JP2001253297A - Electric retractable outer mirror for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electrical retractable outer mirror for a vehicle capable of rotating to certain degrees with an external force of an appropriate magnitude and of reducing the load at that time on the clutch constituent parts. SOLUTION: A rotary shaft 3' is held rotatably on a frame 2 to be fixed to a vehicle body, and an outer mirror unit is held by a mirror mounting flange 3a at the tip of the rotary shaft 3', and inside the frame 2, a driving part unit 20 is provided. A clutch unit 40 to control the rotation and stop of the rotary shaft 3' is installed inside the frame 2 situated coaxial with the rotary shaft 3', and coaxially with the rotary shaft 3', a ring-shaped leaf spring 45 is installed which makes a slip so that an external force exceeding the specified level given by the outer mirror unit is hindered from being transmitted to the driving part unit 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrically retractable outer mirror for a vehicle in which an outer mirror is rotatable between a use position and a storage position.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG.
The rotation between the use position and the storage position of the outer mirror unit 10 provided on the front left and right of the vehicle is electrically driven by remote control from a driver's seat.

[0003] In the case where the outer mirror unit 10 is electrically driven, a stop position between the use position and the storage position is arbitrary.
As disclosed in Japanese Patent Application Laid-Open No. 5726, there is known an apparatus employing a two-way clutch mechanism for transmitting a rotational force from a drive unit to a rotating shaft and preventing unexpected rotation of the rotating shaft.

FIG. 10 shows the structure of a vehicle electric retractable outer mirror employing such a two-way clutch mechanism.

In FIG. 10, reference numeral 2 denotes a mount fixed to the vehicle body 1, 3 denotes a rotating shaft rotatably held by the mount 2, 20
Is a drive unit provided in the gantry 2, and 30 is a clutch unit similarly provided in the gantry 2.

The gantry 2 includes a housing 2a opened downward, a lid 2b for closing a lower opening of the housing 2a, and a housing 2a.
And a partition wall 2c that divides the inside into upper and lower parts.

[0007] A mirror mounting flange portion 3 a for fixing a connecting bracket 12 to which a base end of a mirror shaft 11 of the outer mirror unit 10 is fixed with a screw 4 is formed at a distal end of the rotating shaft 3. Also, the base end 3 of the rotating shaft 3
b is held by the lid 2b.

The outer mirror unit 10 includes a pipe-shaped mirror shaft 11 bent into a predetermined shape, a disc-shaped connection bracket 12, a rear-view mirror 13 provided at the tip of the mirror shaft 11, and which visually recognizes the rear of the vehicle body. An under-mirror 14 (only on the side opposite to the driver's seat) which is provided near the tip of the mirror shaft 11 and visually recognizes the lower front of the vehicle body is provided.

The drive unit 20 includes a drive motor 21 capable of rotating forward and backward, a bracket 22 for fixing the drive motor 21 to the partition 2a in the gantry 2, and a motor output shaft (not shown) projecting from the lower surface of the partition 2c. And a fixed drive gear 23 (see FIG. 9).

The clutch unit 30 includes an outer race 31 fixed to the lid 2b with the screw 5 and an inner race fixed to the base end 3b via a push nut 32 so as to be rotatable in the outer race 31. Race 33
A release member 35 rotatably held on the outer periphery of the inner race 33 via a C-ring 34, and as shown in FIG. 9, a pair of rollers 36 and a leaf spring 37.

The inner race 33 is coaxially located so as to rotate integrally with the rotating shaft 3, and has a disk-shaped base 33a and a cylindrical portion 3 rising from the center of the base 33a.
3b, a through-hole 33c formed from the cylindrical portion 33b to the base 33a and penetrated by the base end 3b;
b, a slit 33d formed near the protruding end and fitted with the C-ring 34, a sector 33e radially protruding from the tri-divided position of the cylindrical portion 33b, and an adjacent sector 33
b, and a flat portion 33g formed between the sector-shaped protrusion 33e and the concave portion 33f.

The release member 35 is loosely fitted in a recess 33c located between an inner peripheral surface 31a of the outer race 31 and an inner race 33, as shown in FIG. Fan arm 35b.

The roller 36 and the leaf spring 37 are formed between the inner peripheral surface 31 a of the outer race 31 which is a column and the inner race 33.
Is located in the gap 38 formed by the flat portion 33g. The roller 36 is disposed in the gap 38 between the fan-shaped projection 33b and the fan-shaped arm 35b, near the fan-shaped arm 35b. The spring 37 is inserted near the sector 33b between the sector 33b and the arm 35b.
The leaf spring 37 urges the roller 36 toward the fan-shaped arm 33b.

Therefore, the gap between the rollers 36 is
7 is always formed in the gap 38 because it is formed of a wall surface that is narrowed in the urging direction, so that the rotation shaft 3 does not unexpectedly rotate integrally with the inner race 33 due to the bite.

When the drive motor 21 is driven to rotate the drive gear 23 in a predetermined direction, for example, when the rotation direction is the clockwise direction (positive direction) in FIG. The gear 35a rotates in the counterclockwise direction (reverse direction).

The rotation of the driven gear 35a in the opposite direction first causes a rotational force in the opposite direction of the sector arm 35b integrated with the release member 35, and the sector arm 35b contacts the roller 36 located in the opposite direction of the sector arm 35b. The leaf spring 37 is moved in contact with the leaf spring 37.

When the release member 35 further rotates in the reverse direction from this state, the movement of the roller 36 releases the bite of the roller 36 into the gap 38, and the sector arm 3
The inner race 33 rotates integrally with the rotating shaft 3 while the inner mirror 5b and the concave portion 33f are in contact with each other.
Starts rotating in the storage direction or use direction.

At this time, the rotation of the inner race 33 is displaced (or rolled) in the reverse direction, that is, in the direction of releasing the bite into the gap 38, in the roller 36 located in the forward direction of the sector arm 35b. Therefore, inner race 3
The rotation of 3 in the opposite direction is not prevented by the roller 36 located in the clockwise direction of the sector arm 35b.

When the rotation of the outer mirror unit 10 to an arbitrary position or a use position or a storage position is completed and the drive of the drive motor 21 is stopped, the sector arm 35
Since the rollers 36 located on both sides of the inner arm 33 re-engage into the gaps 38 by the urging of the respective leaf springs 37, the rotation of the inner race 33 in the forward direction is caused by the engagement of the rollers 36 located in the forward direction of the fan-shaped arm 35b. The rotation of the inner race 33 in the reverse direction is prevented by the engagement of the roller 36 located in the opposite direction of the fan-shaped arm 35b.

The rotation of the rotary shaft 3 in the forward direction can be achieved by controlling the current of the drive motor 21 to rotate the drive gear 23 in the reverse direction. When the drive motor 21 detects the use position or the storage position by a lock mechanism (not shown), the drive motor 21 determines that the outer mirror unit 10 is located at the use position or the storage position by a lock current (overcurrent). Turn off.

[0021]

However, in such a vehicle electric retractable outer mirror, since the outer mirror unit 10 and the drive motor 21 are directly connected to each other, the outer mirror unit 10 Cannot be manually forcibly rotated from the outside of the vehicle, or requires a considerable external force, and at the same time, the clutch components (the outer race 31, the inner race 33, the roller 36, each gear 23, 35a) causes a problem that deterioration or breakage is caused due to a large load.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems, and to permit the rotation of the outer mirror by an appropriate external force and reduce the load on the clutch components at that time. An electric retractable outer mirror is provided.

[0023]

According to a first aspect of the present invention, there is provided a vehicle electric retractable outer mirror, comprising: a rotating shaft rotatably held on a base fixed to a vehicle body; An outer mirror unit held at a mirror mounting flange portion at a tip of a shaft, a driving unit provided in the gantry, and a cylindrical outer race fixed in the gantry coaxial with the rotation axis, The inner race held by the rotating shaft so as to rotate in the outer race, and the inner race of the outer race and the outer race of the inner race can be displaced into a gap in which an opposing interval is changed. A biting member provided, a biasing member provided in the gap and constantly biasing the biting member toward a narrower gap between the gaps, and a biasing member provided coaxially with the rotating shaft. And a release member that rotates following the driving of the driving means to rotate and rotate the rotating shaft after the bite member is displaced against the urging of the urging member to release the bite. In the electric retractable outer mirror for a vehicle, a gist is provided with a slip member provided coaxially with the rotation shaft so as not to transmit an external force of a predetermined value or more from the outer mirror unit to the drive unit unit. .

According to a second aspect of the present invention, the slip member is located at a base end of the rotating shaft and controls the connection between the rotating shaft and the inner race by an urging force. The gist is a ring-shaped leaf spring.

According to a third aspect of the present invention, there is provided an electric vehicle retractable outer mirror according to claim 3, wherein the slip member is located at a tip of the rotating shaft and controls the connection between the rotating shaft and the outer mirror unit by an urging force. The gist is a leaf spring.

[0026]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a vehicle electric retractable outer mirror according to an embodiment of the present invention. The vehicle electric retractable outer mirror of the present invention is
In addition to the large vehicle body 1 such as a truck shown in FIG.
It can be installed on a passenger type vehicle body, and when installed on a truck or the like as described above, the appearance is the same as that of FIG.

Embodiment 1 FIGS. 1 to 4 and FIG.
FIG. 9 shows a vehicle electric retractable outer mirror according to a first embodiment of the present invention.

In the figure, reference numeral 2 denotes a frame fixed to the vehicle body 1; 3 ', a rotating shaft held rotatably by the frame 2;
Denotes an outer mirror unit, 20 denotes a drive unit provided in the gantry 2, and 40 denotes a clutch unit provided in the gantry 2.

The outer mirror unit 10 includes a pipe-shaped mirror shaft 11 bent into a predetermined shape, a disc-shaped connection bracket 12, a rear-view mirror 13 provided at the tip of the mirror shaft 11 and visually recognizing the rear of the vehicle body. An under-mirror 14 (only on the side opposite to the driver's seat) which is provided near the tip of the mirror shaft 11 and visually recognizes the lower front of the vehicle body is provided.

The gantry 2 includes a housing 2a opened downward, a lid 2b fixed to the housing 2a via screws 6 so as to close the lower opening of the housing 2a, and a housing 2a. It has a partition wall 2c that divides the inside up and down, and a stopper 2d protruding from the upper surface of the housing 2a.

The rotating shaft 3 'includes a mirror mounting flange portion 3a for fixing the connecting bracket 12 with the screw 4, and a base end portion 3 facing the inside of the gantry 2 and rotatably held by the lid 2b.
b.

As shown in FIG. 2, the mirror mounting flange 3a is formed by integrally forming a small diameter portion 3c in a predetermined range and a large diameter portion 3d in a range excluding the small diameter portion 3c coaxially. Then, two step portions 3e, 3 formed in the circumferential direction integrally formed by a difference in diameter between the small diameter portion 3c and the large diameter portion 3d.
One end of the outer mirror unit 10 comes into contact with a stopper 4d projecting from the upper surface of the housing 4a, which will be described later, thereby restricting the rotation range of the outer mirror unit 10 on the use position side, and the other of the steps 3e and 3f comes into contact with the stopper 4d. This restricts the rotation range of the outer mirror unit 10 on the storage position side.

The drive unit 20 includes a drive motor 21 capable of rotating forward and reverse, a bracket 22 for fixing the drive motor 21 to the partition 2a in the gantry 2 via screws 24, and a partition 2c.
And a drive gear 23 fixed to a motor output shaft 21a protruding from the lower surface of the motor.

The clutch unit 40 includes a two-stage cylindrical outer race 3 fixed to the lid 4b via screws 5.
1, an inner race 33 rotating inside the outer race 31, and a pair of three pairs of rollers 36 and a pair of three pairs interposed in a gap 38 between the inner peripheral surface 31a of the outer race 31 and the inner race 33. Leaf spring 37 and C ring 3
And a nut 4 screwed to the base end 3a of the rotating shaft 3 '.
1 and a push nut 42 for holding the nut 41
And the rotating shaft 3 ′ located on the bottom side of the inner race 33.
And a ring-shaped leaf spring 45 as a slip member which resiliently contacts the nut 41 via a washer 44 and simultaneously urges the D-hole plate 43 toward the inner race 33. It has.

The detailed structure of the outer race 31, the inner race 33, the C-ring 34, the release member 35, the roller 36, the leaf spring 37, and the gap 38 has been described in the prior art (see FIGS. 8 and 9), and therefore will not be described. I do. However, the inner race 33 described in the related art is held so as to rotate integrally with the rotating shaft 3 ′ (for example, forming a chamfer on the base end portion 3 b so that the hole of the inner race 33 matches the shape of the chamfer). On the other hand, the cross-sectional shape of the base end portion 3b and the hole shape of the inner race 33 are such that the inner race 33 of the first embodiment can rotate independently of the rotation shaft 3 '. Are both true circles.

The ring-shaped leaf spring 45 is shown in FIG.
As shown in (B), the base end 3b of the rotating shaft 3 'is formed in a ring shape having a through hole 45a therethrough.
A pair of lips 45c and 45 forming an absorption gap 45b by expanding so as to open toward the through hole 45a.
d. One surface of the ring-shaped leaf spring 45 (the surface that resiliently contacts the D hole plate 43) is a flat surface, and the lip 45d is inclined so that the lip 45d has elasticity.

In the above configuration, the drive motor 21 is driven to drive the drive gear 23 in a predetermined direction (hereinafter referred to as a forward direction).
, The driven gear 35a meshing with the drive gear 23
Rotates in the opposite direction.

The rotation of the driven gear 35a in the reverse direction first causes a rotational force in the reverse direction of the sector arm 35b integrated with the release member 35, and the sector arm 35b contacts the roller 36 located in the opposite direction of the sector arm 35b. The leaf spring 37 is moved in contact with the leaf spring 37.

When the release member 35 further rotates in the reverse direction from this state, the roller 36 moves to release the bite from the gap 38 on the moving side, and the sector arm 35
The inner race 33 rotates while b and the recess 33f are in contact with each other.

The inner race 33 and the rotating shaft 3 'are linked by the surface friction between the D-hole plate 43 and the base 33a due to the urging force of the ring-shaped leaf spring 45.
The rotation shaft 3 ′ is rotated integrally with the rotation of the inner race 33, and the rotation of the outer mirror unit 10 in the storage direction or the use direction is started.

On the other hand, for example, when the mirror shaft 11 is gripped due to a temporary stop of the vehicle and the outer mirror unit 10 is forcibly rotated from the use position to the storage position side, the rotation is required. The rotating shaft 3 'attempts to rotate in the same direction due to an external force.

At this time, in the drive system, a holding force for keeping the rotary shaft 3 'at the current position is generated by the engagement of the drive motor 21 and the gears 23, 35a.

On the other hand, the connection between the rotating shaft 3 'and the inner race 33 is made by a D-hole plate 43 which rotates integrally with the rotating shaft 3'.
At the time when the holding force is larger than the external force and the external force is larger than the urging force of the ring-shaped leaf spring 45 because it depends on the surface pressure accompanying the urging force of the ring-shaped leaf spring 45 with the inner race 33. As a result, a slip phenomenon occurs between the ring-shaped leaf spring 45 and the inner race 33 with respect to the D-hole plate 43.

This slip phenomenon allows the rotation of the rotating shaft 3 ′, the nut 41, the push nut 42, the washer 44, the ring-shaped leaf spring 45, and the D-hole plate 43 integral with the outer mirror unit 10, and at the same time, the inner race 33. In addition, since the rotation of the release member 35 is prevented, the outer mirror unit 10 can be rotated by an external force while reducing the load on the drive motor 21.

Since the external force due to the air resistance generated in the mirrors 13 and 14 when the vehicle is running is smaller than the above-described artificial external force, the outer mirror unit 10
Is set so as not to rotate.

Further, in the above embodiment, the D-hole plate 43 and the base 3 using the urging force of the ring-shaped leaf spring 45 are used.
An example in which the independent rotation of the rotating shaft 3 ′ is permitted by the surface frictional force with the surface 3a has been disclosed. It is also possible to control whether or not a slip phenomenon has occurred by performing.

(Embodiment 2) FIGS. 5 to 9 show Embodiment 2 of a vehicle electric retractable outer mirror according to the present invention. In the first embodiment, the configuration in which the rotation of the outer mirror unit 10 due to the external force until the rotation of the rotary shaft 3 is integrated and the connection of the drive paths thereafter is cut off is disclosed. The connection with the drive path of the external force is interrupted until only 10 rotations.

In the drawing, reference numeral 2 denotes a mount fixed to the vehicle body 1; 3 "a rotating shaft rotatably held by the mount 2;
Is an outer mirror unit, 20 is a drive unit provided in the gantry 2, and 30 is a clutch unit similarly provided in the gantry 2.

The mount 2, the drive unit 20, and the clutch unit 30 are the same as those described above.
Only the differences will be described.

In the figure, the outer mirror unit 50
Is a pipe-shaped mirror shaft 5 bent into a predetermined shape.
1, a disc-shaped connection bracket 52 formed at the base end of the mirror shaft 51, and a rear-view mirror 13 provided at the tip of the mirror shaft 51 to visually recognize the rear of the vehicle body;
Under mirror 14, which is provided near the tip of mirror shaft 51 and allows the front lower part of the vehicle body to be viewed (only on the side opposite to the driver's seat)
And a D-hole plate 53, a ring-shaped leaf spring 45, a washer 54, and a nut 55 for holding the connection bracket 52 with the mirror mounting flange 3A in this order from the bottom.

The rotating shaft 3 ″ is a mirror mounting flange 3.
a, a base end 3b. A chamfer 3g is formed at the lower end of the base end 3b, and the inner race 33 rotates integrally with the rotating shaft 3 "by the chamfer 3g.

The small-diameter portion 3
c, having a large diameter portion 3d and steps 3e and 3f integrally, a chamfered protrusion 3h raised upward, a cylindrical protrusion 3i raised from the chamfered protrusion 3h, and a screw fit raised from the cylindrical protrusion 3i. The projection 3j is integrally provided.

A D-hole plate 53 is engaged with the cylindrical projection 3i, a ring-shaped leaf spring 45 and a washer 54 are inserted into the cylindrical projection 3i, and a nut 55 is screwed into the screwing projection 3j.

The ring-shaped leaf spring 45 is shown in FIG.
The same thing as that shown in (B) is used, but the top and bottom are opposite to the use example of the first embodiment.

In the above configuration, the drive motor 21 is driven to drive the drive gear 23 in a predetermined direction (hereinafter referred to as a forward direction).
, The driven gear 35a meshing with the drive gear 23
Rotates in the opposite direction.

The rotation of the driven gear 35a in the reverse direction first causes a rotational force in the reverse direction of the sector arm 35b integrated with the release member 35, and the sector arm 35b contacts the roller 36 located in the direction opposite to the sector arm 35b. The leaf spring 37 is moved in contact with the leaf spring 37.

When the release member 35 further rotates in the reverse direction from this state, the roller 36 moves to release the bite from the gap 38 on the moving side, and the fan-shaped arm 35
The inner race 33 rotates integrally with the rotating shaft 3 ″ while the outer mirror unit 10
Starts rotating in the storage direction or use direction.

On the other hand, when the outer mirror unit 50 is forcibly rotated from the use position to the storage position side by gripping the mirror shaft 51 due to, for example, a temporary stop of the vehicle, the rotating shaft 3 is moved by the external force. "Try to rotate in the same direction.

At this time, in the drive system, a holding force for keeping the rotary shaft 3 ″ at the current position is generated by the engagement of the drive motor 21 and the gears 23 and 35a.

On the other hand, the connection between the rotary shaft 3 "and the outer mirror unit 50 is caused by the surface pressure caused by the urging force of the ring-shaped leaf spring 45 between the D-hole plate 52 and the mirror mounting flange 3a which rotate integrally with the rotary shaft 3". At the time when the holding force is larger than the external force and the external force is larger than the urging force of the ring-shaped leaf spring 45, a slip phenomenon occurs between the D-hole plate 43 and the ring-shaped leaf spring 45. appear.

This slip phenomenon is caused by the connection bracket 52
Only rotation (only outer mirror unit 10 rotation)
To prevent the rotation of the rotating shaft 3 ″, the D-hole plate 53, the ring-shaped leaf spring 45, the washer 54, the nut 55, the push nut 32, the inner race 33 and the release member 35, so that the load on the drive motor 21 is reduced. , And the outer mirror unit 50 can be rotated by an external force.

Since the external force due to the air resistance generated in the mirrors 13 and 14 when the vehicle is running is smaller than the above-mentioned artificial external force, the outer mirror unit 50 is unexpectedly exposed.
Is set so as not to rotate.

In the above embodiment, an example is disclosed in which the independent rotation of only the connection bracket 52 is permitted by the surface friction between the D-hole plate 53 and the connection bracket 52 using the urging force of the ring-shaped leaf spring 45. However, for example, it is also possible to control the occurrence of the slip phenomenon by performing a surface treatment or the like for controlling the frictional force on at least one of the contact surfaces between the D-hole plate 53 and the connection bracket 52.

[0064]

As described above, in the electric retractable outer mirror for a vehicle according to the present invention, the outer shaft of the outer mirror unit is coaxial with the rotating shaft so as to prevent the external force of a predetermined value or more from being transmitted to the drive unit unit. , The rotation of the outer mirror is allowed by an appropriate external force, and the load on the clutch components at that time can be reduced.

[Brief description of the drawings]

FIG. 1 is an enlarged sectional view of a main part of a vehicle electric retractable outer mirror according to Embodiment 1 of the present invention.

FIG. 2 is an exploded perspective view of the vehicle electric retractable outer mirror according to the first embodiment of the present invention.

FIG. 3 is a partially cutaway perspective view of the vehicle electric retractable outer mirror according to Embodiment 1 of the present invention.

4A and 4B show a slip member used in the vehicle electric retractable outer mirror according to the embodiment of the present invention, wherein FIG. 4A is a perspective view of a ring-shaped leaf spring as a slip member, and FIG. It is sectional drawing of a spring.

FIG. 5 is an enlarged sectional view of a main part of a vehicle electric retractable outer mirror according to a second embodiment of the present invention.

FIG. 6 is an exploded perspective view of a vehicle electric retractable outer mirror according to Embodiment 2 of the present invention.

FIG. 7 is a partially cutaway perspective view of a vehicle electric retractable outer mirror according to a second embodiment of the present invention.

FIG. 8 is an enlarged cross-sectional view of the two-way clutch mechanism along the line AA in FIGS. 1, 5, and 10;

FIG. 9 is an enlarged exploded perspective view of a two-way clutch mechanism.

FIG. 10 is an enlarged sectional view of a main part of a conventional electric retractable outer mirror for a vehicle.

FIG. 11 is a perspective view of a vehicle body equipped with a vehicle electric retractable outer mirror.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Body 2 ... Stand 3 '... Rotating axis 3 "... Rotating axis 3a ... Mirror mounting flange part 10 ... Outer mirror unit 50 ... Outer mirror unit 20 ... Drive part unit 31 ... Outer race 33 ... Inner race 35 ... Release member 36 ... rollers (biting members) 37 ... leaf springs (biasing members) 38 ... gaps 45 ... ring-shaped leaf springs (slip members)

Claims (3)

[Claims] A rotating shaft rotatably held by a mount fixed to a vehicle body; an outer mirror unit held by a mirror mounting flange at a tip of the rotary shaft; and a drive unit provided in the mount. A unit, a cylindrical outer race fixed in the mount coaxially with the rotation axis, an inner race held by the rotation shaft so as to rotate in the outer race, and an inner periphery of the outer race. A bite member that is displaceably provided in a gap in which an opposing interval formed by a surface and the outer peripheral surface of the inner race changes, and a bite member that is provided in the gap and is always opposed to the gap. An urging member for urging the biting member toward a narrower gap, and a urging member provided coaxially with the rotating shaft and rotating in accordance with the driving of the driving means to rotate the biting member by the urging member. Displacement against And a release member for rotating the rotating shaft after releasing the bite, so as to prevent an external force of a predetermined value or more from the outer mirror unit from being transmitted to the drive unit unit. An electrically retractable outer mirror for a vehicle, comprising a slip member provided coaxially with a rotation shaft. 2. The apparatus according to claim 1, wherein said slip member is a ring-shaped leaf spring which is located at a base end of said rotary shaft and controls the connection between said rotary shaft and said inner race by an urging force. 2. The electric retractable outer mirror for vehicles according to 1. 3. The apparatus according to claim 1, wherein the slip member is a ring-shaped leaf spring located at a tip of the rotating shaft and controlling the connection between the rotating shaft and the outer mirror unit by an urging force. 2. The electric retractable outer mirror for vehicles according to claim 1.