JPS6332750Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a remote control mirror for automobiles equipped with a mirror position detection device.

FIG. 1 shows the driving part of a remote control mirror for a motor vehicle equipped with a mirror position detection device.

For convenience of explanation, two orthogonal axes X-X' and Y-
Y′ is determined as shown.

A mirror (not shown) is supported so as to be tiltable around the intersection O of the two axes. This mirror
A drive/transmission mechanism A for tilting around the -X' axis and a drive/transmission mechanism B for tilting around the YY' axis are provided.

The above drive/transmission mechanism A rotates a receiving gear 4 by a motor 1 via a worm gear 2 and a worm wheel 3, and has a male thread screwed into a female thread 4a formed along the central axis of the receiving gear 4. The reciprocating rod 5, which is formed with a reciprocating rod 5, is screw-fed in a direction perpendicular to the plane of the paper. The advance/retreat rod 5 above is Y-
It is disposed on the Y' axis, and one end thereof is connected to the mirror via a pivot joint (both not shown). As a result, when the mirror 1 is arbitrarily rotated forward or reverse, the advancing/retracting rod 5 moves back and forth perpendicularly to the plane of the paper according to the number of rotations, thereby tilting the mirror around the X-X' axis.

The drive/transmission mechanism B is composed of the same components as the drive/transmission mechanism A, and its reciprocating rod 5 is disposed on the X-X' axis, and tilts the mirror around the Y-Y' axis.

In order to detect the amount of tilting of the mirror mentioned above and store it in a control device (not shown), a ring-shaped magnet 6 is attached to the rotating shaft of the motor 1, and a ring-shaped magnet 6 is mounted on the rotation shaft of the motor 1. A magnetic sensing element is arranged to detect the rotational speed of the motor 1 as an electrical pulse (see Utility Model Application No. 115438/1983).

In the automobile remote control mirror equipped with the conventional mirror position detection device as described above, the magnet 6 is hard and brittle and is therefore not suitable for being press-fitted directly onto the rotating shaft of the motor.
Conventionally, the bushing 8 is generally inserted and fitted.
6a is a fitting hole formed in the magnet 6. As mentioned above, the dedicated bush 8 to be interposed between the magnet 6 and the motor shaft must be prepared as a separate part, so the number of components is large. Furthermore, since the worm gear 2 and the magnet 6 are attached to both sides of the motor 1, it is difficult to make the entire device compact.

The present invention has been made in view of the above-mentioned circumstances, and it is an object of the present invention to provide a remote control mirror for an automobile with a mirror position detection device that has a small number of component parts and can be easily assembled into a compact device as a whole.

In order to achieve the above object, the present invention is characterized in that a magnet is fitted to the base of a worm gear attached to the rotating shaft of the motor, and the worm gear also functions as a bush for fitting the magnet.

Next, an embodiment of the present invention will be described with reference to FIGS. 2 to 4.

FIG. 2 is a longitudinal sectional view of the vicinity of the connecting portion between the motor 1 and the magnet 6, and FIG. 3 is a perspective view thereof.

Reference numeral 9 denotes a bushing and worm gear configured by applying the present invention, which has a shaft hole 9a that closely fits the rotating shaft of the motor 1, and a shaft hole 9a that closely fits the rotating shaft of the motor 1, and a fitting hole 6a of the magnet 6 near one end in the longitudinal direction. A cylindrical surface portion 9b to be fitted is formed, and worm teeth 9c are formed on the outer peripheral surface excluding the cylindrical surface portion 9b.

The bush/worm gear 9 configured as described above has a shape similar to the bush 8 in the conventional device on the left side of the imaginary line C-C shown in FIG. 2, and a shape similar to the worm gear 2 in the conventional device on the right side. There is.

The above cylindrical surface portion 9b is inserted into the fitting hole 6 of the magnet 6.
a, and the rotating shaft of the motor 1 is fitted into the shaft hole 9a of the bush/worm gear 9. FIG. 4 shows the drive portion of a remote control mirror for an automobile, which is assembled with the mirror drive/transmission mechanism configured as described above.

In this embodiment, the magnet 6 is fitted to the base of the bush/worm gear 9 having the worm teeth 9c formed therein as described above.

In the automobile remote control mirror configured as described above, when the motor 1 rotates, the bush/worm gear 9 rotates, and its worm teeth 9c drive the worm wheel 3, and the magnet 6 fitted in the bush/worm gear 9 rotates. rotates, actuating the reed switch 7, and detecting the rotational speed of the motor 1.

As is clear from the configuration described above, the automotive remote control mirror of this embodiment does not require a separate dedicated bush for fitting the magnet 6 as an independent member, so the number of component parts is small. Easy parts production arrangement, parts management, and process management in mass production, reducing assembly man-hours. Besides, worm tooth 9c and magnet 6
and are gathered on one side of motor 1, so it does not take up much space.

As detailed above, according to the present invention, the number of component parts of a remote control mirror for an automobile equipped with a mirror position detection device can be reduced.
Moreover, the entire device can be made compact.

[Brief explanation of the drawing]

FIG. 1 is an external view of a driving portion of a conventional remote control mirror for an automobile equipped with a mirror position detection device. 2 to 4 show an embodiment of a remote control mirror for an automobile equipped with a mirror position detection device according to the present invention. 4 are external views of the mirror driving portion. 1...Motor, 2...Worm gear, 3...
Worm foil, 4...Receiving gear, 4a...Female screw, 5...Advancing/retracting rod, 6...Magnet, 6a...
Fitting hole, 7... Reed switch, 8... Button, 9... Button and worm gear, 9a... Coaxial hole, 9b... Same cylindrical surface portion, 9c... Same worm tooth.

Claims (1)

[Scope of utility model registration request] Mirror position detection with a structure in which a magnet is fitted via a bush to the rotating shaft of a motor that drives the mirror via a worm gear, and a magnetic sensing element is provided opposite the magnet to detect the rotational speed of the motor. 1. A remote control mirror for an automobile equipped with a device, characterized in that the magnet is fitted to the base of the worm gear, and the worm gear also functions as the bush.