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US 8,282,446 B2Granted
Guard attachment device
AssigneeRobert Bosch GmbH
InventorsMaria-Margareta Sulea, Stefan Heess, Juergen Wiker, Peter Stierle
Life of this patent
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Abstract
The invention is based on a protective hood fastening device having a fastening element (12a-12n) for fastening a protective hood (14a-14n) which is intended for partly enclosing a rotating application tool on a body (16a-16n) of an electric tool (10a-10n). It is proposed that the fastening element (12a-12n) comprise at least one latching element (18a-18n) for locking the protective hood (14a-14n) against rotation relative to the body (16a-16n) of the electric tool (10a-10n).
Claims19
A guard attachment device, comprising:
- a fastening unit for attaching a guard (14b;
- 14d;
- 14e), which is provided to partially enclose a rotating insertion tool, to a body (16b;
- 16d;
- 16e) of a power tool (10b;
- 10d;
- 10e);
- wherein the fastening unit includes at least two handling elements (20b, 20b′;
- 20d, 20d′;
- 20e, 20e′) designed as levers, wherein the fastening unit further includes at least two detent elements (18b, 18b′;
- 18d, 18d′;
- 18e, 18e′) for preventing the guard (14b;
- 14d;
- 14e) from rotating relative to the body (16b;
- 16d;
- 16e) of the power tool (10b;
- 10d;
- 10e);
- wherein the at least two detent elements (18b, 18b′;
- 18d, 18d′;
- 18e, 18e′) are mirror-symmetrically and movably arranged on the tool body (16b;
- 16d;
- 16e);
- wherein the at least two handling elements (20b, 20b′;
- 20d, 20d′;
- 20e, 20e′) designed as levers are provided for manually releasing a snap-in connection established by the detent elements (18b, 18b′;
- 18d, 18d′;
- 18e, 18e′) between the body (16b;
- 16d;
- 16e) of the power tool (10b;
- 10d;
- 10e) and the guard (14b;
- 14d;
- 14e);
- and
- wherein to each of the at least two detent elements (18b, 18b′;
- 18d, 18d′;
- 18e, 18e′) one of the at least two handling elements (20b, 20b′;
- 20d, 20d′;
- 20e, 20e′) designed as levers is assigned.
37 more elements
A system, comprising:
- a power tool (10b;
- 10d;
- 10e) embodied as an angle grinder comprising a guard attachment device;
- and
- a guard (14b;
- 14d;
- 14e) for attachment to a body (16b;
- 16d;
- 16e) of the power tool (10b;
- 10d;
- 10e) and for at least partially enclosing a rotating insertion tool that is insertable in the power tool (10b;
- 10d;
- 10e);
- wherein the guard attachment device includes a fastening unit for attaching the guard (14b, 14d;
- 14e) to the body (16b;
- 16d;
- 16e) of the power tool (10b;
- 10d;
- 10e),
- wherein the fastening unit includes at least two detent elements (18b, 18b′;
- 18d, 18d′;
- 18e, 18e′) for preventing the guard (14b;
- 14d;
- 14e) from rotating relative to the body (16b;
- 16d;
- 16e) of the power tool (10b;
- 10d;
- 10e);
- wherein the at least two detent elements (18b, 18b′;
- 18d, 18d′;
- 18e, 18e′) are mirror-symmetrically and movably arranged on the tool body (16b;
- 16d;
- 16e);
- wherein the fastening unit further includes at least two handling elements (20b, 20b′;
- 20d, 20d′;
- 20e, 20e′) designed as levers,
- wherein the at least two handling elements (20b, 20b′;
- 20d, 20d′;
- 20e, 20e′) designed as levers are provided for manually releasing a snap-in connection established by the detent elements (18b, 18b′;
- 18d, 18d′;
- 18e, 18e′) between the body (16b;
- 16d;
- 16e) of the power tool (10b;
- 10d;
- 10e) and the guard (14b;
- 14d;
- 14e);
- wherein to each of the at least two detent elements (18b, 18b′;
- 18d, 18d′;
- 18e, 18e′) one of the at least two handling elements (20b, 20b′;
- 20d, 20d′;
- 20e, 20e′) designed as levers is assigned;
- wherein the guard includes detent recesses (34b;
- 34d;
- 34e) in which the detent elements (18b, 18b′;
- 18d, 18d′;
- 18e, 18e′) engage in at least one state of operation for preventing the guard (14b;
- 14d;
- 14e) from rotating relative to the body (16b;
- 16d;
- 16e) of the power tool (10b;
- 10d;
- 10e);
- and
- wherein each of the recesses (34b;
- 34d;
- 34e) is assigned to a rotation position of the guard (14b;
- 14d;
- 14e) relative to the body (16b;
- 16d;
- 16e).
68 more elements
A guard attachment device, comprising:
- a fastening unit for attaching a guard (14b), which is provided to partially enclose a rotating insertion tool, to a body (16b) of a power tool (10b);
- wherein the fastening unit includes at least two handling elements (20b, 20b′) designed as levers, wherein the fastening unit further includes at least two detent elements (18b, 18b′) for preventing the guard (14b) from rotating relative to the body (16b) of the power tool (10b);
- wherein the at least two detent elements (18b, 18b′) are mirror-symmetrically and movably arranged on the tool body (16b);
- wherein the at least two handling elements (20b, 20b′) are provided for manually releasing a snap-in connection established by the detent elements (18b, 18b′) between the body (16b) of the power tool (10b) and the guard (14b);
- wherein to each of the at least two detent elements (18b, 18b′) one of the at least two handling elements (20b, 20b′) is assigned,
- wherein each of the at least two handling elements (20b, 20b′) comprises an engagement region (36b, 36b′),
- wherein the engagement regions (36b, 36b′) of each of the at least two handling elements (20b, 20b′) are located directly next to each other along a circumferential direction to achieve simultaneously releasing of the at least two detent elements (18b, 18b′) by simultaneously pressing the engagement regions (36b, 36b′) of the at least two handling elements (20b, 20b′), and
- wherein the circumferential direction is arranged in a plane perpendicular to a rotation axis of the insertion tool.
5 more elements
A guard attachment device, comprising:
- a fastening unit for attaching a guard (14d;
- 14e), which is provided to partially enclose a rotating insertion tool, to a body (16d;
- 16e) of a power tool (10d;
- 10e);
- wherein the fastening unit includes at least two handling elements (20b, 20b′;
- 20d, 20d′;
- 20e, 20e′) designed as levers, wherein the fastening unit further includes at least two detent elements (18d, 18d′;
- 18e, 18e′) for preventing the guard (14d;
- 14e) from rotating relative to the body (16d;
- 16e) of the power tool (10d;
- 10e);
- wherein the at least two detent elements (18d, 18d′;
- 18e, 18e′) are mirror-symmetrically and movably arranged on the tool body (16d;
- 16e);
- wherein the at least two handling elements (20d;
- 20e) are provided for manually releasing a snap-in connection established by the detent elements (18d, 18d′;
- 18e, 18e′) between the body (16d;
- 16e) of the power tool (10d;
- 10e) and the guard (14d;
- 14e);
- wherein to each of the at least two detent elements (18d, 18d′;
- 18e, 18e′) one of the at least two handling elements (20d, 20d′;
- 20e, 20e′) is assigned,
- wherein each of the at least two handling elements (20d, 20d′;
- 20e, 20e′) comprises an engagement region (36d, 36d′;
- 36e, 36e′),
- wherein the engagement regions (36d, 36d′;
- 36e, 36e′) of each of the at least two handling elements (20d, 20d′;
- 20e, 20e′) are displaced radially outwards relative to the body (16d;
- 16e) of the power tool (10d;
- 10e), and
- wherein the engagement regions (36d, 36d′;
- 36e, 36e′) are displaced along a circumferential direction in an angle of about 180 degrees relative to each other.
30 more elements
Dependencies are inferred from the claim text.