WO2010091580A1 - 一种活塞式吸奶器 - Google Patents

一种活塞式吸奶器 Download PDF

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Publication number
WO2010091580A1
WO2010091580A1 PCT/CN2009/074944 CN2009074944W WO2010091580A1 WO 2010091580 A1 WO2010091580 A1 WO 2010091580A1 CN 2009074944 W CN2009074944 W CN 2009074944W WO 2010091580 A1 WO2010091580 A1 WO 2010091580A1
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WO
WIPO (PCT)
Prior art keywords
gear
breast pump
piston type
piston
rocker
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2009/074944
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English (en)
French (fr)
Inventor
郭永峰
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US13/138,085 priority Critical patent/US8465449B2/en
Priority to EP09839903.3A priority patent/EP2397166A4/en
Publication of WO2010091580A1 publication Critical patent/WO2010091580A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/06—Milking pumps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/06—Milking pumps
    • A61M1/069—Means for improving milking yield
    • A61M1/0693—Means for improving milking yield with programmable or pre-programmed sucking patterns
    • A61M1/06935—Means for improving milking yield with programmable or pre-programmed sucking patterns imitating the suckling of an infant
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/80—Suction pumps
    • A61M1/81—Piston pumps, e.g. syringes

Definitions

  • the invention relates to a breast pump for humans, in particular to a piston breast pump. Background technique
  • the existing breast pump technology is divided into diaphragm type and piston type.
  • the diaphragm type is simple in structure and easy to implement. However, the flow rate is small and the efficiency is low. To press the intermittent vacuum quickly, the negative pressure value is small. Manual type often causes the user's hands to fatigue. The electric suction effect lacks rhythm, and the suction is small, which is different from the sucking frequency of the baby.
  • the piston pump has a large stroke and is close to the sucking frequency of the baby.
  • suction and efficiency users complain that the market products are insufficiently sucked and inefficient.
  • Some static suction is large but dynamic suction is insufficient.
  • the piston-type electric breast pump with large suction is too large and is not suitable for portable requirements. Smaller volumes tend to have insufficient suction.
  • the piston pump also has a lot of noise and vibration.
  • function there is no speed, the stroke is continuously adjustable, there is a quick-twisting simulation, and there is a multi-function machine with the whole machine suction adjustment.
  • the piston-type electric breast pump that meets the requirements of high efficiency, heavy load, small size, quiet and versatile adjustment is still blank. Summary of the invention
  • the present invention aims to improve the overall performance of the piston pump, and provides a piston type breast pump that is small in size, high in efficiency, large in suction, low in noise and low in vibration, and provides more functions.
  • a piston type breast pump comprising a piston type suction device disposed in a casing.
  • a DC motor, a gear reduction mechanism and a control circuit board are further arranged in the housing;
  • the piston suction device is connected with a gear rocker matched with the gear reduction mechanism; and the near-point sensing sheet is arranged between the gear rocker and the speed reduction mechanism And set the buffer tones Spring;
  • the body is of vertical design, with a concave bottle position, the bottle holder is Detachable type.
  • the housing comprises a front shell, a rear shell and a base; a speed adjusting knob, a stroke adjusting knob and a quick sucking milk button are arranged on the front shell and coupled with the control circuit board; the bottle body is two on the front shell
  • the semi-circular surface, the lower part of the semi-circular surface is equipped with a bottle holder for placing the bottle; the front case is also provided with an output joint through the hose and the bottle; the suction adjusting screw is arranged on the rear case.
  • the gear reduction mechanism includes a bearing seat connected to the base, and the opening and closing surface of the bearing seat is a slope; the rocker turns to the mandrel, the pinion shaft and the large gear shaft in sequence; the end of the rocker shaft is matched a fan-shaped gear rocker; a pinion shaft is provided with a gear in the middle, and a large pulley is arranged at the end; a large gear is arranged in the middle of the large gear shaft with a gear on the pinion shaft, and a pinion, pinion and gear are arranged at the end
  • the tooth surface of the rocker is matched; the edge of the gear rocker is connected to the piston suction device through a rocking shaft; the large pulley is connected to the DC motor through a belt and a small pulley.
  • the piston type suction device comprises a cylinder and a piston matched with the cylinder inner cavity, and an output tube and a joint output port are arranged at the cylinder end surface, and the output tube is connected with the output joint on the front shell; the cylinder end surface is hinged to one
  • the bracket is connected to the base; a throttle valve is arranged on the bracket, and the throttle valve is connected to the joint output through the hose.
  • the bottle holder is provided with a mounting leg and a positioning post, and the housing is provided with a corresponding positioning marble groove and a mounting hole; a positioning circular hole is arranged on the mounting leg, and the front part of the mounting foot has a slope.
  • the buffering torsion spring is sleeved on the rocker turning shaft, and the two receiving ends of the buffering torsion spring are respectively disposed on the gear rocker and the shaft 7?1 seat.
  • the far-and-close point sensing sheet is inserted into the groove of the photoelectric sensor when the gear rocker swings to the corresponding position, and functions as an induction.
  • the stroke sensing wheel is connected with the small pulley, and two sensing notches are opened on the stroke sensing wheel; A photoelectric sensor corresponding to the stroke sensing wheel is provided outside.
  • the throttle valve is composed of a valve body, a valve core, and a suction adjusting screw.
  • the valve core has a conical surface at one end and an external thread at the other end, and the valve body is provided with an inner cavity adapted to the valve core, and the valve body is further An input hole and an output hole connected to the inner cavity are provided; the valve body is mounted on the bracket, the suction adjusting screw is connected to the valve core and extends to the outside of the rear case; and the input hole is communicated with the joint output port through the hose.
  • the body is of a vertical design, that is, the piston type suction device, the gear reduction mechanism, and the direct current motor are arranged in order from top to bottom.
  • the invention adopts a low-speed high-power DC motor as a power, and the piston is driven to move back and forth by the gear rocker through the two-stage gear reduction, and a torsion spring is arranged between the gear rocker and the speed reduction mechanism, and the overall volume of the mechanism is small, the suction force is large, and the effective reduction Small vibration and noise.
  • Figure 1 is an exploded view of the present invention
  • FIG. 2 is a schematic structural view of the present invention after assembly
  • Figure 3 is a front perspective view of the present invention.
  • Figure 4 is a rear perspective view of Figure 2;
  • FIG. 5 is a rear elevational view of the present invention. detailed description
  • the DC motor 11 is equipped with a small pulley 2 on the shaft, and the pulley is double-slotted, and the large pulley 6 is driven by the double belt.
  • the large pulley 6 is mounted on the pinion shaft 7.
  • the pinion shaft 7 drives the large gear shaft 8.
  • the pinion 25 at the end of the large gear shaft 8 reengages the gear rocker 12.
  • the gear ratio between the small pulley 7 - large pulley 6, pinion - large gear, pinion 25 - gear rocker 12 is optimally distributed to minimize the overall transmission volume.
  • the three drive shafts are mounted on the same inclined surface to reduce the volume while being easy to install. As shown in Figs.
  • the cylinder 45 is suspended from the bracket 21.
  • the cylinder is pulled by the piston 44 to create a vacuum.
  • An output tube 47 is connected to the end of the cylinder, and the output tube is connected to the output joint 14 of the casing.
  • the piston 44 is hung on the rocker gear rocker 46. The forward and reverse rotation of the DC motor drives the piston to push and pull the cylinder to generate vacuum and output through the pipeline.
  • two photosensors 26 are disposed between the bearing housing 49 and the gear rocker 12, and the gear rocker 12 is provided with two correspondingly extending distal and near point sensing sheets 10.
  • the gear rocker 12 is rotated to insert a near-far sensing sheet 10 into a sensor 26, and the trigger control circuit is forward-rotated to the DC motor 11.
  • the gear rocker 12 inserts another near-far sensing sheet 10 into the other inductor 26, and the trigger control circuit inverts the DC motor 11, thereby controlling the near-remote of the cylinder.
  • a small pulley 2 is mounted on the motor shaft, a stroke sensing wheel 1 is fixed on the small pulley 2, and two sensing notches 3 are opened on the stroke sensing wheel 1; photoelectric induction is mounted on the motor cover Device 4.
  • the sensing wheel 1 rotates between the two poles of the sensor.
  • the control circuit will trigger the counting module. Each trigger corresponds to the number of 1/2 motor revolutions.
  • the stroke of the cylinder can be controlled, thereby controlling the output of the vacuum.
  • the adjustment of the number of DC motor turns is achieved by the position of the potentiometer input by the stroke control knob 34.
  • the control circuit reads the potentiometer output voltage corresponding to the number of consecutive revolutions of the DC motor.
  • the two sensing gaps on the stroke sensing wheel increase the control accuracy of the stroke, and the user does not feel the jump between the stages.
  • the sensor mounted on the DC motor shaft has higher accuracy than other positions such as the cylinder stroke, while occupying the smallest space.
  • the throttle valve 23 is composed of a valve body 51, a valve body 52, and a suction adjusting screw 56.
  • the valve body 51 and the valve body 52 are coupled by a conical surface, and the valve body 51 is provided with an input hole 54 and an output hole 55.
  • the ventilation flow rate is achieved by adjusting the opening degree of the valve body 51 and the tapered surface of the valve body 52.
  • the valve body is mounted on the bracket 21, and the spool is connected to the outside of the rear housing 20 by a suction adjusting screw 56, as shown in FIG.
  • Throttle connected to cylinder 45 Valve 23 helps to adjust the overall suction of the breast pump, providing another suction adjustment point beyond the stroke adjustment. This is very useful in adapting to the user's habits. Because users may have different strokes, suction combinations and hobbies.
  • the throttle valve 23 When the throttle valve 23 is tightened, the cylinder 45 outputs the maximum suction force at the set stroke.
  • the throttle valve 23 is released, the suction force of the bypass passage is reduced, and the amplitude corresponds to the opening degree of the throttle valve 23.
  • a speed adjustment knob 35 and a stroke adjustment knob 34 are provided on the front casing 19 of the body.
  • the speed adjustment button 35 adjusts the speed of the cylinder suction, and the suction speed controls the efficiency of the suction, and also adapts to different usage habits.
  • the control circuit senses the output voltage of the potentiometer to correspond to the voltage output to the DC motor, thus adjusting the speed.
  • the stroke adjustment button 34 functions as described above.
  • a quick squeezing button 33 is further disposed on the front casing 19 of the fuselage.
  • the button When the button is pressed, the cylinder instantaneously enters a high-frequency short-stroke suction state, and the set speed and suction are restored after a few seconds. .
  • This feature simulates a two-stage breast pumping process for infants. In the first stage, the baby will quickly suck the teat to stimulate the milk. After a few seconds, turn into a long and powerful deep draw, that is, enter the second stage.
  • This design allows the mother to press the button to enter the milk simulation during any need to prime the milk. When pressed continuously, the milking simulation can last for any length of time.
  • a buffer torsion spring 15 is provided between the bearing housing 49 and the gear rocker 12.
  • the torsion spring 15 is sleeved on the rocker turning mandrel 18, and one side is fastened to the protruding block of the bearing seat, and the other side is fastened to the rocking block protruding block 17.
  • the application of the spring buffer effectively reduces the sudden acceleration vibration and noise of the cylinder return stroke, so that the cylinders are loaded with a return load and the speed is close, and the operation is more stable.
  • Compressed cylinder springs also have a boost in the trip to help reduce the maximum power of the DC motor.
  • the device body is a vertical design.
  • the vertical design effectively reduces desktop footprint.
  • the bottle holder 36 has mounting legs 59 and positioning posts 60, 61 on the inner surface thereof, and the positioning posts are inserted into the body base mounting holes 28, 31.
  • a positioning hole 62 is provided in the mounting leg 59, and the front portion has a slope.
  • a positioning marble groove 30 is mounted on the base 18 of the body, and the mounting feet 59 are positioned after insertion. When the bottle holder 36 is pulled out, the marbles in the positioning marble groove 30 will bounce, so the bottle holder 36 is detachable. Removing the bottle holder 36 when carrying it outdoors effectively reduces the packing volume of the body.
  • the bottle holder 36 that is removed during use can be placed with the bottle 58 to stabilize the bottle.
  • the control scheme of the mechanism controls the DC motor by the voltage regulation and speed regulation type.
  • the two potentiometer inputs adjust the DC motor speed and piston stroke respectively, and the master MCU passes the internal AD set.
  • the main function of the PWM drive circuit is to adjust the speed of the DC motor.
  • High-power FET is used in this circuit.
  • the DC motor drive circuit is composed of a high-power Darlington tube.
  • the H-bridge circuit is added to the Darlington tube due to the limited drive of the microcontroller and the reduction of the interference generated by the DC motor.
  • the voltage regulation is adopted, mainly considering that the DC motor power is not large, the motor rotation needs to be stable, and the noise is reduced.
  • the PWM can achieve high efficiency and reduce the power tube heating, but the PWM speed regulation, the motor cannot run smoothly. State, motor noise will also increase, so use the voltage regulation scheme.
  • the three-way infrared pair tube input functions as a remote infrared pair tube, a short-range infrared pair tube, and a DC motor counting infrared pair tube.
  • the three-way infrared pair tube is output to the single-chip microcomputer 10 port, and the single-chip microcomputer performs real-time monitoring on this 10 .
  • the power input is controlled by two groups, which are respectively input and relayed by the built-in power supply and the external power supply via the recoverable fuse. Dual power supplies can only work in one way to prevent mutual interference.

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  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Biomedical Technology (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Pediatric Medicine (AREA)
  • External Artificial Organs (AREA)

Description

一种活塞式吸奶器 技术领域
本发明涉及一种人用吸奶装置， 尤其涉及一种活塞式吸奶器。 背景技术
现有吸奶器技术分为膜片式及活塞式两种。 膜片式结构简单， 易于实 现。 但流量小， 效率低， 要快速压按产生间歇真空， 负压值小。 手动式常 导致使用者手部疲劳。 电动式产生的吸吮效果缺少节奏感， 吸力小， 与婴 儿的吸吮频率差异大。
活塞式吸奶器有较大的行程， 与婴儿的吸吮频率接近。 在吸力和效率 上， 用户抱怨市面产品吸力不足， 效率低。 有的静态吸力大但动态吸力却 不足。 而吸力大的活塞式电动吸奶器体积过大， 不适合便携要求。 体积小 的往往吸力不足。 活塞式吸奶器还多有噪音和震动。 在功能方面， 还未见 速度， 行程连续可调， 有快吮催奶模拟， 有整机吸力调整的多功能机。 整 体而言， 满足高效， 大负荷， 体积小， 静音， 多功能可调的活塞式电动吸 奶器还是空白。 发明内容
本发明以提高活塞式吸奶器的整体性能为目的， 提供一种体积小、 效 率高、 大吸力、 低噪低震及可提供更多功能的活塞式吸奶器。
为达到上述目的， 本发明的技术方案是： 一种活塞式吸奶器， 包括一 设置在壳体内的活塞式抽吸装置。 在壳体内设还设有直流电机、 齿轮减速 机构及控制电路板； 活塞式抽吸装置与一个同齿轮减速机构配合的齿轮摇 块连接； 在齿轮摇块与减速机构间设有远近点感应薄片， 并设置有緩冲扭 簧； 在电机轴上设有行程感应轮， 在机壳外有速度和行程调节旋钮、 快吮 催奶按钮及吸力调节螺丝； 机体为立式设计， 有凹入瓶身位， 瓶托为可拆 卸型。
所述壳体包括前壳、 后壳及底座； 速度调节旋钮、 行程调节旋钮及快 吮催奶按钮设置在前壳上并与控制电路板联接； 所述瓶身位为前壳上的两 个半圓面， 半圓面下部配合有用于放置奶瓶的瓶托； 在前壳上还设有通过 软管与奶瓶连通的输出接头； 吸力调节螺丝设在后壳上。
所述齿轮减速机构包括一与底座连接的轴承座， 轴承座开合面为一斜 面； 斜面上依次设有摇块转心轴、 小齿轮轴及大齿轮轴； 摇块转心轴端部 配合扇形的齿轮摇块； 小齿轮轴中部设有齿轮， 端部设有一大皮带轮； 大 齿轮轴中部设有一与小齿轮轴上的齿轮配合的大齿轮， 端部设有一小齿轮， 小齿轮与齿轮摇块上的齿面配合； 齿轮摇块边端通过一摇轴与活塞式抽吸 装置连接； 所述大皮带轮通过皮带及一小皮带轮与直流电机连接。
所述活塞式抽吸装置包括一气缸及与气缸内腔配合的活塞， 在气缸端 面设有输出管及一接头输出口， 输出管与前壳上的输出接头连接； 所述气 缸端面铰接在一个与底座连接的支架上； 在支架上设有一节流阀， 节流阀 通过软管与接头输出口连通。
所述瓶托上设有安装脚和定位柱， 壳体上设有相应的定位弹珠槽和安 装孔； 在安装脚上带有一定位圓孔， 安装脚前部带有斜面。
所述緩冲扭簧套在摇块转心轴上， 緩冲扭簧两受力端分别设于齿轮摇 块和轴 7?1座上。
所述齿轮摇块与轴承座之间还设有两个光电感应器， 它们分别与呈凸 起状的远近点感应薄片对应。 远近点感应薄片在齿轮摇块摆动到相应位置 时插入光电感应器的凹槽， 起到感应作用。
所述行程感应轮与小皮带轮连接， 行程感应轮上开有两个感应缺口； 在行程感应轮外部设有与之对应的光电感应器。
所述节流阀由阀身、 阀芯、 及吸力调节螺丝构成， 阀芯一端带有圓锥 面另一端带有外螺紋， 阀身设有与阀芯适配的内腔， 在阀身上还设有与内 腔联通的输入孔和输出孔； 阀身安装在支架上， 吸力调节螺丝与阀芯连接 且延伸到后壳的外部； 输入孔通过软管与接头输出口连通。
所述机体为立式设计， 即指活塞式抽吸装置、 齿轮减速机构及直流电 机由上至下依次排布。
本发明釆用低速大功率直流电机作为动力， 通过两级齿轮减速由齿轮 摇块带动活塞来回移动， 并且在齿轮摇块与减速机构间设置有扭簧， 机构 整体体积小、 吸力大， 有效减小震动及噪音。 附图说明
下面结合附图和较佳实施例对本发明作详细的说明， 其中：
图 1为本发明分解图；
图 2为本发明装配后的结构示意图；
图 3为本发明的正面透视图；
图 4为图 2的背面透视图；
图 5为本发明后视图。 具体实施方式
如图 1、 图 3及图 4所示， 直流电机 11轴上装有小皮带轮 2 , 皮带轮 是双槽的， 经双皮带带动大皮带轮 6。 大皮带轮 6装在小齿轮轴 7上。 小齿 轮轴 7带动大齿轮轴 8。 大齿轮轴 8—端的小齿轮 25再啮合齿轮摇块 12。 小皮带轮 7 -大皮带轮 6, 小齿轮 -大齿轮， 小齿轮 25 -齿轮摇块 12之间 的传动比经过优化分配， 使整体的传动装置体积最小化。 三个传动轴安装 在同一个斜面上减小了体积同时安装方便。 如图 1、 图 3及图 4所示， 气缸 45悬挂在支架 21上。 气缸被活塞 44 拉动产生真空。气缸端部连接有输出管 47 ,输出管连到机壳的输出接头 14。 活塞 44挂在摇块齿轮摇轴 46上。 直流电机往复的正反转带动活塞推拉气 缸产生真空并经管路输出。
如图 1、 图 3所示， 在轴承座 49和齿轮摇块 12之间装有两个光电感应 器 26, 齿轮摇块 12上设有两个相应的伸出的远近点感应薄片 10。 当气缸 回程到近点时， 齿轮摇块 12转动使一远近点感应薄片 10插入到一个感应 器 26, 触发控制电路正转直流电机 11。 当气缸去程到远点时， 齿轮摇块 12 使另一远近点感应薄片 10插入到另一个感应器 26 ,触发控制电路反转直流 电机 11 , 由此控制气缸的近远程。
如图 1、 图 4所示， 在电机轴上装有小皮带轮 2, 小皮带轮 2上固定有 一行程感应轮 1 , 在行程感应轮 1上开有两个感应缺口 3; 在电机盖上装有 光电感应器 4。 感应轮 1在感应器两极间旋转， 当感应缺口 3转到感应器位 置时， 控制电路将触发计数模块。 每次触发对应 1/2电机转动圈数。 由控制 直流电机转动的总圈数， 可以控制气缸的行程， 由此控制真空度的输出大 小。 直流电机圈数的调节是通过行程调节钮 34输入的电位器位置实现的。 控制电路读取电位器输出电压对应直流电机的连续转动圈数。 行程感应轮 上开 2个感应缺口提高了行程的控制精度， 用户感觉不出级间跳跃。 在直 流电机轴上装感应器比其他位置如气缸行程处有更高的精度， 同时占用最 小的空间
如图 1所示， 气缸头上另一个接头输出 50经小管连接到节流阀 23上。 节流阀 23由阀身 51、 阀芯 52及吸力调节螺丝 56构成。 阀身 51和阀芯 52 通过圓锥面结合， 阀身 51上设有输入孔 54和输出孔 55。 通气流量是通过 调节阀身 51和阀芯 52锥面的开合度来实现的。 阀身安装在支架 21上， 阀 芯通过吸力调节螺丝 56连接到后壳 20外， 如图 5。 连接到气缸 45的节流 阀 23帮助调整吸奶器的整体吸力， 提供行程调节外的另一个吸力调节点。 这在适应用户的习惯上非常有用。 因为用户可能有不同的行程、 吸力组合 爱好。 当节流阀 23拧紧时， 气缸 45输出在设置行程下的最大吸力。 松开 节流阀 23 , 由于旁通的气路吸力会减小， 幅度与节流阀 23的开度对应。
如图 1、 图 2及图 3所示， 在机身前壳 19上设有速度调节旋钮 35 , 行 程调节旋钮 34。速度调节按钮 35调节气缸抽吸的速度， 抽吸速度控制吸奶 的效率， 也适应不同的使用习惯。 控制电路感应电位器的输出电压来对应 输出到直流电机的电压， 因此调节转速。 行程调节按钮 34功能如上所述。
如图 6所示，在机身前壳 19上还设有快吮催奶按钮 33 ,当按钮按下时， 气缸瞬时进入高频短行程抽吸状态， 在数秒后恢复设定的速度和吸力。 此 功能模拟婴儿两阶段吸奶过程。 在第一阶段， 婴儿会快速吸吮奶头刺激出 奶。 在数秒后转为长而有力的深吸， 即进入第二阶段。 此设计让妈妈在任 何需要催奶时按下按键进入催奶模拟。 当持续按下时， 催奶模拟可以延续 任意长的时间。
如图 1所示， 轴承座 49与齿轮摇块 12间有緩冲扭簧 15。扭簧 15套在 摇块转心轴 18上， 且一边扣在轴承座的突出块上， 另一边扣在摇块突出块 17上。 齿轮摇块 12推动气缸回程时， 扭簧 15被压缩起緩冲作用。 应用弹 簧緩冲有效地减小了气缸回程的突然加速震动和噪音， 使气缸的去回程都 有负载从而速度接近， 运行更平稳。 压缩的气缸弹簧在去程是还有助推作 用帮助减小直流电机最大功率。
如图 1、 图 2及图 3所示， 装置机身为立式设计。 立式设计有效减小桌 面占用。 在机身上有两个凹入机身的半圓面状瓶身位 37 , 用以承入部分奶 瓶体 58和瓶托 36。 瓶托 36靠内面有安装脚 59和定位柱 60、 61 , 定位柱 插入机体底座安装孔 28、 31。 在安装脚 59上设有定位圓孔 62 , 且前部带 有斜面。在机体内底座 18上装有定位弹珠槽 30, 安装脚 59在插入后定位。 奶瓶托 36拉出时定位弹珠槽 30内的弹珠会弹起，因此瓶托 36为可拆卸型。 户外携带时拆下瓶托 36有效减少机体的打包体积。在使用时拆下的瓶托 36 可随奶瓶 58任意摆放以稳定奶瓶。
本机构控制方案釆集调压调速式对直流电机进行控制。 两路电位器输 入分别是对直流电机速度与活塞行程进行调节， 主控 MCU通过内部自带 AD釆集。 PWM驱动电路， 主要功能是调节直流电机速度， 本电路中釆用 大功率场效应管。 直流电机驱动电路釆用大功率达林顿管组成 H桥电路， 由于单片机驱动有限， 和减少直流电机产生的干扰对单片机的影响， 加入 驱动达林顿管。
在本方案中釆用调压调速， 主要考虑到直流电机功率不大， 电机转动 需要平稳， 减少噪声， PWM虽可实现高效率， 减少功率管发热， 但 PWM 调速， 电机不能运行在平稳状态， 电机噪声也会增大， 所以釆用调压调速 方案。
三路红外对管输入， 功能分别为远程红外对管、 近程红外对管、 直流 电机计数红外对管。 三路红外对管输出到单片机 10口， 单片机对此 10进 行实时监测。 电源输入由两组， 分别由内置电源与外置电源经可恢复保险 输入到继电器， 并进行控制。 双电源只有一路可以工作， 防止相互干扰。
装置 MCU控制程序中有进程防气缸活塞堵死。在吸力太大时， 电机会 堵转， 活塞会拉不动。 但不间断的大吸力可能对奶头造成损害。 防电机堵 死计时进程在数秒后促使电机回转， 松弛吸力， 从而起到保护作用。
以上所述， 仅为本发明的较佳实施例， 并不用以限制本发明， 凡是依 均应包含在本发明技术方案的保护范围之内。

Claims

权利要求书
1、 一种活塞式吸奶器， 包括一设置在壳体内的活塞式抽吸装置， 其特 征在于： 在壳体内设还设有直流电机、 齿轮减速机构及控制电路板； 活塞 式抽吸装置与一个同齿轮减速机构配合的齿轮摇块连接； 在齿轮摇块与减 速机构间设有远近点感应薄片， 并设置有緩冲扭簧： 在直流电机的轴上设 有行程感应轮， 在机壳外有速度和行程调节旋钮、 快吮催奶按钮及吸力调 节螺丝； 机体为立式设计， 有凹入瓶身位， 瓶托为可拆卸型。
2、 根据权利要求 1所述的活塞式吸奶器， 其特征在于： 所述壳体包括 前壳、 后壳及底座； 速度调节旋钮、 行程调节旋钮及快吮催奶按钮设置在 前壳上并与控制电路板联接； 所述瓶身位为前壳上的两个半圓面， 半圓面 下部配合有用于放置奶瓶的瓶托； 在前壳上还设有通过软管与奶瓶连通的 输出接头； 吸力调节螺丝设在后壳上。
3、 根据权利要求 1或 2所述的活塞式吸奶器， 其特征在于： 所述齿轮 减速机构包括一与底座连接的轴承座， 轴承座开合面为一斜面； 斜面上依 次设有摇块转心轴、 小齿轮轴及大齿轮轴； 摇块转心轴端部配合扇形的齿 轮摇块； 小齿轮轴中部设有齿轮， 端部设有一大皮带轮； 大齿轮轴中部设 有一与小齿轮轴上的齿轮配合的大齿轮， 端部设有一小齿轮， 小齿轮与齿 轮摇块上的齿面配合； 齿轮摇块边端通过一摇轴与活塞式抽吸装置连接； 所述大皮带轮通过皮带及一小皮带轮与直流电机连接。
4、 根据权利要求 1或 2所述的活塞式吸奶器， 其特征在于： 所述活塞 式抽吸装置包括一气缸及与气缸内腔配合的活塞， 在气缸端面设有输出管 及一接头输出口， 输出管与前壳上的输出接头连接； 所述气缸端面铰接在 一个与底座连接的支架上； 在支架上设有一节流阀， 节流阀通过软管与接 头输出口连通。
5、 根据权利要求 1或 2所述的活塞式吸奶器， 其特征在于： 所述瓶托 上设有安装脚和定位柱， 壳体上设有相应的定位弹珠槽和安装孔； 在安装 脚上带有一定位圓孔， 安装脚前部带有斜面。
6、 根据权利要求 3所述的活塞式吸奶器， 其特征在于： 所述緩冲扭簧 套在摇块转心轴上， 緩冲扭簧两受力端分别设于齿轮摇块和轴承座上。
7、 根据权利要求 3所述的活塞式吸奶器， 其特征在于： 所述齿轮摇块 与轴承座之间还设有两个光电感应器， 它们分别与呈凸起状的远近点感应 薄片对应。
8、 根据权利要求 3所述的活塞式吸奶器， 其特征在于： 所述行程感应 轮与小皮带轮连接， 行程感应轮上开有两个感应缺口； 在行程感应轮外部 设有与之对应的光电感应器。
9、 根据权利要求 4所述的活塞式吸奶器， 其特征在于： 所述节流阀由 阀身、 阀芯、 及吸力调节螺丝构成， 阀芯一端带有圓锥面另一端带有外螺 紋， 阀身设有与阀芯适配的内腔， 在阀身上还设有与内腔联通的输入孔和 输出孔； 阀身安装在支架上， 吸力调节螺丝与阀芯连接且延伸到后壳的外 部； 输入孔通过软管与接头输出口连通。
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