Front side vehicle body structure for vehicle
By integrating the front side components, shock absorber housing and A-pillar into an integrated design, combined with the fender skirt components and connecting brackets, the contradiction between weight reduction and rigidity in the vehicle's front side body structure is resolved, achieving uniform load distribution and passenger protection.
Patent Information
- Application Number
- CN202411305725.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2024-04-23
- Filing Date
- 2024-09-19
- Publication Date
- 2025-10-24
AI Technical Summary
The existing vehicle front side body structure is difficult to meet the stiffness requirements while reducing weight, and it is difficult to evenly distribute the load during a collision, resulting in easy damage to the structure and injury to passengers.
The front side members, shock absorber housing and A-pillar are designed as an integrated whole. The fender skirt members are combined with connecting brackets and assembly slots to form an integrated structure to evenly distribute the load, and rib structures are added at key positions to enhance rigidity.
It achieves the goal of meeting stiffness requirements while reducing weight, can evenly distribute loads during a collision, protect passenger safety, simplify the manufacturing process and reduce the risk of weld surface cracking.
Smart Images
Figure CN120828877A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present disclosure relates to a front side vehicle body structure constituting a front side portion of a vehicle body. BACKGROUND
[0002] A front side vehicle body structure for a vehicle can be configured by assembling fifty or more components. In order to reduce the weight of a vehicle, a method of minimizing the number of components of a front side vehicle body structure for a vehicle is being studied.
[0003] When the weight of a front side vehicle body structure for a vehicle is lightened, the rigidity can be reduced. SUMMARY
[0004] Therefore, there is a need for a front side vehicle body structure for a vehicle that can reduce the weight while satisfying the minimum rigidity requirement of a front side vehicle body structure for a vehicle. Therefore, the present disclosure has been made in consideration of the above-mentioned problems occurring in the related art. The present disclosure aims to provide a front side vehicle body structure for a vehicle that can reduce the weight of a front side vehicle body structure for a vehicle, can satisfy the rigidity requirement capable of protecting an occupant in the case of a vehicle frontal collision, and can include a fender apron member capable of uniformly dispersing a load in the case of a vehicle collision.
[0005] According to an aspect, there is provided a front side vehicle body structure for a vehicle. The front side vehicle body structure includes a front side member extending in a longitudinal direction of the vehicle; a shock absorber housing provided between a front end and a rear end of the front side member and connected to the front side member; and an A pillar connected to the rear end of the front side member. The front side member, the shock absorber housing, and the A pillar are integrally formed. A front end of a fender apron member is connected to the front end of the front side member, and a rear end of the fender apron member is inserted into an assembly groove of the shock absorber housing.
[0006] A connection bracket to which the front end of the fender apron member is connected can be provided at the front end of the front side member.
[0007] The assembly groove can be provided at an outer portion of the shock absorber housing and face an outer side. The fender apron member can be inserted into the assembly groove, and one or more points at which the fender apron member and the assembly groove are adjacent to each other can be coupled to each other.
[0008] A cross-sectional area of the rear end of the fender apron member can be greater than a cross-sectional area of the front end of the fender apron member.
[0009] At the front end of the front side member, a space can be provided at an intersection of a first horizontal rib and a first vertical rib.
[0010] A connection bracket can be provided or formed at the front end of the front side member, and the front end of the fender skirt member can be connected to the connection bracket. The front end of the fender skirt member can be connected to one end of the connection bracket. The other end of the connection bracket can be provided or formed on the same plane as the foremost rib among the first vertical ribs formed at the front end of the front side member.
[0011] An X-shaped rib having an X shape can be formed at the rear end of the fitting groove of the shock absorber housing.
[0012] In any one or more of the front side member, the shock absorber housing, and the A pillar, a space can be formed at the intersection of the second horizontal rib and the second vertical rib.
[0013] The upper end surface of the fender skirt member can be positioned higher or lower than the upper end surface of the shock absorber housing.
[0014] The fender skirt member can have a circular cross section or a polygonal cross section having four or more corners.
[0015] According to the present disclosure, the fender skirt member, which can individually disperse loads uniformly in the event of a vehicle collision, can be separately provided during the process of integrally forming the front side member, the shock absorber housing, and the A pillar, which can simplify the shape of a mold. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 and Figure 2 is a perspective view of a front side vehicle body structure for a vehicle according to an embodiment of the present disclosure.
[0017] Figure 3 is a view illustrating Figure 1 and Figure 2 a main load path of the front side vehicle body structure for a vehicle.
[0018] Figure 4 is an enlarged view illustrating the front side member formed with a connection bracket.
[0019] Figure 5 is a view of a state in which the fender skirt member is inserted into the fitting groove.
[0020] Figure 6 is an enlarged cross-sectional view of a state in which the fender skirt member and the fitting groove abut each other.
[0021] Figure 7 is a side view of a front side vehicle body structure for a vehicle according to an embodiment of the present disclosure. DETAILED DESCRIPTION
[0022] Hereinafter, the embodiments disclosed in the present specification are described in detail with reference to the accompanying drawings. Throughout the specification, the same or similar constituent elements are given the same reference numerals, and repeated description thereof is omitted.
[0023] In the description of the embodiments disclosed in the present specification, when it is determined that a detailed description of the related art will obscure the embodiments disclosed in the present specification, a detailed description of the related art has been omitted. Also, it should be understood that the accompanying drawings are provided only for more complete understanding of the embodiments disclosed in the present specification by those of ordinary skill in the art. The technical spirit disclosed in the present specification is not limited to the accompanying drawings, and includes all modifications, equivalents, and alternatives included in the spirit and technical scope of the present disclosure.
[0024] The terms including ordinal numbers, such as "first," "second," or the like, can be used to describe various constituent elements, but the constituent elements are not limited by the terms. The terms are used only to distinguish one constituent element from another constituent element.
[0025] The singular expression includes the plural expression, unless it is clearly described otherwise in the context.
[0026] When components, devices, elements, etc. of the present disclosure are described as having a use or performing an operation, function, etc., the components, devices, or elements should be construed as being "configured to" satisfy the use or perform the operation or function.
[0027] In the present specification, it should be understood that the terms "include," "comprise," "have," or other variants thereof are inclusive, thus defining the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.
[0028] In the following description, the suffixes "module," "unit," "part," and "portion" are used or are interchangeable to facilitate description. The suffixes themselves have no particular meaning or function.
[0029] When one constituent element is described as being "coupled" or "connected" to another constituent element, it should be understood that the one constituent element can be directly coupled or connected to the other constituent element. However, intervening constituent elements can also be present therebetween. When one constituent element is described as being "directly coupled to" or "directly connected to" another constituent element, it should be understood that there are no intervening constituent elements between the constituent elements.
[0030] Figure 1 and Figure 2 is a perspective view of a front side body structure for a vehicle according to an embodiment of the present disclosure.
[0031] Reference Figure 1 and Figure 2 A front side vehicle body structure according to embodiments of the present disclosure for a vehicle includes a front side member 100, a shock absorber housing 300, and an A pillar 500. In particular, the front side vehicle body structure for a vehicle is manufactured by integrating the front side member 100, the shock absorber housing 300, and the A pillar 500 together.
[0032] More specifically, the front side vehicle body structure for a vehicle refers to a vehicle side structure extending from a front end of a vehicle to a rear end of the vehicle. In the event of a frontal collision of the vehicle, the front side vehicle body structure for a vehicle can absorb a load (energy) and evenly disperse the load to the entire vehicle body, thereby protecting the passengers from the collision.
[0033] In addition to the front side member, the shock absorber housing, and the A pillar, the front side vehicle body structure for a vehicle can be manufactured by welding various components. In this process, about thirty to fifty or more components can be coupled by welding.
[0034] The method of manufacturing the front side vehicle body structure for a vehicle by using welding requires the formation of many flanges to couple the components. This increases the weight of the front side vehicle body structure. In addition, many components need to be manufactured separately, which increases the time and number of processes required to manufacture the components and the vehicle body structure.
[0035] In the present disclosure, in order to solve the above-described problems, certain parts of the front side vehicle body structure for a vehicle can be integrated together, i.e., integrally formed or provided as one or a one-piece structure. This can reduce the number of processes of welding components and reduce the weight of the front side vehicle body structure for a vehicle.
[0036] In particular, the front side member 100, the shock absorber housing 300, and the A pillar 500, which occupy a large portion of the volume of the front side vehicle body structure for a vehicle, are integrated.
[0037] According to the method, the front side member 100, the shock absorber housing 300, and the A pillar 500, which occupy a large portion of the volume of the front side vehicle body structure for a vehicle, are integrated, which can minimize the number of welding surfaces.
[0038] The probability of a welding surface breaking due to a load increases as the number of welding surfaces increases. The breaking of a welding surface makes it difficult to transfer a load, and concentrates an excessive load on a specific portion of the structure. For this reason, another welding surface can break, which makes it more difficult to disperse the load.
[0039] However, the above-described method is advantageous in minimizing the number of welding surfaces and appropriately transferring and dispersing a load.
[0040] In the front side vehicle body structure for a vehicle according to the present disclosure, a left front side vehicle body and a right front side vehicle body can be symmetrically provided and connected to each other by a cross bar or the like. A space in the front side vehicle body can define an engine compartment or a space in which power electronics (PE) components of an electric vehicle are embedded.
[0041] Meanwhile, the fender skirt member 200 can be separately provided and constitute a front side vehicle body structure for a vehicle. Specifically, a front end of the fender skirt member 200 can be connected to a front end of the front side member 100. A rear end of the fender skirt member 200 can be inserted into a fitting groove 380 formed in the shock absorber housing 300, thereby constituting a front side vehicle body structure for a vehicle.
[0042] The separately provided fender skirt member 200 can constitute a main path along which a load is dispersed when a vehicle collides. Referring to Figure 3 , an impact applied to the front side member 100 can be transmitted to the A pillar 500 (A) through the fender skirt member 200 and the shock absorber housing 300.
[0043] In addition, an impact applied to the front side member 100 can be directly transmitted to the A pillar 500 (B) through the front side member 100.
[0044] A connection bracket 150 can be formed at a front end of the front side member 100, and a front end of the fender skirt member 200 can be connected to the connection bracket 150. Figure 4 is an enlarged view illustrating the front side member formed with the connection bracket. Figure 5 is a view illustrating a state in which the fender skirt member is inserted into the fitting groove.
[0045] Referring to Figure 4 and Figure 5 , the front end of the fender skirt member 200 provided as a separate component is connected to the front end of the front side member 100. The rear end of the fender skirt member 200 is connected to the shock absorber housing 300 through the fitting groove 380.
[0046] Meanwhile, in order to secure the rigidity of the front side vehicle body structure for a vehicle having an open cross section, a first horizontal rib 21 and a first vertical rib 22 can be formed at a front end of the front side member 100. The first horizontal rib 21 and the first vertical rib 22 can effectively disperse a stress applied to a vehicle body, partially absorb the stress, and improve the rigidity of the open cross section.
[0047] In addition, the space defined by the first horizontal rib 21 and the first vertical rib 22 can absorb the load generated by the collision while providing space for the vehicle body to deform due to the collision. In this case, the first horizontal rib 21 and the first vertical rib 22 are formed to face the outer side of the vehicle, and the space defined by the first horizontal rib 21 and the first vertical rib 22 can be formed to face the outer side of the vehicle.
[0048] In this case, in order to uniformly transmit the load applied by the frontal collision of the vehicle to the entire vehicle body, the formation position of the first vertical rib 22 may be limited. Figure 4 , it can be determined that the front end of the fender skirt member 200 is connected to one end of the connecting bracket 150. The other end of the connecting bracket 150 is formed or provided on the same plane as a portion of the foremost first vertical rib 22 formed at the front end of the front side member 100.
[0049] The two frontmost first vertical ribs 22 and the two spaced apart portions of the other end of the connecting bracket 150 may be respectively located on the same plane. The other end of the connecting bracket 150 and the front end of the front side member 100 may extend in the height direction of the vehicle, thereby constituting parts of the connecting bracket 150.
[0050] When the formation positions of the first vertical ribs 22 are restricted in consideration of the above-mentioned relationship with other components, the collision load can be evenly distributed throughout the vehicle body compared to a case where the first vertical ribs are randomly arranged.
[0051] In addition, the front end of the fender skirt member 200 is coupled to the connection bracket 150 in the front / rear direction, which can ensure a supporting force against a front collision load.
[0052] Meanwhile, a fitting groove 380 may be formed outside the shock absorber housing 300 toward the vehicle exterior. The fender skirt member 200 may be inserted into the fitting groove 380 so that one or more points where the fender skirt member 200 and the fitting groove 380 abut each other may be coupled to each other.
[0053] Figure 6 3 is a cross-sectional view of a state in which the fender skirt member 200 and the fitting groove 380 are adjacent to each other. Figure 6 The fender skirt member 200 may be inserted into the assembly groove 380, and three surfaces of the fender skirt member 200 may abut the assembly groove 380. The fender skirt member 200 inserted into the assembly groove 380 may be coupled to the shock absorber housing 300 in various ways, such as surface welding or bonding.
[0054] When the surfaces adjacent in the height direction are coupled to each other, the upward / downward load of the shock absorber housing 300 can be supported. When the surfaces adjacent in the width direction are coupled to each other, the outward load can be supported.
[0055] The cross-sectional area of the rear end of the fender skirt member 200 may be larger than the front end of the fender skirt member 200. Figure 7 The cross-sectional area of the fender skirt member 200 can increase as the fender skirt member 200 extends rearward. Because the cross-sectional area increases toward the rear side of the fender skirt member 200, the load applied to the front side of the fender skirt member 200 can be evenly distributed without being concentrated at a specific point. As a result, the load can be effectively distributed throughout the vehicle body.
[0056] Depending on the design of the vehicle, the design of the shock absorber housing 300, or changes in the movement path of the load, the upper end surface of the fender skirt member 200 may be positioned higher than the upper end surface of the shock absorber housing 300. Alternatively, the upper end surface of the fender skirt member 200 may be positioned lower than the upper end surface of the shock absorber housing 300.
[0057] Furthermore, the closed cross-sectional shape of the fender skirt member 200 may be a quadrilateral, a circular cross-sectional shape, or a polygonal cross-sectional shape having four or more corners. The shape of the fitting groove 380 may be changed according to the closed cross-sectional shape of the fender skirt member 200. Therefore, the fender skirt member 200 may be smoothly or easily inserted into and coupled to the fitting groove 380.
[0058] At the same time, reference Figure 7 , it can be determined that the space is formed by the plurality of second horizontal ribs 11 and the plurality of second vertical ribs 12, which are formed to intersect in any one or more of the front side member 100, the shock absorber housing 300 and the A-pillar 500 of the integrally formed front side body structure for the vehicle.
[0059] In the event of a frontal collision, the portion to which a load is first applied is the front end of the front side member 100. Therefore, the front end of the front side member 100 needs to appropriately transmit and disperse the load while being sufficiently deformed.
[0060] To this end, the space formed by the plurality of ribs, i.e., the space formed by the spacing and intersection of the first horizontal ribs 21 and the first vertical ribs 22 starting from the front end of the front side member 100, allows the front side member 100 to fully deform under the load caused by the vehicle frontal collision.
[0061] In other words, sufficient deformation space is required to allow the front side member 100 to deform due to the load. The front side member 100 can fully deform through the space defined by the first horizontal rib 21 and the first vertical rib 22, and the space defined by the second horizontal rib 11 and the second vertical rib 12. Therefore, the load can be effectively transmitted to the A-pillar 500.
[0062] In addition, the oblique rib 13 can be additionally formed in any one or more of the front side member 100, the shock absorber housing 300, and the A pillar 500, and pass through the intersection between the second horizontal rib 11 and the second vertical rib 12.
[0063] Since the space defined by the second horizontal rib 11 and the second vertical rib 12 is partitioned by the oblique rib 13 additionally formed, the cross-sectional area of the vehicle body can be increased. Accordingly, the front side body for a vehicle can ensure higher rigidity.
[0064] If the oblique rib 13 is additionally provided, the front side body for a vehicle can additionally obtain rigidity, so that the degree of deformation caused by a load can be reduced. Sufficient deformation of the front side body structure for a vehicle is important for the transmission and dispersion of a load, but continuous deformation of the vehicle body can cause physical injury to a passenger. It is particularly important to protect a passenger from a frontal collision by reducing the degree of deformation at the vehicle body close to the passenger.
[0065] That is, the second horizontal rib 11 and the second vertical rib 12 are formed at the front end of the front side member 100, relatively far from the passenger, so that the front end of the front side member 100 can be sufficiently deformed. Accordingly, a load can be effectively transmitted to the A pillar 500 and dispersed. In this case, the front end of the front side member 100 can include a portion extending from the frontmost end of the front side member 100 to a portion where the shock absorber housing 300 is provided.
[0066] In contrast, a portion is set after the portion where the shock absorber housing 300 of the front side member 100 is mounted. This portion is a position of the front side body for a vehicle relatively close to the passenger. The need to protect a passenger from injury by deformation of the vehicle body by reducing the degree of deformation of the vehicle body increases.
[0067] Accordingly, the oblique rib 13 can be additionally provided or formed at the rear end of the front side member 100 relatively close to the passenger. This can additionally ensure rigidity and additionally reduce the degree of deformation of the vehicle body compared to the front end of the front side member 100. Thereby, injury to the passenger caused by deformation of the vehicle body can be prevented.
[0068] In addition to the front side member 100, the oblique rib 13 can be additionally formed in the A pillar 500 to prevent a passenger from being injured by deformation of the vehicle body.
[0069] Likewise, an X-shaped rib 15 having an X shape can be formed at the rear end of the fitting groove 380 of the shock absorber housing 300. The X-shaped rib 15 can also reduce the degree of deformation of the vehicle body, thereby protecting a passenger from injury by deformation of the vehicle body.
[0070] While particular embodiments of the present disclosure have been illustrated and described, it would be obvious to those skilled in the art that various modifications and changes can be made without departing from the spirit and scope of the present disclosure as defined in the claims.
Claims
1. A front side vehicle body structure for a vehicle, the vehicle body structure comprising: a front side member extending in a longitudinal direction of the vehicle; a shock absorber housing provided between a front end and a rear end of the front side member and connected to the front side member; and an A-pillar connected to the rear end of the front side member, wherein the front side member, the shock absorber housing, and the A-pillar are integrally formed, wherein a front end of a fender skirt member is connected to a front end of the front side member, and wherein a rear end of the fender skirt member is inserted into a fitting groove of the shock absorber housing.
2. The front side vehicle body structure for a vehicle according to claim 1, wherein a connection bracket is provided at the front end of the front side member, and wherein the front end of the fender skirt member is connected to the connection bracket.
3. The front side vehicle body structure for a vehicle according to claim 1, wherein the fitting groove is provided on an outside of the shock absorber housing, and with respect to a direction outwardly toward the vehicle, the fender skirt member is inserted into the fitting groove, and one or more points at which the fender skirt member and the fitting groove abut are coupled to each other.
4. The front side vehicle body structure for a vehicle according to claim 1, wherein the rear end of the fender skirt member has a larger cross-sectional area than the front end of the fender skirt member.
5. The front side vehicle body structure for a vehicle according to claim 1, wherein at the front end of the front side member, a space is provided at an intersection of a first horizontal rib and a first vertical rib.
6. The front side vehicle body structure for a vehicle according to claim 5, wherein: a connection bracket is formed at the front end of the front side member; a front end of the fender skirt member is connected to one end of the connection bracket; and the other end of the connection bracket is provided on the same plane as a foremost one of the first vertical ribs.
7. The front side vehicle body structure for a vehicle according to claim 1, wherein an X-shaped rib having an X shape is provided at a rear end of the fitting groove of the shock absorber housing.
8. The front side vehicle body structure for a vehicle according to claim 1, wherein in any one or more of the front side member, the shock absorber housing, or the A-pillar, a space is provided at an intersection of a second horizontal rib and a second vertical rib.
9. The front side vehicle body structure for a vehicle according to claim 1, wherein an upper end surface of the fender skirt member is positioned higher or lower than an upper end surface of the shock absorber housing.
10. The front side vehicle body structure for a vehicle according to claim 1, wherein the fender skirt member has a circular cross-section or a polygonal cross-section having four or more corners.