DRILL CHUCK

• US 20150314375A1
• Filed: 04/30/2015
• Published: 11/05/2015
• Est. Priority Date: 04/30/2014
• Status: Active Grant

• Current Assignee: Roehm GmbH
• Original Assignee: Roehm GmbH
• Inventors: SCHENK, Peter
• Granted Patent: US 9,718,135 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B23B 2231/38 Keyless chucks for hand tools
• CPC Class Codes: B23B 2260/026 Bushings, e.g. adapter sleeves
• CPC Class Codes: B23B 2260/136 Springs
• CPC Class Codes: B23B 31/1071 Retention by balls balls acting as jaws B23B31/22
• CPC Class Codes: B23B 31/1238 Jaws movement actuated by a nut with conical screw-thread
• CPC Class Codes: B23Q 3/12 for securing to a spindle in general B23Q3/152 takes precedence; chucks B23B31/02
• CPC Class Codes: Y10S 279/902 Keyless type socket
• CPC Class Codes: Y10S 279/905 with ball detent
• CPC Class Codes: Y10T 279/17632 Conical sleeve
• CPC Class Codes: Y10T 279/17752 Ball or roller jaws
• CPC Class Codes: Y10T 279/3406 Adapter
• CPC Class Codes: Y10T 279/3412 Drive conversion

Abstract

A drill chuck having a chuck body that has a receptacle on its axially rearward end, having clamping jaws that can be moved relative to the chuck axis, and having a clamping sleeve that serves to move the clamping jaws. An adapter body can be placed in the receptacle and coupled in a torque-transmitting manner, which adapter body has an adapter receptacle for detachable connection to the drilling spindle of a power drill and has, in the wall of the adapter receptacle, at least one detent element that can be moved by a release sleeve.

Claims

1. A drill chuck comprising:

a chuck body that has a receptacle on an axially rearward end;

clamping jaws that are movable relative to a chuck axis; and

a clamping sleeve that is adapted to move the clamping jaws; and

an adapter body arrangable in the receptacle and coupled in a torque-transmitting manner, the adapter body having an adapter receptacle for detachable connection to a drilling spindle of a power drill and having in a wall of the adapter receptacle at least one detent element that is moveable by a release sleeve.

2. The drill chuck according to claim 1, wherein the chuck body and the adapter body are connectable by a threaded joint, and wherein a drive insert is adapted to be pressed into the adapter body after the threaded joint is established to wedge threads and transmit torque from the drilling spindle.

3. The drill chuck according to claim 2, wherein the drive insert is non-round in cross-section and projects into the adapter receptacle.

4. The drill chuck according to claim 1, wherein a control cam is provided on an inner circumference of the release sleeve to bear against a detent element or a detent ball, and wherein a return spring bears axially against the release sleeve.

5. The drill chuck according to claim 4, wherein the return spring braces against the clamping sleeve when the adapter body is attached to the chuck body.