JP2010254163A - Mounting structure of wiper device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mounting structure of a wiper device capable of reducing shocks onto a pedestrian even when a pedestrian and the like are jumped onto a vehicle and collide with an upper part of a pivot, while preventing water from leaking from an insertion hole of a cowl. <P>SOLUTION: A bent point bent in a vehicle downward direction of a pivot shaft toward an inner side from an outer side with a pivot shaft as an inner side is provided to a cowl. An inner side from the bent point of the cowl is a peripheral edge of the insertion hole, and the peripheral edge of the insertion hole of the cowl is fitted with the pivot via an elastic member. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

The present invention relates to a mounting structure for a wiper device of a vehicle, and more particularly to a mounting structure for a wiper device for protecting a collision body when the vehicle collides with a collision body such as a pedestrian.

2. Description of the Related Art Conventionally, there is a wiper device configured by inserting a pivot for swinging a wiper arm into a cowl insertion hole. In such a wiper device, the wiper arm is fixed to the tip end of the pivot shaft center portion protruding upward from the vehicle through the cowl insertion hole. A grommet as an elastic member for preventing water infiltration is attached between the periphery of the insertion hole of the cowl and the pivot. Further, with the pivot shaft as the inner side, the periphery of the insertion hole of the cowl and the outer side of the periphery of the insertion hole are continuously connected without being bent, as shown in FIG. An inclined state (for example, Patent Document 1) or a substantially vertical state as shown in FIG.

JP-A-9-150714

When a vehicle including the wiper device having the above-described configuration and a pedestrian collide and the pedestrian head collides with the upper part of the pivot, an impact is applied from above the pivot to the lower part in the pivot axis direction. When a load of a predetermined value or more is applied to the pivot, the pivot falls out from the cowl insertion hole to the inside of the vehicle body. At that time, as shown in FIG. 8B, the grommet deformed by the interference with the pivot is formed on the periphery of the insertion hole. There is a risk of getting caught. As a result, the grommet may be crushed and the grommet may be prevented from falling off. Therefore, there is room for improvement in terms of reducing the impact on pedestrians.

The present invention has been made in view of the above circumstances, and even when a pedestrian or the like jumps up and collides with the pivot from above while preventing inundation from the insertion hole of the cowl, the impact to the pedestrian or the like is exerted. A wiper device mounting structure that can be reduced is provided.

In order to solve the above-mentioned problem, a pivot is inserted into an insertion hole provided in a cowl, and the periphery of the insertion hole of the cowl and the pivot are fitted via an elastic member. The wiper device mounting structure is such that the pivot can be removed to the inside of the vehicle body when a load greater than a predetermined value is applied to the cowl. A bending point that bends in the vehicle lower direction of the pivot shaft toward the side is provided, and an inward side from the bending point of the cowl is the periphery of the insertion hole.

According to a second aspect of the present invention, in the first aspect of the invention, an outer side of the bending point of the cowl is formed substantially perpendicular to the pivot shaft, and an inner side of the bending point of the cowl is the pivot. The pivot shaft is formed so as to be inclined in the vehicle lower direction with respect to a plane perpendicular to the shaft.

According to a third aspect of the present invention, in the first aspect of the invention, an outer side of the bending point of the cowl is formed to be inclined in a vehicle upper direction of the pivot shaft with respect to a plane perpendicular to the pivot shaft. An inward side of the bending point of the cowl is formed to be inclined in a vehicle lower side direction of the pivot shaft with respect to a plane perpendicular to the pivot shaft.

According to a fourth aspect of the present invention, in the wiper device mounting structure according to any one of the first to third aspects, a hollow portion is formed between the fitting portion of the elastic member with the periphery of the insertion hole and the pivot. It is characterized by.

According to the inventions of claims 1 to 3, when a pedestrian or the like is flipped up and an impact exceeding a predetermined value is applied to the pivot from the upper side to the lower side in the axial direction, the pivot is dropped and the elastic member is easily dropped. To do. Therefore, it is possible to suppress the elastic member from being caught by the peripheral edge of the insertion hole and remaining crushed, so that the impact given to the pedestrian or the like can be reduced.

According to invention of Claim 4, the fitting part of an elastic member can move to the pivot-axis center part direction. Therefore, the pivot can be easily removed.

The schematic of the attachment structure of the wiper apparatus in the Example of this invention. The pivot shaft circumference sectional view in the example of the present invention. (A) before grommet dropping, (b) after grommet dropping. The form of the shape of a grommet in the Example of this invention. The form of the fitting part of a grommet in the Example of this invention. Modification 1 of the structure around the pivot axis of the cowl. Modification 2 of the structure around the pivot axis of the cowl. An example of the attachment structure of the conventional wiper apparatus. The figure which the grommet deform | transformed in the other example of the attachment structure of the conventional wiper apparatus. (A) before grommet deformation, (b) after grommet deformation.

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the wiper device includes a wiper system X including a motor and a link mechanism, a pivot 1 including a pivot shaft center 1a, a wiper arm (not shown), and a wiper blade (not shown). The pivot shaft center portion 1 a is disposed in the pivot 1, and the upper end in the vehicle vertical direction of the pivot shaft center portion 1 a protrudes from the upper end in the vehicle vertical direction of the pivot 1. The pivot 1 is fastened to the vehicle body side via a fixing bracket (not shown). The rotational motion by the drive of the motor is converted into the swing motion of the pivot shaft center portion 1a through the link mechanism. The upper end in the vehicle vertical direction of the pivot 1 protrudes from the insertion hole 4 formed in the cowl 2 to the upper side of the vehicle, and the base end of the wiper arm is fixed to the upper end in the vehicle vertical direction of the pivot shaft center portion 1a by a nut (not shown). . A wiper blade (not shown) is attached to the tip of the wiper arm. By activating the motor, the wiper arm swings and the surface of the window glass is wiped by the wiper blade. The wiper device has two sets of a pivot 1, a wiper arm, and a wiper blade, and each pivot is fastened to the vehicle body side via a fixed bracket. Further, the wiper system is configured to have a one-point fastening point on the vehicle body side, and the wiper device is supported by three-point fastening on the vehicle body side.

The pivot 1 has a substantially cylindrical shape, and is inserted through an insertion hole 4 provided in the cowl 2 as shown in FIG. The cowl 2 is provided with a bending point 3a that is bent in the vehicle lower direction of the pivot shaft from the outside toward the inside with the pivot shaft as an inward side. The bent portion 3 includes a bent point 3a, a bent point outer portion 3b which is substantially perpendicular to the pivot shaft and formed outward from the bent point 3a, and the bent point outer portion 3b on the vehicle lower side of the pivot shaft. It is comprised by the inclination part 3c as an insertion-hole periphery which inclines and is formed inward from the bending point 3a.

A grommet 5 as an elastic member is attached between the inclined portion 3c and the pivot 1, and water intrusion into the cowl is prevented.

As shown in FIG. 2A, the grommet 5 includes a pivot contact portion 5a, a pivot peripheral portion 5b, a vehicle upper side flange portion 5c, a vertical flange connecting portion 5d, and a vehicle lower side flange portion 5e. Each is formed integrally. The pivot contact portion 5 a is formed in contact with the outer peripheral surface of the pivot 1. The pivot peripheral portion 5b is formed to extend downward from the pivot contact portion 5a toward the vehicle upper side surface of the inclined portion 3c of the bent portion 3 of the cowl 2. The vehicle upper side flange portion 5c is formed so as to extend from the pivot peripheral portion 5b and contact the vehicle upper side surface of the inclined portion 3c. The vehicle lower flange portion 5e is formed so as to contact the vehicle lower side surface of the inclined portion 3c. The inclined portion 3c is sandwiched between the vehicle upper side flange portion 5c and the vehicle lower side flange portion 5e. The upper and lower flange connecting portions 5d are formed to extend from the vehicle upper side flange portion 5c and the vehicle lower side flange portion 5e toward the insertion hole 4 along the inclined portion 3c. A fitting portion is formed by the vehicle upper side flange portion 5c, the upper and lower flange connecting portion 5d, and the vehicle lower side flange portion 5e.

A first cavity 6 a is formed between the pivot peripheral portion 5 b of the grommet 5 and the pivot 1. On the other hand, a second cavity 6b is formed between the pivot end of the pivot of the upper and lower flange connecting portion 5d of the grommet 5 and the pivot.

The grommet 5 is inserted from the vehicle upper side of the bent portion 3 of the cowl 2 into the insertion hole 4 by elastically deforming the vehicle lower side flange portion 5e. And the fitting part formed by the vehicle upper side flange part 5c, the upper and lower flange connecting part 5d, and the vehicle lower side flange part 5e is fitted with the inclined part 3c, and the vehicle lower side flange part 5e and the vehicle upper side are fitted. The inclined portion 3 c is sandwiched between the flange portion 5 c and attached to the cowl 2.

Next, an operation when a vehicle equipped with the wiper device collides with a pedestrian will be described.

When a vehicle equipped with the wiper device collides with a pedestrian and the pedestrian jumps up and the head of the pedestrian collides with the upper part of the pivot 1, an impact is applied from the upper part of the pivot 1 to the lower part of the pivot shaft center 1a. . When the impact load becomes a predetermined value or more, a fixing bracket (not shown) is cracked, and the pivot 1 is dropped from the insertion hole 4 provided in the cowl 2. Then, the pivot 1 rotates around the axis connecting the fastening point of another pivot not shown and the fastening point of the wiper system not shown. Therefore, the impact is transmitted to the grommet 5 via the pivot 1, and the impact acts on the inclined portion 3c of the bent portion 3 of the cowl 2 via the grommet 5, and a reaction force is generated from the inclined portion 3c. At this time, since the inclined portion 3c is inclined from the bending point outer portion 3b to the vehicle lower side of the pivot shaft, the grommet 5 easily falls off as shown in FIG. 2B, and the grommet 5 and the inclined portion 3c The catch of is suppressed. In particular, when the first hollow portion 6a provided between the pivot 1 and the pivot peripheral portion 5b of the grommet 5 is provided, the contact area between the pivot 1 and the grommet 5 is reduced, so that the grommet 5 is easily dropped. . Further, when the second hollow portion 6b provided between the pivot 1 and the upper and lower flange connecting portions 5d of the grommet 5 is provided, the upper and lower flange connecting portions 5d of the grommet 5 are movable in the direction of the pivot shaft center portion 1a. Therefore, the grommet 5 is easy to drop off. Therefore, in the said Example, it can suppress that a grommet is caught in the inclination part 3c, and can remain crushed, and can prevent interference with a pedestrian head.

In the above embodiment, the first cavity 6a and the second cavity 6b are formed between the pivot 1 and the grommet 5, but as shown in FIG. 3 (a) or 3 (b). Only one of the hollow portions may be provided, or the hollow portion may not be provided as shown in FIG. Further, there may be a hollow portion in the entire circumferential direction of the pivot shaft, or only a part in the circumferential direction of the pivot shaft.

Further, in the above-described embodiment, reference is not made in particular to the lengths Lc and Le of the vehicle upper side flange portion 5c and the vehicle lower side flange portion 5e. However, as shown in FIG. The relationship between the inclination axis direction length Lc and the inclination axis direction length Le of the vehicle lower side flange portion 5e is such that the inclination axis direction length Lc of the vehicle upper side flange portion 5c is long as shown in FIG. Alternatively, it may be long as shown in FIG. The inclination axis direction length Lc of the vehicle upper side flange portion 5c and the inclination axis direction length Le of the vehicle lower side flange portion 5e may be substantially equal as shown in FIG. The length Lc of the vehicle upper side flange portion 5c and the length Le of the vehicle lower side flange portion 5e and the shape of the grommet may or may not be uniform in the circumferential direction of the pivot shaft. From the viewpoint of dropping off the grommets, the length Le of the vehicle lower side flange portion 5e is preferably longer than the length Lc of the vehicle upper side flange portion 5c as shown in FIG. 4C. .

Hereinafter, a modified example of the structure of the bent portion around the pivot shaft of the cowl in the mounting structure of the wiper device of the present invention will be described.

<Modification 1>
In the first modification, as shown in FIG. 5, the cowl 12 has a bending point 13a that bends in the vehicle lower direction of the pivot shaft from the outside to the inside with the pivot shaft inward as in the embodiment. Is provided, and a bent portion 13 is formed. The bent portion 13 includes a bent point 13a, a bent point outer portion 13b formed on the outer side from the bent point 13a, and an inclined portion as an insertion hole periphery formed on the inner side from the bent point 13a. 13c. However, it differs from the embodiment in that the bending point outer portion 13b is formed so as to be inclined upward in the vehicle vertical direction of the pivot shaft from a surface substantially perpendicular to the pivot shaft.

<Modification 2>
In the second modification, as shown in FIG. 6, the cowl 22 is bent in the vehicle lower direction of the pivot shaft from the outside to the inside with the pivot shaft inward as in the embodiment and the first modification. A bending point 23a is provided, and a bent portion 23 is formed. The bent portion 23 includes a bent point 23a, a bent point outer portion 23b formed on the outer side of the bent point 23a, and an inclined portion as an insertion hole periphery formed on the inner side of the bent point 23a. 23c. However, a part of the inclined portion 23c in the circumferential direction of the pivot axis is formed on a surface that is continuous with the bending point outer portion 23b and is substantially perpendicular to the pivot shaft, and the other circumferential portion is formed from the bending point outer portion 23b. The present embodiment differs from the first embodiment and the first modification in that the pivot shaft is inclined toward the vehicle lower side. Therefore, in the case of the cowl structure of the second modification, the shape of the upper and lower flange connecting portions 5d of the grommet 5 is not uniform in the circumferential direction of the pivot shaft.

In the first and second modified examples, the grommet 5 includes the pivot contact portion 5a, the pivot peripheral portion 5b, the vehicle upper side flange portion 5c, the upper and lower flange connecting portion 5d, and the vehicle lower side flange portion as in the embodiment. 5e, and each is formed integrally. Moreover, the point which the 1st cavity part 6a and the 2nd cavity part 6b are formed is the same as that of an Example.

In the first and second modified examples, the inclined portion 13c (23c) is inclined from the inflection point outer portion 13b (23b) to the vehicle lower side of the pivot shaft as in the above-described embodiment. The catch with (23c) is suppressed and the grommet 5 is easy to drop off.

In the first and second modified examples, the lengths of the hollow portion and the flange portion in the direction of the tilt axis may be changed as appropriate in the same manner as in the embodiment.

In the said Example, the modification 1, and the modification 2, the inclination part may be curved instead of linear inclination, and only this inclination part may be another member. Further, the outer portion of the bending point and the inclined portion may be smoothly and continuously curved. In the present invention, the outward side of the bending point of the cowl is not particularly limited as long as the inclined part is bent downward from the extended line shape extending outward from the bending point. When the inclined portion is curved, there is no particular problem if the outer side of the bending point of the cowl is bent to the vehicle lower side than the tangential direction at the bending point of the inclined portion. The outer portion of the bending point may be substantially linear, bent or curved. The insertion hole is not limited to a circular shape and may have any shape. The insertion hole may be provided at the end of the cowl and cut out.

Further, in the above-described embodiment, modification 1 and modification 2, the ease of dropping off the grommet depends on the inclination angle of the inclined portion from the plane perpendicular to the pivot axis, the material / shape of the grommet, etc. It can be adjusted as appropriate. The inclination angle is preferably smaller in order to prevent water from accumulating.

Further, in the above-described embodiment, the first modification, and the second modification, the wiper device is a three-point fastening support, but it is not necessary to be limited to three points.

X ································································································· ........ Cowls 3, 13, 23... Bending portions 3a, 13a, 23a... Bending points 3b, 13b, 23b... Bending point outer portions 3c, 13c, 23c.・ Inclined part 4 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Insertion hole 5 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Grommet 5a ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Pivot contact part 5b ・・ ・ ・ ・ ・ ・ Pivot peripheral part 5c ・ ・ ・ ・ ・ ・ ・ ・ Vehicle upper side flange part 5d ・ ・ ・ ・ ・ ・ ・ ・ Upper and lower flange connecting part 5e ・ ・ ・・ ・ ・ ・ ・ ・ ・ ・ Vehicle rear side flange 6a ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ First cavity 6b ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Second cavity

Claims (4)

A pivot is inserted into an insertion hole provided in the cowl, and the periphery of the insertion hole of the cowl and the pivot are fitted via an elastic member. When a load of a predetermined value or more is applied to the pivot, the pivot is In the attachment structure of the wiper device that can be detached to the inner side, the cowl is bent in the vehicle lower direction of the pivot shaft from the outer side toward the inner side with the pivot shaft as the inner side. A mounting structure for a wiper device, characterized in that a bending point is provided, and an inner side of the cowl that is inward from the bending point is a periphery of the insertion hole. An outer side of the bending point of the cowl is formed substantially perpendicular to the pivot shaft, and an inner side of the bending point of the cowl is below the pivot shaft with respect to a plane perpendicular to the pivot shaft. 2. The wiper device mounting structure according to claim 1, wherein the wiper device is inclined in a lateral direction. An outward side of the bending point of the cowl is formed to incline toward the vehicle upper side of the pivot shaft with respect to a surface perpendicular to the pivot shaft, and an inward side of the bending point of the cowl is the pivot. 2. The wiper device mounting structure according to claim 1, wherein the structure is formed so as to be inclined in a vehicle lower direction of the pivot shaft with respect to a surface perpendicular to the shaft. The wiper device mounting structure according to any one of claims 1 to 3, wherein a hollow portion is formed between a fitting portion of the elastic member with a periphery of the insertion hole and the pivot.