Electric motor mount having vibration damping
AssigneeRyobi Outdoor Products
InventorsLakhbir S. Suchdev, Rory B. Bringhurst, Michael Baker
Life of this patent
Estimating the term…
Abstract
A motor housing for a string trimmer having a vibration damper disposed between the housing member and the motor. The motor housing has transverse motor support ribs fixedly supporting the motor. A damper chamber is formed in the housing between and end face and an adjacent transverse motor support rib. Stiffner ribs disposed between the end face and the adjacent transverse motor support rib form radial seats on diametrically opposite sides of the motor. A resilient linear vibration damper member is compressively received in each of the damper chambers between the electric motor and the radial seats.
Claims24
A mount for an electric motor comprising:
- an external housing;
- at least two motor support ribs integral with said housing for fixedly supporting the electric motor;
- a damper chamber provided in said external housing circumscribing one end of the electric motor;
- a resilient vibration damper disposed in said damper chamber resiliently engaging the electric motor adjacent to said one end to damp the vibration thereof.
A motor housing for the electric motor of a line trimmer comprising:
- a housing member enclosing said electric motor;
- at least two motor support ribs integral with said housing member for fixedly supporting the electric motor therein;
- a damper chamber provided in said housing member adjacent to one end of said electric motor;
- and
- a resilient vibration damper disposed in said damper chamber resiliently engaging the electric motor to damp the vibration of said motor relative to said housing.
A motor housing for an electric motor having a rotary output shaft for rotating the head of a string trimmer, comprising:
- a pair of complementary housing halves which together form a housing member enclosing the electric motor;
- at least two motor support ribs disposed in each of said complementary housing halves for fixedly supporting the electric motor in said housing member;
- an end face portion provided on each of said complementary housing halves, said end face portions cooperating to partially close said housing, each of said end face portions having a centrally disposed relief permitting the output shaft of the electric motor to pass therethrough;
- two damper chambers, one provided in each of said complementary housing halves on opposite sides of said electric motor;
- a plurality of stiffner ribs provided in each of said two damper chambers forming a radial seat;
- and
- two resilient linear vibration dampers, each of said two linear vibration dampers being disposed in a respective one of said two damper chambers, said two resilient linear vibration dampers being resiliently compressed between the motor and said radial seats.
Dependencies are inferred from the claim text.