Worm wheel and method of manufacturing the same

Inactive Publication Date: 2005-11-10
NSK LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0015] According to the present invention, positioning of the metal worm wheel in the mold can be effected with a high

Problems solved by technology

However, this type of power steering apparatus suffers from a large drive loss (as much as about several horsepower to ten horsepower at the maximum load) due to continuo

Method used

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  • Worm wheel and method of manufacturing the same
  • Worm wheel and method of manufacturing the same
  • Worm wheel and method of manufacturing the same

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Embodiment Construction

[0026] In the following, embodiments of the present invention will be described with reference to the drawings.

[0027]FIG. 1 is a side view showing the cabin side portion of a steering apparatus according to the first embodiment. In this drawing, reference numeral 1 designates a steering column. The steering column 1 is fixed to structural members 7 and 9 of a vehicle body by means of a pivot pin 3 and a tilt adjustment mechanism 5 respectively. Inside the steering column 1, a steering upper shaft 11 is rotatably supported, and an electric assist mechanism 19 composed of an electric motor 13, a gear housing 15 and output shaft 17 etc. is integrally formed on the steering column 1.

[0028] A steering wheel 21 is attached to the rear end of the steering upper shaft 11. When a driver turns the steering wheel 21, the rotational force is amplified by the electric assist mechanism 19 and transmitted to the output shaft 17. As shown in FIG. 1, a lower steering shaft 25 is connected to the fron

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Abstract

In a worm wheel (41) and a method of manufacturing the same, the worm wheel has a metal worm wheel element (51) in which an axial bore (55) is formed at a rotational center and a synthetic resin gear ring (53) attached on the outer circumference of the worm wheel element, and a centering guide portion (77) that is coaxial with the axial bore (55) is formed on one surface of the metal worm wheel element (51).

Description

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Claims

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Application Information

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Owner NSK LTD
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