JP5501295B2 - Collision protection structure - Google Patents

Description

  The present invention relates to a collision object protection structure for reducing damage to a collision object that has collided with the front of a vehicle.

  The wiper device described in Patent Document 1 includes a wiper motor 1, a first link arm 10 (lever), a first link arm 7 (segment), a first link (rod) 6, and a second link 9 (rod). And have. Further, the first and second sleeves 12 and 13 are rotatably arranged with respect to the first and second link arms 7 and 10 with the pivot shafts 8 and 11 being rotatably fitted therein. In this wiper device, a plate-shaped housing mounting portion 3d is formed to project from a speed reduction portion 3b disposed in the wiper motor 1, and a mounting seat 3f at the front end of the housing mounting portion 3d and a housing-side mounting portion (not shown). And the motor bracket 3 is fixedly supported with respect to a housing (for example, a cowl top). In addition, flat housing attachment portions 12c and 13c are formed on the outer peripheral surfaces of the first and second sleeves 12 and 13, respectively, so as to protrude, and attachment seats 12d at the distal ends of the housing attachment portions 12c and 13 are provided. The first and second sleeves 12 and 13 are fixedly supported with respect to the housing by screwing 13d and a mounting portion (not shown) on the housing side.

  Such a wiper device conventionally employs an input load absorbing structure for protecting a collision object when the collision object collides with the wiper apparatus. One example thereof is the plate width direction provided in the housing attachment portions 12c and 13c for breaking when a load exceeding a preset load is applied to the pivot shafts 8 and 11 described in Patent Document 1. Long holes 12e and 13e. In general, instead of providing such long holes 12e and 13e, a concave shape is provided to make the wall thinner (so-called “meat stealing”).

  Note that the housing mounting portion 3d and the housing mounting portions 12c and 13c are generally formed by a die casting method in many cases.

JP 2002-356142 A

  According to the technique described in Patent Document 1, when a collision object collides with the pivot shafts 8 and 11, the thin-walled portion or the long holes 12e and 13e due to the stealing in the housing attaching portion 3d and the housing attaching portions 12c and 13c. The stress is concentrated on the fragile part caused by fracture, and the collision object and the wiper device are moved together to increase the movement stroke (energy absorption stroke) of the collision object and improve the protection performance (energy absorption performance) of the collision object. be able to.

  FIG. 5 is an explanatory diagram for explaining a collision portion of a collision object with respect to the wiper device. 6 is a cross-sectional view taken along the line ZZ in FIG. It is assumed that the wiper device 901 is attached to the cowl top 904 via the wiper bracket 902, the holder 903 provided on the wiper bracket 902, and the bush 903a. 6 also shows a windshield 905 positioned above the cowl top 904 and a cowl louver 906 sandwiched between the windshield 905 and a bonnet (not shown). The wiper bracket 902 is formed of a highly rigid member and is firmly attached to the cowl top 904 using the attachment member 907 so as not to vibrate when the vehicle travels. From the wiper bracket 902, a holder 903 projects forward of the vehicle. The holder 903 is attached with a housing attachment portion D (corresponding to the housing attachment portion 12c in Patent Document 1) of the wiper device 901 via the bush 903a.

  The damage described in Patent Document 1 (breaking of the housing mounting portion D due to the thinned portion due to the stealing of the meat or the weakened portion due to the long hole) can reduce the damage of the collision object because the collision object is in the vicinity of the pivot shaft P (see FIG. This is the case of collision with the area X) shown in FIG. Further, when a collision object collides with the region Y between the two pivot shafts P, the rod R extending between the two pivot shafts P bends, and damage to the collision object is reduced. However, when the collision object collides with the wiper bracket 902 and the vicinity thereof (region W shown in FIG. 5), the wiper bracket 902 does not move and is not easily damaged, so a moving stroke for reducing the load caused by the collision object is secured. Can not.

  Here, if a cushioning material is disposed between the cowl louver 906 and the wiper bracket 902, the impacted object may be damaged due to the collapse of the cushioning material at the time of collision. Further, when the rigidity of the wiper bracket 902 is lowered, the durability of the wiper device 901 is reduced and the wiper device 901 is broken. Further, even if the wiper bracket 902 is positioned downward or the cowl louver 906 is positioned upward in order to increase the distance between the collision object and the wiper bracket 902, the durability of the mounting member 907 is reduced and the breakage occurs.

  The present invention has been made in view of the above points, and an object thereof is to improve the protection performance of a collision object without changing the basic structure of the wiper device and the wiper bracket.

  The collision object protection structure of the present invention is located in a wiper storage space formed by a cowl top, and extends in a vehicle front-rear direction from a substantially center position in the vehicle width direction of the cowl top, and upward from the wiper bracket. A projecting holder part, a connecting part for connecting the holder part to a wiper device housed in at least one of the left and right sides in the vehicle width direction with respect to the wiper bracket in the wiper housing space, and a vehicle rear side in the holder part Wiper legs extending from the wiper bracket away from the outer periphery from the outer periphery.

  According to the present invention, the wiper legs absorb the collision load caused by the collision object, and the damage to the collision object H is reduced. Therefore, the protection performance of the collision object can be improved without changing the basic structure of the wiper device and the wiper bracket.

It is a top view of a collision object protection structure. It is the sectional view on the AA line of FIG. It is a B arrow line view of Drawing 2 showing a connecting part and a wiper leg. FIG. 3 is a view taken in the direction of arrow C in FIG. 2 showing a connecting portion and wiper legs. It is explanatory drawing for demonstrating the collision location of the collision object with respect to a wiper apparatus. FIG. 6 is a sectional view taken along line ZZ in FIG. 5.

  One embodiment will be described with reference to FIGS. 1 to 4. FIG. 1 is a plan view of the collision object protection structure 101. 2 is a cross-sectional view taken along line AA in FIG. A windshield 202 (omitted in FIG. 1), a cowl louver 203 (omitted in FIG. 1), and a hood (not shown) appear on the exterior of the vehicle 201. The cowl louver 203 extends from the lower end of the windshield 202 to the front side of the vehicle. The bonnet is located on the vehicle front side with respect to the cowl louver 203. A cowl top 204 is provided below the windshield 202 and the cowl louver 203. The cowl top 204 is long in the vehicle width direction. The cowl top 204 includes a first cowl top 204A and a second cowl top 204B. The first cowl top 204A extends in the vertical direction. The second cowl top 204B is connected to the front side of the vehicle with respect to the first cowl top 204A and extends in the vehicle front-rear direction. The cowl top 204 forms a wiper storage space 205 in which a wiper device 301 (described later) is stored.

  A wiper bracket 102 is disposed in the wiper storage space 205. The wiper bracket 102 includes a first wiper bracket 102A and a second wiper bracket 102B. The first wiper bracket 102A is fixedly attached by welding or the like at a substantially central position in the vehicle width direction of the first cowl top 204A. The second cowl top 204B is fixedly attached to the front end side of the first cowl top 204A by bolting, and extends in the vehicle front-rear direction along the second wiper bracket 102B. The second wiper bracket 102B is spot-welded to the second cowl top 204B. Both the first cowl top 204A and the second cowl top 204B are formed of a highly rigid sheet metal.

  A holder portion 103 is attached to the second wiper bracket 102B. The holder portion 103 includes a holder base portion 103A and a bush 103B. The holder base 103A protrudes upward from the second wiper bracket 102B. Specifically, the holder base 103A is attached to a downwardly inclined region 102Ba that inclines downward toward the front of the vehicle in the second wiper bracket 102B, and extends forward and upward of the vehicle. The bush 103B is disposed on the outer periphery of the holder base 103A.

  A wiper device 301 is disposed in the wiper storage space 205. The wiper device 301 has a wiper motor 302. A flat motor bracket 302 </ b> A is fixed to the wiper motor 302. A wiper frame 303 extends in the vehicle width direction from the motor bracket 302A. A pivot shaft 304 is provided at the tip of the wiper frame 303. Further, another pivot shaft 304 is provided on the side of the motor bracket 302A opposite to the wiper frame 303. A segment 305 extends from each pivot shaft 304. Either segment 305 is rotatable with respect to the pivot shaft 304. The wiper bracket 102 side segment 305 and the wiper motor 302 are connected by a drive rod 306. The drive rod 306 moves by driving the wiper motor 302. The two segments 305 are connected by a driven rod 307. A wiper arm and a wiper blade (both not shown) are attached to the wiper device 301, and the drive of the wiper motor 302 is transmitted to the wiper arm through each part such as the segment 305, and the wiper blade is slid on the windshield 202.

  Such a wiper device 301 is arranged in the wiper storage space 205 on the left side (driver's seat side) of the wiper bracket 102 in the vehicle width direction when viewed from the front of the vehicle. The wiper device 301 may be arranged on the right side (passenger seat side) in the vehicle width direction when the vehicle is viewed from the front.

  FIG. 3 is a view taken in the direction of arrow B in FIG. 2 showing the connecting portion 104 and the wiper leg portion 105. 4 is a view taken in the direction of arrow C in FIG. 2 showing the connecting portion 104 and the wiper leg portion 105. Please refer to FIG. 1 to FIG.

  The wiper device 301 and the holder portion 103 are connected by the connecting portion 104. The connecting portion 104 has a plate shape. A hole 104Aa is formed at one end (first end 104A) of the connecting portion 104. A pivot shaft 304 is fitted into the hole 104Aa. A cutout 104Ba is formed at the other end (second end 104B) of the connecting portion 104. The bush 103B of the holder portion 103 is fitted into the notch 104Ba. The first end 104A and the second end 104B are parallel to each other. A region (intermediate portion 104C) between the first end portion 104A and the second end portion 104B in the first end portion 104A is inclined with respect to the first end portion 104A and the second end portion 104B.

  A wiper leg 105 extends from the outer periphery 103 </ b> C on the vehicle rear side in the holder 103. The wiper leg portion 105 is inclined so as to move away from the wiper bracket 102 as it moves away from the outer periphery 103 </ b> C of the holder portion 103. The wiper leg portion 105 appears to overlap the wiper bracket 102 in a front view of the vehicle. The wiper leg 105 appears to overlap the wiper bracket 102 even in a plan view.

  Details of the connecting portion 104 and the wiper leg portion 105 will be described. The connecting portion 104 and the wiper leg portion 105 are integrally formed by die casting, and are easier to break than a sheet metal to be bent.

  The wiper leg portion 105 is inclined with respect to the vehicle front-rear direction so as to move away from the wiper device 301 toward the vehicle rear side in plan view. That is, the front end portion 105 </ b> A of the wiper leg portion 105 is offset from the virtual plane in the vehicle front-rear direction passing through the holder portion 103. Further, the distal end portion 105 </ b> A of the wiper leg portion 105 is further away from the wiper bracket 102 than the holder portion 103. In other words, it is positioned closer to the windshield 202 and the cowl louver 203 than the holder portion 103. Further, the front end portion 105A of the wiper leg portion 105 has a shape bent toward the rear side of the vehicle with the front end side fold portion 105Aa as a fold.

  The end portion (base end portion 105B) of the wiper leg portion 105 on the holder portion 103 side extends in parallel with the downward inclined region 102Ba of the wiper bracket 102 from the outer periphery 103C of the holder portion 103, and then the base end side fold portion 105Ba. It bends as a fold and extends away from the wiper bracket 102 therefrom.

  Between the holder part 103 and the base end side fold part 105Ba in the wiper leg part 105, a meat theft part 105C is formed. The meat stealing portion 105 </ b> C is formed when the connecting portion 104 and the wiper leg portion 105 are die-cast. Instead of this meat stealing portion 105C, a hole (not shown) may be provided.

  The wiper device 301 includes not only the connecting portion 104 described above, but also the second connecting portion 106 that connects the wiper frame 303 and the cowl top 204, and the pivot shaft 304 and the cowl top 204 that are far from the wiper bracket 102. It is fixed also by the 3rd connection part 107 which connects.

  In the collision object protection structure 101 configured as described above, when the collision object H (FIG. 2) collides with the front of the vehicle 201, the collision object H contacts the wiper leg 105 before colliding with the wiper bracket 102. . As a result, the wiper leg 105 absorbs the collision load caused by the collision object H, and damage to the collision object H is reduced. Thus, according to the collision object protection structure 101 of this embodiment, the protection performance of the collision object H can be improved without changing the basic structure of the wiper device 301 and the wiper bracket 102.

  Here, in the present embodiment, the distal end portion 105A of the wiper leg portion 105 has a shape bent toward the vehicle rear side so that the collision object H can be easily received. Further, the connecting portion 104 and the wiper leg portion 105 are integrally formed by die casting and are more easily broken than a sheet metal or the like, and when the load from the collision object H is more than a predetermined value, the holder portion 103 and the proximal side The wiper leg portion 105 is broken by the meat stealing portion 105C provided between the crease portion 105Ba. In the present embodiment, since the wiper leg portion 105 is broken, the wiper leg portion 105 is not crushed and the impact absorbing effect is not reduced.

DESCRIPTION OF SYMBOLS 101 Collision protection structure 102 Wiper bracket 103 Holder part 103C The outer periphery of the holder at the vehicle rear side 104 Connection part 105 Wiper leg part 105A End part of wiper leg part 105B Base end part (end part on the holder part side in the wiper leg part)
105Ba Base end side fold part 105C Meat stealing part (part which is easy to be broken)
201 Vehicle 204 Cowl top 205 Wiper storage space H Collision

Claims (4)

A wiper bracket located in a wiper storage space formed by the cowl top and extending in a vehicle front-rear direction from a substantially center position in the vehicle width direction of the cowl top;
A holder part protruding upward from the wiper bracket;
A connecting portion that connects the holder portion with the wiper device that is stored in at least one of the left and right sides in the vehicle width direction with respect to the wiper bracket in the wiper storage space;
A wiper leg extending from the outer periphery of the holder portion on the vehicle rear side so as to move away from the wiper bracket with increasing distance from the outer periphery;
Collision protection structure. The tip of the wiper leg has a shape that bends toward the vehicle rear side and receives a collision object from the vehicle front side,
The collision object protection structure according to claim 1. The end of the wiper leg on the holder portion side extends from the outer periphery of the holder portion substantially in parallel with the wiper bracket, and then bends with a fold on the proximal end side as a fold, and further away from the wiper bracket. Elongate,
The region between the holder part and the base end side fold part in the wiper leg part is easily broken.
The collision object protection structure according to claim 1 or 2. The connecting portion and the wiper leg are integrally formed by die casting.
The collision object protection structure according to any one of claims 1 to 3.

Images