CN106985608A - 一种万向轮 - Google Patents

一种万向轮 Download PDF

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Publication number
CN106985608A
CN106985608A CN201710244776.1A CN201710244776A CN106985608A CN 106985608 A CN106985608 A CN 106985608A CN 201710244776 A CN201710244776 A CN 201710244776A CN 106985608 A CN106985608 A CN 106985608A
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roller
support
wheel carrier
row
wheel
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陈小平
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Changzhou Jiqing Electrical And Mechanical Co Ltd
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Changzhou Jiqing Electrical And Mechanical Co Ltd
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Priority to CN201710244776.1A priority Critical patent/CN106985608A/zh
Publication of CN106985608A publication Critical patent/CN106985608A/zh
Priority to CN201711017149.0A priority patent/CN107804117A/zh
Priority to CN201721394533.8U priority patent/CN207711710U/zh
Priority to CN201711011714.2A priority patent/CN107811775A/zh
Priority to CN201711011722.7A priority patent/CN107753197B/zh
Priority to PCT/CN2018/080428 priority patent/WO2019080444A1/zh
Priority to PCT/CN2018/080427 priority patent/WO2019080443A1/zh
Priority to JP2018001331U priority patent/JP3216935U/ja
Priority to DE202018101986.4U priority patent/DE202018101986U1/de
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B19/00—Wheels not otherwise provided for or having characteristics specified in one of the subgroups of this group
    • B60B19/12—Roller-type wheels
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/04—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven
    • A61G5/048—Power-assistance activated by pushing on hand rim or on handlebar
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/04—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven
    • A61G5/041—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven having a specific drive-type
    • A61G5/045—Rear wheel drive
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/04—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven
    • A61G5/041—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven having a specific drive-type
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/04—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven
    • A61G5/047—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven by a modular detachable drive system
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/08—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
    • A61G5/0808—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction
    • A61G5/0816—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction folding side to side, e.g. reducing or expanding the overall width of the wheelchair
    • A61G5/0825—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction folding side to side, e.g. reducing or expanding the overall width of the wheelchair comprising a scissor-type frame, e.g. having pivoting cross bars for enabling folding
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B19/00—Wheels not otherwise provided for or having characteristics specified in one of the subgroups of this group
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B3/00—Disc wheels, i.e. wheels with load-supporting disc body
    • B60B3/04—Disc wheels, i.e. wheels with load-supporting disc body with a single disc body not integral with rim, i.e. disc body and rim being manufactured independently and then permanently attached to each other in a second step, e.g. by welding
    • B60B3/048—Disc wheels, i.e. wheels with load-supporting disc body with a single disc body not integral with rim, i.e. disc body and rim being manufactured independently and then permanently attached to each other in a second step, e.g. by welding the rim being rotatably mounted to the wheel disc
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B33/00—Castors in general; Anti-clogging castors
    • B60B33/0002—Castors in general; Anti-clogging castors assembling to the object, e.g. furniture
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B33/00—Castors in general; Anti-clogging castors
    • B60B33/0028—Construction of wheels; methods of assembling on axle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
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    • B62B5/0026—Propulsion aids
    • B62B5/0033—Electric motors
    • B62B5/0036—Arrangements of motors
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B5/00—Accessories or details specially adapted for hand carts
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    • B62B5/0033—Electric motors
    • B62B5/0036—Arrangements of motors
    • B62B5/0043—One motor drives one wheel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B5/00—Accessories or details specially adapted for hand carts
    • B62B5/0026—Propulsion aids
    • B62B5/0069—Control
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G2203/00—General characteristics of devices
    • A61G2203/30—General characteristics of devices characterised by sensor means
    • A61G2203/36—General characteristics of devices characterised by sensor means for motion
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G2203/00—General characteristics of devices
    • A61G2203/70—General characteristics of devices with special adaptations, e.g. for safety or comfort
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/1054—Large wheels, e.g. higher than the seat portion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B2200/00—Type of product being used or applied
    • B60B2200/20—Furniture or medical appliances
    • B60B2200/22—Chairs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B2900/00—Purpose of invention
    • B60B2900/10—Reduction of
    • B60B2900/133—Noise
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B2900/00—Purpose of invention
    • B60B2900/30—Increase in
    • B60B2900/321—Lifetime
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/80—Other vehicles not covered by groups B60Y2200/10 - B60Y2200/60
    • B60Y2200/84—Wheelchairs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B2301/00—Wheel arrangements; Steering; Stability; Wheel suspension
    • B62B2301/02—Wheel arrangements; Steering; Stability; Wheel suspension comprising wheels for longitudinal travelling and wheels for lateral travelling

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Public Health (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Transportation (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Handcart (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Motorcycle And Bicycle Frame (AREA)
  • Motor Power Transmission Devices (AREA)

Abstract

本发明涉及一种万向轮，包括环形的轮架、腰鼓形的滚子，在轮架的周向表面设有沿轮架轴向分布的两排支架组，支架组包括沿轮架周向表面均布的偶数个数的支架，在各支架组的相邻的两个支架之间轴承连接滚子，两排支架组的滚子呈交错互补排列，在各支架组的相邻的两个支架之间设有围于滚子外侧的弧状的保护沿，保护沿位于轮架的端面，滚子与保护沿之间设有间隙。本发明安装于轮椅的后下方，通过所述电机驱动轮架运动。可以使轮椅在平地上随意推向任意方向；结构合理，工艺性好，安装方便，受力良好，没有偏心力矩，使用寿命长，运行平稳，无噪声；保护沿使得滚子的密封性好，保护滚子，防止滚子被摩擦而影响滚动精度，进而影响平稳性。

Description

一种万向轮
技术领域
本发明涉及一种适用于轮椅等工具的万向轮，属于运动器械领域。
背景技术
轮椅是康复的重要工具，它不仅是肢体伤残者的代步工具，更重要的是使他们借助于轮椅进行身体锻炼和参与社会活动，所以人们对轮椅的灵活性要求也越来越高。
传统的万向轮受外力推动，需改变轮子的方向才能运动，且当外力改变运动方向时，车轮需要有一段调整轮子方向的过程，使用不灵活。并且车轮受负载的方向与轮子中心偏移，使轮架产生偏心力矩，运行不平稳，影响使用寿命。
发明内容
本发明要解决的技术问题是：在狭小空间等情况，普通的万向轮很难灵活转向，本发明提供了一种万向轮来解决上述问题。
本发明解决其技术问题所采用的技术方案是：
一种万向轮，包括环形的轮架、腰鼓形的滚子，在轮架的周向表面设有沿轮架轴向分布的两排支架组，支架组包括沿轮架周向表面均布的偶数个数的支架，在各支架组的相邻的两个支架之间通过轴承活动连接滚子，两排支架组的滚子呈交错互补排列，在各支架组的相邻的两个支架之间设有围于滚子外侧的弧状的保护沿，保护沿位于轮架的端面，滚子与保护沿之间设有间隙。可以使轮椅在平地上随意推向任意方向；结构合理，设置偶数个数的支架，则滚子的个数也为偶数，使得万向轮受力良好，运行平稳。
两排支架组的相互交错互补排列的三个滚子的弧形表面的中心点之间呈等腰三角形排列，该三个滚子中位于同一排支架组的两个滚子位于等腰三角形的底边上。这里两排支架组的相互交错互补排列的三个滚子之间呈等腰三角形排列，该结构的设置可使得着地的三个滚子始终同时平衡的接触于底面，使得万向轮在运行过程中始终保持稳定的状态，若两排支架组的相互交错互补排列的三个滚子之间为非等腰三角形排列，则万向轮在运行过程中则会不稳定，尤其在万向轮转弯时会出现只有两个滚子着地的情形，万向轮则会不平衡，轮椅也会出现轻微的颠簸，使得坐在轮椅上的人感觉不舒适。
支架的外侧顶端呈与轮架同心的圆弧状，圆弧的半径为r，滚子的弧形表面的中心所在的与轮架同心的圆的半径为，的数值在0.96～0.98范围内，滚子的弧形表面的半径为，，r、、皆为正有理数，且r、、的单位均为mm。这里设置r/的数值在0.96～0.98范围内，万向轮的稳定性、寿命最好，若小于该数值范围，则支架对滚子的支撑力较差，滚子自身的受力比较大，会影响滚子的寿命；若大于该数值范围，虽然支架对滚子的支撑力好，但是会使得万向轮越过障碍物的能力降低，支架会形成阻力。这里设置=r，万向轮的稳定性最好，若<r，则滚子与地面接触面积会减小，摩擦力会减小，万向轮运行时会不够稳定，会出现方向感控制不好，尤其在万向轮转弯时更容易出现打滑现象；若>r，虽然增大了滚子与地面的接触面积，增大了滚子与地面的摩擦力，但这时会导致滚子滚动起来比较笨重，不灵活，且会降低滚子的使用寿命。
支架由左右两个支架壁相互对接而成，且两个支架壁之间通过螺钉连接，轴承支撑于两个支架壁之间。
在轮架环内沿周向设有从齿圈。
在轮架环内安装有电机，所述电机两侧设有盖板，所述盖板与轮架固定连接，所述电机的外圈设有与从齿圈相啮合的主齿圈。
本发明安装于轮椅的后下方，通过所述电机驱动轮架运动。可以使轮椅在平地上随意推向任意方向；结构合理，工艺性好，安装方便，受力良好，没有偏心力矩，使用寿命长，运行平稳，无噪声；设置保护沿，使得滚子的密封性好，保护滚子，防止滚子被摩擦而影响滚动精度，进而影响平稳性。
附图说明
图1是本发明的结构示意图；
图2是图1中的A-A剖视图；
图3是图2中的B的放大结构示意图；
图4是本发明安装有电机的结构示意图；
图5是电机的结构示意图；
图6是本发明安装于轮椅上的结构示意图。
其中：1、轮架；2、滚子；3、小轴承；4、支架；4-1、支架壁；5、保护沿；6、从齿圈；7、电机；8、盖板；9、主齿圈；10、轮椅；11、等腰三角形；11-1、底边；12、螺钉。
具体实施方式
为了加深对本发明的理解，下面将结合附图和实施例对本发明做进一步详细描述。
参见附图1～附图6，本发明提出了一种万向轮，包括环形的轮架1、腰鼓形的滚子2，在轮架1的周向表面设有沿轮架1轴向分布的两排支架组，支架组包括沿轮架1周向表面均布的8个支架4，在各支架组的相邻的两个支架4之间通过小轴承3活动连接滚子2，两排支架组的滚子2呈交错互补排列，在各支架组的相邻的两个支架4之间设有围于滚子2外侧的弧状的保护沿5，保护沿5位于轮架1的端面，滚子2与保护沿5之间设有间隙。
两排支架组的相互交错互补排列的三个滚子2的弧形表面的中心点之间呈等腰三角形11排列，该三个滚子2中位于同一排支架组的两个滚子2位于等腰三角形11的底边11-1上。
支架4的外侧顶端呈与轮架1同心的圆弧状，圆弧的半径为r，滚子2的弧形表面的中心所在的与轮架1同心的圆的半径为，的数值在0.96～0.98范围内，滚子2的弧形表面的半径为，，r、、皆为正有理数，且r、、的单位均为mm。本实施例，
，=100mm，。
支架4由左右两个支架壁4-1相互对接而成，且两个支架壁4-1之间通过螺钉12连接，小轴承3支撑于两个支架壁4-1之间。
在轮架1环内沿周向设有从齿圈6。
在轮架1环内安装有电机7，所述电机7两侧设有盖板8，所述盖板8与轮架1固定连接，所述电机7的外圈设有与从齿圈6相啮合的主齿圈9。
本发明安装于轮椅10的后下方，通过电机7驱动轮架1运动，滚子2着地，可以使轮椅10在平地上随意推向任意方向。结构合理，工艺性好，安装方便，受力良好，没有偏心力矩，使用寿命长，运行平稳，无噪声；密封性好。
以上所述仅为本发明的实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (6)

1.一种万向轮，其特征在于：包括环形的轮架、腰鼓形的滚子，在轮架的周向表面设有沿轮架轴向分布的两排支架组，支架组包括沿轮架周向表面均布的偶数个数的支架，在各支架组的相邻的两个支架之间通过轴承活动连接滚子，两排支架组的滚子呈交错互补排列，在各支架组的相邻的两个支架之间设有围于滚子外侧的弧状的保护沿，保护沿位于轮架的端面，滚子与保护沿之间设有间隙。
2.根据权利要求1所述的万向轮，其特征在于：两排支架组的相互交错互补排列的三个滚子的弧形表面的中心点之间呈等腰三角形排列，该三个滚子中位于同一排支架组的两个滚子位于等腰三角形的底边上。
3.根据权利要求2所述的万向轮，其特征在于：支架的外侧顶端呈与轮架同心的圆弧状，圆弧的半径为r，滚子的弧形表面的中心所在的与轮架同心的圆的半径为，的数值在0.96～0.98范围内，滚子的弧形表面的半径为，，r、、皆为正有理数，且r、、的单位均为mm。
4.根据权利要求3所述的万向轮，其特征在于：支架由左右两个支架壁相互对接而成，且两个支架壁之间通过螺钉连接，轴承支撑于两个支架壁之间。
5.根据权利要求4所述的万向轮，其特征在于：在轮架环内沿周向设有从齿圈。
6.根据权利要求5所述的万向轮，其特征在于：在轮架环内安装有电机，所述电机两侧设有盖板，所述盖板与轮架固定连接，所述电机的外圈设有与从齿圈相啮合的主齿圈。
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