# US 10,766,419 B2 · Fastening construction, in particular for an exterior vision unit of a motor vehicle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,766,419 B2 - Document ID: US10766419B2 - Status: Granted - Kind: B2 - Application number: 15/780,516 - Filed: 2016-12-01 - Published: 2018-12-06 - Granted: 2020-09-08 - Earliest claimed: 2015-12-02 - Assignees: MCi (Mirror Controls International) Netherlands B.V. - Applicants: MCI (Mirror Controls International) NETHERLANDS B.V. - Inventors: François Bouaziz; Peter Alexander Hamming - Web page: https://patentgrep.com/patent/US10766419B2 ## CPC - B60R 1/076: yieldable to excessive external force and provided with an indexed use position ({B60R1/0617, B60R1/074} take precedence) - G02B 7/182: for mirrors - B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract Fastening construction (1), in particular for an exterior vision unit of a motor vehicle, comprising a base part (3) which can be fixedly connected with a vehicle, and a rotation part (4) which is couplable with the base part (3) and which in coupled condition forms a central shaft (5) for pivotally bearing-mounting a housing of an exterior vision unit. ## Claims ### Claim 1 A fastening construction comprising: a base part configured to be connected with a vehicle; and a rotation part, couplable with the base part and which in a coupled condition forms a central shaft, wherein the base part and the rotation part are provided with at least one cam and groove pair cooperating as a bayonet catch, such that in a first angular position of the rotation part with respect to the base part, the rotation part for the purpose of coupling can be displaced along a geometric axis to the base part to align the cam and groove pair for cooperation, the rotation part is pivotable about the geometric axis from the first angular position to a second angular position in which through cooperation of the cam and groove pair, the rotation part is locked with respect to the base part axially along the geometric axis, characterized in that the cam and groove pair is provided with surfaces cooperating under wedging action, and the rotation part further cooperates with a tightening part in a manner rotation-coupled via a breakable coupling, so that the tightening part, with the breakable coupling breaking, can rotate relative to the base part and a remaining portion of the rotation part from the second angular position about the geometric axis to a third angular position. ### Claim 2 (depends on 1) The fastening construction according to claim 1, wherein the rotation part further cooperates with the tightening part via a fixation coupling, wherein the fixation coupling couples the tightening part in the third angular position nonrotatably with the rotation part. ### Claim 3 (depends on 2) The fastening construction according to claim 2, wherein the fixation coupling comprises a toothing extending at least one of radially or axially between the tightening part and the rotation part. ### Claim 4 (depends on 1) The fastening construction according to claim 1, wherein the rotation part and the base part are provided with cooperating blocking parts configured to block the rotation part in the third angular position against rotation about the geometric axis relative to the base part. ### Claim 5 (depends on 4) The fastening construction according to claim 4, wherein the cooperating blocking parts comprise a recess in the base part, in which a coupling cam in the third angular position is received in a rotation-locking manner. ### Claim 6 (depends on 1) The fastening construction according to claim 1, wherein the surfaces of the cam and groove pair comprise mutually facing, lying wedge surfaces configured to cooperate under wedging action. ### Claim 7 (depends on 1) The fastening construction according to claim 1, wherein the tightening part comprises a flange implemented as a separate component located around a main shaft part of the rotation part, wherein the main shaft part extends along the geometric axis. ### Claim 8 (depends on 1) The fastening construction according to claim 1, wherein the tightening part is movable relative to the rotation part axially along the geometric axis. ### Claim 9 (depends on 1) The fastening construction according to claim 1, wherein the rotation part further comprises a bearing part extending substantially radially with respect to the geometric axis, the bearing part configured to bear in a chamber of the base part, wherein the bearing part together with the chamber include the bayonet catch. ### Claim 10 (depends on 1) The fastening construction according to claim 1, wherein the tightening part during use is biased under spring action. ### Claim 11 (depends on 10) The fastening construction according to claim 10, wherein to generate the spring action, a spring is provided. ### Claim 12 (depends on 11) The fastening construction according to claim 11, wherein the spring is a helical spring arranged around the central shaft. ### Claim 13 (depends on 10) The fastening construction according to claim 10, wherein the spring action is towards a bearing part extending substantially radially with respect to the geometric axis, the bearing part including a cam or a groove of the cam and groove pair of the bayonet catch. ### Claim 14 (depends on 1) The fastening construction according to claim 1, wherein the breakable coupling comprises a coupling cam provided on the tightening part. ### Claim 15 (depends on 14) The fastening construction according to claim 14, wherein the coupling cam during use cooperates under spring action with a run-on surface provided on the base part. ### Claim 16 (depends on 1) The fastening construction according to claim 1, provided with a housing bearing-mounted around the rotation part. ### Claim 17 (depends on 1) An exterior vision unit for a motor vehicle, comprising the fastening construction according to claim 1. ### Claim 18 A method for fastening a fastening construction to a motor vehicle comprising: displacing a rotation part along a geometric axis to a base part to align at least one cam and groove pair of a bayonet catch for cooperation, and pivoting of the rotation part about the geometric axis from a first angular position to a second angular position through exertion of a tightening moment on an engaging part in which by a wedging action of the at least one cam and groove pair, the rotation part is locked with respect to the base part axially such that the rotation part relative to the base part is free from play along the geometric axis; and rotating of a tightening part from the second angular position relative to the base part and a remaining portion of the rotation part to a third angular position, as a result of the wedging action between the cam and groove pair, and breaking of a breakable coupling between the tightening part and the remaining portion of the rotating part, wherein the rotation part is connected to the base part via the bayonet catch, the base part being fastened to the motor vehicle. ### Claim 19 (depends on 18) The method according to claim 18, wherein the tightening part in the third angular position is nonrotatably coupled with the rotation part via a fixation coupling. ### Claim 20 (depends on 19) The method according to claim 19, further comprising blocking of the rotation part in the third angular position via cooperating blocking parts against rotation about the geometric axis relative to the base part. ### Claim 21 (depends on 18) The method according to claim 18, wherein the fastening construction is part of an exterior vision unit for a motor vehicle.