Water pump and oral care equipment

Abstract

The water pump comprises a pump body, a piston, a power device and an adjusting piece, the pump body is provided with a main pump cavity, a movable cavity, a water outlet, a water inlet and a water passing opening, the water passing opening is used for being communicated with a water tank, and the piston is movably connected to the movable cavity and divides the movable cavity into a first cavity and a second cavity. The first cavity is communicated with the main pump cavity, the second cavity is communicated with the water passing opening, the piston is provided with a first through hole, the two ends of the first through hole are communicated with the first cavity and the second cavity respectively, the power device is connected to the piston, and the adjusting piece is movably arranged in the first through hole to block or open the first through hole. By means of the scheme, in the process that the piston moves from the initial position to the first middle position, the adjusting piece opens the first through hole within at least part of time, part of liquid in the main pump cavity can flow back to the water tank from the water through opening, and when the water pump is applied to the oral care equipment, the water saving effect of the oral care equipment can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of oral cleaning tools, in particular to a water pump and an oral care device. Background Art

[0002] An oral care device is a tool for cleaning the oral cavity, mainly using the way of pulsed water flow impact to realize the functions of cleaning teeth and dental floss.

[0003] An oral care device usually includes a water pump and a water tank. Through the reciprocating movement of the piston of the water pump, the liquid in the water tank can be pumped out to the main pump chamber of the water pump, and then the liquid in the main pump chamber can be pumped out in a cyclic action, so that the oral care device can eject pulsed water flow. When the oral care device is working, due to the relatively fast flow rate of the liquid ejected by the oral care device and the limitation of the volume of the water tank, even when the water tank is filled with liquid, it is impossible to complete the cleaning of the entire oral cavity, causing inconvenience to users. Summary of the Utility Model

[0004] Embodiments of the utility model disclose a water pump and an oral care device, aiming to improve the water-saving effect of the oral care device.

[0005] To achieve the above object, in a first aspect, the utility model discloses a water pump, which is applied to an oral care device. The oral care device includes a water tank. The water pump includes:

[0006] A pump body, which is provided with a main pump chamber, a movable chamber, a water outlet, a water inlet and a water passage port. The main pump chamber is communicated with the movable chamber, the water outlet and the water inlet. The water inlet and the water passage port are used for communicating with the water tank;

[0007] A piston, which is movably connected to the movable chamber. The piston is used to divide the movable chamber into a first chamber and a second chamber located on two opposite sides of the piston. The first chamber is communicated with the main pump chamber, and the second chamber is communicated with the water passage port. The piston is provided with a first through hole penetrating itself along a first direction. Two ends of the first through hole are respectively communicated with the first chamber and the second chamber; and

[0008] An adjusting member, which is movably arranged in the first through hole. The adjusting member is used to move relative to the first through hole to block the first through hole, so that the first chamber and the second chamber are communicated, and is used to move relative to the first through hole to open the first through hole, so that the first chamber and the second chamber are not communicated.

[0009] By adopting the solution of the first aspect of the present application, by providing an adjusting member, during the process of the piston moving relative to the movable cavity in the first direction, the adjusting member can open or close the first through hole, thereby adjusting the communication state between the first chamber and the second chamber, that is, making the first chamber communicate with the second chamber or making the first chamber not communicate with the second chamber. When the pressure in the main pump chamber is small, the adjusting member can be made to open the first through hole, and part of the liquid in the main pump chamber will flow back to the water tank from the water inlet, thereby reducing the liquid pumped out from the main pump chamber when the pressure in the main pump chamber is insufficient. When the pressure in the main pump chamber is large, the adjusting member can be made to close the first through hole, and all the liquid in the main pump chamber will be pumped out. When the water pump is applied to an oral care device, it can achieve the water-saving effect of the oral care device and ensure the cleaning effect of the oral care device on the oral cavity.

[0010] As an optional implementation manner, in the embodiment of the first aspect of the present utility model, both ends of the first through hole are a first opening and a second opening respectively. The first opening communicates with the first chamber, and the second opening communicates with the second chamber. The adjusting member includes a first blocking portion, a connecting portion, and a second blocking portion. The first blocking portion and the second blocking portion are respectively disposed at both ends of the connecting portion in the first direction. The connecting portion is movably disposed in the first through hole and is used to move relative to the first through hole so that the first blocking portion blocks the first opening, and is used to move relative to the first through hole so that the second blocking portion blocks the second opening, and is used to move relative to the first through hole so that the first opening and the second opening are opened.

[0011] By adopting such an implementation manner, by moving the connecting portion, one of the first blocking portion and the second blocking portion can block the first through hole, or the first through hole can be opened, which is convenient for adjusting the blocking or opening state of the first through hole.

[0012] As an optional implementation manner, in the embodiment of the first aspect of the present utility model, the water pump further includes an elastic member. Both ends of the elastic member are respectively connected to the first blocking portion and the piston, and the elastic member is used to provide an elastic force.

[0013] By adopting such an implementation manner, under the action of the elastic force of the elastic member, when the hydraulic pressure and resistance received by the adjusting member are small, the second blocking portion can block the second opening. When the hydraulic pressure and resistance received by the adjusting member are moderate, the elastic member is compressed by the force, making the first blocking portion open the first opening and the second blocking portion open the second opening. When the hydraulic pressure and resistance received by the adjusting member are large, the elastic member is further compressed by the force, making the first blocking portion block the first opening, thereby realizing the opening or closing of the first through hole by the adjusting member.

[0014] As an alternative embodiment, in the embodiment of the first aspect of the present utility model, in a plane perpendicular to the first direction, the area of the largest cross-section of the first blocking portion is greater than the area of the largest cross-section of the second blocking portion.

[0015] With such an embodiment, on the one hand, the area of the largest cross-section of the first blocking portion is relatively large, and the hydraulic pressure and resistance received by the adjusting member during the movement of the piston are relatively large, which can meet the state that the elastic force of the elastic member is balanced with, greater than, or less than the hydraulic pressure and resistance during the movement of the piston. On the other hand, the area of the largest cross-section of the second blocking portion is small, which facilitates inserting the second blocking portion into the first through hole during the assembly of the adjusting member and the piston, so as to place the connecting portion into the first through hole.

[0016] As an alternative embodiment, in the embodiment of the first aspect of the present utility model, the surface of the first blocking portion facing away from the piston is configured as a convex surface, and the protruding direction of the convex surface is the same as the first direction.

[0017] With such an embodiment, during the movement of the piston along the first direction, the first blocking portion will receive a resistance opposite to the first direction. By configuring the surface of the first blocking portion facing away from the piston as a convex surface, the resistance received by the first blocking portion can be made smaller and more uniform, which can improve the smoothness of the movement of the first blocking portion.

[0018] As an alternative embodiment, in the embodiment of the first aspect of the present utility model, the water pump further includes a first sealing member, the first sealing member is sleeved between the second blocking portion and the connecting portion, and the connecting portion is used to move relative to the first through hole so that the second blocking portion drives the first sealing member to block the second opening.

[0019] With such an embodiment, when the connecting portion moves relative to the first through hole along the first direction until the first sealing member and the second blocking portion jointly block the second opening of the first through hole, the first sealing member can improve the sealing effect when blocking the second opening, reduce the situation of liquid and gas flowing through the gap between the second opening and the second blocking portion, and at the same time, the first sealing member can play a buffering role for the piston and the second blocking portion, avoiding direct collision between the piston and the second blocking portion when the connecting portion moves relative to the first through hole, and improving the service life of the piston and the adjusting member.

[0020] As an alternative embodiment, in the embodiment of the first aspect of the present utility model, the water pump includes a second sealing member, the second sealing member is connected between the piston and the pump body, and the second sealing member is used to hermetically isolate the first chamber and the second chamber.

[0021] In such an implementation manner, by providing a second seal, the second seal can seal the gap between the piston and the wall surface of the movable chamber, that is, isolate the first chamber from the second chamber, and reduce the occurrence of liquid flowing through the gap between the piston and the wall surface of the movable chamber.

[0022] As an alternative implementation manner, in the embodiment of the first aspect of the present utility model, the second seal is disposed in the first chamber, and a second through hole is provided on the second seal. The second through hole communicates the first chamber with the first through hole. The adjusting member includes a first blocking portion and a connecting portion. The first blocking portion is connected to the connecting portion and is located on the side of the second seal away from the piston. The connecting portion is movably disposed in the first through hole and the second through hole. The connecting portion is configured to move relative to the first through hole so that the first blocking portion blocks the second through hole, and is also configured to move relative to the first through hole so that the first blocking portion opens the second through hole.

[0023] In such an implementation manner, the connecting portion can move relative to the first through hole in a direction opposite to the first direction until the first blocking portion blocks the second through hole of the second seal, so that the second seal and the first blocking portion jointly block the first opening of the first through hole. Compared with the first blocking portion directly blocking the first opening, by the first blocking portion blocking the second through hole of the second seal to achieve the blocking of the first opening, the sealing effect when blocking the first opening can be improved, and the flow of liquid and gas through the gap between the first opening and the first blocking portion can be reduced. At the same time, the second seal can play a buffering role between the piston and the first blocking portion, avoiding direct collision between the piston and the first blocking portion when the connecting portion moves relative to the first through hole, and improving the service life of the piston and the adjusting member. In addition, the second seal also plays a role in sealing the gap between the piston and the pump body at the same time, realizing the reuse of the structure, making the structure of the water pump relatively simple, and reducing the assembly difficulty of the water pump.

[0024] As an alternative implementation manner, in the embodiment of the first aspect of the present utility model, the surface of the first blocking portion facing the piston is configured as a concave surface, and the orientation of the concave surface is the same as the first direction, so that the first blocking portion forms a engaging portion. A slot is provided on the side of the second seal facing the first blocking portion. The slot is arranged around the axial direction of the first through hole, and the slot is used for engaging connection with the engaging portion.

[0025] By adopting such an embodiment, the connecting portion can be moved relative to the first through hole in a direction opposite to the first direction until the engaging portion is engaged with the slot on the second sealing member. The engaging portion and the slot can increase the contact area between the first blocking portion and the second sealing member, thereby improving the sealing effect between the first blocking portion and the second sealing member. At the same time, the slot can also play a positioning role for the engaging portion, so that during the movement of the piston, after each time the slot and the engaging portion abut, the adjusting member and the elastic member can be reset, thereby improving the stability of the movement of the adjusting member and the elastic member.

[0026] As an optional implementation, in an embodiment of the first aspect of the utility model, the water pump further includes a buffer component, the buffer component is fixedly disposed in the movable chamber, the buffer component is sleeved on the piston, and the piston is movably connected to the buffer component.

[0027] By adopting such an embodiment, a buffer member is sleeved on the piston, that is, the buffer member is between the piston and the active chamber. On the one hand, the buffer member can play a buffering role for the movement of the piston relative to the active chamber, avoid direct contact between the piston and the active chamber, and reduce the wear of the piston and the active chamber. On the other hand, the buffer member can seal the gap between the piston and the wall of the active chamber, that is, isolate the first chamber and the second chamber, and reduce the phenomenon of liquid flowing through the gap between the piston and the wall of the active chamber.

[0028] As an optional embodiment, in an embodiment of the first aspect of the utility model, the pump body includes a main shell and a first sub-shell, the main shell is provided with the main pump chamber, the active chamber, the water outlet, the water inlet and the water port, the active chamber and the main pump chamber are arranged in sequence along the first direction, the first sub-shell is arranged on one side of the main shell in a direction perpendicular to the first direction, the first sub-shell is provided with a water inlet channel, one end of the water inlet channel is connected to the water inlet, the other end of the water inlet channel is used to connect to the water tank, and the water port is connected to the water inlet channel.

[0029] In this embodiment, the first sub-shell is provided with a water inlet channel, and the water inlet can be connected to the water tank through the water inlet channel, so that the water tank does not need to be arranged near the water inlet, and the position of the water tank can be flexibly arranged when the water pump is used in oral care equipment. In addition, since a large number of holes and grooves need to be opened on the pump body, by dividing the pump body into a main shell and a first sub-shell, the number of holes and grooves required to be arranged on the main shell can be reduced, and the difficulty of processing the pump body can be reduced.

[0030] As an optional implementation, in an embodiment of the first aspect of the utility model, the movable chamber has an open end on a side away from the main pump chamber, and the pump body further includes a second auxiliary shell, and the second auxiliary shell covers the open end;

[0031] The second auxiliary housing is provided with a water passage, and the water passage communicates with the water inlet and the water inlet passage.

[0032] With such an implementation manner, the second auxiliary housing is provided with a water passage, and the water inlet communicates with the water inlet passage through the water passage. The liquid can flow from the water inlet to the water passage, then from the water passage to the water inlet passage, and then back to the water tank from the water inlet passage. In addition, by separately arranging the pump body into a main housing, a first auxiliary housing and a second auxiliary housing, it is convenient to form a main pump chamber and a movable chamber on the main body. Then, by covering the open end of the movable chamber with the second auxiliary housing, the main pump chamber and the movable chamber located inside the pump body can be formed, which can further reduce the processing difficulty of the pump body.

[0033] As an alternative implementation manner, in the embodiment of the first aspect of the present invention, the second auxiliary housing is provided with a third through hole, the third through hole communicates with the second chamber, the water pump further includes a power device, the power device passes through the third through hole, and the power device is connected to the piston, and the power device is used to drive the piston to move relative to the movable chamber along the first direction or the second direction opposite to the first direction.

[0034] With such an implementation manner, the third through hole provided on the second auxiliary housing enables the power device to pass through the third through hole and realize the connection with the piston. By providing the power device, the power device can provide power for the movement of the piston in the first direction and the second direction.

[0035] As an alternative implementation manner, in the embodiment of the first aspect of the present invention, the water inlet is provided with a one-way valve, and the one-way valve is used to make the liquid flow unidirectionally from the water tank to the main pump chamber.

[0036] With such an implementation manner, the one-way valve can prevent the liquid from flowing back from the main pump chamber to the water tank, so as to ensure that the liquid can be pumped out of the main pump chamber. When the water pump is applied to an oral care device, it can ensure the cleaning effect of the oral care device on the oral cavity.

[0037] In a second aspect, the present invention discloses an oral care device, and the oral care device includes a water tank and the water pump as described in the first aspect above, and the water tank communicates with the water inlet and the water inlet.

[0038] Adopting the solution of the second aspect of the present application, since the oral care device is provided with the water pump disclosed in the first aspect of the present application, and the water pump is provided with an adjusting member, during the process of the piston moving relative to the movable cavity in the first direction, the adjusting member can open or close the first through hole, thereby adjusting the communication state between the first chamber and the second chamber, that is, making the first chamber communicate with the second chamber or making the first chamber not communicate with the second chamber. When the pressure in the main pump chamber is relatively small, the adjusting member can be made to open the first through hole, and part of the liquid in the main pump chamber will flow back to the water tank from the water inlet, thereby reducing the liquid pumped out from the main pump chamber when the pressure in the main pump chamber is insufficient. When the pressure in the main pump chamber is relatively large, the adjusting member can be made to close the first through hole, and all the liquid in the main pump chamber will be pumped out. When the water pump is applied to the oral care device, it can not only achieve the water-saving effect of the oral care device, but also ensure the cleaning effect of the oral care device on the oral cavity. Description of the Drawings

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0040] Figure 1 is a schematic structural diagram of the water pump disclosed in the first aspect of the embodiment of the present application;

[0041] Figure 2 is Figure 1 a cross-sectional view of the water pump (the piston is between the initial position and the second intermediate position) in the A-A direction;

[0042] Figure 3 is Figure 1 a cross-sectional view of the water pump (the piston is between the second intermediate position and the first intermediate position) in the A-A direction;

[0043] Figure 4 is Figure 1 a cross-sectional view of the water pump (the piston is between the first intermediate position and the end position) in the A-A direction;

[0044] Figure 5 is Figure 1 a cross-sectional view of the water pump (hiding the pump body and the power device) in the A-A direction;

[0045] Figure 6 is a schematic structural diagram of the oral care device disclosed in the second aspect of the embodiment of the present application.

[0046] Icons: 1. Water pump; 10. Pump body; 100. Main housing; 101. First auxiliary housing; 1010. Water inlet channel; 102. Second auxiliary housing; 1020. Water passage; 1021. Third through hole; 103. Main pump chamber; 104. Moving chamber; 1040. First chamber; 1041. Second chamber; 1042. Open end; 105. Water outlet; 106. Water inlet; 107. Water through hole; 11. Piston; 110. First part; 1100. Protrusion; 111. Second part; 112. First through hole; 1120. First opening; 1121. Second opening; 12. Adjusting member; 120. First blocking part; 1200. Engaging part; 121. Connecting part; 122. Second blocking part; 13. Elastic member; 14. First sealing member; 15. Second sealing member; 150. Second through hole; 151. Depressed part; 152. Card slot; 16. Buffer member; 17. Power device; 2. Oral care device; 20. Water tank; X. First direction; Y. Second direction. Detailed implementation

[0047] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0048] Next, the technical solutions of the present invention will be further described in conjunction with the embodiments and the accompanying drawings.

[0049] Please refer to Figures 1 to 5 , in the first aspect of the embodiment of the present invention, a water pump 1 is provided. The water pump 1 is applied to an oral care device. In a specific implementation, the oral care device is a dental irrigator. It can be understood that the oral care device can also be an electric toothbrush with a rinsing effect, or other oral health care devices with a rinsing function.

[0050] In an alternative embodiment, the oral care device is a dental irrigator. The dental irrigator includes a water tank. The water pump 1 includes a pump body 10, a piston 11 and an adjusting member 12. The pump body 10 is provided with a main pump chamber 103, a movable chamber 104, a water outlet 105, a water inlet 106 and a water passage 107. The main pump chamber 103 communicates with the movable chamber 104, the water outlet 105 and the water inlet 106. The water inlet 106 and the water passage 107 are used to communicate with the water tank. The piston 11 is movably connected to the movable chamber 104. The piston 11 is used to divide the movable chamber 104 into a first chamber 1040 and a second chamber 1041 on two opposite sides of the piston 11. The first chamber 1040 communicates with the main pump chamber 103, and the second chamber 1041 communicates with the water passage 107. The piston 11 is provided with a first through hole 112 that penetrates itself along a first direction X. The two ends of the first through hole 112 communicate with the first chamber 1040 and the second chamber 1041 respectively. The adjusting member 12 is movably disposed in the first through hole 112. The adjusting member 12 is used to move relative to the first through hole 112 to block the first through hole 112, so that the first chamber 1040 communicates with the second chamber 1041, and is used to move relative to the first through hole 112 to open the first through hole 112, so that the first chamber 1040 does not communicate with the second chamber 1041.

[0051] Wherein, the piston 11 moves relative to the movable chamber 104 along the first direction X from an initial position to a terminal position, and there is a first intermediate position between the initial position and the terminal position; during the process of the piston 11 moving from the initial position to the first intermediate position, the adjusting member 12 opens the first through hole 112 at least for some time; during the process of the piston 11 moving from the first intermediate position to the terminal position, the adjusting member 12 blocks the first through hole 112; the first direction X is the direction of the side of the piston 11 facing the first chamber 1040.

[0052] The water pump 1 provided in the first aspect of the embodiment of the present utility model, by providing an adjusting member 12, during the process that the piston 11 moves relative to the movable cavity 104 along the first direction X from the initial position to the end position (i.e., the piston 11 compresses the main pump cavity 103), the pressure in the main pump cavity 103 gradually increases. There is a first intermediate position between the initial position and the end position. During the process that the piston 11 moves from the initial position to the first intermediate position, at this time the pressure in the main pump cavity 103 is relatively small, and the adjusting member 12 will open the first through hole 112 at least for some time, so that the first chamber 1040 is communicated with the second chamber 1041, thereby enabling the main pump cavity 103 to be communicated with the water outlet 107. Part of the liquid in the main pump cavity 103 will flow back to the water tank from the water outlet 107, thus reducing the liquid pumped out from the main pump cavity 103 when the pressure in the main pump cavity 103 is insufficient. Moreover, during the process that the piston 11 moves from the first intermediate position to the end position, at this time the pressure in the main pump cavity 103 is relatively large, and the adjusting member 12 will block the first through hole 112, so that the first chamber 1040 is not communicated with the second chamber 1041, thereby enabling the main pump cavity 103 to be not communicated with the water outlet 107, and all the liquid in the main pump cavity 103 will be pumped out. When the water pump 1 is applied to an oral care device, it can not only achieve the water-saving effect of the oral care device, but also ensure the cleaning effect of the oral care device on the oral cavity.

[0053] Optionally, the specific way that the adjusting member 12 is movably arranged in the first through hole 112 can be that the adjusting member 12 is movably arranged in the first through hole 112. For example, the adjusting member 12 can include a blocking portion and a connecting portion 121 connected to each other. By moving the connecting portion 121 relative to the first through hole 112, the blocking portion blocks or opens the first through hole 112. Or, the adjusting member 12 can be rotatably arranged in the first through hole 112. For example, the adjusting member 12 can be a rotating door, and by rotating the adjusting member 12 relative to the first through hole 112, the first through hole 112 is blocked or opened. It only needs to ensure that the adjusting member 12 can achieve the function of blocking or opening the first through hole 112, and can be specifically selected according to the actual situation, and no specific limitation is made in this embodiment.

[0054] In this embodiment, the piston 11 being at the initial position relative to the movable cavity 104 means that the piston 11 is at the minimum stroke relative to the movable cavity 104 in the first direction X, that is, the position where the piston 11 is farthest from the main pump cavity 103 within the stroke range. The piston 11 being at the end position relative to the movable cavity 104 means that the piston 11 is at the maximum stroke relative to the movable cavity 104 in the first direction X, that is, the position where the piston 11 is closest to the main pump cavity 103 within the stroke range.

[0055] Please refer to Figure 5, in some embodiments, two ends of the first through hole 112 are a first opening 1120 and a second opening 1121 respectively. The first opening 1120 communicates with the first chamber 1040, and the second opening 1121 communicates with the second chamber 1041. The adjusting member 12 includes a first blocking portion 120, a connecting portion 121, and a second blocking portion 122. The first blocking portion 120 and the second blocking portion 122 are respectively disposed at two ends of the connecting portion 121 in the first direction X. The connecting portion 121 is movably disposed in the first through hole 112. The connecting portion 121 is configured to move relative to the first through hole 112 so that the first blocking portion 120 blocks the first opening 1120, and is configured to move relative to the first through hole 112 so that the second blocking portion 122 blocks the second opening 1121, and is configured to move relative to the first through hole 112 so that the first opening 1120 and the second opening 1121 are opened.

[0056] In this way, when one of the first opening 1120 and the second opening 1121 of the first through hole 112 is blocked, the first through hole 112 is in a blocked state. At this time, the first chamber 1040 and the second chamber 1041 are not communicated. When both the first opening 1120 and the second opening 1121 are opened, the first through hole 112 is in an opened state, and the first chamber 1040 and the second chamber 1041 are communicated. By movably disposing the connecting portion 121 relative to the first through hole 112, the connecting portion 121 can move relative to the first through hole 112 to make the first blocking portion 120 abut against the first opening 1120. At this time, the first blocking portion 120 blocks the first opening 1120, and at the same time, the second blocking portion 122 disengages from the second opening 1121, that is, the second opening 1121 is opened. The connecting portion 121 can also move relative to the first through hole 112 to make the second blocking portion 122 abut against the second opening 1121. At this time, the second blocking portion 122 blocks the second opening 1121, and at the same time, the first blocking portion 120 disengages from the first opening 1120, that is, the first opening 1120 is opened. The connecting portion 121 can further move relative to the first through hole 112 to make the first blocking portion 120 disengage from the first opening 1120 and the second blocking portion 122 disengage from the second opening 1121, that is, the first opening 1120 and the second opening 1121 are opened simultaneously. With such a design of the adjusting member 12, by moving the connecting portion 121, one of the first blocking portion 120 and the second blocking portion 122 can block the first through hole 112, or the first through hole 112 can be opened, which is convenient for adjusting the blocked or opened state of the first through hole 112.

[0057] In this embodiment, in the direction in which the connecting portion 121 moves relative to the first through hole 112, the length of the connecting portion 121 can be greater than the length of the first through hole 112. Both the first blocking portion 120 and the second blocking portion 122 are located outside the first through hole 112, and the diameters of both the first blocking portion 120 and the second blocking portion 122 are greater than the diameter of the first through hole 112.

[0058] Optionally, the connecting portion 121 may be a rod-shaped structure, a square column structure, etc., and can be specifically selected according to the actual situation, and is not specifically limited in this embodiment.

[0059] Optionally, the first blocking portion 120 and the second blocking portion 122 may be a block structure, a plate structure, etc., and can be specifically selected according to the actual situation, and is not specifically limited in this embodiment.

[0060] In some embodiments, the water pump 1 further includes an elastic member 13. The two ends of the elastic member 13 are respectively connected to the first blocking portion 120 and the piston 11. The elastic member 13 is used to provide an elastic force; there is a second intermediate position between the initial position and the first intermediate position. During the process of the piston 11 moving from the initial position to the second intermediate position, the second blocking portion 122 blocks the second opening 1121. During the process of the piston 11 moving from the second intermediate position to the first intermediate position, the first opening 1120 and the second opening 1121 are opened; during the process of the piston 11 moving from the first intermediate position to the end position, the first blocking portion 120 blocks the first opening 1120.

[0061] In this way, by setting the elastic member 13, during the process of the piston 11 moving from the initial position to the second intermediate position, at this time, the hydraulic pressure and resistance received by the adjusting member 12 are small, and the elastic force of the elastic member 13 causes the second sealing portion 122 to seal the second opening 1121, that is, the first through hole 112 is sealed, so that the first chamber 1040 and the second chamber 1041 are not communicated. This process is the initial stage of the piston 11 compressing the main pump chamber 103, and almost no liquid will be pumped out from the main pump chamber 103. At this time, making the first chamber 1040 and the second chamber 1041 not communicated will neither waste liquid nor enable the pressure of the main pump chamber 103 to rise rapidly; during the process of the piston 11 moving from the second intermediate position to the first intermediate position, at this time, the hydraulic pressure and resistance received by the adjusting member 12 are moderate, and the elastic member 13 is compressed by force, so that the first sealing portion 120 opens the first opening 1120 and the second sealing portion 122 opens the second opening 1121, that is, the first through hole 112 is opened, so that the first chamber 1040 and the second chamber 1041 are communicated. This process is the intermediate stage of the piston 11 compressing the main pump chamber 103, and the liquid in the main pump chamber 103 will be pumped out from the main pump chamber 103. At this time, the communication between the first chamber 1040 and the second chamber 1041 will cause part of the liquid in the main pump chamber 103 to flow back to the water tank from the water passing port 107, thereby reducing the liquid pumped out from the main pump chamber 103 when the pressure in the main pump chamber 103 is insufficient. When the water pump 1 is applied to an oral care device, the water-saving effect of the oral care device can be achieved; during the process of the piston 11 moving from the first intermediate position to the end position, at this time, the hydraulic pressure and resistance received by the adjusting member 12 are large, and the elastic member 13 is further compressed by force, so that the first sealing portion 120 seals the first opening 1120, that is, the first through hole 112 is sealed, so that the first chamber 1040 and the second chamber 1041 are not communicated. This process is the final stage of the piston 11 compressing the main pump chamber 103, and the hydraulic pressure in the main pump chamber 103 is large. At this time, making the first chamber 1040 and the second chamber 1041 not communicated enables all the liquid in the main pump chamber 103 to be pumped out from the main pump chamber 103 and will not flow back to the water tank from the water passing port 107, which can ensure the flow rate of the liquid pumped out from the main pump chamber 103. When the water pump 1 is applied to an oral care device, the cleaning effect of the oral care device on the oral cavity can be ensured.

[0062] Optionally, the elastic member 13 can be a spring or a spring sheet, etc., and can be specifically selected according to the actual situation, and no specific limitation is made in this embodiment.

[0063] In some embodiments, in a plane perpendicular to the first direction X, the area of the largest cross-section of the first sealing portion 120 is larger than the area of the largest cross-section of the second sealing portion 122.

[0064] In this way, on the one hand, since the magnitude of the hydraulic pressure and resistance received by the adjusting member 12 is mainly related to the area of the maximum cross-section S of the first blocking portion 120 in the plane perpendicular to the first direction X, by making the area of the maximum cross-section of the first blocking portion 120 relatively large, the hydraulic pressure and resistance received by the adjusting member 12 during the movement of the piston 11 are relatively large, which can satisfy that during the movement of the piston 11 from the second intermediate position to the first intermediate position, the elastic force of the elastic member 13 is balanced with the hydraulic pressure and resistance, so that the first blocking portion 120 opens the first opening 1120 and the second blocking portion 122 opens the second opening 1121. It can also satisfy that during the movement of the piston 11 from the first intermediate position to the end position, the elastic force of the elastic member 13 is less than the hydraulic pressure and resistance, and the elastic member 13 is compressed to make the first blocking portion 120 block the first opening 1120. On the other hand, by making the area of the maximum cross-section of the second blocking portion 122 relatively small, during the assembly of the adjusting member 12 and the piston 11, it is convenient to insert the second blocking portion 122 into the first through hole 122, so as to place the connecting portion 121 into the first through hole 112.

[0065] In some embodiments, the surface of the first blocking portion 120 facing away from the piston 11 is configured as a convex surface, and the protruding direction of the convex surface is the same as the first direction X.

[0066] In this way, during the movement of the piston 11 from the initial position to the end position, the first blocking portion 120 will receive a resistance opposite to the first direction X. By configuring the surface of the first blocking portion 120 facing away from the piston 11 as a convex surface, the resistance received by the first blocking portion 120 can be made smaller and more uniform, which can improve the smoothness of the movement of the first blocking portion 120.

[0067] Optionally, the convex surface can be an arc surface or a conical surface, etc., and can be specifically selected according to the actual situation, and is not specifically limited in this embodiment.

[0068] In some embodiments, the water pump 1 further includes a first seal 14, and the first seal 14 is sleeved between the second blocking portion 122 and the connecting portion 121. The connecting portion 121 is used to move relative to the first through hole 112, so that the second blocking portion 122 drives the first seal 14 to block the second opening 1121.

[0069] In this way, by sleevedly providing the first sealing member 14 between the second sealing member 122 and the connecting member 121, the connecting member 121 moves relative to the first through hole 112 along the first direction X until the first sealing member 14 and the second sealing member 122 jointly block the second opening 1121 of the first through hole 112. The first sealing member 14 can improve the sealing effect when sealing the second opening 1121, and reduce the flow of liquid and gas from the gap between the second opening 1121 and the second sealing member 122, thereby ensuring that the pressure of the main pump chamber 103 is increased more quickly during the movement of the piston 11 from the initial position to the second intermediate position. At the same time, the first sealing member 14 can buffer the piston 11 and the second sealing member 122, thereby avoiding direct collision between the piston 11 and the second sealing member 122 when the connecting member 121 moves relative to the first through hole 112, and improving the service life of the piston 11 and the adjusting member 12.

[0070] Optionally, the first sealing member 14 may be a rubber ring or a plastic ring, etc., which may be selected according to actual conditions and is not specifically limited in this embodiment.

[0071] In some embodiments, the water pump 1 includes a second sealing member 15 , which is connected to the piston 11 and the pump body 10 , and is used to seal and isolate the first chamber 1040 from the second chamber 1041 .

[0072] In this way, by setting the second seal 15, the second seal 15 can seal the gap between the piston 11 and the wall of the active chamber 104, that is, isolate the first chamber 1040 and the second chamber 1041, and reduce the occurrence of liquid flowing through the gap between the piston 11 and the wall of the active chamber 104.

[0073] Optionally, the second sealing member 15 may be a rubber ring or a plastic ring, etc., which may be selected according to actual conditions and is not specifically limited in this embodiment.

[0074] In some embodiments, the second sealing member 15 is disposed in the first chamber 1040, and a second through hole 150 is disposed on the second sealing member 15. The second through hole 150 is connected to the first chamber 1040 and the first through hole 112. The adjusting member 12 includes a first blocking portion 120 and a connecting portion 121. The first blocking portion 120 is connected to the connecting portion 121 and is located on the side of the second sealing member 15 away from the piston 11. The connecting portion 121 is movably disposed between the first through hole 112 and the second through hole 150. The connecting portion 121 is used to move relative to the first through hole 112 so that the first blocking portion 120 blocks the second through hole 150, and is used to move relative to the first through hole 112 so that the first blocking portion 120 opens the second through hole 150.

[0075] In this way, the connecting portion 121 can move relative to the first through hole 112 in a direction opposite to the first direction X until the first blocking portion 120 blocks the second through hole 150 of the second seal 15, so that the second seal 15 and the first blocking portion 120 jointly block the first opening 1120 of the first through hole 112. Compared with the first blocking portion 120 directly blocking the first opening 1120, by the first blocking portion 120 blocking the second through hole 150 of the second seal 15, the blocking of the first opening 1120 is realized, which can improve the sealing effect when blocking the first opening 1120 and reduce the occurrence of liquid and gas flowing through the gap between the first opening 1120 and the first blocking portion 120. Thus, during the movement of the piston 11 from the first intermediate position to the end position, it can be ensured that all the liquid in the main pump chamber 103 will be pumped out of the main pump chamber 103, ensuring the flow rate of the liquid pumped out of the main pump chamber 103. At the same time, the second seal 15 can buffer the piston 11 and the first blocking portion 120, preventing the piston 11 and the first blocking portion 120 from directly colliding when the connecting portion 121 moves relative to the first through hole 112, and improving the service life of the piston 11 and the adjusting member 12. In addition, the second seal 15 also seals the gap between the piston 11 and the pump body 10, realizing the reuse of the structure, making the structure of the water pump 1 relatively simple and reducing the assembly difficulty of the water pump 1.

[0076] In some embodiments, the piston 11 includes a first portion 110 and a second portion 111 connected to each other. The first portion 110 and the second portion 111 jointly form a first through hole 112. A protruding portion 1100 is provided on the side of the first portion 110 facing away from the second portion 111. The protruding portion 1100 is arranged to surround the first direction X. A recessed portion 151 is provided on the inner wall surface of the second through hole 150. The recessed portion 151 is arranged to surround the first direction X. A part of the second seal 15 is sleeved on the first portion 110, and the recessed portion 151 is snap-fitted to the protruding portion 1100.

[0077] In this way, by providing the recessed portion 151 on the second seal 15 and the protruding portion 1100 on the first portion 110 of the piston 11, since the second seal 15 is usually made of a flexible material, the second seal 15 is directly sleeved on the first portion 110, and the protruding portion 1100 of the first portion 110 is snapped into the recessed portion 151 of the second seal 15, so that the second seal 15 and the piston 11 can be fixed. The installation method is relatively simple, and it can ensure that the second seal 15 and the piston 11 will not become detached during the movement of the piston 11, ensuring the sealing effect of the second seal 15 on the piston 11.

[0078] In some embodiments, the surface of the first plugging portion 120 facing the piston 11 is configured to be a concave surface, and the orientation of the concave surface is the same as the first direction X, so that the first plugging portion 120 is formed with a engaging portion 1200. A slot 152 is provided on the side of the second seal 15 facing the first plugging portion 120. The slot 152 is arranged around the axis of the first through hole 112, and the slot 152 is used for engaging connection with the engaging portion 1200.

[0079] In this way, by forming the engaging portion 1200 on the surface of the first plugging portion 120 facing the piston 11, during the process of the piston 11 moving from the first intermediate position to the end position, the connecting portion 121 moves relative to the first through hole 112 in a direction opposite to the first direction X until the engaging portion 1200 is engaged with the slot 152 on the second seal 15. The engaging portion 1200 and the slot 152 can increase the contact area between the first plugging portion 120 and the second seal 15, thereby improving the sealing effect between the first plugging portion 120 and the second seal 15. At the same time, the slot 152 can also play a positioning role for the engaging portion 1200, so that during the movement of the piston 11, each time the slot 152 abuts against the engaging portion 1200, the adjusting member 12 and the elastic member 13 can be reset, thereby improving the stability of the movement of the adjusting member 12 and the elastic member 13.

[0080] Optionally, the engaging portion 1200 can be a ring-shaped protrusion or an arc-shaped protrusion, and the shape of the slot 152 is set corresponding to the shape of the engaging portion 1200, which can be specifically selected according to the actual situation and is not specifically limited in this embodiment.

[0081] Please refer to Figure 2 , in some embodiments, the water pump 1 further includes a buffer member 16. The buffer member 16 is fixedly arranged in the movable cavity 104. The buffer member 16 is sleeved on the piston 11, and the piston 11 is movably connected to the buffer member 16.

[0082] In this way, by sleeving the buffer member 16 on the piston 11, that is, the buffer member 16 is between the piston 11 and the movable cavity 104. On the one hand, the buffer member 16 can play a buffering role for the movement of the piston 11 relative to the movable cavity 104, avoiding direct contact between the piston 11 and the movable cavity 104 and reducing the wear between the piston 11 and the movable cavity 104. On the other hand, the buffer member 16 can seal the gap between the piston 11 and the wall surface of the movable cavity 104, that is, isolate the first chamber 1040 and the second chamber 1041, and reduce the phenomenon of liquid flowing through the gap between the piston 11 and the wall surface of the movable cavity 104.

[0083] Optionally, the buffer member 16 can be a rubber member, a plastic member or other elastic materials, etc., which can be specifically selected according to the actual situation and is not specifically limited in this embodiment.

[0084] In this embodiment, the buffer member 16 is sleeved on the piston 11 and the second seal member 15 at the same time. Through the cooperation of the buffer member 16 with the second seal member 15 and the piston 11, the contact area of the buffer member 16 with the second seal member 15 and the piston 11 is relatively large, which can further reduce the phenomenon of liquid flowing through the gap between the piston 11 and the wall surface of the movable cavity 104.

[0085] Optionally, the specific connection mode of the water inlet 106, the water passage 107 and the water tank may be that the water inlet 106 and the water passage 107 are directly connected to the water tank respectively, or the water inlet 106 and the water passage 107 are connected to the same channel and then connected to the water tank through the channel. Specifically, it can be selected according to the actual situation and is not specifically limited in this embodiment.

[0086] In some embodiments, the pump body 10 includes a main housing 100 and a first sub-housing 101. The main housing 100 is provided with a main pump cavity 103, a movable cavity 104, a water outlet 105, a water inlet 106 and a water passage 107. The movable cavity 104 and the main pump cavity 103 are arranged in sequence along the first direction X. The first sub-housing 101 is arranged on one side of the main housing 100 in the direction perpendicular to the first direction X. The first sub-housing 101 is provided with a water inlet passage 1010. One end of the water inlet passage 1010 is connected to the water inlet 106, and the other end of the water inlet passage 1010 is used to be connected to the water tank. The water passage 107 is connected to the water inlet passage 1010.

[0087] In this way, by providing the first sub-housing 101, the first sub-housing 101 is provided with the water inlet passage 1010, and the water inlet 106 can be connected to the water tank through the water inlet passage 1010, so that the water tank does not need to be arranged adjacent to the water inlet 106. When the water pump 1 is applied to the oral care device, the position of the water tank can be set flexibly. In addition, since a large number of holes and grooves need to be opened on the pump body 10, by separating the pump body 10 into the main housing 100 and the first sub-housing 101, the number of holes and grooves that need to be provided on the main housing 100 can be reduced, and the processing difficulty of the pump body 10 can be reduced.

[0088] In some embodiments, one side of the movable cavity 104 facing away from the main pump cavity 103 has an open end 1042. The pump body 10 further includes a second sub-housing 102, and the second sub-housing 102 covers the open end 1042; the second sub-housing 102 is provided with a water passage 1020, and the water passage 1020 is connected to the water passage 107 and the water inlet passage 1010.

[0089] In this way, by providing the second auxiliary housing 102 which is provided with a water passage 1020, the water inlet 107 is communicated with the water inlet passage 1010 through the water passage 1020. During the process of the piston 11 moving from the second intermediate position to the first intermediate position, part of the liquid in the main pump chamber 103 can flow from the water inlet 107 to the water passage 1020, then from the water passage 1020 to the water inlet passage 1010, and then return to the water tank from the water inlet passage 1010. In addition, by separately providing the pump body 10 as the main housing 100, the first auxiliary housing 101 and the second auxiliary housing 102, it is convenient to form the main pump chamber 103 and the movable chamber 104 on the main housing 100, and then by covering the open end 1042 of the movable chamber 104 with the second auxiliary housing 102, the main pump chamber 103 and the movable chamber 104 located within the pump body 10 can be formed, which can further reduce the processing difficulty of the pump body 10.

[0090] In some embodiments, the second auxiliary housing 102 is provided with a third through hole 1021 which communicates with the second chamber 1041. The water pump 1 further includes a power device 17 which passes through the third through hole 1021, and the power device 17 is connected to the piston 11. The power device 17 is used to drive the piston 11 to move relative to the movable chamber 104 along the first direction X or the second direction Y opposite to the first direction X.

[0091] In this way, the third through hole 1021 provided on the second auxiliary housing 102 enables the power device 17 to pass through the third through hole 1021 and realize the connection with the piston 11. By providing the power device 17, the power device 17 can provide power for the movement of the piston 11 in the first direction X and the second direction Y.

[0092] Optionally, the power device 17 can be a crank-rocker mechanism and a motor, or an electric push rod, etc., and can be specifically selected according to the actual situation, and is not specifically limited in this embodiment.

[0093] In some embodiments, the water inlet 106 is provided with a one-way valve (not shown), and the one-way valve is used to enable the liquid to flow unidirectionally from the water tank to the main pump chamber 103.

[0094] In this way, the one-way valve can prevent the liquid from flowing back from the main pump chamber 103 to the water tank, thereby ensuring that the liquid can be pumped out of the main pump chamber 103. When the water pump 1 is applied to an oral care device, it can ensure the cleaning effect of the oral care device on the oral cavity.

[0095] Please refer to Figure 6 , in which, Figure 6The dashed line in [it] indicates the positions of the water pump 1 and the water tank 20 within the oral care device 2. In a second aspect, the present utility model discloses an oral care device 2, which includes a water tank 20 and a water pump 1 as described in the first aspect above. The water tank 20 is connected to the water inlet 106 and the water passage port 107.

[0096] For the oral care device 2 provided in the second aspect of the embodiment of the present utility model, since the oral care device 2 is provided with the water pump 1 provided in the second aspect of the embodiment of the present utility model, the water pump 1 is provided with an adjusting member 12. During the process of the piston 11 moving from the initial position to the first intermediate position, the adjusting member 12 will open the first through hole 112 at least for some time, and part of the liquid in the main pump chamber 103 will flow back from the water passage port 107 to the water tank 20, reducing the liquid pumped out from the main pump chamber 103 when the pressure in the main pump chamber 103 is insufficient. Moreover, during the process of the piston 11 moving from the first intermediate position to the end position, the adjusting member 12 will block the first through hole 112, and all the liquid in the main pump chamber 103 will be pumped out, that is, it can achieve the water-saving effect of the oral care device 2 and ensure the cleaning effect of the oral care device 2 on the oral cavity.

[0097] Optionally, the water tank 20 can be integrally provided with the water pump 1, or the water tank 20 can be separately provided from the water pump 1, which can be specifically selected according to the actual situation and is not specifically limited in this embodiment.

[0098] The water pump and the oral care device disclosed in the embodiments of the present utility model have been introduced in detail above. Specific examples are used in this article to elaborate on the principles and implementation manners of the present utility model. The descriptions of the above embodiments are only used to help understand the water pump and the oral care device of the present utility model and its core idea; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present utility model.

Claims

1. A water pump, characterized in that: The water pump is applied to an oral care device, the oral care device comprises a water tank, and the water pump comprises: A pump body, wherein the pump body is provided with a main pump chamber, an active chamber, a water outlet, a water inlet and a water through port, the main pump chamber is connected to the active chamber, the water outlet and the water inlet, and the water inlet and the water through port are used to be connected to the water tank; A piston, the piston is movably connected to the active chamber, the piston is used to separate the active chamber into a first chamber and a second chamber located on two opposite sides of the piston, the first chamber is communicated with the main pump chamber, the second chamber is communicated with the water port, the piston is provided with a first through hole penetrating the piston in a first direction, and two ends of the first through hole are respectively communicated with the first chamber and the second chamber; and An adjusting member, wherein the adjusting member is movably disposed at the first through hole, and is used to move relative to the first through hole to block the first through hole so that the first chamber is connected to the second chamber, and is used to move relative to the first through hole to open the first through hole so that the first chamber is not connected to the second chamber.

2. The water pump according to claim 1, characterized in that: The two ends of the first through hole are respectively a first opening and a second opening, the first opening is connected to the first chamber, and the second opening is connected to the second chamber, the adjusting member comprises a first blocking portion, a connecting portion and a second blocking portion, the first blocking portion and the second blocking portion are respectively arranged at the two ends of the connecting portion in the first direction, the connecting portion is movably arranged on the first through hole, the connecting portion is used to move relative to the first through hole so that the first blocking portion blocks the first opening, and is used to move relative to the first through hole so that the second blocking portion blocks the second opening, and is used to move relative to the first through hole so that the first opening and the second opening are opened.

3. The water pump according to claim 2, characterized in that: The water pump further comprises an elastic member, two ends of which are respectively connected to the first blocking portion and the piston, and the elastic member is used to provide elastic force.

4. The water pump according to claim 3, characterized in that: In a plane perpendicular to the first direction, the maximum cross-sectional area of ​​the first blocking portion is greater than the maximum cross-sectional area of ​​the second blocking portion.

5. The water pump according to claim 4, characterized in that: A surface of the first blocking portion facing away from the piston is configured as a convex surface, and a convex direction of the convex surface is the same as the first direction.

6. The water pump according to claim 2, characterized in that: The water pump further includes a first sealing member, which is sleeved between the second blocking portion and the connecting portion, and the connecting portion is used to move relative to the first through hole so that the second blocking portion drives the first sealing member to block the second opening.

7. The water pump according to claim 1, characterized in that: The water pump includes a second seal connected to the piston and the pump body, and the second seal is used to seal and isolate the first chamber from the second chamber.

8. The water pump according to claim 7, characterized in that: The second sealing member is arranged in the first chamber, and a second through hole is arranged on the second sealing member, and the second through hole is connected to the first chamber and the first through hole. The adjusting member includes a first blocking portion and a connecting portion, and the first blocking portion is connected to the connecting portion and is located on the side of the second sealing member away from the piston. The connecting portion is movably arranged between the first through hole and the second through hole, and the connecting portion is used to move relative to the first through hole so that the first blocking portion blocks the second through hole, and is used to move relative to the first through hole so that the first blocking portion opens the second through hole.

9. The water pump according to claim 8, characterized in that A side of the first blocking portion facing the piston is configured as a concave surface, and the direction of the concave surface is the same as the first direction, so that the first blocking portion forms a clamping portion, and a clamping groove is provided on the side of the second sealing member facing the first blocking portion, and the clamping groove is arranged axially around the first through hole, and the clamping groove is used to be clamped and connected with the clamping portion.

10. The water pump according to any one of claims 1 to 9, characterized in that: The water pump further comprises a buffer member, wherein the buffer member is fixedly arranged in the movable chamber, the buffer member is sleeved on the piston, and the piston is movably connected to the buffer member.

11. The water pump according to any one of claims 1 to 9, characterized in that: The pump body includes a main shell and a first sub-shell, the main shell is provided with the main pump chamber, the active chamber, the water outlet, the water inlet and the water through port, the active chamber and the main pump chamber are arranged in sequence along the first direction, the first sub-shell is arranged on one side of the main shell in a direction perpendicular to the first direction, the first sub-shell is provided with a water inlet channel, one end of the water inlet channel is connected to the water inlet, the other end of the water inlet channel is used to connect to the water tank, and the water through port is connected to the water inlet channel.

12. The water pump according to claim 11, characterized in that The active chamber has an open end on one side away from the main pump chamber, and the pump body further comprises a second auxiliary shell, which covers the open end; The second sub-shell is provided with a water passage, and the water passage is connected to the water port and the water inlet passage.

13. The water pump according to claim 12, characterized in that The second sub-shell is provided with a third through hole, and the third through hole is connected to the second chamber. The water pump also includes a power device, which is passed through the third through hole and connected to the piston. The power device is used to drive the piston to move relative to the active chamber along the first direction or the second direction opposite to the first direction.

14. The water pump according to any one of claims 1 to 9, characterized in that: The water inlet is provided with a one-way valve, and the one-way valve is used to allow liquid to flow from the water tank to the main pump chamber in one direction.

15. An oral care device, characterized in that: The oral care device comprises a water tank and a water pump as described in any one of claims 1 to 14, and the water tank is connected to the water inlet and the water outlet.

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