JP2019147501A - Vehicle structure - Google Patents

Abstract

To provide a vehicle structure which can inhibit displacement of a floor panel forming a lower surface of a vehicle during a lateral collision of the vehicle.SOLUTION: A vehicle structure 1 includes slide doors 100 at a lateral side of a vehicle 10 and includes a floor panel 2 forming a lower surface of the vehicle 10, cylindrical rockers 4, a cross member 3, box shaped bodies 5, and wall members 6. Each rocker 4 is fixed to the floor panel 2 and has an inner through hole 43 formed at an inner side of the vehicle 10. The cross member 3 is fixed to the floor panel 2 and the rockers 4. The box shaped body 5 houses a slide guide mechanism 72 of each slide door 100 in an area ranging from a protruding part 51 to a rear side of a storage part 55. The protruding part 51 protrudes from the inner through hole 43 to a vehicle inner side. The storage part 55 forms a storage space which communicates with an internal space of the protruding part 51 in the rockers 4. The wall member 6 is fixed to the floor panel 2, the rockers 4, and the cross member 3 so as to enclose a periphery of the protruding part 51.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a vehicle structure that includes a sliding door that is slidable in the front-rear direction of a vehicle on the side of the vehicle. In particular, the present invention relates to a vehicle structure that can suppress displacement of a floor panel that forms a lower surface of the vehicle at the time of a side collision of the vehicle.

  2. Description of the Related Art As a vehicle structure that includes a sliding door that is slidable in front and rear of a vehicle on the side of the vehicle, a vehicle that includes a sliding door device for a vehicle disclosed in Patent Document 1 is known. A vehicle including the slide device includes a floor panel, a rocker, a cross member, a box-like support, and a door drive unit.

  The floor panel forms the lower surface of the passenger compartment. The rocker extends long in the front-rear direction at the lower part of the side wall of the vehicle body to form the lower edge of the door opening. The rocker has a hollow closed cross-section structure in which each part in the longitudinal direction joins the inner panel and the outer panel. A through hole (inner through hole) is formed in the inner panel (vehicle inner surface) of the rocker, and the outer panel opens toward the outside in the width direction of the vehicle body so as to open inside the lower end of the door. An opening (outside opening) is formed. The cross member extends in the width direction of the vehicle body and is coupled to the floor panel and the rocker. The box-shaped support body accommodates a part of the door drive unit therein, and extends in the vehicle interior from a portion (storage portion) that extends in the front-rear direction and is accommodated in the rocker and a through hole of the rocker. It has one end part (overhang part). The portion housed in the rocker is coupled to the edge of the opening of the rocker to form an opening (outside insertion port) that opens toward the outside in the width direction of the vehicle body. A through hole (upper surface through hole) is formed on the upper surface of the one end. The door drive unit includes a drive unit main body and a drive force transmission unit. The drive unit main body has an electric motor attached to one end of the box-shaped support. The driving force transmission unit is housed from one end of the box-like supporter to the rear of the vehicle housed in the rocker, and transmits the driving force of the electric motor to the sliding door to slide the sliding door back and forth.

JP 2013-226874 A

  The rocker's rigidity is reduced by forming an inner through-hole for projecting the overhang of the box-shaped support body to the inside of the car on the inner surface of the rocker. It becomes easy to displace.

  One of the objects of the present invention is to provide a vehicle structure that can suppress displacement of a floor panel that forms the lower surface of the vehicle at the time of a side collision of the vehicle.

A vehicle structure according to one aspect of the present invention includes:
A vehicle structure including a sliding door that is slidable forward and backward of the vehicle on a side of the vehicle,
A floor panel forming a lower surface of the vehicle;
A cylindrical rocker that is fixed to the floor panel along the front-rear direction of the vehicle and has an inner through hole formed inside the vehicle;
A cross member extending in the vehicle width direction and fixed to the floor panel and the rocker;
A projecting portion projecting from the inner through-hole to the vehicle interior; and a housing portion that is housed in the rocker and forms a housing space that communicates with the internal space of the projecting portion, and slides the slide door. A box-shaped body that houses the slide mechanism from the overhanging portion to the rear of the housing portion;
A wall member fixed to the floor panel, the rocker, and the cross member so as to surround the periphery of the projecting portion;

  The said vehicle structure can suppress the displacement of the floor panel which forms the lower surface of a vehicle at the time of the side collision of a vehicle. Even if an inner through-hole is formed on the side surface of the rocker to project the overhanging portion toward the inside of the vehicle, the wall member is provided so that the wall member is displaced by the floor panel, particularly in the vehicle front-rear direction. This is because the displacement of the floor panel toward the inside of the vehicle can be suppressed by suppressing the displacement of the floor panel.

1 is a side view of a vehicle including a vehicle structure according to a first embodiment. 1 is a perspective view illustrating an outline of a vehicle structure according to a first embodiment. It is sectional drawing which shows the outline of the vehicle structure cut | disconnected by the (III)-(III) cutting line of FIG.

  Embodiment 1 of the vehicle structure of the present invention will be described below with reference to FIGS. The same reference numerals in the figure indicate the same names. In the figure, “UP” indicates the upper side of the vehicle, “LWR” indicates the lower side, “RH” indicates the right side, “LH” indicates the left side, “FR” indicates the front side, and “RR” indicates the rear side.

Embodiment 1
[Vehicle structure]
The vehicle structure 1 according to the first embodiment includes a slide door 100 that is slidable forward and backward of the vehicle 10 on the side of the vehicle 10 (FIG. 1). The slide door 100 is a power slide door that is provided behind the vehicle 10 and is electrically slid. The vehicle structure 1 includes a floor panel 2, a cross member 3 that extends in the vehicle width direction, a rocker 4 that is fixed to the floor panel 2 and has an inner through hole 43 formed inside the vehicle 10, and an inner through-hole of the rocker 4. And a box-like body 5 having an overhanging portion 51 projecting from the hole 43 toward the inside of the vehicle. One of the features of the vehicle structure 1 is that it includes a wall member 6 that is fixed to the floor panel 2, the rocker 4, and the cross member 3 so as to surround the periphery of the protruding portion 51 of the box-shaped body 5. Hereinafter, each configuration will be described in detail.

[Floor panel]
The floor panel 2 forms the lower surface of the vehicle 10 (FIGS. 2 and 3). The floor panel 2 is made of, for example, a steel plate formed into a predetermined shape. The floor panel 2 of this example is provided with a drain hole 21 (FIG. 3). The drain hole 21 is a hole for discharging water (described later) that has entered the floor panel 2 from the outside of the vehicle 10 to the outside of the vehicle 10, and is a through hole penetrating the upper and lower surfaces of the floor panel 2. The number of drain holes 21 may be single or plural. The formation location of the drain hole 21 may be the floor panel 2 in the wall member 6 or the floor panel 2 outside the wall member 6. In this example, at least one drain hole 21 is formed on the floor panel 2 in the wall member 6. More specifically, the drain hole 21 is formed on the vehicle outer side (the rocker 4 side) of the side member 120 in the floor panel 2 in the wall member 6. Thereby, although a detailed intrusion route will be described later, water entering from the gap (FIG. 3) between the inner through-hole 43 of the rocker 4 and the box-like body 5 can be discharged as much as possible without advancing to the inside of the vehicle.

[Cross member]
The cross member 3 reinforces the floor panel 2 (FIG. 2). The cross member 3 is a long member extending in the vehicle width direction, and is formed of a plate material in this example. A floor panel 2, a rocker 4, and a wall member 6 are fixed to the cross member 3. The location where the cross member 3 is arranged is in the vicinity of the center pillar 130 in this example, and is on the front side of the inner through-hole 43 described later. The cross member 3 may be disposed on the rear side of the inner through hole 43 described later. The shape (cross-sectional shape) of the cross member 3 is a hat shape.

[Rocker]
The rocker 4 forms the lower edge of the door opening 110 at the side of the vehicle 10 (FIGS. 1 to 3). The rocker 4 has a long main body 41 that is fixed to the floor panel 2 along the front-rear direction of the vehicle 10 between the inside of the lower end of the sliding door 100 and the floor panel 2 (FIGS. 2 and 3). ). The main body 41 is formed by joining the inner panel 4i and the outer panel 4o in a hollow cylindrical shape (FIG. 3). The main body 41 is formed with an outer opening 42 and an inner through hole 43.

  The outer opening 42 is an opening for storing the box-like body 5 in the main body 41 (in the rocker 4) from the outside of the vehicle 10 (FIG. 3). The outer opening 42 is provided in the outer panel 4 o of the main body 41 so as to open inside the lower end of the slide door 100. The outer opening 42 is formed in a region extending over substantially the entire length of the lower edge of the door opening 110 (FIG. 1).

  The inner through hole 43 is a hole through which the projecting portion 51 of the box-shaped body 5 is inserted to project to the vehicle inner side (FIGS. 2 and 3). The inner through hole 43 is formed in the inner panel 4 i of the main body 41 so as to open above the floor panel 2. The shape of the inner through hole 43 is a rectangular shape, and the size thereof is slightly larger than the overhanging portion 51.

[Box]
The box-like body 5 houses a slide mechanism 72 provided in a door drive unit 7 (FIG. 3) described later that slides the slide door 100 back and forth (FIGS. 2 and 3). The box-like body 5 is formed by joining an upper plate 5u and a lower plate 5d in a hollow cylindrical shape. The box-like body 5 is formed from a storage portion 55 accommodated in the rocker 4 and an inner through hole 43 of the rocker 4 to the vehicle interior side. And an overhanging portion 51 that projects to the surface. The slide mechanism 72 is accommodated from the overhanging portion 51 to the rear of the accommodating portion 55 (on the right side in FIG. 2, the front side in FIG. 3).

  The storage portion 55 forms a storage space that communicates with the internal space of the overhang portion 51 in the rocker 4 (FIG. 3). The storage portion 55 is formed in a long shape along the length of the rocker 4. The storage portion 55 is joined to the rocker 4. An outer insertion port 57 that opens to overlap the outer opening 42 of the rocker 4 is provided on the vehicle outer side of the storage portion 55. In this example, the opening edge of the outer insertion port 57 is joined to the opening edge of the outer opening 42 of the rocker 4. The outer insertion port 57 is inserted inside the box-like body 5 by being connected to the inside of the lower end portion of the slide door 100 and supporting the slide door 100.

  The overhanging portion 51 protrudes from the inner through hole 43 of the rocker 4 to the inside of the vehicle (FIG. 3). The overhanging portion 51 is formed in series on the front side of the vehicle 10 in the storage portion 55 and on the vehicle interior side so that the internal space thereof communicates with the storage space of the storage portion 55. The overhanging part 51 of this example is substantially suspended in the air and forms a space between the floor panel 2. On the upper surface (upper plate 5 u) of the overhang portion 51, an upper surface through hole 53 for connecting an electric motor 71 provided in the door drive unit 7 described later to a slide mechanism 72 in the overhang portion 51 is formed.

[Wall members]
The wall member 6 is fixed to the floor panel 2, the cross member 3, and the rocker 4 so as to surround the periphery of the overhanging portion 51 (FIGS. 2 and 3). Even if the inner through hole 43 is formed in the rocker 4 by the wall member 6, the wall member 6 can suppress the displacement of the floor panel 2, particularly the displacement in the vehicle front-rear direction, at the time of a side collision of the vehicle 10. The displacement of the panel 2 toward the vehicle interior can be suppressed. In particular, since the wall member 6 is provided in the vicinity of the center pillar 130 as in this example, it is easy to suppress the advance of the center pillar 130 to the inside of the vehicle, and thus it is easy to effectively suppress the displacement of the floor panel 2. .

  The location where the wall member 6 is fixed to the floor panel 2 is rearward from the front side of the overhanging portion 51 through the vehicle inner side so as to surround the front side of the overhanging portion 51, the vehicle inner side, and the rear side. An area extending to the side is mentioned. The location where the wall member 6 is fixed to the rocker 4 is located in front of the inner through-hole 43 so as to surround a region surrounding the inner through-hole 43, that is, the front, upper, and rear of the inner through-hole 43 in series. A region extending from the side through the upper side to the rear side is preferable. Then, the periphery of the inner through hole 43 can be reinforced. For fixing the wall member 6 to the floor panel 2 and the rocker 4, welding can be preferably used. For fixing the wall member 6 to the cross member 3, a fastening member such as a bolt can be preferably used in addition to welding.

  Since the wall member 6 of the present example is fixed to the floor panel 2 so as to surround the periphery of the overhanging portion 51, the water that has entered the floor panel 2 is more on the vehicle interior side than the wall member 6, that is, the wall member 6. It can be prevented from spreading from the inside to the outside. Therefore, since the invading water can be kept in the wall member 6, the water can easily flow into the drain hole 21 provided in the floor panel 2 in the wall member 6, and can be effectively drained from the drain hole 21. The intrusion of the water into the floor panel 2 occurs when water is splashed up when traveling on a bad road such as an area with a lot of rainfall or a flooded road. Specifically, as indicated by the black downward arrow in FIG. 3, the water passes through the gap between the lower end of the slide door 100 and the outer panel 4 o of the rocker 4 from the outer insertion port 57 of the box-shaped body 5. It enters into the body 5 and advances from the box-like body 5 onto the floor panel 2 through the upper surface through hole 53 of the overhanging portion 51. Alternatively, the water passes between the inner panel 4 i and the outer panel 4 o below the rocker 4, and advances on the floor panel 2 from the gap between the inner through hole 43 of the rocker 4 and the box-like body 5.

  An upper opening 61 that faces the upper surface of the overhanging portion 51 is provided on the upper surface of the wall member 6. The size of the upper opening 61 is preferably larger than the size of an electric motor 71 described later. Then, even if the wall member 6 is provided, the electric motor 71 can be easily arranged on the upper surface of the overhanging portion 51. A cover member 9 (FIG. 3), which will be described later, covering the upper side of the electric motor 71 may be fixed to the upper surface of the wall member 6. Moreover, the upper surface of the wall member 6 can also be used as an attachment location of a seat on which an occupant sits.

[Others]
(Door drive unit)
The door drive unit 7 slides the slide door 100 and includes an electric motor 71 and a slide mechanism 72 in this example. The electric motor 71 generates a driving force for sliding the slide door 100. The slide mechanism 72 is slidable with respect to the slide rail 74, a drive force transmission mechanism 73 that transmits the drive force of the electric motor 71 to the slide door 100, a slide rail 74 that guides the slide door 100 in the front-rear direction of the vehicle 10. And a roller 75. The driving force transmission mechanism 73 includes, for example, a belt, a wire, a cable, and the like. The driving force can be transmitted to the slide door 100 by the driving force transmission mechanism 73 via the support arm 101. The slide rail 74 is accommodated from the protruding portion 51 of the box-shaped body 5 to the rear of the accommodating portion 55. The roller 75 is connected to the distal end side of the support arm 101, and slides with respect to the slide rail 74 when the driving force is transmitted to the support arm 101 by the driving force transmission mechanism 73. Then, the slide door 100 slides through the support arm 101.

  The electric motor 71 and the driving force transmission mechanism 73 are separate in this example, but may be an integral assembly. If the electric motor 71 and the driving force transmission mechanism 73 are separated as in this example, the driving force transmission mechanism 73 can be easily housed in the box-shaped body 5. This is because the driving force transmission mechanism 73 can be housed in the box-like body 5 from the outside of the vehicle where a large space can be taken if it is a separate body. If the electric motor 71 and the driving force transmission mechanism 73 are formed as an integral assembly, the electric motor 71 is relatively large, so that it cannot be stored in the box-like body 5 from the outside of the vehicle and needs to be arranged from the inside of the vehicle where the space is small. Since the driving force transmission mechanism 73 is relatively long, it is very complicated to store the driving force transmission mechanism 73 in the box-shaped body 5 from the inside of the vehicle having a small space. When the electric motor 71 and the driving force transmission mechanism 73 are separate bodies, the electric motor 71 is arranged on the upper surface of the overhanging portion 51 of the box-like body 5 from the inside of the vehicle and is stretched through the upper surface through hole 53 of the overhanging portion 51. It can be connected to the driving force transmission mechanism 73 in the outlet 51. Since the electric motor 71 is separate from the driving force transmission mechanism 73, the size and type of the electric motor 71 can be easily changed. The electric motor 71 of this example is disposed on the upper surface of the overhanging portion 51 via a bracket 8 described later.

(bracket)
The bracket 8 arrange | positions the electric motor 71 on the upper surface of the overhang | projection part 51 (FIG. 3). The bracket 8 is interposed between the lower surface of the electric motor 71 and the upper surface of the overhang portion 51, and is fixed to both the electric motor 71 and the overhang portion 51. The bracket 8 is composed of a plate member. Fastening members such as bolts can be used to fix the electric motor 71 and the overhanging portion 51 to the bracket 8. When the electric motor 71 and the driving force transmission mechanism 73 are connected separately, if the electric motor 71 and the bracket 8 are fixed in advance, the connection of the electric motor 71 to the driving force transmission mechanism 73 is performed by connecting the bracket 8 to the overhanging portion. This can be easily done by fixing to the upper surface of 51.

  The bracket 8 of this example covers the upper opening 61 of the wall member 6 (FIGS. 2 and 3). Thereby, it can prevent that water advances from the upper opening part 61 of the wall member 6 to the outer side (vehicle inside) of the wall member 6. FIG. Even if the water that has entered the floor panel 2 in the wall member 6 is splashed up as shown by the black upward arrow in FIG. This is because it can be dropped into the wall member 6 and water can be prevented from jumping out of the wall member 6 from the upper opening 61 (inside the vehicle). In addition, even if the water that has entered the box-like body 5 through the outer insertion port 57 of the box-like body 5 jumps and jumps out of the box-like body 5 through the upper surface through hole 53 of the box-like body 5, This is because the water can be dropped into the wall member 6 at the lower surface of the bracket 8, and the water can be prevented from jumping out of the wall member 6 (inside the vehicle) from the upper opening 61.

  As for the shape of the bracket 8, the shape along the outline shape of the upper opening part 61 is mentioned. The size of the bracket 8 can prevent the water jumping out of the box-shaped body 5 from moving out to the outside of the wall member 6 as the region covering the upper opening 61 is larger. The size of the bracket 8 may be such that it covers almost the entire area of the upper opening 61 as in this example, or may be such that a gap is formed between the upper opening 61 and the bracket 8. A seal member 80 (shown by a two-dot chain line) such as packing may be separately arranged in the gap between the bracket 8 and the upper opening 61.

(Cover member)
The cover member 9 covers the upper side of the electric motor 71 (FIG. 2, two-dot chain line, FIG. 3). By providing the cover member 9, it is possible to prevent an occupant from stepping on the electric motor 71. In addition, when the occupant spills water, the water can be prevented from splashing on the electric motor 71. The cover member 9 is fixed to the cross member 3 (FIG. 2) and the upper surface of the wall member 6 across the electric motor 71. The size of the cover member 9 is preferably a size that covers the entire upper surface of the electric motor 71.

[Function and effect]
The vehicle structure 1 according to the first embodiment can suppress the displacement of the floor panel 2 of the vehicle 10 at the time of a side collision of the vehicle 10. Even if the rocker 4 is formed with the inner through-hole 43 for projecting the projecting portion 51 to the inside of the vehicle, the wall member 6 is provided so that the wall member 6 is displaced by the floor panel 2 at the time of a side collision. This is because the displacement of the floor panel 2 toward the vehicle interior can be particularly suppressed by suppressing the displacement in the vehicle longitudinal direction. Since the displacement of the floor panel 2 can be suppressed only by providing the wall member 6, it is difficult to increase the weight and cost, and the productivity is excellent.

  The present invention is not limited to these exemplifications, is shown by the scope of the claims, and is intended to include all modifications within the meaning and scope equivalent to the scope of the claims.

DESCRIPTION OF SYMBOLS 1 Vehicle structure 2 Floor panel 21 Drain hole 3 Cross member 4 Rocker 4i Inner panel 4o Outer panel 41 Main body part 42 Outer opening part 43 Inner through-hole 5 Box-shaped body 5u Upper board 5d Lower board 51 Overhang part 53 Upper surface through-hole 55 Storage Portion 57 Outer insertion port 6 Wall member 61 Upper opening 7 Door drive unit 71 Electric motor 72 Slide mechanism 73 Driving force transmission mechanism 74 Slide rail 75 Roller 8 Bracket 80 Seal member 9 Cover member 10 Vehicle 100 Slide door 101 Support arm 110 Door opening 120 Side member 130 Center pillar

Claims (1)

A vehicle structure including a sliding door that is slidable forward and backward of the vehicle on a side of the vehicle,
A floor panel forming a lower surface of the vehicle;
A cylindrical rocker that is fixed to the floor panel along the front-rear direction of the vehicle and has an inner through hole formed inside the vehicle;
A cross member extending in the vehicle width direction and fixed to the floor panel and the rocker;
A projecting portion projecting from the inner through-hole to the vehicle interior; and a housing portion that is housed in the rocker and forms a housing space that communicates with the internal space of the projecting portion, and slides the slide door. A box-shaped body that houses the slide mechanism from the overhanging portion to the rear of the housing portion;
A vehicle structure comprising a wall member fixed to the floor panel, the rocker, and the cross member so as to surround the periphery of the projecting portion.

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