JP2013237374A - Door mirror for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door mirror for a vehicle allowing simple rigidity-bonding of a shaft for supporting a door mirror unit to a door mirror base and having the advantage of cost by reducing the number of components.SOLUTION: In a shaft 2 for supporting a door mirror unit 3, a projection 26 at a lower end is disposed to non-rotatably pass through a door mirror base 1. The projection is prevented from coming off and is fixed by forcibly fitting and engaging a clip 4 between a groove 28 on a peripheral surface of the projection 26 and a lower surface of the door mirror base 1 on the lower surface side.

Description

  The present invention relates to a vehicle door mirror.

  In a vehicle door mirror, a door mirror unit is assembled to a door mirror base fixed to a vehicle side (door side) via a shaft.

  This door mirror unit can be rotated to the folding storage position with the mirror surface facing the door side around the shaft, and the deployment use position with the mirror surface facing the rear of the vehicle by changing the phase by approximately 90 ° from the folding storage position. It is said that.

  For this reason, a required attachment rigidity is requested | required with respect to a door mirror base so that a shaft can fully endure the dynamic load of a door mirror unit. For example, as shown in Patent Document 1, a flange portion at the lower end of a shaft is placed on a door mirror base using a positioning means such as a boss, and fastened with a plurality of screws from the lower surface side of the door mirror base, and a rigid body Try to combine.

Japanese Patent Laid-Open No. 2004-9806

  It is necessary to use a spring washer and a flat washer together with the screw that fixes the shaft to the door mirror base in order to prevent buckling and loosening.

  In addition, it is necessary to apply a locking material (adhesive material) to the threaded portion of the screw itself or to use a special screw with a locking shape applied to the screw thread, which increases the number of parts described above. It is undeniable that it will be disadvantageous in terms of cost.

  Furthermore, screw fastening is generally performed at three or more locations, and a plurality of screws are not fastened simultaneously, and there is a problem that a large number of assembly steps and work time are required.

  SUMMARY OF THE INVENTION Accordingly, the present invention provides a vehicle door mirror that can easily and rigidly couple a shaft that supports a door mirror unit to a door mirror base, and that can be advantageously obtained in terms of cost by reducing the number of coupling parts. .

  A vehicle door mirror according to the present invention includes a door mirror base that is fixed to a side portion of the vehicle, and a door mirror unit that is rotatable about a shaft that is fixed to the door mirror base to a folding storage position and a deployment use position. Yes.

  The shaft is disposed at the lower end thereof so as not to rotate with respect to the door mirror base, and protrudes from a lower surface side of the door mirror base, and a peripheral surface of a portion of the protrusion protruding from the lower surface of the door mirror base And a pair of grooves formed on the surface.

  The main feature is that the protrusion is fixed by the groove and a clip press-fitted and engaged between the groove and the lower surface of the door mirror base.

  According to the present invention, the non-rotating penetrating arrangement of the protrusion at the lower end of the shaft with respect to the door mirror base can be easily performed by, for example, forming the protrusion and the mounting hole of the door mirror base through which the protrusion is inserted into a non-circular shape. it can.

  Then, on the lower surface side of the door mirror base, the projecting portion can be prevented from being detached by press-fitting and engaging a clip between the groove on the circumferential surface of the projecting portion and the lower surface of the door mirror base.

  As a result, the shaft can be rigidly coupled to the door mirror base in a non-rotating manner and capable of sufficiently resisting the detachment load.

  As a result, only one clip is required for coupling, and the clip can be coupled by a one-touch operation that press-fits between the groove and the lower surface of the door mirror base, thereby reducing the number of parts and improving the assembly workability. .

The perspective view which looked at one embodiment of the door mirror for vehicles of the present invention from the lower side. The disassembled perspective view of the door mirror shown in FIG. The expanded sectional view of the principal part which shows a shaft fixing | fixed part. Sectional drawing which follows the AA line of FIG. The perspective view of a clip. The perspective view which shows the other example of a clip.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings, taking a manually retractable door mirror as an example.

  The door mirror of this embodiment shown in FIGS. 1 and 2 includes a door mirror base 1 fixed to a vehicle side, specifically, a door side of a front door (not shown), and a shaft 2 fixed to the door mirror base 1. And a door mirror unit 3 rotatably supported on the door mirror base 1 by the shaft 2.

  In the example shown in FIGS. 1 and 2, the door mirror unit 3 is shown with only the housing 31 with the internal functional parts such as the mirror main body and its support mechanism removed.

  Further, the door mirror base 1 is shown in a state in which a blind cover (not shown) that closes the work opening on the lower surface is removed.

  The door mirror base 1, the housing 31 of the door mirror unit 3, and the shaft 2 are all made of an appropriate synthetic resin.

  The door mirror base 1 includes an attachment part 11 that is fastened and fixed to a door side (not shown), and an arm part 12 that projects substantially horizontally from the attachment part 11 to the side and supports the door mirror unit 3 via the shaft 2. I have.

  The shaft 2 is sub-assembled to the door mirror unit 3, and the lower end thereof is fixed to the arm portion 12 of the door mirror base 1.

  Specifically, a box-shaped bearing portion 32 opened on the lower surface is integrally formed near one side of the housing 31 of the door mirror unit 3.

  The upper end of the bearing portion 32 is formed as a flat surface, and the shaft insertion hole 33 is provided through the upper end surface from the lower surface of the housing 31 as described above.

  The shaft 2 is integrally formed with a circular flange 21 at the lower end, and is inserted through the shaft insertion hole 33 of the bearing portion 32 from the lower surface side of the housing 31.

  An opening diameter of the shaft insertion hole 33 opened on the lower surface of the housing 31 is stepped and formed with a large diameter so that the flange 21 of the shaft 2 can be received.

  The upper end portion of the shaft 2 protruding from the upper end surface of the bearing portion 32 is elastically mounted with the coil spring 22 compressed.

  The coil spring 22 functions to maintain a pressing force of a rotational moderation mechanism (not shown) provided between the shaft 2 and the bearing portion 32 and to prevent the door mirror unit 3 from rattling. It is elastically mounted in a compressed state between the disposed washer 23 and a push nut 25 engaged with an annular groove 24 at the upper end of the shaft.

  On the lower surface of the flange 21 of the shaft 2, a small-diameter protrusion 26 is integrally formed on the same axis as the shaft 2.

  The protruding portion 26 is formed in a non-circular shape by providing a pair of flat surfaces 27 on the circumferential surface thereof in parallel with the line symmetry.

  On the other hand, the arm portion 12 of the door mirror base 1 is formed with a mounting hole 13 through which the protruding portion 26 is inserted.

  The mounting hole 13 is formed in the same non-circular shape as the outer shape of the projecting portion 26. By inserting the projecting portion 26 from above into the mounting hole 13 and penetrating the shaft 2, the shaft 2 is mounted on the door mirror base 1. Non-rotating.

  A pair of parallel grooves 28 are formed in line symmetry on the peripheral surface of the protruding portion 26 protruding from the lower surface of the arm portion 12.

  In the example shown in FIG. 2, the grooves 28 are formed in the pair of flat surfaces 27.

  Then, between the groove 28 and the lower surface of the arm portion 12, a metal clip 4 having a pair of insertion portions 41 and formed in a U shape is press-fitted and engaged as shown in FIGS. Thus, the protruding portion 26 is fixed to prevent it from coming off.

  As a result, the door mirror unit 3 is manually operated with respect to the door mirror base 1, the folding storage position in which the mirror surface faces the door side around the shaft 2, and the phase of the mirror is changed by approximately 90 ° from the folding storage position. It can be rotated to the deployment use position facing backward.

  In addition, a click feeling is obtained for the rotation of the door mirror unit 3 by a rotation moderation mechanism (not shown) to which the compression reaction force of the coil spring 22 acts.

  As shown in FIGS. 4 and 5, the clip 4 is formed with a hook 42 on the top surface side of the distal end of each insertion portion 41. On the other hand, a hook engaging groove 14 is provided on the lower surface of the arm portion 12 so that the hook 42 falls and engages, and the hook 4 and the hook engaging groove 14 are engaged to prevent the clip 4 from coming off. .

  The hook 42 and the hook engaging groove 14 may have a reverse relationship to the above, that is, the hook may be provided on the lower surface of the arm portion 12 and the hook engaging groove may be provided on the distal end portion of the clip 4.

  In addition, as a means for preventing the clip 4 from being removed, a screw seat 43 is provided at the fork base portion of the clip 4 as shown in FIG. 6, and this is fastened and fixed to the lower surface of the arm portion 12 with a screw 44. Also good.

  Here, in this embodiment, as shown in FIG. 4, the door mirror is attached to the shaft 2 by sliding friction between the lower groove surface of the groove 28 and the lower surface of the clip 4 when the clip 4 is press-fitted. An inclined surface 5 for applying a pressing force in a thrust direction to be pressed against the arm portion 12 of the base 1 is formed.

  A recess 15 is formed in the lower surface of the arm portion 12 with a groove width corresponding to the outer width of the clip 4 along the press-fitting direction of the clip 4.

  Thus, when the clip 4 is press-fitted, the outer edge of the insertion portion 41 of the clip 4 slides and engages with the side edge of the recess 15 to guide the press-fitting of the clip 4 into the parallel groove 28, and The clip 4 is received in the recess 15 to prevent the clip 4 from coming off due to vibration or the like.

  According to the vehicle door mirror of the present embodiment having the above-described configuration, the shaft 2 that supports the door mirror unit 3 has a projection 26 at the lower end thereof disposed so as not to rotate with respect to the arm portion 12 of the door mirror base 1. Yes. Then, on the lower surface side of the arm portion 12, the clip 4 is press-fitted and engaged between the groove 28 on the circumferential surface of the projection portion and the lower surface of the arm portion 12, and fixed to prevent it from coming off.

  As a result, the shaft 2 can be rigidly coupled to the door mirror base 1 in a non-rotating manner and capable of sufficiently resisting the separation load.

  As a result, only one clip 4 is required for coupling, and the clip 4 can be coupled by one-touch work in which the clip 4 is press-fitted between the groove 28 of the protrusion 26 and the lower surface of the arm 12 as described above. Can be reduced and the assembly workability can be improved, thereby contributing to cost reduction.

  Further, in this embodiment, the arm of the door mirror base 1 is attached to the shaft 2 by sliding friction between the lower groove surface of the groove 28 and the lower surface of the insertion portion 41 of the clip 4 when the clip 4 is press-fitted. An inclined surface 5 for providing a pressing force in the thrust direction to be pressed against the portion 12 is provided.

  Thereby, the shaft 2 can be strongly clamped to the arm part 12 by the wedge effect by the press-fitting of the clip 4, and can be fixed more firmly.

  Furthermore, in addition to being able to guide the press-fitting of the clip 4 by the recess 15 on the lower surface of the arm part 12, the press-fitting direction of the clip 4 can be defined, so that the assembling workability of the clip 4 can be improved.

  Moreover, since the clip 4 can be received by the recess 15 and the movement thereof can be suppressed, it is possible to prevent the clip 4 from being detached due to vibration or the like.

  In the above embodiment, a manual storage type is shown in which the bearing portion 32 is formed in the housing 31 of the door mirror unit 3 and the shaft 2 is directly assembled with the coil spring 22 in the compressed state. It is also possible to apply to types.

  In this case, the shaft 2 and the coil spring 22 may be assembled to a drive unit including a motor and a transmission gear, and the drive unit may be sub-assembled to the housing 31 of the door mirror unit 3.

  Thereby, the assembly structure of the shaft 2 and the door mirror base 1 can be the same as that of the above embodiment.

DESCRIPTION OF SYMBOLS 1 ... Door mirror base 11 ... Attachment part 12 ... Arm part 13 ... Mounting hole 15 ... Recess 2 ... Shaft 21 ... Flange 22 ... Coil spring 26 ... Projection part 28 ... Groove 3 ... Door mirror unit 32 ... Bearing part 33 ... Shaft insertion hole 4 ... Clip 41 ... Insertion part 5 ... Inclined surface

Claims (3)

A door mirror for a vehicle comprising: a door mirror base fixed to a vehicle side portion; and a door mirror unit that is rotatable about a shaft fixed to the door mirror base and folded to a storage position and a deployment use position,
The shaft is disposed at the lower end thereof so as not to rotate with respect to the door mirror base, and protrudes from a lower surface side of the door mirror base, and a peripheral surface of a portion of the protrusion protruding from the lower surface of the door mirror base A pair of grooves formed in
The vehicle door mirror according to claim 1, wherein the protrusion is fixed and secured by the groove and a clip press-fitted and engaged between the groove and the lower surface of the door mirror base.   Formed on the lower groove surface of the groove and the lower surface of the clip is an inclined surface that applies a pressing force in a thrust direction that presses the shaft against the door mirror base by mutual friction when the clip is press-fitted. The vehicle door mirror according to claim 1. The lower surface of the door mirror base is provided with a recess that slides and engages with the outer edge of the clip to guide the press-fitting of the clip into the groove of the protrusion and receives the clip. The vehicle door mirror according to claim 1 or 2.

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