Portable power tool

Patent metadata

Field	Value
Publication number	US-10029359-B2
Application number	US-201414534671-A
Country	US
Kind code	B2
Filing date	Nov 6, 2014
Priority date	Nov 6, 2013
Publication date	Jul 24, 2018
Grant date	Jul 24, 2018

Abstract

A portable power tool includes a drive motor configured to generate torque, a transmission including a plurality of transmission gears positioned in a housing and configured to transmit torque generated by the drive motor to a drive shaft, a first adjusting element positioned on the housing, and a first sensor configured to detect a position of the first adjusting element. The first adjusting element is configured to set at least one of the torque and a transmission gear of the plurality of transmission gears. The first sensor is configured to transmit a first signal corresponding to the position of the first adjusting element to an electronic control element.

First claim

What is claimed is:

1. A portable power tool, comprising:
a drive motor configured to generate torque;
a transmission including a plurality of transmission gears positioned in a housing, the transmission configured to transmit the torque generated by the drive motor to a drive shaft;
a first adjusting element accessible from outside the housing and configured to set a transmission gear of the plurality of transmission gears;
a first sensor configured to detect a position of the first adjusting element and transmit a first signal corresponding to the position of the first adjusting element to an electronic control element;
a second adjusting element accessible from outside the housing and configured to set the torque;
a second sensor configured to detect a position of the second adjusting element and transmit a second signal corresponding to the position of the second adjusting element to the electronic control element;
an adjusting ring positioned in a radial direction beneath the first adjusting element, and displaceable in a circumferential direction of the housing, wherein the adjusting ring has a channel defined in the circumferential direction; and
an actuator connected to the housing and including a connecting element positioned within the channel of the adjusting ring, the actuator configured to be displaceable only in an axial direction of the portable power tool.

2. The portable power tool according to claim 1 , wherein the electronic control element is configured to activate a defined operating state of the portable power tool with a combination of predefined parameters depending on the corresponding first signal transmitted by the first sensor.

3. The portable power tool according to claim 2 , further comprising an optical display device configured to display the operating state, activated by the electronic control element, of the portable power tool.

4. The portable power tool according to claim 1 , wherein the first adjusting element is a switch configured to be directly actuated mechanically.

5. The portable power tool according to claim 4 , wherein the switch is configured as at least one of a slide switch, a pressure switch and a switch actuated via sensors.

6. The portable power tool according to claim 1 , wherein the first adjusting element is a slide switch configured to be displaced in a circumferential direction of the housing.

7. The portable power tool according to claim 1 , wherein the adjusting ring is connected to the first adjusting element via the coupling element such that movement of the first adjusting element is transmitted to the adjusting ring.

8. The portable power tool according to claim 1 , wherein the channel includes a first portion extending obliquely to the circumferential direction, and a second portion extending in the circumferential direction.

9. The portable power tool according to claim 8 , wherein:
when the connecting element is located in a region of the first portion, rotational movement of the adjusting ring in the circumferential direction moves the actuator axially; and
when the connecting element is located in a region of the second portion, rotational movement of the adjusting ring in the circumferential direction does not bring about movement of the actuator in the axial or circumferential directions.

10. The portable power tool according to claim 1 , wherein:
the housing includes a first guide element defined in the circumferential direction; and
the adjusting ring includes a second guide element defined in the circumferential direction configured to interact with the first guide element such that a rotational movement of the adjusting ring in the circumferential direction brings about an axial movement of the actuator.

11. The portable power tool according to claim 1 , wherein:
a ring gear of the plurality of transmission gears is connected to the actuator in a form-fitting manner such that a displacement of the actuator in the axial direction causes an axial movement of the ring gear; and
the axial movement of the ring gear causes engagement of the transmission in at least two different speed stages.

12. The portable power tool according to claim 11 , wherein the ring gear is connected to the actuator in a form-fitting manner in the axial direction by a connecting element.

13. The portable power tool according to claim 1 , further comprising a spring element configured to hold the first adjusting element in different positions.

14. The portable power tool according to claim 1 , further comprising an optical display device configured to display the position of the first adjusting element sensed by the first sensor.

15. The portable power tool according to claim 1 , wherein the transmission is a planetary transmission.

16. The portable power tool according to claim 1 , wherein the second adjusting element comprises a pressure switch.

17. A portable power tool comprising:
a drive motor configured to generate torque;
a transmission including a plurality of transmission gears positioned in a housing, the transmission configured to transmit the torque generated by the drive motor to a drive shaft;
a first adjusting element accessible from outside the housing and configured to set a transmission gear of the plurality of transmission gears;
a first sensor configured to detect a position of the first adjusting element and transmit a first signal corresponding to the position of the first adjusting element to an electronic control element;
a second adjusting element accessible from outside the housing and configured to set the torque;
a second sensor configured to detect a position of the second adjusting element and transmit a second signal corresponding to the position of the second adjusting element to the electronic control element;
an adjusting ring configured to be displaceable in a radial direction beneath the first adjusting element, and in a circumferential direction of the housing; and
an actuator connected to the housing and including a connecting element positioned within the channel of the adjusting ring, the actuator configured to be displaceable only in an axial direction of the portable power tool,
wherein the adjusting ring is connected to the first adjusting element via a coupling element such that movement of the first adjusting element is transmitted to the adjusting ring, and
wherein the adjusting ring has a channel defined in the circumferential direction.

Assignees

• Bosch Gmbh Robert

Inventors

• Papp Gabor

Classifications

• B25F5/001 Primary

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

• B25F5/02

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