WO2023072001A1 - 充排气式气泵以及具有该气泵的电子血压计 - Google Patents

充排气式气泵以及具有该气泵的电子血压计 Download PDF

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Publication number
WO2023072001A1
WO2023072001A1 PCT/CN2022/127102 CN2022127102W WO2023072001A1 WO 2023072001 A1 WO2023072001 A1 WO 2023072001A1 CN 2022127102 W CN2022127102 W CN 2022127102W WO 2023072001 A1 WO2023072001 A1 WO 2023072001A1
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WIPO (PCT)
Prior art keywords
driving
exhaust
air pump
driving part
inflation
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Application number
PCT/CN2022/127102
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English (en)
French (fr)
Inventor
杨海斌
Original Assignee
东莞市黄江瑞铭电子厂
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Filing date
Publication date
Application filed by 东莞市黄江瑞铭电子厂 filed Critical 东莞市黄江瑞铭电子厂
Priority to CN202290000176.5U priority Critical patent/CN221373868U/zh
Publication of WO2023072001A1 publication Critical patent/WO2023072001A1/zh

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    • 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
    • F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
    • F04B45/06—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having tubular flexible members
    • F04B45/067—Pumps having electric drive
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
    • A61B5/021—Measuring pressure in heart or blood vessels
    • A61B5/022—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers
    • 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
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00

Definitions

  • the present application relates to the technical field of pumps, in particular to an inflatable-discharge air pump and an electronic sphygmomanometer with the air pump.
  • the micro air pump is a pump with reduced volume, and the micro air pump is widely used in technical fields such as medical equipment.
  • the micro air pump is a necessary component of the electronic sphygmomanometer.
  • electronic sphygmomanometer plays an important role in preventing diseases such as cerebral hemorrhage caused by high blood pressure.
  • the electronic sphygmomanometer generally includes: a micro air pump, a pressure relief valve connected to the micro air pump, a pressure sensor connected to the micro air pump, a measuring cuff and other main components.
  • the miniature air pump of the electronic sphygmomanometer only has the function of inflating, but not the function of exhausting.
  • the present application provides an inflatable-exhaust air pump and an electronic sphygmomanometer including the air pump.
  • the purpose of this application is to provide an inflatable-exhaust air pump and an electronic sphygmomanometer including the air pump.
  • an air pump for charging and exhausting which includes a motor, a cylinder connected to the motor, a connecting rod mechanism and an air delivery device installed in the cylinder.
  • the air supply device includes an inflation mechanism and an exhaust mechanism.
  • the motor drives the link mechanism through the driving part to drive the inflation mechanism or the exhaust mechanism.
  • the air delivery device of the inflation-exhaust air pump of the present application includes an inflation mechanism and an exhaust mechanism.
  • the driving member has a first driving part and a second driving part, and the second driving part is higher than the first driving part.
  • the driving member defines a driving groove, and the first driving part and the second driving part are arranged in the driving groove.
  • the bottom surface of the driving groove is an inclined surface, and the first driving part and the second driving part are transitionally connected through the inclined surface.
  • the driving member defines a driving groove, and a driving rib is arranged in the driving groove, and the two side walls of the driving rib respectively form a first driving part and a second driving part.
  • the exhaust mechanism includes a seal seat arranged at the exhaust port.
  • the seal seat opens the exhaust port to realize the exhaust process;
  • the second drive part drives the linkage mechanism,
  • the sealing seat moves up to seal the exhaust port, and at the same time, the connecting rod mechanism drives the air supply mechanism to realize the inflation process.
  • the sealing seat is provided with an elastic member which constantly makes the sealing seat open the exhaust port.
  • the sealing seat protrudes upwards out of the fixing column, and the elastic member is sheathed on the fixing column.
  • the exhaust mechanism includes a push rod and a seal seat arranged at the exhaust port.
  • the seal seat is provided with an elastic member that makes the seal seat seal the exhaust port.
  • the connecting rod mechanism drives the air supply mechanism to realize the inflation process;
  • the connecting rod mechanism drives the push rod to overcome the elastic force of the elastic member, pushes the sealing seat to open the exhaust port to realize the exhaust gas process.
  • the present application also provides an electronic sphygmomanometer comprising the above-mentioned inflation-exhaust air pump.
  • Fig. 1 is a perspective view of an embodiment of the inflation-exhaust air pump of the present application.
  • Fig. 2 is an exploded view of the inflation-exhaust air pump shown in Fig. 1 .
  • Fig. 3 is an exploded view from another angle of the air pump shown in Fig. 1 .
  • FIG. 4 is a cross-sectional view of the air pump shown in FIG. 1 .
  • Fig. 5 is another cross-sectional view of the inflation-exhaust air pump shown in Fig. 1 .
  • Fig. 6 is an exploded view of another embodiment of the inflation-exhaust air pump of the present application.
  • Fig. 7 is an exploded view from another angle of the air pump shown in Fig. 6 .
  • Fig. 8 is a cross-sectional view of the air pump shown in Fig. 6 .
  • Inflatable and exhaust type air pump 100 motor 1; drive shaft 11; cylinder body 2; screw 21; positioning groove 22; threaded hole 23; card protrusion 24; Concave part 313'; connecting shaft 32; air supply device 4; inflatable mechanism 41; capsule body 410; substrate 411; Gap 4132; inflatable groove 414; air inlet 415; air intake valve plate 416; sealing rib 417; first positioning notch 418; cover 430; 434; positioning piece 435; hook 436; fixed seat 440; air intake hole 441; accommodating hole 442; air channel 443; second positioning gap 444; exhaust mechanism 42; exhaust port 421; ; Fixed post 423; Elastic member 424/424'; Push rod 425'; Positioning protrusion 426'; Driver 5;
  • the inflatable-exhaust air pump 100 of this embodiment includes a motor 1 , a cylinder 2 connected to the motor 1 , a linkage mechanism 3 and an air delivery device 4 installed in the cylinder 2 .
  • the air delivery device 4 includes an inflation mechanism 41 and an exhaust mechanism 42 , and the motor 1 drives the link mechanism 3 through the driving member 5 to drive the inflation mechanism 41 or the exhaust mechanism 42 .
  • the upper end of the motor 1 is screwed to the lower end of the cylinder body 2.
  • the upper end of the motor 1 is provided with a threaded hole 23, and the lower end of the cylinder body 2 is fixed with a screw 21.
  • the connection method between the motor and the cylinder body is not limited to screw connection, for example, the motor and the cylinder body may be welded or snap-fitted.
  • the driving member 5 has a first driving part 51 and a second driving part 52 , and the second driving part 52 is higher than the first driving part 51 .
  • the driving shaft 11 of the motor 1 is connected to the driving member 5 , and the connecting rod mechanism 3 is driven by the driving member 5 to drive the inflation mechanism 41 or the exhaust mechanism 42 .
  • the switching abutment between the first driving part 51 and the second driving part 52 is realized while the driving is realized by the driving member 5 .
  • the driver 5 is provided with a drive groove 53, and a drive rib 54 is arranged in the drive groove 53.
  • the two side walls of the drive rib 54 respectively form a first drive portion 51 and a second drive portion 52.
  • the bottom surface of the drive groove 53 is an inclined surface 55.
  • the first driving part 51 and the second driving part 52 are transitionally connected through an inclined surface 55 .
  • the arrangement of the driving member 5 , the first driving portion 51 and the second driving portion 52 is not limited thereto, for example, two driving ribs may be arranged in the driving groove 53 to form the first driving portion and the second driving portion respectively.
  • the inflation mechanism 41 includes a bladder 410 and a cover 430 crimped on the bladder 410 .
  • the capsule body 410 includes a base plate 411 and a cavity 412 with an upward opening that is arranged at intervals on the base plate 411, an air inlet groove 413 and an inflatable groove 414 that communicate with the cavity 412, an air inlet 415 that communicates with the intake groove 413, and an air inlet 415 that is arranged on the The intake valve plate 416 at the intake port 415 .
  • the upper surface of the substrate 411 is concaved to form an air inlet 413
  • the bottom of the air inlet 413 has an air inlet 415
  • the air inlet 416 is covered on the air inlet 415 .
  • a first positioning portion 4131 and an air intake notch 4132 are provided on the surrounding wall of the air intake groove 413 .
  • the upper surface of the substrate 411 is concaved to form an inflatable groove 414
  • the surrounding wall of the cavity 412 has a second positioning portion 4121 and an inflatable portion 4122. wall.
  • the bladder is made of deformable materials such as silica gel or rubber.
  • the upper surface of the substrate 411 has protruding sealing ribs 417 , and the cover body 430 is crimped on the sealing ribs 417 so that the cavity 412 , the air inlet groove 413 and the air filling groove 414 respectively form independent spaces.
  • the cover body 430 includes an inflation column 431 protruding upwards and a first positioning plug 433 and a second positioning plug 434 protruding downwards.
  • the inflation column 431 has an inflation channel 432 communicating with the inflation groove 414 .
  • the first positioning plug 433 is inserted in the air inlet groove 413 and fits with the first positioning part 4131
  • the second positioning plug 434 is inserted in the cavity 412 and fits with the second positioning part 4121 and the inflatable part 4122, thereby connecting Cover 430 and bladder 410
  • the inflation mechanism 41 also includes a fixed seat 440 for fixing the bladder 410, the fixed seat 440 has an air inlet 441 and an accommodating hole 442, the air inlet 441 is opposite to the air inlet valve plate 416, and accommodates The hole 442 is used to accommodate the bladder cavity 412 of the bladder 410 .
  • the exhaust port 421 of the exhaust mechanism 42 is opened at the bottom of the inflatable groove 414 , and the fixing seat 440 is provided with an air channel 443 corresponding to the exhaust port 421 .
  • the exhaust mechanism 42 includes a sealing seat 422 arranged at the air channel 443.
  • the sealing seat 422 protrudes upwards out of the fixed column 423.
  • the fixed column 423 is inserted in the air channel 443.
  • the elastic member 424 is sleeved on the fixed column 423 to make the airtight seal Seat 422 opens air passage 443 .
  • the elastic member 424 is a spring, and the spring is sleeved on the fixing post 423 and pressed between the sealing seat 422 and the air channel 443 of the fixing seat 440 .
  • the elastic member 424 keeps the sealing seat 422 moving down to open the air passage 443 to exhaust; when the motor 1 rotates in the opposite direction, the second driving part 52 abuts and drives
  • the link mechanism is 3
  • the sealing seat 422 moves up to seal the air passage 443, and the link mechanism 3 drives the air delivery mechanism to realize the inflation process:
  • the link mechanism 3 stretches the capsule body 410 downward, and the stretched volume of the capsule cavity 412 increases, and the capsule
  • the air pressure in the cavity 412 decreases, the intake valve plate 416 opens, and the outside air enters the intake slot 413 after entering the intake port 415 from the intake hole 441, and then enters the cavity 412 from the intake gap 4132; Press the capsule body 410, the volume of the capsule cavity 412 is reduced by compression
  • the link mechanism 3 includes a mounting plate 31 and a connecting shaft 32 connected to the mounting plate 31 , and a mounting hole 311 having a mounting notch 312 is opened on the mounting plate 31 .
  • the lower end of the capsule cavity 412 is inserted into the accommodating hole 442 , and is installed in the installation hole 311 on the installation plate 31 from the installation notch 312 .
  • the installation notch 312 is provided to facilitate the installation of the capsule body 410 .
  • there are multiple pockets 412 correspondingly, there are multiple accommodating holes 442, air inlets 441, air inlets 415, air inlet grooves 413, etc., as shown in Figure 2-3, there are three, but It is not limited to this.
  • a locating piece 435 is provided on the peripheral wall of the cover body 430 , and a hook 436 is provided at the end of the locating piece 435 .
  • a locating groove 22 is defined on the outer peripheral wall of the cylinder body 2 , and a locking protrusion 24 is provided inside the locating groove 22 .
  • the base plate 411 of the capsule body 410 and the periphery of the fixing seat 440 are respectively provided with a first positioning notch 418 and a second positioning notch 444 corresponding to the positioning groove 22, and the positioning member 435 is inserted into the positioning notch of the capsule body 410 and the fixing seat 440 so that the card
  • the hook 436 engages with the protrusion 24 to fix the cover 430 , the bladder 410 , the fixing seat 440 and the cylinder 2 .
  • the air inlet 441 communicates with the outside through the gap at the positioning groove 22 .
  • the motor 1 contacts the connecting shaft 32 through the second driving part 52 of the driving member 5, and then drives the link mechanism 3, the link mechanism 3 is at a high position, and the elastic member 424 sleeved on the fixed column 423 is compressed , the top end of the fixing column 423 seals the exhaust port 421, and at the same time, the sealing seat 422 seals the air channel 443, and at the same time makes the multiple pockets 412 stretched or compressed successively.
  • the cavity 412 is stretched, the volume of the cavity 412 increases and the air pressure decreases.
  • the intake valve sheet 416 is opened, and the external air passes through the positioning groove 22, the intake hole 441, the intake port 415, and the intake valve in sequence.
  • the slot 413 enters the cavity 412 from the gap between the air intake notch 4132 and the first positioning plug 433 .
  • the volume of the capsule cavity 412 decreases, the air pressure increases, and the intake valve plate 416 closes.
  • the inflatable part 4122 is separated from the outer peripheral wall of the second positioning plug 434, and the air in the capsule cavity 412
  • the gas enters the inflatable groove 414 from the gap between the inflatable part 4122 and the second positioning plug 434 and enters the inflatable airbag through the inflatable channel 432 to inflate the inflated airbag.
  • the motor 1 reverses, the connecting shaft 32 moves along the slope, the first driving part 51 abuts the connecting shaft 32, the connecting rod mechanism 3 is at a low position, and the elastic member 424 makes the sealing seat 422 and the fixing column 423 move down, so that The gas is discharged from the exhaust port 421 and the air passage 443 through the gas filling channel 432 and the gas charging groove 414 and then through the positioning groove 22 of the cylinder body 2 (that is, the path through which the outside air enters).
  • the exhaust mechanism 42 includes a push rod 425' and a seal seat 422' arranged at the exhaust port 421.
  • a constant seal is arranged on the seal seat 422'.
  • the seat 422 ′ seals the elastic member 424 ′ of the exhaust port 421 .
  • the middle part of the mounting plate 31 has a recess 313', and the bottom of the push rod 425' is accommodated in the recess 313', so as to realize the reliable connection between the linkage mechanism 3 and the push rod 425'.
  • the upper surface of the sealing seat 422' protrudes from the positioning protrusion 426', and the elastic member 424' is a spring, which is sleeved on the positioning protrusion 426' and is crimped between the sealing seat 422' and the top of the gas filling groove 414.
  • the present application also provides an electronic sphygmomanometer including the above-mentioned inflation-exhaust air pump 100 .
  • the inflation column 431 of the air pump 100 is connected with an air bag, a pressure sensor and a slow leak valve (the electronic sphygmomanometer adopting a boost measurement method does not need a slow leak valve), thereby forming an airtight system of the electronic sphygmomanometer.
  • Other structures of the electronic sphygmomanometer are relatively well known and will not be repeated here.
  • the air supply device 4 of the inflatable-exhaust air pump 100 of the present application includes an inflatable mechanism 41 and an exhaust mechanism 42 .
  • the motor 1 respectively drives the linkage mechanism 3 through at least two driving parts so as to drive the inflation mechanism 41 to realize the inflation process or the exhaust mechanism 42 to realize the deflation process. Therefore, the air pump 100 of the present application integrates the exhaust function, and the switching between inflation and exhaust can be realized through the driving member 5 having at least two driving parts, and there is no need to separately set up an exhaust element, with fewer parts and a simple structure.
  • the internal structure of the electronic sphygmomanometer with the inflatable-exhaust air pump 100 can save a lot of space, facilitate the arrangement of other parts of the electronic sphygmomanometer, reduce volume, save space, save materials and costs, and reduce the assembly of exhaust valves.

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Abstract

一种充排气式气泵以及包含该气泵的电子血压计，充排气式气泵包括电机（1）、连接电机（1）的缸体（2）和安装于缸体（2）中的连杆机构（3）和送气装置（4），送气装置（4）包括充气机构（41）和排气机构（42），电机（1）通过驱动件驱动连杆机构（3）从而驱动充气机构（41）或排气机构（42），驱动件上具有至少两个驱动部（51，52），电机（1）通过至少两个驱动部（51，52）分别驱动连杆机构（3）从而驱动充气机构（41）实现充气过程或排气机构（42）实现放气过程。充排气式气泵通过具有至少两个驱动部的驱动件就可以实现充气与排气的切换，无需单独另设排气元件，零件少，结构简单。

Description

充排气式气泵以及具有该气泵的电子血压计 技术领域
本申请涉及泵技术领域，尤其涉及一种充排气式气泵以及具有该气泵的电子血压计。
背景技术
微型气泵是一种体积缩小的泵，微型气泵广泛应用于医疗器械等技术领域。微型气泵是电子血压计的必要组成部件。电子血压计作为测量血压的重要工具，对预防由高血压引起的脑出血等疾病具有重要作用。电子血压计一般包括：微型气泵、与微型气泵相连接的泄压阀及与微型气泵相连接的压力传感器和测量袖带等主要部件。一般电子血压计的微型气泵仅具有充气功能，不具有排气功能，需要另设置泄压阀完成放气过程。由于电子血压计的体积取决于每个组成部件的体积，另设泄压阀会使血压计的零件多、占用空间大、生产成本高、装配复杂，且多个部件一定程度增加了气泵及电子血压计的体积。
为解决上述问题，本申请提供了一种充排气式气泵以及包含该气泵的电子血压计。
申请内容
本申请的目的在于提供一种充排气式气泵以及包含该气泵的电子血压计。
为实现上述目的，本申请提供了一种充排气式气泵，包括电机、连接电机的缸体和安装于缸体中的连杆机构和送气装置。送气装置包括充气机构和排气机构。电机通过驱动件驱动连杆机构从而驱动充气机构或排气机构。驱动件上具有至少两个驱动部，电机通过至少两个驱动部分别驱动连杆机构从而驱动充气机构实现充气过程或排气机构实现放气过程。
与现有技术相比，本申请充排气式气泵的送气装置包括充气机构和排气机构。驱动件上具有至少两个驱动部，电机通过至少两个驱动部分别驱动连杆机构从而驱动充气机构实现充气过程或排气机构实现放气过程。因此，本申请的气泵整合了排气功能，通过具有至少两个驱动部的驱动件就可以实现充气与排气的切换，无需单独另设排气元件，零件少，结构简单。
具体地，驱动件上具有第一驱动部和第二驱动部，第二驱动部高于第一驱动部。
具体地，驱动件开设驱动槽，第一驱动部和第二驱动部设置于驱动槽内。
具体地，驱动槽的底面为一倾斜面，第一驱动部和第二驱动部之间通过倾斜面过渡连接。
具体地，驱动件开设驱动槽，驱动槽内设置驱动肋，驱动肋的两侧壁分别形成第一驱动部和第二驱动部。
具体地，排气机构包括设置于排气口处的密封座，当第一驱动部驱动连杆机构时，密封座打开排气口实现排气过程；当第二驱动部驱动连杆机构时，密封座上移密封排气口，同时连杆机构驱动送气机构实现充气过程。
具体地，密封座上设置有恒使密封座打开排气口的弹性件。
具体地，密封座向上凸伸出固定柱，弹性件套设于固定柱。
具体地，排气机构包括顶推杆和设置于排气口处的密封座，密封座上设置有恒使密封座密封排气口的弹性件，当第一驱动部驱动连杆机构时，密封座密封排气口，同时连杆机构驱动送气机构实现充气过程；当第二驱动部驱动连杆机构时，连杆机构驱动顶推杆克服弹性件的弹力，推开密封座打开排气口实现排气过程。
本申请还提供了一种包含上述充排气式气泵的电子血压计。
附图说明
图1是本申请的充排气式气泵的一实施例的立体图。
图2是图1所示的充排气式气泵的爆炸图。
图3是图1所示的充排气式气泵的另一角度的爆炸图。
图4是图1所示的充排气式气泵的剖视图。
图5是图1所示的充排气式气泵的另一剖视图。
图6是本申请的充排气式气泵的另一实施例的爆炸图。
图7是图6所示的充排气式气泵的另一角度的爆炸图。
图8是图6所示的充排气式气泵的剖视图。
符号说明
充排气式气泵100；电机1；驱动轴11；缸体2；螺钉21；定位槽22；螺纹孔23；卡凸24；连杆机构3；安装板31；安装孔311；安装缺口312；凹部313’；连轴32；送气装置4；充气机构41；囊体410；基板411；囊腔412；第二定位部4121；充气部4122；进气槽413；第一定位部4131；进气缺口4132；充气槽414；进气口415；进气阀片416；密封肋417；第一定位缺口418；盖体430；充气柱431；充气道432；第一定位塞433；第二定位塞434；定位件435；卡钩436；固定座440；进气孔441；容置孔442；通气道443；第二定位缺口444；排气机构42；排气口421；密封座422/422’；固定柱423；弹性件424/424’；顶推杆425’；定位凸426’；驱动件5；第一驱动部51；第二驱动部52；驱动槽53；驱动肋54；倾斜面55
具体实施方式
为了详细说明本申请的技术内容、构造特征，以下结合实施方式并配合附图作进一步说明。
请参阅图1-5，本实施例的充排气式气泵100包括电机1、连接电机1的缸体2和安装于缸体2中的连杆机构3和送气装置4。送气装置4包括充气机构41和排气机构42，电机1通过驱动件5驱动连杆机构3从而驱动充气机构41或排气机构42。驱动件5上具有至少两个驱动部，电机1通过至少两个驱动部分别驱动连杆机构3从而驱动充气机构41实现充气过程或排气机构42实现放 气过程。电机1上端与缸体2下端螺纹连接，具体地，电机1的上端开设有螺纹孔23，缸体2的下端固定有螺钉21。当然，电机与缸体的连接方式不限于螺纹连接，例如，电机和缸体可通过焊接，亦可通过卡合连接的方式。
具体地，驱动件5上具有第一驱动部51和第二驱动部52，第二驱动部52高于第一驱动部51。进一步地，电机1的驱动轴11连接驱动件5，通过驱动件5驱动连杆机构3从而驱动充气机构41或排气机构42。通过驱动件5实现驱动的同时实现第一驱动部51和第二驱动部52的切换抵接。驱动件5开设驱动槽53，驱动槽53内设置驱动肋54，驱动肋54的两侧壁分别形成第一驱动部51和第二驱动部52，驱动槽53的底面为一倾斜面55，第一驱动部51和第二驱动部52之间通过倾斜面55过渡连接。当然，驱动件5、第一驱动部51和第二驱动部52设置方式不限于此，例如亦可以在驱动槽53内设置两个驱动肋分别形成第一驱动部和第二驱动部。
再参考图2-5，充气机构41包括囊体410和压接于囊体410上的盖体430。囊体410包括基板411和间隔设置于基板411上的具有开口向上的囊腔412、分别连通囊腔412的进气槽413和充气槽414、连通进气槽413的进气口415以及设置于进气口415处的进气阀片416。更具体地，基板411上表面下凹形成进气槽413，进气槽413的底部具有进气口415，进气阀片416盖设于进气口415上。进气槽413周壁处具有第一定位部4131和进气缺口4132。进一步的，基板411上表面下凹形成充气槽414，囊腔412周壁处具有第二定位部4121和充气部4122，充气部4122为形成于囊腔412的周壁与充气槽414周壁连接处的薄壁。可以理解的，囊体由硅胶或橡胶等可以形变的材料制成。较佳地，基板411上表面具有凸伸出的密封肋417，盖体430压接于密封肋417使得囊腔412、进气槽413、充气槽414分别形成独立的空间。盖体430包括向上凸伸的充气柱431和向下凸伸形成的第一定位塞433和第二定位塞434。充气柱431具有连通充气槽414的充气道432。具体地，第一定位塞433插设于进气槽413与第一定位部4131贴合，第二定位塞434插设于囊腔412与第二定位部4121和充气部4122贴合，从而连接盖体430和囊体410。较佳地，充气机构41还包括用于固定囊 体410的固定座440，固定座440上具有进气孔441和容置孔442，进气孔441与进气阀片416位置相对，容置孔442用于容纳囊体410的囊腔412。
再参考图2-5，排气机构42的排气口421开设于充气槽414的底部，固定座440上开设有与排气口421对应的通气道443。排气机构42包括设置于通气道443处的密封座422，密封座422向上凸伸出固定柱423，固定柱423插设在通气道443中，弹性件424套设于固定柱423恒使密封座422打开通气道443。在此实施例中，弹性件424为弹簧，弹簧套设于固定柱423上并压接于密封座422和固定座440的通气道443之间。当第一驱动部51抵接并驱动连杆机构3时，弹性件424恒使密封座422下移打开通气道443，排气；当电机1反向旋转，第二驱动部52抵接并驱动连杆机构3时，密封座422上移密封通气道443，同时连杆机构3驱动送气机构实现充气过程：连杆机构3向下拉伸囊体410，囊腔412被拉伸体积增加，囊腔412内气压降低，进气阀片416打开，外界气体从进气孔441进入进气口415后进入进气槽413，然后从进气缺口4132进入囊腔412；当连杆机构3向上挤压囊体410，囊腔412被压缩体积减少，囊腔412内气压增加，进气阀片416关闭进气口415，充气部4122与第二定位塞434周壁分离，囊腔412内的气体从充气部4122进入充气槽414后经充气道432排出，对被充气气囊进行充气。因此，在此实施例中，当排气或放置不用时，连杆机构处于低位，囊腔伸展，囊体压缩小，仅当充气时，压缩囊腔。
连杆机构3包括安装板31和连接安装板31的连轴32，安装板31上开设具有安装缺口312的安装孔311。囊腔412的下端插设于容置孔442中，并从安装缺口312处安装在安装板31上的安装孔311内，安装缺口312的设置方便囊体410的安装。较佳地，囊腔412有多个，相应地，容置孔442、进气孔441、进气口415、进气槽413等亦有多个，如图2-3，有3个，但并不限于此。盖体430周壁上设有定位件435，定位件435尾端具有一卡钩436，缸体2的外周壁上开设定位槽22，定位槽22内凸设有卡凸24。囊体410的基板411和固定座440的周沿分别开设有与定位槽22对应的第一定位缺口418和第二定位缺口444，定位件435插入囊体410和固定座440的定位缺口使得卡钩436与卡凸24卡合， 从而固定盖体430、囊体410、固定座440和缸体2。进气孔441通过定位槽22处的缝隙与外界连通。
因此，当需要送气时，电机1通过驱动件5的第二驱动部52抵接连轴32，进而驱动连杆机构3，连杆机构3处于高位，套在固定柱423上的弹性件424被压缩，固定柱423的顶端封住排气口421，同时，密封座422密封通气道443，同时使得多个囊腔412先后被拉伸或压缩。当囊腔412被拉伸，囊腔412体积增大气压降低，在气流的吹动下，进气阀片416打开，外界气体依次经过定位槽22、进气孔441、进气口415、进气槽413，从进气缺口4132与第一定位塞433之间的缝隙处进入囊腔412。当囊腔412被压缩，囊腔412体积减小，气压增加，进气阀片416关闭，在气流的吹动下，充气部4122与第二定位塞434的外周壁分离，囊腔412内的气体从充气部4122与第二定位塞434之间的缝隙处进入充气槽414后经充气道432进入充气气囊，对被充气气囊进行充气。当需要排气时，电机1反转，连轴32沿斜面移动，第一驱动部51抵接连轴32，连杆机构3处于低位，弹性件424使得密封座422和固定柱423下移，使得气体经过充气道432和充气槽414从排气口421和通气道443进而经过缸体2的定位槽22排出(即外界气体进入的通路)排出。
图6-8为充排气式气泵100的另一个实施例，排气机构42包括顶推杆425’和设置于排气口421处的密封座422’，密封座422’上设置有恒使密封座422’密封排气口421的弹性件424’。进一步地，安装板31的中部具有一凹部313’，顶推杆425’的底部容置于凹部313’中，实现连杆机构3与顶推杆425’的可靠连接。密封座422’的上表面凸伸出定位凸426’，弹性件424’为弹簧，弹簧套设于定位凸426’上并压接于密封座422’和充气槽414的顶部之间。当第一驱动部51抵接连杆机构3的连轴32，连杆机构3处于低位，弹性件424’恒使密封座422’密封排气口421，同时电机1驱动连杆机构3从而驱动囊腔412被拉伸或压缩实现充气过程；当电机1反向旋转，第二驱动部52抵接连杆机构3的连轴32时，连杆机构3处于高位，电机1驱动连杆机构3从而驱动顶推杆425’克服弹性件424’的弹力，推开密封座422’实现排气。本实施例中，除上述结构外，其他结构均 与上一实施例相同，在此不再赘述。
本申请还提供了一种包括上述充排气式气泵100的电子血压计。具体地，气泵100的充气柱431连接气袋、压力传感器和慢速漏气阀(采用升压式测量方式的电子血压计无需慢速漏气阀)，从而构成电子血压计的气密系统。电子血压计的其他结构较为公知，在此将不再赘述。
综上，本申请充排气式气泵100的送气装置4包括充气机构41和排气机构42。驱动件5上具有至少两个驱动部，电机1通过至少两个驱动部分别驱动连杆机构3从而驱动充气机构41实现充气过程或排气机构42实现放气过程。因此，本申请的气泵100整合了排气功能，通过具有至少两个驱动部的驱动件5就可以实现充气与排气的切换，无需单独另设排气元件，零件少，结构简单。具有该充排气式气泵100的电子血压计内部结构中可以节省大量空间，方便电子血压计其他零件的布置，能够减小体积、节省空间、节省材料和成本，减少排气阀的装配等。
以上所揭露的仅为本申请的较佳实例而已，不能以此来限定本申请之权利范围，因此依本申请权利要求所作的等同变化，均属于本申请所涵盖的范围。

Claims (10)

  1. 一种充排气式气泵，其特征在于，包括电机、连接所述电机的缸体和安装于所述缸体中的连杆机构和送气装置，所述送气装置包括充气机构和排气机构，所述电机通过驱动件驱动所述连杆机构从而驱动所述充气机构或排气机构，所述驱动件上具有至少两个驱动部，所述电机通过所述至少两个驱动部分别驱动所述连杆机构从而驱动所述充气机构实现充气过程或所述排气机构实现放气过程。
  2. 根据权利要求1所述的充排气式气泵，其特征在于，所述驱动件上具有第一驱动部和第二驱动部，所述第二驱动部高于所述第一驱动部。
  3. 根据权利要求2所述的充排气式气泵，其特征在于，所述驱动件开设驱动槽，所述第一驱动部和第二驱动部设置于所述驱动槽内。
  4. 根据权利要求3所述的充排气式气泵，其特征在于，所述驱动槽的底面为一倾斜面，所述第一驱动部和第二驱动部之间通过所述倾斜面过渡连接。
  5. 根据权利要求2所述的充排气式气泵，其特征在于，所述驱动件开设驱动槽，所述驱动槽内设置驱动肋，所述驱动肋的两侧壁分别形成所述第一驱动部和第二驱动部。
  6. 根据权利要求1-5所述的充排气式气泵，其特征在于，所述排气机构包括设置于排气口处的密封座，当所述第一驱动部驱动所述连杆机构时，所述密封座打开所述排气口实现排气过程；当所述第二驱动部驱动所述连杆机构时，所述密封座上移密封所述排气口，同时所述连杆机构驱动所述送气机构实现充气过程。
  7. 根据权利要求6所述的充排气式气泵，其特征在于，所述密封座上设置有恒使所述密封座打开所述排气口的弹性件。
  8. 根据权利要求7所述的充排气式气泵，其特征在于，所述密封座向上凸伸出固定柱，所述弹性件套设于所述固定柱。
  9. 根据权利要求1-5所述的充排气式气泵，其特征在于，所述排气机构包括顶推杆和设置于排气口处的密封座，所述密封座上设置有恒使所述密封座密封所述排气口的弹性件，当所述第一驱动部驱动所述连杆机构时，所述密封座密封所述排气口，同时所述连杆机构驱动所述送气机构实现充气过程；当所述第二驱动部驱动所述连杆机构时，所述连杆机构驱动所述顶推杆克服所述弹性件的弹力，推开所述密封座打开所述排气口实现排气过程。
  10. 一种电子血压计，其特征在于，包括权利要求1-9任一项所述的充排气式气泵。
PCT/CN2022/127102 2021-10-25 2022-10-24 充排气式气泵以及具有该气泵的电子血压计 WO2023072001A1 (zh)

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