Oral care device and fluid pumping assembly for oral cleaning

Abstract

Provided are an oral care device and a fluid pumping component (300) for oral cleaning. The oral care device at least comprises a main housing (100), a housing component (200), the fluid pumping component (300), an electronic device (400), and a drive unit (500). The main housing (100) is provided with an outer wall and a main body chamber (110) surrounded and defined by the outer wall. The housing component (200) is arranged in the main body chamber (110) and divides the main body chamber (110) into at least a first space (111) and a second space (112) that are isolated and sealed from each other. The fluid pumping component (300) is assembled in the first space (111), and the fluid pumping component (300) is in communication with a fluid source (700) by means of a flow guide channel (600). The electronic device (400) and the drive unit (500) are assembled in the second space (112). The drive unit (500) drives the fluid pumping component (300) to operate, so as to draw fluid from the fluid source (700) by means of the flow guide channel (600) and output water flow impact. According to the oral care device, the possibility of wet fluid leakage causing damage to the electronic device (400) inside the oral care device can be reduced, thereby prolonging the service life of the oral care device.

Description

Oral care equipment and fluid pump assemblies for oral cleaning

[0001] Cross-references

[0002] This application claims priority to Chinese Patent Application No. 2024119602069, filed on December 25, 2024, entitled "Oral Care Device and Fluid Pump Assembly for Oral Hygiene". The entire contents of that Chinese patent application are incorporated herein by reference. Technical Field

[0003] This application relates to the field of oral care technology, and in particular to an oral care device and a fluid pump assembly for oral cleaning. Background Technology

[0004] Oral care devices with oral rinsing functions are usually equipped with a pump, which draws liquid from the tank and outputs a water flow to the user's mouth for oral cleaning.

[0005] However, during use, the pump body may leak moisture, increasing air humidity, or even leak liquid. These situations can cause corrosion and damage to electronic components such as batteries and circuit boards inside the oral care equipment. Summary of the Invention

[0006] The purpose of this application is to provide an oral care device and a fluid pump assembly for oral cleaning, which can reduce the possibility of damage to the electronic components inside the oral care device due to leakage of moist fluid, and improve the service life of the oral care device.

[0007] To achieve the above objectives, this application provides an oral care device, which includes at least:

[0008] The main shell has an outer wall and a main cavity formed by the outer wall;

[0009] A housing component is disposed within the main body cavity, and divides the main body cavity into at least a first space and a second space that are mutually isolated and sealed.

[0010] A fluid pumping component is assembled in the first space, and the fluid pumping component is connected to the fluid source through a flow guiding channel;

[0011] Electronic devices and a drive unit are assembled in the second space. The drive unit drives the fluid pumping component to operate, so as to draw fluid from the fluid source through the flow channel and output water flow impact.

[0012] The technical solution provided in this application divides the main chamber into a first space and a second space that are isolated and sealed from each other through a housing component. The fluid pumping component is placed in the first space, and the electronic components and drive unit are placed in the second space. This means that the fluid pumping component, which may leak moist fluid, and the electronic components and drive unit, which are susceptible to damage from moist fluid, are respectively installed in two isolated and sealed spaces, achieving dry and wet separation. In this way, even if the fluid pumping component leaks moist fluid, it prevents the moist fluid from entering the second space through the first space, thereby avoiding damage to the electronic components and drive unit and improving the service life of the oral care device.

[0013] Optionally, the housing component includes a partition that is coupled to the inner wall of the main housing to divide the main chamber into the first space and the second space.

[0014] Optionally, the housing component includes a partition and a first outer shell, the partition and the first outer shell forming the second space.

[0015] Optionally, the mating surfaces of the separator and the first housing member are provided with a first seal.

[0016] Optionally, one of the separator and the first housing is integrally formed with the first seal by secondary injection molding, and the other is interference-fitted with the first seal.

[0017] Optionally, the separator or the first housing member is provided with a first clearance hole, the output end of the drive unit extends through the first clearance hole to the first space, and a second seal is filled between the output end and the first clearance hole.

[0018] Optionally, the first housing component is provided with a button hole; the electronic device includes a PCB board, and the housing component further includes a button seal coupled to the PCB board, the button seal sealing the button hole.

[0019] Optionally, the outer surface of the separator and the first outer shell, when enclosed, together with the main shell, forms the first space.

[0020] Optionally, the housing component further includes a second outer housing component located within the first space; the second outer housing component is coupled to the partition to divide the first space into a third space and a fourth space, wherein the third space is formed by the partition and the second outer housing component, and the fluid pumping component is assembled in the third space.

[0021] Optionally, the fourth space is formed by the outer surface of the separator, the first outer shell, and the second outer shell being enclosed by the main shell, and the flow channel is at least partially located in the fourth space.

[0022] Optionally, the fourth space is disposed around the second space, and / or the fourth space is disposed around the third space.

[0023] Optionally, a third seal is provided at the mating surface of the separator and the second housing.

[0024] Optionally, the fluid pumping component includes an actuation unit and a transmission unit, wherein the actuation unit includes a pump body and a piston, the pump body has a first inlet and a first outlet, and the piston is slidably disposed within the pump body.

[0025] Optionally, the transmission unit includes a first gear, an eccentric gear, and a connecting rod; the first gear is connected to the output end of the drive unit and meshes with the gear portion of the eccentric gear; one end of the connecting rod is connected to the eccentric portion of the eccentric gear, and the other end of the connecting rod is connected to the piston, and the first gear, the eccentric portion of the eccentric gear, and the connecting rod are located on the same side of the gear portion of the eccentric gear.

[0026] Optionally, the main housing has a main extension line; the drive unit, the transmission unit and the execution unit are arranged along the main extension line, and the electronic devices and the fluid pumping components are arranged in a direction perpendicular to the main extension line.

[0027] Optionally, the housing component includes a partition and a second outer shell; the partition and the second outer shell together form the first space, and the outer surface of the partition and the second outer shell together, together with the main housing, forms the second space.

[0028] Optionally, the oral care device further includes a fluid guide connector and a nozzle head, wherein the first inlet of the fluid pumping component is connected to the fluid source through the flow channel, and the first outlet of the fluid pumping component is connected to the nozzle head through the fluid guide connector.

[0029] Optionally, the oral care device further includes a brush head and a motor, wherein the motor has a power output shaft, the motor drives the brush head to perform cleaning movements through the power output shaft, the power output shaft is a hollow shaft, and the first outlet of the fluid pumping component is connected to the transmission channel inside the brush head through the power output shaft.

[0030] Based on the same inventive concept, this application also provides a fluid pumping assembly for oral cleaning, the fluid pumping assembly including a separator, a first housing, a second housing, a fluid pumping component, electronic devices, and a drive unit, wherein the first housing and the second housing are respectively located on opposite sides of the separator, the first housing and the separator enclose a third space, the second housing and the separator enclose a first space, the fluid pumping component is assembled in the first space, and the electronic devices and the drive unit are assembled in the third space. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 is a half-sectional schematic diagram of an oral care device according to one embodiment of the present application;

[0033] Figure 2 is a half-sectional schematic diagram of the oral care device in another embodiment provided in this application;

[0034] Figure 3 is a half-sectional schematic diagram of the oral care device in another embodiment provided in this application;

[0035] Figure 4 is a half-sectional schematic diagram of the oral care device in another embodiment provided in this application;

[0036] Figure 5 is a half-sectional schematic diagram of the fluid pumping assembly in another embodiment provided in this application;

[0037] Figure 6 is an exploded view of a portion of the structure of the fluid pumping assembly in another embodiment provided in this application;

[0038] Figure 7 is a half-sectional view of Figure 6;

[0039] Figure 8 is an exploded schematic diagram of the fluid pumping assembly in another embodiment provided in this application;

[0040] Figure 9 is a half-sectional view of Figure 8;

[0041] Figure 10 is a half-section schematic diagram of another part of the fluid pumping assembly after an explosion, according to another embodiment provided in this application.

[0042] Explanation of reference numerals in the attached drawings: 100, Main housing; 110, Main chamber; 111, First space; 112, Second space; 113, Third space; 114, Fourth space; 200, Housing component; 210, Separator; 2141, Clearance hole; 220, First outer shell component; 221, Key hole; 230, Second outer shell component; 240, First seal; 250, Second seal; 260, Key seal; 300, Fluid pumping component; 310, Actuation unit; 311, Pump body; 3111, First inlet; 3112, First outlet; 312, Piston; 320, Transmission unit; 321, First gear; 322, End face eccentric gear; 323, Connecting rod; 400, Electronic component; 410, PCB board; 420, Battery; 500, Drive unit; 600, Flow channel; 610, Liquid guide connector; 700, fluid source; 800, nozzle head; a, main extension line. Detailed Implementation

[0043] Currently, oral care devices on the market primarily employ three design approaches to achieve oral rinsing functionality. The first is a combination design of the water flosser and a water supply station, where the water supply station has a built-in pump responsible for delivering water flow to the water flosser to generate a water jet. The second design integrates the water flosser itself with a pump, allowing the device to provide water jet independently without an additional water supply station. The third is a combined rinsing and brushing device, which integrates both rinsing and brushing functions, and also incorporates a pump to provide the necessary water jet. These designs each have their own characteristics, meeting the needs of different users and usage scenarios, but all require a pump to provide the water jet.

[0044] However, commonly used water pumps, such as piston pumps, plunger pumps, and diaphragm pumps, primarily draw liquid through a stroke and compress it into the output pipe. This process can lead to water vapor leakage. Taking piston pumps as an example, this application's in-depth research reveals that the pump body has a cylinder liner. The piston reciprocates within the cylinder liner to draw in and discharge liquid. During this process, liquid adheres to the inner wall of the cylinder liner, evaporates, and forms water vapor that enters the transmission chamber. This vapor then escapes from the transmission chamber towards the motor and outwards, causing damage to the motor and corrosion and damage to electronic components such as batteries and circuit boards within the oral care device. Furthermore, with prolonged piston operation, the seal between the piston and the cylinder liner may also break or deform, leading to liquid leakage, which similarly damages the motor and causes corrosion and damage to electronic components such as batteries and circuit boards within the oral care device.

[0045] This application attempted to install two sealing rings on the piston to improve the sealing performance between the piston and the cylinder liner inner wall by increasing the number of sealing rings, thus preventing water leakage. However, this solution also correspondingly increases the friction between the piston and the cylinder liner, requiring more power to drive the piston, and still cannot prevent liquid from sticking to the cylinder liner inner wall and evaporating and leaking.

[0046] This application also attempts to install an accordion-shaped sealing sleeve between the outer wall of the cylinder liner or the outer wall of the pump body and the connecting rod that drives the piston. This sealing sleeve isolates the liquid adhering to the inner wall of the cylinder liner from the outside, preventing the liquid from evaporating and spreading outwards. While this solution can prevent liquid and moisture leakage, the sealing sleeve is prone to damage and aging because it needs to move with the connecting rod, resulting in a short service life. Furthermore, even after damage and aging, leakage can still occur, potentially damaging electronic components.

[0047] Therefore, this application ultimately divides the main body chamber formed by the main housing of the oral care device into an isolated and sealed first space and a second space, and places the fluid pumping component that generates humid fluid in the first space, and places the drive unit and electronic components that are susceptible to damage from humid fluid in the second space, thereby achieving dry and wet separation, reducing the possibility of damage to the electronic components inside the oral care device due to leakage of humid fluid, and improving the service life of the oral care device.

[0048] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0049] Referring to Figures 1 to 5, in one feasible embodiment, the oral care device may include at least a main housing 100, a housing component 200, a fluid pumping component 300, electronic devices 400, and a drive unit 500. The main housing 100 serves as the load-bearing component of the oral care device, primarily supporting and protecting the remaining components. Specifically, the main housing 100 has an outer wall and a main chamber 110 formed by the outer wall. The housing component 200 is disposed within the main chamber 110, dividing the main chamber 110 into at least two mutually isolated and sealed spaces: a first space 111 and a second space 112. The fluid pumping component 300 is assembled within the first space 111 and is connected to a fluid source 700 via a flow channel 600. Electronic device 400 and drive unit 500 are assembled in the second space 112. Drive unit 500 drives fluid pumping component 300 to operate, thereby drawing fluid from fluid source 700 through flow channel 600 and outputting water flow impact.

[0050] In other words, this application installs the fluid pumping component 300, which may leak humid fluid, and the electronic device 400 and drive unit 500, which are susceptible to damage from humid fluid, in two mutually isolated and sealed spaces. In this way, even if the fluid pumping component 300 leaks humid fluid, the humid fluid is prevented from entering the second space 112 through the first space 111, thereby preventing damage to the electronic device 400 and drive unit 500.

[0051] In practical applications, the main housing 100 can be assembled from an upper cover and a housing, or from an upper cover, a lower cover, and a housing, etc. This application does not specifically limit this. Each joint of the main housing 100 should be provided with a waterproof structure to prevent external moisture from entering the main body chamber 110 and damaging the electronic devices 400 and drive unit 500 inside the main body chamber 110.

[0052] The fluid pumping component 300 can be a diaphragm pump, a plunger pump, or a piston pump, etc., and the drive unit 500 can be a cylinder or a motor, etc. However, considering that the motor has high controllability and the electrical control structure is simple and easy to implement, this application prefers the drive unit 500 to be a motor.

[0053] Electronic device 400 may be one or more of PCB board 410, battery 420, button assembly, etc.

[0054] The fluid source 700 can be integrated into the oral care device. It can be connected to the main housing 100 to form a structure similar to an integrated water flosser. Accordingly, a waterproof structure should be provided between the fluid source 700 and the main housing 100 to prevent liquid from the fluid source 700 from leaking directly into the main chamber 110. Alternatively, the fluid source 700 can be separated from the main housing 100 and connected via a flexible hose. In this case, the fluid source can be an external water tank or other water supply component. Of course, the fluid source 700 can also be independent of the oral care device and can be a faucet or other water supply component.

[0055] Considering the possibility of leakage at the connection between the flow channel 600 and the fluid pumping component 300, and the potential for moisture in the external environment to condense into water droplets and form a damp fluid on the outer wall of the flow channel 600 when the main chamber 110 is poorly sealed, at least a portion of the flow channel 600 can be placed within the first space 111. This also avoids the possibility of leakage from the flow channel 600 damaging the drive unit 500 and electronic components 400 inside the oral care device, thereby extending the service life of the oral care device.

[0056] Regarding the specific manner in which the housing component 200 divides the main chamber 110 into a first space 111 and a second space 112, this application provides three feasible embodiments for reference.

[0057] Example 1: As shown in Figure 1, the housing component 200 may include a partition 210, which is coupled to the inner wall of the main housing 100, thereby dividing the main chamber 110 into a first space 111 and a second space 112.

[0058] Example 2: As shown in Figure 2, the housing component 200 may include a partition 210 and a second outer shell component 230, wherein the partition 210 and the second outer shell component 230 together form a first space 111, and the outer surface of the partition 210 and the second outer shell component 230 together with the main housing 100 forms a second space 112.

[0059] The partition 210 or the second outer shell 230 can also be coupled to the inner wall of the main shell 100, thereby further dividing the second space 112 into multiple spaces. Alternatively, a second partition is also provided in the main cavity 110, and the second partition is coupled to the inner wall of the main cavity 110, thereby further dividing the second space 112 into multiple spaces.

[0060] Example 3: As shown in Figure 3, the housing component 200 includes a partition 210 and a first outer shell component 220. The partition 210 and the first outer shell component 220 together form a second space 112. The outer surface of the partition 210 and the first outer shell component 220 together, together with the main housing 100, forms a first space 111.

[0061] Understandably, this method not only prevents the leakage of wet fluid from the fluid pumping component 300 from damaging the electronic device 400 and the drive unit 500, but also prevents the leakage of wet fluid from damaging the electronic device 400 and the drive unit 500 even if external water leaks through the main housing 100 into the main body chamber 110.

[0062] As shown in Figures 6 to 8, in one feasible embodiment, a first sealing member 240 is provided on the mating surface of the separator 210 and the first housing 220. The first sealing member 240 seals the mating gap between the separator 210 and the first housing 220, thereby preventing the humid fluid leaking from the fluid pumping component 300 from entering the second space 112 through the mating gap between the separator 210 and the first housing 220 and damaging the electronic device 400 and the drive unit 500.

[0063] In practical applications, the partition 210 and the first outer shell 220 can be provided with snap-fit ​​structures around them, allowing them to be interlocked and spliced ​​together as a single unit; and / or, the partition 210 and the first outer shell 220 can be spliced ​​together by screws. The mating surfaces of the partition 210 and / or the first outer shell 220 can be provided with mounting grooves, and the first seal 240 can be pre-installed in these grooves, so that when the partition 210 and the first outer shell 220 are spliced ​​together, the first seal 240 fills the gap between them. Alternatively, one of the partition 210 and the first outer shell 220 can be integrally formed with the first seal 240 through secondary injection molding, while the other is interference-fitted to the first seal 240.

[0064] In an optional embodiment, the separator 210 or the first housing 220 may be provided with a sealed transmission mechanism. This transmission mechanism forms part of the separator 210 or the first housing 220 and participates in the isolation and sealing of the first space 111 and the second space 112. Simultaneously, the transmission mechanism has two ends capable of transmitting power, one end located within the second space 112 and connected to the output end of the drive unit 500, and the other end located within the first space 111 and connected to the fluid pumping component 300. The drive unit 500 can drive the fluid pumping component 300 to operate via the transmission mechanism. This prevents humid fluid in the first space 111 from leaking into the second space 112 through the transmission gap between the drive unit 500 and the fluid pumping component 300.

[0065] As shown in Figures 8 and 9, in another optional embodiment, the separator 210 or the first housing 220 is provided with a first clearance hole 2141. The output end of the drive unit 500 extends through the first clearance hole 2141 into the first space 111, and a second seal 250 is filled between the output end and the first clearance hole 2141. This prevents humid fluid in the first space 111 from leaking into the second space 112 through the gap between the output end of the drive unit 500 and the first clearance hole 2141.

[0066] In practical applications, the second seal 250 can be a sealing ring. The outer periphery of the sealing ring is fixed to the inner wall surface of the first clearance hole 2141, and the inner side of the second seal 250 is sleeved on the output end and contacts the output end.

[0067] Considering that control buttons also need to be installed on the main housing 100 of the oral care device, and that these control buttons need to be pressed to contact the buttons on the PCB board 410 in the second space 112, a button hole 221 also needs to be provided on the first housing component 220. Correspondingly, the housing component 200 may also include a button seal 260, which is coupled to the PCB board 410 and seals the button hole 221, thereby preventing humid fluid in the first space 111 from leaking into the second space 112 through the button hole 221.

[0068] As shown in Figures 4 and 5, based on the above-described embodiment 3, the housing component 200 may further include a second outer shell component 230. The second outer shell component 230 is located within the first space 111 and is coupled to the partition 210. The second outer shell component 230 divides the first space 111 into a third space 113 and a fourth space 114.

[0069] The third space 113 is formed by the partition 210 and the second housing 230, and the fluid pumping component 300 is assembled within the third space 113. The fourth space 114 can be formed by the outer surface of the partition 210, the first housing 220, and the second housing 230 enclosing the main housing 100, and the flow channel 600 is at least partially located within the fourth space 114. In this way, the partition 210, the first housing 220, and the second housing 230 can integrate the fluid pumping component 300, the electronic device 400, and the drive unit 500 into a single unit, which can be installed integrally into or removed from the main body chamber 110, facilitating disassembly and assembly operations.

[0070] In this embodiment, from the perspective of the vertical cross-section of the oral care device, the fourth space 114 may be arranged around the second space 112, and / or the fourth space 114 may be arranged around the third space 113. The shell component 200, composed of the partition 210, the first outer shell component 220, and the second outer shell component 230, forms a visual effect similar to suspension within the main body chamber 110. Furthermore, this arrangement facilitates communication between the flow channel 600 and the fluid source 700 located below, making it convenient to arrange the flow channel 600.

[0071] In practical applications, snap-fit ​​structures may be provided around the partition 210 and the second housing 230, and the partition 210 and the second housing 230 may be snapped together to form a whole through the snap-fit ​​structures; and / or, the partition 210 and the second housing 230 may be snapped together to form a whole through screws.

[0072] In one feasible embodiment, a third seal (not shown) is provided at the mating surface of the partition 210 and the second housing 230. The third seal seals the sealing gap between the partition 210 and the second housing 230, thereby confining the wet fluid leaking from the fluid pumping component 300 within the third space 113. This prevents the wet fluid leaking from the fluid pumping component 300 from leaking from the third space 113 into the fourth space 114, thereby leaking to the outside of the main housing 100 or entering the second space 112.

[0073] Alternatively, the separator 210 and the second housing 230 together constitute the housing structure of the fluid pumping component 300. The fluid pumping component 300 achieves isolation and sealing using the separator 210 and the second housing 230, preventing fluid leakage from the fluid pumping component 300. In this way, the high strength and durability of the separator 210 and the second housing 230, as well as their lack of need to move with the transmission unit 320 within the fluid pumping component 300, reduce the risk of fatigue damage, thereby ensuring the reliability and lifespan of the seal on the fluid pumping component 300.

[0074] In practical applications, the mating surfaces of the separator 210 and / or the second housing 230 may be provided with mounting grooves. The third seal can be pre-installed in these mounting grooves, so that when the separator 210 and the second housing 230 are joined together, the third seal fills the joint gap between the separator 210 and the second housing 230. Alternatively, one of the separator 210 and the second housing 230 may be integrally formed with the third seal through secondary injection molding, while the other is interference-fitted to the third seal.

[0075] Regarding the specific structure of the fluid pumping component 300, as shown in Figures 4, 5, and 8 to 10, in one feasible embodiment, the fluid pumping component 300 may include an execution unit 310 and a transmission unit 320. The drive unit 500 drives the execution unit 310 to move through the transmission unit 320 to draw fluid from the fluid source 700 and discharge the fluid. The execution unit 310 may adopt different structures depending on the specific form of the fluid pumping component 300. For example, when the fluid pumping component 300 is a diaphragm pump, the execution unit 310 may be a diaphragm structure; when the fluid pumping component 300 is a piston pump, the execution unit 310 may be a piston structure.

[0076] Taking the execution unit 310 as a piston structure as an example, the execution unit 310 may include a pump body 311 and a piston 312. The pump body 311 has a first inlet 3111 and a first outlet 3112. The piston 312 is slidably disposed in the pump body 311, so that the reciprocating motion of the piston 312 in the pump body 311 can be used to draw fluid from the first inlet 3111 and discharge it from the first outlet 3112.

[0077] In practical applications, the pump body 311 can be made of metals such as copper or alloys, or other high-strength materials. The separator 210 and the second outer casing 230 can be injection molded. The pump body 311 can also be composed of two parts. Specifically, the pump body 311 includes a pump housing and a cylinder liner. The cylinder liner is located inside the pump housing, and the piston 312 slides inside the cylinder liner. In this case, only the wear resistance of the cylinder liner needs to be improved to meet the usage requirements, thereby further reducing processing requirements and production costs.

[0078] Regarding the specific structure of the transmission unit 320, in one feasible embodiment, the transmission unit 320 may include a first gear 321, an end-face eccentric gear 322, and a connecting rod 323. The end-face eccentric gear 322 is rotatably connected to the separator 210 and / or the second housing 230. The first gear 321 is connected to the output end of the drive unit 500 and meshes with the gear portion of the end-face eccentric gear 322. The eccentric portion of the end-face eccentric gear 322 is connected to one end of the connecting rod 323, and the other end of the connecting rod 323 is connected to the execution unit 310. When the execution unit 310 is a piston structure, the other end of the connecting rod 323 is connected to the piston 312. When the drive unit 500 drives the first gear 321 to rotate, the first gear 321 can drive the eccentric portion of the end-face eccentric gear 322 to perform eccentric motion, and the connecting rod 323 converts the eccentric motion into linear motion, thereby driving the piston 312 to perform linear reciprocating motion.

[0079] The eccentric portion of the aforementioned end-face eccentric gear 322 and the connecting rod 323 and the first gear 321 can be located on opposite sides of the gear portion of the end-face eccentric gear 322.

[0080] The eccentric portion of the first gear 321, the end face eccentric gear 322, and the connecting rod 323 can also be located on the same side of the gear portion of the end face eccentric gear 322. The first gear 321, the eccentric portion of the end face eccentric gear 322, and the connecting rod 323 share the same thickness space, thereby reducing the overall thickness of the fluid pumping component 300 and making the main housing 100 thinner, so as to facilitate user grip and operation.

[0081] As shown in Figure 4, in one feasible embodiment, the main housing 100 has a main extension line a, and the drive unit 500, transmission unit 320, and execution unit 310 are arranged along the main extension line a. This allows the main extension direction of the fluid pumping component 300 to be aligned with the main extension direction of the main housing 100, making full use of the shape of the main housing 100 to arrange the fluid pumping component 300, avoiding the need for an excessively large main housing 100 that would affect the user's grip. Simultaneously, this arrangement design also allows sufficient space between the main housing 100 and the side of the fluid pumping component 300 for accommodating the electronic device 400. That is, the electronic device 400 and the fluid pumping component 300 are arranged perpendicular to the main extension line a, thereby shortening the overall length of the oral care device and making it easier to carry.

[0082] In one feasible embodiment, the piston 312 may be connected with a piston seal ring, which is used to prevent the leakage of moist fluid in the pump body 311 through the gap between the piston 312 and the cylinder liner. An O-ring is fitted on the cylinder liner, which is used to prevent the leakage of moist fluid in the pump body 311 through the gap between the cylinder liner and the separator 210 and the second outer shell 230 to the integral inner wall surface, further reducing the possibility of liquid leakage.

[0083] Furthermore, it is understood that the sealing arrangement of the piston seal and O-ring can further divide the third space 113 into an isolated and sealed execution chamber and a transmission chamber, with the transmission unit 320 located in the transmission chamber and the execution unit 310 located in the execution chamber. To further reduce the hazards caused by leakage of moist fluid, the separator 210 and / or the second housing 230 may be provided with a communication hole communicating with the transmission chamber, and the communication hole is connected to the external environment through a guide pipe. In this way, when moist fluid in the execution chamber leaks into the transmission chamber, the moist fluid can flow to the external environment through the guide pipe, thereby preventing the moist fluid from remaining in the transmission chamber for a long time and damaging the corresponding sealing structure, and thus preventing the possibility of moist fluid leaking out of the third space 113.

[0084] The oral care device of this application can be a water flosser or a water flosser / brush combo. Taking a water flosser / brush combo as an example, the oral care device may also include a brush head and a motor. The brush head has a transmission channel and connecting ports and spray nozzles located at both ends of the transmission channel. The brush head may be provided with bristles, which are located at the end of the brush head with the spray nozzle. The motor has a power output shaft, which is connected to the brush head to drive the brush head to perform cleaning movements. Furthermore, the power output shaft is constructed as a hollow shaft, and the first outlet 3112 of the fluid pumping component 300 is connected to the transmission channel inside the brush head through the power output shaft, so that the fluid pumped by the fluid pumping component 300 can pass through the power output shaft and the transmission channel in sequence, and finally output water jet impact from the spray nozzle.

[0085] Taking a water flosser as an example of an oral care device, the oral care device also includes a liquid guide connector 610 and a nozzle head 800. The first inlet 3111 of the fluid pumping component 300 is connected to the fluid source 700 through the flow guide channel 600, and the first outlet 3112 of the fluid pumping component 300 is connected to the nozzle head 800 through the liquid guide connector 610.

[0086] Based on the same inventive concept, this application also provides a fluid pumping assembly for oral cleaning. The fluid pumping assembly includes a separator 210, a first housing 220, a second housing 230, a fluid pumping component 300, an electronic device 400, and a drive unit 500. The first housing 220 and the second housing 230 are located on opposite sides of the separator 210. The first housing 220 and the separator 210 enclose a third space 113, and the second housing 230 and the separator 210 enclose a first space 111. The fluid pumping component 300 is assembled in the first space 111, and the electronic device 400 and the drive unit 500 are assembled in the third space 113.

[0087] The specific structures of the separator 210, the first outer casing 220, the second outer casing 230, and the fluid pumping component 300 can be found in the detailed descriptions in the above embodiments, and will not be repeated here.

[0088] The terms "upper" and "lower" are used to describe the relative positions of the various structures in the accompanying drawings. They are only for clarity of description and are not intended to limit the scope of implementation of this application. Any changes or adjustments to the relative positions without substantially altering the technical content shall also be considered within the scope of implementation of this application.

[0089] It should be noted that, in this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0090] Furthermore, in this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0091] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0092] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application 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 or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An oral care device, characterized in that, The oral care equipment includes at least: The main housing (100) has an outer wall and a main cavity (110) formed by the outer wall; The housing component (200) is disposed within the main body chamber (110) and divides the main body chamber (110) into at least a first space (111) and a second space (112) that are isolated and sealed from each other; A fluid pumping component (300) is assembled in the first space (111), and the fluid pumping component (300) is connected to a fluid source (700) through a flow guide channel (600); Electronic devices (400) and a drive unit (500) are assembled in the second space (112). The drive unit (500) drives the fluid pumping component (300) to operate, so as to draw fluid from the fluid source (700) through the flow channel (600) and output water flow impact.

2. The oral care device according to claim 1, characterized in that, The housing component (200) includes a partition (210) that is coupled to the inner wall of the main housing (100) to divide the main chamber (110) into a first space (111) and a second space (112).

3. The oral care device according to claim 1, characterized in that, The housing component (200) includes a partition (210) and a first outer shell component (220), wherein the partition (210) and the first outer shell component (220) together form the second space (112).

4. The oral care device according to claim 3, characterized in that, The joint surface of the separator (210) and the first housing (220) is provided with a first seal (240).

5. The oral care device according to claim 4, characterized in that, One of the separator (210) and the first housing (220) is integrally formed with the first seal (240) by secondary injection molding, and the other is interference-fitted with the first seal (240).

6. The oral care device according to claim 3, characterized in that, The separator (210) or the first housing (220) is provided with a first clearance hole (2141), the output end of the drive unit (500) extends through the first clearance hole (2141) to the first space (111), and a second seal (250) is filled between the output end and the first clearance hole (2141).

7. The oral care device according to claim 3, characterized in that, The first housing component (220) is provided with a button hole (221); The electronic device (400) includes a PCB board (410), and the housing component (200) further includes a key seal (260) coupled to the PCB board (410), the key seal (260) sealing the key hole (221).

8. The oral care device according to any one of claims 3 to 7, characterized in that, The outer surface of the partition (210) and the first outer shell (220) together encloses the main shell (100) to form the first space (111).

9. The oral care device according to claim 8, characterized in that, The housing component (200) further includes a second housing component (230) located within the first space (111); The second housing (230) is coupled to the partition (210) to divide the first space (111) into a third space (113) and a fourth space (114), wherein the third space (113) is formed by the partition (210) and the second housing (230), and the fluid pumping component (300) is assembled in the third space (113).

10. The oral care device according to claim 9, characterized in that, The fourth space (114) is formed by the outer surface of the partition (210), the first outer shell (220) and the second outer shell (230) being enclosed by the main shell (100), and the flow channel (600) is at least partially located in the fourth space (114).

11. The oral care device according to claim 9, characterized in that, The fourth space (114) is arranged around the second space (112), and / or the fourth space (114) is arranged around the third space (113).

12. The oral care device according to claim 9, characterized in that, A third seal is provided at the joint surface of the separator (210) and the second housing (230).

13. The oral care device according to any one of claims 1 to 7, characterized in that, The fluid pumping component (300) includes an actuation unit (310) and a transmission unit (320), wherein, The execution unit (310) includes a pump body (311) and a piston (312). The pump body (311) has a first inlet (3111) and a first outlet (3112). The piston (312) is slidably disposed within the pump body (311).

14. The oral care device according to claim 13, characterized in that, The transmission unit (320) includes a first gear (321), an end-face eccentric gear (322), and a connecting rod (323); The first gear (321) is connected to the output end of the drive unit (500) and meshes with the gear portion of the end face eccentric gear (322); One end of the connecting rod (323) is connected to the eccentric portion of the end face eccentric gear (322), and the other end of the connecting rod (323) is connected to the piston (312). The first gear (321), the eccentric portion of the end face eccentric gear (322), and the connecting rod (323) are located on the same side of the gear portion of the end face eccentric gear (322).

15. The oral care device according to claim 13, characterized in that, The main housing (100) has a main extension line (a); The drive unit (500), the transmission unit (320), and the execution unit (310) are arranged along the main extension line (a), and the electronic device (400) and the fluid pumping component (300) are arranged in a direction perpendicular to the main extension line (a).

16. The oral care device according to claim 1, characterized in that, The housing component (200) includes a partition (210) and a second outer housing component (230); The partition (210) and the second outer shell (230) together form the first space (111), and the outer surface of the partition (210) and the second outer shell (230) together together form the second space (112) with the main shell (100).

17. The oral care device according to any one of claims 1 to 7, characterized in that, The oral care device also includes a fluid guide connector (610) and a nozzle head (800), wherein, The first inlet (3111) of the fluid pumping component (300) is connected to the fluid source (700) through the flow guide channel (600), and the first outlet (3112) of the fluid pumping component (300) is connected to the nozzle head (800) through the liquid guide connector (610).

18. The oral care device according to any one of claims 1 to 7, characterized in that, The oral care device also includes a brush head and a motor, wherein... The motor has a power output shaft, which drives the brush head to perform cleaning motion. The power output shaft is a hollow shaft, and the first outlet (3112) of the fluid pumping component (300) is connected to the transmission channel inside the brush head through the power output shaft.

19. A fluid pumping assembly for oral hygiene, characterized in that, The fluid pumping assembly includes a separator (210), a first housing (220), a second housing (230), a fluid pumping component (300), electronic devices (400), and a drive unit (500), wherein, The first housing (220) and the second housing (230) are located on opposite sides of the partition (210). The first housing (220) and the partition (210) enclose a third space (113), and the second housing (230) and the partition (210) enclose a first space (111). The fluid pumping component (300) is assembled in the first space (111), and the electronic device (400) and the drive unit (500) are assembled in the third space (113).

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