Vehicle front structure

By independently controlling the deformation of the side frames and the movement of the drive source in the vehicle's front structure, the existing problems of load absorption and drive source protection during a collision are solved, achieving more efficient collision safety performance and reducing design complexity.

CN120756580APending Publication Date: 2025-10-10HONDA MOTOR CO LTD
View PDF 1 Cites 0 Cited by

Patent Information

Application Number
CN202410355073.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-03-27
Publication Date
2025-10-10

AI Technical Summary

Technical Problem

Existing vehicle front structures have difficulty in effectively absorbing collision loads and protecting the drive source during a collision, resulting in complex design and increased costs.

Method used

A vehicle front structure is designed in which the cross member is separated from the side frame and the drive source is fixed to the cross member. By independently controlling the deformation of the side frame and the movement of the drive source, a specific component configuration is adopted to absorb the collision load and protect the drive source.

Benefits of technology

Independent control of side frame deformation and drive source movement during a collision is achieved, reducing crushing residues, improving collision safety performance, and reducing design complexity and cost.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN120756580A_ABST
    Figure CN120756580A_ABST
Patent Text Reader

Abstract

The invention provides a vehicle front structure which has good collision safety performance. A vehicle front structure includes: a pair of left and right suspension support members for supporting a suspension device of a vehicle; a side frame connected to the suspension support member and extending forward of the vehicle; a cross beam connecting the pair of left and right suspension support members in the vehicle width direction, the cross beam being provided separately from the side frames above the side frames; and the driving source fixing part is used for fixing a driving source for driving the vehicle and is arranged on the cross beam.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

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

[0002] In recent years, efforts to provide access to sustainable transportation systems that take into account vulnerable road users, such as the elderly, people with disabilities, and children, have intensified. To achieve this goal, research and development efforts are underway to further improve traffic safety and convenience through developments related to collision safety. Prior art has developed various structures designed to safely transmit collision loads in vehicle front structures during a collision.

[0003] For example, prior art document 1 discloses a vehicle front structure comprising a first and second cross-members connecting a pair of left and right side frames in the vehicle width direction. In the event of a frontal collision, the side frames deform to absorb the impact load caused by cross-sectional crushing or bending, transmitting the impact load to the cross-members connected to the side frames. Furthermore, since the motors in the front compartment are typically driven by high voltage, insulation protection is required. For example, if the cross-members and the motors mounted thereon move toward the rear of the vehicle due to input collision loads, a safe travel range must be provided. On the other hand, to prevent the motors from moving in a collision, the motor mounting portions (the cross-members in this structure) must be sufficiently rigid to avoid deformation, but this compromises the ability to balance the impact load. Therefore, this structure requires a design that balances the absorption of the impact load through deformation of the side frames with the motor's movement during a collision, increasing development time and costs.

[0004] This project aims to address these issues and improve collision safety performance. Furthermore, it will contribute to the development of sustainable transportation systems.

[0005] [Prior art literature]

[0006] [Patent Document]

[0007] [Patent Document 1] Japanese Patent No. 5827424 Summary of the Invention

[0008] The invention provides a vehicle front structure with good collision safety performance.

[0009] The present invention provides a vehicle front structure. The vehicle front structure includes: a pair of left and right suspension support members for supporting a vehicle suspension device; side frames connected to the suspension support members and extending toward the front of the vehicle; a cross member connecting the pair of left and right suspension support members in the vehicle width direction, the cross member being disposed above the side frames and spaced apart from the side frames; and a drive source fixing portion for fixing a drive source that drives the vehicle and disposed on the cross member.

[0010] In one embodiment of the present invention, the driving source fixing portion includes a first fixing portion provided on the cross beam and a second fixing portion provided on the suspension support member, and when viewed from the side of the vehicle, the driving source is provided on a reference line connecting the first fixing portion and the second fixing portion.

[0011] In one embodiment of the present invention, the vehicle front structure further includes: an upper frame connected to the suspension support member and extending toward the front of the vehicle; and a vertical connecting member connecting the front end of the upper frame and the front end of the side frame. When viewed from the side of the vehicle, the cross beam is arranged in an area defined by the upper frame and the side frame in the vehicle height direction and is separated from the upper frame.

[0012] In one embodiment of the present invention, the vehicle front structure further includes: a crossbeam connecting portion connecting the suspension support member to a crossbeam rear end portion provided at the rear end of the crossbeam; a side frame connecting portion connecting the suspension support member to a side frame rear end portion provided at the rear end of the side frame; and an upper frame connecting portion connecting the suspension support member to an upper frame rear end portion provided at the rear end of the upper frame, wherein the crossbeam connecting portion is arranged at a position closer to the front of the vehicle than the side frame connecting portion and / or the upper frame connecting portion.

[0013] In one embodiment of the present invention, the vehicle front structure further includes: a connecting frame extending from the lower surface of the side frame toward the bottom of the vehicle; and a lower cross beam connecting the left and right pair of connecting frames in the vehicle width direction, and the front end of the lower cross beam and the front end of the connecting frame are arranged at the same position in the vehicle length direction.

[0014] In one embodiment of the present invention, the vehicle front structure further includes: a lower frame connected to the lower cross member and extending toward the front of the vehicle, wherein the lower frame extends parallel to the side frame and is disposed on the inner side of the connecting frame in the vehicle width direction.

[0015] In one embodiment of the present invention, the vehicle front structure further includes a side frame connection portion connecting the suspension support member to a side frame rear end portion provided at the rear end of the side frame. The suspension support member includes a rear end fixing portion connecting the rear end of the suspension support member to a front pillar and / or a side member of the vehicle; and a plate member connecting the side frame connection portion and the rear end fixing portion and extending in the vehicle length direction.

[0016] In one embodiment of the present invention, the suspension support member has an upper support portion that supports the upper arm of the suspension device, and when viewed from the side of the vehicle, the upper support portion is arranged in a rear end area of ​​the side frame, and the rear end area of ​​the side frame is defined by a reference line extending from the rear end of the upper surface of the side frame in the vehicle length direction and a reference line extending from the rear end of the lower surface of the side frame in the vehicle length direction.

[0017] In one embodiment of the present invention, the suspension support member has a lower support portion supporting the lower arm of the suspension device, and when viewed from the side of the vehicle, the lower support portion is arranged in the rear end area of ​​the lower frame, and the rear end area of ​​the lower frame is defined by a reference line extending from the rear end of the upper surface of the lower frame in the direction of the vehicle length and a reference line extending from the rear end of the lower surface of the lower frame in the direction of the vehicle length.

[0018] In one embodiment of the present invention, the side frame includes an upper surface, a lower surface, an inner surface on the inner side in the vehicle width direction, and an outer surface on the outer side in the vehicle width direction. When viewed from the side of the vehicle, the plate member has an upper rib extending toward the rear of the vehicle from between the cross-beam connecting portion and the side frame connecting portion, and a lower rib extending toward the rear of the vehicle from below the side frame connecting portion. Portions of the upper rib and the lower rib on the inner side in the vehicle width direction are arranged at the same vehicle width direction as the inner surface of the side frame near the side frame connecting portion, and portions of the upper rib and the lower rib on the outer side in the vehicle width direction are arranged at the same vehicle width direction as the outer surface of the side frame near the side frame connecting portion.

[0019] In one embodiment of the present invention, a distance between the upper ribs of the suspension support member in the vehicle width direction decreases toward the plate member as it goes toward the rear of the vehicle.

[0020] Based on the above, in an embodiment of the present invention, the vehicle front structure can be configured such that the crossbeam and drive source are not connected to the side frames through the relative positioning of the side frames, crossbeam, and drive source fixing portion. This allows for independent consideration and control of side frame deformation and drive source movement during a collision. Furthermore, in this embodiment, since the crossbeam is positioned above the side frames, and the drive source is supported and fixed so that it is elongated in the vehicle height direction, if the drive source has a generally elliptical shape when viewed from the side, the vehicle front structure can achieve a short overhang configuration that reduces the space forward of the front wheel axle center. Furthermore, since the crossbeam is not located in the collision load transmission path, no crushing residue is generated forward of the crossbeam. Furthermore, when the area from the front end portion of the cross member to the rear portion of the vehicle serves as a storage area for crushed residues between the side frame connection portion and / or the upper frame connection portion, the entire area of ​​the side frame, which is an impact-absorbing member that absorbs collision loads, can be used as an impact-absorbing area, thereby achieving a short overhang device structure and suppressing the movement and deformation of the cross member and the drive source due to the input of the collision load.

[0021] In order to make the above features and advantages of the present invention more clearly understood, embodiments are given below with reference to the accompanying drawings for detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of a front structure of a vehicle according to an embodiment of the present invention;

[0023] Figure 2 The vehicle's suspension is installed on Figure 1 A schematic structural diagram of a front structure of a vehicle;

[0024] Figure 3 The driver is installed in Figure 1 A schematic side view of a front structure of a vehicle;

[0025] Figure 4 The drive source is installed in accordance with a comparative example. Figure 1 A schematic side view of a front structure of a vehicle;

[0026] Figure 5 yes Figure 1 Schematic diagram of the load transfer path of the front structure of the vehicle in the event of a collision;

[0027] Figure 6 yes Figure 5 Schematic diagram of the retention area of ​​crushed residues generated when the upper rack and side rack are collided;

[0028] Figure 7 yes Figure 1 Schematic diagram of the area where the upper supporting part, lower supporting part, upper ribs and lower ribs of the suspension support member are located.

[0029] Description of reference numerals:

[0030] 100: Vehicle front structure;

[0031] 110: Suspension support member;

[0032] 111: rear end fixing portion;

[0033] 112: Plate member;

[0034] 113: upper support portion;

[0035] 114: lower support portion;

[0036] 120: side frame;

[0037] 130: On the shelf;

[0038] 140: vertical connector;

[0039] 150: connecting frame;

[0040] 160: lower beam;

[0041] 170: Removed from shelves;

[0042] 180: beam;

[0043] 190: driving source fixing portion;

[0044] 191: first fixing portion;

[0045] 192: second fixing portion;

[0046] CLK: crossbeam connection;

[0047] DA: lower arm;

[0048] DR: lower rib;

[0049] FP: front pillar;

[0050] MR: driving source;

[0051] SLK: side frame connection;

[0052] SPD: Suspension Device;

[0053] SS: side sill;

[0054] UA: upper arm;

[0055] ULK: upper shelf connection;

[0056] UR: Upper rib. DETAILED DESCRIPTION

[0057] Figure 1 is a schematic structural diagram of a front structure of a vehicle according to an embodiment of the present invention; Figure 2 The vehicle's suspension is installed on Figure 1 A schematic structural diagram of a front structure of a vehicle; Figure 3 The driver is installed in Figure 1 A schematic side view of a front structure of a vehicle; Figure 4 The drive source is installed in accordance with a comparative example. Figure 1 A schematic side view of a front structure of a vehicle; Figure 5 yes Figure 1 Schematic diagram of the load transfer path of the front structure of the vehicle in the event of a collision; Figure 6 yes Figure 5 Schematic diagram of the retention area of ​​crushed residues generated when the upper rack and side rack are collided; Figure 7 yes Figure 1 A side view schematic diagram showing the positions of the upper and lower ribs of the suspension support member. It should be noted that for convenience, the fore-aft, in-out, and up-and-down directions of the vehicle seat are defined as shown in the figure, and the components are explained according to these definitions. The fore-aft, left-right, and up-and-down directions of the vehicle seat correspond to the vehicle length, vehicle width, and vehicle height, respectively.

[0058] Please refer to Figure 1 In this embodiment, the vehicle front structure 100 includes a pair of left and right suspension support members 110, a side frame 120, an upper frame 130, a vertical connector 140, a connecting frame 150, a lower cross member 160, a lower frame 170, and a cross member 180. Specifically, as Figure 1 and Figure 2As shown, in the present embodiment, a pair of suspension support members 110 are used to support a suspension device SPD of the vehicle. The upper frame 130 and the side frame 120 are connected to the suspension support members 110 at different positions in the vehicle height direction and extend toward the front of the vehicle. The vertical connecting member 140 connects the front end of the upper frame 130 and the front end of the side frame 120. The connecting frame 150 extends from the lower surface of the side frame 120 toward the lower side of the vehicle. The lower cross member 160 connects a pair of the connecting frames 150 in the vehicle width direction, and the front end of the lower cross member 160 and the front end of the connecting frame 150 are provided at the same position in the vehicle longitudinal direction. The lower frame 170 is connected to the lower cross member 160 and extends toward the front of the vehicle, and the lower frame 170 extends in parallel with the side frame 120 and is provided on the inner side of the connecting frame 150 in the vehicle width direction. The cross member 180 connects a pair of the suspension support members 110 in the vehicle width direction, and the cross member 180 is provided separately from the side frame 120 above the side frame 120. When viewed from the side of the vehicle, the cross member 180 is provided in the region defined by the upper frame 130 and the side frame 120 in the vehicle height direction, and is provided separately from the upper frame 130.

[0059] Also, as Figure 3 As shown, in the present embodiment, the vehicle front structure 100 further includes a drive source fixing portion 190 for fixing a drive source MR that drives the vehicle, and the drive source fixing portion 190 is provided on the cross member 180. In the present embodiment, the drive source MR is a motor. Thus, in the present embodiment, by the arrangement of the relative positions of the side frame 120, the cross member 180, and the drive source fixing portion 190, it is possible to form a structure in which the cross member 180 and the drive source MR are not connected to the side frame 120, and the drive source MR is fixed to the cross member 180 and the suspension support members 110. Thus, in the event of a collision, it is possible to independently consider and control the deformation of the side frame 120 and the movement of the drive source MR. Specifically, when a collision occurs, the side frame 120 absorbs the collision load and deforms, and it is possible to make it possible not to move the drive source MR. Also, in the present embodiment, since the cross member 180 is arranged above the side frame 120, in the case where the drive source MR is substantially elliptical when viewed from the side, by supporting and fixing the drive source MR in such a manner that the drive source MR is longer in the vehicle height direction, compared to Figure 4 As shown, in the present embodiment, the vehicle front structure 100 can achieve a structure of a short overhang device that shortens the space forward of the center of the axle of the front wheels.

[0060] Also, as Figure 3As shown, in this embodiment, the drive source fixing portion 190 includes a first fixing portion 191 provided on the crossbeam 180 and a second fixing portion 192 provided on the suspension support member 110. When viewed from the side of the vehicle, the drive source MR is positioned on a reference line L connecting the first fixing portion 191 and the second fixing portion 192. In this embodiment, the driving force output from the drive source MR generates a rotational torque about the axle, that is, a rotational moment in a clockwise or counterclockwise direction when viewed from the side of the vehicle. The reaction torque of this rotational torque causes the drive source MR to rotate. This rotation of the drive source MR is appropriately suppressed by clamping the drive source MR between the first fixing portion 191 and the second fixing portion 192. Furthermore, positioning the drive source MR on an imaginary line passing through the center of the axle further suppresses this rotation.

[0061] On the other hand, Figure 5 As shown, when a collision occurs, the vehicle front structure 100 can transmit the collision load in front of the vehicle in two directions toward the upper frame 130 and the side frame 120 through the configuration of the vertical connecting member 140. In addition, since the cross member 180 is arranged in the area between the upper frame 130 and the side frame 120, that is, the cross member 180 is not arranged on the transmission path of the collision load, it is possible to suppress the movement and deformation of the cross member 180 and the driving source MR due to the input of the collision load.

[0062] On the other hand, Figure 1 and Figure 2 As shown, in this embodiment, the vehicle front structure 100 further includes a cross member connection portion CLK, a side frame connection portion SLK, and an upper frame connection portion ULK. The cross member connection portion CLK connects the suspension support member 110 to the rear end portion of the cross member 180, which is located at the rear end of the cross member 180. The side frame connection portion SLK connects the suspension support member 110 to the rear end portion of the side frame 120, which is located at the rear end of the side frame 120. The upper frame connection portion ULK connects the suspension support member 110 to the rear end portion of the upper frame 130, which is located at the rear end of the upper frame 130. The cross member connection portion CLK is located further forward of the vehicle than the side frame connection portion SLK and / or the upper frame connection portion ULK.

[0063] So, like Figure 5 and Figure 6As shown, in the event of a collision, since the cross-member connection CLK is located further forward of the vehicle than the side frame connection SLK and / or the upper frame connection ULK, any crushed remains from the deformation of the side frame 120 and upper frame 130 due to the collision load from the front of the vehicle can be retained in an area further rearward of the rear end of the cross-member 180. Furthermore, since the cross-member 180 is not located in the collision load transmission path, no crushed remains will be generated in front of the cross-member 180. Furthermore, since the area from the front end of the cross-member 180 to the rear of the vehicle serves as the area for crushed remains between the side frame connection SLK and / or the upper frame connection ULK, the entire area of ​​the side frame 120, which serves as an impact-absorbing member for absorbing collision loads, can be used as an impact-absorbing area, thereby achieving a short overhang structure.

[0064] More specifically, in conventional structures where a cross-member is positioned in the collision load transmission path, crush residue may form in front of the cross-member. This crush residue may extend in front of the side frame 120, resulting in an increase in frontal volume and a decrease in passenger cabin space. On the other hand, moving the cross-member toward the rear of the vehicle affects the position and configuration of the drive source MR. Specifically, in this embodiment, since the cross-member 180 of the vehicle front structure 100 is not positioned in the collision load transmission path, the area behind the side frame 120, where the cross-member 180 is typically positioned, is freed from the cross-member 180 and can be used as a shock-absorbing area. This effectively suppresses movement and deformation of the cross-member 180 and the drive source MR caused by the input of the collision load, thereby improving the collision safety performance of the vehicle front structure 100.

[0065] On the other hand, Figure 1 、 Figure 5 and Figure 6 As shown, in this embodiment, the suspension support member 110 includes a rear end fixing portion 111 and a plate member 112. The rear end fixing portion 111 connects the rear end of the suspension support member 110 to the front pillar FP and / or the side sill SS of the vehicle, while the plate member 112 connects the side frame connection portion SLK and the rear end fixing portion 111 and extends in the vehicle length direction.

[0066] So, like Figure 1 and Figure 5As shown, in this embodiment, the suspension support member 110 can transmit collision loads input from the side frame 120 to the front pillar FP and / or side sill SS located at the rear of the vehicle, where the panel member 112 is connected to the side frame connection portion SLK. This allows the collision loads input from the side frame 120 to be distributed and transmitted over a wide area of ​​the rear end fixing portion 111 via the curtain surface of the panel member 112. By way of comparison, in a conventional structure in which collision loads are transmitted to the front pillar FP or side sill SS via the side frame 120, the collision loads are concentrated at the connection between the side frame 120 and the front pillar FP, requiring reinforcement around the connection area, which in turn increases costs.

[0067] On the other hand, Figure 1 and Figure 7 As shown, the front end of the lower cross member 160 and the front end of the connecting frame 150 are located at approximately the same position in the vehicle length direction. This arrangement forms a framework that supports the side frame 120 from below. When viewed from the front of the vehicle, this framework forms a continuous U-shaped cross-section, thereby controlling the direction in which the side frame 120 deforms in response to collision loads. Controlling the deformation direction of the side frame 120 specifically means, for example, preventing the side frame 120 from tilting in the vehicle width direction or vertical direction due to collision loads.

[0068] In addition, if Figure 1 and Figure 7 As shown in FIG. 1 , in this embodiment, since the lower frame 170 is arranged to extend parallel to the side frame 120, the collision load from the front of the vehicle can be dispersed and transmitted to the side frame 120 and the lower frame 170. Figure 1 As shown, because lower frame 170 is positioned within connecting frame 150 in the vehicle width direction, connecting frame 150 is not positioned in the collision load transmission path of lower frame 170, and thus no crushed debris is formed in front of connecting frame 150. In one embodiment, after lower frame 170 deforms due to the input of the collision load, the crushed debris of lower frame 170 is absorbed by moving toward lower cross member 160 and the rear of the vehicle. In other words, because connecting frame 150 is not positioned in the collision load transmission path of lower frame 170, the placement of connecting frame 150 does not hinder the movement of crushed debris of lower frame 170.

[0069] In addition, if Figure 2 and Figure 7As shown, in this embodiment, the side frame 120 includes an upper surface, a lower surface, an inner surface on the inner side in the vehicle width direction, and an outer surface on the outer side in the vehicle width direction. Furthermore, the suspension support member 110 includes an upper support portion 113 that supports the upper arm UA of the suspension device SPD, and a lower support portion 114 that supports the lower arm DA of the suspension device SPD. When viewed from the side of the vehicle, the upper support portion 113 is provided in a rear end region RB120 of the side frame 120, which is defined by a reference line extending along the vehicle length from the rear end of the upper surface of the side frame 120 and a reference line extending along the vehicle length from the rear end of the lower surface of the side frame 120. The lower support portion 114 is provided in a rear end region RB170 of the lower frame 170, which is defined by a reference line extending along the vehicle length from the rear end of the upper surface of the lower frame 170 and a reference line extending along the vehicle length from the rear end of the lower surface of the lower frame 170.

[0070] Generally speaking, in a vehicle in which the type of suspension device SPD is a double wishbone type, the upper arm UA and the lower arm DA of the suspension device SPD are designed to have strength and rigidity to support the up and down movement of the tire. In this way, through the above-mentioned configuration, the upper support portion 113 supporting the upper arm UA of the suspension device SPD can be set in the rear end area RB120 of the side frame 120 located on the collision load transmission path, and the lower support portion 114 supporting the lower arm DA of the suspension device SPD can be set in the rear end area RB170 of the lower frame 170 located on the collision load transmission path. As a result, both the upper arm UA and the lower arm DA of the suspension device SPD can provide a reinforcing effect of suppressing the deformation of the suspension support member 110 due to the collision load from the front of the vehicle, thereby making the front structure 100 of the vehicle have good collision safety performance.

[0071] On the other hand, in this embodiment, the side frame 120 is a substantially cylindrical member extruded from an aluminum material, and the suspension support member 110 is a large die-cast aluminum member having a plate-like member provided with a plurality of reinforcing ribs. Therefore, when a collision mode is assumed in which the side frame 120 deforms but the suspension support member 110 does not deform, it is necessary to configure a framework structure that directly transmits the collision load remaining after the deformation of the side frame 120 to the front pillar FP.

[0072] Therefore, if Figure 1 and Figure 7 As shown, in this embodiment, when viewed from the side of the vehicle, the plate member 112 has an upper rib UR extending from between the cross member connection portion CLK and the side frame connection portion SLK toward the rear of the vehicle, and a lower rib DR extending from below the side frame connection portion SLK toward the rear of the vehicle. Figure 1As shown, in this embodiment, the vehicle width direction inner portions of the upper rib UR and the lower rib DR are arranged in the same vehicle width direction as the inner surface of the side frame 120 near the side frame connection portion SLK, and the vehicle width direction outer portions of the upper rib UR and the lower rib DR are arranged in the same vehicle width direction as the outer surface of the side frame 120 near the side frame connection portion SLK. Figure 1 and Figure 7 As shown, in this embodiment, the distance of the upper rib UR of the suspension support member 110 in the vehicle width direction decreases toward the plate member 112 as it goes toward the rear of the vehicle.

[0073] Thus, through the above-described arrangement, the panel member 112, along with its upper and lower ribs UR and DR, forms a generally U-shaped framework, with its cross-section substantially identical to the cross-section formed by the upper, lower, and inner surfaces of the side frame 120. This allows the collision load remaining after deformation of the side frame 120 to be directly transmitted to the front pillar FP. Furthermore, the structure in which the distance of the upper ribs UR of the panel member 112 in the vehicle width direction decreases toward the plate-like component as it moves toward the rear of the vehicle, i.e., the structure in which the upper ribs UR decrease in the vehicle width direction, allows the collision load transmitted from the side frame 120 to be gradually distributed from the upper ribs UR to the plate-like component. This allows the collision load to be transmitted over a wide area of ​​the front pillar FP, thereby contributing to the excellent collision safety performance of the vehicle front structure 100.

[0074] In summary, in embodiments of the present invention, the vehicle front structure, through the relative positioning of the side frames, cross member, and drive source securing portion, allows for a configuration in which the cross member and drive source are not connected to the side frames. This allows for independent consideration and control of side frame deformation and drive source movement during a collision. Furthermore, in this embodiment, since the cross member is positioned above the side frame, supporting and securing the drive source in a manner that allows it to be elongated in the vehicle height direction, even when the drive source is substantially elliptical when viewed from the side, allows for a short overhang configuration in the vehicle front structure that reduces the space forward of the front wheel axle center. Furthermore, since the cross member is not located in the collision load transmission path, no crushing residue is generated forward of the cross member. Furthermore, when the area from the front end of the cross member to the rear of the vehicle serves as a storage area for crushed residues between the side frame connection portion and / or the upper frame connection portion, the entire area of ​​the side frame, which serves as an impact-absorbing member for absorbing collision loads, can be used as the impact-absorbing area, thereby achieving a short overhang device structure and suppressing the movement and deformation of the cross member and the drive source due to the input of the collision load, thereby achieving excellent collision safety performance.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vehicle front structure, characterized in that: include: a pair of left and right suspension support members for supporting the vehicle's suspension device; a side frame connected to the suspension support member and extending toward the front of the vehicle; a cross member connecting the pair of left and right suspension support members in the vehicle width direction, and the cross member being provided above the side frame and spaced apart from the side frame; as well as The driving source fixing portion is used to fix the driving source for driving the vehicle and is arranged on the crossbeam.

2. The vehicle front structure according to claim 1, wherein: The driving source fixing portion includes a first fixing portion provided on the crossbeam and a second fixing portion provided on the suspension support member. The driving source is provided on a reference line connecting the first fixing portion and the second fixing portion when viewed from a side of the vehicle.

3. The vehicle front structure according to claim 1, wherein: Also includes: an upper frame connected to the suspension support member and extending toward the front of the vehicle; as well as A vertical connecting piece connecting the front end of the upper frame and the front end of the side frame, The cross member is provided in a region defined by the upper frame and the side frames in a vehicle height direction when viewed from the side of the vehicle, and is spaced apart from the upper frame.

4. The vehicle front structure according to claim 3, wherein: Also includes: a crossbeam connecting portion connecting the suspension support member to a rear end portion of the crossbeam disposed at a rear end of the crossbeam; a side frame connecting portion connecting the suspension support member to a side frame rear end portion provided at a rear end of the side frame; as well as The upper rack connection part connects the suspension support member to the upper rack rear end portion provided at the rear end of the upper rack, The cross member connection portion is arranged at a position closer to the front of the vehicle than the side frame connection portion and / or the upper frame connection portion.

5. The vehicle front structure according to claim 4, wherein: Also includes: a connecting frame extending from a lower surface of the side frame toward a lower portion of the vehicle; as well as The lower cross member connects the left and right connecting frames in the vehicle width direction. The front end of the lower cross beam and the front end of the connecting frame are arranged at the same position in the vehicle length direction.

6. The vehicle front structure according to claim 5, characterized in that: Also includes: a lower frame connected to the lower cross member and extending toward the front of the vehicle, The down frame extends parallel to the side frame and is provided on an inner side of the connecting frame in the vehicle width direction.

7. The vehicle front structure according to claim 1, wherein: Also includes: a side frame connection portion, connecting the suspension support member to a side frame rear end portion provided at the rear end of the side frame, The suspension support member comprises: a rear end fixing portion connecting the rear end of the suspension support member to the front pillar and / or side member of the vehicle; as well as A plate member connects the side frame connection portion and the rear end fixing portion and extends in the vehicle length direction.

8. The vehicle front structure according to claim 7, wherein: The suspension support member has an upper support portion supporting an upper arm of the suspension device, The upper support portion is provided in a rear end region of the side frame when viewed from the side of the vehicle, and the rear end region of the side frame is defined by a reference line extending along the vehicle length direction from the rear end of the upper surface of the side frame and a reference line extending along the vehicle length direction from the rear end of the lower surface of the side frame.

9. The vehicle front structure according to claim 6, wherein: The suspension support member has a lower support portion supporting a lower arm of the suspension device, When viewed from the side of the vehicle, the lower support portion is arranged in a rear end area of ​​the lower frame, and the rear end area of ​​the lower frame is defined by a reference line extending from the rear end of the upper surface of the lower frame in the direction of the vehicle length and a reference line extending from the rear end of the lower surface of the lower frame in the direction of the vehicle length.

10. The vehicle front structure according to claim 8, wherein: The side frame includes an upper surface, a lower surface, an inner surface on the inner side in the vehicle width direction, and an outer surface on the outer side in the vehicle width direction. When viewed from the side of the vehicle, the plate member has an upper rib extending from between the cross member connecting portion and the side frame connecting portion toward the rear of the vehicle, and a lower rib extending from below the side frame connecting portion toward the rear of the vehicle. The vehicle width direction inner portions of the upper rib and the lower rib are provided on the same vehicle width direction as the inner surface of the side frame near the side frame connecting portion. Portions of the upper rib and the lower rib on the vehicle width direction outer side are provided at the same vehicle width direction location as the outer surface of the side frame near the side frame connecting portion.

11. The vehicle front structure according to claim 10, wherein: A distance between the upper ribs of the suspension support member in the vehicle width direction decreases toward the plate member as it moves toward the rear of the vehicle.

Citation Information

Patent Citations

  • Monolithic integrated MOS comparator circuit

    JP1983027424A