# US 10,500,914 B2 · Connecting rod for a multiple connecting rod axle of a motor vehicle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,500,914 B2 - Document ID: US10500914B2 - Status: Granted - Kind: B2 - Application number: 15/865,475 - Filed: 2018-01-09 - Published: 2018-07-12 - Granted: 2019-12-10 - Earliest claimed: 2017-01-10 - Assignees: KSM Castings Group GmbH - Applicants: KSM Castings Group GmbH - Inventors: Florian Buerger; Christian Richard; Christian Moschner; Klaus Greven; Oliver Grimm; Manikandan Loganathan - Web page: https://patentgrep.com/patent/US10500914B2 ## CPC - B60G 7/001: {Suspension arms, e.g. constructional features (B60G7/006 takes precedence)} - B60G 3/20: all arms being rigid - B60G 7/006: {Attaching arms to sprung or unsprung part of vehicle, characterised by comprising attachment means controlled by an external actuator, e.g. a fluid or electrical motor (B62D7/146 takes precedence)} - F16C 7/02: Constructions of connecting-rods with constant length - F16C 11/04: Pivotal connections (hinges for doors, windows or wings E05D) - F16H 21/34: with two or more connecting-rods to each crank or eccentric - B60G 2204/1162: directly mounted on the suspension arm - B60G 2204/1244: on a suspension arm - B60G 2204/129: Damper mount on wheel suspension or knuckle - B60G 2206/014: with reinforcing nerves or branches - B60G 2206/017: forming an eye for the bushing - B60G 2206/124: the arm having triangular or Y-shape, e.g. wishbone - B60G 2206/7102: Aluminium alloys - B60G 2206/8101: by casting - F16C 2326/05: Vehicle suspensions, e.g. bearings, pivots or connecting rods used therein - B60G: VEHICLE SUSPENSION ARRANGEMENTS (air-cushion vehicles B60V; {cycle suspensions B62K25/00}) - F16C: SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS - F16H: GEARING ## Abstract A connecting rod for a multiple connecting rod axle of a motor vehicle, especially a lower wishbone for a multiple connecting rod rear axle, includes a substantially Y-shaped basic framework with a first arm, the free end region of which has a first seat for linking the connecting rod to an auxiliary frame or a vehicle body, with a second arm, the free end region of which has a second seat for linking the connecting rod to the auxiliary frame rod or the vehicle body, and with a third arm, the free end region of which has a third seat for linking the connecting rod to a wheel carrier. The connecting rod is manufactured in one piece with the seats. ## Claims ### Claim 1 A connecting rod for a multiple connecting rod axle of a motor vehicle comprising: a substantially Y-shaped basic framework comprising a first arm, a second arm, and a third arm; a dish-shaped seat for a spring, the dish-shaped seat being disposed at least partly between the first arm and the third arm; and a rib-shaped stiffening element provided on a side of the connecting rod which in the installed condition of the connecting rod points toward the roadway; wherein the first arm comprises a first free end region having a first seat for linking the framework to an auxiliary frame or a vehicle body; wherein the second arm comprises a second free end region having a second seat for linking the framework to the auxiliary frame or the vehicle body; wherein a third arm comprises a third free end region having a third seat for linking the framework to a wheel carrier; and wherein the framework is manufactured in one piece with the first, second, and third seats; wherein, in an installed condition of the connecting rod, the first arm is positioned in a travel direction forward of the second arm; and wherein the stiffening element starts substantially from the first seat, runs across the dish-shaped seat, and ends in the third free end region. ### Claim 2 (depends on 1) The connecting rod according to claim 1, wherein the dish-shaped seat is disposed laterally approximately at a height of a point of intersection of the first, second, and third arms. ### Claim 3 (depends on 1) The connecting rod according to claim 1, wherein the dish-shaped seat is formed so that an arrangement of the spring on the dish-shaped seat is provided on a side of the connecting rod pointing away from the roadway in the installed condition of the connecting rod. ### Claim 4 (depends on 3) The connecting rod according to claim 3, wherein the dish-shaped seat is at least partly curved inwardly on the side of the connecting rod pointing away from the roadway in the installed condition of the connecting rod. ### Claim 5 (depends on 1) The connecting rod according to claim 1, wherein the dish-shaped seat has a rim joined at least partly via at least one connecting region to at least one of the arms between which the dish-shaped seat is disposed. ### Claim 6 (depends on 1) The connecting rod according to claim 1, further comprising a flat connecting region that continues a curvature of the dish-like seat at least partly. ### Claim 7 (depends on 6) The connecting rod according to claim 6, wherein the flat connecting region has at least one weight-reducing recess comprising at least one of a perforation and a cavity open at one end. ### Claim 8 (depends on 5) The connecting rod according to claim 5, further comprising a rib-shaped reinforcing element which, in the installed condition of the connecting rod, starting substantially from the first seat of the first arm, runs along a side which is forward or the rim which is forward, in the travel direction, of the dish-shaped seat, and ends in the third free end region. ### Claim 9 (depends on 8) The connecting rod according to claim 8, wherein at least one of a portion of the reinforcing element, a portion of the dish-shaped seat, and a portion of the third arm encloses at least one through-going recess. ### Claim 10 (depends on 2) The connecting rod according to claim 2, further comprising a shock absorber fastening seat for fastening of a shock absorber. ### Claim 11 (depends on 10) The connecting rod according to claim 10, wherein the shock absorber fastening seat is disposed in the third arm. ### Claim 12 (depends on 10) The connecting rod according to claim 10, wherein the shock absorber fastening seat is formed to be open at one end on a side which in the installed condition of the connecting rod is rearward in the travel direction. ### Claim 13 (depends on 10) The connecting rod according to claim 10, further comprising a stabilizer fastening seat for fastening of a stabilizer. ### Claim 14 (depends on 13) The connecting rod according to claim 13, wherein the stabilizer fastening seat is disposed in a region of the point of intersection of the first, second, and third arms. ### Claim 15 (depends on 13) The connecting rod according to claim 13, wherein the stabilizer fastening seat is formed to be open at one end on a side which in the installed condition of the connecting rod is rearward in the travel direction. ### Claim 16 (depends on 2) The connecting rod according to claim 2, wherein the first arm merging into the point of intersection widens toward the point of intersection in at least one portion. ### Claim 17 (depends on 1) The connecting rod according to claim 1, wherein the second arm has at least one weight-reducing recess comprising at least one of a perforation and a cavity open at one end. ### Claim 18 (depends on 17) The connecting rod according to claim 17, wherein the at least one recess within the second arm is provided on a side of the connecting rod which in the installed condition of the connecting rod points away from the roadway. ### Claim 19 (depends on 17) The connecting rod according to claim 17, wherein the at least one recess extends mostly over a length of the second arm. ### Claim 20 (depends on 17) The connecting rod according to claim 17, wherein the at least one recess is subdivided into compartments by at least one stiffening longitudinal wall. ### Claim 21 (depends on 13) The connecting rod according to claim 13, wherein the third arm has at least one weight-reducing recess comprising at least one of a perforation and a cavity open at one end. ### Claim 22 (depends on 17) The connecting rod according to claim 17, wherein the recess is disposed between the shock absorber fastening seat and the stabilizer fastening seat. ### Claim 23 (depends on 13) The connecting rod according to claim 13, further comprising a first stiffening flat element which, in the installed condition of the connecting rod, is disposed on a side which is rearward in the travel direction, between at least two of the second seat, the stabilizer fastening seat and the shock absorber fastening seat, and is connected to the adjoining second and third arms. ### Claim 24 (depends on 23) The connecting rod according to claim 23, wherein the first stiffening flat element, beginning at the second seat, ends underneath the stabilizer fastening seat for fastening of the stabilizer to the shock absorber fastening seat. ### Claim 25 (depends on 23) The connecting rod according to claim 23, further comprising a second stiffening flat element which, in the installed condition of the connecting rod, is disposed on a side which is forward in the travel direction, in a portion in the first free end region and the reinforcing element and is connected with the first seat and the reinforcing element. ### Claim 26 (depends on 25) The connecting rod according to claim 25, wherein each of the first and second flat stiffening elements is formed to be substantially planar. ### Claim 27 (depends on 1) The connecting rod according to claim 1, wherein the first, second, and third arms are not hollow-cast. ### Claim 28 A connecting rod for a multiple connecting rod axle of a motor vehicle comprising: a substantially Y-shaped basic framework comprising a first arm, a second arm, and a third arm; a dish-shaped seat for a spring is disposed at least partly between the first arm and the third arm; and a rib-shaped reinforcing element; wherein the first arm comprises a first free end region having a first seat for linking the framework to an auxiliary frame or a vehicle body; wherein the second arm comprises a second free end region having a second seat for linking the framework to the auxiliary frame or the vehicle body; wherein a third arm comprises a third free end region having a third seat for linking the framework to a wheel carrier; wherein the framework is manufactured in one piece with the first, second, and third seats; wherein, in an installed condition of the connecting rod, the first arm is positioned in a travel direction forward of the second arm; wherein the dish-shaped seat has a rim joined at least partly via at least one connecting region to at least one of the arms between which the dish-shaped seat is disposed; wherein the rib-shaped reinforcing element, in the installed condition of the connecting rod, starting substantially from the first seat or the first arm, runs along a side which is forward or the rim which is forward, in the travel direction, of the dish-shaped seat, and ends in the third free end region; and wherein at least one of a portion of the reinforcing element, a portion of the dish-shaped seat, and a portion of the third arm encloses at least one through-going recess. ### Claim 29 A connecting rod for a multiple connecting rod axle of a motor vehicle comprising: a substantially Y-shaped basic framework comprising a first arm, a second arm, and a third arm; a dish-shaped seat for a spring, the dish-shaped seat being disposed at least partly between the first arm and the third arm; a shock absorber fastening seat for fastening of a shock absorber; a stabilizer fastening seat for fastening of a stabilizer; and a first stiffening flat element; wherein the first arm comprises a first free end region having a first seat for linking the framework to an auxiliary frame or a vehicle body; wherein the second arm comprises a second free end region having a second seat for linking the framework to the auxiliary frame or the vehicle body; wherein a third arm comprises a third free end region having a third seat for linking the framework to a wheel carrier; wherein the framework is manufactured in one piece with the first, second, and third seats; wherein, in an installed condition of the connecting rod, the first arm is positioned in a travel direction forward of the second arm; wherein the dish-shaped seat is disposed laterally approximately at a height of a point of intersection of the first, second, and third arms; wherein the first stiffening flat element, in the installed condition of the connecting rod, is disposed on a side which is rearward in the travel direction, between at least two of the second seat, the stabilizer fastening seat and the shock absorber fastening seat, and is connected to the adjoining second and third arms; and wherein the first stiffening flat element, beginning at the second seat, ends underneath the stabilizer fastening seat for fastening of the stabilizer to the shock absorber fastening seat. ### Claim 30 A connecting rod for a multiple connecting rod axle of a motor vehicle comprising: a substantially Y-shaped basic framework comprising a first arm, a second arm, and a third arm; a dish-shaped seat for a spring, the dish-shaped seat being disposed at least partly between the first arm and the third arm; a shock absorber fastening seat for fastening of a shock absorber; a stabilizer fastening seat for fastening of a stabilizer; a first stiffening flat element; and a second stiffening flat element; wherein the first arm comprises a first free end region having a first seat for linking the framework to an auxiliary frame or a vehicle body; wherein the second arm comprises a second free end region having a second seat for linking the framework to the auxiliary frame or the vehicle body; wherein a third arm comprises a third free end region having a third seat for linking the framework to a wheel carrier; wherein the framework is manufactured in one piece with the first, second, and third seats; wherein, in an installed condition of the connecting rod, the first arm is positioned in a travel direction forward of the second arm; wherein the dish-shaped seat is disposed laterally approximately at a height of a point of intersection of the first, second, and third arms; wherein the first stiffening flat element, in the installed condition of the connecting rod, is disposed on a side which is rearward in the travel direction, between at least two of the second seat, the stabilizer fastening seat and the shock absorber fastening seat, and is connected to the adjoining second and third arms; and wherein the second stiffening flat element, in the installed condition of the connecting rod, is disposed on a side which is forward in the travel direction, in a portion in the first free end region and the reinforcing element and is connected with the first seat and the reinforcing element.