JP6269047B2 - Body structure - Google Patents

Description

  The present invention relates to a vehicle body structure that can handle a plurality of vehicle types having different vehicle lengths.

  In recent years, with the aim of improving fuel economy, eliminating traffic jams in urban areas, and solving parking shortages, development has been progressing toward the practical use of ultra-compact vehicles (so-called ultra-compact mobility) that are even smaller than light vehicle standards. ing. What is required of such ultra-compact vehicles is not only small, but also naturally requires vehicle performance, such as ensuring strength according to the assumed usage situation, and is also required to control vehicle prices. The

In order to achieve both the securing of the vehicle body performance and the suppression of the vehicle price, it is effective to suppress the manufacturing cost by sharing the vehicle parts. In particular, sharing the platform, which is a basic component of the vehicle body structure, with a plurality of vehicle types greatly contributes to the reduction of manufacturing costs.
As such a technology, for example, Patent Document 1 discloses that a truck chassis frame is divided into four units, a front part, a length adjusting part, a suspension part, and a rear part, from the front, and designed for each unit as necessary. It is described to change.

  Patent Document 2 discloses that a chassis frame structure for an electric vehicle includes a three-section section including a front section for accommodating and mounting an operation unit, a center section for placing a living unit, and a rear section for accommodating and mounting a drive unit. A chassis frame structure for an electric vehicle is described. It also describes that it can be used as a chassis frame that can be used for a plurality of vehicle types by changing the size of the center section so that it can be replaced.

JP 2005-212688 A JP 2006-44400 A

  As described in Patent Documents 1 and 2, the chassis frame is divided into front and rear parts, and a part of the chassis frame is changed, so that parts related to the chassis frame can be shared by a plurality of vehicle types. Can be applied to the basic components (platforms) of the body of multiple vehicles with different vehicle lengths. However, the techniques of Patent Documents 1 and 2 are all applied to other vehicle types by changing some parts, and there is a limit to the change of the vehicle length.

  For example, in the technique of Patent Document 2, the length of the vehicle body can be shortened by shortening the center section on which the resident unit is placed. Because there is, there is a limit to changing the car length short. Therefore, when this technology is applied to sharing parts between a micro car and a larger ordinary car or light car, the front and rear length of the micro car cannot be made sufficiently small. That is, there is a limit to the change in vehicle length in the configuration in which the operation unit, the living unit, and the drive unit are divided.

The present invention was devised in view of the above-mentioned problems, and is capable of sharing a vehicle body portion between an ultra-compact vehicle and a larger vehicle model while securing a necessary living space. The purpose is to provide a structure.
The present invention is not limited to this purpose, and is a function and effect derived from each configuration shown in the embodiments for carrying out the invention described later, and other effects of the present invention are to obtain a function and effect that cannot be obtained by conventional techniques. Can be positioned.

(1) In order to achieve the above object, the vehicle body structure of the present invention includes a front module that constitutes a part including a place where a front wheel is disposed from a vehicle front end part to a toe board arrangement part, and a first seat. The center module that constitutes the location of the first floor panel that is disposed, and the location of the rear wheel that extends from the portion of the second floor panel where the second seat is disposed to the rear end of the vehicle A rear module that constitutes a portion including the front module, the center module, and the rear module are divided, and the rear end portion of the front module and the front end portion of the center module are coupled to each other. And a first configuration in which a rear end portion of the center module and a front end portion of the rear module are coupled, and the center module is not used. , A second configuration and in which the front end of the rear end portion of the front module rear module is coupled, is applicable configured selectively in said first configuration, said first floor panel An under-seat floor portion on which the first seat is disposed, a front-end flange-like portion formed at the front end and positioned below the under-seat floor portion, and formed at the rear end than the under-seat floor portion. A rear end flange-shaped portion located above, a first floor rising portion rising from the front end flange-shaped portion toward the seat lower floor portion, and rising from the seat lower floor portion toward the rear end flange-shaped portion A second floor rising portion, and the first floor rising portion is arranged at a connecting portion between a rear end portion of the front module and a front end portion of the center module. Is, the second floor rising portion is characterized in that it is arranged on the coupling portion between the front end of the rear end portion of the center module rear module.
“Selectively applicable” means a structure in which the rear end of the front module is connectable to the front end of the center module and the front end of the rear module, and the front end of the rear module is connected to the center module. This means that the rear end of the front module and the rear end of the front module can be coupled.

( 2 ) It is preferable that the rear module is provided with a battery arrangement place where a battery is arranged and a traveling motor that operates using electric power of the battery.
( 3 ) The front module is provided with an engine placement location where the engine is placed, and the center module is provided with a fuel tank placement location where a fuel tank for supplying fuel to the engine is placed. It is preferable.

( 4 ) In the second configuration, a connection panel that connects the rear portion of the toe board and the second floor panel is provided at a joint portion between the rear end portion of the front module and the front end portion of the rear module. It is preferable.
( 5 ) It is also preferable that a crash box is coupled to the front end portion of the front module.

  According to the vehicle body structure of the present invention, the rear end portion of the front module and the front end portion of the center module are coupled, and the rear end portion of the center module and the front end portion of the rear module are coupled to each other. A vehicle body configuration (first configuration) having a longitudinal length can be obtained. Further, by combining the rear end portion of the front module and the front end portion of the rear module, a vehicle configuration (second configuration) that is shorter than the first configuration by the length of the center module is obtained. be able to.

In this way, a vehicle body for a small vehicle having a short front-rear length can be configured using the vehicle body portion, so that sufficient vehicle body performance is ensured by utilizing the strength of the vehicle body having a relatively front-rear length. The vehicle price can be suppressed by sharing the vehicle body part .

BRIEF DESCRIPTION OF THE DRAWINGS The structure (1st structure) of the vehicle body structure concerning one Embodiment of this invention is shown, (a) is the side view, (b) is the exploded view. It is a side view which shows the structure (2nd structure) of the vehicle body structure of the microminiature vehicle using the vehicle body structure concerning one Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the embodiment described below is merely an example, and there is no intention to exclude various modifications and technical applications that are not explicitly described in the following embodiment.
In the following description, front and rear indicate front and rear of the vehicle, and left and right indicate left and right of the vehicle facing forward.

〔Constitution〕
As shown in FIG. 1B, the basic structural part (platform) 10 of the vehicle body according to the present embodiment is divided into a front module 11, a center module 12, and a rear module 13. Each module 11-13 is comprised from the front-back direction members, such as a left-right side member, and the vehicle width direction members, such as a cross member or a panel member, which mutually connect these front-back direction members, and each member presses a steel plate. It is bent by molding or the like. Moreover, as for any module 11-13, the front-back direction member and the vehicle width direction member are couple | bonded beforehand and assembled. In the case of the present embodiment, a crash box 14 that is crushed in the vehicle front-rear direction and absorbs collision energy at the time of a collision is coupled to the front portion of the front module 11, and a front bumper (not shown) is provided at the front end of the crash box 14. ing.

  As shown in FIG. 1A, the crash box 14, the front module 11, the center module 12, and the rear module 13 are coupled in this order from the front of the vehicle, whereby the configuration according to the present embodiment. A vehicle body (in particular, a basic component (platform)) 10 having the (first configuration) is formed. That is, the rear end portion 14r of the crash box 14 and the front end portion 11f of the front module 11 are coupled, the rear end portion 11r of the front module 11 and the front end portion 12f of the center module 12 are coupled, and the rear end of the center module 12 The portion 12r and the front end portion 13f of the rear module 13 are coupled.

  Each connection is made at least between the respective front and rear members, both of which are welded. Therefore, in each joint part, it forms so that the principal part of the front-back direction member couple | bonded may overlap partially. If the front side member that is the front-rear direction member of the front module 11 and the side member that is the front-rear direction member of the center module 12 have the same cross-sectional shape, for example, a U-shaped cross-sectional shape, the front module 11 Each surface of the side member of the center module 12 is overlapped with each of the U-shaped inner side surface or outer side surface of the front side member.

  Further, the rear end portion 11r of the front module 11 and the front end portion 13f of the rear module 13 are formed so as to be directly connectable. That is, the front-rear direction member of the front module 11 and the front-rear direction member of the rear module 13 are formed so as to partially overlap each other, and the two are joined by welding to the overlapping part. If the front side member that is the front and rear direction member of the front module 11 and the rear side member that is the front and rear direction member of the rear module 13 have the same cross-sectional shape, for example, a U-shaped cross-sectional shape, the front module 11 Each surface of the rear side member of the rear module 13 is overlapped with each of the U-shaped inner surface or outer surface of the side member.

That is, when coupled so as to overlap, the rear end portion 11r of the front module 11 and the rear end portion 12r of the center module 12 have the same shape, and the front end portion 12f of the center module 12 and the front end portion 13f of the rear module 13 have the same shape. I just need it.
Here, each module 11-13 is further demonstrated.
The front module 11 is a portion that extends from the front end of the vehicle body to a portion below the portion where the toe board 22 is disposed (toe-board disposed portion), and includes a portion where the front wheel 1 is disposed (front wheel disposed portion). Is configured. The front module 11 is located below the portion where the toe board 22 is arranged (toe board arranging portion) and extends horizontally in the front-rear direction, and rises obliquely upward in front of the front rear portion 11c. A front inclined portion 11b, and a front front portion 11a that is located inside the front wheel disposition portion where the front wheel 1 is disposed and extends horizontally in the front-rear direction toward the front end of the vehicle in front of the front inclined portion 11b. Have.

  The center module 12 constitutes a place where a floor panel (second floor panel) 23 on which a front seat (first seat) 31 is installed is disposed. That is, the center module 12 is positioned below the floor panel 23 and extends horizontally in the front-rear direction, and supports the floor panel 23. The front seat 31 is installed above the floor panel 23.

  The rear module 13 is a part extending from the lower part of the rear floor panel (second floor panel) 24 where the rear seat (second seat) 32 is disposed to the rear end of the vehicle. A portion including a portion where the wheel is disposed (rear wheel placement portion) is formed. The rear module 13 includes a rear front portion 13a that is located below a portion (rear seat seat installation portion) where the rear seat 32 is installed and extends horizontally in the front-rear direction, and below the rear seat installation portion. A rear inclined portion 13b that rises obliquely upward to the rear of the rear front portion 13a, and a rearward direction in the rearward direction of the rear inclined portion 13b that is positioned inside the rear wheel arrangement portion where the rear wheel 2 is arranged. A rear rear portion 13c extending horizontally toward the rear.

  In addition, a region (engine placement location) 11E in which the engine 3 is disposed is provided in the front front portion 11a of the front module 11, and a fuel tank 4 for supplying fuel to the engine 3 is disposed in the center module 12. A region (fuel tank arrangement location) 12T is provided. The engine 3 is an internal combustion engine, and may be a gasoline engine or a diesel engine, regardless of the type.

  Further, the rear front portion 13a and the rear inclined portion 13b of the rear module 13 are provided with a region (battery placement location) 13B in which the battery 5 is disposed, and the rear rear portion 13c of the rear module 13 receives power from the battery 5. An area (motor arrangement location) 13M is provided in which the traveling motor 6 that is used to drive the rear wheel 2 is arranged with its axis oriented in the vehicle width direction. The traveling motor 6 performs regenerative power generation when the vehicle is regenerated, and this generated power is used for charging the battery 5. Note that an inverter (not shown), an in-vehicle charger, a DC-DC converter, and a control device for controlling them are arranged in the vicinity of the traveling motor 6.

  In addition, a dash panel 21 is installed above the front inclined portion 11b of the front module 11 with the lower portion inclined so as to follow the upper module 11b and the upper portion rising substantially vertically. The toe board 22 is horizontally installed backward from the lower end of the dash panel 21. A floor panel 23 is installed behind the toe board 22 and above the center module 12, and a rear floor panel 24 is installed behind the floor panel 23 and above the rear module 13.

  The dash panel 21 and the toe board 22 may be assembled to the front module 11 in advance, the floor panel 23 may be assembled to the center module 12 in advance, and the rear floor panel 24 may be assembled to the rear module 13 in advance. 23 and the rear floor panel 24 may be retrofitted to the modules 11, 12, and 13.

  The floor panel 23 rises toward the rear seat lower floor portion 23a from the front end portion 23b, the front end flange portion 23b that overlaps with the toe board 22, and the lower seat floor portion 23a on which the front seat 31 is installed. A first floor rising portion 23c, a second floor rising portion 23d rising rearward from the under-seat floor portion 23a, a rear end flange-like portion 23e overlapping with the rear floor panel 24 behind the second floor rising portion 23d, have.

  The floor panel 23 is disposed above the center module 12 so as to be approximately aligned with the front and rear positions of the center module 12. Accordingly, the first floor rising portion 23c is disposed at the front and rear positions in accordance with the connecting position between the front end portion 12f of the center module 12 and the rear end portion 11r of the front module 11, and the second floor rising portion 23d is disposed at the rear of the center module 12. They are arranged at the front and rear positions in accordance with the joint location between the end 12r and the front end 13f of the rear module 13.

The under-seat floor portion 23a also functions as a foot space for the rear seat occupant. A rear seat 32 is installed above the front portion of the rear floor panel 24.
Then, by providing the first floor rising portion 23c and making the lower seat floor portion 23a higher than the toe board 22, the region (fuel tank placement location) 12T below the lower seat floor portion 23a expands in the vertical direction. The installed fuel tank 4 has a large size and a large capacity, and its installation flexibility can be increased. Further, the seat surface of the front seat 31 can be set to an appropriate height with respect to the toe board 22 without depending on the stroke of the leg portion of the front seat 31.

  Furthermore, by providing the second floor rising portion 23d and making the rear floor panel 24 higher than the under-seat floor portion 23a, the area below the rear floor panel 24 (battery placement location 13B and motor placement location 13M) expands in the vertical direction. Therefore, the battery 5 to be installed has a large size and a large capacity, and the degree of freedom in installation can be increased. In addition, the height can be set to an appropriate height in consideration of the seating surface of the rear seat 32 and the foot space of the rear seat occupant without depending on the stroke of the legs of the rear seat 32.

[Action, Effect]
Since the vehicle body structure according to the present embodiment is configured as described above, a hybrid electric vehicle can be configured using the platform 10. For example, if the output shaft of the engine 3 is connected to the front wheels 1 via a transmission (not shown) and the front wheels 1 are driven by the engine 3, the parallel hybrid electric vehicle in which the front wheels 1 are driven by the engine and the rear wheels 2 are driven by the motor. Can be configured. Further, if the output shaft of the engine 3 is connected to a generator (not shown) and the battery 5 is charged with power generated by the generator, the rear wheel 2 can constitute a motor-driven series hybrid electric vehicle. .

In addition, the platform 10 can be partially used to configure a micro-sized vehicle having a significantly short wheel base, that is, a vehicle length that is significantly short.
[Sharing the basic components of the vehicle body (platform)]
As shown in FIG. 2, the center module 12 is not used, and the vehicle using the center module 12 (second vehicle) is used as the configuration in which the front module 11 and the rear module 13 are directly coupled (second configuration). On the other hand, the vehicle body (microcar platform) 110 having a short wheelbase by the length of the center module 12 can be configured.

As described above, since the rear end portion 11r of the front module 11 and the front end portion 13f of the rear module 13 are formed so as to be connectable, such a platform 110 for a micro vehicle can be configured without any trouble.
In the microcompact shown in FIG. 2, the front wheel 101 for the microcompact car is disposed at the front front portion 11 a of the front module 11, but the engine 3 is omitted. Above the portion of the rear module 13 from the rear front portion 13a to the rear inclined portion 13b is a portion where the front seat 131 is installed (front seat seat installation portion).

That is, in the reference vehicle shown in FIG. 1, the part where the rear seat 32 is installed (the rear seat installation part) is used as the front seat installation part. Therefore, the seat of this microcompact vehicle is only the front seat 131 (one line in the front and rear).
Further, a battery 105 for a micro car is arranged at the battery arrangement place 13B of the rear front part 13a and the rear inclined part 13b of the rear module 13, and the car is arranged at a motor arrangement part 13M of the rear rear part 13c of the rear module 13. A traveling motor 106 is disposed.

  A dash panel 121 is installed above the front inclined portion 11b of the front module 11 so that the lower portion thereof is inclined along the same and the upper portion stands substantially vertically. The toe board 122 is horizontally installed backward from the lower end of the dash panel 121. A floor panel 124 is installed behind the toe board 122 and above the rear module 13.

  A connection panel 123 is disposed between the toe board 122 and the floor panel 124. The connection panel 123 includes a front end flange portion 123a that overlaps with the toe board 122, a floor rising portion 123b that rises rearward from the front end portion 123a, and a rear end flange that overlaps with the floor panel 124 behind the floor rising portion 123b. Shaped portion 123c.

The connection panel 123 replaces the floor panel 23 of the reference vehicle and can be said to be obtained by removing the under-seat floor portion 23a of the floor panel 23. The floor rising portion 123b is connected to the first floor rising portion 23c of the floor panel 23 and the first floor rising portion 23c. It can also be said that the two-floor rising part 23d is continuous.
As for the dash panel 121, the toe board 122, and the floor panel 124, the dash panel 21, the toe board 22, and the rear floor panel 24 of the reference vehicle can be shared.

Also in this case, the dash panel 121 and the toe board 122 may be assembled to the front module 11 in advance, and the connection panel 123 and the floor panel 124 may be assembled to the rear module 13 in advance. The dash panel 121, the toe board 122, the connection panel 123, and the floor panel may be assembled. 124 may be retrofitted to each of the modules 11 and 13.
Further, in the case of this ultra-compact vehicle, the crash box 14 is not equipped, but this is assumed only by providing a front bumper (not shown) without the crash box 14 because the skeleton member of the reference vehicle is shared by the ultra-compact vehicle. This is because it can withstand a collision load.

  In this way, the platform for a small vehicle 110 having a short front and rear length can be configured by using the platform 10 for the reference vehicle, so that the vehicle body performance for the small vehicle can be sufficiently obtained by using the strength of the platform 10 for the reference vehicle. While ensuring, the cost reduction effect by sharing the basic components (platform) of the vehicle body can reduce the vehicle price of small cars.

In addition, since the rear seat setting portion of the reference vehicle is applied to the front seat setting portion of the ultra-compact vehicle, the front-rear length can be sufficiently reduced while ensuring the living space of the ultra-compact vehicle.
[Other vehicle configuration examples]
After securing the battery capacity by using the vehicle body 10 of the reference vehicle shown in FIG. 1 without mounting the engine 3 and mounting an additional battery in place of the fuel tank 4 at the fuel tank placement location 12T. A wheel drive electric vehicle can also be configured.

  Furthermore, the vehicle 10 of the reference vehicle can be used to form a front-wheel drive engine-driven vehicle in which the vehicle is driven only by the engine 3 without mounting the motor 6 and the battery 5. In this case, since the area below the rear floor panel 24 (battery placement location 13B and motor placement location 13M) is vacant, the fuel tank is placed in this portion, the first floor rising portion 23c of the floor panel 23 is abolished, and the floor under the seat If the floor of the portion 23a is lowered, the foot space of the rear seat can be expanded. However, the step of the second floor rising portion 23d is enlarged.

[Others]
As mentioned above, although embodiment concerning the vehicle body structure of this invention was described, this invention is not limited to this embodiment, In the range which does not deviate from the meaning of this invention, said embodiment is changed suitably and implemented. can do.
For example, in the above embodiment, the crash box 14 is coupled to the front of the front module 11, but the crash box 14 can be omitted if only the front module 11 can take measures against collision.

  In the above embodiment, the front module 11 and the center module 12, the center module 12 and the rear module 13, and the front module 11 and the rear module 13 are combined. Although they are directly welded using spot welding, they may be joined via a connecting member or the like, or may be joined by means other than welding such as fastening using bolts or nuts.

  Although it is extremely effective for the practical application of a micro car (so-called micro mobility) in an automobile, the present invention is not limited to this, and can be widely applied to the sharing of a vehicle body part among car types having greatly different vehicle lengths.

DESCRIPTION OF SYMBOLS 1 Front wheel 2 Rear wheel 3 Engine 4 Fuel tank 5 Battery 6 Motor 10 Vehicle body (basic component (platform) of vehicle body)
11 Front module 11E Engine placement location 12 Center module 12T Fuel tank placement location 13 Rear module 13B Battery placement location 13M Motor placement location 14 Crash box 21 Dash panel 22 Toe board 23 Floor panel 23c First floor rising portion 23d Second floor rising portion 24 Rear floor panel 31 Front seat 32 Rear seat 110 Body for ultra-compact vehicles (platform for ultra-compact vehicles)

Claims (5)

A front module constituting a portion including a front wheel arrangement portion extending from a vehicle front end portion to a toe board arrangement portion;
A center module that constitutes the location of the first floor panel where the first sheet is disposed;
A rear module constituting a portion including a rear wheel arrangement portion extending from the arrangement portion of the second floor panel on which the second seat is arranged to the rear end portion of the vehicle;
The front module, the center module, and the rear module are each divided.
A first configuration in which a rear end portion of the front module and a front end portion of the center module are coupled, and a rear end portion of the center module and a front end portion of the rear module are coupled;
The second configuration in which the rear end portion of the front module and the front end portion of the rear module are coupled without using the center module is configured to be selectively applicable ,
In the first configuration,
The first floor panel is
A lower-seat floor portion on which the first seat is disposed, a front-end flange-like portion formed at the front end and positioned below the lower-floor floor portion, and a rear-end upper portion formed above the lower-seat floor portion. A rear end flange-like portion located at the front end, a first floor rising portion rising from the front end flange-like portion toward the lower seat floor portion, and a rear end rising from the lower seat floor portion toward the rear end flange-like portion A second floor rising portion,
The first floor rising portion is disposed at a connecting portion between a rear end portion of the front module and a front end portion of the center module,
2. The vehicle body structure according to claim 1, wherein the second floor rising portion is disposed at a joint portion between the rear end portion of the center module and the front end portion of the rear module . Wherein the rear module, characterized in that the battery arrangement position where the battery is placed, a traction motor that runs using the power of the battery, is provided, the vehicle body structure of claim 1, wherein. The front module is provided with an engine placement location where the engine is placed,
Wherein the center module, wherein the fuel tank arrangement position where the fuel tank for the fuel supply to the engine is disposed is provided, according to claim 1 or 2 vehicle body structure according. In the second configuration,
The connection portion that connects the rear portion of the toe board and the second floor panel is provided at a joint portion between the rear end portion of the front module and the front end portion of the rear module. 1. The vehicle body structure according to 1. The vehicle body structure according to any one of claims 1 to 4 , wherein a crash box is coupled to a front end portion of the front module.

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