# US 2023/0264334 A1 · Striking Mechanism Device for a Hand-Held Power Tool > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0264334 A1 - Document ID: US20230264334A1 - Status: Published application - Kind: A1 - Application number: 18/004,852 - Filed: 2021-06-21 - Published: 2023-08-24 - Earliest claimed: 2020-07-14 - Assignees: Robert Bosch GmbH - Applicants: Robert Bosch GmbH - Inventors: Immanuel Werner - Web page: https://patentgrep.com/patent/US20230264334A1 ## CPC - B25D 17/06: Hammer pistons; Anvils {; Guide-sleeves for pistons} - B21D 5/00: Bending sheet metal along straight lines, e.g. to form simple curves (B21D11/06 - B21D11/18 take precedence; corrugating sheet metal B21D13/00; as edge treatment B21D19/00) - B21C 37/06: of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes - B21D 5/10: for making tubes - B25D 2217/0019: Guide-sleeves - 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)} - B21D: WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL (working or processing of wire B21F) - B21C: MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL ## Abstract A striking mechanism device for a hand-held power tool has at least one hammer tube, in particular made of sheet metal. The hammer tube being is provided to guide a hammer and/or a drive piston. The hammer tube is seam-freely longitudinally slit over at least substantially the entire longitudinal extent of the hammer tube. ## Claims ### Claim 1 A striking mechanism device for a hand-held power tool, comprising: at least one hammer tube configured to guide a striker and/or a drive piston, wherein the at least one hammer tube is designed to be seamlessly longitudinally slotted over at least substantially the entire longitudinal extension of the at least one hammer tube. ### Claim 2 (depends on 1) The striking mechanism device according to claim 1, wherein the at least one hammer tube has two free longitudinal edges which are configured to contact each other without a material bond in at least one operating state. ### Claim 3 (depends on 1) The striking mechanism device according to claim 1, wherein: the at least one hammer tube has two free longitudinal edges, and a cavity or a space is formed between the two free longitudinal edges. ### Claim 4 (depends on 1) The striking mechanism device according to claim 1, further comprising: at least one cover element which is configured to contact, at least in one operating state, an outer surface of the at least one hammer tube and overlap a longitudinal slot of the at least one hammer tube in such a way that a gap seal is defined between the longitudinal slot and the cover element. ### Claim 5 (depends on 1) The striking mechanism device according to claim 1, further comprising: a cover element which is configured to contact, at least in one operating state, an outer surface of the at least one hammer tube, and a hammer tube guide element in which the at least one hammer tube is arranged, wherein at least one recess is formed on an inner side of the hammer tube guide element along a circumferential direction of the hammer tube guide element, and wherein the cover element is arranged in the at least one recess. ### Claim 6 (depends on 1) The striking mechanism device according to claim 1, further comprising: a cover element which is configured to contact, at least in one operating state, an outer surface of the at least one hammer tube, and a hammer tube guide element in which the at least one hammer tube is arranged, wherein the hammer tube guide element has at least one elongate elevation which forms the cover element. ### Claim 7 (depends on 1) The striking mechanism device according to claim 1, further comprising: a cover element which contacts an outer surface of the at least one hammer tube, the cover element being formed by an element glued to the at least one hammer tube. ### Claim 8 (depends on 1) The striking mechanism device according to claim 1, further comprising: a cover element which contacts an outer surface of the at least one hammer tube, the cover element being formed by a rubber and/or a foam element. ### Claim 9 (depends on 1) The striking mechanism device according to claim 1, further comprising a cover element which contacts an outer surface of the at least one hammer tube, wherein: the cover element is formed as a tubular element with at least one ventilation opening arranged in a peripheral surface of the cover element, and the ventilation opening is configured to align, in at least one operating state, with at least one transverse ventilation opening formed in a lateral surface of the at least one hammer tube. ### Claim 10 (depends on 1) The striking mechanism device according to claim 1, further comprising: a hammer tube guide element in which the at least one hammer tube is arranged, at least one positioning element formed on the at least one hammer tube and configured for axial positioning and/or for positioning in a circumferential direction of the at least one hammer tube relative to the hammer tube guide element, wherein the positioning element is designed as an outwardly directed tab. ### Claim 11 (depends on 1) The striking mechanism device according to claim 1, further comprising: at least one clamping element; and a hammer tube guide element in which the at least one hammer tube is arranged, wherein the clamping element is configured to axially clamp the at least one hammer tube with the hammer tube guide element. ### Claim 12 (depends on 1) A method for producing a hammer tube of a striking mechanism device according to claim 1, comprising: creating a longitudinal slot in the hammer tube over an at least substantially entire longitudinal extension of the hammer tube. ### Claim 13 (depends on 12) The method according to claim 12, wherein the creating step includes bending a plate-shaped metal sheet. ### Claim 14 (depends on 1) A pneumatic hand-held power tool having at least one striking mechanism device according to claim 1. ### Claim 15 (depends on 1) The striking mechanism device according to claim 1, wherein the at least one hammer tube is made of sheet metal. ### Claim 16 (depends on 14) The pneumatic hand-held power tool according to claim 14, wherein the pneumatic hand-held power tool is a hammer drill and/or a chisel hammer.