Handheld power tool, in particular a sander, handheld power tool device, protective device, handheld power tool system, and method for manufacturing a handheld power tool device

Patent metadata

Field	Value
Publication number	US-12397410-B2
Application number	US-202418732734-A
Country	US
Kind code	B2
Filing date	Jun 4, 2024
Priority date	Jun 9, 2023
Publication date	Aug 26, 2025
Grant date	Aug 26, 2025

Abstract

A handheld power tool device for a handheld power tool, in particular a sander, preferably an orbital sander or a random orbital sander includes a housing unit, which has a handle housing and a drive housing for holding a drive unit. The drive housing defines a drive axis of the drive unit. The power tool device further includes a damping unit which couples the drive housing to the handle housing. The drive housing includes an extension arm, which extends at least radially with respect to the drive axis and on which at least a portion of the damping unit is arranged.

First claim

The invention claimed is:

1. A handheld power tool device for a sander, comprising:
a housing unit including a handle housing and a drive housing configured to hold a drive unit, the drive housing defining a drive axis of the drive unit; and
a damping unit configured to couple the drive housing to the handle housing,
wherein the drive housing comprises an extension arm configured to extend, at least radially with respect to the drive axis and on which at least a portion of the damping unit is arranged.

2. The handheld power tool device according to claim 1 , further comprising:
a tool holder configured to hold a tool,
wherein a maximum distance of the extension arm from the drive axis is greater than a maximum distance of the tool holder from the drive axis, along a separating plane of the handle housing.

3. The handheld power tool device according to claim 1 , wherein a ratio between a maximum transverse extent of the portion of the damping unit and a minimum distance of the portion of the damping unit from a handle axis of the handle housing is at least 0.9 and at most 1.05.

4. The handheld power tool device according to claim 1 , wherein a ratio between a maximum transverse extent of the portion of the damping unit and a minimum distance of the portion of the damping unit from the drive axis is at least 0.7 and at most 0.8.

5. The handheld power tool device according to claim 3 , wherein a ratio between a maximum height of the housing unit and the minimum distance of the portion of the damping unit on the extension arm from the handle axis of the handle housing is at most 2.25.

6. The handheld power tool device according to claim 1 , wherein a ratio between a minimum distance of the portion of the damping unit from the drive axis in a direction perpendicular to the drive axis and a maximum longitudinal extent of the housing unit is greater than 0.3.

7. The handheld power tool device according to claim 1 , wherein a ratio between a minimum distance between the portion of the damping unit and the drive axis and a minimum distance between the portion of the damping unit and a handle axis of the handle housing is at least 1.2 and at most 1.3.

8. The handheld power tool device according to claim 1 , wherein the handle housing comprises a bow-shaped handle supported by the portion of the damping unit and/or the extension arm on the drive housing in order to form a closed handle recess of the bow-shaped handle.

9. The handheld power tool device according to claim 8 , wherein the portion of the damping unit and/or the extension arm is arranged in a direction of the handle axis at a height of the handle recess.

10. The handheld power tool device according to claim 1 , wherein the portion of the damping unit arranged on the extension arm comprises at least two damping elements arranged at a distance from one another.

11. The handheld power tool device according to claim 1 , wherein:
the housing unit comprises a fan housing configured to hold extraction fan, and
the extension arm is arranged on the fan housing.

12. The handheld power tool device according to claim 1 , wherein:
the drive housing comprises a motor housing configured to hold the drive unit and a fan housing configured to hold an extraction fan, and
the motor housing and the fan housing are configured to be least partially integral with one another.

13. The handheld power tool device according to claim 1 , wherein the drive housing comprises a motor housing, on which at least one damping element of the damping unit is arranged, such that the damping element is only partially enclosed by the handle housing through the damping element in a sectional plane perpendicular to the drive axis.

14. The handheld power tool device according to claim 1 , wherein:
the damping unit comprises at least one sealing element configured to block an inlet of exhaust air into the housing unit, and
the at least one sealing element is arranged between the handle housing and the drive housing.

15. A sander comprising:
a handheld power tool device according to claim 1 .

Assignees

• Bosch Gmbh Robert

Inventors

• Barth Daniel
• Esenwein Florian

Classifications

• B24B23/02

  with rotating grinding tools; Accessories therefor · CPC title

• B24B23/005

  Auxiliary devices used in connection with portable grinding machines, e.g. holders · CPC title

• B24B41/007

  Weight compensation; Temperature compensation; Vibration damping · CPC title

• B25F5/006

  Vibration damping means · CPC title

• B24B23/04

  with oscillating grinding tools; Accessories therefor · CPC title