Hand-held power tool

Patent metadata

Field	Value
Publication number	US-12533787-B2
Application number	US-202318520736-A
Country	US
Kind code	B2
Filing date	Nov 28, 2023
Priority date	Nov 30, 2022
Publication date	Jan 27, 2026
Grant date	Jan 27, 2026

Abstract

A hand-held power tool includes a drive motor with a drive shaft, and a transmission which can be actuated by the drive shaft. The transmission has an intermediate shaft into which the drive shaft at least partially projects. The power tool also includes at least one drive shaft bearing arranged radially between the drive shaft and the intermediate shaft, and a tool holder which can be actuated by the drive shaft. The drive shaft further includes at least one support element, which is designed to support the drive shaft bearing in the direction of the tool holder.

First claim

The invention claimed is:

1 . A hand-held power tool comprising:
a drive motor having a drive shaft; a transmission configured to be actuated by the drive shaft, the transmission having an intermediate shaft into which the drive shaft at least partially projects; at least one drive shaft bearing arranged radially between the drive shaft and the intermediate shaft; and a tool holder configured to be actuated by the drive shaft, wherein the drive shaft includes at least one support element that is integrally formed in one piece with the drive shaft, and wherein the at least one support element is configured to support the at least one drive shaft bearing on a side of the at least one drive shaft bearing that faces toward the tool holder.

2 . The hand-held power tool according to claim 1 , wherein the at least one support element extends in a circumferential direction with respect to the drive shaft.

3 . The hand-held power tool according to claim 1 , wherein the drive shaft has at least one milling section, and a milling outlet of the at least one milling section that projects radially outwardly from the drive shaft forms the at least one support element.

4 . The hand-held power tool according to claim 3 , wherein the milling outlet has a diameter on a side facing away from the at least one drive shaft bearing that is smaller than 20 mm.

5 . The hand-held power tool according to claim 1 , wherein the at least one drive shaft bearing is supported on the at least one support element by a drive shaft bearing inner ring.

6 . The hand-held power tool according to claim 1 , wherein the intermediate shaft has at least one shoulder on which the at least one drive shaft bearing is supported on the side facing toward the tool holder.

7 . The hand-held power tool according to claim 1 , wherein the drive motor has at least one spacer element configured to support the at least one drive shaft bearing in a direction of the drive motor.

8 . The hand-held power tool according to claim 7 , wherein the at least one drive shaft bearing is arranged, in an axial direction of the drive shaft, between the at least one spacer element and the at least one support element.

9 . The hand-held power tool according to claim 7 , wherein the at least one spacer element has a collar on which the at least one drive shaft bearing is supported by a drive shaft bearing inner ring.

10 . The hand-held power tool according to claim 4 , wherein the diameter of the milling outlet is less than 15 mm.

11 . The hand-held power tool according to claim 10 , wherein the diameter of the milling outlet is less than 12 mm.

12 . The hand-held power tool according to claim 6 , wherein a drive shaft bearing outer ring of the at least one drive shaft bearing is supported on the at least one shoulder on the side of the at least one drive shaft bearing facing toward the tool holder.

13 . The hand-held power tool according to claim 3 , wherein the at least one milling section forms gear teeth that engage planetary wheels of the transmission.

14 . The hand-held power tool according to claim 13 , wherein the at least one support element is formed as a ramp extending form the at least one milling section and projecting radially outwardly from the drive shaft.

Assignees

• Bosch Gmbh Robert

Inventors

• Erbele Simon

Classifications

• B25B21/02

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

• B25F5/001 Primary

  Gearings, speed selectors, clutches or the like specially adapted for rotary tools · CPC title

• B25B21/00

  Portable power-driven screw or nut setting or loosening tools; (details or components, e.g. casings, bodies, of portable power-driven tools not particularly related to the operation performed B25F5/00; {for mounting or dismounting wheels B60B29/006}); Attachments for drilling apparatus serving the same purpose (machines B23P19/06) · CPC title

• B25F5/00 Primary

  Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for · CPC title