阅读说明：本技术 车体 (Vehicle body ) 是由 金护渊 于 2019-09-10 设计创作，主要内容包括：本发明涉及一种车体,车体具有相邻横向构件,该相邻横向构件与设置在相对侧处的侧面单元的构件一起形成闭环状结构。车体整个围绕环状结构。(The invention relates to a vehicle body having adjacent cross members forming a closed loop structure with members of side units disposed at opposite sides. The body entirely surrounds the ring structure.)

1. A vehicle body, comprising:

a side unit formed in a polygonal shape by connecting a front pillar member, a roof side member, a rear pillar member, and a rocker member, the side unit constituting a side structure of the vehicle body and simultaneously forming a door opening; and

a lateral unit having a plurality of lateral members extending in a width direction of a vehicle, the lateral unit connecting the side units disposed at opposite sides in the width direction of the vehicle and used for respective connections of a foremost end, a rearmost end, an uppermost end, and a lowermost end of the side units,

wherein adjacent cross members form a closed loop structure together with members of the side units disposed at opposite sides, and the vehicle body entirely encloses the loop structure.

2. The vehicle body of claim 1, wherein the side cells form a hexagonal structure.

3. The vehicle body according to claim 2, wherein the lateral units connect hexagonal-shaped apex portions of the side units to each other.

4. The vehicle body according to claim 1, wherein the front pillar member includes a front upper member and a front lower member, a connection point between the front upper member and the front lower member constitutes a foremost end portion of the side unit, and the foremost end portion of the side unit is connected to a foremost cross member of the cross unit.

5. The vehicle body according to claim 4, wherein a lower end of a front windshield is fitted on a foremost cross member, and the foremost cross member is disposed in front of a front wheel suspension mount portion of the vehicle.

6. The vehicle body according to claim 1, wherein a connection point between the front pillar member and the rocker member is connected to a front cross member of a lowermost end of the cross unit.

7. The vehicle body according to claim 1, wherein a central portion of the rocker member is connected to a center cross member of a lowermost end of the cross unit.

8. The vehicle body according to claim 1, wherein a connection point between the front pillar member and the roof side member is connected to an uppermost front cross member of the cross unit.

9. The vehicle body according to claim 1, wherein a connection point between the roof side member and the rear pillar member is connected to an uppermost rear cross member of the cross unit.

10. The vehicle body according to claim 1, wherein the rear pillar member includes:

a rear pillar upper member extending rearward and downward from an upper end; and

a rear pillar lower member extending forward and downward from the upper end,

wherein an upper end of the rear pillar upper member is connected to the roof side member, and a lower end of the rear pillar lower member is connected to the rocker member.

11. The vehicle body according to claim 1, wherein a connection point between the rear pillar upper member and the rear pillar lower member is connected to a rearmost cross member of the cross unit.

12. The vehicle body according to claim 1, wherein the cross member of the cross unit has an end portion having a polygonal cross section, and is connected to the side unit through the polygonal cross section.

13. The vehicle body according to claim 1, wherein the side unit includes a polygonal reinforcement frame, an inner frame coupled to a side of the reinforcement frame corresponding to an inside of the vehicle, and an outer frame coupled to a side of the reinforcement frame corresponding to an outside of the vehicle.

14. The vehicle body according to claim 13, wherein the inner frame is coupled to portions of the reinforcing frame corresponding to roof side and rear pillars to form a closed-section structure with the reinforcing frame.

15. The vehicle body according to claim 14, wherein the outer frame extends along an entire outer shape of the reinforcing frame, and is coupled to the reinforcing frame to form a closed-section structure with the reinforcing frame, and members of the side unit corresponding to the roof side and the rear pillar form a double-closed-section structure in which the inner frame, the reinforcing frame, and the outer frame are overlapped together.

Technical Field

The present disclosure relates to a vehicle body, and more particularly, to a vehicle body applied to a subminiature micro-mobile vehicle or the like to ensure torsional rigidity and collision rigidity of the vehicle.

Background

High demand for ultra-small electric vehicles is predicted in the future. Therefore, in view of mass production rather than conventional manual production, it is necessary to develop a new vehicle body using a pressure welding method of the vehicle body. However, most small vehicles are constructed as a typical double row seat type, and are constructed with a door that opens and closes in the width direction of the vehicle.

The micro-mobile vehicle is configured as a row seat type to cause disconnection of the reinforcement frame. Due to such a connection structure, it is difficult to ensure sufficient ring rigidity, and it is also difficult to ensure high rigidity of the vehicle body. The micro-mobile vehicle is designed with a short front overhang, and thus has a problem that a front shock absorbing space of the vehicle is small, and it is difficult to maintain a vehicle interior space. Thus, a vehicle body structure as a new micro-mobile vehicle and a personal mobile vehicle requires a structure that ensures torsional rigidity and collision rigidity.

The contents described as the related art are provided only to aid in understanding the background of the present disclosure and should not be construed to correspond to the prior art known to one of ordinary skill in the art.

Disclosure of Invention

An object of the present disclosure is to provide a vehicle body that is also applied to a subminiature micro-mobile vehicle or the like to ensure torsional rigidity and collision rigidity of the vehicle.

According to an exemplary embodiment of the present disclosure, a vehicle body may include a side unit formed in a polygonal shape by connecting a front pillar member, a roof side member, a rear pillar member, and a rocker member, the side unit constituting a side structure of the vehicle body and simultaneously forming a door opening; and a lateral unit including a plurality of lateral members extending in a width direction of the vehicle, connecting the side units disposed at opposite sides in the width direction of the vehicle, and for connection of each of a foremost end, a rearmost end, an uppermost end, and a lowermost end of the side units. Additionally, the adjacent cross member forms a closed ring-like structure together with the members of the side units disposed at the opposite sides, and the vehicle body entirely encloses the ring-like structure.

The side cells may form a hexagonal structure. The lateral cells may connect the hexagonal shaped apex portions of the side cells to each other. The front pillar member may include a front upper member and a front lower member, a connection point between the front upper member and the front lower member forms a foremost end portion of the side unit, and the foremost end portion of the side unit may be connected to a foremost cross member of the cross unit. The lower end of the front windshield may be fitted on the foremost cross member, and the foremost cross member may be disposed in front of the front wheel suspension mounting portion of the vehicle.

A connection point between the front pillar member and the rocker member may be connected to a front cross member of a lowermost end of the cross unit. The central portion of the rocker member may be connected to the central cross member of the lowermost end of the cross unit. The connection point between the front pillar member and the roof side member may be connected to the uppermost front cross member of the cross unit. The connection point between the roof side member and the rear pillar member may be connected to the uppermost rear cross member of the cross unit.

Additionally, the rear pillar member may include a rear pillar upper member extending rearward and downward from the upper end; and a rear pillar lower member extending forward and downward from the upper end. An upper end of the rear pillar upper member may be connected to the roof side member, and a lower end of the rear pillar lower member may be connected to the rocker member. The connection point between the rear pillar upper member and the rear pillar lower member may be connected to a rearmost cross member of the cross unit. The cross members of the transverse units may have ends with polygonal cross sections and may be connected to the side units by polygonal cross sections.

The side unit may include a polygonal reinforcement frame, an inner frame coupled to a side of the reinforcement frame corresponding to an inner side of the vehicle, and an outer frame coupled to a side of the reinforcement frame corresponding to an outer side of the vehicle. The inner frame may be coupled to portions of the reinforcement frame corresponding to the roof side and the rear pillar to form a closed-section structure with the reinforcement frame. The outer frame may extend along the entire outer shape of the reinforcing frame, and may be coupled to the reinforcing frame to form a closed-section structure with the reinforcing frame. Further, the members of the side unit corresponding to the roof side and the rear pillar may form a structure with a double closed section in which the inner frame, the reinforcing frame, and the outer frame are overlapped together at the roof side and the rear pillar.

Drawings

The above and other objects, features and advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:

fig. 1 is a diagram illustrating a side unit of a vehicle body according to an exemplary embodiment of the present disclosure;

FIG. 2 is a detailed perspective view of a side unit of the vehicle body according to an exemplary embodiment of the present disclosure; and

FIG. 3 is a perspective view of a vehicle body according to an exemplary embodiment of the present disclosure.

Detailed Description

It should be understood that the term "vehicle" or "vehicular" or other similar terms as used herein generally include motor vehicles, such as passenger cars including Sport Utility Vehicles (SUVs), buses, trucks, various commercial vehicles; boats (including a variety of boats and ships); aircraft, and the like, and includes hybrid vehicles, electric vehicles, combustion, plug-in hybrid electric vehicles, hydrogen-powered vehicles, and other alternative fuel vehicles (e.g., fuels derived from resources other than petroleum).

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Unless specifically stated or otherwise clear from the context, the term "about" as used herein is understood to be within the normal tolerance of the art, e.g., within 2 standard deviations of the mean. "about" can be understood to be within 10%, 9%, 8%, 7%, 6%, 5%, 4%, 3%, 2%, 1%, 0.5%, 0.1%, 0.05%, or 0.01% of the stated value. Unless otherwise clear from the context, all numbers provided herein are modified by the term "about".

Fig. 1 is a diagram illustrating a side unit (side assembly) of a vehicle body according to an exemplary embodiment of the present disclosure. Fig. 2 is a detailed perspective view of a side unit of a vehicle body according to an exemplary embodiment of the present disclosure. FIG. 3 is a perspective view of a vehicle body according to an exemplary embodiment of the present disclosure.

Fig. 1 is a diagram illustrating a side unit of a vehicle body according to an exemplary embodiment of the present disclosure. The vehicle body according to the present disclosure may include a side unit 100, the side unit 100 being formed in a polygonal shape by connecting a front pillar member 120, a roof side member 180, a rear pillar member 160, and a rocker member 140, the side unit 100 configuring a side structure of the vehicle body and simultaneously forming a door opening; and a cross unit 200, the cross unit 200 having a plurality of cross members extending in the width direction of the vehicle. The lateral units 200 may be connected to the side units 100 disposed at opposite sides in the width direction of the vehicle, and may be used for connection of each of the foremost end, rearmost end, uppermost end, and lowermost end of the side units 100, respectively. Further, the adjacent cross members may form a closed loop structure together with the members of the side units disposed at the opposite sides, and thus the vehicle body as a whole surrounds the loop structure.

The vehicle body according to the present disclosure is applicable to various vehicles, particularly, a subminiature vehicle, that is, a micro-mobile vehicle and a personal mobile vehicle which are driven by a motor or the like and have a vehicle body structure with a two-seater environment, and in this case, the effect achieved from the vehicle body can be enhanced. The subminiature vehicle needs to have a frame connection structure for mass production, but the conventional vehicle body does not have a frame structure corresponding to such subminiature vehicle, and thus a new design is required. Further, the subminiature vehicle has a very small front space of the vehicle cabin due to the removal of the engine, and thus, the collision rigidity is insufficient during a front collision.

In order to achieve a lightweight structure, it is necessary to eliminate a structure such as a sub-frame, and therefore torsional rigidity of the vehicle is inevitably insufficient. In particular, in the conventional vehicle frame structure, the rear side of the C-pillar (i.e., the rear pillar portion) is disconnected from the front portion of the vehicle body, and therefore, when the structure is directly applied to a subminiature vehicle, torsional rigidity is reduced.

To overcome this problem, according to the present disclosure, first, among side structures of a vehicle body, a structure for forming a door frame may be configured as a polygonal structure with a closed loop shape, and members may be connected in a band shape to enhance torsional rigidity and form an annular load path. Such side units may be disposed at opposite sides, and the side units at the opposite sides may be connected to each other in the width direction using a plurality of cross members, and in this regard, a plurality of cross members may be disposed at respective appropriate positions, and thus the vehicle may have a generally polygonal pillar shape, and may have a similar structure to a honeycomb structure.

According to the present disclosure, with this structure, the collision rigidity and the torsional rigidity can be improved, and an ultra-light and ultra-small vehicle body can be realized. In particular, a vehicle body according to the present disclosure may include a side unit 100 and a lateral unit 200. The side unit 100 may be a ring-shaped structure connected by a polygon formed by connecting the front pillar member 120, the roof side member 180, the rear pillar member 160, and the rocker member 140. The side unit may configure a side structure of the vehicle body and, at the same time, may form a door opening, and then, the door frame may configure a side structure of the vehicle body. As shown in fig. 3, the lower member 124 of the front pillar member 120 may configure the front wheel house 10, and the rear pillar lower member 164 may form the rear wheel house 20.

The cross unit 200 may include a plurality of cross members extending in the width direction of the vehicle. The cross member may connect the side units 100 positioned at opposite sides in the width direction of the vehicle. Additionally, the cross member may connect the foremost, rearmost, uppermost, and lowermost ends of the side unit 100, and thus may form a load path spreading to opposite sides of the vehicle to form a load path and enhance torsional rigidity during a side collision. According to the present disclosure, with this structure, adjacent cross members may form a closed loop structure together with the members of the side unit 100 disposed at the opposite sides, and thus the vehicle body entirely encloses the loop structure.

In other words, the side unit 100 may form a closed polygonal shape, and at the same time, the adjacent cross member may form a square shape together with the members of the side unit disposed at the opposite side. Thus, the side unit can thus have a three-dimensional shape continuously surrounded by a square, and the final vehicle body can have a polygonal column shape. The polygonal cylinder may have at least three load path branch points at any vertex, and thus is effective in shock absorption and dispersion, and all members of the polygonal cylinder may be connected to each other to enhance the overall torsional rigidity of the vehicle.

In particular, as shown in fig. 1, the side unit 100 may be configured in a hexagonal structure. The side unit formed in a hexagonal shape indicates that the side unit has a closed loop shape to have an approximately hexagonal shape. Further, as shown in fig. 3, the transverse element 200 may connect portions A, B, C, D, E and F corresponding to the vertices of the hexagonal shape of the side element 100. In particular, the side unit 100 may be divided into a plurality of member parts connected to each other. The front pillar member 120 may include a front upper member 122 and a front lower member 124, a connection point a between the front upper member 122 and the front lower member 124 may configure a foremost portion of the side unit 100, and the foremost portion of the side unit 100 may be connected to a foremost cross member 210 of the cross unit 200.

The lower end of the front windshield may be fitted on the foremost cross member 210, and as shown in fig. 3, the foremost cross member 210 may be disposed in front of the front wheel suspension mounting portion 16 of the vehicle. In other words, the vehicle body according to the present disclosure may have an extremely short front overhang, and may be designed entirely as a subminiature vehicle to eliminate the cowl frame. Thus, there is a minimum front shock absorbing space in this structure, and therefore, the shock can be sufficiently dispersed during a front collision, and at the same time, it is required to enhance the rigidity of the passenger seat.

Additionally, the rigidity of the passenger seat needs to be enhanced. Then, the connection point a between the front upper member 122 and the front lower member 124 may configure the foremost end portion of the side unit 100, and the foremost end portion of the side unit 100 may be connected to the foremost cross member 210 of the cross unit 200 to form a load path branched into three branches. In addition, shock input to the front wheel suspension mounting portions 16 adjacent to the foremost end portions of the side units 100 can be dispersed to the front upper member 122 and the front lower member 124 through the load paths to effectively disperse the shock and prevent the cabin from being deformed during a collision. A connection point B between the front pillar member 120 and the rocker member 140 may be connected to a front cross member 220 of the lowermost end of the cross unit. Further, the center portion C of the rocker member 140 may be connected to the center cross member 230 of the lowermost end of the cross unit. A connection point F between the front pillar member 120 and the roof side member 180 may be connected to the uppermost front cross member 260 of the cross unit. A connection point E between the roof side member 180 and the rear pillar member 160 may be connected to the rear cross member 250 of the uppermost end of the cross unit.

In particular, the rear pillar member 160 may include a rear pillar upper member 162, the rear pillar upper member 162 extending rearward and downward from an upper end; and a rear pillar lower member 164, the rear pillar lower member 164 extending forward and downward from an upper end, and an upper end of the rear pillar upper member 162 may be connected to the roof side member 180, and a lower end of the rear pillar lower member 164 may be connected to the rocker member 140. A connection point D between the rear pillar upper member 162 and the rear pillar lower member 164 may be connected to a rearmost cross member 240 of the cross unit.

With this structure, the side units may have a hexagonal shape, and portions corresponding to the vertices of the hexagonal shape may be connected to each other by the cross member, and thus the vehicle body may have a generally polygonal column shape (prism). Further, a portion of the entire load path connected to each other may be formed, and thus even when a collision occurs in any direction, the shock may be effectively dispersed to the entire vehicle body, and the torsional rigidity may be increased. The cross member of the lateral unit may have one end portion having a polygonal cross section and may be connected to the side unit 100 through the polygonal cross section. With this connection structure, the section modulus (section modulus) for transmitting vibration can be increased to effectively transmit vibration from one member to another member and to effectively support the members.

As shown in fig. 2, the side unit 100 may include a polygonal reinforcement frame 400, an inner frame 500 coupled to one side of the reinforcement frame 400 corresponding to the inner side of the vehicle; and an outer frame 300 coupled to one side of the reinforcement frame 400 corresponding to the outside of the vehicle. The inner frame 500 may be coupled to the portion 510 and the portion 520 corresponding to the roof side and the rear pillar of the reinforcement frame 400, forming a structure with a closed section with the reinforcement frame 400. The outer frame 300 may extend along the entire outer shape (layout) of the reinforcing frame 400, and may be coupled to the reinforcing frame 400 to form a structure with a closed section with the reinforcing frame 400.

Thus, the members corresponding to the side units of the front pillar upper side, the roof side, and the rear pillar (square pillar) where the inner frame 500, the reinforcement frame 400, and the outer frame 300 are overlapped may form a structure with a double closed section. A structure with a double closed cross-section may be connected to the cross-member to further improve the rigid structure.

FIG. 3 illustrates a load path of a vehicle body according to the present disclosure. As shown in the drawing, even when vibration is input from the front side, the vibration may be transmitted and dispersed from the front side to the rear side through the ring-shaped side unit. Due to the presence of the annular connection structure, the vehicle body may have enhanced durability characteristics, rather than being recessed during a frontal collision. Furthermore, the curved portions may be reconnected by cross members to enhance stiffness.

Thus, the vehicle body according to the present disclosure may also be applied to a subminiature micro-mobile vehicle or the like to secure torsional rigidity and collision rigidity of the vehicle. The vehicle body according to the present disclosure may also be applied to a subminiature micro-mobile vehicle or the like to secure torsional rigidity and collision rigidity of the vehicle.

While the disclosure has been shown and described with respect to particular embodiments, it will be apparent to those skilled in the art that the disclosure can be variously modified and altered without departing from the spirit and scope of the disclosure as defined by the following claims.