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    • 8. 发明授权
    • Positioning device of retractable bars of a trolley
    • 手推车伸缩杆的定位装置
    • US5595092A
    • 1997-01-21
    • US410341
    • 1995-03-24
    • Chin-chang Cheng
    • Chin-chang Cheng
    • B62B1/12G05G5/22
    • B62B1/125B62B2202/24Y10T403/32501Y10T74/2066
    • A positioning device of a pair of telescopically retractable vertical bars of a trolley includes a sleeve member, a pair of eccentric rings and a control unit. The sleeve member has a pair of sleeves coaxially rigidly mounted on outer tubes of the vertical bars, a plate having a height no less than a height of the sleeves and horizontally extending between the sleeves and tangentially in contact with them at an outer periphery thereof, and a gap respectively and radially defined in the sleeves. The eccentric rings have an inner diameter equal to an outer diameter of inner tubes of the vertical bars for the inner tubes passing therethrough and are coaxially rivetally retained in the gaps with a thinner ring wall thereof in contact with the plate. The control unit is adapted to actuate the eccentric rings to rotate and cause a thicker ring wall thereof to contact the plate and thereby radially displacing the eccentric rings to tighten the inner tubes of the vertical bars to the sleeves and thereby positioning the vertical bars.
    • 手推车的一对可伸缩的垂直杆的定位装置包括套筒构件,一对偏心环和控制单元。 套筒构件具有同轴刚性地安装在垂直杆的外管上的一对套筒,板的高度不小于套筒的高度,并且在套筒之间水平地延伸并在其外周切向地与它们接触, 和间隙,并且径向地限定在套筒中。 偏心环的内径等于通过其的内管的垂直杆的内管的外径,并且同轴地保持在间隙中,其较薄的环壁与板接触。 控制单元适于致动偏心环以旋转,并使其较厚的环壁与板接触,从而径向移动偏心环,以将垂直杆的内管紧固到套筒上,从而定位垂直杆。
    • 10. 发明授权
    • Wheel-mounting assembly for a handcart
    • 手车车轮安装组件
    • US5494340A
    • 1996-02-27
    • US289943
    • 1994-08-12
    • Chin-Chang Cheng
    • Chin-Chang Cheng
    • B60B37/10B60B37/00
    • B60B37/10
    • A handcart wheel-mounting assembly includes a mount member which has a first tubular portion, a pair of first lug portions formed on an outer periphery of the first tubular portion and each having a slot defined therein, a first socket vertically defined in each of the first lug portions and communicating with associated slot, a second tubular portion co-axially formed in the wheel and having a tubular compartment defined therein for receiving the first tubular portion, a pair of second lug portions formed on an outer periphery of the second tubular portion each having a substantially U-shaped recess defined therein and communicating with the compartment for receiving a corresponding one of the pair of first lug portions, a second socket vertically defined in each of the pair of second lug portions and communicating with associated recess for alignment with associated first socket, and a resilient member received in the slot of each of the pair of first lug portions and having a latch formed thereon which is biased through the first socket into the second socket and projecting outwards of associated the second lug portion, a substantially L-shaped pressing element extending from the resilient member and having a horizontal section located above associated second lug portion.
    • 手车轮安装组件包括安装构件,其具有第一管状部分,形成在第一管状部分的外周上并且每个具有限定在其中的狭槽的一对第一突出部分, 第一凸起部分并与相关联的槽连通,第二管状部分同轴地形成在车轮中并且具有限定在其中的管状隔室用于容纳第一管状部分;一对第二突出部分,形成在第二管状部分的外周上 每个具有限定在其中的基本上U形的凹部,并且与所述隔间连通以接收所述一对第一凸耳部分中的对应的一个;第二插座,其垂直限定在所述一对第二凸耳部分中的每一个中,并且与相关联的凹部连通, 以及弹性构件,其容纳在所述一对第一凸耳部分中的每一个的所述槽中并且具有闩锁 其形成在其上,其通过第一插座偏压进入第二插座并且从相关联的第二凸耳部分向外突出,从弹性构件延伸并且具有位于相关联的第二凸耳部分上方的水平部分的大致L形的按压元件。