Handle for a hand-guided power tool and trimmer

Patent metadata

Field	Value
Publication number	US-12349625-B2
Application number	US-202318522306-A
Country	US
Kind code	B2
Filing date	Nov 29, 2023
Priority date	Apr 9, 2020
Publication date	Jul 8, 2025
Grant date	Jul 8, 2025

Abstract

A power tool handle has a shaft with a fastening end securing the handle on the power tool and with a free end. The handle has an outer side for supporting a palm of a hand. First and second operating elements are pivotably supported at the shaft about first and second pivot axes, respectively. The first operating element controls a power tool drive motor. In non-actuated position, the second operating element prevents a control action of the first operating element and has an actuating section projecting from the shaft and having a first and a second end. The first end is closer to the fastening end of the shaft than the second end. The second end is closer to the free end of the shaft. The second pivot axis is closer to the first end than to the second end. A trimmer is provided with such a handle.

First claim

What is claimed is:

1. A handle for a hand-guided power tool, the handle comprising:
a shaft comprising a fastening end and a free end, the fastening end configured to secure the handle on the power tool, wherein the handle has a longitudinal axis;
an outer side configured to at least partially support a palm of a hand of a user;
an inner side positioned opposite the outer side:
a first operating element supported at the shaft so as to be pivotable about a first pivot axis and a second operating element supported at the shaft so as to be pivotable about a second pivot axis;
wherein the first operating element comprises a first actuating section and is configured to control a drive motor of the power tool and wherein the second operating element is configured to prevent in a non-actuated position a control action of the first operating element on the drive motor;
wherein the second operating element in the non-actuated position comprises a second actuating section projecting from the shaft, wherein the second actuating section comprises a first end and a second end, wherein the first end of the second actuating section is positioned closer to the fastening end of the shaft than the second end of the second actuating section, and wherein the second end of the second actuating section is positioned closer to the free end of the shaft than the first end of the second actuating section; and
wherein the second pivot axis is arranged closer to the first end of the second actuating section than to the second end of the second actuating section.

2. The handle according to claim 1 , wherein the longitudinal axis of the handle is oriented perpendicularly to the first pivot axis and oriented perpendicularly to the second pivot axis, wherein the first pivot axis and the second pivot axis, viewed in a viewing direction along the longitudinal axis of the handle, are positioned at an angle of less than 180° in relation to each other.

3. The handle according to claim 1 , wherein the longitudinal axis of the handle is oriented perpendicularly to the first pivot axis and oriented perpendicularly to the second pivot axis, wherein the first pivot axis and the second pivot axis, viewed in a viewing direction along the longitudinal axis of the handle, are positioned at an angle of less than 120° in relation to each other.

4. The handle according to claim 1 , wherein the actuating section of the second operating element in an actuated position of the second operating element at no point thereof projects by more than 3 mm past an outer contour of the shaft.

5. The handle according to claim 1 , wherein the first actuating section of the first operating element in a non-actuated position projects from the shaft, wherein the first actuating section of the first operating element comprises a first end and a second end, wherein the first end of the first actuating section is positioned closer to the fastening end of the shaft than the second end of the first actuating section, and wherein the second end of the first actuating section is positioned closer to the free end of the shaft than the first end of the first actuating section, and wherein the first pivot axis is arranged closer to the second end of the first actuating section than to the first end of the first actuating section.

6. The handle according to claim 1 , wherein at least one of the first and second actuating sections comprises a distance of less than 7 cm in relation to the free end of the shaft.

7. The handle according to claim 1 , wherein the first actuating section and the second actuating section overlap each other across a length section of the shaft, wherein a length of the length section of the shaft, measured in a direction of the longitudinal axis of the handle, amounts to at least 30% of a length of the first actuating section, measured in the direction of the longitudinal axis of the handle.

8. The handle according to claim 1 , wherein the first actuating section and the second actuating section overlap each other across a length section of the shaft, wherein a length of the length section of the shaft, measured in a direction of the longitudinal axis of the handle, amounts to at least 50% of a length of the first actuating section, measured in the direction of the longitudinal axis of the handle.

9. The handle according to claim 1 , wherein the first operating element is arranged at a front side of the handle, wherein the front side of the handle extends in a circumferential direction of the shaft between the inner side and the outer side and is configured to support fingers of the user, and wherein the second operating element is arranged at the outer side.

10. The handle according to claim 1 , wherein the free end of the shaft provides a support surface for a hand of a user.

11. The handle according to claim 10 , wherein the support surface passes with a continuous rounded portion into a rear side of the handle, wherein the rear side of the handle extends in a circumferential direction of the shaft between the inner side and the outer side.

12. The handle according to claim 11 , wherein, viewed in a side view looking at the outer side, the rounded portion comprises at every point thereof a radius of at least 1.5 cm.

13. The handle according to claim 11 , wherein, viewed in a side view looking at the outer side, the rounded portion comprises at every point thereof a radius of at least 2 cm.

14. The handle according to claim 1 , further comprising a third operating element, wherein the third operating element is arranged at the inner side, wherein the third operating element comprises an actuating position, wherein the third operating element, when moved from a non-actuated position to an actuated position, begins to carry out an actuating stroke in the actuating position, and wherein the third operating element in the actuating position, viewed in a direction along the longitudinal axis of the handle toward the fastening end, projects by at most 1 mm past an outer contour of the handle.

15. The handle according to claim 1 , further comprising a third operating element, wherein the third operating element is arranged at the inner side, wherein the third operating element comprises an actuating position, wherein the third operating element, when moved from a non-actuated position to an actuated position, begins to carry out an actuating stroke in the actuating position, and wherein the third operating element in the actuating position, viewed in a direction along the longitudinal axis of the handle toward the fastening end, is positioned behind an outer contour of the handle.

16. The handle according to claim 15 , wherein the third operating element in the non-actuated position projects at least at one side past a contour of the shaft.

17. The handle according to claim 15 , wherein the third operating element comprises a side facing the fastening end, wherein the side facing the fastening end projects in the non-actuated position of the operating element past a contour of the shaft.

18. A trimmer comprising:
a guide tube;
a tool unit connected to an end of the guide tube;
a handlebar comprising a bar secured to the guide tube and further comprising handles, wherein each handle is arranged at a respective end of the bar;
wherein the handles each comprise a shaft comprising a fastening end and a free end, the fastening end configured to secure the handle to the end of the bar;
wherein the handles each comprise a front side facing the tool unit end and an oppositely positioned rear side;
wherein the handles each co

Assignees

• Stihl Ag & Co Kg Andreas

Inventors

• Bicheler Liv
• Mandel Roland
• Haug Simon

Classifications

• A01D2034/907

  Control levers for portable mowing machines · CPC title

• B25F5/02

  Construction of casings, bodies or handles {(B25F5/006, B25F5/008 take precedence)} · CPC title

• A01D34/10

  with motor driven cutters or wheels · CPC title

• A01D34/902 Primary

  Ergonomic provisions · CPC title

• A01D34/40 Primary

  Other details · CPC title