JPH071823U - Electric three-branch toothbrush - Google Patents

Abstract

(57) [Summary] (Correction) [Construction] The motor drive shaft 2 which has a motor and a battery built in the grip 1 which forms the casing and which is projected outside the grip 1.
Attach the shaft base 3 of the toothbrush B to the tip of the
In the electric toothbrush used while vibrating, the three shafts 5, 6, 7 are branched from the shaft base 3 in a short distance and substantially in parallel. One of the shafts 5 has rigidity higher than the other two shafts, and a brush 8 having a width wider than the shaft width is provided downward of the tip of the shaft. The other two shafts 6 and 7 are formed inwardly curved with respect to the one shaft 5, and each of the brushes 9 has a width wider than the shaft width in the horizontal direction at the tip thereof.
10 are arranged in close proximity to each other. [Effect] Since the brush contacts the tooth from the front and back and from the three directions at the same time, the entire surface of the tooth can be polished quickly and thoroughly. At this time, since the wide brushes 9 and 10 of the elastic shafts 6 and 7 sandwich and press the teeth from the front and back sides, the back side of the teeth can be well polished.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electric toothbrush.

[0002]

[Prior art]

 Until now, electric toothbrushes have been provided that use a toothbrush at the tip and vibrate the handle. In order to brush the teeth evenly with this electric toothbrush, at least one tooth had to be brushed while moving the brush from three directions, the front and back, and the tip, which took a considerable amount of time. In addition, the front side can be easily polished, but the back side is difficult to polish.

[0003]

[Problems to be solved by the device]

 The present invention has been made in view of the above circumstances, and provides a household electric toothbrush capable of quickly and thoroughly polishing the entire tooth surface.

[0004]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present invention has a toothbrush at the tip of a motor drive shaft 2 which has a motor and a battery built in a grip portion 1 forming a casing and which projects outside the grip portion 1. In an electric toothbrush that is used by vibrating the toothbrush B by mounting the shaft base 3 of B, the three shafts 5, 6, 7 are branched from the shaft base 3 in a short distance and substantially in parallel. One of the shafts 5 has rigidity higher than the other two shafts, and a brush 8 having a width wider than the shaft width is provided downward of the tip of the shaft. The other two shafts 6 and 7 are formed inwardly curved with respect to the above-mentioned one shaft 5, and the brushes 9 and 10 each having a width wider than the shaft width are made to face each other in the horizontal direction at their tips in the close proximity.

[0005]

[Effect] With respect to the tooth, since the brushes 9 and 10 on both sides of the tooth and the tip of the tooth are simultaneously brushed from three directions of the brush 8 at the center, the entire surface of the tooth is not simultaneously covered. It can be polished quickly. In particular, in the front-back direction, the teeth are sandwiched by the elastic forces of the shafts 6 and 7 on both sides, and polishing is performed in a pressed state. Further, since the bases of the brushes 9 and 10 are wider than the thickness of the shafts 6 and 7, the shafts are in a state of straddling the teeth, and the brushes fit well to the back side of the teeth.

[0006]

【Example】

 An embodiment of the present invention will now be described with reference to the drawings. As shown in FIG. 1, the electric toothbrush of the present invention includes a small motor and a dry battery in a grip portion 1 forming a casing sized to fit in a palm. A shaft base 3 to which a toothbrush B is detachably attached is attached to a motor drive shaft 2 provided at the tip of the grip portion 1. Then, a switch 4 is provided on the side surface of the grip portion 1, the switch 4 is turned on, and the toothbrush B is reciprocally oscillated in the drive shaft 2 direction for use.

The toothbrush B has a shaft made of plastic. The shaft base 3 is adapted to be fitted and fixed to the motor drive shaft 2 of the grip portion 1, and the three shafts 5, 6, 7 are branched from the shaft base 3 in a short distance and substantially in parallel. The uniaxial shaft 5 of the central portion of the brush is made thicker than the biaxial shafts 6 and 7 of the other both sides so as to retain rigidity, and a brush 8 having a width wider than the axial width is provided downward of the tip. When it is desired to make the shaft 5 thin, a reinforcing metal rod is embedded in the plastic shaft to ensure rigidity. Further, the other two shafts 6 and 7 on both sides are made thinner than the shaft 5 at the central portion to ensure elasticity, and are formed inwardly curved downward on both sides with respect to the shaft 5. Then, as shown in (a) of FIG. 2, the tips of the shafts 6 and 7 are horizontally oriented with the bristle tips of the brushes 9 and 10 wider than the widths of the shafts 6 and 7 to face each other in a close state. . The bristle tips of the central brush 8 are arranged close to the upper side surfaces of the brushes 9 and 10 on both sides. FIG. 2B shows a use state in which the tips of the teeth 11 are sandwiched by the central brush 8 and the front and back of the teeth 11 are sandwiched by the brushes 9 and 10 on both sides from three directions. The shafts 6 and 7 on both sides are made to have appropriate elasticity so that opening and closing of at least the thickness of the teeth 11 can be ensured at least. Further, when the tip of the brush bristle is cut off, the teeth enter a smooth space between the brushes. In the figure, a battledore-shaped brush base is shown, but the brush base may be circular with a diameter larger than the axial width.

[0008]

[Effect of device]

 Since the present invention is configured as described above, it is possible to polish from three directions of the tooth, so that the entire surface of the tooth can be quickly and thoroughly polished at the same time. Therefore, the valuable time before going to work, which competes for one minute in the morning of office workers, can be effectively utilized. In addition, even infants who are not good at using ordinary toothbrushes will be able to easily and cleanly brush the back of their teeth without the help of their mother. Expected to be.

[Brief description of drawings]

FIG. 1 is a perspective view of the present invention.

FIG. 2 is a front view showing the state of the tip of each brush before (A) of the present invention is used and (B) is used.

[Explanation of sign]

 1 Grip 2 Motor drive shaft 3 Shaft base of toothbrush B 4 Switch 5 Shaft at the center of toothbrush B 6 Shaft at the side of toothbrush B 7 Shaft at the side of toothbrush B 8 Brush at the center 9 Side of toothbrush B Brush 10 Side brush 11 Tooth B Toothbrush

Claims (1)

[Scope of utility model registration request] 1. A toothbrush B at the tip of a motor drive shaft (2) having a motor and a battery built in a gripping part (1) forming a casing, and protruding outside the gripping part (1). In the electric toothbrush that is used by vibrating the toothbrush B by mounting the shaft base (3) of the above, the three shafts (5) from the shaft base (3),
(6) and (7) are branched in a short distance and substantially parallel to each other, and one of the shafts (5) has rigidity more than the other two shafts, and a brush (8) having a width wider than the shaft width is provided downward of its tip. The other two axes (6) and (7) are formed inwardly curved with respect to the one axis (5), and the tips (b) of the brushes (9) and (10) having a width wider than the axial width are in a close state in a horizontal direction. An electric three-branch toothbrush that faces each other.