CN201019856Y

CN201019856Y - Electric toothbrush

Info

Publication number: CN201019856Y
Application number: CNU2007200333861U
Authority: CN
Inventors: 管光青
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-01-13
Filing date: 2007-01-13
Publication date: 2008-02-13
Anticipated expiration: 2017-01-13

Abstract

The utility model discloses an electric toothbrush designed to overcome the shortcomings of a current electric toothbrush that the toothbrush fails to prevent toothpaste foams from flying out of the oral cavity because of the centrifugal force in use, and has a drive mechanism with a complex structure and low reliability in work. The electric toothbrush comprises a shell-type toothbrush handle and a toothbrush head on which toothbrush bristles are mounted, and the toothbrush handle is internally provided with a battery, a switch and a motor. The utility model is characterized in that the driving rotating shaft of the motor is connected with the toothbrush head via two meshing bevel gears, and the axial lead of the driving rotating shaft of the motor is vertical to the rotating axial lead of the toothbrush head. The utility model prevents toothpaste foams from flying out of the cavity in use, and has the advantages of a simple structure, high working reliability and low manufacturing cost.

Description

Electric toothbrush

(1) technical field:

This utility model relates to toothbrush, belongs to the small stores field, relates in particular to the electric toothbrush that drives the head toothbrushes rotation by miniature motor.

(2) background technology:

Existing electric toothbrush, comprise a elongate housing as handle, install motor in the housing along its length, the reduction box that is made of plurality of gears is installed on the motor shaft, the head toothbrushes of device one pole shape on the output shaft of reduction box, the central axis of pole shape head toothbrushes and the centrage of above-mentioned elongate housing coincide, the vertical bristle of installing on the outer wall of head toothbrushes.When brushing teeth, drive the coaxial rotation of brush by motor shaft, grip elongate housing with hands, the bristle on the head toothbrushes is rotated with brush, bristle is brushed teeth along the teeth space direction.This toothbrush can make the food slag in the teeth space brush totallyer, but meanwhile, toothpaste foam also can throw away the oral cavity by centrifugal action along with the rotation of bristle, flies to and gargles the pond everywhere or on the medicated clothing, clear up, and makes the people feel trouble.

For improving above-mentioned shortcoming, the patent No. is the Chinese utility model patent of 200520077487.X, another kind of electric toothbrush is disclosed, it also comprises an elongate housing as handle, install motor in the housing along its length, meshing gear is installed on the motor shaft, the output shaft of meshing gear is installed a discoid head toothbrushes by pulley gear, the central axis of discoid head toothbrushes and the centrage of above-mentioned elongate housing are perpendicular, on the disc face of head toothbrushes bristle are installed.When brushing teeth, by the bristle rotation that motor drives brush and is installed on it by meshing gear device and pulley gear, with the bristle on the hands gripping elongate housing control head toothbrushes, rotation around teeth space, bristle also can enter in the teeth space, and the food slag is brushed away.The toothbrush of this structure, bristle are all the time at the oral cavity internal rotation, and toothpaste foam can not throw away the oral cavity, but it makes the head toothbrushes rotation by meshing gear and the transmission of two kinds of devices of belt pulley.Structure is complicated, and the reliability of belt pulley transmission is relatively poor, and when head toothbrushes was brushed teeth in the oral cavity, driving belt was easy to get loose.

(3) summary of the invention:

At the shortcoming of above-mentioned utility model patent, the applicant has carried out improving research, designs and a kind of improved electric toothbrush is provided, and when brushing teeth with it, toothpaste foam not only can not throw away the oral cavity, and drive mechanism is simple, is easy to make, and manufacturing cost reduces.

The technical solution of the utility model is as follows: electric toothbrush, comprise handle and head toothbrushes, bristle is installed on the head toothbrushes, handle is an elongate housing, order is installed battery, switch and motor in the elongate housing, is electrically connected with lead between each parts, and motor shaft is connected with an end of drive shaft, the other end of drive shaft is connected with head toothbrushes by gear drive, and the axial line of described drive shaft and the rotational axis line of head toothbrushes are perpendicular.It is right that above-mentioned loading drive gear is changed to the bevel gear that is meshed.

In this utility model, by motor transmission shaft by gear drive to directly being connected with head toothbrushes, by gear mesh transmission and deceleration, structure is greatly simplified, the functional reliability height, manufacturing cost reduces.The rotational axis line of head toothbrushes and the rotational axis line of motor transmission shaft are perpendicular, make that the bristle on the head toothbrushes rotates in the oral cavity when brushing teeth, and toothpaste foam throws away the oral cavity when avoiding brushing teeth.

(4) description of drawings:

Fig. 1 is the sketch map of this utility model structure;

Fig. 2 is Figure 1A portion enlarged drawing.

(5) specific embodiment:

See Fig. 1, this utility model comprises handle 1 and head toothbrushes 10, and head toothbrushes 10 is a disc-shape, and the bristle 11 of chemical fibre silk (for example nylon yarn) material is installed on the head toothbrushes 10.Handle 1 is an elongate housing, and order is installed battery 2, power supply two-way switch 3, minitype permanent magnetism direct current generator 4 along its length in elongate housing, between be electrically connected by prior art with lead.The battery 2 of permanent magnet DC motor 4 can be with 1.5 volts of batteries.The power output shaft of motor 4 is connected with an end of drive shaft 6 by joint 5, and the other end of drive shaft 6 is connected with head toothbrushes 10 by gear drive.This gear drive also plays a part decelerator, and rotating speed of motor is slowed down is the rotating speed of head toothbrushes 10.See Fig. 1 and Fig. 2, the most preferred embodiment of this gear drive is got the

bevel gear

7 and 9 that is meshed, the upper end of drive shaft 6 connects bevel gear 7, the 45 degree is got at

bevel gear

7 and 9 conical surface base angle respectively, 8 for installing the rotating shaft of bevel gear 9, rotating shaft 8 is supported in the end of handle elongate housing, and the termination portion of rotating shaft 8 connects with socket or is threaded installs head toothbrushes 10.After certain hour was used in electric toothbrush, head toothbrushes 10 can be changed.The axial line of drive shaft 6 is positioned on the centrage of handle 1, and is perpendicular with the rotational axis line of head toothbrushes 10.Above-mentioned elongate housing 1, joint 5, rotating shaft 6, bevel gear 7 as handle and 9 and rotating shaft 8 all adopt non-toxic plastic to press prior art to make, for example can adopt nontoxic vinyon.Between each working of plastics and with miscellaneous part between be connected and adopt general mosaic texture.Adopt the parts of plastic construction can make cheap for manufacturing cost; Parts connect the employing mosaic texture, and without securing member, make assembling more convenient, enhance productivity.When brushing teeth, the velocity of rotation of head toothbrushes 10 is determined by test, is 500～600 commentaries on classics to Toothbrush for adult, and child's toothbrush is 250～400 commentaries on classics, and this rotating speed depends on the rotating speed of motor 4 and the gear ratio of

bevel gear

7 and 9, can design and regulate by prior art.Motor 4 can be selected the commercially available prod for use.The commercially available two-way switch of switch 3 changes the rotation direction of head toothbrushes by it.

Connection between drive shaft 6 and head toothbrushes 10 shown in Figure 1, adopt bevel gear to carry out transmission and speed change to 7 and 9, with the vertical direction of motor shaft rotate become head toothbrushes and on bristle with the rotation of lateral shaft, for simple structure, as most preferred embodiment.Connection between drive shaft 6 and head toothbrushes 10 adopts other to produce the gear drive of equivalent technologies effect, belongs to scope of the present utility model equally.

When brushing teeth with this utility model, hand-held handle 1, power-on two-way switch 3, head toothbrushes 10 and on bristle rotate around horizontal rotating shaft 8, allow bristle around teeth space, rotate, and make the part bristle stretch into teeth space, with the food slag of teeth space and the dirt outwash on the facing.

Claims

1. electric toothbrush, comprise handle and head toothbrushes, bristle is installed on the head toothbrushes, handle is an elongate housing, order is installed battery, switch and motor in the elongate housing, is electrically connected with lead between each parts, and motor shaft is connected with an end of drive shaft, the other end that is characterised in that drive shaft is connected with head toothbrushes by gear drive, and the axial line of described drive shaft and the rotational axis line of head toothbrushes are perpendicular.

2. by the described electric toothbrush of claim 1, it is right to be characterised in that described loading drive gear is changed to the bevel gear that is meshed.