US 2017/0282995 A1Published application

Vehicle height adjustment apparatus

AssigneeShowa Corporation

InventorsYosuke MURAKAMI, Hiroyuki MIYATA

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Abstract

A vehicle height adjustment apparatus according to one embodiment include a spring, a spring-length changing unit, a first valve, a control valve and a second valve. The spring-length changing unit changes a length of the spring in accordance with an amount of oil in a jack chamber that accommodates the oil. The first valve opens and closes a first communication path in which the oil supplied from a pump is oriented toward a reservoir chamber that stores the oil. The control valve opens and closes a discharge flow path oriented toward the reservoir chamber from a chamber that accommodates the oil to close the first valve. The second valve opens and closes a second communication path in which the oil supplied from the pump is oriented toward the jack chamber when the first valve is closed.

Claims5

Dependent claims

A vehicle height adjustment apparatus comprising:

a spring which has one end supported on a vehicle body side and the other end supported on a wheel side;
a changing device which changes a length of the spring in accordance with an amount of fluid in an accommodation chamber that accommodates the fluid;
a first valve which opens and closes a first flow path in which the fluid supplied from a pump is oriented toward a storage chamber that stores the fluid;
a back pressure adjustment valve which opens and closes a discharge flow path oriented toward the storage chamber from a back pressure chamber that accommodates the fluid that applies a force in a direction in which the first valve is closed to the first valve;
and
a second valve which opens and closes a second flow path in which the fluid supplied from the pump is oriented toward the accommodation chamber in a case where the first valve is in a closed state.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/464,897Filed 21 Mar 2017
Priority: JP 2016-07127031 Mar 2016
Published: 5 Oct 2017
Term ends: Not estimatedThe source records don’t support an estimate.

Classification23 codes

B62K 25/08
With telescopic fork, e.g. including auxiliary rocking arms: for front wheel
B60G 3/01
Resilient suspensions for a single wheel: the wheel being mounted for sliding movement, e.g. in or on a vertical guide
B60G 11/56
Not including leaf springs: having helical, spiral or coil springs, and also fluid springs
B60G 17/048
Fluid spring characteristics: with the regulating means inside the fluid springs

Family

US 10,370,057 B2Related patent
US 2017/0282995 A1This patent

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

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