JPH10109662A - Body structure for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the getting on and the getting off property of passengers as well as to secure the strength and the rigidity of a car body, in a car body whose whole body is composed of a skeleton member, as to the door structure for vehicle suitable to be used to a door structure installed to an automobile whose body is composed of a skeleton member (frame). SOLUTION: In the body structure for automobile whose whole body of the car body 1 is composed of a skeleton member, a double-leafed hinged door type door 70 which is composed of a side surface opening formed of the side skeleton members 2 and 3 of the body 1; a front door 40 whose front end is installed to a front skeleton member 4 to form the side surface opening through hinges 63 and 64; and a rear door 50 whose rear end is installed to a rear skeleton member 3 to form the side surface opening through hinges 51 and 52; is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle body structure including a skeletal member (frame) over the entire body.

[0002]

2. Description of the Related Art In recent years, as a body structure of an automobile, a monocoque having a frame (frame member) and a body integrated with each other in order to reduce the weight while securing its rigidity and strength.
Many bodies are adopted. On the other hand, as the body structure of trucks and off-road vehicles, a frame structure in which a body (generally a monocoque body is generally used) is mounted on a ladder frame, and the rigidity and strength of the body depend on the frame. ing.

[0003] In addition, steel is generally employed as a material of the vehicle body in order to secure the strength and rigidity of the vehicle body. However, in order to reduce the weight of the vehicle, aluminum (generally, aluminum alloy) is partially used. Used in vehicles. At present, there is a monocoque body that uses aluminum.

[0004]

Considering the vehicle body structure from the viewpoint of the occupant's getting on and off, for example, in a two-door vehicle, the side opening of the vehicle is small. Is not good. Also, even in a four-door vehicle, in the case of a vehicle with a short overall length, the rear door is formed to be smaller than the front door, and accordingly, the side opening for mounting the rear door is necessarily small. In particular, it is not very easy to get on and off the rear seat.

[0005] For this reason, for example, the side opening for attaching the door is made as large as possible, or a walk-in mechanism is provided in the front seat to improve the getting on and off of the rear seat. However, such conventional technology is generally applied to a monocoque body,
In the case of a monocoque body, there is a limit in expanding the side opening of the vehicle body, and it is difficult to sufficiently improve the occupant's getting on and off.

Therefore, it is conceivable to enlarge the side opening of the vehicle by forming the entire vehicle body with a frame structure made of, for example, aluminum. Of course, aluminum has lower strength and rigidity than steel, so in order to secure the strength and rigidity of the car body, it is necessary to make the frame thicker or arrange the frame at high density. May protrude into the cabin space and reduce the effective space in the cabin. If the frames are arranged at a high density, it is difficult to secure a sufficient door opening area.

A double door type door structure without a center pillar has been conventionally developed. In such a door structure, the side of the vehicle body opens sufficiently large when the door is opened. This is convenient for improving the ease of getting on and off the rear seat. In view of this, it is conceivable to adopt a double door type door structure without the center pillar in a structure in which the entire vehicle body having a large side opening as described above has a frame structure.

However, if a structure without a center pillar is adopted, it is difficult to secure rigidity and strength in a monocoque body, and in particular, safety against a side collision is reduced. Incidentally, regarding a double door type door structure without a center pillar, as a technique for improving safety against a side collision, for example, Japanese Unexamined Patent Publication No. 61-17 / 1986
There is one disclosed in Japanese Patent Publication No. 688. With this technology,
In double door type door structure without center pillar,
In consideration of safety against a side collision, the door body and the window frame and the reinforcement are formed and fixed in a box shape with a horizontal cross section, and the end of the door guard bar is connected to the reinforcement.

However, this technology does not disclose any body structure or material to which a double door is attached, and the door structure is a so-called panel door in which a window frame and a door panel are integrally formed by press forming. There is no disclosure or suggestion of a door structure constituted by a skeletal member. SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and aims to improve strength and rigidity of a vehicle body and improve occupant getting on and off in a vehicle body entirely formed of a frame member (frame). It is an object of the present invention to provide a vehicle body structure which can be used.

[0010]

According to a first aspect of the present invention, there is provided an automobile body structure according to the present invention, wherein the vehicle body structure comprises a frame member over the entire vehicle body. A front door in which a front end is attached via a hinge to a front skeleton forming the side opening, and a rear end is provided through a hinge to a rear skeleton forming the side opening. And a double door which is composed of a rear door mounted and mounted.

According to a second aspect of the present invention, there is provided a vehicle body structure according to the first aspect, wherein the vehicle body side frame member is formed by combining an upper member and a lower member. A stopper mechanism provided at an upper end and a lower end of the rear door for fixing the rear door to the upper member and the lower member in a closed state, and a stopper mechanism connected to the stopper mechanism for releasing the rear door from being fixed to the side opening. A release means is provided.

According to a third aspect of the present invention, in the vehicle body structure according to the first or second aspect, when the front door and the rear door are closed, the rear end of the front door is a front end of the rear door. It is characterized in that it is configured to be overlaid from the outside. According to a fourth aspect of the present invention, there is provided a vehicle body structure according to the third aspect, wherein the front end of the rear door is formed of a highly rigid frame.

According to a fifth aspect of the present invention, in the vehicle body structure according to the first aspect of the present invention, the rear end of the front door is provided on the front door with the rear door closed. A door lock mechanism for fixing the door lock mechanism to the front end of the rear door, and a door lock release mechanism for releasing the door lock mechanism. The vehicle body structure for an automobile according to the present invention according to claim 6 is,
5. The structure according to any one of items 5, wherein the front door is formed larger than the rear door.

Preferably, each of the frame members constituting the vehicle body and the front and rear doors is formed of an extruded material.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 to 10 show a vehicle body structure according to an embodiment of the present invention. Will be explained. The vehicle body structure according to the present embodiment relates to a skeletal structure (frame structure) in which the entire vehicle body is configured by a skeletal member (frame). The skeletal members forming the vehicle body structure are all made of aluminum in order to reduce the weight of the vehicle. It is formed of a material (aluminum alloy).

First, regarding this vehicle body structure, FIGS.
This will be described with reference to FIG. The vehicle body structure according to the present embodiment is used for an electric vehicle. FIG. 7 is an exploded perspective view of a vehicle body to which an automobile door is attached. In FIG. 7, reference numeral 1 denotes a vehicle body, and side member lowers (lower members of vehicle body side frame members) 2 and 2 extending in the front-rear direction of the vehicle body 1 are provided below the left and right sides of the vehicle body 1.
Upper members (upper members of body side frame members) extending in the front-rear direction of the vehicle body 1
Are provided respectively.

Each of the side member lowers 2, 2 and 3 is formed by bending an extruded material formed by extrusion of an aluminum material (aluminum alloy). In the case of the side member lowers 2, 2, the front ends 2a, 2a and the rear ends 2b, 2b are formed by bending and then cutting the lower part as shown in FIG. In FIG. 8, for convenience of explanation, only the front end 2a of the side member lowers 2, 2 is shown, and in the drawing, the broken line shows the shape of the front end 2a before cutting. In addition, below the side member lowers 2, 2,
A battery storage unit 12 described later is connected, and is hatched for easy understanding.

The side member lowers 2, 2 have a structure in which the front side member and the rear side member are integrated in order to increase the strength and rigidity. The front end portions 2a, 2a and the rear end portions 2b, 2b of the side member lowers 2, 2 thus formed serve as an energy absorbing portion for absorbing an impact force at the time of a frontal collision of an automobile. . Further, the cross-sectional characteristics (characteristics relating to the second moment of area, etc.) are configured to gradually increase toward the center of the vehicle, so that the rigidity on the side surface of the vehicle compartment is increased, so that the vehicle can cope with a side collision of the vehicle. It has become. In determining the cross section of the extruded material,
This is performed by obtaining necessary cross-sectional characteristics by CAE or the like.

On the other hand, the side member uppers 3, 3 are formed by three-dimensional bending without cutting. The side member uppers 3, 3 are connected to the side member lowers 2, 2 by welding or the like. In other words, the vicinity of the front ends 2a, 2a of the side member lowers 2, 2 and the front ends 3a, 3a of the side member uppers 3, 3 are connected via the connecting members 32, 32. The rear ends 2b, 2b and the rear ends 3b, 3b of the side member uppers 3, 3 are also connected via connecting members 33, 33 to form side opening portions from the side member lowers 2, 2 and the side member uppers 3, 3. Is formed.

Further, these side member lowers 2, 2
Diagonal members (front body frame portions) 4 and 4 are joined by welding or the like to the front side of the side opening between the and the side member uppers 3 and 3. Note that the oblique members 4 and 4 are configured as extruded members by extrusion molding. In addition, diagonal material 4,4
Between them, the cross member 27 is joined by welding or the like to increase the rigidity.

The side member lowers 2, 2, the side member uppers 3, 3, and the diagonal members 4, 4 form a skeleton of a side surface of the vehicle body 1, and a side opening formed by these members will be described later. The front door 40 and the rear door 50 are attached. In particular, a skeleton structure composed of the side member lowers 2 and 2 and the side member uppers 3 and 3 is referred to as an exoskeleton structure.

Further, these side member lowers 2, 2
As shown in FIG. 7, the cross members 5 to 11 are connected therebetween. In particular, the cross member 6 is coupled to the side member lowers 2 and 2 and the side member uppers 3 and 3 via the coupling members 32 and 32, and the cross member 11 is coupled to the side member lower via the coupling members 33 and 33. 2, 2 and the side member upper 3, 3. The cross member 5 is attached to the side member lowers 2 and 2 via the coupling member 34, and the cross member 10 is attached to the side member lowers 2 and 2 via the coupling member 35. The cross members 7, 8, 9 are connected to the side member lowers 2, 2 by welding or the like.

Further, a front suspension (not shown) is provided below the cross member 6, and an input point from the suspension is located on the cross member 6. As shown in FIG. 7, a battery storage section 12 for storing a battery for an electric vehicle is connected between the side member lowers 2 and 2 and below the cross members 7 to 9. Note that the upper surface of the battery storage section 12 is
Of the floor surface 12a.

That is, the battery storage section 12 is
As shown in the figure, a plurality of hollow extruded members 12b, 12c,
12d, the extruded members 12b, 12c,
The battery (not shown) is inserted into the hollow portion 12d to be accommodated. 9 is the same as FIG.
XX, and only one side (left side) of the vehicle body 1 is shown for convenience of description, but the other side (right side) is also formed symmetrically to this. In the figure, the extruded material 12b,
The hatched portions of the hollow portions 12c and 12d are provided for easy understanding. The extruded material 12b is also used as a side sill.

A chassis member 13 extending in the front-rear direction of the vehicle body 1 is connected between the extruded member 12c and the extruded member 12d. That is, the chassis member 13 is formed integrally with the battery storage unit 12. Further, the chassis member 13 is also configured as an extruded material. Here, since only one side of the vehicle body 1 is shown, only one chassis member 13 is shown, or actually, the two chassis members 13 are combined so as to be bilaterally symmetric.

On both sides of the battery housing 12,
Malls 38, 38 are attached, and this mall 3
The surfaces of 8, 38 and the side member lowers 2, 2 are used as exteriors. As shown in FIG. 7, these chassis members 13 are provided with front end portions 13 thereof.
The front cross member 14 is attached to the members 13a and 13a via a coupling member 35. The upper ends 14a, 14a of the front cross member 14 are attached to the front ends 2a, 2a of the lower side members 2, 2 via a coupling member 34.

The rear end 1 of the chassis members 13
The rear cross member 15 is attached to 3b, 13b via a connecting member 36. The upper end portions 15a, 15a of the rear cross member 15 are side member lowers 2,
2 are attached to the rear end portions 2b, 2b, etc., via coupling members 33. Further, between the chassis members 13, 13, a connecting member 1 is provided at a front end side thereof so as to connect them.
6 is attached.

The cross member 9 and the cross member 10
7, a panel-shaped rear floor front 17 is connected by plug welding or the like, as shown in FIG. The front edge of the rear floor front 17 is connected to the upper surface of the cross member 9, and the rear edge is connected to the upper surface of the cross member 10.
The inner members 9 and 20 are connected to the inner surfaces of the lower side members 2 and 2 by plug welding or the like. Although FIG. 7 is an exploded perspective view, the side member lowers 2, 2 and the like are overlapped for easy understanding of the attached state of the rear floor front 17.

As shown in FIG. 7, a panel-shaped rear floor rear 22 is connected between the cross member 10 and the cross member 11 by plug welding. Although FIG. 7 is an exploded perspective view, the side member lowers 2, 2 and the like are overlapped for easy understanding of the attached state of the rear floor rear 22. By the way, between the side member uppers 3, 3, the roof cross members 23 to
The roof cross members 23 to 26 and the side member uppers 3, 3 constitute a skeleton of a roof portion of the vehicle body 1, and include a dash panel (not shown), a front glass 28, a roof panel 29, and a rear glass. 30 and a rear door 31 are attached.

Hereinafter, a structure for attaching each panel or glass to the side member uppers 3, 3 will be described, and then, a structure for attaching to the roof cross members 23 to 26 will be described. First, the cross member 6 and the roof cross member 23
Between them, a dash panel (not shown) is attached.

A windshield 28 is attached between the roof cross member 23 and the roof cross member 24, as shown in FIG. That is, the windshield 28 is attached to the surfaces of the roof cross member 23, the roof cross member 24, and the side member uppers 3, 3 with their peripheral edges adhered. Here, the state of attachment of the windshield 28 to the side member uppers 3, 3 will be described. FIG. 10A is a cross-sectional view showing the attachment state of a large portion of the camber of the windshield 28,
FIG. 10 is a cross-sectional view taken along the line AA of FIG. 7, and FIG. 10B is a cross-sectional view of a small portion of the camber of the windshield 28, which is a cross-sectional view taken along the line BB of FIG. 7.

As shown in FIGS. 10 (A) and 10 (B), the windshield 28 has flanges 3A, 3A formed at the upper end portions of the side member uppers 3, 3 so as to be recessed from the outer surface serving as the exterior of the vehicle. A molding 39 is attached to 3A with an adhesive 37, and between the windshield 28 and the side member uppers 3, 3.

As described above, since the windshield 28 has a large portion and a small portion of the camber, the surfaces of the flange portions 3A, 3A are aligned with respect to the windshield 28. As shown in FIG. 7, a roof panel 29 is connected between the cross member 24 and the cross member 25 by plug welding. That is, the flange portion 29A formed on the peripheral portion of the roof panel 29 is connected to the surfaces of the roof cross member 24, the roof cross member 25, and the side member uppers 3, 3 by plug welding. The roof panel 29 is formed into a panel shape by pressing.

Here, FIG. 10C shows the roof panel 29.
FIG. 8 is a cross-sectional view showing the state of attachment to the side member uppers 3, 3, and is a cross-sectional view taken along the line CC of FIG. This FIG.
As shown in (C), the flange portion 2 of the roof panel 29
9A and 29A are plug-welded to the flange portions 3A and 3A formed to be slightly depressed at the upper end portions of the side member uppers 3 and 3 and the molding 39 is attached from above.

An acrylic rear glass 3 is provided between the roof cross member 25 and the roof cross member 26.
0 is adhered. That is, the periphery of the rear glass 30 is connected to the roof cross member 25 and the roof cross member 26.
And it is adhered to the surfaces of the side member uppers 3,3. Here, FIGS. 10D and 10E are cross-sectional views showing a state where the rear glass 30 is attached to the side member uppers 3 and 3. FIG. 10D shows a case where the camber of the rear glass 30 is large, and FIG. 10D is a cross-sectional view taken along the line DD of FIG. FIG. 10E shows the rear glass 30.
In the case of a small camber of FIG.
It is arrow sectional drawing.

As shown in FIGS. 10D and 10E,
Flanges 3A, 3A formed so that the edge of rear glass 30 is slightly depressed at the upper ends of side member uppers 3, 3.
The molding 39 is attached between the rear glass 30 and the side member uppers 3 and 3. As described above, since the size of the camber of the rear glass 30 varies depending on the mounting position, when the surfaces of the flange portions 3A, 3A of the side member uppers 3, 3 do not match, the correction is performed by the adhesive 37.

A rear panel 31 is connected between the roof cross member 26 and the cross member 11 by plug welding. That is, the flange 31A formed on the peripheral edge of the rear panel 31 is
6, are joined to the surfaces of the cross member 11 and the side member uppers 3, 3 by plug welding. The rear panel 31 is formed into a panel shape by pressing.

FIG. 10 (F) is a sectional view showing a state where the rear panel 31 is attached to the side member uppers 3, 3, and is a sectional view taken along the line FF of FIG. This FIG.
As shown in (F), the flange portion 31 of the rear panel 31
A, 31A are plug-welded to the flange portions 3A, 3A formed so as to be slightly depressed at the upper end portions of the side member uppers 3, 3, and the molding 39 is attached from above. If the flange portions 31A of the rear panel 31 do not conform to the shapes of the flange portions 3A of the side member uppers 3, 3, the flange portions 31A of the rear panel 31 may be used.
A, 31A.

Next, a description will be given of a structure for attaching to the roof cross members 23 to 26. FIG. 10 (G) shows the roof cross member 2 of the windshield 28 and the roof panel 29.
FIG. 7 is a diagram showing a state of attachment to a fourth member. As shown in FIG. 10 (G), the edge of the windshield 28 is bonded to the surface of the roof cross member 24 with an adhesive 37, and the flange 29A formed at the end of the roof panel 29 is plug-welded. Like that. Further, a molding 38 is mounted on the windshield 28 and the roof panel 29.

In this case, the roof cross member 24
Although only the structure of attachment to the roof cross member 2 has been described,
The same applies to the mounting structure to 3, 25, 26. The mounting state of the molding 39 is as shown in FIG. Side member lower 2, 2, side member upper 3, 3, diagonal member 4, cross member 5-11, battery housing 12, chassis member 1 constructed as described above.
3, front cross member 14, rear cross member 1
5, Roof cross member 23-26, cross member 27
Each correspond to a skeletal member (frame).

The vehicle body structure in this embodiment is
The skeleton is configured as described above, and a door is attached to such a vehicle body as shown in FIG. Here, the structure of this door will be described. In FIG.
Reference numeral 40 denotes a front door, the front end of which is attached to the diagonal member 4 constituting the front frame of the vehicle body 1 via hinges 63, 64. Reference numeral 50 denotes a rear door whose rear end is the rear end 3b of the side member upper 3,3.
It is attached to the vicinity via hinges 51 and 52.
In the present embodiment, the vicinity of the rear ends 3b, 3b of the side member uppers 3, 3 constitutes a rear frame.

The double door 7 from the front door 40 and the rear door 50 attached to the vehicle body 1 in this manner.
0 is configured. First, the front door 40 will be described. FIG. 2A is a schematic front view showing the front door 40, and FIG. 2B is a schematic side view thereof. As shown in FIG. 2A, the front door 40 includes a front door frame 41 and a front door body frame 42 constituting a front door body.

The front door frame 41 comprises an upper frame 41a and a lower frame 41b, and the lower end of the upper frame 41a and the upper end of the lower frame 41b are joined by welding or the like. The front door body frame 42 is, as shown in cross section in FIG.
It is formed in a hollow shape by extrusion molding. At the lower end, an impact bar portion 42a which is expanded to have a semi-cylindrical cross section and has an increased plate thickness is formed, and the impact bar portion 42a can absorb an impact force at the time of a side collision. It has become.

The front door body frame 42 is connected to the inner peripheral surface of the front door frame 41 as shown in FIG. In FIG. 2A, the portion of the front door body frame 42 is hatched to make the description easier to understand, and the portion corresponding to the impact bar portion 42a is indicated by a fine hatched portion. Is attached. Also, the front door body frame 4
An outer plate 47 is attached to cover the front door frame 41 and the lower frame 41b of the front door frame 41, and a front door glass 46 is provided on the upper edge of the front door body frame 42 and the upper frame 41a of the front door frame 41. Is glued.

As shown in FIG. 6, a latch striker 43 is attached to a substantially central portion of the rear end of the front door body frame 42. On the other hand, a latch pin 61 is attached to the rear door frame 53 by a bracket. Attached via 60. And the latch striker 43
Locks the front door 40 in a state where the rear door 50 is closed.
Can be fixed (locked).

The latch striker 43 and the latch striker 43
Since the rear end of the front door 40 and the front end of the rear door 50 are locked by the pins 61, these are called a door lock mechanism. The latch striker 43 is connected to a door knob 44 for a front door as a door unlocking mechanism.
Can be opened.

FIG. 6 is a sectional view taken along the line CC of FIG. In FIG. 6, reference numeral 59 denotes a weather strip.
A front door glass 46 is bonded to the front door frame 41, and a rear door glass 55 is bonded to the rear door frame 53. FIG.
Reference numeral 45 denotes an inner handle as a door lock release mechanism.
3 is connected.

On the other hand, as shown in FIG. 3, the rear door 50 comprises a rear door frame 53, an outer plate 54 and the like. The rear door frame 53 includes an upper frame 53a and a lower frame 53b, and each lower end of the upper frame 53a and each upper end of the lower frame 53b are joined by welding or the like. Also, these frames 53a, 5
3b is formed in a hollow shape by extrusion molding.

An outer plate 54 is attached to the outside of the lower frame 53b of the rear door frame 53, and a rear door glass 55 is adhered to the outside of the upper frame 53a of the rear door frame 53 by an adhesive 37.
The linear front end 53c of the rear door frame 53
As shown in FIG. 3, the rear door frame 53 is formed so as to have a larger sectional characteristic than other portions, and is configured as a highly rigid frame (high rigid frame).

FIG. 4 is a schematic view for explaining the engaging member attached to the rear door 50, and is a sectional view taken along the line AA of FIG. As shown in FIG. 4, an engagement member 57 for fixing the rear door 50 to the side member upper 3 in a closed state is attached to the upper end of the inner surface of the front end 53 c of the rear door frame 53. The engaging member 57 includes a wedge-shaped protrusion 57a having a sloped end 57d, a case 57c for accommodating a lower portion of the protrusion 57a, and a spring 57b built in the case 57c. The projecting portion 57a is
c to be able to move in the vertical direction (the direction of the arrow in the figure).

The projection 57a is urged upward by a spring 57b. On the other hand, a stopper member 58 projects downward from the lower edge of the side member upper 3. The tip of the stopper member 58 is also formed in a wedge shape and has an inclined surface 58a. These engaging members 57
The stopper mechanism is composed of the stopper member 58 and the stopper member 58.

When the rear door 50 is closed, the inclined surface 57d of the projection 57a contacts the inclined surface 58a of the stopper member 58, and slides on the inclined surface 58a. It is ejected downward while resisting the urging force. Then, when the rear door 50 is further closed and the protrusion 57a enters the inside of the stopper member 58, it is released from the restraint of the inclined surface 58a, and the protrusion 5a is released.
7a is returned upward by a spring 57b, and its outer surface 57e comes into contact with the inner surface 58b of the stopper member 58, so that the rear door 50 can be fixed in a closed state.

Further, the projecting portion 57 constituting the stopper mechanism
a is connected via a wire 65 to a rear door door knob 62 serving as a stopper mechanism releasing means, and the rear door door knob 62 moves the protruding portion 57a downward so that the side member upper 3, 3 of the rear door 50 is moved. 3
You can release the fixation to. The rear door door knob 62 is provided only inside the rear door 50.

The engaging member 57 attached to the upper end of the rear door frame 53 is also attached to the lower end of the rear door frame 53 in the same manner. In addition,
In FIG. 4, reference numeral 59 denotes a weather strip, which is attached along the outer periphery of the rear door frame 53. The front door 40 and the rear door 50 constitute a double door-type door 70, and when the front door 40 and the rear door 50 are closed, as shown in FIG. The front door frame 41 overlaps the front end 53c of the front door 53 from outside.
The inner surface of the weather strip 59 attached to the rear end of the rear door frame 53 is pressed against the outer surface of the front end 53c of the rear door frame 53,
The side opening of the vehicle body 1 is completely closed.

In this embodiment, the front door 40
Are main doors, and the rear part of the vehicle interior inside the rear door 50 is a luggage compartment, so that it is formed larger than the rear door 50. Further, as described above, the rear door frame as the skeleton member constituting the rear door 50, such as the side member upper as the skeleton member, the front door frame as the skeleton member constituting the front door 40, is molded as an extruded material, as described above, Further, these skeletal members (frames), that is, the front door frame 41, the front door body frame 42, and the rear door frame 53 are
It is made of aluminum to reduce the weight.

Since the vehicle body structure according to the embodiment of the present invention is configured as described above, the following functions and effects are obtained. That is, in the vehicle having the vehicle body structure of the present embodiment, the occupant operates the latch striker 43 by the front door door knob 44 or the inner handle 45.
Can be opened to open the front door 40 and get on and off.

Also, the occupant can use the door knob 4 for the front door.
4 or the inner handle 45 opens the latch striker 43 to open the front door 40, and then unlocks the rear door 50 with the rear door door knob 62 to open the rear door 50. Can be. Further, at the time of a side collision of the vehicle having the vehicle body structure of the present embodiment, the impact force acts on the impact bar portion 42a of the front door 40, and the impact bar portion 42a protects the inside of the vehicle compartment. At this time, the front end side of the impact bar portion 42a is supported by the high rigid side member lower 2 and the side member upper 3 via the diagonal member 4 to which the front door 40 is attached, and the rear end of the impact bar portion 42a. The side is supported by a highly rigid front end 53c of the rear door 50 via a weatherstrip 59 attached to the rear end of the front door 40. Furthermore, the rear door frame 5
The upper and lower ends of the front end portion 53c are supported by the highly rigid side member lower 2 and the side member upper 3 via the weather strip 59 attached to the outer periphery of the rear door 50.

As described above, by forming the framework of the side opening by the side member upper 3 and the side member lower 2 having high rigidity, the strength and rigidity of the vehicle body side part, and further, the strength and rigidity of the vehicle body are ensured. However, it is possible to make the door 70 of the double door type, and it is possible to widen the side opening of the vehicle body 1 and improve the occupant's getting on and off while sufficiently securing the safety and durability of the vehicle. There are advantages.

Particularly, in the case of a side collision, as described above, the side member lower 2 having the front side member and the rear side member integrally formed and the front door body 4
There is also an advantage that the safety can be sufficiently ensured mainly by the second impact bar portion 42a. Further, the front end portion 53c of the rear door frame 53 is formed of a highly rigid frame, and the rear end portion of the front door frame 41 is superposed on the front end portion 53c of the rear door frame 53 from outside, so that the strength and rigidity of the side of the vehicle body are improved. Is greatly increased, and there is an advantage that it can greatly contribute to improvement of safety at the time of a side collision.

The rear door 50 is connected to the front door 40.
The front door 40 has a structure that does not close unless the rear door 50 is closed, so that the rear door 50 does not open during traveling, There is also the advantage of high security. In addition, there is an advantage that the occupant's getting on and off can be improved by forming the front door 40, which is a main door at the time of getting on and off of the occupant, large.

Further, since the skeletal members constituting the vehicle body 1 and the skeletal members constituting the front door 40 and the rear door 50 are formed by extruding aluminum, the weight of the vehicle can be reduced. There are advantages too. Further, the impact bar portion 42a is integrally formed with the front door 40, and it is not necessary to attach the impact bar as a separate member. Therefore, the number of parts can be reduced, and the number of attachment steps can be reduced. There are advantages too.

Further, since the rear door 50 is provided on the side surface of the vehicle body 1 and luggage can be put in and out of the luggage compartment from the rear door 50, there is no need to mount a back door (gate), and the back door can be freely opened and closed. Since the strength and rigidity of the vehicle body 1 are not reduced, there is also an advantage that the vehicle body 1 can be further strengthened. Also,
Since the luggage can be easily taken in and out from the rear door 50, there is no need to provide a back door (door on the rear side of the vehicle body), and there is an advantage that the number of parts can be reduced and the vehicle body structure can be simplified. In this case, there is an advantage that the cost can be reduced by reducing the number of parts.

In the vehicle body structure of the present embodiment, the diagonal member 4 as the front skeleton portion is provided as a separate member from the side member upper 3 as the upper member of the vehicle body side skeleton member. Alternatively, the shape of the side member upper 3 and the side member lower 2 may be changed so that a part thereof functions as the oblique member 4 as the front skeleton.

In the vehicle body structure of the present embodiment, the rear end portions 3b, 3b of the side member uppers 3, 3 constitute a rear skeleton portion, and the rear skeleton portion is formed as a vehicle body side frame member. Although it is formed integrally with the side member uppers 3, 3 as the upper member, a separate member may be provided as the rear frame portion. Further, the vehicle body structure of the present embodiment is described as being used for an electric vehicle, but is not limited to this, and can be used for a normal vehicle.

In the vehicle body structure of the present embodiment, the rear part of the vehicle interior is a luggage compartment, but a rear seat may be provided. In this case, since both the front door 40 and the rear door 50 can be opened, the ease of getting on and off the rear seat can be improved. Further, the material of the vehicle body structure of the present embodiment is not limited to an aluminum-based material, and various materials can be applied. However, a material having good moldability such as an aluminum-based material is preferable.

The front end 53 of the rear door frame 53
a is that the size of the cross section is increased to increase the cross-sectional characteristics and increase the rigidity, but the front end 53
The increase in rigidity of a is not limited to this, and it is also conceivable to increase the thickness of this portion or to partially use a material having higher rigidity.

[0067]

As described in detail above, according to the vehicle body structure of the present invention, the skeleton of the side opening is constituted by the upper member and the lower member of the body side frame member. Thus, while the strength and rigidity of the vehicle body can be ensured, there is an advantage that the side opening of the vehicle body can be widened and the occupant's getting on and off can be improved by using the double door. . According to the vehicle body structure of the present invention described in claim 2, there is an advantage that the rear door does not open during traveling and safety is high.

According to the vehicle body structure of the present invention, since the strength and rigidity of the vehicle body side can be increased, there is an advantage that the safety at the time of a side collision can be improved. According to the vehicle body structure of the present invention, since the strength and the rigidity of the vehicle body side portion can be further increased, there is an advantage that the safety at the time of a side collision can be surely enhanced.

According to the vehicle body structure of the present invention as set forth in claim 5, there is an advantage that the rear door does not open during running and safety is high. According to the vehicle body structure of the present invention described in claim 6, there is an advantage that the occupant's getting on and off can be improved by forming a large front door which is a main door when the occupant gets on and off.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing a state where a door is attached to a vehicle body in a vehicle body structure according to an embodiment of the present invention.

FIGS. 2A and 2B are schematic views showing a front door in a vehicle body structure according to an embodiment of the present invention, wherein FIG. 2A is a front view thereof, and FIG. 2B is a side view thereof [FIG. FIG.

FIG. 3 is a schematic side view showing a rear door in a vehicle body structure according to an embodiment of the present invention.

FIG. 4 is a schematic view for explaining a stopper mechanism and a stopper mechanism releasing means in the vehicle body structure according to the embodiment of the present invention, and is a cross-sectional view taken along the line AA of FIG.

5 is a schematic view showing a closed state of a front door and a rear door in a vehicle body structure according to an embodiment of the present invention, and is a cross-sectional view taken along the line BB of FIG. 1;

FIG. 6 is a schematic view for explaining a door lock mechanism and a door lock release mechanism in the vehicle body structure as one embodiment of the present invention, and is a cross-sectional view taken along the line CC of FIG. 1;

FIG. 7 is a schematic exploded perspective view for explaining a vehicle body in a vehicle body structure according to an embodiment of the present invention.

FIG. 8 is a schematic diagram for explaining a side member lower as a lower member of a vehicle body side frame member of a vehicle body structure according to an embodiment of the present invention.

FIG. 9 is a schematic diagram for explaining a battery storage portion that forms a floor portion of the vehicle body structure according to the embodiment of the present invention.

FIG. 10 is a schematic diagram for explaining a mounting structure of a panel, glass, and the like in a vehicle body structure according to an embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Vehicle body 2 Side member lower (lower member of vehicle body side frame member) 2a Front end of side member lower 2b Rear end of side member lower 3 Side member upper (upper member of vehicle body side frame member) 3a Side member upper Front end 3b Rear end of side member upper (rear skeleton) 3A Flange of side member upper 4 Diagonal member (front skeleton) 5-11 Cross member (skeletal member) 12 Battery storage unit (skeletal member) 12a Floor Surface 12b, 12c, 12d Extruded material 13 Chassis member (frame member) 13a Front end of chassis member 13b Rear end of chassis member 14 Front cross member (frame member) 14a Upper end of front cross member 15 Rear cross member (frame member) 15a Rear Upper end of cross member 16 Connecting member 17 Rear floor Freon G, 18, 19, 20 Flange member 22 Rear floor rear 23-26 Roof cross member (Frame member) 27 Cross member (Frame member) 28 Windshield 29 Roof panel 29A Roof panel flange portion 30 Rear glass 31 Rear door 31A Rear panel flange portion 32 To 36 coupling member 37 adhesive 38, 39 molding 40 front door 41 front door frame (frame member) 41a upper frame of front door frame 41b lower frame of front door frame 42 front door body frame (frame member) 42a impact bar portion 43 Latch / Striker (door lock mechanism) 44 Front door door knob (door lock release mechanism) 45 Inner handle (door lock release mechanism) 46 Front door glass 47 Outer plate 5 0 Rear door 51, 52 Hinge 53 Rear door frame (frame member) 53a Upper frame of rear door frame 53b Lower frame of rear door frame 53c Linear portion of rear door frame 54 Outer plate 55 Glass for rear door 57 Engaging member (stopper mechanism) 57a Projecting portion 57b Spring 57c Case 57d Inclined surface 57e Outer surface 58 Stopper member (stopper mechanism) 58a Inclined surface 58b Inner surface 59 Weather strip 60 Bracket 61 Latch pin (door lock mechanism) 62 Door knob for rear door (stopper mechanism releasing means) 63, 64 Hinge 65 Wire 70 Double door

Claims (6)

[Claims] 1. An automobile body structure comprising a skeletal member over the entire body, wherein a side opening formed by a side skeletal member of the vehicle body and a front end portion formed by a front skeleton forming the side opening. Are provided with a double door that comprises a front door attached via a hinge and a rear door attached to the rear skeleton forming the side opening through a hinge at the rear end via a hinge. The vehicle body structure. 2. The vehicle body side frame member is formed by combining an upper member and a lower member. The rear door is provided at an upper end and a lower end of the rear door, and the rear door is connected to the upper member and the lower member. 2. The vehicle according to claim 1, further comprising a stopper mechanism fixed to the member in a closed state, and stopper mechanism releasing means connected to the stopper mechanism to release the fixing to the side opening. For body structure. 3. The front door and the rear door are configured such that a rear end of the front door overlaps a front end of the rear door from outside when the front door and the rear door are closed. Or a vehicle body structure according to 2. 4. The vehicle body structure according to claim 3, wherein a front end of the rear door is formed of a highly rigid frame. 5. A door lock mechanism for fixing the rear end of the front door to a front end of the rear door with the rear door closed, a door lock release mechanism for releasing the door lock mechanism. The vehicle body structure according to any one of claims 1 to 4, wherein a vehicle body structure is provided. 6. The front door according to claim 1, wherein the front door is formed larger than the rear door.
6. The vehicle body structure according to any one of claims 5 to 6.