WO2018188651A1 - 用于手推车的脚轮和手推车 - Google Patents

用于手推车的脚轮和手推车 Download PDF

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Publication number
WO2018188651A1
WO2018188651A1 PCT/CN2018/083002 CN2018083002W WO2018188651A1 WO 2018188651 A1 WO2018188651 A1 WO 2018188651A1 CN 2018083002 W CN2018083002 W CN 2018083002W WO 2018188651 A1 WO2018188651 A1 WO 2018188651A1
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WIPO (PCT)
Prior art keywords
rotating wheel
contact position
rotating shaft
friction
housing
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PCT/CN2018/083002
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English (en)
French (fr)
Inventor
陈涛
潘传荣
兰维建
卢海洋
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无锡知谷网络科技有限公司
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Publication of WO2018188651A1 publication Critical patent/WO2018188651A1/zh

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    • 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
    • B60B33/0078—Castors in general; Anti-clogging castors characterised by details of the wheel braking mechanism
    • B60B33/0081—Castors in general; Anti-clogging castors characterised by details of the wheel braking mechanism acting on tire tread
    • 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
    • B60B33/0078—Castors in general; Anti-clogging castors characterised by details of the wheel braking mechanism
    • B60B33/0094—Castors in general; Anti-clogging castors characterised by details of the wheel braking mechanism actuated automatically

Definitions

  • the present invention relates to the field of carts, and more particularly to casters for carts and carts with electronic equipment.
  • the common trolleys on the market are parked by manual intervention, and there are some safety hazards. Take the trolleys of airports, hospitals, warehouses or supermarkets as an example. They cannot brake on the slope according to the angle of the slope. It is especially easy to cause rollover or rolling because of inadvertent operation, and there is a risk of hitting people or things around. . Furthermore, existing carts can still be used outside the controlled area, thus causing loss or discarding. In addition, existing carts with electronic equipment cannot accurately calculate the time from the current location to the destination, and it is impossible to control the speed of pushing the trolley.
  • the present invention provides a caster for a trolley comprising:
  • a housing pivotally coupled to the first shaft and the outer member
  • One portion is located in the housing and the other portion extends out of the rotating wheel of the housing;
  • a sensor disposed in the first rotating shaft and capable of being triggered by the marking element to generate an electrical signal
  • the marking element causes the sensor to generate an electrical signal.
  • the caster for a trolley includes:
  • An elastic friction element disposed within the housing
  • a pressing member disposed in the housing for pressing the friction member to deform, the pressing member being coupled to the first rotating shaft;
  • the pressing member and the friction member have a non-contact position, a first contact position, and a second contact position;
  • the friction element contacts the rotating wheel when the two are in the first contact position, so that the first rotating shaft cannot rotate, and the rotating wheel can roll;
  • the friction element contacts the rotating wheel when the two are in the second contact position such that the first rotating shaft cannot rotate, and the rotating wheel cannot roll.
  • the trolley caster provided by the invention comprises a friction element and a pressing element, the two elements have a non-contact position, a first contact position and a second contact position, and the friction between the friction element and the rotating wheel is provided by the above three positions.
  • the force has three states: a small first friction force and a large second friction force.
  • the trolley caster can generate a first frictional force and a second frictional force according to a set requirement, so as to first limit the rotation of the rotating wheel in the horizontal direction, and then limit the rolling of the rotating wheel in the vertical direction.
  • one end of the first rotating shaft extends into the housing; the pressing member is sleeved on one end of the first rotating shaft located in the housing, and is capable of being The rotation of the first shaft linearly moves in the vertical direction.
  • the friction element comprises:
  • a friction plate rotatable along the second axis of rotation, the friction plate having a first portion for contacting the pressing member, a second portion for contacting the rotating wheel, and for abutting against a third portion of elasticity on the inner wall of the housing;
  • the pressing element When the friction element and the pressing element are in the first contact position or the second contact position, the pressing element is in contact with the first portion, and the rotating wheel is in contact with the second portion To generate a first or second frictional force, the third portion is deformed.
  • the first portion and the third portion are located above the second shaft and the second portion is located below the second shaft.
  • the marking element is a permanent magnet block disposed within a tread of the rotating wheel; the sensor is a magnetic induction probe.
  • the invention also provides a trolley comprising:
  • a speed detecting unit capable of acquiring a speed value according to the number of times the detecting element generates the electric signal by the detecting unit per unit time.
  • the speed detecting unit can record the number of revolutions of the rotating wheel per unit time to obtain the speed value.
  • the cart includes:
  • a position detecting unit disposed on the vehicle body for acquiring current position information of the cart
  • control unit capable of presetting a travel path according to current location information and a selected destination, the control unit being capable of calculating a required time according to the travel path and the speed value;
  • the speed detecting unit stops acquiring the speed value, and continues to acquire the speed value after the control unit re-plans the traveling path.
  • the speed detecting unit stops acquiring the speed value, and the control unit re-plans the traveling. Continue to get the speed value after the path.
  • the control unit controls the pressing member and the friction member in the non-contact position when a speed value acquired by the speed detecting unit is greater than or equal to a first preset value. And the second contact position is changed a plurality of times; when the speed value obtained by the speed detecting unit is greater than or equal to a second preset value, the control unit controls the pressing element and the friction element to enter and remain in In the second contact position, the second preset value is greater than the first preset value.
  • the first preset speed value and the second preset speed value may be set.
  • the trolley When the pushing speed of the trolley reaches the first preset speed value, the trolley first adopts a constant “first”.
  • the way of "point brake" (returning between the non-contact position and the second contact position) reminds the user that when the user ignores the prompt and continues to push at a high speed and reaches the second preset speed value, the trolley immediately enters the "brake” state. To prevent users from continuing to implement.
  • FIG. 1 is a schematic structural view of a caster for a trolley according to an embodiment of the present invention
  • FIG. 2 is a schematic view showing the installation of a marking element and a sensor for a caster of a trolley according to an embodiment of the present invention
  • FIG. 3 is an exploded view of a caster for a cart according to another embodiment of the present invention.
  • FIG. 4 is a schematic view showing the internal structure of a caster for a trolley according to another embodiment of the present invention.
  • FIG. 5 is a schematic structural view of a friction element for a caster of a handcart according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram of a trolley provided by an embodiment of the present invention.
  • an embodiment of the present invention provides a caster for a cart comprising a fixed plate 1, a housing 2, a rotating wheel 3, a marking member 4, and a sensor 5.
  • the fixed plate 1 and the housing 2 are pivotally connected by a first rotating shaft 6 to enable the housing 2 to be rotated 360° in a plane relative to the fixed plate 1.
  • the housing 2 has a semi-closed structure, the wheel center of the rotating wheel 3 is hinged in the housing 1, a part of the rotating wheel 3 is located in the housing 1, and the other part is extended out of the housing 1, and the rotating wheel 3 is rotatable relative to the housing 2.
  • the marking element 4 is arranged on the rotating wheel 3, and the sensor 5 is arranged in the first rotating shaft 6 and can be triggered by the marking element 4 to generate an electrical signal. Each time the rotating wheel 2 makes one revolution, the marking element 4 causes the sensor 5 to generate an electrical signal.
  • the fixing plate 1 can be omitted, and the first rotating shaft 6 can be directly connected to the external component.
  • the marking element 4 is a permanent magnet block arranged in the tread of the rotating wheel 2.
  • the sensor 7 is a magnetic induction probe provided inside the first rotating shaft 6.
  • the circuit connection line of the magnetic induction probe can also be disposed inside the first rotating shaft 6, thereby avoiding the winding of the connecting line.
  • the caster for the cart further includes an elastic friction element 7 and a pressing element 8.
  • the friction element 7 is disposed in the housing 2 at a position adjacent to the rotating wheel 3.
  • the pressing element 8 is likewise arranged in the housing 2 for pressing the friction element 7 to deform.
  • the pressing member 8 and the friction member 7 have a non-contact position, a first contact position and a second contact position, and when the two are in the non-contact position, the friction member 7 maintains the original state by its own elasticity; when the two are in the first contact position When the friction element 7 contacts the rotating wheel 2, so that the first rotating shaft 6 cannot rotate, the rotating wheel 2 can roll; when the two are in the second contact position, the frictional element 7 contacts the rotating wheel 2, so that the first rotating shaft 6 cannot Rotating, the turning wheel 2 cannot be rolled.
  • one end of the first rotating shaft 6 extends into the casing 2; the pressing member 8 is sleeved on one end of the first rotating shaft 6 located in the casing 2. And can move linearly in the vertical direction as the first rotating shaft 6 rotates, similar to the relationship between the screw and the nut. As the first rotating shaft 6 rotates, the pressing member 8 and the friction member 7 first enter the first contact position, and as the first rotating shaft 6 continues to rotate, the pressing member 8 and the friction member 7 enter the second contact position.
  • the friction element 7 includes a second rotating shaft 71 fixedly disposed within the housing 2, and a friction plate 72 rotatable along the second rotating shaft 71.
  • the friction plate 72 has a second portion 722 for contacting the pressing member 8 and a second portion 722 for contacting the rotating wheel 3, and a third portion 723 for abutting against the inner wall of the casing 2.
  • the pressing member 8 When the friction element 7 and the pressing element 8 are in the first contact position or the second contact position, the pressing member 8 is in contact with the first portion 721, and the rotating wheel 3 and the second portion 722 are in contact to generate a first or second frictional force, The third portion 723 is deformed.
  • first portion 721 and the third portion 723 are located above the second rotating shaft 71, and the second portion 722 is located below the second rotating shaft 71, so that the three actually constitute the lever mechanism as shown in FIG.
  • the present invention also provides a cart employing any of the casters described above.
  • a vehicle body and a speed detecting unit disposed on the vehicle body capable of acquiring a speed value according to the number of times the marking element causes the sensor to generate an electrical signal per unit time is obtained.
  • the cart further includes a position detecting unit and a control unit disposed on the vehicle body for acquiring current position information of the cart.
  • the control unit is capable of presetting a travel path based on the current location information and the selected destination, and the control unit is capable of calculating a required time based on the travel path and the speed value.
  • the speed detecting unit stops acquiring the speed value, and the control unit continues to acquire the speed value after re-planning the traveling path.
  • an off-angle a (a ⁇ 45°) may be set.
  • the speed detecting unit stops acquiring the speed value, and is to be controlled. The unit continues to acquire the speed value after re-planning the travel path.
  • the control unit controls the pressing member 8 and the friction member 7 to be changed a plurality of times in the non-contact position and the second contact position.
  • the control unit controls the pressing member 8 and the friction member 7 to enter the second contact position, and the second preset value is greater than the first preset value.
  • the first preset value is 3 m/s
  • the second preset value is 3.5 m/s
  • the control unit controls the pressing member 8 and the friction member 7 at The non-contact position and the second contact position are changed a plurality of times, that is, the control unit controls the friction element 8 and the rotating wheel to generate a small friction force in a "point brake" manner to remind the operator that the speed limit has been exceeded.
  • the control unit controls the pressing member 8 and the friction member 7 to enter the second contact position, that is, the control unit controls the friction element 7 and the rotating wheel to continuously generate a large friction force to block The operator continues to push the cart at a dangerous speed.
  • the friction element 3 and the pressing element 4 first enter the first contact position to restrict the rotation of the first rotating shaft 51 (ie, the rotating wheel 2 cannot be rotated in the horizontal direction at this time, only in the vertical direction)
  • the direction scrolls, and then enters the second contact position to restrict the rotation of the first shaft 51 and the rolling of the wheel 2 into a full "brake" state.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Handcart (AREA)

Abstract

本申请提供一种用于手推车的脚轮，包括：通过第一转轴和外部元件枢转连接的壳体；一部分位于所述壳体内，另一部分伸出所述壳体的转动轮；设置于所述转动轮上的标记元件；设置于所述第一转轴内且能够被所述标记元件引发以产生电信号的传感器；所述转动轮每旋转一圈，所述标记元件引发所述传感器产生一次电信号。此外，本申请还提供了一种采用该脚轮的手推车。该脚轮和手推车转动轮的转数可以累计计数，可精准统计每小时、每天、每个周期的手推车的行程总数。并且速度检测单元能够记录单位时间内转动轮的转数以获取速度值。

Description

用于手推车的脚轮和手推车 技术领域
本发明涉及手推车领域，特别涉及用于手推车的脚轮和带有电子设备的手推车。
背景技术
目前市场上常见的手推车均为采用人工干预的方法进行驻车，其存在着一些安全隐患。以机场、医院、仓库或超市的手推车为例，它们不能够在坡面上根据坡面角度进行自主刹车，特别容易因为操作不慎造成翻车或溜车，具有碰上周围的人或物的风险。再者，现有的手推车在管制区域外仍然能够使用，因此造成遗失或丢弃。此外，现有的带有电子设备的手推车，不能够准确的计算出当前地点至目的地的时间，更无法控制手推车的推行速度。
因此，当前特别需要提供一种更为智能、更为安全可靠的手推车。
发明内容
鉴于现有技术中存在的问题，本发明提供一种用于手推车的脚轮，包括：
通过第一转轴和外部元件枢转连接的壳体；
一部分位于所述壳体内，另一部分伸出所述壳体的转动轮；
设置于所述转动轮上的标记元件；
设置于所述第一转轴内且能够被所述标记元件引发以产生电信号的传感器；
所述转动轮每旋转一圈，所述标记元件引发所述传感器产生一次电信号。
在本发明的一些实施方式中，所述的用于手推车的脚轮，包括：
设置于所述壳体内的弹性的摩擦元件；
设置于所述壳体内用于挤压所述摩擦元件以使其形变的挤压元件，所述挤压元件和所述第一转轴连接；
所述挤压元件和所述摩擦元件具有非接触位置、第一接触位置和第二接触位置；
当二者处于非接触位置时，所述摩擦元件凭借自身弹性保持原始状态；
当二者处于第一接触位置时，所述摩擦元件接触所述转动轮，以使所述第一转轴不能旋转，所述转动轮能够滚动；
当二者处于第二接触位置时，所述摩擦元件接触所述转动轮，以使所述第一转轴不能旋转，所述转动轮不能滚动。
本发明提供的手推车脚轮包括摩擦元件和挤压元件，上述两个元件具有非接触位置、第一接触位置和第二接触位置，进而通过上述三个位置为摩擦元件和转动轮之间提供无摩擦力、有较小的第一摩擦力和较大的第二摩擦力三种状态。该手推车脚轮能够根据设定需要产生第一摩擦力和第二摩擦力，以实现先限制转动轮在水平方向的旋转，再限制转动轮在竖直方向的滚动。
在本发明的一些实施方式中，所述第一转轴的一端伸入至所述壳体内；所述挤压元件套设于所述第一转轴位于壳体内的一端上，且能够随着所述第一转轴的转动在竖直方向上直线运动。
在本发明的一些实施方式中，所述摩擦元件包括：
固定地设置于所述壳体内的第二转轴；
能够沿所述第二转轴转动的摩擦片，所述摩擦片具有用于和所述挤压元件接触的第一部分、用于和所述转动轮接触的第二部分以及用于抵靠在所述壳体内壁上的弹性的第三部分；
当所述摩擦元件和所述挤压元件处于所述非接触位置时，所述挤压元件未和所述第一部分接触，所述转动轮未和所述第二部分接触，所述第三部分凭借自身弹性保持原始状态；
当所述摩擦元件和所述挤压元件处于所述第一接触位置或所述第二接触位置时，所述挤压元件和所述第一部分接触，所述转动轮和所述第二部分接触以产生第一或第二摩擦力，所述第三部分产生变形。
在本发明的一些实施方式中，所述第一部分和所述第三部分位于所述第二转轴的上方，所述第二部分位于所述第二转轴的下方。
在本发明的一些实施方式中，所述标记元件为布置于所述转动轮的胎面内的永磁块；所述传感器为磁感应探针。
本发明还提供了一种手推车，包括：
车体；
设置于所述车体底部的如上所述的任一种脚轮；
能够根据单位时间内所述标记元件引发所述传感器产生电信号的次数以获取速度值的速度检测单元。
因此，转动轮的转数可以累计计数，可精准统计每小时、每天、每个周期的手推车的行程总数。并且速度检测单元能够记录单位时间内转动轮的转数以获取速度值。
在本发明的一些实施方式中，所述的手推车包括：
设置于所述车体上的用于获取手推车当前位置信息的位置检测单元；
能够根据当前位置信息和所选择的目的地预设行进路径的控制单元，所述控制单元能够根据所述行进路径和所述速度值计算所需时间；
当所述位置检测单元检测到的当前位置信息偏离所述行进路径，所述速度检测单元停止获取速度值，待所述控制单元重新规划行进路径后继续获取速度值。
以实时有效速度为依据，提供由当前地点到目的地的动态时间，方便旅客控制推行速度及正确推行方向
在本发明的一些实施方式中，当所述位置检测单元检测到的当前位置信息偏离预设行进路线超过预设角度时，所述速度检测单元停止获取速度值，待所述控制单元重新规划行进路径后继续获取速度值。
在本发明的一些实施方式中，当所述速度检测单元获取的转速值大于或等于第一预设值时，所述控制单元控制所述挤压元件和所述摩擦元件在所述非接触位置和所述第二接触位置多次变换；当所述速度检测单元获取的转速值大于或等于第二预设值时，所述控制单元控制所述挤压元件和所述摩擦元件进入并保持在所述第二接触位置，所述第二预设值大于所述第一预设值。
为了使得使用者遵守推行速度，保证人身和财物安全，可以设定第一预设速度值和第二预设速度值，当手推车的推行速度达到第一预设速度值时，手推车先采取不断“点刹”(在非接触位置和第二接触位置来回变换)的方式提醒使用者，当使用者忽略提示，继续以高速推行且达到第二预设速度值时，手推车立刻进入“刹紧”状态，以阻止使用者继续推行。
附图说明
图1为本发明一实施方式的用于手推车的脚轮的结构示意图；
图2为本发明一实施方式的用于手推车的脚轮的标记元件和传感器的安装示意图；
图3为本发明另一实施方式的用于手推车的脚轮的爆炸图；
图4为本发明另一实施方式的用于手推车的脚轮的内部结构示意图；
图5为本发明一实施方式的用于手推车的脚轮的摩擦元件的结构示意图；
图6为本发明一实施方式提供的手推车的示意图。
具体实施方式
为了使发明的目的、技术方案和优点更加清楚，下面结合附图和具体实施例对发明作进一步详细的说明。虽然附图中显示了公开示例性实施例，然而应当理解，可以以各种形式实现本发明而不应被这里阐述的实施例所限制。相反，提供这些实施例是为了能够更透彻的理解本发明，并且能够将本发明的范围完整的传达给本领域的技术人员。
如图1和图2所示，本发明一实施方式提供了一种用于手推车的脚轮，包括固定板1、壳体2、转动轮3、标记元件4以及传感器5。
固定板1和壳体2通过第一转轴6枢转连接，以使得壳体2能够相对于固定板1在平面内360°旋转。壳体2呈半封闭结构，转动轮3的轮心铰接于壳体1内，转动轮3的一部分位于壳体1内，另一部分伸出壳体1，转动轮3可以相对于壳体2转动。标记元件4设置于转动轮3上，传感器5设置于第一转轴6内且能够被标记元件4引发以产生电信号。转动轮2每旋转一圈，标记元件4引发传感器5产生一次电信号。
其中，固定板1是可以省略的，第一转轴6可以直接和外部元件枢转连接。
具体而言，标记元件4为布置于转动轮2的胎面内的永磁块。传感器7为设置于第一转轴6内部的磁感应探针。磁感应探针的电路连接线同样可以设置在第一转轴6内部，进而避免了连接线发生缠绕。
如图3和图4所示，在本发明的一些实施方式中，用于手推车的脚轮还包括弹性的摩擦元件7和挤压元件8。摩擦元件7设置于壳体2内临近转动轮3的位置。挤压元件8同样设置于壳体2内，其用于压迫摩擦元件7产生形变。挤压元件8和摩擦元件7具有非接触位置、第一接触位置和第二接触位置，当二者处于非接触位置时，摩擦元件7凭借自身弹性保持原始状态；当二者处于第一接触位置时，摩擦 元件7接触转动轮2，以使第一转轴6不能旋转，转动轮2能够滚动；当二者处于第二接触位置时，摩擦元件7接触转动轮2，以使第一转轴6不能旋转，转动轮2不能滚动。
继续参照图3和图4，在本发明的一些实施方式中，第一转轴6的一端伸入至壳体2内；挤压元件8套设于第一转轴6位于壳体2内的一端上，且能够随着第一转轴6的转动在竖直方向上直线运动，类似于螺钉和螺母的关系。随着第一转轴6的转动，挤压元件8和摩擦元件7先进入第一接触位置，随着第一转轴6的继续转动，挤压元件8和摩擦元件7进入第二接触位置。
参照图5所示，在本发明的一些实施方式中，摩擦元件7包括固定地设置于壳体2内的第二转轴71、能够沿第二转轴71转动的摩擦片72。摩擦片72具有用于和挤压元件8接触第一部分721、用于和转动轮3接触的第二部分722、以及用于抵靠在壳体2内壁上的弹性的第三部分723。当摩擦元件7和挤压元件8处于非接触位置时，挤压元件8未和第一部分721接触，转动轮3未和第二部分722接触，第三部分723凭借自身弹性保持原始状态。当摩擦元件7和挤压元件8处于第一接触位置或第二接触位置时，挤压元件8和第一部分721接触，转动轮3和第二部分722接触以产生第一或第二摩擦力，第三部分723产生变形。
更进一步地，第一部分721和第三部分723位于第二转轴71的上方，第二部分722位于第二转轴71的下方，因此三者实际上组成了如图5所示的杠杆机构。
参照图6所示，本发明还提供了一种手推车，该手推车采用了上述的任何一种脚轮。此外，还包括车体和设置于车体上的能够根据单位时间内标记元件引发传感器产生电信号的次数以获取速度值的速度检测单元。
在本发明的一些实施方式中，该手推车还包括设置于所述车体上的用于获取手推车当前位置信息的位置检测单元和控制单元。所述控制单元能够根据当前位置信息和所选择的目的地预设行进路径，所述控制单元能够根据所述行进路径和所述速度值计算所需时间。当位置检测单元检测到的当前位置信息偏离行进路径，速度检测单元停止获取速度值，待控制单元重新规划行进路径后继续获取速度值。
具体而言，可以设定一个偏离角度a(a≤45°)，当位置检测单元检测到的当前位置信息偏离预设行进路线超过预设角度a时，速度检测单元停止获取速度值，待控制单元重新规划行进路径后继续获取速度值。
当速度检测单元获取的转速值大于或等于第一预设值时，控制单元控制挤压元件8和摩擦元件7在非接触位置和第二接触位置多次变换。当速度检测单元获取的转速值大于或等于第二预设值时，控制单元控制挤压元件8和摩擦元件7进入第二 接触位置，第二预设值大于第一预设值。举例来说，第一预设值为3米/秒，第二预设值为3.5米/秒，当推行速度大于或者等于3米/秒时，控制单元控制挤压元件8和摩擦元件7在非接触位置和第二接触位置多次变换，即控制单元控制摩擦元件8和转动轮之间以“点刹”的方式产生小摩擦力，以提醒操作者已经超出速度限制。当推行速度大于或者等于3.5米/秒时，控制单元控制挤压元件8和摩擦元件7进入第二接触位置，即控制单元控制摩擦元件7和转动轮之间持续地产生大摩擦力，以阻止操作者继续以危险速度推行手推车。
本领域技术人员应当能够理解，摩擦元件3和挤压元件4先要进入第一接触位置以限制第一转轴51的转动(即此时转动轮2不能够在水平方向旋转，仅能够在竖直方向滚动)，再进入到第二接触位置以限制第一转轴51的旋转和转动轮2的滚动，进入完全的“刹紧”状态。
最后应说明的是，以上实施例仅用以说明本发明的技术方案而非限制性的。尽管参照实施例对本发明进行了详细说明，但本领域的普通技术人员应当理解，对本发明的技术方案进行修改或者等同替换，都不脱离本发明技术方案的精神和范围，其均应涵盖在本发明的权利要求范围当中。

Claims (10)

  1. 用于手推车的脚轮，其特征在于，包括：
    通过第一转轴和外部元件枢转连接的壳体；
    一部分位于所述壳体内，另一部分伸出所述壳体的转动轮；
    设置于所述转动轮上的标记元件；
    设置于所述第一转轴内且能够被所述标记元件引发以产生电信号的传感器；
    所述转动轮每旋转一圈，所述标记元件引发所述传感器产生一次电信号。
  2. 根据权利要求1所述的用于手推车的脚轮，其特征在于，包括：
    设置于所述壳体内的弹性的摩擦元件；
    设置于所述壳体内用于挤压所述摩擦元件以使其形变的挤压元件，所述挤压元件和所述第一转轴连接；
    所述挤压元件和所述摩擦元件具有非接触位置、第一接触位置和第二接触位置；
    当二者处于非接触位置时，所述摩擦元件凭借自身弹性保持原始状态；
    当二者处于第一接触位置时，所述摩擦元件接触所述转动轮，以使所述第一转轴不能旋转，所述转动轮能够滚动；
    当二者处于第二接触位置时，所述摩擦元件接触所述转动轮，以使所述第一转轴不能旋转，所述转动轮不能滚动。
  3. 根据权利要求2所述的用于手推车的脚轮，其特征在于：
    所述第一转轴的一端伸入至所述壳体内；
    所述挤压元件套设于所述第一转轴位于壳体内的一端上，且能够随着所述第一转轴的转动在竖直方向上直线运动。
  4. 根据权利要求3所述的用于手推车的脚轮，其特征在于，所述摩擦元件包括：
    固定地设置于所述壳体内的第二转轴；
    能够沿所述第二转轴转动的摩擦片，所述摩擦片具有用于和所述挤压元件接触的第一部分、用于和所述转动轮接触的第二部分以及用于抵靠在所述壳体内壁上的弹性的第三部分；
    当所述摩擦元件和所述挤压元件处于所述非接触位置时，所述挤压元件未和所述第一部分接触，所述转动轮未和所述第二部分接触，所述第三部分凭借自身弹性 保持原始状态；
    当所述摩擦元件和所述挤压元件处于所述第一接触位置或所述第二接触位置时，所述挤压元件和所述第一部分接触，所述转动轮和所述第二部分接触以产生第一或第二摩擦力，所述第三部分产生变形。
  5. 根据权利要求4所述的用于手推车的脚轮，其特征在于：
    所述第一部分和所述第三部分位于所述第二转轴的上方，所述第二部分位于所述第二转轴的下方。
  6. 根据权利要求5所述的用于手推车的脚轮，其特征在于：
    所述标记元件为布置于所述转动轮的胎面内的永磁块；
    所述传感器为磁感应探针。
  7. 手推车，其特征在于，包括：
    车体；
    设置于所述车体底部的如权利要1～6中任一项所述的脚轮；
    能够根据单位时间内所述标记元件引发所述传感器产生电信号的次数以获取速度值的速度检测单元。
  8. 根据权利要求7所述的手推车，其特征在于，包括：
    设置于所述车体上的用于获取手推车当前位置信息的位置检测单元；
    能够根据当前位置信息和所选择的目的地预设行进路径的控制单元，所述控制单元能够根据所述行进路径和所述速度值计算所需时间；
    当所述位置检测单元检测到的当前位置信息偏离所述行进路径，所述速度检测单元停止获取速度值，待所述控制单元重新规划行进路径后继续获取速度值。
  9. 根据权利要求8所述的手推车，其特征在于：
    当所述位置检测单元检测到的当前位置信息偏离预设行进路线超过预设角度时，所述速度检测单元停止获取速度值，待所述控制单元重新规划行进路径后继续获取速度值。
  10. 根据权利要求7～9中任一项所述的手推车，其特征在于，包括：
    如权利要2～6中任一项所述的脚轮；
    当所述速度检测单元获取的转速值大于或等于第一预设值时，所述控制单元控制所述挤压元件和所述摩擦元件在所述非接触位置和所述第二接触位置多次变换；
    当所述速度检测单元获取的转速值大于或等于第二预设值时，所述控制单元控制所述挤压元件和所述摩擦元件进入并保持在所述第二接触位置，所述第二预设值大于所述第一预设值。
PCT/CN2018/083002 2017-04-14 2018-04-13 用于手推车的脚轮和手推车 WO2018188651A1 (zh)

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