Side member of vehicle and subframe of vehicle

Abstract

A side member of a vehicle includes: a front side member extending in a longitudinal direction of the vehicle; a rear side member extending in a longitudinal direction of the vehicle and provided at a rear of the front side member; a first side member connecting portion having a first insertion hole into which the front side member and the rear side member are inserted; and a second side member connecting portion having a second insertion hole into which the rear side member is inserted. The side member of the vehicle and the subframe of the vehicle including the side member according to the present disclosure may increase rigidity by an assembly method without excessively increasing the weight of the vehicle.

Description

Technical Field

[0001] Exemplary embodiments of this disclosure relate to a side member of a vehicle and a subframe of a vehicle, and more specifically to a side member of a vehicle capable of increasing the stiffness at the joint between members, and a subframe of a vehicle including the side member. Background Technology

[0002] Typically, a vehicle's subframe is divided into a front subframe mounted inside the engine compartment and a rear subframe mounted at the rear of the vehicle. The front subframe is mounted on the main body that forms the engine compartment to support the engine and transmission, and connects to suspension components such as the lower control arms to increase the vehicle's structural rigidity while facilitating load transfer. The rear subframe is mounted on the rear body of the vehicle and connects to various suspension links to further increase the vehicle's structural rigidity.

[0003] In the subframe, the aluminum subframe is assembled by welding multiple mesh components made of aluminum together with aluminum extrusions and joining the mesh components together.

[0004] While a subframe, composed of multiple welded components, is simple to implement in terms of connecting specific body parts, it has limitations in enhancing body rigidity. Furthermore, there is an overall increase in the weight of the subframe, and it is difficult to precisely adjust its stiffness to match the target natural frequency.

[0005] The background technology disclosed herein is disclosed in Korean Patent No. 10-1415464 (published on June 27, 2014, entitled "Subframe of a Vehicle"). Utility Model Content

[0006] Various embodiments relate to a side member of a vehicle that can increase stiffness at the joint between members and simplify the structure, and a subframe for a vehicle including the side member.

[0007] In one embodiment of this disclosure, the side member of the vehicle includes: a front side member extending in the longitudinal direction of the vehicle; a rear side member extending in the longitudinal direction of the vehicle and disposed behind the front side member; a first side member connecting portion having a first insertion hole into which the front side member and the rear side member are inserted; and a second side member connecting portion having a second insertion hole into which the rear side member is inserted.

[0008] The side member may also include a bracket impact bar, which is fitted to one side of the front side member to absorb the impact transmitted to the vehicle body.

[0009] The support impact rod may include: an impact rod body having a mounting hole with threads formed therein; and an impact rod protrusion extending outward from the impact rod body and having a width narrower than the impact rod body; and the front member may include an impact rod insertion hole having a cross-section on one side corresponding to the cross-section of the impact rod protrusion.

[0010] In one embodiment of this disclosure, the vehicle subframe includes: a pair of side members spaced apart in the width direction of the vehicle; a front crossbeam portion disposed in the width direction of the vehicle and having two ends fitted to the pair of side members; and a rear crossbeam portion disposed in the width direction of the vehicle, located behind the front crossbeam, and having two ends fitted to the pair of side members. Each side member may include: a front side member spaced apart in the width direction of the vehicle; a rear side member spaced apart in the width direction of the vehicle and disposed behind the front side member; a first side member connecting portion having a first insertion hole into which the front side member and the rear side member are respectively inserted; and a second side member connecting portion having a second insertion hole into which the rear side member is inserted.

[0011] The first side member connection portion may include a first crossbeam insertion hole having a cross-section corresponding to the cross-section of the front crossbeam portion, such that the front crossbeam portion is installed and assembled therein.

[0012] The rear component may include a second crossbeam insertion hole having a cross-section corresponding to the cross-section of the rear crossbeam, such that the rear crossbeam is assembled therein.

[0013] The rear crossbeam portion may include: a rear crossbeam that is mounted to a rear member; and a rear crossbeam bracket that passes through and supports the rear crossbeam.

[0014] The vehicle's subframe may also include a buffer section, which is disposed in the longitudinal direction of the rear crossbeam section and assembled to the rear crossbeam section.

[0015] The rear crossbeam support may have a buffer groove at the bottom, and the buffer part is installed in the buffer groove.

[0016] The vehicle's subframe may also include: a bracket impact bar, which is mounted to one side of the front member to absorb impacts transmitted to the vehicle body; and a bumper impact bar, which is mounted to the bracket impact bar via a connecting member and has an escape part around the connecting member to prevent damage to the connecting member.

[0017] The side members of the vehicle according to this disclosure and the subframe of the vehicle including the side members can have their rigidity increased by assembly methods without excessively increasing the weight of the vehicle.

[0018] The side members of the vehicle according to this disclosure and the subframe of the vehicle including the side members are manufactured using aluminum alloy materials and extrusion molding to reduce the weight of the vehicle.

[0019] The side member of the vehicle according to this disclosure and the subframe of the vehicle including the side member can effectively support the load transferred to the vehicle body by the buffer portion.

[0020] The side members of the vehicle according to this disclosure and the subframe of the vehicle including the side members can ensure the durability of the suspension system and chassis module through the buffer portion.

[0021] The side members of the vehicle according to this disclosure and the subframe of the vehicle including the side members can have their structure simplified and processing time shortened by the assembly method.

[0022] The side members of the vehicle according to this disclosure and the subframe of the vehicle including the side members can be easily made compatible with the specifications between vehicle models by cutting and sawing the aluminum extrusions. Attached Figure Description

[0023] Figure 1 This is a perspective view schematically showing a side member of a vehicle according to an embodiment of the present disclosure.

[0024] Figure 2 This is an exploded perspective view schematically showing a side member of a vehicle according to an embodiment of the present disclosure.

[0025] Figure 3 The illustration schematically shows the front side member of a vehicle side member according to an embodiment of the present disclosure.

[0026] Figure 4 The rear side member of a side member of a vehicle according to an embodiment of the present disclosure is illustrated schematically.

[0027] Figure 5 The schematic diagram illustrates a first side member connection portion of a vehicle's side member according to an embodiment of the present disclosure.

[0028] Figure 6 The schematic illustration shows a second side member connection portion of a vehicle side member according to an embodiment of the present disclosure.

[0029] Figure 7 The diagram schematically illustrates the connection relationship of the side members of a vehicle according to an embodiment of the present disclosure.

[0030] Figure 8 The illustration schematically shows a bracket impact bar for a side member of a vehicle according to an embodiment of the present disclosure.

[0031] Figure 9 The diagram schematically illustrates the subframe of a vehicle according to an embodiment of the present disclosure.

[0032] Figure 10 This is an exploded perspective view schematically illustrating the subframe of a vehicle according to an embodiment of the present disclosure.

[0033] Figure 11 The diagram schematically illustrates the connection relationship between the front and side members of the subframe of a vehicle according to an embodiment of the present disclosure.

[0034] Figure 12 The diagram schematically illustrates the rear crossbeam portion of the subframe of a vehicle according to an embodiment of the present disclosure.

[0035] Figure 13 The diagram schematically illustrates the connection relationship between the rear crossbeam portion and the rear side member of the subframe of a vehicle according to an embodiment of the present disclosure.

[0036] Figure 14 The schematic illustration shows the buffer portion of the subframe of a vehicle according to an embodiment of the present disclosure.

[0037] Figure 15 The diagram schematically illustrates a bumper impact bar on the subframe of a vehicle according to an embodiment of the present disclosure. Detailed Implementation

[0038] In the following description, embodiments of the side member of the vehicle according to the present disclosure and the subframe of the vehicle including the side member will be described in detail with reference to the accompanying drawings through various exemplary embodiments. It should be understood that, for clarity and convenience of description, the thickness of each line or the size of each component in the drawings may be exaggerated.

[0039] In this process, for clarity and convenience, the thickness of lines or the dimensions of elements shown in the figures may be exaggerated. The terms described below have been defined with consideration of their function in this disclosure and may vary depending on the intent or practice of the user or operator. Therefore, such terms should be interpreted in accordance with the overall content of this specification.

[0040] Furthermore, in this specification, when a part is “connected (or connected) to another part,” it includes not only “directly connected (or connected) to the other part”, but also “indirectly connected (or connected) to” another part between them. In this specification, when a part “includes (or has) a component,” unless specifically stated to the contrary, this means that other components may be further “included (or have)” rather than excluded.

[0041] The purposes and effects of this disclosure will become naturally understood or clearer from the following description, and the purposes and effects of this disclosure are not limited to the following description. Furthermore, in describing this disclosure, detailed descriptions of known techniques related to this disclosure will be omitted if it is determined that such descriptions may unnecessarily obscure the essential points of this disclosure.

[0042] Figure 1 This is a perspective view schematically showing a side member 1 of a vehicle according to an embodiment of the present disclosure.

[0043] Reference Figure 1 The side member 1 of the vehicle includes a front side member 110, a rear side member 120, a first side member connecting portion 130, and a second side member connecting portion 140.

[0044] Figure 2 This is an exploded perspective view schematically showing a side member of a vehicle according to an embodiment of the present disclosure.

[0045] Reference Figure 2 The front component 110, the rear component 120, the first side component connecting portion 130, and the second side component connecting portion 140 are assembled and connected on a single axis.

[0046] According to an embodiment of the present disclosure, the side member 1 extends in a direction parallel to the longitudinal direction of the vehicle and provides longitudinal stiffness for the vehicle. The side members 1 are arranged in pairs and are arranged at predetermined intervals in the width direction of the vehicle.

[0047] Figure 3 The front side member 110 of the side member of a vehicle according to an embodiment of the present disclosure is schematically shown.

[0048] Reference Figure 3 The front side member 110 extends in the longitudinal direction of the vehicle. The front side members 110 may be arranged in pairs in the vehicle, and each front side member 110 is arranged to be spaced apart from each other in the width direction of the vehicle. A threaded hole 112 is formed at the upper end of the front side member 110. The threaded hole 112 is provided with threads, and the suspension part is threaded through the threaded hole 112.

[0049] The front member 110 includes an impact rod insertion hole 111. The front member 110 includes an impact rod insertion hole 111 on one side, each impact rod insertion hole 111 having the characteristics described later. Figure 8 The cross-section of the impact rod protrusion 152 corresponds to the cross-section of the impact rod. Therefore, the front member 110 is assembled with the support impact rod 150, so that the front member 110 and the support impact rod 150 can be easily connected.

[0050] The side surface of the front member 110 is divided into multiple spaces by the first partition portion 113. By providing the first partition portion 113 in the hollow portion of the front member 110, the strength of the front member 110 can be enhanced. Furthermore, the size of the impact rod insertion hole 111 can be set by the first partition portion 113. In other words, by changing the arrangement of the first partition portion 113, the degree of insertion of the support impact rod 150 can be adjusted.

[0051] Figure 4 The rear side member 120 of the side member of a vehicle according to an embodiment of the present disclosure is schematically shown.

[0052] Reference Figure 4 The rear side member 120 extends in the longitudinal direction of the vehicle and is disposed behind the front side member 110. The rear side members 120 may be disposed in pairs in the vehicle, and each rear side member 120 is disposed spaced apart from each other in the width direction of the vehicle.

[0053] The rear member 120 includes a second crossbeam insertion hole 121, the second crossbeam insertion hole 121 having a... Figure 9 The cross-section of the rear crossbeam portion 300 corresponds to the cross-section of the vehicle, such that the rear crossbeam portion 300, described later, is inserted into the second crossbeam insertion hole 121. The second crossbeam insertion hole 121 is rectangular. Both ends of the rear crossbeam portion 300, located in the width direction of the vehicle, are inserted into the second crossbeam insertion hole 121.

[0054] The rear member 120 includes a buffer seat portion 122 at its bottom. (Described later) Figure 14 The buffer portion 400 is located at the bottom of the buffer seat portion 122. The buffer seat portion 122 is connected to the portion disposed in the rear crossbeam portion 300. Figure 13 Buffer slot 323.

[0055] The rear member 120 has the same cross-sectional shape as the front member 110. In other words, the front member 110 and the rear member 120 are extruded to have the same cross-section.

[0056] The front side member 110 and the rear side member 120 form the main frame of the side member 1. In this case, the side member 1, which forms one side of the vehicle subframe 2, is provided with a constant width to support the body with high rigidity. Therefore, each of the front side member 110 and the rear side member 120 is formed with a constant width.

[0057] Since the front member 110 and the rear member 120 are extruded to have the same cross-section, the front member 110 and the rear member 120 are formed with a certain width. In addition, after the front member 110 and the rear member 120 are extruded, the front member 110 and the rear member 120 are cut to a length suitable for vehicle specifications.

[0058] Therefore, the side member 1 according to the present disclosure embodiment is formed with a front side member 110 and a rear side member 120 having the same width, thereby improving durability, and the side member 1 can be adapted to the vehicle body specifications by extrusion and cutting or sawing techniques.

[0059] Figure 5 The schematic diagram illustrates a first side member connection portion 130 of a side member of a vehicle according to an embodiment of the present disclosure.

[0060] Reference Figure 5 The first side component connecting portion 130 is provided with a first insertion hole 131, and the front side component 110 and the rear side component 120 are respectively inserted into the first insertion hole 131, so that the front side component 110 and the rear side component 120 are connected in series.

[0061] The front member 110 is inserted into one side of the first side member connecting portion 130, and the rear member 120 is inserted into the other side of the first side member connecting portion 130. Because the cross-sections of the front member 110 and the rear member 120 are compressed into the same shape, the first insertion hole 131 into which the front member 110 and the rear member 120 are inserted can be provided with the same cross-sectional shape as the front member 110 and the rear member 120.

[0062] A first mounting hole 133 is provided at the bottom of the first side member connecting portion 130, and a lower front arm mount (not shown) can be connected to the first mounting hole 133. Unlike the case where the first mounting hole 133 is provided on the front side member 110 or the rear side member 120, the first mounting hole 133 is provided on the first side member connecting portion 130, so that the lower front arm mount can be stably connected without being offset.

[0063] The second partition portion 134 is disposed between adjacent first insertion holes 131 of the first side member connecting portion 130. The front side member 110 and the rear side member 120 are in contact on both sides of the upper surface of the second partition portion 134. The second partition portion 134 supports the load of the first side member connecting portion 130 and enhances the strength of the first side member connecting portion 130.

[0064] The second partition 134 is configured to adjust the lengths of the front side member 110 and the rear side member 120. For example, when the length of the front side member 110 is set to be short and the length of the rear side member 120 is set to be long, the front side member 110 and the rear side member 120 are cut after compression and connected to the second partition 134 to contact the second partition 134, so that the lengths of the front side member 110 and the rear side member 120 can be precisely adjusted differently. Therefore, the dimensional accuracy of the side member 1 of the vehicle according to the embodiments of the present disclosure can be improved.

[0065] Figure 6 The schematic illustration shows a second side member connection portion 140 of a side member of a vehicle according to an embodiment of the present disclosure.

[0066] Reference Figure 6 The second side component connecting portion 140 is provided with a second insertion hole 141, and the rear side component 120 is inserted into the second insertion hole 141.

[0067] based on Figure 6 The second insertion hole 141 is located on the left side. Like the first insertion hole 131, the second insertion hole 141 has a cross-sectional shape that matches the cross-sectional shape of the rear member 120. One end of the rear member 120 is inserted into the first insertion hole 131, and the other end of the rear member 120 is inserted into the second insertion hole 141.

[0068] A second mounting hole 142 is provided at the bottom of the rear member 120, into which a rear lower arm mount (not shown) can be fitted. The rear lower arm mount is inserted into and connected to the second mounting hole 142.

[0069] Figure 7 The diagram schematically illustrates the connection relationship of the side member 1 of a vehicle according to an embodiment of the present disclosure.

[0070] Reference Figure 7 According to an embodiment of this disclosure, the front side member 110 and the rear side member 120 of the side member 1 are connected in series via a first side member connecting portion 130. Therefore, the front side member 110, the rear side member 120, and the first side member connecting portion 130 and the second side member connecting portion 140 connecting the front side member 110 and the rear side member 120 are arranged on a single axis, as shown below. Figure 7 As shown.

[0071] The first side member connection portion 130 is disposed between the front side member 110 and the rear side member 120. As a result, when the vehicle body vibrates, the front side member 110 and the rear side member 120 will not collide, and durability and rigidity can be ensured.

[0072] Figure 8 The schematic illustration shows a bracket impact rod 150 of a side member of a vehicle according to an embodiment of the present disclosure.

[0073] Reference Figure 8 According to an embodiment of the present disclosure, the side member 1 of the vehicle further includes a bracket impact rod 150, which is mounted to one side of the front side member 110 and absorbs the impact transmitted to the vehicle body.

[0074] The support impact rod 150 includes an impact rod body 151 and an impact rod protrusion 152.

[0075] The impact rod body 151 is provided with a mounting hole 153, and a thread is formed at one end of the mounting hole 153. The impact rod body 151 is threadedly connected to the part described later through the mounting hole 153 in which the thread is formed. Figure 9 The bumper impact bar 500. Therefore, the bracket impact bar 150 can absorb the impact transmitted from the bumper impact bar 500.

[0076] The impact rod protrusion 152 extends outward from the impact rod body 151 and has a narrower width than the impact rod body 151. Because the impact rod protrusion 152 has a chamfered surface, its width is narrower than that of the impact rod body 151. Therefore, when the narrow impact rod protrusion 152 is inserted into… Figure 3 When the impact rod is inserted into the impact rod insertion hole 111 (the impact rod insertion hole 111 has a cross-section corresponding to the cross-section of the impact rod protrusion 152), the bracket impact rod 150 and the front member 110 can be assembled together.

[0077] Figure 9 The diagram schematically illustrates the subframe 2 of a vehicle according to an embodiment of the present disclosure, and Figure 10 This is an exploded perspective view schematically illustrating the subframe of a vehicle according to an embodiment of the present disclosure.

[0078] Reference Figure 9 and Figure 10 The vehicle's subframe 2 includes a pair of side members 1, a front crossbeam portion 200, and a rear crossbeam portion 300.

[0079] A pair of side members 1 are spaced apart from each other in the width direction of the vehicle. Each side member 1 includes a front side member 110, a rear side member 120, a first side member connecting portion 130, and a second side member connecting portion 140.

[0080] Based on Figures 1 to 8 The construction of the front member 110, rear member 120, first member connecting portion 130, and second member connecting portion 140 is obvious from the description, therefore, for ease of explanation, their detailed description will be omitted. When explaining the subframe 2 of the vehicle according to this embodiment, based on... Figures 1 to 8 The reference numerals for the described side member 1 are set to be the same.

[0081] Figure 11 The diagram schematically illustrates the connection relationship between the front and side members of the subframe of a vehicle according to an embodiment of the present disclosure.

[0082] The front crossbeam portion 200 is positioned in the width direction of the vehicle, and both ends of the front crossbeam portion 200 are fitted to... Figure 10 A pair of side members 1.

[0083] Specifically, the first side member connecting portion 130 includes a first crossbeam insertion hole 132, which has a cross-section corresponding to the cross-section of the front crossbeam portion 200, allowing the front crossbeam portion 200 to be fitted therein. Therefore, by fitting the front crossbeam portion 200 into the first crossbeam insertion hole 132, the first side member connecting portion 130 and the front crossbeam portion 200 can be connected. Thereafter, rigidity can be ensured by welding.

[0084] Reference Figure 11 The first crossbeam insertion hole 132 is provided with a step for adjusting the insertion width, so that only a portion of the front crossbeam portion 200 passes through the first crossbeam insertion hole 132. The step serves as a stop and allows for adjustment of the length of the front crossbeam portion 200.

[0085] The rear side member 120 is disposed in the width direction of the vehicle and located behind the front crossbeam portion 200, and both ends can be fitted to a pair of side members 1.

[0086] Figure 12 The diagram schematically illustrates the rear crossbeam portion 300 of the subframe of a vehicle according to an embodiment of the present disclosure.

[0087] Reference Figure 12 The rear crossbeam portion 300 includes a rear crossbeam 310 assembled into the rear side member 120 and a rear crossbeam bracket 320 passing through and supporting the rear crossbeam 310.

[0088] Figure 13 The diagram schematically illustrates the connection between the rear crossbeam portion 300 and the rear side member 120 of the subframe of a vehicle according to an embodiment of the present disclosure.

[0089] Reference Figure 13 The rear component 120 includes a second crossbeam insertion hole 121, which has a cross-section corresponding to the cross-section of the rear crossbeam portion 300, allowing the rear crossbeam portion 300 to be assembled. By fitting both ends of the rear crossbeam 310 into the second crossbeam insertion hole 121 of the rear component 120 without clearance, the rigidity of the subframe 2 of the vehicle according to an embodiment of the present disclosure can be increased.

[0090] The rear crossbeam 310 is centered in the width direction of the vehicle and has a buffer section 400 at the bottom to ensure the internal strength of the subframe 2 against the load of the vehicle body when the vehicle is in motion.

[0091] The rear crossbeam bracket 320 has square holes machined on one side and top, and two threaded holes machined on the bottom. The side square holes 321 of the rear crossbeam bracket 320 match the cross-section of the rear crossbeam 310. The top square hole 322 of the rear crossbeam bracket 320 is provided for additional welding to the rear crossbeam 310. As a result, the rigidity of the rear crossbeam portion 300 can be ensured.

[0092] Figure 14 The schematic illustration shows a buffer portion 400 of the subframe of a vehicle according to an embodiment of the present disclosure.

[0093] Reference Figure 14 and Figure 13 According to an embodiment of the present disclosure, the vehicle subframe is disposed in the longitudinal direction of the rear crossbeam portion 300, and also includes a buffer portion 400 assembled to the rear crossbeam portion 300.

[0094] The buffer section 400 can be configured as a leaf spring, replacing a conventional coil spring. The leaf spring supports the loads applied during sudden starts and stops of the vehicle, thereby ensuring stable driving.

[0095] Leaf springs are made of glass fiber reinforced plastic (GFRP) material. In addition to base materials such as polymers, metals, carbon, and ceramics, leaf springs also include materials reinforced with fibers, linear crystals, and finely dispersed particles to prevent fatigue failure or corrosion caused by winter salt and moisture.

[0096] The rear crossbeam bracket 320 has a buffer groove 323 at its bottom, and the buffer part 400 is installed in the buffer groove 323. (Refer to...) Figure 13 The buffer portion 400 is installed in the recessed buffer groove 323.

[0097] Figure 15 The diagram schematically illustrates a bumper impact bar 500 of the subframe of a vehicle according to an embodiment of the present disclosure.

[0098] Reference Figure 15 According to an embodiment of the present disclosure, the vehicle subframe 2 further includes a bumper impact bar 500, which includes a bracket impact bar 150 and a clearance portion 510. The bracket impact bar 150 is mounted to one side of the front member 110 to absorb the impact transmitted to the vehicle body, while the clearance portion 510 is mounted to the bracket impact bar 150 via a connecting member 511 and surrounds the connecting member 511 to prevent damage to the connecting member 511.

[0099] In the described embodiment, the bracket impact rod 150 and the bumper impact rod 500 are described as a threaded connection as an example, but this disclosure is not limited to this example, and various modifications are possible. The connecting member 511 may be a bolt.

[0100] like Figure 15 As shown, when the bracket impact rod 150 and the bumper impact rod 500 are connected by bolts, the bolts can protrude outwards, and the bumper impact rod 500 can be provided with a cap 510 around the bolts to prevent damage caused by the bolts.

[0101] In the embodiment described, the clearance portion 510 is configured as a triangle. Therefore, the clearance portion 510 can effectively protect the connecting member 511 without unnecessarily wasting space by simply surrounding the connecting member 511.

[0102] Each of the side member 1, bracket impact rod, bumper impact rod, front crossbeam portion 200, and rear crossbeam portion 300 can be extruded. After extrusion, the side member 1, bracket impact rod, bumper impact rod, front crossbeam portion 200, and rear crossbeam portion 300 are cut or sawn to fit the vehicle's specifications, adapting to different specifications for different vehicle models.

[0103] Furthermore, each of the side members 1, bracket impact rod, bumper impact rod, front crossbeam portion 200, and rear crossbeam portion 300 incorporates aluminum material, thereby reducing the weight of the vehicle body while firmly supporting the loads applied during vehicle operation and simplifying the structure of the vehicle's subframe 2.

[0104] Therefore, according to embodiments of the present disclosure, the following effects can be obtained in the side member of the vehicle and the subframe of the vehicle including the side member.

[0105] The side members of the vehicle according to this disclosure and the subframe of the vehicle including the side members can have their rigidity increased by assembly methods without excessively increasing the weight of the vehicle.

[0106] The side members of the vehicle according to this disclosure and the subframe of the vehicle including the side members are manufactured using aluminum alloy materials and extrusion molding to reduce the weight of the vehicle.

[0107] The side member of the vehicle according to this disclosure and the subframe of the vehicle including the side member can effectively support the load transferred to the vehicle body by the buffer portion.

[0108] The side members of the vehicle according to this disclosure and the subframe of the vehicle including the side members can ensure the durability of the suspension system and chassis module through the buffer portion.

[0109] The side members of the vehicle according to this disclosure and the subframe of the vehicle including the side members can have their structure simplified and processing time shortened by the assembly method.

[0110] The side members of the vehicle according to this disclosure and the subframe of the vehicle including the side members can be easily made compatible with the specifications between vehicle models by cutting and sawing the aluminum extrusions.

[0111] Although this disclosure has been described with reference to embodiments shown in the accompanying drawings, the embodiments of this disclosure are for illustrative purposes only, and those skilled in the art will understand that various modifications and other equivalent embodiments are possible from the embodiments.

Claims

1. A side member of a vehicle, characterized in that, include: A front component that extends in the longitudinal direction of the vehicle; A rear member that extends in the longitudinal direction of the vehicle and is disposed behind the front member; The first side member connection portion has a first insertion hole, into which the front side member and the rear side member are inserted; and The second side member connection portion has a second insertion hole, into which the rear side member is inserted.

2. The side member according to claim 1, characterized in that, Also includes: A bracket impact bar is fitted to one side of the front component to absorb impacts transmitted to the vehicle body.

3. The side member according to claim 2, Its features are, The support impact rod includes: The impact rod body has a mounting hole in which threads are formed; and An impact rod protrusion extends outward from the impact rod body and has a width narrower than the impact rod body. The front component includes an impact rod insertion hole, which has a cross-section corresponding to the cross-section of the impact rod protrusion.

4. A subframe for a vehicle, characterized in that, include: A pair of side members spaced apart in the width direction of the vehicle; The front crossbeam portion is positioned in the width direction of the vehicle and has two ends that are fitted to the pair of side members; and The rear crossbeam portion is located in the width direction of the vehicle, behind the front crossbeam, and has two ends that are fitted to the pair of side members. Each of the side members includes: Front components, spaced apart in the width direction of the vehicle; The rear side member is spaced apart in the width direction of the vehicle and is located behind the front side member; The first side member connection portion has a first insertion hole, into which the front side member and the rear side member are respectively inserted; and The second side member connection portion has a second insertion hole, into which the rear side member is inserted.

5. The subframe according to claim 4, characterized in that, The first side member connection portion includes a first crossbeam insertion hole, the first crossbeam insertion hole having a cross-section corresponding to the cross-section of the front crossbeam portion, such that the front crossbeam portion is assembled therein.

6. The subframe according to claim 4, characterized in that, The rear component includes a second crossbeam insertion hole having a cross-section corresponding to the cross-section of the rear crossbeam, such that the rear crossbeam is assembled therein.

7. The subframe according to claim 4, characterized in that, The rear crossbeam portion includes: Rear crossbeam, which is assembled to the rear side member; and A rear crossbeam bracket passes through and supports the rear crossbeam.

8. The subframe according to claim 7, characterized in that, Also includes: A buffer section is disposed in the longitudinal direction of the rear crossbeam section and assembled to the rear crossbeam section.

9. The subframe according to claim 8, characterized in that, The rear crossbeam support has a buffer groove at the bottom, and the buffer portion is installed in the buffer groove.

10. The subframe according to claim 9, characterized in that, Also includes: A bracket impact bar is fitted to one side of the front component to absorb the impact transmitted to the vehicle body; and A bumper impact bar, which is assembled to the bracket impact bar by a connecting member, and has a clearance portion around the connecting member to prevent damage to the connecting member.

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