Motor and manufacturing method thereof
AssigneeAsmo Co., Ltd.
InventorsKatsuhiko Torii, Hiroaki Yamamoto
Life of this patent
Estimating the term…
Abstract
A motor is provided wherein a spindle of a motor body and a worm shaft of a speed reducer are easily coupled. When a yoke housing and a gear housing are to be assembled, first engaging bulges and on the side of the yoke housing and second engaging bulges and on the gear housing are engaged to position a spindle and a worm shaft on a common axis. If the relative rotational positions of a two-plane width bulge of the spindle and a two-plane width hole of a clutch coupled to the worm shaft fail to be located at predetermined positions, the two-plane width bulge is fitted in the two-plane width hole by driving the spindle rotationally while urging the yoke housing and the gear housing in the assembled direction.
Claims10
A motor comprising:
- a motor body having a yoke housing, said yoke housing having a spindle supported relative to and rotationally driven by said yoke housing, said yoke housing included a first engaging portion, said spindle having a first connection portion;
- and
- a speed reducer including a gear housing, said speed reducer having a worm shaft coaxially connected to said spindle, said gear housing including a second engaging portion, said worm shaft having a second connection portion;
- wherein said first connection portion and said second connection portion are connectable to coaxially connect and rotatably fix said spindle to said worm shaft, wherein said first engaging portion and said second engaging portion connects said yoke housing and said gear housing while maintaining said first connection portion and said second connection portion in an unconnected state.
A method for coupling a motor spindle and a worm shaft, said spindle supported by a yoke housing and rotationally driven relative to of a motor body, said worm shaft supported by a gear housing of a speed reducer, said spindle and said worm shaft being on a common axis when said yoke housing and said gear housing are assembled, said method comprising the steps of:
- connecting first engaging portions on said yoke housing with second engaging portions on said gear housing to align said worm shaft with said spindle;
- and
- connecting a first connection portion on said spindle with a second connection portion on said worm shaft while said first engaging portions and said second engaging portions hold said worm shaft and said spindle on a common axis.
A motor comprising:
- a motor body having a yoke housing, said yoke housing having a spindle supported relative to and rotationally driven by said yoke housing, said yoke housing included a first engaging portion, said first engaging portion comprising a first pair of engaging bulges protruding in an axial direction of said spindle from said yoke housing, said spindle having a first connection portion;
- and
- a speed reducer including a gear housing, said speed reducer having a worm shaft coaxially connected to said spindle, said gear housing including a second engaging portion, said second engaging portion including a second pair of engaging bulges, said second engaging bulges extending in an axial direction of said worm shaft, said worm shaft having a second connection portion, said second connection portion having a tapered aperture for receiving said first connection portion, whereby said tapered aperture is for guiding and affixing said first connection portion;
- said first connection portion and said second connection portion connectable to coaxially connect and rotatably fix said spindle to said worm shaft, wherein said first engaging portion and said second engaging portion connects said yoke housing and said gear housing while maintaining said first connection portion and said second connection portion in an unconnected state.
Dependencies are inferred from the claim text.