JPS6337322Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a mounting structure for a drive unit in an electric rearview mirror for an automobile.

In general, electric rearview mirrors are equipped with a mirror unit consisting of a mirror and a mirror base for supporting the mirror, and a drive unit for changing the angle of this mirror unit, which are installed inside the mirror body. It has a structure that allows you to adjust the angle.

In conventional electric rearview mirrors of this type, the drive unit was fixed inside the mirror body with screws, so it was troublesome to align the screw holes, etc. during assembly, and tools, jigs, etc. were required when tightening the screws. Furthermore, since it takes time to tighten using simple tools, an automatic tightening device must be installed to shorten the tightening time, which increases equipment costs and increases product costs. There was a problem.

This idea was made by focusing on the problems of the conventional drive unit. Wedge-shaped hooks with upward slopes are protruded from both sides of the rear left and right sides of the upper side wall of the outer casing of the drive unit. L with elasticity and a downward lip at the tip in the center of the side wall
The shaped locking piece is formed to project forward, and a pair of locking tongue pieces each having a downward slope corresponding to the wedge-shaped locking portion are provided on both left and right sides of the upper part of the mounting plate fixed within the mirror body. the wedge-shaped latching portion is sandwiched between the latching tongue piece and the mounting plate, and a latching hole corresponding to the L-shaped latching piece is provided at the lower part of the mounting plate. Mounting is carried out by standing up the plate-shaped piece, force-fitting the lip part of the L-shaped locking piece into the locking hole, and pressing the rear surface of the drive unit against the mounting plate using the elasticity of the locking piece. To propose a drive unit mounting structure that is extremely easy to assemble by making it possible to forcefully press and fix the back side of the drive unit to the mounting plate with one-touch manual operation without using any screws.

Hereinafter, this invention will be explained based on an embodiment shown in FIGS. 1 and 2 in which this invention is applied to a door mirror.

In the figure, reference numeral 1 is a mirror body, and 2 is a stay, through which the mirror body 1 can be attached to a door window (not shown) of an automobile.

A mounting plate 4 is fixed within the mirror body 1 with screws 5 in order to mount the drive unit 3 thereon.

At the upper part of the mounting plate 4, a pair of left and right locking tongues 4a, 4a are cut diagonally downward in order to hold the drive unit 3 in a fixed position as described later. Further, a plate-like piece 4b is formed at the lower part of the mounting plate 4 by being bent forward at a right angle, and a square-shaped locking hole 4c is formed in this plate-like piece 4b.

On the other hand, on the drive unit 3 side, there is an upper side wall 3a of the outer casing.
Wedge-shaped latching portions 3c, 3c corresponding to the latching tongues 4a, 4a are protrudingly provided on both left and right rear sides of the casing, and the lower side wall 3b of the outer casing has elasticity in the center and extends toward the front. An L-shaped locking piece 3d is provided. Furthermore, a downward lip is formed at the tip of the locking piece 3d. In addition,
The locking portion and the locking piece are made integrally with the outer casing using a resin member or the like.

Incidentally, a jig insertion hole 1a is bored in the lower peripheral wall portion of the mirror body 1 corresponding to the locking hole 4c of the mounting plate 4. In the drive unit 3, reference numeral 3e is a main pivot, 3f and 3f are drive pivots, and a mirror unit 6 is attached to these pivots 3e and 3f. 6a is a mirror, 6b is a mirror base, and the mirror 6a is attached and supported by this mirror base 6b.

Next, the manner of mounting the drive unit 3 into the mirror body 1 will be explained with reference also to FIGS. 3 and 4. To attach the drive unit to the mounting plate 4 fixed in the mirror body 1, first attach the wedge-shaped latches 3c, 3c to the latching tongues 4a, 4a and the mounting plate as shown in FIG. sandwiched between. Then, the drive unit 3 is rotated toward the mounting plate 4 using this clamping portion as a rotation center.

Next, as shown in FIGS. 3 and 4, while bending the L-shaped locking piece 3d at the bottom of the drive unit inward, insert the tip lip of the locking piece 3d into the locking hole 4c of the plate-like piece 4b.
The drive unit is forced into the mounting plate, and the elasticity of the locking piece 3d presses the drive unit against the mounting plate.

In this case, when the L-shaped locking piece 3d is bent inward (upward in FIG. 3) in order to fit into the locking hole 4c, the drive unit 3 Reaction force from the stopper piece 3d is received, and this reaction force acts as a force to push up the drive unit 3. As a result, this push-up force pushes the wedge-shaped latching portion 3c between the latching tongue piece 4a and the mounting plate 4. It acts as a strong force that traps it in between. Since the latching tongue piece 4a is formed in a downwardly sloping shape corresponding to the wedge-shaped latching part, the upward force of the wedge-shaped latching part applied to the latching tongue piece is reduced accordingly. Part of the force is a function of the wedge surface, which acts as a force that strongly presses the back of the drive unit against the mounting plate. Therefore, due to this pressing action, the drive unit 3 is brought into pressure contact with the mounting plate 4, and is firmly mounted.

After installing drive unit 3, pivot 3e, 3f
Attach mirror unit 6 to.

On the other hand, when it becomes necessary to remove the drive unit 3 from the mirror body 1, insert a suitable jig through the jig insertion hole 1a in FIG. 4 and push up the locking piece 3d. It can be easily removed from the locking hole 4c.

In addition, in the above-mentioned embodiment, the case where the present invention was applied to a door mirror was described, but this invention can also be applied to other electric mirrors such as a fender mirror.

As detailed above, according to this invention, a wedge-shaped latching portion is sandwiched between the latching tongue piece and the mounting plate, and a latching portion corresponding to the latching piece is provided at the bottom of the mounting plate. The plate-shaped piece in which the hole is bored is stood up, and the lip part of the L-shaped locking piece is forcefully fitted into the locking hole to achieve the action of the locking tongue and the wedge surface and the L-shaped locking. The elasticity of the piece allows the rear surface of the drive unit to be pressed and fixed toward the mounting plate.
Positioning and mounting of the drive unit to the mirror body can be done manually with a single touch, which not only improves installation workability, shortens installation time, and allows assembly at low cost, but also eliminates the strong vibrations found in automobiles. Even when attached to a receiving object, the drive unit does not wobble and has the excellent effect of being strongly held due to its elasticity.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the mounting structure of the drive unit in the electric rear view mirror according to this invention;
FIG. 2 is a sectional view taken along the line -- in FIG. 1, FIGS. 3 and 4 are explanatory views of the installation process, FIG. 3 is a view before installation, and FIG. 4 is a view after installation. 1...Mirror body, 3...Drive unit, 3
a, 3b... side wall of drive unit outer casing, 3c...
Latching part, 3d...Latching piece, 4...Mounting plate,
4a...Latching tongue piece, 4b...Plate piece, 4c...
Locking hole, 6...Mirror unit, 6a...Mirror, 6b...Mirror base.

Claims (1)

[Claims for Utility Model Registration] An electric rear mirror in which a mirror unit consisting of a mirror, a mirror base for supporting the mirror, and a drive unit for changing the angle of the mirror unit are mounted inside the mirror body via a mounting plate. Wedge-shaped hook portions having upward slopes are protrudingly provided on both rear left and right sides of the upper side wall of the outer casing of the drive unit, and a lip portion having elasticity and downward facing at the tip is provided at the center of the lower side wall of the outer casing. A pair of L-shaped locking pieces are formed so as to protrude forward, and each side of the upper left and right sides of the mounting plate fixed within the mirror body has a downward slope corresponding to the wedge-shaped locking portion. Cutting and bending a latching tongue piece, sandwiching the wedge-shaped latching portion between the latching tongue piece and a mounting plate, and further forming a position corresponding to the L-shaped latching piece on the lower part of the mounting plate. A plate-shaped piece provided with a locking hole is stood up, and the lip portion of the L-shaped locking piece is forcefully fitted into the locking hole, and the elasticity of the locking piece presses the back surface of the drive unit against the mounting plate. A mounting structure for a drive unit in an electric rearview mirror characterized by being fixed.