CN2421961Y - Electric toothbrush - Google Patents

Abstract

The utility model relates to an electric toothbrush. The action of tooth brushing is completed by that a small battery (10) is served as a power supply, a miniature DC motor (8) is served as power, and toothbrush bristles (2) on a toothbrush shaft (3) are driven to move along the direction of tooth gaps in a mouth cavity; the power of the miniature DC motor is passed down to the toothbrush shaft (3) through a small gear (6), a big gear (5) and a transmission shaft (4). Tooth gaps and the surfaces of teeth can be thoroughly cleaned. The electric toothbrush has the advantages of simple structure, low fabrication cost, and novelty and practicality.

Description

Electric toothbrush

This utility model relates to a kind of novel tooth brushing device, especially can make the electric toothbrush of the error correcting method for brushing teeth of people.

At present, known toothbrush structure is to be made of brush, brush holder.Be implanted with fixed bristle on the brush.Be power with hands when using, allow bristle, but the total custom of people allows bristle in the dental surface transverse movement in the dental surface brushing, like this can only the clean surface and can't clean teeth space.Bristle is moved to the tooth tip along root of the tooth, could clean teeth space.

The purpose of this utility model provides a kind of electric toothbrush, makes people can consciously use correct method for brushing teeth when brushing teeth, the promptly laborsaving oral hygiene of easily and thoroughly doing well again.

The purpose of this utility model is achieved in that with the compact battery to be power supply, miniature cocurrent electromotor is a power, by the gear wheel interlock mutually on the pinion on the motor and the power transmission shaft, power is passed to the brush axle that is connected the power transmission shaft other end, the bristle that the rotation of brush axle drives dense planting on its circumference moves along teeth space, finishes the action request of brushing teeth.Plant in the bristle at brush axle middle part and be longer than two ends, therefore, the outer end integral body of bristle is the shuttle type, because bristle can move along teeth space, so can clean teeth space and dental surface up hill and dale, reaches the purpose of brushing teeth.

Adopt such scheme, can change the wrong tooth-brushing habit of the horizontal brush of people, make people's laborsaving cleaning teeth easily and thoroughly again when brushing teeth.

Below in conjunction with drawings and Examples, the utility model is described in further detail.

Fig. 1 is the vertical section structural map of electric toothbrush.

Fig. 2 is the circuit diagram of electric toothbrush.

Fig. 3 is the cross section structural map of the key position of electric toothbrush.

Among Fig. 1,1, a brush axle fixed cap; 2, bristle; 3, brush axle; 4, power transmission shaft; 5, gear wheel; 6, pinion; 7, trip bolt; 8, motor; 9, battery positive terminal; 10, battery; 11, brush holder lid; 12, battery cathode binding post; 13, commutator; 14, potentiometer.

In Fig. 1, in order to make with easy for installation, with whole brush body separated into two parts, a preceding part is made of bristle (2), brush axle (3), power transmission shaft (4) and gear wheel (5): a back part is by pinion (6), motor (8), battery (10), and the handle portion formed such as battery positive terminal (9), battery cathode binding post (12).These two parts connect into an integral body by trip bolt (7).

In Fig. 1, forward brush is the shuttle type body that plastic bruss axle (3) periphery is implanted with radial bristle (2), and the bristle of position, intermediate portion is longer than both ends, helps the dark people's teeth space of bristle.Shown in the A-A view among Fig. 3, the front end spindle nose of brush axle becomes cylindrical, with a conveniently detachable brush axle fixed cap (1) it is fixed in the axis hole of brush body front end, and is free to rotate.The square hole that the C-C view is depicted as square column type and power transmission shaft (4) front end axle center among back one end such as Fig. 3 matches, and the brush axle is rotated synchronously with power transmission shaft, and also dismounting brush spool easily is so but many brushes of a brush body adapted.A gear wheel (5) is fixed in the power transmission shaft rear end, shown in D-D view among Fig. 3, it with motor (8) on pinion (6) mutually interlock accept the power of motor, are the rotating speeds that are lower than motor for the rotating speed that makes brush with two gears here, can increase the rotating torque of brush simultaneously.Motor mounting is thereafter a battery case at the front end of brush holder, is used for installing No. 5 or No. 7 batteries (10) one joints are powered for motor.Brush holder lid (11) is in a side at gear wheel place, and its dismounting can make things convenient for the installation of motor and the replacing of battery.When making, require brush holder to cover when closing the spare time and will seal,, can protect motor and battery in order to waterproof.In the lateral appropriate location of brush holder commutator (13) and potentiometer (14) are installed, potentiometer is made on and off switch, can change the electric current in the circuit simultaneously, thus the rotating speed of scalable motor.Commutator is used for changing the polarity of motor power, can change the rotation direction of motor, thereby changes turning to of brush, brushes easily, lower teeth.The circuit diagram of electric toothbrush as shown in Figure 2, electric current by anode through battery positive terminal (9) to armature contact of commutator, when commutator closes at arbitrary limit of fixed contact on its both sides, electric current flows in the coil of motor through this fixed contact, flow out other fixed contact and armature contact again by commutator, flow back to battery cathode through potentiometer (14), battery cathode binding post (12) again, potentiometer switch spare time this moment closes.Four fixed contacts of commutator are intersected continuous in twos, thus not busy in the opposite direction fashionable when commutator, just can change the galvanic polarity that is added on the motor, thereby change the rotation direction of motor.

Claims (3)

1, a kind of electric toothbrush, it is characterized in that: powered to motor (8) by potentiometer (14), commutator (13) by battery (10), motor drives brush axle (3) by pinion (6), gear wheel (5), power transmission shaft (4) moves in a circle bristle (2).

2, electric toothbrush according to claim 1 is characterized in that: bristle (2) is planted on the circumference of brush axle (3), and the bristle at middle part is longer than the bristle on both sides, and bristle periphery integral body is the shuttle type.

3, electric toothbrush according to claim 1 is characterized in that: gear wheel (5) and pinion (6) are formed the reduction train of electric toothbrush.

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