JPS5820419Y2 - Automotive auxiliary room mirror device - Google Patents

Description

[Detailed explanation of the invention] This invention is used by attaching it to an existing car rearview mirror.
In order to prevent the driver from being dazzled by the reflected light from the cars behind, the existing car room □
The upper part of the reflective member is supported as a fulcrum by a support frame provided with an attachment part to the mirror, and the lower part of the reflective member is provided on the support frame so as to be able to angle the reflective member back and forth about the fulcrum. Regarding the improvement of the above-mentioned angle switching mechanism of the auxiliary room mirror device of the type that connects the angle switching mechanism, the objective is to first turn the knob provided for changing the angle of the reflective member by hand. Just by moving it, the spring force will automatically change the angle to a predetermined angle position instantly, thereby ensuring safe operability when driving a car.
It is also intended to prevent the force applied during the angle-changing operation from spreading to the existing room mirror, and to prevent the relative relationship between the □ mirror and the line of sight from being disrupted due to movement of the mirror.

The details of the embodiment will be described below with reference to the drawings.

The above-mentioned support frame is made up of two members: a support frame A having a length in the lateral direction that is fitted and attached to an existing rearview mirror of a car, and a wide reflective member B that is supported by the support frame A so as to be able to freely change its angle. A has a U-shaped side cross section with open left and right sides as well as the front, and a pair of upper and lower sandwiching parts 1 and 2 that sandwich the upper and lower ends of the existing rearview mirror are provided laterally opposite each other on the rear closing wall. .

The upper sandwiching portion 1 is formed of two fixed sandwiching pieces 1a that are integral with the support frame A and are separated from each other in the left and right directions, and the lower sandwiching portion 2 is also formed of two fixed sandwiching pieces 1a that are separated from each other in the left and right directions. Piece 1b
The lower clamping pieces 1b are formed by side-mounted levers, and their vertical rods are slidably fitted into vertical grooves 3 provided on the inner wall of the back side of the support frame A. At the same time, the horizontal rod part is made to protrude outward from the back surface of the support frame so as to face the fixed sandwiching piece 1a, and one end of the lower sandwiching piece 1b is attached to the support frame A. The other ends of the coil springs 4 fixed to the two are connected to each other, so that the sandwiching pieces 1b are always moved upward and biased independently in the sandwiching direction.

Next, the reflecting member B is composed of a wide-angle mirror plate 6 with an appropriate radius of curvature inside a horizontally long lens frame 5, and a transparent glass plate 7 fully stretched on the front surface of the wide-angle mirror plate 6. The frame 5 is fitted into the inner U-shaped part of the support frame A, and its both sides are extended to the outside, and a fulcrum shaft 8 is provided on the left and right sides of the upper side of the mirror frame 5, and this is attached to the upper plate of the support frame A. Respective inversions are fitted in the provided hole 9 so as to be able to swing, and the left and right sides of the lower surface of the lower edge of the lens frame 5 are elastically mounted on the lower plate of the support frame A between the lower plate and the lower surface of the lens frame. A projecting piece 11 is provided at the center of the lower back surface of the lens frame 5, and an elongated hole 1 is formed in this projecting piece 11.
2 is provided, and an eccentric shaft portion 14 provided in the middle of the rotary operation shaft 13 is inserted into the hole 12.

The rotary operation shaft 13 has its upper and lower ends coaxially supported on the upper and lower walls of the support frame A, and the edge of one side of the hole 12 corresponds to the front pushing wall 12a in the claims. The other side hole edge corresponding to this corresponds to the rear pushing wall 12b, so that the eccentric shaft portion 14 comes into contact with the pushing walls 12a and 12b with a predetermined play.

In the figure, reference numeral 15 denotes a lever-shaped operating knob provided on the operating shaft 13.

Further, the reversing coil spring 10 is hung diagonally on a protrusion 16 provided on the lens frame 5 and a protrusion 17 provided on the support frame A.
This causes it to be reversed.

In addition, relatively thick pressure-welding rubber 1 is attached to the sandwiching pieces 1a and 1b.
8 is stretched.

The transparent glass plate 7 constituting the reflecting member B is a well-known glass plate that is arranged slightly obliquely to the wide-angle mirror plate 6 and has a radius of curvature substantially equal to that of the wide-angle mirror plate 6, as shown in the figure.

Next, the operation will be described.

As shown in Fig. 2, when this device is fitted and clamped to the existing rearview mirror a between the upper and lower sandwiching parts 1 and 2, the lower sandwiching part 2 is biased to move elastically in the sandwiching direction. Needless to say, this device will be fixed to the existing rearview mirror.

To switch the reflective member B, use the knob 15 to switch the operating shaft 1.
3, the eccentric shaft portion 14 of the operating shaft 13 moves inside the hole 12 of the protruding piece 11 protruding from the rear surface of the lower part of the reflecting member B, thereby pushing the front and rear pushing walls 12a.

12b, and when the pushing wall 12a or 12b is pressed by this movement, the reflecting member B starts to tilt or stand up,
As a result, the reversing coil spring 10 begins to bend around the protrusion 17, and the degree of bending between the protrusion 16 and the protrusion 17 increases.
When it passes over the perpendicular line of the comrades, the reversing coil spring 10 rapidly reverses, and the reflecting member automatically tilts the remaining amount by the reversing force and the force of the coupling spring.
This means that the line of sight has been switched to either out of line of sight or on line of sight.

Further, the spring tilting of the reflecting member is caused by the eccentric shaft 14 being moved by the pushing wall 12a.
.

12b with a predetermined play.

Since the present invention is constructed as described above, the angle of the reflecting member can be changed by first turning the knob by a small amount (α angle in Figure 5), and then the force of the coil spring itself is applied to the reflecting member. As a result, the reflecting member is automatically switched, so that the switching operation can be performed safely even when the vehicle is running.

In addition, since the upper and lower ends of the rotary operation shaft are supported on the support frame, the force applied to the rotary operation shaft is prevented from spreading to the existing rearview mirror, and the movement of the rearview mirror reduces the distance between the mirror and the line of sight. This has excellent practical effects such as being able to prevent collapse of relative relationships.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view, Fig. 2 is a partially cutaway plan view of the tethered state, Fig. 3 is a cross-sectional view of the above ■ - ■, Fig. 4 is a cross-sectional view along the line - ■, Fig. 5 is a partial plan view. a...Existing room mirror, A...Support frame, B...Reflection member, 10...Coil spring, 13...Rotation operation Axis, 14...
...Eccentric shaft portion, 12a...Front pushing wall, 1
2b... Rear push wall.

Claims (1)

[Scope of utility model registration request] The upper part of the reflective member is supported as a fulcrum by a support frame equipped with an attachment part for an existing automobile rearview mirror, and the lower part of the reflective member is supported so that the reflective member can be angled back and forth about the fulcrum. In an auxiliary room mirror device of the type that connects an angle switching mechanism provided on a frame, the angle switching mechanism has a rotary operating shaft whose upper and lower ends are supported on the support frame and whose lower end is provided with an operating knob that protrudes outside the support frame. An eccentric shaft part is provided in the middle,
This eccentric shaft portion is interposed between the front and rear pushing walls provided at the lower rear section of the reflecting member so that all the predetermined play is in contact with the pushing wall, and on the other hand, the reflecting member is An automobile auxiliary device characterized in that one end of a reversing coil spring is connected to a support frame, the other end of which is flexed and displaced so that the reflecting member is moved to a predetermined position and angularly moved by slight pressure from a pushing wall. Room mirror device.