CN2636838Y

CN2636838Y - Electric toothbrush

Info

Publication number: CN2636838Y
Application number: CN 03247087
Authority: CN
Inventors: 黄达; 廖建明
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-06-07
Filing date: 2003-06-07
Publication date: 2004-09-01
Anticipated expiration: 2013-06-07

Abstract

The utility model relates to an electric toothbrush, which comprises a brush rod, a revolving brush hair seat arranged on the head part of the brush rod, and a driving axle arranged inside the brush rod, wherein an eccentric wheel mechanism consists of a rotary wheel and an eccentric axle is arranged transversely between the driving axle and the brush hair seat, an elastic axle sleeve is suited at the front end of the eccentric axle, and the axle sleeve is extended into the vertical slot of the brush hair seat, an elastic piece is arranged vertically between the brush hair seat and the head part of the brush rod; a positioning pin bolt is arranged at the front end of the brush rod head, the pin bolt rod is extended into a circular arc slot arranged horizontally at one end corresponding to the vertical slot of the brush hair seat,. The utility model has the advantages of flexible rotation, low noise and long service life.

Description

A kind of electric toothbrush

Technical field

This utility model relates to the toilet article articles for use, especially relates to a kind of electric toothbrush flexible, that noise is little of rotating.

Background technology

The appearance of electric toothbrush has made things convenient for people's life.At present, the critical piece head toothbrushes of electric toothbrush has been divided two major types by the brushhead motion mode: linear reciprocation swing brush and reciprocating rotating (circumgyration) brush.And the reciprocating rotating brush can be divided into two kinds of basic structures: utilize linkage realization brush reciprocating rotating and utilize eccentric stiffener to realize the brush reciprocating rotating.

The brush-head structure of the reciprocating rotating that the tradition eccentric structure drives, it is simple in structure, but is subjected to brush, the restriction of the brush holder support bodily form.Conventional eccentric throw is 0.5～1.8mm, and the application point radius of gyration is 4.0～8.0mm.In this restriction on the parameters with do not produce under the condition of movement interference, maximum angle of revolution can only reach 27 degree, otherwise very easily produces the motion dead angle, stuck phenomenon occurs or effectively output torque is too small, the excessive phenomenon of noise, no essence proper value.Since use the rigidity eccentric structure, essential objective reality fit clearance, and the existence in gap is clashed into the rigid element that runs up mutually becomes the noise source that is difficult to overcome.Therefore the angle of revolution to occur little unavoidablely for traditional eccentric stiffener, shortcomings such as toothbrushing effect difference.In order to overcome noise, routine can only should have various oils and fatss to be lubricated in a large number, but in actual applications, because under the effect of dentifrice abrasives and hydrolysis, make the very fast decomposition failure of lubricant, cause the mechanism wear aggravation, the rapid property of noise decibel value increase in a short time, pendulum angle sharply reduces, and actual Acceptable life generally can only reach one month.

Summary of the invention

The purpose of this utility model is to solve the technical problem that prior art not working, noise are big, the life-span is short, the electric toothbrush of proposes a kind ofly to rotate flexibly, noise is little, the life-span is grown.

The technical solution of the utility model is a kind of electric toothbrush of structure, comprise brush holder support, be located at turned round hair brush base on this brush holder support head, be located in the described brush holder support power transmission shaft, this power transmission shaft and described hair brush base be provided with the eccentric mechanism of forming by moving runner and eccentric shaft between horizontal, the front end of described eccentric shaft is with an elastic shaft sleeve, and this axle sleeve stretches in the described hair brush base cannelure.

Vertically be provided with elastic component between described hair brush base and the described brush holder support head; Described brush holder support head front end is provided with shop bolt, and this pin bar stretches in the horizontally disposed arc groove of the relative end of cannelure in the described hair brush base.

The scope of described eccentric shaft eccentric throw is 1.0 to 1.8 millimeters.

This utility model adopts elastomeric eccentric shaft and elastic component to realize compensation fit clearance automatically, can realize brush large-angle slewing (greater than 30 degree), experimental data result shows can realize low noise operation (apart from brush 10CM less than 70dB) under unlubricated condition, at 100% saturated toothpaste solution, brush axis of rotation direction loads under the 170gf pressure, after accumulated operating time is 100 hours, average noise is less than 65dB, woollen brush base and brush holder support cooperate the position wear extent less than 0.3mm, satisfy the requirement that accumulation was used in 13.5 hours far away.

Description of drawings

Below in conjunction with drawings and Examples this utility model is described in further detail, wherein:

Fig. 1 is this utility model partial sectional view;

Fig. 2 be Figure 1A-A to partial schematic diagram.

The specific embodiment

Shown in Fig. 1,2, be a preferred embodiment of the present utility model.A kind of electronic tooth, comprise brush holder support 3, be located at turned round hair brush base 1 on this brush holder support head 9, be located in the described brush holder support power transmission shaft 4, this power transmission shaft and described hair brush base be provided with the eccentric mechanism of forming by moving runner 5 and eccentric shaft 6 between laterally, the scope of described eccentric shaft 6 eccentric throws is 1.0 to 1.8 millimeters, the front end of described eccentric shaft 6 is with an elastic shaft sleeve 2, this axle sleeve stretches in the described hair brush base cannelure 10, its fit clearance is slightly interference cooperation, is just realizing the zero clearance to protect.Vertically being provided with spring 7 between described hair brush base and the described brush holder support head, also can be shell fragment; Described brush holder support head front end is provided with the shop bolt 8 of interference fit, this pin bar stretches in the horizontally disposed arc groove 11 of cannelure 10 relative ends in the described hair brush base, in order to limit the length travel of hair brush base, also can adopt the auxiliary displacement that limits hair brush base of button bit.

Described power transmission shaft 4, eccentric shaft 6, spring 7, pin 8 adopt the rustless steel that does not contain heavy metal to make, described eccentric 5 is made by match steel (POM) material, described axle sleeve 2 by wear-resisting, (for example: PE) make possess elasticity, any surface finish, anti-chemical aging and nontoxic material.

Transmission of the present utility model is: power transmission shaft drives eccentric mechanism 5,6 and rotates, stretching into elastic shaft sleeve 2 in the described hair brush base cannelure 10 slides in this groove, because the effect of eccentric throw makes hair brush base make reciprocating rotating around its axle center, thereby realizes its function.

The elastic shaft sleeve 2 that is with on the described eccentric shaft, make this have flexible axle character its act as: when woollen brush base 1 revolution placed maximum position, woollen brush base cannelure position deformed axle sleeve 2, avoids the dead point of moving; Under high capacity or impact load effect, woollen brush base 1 cannelure position makes axle sleeve 2 that deformation take place, and the practical function eccentric throw is reduced automatically, reduces the angle of revolution automatically to reach, and the constant output moment of torsion still can keep suitable dynamics in actual brushing teeth; In operation process, woollen brush base cooperates the position high-speed impact with axle sleeve, and the elastomeric material of axle sleeve can effectively absorb and the buffering collision of closed energy, and running noise is effectively reduced; During axle sleeve 2 designs, fit dimension is slightly larger than the groove position of woollen brush base, because the elastic material properties of axle sleeve still can keep good behavior in service, has realized that no gap cooperates, and under the condition of non-lubricating, has kept low running noise.

Described spring 7 has compensating action, and it shows as: compensate the fit clearance that the woollen brush base and the brush holder support accuracy of manufacture are drawn automatically; Automatically compensated high-speed cooperates the wearing and tearing that running brings, and from then on to whole zero impact energy that cooperates effectively absorption to run up and bring that keeps, reduces noise; Balance the actual counteracting force of brushing teeth and transmitting by bristle, reduced woollen brush base and brush holder support mating surface pressure, effectively reduce the rate of depreciation of mating surface.

Claims

1, a kind of electric toothbrush, power transmission shaft (4), this power transmission shaft and the described hair brush base of comprise brush holder support (3), be located at turned round hair brush base (1) on this brush holder support head (9), being located in the described brush holder support are provided with the eccentric mechanism of being made up of moving runner (5) and eccentric shaft (6) between laterally, it is characterized in that: the front end of described eccentric shaft (6) is with an elastic shaft sleeve (2), and this axle sleeve stretches in the described hair brush base cannelure (10).

2, electric toothbrush according to claim 1 is characterized in that: vertically be provided with elastic component (7) between described hair brush base (1) and the described brush holder support head (9); Described brush holder support head front end is provided with shop bolt (8), and this pin bar stretches in the horizontally disposed arc groove (11) of the relative end of cannelure in the described hair brush base (10).

3, electric toothbrush according to claim 2 is characterized in that: the scope of described eccentric shaft (6) eccentric throw is 1.0 to 1.8 millimeters.

4, according to claim 2 or 3 described electric toothbrushes, it is characterized in that: described elastic component (7) is a spring.