Title:
スクリュードライバー
Document Type and Number:
Japanese Patent JP6410917
Kind Code:
B2
Abstract:
The present invention provides a speed increasing bidirectional mechanical converter, comprising a main shaft and a speed increasing planet gear unit. The speed increasing planet gear unit includes a first ring gear, a planet gear, a sun gear and a planet carrier, wherein the planet gear is mounted on the planet carrier. The planet gear is arranged between the first ring gear and the sun gear, and rotates in an opposite direction against the sun gear. The speed increasing bidirectional mechanical converter further includes a reversing means, via which the first ring gear and the sun gear drive the main shaft. When in use, the planet carrier is kept still, and the main shaft rotates in the preset direction no matter a clockwise or anticlockwise torque is applied to the first ring gear. The speed increasing bidirectional mechanical converter of this invention realizes the direction reverse by using the speed increasing planet gear unit, which simplifies the structure of the speed increasing bidirectional mechanical converter, facilitates the manufacture and meanwhile decreases the space it occupies in the tool and its weight. A screwdriver and a wrench having the speed increasing bidirectional mechanical converter are provided in this invention as well.
Inventors:
Min Wan
Application Number:
JP2017501291A
Publication Date:
October 24, 2018
Filing Date:
July 11, 2014
Export Citation:
Assignee:
Hangzhou Giant Tool Co., Ltd.
Hangzhou Giant Technology Co., Ltd.
Hangzhou Giant Technology Co., Ltd.
International Classes:
B25B17/00; B25B15/04; F16D41/12; F16H1/28
Domestic Patent References:
| JP47039559B1 | ||||
| JP58005152B2 | ||||
| JP3146715U | ||||
| JP2008290206A |
Foreign References:
| WO2007075926A2 |
Attorney, Agent or Firm:
Patent Business Corporation Imy International Patent Office