CN114391996A

CN114391996A - Electric toothbrush handle and electric toothbrush

Info

Publication number: CN114391996A
Application number: CN202111616185.5A
Authority: CN
Inventors: 魏运锋; 刘仕华; 丁前利
Original assignee: Guangzhou Stars Pulse Co Ltd
Current assignee: Guangzhou Stars Pulse Co Ltd
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2022-04-26

Abstract

The application discloses electric toothbrush handle and electric toothbrush. The electric toothbrush handle comprises a shell, an inductance generator, a metal piece and a processor. The shell is internally provided with an installation space and comprises an outer surface, an inner surface and a key area. The button area can take place deformation under the exogenic action. The inductance generator is arranged in the installation space and generates a magnetic field under the condition of introducing alternating current. The metal piece is arranged on the key area and is positioned in the installation space, is opposite to the inductance generator and is arranged at intervals, and the metal piece forms eddy current under the action of a magnetic field generated by the inductance generator. The processor is preset with a threshold value and used for receiving the real-time detection value generated by the inductance generator, confirming that the real-time detection value is an effective touch instruction under the condition that the real-time detection value is larger than the threshold value, and controlling the working state of the electric toothbrush handle according to the effective touch instruction. The electric toothbrush handle utilizes eddy current testing work, can cancel the button, avoids hiding dirty dirt, promotes user experience.

Description

Electric toothbrush handle and electric toothbrush

Technical Field

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

Background

Electric toothbrushes are increasingly accepted by users as personal care electronics. The electric toothbrush mainly utilizes the operation of a motor in the toothbrush to drive a brush head of the electric toothbrush to rotate, and the electric toothbrush can enhance the friction effect of the toothbrush on teeth when a user performs the action of a common toothbrush. In the related art, the electric toothbrush includes a physical button, which is exposed outside the electric toothbrush, and a user can press the physical button to enable the electric toothbrush to implement different operation modes, such as an on/off mode, and the like. However, in the electric toothbrush with the physical buttons, mounting holes for mounting the physical buttons need to be formed in a shell of the electric toothbrush, the electric toothbrush can contact water, toothpaste foam, toothpaste micro particles and the like every day, the electric toothbrush is accumulated every day, and toothpaste powder, stains and bacteria are hidden in the positions where the physical buttons and the mounting holes are located. Is unfavorable for personal hygiene of users.

Disclosure of Invention

The application discloses electric toothbrush handle and electric toothbrush.

An electric toothbrush handle of an embodiment of the present application includes a housing, an inductance generator, a metal piece, and a processor. Be equipped with installation space in the casing, the casing includes surface and internal surface, the casing includes the button district, can take place deformation under the exogenic action according to the button district. The inductance generator is arranged in the installation space and generates a magnetic field under the condition of introducing alternating current. The metal piece is arranged on the key area and positioned in the installation space, the metal piece and the inductance generator are arranged oppositely and at intervals, and the metal piece forms eddy current under the action of a magnetic field generated by the inductance generator. The processor is preset with a threshold value and used for receiving a real-time detection value generated by the inductance generator, confirming that the real-time detection value is an effective touch instruction under the condition that the real-time detection value is larger than the threshold value, and controlling the working state of the electric toothbrush handle according to the effective touch instruction.

The electric toothbrush handle of the embodiment of the application identifies and judges the distance between the metal piece and the inductance generator through the magnetic field change generated by the eddy current inductance of the inductance generator, and then judges whether the pressure operation to the electric toothbrush handle exists or not. And then the function control of the electric toothbrush handle is realized through the control of the processor. The electric toothbrush handle can adopt an integrated structure of seamless keys, physical entity keys are cancelled, key gaps on the surface are removed, the risk of storing dirty dirt is avoided, and the difference of the pressing force of the keys caused by different thicknesses and hardness of the key positions is avoided.

In some embodiments, the threshold value is a real-time detection value generated by the inductance generator and received by the processor when 40 grams of external force is applied to the key area.

In certain embodiments, the ratio of the threshold value to the real-time detection value ranges from 1/5 to 2/3.

In some embodiments, the inductance generator is spaced from the metallic article by a distance of less than or equal to 2 mm.

In some embodiments, the housing includes a non-key area, the non-key area being connected to the key area, and the thickness of the key area being less than the thickness of the non-key area.

In some embodiments, the key area is recessed from the outer surface to the inner surface to form a groove; and/or the key area is recessed from the inner surface to the outer surface to form a groove.

In some embodiments, the thickness of the key region ranges from 0.8mm to 1.2 mm.

In some embodiments, the housing is cylindrical, the number of the inductance generators is multiple, the inductance generators are arranged at intervals along the axial direction of the housing, the number of the metal pieces is multiple, and the metal pieces and the inductance generators are arranged in a one-to-one correspondence manner.

In some embodiments, the distance between the centers of two adjacent inductance generators is less than or equal to 30 mm.

In some embodiments, the inductance generator includes a coil in the form of a ring-shaped structure that increases in size as a helix progresses from one end of the coil to the other end of the coil.

In some embodiments, the metal member is in a sheet shape, and the metal member is attached to the inner surface of the key region.

In some embodiments, an adhesive is disposed between the metal piece and the inner surface, the adhesive bonding the metal piece and the inner surface.

In some embodiments, the projection of the metallic article on a plane on which the inductance generator is mounted is a first projection, and the projection of the inductance generator on the plane is a second projection, the first projection overlapping the second projection.

In some embodiments, a ratio of an area of the first projection to an area of the second projection is greater than 1 and less than 3.

In some embodiments, the electric toothbrush handle includes a core support and a circuit board, the core support and the circuit board being disposed in the installation space, the circuit board being disposed on the core support, the core support being connected to the case, the inductance generator being disposed on the circuit board and electrically connected to the circuit board.

In some embodiments, the inductance generator includes first and second opposing surfaces, the first surface being mounted on the mounting surface of the circuit board, the first and second surfaces each being parallel to the mounting surface of the circuit board.

The electric toothbrush of the present embodiment includes an electric toothbrush handle and a toothbrush head. The electric toothbrush handle is the electric toothbrush handle in any one of the above embodiments. The toothbrush head is detachably mounted on the electric toothbrush handle.

The electric toothbrush of this application embodiment has the eddy current testing function after being equipped with the electric toothbrush handle, and the eddy current testing technique can cancel physics and flexible glue button, avoids hiding dirty and holding dirt, promotes user experience, makes the product more have science and technology to feel.

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

Drawings

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

FIG. 1 is a schematic plan view of a powered toothbrush handle of an embodiment of the present application;

FIG. 2 is a schematic sectional view showing the construction of a motorized toothbrush handle according to an embodiment of the present application;

FIG. 3 is a graph showing a graph of the detection values of the electric toothbrush handle according to the embodiment of the present application in various states;

FIG. 4 is a schematic sectional view of a partial structure of a motorized toothbrush handle according to an embodiment of the present application;

FIG. 5 is an enlarged view of the powered toothbrush handle of FIG. 4 at A;

FIG. 6 is a schematic view of a powered toothbrush handle according to an embodiment of the present application from a certain perspective;

FIG. 7 is a schematic view of the motorized toothbrush handle of the present application with the housing removed;

FIG. 8 is a schematic plan view of an inductance generator of a motorized toothbrush handle of an embodiment of the present application mounted on a circuit board;

FIG. 9 is a schematic plan view of an inductance generator according to an embodiment of the present application;

FIG. 10 is a schematic view of a projection of an inductance generator and metal components of a motorized toothbrush handle according to an embodiment of the present application onto a circuit board;

fig. 11 is a schematic view of the structure of the electric toothbrush according to the embodiment of the present application.

Description of the main element symbols:

electric toothbrush 1000, electric toothbrush handle 100, casing 10, installation space 11, outer surface 12, inner surface 13, button area 14, groove 141, non-button area 15, induction generator 20, first surface 21, second surface 22, coil 23, metal piece 30, first projection 31, second projection 32, treater 40, motor 50, viscose 60, core support 70, circuit board 80, installation face 81, toothbrush head 200.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar 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 accompanying drawings are illustrative and are only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. 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 following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Referring to fig. 1 to 3, a power toothbrush handle 100 according to an embodiment of the present invention includes a case 10, an induction generator 20, a metal member 30, and a processor 40.

The shell 10 is provided with a mounting space 11 therein, the shell 10 includes an outer surface 12 and an inner surface 13, the shell 10 includes a key region 14, and the key region 14 can deform under the action of an external force.

An induction generator 20 is arranged in the installation space 11, the induction generator 20 generating a magnetic field in the event of an alternating current being supplied.

The metal member 30 is installed on the key region 14 and located in the installation space 11, the metal member 30 is opposite to the inductance generator 20 and spaced apart from the inductance generator 20, and the metal member 30 forms an eddy current under the action of a magnetic field generated by the inductance generator 20.

The processor 40 is preset with a threshold, and the processor 40 is configured to receive the real-time detection value generated by the inductance generator 20, confirm the real-time detection value as an effective touch command if the real-time detection value is greater than the threshold, and control the operating state of the electric toothbrush handle 100 according to the effective touch command.

The electric toothbrush handle 100 according to the embodiment of the present invention recognizes and determines the distance between the metal member 30 and the inductance generator 20 through the change of the magnetic field generated by the eddy current inductance of the inductance generator 20, and then determines whether there is a pressure operation on the electric toothbrush handle 100, and then controls the function of the electric toothbrush handle 100 through the processor 40. So, electric toothbrush handle 100 can adopt seamless button's an organic whole structure, cancels the physical entity button, has got rid of surperficial button gap, has avoided the risk of hiding dirty dirt, has avoided the difference of the dynamics size that the button that the thickness and the hardness difference of button position lead to pressed.

Specifically, the case 10 of the power toothbrush handle 100 may be an outermost closed structure of the power toothbrush handle 100. The outer surface 12 of the housing 10 may be a surface of the housing 10 that contacts the outside. The inner surface 13 of the housing 10 may be the surface of the housing facing the center of the motorized toothbrush handle 100. The space surrounded by the inner surface 13 of the housing 10 may be the installation space 11 of the housing 10. The key region 14 of the housing 10 may be a partial region of a recessed area of the housing 10. The key area 14 may have elasticity, and the key area 14 may be deformed by external force pressing or the like. The deformation causes the inner surface 13 of key region 14 to move closer to the center of powered toothbrush handle 100.

The induction generator 20 may be an element that converts electrical energy into magnetic energy. The induction generator 20 can be arranged in the installation space 11 close to the area of the key field 14. When alternating current is applied to the induction generator 20, the induction generator 20 may generate a magnetic field. The magnetic field generated by the induction generator 20 may induce eddy currents.

The metal member 30 may be made of conductive metal material, such as copper foil, aluminum foil, etc., which are produced at low cost. The metal member 30 may be disposed in an upper region of the inductance generator 20 in the installation space 11, and the metal member 30 may be connected to the key region 14 of the housing 10. For example, the metal member 30 may be connected to the key region 14 of the casing 10 by a connection method such as adhesion, welding, or snap connection. The metal member 30 may be located at a position corresponding to the inductance generator 20, and the metal member 30 and the inductance generator 20 may have a certain space therebetween. The region of the metal piece 30 may be subjected to a magnetic field generated by the induction generator 20 and generate eddy currents under the magnetic field.

The detection of eddy currents can be one of many methods of non-destructive inspection, which can apply the basic theory of electromagnetism as the basis for conductor inspection. The generation of eddy currents results from an electromagnetic induction phenomenon. When an alternating current is applied to a conductor, such as a copper wire, a magnetic field is generated within the conductor and in the space surrounding the conductor. Eddy currents are induced currents that flow in a loop.

In the embodiment of the present application, the metal member 30 is placed in the magnetic field varied by the induction generator 20, eddy currents are generated in the metal member 30, and the eddy currents also generate their own magnetic field, which expands as the alternating current increases and decreases as the alternating current decreases; if the original alternating magnetic field excitation current is not changed, the original alternating magnetic field is adversely affected by the generation of the internal eddy current due to the approach of the metal piece 30, and the distance between the metal piece 30 and the inductance generator 20 can be determined by how much the eddy current changes the original alternating magnetic field.

According to the principles of electromagnetism, the resonance frequency is:

if L is changed, the resonant frequency will change accordingly. From this equation and the foregoing description of eddy currents, it is known that when a metal is brought into close proximity to the induction generator 20, eddy currents are generated which affect the original alternating magnetic field and thus change the value of L.

Processor 40 may be a Central Processing Unit (CPU) operable to process and compare received signal data. Processor 40 may be configured with a threshold (as shown in fig. 3) that may be used to compare with the real-time sensed data values of inductance generator 20.

Illustratively, the relative distance between the metal member 30 and the inductance generator 20 can be kept constant when the key region 14 is pressed without an external force. The induction generator 20 can generate a relatively stable magnetic field and eddy current under the action of alternating current. Similarly, the turbine and the magnetic field generated by the metal member 30 under the magnetic field of the induction generator 20 can be kept relatively stable. The relative distance between the inductance generator 20 and the metal piece 30 is constant, so that the magnetic field and the eddy current generated by the cooperation of the inductance generator 20 and the metal piece 30 are in a relatively stable state. The processor 40 may receive real-time sensed data, translate the sensed data to a particular signal value, and compare the signal value to a threshold value. The value of the signal at this time may be less than the threshold value and the operation of the power toothbrush handle 100 may not occur.

When the key region 14 is pressed by an external force, the relative distance between the metal member 30 and the inductance generator 20 can be reduced. The metal member 30 is gradually close to the inductance generator 20 by the external force which is gradually increased and acts on the key region 14. The magnetic field and eddy currents of the metal piece 30 may gradually affect the magnetic field and eddy currents of the induction generator 20. Further, the signal values of the real-time detection data received by the processor 40 will gradually approach until a threshold value is exceeded. When the signal value exceeds the threshold value, the power toothbrush 1000 may begin operating under the control of the processor 40.

Referring to fig. 1-3, in some embodiments, the threshold value is a real-time detection value generated by the inductance generator 20 received by the processor 40 when an external force of 40 grams is applied to the key region 14.

In this way, since the electric toothbrush handle 100 operates under the action of the external force, the threshold value is associated with the magnitude of the external force, and the threshold value preset by the processor 40 can filter out slight interference external force, so that the accuracy of the processor 40 in controlling the operation of the electric toothbrush handle 100 can be improved.

Specifically, the real-time detection value of the inductance generator 20 received by the processor 40 under the action of the external force of a certain value in the key area 14 can be set as the standard as the threshold value.

In the embodiment of the present application, when the acting force of the human hand pressing the key area 14 is less than 40 g, at this time, it may be that the user accidentally touches the key area 14, the processor 40 receives that the real-time detection value generated by the inductance generator 20 does not reach the threshold value, the processor 40 confirms that the real-time detection value is an invalid touch instruction, and the processor 40 does not control the electric toothbrush handle 100 to work. When the force of the human hand pressing the button area 14 is greater than or equal to 40 g, the processor 40 receives that the real-time detection value generated by the inductance generator 20 is greater than or equal to the threshold value, the processor 40 determines that the real-time detection value is an effective touch instruction, and at this time, the processor 40 controls the electric toothbrush handle 100 to work according to the effective touch instruction. In this manner, the threshold value may be set to filter the interference generated by pressing the key region 14 by an abnormal external force.

Referring to fig. 2 and 3, in some embodiments, the ratio of the threshold value to the real-time detection value ranges from 1/5 to 2/3.

Thus, the ratio of the threshold to the real-time detected data is 1/5-2/3, and within this range, the recognition accuracy of the processor 40 is such that it can be recognized without requiring a user to press it hard, which also reduces the cost of production.

In particular, the threshold value may be ratioed to the real-time detection value and may optionally be between 1/5-2/3. When the ratio of the threshold value to the real-time detection value is smaller than 1/5, the motor 50 can generate a magnetic field and an eddy current in the working process, so that the real-time detection value generated by interference can exceed the threshold value, and the user can be identified by mistake, which is not beneficial to the user experience. When the ratio of the threshold value to the real-time detection value is greater than 2/3, the real-time detection value reaches the threshold value and needs a higher value, and the user needs to press hard to be identified, so that the precision requirement on the processor 40 is high.

In some embodiments, the electric toothbrush handle 100 includes the motor 50 disposed in the installation space 11. Specifically, the motor 50 may be located at an end of the installation space 11 near a position where the brush head is installed, and may serve as a power unit for the power toothbrush handle 100. The magnetic field generated by the motor 50 during operation may affect the magnetic field and eddy currents of the induction generator 20 and the metal piece 30. Similarly, when the external force applied to the key region 14 is small, the magnetic field and eddy current of the induction generator 20 and the metal member 30 may be interfered.

Referring to fig. 4 and 5, in some embodiments, the distance L1 between the inductor generator 20 and the metal piece 30 is less than or equal to 2 mm.

Thus, the smaller spacing distance enables the metal member 30 to approach the inductor generator 20 when an external force presses the key region 14, and enables the pressing deformation of the key region 14 to be effective. If the distance between the inductance generator 20 and the metal member 30 is too large, the magnetic field and the eddy current of the metal member 30 cannot affect the magnetic field and the eddy current of the inductance generator 20 or the change value is small, and the processor 40 cannot identify or cannot identify accurately.

Specifically, the inductance generator 20 and the metal member 30 may be disposed opposite to each other in the installation space 11. Metal piece 30 is arranged on inner surface 13 of casing 10 in the area of key area 14. An end surface of the metal member 30 may face the inside of the mounting space 11 and may correspond to an upper end surface of the inductance generator 20. There may be a spatial separation between the inductance generator 20 and the metallic piece 30. The separation distance L1 may be the distance between the mutually opposing planes of the metallic piece 30 and the inductance generator 20.

The separation distance L1 may be selected to be less than or equal to 2 mm. Further, when the spacing distance L1 is less than 2mm, the distance between the metal member 30 and the inductance generator 20 is too small, and when the key region 14 is pressed by a large amount, the metal member 30 may touch and interfere with the inductance generator 20, which affects the normal operation. When the separation distance L1 is greater than 2mm, the distance between the inductance generator 20 and the metal member 30 is too large, the interaction between the magnetic field between the inductance generator 20 and the metal member 30 and the eddy current is small, and the processor 40 needs to recognize with high precision, or the user needs to press a large force, which is not beneficial to the user operation.

Referring to fig. 4 and 5, in some embodiments, the casing 10 includes a non-key region 15, the non-key region 15 is connected to the key region 14, and a thickness H1 of the key region 14 is smaller than a thickness H2 of the non-key region 15.

In this way, the non-key area 15 with a larger thickness on the casing 10 can ensure the overall strength of the casing 10. The thickness of the key area 14 is smaller than that of the non-key area 15, so that the area division can be improved, and the operation experience of a user is improved.

Specifically, the cross-section of the casing 10 may be annular, and the whole casing 10 may have a cylindrical structure such as a cylindrical structure or an elliptic cylindrical structure. The non-key area 15 is an integral part of the housing 10. The key area 14 is a recessed portion of the casing 10, and the key area 14 and the non-key area 15 together constitute the casing 10. The thickness H1 of key region 14 is the perpendicular distance of casing 10 from the portion of exterior surface 12 of key region 14 to interior surface 13 of casing 10. Similarly, the thickness H2 of the non-key region 15 is the perpendicular distance along the exterior surface 12 of the non-key region 15 of the housing 10 to the interior surface 13 of the housing 10. Since the key region 14 is a recessed portion, the thickness H1 of the key region 14 is smaller than the thickness H2 of the non-key region 15.

Referring to fig. 4 and 5, in some embodiments, the key area 14 is recessed from the outer surface 12 to the inner surface 13 to form a groove 141; and/or key region 14 is recessed from interior surface 13 toward exterior surface 12 to form recess 141.

Thus, the wall thickness of the key area 14 on the casing 10 is thinner than that of the non-key area 15, which is beneficial for generating local micro-deformation when the key area 14 is pressed, so that the metal piece 30 is easier to generate spatial micro-displacement, and therefore, an inductance change value is generated, and the inductance variable is easier to be identified.

Specifically, the depression direction of the key region 14 may be a plane portion of the outer surface 12 of the casing 10 that is depressed toward the inner surface 13 of the casing 10, and may form a partial groove 141. The recess 141 may be partially provided as the key region 14. The depression direction of the key region 14 may also be a plane portion of the inner surface 13 of the casing 10 that is depressed toward the outer surface 12 of the casing 10, and a partial groove 141 portion on the inner surface 13 may be formed, and the groove 141 portion may be set as the key region 14. Further, the groove 141 of the key region 14 may be formed such that the outer surface 12 and the inner surface 13 of the casing 10 are recessed in the direction opposite to each other, and the groove 141 is formed as the key region 14 on both the outer surface 12 and the inner surface 13 of the casing 10.

Referring to fig. 4 and 5, in some embodiments, the thickness H1 of key region 14 ranges from 0.8mm to 1.2 mm.

Therefore, the wall thickness of the non-key area 15 in a certain range can be easily pressed to deform, the strength of the key area 14 can be ensured, and the problem that water leakage and the like possibly occur due to breakage after multiple times of pressing is avoided, so that the use of a user is influenced.

Specifically, the range of thickness H1 of key region 14 may be selected to be 0.8-1.2 mm. Further, when thickness H1 of key region 14 is less than 0.8mm, key region 14 is easily broken by external impact, multiple strong pressing, or other conditions. When the thickness of the key area 14 is larger than 1.2mm, the thickness of the key area 14 is larger, and the deformation caused by normally pressing the key area 14 by a user is smaller, which is not beneficial to detection and identification.

Referring to fig. 6 and 7, in some embodiments, the housing 10 is cylindrical, the number of the inductance generators 20 is multiple, the inductance generators 20 are arranged at intervals along the axial direction of the housing 10, the number of the metal members 30 is multiple, and the metal members 30 and the inductance generators 20 are arranged in a one-to-one correspondence.

Thus, the plurality of inductance generators 20 correspond to the plurality of metal members 30, and the range of the key area 14 is enlarged, so that the selectable mode or intensity setting of the key area 14 can be multi-polarized. The arrangement of the plurality of induction generators 20 can also make the influence change of the magnetic field and the eddy current more obvious and the processor 40 can identify the change more accurately.

Specifically, the columnar case 10 may be provided with a key region 14 along the length direction. The number of key areas 14 may be provided in plural. A plurality of metal members 30 may be correspondingly connected to the plurality of key regions 14 toward the center of the installation space 11. One side of the plurality of metal members 30 toward the center of the installation space 11 may be opposite to the plurality of induction generators 20 one by one. In other embodiments, when one inductance generator 20 is sufficient, the inductance generator 20 may be provided as one. It is understood that a metal part 30 can be connected to a key region 14 on the inner surface 13 of the housing 10, and that an inductance generator 20 can be arranged on a metal part 30 in the opposite direction to the installation space 11.

Referring to fig. 8, in some embodiments, the distance L2 between the centers of two adjacent induction generators 20 is less than or equal to 30 mm.

Therefore, a certain distance is kept between the inductance generators 20 and the distance is not too far, so that the change of the influence change value of the formed magnetic field and eddy current is not too small when the key area 14 corresponding to the distance between the inductance generators 20 is operated, and the identification is facilitated.

Specifically, two adjacent inductance generators 20 may be arranged in parallel at intervals in the installation space 11. The center of the inductance generator 20 may be the center of the circle of the circular structure of the inductance generator 20. The distance L2 between the centers of two adjacent induction generators 20 may be selected to be less than or equal to 30 mm. Further, when the distance L2 between the centers of two adjacent induction generators 20 is greater than 30mm, the change value of the magnetic field and eddy current formed by the pressing operation in the corresponding key region 14 between the two induction generators 20 is small and is not easily recognized.

Referring to fig. 9, in some embodiments, the inductance generator 20 includes a coil 23, and the coil 23 is a ring structure with a gradually increasing spiral size from one end of the coil 23 to the other end of the coil 23.

In this manner, the toroidal configuration enables the induction generator 20 to generate a stable magnetic field when energized.

Specifically, the coil 23 of the inductance generator 20 may have both ends. One end of the coil 23 may be disposed at a central region of the inductance generator 20. The other end of the coil 23 may extend spirally along the plane of the inductance generator 20 from one end of the central region of the coil 23, and may gradually increase in size. The end of the coil 23 where the coil 23 ends to extend is the other end of the coil 23.

Referring to fig. 5-7, in some embodiments, the metal member 30 is in the shape of a sheet, and the metal member 30 is attached to the inner surface 13 of the key region 14.

In this way, the sheet-like metal fitting 30 can be easily attached to the inner surface 13 of the housing 10, and the sheet-like structure increases the working area of the metal fitting 30. The larger area of the metal piece 30 with the sheet structure can also form stronger magnetic field and eddy current, so that the change value of the magnetic field and eddy current of the affected inductance generator 20 is also larger and easier to be identified.

Specifically, the metal member 30 may have a sheet-like structure. It will be appreciated that the ratio of the thickness of the sheet metal member 30 to the length or width of the metal member 30 may approach zero. At this time, the sheet metal member 30 may have a large working area. Meanwhile, the metal member 30 may be connected to the inner surface 13 of the housing 10 in a region corresponding to the key region 14. For example, the metal member 30 may be attached to the inner surface 13 by attaching, bonding, welding, or the like.

Referring to fig. 5-7, in some embodiments, an adhesive 60 is disposed between the metal member 30 and the inner surface 13, and the adhesive 60 adheres the metal member 30 and the inner surface 13.

In this way, the metal member 30 is bonded to the inner surface 13 of the housing 10, so that the metal member 30 and the inner surface 13 of the housing 10 are uniformly contacted and uniformly stressed. The adhesive 60 also protects the metal piece 30 and the portion of the adhesive 60 that is connected to the adhesive from water, air, or other corrosive agents in the environment.

Specifically, the glue 60 may be a glue that bonds metal to other materials. For example, it may be a metal adhesive. Metal adhesives can be classified into structural metal adhesives and non-structural metal adhesives. The structural metal adhesive can be epoxy or epoxy modified adhesive, acrylic acid adhesive, copper phosphate inorganic adhesive and the like. The non-structural adhesive bonds may include silicone, hot melt, polyurethane, and the like.

The glue 60 can act on the surface of the metal piece 30 that is in contact with the inner surface 13 of the housing 10. The adhesive 60 can adhere the metal member 30 to the inner surface 13 corresponding to the key region 14, and when the key region 14 is deformed by an external force, the metal member 30 can move synchronously.

Referring to fig. 10, in some embodiments, a projection of the metal member 30 on a plane where the inductance generator 20 is installed is a first projection 31, a projection of the inductance generator 20 on the plane is a second projection 32, and the first projection 31 covers the second projection 32.

In some embodiments, the ratio of the area of the first projection 31 to the area of the second projection 32 is greater than 1 and less than 3.

Thus, the planar area of the metal member 30 is larger than that of the inductance generator 20, so that the magnetic field and eddy current of the inductance generator 20 can be within the range of the metal member 30. The detection value of the key area 14 when the distance between the metal member 30 and the inductance generator 20 changes due to the action of external force can be more easily identified.

In particular, the projection of the metallic piece 30 and the projection of the inductance generator 20 may both be on the plane on which the inductance generator 20 is connected. The first projection 31 of the metal piece 30 may be rectangular, square, irregular, etc. The second projection 32 of the inductance generator 20 may be in a circular, elliptical, or irregular planar pattern, etc. The ratio of the area of the first projection 31 to the area of the second projection 32 may be chosen to be between 1 and 3. Further, when the ratio of the area of the first projection 31 to the area of the second projection 32 is smaller than 1, the metal component 30 and the inductance generator 20 are less likely to be affected. When the ratio of the area of the first projection 31 to the area of the second projection 32 is greater than 3, the area of the metal member 30 is too large, and the parts of part of the metal member 30 cannot function, thereby increasing the cost.

Referring to fig. 4 and 5, in some embodiments, the power toothbrush handle 100 includes a movement holder 70 and a circuit board 80, the movement holder 70 and the circuit board 80 are disposed in the installation space 11, the circuit board 80 is disposed on the movement holder 70, the movement holder 70 is connected to the case 10, and the inductance generator 20 is disposed on the circuit board 80 and electrically connected to the circuit board 80.

Thus, cartridge holder 70 may be used to secure the cartridge to make the cartridge of power toothbrush handle 100 more stable during operation. The disposition of both the cartridge holder 70 and the circuit board 80 in the installation space 11 facilitates the interconnection between the circuit board 80 and the internal elements of the power toothbrush handle 100.

Specifically, the deck chassis 70 may be a chassis structure below the circuit board 80 in the installation space 11. The movement bracket 70 may be connected to the housing 10 by one or more of a snap connection, a bolt connection, and the like. The inductance generator 20 can be directly connected to the circuit board 80 by soldering, wire bonding, or other electrical connection means.

Referring to fig. 8, in some embodiments, the inductance generator 20 includes a first surface 21 and a second surface 22 opposite to each other, the first surface 21 is mounted on a mounting surface 81 of the circuit board 80, and both the first surface 21 and the second surface 22 are parallel to the mounting surface 81 of the circuit board 80.

In this way, the first surface 21 and the second surface 22 are both parallel to the mounting surface 81 of the circuit board 80, and the thickness dimension of both the circuit board 80 and the inductance generator 20 can be reduced as compared with other mounting methods.

In particular, the first surface 21 of the inductance generator 20 may be the surface of the inductance generator 20 facing the metal piece 30. The second surface 22 of the inductance generator 20 may be a surface of the inductance generator 20 that is in direct contact with the circuit board 80. The first surface 21 may lie in a plane parallel to the plane of the second surface 22. The mounting surface 81 may be a surface of the circuit board 80 to which the inductance generator 20 is connected, and the mounting surface 81 may be in a plane where the first surface 21 and the second surface 22 are parallel.

Referring to fig. 11, a power toothbrush 1000 according to an embodiment of the present application includes a power toothbrush handle 100 and a toothbrush head 200. Powered toothbrush handle 100 is powered toothbrush handle 100 in any of the embodiments described above. Head 200 is detachably mounted to handle 100.

The electric toothbrush 1000 of the embodiment of the application has the eddy current testing function after being provided with the electric toothbrush handle 100, the eddy current testing technology can cancel the key, avoid hiding dirty and dirty, improve the user experience, and enable the product to have more scientific and technological senses.

Specifically, a portion of the cartridge holder 70 of the power toothbrush handle 100, which extends out of the case 10, is inserted with a toothbrush head 200. The assembly of head 200 to powered toothbrush handle 100 may constitute powered toothbrush 1000.

In the description herein, references to the description of the terms "one embodiment," "certain embodiments," "an illustrative embodiment," "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 present application. In this specification, schematic representations of the above terms 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.

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

Claims

1. A powered toothbrush handle, comprising:

the key comprises a shell, wherein an installation space is arranged in the shell, the shell comprises an outer surface and an inner surface, the shell comprises a key area, and the key area can deform under the action of an external force;

the inductance generator is arranged in the installation space and generates a magnetic field under the condition of introducing alternating current;

the metal piece is arranged on the key area and positioned in the installation space, the metal piece and the inductance generator are arranged oppositely and at intervals, and the metal piece forms eddy current under the action of a magnetic field generated by the inductance generator;

the processor is used for receiving a real-time detection value generated by the inductance generator, confirming that the real-time detection value is an effective touch instruction under the condition that the real-time detection value is larger than the threshold value, and controlling the working state of the electric toothbrush handle according to the effective touch instruction.

2. The electric toothbrush handle of claim 1, wherein the threshold value is a real-time detection value generated by the inductance generator received by the processor with 40 grams of external force applied to the button area.

3. The electric toothbrush handle of claim 1, wherein a ratio of the threshold value to the real-time detection value ranges from 1/5-2/3.

4. The motorized toothbrush handle according to claim 1, wherein the inductance generator is spaced from the metal member by a distance of less than or equal to 2 mm.

5. The powered toothbrush handle of claim 1, wherein the housing includes a non-key area, the non-key area being connected to the key area, the key area having a thickness less than a thickness of the non-key area.

6. The motorized toothbrush handle according to claim 5, wherein the key region is recessed from the outer surface to the inner surface to form a recess; and/or the key area is recessed from the inner surface to the outer surface to form a groove.

7. The powered toothbrush handle of claim 5, wherein the key area has a thickness in a range of 0.8mm to 1.2 mm.

8. The electric toothbrush handle according to claim 1, wherein the case is cylindrical, the number of the inductance generators is plural, the plural inductance generators are arranged at intervals in an axial direction of the case, the number of the metal members is plural, and the metal members and the inductance generators are arranged in one-to-one correspondence.

9. The motorized toothbrush handle of claim 8, wherein the distance between the centers of two adjacent induction generators is less than or equal to 30 mm.

10. The motorized toothbrush handle of claim 1, wherein the inductance generator comprises a coil having an annular configuration with a gradually increasing spiral dimension from one end of the coil to the other end of the coil.

11. The toothbrush handle of claim 1, wherein the metallic member is in the form of a sheet, the metallic member being attached to an inner surface of the button section.

12. The motorized toothbrush handle of claim 11, wherein an adhesive is disposed between the metal member and the inner surface, the adhesive bonding the metal member and the inner surface.

13. The motorized toothbrush handle according to claim 1, wherein a projection of the metal member on a plane on which the inductance generator is mounted is a first projection, and a projection of the inductance generator on the plane is a second projection, the first projection overlapping the second projection.

14. The motorized toothbrush handle according to claim 13, wherein a ratio of the area of the first projection to the area of the second projection is greater than 1 and less than 3.

15. The electric toothbrush handle according to claim 1, comprising a core holder and a circuit board, the core holder and the circuit board being disposed in the installation space, the circuit board being disposed on the core holder, the core holder being connected to the case, the inductance generator being disposed on the circuit board and electrically connected to the circuit board.

16. The motorized toothbrush handle of claim 15, wherein the inductance generator includes first and second opposing surfaces, the first surface being mounted on the mounting surface of the circuit board, the first and second surfaces each being parallel to the mounting surface of the circuit board.

17. An electric toothbrush, comprising:

the motorized toothbrush handle of any one of claims 1-16;

a toothbrush head detachably mounted on the electric toothbrush handle.