A mounting system for the elastic mounting of a strut or a vibration damper on a vehicle body includes a unit insertable into a receiving cup and a fixing device. The unit includes a mounting unit and a piston rod of a strut or vibration damper. In embodiments, the mounting unit has an elastomer mount for mounting the piston rod; the elastomer mount has a core for receiving the piston rod and an elastomer body, and a ring element that is a separate part or is non-positively, positively and/or materially connected to the body; the unit and fixing device may be inserted into the receiving cup from a side facing away from the body; the fixing device engages behind an undercut formed on the receiving cup; the ring element is supported on the fixing device; and/or the elastomer body is prestressed and presses the ring element against the fixing device.

A bearing arrangement for a damper bearing of a shock absorber in a wheelhouse of a vehicle. A damper receptacle is formed in a wheelhouse sheet metal part delimiting the wheelhouse. A threaded bolt is guided through a damper bearing screw hole and through a screw hole of the damper receptacle and the bolt tip of the threaded bolt is screwed together with an internal thread of a reinforcement element which is arranged on the side of the damper receptacle. A positioning aid is associated with the damper receptacle, via which positioning aid the damper bearing of the shock absorber can be pre-positioned in an assembly process up to an installation position in which the screw hole of the damper bearing, the screw hole of the damper receptacle, and the reinforcement element internal thread are oriented flush with respect to each other in a screw direction.

A shock absorber includes a first damping force generating portion, and a second damping force generating portion. The second damping force generating portion includes a first flow path, an opening and closing member, an adjustment unit which adjusts a position of the opening and closing member in the axial direction, a second flow path which is located at a different position from the first flow path and passes through the piston in the axial direction, and a second valve which is disposed at an end portion of the second flow path at a side of a second end portion which is an end portion at an opposite side to the first end portion in the axial direction, and which opens and closes the second flow path.

A shock absorber includes a first damping force generating portion, and a second damping force generating portion. The second damping force generating portion includes a first flow path, an opening and closing member, an adjustment unit which adjusts a position of the opening and closing member in the axial direction, a second flow path which is located at a different position from the first flow path and passes through the piston in the axial direction, and a second valve which is disposed at an end portion of the second flow path at a side of a second end portion which is an end portion at an opposite side to the first end portion in the axial direction, and which opens and closes the second flow path.

A rebound bumper for a shock absorber includes a first portion formed from a first material having a first spring rate and a second portion coupled to the first portion and formed from a second material having a second spring rate greater than the first spring rate. The first portion and the second portion are configured to fit on a piston rod between a piston and a rod guide assembly of the shock absorber. Also, the rebound bumper exhibits a displacement under load relationship with the first spring rate, the second spring rate, and a third spring rate greater than the first spring rate and less than the second spring rate.

A rebound bumper for a shock absorber includes a first portion formed from a first material having a first spring rate and a second portion coupled to the first portion and formed from a second material having a second spring rate greater than the first spring rate. The first portion and the second portion are configured to fit on a piston rod between a piston and a rod guide assembly of the shock absorber. Also, the rebound bumper exhibits a displacement under load relationship with the first spring rate, the second spring rate, and a third spring rate greater than the first spring rate and less than the second spring rate.

The present invention provides a shock absorber serving as a cylinder device capable of securing a clearance between an outer tube and a peripheral member and improving bending rigidity of the outer tube. An outer tube 104 housing an inner tube 103 is provided with a pair of knuckle bracket fastening plates 110a and 110b protruding in one direction from an outer surface of the outer tube 104. The pair of knuckle bracket fastening plates 10a and 110b has wide surfaces facing each other, and the wide surfaces are provided along an axial direction of the outer tube 104. When the inside of a vehicle is defined as a virtual region I 192 and the outside of the vehicle is defined as a virtual region II 193 with a virtual line 191, which passes through a stroke center line 71 and matches the inside and outside of the vehicle, as a boundary in an orthogonal cross section at an arbitrary axial position of the outer tube 104 orthogonal to the stroke center line 71 of a piston rod 102, a cross-sectional area A.sub.i1 of the outer tube 104 in the virtual region I 192 is made larger than a cross-sectional area A.sub.o1 of the outer tube 104 in the virtual region II 193.

The present invention provides a shock absorber serving as a cylinder device capable of securing a clearance between an outer tube and a peripheral member and improving bending rigidity of the outer tube. An outer tube 104 housing an inner tube 103 is provided with a pair of knuckle bracket fastening plates 110a and 110b protruding in one direction from an outer surface of the outer tube 104. The pair of knuckle bracket fastening plates 10a and 110b has wide surfaces facing each other, and the wide surfaces are provided along an axial direction of the outer tube 104. When the inside of a vehicle is defined as a virtual region I 192 and the outside of the vehicle is defined as a virtual region II 193 with a virtual line 191, which passes through a stroke center line 71 and matches the inside and outside of the vehicle, as a boundary in an orthogonal cross section at an arbitrary axial position of the outer tube 104 orthogonal to the stroke center line 71 of a piston rod 102, a cross-sectional area A.sub.i1 of the outer tube 104 in the virtual region I 192 is made larger than a cross-sectional area A.sub.o1 of the outer tube 104 in the virtual region II 193.

A strut mount includes: an inner member coupled to a suspension; an outer bracket having an outer cylinder portion housing the inner member, and a flange portion protruding radially outward from the outer cylinder portion and coupled to a vehicle body; an elastic member interposed between the inner member and the outer cylinder portion; and a seal member interposed between the flange portion and the vehicle body. The seal member includes an annular portion located between the flange portion and the vehicle body, and a first downward extending portion extending downward from an outer peripheral portion of the annular portion toward the opposite side from the vehicle body. The flange portion includes a placement surface portion which faces toward the vehicle body and on which the annular portion is placed, and a first sidewall portion extending from an outer peripheral portion of the placement surface portion to the opposite side from the vehicle body. A first engaging portion of the first downward extending portion and a first engaged portion of the first sidewall portion are engaged with each other to reduce axial movement of the annular portion placed on the placement surface portion.

A top cap assembly for a shock absorber includes a cap which has a first locking member connected to the center thereof, and an inner plate which has a second locking member connected to the center thereof. A first section of a piston rod extends through the first passage of the first locking member and is restricted by the first ridge of the first passage. A second section of the piston rod extends through the second passage of the second locking member and is restricted by the second ridge of the second passage. When installing the top cap assembly to different shock absorbers with different diameters, only the first locking member and the second locking member need to be replaced, and the cap and the inner plate do not need to be replaced.