Electric toothbrush head

Abstract

The present application provides an electric toothbrush head, relating to the field of electric toothbrushes. The electric toothbrush head comprises a brush head main body, an electric element, and a motor shaft linkage member. The electric element is disposed within the brush head main body. The motor shaft linkage member is disposed within the brush head main body, and is in linkage connection with a motor shaft of a motor inside an electric toothbrush. A first electrical contact and a second electrical contact are provided on the motor shaft linkage member. One end of the first electrical contact is conductively connected to the electric element, and the other end is conductively connected to a power supply element of the electric toothbrush. One end of the second electrical contact is conductively connected to the electric element, and the other end is conductively connected to the power supply element of the electric toothbrush. In the present embodiment, the first electrical contact and the second electrical contact are disposed on the motor shaft linkage member; structurally, the motor shaft linkage member is installed in the brush head main body and connected thereto, and electrically, the two electrical contacts are conductively connected to positive and negative electrodes of the electric element within the brush head main body, thereby achieving stable structural assembly and convenient electrical conduction.

Description

Electric toothbrush heads Technical Field

[0001] The present invention relates to the field of electric toothbrushes, and in particular provides an electric toothbrush head. Background Art

[0002] With the development of intelligent society, more and more electrical appliances are entering the public's lives. As living standards improve, more and more consumers are paying attention to oral health issues. For example, electric toothbrushes, which use a sonic motor as a driving force, generate high-frequency reciprocating vibrations of a certain amplitude to drive the brush head to oscillate at high frequencies, thereby achieving tooth cleaning and greatly improving daily life. Currently, there are few electric toothbrushes on the market with illuminated brush heads and other functions. Most are conventional electric toothbrushes. A few blue-light or red-light electric toothbrushes often require significant modifications to the motor output shaft to complete the power supply wiring, making the structure complex. Alternatively, the addition of parts or changes in motor type can significantly reduce motion transmission efficiency, thereby reducing the amplitude and frequency of the brush head's oscillation. For example, Chinese patent CN 215019476 U describes a sonic electric toothbrush structure with sterilization and blue-light whitening. This structure uses a wireless charging coil for power supply, which inevitably increases the number of parts, resulting in unsatisfactory brush head oscillation. Alternatively, to accommodate the conductive components, the brush head and motor output shaft increase in size, reducing the user experience. To address this issue, the present invention has been developed.

[0003] Summary of the Invention

[0004] In view of the above, based on one aspect, the present invention aims to solve the problem that the power supply structure of the sonic motor in the electric toothbrush on the market is relatively complex, requiring major changes to the motor output shaft, thereby affecting the motion transmission efficiency.

[0005] Based on another aspect, the present invention aims to solve the problem that the power supply structure of the sonic motor in some electric toothbrushes on the market has complex wiring and cannot be assembled.

[0006] Based on another aspect, the present invention aims to solve the problem that the sonic motor in some electric toothbrushes on the market needs to change the spatial structure of the motor output shaft or the brush head to accommodate the conductive components.

[0007] To solve one of the problems, the present invention provides an electric toothbrush head, characterized in that it includes:

[0008] Brush head body;

[0009] An electrical component, the electrical component being disposed in the brush head body;

[0010] A machine shaft linkage component, which is arranged in the brush head body and is linked to the motor shaft of the motor in the electric toothbrush; a first power connection component and a second power connection component are provided on the machine shaft linkage component, one end of the first power connection component is conductively connected to the power-consuming element, and the other end is conductively connected to the power supply element of the electric toothbrush; one end of the second power connection component is conductively connected to the power-consuming element, and the other end is conductively connected to the power supply element of the electric toothbrush.

[0011] Preferably, the brush head body includes a bristle assembly and a brush head handle, the bristle assembly is assembled on the brush head handle, and the position of the electrical component corresponds to the bristle assembly; the brush head handle also has a first plug-in cavity for the machine shaft linkage to be plugged in and linked; the machine shaft linkage has a second plug-in cavity for the motor shaft to be plugged in and linked.

[0012] Preferably, the machine shaft linkage is relatively limited in circumferential direction with the brush head handle through a first circumferential limiting mechanism, and the machine shaft linkage is relatively limited in axial direction with the brush head handle through a first axial limiting mechanism.

[0013] Preferably, the first circumferential limiting mechanism includes a first circumferential limiting rib and a first circumferential limiting groove; the first circumferential limiting rib and the first circumferential limiting groove are respectively arranged on the inner wall of the first plug-in cavity and the outer wall of the machine shaft linkage.

[0014] Preferably, the first axial limiting mechanism includes a first axial limiting rib and a first axial limiting groove; the first axial limiting rib and the first axial limiting groove are respectively arranged on the outer wall of the machine shaft linkage and the inner wall of the first plug-in cavity.

[0015] Preferably, the first axial limit groove is a first annular groove, which is arranged on the inner wall of the first plug-in cavity near the opening, and the first axial limit rib is a first annular rib, which is arranged on the outer wall of the machine shaft linkage and can be interference fit into the first annular groove.

[0016] Preferably, the motor shaft is inserted into the second plug-in cavity, the motor shaft is relatively circumferentially limited with the machine shaft linkage through a second circumferential limiting mechanism, and the motor shaft is relatively axially limited with the machine shaft linkage through a second axial limiting mechanism.

[0017] Preferably, the second circumferential limiting mechanism includes a second circumferential limiting step surface and a second circumferential limiting rib; the second circumferential limiting step surface is formed on the motor shaft, and the second circumferential limiting rib is arranged on the inner wall of the second plug-in cavity, and the second circumferential limiting rib is pressed against the second circumferential limiting step surface to limit relative circumferential rotation.

[0018] Preferably, the second axial limiting mechanism includes a second axial limiting slot and a second axial limiting buckle, the second axial limiting slot is formed on the motor shaft, and the second axial limiting buckle is provided on the shaft linkage for relative axial limiting of the second axial limiting slot.

[0019] Preferably, one end of the first power connector and one end of the second power connector are respectively connected to the positive and negative poles of the power-consuming component through wires; the other end of the first power connector and the other end of the second power connector are respectively connected to the positive and negative poles of the power supply component through wires.

[0020] Preferably, the side of the machine shaft linkage has a first assembly opening and the top has a second assembly opening; the motor is a sonic motor, and the motor shaft is a hollow conductive machine shaft; the position of the hollow conductive machine shaft corresponds to the first assembly opening and is provided with a first power terminal, and the position of the hollow conductive machine shaft corresponds to the second assembly opening and is provided with a second power terminal, and the first power terminal and the second power terminal are relatively insulated; the first power terminal is assembled at the first assembly opening and is in contact with the first power terminal for electrical conduction, and the first power terminal is connected to the power supply element through a first wire; the second power terminal is assembled at the second assembly opening and is in contact with the second power terminal for electrical conduction, and the second power terminal is connected to the power supply element through a second wire passing through the hollow inner cavity of the hollow conductive machine shaft.

[0021] Preferably, it further includes a conductive component, which includes an electrode and an insulating mounting seat, and the electrode is defined as the second power connection end; the electrode is installed on the second assembly port through the insulating mounting seat, one end of the second wire is connected to the electrode, and the other end passes through the hollow conductive machine shaft and is connected to the power supply element.

[0022] Preferably, the second electrical connection member is a conductive probe, which is inserted into the second assembly port and contacts the electrode for electrical conduction.

[0023] Preferably, the first power connection member is a conductive spring sheet, and the bottom of the conductive spring sheet has an elastic deformation portion; a guide groove is provided on the shaft linkage member along the plug-in direction, the first assembly port is located in the guide groove, and the first power connection end is defined as the outer surface of the motor shaft corresponding to the position at the first assembly port; the conductive spring sheet compresses the elastic deformation portion and is inserted into the first assembly port along the guide groove, and the elastic deformation portion extends into the first assembly port and contacts the first power connection end for electrical conduction.

[0024] Preferably, the electrical component includes a lamp board and a plurality of lamp beads, and the plurality of lamp beads are installed on the lamp board; the lamp beads are implemented as a combination of one or more of the following: blue light whitening lamp beads, red light therapy lamp beads or purple light sterilization lamp beads.

[0025] Preferably, the bristle assembly includes a bristle holder and a plurality of bristle clusters planted on the bristle holder, the bristle clusters are implemented as clusters of transparent light-conducting brush filaments, and the positions of the bristle clusters correspond to the lamp beads.

[0026] Preferably, the electrical component is implemented as a sensor and / or a photographic element.

[0027] The beneficial effects of the above technical solutions can come from one or a combination of the following:

[0028] A first power connection member and a second power connection member are provided on the machine shaft linkage member. Structurally, the machine shaft linkage member is installed and connected to the brush head body, and in terms of circuit, the two power connections member are conductively connected to the positive and negative poles of the electrical components in the brush head body; thereby achieving stable assembly in structure and convenient conduction in the circuit; the two power connections member are stably connected to the positive and negative poles of the electrical components through the machine shaft linkage member on the one hand, and are conveniently conductively connected to the positive and negative poles of the power supply component on the other hand; the overall structure uses the machine shaft linkage member as a carrier, does not require additional structural design, does not destroy the component position layout of the electric toothbrush, and does not reduce the original space occupancy rate of the brush head and the motor output shaft.

[0029] The present application implements the motor shaft of the sonic wave motor as a hollow conductive structure, the interior of which serves as a wiring channel, and passes the conductive component from the motor shaft along the axis through the motor shaft to form a first conductive circuit. The motor shaft itself uses its conductive properties as a second conductive circuit; the two ends are respectively connected to the power-consuming element and the power-supply element to form a passage; the structural characteristics of the sonic wave motor itself are fully utilized, and it is only necessary to set the motor shaft hollow without the need for major structural modifications to the sonic wave motor; and both power terminals can be integrated into the motor shaft itself. Although the motor vibrates reciprocatingly at high frequency, it does not affect the power connection efficiency, and no additional wiring layout is required. The two power terminals are stably contacted internally through the machine shaft linkage and assembled externally, which has incomparable advantages in safety and convenience.

[0030] While completing the external output linkage through the machine shaft linkage, it can also rely on the structure of the machine shaft linkage. When the machine shaft linkage is installed on the brush head body, it can be assembled with the assembly port on the machine shaft linkage at the same time, thereby realizing the power connection of the two power connection parts.

[0031] The hollow conductive shaft can be used for all internal wiring, or one line can be led out with a wire for external connection. It has strong adaptability and wide application. It is particularly suitable for conductive structures where the power supply components are on one side of the sonic motor and the electrical components are on the other side. It has strong integration and high space utilization, reduces the difficulty of wiring, and improves durability.

[0032] The two power terminals are assembled and connected respectively through two power connection parts, which makes assembly very convenient and the circuits are clear. The circuits of the power supply components are integrated in the sonic motor and the machine shaft linkage, and the circuits of the power components are integrated in the brush head body. The two only need to be assembled and installed to achieve contact; and the machine shaft linkage further stabilizes the contact structure of the two, which greatly improves the reliability compared to the pure wire connection on the market.

[0033] The brush handle of an electric toothbrush is plugged into a shaft linkage, allowing the sonic motor to electromagnetically drive the hollow conductive shaft. This, in turn, drives the brush handle through the shaft linkage to rotate back and forth at a high frequency, ultimately driving the brush body to oscillate at a high frequency. The two electrical connections are implemented as a conductive probe and a conductive spring. The conductive probe plugs into the first electrode, while the conductive spring is assembled to the shaft linkage via a guide slot. The structural stability of the shaft linkage ensures electrical contact, resulting in high assembly and stability.

[0034] The electrical components are implemented as light boards and lamp beads with lighting effect functions, which can be connected to the power supply through the control motherboard. When the electric toothbrush is started, the light boards and lamp beads can be controlled by the control motherboard to operate and can be used in accordance with the user's usage needs.

[0035] The lamp beads can be implemented as a variety of therapeutic equivalents, such as red light therapy, blue light whitening or purple light sterilization, etc., combined with the brush head to achieve comprehensive gum protection and tooth cleaning effects.

[0036] Electrical components can also be implemented as sensors or photographic elements, which can be used to intuitively understand the environment and conditions inside the oral cavity, and even intuitively understand conditions such as gum inflammation and tooth decay. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] FIG1 shows a schematic diagram of the assembly of the electric toothbrush head of the present invention.

[0038] FIG2 shows a structural breakdown diagram of the brush head body and the motor in the electric toothbrush head of the present invention.

[0039] FIG3 shows a disassembled diagram of the electric toothbrush head of the present invention.

[0040] FIG4 shows an assembly and disassembly diagram of the brush head handle, the motor shaft and the motor shaft linkage in the present invention.

[0041] FIG5 shows a diagram showing the conductive circuit of the motor shaft in the present invention.

[0042] FIG6 shows a diagram showing the conductive circuits of the first power connector and the second power connector in the present invention.

[0043] FIG7 shows a front view of the electric toothbrush of the present invention.

[0044] FIG8 shows a cross-sectional view taken along line AA in FIG7 .

[0045] FIG9 shows an enlarged view of point B in FIG8 .

[0046] in: DETAILED DESCRIPTION

[0047] The preferred embodiments described below are for illustrative purposes only, and those skilled in the art may readily conceive of other obvious variations. The basic principles of the present invention defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0048] Unless the context clearly requires otherwise, throughout the specification and claims, words such as "include," "comprising," and similar expressions should be interpreted as inclusive rather than exclusive or exhaustive; that is, as meaning "including but not limited to." The word "and / or" is used to simplify expressions. For example, "A and / or B" includes both "A and B" and "A or B," where "A or B" is interpreted as either "A" or "B"; and "A and B" is interpreted as both "A" and "B" being selected.

[0049] The sonic motor or sonic motor of an electric toothbrush is a motor that, when powered alternately in forward and reverse directions at a certain frequency, causes the motor output shaft to swing back and forth at this frequency, thereby truly achieving the "brushing teeth" action. This vibration principle is based on the attraction and repulsion of the stator and rotor inside the motor. There is no mechanical friction inside the motor, and it has strong stability, high output power, and can generate high-frequency vibrations, achieving a similar "sound wave" effect. Therefore, it is accepted and widely used by people in this field. The above is necessary for understanding the premise of this application.

[0050] Referring to Figures 1 to 6 , this embodiment provides an electric toothbrush head, comprising a brush head body 1, an electrical component 5, and a shaft linkage 2. The electrical component 5 is disposed within the brush head body 1; the shaft linkage 2 is disposed within the brush head body 1 and is linked to the motor shaft 41 of the motor 4 within the electric toothbrush. The shaft linkage 2 is provided with a first electrical connector 61 and a second electrical connector 62. One end of the first electrical connector 61 is conductively connected to the electrical component 5, and the other end is conductively connected to the power supply element of the electric toothbrush. The second electrical connector 62 has one end conductively connected to the electrical component 5, and the other end is conductively connected to the power supply element of the electric toothbrush. In this embodiment, a first power connection member 61 and a second power connection member 62 are provided on the machine shaft linkage member 2. Structurally, the machine shaft linkage member 2 is installed and connected to the brush head body 1, and in terms of the circuit, the two power connections are conductively connected to the positive and negative poles of the electrical component 5 in the brush head body 1; thereby, stable assembly in structure and convenient conduction in the circuit are achieved; the two power connections are stably connected to the positive and negative poles of the electrical component 5 through the machine shaft linkage member 2 on the one hand, and are conveniently conductively connected to the positive and negative poles of the power supply component on the other hand; the overall structure uses the machine shaft linkage member 2 as a carrier, does not require additional structural design, does not destroy the position layout of the components of the electric toothbrush, and does not reduce the original space occupancy rate of the brush head and the motor shaft 41.

[0051] The above is necessary for implementing the basis of this embodiment, and is further described in detail below with reference to the accompanying drawings:

[0052] In this embodiment, the sonic motor 4 includes a housing, a stator, a rotor, and bearing parts in the openings at both ends of the housing. This is the principle structure of the sonic motor 4 and the sonic motor. In this embodiment, the motor shaft 41 of the motor 4 is only hollowed out to form a wiring channel, and the conductive properties of the motor shaft 41 are used for circuit design. This embodiment does not make technical improvements to the principle structure, so the principle structure will not be described in detail.

[0053] Referring to Figure 4 in conjunction with Figures 1 and 2 , the brush head body 1, serving as the brushing component of the electric toothbrush, is driven by the electric toothbrush's sonic motor 4 via the shaft linkage 2, causing it to oscillate at a high frequency with a certain amplitude. Structurally, the brush head body 1 comprises a bristle assembly 11 and a brush handle 12. The bristle assembly 11 is mounted on the brush handle 12, with the electrical component 5 positioned relative to the bristle assembly 11. The brush handle 12 also has a first insertion cavity 120 for the shaft linkage 2 to connect to, and a second insertion cavity 20 for the motor shaft 41 to connect to.

[0054] In terms of structural assembly, the machine shaft linkage part 2 is inserted into the first plug-in cavity 120 to achieve linkage assembly with the brush head handle 12. Specifically, the two are relatively fixed in the circumferential direction to achieve synchronous reciprocating rotation; the two are relatively fixed in the axial direction to achieve assembly and installation.

[0055] To this end, the machine shaft linkage part 2 forms a relative circumferential limit with the brush head handle 12 through the first circumferential limit mechanism, and the machine shaft linkage part 2 forms a relative axial limit with the brush head handle 12 through the first axial limit mechanism.

[0056] Specifically, referring to Figure 4 , the first circumferential limiting mechanism includes a first circumferential limiting rib 121 and a first circumferential limiting groove 23. The first circumferential limiting rib 121 and the first circumferential limiting groove 23 are respectively provided on the inner wall of the first plug-in cavity 120 and the outer wall of the crankshaft linkage 2. The first circumferential limiting rib 121 and the first circumferential limiting groove 23 are selectively provided on the inner wall of the first plug-in cavity 120, while the other is provided on the corresponding outer wall of the crankshaft linkage 2. In this embodiment, the first circumferential limiting rib 121 and the first axial limiting groove 122 are arranged along the plug-in direction, which not only achieves relative axial limiting but also serves as a plug-in guide.

[0057] Further, please refer to Figure 4, the first axial limiting mechanism includes a first axial limiting rib 25 and a first axial limiting groove 122. The first axial limiting rib 25 and the first axial limiting groove 122 are respectively arranged on the outer wall of the crankshaft linkage 2 and the inner wall of the first plug-in cavity 120. Similarly, the first axial limiting rib 25 and the first axial limiting groove 122 are selectively arranged on the inner wall of the first plug-in cavity 120, and the other is arranged on the outer wall of the crankshaft linkage 2 at a corresponding position. Specifically, the first axial limiting groove 122 is a first annular groove, which is arranged on the inner wall of the first plug-in cavity 120 near the opening, and the first axial limiting rib 25 is a first annular rib, which is arranged on the outer wall of the crankshaft linkage 2 and can be interference fit into the first annular groove. Therefore, after the crankshaft linkage 2 is inserted into the first plug-in cavity 120, the first annular rib is interference fit into the first annular groove to achieve assembly and fixation in the plug-in direction. Preferably, the first annular rib may be of one-segment or multi-segment type.

[0058] In the above, the machine shaft linkage member 2 realizes the stable assembly of the brush head handle 12 and the machine shaft linkage member 2 through the composite limitation in the axial direction and the circumferential direction, thereby realizing the synchronous movement without delay and looseness.

[0059] Similarly, in terms of structural assembly, the motor shaft 41 is inserted into the second plug-in cavity 20 of the machine shaft linkage 2 to achieve linkage assembly with the machine shaft linkage 2. Specifically, the two are relatively fixed in the circumferential direction to achieve synchronous reciprocating rotation; the two are relatively fixed in the axial direction to achieve assembly and installation.

[0060] To this end, the motor shaft 41 is inserted into the second insertion cavity 20, and the motor shaft 41 forms a relative circumferential limit with the crankshaft linkage 2 through the second circumferential limit mechanism, and forms a relative axial limit with the crankshaft linkage 2 through the second axial limit mechanism.

[0061] Specifically, referring to FIG5 , the second circumferential limiting mechanism includes a second circumferential limiting step surface 410 and a second circumferential limiting rib. The second circumferential limiting step surface 410 is formed on the motor shaft 41, and the second circumferential limiting rib is located on the inner wall of the second plug-in cavity 20. The second circumferential limiting rib presses against the second circumferential limiting step surface 410 to limit relative circumferential rotation. Furthermore, the second circumferential limiting step surface 410 is formed on the motor shaft 41 along the plug-in direction, and the second circumferential limiting rib is formed on the inner wall of the second plug-in cavity 20 along the plug-in direction, and the two are pressed down and fit together to achieve synchronous action in the circumferential direction. It should be noted that although the second circumferential limiting rib is not shown in the figure, it should be clear to those skilled in the art that its position and structure can be known based on the above text. It can be integrally formed with the crankshaft linkage 2 and located on the back of the guide groove 210 (the guide groove 210 will be described in detail later in conjunction with the first assembly port 21) on the crankshaft linkage 2.

[0062] Further, referring to Figure 4 , the second axial limiting mechanism includes a second axial limiting slot 412 and a second axial limiting buckle 24. The second axial limiting slot 412 is formed on the motor shaft 41, and the second axial limiting buckle 24 is provided on the crankshaft linkage 2 to limit the axial position relative to the second axial limiting slot 412. Preferably, the second axial limiting buckle 24 is a spring buckle. When the motor shaft 41 is inserted into the second insertion cavity 20, the spring buckle engages with the second axial limiting slot 412 to achieve axial limiting, thereby achieving assembly and installation.

[0063] In the above description, the crankshaft linkage member 2 is stably assembled with the motor shaft 41 through the combined limitation in the axial and circumferential directions, thereby achieving synchronization of movements without delay or looseness.

[0064] The shaft linkage 2 also serves as a structural carrier of the conductive circuit design, and cooperates with the motor shaft 41 , the first power connection 61 and the second power connection 62 to complete the power supply from the power supply component to the power-consuming component 5 .

[0065] As one implementation of this embodiment, one end of the first power connector 61 and one end of the second power connector 62 are connected to the positive and negative electrodes of the power-consuming component 5, respectively, via wires. The other ends of the first power connector 61 and the other ends of the second power connector 62 are connected to the positive and negative electrodes of the power supply component, respectively, via wires. Specifically, a wiring trough can be provided on the outer wall of the crankshaft linkage 2 to route the wires of the first and second power connectors 61, 62 out. This does not affect the structure and spatial occupancy of the crankshaft linkage 2, nor does it affect the overall structure.

[0066] As a preferred embodiment of this embodiment, see Figure 5 . The shaft linkage 2 has a first assembly opening 21 on its side and a second assembly opening 22 on its top. The motor 4 is a sonic motor, and the motor shaft 41 is a hollow, conductive shaft. A first power connection is provided on the hollow, conductive shaft, corresponding to the first assembly opening 21. In this embodiment, the first power connection is implemented as the outer surface of the motor shaft 41, corresponding to the first assembly opening 21.

[0067] Please refer to Figures 3 and 5. The hollow conductive shaft 41 is provided with a second power terminal (later implemented as an electrode 31) at the position corresponding to the second assembly opening 22. The first power terminal and the second power terminal are relatively insulated. The first power terminal 61 is assembled in the first assembly opening 21 and contacts the first power terminal for electrical conduction. The first power terminal is connected to the power supply element via a first wire 610. The second power terminal 62 is assembled in the second assembly opening 22 and contacts the second power terminal for electrical conduction. The second power terminal is connected to the power supply element via a second wire 33 that passes through the hollow inner cavity of the hollow conductive shaft. This method only opens assembly openings on the top and sides of the shaft linkage 2 to facilitate the assembly of the first power terminal 61 and the second power terminal 62. The wiring is completed through the internal cavity of the motor shaft 41.

[0068] Referring to Figure 5 , this embodiment also includes a conductive assembly comprising an electrode 31 and an insulating mounting base 32 . Electrode 31 is defined as the aforementioned second power connection terminal. Electrode 31 is mounted to second assembly opening 22 via insulating mounting base 32 . A second wire 33 is connected to electrode 31 at one end and passes through a hollow conductive motor shaft 41 at the other end to connect to the power supply element. The first power connection terminal is implemented as the outer wall of motor shaft 41. The first and second power connections are insulated by insulating mounting base 32 to prevent short circuits.

[0069] The first electrical connector 61 and the second electrical connector 62 are designed to facilitate the formation of a conductive connection with the first and second electrical terminals. In a preferred embodiment of this embodiment, the second electrical connector 62 is a conductive probe, which is inserted into the second assembly opening 22 and contacts the electrode 31 for electrical conduction. Furthermore, as shown in Figure 6, the first electrical connector 61 is a conductive spring, and the bottom of the conductive spring has an elastic deformation portion 611; a guide groove 210 is provided on the shaft linkage 2 along the insertion direction, and the first assembly opening 21 is located within the guide groove 210. The conductive spring compresses the elastic deformation portion 611 along the guide groove 210 and is inserted into the first assembly opening 21. The elastic deformation portion 611 extends into the first assembly opening 21 and contacts the first electrical terminal for electrical conduction. Preferably, the conductive spring is implemented as a deformable spring, and the deformable portion corresponds to the elastic deformation portion 611; the first electrical terminal is implemented as a partial area of ​​the second circumferential limiting step surface 410, which is able to fully contact the deformable portion of the spring with a planar structure. Furthermore, as shown in FIG5 , a shaft connection hole 411 is provided on the motor shaft 41 to assist in the connection of the first wire 610 . One end of the first wire 610 is connected to the shaft connection hole 411 . The metal material of the motor shaft 41 enables the first wire 610 to be conductively connected to the first power terminal.

[0070] Please refer to Figure 6. The electrical component 5 is provided on the brush head body 1 to enrich the functionality of the electric toothbrush. Specifically, the electrical component 5 includes a lamp board 52 and a plurality of lamp beads 51, and the plurality of lamp beads 51 are installed on the lamp board 52. The lamp beads 51 are implemented as a combination of one or more of the following: blue light whitening lamp beads, red light therapy lamp beads or purple light sterilization lamp beads. Suitable, as shown in Figure 3, the bristle assembly 11 includes a bristle holder 111 and a plurality of bristle clusters 112 planted on the bristle holder 111. The bristle clusters 112 are implemented as clusters of transparent light-guiding brush filaments. The position of the bristle clusters 112 corresponds to the lamp beads 51, which is convenient for guiding the light of the lamp beads 51 and is more conducive to the auxiliary effect on the oral cavity.

[0071] Alternatively, the electrical component 5 is implemented as a sensor and / or a photographic element to facilitate observation and measurement of the oral environment. The power supply element in this embodiment can be implemented as a control motherboard 7 or a battery 8.

[0072] Please refer to Figures 1 to 6, and in conjunction with Figures 7 to 9, the assembly method of the brush head in this embodiment is:

[0073] First, connect the conductive spring and the conductive probe to the positive and negative poles of the lamp board 52 through the wires; then, install the electrode 31 in the second assembly port 22 through the insulating mounting seat 32, insert the conductive spring along the guide groove 210 into the first assembly port 21, and insert the conductive probe into the second assembly port 22 to contact the electrode 31; then, connect one end of the first wire 610 to the shaft connection hole 411 of the motor shaft 41 for standby use, connect one end of the second wire 33 to the electrode 31 and extend it out of the second plug-in cavity 20 for standby use; finally, connect the shaft linkage 2 through After the main body of the electric toothbrush is assembled, the second wire 33 is routed and extended from the hollow inner cavity of the motor shaft 41. At this time, the second wire 33 is relatively insulated from the motor shaft 41. The motor shaft 41 is inserted into the second plug-in cavity 20 of the machine shaft linkage 2 through the second axial limiting mechanism and the second circumferential limiting mechanism. At this time, the other end of the first wire 610 and the second wire 33 is connected to the control main board 7, and a passage can be formed by powering the battery 8.

[0074] It should be noted that, when implementing the above description, those skilled in the art do not need to rigidly reproduce each detail described, but can achieve rapid assembly according to the description of the above overall technical solution.

[0075] The beneficial effects of the above technical solutions can come from one or a combination of the following:

[0076] A first power connection member 61 and a second power connection member 62 are provided on the machine shaft linkage member 2. Structurally, the machine shaft linkage member 2 is installed and connected to the brush head body 1, and in terms of the circuit, the two power connections are conductively connected to the positive and negative poles of the electrical component 5 in the brush head body 1; thereby achieving stable assembly in the structure and convenient conduction in the circuit; the two power connections are stably connected to the positive and negative poles of the electrical component 5 through the machine shaft linkage member 2 on the one hand, and are conveniently conductively connected to the positive and negative poles of the power supply component on the other hand; the overall structure uses the machine shaft linkage member 2 as a carrier, does not require additional structural design, does not destroy the position layout of the components of the electric toothbrush, and does not reduce the original space occupancy rate of the brush head and the output shaft of the motor 4.

[0077] The present application implements the motor shaft 41 of the sonic motor 4 as a hollow conductive structure, the interior of which serves as a wiring channel, and passes the conductive component from the motor shaft 41 along the axis through the motor shaft 41 to form a first conductive circuit. The motor shaft 41 itself uses its conductive properties to serve as a second conductive circuit; the two ends are respectively connected to the power-consuming element 5 and the power supply element to form a passage; the structural characteristics of the sonic motor 4 itself are fully utilized, and it is only necessary to set the motor shaft 41 hollow, without the need for major structural modifications to the sonic motor 4; and both power terminals can be integrated into the motor shaft 41 itself. Although the motor 4 vibrates reciprocatingly at high frequency, it does not affect the power connection efficiency, and no additional wiring layout is required. The two power terminals are stably contacted internally through the machine shaft linkage 2 and assembled externally, which has incomparable advantages in safety and convenience.

[0078] While completing the external output linkage through the machine shaft linkage 2, the structure of the machine shaft linkage 2 can also be attached. When the machine shaft linkage 2 is installed on the brush head body 1, it can be assembled with the assembly port on the machine shaft linkage 2 at the same time, thereby realizing the power connection of the two power connection parts.

[0079] The hollow conductive shaft 41 can be fully internally routed, or a line can be led out with a wire for external connection. It has strong adaptability and wide application. It is particularly suitable for the conductive structure in which the power supply element is on one side of the sonic motor 4 and the electrical element 5 is on the other side. It has strong integration and high space utilization, reduces the difficulty of wiring, and improves durability.

[0080] The two power terminals are assembled and connected respectively through two power connection parts, which makes assembly very convenient and the circuits are clear. The circuits of the power supply components are integrated on the sonic motor 4 and the machine shaft linkage 2, and the circuits of the electrical components 5 are integrated in the brush head body 1. The two only need to be assembled and installed to achieve contact; and the machine shaft linkage 2 further stabilizes the contact structure of the two, which greatly improves the reliability compared to the pure wire connection on the market.

[0081] The brush handle 12 of the electric toothbrush is plugged into the shaft linkage 2, allowing the sonic motor 4 to electromagnetically drive the hollow conductive shaft 41. This, in turn, drives the brush handle 12 through the shaft linkage 2 for high-frequency reciprocating rotation, ultimately driving the brush body 1 to achieve high-frequency oscillation. The two electrical connections are implemented as a conductive probe and a conductive spring. The conductive probe plugs into the first electrode 31, while the conductive spring is assembled to the shaft linkage 2 via a guide slot 210. The structural stability of the shaft linkage 2 ensures electrical contact, resulting in high assembly and stability.

[0082] The electrical components 5 are implemented as lamp boards and lamp beads with lighting effect functions, which can be connected to the power supply through the control motherboard 7. When the electric toothbrush is started, the lamp boards and lamp beads can be controlled by the control motherboard 7 to operate and can be used in accordance with the user's usage needs.

[0083] The lamp beads can be implemented as a variety of therapeutic equivalents, such as red light therapy, blue light whitening or purple light sterilization, etc., combined with the brush head to achieve comprehensive gum protection and tooth cleaning effects.

[0084] The electrical element 5 can also be implemented as a sensor or a photographic element, through which the environment and conditions inside the oral cavity can be intuitively understood, and even conditions such as gum inflammation and tooth decay can be intuitively understood.

[0085] The above specific embodiments do not constitute a limitation on the scope of protection of this disclosure. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this disclosure shall be included within the scope of protection of this disclosure.

[0086] Those skilled in the art will appreciate that the embodiments of the present invention described above are intended to be illustrative only and are not intended to limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and illustrated in the embodiments. Any variations or modifications may be made to the embodiments of the present invention without departing from the principles described.

Claims

1. An electric toothbrush head, characterized in that: include: Brush head body; An electrical component, the electrical component is arranged in the brush head body; A machine shaft linkage part, the machine shaft linkage part is arranged in the brush head body and is linked to the motor shaft of the motor in the electric toothbrush; the machine shaft linkage part is provided with a first power connection part and a second power connection part, one end of the first power connection part is conductively connected to the power-consuming element, and the other end is conductively connected to the power supply element of the electric toothbrush; one end of the second power connection part is conductively connected to the power-consuming element, and the other end is conductively connected to the power supply element of the electric toothbrush.

2. The electric toothbrush head according to claim 1, characterized in that: The brush head body includes a bristle assembly and a brush head handle, the bristle assembly is assembled on the brush head handle, and the position of the electrical component corresponds to the bristle assembly; the brush head handle also has a first plug-in cavity for the machine shaft linkage to be plugged in and linked; the machine shaft linkage has a second plug-in cavity for the motor shaft to be plugged in and linked.

3. The electric toothbrush head according to claim 2, characterized in that: The machine shaft linkage part forms a relative circumferential limit with the brush head handle through a first circumferential limit mechanism, and the machine shaft linkage part forms a relative axial limit with the brush head handle through a first axial limit mechanism.

4. The electric toothbrush head according to claim 3, characterized in that: The first circumferential limiting mechanism comprises a first circumferential limiting rib and a first circumferential limiting groove; the first circumferential limiting rib and the first circumferential limiting groove are respectively arranged on the inner wall of the first plug-in cavity and the outer wall of the shaft linkage component.

5. The electric toothbrush head according to claim 3, characterized in that: The first axial limiting mechanism comprises a first axial limiting rib and a first axial limiting groove; the first axial limiting rib and the first axial limiting groove are respectively arranged on the outer wall of the machine shaft linkage and the inner wall of the first plug-in cavity.

6. The electric toothbrush head according to claim 5, characterized in that: The first axial limit groove is a first annular groove, which is arranged on the inner wall of the first plug-in cavity near the opening; the first axial limit rib is a first annular rib, which is arranged on the outer wall of the machine shaft linkage and can be interference fit into the first annular groove.

7. The electric toothbrush head according to claim 2, characterized in that: The motor shaft is inserted into the second insertion cavity, and the motor shaft forms a relative circumferential limit with the machine shaft linkage through a second circumferential limit mechanism, and the motor shaft forms a relative axial limit with the machine shaft linkage through a second axial limit mechanism.

8. The electric toothbrush head according to claim 7, characterized in that: The second circumferential limiting mechanism includes a second circumferential limiting step surface and a second circumferential limiting rib; the second circumferential limiting step surface is formed on the motor shaft, the second circumferential limiting rib is arranged on the inner wall of the second plug-in cavity, and the second circumferential limiting rib is pressed against the second circumferential limiting step surface to limit relative circumferential rotation.

9. The electric toothbrush head according to claim 7, characterized in that: The second axial limiting mechanism includes a second axial limiting slot and a second axial limiting buckle, the second axial limiting slot is formed on the motor shaft, and the second axial limiting buckle is arranged on the shaft linkage member to limit the relative axial position with the second axial limiting slot.

10. The electric toothbrush head according to claim 1 or 2, characterized in that: One end of the first power connector and one end of the second power connector are respectively connected to the positive and negative electrodes of the power-consuming element through wires; the other end of the first power connector and the other end of the second power connector are respectively connected to the positive and negative electrodes of the power supply element through wires.

11. The electric toothbrush head according to claim 2, characterized in that: The side of the machine shaft linkage has a first assembly opening, and the top has a second assembly opening; the motor is a sonic motor, and the motor shaft is a hollow conductive machine shaft; a first power connection terminal is provided at a position of the hollow conductive machine shaft corresponding to the first assembly opening, and a second power connection terminal is provided at a position of the hollow conductive machine shaft corresponding to the second assembly opening, and the first power connection terminal and the second power connection terminal are relatively insulated; the first power connection member is assembled at the first assembly opening and contacts the first power connection terminal for electrical conduction, and the first power connection terminal is connected to the power supply element through a first wire; the second power connection member is assembled at the second assembly opening and contacts the second power connection terminal for electrical conduction, and the second power connection terminal is connected to the power supply element through a second wire passing through the hollow inner cavity of the hollow conductive machine shaft.

12. The electric toothbrush head according to claim 11, characterized in that: It also includes a conductive component, which includes an electrode and an insulating mounting seat. The electrode is defined as the second power connection end; the electrode is installed on the second assembly port through the insulating mounting seat, one end of the second wire is connected to the electrode, and the other end passes through the hollow conductive shaft to be connected to the power supply element.

13. The electric toothbrush head according to claim 12, characterized in that: The second electrical connection member is a conductive probe, which is inserted into the second assembly port and contacts the electrode for electrical conduction.

14. The electric toothbrush head according to claim 11, characterized in that: The first power connection member is a conductive spring sheet, and the bottom of the conductive spring sheet has an elastic deformation portion; a guide groove is provided on the shaft linkage member along the plug-in direction, the first assembly port is located in the guide groove, and the first power connection end is defined as the outer surface of the motor shaft corresponding to the position at the first assembly port; the conductive spring sheet compresses the elastic deformation portion and is inserted into the first assembly port along the guide groove, and the elastic deformation portion extends into the first assembly port and contacts the first power connection end for electrical conduction.

15. The electric toothbrush head according to claim 2, characterized in that: The electrical components include a lamp board and a plurality of lamp beads, and the plurality of lamp beads are installed on the lamp board; the lamp beads are implemented as a combination of one or more of the following: blue light whitening lamp beads, red light therapy lamp beads or purple light sterilization lamp beads.

16. The electric toothbrush head according to claim 15, characterized in that: The bristle assembly includes a bristle holder and a plurality of bristle clusters planted on the bristle holder. The bristle clusters are formed by clustering transparent light-conducting brush filaments, and the positions of the bristle clusters correspond to the lamp beads.

17. The electric toothbrush according to claim 2, characterized in that: The electrical consumer is implemented as a sensor and / or a camera element.

Images