# US 12,214,429 B2 · Hand-held power tool with a motor support for a drive motor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,214,429 B2 - Document ID: US12214429B2 - Status: Granted - Kind: B2 - Application number: 17/969,213 - Filed: 2022-10-19 - Published: 2023-05-04 - Granted: 2025-02-04 - Earliest claimed: 2021-11-03 - Assignees: Robert Bosch GmbH - Applicants: Robert Bosch GmbH - Inventors: Fritz Schlegel; Ralf Maier - Web page: https://patentgrep.com/patent/US12214429B2 ## CPC - B23B 45/001: {Housing of the drill, e.g. handgrip} - B25D 17/00: Details of, or accessories for, portable power-driven percussive tools {(details or components, e.g. casings, bodies, of portable power-driven tools not particularly related to the operation performed B25F5/00)} - B23B 45/008: {Gear boxes, clutches, bearings, feeding mechanisms or like equipment} - B25D 16/00: Portable percussive machines with superimposed rotation {, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit (combined percussion and rotary drilling adapted for earth drilling E21B6/00)} - B25F 5/02: Construction of casings, bodies or handles {(B25F5/006, B25F5/008 take precedence)} - B25D 2250/121: Housing details - B23B: TURNING; BORING (arrangements for copying or controlling B23Q) - B25D: PERCUSSIVE TOOLS {(percussive machines for forging B21J; hand-held drilling machines, in general B23B45/00, for wood B27C3/08; drilling machines, used for mining or quarrying, with reciprocating tool which is turned intermittently when out of contact with the working face E21B1/00)} - B25F: COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR {(machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass B23P23/00 and subgroups)} ## Abstract A hand-held power tool, in particular a hammer drill, includes a tool holder and a housing which has two housing half-shells. The hand-held power tool further includes a drive unit for driving a tool holder arranged in the housing. The drive unit includes at least one drive motor arranged in a motor support and a gear unit arranged in a gear unit housing. The motor support is connected directly to at least one of the two housing half-shells via at least one non-positive connection and at least one positive-locking connection. A relevant fastening axis is assigned to the at least one non-positive connection and to the at least one positive-locking connection. The fastening axis is arranged at right angles to and at a distance from an axis of rotation assigned to the tool holder. ## Claims ### Claim 1 A hand-held power tool, comprising: a tool holder; a housing which has two housing half-shells; and a drive unit arranged in the housing and configured to drive the tool holder, wherein the drive unit has (i) at least one drive motor arranged in a motor support, and (ii) a gear unit arranged in a gear unit housing, wherein the motor support is connected directly to at least one of the two housing half-shells via (i) at least one non-positive connection, and (ii) at least one positive-locking connection, wherein a relevant fastening axis is assigned to the at least one non-positive connection and to the at least one positive-locking connection, and wherein the fastening axis is arranged at right angles to and at a distance from an axis of rotation assigned to the tool holder, and wherein the motor support has an outer surface on which at least one fastening rib arranged along the axis of rotation, the at least one fastening rib including a screw eye formed at right angles to the axis of rotation for the formation of the at least one non-positive connection to the at least one of the two housing half-shells. ### Claim 2 (depends on 1) The hand-held power tool according to claim 1, wherein the outer surface of the motor support has at least one positioning opening formed along the fastening axis for the formation of the at least one positive-locking connection to the at least one of the two housing half-shells. ### Claim 3 (depends on 2) The hand-held power tool according to claim 2, wherein the inner side of the at least one of the two housing half-shells has at least one positioning boss arranged along the fastening axis and assigned to the positioning opening for the formation of the at least one positive-locking connection to the motor support. ### Claim 4 (depends on 1) The hand-held power tool according to claim 1, wherein the motor support is formed in one piece. ### Claim 5 (depends on 1) The hand-held power tool according to claim 1, wherein: the outer surface of the motor support has at least two screw bosses oriented along the axis of rotation, and the motor support is fastened to the gear unit housing via the at least two screw bosses. ### Claim 6 (depends on 1) The hand-held power tool according to claim 1, wherein an intermediate flange is arranged between the motor support and the gear unit housing. ### Claim 7 (depends on 1) The hand-held power tool according to claim 1, wherein the hand-held power drill is a hammer drill. ### Claim 8 A hand-held power tool, comprising: a tool holder; a housing which has two housing half-shells; and a drive unit arranged in the housing and configured to drive the tool holder, wherein the drive unit has (i) at least one drive motor arranged in a motor support, and (ii) a gear unit arranged in a gear unit housing, wherein the motor support is connected directly to at least one of the two housing half-shells via (i) at least one non-positive connection, and (ii) at least one positive-locking connection, wherein a relevant fastening axis is assigned to the at least one non-positive connection and to the at least one positive-locking connection, and wherein the fastening axis is arranged at right angles to and at a distance from an axis of rotation assigned to the tool holder, wherein the motor support has an outer surface that has at least one fastening rib arranged along the axis of rotation with a screw eye formed at right angles to the axis of rotation for the formation of the at least one non-positive connection to the at least one of the two housing half-shells, and wherein the at least one of the two housing half-shells has an inner side facing the motor support that includes at least one screw boss arranged along the fastening axis and assigned to the screw eye for the formation of the at least one non-positive connection to the motor support. ### Claim 9 (depends on 8) The hand-held power tool according to claim 8, wherein the at least one screw boss has a pressing surface against which the fastening rib is applied. ### Claim 10 (depends on 9) The hand-held power tool according to claim 9, wherein: the two housing half-shells each have at least one screw boss with an associated pressing surface, the screw bosses are configured to be complementary to one another, the motor support is arranged between the two pressing surfaces, and the two housing half-shells and the motor support are connected to one another by way of a screw. ### Claim 11 (depends on 10) The hand-held power tool according to claim 10, wherein the fastening rib is arranged between the two pressing surfaces. ### Claim 12 (depends on 8) The hand-held power tool according to claim 8, wherein the outer surface of the motor support has at least one positioning opening formed along the fastening axis for the formation of the at least one positive-locking connection to the at least one of the two housing half-shells. ### Claim 13 (depends on 12) The hand-held power tool according to claim 12, wherein the inner side of the at least one of the two housing half-shells has at least one positioning boss arranged along the fastening axis and assigned to the positioning opening for the formation of the at least one positive-locking connection to the motor support. ### Claim 14 (depends on 8) The hand-held power tool according to claim 8, wherein the motor support is formed in one piece. ### Claim 15 (depends on 8) The hand-held power tool according to claim 8, wherein: the outer surface of the motor support has at least two screw bosses oriented along the axis of rotation, and the motor support is fastened to the gear unit housing via the at least two screw bosses. ### Claim 16 (depends on 8) The hand-held power tool according to claim 8, wherein an intermediate flange is arranged between the motor support and the gear unit housing. ### Claim 17 (depends on 8) The hand-held power tool according to claim 8, wherein the hand-held power drill is a hammer drill.