Machine element or mechanism – Control lever and linkage systems – Hand operated
Patent
1989-05-25
1990-06-05
Luong, Vinh T.
Machine element or mechanism
Control lever and linkage systems
Hand operated
350633, 350634, F16C 110, B60R 106, G02B 718
Patent
active
049303708
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a mirror drive for use in an automotive remote-controlled rear-view mirror, and more particularly to an electrical connection structure enclosed in a power unit casing and which supplies power to two motors which drive the horizontal and vertical turns of the mirror.
DESCRIPTION OF THE PRIOR ART
In the automotive remote-controlled rear-view mirror assembly, a mirror is disposed changeably in direction in an opening in a mirror housing, and a mirror drive to drive the mirror is designed in the form of a power unit casing fixed inside the mirror housing. The power unit casing consists of two insulative parts, upper and lower, and has two motors disposed therein. Generally, the power unit casing is made waterproof by interposing an O-ring, or applying a sealant, between the junction surfaces of the upper and lower subcasings. The motors are so electrically connected at the terminals thereof to the battery and control switch that the mirror is turned horizontally and vertically by running the two motors in the casing forwardly or reversely as desired. Normally, the terminals of these motors have connected thereto sheathed wires which are led out of the mirror assembly through lead-out ports formed in the casing. In such conventional electrical connection structure, there is between each sheathed wires and wire lead-out ports gaps through which rain or the like possibly enters into the casing. To prevent such rain or the like from entering into the casing, a remote-controlled rear-view mirror assembly has been proposed which has a casing molded integrally with plural electrically conductive plates of which ends are so placed inside the casing as to be connected to the terminals of each motor while the other ends are so exposed outside the casing as to electrically be connected to the battery and control switch. A remote-controlled rear-view mirror assembly is disclosed in, for example, in the Japanese Unexamined Utility Model Publication No. 61-204845 (laid open on Dec. 12, 1986). For integral molding of the casing and plural conductive plates, the latter are inserted at one end thereof in vertical recess formed in the movable mold and the other end of the conductive plate is moved toward the vertical recess formed in the stationary mold opposite to the movable mold and thus the other end of each conductive plate is inserted into the vertical recess in the stationary mold, whereby the plural conductive plates are positioned. In such condition, a resin is injected into the clearance between the movable and stationary molds, whereby each conductive plate is molded integrally with the casing. For molding such conventional improved electrical connection structure, one end of each conductive plate is inserted in the vertical recess formed in the movable mold and the other end is moved toward the vertical recess formed in the stationary mold. So much care must be taken for controlling the positioning of the conductive plates, and the controlling is very difficult. Namely, if the other ends of the conductive plates are not inserted together into the vertical recess formed in the stationary mold, some of the conductive plates will be so bent that the other ends of the conductive plates which are to be exposed out of the casing to a predetermined length will not be correctly exposed so, with the result that the molding yield of the power unit casing will be low. In other such electrical connection structure, the edge of the vertical recesses in the movable and stationary molds are tapered for easy insertion of the ends of the conductive plates. When molding the power unit casing, a synthetic resin flows to the edges of the vertical recesses in the movable and stationary molds. As a result, a set synthetic resin will reside at the portions exposed out of the casing of the conductive plates molded integrally with the casing, and particularly the exposed portions of the conductive plates outside the casing provide for connections with an external connector and so
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Ichikoh Industries Ltd.
Luong Vinh T.
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