KR100629839B1 - Rotary type power toothbrush - Google Patents

Abstract

The present invention relates to a rotary electric toothbrush, and more particularly, the bristles are planted uniformly along the outer circumferential surface of the toothbrush head perpendicular to the longitudinal direction of the toothbrush head, and both ends of the toothbrush are bent in opposite directions to each other and the obtuse angles are respectively It is configured to have two universal joints provided therein to transfer power from the electric motor to the toothbrush head through the articulated toothbrush, so that the articulated toothbrush between the front face of the tooth and the inner surface of the cheek is excessive The present invention relates to an electric toothbrush that enables easy and efficient brushing by brushing the bristles while massaging the gingiva by rotation of the bristle shaft while being transported without interference.

"의 형상을 가지며, 상기 칫솔모대와 연결되는 축을 지지하는 칫솔목과; 상기 칫솔모의 일측면을 둘러싸는 형태로 상기 칫솔목의 상단에 구비되는 칫솔모커버와; 상기 칫솔목의 하단부와 나사 결합되는 상부케이스와; 내부에 전기모터와 멜로디장치 및 충전지를 포함하고, 저면에 전원플러그를 구비하며, 외부면에 작동스위치와 충전표시장치를 구비하고, 상기 상부케이스의 하단부와 나사 결합되는 본체케이스와; 상기 본체케이스의 하단부에 착탈식으로 결합되어 상기 전원플러그를 수분으로부터 보호하는 전원커버와; 상기 전기모터의 축으로부터 굴절된 칫솔목의 내부를 경유하여 상기 칫솔모대까지 연결되어 상기 전기모터의 동 력을 상기 칫솔모대로 전달해 주는 동력 전달 장치;를 포함하여 구성되되,The rotary electric toothbrush of the present invention is bristle; A bristle bristle in which the bristles are implanted in a longitudinal direction and a vertical direction along an outer circumferential surface thereof; Both ends are formed in a cylindrical shape that bends in opposite directions,

Toothbrush having a shape and supporting a shaft connected to the bristles; bristle cover provided on the top of the bristles in a form surrounding one side of the bristle; upper portion screwed with the lower end of the bristle A main body case including an electric motor, a melody device, and a rechargeable battery therein, a power plug on a bottom surface, an operation switch and a charging display device on an outer surface thereof, and a screw coupled to a lower end of the upper case; A power cover which is detachably coupled to the lower end of the main body case to protect the power plug from moisture, and is connected to the toothbrush head via the inside of the toothbrush bent from the shaft of the electric motor to connect the power of the electric motor; Is configured to include; power transmission device for delivering to the toothbrush head,

The rechargeable battery is connected to the power plug and the charging display device to charge an electric current applied through the power plug therein during charging, and the charging display device is configured by a combination of a light emitting element and a resistor to charge the rechargeable battery. Indicate the state to the user, the operation switch is connected to the rechargeable battery and the electric motor to apply a current from the rechargeable battery to the electric motor to drive the electric motor to forward and reverse rotation, the melody device is operated It is connected to a switch and provided with a timer and a speaker, when the current is applied by the operation switch to start the timer, play the melody through the speaker, characterized in that the melody playing stops when the timer is stopped.

Electric Toothbrush, Universal Joint

Description

Rotary type power toothbrush

1 is a cross-sectional view of a rotary electric toothbrush in accordance with one embodiment of the present invention.

Figure 2 is a right side cross-sectional view showing a portion of the main body case removed by removing the power cover from the rotary electric toothbrush shown in FIG.

Figure 3 is a left side view showing the power cover removed from the rotary electric toothbrush shown in FIG.

Figure 4 is an electrical diagram of a rotary electric toothbrush in accordance with one embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

1: head 2: body

3: toothbrush neck 10: toothbrush head

20: brush head 30: brush head cover

51, 52: universal joint 61, 62, 63: 1, 2, 3 axes

110: body case 120: upper case

130: power cover 210: electric motor

220: rechargeable battery 230: melody device

240: power plug 250: operation switch

260 charge display device

The present invention relates to a rotary electric toothbrush, and more particularly, the bristles are planted uniformly along the outer circumferential surface of the toothbrush head perpendicular to the longitudinal direction of the toothbrush head, and both ends of the toothbrush are bent in opposite directions to each other so that the middle part and the obtuse angle respectively. It is configured to have two universal joints provided therein to transfer power from the electric motor to the toothbrush head through the articulated toothbrush, so that the articulated toothbrush between the front face of the tooth and the inner surface of the cheek is excessive The present invention relates to an electric toothbrush that enables easy and efficient brushing by brushing the bristles while massaging the gingiva by rotation of the bristle shaft while being transported without interference.

Toothbrushes are essential tools for oral hygiene, including tooth decay prevention, gum health and bad breath removal.

In general, the method of brushing teeth using a toothbrush is a lateral method (회전 法) and a rotary method (回轉 法). The former is a method of brushing teeth by moving the toothbrush from side to side, but this method does not remove enough dental plaque in the gaps of the teeth and causes the cervical abrasion due to the sharp edges of the bristles. May appear. The latter is a method of tilting the brush head to 45 ° from the inside of the alveolar to lower the alveolar to the boundary of the tooth, and then rotate the wrist from the place where the tooth starts to wipe the toothbrush surface round. If you brush your teeth in this way, the teeth will be swept in the vertical direction, so you can wipe the gaps between the teeth to remove plaque and prevent tooth decay. It can stimulate the epithelial keratination, giving the alveolar massage effect an increase in resistance to infection.

The most commonly used toothbrushes today are brushed toothbrushes at the end of the handle, which are both inexpensive and easy to use. However, if you brush your teeth in the wrong way using such a manual toothbrush, there is a problem in that the effect of preventing tooth decay and cervical abrasion.

Recently, an electric toothbrush that automatically rotates the brush head by the electric motor massages the cervical region and teeth, and has been developed, which is widely used among adults who are interested in dental health as well as children who are not used to brushing teeth. to be. In particular, the rotary electric toothbrush that the bristles rotate about the longitudinal axis of the handle is configured to sweep the gap between the teeth while the bristles rotate when brushing the brush has the advantage of cleaning the teeth by the above-described rotation method.

However, since most electric toothbrushes are configured such that the toothbrush bristles where the bristles are planted and the torso used as handles and the toothbrush connecting the bristles and the torso are arranged almost in a straight line, the toothbrush handles can be used to brush the teeth. Since it interferes with the inner surface, it is difficult to brush the teeth of the electric toothbrush by moving the body of the electric toothbrush while maintaining the surface of the bristles to make uniform contact with the tooth surface.

An electric toothbrush for solving this problem has been proposed as the Republic of Korea Patent Publication No. 0087968 (name of the invention: electric toothbrush). The electric toothbrush is configured to bend obliquely with the main body case and the intermediate case for connecting the main body case and the head case having a brush head and the bristle shaft rotation, the electric motor is built, the power transmission means including a plurality of gears and shafts Power is transmitted from the motor to the rotary shaft of the bristles via the main body case and the intermediate case bent obliquely. In this configuration, the toothbrush has an obtuse angle rather than parallel to the main body case, so that the molar area can be brushed more easily, while the head case is placed parallel to the front of the front teeth to brush the front area of the incisor. If the main body case is too close in the direction of the user's face there is a problem in that it is inconvenient to grip the main body case.

An object of the present invention is to solve the above problems of the conventional cooling apparatus.

That is, both ends of the toothbrush bends at a predetermined angle in opposite directions to each other, and a power transmission means for transmitting power from the electric motor to the toothbrush head through the refracted toothbrush is bent between the gap between the front face of the tooth and the inner surface of the cheek meat. The purpose of the present invention is to provide a rotatable electric toothbrush in which the toothbrush can move without undue interference and at the same time the toothbrush head and the body are parallel in the longitudinal direction, so that the entire tooth including the molar and incisors can be easily brushed. have.

The present invention as a technical idea for solving the above problems,

"의 형상을 가지며, 상기 칫솔모대와 연결되는 축을 지지하는 칫솔목과; 상기 칫솔모의 일측면을 둘러싸는 형태로 상기 칫솔목의 상단에 구비되는 칫솔모커버와; 상기 칫솔목의 하단부와 나사 결합되는 상부케이스와; 내부에 전기모터와 멜로디장치 및 충전지를 포함하고, 저면에 전원플러그를 구비하며, 외부면에 작동스위치와 충전표시장치를 구비하고, 상기 상부케이스의 하단부와 나사 결합되는 본체케이스와; 상기 본체케이스의 하단부에 착탈식으로 결합되어 상기 전원플러그를 수분으로부터 보호하는 전원커버와; 상기 전기모터의 축으로부터 굴절된 칫솔목의 내부를 경유하여 상기 칫솔모대까지 연결되어 상기 전기모터의 동력을 상기 칫솔모대로 전달해 주는 동력 전달 장치;를 포함하여 구성되되,Bristles; A bristle bristle in which the bristles are implanted in a longitudinal direction and a vertical direction along an outer circumferential surface thereof; Both ends are formed in a cylindrical shape that bends in opposite directions,

Toothbrush having a shape and supporting a shaft connected to the bristles; bristle cover provided on the top of the bristles in a form surrounding one side of the bristle; upper portion screwed with the lower end of the bristle A main body case including an electric motor, a melody device, and a rechargeable battery therein, a power plug on a bottom surface, an operation switch and a charging display device on an outer surface thereof, and a screw coupled to a lower end of the upper case; A power cover which is detachably coupled to the lower end of the main body case to protect the power plug from moisture, and is connected to the toothbrush head via the inside of the toothbrush bent from the shaft of the electric motor to power the electric motor; It is configured to include; a power transmission device for delivering to the toothbrush rod,

The rechargeable battery is connected to the power plug and the charging display device to charge an electric current applied through the power plug therein during charging, and the charging display device is configured by a combination of a light emitting element and a resistor to charge the rechargeable battery. Indicate the state to the user, the operation switch is connected to the rechargeable battery and the electric motor to apply a current from the rechargeable battery to the electric motor to drive the electric motor to forward and reverse rotation, the melody device is operated A rotary electric toothbrush which is connected to a switch and includes a timer and a speaker to start the timer when the current is applied by the operation switch, to play the melody through the speaker, and to stop the melody when the timer is stopped. To provide.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view of a rotary electric toothbrush in accordance with one embodiment of the present invention, Figure 2 is a right side cross-sectional view showing a portion of the main body case removed by removing the power cover from the rotary electric toothbrush shown in Figure 1, Figure 3 is a left side view showing the power cover removed from the rotary electric toothbrush shown in FIG.

As shown in Figures 1 to 3, the rotary electric toothbrush according to an embodiment of the present invention includes a head section (1) and an electric motor 210 and a rechargeable battery (brush) 20 (brush) It comprises a body section (2) including a 220 and a tooth neck (neck, 3) connecting the head (1) and the body (2).

The head 1 is composed of a bristle brush (20) and a bristle brush cover (brush cover 30) surrounding one side of the bristle (20) is provided with a bristle (20) and bristle (20).

The bristle 20 is composed of a plurality of bristle strands bristles that extend in a direction perpendicular to the longitudinal direction of the bristle bristle 10 is planted so as to be uniformly distributed along the circumference and the longitudinal direction of the bristle bristle 10 Will form the shape of. As the bristle bristle 10 is horizontally positioned at the time of brushing, the ends of the bristle strands, ie, the outer circumferential surface of the bristle 20, continuously contact the front surface of the tooth and wipe the gap between the teeth.

The bristle cover 30 is provided at the tip of the bristle neck 3 in a form surrounding one side of the bristle 20, and when brushing the teeth, the bristle 20 contacts the skin inside the oral cavity in addition to the cervical region and the teeth, thereby causing skin damage. It prevents from causing. Here, the bristle cover 30 may be formed integrally with the tip of the toothbrush 3 or may be detachably attached to the tip of the toothbrush 3.

Body portion 2 is composed of a cylindrical body case 110 and the upper case 120 is screwed to the upper portion of the body case 110 and the power cover 130 detachably coupled to the lower end of the body case 110. do.

The main body case 110 having a cylindrical shape to facilitate gripping when brushing the electric motor 210, the rechargeable battery 220 and the melody device 230 therein and has a power plug 240 on the bottom An operation switch 250 and a charging display device 260 are provided on an external surface. The rechargeable battery 220 is connected to the power plug 240 and the charging display device 260 to charge a current applied through the power plug 240 therein at the time of charging, and the rechargeable display device 260 is connected to the rechargeable battery 220. ) Shows the charging status to the user. In addition, the operation switch 250, the electric motor 210 and the melody device 230 is connected to the rechargeable battery 220, when the operation switch 250 is turned on (on) when brushing the current charged in the rechargeable battery 220 Is applied to operate the electric motor 210 and the melody device 230.

On both sides of the bottom of the main body case 110, a pair of plug support parts 115 and 116 protruding downwards, which can hold the power plug 240, is formed between the plug support parts 115 and 116. 240 is squeezed to rotate 180 °. As shown in FIG. 2, the side surface of the power plug 240 facing the bottom surface of the main body case 110 so that interference with the bottom surface of the main body case does not occur when the power plug 240 rotates about the rotary shaft 241. To form. Here, the protrusion 113 is formed on the bottom of the main body case 110, and the angle between the pin 242 of the power plug 240 and the bottom of the main body case 110 is 0 ° (a) and 90 ° (b). And the grooves 245, 246, and 247 are formed at points where side surfaces of the power plug 240 formed as curved surfaces contact the protrusions at 180 ° (c) to fix the power plug 240 at each angle. Configure it to work. Therefore, when not charging, the power plug 240 is fixed to maintain an angle of 0 ° (a) with the bottom of the body case 110, and when charging, the power plug 240 is rotated to rotate the body case 110. After fixing to achieve an angle of 180 ° (c) with the bottom of the) is inserted into the pin of the power plug 240 to the external power outlet to charge. In addition, the lower end of the main body case 110 is formed with a groove 111 along the periphery of the outer circumferential surface, and the projection 131 corresponding to the groove 111 along the inner circumferential surface at the upper end of the power cover 130 having the upper surface opened. By forming, the power cover 130 is detachably coupled to the lower end of the body case (110). Here, when not charging, the power cover 130 is attached to the main body case 110 in order to seal the power plug 240 from external moisture, etc., and during charging, the power plug 240 is connected to an external power outlet. Remove the power cover 130 from the main body case 110 to be connected.

The upper case 120 has a lower end cylindrical shape and the upper end is conical shape is configured to be fastened to the female screw formed on the inner surface of the upper end of the main body case 110, the male screw formed on the outer peripheral surface.

The shape of the toothbrush neck 3 is a hollow cylindrical in which both ends are refracted by the same angle in the opposite direction, the female thread formed in the lower end of the toothbrush 3 is configured to be engaged with the male screw formed on the outer peripheral surface of the upper end of the upper case 120 . That is, the toothbrush 3 is configured to rise vertically from the point connected to the upper case 120 of the body portion 2 at the lower end, and to rise at an obtuse angle with the lower end at an intermediate part, and to rise vertically at the upper end again. In addition, the toothbrush head 10 of the head (1) is axially coupled to the center of the inner diameter of the upper end of the toothbrush (3) molar when the user grips the body case 110 of the torso part (2) and brush the front of the molar teeth Between the curved surface of the gum formed from the front to the front teeth and the inner curved surface of the cheek teeth corresponding to the bristle bristle 10 forming an obtuse angle with the bristle bristle 10, the upper surface of the bristle cover 30 and the bristle neck 3 Only a portion of the upper end of is in contact with the inner surface of the it ball. Therefore, the rotary electric toothbrush according to one embodiment of the present invention reduces the amount of interference between the toothbrush and the inner surface of the tooth ball when brushing the molars so that the toothbrush can be easily brushed with less force. Do it. In addition, since the lower end of the toothbrush 3 is formed at an obtuse angle with the middle of the toothbrush 3, the body part 2 extending from the lower end of the toothbrush 3 is configured to be parallel to the toothbrush stem 10. When brushing the front part of the front teeth, the body case 110 of the body part 2 is held in a state in which the body part 110 of the front part of the front teeth of the front teeth of the front tooth is not easily pulled in the direction of the tooth, and the teeth can be easily brushed. Can be.

In this way, the toothbrush neck (3) of the curved shape of both ends is inclined at an obtuse angle with the main body case 110, so that the head (1) from the shaft 64 of the electric motor 210 provided inside the main body case In order to transmit power to the toothbrush bristle 10 of 10), a power transmission device capable of transmitting power via the bent toothbrush 3 is required. Hereinafter, the power transmission device of the rotary electric toothbrush and the connection structure of each element connected thereto according to an embodiment of the present invention will be described.

As shown in FIG. 1, the shaft 64 of the electric motor 210 has an upper end coupled to the lower end of the third connecting shaft 63 and the upper end of the upper case 120, and thus the third connecting shaft 63. The bearing 72 is provided inside the upper end of the upper case 120 to transmit the power to the shaft coupled to the two shafts. In the present embodiment, the two shafts are stepped in a stepped manner to be engaged with each other, and may be coupled in various manners including key-keyway coupling. The second connecting shaft 62 is configured to extend from the inside of the lower end of the toothbrush 3 to the upper end along the inner center of the middle part, and should always rotate in an obtuse angle with the third connecting axis 63. The lower end of the shaft 62 may be connected to the upper end of the third connecting shaft 63 through a universal joint 52 to enable power transmission between the two shafts 62 and 63 forming obtuse angles. . In addition, the upper end of the second connecting shaft 62 is connected to the lower end of the first connecting shaft 61 extending vertically upwards inside the upper end of the toothbrush 3 through another universal joint 51. This allows power transmission between the two axes 61 and 62 which are obtuse with each other. Toothbrush head 10 is fitted to the upper end of the first connecting shaft 61 is rotated by receiving the power of the electric motor 210 finally. Here, when the universal joint 52 connecting the third connecting shaft 63 and the second connecting shaft 62 is a hook joint, the most common type, the third connecting shaft 63 and the second connecting shaft The rotation speed ratio of 62 is periodically varied with time, and in particular, as the angle between the two axes increases, the variation range of the rotation speed ratio becomes large. As such, when the rotational speed ratio of the two shafts is periodically changed, vibration occurs in the electric toothbrush. When the vibration of the electric toothbrush becomes excessive, excessive force is applied to the teeth and the alveolar at the time of brushing, thereby causing tooth and cervical wear. However, in the present embodiment, since the second connecting shaft 62 is connected to the first connecting shaft 61 through another universal joint 51, two universal joints 51 connected to both ends of the second connecting shaft 62 are provided. , 52 cancels the fluctuations in the rotational speed, so that the first connecting shaft 61 is uniformly rotated at the same rotational speed as the third connecting shaft 63. On the other hand, the upper end of the toothbrush neck 3 to which the first connecting shaft 61 and the toothbrush head 10 is preferably provided with a waterproof material such as an o-ring (not shown) to prevent the penetration of moisture. Good to do.

Figure 4 is an electrical configuration of a rotary electric toothbrush in accordance with an embodiment of the present invention.

As shown in FIG. 4, the power plug 240 is connected to an external home power outlet to apply an alternating current, and the applied current is converted into a direct current having a reduced voltage through the rectifier 280. The charging display device 260 is composed of a combination of a light emitting device (LED, 261, 262, 263) and a resistor 265 provided on the outside of the electric toothbrush, respectively on the inlet side of the rechargeable battery 220 and the main body of the rechargeable battery 220. Connected to indicate the state of charge of the rechargeable battery 220, the light emitting elements (261, 262, 263) means the state of charge, such as 'charge request', 'charging', 'charging complete', respectively, when lit . In addition, when the user turns on the operation switch 250 to brush the electric current is applied to the electric motor 210 to drive the electric motor 210. Here, the operation switch 250 is configured to turn on (on) in both directions in the off (off) position, and by switching the current circuit connected to the electric motor 210 in response to the on (on) position in each direction of electricity The motor 210 is rotated forward and reverse in both directions. Therefore, when brushing teeth, the direction in which the bristle 20 rotates in an appropriate direction can be changed according to the position of the tooth and the electric toothbrush. In addition, when a current is applied to the melody device 230 together with the electric motor 210, the melody chip 231 of the melody device operates the built-in timer while playing the melody through the speaker 232, for example, For example, if the timer expires after 3 minutes has elapsed, the melody will be terminated and the user will be notified of the end time of brushing teeth.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible in the art without departing from the technical spirit of the present invention. It will be clear to those of ordinary knowledge.

As described above, the rotary electric toothbrush according to the present invention is provided with a power transmission means for transmitting power from the electric motor to the brush head through the refracted toothbrush bends both ends of the toothbrush by a predetermined angle in the opposite direction to each other. This reduces the amount of interference between the toothbrush and the inner surface of the cheek teeth when brushing the molar teeth, thereby facilitating the transfer of the powered toothbrush, and when brushing the teeth, the body can be gripped parallel to the front face of the teeth. There is an effect that can be brushed easily and efficiently.

Claims (2)

In electric toothbrush, Bristle 20; A bristle bristle 10 into which the bristle 20 is planted in a longitudinal direction and a vertical direction along an outer circumferential surface thereof; Both ends are formed in a cylindrical shape that bends in opposite directions,

Toothbrush neck (3) having a shape of &quot;," A bristle cover 30 provided at an upper end of the bristle neck 3 in a form surrounding one side of the bristle 20; An upper case 120 screwed with the lower end of the toothbrush neck 3; An electric motor 210, a melody device 230, and a rechargeable battery 220 are included therein, and a power plug 240 is provided on a bottom surface thereof, and an operation switch 250 and a charge display device 260 are provided on an external surface thereof. And, the main body case 110 is screwed with the lower end of the upper case 120; A power cover 130 detachably coupled to the lower end of the main body case 110 to protect the power plug 240 from moisture; It is connected to the toothbrush head 10 via the inside of the toothbrush 3 refracted from the shaft 64 of the electric motor 210 to transfer the power of the electric motor 210 to the toothbrush head 10. Giving power transmission device; Consists of including The rechargeable battery 220 is connected to the power plug 240 and the charging display device 260 to charge a current applied through the power plug 240 therein during charging. The charging display device 260 is composed of a combination of light emitting elements 261, 262, and 263 and a resistor 265 to display a state of charge of the rechargeable battery 220 to a user. The operation switch 250 is connected to the rechargeable battery 220 and the electric motor 210 to apply a current from the rechargeable battery 220 to the electric motor 210 to forward and reverse the electric motor 210. Driven to rotate, The melody device 230 includes a melody chip 231 and a speaker 232 connected to the operation switch 250 and having a built-in timer to start the timer when a current is applied by the operation switch 250. Rotatable electric toothbrush, characterized in that playing the melody through the speaker 232 and stops the melody playing when the timer is stopped. The method of claim 1, The power transmission device, A third connecting shaft 63 having a lower end connected to an upper end of the shaft 64 of the electric motor 210; A second connecting shaft 62 having a lower end connected to the upper end of the third connecting shaft 63 through the universal joint 52; A first connecting shaft 61 having a lower end connected to an upper end of the second connecting shaft 62 through another universal joint 51 and fitted with the toothbrush bristle 10 at an upper end thereof; Rotating electric toothbrush, characterized in that consisting of.

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