Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
IMPACT ROTARY TOOL
Document Type and Number:
WIPO Patent Application WO/2018/042872
Kind Code:
A1
Abstract:
This impact rotary tool (1) is provided with: a primary hammer (20) capable of rotating about the axis of rotation of a spindle (11) and capable of moving in the direction of the axis of rotation; a first cam structure having a steel ball (19) disposed between a first guide groove (11b) on the spindle side and a first engagement groove (20b) on the primary hammer side; a secondary hammer (21) accommodating the primary hammer and capable of rotating with the primary hammer; a carrier (16) formed on the rear end side of the spindle and accommodating a gear for transmitting power; and a second cam structure having a steel ball (17) disposed between a second guide groove (16a) on the carrier side and a second engagement groove (21f) on the secondary hammer side. A stopper member (30) restricts the range of movement of the primary hammer and/or the secondary hammer in the direction of the axis of rotation so that the steel ball (19) and the steel ball (17) will not come into contact with groove ends of the respective cam structures.

Inventors:
KUSAGAWA, Takashi
MURAMATSU, Masari
Application Number:
JP2017/024687
Publication Date:
March 08, 2018
Filing Date:
July 05, 2017
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD. (1-61, Shiromi 2-chome Chuo-ku, Osaka-sh, Osaka 07, 〒5406207, JP)
International Classes:
B25B21/02
Attorney, Agent or Firm:
MORISHITA Sakaki (2-11-12, Ebisu-Nishi Shibuya-ku Tokyo, 21, 〒1500021, JP)
Download PDF: