A water pump assembly and a waterpik

Abstract

The application relates to a water pump assembly and a water pick, the water pump assembly comprising: a diaphragm pump with a pump diaphragm, a pump cavity being formed inside the diaphragm pump, the pump diaphragm being sealed to the pump cavity, the diaphragm pump being provided with a water inlet channel and a water outlet channel, the water inlet channel and the water outlet channel being provided with one-way valves; a fixed shell connected to the diaphragm pump; a sliding member arranged on the fixed shell and performing linear reciprocating motion, one end of the sliding member being connected to the pump diaphragm; a driven gear arranged inside the fixed shell and being rotatable, one side of the driven gear along an axial direction of the driven gear being provided with internal teeth, and the other side of the driven gear being provided with an eccentric wheel; a connecting rod, one end of the connecting rod being connected to the eccentric wheel, and the other end of the connecting rod being rotatably connected to the sliding member; a motor arranged outside the fixed shell, a shaft of the motor extending into the fixed shell, a driving gear being connected to the shaft of the motor, and the driving gear being engaged with the internal teeth of the driven gear; and wherein the axial direction of the driven gear is perpendicular to the movement direction of the sliding member.

Description

Technical Field

[0001] This application belongs to the field of oral irrigator technology, and relates to a water pump assembly and an oral irrigator including the water pump assembly. Background Technology

[0002] A water flosser is a device used for oral care. It uses a water pump assembly to draw water from a tank at a certain pressure and spray it out through the nozzle of the water flosser. The sprayed water jet rinses the teeth and cleans the mouth. It is widely used in people's daily lives.

[0003] Existing oral irrigators use diaphragm pumps, where the pump diaphragm is usually directly driven by a connecting rod and gears. During operation, the connecting rod will deflect and vibrate, which can easily damage the pump diaphragm and cause leakage in the pump chamber. In addition, the overall structure of the pump assembly is relatively large, which is not conducive to the miniaturization design of oral irrigators. Utility Model Content

[0004] This application aims to provide a water pump assembly that vertically arranges the motor and diaphragm pump, reducing the length of the water pump assembly and facilitating the miniaturization design of the water flosser.

[0005] This application is achieved through the following technical solution.

[0006] This technical solution provides a water pump assembly for use in a dental flosser, including: A membrane pump with a pump membrane has a pump chamber formed inside, the pump membrane is sealed in the pump chamber, the membrane pump is provided with an inlet channel and an outlet channel, and both the inlet channel and the outlet channel are provided with a one-way valve; The fixed housing connected to the diaphragm pump; A sliding member is provided on the fixed shell to perform reciprocating linear motion, and one end of the sliding member is connected to the pump diaphragm; A rotatable driven wheel is located inside the fixed shell. The driven wheel has internal teeth on one side along its axial direction and an eccentric wheel on the other side. A connecting rod, one end of which is connected to the eccentric wheel, and the other end of which is rotatably hinged to the sliding member; A motor is located outside the fixed housing, with the motor shaft extending into the fixed housing. A drive gear is connected to the motor shaft, and the drive gear meshes with the internal teeth of the driven gear. The axial direction of the passive wheel is perpendicular to the movement direction of the sliding member.

[0007] The technical advantages of this solution are as follows: The diaphragm pump, employing a diaphragm structure, transmits drive between the pump diaphragm and the driven wheel via a sliding member. The linear reciprocating motion of the sliding member reduces vibration of the pump diaphragm and pump assembly, extending the diaphragm's lifespan. Furthermore, the driven wheel with internal teeth allows for a vertical arrangement of the motor and diaphragm pump, reducing the pump assembly's length and facilitating miniaturization of the water flosser. In one embodiment of the above technical solution, the diaphragm pump includes a pump housing, and the pump diaphragm is clamped between the pump housing and the fixed housing.

[0008] In one embodiment of the above technical solution, the membrane pump further includes inlet and outlet end caps, which are connected to the pump casing to form a pump chamber, and the inlet channel and the outlet channel are both provided on the inlet and outlet end caps.

[0009] In one embodiment of the above technical solution, the passive wheel rotates inside the fixed shell via a rotating shaft.

[0010] In one embodiment of the above technical solution, the fixed shell is provided with a sliding hole, and the sliding member is slidably disposed in the sliding hole to perform reciprocating motion.

[0011] In one embodiment of the above technical solution, the sliding member is a hollow tubular structure, and an inwardly recessed opening is formed at one end of the sliding member near the pump membrane. A slot is provided on the connecting post of the pump membrane. The connection between the sliding member and the diaphragm is realized by the inwardly recessed opening cooperating with the slot.

[0012] In one embodiment of the above technical solution, one end of the connecting rod is provided with a collar portion, the collar portion is sleeved on the eccentric wheel, and the other end of the connection is rotatably hinged to the sliding member through a pin.

[0013] Based on the above technical solutions, this application also provides a dental flosser, including the water pump assembly described in the above technical solutions.

[0014] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0015] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0016] Figure 1 This is a schematic diagram of the structure of a water pump assembly shown in one embodiment of this application.

[0017] Figure 2This is an exploded structural diagram of a water pump assembly shown in one embodiment of this application.

[0018] Figure 3 This is a cross-sectional structural schematic diagram of a water pump assembly shown in one embodiment of this application.

[0019] Explanation of reference numerals in the attached figures: 11-Diaphragm pump; 111-Pump casing; 116-Inlet and outlet end caps; 112-Pump diaphragm; 1121-Connecting column; 1122-Slot; 113-Inlet channel; 114-Outlet channel; 115-Check valve; 12-Fixed housing; 121-Sliding hole; 13-Sliding component; 14-Driven wheel; 141-Internal gear; 142-Eccentric wheel; 15-Connecting rod; 151-Collar part; 16-Motor; 17-Driving gear; 18-Rotating shaft; 19-Pin shaft. Detailed Implementation

[0020] The technical solutions of some embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0022] like Figures 1 to 3 As shown in the illustration, this embodiment provides a water pump assembly for use in a dental flosser, comprising: A diaphragm pump 11 with a diaphragm 112 has a pump chamber inside, in which the diaphragm is sealed. The diaphragm pump 11 has an inlet channel 113 and an outlet channel 114, both of which are equipped with check valves 115. The inlet channel 113 is connected to the water tank of the oral irrigator via a hose, and the outlet channel 114 is connected to the nozzle of the oral irrigator. The fixed housing 12 is connected to the diaphragm pump 111; A sliding member 13 is provided on the fixed shell 12 to perform reciprocating linear motion, and one end of the sliding member 13 is connected to the pump diaphragm 112; A driven wheel 14 is located inside the fixed shell 12 and is rotatable. The driven wheel 14 has an internal tooth 141 on one side along its axial direction and an eccentric wheel 142 on the other side. Linkage 15, one end of which is connected to eccentric wheel 142, and the other end is rotatably hinged to sliding member 13; A motor 16 is located outside the fixed housing 12. The shaft of the motor 16 extends into the fixed housing 12. A drive gear 17 is connected to the shaft of the motor 16. The drive gear 17 meshes with the internal teeth 141 of the driven gear 14. The axial direction of the passive wheel 14 is perpendicular to the movement direction of the sliding member 13.

[0023] In this embodiment, the water pump assembly adopts a diaphragm pump 11 with a diaphragm structure. The pump membrane 112 and the driven wheel 14 are driven by a sliding member 13. Since the linear reciprocating motion of the sliding member 13 can reduce the vibration of the pump membrane 112 and the water pump assembly, the life of the pump membrane 112 is extended. By using the driven wheel 14 with internal teeth 141, the motor 16 and the diaphragm pump 11 are arranged vertically, which reduces the length of the water pump assembly and is beneficial for the miniaturization design of the water flosser. In this embodiment, the pump diaphragm 112 is clamped between the pump housing 111 and the fixed housing 12. The pump diaphragm 112 is sealed in the pump cavity of the pump housing 111. The middle part of the pump diaphragm 112 has a connecting post 1121. The connecting post 1121 of the pump diaphragm 112 is driven to move by the sliding member 13, so that the space of the pump cavity changes repeatedly, drawing water in from the water inlet channel 113 and then squeezing it out from the water outlet channel 114.

[0024] In this embodiment, the passive wheel 14 and the eccentric wheel 142 are integrally formed. The passive wheel 14 is located inside the fixed shell 12 and rotates through the rotating shaft 18. The rotating shaft 18 passes through the passive wheel 14 and its two ends are fixed to the inner wall of the fixed shell 12.

[0025] In this embodiment, for ease of assembly, the fixed shell 12 is composed of two interconnected shell parts. A sliding hole 121 is provided on the fixed shell 12. The size and shape of the sliding hole 121 are adapted to the sliding member 13. The sliding member 13 is slidably disposed in the sliding hole 121 and performs linear reciprocating motion in the sliding hole 121 under the drive of the connecting rod 15.

[0026] In this embodiment, the slider 13 is a hollow tubular structure. The end of the slider 13 near the pump membrane 112 forms an inward opening. The connecting post 1121 of the pump membrane 112 is provided with a slot 1122. The slider 13 and the pump membrane 112 are connected by the inward opening and the slot 1122.

[0027] In this embodiment, the pump housing 111 includes an inlet and outlet end cap 116. The inlet and outlet end cap 116 and the pump housing 111 are sealed together to form a pump chamber. The pump diaphragm 112 is sealed in the pump chamber. The inlet channel 113 and the outlet channel 114 are both provided on the inlet and outlet end cap 116. The one-way valve 115 is a valve plate. The one-way valve 115 is sandwiched between the inlet and outlet end cap 116 and the pump housing 111. The one-way valve 115 allows the water to flow in one direction.

[0028] In this embodiment, one end of the connecting rod 15 is provided with a collar portion 151, which is sleeved on the eccentric wheel 142. The other end is rotatably hinged to the sliding member 13 via a pin 19. When the driven wheel 14 rotates, the sliding member 13 is driven to move through the eccentric wheel 142 and the connecting rod 15, and the sliding member 13 drives the pump diaphragm 112 to extend and retract.

[0029] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A water pump assembly, characterized in that, include: A membrane pump (11) having a pump membrane (112) is provided with an inlet channel (113) and an outlet channel (114), and both the inlet channel (113) and the outlet channel (114) are provided with a check valve (115). A fixed housing (12) connected to the diaphragm pump (11). A sliding member (13) is provided on the fixed shell (12) to perform linear reciprocating motion, and one end of the sliding member (13) is connected to the pump diaphragm (112); A rotatable passive wheel (14) is provided inside the fixed shell (12). The passive wheel (14) has an internal tooth (141) on one side along its axial direction and an eccentric wheel (142) on the other side. The connecting rod (15) has one end connected to the eccentric wheel (142) and the other end rotatably hinged to the sliding member (13); A motor (16) is located outside the fixed housing (12). The shaft of the motor (16) extends into the fixed housing (12). A drive gear (17) is connected to the shaft of the motor (16). The drive gear (17) meshes with the internal teeth (141) of the driven gear (14). The axial direction of the passive wheel (14) is perpendicular to the movement direction of the sliding member (13).

2. The water pump assembly according to claim 1, characterized in that, The diaphragm pump (11) includes a pump housing (111) and a pump diaphragm (112) clamped between the pump housing (111) and the fixed housing (12).

3. The water pump assembly according to claim 2, characterized in that, The membrane pump (11) also includes an inlet and outlet end cap (116), which is connected to the pump housing (111) to form a pump chamber. The inlet channel (113) and the outlet channel (114) are both located on the inlet and outlet end cap (116).

4. The water pump assembly according to claim 1, characterized in that, The passive wheel (14) is located inside the fixed shell (12) via a rotating shaft (18) and rotates.

5. The water pump assembly according to claim 1, characterized in that, The fixed shell (12) is provided with a sliding hole (121), and the sliding member (13) is slidably disposed in the sliding hole (121) to perform reciprocating motion.

6. The water pump assembly according to claim 1, characterized in that, The sliding member (13) is a hollow tubular structure. The end of the sliding member (13) near the pump membrane (112) forms an inward opening. The connecting post (1121) of the pump membrane (112) is provided with a slot (1122). The connection between the sliding member (13) and the pump membrane (112) is realized by the inward opening cooperating with the slot (1122).

7. The water pump assembly according to claim 1, characterized in that, One end of the connecting rod (15) is provided with a collar (151), which is sleeved on the eccentric wheel (142). The other end of the connection is rotatably hinged to the sliding member (13) through a pin (19).

8. A dental flosser, characterized in that, Includes the water pump assembly as described in any one of claims 1 to 7.

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