Title:
POWER TOOL
Document Type and Number:
WIPO Patent Application WO/2012/165112
Kind Code:
A1
Abstract:
A power tool (1) has a continuously variable transmission (7). The continuously variable transmission (7) has a sun roller (21), a plurality of planetary rollers (20), a speed change ring (26), and a thrust-generating section (25). The sun roller (21) is rotated by a drive motor (6). The plurality of planetary rollers (20) are supported by the circumference of a holder (24) and are cone shaped. Conical surfaces (20a) of the plurality of planetary rollers (20) are in contact with the inside of the speed change ring (26). The thrust-generating section (25) generates thrust that press-contacts the plurality of planetary rollers (20) to the sun roller (21) and the speed change ring (26) and transmits rotational output to a spindle (9). The continuously variable transmission (7) has a configuration whereby: the speed change ring (26) is moved in the axial direction; the press-contact position of the speed change ring (26) relative to the planetary rollers (20) is displaced between a small diameter region and a large diameter region of the conical surfaces (20a); the rotational output of the drive motor (6) is changed continuously and output to the spindle (9) via the thrust-generating section (25). The thrust-generating section (25) comprises a configuration that achieves an alignment function by displacing in the direction perpendicular to the axial direction of the speed change ring (26).
Inventors:
HIRABAYASHI SHINJI (JP)
KOBAYASHI KENJI (JP)
MATSUNO TADASUKE (JP)
KOBAYASHI KENJI (JP)
MATSUNO TADASUKE (JP)
Application Number:
PCT/JP2012/061950
Publication Date:
December 06, 2012
Filing Date:
May 10, 2012
Export Citation:
Assignee:
MAKITA CORP (JP)
HIRABAYASHI SHINJI (JP)
KOBAYASHI KENJI (JP)
MATSUNO TADASUKE (JP)
HIRABAYASHI SHINJI (JP)
KOBAYASHI KENJI (JP)
MATSUNO TADASUKE (JP)
International Classes:
F16H15/52; B25B21/00
Domestic Patent References:
| WO2010021252A1 | 2010-02-25 |
Foreign References:
| JPH06190740A | 1994-07-12 | |||
| JP2006242302A | 2006-09-14 | |||
| JPS55145839A | 1980-11-13 | |||
| JPH05187500A | 1993-07-27 |
Attorney, Agent or Firm:
OKADA PATENT & TRADEMARK OFFICE, P. C. (JP)
Patent business corporation Okada international patent firm (JP)
Patent business corporation Okada international patent firm (JP)
Download PDF:
Claims:
Previous Patent: METHOD FOR PRODUCING MULTI-LAYER SUBSTRATE AND MULTI-LAYER SUBSTRATE
Next Patent: POWER TOOL
Next Patent: POWER TOOL