US 11,027,674 B2Granted

Construction machine

AssigneeHitachi Construction Machinery Co., Ltd.

InventorsTomoya Murazumi, Takenori Hiroki, Hisashi Tago, Hironori Itou

Life of this patent

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Abstract

A plus-side main connection line (17) connects electrical equipment (11), (12) to a plus terminal (16A) of a battery (16). A plus-side isolating switch (18) is provided in the plus-side main connection line (17) to connect or disconnect the electrical equipment (11), (12) and or from the plus terminal (16A) of the battery (16). A plus-side auxiliary connection line (20) connects a communication terminal (15) to the plus terminal (16A) of the battery (16) in a position upstream of the plus-side isolating switch (18). A minus-side main connection line (22) connects a minus terminal (16B) of the battery (16) to ground. A minus-side isolating switch (23) is provided in the minus-side main connection line (22) to connect or disconnect the minus terminal (16B) of the battery (16) and or from the ground.

Claims5

Dependent claims

A construction machine comprising:

an electrical equipment installed in a vehicle body;
a communication terminal for transmitting information of the vehicle body to a server;
and
a battery for supplying power to the electrical equipment and the communication terminal, characterized in that:
the construction machine further comprises:
a plus-side main connection line for connecting the electrical equipment and a plus terminal of the battery;
a plus-side isolating switch provided on the plus-side main connection line for connecting or disconnecting the electrical equipment to or from the plus terminal of the battery;
a key switch positioned at a downstream side of the plus-side isolating switch and is connected in series to the plus-side isolating switch for connecting or disconnecting the electrical equipment to or from the plus terminal of the battery;
a plus-side auxiliary connection line positioned at an upstream side of the plus-side isolating switch for connecting the communication terminal and the plus terminal of the battery;
a minus-side main connection line for connecting a minus terminal of the battery to ground;
and
a minus-side isolating switch provided on the minus-side main connection line for connecting or disconnecting the minus terminal of the battery to or from the ground.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/643,613Filed 27 Nov 2018
Priority: JP JP2017-24057415 Dec 2017
Published: US 2020/0207288 A12 Jul 2020
Granted: 8 Jun 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification15 codes

B60R 16/02
Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits…:…
B60R 25/403
Features of the power supply for the anti-theft system, e.g. anti-theft batteries, back-up power supply or means to save battery power: power…
B60R 16/03
Electric constitutive elements: for supply of electrical power to vehicle subsystems or for
B60R 25/045
Operating on the propulsion system, e.g. engine or drive motor: by limiting or cutting the electrical supply to the propulsion unit

Family

US 2020/0207288 A1Pre-grant publication · published 2 Jul 2020
US 11,027,674 B2This patent

From the US filing history. Foreign family members aren’t listed.

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