Drilling chuck

Patent metadata

Field	Value
Publication number	US-10376965-B2
Application number	US-201715609069-A
Country	US
Kind code	B2
Filing date	May 31, 2017
Priority date	Jun 1, 2016
Publication date	Aug 13, 2019
Grant date	Aug 13, 2019

Abstract

A drilling chuck for operation on an impact drilling spindle, which can be subjected to tangential loading, with a chuck body, which is connected or connectable to the impact drilling spindle in which jaw guides are formed, which run inclined to the chuck axis in which jaw guides and clamping jaws are guided, which can be adjusted by a threaded ring, with a clamping sleeve, which can be coupled in a torque-transmitting manner to the threaded ring, and with a locking device, which is adjustable between a release configuration, which enables a relative rotation of the threaded ring with respect to the chuck body and a locking configuration, which obstructs or prevents this relative rotation. The locking device is formed from a locking sleeve, which is mounted essentially rotationally fixed but axially displaceable with respect to the chuck body, which comprises at least one locking member.

First claim

What is claimed is:

1. A drilling chuck for operation on an impact drilling spindle that is subjectable to tangential loading, the drilling chuck comprising:
a chuck body connectable to the impact drilling spindle, the chuck body having jaw guides that run inclined to a chuck axis in which clamping jaws are guided that are adjusted via a threaded ring;
a clamping sleeve coupled to the threaded ring in a torque-transmitting manner, the clamping sleeve being mounted axially displaceable with respect to the chuck body;
a locking device that is adjustable between a release configuration that enables a relative rotation of the threaded ring with respect to the chuck body and a locking configuration that obstructs or prevents the relative rotation,
wherein the locking device is formed from a locking sleeve, which is mounted substantially non-rotating but axially displaceable with respect to the chuck body, the locking sleeve comprises at least one locking member,
wherein the threaded ring or a part connected thereto is assigned at least one locking recess for receiving the at least one locking member of the locking sleeve, and
wherein the at least one locking member of the locking sleeve is adjustable via the clamping sleeve between a position corresponding to the locking configuration, in which the at least one locking member is engaged in the at least one locking recess, and a position corresponding to the release configuration, in which the at least one locking member is disengaged from the at least one locking recess.

2. The drilling chuck according to claim 1 , wherein the locking device is configured to prevent, in the locking configuration, the relative rotation both in the rotational direction corresponding to the release of the drilling chuck and in the rotational direction corresponding to the retensioning of the drilling chuck.

3. The drilling chuck according to claim 1 , wherein the locking sleeve has a locking ring with a plurality of locking members, and wherein the threaded ring is assigned a receptacle ring with a plurality of locking recesses.

4. The drilling chuck according to claim 1 , wherein the locking sleeve has a support section, and wherein the clamping sleeve comprises a support shoulder for acting upon the support section in at least the locking configuration.

5. The drilling chuck according to claim 4 , wherein the support section is formed on the at least one locking member.

6. The drilling chuck according to claim 1 , wherein the locking sleeve comprises a guide portion with a non-circular cross-section, which is guided on a non-circular chuck body section of the chuck body corresponding thereto.

7. The drilling chuck according to claim 1 , wherein the locking sleeve comprises passages for the clamping jaws.

8. The drilling chuck according to claim 1 , wherein the locking sleeve is acted upon by a restoring spring.

9. The drilling chuck according to claim 8 , wherein the restoring spring is supported on an annular collar of the chuck body or on a sleeve part axially fixed with respect to the chuck body.

10. The drilling chuck according to claim 1 , wherein the threaded ring is formed of multiple parts from a driver sleeve and a clamping ring, which is in engagement with the clamping jaws, and wherein the at least one locking recess is formed on the driver sleeve, which is non-rotatably connected to the clamping ring.

11. The drilling chuck according to claim 1 , wherein the threaded ring has at least one rotary member receptacle and the clamping sleeve has at least one rotary member, the least one rotary member being accommodated within the at least one rotary member receptacle.

Assignees

• Roehm Gmbh

Inventors

• Hengsberger Patrick
• Baumann Hans
• Schenk Peter

Classifications

• B25B21/02

  with means for imparting impact to screwdriver blade or nut socket · CPC title

• B25D17/084

  Rotating chucks or sockets · CPC title

• B23B31/1238

  Jaws movement actuated by a nut with conical screw-thread · CPC title

• B25D2250/301

  Torque transmission means · CPC title

• B23B31/123 Primary

  with locking arrangements (locking arrangements for chucks with simultaneously-acting jaws moving radially actuated by one or more spiral grooves B23B31/16041) · CPC title