KR20210060163A - Rear body structure - Google Patents

Abstract

The present invention comprises a rear extension installed on each of both sides of the rear of a vehicle body to form a rear side part of the vehicle body, and a back assembly installed to form a rear lower part of the vehicle body while connecting the lower parts of both rear extensions; the rear extension has an upper end supporting a rear end part of a roof carrier from the lower side, and a middle part is coupled to the rear side of a quarter assembly and a rear side upper of a rear follower assembly; and the back assembly is configured to be coupled to a rear lower side of the rear follower assembly. Therefore, the present invention is capable of being easily assembled.

Description

Rear body structure{REAR BODY STRUCTURE}

The present invention relates to a rear body structure of a vehicle.

In a conventional monocoque vehicle body, a plurality of parts are combined into a complex structure to form a vehicle body, and the shapes and coupling structures of these parts are different for each vehicle model.

Therefore, in order to construct the body of one model, a number of molds are required to manufacture the parts for constructing the body, and the mold cannot be used in common to construct the body of another model, so another group of molds must be produced. do.

In addition, as described above, manufacturing a vehicle body according to a different assembly structure for each model using a plurality of parts is inferior in workability.

The matters described as the background technology of the present invention are only for enhancing an understanding of the background of the present invention, and should not be taken as acknowledging that they correspond to the prior art already known to those of ordinary skill in the art. Will be.

KR 2019980021042 A

An object of the present invention is to provide a rear vehicle body structure capable of securing excellent strength and rigidity while having easy assembling ability in constructing a modularized space frame type vehicle body structure.

The present invention rear vehicle body structure for achieving the above object,

Rear extensions respectively installed on both rear sides of the vehicle body to form a rear side portion of the vehicle body;

A bag assembly installed to form a rear lower portion of the vehicle body while connecting lower sides of the both rear extensions;

Consisting of including,

The rear extension has an upper end supporting a rear end of the roof carrier from a lower side, and an intermediate portion coupled to a rear side of the quarter assembly and a rear side upper of the rear follower assembly;

The bag assembly is characterized in that it is coupled to the rear lower side of the rear follower assembly.

The rear extension is

A rear extension inner panel;

A rear extension outer panel coupled to the outside of the rear extension inner panel;

It can be composed of.

The rear extension inner panel includes a rear extension inner upper panel on an upper side and a rear extension inner lower panel coupled to a lower side of the rear extension inner upper panel;

The rear extension outer panel may include an upper rear extension outer upper panel and a rear extension outer lower panel coupled to a lower side of the rear extension outer upper panel.

The upper end of the rear extension inner panel is coupled to a lower side of the rear roof frame of the roof carrier;

The rear extension outer panel may be coupled to a roof panel whose upper end is coupled to an upper side of the roof carrier.

The upper end of the rear extension inner panel is coupled to the lower side of the rear roof by welding;

The upper end of the rear extension outer panel may be coupled to the lower side of the roof panel by a mechanical coupling means, an adhesive, or both a mechanical coupling means and an adhesive.

The rear extension inner panel is coupled to a rear side upper of the rear follower assembly while an intermediate portion is coupled to the upper pipe of the quarter assembly;

In the rear extension outer panel, an intermediate portion may be coupled to the side outer.

The middle portion of the rear extension inner panel is coupled by welding in a state in which the L-direction surface is superimposed on the inner side of the upper pipe, and is coupled by mechanical coupling means while surrounding the rear and sides of the rear side upper of the rear follower assembly. ;

The middle portion of the rear extension outer panel may be coupled to the side outer by a mechanical coupling means, an adhesive, or both a mechanical coupling means and an adhesive.

The bag assembly may have a T-direction surface coupled to the rear lower side of the rear follower assembly by a mechanical coupling means.

The present invention provides a rear vehicle body structure capable of securing excellent strength and stiffness while having easy assembly properties in constructing a modularized space frame type vehicle body structure.

1 is a diagram illustrating a modularized space frame vehicle body to which the present invention can be applied,
2 is a view showing a space frame vehicle body to which a rear vehicle body structure according to the present invention is applied,
3 is a view showing an example of configuring a rear extension for configuring the rear body structure of FIG. 2;
FIG. 4 is a view showing an example of configuring a rear assembly by combining a bag assembly with the rear extension of FIG. 3;
5 is a view showing an example of coupling the rear assembly of FIG. 4 to the rear side of the vehicle body;
6 is a view of the rear follower assembly of FIG. 1 observed from the side and rear;
7 is a view observed from the front side of the rear follower assembly of FIG. 6;
FIG. 8 is a view observed from the side and rear sides of the state in which the quarter assembly of FIG. 1 is assembled on the roof carrier;
9 is a view observed from the front side of the rear follower assembly is coupled to the quarter assembly of FIG. 8;
FIG. 10 is a view of the configuration of FIG. 9 observed from the side and rear of the vehicle;
11 is a cross-sectional view taken along line XI-XI of FIG. 2;
12 is a cross-sectional view taken along line XII-XII of FIG. 2;
FIG. 13 is a view illustrating a structure in which an intermediate portion of the rear extension inner panel of FIG. 12 is coupled to an upper pipe of a quarter assembly as viewed from an interior of a vehicle;
14 is a cross-sectional view taken along line XIV-XIV of FIG. 2;
FIG. 15 is a view illustrating a structure in which an intermediate portion of the rear extension inner panel of FIG. 14 is coupled to the rear side upper of the rear follower assembly from outside the rear of the vehicle;
16 and 17 are views of a structure in which the rear assembly is coupled to the rear follower assembly from the interior of the vehicle;
18 is a cross-sectional view taken along line XX-XVIII of FIG. 2;
FIG. 19 is a view of a structure in which the bag assembly of FIG. 18 is coupled to the rear lower side of the rear follower assembly from the rear side of the vehicle.

1 illustrates a modularized space frame vehicle body to which the present invention can be applied, and the front apron assembly 101, the dash assembly 103, the center follower assembly 105 and the rear follower assembly 107 are a follower assembly 109 ), and the side assembly 111, the quarter assembly 113, the rear assembly 115 and the roof carrier 117 constitute the upper assembly 119, and these follower assembly 109 and upper assembly 119 In the assembled state, it is conceptually illustrated that a space frame body can be formed by combining the skin assembly 127 consisting of the fender 121, the side outer 123, and the roof panel 125.

For reference, the above description or the expression shown in FIG. 1 is only for explaining the configuration of the space frame body mentioned in the present invention in an easy to understand manner, and it means the assembly sequence of each part forming the actual space frame body as it is. No, the actual assembly order may vary depending on various situations.

The roof carrier 117 includes a roof side tube 129 on both sides of a vehicle body constituting the same, and a cowl 131 connecting therebetween, a middle roof frame 133 and a rear roof frame 135 are all hollow closed sections. It consists of a structure, to form a space frame structure, the roof side tube 129 is stretched and contracted in the longitudinal direction of the vehicle body, and the cowl 131, the middle roof frame 133, and the rear roof frame 135 are placed in a transverse direction It is constructed so that it can be easily changed and applied to various vehicle types or models by stretching.

The follower assembly 109 is assembled by modifying the length or width of the front apron assembly 101, the dash assembly 103, the center follower assembly 105, and the rear follower assembly 107, which are modularized to constitute the same, It is configured so that it can be easily changed and applied to various vehicle types or models.

Of course, according to the change of the roof carrier 117 and the follower assembly 109, other parts can be assembled by adjusting their shape or size, respectively, so that a vehicle body suitable for the vehicle type or model to be newly developed can be easily developed. This enables the development of new vehicle models to be more easily achieved, and to be effectively applied to the multi-variety small-scale production method.

On the other hand, the skin assembly 127 made of the fender 121, the side outer 123 and the roof panel 125 is made of various materials such as carbon fiber reinforced plastics (CFRP) as well as a conventional general steel plate. By freely deforming the shape according to the desired vehicle type or model and applying it to the space frame as described above, it is possible to easily manufacture a variety of vehicles.

The rear body structure of the present invention can be applied to a space frame vehicle body having the above-described configuration, and referring to Figs. 2 to 5, rear extensions (1) that are respectively installed on both rear sides of the vehicle body to form a rear side portion of the vehicle body. ), and a bag assembly 3 that is installed to form a rear lower portion of the vehicle body while connecting the lower sides of both rear extensions 1.

Here, the rear extension 1 has an upper end supporting the rear end of the roof carrier 117 from the lower side, and the middle portion is the rear side of the quarter assembly 113 and the rear side upper 107-1 of the rear follower assembly 107 ), and the bag assembly (3) is a structure coupled to the rear lower side of the rear follower assembly (107).

For reference, the configuration in which the rear extension 1 and the back assembly 3 are combined is a configuration corresponding to the rear assembly 115 of FIG. 1.

3, the rear extension 1 is composed of a rear extension inner panel (1-IN) and a rear extension outer panel (1-OUT) coupled to the outside of the rear extension inner panel (1-IN). do.

In this embodiment, the rear extension inner panel (1-IN) is a rear extension inner upper panel (1-IN_U) on the upper side and a rear extension inner lower panel coupled to a lower side of the rear extension inner upper panel (1-IN_U). (1-IN_L), the rear extension outer panel (1-OUT) is a rear extension outer upper panel (1-OUT_U) on the upper side and a rear coupled to the lower side of the rear extension outer upper panel (1-OUT_U) It consists of an extension outer lower panel (1-OUT_L).

The rear extension (1) as described above is coupled to the back assembly (3) as shown in FIG. 4 to form the rear assembly (115), and the rear assembly (115) of FIG. 4 to the rear side of the vehicle body as shown in FIG. After coupling to, when the roof carrier 117 is coupled to the upper side, a configuration as shown in FIG. 2 is obtained, and a skin assembly consisting of the fender 121, the side outer 123 and the roof panel 125 of FIG. 1 By combining (127), the space frame body is completed.

The configurations of the rear follower assembly 107 and the quarter assembly 113 that are directly connected when the rear assembly 115 is coupled to the rear of the vehicle body are illustrated in FIGS. 6 to 10.

6 and 7, the rear follower assembly 107 has rear side uppers 107-1 on both sides, and the quarter assembly 113 in FIGS. 8 to 10 includes an upper pipe 113-1. It can be confirmed that it is equipped.

Referring to FIG. 11, the upper end of the rear extension inner panel 1-IN is coupled to the lower side of the rear roof frame 135 of the roof carrier 117, and the rear extension outer panel 1-OUT has an upper end. It is a structure coupled to the roof panel 125 coupled to the upper side of the roof carrier 117.

The upper end of the rear extension inner panel 1-IN is coupled by welding to the lower side of the rear roof panel 135, and the upper end of the rear extension outer panel 1-OUT is at the lower side of the roof panel 125. It may be bonded by a mechanical bonding means, an adhesive, or both by a mechanical bonding means and an adhesive.

In addition, the rear end portions of the rear extension inner panel 1-IN and the rear extension outer panel 1-OUT are coupled to each other by welding.

For reference, in the drawing, the circle represents the bonding by welding, the hexagon represents the mechanical bonding means such as SPR (Self Piercing Revet) or FDS (Flow Drill Screw), and the square represents the bonding by structural adhesive. .

The rear extension inner panel (1-IN) supports the lower side of the rear roof frame 135, and the rear extension outer panel (1-OUT) supports the lower side of the roof panel 125 and extends downward to the quarter assembly. As it is coupled to 113 and connected to the rear follower assembly 107, it ultimately serves to support the roof carrier 117 upward from the rear follower assembly 107, thereby ensuring sufficient strength and rigidity of the vehicle body. It is to be.

Referring to FIG. 12, an intermediate portion of the rear extension inner panel 1-IN is coupled to the upper pipe 113-1 of the quarter assembly 113.

That is, the middle portion of the rear extension inner panel 1-IN is a structure in which the L-direction surface is superimposed on the inner side of the upper pipe 113-1 by welding. If viewed, it can be expressed as shown in FIG. 13.

Referring to FIG. 14, the middle portion of the rear extension inner panel 1-IN is coupled to the rear side upper 107-1 of the rear follower assembly 107.

More specifically, the upper side of the middle part of the rear extension inner panel 1-IN is welded to the upper pipe 113-1 of the quarter assembly 113 as described above, and the lower part thereof is It is coupled by a mechanical coupling means while surrounding the rear and side of the rear side upper (107-1) of the rear follower assembly (107).

When the structure in which the intermediate portion of the rear extension inner panel 1-IN is coupled to the rear of the rear side upper 107-1 by a mechanical coupling means is observed from the outside of the vehicle body, it may be expressed as shown in FIG. 15.

Here, the rear extension inner panel 1-IN has a portion bent in a horizontal direction toward the outside of the vehicle body, and this portion overlaps the upper side of the rear side upper 107-1 and is marked as A. By forming an H-direction overlapping surface therebetween, the bonding strength and rigidity between the rear extension 1 and the rear follower assembly 107 can be greatly increased.

Meanwhile, as can be seen through FIGS. 12 and 14, the rear extension outer panel 1-OUT has a structure in which an intermediate portion is coupled to the side outer 123.

That is, the middle portion of the rear extension outer panel 1-OUT may have its rear end coupled to the rear end of the side outer 123 by a mechanical coupling means, an adhesive, or both a mechanical coupling means and an adhesive.

16 and 17 are views illustrating a structure in which the rear assembly 115 is coupled to the rear follower assembly 107 from the interior of the vehicle. The configuration coupled to the follower assembly 107 will be described.

18 and 19, the bag assembly 3 has a structure in which a T-direction surface is coupled to a rear lower side of the rear follower assembly 107 by a mechanical coupling means.

That is, in a state in which the bag assembly 3 is in close contact with the rear and lower side of the rear follower assembly 107, it is coupled using a mechanical coupling means such as the SPR (Self Piercing Revet) or FDS (Flow Drill Screw).

As described above, the upper side of the rear assembly 115 supports the roof carrier 117 and the roof panel 125, while the middle portion is the rear side upper of the quarter assembly 113 and the rear follower assembly 107. As the back assembly (3) part of the lower side is to be coupled to (107-1) and is assembled on the rear lower side of the rear follower assembly 107, the rear of the vehicle body is easily closed by the rear assembly 115 , The roof carrier 117 is firmly supported from the rear follower assembly 107 on the lower side, so that stronger strength and rigidity of the vehicle body can be secured.

Although the present invention has been illustrated and described in connection with specific embodiments, it is understood in the art that the present invention can be variously improved and changed within the scope of the technical spirit of the present invention provided by the following claims. It will be obvious to those of ordinary skill.

One; Rear extension
3; Swan assembly
107; Rear follower assembly
107-1; Rear side upper
113; Quarter assembly
113-1; Upper pipe
115; Rear assembly
117; Roof carrier
123; Side outer
125; Roof panel
135; Rear roof frame
1-IN; Rear extension inner panel
1-OUT; Rear extension outer panel

Claims (8)

Rear extensions respectively installed on both rear sides of the vehicle body to form a rear side portion of the vehicle body;
A bag assembly installed to form a rear lower portion of the vehicle body while connecting lower sides of the both rear extensions;
Consisting of including,
The rear extension has an upper end supporting a rear end of the roof carrier from a lower side, and an intermediate portion coupled to a rear side of the quarter assembly and a rear side upper of the rear follower assembly;
The bag assembly is coupled to the rear lower side of the rear follower assembly
Rear body structure, characterized in that. The method according to claim 1,
The rear extension is
A rear extension inner panel;
A rear extension outer panel coupled to the outside of the rear extension inner panel;
Rear body structure, characterized in that consisting of. The method according to claim 2,
The rear extension inner panel includes a rear extension inner upper panel on an upper side and a rear extension inner lower panel coupled to a lower side of the rear extension inner upper panel;
The rear extension outer panel is composed of a rear extension outer upper panel on an upper side and a rear extension outer lower panel coupled to a lower side of the rear extension outer upper panel.
Rear body structure, characterized in that. The method according to claim 2,
The upper end of the rear extension inner panel is coupled to a lower side of the rear roof frame of the roof carrier;
The rear extension outer panel is coupled to a roof panel whose upper end is coupled to an upper side of the roof carrier
Rear body structure, characterized in that. The method of claim 4,
The upper end of the rear extension inner panel is coupled to the lower side of the rear roof by welding;
The upper end of the rear extension outer panel is coupled to the lower side of the roof panel by a mechanical coupling means, an adhesive, or both a mechanical coupling means and an adhesive.
Rear body structure, characterized in that. The method according to claim 2,
The rear extension inner panel is coupled to a rear side upper of the rear follower assembly while an intermediate portion is coupled to the upper pipe of the quarter assembly;
The rear extension outer panel is the middle part is coupled to the side outer
Rear body structure, characterized in that. The method of claim 6,
The middle portion of the rear extension inner panel is coupled by welding in a state in which the L-direction surface is superimposed on the inner side of the upper pipe, and is coupled by mechanical coupling means while surrounding the rear and sides of the rear side upper of the rear follower assembly. ;
The middle portion of the rear extension outer panel is coupled to the side outer by a mechanical coupling means, an adhesive, or both a mechanical coupling means and an adhesive.
Rear body structure, characterized in that. The method according to claim 1,
The bag assembly is a T-direction surface coupled to the rear lower side of the rear follower assembly by a mechanical coupling means
Rear body structure, characterized in that.

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