Some content of this application is unavailable at the moment.
If this situation persist, please contact us atFeedback&Contact
1. (CN102300677) Electric boring tool

Office : China
Application Number: 201080006253.X Application Date: 01.02.2010
Publication Number: 102300677 Publication Date: 28.12.2011
Publication Kind : A
Prior PCT appl.: Application Number:PCTJP2010000581 ; Publication Number:2010087206 Click to see the data
IPC:
B25D 16/00
B23B 45/02
B25F 5/00
H02P 27/06
B PERFORMING OPERATIONS; TRANSPORTING
25
HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; HANDLES FOR HAND IMPLEMENTS; WORKSHOP EQUIPMENT; MANIPULATORS
D
PERCUSSIVE TOOLS
16
Portable percussive machines with superimposed rotation
B PERFORMING OPERATIONS; TRANSPORTING
23
MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
B
TURNING; BORING
45
Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
02
driven by electric power
B PERFORMING OPERATIONS; TRANSPORTING
25
HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; HANDLES FOR HAND IMPLEMENTS; WORKSHOP EQUIPMENT; MANIPULATORS
F
COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
5
Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
H ELECTRICITY
02
GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
P
CONTROL OR REGULATION OF ELECTRIC MOTORS, GENERATORS, OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS OR REACTORS OR CHOKE COILS
27
Arrangements or methods for the control of ac-motors characterised by the kind of supply voltage
04
using variable-frequency supply voltage, e.g. inverter or converter supply voltage
06
using dc to ac converters or inverters
CPC:
B23B 45/02
B25D 16/006
B25D2211/061
B25D2222/72
B25D2250/055
B25D2250/095
B25D2250/201
B25D2250/221
B25D2250/255
H02P 6/06
H02P 23/03
H02P 27/08
Y02P 70/173
Applicants: Hitachi Koki K.K.
日立工机株式会社
Inventors: Ookubo Takahiro
大久保贵启
Iwata Kazutaka
岩田和隆
Agents: gu gongxia peng hui
北京天昊联合知识产权代理有限公司 11112
北京天昊联合知识产权代理有限公司 11112
Priority Data: 2009021661 02.02.2009 JP
Title: (EN) Electric boring tool
(ZH) 电动钻孔工具
Abstract: front page image
(EN) An electric boring tool(1) comprises an electric motor (40), a switch trigger(61), a tip tool (20) driven by driving force of the electric motor(40), a power transmission mechanism (14) for transmitting the driving force of the electric motor (40) to the tip tool (20) as rotational force and/or hammer force, and a motor control unit (50, 55) for controlling speed of the electric motor (40) in response to an extent of pulling of the switch trigger (61). The motor control unit (50, 55) subjects the electric motor (40) to low speed control (109, 126) after the electric motor (40) is started up, and controls the speed of the electric motor (40) in response to the extent of pulling of the switch trigger (61) when the load current (107) of the electric motor is set value or greater during the low speed control (109).
(ZH)

本发明公开一种电动钻孔工具(1),包括:电动机(40);开关扳机(61);顶端工具(20),其由所述电动机(40)的驱动力驱动;动力传递机构(14),其将所述电动机(40)的驱动力传递给所述顶端工具(20)作为旋转力和/或冲击力;以及电动机控制单元(50,55),其根据所述开关扳机(61)的拉动量来控制所述电动机(40)的速度。在所述电动机(40)开始工作之后,所述电动机控制单元(50,55)使所述电动机(40)受到低速控制(109,126),并且在所述低速控制(109)期间,当所述电动机的负载电流(107)达到设定值或者更大时,所述电动机控制单元根据所述开关扳机(61)的拉动量控制所述电动机(40)的速度。