# US 11,440,363 B2 · Three-point suspension link and production method for a three-point suspension link > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,440,363 B2 - Document ID: US11440363B2 - Status: Granted - Kind: B2 - Application number: 16/635,381 - Filed: 2018-07-16 - Published: 2020-06-11 - Granted: 2022-09-13 - Earliest claimed: 2017-08-04 - Assignees: ZF Friedrichshafen AG - Applicants: ZF Friedrichshafen AG - Inventors: Andre Stieglitz; Ingolf Müller; Philipp Bauer - Web page: https://patentgrep.com/patent/US11440363B2 ## CPC - B60G 7/001: {Suspension arms, e.g. constructional features (B60G7/006 takes precedence)} - B29C 45/14: incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles {(B29C45/1671 takes precedence)} - B29C 45/14631: {Coating reinforcements (fibre reinforcements B29C45/0005)} - B29K 2105/04: cellular or porous - B29K 2705/02: Aluminium - B29L 2031/30: Vehicles, e.g. ships or aircraft, or body parts thereof {(vanes or blades B29L2031/08, air bags B29L2022/027)} - B60G 2206/124: the arm having triangular or Y-shape, e.g. wishbone - B60G 2206/7101: Fiber-reinforced plastics [FRP] - B60G 2206/7102: Aluminium alloys - B60G 2206/821: by gluing - B60G: VEHICLE SUSPENSION ARRANGEMENTS (air-cushion vehicles B60V; {cycle suspensions B62K25/00}) - 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) - B29K: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS - B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES ## Abstract A three-point suspension link for a chassis of a vehicle comprises two load-introducing elements, a central load-introducing element, two core profiles and a supporting winding. The three-point suspension link has two arms and a central bearing area. Each arm is connected to the central bearing area. Each arm has one of the load-introducing elements which is arranged at an end of the corresponding arm opposite the central bearing area. Each arm has a core profile which is spatially arranged between the load-introducing element and the central load-introducing element. The supporting winding surrounds the core profiles and the central load-introducing element in a subarea and is operatively connected to the core profiles, the load-introducing elements and the central load-introducing element. ## Claims ### Claim 1 A three-point suspension link for a chassis of a vehicle, comprising: two load-introducing elements; a central load-introducing element, two core profiles and a supporting winding, two arms and a central bearing area; said central load-introducing element arranged at said central bearing area, said two core profiles formed from a shear-stiff material, said three-point suspension link being arranged so that the two arms and the central bearing area are symmetrical to a central plane having therein a central axis of the three-point suspension link, wherein the central load-introducing element has a central bearing receptacle having a bearing axis, the bearing axis of the central bearing receptacle being perpendicular to the central axis of the three-point suspension link; said supporting winding formed from a fiber reinforced plastic composite material; said three-point suspension link further comprising: two arms each of said two arms connected to said central bearing area and having one of said two load-introducing elements arranged at an end of a respective one of said two arms opposite said central bearing area; each of said arms further having one of said two core profiles spatially arranged between said load-introducing elements and said central load-introducing element; said supporting winding surrounding said core profiles and said central load-introducing element in a subarea and being operatively connected to said core profiles, said load-introducing elements and said central load-introducing element, wherein each load-introducing element has a receptacle which receives a load-introducing element-side end of said supporting winding, and wherein said receptacle of each said load-introducing element is formed to be arcuate, and each load-introducing element-side end of said supporting winding is formed as a loop that completely loops around and surrounds the core profiles, wherein said loop contacts, but does not surround, the receptacle of each load-introducing element. ### Claim 2 (depends on 1) The three-point suspension link according to claim 1, wherein said load-introducing elements are formed from a metal material. ### Claim 3 (depends on 1) The three-point suspension link according to claim 1, wherein said load-introducing elements are formed from a fiber reinforced plastic composite material. ### Claim 4 (depends on 1) The three-point suspension link according to claim 1, wherein said central load-introducing element is formed from a metal material. ### Claim 5 (depends on 1) The three-point suspension link according to claim 1, wherein said central load-introducing element (3) is formed from a fiber reinforced plastic composite material. ### Claim 6 (depends on 1) The three-point suspension link according to claim 1, wherein said at least one receptacle of each load-introducing element is connected by positive engagement to a corresponding load-introducing element-side end of said supporting winding. ### Claim 7 (depends on 1) The three-point suspension link according to claim 1, wherein each said load-introducing element is operatively connected to said supporting winding by bonding by an adhesive connection. ### Claim 8 (depends on 1) The three-point suspension link according to claim 1, wherein each said arm has a cutout spatially between a respective one of said core profiles and said load-introducing element. ### Claim 9 (depends on 1) The three-point suspension link according to claim 1, wherein each said arm has a cutout spatially between a respective one of said core profiles and said central load-introducing element. ### Claim 10 (depends on 1) The three-point suspension link according to claim 1, wherein said supporting winding is formed to be thickened at an area in which said supporting winding contacts said central load-introducing element. ### Claim 11 (depends on 1) The three-point suspension link according to claim 1, wherein said at least one load-introducing element is formed of two parts. ### Claim 12 (depends on 1) The three-point suspension link according to claim 1, wherein said shear-stiff material of said core profiles is a fiber reinforced plastic composite material or a foam material. ### Claim 13 A method for producing a three-point suspension link having two load-introducing elements; a central load-introducing element, two core profiles and a supporting winding, two arms and a central bearing area; said central load-introducing element arranged at said central bearing area; said two core profiles formed from a shear-stiff material, said three-point suspension link being arranged so that the two arms and the central bearing area are symmetrical to a central plane having therein a central axis of the three-point suspension link, wherein the central load-introducing element has a central bearing receptacle having a bearing axis, the bearing axis of the central bearing receptacle being perpendicular to the central axis of the three-point suspension link; said supporting winding formed from a fiber reinforced plastic composite material; said three-point suspension link further comprising two arms, each of said two arms connected to said central bearing area and having one of said two load-introducing elements arranged at an end of a respective one of said two arms opposite said central bearing area; each of said arms further having one of said two core profiles spatially arranged between the load-introducing elements and said central load-introducing element; said supporting winding surrounding said core profiles and said central load-introducing element in a subarea and being operatively connected to said core profiles, said load-introducing elements and said central load-introducing element, wherein each load-introducing element has a receptacle which receives a load-introducing element-side end of said supporting winding, and wherein said receptacle of each said load-introducing element is formed to be arcuate, and each load-introducing element-side end of said supporting winding is formed as a loop that completely loops around and surrounds the core profiles, wherein said loop contacts, but does not surround, the receptacle of each load-introducing element; said method comprising: inserting said central load-introducing element and said core profiles into a mold; setting down said supporting winding at said central load-introducing element and said core profiles; operatively connecting said supporting winding with said core profiles by an adhesive connection; curing said supporting winding; operatively connecting said supporting winding with said central load-introducing elements by a bonding connection and/or positive engagement connection; and removing said three-point suspension link from the mold.