# US 12,759,513 B2 · Auxiliary positioning bracket and vehicle calibration system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,759,513 B2 - Document ID: US12759513B2 - Status: Granted - Kind: B2 - Application number: 18/713,509 - Filed: 2023-12-14 - Published: 2026-06-18 - Granted: 2026-10-13 - Earliest claimed: 2023-10-24 - Assignees: Shenzhen Smartsafe Tech Co., Ltd. - Applicants: Shenzhen Smartsafe Tech Co., Ltd. - Inventors: Wei Zhan; Xinwei Xu - Web page: https://patentgrep.com/patent/US12759513B2 ## CPC - B60S 5/00: Servicing, maintaining, repairing, or refitting of vehicles (vehicles adapted to carry a workshop for servicing or maintenance B60P3/14; servicing rail locomotives B61K) - F16M 13/02: for supporting on, or attaching to, an object, e.g. tree, gate, window-frame, cycle - G01B 11/275: for testing wheel alignment - B60S: SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR - F16M: FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS - G01B: MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS ## Abstract An auxiliary positioning bracket, including: a positioning bracket, and a laser device arranged on the positioning bracket. The positioning bracket has a first end portion and a second end portion arranged oppositely to the first end portion. The first end portion is formed with a first abutment surface, which is configured to abut against a tire outer lateral surface, and a second abutment surface, which is perpendicular to the first abutment surface and configured to abut against a horizontal plane of a calibration site. The positioning bracket is also formed with a measurement surface which is parallel to the second abutment surface. The laser device is arranged at the second end portion and configured to project a line laser onto the tire outer lateral surface, and a plane where the line laser is located is perpendicular to the measurement surface. ## Claims ### Claim 1 An auxiliary positioning bracket, comprising: a positioning bracket, and a laser device arranged on the positioning bracket; wherein the positioning bracket has a first end portion and a second end portion arranged oppositely to the first end portion; the first end portion is formed with a first abutment surface, which is configured to abut against a tire outer lateral surface, and a second abutment surface, which is perpendicular to the first abutment surface and configured to abut against a horizontal plane of a calibration site; the positioning bracket is also formed with a measurement surface which is parallel to the second abutment surface; and the laser device is arranged at the second end portion and configured to project a line laser onto the tire outer lateral surface, and a plane where the line laser is located is perpendicular to the measurement surface. ### Claim 2 (depends on 1) The auxiliary positioning bracket according to claim 1, wherein the second end portion is provided with a laser device fixing plate, and the laser device is in detachable connection with the laser device fixing plate. ### Claim 3 (depends on 2) The auxiliary positioning bracket according to claim 2, wherein the laser device fixing plate is a magnetic plate, and the laser device is configured to be magnetically suctioned onto the magnetic plate, to realize a detachable connection between the laser device and the magnetic plate. ### Claim 4 (depends on 3) The auxiliary positioning bracket according to claim 3, wherein at least two magnetic pieces are provided on the magnetic plate; a line connecting centers of the at least two magnetic pieces is parallel to the measurement surface and perpendicular to a length direction of the positioning bracket; and the laser device is provided with magnetic components that respectively correspond to the magnetic pieces. ### Claim 5 (depends on 2) The auxiliary positioning bracket according to claim 2, wherein the laser device fixing plate is provided with a hanging piece, and the laser device is provided with a fastener which is in detachable connection with the hanging piece. ### Claim 6 (depends on 2) The auxiliary positioning bracket according to claim 2, wherein the laser device fixing plate is further provided with a ruler positioning plate; the ruler positioning plate has a positioning groove configured for cooperating with the ruler; and the positioning groove is located on an extension line of the line laser. ### Claim 7 (depends on 2) The auxiliary positioning bracket according to claim 2, wherein the laser device fixing plate is provided with a handle. ### Claim 8 (depends on 2) The auxiliary positioning bracket according to claim 2, wherein the first end portion is formed with a first support foot, which protrudes downward from the first end portion; the laser device fixing plate is formed with a second support foot, which protrudes downward from the second end portion; a protruding length of the second support foot is equivalent to a protruding length of the first support foot, to enable the measurement surface to be parallel to the horizontal plane of the calibration site. ### Claim 9 (depends on 8) The auxiliary positioning bracket according to claim 8, wherein the first support foot is convex to form at least two first feet, which are spaced apart from each other, and the first feet protrude toward the horizontal plane of the calibration site; and the second support foot is convex to form at least two second feet, which are spaced apart from each other, and the second feet protrude toward the horizontal plane of the calibration site. ### Claim 10 (depends on 1) A vehicle calibration system, comprising: a calibration device and the auxiliary positioning bracket claim 1, wherein the auxiliary positioning bracket is configured to assist in positioning the calibration device. ### Claim 11 (depends on 10) The vehicle calibration system according to claim 10, wherein the second end portion is provided with a laser device fixing plate, and the laser device is in detachable connection with the laser device fixing plate. ### Claim 12 (depends on 11) The vehicle calibration system according to claim 11, wherein the laser device fixing plate is a magnetic plate, and the laser device is configured to be magnetically suctioned onto the magnetic plate, to realize a detachable connection between the laser device and the magnetic plate. ### Claim 13 (depends on 12) The vehicle calibration system according to claim 12, wherein at least two magnetic pieces are provided on the magnetic plate; a line connecting centers of the at least two magnetic pieces is parallel to the measurement surface and perpendicular to a length direction of the positioning bracket; and the laser device is provided with magnetic components that respectively correspond to the magnetic pieces. ### Claim 14 (depends on 11) The vehicle calibration system according to claim 11, wherein the laser device fixing plate is provided with a hanging piece, and the laser device is provided with a fastener which is in detachable connection with the hanging piece. ### Claim 15 (depends on 11) The vehicle calibration system according to claim 11, wherein the laser device fixing plate is further provided with a ruler positioning plate; the ruler positioning plate has a positioning groove configured for cooperating with the ruler; and the positioning groove is located on an extension line of the line laser. ### Claim 16 (depends on 11) The vehicle calibration system according to claim 11, wherein the laser device fixing plate is provided with a handle. ### Claim 17 (depends on 11) The vehicle calibration system according to claim 11, wherein the first end portion is formed with a first support foot, which protrudes downward from the first end portion; the laser device fixing plate is formed with a second support foot, which protrudes downward from the second end portion; a protruding length of the second support foot is equivalent to a protruding length of the first support foot, to enable the measurement surface to be parallel to the horizontal plane of the calibration site. ### Claim 18 (depends on 17) The vehicle calibration system according to claim 17, wherein the first support foot is convex to form at least two first feet, which are spaced apart from each other, and the first feet protrude toward the horizontal plane of the calibration site; and the second support foot is convex to form at least two second feet, which are spaced apart from each other, and the second feet protrude toward the horizontal plane of the calibration site.