IP Library Granted Patent US 9,288,942
Granted Patent B2
US 9,288,942 · App. 13/501,195 · Granted Mar 22, 2016

Electric riding mower having air-cooled chassis and pivotable protective cowling

Inventors: Kazuma Moriguchi (Osaka, JP); Shinichi Motegi (Osaka, JP); Keiji Matsumoto (Osaka, JP); Mitsuhiro Nakagaki (Osaka, JP); Tomoyuki Ebihara (Osaka, JP)
Assignee: YANMAR CO., LTD.
A01D69/02A01D67/00B60L1/003B60L3/0046B60L3/04B60L11/1803B60L11/1816B60L11/1866B60L2200/22B60L2220/42B60L2220/44B60L2240/421B60L2250/16Y02T10/648Y02T10/7005Y02T10/7061Y02T90/14
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Quick Facts
Patent No.
US 9,288,942
App. No.
13/501,195
Granted
Mar 22, 2016
Kind
B2
Abstract

An electric riding mower efficiently cools a motor driver. The mower includes two running motors 16 independently driving paired rear tires 13 ; a mower blade mowing grass by being rotated; a mowing motor 15 rotating the mower blade; a battery 25 supplying electric power to the running motors 16 and the mowing motor 15 ; and a mower-motor driver MD controlling the rotational speed of the mowing motor 15 , wherein the mower-motor driver MD is disposed in a driver storage part on a front part of the mower, and a slit 33 SL taking in external air is disposed on a front surface of the driver storage part.

Claims (20)

1. An electric riding mower comprising:

two running motors independently driving paired driving wheels;

a mower blade mowing grass by being rotated;

a mowing motor rotating the mower blade;

a battery supplying electric power to the running motors and the mowing motor; and

a mower-motor driver controlling the rotational speed of the mowing motor, the mower-motor driver being disposed in a driver storage part on a front part of the mower;

an air intake part taking in external air is disposed on a front surface of the driver storage part;

a chassis;

a cowling covering the entire chassis from above;

an operator's seat; and

a protective frame covering the battery from above for protection,

wherein

a cowling pivot support point allowing the cowling to pivot above the chassis is disposed on a front part of the mower,

a step configured to place feet of an operator seated in the operator's seat is disposed on the cowling,

a step support panel supporting the step from below is fixed to the chassis,

a damper supporting the opening/closing of the cowling is interposed between a back side of the cowling and the protective frame,

a frame-damper connecting device is fixed to the protective frame to pivotably fix one end of the damper, and

a cowling-damper connecting device is fixed to the back side of the cowling to pivotably fix the other end of the damper, and

wherein said battery includes a plurality of the batteries, the batteries being disposed horizontally on a rear part of the chassis.

2. The electric riding mower according to claim 1 , wherein the damper comprises two dampers disposed side by side in the width direction of the mower.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 11, 2012
From: MORIGUCHI, KAZUMA; MOTEGI, SHINICHI; MATSUMOTO, KEIJI; NAKAGAKI, MITSUHIRO; EBIHARA, TOMOYUKI
To: YANMAR CO., LTD.
Reel/Frame 028026/0051 →
Priority Claims (4)
JP 2010-044481 · Mar 1, 2010 · national
JP 2010-052855 · Mar 10, 2010 · national
JP 2010-053200 · Mar 10, 2010 · national
JP 2010-057015 · Mar 15, 2010 · national
Continuity (1)
Related Publication 20120186887A1 · Jul 26, 2012