JPH0216364U - - Google Patents

Description

[Brief explanation of drawings]

Figures 1 to 4 show an electric power steering device as an embodiment of the present invention. Figure 1 is a configuration diagram of its worm reduction mechanism, and Figure 2 is a schematic perspective view of the worm reduction mechanism. (An enlarged view of a portion of Fig. 3), Fig. 3 is a schematic perspective view showing the overall configuration, and Figs. 5 and 6 show a conventional electric power steering device, FIG. 5 is a schematic perspective view showing its overall configuration, and FIG. 6 is a schematic perspective view of its worm reduction mechanism ( FIG. 5 is an enlarged view of the portion shown in FIG. 1...Electric motor (electric steering motor),
1a...Rotating shaft of electric motor, 2...Front wheel, 4...Wheel steering shaft (tie rod), 5...Torsion bar,
7...Worm gear, 8a...Steering shaft, 8b
... Steering output shaft, 10... Torque sensor, 11... Steering handle, 12... Controller, 13...
Worm reduction mechanism, 13a...Casing of the worm reduction mechanism, 14, 15a, 15b...Spur gear, 1
6a, 16b...worm, 17a-17d...bearing.

Claims (1)

[Scope of utility model registration request] The worm reduction mechanism includes an electric motor that operates based on a steering torque input to a steering shaft, and a worm reduction mechanism that transmits rotational power of the electric motor to a steering output shaft coupled to a wheel steering shaft. An electric power steering device comprising: a worm gear mounted on a shaft side; and a plurality of worms mounted on a rotating shaft side of the electric motor and meshing with the worm gear.