JP2014141208A - Fitting structure for wiper bracket - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fitting structure for a wiper bracket that can reduce external force applied to the wiper bracket more easily.SOLUTION: A wiper bracket 25 is arranged in a front compartment 3 located in a vehicle body front across a dash panel 5 with respect to a cabin 1, and an end 41c of a first connection member 41 on a vehicle body front left side is fixed to a side face 15a on a vehicle body front side of a strut tower 15 via a first fitting piece 45. Further, the wiper bracket 25 has an end 43c of a second connection member 43 on a vehicle body front right side fixed to a dash cross member 9 in the front of the dash panel 5 via a second fitting piece 49. Furthermore, a rear end bent part 27a on a vehicle body rear side of the wiper bracket 25 is fixed to a front bent part 5a of the dash panel 5 via a third fitting piece 53. The second connection member 43 has a cut recessed part 43b1 and bends to deform at the cut recessed part 43b1 as a starting point in a case of a vehicle front collision.

Description

  The present invention relates to a mounting structure for a wiper bracket that supports a wiper used in a vehicle.

  2. Description of the Related Art Conventionally, a structure in which a pivot shaft to which a wiper arm and a blade of a wiper device are attached is rotatably supported by a wiper bracket, and the wiper bracket is attached to a vehicle body member at the front of a vehicle (see Patent Document 1). In this mounting structure, a slit that opens toward the front window is formed in the mounting hole into which the mounting bolt of the wiper bracket is inserted, and the vehicle body receives a rear collision load in the event of a frontal collision of the vehicle. Moves along the slit so as to be detached from the wiper bracket. Thereby, the external force applied to the wiper bracket is relaxed to absorb the impact.

JP-A-11-217061

  By the way, at the time of a vehicle front collision or the like, the detachment limit value when the mounting bolt moves along the slit portion and comes off the wiper bracket is determined by the fastening force (static friction force) between the mounting bolt and the wiper bracket. Therefore, in the above conventional structure, in order to relieve the external force applied to the wiper bracket, accurate torque management of the mounting bolt is necessary, and setting of the mounting strength of the wiper bracket becomes complicated.

  Accordingly, an object of the present invention is to provide a wiper bracket mounting structure that can more easily relieve external force applied to the wiper bracket.

  According to the present invention, the wiper bracket includes at least one of the first vehicle body member provided on the side in the front compartment and the second vehicle body member disposed between the front compartment and the vehicle compartment via the easily deformable legs. It is attached to either.

  According to the present invention, since the wiper bracket is attached to at least one of the first vehicle body member and the second vehicle body member via the easily deformable legs, accurate torque management of the mounting bolt, which is a complicated operation, is performed. Is not required, and the setting of the mounting strength of the wiper bracket becomes easy. At that time, when a load of a predetermined value or more is input to the wiper bracket at the time of a frontal collision of the vehicle, the easily deformable leg portion is deformed and the external force applied to the wiper bracket can be reduced.

It is a perspective view which shows the attachment structure of the wiper bracket concerning the 1st Embodiment of this invention. FIG. 2 is a cross-sectional view of the wiper bracket mounting structure of FIG. 1 as viewed from the left side in the vehicle width direction. It is a perspective view which shows the state which attached the wiper unit to the wiper bracket of FIG. FIG. 2 is a front view of the wiper bracket mounting structure of FIG. 1 viewed from the front side of the vehicle body. FIG. 2 is a plan view of the wiper bracket mounting structure of FIG. 1 as viewed from above the vehicle body including both sides in the vehicle width direction. It is a perspective view which shows the attachment structure of the wiper bracket concerning the 2nd Embodiment of this invention.

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

  In the wiper bracket mounting structure according to the first embodiment, as shown in FIGS. 1 and 2, a partition wall in which a vehicle compartment 1 and a front compartment 3 positioned in front of the vehicle compartment 1 are vertically extended. It is partitioned off by a dash panel 5 serving as a member. As shown in FIG. 2, the upper portion of the dash panel 5 has a front bent portion 5 a that is bent slightly upward in front of the vehicle body, and the front end portion of the front bent portion 5 a is bonded to the back surface of the front window shield panel 7. It is bonded and fixed with an agent. 1 and 2 and other drawings, the direction indicated by the arrow FR is the front of the vehicle body, the direction indicated by the arrow LH is the left side of the vehicle body, and the direction indicated by the arrow UP is the upper side of the vehicle body.

  A dash cross member 9 having a hat-shaped cross section extending in the vehicle width direction is joined and fixed to the front compartment 3 side of the dash panel 5 by upper and lower flanges 9a and 9b. On the front surface 9c of the dash cross member 9 opposite to the dash panel 5, the end portion 11a on the vehicle body rear side of the upper and lower partition plates 11 that partitions the front compartment 3 into upper and lower regions (spaces) 3a and 3b is joined and fixed. Yes. An end portion 11b of the upper and lower partition plates 11 on the front side of the vehicle body is joined and fixed to a vehicle body structural member (not shown) at the front of the vehicle body.

  As shown in FIG. 1, side members 13 extending in the longitudinal direction of the vehicle body are arranged on both sides in the vehicle width direction, and the dash cross member 9 and the upper and lower partition plates 11 described above are disposed between the left and right side members 13. The left and right side members 13 are connected to each other. 1 to 4 illustrate the attachment structure of the wiper bracket on the left side of the vehicle body, the right side of the vehicle body is symmetrical with respect to the left side of the vehicle body in FIG. The following description is given with respect to the wiper bracket on the left side of the vehicle body. In FIG. 2, the side member 13 is omitted.

  The lower part of the strut tower 15 is joined to the outer side of the side member 13 in the vehicle width direction. It is joined to. The position of the strut tower 15 in the longitudinal direction of the vehicle body substantially corresponds to the end portion 11b of the vertical partition plate 11 on the vehicle body front side. Further, a wheel house 19 that houses a front wheel (not shown) is disposed between the side edge of the strut tower 15 on the vehicle body rear side and the dash panel 5. The wheel house 19 has an inner side in the vehicle width direction joined to the upper surface of the side member 13 via a flange 19a, and an outer side in the vehicle width direction joined to the lower inner surface of the front pillar 21.

  Here, in the present embodiment, a wiper bracket 25 for attaching the wiper device 23 shown in FIG. 3 to the vehicle body member is provided, and the wiper bracket 25 has a base portion 27 having a substantially triangular shape as shown in FIG. I have. A trapezoidal pedestal 29 is fixed on the base 27 and a wiper device 23 is attached on the pedestal 29 as shown in FIG. The base portion 27 is inclined so that the front side of the vehicle body and the pedestal 29 are located at a lower position in the vehicle body vertical direction than the rear side of the vehicle body.

  On the other hand, the wiper device 23 shown in FIG. 3 has a base portion 31 fixed on a pedestal 29, and a pivot shaft support portion 31a is formed in a cylindrical shape on the side opposite to the pedestal 29 of the base portion 31. The pivot shaft support portion 31a is provided with a through hole, and the pivot shaft 33 is rotatably inserted into the through hole. The pivot shaft 33 protrudes from the pivot shaft support portion 31a, and a wiper unit 35 is attached to the protruding portion. That is, the pivot shaft 33 and the wiper unit 35 rotate together.

  The wiper unit 35 includes a wiper arm 37 and a wiper blade (not shown) mounted on the distal end side of the wiper arm 37. The pivot shaft 33 is inserted and fixed in a support hole formed in the base end portion 37a of the wiper arm 37. ing. A wiper motor 39 is attached to the vehicle body front side of the base portion 31 of the wiper device 23, and the wiper motor 39 and the pivot shaft 33 in the pivot shaft support portion 31a are connected via a reduction mechanism (not shown). That is, the wiper motor 39 is driven to rotate the wiper unit 35 via the speed reduction mechanism and the pivot shaft 33 to wipe away raindrops and the like on the surface of the front window shield panel 7.

  In the wiper bracket 25 described above, one end 41a of the first connecting member 41 and one end 43a of the second connecting member 43 are respectively attached to the left and right side surfaces of the base portion 27 on the vehicle body front side. . As shown in FIG. 5, the first connecting member 41 located on the left side of the vehicle body (right side in FIG. 1) is located on the outer side in the vehicle width direction and slightly forward of the vehicle body from the attachment portion of one end 41 a to the base portion 27. A main body 41b extending obliquely toward the head is provided.

  The other end 41c bent from the main body 41b toward the outside in the vehicle width direction is joined and fixed to the first mounting piece 45. The first attachment piece 45 has a side wall portion 45a joined to the outer side in the vehicle width direction of the other end portion 41c, and a front and rear wall that bends and extends outward from the end portion of the side wall portion 45a toward the vehicle width direction. Part 45b. The front and rear wall portions 45b are fastened and fixed to the side surface 15a of the strut tower 15 on the vehicle body front side by using bolts 47 as fastening members. In addition, without using the first mounting piece 45, the end 41c of the first connecting member 41 is bent outward in the vehicle width direction, and the bent end 41c is directly attached to the side surface 15a of the strut tower 15. May be.

  The second connecting member 43 located on the vehicle body right side (left side in FIG. 5) of the wiper bracket 25 on the left side in the vehicle width direction (right side in FIG. 5) is attached to the vehicle body from the attachment portion of one end 43a to the base portion 27. A main body 43b extending rearward and obliquely rearward in the vehicle width direction and slightly inward is provided. The other end 43c bent from the main body 43b toward the inside in the vehicle width direction is attached to the second attachment piece 49. The second mounting piece 49 includes a bottom wall portion 49a joined to the upper surface of the dash cross member 9, and a vertical wall portion 49b that bends and extends upward from an end of the bottom wall portion 49a on the vehicle body front side. ing. The other end 43c of the second connecting member 43 is brought into contact with the vehicle body front side of the vertical wall portion 49b and is fastened and fixed using a bolt 51 as a fastening member. Instead of using the second attachment piece 49, the end portion 43c of the second connecting member 43 may be appropriately bent and the bent end portion 43c may be directly attached to the dash cross member 9.

  Further, the base portion 27 of the wiper bracket 25 has a rear end bent portion 27a whose end on the rear side of the vehicle body is bent toward the upper side of the vehicle body, and the rear end bent portion 27a is attached to the third attachment piece 53. . As shown in FIG. 2, the third attachment piece 53 includes a dash panel side joint portion 53 a that is joined to the lower surface of the front bent portion 5 a of the dash panel 5, and a vehicle body front side of the dash panel side joint portion 53 a. And a vertical wall portion 53b that bends and extends downward from the end portion. The rear end bent portion 27a of the base portion 27 is brought into contact with the vertical wall portion 53b from the front side of the vehicle body and is fastened and fixed by a bolt 55 as a fastening member. Instead of using the third attachment piece 53, the rear end bent portion 27 a of the base portion 27 may be appropriately changed in shape, and the rear end bent portion 27 a having the changed shape may be directly attached to the dash panel 5.

  Here, the strut tower 15 constitutes a first vehicle body member provided on the side in the vehicle width direction in the front compartment 3, and a part of the wiper bracket 25 (the first connection member 41) is formed on the first vehicle body member. ) Is attached. On the other hand, the dash panel 5 including the dash cross member 9 constitutes a second vehicle body member disposed between the front compartment 3 and the passenger compartment 1, and the second vehicle body member has a vehicle width direction central portion at the center. A part of the wiper bracket 25 (second connecting member 43) is attached.

  The first connecting member 41, the second connecting member 43, and the rear end bent portion 27a described above constitute a plurality of mounting legs, and among these, the second connecting member 43 receives a load of a predetermined value or more. It constitutes an easily deformable leg that can be deformed when it is pressed. That is, at least one of the plurality of mounting legs is set as an easily deformable leg.

  The second connecting member 43, which is an easily deformable leg, is inclined with respect to the longitudinal direction of the vehicle body so that the end 43c on the rear side of the vehicle body is located on the inner side in the vehicle width direction and the rear side of the vehicle body with respect to the end portion 43a on the front side of the vehicle body . Moreover, the length of this 2nd connection member 43 is set longer than the 1st connection member 41 which is another attachment leg part, and the rear-end bending part 27a. Further, in FIG. 1 and FIG. 3, which is slightly closer to the end 43c of the second connecting member 43, on the back side of the paper surface (the front surface side in FIG. 2), for example, a notch recess 43b1 that becomes a fragile portion intersects the longitudinal direction in FIG. It is formed along the vertical direction. Thereby, the 2nd connection member 43 is partially thinned. Instead of providing the notch recess 43b1, the entire second connecting member 43 may be thinner than other parts such as the first connecting member 41 to form an easily deformable leg.

  On the other hand, the first connecting member 41 and the rear end bent portion 27a, which are other mounting legs, are shorter in length than the second connecting member 43, which is an easily deformable leg, and are not provided with a notch recess. The strength is higher than that of the second connecting member 43 and the mounting rigidity is ensured.

  Next, in the wiper bracket mounting structure according to the present embodiment as described above, the deformation of the wiper bracket 25 at the time of a frontal collision of the vehicle will be described. Here, as shown in FIG. 5, a case where a collision load is applied to the wiper bracket 25 on the left side in the vehicle width direction (right side in FIG. 5) will be described.

  At the time of a frontal collision, the vehicle body receives a collision load F from the front of the vehicle, and this collision load F acts on the wiper bracket 25. When the wiper bracket 25 receives the collision load F, the first connecting member 41, the second connecting member 43, and the rear end bent portion 27a receive a compressive load in the longitudinal direction of the vehicle body. At that time, the second connecting member 43 receives a compressive load between the base portion 27 to which the front end portion 43a is connected and the dash cross member 9 to which the rear end portion 43c is connected.

  Whether the second connecting member 43 that has received a compressive load bends and deforms so that the outer side in the vehicle width direction (right side in FIG. 5) becomes convex as indicated by a two-dot chain line, starting from the notch recess 43b1 that is a fragile portion. Or damaged. The input load that causes the second connecting member 43 to be bent or deformed at the time of a collision can be structurally controlled by the length and thickness of the second connecting member 43 or the depth of the notch recess 43b1.

  On the other hand, since the first connecting member 41 and the rear end bent portion 27a ensure mounting rigidity, deformation is suppressed. For this reason, the wiper bracket 25 moves and displaces toward the second connecting member 43 that is bent or deformed, thereby relaxing the external force applied to the wiper bracket 25 and absorbing the impact. As a result, the movement of the wiper bracket 25 toward the passenger compartment 1 can be suppressed. At this time, as shown in FIG. 5, the second connecting member 43 is laid out substantially along the vehicle body front-rear direction to effectively utilize the length of the second connecting member 43 to absorb the impact.

  At this time, in the present embodiment, regarding the setting of the attachment strength of the wiper bracket 25, the length of the second connecting member 43 is increased, or the notched recess 43b1 is provided to make the second connecting member 43 an easily deformable leg. This eliminates the need for accurate torque management of the mounting bolt, which is a complicated operation, and makes it easy to set the mounting strength of the wiper bracket 25.

  The easily deformable leg portion is not limited to the second connecting member 43 but may be the first connecting member 41 or the rear end bent portion 27a. Even in such a case, the external force applied to the wiper bracket 25 due to the deformation of the first connecting member 41 and the rear end bent portion 27a when a load of a predetermined value or more is input to the wiper bracket 25 during a frontal collision of the vehicle. Can be relaxed. That is, the wiper bracket 25 has a first vehicle body member provided on the side in the front compartment 3 and a second vehicle body member disposed between the front compartment 3 and the vehicle compartment 1 via the easily deformable legs. As long as it is attached to at least one of the above.

  Moreover, the input direction of the collision load input when the deformation occurs can have a certain width. That is, even if the load input at the time of the frontal collision is not in the longitudinal direction of the vehicle body but in a slightly oblique direction with respect to the longitudinal direction of the vehicle body, the easily deformable leg portion can be bent and deformed, and the external force applied to the wiper bracket 25 more reliably. Can be mitigated to prevent entry into the passenger compartment 1.

  In the present embodiment, the wiper bracket 25 has a plurality of mounting legs, and at least one of the plurality of mounting legs is set as an easily deformable leg, and the strut tower 15 is interposed via the plurality of mounting legs. A wiper bracket 25 is attached to the dash panel 5. In that case, the length of the 2nd connection member 43 which is an easily deformable leg part is set longer than the length of the 1st connection member 41 which is another attachment leg part, and the rear-end bending part 27a. Thereby, when a load is input to the wiper bracket 25 due to a vehicle front collision or the like, the second connecting member 43 is more easily deformed than the other first connecting members 41 and the rear end bent portion 27a. As a result, the external force applied to the wiper bracket 25 can be easily reduced with a simpler configuration.

  Moreover, in this embodiment, the 2nd connection member 43 which is an easily deformable leg part is provided with the notch recessed part 43b1 as a weak part. In this case, when the second connecting member 43 receives a collision load, the second connecting member 43 can be more easily deformed because the second connecting member 43 is bent or deformed starting from the notch recess 43b1.

  The first vehicle body member to which the above-described wiper bracket 25 is attached is not limited to the strut tower 15 but may be, for example, a hood ridge 57 that is a vehicle body member constituting the vehicle body side portion as shown in FIG. 6 as the second embodiment. . The hood ridge 57 includes an inner wall surface 57a as a side portion extending in the vertical direction of the vehicle body, and an end portion 41c of the first connecting member 41, which is a part of the wiper bracket 25, is attached to the inner wall surface 57a.

  Thus, even when the end 41c of the first connecting member 41 is attached to the inner wall surface 57a of the hood ridge 57, the external force applied to the wiper bracket 25 by the deformation of the second connecting member 43 at the time of a frontal collision of the vehicle. Can be easily relaxed.

  In FIG. 6 described above, the first connecting member 41 is formed so as to extend to the front side of the vehicle body of the strut tower 15 with respect to FIG. 1, and the end 41c is bent outward in the vehicle width direction and provided on the inner wall surface 57a. It attaches to the 4th attachment piece 61 which is attached. The fourth mounting piece 61 includes a fixing portion 61a that is welded and fixed to the inner wall surface 57a, and a mounting portion 61b that is bent inward in the vehicle width direction from the rear end of the fixing portion 61a.

  Then, the end portion 41c of the first connecting member 41 is overlapped with the attachment portion 61b from the front of the vehicle body, and is fastened and fixed from the front of the vehicle body by the bolts 47. Note that the end 41 c of the first connecting member 41 may be directly attached to the inner wall surface 57 a of the hood ridge 57 without providing the fourth attachment piece 61. Further, in FIG. 6, the same components as those in FIG. 1 are denoted by the same reference numerals, and the first connecting member 41 and the second connecting member 43 are connected to the base portion 27 in the same manner as the rear end bent portion 27a. An integrated example is shown. By integrating the first connecting member 41 and the second connecting member 43 with the base portion 27 by, for example, press molding or the like, the component cost can be suppressed.

  In the present embodiment, the second vehicle body member to which the wiper bracket 25 is attached is the dash panel 5. The dash panel 5 is a partition plate that separates the vehicle compartment 1 and the front compartment 3 in the longitudinal direction of the vehicle body. The wiper bracket 25 is disposed on the front side of the vehicle body of the dash panel 5, the second connecting member 43 and the rear end bent portion 27 a are disposed. Install through. Accordingly, when a load is input to the wiper bracket 25 due to a vehicle front collision or the like, the second connecting member 43 that is the easily deformable leg portion is easily deformed by receiving a compressive load with the dash panel 5 efficiently. .

  In the vehicle body structure in this embodiment, a hood 59 that covers the upper opening of the front compartment 3 is provided in front of the front window shield panel 7 as shown in FIG. Then, air outside the vehicle is taken into a region 3a between the hood 59 and the upper and lower partition plates 11 from a slit serving as a through hole formed in the hood 59, and the taken-out outside air is formed in the dash panel 5 (not shown). The air is supplied to the air conditioning unit in the passenger compartment 1 through the air introduction hole.

  Therefore, the vehicle body structure in the present embodiment is not provided with a cowl box that is formed on the upper portion of the dash panel 5 and takes in air outside the vehicle into the vehicle body, and the area corresponding to the space inside the cowl box is the front compartment 3. The region 3a is also used. In this case, there is no cowl panel constituting the upper surface of the cowl box, but the present invention can be applied even to a vehicle in which such a cowl panel (cowl box) is not set. Conversely, the present invention can also be applied to a vehicle in which a cowl panel (cowl box) is set.

  The cowl box described above is located in front of the lower part of the front window shield panel 7. For this reason, if the vehicle body structure has no cowl box, the wiper bracket 25 can be brought closer to the front window shield panel 7 and the attachment structure of the wiper bracket can be further simplified. In the case where the wiper bracket 25 is configured to approach the front window shield panel 7, the effect of reducing the external force applied to the wiper bracket 25 and suppressing the movement of the wiper bracket 25 to the vehicle compartment 1 side at the time of a frontal collision, It becomes even more effective.

1 Car compartment 3 Front compartment 5 Dash panel (second body member, body member)
9 Dash cross member (second body member, body member)
15 Strut tower (first body member, body member)
23 Wiper device 25 Wiper bracket 27a Rear end bent portion (mounting leg) of wiper bracket
39 Wiper motor 41 First connecting member (mounting leg) of wiper bracket
43 Second connecting member of wiper bracket (easily deformable leg, mounting leg)
43b1 Notch recess (fragile part) of the second connecting member
57 Hood Ridge (first body member, body member)

Claims (5)

A wiper bracket mounting structure for mounting a wiper bracket supported by a wiper motor of a wiper device to a vehicle body member,
The wiper bracket has easily deformable legs that can be deformed when a load of a predetermined value or more is input,
The wiper bracket is at least one of a first vehicle body member provided on a side in the front compartment and a second vehicle body member disposed between the front compartment and the vehicle compartment via the easily deformable leg portion. Wiper bracket mounting structure characterized by being attached to The wiper bracket has a plurality of mounting legs, and at least one of the plurality of mounting legs is set as the easily deformable leg, and the first vehicle body member and the second body leg are arranged via the plurality of mounting legs. A wiper bracket is attached to the body member,
The wiper bracket mounting structure according to claim 1, wherein the length of the easily deformable leg is set to be longer than the length of the other mounting leg.   The wiper bracket mounting structure according to claim 1 or 2, wherein the easily deformable leg portion includes a fragile portion.   The wiper bracket mounting structure according to any one of claims 1 to 3, wherein the first vehicle body member is a strut tower or a hood ridge.   The wiper bracket mounting structure according to any one of claims 1 to 4, wherein the second vehicle body member is a dash panel.

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