# US 2014/0191532 A1 · Shock absorbing member > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0191532 A1 - Document ID: US20140191532A1 - Status: Published application - Kind: A1 - Application number: 14/237,755 - Filed: 2012-08-07 - Published: 2014-07-10 - Earliest claimed: 2011-08-09 - Assignees: Nippon Steel & Sumitomo Metal Corporation - Inventors: Satoshi Hirose - Web page: https://patentgrep.com/patent/US20140191532A1 ## CPC - B60R 19/34: destroyed upon impact, e.g. one-shot type - B62D 21/152: {Front or rear frames} - F16F 7/12: using plastic deformation of members {(F16F9/30 takes precedence; yieldable means for mounting bumpers on vehicles B60R19/26; yieldable or collapsible steering columns B62D1/192)} - B62D 21/15: having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body (bumpers B60R19/02; shock absorbers in general F16F) - F16F 7/123: {Deformation involving a bending action, e.g. strap moving through multiple rollers, folding of members (F16F7/125, F16F7/128 take precedence)} - B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR - B62D: MOTOR VEHICLES; TRAILERS (steering, or guiding on a desired track, of agricultural machines or implements A01B69/00; wheels, castors, axles, increasing wheel adhesion B60B; vehicle tyres, tyre inflation or tyre changing B60C; connections between vehicles of a train or the like B60D; vehicles for use on rail and road, amphibious or convertible vehicles B60F; suspension arrangements B60G; heating, cooling, ventilating or other air treating devices B60H; windows, windscreens, non-fixed roofs, doors or similar devices, protective coverings for vehicles not in use B60J; propulsion plant arrangements, auxiliary drives, transmissions, controls, instrumentation or dashboards B60K; electric equipment or propulsion of electrically-propelled vehicles B60L; power supply for electrically-propelled vehicles B60M; passenger accommodation not otherwise provided for B60N; adaptations for load transportation or to carry special loads or objects B60P; arrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general B60Q; vehicles, vehicle fittings or vehicle parts not otherwise provided for B60R; servicing, cleaning, repairing, supporting, lifting, or manoeuvring, not otherwise provided for, B60S; brake arrangements, brake control systems or parts thereof B60T; air-cushion vehicles B60V; motor-cycles, accessories therefor B62J, B62K; testing of vehicles G01M) - F16F: SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION ## Abstract A hollow columnar shock absorbing member (1) has an axis (O), a plurality of rectangular walls (1a, 1b, 1c, 1d) extending parallel to axis (O), and a polygonal cross-section perpendicular to axis (O), wherein the shock absorbing member extends in the direction of axis (O) and absorbs externally-applied impact energy while buckling in the direction of axis (O). The shock absorbing member has at least one bead (2a, 2b, 2c, 2d) formed on at least one wall (1a, 1b, 1c, 1d) among the plurality of walls (1a, 1b, 1c, 1d), the at least one bead (2a, 2b, 2c, 2d) providing the origin of the buckling. The at least one bead (2a, 2b, 2c, 2d) is positioned so as to be deviated towards one edge of a wall (1a, 1b, 1c, 1d) on which the at least one bead (2a, 2b, 2c, 2d) is formed, the edge extending parallel to axis (O). ## Claims ### Claim 1 A hollow columnar shock absorbing member comprising: an axis; a plurality of rectangular walls extending parallel to the axis; and a polygonal cross-section perpendicular to the axis, the shock absorbing member extending in a direction of the axis and being configured to absorb externally-applied impact energy while buckling in the direction of the axis, wherein the shock absorbing member has at least one bead formed on at least one wall among the plurality of walls, the at least one bead providing the origin of buckling, and wherein the at least one bead is positioned so as to be deviated towards one edge of a wall on which the at least one bead is formed, the edge extending parallel to the axis. ### Claim 2 (depends on 1) The shock absorbing member according to claim 1, wherein the at least one bead has one bead formed on one wall. ### Claim 3 (depends on 1) The shock absorbing member according to claim 1, wherein the at least one bead includes a plurality of beads. ### Claim 4 (depends on 3) The shock absorbing member according to claim 3, wherein the plurality of beads are positioned on a straight line in the direction of the axis on one wall at regular intervals. ### Claim 5 (depends on 3) The shock absorbing member according to claim 3, wherein the plurality of beads are arranged on at least two of the plurality of walls one-by-one, and are positioned in the same plane perpendicular to the axis and in the vicinity of edges on the same side with respect to a circumferential direction about the axis of the shock absorbing member. ### Claim 6 (depends on 3) The shock absorbing member according to claim 3, wherein the same number of beads are arranged on each of at least two of the plurality of walls, and are positioned in a plurality of planes perpendicular to the axis and in the vicinity of edges on the same side with respect to a circumferential direction about the axis of the shock absorbing member, so that the beads are positioned on straight lines extending in the direction of the axis. ### Claim 7 (depends on 1) The shock absorbing member according to claim 1, wherein the bead includes a dimple formed on an outer surface of shock absorbing member. ### Claim 8 (depends on 7) The shock absorbing member according to claim 7, wherein the bead is a concave portion with a trough shape extending in a direction perpendicular to the direction of the axis of the shock absorbing member. ### Claim 9 (depends on 1) The shock absorbing member according to claim 1, wherein the bead includes a budge which bulges from an outer surface of the shock absorbing member. ### Claim 10 (depends on 4) The shock absorbing member according to claim 4, wherein the beads are aligned in the direction of the axis, from a start end of buckling of the shock absorbing member. ### Claim 11 (depends on 2) The shock absorbing member according to claim 2, wherein the bead includes a dimple formed on an outer surface of shock absorbing member. ### Claim 12 (depends on 3) The shock absorbing member according to claim 3, wherein the bead includes a dimple formed on an outer surface of shock absorbing member. ### Claim 13 (depends on 4) The shock absorbing member according to claim 4, wherein the bead includes a dimple formed on an outer surface of shock absorbing member. ### Claim 14 (depends on 5) The shock absorbing member according to claim 5, wherein the bead includes a dimple formed on an outer surface of shock absorbing member. ### Claim 15 (depends on 6) The shock absorbing member according to claim 6, wherein the bead includes a dimple formed on an outer surface of shock absorbing member. ### Claim 16 (depends on 2) The shock absorbing member according to claim 2, wherein the bead includes a budge which bulges from an outer surface of the shock absorbing member. ### Claim 17 (depends on 3) The shock absorbing member according to claim 3, wherein the bead includes a budge which bulges from an outer surface of the shock absorbing member. ### Claim 18 (depends on 4) The shock absorbing member according to claim 4, wherein the bead includes a budge which bulges from an outer surface of the shock absorbing member. ### Claim 19 (depends on 5) The shock absorbing member according to claim 5, wherein the bead includes a budge which bulges from an outer surface of the shock absorbing member. ### Claim 20 (depends on 6) The shock absorbing member according to claim 6, wherein the bead includes a budge which bulges from an outer surface of the shock absorbing member.