WO2017012270A1 - 万向轮组和行李箱 - Google Patents

万向轮组和行李箱 Download PDF

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Publication number
WO2017012270A1
WO2017012270A1 PCT/CN2015/098941 CN2015098941W WO2017012270A1 WO 2017012270 A1 WO2017012270 A1 WO 2017012270A1 CN 2015098941 W CN2015098941 W CN 2015098941W WO 2017012270 A1 WO2017012270 A1 WO 2017012270A1
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WO
WIPO (PCT)
Prior art keywords
base
wheel set
universal wheel
set according
ball
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/CN2015/098941
Other languages
English (en)
French (fr)
Inventor
赵瞳
陶群
刘华一君
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.)
Xiaomi Inc
Original Assignee
Xiaomi Inc
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 Xiaomi Inc filed Critical Xiaomi Inc
Priority to RU2016116188A priority Critical patent/RU2682339C2/ru
Priority to KR1020167013584A priority patent/KR101873660B1/ko
Priority to MX2016004850A priority patent/MX373184B/es
Priority to JP2016534670A priority patent/JP2017525604A/ja
Publication of WO2017012270A1 publication Critical patent/WO2017012270A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • B60B33/0015—Castors in general ; Anti-clogging castors assembling to the object, e.g. furniture characterised by adaptations made to castor
    • B60B33/0023—Castors in general ; Anti-clogging castors assembling to the object, e.g. furniture characterised by adaptations made to castor in the form of specific adaptations to the form of the object
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C5/00—Rigid or semi-rigid luggage
    • A45C5/14—Rigid or semi-rigid luggage with built-in rolling means
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C5/00—Rigid or semi-rigid luggage
    • A45C5/03—Suitcases
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C5/00—Rigid or semi-rigid luggage
    • A45C5/04—Trunks; Travelling baskets
    • 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
    • B60B33/0005—Castors in general ; Anti-clogging castors assembling to the object, e.g. furniture characterised by mounting method
    • B60B33/0007—Castors in general ; Anti-clogging castors assembling to the object, e.g. furniture characterised by mounting method by screwing
    • 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
    • B60B33/08—Ball castors
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C5/00—Rigid or semi-rigid luggage
    • A45C5/14—Rigid or semi-rigid luggage with built-in rolling means
    • A45C2005/142—Rigid or semi-rigid luggage with built-in rolling means with spherical rolling means, e.g. ball casters
    • 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
    • B60B2200/40—Articles of daily use
    • B60B2200/45—Suitcases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B2380/00—Bearings
    • B60B2380/10—Type
    • B60B2380/12—Ball bearings
    • 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
    • B60B2900/20—Avoidance of
    • B60B2900/212—Damage
    • 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
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B2900/00—Purpose of invention
    • B60B2900/30—Increase in
    • B60B2900/325—Reliability

Definitions

  • Embodiments of the present disclosure relate to the field of wheel sets, and more particularly to a universal wheel set and a trunk.
  • Embodiments of the present disclosure provide a universal wheel set and a trunk to solve the deficiencies in the related art.
  • a universal wheel set including:
  • the base structure comprising an upper base and a lower base capable of enclosing a cavity
  • a ball that can be locked in an all-round rolling manner in the cavity; wherein a bottom portion of the lower base is provided with a lower end surface of the lower base that can protrude from the lower base and form an exposed rolling An opening of the spherical surface having an inner diameter smaller than a diameter of the wheel.
  • it also includes:
  • the not less than three balls being rollably disposed between the inner wall of the upper base and the surface of the wheel.
  • it also includes:
  • a resilient washer disposed between an inner wall of the upper base and a surface of the wheel, the bottom of the elastic washer being circumferentially evenly distributed with a ball mount corresponding to the not less than three balls.
  • the ball mount is provided with a groove adapted to the shape of the ball.
  • the upper base is a disc-shaped annular structure
  • the elastic washer is disposed on a lower end surface of the upper base.
  • the upper base comprises a cylinder and an upper end cover on an upper end surface of the cylinder, and the elastic washer is disposed on a lower end surface of the upper end cover and located inside the cylinder.
  • the upper base and the lower base are connected by bonding.
  • the upper base and the lower base are connected by a threaded fastener.
  • the lower end surface of the lower base is parallel to the horizontal plane.
  • the lower end surface of the lower base is a slope inclined to a horizontal plane.
  • the bottom inner edge of the lower base is provided with a scraper.
  • a luggage case including:
  • At least a portion of the base structure of the universal wheel set is embedded inside the bottom plate of the case, and the exposed rolling spherical surface of the ball of the universal wheel set is located outside the bottom of the case.
  • the embodiment of the present disclosure can realize the universal rotation of the wheel set by using the wheel that can roll in all directions.
  • the ball can be wrapped and protected to avoid damage such as breakage, bumps, etc., which helps to prolong the service life of the universal wheel set.
  • 1A-1B are schematic structural views of a universal wheel set in the related art
  • FIG. 2 is an exploded view of a caster set according to an exemplary embodiment
  • FIG. 3 is a schematic perspective structural view of an assembled universal wheel set according to an exemplary embodiment
  • FIG. 4 is an exploded view of another caster set according to an exemplary embodiment
  • FIG. 5 is an exploded view of still another caster set according to an exemplary embodiment
  • FIG. 6 is a schematic view showing the structure and assembly relationship between a resilient washer and an upper base according to an exemplary embodiment
  • FIG. 7 is a schematic view showing the structure and assembly relationship between another elastic washer and an upper base according to an exemplary embodiment
  • FIG. 8 is an exploded view of still another caster set according to an exemplary embodiment
  • FIG. 9 is an exploded view of still another caster set according to an exemplary embodiment.
  • FIG. 10 is an exploded view of still another caster set according to an exemplary embodiment
  • FIG. 11 is a perspective structural schematic view of another assembled universal wheel set according to an exemplary embodiment
  • FIG. 12 is a perspective structural schematic view of still another assembled universal wheel set according to an exemplary embodiment
  • FIG. 13 is a cross-sectional structural diagram of a universal wheel set according to an exemplary embodiment
  • FIG. 14 is a perspective structural schematic view of a luggage case according to an exemplary embodiment
  • FIG. 15 is a perspective structural schematic view of another luggage case according to an exemplary embodiment.
  • FIGS. 1A-1B are schematic structural views of a universal wheel set in the related art.
  • the related art universal wheel set includes two rollers 11 arranged in parallel, and the two rollers 11 are horizontally disposed.
  • the shafts 12 are connected such that the two rollers 11 can be synchronously rolled by the horizontal axis 12 to move the trunk or the like to which the universal wheel set is applied; and the horizontal axis 12 is also connected to the vertical axis 13, and the vertical axis 13
  • the bearing structure 14 is attached to the bottom of the trunk (or other item, not shown) such that the two rollers 11, the transverse axis 12 and the longitudinal axis 13 can be rotated horizontally along the bearing structure 14 as a whole to achieve the luggage compartment. "Universal" turns.
  • the roller 11 which is directly in contact with the ground, the roller 11 is completely exposed to the space, and the ground is uneven, violent transportation, etc., it is easy to cause the roller 11, the horizontal axis 12 or the vertical axis 13 to be broken, etc.
  • the damage event makes the universal roller the most fragile structure of the luggage and other boxes and cabinets.
  • FIG. 2 is an exploded view of a universal wheel set according to an exemplary embodiment
  • FIG. 3 is a schematic perspective view of an assembled universal wheel set according to an exemplary embodiment, FIG. 2 As shown in 3, the universal wheel set can include:
  • a base structure comprising an upper base 21 and a lower base 22 capable of enclosing a cavity 221;
  • the ball 3 can be locked in the cavity 221 in all directions; wherein the bottom of the lower base 22 is provided with a portion of the ball 3 protruding from the lower end surface of the base 22 and forming an exposed surface
  • the opening of the spherical surface 31 is rolled, and the inner diameter of the opening is smaller than the diameter of the wheel 3.
  • the ball 3 can be wrapped in the cavity 221, thereby avoiding the direct structure of the ball 3 and the outside, thereby preventing bumps, violent transportation, etc., causing the ball 3 Damage has occurred.
  • the wheel structure is wrapped by the base structure, so that the universal wheel set does not need the fragile and easily broken shaft structure such as the horizontal axis 12 and the vertical axis 13 shown in FIG. 1B during the rolling process. Preventing road surface bumps, violent transportation, etc., causing damage to the structure before the ball 3 such as the base structure helps to improve the overall reliability of the universal wheel set.
  • the inner diameter of the opening formed by the lower end surface of the lower base 22 is smaller than the diameter of the wheel 3, so that it is necessary to place the ball 3 into the cavity 221 with the upper base 21 and the lower base 22 separated, and then The upper base 21 and the lower base 22 are combined to obtain a completed universal wheel set.
  • the upper base 21 and the lower base 22 may be connected by a threaded fastener, such as in FIG. 2, respectively, through the screws 4 through the outer periphery of the upper base 21 and the lower base 22. After the threaded holes, the connection between the upper base 21 and the lower base 22 is achieved.
  • the upper base 21 and the lower base 22 may also be connected by bonding. As shown in FIG. 4, by bonding an adhesive such as glue to at least one of the lower end surface of the upper base 21 and the upper end surface of the lower base 22, the adhesion between the two can be achieved.
  • an adhesive such as glue
  • the upper base 21 and the lower base 22 there are many ways of connecting between the upper base 21 and the lower base 22, which are not limited by the embodiments of the present disclosure.
  • FIG. 5 is an exploded view of still another universal wheel set according to an exemplary embodiment. As shown in FIG. 5, on the basis of the embodiment shown in FIG. 2, the universal wheel set may further include:
  • not less than three balls 5 are rollably disposed between the inner wall of the upper base 21 and the surface of the wheel 3.
  • the sliding friction between the ball 3 and the bottom surface or the inner wall of the upper base 21 can be converted into rolling friction between the ball 3 and the balls 5, which can be lowered.
  • the frictional force sensed by the ball 3 during the rolling process makes the movement of the universal wheel set smoother.
  • an elastic washer 6 may be disposed between the inner wall of the upper base 21 and the surface of the wheel 3, and the bottom of the elastic washer 6 is uniformly distributed in the circumferential direction with one-to-one correspondence with not less than three balls 5.
  • the ball mount 61 has a groove on the ball mount 61 that is shaped to match the shape of the ball 5.
  • the elastic washer 6 by providing the elastic washer 6, the vibrations sensed by the balls 5 and the balls 3 during the rolling process can be absorbed to provide a shock absorbing effect, which helps to extend the service life of the universal wheel set.
  • the elastic force of the elastic washer 6 can appropriately press the ball 5 without affecting the normal rolling between the ball 5 and the ball 3 (that is, the generated pressing force is not excessively large). The contact between the ball 5 and the ball 3 is always maintained, ensuring the stability of the overall structure of the universal wheel set.
  • the ball mount 61 may be in the shape of a bowl as shown in Fig. 6 with the bowl opening facing downward, so that at least a portion of the ball 5 is accommodated therein to limit the balls 5 from falling off.
  • the upper base 21 is a disk-shaped annular structure, and the elastic washer 6 is disposed on the lower end surface of the upper base 21.
  • the cavity 221 shown in FIG. 2 is entirely located inside the lower base 22, and the upper base 21 serves as the cover of the cavity 221.
  • the upper base 21 includes a cylindrical barrel 212 and an upper end cover 213 at an upper end surface of the cylindrical barrel 212, and the elastic washer 6 is disposed at a lower end surface of the upper end cover 213. It is located inside the cylinder 212.
  • the cavity 221 shown in FIG. 2 is composed of an upper base 21 and a lower base 22, and the upper base 21 and the lower base 22 are The structural difference between them is smaller than that shown in FIG. 6, and the structure of the upper base 21 and the lower base 22 can be symmetrical to facilitate the production process; for example, the upper base 21 and the lower base 22 can adopt the identical structure. , or at least a part of the processing of the two coincide, which helps to reduce production costs and increase production efficiency.
  • the embodiment of the present disclosure ensures the balls 5 and the wheel by providing not less than three balls 5.
  • the stability of the ball 3 during the rolling process in other words, as long as no less than three balls 5 are used, the embodiment of the present disclosure does not limit the number of balls 5 specifically used, such as shown in FIG. 8, FIG. 9, and FIG. The situation is when three, four and five balls are used.
  • the lower end surface 222 of the lower base 22 may be parallel to the horizontal plane.
  • the lower end surface 222 can uniformly protect the wheel 3 at various angles, avoiding collisions with the ball 3, etc., and helps to improve the reliability of the universal wheel set.
  • the lower end surface 222 of the lower base 22 may be a slope inclined to a horizontal plane.
  • the lower end surface 222 by setting the lower end surface 222 as a slope, it is possible to package the wheel 3 as much as possible while also allowing the user to use the box or cabinet in which the corresponding universal wheel set is installed, such as When the user pulls the trunk up and down, even on a large angle slope, it can be ensured that the lower end surface 222 does not contact the slope surface (ie, the ground shown in FIG. 12), and the lower end surface 222' in the horizontal condition is avoided. Contact with the slope surface causes inconvenience to drag and pull, and it is easy to wear the lower base 22, which helps to extend the service life of the universal wheel set.
  • the bottom inner edge of the lower base 222 may be provided with a scraper 223 through which the debris adhering to the surface of the ball 3 can be scraped off to maintain the surface of the ball 3 Clean, avoid getting the debris into the cavity 221, and ensure the smooth rolling of the ball 3.
  • a scraper 223 through which the debris adhering to the surface of the ball 3 can be scraped off to maintain the surface of the ball 3 Clean, avoid getting the debris into the cavity 221, and ensure the smooth rolling of the ball 3.
  • the scraper 223 can obviously also be applied to the embodiment shown in FIG. 11 or other embodiments, and the embodiment of the present disclosure does not Line limit.
  • FIG. 14-15 illustrate a luggage case in which a universal wheel set of an embodiment of the present disclosure is mounted.
  • This embodiment places four (or any other number) of universal wheel sets on the bottom of the case 7;
  • the top surface of the upper base 21 may be provided with a connecting member 211 for the connection between the universal base and the casing 7.
  • other connection manners may also be adopted, and the embodiments of the present disclosure do not limit this.
  • At least a part of the base structure of the universal wheel set can be embedded in the bottom of the bottom plate of the casing 7, and the rolling spherical surface 31 of the wheel 3 of the universal wheel set is located at the bottom of the casing 7. Externally, it is ensured that the rolling spherical surface 31 comes into contact with the ground and rolls.
  • most of the base structure can be wrapped inside the casing 7, and only the corresponding portions on the rolling spherical surface 31 and the lower base 22 are exposed, so that the ball 3 and the base structure are Protection against direct contact with external forces during violent transport, etc., helps to extend the life of the universal wheel set.
  • Embodiments of the present disclosure can achieve universal rotation of the wheel set by using a wheel that can roll in all directions.
  • the ball can be packaged by placing the ball in the cavity formed by the base structure. Wrap and protect, to avoid breakage, bumps, etc., causing damage such as breakage, which helps to extend the service life of the universal wheel set.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Purses, Travelling Bags, Baskets, Or Suitcases (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

一种万向轮组和具有该万向轮组的行李箱，该万向轮组包括：底座结构，所述底座结构包括能够围成一腔体（221）的上底座（21）和下底座（22）；轮球（3），所述轮球（3）能全方位滚动地锁定于所述腔体（221）内；其中，所述下底座（22）的底部设有能够使所述轮球（3）的一部分突出所述下底座（22）的下端面并形成外露的滚动球面（31）的开口，所述开口的内径小于所述轮球（3）的直径。

Description

万向轮组和行李箱
本申请基于申请号为201510432151.9、申请日为2015年7月21日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本公开实施例涉及轮组技术领域，尤其涉及万向轮组和行李箱。
背景技术
在日常生活中，很多柜、箱等都在底部安装有轮组，以便于移动、搬运等。举例而言，用户在出差、旅游时往往会携带行李箱，这些行李箱的底部安装有两个或四个轮组，方便用户对行李箱进行拖拉。
然而，相关技术中的行李箱的轮组很容易发生损坏，导致整个行李箱无法继续使用。
发明内容
本公开实施例提供万向轮组和行李箱，以解决相关技术中的不足。
根据本公开实施例的第一方面，提供一种万向轮组，包括：
底座结构，所述底座结构包括能够围成一腔体的上底座和下底座；
轮球，所述轮球能全方位滚动地锁定于所述腔体内；其中，所述下底座的底部设有能够使所述轮球的一部分突出所述下底座的下端面并形成外露的滚动球面的开口，所述开口的内径小于所述轮球的直径。
可选的，还包括：
不少于三个的滚珠，所述不少于三个的滚珠可滚动地设置在所述上底座的内壁与所述轮球的表面之间。
可选的，还包括：
设置于所述上底座的内壁与所述轮球的表面之间的弹性垫圈，所述弹性垫圈的底部沿周向均布有与所述不少于三个的滚珠一一对应的滚珠安装座，所述滚珠安装座上设有与滚珠形状相适配的凹槽。
可选的，所述上底座为盘状圆环结构，所述弹性垫圈设置在所述上底座的下端面上。
可选的，所述上底座包括圆柱筒和位于所述圆柱筒的上端面的上端盖，所述弹性垫圈设置在所述上端盖的下端面上并位于所述圆柱筒的内部。
可选的，所述上底座和所述下底座之间通过粘接方式进行连接。
可选的，所述上底座和所述下底座之间通过螺纹紧固件进行连接。
可选的，所述下底座的下端面与水平面平行。
可选的，所述下底座的下端面为倾斜于水平面的斜面。
可选的，所述下底座的底部内侧边缘设置有刮泥板。
根据本公开实施例的第二方面，提供一种行李箱，包括：
箱体；
至少一个如上述实施例中任一项所述的万向轮组。
可选的，所述万向轮组的底座结构的至少一部分镶嵌于所述箱体的底板内部，所述万向轮组的轮球外露的滚动球面位于所述箱体的底部外部。
本公开的实施例提供的技术方案可以包括以下有益效果：
由上述实施例可知，本公开实施例通过使用可全方位滚动的轮球，可以实现轮组的万向转动。同时，通过将轮球设置于底座结构形成的腔体内，可以对轮球进行包裹和保护，避免摔打、颠簸等导致其发生断裂等损坏，有助于延长万向轮组的使用寿命。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本公开。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本公开的实施例，并与说明书一起用于解释本公开实施例的原理。
图1A-1B是相关技术中的万向轮组的结构示意图；
图2是根据一示例性实施例示出的一种万向轮组的爆炸图；
图3是根据一示例性实施例示出的一种组装后的万向轮组的立体结构示意图；
图4是根据一示例性实施例示出的另一种万向轮组的爆炸图；
图5是根据一示例性实施例示出的又一种万向轮组的爆炸图；
图6是根据一示例性实施例示出的一种弹性垫圈与上底座之间的结构及组装关系示意图；
图7是根据一示例性实施例示出的另一种弹性垫圈与上底座之间的结构及组装关系示意图；
图8是根据一示例性实施例示出的又一种万向轮组的爆炸图；
图9是根据一示例性实施例示出的又一种万向轮组的爆炸图；
图10是根据一示例性实施例示出的又一种万向轮组的爆炸图；
图11是根据一示例性实施例示出的另一种组装后的万向轮组的立体结构示意图；
图12是根据一示例性实施例示出的又一种组装后的万向轮组的立体结构示意图；
图13是根据一示例性实施例示出的一种万向轮组的剖面结构示意图；
图14是根据一示例性实施例示出的一种行李箱的立体结构示意图；
图15是根据一示例性实施例示出的另一种行李箱的立体结构示意图。
具体实施方式
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面 的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本公开实施例相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本公开实施例的一些方面相一致的装置和方法的例子。
图1A-1B是相关技术中的万向轮组的结构示意图，如图1A-1B所示，相关技术中的万向轮组包括两个平行设置的滚轮11，两个滚轮11之间采用横轴12连接，使两个滚轮11可以通过横轴12进行同步滚动，使应用该万向轮组的行李箱等沿地面移动；同时，横轴12还连接至纵轴13，而该纵轴13连接至行李箱(或其他物品，图中未示出)底部的轴承结构14，使得两个滚轮11、横轴12和纵轴13可以整体沿轴承结构14进行水平方向的旋转，实现行李箱的“万向”转动。
然而，由于作为直接与地面接触的滚动结构——滚轮11，完全暴露在空间内，使得地面不平整、暴力运输等情况下，很容易导致滚轮11、横轴12或纵轴13等发生折断等损坏事件，使万向滚轮成为行李箱等箱、柜的最脆弱的结构。
因此，本公开实施例通过对万向轮组的结构改进，以解决相关技术中存在的上述问题；下面结合附图进行详细说明。
1、整体结构
图2是根据一示例性实施例示出的一种万向轮组的爆炸图；图3是根据一示例性实施例示出的一种组装后的万向轮组的立体结构示意图，如图2-3所示，该万向轮组可以包括：
底座结构，该底座结构包括能够围成一腔体221的上底座21和下底座22；
轮球3，该轮球3能全方位滚动地锁定于腔体221内；其中，下底座22的底部设有能够使轮球3的一部分突出下底座22的下端面并形成外露的 滚动球面31的开口，该开口的内径小于轮球3的直径。
在本实施例中，通过在底座结构内形成腔体221，可以将轮球3包裹于该腔体221中，避免轮球3与外部直接结构，从而防止路面颠簸、暴力运输等导致轮球3发生损坏。同时，由底座结构对轮球3进行包裹的同时，使得该万向轮组在滚动过程中，并不需要图1B所示的横轴12、纵轴13等脆弱、易断裂的轴结构，可以防止路面颠簸、暴力运输等导致底座结构等轮球3之前的结构发生损坏，有助于提升万向轮组的整体可靠性。
在本实施例中，下底座22的下端面形成的开口内径小于轮球3的直径，因而需要在上底座21和下底座22分离的情况下，将轮球3置入腔体221中，然后将上底座21和下底座22进行组合，得到完成的万向轮组。其中，在一示例性实施方式中，上底座21和下底座22之间可以通过螺纹紧固件进行连接，比如在图2中，通过螺丝4穿过上底座21和下底座22外围分别设置的螺纹孔后，实现上底座21和下底座22之间的连接。
作为另一示例性实施方式，上底座21和下底座22之间还可以通过粘接方式进行连接。如图4所示，通过在上底座21的下端面和下底座22的上端面中至少之一涂抹胶水等粘接物，即可实现两者的粘接。当然，上底座21和下底座22之间可以存在很多种连接方式，本公开实施例并不对此进行限制。
2、滚珠结构
图5是根据一示例性实施例示出的又一种万向轮组的爆炸图，如图5所示，在图2所示实施例的基础上，万向轮组还可以包括：
不少于三个的滚珠5，不少于三个的滚珠5可滚动地设置在上底座21的内壁与轮球3的表面之间。
在该实施例中，通过设置滚珠5，可以使轮球3与上底座21的底面或内壁之间的滑动摩擦，转换为轮球3与滚珠5之间的滚动摩擦，可以降低 轮球3在滚动过程中感应到的摩擦力，使万向轮组的运动更为流畅。
进一步地，如图5所示，可以在上底座21的内壁与轮球3的表面之间设置弹性垫圈6，弹性垫圈6的底部沿周向均布有与不少于三个的滚珠5一一对应的滚珠安装座61，滚珠安装座61上设有与滚珠5形状相适配的凹槽。
在该实施例中，通过设置弹性垫圈6，可以吸收滚珠5和轮球3在滚动过程中感应到的震动，起到减震作用，有助于延长万向轮组的使用寿命。同时，通过弹性垫圈6的弹性力，可以对滚珠5进行适当挤压，在不影响滚珠5与轮球3之间的正常滚动的情况下(即产生的挤压力量不会过大)，使滚珠5与轮球3之间始终能够维持接触，确保万向轮组的整体结构的稳定性。
在该实施例中，滚珠安装座61可以呈图6所示的碗状且碗口朝下，从而将滚珠5的至少一部分容纳其中，对滚珠5进行限位，避免发生脱落。
在本公开实施例的技术方案中，弹性垫圈6与上底座21之间可以存在多种配合关系，下面对其中两种可能的配合关系进行描述，但本公开实施例并不对此进行限制。
配合关系一
在本公开实施例一示例性实施方式中，如图6所示，上底座21为盘状圆环结构，弹性垫圈6设置在上底座21的下端面上。在该实施例中，图2所示的腔体221全部位于下底座22内部，而上底座21作为该腔体221的盖体。
配合关系二
在本公开实施例另一示例性实施方式中，如图7所示，上底座21包括圆柱筒212和位于圆柱筒212的上端面的上端盖213，弹性垫圈6设置在上端盖213的下端面上并位于圆柱筒212的内部。在该实施例中，图2所示的腔体221由上底座21和下底座22共同构成，则上底座21和下底座22 之间的结构差异比图6所示的情况更小，甚至可以使上底座21和下底座22的结构对称，便于生产加工；举例而言，上底座21和下底座22可以采用完全相同的结构，或者两者的至少一部分加工过程重合，从而有助于降低生产成本、提升生产效率。
此外，虽然在图5中设置有六个滚珠5，但由于三点确定一条直线，因而正如上文所述，本公开实施例通过设置不少于三个滚珠5，即可确保滚珠5和轮球3在滚动过程中的稳定性；换言之，只要采用不少于三个滚珠5，本公开实施例对具体采用的滚珠5的数量不进行限制，比如图8、图9和图10中分别示出了采用三个、四个和五个滚珠5时的情形。
3、下底座22的端面设置
作为一示例性实施例，如图11所示，下底座22的下端面222可以与水平面平行。在该实施例中，下端面222可以在各个角度均匀地保护轮球3，避免对轮球3造成冲撞等，有助于提升万向轮组的可靠性。
作为另一示例性实施例，如图12所示，下底座22的下端面222可以为倾斜于水平面的斜面。在该实施例中，通过将下端面222设置为斜面，可以在尽可能对轮球3进行包裹的同时，还可以使用户在使用安装相应的万向轮组的箱或柜的过程中，比如用户拉着行李箱上下坡时，即便在很大角度的斜坡上，仍然能够确保下端面222不会接触到坡面(即图12所示的地面)，而避免水平状况下的下端面222’接触到坡面而导致不便拖拉、容易磨损下底座22等情况，有助于延长万向轮组的使用寿命。
进一步地，如图13所示，下底座222的底部内侧边缘可以设置有刮泥板223，通过该刮泥板223可以将粘在轮球3表面的杂物刮下，保持轮球3的表面清洁，避免将杂物卷入腔体221内部，确保轮球3的流畅滚动。当然，虽然图13中采用图12所示的结构进行举例，但该刮泥板223显然也可以应用于图11所示的实施例或其他实施例中，本公开实施例并不对此进 行限制。
4、行李箱
图14-15示出了安装有本公开实施例的万向轮组的行李箱，该实施例将四个(或其他任意数量)万向轮组置于箱体7的底部；结合图2-5等实施例所示，上底座21的顶面可以设置连接件211，以便万向底座与该箱体7之间的连接。当然，也可以采用其他连接方式，本公开实施例并不对此进行限制。
其中，如图14所示，而万向轮组的底座结构的至少一部分可以镶嵌于箱体7的底板内部，而使万向轮组的轮球3外露的滚动球面31位于箱体7的底部外部，确保该滚动球面31与地面接触并滚动。在该实施例中，如图15所示，可以将底座结构的大部分都包裹在箱体7内部，而仅将滚动球面31及下底座22上对应部分露出，从而对轮球3和底座结构进行保护，避免在暴力运输等情况下直接接触外力，有助于延长万向轮组的使用寿命。
本领域技术人员在考虑说明书及实践这里公开的公开后，将容易想到本公开实施例的其它实施方案。本申请旨在涵盖本公开实施例的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本公开实施例的一般性原理并包括本公开实施例未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本公开实施例的真正范围和精神由下面的权利要求指出。
应当理解的是，本公开实施例并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本公开实施例的范围仅由所附的权利要求来限制。
工业实用性
本公开实施例通过使用可全方位滚动的轮球，可以实现轮组的万向转动。同时，通过将轮球设置于底座结构形成的腔体内，可以对轮球进行包 裹和保护，避免摔打、颠簸等导致其发生断裂等损坏，有助于延长万向轮组的使用寿命。

Claims (12)

  1. 一种万向轮组，包括：
    底座结构，所述底座结构包括能够围成一腔体的上底座和下底座；
    轮球，所述轮球能全方位滚动地锁定于所述腔体内；其中，所述下底座的底部设有能够使所述轮球的一部分突出所述下底座的下端面并形成外露的滚动球面的开口，所述开口的内径小于所述轮球的直径。
  2. 根据权利要求1所述的万向轮组，其中，还包括：
    不少于三个的滚珠，所述不少于三个的滚珠可滚动地设置在所述上底座的内壁与所述轮球的表面之间。
  3. 根据权利要求2所述的万向轮组，还包括：
    设置于所述上底座的内壁与所述轮球的表面之间的弹性垫圈，所述弹性垫圈的底部沿周向均布有与所述不少于三个的滚珠一一对应的滚珠安装座，所述滚珠安装座上设有与滚珠形状相适配的凹槽。
  4. 根据权利要求3所述的万向轮组，其中，所述上底座为盘状圆环结构，所述弹性垫圈设置在所述上底座的下端面上。
  5. 根据权利要求3所述的万向轮组，其中，所述上底座包括圆柱筒和位于所述圆柱筒的上端面的上端盖，所述弹性垫圈设置在所述上端盖的下端面上并位于所述圆柱筒的内部。
  6. 根据权利要求1所述的万向轮组，其中，所述上底座和所述下底座之间通过粘接方式进行连接。
  7. 根据权利要求1所述的万向轮组，其中，所述上底座和所述下底座之间通过螺纹紧固件进行连接。
  8. 根据权利要求1所述的万向轮组，其中，所述下底座的下端面与水平面平行。
  9. 根据权利要求1所述的万向轮组，其中，所述下底座的下端面为 倾斜于水平面的斜面。
  10. 根据权利要求1所述的万向轮组，其中，所述下底座的底部内侧边缘设置有刮泥板。
  11. 一种行李箱，包括：
    箱体；
    至少一个如权利要求1至10中任一项所述的万向轮组。
  12. 根据权利要求11所述的行李箱，其中，所述万向轮组的底座结构的至少一部分镶嵌于所述箱体的底板内部，所述万向轮组的轮球外露的滚动球面位于所述箱体的底部外部。
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CN204801421U (zh) * 2015-07-21 2015-11-25 小米科技有限责任公司 万向轮组和行李箱

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KR20170021221A (ko) 2017-02-27
EP3121030A1 (en) 2017-01-25
RU2016116188A3 (zh) 2018-07-02
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US20170021668A1 (en) 2017-01-26
KR101873660B1 (ko) 2018-07-02
US10137732B2 (en) 2018-11-27
MX2016004850A (es) 2017-09-01

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