# US 8,770,605 B2 · Chassis frame > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,770,605 B2 - Document ID: US8770605B2 - Status: Granted - Kind: B2 - Application number: 14/113,643 - Filed: 2012-04-27 - Published: 2014-02-20 - Granted: 2014-07-08 - Earliest claimed: 2011-04-27 - Assignees: Mitsubishi Jidosha Kogyo Kabushiki Kaisya; Hiruta-Kogyo Co., Ltd. - Applicants: Manabu Urata; Kenichi Suzuki; Junji Ishii; Yoshitaka Noda; Mitsuyori Gurita - Inventors: Manabu Urata; Kenichi Suzuki; Junji Ishii; Yoshitaka Noda; Mitsuyori Gurita - Web page: https://patentgrep.com/patent/US8770605B2 ## CPC - B60G 21/0551: {Mounting means therefor} - B62D 21/02: comprising longitudinally or transversely arranged frame members - B62D 21/11: with resilient means for suspension {, e.g. of wheels or engine; sub-frames for mounting engine or suspensions} - B62D 24/00: Connections between vehicle body and vehicle frame (B62D23/00, B62D33/077 take precedence) - B60G 2206/50: Constructional features of wheel supports or knuckles, e.g. steering knuckles, spindle attachments - B60G: VEHICLE SUSPENSION ARRANGEMENTS (air-cushion vehicles B60V; {cycle suspensions B62K25/00}) - 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) ## Abstract A chassis frame (1) including connection members (13) each configured by a pipe that is connected to a vehicle body frame. Each connection member (13) is provided with an attachment part (2) at an end of the pipe. The attachment part (2) includes a flat attachment face (21) formed by flatly crashing an end of the pipe to form the overlapped portion where a plate of the pipe is overlapped. The flat attachment face (21) is provided on a center in left and right direction of the overlapped portion. A shape of the end of the pipe is a substantially gate shape in its cross section. The attachment part (2) further includes longitudinal ribs (22) bending from the flat attachment face (21) to both left and right sides of the overlapped portion. Each longitudinal rib (22) is formed with a through hole (221) communicating an outside and an inner side of each connection member (13) by expanding a folded edge of the overlapped portion, the through hole is shortened by cutting the plate of the pipe surrounding an opening of the through hole (221). ## Claims ### Claim 1 A chassis frame comprising connection members each configured by a pipe that is connected to a vehicle body frame, wherein each connection member is provided with an attachment part at an end of the pipe, the attachment part includes a flat attachment face formed by flatly crashing the end of the pipe to form an overlapped portion where a plate of the pipe is overlapped, the flat attachment face is provided on a center in left and right directions of the overlapped portion, the attachment part further includes longitudinal ribs bending from the flat attachment face to both left and right sides of the overlapped portion, and each longitudinal rib is formed with a through hole communicating an outside and an inner side of each connection member by expanding a folded edge of the overlapped portion, a length of the through hole is shortened relative to an adjacent end of the pipe by cutting a plate of the pipe surrounding an opening of the through hole. ### Claim 2 (depends on 1) The chassis frame according to claim 1, wherein the plate of the pipe surrounding the opening of the through hole of each longitudinal rib is cut outside a virtual circle, the virtual circle is concentric with a hole for bolting provided on the flat attachment face, the virtual circle is a same size as or larger than a head of a bolt inserted into the hole for bolting.