JPH0647298Y2 - Electric rotary toothbrush - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a toothbrush, and more particularly to an electric rotary toothbrush capable of rotating a brush (hair bundle) and moving the hair bundle forward and backward.

[0002]

2. Description of the Related Art A commonly used toothbrush is integrally molded, and a toothbrush is performed by grasping a handle portion with a hand and moving it vertically and horizontally. However, such a toothbrush cannot effectively remove the residue left between the teeth. In addition, it damages the enamel of the tooth base and reduces the resistance of the teeth, making them prone to inflammation.

[0003]

DISCLOSURE OF THE INVENTION The present invention eliminates the above-mentioned drawbacks, can completely remove the dust that has entered the tooth gap, and rotates the hair and moves the hair forward and backward in the longitudinal direction. It is an object of the present invention to provide an electric rotary toothbrush that can be used.

[0004]

Means for Solving the Problems The above-mentioned problems are associated with a pair of hollow handles which are assembled in pairs so as to oppose each other on the left and right sides;
An upper opening provided on the upper surface of the tip of the handle; a plurality of lower openings provided on the lower surface of the tip of the handle; a lid for closing the upper opening; an inner side of the tip A plurality of bindings that are housed in the lower opening and are arranged to face the lower opening, and that hold a hair bundle that penetrates the lower opening on the lower surface; A plurality of springs that exert an elastic force on the binding in the direction of pushing outward; a central axis of the binding is movably held in the axial direction, and the binding is rotated about the central axis. A pinion fitted to the central shaft; a single worm gear that meshes with the plurality of pinions; a motor that rotates the worm gear; a power supply that supplies power to the motor; a current supply circuit that turns on and off. Electric rotation characterized by comprising a switch and; It is achieved by the toothbrush.

[0005]

Embodiments will be described in detail with reference to the accompanying drawings. FIG. 1 is an exploded perspective view of an embodiment of the toothbrush of the present invention. In FIG. 1, reference numeral (5) is a hollow handle, which indicates the left half of the symmetrically assembled pair. An upper opening (53) is provided on the upper surface of the tip of the handle (5), and a plurality of lower openings (5) are provided on the lower surface.
2) is provided. The upper opening (53) is adapted to be sealed by the lid (1) after assembly (see FIG. 4). The reference numeral (41) refers to a tie, to the lower surface of which the hair bundle (7) is fixed, the hair bundle (7) being located at the lower opening (5).
It penetrates 3) and protrudes to the outside. Binding (41)
Is housed inside the tip and has a lower opening (52)
Are located opposite to. Binding (41) and handle (5)
Springs (22, 23) are provided between the inside of the tip of the hair and the elastic force of the springs (22, 23) to constantly push the hair bundle (7) outward. A pinion (3) is keyed to the central axis of the binding tool (41). As shown in FIG. 3, the pinion (3) meshes with the worm gear (54), the worm gear (54) is connected to a motor (not shown), and a power source (for example, a battery) for supplying electric power to the motor is provided. A switch for turning on / off the current supply circuit is also provided.

[0006]

When the switch is operated to rotate the motor, the worm gear (54) rotates, and the pinion (3) meshing with the worm gear (54) rotates. Since the pinion (3) is keyed to the binding tool (41), the binding tool (41) rotates, and thus the hair bundle (7) fixed to the lower end of the binding tool (41) rotates. Spring (22,2
3) constantly pushes the hair bundle (7) outward to maintain the state shown in FIG. 2, but when the tip of the hair bundle (7) is pressed against the teeth, the reaction force causes the hair bundle (7) to move. ) Retracts as shown in FIG. The degree of withdrawal depends on the pressing force, so that the user can adjust the degree as he sees fit.

[0007]

Since the present invention has the above-described structure and operation, it is possible to perform an adjusting operation arbitrarily according to the magnitude of the force used by the user. There is no branching and no damage to the teeth.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view showing a state before use in FIG.

3 is a perspective view of a part of FIG. 2. FIG.

FIG. 4 is a vertical cross-sectional view showing the state in use of FIG.

[Explanation of symbols]

 1 Lid 3 Pinion 5 Handle 7 Hair bundle 22, 23 Spring 41 Binding tool 53 Lower opening 52 Upper opening

Claims (1)

[Scope of utility model registration request] 1. A pair of hollow stalks (5), which are assembled in a pair so as to face each other symmetrically; an upper opening (53) provided on the upper surface of the tip of the stalk 5, and a tip of the stalk 5. A plurality of lower openings (52) provided on the lower surface of the section; a lid (1) for closing the upper openings (53); 52) and a plurality of ties (41) arranged to face the lower opening (52) and holding a hair bundle penetrating the lower opening (52); provided between the ties (41) and the handle (5) A plurality of springs (22, 23) that exert an elastic force on the binding tool (41) in the direction of pushing the hair bundle (7) outward; and the central axis of the binding tool (41) is axially movable. A pinion (3) fitted to the central axis so as to hold and rotate the binding tool (41) around the central axis. A single worm gear (54) meshing with a plurality of the pinions (3); a motor for rotating the worm gear (54); a power supply for supplying power to the motor; a current supply circuit for turning on; An electric rotary toothbrush, characterized in that it comprises an off switch and a switch.