Oral cleaning device

Abstract

The oral cleaning device provided by the embodiment of the application comprises: a first driving member; a first transmission shaft connected to the first driving member; a second driving member; a second transmission shaft connected to the second driving member and sleeved on the first transmission shaft, wherein the first transmission shaft is rotatably arranged relative to the second transmission shaft; a flow guide cavity is arranged in the first transmission shaft; or the flow guide cavity is formed between the first transmission shaft and the second transmission shaft; a fluid power member has a flow guide channel, and the flow guide cavity is communicated with the flow guide channel; a brush head is provided with an outlet; the brush head is connected to the first transmission shaft and the second transmission shaft, and the flow guide cavity is communicated with the outlet. The first transmission shaft and the second transmission shaft combine the flow guide cavity to realize the functions of transmitting rotational torque, vibration waves and fluid, and transmit the above-mentioned forces or motion forms and fluid to the brush head, so that the oral cleaning device provided by the application can provide a three-in-one oral cleaning function for consumers, thereby meeting the needs of consumers for various cleaning functions and improving the experience of consumers.

Description

Technical Field

[0001] This invention relates to the field of daily necessities technology, and in particular to an oral hygiene device. Background Technology

[0002] In today's world, where people place increasing emphasis on oral care, electric toothbrushes have gradually generated significant market demand. Currently, electric toothbrushes on the market generally offer one or more of the following functions: sonic cleaning, rotation, or water spray, or any combination of both. Therefore, the cleaning capabilities of current electric toothbrushes are limited and cannot meet consumers' needs for multiple cleaning methods. The structural design of electric toothbrushes often includes a transmission structure connecting the drive motor and the toothbrush head. The drive motor may include, for example, a sonic motor that generates vibration, a rotary motor that generates rotational torque, and a pump device that powers the delivery of liquid. The sonic motor and rotary motor are generally coupled with a transmission shaft for force transmission. If an electric toothbrush needs to perform multiple functions, such as bristle rotation and brush head vibration, then both the sonic motor and the rotary motor must be included within the toothbrush housing. The housing of an electric toothbrush is generally cylindrical, similar to a traditional toothbrush, for ease of grip. However, if an electric toothbrush simply arranges a sonic motor and a rotary motor radially within the casing to achieve the aforementioned functions, with each motor's transmission shaft transmitting force independently, the casing diameter would be excessively large, making it inconvenient for the user to hold. Furthermore, when the sonic motor and rotary motor are arranged along the length of the casing, the placement of their transmission shafts to prevent interference and ensure smooth force transmission becomes problematic. Therefore, current electric toothbrushes generally only offer the rotation or vibration functions of the brush head, and struggle to combine multiple cleaning functions. Summary of the Invention

[0003] To address the technical problem that existing electric toothbrushes cannot combine multiple cleaning functions, thus failing to meet consumers' demands for diverse cleaning methods, this invention provides an oral cleaning device. By incorporating a fluid dynamic component, a first drive component, a second drive component, and a first and second transmission shaft in a nested relationship, the device achieves the transmission of rotational torque, vibration, and fluid. This allows the oral cleaning device to simultaneously perform rotational cleaning, vibration cleaning, and rinsing cleaning, thereby satisfying consumers' needs for multiple cleaning methods.

[0004] An oral cleaning device provided in this embodiment of the invention includes: a first driving member; a first transmission shaft connected to the first driving member; a second driving member; a second transmission shaft connected to the second driving member, sleeved on the first transmission shaft, and the first transmission shaft being rotatably disposed relative to the second transmission shaft; a flow guiding cavity provided in the first transmission shaft; or, a flow guiding cavity formed between the first transmission shaft and the second transmission shaft; a fluid dynamic member having a flow guiding channel, the flow guiding cavity communicating with the flow guiding channel; a brush head having an outlet on its surface; the brush head being connected to the first transmission shaft and the second transmission shaft, and the flow guiding cavity communicating with the outlet.

[0005] In one embodiment of the present invention, the second transmission shaft passes through the second driving member, and the first transmission shaft passes through the second driving member.

[0006] In one embodiment of the present invention, the first drive shaft has a drive end, the drive end extends through the second drive member and the second drive shaft, and the brush head is connected to the drive end.

[0007] In one embodiment of the present invention, the first transmission shaft has a transmission end, on which a first rotatable connection structure is formed.

[0008] In one embodiment of the present invention, the brush head includes a second connector, one end of which has a second rotatable connection structure; the second rotatable connection structure cooperates with and connects to the first rotatable connection structure.

[0009] In one embodiment of the present invention, the second connector has a fluid channel, a guide cavity is formed between the first drive shaft and the second drive shaft, and a first flow channel is formed on the second rotary connection structure, the fluid channel being connected to the guide cavity through the first flow channel.

[0010] In one embodiment of the present invention, the second driving member is disposed on one side of the first driving member, and the hydrodynamic member is disposed on the side of the first driving member away from the second driving member.

[0011] In one embodiment of the present invention, the flow guiding channel communicates the flow guiding cavity between the first driving member and the fluid dynamic member; or, the flow guiding channel communicates the flow guiding cavity between the second driving member and the first driving member.

[0012] In one embodiment of the present invention, a flow guide cavity is formed between the first drive shaft and the second drive shaft, and a second flow channel is formed between the first drive shaft and the second drive member, and the second drive shaft is connected to the first drive shaft at the second flow channel; the flow guide cavity is connected to the flow guide channel through the second flow channel.

[0013] In one embodiment of the present invention, the second driving member and the first driving member have a connection between the first drive shaft and the second drive shaft; the oral cleaning device further includes a sealing structure, the sealing structure being disposed at and sealing the connection.

[0014] In one embodiment of the present invention, the brush head includes: a handle; a head connected to the handle; a first connecting member disposed within the handle and located on the side of the handle away from the head, wherein a first drive shaft and a second drive shaft pass through the first connecting member, and the second drive shaft is connected to the first connecting member; a second connecting member disposed within the brush head and located on the side of the first connecting member adjacent to the head, the second connecting member being connected to the first drive shaft; the second connecting member having a fluid channel communicating with the guide cavity; and a rotating member connected to the second connecting member, wherein the fluid channel passes through the rotating member and the second connecting member, and an outlet is located on the rotating member and communicating with the fluid channel.

[0015] The technical solutions provided in the embodiments of the present invention have at least the following beneficial effects: The first drive shaft and the second drive shaft can transmit two different forces or motions respectively; for example, the first drive shaft is used to transmit torque, and the second drive shaft is used to transmit vibration, or vice versa; correspondingly, the first drive can be, for example, a rotator that generates torque, and the second drive can be, for example, a vibrator that generates vibration waves, or vice versa; the first drive shaft and the second drive shaft, combined with the flow guide cavity, can realize the function of transmitting torque, vibration waves and fluid, and the transmission of the above-mentioned forces or motions and fluids will not interfere with each other, thereby smoothly transmitting the above-mentioned forces or motions and fluids to the brush head. Therefore, the oral cleaning device provided by the embodiments of the present invention can provide consumers with a three-in-one oral cleaning function, thereby meeting consumers' needs for multiple cleaning functions and improving consumers' experience. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1a This is a three-dimensional structural diagram of an oral cleaning device provided in an embodiment of the present invention.

[0018] Figure 1b for Figure 1a The diagram shows a magnified view of a portion of the brush head.

[0019] Figure 2a Figure 1 shows an exploded view of the brush head and main housing.

[0020] Figure 2b A transmission component provided in an embodiment of the present invention Figure 2a The diagram shows a partially enlarged view of the transmission end.

[0021] Figure 2c Another transmission component provided in the embodiments of the present invention is Figure 2a The diagram shows a partially enlarged view of the transmission end.

[0022] Figure 2d for Figure 2a The diagram shows a partially enlarged view of the transmission end when it is connected to the rotating connector.

[0023] Figure 2e for Figure 2d The diagram shows a cross-sectional view of the connection between the transmission end and the rotating connector.

[0024] Figure 3 This is an exploded structural diagram of a component located inside the main housing shown in Figure 1, provided as an embodiment of the present invention.

[0025] Figure 4a for Figure 3 The diagram shows a cross-sectional view of the components inside the main housing.

[0026] Figure 4b for Figure 4a A partially enlarged schematic diagram of the sealing structure shown.

[0027] Figure 5a This is an exploded structural diagram of another component located within the main housing shown in Figure 1, provided as an embodiment of the present invention.

[0028] Figure 5b for Figure 5a The diagram shows a partially enlarged view of the flow guide groove of the rotating shaft.

[0029] Figure 6a for Figure 5a The diagram shows a cross-sectional view of the components inside the main housing.

[0030] Figure 6b for Figure 5a A partially enlarged schematic diagram of the sealing structure shown.

[0031] Figure 6c for Figure 5aWhen the components shown are inside the main housing, as in... Figure 5b A schematic diagram of the cross-sectional structure of the flow guide groove shown.

[0032] Figure 7 for Figure 2a The diagram shows the exploded structure of the brush head.

[0033] Figure 8 for Figure 2a The diagram shows a cross-sectional view of the brush head.

[0034] Figure 9 for Figure 8 The diagram shows a partially enlarged view of the brush head when connected to the transmission component.

[0035] Figure 10 for Figure 8 The diagram shows a partially enlarged view of the brush head when connected to another transmission component. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] It should be noted that the terms "first," "second," and "one end," etc., used in the specification and claims of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, products, or apparatus.

[0038] Referring to Figure 1, an embodiment of the present invention provides an oral cleaning device 10. The oral cleaning device 10 includes, as shown in Figure 1... Figure 3 or Figure 5aThe diagram shows a first driving component 16, a second driving component 14, a first transmission shaft 181, a second rotating shaft 183, a hydrodynamic component 12, and a brush head 13. The first transmission shaft 181 is connected to the first driving component 16. The second transmission shaft 183 is connected to the second driving component 14 and is sleeved on the first transmission shaft 181, with the first transmission shaft 181 rotatably disposed relative to the second transmission shaft 183. A flow guide cavity 184 is provided within the first transmission shaft 181; alternatively, a flow guide cavity 184 is formed between the first transmission shaft 181 and the second transmission shaft 183. The hydrodynamic component 12 has a flow guide channel 122, and the flow guide cavity 184 communicates with the flow guide channel 122. The surface of the brush head 13 is provided with... Figure 1b The outlet 135 is shown. The brush head 13 is connected to the first drive shaft 181 and the second drive shaft 183, and the flow guide cavity 184 is connected to the outlet 135.

[0039] In the oral cleaning device 10 provided in this embodiment of the invention, the first drive shaft 181 and the second drive shaft 183 can transmit two different forces or movements respectively. For example, the first drive shaft 181 is used to transmit torque, and the second drive shaft 183 is used to transmit vibration, or vice versa. Accordingly, the first drive 16 can be, for example, a rotator that generates torque, and the second drive 14 can be, for example, a vibrator that generates vibration waves, or vice versa. The first drive shaft 181 and the second drive shaft 183, combined with the flow guide cavity 184, can realize the function of transmitting torque, vibration waves, and fluid, and transmit the above-mentioned force or movement forms, as well as fluid, to the brush head 13. Thus, the oral cleaning device 10 provided in this embodiment of the invention can provide consumers with a three-in-one oral cleaning function, thereby meeting consumers' needs for multiple cleaning functions and improving the consumer experience.

[0040] Specifically, the fluid transmitted by the fluid dynamic component 12 can be a gas and / or a liquid, and the liquid can be water or other cleaning fluid, etc. Correspondingly, the fluid dynamic component 12 can be, for example, a mini air pump or a liquid pump, which can provide power to the fluid, such as a gas or liquid, to transport the gas or liquid from one location to another. The vibrator can be, for example, an eccentric motor, a magnetic levitation motor, or a piezoelectric transducer made of a piezoelectric crystal, etc. The first drive shaft 181 and the second drive shaft 183 form a transmission assembly 18 by means of a sleeve structure, for example. When the vibrator vibrates, it will, for example, drive the second drive shaft 183 to vibrate, thereby driving the transmission assembly 18 to vibrate together, and thus can therefore... Figure 2b Or such as Figure 2c The transmission end 182 shown transmits vibration waves outward from one side. When the transmission end 182 is connected to, for example, Figure 2aWhen the brush head 13 is applied, it can cause the brush head 13 to vibrate together. The second driving member 14 can drive the transmission component 18 to vibrate repeatedly in a single direction, randomly, or in a circular motion. The vibration waves generated by the second driving member 14 are ultimately transmitted to the bristles of the brush head 13. The vibration of the bristles causes the surrounding air to vibrate. When the vibration frequency of the air caused by the bristles reaches 20,000 Hz, the oral cleaning device 10 can achieve ultrasonic cleaning. The first driving member 16 is, for example, a synchronous or asynchronous motor, and drives the first transmission shaft 181 to rotate. The brush head 13 may include, for example, a rotating shaft structure, gear structure, etc., used in conjunction with the first transmission shaft 181 to transmit the torque of the first transmission shaft 181 and cause the bristles of the brush head 13 to rotate, thereby enabling the oral cleaning device 10 to have a rotational cleaning function. The oral cleaning device 10 may also include an integrated circuit for controlling the fluid dynamic component 12, the second drive component 14, and the first drive component 16. Combined with the sleeve structure of the second drive shaft 183 and the first drive shaft 181, and the arrangement of the flow guide cavity 184, this allows the user to independently activate or arbitrarily combine the rotation cleaning function, vibration cleaning function, and water spray cleaning function, providing more usage options. For example, when the rotation function is activated alone, the first drive shaft 181 rotates within the second drive shaft 183 under the drive of the first drive component 16; when the vibration cleaning function is activated alone, the second drive shaft 183 vibrates under the drive of the second drive component 14; and the fluid dynamic component 12 delivers fluid to the brush head 13 through the flow guide cavity 184. These three cleaning functions can operate independently or in any combination, and there is no mutual interference between them during operation.

[0041] In summary, the combined use of the first drive shaft 181 and the second drive shaft 183 can simultaneously transmit the rotational torque from the first drive member 16 and the vibration wave from the second drive member 14. The first drive shaft 181, for example, is provided with... Figure 2b or Figure 2c The transmission end 182 is shown. The transmission end 182 is used to connect to, for example... Figure 8 The brush head 13, as shown, transmits the rotational torque from the first drive member 16 to a rotating component within the brush head 13. Based on this, the flow guide cavity 184 is formed through the structural cooperation of the first drive shaft 181 and the second drive shaft 183. The flow guide cavity, for example... Figure 4b As shown, it is located within the first drive shaft 181, or as... Figure 6bThe guide shaft 184 is located between the first drive shaft 181 and the second drive shaft 183. The guide cavity 184 connects to the guide channel 122 of the fluid dynamic component 12. Therefore, the structural cooperation between the first drive shaft 181 and the second drive shaft 183 can also transmit fluid from the fluid dynamic component 12. Thus, by setting the first drive shaft 181 and the second drive shaft 183, the oral cleaning device 10 realizes the function of transmitting rotational torque, vibration waves, and fluid, and can be used in conjunction with the brush head 13, enabling the oral cleaning device 10 to provide users with rotating bristle cleaning, vibration cleaning, and water spray cleaning functions.

[0042] Further, see Figure 7 and Figure 8 The brush head 13 has, for example, a fluid channel 132, which is connected to the flow guide cavity 184.

[0043] Specifically, the brush head 13 can be detachably connected to the transmission assembly 18; or, part or all of the brush head 13 is integrally formed with part or all of the transmission assembly 18. The oral cleaning device 10 includes, for example, a main housing 15 for accommodating the hydrodynamic component 12, the second drive component 14, the first drive component 16, and the transmission assembly 18. The brush head 13 can be detachably connected to the main housing 15 via a slot, threaded structure, or the like.

[0044] Further, see Figure 4a or Figure 6a The second drive shaft 183 passes through the second drive member 14, and the first drive shaft 181 passes through the second drive member 14.

[0045] By designing the first drive shaft 181 to pass through the second drive member 14 and the second drive shaft 183 to be sleeved on the first drive shaft 181, vibration waves generated by the second drive member 14 can propagate not only through the second drive shaft 183 but also through the first drive shaft 181. Furthermore, since the first drive shaft 181 passes through both the second drive shaft 183 and the second drive member 14, the required configuration space for the first drive shaft 181, the second drive shaft 183, and the second drive member 14 can be further reduced. This results in a smaller diameter for the main housing 15 when it is housed within the main housing 15, making it easier for the user to hold.

[0046] Specifically, when the second driving element 14 is, for example, a magnetic levitation motor or a piezoelectric transducer, see [reference needed]. Figure 4a or Figure 6aThe first drive shaft 181 and the second drive shaft 183 can pass directly through the second drive member 14, thereby saving the space required for the arrangement of the first drive shaft 181 and the second drive shaft 183. The second drive shaft 183 can extend out of the second drive member 14 at one end or at both ends.

[0047] Furthermore, see Figure 4a or Figure 6a The first drive shaft 181 has a drive end 182. The drive end 182 extends through the second drive member 14 and the second drive shaft 183, and the brush head 13 is connected to the drive end 182.

[0048] Furthermore, depending on the arrangement of the first driving member 16 and the second driving member 14, the position of the first transmission shaft 181 relative to the second driving member 14 can also be configured differently. For example, the second driving member 14 can be located on the side of the first driving member 16 away from the transmission end 182. In this case, the first transmission shaft 181 does not need to pass through the second driving member 14. Correspondingly, the second transmission shaft 183 does not need to be a rod structure in the strict sense, but can have a partially curved sheet structure that passes around the first driving member 16 from the side and is then sleeved on the first transmission shaft 181 to transmit vibration waves.

[0049] Further, see Figure 2b , Figure 2d as well as Figure 2e The first drive shaft 181 has a drive end 182, and a first rotatable connection structure 188 is formed on the drive end 182.

[0050] Accordingly, the brush head 13 includes a second connector 131, one end of which has a second rotatable connection structure 137. The second rotatable connection structure 137 engages with and connects to the first rotatable connection structure 188.

[0051] The first drive shaft 181 transmits rotational torque, for example. The transmission end 182 and the second connecting member 131 are connected through the cooperation of the first rotating connection structure 188 and the second rotating connection structure 137, so that the rotational torque is transmitted from the first drive shaft 181 to the second connecting member 131. The first rotating connection structure 188 and the second rotating connection structure 137 transmit torque, for example, through a snap-fit ​​structure.

[0052] Specifically, see Figure 2b , Figure 2d and Figure 2eThe first rotating connection structure 188 is, for example, a connecting groove on the transmission end 182, and the second rotating connection structure 137 is, for example, a protruding structure on the second connector 131. The protruding structure and the connecting groove cooperate to achieve a snap-fit ​​connection. Of course, the first rotating connection structure 188 can also be a protruding structure, and correspondingly, the second rotating connection structure 137 can be a connecting groove. The rotating connection groove 188 provided on the transmission end 182 can be a single groove or multiple grooves, for example... Figure 2a and Figure 2b The multi-groove structure shown correspondingly shapes the transmission end 182 into a shape similar to a screwdriver head. Therefore, the second rotary connection structure 137 can also be a single protruding structure or multiple protruding structures, for example... Figure 2d and 2e The multi-protruding structure shown.

[0053] Furthermore, see Figure 2e The second connector 131 has a fluid channel 132. When a flow guide cavity 184 is formed between the first drive shaft 181 and the second drive shaft 183, the second rotary connection structure 137 has a first flow channel 139. The fluid channel 132 is connected to the flow guide cavity 184 through the first flow channel 139.

[0054] Based on the torque transmission between the first drive shaft 181 and the second connector 131 via the first rotary connection structure 188 and the second rotary connection structure 137, the first flow channel 139 provided on the second rotary connection structure 137 enables the connection between the fluid channel 132 and the guide cavity 184. Therefore, there is no need to additionally create a groove structure at the transmission end 182, thereby ensuring the strength of the transmission end 182 when transmitting rotational torque and preventing damage.

[0055] See Figure 2c , Figure 4a and Figure 4b In some embodiments of the present invention, the flow guiding cavity 184 is disposed within the first drive shaft 181, and the first drive shaft 181 forms the drive end 182 and has a first opening 186. Therefore, fluid from the hydrodynamic component 12 is transferred to the drive end 182 within the first drive shaft 181. In this embodiment, since the first drive shaft 181 only needs to have openings on one side adjacent to the hydrodynamic component 12 and at the drive end 182 to achieve fluid transfer, it is easier to achieve good sealing within the oral cleaning device 10, preventing liquids such as water from leaking out from the corresponding transmission assembly 18, thereby interfering with or corroding the electronic components within the oral cleaning device 10.

[0056] In addition, see Figure 2b , Figures 5a to 6c In other embodiments of the present invention, the flow guiding cavity 184 is disposed between the second drive shaft 183 and the first drive shaft 181. The first drive shaft 181 forms the drive end 182, and the second drive shaft 183 forms a first opening 186 at the drive end 182. See also Figure 6a and Figure 6b At this time, the first drive shaft 181 is a solid structure. Therefore, when the first drive shaft 181 rotates to transmit torque and vibrates due to the influence of the second drive member 14, it is less likely to be damaged, thereby extending the service life of the first drive shaft 181.

[0057] See Figure 4a and Figure 6a As shown, in one embodiment of the oral cleaning device 10 provided by the present invention, the second driving member 14 is disposed on one side of the first driving member 16, and the hydrodynamic member 12 is disposed on the side of the first driving member 16 away from the second driving member 14.

[0058] Since the first driving member 16, the second driving member 14, and the fluid driving member 12 are often housed in a structure, for example, within the main housing 15, therefore... Figure 6a In the structural configuration shown, the radial dimension of the main housing 15 can be made smaller to facilitate the user's grip on the oral cleaning device 10 through the main housing 15.

[0059] Furthermore, based on the fact that the guide cavity 184 is located between the second drive shaft 183 and the first drive shaft 181, see... Figures 5b to 6c The first drive shaft 181 forms a second flow channel 185 between the second drive member 14 and the first drive member 16, and the second drive shaft 183 is connected to the first drive shaft 181 at the second flow channel 185. The flow guide cavity 184 is connected to the flow guide channel 122 through the second flow channel 185.

[0060] In this embodiment, since the guide cavity 184 is disposed between the first drive shaft 181 and the second drive shaft 183, by providing such a guide cavity 184 on the first drive shaft 181... Figure 5b The second flow channel 185 shown connects the flow guide cavity 184 and the flow guide channel 122. Therefore, it is unnecessary to create a through hole at the second drive shaft 183 to achieve the connection between the flow guide cavity 184 and the flow guide channel 122. Further, see... Figure 6cBecause the first drive shaft 181 is provided with the second flow channel 185, the contact area between the first drive shaft 181 and the second drive shaft 183 when rotating can be reduced, thereby making the first drive shaft 181 easier to rotate.

[0061] Furthermore, see Figure 4a and Figure 4b , or see Figures 6a to 6c The second drive member 14 and the first drive member 16 have a connection point between the first drive shaft 181 and the second drive shaft 183. The oral cleaning device 10 also includes a sealing structure 11, which is disposed at and seals the connection point. The sleeve structure of the first drive shaft 181 and the second drive shaft 183 means that there will be at least one connection point between them; and because the guide cavity 184 is disposed inside the first drive shaft 181 or between the first drive shaft 181 and the second drive shaft 183, liquid backflow may occur and seep out at the connection point of the first drive shaft 181 and the second drive shaft 183. Therefore, by providing the sealing structure 11, liquid can be prevented from seeping from the connection point to other locations of the main housing 15. Furthermore, since the first drive shaft 181 and the second drive shaft 183 need to transmit force, the sealing structure 11 located at the connection between the first drive shaft 181 and the second drive shaft 183 can further reinforce the second drive shaft 183 and the first drive shaft 181, thereby increasing the reliability of the first drive shaft 181 and the second drive shaft 183 during operation.

[0062] Specifically, the sealing structure 11 can be an integrally formed sealing structure, or a combination of a pipe-type structure and a sealing ring. For example... Figure 6b As shown, the sealing structure 11 may be provided with a groove facing the connection to buffer the accumulation of liquid.

[0063] Furthermore, see Figure 4a As shown, the flow channel 122 can communicate with the flow cavity 184 between the first driving member 16 and the hydrodynamic member 12. Alternatively, see... Figure 6a As shown, the flow channel 122 connects the flow cavity 184 between the second driving member 14 and the first driving member 16.

[0064] Furthermore, in this embodiment of the invention, the connection position between the flow guiding channel 122 and the flow guiding cavity 184 is not limited to the two positions mentioned above. For example, the connection position between the flow guiding channel 122 and the flow guiding cavity 184 is between the second driving member 14 and the transmission end 182.

[0065] exist Figure 4a In the oral cleaning device 10 shown, with the flow guide cavity 184 disposed within the first drive shaft 181, the flow guide channel 122 can connect the flow guide cavity 184 between the first drive member 16 and the hydrodynamic member 12. This structural design is simple and easy to assemble. Alternatively, in... Figure 6a In the oral cleaning device 10 shown, the flow guiding cavity 184 is disposed between the first drive shaft 181 and the second drive shaft 183. Therefore, the hydrodynamic component 12 is provided, for example, as shown in the figure. Figure 6b The guide tube 124 is shown, and the guide channel 122 is disposed within the guide tube 124, thereby connecting the guide channel 122 and the guide cavity 184 between the first drive member 16 and the second drive member 14. This avoids the need for an additional cavity to be created within the first drive member 16 to connect the guide cavity 184 and the guide channel 122 in order to achieve communication between the guide channel 122 and the guide cavity 184. Therefore, the first drive member 16 can function solely to generate rotational torque without requiring additional structures to accommodate other functions, thus simplifying the structural design of the first drive member 16 and reducing production costs.

[0066] like Figure 7 and Figure 8 As shown, the brush head 13 provided in this embodiment of the invention includes: a handle 134, a head 136, a first connector 138, a second connector 131, and a rotating member 133. The head 136 is connected to the handle 134. The first connector 138 is disposed within the handle 134 and is located on the side of the handle 134 away from the head 136. A first drive shaft 181 and a second drive shaft 183 pass through the first connector 138, and the second drive shaft 183 is connected to the first connector 138. The second connector 131 is disposed within the brush head 13 and is located on the side of the first connector 138 adjacent to the head 136, and the second connector 131 is connected to the first drive shaft 181. The second connector 131 has a fluid channel 132, which communicates with the guide cavity 184. The rotating member 133 is connected to the second connector 131, and the fluid channel 132 passes through the rotating member 133 and the second connector 131. The outlet 135 is located on the rotating member 133, and the outlet 135 is connected to the fluid channel 132.

[0067] The brush head 13, by providing the first connector 138 and the second connector 131, and the fluid channel 132 that passes through the rotating member 133 and the second connector 131, can cooperate with the components in the main housing 15 to enable the oral cleaning device 10 to perform rotational cleaning, vibration cleaning and water spraying cleaning functions.

[0068] Figure 9 Corresponding to Figure 2b The diagram shows a cross-sectional view of the first drive shaft 181 and the second drive shaft 183 located within the brush head 13. Figure 10 For corresponding to Figure 2c The diagram shows a cross-sectional view of the first drive shaft 181 and the second drive shaft 183 located within the brush head 13. The second connecting member 131 is, for example, a tubular structure. The rotating member 133 may include, for example, a brush section, a turntable 1332, and a guide section 1334. The turntable 1332 and the second connecting member 131 can transmit torque through helical gears, spiral bevel gears, or hypoid gears. The turntable 1332 drives the brush section to achieve a rotating cleaning function. The guide section 1334 may have a cavity communicating with the fluid channel 132, and the outlet 135 is opened in the guide section 1334, thereby realizing the outward discharge of fluids such as water or gas, thus achieving a water spray or air jet assisted cleaning function. The turntable 1332 may, for example, drive the flow guide 1334 to rotate together; the flow guide 1334 may also not be driven by the turntable 1332 and thus not rotate. The flow guide 1334 may be connected to other components or structures located in the head 136 by threads, snap-fit ​​structures, etc., thereby obtaining better sealing and preventing liquid from seeping out from the non-outlet 135 position of the flow guide 1334.

[0069] Furthermore, it is understood that the foregoing embodiments are merely illustrative examples of the present invention. Provided that the technical features do not conflict, are fixed and do not contradict the purpose of the present invention, the technical solutions of the various embodiments can be arbitrarily combined and used.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An oral cleaning device (10), characterized in that, include: First driving component (16); The first drive shaft (181) is connected to the first drive component (16). Second drive unit (14); The second drive shaft (183) is connected to the second drive member (14), and is sleeved on the first drive shaft (181), and the first drive shaft (181) is rotatably disposed relative to the second drive shaft (183); The first drive shaft (181) is provided with a flow guide cavity (184); or, a flow guide cavity (184) is formed between the first drive shaft (181) and the second drive shaft (183). The fluid dynamic component (12) has a flow channel (122), and the flow cavity (184) is connected to the flow channel (122). The brush head (13) has an outlet (135) on its surface; the brush head (13) is connected to the first drive shaft (181) and the second drive shaft (183), and the guide cavity (184) is connected to the outlet (135).

2. The oral cleaning device (10) according to claim 1, characterized in that, The second drive shaft (183) passes through the second drive member (14), and the first drive shaft (181) passes through the second drive member (14).

3. The oral cleaning device (10) according to claim 2, characterized in that, The first drive shaft (181) has a drive end (182), which extends through the second drive member (14) and the second drive shaft (183), and the brush head (13) is connected to the drive end (182).

4. The oral cleaning device (10) according to claim 1, characterized in that, The first drive shaft (181) has a drive end (182), and a first rotating connection structure (188) is formed on the drive end (182).

5. The oral cleaning device (10) according to claim 4, characterized in that, The brush head (13) includes a second connector (131), one end of which has a second rotating connection structure (137); the second rotating connection structure (137) cooperates with and connects to the first rotating connection structure (188).

6. The oral cleaning device (10) according to claim 5, characterized in that, The second connector (131) has a fluid channel (132), a guide cavity (184) is formed between the first drive shaft (181) and the second drive shaft (183), and a first flow channel (139) is formed on the second rotating connection structure (137). The fluid channel (132) is connected to the guide cavity (184) through the first flow channel (139).

7. The oral cleaning device (10) according to claim 1, characterized in that, The second drive member (14) is disposed on one side of the first drive member (16), and the hydrodynamic member (12) is disposed on the side of the first drive member (16) away from the second drive member (14).

8. The oral cleaning device (10) according to claim 7, characterized in that, The flow channel (122) connects the flow cavity (184) between the first driving member (16) and the fluid dynamic member (12); or, the flow channel (122) connects the flow cavity (184) between the second driving member (14) and the first driving member (16).

9. The oral cleaning device (10) according to claim 1, characterized in that, A flow guide cavity (184) is formed between the first drive shaft (181) and the second drive shaft (183). A second flow channel (185) is formed between the first drive shaft (181) and the second drive member (14) and the first drive member (16). The second drive shaft (183) is connected to the first drive shaft (181) at the second flow channel (185). The flow guide cavity (184) is connected to the flow guide channel (122) through the second flow channel (185).

10. The oral cleaning device (10) according to claim 2, characterized in that, There is a connection between the second drive member (14) and the first drive member (16) for the first drive shaft (181) and the second drive shaft (183); The oral cleaning device (10) further includes a sealing structure (11) which is disposed at and seals the connection.

11. The oral cleaning device (10) according to claim 1, characterized in that, The brush head (13) includes: Handle (134); Head (136), connected to the handle (134); The first connector (138) is disposed inside the handle (134) and is located on the side of the handle (134) away from the head (136). The first drive shaft (181) and the second drive shaft (183) pass through the first connector (138), and the second drive shaft (183) is connected to the first connector (138). The second connector (131) is disposed inside the brush head (13) and located on the side of the first connector (138) near the head (136). The second connector (131) is connected to the first drive shaft (181). The second connector (131) has a fluid channel (132) which is connected to the guide cavity (184). A rotating component (133) is connected to the second connecting component (131), and the fluid channel (132) passes through the rotating component (133) and the second connecting component (131). The outlet (135) is located on the rotating component (133) and the outlet (135) communicates with the fluid channel (132).

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