JP2018149959A - Vehicle structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle structure that is able to achieve both drainage and strength.SOLUTION: A vehicle structure comprises: a side sill 2 extending in forward and backward directions; and a lower-rail accommodating part 5 provided in the side sill 2 and accommodating a lower rail 4 for a slide door 3. The lower-rail accommodating part 5 includes: a bottom part 15 broadening inward in a vehicle width direction as the bottom part extends in a closing direction C of the slide door 3 and descending in the closing direction C; a rolling surface 44 disposed inward in the vehicle width direction along the closing direction C and on which a slide roller 20 of the slide door 3 rolls; and a vertical wall part 46 formed between the bottom part 15 and the rolling surface 44 and increasing dimensions h1 to h3 in a height direction as the vertical wall part extends in the closing direction C. In an end, in the closing direction C, of the bottom part 15, a drain opening 50 is formed.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a vehicle body structure.

As a conventional vehicle body structure, there is known a structure in which a lower rail storage portion in which a lower rail of a slide door is stored is provided inside a side sill.
In such a thing, the bottom face part of the lower rail accommodating part is comprised by the flat plate member of the planar view rectangular shape which followed the longitudinal direction in the vehicle front-back direction.
A rail portion extending in the vehicle front-rear direction is disposed on the bottom surface portion to form a closed cross-sectional structure. A slide roller rolling surface on which the lower slide roller rolls is formed on the upper surface of the rail portion.
The bottom surface portion is inclined from approximately the center in the vehicle longitudinal direction toward the vehicle longitudinal direction. Water drainage holes are formed in the vicinity of the front and rear edge portions of the bottom surface.

JP-A-5-155252

In the conventional vehicle body structure, when the bottom surface is widened, the rigidity and drainage are reduced.
An object of this invention is to provide the vehicle body structure which can aim at coexistence of drainage property and intensity | strength.

  The present invention includes a side sill that extends in the front-rear direction of the vehicle, and a lower rail storage portion that is provided on the side sill and that stores a lower rail of the slide door that opens and closes in the front-rear direction. As it goes to the direction, it expands to the inside of the vehicle width, and it is arranged on the inside of the vehicle width as it goes in the closing direction, on the bottom surface part that slopes down toward the closing direction, and on the inside of the vehicle width of the bottom surface part A rolling surface that rolls the slide roller of the sliding door, and a vertical wall portion that is formed between the bottom surface portion and the rolling surface and increases in height as it goes in the closing direction. The bottom portion is characterized by a vehicle body structure having a drain outlet at the end in the closing direction.

According to the present invention, it is possible to form a drain outlet in the bottom surface portion that can be deeply formed at the end portion in the closing direction that expands inward in the vehicle width as the sliding door moves in the closing direction. For this reason, drainage is good.
Moreover, strength can be improved by the vertical wall part which increases the dimension of a height direction toward the closing direction of a slide door. Even if the drainage port is formed at a position where the bottom portion extends in the vehicle width inside direction at the end portion in the closing direction of the sliding door that is inclined downward, sufficient rigidity to support the sliding door can be obtained.
Therefore, it is possible to provide a vehicle body structure that can achieve both drainage and strength.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially broken perspective view showing an overall configuration of a vehicle with a vehicle body structure according to an embodiment of the present invention. It is the perspective view which looked at the center pillar lower part from the vehicle body inner side in the vehicle body structure of embodiment. It is sectional drawing in the position along the III-III line in FIG. 2 explaining the shape of the lower rail accommodating part and step part in a center pillar lower part by the vehicle body structure of embodiment. It is a typical top view of a lower rail accommodating part. FIG. 5 is a cross-sectional view at a position along the line VV in FIG. 4 in the lower rail storage unit. FIG. 5 is a cross-sectional view of a position along the line VI-VI in FIG. 4 in the lower rail storage unit. FIG. 5 is a cross-sectional view of a position along a line VII-VII in FIG. 4 in the lower rail storage unit.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings as appropriate. The same components are denoted by the same reference numerals, and redundant description is omitted. When describing the directions, unless otherwise indicated, the description will be basically based on the front, rear, left, right, top and bottom viewed from the driver. Further, “vehicle width direction” is synonymous with “left-right direction”.

  As shown in FIGS. 1 and 2, a pair of side sills 2 extend along the longitudinal direction in the vehicle front-rear direction below the left and right sides of the vehicle 1 of this embodiment. Of these, the left side sill 2 constitutes the lower edge of the door opening 1a of the rear seat 1b.

The side sill 2 has a side sill outer 12 and a side sill inner 13 (see FIG. 3). The side sill outer 12 and the side sill inner 13 are configured to be substantially hollow box-shaped in cross section in the vehicle width direction by being joined in the vehicle width direction.
Further, a center pillar 7 is erected upward from the side sill 2.
As shown in FIG. 1, a rail guide opening 2 a is formed in the side surface portion on the outer side of the vehicle on the side sill 2 positioned behind the vehicle to which the center pillar 7 is connected.

The door opening 1a is provided with a slide door 3. The sliding door 3 opens and closes the door opening 1 a by sliding in the vehicle front-rear direction along the extending direction of the side sill 2.
On the other hand, a positioning pin member 60 is fixed to the end of the rail guide opening 2a in the closing direction C of the slide door 3. When the slide door 3 moves in the closing direction C, the positioning pin member 60 engages with a door catcher hole (not shown) on the slide door 3 side in the door closed state.

The side sill 2 of the vehicle 1 of this embodiment includes a lower rail storage portion 5 (see FIGS. 3 and 4).
As shown in FIG. 3, the lower rail storage portion 5 includes a bottom surface portion 15, a top surface portion 16 provided in parallel, and a side surface portion 17, with a space portion having a constant height direction interval in the bottom surface portion 15. It has a cross-sectional box shape that houses the lower rail 4 of the slide door 3 that opens and closes in the front-rear direction.

The lower rail storage portion 5 has an opening 5a that opens the side surface on the outside of the vehicle, thereby forming a substantially U-shaped cross section in the vehicle width direction.
The opening 5 a of the lower rail housing 5 is disposed so as to coincide with the rail guide opening 2 a of the side sill 2.
As a result, the internal space of the lower rail housing 5 is communicated with the external space outside the vehicle via the opening 5a and the rail guide opening 2a.

[Bottom]
As shown in FIG. 4, on the lower surface side of the lower rail housing portion 5, the bottom surface portion 15 is expanded inward in the vehicle width toward the closing direction C of the slide door 3 so as to have a substantially triangular shape in plan view. Is formed.
In this embodiment, a rolling surface 44 adjacent to the vehicle interior side edge of the bottom surface portion 15 on the inner side of the vehicle width is provided on the lower surface side inside the lower rail housing portion 5. A step portion 6 is provided inside the rolling surface 44 in the vehicle width direction. The bottom surface portion 15, the lower rail 4, and the step portion 6 are bent together with the side surface portion 17 erected from the step portion 6 so as to be integrated with one panel member.

Moreover, the lower rail storage part 5 of this embodiment has the drawing-in part 5b at the apex inside the vehicle width inner side in front of a substantially triangular shape in plan view.
The lead-in part 5b is bulged in a bag shape toward the lower side of the floor panel 19 located in the vehicle interior.
The lower rail 4 and the stepped portion 6 are bent so as to expand toward the vehicle width inner side in the closing direction C, and extend toward the inside of the retracting portion 5b.
The shape of the lower rail storage portion 5 in a top view is set to be slightly larger than the bottom surface portion 15 by providing the lower rail 4 and the stepped portion 6 therein.
That is, the lower rail storage portion 5 is substantially similar to the bottom surface portion 15, and has a substantially triangular shape in which the horizontal cross-sectional shape (the shape in a top view) is expanded toward the vehicle width inner side in the closing direction C of the slide door 3. It is configured.

[Drainage structure]
As shown in FIG. 2, the bottom surface portion 15 of this embodiment is inclined downward in the closing direction C.
A drainage port 50 through which water on the bottom surface 15 flows down is formed at the end of the bottom surface 15 in the closing direction C. In this embodiment, the drainage port 50 is formed so that the inlet side opening located on the upper surface of the bottom surface part 15 is wider than the outlet side opening located below the bottom surface part.

Further, as shown in FIG. 4, a valley groove portion 70 is formed in a straight line in the vehicle width direction substantially center of the bottom surface portion 15 so as to avoid the positioning pin member 60 toward the drain port 50. An end 71 of the valley groove 70 extends toward the drain port 50.
Further, in this embodiment, left and right trough grooves 72 and 74 that extend in the vehicle width direction and are connected to the drainage port 50 are formed in a straight line avoiding the positioning pin member 60. The end portions 73 and 75 of the left and right valley groove portions 72 and 74 are extended toward the drain port 50, respectively.

And the slope located in the both sides of each valley groove part 70 of the bottom face part 15, and the left and right valley groove parts 72 and 74 inclines so that water may flow toward the linear bottom part direction of each groove | channel.
Among these, the trough portion 70 has a ridge line formed in the vehicle front-rear direction so as to protrude toward the vehicle lower side. For this reason, the rigidity of the bottom face part 15 can be improved.
Further, the valley groove portion 70 and the left and right valley groove portions 72 and 74 are given predetermined inclination angles inclined downward toward the respective end portions 71, 73, and 75 (see FIGS. 5 and 6). .
For this reason, the water on the upper surface of the bottom surface portion 15 flows down by the downward slope and is collected in the direction of the drain outlet 50 regardless of the portion of the bottom surface portion 15.

[Rail part]
As shown in FIG. 3, the lower rail 4 of the slide door 3 that opens and closes in the vehicle front-rear direction is provided on the inner surface side of the lower rail storage portion 5 of this embodiment. The lower rail 4 has an upper guide 41 and a lower rail portion 43.

Among these, the upper guide 41 is formed in a substantially U-shaped cross section with its lower part opened.
The upper guide 41 of the lower rail 4 is configured to be paired with the lower rail portion 43 in the vertical direction.

In addition, the lower rail portion 43 includes a horizontal rolling surface 44 on which the slide roller 20 of the slide door 3 is placed and rolled, and a vertical wall portion 46.
The rolling surface 44 is arranged inside the vehicle width of the bottom surface portion 15 and inside the vehicle width as it goes in the closing direction C. Furthermore, the rolling surface 44 is extended horizontally, and the slide roller 20 is brought into contact with the upper surface to roll.
Then, when the sliding door 3 is opened and closed, the slide roller 20 (see FIGS. 5 to 7) is moved along the extending direction of the rolling surface 44 of the lower rail 4.

The slide roller 20 is pivotally supported by a door arm member (not shown). The door arm member extends from the slide door 3 and is inserted through the opening 5a and the rail guide opening 2a into the space in the lower rail storage portion 5.
For this reason, the slide door 3 slides in the vehicle front-rear direction along with the movement of the door arm member by the rolling of the slide roller 20, and opens and closes the door opening 1a.

Furthermore, the lower rail 4 of this embodiment is provided with a vertical wall portion 46 on the bottom surface portion 15 side. The vertical wall portion 46 is formed integrally with the bottom surface portion 15 and the rolling surface 44 by bending a single plate member.
Further, as shown in FIG. 2, the bottom surface portion 15 is inclined downward toward the drain port 50. For this reason, the vertical wall part 46 extended horizontally increases the dimension h1-h3 from the position of the height direction of the bottom face part 15 as it goes to the closing direction C relatively (FIGS. 5-5). 7).

[Step part]
Further, the lower rail storage portion 5 of this embodiment has a step portion 6 that is one step higher than the rolling surface 44 inside the rolling surface 44 in the vehicle width direction.
The step portion 6 of this embodiment has a step surface 54 that is one step higher than the rolling surface 44. The step surface 54 is formed so as to be integrated in a step shape by bending a single plate member continuous from the rolling surface 44.
Further, the side surface portion 17 of the lower rail housing portion 5 is formed by connecting the side edge portion 16a of the upper surface portion 16 and the side edge portion 15a of the bottom surface portion 15 in the vertical direction and connecting them in a circumferential shape.

[Brace]
In the vehicle body structure of this embodiment, a brace 10 as a reinforcing member that reinforces the side sill 2 is provided between the side sill outer 12 and the side sill inner 13 as shown in FIG. The brace 10 is formed of a panel-like member having a substantially trapezoidal shape when viewed from the front (see FIG. 4).
By connecting the upper and lower flange portions of the side sill outer 12, the brace 10 can suppress the opening deformation of the side sill in the vertical direction and improve the rigidity against the side collision.

The brace 10 is integrally formed with a flange portion 11 at a side edge portion on the vehicle rear side. The flange part 11 is formed so as to be substantially L-shaped in a horizontal section. And the flange part 11 is overlapped and joined in the vehicle front-back direction in the brace junction part 100 located in the edge part 5c of the closing direction C of the lower rail accommodating part 5. FIG.
Thereby, the lower rail storage part 5 can transmit the load of the stored lower rail 4 to the side sill 2 which is a vehicle body side strength member via the brace 10. Therefore, it is not necessary to separately provide a bracket or the like for supporting the lower rail storage portion 5, and a desired support rigidity can be obtained.

The lower rail storage portion 5 is supported via a brace joint portion 100 provided substantially at the center in the vehicle width direction of the bottom surface portion 15 among the standing walls provided upright at the end portion 5c of the lower rail storage portion 5. Yes.
For this reason, even if the bottom surface portion 15 is expanded to the inside of the vehicle width so that smooth drainage is possible, the support rigidity of the lower rail housing portion 5 is not impaired.

The brace 10 is formed with a bead 10b extending along the longitudinal direction in the vertical direction.
A plurality of beads 10b are provided at predetermined intervals and are arranged substantially in parallel so as to extend along the longitudinal direction in the vertical direction, and are formed so as to bulge toward the side sill inner 13 side which is the vehicle interior side. Has been. Thereby, the brace 10 can obtain a desired rigidity in the in-plane and out-of-plane directions.

Further, the brace 10 is formed with an opening 10c that extends in the longitudinal direction between the plurality of pairs of beads 10b and 10b (see FIG. 2). A bridge portion 10d that connects the pair of beads 10b and 10b to each other is formed in the middle portion in the longitudinal direction of the opening 10c.
Thereby, the brace 10 can maintain rigidity by the bridge portion 10d while reducing the weight by reducing the thickness of the opening 10c.

Further, the brace 10 is formed with a work hole 10 a in the vicinity of the brace joint portion 100 with the lower rail storage portion 5. The work hole 10a is formed in a size that allows a welding torch to be inserted when the side sill outer 12 is connected to the pillar outer.
[Function and effect]

Next, the effect of the vehicle body structure of this embodiment will be described.
In the vehicle 1 of the embodiment configured as described above, a side sill 2 extending in the front-rear direction, and a lower rail storage portion 5 provided in the side sill 2 and storing the lower rail 4 of the slide door 3 that opens and closes in the front-rear direction. I have.
And the lower rail accommodating part 5 is expanded inside a vehicle width | variety as it goes to the closing direction C of the slide door 3. As shown in FIG. The lower rail storage portion 5 is disposed on the inner side of the bottom surface portion 15 that slopes downward in the closing direction, and on the inner side of the bottom surface portion 15 toward the closing direction C, and rotates the slide roller 20. The rolling wall 44 to be moved, and the vertical wall portion formed between the bottom surface portion 15 and the rolling surface 44 and having height dimensions h1 to h3 (see FIGS. 5 to 7) increasing in the closing direction. 46.
And the bottom face part 15 has the drain outlet 50 in the edge part of a close direction.

According to this, the bottom face part 15 which inclines down toward the closing direction C (vehicle forward direction) of the slide door 3 is improved in strength by the vertical wall part 46 which increases the dimensions h1 to h3 in the height direction. Can do.
For this reason, the bottom surface portion 15 obtains sufficient rigidity to support the slide door 3 even if the drainage port 50 is formed at the position where the end portion in the closing direction C of the slide door 3 expands inward in the vehicle width. I can do it.
For example, in the embodiment, sufficient rigidity is given to the bottom surface portion 15 where the drainage port 50 is formed. For this reason, the opening part which takes in the water of the upper side of the bottom face part 15 can be made into a wide mouth shape, and also drainage efficiency can be made favorable.
Therefore, drainage performance can be improved by giving the bottom part 15 a desired downward slope with good water collection efficiency and allowing water to flow smoothly.

Furthermore, in this embodiment, even if the rolling surface 44 is configured by a single panel member together with the bottom surface portion 15 and the vertical wall portion 46, the rigidity required for supporting the slide door 3 can be provided.
Thus, a vehicle body structure capable of achieving both drainage and strength is provided.

Moreover, the bottom face part 15 forms the trough part 70 along the front-back direction of a vehicle. The trough groove 70 forms a trough groove 70 extending toward the drain port 50.
If the water on the bottom face part 15 flows in, the trough part 70 can guide toward the closing direction C, and can be smoothly flowed down to the drain outlet 50. FIG.

In this embodiment, left and right trough grooves 72 and 74 extending in the vehicle width direction are further connected to the drain port 50. For this reason, when the water on the bottom face part 15 flows in, the left and right trough grooves 72 and 74 can be guided toward the drain outlet 50 and smoothly flow down.
Moreover, the water flowing in the closing direction C on the bottom surface 15 is weakened and blocked by the left and right trough grooves 72 and 74. For this reason, it is easy to flow down to the drain 50 more efficiently.

In particular, in the vicinity of the end C in the closing direction of the expanded bottom surface 15, there are inclinations from the left and right directions toward the trough 70 and inclinations from the vehicle front-rear direction toward the left and right troughs 72 and 74. Intersection, almost mortar-shaped and can be the lowest part.
For this reason, drainage efficiency can be further improved by setting the drain outlet 50 in the lowest part of the bottom.
Further, the valley groove portion 70 can improve the rigidity of the bottom surface portion 15.
Moreover, the trough groove 70 and the left and right trough grooves 72 and 74 are recessed in directions different by approximately 90 degrees. For this reason, while giving desired rigidity to the flat bottom face part 15, it can aim at coexistence as a thing with favorable drainage.

Further, the lower rail storage portion 5 has a step portion 6 that forms a step surface 54 that is one step higher than the rolling surface 44 inside the rolling surface 44 in the vehicle width direction of the rolling surface 44.
In this way, the stepped portion 6 that increases the strength due to the difference in height can be formed at least on the side of the closing direction C by using a relatively wide portion having a substantially triangular shape that is expanded in the vehicle width inner direction. it can. Therefore, the rigidity of the expanded part can be further improved.

Furthermore, in this embodiment, as shown in FIG. 3, the vertical wall portion 46 of the lower rail 4 and the step surface 54 of the step portion 6 in the vehicle width direction of the bottom surface portion 15 are spaced by the dimension in the width direction of the rolling surface 44. They are arranged in a stepped fashion.
For this reason, it is not necessary to form a closed cross-sectional structure in the bottom face part 15 separately using a cross-sectional hat-shaped or U-shaped reinforcing member. Therefore, the number of parts can be reduced and sufficient rigidity can be obtained.

In addition, in this embodiment, the trough groove portion 70 and the stepped portion 6 are distributed and arranged on the left and right of the rolling surface 44 on which the slide roller 20 rolls in the vehicle width direction.
For this reason, the load applied to the rolling surface 44 is distributed and supported by each trough part 70 and the step part 6. For this reason, support rigidity can be improved further.

The vehicle 1 includes a brace 10 disposed inside the side sill 2. The brace 10 is joined by a brace joint portion 100 made of a standing wall that is erected on an end portion 5c on the closing direction C side of the slide door 3 of the lower rail storage portion 5.
The end portion 5 c joined to the brace 10 is a portion of the lower rail housing portion 5 that can be expanded most and the bottom surface portion 15 can be deepened.
For this reason, the support rigidity of the lower rail storage part 5 can be further improved, and the mounting rigidity of the lower rail 4 can be sufficiently ensured.

Thus, the vehicle body structure of this embodiment can provide a vehicle body structure that can achieve both drainage and strength.
Further, the heights h <b> 1 to h <b> 3 are increased as the vertical wall portion 46 moves in the closing direction C of the slide door 3. For this reason, while obtaining sufficient support rigidity, the number of parts for forming a conventional closed cross-sectional structure can be reduced and the weight can be reduced.

  The present invention is not limited to the above-described embodiments, and various modifications can be made. The above-described embodiments are illustrated for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described. Further, a part of the configuration of an embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of an embodiment. Further, it is possible to delete a part of the configuration of each embodiment, or to add or replace another configuration. Possible modifications to the above embodiment are as follows, for example.

  In the vehicle body structure of this embodiment, the upper part 10h of the brace 10 is joined to the lower part of the center pillar 7. However, the present invention is not limited to this, and the brace 10 and the center pillar 7 may be independent. Further, the brace 10 may not be provided.

In the vehicle body structure of this embodiment, the end portion 5c of the lower rail storage portion 5 facing in the front-rear direction faces the vehicle front, and the flange portion 11 is overlapped from the front in the vehicle front-rear direction and joined by the brace joint portion 100. It has been shown and explained.
However, for example, a case where the present invention is applied to a door that is opened by sliding toward the front of the vehicle 1 is also included.
In such a case, the drain port 50 is positioned on the rear side of the vehicle, and the bottom surface portion that expands inward in the vehicle width toward the rear of the vehicle, which is the closing direction of the sliding door, and is inclined downward toward the closing direction. It may be formed.
Thus, the position of the drain 50 applied according to the arrangement position of the door and the opening direction is not particularly limited.

  Further, the shape and quantity of the beads 10b of the brace 10 are not particularly limited to the vehicle 1 of the embodiment. Furthermore, the shape and quantity of the opening 10c are not particularly limited. And the shape and quantity of the bridge | bridging part 10d are not specifically limited.

Furthermore, in the embodiment, the step surface 54 of the step portion 6 that is one step higher than the rolling surface 44 is formed inside the rolling surface 44 in the vehicle width direction. The step portion 6 does not need to have the same longitudinal dimension as the rolling surface 44, and is at least formed in a portion where the bottom surface portion 15 expands inside the vehicle width in the closing direction C. Good. For this reason, the shape and size of the stepped portion 6 are not particularly limited.

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Side sill 3 Sliding door 4 Lower rail 5 Lower rail accommodating part 6 Step part 15 Bottom part 20 Slide roller 43 Lower rail part 44 Rolling surface 46 Vertical wall part 50 Drain outlet 70 Valley groove part 71,73 End part 72,74 Left , Right trough groove 100 brace joint

Claims (4)

A side sill extending in the longitudinal direction of the vehicle;
A lower rail storage portion that is provided on the side sill and stores a lower rail of a sliding door that opens and closes in the front-rear direction;
The lower rail storage portion is
As the slide door extends in the closing direction, the inside expands toward the vehicle width side, and a bottom surface that inclines downward toward the closing direction; and
Inside the vehicle width inside the bottom surface portion, and arranged on the vehicle width inside as it goes in the closing direction, and a rolling surface that rolls the slide roller of the slide door,
A vertical wall portion formed between the bottom surface portion and the rolling surface and having a height dimension that increases in the closing direction;
The bottom surface portion has a drain outlet at the end in the closing direction.
Body structure characterized by that. The bottom surface portion has a groove portion extending in the front-rear direction,
An end portion in the closing direction of the groove portion is extended toward the drain port.
The vehicle body structure according to claim 1.   3. The vehicle body structure according to claim 1, wherein the lower rail housing portion has a step portion that is one step higher than the rolling surface inside a vehicle width of the rolling surface. Further comprising a brace disposed inside the side sill,
The one end part of the front-back direction of the said brace is joined to the brace junction part standingly arranged by the edge part of the closing direction of the said lower rail accommodating part, The any one of Claims 1-3 characterized by the above-mentioned. The vehicle body structure described in 1.

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