JPH0378288B2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a visor storage device for a foldable door mirror, and more specifically, a device for storing a visor in which a mirror is tiltably stored with respect to a stay fixed to the outer surface of an automobile door. For folding door mirrors that are rotatably mounted in the normal upright position protruding toward the front and in the retracted position that is tilted backwards or both forward and backward, the rotation operation from the upright position to the retracted position can be easily performed from inside the vehicle. It is something to do.

Conventional technology Conventionally, since the door mirrors of automobiles protrude a large amount from the vehicle body, the visors were made to fall down when they came into contact with an obstacle, and when the car was to be put into a narrow space, the visors were folded down and stored in advance. It has a collapsible structure that allows it to be left in place. In this type of foldable door mirror, a rotary electric visor storage device using a motor has conventionally been provided as a device for moving the visor to the storage position by remote control from inside the vehicle, but it is extremely costly and There are problems in that a motor, a gear rotationally driven by the motor, etc. are installed inside the visor, which requires space, and the structure becomes complicated.

Purpose of the Invention The present invention aims to solve the above-mentioned problems of the conventional art, and provides a folding door mirror with a structure in which the visor is moved to the retracted position using a mechanical method from inside the vehicle, thereby preventing an increase in cost. , to simplify the structure, etc.

Composition of the Invention The present invention has been made to achieve the above-mentioned object, and includes a visor rotation shaft protruding from a stay attached to the outer surface of the door, and a visor rotation hole in which a mirror is tiltably supported on the rotation shaft. In a folding door mirror in which the visor is rotatable at least in the rearward direction about the rotation axis, a rotational force is generated between the stay and the visor on the rotation axis to rotate the visor in the front-back retraction direction. At the same time, a stopper and a moderation plate are installed, each having a moderation engagement portion that overcomes the rotational force of the torsion coil spring and stops the visor in an upright position approximately perpendicular to the door. A moderation device is provided on the side and the visor side, and a mechanical moderation release means for separating the moderation engagement portion is provided, and the moderation release means is connected to a moderation release operation knob provided around the driver's seat. The connected cam plate is connected to a lead cam, and the lead cam is screwed into a lead pipe that is fit into the rotating shaft so as to be able to rise and fall freely, and the lead pipe is engaged with a spring receiving stopper of the torsion coil spring. A driving pin is provided in a protruding manner, and when the moderation release operation knob is operated, the stopper is moved in the direction of reducing the pressing force of the torsion coil spring, weakening the engagement force of the moderation engagement portion and reducing the rotational force of the torsion coil spring. To provide a visor retracting device for a door mirror, characterized in that the visor is made stronger and the visor is rotated to a retracted position.

Embodiments Hereinafter, the present invention will be explained in detail with reference to embodiments shown in the drawings.

In the figure, 1 is a stay, 2 is a visor, 3 is a mirror, and 4 is a door body. The stay 1 is attached to the outer surface of the vehicle body 4 with screws 5, and a support arm 1a extending almost horizontally from the bottom of the stay 1 has a cylindrical rotating shaft 1b formed upward, and is bored in the visor 2. By fitting the rotation hole 2a into the rotation shaft 1b, the visor 2 is rotatably attached to the stay 1, and the stay cover 8 fixed to the stay side end face of the visor slides along the arcuate surface of the stay 1, and the visor 2 is rotated. It rotates from an outwardly protruding upright position shown by a solid line in the figure to a rearwardly collapsed storage position shown by a chain line. A support plate 6 is attached within the visor 2, and a spherical bearing 6a provided on the support plate 6 supports a mirror holder 7 holding the mirror 3 in a freely tiltable manner. 4a is the outer panel of the car body, 4
b is an inner plate, and 4c is an interior material.

A lead pipe 10 and a lead cam 11 are fitted into the rotating shaft 1b, as well as stoppers 12 and 13 on both upper and lower sides for spring receivers, and a torsion coil spring 1.
4 is fitted externally. As shown in the figure, the lead pipe 10 has a female thread 10a formed on its inner circumferential surface, and is fitted so that its outer circumferential surface moves up and down while sliding on the inner surface of the rotating shaft 1b, and extends outward near its upper end. A protruding drive pin 15 is attached, and the drive pin 15 passes through an engagement groove 1d cut out in the rotating shaft 1b and projects outward. The lead pipe 1
A lead cam 11 as shown in the figure is screwed into the inside of the lead pipe.
At the same time, a cam plate 17 as shown is fixed to the fixed shaft portion 11c protruding from the lower end of the cylindrical shaft portion 11a via screws 16, and the cam plate 17 is disposed within the arm 1a of the stay 1. There is. The cam plate 1
The distal end arm portion 18a of the moderation release operating rod 18 is connected to the distal end of the moderation release operating rod 18 via a screw 19, and the operating rod 18 is caused to penetrate the stay 1 and the vehicle body 4 and protrude toward the indoor side around the driver. A moderation release operation knob 20 is attached to the end. The rod 18 is slidably inserted into a guide bolt 21 which is passed through the vehicle body 4 and screwed onto a nut 25, and has a spring receiving portion 18b protruding from a portion within the arm 1a. A return spring 26 is compressed between the stay 1 and the cam plate 17 to bias it. After the cam plate 17, rod 18, and return spring 26 are arranged inside the arm 1a, it is closed with a cover 27.

On the other hand, a moderation plate 22 fixed on the outer circumferential surface of the shaft hole 2a of the visor 2 is fitted onto the outer circumference of the rotation shaft 1b, and a lower stopper 13 is placed above the moderation plate 22 so that the rotation shaft 1b can freely rotate. Moderation engaging portions 22a and 13a are formed between the moderation plate 22 and the stopper 13 to engage with each other in a concave and convex manner, so that the visor 2 is engaged when the visor 2 is in an upright position perpendicular to the vehicle body. Further, an upper stopper 12 is provided on the rotating shaft 1b below the drive pin 15.
A torsion coil spring 14 is fitted between the upper and lower stoppers 12 and 13 so as to be rotatable and slidable.
are intervening. The torsion coil spring 14
are cylindrical locking arm portions 14a and 14b at both ends.
project in opposite directions with respect to the center of the coil, the upper end arm portion 14a is locked to the upper stopper 12, and the lower arm 14b is locked to the moderation plate 22, so that a rotational force is generated between the stay 1 and the visor 2. I try to give. With this configuration, the torsion coil spring 14 has the action of a moment spring that applies a backward rotational force to the visor 2, and the lower stopper 13 is biased downward, so that the detent engagement portion 13a and the detent plate 22
It also serves as a moderating spring that provides a moderating force with the moderating engaging portion 22a. The moderation force W of the moderation engagement part above is the rotational force S of the torsion spring.
It is set larger (W>S).

Further, in order to prevent sudden rotation during rotation, silicone grease having viscous resistance is applied to the opposing sliding surfaces of the support arm 1a, which is a rotation bearing portion, and the visor bottom plate.

Next, to explain the operation of the above device, in the illustrated upright position where the visor 2 protrudes at right angles to the vehicle body 4, the moderation engagement portion 22a of the moderation plate 22 and the moderation engagement portion 13a of the stopper 13 are engaged with each other. and locks the visor 2 in the upright position. From this state, when the operating knob is pulled in the direction of the arrow on the indoor side, the rod 18 is moved to the left in the figure against the spring 26, and the cam plate 17 connected to the arm portion 18a is rotated clockwise in the figure. The lead cam 11 fixed to the cam plate 17 also rotates clockwise, and the lead pipe 10 screwed onto the lead cam 11 is moved upward. When the lead pipe 10 rises, the drive pin 15 moves up within the engagement groove 1d, the torsion coil spring 14 expands, the pressure applied to the lower stopper 13 becomes weaker, and the rotational force becomes stronger. Therefore, the moderation engaging portions 13a and 22a are disengaged, and the arm portion 1 is rotated by the rotational force of the torsion coil spring 14.
The visor 2, which is engaged with the visor 4b, rotates and is rotated to the retracted position shown by the chain line in the figure. During this rotation, since the silicone grease is applied, a brake is applied and the rotation is performed smoothly without sudden rotation. When returning from the retracted position to the standing position, the visor is returned directly by hand.

Effects of the Invention As is clear from the above description, according to the door mirror visor storage device according to the present invention, a torsion coil spring is used, and the torsion coil spring has both the action of a moment spring and a moderation spring, so that By mechanically causing the torsion coil spring through the cam plate and lead cam, the visor can be rotated to the retracted position in order to release the moderation engagement part by generating a rotational force greater than the moderation force, and it is possible to rotate the visor to the retracted position in order to release the moderation engagement part. It has various advantages such as being able to significantly reduce the cost compared to the formula, and having a simple structure that does not take up much space.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway front view showing a first embodiment of the present invention, FIG. 2 is a sectional view taken along line A-A in FIG. 1, and FIG.
The figure is a perspective view of the main part of FIG. 1. 1... Stay, 1a... Arm, 1b... Rotating shaft, 2... Visor, 2a... Rotating hole, 3... Mirror, 4... Vehicle body, 6... Support plate, 7... Mirror holder, 10 ...Lead pipe, 10a...Female thread, 11...Lead cam, 11b...Male thread,
12...Upper stopper, 13...Lower stopper,
13a...Detent engagement part, 14...Torsional coil spring, 14a, 14b...Arm part, 15...
...Drive pin, 17...Cam plate, 18...Rod,
20... Moderation release knob, 26... Return spring, 22... Moderation plate, 22a... Moderation engaging portion.

Claims (1)

[Scope of Claims] 1. A visor rotation shaft 1b is provided protrudingly on a stay 1 attached to the outer surface of the door, and a rotation hole 2a of a visor 2 that supports a mirror 3 in a tiltable manner is fitted into the rotation shaft 1b, and the above-mentioned rotation In the folding door mirror in which the visor 2 is rotatable at least in the rearward direction about the axis 1b, a rotational force is generated between the stay 1 and the visor 2 on the rotation axis 1b, and the visor 2 is rotated in the front-back retraction direction. A torsion coil spring 14 is attached to the torsion coil spring 14 to urge the visor to rotate, and moderation engaging portions 13a and 22a are provided, respectively, to overcome the rotational force of the torsion coil spring 14 and stop the visor 2 at a fixed position in an upright position substantially perpendicular to the door. Ta stoppa 13,
A moderation device including a moderation plate 22 on the stay side is provided, and a mechanical moderation release means for separating the moderation engaging portions 13a, 22a is provided, and the moderation release means is provided around the driver's seat. The cam plate 17 connected to the moderation release operation knob 20 is connected to the lead cam 11, and the lead cam 11 is screwed into the lead pipe 10 that is fitted into the rotary shaft 1b so as to be able to move up and down. A drive pin 15 is provided protrudingly to engage with the spring receiving stopper 12 of the torsion coil spring 14, and when the lead pipe 10 is raised by operating the moderation release operation knob 20, the stopper 12 is also raised by the torsion coil spring 14 to A visor retracting device for a door mirror, characterized in that the rotational force in the retracting direction is stronger than the engagement force between moderation engaging portions 13a and 22a by a recoil spring 14, thereby rotating the visor 2 to the retracted position.