Water pump for oral irrigator and oral irrigator with water pump

Abstract

The utility model discloses a water pump of an oral irrigator and the oral irrigator. The water pump of the oral irrigator comprises a water pump shell, the water pump motor is mounted in the water pump shell; the transmission gear is in transmission connection with the water pump motor, and a cam is formed on one side of the transmission gear; the transmission cover is installed in the water pump shell, one end of the transmission cover is connected with a piston rod, and the cam is in transmission connection with the transmission cover; the transmission cover is matched with the cam and reciprocates in the axial direction of the water outlet, the piston rod is movably installed on the water outlet mechanism, and the piston rod reciprocates along with the transmission cover to squeeze water flow in the water flow channel to be discharged out of the water outlet. The water pump of the oral irrigator has the advantages of being high in stability, good in flushing effect and the like.

Description

Technical Field

[0001] This utility model relates to the field of dental floss equipment technology, and in particular to a dental floss pump and a dental floss device having the same. Background Technology

[0002] In related technologies, oral irrigator pumps use a pump motor to drive a transmission gear, and the water outlet mechanism can squeeze the water flow channel according to the driving force to force the water to flow out of the outlet. However, there is no fixed mechanism around the transmission gear, and the connection between the transmission gear and other components may not be stable enough. This can cause the moving rod to deviate or reciprocate unevenly during the movement, affecting the stability of the water flow output and resulting in poor rinsing effect of the oral irrigator pump. Utility Model Content

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one objective of the present invention is to provide a water pump for a dental irrigator that has advantages such as high stability and good rinsing effect.

[0004] Another objective of this invention is to provide a dental flosser having the aforementioned dental flosser pump.

[0005] According to a first aspect of the present invention, a water pump for a dental irrigator includes: a water pump housing; a water pump motor installed inside the water pump housing; a transmission gear drivingly connected to the water pump motor, with a cam formed on one side of the transmission gear; a transmission cover installed inside the water pump housing, with a piston rod connected to one end of the transmission cover, and the cam drivingly connected to the transmission cover; and a water outlet mechanism having an inlet and an outlet, the inlet and outlet communicating to form a water flow channel, the transmission cover engaging with the cam and reciprocating along the axial direction of the outlet, the piston rod being movably installed on the water outlet mechanism, and the piston rod reciprocating with the transmission cover to squeeze the water in the water flow channel out of the outlet.

[0006] According to some embodiments of the present invention, the transmission gear includes: a driving gear connected to the motor shaft of the motor; and a driven gear meshing with the driving gear, wherein a cam is constructed on one side of the driven gear.

[0007] According to some embodiments of this utility model, the driving gear is a bevel gear and the driven gear is a conical gear.

[0008] According to some embodiments of the present invention, the transmission cover is constructed with an elongated hole extending along the length direction of the piston rod. The elongated hole of the transmission cover is sleeved on the gear shaft of the driven gear, and the transmission cover is movable relative to the gear shaft of the driven gear through the elongated hole.

[0009] According to some embodiments of the present invention, the transmission cover has a receiving groove for accommodating the cam on the side facing the driven gear, and the elongated hole extends through the bottom of the receiving groove.

[0010] According to some embodiments of the present invention, the bottom surface of the receiving groove is constructed into a rectangle, the cam surface of the cam is engaged with the inner sidewall opposite to the width direction of the receiving groove, and the cam reciprocates along the length direction.

[0011] According to some embodiments of the present invention, the bottom surfaces of both the transmission cover and the receiving groove are constructed in a rectangular shape, and chamfers are constructed at the four corners of the outer contour of the transmission cover and the four corners of the inner contour of the receiving groove.

[0012] According to some embodiments of this utility model, the axial direction of the motor shaft of the water pump motor is the same as the direction of the reciprocating motion of the transmission cover.

[0013] According to some embodiments of the present invention, the transmission cover has a ball joint on the side facing the water outlet mechanism, the piston rod has a universal joint, the ball joint is sleeved on the universal joint, and the transmission cover can swing relative to the universal joint through the ball joint.

[0014] The oral irrigator according to a second aspect of the present invention includes the oral irrigator water pump according to the first aspect of the present invention described above.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1 This is a structural schematic diagram of the water pump for a dental flosser according to an embodiment of the present invention;

[0018] Figure 2 This is an exploded view of the water pump of the oral irrigator according to an embodiment of the present utility model;

[0019] Figure 3 This is a cross-sectional view of the water pump for a dental flosser according to an embodiment of the present utility model;

[0020] Figure 4 This is a schematic diagram of the transmission cover of the water pump for a dental irrigator according to an embodiment of the present invention.

[0021] Figure label:

[0022] Oral irrigator pump 1, pump housing 100, pump motor 200, transmission gear 300, transmission cover 400.

[0023] Water outlet mechanism 500, drive gear 310, driven gear 320, cam 301, gear shaft 302.

[0024] Piston rod 410, universal joint 411, elongated hole 401, receiving groove 402, ball joint 403. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0026] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] In the description of this utility model, "first feature" and "second feature" may include one or more of the features.

[0028] In the description of this utility model, "multiple" means two or more, and "several" means one or more.

[0029] The following description, with reference to the accompanying drawings, describes a water pump 1 for a dental flosser according to an embodiment of the present invention.

[0030] like Figures 1-4 As shown, the water flosser pump 1 according to the first aspect of the present invention includes a water pump housing 100, a water pump motor 200, a transmission gear 300, a transmission cover 400, and a water outlet mechanism 500.

[0031] A water pump motor 200 is installed inside a water pump housing 100. A transmission gear 300 is connected to the water pump motor 200, and a cam 301 is formed on one side of the transmission gear 300. A transmission cover 400 is installed inside the water pump housing 100, and a piston rod 410 is connected to one end of the transmission cover 400. The cam 301 is connected to the transmission cover 400. The water outlet mechanism 500 has an inlet and an outlet, which are connected to form a water flow channel. The transmission cover 400 is fitted with the cam 301 and reciprocates along the axial direction of the outlet. The piston rod 410 is movably installed in the water outlet mechanism 500, and the piston rod 410 reciprocates with the transmission cover 400 to squeeze the water in the water flow channel and discharge it from the outlet.

[0032] For example, the transmission gear 300 is rotatably connected to the water pump motor 200, converting the rotational power of the water pump motor 200 into mechanical energy. The cam 301 of the transmission gear 300 is connected to the transmission cover 400. The driving force of the water pump motor 200 causes the cam 301 to produce a circular motion, which is then converted into the reciprocating motion of the transmission cover 400. The piston rod 410 moves with the movement of the transmission cover 400. The piston rod 410 connected to the transmission cover 400 moves along its axial direction to squeeze the water flow channel in the water outlet mechanism 500, thereby pushing the water flow to be discharged in the direction of the outlet.

[0033] According to the water pump 1 of the water flosser in this embodiment of the utility model, the cam 301 makes a circular motion under the driving force of the water pump motor 200 and the transmission gear 300. The cam 301 drives the transmission cover 400 to make a smooth reciprocating motion. Through the cooperation between the transmission cover 400 and the cam 301, the transmission cover 400 converts the swing motion of the cam 301 into linear motion, ensuring stability in the transmission process, reducing the transmission energy loss caused by excessive swing of the cam 301, and reducing the generation of vibration and noise. Meanwhile, the transmission cover 400 is not only connected to the cam 301, but also stably installed inside the water pump housing 100, providing guidance for the piston rod 410 of the transmission cover 400. This ensures that the transmission cover 400 maintains a straight reciprocating motion during movement, avoiding any shaking or instability. During the rotation of the transmission gear 300, the transmission cover 400 moves in coordination with the cam 301, limiting the range of reciprocating motion. This allows the water outlet mechanism to continuously squeeze out water flow, making the movement of the piston rod 410 more stable and ensuring consistent water output, thus guaranteeing the reliable operation of the water pump 1 for the oral irrigator.

[0034] When the transmission cover 400 drives the piston rod 410 to reciprocate, the piston rod 410 can move along a predetermined trajectory due to the guiding device of the water outlet mechanism 500. This makes the water flow in the water channel more evenly compressed, and the water outlet mechanism 500 can efficiently discharge the water, thereby improving the rinsing effect. Through the good cooperation between the transmission gear 300 and the transmission cover 400 and other components, the movement of the entire structure of the water pump 1 of the oral irrigator is more coordinated, thereby achieving efficient and stable water flow output and providing a better rinsing experience.

[0035] Therefore, the water pump 1 of the oral irrigator according to the present invention has the advantages of high stability and good rinsing effect.

[0036] In some optional embodiments of this utility model, such as Figure 2 As shown, the transmission gear 300 includes a driving gear 310 and a driven gear 320. The driving gear 310 is connected to the motor shaft of the water pump motor 200. The driven gear 320 meshes with the driving gear 310, and a cam 301 is constructed on one side of the driven gear 320.

[0037] For example, the rotation axes of the drive gear 310 and the driven gear 320 are perpendicular to each other. The drive gear 310 transmits power to the driven gear 320 through the motor shaft of the water pump motor 200. The cam 301 on the driven gear 320 then drives the transmission cover 400 to move, ensuring that the power is efficiently transmitted to the water outlet mechanism 500, thereby improving the working efficiency of the entire water pump 1 of the oral irrigator.

[0038] Furthermore, the water pressure can be adjusted by controlling the speed of the water pump motor 200, allowing the water pump 1 of the oral irrigator to adjust the water flow intensity according to different needs, providing a more flexible user experience.

[0039] In some optional embodiments of this utility model, such as Figure 2 As shown, the driving gear 310 is a bevel gear, and the driven gear 320 is a conical gear. Among them, the driving gear 310 is a helical gear.

[0040] For example, the water pump motor 200 drives the drive gear 310 to rotate. When the drive gear 310 starts to rotate, its bevel gear teeth contact the driven gear 320 teeth. Because the bevel gear and the conical gear mesh with each other, transmission in different directions is achieved. The rotation of the drive gear 310 causes the driven gear 320 to rotate as well. The rotation of the driven gear 320 further drives the components inside the water pump 1 of the oral irrigator, drawing in water and squeezing it out, thereby realizing the working function of the water pump 1 of the oral irrigator.

[0041] For example, both the driving gear 310 and the driven gear 320 can be helical gears. Through helical gear meshing, the driving gear 310 and the driven gear 320 have a larger contact area when meshing, thereby achieving smoother power transmission. The transmission between the driving gear 310 and the driven gear 320 is more reliable, thus ensuring the normal operation of the water pump 1 of the oral irrigator.

[0042] In some optional embodiments of this utility model, such as Figure 2 As shown, the transmission cover 400 is constructed with an elongated hole 401 extending along the length direction of the piston rod 410. The elongated hole 401 of the transmission cover 400 is sleeved on the gear shaft 302 of the driven gear 320. The transmission cover 400 is movable relative to the gear shaft 302 of the driven gear 320 through the elongated hole 401.

[0043] The transmission cover 400 is movable relative to the gear shaft of the driven gear 320 along the length direction of the elongated hole 401. The elongated hole 401 defines the movement path of the transmission cover 400 and avoids the gear shaft of the driven gear 320. The transmission cover 400 can move flexibly under the drive of the gear shaft 302, so that the rotation of the water pump motor 200 is converted into linear motion through the driving gear 310, the driven gear 320 and the cam 301, which improves the stability of the transmission and avoids movement restriction.

[0044] When the transmission cover 400 moves through the elongated hole 401, it can better maintain its connection with the piston rod 410 and ensure that the piston rod 410 always moves on the trajectory of the squeezed water flow, thereby improving the squeezing efficiency of the water flow, enhancing the rinsing effect of the water flow, and ensuring the cleaning ability of the water pump 1 of the oral irrigator.

[0045] In some optional embodiments of this utility model, such as Figure 2 and Figure 4 As shown, the transmission cover 400 has a receiving groove 402 for accommodating the cam 301 on the side facing the driven gear 320, and an elongated hole 401 extends through the bottom of the receiving groove 402. The receiving groove 402 ensures that the cam 301 is securely held within the transmission cover 400 during operation, thus preventing the cam 301 from shifting due to vibration or other factors, ensuring the stability and accuracy of the mechanical transmission. Simultaneously, the movement of the cam 301 within the receiving groove 402 reduces friction with other components, lowers wear, enhances the system's durability, and extends the equipment's service life.

[0046] In some optional embodiments of this utility model, such as Figure 4 As shown, the bottom surface of the receiving groove 402 is rectangular, the cam surface of the cam 301 is engaged with the inner sidewall of the receiving groove 402 in the width direction, and the cam 301 reciprocates along the length direction.

[0047] The rectangular receiving groove 402 defines the movement trajectory of the cam 301 on its side, ensuring that the cam 301 can accurately contact the inner wall in the width direction. This allows the transmission cover 400 to stably engage with the cam 301 and move along the trajectory of the extruded water flow, effectively converting rotary motion into reciprocating linear motion and achieving efficient power transmission. The rectangular receiving groove 402, in conjunction with the cam 301, also reduces the lateral sway of the cam 301 during movement, thereby increasing motion stability and helping to ensure smooth operation of the water pump 1 during the oral irrigator. Furthermore, the cam 301 being housed in the receiving groove 402 reduces the thickness of the water pump 1, which is beneficial for device miniaturization.

[0048] In some optional embodiments of this utility model, such as Figure 4 As shown, the bottom surfaces of both the transmission cover 400 and the receiving groove 402 are constructed in a rectangular shape, and chamfers are constructed at the four corners of the outer contour of the transmission cover 400 and the four corners of the inner contour of the receiving groove 402.

[0049] The chamfered structure reduces the risk of interference between the edges of the transmission cover 400 and other components during movement, facilitating installation. Furthermore, when the chamfer engages with the cam 301, the smooth transition ensures that the transmission cover 400's movement is not hindered by its right-angled edges, effectively preventing friction or jamming between components. Simultaneously, the chamfered corners are better suited to the cam 301 structure, resulting in a higher degree of compatibility and reducing the displacement of the cam 301 within the receiving groove 402, thus improving the overall stability of the water pump 1.

[0050] In some optional embodiments of this utility model, the axial direction of the motor shaft of the water pump motor 200 is the same as the direction of the reciprocating motion of the transmission cover 400, for example, they are on the same straight line.

[0051] When the motor shaft of the water pump motor 200 is aligned with the reciprocating motion direction of the transmission cover 400, power transmission is more direct, reducing energy loss. This structure maximizes transmission efficiency, ensuring that the power of the water pump motor 200 can efficiently drive the transmission cover 400 to work. The alignment of the motor shaft with the transmission cover 400 reduces friction and impact caused by misalignment, effectively reducing wear on mechanical parts and extending the service life of the water pump 1.

[0052] In some optional embodiments of this utility model, such as Figure 1 and Figure 2 As shown, the transmission cover 400 has a ball joint 403 on the side facing the water outlet mechanism 500, and the piston rod 410 has a universal joint 411. The ball joint 403 is sleeved on the universal joint 411, and the transmission cover 400 can swing relative to the universal joint 411 through the ball joint 403.

[0053] The combination of the ball joint 403 and the universal joint 411 allows the drive cover 400 to swing in multiple directions. This flexibility allows the water pump 1 of the oral irrigator to better adapt to various positions and angles inside the oral cavity during use, making it easier for users to operate and improving the user experience. Through the swinging of the ball joint 403, users can more easily control the direction of water flow, thus accurately aiming at the areas that need cleaning, especially when cleaning hard-to-reach areas, significantly improving the rinsing effect.

[0054] The following describes a water flosser according to an embodiment of the present invention.

[0055] The oral irrigator according to the present invention includes the oral irrigator water pump 1 of the above-described embodiments of the present invention.

[0056] The oral irrigator according to the present invention has advantages such as high stability and good rinsing effect by utilizing the water pump 1 of the oral irrigator in the above embodiment of the present invention.

[0057] The water pump 1 and other components and operations of the oral irrigator according to the embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0058] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0059] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An oral irrigator water pump, characterized by, The utility model provides a water pump of oral irrigator, comprising: a water pump housing; a water pump motor installed in the water pump housing; a transmission gear in transmission connection with the water pump motor, one side of the transmission gear being formed with a cam; a transmission cover installed in the water pump housing, one end of the transmission cover being connected with a piston rod, the cam being in transmission connection with the transmission cover; a water outlet mechanism configured with a water inlet and a water outlet, the water inlet being in communication with the water outlet to form a water flow channel, the transmission cover being fitted to the cam and reciprocating along the axial direction of the water outlet, the piston rod being movably installed in the water outlet mechanism, the piston rod reciprocating with the transmission cover to extrude the water flow in the water flow channel to discharge the water outlet.

2. The oral irrigator water pump of claim 1, wherein, The transmission gear comprises: a driving gear connected to the motor shaft of the water pump motor; a driven gear in meshing connection with the driving gear, one side of the driven gear being configured with the cam.

3. The oral irrigator water pump of claim 2, wherein, The driving gear is an umbrella-shaped gear, and the driven gear is a conical gear.

4. The oral irrigator water pump of claim 2, wherein, The transmission cover is configured with an elongated hole extending along the length direction of the piston rod, the elongated hole of the transmission cover being sleeved on the gear shaft of the driven gear, the transmission cover being movable relative to the gear shaft of the driven gear through the elongated hole.

5. The oral irrigator water pump of claim 4, wherein, One side of the transmission cover facing the driven gear is configured with a receiving groove accommodating the cam, the elongated hole being through the groove bottom of the receiving groove.

6. The oral irrigator water pump of claim 5, wherein, The bottom surface of the receiving groove is configured in a rectangular shape, the cam surface of the cam being fitted to the opposite inner side walls of the receiving groove in the width direction, and the cam reciprocating along the length direction.

7. The oral irrigator water pump of claim 6, wherein, Both the transmission cover and the bottom surface of the receiving groove are configured in a rectangular shape, each of the four corners of the outer contour of the transmission cover and the four corners of the inner contour of the receiving groove being configured with a chamfer.

8. The oral irrigator water pump of claim 1, wherein, The axial direction of the motor shaft of the water pump motor and the reciprocating direction of the transmission cover are the same.

9. The oral irrigator water pump of claim 1, wherein, One side of the transmission cover facing the water outlet mechanism is configured with a ball joint, the piston rod being configured with a universal joint, the ball joint being sleeved on the universal joint, the transmission cover being swingable relative to the universal joint through the ball joint.

10. An oral irrigator characterized by, The utility model provides a water pump of oral irrigator. The utility model discloses a water pump of oral irrigator.

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