KR20070010928A - An electric-powered toothbrush - Google Patents

Abstract

An electric powered toothbrush is provided to brush interior surface as well as the exterior surface of teeth simultaneously by extending or closing up first and second brushes with rotation shafts and a fixing tool. In the electric powered toothbrush, a first brush(11) and a second brush(12) fixed on a first rotation shaft(13) and a second rotation shaft(14) rotate simultaneously. The first rotation shaft(13) and the second rotation shaft(14) are made of a flexible material. A wing member that is formed symmetrically from the fixing tool(18) and is made of a flexible material is fixed on the first and second rotation shafts(13,14). The fixing tool(18) is detachably fixed on the upper part of a housing(1). The upper part of the housing(1) is locked on an insertion recess of the fixing tool(18).

Description

Electric Toothbrush {An Electric-Powered Toothbrush}

1 is a perspective view showing an embodiment of a conventional electric toothbrush

Figure 2 is a perspective view showing another embodiment of the conventional electric toothbrush

Figure 3 is a perspective view of the electric toothbrush of the present invention

Figure 4 is a front view showing the electric toothbrush of the present invention in a partial cross section

5 is a cross-sectional view taken along the line A-A of FIG.

6 is a cross-sectional view taken along the line B-B of FIG.

7A and 7B are exploded perspective views showing the main parts of the present invention.

8 is a plan view for explaining the operating state of the present invention

Explanation of symbols for the main parts of the drawings

1: housing 1a: locking projection

11, 12: 1st, 2 bristles 13, 14: 1st, 2nd rotation shaft

15 through hole 16: drive shaft

18: fixture 18a: wing

18b: Insertion groove 18c: locking hole

The present invention relates to an electric toothbrush for automatically cleaning teeth, and more specifically, an electric toothbrush that can clean the plaque as well as food debris stuck inside and outside the tooth with a single brushing without damaging the gums. It is about.

In general, toothbrushes, which remove food debris and plaque between the gaps, to prevent tooth decay and tooth disease, provide many benefits in oral hygiene, and whiten teeth by removing contaminated coatings from the surface of teeth. To help.

Such a toothbrush is roughly classified into a manual type in which the user manually brushes and an electric type in which the bristles rotate according to the driving of the motor.

Manual toothbrushes, which are widely known in the art, are used to brush teeth as the user moves the bristles up, down, left, and right, so that there is a limit to cleaning teeth in a short time. The spread of electric toothbrushes, which can clean their teeth, is rapidly spreading.

1 is a perspective view showing an embodiment of a conventional electric toothbrush, a positive and reverse motor (not shown) driven by a battery is built in the housing 1 serving as a handle, and the positive and reverse motors are driven. At the end of the drive shaft (not shown) that rotates according to the head 3 provided with bristles 2 is rotatably installed.

Therefore, when the toothbrush is put on the brush head (2) and the brush head is applied to the tooth and the driving button (4) is operated, the head (3) with the brush head (2) is rotated so that the tooth can be effectively removed without brushing like a manual toothbrush. You can wipe it.

However, the electric toothbrush having such a structure could not brush teeth quickly because one tooth brushed the teeth, and the other end of the toothbrush had a free end, causing deformation such as bending, and when used in a deformation state such as bending. As the radius of rotation increases, a problem occurs that damages the gums.

In order to solve the above problems, a new type of electric toothbrush capable of brushing teeth using two bristles has been developed and registered as Utility Model No. 305,847.

2 is a perspective view showing another embodiment of the conventional electric toothbrush, the first drive shaft 5 and the second drive shaft 6 is rotated when the drive button 4 of the housing 1 is operated, the first bristle 7 And the second bristle 8 are configured to rotate at the same time.

A bearing plate 10 is integrally provided at the tip side of the support plate 9 fixedly provided at the tip side of the housing 1, and the bearing plate 10 is provided with a first drive shaft 5 and a second drive shaft. One end of 6 is supported in a rotatable state.

The first drive shaft 5 and the second drive shaft 6 are elastically bent together with the support plate while being supported by the support plate 9 located on the rear side thereof.

Therefore, when the first and second bristles 7 and 8 are toothpasted, the first and second bristles 7 and 8 are simultaneously rotated by operating the driving button 4 with the first and second bristles on the teeth. So you can clean your teeth faster.

However, the electric toothbrush having such a structure has an effect of brushing teeth faster than the conventional electric toothbrush which has brushed teeth by one head, but two brush heads can selectively clean only the outer side or the inner side of the tooth. There is a limit to maximize the brushing effect.

In addition, since the two first and second bristles are rotatably installed on the support plate, there is no great inconvenience in wiping the outer side of the tooth, but when wiping the inner side of the tooth, the mouth should be opened wide to prevent the gums from being caused by the bristles. Since it is a cumbersome problem that its use is not widely spread.

The present invention has been made in order to solve such a conventional problem, and the object is to improve the material of the rotating shaft for driving the bristles and the fixed form of the bristles to simultaneously clean the outer side as well as the inner side of the tooth. .

Another object of the present invention is to enable the same brushing as the type of brush recommended by the dental association in the process of simultaneously cleaning the inside and the outside of the tooth.

According to an aspect of the present invention for achieving the above object, in a powered toothbrush configured to simultaneously rotate the first and second bristles fixed to the rotating shaft as the motor is driven by a power source, the first first and second bristles are fixed The second and second rotation shafts are made of a flexible material, and the upper and lower first and second bristle shafts are fixed to the first and second rotation shafts, and are formed symmetrically from the fixing part. It is provided with an electric toothbrush, characterized in that the detachably fixed to the upper portion of the housing.

Hereinafter, the present invention will be described in more detail with reference to FIGS. 3 to 8 as an embodiment.

Figure 3 is a perspective view of the electric toothbrush of the present invention, Figure 4 is a front view showing a partial cross-sectional view of the electric toothbrush of the present invention, Figures 7a and 7b is a perspective view showing an exploded view of the main portion of the present invention, the present invention is a housing (1) Rechargeable battery (not shown) is built in the drive shaft 16 is rotated by pressing the drive button (4) provided on the outside of the housing and the first and second bristles 11 (11) The first and second rotary shafts 13 and 14 fixed with 12 are coupled to be disassembled and assembled through the through holes 15.

This is a rectangular insertion groove (not shown) is formed in the upper portion of the drive shaft 16 and the rectangular insertion portion 17 to be inserted into the insertion groove in the lower portion of the first and second rotation shafts 13 and 14 to rotate together. Are formed, respectively.

The first and second rotary shafts 13 and 14, which are detachably coupled to the drive shaft 16 and fixed to the first and second bristles 11 and 12, are flexible to be deformable in the process of brushing teeth. It is made of a flexible material, it is preferable to use a silicone (deformable) that can be deformed when the first and second rotation shafts (13) and (14) 14 rotate together when the drive shaft is rotated and brush teeth. Do.

In addition, the first and second bristles 11 and 12 are fixed to the first and second rotation shafts 13 and 14 on the lower side, and are formed symmetrically from the fixture 18 and made of a flexible material such as silicon. The wing piece 18a is fixed, and the fastener 18 is detachably fixed to the upper portion of the housing 1.

When the fastener 18 is detachably fixed to the housing 1, an insertion groove 18b is formed in the fastener 18 to lock the upper portion of the housing 1 by the locking means. When replacing the bristle (11) (12) it is possible to attach or detach the fixture 18 to the housing (1) without using a separate fixing member.

In the embodiment of the present invention as the locking means to form a locking hole (18c) and the insertion groove (18b) through the fixing groove (18) in the fastener 18, the locking hole (b) through the insertion groove (18b) in the upper portion of the housing (1) This is possible by forming the locking projection 1a that is caught by 18c.

Accordingly, the first and second rotary shafts 13 to which the first and second bristles 11 and 12 are fixed by simply removing the locking projections 1a formed in the housing 1 from the locking holes 18c formed in the fixture 18. Since the 14 are simultaneously removed, the first and second rotary shafts 13 and 14 to which the first and second bristles 11 and 12 are fixed from the housing can be replaced without disassembling the housing 1.

A ring-shaped ring 18d is formed at the end of the wing piece 18a formed in the fastener 18 so that the ring is fitted to the first and second rotation shafts 13 and 14 so that one end of the fastener 18 is closed. It is configured to be supported.

It is not necessary to limit the rotation direction of the first and second rotation shafts 13 and 14, but to rotate in the opposite direction rather than rotate in the same direction, but located on the left side in the drawing to push the food waste in the opposite direction to each other More preferably, the first bristle 11 is counterclockwise, and the second bristle 12 located on the right side is configured to rotate clockwise.

This is because when the first and second bristles 11 and 12 are in close contact with the inside and the outside of the teeth 19 at the same time, the first and second bristles 11 and 12 are positioned at the upper side so as to match with the brush recommended by the dental association. The teeth 19 are to be brushed from the top to the bottom, and the teeth located at the bottom is to be brushed from the bottom to the top.

Referring to the operation of the present invention configured as described above is as follows.

First, the first and second rotary shafts 13 and 14 are coupled to the drive shaft 16 through the through holes 15 and the insertion grooves 18b of the fasteners 18 are pushed into the upper portion of the housing 1 at the same time. Since the engaging projection 1a formed on the upper portion of (1) is caught by the engaging hole 18c of the fixture 18, the coupling thereof is completed.

That is, mounting of the 1st, 2nd bristle 11, 12 to the housing | casing 1 is completed.

In this state, the first and second brush heads 11 and 12 are applied with toothpaste to clean the teeth 19, and the driving buttons 4 exposed to the outside of the housing 1 are pressed and the two first and second rotation shafts 13 are removed. 14 rotate in opposite directions.

Accordingly, when the first and second bristles 11 and 12 face the teeth 19, the two first and second rotation shafts 13 and 14 are rotated in opposite directions, so that the teeth 19 and the gums 20 Food waste and plaque caught in the body are quickly removed.

However, as shown in FIG. 8, the first and second toothbrushes 11 and 12 do not touch the teeth at the same time so that the teeth 19 are sandwiched between the first and second bristles 11 and 12. When the hairs 11 and 12 are pushed between the teeth, the fixture 18 and the first and second rotary shafts 13 and 14 are made of a flexible material such as silicon, so that the wing piece 18a of the fixture 18 is provided. As shown in the dashed-dotted line of FIG. 8, the first and second rotary shafts 13 and 14 on which both ends of the wing pieces are fixed at the same time are deformed, so that the first and second bristles 11 and 12 are opened and the teeth ( 19) and gum 20 in close contact.

The first bristle 11 is rotated counterclockwise in a state in which the first and second bristles 11 and 12 are opened in close contact with the inside and the outside of the teeth 19 and the gum 20 by the above-described operation. When the second bristles 12 rotate clockwise, the first and second bristles 11 and 12 located inside and outside the teeth 19 and the gums 20 are the same as brushing recommended by the dental association. Since the tooth 19 and the gum 20 are wiped while rotating from the top to the bottom of the tooth 19, the outside of the tooth 19 as well as the inside of the tooth 19 are cleaned.

On the other hand, due to the long-term use of the bristles due to the bristles are severely open and the brushing effect is deteriorated and at the same time a wound on the gums during brushing, the bristles should be replaced from the housing (1).

In this case, when the locking projection 1a of the housing 1 is pulled out from the locking hole 18c of the fastener 18, and the puller 18 is pulled upward, the cross sections of the first and second rotation shafts 13 and 14 are The rectangular insertion part 17 is simply inserted in the upper part of the drive shaft 16, so that the bristles can be separated from the housing 1.

After replacing the bristles used in the operation as described above, as described above, the first and second rotary shafts, to which the new bristles are coupled, are coupled to the drive shaft 16 through the through holes 15, and at the same time, When the insertion groove of the fixture is pushed into the upper part, the locking protrusion 1a formed on the upper part of the housing 1 is caught by the locking hole of the fixture, thereby replacing the bristles.

As described above, since the first and second bristles of the present invention are opened or retracted by the flexible shaft and the fastener, the toothbrush can be wiped to the inner side as well as the outer side of the tooth at the same time. Brushing your teeth can be done quickly and cleanly, and your gums won't go bad.

In addition, since the bristle can be replaced from the outside of the housing without disassembling the housing, the bristle replacement operation is also facilitated.

Claims (3)

An electric toothbrush configured to simultaneously rotate first and second bristles fixed to a rotating shaft as a motor is driven by a power source, wherein the first and second rotary shafts to which the first and second bristles are fixed are made of a flexible material. 2, the upper and lower first and second rotation shafts of the bristles are fixed to be formed symmetrically from the fixing portion and to secure the wing piece made of a flexible material and at the same time detachably fixed to the upper portion of the housing Electric toothbrush. The method of claim 1, An electric toothbrush, characterized in that to form an insertion groove in the fixture so that the upper portion of the housing is locked by the locking means. The method of claim 2, The locking means is an electric toothbrush, characterized in that the locking hole formed so as to pass through the insertion groove in the fixture and the locking projection is formed on the upper portion of the housing to be caught in the locking hole through the insertion groove.

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