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US 10,300,590 B2Granted
Hand-held power tool which includes a shiftable transmission
AssigneeRobert Bosch GmbH
InventorsJens Brennenstuhl, Heiko Roehm, Andreas Heber
Life of this patent
Estimating the term…
Abstract
A hand-held power tool which includes a shiftable transmission that is shiftable at least between a first gear and a second gear via a shifting member, in which the shifting member is coupled to a spring element, which for the gear shifting is indirectly or directly actuatable at least via a first and a second shifting element. A coupling element which is coupleable to the spring element is associated with the first shifting element, and the coupling element is configured for allowing gear shifting by actuating the first shifting element only for the case that the second shifting element is in a predefined gear shift position.
Claims34
A hand-held power tool, comprising:
- a shiftable transmission, which is shiftable at least between a first gear and a second gear via a shifting member;
- wherein the shifting member is coupled to a spring element, which for the gear shifting is indirectly or directly actuatable at least via a first and a second shifting element, a coupling element which is coupleable to the spring element being associated with the first shifting element, the coupling element being configured to allow gear shifting by actuating the first shifting element only for the case that the second shifting element is in a predefined gear shift position,
- wherein the coupling element includes a control cam which is engaged with a guide cam formed on the first shifting element, so that the coupling element is pivotable about an associated transverse axis with the first shifting element to actuate the spring element.
A hand-held power tool, comprising:
- a shiftable transmission, which is shiftable at least between a first gear and a second gear via a shifting member;
- wherein the shifting member is coupled to a spring element, which for the gear shifting is indirectly or directly actuatable at least via a first and a second shifting element,
- a coupling element which is associated with the first shifting element, the coupling element being configured for coupling the spring element to the first shifting element when the first shifting element is actuated and only for the case that the second shifting element is in a predefined gear shift position,
- wherein the coupling element includes a control cam which is engaged with a guide cam formed on the first shifting element, so that the coupling element is pivotable about an associated transverse axis with the first shifting element to actuate the spring element.
1 more element
A hand-held power tool, comprising:
- a shiftable transmission, which is shiftable at least between a first gear and a second gear via a shifting member;
- wherein the shifting member is coupled to a spring element, which for the gear shifting is indirectly or directly actuatable at least via a first and a second shifting element,
- a coupling element which is associated with the first shifting element, the coupling element being configured for coupling the spring element to the first shifting element when the first shifting element is actuated and only for the case that the second shifting element is in a predefined gear shift position,
- wherein the spring element includes at least two radially inwardly directed cam latches which are coupled to the shifting member, and which are configured for moving the shifting member into a particular shift position which is associated with the first or second gear when the spring element is actuated for the gear shifting.
1 more element
A hand-held power tool, comprising:
- a shiftable transmission, which is shiftable at least between a first gear and a second gear via a shifting member;
- wherein the shifting member is coupled to a spring element, which for the gear shifting is indirectly or directly actuatable at least via a first and a second shifting element,
- a coupling element which is associated with the first shifting element, the coupling element being configured for coupling the spring element to the first shifting element when the first shifting element is actuated and only for the case that the second shifting element is in a predefined gear shift position,
- wherein, based on the second shifting element being in the predefined gear shift position, the coupling element is configured to couple the spring element to the first shifting element when the first shifting element is actuated,
- wherein, based on the second shifting element being in another gear shift position, the coupling element is configured to not couple the spring element to the first shifting element when the first shifting element is actuated.
2 more elements
A hand-held power tool, comprising:
- a shiftable transmission for driving a drive shaft, which is situated in a gear housing and is shiftable at least between a first gear and a second gear via a shifting member;
- wherein an actuating element which is pivotably supported in the gear housing is associated with the shifting member, the actuating element being configured as a bistable spring element and situated, at least in sections, in the area between the shifting member and the gear housing, the bistable spring element being actuatable for the gear shifting, and assumes a stable shift position in at least one shift position of the shifting member associated with the first or second gear, and assumes an unstable position in an intermediate position of the shifting member which is situated between shift positions of the shifting member associated with the first and second gears,
- wherein the bistable spring element includes at least two radially outwardly directed control latches which are configured to allow an actuation of the bistable spring element for the gear shifting via at least a first or a second shifting element.
Dependencies are inferred from the claim text.