Water flosser pump

Abstract

The present invention relates to a water pump for a water flosser, comprising a shell, a transmission mechanism group, a sleeve, and a water spray valve group; the shell has a transmission mechanism group space and a water pump space that are interconnected; the transmission mechanism group has an electric motor, a transmission gear group, and a transmission connecting rod, and the electric motor links the transmission connecting rod to perform reciprocating linear motion; the sleeve has a connecting piece inside, one end of the connecting piece is connected to the transmission connecting rod, and the other end is connected to a pushing piece, and a compressible sealing piece is sleeved on the outside of the connecting piece, and the two are arranged together in the sleeve; the water spray valve group has a main body that is connected to the shell, the main body has a water inlet space that is connected to a water inlet joint and a water outlet nozzle and is connected to the aforementioned water pump space, the water inlet space has a conical valve and a compression spring, the compression spring supports the conical valve, and one end of the conical valve can open or close the water outlet nozzle; the operation of the motor can control the water inlet and water outlet functions of the water spray valve group.

Description

Technical Field

[0001] The present invention relates to a water pump for a dental irrigator, and more particularly to a water pump for a dental irrigator that can control water pumping or spraying with only a single water valve. Background Art

[0002] In existing dental irrigators, in order to achieve the effect of rinsing teeth and dental floss, a thin water column with a certain force needs to be ejected from the water spray nozzle. There is a water pump in the existing dental irrigator. By driving the unit to push and pull the piston 1 of the water pump, a corresponding independent inlet valve 2a and an outlet valve 2b are opened and closed to pump water and discharge water (see Figure 1a ).

[0003] However, in existing dental irrigator water pumps, the soft rubber 11 on the side of the piston 1 and the inner side wall of the water storage cavity of the water pump are in an interference fit to form a sealed space. The piston 1 makes pumping and pushing movements to pump water and push water; therefore, the water pump will be affected by the loose fit between the soft rubber 11 on the side of the piston 1 and the side wall of the water storage cavity of the water pump, affecting the airtightness, and water will leak out from the side of the piston 1 during water pumping and pushing. If the fit is too tight, the friction force will be too large, resulting in overheating of the water pump cavity, and at the same time causing an increase in the power consumption and heat generation of the motor, affecting the life of the motor and the equipment; the soft rubber 11 on the side of the piston 1 will wear out after long-term operation, and water will also leak from the side of the piston 1 (see Figure 1b ).

[0004] The inlet valve 2a and the outlet valve 2b of the existing dental irrigator water pump are separate independent bodies, which need to be assembled separately, with complex assembly, many spare parts, high material costs and production costs.

[0005] Therefore, how to solve the existing deficiencies is the primary goal of those skilled in the art. Summary of the Invention

[0006] Therefore, in order to effectively solve the above problems, the main object of the present invention is to provide a water pump for a dental irrigator that can control water pumping and spraying inside the dental irrigator with only a single valve body, and can prevent overheating and increase the service life of the water pump.

[0007] To achieve the above object, the present invention provides a water pump for a dental irrigator, having: a housing, a transmission mechanism group, a sleeve, and a water spray valve group;

[0008] The housing has a transmission mechanism group space and a water pump space and the two are interconnected; the transmission mechanism group has an electric motor, a transmission gear group and a transmission connecting rod, the electric motor has a transmission shaft and is sleeved with a main transmission bevel gear, the transmission gear group has a driven bevel gear and links the transmission connecting rod to make reciprocating linear motion; the sleeve has a connecting piece inside, one end of the connecting piece is connected to the transmission connecting rod, and the other end is connected to a pushing piece, the outside of the connecting piece is sleeved with a compressible sealing piece, and the two are arranged together in the sleeve; the spray The water valve group has a main body connected to the shell, the main body has a water inlet space connected to a water inlet joint and a water outlet nozzle and connected to the aforementioned water pump space, the water inlet space has a conical valve and a compression spring, one end of the compression spring is supported on the water inlet space close to the water inlet, and the other end supports the conical valve, one end of the conical valve can open or close the water outlet nozzle; the transmission gear group is driven by the operation of the motor to force the linkage to open or close the conical valve through linear motion, thereby controlling the water inlet and water outlet functions of the water spray valve group.

[0009] The water pump for the oral irrigator, wherein: the conical valve has a fixed end and a valve body head, the water inlet channel is interconnected with the fixed end and the valve body head, the valve body head has a nozzle and an inclined conical surface, the inclined conical surface can correspondingly open or close the water flow channel of the water outlet nozzle, the conical valve is made of soft material and can be compressed and deformed, the nozzle has a through hole, and when the conical valve is deformed, the through hole of the nozzle can be opened or closed.

[0010] The water pump for the oral irrigator, wherein: the transmission gear group also has an axis, the axis is inserted in the space of the transmission mechanism group, an axis sleeve protrudes from the center of the driven bevel gear and has an axis hole, and is pivotally connected to the axis through the axis hole, and the transmission connecting rod is outer-engaged with the axis sleeve.

[0011] The water pump for oral irrigator, wherein: one end of the linkage is pivotally connected to the transmission connecting rod through a shaft rod, and the other end of the linkage is connected to the pushing member through a shaft rod.

[0012] The water pump for oral irrigator, wherein: the nozzle is in a flat straight shape or a cross shape.

[0013] The water pump for the oral irrigator, wherein: the body of the water spray valve group is formed by an upper cover body and a lower cover body.

[0014] The water pump for the oral irrigator, wherein: the water inlet joint and the water outlet nozzle are respectively provided with a water flow channel.

[0015] The water pump for the oral irrigator, wherein: the driven helical gear is an umbrella-shaped helical gear.

[0016] The water pump for oral irrigator, wherein: the axial sleeve and the driven helical gear are eccentrically arranged.

[0017] The main advantage of the present invention is that only one valve member is required to control the water inlet or outlet action, and through the transmission of the transmission mechanism group, it can solve the problems caused by the traditional piston-type pumping method for controlling water inlet and outlet, such as increased motor power consumption, increased heat generation, wear of the soft rubber on the side of the piston during long-term operation, and water leakage from the side of the piston. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1a is a schematic cross-sectional view of the prior art;

[0019] Figure 1b is a schematic cross-sectional view of the prior art;

[0020] Figure 2 is an exploded perspective view of the water pump of the dental irrigator of the present invention;

[0021] Figure 3 is a combined cross-sectional view of the water pump of the dental irrigator of the present invention;

[0022] Figure 4 is a combined cross-sectional view of the water pump of the dental irrigator of the present invention;

[0023] Figure 5 is a combined cross-sectional view of the water pump of the dental irrigator of the present invention.

[0024] Description of the reference numerals in the drawings: piston - 1; side soft rubber - 11; water inlet valve - 2a; water outlet valve - 2b; housing - 3; transmission mechanism group space - 31; water pump space - 32; transmission mechanism group - 4; motor - 41; transmission shaft - 411; transmission gear group - 42; driven bevel gear - 421; shaft sleeve - 4211; shaft hole - 4212; shaft center - 422; transmission connecting rod 43; main driving bevel gear - 44; sleeve - 5; linkage member - 51; shaft rod - 511; pushing member 52; compressible seal - 53; water spray valve group - 6; body - 61; upper cover - 611; lower cover - 612; water inlet space - 613; water inlet joint 614; water outlet nozzle - 615; water flow channel - 616; conical valve - 62; fixed end - 621; valve body head - 622; nozzle - 6221; inclined conical surface - 6222; through hole - 6223; water inlet channel - 623; compression spring - 63; liquid - 7. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0025] The above objects, structures and functional characteristics of the present invention will be described with reference to the preferred embodiments shown in the accompanying drawings.

[0026] Please refer to Figure 2 , Figure 3 , Figure 4 , Figure 5, which is a three-dimensional exploded and combined cross-sectional view of a water pump for a water flosser of the present invention. As shown in the figure, the present invention provides a water pump for a water flosser, comprising: a housing 3, a transmission mechanism group 4, a sleeve 5, and a water spray valve group 6;

[0027] The housing 3 has a transmission mechanism group space 31 and a water pump space 32, and the transmission mechanism group space 31 and the water pump space 32 are connected to each other; the transmission mechanism group 4 has an electric motor 41, a transmission gear group 42 and a transmission connecting rod 43, the electric motor 41 has a transmission shaft 411 and is sleeved with a main transmission bevel gear 44, the transmission gear group 42 has a driven bevel gear 421 and links the transmission connecting rod 43 to perform reciprocating linear motion, and the driven bevel gear 421 is an umbrella-shaped bevel gear.

[0028] The transmission gear set 42 further has an axis 422, which is inserted into the transmission mechanism set space 31. An axis sleeve 4211 protrudes from the center of the driven bevel gear 421 and has an axis hole 4212. The axis sleeve 4211 is eccentrically arranged with the driven bevel gear 421 and is pivotally connected to the axis 422 through the axis hole 4212. The axis sleeve 4211 is outer-engaged with the transmission connecting rod 43.

[0029] The sleeve 5 has a connecting piece 51 inside, one end of the connecting piece 51 is connected to the transmission connecting rod 43, and the other end is connected to a pushing piece 52. One end of the connecting piece 51 is pivotally connected to the transmission connecting rod 43 through an axle rod 511, and a compressible sealing piece 53 is sleeved on the outside of the connecting piece 51. The connecting piece 51 and the compressible sealing piece 53 are arranged together in the sleeve 5, and the sleeve 5 is arranged in the water pump space 32.

[0030] The water spray valve group 6 has a main body 61 connected to the shell 3, and the main body 61 is formed by a combination of an upper cover body 611 and a lower cover body 612. The main body 61 has a water inlet space 613 connected to a water inlet joint 614 and a water outlet nozzle 615. The water inlet joint 614 and the water outlet nozzle 615 respectively have a water flow channel 616 and are connected to the aforementioned water inlet space 613, and the water inlet space 613 is connected to the aforementioned water pump space 32. The water inlet space 613 has a conical valve 62 and a compression spring 63. One end of the compression spring 63 is supported on the water inlet space 613 close to the water inlet joint 614, and the other end supports the conical valve 62. One end of the conical valve 62 can open or close the water outlet nozzle 615.

[0031] The conical valve 62 has a fixed end 621, a valve body head 622, and a water inlet passage 623. The water inlet passage 623 communicates with the fixed end 621 and the valve body head 622. The valve body head 622 has a nozzle 6221 and an inclined conical surface 6222. The inclined conical surface 6222 can correspondingly open or close the water flow passage 616 of the water outlet nozzle 615. The conical valve 62 is made of a soft material and can be compressed and deformed. The nozzle 6221 has a through hole 6223, and when the conical valve 62 is deformed, the through hole 6223 of the nozzle 6221 can be opened or closed. The nozzle 6221 is in a flat linear shape or a cross shape.

[0032] In the present invention, first, the liquid 7 is introduced into the water inlet space 613 by the water inlet joint 614 of the water spraying valve group 6. At the same time, the liquid 7 is injected into the water pump space 32 through the nozzle 6221 of the conical valve 62. The motor 41 (motor) operates to drive the transmission shaft 411, and the transmission shaft 411 rotates to drive the main transmission bevel gear 44 sleeved on the transmission shaft 411. Then, the main transmission bevel gear 44 drives the driven bevel gear 421 meshing with the main transmission bevel gear 44. When the driven bevel gear 421 rotates, it drives the transmission connecting rod 43 sleeved on the central sleeve 4211 of the driven bevel gear 421 to perform a reciprocating linear motion. When the transmission connecting rod 43 performs a reciprocating linear motion, it pushes or pulls back the linkage 51 and the pushing member 52. When the pushing member 52 is pushed out by the transmission connecting rod 43, the compressible seal 53 sleeved outside the linkage 51 and the pushing member 52 will be compressed, so that the water pump space 32 is compressed. The liquid 7 filled in the water pump space 32 pushes the conical valve 62 to displace, and at the same time, the conical valve 62 is deformed to close the through hole 6223 of the nozzle 6221, and then the water flow passage 616 of the water outlet nozzle 615 originally closed by the conical valve 62 is opened, so that the internal liquid 7 is sprayed out towards the water outlet nozzle 615.

[0033] The main advantage of the present invention is that only one valve member is required to control the water inlet or water outlet action. And through the transmission of the transmission mechanism group, it can solve the problems caused by the traditional piston-type water pumping method for controlling water inlet and outlet, such as increased motor power consumption, increased heat generation, wear of the soft rubber on the side of the piston during long-term operation, and water leakage from the side of the piston.

Claims

1. An oral irrigator water pump, characterized in that, Include: A housing having a transmission mechanism group space and a water pump space which are interconnected; A transmission mechanism group, comprising an electric motor, a transmission gear group and a transmission connecting rod, wherein the electric motor has a transmission shaft and is sleeved with a main transmission helical gear, and the transmission gear group has a driven helical gear and links the transmission connecting rod to perform reciprocating linear motion; A sleeve having a linkage inside, one end of the linkage is connected to the transmission connecting rod, and the other end is connected to a pusher, and a compressible seal is sleeved outside the linkage, the linkage and the compressible seal are arranged together in the sleeve, and the sleeve is arranged in the water pump space; A water spray valve assembly, comprising a body connected to the housing, the body having a water inlet space, the water inlet space connected to a water inlet joint and a water outlet nozzle, the water inlet space connected to the aforementioned water pump space, a conical valve and a compression spring in the water inlet space, one end of the compression spring supporting the water inlet space close to the water inlet joint, and the other end supporting the conical valve, one end of the conical valve can open or close the water outlet nozzle; the motor drives the transmission gear set to force the linkage to open or close the conical valve through linear motion to control the water inlet and water outlet functions of the water spray valve assembly; Among them, the conical valve has a fixed end and a valve body head, the water inlet channel is connected to the fixed end and the valve body head, the valve body head has a nozzle and an inclined conical surface, the inclined conical surface can correspondingly open or close the water flow channel of the water outlet nozzle, the conical valve is made of soft material and can be compressed and deformed, the nozzle has a through hole, and when the conical valve is deformed, the through hole of the nozzle can be opened or closed.

2. The water flosser water pump according to claim 1, wherein: The transmission gear set also has an axis, which is inserted in the space of the transmission mechanism set. An axis sleeve protrudes from the center of the driven helical gear and has an axis hole, and is pivotally connected to the axis through the axis hole. The axis sleeve is outer-engaged with the transmission connecting rod.

3. The water flosser pump according to claim 1, wherein: One end of the linkage is pivotally arranged with the transmission connecting rod through a shaft rod, and the other end of the linkage is connected with the pushing member through a shaft rod.

4. The water flosser pump according to claim 1, characterized in that: The nozzle is in a flat straight shape or a cross shape.

5. The water flosser pump according to claim 1, wherein: The main body of the water spray valve assembly is formed by an upper cover body and a lower cover body.

6. The water flosser pump according to claim 1, wherein: The water inlet joint and the water outlet nozzle are respectively provided with a water flow channel.

7. The water flosser pump according to claim 1, wherein: The driven helical gear is a bevel helical gear.

8. The water flosser pump according to claim 1, wherein: The shaft sleeve and the driven helical gear are eccentrically arranged.

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