Connecting structure for roof side and c-pillar of vehicle

Abstract

The present invention relates to a connection structure between a roof side and a C-pillar of a vehicle and a method of assembling the same, which improves rigidity at the connection point between the roof side and the C-pillar in the vehicle. The connection structure between the roof side and the C-pillar of a vehicle according to the present invention comprises: a roof side outer reinforcement (21); a C-pillar upper reinforcement (23) having a front end spaced apart from the rear end of the roof side outer reinforcement (21) by a predetermined distance; and a roof side outer rear reinforcement (22) connecting the roof side outer reinforcement (21) and the C-pillar upper reinforcement (23) in the longitudinal direction of the vehicle.

Description

Technology Field

[0001] The present invention relates to a connection structure between a roof side and a C-pillar of a vehicle and a method of assembling the same, which improves rigidity at the connection point between the roof side and the C-pillar in the vehicle. Background Technology

[0003] An example of the side structure of a vehicle is illustrated in Fig. 1.

[0004] Looking at the side of the vehicle, a roof-side outer (111) that forms the upper side of the vehicle and supports the side of the roof is formed along the longitudinal direction of the vehicle. The roof-side outer (111) is connected to the A-pillar (112), B-pillar (113), and C-pillar (114) from the front of the vehicle.

[0005] In order to reinforce the rigidity of the above-mentioned roof-side outer (111), a roof-side outer reinforcement (121) is provided to overlap the above-mentioned roof-side outer (111).

[0006] The above-mentioned roof-side outer reinforcement (121) is connected to the rear end of the C-pillar upper reinforcement (123) which reinforces the upper part of the C-pillar (114).

[0007] Meanwhile, the adoption of the aforementioned electric vehicles is increasing recently, and due to the installation of high-voltage batteries in the electric vehicles, the weight of the vehicles increases.

[0008] In this way, as the weight of the vehicle increases, the collision load during a frontal collision of the vehicle affects the rear of the C-pillar (114).

[0009] For example, as shown in FIG. 1, when the vehicle collides with the barrier (130), the collision load is transferred from the front of the vehicle to the rear (see arrow in FIG. 1), and the collision load is transferred to the rear of the C-pillar (114).

[0010] Accordingly, as shown in FIG. 3, the portion where the roof-side outer reinforcement (121) and the C-pillar upper reinforcement (123) are connected (part shown as B in FIG. 3) and the rear portion thereof may bend or break due to the load acting in the longitudinal direction of the vehicle caused by a collision, so an extension of high-strength parts is required.

[0011] In addition, as the vehicle is driven, vibrations input from the road surface through the wheels (see up and down arrows in FIG. 3) are transmitted through the C-pillar (114) to the top of the vehicle, namely the roof-side outer (111), the roof-side outer reinforcement (121), and the C-pillar upper reinforcement (123).

[0012] Meanwhile, due to the application of high-strength components and the input of repetitive vibrations through the wheel, the high-strength components act like a fixed wall, making them vulnerable to twisting.

[0013] This causes the rear structure of the vehicle to deform during a frontal collision, thereby increasing injuries to occupants in the second or third row.

[0014] In addition, when assembling the side structure of the above vehicle, the assembly sequence may vary depending on national regulations and assembly process conditions, which may result in differences in crash performance.

[0015] For example, as shown in FIG. 4, the roof-side outer (111) and the roof-side outer reinforcement (121) are assembled first. After that, the C-pillar upper reinforcement (123) is assembled to the assembly of the roof-side outer (111) and the roof-side outer reinforcement (121) (see FIG. 5). However, since the outer side of the C-pillar upper reinforcement (123) is covered by the roof-side outer (111) and welding is impossible, the C-pillar upper reinforcement (123) could not be welded to the roof-side outer reinforcement (121).

[0016] Alternatively, as shown in FIG. 6, the roof-side outer reinforcement (121) and the C-pillar upper reinforcement (123) are first joined by welding. After that, the roof-side outer (111) is assembled on the outside of the assembly of the roof-side outer reinforcement (121) and the C-pillar upper reinforcement (123) (see FIG. 7).

[0017] According to this assembly order, the connection relationship changes, and this caused a problem in that it caused a difference in collision performance at the area where the roof side outer (111), the roof side outer reinforcement (121), and the C-pillar upper reinforcement (123) are connected.

[0018] Unexplained reference numeral 115 is a wheelhouse on which the above wheel is mounted. Prior art literature

[0020] KR 2023-0139222 A (2023.10.05, Title: Vehicle Rear Structure) The problem to be solved

[0021] The present invention was developed to solve the above-mentioned problems, and aims to provide a connection structure for the roof side and C-pillar of a vehicle and a method of assembling the same, which improves the rigidity of the area where the roof side outer, roof side outer reinforcement, and C-pillar upper reinforcement are connected at the upper side of the vehicle, and ensures that no difference in rigidity occurs even if the assembly order is changed. means of solving the problem

[0023] A connecting structure between a roof side and a C-pillar of a vehicle according to the present invention for achieving the above-mentioned purpose comprises: a roof side outer reinforcement; a C-pillar upper reinforcement, the front end of which is spaced apart from the rear end of the roof side outer reinforcement by a predetermined distance; and a roof side outer rear reinforcement connecting the roof side outer reinforcement and the C-pillar upper reinforcement in the longitudinal direction of the vehicle.

[0024] The above-mentioned roof-side outer rear reinforcement is characterized by overlapping with the roof-side outer reinforcement by a predetermined length from the front end of the roof-side outer rear reinforcement, and overlapping with the C-pillar upper reinforcement by a predetermined length from the rear end and bottom end of the roof-side outer rear reinforcement, respectively.

[0025] The above-described roof-side outer reinforcement is characterized by having a first seating surface formed thereon for a predetermined length from the rear end on which the roof-side outer rear reinforcement is seated, and a front connecting part formed at the front end of the roof-side outer rear reinforcement being seated on the first seating surface.

[0026] The above C-pillar upper reinforcement is characterized by having a second mounting surface formed thereon for a predetermined length from the top and front, on which the roof-side outer rear reinforcement is mounted, and the roof-side outer rear reinforcement is mounted on the second mounting surface.

[0027] A rear connecting portion extending toward the rear is formed on the roof-side outer rear reinforcement, a lower flange is formed on the lower part of the front connecting portion formed at the front end of the roof-side outer rear reinforcement, and a stepped portion is formed between the rear connecting portion and the lower flange, such that the rear connecting portion, the lower flange, and the stepped portion are seated on the second seating surface.

[0028] The above-mentioned roof-side outer reinforcement is formed along the longitudinal direction of the vehicle and is characterized by being assembled to overlap the roof-side outer of the vehicle up to the portion connected to the roof-side outer rear reinforcement.

[0029] The above C-pillar upper reinforcement is characterized by comprising: a first extension part assembled to overlap the roof side outer of the vehicle by a predetermined length from a portion connected to the roof side outer rear reinforcement; and a second extension part extending from the first extension part and assembled to overlap the C-pillar of the vehicle by a predetermined length from a portion connected to the roof side outer rear reinforcement.

[0030] The above-mentioned roof-side outer rear reinforcement is characterized in that the second extension portion of the above-mentioned C-pillar upper reinforcement does not overlap with the portion extending from the first extension portion.

[0031] The above-described roof-side outer rear reinforcement is characterized in that a rear connecting portion extending toward the rear of the roof-side outer rear reinforcement is formed along the upper end of the first extension portion, and the rear connecting portion overlaps with the upper end of the first extension portion.

[0032] The above-described roof-side outer rear reinforcement is characterized in that a lower flange formed at the lower part of the roof-side outer rear reinforcement is seated on the second seating surface in front of the part where the second extension part branches off.

[0033] The above C-pillar upper reinforcement is characterized by having a vertical portion that extends from the second extension portion in the width direction of the vehicle and wraps the C-pillar in the width direction of the vehicle, and a front flange that extends from the vertical portion in the length direction of the vehicle and wraps the front end of the C-pillar.

[0034] The above-mentioned roof-side outer rear reinforcement is characterized by being formed of a metal plate having a higher tensile strength than the above-mentioned C-pillar upper reinforcement.

[0035] The above-mentioned roof-side outer reinforcement and the above-mentioned roof-side outer rear reinforcement are assembled, and the above-mentioned C-pillar upper reinforcement is assembled to the assembly of the above-mentioned roof-side outer reinforcement and the above-mentioned roof-side outer rear reinforcement.

[0036] The above C-pillar upper reinforcement and the above roof-side outer rear reinforcement are assembled, and the above roof-side outer reinforcement is assembled to the assembly of the above C-pillar upper reinforcement and the above roof-side outer rear reinforcement.

[0037] Meanwhile, the assembly method for a connecting structure between a roof side and a C-pillar of a vehicle according to the present invention comprises: a roof side outer reinforcement; a C-pillar upper reinforcement whose front end is spaced apart from the rear end of the roof side outer reinforcement by a predetermined distance; and a roof side outer rear reinforcement connecting the roof side outer reinforcement and the C-pillar upper reinforcement in the longitudinal direction of the vehicle; wherein the roof side outer rear reinforcement is first assembled with either the roof side outer reinforcement or the C-pillar upper reinforcement, and the assembly is then assembled with the other of the roof side outer reinforcement and the C-pillar upper reinforcement.

[0038] The above-mentioned roof-side outer reinforcement and the above-mentioned roof-side outer rear reinforcement are assembled, and the above-mentioned C-pillar upper reinforcement is assembled to the assembly of the above-mentioned roof-side outer reinforcement and the above-mentioned roof-side outer rear reinforcement.

[0039] The above C-pillar upper reinforcement and the above roof-side outer rear reinforcement are assembled, and the above roof-side outer reinforcement is assembled to the assembly of the above C-pillar upper reinforcement and the above roof-side outer rear reinforcement. Effects of the invention

[0041] According to the connection structure of the roof side and C-pillar of the vehicle of the present invention having the above-described configuration and the assembly method thereof, the high-strength roof side outer rear reinforcement connects the roof side outer reinforcement and the C-pillar upper reinforcement, thereby improving the rigidity of the area where the roof side outer reinforcement and the C-pillar upper reinforcement are connected.

[0042] In addition, by selectively assembling the roof-side outer rear reinforcement with the roof-side outer reinforcement and the C-pillar upper reinforcement, the same structure can be formed even if the assembly order changes, so that the same structure can be had regardless of the assembly order.

[0043] In this way, even if the assembly order changes, the same crash performance can be obtained because it has the same structure. Brief explanation of the drawing

[0045] FIG. 1 is a front view illustrating the side structure of a vehicle with a connection structure between the roof side and the C-pillar according to the prior art. FIG. 2 is a front view illustrating the connection structure between the roof side and the C-pillar of a vehicle according to the prior art. FIG. 3 is a schematic diagram illustrating the occurrence of twisting at the joint between the roof side outer reinforcement and the C-pillar upper reinforcement in the connection structure between the roof side and the C-pillar of a vehicle according to the prior art. FIG. 4 is a front view illustrating an embodiment of the coupling sequence for the connection structure of the roof side and the C-pillar of a vehicle according to the prior art. FIG. 5 is a cross-sectional view along line I-I of FIG. 4. FIG. 6 is a front view illustrating another embodiment of the coupling sequence for the connection structure of the roof side and the C-pillar of a vehicle according to the prior art. FIG. 7 is a cross-sectional view along line II-II of FIG. 6. FIG. 8 is a front view illustrating the connection structure between the roof side and the C-pillar of a vehicle according to the present invention. FIG. 9 is an exploded perspective view of the connection structure between the roof side and the C-pillar of a vehicle according to the present invention. FIG. 10 is a schematic diagram illustrating the combined relationship of the roof side and C-pillar connection structure of a vehicle according to the present invention. FIG. 11 is a cross-sectional view along line III-III of FIG. 8. FIG. 12 is a cross-sectional view along line IV-IV of FIG. 8. FIG. 13 is a front view illustrating a welding and bonding portion according to an embodiment of the joining sequence for the connection structure of the roof side and the C-pillar of a vehicle according to the present invention. FIG. 14 is a front view illustrating a welding and bonding portion according to another embodiment of the joining sequence for the connection structure of the roof side and C-pillar of a vehicle according to the present invention. Specific details for implementing the invention

[0046] The connection structure of the roof side and the C-pillar of a vehicle and the assembly method thereof according to the present invention will be described in detail below with reference to the attached drawings.

[0048] The connection structure between the roof side and the C-pillar of a vehicle according to the present invention includes a roof side outer reinforcement (21), a C-pillar upper reinforcement (23) whose front end is spaced apart from the rear end of the roof side outer reinforcement (21) by a predetermined distance, and a roof side outer rear reinforcement (22) connecting the roof side outer reinforcement (21) and the C-pillar upper reinforcement (23) in the longitudinal direction of the vehicle.

[0049] The roof side outer (11) is formed at the top of the vehicle's side structure.

[0050] The above-mentioned roof-side outer (11) is formed along the longitudinal direction of the vehicle and serves to support the side of the vehicle's roof.

[0051] As the roof side outer (11) moves from the front end to the rear end, the upper ends of the A-pillar, B-pillar, and C-pillar (14) are respectively connected.

[0052] The above-mentioned loop-side outer (11) becomes a path through which the collision load is transmitted when the vehicle is in a frontal collision.

[0053] The roof side outer reinforcement (21) overlaps with the roof side outer (11) and is assembled to the roof side outer (11). By assembling the roof side outer reinforcement (21) to the roof side outer (11), it serves to reinforce the rigidity of the roof side outer (11).

[0054] The above-mentioned roof-side outer reinforcement (21) is a component that is highly influenced by material or thickness in terms of collision performance, and it is preferable that it be formed in a straight line along the longitudinal direction of the vehicle in order to maintain a load path during a frontal collision or a side collision.

[0055] The C-pillar upper reinforcement (23) covers the upper part of the C-pillar (14) and a part of the roof-side outer (11). That is, the C-pillar upper reinforcement (23) is assembled in a form that covers the upper part of the C-pillar (14) and the area where the roof-side outer (11) connects to the C-pillar (14). By doing so, the C-pillar upper reinforcement (23) reinforces the rigidity of the upper part of the C-pillar (14) and the area where the roof-side outer (11) connects to the C-pillar (14).

[0056] The above C-pillar upper reinforcement (23) is positioned so that its front end is spaced apart from the rear end of the roof-side outer reinforcement (21) by a predetermined distance.

[0057] The roof-side outer rear reinforcement (22) connects the roof-side outer reinforcement (21) and the C-pillar upper reinforcement (23) which are spaced apart from each other. That is, the roof-side outer rear reinforcement (22) serves to connect the roof-side outer reinforcement (21) and the C-pillar upper reinforcement (23) in the longitudinal direction of the vehicle.

[0058] Looking at FIG. 10, the rear end of the roof-side outer reinforcement (21) and the front end of the C-pillar upper reinforcement (23) are separated by a certain distance, and the roof-side outer rear reinforcement (22) connects them.

[0059] The above-mentioned roof-side outer rear reinforcement (22) overlaps with the roof-side outer reinforcement (21) by a predetermined length from the front end of the roof-side outer rear reinforcement (22), and overlaps with the C-pillar upper reinforcement (23) by a predetermined length from the rear end and bottom end of the roof-side outer rear reinforcement (22), respectively.

[0060] The above-mentioned roof-side outer rear reinforcement (22) overlaps with the above-mentioned roof-side outer reinforcement (21), and the above-mentioned roof-side outer reinforcement (21) forms a first mounting surface (21a) on which the above-mentioned roof-side outer rear reinforcement (22) is seated for a predetermined length from the rear end. The above-mentioned first mounting surface (21a) is formed with a step so that its height differs from that of the above-mentioned roof-side outer reinforcement (21). That is, when the above-mentioned roof-side outer rear reinforcement (22) is seated on the above-mentioned first mounting surface (21a), the above-mentioned roof-side outer rear reinforcement (22) is formed at the same height as the above-mentioned roof-side outer reinforcement (21).

[0061] The front connecting portion (22a) formed at the front end of the above-mentioned roof-side outer rear reinforcement (22) is seated on the first seating surface (21a), thereby causing the roof-side outer rear reinforcement (22) to overlap with the roof-side outer reinforcement (21).

[0062] The overlapping portion of the roof side outer rear reinforcement (22) and the roof side outer reinforcement (21) is welded or structural adhesive is applied, thereby connecting the roof side outer rear reinforcement (22) to the roof side outer reinforcement (21).

[0063] Likewise, the above-mentioned roof-side outer rear reinforcement (22) overlaps with the above-mentioned C-pillar upper reinforcement (23).

[0064] The above C-pillar upper reinforcement (23) has a second seating surface (23c) formed thereon, on which the lower and rear ends of the roof-side outer rear reinforcement (22) are seated, by a predetermined length from the top and front ends, respectively. In particular, the rear connecting part (22b) is formed at the rear end of the roof-side outer rear reinforcement (22) and connected toward the rear of the roof-side outer rear reinforcement (22), and a lower flange (22c) is formed at the bottom of the front connecting part (22a), and a stepped part (22d) is formed between the rear connecting part (22b) and the lower flange (22c) so that the rear connecting part (22b), the lower flange (22c), and the stepped part (22d) are seated on the second seating surface (23c). The second mounting surface (23c) is also formed with a step so that its height differs from that of the C-pillar upper reinforcement (23) so that the roof-side outer reinforcement (21) can be easily mounted. That is, when the roof-side outer rear reinforcement (22) is mounted on the second mounting surface (23c), the roof-side outer rear reinforcement (22) becomes equal in height to the C-pillar upper reinforcement (23). The stepped portion (22d) reinforces the rigidity of the area where the lower flange (22c) and the rear connecting portion (22b) are connected.

[0065] When the rear and lower ends of the roof side outer rear reinforcement (22) are seated on the second seating surface (23c) and overlapped, the overlapped portion is welded or structural adhesive is applied so that the roof side outer rear reinforcement (22) is connected to the C-pillar upper reinforcement (23).

[0066] The above C-pillar upper reinforcement (23) is formed with a first extension part (23a) which is assembled to overlap the roof side outer (11) of the vehicle by a predetermined length from the portion connected to the roof side outer rear reinforcement (22), and a second extension part (23b) which extends from the first extension part (23a) and is assembled to overlap the C-pillar (14) of the vehicle by a predetermined length from the portion connected to the roof side outer rear reinforcement (22).

[0067] In the C-pillar upper reinforcement (23), the first extension (23a) is formed along the longitudinal direction of the vehicle to reinforce the roof side outer (11). The roof side outer (11) is reinforced by the roof side outer reinforcement (21) up to the roof side outer rear reinforcement (22), and has a cross-sectional structure as shown in FIG. 11. That is, the roof side outer reinforcement (21) is assembled to overlap the roof side outer (11) of the vehicle up to the part connected to the roof side outer rear reinforcement (22). After that, the roof side outer (11) is reinforced by the roof side outer rear reinforcement (22), and after the roof side outer rear reinforcement (22), the roof side outer (11) is reinforced by the first extension (23a) in the C-pillar upper reinforcement (23). In particular, the above-mentioned roof-side outer rear reinforcement (22) overlaps with the first extension (23a) of the above-mentioned C-pillar upper reinforcement (23) by a certain length at the portion where the above-mentioned rear connection portion (22b) is formed, and has a cross-sectional structure as shown in FIG. 12.

[0068] As shown in FIG. 8, the loop side outer (11) is shown exposed from the first extension part (23a) to the rear.

[0069] Additionally, the C-pillar upper reinforcement (23) is formed with a vertical section (23d) that extends from the second extension section (23b) in the width direction of the vehicle and wraps the C-pillar (14) in the width direction of the vehicle, and a front flange (23e) that extends from the vertical section (23d) in the length direction of the vehicle and wraps the front end of the C-pillar (14).

[0070] The C-pillar upper reinforcement (23) has a first extension (23a) formed along the longitudinal direction of the vehicle and a second extension (23b) formed along the height direction of the vehicle, and the front end of the C-pillar (14) is wrapped by the vertical section (23d) and the front flange (23e). The C-pillar upper reinforcement (23) has a cross-section in both the longitudinal direction and the vertical direction of the vehicle. Through the second extension (23b), it becomes a main passage through which torsional rigidity transmitted in the vertical direction is conveyed.

[0071] The above-mentioned roof-side outer rear reinforcement (22) does not overlap with the portion where the second extension (23b) extends from the first extension (23a). That is, the portion shown as 'E' in FIG. 8 is avoided, and the roof-side outer rear reinforcement (22) is connected to the C-pillar upper reinforcement (23). That is, the rear connection portion (22b) is formed along the upper end of the first extension (23a), so that the rear connection portion (22b) overlaps with the upper end of the first extension (23a), and thus the rear connection portion (22b) does not overlap with the second extension (23b) that extends downward from the first extension (23a). Additionally, the lower flange (22c) is seated on the second seating surface (23c) in front of the branching portion of the second extension (23b), so that the lower flange (22c) does not overlap with the second extension (23b).

[0072] The above-mentioned roof-side outer rear reinforcement (22) is connected only up to the point where the cross-section widens from the above-mentioned C-pillar upper reinforcement (23). The above-mentioned roof-side outer rear reinforcement (22) is manufactured from a metal plate having a higher tensile strength than the above-mentioned C-pillar upper reinforcement (23). For example, it is preferable that the above-mentioned roof-side outer rear reinforcement (22) be formed from a high-strength steel plate than the above-mentioned C-pillar upper reinforcement (23).

[0073] Accordingly, since the area labeled 'E' in FIG. 8 is a corner where torsional loads are concentrated, the roof-side outer rear reinforcement (22) is designed to avoid this, thereby ensuring torsional rigidity.

[0075] Hereinafter, the assembly method of the connecting structure between the roof side and the C-pillar of a vehicle according to the present invention is described as follows.

[0076] The assembly method of the connecting structure of the roof side and C-pillar of a vehicle according to the present invention is such that, in assembling the roof side outer reinforcement (21), C-pillar upper reinforcement (23), and roof side outer rear reinforcement (22) described above, the roof side outer rear reinforcement (22) is first assembled with either the roof side outer reinforcement (21) or the C-pillar upper reinforcement (23), and is then assembled with the other one of the roof side outer reinforcement (21) and the C-pillar upper reinforcement (23).

[0077] The above-mentioned roof-side outer reinforcement (21) and the above-mentioned C-pillar upper reinforcement (23) are not directly connected, but are connected via the above-mentioned roof-side outer rear reinforcement (22). Accordingly, by first connecting the above-mentioned roof-side outer rear reinforcement (22) to either the above-mentioned roof-side outer reinforcement (21) or the above-mentioned C-pillar upper reinforcement (23), and then connecting it to the other one, the same structure can be achieved regardless of the assembly order. That is, even if national regulations or assembly process conditions differ, the above-mentioned roof-side outer rear reinforcement (22) is assembled first to either the above-mentioned roof-side outer reinforcement (21) or the above-mentioned C-pillar upper reinforcement (23), thereby ultimately ensuring the same structure.

[0078] FIG. 13 first assembles the roof side outer reinforcement (21) and the roof side outer rear reinforcement (22) by welding, and then assembles the C-pillar upper reinforcement (23) to the assembly.

[0079] The above-mentioned roof-side outer reinforcement (21) and roof-side outer rear reinforcement (22) are assembled through welding (W), and the above-mentioned C-pillar upper reinforcement (23) is bonded through structural adhesive. In the area labeled box 'F' in FIG. 13, the roof-side outer reinforcement (21) and the roof-side outer rear reinforcement (22) are welded (W), and in the area labeled box 'G', the above-mentioned C-pillar upper reinforcement (23) is bonded with structural adhesive. Finally, the roof-side outer rear reinforcement (22) and the above-mentioned C-pillar upper reinforcement (23) are assembled by welding (W) at the overlapping portions, such as the roof-side outer (11) and the flange. For example, an example of assembly by welding (W) inside the area labeled box 'E' is shown.

[0080] Referring to FIG. 14, an example is shown in which the C-pillar upper reinforcement (23) and the roof-side outer rear reinforcement (22) are first assembled by welding (W), and then the roof-side outer reinforcement (21) is assembled by bonding. In the area indicated by box 'F', the C-pillar upper reinforcement (23) and the roof-side outer rear reinforcement (22) are welded (W), and in the area indicated by box 'E', the roof-side outer reinforcement (21) is bonded.

[0081] Afterwards, within the area depicted as box 'E', the joint is overlapped by welding (W) in a state where it overlaps from the flange section to the loop side outer (11) at the end.

[0082] In this way, the roof-side outer rear reinforcement (22) is first selectively assembled with either the roof-side outer reinforcement (21) or the C-pillar upper reinforcement (23), and then assembled with the other one. This ensures that even if the assembly order changes due to different national regulations or factory conditions, the same structure is maintained, thus providing the same crash performance. Explanation of the symbols

[0084] 11: Roof side outer 14: C-pillar 21: Roofside outer reinforcement 21a: First seating surface 22: Roofside outer rear reinforcement 22a: Front connection part 22b : Rear connection 22c : Lower flange 22d: Step section 23: C-pillar upper reinforcement 23a : First extension part 23b : Second extension part 23c : Second seating surface 23d : Vertical section 23e : Front flange 111 : Roof side outer 112 : A-Filler 113 : B-Filler 114 : C-pillar 115 : Wheelhouse 121: Roofside Outer Reinforcement 123: C-pillar Upper Reinforcement 130 : Barrier

Claims

Claim 1 A connection structure for a roof side and a C-pillar of a vehicle, comprising: a roof side outer reinforcement; a C-pillar upper reinforcement, the front end of which is spaced apart from the rear end of the roof side outer reinforcement by a predetermined distance; and a roof side outer rear reinforcement connecting the roof side outer reinforcement and the C-pillar upper reinforcement in the longitudinal direction of the vehicle. Claim 2 A connection structure for a roof side and a C-pillar of a vehicle according to claim 1, wherein the roof side outer rear reinforcement overlaps with the roof side outer reinforcement by a predetermined length from the front end of the roof side outer rear reinforcement, and overlaps with the C-pillar upper reinforcement by a predetermined length from the rear end and bottom end of the roof side outer rear reinforcement, respectively. Claim 3 A connection structure between a roof side and a C-pillar of a vehicle according to claim 2, wherein the roof side outer reinforcement has a first seating surface formed thereon for a predetermined length from the rear end on which the roof side outer rear reinforcement is seated, and a front connecting part formed at the front end of the roof side outer rear reinforcement is seated on the first seating surface. Claim 4 A connection structure between the roof side and the C-pillar of a vehicle, characterized in that, in paragraph 2, the C-pillar upper reinforcement has a second mounting surface formed thereon for a predetermined length from the top and front, respectively, on which the roof side outer rear reinforcement is mounted, and the roof side outer rear reinforcement is mounted on the second mounting surface. Claim 5 A connection structure for a roof side and a C-pillar of a vehicle according to claim 4, wherein a rear connecting portion extending toward the rear is formed on the roof side outer rear reinforcement, a lower flange is formed at the lower part of a front connecting portion formed at the front end of the roof side outer rear reinforcement, and a stepped portion is formed between the rear connecting portion and the lower flange, such that the rear connecting portion, the lower flange, and the stepped portion are seated on the second seating surface. Claim 6 A connection structure between the roof side and the C-pillar of a vehicle according to claim 1, wherein the roof side outer reinforcement is formed along the longitudinal direction of the vehicle and is assembled to overlap with the roof side outer of the vehicle up to the portion connected to the roof side outer rear reinforcement. Claim 7 A connection structure for a roof side and a C-pillar of a vehicle, characterized in that, in claim 4, the C-pillar upper reinforcement comprises: a first extension part assembled to overlap the roof side outer of the vehicle by a predetermined length from a portion connected to the roof side outer rear reinforcement; and a second extension part extending from the first extension part and assembled to overlap the C-pillar of the vehicle by a predetermined length from a portion connected to the roof side outer rear reinforcement. Claim 8 A connection structure between the roof side and the C-pillar of a vehicle according to claim 7, wherein the roof side outer rear reinforcement does not overlap with the portion where the second extension part extends from the first extension part in the C-pillar upper reinforcement. Claim 9 A connection structure between the roof side and the C-pillar of a vehicle according to claim 7, wherein the roof side outer rear reinforcement is characterized in that a rear connecting portion extending toward the rear of the roof side outer rear reinforcement is formed along the upper end of the first extension portion, and the rear connecting portion overlaps with the upper end of the first extension portion. Claim 10 A connection structure between the roof side and the C-pillar of a vehicle, wherein, in claim 7, the roof side outer rear reinforcement is characterized in that a lower flange formed at the lower part of the roof side outer rear reinforcement is seated on the second seating surface in front of the part where the second extension part branches off. Claim 11 A connection structure between the roof side and the C-pillar of a vehicle, wherein, in claim 7, the C-pillar upper reinforcement is formed by a vertical portion extending from the second extension portion in the width direction of the vehicle and wrapping the C-pillar in the width direction of the vehicle, and a front flange extending from the vertical portion in the length direction of the vehicle and wrapping the front end of the C-pillar. Claim 12 A connection structure between the roof side and the C-pillar of a vehicle according to claim 1, characterized in that the roof side outer rear reinforcement is formed of a metal plate having a higher tensile strength than the C-pillar upper reinforcement. Claim 13 A connection structure for a roof side and a C-pillar of a vehicle according to claim 1, characterized in that the roof side outer reinforcement and the roof side outer rear reinforcement are assembled, and the C-pillar upper reinforcement is assembled to the assembly of the roof side outer reinforcement and the roof side outer rear reinforcement. Claim 14 A connection structure for a roof side and a C-pillar of a vehicle according to claim 1, characterized in that the C-pillar upper reinforcement and the roof side outer rear reinforcement are assembled, and the roof side outer reinforcement is assembled to the assembly of the C-pillar upper reinforcement and the roof side outer rear reinforcement. Claim 15 A method for assembling a connection structure between a roof side and a C-pillar of a vehicle, comprising: a roof side outer reinforcement; a C-pillar upper reinforcement, the front end of which is spaced apart from the rear end of the roof side outer reinforcement by a predetermined distance; and a roof side outer rear reinforcement connecting the roof side outer reinforcement and the C-pillar upper reinforcement in the longitudinal direction of the vehicle, wherein the roof side outer rear reinforcement is first assembled with either the roof side outer reinforcement or the C-pillar upper reinforcement, and the assembled body is then assembled with the other of the roof side outer reinforcement and the C-pillar upper reinforcement. Claim 16 A method for assembling a connecting structure of a roof side and a C-pillar of a vehicle, characterized in that, in claim 15, the roof side outer reinforcement and the roof side outer rear reinforcement are assembled, and the C-pillar upper reinforcement is assembled to the assembly of the roof side outer reinforcement and the roof side outer rear reinforcement. Claim 17 A method for assembling a connection structure between a roof side and a C-pillar of a vehicle, characterized in that, in claim 15, the C-pillar upper reinforcement and the roof side outer rear reinforcement are assembled, and the roof side outer reinforcement is assembled to the assembly of the C-pillar upper reinforcement and the roof side outer rear reinforcement.

Images