Electric toothbrush

Abstract

This utility model relates to an electric toothbrush, belonging to the field of oral care. An electric toothbrush includes: a housing assembly; a first drive assembly disposed on the housing assembly; a first transmission assembly connected to the first drive assembly, capable of moving in a first mode under the drive of the first drive assembly; a second transmission assembly drively connected to the first transmission assembly, capable of moving in a second mode under the drive of the first transmission assembly; and a second drive assembly disposed on the second transmission assembly, with a brush head disposed on the second drive assembly. The first transmission assembly moves in the first mode under the drive of the first drive assembly, and the second transmission assembly moves in the second mode under the drive of the first transmission assembly. The two different movement modes cooperate to achieve diverse cleaning effects.

Description

Technical Field

[0001] This utility model relates to the field of oral care, and in particular to an electric toothbrush. Background Technology

[0002] With oral health care receiving increasing attention, electric toothbrushes, thanks to their efficient cleaning capabilities, have gradually become the preferred tool for many consumers' daily oral hygiene. They use a built-in motor to drive the brush head, replacing traditional manual brushing and effectively improving cleaning efficiency. However, a significant problem with current electric toothbrushes on the market is that the brush head's movement is relatively fixed, failing to meet the needs of brushing from various angles.

[0003] Most electric toothbrushes typically limit their brush head movement modes to a few basic types: rotary and sonic. Rotary electric toothbrushes rely on the circular rotation of the brush head for cleaning, while sonic toothbrushes use high-frequency vibrations to drive water flow onto the tooth surface. While both are effective for cleaning the outer surfaces of teeth, they fall short when cleaning complex areas of the mouth. When cleaning the inner surfaces of molars, the gum line, or hard-to-reach wisdom teeth, the relatively limited brush head movement trajectory and angle make it difficult to adjust to these specific areas, resulting in plaque and food debris not being thoroughly removed. Utility Model Content

[0004] Therefore, it is necessary to provide an electric toothbrush to address the limitation of brush head movement modes.

[0005] An electric toothbrush includes: a housing assembly; a first drive assembly disposed on the housing assembly; a first transmission assembly disposed on the housing assembly and connected to the first drive assembly, the first transmission assembly being capable of moving in a first mode under the drive of the first drive assembly; a second transmission assembly being drively connected to the first transmission assembly, the second transmission assembly being capable of moving in a second mode under the drive of the first transmission assembly; a second drive assembly disposed on the second transmission assembly; and a brush head disposed on the second drive assembly.

[0006] The electric toothbrush disclosed in this application has a first transmission component that moves in a first mode under the drive of a first drive component, and a second transmission component that moves in a second mode under the drive of the first transmission component. These two different movement modes cooperate to achieve diverse cleaning effects. The power generated by the first drive component is efficiently and stably transmitted to the second transmission component, ensuring that the second transmission component maintains a stable movement state. During cleaning, stable power transmission ensures that the cleaning force of the brush head remains consistent, preventing a decrease in cleaning effect due to power attenuation. The second drive component, mounted on the second transmission component, drives the toothbrush to move. The first drive component focuses on providing power, the first transmission component is responsible for power conversion and initial transmission, and the second transmission component completes the final movement mode realization. Multiple movement modes are output through the cooperation of the first and second transmission components. The connections and layout between the components are optimized, reducing malfunctions caused by unreasonable structures. The housing component provides a stable mounting base for other components, ensuring that the components will not loosen or shift due to vibration or other reasons during operation. The brush head is mounted on the second drive component, and the brush head performs cleaning movements simultaneously under the action of the second drive component while moving in both the first and second modes.

[0007] In one embodiment, the first drive assembly can drive the first transmission assembly to reciprocate along the axial direction of the housing assembly. By driving the first transmission assembly to reciprocate axially, the electric toothbrush head generates a high-frequency and regular back-and-forth motion, which effectively removes plaque from the tooth surface. During brushing, the reciprocating motion of the brush head can penetrate deep into the interdental spaces and fissures, thoroughly removing plaque and food debris attached to the tooth surface through mechanical friction. Compared to other motion methods, the axial reciprocating motion is relatively gentle, effectively reducing irritation to the gums while ensuring cleaning effectiveness. Users with sensitive gums often worry about the vigorous movement of the bristles causing bleeding or discomfort when using an electric toothbrush; the gentle nature of the axial reciprocating motion makes brushing more comfortable.

[0008] In one embodiment, the first transmission component can drive the second transmission component to reciprocate along the axis of the housing component and rotate in both forward and reverse directions around the axis of the housing component. Driven by the first transmission component, the second transmission component can both reciprocate axially and rotate in both forward and reverse directions. This composite motion mode allows the brush head to perform multi-dimensional cleaning actions. Axial reciprocating motion can deeply clean the interdental spaces and fissures, removing laterally attached plaque and food debris; forward and reverse rotation can perform circumferential cleaning of the tooth surface, effectively removing vertical stains. The two motion modes work together to comprehensively cover all surfaces of the teeth, including the labial, lingual, and occlusal surfaces, achieving thorough cleaning. Compared to electric toothbrushes with a single motion mode, the cleaning effect is significantly improved, better maintaining oral health.

[0009] In one embodiment, the first drive assembly, the first transmission assembly, the second transmission assembly, and the second drive assembly are arranged sequentially along the axial direction. This sequential arrangement of the first drive assembly, the first transmission assembly, the second transmission assembly, and the second drive assembly along the axial direction creates a stable axial support structure within the housing assembly. This layout allows for tighter connections between components, effectively dispersing vibrations and stresses generated by component movement during operation, preventing loosening or displacement of parts from affecting normal use. The sequential axial arrangement fully utilizes the internal space of the electric toothbrush housing assembly, resulting in a more compact product structure. Compared to a scattered or irregular component layout, this method avoids wasted space, reduces the overall size of the electric toothbrush, and makes it easier to hold and carry.

[0010] In one embodiment, the first transmission assembly includes a first driven block and a movable module. The first driven block is mounted on the first drive assembly, which drives the first driven block to rotate. The movable module is movably mounted on the housing assembly and can move axially. The movable module is adapted to the first driven block, and when the first driven block rotates, it drives the movable module to reciprocate axially. The second transmission assembly is drively connected to the movable module. By driving the first driven block to rotate through the first drive assembly, and by adapting to the movable module, the rotation is converted into the reciprocating motion of the movable module along the axial direction. This ingenious design efficiently realizes the motion mode required for cleaning with an electric toothbrush. When cleaning teeth, the axial reciprocating motion of the movable module drives the second transmission assembly, causing the brush head to move back and forth, reaching deep into the interdental spaces and fissures of teeth, effectively removing plaque and food debris. The adapted transmission between the first driven block and the movable module ensures the stability of power transmission. The first drive assembly continuously and stably outputs rotational power, which is precisely transmitted to the movable module by the first driven block, allowing the movable module to maintain a stable frequency and amplitude during axial reciprocating motion.

[0011] In one embodiment, a first movable groove is provided on one of the first driven block and the movable module, and a first protrusion is formed on the other of the first driven block and the movable module. The first protrusion and the first movable groove are adapted to each other, and the first protrusion can move within the first movable groove. Through the adaptation design of the first protrusion and the first movable groove, the rotation of the first driven block can be efficiently converted into the reciprocating motion of the movable module along the axial direction. When the first driven block rotates, the first protrusion moves within the first movable groove, and its movement trajectory guides the movable module to perform regular axial reciprocating motion, thereby driving the second transmission component and causing the electric toothbrush head to produce a stable reciprocating motion. This precise motion conversion ensures that when cleaning teeth, the brush head can act on the tooth surface at an appropriate frequency and amplitude, effectively removing plaque and food debris and improving the cleaning effect. For example, when cleaning between teeth, the stable reciprocating motion allows the bristles to penetrate into the gaps for deep cleaning. The tight fit between the first protrusion and the first movable groove reduces power loss during transmission. The cooperation between the two can maximize the transmission of power and avoid power loss due to excessive gaps or unreasonable structure. During continuous operation of the electric toothbrush, stable power transmission ensures that the brush head maintains consistent cleaning force, preventing any impact on cleaning effectiveness due to power attenuation. Even with prolonged use, it maintains highly efficient cleaning performance, extending the effective usage time after a single charge.

[0012] In one embodiment, the first driven block is provided with the first movable groove, which is disposed along the outer periphery of the first driven block. The movable module includes a movable body and the first protrusion. The movable body is provided with a first fitting cavity, and the first protrusion is disposed on the movable body and located on the inner wall of the first fitting cavity. The first fitting cavity is adapted to the first driven module, and the movable body is connected to the second transmission component. The first movable groove, disposed along the outer periphery of the first driven block, in conjunction with the first protrusion on the movable module, forms a highly efficient power conversion structure. When the first driven block rotates, the first protrusion moves along the outer periphery within the first movable groove, stably converting the circular motion into the axial reciprocating motion of the movable module. This design ensures minimal energy loss during power transmission, enabling the power of the first drive component to be transmitted to the second transmission component with high efficiency. This allows the electric toothbrush head to achieve stable and powerful back-and-forth reciprocating motion, effectively improving cleaning performance. Whether cleaning the tooth surface or reaching deep into the gaps between teeth, it can precisely and efficiently remove plaque and food debris. The outer periphery layout of the first movable groove and the placement of the first protrusion facilitate precise control of the motion parameters of the movable module. By adjusting the shape and length of the first movable groove, as well as the position and size of the first protrusion, the frequency, amplitude, and speed of the axial reciprocating motion of the movable module can be precisely adjusted.

[0013] In one embodiment, the first movable slot has a first position and a second position. The distance from the first position to the first driving component is less than the distance from the second position to the first driving component. During the rotation of the first driven block, the first protrusion is moved from the first position to the second position or from the second position to the first position. By cooperating with the first protrusion at the first and second positions of the first movable slot, the movable module can achieve a step-like change in the amplitude or frequency of its movement during the rotation of the first driven block. When the first protrusion moves from the first position to the second position and from the second position to the first position, the axial reciprocating motion of the movable module can simulate professional brushing techniques, providing users with a more scientific and comprehensive oral cleaning solution.

[0014] In one embodiment, the second transmission assembly includes a second driven block and a reverse thrust module. The second driven block is disposed on the first transmission assembly and is rotatable relative to the first transmission assembly. The first transmission assembly drives the second driven block to reciprocate axially. The reverse thrust module is adapted to the second driven block. When the second driven block reciprocates axially, it abuts against the reverse thrust module. When the reverse thrust module abuts against the reverse thrust module, the reverse thrust module drives the second driven block to rotate around its axis. By driving the second driven block to reciprocate axially through the first transmission assembly, and simultaneously adapting to the second driven block, the reverse thrust module interacts to drive the second driven block to rotate during the reciprocating motion, enabling the brush head to achieve a composite motion of axial reciprocating and rotation. This composite motion can clean teeth from multiple dimensions. The axial reciprocating motion can penetrate deep into the interdental spaces to remove longitudinal stains, while the rotation can perform circumferential polishing on the tooth surface, removing laterally attached plaque and food debris.

[0015] In one embodiment, one of the second driven block and the reverse thrust module is provided with a second movable groove, and the other of the second driven block and the reverse thrust module is provided with a second protrusion. The second protrusion and the second movable groove are adapted to each other, and the second protrusion can move within the second movable groove. This adaptation design of the second protrusion and the second movable groove ensures that the axial reciprocating motion of the second driven block can be stably converted into rotation. When the second driven block reciprocates axially, the second protrusion moves within the second movable groove, and its movement trajectory guides the second driven block to rotate, enabling the electric toothbrush head to achieve a compound motion. This precise motion conversion method reduces energy loss during power transmission, ensuring that the brush head receives stable and sufficient power. Whether cleaning the tooth surface or reaching deep into the gaps between teeth, it can clean with appropriate force and frequency, improving cleaning efficiency and effectiveness. By changing the shape and length of the second movable groove and the position and size of the second protrusion, the rotation angle, speed, and amplitude of the second driven block can be flexibly adjusted.

[0016] In one embodiment, the second driven block is provided with the second movable groove, which is distributed on the outer periphery of the second driven block. The reverse thrust module includes a reverse thrust fixing block and a second protrusion. The reverse thrust fixing block is disposed on the housing assembly and is provided with a second adapter groove. The second protrusion is disposed on the reverse thrust fixing block and located on the inner wall of the second adapter groove. The second adapter groove is adapted to the second driven block. The second drive assembly is disposed on the second driven block. By distributing the second movable groove on the outer periphery of the second driven block, in conjunction with the second protrusion of the reverse thrust module, the brush head can achieve a more complex and comprehensive movement trajectory during operation. When the second driven block reciprocates and rotates along the axial direction, the brush head can not only clean deep into the interdental spaces along the axial direction, but also achieve multi-angle and multi-directional oscillation and rotation through the cooperation of the second movable groove and the second protrusion on the outer periphery. This allows for comprehensive cleaning of various parts of the teeth, such as the labial, lingual, and occlusal surfaces, effectively removing plaque and food debris from the tooth surface and crevices, reducing the risk of tooth decay and periodontal disease, and improving the comprehensiveness of oral hygiene. During the cleaning process, the movement of the second driven block drives the brush head to generate a compound motion, and when the second protrusion moves in the second movable groove, it can make the brush head generate greater friction and impact force.

[0017] In one embodiment, there are multiple second movable slots and multiple second protrusions, with each protrusion corresponding one-to-one with a different second movable slot. This one-to-one correspondence between the multiple second movable slots and the two protrusions allows the second driven block to generate more complex and diverse motion trajectories during movement. When the second driven block reciprocates and rotates along the axial direction, the second protrusions at different positions move within their corresponding second movable slots, driving the brush head to oscillate and rotate at multiple angles and directions. This complex motion can more comprehensively cover the tooth surface, thoroughly cleaning the labial, lingual, and occlusal surfaces, as well as hard-to-reach areas such as interdental spaces and gingival sulci, effectively removing plaque and food debris, reducing the risk of oral diseases, and improving overall cleaning performance.

[0018] In one embodiment, the second movable slot has a third position and a fourth position, wherein the distance from the third position to the first driving component is less than the distance from the fourth position to the first driving component. During the reciprocating motion of the second driven block, the second protrusion abuts against the third and fourth positions of the second movable slot, respectively. The abutment between the third and fourth positions of the second movable slot and the second protrusion causes the second driven block to rotate.

[0019] In one embodiment, the housing assembly includes a battery mounting cavity, a motor limiting cavity, a guide cavity, and a limiting cavity, which are sequentially connected. It also includes a battery, which is mounted on the housing assembly and located in the battery mounting cavity. A first drive component is located in the motor limiting cavity, a first transmission component is located in the guide cavity, and a second transmission component is located in the limiting cavity. The housing assembly has a mounting opening through which a portion of the second drive component extends outside the limiting cavity. By configuring the battery mounting cavity, motor limiting cavity, guide cavity, and limiting cavity in the housing assembly, and ensuring their sequential connection, precise installation and positioning space is provided for each component. With the battery in the battery mounting cavity, the first drive component in the motor limiting cavity, the first transmission component in the guide cavity, and the second transmission component in the limiting cavity, this orderly layout allows the components to support each other during operation, forming a stable overall structure. During the operation of the electric toothbrush, even if the brush head vibrates at high frequencies, the components maintain a relatively fixed position, reducing loosening or displacement of parts caused by vibration, ensuring long-term stable operation of the electric toothbrush, and extending its service life. The interconnected layout of the various chambers makes full use of the internal space of the housing assembly, resulting in a more compact electric toothbrush structure. This rational space planning avoids interference between components while reducing the overall size of the product.

[0020] In one embodiment, a seal is also included, the seal being located at the mounting opening and fitted onto the second drive assembly, the side of the seal away from the second drive assembly being clamped onto the housing assembly.

[0021] In one embodiment, the second drive assembly includes a mounting housing, a sonic motor, a first damping pad, and a second damping pad. The mounting housing is fitted onto the sonic motor, the first damping pad is sandwiched between the sonic motor and the mounting housing, and the second damping pad is sandwiched between the sonic motor and the second transmission assembly.

[0022] In one embodiment, one of the second drive assembly and the second transmission assembly is provided with a limiting groove, and the other of the second drive assembly and the second transmission assembly is provided with a limiting protrusion, wherein the limiting groove and the limiting protrusion are adapted to each other.

[0023] In one embodiment, the first drive component is a motor.

[0024] In one embodiment, the second driving component is an acoustic motor component.

[0025] In one embodiment, the brush head is detachably mounted on the second drive assembly. Attached Figure Description

[0026] Figure 1 A 3D diagram of an electric toothbrush;

[0027] Figure 2 This is a cross-sectional view of an electric toothbrush.

[0028] Figure 3 An exploded image of an electric toothbrush;

[0029] Figure 4 This is a cross-sectional view of an exploded view of an electric toothbrush.

[0030] Figure 5 This is a first perspective view of the first transmission component;

[0031] Figure 6 This is a second perspective view of the first transmission assembly;

[0032] Figure 7 This is an exploded view of the first transmission assembly;

[0033] Figure 8 This is a cross-sectional view of the first transmission assembly;

[0034] Figure 9 This is a perspective view of the second transmission component;

[0035] Figure 10 This is an exploded view of the second transmission assembly;

[0036] Figure 11 This is a cross-sectional view of the second transmission assembly;

[0037] Figure 12 This is a perspective view of a second embodiment of an electric toothbrush;

[0038] Figure 13 This is a cross-sectional view of the second embodiment of the electric toothbrush;

[0039] Figure 14 for Figure 13 Enlarged view of region A;

[0040] Figure 15 This is a perspective view of a second embodiment of the second transmission assembly;

[0041] Figure 16 A 3D view of the second drive component;

[0042] Figure 17 This is a cross-sectional view of the second drive component.

[0043] The correspondence between the reference numerals and the component names is as follows:

[0044] 1. Housing assembly; 101. Battery mounting cavity; 102. Motor limiting cavity; 103. Guide cavity; 104. Limiting cavity; 105. Mounting port;

[0045] 2. First driving component;

[0046] 3 First transmission component, 31 First driven block, 32 Movable module, 321 Movable body, 322 First protrusion, 3101 First movable groove, 3201 First adapter cavity;

[0047] 4 Second transmission component, 41 Second driven block, 42 ​​Reverse thrust module, 421 Reverse thrust fixing block, 422 Second protrusion, 4101 Second movable groove, 4201 Second adapter groove, 411 Limiting protrusion;

[0048] 5 Second drive assembly, 51 Mounting housing, 52 Acoustic motor, 53 First shock absorber, 54 Second shock absorber, 501 Limiting groove;

[0049] 6 batteries;

[0050] 7. Seals;

[0051] 8 brush heads. Detailed Implementation

[0052] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0053] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0054] The electric toothbrush of some embodiments of the present invention is described below with reference to the accompanying drawings.

[0055] Example 1

[0056] like Figures 1 to 11 As shown, this embodiment discloses an electric toothbrush, including: a housing assembly 1; a first drive assembly 2, which is disposed on the housing assembly 1; a first transmission assembly 3, which is disposed on the housing assembly 1 and connected to the first drive assembly 2, and the first transmission assembly 3 can move in a first mode under the drive of the first drive assembly 2; a second transmission assembly 4, which is connected to the first transmission assembly 3 and can move in a second mode under the drive of the first transmission assembly 3; a second drive assembly 5, which is disposed on the second transmission assembly 4; and a brush head 8, which is disposed on the second drive assembly 5.

[0057] The electric toothbrush disclosed in this application has a first transmission component 3 that moves in a first mode under the drive of a first drive component 2, and a second transmission component 4 that moves in a second mode under the drive of the first transmission component 3. These two different movement modes cooperate to achieve diverse cleaning effects. The power generated by the first drive component 2 is efficiently and stably transmitted to the second transmission component 4, ensuring that the second transmission component 4 maintains a stable movement state. During the cleaning process, stable power transmission ensures that the cleaning force of the brush head remains consistent, preventing a decrease in cleaning effect due to power attenuation. The second drive component 5 is mounted on the second transmission component 4 and drives the toothbrush to move. The first drive component 2 focuses on providing power, the first transmission component 3 is responsible for power conversion and initial transmission, and the second transmission component 4 completes the final movement mode realization. Multiple movement modes are output through the cooperation of the first transmission component 3 and the second transmission component 4. The connection and layout between the components are optimized to reduce malfunctions caused by unreasonable structures. The housing component 1 provides a stable mounting base for other components, ensuring that the components will not loosen or shift due to vibration or other reasons during operation. The brush head 8 is mounted on the second drive assembly 5. The brush head 8 moves in the first mode and the second mode along with the second drive assembly 5 and performs cleaning motion under the action of the second drive assembly 5.

[0058] In addition to the features of the above embodiments, this embodiment further specifies that: the first driving component 2 can drive the first transmission component 3 to reciprocate along the axial direction of the housing component 1. By driving the first transmission component 3 to reciprocate axially through the first driving component 2, the electric toothbrush head can generate high-frequency and regular back-and-forth motion, which can efficiently remove plaque from the tooth surface. During brushing, the reciprocating motion of the brush head can penetrate deep into the interdental spaces and fissures of teeth, thoroughly removing plaque, food debris, and other debris attached to the tooth surface through mechanical friction. Compared to other motion methods, the axial reciprocating motion is relatively gentle, effectively reducing irritation to the gums while ensuring cleaning effectiveness. Users with sensitive gums often worry that the vigorous movement of the bristles will cause bleeding or discomfort when using an electric toothbrush; the gentle nature of the axial reciprocating motion makes brushing more comfortable.

[0059] In addition to the features of the above embodiments, this embodiment further specifies that: the first transmission component 3 can drive the second transmission component 4 to reciprocate along the axial direction of the housing component 1 and rotate in both forward and reverse directions around the axis of the housing component 1. Driven by the first transmission component 3, the second transmission component 4 can both reciprocate axially and rotate in both forward and reverse directions. This composite motion mode allows the brush head to achieve multi-dimensional cleaning actions. Axial reciprocating motion can deeply clean the interdental spaces and fissures, removing laterally attached plaque and food debris; forward and reverse rotation can perform circumferential cleaning of the tooth surface, effectively removing vertical stains. The two motion modes work together to comprehensively cover all surfaces of the teeth, including the labial, lingual, and occlusal surfaces, achieving thorough cleaning. Compared to electric toothbrushes with a single motion mode, the cleaning effect is significantly improved, better maintaining oral health.

[0060] like Figure 2 and Figure 3 As shown, in addition to the features of the above embodiments, this embodiment further specifies that the first drive component 2, the first transmission component 3, the second transmission component 4, and the second drive component 5 are arranged sequentially along the axial direction. By arranging the first drive component 2, the first transmission component 3, the second transmission component 4, and the second drive component 5 sequentially along the axial direction, each component forms a stable axial support structure within the housing component 1. This layout allows for tighter connections between components, effectively dispersing vibrations and stresses generated by component movement during electric toothbrush operation, preventing loosening or displacement of parts from affecting normal use. The sequential axial arrangement fully utilizes the internal space of the electric toothbrush housing component 1, making the product structure more compact. Compared to a scattered or irregular component layout, this method avoids wasted space, reduces the overall size of the electric toothbrush, and makes it easier to hold and carry.

[0061] like Figure 5 , Figure 6 and Figure 7As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the first transmission component 3 includes a first driven block 31 and a movable module 32. The first driven block 31 is disposed on the first drive component 2, and the first drive component 2 can drive the first driven block 31 to rotate. The movable module 32 is movably disposed on the housing component 1 and can move along the axial direction. The movable module 32 is adapted to the first driven block 31. When the first driven block 31 rotates, it can drive the movable module 32 to reciprocate along the axial direction. The second transmission component 4 is connected to the movable module 32 in a transmission connection. By driving the first driven block 31 to rotate through the first drive component 2, the first driven block 31, through its adaptation to the movable module 32, converts the rotation into the reciprocating motion of the movable module 32 along the axial direction. This ingenious design efficiently realizes the motion mode required for cleaning with an electric toothbrush. When cleaning teeth, the axial reciprocating motion of the movable module 32 can drive the second transmission component 4, causing the brush head to move back and forth, penetrating deep into the interdental spaces and fissures of teeth, effectively removing plaque and food debris. The adapted transmission between the first driven block 31 and the movable module 32 ensures the stability of power transmission. The first drive component 2 continuously and stably outputs rotational power, and the first driven block 31 accurately transmits it to the moving module 32, so that the moving module 32 maintains a stable frequency and amplitude during axial reciprocating motion.

[0062] like Figure 7 and Figure 8As shown, in addition to the features of the above embodiments, this embodiment further specifies that: one of the first driven block 31 and the movable module 32 is provided with a first movable groove 3101, and the other of the first driven block 31 and the movable module 32 is formed with a first protrusion 322. The first protrusion 322 and the first movable groove 3101 are adapted to each other, and the first protrusion 322 can move within the first movable groove 3101. Through the adaptation design of the first protrusion 322 and the first movable groove 3101, the rotation of the first driven block 31 can be efficiently converted into the reciprocating motion of the movable module 32 along the axial direction. When the first driven block 31 rotates, the first protrusion 322 moves within the first movable groove 3101, and its movement trajectory guides the movable module 32 to perform regular axial reciprocating motion, thereby driving the second transmission component 4 and causing the electric toothbrush head to produce stable reciprocating motion. This precise motion conversion ensures that when cleaning teeth, the brush head can act on the tooth surface at an appropriate frequency and amplitude, effectively removing plaque and food residue, and improving the cleaning effect. For example, when cleaning between teeth, the stable reciprocating motion allows the bristles to penetrate deep into the gaps for a thorough cleaning. The first protrusion 322 and the first movable groove 3101 fit tightly together, reducing power loss during transmission. The cooperation between the two maximizes power transmission and avoids power loss due to excessive gaps or unreasonable structure. During continuous operation of the electric toothbrush, stable power transmission ensures that the brush head maintains a consistent cleaning force, and the cleaning effect is not affected by power attenuation. Even with prolonged use, it maintains efficient cleaning performance and extends the effective usage time after a single charge.

[0063] like Figure 7 and Figure 8As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the first driven block 31 is provided with a first movable groove 3101, the first movable groove 3101 is arranged along the outer periphery of the first driven block 31, the movable module 32 includes a movable body 321 and a first protrusion 322, the movable body 321 is provided with a first fitting cavity 3201, the first protrusion 322 is arranged on the movable body 321 and located on the inner wall of the first fitting cavity 3201, the first fitting cavity 3201 is adapted to the first driven module 31, and the movable body 321 is connected to the second transmission assembly 4 for transmission. By the first movable groove 3101 being arranged along the outer periphery of the first driven block 31, and cooperating with the first protrusion 322 on the movable module 32, a highly efficient power conversion structure is formed. When the first driven block 31 rotates, the first protrusion 322 moves along the outer periphery within the first movable groove 3101, stably converting the circular motion into the axial reciprocating motion of the movable module 32. This design ensures minimal energy loss during power transmission, enabling efficient transfer of power from the first drive component 2 to the second transmission component 4. This provides the electric toothbrush head with stable and powerful reciprocating motion, effectively improving cleaning performance. Whether cleaning the tooth surface or reaching deep into the gaps between teeth, it precisely and efficiently removes plaque and food debris. The peripheral layout of the first movable groove 3101 and the placement of the first protrusion 322 facilitate precise control of the motion parameters of the movable module 32. By adjusting the shape and length of the first movable groove 3101 and the position and size of the first protrusion 322, the frequency, amplitude, and speed of the axial reciprocating motion of the movable module 32 can be precisely adjusted.

[0064] like Figure 7 and Figure 8 As shown, in addition to the features of the above embodiments, this embodiment further defines that: the active body 321 includes a first assembly shell 3211 and a second assembly shell 3212, the first assembly shell 3211 is disposed on the second assembly shell 3212, and the first assembly shell 3211 and the second assembly shell 3212 cooperate to form a first adapter cavity 3201.

[0065] In addition to the features of the above embodiments, this embodiment further specifies that: the first movable groove 3101 has a first position and a second position, the distance from the first position to the first driving component 2 is less than the distance from the second position to the first driving component 2, and the first driven block 31 moves the first protrusion 322 from the first position to the second position or from the second position to the first position during rotation. Through the cooperation of the first position and the second position of the first movable groove 3101 with the first protrusion 322, the movable module 32 can achieve a step-like change in the amplitude or frequency of movement during the rotation of the first driven block 31. When the first protrusion 322 moves from the first position to the second position and from the second position to the first position, the axial reciprocating motion of the movable module 32 can simulate professional brushing techniques, providing users with a more scientific and comprehensive oral cleaning solution.

[0066] like Figure 9 and Figure 10 As shown, in addition to the features of the above embodiments, this embodiment further defines: the second transmission assembly 4 includes a second driven block 41 and a reverse thrust module 42. The second driven block 41 is disposed on the first transmission assembly 3 and can rotate relative to the first transmission assembly 3. The first transmission assembly 3 can drive the second driven block 41 to reciprocate axially. The reverse thrust module 42 is adapted to the second driven block 41. When the second driven block 41 reciprocates axially, the second driven block 42 abuts against the reverse thrust module 42. When the reverse thrust module 42 abuts against the reverse thrust module 41, the reverse thrust module 42 drives the second driven block 41 to rotate around the axis. By driving the second driven block 41 to reciprocate axially through the first transmission assembly 3, and simultaneously adapting to the second driven block 41, the reverse thrust module 42 interacts to drive the second driven block 41 to rotate during the reciprocating motion, enabling the brush head to achieve a composite motion of axial reciprocating and rotation. This composite motion can clean teeth from multiple dimensions. The axial reciprocating motion can penetrate deep into the interdental spaces to remove vertical stains, while the rotation can perform circular polishing on the tooth surface to remove horizontally attached plaque and food debris.

[0067] like Figure 10 and Figure 11 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: one of the second driven block 41 and the reverse push module 42 is provided with a second movable groove 4101, and the other of the second driven block 41 and the reverse push module 42 is provided with a second protrusion 422. The second protrusion 422 is adapted to the second movable groove 4101, and the second protrusion 422 can move within the second movable groove 4101. Through the adaptation design of the second protrusion 422 and the second movable groove 4101, it is ensured that the axial reciprocating motion of the second driven block 41 can be stably converted into rotation. When the second driven block 41 reciprocates axially, the second protrusion 422 moves within the second movable groove 4101, and its movement trajectory guides the second driven block 41 to rotate, so that the electric toothbrush head achieves compound motion. This precise motion conversion method reduces energy loss during power transmission, ensures that the brush head obtains stable and sufficient power, and can clean with appropriate force and frequency whether cleaning the tooth surface or deep into the gaps between teeth, thereby improving cleaning efficiency and effect. By changing the shape and length of the second movable groove 4101 and the position and size of the second protrusion 422, the rotation angle, speed and amplitude of the second driven block 41 can be flexibly adjusted.

[0068] like Figure 10 and Figure 11As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the second driven block 41 is provided with a second movable groove 4101, the second movable groove 4101 is distributed on the outer periphery of the second driven block 41, the reverse thrust module 42 includes a reverse thrust fixing block 421 and a second protrusion 422, the reverse thrust fixing block 421 is disposed on the housing assembly 1, the reverse thrust fixing block 421 is provided with a second adapter groove 4201, the second protrusion 421 is disposed on the reverse thrust fixing block 421 and located on the inner wall of the second adapter groove 4201, the second adapter groove 4201 is adapted to the second driven block 41, and the second drive assembly 5 is disposed on the second driven block 41. By distributing the second movable groove 4101 on the outer periphery of the second driven block 41, and cooperating with the second protrusion 422 of the reverse thrust module 42, the brush head can achieve a more complex and comprehensive movement trajectory during operation. When the second driven block 41 reciprocates and rotates axially, the brush head can not only clean deep into the gaps between teeth axially, but also achieve multi-angle and multi-directional oscillation and rotation through the cooperation of the second movable groove 4101 and the second protrusion 422 on the outer periphery. This allows for comprehensive cleaning of all parts of the teeth, including the labial, lingual, and occlusal surfaces, effectively removing plaque and food debris from the tooth surface and gaps, reducing the risk of tooth decay and periodontal disease, and improving the overall cleanliness of the oral cavity. During the cleaning process, the movement of the second driven block 41 drives the brush head to produce a compound motion, and the movement of the second protrusion 422 within the second movable groove 4101 generates greater friction and impact force in the brush head.

[0069] like Figure 10 and Figure 11 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the number of second movable slots 4101 is multiple, the number of second protrusions 422 is multiple, and the multiple second protrusions 422 correspond one-to-one with the multiple second movable slots 4101. Through the one-to-one correspondence between the multiple second movable slots 4101 and the second protrusions 422, the second driven block 41 can generate more complex and diverse motion trajectories during movement. When the second driven block 41 reciprocates and rotates along the axial direction, the second protrusions 422 at different positions move within the corresponding second movable slots 4101, driving the brush head to oscillate and rotate at multiple angles and directions. This composite motion can more comprehensively cover the tooth surface, thoroughly cleaning the labial, lingual, and occlusal surfaces of the teeth, as well as hard-to-clean areas such as interdental spaces and gingival sulci, effectively removing plaque and food debris, reducing the risk of oral diseases, and improving the overall cleaning effect.

[0070] In addition to the features of the above embodiments, this embodiment further specifies that: the second movable groove 4101 has a third position and a fourth position, the distance of the third position from the first driving component 2 is less than the distance of the fourth position from the first driving component 2, and when the second driven block 41 reciprocates, the second protrusion 422 abuts against the third position and the fourth position of the second movable groove 4101 respectively. The second driven block 41 rotates because the third and fourth positions of the second movable groove 4101 abut against the second protrusion 422.

[0071] like Figure 4 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the housing assembly 1 is provided with a battery mounting cavity 101, a motor limiting cavity 102, a guide cavity 103, and a limiting cavity 104, which are sequentially connected. It also includes a battery 6, which is disposed on the housing assembly 1 and located in the battery mounting cavity 101. A first drive assembly 2 is located in the motor limiting cavity 102, a first transmission assembly 3 is located in the guide cavity 103, and a second transmission assembly 4 is located in the limiting cavity 104. The housing assembly 1 has a mounting port 105, and a portion of the second drive assembly 5 extends through the mounting port 105 to the outside of the limiting cavity 104. By providing the battery mounting cavity 101, motor limiting cavity 102, guide cavity 103, and limiting cavity 104 in the housing assembly 1, and ensuring their sequential connection, precise installation and positioning space is provided for each component. Battery 6 is placed in battery mounting cavity 101, first drive assembly 2 is in motor limiting cavity 102, first transmission assembly 3 is located in guide cavity 103, and second transmission assembly 4 is in limiting cavity 104. This orderly layout allows the components to support each other during operation, forming a stable overall structure. During the operation of the electric toothbrush, even if the brush head generates high-frequency vibrations, the components maintain a relatively fixed position, reducing loosening or displacement of parts caused by vibration, ensuring long-term stable operation of the electric toothbrush, and extending its service life. The sequentially connected layout of the cavities makes full use of the internal space of the housing assembly 1, making the electric toothbrush structure more compact. The rational space planning avoids mutual interference between components while reducing the overall size of the product.

[0072] In addition to the features of the above embodiments, this embodiment further specifies that the first drive component 2 is a motor.

[0073] In addition to the features of the above embodiments, this embodiment further specifies that the second drive component 5 is an acoustic motor component.

[0074] In addition to the features of the above embodiments, this embodiment further includes a brush head 8, which is detachably mounted on the second drive assembly 5.

[0075] Example 2

[0076] like Figure 12 , Figure 13 , Figure 14 , Figure 16 and Figure 17 As shown, in addition to the features of the above embodiments, this embodiment further defines that: the second drive assembly 5 includes a mounting housing 51, a sonic motor 52, a first damping pad 53 and a second damping pad 54, the mounting housing 51 is sleeved on the sonic motor 52, the first damping pad 53 is sandwiched between the sonic motor 52 and the mounting housing 51, and the second damping pad 54 is sandwiched between the sonic motor 52 and the second transmission assembly 4.

[0077] like Figure 15 and Figure 16 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: one of the second drive component 5 and the second transmission component 4 is provided with a limiting groove 501, and the other of the second drive component 5 and the second transmission component 4 is provided with a limiting protrusion 411, and the limiting groove 501 and the limiting protrusion 41 are adapted to each other.

[0078] like Figure 12 , Figure 13 and Figure 4 As shown, in addition to the features of the above embodiments, this embodiment further includes a sealing member 7, which is located at the mounting port 105 and sleeved on the second drive assembly 5, with the side of the sealing member 7 away from the second drive assembly 5 clamped on the housing assembly 1.

[0079] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0080] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An electric toothbrush characterized by comprising: The electric toothbrush includes: Housing assembly (1); A first drive assembly (2) is disposed on the housing assembly (1); A first transmission component (3) is disposed on the housing component (1), and the first transmission component (3) is connected to the first drive component (2). The first transmission component (3) is able to move in a first mode under the drive of the first drive component (2). The second transmission component (4) is connected to the first transmission component (3) in a transmission manner, and the second transmission component (4) can move in a second mode under the drive of the first transmission component (3); The second drive assembly (5) is disposed on the second transmission assembly (4); Brush head (8) is disposed on the second drive assembly (5).

2. The electric toothbrush according to claim 1, characterized in that, The first drive assembly (2) is capable of driving the first transmission assembly (3) to reciprocate along the axial direction of the housing assembly (1); And / or the first transmission component (3) can drive the second transmission component (4) to reciprocate along the axial direction of the housing component (1) and rotate in the forward and reverse directions with the axial center of the housing component (1) as the rotation center; And / or the first drive assembly (2), the first transmission assembly (3), the second transmission assembly (4) and the second drive assembly (5) are arranged sequentially along the axial direction; And / or the housing assembly (1) is provided with a battery mounting cavity (101), a motor limiting cavity (102), a guide cavity (103), and a limiting cavity (104), the battery mounting cavity (101), the motor limiting cavity (102), the guide cavity (103), and the limiting cavity (104) being sequentially connected, and also includes a battery (6), the battery (6) being disposed on the housing assembly (1) and located at the battery mounting cavity (101), the first drive assembly (2) being located at the motor limiting cavity (102), and the first transmission assembly ( 3) The second transmission assembly (4) is located in the guide cavity (103), the second transmission assembly (4) is located in the limiting cavity (104), the housing assembly (1) has an installation port (105), a portion of the second drive assembly (5) extends through the installation port (105) to the outside of the limiting cavity (104), and also includes a sealing member (7), the sealing member (7) is located in the installation port (105) and sleeved on the second drive assembly (5), the side of the sealing member (7) away from the second drive assembly (5) is clamped on the housing assembly (1).

3. The electric toothbrush according to claim 1, wherein The first transmission assembly (3) includes a first driven block (31) and a movable module (32). The first driven block (31) is disposed on the first driving assembly (2). The first driving assembly (2) can drive the first driven block (31) to rotate. The movable module (32) is movably disposed on the housing assembly (1) and can move along the axial direction. The movable module (32) is adapted to the first driven block (31). When the first driven block (31) rotates, it can drive the movable module (32) to reciprocate along the axial direction. The second transmission assembly (4) is connected to the movable module (32) in a transmission connection.

4. The electric toothbrush according to claim 3, wherein One of the first driven block (31) and the active module (32) is provided with a first active groove (3101), and the other of the first driven block (31) and the active module (32) is formed with a first protrusion (322). The first protrusion (322) is adapted to the first active groove (3101) and the first protrusion (322) is able to move within the first active groove (3101).

5. The electric toothbrush according to claim 4, characterized in that, The first driven block (31) is provided with the first active groove (3101), the first active groove (3101) is arranged along the outer periphery of the first driven block (31), the active module (32) includes an active body (321) and the first protrusion (322), the active body (321) is provided with a first adapter cavity (3201), the first protrusion (322) is arranged on the active body (321) and located on the inner wall of the first adapter cavity (3201), the first adapter cavity (3201) is adapted to the first driven module (31), and the active body (321) is connected to the second transmission component (4) in a transmission connection; And / or the first active slot (3101) has a first position and a second position, the first position being less than the distance between the first drive component (2) and the second position, and the first driven block (31) moves the first protrusion (322) from the first position to the second position or from the second position to the first position during rotation.

6. The electric toothbrush according to claim 1, wherein The second transmission assembly (4) includes a second driven block (41) and a reverse thrust module (42). The second driven block (41) is disposed on the first transmission assembly (3). The second driven block (41) can rotate relative to the first transmission assembly (3). The first transmission assembly (3) can drive the second driven block (41) to reciprocate along the axial direction. The reverse thrust module (42) is adapted to the second driven block (41). When the second driven block (41) reciprocates along the axial direction, the second driven block (42) abuts against the reverse thrust module (42). When the reverse thrust module (42) abuts against the reverse thrust module (41), the reverse thrust module (42) drives the second driven block (41) to rotate around the axis.

7. The electric toothbrush according to claim 6, wherein One of the second driven block (41) and the reverse thrust module (42) is provided with a second movable groove (4101), and the other of the second driven block (41) and the reverse thrust module (42) is provided with a second protrusion (422). The second protrusion (422) and the second movable groove (4101) are adapted to each other and the second protrusion (422) can move within the second movable groove (4101).

8. The electric toothbrush according to claim 7, characterized in that, The second driven block (41) is provided with the second movable groove (4101), which is distributed on the outer periphery of the second driven block (41). The reverse thrust module (42) includes a reverse thrust fixing block (421) and a second protrusion (422). The reverse thrust fixing block (421) is disposed on the housing assembly (1). The reverse thrust fixing block (421) is provided with a second adapter groove (4201). The second protrusion (421) is disposed on the reverse thrust fixing block (421) and located on the inner wall of the second adapter groove (4201). The second adapter groove (4201) is adapted to the second driven block (41). The second drive assembly (5) is disposed on the second driven block (41). And / or the number of the second active grooves (4101) is multiple, the number of the second protrusions (422) is multiple, and the multiple second protrusions (422) correspond one-to-one with the multiple second active grooves (4101); And / or the second movable groove (4101) has a third position and a fourth position, the third position being less than the distance from the first drive component (2) to the fourth position, and the second protrusion (422) abutting against the third position and the fourth position of the second movable groove (4101) respectively when the second driven block (41) reciprocates.

9. The electrically powered toothbrush according to claim 1, characterized in that The second drive assembly (5) includes a mounting housing (51), an acoustic motor (52), a first damping pad (53), and a second damping pad (54). The mounting housing (51) is sleeved on the acoustic motor (52). The first damping pad (53) is sandwiched between the acoustic motor (52) and the mounting housing (51). The second damping pad (53) is sandwiched between the acoustic motor (52) and the second transmission assembly (4). And / or one of the second drive assembly (5) and the second transmission assembly (4) is provided with a limiting groove (501), and the other of the second drive assembly (5) and the second transmission assembly (4) is provided with a limiting protrusion (411), the limiting groove (501) and the limiting protrusion (41) being adapted to each other.

10. The electric toothbrush according to claim 1, characterized in that, The first drive component (2) is a motor; And / or the second drive component (5) is an acoustic motor component; And / or the brush head (8) may be detachably mounted on the second drive assembly (5).

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