Vehicle slide door structure

Abstract

To effectively suppress a displacement of an area including a lower front corner part of a window periphery part of a door body.SOLUTION: A slide door 100 having a vehicle slide door structure includes: a door body 1 which is provided on a vehicle body side part and has an inner panel 2 and an outer panel 3; and a corner reinforcement 8 which is joined from the inside of the door body 1 to a lower part 2a21 of a front edge part 2a2 of a window periphery part 2a surrounding a window hole 1b opened in an upper part of the inner panel 2 of the door body 1, and to a front part 2a11 of a lower edge part 2a1 of the window periphery part 2a.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present invention relates to a vehicle sliding door structure including a sliding door body. [Background technology]

[0002] In general, the door body of a sliding door opens and closes the boarding / alighting opening on the side of the vehicle body by sliding in the front-rear direction of the vehicle along a rail provided on the side of the vehicle body. As an example of a vehicle sliding door structure including such a door body, the sliding door structure disclosed in Patent Document 1 is known. In the conventional sliding door structure as disclosed in Patent Document 1, an upper rail is provided at the upper edge of the boarding / alighting opening on the side of the vehicle body, a lower rail is provided at the lower edge of the boarding / alighting opening on the side of the vehicle body, and a front portion of the upper part of the door body is connected to the side of the vehicle body via an upper connecting part so as to be slidable in the front-rear direction of the vehicle along the upper rail, and a front portion of the lower part of the door body is connected to the side of the vehicle body via a lower connecting part so as to be slidable in the front-rear direction of the vehicle along the lower rail. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-39539 A Summary of the Invention [Problem to be solved by the invention]

[0004] Generally, the front part of the door body of a sliding door is connected to the vehicle body side part via the upper connecting part and the lower connecting part as described above. Therefore, when the sliding door is closed, the displacement of the upper front part and the lower front part of the door body in the vehicle width direction caused by the impact force due to the door closing is restricted by the upper connecting part and the lower connecting part. As a result, the displacement such as the swing caused by the door closing is suppressed in each of the upper front part and the lower front part of the door body.

[0005] However, the door body has a large window opening. Therefore, in the intermediate portion between the upper connecting portion and the lower connecting portion of the front portion of the door body, particularly in the region including the front lower corner of the window periphery surrounding the window opening of the door body, the displacement in the vehicle width direction caused by closing the door is not restricted in relation to the vehicle body side. Therefore, a structure that suppresses the displacement in the vehicle width direction caused by closing the door is desired for the region including the front lower corner of the window periphery of the door body.

[0006] Therefore, an object of the present invention is to provide a vehicle sliding door structure that can effectively suppress displacement in the vehicle width direction that may occur in an area including the front lower corner of the window peripheral portion of the door body when the door is closed. [Means for solving the problem]

[0007] In order to achieve the above object, according to one aspect of the present invention, there is provided a vehicle sliding door structure including: a door body provided on a vehicle body side portion, the door body having an inner panel and an outer panel arranged on the vehicle width outside of the inner panel; an upper connecting portion connecting an upper front portion of the door body to an upper rail provided on the vehicle body side portion so as to be slidable in the fore-and-aft direction of the vehicle along the upper rail; and a lower connecting portion connecting a lower front portion of the door body to the lower rail provided on the vehicle body side portion so as to be slidable in the fore-and-aft direction of the vehicle along the lower rail provided on the vehicle body side portion, the upper portion of the door body having a window hole, and a corner reinforcement joined from the inside of the door body to a lower portion of a front edge of a window peripheral portion surrounding the window hole in the inner panel and a front portion of a lower edge of the window peripheral portion. Effect of the Invention

[0008] According to the vehicle sliding door structure of one aspect of the present invention, it is possible to provide a vehicle sliding door structure that can effectively suppress displacement in the vehicle width direction that may occur in an area including the front lower corner of the window peripheral portion of the door body when the door is closed. [Brief description of the drawings]

[0009] [Figure 1] 1 is a perspective view of a sliding door to which a vehicle sliding door structure according to an embodiment of the present invention is applied, as viewed from the inside in a vehicle width direction. [Diagram 2] FIG. [Diagram 3] 3 is a partial perspective view of a cut model taken along line AA shown in FIG. 2. [Figure 4] 3 is a cross-sectional view taken along line AA shown in FIG. 2. [Diagram 5] 3 is a partial perspective view of a cut model taken along line BB shown in FIG. 2. [Figure 6] 3 is a cross-sectional view taken along line BB shown in FIG. 2. [Figure 7] FIG. 2 is a partial perspective view for explaining the internal structure of the sliding door. [Figure 8] FIG. 2 is an enlarged plan view of a portion including a corner reinforcement of the sliding door. [Figure 9] FIG. 2 is a perspective view of a corner reinforcement of a sliding door. [Figure 10] FIG. 2 is an enlarged perspective view of a portion including a corner reinforcement of the sliding door. [Figure 11] 3 is a partial perspective view of a cut model taken along line CC shown in FIG. 2. [Figure 12] 3 is a cross-sectional view taken along line CC shown in FIG. 2. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. Fig. 1 is an overall perspective view of a sliding door 100 to which a vehicle sliding door structure according to one embodiment of the present invention is applied, as viewed from the inside in the vehicle width direction, and Fig. 2 is a partial perspective view of the sliding door 100. In the drawings, the arrow Fr direction indicates the front of the vehicle in the vehicle longitudinal direction, the arrow O direction indicates the outside of the vehicle in the vehicle width direction (vehicle width direction), and the arrow U direction indicates the upper side of the vehicle in the vehicle vertical direction. In the following description, "front" and "rear" correspond to the front and rear in the vehicle longitudinal direction, and "upper" and "lower" correspond to the upper and lower in the vehicle vertical direction.

[0011] (Overview of sliding doors) 1 and 2, the sliding door 100 includes a door body 1, a door latch 1a, an upper connecting portion 4, a lower connecting portion 5, an impact beam 6, and a door outer center reinforcement 7. The sliding door 100 is a sliding door that is connected to a vehicle body side portion (not shown) so as to be slidable in the vehicle front-rear direction and opens and closes an entrance / exit opening in the vehicle body side portion. In this embodiment, the sliding door 100 is a rear sliding door. In the following, an example will be described in which the sliding door 100 is applied to a right rear sliding door when an occupant in the vehicle cabin looks forward in the vehicle front-rear direction.

[0012] The door body 1 is provided on the side of the vehicle body and has an inner panel 2 and an outer panel 3 arranged on the outer side of the inner panel 2 in the vehicle width direction. Each panel (2, 3) is formed by pressing a thin metal steel plate. The door body 1 (in other words, the inner panel 2 and the outer panel 3) has a generally rectangular outer shape in a plan view seen from the vehicle width direction. A window hole 1b that is opened and closed by a window glass G is opened in an upper part of the door body 1 (generally the center of the upper half area in the illustrated example). Although not shown in the figure, a resin trim is attached to the inner side of the door body 1 in the vehicle width direction (i.e., the inner panel 2).

[0013] The door latch 1a is a part that keeps the door body 1 in a closed state by engaging with a striker provided at the rear edge of the entrance / exit on the side of the vehicle body (not shown), and is fixed to the rear of the inner panel 2 inside the door body 1. A door handle (not shown) is provided on the outer panel 3 of the door body 1, and when the door handle is operated, the door closed state set by the door latch 1a is released.

[0014] The inner panel 2 is a member that constitutes a panel on the inside in the vehicle width direction of the door body 1, and has an outer edge portion that is connected to an outer edge portion of the outer panel 3. The structure of the inner panel 2 will be described in detail later.

[0015] The outer panel 3 faces the outer surface of the inner panel 2 in the vehicle width direction, and is a member that constitutes the outermost wall (design surface) in the vehicle width direction of the sliding door 100. The outer edge of the outer panel 3 is hemmed to be integrated with the inner panel 2, and forms a closed cross-sectional structure in cooperation with the inner panel 2. In other words, the door body 1 is formed by connecting the outer edge of the inner panel 2 and the outer edge of the outer panel 3 to each other.

[0016] The upper connecting part 4 connects the upper front part of the door body 1 to the upper rail L1 provided on the side of the vehicle body so as to be slidable in the vehicle front-rear direction along the upper rail L1. The upper rail L1 extends in the vehicle front-rear direction at the upper edge of the periphery of the entrance / exit on the side of the vehicle body. The upper connecting part 4 has an upper arm 41 attached to the upper front part of the sliding door 100, and an upper roller 42 that engages with the upper rail L1 and can roll (slide) along the inner wall of the upper rail L1. A base end of the upper arm 41 is attached to an upper front part of the door body 1 (in the illustrated example, a front part of the upper surface of an upper wall 21 of the door body 1 described later), and the upper arm 41 extends from the base end generally inward in the vehicle width direction. The upper roller 42 is rotatably supported by the upper arm 41 and rolls along the inner wall of the upper rail L1.

[0017] The lower connecting part 5 connects the lower front part of the door body 1 to the lower rail L2 provided on the side of the vehicle body so as to be slidable in the vehicle front-rear direction along the lower rail L2. The lower rail L2 extends in the vehicle front-rear direction at a lower part of the periphery of the boarding / alighting opening on the side of the vehicle body. The lower connecting part 5 has a lower arm 51 attached to the lower front part of the sliding door 100, and a lower roller 52 that engages with the lower rail L2 and can roll (slide) along the inner wall of the lower rail L2. A base end of the lower arm 51 is attached to a lower front part of the door body 1 (in the illustrated example, around a front lower corner part of a panel inner wall 25 of the inner panel 2 described later), and the lower arm 51 extends from the base end generally inward in the vehicle width direction. The lower roller 52 is rotatably supported by the lower arm 51 and rolls along the inner wall of the lower rail L2.

[0018] The impact beam 6 extends in the front-rear direction of the vehicle within the door body 1. The impact beam 6 is a linearly extending member for suppressing deformation of the sliding door 100 during a side collision, and is formed, for example, in a cylindrical shape. The impact beam 6 extends over substantially the entire front-rear direction of the vehicle in a lower region inside the door body 1. The rear end of the impact beam 6 is fixed to the rear back surface of the rear part of the inner panel 2 via a bracket or the like, and the front end of the impact beam 6 is fixed to the front back surface of the inner panel 2 via a bracket or the like.

[0019] The door outer center reinforcement 7 extends in the vehicle front-rear direction above the impact beam 6 in the door body 1. The door outer center reinforcement 7 is a linearly extending member for preventing dents (deformations) in the outer panel 3 constituting the design surface of the sliding door 100, and is formed, for example, by press forming a thin metal steel plate. The door outer center reinforcement 7 extends over almost the entire vehicle front-rear direction in the lower region inside the door body 1, and is fixed at least to the inner side surface in the vehicle width direction of the outer panel 3. Specifically, the door outer center reinforcement 7 is joined to the inner side surface in the vehicle width direction of the outer panel 3 at multiple points in its longitudinal direction by an adhesive or the like via a hard sponge-like member (not shown). In addition, the front end of the door outer center reinforcement 7 is joined to the back surface of the front part of the inner panel 2 by spot welding, and the rear end of the door outer center reinforcement 7 is joined to the back surface of the rear part of the inner panel 2 by spot welding.

[0020] Next, the structure of the inner panel 2 and the surrounding structure of the window hole 1b will be mainly described with reference to Fig. 1 to Fig. 6. Fig. 3 is a partial perspective view of a cut model taken along line AA shown in Fig. 2, Fig. 4 is a cross-sectional view taken along line AA shown in Fig. 2, Fig. 5 is a partial perspective view of a cut model taken along line BB shown in Fig. 2, and Fig. 6 is a cross-sectional view taken along line BB shown in Fig. 2.

[0021] 1 and 2, the inner panel 2 has a flange-shaped panel peripheral portion 2A joined to the outer panel 3, and a panel main body 2B that bulges generally inward in the vehicle width direction inside the panel peripheral portion 2A. The panel peripheral portion 2A is a portion that is joined to the outer edge portion of the outer panel 3 that has been hemmed, and faces generally inward in the vehicle width direction. The panel main body 2B has an upper wall 21 that extends in the front-rear direction continuous with the upper edge portion of the panel peripheral portion 2A, a lower wall 22 that extends in the front-rear direction continuous with the lower edge portion of the panel peripheral portion 2A, a front wall 23 that extends from the front end of the upper wall 21 to the front end of the lower wall 22, a rear wall 24 that extends from the rear end of the upper wall 21 to the rear end of the lower wall 22, and a panel inner side wall 25 that is surrounded by these walls (21, 22, 23, 24) and occupies most of the area of ​​the inner panel 2.

[0022] The panel inner wall 25 has an annular abutment wall 1c against which a door weatherstrip S1 attached to a vehicle body side abuts from the inside in the vehicle width direction. The annular abutment wall 1c extends annularly along the outer edge of the panel inner wall 25 and faces the inside in the vehicle width direction. The annular abutment wall 1c has a flat annular surface facing the inside in the vehicle width direction (inside the vehicle compartment). An elastic annular door weatherstrip S1 (sealing member) abuts against the annular surface of the annular abutment wall 1c from the inside in the vehicle width direction.

[0023] The window hole 1b penetrates the inner panel 2 and the outer panel 3. The window hole 1b is opened inside the annular abutment wall 1c in approximately the upper half region of the panel inner wall 25. The window hole 1b is opened as a generally rectangular hole. A window peripheral portion 2a surrounding the window hole 1b in the inner panel 2 is formed so as to bulge outward in the vehicle width direction relative to most of the panel inner wall 25.

[0024] 3 to 5, an inner weather strip S2 is attached to a lower edge 2a1 extending in the front-rear direction of a window peripheral portion 2a surrounding the window hole 1b of the inner panel 2. The inner weather strip S2 is an elastic seal member that extends along the lower edge 2a1 of the window peripheral portion 2a of the inner panel 2 and covers the upper part of the lower edge 2a1. Similarly, an outer weather strip S3 is attached to a lower edge 3a1 extending in the front-rear direction of a window peripheral portion 3a surrounding the window hole 1b of the outer panel 3. The outer weather strip S3 is an elastic seal member that extends along the lower edge 3a1 of the window peripheral portion 3a of the outer panel 3 and covers the upper part of the lower edge 3a1. The inner weather strip S2 and the outer weather strip S3 each have a lip portion (S2a, S3a) that comes into contact with the window glass G. The inner weatherstrip S2 has a first inner insertion groove S2b into which the lower edge 2a1 of the window peripheral portion 2a of the inner panel 2 is inserted, and the outer weatherstrip S3 has a first outer insertion groove S3b into which the lower edge 3a1 of the window peripheral portion 3a of the outer panel 3 is inserted.

[0025] 5 and 6, the glass front edge G1 extending in the vertical direction of the window glass G is guided by a resin glass run S4 so as to be slidable in the vertical direction. The glass run S4 has a generally M-shaped cross section and extends in the vertical direction. The glass run S4 is formed with a second inner insertion groove S4a into which the front edge 2a2 extending in the vertical direction of the window peripheral portion 2a of the inner panel 2 is inserted, a second outer insertion groove S4b into which the front edge 3a2 extending in the vertical direction of the window peripheral portion 3a of the outer panel 3 is inserted, a glass insertion groove S4c into which the glass front edge G1 is inserted, and a lip portion S4d that comes into contact with the window glass G.

[0026] 3 and 5, the lower end of the glass run S4 is located below the lower edge 2a1 of the window peripheral portion 2a of the inner panel 2 and the lower edge 3a1 of the window peripheral portion 3a of the outer panel 3, and enters the inside of the door body 1. A notch S4e is formed in the lower part of the inner part in the vehicle width direction of the glass run S4, and a similar notch is formed in the lower part of the outer part in the vehicle width direction of the glass run S4. This allows the lower end of the glass run S4 to enter the inside of the door body 1 in a state in which the front edge 2a2 of the window peripheral portion 2a of the inner panel 2 is inserted into the second inner insertion groove S4a and the front edge 3a2 of the window peripheral portion 3a of the outer panel 3 is inserted into the second outer insertion groove S4b.

[0027] A front lower corner V of the window peripheral portion 2a, which is composed of a front edge portion 2a2 of the window peripheral portion 2a of the inner panel 2 and a lower edge portion 2a1 of the window peripheral portion 2a, is not covered by either the inner weather strip S2 or the glass run S4. The front end of the inner weather strip S2 is located near the front lower corner V, and the lower end of the inner portion in the vehicle width direction that forms the second inner insertion groove S4a of the glass run S4 (in other words, the upper edge of the notch portion S4e) is located near the front lower corner V.

[0028] [Details of the sliding door structure] Next, the detailed structure of the sliding door 100 will be mainly described. FIG. 7 is a partial perspective view for explaining the internal structure of the sliding door 100, FIG. 8 is an enlarged plan view of a portion of the sliding door 100 including a corner reinforcement 8 described later, FIG. 9 is an enlarged perspective view of a portion of the sliding door 100 including the corner reinforcement 8, FIG. 10 is a partial perspective view of a cut model taken along line CC shown in FIG. 2, and FIG. 11 is a cross-sectional view taken along line CC shown in FIG. 2. FIG. 12 is a perspective view of the corner reinforcement 8. In addition, the inner panel 2 is removed in FIGS. 7 to 9. Also, FIG. 8 shows cross-sectional positions corresponding to the cross-sectional positions of lines AA, BB, and CC shown in FIG. 2. In FIGS. 10 and 11, the door weather strip S1 is omitted.

[0029] Referring to Figures 3 to 9, the sliding door 100 includes a corner reinforcement 8 to effectively suppress displacement in the vehicle width direction that may occur in an area including the front lower corner V of the window peripheral portion 2a of the inner panel 2 when the door is closed.

[0030] The corner reinforcement 8 is a reinforcing panel joined from the inside of the door body 1 to a lower portion 2a21 (see Figs. 5 and 6, etc.) of a front edge portion 2a2 of a window peripheral portion 2a surrounding the window hole 1b in the inner panel 2 and a front portion 2a11 (see Figs. 3, 4, 10, 11, etc.) of a lower edge portion 2a1 of the window peripheral portion 2a. The corner reinforcement 8 is formed by subjecting a thin metal steel plate to press forming or the like. The corner reinforcement 8 is joined to the inner panel 2 by spot welding. In each drawing, the spot welding points (spot welding points), which are the joining points W between the corner reinforcement 8 and the inner panel 2, are appropriately indicated by circles. The joining points W are set at multiple locations, and each joining point W will be described later.

[0031] Referring to Figure 12, in this embodiment, the corner reinforcement 8 consists of a rear flange 81 that is joined to the window peripheral portion 2a of the inner panel 2, a front flange 82 that is located forward of the rear flange 81, and an intermediate plate 83 that connects the rear flange 81 and the front flange 82.

[0032] The rear flange 81 and the front flange 82 extend generally in the up-down direction and the front-rear direction, respectively. Specifically, the rear flange 81 extends in the up-down direction from the upper end to a generally intermediate position in the up-down direction, and is bent inward in the vehicle width direction at a bent portion 811 provided at the intermediate position. The front flange 82 extends in the up-down direction from the upper end to a generally intermediate position in the up-down direction, and is bent outward in the vehicle width direction at a bent portion 821 provided at the intermediate position. In other words, the rear flange 81 and the front flange 82 are bent in opposite directions. The intermediate plate 83 extends from the front end of the rear flange 81 to the rear end of the front flange 82. The intermediate plate 83 has a rear vertical wall 83a extending outward in the vehicle width direction from the front end of the rear flange 81 and extending in the up-down direction, and a front vertical wall 83b extending inward in the vehicle width direction from the rear end of the front flange 82 and extending in the up-down direction.

[0033] In this embodiment, the rear flange 81 has a window leading edge joining flange portion 81a (see Figures 5 to 9 and 12) which extends in the vertical direction and is joined to the lower portion 2a21 of the leading edge portion 2a2 of the window peripheral portion 2a of the inner panel 2, and a window lower edge joining flange portion 81b (see Figures 3, 4, 10 to 12) which extends rearward from the lower portion of the window leading edge joining flange portion 81a and is joined to the front portion 2a11 of the lower edge portion 2a1 of the window peripheral portion 2a.

[0034] The window leading edge joining flange portion 81a is inserted into the second inner insertion groove S4a of the glass run S4 in a state where it is overlapped with the outer surface of the lower portion 2a21 of the leading edge portion 2a2 of the inner panel 2 in the vehicle width direction.

[0035] The window lower edge joint flange portion 81b extends from the lower portion of the window front edge joint flange portion 81a, which extends in the vertical direction, toward the front end of the inner weather strip S2, and the rear flange 81 is formed generally in an L-shape overall when viewed in a plan view from the inside in the vehicle width direction.

[0036] The window lower edge joining flange portion 81b has an insertion portion 81b1 that is inserted into the inside of the front end portion of the inner weather strip S2, and a window lower edge joining portion 81b2 that is continuous with the insertion portion 81b1, extends below the front end portion of the inner weather strip S2, and is joined to the inner panel 2.

[0037] The insertion portion 81b1 is a portion including the upper corner portion of the window lower edge joint flange portion 81b. The insertion portion 81b1 occupies a band-shaped region having a width corresponding to the insertion allowance downward from the upper end of the window lower edge joint flange portion 81b.

[0038] In this embodiment, the window lower edge joint portion 81b2 has an inclined surface 8a that is inclined so as to move away from the window leading edge joint flange portion 81a in the vehicle width direction as it goes downward. In the illustrated example, the insertion portion 81b1 is inclined in the same manner as the window lower edge joint portion 81b2, and forms a flat surface that is continuous with the inclined surface 8a of the window lower edge joint portion 81b2 without any steps.

[0039] 3, 4, and 7 to 11, in this embodiment, the sliding door 100 further has a window lower edge reinforcement 9 as a member for reinforcing the door main body 1. The window lower edge reinforcement 9 is a reinforcing member extending in the vehicle front-rear direction at a position facing the lower edge 2a1 of the window peripheral portion 2a of the inner panel 2 inside the door main body 1.

[0040] Specifically, the window lower edge reinforcement 9 is located above the door outer center reinforcement 7 and extends in the vehicle front-rear direction. The window lower edge reinforcement 9 is formed, for example, by press forming a thin metal steel plate. The window lower edge reinforcement 9 extends over almost the entire vehicle front-rear direction inside the door body 1 and protrudes forward from the front edge portion 2a2 of the window peripheral portion 2a. The front end of the window lower edge reinforcement 9 is joined to the front portion of the inner panel 2, and the rear end of the window lower edge reinforcement 9 is joined to the rear portion of the inner panel 2.

[0041] In this embodiment, the corner reinforcement 8 is located between the inner panel 2 and the window lower edge reinforcement 9. With reference to Figures 10 and 11, in a region forward of the window lower edge joint 81b2 of the corner reinforcement 8, the inner panel 2, the corner reinforcement 8, the window lower edge reinforcement 9, and the outer panel 3 are spaced apart from one another in the vehicle width direction. Also, the window glass G is configured to be able to slide up and down in the gap between the inner panel 2 and the window lower edge reinforcement 9.

[0042] Next, the positions of the joining points W (spot welding points) which are the spot welding locations of the corner reinforcement 8 will be described.

[0043] In the corner reinforcement 8, a joining point W with the inner panel 2 is set in each of the rear flange 81, the front flange 82, and the intermediate plate 83.

[0044] In the window leading edge joining flange portion 81a of the rear flange 81, the joining points W of the window leading edge joining flange portion 81a to the inner panel 2 are set at multiple locations (two locations in the illustrated example) spaced apart in the vertical direction on the window leading edge joining flange portion 81a.

[0045] In the window lower edge joint flange portion 81b of the rear flange 81, a joint point W of the window lower edge joint portion 81b2 with the inner panel 2 is set on the inclined surface 8a of the window lower edge joint portion 81b2. In the illustrated example, one joint point W is set on the inclined surface 8a.

[0046] 1 and 2, in this embodiment, a plurality of bulging portions 2b that are spaced apart from each other in the front-rear direction and bulge inward in the vehicle width direction are formed in the portion of the lower edge portion 2a1 of the window peripheral portion 2a of the inner panel 2 that is exposed outside the inner weather strip S2. The rigidity of the portion between two adjacent bulging portions 2b is increased. And, with reference to FIGS. 3, 5, 10 and 11, the window lower edge joint portion 81b2 is located between the two adjacent bulging portions 2b at the forefront of the plurality of bulging portions 2b. And the portion between the two adjacent bulging portions 2b at the forefront constitutes the highly rigid joint seat portion 2c. The inclined surface 8a of the window lower edge joint portion 81b2 is abutted against and joined to the back surface of this seat portion 2c.

[0047] In the front flange 82, the joint points W with respect to the inner panel 2 are set at the upper and lower parts of the bent portion 821 in the front flange 82. Although not particularly limited, the joint points W are set at a plurality of positions (two positions in the illustrated example) spaced apart in the vertical direction above the bent portion 821, and at one position below the bent portion 821. At the joint point W set below the bent portion 821 of the front flange 82, the front end portion of the window lower edge reinforcement 9, the front portion of the inner panel 2 (the upper edge portion of the panel peripheral portion 2A in the illustrated example), and the front flange 82 are joined to each other while overlapping each other. That is, the front end portion of the window lower edge reinforcement 9, the front portion of the inner panel 2, and the front portion of the corner reinforcement 8 (front flange 82) are joined in a triple-layered manner. Note that the front edge portion of the panel peripheral portion 2A of the inner panel 2 and the front edge portion of the outer panel 3 are each bent in a shape that generally matches the bent shape of the bent portion 821 of the front flange 82. The height positions of the bent portion 821 of the front flange 82, the bent portion of the front edge portion of the panel peripheral portion 2A of the inner panel 2, and the bent portion of the front edge portion of the outer panel 3 are aligned with the height position of the bent portion 811 of the rear flange 81.

[0048] A joining point W of the intermediate plate 83 to the inner panel 2 is set at a lower part of a front vertical wall 83b of the intermediate plate 83. The front vertical wall 83b of the intermediate plate 83 is joined to the rear surface of the front wall 23 of the inner panel 2.

[0049] Next, the operation of the vehicle sliding door structure according to this embodiment will be described.

[0050] In the sliding door 100 to which the above-mentioned vehicle sliding door structure is applied, the corner reinforcement 8 is joined to the lower portion 2a21 of the front edge portion 2a2 of the window peripheral portion 2a of the inner panel 2 and the front portion 2a11 of the lower edge portion 2a1 of the window peripheral portion 2a from the inside of the door body 1. Therefore, the corner reinforcement 8 increases the rigidity of the intermediate portion between the upper connecting portion 4 and the lower connecting portion 5 in the front portion of the door body 1, particularly the region including the front lower corner portion V of the window peripheral portion 2a surrounding the window hole 1b of the door body 1. As a result, the displacement in the vehicle width direction caused by the door closing is suppressed in the region including the front lower corner portion V of the window peripheral portion 2a of the door body 1. In this way, the sliding door 100 has a vehicle sliding door structure that can effectively suppress the displacement in the vehicle width direction that may occur in the region including the front lower corner portion V of the window peripheral portion 2a of the door body 1 when the door is closed. Furthermore, as the rigidity of the area including the front lower corner V is improved, stress concentration in this area can be suppressed.

[0051] In this embodiment, the corner reinforcement 8 has a window leading edge joining flange portion 81a which extends in the vertical direction and is joined to the lower part of the leading edge portion of the window peripheral portion, and a window lower edge joining flange portion 81b which extends rearward from the lower part of the window leading edge joining flange portion and is joined to the front part of the lower edge portion of the window peripheral portion, and the window lower edge joining flange portion 81b has an insertion portion 81b1 which is inserted inside the front end portion of the inner weather strip S2, and a window lower edge joining portion 81b2 which is continuous with the insertion portion 81b1, extends below the front end portion of the inner weather strip S2 and is joined to the inner panel 2. In general, it is desirable to set the spot welding points (joint points W) between panels at a position that avoids the sealing member, and the joint point for the portion of the window peripheral portion 2a of the inner panel 2 on the side of the lower edge 2a1 is set at the window lower edge joint portion 81b2 which is continuous with the insertion portion 81b1 which is inserted into the inner weatherstrip S2 and extends below the front end portion of the inner weatherstrip S2, and is therefore set at a position that avoids the front end portion of the inner weatherstrip S2. Therefore, even if the lower edge 2a1 of the window peripheral portion 2a is covered by the inner weather strip S2 and the front end of the inner weather strip S2 is located near the front end of the lower edge 2a1 of the window peripheral portion 2a (in other words, near the front lower corner V), the corner reinforcement 8 supports the lower edge 2a1 of the inner panel 2 from the back side by the insertion portion 81b1, while avoiding the inner weather strip S2 and joining to the inner panel 2 at a position (window lower edge joining portion 81b2) near the lower portion 2a11 of the lower edge 2a1 of the window peripheral portion 2a. As a result, the rigidity of the region including the front lower corner V of the inner panel 2 is improved while setting the joining point W at a position avoiding the inner weather strip S2.

[0052] In this embodiment, the window lower edge joint portion 81b2 has an inclined surface 8a that is inclined so as to move away from the window leading edge joint flange portion 81a in the vehicle width direction as it goes downward, and the joint point W of the window lower edge joint portion 81b2 to the inner panel 2 is set on the inclined surface 8a. As a result, the region of the joint point W of the window lower edge joint portion 81b2 to the inner panel 2 of the window lower edge joint flange portion 81b is inclined with respect to the window leading edge joint flange portion 81a extending in the vertical direction, and the rigidity of the joint portion of the corner reinforcement 8 to the window peripheral portion 2a is improved. As a result, the displacement in the vehicle width direction that may occur in the region including the front lower corner portion V of the window peripheral portion 2a of the door body 1 when the door is closed is more effectively suppressed, and stress concentration in this region is more effectively suppressed.

[0053] In this embodiment, in the region forward of the window lower edge joint 81b2 of the corner reinforcement 8, the inner panel 2, the corner reinforcement 8, the window lower edge reinforcement 9, and the outer panel 3 are spaced apart from each other in the vehicle width direction. As a result, in the region inside the door body 1, which is at the same height as the window lower edge joint 81b2 in the up-down direction and forward of the window lower edge joint 81b2 in the front-rear direction, the multiple panels (2, 8, 9, 3) are arranged in a spaced apart state from each other. As a result, the bending rigidity in the vehicle width direction of the front part of the door body 1 is increased, and the displacement in the vehicle width direction when the door is closed is more effectively suppressed.

[0054] In this embodiment, a plurality of bulging portions 2b that are spaced apart from each other in the front-rear direction and bulge inward in the vehicle width direction are formed in a portion of the lower edge portion 2a1 of the window peripheral portion 2a of the inner panel 2 that is exposed outside the inner weather strip S2. This increases the rigidity of the lower edge portion 2a1.

[0055] In this embodiment, the window lower edge joint 81b2 of the corner reinforcement 8 is located between the two adjacent front bulging portions 2b among the multiple bulging portions 2b. This increases the rigidity of the window lower edge joint 81b2, and effectively improves the support rigidity at the window lower edge joint 81b2.

[0056] Although the embodiment of the present invention has been described above, the present invention is not limited to the above-mentioned embodiment, and further modifications and changes are possible based on the technical concept of the present invention.

[0057] For example, in the present embodiment, the sliding door 100 is applied to a right rear sliding door, but may be applied to a left rear sliding door. In this case, a structure opposite to the above-mentioned structure in the vehicle width direction is applied. [Explanation of symbols]

[0058] 1...door body, 1a...door latch, 1b...window hole, 2…Inner panel, 2a...window periphery, 2a1...lower edge portion, 2a11...front portion of lower edge portion, 2a2...front edge portion, 2a21...lower portion of the front edge portion, 2b...bulge, 3...Outer panel, 4...Upper connecting part, 5...lower connection part, 6…Impact Beam, 7…Door outer center reinforcement, 8...corner reinforcement, 8a...inclined surface, 81a...window front edge joining flange portion, 81b...window lower edge joining flange portion, 81b1...insertion portion, 81b2...window lower edge joint portion, 9…Window bottom edge reinforcement, S1...Door weather strip, S2...Inner weather strip, S3...Outer weather strip, S4...Glass run, L1: Upper rail, L2: Lower rail, W: Junction point

Claims

1. a door body provided on a vehicle body side portion and having an inner panel and an outer panel disposed on the vehicle width direction outer side of the inner panel; an upper connecting portion that connects an upper front portion of the door body to an upper rail provided on the vehicle body side portion so as to be slidable in the vehicle front-rear direction along the upper rail; a lower connecting portion that connects a lower front portion of the door body to the lower rail provided on the vehicle body side so as to be slidable in the vehicle front-rear direction along the lower rail; A vehicle sliding door structure comprising: a corner reinforcement joined from the inside of the door body to a lower part of a front edge of a window peripheral portion surrounding the window hole in the inner panel and to a front part of a lower edge of the window peripheral portion.

2. an inner weather strip extending along the lower edge of the window periphery and covering an upper portion of the lower edge; The corner reinforcement has a window leading edge joining flange portion that extends in the up-down direction and is joined to a lower portion of the leading edge portion of the window peripheral portion, and a window lower edge joining flange portion that extends rearward from the lower portion of the window leading edge joining flange portion and is joined to a front portion of the lower edge portion of the window peripheral portion, 2. The vehicle sliding door structure according to claim 1, wherein the window lower edge joint flange portion has an insertion portion that is inserted into the inside of the front end portion of the inner weather strip, and a window lower edge joint portion that is continuous with the insertion portion and extends below the front end portion of the inner weather strip and is joined to the inner panel.

3. The window lower edge joint portion has an inclined surface that is inclined so as to move away from the window front edge joint flange portion in the vehicle width direction as it extends downward, 3. The vehicle sliding door structure according to claim 2, wherein a joining point of the window lower edge joining portion to the inner panel is set on the inclined surface.

4. A window lower edge reinforcement extending in a vehicle front-rear direction at a position facing the lower edge portion of the window peripheral portion inside the door body, the window lower edge reinforcement having a front end portion joined to a front portion of the inner panel and a rear end portion joined to a rear portion of the inner panel, The corner reinforcement is located between the inner panel and the window lower edge reinforcement, 4. The vehicle sliding door structure according to claim 2, wherein in a region forward of the window lower edge joint of the corner reinforcement, the inner panel, the corner reinforcement, the window lower edge reinforcement, and the outer panel are spaced apart from each other in a vehicle width direction.

5. 5. The vehicle sliding door structure according to claim 4, wherein a portion of the lower edge of the window peripheral portion of the inner panel that is exposed outside the inner weather strip has a plurality of bulging portions that are spaced apart from each other in the fore-and-aft direction and bulge inward in the vehicle width direction.

6. 6. The vehicle sliding door structure according to claim 5, wherein the window lower edge joint portion of the corner reinforcement is located between two adjacent frontmost bulges of the plurality of bulges.

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