KR101056274B1 - Electric toothbrush - Google Patents

Abstract

The present invention relates to an electric toothbrush that can automatically clean teeth.

Applicant's prior application electric toothbrush is connected to the first and second rotary shafts 13 'and 14' through a through hole 15 'provided in the upper front of the housing 1', so in the process of use, saliva, toothpaste, food waste, There is a high possibility that other foreign matter may flow into the through hole 15 'and accumulate. Since the surrounding area of the through hole 15' is not easy to clean, there is a high possibility of bacteria propagation at the through hole 15 ', which is good for hygiene. The first and second toothbrushes 11 'and 12' which are not used to clean the teeth are also exposed so that the first and second toothbrushes 11 'and 12 which rotate at high speed in use are exposed. There was a problem that the outer part of ') touches the gums or the skin in the mouth, causing a lot of injuries.

A housing comprising a lower body, an intermediate body, and an upper body; An electric motor installed in an upper portion of the lower body of the housing; A charge battery installed in the lower part of the lower body of the housing and supplying power to the electric motor; A reduction gear installed in an upper portion of the lower body of the housing and coupled to a rotating shaft gear of the electric motor; A power transmission shaft having a lower end connected to the reduction gear and an upper end protruding to an upper end of the upper body via the intermediate body and the upper body of the housing; A first drive gear connected to the power transmission shaft at an upper end side of the upper body of the housing; A second drive gear connected to the power transmission shaft at the other end of the upper body of the housing; A first bristles detachably connected to the first drive gear; A second bristle head detachably connected to the second drive gear; A fastener detachably connected to an upper body of the housing and supporting the first and second bristles freely with rotation; A support bracket installed at one side of the lower body of the housing; According to the present invention characterized in that it is fixed to the support bracket, provided with a switch plate provided with a switch button protruding to the outside of the housing lower body, the through hole for connecting the first and second bristles to the housing is exposed. It is not possible to prevent the accumulation of foreign matters such as food waste inside the housing, and to facilitate the cleaning of each part including the first and second connection boxes, thereby making the electric toothbrush more hygienic. Both sides of the first and second bristles in the gum or mouth are provided with a blocking wall for blocking both sides of the first and second bristles which are not used to brush the teeth on both sides of the bristle receiver of the fixture. This prevents damage to the gums and the skin in the mouth and prevents contact with the skin. Since the charging socket is provided, it is possible to charge the rechargeable battery through the general mobile phone battery charger, thereby eliminating the need for a separate cradle and charger, thereby greatly reducing the cost.

Electric toothbrush, housing, 1st, 2nd bristle, gearbox, 1st, 2nd connection box, fixture, blocking wall, charging socket, protective cap

Description

Electric toothbrush {an electric powered toothbrush}

The present invention relates to an electric toothbrush for automatically cleaning teeth, and more particularly, a toothbrush having a pair of rotary brushes to clean foods as well as plaques caught inside and outside of teeth at once. It is about.

In general, toothbrushes, which remove food debris and plaque between teeth, can prevent tooth decay and tooth disease, and offer a number of benefits in oral hygiene and whiten teeth by removing contaminated coatings from the surface of teeth. Help

The 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 hold toothbrushes and put the bristles into the mouth to move them up, down, left and right. To modern people, the spread of electric toothbrushes that can quickly clean teeth is a trend that is spreading.

In the related art, the electric toothbrush is mostly brushed by one head, so that it is impossible to quickly brush teeth, and the other end is formed of a free end, which causes deformation, such as bending, and rotation of the bristles when used in a deformation state such as bending. As the radius 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.

The conventional pre-registered electric toothbrush has the effect of brushing teeth faster than the conventional electric toothbrush that brushed teeth by one head, but the two brush heads can selectively wipe only the outer or inner side of the tooth There is a limit to maximizing the brushing effect.

In addition, the two first and second bristles are rotatably installed on the support plate, so there is no great inconvenience in cleaning the outer surface of the tooth, but when cleaning the inner side of the tooth, the mouth should be opened wide to prevent the gums from being damaged by the bristles. Therefore, there is a troublesome use of the situation is not widely spread.

Accordingly, the present applicant is the first and second in the electric toothbrush configured to simultaneously rotate the first and second bristles (11 ', 12') fixed to the rotating shaft as the motor is driven by the power source as shown in Figs. The first and second rotary shafts 13 'and 14' to which the bristles 11 'and 12' are fixed are made of a flexible material, and the first and second bristles 11 'and 12' are fixed. The first and second rotary shafts 13 'and 14' of the upper and lower parts are symmetrically formed from the fastener 18 'and fix the wing piece 18a' made of a flexible material and at the same time, the fastener 18 ' ) Has been proposed an electric toothbrush which is detachably fixed to the upper part of the housing (1 '). (Patent No. 10-0683814)

The applicant's first application electric toothbrush is the first and second bristles (11 ', 12') to be opened or retracted by each other by the rotary shaft (13 ') 14' and the fixture (18 ') of a flexible material. At the same time, the outer surface of the tooth as well as the inner surface can be cleaned, so that the brushing can be performed in a clean state in a faster time, and the gums will not be damaged, and the housing 1 'can be removed without disassembling the housing 1'. Since the first and second bristles 11 ′ and 12 ′ can be replaced at the outside of the), the replacement work of the first and second bristles 11 ′ and 12 ′ is facilitated.

However, since the first and second rotary shafts 13 ′ and 14 ′ are connected to each other through the through hole 15 ′ provided in the upper portion of the housing 1 ′, the toothbrush, toothpaste, food waste, and the like. There is a high possibility that foreign matter flows into the through hole 15 'and accumulates, and since the surrounding area of the through hole 15' is not easy to clean, there is a high risk of bacteria propagation at the through hole 15 ', so it is not hygienic. There was a problem.

In addition, in the above-mentioned electric toothbrush, the teeth of the first and second bristles 11 'and 12' are mainly used to clean the teeth with the front portions of the first and second bristles 11 'and 12'. Since the outer part is also exposed, there is a problem that the outer part of the first and second toothbrushes 11 'and 12' that rotates at high speed in contact with the gum or the skin in the mouth may cause injury.

In FIG. 1 and FIG. 2, reference numeral 1a 'denotes a locking protrusion and 18c' denotes a locking hole.

On the other hand, the conventional electric toothbrush, including the prior application electric toothbrush is provided with a rechargeable battery for supplying power to the electric motor inside the housing, in order to charge the rechargeable battery must use a separate dedicated cradle and charger to charge This was not only uncomfortable, but also caused a cost increase.

The present invention has been made in view of the deficiency of the conventional structure, and the first object is to use more hygienic to prevent the accumulation of foreign substances such as saliva, toothpaste, food waste, etc. in the first and second rotation shaft coupling site. Is to provide a powered toothbrush.

It is a second object of the present invention to provide a powered toothbrush that does not damage the gums or the skin in the mouth by the outer portions of the first and second bristles that are not used to clean the teeth.

It is a third object of the present invention to provide an electric toothbrush that can easily charge a rechargeable battery installed inside a housing without a separate cradle and a charger, and can also be stored upright.

The electric toothbrush of the present invention for achieving the above object comprises a housing consisting of a lower body, an intermediate body, and an upper body; An electric motor installed in an upper portion of the lower body of the housing; A charge battery installed in the lower part of the lower body of the housing and supplying power to the electric motor; A reduction gear installed in an upper portion of the lower body of the housing and coupled to a rotating shaft gear of the electric motor; A power transmission shaft having a lower end connected to the reduction gear and an upper end protruding to an upper end of the upper body via the intermediate body and the upper body of the housing; A first drive gear connected to the power transmission shaft at an upper end side of the upper body of the housing; A second drive gear connected to the power transmission shaft at the other end of the upper body of the housing; A first bristles detachably connected to the first drive gear; A second bristle head detachably connected to the second drive gear; A fastener detachably connected to an upper body of the housing and supporting the first and second bristles freely with rotation; A support bracket installed at one side of the lower body of the housing; The switch plate is fixed to the support bracket and provided with a switch button protruding to the outside of the housing lower body.

In the electric toothbrush of the present invention, a fixture connecting piece is provided at the rear upper portion of the housing upper body, and the lower support body of the gearbox made of the lower support body and the upper cover body is integrally provided at the upper end of the housing upper body; A power transmission gear connected to the upper end of the power transmission shaft is installed at the center of the inner lower end of the gear box, and a first drive gear and a second drive gear connected to the power transmission gear are installed at one side and the other bottom of the gear box; A power transmission gear connected to the upper end of the power transmission shaft is installed at the center of the inner lower end of the gear box, and a first drive gear and a second drive gear connected to the power transmission gear are installed at one side and the other bottom of the gear box; The power transmission gear and the first drive gear are composed of an upper gear part and an upper gear part, and the lower gear part is connected to the power transmission gear, and the upper gear part is connected through a first connecting gear connected to the first drive gear through the gear belt. The power transmission gear and the second drive gear are connected through a second connection gear connected to the power transmission gear and the second drive gear; A first connection box and a second connection box each having a lower connection body and an upper cover body are installed in front of the upper one side and the upper other side of the gear box, and drive gear shaft connecting holes are formed at the lower rear of each lower box of the connection box. Become; The first connection pipe and the second connection pipe are provided on one side and the other side of the upper end of the gear box upper cover body, and the drive gear shaft connection hole of the lower contact body of the first connection box is inserted into the first connection pipe and the second A drive gear shaft connecting hole of the lower contact of the connection box is inserted into the second connecting pipe; A drive pulley is installed at an inner rear of each connection box, and a driven pulley connected to the drive pulley and a belt is installed at an inside front of each connection box; The drive pulley embedded in the first coupling box is connected to the first drive gear shaft entering the first coupling box through the first connection pipe of the gear box and the drive gear shaft connection hole of the first coupling box and embedded in the second coupling box. The driven pulley is connected to the second drive gear shaft entering the second coupling box through the second connecting pipe of the gear box and the drive gear shaft connecting hole of the second coupling box; A bristles connecting hole is provided in the upper front of the upper cover of each junction box, the first bristle shaft entering the interior of the first junction box through the bristle connection hole of the first junction box to the driven pulley embedded in the first junction box A second bristle shaft which enters into the second coupling box through the bristle connection hole of the second coupling box is connected to the driven pulley embedded in the second coupling box at the same time.

In the electric toothbrush of the present invention, the fastener supporting the rotation of the first and second bristles is provided with a fitting portion to which the fastener connecting piece of the housing upper body is detachably connected to the rear, and the bristle receiving portion is provided at the front, and the bristles are accommodated. Blocks are provided on both sides of the section to block both sides of the first and second bristles that are not used to brush the teeth.

And a charging socket to which the standard charging jack is coupled to the lower end of the support bracket installed inside the housing lower body is installed, inserting a charging jack to insert a standard charging jack in the bottom center of the housing lower body to be coupled to the charging socket A hole is provided, and a protective cap is detachably attached to the lower end of the housing lower body to protect the charging jack insertion hole and the charging socket of the housing lower body.

The electric toothbrush of the present invention can be easily stored on the wall surface which can be fixed to the adsorption plate, including the glass wall surface, through the hook hole rotatably connected to the hook ring which can insert the housing lower body into one side of the adsorption plate.

According to the present invention, the through hole for connecting the first and second bristles to the housing is not exposed, thereby preventing foreign matters such as food waste from accumulating inside the housing, and preventing the accumulation of foreign substances such as the first and second bristles. Since the cleaning can be facilitated, the electric toothbrush can be used more hygienically.

In addition, both sides of the first and second bristles of the first and second bristles are provided on both sides of the gum or mouth in the process of use. It will not come in contact with your skin, preventing damage to your gums or the skin in your mouth.

In addition, since the electric toothbrush of the present invention is provided with a standard charging socket used for charging a general mobile phone battery, it is possible to charge a rechargeable battery through a general mobile phone battery charger, thereby eliminating the need for a separate cradle and charger, thereby greatly reducing the cost. You can do it.

Hereinafter, the specific technical details of the present invention will be described in more detail with reference to the accompanying drawings.

3 shows a front view of an embodiment of the invention, FIG. 4 shows a main side view of the embodiment, and FIG. 5 shows a top view of the embodiment.

6 is an exploded perspective view of the embodiment, Figure 7 is an exploded perspective view of the upper portion of the housing of the embodiment, Figure 8 is a plan view showing the main portion showing the power transmission state of the power transmission shaft of the embodiment. have.

And Fig. 9 shows a main part side view of the storage state of the embodiment.

3 to 8, the electric toothbrush of the present invention comprises a housing (10) consisting of a lower body (11), an intermediate body (12), and an upper body (13); An electric motor 20 installed on an upper portion of the lower body 11 of the housing 10; A charge battery 30 installed in the lower part 11 of the housing 10 and supplying power to the electric motor 20; A reduction gear 40 which is installed on an upper portion of the lower body 12 of the housing 10 and is coupled to the rotary shaft gear 21 of the electric motor 20; A power transmission shaft 50 having a lower end connected to the reduction gear 40 and an upper end protruding to the upper end of the upper body 12 via the intermediate body 12 and the upper body 13 of the housing 10. and; A first drive gear 61 connected to the power transmission shaft 50 at an upper end side of the upper body 13 of the housing 10; A second drive gear 62 connected to the power transmission shaft 50 at the other end of the upper body 13 of the housing 10; A first bristle (71) detachably connected to the first drive gear (61); A second bristles 72 detachably connected to the second drive gear 62; A fastener 80 is detachably connected to the upper body 13 of the housing 10 and supports the first and second bristles 71 and 72 in a freely rotatable manner.

In addition, the electric toothbrush of the present invention and the support bracket 90 is installed in the front of the lower body 11 of the housing 10; A switch plate 100 fixed to the support bracket 90 and provided with a switch button 101 protruding outward of the housing lower body 11;

In the electric toothbrush of the present invention, the housing upper body 13 is provided with a fixture connecting piece 14 at the rear upper portion, and the gear box 110 of the lower support body 111 and the upper cover body 112 at the upper end. The lower support body 111 is provided integrally.

A power transmission gear 51 connected to the upper end of the power transmission shaft 50 is installed at the center of the lower end of the gear box 110, and the power transmission gear 51 is disposed at one side and the other side of the lower end of the gear box 110. And a first drive gear 61 and a second drive gear 62 connected to each other.

The power transmission gear 51 and the first drive gear 61 are composed of an upper gear portion 121a and an upper gear portion 121b, and the lower gear portion 121a is connected to the power transmission gear 51 and at the same time. The gear part 121b is connected via the first connecting gear 121 connected to the first drive gear 61 through the gear belt 130, and the power transmission gear 51 and the second drive gear 62 are It is connected via the second connection gear 122 connected to the power transmission gear 51 and the second drive gear 62.

The first connection box 150 and the second connection box 160 are installed at one front and the other front of the gear box 110.

The first connector box 150 and the second connector box 160 are formed of lower connectors 151 and 161 and upper lids 152 and 162, respectively, and each lower connector 151 and 161. Drive gear shaft connecting holes 153 and 163 are formed at the rear of the lower end.

The first connection tube 113 and the second connection tube 114 are provided on one side and the other side of the upper end of the upper case 112 of the gear box, the drive of the lower contact 151 of the first connection box 150 The gear shaft connecting hole 153 is inserted into and coupled to the first connecting tube 113, and the drive gear shaft connecting hole 163 of the lower contact 161 of the second connecting box 160 is connected to the second connecting tube. Inserted into 114 is coupled.

Drive pulleys 154 and 164 are installed in the rear of each of the junction boxes 150 and 160, and the drive pulleys 154 and 164 and the belt in the inner front of each of the junction boxes 150 and 160. Follower pulleys 156 and 166 connected to 155 and 165 are provided.

The driving pulley 154 embedded in the first coupling box 150 is formed through the first connecting pipe 113 of the gear box 110 and the driving gear shaft connecting hole 153 of the first coupling box 150. The drive pulley 164 connected to the first drive gear shaft 61a entering the first coupling box 150 and embedded in the second coupling box 160 is the second connection pipe 114 of the gear box 110. ) And the second drive gear shaft 62a entering the second coupling box 160 through the driving gear shaft connecting hole 163 of the second coupling box 160.

The bristles connecting holes 157 and 167 are provided in front of upper ends of the upper lids 152 and 162 of the connection boxes 150 and 160.

The first toothbrush shaft which enters into the first connection box 150 through the bristle connection hole 157 of the first connection box 150 in the driven pulley 156 embedded in the first connection box 150 ( 71a) is connected, and the driven pulley 166 embedded in the second connector box 160 enters the second connector box 160 through the bristle connection hole 167 of the second connector box 160. The second toothbrush hair shaft 72a is connected.

Reference numeral 22 in the drawing denotes a connecting gear.

When the electric motor 20 is operated in the electric toothbrush of the present invention, the reduction gear 40 connected to the rotary shaft gear 21 of the electric motor 20 through the connecting gear 22 is rotated in one direction, The power transmission shaft 50 and the power transmission gear 51 which are connected to the reduction gear 40 rotate, and the first drive gear 61 and the second drive gear 62 connected to the power transmission gear 51. Are rotated in opposite directions and the first bristle 71 connected to the first drive gear 61 and the second bristle 72 connected to the second drive gear 62 rotate in opposite directions. .

In the electric toothbrush of the present invention, the fastener 80 for supporting the rotation of the first and second bristles 71 and 72 is fitted in such a manner that the fastener connecting piece 14 of the housing upper body 13 is detachably connected to the rear. Both sides of the first and second bristles 71 and 72 are provided with a portion 81 and a bristle receiving portion 82 in front, which is not used to brush teeth on both sides of the bristle receiving portion 82. A blocking wall 83 is provided to block the site.

In the electric toothbrush of the present invention, at the lower end of the support bracket 90 installed inside the housing lower body 11, a charging socket 140 to which a standard charging jack is coupled is installed, and the center of the lower end of the housing lower body 11 is provided. It is provided with a charging jack insertion hole 15 to insert a standard charging jack to be coupled to the charging socket 140.

In the electric toothbrush of the present invention, the charging socket 140 preferably uses a standard charging jack for charging a mobile phone battery, and the positions of the charging socket 140 and the charging jack insertion hole 15 are predicted. Of course, it can be changed to another position as possible.

In the illustrated embodiment, the protective cap 16 is detachably installed at the lower end of the housing lower body 11 to protect the charging jack insertion hole 15 and the charging socket 140 of the housing lower body 11. Has one form.

The electric toothbrush of the present invention is a glass wall surface through the hook 170 is rotatably connected to the hook ring 172 that can be inserted into the housing lower body 11 to one side of the suction plate 171 as shown in FIG. In addition, the adsorption plate 171 can be stored on a wall that can be fixed easily.

10 shows a driving circuit diagram of an embodiment of the present invention.

In the electric toothbrush of the present invention, as shown in Figure 3, the multi-color operation indicator lamp 102 is installed on the upper switch button 101 of the front of the housing lower body 11, the multi-color operation indicator lamp 102 is shown in FIG. Likewise, it is connected to the controller 104 of the driving circuit together with the operation switch 103, the electric motor 20, and the charging battery 30 operated through the switch button 101.

In the electric toothbrush of the present invention, when the operation switch 103 operated through the switch button 101 is touched once, the multi-color operation indicator lamp 102 lights up and the electric motor 20 rotates at a high speed (for example, 7500 rpm). When the operation switch 103 is touched once more, the electric motor 20 operates at a low speed (for example, 4500 rpm), and when touched once more, the multi-color operation indicator 103 turns off. The electric motor 20 is stopped.

In the electric toothbrush of the present invention, the multi-color operation indicator lamp 102 which is turned on through the operation switch 103 causes a color change according to the remaining amount of the rechargeable battery 30, for example, the remaining amount of the rechargeable battery 30. If it is less than 3V, it operates red blinking, 3 ~ 3.3V lights up red, 3.3 ~ 3.8V lights up orange, and above 3.8V works up green light.

In the electric toothbrush of the present invention configured as described above, the first and second toothbrush shafts assemble the fastener 80 on which the first and second bristles 71 and 72 are rotatably supported on the housing upper body 13. 71a) and 72a are connected to the first and second driven pulleys 156 and 166 through bristle connection holes 157 and 167 of the first and second connection boxes 150 and 160, respectively. When the switch button 101 of the switch plate 100 is pressed through the pressing part of 11), the electric motor 20 is operated so that the first and second bristles 71 and 72 rotate in opposite directions. When the first and second bristles 71 and 72 are inserted into the mouth together with the fastener 80, the front part of the first and second bristles 71 and 72 that rotates can be cleaned.

In the electric toothbrush of the present invention, the first connecting box 150 and the second connecting box 160 are installed on the upper portion of the gear box 110 provided in the upper body 13 of the housing 10, and the first, Since the first and second bristles 71 and 72 are connected through the bristle connection holes 157 and 167 of the second coupling box 150 and 160, the first and second bristles 71 and the bristle (71) ( 72 is not exposed to the through-holes to prevent foreign matters such as food debris to accumulate in the housing 10, it is possible to prevent the accumulation of each portion, including the first and second connection boxes 150, 160 Since the cleaning can be facilitated, the electric toothbrush can be used more hygienically.

In addition, in the electric toothbrush of the present invention, both sides of the bristle receiving portion 82 of the fastener 80 can be blocked to block both sides of the first and second bristles 71 and 72 which are not used to brush the teeth. Since the wall 83 is provided, both sides of the first and second bristles 71 and 72 do not touch the gum or the skin in the mouth, thereby preventing damage to the gum or the skin in the mouth.

In addition, since the electric toothbrush of the present invention is provided with a standard charging socket 140 used for charging a mobile phone battery, it is possible to charge the rechargeable battery 30 through a general mobile phone battery charger, thereby eliminating the need for a separate cradle and charger. do.

In addition, when the hook ring 172 is rotatably connected to one side of the suction plate 171, the hook ring 170 may be hooked to a wall surface where the suction plate 171 may be fixed, including a glass wall. By inserting the housing lower body 11 into the ring 172, the electric toothbrush can be easily stored upright, and the storage angle can be freely adjusted.

 The present invention described above is not limited to the above-described embodiments and drawings, and various permutations, modifications, and changes can be made without departing from the technical spirit of the present invention. It will be apparent to those who have

1 is a perspective view of the applicant's previous application electric toothbrush

Figure 2 is an exploded perspective view of the main portion of the same toothed electric toothbrush

3 is a front view of one embodiment of the present invention;

4 is a side view of main parts of the embodiment;

5 is a plan view of the embodiment.

6 is an exploded perspective view of the embodiment;

7 is an exploded perspective view of a housing upper portion of the embodiment;

8 is a plan view of the main parts showing the power transmission state of the power transmission shaft of the embodiment;

9 is a side view showing main parts of a storage state of the embodiment;

10 is a drive circuit diagram of the embodiment;

<Explanation of Signs of Major Parts of Drawings>

10 housing 11 lower body

12: intermediate 13: upper body

14: Fixture Connection Part 15: Charging Jack Insertion Hole

16: protective cap 20: electric motor

21: rotating shaft gear 30: rechargeable battery

40: reduction gear 50: power transmission shaft

51: power transmission gear 61: first drive gear

62: second drive gear 71: first brush head

72: second brush head 80: fastener

81: fitting portion 82: brush head receiving portion

83: barrier wall 90: support bracket

100: switch plate 101: switch button

102: multi-color operation indicator 103: operation switch

110: gear box 113: first connector

114: second connecting pipe 121: first connecting gear

122: second connecting gear 130: gear belt

140: charging socket 150: first connection box

160: the second connection box 170: hook

171: suction plate 172: hook ring

Claims (9)

A housing comprising a lower body, an intermediate body, and an upper body; An electric motor installed in an upper portion of the lower body of the housing; A charge battery installed in the lower part of the lower body of the housing and supplying power to the electric motor; A reduction gear installed in an upper portion of the lower body of the housing and coupled to a rotating shaft gear of the electric motor; A power transmission shaft having a lower end connected to the reduction gear and an upper end protruding to an upper end of the upper body via the intermediate body and the upper body of the housing; A first drive gear connected to the power transmission shaft at an upper end side of the upper body of the housing; A second drive gear connected to the power transmission shaft at the other end of the upper body of the housing; A first bristles detachably connected to the first drive gear; A second bristle head detachably connected to the second drive gear; A fastener detachably connected to an upper body of the housing and supporting the first and second bristles freely with rotation; A support bracket installed at one side of the lower body of the housing; The toothbrush is fixed to the support bracket, characterized in that it comprises a switch plate provided with a switch button protruding to the outside of the housing lower body. According to claim 1, The fastener connecting piece is provided on the upper rear portion of the housing upper body, the lower support body of the gear box consisting of the lower support body and the upper cover body is provided integrally on the upper end of the housing upper body; A power transmission gear connected to the upper end of the power transmission shaft is installed at the center of the inner lower end of the gear box, and a first drive gear and a second drive gear connected to the power transmission gear are installed at one side and the other bottom of the gear box; A power transmission gear connected to the upper end of the power transmission shaft is installed at the center of the inner lower end of the gear box, and a first drive gear and a second drive gear connected to the power transmission gear are installed at one side and the other bottom of the gear box; The power transmission gear and the first drive gear are composed of an upper gear part and an upper gear part, and the lower gear part is connected to the power transmission gear, and the upper gear part is connected through a first connecting gear connected to the first drive gear through the gear belt. The power transmission gear and the second drive gear are connected through a second connection gear connected to the power transmission gear and the second drive gear; A first connection box and a second connection box each having a lower connection body and an upper cover body are installed in front of the upper one side and the upper other side of the gear box, and drive gear shaft connecting holes are formed at the lower rear of each lower box of the connection box. Become; The first connection pipe and the second connection pipe are provided on one side and the other side of the upper end of the gear box upper cover body, and the drive gear shaft connection hole of the lower contact body of the first connection box is inserted into the first connection pipe and the second A drive gear shaft connecting hole of the lower contact of the connection box is inserted into the second connecting pipe; A drive pulley is installed at an inner rear of each connection box, and a driven pulley connected to the drive pulley and a belt is installed at an inside front of each connection box; The drive pulley embedded in the first coupling box is connected to the first drive gear shaft entering the first coupling box through the first connection pipe of the gear box and the drive gear shaft connection hole of the first coupling box and embedded in the second coupling box. The driven pulley is connected to the second drive pipe shaft entering the second coupling box through the second connecting pipe of the gear box and the driving gear shaft connecting hole of the second connecting box; A bristles connecting hole is provided in the upper front of the upper cover of each junction box, the first bristle shaft entering the interior of the first junction box through the bristle connection hole of the first junction box to the driven pulley embedded in the first junction box And a second toothbrush shaft which enters into the second coupling box via a bristle connection hole of the second coupling box to a driven pulley embedded in the second coupling box at the same time. According to claim 1 or 2, The fastener for supporting the rotation of the first and second bristles is provided with a fitting portion to be detachably connected to the fastener connecting piece of the housing upper body in the rear, the bristle receiving portion is provided in the front, An electric toothbrush, characterized in that barriers are provided on both sides of the bristle receiver to block both sides of the first and second bristles that are not used to brush the teeth. The charging socket according to claim 1 or 2, wherein a standard charging jack is coupled to a lower end of a support bracket installed inside the housing lower body, and a standard charging jack is inserted into a lower center of the housing lower body. Electric toothbrush, characterized in that the charging jack insertion hole is provided to be coupled to. 5. The powered toothbrush of claim 4, wherein a protective cap is detachably installed at a lower end of the housing lower body to protect the charging jack insertion hole and the charging socket of the housing lower body. The method of claim 4, characterized in that the hook ring for inserting and coupling the housing lower body to one side of the suction plate can be easily stood on the wall surface which can be fixed to the suction plate including the glass wall through a hook hole rotatably connected. Electric toothbrush. 5. The controller of claim 4, wherein a multi-color operation indicator lamp is installed above the switch button on the front surface of the housing lower body, and the multi-color operation indicator lamp is operated via a switch button. Electric toothbrush, characterized in that connected to. 10. The method of claim 7, wherein once the operation switch operated by the switch button is touched, the multi-color operation indicator lamp is turned on to operate the electric motor at high speed, and when the operation switch is touched once more, the electric motor is operated at low speed. When touched once more, the electric toothbrush characterized in that the electric motor is stopped while the multi-color operation indicator lamp goes out. The electric toothbrush of claim 8, wherein the multi-color operation indicator lamp lit through the operation switch causes a color change according to the remaining amount of the rechargeable battery.

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