Air bag lid reinforcing member and method for manufacturing same

Patent metadata

Field	Value
Publication number	US-11390237-B2
Application number	US-201917253713-A
Country	US
Kind code	B2
Filing date	Jun 20, 2019
Priority date	Jun 21, 2018
Publication date	Jul 19, 2022
Grant date	Jul 19, 2022

Abstract

An airbag lid reinforcing member includes a door part, a flange part, a leg part and a hinge member. The flange part surrounds an outer periphery of the door part. The leg part is arranged on the flange part. An inside surface of the leg part defines support ribs supporting the hinge member. The support ribs are arranged with a gap in a width direction of the leg part. A portion of the hinge member is buried in the flange part. In a region of the hinge member between a tip of each of the support ribs and an end surface of the flange part, at least an upper part in a thickness direction of the hinge member is exposed from the support ribs. A portion of the hinge member positioned between adjacent ones of the support ribs is exposed from the support ribs and the flange part.

First claim

The invention claimed is:

1. An airbag lid reinforcing member comprising:
a door part configured and arranged to open and close;
a flange part made of resin and surrounding an outer periphery of the door part;
a leg part made of resin arranged on a lower side of the flange part; and
a hinge part constituted by a hinge member connecting the flange part and the door part so that the door part opens and closes with respect to the flange part, the hinge member being a different member from the flange part wherein
an inside surface of the leg part defines a plurality of support ribs supporting the hinge member from a lower surface side of the hinge member, the support ribs being arranged with a gap between adjacent ones of the support ribs in a width direction of the leg part,
a first portion of the hinge member is buried in the flange part,
in each portion of the hinge member on the support ribs, in a region between a tip of each of the support ribs and an end surface of the flange part, at least an upper part in a thickness direction of the hinge member is exposed from the support ribs,
a lower part in the thickness direction of the hinge member is attached to a support part of each of the support ribs, the support part being an upper edge part of each of the support ribs, such that, during deployment of an airbag body, the lower part in the thickness direction of the hinge member is peeled from the support part of each of the support ribs, and a boundary part with an end surface of the flange part in the hinge member becomes a fulcrum for rotation, and
a second portion of the hinge member positioned between adjacent support ribs is exposed from the support ribs and the flange part.

2. The airbag lid reinforcing member according to claim 1 , wherein
the hinge member is a net.

3. The airbag lid reinforcing member according to claim 1 , wherein
the door part has a first door part placed on a vehicle front side with respect to a cleavage line, and a second door part placed on a vehicle rear side with respect to the cleavage line,
the hinge member has
a vehicle front hinge part connecting the first door part and the flange part, and
a vehicle rear hinge part connecting the second door part and the flange part,

the leg part is configured and arranged to support an airbag body so that a distance from a center position of a vehicle front-rear direction of the airbag body to the vehicle rear hinge part is longer than a distance from the center position to the vehicle front hinge part.

4. The airbag lid reinforcing member according to claim 1 , wherein
in each of the support ribs, an angle formed between an upper edge part in contact with the hinge member and an inside surface of a corresponding support rib is an obtuse angle.

5. A method for manufacturing an airbag lid reinforcing member including a door part configured and arranged to open and close, a flange part surrounding an outer periphery of the door part and a leg part arranged on a lower side of the flange part, the method comprising:
forming a hinge member in the flange part and the door part by insert molding using a mold for which a molding space is formed corresponding to the door part, the flange part, and the leg part,
the mold having
an upper mold for molding a top surface side of the door part and the flange part, and
a lower mold for molding a lower surface side of the door part and the flange part, and the leg part, the lower mold defining a plurality of recesses on a part for molding an inside surface of the leg part, the recesses being indented in a direction away from the flange part

gripping the hinge member between the upper mold and a part between adjacent recesses of the lower mold during the insert molding.

Assignees

• Marelli Corp

Inventors

• Kobayashi Yousuke

Classifications

• B60R21/215 Primary

  characterised by the covers for the inflatable member {(B60R21/2176 takes precedence)} · CPC title

• B29C45/0081

  of objects with parts connected by a thin section, e.g. hinge, tear line · CPC title

• B29C45/14631

  Coating reinforcements (fibre reinforcements B29C45/0005) · CPC title

• B29C2045/14122

  using fixed mould wall projections for centering the insert · CPC title

• B29L2031/3055

  Cars · CPC title