WO2011044803A1 - Charging socket for intelligent mower and intelligent mower - Google Patents

Charging socket for intelligent mower and intelligent mower Download PDF

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Publication number
WO2011044803A1
WO2011044803A1 PCT/CN2010/076872 CN2010076872W WO2011044803A1 WO 2011044803 A1 WO2011044803 A1 WO 2011044803A1 CN 2010076872 W CN2010076872 W CN 2010076872W WO 2011044803 A1 WO2011044803 A1 WO 2011044803A1
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WO
WIPO (PCT)
Prior art keywords
charging
intelligent
lawn mower
charging stand
mower
Prior art date
Application number
PCT/CN2010/076872
Other languages
French (fr)
Chinese (zh)
Inventor
钱兴桂
Original Assignee
嘉兴亚特园林机械研究所
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Publication date
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Publication of WO2011044803A1 publication Critical patent/WO2011044803A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters
    • A01D34/006—Control or measuring arrangements
    • A01D34/008—Control or measuring arrangements for automated or remotely controlled operation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/24—Electrodes for alkaline accumulators
    • H01M4/32—Nickel oxide or hydroxide electrodes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the utility model relates to an intelligent lawn mower charging seat and an intelligent lawn mower.
  • the intelligent lawn mower charging structure commonly used in the market the charging contact is installed at the front end of the intelligent lawn mower, and matches the charging contact on the side of the intelligent lawn mower charging seat, because the charging contact of the intelligent lawn mower is at the front end, It requires a lot of space, and in order to fully contact the contacts on the charging stand, the intelligent mower has a great impact on the charging stand, and the charging stand is easily damaged.
  • One technical problem to be solved by the utility model is to provide a smart lawn mower charging seat, which is used for charging the intelligent lawn mower, and has the advantages of small occupied space, simple structure and low cost.
  • a smart mower charging stand comprising a charging stand panel and a charging seat circuit, characterized in that: a charging output is arranged on the upper surface of the rear end of the charging stand panel The point is connected to the cradle circuit.
  • the charging output point includes a positioning structure and a first metal contact fixed to the positioning structure.
  • the positioning structure comprises two positioning platforms disposed on the charging stand panel and a positioning groove disposed between the two positioning platforms.
  • the first metal contact is two curved metal sheets having convex arcs, and the curved metal sheets are respectively exposed and fixed on the rear portions of the two positioning platforms and connected to the charging base circuit.
  • the positioning structure further comprises two buffer columns, the buffer columns are respectively disposed on two sides of the last end of the charging stand panel, and the shape formed by the two buffer columns blocks the shape of the head of the intelligent mower.
  • the charging stand panel further has a guiding slot, and the guiding slot is disposed in front of the positioning slot Description
  • the charging stand panel is further provided with two guide rails for walking and positioning the rear wheel of the intelligent mower, the guide rails are respectively disposed on two sides of the guiding slot, and the anti-slip belt is disposed at the entrance of the guiding rail
  • the utility model also provides an intelligent lawn mower that is used in combination with the above-mentioned intelligent lawn mower charging base.
  • the charging mower is disposed under the base of the intelligent lawn mower to be in contact with the charging output point on the charging stand panel.
  • the charging input point includes a second metal contact that is in contact with the first metal contact, the second metal contact is two u-shaped metal pieces, and the U-shaped metal piece is sealed.
  • the downward bulge is placed on the front side of the front wheel of the intelligent mower and connected to the intelligent mower circuit.
  • the charging output point of the charging base is installed on the upper surface of the charging base, and the charging input point is installed under the intelligent lawn mower base.
  • the walking to the guiding rail The smart mower starts to charge after the charging input point on the intelligent mower contacts the charging output point on the charging stand panel.
  • the contact mode of the two is tangent sliding rather than punching, and the contact is sufficient and charging.
  • the charging output point on the seat panel has no large impact force, is not easily damaged, and increases the service life.
  • FIG. 1 is a schematic view of an entity according to an embodiment of the present invention.
  • Figure 2 is a schematic view of the metal contact on the intelligent lawn mower of the embodiment shown in Figure 1;
  • Figure 3 is a schematic structural view of a metal contact under the base of the intelligent mower
  • Figure 4 is a schematic diagram of the physical structure of the intelligent mower when charging.
  • FIG. 1 and FIG. 2 are schematic diagrams showing the structure of an embodiment of the present invention, and an intelligent lawn mower charging Description
  • the charging stand includes a charging output point disposed on an upper surface of the rear end of the charging stand panel 1 and a charging stand circuit, and the charging output point includes two positioning platforms 12 disposed on the charging stand panel 1 and a setting
  • the positioning groove 13 between the positioning platforms 12 further has two arc-shaped metal sheets 11 having convex arcs, which are respectively exposed and fixed on the rear portions of the two positioning platforms 12 and connected to the charging base circuit.
  • Connected; buffer columns 17 are respectively disposed on two sides of the last end of the charging stand panel 1, and the two buffer columns 17 form an outer envelope of the smart mower 2 head shape, which is buffered against the lawn mower when the smart mower 2 is charged.
  • the charging force of the charging seat panel 1 forward and the longitudinal auxiliary contact contact positioning; the charging seat panel 1 also has a guiding groove 15, the guiding groove 15 is arranged in front of the positioning groove 13 and extends out of the charging seat panel 1
  • the front wheel 22 of the intelligent lawn mower 2 is restricted from walking in the guiding slot 15 to assist the intelligent lawn mower 2 to be positioned until it reaches the positioning slot 13, and the charging seat panel 1 is further provided with
  • the guide rails 14 for the rear positioning of the rear wheel 23 of the intelligent lawn mower are disposed on the two sides of the guide groove 15, respectively, and also assist the walking position of the intelligent lawn mower 2, and the guide rail 14 is provided with anti-slip on the front part of the charging seat panel 1.
  • the belt 16 increases the friction, so that the intelligent lawn mower 2 can travel to the charging stand panel 1.
  • two U-shaped metal pieces 21 are disposed under the base of the intelligent lawn mower 2, and the U-shaped metal piece 21 is downwardly convexly disposed on the smart
  • the front side of the front wheel 22 of the lawn mower 2 is connected to the intelligent lawn mower circuit.
  • the arc surface of the U-shaped metal piece 21 is in contact with the curved surface of the curved metal piece 11,
  • the contact is a tangential sliding contact with the arc line, so that the contact is good when charging, the circuit is smooth, and the arc-shaped metal piece 11 on the charging stand panel has no large impact force, is not easy to be damaged, and increases the service life;
  • the schematic diagram of the use of the utility model is shown, and the intelligent lawn mower 2 is closely matched with the charging seat panel 1 and has a compact structure.
  • the gravity of the head of the intelligent mower 2 is applied to the curved metal piece 1 1 by the U-shaped metal piece 21, so that the U-shaped metal piece 21 is in close contact with the metal piece 11.

Abstract

An intelligent cropper and a charging socket for the intelligent cropper are provided The charging socket for the intelligent cropper includes a charging socket circuit and a charging socket panel (1) whose upper surface is provided with charging output points The lower surface of the base of the intelligent cropper is provided with charging input points which can suitably contact with the charging output points on the charging socket panel (1) When the intelligent cropper needs charging, it walks onto the guide rails (14) of the charging socket, and the charging input points on the intelligent cropper fully contact with the charging output points on the charging socket panel (1) to begin to charge In this way, the charging output points on the charging socket panel are not terribly impacted and not easy to be damaged

Description

说 明 书  Description
一种智能割草机充电座及智能割草机  Intelligent mower charging stand and intelligent mower
技术领域  Technical field
本实用新型涉及一种智能割草机充电座及智能割草机。  The utility model relates to an intelligent lawn mower charging seat and an intelligent lawn mower.
背景技术  Background technique
现在市场上常用的智能割草机充电结构， 在智能割草机前端安装充电触点， 与智能割草机充电座侧面上的充电触点相配， 因为智能割草机的充电触点在前 端， 需要很大的空间， 且为了与充电座上的触点充分接触， 智能割草机对充电 座有很大的冲击力， 充电座容易损坏。  The intelligent lawn mower charging structure commonly used in the market, the charging contact is installed at the front end of the intelligent lawn mower, and matches the charging contact on the side of the intelligent lawn mower charging seat, because the charging contact of the intelligent lawn mower is at the front end, It requires a lot of space, and in order to fully contact the contacts on the charging stand, the intelligent mower has a great impact on the charging stand, and the charging stand is easily damaged.
实用新型内容  Utility model content
本实用新型所要解决的一个技术问题就是提供一种智能割草机充电座， 用 于智能割草机充电， 具有占用空间小， 结构简单， 成本低的优点。  One technical problem to be solved by the utility model is to provide a smart lawn mower charging seat, which is used for charging the intelligent lawn mower, and has the advantages of small occupied space, simple structure and low cost.
为了解决上述技术问题， 本实用新型采用如下技术方案： 一种智能割草机 充电座， 包括充电座面板以及充电座电路， 其特征在于： 在所述充电座面板后 端上表面设置有充电输出点与充电座电路相连。  In order to solve the above technical problem, the utility model adopts the following technical solutions: A smart mower charging stand, comprising a charging stand panel and a charging seat circuit, characterized in that: a charging output is arranged on the upper surface of the rear end of the charging stand panel The point is connected to the cradle circuit.
进一歩的， 所述充电输出点包括定位结构和固定在所述定位结构上的第一 金属触点。  Further, the charging output point includes a positioning structure and a first metal contact fixed to the positioning structure.
作为优选的， 所述定位结构包括设置在充电座面板上的两个定位平台和设 置在两个定位平台之间的定位槽。  Preferably, the positioning structure comprises two positioning platforms disposed on the charging stand panel and a positioning groove disposed between the two positioning platforms.
作为优选的， 所述第一金属触点为两个具有外凸圆弧的弧形金属片， 所述 弧形金属片分别裸露固定在两个定位平台后部上并与充电座电路相连。  Preferably, the first metal contact is two curved metal sheets having convex arcs, and the curved metal sheets are respectively exposed and fixed on the rear portions of the two positioning platforms and connected to the charging base circuit.
进一歩的， 所述定位结构还包括两根缓冲柱， 所述缓冲柱分别设置在充电 座面板的最后端的两侧， 两个缓冲柱形成的外形挡住智能割草机头部外形。  Further, the positioning structure further comprises two buffer columns, the buffer columns are respectively disposed on two sides of the last end of the charging stand panel, and the shape formed by the two buffer columns blocks the shape of the head of the intelligent mower.
进一歩的， 所述充电座面板上还有导向槽， 所述导向槽设置在定位槽前方 说 明 书 Further, the charging stand panel further has a guiding slot, and the guiding slot is disposed in front of the positioning slot Description
并延伸出充电座面板的前端。 And extend out the front end of the charging stand panel.
进一歩的， 所述充电座面板上还设置有两条供智能割草机后轮行走定位的 导轨， 所述导轨分别设置在导向槽两侧， 在所述导轨的入口处设置有防滑带 本实用新型还提供了一种与上述智能割草机充电座配合使用的智能割草 机， 所述智能割草机底座下方设置有充电输入点与所述充电座面板上的充电输 出点配合接触。  Further, the charging stand panel is further provided with two guide rails for walking and positioning the rear wheel of the intelligent mower, the guide rails are respectively disposed on two sides of the guiding slot, and the anti-slip belt is disposed at the entrance of the guiding rail The utility model also provides an intelligent lawn mower that is used in combination with the above-mentioned intelligent lawn mower charging base. The charging mower is disposed under the base of the intelligent lawn mower to be in contact with the charging output point on the charging stand panel.
进一步的， 所述充电输入点包括与所述第一金属触点接触的第二金属触点 进一歩的， 所述第二金属触点为两个 u型金属片， 所述 U型金属片封口向 下凸出设置在智能割草机的前轮的前方两侧并与智能割草机电路相连。  Further, the charging input point includes a second metal contact that is in contact with the first metal contact, the second metal contact is two u-shaped metal pieces, and the U-shaped metal piece is sealed. The downward bulge is placed on the front side of the front wheel of the intelligent mower and connected to the intelligent mower circuit.
采用上述技术方案后， 本实用新型具有如下优点： 充电座的充电输出点安 装在充电座上面板上， 智能割草机底座下面安装充电输入点， 当智能割草机需 要充电时， 行走到导轨上， 智能割草机上的充电输入点与充电座面板上的充电 输出点接触后智能割草机开始充电， 两者的接触方式为相切滑入式而不是冲压 撞击式， 接触充分且对充电座面板上的充电输出点没有大冲击力， 不容易损坏， 增加使用寿命。  After adopting the above technical solution, the utility model has the following advantages: The charging output point of the charging base is installed on the upper surface of the charging base, and the charging input point is installed under the intelligent lawn mower base. When the intelligent lawn mower needs to be charged, the walking to the guiding rail The smart mower starts to charge after the charging input point on the intelligent mower contacts the charging output point on the charging stand panel. The contact mode of the two is tangent sliding rather than punching, and the contact is sufficient and charging. The charging output point on the seat panel has no large impact force, is not easily damaged, and increases the service life.
附图说明  DRAWINGS
下面结合附图对本实用新型作进一步说明：  The utility model will be further described below with reference to the accompanying drawings:
图 1为本实用新型一种实施例的实体示意图；  1 is a schematic view of an entity according to an embodiment of the present invention;
图 2为图 1所示实施例与智能割草机上的金属触点的示意图；  Figure 2 is a schematic view of the metal contact on the intelligent lawn mower of the embodiment shown in Figure 1;
图 3为智能割草机底座下方金属触点的结构示意图；  Figure 3 is a schematic structural view of a metal contact under the base of the intelligent mower;
图 4为智能割草机充电时的实体示意图。  Figure 4 is a schematic diagram of the physical structure of the intelligent mower when charging.
具体实施方式  detailed description
如图 1、 2所示本实用新型一种实施例的结构示意图， 一种智能割草机充电 说 明 书 FIG. 1 and FIG. 2 are schematic diagrams showing the structure of an embodiment of the present invention, and an intelligent lawn mower charging Description
座，包括充电座面板 1、在所述充电座面板 1后端上表面设置的充电输出点以及 充电座电路， 所述充电输出点包括两个设置在充电座面板 1上的定位平台 12、 设置在定位平台 12之间的定位槽 13还有两个具有外凸圆弧的弧形金属片 11， 所述弧形金属片 11分别裸露固定在两个定位平台 12后部上并与充电座电路相 连；在充电座面板 1的最后端的两侧分别设置缓冲柱 17， 两个缓冲柱 17形成的 外形包络智能割草机 2头部外形,在智能割草机 2充电时缓冲抵抗割草机 2在充 电座面板 1 向前行走的冲力并纵向辅助触点接触定位； 所述充电座面板 1上还 有导向槽 15， 所述导向槽 15设置在定位槽 13前方并延伸出充电座面板 1的前 端， 所述智能割草机 2的前轮 22被限制在导向槽 15中行走，辅助智能割草机 2 定位， 直至行走到定位槽 13中， 所述充电座面板 1上还设置有两条供智能割草 机后轮 23行走定位的导轨 14， 所述导轨 14分别设置在导向槽 15两侧，同样辅 助智能割草机 2行走定位， 导轨 14在充电座面板 1前部设置有防滑带 16， 增加 摩擦， 便于智能割草机 2行走到充电座面板 1上。 The charging stand includes a charging output point disposed on an upper surface of the rear end of the charging stand panel 1 and a charging stand circuit, and the charging output point includes two positioning platforms 12 disposed on the charging stand panel 1 and a setting The positioning groove 13 between the positioning platforms 12 further has two arc-shaped metal sheets 11 having convex arcs, which are respectively exposed and fixed on the rear portions of the two positioning platforms 12 and connected to the charging base circuit. Connected; buffer columns 17 are respectively disposed on two sides of the last end of the charging stand panel 1, and the two buffer columns 17 form an outer envelope of the smart mower 2 head shape, which is buffered against the lawn mower when the smart mower 2 is charged. 2, the charging force of the charging seat panel 1 forward and the longitudinal auxiliary contact contact positioning; the charging seat panel 1 also has a guiding groove 15, the guiding groove 15 is arranged in front of the positioning groove 13 and extends out of the charging seat panel 1 The front wheel 22 of the intelligent lawn mower 2 is restricted from walking in the guiding slot 15 to assist the intelligent lawn mower 2 to be positioned until it reaches the positioning slot 13, and the charging seat panel 1 is further provided with The guide rails 14 for the rear positioning of the rear wheel 23 of the intelligent lawn mower are disposed on the two sides of the guide groove 15, respectively, and also assist the walking position of the intelligent lawn mower 2, and the guide rail 14 is provided with anti-slip on the front part of the charging seat panel 1. The belt 16 increases the friction, so that the intelligent lawn mower 2 can travel to the charging stand panel 1.
另外为了配合使用本实用新型， 如图 2、 3所示， 在智能割草机 2的底座下 方设置有两个 U型金属片 21，所述 U型金属片 21封口向下凸出设置在智能割草 机 2前轮 22的前方两侧并与智能割草机电路相连,在智能割草机 2充电时， U型 金属片 21的弧面与弧形金属片 11的弧面接触， 两者接触为相切滑入的弧面线 接触， 这样保证充电时接触良好， 电路畅通， 同时对充电座面板上的弧形金属 片 11没有大冲击力， 不容易损坏， 增加使用寿命； 如图 4所示本实用新型使用 情况示意图， 智能割草机 2与充电座面板 1紧密配合， 结构紧凑。  In addition, in order to cooperate with the utility model, as shown in FIG. 2 and FIG. 3, two U-shaped metal pieces 21 are disposed under the base of the intelligent lawn mower 2, and the U-shaped metal piece 21 is downwardly convexly disposed on the smart The front side of the front wheel 22 of the lawn mower 2 is connected to the intelligent lawn mower circuit. When the intelligent lawn mower 2 is charged, the arc surface of the U-shaped metal piece 21 is in contact with the curved surface of the curved metal piece 11, The contact is a tangential sliding contact with the arc line, so that the contact is good when charging, the circuit is smooth, and the arc-shaped metal piece 11 on the charging stand panel has no large impact force, is not easy to be damaged, and increases the service life; The schematic diagram of the use of the utility model is shown, and the intelligent lawn mower 2 is closely matched with the charging seat panel 1 and has a compact structure.
在智能割草机 2充电时， 智能割草机 2头部的重力由 U型金属片 21施加在 弧形金属片 1 1上， 使 U型金属片 21与金属片 11紧密接触。  When the intelligent mower 2 is charged, the gravity of the head of the intelligent mower 2 is applied to the curved metal piece 1 1 by the U-shaped metal piece 21, so that the U-shaped metal piece 21 is in close contact with the metal piece 11.

Claims

权 利 要 求 书  Claims
、 一种智能割草机充电座， 包括充电座面板 （1) 以及充电座电路， 其特征在 于： 在所述充电座面板 （1) 后端上表面设置有充电输出点与充电座电路相 连。 A smart lawn mower charging stand comprises a charging stand panel (1) and a charging stand circuit, characterized in that: a charging output point is arranged on the upper surface of the rear end of the charging stand panel (1) to be connected with the charging stand circuit.
、 根据权利要求 1所述的一种智能割草机充电座， 其特征在于： 所述充电输出 点包括定位结构和固定在所述定位结构上的第一金属触点 （11)。 A smart lawn mower charging stand according to claim 1, wherein: said charging output point comprises a positioning structure and a first metal contact (11) fixed to said positioning structure.
、 根据权利要求 2所述的一种智能割草机充电座， 其特征在于： 所述定位结构 包括设置在充电座面板 （1) 上表面的两个定位平台 （12) 和设置在两个定 位平台 （12) 之间的定位槽 （13)。 The intelligent lawn mower charging stand according to claim 2, wherein: the positioning structure comprises two positioning platforms (12) disposed on the upper surface of the charging stand panel (1) and disposed in two positioning positions. A positioning slot (13) between the platforms (12).
、 根据权利要求 2或 3所述的一种智能割草机充电座， 其特征在于： 所述第一 金属触点 （11) 为两个具有外凸圆弧的金属片， 所述金属片 （11)分别裸露 固定在两个定位平台 （12) 后部上并与充电座电路相连。 The intelligent lawn mower charging stand according to claim 2 or 3, wherein: the first metal contact (11) is two metal pieces having a convex arc, the metal piece ( 11) The bare parts are respectively fixed on the rear of the two positioning platforms (12) and connected to the charging base circuit.
、 根据权利要求 1、 2或 3所述的一种智能割草机充电座， 其特征在于： 所述 定位结构还包括两根缓冲柱 （17)， 所述缓冲柱 （17) 分别设置在充电座面 板 （1) 的最后端的两侧。 The intelligent lawn mower charging stand according to claim 1, 2 or 3, wherein: the positioning structure further comprises two buffer columns (17), and the buffer columns (17) are respectively set in charging Both sides of the rear end of the seat panel (1).
、 根据权利要求 1、 2或 3所述的一种智能割草机充电座， 其特征在于： 所述 充电座面板（1)上还有导向槽（15)， 所述导向槽（15)设置在定位槽（13) 前方并延伸出充电座面板 （1) 的前端。 A smart mower charging stand according to claim 1, 2 or 3, characterized in that: the charging stand panel (1) further has a guiding groove (15), and the guiding groove (15) is arranged The front end of the charging stand panel (1) extends in front of the positioning slot (13).
、 根据权利要求 1或 2所述的一种智能割草机充电座， 其特征在于： 所述充电 座面板（1)上还设置有两条供割草机后轮（23) 行走定位的导轨 （14)， 所 述导轨 （14) 分别设置在导向槽 （15) 两侧， 在所述导轨 （14) 的入口处设 置有防滑带 （16)。 The intelligent lawn mower charging base according to claim 1 or 2, wherein: the charging seat panel (1) is further provided with two guiding rails for walking and positioning the rear wheel (23) of the lawn mower (14), the guide rails (14) are respectively disposed on both sides of the guide groove (15), and an anti-slip belt (16) is disposed at an entrance of the guide rail (14).
、 一种智能割草机， 其特征在于： 在智能割草机 （2) 底座下方设置有充电输 入点与权利要求 1中所述充电座面板 （1) 上的充电输出点配合接触。 权 利 要 求 书 A smart lawn mower, characterized in that: a charging input point is arranged under the base of the intelligent lawn mower (2) in cooperation with a charging output point on the charging stand panel (1) according to claim 1. Claim
、 根据权利要求 8所述的一种智能割草机， 其特征在于： 所述充电输入点包括 与所述第一金属触点 （11) 接触的第二金属触点 （21)。A smart lawn mower according to claim 8, wherein: said charging input point comprises a second metal contact (21) in contact with said first metal contact (11).
0、 根据权利要求 9所述的一种智能割草机， 其特征在于： 所述第二金属触点 (21) 为两个 U型金属片， 所述 U型金属片 （21)封口向下凸出设置在智能 割草机 （2) 的前轮 （22) 的前方两侧并与智能割草机电路相连。 0. The intelligent lawn mower according to claim 9, wherein: the second metal contact (21) is two U-shaped metal pieces, and the U-shaped metal piece (21) is sealed downward. The bulge is placed on the front side of the front wheel (22) of the intelligent mower (2) and connected to the intelligent mower circuit.
2 2
PCT/CN2010/076872 2009-10-14 2010-09-14 Charging socket for intelligent mower and intelligent mower WO2011044803A1 (en)

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