is turned on. The driving force of the driving device is transmitted to the rotating disk via the shaft, and a bearing that supports the central portion of the rotating disk and a bearing that supports the outer peripheral edge of the rotating disk, while supporting the rotating disk, the rotating disk is It rotates smoothly without rattling. That is, the inner and outer bearings sufficiently withstand the reaction force transmitted from the body via the rollers.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings showing embodiments.

FIGS. 1, 2 and 3 show a portable electric massager according to the present invention. The massager comprises a massager main body 1 and a substantially Y-shaped plan view which is detachably attached to the massager main body 1. -Shaped handle part 2 (see FIG. 4)
And

The main body 1 of the massager is provided with a plurality of massage rollers 7 at the lower opening of the main body case 3.
Is provided.

The main body case 3 has a bean-shaped gripping head 22 at the upper end.

As shown in the cross-sectional view of FIG. 3, the turntable 6 has a metal shaft 8 integrally formed in a central portion 9 and the rest is molded of plastic. Knurled so that it can be firmly fixed to the rest.

Further, the upper end of the shaft 8 is
The driving device 4 includes a motor 5 and a speed reducer.
Consists of twenty.

More specifically, a spline (gear) is formed in the upper half portion of the shaft 8 and is inserted into the gear hole of the final stage gear 21 of the speed reducer 20 to be interlocked therewith.

The center 9 of the turntable 6 having the shaft 8 and the outer peripheral edge 11 are supported by bearings 12 and 18 so that the turntable 6 can rotate freely.

That is, the bearing 12 at the center 9 is a needle bearing or a ball bearing, and the outer peripheral edge 11 is a ring-shaped sliding bearing made of a fluororesin, a copper-based alloy, an oil-impregnated metal, or the like.

The bearing 18 at the outer peripheral edge 11 has a substantially square cross section, and has a stepped portion formed on the inner peripheral surface near the lower opening of the main body case 3 and the outer peripheral edge 11 of the turntable 6.
The bearing 18 is slidably fitted in a gap formed between the step-shaped step portion formed in the above-described manner.

As shown in FIG. 3 by a virtual line,
It is also preferable to mount the cover 13 having air permeability near the lower opening of the main body case 3.

By attaching the handle portion 2 as shown in FIG. 1, it is possible to massage a hard-to-reach portion such as the back of the body, while removing the same as shown in FIG. Massage arms etc.

In this embodiment, the massage rollers 7 are provided obliquely with respect to the rotation axis of the turntable 6, but as shown in FIG. It is also preferable that the rotation axes of the massage rollers 7 are orthogonal to each other.

The massage roller 7 of the rotating disk 6
When the power is turned on by contacting... With a part of the body such as a foot or a back, the turntable 6 rotates smoothly.

In the above-described use, the rotating disk 6 receives a pressing force in the axial direction or a direction perpendicular to the axis, and the pressing force is distributed to the bearings 12 and 18 that rotatably support the rotating disk 6. .

That is, at the outer peripheral edge 11 of the turntable 6,
A ring-shaped bearing 18 having a substantially square cross section slides between a stepped portion near the lower opening end of the main body case 3 and a stepped portion of the outer peripheral edge 11 of the turntable 6. The bearing 18 is a rotary disc 6
Are supported in the rotation axis direction (axial direction) and the direction perpendicular to the axis (radial direction).

The center portion 9 of the turntable 6 receives a radial force from the bearing 12.

Therefore, the rotating disk 6 is composed of the central portion 9 and the outer peripheral edge.
Since the rotating disk 6 is supported as described above at 11, the rotating disk 6 can withstand a large external force and rotate smoothly without rattling.

Next, FIG. 5 shows another embodiment. In this embodiment, a brush 15 having brush bristles 16 is detachably mounted so as to cover from below the turntable 6.

That is, the brush 15 is attached to the screw hole provided on the lower end surface of the shaft 8 of the turntable 6 and coinciding with the axis of the turntable 6 by the mounting screw 14, and the turntable 6 is rotated. By doing so, the brush 15 rotates.

A convex tooth is formed on the outer peripheral edge of the brush 15, and a concave portion is formed on the outer peripheral edge of the main body of the rotary disk 6 so that the convex teeth mesh with each other to transmit the rotational torque. I do.

It should be noted that the present invention is not limited to the illustrated embodiment, and the design can be freely changed without departing from the gist of the present invention.

For example, the gripping head 22 at the upper end of the main body case 3
Is not a bean-like shape as in FIG. 1, but a cone or hemisphere.
It is also preferable to provide an electric cord connection at the apex of the cone.

[0031]

Since the present invention is configured as described above, the following effects can be obtained.

Since the rotating disk 6 is rotatably supported by bearings 12 and 18 between the central portion 9 and the outer peripheral edge 11, the massage roller 7 is strongly pressed against a part of the body such as a foot or a back. Even when used, it can withstand a large reaction force enough,
It can rotate smoothly without rattling.

Accordingly, a large load is not applied to the central portion 9 and the shaft 8 is made of metal, so that the central portion 9 is hard to be broken and the durability can be improved.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of the present invention.

FIG. 2 is a side view showing an example of a use state.

FIG. 3 is a sectional front view.

FIG. 4 is a perspective view showing a handle portion.

FIG. 5 is a partially cutaway sectional view showing another embodiment.

FIG. 6 is a sectional front view showing another embodiment.

[Explanation of symbols]

 4 Driving device 7 Massage roller 8 Shaft 9 Center part 11 Outer edge 12 Bearing 18 Bearing

Claims (1)

(57) [Scope of request for utility model registration] 1. A rotating disk 6 having a plurality of massage rollers 7... The rotating disk 6 has a metal shaft 8 in a central portion 9 integrally therewith, and the remainder is molded of plastic. The rotating disk 6 is rotatably connected to the drive unit 4 via a shaft 8 at the center 9 having the shaft 8 and the outer peripheral edge 11 by bearings 12 and 18. A portable electric massager characterized by being supported.