JPS5824595Y2 - Vehicle mirror device - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a vehicle mirror device.

In particular, the present invention relates to a mirror device in which the attachment between the base and the stay is improved so that the mirror can be reliably dropped for cushioning purposes in an emergency.

This type of mirror device takes into consideration the possibility that the driver's head may hit the device in the event of an abnormality such as a collision, so the protruding part will fall off from the mounting base if a severe external impact force is applied. This is what is needed.

In such a case, if there is an impact of a certain magnitude or more in response to a force from the front, a force from below, a force from an oblique direction, etc., the fall-off action must occur.

In some cases, there are laws and regulations regarding how force is applied and how it is removed.

In the conventional mirror device with a long stay, as shown in FIG.
The spring C is screwed onto the base b, and the spring C is hooked on the engaging portion d of the base b, so that when an external force is applied, the spring C is disengaged by that force and can fall off.

However, with this configuration, if the length of the stay a (more specifically, the length from the fixed part to the spring C to the tip) is long, a horizontal external force P from the front will be applied to the mirror body as shown in Figure 1. As a result, the angle θ between the base b and the stay a increases as shown in Fig. 2, which causes the spring C to disengage.As shown in Fig. 3 A, the length Ll of the stay a becomes shorter. The horizontal force Pc does not cause the above-mentioned inclination as indicated by the arrow, and therefore the inclination shown by the imaginary line in the opening of FIG. 3 does not occur.

On the contrary, the external force Pc becomes a force P1 that pushes the base b backward.

That is, with this configuration, the force in the P1 direction causes the stay a to move in the P1 direction along the base b, so that the spring C acts like a wedge action at the A part of the opening in Figure 3. Therefore, the conventional drop-off type structure as shown in FIG. 1 cannot be applied to such a stay a whose length Ll is short.

Furthermore, the conventional example shown in FIG. 1 has a problem in that it is difficult to fall off even when an external force is applied from either the left or right side.

This is because θ in FIG. 2 does not increase with a force in this direction, that is, in the direction from the surface of the paper toward the back of the paper in FIG. 1, or in the opposite direction.

Furthermore, with this conventional configuration, there is a problem in that the stay a does not fall off when a strong external force is applied in the direction in which the stay a rotates.

This is because θ in FIG. 2 does not increase even with such rotational force.

In view of the above circumstances, the present invention is capable of falling off in response to external forces from any direction, including from the front, left and right sides, and
The present invention provides a vehicle mirror device that can fall off even when an external impact force is applied in the direction in which the stay rotates, thereby ensuring safety in an emergency. In view of the fact that some countries have standards that allow the product to come off with respect to forces from 45 degrees to the left and right, care should also be taken regarding the structure of the product to allow it to come off with respect to forces from these directions.

An example of implementing the present invention will be described below with reference to the drawings.

In the illustrated example, the present invention is applied to a window bonding type inside mirror, that is, a mirror device of the type in which the base is bonded to the window surface.

As shown in FIG. 4, the present invention comprises a mirror body 1, a stay 2 that tiltably supports the mirror body, and a base 4 that is fixed to a base 3 and supports the stay 2. .

In this example, the base body 3 is the front window of an automobile as described above, and the base 4 is adhered to the inner surface of the base body 3.

Further, the mirror body portion 1 of the stay 2 is supported by a ball joint 21.

According to the present invention, the stay 2 and base 4 are assembled using the elastic member 6.

This elastic member 6 is fixed to the stay 2, and one end thereof forms an engaging piece 62.
is adapted to be caught on an engaging portion 43 formed on the base 4.

On the other hand, the other end of the elastic member 6 serves as a positioning part 63, which comes into contact with the slippage prevention part 44 of the base 4. In this way, the elastic member 6 normally serves as a positioning part 63 for assembling the stay 2 and the base 4. It serves the function of attaching.

However, if an external impact force is applied in an emergency, the engagement piece 62
Or the positioning part 63 may come off the base 4 and the stay 2
This makes it possible for the material to fall off.

More specifically, the elastic member 6 of this example is constituted by a leaf spring member shown in FIGS. 5 and 6.

That is, this elastic member 6 has an engagement piece 62 bent to open forward at the rear edge of a plate-shaped plane part 61, and a positioning piece 62 bent slightly downward at the front edge. A portion 63 is formed.

Further, projections 64, 64 are formed approximately at the center of both sides, and a bolt insertion member 66 is firmly fixed to the hole 65 at the center by caulking.

This bolt member 66 is inserted into the bolt insertion hole 23 of the stay 2, and the elastic member 6 is attached to the stay 2. At the same time, the positioning part 63 is engaged with the displacement prevention part 44 provided by drilling a V-shape corresponding to the base 4, thereby completing the assembly.

(See also FIGS. 7 and 8 showing the base 4) By assembling in this way, the elastic member 6 fixed to the stay 2
The stay 2 and the base 4 are attached to the base 4 with no front-to-back displacement, so the stay 2 and the base 4 can be reliably assembled in normal times.

At this time, there is a space as shown in FIG. 4 between the engaging portion 43 of the base and the rear inner wall of the base.

Furthermore, when a large external force is applied to the mirror body 1 in an emergency such as an accident, the stay 2 will surely fall off from the base 4 and provide a buffering effect, thereby preventing injury to the driver. be.

That is, when a force is applied from the front (in the direction of arrow Pc in FIG. 4), the stay 2 tends to displace in the direction of arrow P1 as shown in FIG. 4, but when such displacement occurs, the elastic member 6
The engaging piece 62 also moves in this direction, and as a result, the engaging piece 62 comes out of engagement with the engaging part 43 of the base 4, as shown by the arrow in the figure, and as a result, the stay 2 moves away from the base 4. It will drop out from 4 onwards.

In the illustrated example, when the engagement is released, the elastic member 6 is slightly lifted upward.

The force Pc from diagonally forward (45° direction, etc.) causes dropout in exactly the same way.

Furthermore, by embodying the present invention as described below, it is possible to ensure that the device does not come off even when subjected to forces from the left and right sides.

In other words, when attaching the stay 2 to the base 4 in the illustrated example, the surface 22 has a first chamfered portion 9 51 that is inclined backward, and second and third chamfered portions that are inclined both left and right. 52.53
and form.

Since these chamfered parts 51, 52, 53 are provided so as to be inclined downward, a convex part 24 protruding toward the center is formed by each chamfered part 51, 52, 53 (
(See Figures 9 to 11).

When attaching the stay 2 to the base 4, on the upper surface forming the surface 22,
The surface where the bolt insertion hole 23 is located is used as a convex portion (plateau surface portion) 24, and a first chamfered portion 51 slopes downwardly backward from the convex portion (plateau surface portion) 24, and second and third chamfered portions 52 slope downwardly at the same angle to the left and right.
53 is formed.

Furthermore, a chamfered portion 54 is also formed on the front surface.

The base 4 has a shape corresponding to this stay 2.

That is, the base 4 has a cross section as shown in FIG. 7, and the stay 4 shown in FIG. 9 is attached to this lower surface from below. A first slope 71 that fits the first chamfer 51, and second slopes 71 that fit the left and right second and third chamfers 52 and 53, respectively.
, third slopes 72° and 73 are formed.

As shown in FIG. 8, the central part of the base 4 is an opening 41 in which the elastic member 6 is positioned, so that the first slope 7 is formed as a result.
1 has a shape that is separated into left and right sides.

In the figure, reference numeral 43 denotes an engaging portion that serves to hook the elastic member 6 as described above, and is provided across the opening 41.

The first to third chamfered portions 51, 52, 53 of the stay 2 are fitted to the respective slopes 71, 72, 73 of the base 4, and are attached to the base. This ensures that the stay 2 will fall off against the force of .

First, when an external force Pc is applied from the front as shown in Fig. 12, the stay 2 tries to shift in the P1 direction, but at this time the first
Since the chamfered portion 51 conforms to the first slope 71 of the base 4, it must be displaced by sliding along this slope 71 in order to shift in the P direction.

Therefore, the stay 2 is forcibly moved downward, that is, in the P2 direction.

On the other hand, the engaging piece portion 62 of the elastic member 6 is disengaged from the engaging portion 43 of the base 4 in the direction of the arrow by the strong external force as described above, and the positioning portion 63 is also disengaged from the slippage prevention portion 44 .

Moreover, since the stay 2 is displaced downward (in the P2 direction), the elastic member 6 does not hit the base 4 and moves the stay 2 downward (in the P2 direction).
falls off base 4.

Next, a case will be described in which an external Pr is applied from the right as shown in FIG.

At this time as well, the second chamfered portion 52 is displaced along the second slope 72, and as a result, the stay 2 is displaced downward, that is, in the P2 direction.

At this time as well, the force in the P2 direction causes the elastic member 6 to move toward the base 4.
Since the engagement with the base 4 is released, the stay 2 falls off from the base 4.

Exactly the same effect is achieved with an external force from the left.

Similar effects can be achieved with respect to external forces applied diagonally from the front, for example, at a 45° diagonal, and from diagonally from the sides, for example, from the left and right at 45°.

Furthermore, with the above configuration, even when force is applied in the direction of rotating the stay 2, the stay can be prevented from falling off.

Assume now that the stay 2 is rotated by an angle θ2 with respect to the base 4 due to an external impact force as shown in FIG.

Such rotation is represented by an arrow D' in FIG. 12, which is a side view, and FIG. 13, which corresponds to a sectional view taken along line 12 in FIG.

In order for the stay 2 to rotate in this manner, the convex portion 24 must rotate on the corresponding surface 42 of the base 4. However, in order for the convex portion 24 to rotate, the first chamfer that slopes backward from there. 51 must rotate relative to the corresponding surface 42, and in order for such rotation to occur, the first chamfer 51 must rotate against the first slope 7 of the base 4.
You have to get out of the box and overcome that.

Therefore, due to this rotation, the surface 22 of the stay 2 and the surface 42 of the base 4 are displaced from each other, and a gap is inevitably created between them.

This is because the chamfered portion 51 climbs over the slope 71 and the fit is misaligned.

The generation of such a gap creates a force that pushes the stay 2 downward, that is, in the direction of arrow P2 in FIGS. 12 and 13.

Therefore, the stay 2 is forcibly moved downward, that is, in the P2 direction, and the stay falls off in exactly the same manner as described above.

In the illustrated example, the stay 2 is attached to the base 4 by making the surface 22 asymmetrical with respect to the rotation of the stay 2, and by shifting the bolt insertion hole 23, which is the center of rotation, from the center of the convex portion 24, which promotes the generation of gaps due to rotation. It is being

(See Fig. 10) As mentioned above, in the vehicle mirror device of the present invention, the elastic member fixed to the stay and assembling the stay to the base has one end thereof serving as an engagement piece. The part is caught in the engaging part formed on the base, and the positioning part on the other end comes into contact with the slippage prevention part of the base, which serves to assemble the stay and base in normal times, and prevents external impact force in case of emergency. The structure is characterized in that the engaging piece or the positioning part comes off from the base and the stay can fall off when the stay is applied, so it is securely assembled in normal times and This has the effect of being able to fall off against external force, and ensuring complete safety in the event of an emergency such as an accident where a severe impact external force is applied.

In FIGS. 9 and 10, reference numeral 25 indicates a positioning protrusion, and a corresponding recess is provided in the base 4 to accommodate it. If this is provided, the elastic member 6, which is a means for intervening attachment, is provided. It is necessary to provide such a way as to prevent the material from falling off.

Naturally, the invention is not limited to the illustrated embodiment.

[Brief explanation of the drawing]

1 to 3 are partially sectional side views illustrating a conventional example and its operation, respectively. 4 to 14 show an example of the implementation of the present invention, and FIG.
The figure is a side sectional view, Figure 5 is a plan view of the elastic member, Figure 6 is a sectional view taken along the line ■-■ which corresponds to Figure 5, Figure 7 is a side sectional view of the base, and Figure 8 is Figure 7. Fig. 9 is a partially cross-sectional side view of the stay, Fig. 10 is a view taken from the X direction in Fig. 9.
11 is a sectional view taken along the X[-Xl line in FIG. This corresponds to the ■--money line sectional view in Figure 12. 1... mirror body part, 2... stay, 3...
...Mounting is done on the base (window glass), 4...
・Base, 43...Engagement part, 44...
Slip prevention part, 6...Elastic member, 62...
- Engagement piece part, 63...positioning part.

Claims (1)

[Scope of utility model registration request] A mirror body part, a stay that tiltably supports the mirror body part, and a base that is fixed to a base body and supports the stay, and the stay and the base are assembled by an elastic member fixed to the stay. In the vehicle mirror device, the elastic member has a rear edge thereof formed with an engaging piece portion opening toward the front, and a front edge formed with a positioning portion, and a base with which the elastic member is attached. forming an engaging part that engages the piece and a displacement prevention part that abuts the positioning part;
The elastic member has a rearwardly movable body space between the engaging portion and the rear inner wall of the base, and the engaging piece portion of the elastic member is engaged with the retaining portion of the base, and the positioning portion is The stay and the base are integrally assembled by coming into contact with the anti-slip portion of the base, and when an external impact force is applied from the front of the mirror body, the elastic member shifts backward relative to the base and the retaining piece engages the base. A mirror device for a vehicle, characterized in that the mirror device is configured to allow the stay to fall off when it comes off.