# US 2023/0264338 A1 · Power tool > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0264338 A1 - Document ID: US20230264338A1 - Status: Published application - Kind: A1 - Application number: 18/299,898 - Filed: 2023-04-13 - Published: 2023-08-24 - Earliest claimed: 2022-02-22 - Assignees: Nanjing Chervon Industry Co., Ltd. - Applicants: Nanjing Chervon Industry Co., Ltd. - Inventors: Hanqing Zheng; Xiangqing Fu - Web page: https://patentgrep.com/patent/US20230264338A1 ## CPC - B25F 5/02: Construction of casings, bodies or handles {(B25F5/006, B25F5/008 take precedence)} - B25F 3/00: Associations of tools for different working operations with one portable power-drive means; Adapters therefor - B25F 5/00: Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for - 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 power tool includes a main housing in which a drive mechanism is disposed and a working head connected to an end of the main housing and rotating relative to the main housing about a first axis. The working head includes an output shaft and the output shaft is driven by the drive mechanism to rotate about a second axis. The main housing is provided with a window portion and the window portion is configured to display an internal structure of the power tool. ## Claims ### Claim 1 A power tool, comprising: a main housing in which a drive mechanism is disposed; and a working head connected to an end of the main housing and rotatable relative to the main housing about a first axis; wherein the working head comprises an output shaft, the output shaft is driven by the drive mechanism to rotate about a second axis, the main housing is provided with a window portion, and the window portion is configured to display an internal structure of the power tool. ### Claim 2 (depends on 1) The power tool according to claim 1, wherein the main housing comprises a grip and a connection portion, the working head is connected to the connection portion, and the window portion is formed on or connected to the connection portion. ### Claim 3 (depends on 1) The power tool according to claim 1, further comprising a connection assembly connecting the output shaft to the drive mechanism. ### Claim 4 (depends on 3) The power tool according to claim 3, wherein a position where the connection assembly is disposed corresponds to a position of the window portion. ### Claim 5 (depends on 1) The power tool according to claim 1, wherein the window portion is an opening. ### Claim 6 (depends on 4) The power tool according to claim 4, wherein the window portion comprises a cover made of a transparent or translucent material. ### Claim 7 (depends on 1) The power tool according to claim 1, wherein the main housing extends along a third axis, and the second axis rotates about the first axis to be at a plurality of angular positions relative to the third axis. ### Claim 8 (depends on 2) The power tool according to claim 2, wherein the connection portion is formed with a first accommodation space, and the working head is at least partially disposed in the first accommodation space. ### Claim 9 (depends on 8) The power tool according to claim 8, wherein the working head comprises a moving portion connected to the output shaft, and the moving portion is limited in the first accommodation space and is movable relative to the connection portion about the first axis. ### Claim 10 (depends on 3) The power tool according to claim 3, wherein the connection assembly comprises: a first connector, wherein an end of the first connector is connected to the drive mechanism, and the first connector is driven by the drive mechanism to rotate; a second connector, wherein an end of the second connector is connected to the output shaft; and a third connector connecting the first connector to the second connector and movable relative to the first connector and the second connector to transmit power outputted by the drive mechanism to the output shaft, wherein the third connector is located in the middle of the window portion. ### Claim 11 (depends on 1) The power tool according to claim 1, wherein the drive mechanism comprises: a power supply assembly comprising a battery capable of storing energy; an electric motor; and a transmission assembly connected to the electric motor and the working head. ### Claim 12 (depends on 1) The power tool according to claim 1, wherein an overall length of the power tool is less than or equal to 200 mm. ### Claim 13 (depends on 1) The power tool according to claim 1, wherein an overall length of the power tool is less than or equal to 180 mm. ### Claim 14 (depends on 11) The power tool according to claim 11, wherein a rated voltage of the power supply assembly is less than or equal to 10 V. ### Claim 15 A power tool, comprising: a main housing in which a drive mechanism is disposed; and a working head connected to an end of the main housing and rotatable relative to the main housing about a first axis; wherein the working head comprises an output shaft, the output shaft is driven by the drive mechanism to rotate about a second axis, and the main housing or the working head is provided with a window portion. ### Claim 16 A power tool, comprising: a main housing in which a drive mechanism is disposed; and a working head connected to an end of the main housing and rotatable relative to the main housing about a first axis; wherein the working head comprises an output shaft, the output shaft is driven by the drive mechanism to rotate about a second axis, the main housing is provided with a window portion, and the window portion comprises a cover made of a transparent or translucent material. ### Claim 17 (depends on 16) The power tool according to claim 16, wherein the drive mechanism comprises: a power supply assembly comprising a battery capable of storing energy; an electric motor; and a transmission assembly connected to the electric motor and the working head. ### Claim 18 (depends on 16) The power tool according to claim 16, wherein an overall length of the power tool is less than or equal to 200 mm. ### Claim 19 (depends on 16) The power tool according to claim 16, wherein an overall length of the power tool is less than or equal to 180 mm. ### Claim 20 (depends on 17) The power tool according to claim 17, wherein a rated voltage of the power supply assembly is less than or equal to 10 V. ### Claim 21 (depends on 17) The power tool according to claim 17, wherein a rated voltage of the power supply assembly is less than or equal to 6 V. ### Claim 22 (depends on 17) The power tool according to claim 17, wherein a ratio of a length of the power supply assembly to a maximum overall length of the power tool is less than or equal to 0.3 and greater than or equal to 0.15. ### Claim 23 A power tool, comprising: a main housing in which a drive mechanism is disposed; and a working head connected to an end of the main housing and rotatable relative to the main housing about a first axis; wherein the working head comprises an output shaft, the output shaft is driven by the drive mechanism to rotate about a second axis, and the power tool comprises a positioning assembly configured to position a rotational position of the working head. ### Claim 24 (depends on 23) The power tool according to claim 23, wherein the main housing comprises a grip and a connection portion, the working head is connected to the connection portion, the working head comprises a moving portion rotatable relative to the connection portion, and the positioning assembly is disposed between the moving portion and the connection portion. ### Claim 25 (depends on 23) The power tool according to claim 23, wherein the connection portion comprises several positioning slots, the positioning assembly comprises a positioning pin movable relative to the several positioning slots, and the working head is limited at a set position when the positioning pin is connected to one of the several positioning slots. ### Claim 26 A power tool, comprising: a main housing in which a drive mechanism is disposed; and a working head connected to an end of the main housing and rotatable relative to the main housing about a first axis; wherein the working head comprises an output shaft, the output shaft is driven by the drive mechanism to rotate about a second axis, and a connection assembly connects the output shaft with the drive mechanism. ### Claim 27 (depends on 26) The power tool according to claim 26, wherein the main housing is provided with a window portion. ### Claim 28 (depends on 27) The power tool according to claim 27, wherein the connection assembly is observable through the window portion. ### Claim 29 (depends on 28) The power tool according to claim 28, wherein the connection assembly comprises: a first connector, wherein an end of the first connector is connected to the drive mechanism, and the first connector is driven by the drive mechanism to rotate; a second connector, wherein an end of the second connector is connected to the output shaft; and a third connector connecting the first connector to the second connector and movable relative to the first connector and the second connector to transmit power outputted by the drive mechanism to the output shaft. ### Claim 30 (depends on 29) The power tool according to claim 29, wherein the third connector comprises: claw portions formed at two ends of the third connector; and intermediate members disposed at the two ends of the third connector and connected to the claw portions by rotating shafts. ### Claim 31 (depends on 30) The power tool according to claim 30, wherein a connection arm is disposed at an end of the first connector or an end of the second connector and connected to the intermediate member by a rotating shaft. ### Claim 32 (depends on 29) The power tool according to claim 29, wherein the third connector is detachably connected to the first connector and the second connector. ### Claim 33 A power tool, comprising: a main housing in which a drive mechanism is disposed, wherein the drive mechanism comprises a battery for storing energy; and a working head connected to an end of the main housing and rotatable relative to the main housing about a first axis; wherein the working head comprises an output shaft, the output shaft is driven by the drive mechanism to rotate about a second axis, and a ratio of a length of the battery to a maximum overall length of the power tool is less than or equal to 0.3 and greater than or equal to 0.15. ### Claim 34 A power tool, comprising: a main housing in which a drive mechanism is disposed, wherein the drive mechanism comprises a battery for storing energy; and a working head connected to an end of the main housing and rotatable relative to the main housing about a first axis; wherein the working head comprises an output shaft, the output shaft is driven by the drive mechanism to rotate about a second axis, the working head comprises a moving portion connected to the main housing, and the moving portion rotates relative to the main housing and is capable of being limited at several set positions. ### Claim 35 (depends on 34) The power tool according to claim 34, wherein the second axis forms an included angle with the main housing, and the several set positions correspond to included angles of different sizes.