JPH1120549A - Electric storage unit and harness for electric storage door mirror - Google Patents

Abstract

PROBLEM TO BE SOLVED: To miniaturize an electric storage unit by holding a harness in the electric storage unit. SOLUTION: An electric storage unit 2 and a harness 4 are formed as separate assemblies, an insertion hole 210 and a hollow cylinder 230 are provided in a shaft holder 20, a shaft 21 and a cover 23, an outer tube 50 is externally fitted to the harness 4 and connectors 45, 46 are provided for the harness 4. As a result, the harness 4 is inserted through the insertion hole 210 and the cylinder 230, the outer tube 50 is externally fitted and fixed at one end to the cylinder 230 with water tightness and turned down at the other end and connectors 45, 46 at both ends of the harness 4 can be electrically connected to a connector and a drive motor on a control switch device side and a power supply side and a connector on a switch mechanism side, respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric retractable door mirror mounted on a vehicle body such as a door of an automobile, which comprises separate assemblies which are separately assembled, and which is mounted on the door mirror. More particularly, the present invention relates to an electronic unit and a harness in an electric retractable door mirror in which the electronic unit is downsized.

[0002]

2. Description of the Related Art An electric retractable door mirror will be described below with reference to FIG. In the figure, reference numeral 1 denotes a mirror base fixed to a door (not shown) of an automobile.
An electronic unit 2 is fixed to the mirror base 1.

The electronic unit 2 includes a shaft holder 20 fixed to the mirror base 1 and a shaft 21 provided (fixed) integrally with the shaft holder 20.
A gear case 22 mounted on the fixed side of the shaft 21 and the shaft holder 20 so as to be rotatable around the axis of the shaft 21 and having an open upper part;
Cover 23 watertightly attached to the edge of the upper opening 2
And a drive motor M, a speed reduction mechanism 24, a clutch mechanism 25, and a switch mechanism (not shown) housed in the cover 23 and the gear case 22. The speed reduction mechanism 24 and the clutch mechanism 25 described above are interposed between the drive motor M and the shaft 21. A mirror assembly 3 is attached to a rotating side of the electronic unit 2 such as the gear case 22.

The mirror assembly 3 includes a mirror body 30 having a mirror surface (mirror surface) on a front surface, and a heater (for example, PT) provided on the back surface of the mirror body 30.
It comprises a C-plane heating element 31, a mirror holder 32, a mirror housing 33 having an opening on the front surface, and a power unit 34 mounted in the mirror housing 33. The above-mentioned mirror body 30 and the like (including the heater 31 and the mirror holder 32) are attached to the above-mentioned power unit 34 so as to be tiltable up, down, left and right, and are arranged at the front opening of the above-mentioned mirror housing 33.

The drive motor M, the switch mechanism, the power unit 34 and the heater 31 and the control switch device (not shown) and the power supply (not shown) installed in the driver's seat are connected by a harness (not shown). It is electrically connected.

Next, the operation of the electric retractable door mirror will be described. First, when the control switch device is operated, the drive motor M is driven to drive the speed reduction mechanism 2.
4 and the clutch mechanism 25, the mirror assembly 3 is moved from the standing position (use position) to the storage position (backward tilting position), and conversely from the storage position (backward tilting position) to the standing position (use position) on the mirror base 1. It turns around. When the mirror assembly 3 reaches a predetermined position (standing position or storage position), the power supply to the drive motor M is cut off by the action of the switch mechanism, and the mirror assembly 3 is positioned at the standing position or storage position. Become.

Further, when the mirror assembly 32 is manually rotated, the mirror assembly 3 can be positioned at the standing position, the storage position, and the forward tilt position by the action of the clutch mechanism 25. Further, when an external force is applied to the mirror assembly 3 located at the upright position, the mirror assembly 3 is rotated by the action of the clutch mechanism 25 to the retracted position and the forward tilting position for buffering. As the above-mentioned electric retractable door mirror, for example, Japanese Patent Application No. 6-1 filed earlier by the present applicant.
No. 70874 (JP-A-8-34288).

[0008]

In the above-mentioned electric retractable door mirror, although the above-mentioned electronic unit 2 needs to be a common type even if the vehicle type is different, the above-mentioned harness has a different vehicle type. (For example, the length and number of wire harnesses are different from each other), and it is necessary to prepare a plurality of types for each vehicle type. However, the conventional electronic unit and harness in the above-mentioned electric retractable door mirror have the electric motor of the drive motor M, the switch mechanism and the harness in order to waterproof the electric equipment of the drive motor M and the switch mechanism and the harness. Unit 2
And is electrically connected in the gear case 22 and the cover 23, and is composed of one assembled body in which the electronic unit 2 and the heart are integrally assembled. As a result, the conventional electronic unit and harness in the above-mentioned electric retractable door mirror differ from vehicle type to vehicle type, although it is only necessary to arrange one type of electronic unit 2 as one type of component. It is necessary to arrange the electronic unit 2 with the harness integrated together as a plurality of types of parts for each vehicle type.
However, there is a problem that the number of parts increases for each type of vehicle, and the parts management is correspondingly complicated.

In the above-described electric retractable door mirror, the assembling step of the electronic unit 2 includes automatically assembling the speed reduction mechanism 24, the clutch mechanism 25, the switch mechanism, and the drive motor M by a machine. It is necessary to manually electrically connect the M and the electrical equipment of the switch mechanism and the harness. However, the conventional electronic unit and harness in the above-mentioned electric retractable door mirror are composed of one assembled body in which the electronic unit 2 and the harness are integrally assembled. Although the assembling of the speed reduction mechanism 24, the clutch mechanism 25, the switch mechanism, and the drive motor M can be automated, manual electrical connection of the drive motor M, the switch mechanism, and the electric equipment of the harness is required. There is a problem that the assembly process of the unit 2 is complicated.

The applicant of the present invention has previously filed an application for a power unit and a harness (Japanese Patent Application No. 7-325845) in an electric retractable door mirror which has solved the above-mentioned problems.
As shown in FIGS. 13 and 14 (the same reference numerals in FIG. 12 denote the same parts as those in FIG. 12), the electric unit 2 and the harness 4 are connected to each other in the electric retractable door mirror. Are composed of separate assembled bodies which are separately assembled, and are obtained by externally attaching the separate rating unit 2 and the harness 4.

That is, a harness holder portion 220 is integrally provided on one end side of the gear case 22 so as to protrude outward.
A long hole 221 is provided in the harness holder 220, and the harness 4 is inserted and held in the long hole 221. This harness 4 includes a switch mechanism (not shown)
And a first wire harness 41 connected to a drive motor (not shown), a second wire harness 42 connected to a power unit (not shown), and a third wire harness 43 connected to a heater (not shown). Become. One end of each of the wire harnesses 41, 42, 43 has a connector 45 connected to a switch mechanism and a connector 44 on the drive motor side.
, A connector (not shown) connected to a power knit connector (not shown), and a heater connector (not shown)
And a connector (not shown) for connection with the power supply, and a control switch device (not shown) installed in the driver's seat and a power supply (not shown) are provided at the other ends of the wire harnesses 41, 42, and 43, respectively. A connector (not shown) for connecting to the connector on the (battery) side is provided. When mounting the electronic unit 2 and the harness 4 on the door mirror, the harness 4 is externally attached to the electronic unit 2 and the connector 44 at one end of the harness 4 is connected to a switch mechanism, a drive motor, a power unit, and a heater. The connector on the other end of the harness 4 is connected to the control switch device and the connector on the power supply side.

As described above, the electronic unit and the harness in the above-mentioned electric retractable door mirror are the first wire harness 41 of the harness 4 externally attached to the electronic unit 2.
By connecting the connector 44 to the switch mechanism and the connector 45 on the drive motor side, the drive motor, the switch mechanism, and the electric equipment of the harness 4 are electrically connected. Equipment waterproofing measures are in place. As a result, the electric unit and the harness in the above-described electric retractable door mirror can be formed as separate assembled bodies that are separately assembled, so that one type of electric harness is separately provided for the harness 4 different for each vehicle type. It is only necessary to standardize the case units 2 and prepare them as one type of part, and the parts management of the distribution unit 2 is simplified. Also, the assembling of the speed reduction mechanism, the clutch mechanism, the switch mechanism, and the drive motor of the electronic unit 2 can be automated, and the electronic unit 2
Is also simplified.

However, in the above-mentioned electric retractable door mirror, the electric unit and the harness have the external structure of the electric unit 2 and the harness 4, so that the electric unit 2 holds the harness 4 with the electric unit. The harness holder 220 is required.
There is a problem that the projecting amount T distribution unit 2 becomes large.

The present invention relates to the improvement of the electric unit and the harness in the above-mentioned electric retractable door mirror, and an object of the present invention is to reduce the size of the electric unit in the electric retractable door mirror. To provide a unit and a harness.

[0015]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a separate assembly in which the electronic unit and the harness are separately assembled, and a shaft holder of the electronic unit, An insertion hole and a hollow cylindrical portion are provided in the shaft and the cover in the axial direction of the shaft, a tube is externally fitted to the harness, and the harness is driven outside the electronic unit with the control switch device and the power supply side. A connector for electrically connecting to the motor and the switch mechanism side is provided.

According to the present invention, when the electronic unit and the harness are mounted on the door mirror by the above configuration, first,
The harness is inserted through the insertion hole and the cylindrical portion, and then one end of the tube externally fitted to the harness is externally fixed to the cylindrical portion in a watertight manner, and the other end of the tube is lowered to prevent water from entering. By connecting the connectors at both ends of the harness to the control switch device and the connector on the power supply side and the drive motor and the connector on the switch mechanism side outside the electronic unit, respectively,
The drive motor, the switch mechanism, and the electric equipment of the harness are electrically connected, and the drive motor, the switch mechanism, and the electric equipment of the harness are provided with waterproof measures.

As described above, since the electrical unit and the harness can be separately assembled to each other, the electrical unit can be shared, and the component management of the electrical unit can be performed. Is simplified, and the assembling process of the electronic unit is also simplified. Particularly, in the present invention, since the harness is inserted into the shaft holder, the insertion hole of the shaft and the cylindrical portion of the cover to be held inside the electronic unit, the conventional harness is held outside the electronic unit. Compared to the technology, because the harness holder part of the conventional technology was not provided,
The electronic unit can be reduced in size.

[0018]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an electric retractable door mirror according to an embodiment of the present invention; FIG. In the figure, FIG.
14 to FIG. 14 indicate the same components. 6 is connected to ',', ',' in FIG. 7 to provide an exploded perspective view of the entire electric retractable door mirror.

The electronic unit 2 and the harness 4 of the present invention in this embodiment are composed of separate assembled bodies which are separately assembled. The shaft holder 20 and the shaft 21 of the above-mentioned electronic unit 2 have insertion holes 210 formed therein.
Are provided in the axial direction of the shaft 21. It is a so-called hollow shaft. Also, the cover 23 of the electronic unit 2
A hollow cylindrical portion 230 is provided in the upper part of the shaft 21 in the axial direction of the shaft 21.

On the other hand, the wire harness 41 of the harness 4
A first inner tube 5 is externally fitted to 42 and 43, and an outer tube (tube) 50 is externally fitted to the first inner tube 5. The second inner tube 51 is fitted to the second wire harness 42 and the third wire harness 43. Harness 4 described above
One end of each of the wire harnesses 41, 42, and 43 has a connector 45 for a power supply (for a switch mechanism and a drive motor).
And a connector (not shown) for a power unit and a connector 46 for a heater. The power supply connector 45, the power unit connector,
The heater connector 46 is electrically connected to the drive motor and switch mechanism side connector 44, the power knit side connector (not shown), and the heater side connector (not shown) outside the electronic unit 2. Is what is done. The heater connector 46 described above is connected to the electrical unit 2.
Is held by a holder 233 provided above the cover 23.

The gear case 22 and the cover 23 of the electronic unit 2 are connected to an engaging claw 225 provided on the gear case 22 side.
And the engagement hole 232 provided on the cover 23 side, so that they are fitted in a watertight manner. That is, as shown in FIG. 3, a seal projection 222 is provided integrally on the entire periphery of the upper opening of the gear case 22, and a seal recess 231 is provided on the entire periphery of the lower opening of the cover 23. A seal material 223 is applied between the seal protrusion 222 and the seal recess 231 over the entire circumference.

On the other hand, a breathing hole 224 is provided from the bottom to the lower part of the gear case 22 described above. As a result,
The inside and the outside of the gear case 22 and the cover 23 of the electronic unit 2 are communicated with each other via the gap S between the upper surface of the shaft holder 20 and the bottom surface of the gear case 22 and the above-described breathing hole 224. .

As shown in FIGS. 6 and 7, one end (upper end) of the rotating shaft is joined to the shaft of the driving motor M by the speed reducing mechanism 24 housed in the cover 23 and the gear case 22 of the electronic unit 2. A first worm 241 attached via the first worm, and a first helical gear 2 as a first worm wheel meshed with the first worm 241
42, a second worm 243 having one end of the rotation shaft axially movable and non-rotatably mounted in the center through hole of the first helical gear 242 by the D-cut surface, and meshing with the second worm 243 Helical gear 244 as a second worm wheel, and an output gear 24 of a spur gear fixed coaxially to the second helical gear 244.
5 and a spur gear idle gear 246 interposed between the output gear 245 and a clutch gear 252 as an input gear described later, and meshed with the output gear 245 and the clutch gear 252, respectively. Have been.

Here, the first worm 241 and the first helical gear 242 as the first worm wheel are described.
(First stage worm gear), a second worm 243 and a second helical gear 244 as a second worm wheel
(2nd worm gear) constitutes a 2nd worm gear. Both ends of the rotation shaft of the first worm 241 are rotatably supported by the gear case 22 and the plate 27 housed and fixed in the gear case 22 and the cover 23. Both ends of the rotation shaft of the second worm 243 are rotatably supported by the plate 27, and a thrust bearing is provided between the plate 14 and both end surfaces of the rotation shaft of the second worm 243. Ball 270 is interposed. Further, the above-mentioned second helical gear 244 and output gear 245 are rotatably attached to a screw (axial screw) 271 screwed from the plate 27 into the gear case 22. The screw 271 is non-rotatably attached to the plate 27 and the gear case 22 by a clip 272 and a nut 273. Furthermore, the above-mentioned idle gear 246 is rotatably supported by a pin 274 fixed to the plate 27 and the gear case 22. The clutch mechanism 25 housed in the cover 23 and the gear case 22 of the above-described electronic unit 2 includes:
You can manually rotate the mirror assembly (not shown)
Alternatively, when something hits the mirror assembly and rotates the mirror assembly to buffer the mirror assembly, the edge between the movable mirror assembly and the fixed mirror base (not shown) is cut off. It is.

As shown in FIG. 7, the clutch mechanism 25 includes a push nut 250, a compression spring 251 and a clutch gear 25 which are externally fitted to the shaft 21 in order from the top.
2, clutch holder 253, washer 254,
55. The above-described clutch gear 252 is formed of a spur gear, and is rotatable with respect to the shaft 21.
A locking groove is provided on the lower surface. The above-mentioned clutch holder 253
Is fixed to the shaft 21 and has a locking claw on the upper surface. The above-described push nut 250 is engaged with the engagement groove at the upper end of the shaft 21, and the above-described compression spring 251 is
Compress. Due to the elastic force of the compression spring 251, the locking claw on the upper surface of the clutch holder 253 is locked in the locking groove on the lower surface of the clutch gear 252, and the clutch gear 2
52 and the clutch holder 253 are in a connected state.

The drive motor M housed in the cover 23 and the gear case 22 of the electronic unit 2 is fixed to the plate 27 by a screw 275.
The switch mechanism 26 housed in the cover 23 and the gear case 22 of the electronic unit 2 includes a printed circuit board (PCB) 260 and electronic components 26 such as a thermistor mounted on the printed circuit board 260.
1 and a first connector portion 2 fixed to the print circuit board 260 and electrically connected to and held by the drive motor M described above.
62 and a second connector section 440 fixed to the print circuit board 260. The switch mechanism 26 is sandwiched and fixed between the cover 23 and the plate 27 described above. When the mirror assembly is rotated with respect to the mirror base and reaches a predetermined position by driving the drive motor M, the switch mechanism 26 energizes the drive motor M by a stopper action of a stopper mechanism 28 described later. The mirror assembly is shut off to position the mirror assembly at a predetermined standing position or storage position.

On the other hand, a tubular portion 441 for a connector is integrally provided on a side portion of the cover 23. The second connector portion 440 is located on the tubular portion 441. The portion 441 constitutes the connector 44 on the drive motor and switch mechanism side described above.

The shaft holder 2 of the above-mentioned electronic unit 2
A stopper mechanism 28 is provided between the upper surface of the gear case 22 and the bottom surface of the gear case 22. The stopper mechanism 28 includes an arc-shaped groove 28 provided on the upper surface of the shaft holder 20.
0 and a ball 281 that is rotatably provided on the bottom surface of the gear case 22. Due to the elastic force of the compression spring 251 of the clutch mechanism 25 described above, the ball 281 causes the shaft holder 20 to move upward (through the clutch mechanism 25) through the shaft 21.
Is pressed downward against the bottom surface of the groove 280.

When the ball 281 comes into contact with the steps at both ends of the groove 280, the above-mentioned stopper action is performed, and the mirror assembly is positioned at a predetermined standing position or storage position. The height of the ball 281 and the height of the step at both ends of the groove 280 cannot be overcome by the torque of the drive motor M, but can be overcome by manual rotation or shock-absorbing rotation of the mirror assembly.

Then, the above-mentioned shaft holder 20, shaft 21, stopper mechanism 28, gear case 22, reduction mechanism 24, clutch mechanism 25, plate 27, drive motor M, switch mechanism 27, and cover 23 are automatically and sequentially automatically machined. The electronic unit 2 is configured by being assembled.

Since the electronic unit and the harness of the present invention in this embodiment are configured as described above, when mounting the electronic unit 2 and the harness 4 on the door mirror, first, the harness 4 The other end side of the wire harnesses 41, 42, and 43 together with the first inner tube 5, from above the cover 23, the cylindrical portion 230 and the insertion hole 21.
0 and pulled out from the shaft holder 20 to the outside. Next, one end (lower end) of the outer tube 50 of the harness 4 is externally fitted and fixed to the cylindrical portion 230 in a watertight manner. The watertight and integrated means for external fitting and fixing includes, for example, tape winding, bonding, pressure bonding, heat shrinkage, welding, press fitting and the like. The other end (upper end) of the outer tube 50 is turned downward to prevent water from entering. Then, harness 4
, A power supply connector 45 at one end of the first wire harness 41, a power unit connector of the second wire harness 42, and a heater connector 46 of the third wire harness 43.
Are electrically connected to the drive motor and switch mechanism-side connector 44, the power unit-side connector, and the heater-side connector outside the electronic unit 2. On the other hand, the wire harnesses 41, 42, 4 of the harness 4
A control switch device and a power connector (not shown) are connected to the other end of the switch 3, and the connector is electrically connected to the control switch device and a connector on the power source outside the electronic unit 2. As a result, the drive motor M, the switch mechanism 26, and the electrical equipment of the harness 4 are electrically connected, and the drive motor M, the switch mechanism 26, and the electrical equipment of the harness 4 are provided with waterproof measures.

As described above, the electronic unit and the harness of the present invention in this embodiment can be formed as separate assembled bodies in which the electronic unit 2 and the harness 4 are separately assembled. The unit 2 can be shared, the component management of the power distribution unit 2 is simplified, and the assembling process of the power distribution unit 2 is also simplified. In the present invention, the harness 4 is connected to the shaft holder 20, the insertion hole 210 of the shaft 21, and the cover 2.
3 is held inside the electronic unit 2 by being inserted into the cylindrical portion 230 of the third unit. Therefore, as shown in FIG. 11, a conventional technique of holding the harness outside the electronic unit (shown by a two-dot chain line) ), The size of the electronic unit (shown by a solid line) 2 of the present invention can be reduced because the harness holder of the prior art is not provided.

In particular, in this embodiment, the inside and outside of the gear case 22 and the cover 23 of the electronic unit 2
It is communicated via the gap S between the upper surface of the shaft holder 20 and the bottom surface of the gear case 22 and the above-mentioned breathing hole 224. For this reason, between the inner peripheral surface of the cylindrical portion 2320 of the cover 23 and the outer peripheral surface of the first inner tube 5, the cover 23
Between the lower end surface of the cylindrical portion 230 and the upper end surface of the shaft 21;
The inner peripheral surface of the shaft 21 and the first armature tube 5
The space between the gear case 22 and the cover 23 becomes smaller due to a pressure difference between the outside and the outside of the gear case 22 and the cover 23, and water is absorbed from the other end opening of the outer tube 50 and the bottom surface of the shaft holder 20. Can be prevented.

Also, in this embodiment, since the breathing hole 224 is provided from the bottom surface to the lower portion of the gear case 22, water must be supplied to the gear case 22 and the cover 2.
3 is discharged outside through the above-mentioned breathing hole 224 through the gap S.

Further, in this embodiment, the first inner tube 5 is externally fitted to the wire harnesses 41, 42, 43 of the harness 4, and the second inner tube 5 is fitted to the second wire harness 42 and the third wire harness 43. 51
The wire harnesses 41, 4
2 and 43 can be easily inserted into the insertion hole 210 of the shaft 21, and twisting and entanglement of the wire harnesses 41, 42 and 43 due to the rotation of the mirror assembly can be prevented. Thereby, the watertightness is further improved. The first inner tube 5 and / or the second inner tube 51 are not always necessary.

In the above embodiment, the electric retractable door mirror is fixed to the door of the automobile.
It may be fixed to the body other than the door. In FIG. 1, reference numeral 10 denotes a cover of the mirror base 1.

Further, in the above embodiment, the power unit for tilting the mirror surface up, down, left and right is provided, but this power unit is not always required. In this case, the second wire harness 42 and the connector of the harness 4 are not required.

Further, in the above embodiment,
Although a heater for evaporating and removing water adhering to the mirror surface is provided, this heater is not always necessary. In this case, the third wire harness 43 and the connector 46 of the harness 4 are not required.

[0039]

As is apparent from the above description, the electronic unit and the harness in the electric retractable door mirror according to the present invention are obtained by inserting the harness into the shaft holder, the insertion hole of the shaft and the cylindrical portion of the cover. Since the harness holder is held inside the electronic unit, the size of the electronic unit can be reduced as compared with the related art in which the harness is held outside the electronic unit, because the harness holder of the related art is not provided.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an essential part corresponding to a cross-section taken along line II in FIG. 8, showing an embodiment of an electric unit and a harness in an electric retractable door mirror of the present invention.

FIG. 2 is a sectional view corresponding to a section taken along line II-II in FIG.

FIG. 3 is an enlarged sectional view of a part III in FIG.

FIG. 4 is a perspective view of the electronic unit and the harness in an assembled state.

FIG. 5 is an exploded perspective view of the electrical unit and the harness.

FIG. 6 is an exploded perspective view of a cover, a drive motor, a switch mechanism, and a plate.

FIG. 7 is an exploded perspective view of a shaft holder, a shaft, a gear case, a speed reduction mechanism, and a clutch mechanism.

FIG. 8 is a plan view of the electronic unit and the harness in an assembled state.

FIG. 9 is a front view of the electronic unit and the harness in an assembled state.

FIG. 10 is a side view of the electronic unit and the harness in an assembled state.

FIG. 11 is an explanatory diagram comparing the size of a conventional electronic unit and the size of an electronic unit of the present invention.

FIG. 12 is a partially cutaway and partially transparent plan view schematically showing a general electric retractable door mirror.

FIG. 13 is a plan view showing a wiring unit and a harness in a conventional electric retractable door mirror.

FIG. 14 is a front view of the same.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Mirror base, 2 ... Electric unit, 20 ... Shaft holder, 21 ... Shaft, 210 ... Insertion hole, 22 ... Gear case, 224 ... Express, 23 ... Cover, 230 ... Cylindrical part, 24 ... Reduction mechanism, 25 ... clutch mechanism, 26 ... switch mechanism, 27 ... plate, 28 ... stopper mechanism, M ...
Drive motor, 3 ... Mirror assembly, 4 ... Harness, 4
1, 42, 43: wire harness, 5: first inner tube, 50: outer tube.

Claims (3)

[Claims] 1. A mirror base fixed to a vehicle body such as an automobile door, a shaft holder fixed to the mirror base, a shaft fixed to the shaft holder, and a shaft on a fixed side of the shaft and the shaft holder. A gear comprising a gear case rotatably mounted around, a cover watertightly mounted on the gear case, a drive motor, a reduction mechanism, a clutch mechanism, and a switch mechanism housed in the cover and the gear case. A unit, a harness for electrically connecting a control switch device and a power supply side installed in a driver seat to the drive motor and the switch mechanism side, and a mirror assembly attached to a rotating side of the gear case. Driving the drive motor by operating the control switch device. The mirror assembly is rotated with respect to the mirror base, and the power to the drive motor is cut off at a predetermined position by the operation of the switch mechanism, so that the mirror assembly is in the standing position or the storage position. In the door mirror, the electronic unit and the harness are separately assembled to each other, and are provided in the shaft holder, the shaft, and the cover in the axial direction of the shaft, and the harness is inserted. An insertion hole and a hollow cylindrical portion, a tube which is externally fitted to the harness, one end of which is fixedly externally fitted to the cylindrical portion in a watertight manner, and the other end of which is directed downward to prevent water from entering, The harness, which is inserted into the insertion hole and the cylindrical portion of the electronic unit in a watertight manner, is connected to the control switch outside the electronic unit. Chi apparatus and the power supply side and the drive motor and the switch mechanism side and the electric retractable door electric price unit and harness the mirror, characterized in that each have a connector for being electrically connected. 2. The apparatus according to claim 1, wherein the inside and the outside of the gear case and the cover are communicated with each other through a gap between the shaft holder and the gear case and a breathing hole provided in the gear case. The electric unit and the harness in the electric retractable door mirror according to claim 1. 3. The harness according to claim 1, wherein a part of the harness is inserted into the inner tube, and the inner tube is inserted into the tube, the insertion hole, and the cylindrical portion. Electrical unit and harness for electric retractable door mirrors.