# US 2015/0147504 A1 · Manufacturing method of bar component and bar component > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2015/0147504 A1 - Document ID: US20150147504A1 - Status: Published application - Kind: A1 - Application number: 14/539,283 - Filed: 2014-11-12 - Published: 2015-05-28 - Earliest claimed: 2013-11-22 - Assignees: Jtekt Corporation - Applicants: Jtekt Corporation - Inventors: Takeshi KUNISHIMA - Web page: https://patentgrep.com/patent/US20150147504A1 ## CPC - B62D 3/126: {characterised by the rack} - B29C 37/0082: {Mechanical anchoring (B29C66/303 takes precedence)} - B29C 70/32: on a rotating mould, former or core - B29C 70/86: Incorporated in coherent impregnated reinforcing layers, {e.g. by winding} - B32B 37/142: {Laminating of sheets, panels or inserts, e.g. stiffeners, by wrapping in at least one outer layer, or inserting into a preformed pocket} - B32B 37/16: with all layers existing as coherent layers before laminating - B32B 38/00: Ancillary operations in connection with laminating processes - F16C 3/026: {Shafts made of fibre reinforced resin} - F16C 7/026: {made of fibre reinforced resin} - B29L 2023/22: {Tubes or pipes, i.e. rigid (bent tubes not for use as pipe couplings B29L2023/004)} - B29L 2031/24: Pipe joints or couplings (B29L2031/26 takes precedence) - B29L 2031/75: {Shafts} - B29L 2031/7752: {Racks} - B32B 2038/0052: {Other operations not otherwise provided for} - F16C 2226/60: with threaded parts, e.g. bolt and nut connections - F16C 2326/24: Steering systems, e.g. steering rods or columns - Y10T 428/1355: Elemental metal containing [e.g., substrate, foil, film, coating, etc.] - 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) - B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00) - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - F16C: SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS - B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A manufacturing method of a bar component including a pipe made of a carbon fiber reinforced resin and an internal metal member having an outer peripheral surface in contact with an inner peripheral surface of an end portion of the pipe in an axial direction is provided. The method includes: preparing a core including a metal mandrel extending in the axial direction and the internal metal member having the outer peripheral surface subjected to surface roughening process; winding a prepreg sheet obtained by impregnating carbon fibers with resin around an outer peripheral surface of the core; forming the pipe having the end portion fitted onto and fixed to the outer peripheral surface of the internal metal member by baking and curing the prepreg sheet wound around the outer peripheral surface of the core; and removing the mandrel from the pipe. ## Claims ### Claim 1 A manufacturing method of a bar component including a pipe made of a carbon fiber reinforced resin and an internal metal member having an outer peripheral surface in contact with an inner peripheral surface of an end portion of the pipe in an axial direction, the method comprising: preparing a core including a metal mandrel extending in the axial direction and the internal metal member having the outer peripheral surface subjected to surface roughening process; winding a prepreg sheet obtained by impregnating carbon fibers with resin around an outer peripheral surface of the core; forming the pipe having the end portion fitted onto and fixed to the outer peripheral surface of the internal metal member by baking and curing the prepreg sheet wound around the outer peripheral surface of the core; and removing the mandrel from the pipe. ### Claim 2 (depends on 1) The manufacturing method of a bar component according to claim 1, wherein: the internal metal member is a metal annular ring; and the core is prepared by fitting the metal annular ring onto the mandrel. ### Claim 3 (depends on 2) The manufacturing method of a bar component according to claim 2, further comprising screw-fastening a metal component to an inner peripheral surface of the metal annular ring to fasten the metal component to the end portion of the pipe. ### Claim 4 (depends on 3) The manufacturing method of a bar component according to claim 3, further comprising forming, in the inner peripheral surface of the metal annular ring, a female threaded portion to be screw-fastened to a male threaded portion provided in the metal component. ### Claim 5 (depends on 2) The manufacturing method of a bar component according to claim 2, wherein the prepreg sheet is wound around the outer peripheral surface of the core with a heat-adhesive film interposed between the prepreg sheet and an outer peripheral surface of the metal annular ring. ### Claim 6 (depends on 1) The manufacturing method of a bar component according to claim 1, wherein: the bar component includes the pipe, and a metal component having a main body portion and an extended portion smaller in diameter than the main body portion, the main body portion and the extended portion being arranged in the axial direction of the pipe; the internal metal member is the extended portion; and the core is prepared by connecting the mandrel and the extended portion to each other in the axial direction. ### Claim 7 (depends on 6) The manufacturing method of a bar component according to claim 6, wherein the extended portion has a tapered shape in which a diameter is increased with distance from the main body portion in the axial direction. ### Claim 8 (depends on 6) The manufacturing method of a bar component according to claim 6, wherein the extended portion includes a protruded portion that is protruded from an outer peripheral surface of the extended portion, and positions the pipe in the axial direction. ### Claim 9 (depends on 6) The manufacturing method of a bar component according to claim 6, wherein the prepreg sheet is wound around the outer peripheral surface of the core with a heat-adhesive film interposed between the prepreg sheet and the outer peripheral surface of the extended portion. ### Claim 10 (depends on 1) A bar component manufactured by the manufacturing method according to claim 1. ### Claim 11 (depends on 2) A bar component manufactured by the manufacturing method according to claim 2. ### Claim 12 (depends on 11) The bar component according to claim 11, wherein a part of the metal annular ring is protruded from the pipe to an outside in the axial direction. ### Claim 13 (depends on 12) The bar component according to claim 12, wherein the bar component constitutes a rack bar included in a rack and pinion type steering device. ### Claim 14 (depends on 6) A bar component manufactured by the manufacturing method according to claim 6. ### Claim 15 (depends on 14) The bar component according to claim 14, wherein the bar component constitutes a rack bar included in a rack and pinion type steering device.