A jounce bumper of an automotive vehicle suspension system contains a longitudinal axis. The jounce bumper is configured to resiliently deform between an uncompressed state and a compressed state, where in the compressed state the jounce bumper has a smaller length in the direction of the longitudinal axis than in the uncompressed state. The jounce bumper also contains a base body that acts as a primary spring element, where the base body is partially or completely made of a volume-compressible first material. In particular, the base body further contains at least one secondary spring element integrated within the base body. The secondary spring element is resiliently deformable between a first length in the uncompressed state and a second length in the compressed state, where the second length is smaller than the first length. The secondary spring element is partially or completely made of a compact second material.

A jounce bumper of an automotive vehicle suspension system contains a longitudinal axis. The jounce bumper is configured to resiliently deform between an uncompressed state and a compressed state, where in the compressed state the jounce bumper has a smaller length in the direction of the longitudinal axis than in the uncompressed state. The jounce bumper also contains a base body that acts as a primary spring element, where the base body is partially or completely made of a volume-compressible first material. In particular, the base body further contains at least one secondary spring element integrated within the base body. The secondary spring element is resiliently deformable between a first length in the uncompressed state and a second length in the compressed state, where the second length is smaller than the first length. The secondary spring element is partially or completely made of a compact second material.

A coil spring includes a main body spring and an insulator, the insulator is provided with a support groove which extends around a coil axis and into which a lower end portion of the main body spring is fitted, a lower end portion of the main body spring adheres to an inner surface of the support groove, the inner surface of the support groove is provided with a plurality of spacer protrusions which support an outer peripheral surface of a wire rod, the support groove extends in an angle range of 180° or more and 360° or less around the coil axis, and a ratio of a volume of the spacer protrusions occupying a gap between the inner surface of the support groove and the outer peripheral surface of the wire rod at a center portion in the gap in a circumferential direction around the coil axis is larger than that at the other portions in the gap in the circumferential direction.

A coil spring includes a main body spring and an insulator, the insulator is provided with a support groove which extends around a coil axis and into which a lower end portion of the main body spring is fitted, a lower end portion of the main body spring adheres to an inner surface of the support groove, the inner surface of the support groove is provided with a plurality of spacer protrusions which support an outer peripheral surface of a wire rod, the support groove extends in an angle range of 180° or more and 360° or less around the coil axis, and a ratio of a volume of the spacer protrusions occupying a gap between the inner surface of the support groove and the outer peripheral surface of the wire rod at a center portion in the gap in a circumferential direction around the coil axis is larger than that at the other portions in the gap in the circumferential direction.

A suspension for a vehicle may include: a main frame; a lower leaf spring installed on either side of the main frame; an upper leaf spring disposed above the lower leaf spring so as to be spaced apart from the lower leaf spring; a connection bracket supported by the upper leaf spring, and rotatably mounted on the main frame; an eye clip mounted on an end portion of the lower leaf spring, and connected to a wheel; and a rubber bush mounted on either side of the upper leaf spring, and connected to a vehicle body.

A vibration isolating damper for securing a first structure to a second structure includes a primary isolator of elastomeric material configured to engage the first structure for securement thereto and including a tubular body and a shoulder adjacent to an axial end of the tubular body, the shoulder extending radially inwardly to partially close the axial end of the tubular body. The vibration isolating damper also includes a fastener having a rod portion extending through the tubular body of the primary isolator and configured for securement to the second structure; a rigid tube disposed about the rod portion of the fastener and extending through the tubular body of the primary isolator; and a coil spring disposed about the rigid tube and engaging the shoulder of the primary isolator within the tubular body.

A method for improving fatigue resistance performance of a locomotive rubber-metal pad and the locomotive rubber-metal pad improve the fatigue resistance performance of the rubber-metal pad and prevent rubber and metal from being torn during running by changing a structure of the rubber and the metal of the rubber-metal pad and adjusting a shape and position relationship between the rubber and the metal. The shape and position relationship between the rubber and the metal is adjusted by adjusting thickness of a rubber layer between the rubber and the metal of the rubber-metal pad so that the rubber layer has variable thickness. A rubber layer diameter of each layer is a variable diameter by adjusting a size of the rubber layer diameter between the rubber and the metal of the rubber-metal pad.

A method for improving fatigue resistance performance of a locomotive rubber-metal pad and the locomotive rubber-metal pad improve the fatigue resistance performance of the rubber-metal pad and prevent rubber and metal from being torn during running by changing a structure of the rubber and the metal of the rubber-metal pad and adjusting a shape and position relationship between the rubber and the metal. The shape and position relationship between the rubber and the metal is adjusted by adjusting thickness of a rubber layer between the rubber and the metal of the rubber-metal pad so that the rubber layer has variable thickness. A rubber layer diameter of each layer is a variable diameter by adjusting a size of the rubber layer diameter between the rubber and the metal of the rubber-metal pad.

An isolation system and method are disclosed. The isolation system includes a beam that includes a first end and a second end. The isolation system may include at least one clamping block comprising first elastomeric material, and the first end may be coupled with the first elastomeric material by the at least one clamping block. An end condition of the buckling beam may be varied based on compression stiffening of the first elastomeric material.

A crossbar assembly for facilitating isolation of a sensor assembly from vibration of a payload mounting system on a vehicle comprising an outer crossbar segment, an inner crossbar segment, an isolator, and a damper. The outer crossbar segment comprises a payload mount interface operable to mount to a payload mount, and an outer isolator interface operable to mount to an isolator. The inner crossbar segment comprises a structure interface to mount to a structure, and an inner isolator interface operable to mount to the isolator. The isolator can be supported by the outer and inner crossbar segments. The damper is adjacent the isolator. The isolator is operable to deform in response to relative movement between the outer and inner crossbar segments. The isolator operates to partially decouple the outer crossbar segment from the inner crossbar segment and the damper dampens vibrations propagating between the outer and inner crossbar segments.