Water flosser

Abstract

The utility model discloses a dental flosser, which includes a mounting shell and a functional module, wherein the mounting shell includes a first shell portion and a second shell portion that are spliced ​​together; the functional module is arranged in the mounting shell, and at least one of the first shell portion and the second shell portion is provided with a limit slot, which is used to limit the axial position of the functional module, and the clamping effect of the first shell portion and the second shell portion is used to fix the functional module in the circumferential direction. The technical solution of the utility model can simplify the assembly process of the punch and improve its production efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of oral cleaning, in particular to a water flosser. Background Art

[0002] A water flosser usually includes a mounting shell, a nozzle, a water tank, a water pump, a transmission assembly and a driving member. The water pump is connected between the nozzle and the water tank. The driving member drives the water pump through the transmission assembly to pump the water in the water tank out of the nozzle to achieve flushing and cleaning of the teeth and oral cavity.

[0003] In the related art, functional modules such as water pumps, transmission components and drive components are usually fixed on the mounting shell by screw locking. This assembly method not only requires more screws, but also has more assembly processes and takes a long time. Therefore, it is necessary to propose a new assembly method to solve the above technical problems. Utility Model Content

[0004] The main purpose of the utility model is to provide a dental flosser, aiming to simplify the assembly process of the punch and improve its production efficiency.

[0005] In order to achieve the above-mentioned purpose, the tooth flosser proposed by the utility model comprises:

[0006] The installation shell comprises a first shell portion and a second shell portion which are spliced ​​together; and

[0007] The functional module is arranged on the mounting shell, and at least one of the first shell part and the second shell part is provided with a limit slot, and the limit slot is used to limit the axial position of the functional module, and utilizes the clamping effect of the first shell part and the second shell part to fix the functional module in the circumferential direction.

[0008] Optionally, the limiting slot includes a first slot body, the functional module includes a driving member, and the outer side surface of the driving member is embedded in the first slot body.

[0009] Optionally, a wiring terminal is provided on the outer side surface of the driving member, and a groove wall of the first groove body is correspondingly provided with an avoidance hole, and the wiring terminal is exposed in the avoidance hole.

[0010] Optionally, a positioning rib is provided on the inner wall surface of the first groove body, and the positioning rib abuts against the outer side surface of the driving member.

[0011] Optionally, the positioning rib extends along the length direction of the driving member and includes a first rib and a second rib opposite to each other, wherein the first rib is arranged on the bottom wall surface of the first shell portion, and the second rib is arranged on the bottom wall surface of the second shell portion.

[0012] Optionally, the limiting slot includes a first slot body, a second slot body and a third slot body that are interconnected, and the functional module includes a driving member, a water pump and a transmission assembly. The driving member is arranged in the first slot body, the water pump is arranged in the second slot body, and the transmission assembly is arranged in the third slot body and connects the driving member and the water pump. The driving member and / or the water pump are embedded and fixed in the limiting slot.

[0013] Optionally, the first slot body, the third slot body and the second slot body are distributed in sequence along the length direction of the mounting shell.

[0014] Optionally, the transmission assembly includes a driving wheel, a driven wheel and a crank, the driving wheel is arranged on the rotating shaft of the driving member, the driven wheel is drivingly connected to the driving wheel, the crank has a relative input end and an output end, the output end is connected to the water pump, and the input end is eccentrically rotatably connected to the driven wheel.

[0015] Optionally, the transmission assembly further comprises a pin shaft, the groove wall of the third groove body is provided with an insertion hole corresponding to the pin shaft, the pin shaft is relatively fixedly inserted in the insertion hole, and the driven wheel is rotatably sleeved on the outer circumferential surface of the pin shaft.

[0016] Optionally, the driving wheel is configured as a bevel gear, the driven wheel is configured as a face gear, the bevel gear is meshingly connected with the face gear, and the crank is arranged on a side of the face gear having a tooth surface.

[0017] Optionally, the limit slot includes a second slot body, the functional module includes a water pump arranged in the second slot body, the water pump includes a pump body and an elastic diaphragm, the pump body has a water pumping cavity, a water inlet and a water outlet connected to the water pumping cavity, the elastic diaphragm is arranged in the water pumping cavity, and can be elastically deformed relative to the pump body.

[0018] Optionally, a stop surface is provided on the end face of the pump body corresponding to the periphery of the elastic diaphragm, a step surface is formed on the end face of the second trough body, and the water pump also includes a pressure ring arranged on the step surface, the pressure ring and the stop surface are arranged at intervals, and jointly clamp the outer periphery of the elastic diaphragm.

[0019] Optionally, a first guide surface is provided on the outer edge of the end surface of the pressure ring close to the step surface, and the first guide surface is gradually contracted inward in a direction close to the step surface.

[0020] Optionally, a second guide surface is provided on the inner edge of the step surface, and the second guide surface is gradually tapered inwardly in a direction approaching the pressure ring.

[0021] Optionally, the outer side surface of the pump body is embedded in the second groove body.

[0022] Optionally, the pump body includes a first pipe section, a second pipe section and a third pipe section connected in sequence, the water inlet is arranged on the side of the second pipe section, the water outlet is arranged on the end face of the third pipe section, and the elastic diaphragm is arranged on the end face of the first pipe section; the diameter of the second pipe section is smaller than that of the first pipe section, and the second trough body is provided with a limiting rib corresponding to the second pipe section, the limiting rib abuts against the outer side face of the second pipe section, and the outer peripheral surface of the first pipe section and the outer peripheral surface of the third pipe section at least partially abut against the trough wall surface of the second trough body.

[0023] Optionally, the functional module includes a water pump, the water pump is provided with a water inlet check valve, the side wall of the second shell portion is provided with a clearance hole, and the water inlet check valve is penetrated through the clearance hole along the assembly direction of the second shell portion.

[0024] Optionally, the functional module includes a water pump, the water pump is provided with a water outlet one-way valve, the mounting shell is further provided with a mounting hole connected to the limit slot, and the water outlet one-way valve is penetrated through the mounting hole.

[0025] Optionally, the mounting hole is formed at the joint of the first shell portion and the second shell portion, a stop ring groove is provided on the outer peripheral surface of the water outlet one-way valve, a stop ring convex is correspondingly provided on the hole wall surface of the mounting hole, and the stop ring convex is embedded in the stop ring groove.

[0026] Optionally, the first shell portion and the second shell portion are detachably connected via fasteners.

[0027] Optionally, the edge of the second shell portion is provided with a plurality of first through holes and at least two positioning holes, the edge of the first shell portion is correspondingly provided with a plurality of second through holes and at least two positioning columns, the first through holes are connected to the second through holes via fasteners, and the positioning columns are adapted to be inserted in the positioning holes.

[0028] Optionally, at least two of the positioning holes are correspondingly arranged in the middle of the mounting shell in the length direction, and are respectively arranged on opposite sides of the mounting shell in the width direction.

[0029] In the technical solution of the utility model, since the functional module is limited by the limiting slot in the axial direction and is clamped by the first shell part and the second shell part in the circumferential direction, it can be relatively fixed relative to the mounting shell. Therefore, the assembly structure and method of the utility model can save the number of screws used and reduce the process and time of locking the screws, thereby simplifying the assembly process of the punch and improving its production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0031] Figure 1 It is a structural schematic diagram of an embodiment of the tooth flosser of the utility model;

[0032] Figure 2 for Figure 1 A schematic diagram of the internal structure of the embodiment shown after the second shell portion is hidden;

[0033] Figure 3 for Figure 2 a top view of the structure shown;

[0034] Figure 4 for Figure 3 The cross-sectional view at AA in the middle, at this time the second shell is unhidden;

[0035] Figure 5 for Figure 4 A partial enlarged view of point B in the middle;

[0036] Figure 6 for Figure 2 An exploded view of the structure shown;

[0037] Figure 7 for Figure 1 Exploded view of the structure shown.

[0038] Description of Figure Numbers:

[0039]

[0040]

[0041] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0043] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0044] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0046] A water flosser usually includes a mounting shell, a nozzle, a water tank, a water pump, a transmission assembly and a driving member. The water pump is connected between the nozzle and the water tank. The driving member drives the water pump through the transmission assembly to pump the water in the water tank out of the nozzle to achieve flushing and cleaning of the teeth and oral cavity.

[0047] In the related art, functional modules such as water pumps, transmission components and drive components are usually fixed on the mounting shell by screw locking. This assembly method not only requires more screws, but also has more assembly processes and takes a long time. Therefore, it is necessary to propose a new assembly method to solve the above technical problems.

[0048] In view of this, the present invention proposes a water flosser. Figures 1 to 7 In one embodiment of the utility model, the water flosser comprises:

[0049] The installation shell 10 includes a first shell portion 11 and a second shell portion 12 which are spliced ​​together; and

[0050] The functional module 101 is arranged in the mounting shell 10, and at least one of the first shell portion 11 and the second shell portion 12 is provided with a limit slot 10a, which is used to limit the axial position of the functional module 101, and utilizes the clamping effect of the first shell portion 11 and the second shell portion 12 to fix the functional module 101 in the circumferential direction.

[0051] In the technical solution of the present utility model, since the functional module 101 is limited by the limiting slot 10a in the axial direction and is clamped by the first shell portion 11 and the second shell portion 12 in the circumferential direction, it can be relatively fixed relative to the mounting shell 10. Therefore, the assembly structure and method of the present utility model can save the number of screws used and reduce the process and time of locking the screws, thereby simplifying the assembly process of the punch and improving its production efficiency.

[0052] In one embodiment, the limit slot 10a includes a first slot body 10c, and the functional module 101 includes a driving member 40, and the outer side surface of the driving member 40 is embedded in the first slot body 10c. That is, in this embodiment, at least the driving member 40 is relatively fixed relative to the mounting shell 10 by embedding, which can save the process of screwing the driving member 40.

[0053] Optionally, a wiring terminal 41 is provided on the outer side of the driving member 40, and a corresponding avoidance hole 11b is provided on the groove wall of the first groove body 10c, and the wiring terminal 41 is exposed in the avoidance hole 11b. In this way, the power supply of the water flosser is allowed to be arranged outside the mounting shell 10, which is convenient for the replacement or maintenance of the power supply and for connecting the driving member 40 with wires so that the power supply of the water flosser can supply power to the driving member 40. Of course, in other embodiments, the power supply of the water flosser can also be arranged in the limit card groove 10a, and then the groove wall of the first groove body 10c does not need to open the avoidance hole 11b corresponding to the wiring terminal 41.

[0054] Optionally, the avoidance hole 11b is provided on a side of the first shell 11 away from the second shell 12, and is extended along the assembly direction of the first shell 11. In this way, when the first shell 11 is buckled into the second shell 12, the terminal 41 can naturally pass through the avoidance hole 11b without manual adjustment, thereby simplifying the assembly process of the oral irrigator. Of course, in other embodiments, the avoidance hole 11b can also be provided on other sides of the first shell 11.

[0055] In one embodiment, the inner wall surface of the first groove body 10c is provided with a positioning convex rib, and the positioning convex rib abuts against the outer side surface of the driving member 40. In this way, by adding a positioning convex rib structure, the protruding height of the positioning convex rib can be conveniently adjusted. For example, when the mounting shell 10 is injection molded, the mold structure corresponding to the positioning convex rib can be reprocessed so that the matching relationship between the positioning convex rib and the driving member 40 meets the design requirements. Of course, in other embodiments, the positioning convex rib may not be provided, and the inner wall surface of the first groove body 10c is directly abutted against the outer side surface of the driving member 40.

[0056] Optionally, the positioning ribs extend along the length direction of the driving member 40 and include a first rib 111 and a second rib 121 opposite to each other. The first rib 111 is provided on the bottom wall of the first shell 11, and the second rib 121 is provided on the bottom wall of the second shell 12. In this way, both the first shell 11 and the second shell 12 are provided with positioning ribs, which facilitates the adjustment of the relative position of the driving member 40 in the limiting slot 10a. Of course, in other embodiments, the positioning ribs may be provided only on the first shell 11, or only on the second shell 12.

[0057] In one embodiment, the limiting card slot 10a includes a first slot body 10c, a second slot body 10d and a third slot body 10e that are connected to each other, and the functional module 101 includes a driving member 40, a water pump 30 and a transmission assembly 20. The driving member 40 is embedded in the first slot body 10c, the water pump 30 is embedded in the second slot body 10d, and the transmission assembly 20 is arranged in the third slot body 10e and connects the driving member 40 and the water pump 30. The driving member 40 and / or the water pump 30 are embedded and fixed in the limiting card slot 10a. Preferably, the driving member 40 and the water pump 30 are both embedded in the limiting card slot 10a, which can save screws for locking the two, thereby simplifying the assembly process of the water flosser and improving its assembly efficiency.

[0058] Optionally, a portion of the first slot body 10c, the second slot body 10d, and the third slot body 10e are formed on the first shell portion 11, and another portion is formed on the second shell portion 12. That is, the first shell portion 11 and the second shell portion 12 together limit the functional module 101 in the axial direction, so that the installation reliability of the functional module 101 can be improved. Of course, in other embodiments, at least one of the first slot body 10c, the second slot body 10d, and the third slot body 10e can also be completely formed on the first shell portion 11 or the second shell portion 12.

[0059] Optionally, the first slot body 10c, the third slot body 10e and the second slot body 10d are sequentially distributed along the length direction of the mounting shell 10. That is, the driving member 40, the transmission assembly 20 and the water pump 30 are distributed along the length direction of the mounting shell 10, which is conducive to the thin and flat structural design of the oral irrigator. Of course, in other embodiments, the first slot body 10c and the third slot body 10e or the second slot body 10d can also be arranged side by side in the length direction of the mounting shell 10.

[0060] In one embodiment, the transmission assembly 20 includes a driving wheel 21, a driven wheel 22 and a crank 23, wherein the driving wheel 21 is arranged on the rotating shaft of the driving member 40, the driven wheel 22 is drivingly connected to the driving wheel 21, and the crank 23 has an input end 231 and an output end 232 relative to each other, the output end 232 is connected to the water pump 30, and the input end 231 is eccentrically connected to the driven wheel 22. Specifically, an eccentric wheel 221 is convexly provided on one end surface of the driven wheel 22, and the input end 231 is provided with a mounting opening 233 for the eccentric wheel 221, and the eccentric wheel 221 can eccentrically rotate in the mounting opening 233. In this way, the structure is simple and the transmission function is stable and reliable. Of course, in other embodiments, other transmission structures may also be adopted, and this application does not specifically limit this.

[0061] Specifically, in this embodiment, the water pump 30 includes a pump body 31 and an elastic diaphragm 32 arranged on the pump body 31. The eccentric rotation of the input end 231 of the crank 23 can cause the output end 232 of the crank 23 to perform a roughly linear reciprocating motion, and drive the elastic diaphragm 32 to perform periodic elastic deformation and displacement relative to the pump body 31, thereby realizing the water pumping function of the water pump 30.

[0062] In one embodiment, the transmission assembly 20 further includes a pin shaft 24, and a slot wall of the third slot body 10e is provided with an insertion hole corresponding to the pin shaft 24, the pin shaft 24 is relatively fixedly inserted in the insertion hole, and the driven wheel 22 is rotatably sleeved on the outer peripheral surface of the pin shaft 24. In this way, the structure is simple and easy to assemble. Specifically, the driven wheel 22 is provided with an axial hole 222 corresponding to the pin shaft 24, and the pin shaft 24 is penetrated in the axial hole 222.

[0063] In one embodiment, the jack includes a first jack 11a provided in the first shell 11 and a second jack 12a provided in the second shell 12. The pin 24 is relatively fixedly provided in the first jack 11a and the second jack 12a. There is a gap between the outer circumference of the pin 24 and the wall surface of the shaft hole 222. In this way, on the one hand, by fixing the pin 24 relative to the shell, the pin 24 can provide a more stable support and limiting effect for the eccentric 221 and the crank 23 when the eccentric 221 and the input end 231 of the crank 23 rotate, thereby improving the running smoothness and stability of the eccentric and the crank 23. On the other hand, there is a gap between the outer circumference of the pin 24 and the wall surface of the shaft hole 222, which can prevent the driven wheel 22 from thermally expanding during operation, resulting in an increase in size thermal expansion and a jamming interference with the driven wheel 22.

[0064] In the present embodiment, the end face of the second end of the pin 24 is optionally abutted against the second jack 12a, and the end face of the first end is spaced apart from the bottom wall of the first jack 11a. It is understandable that if the two opposite ends of the pin 24 are respectively abutted against the bottom wall of the first jack 11a and the second jack 12a, it is easy to cause the problem of assembly difficulty or poor assembly due to problems such as dimensional tolerance and assembly tolerance. Therefore, a gap is provided between the first end of the pin 24 and the bottom wall of the first jack 11a, which can avoid the above-mentioned problem. Of course, in other embodiments, the end face of the first end of the pin 24 can also be abutted against the first jack 11a, and the end face of the second end can be spaced apart from the bottom wall of the second jack 12a.

[0065] In one embodiment, the driving wheel 21 is configured as a bevel gear, the driven wheel 22 is configured as a face gear, the bevel gear is meshed with the face gear, and the crank 23 is arranged on the side of the face gear having the tooth surface. Of course, in other embodiments, it can also be, or the crank 23 is arranged on the side of the face gear away from the tooth surface.

[0066] Specifically, when installing the bevel gear and the face gear, first use the pin 24 to install the face gear on the first shell 11, then install the drive member 40 and the bevel gear thereon into the first shell 11, and then install the crank 23 in communication with the water pump 30 into the first shell 11. After the mounting opening 233 of the crank 23 is aligned with the eccentric wheel 221, it can be sleeved on the eccentric wheel 221 along the second direction. Finally, the second shell 12 is spliced ​​on the first shell 11, and the functional modules 101 in the mounting shell 10 can be shielded and protected. In this way, the assembly of the bevel gear, the face gear and the crank 23 is simple and convenient, which is conducive to improving the production efficiency of the water flosser.

[0067] In one embodiment, the limit card slot 10a includes a second slot body 10d, and the functional module 101 includes a water pump 30 disposed in the second slot body 10d. The water pump 30 includes a pump body 31 and an elastic diaphragm 32. The pump body 31 has a water pumping cavity 31a, a water inlet 31b and a water outlet 31c connected to the water pumping cavity 31a, and the elastic diaphragm 32 is disposed in the water pumping cavity 31a and can be elastically deformed relative to the pump body 31. In this way, the structure is simple and the water pumping function is stable and reliable. Of course, in other embodiments, other water pump 30 structures can also be used, and this application does not make specific limitations on this.

[0068] The end surface of the pump body 31 is provided with a stop surface 31d corresponding to the periphery of the elastic diaphragm 32, and the end surface of the second groove body 10d is formed with a step surface 10f. The water pump 30 also includes a pressure ring 33 arranged on the step surface 10f. The pressure ring 33 and the stop surface 31d are arranged at intervals and jointly clamp the outer periphery of the elastic diaphragm 32.

[0069] In this embodiment, the mounting portion of the elastic diaphragm 32 is clamped together by the pressure ring 33 and the stop surface 31d of the pump body 31 to achieve the installation and fixation of the elastic diaphragm 32 on the pump body 31, replacing the bonding fixation method adopted in the prior art. The problem of loosening or even failure of the bonding surface due to elastic deformation of the elastic diaphragm 32 can be avoided, thereby improving the installation reliability of the elastic diaphragm 32 and reducing the risk of functional abnormalities in the water pump 30.

[0070] In this embodiment, optionally, the stop surface 31d and the pressure ring 33 are spaced apart in the first direction, and jointly clamp the mounting portion in the first direction. At least a part of the clamping force applied to the mounting portion by the pressure ring 33 and the pump body 31 acts in the first direction. In this way, the force exerted on the mounting portion by the deformation portion when deforming along the first direction can be overcome in a targeted manner, thereby improving the installation reliability of the mounting portion. Of course, in other embodiments, the stop surface 31d may not be provided, and the pressure ring 33 and the pump body 31 may jointly clamp the mounting portion along a second direction intersecting with the first direction.

[0071] Specifically, when assembling the water pump 30, the pump body 31, the elastic diaphragm 32 and the pressure ring 33 are first assembled together and embedded in the first shell portion 11, and the pressure ring 33 is abutted by the step surface 10f on the first shell portion 11, and then the second shell portion 12 is installed on the first shell portion 11 along the second direction. During this process, the step surface 10f on the second shell portion 12 also abuts against the pressure ring 33.

[0072] In order to facilitate the insertion of the pressure ring 33 into the limiting groove 10a, optionally, a first guide surface is provided on the outer edge of the end surface of the pressure ring 33 close to the step surface 10f, and the first guide surface is gradually set inward in the direction close to the step surface 10f. In this way, when the pressure ring 33 follows the water pump 30 to be embedded in the first shell 11, the first guide surface first abuts against the step surface 10f of the first shell 11 to play a guiding role, so that the pressure ring 33 can be smoothly embedded in the first shell 11; and when the second shell 12 is buckled into the first shell 11, the first guide surface can also abut against the step surface 10f of the second shell 12 to play a guiding role, so that the pressure ring 33 can be smoothly embedded in the second shell 12.

[0073] In order to further improve the installation smoothness and convenience of the pressing ring 33, optionally, a second guide surface is provided on the inner edge of the step surface 10f, and the second guide surface is gradually contracted inwardly in the direction close to the pressing ring 33. Of course, the second guide surface may be provided only on the step surface 10f, or the first guide surface may be provided only on the pressing ring 33, or neither the first guide surface nor the second guide surface may be provided.

[0074] In one embodiment, the outer side surface of the pump body 31 is embedded in the second groove 10d. In this way, the screws for locking the pump body 31 can be saved, thereby simplifying the assembly process of the oral irrigator and improving its assembly efficiency.

[0075] Specifically, the pump body 31 includes a first pipe section 311, a second pipe section 312 and a third pipe section 313 connected in sequence, the water inlet 31b is arranged on the side of the second pipe section 312, the water outlet 31c is arranged on the end face of the third pipe section 313, and the elastic diaphragm 32 is arranged on the end face of the first pipe section 311; the pipe diameter of the second pipe section 312 is smaller than that of the first pipe section 311, and the second tank body 10d is provided with a limiting rib 113 corresponding to the second pipe section 312, the limiting rib 113 abuts against the outer side face of the second pipe section 312, and the outer circumference of the first pipe section 311 and the outer circumference of the third pipe section 313 at least partially abut against the tank wall face of the second tank body 10d. Specifically, the limiting rib 113 is arranged on the inner wall face of the first shell 11.

[0076] In this way, the first pipe section 311, the second pipe section 312 and the third pipe section 313 are all constrained and clamped by the structure of the mounting shell 10, thereby ensuring the installation reliability and stability of the pump body 31 in the second slot body 10d. Of course, in other embodiments, the limiting rib 113 may not be provided, and only the first pipe section 311 and the second pipe section 312 abut against the slot wall surface of the second slot body 10d, that is, the second pipe section 312 is suspended.

[0077] In one embodiment, the water pump 30 is provided with a water inlet check valve 34, and the side wall of the second shell 12 is provided with a clearance hole 12b, and the water inlet check valve 34 is penetrated in the clearance hole 12b along the assembly direction of the second shell 12. That is, the clearance hole 12b is arranged on the side of the second shell 12 away from the first shell 11. In this way, the water inlet check valve 34 can limit the occurrence of water flowing back from the pump body 31 to the water tank, thereby ensuring the cleanliness and hygiene of the water in the water tank. Secondly, the pumping force generated by the movement of the elastic diaphragm 32 can basically act on sending the water pump 30 in the pump body 31 out of the water outlet 31c. Furthermore, since the water inlet check valve 34 is penetrated in the clearance hole 12b along the assembly direction of the second shell 12, the water inlet check valve 34 can naturally pass through the clearance hole 12b during the process of the first shell 11 being buckled into the second shell 12, without the need for manual adjustment, thereby simplifying the assembly process of the water flosser.

[0078] It can be understood that the water inlet check valve 34 belongs to a relatively mature prior art, and the present application does not specifically limit the structure of the water inlet check valve 34. Those skilled in the art can select a check valve of a specific structure according to design requirements. Of course, in other embodiments, the water inlet check valve 34 may not be provided, or the clearance hole 12b may be provided on other sides of the second shell 12.

[0079] In one embodiment, the water pump 30 is provided with a water outlet check valve 35, and the mounting shell 10 is also provided with a mounting hole 10b connected to the limit slot 10a, and the water outlet check valve 35 is penetrated in the mounting hole 10b. In this way, the water outlet check valve 35 can limit the situation where water flows back from the nozzle to the pump body 31, thereby avoiding the problem of water in the pump body 31 being contaminated. It can be understood that the water inlet check valve 34 belongs to a relatively mature prior art, and the present application does not specifically limit the structural form of the water inlet check valve 34. Those skilled in the art can select a check valve with a specific structural form according to design requirements. Of course, in other embodiments, the water outlet check valve 35 may not be provided.

[0080] Optionally, the mounting hole 10b is formed at the joint of the first shell 11 and the second shell 12, a stop ring groove 351 is provided on the outer peripheral surface of the water outlet check valve 35, and a stop ring protrusion 13 is correspondingly provided on the hole wall surface of the mounting hole 10b, and the stop ring protrusion 13 is embedded in the stop ring groove 351. In this way, the structure is simple and easy to install. Of course, in other embodiments, the mounting hole 10b can also be provided on the side of the first shell 11 away from the second shell 12, or the stop ring groove 351 is not provided.

[0081] In one embodiment, the first shell 11 and the second shell 12 are detachably connected by fasteners. In this way, the first shell 11 and the second shell 12 are easily installed and removed, thereby facilitating the later maintenance and replacement of the functional module 101. Of course, in other embodiments, the first shell 11 and the second shell 12 can also be fixed together by welding, riveting or bonding.

[0082] Optionally, the edge of the second shell 12 is provided with a plurality of first through holes 12c and at least two positioning holes 12d, and the edge of the first shell 11 is correspondingly provided with a plurality of second through holes 11c and at least two positioning posts 112, the first through holes 12c are connected to the second through holes 11c by fasteners, and the positioning posts 112 are adapted to be inserted in the positioning holes 12d. In this way, the mutual positioning restrictions of the first shell 11 and the second shell 12 are facilitated, thereby ensuring that the functional module 101 is adapted to be embedded in the mounting shell 10 and is stably clamped, thereby improving the functional reliability of the water flosser. Of course, in other embodiments, the first shell 11 may be fixed with screws, and the second shell 12 may be provided with screw through holes corresponding to the screws; or the positioning holes 12d and the positioning posts 112 may not be provided.

[0083] Optionally, at least two positioning holes 12d are correspondingly arranged in the middle of the mounting shell 10 in the length direction, and are arranged on opposite sides in the width direction of the mounting shell 10. In this way, the positioning holes 12d and the positioning columns 112 are arranged in the middle of the mounting shell 10 in the length direction, which can not only facilitate the alignment and insertion of the two, but also can well impose positioning restrictions on the first shell part 11 and the second shell part 12 after being installed in place. Of course, in other embodiments, the positioning holes 12d can also be arranged at the ends of the mounting shell 10 in the length direction.

[0084] The above description is only an optional embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A water flosser, characterized in that: include: The installation shell comprises a first shell portion and a second shell portion which are spliced ​​together; and The functional module is arranged on the mounting shell, and at least one of the first shell part and the second shell part is provided with a limit slot, and the limit slot is used to limit the axial position of the functional module, and utilizes the clamping effect of the first shell part and the second shell part to fix the functional module in the circumferential direction.

2. The oral rinser according to claim 1, characterized in that: The limit slot includes a first slot body, and the functional module includes a driving member, and the outer side surface of the driving member is embedded in the first slot body.

3. The oral rinser according to claim 2, characterized in that: The outer side surface of the driving member is provided with a wiring terminal, and the groove wall of the first groove body is correspondingly provided with an avoidance hole, and the wiring terminal is exposed in the avoidance hole.

4. The oral rinser according to claim 2, characterized in that: The inner wall surface of the first groove body is provided with a positioning convex rib, and the positioning convex rib abuts against the outer side surface of the driving member.

5. The oral rinser according to claim 4, characterized in that: The positioning rib extends along the length direction of the driving member and includes a first rib and a second rib opposite to each other. The first rib is arranged on the bottom wall surface of the first shell portion, and the second rib is arranged on the bottom wall surface of the second shell portion.

6. The oral rinser according to claim 1, characterized in that: The limiting slot includes a first slot body, a second slot body and a third slot body that are interconnected, and the functional module includes a driving member, a water pump and a transmission assembly. The driving member is arranged in the first slot body, the water pump is arranged in the second slot body, and the transmission assembly is arranged in the third slot body and connects the driving member and the water pump. The driving member and / or the water pump are embedded and fixed in the limiting slot.

7. The oral rinser according to claim 6, characterized in that: The first slot body, the third slot body and the second slot body are sequentially distributed along the length direction of the mounting shell.

8. The oral rinser according to claim 6, characterized in that: The transmission assembly includes a driving wheel, a driven wheel and a crank, wherein the driving wheel is arranged on the rotating shaft of the driving member, the driven wheel is drivingly connected to the driving wheel, the crank has an input end and an output end relative to each other, the output end is connected to the water pump, and the input end is eccentrically rotatably connected to the driven wheel.

9. The oral rinser according to claim 8, characterized in that: The transmission assembly also includes a pin shaft, a slot wall of the third slot body is provided with an insertion hole corresponding to the pin shaft, the pin shaft is relatively fixedly inserted in the insertion hole, and the driven wheel is rotatably sleeved on the outer peripheral surface of the pin shaft.

10. The oral rinser according to claim 8, characterized in that: The driving wheel is configured as a bevel gear, the driven wheel is configured as a face gear, the bevel gear is meshingly connected with the face gear, and the crank is arranged on a side of the face gear having a tooth surface.

11. The oral rinser according to claim 1, characterized in that: The limiting slot includes a second slot body, the functional module includes a water pump arranged in the second slot body, the water pump includes a pump body and an elastic diaphragm, the pump body has a water pumping cavity, a water inlet and a water outlet connected to the water pumping cavity, the elastic diaphragm is arranged in the water pumping cavity, and can be elastically deformed relative to the pump body.

12. The oral rinser according to claim 11, characterized in that: The end surface of the pump body is provided with a stop surface corresponding to the periphery of the elastic diaphragm, the end surface of the second trough body is formed with a step surface, and the water pump also includes a pressure ring arranged on the step surface, the pressure ring and the stop surface are arranged at intervals, and jointly clamp the outer periphery of the elastic diaphragm.

13. The oral rinser according to claim 12, characterized in that: A first guide surface is provided at the outer edge of the end surface of the pressure ring close to the step surface, and the first guide surface is gradually contracted inwardly in the direction close to the step surface.

14. The oral rinser according to claim 12, characterized in that: A second guide surface is provided at the inner side edge of the step surface, and the second guide surface is gradually contracted inwardly in a direction close to the pressure ring.

15. The oral rinser according to claim 11, characterized in that: The outer side surface of the pump body is embedded in the second groove body.

16. The oral rinser according to claim 15, characterized in that: The pump body includes a first pipe section, a second pipe section and a third pipe section connected in sequence, the water inlet is arranged on the side of the second pipe section, the water outlet is arranged on the end face of the third pipe section, and the elastic diaphragm is arranged on the end face of the first pipe section; the diameter of the second pipe section is smaller than that of the first pipe section, and the second trough body is provided with a limiting rib corresponding to the second pipe section, the limiting rib abuts against the outer side face of the second pipe section, and the outer peripheral surface of the first pipe section and the outer peripheral surface of the third pipe section at least partially abut against the trough wall surface of the second trough body.

17. The oral irrigator according to claim 1, characterized in that: The functional module comprises a water pump, the water pump is provided with a water inlet check valve, the side wall of the second shell is provided with a clearance hole, and the water inlet check valve is penetrated through the clearance hole along the assembly direction of the second shell.

18. The oral rinser according to claim 1, characterized in that: The functional module comprises a water pump, the water pump is provided with a water outlet one-way valve, the mounting shell is further provided with a mounting hole communicating with the limit card slot, and the water outlet one-way valve is penetrated in the mounting hole.

19. The oral rinser according to claim 18, characterized in that: The mounting hole is formed at the joint of the first shell part and the second shell part, the outer peripheral surface of the water outlet one-way valve is provided with a stop ring groove, and the hole wall surface of the mounting hole is correspondingly provided with a stop ring convex, and the stop ring convex is embedded in the stop ring groove.

20. The oral rinser according to any one of claims 1 to 19, characterized in that: The first shell portion and the second shell portion are detachably connected via fasteners.

21. The oral rinser according to claim 20, characterized in that: The edge of the second shell is provided with a plurality of first through holes and at least two positioning holes, and the edge of the first shell is correspondingly provided with a plurality of second through holes and at least two positioning columns, the first through holes are connected to the second through holes by fasteners, and the positioning columns are adapted to be inserted in the positioning holes.

22. The oral rinser according to claim 21, characterized in that: At least two of the positioning holes are correspondingly arranged in the middle of the mounting shell in the length direction, and are respectively arranged on two opposite sides in the width direction of the mounting shell.

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