Drill with removable chuck

Patent metadata

Field	Value
Publication number	US-10442009-B2
Application number	US-201715647604-A
Country	US
Kind code	B2
Filing date	Jul 12, 2017
Priority date	Jan 31, 2017
Publication date	Oct 15, 2019
Grant date	Oct 15, 2019

Abstract

A power tool including a motor and a rotatable spindle driven by the motor to hold and drive a first bit. There is a recess located on the spindle. The power tool also includes a removable chuck with a lock member and a locking collar. The locking collar includes a locking position in which the locking collar biases the lock member into the recess to retain the chuck on the spindle. The locking collar also includes a release position in which the lock members are able to exit the recess and the chuck is able to be removed from the spindle by a user. The locking collar is axially movable from the locking position to the release position.

First claim

What is claimed is:

1. A power tool, comprising:
a motor;
a rotatable spindle driven by the motor, the rotatable spindle including a recess;
a screwdriver bit held in the rotatable spindle; and
a removable chuck secured to the rotatable spindle;
wherein the removable chuck includes a locking collar and a connection shaft;
wherein the connection shaft includes at least one groove;
wherein the locking collar includes at least one projection;
wherein the locking collar is biased towards a locked position in which the removable chuck is locked to the rotatable spindle;
wherein the at least one projection is engaged with the at least one groove when the locking collar is in the locked position;
wherein the locking collar is axially movable from the locked position to a release position in which the removable chuck is configured to be released from the rotatable spindle;
wherein the removable chuck includes a chuck body with a chuck body opening;
wherein the chuck body opening is generally cylindrical with a flat portion;
wherein the connection shaft includes a fitting portion which has a generally cylindrical outer surface with a flat surface so as to correspond with the chuck body opening;
wherein the fitting portion is fit in the chuck body opening;
wherein the flat surface extends longitudinally on the cylindrical outer surface;
wherein the removable chuck further includes a lock member; and
wherein the lock member is held in the recess by the at least one projection when the locking collar is in the locked position.

2. The power tool of claim 1 , wherein the locking collar moves in a direction away from the motor when moving from the locking position to the release position.

3. The power tool of claim 1 , wherein the removable chuck further comprises a bit receiving opening; and
wherein a forward end of the screwdriver bit is disposed in the bit receiving opening.

4. The power tool of claim 1 , wherein the removable chuck further includes a plurality of jaws configured to hold and drive a second bit.

5. The power tool of claim 1 , wherein the at least one projection of the locking collar is a plurality of interlock projections which project radially inwardly.

6. The power tool of claim 1 , wherein the lock member comprises a ball bearing.

7. A power tool comprising:
a motor;
a rotatable spindle driven by the motor;
a first bit held by the rotatable spindle; and
a removable chuck configured to hold and drive a second bit and including a locking ring having a locking position in which the removable chuck is locked to the spindle and a release position in which the removable chuck is capable of being removed from the spindle;
wherein the power tool is operable to in a first mode in which the removable chuck is removed and the first bit is exposed whereby the first bit is capable of being used to perform a screwdriving operation;
wherein the power tool is operable in a second mode in which the removable chuck is locked to the spindle and the first bit is covered by the removable chuck, whereby the removable chuck is capable of being driven by the motor;
wherein the power tool is configured to switch between the first mode and the second mode without removal of the first bit from the rotatable spindle;
wherein the removable chuck further includes a connection shaft;
wherein the connection shaft includes at least one groove;
wherein the locking ring includes at least one projection;
wherein the locking ring is biased towards a locked position in which the removable chuck is locked to the rotatable spindle;
wherein the at least one projection is engaged with the at least one groove when the locking ring is in the locked position;
wherein the connection shaft includes a fitting portion which has a generally cylindrical outer surface with a longitudinally extending flat surface on the cylindrical outer surface;
wherein the fitting portion is fit in a chuck body opening;
wherein, in the second mode, the locking ring moves away from the motor to move the locking ring from the locking position to the release position;
wherein the rotatable spindle includes a recess;
wherein the removable chuck further includes a lock member; and
wherein the lock member is held in the recess by the at least one projection when the locking ring is in the locked position.

8. The power tool of claim 7 , wherein the locking ring is movable in an axial direction along an axis of the chuck.

9. The power tool of claim 7 , wherein the connection shaft includes a central opening.

10. The power tool of claim 9 , wherein the rotatable spindle fits into the central opening.

11. A power tool, comprising:
a motor;
a spindle rotatably driven by the motor, the spindle including a recess;
a screwdriver bit held by the spindle; and
a chuck removably secured to the spindle, the chuck including a lock member and a locking collar;
wherein the locking collar includes a locking position in which the locking collar biases the lock member into the recess to retain the chuck on the spindle;
wherein the locking collar includes a release position in which the lock member is able to exit the recess and the chuck is able to be removed from the spindle by a user;
wherein the locking collar moves axially away from the motor to move from the locking position to the release position; and
wherein the locking collar is biased towards the locking position;
wherein the removable chuck further includes a connection shaft;
wherein the removable chuck includes a chuck body with a chuck body opening;
wherein the chuck body opening is generally cylindrical with a flat portion;
wherein the connection shaft includes a fitting portion which has a generally cylindrical circumferential outer surface with a flat surface on the circumferential outer surface so as to correspond with the chuck body opening;
wherein the flat surface extends longitudinally on the cylindrical outer surface; and
wherein the fitting portion is fit in the chuck body opening.

12. The power tool of claim 11 , wherein the chuck further comprises a bit receiving opening in which the screwdriver bit held by the spindle is received when the chuck is retained on the spindle.

13. The power tool of claim 11 , wherein the chuck further includes a plurality of jaws configured to hold and drive a second bit.

14. The power tool of claim 11 , wherein the connection shaft holds the lock member.

15. The power tool of claim 11 , wherein the lock member comprises a ball bearing.

Assignees

• Black & Decker Inc

Inventors

• Sergyeyenko Oleksiy
• Bailey Sean

Classifications

• B23B2231/38

  Keyless chucks for hand tools · CPC title

• B23B45/003

  Attachments · CPC title

• B23B31/10

  characterised by the retaining or gripping devices or their immediate operating means · CPC title

• B23B45/02 Primary

  driven by electric power · CPC title

• B25B21/007

  Attachments for drilling apparatus for screw or nut setting or loosening · CPC title