WO2024093465A1 - 结构小巧型出液系统及便携式冲牙器 - Google Patents

结构小巧型出液系统及便携式冲牙器 Download PDF

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Publication number
WO2024093465A1
WO2024093465A1 PCT/CN2023/114733 CN2023114733W WO2024093465A1 WO 2024093465 A1 WO2024093465 A1 WO 2024093465A1 CN 2023114733 W CN2023114733 W CN 2023114733W WO 2024093465 A1 WO2024093465 A1 WO 2024093465A1
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WO
WIPO (PCT)
Prior art keywords
liquid
liquid outlet
piston
cavity
sealing ring
Prior art date
Application number
PCT/CN2023/114733
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English (en)
French (fr)
Inventor
付家全
Original Assignee
上海飞象健康科技有限公司
广东倍至健康科技有限公司
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Application filed by 上海飞象健康科技有限公司, 广东倍至健康科技有限公司 filed Critical 上海飞象健康科技有限公司
Publication of WO2024093465A1 publication Critical patent/WO2024093465A1/zh

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/02—Rinsing or air-blowing devices, e.g. using fluid jets or comprising liquid medication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/12—Valves; Arrangement of valves arranged in or on pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/14—Pistons, piston-rods or piston-rod connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections

Definitions

  • the present invention relates to the technical field of oral cleaning, and in particular to a liquid outlet system with a compact structure and a portable oral rinser.
  • 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.
  • the existing portable water flossers have small water tanks and short flushing time, and the technical solution of enlarging the water tank is not conducive to carrying around.
  • the technical problem to be solved by the present invention is to provide a small-structured liquid outlet system and a portable water flosser.
  • the overall structure is smaller and more compact, which is convenient for users to hold and carry, and achieves the purpose of saving liquid before peak use. It is particularly suitable for small products similar to water flossers.
  • the present invention provides a liquid outlet system with a compact structure, comprising:
  • a liquid pump device the liquid pump device includes a liquid pump cavity, a piston slidably arranged in the liquid pump cavity, and a piston rod liquid-tightly penetrated in the liquid pump cavity and connected to the piston, the piston divides the pump cavity of the liquid pump cavity into a rod cavity and a rodless cavity, the rodless cavity is in a negative pressure state when the piston makes a suction stroke and the increased volume change of the rodless cavity is greater than the reduced volume change of the rod cavity, the interior of the piston is integrated with a liquid outlet one-way valve that only allows the liquid in the rod cavity to flow to the rodless cavity, an annular mounting groove is provided on the outer peripheral wall of the piston, and an annular assembly groove is provided on the inner peripheral wall of the liquid pump cavity;
  • a liquid inlet flow channel, the liquid inlet flow channel is connected to the rod chamber through a liquid inlet one-way valve;
  • a liquid outlet flow channel, the liquid outlet flow channel is connected to the rodless cavity
  • a nozzle the nozzle is detachably arranged in the liquid outlet channel;
  • the liquid-tight structure includes a first sealing ring, a second sealing ring and a third sealing ring.
  • the first sealing ring is embedded in the annular mounting groove and is in liquid-tight sliding cooperation with the liquid pump cavity.
  • the second sealing ring is embedded in the annular assembly groove and is in liquid-tight cooperation with the piston rod.
  • the third sealing ring is embedded in the annular mounting groove and abuts against the radial inner side of the first sealing ring.
  • the maximum sealing pressure of the first sealing ring is greater than the maximum sealing pressure of the second sealing ring.
  • the liquid pump cavity includes an adapter and a piston tube embedded in the adapter, the adapter is internally formed with a liquid supply temporary storage cavity connected to the liquid inlet channel, and the piston tube is provided with a plurality of connecting holes connecting the rod cavity and the liquid supply temporary storage cavity.
  • the liquid outlet one-way valve includes a liquid outlet valve cavity formed inside the piston, a liquid outlet valve core constrained in the liquid outlet valve cavity in a floating manner, a liquid outlet valve seat formed inside the piston and located on the side of the liquid outlet valve cavity away from the rodless cavity, and a flow limiting structure connecting the liquid outlet valve cavity and the rodless cavity.
  • the liquid outlet valve seat has an overflow hole connecting the liquid outlet valve cavity and the rod cavity. The liquid outlet valve core abuts against the liquid outlet valve seat when the piston makes a discharge stroke, and the liquid outlet valve core is separated from the liquid outlet valve seat when the piston makes a suction stroke.
  • the overflow hole comprises a confluence hole portion extending along the axial direction of the piston and a plurality of branch hole portions extending along the radial direction of the piston, and the confluence hole portion connects all the branch hole portions to the liquid outlet valve chamber.
  • the end of the piston facing the rod chamber is conical.
  • the insertion end of the nozzle, the liquid outlet channel and the pump chamber are coaxially arranged in sequence.
  • the present invention also provides a portable water flosser, comprising the compact liquid outlet system.
  • the compact liquid outlet system and portable water flosser of the present invention have the following beneficial effects:
  • the first major innovation of the compact liquid outlet system is the setting method of the liquid outlet one-way valve.
  • the liquid outlet one-way valve is integrated into the internal structure of the piston of the liquid pump device, which can save installation space and reduce the height dimension of the compact liquid outlet system, so that the overall structure of the compact liquid outlet system is more compact, and the overall dimension can be designed to be more vibrant, especially making small products like water flossers more portable.
  • the second major innovation of the compact liquid outlet system is that a throttling function is realized when the above-mentioned piston is pulled back to perform a liquid suction stroke.
  • the above-mentioned compact liquid outlet system also includes a nozzle connected to the liquid outlet channel, and the above-mentioned rodless chamber is in a negative pressure state when the piston performs a liquid suction stroke, and the volume change increased by the rodless chamber is greater than the volume change reduced by the above-mentioned rod chamber.
  • the rodless cavity is in a negative pressure state, and the rodless cavity can generate suction on the liquid in the nozzle, so that the liquid in the nozzle flows back to make up for the difference in volume change between the rodless cavity and the rod cavity, thereby achieving the effect of saving liquid.
  • the tube cavity of the nozzle is almost or partially empty.
  • the piston starts the discharge stroke, and part of the liquid before the flow peak of the liquid pump device appears will fill the tube cavity of the nozzle, so that part of the liquid with a lower flow rate will not be ejected from the nozzle, that is, the moment when the liquid is ejected from the nozzle is when the flow peak appears or close to the flow peak.
  • liquid can be saved, and the endurance time of oral cleaning can be increased, but also the amount of liquid ejected before the flow peak appears can be reduced, so as to achieve the purpose of saving liquid before the peak, and improve the pulse sense and effective utilization rate of liquid when cleaning the user's mouth.
  • the overall structure of the piston and the piston rod can be a two-stage stepped shaft structure. Since the piston rod occupies part of the space of the rod cavity, this can not only reduce the supply amount of the liquid inlet channel, but also improve the suction capacity of the liquid pump device for the liquid in the nozzle.
  • Compact structure The third major innovation of the liquid system is the arrangement of the first sealing ring of the liquid-tight structure. In order to reduce the wall thickness of the liquid pump cavity and eliminate the stress generated by the groove structure of the liquid pump cavity, and at the same time to reduce the axial size of the piston, an annular mounting groove is provided on the outer peripheral wall of the piston, and the first sealing ring is embedded in the annular mounting groove and slides with the liquid pump cavity in a liquid-tight manner.
  • Such an arrangement can reduce the grip size of the compact liquid outlet system and further reduce the height size of the compact liquid outlet system. Since the diameter of the piston is larger than the diameter of the piston rod, there is an extra assembly spacing between the inner wall of the liquid pump cavity and the piston rod.
  • an annular assembly groove is provided on the inner peripheral wall of the liquid pump cavity; the liquid-tight structure also includes a second sealing ring, which is embedded in the annular assembly groove and slides with the piston rod in a liquid-tight manner.
  • the liquid-tight structure also includes a third sealing ring, which is embedded in the annular mounting groove and abuts against the radial inner side of the first sealing ring.
  • the first sealing ring is always in liquid-tight sliding cooperation with the liquid pump cavity under the elastic support of the third sealing ring.
  • the first sealing ring and the third sealing ring are a sealing ring assembly, and the first sealing ring is responsible for reducing friction.
  • the first sealing ring, the second sealing ring and the third sealing ring arranged in this way can improve the overall compactness of the liquid pump device and the liquid-tight structure, and fully ensure the effective operation of the liquid pump device. Therefore, the compact liquid outlet system can make its overall structure more compact, which is convenient for users to hold and carry, and achieves the purpose of saving liquid before use, and is particularly suitable for small products such as water flossers.
  • FIG1 is a front view of a compact liquid outlet system according to the present invention.
  • FIG2 is a cross-sectional view along line A-A in FIG1 ;
  • FIG3 is an enlarged view of portion B in FIG2 when the piston is performing a suction stroke
  • FIG. 4 is an enlarged view of portion B in FIG. 2 when the piston is performing a discharge stroke.
  • Liquid pump device 11 Liquid pump chamber 111 Adapter 111a Liquid supply temporary storage chamber 112 Piston tube 112a Communication hole 113 Annular mounting groove 12 Piston 121 Annular mounting groove 13 Piston rod 14 Rod cavity 15 Rodless cavity 16 Transmission mechanism 17 Driving mechanism 2 Liquid outlet check valve 21 Liquid outlet valve chamber 22 Liquid outlet valve core 23 Liquid outlet valve seat 231 Overflow hole 231a Confluence hole 231b Branch hole 24 Overcurrent limit structure 3 Liquid inlet channel 4 Liquid inlet check valve 5 Liquid outlet channel 6 Nozzles 61 Plug-in terminal 7 Liquid-tight structure 71 First sealing ring 72 Second sealing ring 73 Third sealing ring
  • the white non-solid arrows indicate the movement direction of the piston 12
  • the black solid arrows indicate the flow direction of the liquid.
  • the present invention provides a liquid outlet system with a compact structure, comprising:
  • a liquid pump device 1 the liquid pump device 1 comprises a liquid pump cavity 11, a piston 12 slidably arranged in the liquid pump cavity 11, and a piston rod 13 liquid-tightly penetrated in the liquid pump cavity 11 and connected to the piston 12, the piston 12 divides the pump cavity of the liquid pump cavity 11 into a rod cavity 14 and a rodless cavity 15, the rodless cavity 15 is in a negative pressure state when the piston 12 makes a suction stroke and the increased volume change of the rodless cavity 15 is greater than the reduced volume change of the above-mentioned rod cavity 14, the interior of the piston 12 is integrated with a liquid outlet one-way valve 2 which only allows the liquid in the rod cavity 14 to flow to the rodless cavity 15, an annular mounting groove 121 is provided on the outer peripheral wall of the piston 12, and an annular assembly groove 113 is provided on the inner peripheral wall of the liquid pump cavity 11;
  • the liquid inlet channel 3 is connected to the rod chamber 14 through the liquid inlet check valve 4;
  • a liquid outlet channel 5, the liquid outlet channel 5 is connected to the rodless cavity 15;
  • the liquid-tight structure 7 includes a first sealing ring 71, a second sealing ring 72 and a third sealing ring 73.
  • the first sealing ring 71 is embedded in the annular mounting groove 121 and is in liquid-tight sliding cooperation with the liquid pump cavity 11.
  • the second sealing ring 72 is embedded in the annular assembly groove 113 and is in liquid-tight sliding cooperation with the piston rod 13.
  • the third sealing ring 73 is embedded in the annular mounting groove 121 and abuts against the radial inner side of the first sealing ring 71.
  • the first major innovation of the compact liquid outlet system of the present invention is the arrangement of the liquid outlet check valve 2.
  • the liquid outlet check valve 2 is integrated into the internal structure of the piston 12 of the liquid pump device 1, which can save installation space and reduce the size of the structure.
  • the height dimension of the compact liquid outlet system makes the overall structure of the compact liquid outlet system more compact, and the overall dimension can be designed to be more delicate, especially making small products like water flossers more portable.
  • the second major innovation of the compact liquid outlet system of the present invention is that a throttling function is realized when the piston 12 is pulled back to perform a liquid suction stroke.
  • the compact liquid outlet system also includes a nozzle 6 connected to the liquid outlet channel 5.
  • the rodless chamber 15 is in a negative pressure state when the piston 12 performs a liquid suction stroke, and the increased volume change of the rodless chamber 15 is greater than the reduced volume change of the rod chamber 14.
  • the rodless chamber 15 can generate suction on the liquid in the nozzle 6, so that the liquid in the nozzle 6 flows back to make up for the difference in volume change between the rodless chamber 15 and the rod chamber 14, thereby achieving the effect of saving liquid.
  • the piston 12 completes the liquid suction stroke, the tube cavity of the nozzle 6 is almost or partially empty.
  • the piston 12 starts the liquid discharge stroke, and part of the liquid before the flow peak of the liquid pump device 1 appears will fill the lumen of the nozzle 6, so that part of the liquid with a lower flow rate will not be ejected from the nozzle 6, that is, the moment when the liquid is ejected from the nozzle 6 is when the flow peak appears or close to the flow peak.
  • liquid can be saved, and the endurance time of oral cleaning can be increased, but also the amount of liquid ejected before the flow peak appears can be reduced, so as to achieve the purpose of saving liquid before the peak, and improve the pulse feeling and effective utilization rate of liquid when cleaning the user's mouth.
  • the overall structure of the piston 12 and the piston rod 13 can be a two-stage stepped shaft structure. Since the piston rod 13 occupies part of the space of the rod cavity 14, this can not only reduce the supply amount of the liquid inlet channel 3, but also improve the suction capacity of the liquid pump device 1 to the liquid in the nozzle 6.
  • the third major innovation of the compact liquid outlet system of the present invention is the overall arrangement of the first sealing ring 71, the second sealing ring 72 and the third sealing ring 73 of the liquid-tight structure 7.
  • an annular mounting groove 121 is provided on the outer peripheral wall of the piston 12, and the first sealing ring 71 is embedded in the annular mounting groove 121 and is in liquid-tight sliding cooperation with the liquid pump cavity 11.
  • Such an arrangement can reduce the gripping size of the compact liquid outlet system and further reduce the height size of the compact liquid outlet system.
  • annular assembly groove 113 is provided on the inner peripheral wall of the liquid pump cavity 11; the liquid-tight structure 7 also includes a second sealing ring 72, which is embedded in the annular assembly groove 113 and slides with the piston rod 13 in a liquid-tight manner.
  • the cross section of the annular assembly groove 113 is in a ⁇ shape; in order to improve the liquid tightness, the cross section of the second sealing ring 72 is in a V shape, and the opening of the second sealing ring 72 faces the rod cavity 14.
  • the liquid-tight structure 7 also includes a third sealing ring 73, which is embedded in the annular mounting groove 121 and abuts against the radial inner side of the first sealing ring 71.
  • the cross section of the third sealing ring 73 is circular, and the cross section of the first sealing ring 71 is flat.
  • the first sealing ring 71 is always supported by the elastic support of the third sealing ring 73.
  • the first sealing ring 71 and the third sealing ring 73 are in liquid-tight sliding cooperation with the liquid pump cavity 11.
  • the first sealing ring 71 and the third sealing ring 73 are sealing ring components.
  • the first sealing ring 71 is responsible for reducing friction and is generally made of polytetrafluoroethylene (PTFE) material, carbon fiber (CF) material and carbon (C) material.
  • the third sealing ring 73 is elastic. The first sealing ring 71, the second sealing ring 72 and the third sealing ring 73 arranged in this way can improve the overall compactness of the liquid pump device 1 and the liquid-tight structure 7, and fully ensure the effective operation of the liquid pump device 1.
  • the compact liquid outlet system of the present invention can save the installation space of the liquid outlet check valve, reduce the liquid spraying amount before the flow peak of the liquid pump device 1 appears, and reduce the height and holding size of the compact liquid outlet system. That is, the overall structure of the compact liquid outlet system can be made more compact and convenient for users to hold and carry, so as to achieve the purpose of saving liquid before the peak, and is particularly suitable for small products such as water flossers.
  • the liquid pump device 1 further comprises a transmission mechanism 16 and a driving mechanism 17 , and the piston rod 13 is connected to the driving mechanism 17 via the transmission mechanism 16 .
  • the piston rod 13 is driven by the driving mechanism 17 to perform reciprocating motion.
  • the liquid pump device 1 may be a plunger pump; the transmission mechanism 16 and the drive mechanism 17 are both existing mechanisms, the transmission mechanism 16 may be an eccentric wheel assembly, and the drive mechanism 17 may be a motor assembly, which will not be described in detail here.
  • the type of the liquid inlet check valve 4 or the liquid outlet check valve 2 can be a ball valve (with a return spring) or a valve plate.
  • the maximum sealing pressure of the first sealing ring 71 is greater than the maximum sealing pressure of the second sealing ring 72.
  • the sealing structure acting on the piston 12 is disassembled from a traditional single seal into a high-pressure seal and a low-pressure seal.
  • the first sealing ring 71 is subjected to high pressure, but a small amount of leakage does not affect the work, which reduces the sealing requirements of the sealing ring that withstands high pressure;
  • the second sealing ring 72 is not allowed to leak, but because of its low working pressure, the working condition is improved and the service life is greatly extended.
  • the prior art water flosser only has a type of sealing ring called a high-pressure sealing ring.
  • the high-pressure sealing ring requires both high sealing pressure and no leakage. Therefore, compared with the prior art, the technical solution of this embodiment has lower performance requirements for the sealing ring, and the service life of the sealing ring is effectively extended.
  • the liquid pump chamber 11 includes an adapter 111 and a piston tube 112 embedded in the adapter 111.
  • the adapter 111 is internally formed with a temporary liquid storage chamber 111a connected to the liquid inlet channel 3, and the piston tube 112 is provided with a plurality of connecting holes 112a connecting the rod chamber 14 and the temporary liquid storage chamber 111a.
  • all the connecting holes 112a are arranged in a circular array with the axis of the piston tube 112 as the center line.
  • the above-mentioned liquid outlet one-way valve 2 includes a liquid outlet valve cavity 21 formed inside the piston 12, a liquid outlet valve core 22 that is constrained in the liquid outlet valve cavity 21 in a floating manner, a liquid outlet valve seat 23 formed inside the piston 12 and located on the side of the liquid outlet valve cavity 21 away from the rodless cavity 15, and an overflow limiting structure 24 (the overflow limiting structure 24 can be a retaining ring) that connects the liquid outlet valve cavity 21 and the rodless cavity 15.
  • the liquid outlet valve seat 23 has an overflow hole 231 that connects the liquid outlet valve cavity 21 and the rod cavity 14.
  • the liquid outlet valve core 22 The valve core 22 abuts against the outlet valve seat 23 when the piston 12 performs a liquid discharge stroke, and the valve core 22 separates from the outlet valve seat 23 when the piston 12 performs a liquid suction stroke.
  • the closing principle of the liquid inlet check valve 4 is: due to the downward movement of the piston 12, the rod chamber 14 becomes smaller, and the internal pressure of the rod chamber 14 increases. Since the opening direction of the liquid inlet check valve 4 is from the liquid inlet channel 3 to the rod chamber 14, the liquid inlet check valve 4 is always in a closed state.
  • the opening principle of the liquid outlet check valve 2 is: due to the downward movement of the piston 12, the liquid in the rod chamber 14 squeezes toward the overflow hole 231, and the liquid pushes open the liquid outlet valve core 22 of the liquid outlet check valve 2. At this time, the liquid in the rod chamber 14 flows into the rodless chamber 15 through the liquid outlet valve chamber 21.
  • the volume of the rod chamber 14 increases due to the upward movement of the piston 12, and the internal pressure of the rod chamber 14 decreases. Since the opening direction of the liquid inlet check valve 4 is from the liquid inlet channel 3 to the rod chamber 14, the liquid in the liquid inlet channel 3 pushes the liquid inlet check valve 4 open, and then flows into the rod chamber 14.
  • the closing principle of the liquid outlet check valve 2 Since the piston 12 wants to squeeze out the liquid in the rodless chamber 15, the internal force of the rodless chamber 15 increases, so that the liquid outlet valve core 22 of the liquid outlet check valve 2 is liquid-tightly pressed against the liquid outlet valve seat 23 to block the overflow hole 231 of the liquid outlet valve seat 23, and the piston 12 squeezes the liquid in the rodless chamber 15, and finally the liquid is ejected from the nozzle 6 through the liquid outlet channel 5.
  • the piston 12 performs a liquid discharge stroke, the liquid inlet process of the rod chamber 14 and the liquid discharge process of the rodless chamber 15 are carried out simultaneously.
  • the overflow hole 231 includes a confluence hole portion 231a extending along the axial direction of the piston 12 and a plurality of branch hole portions 231b extending along the radial direction of the piston 12.
  • the confluence hole portion 231a connects all the branch hole portions 231b to the liquid outlet valve chamber 21.
  • the number of the branch hole portions 231b is four and they are distributed in a cross shape.
  • the end of the piston 12 facing the rod chamber 14 is conical. In this way, when the piston 12 moves downward to the limit position, the liquid inlet check valve 4 and the rod chamber 14 are still in a connected state. Specifically, when the piston 12 moves downward to the limit position, the piston 12 will not block the connecting hole 112a of the piston tube 112.
  • the insertion end 61 of the nozzle 6, the liquid outlet channel 5 and the pump chamber are coaxially arranged in sequence.
  • the present invention also provides a portable water flosser, comprising the above-mentioned compact liquid outlet system.
  • the portable oral irrigator of the present invention can be easily put into a pocket, waist bag, etc. by the user, and is easy for the user to hold, which greatly improves the portability of the product when the user is traveling and the convenience of the user when using it, and is particularly suitable for women or children.
  • the compact liquid outlet system and portable water flosser of the present invention are more compact and easy for users to hold and carry, and can save liquid before use, and are particularly suitable for small products such as water flossers. Therefore, the present invention effectively overcomes various shortcomings of the prior art and has high industrial utilization value.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
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  • Details Of Reciprocating Pumps (AREA)

Abstract

一种结构小巧型出液系统及便携式冲牙器，包括：液泵装置（1），液泵装置（1）包括液泵腔体（11）、滑动设置于液泵腔体（11）内的活塞（12）以及液密穿设于液泵腔体（11）且连接于活塞（12）的活塞杆（13），活塞（12）将液泵腔体（11）的泵腔分隔成有杆腔（14）和无杆腔（15），活塞（12）的内部集成有只允许有杆腔（14）内的液体流向无杆腔（15）的出液单向阀（2），活塞（12）的外周壁上开设有环形安装槽（121）；进液流道（3），进液流道（3）通过进液单向阀（4）连通于有杆腔（14）；出液流道（5），出液流道（5）连通于无杆腔（15）；喷嘴（6），喷嘴（6）可拆卸设置于出液流道（5）内；液密结构（7），液密结构（7）包括第一密封圈（71），第一密封圈（71）嵌设于环形安装槽（121）内并且与液泵腔体（11）液密滑动配合。

Description

结构小巧型出液系统及便携式冲牙器 技术领域
本发明涉及口腔清洗技术领域，特别是涉及一种结构小巧型出液系统及便携式冲牙器。
背景技术
随着生活水平的提高，人们对口腔护理的意识逐渐提高，市面上的口腔清洁工具也越发多样，其中，冲牙器作为传统牙线的替代品成了家庭必备小家电之一。其基本工作原理为利用泵体从水箱中抽水，经过喷嘴喷射出每分钟几百次乃至上千次的高压脉冲水流用以清理牙齿缝隙中的食物残渣、牙菌斑以及按摩牙龈等，改善口腔环境。
消费者对便携式冲牙器的要求是：希望产品尺寸尽量小。然而，现有产品的电机、齿轮、柱塞、出口单向阀以及喷嘴的安装顺序是从下向上布置的，导致现有产品的高度尺寸依然较大；现有产品的密封圈结构往往都安装在液泵腔体上，导致现有产品的握持尺寸亦依然较大。
此外，现有的便携式冲牙器的水箱小，冲洗续航时间短，采用增大水箱的技术方案不利于随身携带。
发明内容
鉴于以上所述现有技术的缺点，本发明要解决的技术问题在于提供一种结构小巧型出液系统及便携式冲牙器，整体结构更加小巧紧凑，便于用户握持和携带，并且实现峰前节省液体的目的，尤其适合应用于类似冲牙器的小型产品。
为了解决上述技术问题，本发明提供一种结构小巧型出液系统，包括：
液泵装置，液泵装置包括液泵腔体、滑动设置于液泵腔体内的活塞以及液密穿设于液泵腔体且连接于活塞的活塞杆，活塞将液泵腔体的泵腔分隔成有杆腔和无杆腔，无杆腔在活塞做吸液冲程时呈负压状态并且无杆腔所增多的体积变化量大于所述有杆腔所减少的体积变化量，活塞的内部集成有只允许有杆腔内的液体流向无杆腔的出液单向阀，活塞的外周壁上开设有环形安装槽，液泵腔体的内周壁上开设有环形装配槽；
进液流道，进液流道通过进液单向阀连通于有杆腔；
出液流道，出液流道连通于无杆腔；
喷嘴，喷嘴可拆卸设置于出液流道内；
液密结构，液密结构包括第一密封圈、第二密封圈以及第三密封圈，第一密封圈嵌设于环形安装槽内并且与液泵腔体液密滑动配合，第二密封圈嵌设于环形装配槽并且与活塞杆液 密滑动配合，第三密封圈嵌设于环形安装槽并且抵接于第一密封圈的径向内侧。
优选地，所述第一密封圈的最大密封压力大于第二密封圈的最大密封压力。
优选地，所述液泵腔体包括转接头和内嵌于转接头的活塞管，转接头的内部成型有与进液流道连通的供液暂存腔，活塞管上设有将有杆腔和供液暂存腔连通的多个连通孔。
优选地，所述出液单向阀包括成型于活塞内部的出液阀腔、沉浮地被约束于出液阀腔中的出液阀芯、成型于活塞内部且位于出液阀腔远离无杆腔的一侧的出液阀座以及将出液阀腔和无杆腔连通的过流限位结构，出液阀座具有将出液阀腔和有杆腔连通的溢液孔，出液阀芯在活塞做排液冲程时抵接于出液阀座，出液阀芯在活塞做吸液冲程时分离于出液阀座。
优选地，所述溢液孔包括沿活塞轴向延伸的汇流孔部以及沿活塞径向延伸的多个支流孔部，汇流孔部将所有支流孔部连通至出液阀腔。
优选地，所述活塞朝向有杆腔的端部呈圆锥状。
优选地，所述喷嘴的插设端、所述出液流道以及所述泵腔依次同轴布置。
本发明还提供一种便携式冲牙器，包括所述结构小巧型出液系统。
如上所述，本发明的结构小巧型出液系统及便携式冲牙器，具有以下有益效果：结构小巧型出液系统的第一个主要创新点在于：出液单向阀的设置方式。出液单向阀集成于液泵装置的活塞的内部结构中，这样能够节省安装空间，减少该结构小巧型出液系统的高度尺寸，从而使得结构小巧型出液系统的整体结构更加紧凑，整体尺寸可以设计得更加精巧，尤其能够使类似冲牙器的小型产品更具有便携性。结构小巧型出液系统的第二个主要创新点在于：在上述活塞被回拉做吸液冲程时实现节流功能。上述结构小巧型出液系统还包括连通于出液流道的喷嘴，上述无杆腔在活塞做吸液冲程时呈负压状态并且无杆腔所增多的体积变化量大于上述有杆腔所减少的体积变化量。使用时，当活塞下移时，由于无杆腔呈负压状态，无杆腔能够对喷嘴内的液体产生吸力，从而喷嘴内的液体回流补足无杆腔和有杆腔之间的体积变化量的差值，从而实现节省液体的作用。当活塞完成吸液冲程时，喷嘴的管腔几乎或者部分是空的。随后，活塞开始进行排液冲程，在液泵装置的流量峰值出现前的部分液体会充满喷嘴的管腔，这样流速较低的部分液体不会从喷嘴喷出，也就是说，液体从喷嘴喷出的时刻为流量峰值出现时或者接近于流量峰值出现时。这样不仅能够充分利用暂留于喷嘴的液体，节省液体，增加口腔清洗的续航时间，而且能够减少在流量峰值出现前的液体喷出量，实现峰前节省液体的目的，提高液体对用户口腔清洗时的脉冲感和有效利用率。此外，活塞和活塞杆的整体构造可以呈二级阶梯轴结构，由于活塞杆占据了有杆腔的部分空间，这样不仅能够减少进液流道的供给量，而且能够提高液泵装置对喷嘴中的液体的吸入能力。结构小巧型出 液系统的第三个主要创新点在于：液密结构的第一密封圈的设置方式。为了减小上述液泵腔体的壁厚并且消除液泵腔体因开设凹槽结构而产生应力，同时为了减小活塞的轴向尺寸，活塞的外周壁上开设有环形安装槽，第一密封圈嵌设于环形安装槽内并且与液泵腔体液密滑动配合。如此设置，能够减小该结构小巧型出液系统的握持尺寸和进一步减小该结构小巧型出液系统的高度尺寸。由于上述活塞的直径大于活塞杆的直径，液泵腔体的内壁和活塞杆之间有多余的装配间距，为了进一步提高液泵装置和液密结构的整体紧凑度，上述液泵腔体的内周壁上开设有环形装配槽；上述液密结构还包括第二密封圈，第二密封圈嵌设于环形装配槽并且与活塞杆液密滑动配合。为了有效保证上述第一密封圈和液泵腔体之间的液密性，上述液密结构还包括第三密封圈，第三密封圈嵌设于环形安装槽并且抵接于第一密封圈的径向内侧。这样，第一密封圈在第三密封圈的弹性支撑下始终与液泵腔体液密滑动配合。此外，第一密封圈和第三密封圈为密封圈组件，第一密封圈负责减小摩擦力。如此布置的第一密封圈、第二密封圈以及第三密封圈能够提高液泵装置和液密结构的整体紧凑性，充分保证液泵装置的有效运行。因此，结构小巧型出液系统能够使自身整体结构更加小巧紧凑，便于用户握持和携带，实现峰前节省液体的目的，尤其适合应用于类似冲牙器的小型产品。
附图说明
图1显示为本发明的结构小巧型出液系统的主视图；
图2显示为沿图1中A—A线的剖视图；
图3显示为图2中B部分在活塞做吸液冲程时的放大图；
图4显示为图2中B部分在活塞做排液冲程时的放大图。
元件标号说明
1                      液泵装置
11                     液泵腔体
111                    转接头
111a                   供液暂存腔
112                    活塞管
112a                   连通孔
113                    环形装配槽
12                     活塞
121                    环形安装槽
13                     活塞杆
14                     有杆腔
15                     无杆腔
16                     传动机构
17                     驱动机构
2                      出液单向阀
21                     出液阀腔
22                     出液阀芯
23                     出液阀座
231                    溢液孔
231a                   汇流孔部
231b                   支流孔部
24                     过流限位结构
3                      进液流道
4                      进液单向阀
5                      出液流道
6                      喷嘴
61                     插设端
7                      液密结构
71                     第一密封圈
72                     第二密封圈
73                     第三密封圈
具体实施方式
以下由特定的具体实施例说明本发明的实施方式，熟悉此技术的人士可由本说明书所揭露的内容轻易地了解本发明的其他优点及功效。
须知，本说明书所附图中所绘示的结构、比例、大小等，均仅用以配合说明书所揭示的内容，以供熟悉此技术的人士了解与阅读，并非用以限定本发明可实施的限定条件，故不具技术上的实质意义，任何结构的修饰、比例关系的改变或大小的调整，在不影响本发明所能 产生的功效及所能达成的目的下，均应仍落在本发明所揭示的技术内容所能涵盖的范围内。同时，本说明书中所引用的如“上”、“下”、“左”、“右”、“中间”及“一”等的用语，亦仅为便于叙述的明了，而非用以限定本发明可实施的范围，其相对关系的改变或调整，在无实质变更技术内容下，当亦视为本发明可实施的范畴。
在图3和图4中，白色非实心的箭头表示活塞12的运动方向，黑色实心的箭头表示液体的流动方向。
如图1、图2、图3以及图4所示，本发明提供一种结构小巧型出液系统，包括：
液泵装置1，液泵装置1包括液泵腔体11、滑动设置于液泵腔体11内的活塞12以及液密穿设于液泵腔体11且连接于活塞12的活塞杆13，活塞12将液泵腔体11的泵腔分隔成有杆腔14和无杆腔15，无杆腔15在活塞12做吸液冲程时呈负压状态并且无杆腔15所增多的体积变化量大于上述有杆腔14所减少的体积变化量，活塞12的内部集成有只允许有杆腔14内的液体流向无杆腔15的出液单向阀2，活塞12的外周壁上开设有环形安装槽121，液泵腔体11的内周壁上开设有环形装配槽113；
进液流道3，进液流道3通过进液单向阀4连通于有杆腔14；
出液流道5，出液流道5连通于无杆腔15；
喷嘴6，喷嘴6可拆卸设置于出液流道5内；
液密结构7，液密结构7包括第一密封圈71、第二密封圈72以及第三密封圈73，第一密封圈71嵌设于环形安装槽121内并且与液泵腔体11液密滑动配合，第二密封圈72嵌设于环形装配槽113并且与活塞杆13液密滑动配合，第三密封圈73嵌设于环形安装槽121并且抵接于第一密封圈71的径向内侧。
在本发明的结构小巧型出液系统中，请具体参见图3，当活塞12被活塞杆13回拉做吸液冲程时，有杆腔14的内压增大并且无杆腔15的内压变小，进液单向阀4切换至关闭状态，出液单向阀2切换至打开状态，有杆腔14内的液体能够克服出液单向阀2的关闭预紧力流入无杆腔15。
请具体参见图4，当活塞12被活塞杆13推出做排液冲程时，有杆腔14的内压增小并且无杆腔15的内压增大，进液单向阀4切换至打开状态，进液流道3内的液体能够克服进液单向阀4的关闭预紧力流入有杆腔14；与此同时，出液单向阀2切换至关闭状态，无杆腔15内液体被活塞12挤入出液流道5。
本发明的结构小巧型出液系统的第一个主要创新点在于：出液单向阀2的设置方式。出液单向阀2集成于液泵装置1的活塞12的内部结构中，这样能够节省安装空间，减少该结构 小巧型出液系统的高度尺寸，从而使得结构小巧型出液系统的整体结构更加紧凑，整体尺寸可以设计得更加精巧，尤其能够使类似冲牙器的小型产品更具有便携性。
如图2和图3所示，本发明的结构小巧型出液系统的第二个主要创新点在于：在上述活塞12被回拉做吸液冲程时实现节流功能。上述结构小巧型出液系统还包括连通于出液流道5的喷嘴6，上述无杆腔15在活塞12做吸液冲程时呈负压状态并且无杆腔15所增多的体积变化量大于上述有杆腔14所减少的体积变化量。使用时，当活塞12下移时，由于无杆腔15呈负压状态，无杆腔15能够对喷嘴6内的液体产生吸力，从而喷嘴6内的液体回流补足无杆腔15和有杆腔14之间的体积变化量的差值，从而实现节省液体的作用。当活塞12完成吸液冲程时，喷嘴6的管腔几乎或者部分是空的。随后，活塞12开始进行排液冲程，在液泵装置1的流量峰值出现前的部分液体会充满喷嘴6的管腔，这样流速较低的部分液体不会从喷嘴6喷出，也就是说，液体从喷嘴6喷出的时刻为流量峰值出现时或者接近于流量峰值出现时。这样不仅能够充分利用暂留于喷嘴6的液体，节省液体，增加口腔清洗的续航时间，而且能够减少在流量峰值出现前的液体喷出量，实现峰前节省液体的目的，提高液体对用户口腔清洗时的脉冲感和有效利用率。此外，活塞12和活塞杆13的整体构造可以呈二级阶梯轴结构，由于活塞杆13占据了有杆腔14的部分空间，这样不仅能够减少进液流道3的供给量，而且能够提高液泵装置1对喷嘴6中的液体的吸入能力。
本发明的结构小巧型出液系统的第三个主要创新点在于：液密结构7的第一密封圈71、第二密封圈72以及第三密封圈73的整体布置方式。为了减小上述液泵腔体11的壁厚并且消除液泵腔体11因开设凹槽结构而产生应力，同时为了减小活塞12的轴向尺寸，活塞12的外周壁上开设有环形安装槽121，第一密封圈71嵌设于环形安装槽121内并且与液泵腔体11液密滑动配合。如此设置，能够减小该结构小巧型出液系统的握持尺寸和进一步减小该结构小巧型出液系统的高度尺寸。由于上述活塞12的直径大于活塞杆13的直径，液泵腔体11的内壁和活塞杆13之间有多余的装配间距，为了进一步提高液泵装置1和液密结构7的整体紧凑度，上述液泵腔体11的内周壁上开设有环形装配槽113；上述液密结构7还包括第二密封圈72，第二密封圈72嵌设于环形装配槽113并且与活塞杆13液密滑动配合。进一步的，为了便于嵌设该第二密封圈72，环形装配槽113的横截面呈匚型；为了提高液密性，第二密封圈72的横截面呈V型，第二密封圈72的开口朝向有杆腔14。为了有效保证上述第一密封圈71和液泵腔体11之间的液密性，上述液密结构7还包括第三密封圈73，第三密封圈73嵌设于环形安装槽121并且抵接于第一密封圈71的径向内侧。第三密封圈73的横截面呈圆形，第一密封圈71的横截面呈扁平状，这样，第一密封圈71在第三密封圈73的弹性支撑下始终 与液泵腔体11液密滑动配合。此外，第一密封圈71和第三密封圈73为密封圈组件，第一密封圈71负责减小摩擦力，一般由聚四氟乙烯(PTFE)材料、碳素纤维(CF)材料以及碳(C)材料制造而成。第三密封圈73富有弹性。如此布置的第一密封圈71、第二密封圈72以及第三密封圈73能够提高液泵装置1和液密结构7的整体紧凑性，充分保证液泵装置1的有效运行。
因此，本发明的结构小巧型出液系统能够节省出液单向阀的安装空间，减少在液泵装置1的流量峰值出现前的液体喷出量，减小结构小巧型出液系统的高度尺寸和握持尺寸。即能够使该结构小巧型出液系统的整体结构更加小巧紧凑，便于用户握持和携带，实现峰前节省液体的目的，尤其适合应用于类似冲牙器的小型产品。
如图2所示，上述液泵装置1还包括传动机构16和驱动机构17，活塞杆13通过传动机构16传动连接于驱动机构17。活塞杆13在驱动机构17的驱动下做往复运动。
上述液泵装置1可以是柱塞泵；上述传动机构16和驱动机构17均为现有机构，传动机构16可以是偏心轮组件，驱动机构17可以电机组件，此处不再赘述。
上述进液单向阀4或出液单向阀2的类型可以为球阀(带复位弹簧)，也可以为阀片。
进一步的，上述第一密封圈71的最大密封压力大于第二密封圈72的最大密封压力。把作用于活塞12的密封结构由传统的单密封件，拆解为高压密封件和低压密封件。第一密封圈71承受高压力，但是少量泄露不影响工作，降低了承受高压的密封圈的密封性要求；第二密封圈72不允许泄露，但是由于其工作压力低，使得工况得到改善，使用寿命极大延长。现有技术的冲牙器只有高压密封圈这一类密封圈，高压密封圈既要求密封压力高又不允许泄露，因此与现有技术相比，本实施例的技术方案对密封圈的性能要求降低，密封圈使用寿命有效延长。
如图4所示，为了便于上述进液流道3内的液体顺畅引入有杆腔14，上述液泵腔体11包括转接头111和内嵌于转接头111的活塞管112，转接头111的内部成型有与进液流道3连通的供液暂存腔111a，活塞管112上设有将有杆腔14和供液暂存腔111a连通的多个连通孔112a。具体的，所有连通孔112a以活塞管112的轴线为圆心线进行圆周阵列。
为了简化上述进液单向阀2的结构，并且使上述进液单向阀2仅依靠活塞12的往复运动切换自身开闭状态，上述出液单向阀2包括成型于活塞12内部的出液阀腔21、沉浮地被约束于出液阀腔21中的出液阀芯22、成型于活塞12内部且位于出液阀腔21远离无杆腔15的一侧的出液阀座23以及将出液阀腔21和无杆腔15连通的过流限位结构24(过流限位结构24可以是挡圈)，出液阀座23具有将出液阀腔21和有杆腔14连通的溢液孔231，出液阀芯 22在活塞12做排液冲程时抵接于出液阀座23，出液阀芯22在活塞12做吸液冲程时分离于出液阀座23。
使用时，当活塞12被回拉做吸液冲程时，进液单向阀4的关闭原理：由于活塞12下移，有杆腔14变小，有杆腔14的内压增大，又由于进液单向阀4的打开方向是从进液流道3至有杆腔14，使得进液单向阀4始终处于关闭状态。出液单向阀2的开启原理：由于活塞12下移，有杆腔14的液体挤向溢液孔231，液体顶开了出液单向阀2的出液阀芯22，此时，有杆腔14的液体经出液阀腔21流入无杆腔15。
当活塞12做排液冲程时，由于活塞12上移，有杆腔14的体积变大，有杆腔14的内压减小，又由于进液单向阀4的打开方向是从进液流道3至有杆腔14，使得进液流道3内的液体顶开进液单向阀4，从而流入有杆腔14。出液单向阀2的关闭原理：由于活塞12要挤出无杆腔15中的液体，无杆腔15的内力增大，从而将出液单向阀2的出液阀芯22液密抵触至出液阀座23以封堵出液阀座23的溢液孔231，活塞12挤压无杆腔15的液体，最终液体通过出液流道5从喷嘴6喷出。也就是说，当活塞12做排液冲程时，有杆腔14的进液过程和无杆腔15的排液过程是同时进行的。
如图3所示，为了使上述有杆腔14内的液体更加快速、顺畅地流入出液阀腔21，上述溢液孔231包括沿活塞12轴向延伸的汇流孔部231a以及沿活塞12径向延伸的多个支流孔部231b，汇流孔部231a将所有支流孔部231b连通至出液阀腔21。具体的，支流孔部231b的数量为四个并且呈十字型分布。
优选地，上述活塞12朝向有杆腔14的端部呈圆锥状。如此设置，当活塞12朝下运动至极限位置时，进液单向阀4和有杆腔14之间依旧处于连通状态。具体的，当活塞12朝下运动至极限位置时，活塞12不会封堵上述活塞管112的连通孔112a。
为了使上述喷嘴6和无杆腔15之间的液体流动更加顺畅，上述喷嘴6的插设端61、上述出液流道5以及上述泵腔依次同轴布置。
本发明还提供一种便携式冲牙器，包括上述结构小巧型出液系统。
本发明的便携式冲牙器能够便于用户放入口袋、腰包等，并且便于用户握持，极大提高产品在用户出行时的便携性和在用户使用时的方便性，尤其适用于女性或儿童。
综上所述，本发明结构小巧型出液系统及便携式冲牙器，整体结构更加小巧紧凑，便于用户握持和携带，并且实现峰前节省液体的目的，尤其适合应用于类似冲牙器的小型产品。所以，本发明有效克服了现有技术中的种种缺点而具高度产业利用价值。
上述实施例仅例示性说明本发明的原理及其功效，而非用于限制本发明。任何熟悉此技 术的人士皆可在不违背本发明的精神及范畴下，对上述实施例进行修饰或改变。因此，举凡所属技术领域中具有通常知识者在未脱离本发明所揭示的精神与技术思想下所完成的一切等效修饰或改变，仍应由本发明的权利要求所涵盖。

Claims (8)

  1. 一种结构小巧型出液系统，其特征在于，包括：
    液泵装置(1)，液泵装置(1)包括液泵腔体(11)、滑动设置于液泵腔体(11)内的活塞(12)以及液密穿设于液泵腔体(11)且连接于活塞(12)的活塞杆(13)，活塞(12)将液泵腔体(11)的泵腔分隔成有杆腔(14)和无杆腔(15)，无杆腔(15)在活塞(12)做吸液冲程时呈负压状态并且无杆腔(15)所增多的体积变化量大于所述有杆腔(14)所减少的体积变化量，活塞(12)的内部集成有只允许有杆腔(14)内的液体流向无杆腔(15)的出液单向阀(2)，活塞(12)的外周壁上开设有环形安装槽(121)，液泵腔体(11)的内周壁上开设有环形装配槽(113)；
    进液流道(3)，进液流道(3)通过进液单向阀(4)连通于有杆腔(14)；
    出液流道(5)，出液流道(5)连通于无杆腔(15)；
    喷嘴(6)，喷嘴(6)可拆卸设置于出液流道(5)内；
    液密结构(7)，液密结构(7)包括第一密封圈(71)、第二密封圈(72)以及第三密封圈(73)，第一密封圈(71)嵌设于环形安装槽(121)内并且与液泵腔体(11)液密滑动配合，第二密封圈(72)嵌设于环形装配槽(113)并且与活塞杆(13)液密滑动配合，第三密封圈(73)嵌设于环形安装槽(121)并且抵接于第一密封圈(71)的径向内侧。
  2. 根据权利要求1所述的结构小巧型出液系统，其特征在于：所述第一密封圈(71)的最大密封压力大于第二密封圈(72)的最大密封压力。
  3. 根据权利要求1所述的结构小巧型出液系统，其特征在于：所述液泵腔体(11)包括转接头(111)和内嵌于转接头(111)的活塞管(112)，转接头(111)的内部成型有与进液流道(3)连通的供液暂存腔(111a)，活塞管(112)上设有将有杆腔(14)和供液暂存腔(111a)连通的多个连通孔(112a)。
  4. 根据权利要求1所述的结构小巧型出液系统，其特征在于：所述出液单向阀(2)包括成型于活塞(12)内部的出液阀腔(21)、沉浮地被约束于出液阀腔(21)中的出液阀芯(22)、成型于活塞(12)内部且位于出液阀腔(21)远离无杆腔(15)的一侧的出液阀座(23)以及将出液阀腔(21)和无杆腔(15)连通的过流限位结构(24)，出液阀座(23)具有将出液阀腔(21)和有杆腔(14)连通的溢液孔(231)，出液阀芯(22)在活塞(12)做排液冲程时抵接于出液阀座(23)，出液阀芯(22)在活塞(12)做吸液冲程时分离于出液阀座(23)。
  5. 根据权利要求4所述的结构小巧型出液系统，其特征在于：所述溢液孔(231)包括沿活塞(12)轴向延伸的汇流孔部(231a)以及沿活塞(12)径向延伸的多个支流孔部(231b)，汇流孔部(231a)将所有支流孔部(231b)连通至出液阀腔(21)。
  6. 根据权利要求1所述的结构小巧型出液系统，其特征在于：所述活塞(12)朝向有杆腔(14)的端部呈圆锥状。
  7. 根据权利要求1所述的结构小巧型出液系统，其特征在于：所述喷嘴(6)的插设端(61)、所述出液流道(5)以及所述泵腔依次同轴布置。
  8. 一种便携式冲牙器，其特征在于：包括如权利要求1至权利要求7任一项所述的结构小巧型出液系统。
PCT/CN2023/114733 2022-11-04 2023-08-24 结构小巧型出液系统及便携式冲牙器 WO2024093465A1 (zh)

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