KR101351695B1 - Electric Toothbrush - Google Patents

Abstract

The present invention is provided with a first receiving portion having an upper surface, a head portion case provided with a second receiving portion, left and right operating mechanisms and upper and lower operating mechanisms which are mounted on the first receiving portion of the head portion case and the bristles are planted on the upper surface. A head part comprising an operation bar which is integrally connected to the toothbrush part and the upper and lower operating parts of the toothbrush part and seated on the second accommodating part, and covers the open first and second accommodating parts of the head part case, but is seated on the first accommodating part. A cap part covering an edge of the first accommodating part side and an open upper surface of the second accommodating part side such that the bristles of the toothbrush part are exposed to the outside, a driving part connected to the operation bar to move the toothbrush part up, down, left and right, and the A power supply unit provided at one side of the driving unit to apply power to the driving unit, and a body part case which covers the outer side of the driving unit and the power supply unit and is coupled to the head unit case; To provide a powered toothbrush according to claim.
According to the electric toothbrush of the present invention, by assembling the upper surface of the head portion case, and covering the open upper surface with a cap portion, the assembly of the head portion is very easy, thereby reducing the assembly time. In addition, the upper and lower operation port and the operation bar integrally provided with the operation of the up and down operation mechanism is made, and the up, down, left, right movement of the toothbrush portion is made stable. In addition, due to the simple structure of the drive unit is easy to manufacture and assembly, the number of parts can be reduced can reduce the manufacturing cost.

Description

Electric Toothbrush

The present invention relates to an electric toothbrush, and more specifically, to install a plurality of bristles provided in the electric toothbrush in a plurality, the equally divided bristles are operated at the same time, up, down, left, right to completely remove the foreign matter stuck to the teeth. It relates to a powered toothbrush that can be removed.

In general, a toothbrush or electric toothbrush is one of the toiletries to protect the teeth, gums and the like from harmful bacteria and massage the gums to promote gum health.

Conventional toothbrushes are divided into the chimney part and the handle part of the brushed hair. In the case of a general toothbrush, the user grips the handle part and rubs it with the teeth by moving back and forth, vertically or circularly to teeth and gums to suppress the occurrence of harmful bacteria and foreign bodies. Removal and gum training effect, but the existing toothbrush is not very difficult to move forward and backward, but up, down and circular movements, such as the wrong brushing habits are not easily adapted to the user who is in the body, Even if you're a skilled person, the up and down movements and circular movements of the toothbrush are quite cumbersome, so most of the brushing is often done by the front and rear movement of the toothbrush. Due to this, foreign substances are not effectively removed, and there is a lung disease that causes oral hygiene due to wrong habits such as inflammation of the gums and the like.

In recent years, the electric toothbrushes used in recent years are simple vibration type or circular motion electric toothbrushes, and when brushing teeth with such electric toothbrushes, the user's physical consumption is low, but foreign matter removal and gum training effects have been extremely insignificant.

Therefore, the present applicant to operate the bristles provided in the automatic toothbrush up, down, left, right at the same time in order to solve the above problems, so that the user does not have to move up, down, left, right brush bristle automatically Has presented an automatic toothbrush that can completely remove the various foreign substances sandwiched between the upper side and the groove of the lower, left, right movement.

In the toothbrush bristle operation method and apparatus of the automatic toothbrush proposed in Korean Patent Application No. 10-2004-0052747 filed by the present applicant, the bristle is composed of left and right operating portions, and upper and lower operating portions, The operating part is operated left and right by the driving part, and the upper and lower operating parts are interlocked by the driving of the left and right operating parts so that the upper and lower operations are performed. The drive unit includes a motor, a cam plate that is rotated by driving the motor, an operating tool that is eccentrically connected to the upper side of the cam plate, and a pusher that connects the operating tool to the left and right operating parts.

However, the above invention has a complicated structure, which makes production difficult, and thus, manufacturing costs are high, and since the method of operating the bristles is a method using a cam plate and a link, operation is uncertain and noise is severe.

In addition, the Korean Patent Application No. 10-2007-0107565 filed by the present applicant "an automatic brush brush bristle operation device" is an improved development of the line invention, the bristle bristle by installing a rotary actuator at the end of the left and right operation of the bristle By operating the left and right at the same time to rotate, the bristle operation more smoothly, reducing the number of parts to reduce the manufacturing cost and cost.

However, in the above-described invention, the assembly between the left and right operation parts and the rotary operation part is difficult, and when inadvertently assembled, the guide rail installed in the rotary operation part is damaged, resulting in a toothbrush defect, and reducing productivity. There was a problem floating down.

 In addition, Korean Patent Application No. 10-2007-0107565 filed by the present applicant "brush bristle operating device of the automatic toothbrush" in order to solve the problems of the invention of the left, right and the right and left operating port is provided, and left, right operation The copper ball and the upper and lower operation holes are fixed to the head case by the pin coupling method, and the operation bar connecting the driving part and the left and right operation holes is fixed to the locking jaws of the left and right operation holes to minimize the defective rate during assembly. .

More specifically, as shown in FIGS. 1 and 2, a fastening hole is formed at both sides of the side surface, and a head case in which a cylindrical neck case is integrally connected to one end, and inserted before and after the inside of the head case. The inclined portion is formed on the surface in contact with the upper and lower operation openings, and a pair of left and right operating openings are formed on both sides and the locking jaw is formed at one end, and the upper and lower operation ports are inserted into the upper and lower sides of the head case. The inclined part corresponding to the inclined part is formed, and consists of a pair of upper and lower operating holes having through holes formed on both sides of the upper and lower ends, and the left and right operating holes and the upper and lower operating holes are the fastening holes of the head case and the left and right operating holes. The fixing is made by the fixing pin inserted into the through hole of the long hole and the upper and lower operating holes. Then, the operation bar is coupled to the locking jaw of the left and right operation tool, the operation bar is connected to the drive unit provided inside the body. At this time, one end of the operation bar is formed with a locking groove that is fixed to the locking jaw of the left, right operating tool, the locking groove of the operating bar is fixed to the locking jaw of the left, right operating port is connected.

However, in order to connect the locking groove of the operating bar to the locking jaws of the left and right operating holes, the locking groove of the operating bar must be fixed to the locking jaws of the left and right operating holes while the operating bar is inserted into the cylindrical neck case. It was very difficult to assemble the operation bar and the left and right operation tools. In addition, the locking jaw is separated from the locking groove by the repeated movement of the left and right operating tools, and the left and right operating tools and the operating bar are separated. In addition, the configuration of the drive unit is complicated, making it difficult to manufacture, thereby causing a problem that the manufacturing cost is increased.

SUMMARY OF THE INVENTION The present invention has been made to solve the conventional problems,

An object of the present invention is to open the upper surface of the head portion case, cover the open upper surface with a cap portion to facilitate the assembly of the head portion mounted therein, as well as to integrate the left and right operating port and the operating bar of the head unit integrally And to provide an electric toothbrush that can improve the stability of the operation.

In addition, another object of the present invention is to provide an electric toothbrush that can improve the quality of the product by improving the driving unit to a simple structure to facilitate the manufacture and assembly, and to achieve a stable and accurate operation of the driving unit.

The electric toothbrush of the present invention provided to achieve the above object includes a head part case having a first accommodating part and a second accommodating part of which an upper surface is opened; The left and right operating port and the upper and lower operating port which is mounted on the first receiving part of the head part case and the bristles are planted on the upper surface, the upper and lower operating holes are provided in pairs to face each other on the left and right sides of the first receiving part. A head portion comprising a toothbrush portion inserted into the bogie, and a pair of operation bars connected to the two upper and lower operation openings of the toothbrush portion respectively and seated on the second receiving portion; A cap part covering an upper edge of the first accommodating part and an open upper part of the second accommodating part so that bristles of the toothbrush part are exposed to the outside; A pair of actuating rods integrally connected to the two actuating bars of the head portion, and a guide groove for inserting one end of the pair of actuating rods, respectively, are formed in a zigzag shape along the circumferential direction on the outer surface thereof. And a motor coupled to a transmission shaft and a rotation shaft of the power transmission body to transmit a rotational force according to power supply to the power transmission body, and one end of the pair of operating rods is guided to the guide groove when the power transmission rotates. A driving unit for moving the pair of operating rods in an up and down direction as the mold moves; A power supply unit provided at one side of the driving unit to apply power to the driving unit; Covering the outer side of the drive unit and the power supply unit includes a body case coupled to the head case case, the upper and lower operating port of the toothbrush portion is driven in conjunction with the operation rod of the drive unit in the up and down direction of the power of the operation bar It moves up and down through, the left and right operating mechanism of the toothbrush portion is characterized in that the movement in the left, right direction in conjunction with the up, down movement of the up and down operating port.

Here, hook grooves are formed on the upper surface of the head part case at a predetermined interval, and hooks are provided on the surface of the head part case at regular intervals in contact with the upper surface of the head part case so that the hook of the cap part is connected to the hook groove of the head part case. It is characterized in that the forced coupling.

In addition, the pair of upper and lower operating holes of the toothbrush portion are formed on both sides of the inclined surface with respect to the center of the surface facing each other and at the same time a long hole is formed on the side, the left and right operating holes are provided as a pair of upper, The inclined surface corresponding to the inclined surface of the upper and lower operating mechanism is formed and a through hole is formed in the side surface, and the left and right operating port and the up and down operating port are fastening holes formed on the side wall of the head part case and the long and left and right operating holes of the upper and lower operating holes. It is characterized by being fixed by a fixing pin inserted into the through hole.

In addition, the pair of upper and lower operation tools of the toothbrush portion each have one end portion facing each other to form an inclined surface, a gear portion is formed at a lower end of the inclined surface, and a guide protrusion is formed at a lower portion thereof, and the head portion case is formed in the first accommodation portion. Guide grooves corresponding to the guide protrusions of the upper and lower operating holes are formed on the bottom surface, and the guide grooves guide the up and down movement of the guide protrusions, and the left and right operating holes are installed between the inclined surfaces of the upper and lower operating holes. A circular gear part meshed with the gear part is formed and rotates by engaging the gear part in accordance with the up and down movement of the up and down operation tool.

In addition, the pair of upper and lower operation openings of the toothbrush portion each have one end portion of the surface facing each other to form an inclined surface, and a protrusion is formed along the inclined surface and a guide protrusion is formed at the lower portion thereof, and the head portion case is the first accommodating portion. Guide grooves corresponding to the guide protrusions of the upper and lower operating holes are formed on the bottom surface, so that the guide grooves guide the up and down movement of the guide protrusions, and are provided between the inclined surfaces of the upper and lower operating holes. It is provided with an inclined surface, the engaging groove portion is inserted into the locking projection of the up and down operating port is formed along the inclined surface is pushed by the locking projection during the up and down movement of the up and down operation characterized in that the left, right movement.

delete

According to the electric toothbrush of the present invention, by covering the open upper surface of the head portion case with a cap portion, the assembly of the head portion is very easy, thereby reducing the assembly time.

In addition, by providing the left and right operating port and the operation bar integrally with the head unit, the correct operation of the left and right operating port is made, and the up, down, left and right movements of the toothbrush part are made stable.

In addition, due to the simple structure of the drive unit is easy to manufacture and assembly, the number of parts can be reduced to reduce the manufacturing cost, there is an effect of improving the quality of the product by the stable and accurate operation of the drive unit.

1 is a perspective view of the electric toothbrush in accordance with the present invention.
Figure 2 is an exploded perspective view showing the electric toothbrush in accordance with the present invention.
Figure 3 is a main portion perspective view showing the configuration of the head portion case, the head portion, the cap portion in the electric toothbrush in accordance with the present invention.
Figure 4 is a perspective view showing other embodiments of the head portion in the electric toothbrush in accordance with the present invention.
Figure 5 is a perspective view showing another embodiment of the head portion in the electric toothbrush in accordance with the present invention.
Figure 6 is a perspective view of the driving unit showing the configuration of the drive unit in the electric toothbrush according to the present invention.
7 is an enlarged view and an enlarged view of a main portion for explaining a power transmission unit of a drive unit in an electric toothbrush according to the present invention;
8 is an operation for explaining the operation of the electric toothbrush according to the invention.

These and other objects, features and other advantages of the present invention will become more apparent by describing in detail preferred embodiments of the present invention with reference to the accompanying drawings. Hereinafter, with reference to the accompanying drawings will be described in detail the electric toothbrush of the present invention. For purposes of this specification, like reference numerals in the drawings denote like elements unless otherwise indicated.

1 is a perspective view showing an electric toothbrush in accordance with the present invention, Figure 2 is an exploded perspective view showing an electric toothbrush in accordance with the present invention, Figure 3 shows a head portion case and cap in the electric toothbrush configuration according to the present invention It is Yobu Sashimi. In addition, Figure 4 (a), (b), (c) is a perspective view showing other embodiments of the head portion in the electric toothbrush according to the invention, Figures 5 (a), (b), (c) 6 is a perspective view showing still another embodiment of the head portion in the electric toothbrush according to the present invention, Figure 6 is a perspective view of the drive unit showing the configuration of the drive unit in the electric toothbrush according to the present invention, Figure 7 is an electric toothbrush in accordance with the present invention An enlarged and exploded view of the main part for explaining the power transmission body of the drive unit, Figure 8 (a), (b) is an operation diagram for explaining the operation of the electric toothbrush according to the present invention.

1 to 6, the electric toothbrush of the present invention includes a head part case 100, a head part 200, a cap part 300, a driving part 400, a power supply part 500, Body part case 600 is included.

First, as shown in FIGS. 1 to 3, the head part case 100 is provided with a first accommodating part 110 having an upper surface and a second accommodating part 120.

Here, a fastening hole 111 to which the fixing pin 112 is coupled is formed on the sidewall of the first accommodating part 110, and a vent hole 113 through which air can pass is formed at the bottom of the first accommodating part 110. One end portion of the portion 120 is provided with a coupling portion 121 coupled to the body case 600, the bottom portion is formed with a partition wall 122 across the center so that the operation bar 250 to be described later are respectively inserted. . In addition, hook grooves 130 are formed at upper edges of the first accommodating part 110 and the second accommodating part 120 at predetermined intervals.

The head part 200 includes a toothbrush part 210 mounted on the first accommodating part 110 of the head part case 100 and an operation bar 230 seated on the second accommodating part 120.

Toothbrush unit 210 is divided into the upper and lower operating port 211 to be moved up and down, the brush head is planted on the upper surface, and the left and right operating port 221 to move left and right, the brush head is planted on the upper surface.

Here, the toothbrush part 210 may be configured in various embodiments according to the configuration and coupling relationship of the up and down operating tool 211, the left and right operating tool 221.

As shown in FIG. 3, one embodiment of the toothbrush part 210 includes a pair of upper and lower operation tools 211 inserted into the left and right sides of the first accommodating part 110 to face each other and face each other. Both sides of the inclined surface 212 based on the center of the, the long hole 213 is formed on the side is provided. And, the left and right operating tool 221 is provided in a pair is inserted into the upper, lower side of the first receiving portion 110, the inclined surface 222 corresponding to the inclined surface 212 of the upper and lower operating holes 211 is formed , The through hole 223 is formed on the side. The upper and lower operating holes 211 and the left and right operating holes 221 are fastening holes 111 formed on the side wall of the head part case 100, long holes 213 of the upper and lower operating holes, and through holes 223 of the left and right operating holes. It is provided to be fixed by the fixing pin 112 is inserted.

As shown in (a), (b), (c) of Figure 4 is another embodiment of the toothbrush portion 210 is provided with a pair of upper and lower operating holes 211 is the left of the first receiving portion 110 , The right side is inserted to face each other, one end of the facing surface to form the inclined surface 212, the gear portion 214 is formed at the lower end of the inclined surface 212 is provided. In addition, the left and right operating tool 221 is provided between the inclined surface 212 of the up and down operating tool 211, the lower gear is provided with a circular gear portion 224 is engaged with the gear portion 214 of the upper and lower operating tool. . Here, the up and down operation tool 211 is formed with a guide protrusion 215 in the lower portion, the guide groove 216 is provided on the bottom surface of the first receiving portion 110 corresponding to the guide protrusion 215 is the guide groove portion It is inserted into the 216 to be provided to move up and down, the left and right operating tool 221 is provided to rotate by the engagement of the gear unit (214, 224) in accordance with the up and down movement of the up and down operating tool (211).

As shown in (a), (b) and (c) of FIG. 5, another embodiment of the toothbrush part 210 is provided with a pair of upper and lower actuating holes 211, so that The left and right sides are inserted to face each other, and one end of the facing surface forms an inclined surface 212, and a locking protrusion 217 is provided to protrude along the inclined surface 212. In addition, the left and right operating tool 221 is provided between the inclined surface of the upper and lower operating tool 211 to form an inclined surface 222 corresponding to the inclined surface 212 of the up and down operating tool 211, the engaging projection along the inclined surface 222 A locking groove 225 into which the 217 is inserted is provided. Here, the up and down operation tool 211 is formed with a guide protrusion 215 in the lower portion, the guide groove 216 is provided on the bottom surface of the first receiving portion 110 corresponding to the guide protrusion 215 is the guide groove portion It is inserted into the 216 is moved up and down, the left and right operating tool 221 is provided to be left and right movement by being pushed by the locking protrusion 217 according to the up and down movement of the up and down operating tool (211).

The operating bar 230 is integrally connected to the up and down operating holes 211 of the above embodiments, and the operating bar 230 is accommodated in the second accommodating part 120.

The cap part 300 covers the upper surfaces of the first and second accommodating parts 110 and 120 of the head case case 100, but the bristles of the toothbrush part 210 seated on the first accommodating part 110 are moved to the outside. Cover the edge portion of the first receiving portion 110 side and the open upper surface of the second receiving portion 120 side to be exposed.

In addition, the lower end of the cap 300 is provided with a hook 310 at a position corresponding to the hook groove 130 of the head case case 100 is forcibly coupled to the hook groove 130.

On the other hand, the driving unit 400 is connected to the end of the operation bar 230.

As shown in FIG. 6 and FIG. 7, the driving unit 400 includes a motor 410 generating power and a power transmission body 420 coupled to the rotation shaft 411 of the motor 410, and power. It consists of a pair of actuating rods 430 coupled to the carrier 420.

Here, the power transmission body 420 is made of a cylindrical shape, the guide groove 421 of the left and right zigzag shape is formed along the outer surface.

And, one pair of the operating rod 430 is coupled to one end of the guide groove 421 of the power transmission body 420, one in the left groove of the zigzag on one side of the power transmission body 420, the other power transmission body The other side of the 420 is fitted into the right groove of the zigzag is operated up and down to shift each other according to the rotation of the power transmission body.

The power supply unit 500 supplies power to the motor 410 of the driving unit 400. Here, the power supply unit 500 is preferably to use a battery to facilitate the use of the electric toothbrush, it is preferable that the battery fastening unit 510 is fastened to one side of the motor.

The body part case 600 is coupled to the head part case 100 by covering the outside of the driving part 400 and the power supply part 500. Here, the body case 600 is preferably divided into an upper case 610 and a lower case 620 so as to facilitate assembly, and may cover the driving unit 400 and the power supply unit 500 at a time. However, it is preferable that the lid part 630 separately covering only the fastener fastening part 510 is separated from the upper and lower cases 610 and 620 so as to easily replace the battery.

Referring to the electric toothbrush of the present invention configured as described above are as follows. Here, the toothbrush portion will be described taking an embodiment as an example.

As shown in (a) and (b) of FIG. 8, when toothpaste is applied to the bristles of the toothbrush part 210 and the power switch is turned on, the motor 410 supplied with the power from the power supply unit 500 is driven to drive the motor. The rotating shaft 411 of the rotation, the power transmission body 420 coupled to the rotating shaft 411 of the motor is rotated, a pair of operating rods coupled to the guide groove 421 in accordance with the rotation of the power transmission body 420 430 is zigzag guide groove 421 is operated to be shifted up and down mutually.

In more detail, one end of the operation rod 430 is located at the highest left side of the guide groove 421 according to the rotation of the power transmission body 520, and one end of the other operation rod 421 is formed on the guide groove 421. The operating rod 421 pushes the operation bar 230 connected to the other end to the upper side and the other operation rod 421 moves the operation bar 230 connected to the other end. Pulled downwards.

Therefore, the pair of up and down operating holes 211 connected integrally with the operation bar 230 operate up and down to shift each other, and the pair of left and right operating holes 221 are inclined surfaces 212 of the up and down operating holes 211. It is left and right to operate by pushing against each other.

As described above, the present invention is easy to mount the upper part of the head part case is open, and when the head part is mounted, the hook of the cap part is forcibly coupled to the hook groove of the head part case to cover the open upper part. Assembly can be facilitated.

In addition, by providing the left, right operation tool and the operation bar integrally, the correct operation of the left, right operation tool is made, and thus the up, down, left, right movement of the toothbrush part is made stably and accurately.

 In addition, by improving the simple structure of the connection of the drive unit for changing the rotational motion of the motor into a linear motion, it is easy to manufacture and assembly, to improve the product quality by the stable operation of the drive unit.

Although the preferred embodiments of the present invention have been described, the present invention is not limited to the specific embodiments described above. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the appended claims, And equivalents should also be considered to be within the scope of the present invention.

100: head part case 110: first accommodating part
111: fastening hole 112: fixing pin
113: vent hole 120: second receiving portion
121: coupling portion 122: partition wall
130: hook groove 200: head portion
210: toothbrush portion 211: up and down operating port
212: slope 213: long hole
214: gear portion 215: guide protrusion
216: guide groove 217: locking projection
221: left and right operating tool 222: inclined surface
223: through hole 224: gear part
225: locking groove 230: operation bar
300: cap 310: hook
400: driving unit 410: motor
411: rotating shaft 420: power train
421: guide groove 430: operating rod
500: power supply unit 510: battery connection unit
600: body case 610: upper case
620: lower case 630: lid

Claims (6)

A head part case having a first accommodating part and a second accommodating part, the upper surface of which is opened;
The left and right operating port and the upper and lower operating port which is mounted on the first receiving part of the head part case and the bristles are planted on the upper surface, the upper and lower operating holes are provided in pairs to face each other on the left and right sides of the first receiving part. A head portion comprising a toothbrush portion inserted into the bogie, and a pair of operation bars connected to the two upper and lower operation openings of the toothbrush portion respectively and seated on the second receiving portion;
A cap part covering an upper edge of the first accommodating part and an open upper part of the second accommodating part so that bristles of the toothbrush part are exposed to the outside;
A pair of actuating rods integrally connected to the two actuating bars of the head portion, and a guide groove for inserting one end of the pair of actuating rods, respectively, are formed in a zigzag shape along the circumferential direction on the outer surface thereof. And a motor coupled to a transmission shaft and a rotation shaft of the power transmission body to transmit a rotational force according to power supply to the power transmission body, and one end of the pair of operating rods is guided to the guide groove when the power transmission rotates. A driving unit for moving the pair of operating rods in an up and down direction as the mold moves;
A power supply unit provided at one side of the driving unit to apply power to the driving unit;
A body part case coupled to the head part case by covering the outside of the driving part and the power supply part;
The up and down operating port of the toothbrush portion is moved in the up and down direction through the power of the operation bar moving in the up and down direction in conjunction with the operation rod of the drive unit,
The left and right operating mechanism of the toothbrush portion is an electric toothbrush that moves in the left and right directions in conjunction with the vertical movement of the vertical operation. The method of claim 1,
Hook grooves are formed on the upper surface of the head part case at regular intervals, and hooks are provided on the surface contacting the upper surface of the head part case at regular intervals so that the hook of the cap part is forcedly coupled to the hook groove of the head part case. Electric toothbrush, characterized in that. delete The method of claim 1,
The pair of upper and lower operation openings of the toothbrush portion are formed on both sides of the inclined surface on the basis of the center of the surface facing each other and at the same time a long hole is formed on the side,
The left and right operating mechanism is provided in a pair is inserted into the upper and lower, the first receiving portion is formed inclined surface corresponding to the inclined surface of the up and down operating mechanism, the through hole is formed on the side,
The left and right operating tool and the vertical operating tool is fixed by a fastening hole is formed on the side wall of the head portion case and the fixing pin is inserted into the through hole of the vertical hole and the left and right operating tool. The method of claim 1,
The pair of upper and lower operation openings of the toothbrush portion each have one end portion of the surface facing each other to form an inclined surface, a gear portion is formed at the lower end of the inclined surface, and a guide protrusion is formed at the lower portion thereof.
The head part case has a guide groove portion corresponding to the guide protrusion of the up and down operation mechanism is formed on the bottom surface of the first accommodating portion, the guide groove portion guides the up and down movement of the guide protrusion,
The left and right operating mechanism is installed between the inclined surface of the up and down operating mechanism is formed in the lower end of the circular gear portion engaging with the gear portion, it is characterized in that the rotary movement by the engagement of the gear portion in accordance with the up and down movement of the up and down operation sphere Electric toothbrush. The method of claim 1,
The pair of upper and lower operation openings of the toothbrush portion each have one end portion facing each other to form an inclined surface, and a protrusion is formed along the inclined surface, and a guide protrusion is formed on the lower portion thereof.
The head part case has a guide groove portion corresponding to the guide protrusion of the up and down operation mechanism is formed on the bottom surface of the first accommodating portion, the guide groove portion guides the up and down movement of the guide protrusion,
The left and right operating mechanisms are provided between the inclined surfaces of the up and down operating mechanisms to have inclined surfaces corresponding to the inclined surfaces, and the engaging grooves into which the engaging protrusions of the up and down operating holes are inserted are formed along the inclined surfaces, so Electric toothbrush, characterized in that the left and right movement by being pushed on the locking projection.

Images