KR20110116528A - Automobile - Google Patents

Abstract

An automobile according to an embodiment of the present invention includes a rear floor formed of a rear side floor on which a passenger rides and a light metal material, and a rear side member provided on both sides of the rear floor and fastened to the rear floor by a fastening means. An adhesive applied between the cover, the rear side member cover and the rear floor to bond the rear side member cover and the rear floor, and provided on the lower side of the rear side member cover to support the rear side member cover and on both sides of the rear floor. It is comprised including the rear side member provided.

Description

Car {Automobile}

The present invention relates to a vehicle, and more particularly, to a vehicle that can reduce the weight of the vehicle body to improve fuel economy and shorten the assembly process.

A car is a means of transporting passengers or cargo on the road by generating power from its engine and delivering it to the wheels. Automobiles can be divided into a chassis (body) and the various devices that are organically connected to form a large appearance. The chassis includes the main engines such as power transmission, steering, suspension and braking, as well as the automobile engine that drives driving.

The engine is the driving force for running the automobile. Most automotive engines are four-stroke internal combustion engines. A four-stroke internal combustion engine is an internal combustion engine that finishes one cycle by four strokes of intake, compression, explosion, and exhaust, and is the most common example of a reciprocating engine. Internal combustion engines, which mainly use volatile fuels, compress the fuel in a well-mixed state to achieve complete combustion with oxygen in the air, and then directly obtain the kinetic energy by using the thermal energy generated by the combustion.

Internal combustion engines using these volatile fuels have caused environmental pollution and exhaustion of petroleum resources due to exhaust gas, and as an alternative, electric vehicles powered by electricity have emerged.

Electric vehicles (EVs) are mainly powered by AC or DC motors using battery power, and are mainly classified into battery-only electric vehicles and hybrid electric vehicles. Using a motor to drive and recharging when the power is exhausted, the hybrid electric vehicle can run the engine to generate electricity to charge the battery and drive the electric motor using this electricity to move the car.

In addition, hybrid electric vehicles can be classified into a series and a parallel method, in which the mechanical energy output from the engine is converted into electrical energy through a generator, and the electrical energy is supplied to a battery or a motor so that the vehicle is always driven by a motor. It is a concept of adding an engine and a generator to increase the mileage to an existing electric vehicle, and the parallel method can drive a vehicle with a battery power and drive two vehicles only with an engine (gasoline or diesel). In parallel, depending on the driving conditions, the engine and the motor may drive the vehicle simultaneously.

Even in such electric vehicles, the vehicle body uses the vehicle body of the existing vehicle. In the case of the existing vehicle, in order to construct a vehicle body, a steel panel is raised and welded to the steel frame, and there is a problem in that fuel economy falls due to the weight of the steel frame and the steel panel.

The problem to be solved by the present invention is to provide a vehicle that can reduce the weight of the vehicle body to improve fuel economy, and the assembly process can be shortened.

The objects of the present invention are not limited to the above-mentioned objects, and other objects that are not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, an automobile according to an embodiment of the present invention,

A rear floor including a light metal material and forming a rear bottom at which the occupant rides; Rear side member covers provided on both sides of the rear floor and fastened to the rear floor by fastening means; An adhesive applied between the rear side member cover and the rear floor to bond the rear side member cover and the rear floor; And a rear side member provided below the rear side member cover to support the rear side member cover and provided on both sides of the rear floor. It includes.

Specific details of other embodiments are included in the detailed description and the drawings.

According to the vehicle of the present invention has one or more of the following effects.

First, as the rear floor is formed of a light metal material, the weight of the vehicle may be realized, thereby reducing fuel efficiency.

Second, tightening of the rear side member cover and the rear floor is made more secure by the rivets.

Third, by forming the guide hole in the rear floor in advance, it is easy to check the coupling position of the rear floor and the rear side member cover during manual operation.

Fourth, the undercoat through the undercoat process for waterproofing is formed, it is possible to prevent corrosion of the fastening portion of the rear side member cover and the rear floor.

Fifth, since the escape hole is formed in advance in the rear side member by the pressing process, the guide hole is formed only in the rear side member cover during the operation of the rear floor and the rear side member assembly, thereby shortening the assembly process.

The effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a schematic diagram illustrating a vehicle body of a vehicle according to an embodiment of the present invention.
2 and 3 are partially exploded perspective views showing a vehicle according to an embodiment of the present invention.
4 is a perspective view showing a rear vehicle body of a vehicle according to an embodiment of the present invention.
5 is a cross-sectional view taken along the line AA ′ of FIG. 4.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms, and only the embodiments make the disclosure of the present invention complete, and the general knowledge in the art to which the present invention belongs. It is provided to fully inform the person having the scope of the invention, which is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

Hereinafter, the present invention will be described with reference to the drawings for describing an automobile according to embodiments of the present invention.

1 is a schematic diagram illustrating a vehicle body of a vehicle according to an embodiment of the present invention. 2 and 3 are partially exploded perspective views showing a vehicle according to an embodiment of the present invention.

The vehicle according to an embodiment of the present invention, the front vehicle body 100, which is equipped with the motor and the components of the power transmission system, and the central vehicle body 200, spare tires and other objects that can be seated and occupied by passengers can be stored. It includes a rear vehicle body 300 that can be.

The vehicle bodies 100 to 300 form a closed space, arrange various devices therein, and accommodate occupants or cargo. It is also necessary to have a structure that can open and close a part to facilitate occupants, cargo access, and maintenance of various devices. It is also important to protect occupants, cargo, and various devices from rain, wind, and dust from the outside. In addition, the vehicle bodies 100 to 300 form an appearance, and the shapes of the vehicle bodies 100 to 300 are in the form of automobiles.

The front vehicle body 100 forms a well well and is provided with a motor and a transmission. The front vehicle body 100 includes a steering device 110 that adjusts the direction of rotation of the front wheel in order to change the traveling direction of the vehicle, and a front wheel suspension device 120 that prevents the vibration of the road surface from directly touching the vehicle body.

The front vehicle body 100 needs to support the front wheel of the front wheel suspension apparatus 120, including the heavy weight of a motor, a transmission, and various auxiliary apparatuses. In addition, the front vehicle body 100 is also responsible for the driving force in the front wheel drive vehicle.

The front vehicle body 100 is broken when the dog is impacted due to an accident or the like to absorb the shock so that a strong force is not transmitted to the cabin. Each part of the front vehicle body 100 is fixed or welded to the front vehicle body with bolts or nuts, and is capable of separating only the outer plate parts such as the front fender and the hood.

The steering device 110 is a device for adjusting the direction of the rotation axis of the front wheel to drive the vehicle in the direction intended by the driver.

The front wheel suspension apparatus 120 supports the front wheel with respect to the vehicle body by appropriate rigidity in directions other than up and down, and supports the up and down direction by a spring and a damping mechanism.

The central vehicle body 200 includes a front floor 210 forming a front bottom, a tunnel 230 provided in the front floor, in which a battery module 410 is mounted, and both side edges of the front floor. The side seal panel 229 to form is included.

Since the central body 200 is mostly a cabin, i.e., a place for occupants, the interior space is increased as much as possible.

The front floor 210 is a panel in the interior of the vehicle with high strength and wide area. Side seal panels 229 serving as bases of the pillars are connected to the left and right of the front floor 210 from front to back. The tunnel 230 is provided at the center of the front floor 210.

The tunnel 230 is led upwardly so that the battery module 410 is mounted. Both sides of the tunnel 230 are coupled to the front floor 210. The tunnel 230 and the front floor 210 are preferably joined by welding. The battery carrier 420 supporting the battery module 410 is coupled to both sides of the lower edge of the tunnel 230. The battery carrier 420 is coupled to the tunnel 230 with a bolt or nut.

The side seal panel 229 may have a rectangular cross-sectional structure, and may include a front pillar (not shown), a center pillar (not shown), or a rear wheel house (not shown). The side seal panel 229 is coupled to both edges of the front floor 210.

The rear vehicle body 300 includes a rear floor 310 forming a rear side bottom. The rear vehicle 300 is provided with a rear wheel suspension 330 to prevent the vibration of the road surface directly touching the vehicle body.

The rear vehicle 300 needs to support the rear wheel of the rear wheel suspension 330. In addition, the rear vehicle 300 is responsible for the driving force in the rear wheel drive vehicle.

The rear wheel suspension 330 supports the rear wheel with respect to the vehicle body by appropriate rigidity in directions other than up and down, and supports the up and down direction by a spring and a damping mechanism.

The battery module 410 supplies a current. The battery module 410 is a plurality of lithium / ion cells are connected. The battery module 410 is formed in a T-shape, and is preferably mounted on the tunnel 230 of the central vehicle body 200 and the rear floor 310 of the rear vehicle body 300.

The battery carrier 420 supports the battery module 410. The battery carrier 420 is preferably coupled to the central vehicle body 200 and the rear vehicle body 300 by bolts or nuts.

4 is a perspective view illustrating a rear vehicle body 300 of a vehicle according to an embodiment of the present invention.

Referring to FIG. 4, a rear body of a vehicle according to an embodiment of the present invention includes a rear floor 310 and a rear floor 310 formed of a plastic material and forming a rear side bottom on which a passenger rides. A rear side member assembly 323 provided at both sides to support the rear floor 310, a reinforcement cross member 325 coupled to an upper portion of the rear floor 310 and disposed in front of a rear cross member (not shown), A back panel 327 coupled to the rear of the rear floor 310, a reinforcement plate 328 coupled to the rear side member assembly 323, and a rear floor 310 having a different height from the front floor 210 are connected to each other. It may be configured to include a rear floor extension (321).

The rear floor 310 forms a floor in the rear side compartment as described above. A rear seat (not shown) on which the occupant sits may be provided on the upper side of the rear floor 310.

The rear floor 310 may form a cargo compartment with the back panel 327. The rear floor 310 forms the bottom of the cargo compartment for storing goods. Since the rear floor 310 forms a floor in the vehicle compartment, the rear floor 310 has a high strength and a wide area. The rear floor 310 is formed to include a light metal material in order to save weight while maintaining strength. The light metal included in the rear floor 310 is a metal having a specific gravity of 4 or less, and includes aluminum, magnesium, beryllium, titanium, an alkali metal and an alkaline earth metal.

The light metal material included in the rear floor 310 is preferably formed of aluminum and may be formed of an aluminum alloy. Hereinafter, the light metal material included in the rear floor 310 is described as being formed by including aluminum, but the light metal may include the above-described light metal and is not limited to aluminum.

Since the rear floor 310 is formed of a light metal material, the weight of the vehicle body is reduced, thereby improving fuel efficiency.

The rear floor 310 is provided with a spare tire mounting portion 340 on which the spare tire is mounted. The rear floor 310 may form a floor of a cargo compartment for storing goods, and the spare tire mounting unit 340 on which the spare tire is mounted may be integrally formed.

The spare tire mounting unit 340 may be provided with a plurality of ribs 341 for increasing the bearing capacity of the spare tire. The rib 341 may protrude to the inside and / or the outside of the spare tire mounting portion 340, and may stably support the spare tire mounted by the rib 341.

The battery module 410 is mounted below the rear floor 310. The front portion of the battery module 410 is mounted to the tunnel 230 and the rear portion is mounted to the rear floor 310. The battery module 410 is mounted in front of the spare tire mounting unit 340 on the rear floor 310. The battery module 410 may be mounted in front of the rear cross member on the rear floor 310.

The rear side member assembly 323 is coupled to both sides of the rear floor 310 in the front-rear direction. The rear side member assembly 323 absorbs shocks in the front and rear directions, supports the vehicle body, and prevents warping and bending. The battery module 410 is mounted between the rear side member assemblies 323.

The rear side member assembly 323 includes a rear side member cover 323-1 and a rear side member 323-2, and these structures and structures coupled to the rear floor 310 will be described later with reference to FIG. 5. .

The rear side member assembly 323 is preferably coupled to the battery carrier 420 without additional components such as brackets. The rear side member assembly 323 has a lower end coupled to the battery carrier 420 with a bolt or nut. The battery carrier 420 may be coupled to a lower side of both edges of the tunnel 230 by bolts or nuts.

The reinforcing cross member 325 is coupled to the top of the rear floor 310. Reinforcing cross member 325 is coupled with rear side member assembly 323. The reinforcing cross member 325, together with the rear cross member, absorbs the impact in the lateral direction and prevents warping and bending. Since the rear cross member is disposed rearward as much as possible in order to secure a space in which the battery module 410 is mounted, the reinforcement cross member 325 is disposed in front of the rear cross member to prevent the torsion of the entire vehicle body and to secure rigidity. It is preferable.

The reinforcing cross member 325 is disposed behind the portion S on which the rear seat (not shown) of the rear floor 310 is mounted to ensure the vehicle space as much as possible. Reinforcing cross member 325 may be provided with a portion of the seat belt used for the rear seat (not shown).

The rear side seal panel 329 is formed by extending the side seal panel 229 or provided separately, and is connected to the reinforcing cross member 325 and the side seal panel 229. The rear side seal panel 329 may be combined with various fillers.

The back panel 327 is coupled to the rear of the rear floor 310. The back panel 327 forms the rear of the cargo compartment and prevents its twist.

The reinforcement plate 328 is coupled with the rear side member assembly 323, and the rear wheel suspension 330 is coupled. The reinforcement plate 328 is formed of a rigid material to fix the rear wheel suspension 330 and is firmly coupled to the rear side member assembly 323.

The rear floor extension 321 connects the rear floor 310 and the front floor 210 having different heights. The center portion of the rear floor extension 321 is preferably formed to be indented so that the battery module 410 is mounted.

5 is a cross-sectional view taken along the line AA ′ of FIG. 4.

Referring to FIG. 5, a vehicle according to an exemplary embodiment of the present invention includes a rear floor 310 and a rear floor 310 formed of a light metal material and formed on a rear floor of a passenger. It is applied between the rear side member cover 323-1 and the rear side member cover 323-1 and the rear floor 310 which are fastened to the rear floor 310 by the fastening means 360, and the rear side member cover. 323-1 and an adhesive that couples the rear floor 310 and a lower side of the rear side member cover 323-1 to support the rear side member cover 323-1, It is comprised including the rear side member 323-2 provided in both sides.

The rear floor 310 forms a rear side bottom on which the occupant rides and is formed by including a plastic material, and the details are the same as those described above.

The rear side member cover 323-1 forms an upper portion of the rear side member assembly 323. The rear side member cover 323-1 is provided on both sides of the rear floor 310 to support the rear floor 310. The rear side member cover 323-1 is fastened to the rear floor 310 by the fastening means 360. The fastening means 360 will be described later.

An adhesive 320 is applied between the rear side member cover 323-1 and the rear floor 310. The adhesive 320 is formed of an adhesive 320 that can couple the rear side member cover 323-1 and the rear floor 310. The adhesive 320 is an insoluble and heat resistant adhesive 320 after curing, and vehicle structural adhesives may be used. The adhesive 320 couples the rear side member cover 323-1 and the rear floor 310. In addition to the structural adhesive 320 described above, the adhesive 320 includes all the adhesives 320 capable of bonding the rear side member cover 323-1 and the rear floor 310 as a non-structural adhesive or a changeable adhesive. .

The rear side member cover 323-1 and the rear floor 310 are fastened by the fastening means 360. Although the fastening means 360 is coupled by the adhesive 320, the fastening means 360 corresponds to a means necessary to compensate for the coupling force in the vertical direction. The fastening means 360 includes all means for fastening the rear floor 310 and the rear side member cover 323-1 in the vertical direction, and is preferably formed of a rivet 360. In addition to the rivet 360, it may be fastened using a bolt and a nut. In addition, it is possible to be fastened by welding capable of joining dissimilar materials between the light metal constituting the rear floor 310 and the steel constituting the rear side member cover 323-1. Hereinafter, the fastening means 360 will be described as rivet 360, but the fastening means 360 is not limited thereto.

In the fastening by the rivet 360, a guide hole (not shown) for fastening the rivet 360 to the rear floor 310 may be additionally formed. The rear side member cover 323-1 and the rear floor 310 are coupled to each other, and penetrate the rear side member cover 323-1 and the rear floor 310 so as to engage the rivet 360 by processing a guide hole. The rivet 360 is fastened to the hole formed to penetrate, thereby additionally fastening the rear side member cover 323-1 and the rear floor 310. The rivet 360 further tightens the rear side member cover 323-1 and the rear floor 310. In addition, by forming the guide hole in advance, it is possible to easily check the coupling position of the rear floor 310 and the rear side member cover (323-1) during manual operation.

Fluid may penetrate the outer surface of the fastening means 360 and an adjacent peripheral portion thereof. In this case, the outer surface of the fastening means 360 and an adjacent peripheral portion thereof are further provided with an undercoat 350 to prevent fluid from penetrating. The undercoat 350 is formed of waterproof means to prevent fluid from penetrating.

When the fastening means 360 fastens the rear side member cover 323-1 and the rear floor 310, a gap between the outer surface of the fastening means 360 and an adjacent peripheral portion thereof may be formed. The outer surface and the rear side member cover 323-1 and / or the rear floor 310 and the fastening means 360 are fastened to each other, and a gap may be formed in the adjacent peripheral portion thereof.

Watertight means are applied to the outer surface of the fastening means 360 and adjacent peripheral portions thereof to prevent fluid from penetrating the gap. Waterproof means include any material that prevents the penetration of fluids, such as rubber, asphalt, silicone composites. The waterproofing means may also be formed of paint seals. As the undercoat 350 is formed by the waterproof means, corrosion of the fastening portion of the rear side member cover 323-1 and the rear floor 310 can be prevented.

The rear side member 323-2 is provided under the rear side member cover 323-1. The rear side member 323-2 supports the rear side member cover 323-1 provided on the upper side, and is provided on both sides of the rear floor 310 in the same manner as the rear side member cover 323-1.

The rear side member 323-2 is provided under the rear side member cover 323-1, and the rear side member cover 323-1 under the rear side member cover 323-1 and the rear floor 310. ) And the rear floor 310. The material of the rear side member 323-2 is formed of a material having a rigidity enough to support the rear side member cover 323-1 and the rear floor 310, and is preferably formed of steel.

The rear floor 310 can be stably supported by the rear side member 323-2 formed of steel.

When the fastening means 360 is fastened to the rear side member 323-2, an escape hole 323-3 is formed to prevent the fastening means 360 from interfering with the rear side member 323-2. The escape hole 323-3 may be formed at one side of the rear side member 323-2 in correspondence to the portion where the fastening means 360 is fastened, and may be formed through the rear side member 323-2. have. Since the escape hole 323-3 is formed, the fastening means 360 is free from interference such as loosening of the fastening due to vibration by the rear side member 323-2. In addition, since the escape hole 323-3 is formed in the rear side member 323-2 in advance by a pressing process, the rear side member cover 323 is formed when the rear floor 310 and the rear side member assembly 323 work. Since only the guide hole should be formed in -1), the assembly process is shortened.

The escape hole 323-3 is further provided with an undercoat 350 to prevent fluid from penetrating. Fluid may penetrate the escape hole 323-3. The undercoat 350 is formed by an undercoating process and is formed of a waterproof means to prevent fluid from penetrating. Waterproofing means is applied to prevent fluid from penetrating into the gap formed between the escape hole 323-3 and the fastening means 360. Waterproof means include any material that prevents the penetration of fluids, such as rubber, asphalt, silicone composites. It may also be formed of paint seals. As the undercoat 350 is formed according to the undercoating process, corrosion of the doped holes 323-3 and the fastening means 360 may be prevented.

Although the above has been illustrated and described with respect to preferred embodiments of the present invention, the present invention is not limited to the specific embodiments described above, but in the art to which the invention pertains without departing from the spirit of the invention as claimed in the claims. Various modifications can be made by those skilled in the art, and these modifications should not be individually understood from the technical spirit or the prospect of the present invention.

100: front body 110: steering device
120: front wheel suspension 200: center body
210: front floor 229: side seal panel
230: tunnel 300: rear body
310: rear floor 321: rear floor extension
323: rear side member assembly 324: rear cross member
325 reinforcement cross member 327 back panel
328: reinforcement plate 329: rear side seal panel
330: rear suspension 340: spare tire mounting portion
410: battery module 420: battery carrier
323-1: Rear Side Member Cover 323-2: Rear Side Member
360: fastening means 320: adhesive
323-3: escape hole 350: undercoat

Claims (7)

A rear floor including a light metal material and forming a rear bottom at which the occupant rides;
Rear side member covers provided on both sides of the rear floor and fastened to the rear floor by fastening means;
An adhesive applied between the rear side member cover and the rear floor to bond the rear side member cover and the rear floor; And
A rear side member provided below the rear side member cover to support the rear side member cover and provided on both sides of the rear floor;
Car including.
The method of claim 1,
The light metal material, the automobile is formed containing aluminum.
The method of claim 1,
The fastening means is a rivet car.
The method of claim 1,
Said adhesive is a structural adhesive.
The method of claim 1,
The rear side member is a vehicle in which the escape hole is formed so that the fastening means does not interfere.
The method of claim 5,
The escape hole is further provided with an undercoat to prevent fluid from penetrating.
The method of claim 1,
An undercoat is further provided to prevent fluid from penetrating the outer surface of the fastening means and an adjacent portion thereof.

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