KR101015381B1 - An electric toothbrush - Google Patents

Abstract

PURPOSE: An electric toothbrush is provided, which makes motion embodiment for teeth brushing motion of a head main body with bristles simple. CONSTITUTION: An electric toothbrush comprises: a central shaft which is formed in one end of an inner receptor and a receiving part and faces outside; a handle body(10) equipped with a plate having an eccentric circular hole; a drive motor built in the other side of the receiving part of the handle body; a drive unit including a power supply unit; a rotor which is inserted into the circular hole of the plate and rotates; a power transmission unit including a driving shaft facing outside; a head main body(40) which swings; and a connection unit for connection and separation of the handle body and head main body.

Description

Electric Toothbrush {AN ELECTRIC TOOTHBRUSH}

TECHNICAL FIELD The present invention relates to a powered toothbrush, and more particularly, to a powered toothbrush having a simple implementation of a brushing movement, ie, a swinging movement, of a head body having bristles.

Korean Patent Publication No. 1997-0009248 (published on June 9, 1997, hereinafter referred to as `` advanced technology '') `` Electric toothbrush '' is presented,

The prior art is a powered toothbrush comprising a toothbrush body, a dynamometer seated inside the toothbrush body and a brush portion inserted into the dynamometer to extend to the toothbrush body and vibrated by the dynamometer, wherein the dynamometer is a rotational force of the motor and the driving motor. Rotating by the main gear and the eccentric cam integrated with the main gear and the vertical cam horizontally moved as the eccentric cam rotates and the vertical cam is rolled in the horizontal direction when the vertical cam is moved horizontally and the brush insertion axis and the vertical movement Consists of a shaft connecting portion for converting the horizontal movement of the cam into a rotational movement of the brush insertion shaft, the brush portion is received by the main body connecting portion that can be coupled to and separated from the brush insertion shaft and the rolling rotation angle of the brush insertion shaft within the rotation angle Brush head by the rotating rod and the rotating force of the rotating rod A technique wherein the pre-part of the power transmission.

The prior art is a toothbrush body and the brush portion can be separated and can be used to replace several brush parts with a single toothbrush body, the toothbrush rod reciprocates in the roll lip direction at the same time the bristles rotate within a certain angle and minimize the cost of parts To provide a cheap electric toothbrush,

The configuration for brushing operation of the brush part is very complicated and may cause frequent failures, and also may be a factor that increases the price according to the number of parts and the assembly process.

In order to solve the above problems, the electric toothbrush according to the present invention,

A handle body including an inner accommodating part, and a plate formed at one end of the accommodating part and having a central axis and an eccentric circular hole facing outward;

A driving unit including a driving motor embedded in the other end of the receiving body of the handle body and a power supply unit for the driving motor;

A power transmission unit inserted into the circular hole of the plate, the rotor being rotated by receiving a driving force from the driving motor of the driving unit, and a driving shaft eccentrically formed on the rotor and facing outward;

A bristle is arranged at one end, an insertion portion arranged at the other end so that the central axis of the plate is rotatably fitted, and a recess in which the driving shaft of the power transmission unit is fitted but long in the center direction of the insertion portion. A head body which includes a swing motion by the power transmission unit; And

Connecting means for mutual coupling and separation of the handle body and the head body;

It is made, including.

The connecting means of the first embodiment

Coupling portion extending from the handle body to the central axis end of the plate (端 部),

A slit radially formed in the coupling portion, and

Corresponding coupling portion extending from the insertion end of the head body

Consist of,

The coupling portion pressed while passing through the insertion portion is characterized in that the pressure is released from the corresponding coupling portion.

The connecting means of the second embodiment

A cover part formed at one end of the handle body to surround an outer circumferential surface of the other end of the head body;

Annular coupling portion formed along the inner peripheral surface of the cover portion,

An annular corresponding coupling portion formed to correspond to the annular coupling portion along the outer circumferential surface of the other end of the head body;

Cover slit radially formed in the cover portion

Consist of,

The annular coupling portion pressed while passing the other end of the head body is characterized in that the pressure is released from the annular corresponding coupling portion.

On the other hand, the surface of the central axis or the insertion portion, or both, characterized in that the first coating layer for reducing friction is formed.

On the other hand, it is characterized in that the second coating layer for reducing friction is formed on the surface of the drive shaft or the recess, or both.

Electric toothbrush according to the invention,

Simple configuration for the swing movement of the head body with the bristles,

The head body and the handle body can be easily assembled and separated by easy and simple,

When brushing up and down on the tooth structure, the plaque removal ability is excellent due to the bristles through the swing movement of the head body.

Among the components for the swing movement of the head body, in particular, there is an effect of providing friction reduction means for preventing damage and noise caused by friction in the central shaft, the insertion portion, the driving shaft, and the recess.

1 is a three-dimensional exploded view showing the electric toothbrush according to the present invention,
Figure 2 is a side cross-sectional view for showing a connecting means of the first embodiment in the electric toothbrush according to the present invention,
Figure 3 is a cross-sectional side view for showing the connecting means of the second embodiment in the electric toothbrush according to the present invention,
Figure 4 is a side cross-sectional view showing the connecting means of the first and second embodiments in the electric toothbrush according to the present invention,
5 is a schematic diagram showing an operation process of the electric toothbrush according to the present invention;
Figure 6 is a cross-sectional side view for showing the first and second coating layer in the electric toothbrush in accordance with the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings.

As shown in Figures 1 to 6, the electric toothbrush according to the present invention,

The handle body 10, the drive unit 20, the power transmission unit 30, the head body 40 and the connecting means 50 is large.

Looking at each configuration,

Handle body 10 is

As shown in Figures 1 to 4,

Receiving portion 11 formed therein, and

A plate 12 formed at one end of the accommodating part 11 and having a central axis 121 facing outward and a circular hole 122 eccentrically positioned thereon.

It is made, including.

It has a substantially cylindrical shape, but one end portion is made smaller in diameter than the other end portion.

As an example, the present invention is not limited thereto and may be modified and changed in various forms that are easy to grip.

And the handle body 10 is

Switch 13 for turning on / off the power connection between the drive motor 21 and the power supply unit 22 of the drive unit 20 to be described later on the outer peripheral surface, and

Cover 14 for attaching and detaching the power supply 22 in the other end

It further includes.

The drive unit 20

As shown in FIG. 2,

A drive motor 21 embedded in the other end of the receiving portion 11 of the handle body 10, and

Power supply unit 22 for applying power to the drive motor 21

It is made, including.

In this case, the power supply unit 22 is preferably a primary or secondary battery in consideration of portability and ease of use for the electric toothbrush of the present invention.

The power transmission unit 30

As shown in FIG. 4,

The rotor 31 is inserted into the circular hole 122 of the plate 12 and rotated by receiving a driving force from the drive motor 21 of the drive unit 20, and

Drive shaft 32 formed eccentrically and outwardly on the rotor 31

It is made, including.

Here, the term 'outwardly facing' means a direction toward the head body 40 that is coupled to the handle body 10.

And in the power transmission unit 30

The rotor 31 may be directly connected to the shaft 211 provided in the drive motor 21 of the drive unit 20,

As shown in Figure 4, it may be connected by the relay means 33,

The relay means 33

A drive gear 331 fixedly coupled to an end of the shaft 211 of the drive motor 21;

A reduction gear 332 engaged with the driving gear 331, and

Relay rod 333 connecting the center of the reduction gear 332 and the rotor 31

.

Therefore, when the shaft 211 of the drive motor 21 is rotated, the rotor 31 is rotated together via the [drive gear 331-reduction gear 332-relay rod 333].

Head body 40 is

As shown in Figures 1 to 4,

To be a swing (swing) movement by the power transmission unit 30,

Bristles 41 arranged at one end,

An insertion part 42 arranged at the other end and into which the central axis 121 of the plate 12 is rotatably fitted;

Recess 43 is inserted into the drive shaft 32 of the power transmission unit 30 is formed long in the direction of the center of the insertion portion 42

It is made, including.

The 'swing motion' means that the head body 40 is reciprocated as if the head body 40 is shaken from side to side with respect to the central axis 121.

And the bristle 41 is a structure arranged in a straight form,

Or it may be a structure that is arranged in a circular form, it may be modified and changed in various forms.

In particular, the bristle 41 as shown in Figures 5a to 5d, the cross-sectional shape is formed so that the upper portion is curved (彎曲), the brush head 41 by the swing movement of the head body 40 when brushing up and down on the tooth structure As the end portion is in constant pressure contact between the tooth and the tooth, improvement in plaque removal performance can be expected.

The connecting means 50

For the mutual coupling and separation of the handle body 10 and the head body 40,

In the present invention, it can be largely made of the first and second embodiments,

First, in order to distinguish each embodiment, reference numerals of the connecting means of the first embodiment are designated as '50A', and reference numerals of the connecting means of the second embodiment are designated as '50B'.

As in Figure 2, the connecting means 50A of the first embodiment

Circular coupling portion 51 is formed in the handle body 10, the extended portion formed in the end of the central axis 121 of the plate 12,

A slit 52 formed radially on the coupling part 51, and

Corresponding coupling portion 53 that is extended to correspond to the coupling portion 51 at the end of the insertion portion 42 of the head body 40

.

Therefore, the coupling part 51 pressed while passing through the insertion part 42 is deformed (opened) by the slit,

The pressure-deformed coupling portion 51 is caught by being released from the pressure while being positioned in the corresponding coupling portion 53.

As in Figure 3, the connecting means 50B of the second embodiment

A cover part 55 formed at one end of the handle body 10 and surrounding the outer circumferential surface of the other end of the head body 40;

Annular coupling portion 56 is formed along the inner peripheral surface of the cover portion 55,

An annular corresponding coupling portion 57 formed to correspond to the annular coupling portion 56 along an outer circumferential surface of the other end of the head body 40, and

Cover slit 58 formed radially on the cover portion 55

Is done.

Therefore, the annular coupling portion 56 pressed while passing through the other end of the head body 40 is deformed (opened) by the cover slit 58,

The annular coupling portion 56 that is deformed under pressure is caught by being released from the pressure while being positioned in the annular corresponding coupling portion 57.

And the annular coupling portion 56 may be protruded or concave shape,

The annular corresponding coupling portion 57 may be recessed or protruded to correspond to the annular coupling portion 56.

As shown in FIG. 4, both the connecting means 50A and 50B of the first and second embodiments of the connecting means 50 may be implemented in the electric toothbrush according to the present invention.

On the other hand, in order to reduce friction against the area

As shown in FIG. 6,

Friction reducing first coating layer (L1) may be formed on the surface of the central axis 121, the insertion portion 42, or both,

6, as shown in

A friction reducing second coating layer L2 may be formed on the surfaces of the driving shaft 32, the recess 43, or both.

In the present invention, the first coating layer (L1) is formed on both the central axis 121 and the insertion portion 42,

In addition, a second coating layer L2 is formed on both the driving shaft 32 and the recess 43.

The first and second coating layers L1 and L2 may be made of one selected from a teflon coating layer, a hard coating layer, a semi-hard coating layer, and an epoxy coating layer.

On the other hand, look at the operating state of the electric toothbrush according to the invention,

As shown in FIGS. 5A-5D,

By the drive motor 21 is operated by receiving power from the power supply 22

The shaft 211 is rotated,

The drive gear 331, the reduction gear 332, the relay rod 333 and the rotor 31 of the relay means 33 to rotate in conjunction with this,

In addition, the drive shaft 32 eccentrically formed on the rotor 31 is to be orbital movement based on the center of the rotor 31.

At this time, by the drive shaft 32 is to be orbital movement, as the recess 43 is reciprocated mutually in the left and right directions on the orbit of the drive shaft 32,

As a result, the head body 40 has a swing movement reciprocated in the left and right directions relative to the central axis 121.

In the above description of the present invention with reference to the accompanying drawings with reference to the attached "electric toothbrush" having a specific shape and structure, but the present invention can be variously modified and changed by those skilled in the art, such variations and modifications of the present invention It should be interpreted as being within the scope of protection.

10: handle body
11: receptacle 12: plate
121: central axis 122: circular hole
13 switch 14 cover
20: drive unit
21: drive motor 211: shaft
22: power supply
30: power transmission unit
31: rotor 32: drive shaft
33: relay means 331: drive gear
332: reduction gear 333: relay rod
40: head body
41: brush head 42: insertion portion
43: recess
50, 50A, 50B: Connection means
51: engaging portion 52: slit
53: corresponding coupling part
55 cover portion 56 annular coupling portion
57: annular corresponding coupling portion 58: cover slit
L1: first coating layer
L2: second coating layer

Claims (5)

A handle body including an inner accommodating part 11 and a plate 12 formed at one end of the accommodating part 11 and having a central axis 121 facing outward and an eccentric circular hole 122. 10);
A drive unit 20 including a drive motor 21 embedded in the other end of the accommodation unit 11 of the handle body 10 and a power supply unit 22 therefor;
The rotor 31 is inserted into the circular hole 122 of the plate 12 and rotated by receiving a driving force from the driving motor 21 of the drive unit 20, and is formed eccentrically to the rotor 31 A power transmission unit 30 including a drive shaft 32 facing outward;
A bristle 41 arranged at one end, an insertion part 42 arranged at the other end so that the central shaft 121 of the plate 12 is rotatably inserted, and a drive shaft 32 of the power transmission unit 30. The head body 40 includes a recess 43 that is inserted into the insertion unit 42 and is formed to be elongated in the center direction, and is swinged by the power transmission unit 30. ; And
Connecting means (50) for mutual coupling and separation of the handle body (10) and the head body (40);
Electric toothbrush comprising a.
The method of claim 1,
The connecting means (50, 50A)
Coupling portion 51 is formed in the handle body 10, the expansion portion formed in the end of the central axis 121 of the plate 12,
A slit 52 formed radially on the coupling part 51, and
Corresponding coupling portion 53 extended to the insertion portion 42 end of the head body 40
Consist of,
Electric toothbrush, characterized in that the engaging portion 51 is pressed while passing through the insertion portion 42 is released by the corresponding coupling portion 53 is caught.
The method of claim 1,
The connecting means (50, 50B)
A cover part 55 formed at one end of the handle body 10 and surrounding the outer circumferential surface of the other end of the head body 40;
Annular coupling portion 56 is formed along the inner peripheral surface of the cover portion 55,
An annular corresponding coupling portion 57 formed to correspond to the annular coupling portion 56 along an outer circumferential surface of the other end of the head body 40, and
Cover slit 58 formed radially on the cover portion 55
Consist of,
An electric toothbrush, wherein the annular coupling portion 56 pressurized while passing through the other end of the head body 40 is released from the annular corresponding coupling portion 57.
The method according to any one of claims 1 to 3,
Electric toothbrush, characterized in that the first coating layer (L1) for reducing friction is formed on the surface of the central axis (121), the insertion portion (42), or both.
The method according to any one of claims 1 to 3,
Electric toothbrush, characterized in that the friction reducing second coating layer (L2) is formed on the surface of the drive shaft (32), the recess (43), or both.

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