JP7022485B2 - Vehicle structure - Google Patents

Description

The present invention relates to a vehicle structure in which a sliding door that can be slidable in the front and rear of the vehicle is provided on the side of the vehicle. In particular, the present invention relates to a vehicle structure capable of suppressing displacement of the floor panel forming the lower surface of the vehicle in the event of a side collision of the vehicle.

As a vehicle structure in which a sliding door that can be slidable in the front and rear of the vehicle is provided on the side of the vehicle, a vehicle provided with the sliding door device of the vehicle of Patent Document 1 is known. A vehicle equipped with this slide device has a floor panel, a rocker, a cross member, a box-shaped 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 bottom of the side wall of the vehicle body to form the lower edge of the door opening. This rocker has a hollow closed cross-sectional 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 (inner surface of the car) 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 (outer opening) is formed. The cross member extends in the width direction of the vehicle body and is joined to the floor panel and the rocker. The box-shaped support houses a part of the door drive unit inside, and extends in the front-rear direction and is stored in the rocker (storage part) and extends from the through hole of the rocker to the inside of the vehicle. It has one end (overhanging part). The portion housed in the rocker is connected to the edge of the opening of the rocker to form an opening (outer 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 one end. The door drive unit has a drive unit main body portion and a drive force transmission portion. 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-shaped support to the rear of the vehicle in the portion housed in the rocker, transmits the driving force of the motor to the slide door, and slides the slide door back and forth.

Japanese Unexamined Patent Publication No. 2013-226874

The inner surface of the rocker has an inner through hole for projecting the overhanging part of the box-shaped support to the inside of the car, which reduces the rigidity of the rocker, so that the floor panel can be used in a side collision. It becomes easy to be displaced.

One of an object of the present invention is to provide a vehicle structure capable of suppressing the displacement of the floor panel forming the lower surface of the vehicle at the time of a side collision of the vehicle.

The vehicle structure according to one aspect of the present invention is
It is a vehicle structure in which a sliding door that can slide forward and backward of the vehicle is provided on the side of the vehicle.
The floor panel forming the lower surface of the vehicle and
A cylindrical rocker fixed to the floor panel along the front-rear direction of the vehicle and having an inner through hole formed inside the vehicle.
A cross member that extends in the vehicle width direction and is fixed to the floor panel and the rocker,
It has an overhanging portion that projects from the inner through hole to the inside of the vehicle and a storage portion that is stored in the rocker and forms a storage space that communicates with the internal space of the overhanging portion, and slides the sliding door. A box-shaped body that stores the slide mechanism from the overhanging portion to the rear of the storage portion, and
The floor panel, the rocker, and the wall member fixed to the cross member are provided so as to surround the periphery of the overhanging portion.

The vehicle structure can suppress the displacement of the floor panel forming the lower surface of the vehicle at the time of a side collision of the vehicle. Even if an inner through hole is formed on the side surface of the rocker to extend the overhanging portion to the inside of the vehicle, by providing the wall member, the wall member is displaced on the floor panel during a side collision, especially in the front-rear direction of the vehicle. This is because the displacement of the floor panel to the inside of the vehicle can be suppressed by suppressing the displacement to the vehicle.

It is a side view of the vehicle which comprises the vehicle structure which concerns on Embodiment 1. FIG. It is a perspective view which shows the outline of the vehicle structure which concerns on Embodiment 1. FIG. It is sectional drawing which shows the outline of the vehicle structure cut 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. 1 to 3. The same reference numerals in the figure indicate the same names. In the figure, "UP" indicates above the vehicle, "LWR" indicates below, "RH" indicates the right side, "LH" indicates the left side, "FR" indicates the front, and "RR" indicates the rear.

<< Embodiment 1 >>
[Vehicle structure]
The vehicle structure 1 according to the first embodiment is provided with a slide door 100 slidable in the front-rear direction of the vehicle 10 on the side of the vehicle 10 (FIG. 1). The slide door 100 is a power slide door provided at the rear of the vehicle 10 and slid electrically. The vehicle structure 1 includes a floor panel 2, a cross member 3 extending in the vehicle width direction, a rocker 4 having an inner through hole 43 fixed to the floor panel 2 and formed inside the vehicle 10, and an inner penetration of the rocker 4. A box-shaped body 5 having an overhanging portion 51 projecting from the hole 43 to the inside of the vehicle is provided. One of the features of the vehicle structure 1 is that it includes a floor panel 2, a rocker 4, and a wall member 6 fixed to the cross member 3 so as to surround the periphery of the overhanging 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 composed of, for example , a steel plate formed into a predetermined shape. The floor panel 2 of this example is provided with a drainage hole 21 (FIG. 3). The drainage hole 21 is a hole for draining 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 that penetrates the upper and lower surfaces of the floor panel 2. The number of drain holes 21 may be singular or plural. The drainage hole 21 may be formed on the floor panel 2 inside the wall member 6 or on the floor panel 2 outside the wall member 6. In this example, the location where at least one drainage hole 21 is formed is the floor panel 2 in the wall member 6. More specifically, the drainage hole 21 is formed on the outside of the vehicle (on the rocker 4 side) of the side member 120 in the floor panel 2 in the wall member 6. As a result, although the detailed intrusion route will be described later, the water invading from the gap (FIG. 3) between the inner through hole 43 of the rocker 4 and the box-shaped body 5 can be discharged without advancing to the inside of the vehicle as much as possible.

[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 made of a plate material in this example. The floor panel 2, the rocker 4, and the wall member 6 are fixed to the cross member 3. The location of the cross member 3 is near the center pillar 130 in this example, and is on the front side of the inner through hole 43 described later. The location of the cross member 3 may be 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.

[Rocka]
The rocker 4 forms the lower edge of the door opening 110 on the side of the vehicle 10 (FIGS. 1 to 3). The rocker 4 has a long main body portion 41 fixed to the floor panel 2 along the front-rear direction of the vehicle 10 between the inside of the lower end portion of the slide 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 accommodating the box-shaped body 5 from the outside of the vehicle 10 into the main body 41 (inside the rocker 4) (FIG. 3). The outer opening 42 is provided in the outer panel 4o 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 substantially the entire length of the lower edge of the door opening 110 (FIG. 1).

The inner through hole 43 is a hole for inserting the overhanging portion 51 of the box-shaped body 5 so as to project into the inside of the vehicle (FIGS. 2 and 3). The inner through hole 43 is formed so as to open above the floor panel 2 in the inner panel 4i of the main body 41. The shape of the inner through hole 43 is rectangular, and its size is about one size larger than that of the overhanging portion 51.

[Box]
The box-shaped 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-shaped body 5 is formed by joining the upper plate 5u and the lower plate 5d in a hollow cylindrical shape, and is formed by joining the storage portion 55 housed in the rocker 4 and the inside of the vehicle through the inner through hole 43 of the rocker 4. It has an overhanging portion 51 overhanging. The slide mechanism 72 is housed from the overhanging part 51 to the rear side of the storage part 55 (right side of the paper in FIG. 2, front side of the paper in FIG. 3).

The storage portion 55 forms a storage space in the rocker 4 that communicates with the internal space of the overhanging portion 51 (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. On the outside of the vehicle of the storage portion 55, there is an outer insertion port 57 that opens so as to overlap the outer opening 42 of the rocker 4. The opening edge of the outer insertion port 57 is joined to the opening edge of the outer opening 42 of the rocker 4 in this example. The outer insertion port 57 inserts the support arm 101, which is connected to the inside of the lower end portion of the slide door 100 and supports the slide door 100, into the box-shaped body 5.

The overhanging portion 51 projects 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 a series on the front side and the inside of the vehicle 10 in the storage portion 55 so that the internal space thereof communicates with the storage space of the storage portion 55. The overhanging portion 51 of this example is substantially floating in the air and forms a space between the overhanging portion 51 and the floor panel 2. An upper surface through hole 53 for connecting the electric motor 71 provided in the door drive unit 7, which will be described later, to the slide mechanism 72 in the overhanging portion 51 is formed on the upper surface (upper plate 5u) of the overhanging portion 51.

[Wall member]
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, the wall member 6 can suppress the displacement of the floor panel 2, particularly the displacement in the front-rear direction of the vehicle at the time of a side collision of the vehicle 10, so that the floor can be suppressed. The displacement of the panel 2 to the inside of the vehicle can be suppressed. In particular, since the wall member 6 is provided near 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, so that it is easy to effectively suppress the displacement of the floor panel 2. ..

The fixing point of the wall member 6 to the floor panel 2 is rearward from the front side of the overhanging portion 51 through the inside of the vehicle so as to surround the front side, the inside of the vehicle, and the rear side of the overhanging portion 51 in a series. Areas spanning the sides are mentioned. The fixing point of the wall member 6 to the rocker 4 is an area in front of the inner through hole 43 so as to surround the area surrounding the inner through hole 43, that is, the front, the upper side, and the rear of the inner through hole 43 in a series. A region extending from the side through the upper side to the rear side is preferable. Then, the circumference of the inner through hole 43 can be reinforced. Welding can be preferably used for fixing the wall member 6 to the floor panel 2 and the rocker 4, and a tightening member such as a bolt can be preferably used for fixing the wall member 6 to the cross member 3.

Since the wall member 6 of this example is fixed to the floor panel 2 so as to surround the periphery of the overhanging portion 51, water that has entered the floor panel 2 is inside the vehicle rather than the wall member 6, that is, at the wall member 6. It is possible to prevent it from spreading from the inside to the outside. Therefore, since the invading water can be retained in the wall member 6, the water easily flows 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. Invasion of water into the floor panel 2 occurs when water is splashed up when traveling on a rough road such as an area with a large amount of rainfall or a submerged canal. Specifically, as shown by the black-painted downward arrow in FIG. 3, water passes through the gap between the lower end of the slide door 100 and the outer panel 4o of the rocker 4 and is box-shaped from the outer insertion port 57 of the box-shaped body 5. It invades the inside of the body 5 and advances from the inside of the box-shaped body 5 onto the floor panel 2 through the upper surface through hole 53 of the overhanging portion 51. Alternatively, water passes between the inner panel 4i and the outer panel 4o below the rocker 4 and advances onto the floor panel 2 through the gap between the inner through hole 43 of the rocker 4 and the box-shaped body 5.

An upper opening 61 facing 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 the 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, may be fixed to the upper surface of the wall member 6 to cover the upper part of the motor 71. Further, the upper surface of the wall member 6 can also be used as a mounting place for a seat on which an occupant sits.

[others]
(Door drive unit)
The door drive unit 7 slides the slide door 100, and in this example, it has an electric motor 71 and a slide mechanism 72. The electric motor 71 generates a driving force for sliding the slide door 100. The slide mechanism 72 is slidable with respect to a driving force transmission mechanism 73 that transmits the driving 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 slide rail 74. It has a roller 75 and. The driving force transmission mechanism 73 includes, for example, a belt, a wire, a cable, and the like. The driving force is transmitted to the slide door 100 by the driving force transmission mechanism 73 via the support arm 101. The slide rail 74 is stored from the overhanging portion 51 of the box-shaped body 5 to the rear of the storage portion 55. The roller 75 is connected to the tip 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.

Although the electric motor 71 and the driving force transmission mechanism 73 are separate bodies in this example, they may be integrally assembled. 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 stored in the box-shaped body 5. This is because if it is a separate body, the driving force transmission mechanism 73 can be stored in the box-shaped body 5 from the outside of the vehicle where a large peripheral space can be taken. If the motor 71 and the driving force transmission mechanism 73 are integrally assembled, the motor 71 cannot be stored in the box-shaped body 5 from the outside of the vehicle because the motor 71 is relatively large, and it is necessary to arrange the motor 71 from the inside of the vehicle where the space is narrow. Since the driving force transmission mechanism 73 is relatively long, it tends to be very complicated to store it in the box-shaped body 5 from the inside of the vehicle where the space is narrow. When the electric motor 71 and the driving force transmission mechanism 73 are separate bodies, the electric motor 71 is arranged from the inside of the vehicle on the upper surface of the overhanging portion 51 of the box-shaped body 5 and 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 protrusion 51. Since the electric motor 71 is separate from the driving force transmission mechanism 73, its size and type can be easily changed. The electric motor 71 of this example is arranged on the upper surface of the overhanging portion 51 via a bracket 8 described later.

(bracket)
The bracket 8 arranges the motor 71 on the upper surface of the overhanging portion 51 (FIG. 3). The bracket 8 is interposed between the lower surface of the electric motor 71 and the upper surface of the overhanging portion 51, and is fixed to both the electric motor 71 and the overhanging portion 51. The bracket 8 is made of a plate-shaped member. A tightening member such as a bolt can be used to fix the motor 71 and the overhanging portion 51 to the bracket 8. When connecting the separate electric motor 71 and the driving force transmission mechanism 73, if the electric motor 71 and the bracket 8 are fixed in advance, the bracket 8 is extended to connect the electric motor 71 to the driving force transmission mechanism 73. It can be easily done by fixing it 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 is possible to prevent water from advancing from the upper opening 61 of the wall member 6 to the outside (inside the vehicle) of the wall member 6. Even if water that has entered the floor panel 2 in the wall member 6 is splashed up by vibration during traveling of the vehicle 10 as shown by the black-painted upward arrow in FIG. 3, the water is splashed on the lower surface of the bracket 8. 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 (inside the vehicle) from the upper opening 61. Further, even if the water that has entered the box-shaped body 5 through the outer insertion port 57 of the box-shaped body 5 splashes and jumps out of the box-shaped body 5 through the upper surface through hole 53 of the box-shaped body 5. This is because the water can be dropped into the wall member 6 on 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 the shape of the bracket 8, the shape along the contour shape of the upper opening 61 can be mentioned. As for the size of the bracket 8, the larger the area covering the upper opening 61, the more water that can be prevented from flowing out of the box-shaped body 5 can be prevented from advancing to the outside of the wall member 6. The size of the bracket 8 may be such that it covers substantially the entire area of the upper opening 61 as in this example, or may be such that a gap is formed between the bracket 8 and the upper opening 61. A sealing member 80 (indicated 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 part of the motor 71 (two-dot chain line in FIG. 2, FIG. 3). By providing the cover member 9, it is possible to prevent the occupant from stepping on the electric motor 71. Moreover, when the occupant spills water, it is possible to prevent the water from splashing on the motor 71. The cover member 9 straddles the upper part of the electric motor 71 and is fixed to the cross member 3 (FIG. 2) and the upper surface of the wall member 6. The size of the cover member 9 is preferably a size that covers the entire upper surface of the electric motor 71.

[Action 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 an inner through hole 43 for projecting the overhanging portion 51 to the inside of the vehicle, by providing the wall member 6, the wall member 6 is displaced from the floor panel 2 at the time of a side collision. In particular, since the displacement in the front-rear direction of the vehicle can be suppressed, the displacement of the floor panel 2 to the inside of the vehicle can be suppressed. 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 examples, but is shown by the scope of claims and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

1 Vehicle structure 2 Floor panel 21 Drain hole 3 Cross member 4 Rocker 4i Inner panel 4o Outer panel 41 Main body 42 Outer opening 43 Inner through hole 5 Box-shaped body 5u Upper plate 5d Lower plate 51 Overhanging part 53 Top through hole 55 Storage Part 57 Outer insertion port 6 Wall member 61 Upper opening 7 Door drive unit 71 Motor 72 Slide mechanism 73 Drive 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)

It is a vehicle structure in which a sliding door that can slide forward and backward of the vehicle is provided on the side of the vehicle.
The floor panel forming the lower surface of the vehicle and
A cylindrical rocker fixed to the floor panel along the front-rear direction of the vehicle and having an inner through hole formed inside the vehicle.
A cross member that extends in the vehicle width direction and is fixed to the floor panel and the rocker,
It has an overhanging portion that projects from the inner through hole to the inside of the vehicle and a storage portion that is stored in the rocker and forms a storage space that communicates with the internal space of the overhanging portion, and slides the sliding door. A box-shaped body that stores the slide mechanism from the overhanging portion to the rear of the storage portion, and
A wall member fixed to the floor panel, the rocker, and the cross member so as to surround the periphery of the overhanging portion is provided .
The inner through hole is provided in the vicinity of the corner portion with the cross member in the rocker.
The wall member has a portion that covers the vicinity of the corner portion including the inner through hole from above.
The rocker, the cross member, and the wall member form a closed cross section that intersects the vehicle in the vertical direction in the vicinity of the corner portion.
Vehicle structure.

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