US20160084243A1 - Crankshaft-type vacuum air pump and glass-wiping apparatus thereof - Google Patents

Crankshaft-type vacuum air pump and glass-wiping apparatus thereof Download PDF

Info

Publication number
US20160084243A1
US20160084243A1 US14/773,107 US201414773107A US2016084243A1 US 20160084243 A1 US20160084243 A1 US 20160084243A1 US 201414773107 A US201414773107 A US 201414773107A US 2016084243 A1 US2016084243 A1 US 2016084243A1
Authority
US
United States
Prior art keywords
crankshaft
air pump
units
eccentric wheel
disk
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.)
Abandoned
Application number
US14/773,107
Other languages
English (en)
Inventor
Yongbing Feng
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SUZHOU ECOVACS COMMERCIAL ROBOT Co Ltd
Original Assignee
SUZHOU ECOVACS COMMERCIAL ROBOT Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SUZHOU ECOVACS COMMERCIAL ROBOT Co Ltd filed Critical SUZHOU ECOVACS COMMERCIAL ROBOT Co Ltd
Assigned to SUZHOU ECOVACS COMMERCIAL ROBOT CO., LTD. reassignment SUZHOU ECOVACS COMMERCIAL ROBOT CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FENG, Yongbing
Publication of US20160084243A1 publication Critical patent/US20160084243A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • 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
    • F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
    • F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
    • F04B37/14—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high vacuum
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L1/00—Cleaning windows
    • A47L1/02—Power-driven machines or devices
    • 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
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/01—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being mechanical
    • 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
    • F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
    • F04B37/02—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for evacuating by absorption or adsorption
    • 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
    • F04B39/0094—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 crankshaft

Definitions

  • the present invention relates to a crankshaft-type vacuum air pump and glass-wiping apparatus thereof, and belongs to the field of machinery manufacture.
  • FIG. 1 shows a schematic view of the overall structure of the conventional eccentric wheel-type vacuum air pump.
  • the conventional vacuum air pump employs an eccentric wheel 200 mounted on the output shaft 110 of the motor 100 to drive a piston rods 300 of the air pump to reciprocate, in order to proceed the vacuum operation.
  • FIG. 2 shows a schematic view of the relationship between the distance from the center of gravity to the rotary shaft and the rotation angle in the conventional vacuum air pump. As shown in FIG. 2 , when the rotation angle is 0°, the distance is 0; with the rotation angle changes, the distance also increases, and when the rotation angle is 90°, the distance reaches its maximum value of 0.55 mm; when the rotation angle changes from 90° to 180°, the distance gradually decreases again.
  • FIGS. 3 and 4 respectively shows the force analysis diagram of the radial force X or Y of the eccentric wheel in the conventional eccentric wheel-type vacuum air pump.
  • the centrifugal force generated by the rotation of the eccentric wheel and the force applied by the piston rod render the rotary shaft being subjected to a radial force in X direction along the piston rod and a radial force in Y direction perpendicular to the piston rod, each of which changing with the rotation angle.
  • the radial force X ranges from ⁇ 2.00e-06N (min. value) to 1.625e-06N (max. value); while as shown in FIG. 4 , as the rotation angle varies, the radial force Y ranges from ⁇ 0.9N (min. value) to 0.9N (max. value). Since the difference between the alternating forces is large, the vacuum pump is suffered from serious vibration. As shown in FIG. 1 , for the purpose of reducing the vibration, the current practice is to add a counterweight block 400 on the eccentric wheel, so as to balance the center of gravity, but the effect is still far from satisfactory.
  • crank shaft type vacuum air pump which is structurally simple and compact, crankshaft units are made to serve as a rotary shaft, since each crankshaft therein per se is centrosymmetric, the overall center of gravity during rotation is always located at the center of rotation and no vibration is caused by a centrifugal force.
  • the rotary shaft is subjected to the force of piston rods on two sides that are always symmetric relative to the center of rotation, thus the rotary shaft is subjected to a radial force that is basically zero, the problem of vibration caused by unbalanced stress during rotation is greatly reduced, and a stable working state is allowed.
  • the number of the crankshaft units mounted can be adjusted to achieve the most suitable amount and volume of air.
  • a crankshaft-type vacuum air pump comprising a drive motor, an air pump main body, and piston air pump components arranged on the air pump main body, a crankshaft unit is arranged within the air pump main body, the top of the crankshaft unit is connected to the air pump main body via an upper eccentric wheel, while the end is connected to the drive motor via a lower eccentric wheel, the drive motor outputs power to rotate the crankshaft unit, the crankshaft unit is connected to the piston air pump components and drives the piston air pump components into motion, thus completing air intake and air discharge of each piston air pump component.
  • the crankshaft unit comprises a crankshaft, an upper piston rod and a lower piston rod are respectively sheathed on the upper side and the lower side of the crankshaft, the lower piston rod and the upper piston rod are respectively connected to the piston air pump components arranged on the different sides of the air pump main body.
  • the crankshaft comprises a crankshaft main body and two shaft portions, each of which respectively extends upward and downward from the left end and the right end of the crankshaft main body, the shaft portion of the crankshaft comprises a piston rods connection part on which the piston rods are sheathed via a bearing, and an eccentric wheel connection part which inserts into an eccentric hole of the eccentric wheel and is fixed therein.
  • crankshaft is centrosymmetric in order to ensure that the crankshaft is always in force equilibrium and the vibration is reduced.
  • the upper eccentric wheel and the lower eccentric wheel are structurally the same, which respectively comprises a wheel disk, a wheel shaft is projected out from one side of the wheel disk, and an eccentric hole is provided on the other side; besides the upper eccentric wheel and the lower eccentric wheel are symmetrically arranged with respect to the crankshaft unit.
  • crankshaft units are installed, wherein two adjacent crankshaft units are connected by a connection disk, which comprises a disk body and two connection seats respectively provided on the upper/lower surface of the disk body, which respectively connects to different crankshafts in two neighbouring crankshaft units.
  • a connection disk which comprises a disk body and two connection seats respectively provided on the upper/lower surface of the disk body, which respectively connects to different crankshafts in two neighbouring crankshaft units.
  • crankshaft units usually, two or three of the crankshaft units are employed.
  • the present invention also provides a glass-wiping apparatus, comprising a sucking unit and a walking unit, the glass-wiping apparatus is sucked on the surface of the glass via the sucking unit, wherein the sucking unit comprises a sucker and a vacuum air pump, the vacuum air pump provides vacuum sucking force to the sucker, and wherein the vacuum air pump employs the above mentioned crankshaft type vacuum air pump.
  • the present invention provides a crankshaft type vacuum air pump, which is structurally simple and compact, as each crankshaft therein per se is centrosymmetric, the overall center of gravity during rotation is always located at the center of rotation and no vibration is caused by a centrifugal force.
  • the rotary shaft is subjected to the force of piston rods on two sides that are always symmetric relative to the center of rotation, thus the rotary shaft is subjected to a radial force that is basically zero, the problem of vibration caused by unbalanced stress during rotation is greatly reduced, and stable working state is allowed.
  • the crankshaft unit comprises a crankshaft main body and two shaft portions, the piston rods can be easily sheathed on the piston rods connection parts, the assembly time of the vacuum air pump is greatly reduced.
  • FIG. 1 shows a schematic view of the overall structure of the conventional eccentric wheel-type vacuum air pump.
  • FIG. 2 shows a schematic view of the relationship between the distance from the center of gravity to the rotary shaft and the rotation angle in the conventional vacuum air pump.
  • FIGS. 3 and 4 respectively shows the force analysis diagram of the radial force X or Y of the eccentric wheel in the conventional eccentric wheel-type vacuum air pump.
  • FIG. 5 shows a schematic view of the overall structure of Example 1 of the present invention.
  • FIG. 6 shows a schematic view of the relationship between the distance from the center of gravity to the rotary shaft and the rotation angle in Example 1 of the present invention.
  • FIGS. 7 and 8 respectively shows the force analysis diagram of the radial force X or Y of the crankshaft in Example 1 of the present invention.
  • FIG. 9 shows a prospective view of the assembly of the crankshaft unit of Example 2 of the present invention.
  • FIG. 10 shows a sectional view of the crankshaft unit of Example 2 of the present invention.
  • FIG. 5 shows a schematic view of the overall structure of Example 1 of the present invention.
  • the present invention provides a crankshaft-type vacuum air pump comprising a drive motor 1 , an air pump main body 2 , and piston air pump components 3 arranged within the air pump main body 2 , a crankshaft unit is arranged on the air pump main body 2 to rotate the air pump main body, the center line of the output shaft of the driver motor 1 is coincide with the center of rotation of the crankshaft unit.
  • crankshaft unit The top of the crankshaft unit is connected to the air pump main body 2 via an upper eccentric wheel 4 , while the end is connected to the drive motor 1 via a lower eccentric wheel 5 , the drive motor 1 outputs power to the crankshaft unit, the crankshaft unit is connected to the piston air pump components 3 and drives the piston air pump components into motion, thus completing air intake and air discharge of the piston air pump components 3 .
  • the crankshaft unit comprises a crankshaft 7 , an upper piston rod 8 and a lower piston rod 9 are respectively sheathed on the upper side and the lower side of the crankshaft 7 , the lower piston rod 9 and the upper piston rod 8 are respectively connected to the piston air pump components 3 arranged on the different sides of the air pump main body 2 .
  • the crankshaft 7 comprises a crankshaft main body 71 and two shaft portions, which respectively extends upward and downward from the left end and the right end of the crankshaft main body 71 , the shaft portion of the crankshaft 7 comprises a piston rods connection part 72 on which the piston rods are sheathed via a bearing, and an eccentric wheel connection part 73 which inserts into an eccentric hole of the eccentric wheel 4 and is fixed therein.
  • the wheel shaft of the lower eccentric wheel 5 is fixed in connection with the rotary shaft of the motor, while the wheel shaft of the upper eccentric wheel 4 is connected to the air pump main body 2 via a bearing.
  • the crankshaft is centrosymmetric in order to ensure that the crankshaft is always in force equilibrium and the vibration is reduced.
  • the upper eccentric wheel 4 and the lower eccentric wheel 5 are structurally the same, which respectively comprises a wheel disk 10 , and a wheel shaft 11 is projected out from one side of the wheel disk 10 , and an eccentric hole 12 is provided on the other side; the upper eccentric wheel 4 and the lower eccentric wheel 5 are symmetrically arranged with respect to the crankshaft unit.
  • the operating process of the crankshaft type vacuum air pump according to the present invention is: as the drive motor 1 starts running, when the motor rotates, the crankshaft 7 as well as the up/lower eccentric wheels 4 and 5 rotate synchronously, thus drive the upper piston rod 8 and the lower piston rod 9 into reciprocating motion, thus the piston air pump components 3 at the both ends operate in the air intake and air discharge synchronously, so as to continuously vacuum the suckers in connection with the piston air pump components 3 .
  • FIG. 6 shows a schematic view of the relationship between the distance from the center of gravity to the rotary shaft and the rotation angle in Example 1 of the present invention.
  • FIGS. 7 and 8 respectively shows the force analysis diagram of the radial force X or Y of the crankshaft in Example 1 of the present invention.
  • the radial force X ranges from ⁇ 1.75e-09N (min. force) to 1.75e-09N (max. force); while as shown in FIG.
  • the crankshaft of the invention per se is centrosymmetric, thus the employment of the crankshaft-type vacuum air pump renders that the overall center of gravity during rotation is always located at the center of rotation and no vibration is caused by a centrifugal force.
  • the rotary shaft is subjected to the force of piston rods on two sides that are always symmetric relative to the center of rotation, thus the rotary shaft is subjected to a radial force that is basically zero, therefore the problem of vibration caused by unbalanced stress during rotation is reduced;
  • the crankshaft unit comprises a crankshaft main body and two shaft portions, the piston rods can be easily sheathed on the piston rods connection parts, the assembly time of the vacuum air pump is greatly reduced.
  • FIG. 9 shows a prospective view of the assembly of the crankshaft unit of Example 2 of the present invention
  • FIG. 10 shows a sectional view of the crankshaft unit of Example 2 of the present invention.
  • a connection disk 6 which comprises a disk body 61 and two connection seats 62 respectively provided on the upper/lower surface of the disk body, the two connection seats 62 respectively connect to different crankshafts in two neighbouring crankshaft units.
  • two or three of the crankshaft units are employed.
  • Example 2 The difference between the present Example 2 and Example 1 lies only in that, the numbers of the crankshaft units installed in the crankshaft type vacuum air pump are different, and other technical features in the present Example are basically the same as those employed in Example 1, which are not repeated herein.
  • the present invention also provides a glass-wiping apparatus, comprising a sucking unit and a walking unit, and the glass-wiping apparatus is sucked on the surface of the glass via the sucking unit, wherein the sucking unit comprises a sucker and a vacuum air pump, which provides vacuum sucking force to the sucker, and wherein the vacuum air pump employs the crankshaft type vacuum air pump according to the above Example 1 or Example 2.
  • the crankshaft type vacuum air pump according to the present invention employs a configuration similar to the crankshaft of automobile engine, and can be made of two connecting rods, four connecting rods or more.
  • the crankshaft according to the present invention employ a sectional installation type, thus makes a convenient installation, moreover the crankshaft maintains a force equilibrium during operation, reducing the vibration caused by the force dis-equilibrium; and the overall center of gravity of the air pump coincides with the rotary shaft, thus reduces the vibration caused by the inertial force.
  • the present invention employs the crankshaft structure, canceling the clump weight of the prior art, thus is structurally simple and compact, as each crankshaft therein per se is centrosymmetric, the overall center of gravity during rotation is always located at the center of rotation and no vibration is caused by a centrifugal force.
  • the rotary shaft is subjected to the force of piston rods on two sides that are always symmetric relative to the center of rotation, thus the rotary shaft is subjected to a radial force that is basically zero, the problem of vibration caused by unbalanced stress during rotation is greatly reduced, and a stable working state is allowed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
US14/773,107 2013-03-06 2014-03-06 Crankshaft-type vacuum air pump and glass-wiping apparatus thereof Abandoned US20160084243A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN201310071461.3 2013-03-06
CN201310071461.3A CN104033356B (zh) 2013-03-06 2013-03-06 曲轴式真空气泵及其擦玻璃装置
PCT/CN2014/072976 WO2014135099A1 (zh) 2013-03-06 2014-03-06 曲轴式真空气泵及其擦玻璃装置

Publications (1)

Publication Number Publication Date
US20160084243A1 true US20160084243A1 (en) 2016-03-24

Family

ID=51464289

Family Applications (1)

Application Number Title Priority Date Filing Date
US14/773,107 Abandoned US20160084243A1 (en) 2013-03-06 2014-03-06 Crankshaft-type vacuum air pump and glass-wiping apparatus thereof

Country Status (4)

Country Link
US (1) US20160084243A1 (zh)
EP (1) EP2966302A1 (zh)
CN (1) CN104033356B (zh)
WO (1) WO2014135099A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9709049B2 (en) * 2014-10-23 2017-07-18 Shinano Kenshi Co., Ltd. Piston drive device
CN113729545A (zh) * 2017-12-26 2021-12-03 科沃斯机器人股份有限公司 一种机器人控制方法、存储介质和机器人

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104279267B (zh) * 2014-09-22 2016-06-29 广西玉柴机器股份有限公司 曲轴平衡重
CN108343582A (zh) * 2017-11-11 2018-07-31 罗文青 一种四缸水平对置风冷真空泵
CN112283071B (zh) * 2020-10-13 2022-03-01 江西闪石压缩机节能科技有限公司 一种直线往复活塞式压缩机

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1715489A (en) * 1925-07-06 1929-06-04 Baer Alfred Crank shaft
US8375919B2 (en) * 2007-01-05 2013-02-19 Efficient-V, Inc. Motion translation mechanism

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040113369A1 (en) * 2002-12-16 2004-06-17 Wright Kenneth A. Lip seal wear sleeve
CN1456809A (zh) * 2003-01-15 2003-11-19 侯亮 全平衡无振动微型无油润滑压缩机
JP2006009636A (ja) * 2004-06-24 2006-01-12 Sakushiyon Gas Kikan Seisakusho:Kk 多気筒往復圧縮機
CN101761618B (zh) * 2009-10-16 2012-07-04 北京中清能发动机技术有限公司 往复运动和旋转运动相互转换的机构及其部件、设备
CN202376015U (zh) * 2011-11-15 2012-08-15 王靖瑜 智能擦玻璃机器人
CN102777343B (zh) * 2012-06-20 2015-03-04 杭州海胜制冷设备有限公司 单驱动多缸压缩机结构
CN203130412U (zh) * 2013-03-06 2013-08-14 科沃斯机器人科技(苏州)有限公司 曲轴式真空气泵及其擦玻璃装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1715489A (en) * 1925-07-06 1929-06-04 Baer Alfred Crank shaft
US8375919B2 (en) * 2007-01-05 2013-02-19 Efficient-V, Inc. Motion translation mechanism

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9709049B2 (en) * 2014-10-23 2017-07-18 Shinano Kenshi Co., Ltd. Piston drive device
CN113729545A (zh) * 2017-12-26 2021-12-03 科沃斯机器人股份有限公司 一种机器人控制方法、存储介质和机器人
US12016502B2 (en) 2017-12-26 2024-06-25 Ecovacs Robotics Co., Ltd. Control method of cleaning robot

Also Published As

Publication number Publication date
CN104033356B (zh) 2017-09-12
WO2014135099A1 (zh) 2014-09-12
CN104033356A (zh) 2014-09-10
EP2966302A1 (en) 2016-01-13

Similar Documents

Publication Publication Date Title
US20160084243A1 (en) Crankshaft-type vacuum air pump and glass-wiping apparatus thereof
CN1906413B (zh) 往复式压缩机
EP2944815B1 (en) Air compressor of weight-reduction type
JP6573605B2 (ja) 遊星回転機構を有するスピン・ポンプ
CN101906953B (zh) 直立式长环齿条抽油机
CN101672258A (zh) 齿轮连杆式直线往复运动机构
CN102094826A (zh) 一种涡旋压缩机的平面十字联轴节
CN201991728U (zh) 一种制冷式压缩机曲轴的配重平衡结构
CN203130412U (zh) 曲轴式真空气泵及其擦玻璃装置
CN201502677U (zh) 齿轮连杆式直线往复运动机构
CN203560100U (zh) 旋转式压缩机和具有该旋转式压缩机的空调设备
CN205578272U (zh) 涡旋压缩机的机壳结构
CN103727196B (zh) 完全平衡型曲轴传动装置及其压缩机
CN103527482B (zh) 旋转式压缩机
CN101876310A (zh) 一种线性压缩机用供油装置
CN100344877C (zh) 二重容量的压缩机锁机械部
JP2019019701A (ja) 圧縮機
US20060180019A1 (en) Piston balancing system
JP2011247099A (ja) 電動機一体型ブースター圧縮機
CN207893048U (zh) 平衡轴及具有该平衡轴的发动机
CN210660477U (zh) 一种无油空气压缩泵偏心器与电机转轴的固定结构
CN108443097A (zh) 一种双气缸同轴线对称设置微型活塞泵
KR101272950B1 (ko) 가변 용량형 사판식 압축기
CN203146278U (zh) 客车空调压缩机
CN209483566U (zh) 三缸无油活塞空压机

Legal Events

Date Code Title Description
AS Assignment

Owner name: SUZHOU ECOVACS COMMERCIAL ROBOT CO., LTD., CHINA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:FENG, YONGBING;REEL/FRAME:037055/0351

Effective date: 20151010

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION