Back to results
US 9,168,651 B2Granted
Hand-held machine tool with a torque clutch
AssigneeRobert Bosch GmbH
InventorsJoachim Hecht, Martin Kraus
Life of this patent
Estimating the term…
Abstract
A hand-held machine tool includes a gear unit and a torque clutch that has a torque-limiting coupling allocated to the gear unit and that is assigned at least one spring element which is clamped between a limit-transfer element and a spring-holding element, and which is designed to apply a predefined spring force to the limit-transfer element axially in the direction of the torque-limiting coupling. The spring-holding element includes at least one opening, through which the at least one spring element reaches, at least sectionally.
Claims10
A hand-held machine tool, comprising:
- a drive spindle having a longitudinal axis;
- a gear unit;
- and
- a torque clutch including a torque-limiting coupling allocated to the gear unit and at least one spring element which is clamped between a limit-transfer element and a spring-holding element, the torque clutch being adapted to apply a predefined spring force to the limit-transfer element axially in the direction of the torque-limiting coupling, wherein the limit-transfer element is disposed at least partially between the torque-limiting coupling and the at least one spring element,
- wherein the spring-holding element includes at least one opening, through which the at least one spring element reaches, at least sectionally,
- wherein the spring-holding element includes an actuating section and at least one spring holder, on which the at least one opening is formed as a perforation or a cutout,
- wherein the predefined spring force of the torque clutch is adjustable within predefined limits via an assigned torque-adjusting device, the torque-adjusting device including an adjusting ring,
- wherein the adjusting ring is arranged radially outwardly and axially overlapping relative to the at least one spring element,
- wherein a maximum radial distance of the at least one spring element relative to the longitudinal axis of the drive spindle is at least as large as a maximum radial distance of the at least one spring holder relative to the longitudinal axis of the drive spindle.
6 more elements
Dependencies are inferred from the claim text.