JPH1059076A - Under mirror device for automobile - Google Patents

Abstract

(57) [Summary] To provide an under mirror with a preferable posture for a storage position and a preferable posture for a use position. A drive arm (5) directly connected to an output shaft (4) of an electric motor (3) is connected to a mirror housing (8) via a ball joint (10), and is used for a drive device on the deflector (1) side. The driven arm (6) pivotally supported by the housing (20) is provided with two axes (12, 14) orthogonal to each other.
To the mirror housing (8) via a connecting device (11) having Both arms (5, 6) are arranged in parallel with a step.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an under-mirror device for a vehicle used to confirm the safety of a lower rear portion of the vehicle from the driver's seat when the vehicle retreats.

[0002]

2. Description of the Related Art It is indispensable to confirm safety immediately after a vehicle is retracted, especially in the case of box-type vehicles such as buses and wagons, because it is difficult to see the lower rear of the vehicle from the driver's seat. The mirror device is indispensable. A typical under-mirror device has a structure in which a stay is set up on the rear part of the roof of a vehicle, a downward convex mirror is fixed to the tip of the stay, and an image of the convex mirror is viewed through a rear-view mirror in the driver's seat. In this conventional example, since it is a fixed type, it cannot be stored during normal running, which increases the rear visibility and is not preferable from the viewpoint of appearance.

[0003] Therefore, the under-mirror device is always stored in a rear spoiler or a deflector, and only when the vehicle retreats, the under-mirror device is protruded from the deflector and moved to a use position. One example is disclosed in JP-A-1-127430. In this conventional example, a pulley and a belt are combined, and the other belt is made to move in an arc around the other belt. However, the surface of the mirror simply moves linearly from the storage position to the use position. There is no change in the relative relationship between the surface and the car. In other words, once the position of the mirror suitable for viewing the lower rear of the car is determined, the mirror will be stored in the deflector as it is, so the appearance of the mirror housing and the deflector will not match, and the appearance will not be good, In addition, if the appearance is improved, the design of the deflector is restricted by the mirror housing, and the degree of freedom of the design is lost.

Further, in the conventional example, since the mirror housing is stopped at the use position depending on the number of revolutions of the electric motor and the rotation angle of the pulley, the use position is not fixed, and there is a problem that the variation occurs.

Therefore, an object of the present invention is to solve the above-mentioned disadvantages of the prior art.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a mirror housing having a drive arm and a driven arm having a different length from the drive arm. Technical means for connecting to the member and changing the orientation of the under mirror at the storage position and the orientation at the use position is basically adopted. Further, the present invention provides a first stopper for restricting the rotation of the driven arm and a second stopper for resisting the forcible force of the drive arm toward the vehicle body, so that the use position for the mirror housing is not varied. , Always stay in a fixed position.

More specifically, the present invention relates to a driving device supported by a bracket fixed to a roof rear side member of an automobile, a driving arm having one end rotatably connected to an output shaft of the driving device, and a bracket. One end is rotatably coupled to the driven arm and is parallel to the drive arm and has a length different from that of the driven arm. A mirror housing for holding an under mirror connected via a connecting device rotatable with respect to the driven housing or a part of a driven arm at a protruding position of the mirror housing and restricting movement of the arm in a rotating direction; An under-mirror device for an automobile, comprising: a first stopper; and a second stopper for restricting movement of the drive arm in a direction orthogonal to the rotation direction.

[0008] Preferably, the drive arm is in the shape of a letter in plan view and its length is longer than the length of the driven arm, and both arms are arranged with a step. The first stopper comprises a pin implanted in the bracket, and the side surface of the driven arm can freely contact the first stopper via the cushion material, and the second stopper can freely contact the flat surface of the drive arm. It consists of various members.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A bracket 2 is mounted on a roof rear side member of an automobile, for example, a deflector 1 or a rear spoiler, and the bracket 2 supports an electric motor 3 and a drive unit housing 20 with a reduction gear. On the output shaft 4 of the electric motor 3, a drive arm 5 shaped like a letter in a plan view is fixed. At the end of the drive device housing 20,
The driven arm 6 having a length substantially shorter than the length of the driving arm 5 is made substantially linear, and is rotatably fixed. The two arms 5 and 6 are arranged in a substantially parallel relationship (when viewed from the rear of the vehicle... See FIG. 1), but are provided with a step (as viewed from the side of the vehicle... FIG. 2). Both arms 5 and 6 rotate in a plane along the rear surface of the vehicle.

A drive arm 5 is mounted on a bracket 9 of a mirror housing 8 having an under mirror 7 via a universal joint, preferably a ball joint 10.
Attach the tip of. As a result, when the reversible electric motor 3 is operated, the mirror housing 8 moves along the locus determined by the drive arm 5. The tip of the driven arm 6 is supported by the bracket 9 via the connecting device 11. As shown in FIG. 3, the connecting device 11 includes a bolt 12 that is orthogonal to the plane of the driven arm 6, a hinge 13 that receives the bolt 12, a hinge 13 that is rotatably mounted on the bracket 9, and that is orthogonal to the bolt 12. The driven arm 6 rotates around the axis of the bolt 12, and the bolt 12 together with the hinge 13
It rotates around the axis of the shaft 14. In other words, the mirror housing 8 can rotate around the axis of the shaft 14 and the bolt 12.

As shown in FIG. 1, a pin with a rubber ring is implanted at one end of the drive device housing 20 to serve as a first stopper 15. The first stopper 15 can freely contact the side surface of the driven arm 6, determines the use position of the mirror housing 8, and stops the power supply to the electric motor 3 by the contact between the first stopper 15 and the driven arm 6. . A second stopper 16 with a cushion material is provided in a suitable position of the drive device housing 20 in a washer shape to restrict the movement of the drive arm 5 toward the rear surface of the vehicle due to an external force.

In the storage position of the under mirror indicated by an arrow A in FIGS. 1 and 2, the under mirror 7 is directed almost directly below,
The mirror housing 8 is located under the deflector 1. When the electric motor 3 is energized, the drive arm 5 follows the rotation of the output shaft 4 and moves from above to below in a plane along the rear surface of the vehicle. The driven arm 6 also descends following the movement of the drive arm 5, but the driven arm 6 is connected to the mirror housing 8 via a coupling device 11 having two axes that are shorter and orthogonal to the drive arm 5. Therefore, the mirror housing 8 changes its attitude little by little as the driven arm 6 descends, and makes the under mirror 7 diagonally forward and downward at the use position. This use position is detected by the contact between the first stopper 15 and the driven arm 6, and the power supply to the electric motor 3 is stopped. The external force to the mirror housing 8 in the neutral position is applied to the coupling device 11 and the ball joint 1.
0, speed reducer resists. For example, the second stopper 1 is not affected by an external force in a form hanging on the mirror housing 8.
6 resists this. The energization of the electric motor 3 in the reverse direction causes the mirror housing 8 to move in the reverse direction, ie, upward, along the above-described trajectory, and to move the mirror housing 8 from the use position to the storage position.

As is apparent from FIG. 1, when the vehicle is viewed from the rear to the front, the use position of the mirror housing 8 is shifted toward the electric motor 3 from the storage position and slightly shifted rearward as viewed in FIG. It can be seen that the mirror housing 8 moves three-dimensionally and moves from directly below the deflector 1 to a preferred use position. The shapes of the arms 5 and 6 allow such movement.

[Brief description of the drawings]

FIG. 1 is a view of an example of the present invention as viewed from the rear of a vehicle.

FIG. 2 is a side view of a vehicle according to an example of the present invention.

FIG. 3 is a sectional view of a coupling device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Deflector 2 Bracket 3 Electric motor 4 Output shaft 5 Drive arm 6 Follower arm 7 Under mirror 8 Mirror housing 10 Ball joint 11 Connecting device 12 Bolt 13 Hinge 14 Shaft 15, 16 Stopper

Claims (7)

[Claims] 1. A driving device supported by a bracket fixed to a roof rear side member of an automobile, a driving arm having one end rotatably connected to an output shaft of the driving device, and one end rotatably connected to a bracket. Driven arm that is parallel to the drive arm and has a different length from the drive arm,
A mirror housing for holding an under-mirror coupled via a drive arm and a universal joint and a coupling device rotatable with respect to two axes orthogonal to the driven arm, and driven or driven at a projecting position of the mirror housing An under mirror for vehicles including a first stopper that abuts a part of an arm and regulates movement of the arm in a rotation direction, and a second stopper that regulates movement of the drive arm in a direction perpendicular to the rotation direction. apparatus. 2. The under-mirror device for an automobile according to claim 1, wherein the drive arm has a U-shape in plan view and has a length longer than a length of the driven arm, and both arms are arranged with a step. 3. The under-mirror device for an automobile according to claim 2, wherein the universal joint is a ball joint. 4. A hinge having a coupling device fixed to a bolt disposed so as to be orthogonal to the plane of the driven arm, and a shutter which is orthogonal to the bolt and rotatably holds the hinge to the mirror housing. The vehicle under-mirror device according to claim 1, comprising: 5. The under-mirror device for an automobile according to claim 1, wherein the rear part of the roof of the automobile is a deflector, and a storage position of the mirror housing is immediately below the deflector. 6. A first stopper comprising a pin implanted in a bracket, a side surface of the driven arm is able to abut on the first stopper via a cushion material, and a second stopper is provided on a flat surface of the drive arm. 2. The under-mirror device for an automobile according to claim 1, wherein the under-mirror device is made of a member that can contact the surface. 7. An under-car for an automobile according to claim 5, wherein the under-mirror is directly downward at the storage position, the under-mirror is obliquely forward and downward at the use position, and both arms rotate in a plane along the rear surface of the automobile. Mirror device.