Motor having deceleration mechanism
US11870324B2 · kind B2 · utility
0Cited by
2References
5Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 26, 2018 |
| Grant date | Jan 9, 2024 |
| Priority date | — |
| Expiry date | Mar 13, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K2213/03
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Because the pressure angle β° (=12°) of teeth (47) of a worm wheel (46) is larger than the pressure angle α° (=11°) of teeth (45) of a worm (44), tips of the teeth (47) of the worm wheel (46) can be more tapered as compared with a case in which the pressure angle of the teeth of the worm and the pressure angle of the teeth of the worm wheel are the same angle (the conventional case). Thereby, it is possible to ensure non-contact of teeth, which had been variable in terms of contact and non-contact in the case of the conventional form, even if there has been non-uniformity in the teeth (47) of the worm wheel (46).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.