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US 4,568,067 AGranted
Strut suspension for an automotive vehicle
AssigneeNissan Motor Co., Ltd.
InventorKazuroh Iwata
Life of this patent
Estimating the term…
Abstract
A shock-absorbing strut suspension for an automotive vehicle includes a disc spring between the strut and the vehicle body. The disc spring is pre-loaded upon assembly in the vehicle so that it readily absorbs small-amplitude vibrations while transmitting larger-amplitude vibrations. The disc spring thus augments the effect of elastic dampers designed to absorb high-frequency, relative low-amplitude vibrations.
Claims15
A strut suspension for an automotive vehicle comprising:
- a cylindrical strut operatively connected to a vehicle road wheel for movement therewith;
- shock absorber means disposed within said strut;
- a piston rod having an upper end extending from said shock absorber means and said strut, said piston rod adapted to be displaced relative to said strut in accordance with vibration applied thereto;
- damping means for mounting the upper end of said piston rod to a vehicle body;
- a suspension coil spring interposed between said suspension strut and said vehicle body for producing a damping force for damping relative displacement between said suspension strut and said vehicle body, said suspension coil spring being seated on an upper and a lower spring seat, said lower spring seat being fixed to the outer periphery of said suspension strut;
- said shock absorber means and said coil spring producing damping force for damping relatively low-frequency, high-amplitude vibrations applied thereto to be transmitted to the vehicle body;
- said damping mounting means being interposed between said upper spring seat and said vehicle body and including a disc spring adapted to deflect for damping high-frequency, low-amplitude vibrations and for producing a damping force which increases non-linearly with increases in magnitude of vibrations to be transmitted from said suspension coil spring to said vehicle body through said upper spring seat.
4 more elements
A strut assembly for an automotive vehicle suspension comprising:
- a cylindrical strut operatively connected to a vehicle road wheel for movement therewith;
- shock absorber means disposed within said strut including a piston rod movable relative to said strut and having an upper end extending from said strut;
- a suspension coil spring seated on an upper and a lower spring seat, said lower spring seat being secured to said strut and said upper spring seat being secured to the upper end of said piston rod for movement therewith;
- and
- a resilient damper means interposed between said upper spring seat and a vehicle body for absorbing relative displacement therebetween, said damper means producing a relatively small damping force in response to relatively high-frequency, low-amplitude vibrations transmitted from said suspension coil spring to said vehicle body through said upper spring seat and producing a relatively large damping force in response to vibrations having an amplitude beyond a predetermined value.
2 more elements
Dependencies are inferred from the claim text.