CN213217810U - Electric tooth brush - Google Patents

Abstract

The utility model discloses an electric toothbrush, including the brush head and can dismantle the handle of being connected with the brush head, the handle includes shell, core assembly, charging seat, subassembly and shield that charges, the shell has the inner chamber, core assembly sets up in the shell cavity, core assembly expose in shell cavity's one end with brush head is connected, the charging seat stretch into to the shell cavity and with the other end of core is connected, the subassembly that charges is fixed on the charging seat and be connected with core assembly electricity, the shield includes the soft glue portion, the shield pass through the soft glue portion with sealing connection can be dismantled to the shell, have charge fast, the commonality is strong, waterproof performance is good and advantages such as simple process, low cost.

Description

Electric tooth brush

Technical Field

The utility model relates to an oral cavity cleaning appliance field especially relates to an electric toothbrush.

Background

The electric toothbrush mainly generates high-frequency vibration to the toothbrush head through the quick rotation or vibration of the electric motor, and the toothpaste is instantly decomposed into fine foam to deeply clean teeth gaps. For the electric toothbrush that wireless induction charges, adopt directly to fill rechargeable electric toothbrush have the commonality strong, charge characteristics such as fast, receive more and more that consumers like. At present, establish the charging seat on electric toothbrush's base usually, in order to avoid the water droplet to get into the charging seat and flow into electric toothbrush's handle from the charging seat in, need a better waterproof structure that charges of leakproofness, have among the prior art to realize sealed waterproof technical scheme through the encapsulating technology, but the technology is complicated, and the cost is higher. It is required to develop a direct charging structure of an electric toothbrush with good waterproof performance, simple process and low cost.

Disclosure of Invention

For solving the above-mentioned shortcoming of electric toothbrush under the traditional mode, the utility model provides a charge fast, the commonality is strong, waterproof performance is good and simple process, low cost's electric toothbrush.

For realizing the purpose of the utility model, the technical scheme of adoption is:

the utility model provides an electric toothbrush, includes the brush head and can dismantle the handle of being connected with the brush head, the handle includes shell, core assembly, charging seat, subassembly and shield that charges, the shell has the inner chamber, core assembly sets up in the shell cavity, core assembly expose in the one end of shell cavity with brush head is connected, the charging seat stretches into extremely the shell cavity and with the other end of core is connected, the subassembly that charges is fixed on the charging seat and with the core assembly electricity is connected, the shield stretch into extremely in the shell cavity and with sealing connection can be dismantled to the shell.

Be different from the design of shield direct mount on the charging seat among the prior art, the utility model provides a technical scheme, the shield can dismantle sealing connection with the handle shell to make the shield not only can seal, prevent dust the interface that charges, can also seal the gap of handle shell bottom, realize dual waterproof with the sealing connection structure of charging seat and handle together, improve the holistic waterproof grade of electric toothbrush. The user pulls down the shield from the handle when needs charge to the interface that charges exposes and is connected with external power, thereby charges the battery. When not needing to charge, the shield can seal dustproof to the interface that charges to prevent dust or foreign matter entering the interface that charges and in influencing the normal use of the interface that charges.

Furthermore, the shield includes soft glue portion, soft glue portion includes lid and spliced pole, be equipped with the connecting hole on the charging seat, the spliced pole is worn to establish the connecting hole is in order to connect the shield with the charging seat.

The shield passes through the soft glue portion and can dismantle sealing connection with handle shell, in addition, is connected to the charging seat with the shield, can reduce the user and pull down the risk that the back lost easily with the shield when charging.

Further, the dust cover further comprises a hard rubber part, and the soft rubber part is fixed on the hard rubber part in a secondary injection molding mode.

Fix the flexible glue portion of shield on ebonite portion through secondary injection moulding, can prevent flexible glue portion deformation, can realize the sealed to electric toothbrush bottom better.

Further, the dust cover portion exposes the housing cavity.

The dustproof cover is exposed out of the inner cavity of the shell, so that a user can conveniently detach the dustproof cover from the handle through the part of the dustproof cover exposed out of the shell when needing to be charged.

Further, the charging assembly comprises a charging circuit board and a charging interface.

Further, be equipped with the through-hole that charges on the charging seat, the handle still includes waterproof circle, the subassembly that charges passes through waterproof circle is installed on the medial surface of the through-hole that charges, can avoid water to follow the subassembly that charges with inside gap inflow handle between the charging seat.

Further, the medial surface of charging seat is followed the through-hole that charges is equipped with the boss all around, the boss with the medial surface of through-hole that charges forms the trench, the trench with the interface shape phase-match that charges, the outside face of the interface that charges is equipped with the slot that charges towards the one end of charging seat, the slot that charges pass through waterproof circle with trench sealing connection.

Further, the movement assembly is connected with the shell in a buckling mode so as to be installed in the inner cavity of the shell.

Further, be equipped with spacing post on the charging seat, be equipped with the buckle on the spacing post, charging circuit board has the step face, the buckle card is held on the step face, in order to incite somebody to action charging circuit board joint is fixed in on the spacing post.

Further, the charging seat is followed the spacing arm that extends out in spacing post both sides still, spacing post with spacing arm has restricted charging circuit board's circumferential motion, the buckle has restricted charging circuit board's axial motion, thereby guarantee charging assembly with the steadiness of being connected of charging seat.

The beneficial effects of the utility model are that, through setting up the shield including the soft portion of gluing, the shield passes through soft portion of gluing and handle shell sealing connection, so that the shield not only can seal the interface that charges, it is dustproof, the gap of handle shell bottom can also be sealed, the shield, the equal sealing connection of charging seat and handle, can realize dual waterproof, the holistic waterproof grade of electric toothbrush has been improved, the risk of the control circuit damage that leads to because of water from electric toothbrush bottom inflow handle inside has been reduced, electric toothbrush's life has been promoted.

Drawings

The present invention will be further explained with reference to the accompanying drawings.

Fig. 1 is a schematic perspective view of an embodiment of the present invention.

Fig. 2 is a schematic sectional view of the electric toothbrush of fig. 1 taken along line a-a.

Fig. 3 is a schematic cross-sectional view of another embodiment of the present invention.

Fig. 4 is a partially enlarged schematic view of a portion a in fig. 2.

Fig. 5 is a partially enlarged structural view at B in fig. 3.

Fig. 6 is a partially enlarged structural view at C in fig. 3.

Fig. 7 is an exploded view of an embodiment of the present invention.

Fig. 8 is a schematic perspective view of a charging assembly according to an embodiment of the present invention.

Fig. 9 is a schematic perspective view of a charging seat according to an embodiment of the present invention.

Fig. 10 is a schematic perspective view of a dust cap according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through the communication between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1-10, there is shown a power toothbrush 100 comprising a handle 10 and a head 20; wherein the brush head 20 and the handle 10 are detachably connected. The head 20 generally includes an elongated neck portion connected to a handle and a head portion having bristles for cleaning the teeth. The handle 10 includes a housing 11 and a cartridge assembly 12. In the present embodiment, the housing 11 has a hollow cavity, and the movement assembly 12 is mounted in the hollow cavity of the housing 11. The movement assembly 12 comprises a movement bracket 121, a motor 122, a battery 123 and a main circuit board 124, wherein the movement bracket 121 comprises a first bracket 1211 and a second bracket 1212, and the first bracket 1211 and the second bracket 1212 can be fixedly connected through a screw 125. The motor 122 and the battery 123 are respectively fixed in two inner cavities of the movement bracket 121, and the main circuit board 124 is fixed on the outer side surface of the first bracket 1211. The motor 122 comprises a motor body 1221 and a driving shaft 1222, wherein one end of the driving shaft 1222 extends out of the inner cavity of the housing 11 and is detachably connected with the brush head 20. In the field, there are various embodiments for the matching of the brush head and the driving shaft, which belong to the prior art and are not described in detail. Both the motor 122 and the battery 123 are electrically connected to a main circuit board, which may be a PCBA board.

The core support 121 is provided with a clamping piece 1213, the inner side of the handle housing 11 is correspondingly provided with a clamping platform 111 matched with the clamping piece 1213, and the clamping piece 1213 is clamped on the clamping platform 111 to fix the core assembly 12 in the inner cavity of the housing 11. The top of the movement bracket 121 is hermetically connected with the shell 11 through a first sealing ring 13. The electric toothbrush 100 is further provided with a first sealing member 14, the first sealing member 14 includes a cylindrical portion 141 for sealing the motor 122 and the movement holder 121, and a circular table portion 142 for sealing the movement holder 121 and the housing 11, and the motor 122 and the housing 11, and the cylindrical portion 141 and the circular table portion 142 may be integrally formed. That is, the first sealing member 14 can simultaneously seal the gap between the housing 11, the movement bracket 121 and the motor 122, so as to prevent water droplets from flowing into the handle 10 of the electric toothbrush 100 from the top end of the handle, and further prevent the movement assembly 12 and the charging assembly inside the handle from being damaged. The first sealing element 14 can be made of rubber, silica gel, plastic and other common flexible materials, and besides the sealing and waterproof effects, the first sealing element 14 can reduce the vibration transmitted to the handle 10, so that the user experience is better. The electric toothbrush 100 is further provided with a plastic ring 15, which is sleeved on the portion of the driving shaft 1222 exposed out of the handle 10, so that the shape of the driving shaft is better matched with the shape of the brush head 20, and the stability of the connection structure of the brush head 20 and the handle 10 is enhanced.

The housing 11 may be injection molded of a material having a light shielding function. Or the shell 11 is a transparent or semitransparent shell, and then the surface of the shell is coated with a coating layer, so that the shading effect is achieved. The surface of the main circuit board 124 is uniformly provided with a plurality of patch type high-brightness LED lamps which independently emit light and do not interfere with each other, and the shell 11 is provided with corresponding openings, so that the light of the LED lamps can be emitted out of the handle and seen by a user. The main circuit board 124 is further provided with a switch for turning on/off the electric toothbrush, a portion of the housing corresponding to the switch is provided with a key through hole 112, and the key through hole 112 is provided with a switch button 113. The mode of forming the second sealing element 114 in the shell by injection molding is adopted, the second sealing element 114 covers the LED lamp hole and the switch through hole on the shell, the second sealing element 114 is connected with the shell into a whole, the aim of no gap between the second sealing element 114 and the shell is achieved, the internal sealing of the handle 10 is realized, the phenomenon that external liquid penetrates into the handle 10 through a switch button and a gap at the display panel is avoided, the motor and electronic components in the handle 10 are effectively protected, and the safety and the reliability are high.

The electric toothbrush 100 further includes a charging seat 16, and the charging seat 16 is hermetically connected to the handle housing 11 through a second sealing ring 161. The charging seat is provided with a charging assembly 17, the charging assembly 17 can comprise a charging circuit board 171 and a charging interface 172, and the charging assembly 17 and the battery 123 are electrically connected with the main circuit board 124 on the movement assembly 12, so that the battery 123 is charged. The charging stand 16 is provided with a charging through hole 162, and the charging assembly 17 is installed on the inner side surface of the charging through hole 162 through the waterproof ring 18. The medial surface of charging seat 16 is equipped with boss 163 along charging through-hole 162 all around, boss 163 forms trench 164 with the medial surface of charging through-hole 162, trench 164 and the interface 172 shape phase-match that charges, the outside face of the interface 172 that charges is equipped with the slot 173 that charges towards the one end of charging seat 16, waterproof circle 18 is installed on the slot 173 that charges, the slot 173 that charges of interface passes through waterproof circle 18 and the trench 164 sealing connection on the charging seat, interface 172 and the through-hole 162 phase-match UNICOM that charges, so can avoid the water droplet to get into core assembly 12 from the gap between charging assembly 17 and the charging seat 16. The charging interface 172 can be a USB Type-C interface, which has the characteristics of excellent power transmission capability, capability of enabling a USB to be inserted quickly, high universality and the like.

In order to make the connection between the charging assembly 17 and the charging base 16 more stable, the charging base 16 can be provided with a position-limiting post 165, and the charging circuit board 171 can be fixed on the position-limiting post 165 of the charging base 16 in a clamping manner. So set up, the installation and the dismantlement of the subassembly 17 of conveniently charging. Furthermore, a buckle 1651 is arranged on the limiting column 165, the charging circuit board 171 is provided with a step surface 1711, and the buckle 1651 is clamped on the step surface 1711, so that the charging circuit board 171 is clamped and fixed on the limiting column 165.

Further, the buckle 1651 has an inclined surface 1652, when the charging circuit board is mounted on the position-limiting post 165, the bottom of the charging circuit board 171 is abutted against the buckle inclined surface 1652 of the position-limiting post 165, and then the charging circuit board 171 is pushed downwards until the bottom surface of the buckle 1651 is clamped on the step surface 1711, so that the charging circuit board 171 can be fixed on the position-limiting post 165, and the mounting mode is very simple and easy to implement. The charging circuit board may be a PCBA board. Buckle 1651 can adopt integrated into one piece's mode to set up on spacing post 165, is favorable to promoting buckle 1651 and spacing post 165's joint strength. The number of the step surfaces 1711 is two in order to effectively fix the charging circuit board 171. The two step surfaces 1711 are oppositely arranged. Accordingly, the number of snaps 1651 is two. The two clasps 1651 are oppositely arranged. Each catch 1651 is retained on its corresponding step surface 1711. With such an arrangement, the charging circuit board 171 and the position-limiting post 165 can be clamped more firmly. Further, the charging base 16 has a limiting wall 166 extending from both sides of the limiting post 165, the limiting post 165 and the limiting wall 166 limit the circumferential movement of the charging circuit board 171, and the fastener 1651 limits the axial movement of the charging circuit board 171, so that the charging circuit board 171 is firmly connected to the charging base 16.

Further, the charging base 16 is provided with a mounting hole 167 for a screw to pass through. The charging seat 16 and the movement support 121 are connected by threads, and the connection mode can overcome the manufacturing tolerance, so that the charging seat 16 and the movement support 121 are connected more stably, and the charging component 17 and the main circuit board 124 are ensured to be connected stably.

Furthermore, a gas-permeable column 168 is disposed on the charging base 16 and is communicated with the outside, and the gas-permeable column 168 is used for discharging the gas generated during charging the battery to the outside. The air-permeable column 168 is a hollow column with holes on the front and back, an air-permeable cover 1681 is arranged on the top end of the air-permeable column 168, and an air-permeable hole 1682 is arranged on the air-permeable cover. The exhaust hole 1682 is used to exhaust gas generated during charging of the battery to the outside. The breathable cover 1681 can be a soft rubber material and is directly sleeved on the breathable column 168; or the ventilation cover 1681 is made of hard glue material and is fixed on the ventilation column 168 through ultrasound. The charging dock 16 also includes a waterproof breathable membrane 1683 disposed on the breathable cover 1681. The waterproof breathable membrane 1683 is used to seal the vent hole 1682 so that gas generated during battery charging flows out of the vent hole 1682 and water drops are prevented from entering the inside of the handle through the vent hole 1682.

Further, the electric toothbrush 100 further comprises a dust cover 19, and the dust cover 19 can be connected to the charging seat 16, so that the risk that the user is easily lost after removing the dust cover 19 during charging can be reduced. The dust cap 19 extends into the inner cavity 115 of the housing, the dust cap 19 comprises a soft rubber part, and the dust cap 19 is detachably and hermetically connected with the housing 11 through the soft rubber part. The soft rubber part comprises a cover body 191 and a connecting column 192. The charging base 16 is provided with a connection hole 169. The connecting post 192 is inserted through the connecting hole 169 into the gas permeable post 168. The connecting column 192 can move axially along the handle relative to the connecting hole 169 to make the cover 191 abut against the charging stand 16. The connecting column 192 includes a cylindrical body 1921, a tip 1922 and a limiting portion 1923, the cross section of the tip 1922 is smaller than that of the connecting hole 169, so that the tip 1922 can easily pass through the connecting hole 169 and enter the air-permeable column 168, the connecting column 192 continues to move upwards, the limiting portion 1923 is extruded and deformed to pass through the connecting hole 169, the cylindrical body 1921 also enters the air-permeable column 168, and the cover 191 is abutted against the charging base 16. When the dust cover 19 is detached from the handle 10, the cross-sectional area of the position-limiting portion 1923 is larger than the connecting hole 169, and the position-limiting portion 1923 abuts against the bottom of the charging base 16, so that the dust cover 19 is prevented from falling off from the charging base 16. The connection post 192 is an elastic member to smoothly pass through the connection hole 169. The cover body 191 is used for sealing and preventing dust of the charging interface. Further, the cover 191 is an elastic member. The cover 191 is elastically pressed against the inner wall of the handle housing 11. Thus, the cover 191 is fixed in the inner cavity of the handle case by elastic deformation thereof. The cover body 191 is made of soft rubber and is connected with the handle shell 11 in a sealing way. Through the cooperation of shield 19, second sealing washer 161 and handle shell 11, realize dual waterproof to handle 10 bottom, avoid external liquid to get into in core assembly 12 through handle 10 bottom.

Further, the dust cover 19 further includes a hard rubber portion 193, and the cover body 191 made of soft rubber material is fixed on the hard rubber portion 193 by secondary injection molding. This prevents the cover 191 from being deformed, and the bottom of the electric toothbrush can be sealed more effectively.

Further, the dust cap 19 may be partially exposed to the interior of the housing to facilitate removal of the dust cap 19 from the handle 10 by a user. When the electric toothbrush 100 is not charged, the dust cover 19 can seal and prevent dust on the charging interface 172, so as to prevent dust or foreign matters from entering the charging interface and influencing the normal use of the charging interface. When the electric toothbrush 100 needs to be charged, the dust cap 19 can be detached from the handle 10 to expose the charging interface and connect with an external power source, thereby charging the battery 123.

In another embodiment, the charging circuit board 171 is eliminated, the charging interface 172 is directly disposed on the main circuit board 124 (not shown), and then the charging interface 172 is mounted on the charging dock 16. Effectively saves parts, and has simpler and more convenient structure and manufacture.

In the description herein, references to the description of the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like 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. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is a more detailed description of the present invention that is presented in conjunction with specific embodiments, and it is not to be understood that the specific embodiments of the present invention are limited to these descriptions. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement.

Claims (10)

1. An electric toothbrush, which comprises a brush head and a handle detachably connected with the brush head, and is characterized in that,

the handle includes shell, core assembly, charging seat, subassembly and shield charge, the shell has the inner chamber, core assembly sets up in the shell cavity, core assembly expose in the one end of shell cavity with brush first connection, the charging seat stretch into extremely the shell cavity and with the other end of core is connected, the subassembly that charges is fixed on the charging seat and with the core assembly electricity is connected, the shield stretch into extremely in the shell cavity with sealing connection can be dismantled to the shell.

2. The electric toothbrush according to claim 1,

the dustproof cover comprises a soft rubber part, and the soft rubber part comprises a cover body and a connecting column.

3. The electric toothbrush according to claim 2,

the charging seat is provided with a connecting hole, and the connecting column penetrates through the connecting hole.

4. The electric toothbrush according to claim 2,

the dustproof cover further comprises a hard rubber part, and the soft rubber part is fixed on the hard rubber part in a secondary injection molding mode.

5. The electric toothbrush according to claim 1,

the dust cover portion exposes the housing interior.

6. The electric toothbrush according to claim 1,

the charging assembly comprises a charging circuit board and a charging interface.

7. The electric toothbrush according to claim 6,

the handle further comprises a waterproof ring, and the charging assembly is installed on the inner side face of the charging through hole through the waterproof ring.

8. The electric toothbrush according to claim 7,

the charging socket is characterized in that bosses are arranged on the periphery of the charging through hole and form a slot position with the inner side surface of the charging through hole, the slot position is matched with the shape of the charging interface, a charging slot is arranged at one end, facing the charging socket, of the outer side surface of the charging interface, and the charging slot is connected with the slot position in a sealing mode through the waterproof ring.

9. The electric toothbrush according to claim 6,

the charging base is provided with a limiting post, the limiting post is provided with a buckle, the charging circuit board is provided with a step surface, and the buckle is clamped on the step surface so as to fix the charging circuit board on the limiting post in a clamping manner.

10. The electric toothbrush of claim 9,

the charging seat is also provided with limiting walls extending from two sides of the limiting column, the limiting column and the limiting walls limit the circumferential motion of the charging circuit board, and the buckle limits the axial motion of the charging circuit board.

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