Portable water pump and oral irrigator

Abstract

The utility model relates to the technical field of oral irrigators, in particular to a portable water pump and an oral irrigator, which comprise a shell, a motor, a cylinder body, an output gear, a transmission gear, a rotating shaft, a connecting rod, a piston, a water inlet device and a water outlet device, the motor and the cylinder body are installed in the shell, and an output shaft of the motor is connected with the output gear. The rotating shaft penetrates through the axis of the transmission gear, and the transmission gear is rotatably connected to the interior of the shell. The output gear is perpendicularly meshed with the transmission gear, the connecting rod is rotatably connected to the position, deviating from the axis, of the transmission gear, the other end of the connecting rod is connected with the piston, and the piston is located in an inner cavity of the cylinder body. The shell is provided with a water inlet and a water outlet which are communicated with the interior of the cylinder body, the water inlet is provided with the water inlet device, and the water outlet is provided with the water outlet device.

Description

Technical Field

[0001] The utility model relates to the technical field of water flossers, and more specifically, to a portable water pump and a water flosser. Background Art

[0002] An oral irrigator is an auxiliary tool for cleaning the oral cavity. It uses pulsed water flow to clean teeth and interdental spaces. It is mainly portable and desktop. The general flushing pressure is 0 to 90 psi.

[0003] Oral irrigators are widely used in daily life. They can deeply clean various gaps between teeth and uneven tooth surfaces, promote blood circulation in gums, eliminate bad breath, and prevent oral problems such as caries, gingivitis, and periodontitis. The core component of oral irrigators is the water pump. Currently, the existing water pumps have complex structures, many parts, high manufacturing costs, and low assembly efficiency.

[0004] Chinese patent document: CN 116517823 A, publication date: 2023.08.01, discloses a water pump for a water flosser, including a housing, a first cylinder body, a piston, a second cylinder body, a wear-resistant block and a driving assembly; the housing includes a first water outlet; the piston includes a movable head and an extension rod, the movable head is located on the inner side of the first cylinder body, and the extension rod is located on the side of the movable head away from the first water outlet; the second cylinder body, the extension rod extends to the inner side of the second cylinder body; the wear-resistant block is located on the inner side of the second cylinder body, and slides with the inner wall of the second cylinder body; the driving assembly includes a driving member, an eccentric gear and a connecting rod, the driving member drives the eccentric gear to rotate, the two ends of the connecting rod are respectively connected to the eccentric gear and the wear-resistant block for rotation, and the driving member pushes the piston to move along the first direction. The water pump for a water flosser provided in the embodiment of the present application can slow down the wear rate of the piston and extend the service life of the piston. However, this technical solution has a complex structure, many parts, high manufacturing cost and low assembly efficiency.

[0005] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Utility Model Content

[0006] The utility model aims to provide a portable water pump and a water flosser. The portable water pump simplifies the water pump parts and improves the assembly efficiency.

[0007] The utility model provides a portable water pump, comprising a shell, a motor, a cylinder, an output gear, a transmission gear, a rotating shaft, a connecting rod, a piston, a water inlet device and a water outlet device; the motor and the cylinder are installed inside the shell, and the output shaft of the motor is connected with the output gear; the rotating shaft passes through the axis of the transmission gear, and rotatably connects the transmission gear to the inside of the shell; the output gear and the transmission gear are vertically meshed, and the connecting rod is rotatably connected at a position where the transmission gear deviates from the axis, and the other end of the connecting rod is connected with the piston, and the piston is located in the inner cavity of the cylinder; a water inlet and a water outlet connected to the inside of the cylinder are provided on the shell, the water inlet is installed on the water inlet, and the water outlet is installed on the water outlet.

[0008] Furthermore, the water inlet device includes a water inlet cover and a valve plate, wherein the valve plate is located at the water inlet and is pressed by the water inlet cover, and the valve plate is unidirectionally conductive toward the inside of the cylinder body; a water inlet pipe is sealed and connected to the other end of the water inlet cover.

[0009] Furthermore, the water outlet device includes a water outlet cover and a one-way duckbill valve. The one-way duckbill valve is located at the water outlet and is pressed by the water outlet cover. The one-way duckbill valve is conductive in one direction away from the inside of the cylinder body, and a water spray pipe is sealed and connected to the other end of the water outlet cover.

[0010] Furthermore, the portable water pump also includes a connecting shaft and a piston fixing seat; the other end of the connecting rod is hinged to the piston fixing seat through the connecting shaft, and the piston is clamped on the piston fixing seat.

[0011] Furthermore, the piston fixing seat is cylindrical, and four anti-wear protrusions are provided on the side of the piston fixing seat, and the angle between adjacent anti-wear protrusions is 90 degrees.

[0012] The present invention also provides a water flosser, comprising the portable water pump.

[0013] Furthermore, the water flosser includes a water tank and a connector, and the water inlet pipe is connected to the water tank via the connector.

[0014] Furthermore, the oral irrigator also includes a circuit board, and a buckle is provided on the shell, and the circuit board is clamped on the buckle.

[0015] The portable water pump of the utility model has the advantages that when the piston moves downward, the water inlet device opens and the water outlet device closes, air is sucked into the cylinder body, and water is sucked into the cylinder body through the water inlet device according to the principle of atmospheric pressure; when the piston moves upward, the water inlet device closes and the water outlet device opens to discharge the water in the cylinder body, thereby realizing water spraying; the portable water pump has the advantages of simple structure, few parts, low manufacturing cost and improved assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic cross-sectional structure diagram of a portable water pump provided in an embodiment of the utility model.

[0017] Figure 2 for Figure 1 Schematic diagram of the planar structure of the portable water pump.

[0018] Figure 3 for Figure 1 Another perspective structural diagram of the portable water pump.

[0019] Figure 4 for Figure 1 Schematic diagram of the cross-sectional structure of the portable water pump from another perspective.

[0020] Figure 5 for Figure 1 Schematic diagram of the structure of the piston fixing seat of the portable water pump.

[0021] Figure 6 for Figure 1 A schematic plan view of the combination of the cylinder body and the piston fixing seat of the portable water pump.

[0022] Figure 7 for Figure 1 Schematic diagram of the disassembled structure of the portable water pump.

[0023] Figure 8 for Figure 1 Schematic diagram of the circuit board structure of the portable water pump.

[0024] The reference numerals and components involved in the drawings are as follows:

[0025] 1. Shell 11, water inlet 12, water outlet

[0026] 13. Buckle 2, motor 3, cylinder body

[0027] 4. Output gear 5. Transmission gear 6. Rotating shaft

[0028] 7. Connecting rod 8. Piston 9. Water inlet device

[0029] 91. Water inlet cover 92. Valve plate 93. Water inlet pipe

[0030] 94, screw 95, screw column 10, water outlet device

[0031] 110, water outlet cover 120, one-way duckbill valve 130, water spray pipe

[0032] 20, connecting shaft 30, piston fixing seat 310, anti-wear protrusion

[0033] 40. Connector 50. Circuit board DETAILED DESCRIPTION

[0034] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0035] The terms "first", "second", "third", "fourth" and the like in the specification and claims of the present utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0036] Example 1

[0037] Figure 1 A schematic cross-sectional view of a portable water pump provided in an embodiment of the utility model. Figure 2 for Figure 1 Schematic diagram of the plan structure of the portable water pump. Please refer to Figure 1 , Figure 2 The portable water pump provided by the embodiment of the utility model includes a shell 1, a motor 2, a cylinder 3, an output gear 4, a transmission gear 5, a rotating shaft 6, a connecting rod 7, a piston 8, a water inlet device 9 and a water outlet device 10; the motor 2 and the cylinder 3 are installed inside the shell 1, and the output shaft of the motor 2 is connected with the output gear 4; the rotating shaft 6 passes through the axis of the transmission gear 5, and the transmission gear 5 is rotatably connected to the inside of the shell 1; the output gear 4 and the transmission gear 5 are vertically meshed, and the connecting rod 7 is rotatably connected to the transmission gear 5 at a position where the transmission gear 5 deviates from the axis, and the other end of the connecting rod 7 is connected to the piston 8, and the piston 8 is located in the inner cavity of the cylinder 3; a water inlet 11 and a water outlet 12 connected to the inside of the cylinder 3 are provided on the shell 1, the water inlet device 9 is installed on the water inlet 11, and the water outlet device 10 is installed on the water outlet 12.

[0038] It should be noted that the water inlet device 9 is used to control the water flow to flow in one direction from the outside to the inside of the cylinder body 3, and the water outlet device 10 is used to control the water flow to flow in one direction from the inside of the cylinder body 3 to the outside; the output gear 4 is used to drive the transmission gear 5 to rotate; the connecting rod 7 rotatably connected to the transmission gear 5 at a position away from the axis moves eccentrically under the drive of the transmission gear 5; constrained by the cylinder body 3, the connecting rod 7 reciprocates up and down in the cylinder body 3, thereby driving the piston 8 to reciprocate up and down in the cylinder body 3;

[0039] The portable water pump of the utility model, when the piston 8 moves downward, the water inlet device 9 opens, the water outlet device 10 closes, the cylinder 3 will suck air, and water will be sucked into the cylinder 3 through the water inlet device 9 according to the atmospheric pressure principle; when the piston 8 moves upward, the water inlet device 9 closes, and the water outlet device 10 opens to discharge the water in the cylinder 3, so as to realize water spraying. The structure is simple, the parts are few, the manufacturing cost is low, and the assembly efficiency is improved.

[0040] Figure 7 for Figure 1 Schematic diagram of the disassembled structure of the portable water pump. Figure 1 , Figure 2 , Figure 7 The water inlet device 9 of the utility model includes a water inlet cover 91 and a valve plate 92. The valve plate 92 is located at the water inlet 11 and is pressed by the water inlet cover 91. The valve plate 92 is unidirectionally conductive toward the inside of the cylinder body 3. A water inlet pipe 93 is sealed and connected to the other end of the water inlet cover 91. The water outlet device 10 includes a water outlet cover 110 and a one-way duckbill valve 120. The one-way duckbill valve 120 is located at the water outlet 12 and is pressed by the water outlet cover 110. The one-way duckbill valve 120 is unidirectionally conductive away from the inside of the cylinder body 3. A water spray pipe 130 is sealed and connected to the other end of the water outlet cover 110.

[0041] It should be noted that the compression valve plate 92 is unidirectionally conductive in the direction of the cylinder body 3, so that the water flow can only flow in one direction from the outside to the inside of the cylinder body 3; the water inlet cover 91 and the cylinder body 3 are sealed by a sealing ring to prevent air leakage. A sealing ring is provided between the water inlet cover 91 and the cylinder body 3 and between the water outlet cover 110 and the cylinder body 3 to prevent air leakage. In addition, a sealing ring is provided between the water pump and the water spray pipe 130, and there is a circle of sealing lines inside and outside the sealing ring. The outer sealing line can seal the water pump and the housing 1 to prevent water from entering the pump body; the inner sealing line seals the water spray pipe 130 and the water pump to keep the water spray pipe 130 at a certain pressure.

[0042] Furthermore, the valve plate 92 is made of polyimide wear-resistant material with a thickness of 0.15-0.18 mm and has certain toughness and sealing properties; the one-way duckbill valve 120 is made of wear-resistant rubber material with moderate softness and fatigue resistance.

[0043] In addition, since there is a valve plate 92 at the water inlet cover 91, the pressure here is very large when spraying water. The water inlet cover 91 and the cylinder body 3 must be fully and firmly connected, and the water inlet cover 91 must be pressed tightly by screws 94 and screw columns 95; thereby improving the stability of the connection.

[0044] like Figure 1As shown, the upper, lower and right sides of the cylinder body 3 are sealed. When the piston 8 moves downward, the valve plate 92 will open to the left, and the one-way duckbill valve 120 will close, so that air will be sucked into the cylinder body 3, and the air in the water inlet pipe 93 will be reduced. According to the principle of atmospheric pressure, water will enter the water inlet pipe 93. When the piston 8 moves upward, the valve plate 92 will close the seal, and the one-way duckbill valve 120 will open to discharge the air. When the piston 8 moves rapidly, after the air in the water inlet pipe 93 is discharged, water will be sucked into the cylinder body 3, and the water will be sprayed out from the one-way duckbill valve 120 under the thrust of the piston 8, thereby realizing water spraying.

[0045] Figure 4 for Figure 1 Another perspective cross-sectional structural diagram of the portable water pump. Figure 5 for Figure 1 Schematic diagram of the structure of the piston fixing seat of the portable water pump. Figure 6 for Figure 1 A schematic plan view of the combination of the cylinder body and the piston fixing seat of the portable water pump.

[0046] Further references Figure 1 , Figure 4 , Figure 5 , Figure 6 The portable water pump of the utility model further comprises a connecting shaft 20 and a piston fixing seat 30 ; the other end of the connecting rod 7 is hinged to the piston fixing seat 30 through the connecting shaft 20 , and the piston 8 is clamped on the piston fixing seat 30 .

[0047] Specifically, the piston fixing seat 30 is cylindrical, and four anti-wear protrusions 310 are provided on the side surface of the piston fixing seat 30 , and the angle between adjacent anti-wear protrusions 310 is 90 degrees.

[0048] It should be noted that the piston fixing seat 30 will be subject to unilateral wear with the cylinder body 3 during movement, and the rotation direction of the transmission gear 5 will cause the piston fixing seat 30 to wear on the left or right side; when the piston fixing seat 30 is a perfect circle, the wear will slowly change from a line to a surface with only one wear point; the two sides of the wear point of the piston fixing seat 30 are raised to form anti-wear protrusions 310, and there will be two wear points during wear. Although the current will increase, the test found that it can be ignored and will not affect the pumping performance; the two wear points can slow down the wear, reduce the amount of wear, and permanently ensure the concentricity of the piston 8 and the cylinder body 3, and the sealing effect is better.

[0049] Figure 3 for Figure 1 Another perspective structural diagram of the portable water pump. Figure 8 for Figure 1 Schematic diagram of the circuit board structure of the portable water pump. Figure 3 , Figure 8 The utility model also provides a water flosser, comprising the above-mentioned portable water pump.

[0050] Furthermore, the oral irrigator includes a water tank and a connector 40 , and the water inlet pipe 93 is connected to the water tank via the connector 40 .

[0051] It should be noted that a sealing ring is put on the connecting head 40, and the water inlet pipe 93 can be quickly connected to the water tank through the connecting head 40 during assembly; specifically, screw columns and snap-in openings are provided on the shell 1, and the connecting head 40 is snapped into the screw columns and snap-in openings on the shell 1, so that the connecting head 40 can be quickly positioned.

[0052] The dental flosser of the present invention further comprises a circuit board 50. A buckle 13 is provided on the housing 1, and the circuit board 50 is clamped on the buckle 13. No screws are required, which is convenient and quick.

[0053] Based on the above description, it can be seen that the advantages of the utility model are:

[0054] The portable water pump of the utility model, when the piston 8 moves downward, the water inlet device 9 opens, the water outlet device 10 closes, the cylinder 3 will suck air, and water will be sucked into the cylinder 3 through the water inlet device 9 according to the atmospheric pressure principle; when the piston 8 moves upward, the water inlet device 9 closes, and the water outlet device 10 opens to discharge the water in the cylinder 3, so as to realize water spraying. The structure is simple, the parts are few, the manufacturing cost is low, and the assembly efficiency is improved.

[0055] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A portable water pump, characterized in that: It comprises a housing (1), a motor (2), a cylinder (3), an output gear (4), a transmission gear (5), a rotating shaft (6), a connecting rod (7), a piston (8), a water inlet device (9) and a water outlet device (10); The motor (2) and the cylinder (3) are installed inside the housing (1), and the output shaft of the motor (2) is connected to the output gear (4); the rotating shaft (6) passes through the axis of the transmission gear (5) to rotatably connect the transmission gear (5) inside the housing (1); The output gear (4) and the transmission gear (5) are vertically meshed, and the connecting rod (7) is rotatably connected to the transmission gear (5) at a position offset from the axis, and the other end of the connecting rod (7) is connected to the piston (8), and the piston (8) is located in the inner cavity of the cylinder body (3); The housing (1) is provided with a water inlet (11) and a water outlet (12) which are in communication with the interior of the cylinder body (3); the water inlet device (9) is installed on the water inlet (11), and the water outlet device (10) is installed on the water outlet (12).

2. The portable water pump according to claim 1, characterized in that: The water inlet device (9) comprises a water inlet cover (91) and a valve plate (92); the valve plate (92) is located at the water inlet (11) and is pressed by the water inlet cover (91); the valve plate (92) is unidirectionally conductive toward the inside of the cylinder body (3); and a water inlet pipe (93) is sealed and connected to the other end of the water inlet cover (91).

3. The portable water pump according to claim 1, characterized in that: The water outlet device (10) comprises a water outlet cover (110) and a one-way duckbill valve (120). The one-way duckbill valve (120) is located at the water outlet (12) and is pressed by the water outlet cover (110). The one-way duckbill valve (120) is one-way conductive away from the inside of the cylinder body (3). A water spray pipe (130) is sealed and connected to the other end of the water outlet cover (110).

4. The portable water pump according to claim 1, characterized in that: The portable water pump further comprises a connecting shaft (20) and a piston fixing seat (30); the other end of the connecting rod (7) is hingedly connected to the piston fixing seat (30) via the connecting shaft (20), and the piston (8) is clamped on the piston fixing seat (30).

5. The portable water pump according to claim 4, characterized in that: The piston fixing seat (30) is cylindrical, and four anti-wear protrusions (310) are provided on the side surface of the piston fixing seat (30), and the angle between adjacent anti-wear protrusions (310) is 90 degrees.

6. A dental flosser, characterized in that: A portable water pump comprising any one of claims 1-5.

7. The oral rinser according to claim 6, characterized in that: The water flosser comprises a water tank and a connector (40), and the water inlet pipe (93) is connected to the water tank via the connector (40).

8. The oral rinser according to claim 6, characterized in that: The oral irrigator further comprises a circuit board (50), a buckle (13) is provided on the housing (1), and the circuit board (50) is clamped on the buckle (13).

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