US 11,926,246 B2Granted

Traveling body system

AssigneesMurata Machinery, Ltd., National University Corporation Toyohashi University of Technology

InventorsMinoru Mizutani, Kazuhiro Ishikawa, Masafumi Hayakawa, Takashi Ohira, Naoki Sakai, Hiroki Kuniyoshi, Makoto Teramoto

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Abstract

In a local cart traveling system, a frame track includes first and second metal rails each with an L-shaped cross section and facing each other. A local cart is within the frame track, and includes a first electricity receiving tire and a second electricity receiving tire to travel on horizontal travel surfaces of the rails. A voltage supplier supplies an AC voltage to the travel surfaces, so that the first metal rail and a first electricity receiving tire define a first capacitor and the second metal rail and the second electricity receiving tire define a second capacitor. The local cart includes a power receiver to receive AC power, and a travel motor that receives power after the AC power is rectified. The frame track includes a connecting plate as an electrical insulator covering portions of the surfaces of vertical walls of the first metal rail and the second metal rail.

Claims5

Dependent claims

A traveling body system comprising:

a frame track including at least one metal rail, an electrical insulator disposed on a travel surface of the at least one metal rail, and two conductors, the two conductors being provided to the electrical insulator and supplied with an AC voltage;
a traveling body disposed within the frame track and provided with a first wheel and a second wheel, so as to travel on the two conductors;
and
a voltage supplier to supply an AC voltage to each of the two conductors, so that a first of the two conductors and the first wheel define a first capacitor and a second of the two conductors and the second wheel define a second capacitor;
wherein
the traveling body includes a power receiver to receive AC power from the first capacitor and the second capacitor, and a travel drive motor to directly or indirectly receive power after the AC power received by the power receiver is rectified;
and
the two conductors are parallel or substantially parallel to a gap in a width direction, and the AC power is differentially transmitted to the two conductors.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/628,047Filed 1 Jun 2018
Priority: JP 2017-1326256 Jul 2017
Published: US 2021/0138911 A113 May 2021
Granted: 12 Mar 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification15 codes

B60L 9/12
Fed from AC supply lines: with static converters
H10P 72/3202
Between different workstations: mechanical details, e.g. rollers or belts
B60L 5/38
Current collectors for power supply lines of electrically-propelled vehicles: for collecting current from conductor rails
B60L 9/00
Electric propulsion with power supply external to the vehicle