JP2000318522A - Door mirror device for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent whistling sound from being generated by blocking a clearance between a mirror base and a door mirror body. SOLUTION: A circular projecting part 26 is formed on the surface of a door mirror body, facing a mirror base 7 around a shaft 14 as a rotational center of the door mirror body, and a recessed part 27 into which the projection part is to be inserted is formed on the surface of the mirror base 7 side facing the projection part 26. A clearance between the mirror base 7 and the door mirror body is blocked by the projection part 26, the high-speed air flow will not be generated in the clearance, and therefore, whistling sound is not generated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile door mirror device mounted on an automobile front door.

[0002]

2. Description of the Related Art Conventionally, as a door mirror device of this kind, for example, a structure shown in FIG. 6 is known. That is,
A mirror base 2 projecting horizontally outward is integrally formed on a triangular outer garnish 1 made of resin or the like, and a door mirror body 4 is rotatably attached to the mirror base 2 via a shaft 3. Shaft 3
Acts as the center of rotation of the door mirror body 4. That is, when the door mirror has the electric storage structure, the door mirror main body 4 is turned around the shaft 3 to the storage position or the use position by driving the electric driving unit built in the door mirror main body 4. In such a structure, a gap S is provided between the mirror base 2 and the door mirror body 4.
(Approximately 1 mm), there is a problem that high-speed air flows through the gap S during traveling and generates wind noise. Conventionally, in order to solve such a problem, a structure in which the gap S is closed by an elastic seal member has been proposed (Japanese Patent Laid-Open No. 5-162).
588).

[0003]

In the structure disclosed in the above publication, a seal member for filling a gap between the mirror base and the door mirror body is formed in a linear shape on opposing surfaces. The seal member is formed by discharging a liquid urethane resin from a nozzle and applying the urethane resin to the surface. In such a method, a step of applying a seal member is required before assembling the door mirror body to the mirror base, and there is a problem that the number of working steps increases. Further, when the linear sealing member formed by coating is thicker than a set value, frictional resistance occurs when the door mirror body rotates, and when it is thin, the gap cannot be filled, and the There is a problem that the function cannot be performed.

The present invention has been made in view of such circumstances, and has no influence on the rotation of the door mirror body.
An object of the present invention is to provide a door mirror device for an automobile which can obtain a function of reliably preventing wind noise.

[0005]

Means for Solving the Problems The present invention (claim 1) provides:
A mirror base protruding and fixed horizontally to the outside of the automobile front door, a shaft formed on the mirror base in an upward vertical direction, and a door mirror body rotatably mounted on the shaft. In the automotive door mirror device provided, on the surface of the door mirror body facing the mirror base, a convex portion formed in a circle around the shaft, and formed on the surface of the mirror base facing the convex portion, A circular concave portion into which the convex portion enters, and the convex portion closes a gap between the mirror base and the door mirror body. According to this configuration, the convex portion of the door mirror body enters the concave portion of the mirror base, whereby most of the gap S is closed, and the generation of wind noise is prevented.

In the present invention (claim 2), the door mirror main body has a bracket which is rotatably fitted to the shaft and to which a mirror electric drive unit is attached, and wherein the projection is integrated with the bracket. It is formed. With such a configuration, it is not necessary to form the convex portion as a separate component, and the number of components and work steps do not increase.

In the present invention (claim 3), the mirror base comprises a base plate formed of a shaft, a circular base formed around the shaft and a lower portion thereof, and a mirror base body for fixing the base plate. The recess is configured as a gap between the mirror base and the base of the base plate. In such a configuration, by fixing the base plate to the mirror base body, a concave portion is formed between the two.

The present invention (Claim 4) provides a mirror base protruding and fixed to the outside of a front door of an automobile in a horizontal direction, a shaft formed on the mirror base in an upwardly vertical direction, and a turn around the shaft. A door mirror device for an automobile, comprising: a door mirror body movably mounted; a concave portion having a circular shape centered on the shaft; and a mirror facing the concave portion, on a surface of the door mirror body facing the mirror base. A circular convex portion formed on the surface of the base and penetrating into the concave portion, the convex portion closing a gap between the mirror base and the door mirror body. According to this configuration, the convex portion of the mirror base enters the concave portion of the door mirror body, whereby most of the gap S is closed, and the generation of wind noise is prevented.

In the present invention (claim 5), the door mirror body has a bracket which is rotatably fitted to the shaft and to which a mirror electric drive unit is attached, and the recess is formed integrally with the bracket. It has been done. With such a configuration, it is not necessary to form the recess as a separate component, and the number of components and the number of working steps do not increase.

In the present invention (claim 6), the mirror base comprises a base plate formed of a shaft and a base formed below the shaft, and a mirror base body for fixing the base plate. , Formed on the base of the base plate.
In such a configuration, by fixing the base plate to the mirror base main body, a convex portion facing the concave portion formed in the door mirror main body is formed.

In the present invention (claim 7), the mirror base includes a base plate composed of a shaft and a circular base formed around the shaft at a lower portion thereof, and a mirror base body for fixing the base plate. And the protrusion is formed on the mirror base body. In such a configuration, by fixing the base plate to the mirror base body and attaching the door mirror body to the shaft, the projection of the mirror base body is positioned relative to the recess formed in the door mirror body.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIGS. 1 and 2, reference numeral 6 denotes an outer garnish described above, which is mounted in a triangular area between a lower window frame of an automobile front door and a front pillar.
Is a mirror base fixed to the outer garnish 6 so as to protrude outward in the horizontal direction, and is formed integrally with the outer garnish 6 with resin or the like. 8 is an outer panel to which an outer garnish is attached, 9
Is an elastic sheet disposed between the outer garnish 6 and the outer panel 8, and serves to seal between the outer panel 8 and the outer garnish 6. Reference numeral 10 denotes an inner panel, and bolts 11 embedded in the mirror base 7 are fixed by nuts 12. 13 is bolt 1
Inner garnish covering 1 and nut 12 portions.

Reference numeral 14 denotes a shaft formed on the outer portion of the mirror base 7 in the upward vertical direction, and is integrally formed of metal together with a disk-shaped base 15. The shaft 14 and the base 15 constitute a base plate 16. The mirror base 7 includes a base plate 16 and a mirror base body 18. The base plate 16 is fixed to a mirror base body 18 with screws 17. Reference numeral 19 denotes a door mirror body rotatably mounted on the shaft 14, and a resin bracket 20 fitted on the shaft 14, an electric drive unit 21 fixed to the bracket 20, a mirror, and a mirror that tilts up, down, left, and right. It consists of a tilting drive unit for driving and a mirror housing for housing these. The electric drive unit 21 shows some parts such as a main gear 22, a clutch 23, and a spring 24 in the figure.
In addition, it is composed of a group of reduction gears, motors, and the like that mesh with the main gear, and the structure is known. Reference numeral 25 denotes a cord extending from the inside of the vehicle to the electric drive unit through a hole in the shaft 14 and the space in the mirror base 7, and supplies power for driving the electric drive unit. At the time of electric driving, the bracket 20 rotates about the shaft 14, and thus the door mirror body 19 rotates.

Reference numeral 26 denotes a circular shape centering on the shaft 14 on the surface of the door mirror body 19 facing the mirror base 7.
Specifically, the bracket 20 is formed by a convex portion formed in a ring shape.
Are integrally formed. Numeral 27 denotes a concave portion formed of a circular, specifically, annular groove formed on the surface of the mirror base 7 facing the convex portion 26, and the convex portion 26 enters the concave portion.
The recess 27 is provided between the mirror base body 18 and the base plate 1.
6 is formed. That is, the diameter of the circular concave portion 27 at the portion where the base plate 16 of the mirror base main body 18 is attached is determined by the base plate base 15.
By setting the diameter larger than the diameter of the circular portion, the concave portion 27 is formed between the two at the time of assembly. Convex part 26
As an example of the dimensions of the concave portion 27 and the convex portion 26, the convex portion 26 has a height of 6 mm, a width of 1.5 mm, and a diameter of a circle outside the convex portion 26 is 4 mm.
3 mm, the recess 27 has a depth of 6 mm and a width of 2.5 m.
m, the diameter of the circle outside the recess 27 can be 44 mm. The gap between the base plate base 15 and the bracket 20 is about 1 mm.

Reference numeral 28 denotes a protrusion formed on the base plate base 15, and reference numeral 29 denotes a corresponding groove formed on the bracket 20 side, which is formed in an arc shape centering on the shaft 14. The projection 28 enters the groove 29 and functions to regulate the rotation angle of the bracket 20 with respect to the base plate 16, that is, the mirror base 7, within a certain range. That is, when the projection 28 contacts one end of the groove 29, the door mirror main body 19 is in the retracted position, and when the protrusion 28 contacts the other end of the groove 29, the door mirror main body 19 is in the use position.

In the above embodiment, the case where the circular convex portion 26 and the concave portion 27 are formed in a ring shape has been described.
As shown in FIG. 7, the convex portion 30 may be formed in a disk shape, and the concave portion 31 may be formed as a circular concave portion into which the convex portion 30 enters. The circular concave portion 31 can be formed by fixing the disk-shaped base plate base 15 having the same diameter as the convex portion 30 together with the base plate at a position one step lower than the upper surface of the mirror base body 18. With such a structure, the space in the bracket 20 can be widened, and the degree of freedom of the arrangement position of the components constituting the electric drive unit 21 can be increased.

FIG. 4 shows another embodiment. On the surface of the mirror base body 18, that is, on the surface of the base plate base 15 of the mirror base 7, the shaft is centered around the shaft 14, specifically, in a ring shape. A convex portion 32 is formed, and a circular shape,
Specifically, an annular recess 33 is formed. In this configuration, when the base plate 16 is fixed to the mirror base main body 18 with the screws 17 and the bracket 20 is fitted on the shaft 14, the protrusions 3 of the base plate 16 are formed.
2 enters the concave portion 33 of the bracket 20 and closes the gap between the mirror base 7 and the door mirror body 19. With this configuration, the protrusion 3 is formed on the base 15 integrated with the shaft 14.
Since 2 is formed, an error in the position between the bracket 20 and the bracket 20 fitted on the shaft 14 is unlikely to occur, and the accuracy of the positions of the convex portions 32 and the concave portions 33 is increased.

FIG. 5 shows a modification of the above embodiment, in which the projection 34 on the mirror base 7 side is replaced with the base plate base 15.
Instead, it is formed on the mirror base main body 18 side and enters into the concave portion 33 on the bracket 20 side.
With this configuration, the same function as described above can be obtained.
With such a configuration, the base portion 15 of the base plate 16 can be formed into a disk shape having a small diameter, so that the base plate 16 which is usually made of metal and is heavy can be reduced in weight.

In the above embodiment, the protrusion 26
Has been described as a closed circle, but instead, it may be formed in an arc shape in which the convex portion 26 is arranged to be located forward when the door mirror is used, and the circular convex portion is also included in the circular shape. In the above embodiment, the electric retractable door mirror has been described, but the present invention can be applied to a manually retractable door mirror.

[0020]

According to the present invention (claim 1), most of the gap between the upper surface of the mirror base and the lower surface of the door mirror main body is closed by the convex portion formed on the door mirror main body side,
During traveling, there is no possibility that a high-speed air flow will occur here, and the generation of wind noise will be prevented. According to the present invention,
Since the convex portion and the concave portion can be both non-contact,
There is no contact resistance as seen in conventional sealing members,
There is no possibility that the load on the motor of the electric drive unit increases.
In addition, there is no problem that a wind noise is generated due to non-contact of the seal member in the conventional example.

Further, according to the present invention (claim 2), since the projection is formed integrally with the bracket, it is not necessary to form the projection as a separate part. Therefore, the number of parts and work processes do not increase, and the quality can be improved while maintaining the cost and productivity.

According to the present invention (claim 3), the diameter of the circular concave portion of the mirror base main body at the portion where the base plate is mounted is set to be larger than the circular diameter of the base plate base, so that the distance between the two during assembly can be reduced. A recess can be formed. Therefore, it is not necessary to independently form a concave portion into which the convex portion enters the mirror base body or the base plate, and the structure of the component does not become complicated.

According to the present invention (claim 4), most of the gap between the upper surface of the mirror base and the lower surface of the door mirror main body is closed by a convex portion formed on the mirror base side.
During traveling, there is no possibility that a high-speed air flow will occur here, and the generation of wind noise will be prevented.

Further, according to the present invention (claim 5), since the recess is formed in the bracket, it is not necessary to form this recess as a separate part. Therefore, the number of parts and work processes do not increase, and the quality can be improved while maintaining the cost and productivity.

Further, according to the present invention (claim 6), the convex portion of the base plate and the concave portion of the bracket can be positioned with high accuracy.

Further, according to the present invention (claim 7), the base of the base plate which is formed of metal and which is heavy by itself can be reduced in size, so that the weight of the base plate can be reduced.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a main part of an automobile door mirror device according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a cross-sectional view of a main part of an automobile door mirror device according to a modification of the embodiment.

FIG. 4 is a sectional view of a main part of an automobile door mirror device according to another embodiment of the present invention.

FIG. 5 is a cross-sectional view of a main part of an automobile door mirror device according to a modification of the above embodiment.

FIG. 6 is a front view of a conventional door mirror device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outer garnish 2 Mirror base 3 Shaft 4 and 19 Door mirror main body 7 Mirror base 8 Outer panel 9 Elastic sheet 10 Inner panel 11 Bolt 12 Nut 13 Inner garnish 14 Shaft 15 Base 16 Base plate 17 Screw 18 Mirror base main body 20 Bracket 21 Electric drive unit 25 code 26,30,32,34 convex part 27,31,23 concave part

Claims (7)

[Claims] 1. A mirror base protruding and fixed to the outside of an automobile front door in a horizontal direction, a shaft formed on the mirror base in an upward vertical direction, and rotatably mounted on the shaft. A door mirror device for an automobile, comprising: a door mirror body comprising: a surface of the door mirror body facing the mirror base; a projection formed in a circular shape around the shaft; and a surface of the mirror base facing the projection. Formed in the
An automobile door mirror device, comprising: a circular concave portion into which the convex portion enters, wherein the convex portion closes a gap between the mirror base and the door mirror body. 2. The door mirror main body has a bracket which is rotatably fitted to the shaft and to which a mirror electric drive unit is attached, and wherein the projection is formed integrally with the bracket. The automobile door mirror device according to claim 1. 3. The mirror base comprises a base plate formed of a shaft and a circular base formed at the lower portion of the shaft, and a mirror base body for fixing the base plate. 3. A structure as a gap between a base and the base of the base plate.
An automotive door mirror device as described in the above. 4. A mirror base protruding and fixed to the outside of a front door of an automobile in a horizontal direction, a shaft formed on the mirror base in an upward vertical direction, and a door mirror rotatably mounted on the shaft. A door mirror device for an automobile including a main body, a concave portion formed in a circular shape around the shaft on a surface of the door mirror main body facing the mirror base, and a concave portion formed on a surface of the mirror base facing the concave portion. ,
An automobile door mirror device, comprising: a circular convex portion that enters the concave portion, wherein the convex portion closes a gap between the mirror base and the door mirror body. 5. The door mirror body has a bracket which is rotatably fitted to the shaft and to which a mirror electric drive unit is attached, and wherein the recess is formed integrally with the bracket. The vehicle door mirror device according to claim 4. 6. The mirror base includes a base plate formed of a shaft and a circular base formed around the shaft at a lower portion of the shaft, and a mirror base main body for fixing the base plate. The vehicle door mirror device according to claim 4 or 5, wherein the door mirror device is formed on a base of a base plate. 7. The mirror base includes a base plate formed of a shaft and a circular base formed around the shaft at a lower portion thereof, and a mirror base body for fixing the base plate. The vehicle door mirror device according to claim 4 or 5, wherein the door mirror device is formed on a mirror base body.