Fluid pumping assembly for oral cleaning and oral care device

Abstract

The utility model discloses a fluid pumping assembly for oral cleaning and oral care equipment. The fluid pumping assembly at least comprises a shell component, an execution unit, a transmission unit and a driving unit. Wherein the shell component is provided with an execution cavity, a transmission cavity, a driving cavity, a liquid inlet and a liquid outlet, the liquid inlet and the liquid outlet are communicated with the execution cavity, the transmission cavity is isolated and sealed from the exterior of the shell component, and the transmission cavity is isolated and sealed from the driving cavity; the execution unit is arranged in the execution cavity; the transmission unit is arranged in the transmission cavity, and the transmission unit partially extends into the execution cavity and is connected with the execution unit; the driving unit is arranged in the driving cavity, the output end of the driving unit extends into the transmission cavity and is connected with the transmission unit, and the driving unit drives the execution unit to move in the execution cavity through the transmission unit. According to the technical scheme provided by the invention, the possibility of leakage of wet fluid can be reduced, electronic components in the oral care equipment are prevented from being damaged, and the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of oral care, in particular to a fluid pumping assembly for oral cleaning and an oral care device. BACKGROUND

[0002] The oral care device with oral irrigation function is usually provided with a pump body, and liquid is pumped from a water tank by the pump body to output water flow to impact the user's oral cavity for oral cleaning.

[0003] However, the pump body may leak water vapor during use, increasing air humidity, and even liquid leakage may occur, which may cause rust and damage to electronic devices such as batteries and circuit boards inside the oral care device. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the present application is to provide a fluid pumping assembly for oral cleaning and an oral care device, which can reduce the possibility of damage to electronic devices inside the oral care device caused by leakage of humid fluid, and improve the service life.

[0005] To achieve the above-mentioned purpose, the present application provides a fluid pumping assembly for oral cleaning, which at least comprises a housing component, an execution unit, a transmission unit and a driving unit. The housing component has an execution cavity, a transmission cavity, a driving cavity, and a liquid inlet and a liquid outlet communicating with the execution cavity, the transmission cavity is isolated and sealed from the outside of the housing component, and the transmission cavity is isolated and sealed from the driving cavity; the execution unit is arranged in the execution cavity; the transmission unit is arranged in the transmission cavity, and part of the transmission unit extends into the execution cavity and is connected with the execution unit; the driving unit is arranged in the driving cavity, the output end of the driving unit extends into the transmission cavity and is connected with the transmission unit, and the driving unit drives the execution unit to move in the execution cavity through the transmission unit, so as to pump liquid into the execution cavity through the liquid inlet, and provide water flow impact through the liquid outlet.

[0006] The technical scheme provided by the present application shows that the most common way of humid fluid leakage of the fluid pumping assembly is that when the execution unit moves in the execution cavity, liquid will adhere to the inner wall of the execution cavity, and then evaporate into water vapor and diffuse into the transmission cavity, forming humid fluid leakage. That is to say, the transmission cavity is the first area through which the most common humid fluid leakage occurs. Therefore, by surrounding the transmission cavity with the housing component and isolating and sealing the transmission cavity from the outside of the housing component, the leaked humid fluid can be limited in the sealed transmission cavity, thereby avoiding further spread to other areas and causing damage.

[0007] And the sealed transmission cavity is formed by the housing component, on one hand, the housing component itself has higher hardness requirement and is not easy to be damaged, on the other hand, the housing component does not need to move with the transmission unit and is not easy to be damaged by fatigue, thereby ensuring the reliability and sealing life of the transmission cavity.

[0008] Optionally, the housing component comprises a first housing piece, a second housing piece and a pump body, wherein the first housing piece and the second housing piece are coupled and jointly surround the transmission cavity and the drive cavity; the pump body is connected to one end of the first housing piece and the second housing piece formed as a whole, and the execution cavity is located in the pump body, and the liquid inlet and the liquid outlet are arranged on the pump body.

[0009] Optionally, the joint surface of the first housing piece and / or the second housing piece is provided with a first sealing piece, and the first sealing piece is arranged at least around the transmission cavity; and / or the first housing piece or the second housing piece is provided with a first accommodation hole, the output end of the drive unit extends into the transmission cavity through the first accommodation hole, and the output end of the drive unit and the first accommodation hole are filled with a second sealing piece.

[0010] Optionally, the joint surface of the first housing piece and / or the second housing piece is provided with a third sealing piece, and the third sealing piece is arranged around the drive cavity.

[0011] Optionally, the first sealing piece and the third sealing piece are integrally formed.

[0012] Optionally, one of the first housing piece and the second housing piece is integrally formed with the first sealing piece by means of secondary injection molding, and the other is in interference fit with the first sealing piece.

[0013] Optionally, the first housing piece or the second housing piece is provided with a wire harness connecting hole in communication with the drive cavity, and the wire harness connecting hole is filled with sealing glue.

[0014] Optionally, the first accommodation hole and the wire harness connecting hole are both arranged on the first housing piece.

[0015] Optionally, the execution unit comprises a cylinder sleeve, a piston and a fourth sealing piece; the cylinder sleeve is inserted into the execution cavity, and the cylinder sleeve extends from the execution cavity to the transmission unit by a preset distance; the piston is slidingly connected to the inside of the cylinder sleeve, the piston is connected with a piston sealing piece, and the piston sealing piece is in sealing cooperation with the inner wall surface of the cylinder sleeve; the fourth sealing piece is sleeved on the outer wall surface of the cylinder sleeve and located outside the execution cavity, and the fourth sealing piece is in sealing cooperation with the inner wall surfaces of the first housing piece and the second housing piece.

[0016] Optionally, the transmission unit comprises a first gear, an end face eccentric gear and a connecting rod; the first gear and the end face eccentric gear are arranged in the transmission cavity, the first gear is connected with the output end of the driving unit and meshes with the gear part of the end face eccentric gear; the eccentric part of the end face eccentric gear is connected with one end of the connecting rod, the other end of the connecting rod is connected with the execution unit, and the first gear, the eccentric part of the end face eccentric gear and the connecting rod are located on the same side of the gear part of the end face eccentric gear.

[0017] Optionally, the driving unit, the transmission unit and the execution unit are arranged along the output end axis of the driving unit.

[0018] To achieve the above-mentioned purpose, another aspect of the present application also provides an oral care device, comprising a holding shell and the fluid pumping assembly as claimed in the above claims, wherein the holding shell has an outer wall and a containing cavity surrounded by the outer wall, and the containing cavity is used for containing electronic devices and the fluid pumping assembly.

[0019] Through the above-mentioned scheme, when the fluid pumping assembly is applied to an oral cleaning device, damage of electronic components inside the oral care device caused by leakage of wet fluid can be avoided, and the service life of the oral care device is improved.

[0020] Optionally, the oral care device further comprises a brush head and a motor; the motor has a power output shaft, the motor drives the brush head to perform a cleaning movement through the power output shaft, the power output shaft is a hollow shaft, and the liquid outlet is in communication with a transmission flow channel in the brush head through the power output shaft.

[0021] Optionally, the holding shell has a main extension line; the output end axis of the driving unit is substantially parallel to the main extension line, and the electronic devices and the fluid pumping assembly are arranged along a direction perpendicular to the main extension line. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0023] Figure 1 is a half-section schematic view of a fluid pumping assembly in an embodiment provided by the present application;

[0024] Figure 2 is a three-dimensional schematic view of a fluid pumping assembly in an embodiment provided by the present application;

[0025] Figure 3 is an exploded schematic view of a fluid pumping assembly according to an embodiment provided herein;

[0026] Figure 4 is a partial structural exploded schematic view of a fluid pumping assembly according to an embodiment provided herein;

[0027] Figure 5 is a perspective schematic view of a first housing member according to an embodiment provided herein;

[0028] Figure 6 is another partial structural exploded schematic view of a fluid pumping assembly according to an embodiment provided herein;

[0029] Figure 7 is a half-section schematic view of an oral care device according to an embodiment provided herein.

[0030] BRIEF DESCRIPTION OF DRAWINGS

[0031] 1000, fluid pumping assembly; 2000, holding housing; 2100, containing chamber; 2200, electronic device;

[0032] 100, housing component; 110, execution cavity; 111, liquid inlet; 112, liquid outlet; 120, transmission cavity; 130, driving cavity; 140, first housing member; 141, first accommodating hole; 142, wire harness connecting hole; 143, second accommodating hole; 150, second housing member; 160, pump main body; 170, first sealing member; 180, second sealing member; 190, third sealing member;

[0033] 200, execution unit; 210, cylinder sleeve; 220, piston; 221, piston sealing member; 230, fourth sealing member;

[0034] 300, transmission unit; 310, first gear; 320, end face eccentric gear; 330, connecting rod;

[0035] 400, driving unit;

[0036] a, main extension line. DETAILED DESCRIPTION

[0037] Currently, oral care devices on the market mainly adopt three design methods to achieve oral irrigation function. The first method is the combination design of a water pick and a liquid supply base station, wherein the liquid supply base station is internally provided with a pump body, which is responsible for delivering water flow to the water pick to generate water flow impact. The second method is to integrate the pump body in the water pick itself, so that the device can independently provide water flow impact without the need for an additional liquid supply base station. The third method is a flushing all-in-one machine, which not only integrates the irrigation function but also has the tooth brushing function, and the pump body is also integrated inside to provide the required water flow impact. These designs have their own characteristics and meet the needs of different users and use scenarios, but all of them need to use a pump body to provide water flow impact.

[0038] However, common water pumps such as piston pumps, diaphragm pumps, etc. mainly extract liquid through stroke and extrude it into the output pipeline, which will cause water vapor leakage in the process. Taking the piston pump as an example, the applicant found through in-depth research that the pump body has a cylinder sleeve inside, and the piston reciprocates inside the cylinder sleeve to suck and discharge liquid, which will adhere to the inner wall of the cylinder sleeve in the process, evaporate into water vapor and enter the transmission cavity, and then spread from the transmission cavity to the motor and outward, thereby causing damage to the motor and rust and damage to the electronic components such as the battery and circuit board inside the oral care device. Moreover, with the long-term operation of the piston, the sealing ring between the piston and the cylinder sleeve may also be damaged or deformed, causing liquid leakage, which will also cause damage to the motor and rust and damage to the electronic components such as the battery and circuit board inside the oral care device.

[0039] The applicant once tried to install two sealing rings on the piston to improve the sealing performance between the piston and the inner wall of the cylinder sleeve by increasing the number of sealing rings, thereby avoiding water leakage. However, this solution also correspondingly increases the friction between the piston and the cylinder sleeve, which requires more power to drive the piston, and still cannot avoid the liquid from adhering to the inner wall of the cylinder sleeve and evaporating and leaking.

[0040] The applicant also tried to set a concertina-shaped sealing sleeve between the outer wall of the cylinder sleeve or the outer wall of the pump housing and the connecting rod driving the piston to move, which uses the sealing sleeve to isolate the liquid adhering to the inner wall of the cylinder sleeve from the outside to avoid the liquid adhering to the inner wall of the cylinder sleeve from evaporating and spreading outward. Although this solution can prevent liquid and moisture leakage, the sealing sleeve needs to move with the connecting rod, which is prone to damage and aging, has a low service life, and still causes leakage and damages electronic components after damage and aging.

[0041] To this end, the application forms a transmission cavity through a housing component of the fluid pumping assembly, and the transmission cavity is sealed from the outside of the housing component. The sealed transmission cavity is used to confine the water vapor formed by the evaporation of the liquid adhering to the inner wall of the cylinder sleeve in the transmission cavity, thereby avoiding the leakage of the water vapor to the outside and causing damage to the electronic components inside the oral care device, and improving the service life. Moreover, the sealed transmission cavity is formed by the housing component, and the housing component does not need to move with the transmission unit, and is not prone to fatigue damage, thereby ensuring the sealing life and sealing effect.

[0042] In addition, the application further forms a drive cavity for accommodating the drive unit through the housing component, and the drive cavity is sealed from the transmission cavity, so that the water vapor leaked into the transmission cavity can be further spread to the drive cavity to cause damage to the drive unit, thereby ensuring the service life of the drive unit. At the same time, the drive cavity is sealed from the outside of the housing component, so that even if the water vapor in the transmission cavity accidentally leaks into the drive cavity, the water vapor can be confined inside the housing component through the sealing structure of the drive cavity, thereby avoiding the further spread of the failure to the outside of the housing component and reducing the failure range.

[0043] To make the purpose, technical scheme and advantages of the embodiments of the application clearer, the technical scheme in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are some embodiments of the application, rather than all the embodiments of the application.

[0044] As shown in Figure 1 In an implementable embodiment, the application provides a fluid pumping assembly 1000, which can be used in an oral cleaning related device to provide water flow impact for oral cleaning, and can also be applied to other devices requiring water flow driving, which is not limited here.

[0045] In the embodiment, the fluid pumping assembly 1000 can include a housing component 100, which is used as the main component of the fluid pumping assembly 1000 and can be used to support and protect other components in the fluid pumping assembly 1000. The housing component 100 can have an execution cavity 110, a transmission cavity 120, a drive cavity 130, an inlet 111 and an outlet 112. The inlet 111 and the outlet 112 are in communication with the execution cavity 110. The transmission cavity 120 is sealed from the outside of the housing component 100, and the transmission cavity 120 is sealed from the drive cavity 130.

[0046] The fluid pumping assembly 1000 can further comprise an execution unit 200, a transmission unit 300 and a driving unit 400, wherein the execution unit 200 is arranged in the execution chamber 110 and performs movement in the execution chamber 110 to pump in and discharge water flow. The transmission unit 300 is arranged in the transmission chamber 120, and is located between the driving unit 400 and the execution unit 200, and partially extends into the execution chamber 110 and is connected with the execution unit 200. The driving unit 400 is arranged in the driving chamber 130 as a power source, and the output end of the driving unit 400 extends into the transmission chamber 120 and is connected with the transmission unit 300. The driving unit 400 drives the execution unit 200 to move in the execution chamber 110 through the transmission unit 300, so that liquid is pumped into the execution chamber 110 through the liquid inlet 111, and water flow is provided through the liquid outlet 112.

[0047] In practical applications, the fluid pumping assembly 1000 can be a diaphragm pump or a piston pump, and the driving unit 400 can be a pneumatic cylinder or an electric motor, but considering the controllability of the electric motor and the simple and easy-to-implement electric control structure, the application preferably uses an electric motor as the driving unit 400. The execution unit 200 can adopt different structures according to the specific form of the fluid pumping assembly 1000, for example, when the fluid pumping assembly 1000 is a diaphragm pump, the execution unit 200 can be a diaphragm structure, and when the fluid pumping assembly 1000 is a piston pump, the execution unit 200 can be a piston structure.

[0048] It is worth mentioning that the most common way of wet fluid (liquid or water vapor) leakage of the fluid pumping assembly 1000 is that when the execution unit 200 moves in the execution chamber 110, liquid will adhere to the inner wall surface of the execution chamber 110 (or the inner wall surface of the cylinder sleeve 210 located in the execution chamber 110), and then evaporate into water vapor and diffuse into the transmission chamber 120, forming wet fluid leakage. That is, the transmission chamber 120 is the first area through which the most common wet fluid leakage occurs. Therefore, by surrounding the transmission chamber 120 with the housing component 100 and sealing the transmission chamber 120 from the outside of the housing component 100, the application can use the sealed transmission chamber 120 to limit the leaked wet fluid in the transmission chamber 120, thereby avoiding further spread of the wet fluid to other areas and causing damage. In particular, when the fluid pumping assembly 1000 is applied to an oral cleaning device, the leakage of wet fluid can be avoided to damage the electronic components inside the oral care device, thereby improving the service life of the oral care device.

[0049] Moreover, the sealed transmission chamber 120 formed by the housing component 100 has a high hardness requirement on the housing component 100 itself, which is not easy to be damaged, and the housing component 100 does not need to move with the transmission unit 300, so it is not easy to be damaged by fatigue, thereby ensuring the reliability and service life of the sealing of the transmission chamber 120.

[0050] Further, the present application further utilizes the housing component 100 to form a driving cavity 130 for accommodating the driving unit 400, and seals the driving cavity 130 from the transmission cavity 120, so that the humid fluid leaked into the transmission cavity 120 can be prevented from further spreading to the driving cavity 130 to damage the driving unit 400, and the service life of the driving unit 400 is ensured.

[0051] As shown in Figure 2 and Figure 3 , in an alternative embodiment, the housing component 100 can include a first housing piece 140, a second housing piece 150, and a pump body 160. The first housing piece 140 and the second housing piece 150 are coupled and jointly surround the execution cavity 110, the transmission cavity 120, and the driving cavity 130, and the pump body 160 is connected to one end of the whole formed by the splicing of the first housing piece 140 and the second housing piece 150.

[0052] In the present embodiment, the pump body 160 can be made of copper, alloy, or other high-strength materials. The first housing piece 140 and the second housing piece 150 can be injection molded.

[0053] In actual application, the first housing piece 140 and the second housing piece 150 can be provided with a buckle structure, and the first housing piece 140 and the second housing piece 150 are mutually clamped and spliced to form an integral whole through the buckle structure; and / or, the first housing piece 140 and the second housing piece 150 can be spliced to form an integral whole through screw locking. The integral whole formed by the splicing of the first housing piece 140 and the second housing piece 150 can be provided with a sealing structure between the pump body 160, so that the assembly gap between the integral whole formed by the splicing of the first housing piece 140 and the second housing piece 150 and the pump body 160 is sealed through the sealing structure, and the humid fluid in the transmission cavity 120 is prevented from leaking to the outside of the housing component 100 through the assembly gap.

[0054] Regarding the specific sealing structure of the transmission cavity 120, as shown in Figures 3 to 6 , in an alternative embodiment, the joint surface of the first housing piece 140 and / or the second housing piece 150 is provided with a first sealing member 170, and the first sealing member 170 is arranged at least around the transmission cavity 120, so that the humid fluid in the transmission cavity 120 is prevented from leaking to the outside of the housing component 100 through the splicing gap of the first housing piece 140 and the second housing piece 150.

[0055] The first housing member 140 or the second housing member 150 is provided with a first clearance hole 141, and the output end of the drive unit 400 extends into the transmission cavity 120 through the first clearance hole 141. The output end of the drive unit 400 and the first clearance hole 141 are filled with the second sealing member 180, so as to avoid that the humid fluid in the transmission cavity 120 leaks to the outside of the housing member 100 through the gap between the output end of the drive unit 400 and the first clearance hole 141, and then leaks to the outside of the housing member 100 through the drive cavity 130.

[0056] The drive cavity 130 can be in communication with the outside of the housing member 100.

[0057] The drive cavity 130 can be isolated and sealed from the outside of the housing member 100. As shown in Figure 3 and Figure 4 In an implementable embodiment, the splicing surface of the first housing member 140 and / or the second housing member 150 is provided with a third sealing member 190, and the third sealing member 190 is arranged around the drive cavity 130, so as to avoid that the humid fluid leaked into the drive cavity 130 leaks to the outside of the housing member 100 through the splicing gap of the first housing member 140 and the second housing member 150. At the same time, considering that the drive unit 400 also needs to be connected with the electronic device wire harness outside the housing member 100, the first housing member 140 or the second housing member 150 is provided with a wire harness connecting hole 142 in communication with the drive cavity 130, and the wire harness connecting hole 142 is filled with sealing glue, so as to avoid that the humid fluid leaked into the drive cavity 130 leaks to the outside of the housing member 100 through the wire harness connecting hole 142. In this way, even if the humid fluid in the transmission cavity 120 accidentally leaks into the drive cavity 130, the humid fluid can be limited to the inside of the housing member 100 through the sealing structure of the drive cavity 130, and the harm caused by the humid fluid is prevented from further spreading to the outside of the housing member 100, thereby reducing the harm range caused by the humid fluid.

[0058] The first sealing member 170 and the third sealing member 190 can be integrally formed, that is, the first sealing member 170 and the third sealing member 190 can form an integral part, so as to facilitate integrated installation and disassembly, and simplify the installation operation. Of course, the first sealing member 170 and the third sealing member 190 can also be independently arranged or at least partially overlapped, and the present application does not make specific limitation in this regard.

[0059] In actual application, the first housing member 140 or the second housing member 150 can form an integral housing assembly with the first sealing member 170 through secondary injection molding, so as to simplify the assembly process. Of course, the splicing surface of the first housing member 140 and / or the second housing member 150 can be provided with a receiving groove, so that the first sealing member 170 can be positioned and installed in the receiving groove first, and then the first housing member 140 and the second housing member 150 are spliced and connected.

[0060] As shown in Figure 5 In an implementable embodiment, the first accommodation hole 141 and the wiring harness connecting hole 142 can be formed on the same housing member, i.e., both the first accommodation hole 141 and the wiring harness connecting hole 142 are formed on the first housing member 140, or both the first accommodation hole 141 and the wiring harness connecting hole 142 are formed on the second housing member 150, so as to facilitate the design of the holes on one housing member and simplify the structure of the other housing member.

[0061] In order to facilitate the understanding of the specific assembly relationship between the execution unit 200 and the rest of the structure in the fluid pumping assembly 1000, the following will be exemplarily described with the execution unit 200 as a piston structure.

[0062] Again referring to Figure 1 and Figure 3 In an implementable embodiment, the execution unit 200 can include a cylinder sleeve 210, a piston 220, and a fourth sealing member 230, wherein the first housing member 140 or the second housing member 150 is provided with a second accommodation hole 143, the second accommodation hole 143 communicates the execution chamber 110 and the transmission chamber 120, and the cylinder sleeve 210 is inserted into the execution chamber 110. The piston 220 is slidingly arranged inside the cylinder sleeve 210, the piston 220 is connected with a piston sealing member 221, and the piston sealing member 221 cooperates with the inner wall surface of the cylinder sleeve 210 to seal. The fourth sealing member 230 is sleeved on the outer wall surface of one end of the cylinder sleeve 210, and the fourth sealing member 230 cooperates with the inner wall surface of the second accommodation hole 143 to seal. In this way, the piston sealing member 221 can be used to prevent the humid fluid in the pump body 160 from leaking into the transmission chamber 120 through the inside of the cylinder sleeve 210, and the fourth sealing member 230 can be used to prevent the humid fluid in the pump body 160 from leaking into the transmission chamber 120 through the outside of the cylinder sleeve 210, so as to reduce the possibility of the humid fluid in the pump body 160 leaking into the transmission chamber 120 as much as possible.

[0063] In actual application, in addition to preventing the humid fluid from leaking from the pump body 160 into the transmission chamber 120, the piston sealing member 221 can also prevent the pressure in the pump body 160 from leaking, thereby maintaining the pressure inside the pump body 160, so that the fluid can be pumped into and out of the pump body 160 by pressure during the reciprocating movement of the piston 220. The piston sealing member 221 can be arranged at the end of the piston 220 away from the transmission unit 300, or can be arranged on the outer peripheral surface of the piston 220. The fourth sealing member 230 can be an O-ring, which is adapted to the shape of the outer surface of the cylinder sleeve 210 and the inner wall surface formed by the first housing member 140 and the second housing member 150, so as to ensure the sealing effect.

[0064] Regarding the specific structure of the transmission unit 300, as follows: Figure 3 As shown, in one feasible embodiment, the transmission unit 300 may include a first gear 310, an end-face eccentric gear 320, and a connecting rod 330. Both the first gear 310 and the end-face eccentric gear 320 are disposed within the transmission cavity 120. The end-face eccentric gear 320 is rotatably connected to the housing component 100. The first gear 310 is connected to the output end of the drive unit 400 and meshes with the gear portion of the end-face eccentric gear 320. The eccentric portion of the end-face eccentric gear 320 is connected to one end of the connecting rod 330, and the other end of the connecting rod 330 is connected to the execution unit 200. When the execution unit 200 is a piston structure, the other end of the connecting rod 330 is connected to the piston 220. When the drive unit 400 drives the first gear 310 to rotate, the first gear 310 can drive the eccentric portion of the end-face eccentric gear 320 to perform eccentric motion, and the connecting rod 330 converts the eccentric motion into linear motion, thereby driving the execution unit 200 to perform linear reciprocating motion.

[0065] The eccentric portion of the aforementioned end-face eccentric gear 320 and the connecting rod 330 and the first gear 310 can be located on opposite sides of the gear portion of the end-face eccentric gear 320, respectively.

[0066] The first gear 310, the eccentric portion of the end-face eccentric gear 320, and the connecting rod 330 can also be located on the same side of the gear portion of the end-face eccentric gear 320. The first gear 310, the eccentric portion of the end-face eccentric gear 320, and the connecting rod 330 share the same thickness space, thereby reducing the overall thickness of the fluid pumping assembly 1000 and making the fluid pumping assembly 1000 thinner. When the fluid pumping assembly 1000 is used in the grip housing of an oral care device, by making the fluid pumping assembly 1000 thinner, the grip housing can be made as slim as possible to facilitate user grip and operation.

[0067] like Figure 1 As shown, in one feasible embodiment, the output end of the drive unit 400 has an output end axis, and the drive unit 400, transmission unit 300, and execution unit 200 can be arranged along the output end axis of the drive unit 400. That is, the drive unit 400, transmission unit 300, and execution unit 200 are arranged in a straight line, thereby enabling a slimmer grip housing.

[0068] Based on the same inventive concept, such as Figure 7 As shown, this application also provides an oral care device, which can be a water flosser or a water flosser combined with a brush. Specifically, the oral care device includes at least a gripping housing 2000 and the aforementioned fluid pumping assembly 1000, wherein the gripping housing 2000 has an outer wall and a receiving chamber 2100 enclosed by the outer wall, the receiving chamber 2100 being used to house the electronic device 2200 and the fluid pumping assembly 1000.

[0069] Taking the oral care device as an example, the oral care device can further include a brush head and a motor, wherein the brush head has a transmission flow channel and a communication port and a liquid jet port located at both ends of the transmission flow channel, and the brush head can be provided with bristles, and the bristles are located at one end of the brush head provided with the liquid jet port. The motor has a power output shaft, and the motor is connected with the brush head through the power output shaft to drive the brush head to perform cleaning movement; and the power output shaft is configured as a hollow shaft, and the liquid outlet 112 of the fluid pumping assembly 1000 is communicated with the transmission flow channel in the brush head through the power output shaft, so that the fluid pumped by the fluid pumping assembly 1000 can pass through the power output shaft and the transmission flow channel in sequence, and finally output water flow impact from the liquid jet port.

[0070] Taking the oral care device as an example, the oral care device can further include a brush head and a motor, wherein the brush head has a transmission flow channel and a communication port and a liquid jet port located at both ends of the transmission flow channel, and the brush head can be provided with bristles, and the bristles are located at one end of the brush head provided with the liquid jet port. The motor has a power output shaft, and the motor is connected with the brush head through the power output shaft to drive the brush head to perform cleaning movement; and the power output shaft is configured as a hollow shaft, and the liquid outlet 112 of the fluid pumping assembly 1000 is communicated with the transmission flow channel in the brush head through the power output shaft, so that the fluid pumped by the fluid pumping assembly 1000 can pass through the power output shaft and the transmission flow channel in sequence, and finally output water flow impact from the liquid jet port.

[0071] Further, the holding shell 2000 has a main extension line a. The output end axis of the driving unit 400 is substantially parallel to the main extension line a, and the electronic device 2200 and the fluid pumping assembly 1000 are arranged in a direction perpendicular to the main extension line a, so that by arranging the driving unit 400, the transmission unit 300 and the execution unit 200 along the main extension line a, the fluid pumping assembly 1000 is made thin, and the accommodation chamber 2100 has a reserved space in the direction perpendicular to the main extension line a for accommodating the electronic device 2200.

[0072] In an implementable embodiment, a communication hole can be formed on the shell part 100, the communication hole is communicated with the transmission cavity 120, and the communication hole is communicated with the external environment through a flow guide pipe. In this way, when the humid fluid in the execution cavity 110 leaks into the transmission cavity 120, the humid fluid can flow to the external environment through the flow guide pipe, so as to avoid that the humid fluid stays in the transmission cavity 120 for a long time, which can damage the components in the transmission cavity 120 and the sealing structure of the transmission cavity 120, and further reduce the possibility of damage to the driving unit 400 and the electronic device 2200.

[0073] In actual application, the communication hole can be formed on the first shell part 140 or the second shell part 150, and located at the bottom of the transmission cavity 120, so as to facilitate the humid fluid leaked into the transmission cavity 120 to flow out.

[0074] It is to be noted that the main extension line a can be understood as a line connecting the midpoints of each cross section of the holding case 2000. For the specific structure of the fluid pumping assembly 1000, reference can be made to the details described in the above embodiments, which will not be repeated here.

[0075] The terms "on", "under", and the like in the description and the claims are used for the convenience of describing the relative positional relationship of the structures in the drawings, and are not intended to limit the scope of the present application. Changes or adjustments of the relative relationship without substantial changes in the technical content are also considered as the scope of the present application.

[0076] It should be noted that in the present application, unless otherwise specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact or indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0077] In addition, in the present application, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0078] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0079] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A fluid pumping assembly for oral cleaning, characterized by, The fluid pumping assembly (1000) at least comprises: a housing component (100) having an execution cavity (110), a transmission cavity (120), a driving cavity (130), an inlet (111) and an outlet (112) communicating with the execution cavity (110), the transmission cavity (120) being sealed from the outside of the housing component (100), and the transmission cavity (120) being sealed from the driving cavity (130); an execution unit (200) arranged in the execution cavity (110); a transmission unit (300) arranged in the transmission cavity (120), and the transmission unit (300) partially extending into the execution cavity (110) and being connected with the execution unit (200); a driving unit (400) arranged in the driving cavity (130), an output end of the driving unit (400) extending into the transmission cavity (120) and being connected with the transmission unit (300), the driving unit (400) driving the execution unit (200) in the execution cavity (110) through the transmission unit (300) to pump liquid into the execution cavity (110) through the inlet (111) and provide water flow impact through the outlet (112).

2. The fluid pumping assembly of claim 1, wherein, The housing component (100) comprises a first housing piece (140), a second housing piece (150) and a pump body (160), wherein, the first housing piece (140) and the second housing piece (150) are coupled and jointly surround the execution cavity (110), the transmission cavity (120) and the driving cavity (130); the pump body (160) is connected with one end of the whole formed by splicing the first housing piece (140) and the second housing piece (150).

3. The fluid pumping assembly of claim 2, wherein, a joint surface of the first housing piece (140) and / or the second housing piece (150) is provided with a first sealing member (170), the first sealing member (170) being arranged at least around the transmission cavity (120); and / or, the first housing piece (140) or the second housing piece (150) is provided with a first clearance hole (141), an output end of the driving unit (400) extending into the transmission cavity (120) through the first clearance hole (141), and a second sealing member (180) being filled between the output end of the driving unit (400) and the first clearance hole (141).

4. The fluid pumping assembly of claim 3, wherein, a joint surface of the first housing piece (140) and / or the second housing piece (150) is provided with a third sealing member (190), the third sealing member (190) being arranged around the driving cavity (130).

5. The fluid pumping assembly of claim 4, wherein, the first sealing member (170) and the third sealing member (190) are integrally formed.

6. The fluid pumping assembly of claim 4, wherein, the first sealing member (170) and the third sealing member (190) are independently arranged or at least partially coincide.

7. The fluid pumping assembly of claim 3, wherein, one of the first housing piece (140) and the second housing piece (150) is integrally formed with the first sealing member (170) by means of secondary injection molding, and the other is interference-fitted with the first sealing member (170).

8. The fluid pumping assembly of claim 4, wherein, One of the first housing member (140) and the second housing member (150) is formed integrally with the first seal (170) and the third seal by means of overmolding, and the other is in interference fit with the first seal (170) and the third seal.

9. The fluid pumping assembly of claim 3, wherein, The first housing member (140) or the second housing member (150) is provided with a wire harness connecting hole (142) in communication with the driving cavity (130), and the wire harness connecting hole (142) is filled with sealant.

10. The fluid pumping assembly of claim 9, wherein, The first accommodation hole (141) and the wire harness connecting hole (142) are both arranged on the first housing member (140).

11. The fluid pumping assembly of claim 2, wherein, The execution unit (200) comprises a cylinder sleeve (210), a piston (220) and a fourth seal (230); The first housing member (140) or the second housing member (150) is provided with a second accommodation hole (143) in communication with the execution cavity (110) and the transmission cavity (120), and the cylinder sleeve (210) is inserted into the execution cavity (110); The piston (220) is slidably arranged in the interior of the cylinder sleeve (210), and the piston (220) is connected with a piston seal (221) which is in sealing cooperation with the inner wall surface of the cylinder sleeve (210); The fourth seal (230) is arranged on the outer wall surface of one end of the cylinder sleeve (210), and the fourth seal (230) is in sealing cooperation with the inner wall surface of the second accommodation hole (143).

12. The fluid pumping assembly of claim 1, wherein, The transmission unit (300) comprises a first gear (310), an end face eccentric gear (320) and a connecting rod (330); The first gear (310) and the end face eccentric gear (320) are arranged in the transmission cavity (120), the first gear (310) is connected with the output end of the driving unit (400) and is in meshing cooperation with the gear portion of the end face eccentric gear (320); The eccentric portion of the end face eccentric gear (320) is connected with one end of the connecting rod (330), the other end of the connecting rod (330) is connected with the execution unit (200), and the first gear (310), the eccentric portion of the end face eccentric gear (320) and the connecting rod (330) are located on the same side of the gear portion of the end face eccentric gear (320).

13. The fluid pumping assembly of any one of claims 1 to 12, wherein, The driving unit (400), the transmission unit (300) and the execution unit (200) are arranged along the output end axis of the driving unit (400).

14. An oral care device characterized by, The oral care device at least comprises a holding housing (2000) and a fluid pumping assembly (1000) according to any one of claims 1 to 13, wherein the holding housing (2000) has an outer wall and a containing chamber (2100) enclosed by the outer wall, the containing chamber (2100) being configured to contain electronic devices (2200) and the fluid pumping assembly (1000).

15. The oral care device of claim 14, wherein, The oral care device further comprises a brush head and a motor; The motor has a power output shaft, the motor drives the brush head to perform a cleaning motion through the power output shaft, the power output shaft is a hollow shaft, the liquid outlet (112) is communicated with a transmission flow channel in the brush head through the power output shaft.

16. The oral care device of claim 14, wherein, The holding shell (2000) has a main extension line (a); An output end axis of the driving unit (400) is substantially parallel to the main extension line (a), the electronic device (2200) and the fluid pumping assembly (1000) are arranged in a direction perpendicular to the main extension line (a).

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