Pulse type elastic pump and oral irrigator

Abstract

The utility model discloses a pulse type elastic pump and an oral irrigator, and belongs to the field of oral irrigators, and the pulse type elastic pump comprises an elastic pump body, a liquid inlet flow channel, a liquid outlet flow channel and a driving device. The elastic pump body comprises a pump core and a pump sleeve, the pump sleeve is sleeved on the pump core, a pump cavity is formed between the pump sleeve and the pump core, the pump core is provided with a matching surface facing the pump cavity, the pump sleeve is provided with an elastically-reset deformation reset area, and the deformation reset area is applied with acting force to compress / reset the pump cavity to generate volume change; the liquid inlet runner is communicated with the pump cavity through a liquid inlet one-way valve; the liquid outlet flow channel is communicated with the pump cavity through a liquid outlet one-way valve; the driving device is provided with a reciprocating driving end, the driving end periodically applies acting force to the deformation reset area, and the driving end is matched with the matching face when the volume of the pump cavity is minimum. The pump cavity is formed between the pump core and the pump sleeve in a clamped mode, the driving end of the driving device can be matched with the pump core in an extrusion mode, and the maximum pump cavity compression effect is achieved. Therefore, the structure size can be reduced, and small size and easy layout are realized.

Description

Technical Field

[0001] The utility model relates to the field of oral irrigators, in particular to a pulse elastic pump and an oral irrigator. Background Art

[0002] With the improvement of living standards, people's awareness of oral care has gradually increased, and the oral cleaning tools on the market have become more and more diverse. Among them, the water flosser has become one of the essential small appliances in the home as a substitute for traditional dental floss. Its basic working principle is to use the pump to draw water from the water tank and spray high-pressure pulse water through the nozzle hundreds or even thousands of times per minute to clean food residues and dental plaque in the gaps between teeth and massage gums, etc., to improve the oral environment.

[0003] The existing water discharge system of water flossers usually adopts a plunger pump, and the reciprocating motion of the piston of the plunger pump requires a crank-connecting rod mechanism to realize it. However, due to the structural limitation of the crank-connecting rod mechanism, the height dimension of the water discharge system of water flossers is relatively large, which causes the height dimension of the existing water flossers to be relatively large, which is not conducive to users to carry around. At the same time, in the prior art, there are also some structures using hoses as pump bodies. The existing Chinese patent CN116898611A discloses a water discharge system of water flossers, which changes the volume by periodically squeezing the elastic pressure zone of the sub-pump wall, and then completes the pumping of water by sucking in the fluid by negative pressure and squeezing out the fluid by overpressure. However, the core structure of the hose pump is relatively large, and the impact force needs to be improved. How to make the core structure of the hose pump more compact and improve the impact force of the hose pump is a technical problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0004] One purpose of the utility model is to provide a water pumping structure with compact structure and high water pumping efficiency;

[0005] The second purpose of the utility model is to provide a water flosser with a compact structure and high water pumping efficiency;

[0006] In order to solve one of the purposes, the utility model provides a pulse elastic pump, which is characterized by comprising:

[0007] An elastic pump body, the elastic pump body comprising a pump core and a pump sleeve, the pump sleeve being sleeved on the pump core and forming a pump cavity between the pump core, the pump core having a fitting surface facing the pump cavity, the pump sleeve having an elastically resetting deformation reset area, the deformation reset area being applied with a force to compress / reset the pump cavity to generate a volume change;

[0008] A liquid inlet flow channel, the liquid inlet flow channel is connected to the pump chamber through a liquid inlet one-way valve;

[0009] A liquid outlet flow channel, the liquid outlet flow channel is connected to the pump chamber through a liquid outlet one-way valve;

[0010] A driving device, wherein the driving device has a reciprocating driving end, the driving end periodically applies a force to the deformation restoring area, and the shape of the driving end fits the fitting surface.

[0011] Preferably, the driving device comprises:

[0012] Drive motor;

[0013] A transmission assembly, the transmission assembly comprising:

[0014] A gear plate, wherein the gear plate is mounted via a mounting shaft;

[0015] A bevel gear, the bevel gear is mounted on the drive shaft of the drive motor and meshed with the gear plate;

[0016] An eccentric cam, wherein the eccentric cam is eccentrically mounted to the axis of the gear plate;

[0017] A sliding plunger, the sliding plunger comprising:

[0018] A plunger seat, wherein the plunger seat has a movable matching cavity for matching the movement of the eccentric cam, and the eccentric cam is in the movable matching cavity and drives the plunger seat to reciprocate;

[0019] The plunger body is arranged on a side of the plunger seat facing the deformation restoring area, and the driving end is implemented on the plunger body.

[0020] Preferably, it further comprises a support sleeve, the bottom of the support sleeve has an opening, the interior of the support sleeve has a constant cavity, the elastic pump body is located in the constant cavity, and the deformation restoring area is located at the opening.

[0021] Preferably, the deformation restoring area is conical, and the outer periphery of the deformation restoring area fits with the opening without any gap.

[0022] Preferably, the driving end is defined as a conical protrusion, and when the driving end is inserted into the opening, the outer periphery fits with the opening without any gap.

[0023] Preferably, the mating surface is a mating concave surface whose shape is adapted to the conical protrusion.

[0024] Preferably, at least the pump sleeve is implemented as an elastomer.

[0025] The above technical solutions alone or in combination show the following beneficial effects:

[0026] A pump cavity is formed by sandwiching the pump core and the pump sleeve, and the driving end of the driving device can be squeezed and fit with the pump core to achieve the maximum compression effect of the pump cavity and improve the water pumping efficiency; thereby, the structural volume can be reduced, making it compact and easy to layout; compared with the traditional diaphragm pump, the driving end of this solution is not connected to the pump sleeve, which minimizes the damage to the elastic pump body and also improves the durability.

[0027] Compared with a pump body with a hose structure, the present application provides a constant cavity through a support sleeve, so that the elastic pump body only deforms in the deformation reset area. Therefore, the extrusion deformation of the drive device is converted into the volume change of the pump chamber to the greatest extent, greatly improving the efficiency of pumping water.

[0028] By designing an eccentric cam with a structure similar to that of a triangular rotor to perform cam motion and cooperating with a sliding plunger to perform reciprocating motion, the maximum linear velocity of the sliding plunger can be increased, thereby increasing the impact force. Compared with the traditional crank-connecting rod transmission assembly, it can greatly improve the work efficiency.

[0029] The deformation reset area of ​​the pump sleeve is conical, and the outer periphery is tightly fitted with the support sleeve. When the sliding plunger squeezes the pump sleeve, the support sleeve (with an unchanging cavity inside) and the driving end of the sliding plunger jointly support the pump sleeve, so that the pump sleeve can be deformed less under high pressure, but still maintain a high impact force.

[0030] In order to solve the second purpose, the utility model provides a water flosser, including a water flosser body and a pulse elastic pump; the driving device is controlled to drive the power component of the water flosser body, the liquid inlet channel is connected to the water supply component of the water flosser body, and the liquid outlet channel is connected to the nozzle component of the water flosser body.

[0031] Preferably, the water flosser body includes at least a protective shell; the protective shell has an installation cabin inside, the pulse elastic pump is arranged in the installation cabin, the protective shell is provided with a pressure relief hole for balancing the pressure inside and outside the installation cabin, and the pressure relief hole is provided with a pressure relief valve.

[0032] Preferably, a waterproof and breathable membrane is also provided on the pressure relief hole.

[0033] The beneficial effects of adopting the above technical solution are:

[0034] The waterproof and breathable membrane of the body can balance the pressure between the movement and the outside and play a waterproof role.

[0035] If a traditional water flosser is placed in a humid environment for a long time, water vapor will enter the movement through the breathable membrane, thereby deteriorating the internal working environment of the movement. The present application adds a one-way pressure relief valve on the inside of the waterproof breathable membrane. When the internal pressure of the movement is higher than the external pressure, the pressure can pass through the one-way pressure relief valve, but the external water vapor cannot enter the movement through the one-way pressure relief valve, thereby keeping the inside of the movement relatively dry. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 The schematic diagram of the structure of the pulse elastic pump in the utility model is expressed.

[0037] Figure 2 The structural disassembly diagram of the pulse elastic pump in the utility model is expressed.

[0038] Figure 3 A schematic diagram of the structure of the elastic pump body in the utility model is expressed.

[0039] Figure 4 An axial cross-sectional view of the elastic pump body of the utility model is expressed.

[0040] Figure 5 The schematic diagram of the structure of the water flosser in the utility model is expressed.

[0041] Figure 6 The structural disassembly diagram of the water flosser in the utility model is expressed.

[0042] Figure 7 A top view of the water flosser in the utility model is expressed.

[0043] Figure 8 Expressed Figure 7 Cross-section view at AA in the middle.

[0044] Fig. 9 Expressed Figure 8 Enlarged view of center C.

[0045] Fig.10 Expressed Figure 7 Cross-section view at BB.

[0046] in:

[0047]

[0048] DETAILED DESCRIPTION

[0049] The preferred embodiments described below are for example only, and those skilled in the art may think of other obvious variations. The basic principles of the present invention defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0050] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0051] Embodiment 1:

[0052] See also Figure 1 to Figure 4 This embodiment provides a pulse elastic pump, including an elastic pump body 1, a liquid inlet channel 2, a liquid outlet channel 3 and a driving device 4. The elastic pump body 1 includes a pump core 11 and a pump sleeve 12, the pump sleeve is sleeved on the pump core 11 and forms a pump chamber 10 with the pump core 11, the pump core 11 has a fitting surface 110 facing the pump chamber 10, the pump sleeve 12 has an elastically reset deformation reset area 120, the deformation reset area 120 is applied with force to compress / reset the pump chamber 10 to produce a volume change; the liquid inlet channel 2 is connected to the pump chamber 10 through a liquid inlet check valve 21; the liquid outlet channel 3 is connected to the pump chamber 10 through a liquid outlet check valve 31; the driving device 4 has a reciprocating driving end 4321, the driving end 4321 periodically applies a force to the deformation reset area 120, and the shape of the driving end 4321 fits the fitting surface 110. The pump chamber 10 is formed by clamping the pump core 11 and the pump sleeve 12, and the driving end 4321 of the driving device 4 can be squeezed and fit with the pump core 11 to achieve the maximum compression effect of the pump chamber 10; thereby, the structural volume can be reduced, making it compact and easy to layout; compared with the traditional diaphragm pump, the driving end 4321 of this solution is not connected to the pump sleeve 12, which minimizes the damage to the elastic pump body 1 and also improves the durability.

[0053] The above is necessary to achieve the technical purpose of this embodiment, and is further described in detail below with reference to the accompanying drawings:

[0054] In the material selection, the pump core 11 can be a plastic part (no deformation occurs), but at least the deformation recovery area 120 of the pump sleeve 12 or the whole is an elastomer. Here, the elastomer is interpreted as a highly elastic material that can restore its original shape after the external force is removed. In the prior art, it is implemented as a polymer material, such as nitrile rubber, etc. Since this embodiment does not involve material improvement, the material selection is all in the prior art, so no unnecessary details are given.

[0055] Please combine Figure 1 and Figure 2 , the driving device 4 provides a periodic squeezing force for the deformation reset zone 120, so that the elastic pump generates a pulsed water flow. Specifically, the driving device 4 includes three main components: a driving motor 41, a transmission component 42 and a sliding plunger 43. The driving motor 41 drives the sliding plunger 43 to reciprocate through the transmission component 42, thereby applying a periodic squeezing effect to the deformation reset zone 120 of the pump sleeve 12; thereby causing the volume of the pump chamber 10 to change and produce a pressure change. When the sliding plunger 43 squeezes the deformation reset zone 120 of the pump sleeve 12, the volume of the pump chamber 10 becomes smaller, and the internal overpressure state causes the water flow in the pump chamber 10 to be ejected from the liquid outlet channel 3 through the liquid outlet check valve 31; when the position of the sliding plunger 43 is restored, the deformation reset zone 120 is restored, the volume of the pump chamber 10 is restored, and the internal negative pressure state sucks the fluid in the liquid inlet channel 2 through the liquid inlet check valve 21; such a reciprocating high-frequency action forms a pulsed water flow. Furthermore, the liquid outlet one-way valve 31 and the liquid inlet one-way valve 21 may be one-way ball valves or one-way valve plates, which are not limited here.

[0056] Furthermore, the transmission assembly 42 includes a gear plate 422, a bevel gear 421 and an eccentric cam 423. The gear plate 422 is installed via a mounting shaft 424; the bevel gear 421 is installed on the drive shaft 411 of the drive motor 41 and meshes with the gear plate 422; and the eccentric cam 423 is installed eccentrically with respect to the axis of the gear plate 422. When the drive shaft 411 of the drive motor 41 rotates, the gear plate 422 is driven to rotate by the bevel gear 421, and the eccentric cam 423 is installed eccentrically with respect to the gear plate 422, so that the eccentric cam 423 performs a cam motion.

[0057] Furthermore, the sliding plunger 43 includes a plunger seat and a plunger body 432. The plunger seat has a movable matching cavity 4310 that matches the movement of the eccentric cam 423. The eccentric cam 423 is in the movable matching cavity 4310 and drives the plunger seat to reciprocate. The plunger body 432 is arranged on the side of the plunger seat facing the deformation reset area 120, and the driving end 4321 is implemented on the plunger body 432. When the eccentric cam 423 performs cam motion, it is converted into a linear reciprocating motion of the piston seat 431 because it is in the movable matching cavity 4310.

[0058] Specifically, the movable matching cavity 4310 is square, and its reciprocating motion direction is defined as the length direction, and the other direction is defined as the width direction. The length direction size is matched with the size of the eccentric cam 423, so that it receives the thrust formed by the cam motion of the eccentric cam 423 and is pushed to form reciprocating motion; while the width direction size is larger than the size of the eccentric cam 423, so that no force is formed on both sides, so that the cam motion of the eccentric cam 423 can be converted into the linear reciprocating motion of the piston seat 431.

[0059] Furthermore, a guide groove 4311 is provided on the piston seat 431 , the direction of the guide groove 4311 is consistent with the linear direction of the reciprocating motion, and the mounting shaft 424 is located in the guide groove 4311 , thereby further playing a role in linear guiding and stabilizing.

[0060] Preferably, the eccentric cam 423 is a triangular rotor cam, and the drive device 4 can be purchased from Shanghai Feixiang Health Technology Co., Ltd. An electric drive device for the liquid outlet system in a series of water flossers (recorded in patent CN 219366250 U).

[0061] Compared with the hose structure used as the pump body in the prior art, its disadvantages are obvious. Its deformation is non-specific. When one area is under pressure, the entire area may undergo a certain expansion deformation, so that the structural deformation is large but the volume change is not obvious, resulting in insufficient impact force. As a preferred implementation of this embodiment, please combine Figure 3 and Figure 4 , the present structure also includes a support sleeve 13, the bottom of the support sleeve 13 has an opening 130, and an unchanging cavity inside, the elastic pump body 1 is located in the unchanging cavity, and the deformation reset area 120 is located at the opening 130. Preferably, the support sleeve 13 is a rigid sleeve, supported by a plastic material, and is not easily deformed. Compared with a pump body with a hose structure, the present water flosser provides an unchanging cavity through a rigid sleeve, so that the elastic pump body 1 is only deformed in the deformation reset area 120. Therefore, the extrusion deformation of the drive device 4 is converted into the volume change of the pump chamber 10 to the greatest extent, so that the efficiency of pumping water is greatly improved. Preferably. Furthermore, the plunger body 432 (at least the drive end 4321) is inserted into the opening 130 and fits with the opening 130 without gap. Furthermore, the deformation reset area 120 of the pump sleeve 12 is conical, and the outer periphery is tightly fitted with the support sleeve 13. When the sliding plunger 43 squeezes the pump sleeve 12, the support sleeve 13 (with an unchanged cavity inside) and the driving end 4321 of the sliding plunger 43 jointly support the pump sleeve 12, so that the pump sleeve 12 can achieve less deformation under high pressure, but still maintain a higher impact force.

[0062] Preferably, the driving end 4321 is defined as a conical protrusion, and the mating surface 110 is a mating concave surface whose shape is adapted to the conical protrusion. The higher the degree of fit between the two, the smaller the pump cavity 10 is when the sliding plunger 43 performs work at the maximum stroke, and the greater the impact force.

[0063] The above technical solutions alone or in combination show the following beneficial effects:

[0064] The pump chamber 10 is formed by clamping the pump core 11 and the pump sleeve 12, and the driving end 4321 of the driving device 4 can be squeezed and fit with the pump core 11 to achieve the maximum compression effect of the pump chamber 10; thereby, the structural volume can be reduced, making it compact and easy to layout; compared with the traditional diaphragm pump, the driving end 4321 of this solution is not connected to the pump sleeve 12, which minimizes the damage to the elastic pump body 1 and also improves the durability.

[0065] Compared with a pump body with a hose structure, the present application provides a constant cavity through the support sleeve 13, so that the elastic pump body 1 only deforms in the deformation reset area 120. Therefore, the extrusion deformation of the drive device 4 is converted into the volume change of the pump chamber 10 to the greatest extent, which greatly improves the efficiency of pumping water.

[0066] By designing an eccentric cam 423 with a structure similar to a triangular rotor to perform cam motion and cooperate with the sliding plunger 43 to perform reciprocating motion, the maximum linear velocity of the sliding plunger 43 can be increased, thereby increasing the impact force. Compared with the traditional crank-connecting rod transmission assembly 42, the work efficiency can be greatly improved.

[0067] The deformation reset area 120 of the pump sleeve 12 is conical and fits tightly with the support sleeve 13. When the sliding plunger 43 squeezes the pump sleeve 12, the support sleeve 13 (with an unchanged cavity inside) and the driving end 4321 of the sliding plunger 43 jointly support the pump sleeve 12, so that the pump sleeve 12 deforms less under high pressure, thereby maintaining a higher impact force.

[0068] Embodiment 2:

[0069] See also Figures 5 to 10 Combined with Figure 1 to Figure 4 This embodiment provides a water flosser, comprising a water flosser body 5 and a pulse elastic pump. The driving device 4 is controlled to drive the power component of the water flosser body 5, the liquid inlet channel 2 is connected to the water supply component 52 of the water flosser body 5, and the liquid outlet channel 3 is connected to the nozzle component 53 of the water flosser body 5.

[0070] The pulse elastic pump comprises an elastic pump body 1, a liquid inlet channel 2, a liquid outlet channel 3 and a driving device 4. The elastic pump body 1 comprises a pump core 11 and a pump sleeve 12, the pump sleeve is sleeved on the pump core 11 and forms a pump chamber 10 with the pump core 11, the pump core 11 has a fitting surface 110 facing the pump chamber 10, the pump sleeve 12 has a deformation reset area 120 for elastic reset, the deformation reset area 120 is applied with force to compress / reset the pump chamber 10 to produce a volume change; the liquid inlet channel 2 is connected to the pump chamber 10 through a liquid inlet check valve 21; the liquid outlet channel 3 is connected to the pump chamber 10 through a liquid outlet check valve 31; the driving device 4 has a reciprocating driving end 4321, the driving end 4321 periodically applies a force to the deformation reset area 120, and the shape of the driving end 4321 fits the fitting surface 110.

[0071] In the material selection, the pump core 11 can be a plastic part (no deformation occurs), but at least the deformation recovery area 120 of the pump sleeve 12 or the whole is an elastomer. Here, the elastomer is interpreted as a highly elastic material that can restore its original shape after the external force is removed. In the prior art, it is implemented as a polymer material, such as nitrile rubber, etc. Since this embodiment does not involve material improvement, the material selection is all in the prior art, so no unnecessary details are given.

[0072] Please combine Figure 1 and Figure 2 , and combined with Figure 8 to Figure 10 , the driving device 4 provides a periodic squeezing force for the deformation reset zone 120, so that the elastic pump generates a pulsed water flow. Specifically, the driving device 4 includes three main components: a driving motor 41, a transmission component 42 and a sliding plunger 43. The driving motor 41 drives the sliding plunger 43 to reciprocate through the transmission component 42, thereby applying a periodic squeezing effect to the deformation reset zone 120 of the pump sleeve 12; thereby causing the volume of the pump chamber 10 to change and produce a pressure change. When the sliding plunger 43 squeezes the deformation reset zone 120 of the pump sleeve 12, the volume of the pump chamber 10 becomes smaller, and the internal overpressure state causes the water flow in the pump chamber 10 to be ejected from the liquid outlet channel 3 through the liquid outlet check valve 31; when the position of the sliding plunger 43 is restored, the deformation reset zone 120 is restored, the volume of the pump chamber 10 is restored, and the internal negative pressure state sucks the fluid in the liquid inlet channel 2 through the liquid inlet check valve 21; such a reciprocating high-frequency action forms a pulsed water flow. Furthermore, the liquid outlet one-way valve 31 and the liquid inlet one-way valve 21 may be one-way ball valves or one-way valve plates, which are not limited here.

[0073] Furthermore, the transmission assembly 42 includes a gear plate 422, a bevel gear 421 and an eccentric cam 423. The gear plate 422 is installed via a mounting shaft 424; the bevel gear 421 is installed on the drive shaft 411 of the drive motor 41 and meshes with the gear plate 422; and the eccentric cam 423 is installed eccentrically with respect to the axis of the gear plate 422. When the drive shaft 411 of the drive motor 41 rotates, the gear plate 422 is driven to rotate by the bevel gear 421, and the eccentric cam 423 is installed eccentrically with respect to the gear plate 422, so that the eccentric cam 423 performs a cam motion.

[0074] Furthermore, the sliding plunger 43 includes a plunger seat and a plunger body 432. The plunger seat has a movable matching cavity 4310 that matches the movement of the eccentric cam 423. The eccentric cam 423 is in the movable matching cavity 4310 and drives the plunger seat to reciprocate. The plunger body 432 is arranged on the side of the plunger seat facing the deformation reset area 120, and the driving end 4321 is implemented on the plunger body 432. When the eccentric cam 423 performs cam motion, because it is in the movable matching cavity 4310, it is converted into a linear reciprocating motion of the piston seat 431. Specifically, the movable matching cavity 4310 is square, and its reciprocating motion direction is defined as the length direction, and the other direction is defined as the width direction. Its dimension in the length direction is matched with the dimension of the eccentric cam 423, so that it receives the thrust formed by the cam movement of the eccentric cam 423 and is pushed to form reciprocating motion; and its dimension in the width direction is larger than the dimension of the eccentric cam 423, so that no force is formed on both sides, and thus the cam movement of the eccentric cam 423 can be converted into a linear reciprocating motion of the piston seat 431.

[0075] Furthermore, a guide groove 4311 is provided on the piston seat 431 , the direction of the guide groove 4311 is consistent with the linear direction of the reciprocating motion, and the mounting shaft 424 is located in the guide groove 4311 , thereby further playing a role in linear guiding and stabilizing.

[0076] Preferably, the eccentric cam 423 is a triangular rotor cam, and the drive device 4 can be purchased from Shanghai Feixiang Health Technology Co., Ltd. An electric drive device for the liquid outlet system in a series of water flossers (recorded in patent CN 219366250 U).

[0077] Compared with the hose structure used as the pump body in the prior art, its disadvantages are obvious. Its deformation is non-specific. When one area is under pressure, the entire area may undergo a certain expansion deformation, so that the structural deformation is large but the volume change is not obvious, resulting in insufficient impact force. As a preferred implementation of this embodiment, please combine Figure 3 and Figure 4, the present structure also includes a support sleeve 13, the bottom of the support sleeve 13 has an opening 130, and an unchanging cavity inside, the elastic pump body 1 is located in the unchanging cavity, and the deformation reset area 120 is located at the opening 130. Preferably, the support sleeve 13 is a rigid sleeve, supported by a plastic material, and is not easily deformed. Compared with a pump body with a hose structure, the present water flosser provides an unchanging cavity through a rigid sleeve, so that the elastic pump body 1 is only deformed in the deformation reset area 120. Therefore, the extrusion deformation of the drive device 4 is converted into the volume change of the pump chamber 10 to the greatest extent, so that the efficiency of pumping water is greatly improved. Preferably. Furthermore, the plunger body 432 (at least the drive end 4321) is inserted into the opening 130 and fits with the opening 130 without gap. Furthermore, the deformation reset area 120 of the pump sleeve 12 is conical, and the outer periphery is tightly fitted with the support sleeve 13. When the sliding plunger 43 squeezes the pump sleeve 12, the support sleeve 13 (with an unchanged cavity inside) and the driving end 4321 of the sliding plunger 43 jointly support the pump sleeve 12, so that the pump sleeve 12 can achieve less deformation under high pressure, but still maintain a higher impact force.

[0078] Preferably, the driving end 4321 is defined as a conical protrusion, and the mating surface 110 is a mating concave surface whose shape is adapted to the conical protrusion. The higher the degree of fit between the two, the smaller the pump cavity 10 is when the sliding plunger 43 performs work at the maximum stroke, and the greater the impact force.

[0079] As a preferred implementation of this embodiment, please refer to Figure 5 and Figure 6 The main body 5 of the oral irrigator at least includes a protective shell 54, the protective shell 54 has an installation cabin inside, the pulse elastic pump is arranged in the installation cabin, the protective shell 54 is provided with a pressure relief hole 542 for balancing the pressure inside and outside the installation cabin, and a pressure relief valve is arranged in the pressure relief hole 542. In order to prevent humid gas from invading the inside of the oral irrigator body 5 in reverse, the pressure relief valve is a one-way pressure relief valve 544, and preferably a one-way ball valve is used for the pressure relief valve. This is a prior art, so it will not be described in detail. Furthermore, a waterproof and breathable membrane 543 is also provided on the pressure relief hole 542, which can further prevent moisture from entering the installation cabin inside the protective shell 54 in a humid environment.

[0080] Please combine Figure 6 and Figure 7 In order to facilitate the drainage of the wall of the protective shell or the storage of the nozzle, a through drainage channel 541 is formed in the protective shell. As shown in the figure, the drainage channel 641 is divided into two separated ones, which is convenient for temporary storage of the nozzle or drainage.

[0081] When protecting the internal structural layout of the shell, the installation compartment between the two drainage channels 641 is implemented to protect the battery and the main board; the pulse elastic pump is arranged side by side with the two.

[0082] The oral irrigator body 5 also includes a movement bracket; the movement bracket serves as a mounting carrier of the elastic pump, and at least provides a carrier for mounting the transmission assembly 42 .

[0083] Further, please combine Figure 2 and Figure 6 The transmission assembly 42 and the sliding plunger 43 of the pulse elastic pump are installed on the movement bracket in the water flosser body 5, and the movement bracket includes a left movement bracket 511 and a right movement bracket 512, which are connected by bayonet assembly or ultrasonic connection, and then overmolded by a protective shell 54. It should be noted that the water flosser body 5 also includes components such as a battery 55, a display light, and a main board 56. This embodiment does not elaborate on the principle structure of the water flosser, and ordinary technicians in this field should be able to know it.

[0084] The present invention does not elaborate on some conventional technologies and adaptive structural changes in the implementation of this embodiment. For example, the structure of the left movement bracket 511 and the right movement bracket 512 should be compatible with the installation of the elastic pump, whether the two are fixed by screws or bonded, the position of the battery 55, the wiring of the main board 56, etc.; this can be done in a timely manner as a conventional means in the field, and this embodiment does not further limit or explain this.

[0085] The beneficial effects of adopting the above technical solution are:

[0086] The pump chamber 10 is formed by clamping the pump core 11 and the pump sleeve 12, and the driving end 4321 of the driving device 4 can be squeezed and fit with the pump core 11 to achieve the maximum compression effect of the pump chamber 10; thereby, the structural volume can be reduced, making it compact and easy to layout; compared with the traditional diaphragm pump, the driving end 4321 of this solution is not connected to the pump sleeve 12, which minimizes the damage to the elastic pump body 1 and also improves the durability.

[0087] Compared with a pump body with a hose structure, the present application provides a constant cavity through the support sleeve 13, so that the elastic pump body 1 only deforms in the deformation reset area 120. Therefore, the extrusion deformation of the drive device 4 is converted into the volume change of the pump chamber 10 to the greatest extent, which greatly improves the efficiency of pumping water.

[0088] By designing an eccentric cam 423 with a structure similar to a triangular rotor to perform cam motion and cooperate with the sliding plunger 43 to perform reciprocating motion, the maximum linear velocity of the sliding plunger 43 can be increased, thereby increasing the impact force. Compared with the traditional crank-connecting rod transmission assembly 42, the work efficiency can be greatly improved.

[0089] The deformation reset area 120 of the pump sleeve 12 is conical, and the outer periphery is tightly fitted with the support sleeve 13. When the sliding plunger 43 squeezes the pump sleeve 12, the support sleeve 13 (with an unchanged cavity inside) and the driving end 4321 of the sliding plunger 43 jointly support the pump sleeve 12, so that the pump sleeve 12 can achieve less deformation under high pressure, but still maintain a high impact force.

[0090] The waterproof and breathable membrane 543 of the body can balance the pressure between the movement and the outside and play a waterproof role.

[0091] If a traditional water flosser is placed in a humid environment for a long time, water vapor will enter the movement through the breathable membrane, thereby deteriorating the working environment inside the movement. The present application adds a one-way pressure relief valve inside the waterproof breathable membrane 543. When the pressure inside the movement is higher than the pressure outside, the pressure can pass through the one-way pressure relief valve, but the water vapor outside cannot enter the movement through the one-way pressure relief valve, thereby keeping the inside of the movement relatively dry.

[0092] It should be understood by those skilled in the art that the embodiments of the present invention described above are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments. Without departing from the principles, the embodiments of the present invention may be deformed or modified in any way.

Claims

1. Pulse elastic pump, characterized in that: include: An elastic pump body, the elastic pump body comprising a pump core and a pump sleeve, the pump sleeve being sleeved on the pump core and forming a pump cavity between the pump core, the pump core having a fitting surface facing the pump cavity, the pump sleeve having an elastically resetting deformation reset area, the deformation reset area being applied with a force to compress / reset the pump cavity to generate a volume change; A liquid inlet flow channel, the liquid inlet flow channel is connected to the pump chamber through a liquid inlet one-way valve; A liquid outlet flow channel, the liquid outlet flow channel is connected to the pump chamber through a liquid outlet one-way valve; A driving device, wherein the driving device has a reciprocating driving end, the driving end periodically applies a force to the deformation restoring area, and the shape of the driving end fits the fitting surface.

2. The pulse elastic pump according to claim 1, characterized in that: The driving device comprises: Drive motor; A transmission assembly, the transmission assembly comprising: A gear plate, wherein the gear plate is mounted via a mounting shaft; A bevel gear, the bevel gear is mounted on the drive shaft of the drive motor and meshes with the gear plate; An eccentric cam, wherein the eccentric cam is eccentrically mounted to the axis of the gear plate; A sliding plunger, the sliding plunger comprising: A plunger seat, wherein the plunger seat has a movable matching cavity for matching the movement of the eccentric cam, and the eccentric cam is in the movable matching cavity and drives the plunger seat to reciprocate; The plunger body is arranged on a side of the plunger seat facing the deformation restoring area, and the driving end is implemented on the plunger body.

3. The pulse elastic pump according to claim 2, characterized in that: It also includes a support sleeve, the bottom of which is provided with an opening, and the interior of which is provided with a constant cavity, the elastic pump body is located in the constant cavity, and the deformation restoring area is located at the opening.

4. The pulse elastic pump according to claim 3, characterized in that: The deformation restoring area is conical, and the outer periphery of the deformation restoring area fits with the opening without any gap.

5. The pulse elastic pump according to claim 3, characterized in that: The driving end is defined as a conical protrusion, and when the driving end is inserted into the opening, the outer periphery fits with the opening without any gap.

6. The pulse elastic pump according to claim 5, characterized in that: The matching surface is a matching concave surface whose shape is adapted to the conical protrusion.

7. The pulse elastic pump according to claim 1, characterized in that: At least the pump sleeve is embodied as an elastomer.

8. A water flosser, characterized in that: It comprises a water flosser body and the pulse elastic pump as described in any one of claims 1 to 7; the driving device is controlled to drive the power component of the water flosser body, the liquid inlet channel is connected to the water supply component of the water flosser body, and the liquid outlet channel is connected to the nozzle component of the water flosser body.

9. The oral rinser according to claim 8, characterized in that: The water flosser body at least includes a protective shell; the protective shell has an installation cabin inside, the pulse elastic pump is arranged in the installation cabin, the protective shell is provided with a pressure relief hole for balancing the pressure inside and outside the installation cabin, and a pressure relief valve is provided in the pressure relief hole.

10. The oral rinser according to claim 9, characterized in that: The pressure relief hole is also provided with a waterproof and breathable membrane.

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