JP2013049329A - Door mirror device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the vibration of a mirror and a housing member thereof caused by an air flow when a vehicle travels.SOLUTION: In the door mirror device 10 for the vehicle, an air flow W1 flows along a first deflection surface 26 of an air flow deflection surface 24 and is deflected in a vehicle width direction as getting closer to the rear part of the vehicle, and an air flow W2 flows along a second deflection surface 28 of the air flow deflection surface 24 and is deflected in a vehicle width direction as getting closer to the rear part of the vehicle. This configuration allows a vortex E1 and a vortex E3 to be main bodies at the rear part of the vehicle of a door mirror body 16 to act so that air flows W1 and W3 are blown back toward the inside in the vehicle width direction of a door mirror body 16. This allows the blown back air flows W1 and W3 to hit the inner part of the door mirror body 16 in the vehicle width direction to thereby reduce the turning force of a support shaft 14 acting on the door mirror body 16. Thus, the vibration of the mirror 20 and the door mirror visor 18 caused by the air flow when the vehicle the travels can be reduced.

Description

  The present invention relates to a vehicle door mirror device including an air flow deflecting surface that deflects an air flow at an inner portion in a vehicle width direction of a housing member that houses a mirror.

  In the door mirror device described in Patent Document 1 below, the outer peripheral surface on the inner side in the vehicle width direction of the mirror housing that houses the mirror is inclined outward in the vehicle width direction toward the rear of the vehicle. Thereby, when the vehicle travels, interference between the vortex generated by the front pillar and the vortex generated by the mirror housing is prevented.

JP 2007-076451 A

  However, in this door mirror device, when an air flow flowing along the inner surface in the vehicle width direction of the mirror housing passes through the mirror housing when the vehicle travels, the air flow is seen from the vehicle upper side at the vehicle rear side of the door mirror device. In some cases, a vortex may be formed from the inside in the direction to the outside in the vehicle width direction.

  In this case, the airflow that circulates outward in the vehicle width direction hits the outer side of the mirror in the vehicle width direction. For this reason, turning force (torque) around the pivot center provided on the inner side in the vehicle width direction of the door mirror device acts on the mirror and the mirror housing, and the mirror and the mirror housing are caused by the fluctuation (torque fluctuation) of the turning force. Vibrates. Thereby, the visibility of a mirror may fall.

  In view of the above fact, an object of the present invention is to provide a vehicle door mirror device that can suppress vibrations of a mirror and a housing member due to an air flow during vehicle travel.

  The vehicle door mirror device according to claim 1 is a housing member that houses a mirror for visually recognizing the rear of the vehicle, and a support member that is assembled to the vehicle and rotatably supports an inner side in the vehicle width direction of the housing member. And an air flow in the vehicle width direction inner side of the outer peripheral portion of the housing member, and deflects the air flow in the vehicle width direction inner upper portion of the housing member toward the vehicle width direction as it goes rearward of the vehicle, and the vehicle width of the housing member An air flow deflecting surface that deflects the air flow in the lower portion in the direction of the vehicle toward the inner side in the vehicle width direction toward the rear of the vehicle.

  In the vehicle door mirror device according to the first aspect, the vehicle width direction inner side portion of the housing member is rotatably supported by the support member assembled to the vehicle, and the rear of the vehicle is visually confirmed in the housing member. A mirror is housed. In addition, an air flow deflection surface is provided on the inner side in the vehicle width direction on the outer peripheral portion of the housing member.

  Here, the air flow deflecting surface deflects the air flow in the vehicle width direction inner upper portion of the housing member toward the vehicle width outer side as it goes rearward of the vehicle, and also causes the air flow in the vehicle width direction inner lower portion of the housing member to the vehicle rear. The vehicle is deflected inward in the vehicle width direction.

  For this reason, the wraparound of the vehicle door mirror device to the rear of the vehicle due to the air flow at the inner lower portion of the housing member in the vehicle width direction is suppressed, and the vehicle width direction inner side to the vehicle width direction outer side in the vehicle rear region of the vehicle door mirror device. Occurrence of vortices that go around is suppressed.

  Further, in the vehicle rear region of the vehicle door mirror device, the air flow that has passed through the outside in the vehicle width direction of the housing member forms a vortex that turns from the outside in the vehicle width direction to the inside in the vehicle width direction, and the vehicle width direction of the housing member The air flow in the inner upper part forms a vortex with the vehicle longitudinal direction as an axis. These vortices act so that the air flow behind the vehicle door mirror device is blown back toward the inner side in the vehicle width direction of the vehicle door mirror device. For this reason, since this blown-back airflow strikes the site | part of the rotation center side of the accommodating member in the door mirror apparatus for vehicles, the rotational force which acts on the mirror and accommodating member by an airflow can be reduced.

  The vehicle door mirror device according to claim 2 is the vehicle door mirror device according to claim 1, wherein an upper portion of the air flow deflection surface is inclined outward in the vehicle width direction toward the rear of the vehicle. The lower part of the air flow deflection surface is constituted by a second deflection surface that is inclined inward in the vehicle width direction toward the rear of the vehicle.

  In the vehicle door mirror device according to the second aspect, the upper part of the air flow deflection surface is constituted by the first deflection surface, and the lower part of the air flow deflection surface is constituted by the second deflection surface. The first deflection surface is inclined outward in the vehicle width direction toward the rear of the vehicle. Thereby, the airflow in the vehicle width direction inner side upper part of an accommodating member flows along a 1st deflection surface, and is deflected to the vehicle width direction outer side. Further, the second deflection surface is inclined inward in the vehicle width direction toward the rear of the vehicle. Thereby, the air flow in the vehicle width direction inner lower part of the accommodating member flows along the second deflection surface and is deflected inward in the vehicle width direction.

  A vehicle door mirror device according to a third aspect is the vehicle door mirror device according to the second aspect, wherein the air flow deflecting surface is continuously formed in the vertical direction.

  In the vehicle door mirror device according to the third aspect, since the air flow deflection surface is continuously formed in the vertical direction, the first deflection surface and the second deflection surface can be formed without any step. Thereby, an airflow deflection surface can be provided without impairing the design performance of the vehicle door mirror device.

  According to the vehicle door mirror device of the first aspect, it is possible to suppress the vibrations of the mirror and the housing member due to the air flow when the vehicle travels.

  According to the vehicle door mirror device of the second aspect, it is possible to suppress the vibration of the mirror and the housing member due to the air flow during traveling of the vehicle with a simple configuration.

  According to the vehicle door mirror device of the third aspect, the air flow deflecting surface can be provided without impairing the design performance of the vehicle door mirror device.

It is the perspective view seen from the vehicle left diagonal back which shows the door mirror device for vehicles concerning this embodiment. (A) is the rear view which looked at the vehicle door mirror apparatus shown by FIG. 1 from the vehicle back, (B) is the top view which looked at the vehicle door mirror apparatus from the vehicle upper direction. (A) is a cross-sectional view (cross-sectional view taken along line 3A-3A in FIG. 2 (A)) showing the upper part of the kick portion provided in the door mirror visor of the vehicle door mirror device shown in FIG. 2 (A). FIG. 3B is a cross-sectional view (a cross-sectional view taken along line 3B-3B in FIG. 2A) showing a lower portion of the kick portion provided in the door mirror visor. (A) is the rear view which looked at the vehicle door mirror device of the comparative example from the vehicle back, (B) is the top view which looked at the vehicle door mirror device of (A) from the vehicle upper direction. It is the perspective view seen from the vehicle left diagonal back which shows the kick part provided in the door mirror visor of the vehicle door mirror apparatus shown by FIG.

  FIG. 1 shows a perspective view of a vehicle door mirror device 10 according to an embodiment of the present invention as seen from the diagonally rear left side of the vehicle. 2A shows a rear view of the vehicle door mirror device 10 as viewed from the rear of the vehicle, and FIG. 2B shows a plan view of the vehicle door mirror device 10 as viewed from above the vehicle. It is shown in the figure. Note that an arrow RR appropriately shown in these drawings indicates the rear of the vehicle, an arrow OUT indicates an outer side in the vehicle width direction (right side of the vehicle), and an arrow UP indicates an upper side of the vehicle.

  As shown in FIGS. 2A and 2B, the vehicle door mirror device 10 is installed on a door 30 of the vehicle, and a pair of the vehicle door mirror devices 10 are provided on the outer side in the vehicle width direction of the vehicle. Yes. And this pair of vehicle door mirror apparatus 10 is comprised left-right symmetrically in the vehicle width direction. For this reason, the vehicle door mirror device 10 installed on the right door of the vehicle will be described, and the description of the vehicle door mirror device 10 installed on the left door of the vehicle will be omitted.

  As shown in FIG. 1, the vehicle door mirror device 10 includes a stay 12 as a support member and a mirror main body 16.

  The stay 12 constitutes a lower part of the vehicle door mirror device 10. The inner end of the stay 12 in the vehicle width direction is assembled to the door 30 of the vehicle, and the stay 12 protrudes outward from the door 30 in the vehicle width direction. The stay 12 is provided with a cylindrical support shaft 14 at the outer side in the vehicle width direction (see FIG. 2B), and the support shaft 14 protrudes upward from the stay 12.

  The mirror body 16 constitutes the upper part of the vehicle door mirror device 10 and is disposed above the stay 12. The mirror main body 16 is rotatably supported on the support shaft 14 of the stay 12 at the inner side in the vehicle width direction, so that the mirror main body 16 can be moved to the use position (FIGS. 2A and 2B). And a retracted position rotated from the use position to the rear of the vehicle.

  The mirror main body 16 has a door mirror visor 18 as a housing member. The door mirror visor 18 is formed in a concave shape opened to the rear of the vehicle, and the inner side surface in the vehicle width direction at the outer peripheral portion of the door mirror visor 18 is inclined outward in the vehicle width direction toward the rear of the vehicle at the use position. . The door mirror visor 18 accommodates a mirror 20 for rearward visual recognition of the vehicle, and the mirror 20 is held by a holding mechanism (not shown) provided in the door mirror visor 18.

  A kick portion 22 is integrally provided on the outer peripheral portion of the door mirror visor 18 at the inner side in the vehicle width direction, and the kick portion 22 is formed in a substantially triangular prism shape. An inner surface in the vehicle width direction of the kick portion 22 is an air flow deflection surface 24. The air flow deflection surface 24 includes a first deflection surface 26 that constitutes an upper portion thereof and a second deflection surface 28 that constitutes a lower portion thereof. And have.

  As shown in FIGS. 3A and 3B, the first deflection surface 26 is an orthogonal plane H orthogonal to the vehicle width direction (see the two-dot chain line shown in FIGS. 3A and 3B). On the other hand, the second deflection surface 28 is inclined inward in the vehicle width direction toward the vehicle rear side with respect to the orthogonal surface H as it goes toward the vehicle rear side. The first deflection surface 26 and the second deflection surface 28 are formed continuously in the vehicle vertical direction. That is, the inclination of the first deflection surface 26 with respect to the orthogonal surface H is gradually changed so as to approach the orthogonal surface H as it goes downward, and is orthogonal at the boundary portion between the first deflection surface 26 and the second deflection surface 28. It coincides with the surface H. Further, the inclination of the second deflection surface 28 with respect to the orthogonal surface H is gradually changed so as to be separated from the orthogonal surface H as it goes downward. Thereby, the first deflection surface 26 and the second deflection surface 28 are formed without a step.

  Next, the operation and effect of this embodiment will be described together with comparative examples shown in FIGS. 4 (A) and 4 (B). The vehicle door mirror device 100 in this comparative example has substantially the same configuration as the vehicle door mirror device 10 of the present embodiment, but the vehicle door mirror device 100 does not include the kick portion 22 of the vehicle door mirror device 10. The same reference numerals as those of the vehicle door mirror device 10 are assigned to the same components in the vehicle door mirror device 100 as those of the vehicle door mirror device 10.

  First, as shown in FIGS. 4A and 4B, when a vehicle equipped with the vehicle door mirror device 100 of the comparative example travels (especially when traveling at high speed), the inside of the door mirror visor 18 in the vehicle width direction. The air flow W1 ′ flowing through the vehicle flows along the inner side in the vehicle width direction at the outer peripheral portion of the door mirror visor 18, and is deflected outward in the vehicle width direction toward the rear of the vehicle. When the air flow W1 ′ passes through the inside of the door mirror visor 18 in the vehicle width direction, the air flow W1 ′ is reflected from the vehicle width direction inner side to the vehicle width direction outer side as viewed from above the vehicle at the rear of the door mirror main body portion 16. A vortex E1 ′ that turns clockwise is formed. For this reason, the airflow W1 'blown back to the door mirror main body 16 side by the vortex E1' hits the vehicle width direction outer side portion of the door mirror main body 16 (see the range surrounded by the dotted line in FIG. 4B). Thereby, turning force (torque) around the support shaft 14 acts on the door mirror main body 16. Therefore, the door mirror main body 16 vibrates around the support shaft 14 due to fluctuations in torque (torque fluctuation) acting on the door mirror main body 16.

  On the other hand, as described above, the vehicle door mirror device 10 according to the present embodiment is provided with the kick portion 22 at the inner side in the vehicle width direction on the outer peripheral portion of the door mirror visor 18, and the vehicle width direction of the kick portion 22 is determined. The inner surface is an air flow deflecting surface 24.

  Here, the upper part of the air flow deflecting surface 24 is constituted by a first deflecting surface 26, and the first deflecting surface 26 is inclined outward in the vehicle width direction toward the rear of the vehicle. The lower part of the air flow deflecting surface 24 is constituted by a second deflecting surface 28, and the second deflecting surface 28 is inclined inward in the vehicle width direction toward the rear of the vehicle.

  Therefore, as shown in FIGS. 2 (A) and 2 (B), when the vehicle equipped with the vehicle door mirror device 10 travels (particularly when traveling at high speed), the door mirror visor 18 has an inner upper portion in the vehicle width direction. The air flow W1 flows along the first deflection surface 26 of the air flow deflection surface 24 and is deflected outward in the vehicle width direction toward the rear of the vehicle. In addition, the air flow W2 at the lower inner side in the vehicle width direction of the door mirror visor 18 flows along the second deflection surface 28 of the air flow deflection surface 24 and is deflected inward in the vehicle width direction toward the rear of the vehicle.

  Thereby, after the air flow W2 passes through the inside of the door mirror visor 18 in the vehicle width direction, the wraparound of the door mirror main body portion 16 of the air flow W2 to the vehicle rear is suppressed. Therefore, in the present embodiment, unlike the vehicle door mirror device 100 in the comparative example, generation of the vortex E1 'that turns counterclockwise from the vehicle width direction inner side to the vehicle width direction outer side when viewed from above is suppressed.

  Further, when the air flow W3 flowing along the outer side in the vehicle width direction of the door mirror main body 16 passes the outer side in the vehicle width direction of the door mirror main body 16, the air flow W3 is seen from the vehicle width direction outer side as viewed from above the vehicle. A vortex E3 that turns clockwise inward is formed. Further, when the air flow W1 passes through the inside of the door mirror visor 18 in the vehicle width direction, the air flow W1 forms a clockwise vortex E1 with the vehicle longitudinal direction as an axis when viewed from the rear of the vehicle. That is, the vortex E1 caused by the air flow W1 and the vortex E3 caused by the air flow W3 are mainly used in the region of the door mirror main body 16 at the rear of the vehicle.

  And in the area | region of the vehicle rear of the door mirror main-body part 16, the vortex of the vortex E1 and the vortex E3 is mainly formed, and the air flows W1 and W3 in the vehicle rear of the door mirror main-body part 16 are the door mirror main-body part 16. It acts so as to be blown back toward the inner side in the vehicle width direction. For this reason, the blown-back airflows W1 and W3 hit the inner side in the vehicle width direction of the door mirror main body 16 (see the range surrounded by the dotted line in FIG. 2B). That is, the blown-back airflows W1 and W3 strike a portion on the support shaft 14 side that is the center of rotation of the mirror main body 16. Thereby, the rotational power around the support shaft 14 acting on the door mirror main body 16 of the present embodiment can be reduced as compared to the rotational power around the support shaft 14 acting on the door mirror main body 16 of the comparative example (for example, 1 / 3). Therefore, the fluctuation (torque fluctuation) of the rotational force acting on the door mirror main body 16 is suppressed, and the vibration around the support shaft 14 of the door mirror main body 16 is suppressed.

  As described above, the vibration of the mirror main body 16 (mirror 20 and door mirror visor 18) due to the airflow when the vehicle is running can be suppressed.

  Further, in the vehicle door mirror device 10, an air flow deflecting surface 24 (kick portion 22) is provided in a portion on the inner side in the vehicle width direction on the outer peripheral portion of the door mirror visor 18. For this reason, the air flow deflection surface 24 (kick portion 22) can be provided without hindering the field of view when the occupant visually recognizes the mirror 20. Further, the air flow deflecting surface 24 (kick portion) can be obtained without affecting the rotation of the door mirror main body portion 16 between the use position and the storage position and the holding mechanism for holding the mirror 20 accommodated in the door mirror visor 18. 22) can be provided.

  Further, in the vehicle door mirror device 10, as described above, the upper portion of the air flow deflection surface 24 is configured by the first deflection surface 26, and the lower portion of the air flow deflection surface 24 is configured by the second deflection surface 28. Yes. The first deflection surface 26 is inclined outward in the vehicle width direction toward the rear of the vehicle, and the air flow W1 is deflected outward in the vehicle width direction by the first deflection surface 26. The second deflection surface 28 is inclined inward in the vehicle width direction toward the rear of the vehicle, and the air flow W2 is deflected inward in the vehicle width direction by the second deflection surface 28. Therefore, the vibration of the mirror main body 16 (mirror 20 and door mirror visor 18) due to the airflow during vehicle travel can be suppressed with a simple configuration.

  In the vehicle door mirror device 10, the air flow deflection surface 24 is continuously formed in the vertical direction. For this reason, since the first deflection surface 26 and the second deflection surface 28 of the air flow deflecting surface 24 are formed without any step, the air flow deflecting surface 24 (kick portion 22) without impairing the design performance of the vehicle door mirror device 10. ) Can be provided.

  In the present embodiment, the air flow deflection surface 24 is formed continuously in the vertical direction, and the inclination of the first deflection surface 26 and the second deflection surface 28 with respect to the orthogonal surface H is gradually changed as it goes downward. Has been. Instead, as shown in FIG. 5, the inclination of the first deflection surface 26 and the second deflection surface 28 with respect to the orthogonal plane H may be set constant. In this case, a connecting surface 32 that connects the first deflecting surface 26 and the second deflecting surface 28 is provided, and the connecting surface 32 is formed so as to incline in the vehicle width direction as it goes downward. Also good.

  Moreover, in this Embodiment, although the door mirror visor 18 is comprised by 1 component, you may comprise the door mirror visor 18 by 2 components.

  Further, in the present embodiment, the door mirror visor 18 is integrally provided with the kick portion 22. Instead of this, the kick part 22 and the door mirror visor 18 may be provided separately, and the kick part 22 may be assembled to the door mirror visor 18. Thereby, the vibration of the mirror main body portion 16 due to the air flow can be suppressed by assembling the kick portion 22 to the door mirror visor 18 while using the ready-made door mirror visor 18.

DESCRIPTION OF SYMBOLS 10 Vehicle door mirror apparatus 12 Stay (support member)
18 Door mirror visor (housing member)
20 Mirror 24 Airflow deflection surface 26 First deflection surface 28 Second deflection surface

Claims (3)

A housing member for housing a mirror for visually recognizing the rear of the vehicle;
A support member that is assembled to a vehicle and rotatably supports an inner portion in the vehicle width direction of the housing member;
Provided on the inner side in the vehicle width direction of the outer periphery of the housing member, and deflects the air flow at the inner upper side in the vehicle width direction of the housing member toward the outer side in the vehicle width direction toward the rear of the vehicle. An air flow deflecting surface that deflects the air flow in the lower part in the vehicle width direction as it goes rearward of the vehicle;
A vehicle door mirror device.   The upper part of the air flow deflecting surface is configured by a first deflecting surface that is inclined outward in the vehicle width direction toward the rear of the vehicle, and the lower part of the air flow deflecting surface is inward in the vehicle width direction toward the rear of the vehicle. The vehicle door mirror device according to claim 1, wherein the vehicle door mirror device is configured by a second deflecting surface inclined toward the surface.   The vehicle door mirror device according to claim 2, wherein the air flow deflection surface is formed continuously in the vertical direction.

Images