JP2526769Y2 - Electric remote control door mirror drive unit - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drive unit used for an electric remote control type door mirror, and more particularly to a waterproof structure thereof.

[0002]

2. Description of the Related Art A drive unit for tilting a mirror body in an electric remote control type door mirror is composed of a main body case accommodating a drive motor and a movable pivot, and a lid case covering the main body case. Since it is mounted outside, it is necessary to seal between the main body case and the lid case so as not to be immersed in the drive unit. Conventionally, as this waterproof structure, as disclosed in, for example, Japanese Utility Model Application Laid-Open No. 59-12743, an annular concave groove is formed in a main body case, and a lid is attached to the main body case via an O-ring attached to the concave groove. It is common to fix the case.

[0003]

However, in the conventional structure using an O-ring, the mounting operation of the O-ring itself is complicated, and if the mounting of the O-ring is incomplete, the main body case and the lid are not provided. There is a problem that the O-ring is caught between the case and the case, and does not serve the function of waterproofing. Also, in order to obtain an appropriate O-ring interference,
The problem is that considerable dimensional accuracy is required. The present invention has been made in view of the above problems in the prior art,
An object of the present invention is to eliminate the O-ring and measure waterproofing by a potting agent, and to facilitate the assembling work of the drive unit.

[0004]

According to the present invention, there is provided a drive unit for an electric remote control type door mirror which comprises a main body case and a lid case and accommodates a driving member for tilting the mirror therein. Lid on the part
An outer peripheral wall contacting the case and formed higher than the outer peripheral wall;
The lid case has a concave peripheral groove formed of an inner peripheral wall, and the lid case has a gap with the outer peripheral wall and the inner peripheral wall, and the protruding peripheral wall that fits loosely into the concave peripheral groove and the inner peripheral wall are fitted. A stepped portion, the concave circumferential groove is filled with a potting agent , the potting agent is interposed in the gap, and the lid case is joined to the main body case in a state where the projecting peripheral wall is immersed. It is like that.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. 1 is a plan view in which a part of the drive unit case is cut away, FIG. 2 is a cross-sectional view taken along line AA of FIG. 1, FIG. FIG. 5 is an exploded perspective view showing the state, FIG. 5 is a longitudinal sectional view of an electric remote control type door mirror, and FIG. 6 is a transverse sectional view thereof.

[0006] As shown in FIGS. 4 to 6, the mirror 1 is held by a mirror holder 2, and the mirror holder 2 comprises a bracket 5 fixed to a mirror visor 3.
Are supported by a ball pivot 4 protruding from the front surface of the lens so as to be tiltable around a horizontal axis X and a vertical axis Y.

As shown in FIGS. 1, 2, 4, 5, and 6, a drive unit case 16 for housing a drive mechanism for tilting the mirror holder 2 about a horizontal axis X and a vertical axis Y is provided. , A main body case 6 and a lid case 7 functioning as a lid. Inside the drive unit case 16, both ends are pivotally supported by a pair of drive motors 8 a and 8 b and the main body case 6 and the lid case 7.
a, 8b, and shaft holes 10a, 1 formed in the rotating shaft portions of the driving gears 9a, 9b.
Movable pivots 15a and 15b which are non-rotatably and slidably fitted to 0b (10b is not shown) are provided. In addition, the cover case 7 has a through hole 12 for allowing the movable pivots 15a and 15b to protrude outward.
a and 12b are respectively formed. The penetration hole 12
a and 12b are provided with a clutch spring holding portion 13
a, 13b are protruded, and the movable pivots 15a, 1
A substantially U-shaped clutch spring 11a, 11b that engages with the thread grooves 14a, 14b threaded in 5b is fitted from the lateral direction.

As shown in FIGS. 2 and 3, a concave peripheral groove 17 formed by an outer peripheral wall 17a and an inner peripheral wall 17b is provided on the outer peripheral portion of the main body case 6. On the other hand, wherein the outer peripheral portion of the lid case 7, wherein the projecting wall 18 so as to fit in a state in which with play in a concave peripheral groove 17 is Ru provided co
Is provided with a step 18a into which the inner peripheral wall 17b is fitted . Then, a liquid resin 19 that cures with time is filled into the concave peripheral groove 17 of the main body case 6, and then the protruding peripheral wall 18 of the lid case 7 is fitted into the concave peripheral groove 17. As the process proceeds, the resin 19 hardens, and the joint between the main case 6 and the lid case 7 is completely sealed. Thus, the liquid resin 19 is filled in the concave peripheral groove 17 of the main body case 6 and the lid case 7 is moved to the main body case 6.
Can be completely sealed by simply covering the joint between the main body case 6 and the lid case 7.
There is no need for the complicated work of mounting the ring, and as a result,
Assembly of the drive unit case 16 becomes very easy. Here, the concave upon circumferential thereby fitting the protruding peripheral wall 18 into the groove 17, the liquid resin 19 will not spill in the drive unit case 16, in the drive unit case 16 resin 19 is cured driven gear The functions such as 9a and 9b are not impaired.

As shown in FIGS. 2, 4, and 5, a pair of square windows 19a and 19b are formed in the bracket 5, and the drive unit case 16 is fixed to the back of the bracket 5 by screws. At this time, the movable pivot 15a,
15b is inserted through the square windows 19a and 19b. Further, in order to prevent water from entering through gaps between the insertion holes 12a, 12b and the movable pivots 15a, 15b,
Hat-shaped boots 20a, 20b are attached so as to cover the entire circumference of the clutch spring holding portions 13a, 13b, and the distal ends of the boots 20a, 20b have boot locking grooves at the distal ends of the movable pivots 15a, 15b (see FIG. (Not shown). On the other hand, the boots 20a, 2
When the drive unit case 15 is screwed and fixed to the rear surface of the bracket 5, the lower peripheral edge of the boot unit 20b is sandwiched between the upper surface of the lid case 7 and the rear surface of the bracket 5. It is firmly attached around the clutch spring holding portions 13a and 13b.

As shown in FIGS. 5 and 6, the movable pivots 15a and 15b are respectively supported on a horizontal axis X and a vertical axis Y passing through the spherical pivot 4 supported by the mirror holder 2. The movable pivots 15a, 15b
, The mirror 1 held by the mirror holder 2 can be tilted back and forth and left and right.

[0011]

[Effects of the Invention] The present invention has the following excellent effects by being configured as described above. (1). Simply filling the concave peripheral groove of the main body case with the potting agent and putting the lid case over the main body case can completely seal the joint between the main body case and the lid case. No complicated work is required, and as a result, assembling of the drive unit becomes very easy. (2). By forming the concave peripheral groove so that the inner wall is higher than the outer wall, when the projecting peripheral wall is fitted into the concave peripheral groove, the potting agent does not overflow into the main body case, so the drive gear in the drive unit And other functions are not impaired. (3). Since the potting agent is interposed between the side surfaces of the ridge and the inner and outer walls, a double sealing structure partitioned by the ridges appears, and a wide adhesive surface is obtained.
The adhesive force can be increased, and sealing can be performed more reliably. (4). Since the upper ends of both the inner and outer peripheral walls of the concave peripheral groove are in contact with the lid case, a stable joining state can be obtained. (5). Since the lid case is provided with a step portion into which the inner peripheral wall of the concave peripheral groove is fitted, lateral positioning can be performed simultaneously with closing the lid.

[Brief description of the drawings]

FIG. 1 is a plan view in which a part of a drive unit case is cut away.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is an explanatory view for assembling a main body case and a lid case.

FIG. 4 is an exploded perspective view showing an assembled state of a drive unit case.

FIG. 5 is a longitudinal sectional view of an electric remote control type door mirror.

FIG. 6 is a cross-sectional view of the electric remote control type door mirror.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Mirror 6 Body case 7 Lid case 8a Drive motor 8b Drive motor 9a Drive gear 9b Drive gear 11a Clutch spring 11b Clutch spring 15a Movable pivot 15b Movable pivot 16 Drive unit case 17 Concave peripheral groove 17a Outer peripheral wall 17b Inner peripheral wall 18 Protrusion 18a Step 19 resin

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-50-15948 (JP, A) JP-A-62-77597 (JP, A) Fully open 1984-59-12743 (JP, U) Really open Showa 57- 92042 (JP, U)

Claims (1)

(57) [Scope of request for utility model registration] 1. A drive unit for an electric remote-control type door mirror comprising a main body case and a lid case and containing a driving member for tilting the mirror therein, wherein the main body case has an outer peripheral wall contacting the lid case at an outer peripheral portion thereof. From the outer wall
While having a concave peripheral groove formed of an inner peripheral wall which is also formed high, the lid case to said outer peripheral wall and inner peripheral wall, an air gap
The inner peripheral wall and the protruding peripheral wall having a loose fit in the concave peripheral groove
It has a stepped portion for fitting , and fills the concave circumferential groove with a potting agent and interposes the potting agent in the gap.
And a lid case joined to the main body case in a state where the protruding peripheral wall is immersed therein.