JP2015202737A - Vehicular mirror device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular mirror device capable of avoiding secular reduction in fixation force between a base and a vehicle body, while restraining reduction in productivity.SOLUTION: A vehicular mirror device 10 comprises a collar 15 thermally pressed in a through-hole 21 so as to penetrate through a boss 22 of a base 14. The collar 15 can be fastened to a door 1 by a bolt 2 inserted into the inside. The collar 15 also comprises one end surface 23 positioned outside the through-hole 21 in one in the axial direction and becoming a seat surface of the bolt 2, and comprises the other surface 24 positioned outside the through-hole 21 in the other in the axial direction and abutting on the door 1. Thus, since there is no need to insert the collar 15 when molding the base 14, a molding process of the base 14 is simplified, and a molding die structure also becomes simple. Since axial force of the bolt 2 does not act on the base 14, secular reduction in fixation force between the base 14 and the door 1 when the axial force acts on the base 14, can be avoided.

Description

  The present invention relates to a vehicle mirror device.

  2. Description of the Related Art Conventionally, a vehicle mirror device such as a door mirror device includes a housing, a mirror provided in the housing, and a base that supports the housing, and is fastened to the vehicle body by fastening the base to the vehicle body with a fastening member. It is fixed. In the vehicle mirror device disclosed in Patent Document 1, the base is made of metal.

JP 2014-019274 A

  By the way, it is considered to reduce the weight by changing the base to one made of resin. When the base is made of resin, the axial force of the bolt acts on the resin member. In this case, even if the axial force is constant, the fixing force between the base and the vehicle body may decrease over time due to the creep phenomenon in which the amount of plastic deformation of the base increases with time. The higher the temperature, the faster the rate of increase in the amount of plastic deformation. Therefore, in a vehicle mirror device exposed to the outside of the vehicle and exposed to high temperatures, the fixing force tends to decrease. This reduction in fixing force cannot be solved by replacing the bolt with a spring washer.

On the other hand, when molding the base, it is conceivable to insert a metal collar into the base and fasten the collar to the vehicle body with bolts. However, when a plurality of collars are inserted into the base, the base molding process becomes complicated, and the structure of the molding machine (molding die) becomes complicated. Therefore, there is a problem that productivity is remarkably lowered.
The present invention has been made in view of the above-described points, and an object of the present invention is to provide a vehicle mirror device that suppresses a decrease in fixing force between a base and a vehicle body over time while suppressing a decrease in productivity. Is to provide.

The present invention is a vehicle mirror device that is fixed to a vehicle body by a fastening member, and supports a housing by forming a housing, a mirror provided in the housing, and a cylindrical boss having a through hole. A resin base and a cylindrical collar that is hot-pressed into the through-hole so as to penetrate the boss are provided.
The collar can be fastened to the vehicle body by a fastening member inserted inside. In addition, the collar has one end surface that is located outside the through hole in one axial direction and serves as a seating surface for the fastening member, and has the other end surface that is located outside the through hole in the other axial direction and contacts the vehicle body. doing.

  When the collar is hot-pressed into the base in this way, it is not necessary to insert the collar when the base is molded. Therefore, the base molding process is simplified and the structure of the mold is simplified. In addition, large-scale equipment is not required for hot press-fitting. Therefore, according to the present invention, it is possible to suppress a decrease in productivity due to the provision of the collar on the base.

  Further, the collar has one end surface serving as a bolt seat surface and the other end surface in contact with the vehicle body. That is, the resin base is not interposed between the collar and the vehicle body and between the collar and the bolt. Thereby, the axial force of the bolt acts on the collar and does not act on the base. Therefore, according to the present invention, it is possible to suppress a decrease in the fixing force between the base and the vehicle body due to the creep phenomenon.

The perspective view of the mirror device for vehicles by a 1st embodiment of the present invention. The side view which looked at the mirror device for vehicles of Drawing 1 from the direction of arrow II. III-III sectional view taken on the line of FIG. Sectional drawing which shows the 1st step when heat-pressing the color | collar of FIG. 3 to the boss | hub of a base. Sectional drawing which shows the 2nd step when heat-pressing the color | collar of FIG. 3 to the boss | hub of a base. Sectional drawing which shows the 3rd step when heat-pressing the color | collar of FIG. 3 to the boss | hub of a base. Sectional drawing of the base and collar of the mirror apparatus for vehicles by 2nd Embodiment of this invention.

Hereinafter, a plurality of embodiments of the present invention will be described with reference to the drawings. In the embodiments, substantially the same components are denoted by the same reference numerals and description thereof is omitted.
[First Embodiment]
1 and 2 show a vehicle mirror device according to a first embodiment of the present invention. The vehicle mirror device 10 is attached to the right door 1 which is a part of the vehicle body of the vehicle. The door mirror device mounted on the left door of the vehicle has the same configuration except that it is symmetrical with respect to the vehicle mirror device 10.

(Schematic configuration of vehicle mirror device)
First, a schematic configuration of the vehicle mirror device 10 will be described with reference to FIGS. 1 and 2.
The vehicle mirror device 10 includes a mirror assembly 13 including a mirror 11 and a housing 12, a base 14 that supports the mirror assembly 13, and a collar 15 provided on the base 14.

  The housing 12 is formed in a cup shape so as to open toward the rear of the vehicle. Inside the housing 12, the mirror 11, a mirror surface angle adjusting mechanism (not shown) capable of changing the mirror surface angle of the mirror 11, an electric storage mechanism (not shown) capable of moving the mirror assembly 13 between the use position and the storage position, etc. Is provided. The mirror 11 is provided inside the opening of the housing 12.

  The collar 15 has a cylindrical shape and is fastened to the door 1 by a bolt 2 inserted inside. In the present embodiment, three collars 15 are provided. In the present embodiment, the bolt 2 is screwed into the nut 3 integral with the door 1. The vehicle mirror device 10 is fixed to the door 1 by three bolts 2. The bolt 2 and the collar 15 are hidden from the outside by the cover 16.

(Detailed configuration of base and color)
Next, detailed configurations of the base 14 and the collar 15 will be described with reference to FIGS.
As shown in FIG. 3, the base 14 is made of resin and forms three cylindrical bosses 22 having through holes 21. The collar 15 is a metallic cylindrical member, and is hot-pressed into the through hole 21 so as to penetrate the boss 22. One end surface 23 of the collar 15 is located outside the through hole 21 in the axial direction and is a seating surface of the bolt 2. The other end surface 24 of the collar 15 is located outside the through hole 21 on the other side in the axial direction and is in contact with the door 1.

  The boss 22 has a welded portion 25, a gap forming portion 26 and a stopper portion 27. The welding portion 25 is located on the insertion port 28 side when the collar 15 is hot-pressed and is welded to the collar 15. The gap forming portion 26 is located on the opposite side of the insertion portion 28 with respect to the welded portion 25, and an annular gap 29 is formed between the gap 15 and the collar 15. The stopper portion 27 is an annular protrusion that protrudes inward on the opposite side of the gap 29 from the weld portion 25.

  The collar 15 includes a first cylinder part 31, a second cylinder part 32, and a flange part 33. The first cylinder part 31 is located inside the welded part 25. The second cylinder part 32 is located inside the gap forming part 26 and the stopper part 27 and has an outer diameter smaller than that of the first cylinder part 31. The flange portion 33 is located on the opposite side of the first tube portion 31 from the second tube portion 32 and is in contact with the end surface of the boss 22. The outer wall of the first cylindrical portion 31 has an uneven shape although not shown. For example, an oblique knurl, a flat knurl, or an Aya knurl is adopted as the uneven shape.

  When hot-pressing the collar 15 into the through hole 21, first, the second cylindrical portion 32 of the collar 15 is inserted into the through hole 21 of the boss 22 as shown in FIG. 4. The insertion port 28 of the through hole 21 is formed in a tapered shape, and the stepped portion 34 between the first cylindrical portion 31 and the second cylindrical portion 32 of the collar 15 is also formed in a tapered shape. Accordingly, when the second cylindrical portion 32 of the collar 15 is inserted into the through hole 21 of the boss 22, the stepped portion 34 comes into contact with the insertion port 28 and stops in a state where the collar 15 is centered with respect to the through hole 21. . This centering may be performed with a jig or the like.

  Subsequently, the collar 15 is pressed in the axial direction while being heated. Thereby, as shown in FIG. 5, the first cylindrical portion 31 of the collar 15 is inserted into the through hole 21 while the boss 22 is melted by the heat transmitted from the collar 15. As shown in FIG. 6, the collar 15 is pressed in the axial direction until the flange portion 33 contacts the end surface of the boss 22. The resin that is melted at this time is divided into one that enters the groove on the outer wall of the first cylindrical portion 31 and one that is pushed out toward the gap 29 (welding residue 35). The gap 29 functions as a space for storing the welding residue 35. Further, the stopper portion 27 functions as a stopper that suppresses the welding residue 35 from flowing out of the through hole 21. In FIG. 3, the illustration of the welding residue 35 is omitted.

(effect)
As described above, the vehicle mirror device 10 according to the first embodiment includes the cylindrical collar 15 that is hot-pressed into the through hole 21 so as to penetrate the boss 22 of the base 14. The collar 15 can be fastened to the door 1 by a bolt 2 inserted inside. The collar 15 has one end face 23 that is located outside the through hole 21 in the axial direction and serves as a seating surface of the bolt 2, and is located outside the through hole 21 in the other axial direction and contacts the door 1. It has the other end surface 24 which touches.

  When the collar 15 is hot-pressed into the base 14 in this way, it is not necessary to insert the collar 15 when the base 14 is molded. Therefore, the molding process of the base 14 is simplified, and the structure of the mold is simplified. In addition, large-scale equipment is not required for hot press-fitting. Therefore, according to the present embodiment, it is possible to suppress a decrease in productivity due to the provision of the collar 15 on the base 14.

  The collar 15 has one end surface 23 serving as a seating surface of the bolt 2 and the other end surface 24 abutting on the door 1. That is, the resin base 14 is not interposed between the collar 15 and the door 1 and between the collar 15 and the bolt 2. Thereby, the axial force of the bolt 2 acts on the collar 15 and does not act on the base 14. Therefore, according to the present embodiment, it is possible to prevent the fixing force between the base 14 and the door 1 from decreasing due to the creep phenomenon.

  In the first embodiment, the boss 22 is located on the insertion port 28 side when the collar 15 is hot-pressed and is welded to the collar 15, and the insertion port 28 is connected to the welding portion 25. It has a gap forming portion 26 that is located adjacent to the opposite side and that forms an annular gap 29 between the collar 15 and the collar 15. With this configuration, the resin (welding residue 35) that is melted and pushed out in the press-fitting direction when the collar 15 is hot-fitted into the through hole 21 can be stored in the gap 29.

In the first embodiment, the stopper portion 27 is provided on the opposite side of the gap 29 from the welded portion 25. The stopper portion 27 can suppress the welding residue 35 from flowing out of the gap 29. With this configuration, for example, when the bolt 2 is tightened, it is possible to suppress the welding residue 35 from being sandwiched between the bolt 2 and the one end face 23 of the collar 15.
In the first embodiment, the stopper portion 27 is a part of the boss 22. Therefore, it is possible to prevent the welding residue 35 from flowing out without increasing the number of parts.

  In the first embodiment, the collar 15 is positioned inside the first cylindrical portion 31 positioned inside the welded portion 25 of the boss 22, the gap forming portion 26 of the boss 22, and the stopper portion 27. A second cylindrical portion 32 having an outer diameter smaller than that of the first cylindrical portion 31. By comprising in this way, hot press injection can be started in the state in which the 2nd cylinder part 32 was inserted in the through-hole 21, as shown in FIG. Therefore, it is possible to prevent the molten resin from adhering to the one end surface 23 of the collar 15 and the vicinity thereof at the time of hot pressing.

[Second Embodiment]
A vehicle mirror device according to a second embodiment of the present invention will be described with reference to FIG.
In the second embodiment, the boss 41 does not have a stopper portion. Instead, the inner diameter of the gap forming portion 42 is set larger than that of the first cylindrical portion 31 of the collar 15. Thereby, the volume of the gap | interval 43 is large compared with 1st Embodiment. Therefore, according to the second embodiment, a large amount of weld residue can be accumulated in the gap 43. In addition, illustration of the welding residue is abbreviate | omitted in FIG.

[Other Embodiments]
In other embodiments of the present invention, the collar may be fastened to a location other than the vehicle door.
In another embodiment of the present invention, the first tube portion and the second tube portion of the collar may have the same outer diameter.
In other embodiments of the present invention, the outer wall surface of the collar may be tapered.
In another embodiment of the present invention, the stopper may be composed of a member separate from the base.
In another embodiment of the present invention, one or both of the mirror surface angle adjustment mechanism and the electric storage mechanism may not be provided.
The present invention is not limited to the embodiments described above, and can be implemented in various forms without departing from the spirit of the invention.

1 ・ ・ ・ Door (car body)
DESCRIPTION OF SYMBOLS 2 ... Bolt 10 ... Vehicle mirror apparatus 11 ... Mirror 12 ... Housing 13 ... Mirror assembly 14 ... Base 15 ... Color 21 ... Through-hole 22, 41 ...・ Boss 23 ・ ・ ・ One end surface 24 ・ ・ ・ Other end surface 25 ・ ・ ・ Welding part 26, 42 ・ ・ ・ Gap forming part 27 ・ ・ ・ Stopper part 28 ・ ・ ・ Insertion port 29, 43 ・ ・ ・ Gap 31 .... First cylinder part 32 ... Second cylinder part 33 ... Flange part 34 ... Stepped part 35 ... Welding residue

Claims (5)

A vehicle mirror device fixed to a vehicle body by a fastening member,
A housing;
A mirror provided in the housing;
A resin base that supports the housing and forms a cylindrical boss having a through hole;
It is cylindrical and can be fastened to the vehicle body by the fastening member inserted into the through-hole so as to penetrate the boss and inserted inside, and is positioned outside the through-hole in one of the axial directions A collar having one end surface serving as a seating surface of the fastening member, and having the other end surface that is positioned outside the through hole and contacts the vehicle body on the other side in the axial direction;
A vehicle mirror device comprising: The boss
Of the through-holes, located on the insertion port side when the collar is hot-fitted, and welded to the collar,
A gap forming part that is located adjacent to the welding part on the opposite side of the insertion port and that forms an annular gap between the collar and
The vehicle mirror device according to claim 1, comprising: When the collar is hot-pressed into the through hole and the resin that is melted and pushed out into the gap is a welding residue,
The vehicle mirror device according to claim 2, further comprising a stopper that is located on a side opposite to the welding portion with respect to the gap and prevents the welding residue from flowing out of the gap.   The vehicle mirror device according to claim 3, wherein the stopper is a part of the boss. The color is
A first tube portion located inside the weld portion;
A second cylindrical portion located inside the gap forming portion and having a smaller outer diameter than the first cylindrical portion;
The vehicle mirror device according to any one of claims 2 to 4, wherein the vehicle mirror device is provided.

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