Drywall screwdriver

Patent metadata

Field	Value
Publication number	US-9427850-B2
Application number	US-201214130075-A
Country	US
Kind code	B2
Filing date	Jun 1, 2012
Priority date	Jun 30, 2011
Publication date	Aug 30, 2016
Grant date	Aug 30, 2016

Abstract

A drywall screwdriver includes a housing, an element delimiting the depth of engagement, a drive unit, an outlet spindle, and a planetary gear that comprises at least one hollow wheel. The drywall screwdriver further comprises at least one support element that is different from a housing element and that at least partially surrounds the ring gear of the planetary gear.

First claim

The invention claimed is:

1. A drywall screwdriver comprising:
a housing;
a screw-in depth limiting element;
a drive unit;
an output spindle;
a planetary gearing including at least one ring gear; and
at least one support element, which differs from a housing element and which at least partially embraces the at least one ring gear of the planetary gearing,
wherein the support element includes a collar extending at least partially radially inwardly, the collar having at least one recess.

2. The drywall screwdriver as claimed in claim 1 , wherein the support element accommodates the ring gear of the planetary gearing with at least one of a radial play and an axial play.

3. The drywall screwdriver as claimed in claim 1 , wherein the ring gear of the planetary gearing includes at least one projection in an axial direction.

4. The drywall screwdriver as claimed in claim 1 , wherein:
the ring gear of the planetary gearing includes at least one projection in an axial direction, and
the at least one projection of the ring gear extends through the at least one recess of the collar of the support element into a housing recess of the housing.

5. The drywall screwdriver as claimed in claim 1 , wherein the planetary gearing includes at least one bearing unit, which is at least partially axially supported against the collar of the support element.

6. The drywall screwdriver as claimed in claim 1 , wherein the housing includes at least one gear casing and at least one motor casing.

7. The drywall screwdriver as claimed in claim 6 , wherein the support element is accommodated at an outer diameter without play in the at least one gear casing and the at least one motor casing.

8. The drywall screwdriver as claimed in claim 6 , further comprising:
at least one cover plate disposed in the at least one motor casing and against which the ring gear and the support element are at least partially axially supported.

9. The drywall screwdriver as claimed in claim 6 , wherein the support element connects the gear casing and the motor casing in the manner of a socket.

10. A drywall screwdriver comprising:
a housing that includes:
at least one gear casing; and
at least one motor casing;

a screw-in depth limiting element;
a drive unit;
an output spindle;
a planetary gearing including at least one ring gear; and

at least one support element, which differs from a housing element and which at least partially embraces the at least one ring gear of the planetary gearing,
wherein the support element is accommodated at an outer diameter without play in the at least one gear casing and the at least one motor casing.

11. The drywall screwdriver as claimed in claim 10 , wherein the support element accommodates the ring gear of the planetary gearing with at least one of a radial play and an axial play.

12. The drywall screwdriver as claimed in claim 10 , wherein the ring gear of the planetary gearing includes at least one projection in an axial direction.

13. The drywall screwdriver as claimed in claim 10 , wherein the support element includes a collar extending at least partially radially inwardly, the collar having at least one recess.

14. The drywall screwdriver as claimed in claim 13 , wherein:
the ring gear of the planetary gearing includes at least one projection in an axial direction, and
the at least one projection of the ring gear extends through the at least one recess of the collar of the support element into a housing recess of the housing.

15. The drywall screwdriver as claimed in claim 13 , wherein the planetary gearing includes at least one bearing unit, which is at least partially axially supported against the collar of the support element.

16. The drywall screwdriver as claimed in claim 10 , further comprising:
at least one cover plate disposed in the at least one motor casing and against which the ring gear and the support element are at least partially axially supported.

17. The drywall screwdriver as claimed in claim 10 , wherein the support element connects the gear casing and the motor casing in the manner of a socket.

Assignees

• Ullrich Andre
• Froehling Holger
• Bosch Gmbh Robert

Inventors

• Ullrich Andre
• Froehling Holger

Classifications

• B25B21/00 Primary

  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

• B25B23/0064

  Means for adjusting screwing depth · CPC title