JP4481763B2 - Automobile wiper module mounting structure - Google Patents

Description

  The present invention relates to a body mounting structure for a wiper module that wipes rainwater or the like adhering to a windshield of an automobile.

  A wiper module for an automobile wipes away rainwater adhering to a window glass to improve visibility, and is generally housed in a cowl panel that defines a vehicle compartment and an engine compartment. In this type of wiper module, a pivot holder that pivotally supports a pivot shaft is disposed at both ends of a frame member extending in the vehicle width direction, and a wiper motor is disposed at a center portion in the vehicle width direction of the frame member. The left and right pivot shafts are connected by a link mechanism.

  On the other hand, from the viewpoint of absorbing the impact force on the collided object when the collided object falls on the cowl panel at the time of a vehicle collision, the front wall of the cowl panel has a gentle angle from the front end in the vehicle front-rear direction to the bottom wall. An inclined structure may be employed.

  By the way, when it is set as the structure which inclines the said front wall gently, there exists a possibility that a front wall may deform | transform downward by the drive force of a wiper motor, and will raise what is called a mouth opening. For example, when the wiper arm is locked due to snow accumulation or freezing, the driving force of the wiper motor acts in the direction of pushing down the front wall of the cowl panel via the pivot holder, which makes it easier to open the mouth.

In order to prevent such opening of the cowl panel, for example, in Patent Document 1, a bridge plate is bridged over the opening between the front wall and the rear wall of the cowl panel, and a wiper module is attached to the bridge plate. Adopting a mounting structure.
JP 2002-337668 A

  However, when a structure in which a bridge plate is bridged over and coupled to the opening of the cowl panel as described above is adopted, the rigidity of the opening of the cowl panel becomes higher than necessary, and the object to be collided at the time of the vehicle collision There is a risk that it will not be possible to sufficiently absorb the impact force on.

  The present invention has been made in view of the above-described conventional situation, and provides a vehicle body mounting structure for an automotive wiper module that can prevent a mouth opening due to a driving force of a wiper motor while ensuring an impact force absorbing function of a cowl panel. It is aimed.

According to the first aspect of the present invention, the front wall of the cowl panel that extends in the vehicle width direction, defines the vehicle compartment and the engine compartment, and opens upward, and has a generally concave cross section, extends from the vehicle front-rear direction front end to the bottom wall. A frame member extending in the vehicle width direction in the cowl panel, a pivot holder fixed to both ends of the frame member and rotatably supporting a pivot shaft to which a wiper arm is fixed, and the frame member A wiper module fixed to the central portion in the longitudinal direction and having a wiper motor that rotates the pivot shafts via a link mechanism is housed, the wiper motor is fixed to the rear wall of the cowl panel, and the pivot holder on the one side A wiper module for automobiles in which the front wall of the cowl panel is fixed to the vehicle width direction end and the other side pivot holder is fixed to the front wall of the front wall in the vehicle width direction. In the vehicle body mounting structure for Lumpur,
The other side pivot holder is provided with a leg portion extending to the rear wall of the cowl panel, the leg portion is fixed to the rear wall, and the fixing portion to the rear wall of the leg portion is the pivot on the other side. It is characterized by being positioned rearward and upward in the vehicle front-rear direction with respect to the fixing portion to the front wall of the holder .

According to a second aspect of the present invention, in the first aspect, at least a portion of the front wall of the cowl panel to which the pivot holder on the other side is fixed is formed with a concave portion that bulges upward. It is characterized in that the starting point of bending against impact force applied from the upper wall.

  According to the vehicle body mounting structure of the wiper module according to the invention of claim 1, the leg portion extending to the rear wall is provided to the pivot holder on the other side fixed to the center portion of the front wall of the cowl panel, and fixed to the rear wall. Thereby, since the input from the wiper motor in the opening direction acting on the front wall is dispersed in the direction along the front wall surface, deformation due to opening of the cowl panel can be prevented. That is, when the pivot holder and the leg are stretched between the front wall and the rear wall, the input of the opening direction applied to the front wall of the cowl panel can be converted into a substantially parallel direction along the front wall surface. The motor driving force can be prevented from concentrating on the front wall.

  In addition, since the leg part fixed to the rear wall is formed on the pivot holder fixed to the center part of the front wall, the front wall bends downward with the pivot holder fixing part as a fulcrum against the impact force at the time of vehicle collision. It absorbs, and it is possible to secure the function of absorbing the impact force on the collision object.

  In the invention of claim 2, since the upward recessed portion is formed in the pivot holder fixing portion of the front wall of the cowl panel, the recessed portion becomes a starting point of bending with respect to the impact force at the time of the vehicle collision, and the input from the wiper motor Has a function of dispersing in the longitudinal direction of the vehicle. As a result, it is possible to increase the rigidity of the pivot holder fixing portion with respect to the input from the wiper motor while ensuring the absorbing function of the impact force, and to prevent the cowl panel from opening more reliably.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  1 to 5 are views for explaining a vehicle body mounting structure of an automobile wiper module according to an embodiment of the present invention. FIG. 1 is a plan view of a cowl panel in which the wiper module is accommodated, and FIG. Fig. 3 is a sectional view taken along line II-II in Fig. 1, Fig. 3 is a sectional view taken along line III-III in Fig. 1, Fig. 4 is a sectional view taken along line IV-IV in Fig. 1, and Fig. 5 is a plan view of the wiper module.

  In the figure, reference numeral 1 denotes a cowl panel extending in the vehicle width direction. The cowl panel 1 defines a vehicle interior A and an engine compartment B with a dash panel 2 joined to the lower surface of the cowl panel 1. ing.

  A hood 3 is disposed on the front side of the cowl panel 1 so as to open and close the upper portion of the engine compartment B. The hood 3 is formed by coupling the outer panel 3a and the inner panel 3b by hemming, and is supported by a hinge member (not shown) attached to the vehicle body side so as to be opened and closed in the vertical direction around the hinge center 3c. (See FIG. 4).

  The cowl panel 1 includes a cowl inner 5 that opens upward and a cowl outer 6 that covers the rear half of the upper end opening of the cowl inner 5. The rear flanges 5 a and 6 a of the cowl inner 5 and the cowl outer 6 are spots. They are joined by welding. The cowl panels 1 are joined to the left and right openings of the cowl panel 1 with cowl sides 4 and 4 that close the opening, and the left and right cowl sides 4 are connected to front pillars (not shown) extending in the vertical direction. Has been.

  A lower end portion 8 a of the windshield 8 is supported by the front flange 6 b of the cowl outer 6. The front half of the upper end opening of the cowl inner 5 is covered with a resin cowl louver 7. The rear end portion 7a of the cowl louver 7 is in contact with the lower edge portion 8a of the windshield 8, and a weather strip 9 for sealing between the hood 3 and the front end portion 7b is mounted.

  The cowl inner 5 has a front wall 5c, a rear wall 5d, and a bottom wall 5e, and has a substantially concave cross section. A front flange 5b of the front wall 5c has a cushioning material 40 interposed therebetween, and a front end 7b of the cowl louver 7 is interposed therebetween. Support.

  The rear wall 5d extends in a substantially vertical direction, and a rear flange 5a is bent at the upper end of the vehicle. The dash panel 2 is joined to the lower surface of the bottom wall 5e.

  The front wall 5c is gently inclined from the front flange 5b at the front end in the vehicle front-rear direction to the bottom wall 5e, and the inclination angle becomes smaller from the both ends in the vehicle width direction toward the center. Thus, the front wall 5c is gently inclined to absorb the impact force applied from above.

  A wiper module 10 is accommodated in the cowl panel 1. The wiper module 10 is connected and fixed to a frame member 11 extending in the vehicle width direction formed by crushing a part of a steel pipe material, and left and right end portions 11a and 11b of the frame member 11, and a wiper arm (not shown) Left and right pivot holders 14 and 15 that rotatably support the pivot shafts 12 and 13 to be fixed, a wiper motor unit 16 fixed to the longitudinal center portion 11c of the frame member 11, the wiper motor unit 16 and the left , And a link mechanism 17 for connecting the right pivot shafts 12 and 13 to each other.

  The wiper motor unit 16 has a structure in which a wiper motor 19 is fixed to a unit case 18 in which a speed reduction mechanism (not shown) is built, and the unit case 18 is fixedly supported by the frame member 11. Further, the wiper motor 19 is disposed with its axis lined in the vehicle width direction so as to be substantially parallel to the frame member 11, and is displaced to the left from the longitudinal center of the frame member 11.

  The link mechanism 17 includes rotating levers 20 and 20 connected to the left and right pivot shafts 12 and 13 and both end portions 21a and 21a of the drive lever 21 connected to the rotating shaft 16a of the wiper motor unit 16. The left and right link rods 22 and 22 are connected.

  The wiper module 10 transmits the rotation of the wiper motor unit 16 to the left and right pivot shafts 12 and 13 via the link mechanism 17, and is a rubber wiper blade (not fixed) that is slidably contacted with the windshield 8 by the pivot shafts 12 and 13. By swinging left and right in the figure, the rainwater adhering to the windshield 8 is wiped off to improve the field of view.

  The wiper module 10 is disposed such that the wiper motor 19 is positioned on the rear side of the vehicle with respect to the left and right pivot shafts 12 and 13 and the frame member 11. Further, the wiper module 10 is disposed between the cowl inner 5 and the cowl outer 6 as viewed from the side of the vehicle and on the vehicle rear side from the lower end portion 8 a of the windshield 8. Thereby, when the colliding object F falls between the hood 3 and the windshield 8 due to a vehicle collision, the interference with the wiper module 10 is avoided.

  In the wiper module 10, the wiper motor unit 16 is fixed to the rear wall 5d of the cowl inner 5, and when viewed from the front of the vehicle, the left (one side) pivot holder 14 is arranged in the vehicle width direction of the front wall 5c of the cowl inner 5. The right (other side) pivot holder 15 is fixed to the left end portion at the center portion in the vehicle width direction of the front wall 5c, and has the following structure in detail.

  As shown in FIGS. 1 and 4, a first mounting bracket 25 made of sheet metal is disposed at the left end portion of the front wall 5 c of the cowl inner 5. The first mounting bracket 25 is disposed at an intermediate portion in the vertical direction of the front wall 5c, and a front side portion 25b bent at the front edge of the mounting seat 25a is joined to the front wall 5c by spot welding, and the mounting seat A left side portion 25c bent at the left edge of 25a is fixed to the cowl side 4 by spot welding.

  As shown in FIGS. 1 and 3, a second mounting bracket 26 is disposed between the cowl outer 6 and the rear wall 5 d of the cowl inner 5. This second mounting bracket 26 is joined to the cowl outer 6 by spot welding with a front side portion 26c formed by bending at the front edge of the mounting seat 26b in which the fitting recess 26a is formed by burring, and the rear of the mounting seat 26b. The rear side portion 26d bent at the edge is fixed to the rear wall 5d by spot welding.

  As shown in FIGS. 1 and 2, a third mounting bracket 27 is disposed in the vicinity of the vehicle center C in the vehicle width direction central portion of the front wall 5 c of the cowl inner 5. The third mounting bracket 27 has a structure in which a flange portion 27b is integrally formed on an outer peripheral edge of a downward-facing hook-shaped mounting seat 27a. It is fixed by spot welding to the front wall 5c.

  A concave portion 5g that bulges upward is formed at the center of the front wall 5c in the vehicle width direction. The concave portion 5g has a horizontal portion 5h that is substantially horizontal following the front wall 5c, and an inclined portion 5j that extends from the rear end of the horizontal portion 5h to the bottom wall 5e, and the inclined portion 5j extends from the horizontal portion 5h. The mounting bracket 27 is disposed so as to extend over the distance.

  A fourth mounting bracket 28 is disposed on the rear wall 5 d of the cowl inner 5 behind the third mounting bracket 27. The fourth mounting bracket 28 has a mounting seat 28a extending forward from the rear wall 5d, and three rear side portions 28b formed on the rear edge of the mounting seat 28a are interposed between the rear flanges 5a and 6a. The left and right side portions 28c and 28c are joined together by spot welding, and are fixed to the rear wall 5d by spot welding.

  A protrusion 18a is formed on the rear wall portion of the unit case 18 of the wiper module 10 so as to protrude rearward of the vehicle. The protrusion 18 a is fitted in the fitting recess 26 a of the second mounting bracket 26, whereby the wiper motor unit 16 is fixed to the rear wall 5 d of the cowl inner 5 and the cowl outer 6 via the second mounting bracket 26. .

  The left pivot holder 14 is integrally formed with a mounting portion 14a extending to the front left outer side. The mounting portion 14 a is fastened and fixed to the mounting seat 25 a of the first mounting bracket 25 by a bolt 30. Accordingly, the pivot holder 14 is fixed to the front wall 5c via the first mounting bracket 25.

  The right pivot holder 15 is integrally formed with a mounting portion 15a extending to the right outside. The mounting portion 15 a is fastened and fixed to the mounting seat 27 a of the third mounting bracket 27 by a bolt 31. Thus, the pivot holder 15 is fixed to the front wall 5c via the third mounting bracket 27.

  The right pivot holder 15 is integrally formed with a leg portion 15b that is bent and extends in a step-down manner at the rear of the vehicle following the attachment portion 15a. The leg portion 15b is fastened and fixed to the mounting seat 28a of the fourth mounting bracket 28 by a bolt 32.

  By fixing the bifurcated mounting portion 15a and the leg portion 15b formed on the right pivot holder 15 in this way to the front wall 5c and the rear wall 5d, respectively, in the opening direction a acting on the front wall 5c. The input from the wiper motor 19 is dispersed in the b direction along the front wall 5c.

  According to this embodiment, the leg portion 15b extending to the rear wall 5d is integrally formed with the attachment portion 15a of the pivot holder 15 fixed to the center portion of the front wall 5c of the cowl inner 5, and the leg portion 15b is formed as the fourth attachment bracket 28. Since the input from the wiper motor 19 in the opening direction a acting on the front wall 5c in the b direction along the front wall 5c is dispersed in the b direction along the front wall 5c. Deformation due to opening can be prevented. That is, when the attachment portion 15a and the leg portion 15b of the pivot holder 15 are stretched between the front wall 5c and the rear wall 5d, the input in the opening direction a applied to the front wall 5c of the cowl inner 5 is made along the front wall surface. Therefore, the motor driving force can be prevented from concentrating on the front wall 5c.

  In addition, since the leg portion 15b fixed to the rear wall 5d is integrally extended to the mounting portion 15a of the pivot holder 15 fixed to the front wall 5c, the upper wall 5c is protected against the impact force in the event of a vehicle collision. The half part is absorbed by bending downward with the fixed part of the pivot holder 15 as a fulcrum, and the function of absorbing the impact force to the collision object can be secured.

  In the present embodiment, since the concave portion 5g that bulges upward is formed in the portion of the front wall 5c of the cowl inner 5 that faces the pivot holder 15, the concave portion 5g becomes a starting point of bending with respect to the impact force at the time of a vehicle collision. The input from the wiper motor 16 has a function of dispersing in the vehicle longitudinal direction. As a result, it is possible to increase the rigidity of the mounting portion of the pivot holder 15 with respect to the input from the wiper motor 19 while securing the absorbing function of the impact force, and to more reliably prevent the cowl panel 1 from opening.

It is a top view of the cowl panel in which the wiper module by one embodiment of the present invention was stored. It is the II-II sectional view taken on the line of FIG. It is the III-III sectional view taken on the line of FIG. It is the IV-IV sectional view taken on the line of FIG. It is a top view of the said wiper module.

Explanation of symbols

1 cowl panel 5 cowl inner 5c front wall 5d rear wall 5e bottom wall 5g recess 10 wiper module 11 frame member 12, 13 pivot shaft 14, 15 pivot holder 15b leg 16 wiper motor unit 17 link mechanism 19 wiper motor A vehicle compartment B engine compartment

Claims (2)

A cowl panel that extends in the vehicle width direction to define a vehicle compartment and an engine compartment, and that opens upward, has a substantially concave cross-sectional front wall that is gently inclined from the vehicle front-rear direction front end to the bottom wall. Inside, a frame member extending in the vehicle width direction, a pivot holder fixed to both ends of the frame member and pivotally supporting a pivot shaft to which the wiper arm is fixed, and a central portion in the longitudinal direction of the frame member are fixed. A wiper module having a wiper motor that rotationally drives each pivot shaft via a link mechanism, fixing the wiper motor to the rear wall of the cowl panel, and fixing the one side pivot holder to the front wall of the cowl panel A vehicle wiper module mounted on the vehicle body with the other side pivot holder fixed at the vehicle width direction end of the front wall in the vehicle width direction center of the front wall. In concrete,
The other side pivot holder is provided with a leg portion extending to the rear wall of the cowl panel, the leg portion is fixed to the rear wall, and the fixing portion to the rear wall of the leg portion is the pivot on the other side. The vehicle body mounting structure for an automobile wiper module, wherein the vehicle wiper module is positioned rearward and upward in the vehicle front-rear direction with respect to the fixing portion of the holder to the front wall . 2. The front wall of the cowl panel according to claim 1, wherein at least a portion on which the other pivot holder is fixed is formed with a concave portion that bulges upward, and the concave portion has an impact force applied from above the front wall. body mounting structure of the wiper module for a motor vehicle, characterized in that the starting point of bending for.

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