JP2000326828A - Wiper mounting structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To absorb impact at the same time that a wiper pivot moves downward and to reduce impact applied to an object by providing an impact absorbing part making the wiper pivot movable in an axial direction by deformation when prescribed or more load is applied to a holder bracket in the axial direction of the wiper pivot. SOLUTION: When a wiper is operated, a holder bracket 12 has sufficient rigidity and supports a pivot holder 11. For instance, when a vehicle collides with a pedestrian, the pedestrian is jumped up and the pedestrian collides with a wiper pivot 13, axial impact is applied to the pivot holder 11 from an upper side, the hexagonal holder bracket 12 deforms at each bent part 12a, left and right surfaces expand to the outside, and at the same time, the pivot holder 11 moves downward, narrowing space of opposed upper surface 12b and lower surface 12c and impact is absorbed by deformation of the holder bracket 12 at this time. Therefore, impact applied to the pedestrian is reduced by a collision with the wiper pivot 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiper mounting structure, and more particularly to a structure of a wiper pivot mounting portion of a vehicle wiper device.

[0002]

2. Description of the Related Art Conventionally, a wiper device mounted on a vehicle is:
As described in JP-A-8-2444, a wiper arm having one end fixed with a wiper arm for wiping a front window, and the other end connected to a wiper motor via an arm member, a link member, or the like, A plate-shaped base portion having a plurality of stud bolts planted on the outside and a pivot holder rotatably supporting a wiper pivot via a bearing on the inside, and a frame member in the vehicle width direction of a front waist portion of the vehicle body. A structure is employed in which each stat bolt is inserted into a mounting hole formed in a cowl top panel, which is a part of the cowl top panel, and the pivot holder is mounted on the cowl top panel by tightening with a nut.

[0003] As described in Japanese Utility Model Laid-Open Publication No. 3-86873 and Japanese Utility Model Publication No. Hei 8-1-1162, an easy bending portion where the bracket is easily bent is attached to the bracket connecting the pivot holder and the vehicle component. There is a structure in which a structure is provided in which a pivot holder is easily dropped, and a load is not applied to a vehicle component when a vehicle collides and a predetermined load or more is applied to the wiper pivot portion from the front.

[0004]

However, when an impact in the axial direction of the wiper pivot is applied to the wiper pivot in the conventional wiper mounting structure, the impact transmitted from the rigid pivot holder is transmitted to the vehicle body component through the bracket. Although transmitted to a certain cowl top panel, any of the above-described prior art configurations absorbs the impact due to the load from the front of the vehicle body, and does not absorb the impact applied in the axial direction of the wiper pivot. Therefore, for example, when the vehicle collides with the object and thereafter the object collides with the wiper pivot, there has been a problem that the impact applied to the object cannot be reduced.

[0005] The present invention has been made in view of such a problem, and when an object collides in the axial direction of the wiper pivot,
It is an object of the present invention to provide a wiper mounting structure that absorbs an impact while moving a wiper pivot, thereby reducing an impact applied to a collision object.

[0006]

In order to achieve the above object, in the wiper mounting structure of the present invention, a wiper pivot having a wiper arm mounted at one end and a link for driving the wiper arm mounted at the other end; A pivot holder for pivotally supporting the wiper pivot, and a holder bracket for fixing the pivot holder to a vehicle body component. The wiper pivot deforms when a predetermined load or more is applied to the holder bracket in the axial direction of the wiper pivot. Is provided with an impact absorbing portion which makes the member movable in the axial direction. Thus, when an object collides in the axial direction of the wiper pivot, the shock is absorbed at the same time that the wiper pivot moves downward due to the deformation at the bent portion of the holder bracket, and the impact applied to the object can be reduced.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. First, a first embodiment will be described. In FIG. 1, a cowl 1 is configured such that a cowl top outer 2 and a cowl top inner 3 are vertically overlapped to have a closed cross-sectional structure. The lower end of the windshield glass 4 is firmly adhered and fixed to the rear side of the cowl top outer 2 via an adhesive 5. Also,
On the front side of the cowl top outer 2, a seal member 7 is provided which is pressed against the back of the bonnet 6 and seals the space between the engine room and the cowl 1 (not shown). An opening 2a is provided substantially at the center of the cowl top outer 2 in the vehicle longitudinal direction.
Are formed.

As shown in FIGS. 1 and 2, the wiper device 8
Is a drive motor (not shown), a wiper link 9, a swing arm 10, a pivot holder 11, and a holder bracket 1.
2, a wiper pivot 13 and a wiper arm 14. One end of a swing arm 10 is fixed to a lower end of the wiper pivot 13 by a mounting nut 15.
Is connected to a wiper link 9. A wiper arm 14 is fixed to an upper end of the wiper pivot 13 by a mounting nut 16. Wiper pivot 13
Is pivotally supported by a pivot holder 11 around its periphery, and a substantially triangular plate-like flange portion 11a is integrally formed at an axial center of an outer portion of the pivot holder 11, and a fastening bolt is provided on the flange portion 11a. Mounting hole 1 through which 17 passes
1b is formed in plurality.

The holder bracket 12 is formed of a sheet metal having a hexagonal cross section having six bent portions 12a as shock absorbing portions. A through hole 12 d into which the pivot holder 11 is inserted and a flange 11
A mounting hole 12e is formed at a position corresponding to the mounting hole 11b, and a lower surface 12c facing the upper surface 12b is fixed to the cowl top inner 3 by welding.
The wiper link 9 penetrates through the space inside 2.

The pivot holder 11 is inserted from above into a through hole 12d formed in the upper surface 12b of the holder bracket 12, and has a mounting hole 11b formed in the flange portion 11a of the pivot holder 11 and a mounting hole formed in the upper surface 12b. 12e is positioned on the upper surface 12b so as to align with the upper surface 12e, and is fixed by the fastening bolt 17. Note that the holder bracket 12 has a thickness and width that can sufficiently support a load acting on a plane perpendicular to the wiper pivot axis through the pivot holder 11 when the wiper is operated.

With this structure, the holder bracket 12 has sufficient rigidity to support the pivot holder 11 when the wiper is operated. However, for example, the vehicle collides with a pedestrian or the like, and the pedestrian is jumped up. When a pedestrian collides with the wiper pivot 13, an impact in the axial direction is applied to the pivot holder 11 from above. Therefore, as shown in FIG. 3, the hexagonal holder bracket 12 is bent at each bent portion 12 a. The pivot holder 11 moves downward while the space between the opposing upper surface 12b and lower surface 12c is reduced at the same time as the left and right surfaces are expanded outwardly, and the shock is absorbed by the deformation of the holder bracket 12 at this time. Therefore, it is possible to reduce the impact applied to the pedestrian due to the collision with the wiper pivot 13.

When the holder bracket 12 is deformed, FIG.
Since the left and right surfaces extend outward as shown in FIG. 7, the left and right surfaces of the bracket 12 do not interfere with the wiper link 9 and the swing arm 10 penetrating the inside of the bracket 12, and the pivot holder 11 can move smoothly. It is possible to obtain a desired shock absorbing performance. By appropriately selecting the material, plate thickness, and width of the holder bracket 12, the magnitude of the load and the amount of impact absorption at the start of deformation can be adjusted to desired values.

As a modification of the first embodiment, as shown in FIGS. 4A and 4B, a part or all of an end portion and an inner edge of a bent portion 12a of a holder bracket 12 are shown. Alternatively, by forming the notch 18, the magnitude of the load when deformation starts and the amount of impact absorption may be adjusted. The notch 18 corresponds to any of the bent portions 1.
2a.

The shape of the pivot bracket is not limited to a hexagonal cross section. When a predetermined load or more is applied in the axial direction of the wiper pivot, the shape of the holder bracket allows the wiper pivot to move downward in the axial direction due to deformation of the holder bracket. The deformation direction of the bracket component may be any direction as long as it does not interfere with the wiper link or the like. For example, as in the second embodiment shown in FIG. 5, the bracket component may be fitted with a cantilever bracket 12 'having three bent portions 12a. In the same manner as described above, the impact applied from the axial direction of the wiper pivot can be absorbed by the deformation of the bracket, and the workability at the time of assembling the wiper link 9 can be improved.

Further, it is not always necessary to form a bent portion on the bracket as the shock absorbing portion, and the third portion shown in FIG.
As in the embodiment, the bracket 112 is
Upper surface 112a to which the 12 pivot holders 11 are fixed
And the lower surface 11 fixed to the cowl top panel inner 3
2b and a pair of side surfaces 112c, opposing each other to connect these upper surface 112a and lower surface 112b.
112d, a notch 112e extending in a direction perpendicular to the supporting direction is formed at the approximate center of the wiper pivot supporting direction (vertical direction in the drawing) of each of the side surfaces 112c and 112d. When a shock is input from above as shown in FIG.
Even if 112d is formed so as to expand and deform left and right,
As described above, the shock applied from the axial direction of the wiper pivot can be absorbed by the deformation of the bracket.

Further, as shown in FIG. 8A, the side surfaces 112c and 112d are replaced with the notches 112e formed as impact absorbing portions on the side surfaces 112c and 112d.
The thickness of the side surfaces 112c and 112c is changed as shown in FIG.
Also with the configuration in which the hole 112f is formed in the middle part in the supporting direction of d, the side walls 112c and 112d can be deformed as shown in FIG. 7, and the same effects as described above can be obtained.

A pair of opposed side surfaces connecting an upper surface 212a to which the pivot holder 11 is fixed and a lower surface 212b to be fixed to the cowl top panel inner 3 like a bracket 212 according to a fourth embodiment shown in FIG. 21
A plurality of beads (concave portions) 212e extending in a direction perpendicular to the supporting direction are formed as shock absorbing portions in each of 2c and 212d, and a pair of side surfaces 112c and 112d when a shock is input from above as shown in FIG. Even if is formed so as to be deformed in a bellows shape in the supporting direction (vertical direction), similarly to the above, the shock applied from the axial direction of the wiper pivot can be absorbed by the deformation of the bracket.

[0018]

As described in detail above, according to the wiper mounting structure of the present invention, a wiper pivot having a wiper arm mounted at one end and a link for driving the wiper arm mounted at the other end, and a shaft having the wiper pivot mounted thereon. A pivot holder for supporting the pivot holder, and a holder bracket for fixing the pivot holder to a vehicle body component. The wiper pivot is deformed when a load greater than a predetermined value is applied to the holder bracket in the axial direction of the wiper pivot. The shock absorber is provided to enable the wiper pivot to move downward, and when an object collides in the axial direction of the wiper pivot, the shock absorber is deformed by the shock absorber of the holder bracket and the shock is absorbed at the same time as the wiper pivot moves downward. The impact applied to the object can be reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a wiper mounting structure according to a first embodiment of the present invention.

FIG. 2 is an exploded perspective view of the wiper mounting structure according to the first embodiment of the present invention.

FIGS. 3A and 3B are side views showing the operation of the wiper mounting structure according to the first embodiment of the present invention, wherein FIG.
(B) is a figure which shows the state after an impact.

FIG. 4 is a view showing a modified example of the holder bracket according to the first embodiment of the present invention, wherein (a) is a perspective view thereof, and (b) is a partial side view thereof.

FIG. 5 is a perspective view showing a holder bracket according to a second embodiment of the present invention.

FIG. 6 is a perspective view showing a holder bracket according to a third embodiment of the present invention.

FIG. 7 is a side view showing the operation of the wiper mounting structure according to the third embodiment of the present invention, wherein (a) is a view showing a state before impact;
(B) is a figure which shows the state after an impact.

8A and 8B are diagrams showing a modification of the wiper mounting structure according to the third embodiment of the present invention, wherein FIG. 8A is a side view showing a first modification thereof, and FIG. 8B is a front view showing a second modification thereof. FIG.

FIG. 9 is a perspective view showing a holder bracket according to a fourth embodiment of the present invention.

10A and 10B are side views illustrating the operation of the wiper mounting structure according to the fourth embodiment of the present invention, in which FIG. 10A is a diagram illustrating a state before impact and FIG. 10B is a diagram illustrating a state after impact.

[Explanation of symbols]

 Reference Signs List 2 cowl top outer 3 cowl top inner 4 windshield glass 8 wiper device 9 wiper link 10 swing arm 11 pivot holder 11a flange 12 holder bracket 12a bent portion (shock absorbing portion) 13 wiper pivot 14 wiper arm

Continued on the front page (72) Inventor Toshiaki Mizuno 5-33-8 Shiba, Minato-ku, Tokyo Inside Mitsubishi Motors Corporation (72) Inventor Yoichi Kanekawa 5-33-8 Shiba, Minato-ku, Tokyo Mitsubishi Motors 3D025 AA01 AC01 AD02 AE03 AE42 AE66

Claims (1)

[Claims] 1. A wiper pivot having a wiper arm attached to one end and a link for driving the wiper arm attached to the other end, a pivot holder for pivotally supporting the wiper pivot, and a holder for fixing the pivot holder to a vehicle body component. And a shock absorbing portion that deforms when a predetermined load or more is applied in the axial direction of the wiper pivot to the holder bracket so that the wiper pivot can move in the axial direction. , Wiper mounting structure.