JP7240074B2 - vehicle rear structure - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle rear structure having a slope device at the rear of the vehicle.

2. Description of the Related Art There are vehicles equipped with a slope device that is used for getting on and off a passenger sitting in a wheelchair (for example, Patent Literature 1). The slope device is typically provided at the rear of the vehicle, and is deployed outside the vehicle from an opening at the rear of the vehicle with the back door opened, and spans between the opening and the ground. .

Patent Literature 1 discloses a rotary slope device that can slide in the longitudinal direction of a vehicle. The slope device and the lower portion (decorative panel) of the back door have a downward-opening structure that is integrally rotated by the main hinge mechanism. This ramp device is utilized as follows. First, open the top-opening upper part of the back door. Next, the slope device and the lower portion are rotated downward to deploy the slope device outside the vehicle. After that, pull out the movable plate of the slope device. The end of the pulled-out movable plate is brought into contact with the ground (Figs. 2 and 9 of Patent Document 1).

JP 2013-141856 A

In a vehicle equipped with the rotating slope device described above, it is desired that the load can be stably supported even when an excessive load is applied to the slope device.

For example, when the slope device has the slidable structure described above, the usage state of the slope device is a state in which the movable plate is not fully pulled out and overlapped with the fixed plate (hereinafter referred to as an irregular state). Conceivable. In the irregular state, compared to the state in which the movable plate is properly pulled out (hereinafter referred to as the regular state), the slope length is shorter and the end of the movable plate may be separated from the ground. It is conceivable that a load exceeding a presumed predetermined value is applied to the slope device, such as by forcibly pressing the slope device downward in order to bring the end of the movable plate into contact with the ground. In this case, it is conceivable that the slope device cannot stably support the load. In addition, it is conceivable that a load exceeding a presumed predetermined value is applied to the pivoting member such as the main hinge mechanism due to the above-described pressing or the like, causing deformation, and this deformation destabilizes the support state of the slope device.

Furthermore, in the irregular state, the distance _h2 to the ground at the lower portion of the back door is smaller than the distance _h1 in the regular state (see FIG. 3 described later). Therefore, the design surface of the lower portion may be scratched by rubbing against the ground or, in the worst case, cracked. It is desirable to be able to prevent damage to the constituent members such as deformation and rubbing as described above.

Even in the above-mentioned regular state, if a load exceeding the assumed set value is applied to the slope device, the excessive load will be applied to the rotating member as described above, or the structural members will be damaged. can be considered.

SUMMARY OF THE INVENTION Accordingly, one object of the present invention is to provide a vehicle rear portion structure that can stably support a load applied to a slope device.

A vehicle rear portion structure according to an aspect of the present invention includes:
a back door that opens and closes an opening provided at the rear of the vehicle;
A vehicle rear portion structure comprising a rotating slope device that spans between the opening and the ground when the back door is open,
The backdoor is
an upper part that opens and closes the upper part of the opening;
a lower opening type lower part that opens and closes the lower part of the opening,
The lower part has a protrusion on the design surface on the vehicle outer side,
The projecting portion contacts the ground together with the rear end portion of the slope device when a load exceeding a predetermined value is applied to the slope device that spans between the opening and the ground.

In the vehicle rear portion structure described above, when a load exceeding a predetermined value is applied to the slope device, the protrusion of the lower portion and the rear end portion of the slope device come into contact with the ground. Since the load can be supported at a plurality of points of the protrusion of the lower portion and the rear end of the slope device, the vehicle rear structure can stably support the load applied to the slope device.

In addition, the contact of the projection with the ground reduces the load applied to the rotating member such as the slope device, and prevents the design surface of the lower portion from rubbing against the ground. Therefore, the vehicle rear portion structure described above can effectively suppress damage to the constituent members.

FIG. 2 is a schematic perspective view showing a state in which an upper portion of a back door is opened in the vehicle rear portion structure according to Embodiment 1; FIG. 4 is a schematic side view showing a case where the slope device is used in a regular state in the vehicle rear portion structure according to the first embodiment; FIG. 4 is a schematic side view showing a case where the slope device is used in an irregular state in the vehicle rear portion structure according to the first embodiment;

Hereinafter, the vehicle rear portion structure of the present invention will be specifically described with reference to the drawings.
In the figure, the same reference numerals denote the same name.
In the figure, "FR" is the front of the vehicle, "RR" is the rear of the vehicle, "UP" is the top of the vehicle, "LWR" is the bottom of the vehicle, "RH" is the right side of the vehicle, and "LH" is the top of the vehicle. Point to the left. Hereafter, they may simply be referred to as forward, backward, upward, downward, rightward, and leftward.

[Embodiment 1]
A vehicle rear portion structure 1 according to Embodiment 1 will be described with reference to FIGS. 1 to 3. FIG.
2 and 3 are side views of the rear region of the vehicle 100 including the vehicle rear structure 1 as seen from the left in the vehicle width direction. The vehicle width direction is the left-right direction of the vehicle 100 .

(overview)
The vehicle rear portion structure 1 of Embodiment 1 is used in a vehicle 100 having a back door 2 and a rotating slope device 3 . By rotating the back door 2 in an open state, the slope device 3 is deployed outside the vehicle from an opening 101 at the rear of the vehicle 100 and bridged between the opening 101 and the ground G (Fig. 2). The slope device 3 is typically used when an occupant (not shown) sitting in a wheelchair W gets on and off in a seated state. Such a vehicle 100 is called a welfare vehicle.

In particular, the vehicle rear portion structure 1 of Embodiment 1 has a structure capable of stably supporting the load even when an excessive load is applied when the slope device 3 is used. As one of the configurations, the lower portion 22 of the back door 2 has the projecting portion 4 on the exterior design surface 20 of the vehicle.
Hereinafter, the outline of the vehicle 100, the back door 2, the slope device 3, and the protrusion 4 will be described in order.

(vehicle)
The vehicle 100 of this example is a one-box vehicle. An opening 101 is provided at the rear of the vehicle body of the vehicle 100 . The back door 2 opens and closes this opening 101 .

A rear area near the back door 2 in the vehicle compartment of the vehicle 100 is used as a storage/storage space. Specifically, the slope device 3 when not in use (see the two-dot chain line in FIG. 2) and other luggage (not shown) are stored, and the occupant sitting on the wheelchair W is stored.

A cross member is provided along the width direction of the vehicle on the floor 102 of the vehicle compartment. In this example, a member (rotating portion 23) that rotates the lower portion 22 of the back door 2 and the slope device 3 is attached to the end cross member 103 arranged at the rear end of the floor 102 (Fig. 2).

(back door)
The back door 2 has a vertically divided structure, and includes an upper portion 21 and a lower portion 22 .

The upper part 21 opens and closes the upper part of the opening 101 . The upper part 21 of this example is a top-opening door having a size capable of opening and closing most of the opening 101 (FIG. 1). Note that the upper portion 21 may be a side-opening door. The side-opening type door may be either a single-opening type or a double-opening type.

The lower part 22 is a downward-opening door that opens and closes the lower part of the opening 101 . In this example, the rotating portion 23 of the lower portion 22 is provided on the end cross member 103 positioned on the lower end side of the opening 101 in the vehicle body (FIG. 2). A known hinge mechanism or the like can be used for the rotating portion 23 .

In this example, part of the slope device 3 is fixed to the lower portion 22 . Specifically, the lower portion 22 and a part of the slope device 3 are arranged so that the lower portion 22 is positioned below the slope device 3 when the slope device 3 is deployed outside the vehicle (hereinafter referred to as a deployed state). are superimposed (Figs. 2 and 3). Therefore, the rotating portion 23 of this example rotates the lower portion 22 and the slope device 3 integrally.

In this example, the exterior design surface 20 of the lower portion 22 includes a rear end surface facing rearward when the lower portion 22 is closed (lower end surface in the unfolded state), an upper surface facing upward, and a rear end surface. It has corners 220 with the top surface (FIG. 2). The lower portion 22 of this example has the protrusions 4 at the corners 220 .

(Slope device)
Hereinafter, the slope device 3 will be described mainly with reference to FIGS. 2 and 3. FIG.
The slope device 3 is pivotal as described above. The slope device 3 of this example is configured to be rotatable together with the lower portion 22 of the back door 2 by the rotating portion 23 as described above. Moreover, the slope device 3 of this example has a slidable structure. Specifically, the slope device 3 is a two-step slope and includes a fixed plate portion 31 and a movable plate portion 32 . The fixed plate portion 31 and the movable plate portion 32 constitute a slope body.

<Fixed plate>
In this example, the fixed plate portion 31 has one end region (the front region in the unfolded state) overlapped with the lower portion 22 and fixed thereto. This one end region is positioned above the lower portion 22 in the unfolded state.

The fixed plate portion 31 of the present example has a leg portion 36 at the other end portion (the rear end portion in the unfolded state). The leg portion 36 is provided so as to protrude toward the ground G from a surface (lower surface) of the fixed plate portion 31 facing the ground G in the unfolded state.

<Movable plate>
The movable plate portion 32 is provided slidably in the front-rear direction of the vehicle 100 in the unfolded state. One end of the movable plate portion 32 (the front end in the unfolded state) is superimposed on the fixed plate portion 31 and supported by the fixed plate portion 31 .

The movable plate portion 32 has a leg portion 35 at the other end portion (the rear end portion in the unfolded state). The leg portion 35 is normally brought into contact with the ground G when the slope device 3 is used, and is used as a support point for the ground G.

In addition, the movable plate portion 32 of this example has a handle 38 at the other end. The handle 38 is used when the movable plate portion 32 is rotated, pulled out, or returned.

<Flapper>
The slope device 3 of this example further includes a flapper 33 . The flapper 33 covers the gap between the vehicle body and the lower portion 22 of the back door 2 in the unfolded state. The fixed plate portion 31 is connected to the end portion of the flapper 33 . The flapper 33 of this example is provided so as to be movable in the front-rear direction and partially bendable.

As for the basic configuration, materials, etc. of the rotating portion 23 of the back door 2 and the slope device 3 and the slide structure of the slope device 3, known configurations, materials, and the like can be referred to.

(protrusion)
When a load exceeding a predetermined value is applied to the slope device 3 that spans between the opening 101 and the ground G, the protrusion 4 is formed at the rear end of the slope device 3 (here, the leg 35 or 36). ), the height of the projection and the formation position are adjusted so as to be in contact with the ground G. Such protrusions 4 are used as support points on the ground G together with the rear end of the slope device 3 when a load exceeding a predetermined value is applied when the slope device 3 is in use. Moreover, it can be said that such a protrusion 4 constitutes the lowest portion of the lower portion 22 when the slope device 3 is in use. The projection height of the projecting portion 4 is the distance from the design surface 20 (here, the rear end surface described above) of the lower portion 22 to the lowest point in the unfolded state.

The specifications of the projecting portion 4 of this example are as follows. The specifications of the projecting portion 4 can be changed as appropriate within a range in which the projecting portion 4 contacts the ground G when a load exceeding a predetermined value is applied (see modified examples described later).
(1) The projecting portion 4 is a single ridge continuous in the vehicle width direction. The projecting portion 4 is a filamentous body that is sufficiently thinner than the vertical dimension of the lower portion 22 when the lower portion 22 is closed (FIG. 1).
(2) The length of the protrusion 4 along the vehicle width direction is substantially equal to the length of the lower portion 22 along the vehicle width direction (FIG. 1).
(3) The projecting portion 4 is provided on the upper end side of the lower portion 22 (FIG. 1). Moreover, the projecting portion 4 is provided so as to project downward from the corner portion 220 in the deployed state of the slope device 3 (FIG. 2).
(4) The projecting portion 4 is a member independent of the lower portion 22 and is attachable to and detachable from the lower portion 22 .
(5) The protrusion 4 is a resin molding.

Next, the unused state and the used state of the slope device 3 will be described in order.
(Not in use)
When the slope device 3 is not used, the fixed plate portion 31 and the movable plate portion 32 are superimposed on each other and stored near the back door 2 in the passenger compartment in a state of being erected with respect to the floor 102 (see FIG. 2). (See double-dotted line). In this example, a part of the flapper 33 is bent into a center-folded shape to construct the standing state described above.

(use condition)
Of the usage states, the regular state will be described mainly with reference to FIG. A description of the irregular state will be made mainly with reference to FIG.

<Regular state>
When using the slope device 3, first, the upper part 21 of the back door 2 is opened (Fig. 1).
Next, the lock mechanism (not shown) is released to make the lower portion 22 of the back door 2 rotatable.
Next, the lower portion 22 and the slope device 3 are rotated. Also, the movable plate portion 32 is pulled out to a predetermined length. In this example, the movable plate portion 32 is pulled out by pulling the handle 38 while pulling the handle 38 and tilting the free end of the slope device 3 (upper end in the chain double-dashed line in FIG. 2) downward.
The rear end portion of the slope device 3, here, the leg portion 35 provided at the rear end portion of the pulled-out movable plate portion 32 is brought into contact with the ground G.
As a result, a slope is provided in which the flapper 33, the fixed plate portion 31, and the movable plate portion 32 are arranged in order from the lower end of the opening 101 at the rear of the vehicle toward the ground G.

This slope has an inclination angle of θ ₁ with respect to the ground G. Also, the distance between the design surface 20 of the lower portion 22 and the ground G on this slope is _h1 . The inclination angle θ ₁ and the distance h ₁ are usually set so that the design surface 20 does not come into contact with the ground G when the load applied to the slope is within the assumed predetermined value.

<Irregular state>
Next, a case where the slope device 3 is used with the fixed plate portion 31 and the movable plate portion 32 overlapped without the movable plate portion 32 being pulled out sufficiently will be described.
In this case, the inclination angle θ ₂ with respect to the ground G is larger than the inclination angle θ ₁ (Fig. 2) in the regular state (θ ₁ < θ ₂ ), and the distance h ₂ is smaller than the distance h ₁ in the regular state (h ₂ < h ₁ ), a slope is constructed such that the slope length is shorter than in the regular state. In this slope, the rear end of the slope device 3 (legs 35 in this case) sometimes separates from the ground G, and the wheelchair W or the like pushes down the slope device 3 further to bring the rear end into contact with the ground G. can be considered. In this case, it is conceivable that a load exceeding a presumed predetermined value is applied to the slope device 3 . A two-dot chain line in FIG. 3 virtually shows a state in which a load exceeding the predetermined value is applied and the slope device 3 is bent. In order to explain the distance _h1 in the regular state, FIG. 3 virtually shows only a part of the protrusion 4 above the protrusion 4 indicated by the solid line with a chain double-dashed line. 3 shows the slope device 3 in an enlarged manner as compared with FIG.

(main action)
In the vehicle rear portion structure 1 of Embodiment 1, when a load exceeding the predetermined value is applied to the slope device 3, the slope body is pushed down and the rear end portion of the slope device 3 (here, the leg portion 35 or 36), the protrusion 4 comes into contact with the ground G. Therefore, the load can be supported at two points, the rear end portion and the projection portion 4 .

Even in the regular state, when a load exceeding the above-described predetermined value is applied to the slope device 3, the slope body is pushed downward so that the protrusion 4 contacts the ground G. Therefore, in this case as well, the load can be supported at two points, the rear end portion of the slope device 3 and the projection portion 4 .

(main effect)
The vehicle rear portion structure 1 of Embodiment 1 can support the load at a plurality of points when a load exceeding a predetermined value is applied to the slope device 3 bridged between the opening 101 and the ground G. Therefore, the vehicle rear portion structure 1 can stably support the load applied to the slope device 3 .

In addition, in the above-described support state at a plurality of points, the load applied to the rotating portion 23 and the slope body tends to be small. Therefore, it is possible to prevent deformation of the rotating portion 23 and the slope main body due to a load exceeding the predetermined value. From this point as well, the vehicle rear portion structure 1 can stably support the load applied to the slope device 3 .

Further, the protrusions 4 of the lower portion 22 contact the ground G, thereby preventing the design surface 20 from rubbing against the ground G and being scratched or cracked. In particular, when an excessive load is applied in the irregular state or in the regular state, the distance from the design surface 20 of the lower portion 22 to the ground G is within the above-mentioned predetermined value (appropriate load). shorter than state. However, even in these cases, the protrusions 4 are arranged closer to the ground G than the design surface 20 is. Therefore, damage to the design surface 20 and, in turn, damage to the lower portion 22 are effectively prevented. Further, even if the lower portion 22 is inadvertently rotated when the ground G is locally raised, the projection 4 is more likely to come into contact with the raised portion of the ground G than the design surface 20. Damage to the surface 20 or the like is prevented.

Furthermore, the vehicle rear part structure 1 of this example also has the following effects.
(A) The number of protrusions 4 is one. Therefore, mounting and replacement of the protrusion 4 are easy. Also, the number of parts is small.
(B) The projecting portion 4 is provided over the entire width of the lower portion 22 . Therefore, the projecting portion 4 can satisfactorily support the load.
(C) The projecting portion 4 is provided at the corner portion 220 on the upper end side of the lower portion 22 . Therefore, damage to the corner 220, which is easily scratched, is easily prevented, and the design is excellent.
(D) The protrusion 4 is made of resin. Therefore, the projecting portion 4 can be easily formed into a predetermined shape, is excellent in manufacturability, and is lightweight.
(E) The lower portion 22 and the slope device 3 are rotated integrally. Therefore, the occupant can easily deploy, pull out, and store the slope device 3 . Also, the number of parts is small.

The present invention is not limited to these exemplifications, but is indicated by the scope of the claims, and is intended to include all modifications within the meaning and scope of equivalents of the scope of the claims.
For example, the following modifications are possible with respect to the first embodiment.

(Modification 1) The projecting portion 4 is formed integrally with the lower portion 22 . In this case, for example, the lower portion 22 may be locally thickened.

(Modification 2) The protrusion height of the protrusion 4 is in an irregular state and is large enough to contact the ground G when a load within a predetermined value is applied. That is, the protrusion height of the protrusion 4 may be approximately the same as the distance _h1 . In this case, the protrusion 4 functions more reliably as a support point.

(Modification 3) The projections 4 are a plurality of projections arranged in a row in the vehicle width direction of the lower portion 22 at intervals.

(Modification 4) The slope device 3 is of a folding type in which one or more movable plate portions are folded with respect to the fixed plate portion.

1 Vehicle Rear Structure 2 Back Door 20 Design Surface 21 Upper Part 22 Lower Part 23 Rotating Part 220 Corner Part 3 Slope Device 31 Fixed Plate Part 32 Movable Plate Part 33 Flapper 35, 36 Leg Part 38 Handle 4 Projection 100 Vehicle 101 Opening 102 Floor 103 End cross member G Ground W Wheelchair

Claims (1)

a back door that opens and closes an opening provided at the rear of the vehicle;
A vehicle rear portion structure comprising a rotating slope device that spans between the opening and the ground when the back door is open,
The backdoor is
an upper part that opens and closes the upper part of the opening;
a lower opening type lower part that opens and closes the lower part of the opening,
The lower part has a protrusion on the design surface on the vehicle outer side,
The protrusion contacts the ground together with the rear end of the slope device when a load exceeding a predetermined value is applied to the slope device that spans between the opening and the ground.
Vehicle rear structure.

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