CN111888025A

CN111888025A - Electric tooth brush

Info

Publication number: CN111888025A
Application number: CN202010857960.5A
Authority: CN
Inventors: 胡文涛; 莫圳杰
Original assignee: Shenzhen Yuanhai E Commerce Co ltd
Current assignee: Shenzhen Yuanhai E Commerce Co ltd
Priority date: 2020-08-24
Filing date: 2020-08-24
Publication date: 2020-11-06

Abstract

The invention discloses an electric toothbrush. The electric toothbrush comprises a brush head, a brush rod, a motor, a camera and a handle. One side of the brush head is provided with brush hair, and the brush head is provided with a light transmission channel. The motor is provided with a motor output shaft which is connected with the brush head to drive the brush head to vibrate. One end of the brush rod is provided with a head part, the camera is arranged in the head part, and the camera is opposite to the light transmission channel. The motor is located the handle, is equipped with master control circuit board, wireless image transmission module and battery in the handle, and the camera is connected with master control circuit board electricity. According to the electric toothbrush, the camera is arranged in the electric toothbrush, and the internal state of the oral cavity shot by the camera can be transmitted to an external device by using the wireless image transmission module, so that a user can visually and clearly see the conditions in the oral cavity on the electronic equipment, teeth, tongues and gaps between the teeth in the oral cavity can be effectively cleaned, and the function of 'brushing while looking' is easy to realize.

Description

Electric tooth brush

Technical Field

The invention relates to the field of articles for daily use, in particular to an electric toothbrush.

Background

With the progress and development of society, people have gradually increased cleaning consciousness on individuals, for example, the oral cavity cleaning needs not only a common toothbrush, and the appearance of the electric toothbrush can better solve the oral cavity cleaning problem. The electric toothbrush makes the brush head generate high-frequency vibration through the quick rotation or vibration of the motor core, instantaneously decomposes the toothpaste into fine foam to deeply clean slits between teeth, and simultaneously, the vibration of the brush hair can promote the blood circulation of the oral cavity and has a massage effect on gum tissues.

In the related art, the electric toothbrush can increase the cleanliness of teeth through high-frequency vibration, but the mode is single often, and only has the characteristic of being electrified, so that the visual electric toothbrush with the function of camera shooting can see the cleaning condition of the teeth, but the electric toothbrush is too large in size due to excessive part structures, and the use experience of a user can also be influenced.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the electric toothbrush which has the characteristics of small and exquisite shape, stable structure and capability of realizing 'brushing while watching'.

An electric toothbrush according to an embodiment of the present invention includes: the toothbrush comprises a toothbrush head, wherein bristles are arranged on one side of the toothbrush head, and the toothbrush head is provided with a light transmission channel; the brush rod is provided with a head part at one end, and a first gap is formed between the head part and the brush head; the motor is provided with a motor output shaft, the end part of the motor output shaft penetrates through the end surface of the brush rod, and the motor output shaft is detachably connected with the brush head so as to drive the brush head to vibrate; the camera is arranged in the head part and is opposite to the light-transmitting channel; the handle, the motor is located in the handle, be equipped with master control circuit board, wireless image transmission module and battery in the handle, the camera with master control circuit board electricity is connected.

According to the electric toothbrush provided by the embodiment of the invention, the camera is arranged in the electric toothbrush, and the internal state of the oral cavity shot by the camera can be transmitted to the screen by using the wireless image transmission module, so that a user can more intuitively and clearly see the cleaning condition in the oral cavity on the screen without observing through the reflection of a mirror, the use experience of the user can be improved, the teeth, the tongue and the slits in the oral cavity can be effectively cleaned, and the 'brushing while looking' is realized.

In some embodiments, the brush head has a first clamping portion, the end portion of the motor output shaft has a second clamping portion, the first clamping portion and the second clamping portion are clamped, one of the first clamping portion and the second clamping portion is a clamping groove, and the other clamping portion is a clamping hook inserted into the clamping groove.

In some embodiments, the inner wall of the slot has a first positioning portion, the hook has a second positioning portion, one of the first positioning portion and the second positioning portion is a recessed portion, and the other is a protruding member that mates with the recessed portion.

In some embodiments, the first clamping portion is the clamping groove, the brush head is provided with a cover plate, the cover plate and the brush head define the clamping groove, and the protrusion member is arranged on the cover plate.

In some embodiments, the cover plate is a metal sheet, two opposite edges of the cover plate are turned over to form flanges, and the two flanges surround the periphery of the motor output shaft; the apron with the brush head is injectd the draw-in groove, protruding piece is located the apron, protruding piece is for having elastic arm.

In some embodiments, the second clamping portion and the rest of the output shaft of the motor form a step portion, the step portion is located in the first gap, and the brush head abuts against the step portion.

In some embodiments, the head component comprises: the head main body part is connected with the brush rod and is provided with a first through hole, and the camera is opposite to the first through hole; the head buckling piece is buckled with the head main body piece, a mounting cavity is defined between the head buckling piece and the head main body piece, the camera is arranged in the mounting cavity, and the head buckling piece is hermetically connected with the head main body piece; the lens cover is arranged on the camera and positioned in the first through hole, and the lens cover is in sealing contact with the inner wall of the first through hole.

In some embodiments, the inner wall of the mounting cavity has a second through hole, and a wire electrically connected with the main control circuit board of the camera passes through the second through hole.

In some embodiments, the handle is provided with a key and a plurality of indicator lights, and the key, the indicator lights and the main control circuit board are all electrically connected.

In some embodiments, the end of the brush rod has a mounting hole, the brush head is arranged in the mounting hole in a penetrating way, a sealing element is arranged between the brush head and the inner wall of the mounting hole, and the sealing element and the brush rod are integrally formed in an injection molding mode.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic view of a power toothbrush according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along A-A of FIG. 1;

FIG. 3 is a schematic structural view from another perspective of an electric toothbrush according to an embodiment of the present invention;

FIG. 4 is an enlarged, fragmentary, schematic view of FIG. 3;

FIG. 5 is a schematic perspective exploded view of the tail of a head of a power toothbrush in accordance with an embodiment of the present invention;

FIG. 6 is a schematic view of a construction of a head of a power toothbrush according to an embodiment of the present invention;

FIG. 7 is a schematic structural view from another perspective of a brushhead of a power toothbrush in accordance with an embodiment of the present invention;

FIG. 8 is a partial schematic structural view of an electric toothbrush according to an embodiment of the present invention;

fig. 9 is a partial sectional view of an electric toothbrush according to an embodiment of the present invention.

Fig. 10 is another structural schematic view of the electric toothbrush according to the embodiment of the present invention.

Reference numerals:

an electric toothbrush 100, a brush head 110, bristles 111, a light-transmitting channel 112,

A brush bar 120, a head member 121, a camera 1211, a first gap 122,

A motor 130, a motor output shaft 131,

A handle 150, a main control circuit board 151, a wireless image transmission module 152,

An image processing module and a wireless transmission module 1521,

Battery 153, card slot 160, hook 170, recess 180, protrusion 1131,

A cover plate 113, a step 190,

A head main body 1212, a first through hole 12121,

A head fastener 1213, a mounting cavity 12131, a second through hole 12132,

A lead 12133, a lens cover 12111,

A key 154, an indicator light 155,

Mounting hole 123, seal 1231, second gap 124.

Detailed Description

Embodiments of the present invention will be described in detail below, the embodiments described with reference to the drawings being illustrative, and the embodiments of the present invention will be described in detail below.

An electric toothbrush 100 according to an embodiment of the present invention will be described with reference to fig. 1 to 10.

As shown in fig. 1 to 10, an electric toothbrush 100 according to an embodiment of the present invention includes: a brush head 110, a brush rod 120, a motor 130, a camera 1211, and a handle 150.

Specifically, as shown in fig. 1, bristles 111 are provided at one side of a head 110, the bristles 111 are mounted on the head 110, and the bristles 111 perform a frictional motion against teeth to clean dirt from the teeth. It should be noted that the brush head 110 of the electric toothbrush 100 can vibrate under the driving of the motor 130, and when the brush head 110 vibrates, the bristles 111 vibrate along with the brush head 110. The vibration of the bristles 111 not only cleans the teeth but also brushes away food residues attached to the surfaces of the teeth; moreover, the brush 111 can promote the blood circulation of the oral cavity when vibrating, and has a massage effect on the gum tissue.

As shown in fig. 7, the brush head 110 has a light-transmitting channel 112, and the bristles 111 are circumferentially arranged around the light-transmitting channel 112 while avoiding the light-transmitting channel 112. On one hand, the bristles 111 can be prevented from blocking the light transmission channel 112, and the bristles 111 are prevented from blocking light rays in the light transmission channel 112; on the other hand, the bristles 111 can be distributed as uniformly as possible on the head 110, so that the cleaning effect of the electric toothbrush 100 can be improved.

As shown in figures 2-4, a head part 121 is arranged at one end of the brush rod 120, and the head part 121 is opposite to the brush head 110 and can enter the oral cavity. First gap 122 is formed between head part 121 and head 110, and first gap 122 can be used as a spacing space between head part 121 and head 110, so that the possibility of contact between head part 121 and head 110 is reduced, and the stability of head part 121 can be improved.

When a user uses a general electric toothbrush, the user cannot visually see the cleaning state of the teeth and cannot judge whether the teeth are cleaned. To solve the technical problem, as shown in fig. 2, a camera 1211 may be disposed in the electric toothbrush 100, the camera 1211 is disposed in the head member 121, the camera 1211 is opposite to the light-transmitting channel 112, the light-transmitting channel 112 provides a better field of view for the camera 1211 to photograph, so that the camera 1211 can photograph the image of the area near the bristles 111 through the light-transmitting channel 112 in a short distance, and the condition inside the oral cavity can be visually observed.

It should be noted that, by providing the first gap 122 between the head part 121 and the head 110, the transmission of the vibration on the head 110 to the head part 121 can be reduced, so that the stability of the head part 121 can be improved, a stable installation environment can be provided for the camera 1211, and the imaging effect of the camera 1211 can be improved, so that the user can clearly observe the internal situation of the oral cavity.

As shown in fig. 2, the motor 130 has a motor output shaft 131, an end of the motor output shaft 131 is inserted into an end surface of the brush rod 120, and the motor output shaft 131 is detachably connected to the brush head 110. The motor 130 can convert the electric energy into mechanical energy, so that the motor output shaft 131 can swing back and forth to drive the brush head 110 to vibrate, and the dirt on teeth can be effectively cleaned.

As shown in fig. 2 and 3, the motor 130 is disposed in the handle 150, and the interior space of the handle 150 is large, so that the motor 130 with a large volume can be installed in the handle 150, and the motor output shaft 131 with a small volume can be installed in the brush holder 120, thereby simplifying the structure of the brush holder 120 and facilitating the compact design of the electric toothbrush 100. The handle 150 is provided therein with a main control circuit board 151, a wireless image transmission module 152 and a battery 153. The main control circuit board 151 includes a motor driving module, a power management module, etc., and the main control circuit board 151 has the advantages of small volume, easy fixing of components, and convenient connection of lines.

In addition, the camera 1211 is electrically connected to the main control circuit board 151, so that the battery 153 disposed on the main control circuit board 151 can be used to supply power to the camera 1211, thereby enabling the electric toothbrush 100 to vibrate in an electrified manner and photograph the internal conditions of the oral cavity. It should be noted that the battery 153 having a large capacity may be used, so that the cruising ability of the electric toothbrush 100 may be improved, and the service life of the electric toothbrush 100 may be increased.

As shown in fig. 2, the wireless image transmission module 152 includes an image processing module and a wireless transmission module 1521, the center of the wireless image transmission module 152 may be disposed at the middle joint between the brush bar 120 and the handle 150, and the wireless image transmission module 152 entirely penetrates through the brush bar 120 and the handle 150, and a portion of the wireless image transmission module is disposed in the handle 150. The internal state of the oral cavity shot by the camera 1211 can be transmitted to a video receiving device such as a mobile phone, a flat panel electric energy and a display screen by a wireless image transmission module 152 through a 3G/4G/5G network, WIFI, microwave and the like, so that a user can check the cleaning condition of teeth in real time and can brush teeth while brushing teeth.

According to the electric toothbrush 100 of the embodiment of the invention, the camera 1211 is arranged in the electric toothbrush 100, and the internal state of the oral cavity shot by the camera 1211 can be transmitted to the external equipment by using the wireless image transmission module 152, so that a user can visually and clearly see the condition in the oral cavity on the electronic equipment, teeth, tongues and gaps between the teeth in the oral cavity can be effectively cleaned, and the function of brushing while looking is easy to realize.

According to an embodiment of the present invention, referring to fig. 2, the brush head 110 has a first clamping portion, the motor output shaft 131 has a second clamping portion, and the first clamping portion and the second clamping portion are clamped, so that the motor output shaft 131 is clamped with the brush head 110 to drive the brush head 110 to vibrate. Further, one of the first clamping portion and the second clamping portion is a clamping slot 160, and the other is a hook 170 inserted into the clamping slot 160. The connection mode of the structure is simple and convenient to install and firm in fixation, other connection methods such as threaded connection, clamping and pasting are avoided, the cost can be saved, the space is saved, the size of the electric toothbrush 100 is small, and the use experience of a user cannot be influenced.

In an example of the present invention, as shown in fig. 5 and 6, the inner wall of the slot 160 has a first positioning portion, the hook 170 has a second positioning portion, one of the first positioning portion and the second positioning portion is a concave portion 180, and the other one is a convex portion 1131 matching with the concave portion, so that the hook 170 and the slot 160 can be tightly connected together, thereby connecting the brush head 110 and the brush rod 120, presenting an overall shape of the electric toothbrush 100, and the structure is more stable and sturdy.

Further, as shown in fig. 5, the first clamping portion is a clamping groove 160, the brush head 110 is provided with a cover plate 113, the cover plate 113 and the brush head 110 define the clamping groove 160, and the protrusion 1131 is provided on the cover plate 113. As shown in fig. 4 and 5, the cover plate 113 is flat, and two opposite edges of the cover plate 113 are folded to form flanges, and the two flanges surround the outer periphery of the motor output shaft 131. The cover plate 113 is embedded in the brush head 110, and the cover plate 113 and the brush head 110 surround the periphery of the motor output shaft 131 and fix the motor output shaft 131. Furthermore, a protrusion 1131 is disposed on the surface of the cover plate 113 facing the brush head 110, and the protrusion 1131 is in matching engagement with the recess 180 at the end of the motor output shaft 131, so that the cover plate 113, the end of the motor output shaft 131 and the protrusion 1131 can be fastened together. The design of the connection structure of the brush head 110 can make the motor 130 more directly drive the brush head 110 to vibrate, i.e. the vibration of the motor 130 can be smoothly transmitted to the brush head 110, and the high-frequency vibration of the brush head 110 can not cause the brush head 110 to be separated from the brush bar 120, thereby making the structure of the electric toothbrush 100 more stable.

In one example of the present invention, as shown in fig. 5 and 6, the cover plate 113 may be a metal sheet, and the cover plate 113 made of metal makes the structure more robust. The protruding member 1131 may be an elastic arm, and when the motor output shaft 131 drives the brush head 110 to generate high frequency vibration, the protruding member 1131 with elasticity will swing along with the motor output shaft, so that the electric toothbrush 100 is more flexible in operation, when the user stops brushing teeth immediately and turns off the electric toothbrush 100, if the high frequency vibration of the brush head 110 stops immediately, the electric toothbrush 100 will be damaged in long-term use, and the elastic protruding member 1131 can play a role in buffering, thereby reducing damage to the electric toothbrush 100, and prolonging the service life of the electric toothbrush 100.

Further, as shown in fig. 5 and 6, the cover plate 113 may be processed first, and the cover plate 113 is also placed in a mold to be integrally injection molded during the injection molding process of the brush head 110, and the cover plate 113 is embedded inside the brush head 110 after the molding. The flanges at both sides of the cover plate 113 are provided with a plurality of through holes for better integration with the brush head 110. The upper, left and right surfaces of the tail of the brush head 110 can be closely attached to the motor output shaft 131, and the protruding part 1131 is attached to the motor output shaft 131. The protruding member 1131 can push the motor output shaft 131 to make the motor output shaft 131 closely contact with the brush head 110, and in addition, the protruding member 1131 corresponds to the concave part 180 of the motor output shaft 131 to make the motor output shaft 131 not easy to be pulled out from the tail of the brush head 110 due to the resistance.

In an example of the present invention, as shown in fig. 2, the second engaging portion and the rest of the motor output shaft 131 form a step portion 190, and the step portion 190 is a transition structure and has a function of fixing the brush head 110. And the step part 190 is positioned in the first gap 122, the brush head 110 is abutted against the step part 190, so that the connection between the brush head 110 and the motor output shaft 131 is firmer. In some embodiments, the motor output shaft 131 is removably coupled to the brush head 110. The brush head 110 can be detached and replaced after a long time, and the electric toothbrush 100 does not need to be replaced, and the brush head 110 can be replaced with a new one for continuous use. The brush head 110 has various styles, such as a standard type, a sensitive type, a cleaning type and the like, and can be used by selecting a brush head 110 suitable for a user to be installed on the electric toothbrush 100 according to the requirements of the user.

According to one embodiment of the present invention, as shown in fig. 7-9, the head part 121 may include a head body member 1212, the head body member 1212 being connected to the brush bar 120 and being opposite to the brush head 110. The head main body 1212 has a first through hole 12121, and the camera 1211 is opposed to the first through hole 12121. The head unit 121 further includes a head fastener 1213, the head fastener 1213 is fastened to the head unit 1212 and tightly fastened to the head unit 1212, a mounting cavity 12131 is defined between the head fastener 1213 and the head unit 1212, and the camera 1211 is disposed in the mounting cavity 12131. The first through hole 12121 is provided, so that light can enter the camera 1211 through the first through hole 12121, thereby imaging the internal environment of the oral cavity and facilitating the user to visually observe the internal condition of the oral cavity.

In one example of the present invention, as shown in fig. 8, the inner wall of the mounting cavity 12131 has a second through hole 12132, and a lead 12133 electrically connecting the camera 1211 with the main control circuit board 151 is inserted through the second through hole 12132. The conducting wire 12133 can be FPC flexible flat cable, FPC flexible flat cable is easy to produce, the interval is accurate, the degree of goodness of fit of inserting is good. The second through hole 12132 provides a connection path for the camera 1211 and the wire 12133, the wire 12133 can transmit power to the camera 1211, and the wire 12133 can transmit the signal of the camera 1211 back to the wireless image transmission module 152 in the handle 150 while supplying power to the camera 1211, so as to process the signal. The camera 1211 can normally perform a photographing operation when the user uses the electric toothbrush 100.

In one example of the present invention, as shown in fig. 9, the head fastener 1213 is hermetically connected to the head body 1212, so that when the electric toothbrush 100 is used, water drops can be prevented from entering the mounting cavity 12131, thereby improving the waterproof performance of the electric toothbrush 100. In addition, when the user does not use the electric toothbrush 100, the dust can be shielded from the outside and the dust can not be accumulated in the inside of the mounting cavity 12131.

In one example of the present invention, as shown in fig. 9, the electric toothbrush 100 may further include a lens cover 12111 having light transmission, the lens cover 12111 being disposed on the camera 1211, the lens cover 12111 being disposed in the first through hole 12121. The lens cover 12111 is a transparent member, and the transparent lens cover 12111 can make the image of the inside of the oral cavity captured by the camera 1211 clearer. The lens cover 12111 may be made of PC, acryl, resin, or glass. The lens cover 12111 is in sealing contact with the inner wall of the first through hole 12121 to prevent dust, water and toothpaste from entering the mounting cavity 12131, so as to transmit light, protect the camera 1211 and prevent water.

According to an embodiment of the present invention, as shown in fig. 1, the handle 150 is provided with a key 154 and a plurality of indicator lights 155, and the key 154 and the indicator lights 155 are electrically connected to the main control circuit board 151. For example, as shown in fig. 1, the plurality of indicator lights 155 may be five in number and may be provided below the key 154; for another example, as shown in fig. 10, the plurality of indicator lights 155 may be three in number and may be disposed above the key 154. Button 154 can turn power toothbrush 100 on and off and also switch functional modes. The plurality of indicator lights 155 can display the functional status of the electric toothbrush 100, and the user can select a mode suitable for the user according to the preference of the user, thereby improving the user experience. In the description of the present invention, "a plurality" means two or more.

According to an embodiment of the present invention, referring to fig. 8 and 9, the end of the brush rod 120 has a mounting hole 123, the motor output shaft 131 is inserted into the mounting hole 123, and a sealing member 1231 is provided between the brush head 110 and the inner wall of the mounting hole 123. The motor output shaft 131 and the mounting hole 123 are fixed by a sealing member 1231 and tightly connected, and the sealing member 1231 can prevent water from entering the electric toothbrush 100, thereby avoiding the problems of electric shock and the like.

In one example of the present invention, referring to fig. 9, the sealing member 1231 may be a soft rubber member and have a waterproof property. Furthermore, the soft rubber part is silica gel, TPE, TPU, TPR, TPV or TPEE, and the materials have the excellent performances of high elasticity, aging resistance and oil resistance of the traditional cross-linked vulcanized rubber, and simultaneously have the characteristics of convenient processing and wide processing mode of common plastics. While reducing the cost of the electric toothbrush 100, it is possible to effectively prevent water from entering the electric toothbrush 100, thereby protecting the internal structure of the electric toothbrush 100, preventing electric shock, and increasing the service life.

In an example of the present invention, as shown in fig. 9, the sealing member 1231 is integrally injection-molded with the brush rod 120, the sealing member 1231 is integrally combined with the brush rod 120 by injection molding, gluing, interference, etc., a circular hole with a diameter smaller than that of the motor output shaft 131 is formed at the protruding portion of the sealing member 1231, and the motor output shaft 131 passes through the circular hole to be in interference fit with the sealing member 1231, thereby preventing foreign matters, dust or water from entering the electric toothbrush 100.

Meanwhile, the sealing member 1231 is arranged to isolate the vibration of the motor output shaft 131, so that the vibration of the brush head 110 and the motor output shaft 131 is prevented from being transmitted to the brush rod 120, and the stable shooting of the camera 1211 in the brush rod 120 is not affected by the vibration. In this embodiment, the waterproof structure is designed to simplify the structure of the portion of the electric toothbrush 100 that protrudes into the oral cavity, and the size of the brush bar 120 can be kept small even if the motor output shaft 131, the camera 1211, the wire 12133, the waterproof structure, etc. are included.

According to an embodiment of the present invention, referring to fig. 2, the length of the end surface of the motor output shaft 131 protruding from the brush bar 120 is equal to or greater than 40 mm. In other words, the length of the end face of the motor output shaft 131 protruding out of the brush bar 120 is L1, wherein L1 is more than or equal to 40 mm. Therefore, the motor output shaft 131 can enter the oral cavity to perform reciprocating swing, vibration and other movements, so that the brush head 110 can be driven to clean a deeper position in the oral cavity.

According to an embodiment of the present invention, referring to fig. 4, the brush head 110 has a second gap 124 with the end surface of the brush bar 120, and the distance of the second gap 124 is 0.3-10 mm. In other words, the second gap 124 has a distance L2, where L2 is 0.3mm 10 mm. Thus, by providing the second gap 124, it is possible to prevent high frequency vibrations from adversely affecting the brush bar 120 when the brush head 110 is vibrating.

As shown in FIGS. 2-4, the diameter of the brush rod 120 is 11mm or less, in other words, the diameter of the brush rod 120 is d1, and d1 is 11mm or less. Furthermore, the diameter of the part of the brush rod 120 close to the bristles 111 is less than or equal to 11mm, in other words, the diameter of the part of the brush rod 120 close to the bristles 111 is d1, and d1 is less than or equal to 11 mm. The brush rod 120 can enter the oral cavity together with the head part 121, and the brush rod 120 with a smaller diameter can flexibly move in the oral cavity, so that the brush head can be driven to flexibly and effectively clean each corner in the oral cavity, and the cleaning effect of the electric toothbrush 100 can be improved. A first gap 122 is formed between the head part 121 and the brush head 110, the first gap 122 is 0.3-10mm, in other words, the first gap 122 is a, wherein a is more than or equal to 0.3mm and less than or equal to 10 mm. First gap 122 may act as a spacing space between head member 121 and head 110, reducing the likelihood of contact between head member 121 and head 110, which may improve the stability of head member 121.

According to one embodiment of the invention, referring to figure 4, head 110 is in juxtaposed relationship with head member 121, the distance between the free ends of bristles 111 and the surface of head member 121 on the side facing away from head 110 being less than or equal to 25 mm. In other words, the distance between the free ends of the bristles 111 and the surface of the head part 121 on the side facing away from the brush head 110 is L3, where L3 ≦ 25 mm. Further, the distance between the surface of head part 110 on the side facing away from head part 121 and the surface of head part 121 on the side facing away from head 110 is 15mm or less. In other words, the distance between the surface of the head part 110 facing away from the head part 121 and the surface of the head part 121 facing away from the head part 110 is L4, wherein L4 is 15mm or less. The dimensions of the head 110 and the head part 121 within this range are small in volume, so that the bristles 111 can contact the respective surfaces of the teeth, and the dirt on the teeth can be effectively cleaned.

According to one embodiment of the present invention, as shown in FIG. 9, the height of the camera 1211 is 2-8 mm. In other words, the height of the camera 1211 is h, wherein h is greater than or equal to 2mm and less than or equal to 8 mm. The diameter of the camera 1211 is 2-8 mm. In other words, the diameter of the camera 1211 is d, wherein d is greater than or equal to 2mm and less than or equal to 8 mm. The camera 1211 may be a micro-camera 1211, which is sized within the range to be suitable for observing the cleaning state inside the oral cavity, and the micro-camera 1211 is small in size and does not occupy a large space, so that the head part 121 of the electric toothbrush 100 is not too bulky to affect the user experience. The size of the camera 1211 may be designed according to a human body, and various types of the camera 1211 may be provided according to the size of the mouth of a child or an adult, so that users of all ages can use the electric toothbrush 100.

According to one embodiment of the present invention, as shown in fig. 1, the cross-section of the light transmission channel 112 has a shape of a circle, an ellipse, a polygon, or the like. The user can choose according to his own preference, the shape of the cross section of the light-transmitting channel 112 can influence the placement position of the bristles 111, and the bristles 111 are arranged around the cross section of the light-transmitting channel 112 to ensure that the camera 1211 is not shielded by the bristles 111, so that the cleaning condition inside the oral cavity can be observed more clearly and intuitively.

In the description of the present invention, it is to be understood that the terms "center", "length", "width", "up", "down", "left", "right", "inside", "outside", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description herein, references to the description of "one embodiment," "some embodiments," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An electric toothbrush, comprising:

the toothbrush comprises a toothbrush head, wherein bristles are arranged on one side of the toothbrush head, and the toothbrush head is provided with a light transmission channel;

the brush rod is provided with a head part at one end, and a first gap is formed between the head part and the brush head;

the motor is provided with a motor output shaft, the end part of the motor output shaft penetrates through the end surface of the brush rod, and the motor output shaft is detachably connected with the brush head so as to drive the brush head to vibrate;

the camera is arranged in the head part and is opposite to the light-transmitting channel;

the handle, the motor is located in the handle, be equipped with master control circuit board, wireless image transmission module and battery in the handle, the camera with master control circuit board electricity is connected.

2. The electric toothbrush according to claim 1, wherein the brush head has a first clamping portion, the end of the motor output shaft has a second clamping portion, the first clamping portion and the second clamping portion are clamped, one of the first clamping portion and the second clamping portion is a clamping groove, and the other clamping portion is a clamping hook inserted into the clamping groove.

3. The electric toothbrush according to claim 2, wherein the inner wall of the engaging groove has a first positioning portion, the engaging hook has a second positioning portion, and one of the first positioning portion and the second positioning portion is a recessed portion and the other is a protruding member that fits into the recessed portion.

4. The electric toothbrush according to claim 3, wherein the first catching portion is the catching groove,

the brush head is provided with a cover plate, the cover plate is a metal sheet, two opposite edges of the cover plate are turned over to form turned edges, and the two turned edges surround the periphery of the output shaft of the motor;

the apron with the brush head is injectd the draw-in groove, protruding piece is located the apron, protruding piece is for having elastic arm.

5. The electric toothbrush according to claim 2, wherein the second engaging portion forms a step portion with the rest of the output shaft of the motor, the step portion is located in the first gap, and the brush head abuts against the step portion.

6. The electric toothbrush of claim 1, wherein the head member comprises:

the head main body part is connected with the brush rod and is provided with a first through hole, and the camera is opposite to the first through hole;

the head buckling piece is buckled with the head main body piece, a mounting cavity is defined between the head buckling piece and the head main body piece, the camera is arranged in the mounting cavity, and the head buckling piece is hermetically connected with the head main body piece;

the lens cover is arranged on the camera and positioned in the first through hole, and the lens cover is in sealing contact with the inner wall of the first through hole.

7. The electric toothbrush according to claim 6, wherein the inner wall of the mounting cavity has a second through hole, and a lead electrically connecting the camera and the main control circuit board is inserted into the second through hole.

8. The electric toothbrush according to claim 1, wherein the handle is provided with a key and a plurality of indicator lights, and the key, the indicator lights and the main control circuit board are all electrically connected.

9. The electric toothbrush of claim 1, wherein the end of the shaft has a mounting hole, the brush head is disposed through the mounting hole, and a sealing member is disposed between the brush head and the inner wall of the mounting hole.

10. The electric toothbrush of claim 9, wherein the sealing member is a soft plastic member, and the sealing member is integrally injection molded with the stem.