Vehicle front structure
The vehicle front structure uses angled support members to redirect and distribute collision forces laterally, improving safety during minor overlap collisions by increasing lateral forces and reducing impact.
Patent Information
- Application Number
- CN202510021761.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2024-01-12
- Filing Date
- 2025-01-07
- Publication Date
- 2025-07-15
AI Technical Summary
The existing vehicle front structure has insufficient collision safety performance during slight overlapping collisions, making it difficult to effectively absorb and disperse impact forces.
The second support member and a third support member are introduced in the front structure of the vehicle, the second support member is inclined toward the outside of the vehicle, and the third support member is inclined toward the inside of the vehicle, through which the collision load is transmitted and dispersed to increase the lateral force and avoid a huge impact.
The collision safety performance during slight overlapping collisions is improved, and the collision object passes through the side by increasing lateral force, reducing the impact on the vehicle.
Smart Images
Figure CN120308214A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a vehicle front structure. Background Art
[0002] In Japanese Unexamined Patent Application Publication No. 2012 - 166743, a vehicle front body structure including a protruding member is disclosed. The protruding member is provided on the outer side wall of the front side member so as to protrude outward in the vehicle width direction compared with the outer side wall of the front side member, and is provided such that the rear end portion is located on the vehicle body rear side compared with the front end portion on the vehicle body front side of the power unit in a top view, wherein the power unit is disposed on the inner side in the vehicle width direction of the front side member. Summary of the Invention
[0003] However, in a vehicle front structure in which a plurality of skeleton members of the vehicle front are manufactured by die - casting, preferably, the crash safety performance during a small overlap collision is improved.
[0004] An object of the present invention is to provide a vehicle front structure that improves the crash safety performance during a small overlap collision.
[0005] The vehicle front structure according to Technical Solution 1 includes: a vehicle compartment front wall portion provided at the vehicle front portion and partitioning the inside and outside of the vehicle compartment; a die - cast skeleton main body configured to include a pair of left and right suspension support portions, the pair of left and right suspension support portions being disposed on the vehicle front side of the vehicle compartment front wall portion and supporting the suspension; a first support member connecting the pair of left and right suspension support portions in the vehicle width direction; a second support member extending in the vehicle width direction, and the outer end portion in the vehicle width direction is fixed to the outer edge portion in the vehicle width direction of the skeleton main body at a position closer to the vehicle front side than the first support member, and the inner end portion in the vehicle width direction is connected to the first support member.
[0006] In the vehicle front structure according to Technical Solution 1, a second support member is provided. The outer end portion in the vehicle width direction of the second support member is fixed to the outer edge portion in the vehicle width direction of the skeleton main body at a position closer to the vehicle front side than the first support member, and the inner end portion in the vehicle width direction is connected to the first support member. Thus, during a small overlap collision (in the case where a frontal collision occurs with a small overlap amount in the vehicle width direction with respect to the vehicle, such as an obstacle), the collision load input to the skeleton main body is transmitted to the first support member via the second support member. Therefore, the lateral force (the force directed to the side opposite to the collision side in the vehicle width direction) generated with respect to the vehicle during a small overlap collision increases, so that the collision object passes through the side of the vehicle. As a result, it is possible to avoid a huge impact input to the vehicle during a small overlap collision, thereby improving the crash safety performance during a small overlap collision.
[0007] The vehicle front structure related to Technical Solution 2 is that, in the vehicle front structure described in Technical Solution 1, when viewed from above, the second support member inclines toward the front side of the vehicle as it tends toward the outer side in the vehicle width direction of the vehicle.
[0008] In the vehicle front structure related to Technical Solution 2, when viewed from above, the second support member inclines toward the front side of the vehicle as it tends toward the outer side in the vehicle width direction of the vehicle, so that the second support member is arranged in a manner that it inclines toward the inner side in the vehicle width direction as it tends toward the rear of the vehicle. Therefore, in a small overlap collision, a part of the collision load input to the frame body from the front of the vehicle is transmitted toward the inner side in the vehicle width direction through the second support member. As a result, the lateral force generated with respect to the vehicle in a small overlap collision can be increased.
[0009] The vehicle front structure related to Technical Solution 3 is that, in the vehicle front structure described in Technical Solution 1 or Technical Solution 2, there is further a third support member which is fixed to the frame body at a position closer to the front side of the vehicle than the second support member and which inclines toward the inner side in the vehicle width direction as it tends toward the front of the vehicle when viewed from above.
[0010] In the vehicle front structure described in Technical Solution 3, there is further a third support member which is fixed to the frame body at a position closer to the front side of the vehicle than the second support member and which inclines toward the inner side in the vehicle width direction as it tends toward the front of the vehicle when viewed from above. Thereby, the part of the frame body closer to the front side of the vehicle than the second support member is strengthened. Therefore, when the collision object collides with the part of the frame body closer to the front side of the vehicle than the second support member in a small overlap collision, the collision load input to the frame body is transmitted to the second support member via the third support member. As a result, the lateral force generated with respect to the vehicle in a small overlap collision can be efficiently increased.
[0011] The vehicle front structure related to Technical Solution 4 is that, in the vehicle front structure described in Technical Solution 3, the outer end in the vehicle width direction of the third support member is fixed to the frame body at the same position as the outer end in the vehicle width direction of the second support member.
[0012] In the vehicle front structure according to the fourth aspect of the technical solution, the outer end portion in the vehicle width direction of the third support member is fixed to the frame main body at the same position as the outer end portion in the vehicle width direction of the second support member. Thus, when viewed from above, it is formed into a substantially L shape by the third support member and the second support member. Therefore, in the case where the collision object collides with the frame main body at a position closer to the vehicle front side than the second support member during a small overlap collision, the collision load is transmitted to the second support member after being borne by the third support member. As a result, it is possible to efficiently increase the lateral force generated with respect to the vehicle during a small overlap collision.
[0013] The vehicle front structure according to the fifth aspect of the technical solution is such that, in the vehicle front structure according to any one of the first to fourth aspects of the technical solution, the outer edge portion in the vehicle width direction of the frame main body is inclined inward in the vehicle width direction as it approaches the vehicle front when viewed from above.
[0014] In the vehicle front structure according to the fifth aspect of the technical solution, the outer edge portion in the vehicle width direction of the frame main body is inclined inward in the vehicle width direction as it approaches the vehicle front when viewed from above. Thus, during a small overlap collision, the input direction of the collision load to the frame main body is set to a direction toward the inside in the vehicle width direction. Therefore, it is possible to increase the lateral force generated with respect to the vehicle during a small overlap collision.
[0015] As described above, according to the vehicle front structure of the present invention, it is possible to improve the collision safety performance during a small overlap collision. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The features, advantages, and technical and industrial significance of exemplary embodiments of the present invention will be described with reference to the accompanying drawings, in which like reference numerals represent like elements, wherein:
[0017] Figure 1 FIG. is a perspective view schematically showing the vehicle front structure according to the embodiment.
[0018] Figure 2 FIG. is a plan view showing the vehicle front structure according to the embodiment.
[0019] Figure 3 FIG. is an explanatory view for explaining the operation during a small overlap collision of the vehicle front structure according to the embodiment.
[0020] Figure 4 FIG. is a plan view showing the vehicle front structure according to another embodiment. DETAILED DESCRIPTION OF THE INVENTION
[0021] Hereinafter, the vehicle front structure according to the embodiment will be described with reference to the accompanying drawings. In each of the drawings, the arrow mark UP indicates the upper side in the vertical direction of the vehicle, the arrow mark FR indicates the front side in the front-rear direction of the vehicle, and the arrow mark LH indicates the left side in the width direction (left-right direction) of the vehicle.
[0022] Structure of the vehicle front structure 5
[0023] As Figure 1 and Figure 2 shown, the vehicle front structure 5 includes a frame main body 10, a first support member 21, a second support member 22, and a third support member 23.
[0024] Frame main body 10
[0025] The frame main body 10 is made by die-casting and is configured to include a cabin front wall portion 12 and a suspension support portion 14. In other words, the cabin front wall portion 12 and the suspension support portion 14 are integrated and manufactured by die-casting.
[0026] Cabin front wall portion 12
[0027] The cabin front wall portion 12 is provided at the front part of the vehicle and divides the inside and outside of the cabin. The cabin front wall portion 12 has a plate thickness direction substantially in the vehicle front-rear direction and is formed in a plate shape extending in the vehicle width direction. The cabin front wall portion 12 is provided as the rear wall of the front compartment 17 which is a space for arranging components such as a prime mover.
[0028] Suspension support portion 14
[0029] The suspension support portion 14 is formed in a plate shape extending forward in the vehicle from both ends in the vehicle width direction of the cabin front wall portion 12. The suspension support portion 14 is provided in a pair on the front side in the vehicle of the cabin front wall portion 12 in the vehicle width direction and supports the suspension 18 (refer to Figure 1 ).
[0030] The suspension support portion 14 includes a main body portion 14A, a suspension mounting portion 14B, and a flange portion 14D.
[0031] The main body portion 14A is formed in a curved shape protruding inward in the vehicle width direction so as to accommodate the suspension 18 outside the vehicle width direction of the main body portion 14A. The front end and the rear end in the vehicle of the main body portion 14A are mounted on a suspension member 30 provided below the main body portion 14A in the vehicle.
[0032] The suspension mounting portion 14B is provided near the center in the vehicle width direction of the main body portion 14A and near the center in the vehicle front-rear direction of the main body portion 14A. The suspension mounting portion 14B is formed in a plate shape with the vehicle up-down direction as the plate thickness direction. When viewed from above, a mounting opening 14C is formed at the center in the vehicle front-rear direction of the suspension mounting portion 14B, and an upper bracket (not shown) of the suspension 18 is mounted in the mounting opening 14C.
[0033] The flange portion 14D is provided on the outer side in the vehicle width direction of the main body portion 14A. The flange portion 14D is formed in a plate shape with the vehicle up-down direction as the plate thickness direction. As Figure 2 shown, when viewed from above, the flange portion 14D extends in the vehicle front-rear direction at a position behind the mounting opening 14C in the vehicle front-rear direction. In addition, as Figure 2 shown, when viewed from above, the flange portion 14D is inclined toward the inner side in the vehicle width direction as it approaches the vehicle front at a position in front of the mounting opening 14C in the vehicle front-rear direction. In other words, when viewed from above, the outer edge portion in the vehicle width direction of the frame main body 10 extends in the vehicle front-rear direction at a position behind the suspension 18 in the vehicle front-rear direction. Moreover, when viewed from above, the outer edge portion in the vehicle width direction of the frame main body 10 is inclined toward the inner side in the vehicle width direction as it approaches the vehicle front at a position in front of the suspension 18 in the vehicle front-rear direction.
[0034] The first support member 21
[0035] As Figure 1 and Figure 2 shown, the first support member 21 is provided in a manner bridging between a pair of left and right suspension mounting portions 14B. In other words, the first support member 21 connects the pair of left and right suspension support portions 14 in the vehicle width direction. The first support member 21 is disposed slightly in front of the center of the mounting opening 14C.
[0036] The first support member 21 is formed, for example, of a steel pipe with a rectangular cross section. The first support member 21 is formed to extend in the vehicle width direction. Both ends in the vehicle width direction of the first support member 21 are mounted on the suspension mounting portion 14B by bolts S, for example. Additionally, the first support member may also connect the side walls extending downward from the inner ends in the vehicle width direction of the suspension mounting portion 14B in the vehicle width direction.
[0037] The second support member 22
[0038] The second support member 22 is provided in a manner bridging between the suspension mounting portion 14B and the flange portion 14D. The second support member 22 is disposed in front of the center of the mounting opening 14C.
[0039] The second support member 22 is formed, for example, of a steel pipe having a rectangular cross-section. When viewed from above, the second support member 22 is inclined toward the front side of the vehicle as it tends toward the outer side in the vehicle width direction. The outer end portion of the second support member 22 in the vehicle width direction is fixed, for example, by bolts S to the flange portion 14D at a position closer to the front side of the vehicle than the first support member 21. Further, the inner end portion of the second support member 22 in the vehicle width direction is mounted, for example, by bolts S to the suspension mounting portion 14B with the outer end portion of the first support member 21 in the vehicle width direction interposed therebetween. Additionally, the outer end portion of the first support member 21 in the vehicle width direction and the inner end portion of the second support member 22 in the vehicle width direction may also be jointly joined together by common bolts S.
[0040] The third support member 23
[0041] The third support member 23 is provided so as to bridge between the flange portion 14D and the lower portion of the main body portion 14A. The third support member 23 is disposed at a position closer to the front side of the vehicle than the center of the mounting opening 14C. The third support member 23 is disposed at a position closer to the front side of the vehicle than the first support member 21 and the second support member 22.
[0042] The third support member 23 is formed, for example, of a steel pipe having a rectangular cross-section. When viewed from above, the third support member 23 is inclined toward the inner side in the vehicle width direction as it tends toward the front side of the vehicle. When viewed in side elevation, the third support member 23 is inclined toward the lower side of the vehicle as it tends toward the front side of the vehicle. The outer end portion of the third support member 23 in the vehicle width direction is fixed, for example, by bolts S to the suspension support portion 14 at a position substantially the same as the outer end portion of the second support member 22 in the vehicle width direction with the second support member 22 interposed therebetween. Further, the inner end portion of the third support member 23 in the vehicle width direction is fixed, for example, by bolts S to the lower portion of the main body portion 14A. Additionally, the outer end portion of the third support member 23 in the vehicle width direction and the outer end portion of the second support member 22 in the vehicle width direction may also be jointly joined together by common bolts S.
[0043] Operation of the vehicle front structure 5 during a minor overlap collision
[0044] During Figure 3In [the figure], a minor overlap collision is shown in which a collision object 50 such as an obstacle undergoes a frontal collision with a relatively small amount of overlap in the vehicle width direction with respect to the vehicle. During this minor overlap collision, the collision object 50 collides with the flange portion 14D at the vehicle front side of the suspension support portion 14, and the flange portion 14D inclines toward the inner side in the vehicle width direction as it approaches the vehicle front when viewed from above. When the collision object 50 collides with the flange portion 14D, the collision load from the collision object 50 is transmitted from the flange portion 14D to the second support member 22. At this time, the collision load from the collision object 50 is also transmitted to the third support member 23.
[0045] The collision load transmitted to the second support member 22 is transmitted from the second support member 22 to the first support member 21. In addition, the collision load transmitted to the third support member 23 is transmitted to the first support member 21 via the second support member 22. As a result, a lateral force acting on the vehicle in the vehicle width direction toward the side opposite to the collision side is generated. And by utilizing the generated lateral force, the vehicle is moved in the vehicle width direction, so that the collision object 50 passes by from the side of the vehicle.
[0046] Act
[0047] The vehicle front structure 5 according to the embodiment has a cabin front wall portion 12, a die-cast skeleton main body 10 configured to include a pair of left and right suspension support portions 14, a first support member 21, and a second support member 22 (refer to Figure 1 ). The cabin front wall portion 12 is provided at the front of the vehicle and divides the inside and outside of the cabin. The pair of left and right suspension support portions 14 are arranged at the vehicle front side of the cabin front wall portion 12 and support the suspension 18. The first support member 21 connects the pair of left and right suspension support portions 14 in the vehicle width direction. The second support member 22 extends in the vehicle width direction, and the outer end in the vehicle width direction is fixed to the outer edge portion in the vehicle width direction of the skeleton main body 10 at a position closer to the vehicle front than the first support member 21, and the inner end in the vehicle width direction is connected to the first support member 21.
[0048] The vehicle front structure 5 according to the embodiment includes a second support member 22. The outer end portion of the second support member 22 in the vehicle width direction is fixed to the outer edge portion of the frame main body 10 on the vehicle front side compared with the first support member 21, and the inner end portion in the vehicle width direction is connected to the first support member 21. Thus, in a small overlap collision, the collision load input to the frame main body 10 is transmitted to the first support member 21 via the second support member 22. Therefore, in a small overlap collision, the lateral force generated for the vehicle increases, so that the collision object 50 passes by the side of the vehicle. As a result, it is possible to avoid a huge impact input to the vehicle in a small overlap collision, thereby improving the collision safety performance in a small overlap collision.
[0049] In the vehicle front structure 5 according to the embodiment, the second support member 22 is inclined toward the vehicle front side as it tends to the vehicle outer side in a top view (see Figure 2 ).
[0050] Since the second support member 22 is inclined toward the vehicle front side as it tends to the vehicle outer side in a top view, the second support member 22 is arranged in such a manner that it is inclined toward the vehicle width direction inner side as it tends to the vehicle rear side. Therefore, in a small overlap collision, a part of the collision load input to the frame main body 10 from the vehicle front is transmitted to the vehicle width direction inner side through the second support member 22. As a result, it is possible to increase the lateral force generated for the vehicle in a small overlap collision.
[0051] The vehicle front structure 5 according to the embodiment further includes a third support member 23. The third support member 23 is fixed to the frame main body 10 at a position closer to the vehicle front side than the second support member 22, and is inclined toward the vehicle width direction inner side as it tends to the vehicle front side in a top view (see Figure 2 ).
[0052] The vehicle front structure 5 according to the embodiment further includes a third support member 23. The third support member 23 is fixed to the frame main body 10 at a position closer to the vehicle front side than the second support member 22, and is inclined toward the vehicle width direction inner side as it tends to the vehicle front side in a top view. Thus, the portion of the frame main body 10 closer to the vehicle front side than the second support member 22 can be strengthened. Therefore, in the case where the collision object 50 collides with the portion of the frame main body 10 closer to the vehicle front side than the second support member 22 in a small overlap collision, the collision load input to the frame main body 10 is transmitted to the second support member 22 via the third support member 23. As a result, it is possible to efficiently increase the lateral force generated for the vehicle in a small overlap collision.
[0053] In the vehicle front structure 5 according to the embodiment, the outer end portion in the vehicle width direction of the third support member 23 is fixed to the frame main body 10 at the same position as the outer end portion in the vehicle width direction of the second support member 22 (see Figure 2 ).
[0054] By fixing the outer end portion in the vehicle width direction of the third support member 23 to the frame main body 10 at the same position as the outer end portion in the vehicle width direction of the second support member 22, an L-shape is formed by the third support member 23 and the second support member 22 in a top view. Therefore, when the collision object 50 collides with the vehicle front side of the frame main body 10 compared to the second support member 22 in a small overlap collision, the collision load is transmitted to the second support member 22 after being borne by the third support member 23. As a result, the lateral force generated with respect to the vehicle in a small overlap collision can be efficiently increased.
[0055] In the vehicle front structure 5 according to the embodiment, the outer edge portion in the vehicle width direction of the frame main body 10 is inclined inward in the vehicle width direction as it approaches the vehicle front in a top view (see Figure 2 ).
[0056] By the outer edge portion in the vehicle width direction of the frame main body 10 being inclined inward in the vehicle width direction as it approaches the vehicle front in a top view, the input direction of the collision load to the frame main body 10 in a small overlap collision is set to the direction toward the inside in the vehicle width direction. Therefore, the lateral force generated with respect to the vehicle in a small overlap collision can be increased.
[0057] As described above, the vehicle front structure according to the embodiment has been described based on the embodiment. However, the specific structure is not limited to this embodiment, and design changes and the like are allowed as long as they do not depart from the gist of the invention related to each claim in the claims.
[0058] In the embodiment, the inner end portion in the vehicle width direction of the second support member 22 is mounted on the suspension mounting portion 14B with the outer end portion in the vehicle width direction of the first support member 21 interposed therebetween. Further, in the embodiment, the outer end portion in the vehicle width direction of the third support member 23 is fixed to the suspension support portion 14 with the second support member 22 interposed therebetween. An example is shown in the embodiment. However, as Figure 4 shown, the inner end portion in the vehicle width direction of the second support member 22 may also be mounted on the suspension mounting portion 14B in a manner connected to the first support member 21 near the outer end portion in the vehicle width direction of the first support member 21. Further, the outer end portion in the vehicle width direction of the third support member 23 may also be mounted on the flange portion 14D at a position in front of the outer end portion in the vehicle width direction of the second support member 22.
[0059] In an embodiment, an example is shown in which the second support member 22 inclines toward the front side of the vehicle as it tends toward the outer side in the vehicle width direction when viewed from above. However, the second support member may also incline toward the rear side of the vehicle as it tends toward the outer side in the vehicle width direction when viewed from above, or may extend in the vehicle width direction.
[0060] In an embodiment, an example is shown in which the first support member 21, the second support member 22, and the third support member 23 are formed of steel pipes with a rectangular cross-section. However, the first support member, the second support member, and the third support member are not limited to this form, and may be, for example, plate-shaped brackets.
[0061] In an embodiment, an example is shown in which the first support member 21, the second support member 22, and the third support member 23 are mounted on the frame main body 10 by bolts S. However, the first support member, the second support member, and the third support member are not limited to this form, and may be, for example, mounted on the frame main body by welding.
[0062] In an embodiment, an example is shown in which the vehicle front structure 5 includes the first support member 21, the second support member 22, and the third support member 23. However, the vehicle front structure may not include the third support member 23.
[0063] In an embodiment, an example is shown in which the first support member 21, the second support member 22, and the third support member 23 are configured separately. However, at least two of the first support member, the second support member, and the third support member may also be integrally formed.
[0064] In an embodiment, an example is shown in which the first support member 21 is provided so as to span between a pair of left and right suspension mounting portions 14B. However, the first support member only needs to be provided on a pair of left and right suspension support portions 14.
[0065] In an embodiment, an example is shown in which the outer edge portion in the vehicle width direction of the frame main body 10 is provided as a flange portion 14D. However, the outer edge portion in the vehicle width direction of the frame main body may also be the outer edge portion in the vehicle width direction of the main body portion 14A.
[0066] In an embodiment, an example is shown in which the frame main body 10 is constituted by the front wall portion 12 of the passenger compartment and the suspension support portion 14. However, the frame main body can include other components constituting the vehicle front structure.
Claims
1. A vehicle front structure, comprising: A front wall portion of the carriage, which is provided at the front of the vehicle and divides the inside and outside of the carriage; A die-cast skeleton main body, which is configured to include a pair of left and right suspension support portions, and the pair of left and right suspension support portions are arranged on the vehicle front side of the front wall portion of the carriage and support the suspension; A first support member, which connects the pair of left and right suspension support portions in the vehicle width direction; A second support member, which extends in the vehicle width direction, and the outer end portion in the vehicle width direction is fixed to the outer edge portion in the vehicle width direction of the skeleton main body at a position closer to the vehicle front side than the first support member, and the inner end portion in the vehicle width direction is connected to the first support member.
2. The vehicle front structure according to claim 1, wherein: The second support member is inclined toward the vehicle front side as it tends to the outer side in the vehicle width direction of the vehicle when viewed from above.
3. The vehicle front structure according to claim 1, wherein: It further has a third support member, which is fixed to the skeleton main body at a position closer to the vehicle front side than the second support member, and is inclined toward the inner side in the vehicle width direction as it tends to the vehicle front side when viewed from above.
4. The vehicle front structure according to claim 3, wherein: The outer end portion in the vehicle width direction of the third support member is fixed to the skeleton main body at the same position as the outer end portion in the vehicle width direction of the second support member.
5. The vehicle front structure according to claim 1, wherein: The outer edge portion in the vehicle width direction of the skeleton main body is inclined toward the inner side in the vehicle width direction as it tends to the vehicle front side when viewed from above.
Citation Information
Patent Citations
Vehicle front structure
JP2012166743A