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EP0321716A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Drive unit for electrically driven remote-controlled mirror

Assignee: Ichikoh Industries Ltd
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Filing: 1988-11-23
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Granted: —
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Expires: 2008-11-23
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Abstract

Abstract In a drive unit for an electric remote control mirror, a pair of screw rods (16) for slanting the mirror (10) around horizontal and vertical axes is disposed movably forwardly and backwardly within the drive casing (14). Within the drive casing (14), there is disposed a pair of drive motors (20), of which the rotations are transmitted through a reduction gear group (52) to a pair of rota­tion members (30), of which the rotations are converted into forward and backward movements of the pair of screw rods (16). Each of the rotation members (30) is composed of a shaft (36) having a pair of arm members (34) with a screw thread which is in mesh with a screw thread (24) formed on the inner circumference of the screw rod (16), a hollow cylindrical rotation body (38) having a gear (46) in mesh with the reduction gear group (52) and a space (18) in which the screw rod (16) is placed, and a plurality of connection members (40) extending radially and which provide a connection between the base of the shaft (36) and the lower end of the rotation body (38), each of the connection members (40) being formed relatively thin so that when the shaft (36) is applied with a force from the screw rod (16), the connection member (40) is resiliently deformable. When each screw rod (16) is moved forwardly or backwardly, the shaft (36) is applied with a force from the screw rod (16), but since the plural connec­tion members (40) are resiliently deformed, the shaft (36) can be slanted axially so that each screw rod (16) can positively follow up with the pivoting of the mirror.

Inventors

  • 👤 Norio Yoshida

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-29 03:40
CPC Classifications
B; B60; B60R; B60R1/00; B60R1/02; B60R1/06; B60R1/062; B60R1/07; B60R1/072; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18576; Y10T74/20; Y10T74/20396; Y10T74/20402; Y10T74/2042; Y10T74/20432

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 283 words
A drive unit for an electric remote control mirror, comprising: supporting means for holding within a mirror housing a mirror body having a mirror fixed thereon, said supporting means including a housing member fixed inside said mirror housing and means for pivotably supporting said mirror body; two ball bases mounted on the back side of said mirror body, one of which lies on a lateral pivot axis while the other lies on a longitudinal pivot axis, said lateral and longitudinal axes being perpendicular to each other; a pair of hollow cylindrical screw rods, each being internally threaded on the inner wall thereof, provided at the end portion thereof with a ball portion which fits in a corresponding one of said ball bases, and axially movable through a cylindrical hole formed in said housing member while being unrotatable with respect to said housing member; a pair of rotation members rotatably mounted within said housing member, each composed of a shaft provided with at least two arm members having plural screw threads coupled to the screw threads of each of said screw rods and which are spaced apart from each other, a hollow cylindrical rotation body holding therein said screw rod and shaft and having a gear integrally formed therewith on the outer circumference thereof, and a plurality of radially extending connection members to provide a connection between said shaft and rota­tion body and which is formed relatively thin so as to resiliently be deformable; reduction gear means connected with the gear formed on the rotation body of said rotation member to transmit a driving force to each of said rotation member; and an electric motor for driving said rotation member through said gear means.
Claim 2
Dependent Claim 283 words
A drive unit for an electric remote control mirror, comprising: supporting means for holding within a mirror housing a mirror body having a mirror fixed thereon, said supporting means including a housing member fixed inside said mirror housing and means for pivotably supporting said mirror body; two ball bases mounted on the back side of said mirror body, one of which lies on a lateral pivot axis while the other lies on a longitudinal pivot axis, said lateral and longitudinal axes being perpendicular to each other; a pair of hollow cylindrical screw rods, each being internally threaded on the inner wall thereof, provided at the end portion thereof with a ball portion which fits in a corresponding one of said ball bases, and axially movable through a cylindrical hole formed in said housing member while being unrotatable with respect to said housing member; a pair of rotation members rotatably mounted within said housing member, each composed of a shaft provided with at least two arm members having plural screw threads coupled to the screw threads of each of said screw rods and which are spaced apart from each other, a hollow cylindrical rotation body holding therein said screw rod and shaft and having a gear integrally formed therewith on the outer circumference thereof, and a plurality of radially extending connection members to provide a connection between said shaft and rota­tion body and which is formed relatively thin so as to resiliently be deformable; reduction gear means connected with the gear formed on the rotation body of said rotation member to transmit a driving force to each of said rotation member; and an electric motor for driving said rotation member through said gear means.
Claim 3
Dependent Claim 71 words
The drive unit for an electric remote control mirror ac­cording to Claim 1, wherein said rotation member is so ar­ranged as to rotate with the whole circuference of the lower end of said cylindrical rotation body being in contact with a receiving recess formed on the bottom of said housing member and each of said connection members is formed in a position away from the bottom wall of said housing member.
Claim 4
Dependent Claim 31 words
The drive unit for an electric remote control mirror ac­cording to Claim 2, wherein said plural connection members are disposed in positions offset with respect to said pair of arm members.
Claim 5
Dependent Claim 27 words
The drive unit for an electric remote control mirror ac­cording to Claim 3, wherein each of said connection members has at least a flute formed circumferentially thereon.
Claim 6
Dependent Claim 82 words
The drive unit for an electric remote control mirror ac­cording to Claim 1, wherein said cylindrical rotation body of said rotation member is provided at diametrical positions on the circumference of the lower end thereof, which correspond to said pair of arm members, with a pair of protrusions extending parallelly with said axial direction and which are in contact with the bottom of said receiving recess, so that said rotation body can swing around a straight line connecting said pair of protrusions.
Claim 7
Dependent Claim 30 words
The drive unit for an electric remote control mirror ac­cording to Claim 5, wherein said plurality of connection members are disposed in positions offset from said pair of arm members.
Claim 8
Dependent Claim 49 words
The drive unit for an electric remote control mirror ac­cording to Claim 5, wherein there is provided on the bottom wall of said housing member in a position opposing the base portion of said shaft of said rotation member a stopper which limits the axial movement of said shaft.
Claim 9
Dependent Claim 42 words
The drive unit for an electric remote control mirror ac­cording to Claim 6, wherein said protrusions are formed to have a substantially same curvature as that of the outer cir­cumference of said cylindrical rotation body and are rounded at the ends thereof.
Claim 10
Dependent Claim 27 words
The drive unit for an electric remote control mirror ac­cording to Claim 6, wherein each of said connection members has at least a flute formed circumferentially thereon.

References Cited (Backward Citations)

DE2502188A1 Cited
US4696555A Cited
EP0265973A1 Cited

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