JP2015074269A - Door mirror device for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door mirror device for automobile which can prevent freezing of water entered into a clearance between a base and a housing.SOLUTION: A door mirror device for automobile includes a base 11 provided on a side face of the automobile, a shaft 12 provided upright on the base 11, and a housing 14 which is rotatably attached to the shaft 12 and in which a rear-view mirror is provided, in which a clearance S for avoidance of contact of the housing 14 with the base 11 during rotation of the housing 14 is provided between the base 11 and the housing 14. The clearance S is so formed that a front and a rear part are narrow and a central part is wide along a vehicle body longitudinal direction, a lower part of the clearance S is opened, and a width of the clearance at the central part thereof is set to a degree such that entered water remains in the clearance by a surface tension.

Description

  The present invention relates to an automotive door mirror device, and more particularly to an automotive door mirror device having an anti-freezing function.

  In general, an automobile door mirror device is attached to the left and right front doors of an automobile. Such an automobile door mirror device includes a base provided on a side surface of a vehicle body, a shaft erected on the base, and a housing that is rotatably attached to the shaft and provided with a mirror that reflects the rear. .

  By the way, a notch is formed in the lower portion of the housing on the side close to the vehicle body, and the tip of the base is disposed in this notch. A shaft is erected at the tip of the base, and a shaft support portion having an insertion hole is provided inside the housing. Then, the housing can be rotatably attached to the base by inserting the shaft into the insertion hole of the shaft support portion.

  In the notch, the housing is formed with a concave cylindrical surface centered on the shaft, and the tip of the base is formed with a convex cylindrical surface centered on the shaft, so that the housing can be smoothly rotated. In addition, a slight gap is provided between the respective cylindrical surfaces.

  However, when such a gap is provided, there is a drawback that wind (running wind) enters the gap during vehicle travel and wind noise is likely to occur.

  Therefore, a car door mirror device has been proposed in which ribs and vertical walls are provided behind the gap along the flow of wind, thereby reducing the flow velocity of the wind passing through the gap and suppressing the generation of wind noise. (For example, refer to Patent Document 1 and Patent Document 2).

JP 2012-1312238 A JP 2009-241618 A

  However, in the above prior art, when water such as rain enters the gap, there is a problem that the water in the gap freezes on a cold day such as winter and cannot be moved immediately even if an automobile is used. In other words, the water that has entered the gap between the base and the housing with the door mirror retracted during parking is not naturally discharged, and therefore freezes in the gap if the outside air temperature is low.

  If water freezes in the gap between the base and the housing, in the case of an electric door mirror, the door mirror can not be returned to the electric state of use electrically, it must be removed from the car and returned manually, which is very troublesome .

  The subject of this invention is providing the door mirror apparatus for motor vehicles which can prevent that the water which entered into the clearance gap between a base and a housing freezes.

  In order to solve the above-described problems, the present invention provides a housing provided with a base provided on a side surface of a vehicle body, a shaft erected on the base, and a mirror that is rotatably attached to the shaft and reflects the rear. A gap is provided between the base and the housing to prevent the housing from contacting the base when the housing is rotated. Along the vehicle body longitudinal direction, the front and rear portions are narrow, the central portion is formed wide, and the lower portion of the gap is opened. The width of the gap in the central portion is determined by the surface tension of the water that has entered the gap. It is characterized by being set so as not to be delayed.

  According to the above configuration, the lower part of the gap formed between the base and the housing is opened, and the size of the gap is set so that the water that has entered the gap does not stagnate due to the surface tension. Even if water enters the gap, the water is easily discharged from the lower part of the gap, and the water does not stay in the gap. As a result, it is possible to prevent water from freezing in the gap.

  ADVANTAGE OF THE INVENTION According to this invention, it can prevent that the water which entered into the clearance gap between a base and a housing freezes.

It is a front view of the door mirror device for cars. It is a top view of the door mirror device for vehicles. It is a front view of a gusset board for fixing a door mirror device for cars to a front door. Example 1 is shown, and is a cross-sectional view taken along line SA-SA in FIG. 2. It is an enlarged view of the A section of FIG. FIG. 2 is a cross-sectional view taken along line SB-SB of FIG. 1, showing Example 1. It is an enlarged view of the B section of FIG. Example 2 is shown, and is a sectional view taken along line SA-SA in FIG. It is an enlarged view of the C section of FIG. Example 2 is shown, and is a cross-sectional view taken along line SB-SB in FIG. 1. It is an enlarged view of the D section of FIG. FIG. 9 is a main part enlarged view of a cross section taken along the line SA-SA in FIG. 2, showing Example 3; FIG. 7 is a main part enlarged view of a cross section taken along line SB-SB in FIG. 1, showing Example 3; It is an enlarged view of the E section of FIG. It is an enlarged view of the F section of FIG. It is an enlarged view of the G section of FIG. Example 4 is shown and corresponds to FIG. Example 4 is shown, corresponding to FIG. 15. Example 4 is shown and corresponds to FIG.

  Embodiments of the present invention will be described below with reference to the drawings.

  1 and 2 show an automobile door mirror device according to the present invention. FIG. 1 is a front view thereof, and FIG. 2 is a plan view thereof.

  A vehicle door mirror device 10 according to the present invention includes a base 11 provided on a side surface of a vehicle body, a shaft 12 (see FIG. 4) erected on the base 11, and a shaft 12 that is rotatably attached to the rear side. And a housing 14 provided with a mirror 13.

  FIG. 3 is a front view of a gusset plate 15 for fixing the automobile door mirror device 10 to a front door (not shown) of the automobile. The gusset plate 15 is disposed at the front corners of the left and right front side glasses, and is attached to a door glass frame (not shown). A base 11 of the automobile door mirror device 10 is fixed to the lower side surface of the gusset plate 15.

Example 1
4 to 7 show the first embodiment, FIG. 4 is a cross-sectional view taken along the line SA-SA in FIG. 2, FIG. 5 is an enlarged view of part A in FIG. 4, and FIG. FIG. 7 is a cross-sectional view taken along the line SB, and FIG. 7 is an enlarged view of a portion B in FIG.

  As shown in FIG. 4, a base 11 fixed to a gusset plate 15 (see FIG. 3) is provided so as to protrude laterally from the side surface of the vehicle body, and a shaft 12 stands upward on the upper surface of the base 11. It is installed. The shaft 12 is firmly fixed to the base 11. The base 11, the shaft 12, and the gusset plate 15 are made of synthetic resin.

  The housing 14 has a hollow box shape and is provided on the distal end side of the base 11. A shaft support portion 16 is provided inside the housing 14, and the shaft 12 is inserted through the insertion hole 17 of the shaft support portion 16.

  The inner surface of the insertion hole 17 of the shaft support portion 16 has a cylindrical shape, but the outer surface of the shaft 12 gradually decreases in outer diameter from the lower portion to the upper portion, and has a tapered shape. Then, the shaft 12 is inserted through the insertion hole 17 of the shaft support portion 16, and the housing 14 is rotatable about the shaft 12.

  Although not shown, a rotation mechanism is provided inside the housing 14 for rotating the housing 14 about the shaft 12 to place the automobile door mirror device 10 in a retracted state or in a used state.

  In the housing 14, a notch 20 (see also FIG. 1) is formed in the lower part on the side close to the vehicle body, and the housing receiving part 21 of the base 11 is located in the notch 20.

  As shown in FIGS. 6 and 7, the housing 14 is formed with a concave cylindrical surface 22 at the notch 20. The concave cylindrical surface 22 forms a part of a cylinder centering on the central axis of the shaft 12. On the other hand, a convex cylindrical surface 23 is formed at the tip of the housing receiving portion 21 of the base 11. The convex cylindrical surface 23 also forms a part of a cylinder centering on the central axis of the shaft 12. The concave cylindrical surface 22 and the convex cylindrical surface 23 are arranged to face each other.

  In this embodiment, a recess 23 </ b> A is formed in the convex cylindrical surface 23 of the base 11. The depth of the recess 23A (depth from the cylindrical surface 23) is constant at all positions. In this embodiment, a gap is provided between the convex cylindrical surface 23 of the base 11 and the concave cylindrical surface 22 of the housing 14 to prevent the housing 14 from contacting the base 11 when the housing 14 is rotated. S is provided. The gap S is formed with a narrow front part and a rear part (gap S1) and a wide center part (gap S2) along the longitudinal direction of the vehicle body, and a lower part of the gap S (especially the gap S2) is open. The width of the gap S2 at the center is set to such an extent that the water that has entered the gap S2 does not stay in the gap S2 due to surface tension.

  Reference numeral 24 denotes a housing undercover that closes a gap between the housing 14 and the base portion 12 </ b> A of the shaft 12 in the notch portion 20. Reference numeral 25 denotes a base undercover that closes the bottom of the base 11.

  Next, the operation of this embodiment will be described.

  In the present embodiment, as described above, of the gap S formed between the convex cylindrical surface 23 of the base 11 and the concave cylindrical surface 22 of the housing 14, the central gap S2 is the front side. And the width | variety is wider than the clearance gap S1 of the rear part side, the lower part of the clearance gap S2 is open | released, and also the width | variety of the clearance gap S2 is set to such an extent that the water which entered the clearance gap S2 does not stagnate by surface tension. Therefore, even if water such as rain enters the gap S2, the water is easily discharged from the lower part of the gap S2, and the water such as rain does not stagnate in the gap S2. As a result, it is possible to prevent water from freezing in the gap S2 in winter.

  Further, if the gap is formed with a constant width along the vehicle body longitudinal direction, wind noise is generated by wind (air) passing through the gap when the vehicle is traveling. Since the side and the rear side are narrow (gap S1) and wide in the center (gap S2), the flow velocity of the wind is reduced when passing through the gap S2, and the generation of wind noise can be prevented.

Example 2
8 to 11 show Example 2. FIG. 8 is a cross-sectional view taken along the line SA-SA in FIG. 2, FIG. 9 is an enlarged view of a portion C in FIG. 8, and FIG. A sectional view taken along line SB, FIG. 11 is an enlarged view of a portion D in FIG.

  In the first embodiment, the recess 23 </ b> A is formed in the convex cylindrical surface 23 of the base 11, but in this embodiment, the recess 22 </ b> A is formed in the concave cylindrical surface 22 of the housing 14. The depth of the recess 22A (depth from the cylindrical surface 22) is constant at all positions. In this embodiment, a gap is provided between the convex cylindrical surface 23 of the base 11 and the concave cylindrical surface 22 of the housing 14 to prevent the housing 14 from contacting the base 11 when the housing 14 is rotated. S is provided. The gap S is formed with a narrow front part and a rear part (gap S3) and a wide center part (gap S4) along the longitudinal direction of the vehicle body, and a lower part of the gap S (especially the gap S4) is open. The width of the gap S4 at the center is set to such an extent that the water that has entered the gap S4 does not stagnate in the gap S4 due to surface tension.

  In this embodiment, the lower portion of the gap S4 is opened, and the width of the gap S4 is set such that the water that has entered the gap S4 does not stagnate due to the surface tension. Even if the water enters, the water is easily discharged from the lower part of the gap S4, and the water does not stagnate in the gap S4. As a result, it is possible to prevent water from freezing in the gap S4 in winter.

  In this embodiment, the gap S is narrow (gap S3) on the front side and rear side (gap S3) and wide (gap S4) on the center, so that the flow velocity of the wind is reduced when passing through the gap S4. And wind noise can be prevented.

Example 3
12 and 13 show the third embodiment. FIG. 12 is an enlarged view of a main portion of the cross section taken along line SA-SA in FIG. 2, and FIG. 13 is a cross section taken along line SB-SB in FIG. It is a principal part enlarged view.

  In this embodiment, a recess 22 </ b> B is formed in the concave cylindrical surface 22 of the housing 14, and a recess 23 </ b> B is formed in the convex cylindrical surface 23 of the base 11. The depth of the recess 22B (depth from the cylindrical surface 22) is constant at all positions, and the depth of the recess 23B (depth from the cylindrical surface 23) is also the same at all positions. Is constant.

  In this embodiment, the housing 14 is prevented from coming into contact with the base 11 when the housing 14 is rotated between the convex cylindrical surface 23 of the base 11 and the concave cylindrical surface 22 of the housing 14. A gap S is provided. The gap S is formed with a narrow front part and a rear part (gap S5) and a wide center part (gap S6) along the longitudinal direction of the vehicle body, and a lower part of the gap S (especially the gap S6) is open. The width of the gap S6 in the center is set to such an extent that water that has entered the gap S6 does not stagnate in the gap S6 due to surface tension.

  In this embodiment, the lower part of the central gap S6 is opened, and the width of the gap S6 is set such that the water that has entered the gap S6 does not stagnate due to the surface tension. Even if water such as rain enters, the water is easily discharged from the lower part of the gap S6, and the water does not stagnate in the gap S6. As a result, it is possible to prevent water from freezing in the gap S6 in winter and the like.

  In the present embodiment, the gap S is narrow (gap S5) on the front side and rear side and wide (gap S6) on the center, so that the flow velocity of the wind is reduced when passing through the gap S6. And wind noise can be prevented.

Example 4
Next, Example 4 will be described with reference to FIGS.

  14 is an enlarged view of the E portion of FIG. 7, FIG. 15 is an enlarged view of the F portion of FIG. 11, and FIG. 16 is an enlarged view of the G portion of FIG.

  In the first embodiment, as shown in FIG. 14, the front side of the recess 23 </ b> A is a vertical surface 31 perpendicular to the cylindrical surface 23. Although not shown in the drawing, the rear side of the recess 23 </ b> A is also a vertical surface perpendicular to the cylindrical surface 23.

  Further, in the second embodiment, as shown in FIG. 15, the front side of the recess 22 </ b> A is a vertical surface 32 perpendicular to the cylindrical surface 22. Although not shown in the drawing, the rear side of the recess 22 </ b> A is also a vertical surface perpendicular to the cylindrical surface 22.

  Further, in Example 3, as shown in FIG. 15, the front side of the recess 22B is a vertical surface 33 perpendicular to the cylindrical surface 22, and the front side of the recess 23B is a cylindrical surface 23. On the other hand, a vertical surface 34 is formed. Although not shown in the drawing, the rear side of the recess 22B is also a vertical surface perpendicular to the cylindrical surface 22, and the rear side of the recess 23B is also a vertical surface perpendicular to the cylindrical surface 23. ing.

  This embodiment is configured as shown in FIGS. That is, as shown in FIG. 17, the front side of the recess 23 </ b> A is an inclined surface 35 that is inclined with respect to the cylindrical surface 23. Although not shown in the figure, the rear side of the recess 23 </ b> A is also an inclined surface inclined with respect to the cylindrical surface 23.

  As shown in FIG. 18, the front side of the recess 22 </ b> A is an inclined surface 36 that is inclined with respect to the cylindrical surface 22. Although not shown in the drawing, the rear side of the recess 22 </ b> A is also an inclined surface inclined with respect to the cylindrical surface 22.

  Further, as shown in FIG. 19, the front side of the recess 22B is an inclined surface 37 inclined with respect to the cylindrical surface 22, and the front side of the recess 23B is an inclined surface inclined with respect to the cylindrical surface 23. It is 38. Although not shown in the drawing, the rear side of the recess 22B is also inclined with respect to the cylindrical surface 22, and the rear side of the recess 23B is also inclined with respect to the cylindrical surface 23. ing.

  According to the present embodiment, by providing the inclined surfaces 35 to 38, in the gap S, the flow of wind is smooth from the front side to the center, and further from the center to the rear, and the wind noise is further increased. Further suppression can be achieved.

  Although the embodiments of the present invention have been described in detail with reference to the drawings, each of the above embodiments is only an example of the present invention, and the present invention is not limited only to the configuration of each of the above embodiments. . Needless to say, changes in design and the like within the scope of the present invention are included in the present invention.

DESCRIPTION OF SYMBOLS 10 Door mirror apparatus for motor vehicles 11 Base 12 Shaft 13 Mirror 14 Housing 16 Shaft support part 22 Concave cylindrical surface 22A, 22B Concave 23 Convex cylindrical surface 23A, 23B Concave 35-38 Inclined surface S, S1-S6 Clearance

Claims (5)

A base provided on the side of the vehicle body,
A shaft erected on the base;
A vehicle door mirror device comprising: a housing rotatably attached to the shaft and provided with a mirror that reflects the rear;
A gap is provided between the base and the housing to prevent the housing from contacting the base when the housing rotates.
The gap has a narrow front part and a rear part along the longitudinal direction of the vehicle body, a wide center part, and the lower part of the gap is opened.
The width of the gap at the center is set to such an extent that the water that has entered does not stagnate in the gap due to surface tension.   The automobile door mirror device according to claim 1, wherein a recess is formed on the base side as the gap in the central portion.   The automobile door mirror device according to claim 1, wherein a recess is formed on the housing side as the gap in the center portion.   The automobile door mirror device according to claim 1, wherein a recess is formed on each of the base side and the housing side as a gap in the central portion. 5. The base according to claim 1, wherein the outer surfaces of the base and the housing form a part of a cylindrical surface centered on the shaft at the location where the gap is provided. The automobile door mirror device according to Item.