JP2020196352A - Vehicle rear part structure - Google Patents

Abstract

To provide a vehicle rear part structure that can stably support a load applied to a slope device.SOLUTION: A vehicle rear part structure 1 comprises a back door 2 configured to open and close an opening 101 disposed at a rear side of a vehicle 100 and a rotary slope device 3 disposed to extend between the opening 101 and a ground surface G. The back door 2 includes an upper hinged type lower portion 22. The lower portion 22 includes a protrusion 4 on a design surface 20 at the vehicle outer side. The protrusion 4 is brought into contact with the ground surface G together with a rear end portion (a leg portion 35 or 36) of the slope device 3 when a load above a predetermined value is applied to the slope device 3 extended between the opening 101 and the ground surface G. When the load above the predetermined value is applied, the vehicle rear part structure 1 can support the load with a plurality of points of the protrusion 4 and the rear end portion of the slope device 3.SELECTED DRAWING: Figure 2

Description

The present invention relates to a vehicle rear structure including a slope device at the rear of the vehicle.

There is a vehicle equipped with a slope device used when getting on and off an occupant sitting in a wheelchair (eg, Patent Document 1). This slope device is typically provided at the rear of the vehicle, is deployed outside the vehicle from an opening at the rear of the vehicle with the back door open, and is bridged between the opening and the ground. ..

Patent Document 1 discloses a rotary slope device that can slide in the front-rear 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 a main hinge mechanism. This slope device is used as follows. First, open the upper part of the back door that opens upward. Next, the slope device and the lower portion are rotated downward to deploy the slope device outside the vehicle. After that, the movable plate of the slope device is pulled out. The end of the drawn movable plate is brought into contact with the ground (FIGS. 2 and 9 of Patent Document 1).

Japanese Unexamined Patent Publication No. 2013-141856

In a vehicle provided with the above-mentioned rotary slope device, 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 above-mentioned slidable structure, the state in which the movable plate is not sufficiently pulled out and is overlapped with the fixed plate (hereinafter referred to as an irregular state) is a state in which the slope device is used. Conceivable. In the irregular state, the slope length is shorter than in the state in which the movable plate is properly pulled out (hereinafter referred to as the regular state), and the end portion of the movable plate may be separated from the ground. It is conceivable that a load exceeding the expected predetermined value is applied to the slope device 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. Further, it is also conceivable that a load exceeding a predetermined predetermined value is applied to the rotating member such as the main hinge mechanism and deformed by the above-mentioned pressing or the like, and the support state of the slope device becomes unstable due to this deformation.

Further, in the irregular state, the distance h ₂ to the ground in the lower portion of the back door is smaller than the distance h ₁ 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, it may be cracked. It is desired that damage to the constituent members such as the above-mentioned deformation and rubbing can be prevented.

Even in the above-mentioned regular state, if a load exceeding the expected set value is applied to the slope device, an excessive load is applied to the rotating member or the constituent members are damaged as described above. Is possible.

Therefore, one of the objects of the present invention is to provide a vehicle rear structure capable of stably supporting the load applied to the slope device.

The vehicle rear structure according to one aspect of the present invention is
A back door that opens and closes the opening provided at the rear of the vehicle,
A vehicle rear structure including a rotary slope device bridged between the opening and the ground with the back door open.
The back door
An upper part that opens and closes the upper part of the opening,
A lower opening type lower portion that opens and closes below the opening is provided.
The lower portion is provided with a protrusion on the design surface on the outside of the vehicle.
The protrusion comes into contact with the ground together with the rear end of the slope device when a load exceeding a predetermined value is applied to the slope device bridged between the opening and the ground.

In the vehicle rear 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 between the protrusion of the lower portion and the rear end portion of the slope device, the vehicle rear structure can stably support the load applied to the slope device.

Further, when the protrusion comes into contact with the ground, the load applied to the rotating member such as the slope device is reduced, and the design surface of the lower portion is prevented from rubbing against the ground. Therefore, the vehicle rear structure can effectively suppress damage to the constituent members.

FIG. 5 is a schematic perspective view showing a state in which the upper portion of the back door is opened in the vehicle rear structure according to the first embodiment. FIG. 5 is a schematic side view showing a case where the usage state of the slope device is a regular state in the vehicle rear structure according to the first embodiment. FIG. 5 is a schematic side view showing a case where the usage state of the slope device is an irregular state in the vehicle rear structure according to the first embodiment.

Hereinafter, the vehicle rear structure of the present invention will be specifically described with reference to the drawings.
In the figure, the same reference numerals indicate the same names.
In the figure, "FR" is the front of the vehicle, "RR" is the rear of the vehicle, "UP" is the upper part of the vehicle, "LWR" is the lower part of the vehicle, "RH" is the right side of the vehicle, and "LH" is the vehicle. Shown to the left. Hereinafter, they may be simply referred to as front, rear, upper, lower, right, and left.

[Embodiment 1]
The vehicle rear structure 1 according to the first embodiment will be described with reference to FIGS. 1 to 3.
2 and 3 are side views of the rear area of the vehicle 100 including the vehicle rear structure 1 as viewed 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 structure 1 of the first embodiment is used for a vehicle 100 including a back door 2 and a rotary slope device 3. The slope device 3 is rotated from the rear opening 101 of the vehicle 100 to the outside of the vehicle by rotating the back door 2 in an open state, and is bridged between the opening 101 and the ground G (FIG. FIG. 2). The slope device 3 is typically used when a 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 structure 1 of the first embodiment has a configuration 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 is provided with a protrusion 4 on the design surface 20 on the outer side 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 in this example is a one-box vehicle. An opening 101 is provided behind the vehicle body of the vehicle 100. The back door 2 opens and closes the opening 101.

In the passenger compartment of the vehicle 100, the area behind the back door 2 is used as a storage / storage space. Specifically, the slope device 3 (see the alternate long and short dash line in FIG. 2) and other luggage (not shown) when not in use are stored, and the occupant sitting in the wheelchair W is stored.

A cross member is provided on the floor 102 of the passenger compartment along the vehicle width direction. 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 structure divided into upper and lower parts, and includes an upper part 21 and a lower part 22.

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

The lower portion 22 is a downward opening type door that opens and closes the lower portion of the opening 101. In this example, the rotating portion 23 of the lower portion 22 is provided on the end cross member 103 located 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, a part of the slope device 3 is fixed to the lower portion 22. Specifically, in a state where the slope device 3 is deployed outside the vehicle (hereinafter referred to as a deployed state), the lower portion 22 and a part of the slope device 3 are arranged so that the lower portion 22 is located below the slope device 3. 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 design surface 20 on the outside of the vehicle of the lower portion 22 includes a rear end surface (lower end surface in the deployed state) facing rearward when the lower portion 22 is closed, an upper surface facing upward, and a rear end surface. It has a corner portion 220 with the upper surface (FIG. 2). The lower portion 22 of this example includes a protrusion 4 at a corner portion 220.

(Slope device)
Hereinafter, the slope device 3 will be described mainly with reference to FIGS. 2 and 3.
The slope device 3 is a rotary type as described above. 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. Further, the slope device 3 of this example has a slidable structure. Specifically, the slope device 3 is a two-stage 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 form a slope main body.

<Fixed plate part>
In this example, the region on one end side of the fixing plate portion 31 (the front region in the deployed state) is overlapped and fixed on the lower portion 22. This one-end region is located above the lower portion 22 in the unfolded state.

The fixing plate portion 31 of this example includes a leg portion 36 at the other end portion (rear end portion in the deployed state). The leg portion 36 is provided so as to project from the surface (lower surface) of the fixing plate portion 31 facing the ground G toward the ground G in the deployed state.

<Movable plate part>
The movable plate portion 32 is provided so as to be slidable in the front-rear direction of the vehicle 100 in the deployed state. One end of the movable plate portion 32 (the front end portion in the unfolded state) is superposed on the fixed plate portion 31 and supported by the fixed plate portion 31.

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

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

<Flapper>
The slope device 3 of this example further includes a flapper 33. The flapper 33 covers the gap formed between the vehicle body and the lower portion 22 of the back door 2 in the deployed state. The fixing 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.

For the basic configuration, materials, etc. relating to 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, etc. can be referred to.

(protrusion)
The protrusion 4 is a rear end portion (here, a leg portion 35 or 36) of the slope device 3 when a load exceeding a predetermined value is applied to the slope device 3 bridged between the opening 101 and the ground G. ) And the protrusion height and the forming position are adjusted so as to come into contact with the ground G. Such a protrusion 4 is used as a support point with respect to the ground G together with the rear end portion of the slope device 3 when a load exceeding a predetermined value is applied when the slope device 3 is used. Further, it can be said that such a protrusion 4 constitutes the lowermost portion of the lower portion 22 when the slope device 3 is used. The protruding height of the protruding 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 portion in the unfolded state.

The specifications of the protrusion 4 in this example are as follows. The specifications of the protrusion 4 can be appropriately changed within a range of contact with the ground G when a load exceeding a predetermined value is applied (see a modified example described later).
(1) The protrusion 4 is a single protrusion that is continuous in the vehicle width direction. Further, the protrusion 4 is a striatum sufficiently thinner than the size along the vertical direction of the lower portion 22 in a state where 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 protrusion 4 is provided on the upper end side of the lower portion 22 (FIG. 1). Further, the protrusion 4 is provided so as to protrude below the corner 220 in the deployed state of the slope device 3 (FIG. 2).
(4) The protrusion 4 is a member independent of the lower portion 22, and is removable from the lower portion 22.
(5) The protrusion 4 is a resin molded body.

Next, the non-use state and the use state of the slope device 3 will be described in order.
(Unused state)
When the slope device 3 is not used, the fixed plate portion 31 and the movable plate portion 32 are overlapped with each other and are housed in the vicinity of the back door 2 in the passenger compartment while standing upright with respect to the floor 102 (FIG. 2). See two-dot chain line). In this example, the above-mentioned standing state is constructed by bending a part of the flapper 33 in a center-folded shape.

(Usage condition)
Of the used states, the regular state will be described mainly with reference to FIG. The irregular state will be described mainly with reference to FIG.

<Regular state>
When using the slope device 3, first, the upper portion 21 of the back door 2 is opened (FIG. 1).
Next, a 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. Further, 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 grasping the handle 38 and tilting the free end (the upper end in the two-dot chain line in FIG. 2) of the slope device 3 from the upper side to the lower side.
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 in which the flapper 33, the fixed plate portion 31, and the movable plate portion 32 are arranged in this order is provided 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. The distance between the design surface 20 and the ground G of the lower portion 22 of the slope is h _1. 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 an assumed predetermined value.

<Irregular state>
Next, a case where the slope device 3 is used in a state where the fixed plate portion 31 and the movable plate portion 32 are overlapped with each other without the movable plate portion 32 being sufficiently pulled out 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 in which the slope length is shorter than in the regular state. In this slope, the rear end portion (here, the leg portion 35) of the slope device 3 may be separated from the ground G, and the slope device 3 is further pushed down by a wheelchair W or the like to bring the rear end portion into contact with the ground G. Can be considered. In this case, it is conceivable that a load exceeding a predetermined predetermined value is applied to the slope device 3. The two-dot chain line in FIG. 3 virtually shows a state in which the slope device 3 is bent by a load exceeding the above-mentioned predetermined value. Further, FIG. 3, in order to explain the distance h ₁ in the regular state, above the protruding portions 4 indicated by a solid line, virtually shown only a part of the protruding portions 4 by a two-dot chain line. Note that FIG. 3 shows the slope device 3 in an enlarged manner as compared with FIG.

(Main action)
In the vehicle rear structure 1 of the first embodiment, when a load exceeding the above-mentioned predetermined value is applied to the slope device 3, the rear end portion of the slope device 3 (here, the leg portion 35 or the leg portion 35 or the like) is in a state where the slope body is pushed down. The protrusion 4 comes into contact with the ground G together with 36). Therefore, the load can be supported at two points, the rear end portion and the protrusion 4.

Even in the regular state, when a load exceeding the above-mentioned predetermined value is applied to the slope device 3, the slope main body is pushed downward so that the protrusion 4 comes into contact with the ground G. Therefore, also in this case, the load can be supported at two points, the rear end portion of the slope device 3 and the protrusion 4.

(Main effect)
The vehicle rear structure 1 of the first embodiment 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 structure 1 can stably support the load applied to the slope device 3.

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

Further, when the protrusion 4 of the lower portion 22 comes into contact with the ground G, the design surface 20 is prevented from being rubbed against the ground G and being scratched or cracked. In particular, when an excessive load is applied in an irregular state or in a regular state, a load (appropriate load) in which the distance to the ground G on the design surface 20 of the lower portion 22 is within the above-mentioned predetermined value acts. Shorter than the state. However, even in these cases, the protrusion 4 is arranged closer to the ground G than the design surface 20. Therefore, damage to the design surface 20 and thus damage to the lower portion 22 are effectively prevented. Further, even when the lower portion 22 is inadvertently rotated when the ground G is locally raised, the protrusion 4 is more likely to come into contact with the raised portion of the ground G than the design surface 20, so that the design Damage to the surface 20 and the like is prevented.

Further, the vehicle rear structure 1 of this example also has the following effects.
(A) The number of protrusions 4 is one. Therefore, the protrusion 4 can be easily attached or replaced. In addition, the number of parts is small.
(B) The protrusion 4 is provided over the entire width of the lower portion 22. Therefore, the protrusion 4 can satisfactorily support the load.
(C) The protrusion 4 is provided at the corner 220 on the upper end side of the lower portion 22. Therefore, damage to the corner portion 220, which is easily scratched, is easily prevented, and the design is excellent.
(D) The protrusion 4 is made of resin. Therefore, the protrusion 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 integrally rotated. Therefore, the occupant can easily deploy, pull out, and store the slope device 3. In addition, the number of parts is small.

The present invention is not limited to these examples, and is indicated by the scope of claims, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.
For example, the following modifications can be made with respect to the first embodiment.

(Modification Example 1) The protrusion 4 is integrally molded with the lower portion 22. In this case, for example, the lower portion 22 may be locally formed to be thick.

(Deformation Example 2) The protruding height of the protruding portion 4 is such that it comes into contact with the ground G in an irregular state in which a load within a predetermined value is applied. That is, the protruding height of the protruding portion 4 and the distance h ₁ may be comparable. In this case, the protrusion 4 functions more reliably as a support point.

(Modification 3) The protrusion 4 is a group of a plurality of protrusions arranged at intervals in the vehicle width direction of the lower portion 22.

(Modification Example 4) The slope device 3 is a foldable 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 Square part 3 Slope device, 31 Fixed plate part, 32 Movable plate part, 33 Flapper 35, 36 Legs, 38 Handle 4 Protrusion 100 Vehicle, 101 Opening, 102 Floor, 103 End Cross Member G Ground, W Wheelchair

Claims (1)

A back door that opens and closes the opening provided at the rear of the vehicle,
A vehicle rear structure including a rotary slope device bridged between the opening and the ground with the back door open.
The back door
An upper part that opens and closes the upper part of the opening,
A lower opening type lower portion that opens and closes below the opening is provided.
The lower portion is provided with a protrusion on the design surface on the outside of the vehicle.
The protrusion comes into contact with 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 bridged between the opening and the ground.
Vehicle rear structure.

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