Vehicle structure

Abstract

The invention provides a vehicle structure. An exemplary vehicle structure includes: a cab; a pair of cab side members respectively disposed on each side of the cab; a pair of side members formed longitudinally in the front-rear direction of the vehicle body and located on the inner side of the vehicle body relative to the pair of cab side members, respectively; a pair of rear side members disposed on outer sides of the pair of side members, respectively; and a pair of side extension members disposed in a lateral direction of the vehicle body to connect the pair of side members and the pair of rear side members, respectively.

Description

Technical Field

[0001] The present disclosure relates to a vehicle structure. Background Art

[0002] A chassis cab vehicle is composed of a chassis and a cab, and no separate body component is provided behind the cab at the front of the vehicle. The chassis cab vehicle is configured such that a rear load-carrying device (such as a deck bed or a container, etc.) can be selected and installed behind the cab.

[0003] When a chassis cab vehicle as described above is configured as an electric vehicle, a battery pack can be installed on the lower side of the body. It is desirable to increase the payload of such a battery pack as much as possible to ensure sufficient vehicle range, and it is desirable to provide sufficient protection for the battery pack in the event of a vehicle collision or the like.

[0004] The description provided above as background information of the embodiments of the present disclosure is only for helping to understand the background art of the present disclosure, and should not be construed as information that can be publicly obtained. Summary of the Invention

[0005] The present disclosure relates to a vehicle structure. The specific embodiment relates to a structure of a chassis cab vehicle, in which a battery pack is installed on the lower side of the chassis cab vehicle.

[0006] The embodiments of the present disclosure can solve the problems in the prior art, and the embodiments of the present disclosure provide a vehicle structure that allows a chassis cab vehicle equipped with a battery pack to be equipped with a battery pack having as much capacity as possible, while effectively protecting the battery pack in the event of a vehicle collision, so that the vehicle range is increased and the collision safety is improved, thereby maximizing the marketability of the vehicle.

[0007] The technical problems that can be solved by the embodiments of the present disclosure are not limited to those mentioned above, and those skilled in the art will clearly understand other problems not mentioned from the following description.

[0008] According to an embodiment of the present invention, there is provided a vehicle structure, including: rear side beams provided outside each of two side members to be connected to the rear of cab side beams provided on each side of the cab; and side extension members provided to extend in the lateral direction of the body to connect each of the side members and the rear side beams.

[0009] A central transverse member may be provided to connect the side members on opposite sides of the body to each other, and the side extension members may be arranged on the same straight line as the central transverse member in the lateral direction of the body.

[0010] The central transverse member and the side extension member can each have a closed cross-section that linearly extends in the lateral direction of the vehicle body.

[0011] The central transverse member and the side extension member can each have a U-shaped lower member and an N-shaped upper member that are joined to each other to form a closed cross-section.

[0012] The battery pack can be disposed below the side member, and the total length of the central transverse member and the side extension member can be greater than the width of the battery pack.

[0013] The battery pack side members located at each end of the battery pack can be fixed to the cab side beam and the rear side beam.

[0014] The rear end of the rear side beam can extend further rearward than the rear end of the battery pack.

[0015] The leaf spring can be installed behind the battery pack, multiple central transverse members and multiple side extension members can be provided, and the rear end of the rear side beam can be coupled to the side extension member on which the front portion of the leaf spring installed behind the battery pack is mounted.

[0016] Each side member located behind the cab can be configured to have a closed cross-section structure, and the top height of the closed cross-section structure is equal to the top height of each of the central transverse member and the side extension member.

[0017] The rear load-carrying device can be mounted on the side member behind the cab, and on the lower side of the mounting panel of the rear load-carrying device, multiple support transverse members can be provided to overlap with the upper side of the central transverse member and the upper side of the side extension member.

[0018] Any support transverse member that overlaps with the upper side of any side extension member can be set to be longer than the width of the battery pack and can extend at least to the upper side of the rear side beam.

[0019] Any support transverse member that does not overlap with any side extension member can be set to have a length that extends at least to the upper side of the side member.

[0020] The mounting bolts that penetrate the mounting panel and any support transverse member can be coupled to any side extension member or any side member to fix the rear load-carrying device to the upper side of the side member.

[0021] The mounting bolts coupled to the side extension member can be coupled to the side extension member at a position between the rear side beam and the battery module horizontally accommodated in the battery pack.

[0022] The side extension member on which the front portion of the leaf spring is mounted has a built-in partition that supports the upper front portion of the leaf spring, and the mounting bolt passes through the partition and is coupled to the side extension member.

[0023] The rear portion of the leaf spring can be mounted on a rear mounting member that projects on each of the opposite sides of the side member, and the mounting bolt can be coupled to the rear mounting member at the upper rear portion of the leaf spring.

[0024] The mounting bolt can be coupled to the side member.

[0025] A plurality of pipe members through which the mounting bolts pass can be provided between the mounting panel and the support transverse member to support the mounting panel and the support transverse member in the vertical direction.

[0026] According to an embodiment of the present disclosure, by equipping a cab-over chassis vehicle on which a battery pack is mounted with a battery pack having as much capacity as possible, while effectively protecting the battery pack in the event of a vehicle collision, the vehicle's cruising range can be increased and the collision safety can be improved, thereby maximizing the marketability of the vehicle.

[0027] The effects of the embodiments of the present disclosure are not limited to the above effects, and those skilled in the art will clearly understand other effects not mentioned from the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a view showing the structure of a cab-over chassis vehicle according to an embodiment of the present disclosure;

[0029] Figure 2 is a view showing a state in which the deck bed is removed, and the deck bed is a type of rear carrying device located behind the cab in Figure 1 ;

[0030] Figure 3 is a view showing the vehicle in Figure 1 as viewed from below;

[0031] Figure 4 is a view showing Figure 3 in a state where the deck bed is removed;

[0032] Figure 5 is a view showing only the deck bed in Figure 3 ;

[0033] Figure 6 is a cross-sectional view taken along line VI-VI of Figure 1 where a battery pack is mounted;

[0034] Figure 7 isFigure 1 Rear view of the vehicle;

[0035] Figure 8 is a sectional view taken along line VIII-VIII of Figure 7 ;

[0036] Figure 9 is a sectional view taken along line IX-IX of Figure 7 ;

[0037] Figure 10 is a sectional view taken along line X-X of Figure 7 ; and

[0038] Figure 11 is a sectional view taken along line XI-XI of Figure 7 ; DETAILED DESCRIPTION

[0039] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings, and regardless of the numbers of the drawings, the same or similar components are given the same reference numerals and will not be described repeatedly.

[0040] In the following description, the terms "module" and "unit" for components are used only for convenience of description and do not have a distinguishable meaning or function.

[0041] In the following description, if it is determined that the detailed description of the known technology related to the present disclosure makes the subject matter of the embodiments described herein unclear, the detailed description will be omitted. In addition, the accompanying drawings are provided only for easy understanding of the embodiments disclosed in this specification, and the technical spirit disclosed in this specification is not limited by the drawings, and all changes, equivalent substitutions, and replacements should be understood to be included in the spirit and scope of the present disclosure.

[0042] Ordinal terms such as "first", "second", etc. may be used to describe a plurality of components, but the components should not be construed as being limited by these terms. These terms are only used to distinguish one component from another.

[0043] It should be understood that when an element is referred to as being "connected to" or "coupled to" another element, the element can be directly connected to or directly coupled to the other element, or the element can be connected to or coupled to the other element with other elements therebetween. On the other hand, it should be understood that when an element is referred to as being "directly connected to" or "directly coupled to" another element, the element can be connected to or coupled to the other element without other elements therebetween.

[0044] Unless the context clearly indicates otherwise, the singular forms are intended to include the plural forms.

[0045] It should also be understood that the term "comprising" or "having" as used in this specification means the presence of the stated features, steps, operations, components, parts, or combinations thereof, but does not preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0046] Reference Figures 1 to 11 , according to an embodiment of the present disclosure, a vehicle structure includes: a rear side member 7 disposed outside the side member 5 to connect to the rear portions of the cab side members 3 provided on opposite sides of the cab 1; and a side extension member 9 disposed to extend along the lateral direction of the vehicle body to connect the side member 5 and the rear side member 7.

[0047] The cab 1 at the front of the vehicle includes a driver's seat located inside and cab side members 3 provided at the lower ends on opposite sides, and a rear loading device 11 is mounted on the side members 5 at the rear.

[0048] At this time, the rear loading device 11 serves as a general term for various devices (such as a container and a deck bed). In this embodiment, an example of mounting the deck bed 13 as the rear loading device 11 is illustrated, and the embodiments of the present disclosure can be applied to vehicles equipped with all types of rear loading devices 11.

[0049] Although conventional cab-over vehicles are not equipped with the rear side member 7, in the embodiment of the present disclosure as described above, the rear side member 7 and the side extension member 9 are configured to provide greater stiffness in the event of an accident (such as a vehicle side collision).

[0050] In this embodiment, a central transverse member 15 is provided between the side members 5 located on opposite sides of the vehicle body to connect the side members 5, and the side extension member 9 is arranged on the same straight line as the central transverse member 15 along the lateral direction of the vehicle body.

[0051] In particular, each of the central transverse member 15 and the side extension member 9 has a closed cross-section linearly extending along the lateral direction of the vehicle body.

[0052] In addition, the side member 5 located behind the cab is formed to have a closed cross-section structure, and the top height of the closed cross-section structure is equal to the top heights of the central transverse member 15 and the side extension member 9.

[0053] In this embodiment, each of the central transverse member 15 and the side extension member 9 has a structure in which a U-shaped lower member 17 and an N-shaped upper member 19 are combined to form a closed cross-section, and the side member 5 can also be formed to have a closed cross-section structure similar to this structure.

[0054] In other words, although a conventional chassis cab vehicle is only equipped with side members 5 and a central transverse member 15, and these side members 5 and the central transverse member 15 are generally also only composed of upper side open U-shaped members, in the embodiments of the present disclosure, both the side members 5 and the central transverse member 15 are configured to form a closed cross-section. In addition, by further providing side extension members 9, since the side extension members 9 form a shape that extends the closed cross-section of the central transverse member 15 in the lateral direction of the vehicle body, the rear side beams 7 are firmly supported, thereby enhancing the collision performance of the vehicle.

[0055] As a reference, the side members 5 extend through the lower side of the cab 1 to the front of the vehicle to form the main frame of the vehicle body.

[0056] In addition, as Figure 6 and Figure 7 shown, the battery pack 21 can be installed on the lower side of the vehicle in the embodiments of the present disclosure.

[0057] In other words, the battery pack 21 is disposed below the side members 5, and the total length of the central transverse member 15 and the side extension members 9 is formed to be greater than the width of the battery pack 21.

[0058] The battery pack side members 6 located at opposite ends of the battery pack 21 are fixed to the cab side beams 3 and the rear side beams 7.

[0059] Therefore, in the event of an accident such as a vehicle side collision, the battery pack 21 will not be directly impacted by the external force due to the cab side beams 3, the rear side beams 7, the side extension members 9, the side members 5, and the central transverse member 15, and thus the battery pack 21 can be safely protected.

[0060] In particular, the embodiments of the present disclosure can increase the size of the battery pack 21 that can be installed on the vehicle without being impacted by the external force by constructing the rear side beams 7 and the side extension members 9 as described above. Therefore, the driving range of the vehicle can be increased by installing more battery modules 23.

[0061] The rear end of the rear side beam 7 extends further backward than the rear end of the battery pack 21, so that the battery pack 21 is completely protected from the impact of a vehicle side collision or the like.

[0062] At the same time, a leaf spring 25 is installed behind the battery pack 21, the central transverse member 15 and the side extension members 9 are provided in plurality, and the rear end of the rear side beam 7 is coupled to the side extension member 9 on which the front portion of the leaf spring 25 is mounted among the plurality of side extension members 9.

[0063] Therefore, a structure is formed that can more firmly support the front portion of the leaf spring 25.

[0064] The rear load-carrying device 11 is mounted on the side member 5 behind the cab, and on the lower side of the mounting panel 27 of the rear load-carrying device 11, a support transverse member 29 overlapping the upper side of the central transverse member 15 and the upper side of the side extension member 9 is provided.

[0065] Among these support transverse members 29, the support transverse member 29 overlapping the upper side of the side extension member 9 is provided to be longer than the width of the battery pack 21 and extends at least to the upper side of the rear side beam 7, thereby providing additional stiffness to protect the battery pack 21 in the event of a vehicle side collision or the like.

[0066] In addition, among these support transverse members 29, the length of the support transverse member 29 not overlapping the side extension member 9 extends at least to the upper side of the side member 5.

[0067] In other words, in this embodiment, the support transverse member 29 near the suspension having the leaf spring 25 does not overlap the side extension member 9 and, in the case of overlapping the central transverse member 15, extends to the upper side of the side member 5, but extends to such an extent as not to interfere with the suspension.

[0068] The mounting bolts 31 penetrating the mounting panel 27 and the support transverse member 29 are coupled to the side extension member 9 or the side member 5 to fix the rear load-carrying device 11 to the upper side of the side member 5.

[0069] As Figure 8 shown, the mounting bolts 31 are coupled to the side extension member 9 between the rear side beam 7 and the battery module 23, and the battery module is accommodated in the battery pack 21 in the horizontal direction.

[0070] Therefore, some portions of the side extension member 9 and the rear side beam 7 located outside based on the area where the mounting bolts 31 are fastened are deformed in the event of a vehicle side collision accident or the like and serve as shock-absorbing components. However, the remaining portions of the side extension member 9, the side member 5, and the central transverse member 15 located inside based on the area where the mounting bolts 31 are fastened provide stiffness to resist the impact force input from the side of the vehicle and serve as components to protect the battery module 23 accommodated in the battery pack 21.

[0071] Reference Figure 9 , the side extension member 9 on which the front portion of the leaf spring 25 is mounted has a built-in partition 33 for supporting the upper front portion of the leaf spring 25, and the mounting bolts 31 pass through the built-in partition 33 and are coupled to the side extension member 9.

[0072] In addition, the rear portion of the leaf spring 25 is mounted on the rear mounting members 35 protruding on opposite sides of the side member 5, and the mounting bolts 31 are coupled to the rear mounting members 35 at the upper rear portion of the leaf spring 25, asFigure 11 as shown in

[0073] Therefore, the areas where the front and rear portions of the leaf spring 25 are mounted are in a more firmly supported state.

[0074] Some of the mounting bolts 31 are coupled to the side member 5.

[0075] In other words, as Figure 10 shown in, in the area where there is a risk of interfering with suspension components such as the leaf spring 25, the length of the support cross member 29 is appropriately restricted to avoid interfering with the suspension components, and the mounting bolts 31 are coupled to the side member 5 to firmly fix the rear carrier device 11 to the side member 5.

[0076] A plurality of pipe members 37 through which the mounting bolts 31 pass are provided between the mounting panel 27 and the support cross member 29 to support the mounting panel 27 and the support cross member 29 in the vertical direction.

[0077] In addition, welding nuts 39 or the like may be provided on the side extension member 9, the side member 5, the built-in partition 33, and the rear mounting member 35 so that the mounting bolts 31 are tightened.

[0078] Although the embodiments of the present disclosure have been provided in connection with the specific embodiments shown in the accompanying drawings, it will be apparent to those skilled in the art that the embodiments of the present disclosure can be changed and modified in various ways without departing from the scope of the present disclosure provided in the appended claims.

Claims

1. A vehicle structure comprising: Cab; a pair of cab side beams, one disposed on each side of the cab; a pair of side members formed longitudinally along the front-rear direction of the vehicle body and respectively located on the inner side of the vehicle body compared with the pair of cab side beams; a pair of rear side beams, respectively arranged on the outer sides of the pair of side members and coupled to the rear portions of the pair of cab side beams; as well as A pair of side extension members are arranged in a transverse direction of the vehicle body to respectively connect the pair of side members and the pair of rear side beams.

2. The vehicle structure according to claim 1, further comprising a central cross member connecting a pair of the side members located on opposite sides of the vehicle body to each other, wherein A pair of the side extension members are arranged on the same straight line as the center cross member in the transverse direction of the vehicle body.

3. The vehicle structure according to claim 2, wherein: The central cross member and the pair of side extension members each have a closed cross-section extending linearly in the transverse direction of the vehicle body.

4. The vehicle structure according to claim 3, wherein: The central cross member and the pair of side extension members each have a u-shaped lower member and an n-shaped upper member coupled to each other to define the closed cross section.

5. The vehicle structure according to claim 3, further comprising a battery pack disposed below a pair of the side members, wherein The total length of the central cross member and the pair of side extension members respectively located on each end of the central cross member is greater than the width of the battery pack.

6. The vehicle structure according to claim 5, further comprising a pair of battery pack side members respectively located at opposite ends of the battery pack, wherein The pair of battery pack side members are respectively fixed to the pair of cab side beams and the pair of rear side beams.

7. The vehicle structure according to claim 5, wherein: The rear ends of the pair of rear side members extend rearward longer than the rear end of the battery pack.

8. The vehicle structure of claim 7, wherein: A pair of leaf springs are arranged behind the battery pack; A plurality of the central cross members are provided and a plurality of pairs of the side extension members are provided; as well as Rear ends of a pair of the rear side members are coupled to a pair of the side extension members on which front portions of a pair of the leaf springs are mounted among the plurality of pairs of the side extension members.

9. The vehicle structure according to claim 8, wherein: Each of the pair of side members has a closed cross-sectional structure having a top height equal to a top height of each of the central cross member and the pair of side extension members.

10. A vehicle structure comprising: Cab; a pair of cab side beams, one disposed on each side of the cab; a pair of side members formed longitudinally along the front-rear direction of the vehicle body and respectively located on the inner side of the vehicle body compared with the pair of cab side beams; a pair of rear side beams, respectively arranged on the outer sides of the pair of side members and coupled to the rear portions of the pair of cab side beams; a pair of side extension members arranged in the transverse direction of the vehicle body to respectively connect the pair of side members and the pair of rear side beams; a central cross member connecting a pair of the side members located on opposite sides of the vehicle body to each other; a battery pack disposed below the pair of side members; a pair of leaf springs disposed at the rear of the battery pack, wherein front portions of the pair of leaf springs are mounted on the pair of side extension members; a rear load-bearing device mounted on a pair of the side members at the rear of the cab; and a plurality of supporting cross members arranged on the lower side of the mounting panel of the rear load bearing device so as to overlap with the upper side of the central cross member and the upper sides of the side extension members; wherein a pair of the side extension members are arranged on the same straight line as the central cross member along the transverse direction of the vehicle body; wherein the central cross member and the pair of side extension members each have a closed cross section extending linearly along the transverse direction of the vehicle body; and Wherein, a total length of the central cross member and a pair of side extension members respectively located on each end of the central cross member is greater than a width of the battery pack.

11. The vehicle structure according to claim 10, wherein: The supporting cross member overlapping upper sides of the pair of side extension members is longer than a width of the battery pack and extends to upper sides of the pair of rear side members.

12. The vehicle structure according to claim 10, wherein: The length of the supporting cross member that does not overlap with the side extension member extends to the upper side of the pair of side members.

13. The vehicle structure according to claim 10, wherein: The mounting bolt is configured to be coupled to any one of the pair of side extension members and the pair of side members by penetrating the mounting panel and any one of the supporting cross members, thereby fixing the rear bearing device to the upper sides of the pair of side members.

14. The vehicle structure according to claim 13, wherein: The mounting bolts are coupled to the side extension members at positions between a pair of the rear side members and a battery module horizontally accommodated in the battery pack.

15. The vehicle structure of claim 13, wherein: the pair of side extension members on which the front portions of the pair of leaf springs are mounted have built-in spacers configured to support upper front portions of the pair of leaf springs; and The mounting bolts pass through the built-in partition to be coupled to the side extension members.

16. The vehicle structure of claim 15, wherein: a pair of rear portions of the leaf springs being mounted on a rear mounting member extending on each of opposite sides of the pair of side members; and The mounting bolt is coupled to the rear mounting member at an upper rear portion of a pair of the leaf springs.

17. The vehicle structure of claim 13, wherein: The mounting bolts are respectively coupled to either one of the pair of side members.

18. The vehicle structure of claim 13, further comprising a plurality of tube members disposed between the mounting panel and the supporting cross member, wherein: The plurality of pipe members are configured to support the mounting panel and the supporting cross member in a vertical direction, and wherein the mounting bolts pass through the plurality of pipe members.

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