Adjustment device for suspension means

A mechanism for selectively locking and unlocking a rotor of an electric motor of a height adjusting device of a wheel suspension system of a motor vehicle, comprising;

• a gear secured to and coaxially disposed relative to said rotor;
• a housing having a first set of forward opening, circumferentially spaced recesses relative to an axis thereof, each having a first depth, and a second set of forwarding opening, circumferentially spaced recesses relative to said axis, each disposed between a successive pair of said first set of recesses and having a depth less than said first set of recesses;
• an axially displaceable member mounted on said housing having a set of rearwardly extending, circumferentially spaced segments receivable alternatively in said first and second set of recesses, each having a contact surface disposed in a plane disposed at an angle relative to said axis;
• means interposed between said housing and said displaceable member for biasing said displaceable member rearwardly;
• a locking pin displaceable axially, having a portion extendable out of said housing and into engagement with teeth of said gear;
• means interposed between said displaceable member and said locking pin for biasing said pin forwardly;
• and
• a solenoid having a rod received in said housing and axially displaceable relation thereto, provided with a set of circumferentially spaced surfaces, each disposed in a plane disposed at an angle relative to said axis, engageable with said contact surfaces of said displaceable member whereby upon reciprocation of said rod, said engaging surfaces of said rod and said displaceable member will cooperate with the biasing action of said biasing means to axially displace and rotate said displaceable member, causing said protruding segments to alternatively be inserted into said first and second sets of recesses and correspondingly causing said locking pin to extend and retract into and out of engagement with said gear teeth.

A mechanism for selectively locking and unlocking the rotor of an electric motor of a height adjusting device of a wheel suspension system of a motor vehicle, comprising:

• a gear secured to and coaxially disposed relative to said rotor;
• a guide bushing;
• an annular base member coaxially mounted on said guide bushing having a cylindrical section projecting into a guide housing, having a first set of circumferentially spaced, longitudinally disposed slots in an inner end thereof, each of a first depth, and second set of circumferentially spaced, longitudinally disposed slots in said inner end thereof, each disposed between a succession pair of said first mentioned slots and having a depth less than the depth of said first mentioned slots;
• a shiftable member coaxially disposed in said guide member having a set of circumferentially spaced, longitudinally extending sections, each alignable with and receivable in a slot of the cylindrical section of said base member and having an engageable cam surface in a place disposed at an angle relative to an axis of said guide bushing;
• a transfer member axially disposed in said guide bushing;
• a locking pin bushing axially disposed in said guide bushing, having a coil spring coaxially disposed between shoulders of said guide bushing and locking pin bushing and said transfer member for biasing said transfer and shiftable members toward said base member;
• a locking pin axially disposed in said locking pin housing, partially extendable through an opening therein into engagement with teeth of said gear, and a spring disposed between said pin housing and said pin for biasing said pin through said opening;
• and
• a solenoid having a rod axially received in said base member, provided with a set of circumferentially spaced cam surfaces engageable with cooperable cam surfaces of said shiftable member,
• wherein upon reciprocation of said solenoid rod said cam surfaces of said solenoid rod will react with said cam surfaces of said shiftable member to cause such shiftable member to axially displace and index circumferentially, correspondingly causing said locking pin to engage and disengage the teeth of said gear.