JP2003312450A - Installing structure of wiper pivot part - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To effectively relieve a shock received to a pedestrian when the pedestrian is bumped against a wiper pivot part from a rear end part of an engine hood by colliding with a vehicle. <P>SOLUTION: This installing structure of the wiper pivot part 1 is constituted so that a forward projecting first cowl bracket 4 is arranged on a front wall 21 of a cowl 2 of an automobile, a backward projecting second cowl bracket 5 is arranged on a front wall 31 of an opening cowl 3 juxtaposed in front of the cowl 2, tip parts 41 and 51 of both cowl brackets 4 and 5 are vertically superposed, and the wiper pivot part 1 is fastened by a bolt member 6 integrally with the tip parts 41 and 51 of both cowl brackets 4 and 5, and is formed as a structure for separating both tip parts 41 and 51 by separating the bolt member 6 from the tip part 51 by moving by push-expanding a slit 7 by a bumping load of the pedestrian by arranging the slit 7 reaching the tip end of the cowl bracket 5 from a through hole 52 for inserting the bolt member 6 in the tip part 51 of the second cowl bracket 5. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiper pivot portion mounting structure in which a pivot portion of a wiper is supported by a cowl of an automobile and an opening cowl provided in parallel with the cowl.

[0002]

2. Description of the Related Art As shown in FIG.
There is a structure in which the wiper pivot part 1 which is a rotation center is installed in a shelf-like open cowl 3 which is installed along a front surface of a cowl 2 having a closed cross section which supports a lower edge of a windshield G. As shown in FIG. 5, the open cowl 3 has a substantially U-shaped cross section with an open top, and a trailing edge flange 30 is bolted to the leading edge flange 20 of the cowl 2. Further, the cowl 2 and the opening cowl 3 are located at both left and right positions in the middle portion in the vehicle width direction,
The front end of the first cowl bracket 4 that projects forward from the front surface of the front wall 21 of the cowl 2 and the rear surface of the front wall 31 of the open cowl 3 that faces the first cowl bracket 4 and projects rearward from the rear surface. The open cowl 3 is supported by connecting the tip end of the second cowl bracket 5 to the open cowl 3.

At the front position of the driver's seat, the first and second cowl brackets 4 and 5 (on the left side in FIG. 5) that bridge the front wall 21 of the cowl 2 and the front wall 31 of the open cowl 3 are provided. As shown in FIGS. 6 and 7, the wiper pivot portion 1 of the wiper W on the passenger side is attached integrally with the connecting portions of the cowl brackets 4 and 5. Wiper pivot part 1
The wiper rotating shaft 11 is held by a cylindrical bearing 10, and the wiper pivot portion 1 is integrally provided with a wiper bracket 12 projecting from the bearing 10 in a direction perpendicular thereto. In the wiper pivot portion 1, the tip end portion of the wiper bracket 12 is superposed on the tip end portions of the first and second cowl brackets 4 and 5, and the bolt member 6 penetrating each tip end portion is tightened and fixed. . The wiper rotating shaft 11 includes a cowl louver 3 that covers the upper portion of the open cowl 3.
A base end of a wiper arm is coupled to a shaft tip protruding upward through 5 and a shaft base end protruding downward of the bearing 10 is linked to a wiper motor (not shown) or a wiper on the driver's seat side. The member 16 is connected. Although not shown, the pivot portion of the wiper on the driver's seat side is attached to the side end of the open cowl 3 by another bracket. Figure 7
9 is an engine hood.

[0004]

By the way, when an automobile collides with a pedestrian, the pedestrian's upper body falls down on the engine hood 9 due to the reaction of the impact applied to the lower body, and the shoulders, head, etc. It may happen that the rear end portion is hit to the wiper pivot portion 1 at the base end of the wiper W. The falling displacement of the wiper pivot part 1 is restricted by the support rigidity of the first and second cowl brackets 4 and 5 which are hung between the cowls 2 and 3 against the pedestrian impact load F acting from above. In addition, an open cowl 3 supported by the first and second cowl brackets 4 and 5.
Since the front wall 31 of No. 3 is stretched, the bending deformation of the rear end of the engine hood 9 is also restricted, and the striking load F cannot be sufficiently absorbed.

Therefore, according to the present invention, a cowl bracket for supporting the wiper pivot portion and the open cowl when the vehicle collides with the pedestrian and a large impact load of the pedestrian acts on the wiper pivot portion from the rear end portion of the engine hood. It is an object to provide a mounting structure of the wiper pivot part in which the wiper pivot part is depressed and displaced, and the upper end part of the engine hood is flexibly deformed to absorb the impact load of a pedestrian without being stretched. It is a thing.

[0006]

According to the present invention, a first cowl bracket protruding forward is provided on a front wall of a cowl installed along a lower edge of a windshield of an automobile, and the first cowl bracket is provided along the cowl. A second cowl bracket that projects rearward is provided on the front wall of the open cowl that is juxtaposed in front of the first cowl bracket and the second cowl bracket.
In the attachment structure of the wiper pivot portion, the tip end portion of the cowl bracket is vertically overlapped, and the wiper pivot portion provided at the base end of the wiper is integrally fastened with the tip portions of both the cowl brackets by a bolt member. The tip portion of the cowl bracket or the tip portion of the second cowl bracket is provided with a slit from the through hole through which the bolt member is inserted to the tip end of the cowl bracket (claim 1).

[0007] The wiper bracket integrally provided on the pivot portion is further laid on the tip portions of the cowl brackets which are vertically stacked, and the tip portion of one of the cowl brackets which is laid on the upper side of the cowl brackets. The slit is formed in the lower side, and a nut member is provided on the lower surface of the tip portion of the other cowl bracket that is overlapped on the lower side, and the bolt member that penetrates through the tip portions of the wiper bracket and the cowl brackets that are overlapped is inserted into the nut. The member is fastened (claim 2).

When a pedestrian's striking load acts from the rear end of the engine hood to the wiper pivot portion from above and a downward load acts on the overlapping portion of both cowl brackets, the tip portions of the first and second cowl brackets. A force acts on these to separate them. As a result, the bolt member moves so as to widen the slit and separates from the tip end of the cowl bracket. Therefore, the first cowl bracket in which the tip portions of both cowl brackets are separated to be in a cantilever state bends downward, the wiper pivot portion falls, and the pedestrian's impact load is absorbed. Further, since the cowl brackets are separated from each other, the front wall of the open cowl is easily bent, and the rear end of the engine hood is also bent downward to absorb the impact load.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION As in the vehicle shown in FIG. 4, a wiper pivot mounting structure in which a wiper pivot portion 1 of a wiper W is installed in an open cowl 3 along a front surface of a cowl 2 along a lower edge of a front window G. An embodiment to which the present invention is applied will be described. As shown in FIGS. 3 and 5, the cowl 2 having a closed cross-sectional structure and the open cowl 3 having a substantially U-shaped cross-section that opens upward have a rear edge flange 30 of the open cowl 3 and the cowl 2.
The front side of the cowl 3 and the front edge flange 20 of the
Are juxtaposed.

The cowl 2 is provided with first cowl brackets 4 projecting forward at the left and right sides at the center of the front wall 21 of the front wall 21 in the vehicle width direction. On the other hand, the front wall 3 of the open cowl 3
A second cowl bracket 5 projecting rearward is provided on the rear surface of the vehicle 1 at a position facing the first cowl bracket 4. The first cowl bracket 4 and the second cowl bracket 5 are connected at their tips to each other to bridge the front wall 21 front surface of the cowl 2 and the front wall 31 rear surface of the open cowl 3 to support the open cowl 3 and to drive the cowl 3. The first and second cowl brackets 4 and 5 (left side in FIG. 5) located at the front position of the seat are the wiper pivot part 1 of the wiper W on the passenger side.
Is installed.

The details of the mounting structure of the wiper pivot portion 1 of the wiper W on the passenger side will be described below with reference to FIGS. 1 to 3. The first cowl bracket 4 is a press-molded product made of a metal plate, and has a hat-shaped main body 4 that extends forward.
A vertical plate-shaped fastening flange 44 is formed at the rear end of 0.
The main body 40 bends slightly downward at a position near the front end,
The tip 41 is inclined with respect to zero. A through hole 42 through which the bolt member 6 can be inserted is formed in the center of the tip portion 41, and a screw hole in which a weld nut 8 is welded is formed on the back surface thereof.
The fastening flange 44 also has mounting holes 45 formed on both left and right sides.

In the first cowl bracket 4, the fastening flange 44 is superposed on the upper end of the front surface of the front wall 21 of the cowl 2 and bolted through the mounting holes 45 so that the main body 40 is fixed to the front wall 21 of the cowl 2. On the other hand, it has an inclined posture that projects obliquely forward and downward. The inclination angle of the main body 40 is substantially parallel to the windshield G (FIG. 3) adhered to the upper surface of the cowl 2 after the first cowl bracket 4 is attached to the cowl 2.

The second cowl bracket 5 is a press-formed product having a vertical plate-like body at the front end of a hat-shaped main body 50 extending rearward, and a welding flange 54 having an inverted L-shaped cross-section with its upper end bent forward. I am doing it. The tip portion 51 of the main body 50 is bent obliquely upward and formed in an inclined shape. Tip 51
The cross sectional shape of is slightly larger than the tip portion 41 of the first cowl bracket 4.

The tip portion 51 of the second cowl bracket 5 has a through hole 4 in the tip portion 41 of the first cowl bracket 4.
A through hole 52 through which the bolt member 6 is inserted is formed at a central position corresponding to 2. Further, the distal end portion 51 is formed with a slit 7 extending in the protruding direction of the main body 50 from the through hole 52 to the tip end of the distal end portion 51. The width of the slit 7 is about 3/5 of the diameter of the through hole 52, and is slightly smaller than the diameter of the screw shaft of the bolt member 6 inserted into the through hole 52. Reference numeral 55 in the drawing is a pilot hole.

The second cowl bracket 5 opens the welding flange 54 and the rear upper end of the front wall 31 of the cowl 3 and the front wall 31.
It is welded and fixed to the corner of the upper edge flange that bends forward from the upper edge. The main body 50 projects rearward substantially horizontally, and has a slanted tip portion 51 that extends obliquely upward and rearward.
Is superposed on the inclined tip portion 41 of the first cowl bracket 4 from above, and the through hole 52 is made to coincide with the through hole 42 of the first cowl bracket 4.

As shown in FIGS. 1 and 3, the wiper pivot portion 1 comprises a cylindrical bearing 10 and a wiper rotating shaft 11 held in the bearing 10. The wiper pivot portion 1 has a bearing. A flat wiper bracket 12 made of a thick plate that protrudes at a right angle from an intermediate position in the axial direction of 10 is integrally projected. The tip of the wiper bracket 12 is sandwiched by a pair of upper and lower ring-shaped vibration-damping members 15,
A through hole 13 for inserting the bolt member 6 together with the vibration isolating member 15 is formed at the tip portion.

The wiper pivot portion 1 has a tip end portion 41, 5 where the first and second cowl brackets 4, 5 are superposed.
In the lateral position of 1, the wiper rotating shaft 11 has the windshield G
The wiper bracket 12 is arranged in an inclined manner so as to stand upright with respect to the glass surface of
And the tip portions of the wiper bracket 12 are overlapped with the tip portions 41, 51 of the cowl brackets 4, 5 which are superposed from above, so that the wiper bracket 12 and the cowl brackets 4, 5 penetrate each other. The bolt member 6 is inserted through the holes 13, 42 and 52, and the bolt member 6 is attached by being fastened to the weld nut 8 on the rear surface of the tip portion 41 of the second cowl bracket 4.

The open cowl 3 has its upper opening closed by a cowl louver 35 provided between the upper edge flange of the front wall 31 and the lower edge of the windshield G, and the wiper pivot portion is moved upward from the wiper mounting hole of the cowl louver 35. The tip of the wiper rotating shaft 11 of No. 1 is provided so as to project. The base end of the wiper arm of the wiper W is coupled to the shaft tip of the wiper rotating shaft 11. Further, the wiper rotating shaft 1 penetrating the bearing 10 downwardly.
A link member 16 which is linked to a wiper motor (not shown) and the other wiper (a wiper on the driver's seat side) is connected to the shaft base end of 1. The wiper pivot portion of the driver side wiper is installed at the side end position inside the open cowl 3 by another wiper bracket (not shown).

The rear end of the engine hood 9 is brought into contact with the upper edge flange of the front wall 31 of the open cowl 3 and the overlapping portion of the cowl louver 35 from above via a weather strip. It is provided near the connecting portion between the tip of the wiper rotating shaft 11 of the wiper pivot portion 1 and the base end of the wiper arm of the wiper W (FIG. 3).

Since the first and second cowl brackets 4 and 5 having a hat-shaped cross section are hung between the cowl 2 and the open cowl 3, sufficient support rigidity of the open cowl 3 is ensured, and The stability of the mounting part of the wiper pivot part 1 is sufficiently ensured.

When the vehicle collides with the pedestrian and the pedestrian falls on the engine hood 9, the head and shoulders of the pedestrian are struck from the rear end of the engine hood 9 to the wiper pivot portion 1 of the wiper W, When the impact load F is applied to the tip of the shaft of the pivot portion 1 from above, a downward force is applied to the tip portions 41 and 51 of the first and second cowl brackets 4 and 5 that have overlapped with each other. A force is applied to the tip portions 41 and 51 in the direction of separating them forward and backward. As a result, the bolt member 6 that fastens the tip end portion of the wiper bracket 12 and the tip end portions 41 and 51 of the cowl brackets 4 and 5 together.
Is relatively moved toward the terminal side of the distal end portion 51 and is separated from the distal end portion 51 while expanding the slit 7 from the through hole 52 of the distal end portion 51. As a result, the tip portions 41 and 51 of the cowl brackets 4 and 5 are separated from each other, the cantilevered first cowl bracket 4 bends downward, the wiper pivot portion 1 falls, and the impact load F is absorbed. It

Further, when the cowl brackets 4 and 5 are separated from each other, the open cowl 3 is easily bent from the front wall 31 to the bottom wall, and the wiper pivot portion 1 which is depressed even when the impact load F is large opens the bottom of the cowl 3. Since it abuts against the wall and pushes it down, the impact load F is sufficiently absorbed,
The impact of pedestrians can be effectively mitigated. Furthermore,
Since the front wall 31 of the open cowl 3 is easily bent, the rear end portion of the engine hood 9 is also bent and deformed downward, and the driving load F is more effectively absorbed. The plate thickness of the first and second cowl brackets 4 and 5 and the groove width of the slit 7 depend on the force required to plastically deform the slit forming portion of the second cowl bracket 5 by the bolt member 6 and the impact load F. It is decided in consideration of injuries to pedestrians.

In the above-described embodiment, the weld nut 8 is provided on the tip portion 41 of the first cowl bracket 4, and the tip portion 51 of the second cowl bracket 5 superposed on the tip portion 41 is inserted through the through hole 52. Although the slit 7 reaching the terminal is provided, the present invention is not limited to this, and a weld nut is provided at the tip portion 51 of the second cowl bracket 5, and the tip portion 41 of the first cowl bracket 4 is superposed on the tip portion 51. A slit extending from the through hole 42 to the end may be provided in the tip portion 41 of the first cowl bracket 4 so as to match. Although the first and second cowl brackets 4 and 5 provided on the front side of the passenger seat do not support the wiper pivot part, the above-mentioned driver side cowl bracket 4 supporting the wiper pivot part 1 is provided. , 5, the resistance to the downward bending of the rear end of the engine hood 9 becomes small.

[0024]

According to the present invention, when the vehicle collides with a pedestrian and the shoulder or the head of the pedestrian is struck from the rear end portion of the engine hood to the wiper pivot portion, the wiper pivot portion and the opening cowl are removed. Without being restricted by the supporting cowl bracket, the wiper pivot portion is depressed and displaced, and the rear end portion of the engine hood is flexibly deformed, so that the impact received by the pedestrian can be effectively mitigated.

[Brief description of drawings]

FIG. 1 is a plan view showing a mounting structure of a wiper pivot portion of the present invention.

FIG. 2 is an exploded perspective view of a cowl bracket used in the attachment structure of the wiper pivot portion of the present invention.

FIG. 3 is a sectional view taken along a line III-III in FIG.

FIG. 4 is a perspective view of a main part of a vehicle to which the present invention is applied.

FIG. 5 is a perspective view of a cowl and an opening cowl of a vehicle to which the present invention is applied.

FIG. 6 is a plan view of a conventional attachment structure for a wiper pivot portion.

FIG. 7 is a cross-sectional view taken along a line VII-VII in FIG.

[Explanation of symbols]

1 Wiper pivot part 12 Wiper bracket 2 cowls 21 front wall 3 open cowls 31 front wall 4 First cowl bracket 41 Tip 5 Second cowl bracket 51 Tip 52 through hole 6 bolt members 7 slits 8 Nut member (weld nut) G windshield W wiper

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Claims (2)

[Claims] 1. A first cowl bracket which projects forwardly is provided on a front wall of a cowl installed along a lower edge of a windshield of an automobile, and an opening which is juxtaposed in front of the cowl along the cowl. A second cowl bracket that projects rearward is provided on the front wall of the cowl, and the tip end portion of the first cowl bracket and the tip end portion of the second cowl bracket are vertically overlapped with each other to form a base end of the wiper. In the attachment structure of the wiper pivot part in which the provided wiper pivot part is integrally fastened with the tip parts of both the cowl brackets by a bolt member, in the tip part of the first cowl bracket or the tip part of the second cowl bracket, A structure for mounting a wiper pivot part, wherein a slit extending from a through hole through which a bolt member is inserted to a tip end of a cowl bracket is provided. 2. A wiper bracket integrally provided on the pivot portion is further laid on the tip portions of the cowl brackets that are vertically stacked, and one of the cowl brackets that is laid on the upper side of the two cowl brackets is The slit is formed at the tip portion, a nut member is provided on the lower surface of the tip portion of the other cowl bracket that is overlapped on the lower side, and the bolt member that penetrates the wiper bracket and the tip portions of both cowl brackets that are overlapped is inserted. The wiper pivot part mounting structure according to claim 1, wherein the nut member is fastened to the nut member.