CN113796981A - Toothbrush handle and electric toothbrush - Google Patents

Abstract

The invention relates to a toothbrush handle and an electric toothbrush, which comprise a handle shell, a driving assembly, a control module and a brushing pressure detection assembly, wherein the handle shell is provided with a handle cover; the driving assembly is accommodated in the handle shell and is provided with a power output shaft which penetrates out of the handle shell and is connected with the brush head; the control module is accommodated in the handle shell and is electrically connected with the driving assembly; the washing pressure detection assembly comprises a connecting circuit board and a washing pressure sensor, the connecting circuit board comprises a first board part attached to the power output shaft and a second board part used for being electrically connected with the control module, the washing pressure sensor is electrically connected to the first board part, and the washing pressure sensor is used for detecting the deformation pressure of the power output shaft; the control module receives pressure detection information of the washing pressure sensor and outputs a control instruction to the driving assembly based on the pressure detection information.

Description

Toothbrush handle and electric toothbrush

Technical Field

The invention relates to the technical field of electric toothbrushes, in particular to a toothbrush handle and an electric toothbrush.

Background

The electric toothbrush mainly makes the brush head generate high-frequency vibration through the quick rotation or vibration of the electric motor, instantly decomposes the toothpaste into fine foam, and deeply cleans teeth gaps.

Prior art power toothbrushes typically employ a piezoresistive sensor to detect the brushing pressure of the toothbrush to prevent foam from splashing to enhance the user experience. However, the piezoresistive sensor is easily affected by external environment and temperature, and has poor detection accuracy and stability.

Disclosure of Invention

The invention aims to provide a toothbrush handle and an electric toothbrush, and aims to solve the problem that the function of preventing foam from splashing cannot be effectively realized due to poor detection accuracy and stability when the electric toothbrush is subjected to brushing pressure detection in the prior art.

In accordance with this technical problem, there is provided in a first aspect a toothbrush handle comprising:

a handle shell;

the driving assembly is accommodated in the handle shell and is provided with a power output shaft which penetrates out of the handle shell and is connected with the brush head;

the control module is accommodated in the handle shell and is electrically connected with the driving assembly;

the washing pressure detection assembly comprises a connecting circuit board and a washing pressure sensor, the connecting circuit board comprises a first board part attached to the power output shaft and a second board part used for being electrically connected with the control module, the washing pressure sensor is electrically connected to the first board part, and the washing pressure sensor is used for detecting the deformation pressure of the power output shaft;

the control module receives pressure detection information of the washing pressure sensor and outputs a control instruction to the driving assembly based on the pressure detection information.

As an embodiment of the present invention, the power output shaft is formed with a first groove, and the first plate portion is attached to a groove bottom of the first groove.

As an embodiment of the present invention, the power output shaft further has a second groove, and the second groove is disposed opposite to the first groove.

As an embodiment of the present invention, the connection circuit board further includes a third plate portion connected between the first plate portion and the second plate portion, and the third plate portion extends along an axial direction of the power output shaft to be attached to the power output shaft.

As an embodiment of the present invention, the control module includes a main control board disposed side by side with the driving assembly;

the second plate part is attached to the main control board and arranged in parallel with the third plate part.

As an embodiment of the present invention, the connection circuit board further includes a fourth plate portion connected between the second plate portion and the third plate portion, and a fifth plate portion connected between the first plate portion and the third plate portion.

As an embodiment of the present invention, the driving assembly includes a motor and a front end sealing member, the electrode includes a motor main body and the power output shaft connected to the front end main body, the sealing member is sleeved on the power output shaft and seals the end of the electrode main body;

wherein the fourth plate portion is at least partially disposed against the front end seal.

As an embodiment of the present invention, the front end sealing member includes a sealing portion and a clamping portion, the clamping portion and the sealing portion form a clamping opening, and an end portion of the main control board is clamped in the clamping opening;

wherein the second plate portion is arranged side by side with the clamping portion.

As an embodiment of the present invention, the fifth plate portion is formed by the first plate portion extending along a groove wall of the first groove, and the fifth plate portion extends out of the first groove to connect with the third plate portion.

In a second aspect, the present invention provides an electric toothbrush comprising a toothbrush handle as described in the first aspect.

The embodiment of the invention has the following beneficial effects:

according to the invention, the washing pressure sensor is arranged on the power output shaft through the first plate part connected with the circuit board, so that on one hand, the washing pressure sensor directly detects the deformation pressure of the power output shaft to feed back the washing pressure during tooth brushing, thereby improving the detection accuracy of the washing pressure sensor, and on the other hand, the convenience and the stability of the washing pressure sensor arranged on the power output shaft are improved, thereby improving the stability of the washing pressure sensor; meanwhile, the second part of the connecting circuit board is used for electrically connecting the washing pressure sensor and the control module (the main control board), so that the control module can receive pressure detection information of the washing pressure sensor and control the driving force of the driving assembly based on the pressure detection information, and the phenomenon that the washing pressure is too large due to the fact that the driving force of the driving assembly is too large and further foam splashes is prevented. By the technical scheme, the technical effect that the function of preventing foam splashing cannot be effectively realized due to poor detection accuracy and poor stability when the brushing pressure of the electric toothbrush is detected in the prior art is solved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings 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, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic view showing an overall structure of a power toothbrush according to an embodiment of the present invention;

FIG. 2 is an exploded view of the electric toothbrush according to one embodiment of the present invention;

FIG. 3 is a partial schematic view of a powered toothbrush according to one embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a key circuit board;

FIG. 5 is a schematic view of a structure of a connection circuit board;

FIG. 6 is a schematic view of the front end seal;

FIG. 7 is a schematic diagram of the structure of a light emitting assembly and a light guiding assembly;

FIG. 8 is a schematic view of the closure;

fig. 9 is a schematic structural diagram of an NFC tag assembly;

FIG. 10 is a partial cross-sectional view of FIG. 1;

FIG. 11 is another partial cross-sectional view of FIG. 1;

FIG. 12 is another partial cross-sectional view of FIG. 1;

FIG. 13 is a schematic cross-sectional view of FIG. 1;

figure 14 is a schematic cross-sectional view of the head;

fig. 15 is a sectional view schematically showing the structure of the brush head handle.

Wherein: 1000. an electric toothbrush; 100. a toothbrush handle; 10. a handle shell; 11. a main housing; 111. an assembly port; 112. a connecting port; 113. a pressing part; 114. a recess; 115. a first limiting part; 116. a second limiting part; 12. a cover body; 121. a bearing part; 13. a second seal member; 14. a first seal member; 141. a seal main portion; 142. a first clamping part; 143. a second clamping part; 15. an elastic member; 20. a drive assembly; 21. a motor; 211. a motor main body; 212. a power take-off shaft; 2121. a first groove; 2122. a second groove; 22. a front end seal; 22a, a clamping opening; 221. a sealing part; 222. a clamping portion; 23. a back end seal; 24. shock-proof foam; 31. a main control board; 41. fixing a bracket; 42. a limiting frame; 50. a washing pressure detection assembly; 51. connecting the circuit board; 511. a first plate portion; 512. a second plate portion; 513. a third plate portion; 514. a fourth plate portion; 515. a fifth plate portion; 52. washing and brushing the pressure sensor; 60. a pressing force detection unit; 61. a key circuit board; 61a, an opening; 611. a main body portion; 612. a force receiving portion; 62. a pressing force sensor; 63. a sticky member; 64. connecting the elastic sheets; 70. a power supply assembly; 71. a battery; 72. a charging member; 73. carrying out gum application; 74. a heat sink; 80. a light emitting assembly; 81. a light emitting member; 82. an electrical connection; 821. a first connection portion; 822. a second connecting portion; 83. a lamp panel; 831. a first board surface; 832. a second board surface; 833. a through hole; 90. an NFC reader; 110. a light guide assembly; 1101. a first light guide cylinder; 1101a, a light guide slope; 1101b, avoiding holes; 1101c, a pressing part; 1101d, a second fastening portion; 11011. a peripheral wall; 11012. an end wall; 1102. a second light guide tube; 1102a, a second anti-slip stripe; 200. a brush head; 201. a brush head handle; 2011. an accommodating cavity; 2012. opening the mouth; 2013. a first step; 2014. a second step; 2015. a third step; 202. an NFC tag component; 2021. an NFC circuit board; 2021a, a second via; 2022. an NFC chip; 203. sealing the cover; 203a, a first through hole; 2031. a first abutting portion; 2031a, avoiding the notch; 2032. a second abutting portion; 2033. a third abutting portion; 204. a connecting frame; 205. and (3) brush hairs.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-15, an embodiment of the present invention provides a power toothbrush 1000, the power toothbrush 1000 including a toothbrush handle 100 for hand holding and a head 200 detachably connected to the toothbrush handle 100. The toothbrush handle 100 comprises a handle housing 10, a driving assembly 20 accommodated in the handle housing 10, and a control module controlling the operation of the driving assembly 20, wherein the driving assembly 20 has a power output shaft 212, and the power output shaft 212 penetrates through the handle housing 10 and is fixedly connected with the toothbrush head 200 to drive the toothbrush head 200 to move.

Referring to fig. 2, the handle case 10 includes a main case 11 and a cover 12; an assembly opening 111 is formed at one end of the main housing 11, the driving assembly 20, the control module and the like are assembled into the main housing 11 through the assembly opening 111, and the cover 12 is connected with the main housing 11 to seal the assembly opening 111; the other end of the main housing 11 is formed with a connection port 112, and the power output end of the driving unit 20 is connected to the brush head 200 through the connection port 112.

With reference to fig. 10, in some specific implementations, the handle case 10 further includes a first sealing member 14, the first sealing member 14 includes a main sealing portion 141, and a first clamping portion 142 and a second clamping portion 143 connected to two ends of the main sealing portion 141, the main sealing portion 141 is sandwiched between a wall surface of the connection port 112 and the power output shaft 212, and the main sealing portion 141 surrounds the power output shaft 212 in an annular structure; the first engaging portion 142 is engaged with the inner wall of the main housing 11, and the second engaging portion 143 is located outside the main housing 11 to be engaged with the outer wall of the main housing 11.

In some specific embodiments, the handle housing 10 further includes an elastic member 15 wound around the main sealing portion 141, i.e., the elastic member 15 is sandwiched between the main sealing portion 141 and the wall surface of the connection port 112.

In particular embodiments, the handle housing 10 further includes a second seal 13 disposed between the cover 12 and the main housing 11.

Referring to fig. 2, the toothbrush handle 100 further includes a fixing bracket 41 received in the fixing handle case 10, and the control module includes a main control panel 31 provided on the fixing bracket 41.

The driving assembly 20 is disposed on the fixing bracket 41, and referring to fig. 9, the driving assembly 20 includes a motor 21, a front end sealing member 22 and a rear end sealing member 23, the motor 21 includes a motor main body 211 and a power output shaft 212 connected to the electrode main body, the front end sealing member 22 is sleeved on the power output shaft 212 and the sealing cover 203 is disposed on an end portion of the motor main body 211, and the rear end sealing member 23 is covered on an end portion of the main body of the motor 21 far away from the power output shaft 212.

Wherein, the motor body 211 is arranged on the fixed bracket 41; the toothbrush handle 100 further includes a stopper 42 accommodated in the handle case 10, and the stopper 42 is used to limit the circumferential side of the power output shaft 212.

In some specific embodiments, referring to fig. 6, the main control board 31 is disposed side by side with the electrode body; the front end seal 22 includes a sealing portion 221 and a clamping portion 222, the clamping portion 222 and the sealing portion 221 form a clamping opening 22a, and an end portion of the main control board 31 is clamped in the clamping opening 22 a. That is, when the sealing portion 221 seals the motor main body 211, the clamping portion 222 and the sealing portion 221 cooperate to clamp the main control board 31, so that the main control board 31 and the motor main body 211 are arranged side by side, and the assembling tightness of the whole machine is improved.

In some specific embodiments, referring to fig. 2, the drive assembly 20 further includes a shock absorbing foam 24 sandwiched between the mounting bracket 41 and the electrode body.

Referring to fig. 2 and 11, the handle case 10 is formed with a pressing part 113 that can be micro-deformed, and the toothbrush handle 100 further includes a pressing force detecting assembly 60, the pressing force detecting assembly 60 is disposed on an inner wall of the handle case 10 corresponding to the pressing part 113, and the pressing force detecting assembly 60 is used for detecting a pressing force acting on the pressing part 113; the control module is electrically connected to the pressing force detection assembly 60 to receive pressure detection information of the pressing force detection assembly 60 and output a control command to the drive assembly 20 based on the pressure detection information.

In this embodiment, the pressing portion 113 is formed by a portion of the handle case 10, thereby avoiding the need to additionally provide a switch button so as not to completely isolate the interior of the handle case 10; the pressing part 113 is arranged to be capable of deforming slightly, so that the pressure acting on the pressing part 113 is transmitted to the pressing force detection assembly 60 on the inner wall of the handle shell 10, the control module is electrically connected with the pressing force detection assembly 60 to receive the pressure detection information, and the driving assembly 20 is controlled to work according to the pressure detection information; according to the technical scheme, the button function can be realized through the matching of the pressing part 113 and the pressing force detection assembly 60, the waterproof function is ensured, and the technical problem that the switch part of the electric toothbrush 1000 in the prior art cannot be completely waterproof is solved.

The pressure detection information may be embodied as a degree of pressing force, a number of consecutive presses, or the like.

In some embodiments, the control module controls the start and stop of the driving assembly 20 according to the pressure detection information, i.e., the power toothbrush 1000 is turned on and off.

In some embodiments, the control module is further pre-stored with tooth brushing modes corresponding to different pressure detection information, and therefore, the control module can also control the driving assembly 20 to drive in the corresponding tooth brushing modes according to the received pressure detection information, where the tooth brushing modes may be a cleaning mode, a whitening mode, a massage mode, a tongue coating mode, and the like.

In some specific embodiments, the control module further pre-stores the gears corresponding to different pressure detection information, so that the control module can also control the driving assembly 20 to drive at the corresponding gear according to the pressure detection information, thereby changing the driving force of the driving assembly 20 and the brushing force of the electric toothbrush 1000.

Referring to fig. 2, the pressing portion 113 is recessed toward the inside of the grip case 10 and is formed with a notch 114. On one hand, the user can clearly recognize the pressing portion 113 when using the electric toothbrush 1000, and on the other hand, the pressing portion 113 forms a notch 114, so that when the pressing portion 113 is pressed by a finger, the finger can be attached to the contour of the pressing portion 113, thereby improving the user experience.

With continued reference to fig. 2 and 11, the pressing force detecting assembly 60 includes a key circuit board 61 fixed on the inner wall of the handle case 10 and a pressing force sensor 62 disposed on the key circuit board 61, and the key circuit board 61 is electrically connected to the control module, and the pressing force sensor 62 is located within the pressing range of the pressing portion 113. The key circuit board 61 enables a stable mounting of the push-force sensor 62 on the one hand and an electrical connection of the push-force sensor 62 to the control module (main control board 31) on the other hand.

In some embodiments, the force sensor 62 may be a MEMS force sensor.

In one embodiment, referring to fig. 4, the key circuit board 61 is formed with an opening 61a, the key circuit board 61 is divided into a main body portion 611 and a force receiving portion 612 through the opening 61a, wherein the force receiving portion 612 is disposed opposite to the pressing portion 113, and the pressing force sensor 62 is disposed on the force receiving portion 612. Therefore, the opening 61a is formed between the force receiving portion 612 and the main body portion 611, which can reduce the hardness of the force receiving portion 612, so that the pressing force sensor 62 on the force receiving portion 612 can better receive the pressing force applied to the pressing portion 113, and the detection accuracy of the pressing force sensor 62 can be improved.

In some specific embodiments, the openings 61a are formed by recessing the side surface of the key circuit board 61, the openings 61a are two, and the two openings 61a are oppositely disposed on both sides of the pressing force sensor 62. The connection relationship between the force receiving portion 612 and the main body portion 611 is ensured, the hardness of the force receiving portion 612 is further reduced, and the detection accuracy of the pressing force sensor 62 is improved.

In one embodiment, referring to fig. 2 and 11, the pressing-force detecting assembly 60 further includes an adhesive member 63, and the adhesive member 63 is used to fix the key circuit board 61 on the inner wall of the handle case 10.

In an embodiment, referring to fig. 2 and 11, the pressing force detecting assembly 60 further includes a connecting elastic sheet 64, one end of the connecting elastic sheet 64 is electrically connected to the control module, and the other end of the connecting elastic sheet 64 is electrically connected to the key circuit board 61.

Through the elasticity of the connecting elastic sheet 64, the electric connection between the key circuit board 61 and the control module is ensured, and meanwhile, the assembling convenience and the disassembling convenience between the key circuit board 61 and the control module are improved.

In some specific embodiments, one end of the connecting spring piece 64 forms a fixed end, and the other end of the connecting spring piece 64 forms an elastic end; the fixed end is electrically connected with the control module, and the elastic end is abutted against the key circuit board 61.

In one embodiment, referring to fig. 11, the inner wall of the handle case 10 is formed with a first stopper portion 115; an assembly opening 111 is formed at one end of the handle case 10, and the pressing force detecting unit 60 is introduced into the handle case 10 through the assembly opening 111 and abuts against the first stopper 115. The present embodiment can determine whether the pressing force detecting assembly 60 is guided into position by the first stopper portion 115, that is, when the pressing force detecting assembly 60 abuts against the first stopper portion 115, the pressing force sensor 62 just corresponds to the pressing portion 113, that is, the pressing force sensor 62 is located within the pressing range of the pressing portion 113.

Further, referring to fig. 13, at least two second limiting portions 116 are formed on the inner wall of the handle case 10, the two second limiting portions 116 are respectively located at two ends of the first limiting portion 115, and the pressing-force detecting assembly 60 is located between the two second limiting portions 116.

That is, the second stopper portion 116 extends in the longitudinal direction from the assembly opening 111 toward the first stopper portion 115, and the two second stopper portions 116 located at the opposite ends of the first stopper portion 115 are spaced from each other, so that the pressing force detection unit 60 can be guided while being assembled into the handle case 10, and the pressing force detection unit 60 is prevented from being deflected, thereby ensuring that the pressing force sensor 62 of the pressing force detection unit 60 is aligned with the pressing portion 113.

Referring to fig. 2 and 3, the toothbrush handle 100 further comprises a brushing pressure detecting assembly 50, the brushing pressure detecting assembly 50 comprises a connecting circuit board 51 and a brushing pressure sensor 52, the connecting circuit board 51 comprises a first board portion 511 attached to the power output shaft 212 and a second board portion 512 for electrically connecting with the control module, the brushing pressure sensor 52 is electrically connected to the first board portion 511, and the brushing pressure sensor 52 is used for detecting the deformation pressure of the power output shaft 212; wherein the control module receives pressure detection information of the washing pressure sensor 52 and outputs a control command to the driving assembly 20 based on the pressure detection information.

In the embodiment, the brushing pressure sensor 52 is arranged on the power output shaft 212 through the first plate part 511 connected with the circuit board 51, so that on one hand, the brushing pressure sensor 52 directly detects the deformation pressure of the power output shaft 212 to feed back the brushing pressure during tooth brushing, thereby improving the detection accuracy of the brushing pressure sensor 52, and on the other hand, the convenience and the stability of the arrangement of the brushing pressure sensor 52 on the power output shaft 212 are improved, thereby improving the stability of the brushing pressure sensor 52; meanwhile, the second part of the connection circuit board 51 is used for electrically connecting the brushing pressure sensor 52 and the control module (the main control board 31), so that the control module can receive the pressure detection information of the brushing pressure sensor 52 and control the driving force of the driving assembly 20 based on the pressure detection information, and the phenomenon that the brushing pressure is too high due to the too high driving force of the driving assembly 20 and further the foam splashes is prevented. By the technical scheme, the problem that the function of preventing foam splashing cannot be effectively realized due to poor detection accuracy and stability when the electric toothbrush 1000 is subjected to brushing pressure detection in the prior art is solved.

In some specific embodiments, the connection circuit board 51 is a flexible circuit board, and the assembly requirement of the connection circuit board 51 can be better satisfied by the flexibility of the connection circuit board 51.

In particular embodiments, the scrub pressure sensor 52 may be a MEMS pressure sensor.

In one embodiment, referring to fig. 3, the power output shaft 212 is formed with a first groove 2121, and the first plate portion 511 is attached to the groove bottom of the first groove 2121. On one hand, the first plate portion 511 and the washing pressure sensor 52 are received by the first recess 2121, so that the occupied space of the washing pressure detecting assembly 50 relative to the handle case 10 is reduced; on the other hand, the first groove 2121 is formed in the power output shaft 212, so that the brushing pressure sensor 52 can better receive and feed back the deformation degree of the power output shaft 212, and the detection accuracy of the brushing pressure sensor 52 is improved.

In addition, referring to fig. 3, the power output shaft 212 is further formed with a second groove 2122, and the second groove 2122 is disposed opposite to the first groove 2121. By arranging the second grooves 2122, the deformation degree of the power output shaft 212 can be further amplified, and the accuracy of the brushing pressure detecting assembly 50 for detecting the driving force of the power output shaft 212 is further improved.

Referring to fig. 3 and 5, in some specific embodiments, the connection circuit board 51 further includes a third plate portion 513 connected between the first plate portion 511 and the second plate portion 512, and the third plate portion 513 extends in the axial direction of the power output shaft 212 to be attached to the power output shaft 212. By attaching the third plate portion 513 formed to extend in the axial direction of the power output shaft 212 to the power output shaft 212, it is possible to contribute to the first plate portion 511 being stably attached to the bottom of the first recess 2121 on the one hand, and to reduce the space occupied by the third plate portion 513 on the other hand.

In some specific embodiments, the first plate portion 511 and the third plate portion 513 are disposed in parallel, which facilitates smooth connection of the third plate portion 513 between the first plate portion 511 and the second plate portion 512.

In some specific embodiments, the main control board 31 is disposed side by side with the driving assembly 20, wherein the second plate portion 512 is disposed on the main control board 31, and the second plate portion 512 is disposed parallel to the third plate portion 513. On one hand, the second plate part 512 is convenient to be attached and connected to the main control board 31, and on the other hand, the connecting circuit board 51 is convenient to be formed.

Further, with continued reference to fig. 3, 5, and 10, the connection circuit board 51 further includes a fourth plate portion 514 connected between the second plate portion 512 and the third plate portion 513, and a fifth plate portion 515 connected between the first plate portion 511 and the third plate portion 513.

In some embodiments, the fourth plate portion 514 at least partially abuts against the front end sealing member 22, so that the assembling stability of the connection circuit board 51 can be increased.

In some specific embodiments, the second plate portion 512 is disposed alongside the clamping portion 222 of the front end seal 22.

In some specific embodiments, the fifth plate portion 515 is formed by the first plate portion 511 extending along a groove wall of the first groove 2121, and the fifth plate portion 515 extends out of the first groove 2121 to connect with the third plate portion 513. The profile of the fifth plate portion 515 based on the shape of the first recess 2121, that is, the fifth plate portion 515 is disposed close to the groove wall of the first recess 2121, contributes to the assembly stability of the fifth plate portion 515, and assists in defining the position of the first plate portion 511 and the position of the third plate portion 513 by the fifth plate portion 515.

In one embodiment, referring to fig. 2, 7 and 12, the toothbrush handle further comprises a light guide assembly 110 and a light emitting assembly 80, wherein the light guide assembly 110 is accommodated in the handle housing 10 and is disposed along the inner wall of the handle housing 10; the light emitting element 80 is accommodated in the handle case 10, and the light emitting element 80 emits light toward the light guide element 110.

In the present embodiment, the light guide assembly 110 is disposed along the inner wall of the handle housing 10, and the light emitted from the light emitting assembly 80 can be guided into the light guide assembly 110, so that the light guide assembly 110 can emit light as a whole; the handle housing 10 is made of a light-transmitting material, so that a region of the handle housing 10 corresponding to the light guide element 110 forms a light-transmitting region with a large area and uniform light emission. By applying the technical scheme, the light-emitting area and the light-emitting uniformity of the light-emitting component 80 are increased, so that the peripheral side surface of the toothbrush handle 100 can uniformly transmit light in a large area, the appearance effect is cool, and the attractiveness of the toothbrush handle 100 is improved.

In an embodiment, referring to fig. 7 and 12, the light guide assembly 110 includes a first light guide barrel 1101 for receiving the light emitted by the light emitting assembly 80, and a second light guide barrel 1102 interposed between the first light guide barrel 1101 and the handle housing 10, wherein the first light guide barrel 1101 is made of a light-transmitting material, and the second light guide barrel 1102 is made of a semi-light-transmitting material. That is, the first light guide cylinder 1101 is completely transparent, the second light guide cylinder 1102 is semi-transparent, the light guiding property of the light guide assembly 110 is ensured by the completely transparent first light guide cylinder 1101, and the internal structure of the handle case 10, such as the battery 71 and the fixed support 41 in the handle case 10, can be shielded while the light permeability is ensured by the semi-transparent second light guide cylinder 1102.

It should be noted that the length of first light guide cylinder 1101 and the length of second light guide cylinder 1102 may be adjusted according to actual needs, but it is necessary to ensure that the length of second light guide cylinder 1102 is greater than or equal to the length of first light guide cylinder 1101, and the length of handle case 10 is greater than the length of second light guide cylinder 1102.

In addition, the light guide assembly 110 is arranged into the first light guide cylinder 1101 and the second light guide cylinder 1102, the second light guide cylinder 1102 is annularly arranged along the inner peripheral wall of the handle shell 10, and the first light guide cylinder 1101 is annularly arranged along the inner peripheral wall of the second light guide cylinder 1102, so that the light transmission area of the handle shell 10 is an annular light transmission area, and the appearance of the toothbrush handle 100 is further improved.

The first light guide cylinder 1101 includes a peripheral wall 11011 attached to an inner wall of the second light guide cylinder 1102 and an end wall 11012 formed by protruding from the peripheral wall 11011 to the inside thereof; wherein the light emitting assembly 80 is disposed opposite the end wall 11012. That is, most of the light emitted from the light emitting assembly 80 is received by the end wall 11012 and then diffused to the peripheral wall 11011, thereby ensuring uniform light transmission of the peripheral wall 11011, i.e., uniform light transmission of the first light guiding cylinder 1101.

In some specific embodiments, referring to fig. 12, a light guiding slope 1101a is formed at an internal corner of the end wall 11012 and the peripheral wall 11011, and the light guiding slope 1101a faces the light emitting assembly 80, so that light is diffused not only to the peripheral wall 11011 through the end wall 11012 but also to the peripheral wall 11011 through the light guiding slope 1101a, the turning range of the light diffused to the peripheral wall 11011 is reduced through the light guiding slope 1101a, and the uniform light transmittance of the peripheral wall 11011 is further improved.

In one embodiment, referring to fig. 7 and 12, the light emitting assembly 80 includes a light emitting element 81 and an electrical connector 82, the light emitting element 81 is located on one side of the end wall 11012, the electrical connector 82 includes a first connection portion 821 electrically connected to the light emitting element 81 and a second connection portion 822 connected to the first connection portion 821, and the second connection portion 822 is used for electrically connecting to a control module (main control board 41) so that the control module can issue a control command to control the operation of the light emitting assembly 80.

In fig. 12, the fixed bracket 41 abuts on the end wall 11012, and the main control board 41 is provided on the fixed bracket 41. Therefore, the end wall 11012 is further formed with a avoiding hole 1101b, and the second connecting portion 822 passes through the avoiding hole 1101b to be electrically connected with the control module, so that not only is the light emitting assembly 80 ensured to emit light toward the end wall 11012, but also the electrical connection between the light emitting assembly 80 and the control module is ensured, and the assembly between the light guide assembly 110 and the fixing bracket 41 is further compact.

In addition, fig. 7 and 12, light-emitting component 80 further includes a lamp panel 83 for fixing light-emitting member 81, first connecting portion 821 and lamp panel 83 are connected, and stable connection between light-emitting member 81 and first connecting portion 821 is realized through lamp panel 83.

In some specific embodiments, the number of the light emitting members 81 is several, and the several light emitting members 81 are arranged at intervals along the circumferential direction of the lamp panel 83.

Referring to fig. 7, the lamp panel 83 has a first panel 831 opposite to the end wall 11012, a second panel 832 opposite to the first panel 831, and a through hole 833 penetrating through the first panel 831 and the second panel 832; the light emitting element 81 is electrically connected to the first plate surface 831; the electrical connector 82 further includes a third connecting portion 823 connected between the first connecting portion 821 and the second connecting portion 822, and the third connecting portion 823 passes through the through hole 833 to allow the first connecting portion 821 to be attached to the second plate surface 831. Therefore, first connecting portion 821 joint is on lamp plate 83, and there is mutual relay power between lamp plate 83 and first connecting portion 821, has further improved the stability of being connected between first connecting portion 821 and lamp plate 83.

In some specific embodiments, referring to fig. 12, the handle case 10 is formed with a bearing portion 121 for placing the lamp panel 83 thereon, and the first light guide barrel 1101 is further formed with a pressing portion 1101c for pressing the lamp panel 83 on the bearing portion 121. That is, the position of the lamp panel 83 is limited by the joint limitation of the bearing part 121 and the pressing part 1101 c.

Further, the pressing portion 1101c is formed by extending the end wall 11012, or the pressing portion 1101c is formed by extending the peripheral wall 11011, or the pressing portion 1101c is formed by extending the end wall 11012 and the peripheral wall 11011 together.

Further, the receiving portion 121 is formed by the lid body 12.

In some specific embodiments, referring to fig. 7, a first fastening portion 411 is formed on the fixing bracket 41, and a second fastening portion 1101d is formed on an end of the peripheral wall 11011 away from the end wall 11012; wherein the end wall 11012 abuts against the fixed bracket 41, and the second fastening portion 1101d is connected to the first fastening portion 411. That is, first light guide barrel 1101 is fixed in position to fixing holder 41 by end wall 11012 and second fastening portion 1101d, and second light guide barrel 1102 is fixed in position by being interposed between first light guide barrel 1101 and handle case 10.

In some embodiments, referring to fig. 7, the inner wall of the handle housing 10 is formed with a first anti-slip stripe, the outer wall of the second light guide cylinder housing 1102 is formed with a second anti-slip stripe 1102a, and after the second light guide cylinder 1102 is assembled into the handle housing 10, the first anti-slip stripe is engaged with the second anti-slip stripe 1102a to prevent the second light guide cylinder 1102 from rotating relative to the handle housing 10.

In one embodiment, referring to fig. 2, the toothbrush handle 100 further comprises a power supply assembly 70 housed in the handle housing 10, the power supply assembly 70 comprises a battery 71 disposed on the fixing bracket 41 and a charging member 72 electrically connected to the battery 71, and the battery 71 is electrically connected to the driving assembly 20, the light emitting assembly 80, the control module, and the like to supply power.

In some specific embodiments, the charging element 72 may be configured to be connected to a charging interface, or may be configured to be wirelessly charged.

In some specific embodiments, the battery 71 assembly further includes a back adhesive 73 disposed between the fixing bracket 41 and the battery 71, further increasing the relative stability between the battery 71 and the fixing bracket 41.

In some specific embodiments, the battery 71 assembly further includes a heat sink 74 attached to the battery 71, the heat sink 74 is used for dissipating heat of the battery 71, wherein the heat sink 74 may be made of foam.

In one embodiment, referring to fig. 2 and 10, the toothbrush handle 100 further includes an NFC reader 90 disposed in the handle housing 10, the toothbrush head 200 is provided with an NFC tag component 202, the NFC tag component 202 stores therein relevant information of the toothbrush head 200, such as production information, model information, serial number, and type of the toothbrush head 200, and the NFC reader 90 and the NFC tag component 202 communicate with each other to inform a user of the usage of the toothbrush head 200. Specifically, before the brushing of the teeth is started, the NFC reader 90 sends out a predetermined fluctuation frequency (for example, 13.560Mhz radio frequency signal) to read information in the tag of the brush head 200, including a serial number, a production day, a use frequency, and the like, so that a user can conveniently identify the working condition of the brush head 200 and judge whether the brush head has reached the service life; after brushing is complete and before shutdown, the NFC reader 90 writes the brushing data for that use to the NFC tag assembly 202 via a predetermined fluctuation frequency (e.g., 13.560Mhz radio frequency signal).

In some specific embodiments, referring to fig. 10, the NFC component is disposed between the limiting frame 42 and the first clamping portion 142, that is, the distance between the NFC component and the NFC tag component 202 is reduced, and meanwhile, the NFC component is sealed and isolated.

Referring to fig. 2, 14 and 15, the brush head 200 includes a brush head handle 201, an NFC tag component 202 and a cover 203, the brush head handle 201 forms a receiving cavity 2011, and the receiving cavity 2011 has an opening 2012; the NFC tag component 202 is accommodated in the accommodating cavity 2011 through the opening 2012; a cover 203 is attached to the brush head stem 201 to cover the opening 2012.

In this embodiment, accommodate NFC tag component 202 in holding chamber 2011 of brush head handle 201 through uncovered 2012 earlier, cover uncovered 2012 for closing again for closing lid 203 to with the stable restriction of NFC tag component 202 in holding chamber 2011, improved NFC tag component 202 on the one hand and set up the stability at brush head 200, can protect NFC tag component 202 simultaneously, thereby solved among the prior art the poor, the poor technical problem of protectiveness of the equipment stability of NFC tag component 202 on brush head 200.

It should be noted that the brush head handle 201 is provided with bristles 205 to achieve tooth brushing.

In some specific embodiments, the end surface of the cover 203 far away from the NFC tag assembly 202 is flush with the end surface of the brush head handle 201, so that the overall aesthetic appearance of the brush head 200 can be improved, and the increase in the length of the brush head 200 due to the cover 203 can be avoided.

In one embodiment, referring to fig. 14 and 15, the inner wall of the receiving cavity 2011 is formed with a first step 2013, and the cover 203 includes a first abutting portion 2031, where the first abutting portion 2031 is used for pressing the NFC tag assembly 202 against the first step 2013. By the mutual limitation of the first step 2013 and the first abutting portion 2031, the NFC tag assembly 202 is stably clamped in the accommodating cavity 2011, that is, the stable placement of the NFC tag assembly 202 relative to the accommodating cavity 2011 is ensured.

In addition, a second step 2014 is formed on the inner wall of the accommodating cavity 2011, and the cover 203 further comprises a second abutting portion 2032; when the first abutting portion 2031 abuts against the NFC tag assembly 202 on the first step 2013, the second abutting portion 2032 abuts against the second step 2014, so that abutting force of the first abutting portion 2031 on the NFC tag assembly 202 can be limited, and the NFC tag assembly 202 is prevented from being damaged due to overlarge abutting force of the first abutting portion 2031.

Referring to fig. 14 and 15, the brush head 200 further includes a connecting frame 204 received in the receiving cavity 2011, the cover 203 is formed with a first through hole 203a, and the power output shaft 212 of the driving assembly 20 passes through the first through hole 203a and then is connected to the connecting frame 204, so that the brush head 200 is driven to move by the power output shaft 212.

In some specific embodiments, the connecting frame 204 has a first position, the power output shaft 212 has a second position, and the power output shaft 212 passes through the connecting opening 112 of the handle housing 10 and the first through hole 203a of the cover 203 and then is clamped into the connecting frame 204, and the first position and the second position are clamped with each other to connect the power output shaft 212 and the connecting frame 204, i.e., to connect the power output shaft 212 and the brush head 200.

In an embodiment, referring to fig. 14 and fig. 15, the inner wall of the receiving cavity 2011 further forms a third step 2015, and the cover 203 further includes a third abutting portion 2033, where the third abutting portion 2033 is used for pressing the connecting frame 204 against the third step 2015. In the longitudinal direction of the brush head 200, the third abutting portion 2033 of the cover 203 and the third step 2015 are clamped with each other to stably limit the connecting frame 204 in the accommodating cavity 2011, so that the connecting frame 204 is prevented from loosening.

In some embodiments, an ultrasonic process can be used to bond the third abutment 2033 of the cover 203 to the frame 204.

In some specific embodiments, referring to fig. 8, the third abutting portion 2033 is in a ring structure to form a first through hole 203a, so as to increase the abutting area of the third abutting portion 2033 and the connecting frame 204, so as to equalize the abutting force of the third abutting portion 2033 on the connecting frame 204; the first abutting portion 2031 is disposed around the third abutting portion 2033, so as to increase the abutting area between the first abutting portion 2031 and the NFC tag assembly 202, and balance the abutting force of the first abutting portion 2031 on the NFC tag assembly 202; the second abutting portion 2032 is disposed around the first abutting portion 2031, and an abutting area between the second abutting portion 2032 and the second step 2014 is increased, so that abutting force of the second abutting portion 2032 on the second step 2014 is equalized.

Referring to fig. 9, the NFC tag assembly 202 includes an NFC circuit board 2021 sandwiched between the first step 2013 and the first abutting portion 2031, and an NFC chip 2022 disposed on the NFC circuit board 2021. Specifically, the NFC chip 2022 is attached to the NFC circuit board 2021 by a patch process, and then an environmental-friendly and safe waterproof adhesive is applied to an external point of the NFC chip 2022, so that the NFC circuit board 2021 and the NFC chip 2022 form a complete NFC tag assembly 202, and the NFC reader 90 can read information of the NFC chip 2022 and store new information used by the brush head 200 in the NFC chip 2022.

In some specific embodiments, referring to fig. 8, the NFC chip 2022 is disposed on the board surface of the NFC circuit board 2021 opposite to the first abutting portion 2031 to reduce the distance between the NFC chip 2022 and the NFC reader 90; the first abutting portion 2031 is formed with an avoidance notch 2031a for avoiding the NFC chip 2022, that is, when the first abutting portion 2031 abuts against the NFC circuit board 2021, the NFC chip 2022 is correspondingly accommodated in the avoidance notch, which not only ensures the seamless abutting of the first abutting portion 2031 against the NFC circuit board 2021, but also avoids the NFC chip 2022 from being excessively abutted.

In other specific embodiments, the NFC chip 2022 is disposed on the surface of the NFC circuit board 2021 opposite to the first step 2013, and the first step 2013 is formed with an avoidance notch 2031a for avoiding the NFC chip 2022, that is, when the NFC circuit board 2021 is pressed against the first step 2013 by the first abutting portion 2031, the NFC chip 2022 is correspondingly accommodated in the avoidance notch, which not only ensures the seamless abutting of the first step 2013 against the NFC circuit board 2021, but also avoids the NFC chip 2022 from being excessively pressed.

In some specific embodiments, referring to fig. 9 and 14, the NFC circuit board 2021 has a ring structure to form a second through hole 2021a, and the connection bracket passes through the second through hole 2021a and abuts against the third abutting portion 2033; alternatively, the third abutting portion 2033 abuts on the connection bracket through the second through hole 2021 a. Namely, the NFC circuit board 2021 is disposed around the connection bracket, or the NFC circuit board 2021 is disposed around the third abutting portion 2033, so that the NFC circuit board 2021 is prevented from being displaced during assembly, and the assembly tightness of the brush head 200 is improved.

The above examples only show some embodiments of the present invention, which are described in more detail and detail, but not to be construed as limiting the scope of the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A toothbrush handle for connection with a brushhead for driving movement of the brushhead, comprising:

a handle shell;

the driving assembly is accommodated in the handle shell and is provided with a power output shaft which penetrates out of the handle shell and is connected with the brush head;

the control module is accommodated in the handle shell and is electrically connected with the driving assembly;

the washing pressure detection assembly comprises a connecting circuit board and a washing pressure sensor, the connecting circuit board comprises a first board part attached to the power output shaft and a second board part used for being electrically connected with the control module, the washing pressure sensor is electrically connected to the first board part, and the washing pressure sensor is used for detecting the deformation pressure of the power output shaft;

the control module receives pressure detection information of the washing pressure sensor and outputs a control instruction to the driving assembly based on the pressure detection information.

2. The toothbrush handle of claim 1, wherein the power output shaft is formed with a first recess, the first plate portion resting on a floor of the first recess.

3. The toothbrush handle of claim 2, wherein the power output shaft is further formed with a second groove, and the second groove is disposed opposite the first groove.

4. The toothbrush handle according to claim 1, wherein the connection circuit board further comprises a third plate portion connected between the first plate portion and the second plate portion, and the third plate portion extends in an axial direction of the power output shaft to be attached to the power output shaft.

5. The toothbrush handle of claim 4, wherein the control module includes a main control panel disposed alongside the drive assembly;

the second plate part is attached to the main control board and arranged in parallel with the third plate part.

6. The toothbrush handle of claim 5, wherein the connection circuit board further comprises a fourth board portion connected between the second board portion and the third board portion and a fifth board portion connected between the first board portion and the third board portion.

7. The toothbrush handle of claim 6, wherein the drive assembly includes a motor and a front seal, the electrode including a motor body and the power take-off shaft connected to the front body, the seal fitting over the power take-off shaft and sealing the end of the electrode body;

wherein the fourth plate portion is at least partially disposed against the front end seal.

8. The toothbrush handle according to claim 7, wherein the front end sealing member comprises a sealing portion and a clamping portion, the clamping portion and the sealing portion form a clamping opening, and an end portion of the main control board is clamped in the clamping opening;

wherein the second plate portion is arranged side by side with the clamping portion.

9. The toothbrush handle of claim 6, wherein the fifth plate portion is formed by the first plate portion extending along a slot wall of the first recess, and the fifth plate portion extends out of the first recess to connect with the third plate portion.

10. An electric toothbrush, characterized in that it comprises a toothbrush handle according to any one of claims 1 to 9.

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