JP2003312365A - Vehicle rear view mirror - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle rear view mirror in which the number of spherical surface requiring management, is less and a mirror base is not floated up from a drive unit at an inclination terminal even while assembling can be relatively simply carried out. <P>SOLUTION: An approximately spherical pivot 37 is integrally formed with a casing 31 of a drive unit 3 and a pivot attachment part 22 press-fitted with the pivot 37 is provided on the mirror base 2. Thereby, the number of the spherical surface requiring the management is only two and floating up of the mirror base 2 can be prevented at the driving terminal. Since a spring member 4 is fitted to a base end part 222c of the pivot attachment part 22, it is no fear that the pivot attachment part is dropped off from the pivot 37. Further, since a shelf part 22h temporarily retaining the spring member 4 is provided at a tip end of the pivot attachment part 22, attachment of the spring member 4 is also facilitated and as a whole, the assembling can be relatively easily carried out. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle rearview mirror, and more particularly to a remote control type vehicle rearview mirror.

[0002]

10 to 11 show a conventional remote control type rearview mirror for a vehicle. The vehicle rearview mirror 100 includes a mirror base 102 for fixing a mirror via a mirror holder (not shown), and the mirror base 1.
And a drive unit 103 for adjusting the mirror surface angle of the mirror via the mirror base 102.

The mirror base 102 is provided with a mirror base body 104, a mounting portion 105 provided at a substantially central portion of the mirror base body 104, and having a spherical convex surface 105a and a spherical concave surface 105b on the back side of the spherical convex surface 105a. A pivot receiving portion 106 provided on the base body 104,
It is configured with.

On the other hand, the drive unit 103 is provided in a casing 107 and a central portion of the casing 107.
A spherical concave surface 108 that receives the spherical convex surface 105a of the mirror base 102 and tiltably supports the mirror base 102;
A drive motor (not shown) built in the casing 107, an advancing / retreating rod 110 that advances and retreats from the casing 107 by the driving motor, and a pivot receiving portion 1 of the mirror base 102 that is provided at the tip of the advancing / retreating rod 110.
A substantially spherical pivot 111 that is slidably mounted in
And are provided.

Then, the mirror base 102 is attached to the drive unit 103 via an attaching means composed of a hemispherical washer 113, a coil spring 114, and a screw 116 integrally provided with a flat washer. That is,
The elastic restoring force of the coil spring 114 interposed between the hemispherical washer 113 and the flat washer 115 allows the spherical convex surface 1 of the mirror base 102 to pass through the hemispherical washer 113.
05a is brought into pressure contact with the spherical concave surface 108 of the drive unit 102, whereby the mirror base 102 is moved to the drive unit 10.
It is attached to 3 so that it can be tilted.

[0006]

However, in such a conventional vehicle rearview mirror 100, the spherical convex surface 113a of the hemispherical washer 113 and the spherical concave surface 105b of the mirror base 102 are brought into contact with each other, and , Mirror base 102
Spherical convex surface 105a and concave spherical surface 108 of the drive unit 103
Since the mirror base 102 is attached to the drive unit 103 so as to be tiltable by abutting and, it is possible to assemble relatively easily, but the precision of the above-mentioned four spherical surfaces must be managed with high precision. I have to.

A pressure contact member (hemispherical washer 113)
1 has a structure in which the spherical convex surface 105 of the mirror base 102 is pressed against the spherical concave surface of the drive unit 103.
As shown in FIG.
May rise and the mirror surface angle of the mirror may not be accurately controlled.

The present invention has been made based on the above-mentioned conventional technique. Although the assembly is relatively easy, the number of spherical surfaces requiring management is reduced and the mirror base is driven at the end point of tilting. It is an object of the present invention to provide a vehicle rearview mirror that does not lift up from a unit.

[0009]

According to a first aspect of the invention, there is provided a vehicle rearview mirror including a mirror base for fixing a mirror and a drive unit for tilting the mirror base. The casing is provided with a substantially spherical pivot constituting the tilting fulcrum of the mirror base, while the mirror base is formed into a hat-shaped cross-section, and the pivot is press-fitted on the inner surface of the pivot to form a sliding surface with the pivot. And a structure for externally fitting a spring member to the base end of the pivot mounting part, and a shelf for temporarily holding the spring member at the tip end of the pivot mounting part. It is characterized in that a section is provided.

According to the first aspect of the present invention, the casing of the drive unit is provided with a substantially spherical pivot constituting the tilting fulcrum of the mirror base, while the pivot mounting portion into which the pivot is press-fitted is fitted to the mirror base. Since the structure is provided, the mirror base can be tilted about the pivot. At this time, two spherical surfaces need to be managed. Further, unlike the conventional structure, the spherical convex surface (spherical convex surface) is pressed against the spherical concave surface (spherical convex surface) via the pressing member, so that the mirror base can be prevented from being lifted at the end of driving.

Here, since the spring member is externally fitted to the base end portion of the pivot mounting portion, there is no fear that the pivot mounting portion will fall out of the pivot. However, according to the invention of claim 1, Since the shelf portion for temporarily holding the spring member is provided at the tip of the outer peripheral surface of the pivot mounting portion, the spring member can be easily mounted, and the structure as a whole can be relatively easily assembled.

According to the invention of claim 2, claim 1
In the rear-view mirror for a vehicle described above, the pivot includes a chamfered portion on its tip side and a small protrusion at substantially the center of the chamfered portion, and the pivot mounting portion has a small protrusion of the pivot on its tip side. It is characterized by comprising a flat portion which abuts and has a gap between the chamfered portion of the pivot.

According to the second aspect of the invention, in addition to the effect of the first aspect of the invention, the pivot is provided with a chamfered portion at its tip end side and a small projection is provided substantially at the center of the chamfered portion.
The pivot mounting portion includes a flat portion on the tip side thereof that abuts the small protrusion of the pivot and has a gap between the pivot mounting portion and the chamfered portion of the pivot, so that the mirror base has the small protrusion and the chamfered portion and the flat portion. It becomes possible to tilt by utilizing the gap between. Therefore, the vehicle rearview mirror can be made thinner along the pivot axis direction.

According to a third aspect of the present invention, in the vehicle rearview mirror according to the first and second aspects, a plurality of slits are provided at a base end portion of the pivot mounting portion. is there.

According to the invention of claim 3, claim 1,
In addition to the effect of the invention described in 2, since a plurality of slits are provided at the base end portion of the pivot mounting portion, it is possible to reduce the pressure input required for press-fitting the pivot into the pivot mounting portion.

According to the invention of claim 4, claim 1
In the rear-view mirror for a vehicle according to any one of items 1 to 3, a press-fitting guide surface is formed on an inner peripheral surface of a base end portion of the pivot mounting portion, the press-fitting guide surface being formed so as to have a diameter gradually increasing toward a peripheral edge. It is characterized by that.

According to the invention described in claim 4,
In addition to the effect of the invention described in 3, since the press-fitting guide surface is provided on the inner peripheral surface of the base end portion of the pivot mounting portion, the press-fitting fitting of the pivot to the pivot mounting portion can be easily performed even by blind work.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described in detail below with reference to the drawings. 1 to 9 show an embodiment of a vehicle rearview mirror of the present invention. FIG. 1 is an exploded perspective view of the vehicle rearview mirror of this embodiment, and FIG. 2 is a view of the vehicle rearview mirror. FIG. 3 is a bottom view including a broken portion, FIG. 3 is a bottom view showing a tilted state of a mirror base of the vehicle rearview mirror, and FIG. 4 is a bottom view showing a tilted state of a mirror base of the vehicle rearview mirror. 5 is a view showing a pivot mounting portion of a mirror base of the rear-view mirror for the vehicle, and FIGS. 6 to 9 are explanatory views of an assembling process of the mirror base and the drive unit of the rear-view mirror for the vehicle. 8 and 9
The middle mirror base is not shown.

In this embodiment, a vehicle rearview mirror on the left side of the vehicle is shown and described. The vehicle rear-view mirror 1 of this embodiment
Includes a mirror (not shown), a mirror holder (not shown) that holds the mirror, a mirror base 2 that fixes the mirror via the mirror holder, a drive unit 3, and a spring member 4. ing.

The drive unit 3 includes a pair of split cases 31.
A casing 31 configured by combining a and 31b
A drive motor (not shown) for tilting up and down and a drive motor for tilting left and right, which is built in the casing 31, and an advancing and retracting rod 34 for tilting up and down that moves back and forth from the casing 31 by the drive motor for tilting up and down. And a forward / backward moving rod 35 for leftward / rightward tilting which moves forward / backward from the casing 31 by a drive motor for leftward / rightward tilting.

The forward / backward rods 34, 35 are constructed as pivots 34b, 35b having substantially spherical tip ends, and are rotatably mounted in pivot receiving portions 23, 24 of the mirror base 2 which will be described later. There is.

The casing 31 of the drive unit 3
From the center of the casing 31 to the pivot shaft 36
A substantially spherical pivot 37 is formed so as to integrally project through the. The pivot 37 is press-fitted into the pivot mounting portion 22 of the mirror base 2 which will be described later.
The mirror base 2 can be tilted about the tilting fulcrum 7.

On the other hand, the mirror base 2 is composed of a mirror base body 21 and a hat 37 having a substantially hat-shaped cross section formed at a substantially central portion of the mirror base body 21, and the pivot 37 is press fitted into the inner surface of the mirror base body 21. And a pivot mounting portion 22 having a ball seat surface 22a forming a sliding surface.

On the mirror base body 21, a pivot 34b of an advancing / retreating rod 34 for driving the drive unit 3 in the left-right direction.
Is provided with a pivot receiving portion 23, and a pivot receiving portion 24 is provided which is engaged with a pivot 35b of a forward / backward moving rod 35 for vertically driving. In addition, in the mirror base 2 of this embodiment, the pivot receiver for left-right driving is also provided on the opposite side of the pivot receiving portion 23 across the pivot mounting portion 22 so as to be shared by the left and right rear-view mirrors for vehicles. A section 25 is provided so that it can be combined with the right drive unit.

Further, the mirror base body 21 of the mirror base 2 is provided with openings 26, 26 having guide shafts 26b, 26b on both sides of the pivot mounting portion 22 and facing the drive unit. Casing 3
1 is provided with a pair of U-shaped guide portions 38, 38 for slidably holding the pair of guide shafts 26b, 26b. The guide shafts 26b, 26b and the guide portions 38, 3 are provided.
The engagement with the mirror base 2 prevents the mirror base 2 from rotating about the axial direction of the pivot shaft 16.

Here, the pivot 37 of this embodiment is
A chamfered portion 37b is formed by cutting out a quadrant thereof, and a small hemispherical small projection 3 is formed at the center of the chamfered portion 37b.
7c is provided. The pivot 37 of this embodiment is formed in a hollow shape, and a rib 37d extending radially from the center is formed inside the pivot 37. On the other hand, in the pivot mounting portion 22 for mounting the pivot 37, the tip end side thereof is a small projection 37c of the pivot 37.
And a chamfered portion 37b of the pivot 37 and a gap S between the chamfered portion 37b and the flat portion 22b.
Therefore, the mirror base 2 can be tilted by utilizing the gap S. When the drive motor for tilting left and right is operated to move the rod 34 for tilting left and right forward and backward, the mirror base 2 is mirrored. When the mirror surface of is tilted in the left-right direction (see FIGS. 3 to 4) and the up-down tilt drive motor is actuated to move the up-down tilt advancing / retracting rod 35 back and forth, the mirror tilts in the up-down direction via the mirror base 2. It is supposed to do.

The pivot mounting portion 22 of this embodiment is also used.
In that case, the inner peripheral surface of the pivot insertion end portion 22c as the "proximal end portion of the pivot mounting portion" is provided with the press-fitting guide surface 22e that is formed so as to gradually increase in diameter toward the peripheral edge, The press-fitting guide surface 22e guides the press-fitting of the pivot 37. Also, four slits 22d are formed in the pivot insertion end 22c along the axial direction of the pivot shaft 36.
The slit 22d reduces the press-fitting force required for press-fitting the pivot 23 into the pivot mounting portion 22. Since the pivot mounting portion 22 of this embodiment is configured such that the pivot 37 is press-fitted, the pivot mounting portion 22 has a diameter smaller than the maximum diameter of the pivot 37 on the side of the sliding surface 22a on the pivot insertion end 22c side. A constricted portion 22f is formed.

A spring member 4 is fitted on the outer peripheral surface of the pivot insertion end 22c to prevent the mirror base 2 from falling off the pivot 37 due to an unexpectedly large impact. The spring member 4 is made of metal and is formed of a ring-shaped wire having free ends 4c and 4c which can be expanded and deformed with the closed end 4b as a fulcrum. The spring member 4 also has the effect of making the sliding torque between the pivot 37 and the pivot mounting portion 22 constant.

In order to facilitate the external fitting work of the spring member 4, in this embodiment, the spring member 4 is slightly pushed out from the original shape on the outer peripheral surface of the tip end portion of the pivot mounting portion 22. A shelf portion 22h capable of temporarily holding the spring member 4 is provided.

The vehicle rearview mirror thus constructed is assembled as follows (see FIGS. 6 to 9).

First, using a dedicated jig, as shown in FIG. 6, the pivot insertion end 22c of the pivot mounting portion 22 of the mirror base 2 is made to face the pivot 37 of the drive unit 3 and the advancing / retreating rods 34, 35 are moved. Pivot 34b,
The pivot receiving portions 23 and 24 are opposed to 35b.

Next, as shown in FIG. 7, the pivot 37 is press-fitted into the pivot mounting portion 22, and the pivot 3 of the advancing / retreating rods 34, 35 is fitted in the pivot receiving portions 23, 24.
4b and 35b are press fitted. At this time, the press-fitting guide surface 22e of the pivot insertion end 22c guides the press-fitting of the pivot 37 even in a blind operation.

Then, from this state, as shown in FIG. 8, the spring member 4 is fitted into the shelf portion 22h provided on the outer peripheral surface of the tip end portion of the pivot mounting portion 22, and the spring member 4 is temporarily held on the shelf portion 22h. Let

Next, the temporarily held spring member 4 is pushed over by the press-fitting jig over the locking projection 22g and press-fitted into the base end 22c of the pivot mounting portion 22, as shown in FIG. The assembly is completed with the spring member 4 externally fitted.

According to the rear-view mirror 1 for a vehicle of such an embodiment, a substantially spherical pivot 37 is provided integrally with the casing 31 of the drive unit 3, and the pivot 37 is provided on the mirror base 2.
Since the structure is provided with the pivot mounting portion 22 into which is press-fitted, only two spherical surfaces need to be managed. Further, unlike the conventional structure, the spherical convex surface (spherical concave surface) is pressed against the spherical concave surface (spherical convex surface) through the pressing member, so that the mirror base 2 can be prevented from being lifted up at the end of driving (see FIGS. 3 to 4). .

Further, the base end portion 22 of the pivot mounting portion 22
Since the spring member 4 is externally fitted to c, the pivot mounting portion 22 does not fall off from the pivot 37. However, the temporary holding of the spring member 4 on the shelf portion 22h causes the spring member 4 to be press-fitted. Facilitates.

That is, the drive unit 3 and the mirror base 2
When mounting, the mounting is completed by simply pressing the mirror base 2 toward the drive unit 3 after positioning at a predetermined mounting position, and when mounting the spring member 4, Since the mounting is completed simply by pressing the spring member 4 toward the base end 22c of the pivot mounting portion 22 after temporarily holding it on the shelf 22h, the assembly can be easily automated.

Further, at this time, unlike the manual press-fitting, the spring member 4 is not locked at the wrong position due to insufficient press-fitting, which contributes to the quality improvement.

Further, according to the vehicle rearview mirror 1 of this embodiment, the pivot 37 is provided with the chamfered portion 37b, and the chamfered portion 37b is provided with the small protrusion 37c substantially at the center thereof. , The small projection 37c and the chamfer 3
Since the flat portion 22b having the clearance S between the mirror base 7 and the vehicle 7b is provided, the mirror base 2 can be tilted using the clearance S while the vehicle rearview mirror 1 is thinned along the axial direction of the pivot shaft 36. Become.

Further, according to the vehicle rearview mirror 1 of this embodiment, the pivot insertion end portion 2c is attached to the pivot insertion end portion 2c.
2c has a plurality of slits 22d, so that the pivot 3
At the time of press-fitting 7, the pivot insertion end portion 22c is expanded and deformed, and the press-fitting force required for press-fitting the pivot 37 into the pivot mounting portion 22 can be reduced.

Further, according to the vehicle rearview mirror 1 of this embodiment, since the press-fitting guide surface 22e for guiding the press-fitting of the pivot 37 is provided at the pivot insertion end 22c of the pivot mounting portion 22, it is a blind work. Also, the pivot 37 can be easily press-fitted into the pivot mounting portion 22.

[0042]

According to the first aspect of the present invention, the casing of the drive unit is provided with a substantially spherical pivot constituting the tilting fulcrum of the mirror housing, and the pivot mounting portion into which the pivot is press-fitted is mounted on the mirror base. Since the structure is provided, only two spherical surfaces need to be managed. Also, unlike the conventional structure, the spherical convex surface (spherical convex surface) is pressed against the spherical concave surface (spherical convex surface) via the pressing member, so that the mirror base can be prevented from being lifted at the end of driving, and the mirror surface can be controlled even at the end of driving. Can be done accurately.

Here, since the spring member is externally fitted to the base end portion of the pivot mounting portion, there is no fear that the pivot mounting portion will fall out of the pivot, but according to the invention of claim 1. For example, since the shelf portion for temporarily holding the spring member is provided at the tip of the outer peripheral surface of the pivot mounting portion, the spring member can be easily mounted, and the structure as a whole can be relatively easily assembled.

Further, since the spring member is temporarily held by the shelves, the structure is such that it can be easily press-fitted by the jig. This allows press-fitting work with sufficient press input, and the spring member is locked at an incorrect position. This will not happen and will contribute to quality improvement.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a vehicle rearview mirror of this embodiment.

FIG. 2 is an assembly view including a breakage portion of the vehicle rearview mirror.

FIG. 3 is a diagram showing a tilted state of a mirror base of the vehicle rearview mirror.

FIG. 4 is a diagram showing a tilted state of a mirror base of the vehicle rearview mirror.

FIG. 5 is a view showing a pivot mounting portion of a mirror base of the rear-view mirror for a vehicle, in which FIG. 5a is a front view, FIG. 5b is a bottom view including a partially broken portion, and FIG. .

FIG. 6 is an explanatory diagram of an assembling process of the mirror base and the drive unit of the rear-view mirror for a vehicle, showing a state before mounting the mirror base.

FIG. 7 is an explanatory diagram of an assembling process of the mirror base and the drive unit of the rear-view mirror for the vehicle, showing a state after mounting the mirror base.

FIG. 8 is an explanatory view of an assembling process of the mirror base and the drive unit of the vehicle rearview mirror, showing a temporary holding state of the spring member.

FIG. 9 is an explanatory diagram of an assembling process of the mirror base and the drive unit of the vehicle rearview mirror, showing a mounted state of a spring member.

FIG. 10 is a diagram showing a conventional rearview mirror for a vehicle.

11 is an exploded view showing a main part of the vehicle rearview mirror of FIG.

[Explanation of symbols]

1 Rear view mirror for vehicle 2 mirror base 3 drive unit 22 Pivot mounting part 22a Ball seat surface 22b Flat part 22c Pivot insertion end (base end of pivot mounting part) 22d slit 22e Press-fitting guide surface 22h shelf 31 casing 37 pivot 37b Chamfer 37c Small protrusion S gap

Claims (4)

[Claims] 1. A rear-view mirror for a vehicle, comprising: a mirror base for fixing a mirror; and a drive unit for tilting the mirror base, wherein the casing of the drive unit has a substantially spherical shape that constitutes a tilt fulcrum of the mirror base. While the pivot is provided, the mirror base is provided with a ball seating surface which is formed in a hat-shaped cross section and has the inner surface on which the pivot is press-fitted to form a sliding surface with the pivot. A rear-view mirror for a vehicle having a structure in which a spring member is externally fitted to a base end portion of a pivot mounting portion, and a shelf portion for temporarily holding the spring member is provided at a tip end portion of the pivot mounting portion. 2. The vehicle rearview mirror according to claim 1, wherein the pivot is provided with a chamfered portion at a tip end side thereof, and a small protrusion is provided substantially at a center of the chamfered portion, and the pivot mounting portion is provided with: A rear-view mirror for a vehicle, comprising a flat portion which is in contact with a small protrusion of the pivot and has a gap between the chamfered portion of the pivot and a tip end thereof. 3. The vehicle rearview mirror according to claim 1, wherein a plurality of slits are provided at a base end portion of the pivot mounting portion. 4. The vehicle rearview mirror according to claim 1, wherein the inner peripheral surface of the base end portion of the pivot mounting portion is formed to have a diameter gradually increasing toward a peripheral edge thereof. A rear-view mirror for a vehicle having a press-fitting guide surface for guiding the press-fitting.