US 8,770,636 B2Granted

Bumper

AssigneeAsteer Co., Ltd.

InventorKoji Shimotsu

Life of this patent

Estimating the term…

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Abstract

Providing a bumper absorbing large amount of impact energy with respect to both a light collision and a heavy collision, and preventing the reinforcement beam from bending and protruding backward at a portion where an obstacle collides and from displacing backward in this protruding state. Provided is a bumper for vehicles including a reinforcement beam made of metal and a pair of support members having a hollow cross section, protruding from a vehicle frame, and supporting the reinforcement beam therebetween. A quenched region is provide over a portion including a middle of the reinforcement beam. Unquenched portions are provided on the pair of connecting portions or a pair of adjacent portions inside the pair of connecting portions.

Claims4

Dependent claims

A bumper for vehicles comprising:

a reinforcement beam made of metal;
and
a pair of support members having a hollow cross section, protruding from a vehicle frame, and supporting the reinforcement beam therebetween;
wherein the reinforcement beam is provided with a pair of connecting portions to which the pair of support members is connected, the reinforcement beam is provided with a quenched region and unquenched portions, a mechanical strength of the unquenched portions is smaller than the mechanical strength of the pair of support members and the quenched region, the quenched region is provide over a portion including a middle of the reinforcement beam, the unquenched portions are provided on the pair of connecting portions or a pair of adjacent portions inside the pair of connecting portions, the unquenched portions are provided only over corners in a cross section of the reinforcement beam.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 14/011,485Filed 27 Aug 2013
Priority: JP 2012-18792828 Aug 2012
Published: US 2014/0062105 A16 Mar 2014
Granted: 8 Jul 2014
Term ends: Not estimatedThe source records don’t support an estimate.

Classification3 codes

B60R 19/18
Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects: characterised by…
B60R 2019/1813
Structural beams therefor, e.g. shock-absorbing: made of metal
B60R
Vehicle fittings and parts

Family

US 2014/0062105 A1Pre-grant publication · published 6 Mar 2014
US 8,770,636 B2This patent

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

Timeline

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