JPH034594Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a mounting structure for a back mirror, particularly a door mirror.

[Prior Art] A door mirror of a vehicle is rotatably mounted and supported elastically by a spring on a door, which is a vehicle body, for the purpose of protecting against external impact.

Specifically, when a spring is stretched between a base fixed to the door and a housing housing the mirror body, the housing is pressed against the base at a certain angle, and an external force is applied to the housing. , the housing is attached to rotate relative to the base against the elastic force of the spring.

By the way, the above-mentioned spring has a relatively large tensile force because it is necessary for the housing to always maintain a constant position and not vibrate relative to the vehicle body even when the vehicle is running. . Therefore, there are disadvantages such as the risk of deformation of the housing, which is usually molded from synthetic resin. Conventionally, in order to prevent such problems, a support board that receives the tensile force of the spring is fixedly installed in the housing, and the end of the support board is brought into contact with the side of the base of the housing.

[Problem to be solved by the invention] In the above conventional technology, since a spring is stretched between the base and the housing, when the housing rotates in the longitudinal direction of the vehicle with respect to the base due to an external force, the spring When the spring is tilted greatly with respect to its longitudinal direction (axial direction) and the angle of inclination becomes large, one end of the spring is supported by the base and the other end is supported by the housing, so a part of the spring, or the spring and the base If the connecting member, etc. that connects the
This has the disadvantage of creating resistance when the housing rotates.

Furthermore, for the above reasons, it is difficult to secure a sufficient rotation angle range for the housing, and as the rotation angle increases, the spring or connecting member approaches the rotation fulcrum, making it difficult for the housing to return. There are also problems.

The present invention was developed to solve these problems, and its purpose is to ensure that the housing rotates smoothly relative to the base, has excellent restoring action, and
To provide a mounting structure for a rear view mirror device that can secure a sufficient rotation range of a housing.

[Means for Solving the Problems] A means for solving the above problems is to fix a support substrate in a housing that accommodates a mirror body, and to attach one end of the spring to the tip side of the housing of the support substrate. The other end of the spring is supported by the base via an intermediate member and a link in series, and the intermediate member has a length in the vertical direction within the housing, and the other end of the spring is supported by the base through an intermediate member and a link in series. A guide plate is formed on the base end side of the housing and is spaced apart in the front-rear direction of the housing (rotation direction of the housing) and is spaced apart vertically, and the intermediate member is vertically oriented between the front and rear of the guide plate. ,
It is arranged so that it can be slid in the left and right direction.

[Operation by the above means] According to the above means, the spring connecting the base and the support board on the housing side in series and the intermediate member interposed between the links are held in the gap between the guide plates spaced apart in the longitudinal direction of the housing. Since the guide plates are spaced apart from each other vertically, falling and twisting in the front and back directions are restricted, and on the other hand,
Since the intermediate member is slidable in the left-right direction of the support substrate, that is, the housing, the spring expands and contracts.

[Example] Next, an example of the present invention will be described in detail with reference to the attached drawings.

Fig. 1 is a front view of the back mirror device with the mirror main body removed and a part of the base cut away, Fig. 2 is a cross-sectional plan view of the same, and Fig. 3 is a perspective view showing an example of the support substrate and spring. It is.

1 is a rearview mirror device, which is a door mirror attached to the side of the vehicle door;
has a base 2 that is fixed to the vehicle body, that is, the side surface of the door, and the base 2 is made of light alloy or the like, and the outer part of the base 2 on the vehicle body side (outward in the right-hand direction of the vehicle body)
A separate housing 3 is attached to 2a.

The housing 3 is made of synthetic resin and is formed in the shape of an oblong case with an open front (rear of the vehicle body).
Its proximal end (base side end) 3a is attached to the outer part 2a of the
are pressed together elastically. Base end 3a of housing 3
The attachment of the outer part 2a of the base 2 is as shown in FIG. , 2b are provided, and on the other hand, engaging protrusions 3c, 3c are provided at the front and rear of the portion extending in the distal direction of the opening 5 of the base end 3a of the housing 3, respectively, and these 2b, 3c are engaged, The engaging portions 2b and 3c are elastically pressed into engagement with each other due to the tensile force of the spring. In this manner, the housing 3 is attached to the base 2 by the engaging portions 2b and 3c, and the openings 4 and 5 of the base 2 and the housing 3 are close to each other and communicate with each other.

Therefore, under normal conditions when no external force is acting on the housing 3, the housing 3 is held in the position shown by the solid line in Fig. 2, but the housing 3 is held in the longitudinal direction of the vehicle, that is, in the vertical direction in Fig. 2 (the upper part in the figure is the position of the vehicle body). If an external force is applied to the rear (the lower part is the front of the vehicle body), the position shown by the imaginary line, 3-
1, 3-2, and 3-3, and the rotation is performed using the engaging portion on the rotating side of the above-mentioned front and rear engaging portions 2b, 3c as a fulcrum. In the embodiment, a concave-convex engagement is used, but a hinge connection may also be adopted.

Next, the main parts of the mounting structure will be explained with reference to FIG.

A support substrate 6 is fixed within the housing 3 described above. Specifically, screws 8 are attached to a plurality of support columns 7 integrally protruding from the bottom 3b of the housing 3 at the front of the vehicle body.
Attach and secure with... This support board 6 has a size that covers almost the entire surface of the bottom 3b of the housing, and is integrally formed with a press molded steel plate or the like so as to be able to sufficiently withstand the tensile force of the supporting spring. A substantially rectangular intermediate plate portion 10 for mounting and supporting the motor unit 9 is formed in the intermediate portion of the support substrate 6.

On the base 2 side of this plate portion 10, front guide plate portions 11, 11 are integrally formed and extended.
As shown in FIG. 3, these front guide plate portions 11, 11 are provided in two parallel configurations separated from each other in the left and right directions (in the vertical direction of the housing 3 in the installed state) with a long gap S in the center in the figure. Moreover, it is provided so as to be gently inclined downward in FIG. 3 (in the attached state, toward the front of the housing, toward the bottom 3b of the housing). The front guide plate parts 11, 11 have a function of connecting a spring to be described later and guiding the intermediate member 33, and also have the function of guiding the intermediate member 33.
As described above, a space S is formed between the ends 11, and a link 39, which will be described later, is inserted through the space S.

In the embodiment, each guide plate portion 1
Abutment portions 11a, 11a are integrally formed at the tip portions of 1 and 11 by bending them at a substantially right angle toward the front of the vehicle (downward in FIG. 3). These contact parts 11a, 11
a is brought into contact with the periphery of the opening 5 of the partition wall 5a provided with the above-mentioned opening 5 of the base end 3a of the housing 3. That is, a partition wall 5a is provided on the base end side of the bottom portion 3b in a direction perpendicular thereto, and this partition wall 5a
The opening 5 is formed in the opening 5 of the partition wall 5a.
Contact portions 11a, 11a are in contact with the vehicle body front side portion of the vehicle body front-rear direction and forward direction contact portion 5b formed on the inner side of the housing at the peripheral portion of the vehicle body.

On the other hand, a step is provided at the end of the intermediate plate portion 10 of the support substrate 6 that corresponds to the front end side of the housing 3 to form a mounting plate portion 12, and the mounting holes 12a, 12a provided therein are inserted with screws 8 as described above. to fix it to the support column 7. Note that the base end side of the support substrate 6 is
front guide plate portion 11 of the intermediate plate portion 10;
It is similarly fixed to the bottom part 3b of the housing 3 through the mounting holes 10a, 10a provided on the 11 side.

Spring guide plate portions 13 and 14 are integrally provided on the left and right sides of the intermediate plate portion 10 in FIG. 3 (in the vertical direction of the housing 3 in the attached state). Spring guide plate parts 13, 14
is the plate portion 1 with respect to the intermediate plate portion 10.
Like 2, it is formed with steps. The portions of the guide plate portions 13 and 14 on the proximal end side of the housing 3 are connected to the front guide plates 11 and 11.
Similarly, it extends toward the base side, and rear guide plates 15 and 16 are formed on the extended portion.

The rear guide plate parts 15 and 16 are arranged on the left and right sides in the figure (up and down direction of the housing in the installed state) as shown in Fig. 3.
The spacing therebetween is larger than the above-mentioned front guide plates 11, 11, and in the vertical direction, the guide plates 15, 16
The front guide plate parts 11, 11 face in between. The rear guide plates 15 and 16 are formed to be slightly inclined upward in FIG. 3 (toward the rear of the vehicle when attached to the housing). Therefore, the rear guide plates 15 and 16 are spaced apart from each other in the longitudinal direction of the vehicle by mutual inclination with respect to the front guide plate parts 11 and 11, and one of the guide plates 11 and 15
and the other guide plate 11, 16, there is a substantially V-shaped 〓 which expands toward the proximal end of the housing 3, respectively.
Intervals S1, S1 will be formed. This distance S1, S1 is the left and right in the figure (top and bottom of the housing 3)
It is opened to the outside, and forms a regulating and guiding section for the intermediate member 33, as will be described later.

Thereafter, abutting portions 17, 18 are formed at the base-side ends of the guide plate portions 15, 16, which are bent at a substantially right angle on the opposite side from the abutting portions 11a, 11a. The contact portions 17 and 18 are connected to the partition wall 5 described above.
As shown in FIG. 2, the abutment part 5b abuts on the rear part of the vehicle around the opening 5 of the abutment part 5b at a distance from the abutment parts 11a, 11a.

Thus, the contact parts 11a, 11a, 17, 18
are spaced apart in the rotating direction of the housing (the longitudinal direction of the vehicle) and spaced apart in the vertical direction, and the housing 3
A partition wall 5a provided in front of the proximal end 3a of the
The contact portions 5b around the opening 5 are spaced apart from each other in the vertical and longitudinal directions (rotation direction). In addition, 19 and 20 are
This is a spring locking portion formed at the tip of the spring guide plates 13 and 14. Also, 21,2
2 is a reinforcing rib formed by bending the edges of the guide plate portions 13 and 14, and 23 is a lightweight hole formed in the intermediate plate portion 10.

The motor unit 9 shown by the imaginary line is attached and fixed to the intermediate plate portion 10 of the support substrate 6,
The central part of the back surface of the mirror main body 26 is swingably supported by a hemispherical joint at the tip of the mirror mounting part 25 formed approximately at the center of the unit 9.
Drive parts 27 and 28 that move in and out by the rotation of a motor are provided on the horizontal side and the vertical upper side, respectively, and the tips of the drive parts 27 and 28 are connected to the mirror body 26.
By connecting the motor unit 9 to the back side of the motor unit 9 with a ball joint so that it can swing freely, the motor unit 9 can be controlled from the outside.
The viewing angle of the mirror body 26 can be arbitrarily adjusted using the mounting part 25 as a fulcrum.

Coil springs 29 and 30 shown in FIG. 3 are placed along the spring guide plate portions 13 and 14 of the support substrate 6 described above. spring 29,
39 has hooks 29a and 30a at one end thereof,
The hooks 29b, 30b at the other ends of the springs 29, 30 are fixed to the above-mentioned locking parts 19, 20 of the support board 6, and the hooks 29b, 30b are bored at both ends 33a, 33b of the U-shaped intermediate member 33. They are locked in the locking holes 34 and 35, respectively.

This intermediate member 33 is made by punching and forming a steel plate material into a U-shape, and is long and wide in the left and right directions in FIG. It has a surface. A hook 37 at one end of the link 39 is locked to the center of the intermediate portion of the intermediate member 33 through a mounting hole 36. The hook 38 at the other end of the link 39 is engaged with the support pin 40 provided inside the base 2, and the support board 6, that is, the housing 3, is pulled and pressed against the base 2, and the housing 3 is brought into contact with the base 2. to provide elastic support.

By the way, the intermediate member 33 is located between the front guide plates 11, 11 and the rear guide plates 15, 16, which are spaced apart in the rotational direction (vehicle longitudinal direction).
A play is inserted between S1 and S1. Connecting member 33
The parts near both ends in the length direction are between S1 and S1.
The link 39 is inserted into the space S. Therefore, the intermediate member 33 has the front and rear guide plates 11, 11, 15, 16, although there is a gap between the upper and lower sides in FIG. 3 (front and rear when attached to the housing).
On the other hand, the supporting board 6 can be slid in the left-right direction in the figure (left-right direction when attached to the housing) by being guided by the gaps S1, S1, and the spring extension movement is smooth without any hindrance. done to.

In the above, when no external force is applied, the housing 3 of the rear view mirror device 1 is pressed against the base 2 by the tensile force of the internally installed springs 29 and 30, and is maintained in the fixed position shown by the solid line in FIG.

In this case, the springs 29, 30, the intermediate member 3
3. The link 39 is located between the front guide plate parts 11, 11 and the rear guide plate parts 15, 16 when viewed from the mirror surface as shown in FIG.
Also, the intermediate member 33 faces between the front and rear guide plates 11, 11, 15, 16, and the portions closer to both ends face between the gaps S1 and S1. In this case, the elastic force of the springs 29, 30 is
17 and 18 are in contact with a plurality of locations on the abutting portion 5b of the housing 3, so that the load applied by the spring to the housing 3 is dispersed without being concentrated on one point.

By the way, when an external force such as an impact acts on the housing 3 at the rear of the vehicle, the imaginary line 3-1 in FIG.
As shown in FIG.
-1, 39-1. In this case, housing 3
As the intermediate member 33 rotates, the intermediate member 33 changes the distance S between the front and rear guide plate parts 11, 11, 15, 16.
1 and S1, and is guided while sliding on the guide plate portions 15 and 16 while stretching against the elastic force of the springs 29 and 30, and is guided in the direction of the base end 3a of the housing 3. Move relative. In this case, the elastic force of the springs 29, 30 increases, but as described above, the plurality of contact parts 11a, 1
1a, 17, 18 are the abutment parts 5 of the housing 3;
Since it is in contact with multiple locations of b, the housing 3
The load applied by the spring to the spring will not be concentrated on one point but will be distributed.

Then, when the housing 3 is rotated to the rear,
The intermediate member 33 includes the springs 29, 30 and the link 3.
9 and is pulled linearly by a tensile force, but the front and rear guide plates 11, 11, 15, 1
Since it is sandwiched between S1 and S1 between 6 and 6, it is regulated by this. When the intermediate member 33 rotates in this direction, the rear guide plate 15,
16 and is slightly inclined in the direction of rotation, the intermediate member 33 is prevented from moving backward, and therefore the springs 29 and 30 are prevented from tilting in this direction. The intermediate member 33 extends approximately linearly, and the rear guide plate 1
5 and 16 to slide in the left and right direction of the housing 3, allowing the spring to extend smoothly.

Therefore, the springs 29 and 30 do not come into contact with the housing 3 during rotation, and since one end of the link 39 is locked to the intermediate member 33, it does not come into contact with the base or the housing.
In this way, the spring expands smoothly during rotation without touching the housing, base, etc., and returns smoothly.

On the other hand, when an external force acts on the housing 3 toward the front of the vehicle, the housing 3 rotates to positions 3-2 and 3-3 in FIG. 2. In this case, the connecting member 33 and the link 39 are connected to the virtual line 33-3, respectively.
It becomes 39-3. As is clear from FIGS. 2 and 5, the spring at position 30-3 and the connecting member at position 33-3 form an angle θ1
Also, the connecting member at position 33-3 and position 39
The link members at -3 are connected at an angle θ2.

In this case as well, as the housing 3 is rotated, the intermediate member 33 is located between the bottoms S1 and S1,
It is guided while sliding on the surfaces of the front guide plate parts 11, 11, and moves relatively toward the base end 3a of the housing 3. In this case too, the spring stretches,
Similar to the above, the elastic force of the springs 29, 30 increases, but similarly to the above, the plurality of contact parts 11a, 1
1a, 17, and 18 come into contact with a plurality of places on the abutting portion 5b around the opening 5 of the partition wall 5a at the base end of the housing 3, and the load applied to the housing 3 side is not concentrated at one point but is dispersed. becomes.

When rotating in this direction, the intermediate member 33 is regulated by the front guide plates 11, 11, and is guided by the front guide plates 11, 11 to slide, thereby ensuring the linear extension movement of the springs 29, 30 and the movement of the intermediate member 33 into the housing 3. To prevent contact, to smoothly rotate the housing 3 forward, and to smoothly return the housing 3.

[Effects of the invention] As is clear from the above, according to the invention, the spring installed between the base and the housing includes an intermediate member and a link, and the intermediate member is
Since it is inserted between the front and rear guide plates provided on the housing base end side of the support board, when an external force acts on the housing and rotates it back and forth, the intermediate member is regulated by the guide plate and springs. It is possible to prevent the spring from tilting in the front-rear direction (rotation direction) within the housing, and to guide and ensure the substantially linear extension movement of the spring. Therefore, it is possible to prevent contact and interference between the spring and the housing when the housing is rotated, and thereby the housing can be rotated smoothly even when an external force is applied to the housing. Since the spring is guided by the connecting member and expands and contracts substantially linearly, there are advantages such as smooth and quick return when external force is released to the housing.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; Fig. 1 is a front view of the back mirror device with the mirror body removed and a part of the base cut away;
The figure is a cross-sectional plan view of the same, and FIG. 3 is a perspective view showing an example of a support substrate and a spring. In the drawing, 1 is the rear mirror device, 2 is the base,
3 is a housing, 6 is a support board, 11, 11, 1
5 and 16 are front and rear guide plates, 26 is a mirror body, 29 and 30 are springs, 33 is an intermediate member, and 39 is a link.

Claims (1)

[Claims for Utility Model Registration] A base fixed to a vehicle body, a housing that engages and supports the proximal end of a housing housing a mirror body on the side of the base, and connects the base and the housing with a spring. In the rear view mirror device, which is rotatable in the longitudinal direction of the vehicle body with respect to the base, a support board is fixedly installed in the housing, and one end of the spring is supported on the distal end side of the housing of the support board. The other end of the spring is supported by the base via an intermediate member and a link in series. The intermediate member has a length in the vertical direction within the housing. A proximal end of the housing of the support substrate. On the side, a guide plate is formed which is spaced apart in the front-rear direction of the housing (rotation direction of the housing), and at least one of the front and rear sides is spaced apart vertically, and the intermediate member is oriented vertically between the front and rear of the guide plate. , a mounting structure for a back mirror device, characterized in that the housing is slidably inserted in the left and right direction.