Diaphragm water pump and oral cavity cleaning appliance

Abstract

The diaphragm water pump comprises a pump body, a pump head, a motor, a gear transmission assembly and a connecting rod, a diaphragm piece is arranged on the pump body, and the diaphragm piece is used for generating suction or discharge actions; the pump head comprises an upper cover and a valve plate, a fluid pump cavity is formed in the valve plate, the upper cover and the valve plate are provided with a suction channel and a discharge channel which are communicated with the fluid pump cavity, the suction channel is provided with a water inlet one-way valve, and the discharge channel is provided with a water outlet one-way valve; the gear transmission assembly comprises a motor gear fixed to a motor output shaft and an eccentric gear perpendicularly meshed with the motor gear, an eccentric gear shaft is fixed to the center of the eccentric gear, and the two ends of the eccentric gear shaft are installed on the pump body through bearings. The motor rotates to drive the eccentric gear, the eccentric gear drives the connecting rod and the diaphragm piece to reciprocate to compress the cavity, the length and width of the pump are reduced, a user can hold the pump conveniently, and the vibration feeling generated when the user holds the pump is reduced.

Description

Technical Field

[0001] This invention relates to the field of diaphragm water pump technology, specifically to a diaphragm water pump and an oral hygiene device. Background Technology

[0002] A diaphragm pump uses an internal mechanical device to make the diaphragm inside the pump reciprocate, and can continuously create a vacuum or negative pressure at the suction port and a positive pressure at the exhaust port; the working medium is mainly gas or liquid, and it is mainly used in household appliances, medical equipment and other equipment.

[0003] Existing diaphragm water pumps use a transversely eccentric diaphragm structure that is perpendicular to the motor shaft. This results in a large lateral volume, making it inconvenient for customers to hold. Furthermore, when the water pump is used as an oral hygiene device, it vibrates significantly in the direction of the grip, leading to a poor user experience. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a diaphragm water pump and oral cleaning device. The pump uses a rotating motor to drive an eccentric gear, which in turn drives a connecting rod and a diaphragm to reciprocate and compress the cavity. This changes the direction of liquid compression from horizontal to vertical, reducing the length and width of the pump and making it easier for users to hold and use. The vibration of the compression cavity caused by the horizontal movement of the connecting rod is transformed into the vibration caused by the vertical movement of the compression cavity, reducing the vibration felt by the user when holding the pump.

[0005] To achieve the above objectives, in one aspect, at least one embodiment of the diaphragm water pump provided by the present invention includes: A pump body, wherein a diaphragm is provided on the pump body, the diaphragm being used to generate suction or discharge action; The pump head includes a top cover and a valve plate. The valve plate is disposed on the pump body, and the top cover is disposed on the valve plate. The valve plate has a fluid pump chamber. The top cover and the valve plate have an intake channel and an exhaust channel communicating with the fluid pump chamber. The intake channel is provided with an inlet check valve, and the exhaust channel is provided with an outlet check valve. The inlet check valve and the outlet check valve together ensure that the fluid flows unidirectionally from the inlet to the outlet. An electric motor is located at the end of the pump body away from the pump head; A gear transmission assembly, comprising a motor gear fixed on the motor output shaft and an eccentric gear meshing perpendicularly with the motor gear, wherein an eccentric gear shaft is fixed at the center of the eccentric gear and both ends of the eccentric gear shaft are mounted on the pump body via bearings; A connecting rod, with an eccentric gear and a diaphragm respectively connected at both ends, converts the rotational motion of the eccentric gear into the longitudinal reciprocating motion of the diaphragm.

[0006] In a diaphragm water pump provided in one embodiment of the present invention: the bearing is a ball bearing or an oil-impregnated bearing, used to limit the radial movement of the eccentric gear shaft and increase stability.

[0007] In a diaphragm water pump provided in one embodiment of the present invention: the upper cover is provided with an ultrasonic cover, which is fixedly connected to the upper cover by ultrasonic welding to prevent water leakage.

[0008] In a diaphragm water pump provided in one embodiment of the present invention: a sealing gasket is provided between the upper cover and the valve plate to prevent water leakage.

[0009] In a diaphragm water pump provided in one embodiment of the present invention: the connecting rod and the diaphragm are fixed by fasteners, the fasteners including screws and nuts, the screws pass through the diaphragm and the connecting rod in sequence and are threadedly connected to the nuts, thereby fastening the diaphragm and the connecting rod into one unit.

[0010] On the other hand, embodiments of the present invention also provide an oral cleaning device, including the diaphragm water pump described above.

[0011] The beneficial effects of this invention are: by rotating the motor to drive the eccentric gear, the eccentric gear drives the connecting rod and diaphragm to reciprocate to compress the chamber, changing the direction of the connecting rod compressing the liquid from the horizontal to the vertical, reducing the length and width of the pump, making it easier for the user to hold and use. In addition, the vibration of the connecting rod moving horizontally to compress the chamber is changed to the vibration of the connecting rod moving vertically to compress the chamber, reducing the vibration felt by the user when holding it. Attached Figure Description

[0012] The present invention will be further described with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of a diaphragm water pump according to an embodiment of the present invention.

[0014] The labels in the diagram represent: 1. Ultrasonic cover; 2. Top cover; 3. Sealing gasket; 4. Inlet check valve; 5. Valve plate; 6. Diaphragm; 7. Eccentric gear; 8. Pump body; 9. Eccentric gear shaft; 10. Ball bearing; 11. Motor gear; 12. Motor; 13. Outlet check valve; 14. Screw; 15. Nut; 16. Connecting rod; 17. Oil-impregnated bearing. Detailed Implementation

[0015] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0016] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0017] The diaphragm water pump provided in the embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0018] This embodiment provides a diaphragm water pump. Figure 1 This is a schematic diagram of the structure of a diaphragm water pump according to an embodiment of the present invention.

[0019] Reference Figure 1 As shown, a diaphragm water pump provided in one embodiment of the present invention includes: Pump body 8, on which a diaphragm 6 is provided, the diaphragm 6 being used to generate suction or discharge action; The pump head includes an upper cover 2 and a valve plate 5. The valve plate 5 is disposed on the pump body 8, and the upper cover 2 is disposed on the valve plate 5. The valve plate 5 has a fluid pump chamber. The upper cover 2 and the valve plate 5 have an intake channel and an exhaust channel that communicate with the fluid pump chamber. The intake channel is provided with an inlet check valve 4, and the exhaust channel is provided with an outlet check valve 13. The inlet check valve 4 and the outlet check valve 13 together ensure that the fluid flows unidirectionally from the inlet to the outlet. Motor 12, wherein the motor 12 is disposed at the end of the pump body 8 away from the pump head; The gear transmission assembly includes a motor gear 11 fixed on the output shaft of the motor 12 and an eccentric gear 7 that meshes perpendicularly with the motor gear 11. An eccentric gear shaft 9 is fixed at the center of the eccentric gear 7, and both ends of the eccentric gear shaft 9 are mounted on the pump body 8 through bearings. The connecting rod 16 has an eccentric gear 7 and a diaphragm 6 connected to its two ends, respectively, which convert the rotational motion of the eccentric gear 7 into the longitudinal reciprocating motion of the diaphragm 6.

[0020] In a diaphragm water pump provided in one embodiment of the present invention: the bearing is a ball bearing 10 or an oil-impregnated bearing 17, used to limit the radial movement of the eccentric gear shaft 9 and increase stability.

[0021] In a diaphragm water pump provided in an embodiment of the present invention: the upper cover 2 is provided with an ultrasonic cover 1, which is fixedly connected to the upper cover 2 by ultrasonic welding to prevent water leakage.

[0022] In a diaphragm water pump provided in an embodiment of the present invention: a sealing gasket 3 is provided between the upper cover 2 and the valve plate 5 to prevent water leakage.

[0023] In a diaphragm water pump provided in an embodiment of the present invention: the connecting rod 16 and the diaphragm 6 are fixed by fasteners, the fasteners including screws 14 and nuts 15. The screws 14 pass through the diaphragm 6 and the connecting rod 16 in sequence and are threadedly connected to the nuts 15, thereby fastening the diaphragm 6 and the connecting rod 16 into one unit.

[0024] On the other hand, embodiments of the present invention also provide an oral cleaning device, including the diaphragm water pump described above.

[0025] In practical use, when the motor 12 is powered on, the motor shaft rotates and drives the motor gear 11. The motor gear 11 meshes with the eccentric gear 7 at a 90-degree angle, causing the eccentric gear 7 to rotate. The eccentric gear 7 then drives the connecting rod 16 to reciprocate along the motor shaft direction to compress the fluid pump chamber, thereby cyclically increasing and decreasing the volume of the fluid pump chamber. The fluid pump chamber, together with the inlet check valve 4 and the outlet check valve 13, forms a one-way water circuit. The change in the volume of the fluid pump chamber causes the liquid to flow from the pump body inlet to the pump body outlet, and the water pump performs the pumping operation.

[0026] The following points need to be explained: (1) The accompanying drawings of the embodiments of this disclosure only involve the structures involved in the embodiments of this disclosure. Other structures can be referred to the general design.

[0027] (2) Where there is no conflict, features of the same embodiment and different embodiments of this disclosure can be combined with each other.

[0028] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A diaphragm water pump, characterized in that, include: Pump body (8), on which a diaphragm (6) is provided; The pump head includes an upper cover (2) and a valve plate (5). The valve plate (5) is disposed on the pump body (8). The upper cover (2) is disposed on the valve plate (5). The valve plate (5) has a fluid pump chamber. The upper cover (2) and the valve plate (5) have an intake channel and an exhaust channel that communicate with the fluid pump chamber. The intake channel is provided with an inlet check valve (4), and the exhaust channel is provided with an outlet check valve (13). Motor (12), said motor (12) is located at the end of the pump body (8) away from the pump head; The gear transmission assembly includes a motor gear (11) fixed on the output shaft of the motor (12) and an eccentric gear (7) that meshes perpendicularly with the motor gear (11). An eccentric gear shaft (9) is fixed at the center of the eccentric gear (7), and both ends of the eccentric gear shaft (9) are mounted on the pump body (8) through bearings. The connecting rod (16) has an eccentric gear (7) and a diaphragm (6) connected to its two ends respectively.

2. The diaphragm water pump according to claim 1, characterized in that, The bearing is a ball bearing (10) or an oil-impregnated bearing (17).

3. The diaphragm water pump according to claim 1, characterized in that, The upper cover (2) is provided with an ultrasonic cover (1), which is fixedly connected to the upper cover (2) by ultrasonic welding.

4. The diaphragm water pump according to claim 1, characterized in that, A sealing gasket (3) is provided between the upper cover (2) and the valve plate (5).

5. The diaphragm water pump according to claim 1, characterized in that, The connecting rod (16) and the diaphragm (6) are fixed by fasteners, which include screws (14) and nuts (15). The screws (14) pass through the diaphragm (6) and the connecting rod (16) in sequence and are threadedly connected to the nuts (15) to fasten the diaphragm (6) and the connecting rod (16) into one unit.

6. An oral hygiene appliance, characterized in that, Including the diaphragm water pump as described in any one of claims 1-5.

Images