CN209933039U

CN209933039U - Electric tooth brush

Info

Publication number: CN209933039U
Application number: CN201920312718.2U
Authority: CN
Inventors: 陈连成
Original assignee: Shenzhen Top Cloud Information Technology Co Ltd
Current assignee: Shenzhen Top Cloud Information Technology Co Ltd
Priority date: 2019-03-12
Filing date: 2019-03-12
Publication date: 2020-01-14
Anticipated expiration: 2029-03-12

Abstract

The utility model discloses an electric toothbrush, which comprises a support for supporting, a driving device arranged on the support, and a brush head arranged at one end of the support and connected with the driving device in an assembling way, and also comprises a supporting piece and a sensor, wherein the supporting piece is rotationally connected with one end of the support, the driving device is assembled on the support through the supporting piece, and the driving device and the brush head form a lever structure taking the joint of the supporting piece and the support as a fulcrum; the sensor and the driving device are arranged oppositely, the pressure sensing mechanism is arranged between the sensor and the driving device and comprises a metal elastic sheet, the brush head deflects the driving device due to different force application and abuts against the metal elastic sheet to move relative to the sensor, and different detection values are sensed by the sensor and the metal elastic sheet at different distances. The utility model discloses technical scheme can be to electric toothbrush overvoltage protection's suggestion, can know user's use custom through the data real-time supervision dynamics of brushing teeth that the sensor detected again, improves user's experience.

Description

Electric tooth brush

Technical Field

The utility model relates to the technical field of daily necessities, in particular to an electric toothbrush.

Background

At present, electric toothbrushes are increasingly popularized in human lives, and with market popularization, traditional toothbrushes cannot meet the needs of people, people hope that toothbrushes can be more and more intelligent, and better services can be provided for teeth of people.

The electric toothbrush mainly makes the brush head generate high-frequency vibration through the quick rotation and vibration of the electric motor core, instantly decomposes the toothpaste into fine foam, and deeply cleans teeth gaps. Compared with the common toothbrush, the electric toothbrush can more thoroughly remove dental plaque and reduce oral diseases such as gingivitis, periodontal disease, gingival bleeding and the like. However, the conventional electric toothbrush has a corresponding working mode set by the user, and the user only needs to select the currently desired working mode through the fixed button; the other type is mainly used for adding a corresponding sensing device or connecting a corresponding intelligent device, for example, a corresponding pressure sensor is installed in the electric toothbrush, and then the working mode of the electric toothbrush is adjusted in real time through the detection of the pressure sensor, so that the user experience is improved.

For the first electric toothbrush, the fixed working mode is single, so that the use experience of a user is poor; the second electric toothbrush only detects by the pressure sensor and does not depend on the design of mechanism transmission, so that the pressure detection is not accurate enough, even the phenomenon of misinformation is caused, and the stability of the electric toothbrush is not high.

Therefore, in order to solve the above problems, the existing electric toothbrush has yet to be improved and developed.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is desirable to provide an electric toothbrush capable of improving accuracy of pressure sensing.

An electric toothbrush, including the support that is used for supporting, the drive unit disposed on support, dispose the brush head in the one end of the said support and assemble the connection with drive unit, characterized by that, the said electric toothbrush also includes support piece and sensor, the said support piece is connected with one end of the said support to rotate, the said drive unit is assembled on said support through the said support piece, and the said drive unit forms the lever structure with brush head with the junction of the said support piece and support as fulcrum; the sensor is arranged opposite to the driving device, a pressure sensing mechanism is arranged between the sensor and the driving device and comprises a metal elastic sheet, the brush head deflects the driving device due to different forces and abuts against the metal elastic sheet to move relative to the sensor, and different detection values are sensed by the sensor and the metal elastic sheet at different distances.

In one embodiment, the sensor is a capacitive sensor.

In one embodiment, the capacitive sensor comprises an induction coil arranged opposite to the metal elastic sheet, and the induction coil is arranged on a circuit main board of the electric toothbrush.

In one of them embodiment, the support includes power supply portion and installation department, support piece includes the pivot, support piece rotate through the pivot connect in the one end of installation department, pressure sensing mechanism still includes the metal sheet, the both ends of metal sheet are fixed in respectively on support piece and the power supply portion, metal sheet, support piece, installation department and power supply portion enclose jointly and close the installation cavity that forms the confession drive arrangement holds, the metal shrapnel is formed in on the metal sheet.

In one embodiment, the metal plate is provided with a connecting groove, the metal elastic sheet is elastically connected in the connecting groove, the metal elastic sheet comprises a supporting part and a connecting part for connecting the supporting part and the connecting groove, and the connecting part extends from the connecting groove towards the driving device.

In one embodiment, the metal plate is further provided with a first buckling part, the power supply part is provided with a second buckling part, and the first buckling part and the second buckling part are used for fixing two ends of the circuit main board respectively.

In one embodiment, the metal plate is further provided with a positioning portion, the power supply portion is provided with a positioning groove, and the positioning portion is matched with the positioning groove in a positioning mode.

In one embodiment, the metal plate is further provided with a lead slot for a power line of the driving device to pass through.

In one embodiment, the metal plate is further provided with a first reinforcing rib and two second reinforcing ribs, and the circuit main board is arranged between the two second reinforcing ribs.

In one embodiment, the drive means is a motor.

The technical scheme of the utility model, when the brush head is applyed different pressures, according to lever principle, drive arrangement takes place the deflection of different angles to support and push up metal shrapnel relative sensor and remove, make the sensor produce different detected values from this, the detected value size that produces through the sensor goes to judge the pressure size that the brush head received. The electric toothbrush of the utility model feeds back the pressure of the brush head through the displacement change of the metal elastic sheet supported by the sensor detection driving device. Just so solve current electric toothbrush effectively and appear the problem emergence of wrong report because of pressure detection is inaccurate to improve electric toothbrush's accuracy and stability of using, and then reached and to carry out overvoltage protection's suggestion accurately to electric toothbrush, can come real-time supervision user's dynamics of brushing teeth through the data that the sensor detected again, know user's use habit, improve user's experience.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, drawings of other embodiments can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of an embodiment of the electric toothbrush of the present invention;

FIG. 2 is a cross-sectional view of the powered toothbrush of FIG. 1;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is a schematic view of the powered toothbrush of FIG. 1 without the housing;

FIG. 5 is an exploded view of FIG. 4;

FIG. 6 is a partial schematic view of the circuit board and pressure sensing mechanism of FIG. 5;

fig. 7 is a schematic cross-sectional view of the pressure sensing mechanism of fig. 6.

The reference numbers illustrate:

10. a brush head; 20. a brush handle; 21. a housing; 30. a battery; 100. a support; 110. a power supply unit; 111. a second fastening part; 112. positioning a groove; 120. an installation part; 130. a mounting cavity; 200. a drive device; 300. a support member; 310. a rotating shaft; 400. a sensor; 410. an induction coil; 500. a pressure sensing mechanism; 510. a metal spring sheet; 511. a butting part; 512. a connecting portion; 520. a metal plate; 521. connecting grooves; 522. a first fastening part; 523. a positioning part; 524. a lead slot; 525. a first reinforcing rib; 526. a second reinforcing rib; 600. a circuit main board.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as according to the upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (according to the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

One embodiment provides a power toothbrush. Referring to fig. 1 to 3, the electric toothbrush generally includes a head 10 and a handle 20 which are separately provided. The brush shaft 20 has a housing 21, and a support bracket 100 is provided in the housing 21 in the axial direction of the brush shaft 20. The space formed on the holder 100 is divided into a power supply part 110 for mounting the battery 30, and a mounting part 120 for receiving the driving means 200 of the brush head 10 and providing a moving space for the driving means 200. A circuit board 600 is disposed on a side of the bracket 100 close to the driving device 200, and a main control unit (not shown) of the electric toothbrush is disposed in the circuit board 600, and is respectively connected to the driving device 200, the pressure sensing mechanism 500, the switching circuit, and the communication circuit. A power supply line electrically connected to the circuit board 600 is further provided in the power supply unit 110; at the end of the housing 21 remote from the brush head 10 there is provided a charging base for charging the battery 30. A button for controlling the power on-off state and the working mode of the electric toothbrush is further arranged on one side of the shell 21, so that the operation is convenient.

The electric toothbrush further includes a support 300 and a sensor 400, the support 300 is rotatably connected with one end of the bracket 100, the driving unit 200 is assembled on the bracket 100 through the support 300, and the driving unit 200 and the brush head 10 form a lever structure with a joint of the support 300 and the bracket 100 as a fulcrum. The sensor 400 is disposed opposite to the driving device 200. A pressure sensing mechanism 500 is arranged between the sensor 400 and the driving device 200, and the pressure sensing mechanism 500 comprises a metal elastic sheet 510. The driving device 200 deflects when the force is applied to the brush head 10, and the brush head abuts against the metal elastic sheet 510 to move relative to the sensor 400, so that the sensor 400 and the metal elastic sheet 510 have different distances to sense different detection values. Specifically, when different pressures are applied to the toothbrush head 10, since the toothbrush head 10 is connected to the driving device 200, the driving device 200 can deflect at different angles according to the lever principle and move against the metal spring 510 of the pressure sensing mechanism 500 relative to the sensor 400, and the sensor 400 generates different detection values according to the distance change between the sensor 400 and the metal spring 510. Therefore, in the process of brushing teeth, the user can feed back the pressure on the brush head 10 through the detection value generated by the sensor 400, correspondingly prompt the current using strength of the user, so as to detect the habit of using the toothbrush of the user, and recommend a better brushing mode to the user according to the detected data, thereby effectively cleaning teeth. For example, when the user uses a small pressure for a long time and the pressure is suddenly increased at a certain time, the sensor 400 prompts the user that the tooth brushing is abnormal and automatically changes the working mode so as to avoid damaging the teeth; or, when the user uses a large pressure for a long time and uses a small pressure suddenly at a certain time, the sensor 400 prompts the user that the tooth brushing is abnormal, and prompts the user whether to change the working mode so as to avoid unclean brushing. Of course, for the situation that the new user does not know how to use, the sensor 400 can also collect data information of the use habits of the user and recommend the optimal use mode in time.

The utility model discloses an electric toothbrush detects the displacement change that drive arrangement 200 supported metal shrapnel 510 through sensor 400 and feeds back the size of brush head 10 pressure, and it is high to detect the precision. Just so solve current electric toothbrush effectively and appear the problem emergence of wrong report because of pressure detection is inaccurate to improved the accuracy and the stability that electric toothbrush used, and then reached and to carry out overvoltage protection's suggestion to electric toothbrush accurately, the data that again can detect through sensor 400 come real-time supervision user's dynamics of brushing teeth, know user's use habit, provide the different schemes of brushing teeth, improve user's experience.

Referring to fig. 3 and fig. 6, in the present embodiment, the sensor 400 is a capacitive sensor. Further, the capacitive sensor includes an induction coil 410 opposite to the metal dome 510, and the induction coil 410 is disposed on the circuit board 600 of the electric toothbrush. Specifically, the induction coil 410 and the metal dome 510 are electrically connected to a signal processing chip (not shown) of the circuit board 600, when the relative position of the capacitive sensor to the metal dome 510 changes, the interelectrode capacitance changes to form a differential capacitance, the signal processing chip detects the capacitance change to induce different capacitance signals, the different capacitance signals are different detection values generated by the capacitive sensor, and the pressure applied to the brush head 10 is fed back according to the detection values generated by the capacitive sensor. Of course, the sensor 400 may also adopt other modes such as a hall effect sensor, etc., and a magnet is arranged on the circuit board 600, and another magnet is arranged on the circular elastic sheet, so as to sense the pressure of the brush head 10 according to the change of the magnetic flux. The sensor 400 is selected to be installed according to the characteristics of the actual product, and is not particularly limited herein.

Referring to fig. 2 and 5, in the present embodiment, the bracket 100 includes a power supply portion 110 and a mounting portion 120, the supporting member 300 includes a rotating shaft 310, the supporting member 300 is rotatably connected to one end of the mounting portion 120 through the rotating shaft 310, the pressure sensing mechanism 500 further includes a metal plate 520, two ends of the metal plate 520 are respectively fixed to the supporting member 300 and the power supply portion 110, the metal plate 520, the supporting member 300, the mounting portion 120 and the power supply portion 110 together enclose to form a mounting cavity 130 for the driving device 200 to accommodate, and the metal elastic piece 510 is formed on the metal plate 520. Specifically, the metal plate 520 not only can effectively limit the deflection angle of the driving device 200, but also can prevent the deflection angle from being too large to press the circuit board 600, so that the circuit board 600 is damaged; the formation of the metal dome 510 is also facilitated, and the electrical connection with the signal processing chip of the circuit board 600 is facilitated. So set up, make pressure sensing mechanism 500's simple structure, novel in design, reasonable, the practicality is strong, and the cost of manufacture is low, is fit for using widely of electric toothbrush.

Further, referring to fig. 6 and 7, in the present embodiment, a connecting groove 521 is formed on the metal plate 520, the metal elastic piece 510 is elastically connected in the connecting groove 521, the metal elastic piece 510 includes a top portion 511 and a connecting portion 512 connecting the top portion 511 and the connecting groove 521, and the connecting portion 512 extends from the connecting groove 521 toward the driving device 200, so that a sufficient distance is maintained between the top portion 511 and the capacitive sensor, thereby obtaining more detection values of the capacitive sensor and improving the detection accuracy. The abutting portion 511 and the induction coil 410 are preferably arranged in a circular shape, so that the reaction is sensitive and the manufacturing is convenient.

Referring to fig. 4, in the present embodiment, the metal plate 520 is further provided with a first fastening portion 522, the power supply portion 110 is provided with a second fastening portion 111, and the first fastening portion 522 and the second fastening portion 111 are used for respectively fixing two ends of the circuit board 600, so as to facilitate the installation of the circuit board 600 and improve the assembly efficiency.

Referring to fig. 5, in the present embodiment, the metal plate 520 is further provided with a positioning portion 523, the power supply portion 110 is provided with a positioning slot 112, and the positioning portion 523 is in positioning fit with the positioning slot 112, so as to facilitate quick positioning and installation of the metal plate 520 on the bracket 100 and improve assembly efficiency.

Referring to fig. 6 and 7, in the present embodiment, the metal plate 520 further has a lead slot 524 for a power line of the driving device 200 to pass through. The power cord of the driving device 200 needs to be led out from the cord guiding groove 524 and soldered to the circuit board 600, so as to facilitate the wiring.

Referring to fig. 4 and fig. 7, in the present embodiment, the metal plate 520 is further provided with a first reinforcing rib 525 and two second reinforcing ribs 526, and the circuit main board 600 is disposed between the two second reinforcing ribs 526. Because the metal plate 520 is thin, the strength of the metal plate 520 can be enhanced by the arrangement of the first reinforcing rib 525 and the second reinforcing rib 526, the driving device 200 is prevented from deforming after contacting the metal plate 520, and the strength requirement of the metal plate 520 is ensured. In addition, the two second reinforcing ribs 526 have a positioning effect on the circuit main board 600, and are convenient to install.

In the present embodiment, the driving device 200 is preferably a motor.

The technical features of the embodiments described above can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An electric toothbrush, including the support that is used for supporting, the drive unit disposed on support, dispose the brush head in the one end of the said support and assemble the connection with drive unit, characterized by that, the said electric toothbrush also includes support piece and sensor, the said support piece is connected with one end of the said support to rotate, the said drive unit is assembled on said support through the said support piece, and the said drive unit forms the lever structure with brush head with the junction of the said support piece and support as fulcrum; the sensor is arranged opposite to the driving device, a pressure sensing mechanism is arranged between the sensor and the driving device and comprises a metal elastic sheet, the brush head deflects the driving device due to different forces and abuts against the metal elastic sheet to move relative to the sensor, and different detection values are sensed by the sensor and the metal elastic sheet at different distances.

2. The electric toothbrush of claim 1, wherein the sensor is a capacitive sensor.

3. The electric toothbrush according to claim 2, wherein the capacitive sensor comprises an induction coil disposed opposite to the metal spring, and the induction coil is disposed on a circuit main board of the electric toothbrush.

4. The electric toothbrush according to claim 3, wherein the bracket comprises a power supply part and an installation part, the support part comprises a rotating shaft, the support part is rotatably connected to one end of the installation part through the rotating shaft, the pressure sensing mechanism further comprises a metal plate, two ends of the metal plate are respectively fixed to the support part and the power supply part, the metal plate, the support part, the installation part and the power supply part jointly enclose and form an installation cavity for the driving device to accommodate, and the metal elastic sheet is formed on the metal plate.

5. The electric toothbrush according to claim 4, wherein the metal plate has a connecting groove, the metal spring piece is elastically connected to the connecting groove, the metal spring piece includes a top portion and a connecting portion connecting the top portion and the connecting groove, and the connecting portion extends from the connecting groove toward the driving device.

6. The electric toothbrush according to claim 5, wherein the metal plate is further provided with a first fastening part, the power supply part is provided with a second fastening part, and the first fastening part and the second fastening part are used for respectively fixing two ends of the circuit main board.

7. The electric toothbrush according to claim 6, wherein the metal plate is further provided with a positioning portion, the power supply portion is provided with a positioning groove, and the positioning portion is in positioning fit with the positioning groove.

8. The electric toothbrush according to claim 7, wherein the metal plate further defines a lead groove for passing a power cord of the driving device.

9. The electric toothbrush according to claim 8, wherein the metal plate is further provided with a first reinforcing rib and two second reinforcing ribs, and the circuit main board is disposed between the two second reinforcing ribs.

10. The electric toothbrush according to any one of claims 1 to 9, wherein the drive means is a motor.