Water pump structure and oral irrigator

Abstract

The utility model is suitable for the technical field of oral cavity cleaning, and discloses a water pump structure and a water pick. The water pump structure can be applied to the oral irrigator and comprises a shell, a driving mechanism, a transmission mechanism, a piston and a pump body. The driving mechanism, the transmission mechanism, the piston and the pump body are all mounted in the shell, the piston is slidably mounted in the pump body, the transmission mechanism is in transmission connection between the piston and the driving mechanism, and the driving mechanism is used for driving the transmission mechanism to move so as to drive the piston to reciprocate in the extending direction of the pump body. The transmission mechanism extends in the extending direction of the pump body, and an included angle is formed between the extending direction of the driving mechanism and the extending direction of the pump body. According to the water pump structure, compared with the technical scheme that the extension direction of the driving mechanism is the same as that of the pump body, the length of the whole water pump structure in the extension direction of the pump body can be reduced, and miniaturization development of the water pump structure is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to oral cavity cleaning technical field especially, relate to a water pump structure and oral irrigator. BACKGROUND

[0002] With the progress of science and technology and the development of social economy, oral care has been paid more and more attention by consumers. Oral irrigator as a daily cleaning tool of oral cavity can clean teeth and dental crevice by using the mode of pulse water flow impact, wherein the water pump in the oral irrigator plays the role of water pressure lifting, so that the nozzle of the oral irrigator can spray water flow with certain pressure. At present, the reciprocating water pump in the related technology is too long due to the limitation of design, which is not conducive to the miniaturization development of oral irrigator. SUMMARY

[0003] The application provides a water pump structure and oral irrigator, which aims to solve the technical problem that the existing water pump structure is not conducive to miniaturization development.

[0004] According to the first aspect of the application, a water pump structure is provided in an embodiment, which is applied to an oral irrigator and includes a shell, a driving mechanism, a transmission mechanism, a piston and a pump body.

[0005] The driving mechanism, the transmission mechanism, the piston and the pump body are all installed in the shell, the piston is slidingly installed in the pump body, the transmission mechanism is drivingly connected between the piston and the driving mechanism, and the driving mechanism is used to drive the transmission mechanism to move, so as to drive the piston to reciprocate along the extension direction of the pump body.

[0006] Among them, the transmission mechanism extends along the extension direction of the pump body, and the extension direction of the driving mechanism is arranged at an angle with the extension direction of the pump body.

[0007] In an embodiment, the angle is greater than or equal to 20° and less than or equal to 60°.

[0008] In an embodiment, the angle is 30°.

[0009] In an embodiment, the driving mechanism includes a motor and a worm, the worm is connected to the output end of the motor, and the extension direction of the worm is arranged at the angle with the extension direction of the pump body.

[0010] The transmission mechanism comprises a connecting rod, a cam and a gear, one end of the connecting rod is in transmission connection with the piston, the other end of the connecting rod is in transmission connection with the cam, the connecting rod extends along the extension direction of the pump body, the cam is eccentrically connected to the gear along the axial direction of the gear, and the gear is in meshing connection with the worm.

[0011] In one embodiment, the gear comprises a first side and a second side arranged oppositely along the direction perpendicular to the extension direction of the connecting rod, and the worm is in meshing connection with the first side of the gear or the second side of the gear.

[0012] In one embodiment, the gear is a worm gear or a helical gear; and / or,

[0013] The worm is a multi-start worm.

[0014] In one embodiment, the cam is eccentrically protruded from one end of the gear along the axial direction of the gear;

[0015] One end of the connecting rod away from the piston is provided with a mounting hole, and the cam is fixedly installed in the mounting hole.

[0016] In one embodiment, two cams are provided, and the two cams are respectively eccentrically protruded from opposite ends of the gear along the axial direction of the gear and are arranged oppositely.

[0017] One end of the connecting rod away from the piston is provided with two mounting holes, the two mounting holes are arranged oppositely along the direction perpendicular to the extension direction of the connecting rod, and each cam is fixedly installed in one mounting hole.

[0018] In one embodiment, the housing comprises a first shell and a second shell.

[0019] The transmission mechanism further comprises a connecting shaft, the connecting shaft is arranged through the gear and the cam, and is coaxial with the central axis of the gear, one end of the connecting shaft is in rotary connection with the first shell, and the other end of the connecting shaft is in rotary connection with the second shell.

[0020] According to the second aspect of the present application, in one embodiment, a water pick is provided, comprising the water pump structure of the first aspect.

[0021] According to the water pump structure and oral irrigator provided in the above embodiment, the extension direction of the transmission mechanism is the same as the extension direction of the pump body, and the extension direction of the pump body is regarded as the extension direction of the entire water pump structure, that is, the length direction of the water pump structure. The extension direction of the driving mechanism is arranged at an angle with the extension direction of the pump body, compared with the technical solution in which the extension direction of the driving mechanism is the same as the extension direction of the pump body, the length of the entire water pump structure in the extension direction of the pump body can be reduced, thereby being beneficial to the miniaturization development of the water pump structure. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the structures shown in these drawings without creative labor.

[0023] Figure 1 is a structural schematic view of the water pump structure provided in the embodiment one of the present application;

[0024] Figure 2 is an exploded view of the water pump structure provided in the embodiment one of the present application;

[0025] Figure 3 is a top view of the first side of the worm meshing connection with the gear provided in the embodiment one of the present application;

[0026] Figure 4 is a top view of the second side of the worm meshing connection with the gear provided in the embodiment one of the present application;

[0027] Figure 5 is an exploded view of the transmission mechanism provided in the embodiment one of the present application;

[0028] Figure 6 is a structural schematic view of the connecting rod provided in the embodiment one of the present application;

[0029] Figure 7 is an exploded view of the transmission mechanism provided in the embodiment two of the present application.

[0030] BRIEF DESCRIPTION OF DRAWINGS

[0031] 100, water pump structure; 10, housing; 11, first housing; 12, second housing; 20, driving mechanism; 21, motor; 22, worm; 30, transmission mechanism; 31, connecting rod; 311, connecting body; 312, first connecting part; 313, second connecting part; 314, mounting hole; 32, cam; 33, gear; 331, first side; 332, second side; 34, connecting shaft; 40, piston; 50, pump body.

[0032] The realization, functional features and advantages of the utility model will be further described with reference to the drawings in combination with embodiments. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0034] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the utility model are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture, and if the specific posture changes, the directional indications also change accordingly.

[0035] It should also be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or can have a middle element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or can have a middle element.

[0036] In addition, the description of "first", "second" and the like in the utility model is only for the purpose of description, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the person skilled in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0037] Oral irrigators use pulsed water jets to clean teeth and between teeth, and are gradually gaining popularity. The water pump, as a component that increases water pressure, is an essential part of oral irrigators. To facilitate daily use, oral irrigators are becoming increasingly smaller, but the water pump, due to design limitations, is too long, hindering further miniaturization.

[0038] In view of this, the present invention provides a water pump structure and a water flosser for use in oral irrigators, which can shorten the length of the water pump structure and contribute to the miniaturization of oral irrigators.

[0039] like Figures 1 to 3 As shown, the water pump structure 100 provided in this embodiment of the present invention can be applied to a dental flosser. The water pump structure 100 includes a housing 10, a drive mechanism 20, a transmission mechanism 30, a piston 40, and a pump body 50. The drive mechanism 20, transmission mechanism 30, piston 40, and pump body 50 are all installed inside the housing 10. The piston 40 is slidably installed inside the pump body 50. The transmission mechanism 30 is drively connected between the piston 40 and the drive mechanism 20. The drive mechanism 20 is used to drive the transmission mechanism 30 to move, thereby causing the piston 40 to reciprocate along the extension direction of the pump body 50. The transmission mechanism 30 extends along the extension direction of the pump body 50, and the extension direction of the drive mechanism 20 is set at an angle α with the extension direction of the pump body 50.

[0040] By adopting the above technical solution, the transmission mechanism 30 extends along the extension direction of the pump body 50, that is, the extension direction of the transmission mechanism 30 is the same as the extension direction of the pump body 50. Therefore, when the drive mechanism 20 drives the transmission mechanism 30, it facilitates the reciprocating motion of the piston 40 along the extension direction of the pump body 50. Furthermore, since the extension direction of the transmission mechanism 30 is the same as the extension direction of the pump body 50, the extension direction of the pump body 50 can be considered as the extension direction of the entire water pump structure 100, that is, the length direction of the water pump structure 100. By setting the extension direction of the drive mechanism 20 at an angle to the extension direction of the pump body 50, compared to the technical solution where the extension direction of the drive mechanism 20 is the same as the extension direction of the pump body 50, the length of the entire water pump structure 100 in the extension direction of the pump body 50 can be reduced, thereby facilitating the miniaturization of the water pump structure 100.

[0041] In one embodiment, the included angle α is greater than or equal to 20° and less than or equal to 60°. This setting reduces the overall length dimension of the pump structure 100 while preventing it from becoming too large in the width dimension. Preferably, the included angle α is 30°. In specific implementations, the included angle α can also be set to 40° or 50°, etc., depending on the specific circumstances.

[0042] Please see Figure 3 and Figure 5The driving mechanism 20 comprises a motor 21 and a worm 22, the worm 22 is connected to the output end of the motor 21, and the extension direction of the worm 22 is arranged at an angle a with the extension direction of the pump body 50. The transmission mechanism 30 comprises a connecting rod 31, a cam 32 and a gear 33, one end of the connecting rod 31 is drivingly connected to the piston 40, the other end is drivingly connected to the cam 32, the connecting rod 31 extends along the extension direction of the pump body 50, the cam 32 is eccentrically connected to the gear 33 along the axial direction of the gear 33, and the gear 33 is meshingly connected with the worm 22; the gear 33 is used for rotating under the driving of the worm 22 to drive the cam 32 to eccentrically rotate, and then drive the connecting rod 31 and the piston 40 to reciprocate along the extension direction of the pump body 50.

[0043] In specific implementation, the motor 21 drives the worm 22 to rotate, the rotation of the worm 22 drives the gear 33 to rotate, the rotation of the gear 33 drives the cam 32 to eccentrically rotate, and the eccentric rotation of the cam 32 drives the connecting rod 31 and the piston 40 to reciprocate along the extension direction of the pump body 50.

[0044] The worm 22 is connected to the output shaft of the motor 21, and the extension direction of the worm 22 is the same as the extension direction of the motor 21, both of which are arranged at an angle a with the extension direction of the pump body 50. In the oral irrigator, the motor 21 is usually a small motor 21 or a micro motor 21. By arranging the extension direction of the worm 22 and the extension direction of the motor 21 at an angle with the extension direction of the pump body 50, the size of the entire water pump structure 100 in the length direction can be effectively reduced, and the size of the entire water pump structure 100 in the width direction will not be increased. In addition, the worm drive is adopted, which is stable in transmission and low in noise, and can effectively reduce the noise of the water pump structure 100 during operation.

[0045] Please refer to Figure 3 and Figure 4 , along the direction perpendicular to the extension direction of the connecting rod 31, the gear 33 comprises a first side 331 and a second side 332 arranged oppositely, and the worm 22 is meshingly connected to the first side 331 of the gear 33 or the second side 332 of the gear 33. In specific implementation, the worm 22 can be meshingly connected to the first side 331 or the second side 332 of the gear 33 according to requirements.

[0046] In an embodiment, the gear 33 is a worm gear or a helical gear 33. In specific application, the gear 33 can be a worm gear or a helical gear 33.

[0047] In an embodiment, the worm 22 is a multi-start worm. By adopting a multi-start worm for worm drive, the transmission efficiency can be greatly improved. In this embodiment, the worm 22 is a four-start worm. It can be understood that in other embodiments, the worm 22 can also be a two-start worm or a three-start worm, etc.

[0048] Please refer to Figure 3、 Figure 5 and Figure 6 Two cams 32 are provided, and the two cams 32 are respectively eccentrically provided at opposite ends of the gear 33 along the axial direction of the gear 33 and are oppositely arranged. The end of the connecting rod 31 away from the piston 40 is provided with two mounting holes 314, and the two mounting holes 314 are oppositely arranged along a direction perpendicular to the extension direction of the connecting rod 31. Each cam 32 is fixedly installed in one mounting hole 314. By arranging two cams 32 at the two ends along the axial direction of the gear 33, the connecting rod 31 is fixedly connected with the two cams 32, which improves the transmission performance between the cam 32 and the connecting rod 31 and makes the reciprocating movement of the connecting rod 31 more stable.

[0049] Please refer to Figure 3 、 Figure 5 and Figure 6 The connecting rod 31 includes a connecting body 311, a first connecting portion 312, and a second connecting portion 313. The first connecting portion 312 and the second connecting portion 313 are respectively connected to opposite ends of the connecting body 311. The first connecting portion 312 is used for connecting the piston 40, and the second connecting portion 313 is used for connecting the cam 32. The second connecting portion 313 is provided with two second connecting portions 313, and the two second connecting portions 313 are oppositely arranged along a direction perpendicular to the extension direction of the connecting rod 31. Each second connecting portion 313 is provided with a mounting hole 314. The gear 33 is arranged between the two second connecting portions 313 and is spaced apart from the second connecting portion 313. The two cams 32 are respectively installed in the mounting hole 314 of the corresponding second connecting portion 313 and are fixedly connected with the second connecting portion 313.

[0050] In an embodiment, the cam 32 and the second connecting portion 313 are integrally formed. In this way, the cam 32 can be fixedly installed in the mounting hole 314, and the firmness of the connection between the cam 32 and the second connecting portion 313 can be ensured. Of course, in other embodiments, the cam 32 and the second connecting portion 313 can be separately manufactured and then assembled.

[0051] In an embodiment, the gear 33 and the cam 32 are integrally formed. In this way, when the water pump structure 100 is assembled, the assembly steps of the gear 33 and the cam 32 can be saved, and the assembly efficiency can be improved. Of course, in other embodiments, the gear 33 and the cam 32 can be separately manufactured and then assembled.

[0052] Please refer to Figure 1 、 Figure 2 and Figure 5The shell 10 comprises a first shell 11 and a second shell 12, and the transmission mechanism 30 further comprises a connecting shaft 34, the connecting shaft 34 is provided through the gear 33 and the cam 32, and is coaxial with the central axis of the gear 33, one end of the connecting shaft 34 is rotationally connected to the first shell 11, and the other end is rotationally connected to the second shell 12. In this way, the connection of the gear 33 and the cam 32 with the shell 10 is realized, and rotation can be carried out in the shell 10.

[0053] In specific implementation, the first shell 11 and the second shell 12 can be connected through buckling or fasteners. The first shell 11 and the second shell 12 can be arranged in an up-down manner or a left-right manner. In the embodiment, the first shell 11 and the second shell 12 are arranged in an up-down manner, the first shell 11 is arranged at the upper side, and the second shell 12 is arranged at the lower side. The upper side refers to the upper side of the water pump structure 100 when the water pump structure 100 is horizontally placed, and the lower side refers to the lower side of the water pump structure 100 when the water pump structure 100 is horizontally placed.

[0054] The utility model discloses further provide a kind of oral irrigator, comprising above-mentioned water pump structure 100. By using above-mentioned water pump structure 100, the occupied space of water pump structure 100 can be reduced, to facilitate the miniaturization development of oral irrigator.

[0055] Embodiment two:

[0056] The water pump structure 100 and the oral irrigator provided by the utility model are different from the embodiment one in that the cam 32 is arranged differently, specifically, in the embodiment one, the cam 32 is provided with two; while in the embodiment, the cam 32 is provided with one.

[0057] Please refer to Figure 7 , the cam 32 is eccentrically protruded from the gear 33 along the axial direction of the gear 33 and is arranged at one end of the gear 33. In specific implementation, the cam 32 can be arranged at the upper end of the gear 33 or the lower end of the gear 33. The upper end refers to the upper side of the gear 33 when the gear 33 is horizontally placed, and the lower side refers to the lower side of the gear 33 when the gear 33 is horizontally placed.

[0058] Please refer to Figure 3 and Figure 7 , the end of the connecting rod 31 away from the piston 40 is provided with a mounting hole 314, and the cam 32 is fixedly installed in the mounting hole 314. Specifically, the connecting rod 31 is provided with a second connecting portion 313, the mounting hole 314 is provided through the second connecting portion 313, and the second connecting portion 313 is sleeved on the outer periphery of the cam 32, so that the cam 32 is fixedly installed in the mounting hole 314.

[0059] In addition to the above differences, the water pump structure 100, the oral irrigator and the accessory components thereof provided by the embodiment can be designed according to the embodiment one, which will not be described here.

[0060] The above merely describes preferred embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A water pump structure applied to an oral irrigator, characterized in that, The water pump structure comprises a housing, a driving mechanism, a transmission mechanism, a piston and a pump body. The driving mechanism, the transmission mechanism, the piston and the pump body are all mounted in the housing, the piston is slidingly mounted in the pump body, the transmission mechanism is drivingly connected between the piston and the driving mechanism, and the driving mechanism is used to drive the transmission mechanism to move, so as to drive the piston to reciprocate along the extension direction of the pump body. The transmission mechanism extends along the extension direction of the pump body, and the extension direction of the driving mechanism is arranged at an angle with the extension direction of the pump body.

2. The water pump arrangement of claim 1, wherein The angle is greater than or equal to 20° and less than or equal to 60°.

3. The water pump arrangement of claim 2, wherein The angle is 30°.

4. The water pump structure according to any one of claims 1 to 3, characterized in that, The driving mechanism comprises a motor and a worm, the worm is connected to the output end of the motor, and the extension direction of the worm is arranged at the angle with the extension direction of the pump body. The transmission mechanism comprises a connecting rod, a cam and a gear, one end of the connecting rod is drivingly connected to the piston, the other end of the connecting rod is drivingly connected to the cam, the connecting rod extends along the extension direction of the pump body, the cam is eccentrically connected to the gear along the axial direction of the gear, and the gear is meshingly connected with the worm; the gear is used to rotate under the driving of the worm, so as to drive the cam to eccentrically rotate, and then drive the connecting rod and the piston to reciprocate along the extension direction of the pump body.

5. The water pump arrangement of claim 4 wherein, In the direction perpendicular to the extension direction of the connecting rod, the gear comprises oppositely arranged first and second sides, and the worm is meshingly connected to the first side of the gear or the second side of the gear.

6. The water pump arrangement of claim 4 wherein, The gear is a worm gear or a helical gear; and / or The worm is a multi-start worm.

7. The water pump arrangement of claim 4 wherein, The cam is eccentrically protruded from one end of the gear along the axial direction of the gear; The end of the connecting rod away from the piston is provided with a mounting hole, and the cam is fixedly mounted in the mounting hole.

8. The water pump arrangement of claim 4 wherein, The cam is provided with two, and the two cams are respectively eccentrically protruded from opposite ends of the gear along the axial direction of the gear and oppositely arranged; The end of the connecting rod away from the piston is provided with two mounting holes, the two mounting holes are oppositely arranged in the direction perpendicular to the extension direction of the connecting rod, and each cam is fixedly mounted in one mounting hole.

9. The water pump arrangement of claim 4 wherein, The housing comprises a first housing and a second housing. The transmission mechanism further comprises a connecting shaft, the connecting shaft is arranged through the gear and the cam and coaxial with the central axis of the gear, one end of the connecting shaft is rotatably connected to the first housing, and the other end of the connecting shaft is rotatably connected to the second housing.

10. An oral irrigator characterized by, The water pump structure comprises a housing, a driving mechanism, a transmission mechanism, a piston and a pump body.

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