JP7135519B2 - wheel house structure - Google Patents

Description

The present invention relates to a wheelhouse structure.

Conventionally, a vehicle rear structure has been proposed in which a wheel house is formed by a wheel house inner and a wheel house outer, and a roof side inner gusset (reinforcing member) is provided to join the roof side inner panel and the wheel house inner. (See Patent Document 1, for example). In the vehicle rear portion structure described in Patent Literature 1, a suspension (shock absorber) is attached to a wheel house inner via a bracket.

JP 2016-112991 A

In the vehicle rear portion structure disclosed in Patent Document 1, when a vertical load is applied to the suspension, this load is transmitted to the roof side inner panel via the roof side inner gusset. However, depending on the magnitude of the load applied to the suspension, the roof side inner gusset may deform, making it difficult to transmit the load.

SUMMARY OF THE INVENTION An object of the present invention is to provide a wheelhouse structure that can facilitate transmission of a load input to a shock absorber to an upper frame member.

The wheelhouse structure of the present invention includes an inner panel that bulges inward in the vehicle width direction, an outer panel that bulges outward in the vehicle width direction, a reinforcing member provided over the inner panel and a frame member above it, and a bracket for supporting a shock absorber, the bracket being arranged outside in the vehicle width direction with respect to the inner panel and being attached to the inner panel outside and above the shock absorber supporting position. a joined first joint portion; and a second joint portion joined to the inner panel inside the shock absorber supporting position, forming a closed cross-section with the inner panel; At one joint portion, the reinforcing member is also joined together , and plate portions extending in the vertical direction of the inner panel, the reinforcing member, and the bracket are overlapped with each other, and the overlapping portion is the first joint portion. is formed .

According to the wheel house structure of the present invention, it is possible to easily transmit the load input to the shock absorber to the upper frame member.

1 is a perspective view showing a wheelhouse structure according to an embodiment of the present invention; FIG. It is a sectional view showing the important section of the wheel house structure. FIG. 4 is a cross-sectional view showing how a bracket supports a shock absorber in the wheel house structure; FIG. 3 is an end view showing a cut surface in FIG. 2; It is a perspective view which expands and shows the joint part of the reinforcement member and frame|skeleton member in the said wheel house structure. It is a perspective view which expands and shows the joint part of the inner panel and reinforcement member in the said wheel house structure.

The invention described in claim 1 includes an inner panel that bulges inward in the vehicle width direction, an outer panel that bulges outward in the vehicle width direction, and a reinforcing member that is provided across the inner panel and a frame member above it. , and a bracket for supporting the shock absorber, wherein the bracket is arranged outside in the vehicle width direction with respect to the inner panel and joined to the inner panel outside and above the shock absorber supporting position. and a second joint portion joined to the inner panel inside the shock absorber supporting position, forming a closed cross section between the inner panel and the first joint portion, and reinforcing the A wheel characterized in that the members are also joined together , the inner panel, the reinforcing member and the bracket are overlapped with plate portions extending along the vertical direction, and a first joint portion is formed in the overlapped portion. House structure.

According to this aspect of the invention, the bracket is joined not only to the inner panel but also to the reinforcing member at the first joint located above the shock absorber support position. Directional loads can be transmitted directly to the reinforcing member. Furthermore, since the reinforcing member is provided over the inner panel and the upper frame member, the vertical load input to the shock absorber can be easily transmitted to the upper frame member via the reinforcing member. can be done.

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2, the wheel house structure 1 of this embodiment is a part of a vehicle rear part structure 10, and includes an inner panel (wheel house inner panel) 2, an outer panel (wheel house outer panel) 3, A rear pillar inner reinforcement (reinforcing member) 4 and a bracket 5 are provided. In this embodiment, the longitudinal direction of the vehicle is the X direction, the width direction of the vehicle is the Y direction, and the vertical direction is the Z direction. In addition, in the Y direction, the center side of the vehicle is defined as "inner side" and the outer side of the vehicle is defined as "outer side."

1 shows the structure on the left side of the vehicle rear portion structure 10, the structure on the right side is also symmetrical, and only the structure on the left side will be described below.

The inner panel 2 has an inner bulging portion 21 that bulges inward in the Y direction. A quarter inner panel 11 is joined to the upper end of the inner panel 2 . A striker bracket 12 is joined so as to straddle the inner panel 2 and the quarter inner panel 11 . The striker bracket 12 supports a rear back striker that restricts reclining and rearward movement of the rear seat back. A floor panel 13 is joined to the lower end of the inner panel 2 .

The outer panel 3 has an outer bulging portion 31 that bulges outward in the Y direction. A wheel house WH is formed between the upper end of the inner bulging portion 21 and the upper end of the outer bulging portion 31 by joining them.

The rear pillar inner reinforcement 4 has a strip-shaped body plate portion 41 that extends along the ZX plane and has the Z direction as its longitudinal direction. It is joined to the roof rail 14 . That is, the rear pillar inner reinforcement 4 is provided across the inner panel 2 and the roof rail 14 thereabove. Also, an opening is formed in a substantially central portion of the main body plate portion 41 . A front end of the rear pillar inner reinforcement 4 is joined to the quarter inner panel 11 . The body plate portion 41 is provided with, for example, a power back door controller.

The bracket 5 has a support portion 51 that supports the shock absorber 15 and is arranged outside the inner panel 2 in the Y direction. The shock absorber 15 extends along the Z direction. The support portion 51 has, as shown in FIG. 3 , two fixing portions 511 to which the shock absorber 15 is fixed by bolts, and a through hole 512 through which the pin 151 of the shock absorber 15 is inserted. A through-hole 512 is arranged between two fixed portions 511, and these are arranged along the X direction.

Details of the joint structure and positional relationship of each part in the wheel house structure 1 will be described below.

[Joint structure between inner panel and bracket]
As shown in FIG. 4 , the inner panel 2 includes a first plate portion 22 extending along the ZX plane and a second plate portion 23 extending upward in the Y direction from the upper end of the first plate portion 22 . and a third plate portion 24 extending upward from the upper end of the second plate portion 23, and a fourth plate portion 25 extending upward in the Y direction from the upper end of the third plate portion 24. have. The upper end of the fourth plate portion 25 is formed into a flange shape and joined to the outer panel 3 .

The bracket 5 includes a support plate portion 52 formed with a support portion 51 and extending along the XY plane, an upper plate portion 53 extending upward from the Y-direction outer end of the support plate portion 52, and the support plate portion 52. and a lower plate portion 54 extending downward from the inner end in the Y direction.

The lower plate portion 54 of the bracket 5 is superimposed on the Y-direction outer side of the first plate portion 22 of the inner panel 2 . A shock absorber reinforcement 16, which is a reinforcing member, is superimposed from the upper end of the first plate portion 22 to the second plate portion 23 on the inner side of the inner panel 2 in the Y direction. The support plate portion 52 of the bracket 5 is arranged below the second plate portion 23 of the inner panel 2 with a space therebetween, and the shock absorber patch 17, which is a reinforcing plate material, is superimposed on the upper surface thereof. The upper plate portion 53 of the bracket 5 is superimposed on the third plate portion 24 of the inner panel 2 on the outside in the Y direction, and the main body plate portion 41 of the rear pillar inner reinforcement 4 is superimposed on the inside in the Y direction.

A portion where the main body plate portion 41, the third plate portion 24, and the upper plate portion 53 overlap is joined by spot welding to form a first joint portion SP1. The first joint SP1 is located outside in the Y direction and above in the Z direction the support portion 51 serving as the shock absorber support position. The overlapping portion of the shock absorber reinforcement 16, the first plate portion 22, and the lower plate portion 54 is spot-welded to form a second joint portion SP2. The second joint portion SP2 is positioned inside in the Y direction and below the support portion 51, which is the shock absorber support position, in the Z direction.

The separation between the second plate portion 23 and the support plate portion 52 and the separation between the first plate portion 22 and the upper plate portion 53 form a closed cross section between the bracket 5 and the inner panel 2. be done. The main body plate portion 41 of the rear pillar inner reinforcement 4 extends upward from the first joint portion SP1, and its upper end is joined to the roof rail 14 .

[Joint structure between rear pillar inner force 4 and roof rail 14]
The upper end of the rear pillar inner reinforcement 4 is joined to the roof rail 14, but has the same shape on the front side and the rear side in the X direction, and the shape on the front side will be mainly described below.

As shown in FIG. 5, the rear pillar inner reinforcement 4 has, at its upper end, a wide plate portion 42 that is continuous with the main body plate portion 41 and is wider than the main body plate portion 41 (larger in the X direction); An outer extension plate portion 43 extending outward in the Y direction continuously from the lower end of the wide plate portion 42, and a flange-like plate portion 44 extending downward from the outer end portion of the outer extension plate portion 43. have. The upper end of the rear pillar inner force 4 is inclined downward in the X direction.

The wide plate portion 42 and the flange-like plate portion 44 extend so as to be substantially perpendicular to the Y direction (along the ZX plane) and serve as sideways plate portions. The outer extension plate portion 43 has a slight inclination with respect to the XY plane and extends so as to intersect the Z direction, forming a vertical plate portion. A wide plate portion 42 as a lateral plate portion and a flange-like plate portion 44 are separated from each other in the Y direction, and an outer extension plate portion 43 is arranged between them. Thereby, the rear pillar inner reinforcement 4 has a stepped shape.

The roof rail 14 has a portion overlaid on the Y-direction outside of the wide plate portion 42, a portion overlaid on the upper side of the outer extension plate portion 43, and a portion overlaid on the Y-direction outside of the flange-shaped plate portion 44. It has a stepped shape like the rear pillar inner reinforcement 4 . The rear pillar inner reinforcement 4 and the roof rail 14 are joined by spot welding at the overlapping portions as described above.

[Positional relationship between inner panel and floor panel]
The inner bulging portion 21 of the inner panel 2 is formed with a bead portion 211 extending from the second joint portion SP2 toward the floor panel 13 below. The bead portion 211 is a portion formed so as to protrude further inward in the Y direction in the inner bulging portion 21 .

The floor panel 13 has a portion extending further downward from the joint with the inner panel 2, and is formed in a concave shape when viewed from above. A cross member 132 is provided on the upper surface of the bottom plate 131 of the concave portion of the floor panel 13 . Cross member 132 extends along the Y direction.

When viewed from the Y direction, the X-direction position of the lower end of the bead portion 211 substantially coincides with the X-direction position of the cross member 132 . That is, the positional relationship is such that the downward extension line of the bead portion 211 and the Y-direction outer extension line of the cross member 132 intersect.

[Joint structure between inner panel and striker bracket]
The striker bracket 12 has a flange portion 121 along the inner bulging portion 21 of the inner panel 2, as shown in FIG. The shock absorber reinforcement 16 is overlaid on the inside of the inner bulging portion 21 in the Y direction, and the flange portion 121 is overlaid thereon. The overlapping portions of the three sheets are joined by spot welding.

Since the shock absorber reinforcement 16 is joined to the striker bracket 12 in this way, the load applied to the shock absorber reinforcement 16 is transmitted to the striker bracket 12 . The striker bracket 12 extends along the Z direction and has its upper end joined to the quarter inner panel 11 . Therefore, the load input to the shock absorber 15 and transmitted to the shock absorber reinforcement 16 is transmitted to the quarter inner panel 11 by the striker bracket 12 .

According to this embodiment, the following effects are obtained. That is, the bracket 5 is joined not only to the inner panel 2 but also to the rear pillar inner reinforcement 4 at the first joint portion SP1 located above the support portion 51 that supports the shock absorber 15. A Z-direction load input to the shock absorber 15 can be directly transmitted to the rear pillar inner force 4 . Furthermore, since the rear pillar inner reinforcement 4 is provided across the inner panel 2 and the upper roof rail 14, the load in the Z direction input to the shock absorber 15 is transferred to the upper rear pillar inner reinforcement 4 via the rear pillar inner reinforcement 4. It is possible to facilitate transmission to the roof rail 14 .

In addition, the first joint portion SP1 is formed in the overlapping portion of the third plate portion 24, the upper plate portion 53, and the main body plate portion 41, and all of these plate portions extend along the Z direction, thereby providing a shock absorber. The periphery of the first joint SP1 is less likely to be deformed by the load in the Z direction input to 15, and the load is easily transmitted to the roof rail 14. - 特許庁

In addition, since the rear pillar inner force 4 extends upward from the first joint SP1 and is joined to the roof rail 14, the load input to the shock absorber 15 can be easily transmitted to the roof rail 14 above.

At the upper end portion of the rear pillar inner reinforcement 4 joined to the roof rail 14, a wide plate portion 42 and a flange-like plate portion 44 extending so as to intersect the Y direction, and an outer side extending so as to intersect the Z direction. The extension plate portion 43 is provided, and the rear pillar inner reinforcement 4 has a stepped shape, so that the joint portion between the rear pillar inner reinforcement 4 and the roof rail 14 has improved strength against loads in different directions. , the strength against torsional deformation can be improved.

In addition, since the inner panel 2 has the bead portion 211 extending from the second joint portion SP2 toward the floor panel 13 below, the load in the Z direction input to the shock absorber 15 is applied to the floor panel 13 by the bead portion 211. can be transmitted.

It should be noted that the present invention is not limited to the above-described embodiments, but includes other configurations and the like that can achieve the object of the present invention, and the following modifications and the like are also included in the present invention.

For example, in the above embodiment, the third plate portion 24, the upper plate portion 53, and the main body plate portion 41 on which the first joint portion SP1 is formed are assumed to extend along the Z direction. The plate portion on which the portion is formed may have a slight inclination (for example, an inclination of 45° or less) with respect to the Z direction, or may extend along the XY plane.

In the above embodiment, the rear pillar inner reinforcement 4 extends upward from the first joint SP1 and is joined to the roof rail 14, but the rear pillar inner reinforcement extends obliquely with respect to the vertical direction. It may be joined to the roof rail 14 with a bent portion extending in another direction.

In the above-described embodiment, the rear pillar inner reinforcement 4 has the wide plate portion 42, the flange-like plate portion 44, and the outer extension plate portion 43, thereby forming a stepped shape. Any suitable structure may be used as long as the joint structure with the skeleton member is suitable. For example, if sufficient strength can be ensured by using another reinforcing member, the reinforcing member may not have a stepped shape.

Further, in the above-described embodiment, the position of the bead portion 211 in the X direction and the position of the cross member 132 of the floor panel 13 in the X direction are assumed to substantially match. It may be set as appropriate. For example, when a plurality of cross members are provided, the X-direction position of the bead portion may be set between the X-direction positions of two cross members.

Also, the bead portion may not be formed on the inner panel. For example, if a strip-shaped reinforcing member extending along the Z direction is provided on the inner panel, the load input to the shock absorber 15 can be transmitted to the floor panel 13 by the strip-shaped reinforcing member.

In addition, although the best configuration, method, etc. for carrying out the present invention have been disclosed in the above description, the present invention is not limited thereto. That is, although the present invention has been particularly illustrated and described primarily with respect to particular embodiments, modifications may be made to such embodiments without departing from the spirit and scope of the invention. , materials, quantity, and other detailed configurations can be modified in various ways by those skilled in the art. Therefore, the descriptions that limit the shape, material, etc. disclosed above are exemplified to facilitate understanding of the present invention, and do not limit the present invention. The description by the name of the member that removes all or part of the limitation such as is included in the present invention.

1 Wheel house structure 2 Inner panel 211 Bead part 3 Outer panel 4 Rear pillar inner reinforcement (reinforcing member)
42 wide plate (horizontal plate)
43 Outer extension plate (vertical plate)
44 flange-like plate (horizontal plate)
5 bracket 13 floor panel 132 cross member 14 roof rail (framework member)
15 Shock absorber SP1 First joint SP2 Second joint

Claims (5)

an inner panel that bulges inward in the vehicle width direction, an outer panel that bulges outward in the vehicle width direction, a reinforcing member provided over the inner panel and a frame member above it, and a bracket that supports a shock absorber; A wheel house structure comprising
The bracket is arranged outside in the vehicle width direction with respect to the inner panel, and includes a first joint portion joined to the inner panel outside and above the shock absorber supporting position, and a first joint portion joined to the inner panel inside the shock absorber supporting position. a second joint portion joined to the inner panel and forming a closed cross section with the inner panel;
The reinforcing member is also joined together at the first joint ,
A wheel house structure , wherein the plate portions of the inner panel, the reinforcing member, and the bracket, which extend along the vertical direction, are overlapped with each other, and the first joint portion is formed in the overlapping portion . 2. The wheelhouse structure according to claim 1 , wherein the reinforcing member extends upward from the first joint portion and is joined to the frame member. The reinforcing member has a lateral plate portion extending to intersect the vehicle width direction and a vertical plate portion extending to intersect the vertical direction at a portion joined to the frame member. The wheel house structure according to claim 1 or 2 . The reinforcing member has a stepped shape composed of a plurality of laterally directed plate portions separated from each other in the vehicle width direction and the vertically directed plate portions disposed between the plurality of laterally directed plate portions. The wheel house structure according to claim 3 . The wheelhouse structure according to any one of claims 1 to 4 , wherein the inner panel is formed with a bead portion extending from the second joint portion toward the floor panel below.

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