Automobile bodyshell frame structure
AssigneeMazda Motor Corporation
InventorsKatsunori Hanakawa, Mitsugi Fukahori, Kyousou Ishida, Yukio Yamamoto, Motoyasu Asakawa
Life of this patent
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Abstract
An automobile bodyshell frame structure includes a generally elongated first panel member, and a generally elongated second panel member having opposite side edge portions connected to the first panel member to define a hollow between the first and second panel members. A filler is disposed within a portion of a cross-section of the hollow between the first and second panel members. This filler is provided on an inner surface of one of the first and second panel members and has an average compressive strength equal to or greater than 4 Pa and/or a maximum bending strength equal to or greater than 10 MPa.
Claims17
An automobile bodyshell frame structure comprising:
- a generally elongated first panel member;
- a generally elongated second panel member having opposite side edge portions connected to the first panel member to define a hollow between the first and second panel members;
- and
- a filler disposed within a portion of a cross-section of the hollow between the first and second panel members, said filler being provided on an inner surface of one of the first and second panel members and having at least one of an average compressive strength equal to or greater than 4 MPa and a maximum bending strength equal to or greater than 10 MPa;
- and
- a generally elongated intermediate panel member intervening between the first and second panel members, and wherein the filler is filed in a closed volume delimited between the intermediate panel member and once of the first and second panel members.
An automobile bodyshell frame structure comprising:
- a generally elongated first panel member;
- a generally elongated second panel member having opposite side edge portions connected to the first panel member to define a hollow between the first and second panel members;
- an intermediate panel member interposed between the first and second panel members so as to divide the hollow into a first closed volume adjacent the first panel member and a second closed volume adjacent the second panel member;
- upper and lower dividing elements positioned on one of opposite surfaces of the intermediate panel member adjacent the first closed volume and spaced a distance from each other in a direction lengthwise of the frame structure, each of said dividing elements defining a respective gap between it and the first panel member;
- a filler expanded to fill up a portion of the first closed volume that is delimited between the upper and lower dividing elements with end portions of the filler filling up the gaps between, the upper and lower dividing elements and the first panel member, said filler when not expanded yet being retained in that portion of the first closed volume delimited between the upper and lower dividing elements.
An automobile bodyshell frame structure comprising:
- a generally elongated first panel member;
- a generally elongated second panel member having opposite side edge portions connected to the first panel, member to define a hollow between the first and second panel members;
- an intermediate panel member interposed between the first and second panel members so as to divide the hollow into a first closed volume adjacent the first panel member and a second closed volume adjacent the second panel member;
- a first filler expanded to fill up at least a portion of the first closed volume and having ends opposite to each other;
- and
- a second filler expanded within that portion of the first closed volume and held in abutment with each of the opposite ends of the first filler, said second filler having an expand ratio higher than that of the first filler.
Dependencies are inferred from the claim text.