Front body structure

Abstract

The present invention relates to a front body structure including a front mounting bracket and a front side upper member connected to the front mounting bracket. The front side upper member includes an upper member upper surface inclined upward and rearward of a vehicle body. A front flange is formed downward from the upper member upper surface and connected to the front mounting bracket.

Description

[0001] Cross-references to related applications

[0002] This application claims priority and benefit to Korean Patent Application No. 10-2021-0025320, filed on February 25, 2021, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present invention relates to a front vehicle body structure, and more specifically, to a front vehicle body structure that easily disperses collision loads by ensuring the length of the front side upper member in the height direction. Background Technology

[0004] In a typical FEM (Front End Module) mounting bracket, the welding flange for spot welding is formed on the outer side of the front side upper component section. However, if the welding flange is formed on the inner side of the front side upper component, the welded portion is formed within a closed section, and the welding torch cannot enter during spot welding. Therefore, the length of the front side upper component in the vehicle height direction is relatively small. Furthermore, multiple bending points are generated in the lateral profile of the front side upper component, causing impact loads to concentrate at these bending points during a collision and limiting the effective transmission of impact energy.

[0005] The information disclosed in this section is intended only to enhance the understanding of the background technology of this application, and therefore the information it may contain does not constitute prior art known to those skilled in the art in this country. Summary of the Invention

[0006] The present invention aims to provide a front vehicle body structure that promotes the dispersion of collision loads by ensuring the length of the front side upper member in the height direction.

[0007] According to an exemplary embodiment of the present invention, the front vehicle body structure may include a front mounting bracket and a front side upper member connected to the front mounting bracket, wherein the front side upper member includes an upper member upper surface and a front flange, the upper member upper surface being inclined upward and rearward toward the vehicle body, and the front flange being formed downward from the upper member upper surface and connected to the front mounting bracket.

[0008] A bolt hole for the front mounting bracket may be formed on the upper part of the front mounting bracket; a bolt hole for the front flange corresponding to the bolt hole for the front mounting bracket may be formed on the front flange. According to an exemplary embodiment of the present invention, the front vehicle body structure may further include: a front side member and a front side member bracket, the front side member being connected to the front mounting bracket; the front side member bracket connecting the front mounting bracket, the front side member, and the front upper side member.

[0009] The front side component bracket may include an upper bracket, which connects the front mounting bracket and the front side component. The upper bracket may include an upper surface and a lower surface, the upper surface being formed along the length of the vehicle body; the lower surface being formed below the upper surface along the length of the vehicle body.

[0010] According to an exemplary embodiment of the present invention, the front vehicle structure may further include a collision energy-absorbing box mounted at the front of the front mounting bracket, wherein the upper surface and lower surface of the upper bracket may be configured as an upper mounting position and a lower mounting position adjacent to the collision energy-absorbing box. The upper bracket may further include an upper front flange that curves upward from the upper surface of the upper bracket to join the front mounting bracket and the front flange.

[0011] The upper bracket may have upper bracket front flange bolt holes corresponding to the bolt holes on the front mounting bracket and the bolt holes on the front flange. The upper bracket may further include an upper bracket lower flange that bends downward from the lower surface of the upper bracket and connects to the front mounting bracket.

[0012] A lower bolt hole for the front mounting bracket may be formed at the lower part of the front mounting bracket, wherein the lower flange of the upper bracket may be connected to the front mounting bracket adjacent to the lower bolt hole. Welding holes may be formed on the upper surface and the lower surface of the upper bracket, respectively.

[0013] A welding hole for the front mounting bracket, communicating with the welding hole of the upper bracket, can be formed in the front mounting bracket. The front side component bracket may further include a lower bracket connected to the lower part of the upper bracket and the front mounting bracket. According to an exemplary embodiment of the present invention, the front vehicle body structure may further include a lower bracket partition mounted inside the lower bracket and the front mounting bracket.

[0014] The front upper component may include a front upper inner component and a front upper outer component. The front upper inner component is connected to the rear of the front mounting bracket and to the upper surface of the upper bracket. The front upper outer component is connected to the front mounting bracket, surrounds the upper bracket, and engages with the front upper inner component. The front upper component may include an upper flange of the front upper inner component and an upper flange of the front upper outer component. The upper flange of the front upper inner component is formed to extend from the front upper inner component to the upper portion. The upper flange of the front upper outer component extends from the front upper outer component to the upper portion and engages with the upper flange of the front upper inner component. The front upper component may further include a connecting member that connects the front upper outer component and the upper bracket.

[0015] According to an exemplary embodiment of the present invention, the front vehicle body structure can improve collision load dispersion performance by ensuring the length of the front side upper member in the height direction. The front vehicle body structure according to an exemplary embodiment of the present invention can relatively reduce the number of bending points formed in the lateral profile of the front side upper member, thereby dispersing collision energy.

[0016] Furthermore, the effects that can be obtained or predicted through the embodiments of the present invention are disclosed directly or implicitly in the detailed description of the embodiments of the present invention. In other words, various effects predicted according to the embodiments of the present invention will be disclosed in the detailed description described later. Attached Figure Description

[0017] These accompanying drawings are provided for reference when explaining exemplary embodiments of the invention, and the technical concept of the invention should not be construed as being limited to the accompanying drawings.

[0018] Figure 1 This is a perspective view of the front side of the front vehicle body structure according to an exemplary embodiment of the present invention.

[0019] Figure 2 This is an exploded perspective view of the front vehicle body structure according to an exemplary embodiment of the present invention.

[0020] Figure 3 It is along Figure 1 The cross-sectional view shown by line III-III in the diagram.

[0021] Figure 4 This is a perspective view of the front vehicle body structure according to an embodiment of the present invention.

[0022] Figure 5 This is a partial perspective view of the rear side of a front vehicle body structure excluding the upper external members on the front side, according to an exemplary embodiment of the present invention.

[0023] Figure 6 yes Figure 5 The partial perspective view does not include the internal components on the upper front side.

[0024] Figure 7 yes Figure 6 The partial 3D view does not include the lower support.

[0025] Figure 8 Does not include Figure 7 A partial perspective view of the upper support and the second unit of the front side component.

[0026] Figure 9 It is along Figure 1 The cross-sectional view shown by line IX-IX in the diagram.

[0027] Figure 10 This is a side view of the front vehicle body structure according to an exemplary embodiment of the present invention.

[0028] Figure 11 yes Figure 10 An enlarged view of part A.

[0029] Explanation of reference numerals in the attached figures:

[0030] 10: Front mounting bracket

[0031] 12: Front mounting bracket welding holes

[0032] 14: Front mounting bracket protrusion

[0033] 16: Bolt holes on the front mounting bracket

[0034] 18: Lower bolt holes of the front mounting bracket

[0035] 20: Front side component

[0036] 22: First unit of the front side component

[0037] 24: The main body inside the front side component

[0038] 26: Upper flange of the internal main body

[0039] 28: Lower flange of the internal main body

[0040] 32: Second unit of the front side component

[0041] 34: External main body of the front side component

[0042] 36: External body upper flange

[0043] 38: Lower flange of the outer body

[0044] 40: Front side upper component

[0045] 42: Front side upper internal component

[0046] 44: Upper flange of the inner component on the front side

[0047] 46: Front side upper external component

[0048] 47: Connecting components

[0049] 48: Upper flange of the front side outer component

[0050] 50: Upper surface of upper component

[0051] 52: Anterior flange

[0052] 54: Bolt holes on the front flange

[0053] 60: Front side component support

[0054] 62: The latter part

[0055] 64: Rear Staircase Section

[0056] 66: Rear flange

[0057] 70: Upper bracket

[0058] 72: Upper support side surface

[0059] 74: Upper bracket side flange

[0060] 76: Stepped section on the side surface

[0061] 80: Upper surface of the upper bracket

[0062] 82: Welding hole

[0063] 84: Upper flange of upper bracket

[0064] 85: Upper bracket front flange

[0065] 87: Upper bracket front flange bolt holes

[0066] 90: Lower surface of the upper support

[0067] 92: Lower flange of upper bracket

[0068] 94: Welding hole

[0069] 100: Lower support

[0070] 110: Lower support side surface

[0071] 112: Lower support front flange

[0072] 114: Rear surface of the lower support

[0073] 116: Lower support rear flange

[0074] 120: Lower support partition

[0075] 130: Front side partition

[0076] 140: Reinforcement component after subframe installation

[0077] 142: Subframe mounting bolts

[0078] 150: Wheel guards

[0079] 160: Bumper crossbeam

[0080] 162: Collision Energy Absorption Box

[0081] 170: Bumper crossbeam mounting bracket

[0082] 172: Bracket Bolt

[0083] 180: Welding torch. Detailed Implementation

[0084] The invention will now be described more fully with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. Those skilled in the art will recognize that various modifications can be made to the described embodiments without departing from the spirit or scope of this application.

[0085] To clearly explain the invention, parts irrelevant to the description have been omitted, and the same reference numerals denote the same or similar elements throughout the specification. The dimensions and thicknesses of the components shown in the figures are arbitrarily labeled for ease of explanation; the invention is not necessarily limited to the rods shown in the figures, and thicknesses are enlarged to clearly express the various parts and areas. Furthermore, in the following detailed description, to classify components with the same relationship, the component names are categorized as first, second, etc., and the order is not limited in the following description.

[0086] Throughout this specification, when a part "includes" a component, it means that other components may be included rather than excluded, unless otherwise stated. Furthermore, terms such as "part" or "device" described in the specification mean a unit of integrated configuration performing at least one function or operation.

[0087] Unless otherwise stated or obvious from the context, the term “about” as used herein is understood to mean within the normal tolerance range in the field, such as within an average of 2 standard deviations. “Approximately” can be understood as within 10%, 9%, 8%, 7%, 6%, 5%, 4%, 3%, 2%, 1%, 0.5%, 0.1%, 0.05%, or 0.01% of the specified value. All numerical values ​​provided herein are modified using the term “about” unless clearly stated from the context.

[0088] When a part, such as a layer, film, region, or plate, is "on" another part, it includes not only the case where it is directly above the other part, but also the case where the other part exists in between. Conversely, when an element is said to be "on" another element directly, there is no intervening element.

[0089] Exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Figure 1 This is a perspective view taken from the front side of the front vehicle body structure according to an exemplary embodiment of the present invention. Figure 2 This is an exploded perspective view of the front vehicle body structure according to an exemplary embodiment of the present invention.

[0090] refer to Figure 1 and Figure 2 According to an exemplary embodiment of the present invention, the front vehicle body structure may include a front mounting bracket 10 and a front side upper member 40 connected to the front mounting bracket 10. Furthermore, according to an exemplary embodiment of the present invention, the front vehicle body structure may include a front side member 20 connected to the front mounting bracket 10. A bumper beam mounting bracket 170 may be mounted in front of the front mounting bracket 10, a bumper beam 160 may be mounted in front of the vehicle body, and a collision energy absorption box 162 may be mounted between the bumper beam 160 and the bumper beam mounting bracket 170.

[0091] Figure 3 It is along Figure 1 The cross-sectional view shown by line III-III in the diagram. (Reference) Figures 1 to 3 The front side upper member 40 may include an upper member upper surface 50 that slopes upward and rearward toward the vehicle body and a front flange 52 that curves downward from the upper member upper surface 50 and connects to the front mounting bracket 10. A front mounting bracket bolt hole 16 may be formed on the upper part of the front mounting bracket 10, and a front flange bolt hole 54 corresponding to the front mounting bracket bolt hole 16 may be formed on the front flange 52.

[0092] Figure 4 This is a perspective view of the front vehicle body structure according to an embodiment of the present invention. (Reference) Figures 1 to 4 According to an exemplary embodiment of the present invention, the front vehicle body structure may further include a front side member bracket 60 connecting the front mounting bracket 10, the front side member 20, and the front side upper member 40. The front side member bracket 60 may include an upper bracket 70 connecting the front mounting bracket 10 and the front side member 20.

[0093] Figure 5 This is a partial perspective view of a front vehicle body structure excluding the upper external member on the front side, according to an exemplary embodiment of the present invention, viewed from the rear side. Figure 6 yes Figure 5 The partial perspective view does not include the internal components on the upper front side. Figure 7 yes Figure 6 The partial 3D view does not include the lower support. Figure 8 Does not include Figure 7 A partial perspective view of the upper support and the second unit of the front side component.

[0094] The front mounting bracket 10 may include a front mounting bracket protrusion 14 that protrudes to engage with the front side member 20. The front side member 20 may include a front side member first unit 22 having a front side member inner body 24, an upper flange 26 and a lower flange 28 of the inner body. The front side member inner body 24 engages with the front mounting bracket protrusion 14, and the upper flange 26 and the lower flange 28 of the inner body bend from the front side member inner body 24 in the vertical direction, respectively.

[0095] Furthermore, the front side member 20 may include a second front side member unit 32, which has an outer body 34, an upper flange 36, and a lower flange 38. The outer body 34 mates with the front mounting bracket protrusion 14. The upper flange 36 and the lower flange 38 are bent vertically from the outer body 34. The upper flange 36 and the lower flange 38 can be welded to the upper flange 26 and the lower flange 28 of the inner body, respectively.

[0096] Furthermore, the connection directions of the outer main body upper flange 36 and the outer main body lower flange 38, as well as the connection directions of the inner main body upper flange 26 and the inner main body lower flange 28, are formed along the longitudinal direction of the front side member 20. Therefore, the stiffness of the front side member 20 in the longitudinal direction of the vehicle body can be increased.

[0097] The upper bracket 70 may include an upper bracket upper surface 80 formed along the length of the vehicle body and an upper bracket lower surface 90 formed below the upper bracket upper surface 80 along the length of the vehicle body. The upper bracket 70 may also include an upper bracket upper front flange 85 that bends upward from the upper bracket upper surface 80 to engage the front mounting bracket 10 and the front flange 52.

[0098] The upper bracket upper front flange bolt hole 87, corresponding to the bolt hole 16 on the front mounting bracket and the bolt hole 54 on the front flange, can be formed in the upper bracket upper front flange 85. The upper bracket 70 may also include an upper bracket lower flange 92 that bends downward from the lower surface 90 of the upper bracket and connects to the front mounting bracket 10.

[0099] A lower bolt hole 18 of the front mounting bracket can be formed at the lower part of the front mounting bracket 10, and a lower flange 92 of the upper bracket can be arranged adjacent to the lower bolt hole 18 of the front mounting bracket and can engage with the front mounting bracket 10. A bracket bolt 172 engages the bumper beam mounting bracket 170 and the front mounting bracket 10. In other words, the bracket bolt 172 can be inserted into the upper bolt hole 16 of the front mounting bracket and the upper bolt hole 54 of the front flange to engage the bumper beam mounting bracket 170, the front mounting bracket 10, and the front flange 52. Furthermore, an upper front flange 85 of the upper bracket can be disposed between the front mounting bracket 10 and the front flange 52, thereby increasing the strength of the mounting portion through the bracket bolt 172.

[0100] Furthermore, bracket bolt 172 can be inserted into the lower bolt hole 18 of the front mounting bracket to connect the bumper beam mounting bracket 170, the front mounting bracket 10, and the front side component bracket 60. Welding holes 82 and 94 (see...) Figure 9 The welding holes 82 and 94 of the upper bracket can be formed in the upper surface 80 and lower surface 90 of the upper bracket, respectively. The welding hole 12 of the front mounting bracket, which communicates with the welding hole 82 and welding hole 94 of the upper bracket 70, can be formed in the front mounting bracket 10. The upper bracket 70 may include a rear portion 62 that engages with the front side member 20, and the rear portion 62 may tilt toward the rear of the vehicle body.

[0101] The front side member support 60 may include a rear stepped portion 64, which forms a step difference in the rear portion 62. The curved shape of the rear stepped portion 64 may increase the strength of the rear portion 62 of the front side member support 60. The front side member support 60 may include a rear flange 66 that is bent in the rear portion 62 and joined to the front side member 20. The front side member support 60 may be welded to the front side member 20 via the rear flange 66.

[0102] The upper bracket 70 may include an upper bracket side surface 72 connecting the front mounting bracket 10 and the rear portion 62. The upper bracket 70 may include an upper bracket side flange 74 and an upper bracket upper flange 84, the upper bracket side flange 74 being bent from the upper bracket side surface 72 to engage the front mounting bracket 10, and the upper bracket upper flange 84 extending from the upper bracket upper surface 80 and engaging the upper portion of the front side member 20. The upper bracket 70 may include a side surface stepped portion 76, which is formed in a stepped manner on the upper bracket side surface 72 and welded to the lower bracket 100, described later. The strength of the upper bracket side surface 72 may be ensured by the stepped shape of the side surface stepped portion 76.

[0103] The upper bracket 70 can be welded to the front side member 20 in the width direction of the vehicle body via the rear flange 66, and in the height direction of the vehicle body via the upper flange 84. Therefore, the upper bracket 70 can be joined to the front side member 20 in both the width and height directions of the vehicle body, making the connection between the upper bracket 70 and the front side member 20 more secure.

[0104] The front side member bracket 60 may further include a lower bracket 100 connected to the lower portion of the upper bracket 70 and the front mounting bracket 10. The lower bracket 100 may include a lower bracket side surface 110 and a lower bracket rear surface 114. The lower bracket side surface 110 is connected to the front mounting bracket 10 and the upper bracket side surface 72. The lower bracket rear surface 114 is bent on the lower bracket side surface 110 and connected to the rear portion 62 and the front side member 20. The lower bracket 100 may further include a lower bracket front flange 112 and a lower bracket rear flange 116. The lower bracket front flange 112 is bent on the lower bracket side surface 110 and connected to the front mounting bracket 10. The lower bracket rear flange 116 is bent on the lower bracket rear surface 114 and connected to the front side member 20.

[0105] The front vehicle body structure according to an exemplary embodiment of the present invention may further include a lower bracket bulk head 120 disposed inside the lower bracket 100 and the front mounting bracket 10. The front side upper member 40 may include a front side upper inner member 42 and a front side upper outer member 46 (see reference). Figure 1 , Figure 2 and Figure 4 The front side upper inner member 42 is connected to the rear of the front mounting bracket 10 and to the upper surface 80 of the upper bracket; the front side upper outer member 46 is connected to the front mounting bracket 10, surrounds the upper bracket 70, and mates with the front side upper inner member 42.

[0106] The front upper member 40 may further include a connecting member 47 that connects the front upper outer member 46 and the upper bracket 70, and the connecting member 47 may increase the rigidity of the connection portion with the front mounting bracket 10. The front upper member 40 may include a front upper inner member upper flange 44 and a front upper outer member upper flange 48, the front upper inner member upper flange 44 being formed to extend from the front upper inner member 42 to the upper part; the front upper outer member upper flange 48 extending from the front upper outer member 46 to its upper part and engaging with the front upper inner member upper flange 44.

[0107] The front vehicle body structure according to an exemplary embodiment of the present invention may further include a front sidebulk head 130 disposed in the front side member 20 adjacent to the position where the rear portion 62 engages with the front side member 20. Wheel covers 150 may be disposed on the lower portion of the front side member 20, and a subframe mounting reinforcement 140 supporting the subframe mounting bolts 142 may be disposed on the inner side of the front side member 20.

[0108] Figure 9 It is along Figure 1 The cross-sectional view shown by line IX-IX in the diagram. (Reference) Figures 1 to 9 The welding torch 180 can be inserted and welded through the welding holes 82 and 94 of the upper bracket 70 and the welding hole 12 of the front mounting bracket. Therefore, welding operations between the front mounting bracket 10, the front side component bracket 60, and the front side upper component 40 can be easily performed.

[0109] like Figure 2 , Figure 3 and Figure 9 As shown, the upper surface 80 and lower surface 90 of the upper bracket can be configured as mounting portions adjacent to the bracket bolt 172. In other words, the upper surface 80 and lower surface 90 of the upper bracket can be formed parallel to the cross section of the collision energy absorption box 162, thereby effectively transferring the collision load transmitted from the bumper beam 160 to the rear of the vehicle body during a frontal collision.

[0110] Furthermore, the front flange 52 can be bent downward from the upper surface 50 of the upper member, so the mounting portion of the bracket bolt 172 can be formed in the lower part of the upper surface 50 of the upper member of the front side upper member 40. Therefore, the relative profile of the front side upper member 40 in the vehicle height direction can be relatively long. In other words, the cross-section (H) of the front flange 52 in the height direction can be additionally ensured, which ensures the collision load path and thus improves the response performance to frontal collisions.

[0111] Figure 10 This is a side view of the front vehicle body structure according to an exemplary embodiment of the present invention. Figure 11 yes Figure 10 An enlarged view of part A. (Reference) Figures 1 to 10 Since the mounting portion of the bracket bolt 172 is formed below the upper surface 50 of the upper member of the front side upper member 40, the deformation of the lateral profile of the front side upper member 40 can be minimized. Therefore, the path of the collision load path LP of the front side upper member 40 can be simplified, making it easier to disperse the collision load.

[0112] While the invention has been described with reference to exemplary embodiments which are now considered to be actual practices, it should be understood that the invention is not limited to the disclosed embodiments. Rather, the inventive concept is intended to cover various modifications and equivalents included within the spirit and scope of the appended claims.

Claims

1. A front vehicle body structure, comprising: Front mounting bracket; and The front side upper component, which is connected to the front mounting bracket, The front upper side component includes: The upper surface of the upper component slopes upwards and backwards towards the vehicle body; A front flange, which forms downward from the upper surface of the upper member and is connected to the front mounting bracket; Front side member, which is connected to the front mounting bracket; A front side component bracket, which connects the front mounting bracket, the front side component, and the front side upper component; The front side component bracket includes an upper bracket that connects the front mounting bracket and the front side component; and The upper bracket includes an upper surface formed along the length of the vehicle body; and a lower surface formed below the upper surface along the length of the vehicle body. The front vehicle body structure further includes: The impact energy-absorbing box is mounted on the front of the front mounting bracket. The upper surface and the lower surface of the upper bracket are configured as the upper and lower mounting positions adjacent to the collision energy absorption box, respectively.

2. The front vehicle body structure according to claim 1, wherein, Bolt holes for the front mounting bracket are formed on the upper part of the front mounting bracket. Bolt holes corresponding to the bolt holes on the front mounting bracket are formed on the front flange.

3. The front vehicle body structure according to claim 1, wherein, The upper support further includes: The upper bracket has a front flange that bends upward from the upper surface of the upper bracket to engage the front mounting bracket and the front flange.

4. The front vehicle body structure according to claim 3, wherein, The upper bracket has a front flange bolt hole formed on the front flange, which corresponds to the bolt hole on the front mounting bracket and the bolt hole on the front flange.

5. The front vehicle body structure according to claim 1, wherein, The upper support further includes: The lower flange of the upper bracket bends downward from the lower surface of the upper bracket and connects to the front mounting bracket.

6. The front vehicle body structure according to claim 5, wherein, A front mounting bracket lower bolt hole is formed at the lower part of the front mounting bracket. The lower flange of the upper bracket is connected to the lower bolt hole of the front mounting bracket.

7. The front vehicle body structure according to claim 1, wherein, Welding holes are formed on the upper surface and the lower surface of the upper bracket, respectively.

8. The front vehicle body structure according to claim 7, wherein, A welding hole for the front mounting bracket, which communicates with the welding hole of the upper bracket, is formed in the front mounting bracket.

9. The front vehicle body structure according to claim 1, wherein, The front side component support further includes: The lower bracket is connected to the lower part of the upper bracket and the front mounting bracket.

10. The front vehicle body structure according to claim 9, further comprising: The lower bracket partition is installed inside the lower bracket and the front mounting bracket.

11. The front vehicle body structure according to claim 1, wherein, The front upper side member includes: An internal component on the front side, which connects to the rear of the front mounting bracket and to the upper surface of the upper bracket; and An external member on the front side, which is connected to the front mounting bracket, surrounds the upper bracket, and engages with the internal member on the front side.

12. The front vehicle body structure according to claim 11, wherein, The front upper side member includes: An upper flange on the front side upper internal member, formed to extend from the front side upper internal member to the upper part; and An upper flange on the front side upper outer member extends from the front side upper outer member to the upper part and engages with the upper flange on the front side upper inner member.

13. The front vehicle body structure according to claim 11, wherein, The front upper side member includes: A connecting member that connects the upper external member on the front side and the upper bracket.

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