Power drill

Patent metadata

Field	Value
Publication number	US-9649697-B2
Application number	US-201514749188-A
Country	US
Kind code	B2
Filing date	Jun 24, 2015
Priority date	Apr 29, 2011
Publication date	May 16, 2017
Grant date	May 16, 2017

Abstract

A drilling apparatus has a housing, a motor in the housing, a drive spindle rotatable about an axis on the housing, a chuck body, and a plurality of jaws shiftable in the chuck body. First and second elements interconnected by a screw thread and engaged between the body and the jaws for shifting the jaws on the housing. A drive sleeve rotationally fixed to the first element is drivable by the motor.

First claim

I claim:

1. A drilling apparatus comprising:
a housing 1 ;
a motor 37 in the housing 1 ;
a drive spindle 28 rotatable by the motor 37 about an axis A on the housing 1 , axially shiftable between a drilling position and an adjustment position, and having at least one ring of external teeth 29 forming a sun gear of a planetary-gear transmission;
a chuck sleeve 26 forming a planet carrier of the transmission and formed with at least one ring of internal teeth 27 surrounding the drive spindle 28 and meshable with the at least one ring of external teeth 29 , the external teeth 29 of the spindle 28 meshing in the drilling position with the internal teeth 27 of the sleeve and being in the adjustment position out of mesh with the internal teeth 27 of the sleeve 26 ;
at least one planet gear 12 of the transmission carried on the chuck sleeve 26 and meshing with the ring of external teeth 29 of the drive spindle 28 ;
a plurality of jaws 7 shiftable in the chuck sleeve 26 and having external screwthread teeth;
a drive sleeve 5 , 8 forming a ring gear 13 of the transmission, meshing with the at least one planet gear 12 , and having an internal screwthread 6 meshing with the external screwthread teeth of the jaws 7 ; and
means for shifting the chuck sleeve 26 and drive spindle 28 relatively axially between the drilling position and the adjustment position.

2. The drilling apparatus defined in claim 1 , further comprising
a spring braced between the chuck sleeve 26 and the drive spindle 28 and urging the drive spindle 28 into the drilling position.

3. The drilling apparatus defined in claim 1 , wherein the means is an adjustment ring outside the housing 1 and axially coupled to the drive spindle 28 .

4. The drilling apparatus defined in claim 3 , further comprising:
a connector extending between the adjustment ring and the drive spindle 28 .

Assignees

• Roehm Gmbh

Inventors

• Schenk Peter

Classifications

• B23B2260/07

  Gears · CPC title

• Y10T279/17615

  Obliquely guided reciprocating jaws · CPC title

• Y10T279/3451

  Nonseparable or built-in · CPC title

• B23B2231/06

  Chucks for handtools having means for opening and closing the jaws using the driving motor of the handtool · CPC title

• Y10T279/27

  Separate chuck-actuating power source · CPC title