JPS6132506Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a powered toothbrush that is powered by a battery, and allows you to freely brush the front, back, and upper and lower interlocking surfaces of the teeth with one hand, and also rotates the rotating brush according to the position of the tooth to be brushed. The mounting position can be changed so that even the back teeth, the front teeth, and the back side of the teeth can be brushed cleanly.

An embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a handle portion in which a battery 2 is removably housed, and a motor 3 is housed inside the handle portion above.
Reference numeral 4 denotes a flexible shaft connected to the motor shaft of the motor, which can be bent freely, and a rotary brush 5 is detachably attached to the tip of this flexible shaft. That is, the boss portion 6 provided at the rear of the rotating brush 5
A first insertion hole 7 is provided in the center of the shaft in the direction of the rotation axis, and a second insertion hole 8 is provided perpendicularly to the first insertion hole 7. 4 can be attached to the first insertion hole 7 or the second insertion hole 8.

A locking ring 10 is provided approximately at the tip of this flexible shaft 4.
is installed, and this locking ring 10 is a double ring via the bearing 11, so even if the inner ring 10a is fixed to the universal shaft 4 and rotated together with the flexible shaft 4, the outer ring 10b does not rotate. Further, reference numeral 15 denotes a locking portion that is similarly attached to the approximate root of the flexible shaft 4, and an internal ring 17 provided inside is fixed to the flexible shaft 4 via a bearing 16, but the rotation of the inner ring is controlled by the locking portion 15. It doesn't get across.

The operating rod 18, one end of which is attached to one side of the locking ring 10, is inserted into an insertion hole 19 provided in the locking portion 15 and fixed with a tightening bolt 20. The mounting angle of the rotary toothbrush 5 can be freely adjusted by adjusting the length by stretching the toothbrush.

Since this device has the above-described configuration, when the tip of the flexible shaft 4 is installed in the first insertion hole 7, the boss portion 6 rotates around the first insertion hole, so that the front surface of the rotating brush 5 When brushing your front teeth, you can use the front side of the rotating brush. Also, this rotating brush 5
It is also possible to brush the upper and lower meshing surfaces of teeth with the surrounding surface of the teeth. Moreover, when brushing the inside of the teeth, the front or peripheral surface of the rotating brush shown in FIG. 1 can be used to brush the inside of the teeth.

Moreover, if the tip of the flexible shaft 4 is inserted into the second insertion hole 8 of the boss part 6, this rotating brush 5 will rotate around the second insertion hole 8, that is, the axis in the direction perpendicular to the center line of the boss part. It can be rotated around the center, and as mentioned above, it is convenient for brushing the inside of the teeth.

As described above, in this invention, the installation angle of the rotating brush can be adjusted arbitrarily, so once set at a predetermined angle, you can easily brush your teeth with one hand. It has the advantageous feature that it can polish every corner of the teeth by changing the axis of rotation of the tooth.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is an overall side view, FIG. 2 is a sectional view taken along the line A-A in FIG. 1, and FIG.
3 is a cross-sectional view taken along the line B--B in FIG. 1, FIG. 4 is a partially cutaway side view of the rotary toothbrush, and FIG. 5 is a rear view of the rotary toothbrush. 1 is a handle, 2 is a battery, 3 is a motor, 4 is a flexible shaft, and 5 is a rotating toothbrush.

Claims (1)

[Scope of utility model registration request] A handle part 1 that houses a battery 2 and a motor 3 inside.
A flexible shaft 4 having one end connected to the motor 3 and having flexibility as a whole is attached to the upper part of the shaft, and a boss part 6 having a rotating brush 5 on the front side is attached to the boss part 6 located in the direction of the axis of rotation of the rotating brush. A powered motor is provided with a first insertion hole 7 located in the direction perpendicular to the first insertion hole 7 and a second insertion hole 8 located in a direction perpendicular to the first insertion hole, and the boss portion of the rotating brush is removably attached to the tip of the flexible shaft. toothbrush.