Hand-Held Power Tool

• US 20150333664A1
• Filed: 05/15/2015
• Published: 11/19/2015
• Est. Priority Date: 05/16/2014
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Bantle, Florian
• Granted Patent: US 10,454,391 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B25F 5/00 Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
• CPC Class Codes: B25F 5/001 Gearings, speed selectors, clutches or the like specially adapted for rotary tools
• CPC Class Codes: B25F 5/02 Construction of casings, bodies or handles B25F5/006, B25F5/008 take precedence
• CPC Class Codes: H02P 1/22 in either direction of rotation

Abstract

A hand-held power tool includes a housing with a handle, a transmission, a drive motor, a tool receiver, and a first switch unit. The transmission and drive motor are arranged in the housing, the transmission being configured to transmit a torque generated by the drive motor to the tool receiver, which is configured to rotate about a rotation axis. The first switch unit is configured to control the drive motor, and has a first switching element and a second switching element that are configured to operate the first switch unit and that enable an operator to influence various control variables of the drive motor. The second switching element is further configured to control a direction of the rotation of the drive motor, and upon actuation, execute a linear movement that is substantially parallel to the rotation axis.

Claims

1. A hand-held power tool, comprising:

a housing that includes a handle;

a drive motor arranged in the housing and configured to generate a torque;

a tool receiver configured to rotate about a rotation axis;

a transmission arranged in the housing and configured to transmit the torque from the drive motor to the tool receiver; and

a first switch unit configured to control the drive motor and including;

a first switching element; and

a second switching element, the second switching element being configured to control a direction of the rotation of the drive motor, and the second switching element being further configured to execute, upon actuation, a linear movement that is substantially parallel with the rotation axis.

2. The hand-held power tool according to claim 1, wherein the second switching element is configured to engage in at least two positions including:

a first position corresponding to a first direction of rotation of the drive motor which is assigned to a first screwing direction of the tool receiver; and

a second position corresponding to a second direction of rotation of the drive motor which is assigned to a second screwing direction of the tool receiver.

4. The hand-held power tool according to claim 1, wherein the second switching element is configured to engage in a third position corresponding to an interruption of a motor current, the interruption being at least one of an electrical, electromechanical, and mechanical interruption.

5. The hand-held power tool according to claim 1, the first switch unit further including a direction rotation switch, wherein the second switching element is configured to actuate the direction rotation switch.

6. The hand-held power tool according to claim 5, wherein:

the second switching element is mounted on an outside of the housing, and is connected to a switching web arranged inside the housing;

the switching web is engaged with the direction rotation switch; and

the switching web is configured and arranged so as to be movable substantially parallelwise in relation to the rotation axis.

7. The hand-held power tool according to claim 6, further comprising a connecting element configured and arranged so as to be movable substantially parallelwise in relation to the rotation axis and so as to effect the engagement between the switching web and the direction rotation switch.

8. The hand-held power tool according to claim 6, further comprising a rotary disk configured and arranged so as to be rotatable about the rotation axis and so as to effect the engagement between the switching web and the direction rotation switch

9. The hand-held power tool according to claim 6, further comprising a switch rocker configured and arranged so as to be movable substantially transversely in relation to the rotation axis and so as to effect the engagement between the switching web and the direction rotation switch.

10. The hand-held power tool according to claim 9 further comprising gate shift configured to convert a longitudinal movement of the switching web into a transverse movement of the switch rocker.

11. The hand-held power tool according to claim 1, further comprising:

a sensor configured to sense a position of the second switching element at least one of inductively, capacitively, magnetically, and optically; and

a second switching unit, wherein;

the second switching element is configured to operate the second switching unit; and

the second switching unit is configured to electronically transmit a position signal indicative of the position of the second switching element to the first switch unit.

12. The hand-held power tool according to claim 1, further comprising a switching web arranged inside the housing, wherein:

the second switching element further includes a plurality of portions arranged on an outside of the housing and connected to the switching web; and

each of the plurality of portions projects in a different direction out from the housing.

13. The hand-held power tool according to claim 1, the second switching element including at least two portions that are mounted on an outside of the housing so as to be substantially parallel and opposite in relation to each other along the rotation axis.

14. The hand-held power tool according to claim 1, wherein the second switching element is arranged in front of the first switching element along an axis.

15. The hand-held power tool according to claim 1, wherein the second switching element has a shape that follows a contour of the housing so as to enable operation of the second switching element on both sides.

16. The hand-held power tool according to claim 1, wherein the second switching element extends, at least in portions, inside the housing.

17. The hand-held power tool according to claim 1, further comprising a drive shaft, wherein:

the transmission is further configured to transmit the torque from the drive motor to a drive shaft; and

the hand-held power tool is at least one of a baton screwdriver, a percussion power drill, a multifunction tool, a drill, a driver, a cordless drill, a cordless screwdriver, a cordless drill, and a cordless driver.

3. The hand-held power tool according to claim 3, wherein:

the second switching element is closer to the tool receiver when located in the first position than when located in the second position;

the first screwing direction corresponds to a clockwise rotation of the tool receiver; and

the second screwing direction corresponds to a counterclockwise rotation of the tool receiver.