CN2582562Y

CN2582562Y - Motor-driven toothbrush

Info

Publication number: CN2582562Y
Application number: CN 02250457
Authority: CN
Inventors: 徐继清
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-12-17
Filing date: 2002-12-17
Publication date: 2003-10-29
Anticipated expiration: 2012-12-17

Abstract

The utility model discloses an electric toothbrush, which solves the technical problem that teeth can be sufficiently cleaned at the time of brushing teeth. The inside of a housing body of a brush holder of the utility model is provided with a driving shaft connected to a motor, and the other end of the driving shaft is connected with an eccentric driving mechanism; the eccentric driving mechanism is connected with a brush bristle plate provided with brush bristles; an eccentric shaft of the eccentric driving mechanism is provided with two eccentric wheels between which a definite distance is spaced; the two eccentric wheels are arranged by the method that the long diameters of the two eccentric wheels are staggered with an angle of 180 DEG; the lower part of the brush bristle plate provided with the brush bristles is provided with a shifting fork with two wings; the central point of the shifting fork is arranged between the two eccentric wheels, and a definite distance is deviated between the central point and the geometric center of the brush bristle plate; the side surfaces of the two wings of the shifting fork respectively contact the outer circumferential surface of the two eccentric wheels. When the utility model is used, the brush bristle plate carries out the reciprocating rotary swinging motion and the translational motion relative to the geometrical center thereof, and the teeth can be well cleaned.

Description

Electric toothbrush

Technical field

This utility model relates to a kind of electric toothbrush.

Background technology

The electric toothbrush of prior art, some has the drive mechanism of a complexity, and transmission efficiency is low; Other has some is to make the bristle of toothbrush make the rotary oscillation of certain angle along the central point of hair brushing plate by an eccentric stiffener, when pivot angle one timing, because of oscillation center in the center of circle, the circular arc of the pieces swing on the circle hair brushing plate is less, its shortcoming is: the relative tooth of toothbrush bristle is only made simple rotational oscillating motion when brushing teeth, the bristle action is single, and tooth can not get effective cleaning.

Summary of the invention

The purpose of this utility model is that a kind of electric toothbrush will be provided, and its technical problem that will solve is when brushing teeth with toothbrush tooth to be cleared up fully.

For this utility model that achieves the above object adopts following technical scheme:

A kind of electric toothbrush, one power transmission shaft that is connected with motor is arranged in its brush handle shell, the other end of power transmission shaft is connected with eccentric drive mechanism, eccentric drive mechanism contacts with the hair brushing plate of band bristle, hair brushing plate top is circular, the camshaft of described eccentric drive mechanism is provided with the eccentric of two space one distances, the 180 ° of settings of staggering of this two eccentric major diameter, the hair brushing plate bottom of described band bristle is provided with the vertical hard plate of band both wings, the mid point of vertical hard plate is arranged between two eccentrics, depart from a distance with the geometric center of described hair brushing plate, the both wings side of vertical hard plate forms respectively with two eccentric outer circumference surfaces and contacts.

This utility model compared with prior art, the center of vertical hard plate and the geometric center of hair brushing plate depart from a distance, hair brushing plate is with the reciprocal rotary oscillation in the center of vertical hard plate, be equivalent to hair brushing plate and do reciprocal rotary oscillation and back and forth translational motion with respect to its geometric center, Gu increased the pieces pendulum radius on the hair brushing plate significantly, promptly increased the swinging distance of pieces and the linear velocity of motion, thereby the raising brushing efficiency makes when brushing teeth tooth well be cleared up.

Description of drawings

Fig. 1 is the structural representation of this utility model electric toothbrush embodiment.

Fig. 2 is the sketch map of this utility model hair brushing plate motion.

Fig. 3 is this utility model hair brushing plate motion analysis sketch map.

The specific embodiment

Below in conjunction with accompanying drawing this utility model is described in further detail.As shown in Figure 1 and Figure 2, one end of power transmission shaft 5 of the present utility model is connected with motor, the other end of power transmission shaft 5 is connected with the camshaft of eccentric drive mechanism 2, camshaft 2 is provided with the eccentric 1,3 of two space one distances, the 180 ° of settings of staggering of the major diameter of this two eccentric 1,3, hair brushing plate 4 bottoms of described band bristle are provided with the vertical hard plate of band both wings, the mid point O of vertical hard plate ₂Be arranged between two eccentrics 1,3, with the geometric center O of hair brushing plate 4 ₁Depart from a distance, the both wings side of vertical hard plate forms respectively with the outer circumference surface of two eccentrics 1,3 and contacts.Camshaft 2 usefulness metals are made, and the vertical hard panel material of hair brushing plate 4 both wings is thin-walled elastic metallic materials.

Under the drive of power transmission shaft 5, make unidirectional rotary motion at motor, and give coupled camshaft 2 with this Motion Transmission, eccentric 1,3 is with camshaft 2 coaxial rotation, 180 ° of settings because eccentric major diameter staggers, eccentric 1,3 is stirred the vertical hard plate both wings under the hair brushing plate 4 in turn when rotating, make vertical hard plate with its mid point O ₂For initial point is made the reciprocally swinging of certain angle, again because vertical hard plate mid point O ₂Geometric center O with hair brushing plate 4 ₁Off-centre, it is similar to its geometric center O that hair brushing plate is produced ₁Effect for the reciprocal circular motion of the reciprocal rotary oscillation of initial point and whole hair brushing plate 4.

Fig. 3 is this utility model hair brushing plate motion analysis sketch map, being described as follows of its motion structure:

L ₁Be eccentric major diameter; L ₂Be eccentric minor axis; The installation site in two eccentrics and hair brushing plate beat axle center as shown in Figure 3, ABCD constitute one trapezoidal, hair brushing plate beat center O ₂On trapezoid stringcourse, i.e. BO ₁=O ₁D, so: (L ₁+ L ₂)/2=O ₂O ₁, AC wire-wound axle center O when so two eccentrics rotate synchronously ₂Rotate.

Claims

1. electric toothbrush, one power transmission shaft that is connected with motor is arranged in its brush handle shell, the other end of power transmission shaft is connected with eccentric drive mechanism, eccentric drive mechanism contacts with the hair brushing plate (4) of band bristle, hair brushing plate (4) top is circular, it is characterized in that: the camshaft of described eccentric drive mechanism (2) is provided with the eccentric (1,3) of two space one distances, the 180 ° of settings of staggering of the major diameter of this two eccentric (1,3), the hair brushing plate of described band bristle (4) bottom is provided with the vertical hard plate of band both wings, the mid point (O of vertical hard plate ₂) be arranged between two eccentrics (1,3), with the geometric center (O of described hair brushing plate (4) ₁) depart from one apart from (O ₁O ₂), the both wings side of vertical hard plate forms respectively with the outer circumference surface of two eccentrics (1,3) and contacts.

2. electric toothbrush according to claim 1 is characterized in that: described camshaft (2) be metal material.

3. electric toothbrush according to claim 1 is characterized in that: the vertical hard panel material of described hair brushing plate (4) both wings is thin-walled elastic metallic materials.