JP4419862B2 - Vehicle wiper support structure - Google Patents

Description

  The present invention relates to a vehicle wiper mounting structure.

  FIG. 3 is a perspective view schematically showing the front portion of the vehicle provided with a wiper, and FIG. 4 is a cross-sectional view (a cross-sectional view taken in the direction of arrow A in FIG. 3) showing the support structure of the wiper. FIG. 5 is a sectional view showing another conventional wiper support structure.

  A general vehicle wiper support structure is a structure as shown in FIG.

  That is, in the conventional wiper support structure shown in FIG. 4, the wiper motor 2 and the wiper link mechanism (not shown) that transmits the rotational force of the wiper motor 2 to the wiper arm 3 are accommodated in the closed cross section 1 a of the cowl top 1. Has been. A wiper blade 7 is attached to the tip of the wiper arm 3, and this wiper blade 7 rotates around the rotation axis 4 together with the wiper arm 3 by the rotation of the wiper motor 2, so that it adheres to the windshield 8 of the vehicle. The water drops are wiped off. The wiper arm rotation shaft 4 is rotatably supported by the cowl top closed cross-sectional portion 1 a via a bearing (wiper pivot) 5. Further, a phosphorus hose 6 is fixed inside the cowl top closed cross section 1a, and the support rigidity of the wiper arm rotating shaft 4 is reinforced by the phosphorus hose 6.

  With such a wiper support structure, sufficient support rigidity can be secured against displacement caused by the rotation of the wiper arm 3. However, a wiper motor or a wiper link mechanism may be disposed outside the cowl top closed section as shown in FIG.

  That is, in the conventional wiper support structure shown in FIG. Has been placed. A wiper blade 17 is attached to the tip of the wiper arm 13, and the wiper blade 17 rotates around the rotation shaft 14 together with the wiper arm 13 by the rotation of the wiper motor 12, so that the windshield 18 of the vehicle The attached water droplets are wiped off. The wiper arm rotation shaft 14 is rotatably supported by an extension portion 11b extending from the cowl top closed section 11a via a bearing (wiper pivot) 15. Further, a phosphorus hose 16 is fixed to the lower surface of the cowl top extending portion 11b, and the support rigidity of the wiper arm rotating shaft 14 is reinforced by the phosphorus hose 16.

  Examples of prior art documents in which a wiper support structure of a vehicle and a vehicle body structure related thereto are disclosed include the following.

JP-A-9-95261 JP-A-5-278636 Japanese Patent Publication No. 8-32521

  However, the conventional wiper support structure shown in FIG. 5 can secure a certain degree of support rigidity against displacement caused by the rotation of the wiper arm 13, but the wiper arm rotation shaft 14 is cantilevered. 4 is weaker than the wiper support structure of FIG. 4, and in particular, as the distance L from the cowl top closed section 11a to the wiper arm rotation shaft 14 becomes longer as shown in FIG. 6, it becomes more difficult to ensure the support rigidity. Become. For this reason, in the conventional wiper support structure as shown in FIG. 5, there is a restriction on the distance L from the cowl top closed section 11a with respect to the attachment position of the wiper arm rotating shaft 14, and this is a free design and layout. It was a restriction.

  Therefore, in view of the above circumstances, the present invention can ensure high support rigidity with respect to the wiper arm rotation shaft even if the wiper arm rotation shaft is separated from the cowl top closed cross-section, and the rigidity of other portions can be secured. It is an object of the present invention to provide a vehicle wiper support structure that can be improved.

The vehicle wiper support structure of the present invention that solves the above problems includes a cowl top that extends in the vehicle width direction along the lower end of the windshield,
A strut house which is a vehicle body skeleton member located below the closed cross section of the cowl top;
A stay having an upper end connected to the front side of the closed cross section of the cowl top and a lower end connected to the front side of the strut house;
A dash panel having an upper end connected to the rear side of the closed cross section of the cowl top and a lower end connected to the rear side of the strut house;
The wiper arm rotating shaft in the stay is rotatably supported via a wiper arm bearing, and the cowl top, the dash panel, the strut house, and the stay form an annular structure,
It is characterized by.

According to the vehicle wiper support structure of the present invention , a cowl top that extends in the vehicle width direction along the lower end portion of the front glass, and a strut house that is a vehicle body skeleton member positioned below the closed cross-sectional portion of the cowl top; The upper end side is connected to the front side of the closed cross section of the cowl top, and the lower end side is connected to the front side of the strut house, and the upper end side is connected to the rear side of the closed cross section of the cowl top, And a stay having a lower end connected to the rear surface side of the strut house, and the wiper arm rotation shaft is rotatably supported by the stay via the wiper arm bearing, so that the wiper arm rotation shaft is supported. The stay to be supported is not cantilevered, but both ends are supported by the cowl top closed cross section and the vehicle body skeleton member (strut house). When located away from the top closed cross-section portion also, the stay, it is possible to secure a high supporting rigidity for the wiper arm pivot axis by the cowl top closed-section portion and the vehicle body frame member (struts house). Accordingly, since there is no restriction on the distance from the cowl top closed cross section with respect to the attachment position of the rotation axis of the wiper arm, more flexible design and layout are possible. In addition, since equipment such as a deck garnish and a lamp housing can be attached to the stay, the assembling accuracy of the equipment is improved as compared with the case where the equipment is attached to different support members.

Further, according to the wiper support structure for a vehicle of the present invention, since the pre-Symbol cowl top and the dash panel and the strut house and the stay forms a cyclic structure, displacement by rotation of the wiper arm, the cowl top The displacement of the closed section (body cabin) and the displacement of the strut house due to the input from the road surface can be effectively suppressed by the cowl top, the dash panel, the strut house, and the stay being linked to each other. Therefore, by providing the stay, not only the rigidity of the wiper support structure can be improved, but also the rigidity of the surrounding vehicle body structure can be improved.

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

  FIG. 1 is a perspective view showing a state in which a vehicle wiper support structure according to an embodiment of the present invention is viewed from the left front side of the vehicle, and FIG. Figure).

<Configuration>
As shown in FIGS. 1 and 2, a cowl top 22, which is a vehicle body skeleton member, is provided below the windshield 21 of the vehicle. The cowl top 22 has a cowl top outer panel 22a positioned on the front side (vehicle front side), a cowl top inner panel 22b positioned on the rear side (vehicle rear side), and a cowl top lower panel 22c positioned on the lower side (vehicle lower side). And a cowl top closed section 22d formed by these panels 22a, 22b, and 22c.

  The cowl top closed cross section 22d extends in the vehicle width direction along the lower end of the windshield 21. The wiper motor 36 and the wiper link mechanism that transmits the rotational force of the wiper motor 36 to the wiper arm 26 are disposed outside the cowl top closed section 22d (details will be described later). Note that the cowl top closed section 22d is not necessarily formed by the three panels 22a, 22b, and 22c as shown in the drawing. For example, the cowl top closed cross section 22d is formed by coupling a cowl top outer panel and a cowl top inner panel. You may do it.

  Further, on the rear surface (vehicle rear side surface) 22e side of the cowl top closed cross-section portion 22d, an extension portion 22c-1 extending from the cowl top closed cross-section portion 22d to the vehicle rear side and bent downward is provided. Yes. The cowl top extension 22c-1 is a part of the cowl top lower panel 22c. For example, a member separate from the cowl top closed section 22d may be connected to the cowl top closed section 22d. A dash panel 23 that partitions the vehicle compartment and the engine compartment of the vehicle is connected to the cowl top extension 22c-1. The upper end side of the dash panel 23 is connected to the cowl top extending portion 22c-1 (that is, the rear surface 22e side of the cowl top closed section 22d) by welding or the like, and the lower end side of the dash panel 23 is a strut house 24 as a vehicle body skeleton member. It is connected to the rear surface (vehicle rear surface) 24a side by welding or the like.

  The strut house 24 is located below (directly below) the cowl top closed section 22d, and supports a strut type front suspension 47 accommodated therein.

  The connection between the upper end side of the dash panel 23 and the cowl top closed section 22d is not necessarily connected to the rear surface 22e side of the cowl top closed section 22d via the cowl top extending section 22c-1 as shown in the drawing. For example, the upper end side of the dash panel 23 may be extended without being provided with the cowl top extending portion 22c-1, and directly connected to the rear surface 22e side of the cowl top closed section 22d. Further, regarding the connection between the lower end side of the dash panel 23 and the strut house 24, the rear surface 24a of the strut house 24 is integrated with the dash panel 23 from the middle in the illustrated example, but is not necessarily limited thereto. The rear surface 24a of the strut house 24 may be extended downward to be separated from the dash panel 23, and the two may be connected by welding or the like at an appropriate position.

  The cowl top closed section 22d and the strut house 24 are connected by a stay 25, and the rotation shaft 27 of the wiper arm 26 is rotatably supported by the stay 25 via a bearing (wiper pivot) 28. ing.

  The stay 25 is an elongated plate-like support member extending in the vertical direction. The upper end side of the stay 25 is connected to the front surface (front surface of the vehicle) 22f of the cowl top closed section 22d, and the lower end side of the stay 25 is the front surface of the strut house 24 ( Vehicle front side surface) 24b side. Therefore, a structure (annular structure) in which the stay 25, the cowl top 22, the dash panel 23, and the strut house 24 are connected in an annular shape is formed. Although the shape of the stay 25 is a square shape in the illustrated example, it is not necessarily limited to this, and may be an appropriate shape according to the arrangement of surrounding members, for example, an arc shape or a straight line It may be a shape.

  A bracket 32 is connected to the front surface 22f side of the cowl top closed section 22d by welding or the like, and the upper end side of the stay 25 is fastened to the bracket 32 by bolts 33a and 33b. The lower end side of the stay 25 is fastened to the front surface 24b side of the strut house 24 by a bolt 33c. Not limited to this, the upper end side of the stay 25 may be directly connected to the front face 22f side of the cowl top closed section 22d by a bolt, welding, or the like without passing through the bracket 32. Further, the lower end side of the stay 25 may be connected to the front surface 24b side of the strut house 24 by welding or the like, or may be connected to the front surface 24b side of the strut house 24 via a bracket.

  The wiper arm bearing 28 is provided integrally with a bearing bracket 29 having a V-shaped portion 29c. Both end portions 29a and 29b of the bearing bracket 29 are elastically supported by bolts 31a and 31b to absorb fine vibrations. It is fastened to the stay 25 via the rubber members 30a and 30b. That is, the wiper arm bearing 28 is connected to the stay 25 via the bracket 29. The bearing bracket 29 is also provided with an auxiliary wiper arm bearing 42, and the stay 25 also supports the rotating shaft 46 of the auxiliary wiper arm 43 through the wiper arm bearing 42 so as to be rotatable. . However, the present invention is not limited to this, and the wiper arm bearings 28 and 42 may be provided directly on the stay 25. Furthermore, the wiper support structure of the present invention is applied to a wiper that does not have the auxiliary wiper arm bearing 42 or the wiper arm 43. Can be applied.

  Further, a phosphorus hose 34 extending from the stay 25 to the inside of the cowl top extension 22c-1 is provided inside the stay 25. The front end side of the phosphorus hose 34 is connected to the upper end side of the stay 25, and the rear end side of the phosphorus hose 34 is connected to the cowl top extension 22c-1 by welding or the like. In the illustrated example, the front end side of the phosphorus hose 34 is fastened to the bracket 32 together with the stay 25 by a bolt 33b, and is fastened to the bracket 32 together with the stay 25, the rubber member 30a and the bearing bracket 29 by a bolt 31a.

  On the other hand, the wiper motor 36 is disposed at a position away from the wiper arm bearing 28 in the vehicle width direction, and the motor bracket 37 holding the wiper motor 36 and the bearing bracket 29 are connected by a pipe frame 38. . The motor bracket 37 is attached to the cowl top 22 via a phosphorus hose 45. The motor bracket 37 is provided with a disk 39, and the rotational force of the wiper motor 36 is transmitted to the disk 39 via a gear (not shown) so that the disk 39 rotates. On the other hand, one end of a link 40 is connected to the wiper arm rotation shaft 27. Then, both end portions of the link arm 41 are rotatably connected to the other end portion of the link 40 and the outer peripheral portion of the disk 39, respectively.

  Accordingly, when the disk 39 is rotated as indicated by the arrow J by the wiper motor 36, the link arm 41 is reciprocated in the vehicle width direction as indicated by the arrow D, and the wiper arm rotation shaft 27 is moved together with the link 40 as indicated by the arrow E. Rotate. As a result, the wiper blade 44 attached to the tip of the wiper arms 26 and 43 rotates with the wiper arms 26 and 43 as indicated by the arrow F, and wipes off water droplets adhering to the windshield 21 of the vehicle.

<Effect>
As described above, according to the vehicle wiper support structure of the present embodiment, the cowl top closed section 22d extending in the vehicle width direction along the lower end portion of the windshield 21, and the cowl top closed section. The strut house 24 positioned below 22d is connected by a stay 25 having an upper end connected to the cowl top closed section 22d and a lower end connected to the strut house 24. In this stay 25, the wiper arm rotating shaft 27 is connected. The following operational effects can be obtained by rotatably supporting the wiper arm bearing 28.

  That is, the stay 25 that supports the wiper arm rotating shaft 27 is not cantilevered, and both ends are supported by the cowl top closed section 22d and the strut house 24. Even when it is disposed at a position away from the portion 22d, the stay 25, the cowl top closed section 22d and the strut house 24 can ensure high support rigidity for the wiper arm rotation shaft 27. Therefore, since there is no restriction on the distance from the cowl top closed section 22d with respect to the attachment position of the wiper arm rotation shaft 27, a more free design and layout are possible. In addition, since equipment such as a deck garnish and a lamp housing can be attached to the stay 25, the assembling accuracy of the equipment is improved as compared with the case where the equipment is attached to different support members.

  In this case, the connection destination on the lower end side of the stay is not necessarily limited to the strut house 24. If there is an appropriate vehicle body skeleton member other than the strut house below the cowl top closed section 22d, the lower end side of the stay May be connected to the body frame member.

  In addition, according to the vehicle wiper support structure according to the present embodiment, the upper end side and the lower end side of the stay 25 are connected to the front surface 22f side of the cowl top closed section 22d and the front surface 24b side of the strut house 24, respectively. The upper end side and the lower end side of the dash panel 23 are connected to the rear surface 22e side of the cowl top closed section 22d and the rear surface 24a side of the strut house 24, respectively, so that the cowl top 22, dash panel 23, strut house 24 and stay 25 are connected. And the annular structure, the displacement due to the rotation of the wiper arm 26 as indicated by the arrow G, the displacement of the cowl top closed section 22d (body cabin) as indicated by the arrow H, and the arrow I The displacement of the strut house 24 by the input from the road surface as shown in FIG. Graphics and 24 and the stay 25 can be prevented effectively in conjunction with each other. Therefore, by providing the stay 25, not only the rigidity of the wiper support structure can be improved, but also the rigidity of the surrounding vehicle body structure can be improved.

  Although the above shows an example in the case of a vehicle with a single front wiper (see FIG. 3), it is of course not limited to this, and the wiper support structure of the present invention is also applicable to a vehicle with two wipers. can do.

  The present invention relates to a wiper support structure for a vehicle, and is particularly useful when applied to improve the support rigidity of a wiper arm rotating shaft and the rigidity of a surrounding vehicle body structure.

It is a perspective view which shows the state which looked at the wiper support structure of the vehicle which concerns on the embodiment of this invention from the left front of the vehicle. It is sectional drawing (B direction arrow sectional drawing of FIG. 1) of the said wiper support structure. It is a perspective view which shows the outline of the vehicle front part provided with the wiper. It is sectional drawing (A direction arrow sectional drawing of FIG. 3) which shows the support structure of the said wiper. It is sectional drawing which shows the other conventional wiper support structure. It is sectional drawing which shows the other conventional wiper support structure.

Explanation of symbols

21 Front glass 22 Cowl top 22a Cowl top outer panel 22b Cowl top inner panel 22c Cowl top lower panel 22c-1 Cowl top extension 22d Cowl top closed section 22e Rear surface of cowl top closed section 22f Front of cowl top closed section 23 Dash panel 24 Strut house 24a Rear surface of strut house 24b Front surface of strut house 25 Stay 26 Wiper arm 27 Wiper arm rotation shaft 28 Wiper arm bearing 29 Bearing bracket 29a, 29b Bearing bracket tip 29c Bearing bracket V-shaped portion 30a , 30b Rubber member 31a, 31b Bolt 32 Bracket 33a, 33b, 33c Bolt 34 Phosphorus hose 36 Wiper motor 37 Motor bracket 3 Pipe frame 39 a disc 40 link 41 link arm 42 wiper arm bearing 43 wiper arm 44 wiper blade 45 the reinforcement 46 wiper arm rotating shaft 47 front suspension

Claims (1)

A cowl top extending in the vehicle width direction along the lower end of the windshield,
A strut house which is a vehicle body skeleton member located below the closed cross section of the cowl top;
A stay having an upper end connected to the front side of the closed cross section of the cowl top and a lower end connected to the front side of the strut house;
A dash panel having an upper end connected to the rear side of the closed cross section of the cowl top and a lower end connected to the rear side of the strut house;
The wiper arm rotating shaft in the stay is rotatably supported via a wiper arm bearing, and the cowl top, the dash panel, the strut house, and the stay form an annular structure,
A vehicle wiper support structure.

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