Diaphragm pump of oral irrigator and oral irrigator

Abstract

An oral irrigator diaphragm pump and an oral irrigator relate to the technical field of oral irrigators, and the oral irrigator diaphragm pump comprises: a pump shell, which is internally provided with a liquid storage cavity and a water outlet cavity, and is also provided with a water inlet channel; the drum membrane is used for sealing the liquid storage cavity; the water inlet valve assembly comprises a water inlet valve arranged in the water inlet channel and a water inlet valve elastic piece used for making the water inlet valve abut against the interior of the water inlet channel. The water outlet valve assembly comprises a water outlet valve arranged in the water outlet channel and a water outlet valve elastic piece used for making the water outlet valve abut against the interior of the water outlet channel. And the driving mechanism is used for driving the tympanic membrane to deform to change the capacity of the liquid storage cavity, so that the water inlet valve assembly opens the water inlet channel and the water outlet valve assembly closes the water outlet channel, or the water inlet valve assembly closes the water inlet channel and the water outlet valve assembly opens the water outlet channel. By the adoption of the technical scheme, the water inlet channel and the water outlet channel are closed and opened through the water inlet valve assembly and the water outlet valve assembly respectively, and the water outlet efficiency and the water outlet stability of the oral irrigator are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oral irrigators, and in particular to a diaphragm pump for an oral irrigator and the oral irrigator. Background Art

[0002] With the improvement of living standards, the efficiency of brushing teeth with traditional toothbrushes is low, so the use of oral irrigators to clean teeth has been derived. The principle is that a liquid storage chamber is built into the shell of the oral irrigator, and a piston and a driving mechanism are correspondingly provided in the liquid storage chamber. The driving mechanism drives the piston to reciprocate, and the pressure generated thereby draws water from the water tank into the liquid storage chamber, and then the water is flushed out from the liquid storage chamber through the water outlet channel to the user's mouth, so that the user's mouth is cleaned.

[0003] Existing water flossers usually have a duckbill valve as a water outlet one-way valve in the water outlet channel at the upper end of the liquid storage chamber, and a water inlet hole is set on the peripheral side of the liquid storage chamber to enable the driving mechanism to drive the piston to reciprocate up and down to pump water. However, the duckbill valve is used as the water outlet channel through the gap in the middle. The duckbill valve is easily deformed under the action of the internal pressure of the liquid storage chamber, resulting in the inability to completely close and seal the water outlet channel. The on-off adjustment is not flexible enough, resulting in low water outlet efficiency and poor water outlet stability of the water flosser. Utility Model Content

[0004] The purpose of the present invention is to address the defects and shortcomings in the prior art, and the present invention provides a diaphragm pump for a water flosser and a water flosser.

[0005] The technical solution adopted by the diaphragm pump for a water flosser provided by the utility model is: a diaphragm pump for a water flosser, characterized in that it includes:

[0006] A pump housing is provided with a liquid storage chamber and a water outlet chamber therein, wherein the water outlet chamber and the liquid storage chamber are connected via a water outlet channel, an end of the pump housing away from the water outlet chamber is provided with a mounting groove connected to the liquid storage chamber, and the pump housing is also provided with a water inlet channel connected to the liquid storage chamber, and the water inlet channel is connected to a water inlet pipe;

[0007] an eardrum, disposed in the mounting groove and used to seal the liquid storage cavity;

[0008] a water inlet valve assembly, disposed at the water inlet channel, for closing or opening the water inlet channel to supply rinsing solution to the liquid storage chamber, comprising a water inlet valve disposed in the water inlet channel and a water inlet valve elastic member for pressing the water inlet valve against an end of the water inlet channel away from the liquid storage chamber;

[0009] a water outlet valve assembly, disposed at the water outlet channel, for closing or opening the water outlet channel so that the dental flushing liquid in the liquid storage chamber can enter the water outlet chamber through the water outlet channel, comprising a water outlet valve disposed in the water outlet channel and a water outlet valve elastic member for pressing the water outlet valve against one end of the water outlet channel near the liquid storage chamber; and

[0010] The driving mechanism is located outside the pump housing, and one end of which is connected to the eardrum, and is used to drive the eardrum to deform so that the capacity of the liquid storage chamber changes, so that the water inlet valve assembly opens the water inlet channel and the water outlet valve assembly closes the water outlet channel, or the water inlet valve assembly closes the water inlet channel and the water outlet valve assembly opens the water outlet channel.

[0011] Optionally, the water inlet valve assembly also includes a water inlet valve fixing column fixed in the water inlet channel, the water inlet valve fixing column is located at one end of the water inlet channel close to the liquid storage chamber, the water inlet valve elastic member includes a water inlet valve spring, the water inlet valve spring and the water inlet valve fixing column are both arranged along the length direction of the water inlet channel, and one end of the water inlet valve spring is pressed against the water inlet valve fixing column, and the other end is pressed against the water inlet valve.

[0012] Optionally, the water outlet valve assembly also includes a water outlet valve fixing column fixed in the water outlet channel, the water outlet valve fixing column is located at one end of the water outlet channel away from the liquid storage chamber, the water outlet valve elastic member includes a water outlet valve spring, the water outlet valve spring and the water outlet valve fixing column are both arranged along the length direction of the water outlet channel, and one end of the water outlet valve spring is pressed against the water outlet valve fixing column, and the other end is pressed against the water outlet valve.

[0013] Optionally, the water inlet valve fixing column and the water outlet valve fixing column are integrally formed with the water outlet channel and the water inlet channel respectively, and the water inlet valve fixing column is located at the connection point between the water inlet channel and the liquid storage chamber, and the water outlet valve fixing column is located at the connection point between the water outlet channel and the water outlet chamber.

[0014] Optionally, the pump casing includes a first shell and a second shell connected to each other, the liquid storage chamber and the water outlet chamber are respectively located in the first shell and the second shell, the first shell and the second shell cooperate to form a water outlet channel, and a sealing ring is also provided between the first shell and the second shell.

[0015] Optionally, it also includes a shell, the interior of the shell is provided with a accommodating cavity with a lateral opening, the first shell is located in the accommodating cavity, the second shell at least partially extends out of the accommodating cavity from the lateral opening of the shell, and the driving mechanism is accommodated in the accommodating cavity.

[0016] Optionally, the driving mechanism includes a turntable gear rotatably arranged in the accommodating cavity, an eccentric wheel coaxially arranged with the turntable gear and fixedly connected to the turntable gear, a positioning shaft for positioning the turntable gear and the eccentric wheel, a connecting sleeve sleeved on the eccentric wheel, a connecting shaft arranged on the connecting sleeve and fixedly connected to the eardrum, and a driving member for driving the turntable gear to rotate. The turntable gear and the eccentric wheel are rotatably arranged in the accommodating cavity through the positioning shaft, and a groove for the positioning shaft to pass through is provided on the connecting sleeve. The eccentric wheel can rotate relative to the connecting sleeve so that the eccentric wheel can drive the connecting sleeve and the connecting shaft to perform reciprocating motion when it rotates.

[0017] Optionally, the driving member includes a driving motor fixed in the accommodating chamber and a transmission gear sleeved on the output shaft of the driving motor. The driving motor is located at one end of the accommodating chamber away from the liquid storage chamber. The output shaft of the driving motor extends to the turntable gear. The transmission gear meshes with the turntable gear to drive the turntable gear to rotate.

[0018] Optionally, the eccentric outer sleeve is provided with a protective sleeve for preventing direct contact and friction between the eccentric and the connecting sleeve.

[0019] The present application also provides a water flosser, comprising the water flosser diaphragm pump as described above.

[0020] After adopting the above technical solution, the beneficial effects of the utility model are:

[0021] When the present application is in use, the driving mechanism drives the tympanic membrane to deform relative to the liquid storage chamber, thereby increasing the capacity of the liquid storage chamber, causing the water inlet valve assembly to open the water inlet channel and the water outlet valve assembly to close the water outlet channel. At this time, the irrigating liquid is supplied to the liquid storage chamber through the water inlet channel, so that the irrigating liquid fills the entire liquid storage chamber, thereby achieving water inlet. At this time, the driving mechanism continues to drive the tympanic membrane to deform and reduce the capacity of the liquid storage chamber, causing the water inlet valve assembly to close the water inlet channel and the water inlet valve assembly to open the water outlet channel, thereby allowing the irrigating liquid in the liquid storage chamber to enter the water outlet chamber through the water inlet channel, thereby achieving water outlet. The overall structure is stable and reliable, the closure and sealing are good, and the on-off adjustment is flexible, thereby improving the water outlet efficiency and water outlet stability of the irrigator. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0023] Figure 1 Schematic diagram of the overall structure of this embodiment;

[0024] Figure 2 This is a diagram showing the embodiment with part of the outer shell removed;

[0025] Figure 3 It is a partial cross-sectional view of this embodiment;

[0026] Figure 4 yes Figure 3 Enlarged view of part A;

[0027] Figure 5 1 is a diagram showing the pump housing in this embodiment;

[0028] Figure 6 yes Figure 5 sectional view of;

[0029] Figure 7 It is a partial exploded view of this embodiment.

[0030] Explanation of the accompanying drawings: 10. Pump casing; 11. First casing; 12. Second casing; 101. Liquid storage chamber; 102. Water outlet chamber; 103. Water outlet channel; 104. Mounting groove; 105. Water inlet channel; 106. Sealing ring; 107. Water inlet pipe; 20. Tympanic membrane; 30. Water inlet valve assembly; 31. Water inlet valve; 32. Water inlet valve fixing column; 33. Water inlet valve spring; 40. Water outlet valve assembly; 41. Water outlet valve; 42. Water outlet valve fixing column; 43. Water outlet valve spring; 50. Driving mechanism; 51. Turntable gear; 52. Eccentric wheel; 53. Positioning shaft; 54. Connecting sleeve; 541. Groove; 55. Connecting shaft; 56. Driving motor; 57. Transmission gear; 58. Protective sleeve; 60. Casing. DETAILED DESCRIPTION

[0031] The following is a combination of the appended examples of the present invention Figure 1-4 The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0032] It should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "back," "left," "right," "top," "bottom," "inner," "outer," "back," "side," and "circumferential" used in the present invention to indicate positions or positional relationships are based on the positions or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific position, be constructed, or operate in a specific position. Therefore, they should not be construed as limiting the present invention. In addition, terms such as first and second are used only to distinguish multiple components or structures having the same or similar structures and do not represent any special limitation on the arrangement order or connection relationship.

[0033] This embodiment relates to a diaphragm pump for a water flosser, which is used for a water flosser. Figure 1-Figure 7 , including a pump housing 10, a tympanic membrane 20, a water inlet valve assembly 30, a water outlet valve assembly 40 and a driving mechanism 50, wherein a liquid storage chamber 101 and a water outlet chamber 102 are provided inside the pump housing 10, and the water outlet chamber 102 is connected to the liquid storage chamber 101 through a water outlet channel 103. An installation groove 104 communicating with the liquid storage chamber 101 is provided at one end of the pump housing 10 away from the water outlet chamber 102, and a water inlet channel 105 communicating with the liquid storage chamber 101 is also provided on the pump housing 10, and a water inlet channel 105 communicating with the liquid storage chamber 101 is connected to the outside of the water inlet channel 105. A water inlet pipe 107 is connected to the water inlet pipe 107 to transport the tooth flushing liquid to the water inlet channel 105 through the water inlet pipe 107, thereby supplying liquid to the liquid storage chamber 101.

[0034] The eardrum 20 is fixedly mounted in the mounting groove 104 and is used to seal the liquid storage chamber 101 to ensure the sealing of the liquid storage chamber 101. In this embodiment, the eardrum 20 is made of EPDM, which makes the eardrum 20 highly elastic and durable. In other embodiments, the eardrum 20 can also be made of other highly elastic and durable materials, which are not limited here.

[0035] The water inlet valve assembly 30 is located within the water inlet channel 105 and is used to close or open the water inlet channel 105. When the water inlet channel 105 is opened, irrigant solution is supplied to the liquid storage chamber 101 through the water inlet pipe 107. The water inlet valve assembly 30 includes a water outlet valve 41 movably located within the water outlet channel 103 and a water outlet valve elastic member for pressing the water outlet valve 41 against the end of the water outlet channel 103 near the liquid storage chamber 101.

[0036] The water outlet valve assembly 40 is disposed within the water outlet passage 103 and is used to close or open the water outlet passage 103, allowing the irrigant in the liquid reservoir 101 to flow through the water outlet passage 103 into the water outlet chamber 102. The water inlet valve assembly 30 includes a water outlet valve 41 movably disposed within the water outlet passage 103 and a water outlet valve elastic member for pressing the water outlet valve 41 against the end of the water outlet passage 103 near the liquid reservoir 101.

[0037] The driving mechanism 50 is located outside the pump housing 10, and one end of it is connected to the eardrum 20. It is used to drive the eardrum 20 to deform so that the capacity of the liquid storage chamber 101 changes, that is, the capacity of the liquid storage chamber 101 becomes larger or smaller, so that the water inlet valve assembly 30 opens the water inlet channel 105 and the water outlet valve assembly 40 closes the water outlet channel 103, or the water inlet valve assembly 30 closes the water inlet channel 105 and the water outlet valve assembly 40 opens the water outlet channel 103.

[0038] It can be understood that during use, when the tympanic membrane 20 is driven to deform by the driving mechanism 50 so that the capacity of the liquid storage chamber 101 increases, the pressure in the liquid storage chamber 101 is less than the pressure in the water inlet pipe 107 connected to the water inlet channel 105, that is, the tooth rinse can flush open the water inlet valve 31 to enter the water inlet channel 105 and enter the liquid storage chamber 101, and at this time the water outlet valve 41 is pressed against the end of the water outlet channel 103 close to the liquid storage chamber 101 under the action of the water outlet valve elastic member, that is, the water outlet valve 41 stably closes the water outlet channel 103, thereby realizing the inflow of water (or liquid) into the liquid storage chamber 101. When the tympanic membrane 20 is driven to deform by the driving mechanism 50 so that the capacity of the liquid storage chamber 101 becomes smaller, the dental irrigant in the liquid storage chamber 101 is compressed, that is, the pressure in the liquid storage chamber 101 is greater than the pressure of the water inlet pipe 107 connected to the water inlet channel 105. At this time, the water inlet valve elastic member automatically resets and presses the water inlet valve 31 against the end of the water inlet channel 105 away from the liquid storage chamber 101, thereby stably closing the water inlet channel 105. At this time, the dental irrigant can flush open the water outlet valve 41, allowing the dental irrigant in the liquid storage chamber 101 to flow into the water outlet channel 103 and then into the water outlet chamber 102, thereby allowing the liquid storage chamber 101 to discharge water, thereby improving the water discharge efficiency and water discharge stability of the dental irrigator.

[0039] Furthermore, the water inlet valve assembly 30 also includes a water inlet valve fixing column 32 fixed in the water inlet channel 105. The water inlet valve fixing column 32 is located at one end of the water inlet channel 105 close to the liquid storage chamber 101. The water inlet valve elastic part includes a water inlet valve spring 33. The water inlet valve spring 33 and the water inlet valve fixing column 32 are both arranged along the length direction of the water inlet channel 105, and one end of the water inlet spring is pressed against the water inlet valve fixing column 32, and the other end is pressed against the water inlet valve 31.

[0040] It can be understood that through the arrangement of the water inlet valve fixing column 32 and the water inlet valve spring 33, when the driving mechanism 50 drives the eardrum 20 to deform and reduce the capacity of the liquid storage chamber 101, the water inlet valve spring 33 can stably press the water inlet valve 31 against the end of the water inlet channel 105 away from the liquid outlet chamber (that is, the connection point between the water inlet channel 105 and the water inlet pipe 107), thereby stably closing the water inlet channel 105.

[0041] Furthermore, the water outlet valve assembly 40 also includes a water outlet valve fixing column 42 fixed in the water outlet channel 103, and the water outlet valve fixing column 42 is located at one end of the water outlet channel 103 away from the liquid storage chamber 101. The water outlet valve elastic part includes a water outlet valve spring 43. The water outlet valve spring 43 and the water outlet valve fixing column 42 are both arranged along the length direction of the water outlet channel 103, and one end of the water outlet valve spring 43 is pressed against the water outlet valve fixing column 42, and the other end is pressed against the water outlet valve 41.

[0042] It can be understood that through the arrangement of the water outlet valve fixing column 42 and the water outlet valve spring 43, when the driving mechanism 50 drives the eardrum 20 to deform and make the capacity of the liquid storage chamber 101 smaller, the water outlet valve spring 43 can stably press the water outlet valve 41 against one end of the water outlet channel 103 close to the liquid storage chamber 101 (that is, the connection point between the water outlet channel 103 and the liquid storage chamber 101), thereby stably closing the water outlet channel 103.

[0043] In addition, the water inlet valve fixing column 32 and the water outlet valve fixing column 42 are respectively integrally formed with the water outlet channel 103 and the water inlet channel 105, and the water inlet valve fixing column 32 is located at the connection point between the water inlet channel 105 and the liquid storage chamber 101, and the water outlet valve fixing column 42 is located at the connection point between the water outlet channel 103 and the water outlet chamber 102.

[0044] Furthermore, the pump casing 10 includes a first shell 11 and a second shell 12 connected to each other, the liquid storage chamber 101 and the water outlet chamber 102 are respectively located in the first shell 11 and the second shell 12, the first shell 11 and the second shell 12 cooperate to form a water outlet channel 103, and a sealing ring 106 is also provided between the first shell 11 and the second shell 12.

[0045] By configuring the pump housing 10 as a first housing 11 and a second housing 12, production costs can be reduced and the assembly process can be simplified. At the same time, by configuring the sealing ring 106, the gap between the first housing 11 and the second housing 12 can be sealed, thereby effectively avoiding liquid leakage.

[0046] Furthermore, the diaphragm pump for the oral irrigator provided in this embodiment also includes a shell 60, the interior of the shell 60 is provided with a accommodating chamber with a lateral opening, the first shell 11 is located in the accommodating chamber, the second shell 12 at least partially extends out of the accommodating chamber from the lateral opening of the shell 60, and the driving mechanism 50 is accommodated in the accommodating chamber.

[0047] It can be understood that by providing the outer shell 60 , the first shell 11 , the second shell 12 and the driving mechanism 50 can be protected, thereby increasing the service life of the entire oral irrigator diaphragm pump.

[0048] Furthermore, the driving mechanism 50 includes a turntable gear 51 that is rotatably disposed in the accommodating cavity, an eccentric wheel 52 that is coaxially disposed with the turntable gear 51 and fixedly connected to the turntable gear 51, a positioning shaft 53 for positioning the turntable gear 51 and the eccentric wheel 52, a connecting sleeve 54 that is sleeved on the eccentric wheel 52, a connecting shaft 55 that is disposed on the connecting sleeve 54 and fixedly connected to the eardrum 20, and a driving member for driving the turntable gear 51 to rotate so that the connecting sleeve 54 performs reciprocating motion relative to the accommodating cavity, wherein The turntable gear 51 and the eccentric wheel 52 are rotated in the accommodating cavity through the positioning shaft 53. The center of the turntable gear 51 and the eccentric point of the eccentric wheel 52 are both located on the positioning shaft 53. A groove 541 for the positioning shaft 53 to pass through is opened on the connecting sleeve 54. Both ends of the positioning shaft 53 are fixedly connected to the upper and lower sides of the shell 60. The eccentric wheel 52 can rotate relative to the connecting sleeve 54, so that when the eccentric wheel 52 rotates, it can drive the connecting sleeve 54 and the connecting shaft 55 to reciprocate.

[0049] It can be understood that the turntable gear 51 and the eccentric wheel 52 are positioned by the positioning shaft 53, so that the turntable gear 51 and the eccentric wheel 52 can rotate around the positioning shaft 53. Since the movement trajectory of the eccentric wheel 52 is elliptical, the eccentric wheel 52 will drive the connecting sleeve 54 to move back and forth relative to the accommodating chamber during movement, and then drive the connecting shaft 55 to move back and forth, so that the eardrum 20 can be stably deformed under the action of the connecting shaft 55 and change the capacity of the liquid storage chamber 101.

[0050] Furthermore, the driving member includes a driving motor 56 fixedly arranged in the accommodating chamber and a transmission gear 57 mounted on the output shaft of the driving motor 56. The driving motor 56 is located at one end of the accommodating chamber away from the liquid storage chamber 101. The output shaft of the driving motor 56 extends to the turntable gear 51. The transmission gear 57 is fixedly mounted on the output shaft of the driving motor 56, and the transmission gear 57 meshes with the turntable gear 51 to drive the turntable gear 51 to rotate.

[0051] It can be understood that the drive motor 56 drives the transmission gear 57 to rotate, which drives the turntable gear 51 to rotate, causing the eccentric wheel 52 to rotate, thereby driving the connecting sleeve 54 and the connecting shaft 55 to reciprocate relative to the accommodating cavity, thereby enabling the eardrum 20 to continuously deform and change the capacity of the liquid storage cavity 101, so as to realize the water inflow and outflow of the liquid storage cavity 101.

[0052] Furthermore, the outer cover of the eccentric wheel 52 is provided with a protective cover 58 for preventing direct contact and friction between the eccentric wheel 52 and the connecting sleeve 54. By providing the protective cover 58, the wear of the eccentric wheel 52 caused by friction between the eccentric wheel 52 and the connecting sleeve 54 can be avoided, thereby extending the service life of the eccentric wheel 52.

[0053] In addition, this embodiment also provides a water flosser, which includes the water flosser diaphragm pump as described above. The specific structure of the water flosser diaphragm pump refers to the above embodiment. Since this water flosser adopts all the technical solutions of the above embodiment, it at least has the beneficial effects brought by the technical solutions of the above embodiment, which will not be described one by one here.

[0054] The above is only used to illustrate the technical solution of the present invention and is not intended to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in this field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A diaphragm pump for a water flosser, characterized in that: include: A pump housing (10) is provided with a liquid storage chamber (101) and a water outlet chamber (102) therein, wherein the water outlet chamber (102) and the liquid storage chamber (101) are communicated with each other via a water outlet passage (103), an end of the pump housing (100) away from the water outlet chamber (102) is provided with a mounting groove (104) communicated with the liquid storage chamber (101), and the pump housing (100) is further provided with a water inlet passage (105) communicated with the liquid storage chamber (101), and the water inlet passage (105) is communicated with a water inlet pipe (107); A tympanic membrane (20), disposed in the mounting groove (104) and used to seal the liquid storage cavity (101); A water inlet valve assembly (30) is provided in the water inlet channel (105) and is used to close or open the water inlet channel (105) to supply toothwash solution to the liquid storage chamber (101), comprising a water inlet valve (31) provided in the water inlet channel (105) and a water inlet valve elastic member used to press the water inlet valve (31) against an end of the water inlet channel (105) away from the liquid storage chamber (101); a water outlet valve assembly (40) disposed in the water outlet channel (103) and used for closing or opening the water outlet channel (103) so that the toothwash solution in the liquid storage chamber (101) can enter the water outlet chamber (102) through the water outlet channel (103), comprising a water outlet valve (41) disposed in the water outlet channel (103) and a water outlet valve elastic member for pressing the water outlet valve (41) against one end of the water outlet channel (103) close to the liquid storage chamber (101); and A driving mechanism (50) is located outside the pump housing (10), one end of which is connected to the eardrum (20) and is used to drive the eardrum (20) to deform so that the capacity of the liquid storage chamber (101) changes, so that the water inlet valve assembly (30) opens the water inlet channel (105) and the water outlet valve assembly (40) closes the water outlet channel (103), or so that the water inlet valve assembly (30) closes the water inlet channel (105) and the water outlet valve assembly (40) opens the water outlet channel (103).

2. A diaphragm pump for oral irrigator according to claim 1, characterized in that: The water inlet valve assembly (30) further comprises a water inlet valve fixing column (32) fixedly arranged in the water inlet channel (105), the water inlet valve fixing column (32) being located at one end of the water inlet channel (105) close to the liquid storage chamber (101), the water inlet valve elastic member comprising a water inlet valve spring (33), the water inlet valve spring (33) and the water inlet valve fixing column (32) being both arranged along the length direction of the water inlet channel (105), and one end of the water inlet valve spring (33) being pressed against the water inlet valve fixing column (32), and the other end being pressed against the water inlet valve (31).

3. A diaphragm pump for oral irrigator according to claim 2, characterized in that: The water outlet valve assembly (40) further comprises a water outlet valve fixing column (42) fixedly arranged in the water outlet channel (103), wherein the water outlet valve fixing column (42) is located at one end of the water outlet channel (103) away from the liquid storage chamber (101), and the water outlet valve elastic member comprises a water outlet valve spring (43), wherein the water outlet valve spring (43) and the water outlet valve fixing column (42) are both arranged along the length direction of the water outlet channel (103), and one end of the water outlet valve spring (43) is pressed against the water outlet valve fixing column (42), and the other end is pressed against the water outlet valve (41).

4. A diaphragm pump for oral irrigator according to claim 3, characterized in that: The water inlet valve fixing column (32) and the water outlet valve fixing column (42) are integrally formed with the water outlet channel (103) and the water inlet channel (105), respectively. The water inlet valve fixing column (32) is located at the connection between the water inlet channel (105) and the liquid storage chamber (101), and the water outlet valve fixing column (42) is located at the connection between the water outlet channel (103) and the water outlet chamber (102).

5. The diaphragm pump for oral irrigator according to claim 1, characterized in that: The pump housing (10) comprises a first housing (11) and a second housing (12) connected to each other; the liquid storage chamber (101) and the water outlet chamber (102) are respectively located in the first housing (11) and the second housing (12); the first housing (11) and the second housing (12) cooperate to form a water outlet channel (103); and a sealing ring (106) is further provided between the first housing (11) and the second housing (12).

6. The diaphragm pump for oral irrigator according to claim 5, characterized in that: The invention also includes a shell (60), wherein the interior of the shell (60) is provided with a housing cavity having a lateral opening, the first shell (11) is located in the housing cavity, the second shell (12) at least partially extends out of the housing cavity from the lateral opening of the shell (60), and the driving mechanism (50) is accommodated in the housing cavity.

7. The diaphragm pump for oral irrigator according to claim 6, characterized in that: The driving mechanism (50) comprises a turntable gear (51) rotatably arranged in the accommodating cavity, an eccentric wheel (52) coaxially arranged with the turntable gear (51) and fixedly connected to the turntable gear (51), a positioning shaft (53) for positioning the turntable gear (51) and the eccentric wheel (52), a connecting sleeve (54) sleeved on the eccentric wheel (52), a connecting shaft (55) arranged on the connecting sleeve (54) and fixedly connected to the eardrum (20), and a driving member for driving the turntable gear (51) to rotate. The turntable gear (51) and the eccentric wheel (52) are rotatably arranged in the accommodating cavity through the positioning shaft (53). The connecting sleeve (54) is provided with a groove (541) for the positioning shaft (53) to pass through. The eccentric wheel (52) can rotate relative to the connecting sleeve (54), so that when the eccentric wheel (52) rotates, it can drive the connecting sleeve (54) and the connecting shaft (55) to perform reciprocating motion.

8. The diaphragm pump for oral irrigator according to claim 7, characterized in that: The driving member comprises a driving motor (56) fixedly arranged in the accommodating chamber and a transmission gear (57) sleeved on the output shaft of the driving motor (56); the driving motor (56) is located at one end of the accommodating chamber away from the liquid storage chamber (101); the output shaft of the driving motor (56) extends to the turntable gear (51); the transmission gear (57) meshes with the turntable gear (51) to drive the turntable gear (51) to rotate.

9. The diaphragm pump for oral irrigator according to claim 7, characterized in that: The outer shell of the eccentric wheel (52) is provided with a protective sleeve (58) for preventing the eccentric wheel (52) from directly contacting and rubbing with the connecting sleeve (54).

10. A water flosser, characterized in that: It includes the diaphragm pump of the oral irrigator as described in any one of claims 1-9.

Images