Lawn mower

• US 9,480,201 B2
• Filed: 02/07/2013
• Issued: 11/01/2016
• Est. Priority Date: 02/10/2012
• Status: Active Grant

• Current Assignee: Honda Motor Co., Ltd. (Honda Motor Company)
• Original Assignee: Honda Motor Co., Ltd. (Honda Motor Company)
• Inventors: Maruyama, Shuhei, Kobayashi, Hiroshi, Shimada, Kenzo, Kimata, Ryuichi
• Primary Examiner(s): Pezzuto, Robert
• Assistant Examiner(s): NGUYEN, MAI T
• Application Number:
  US13/761,572
• Publication Number:
  US 20130205736A1
• Time in Patent Office: 1,363 Days
• Field of Search: 56/175, 562/55, 562/95, 56D/IG.19, 56D/IG.20
• US Class Current: 1/1
• CPC Class Codes: A01D 34/008 for automated or remotely controlled operation
• CPC Class Codes: A01D 34/73 Cutting apparatus
• CPC Class Codes: A01D 34/736 Flail type
• CPC Class Codes: A01D 34/78 electric
• CPC Class Codes: A01D 34/82 Other details
• CPC Class Codes: B60L 1/003 to auxiliary motors, e.g. for pumps, compressors
• CPC Class Codes: B60L 15/2036 Electric differentials, e.g. for supporting steering vehicles
• CPC Class Codes: B60L 2200/40 Working vehicles
• CPC Class Codes: B60L 2210/30 AC to DC converters
• CPC Class Codes: B60L 2220/44 Wheel Hub motors, i.e. integrated in the wheel hub
• CPC Class Codes: B60L 2240/12 Speed
• CPC Class Codes: B60L 2240/22 Yaw angle
• CPC Class Codes: B60L 2240/421 Speed
• CPC Class Codes: B60L 2240/423 Torque
• CPC Class Codes: B60L 2240/461 Speed
• CPC Class Codes: B60L 2240/547 Voltage
• CPC Class Codes: B60L 2240/549 Current
• CPC Class Codes: B60L 2250/16 by display
• CPC Class Codes: B60L 2260/28 Four wheel or all wheel drive
• CPC Class Codes: B60L 2260/32 Auto pilot mode
• CPC Class Codes: B60L 3/04 : Cutting off the power supply under fault conditions protective devices and circuit arrangements in general H01H; H02H
• CPC Class Codes: B60L 50/52 : characterised by DC-motors
• CPC Class Codes: B60L 50/66 : Arrangements of batteries
• CPC Class Codes: B60L 53/14 : Conductive energy transfer
• CPC Class Codes: B60L 53/30 : Constructional details of charging stations
• CPC Class Codes: B60L 53/35 : Means for automatic or assisted adjustment of the relative position of charging devices and vehicles
• CPC Class Codes: B60L 58/12 : responding to state of charge [SoC]
• CPC Class Codes: Y02T 10/64 : Electric machine technologies in electromobility
• CPC Class Codes: Y02T 10/70 : Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 : Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 10/72 : Electric energy management in electromobility
• CPC Class Codes: Y02T 90/12 : Electric charging stations
• CPC Class Codes: Y02T 90/14 : Plug-in electric vehicles

Abstract

In a lawn mower for mowing lawns on a ground having a drive shaft adapted to transmit a rotational driving force of a operating motor (prime mover), three blades and a connecting member having a blade disk adapted to connect the blades with the drive shaft, a fan is integrally formed at the connecting member. The blades are attached to the connecting member at a circumference of the connecting member and to be movable relative to the connecting member in a radial direction of the connecting member.

Claims

1. A lawn mower for mowing lawns on a ground having a drive shaft adapted to transmit a rotational driving force of a prime mover, a blade and a connecting member adapted to connect the blade with the drive shaft,

wherein:

a fan is integrally formed at the connecting member, the fan including a fan blade disposed above a substantially rectangular-shaped opening defined in the connecting member by four side edges, a base of the fan blade being connected to the connecting member at three of the four side edges defining the opening,

the connecting member has a disk-like shape, and a long hole is bored in the connecting member,

the blade has a substantially disk-like shape, a bolt hole being bored in a center of the blade, the blade being attached to the connecting member using a nut portion and a bolt inserted into the long hole and the bolt hole so that the blade is movable relative to the connecting member in a radial direction of the connecting member along the long hole, the long hole being extended along the base of the fan blade and disposed beside the opening, and

a spring member is provided at the connecting member, one end of the spring member being engaged with the bolt and another end being fixed on an outer periphery of the connecting member, the spring member biasing the bolt and the blade toward a periphery of the connecting member along the long hole.

2. The lawn mower according to claim 1, wherein the blade consists of a plurality of blades that are attached at a circumference of the connecting member.

3. The lawn mower according to claim 1, wherein the drive shaft, blade and connecting member are mounted on an operating vehicle body adapted to be controlled to run about in an operating area to perform an operation using the blade.

4. The lawn mower according to claim 1, wherein the long hole is elongated in a radial direction of the connecting member.

5. The lawn mower according to claim 4, wherein the other end of the spring member is fixed at a first position on the outer periphery of the connecting member which is spaced from a second position on the outer periphery of the connecting member which intersects with a center line of the long hole which extends in the radial direction along a radial length of the long hole through a center of the long hole.