Lower A column force transmission structure and vehicle

Abstract

The utility model discloses a lower A column force transmission structure and a vehicle with the same, the lower A column force transmission structure comprises a lower A column, a doorsill beam, a first reinforcing piece and a second reinforcing piece, and the doorsill beam is fixedly connected to the lower end of the lower A column; the first reinforcing piece is fixedly connected to the doorsill beam, and the first reinforcing piece is attached to and fixed to one side of the lower A column; the second reinforcing piece comprises a front end connecting part and a rear end connecting part which are distributed in the front-back direction, the front end connecting part is suitable for being connected to the rear end of the front cabin longitudinal beam, and the rear end connecting part abuts against the other side of the lower A column corresponding to the first reinforcing piece and is fixedly connected with the lower A column. The second reinforcer, the lower A column, the first reinforcer and the doorsill beam can form a continuous force transmission path, so that collision force on the longitudinal beam of the front cabin can be guided and transmitted into the doorsill beam, collision impact on the lower A column is reduced, deformation of the lower A column under the front collision working condition is effectively reduced, and safety of passengers is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of vehicle structure technology, specifically to a lower A-pillar force transmission structure and a vehicle. Background Technology

[0002] Normally, when a vehicle experiences a frontal collision, the impact energy is transferred rearward through the crash beams and front engine compartment longitudinal beams to the entire vehicle body structure, allowing the entire vehicle body to participate in energy absorption and thus preventing excessive damage to the passenger compartment. However, in a frontal offset collision (such as a 25% frontal offset collision), the impact energy is only applied to a portion of the vehicle body. In this case, the impacted area is equivalent to bearing several times the energy of a normal collision, which can easily lead to structural damage to the vehicle body.

[0003] The lower A-pillar area, located at the left and right edges of the vehicle body, is the primary stress area in a frontal offset collision. Traditional front engine compartment longitudinal beams have a relatively simple force transmission path, failing to effectively disperse the force. The impact force is concentrated and transmitted to the lower A-pillar area via these beams, causing damage. If a frontal offset collision occurs at high speed, the enormous impact force can easily cause the lower A-pillar to deform or even break, leading to the rearward movement of the front bulkhead and lower crossbeam, intruding into the passenger compartment and endangering the lives of the driver and front passengers. Utility Model Content

[0004] In view of the above problems, this utility model provides a lower A-pillar force transmission structure and vehicle, which can transmit the collision impact force on the front engine compartment longitudinal beam to the door sill beam, thereby reducing the collision impact on the lower A-pillar.

[0005] According to one aspect of the present invention, a force transmission structure for a lower A-pillar is provided, comprising: a lower A-pillar; a sill beam fixedly connected to the lower end of the lower A-pillar; a first reinforcing member fixedly connected to the sill beam, and the first reinforcing member abutting and fixed to one side of the lower A-pillar; and a second reinforcing member comprising a front connecting portion and a rear connecting portion distributed along the front-rear direction, the front connecting portion being adapted to connect to the rear end of the forward engine compartment longitudinal beam, and the rear connecting portion corresponding to the first reinforcing member abutting the other side of the lower A-pillar and fixedly connected to the lower A-pillar.

[0006] In an exemplary embodiment of this utility model, the lower A-pillar includes a main board and a side plate connected to the front side of the main board; wherein, the normal direction of the side plate surface is parallel to the front-rear direction, and has a first connecting surface and a second connecting surface opposite to each other in the front-rear direction; the end face of the first reinforcing member facing the side plate abuts against the first connecting surface; the rear connecting portion extends in the left-right direction to form a first connecting portion, and the first connecting portion abuts against the second connecting surface corresponding to the first reinforcing member.

[0007] In an exemplary embodiment of the present invention, the normal direction of the motherboard is parallel to the left-right direction, and it has a third connecting surface and a fourth connecting surface that are opposite to each other in the left-right direction; the end face of the first reinforcing member facing the motherboard abuts against the third connecting surface; the rear connecting portion extends in the front-back direction to form a second connecting portion, and the second connecting portion abuts against the fourth connecting surface corresponding to the first reinforcing member.

[0008] In an exemplary embodiment of the present invention, a first support portion and a second support portion are provided between the front end connecting portion and the rear end connecting portion, wherein the first support portion is connected and supported between the front end connecting portion and the first connecting portion to form a first force transmission path; and the second support portion is connected and supported between the front end connecting portion and the second connecting portion to form a second force transmission path.

[0009] In an exemplary embodiment of the present invention, the second connecting portion extends downward in the vertical direction and backward in the front-back direction to form a third connecting portion, which is fixedly connected to the sill beam.

[0010] In an exemplary embodiment of the present invention, the first reinforcing member includes a base, the interior of which has a cavity extending through the base in a left-right direction; the cavity is provided with multiple reinforcing ribs arranged in a crisscrossing manner, the multiple reinforcing ribs dividing the cavity into multiple chamber structures.

[0011] In an exemplary embodiment of the present invention, the first reinforcing member further includes a cover plate, one side of which is attached to the lower A-pillar, and the other side of which is covered on at least one cavity structure and welded to the base.

[0012] In an exemplary embodiment of this utility model, the sill beam is provided with an upward-facing mounting groove, and a first reinforcing member is disposed in the mounting groove and welded to the groove wall.

[0013] In an exemplary embodiment of the present invention, the lower A-pillar force transmission structure further includes a connecting component, which passes through the first reinforcing member, the lower A-pillar, and the second reinforcing member, and connects the first reinforcing member and the second reinforcing member into one unit.

[0014] According to a second aspect of the present invention, a vehicle is provided, including the aforementioned lower A-pillar force transmission structure.

[0015] This utility model connects the front engine compartment longitudinal beam, lower A-pillar, and sill beam into a whole through the first and second reinforcing members. The first and second reinforcing members are correspondingly arranged on opposite sides of the lower A-pillar, so that a continuous force transmission path is formed between the front engine compartment longitudinal beam and the sill beam. This allows the collision force on the front engine compartment longitudinal beam to be guided and transmitted to the sill beam, reducing the impact on the lower A-pillar and effectively reducing the deformation of the lower A-pillar under frontal collision conditions. This achieves the purpose of preventing the front bulkhead and the lower front bulkhead crossbeam from excessively intruding into the passenger compartment.

[0016] The above description is merely an overview of the technical solutions of the present utility model embodiments. In order to better understand the technical means of the present utility model embodiments and to implement them in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the present utility model embodiments more obvious and understandable, specific embodiments of the present utility model are described below. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the force transmission structure of the lower A-column described in this embodiment is shown.

[0019] Figure 2 This diagram shows a left-side view of the connection of the lower A-pillar force transmission structure described in this embodiment;

[0020] Figure 3 This diagram shows a top view of the connection of the lower A-column force transmission structure described in this embodiment.

[0021] Figure 4 A schematic diagram of the inner structure of the second reinforcing member described in this embodiment is shown;

[0022] Figure 5 This diagram illustrates the connection between the second reinforcing member, the sill beam, and the first reinforcing member as described in this embodiment.

[0023] Figure 6 A schematic diagram of the structure of the first reinforcing member described in this embodiment is shown;

[0024] Figure 7 This diagram illustrates the connection between the first reinforcing member and the sill beam described in this embodiment.

[0025] Figure 8 A schematic diagram of the sill beam described in this embodiment is shown.

[0026] Explanation of icon numbers:

[0027] 1-Lower A-pillar, 11-Main board, 12-Side panel,

[0028] 2-Sill beam, 21-Mounting groove, 211-Bottom sidewall, 212-First sidewall, 213-Second sidewall

[0029] 3-First reinforcing member, 31-Base, 311-Cavity, 312-Reinforcing rib, 3121-Horizontal rib, 3122-Vertical rib, 32-Cover plate,

[0030] 4-Second reinforcing member; 41-Front-end connecting part; 42-Rear-end connecting part; 421-First connecting part; 422-Second connecting part; 423-Third connecting part; 43-First support part; 431-First force transmission path; 44-Second support part; 441-Second force transmission path.

[0031] 5-Connecting assembly, 6-Forward nacelle longitudinal beam, 7-Front bulkhead, 8-Lower front bulkhead crossbeam

[0032] x - forward / backward direction, y - left / right direction, z - up / down direction.

[0033] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0034] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make the present invention more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.

[0035] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a full understanding of embodiments of the present invention. However, those skilled in the art will recognize that the technical solutions of the present invention can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., may be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of the present invention.

[0036] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0037] Furthermore, the orientations or positional relationships indicated by "front," "rear," "left," "right," "up," and "down" mentioned in the embodiments of this utility model are based on the orientations or positional relationships shown in the accompanying drawings; the x-direction is the front-back direction, where the direction the arrow points is "front," and vice versa; the y-direction is the left-right direction, where the direction the arrow points is "left," and vice versa; the z-direction is the up-down direction, where the direction the arrow points is "up," and vice versa. The terms "inner" and "outer" mentioned in the embodiments of this application are defined based on the outline of the corresponding component. It is understood that the above-mentioned terms indicating orientations or positional relationships are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0038] like Figures 1 to 3 As shown, this embodiment provides a force transmission structure for the lower A-pillar, including a lower A-pillar 1, a sill beam 2, a first reinforcing member 3, and a second reinforcing member 4. The sill beam 2 is fixedly connected to the lower end of the lower A-pillar 1, and the first reinforcing member 3 is fixedly connected to the sill beam 2, with the first reinforcing member 3 abutting and fixed to one side of the lower A-pillar 1. The second reinforcing member 4 includes a front connecting portion 41 and a rear connecting portion 42 distributed along the front-rear direction x. The front connecting portion 41 is connected to the rear end of the front engine compartment longitudinal beam 6, and the rear connecting portion 42 corresponds to the first reinforcing member 3, abutting against the other side of the lower A-pillar 1 and fixedly connected to it. In this configuration, the front engine compartment longitudinal beam 6, the second reinforcing member 4, the lower A-pillar 1, the first reinforcing member 3, and the sill beam 2 form a continuous force transmission path. This allows the collision impact force to be transmitted and dispersed to other structures of the vehicle body via the sill beam 2 along the force transmission path between the front engine compartment longitudinal beam 6 and the sill beam 2, thereby reducing the impact of the collision energy on the lower A-pillar 1 and effectively reducing the deformation of the lower A-pillar 1 under frontal collision conditions, which is beneficial to occupant safety.

[0039] Specifically, such as Figures 1 to 3As shown, in this embodiment, the lower A-pillar 1 is specifically the inner panel of the lower A-pillar 1. Based on the outline of the vehicle body structure, the lower A-pillar 1 is connected to the front bulkhead 7 on the inner side in the left-right direction y, and the lower A-pillar 1 is fixedly connected to the sill beam 2 at its lower end on the outer side in the left-right direction y. The first reinforcing member 3 is disposed on the outer side of the lower A-pillar 1 along the left-right direction y and is fixedly connected to the sill beam 2. Normally, the front engine compartment longitudinal beam 6 is disposed in front of the lower front bulkhead crossbeam 8 along the front-rear direction x and is arranged inward relative to the lower A-pillar 1 along the left-right direction y. Therefore, the front end connecting part 41 of the second reinforcing member 4 is connected to the rear end of the front engine compartment longitudinal beam 6, and the rear end connecting part 42 extends backward along the front-rear direction x and outward along the left-right direction y to be fixedly connected to the inner side of the lower A-pillar 1, and corresponds to the first reinforcing member 3 on the outer side of the lower A-pillar 1. In this way, the first reinforcing member 3 and the second reinforcing member 4 are correspondingly arranged on opposite sides of the lower A-pillar 1. The front engine compartment longitudinal beam 6, the second reinforcing member 4, the lower A-pillar 1, the first reinforcing member 3 and the sill beam 2 form a continuous force transmission path, so that the collision force on the front engine compartment longitudinal beam 6 can be guided and transmitted to the sill beam 2, and then transmitted and dispersed to other structures at the rear of the vehicle body through the sill beam 2. This reduces the impact of the collision energy on the lower A-pillar 1, reduces the deformation of the lower A-pillar 1 under frontal collision conditions, and achieves the purpose of avoiding excessive intrusion of the front bulkhead 7 and the lower front bulkhead crossbeam 8 into the passenger compartment.

[0040] It is understandable that the above-mentioned methods of fixing the threshold beam 2 to the lower A-column 1, the first reinforcing member 3 to the lower A-column 1, and the second reinforcing member 4 to the lower A-column 1 can all be achieved by welding or bolting, etc., depending on the specific requirements. This will not be elaborated here.

[0041] In some embodiments, such as Figure 1 , Figure 4 and Figure 5 As shown, the lower A-pillar 1 includes a main board 11 and a side plate 12 connected to the front of the main board 11. The normal direction of the side plate 12 is parallel to the front-rear direction x, and it has a first connecting surface and a second connecting surface that are opposite to each other along the front-rear direction x. At this time, the end face of the first reinforcing member 3 facing the side plate 12 abuts against the first connecting surface, and the rear connecting portion 42 extends along the left-right direction y to form a first connecting portion 421. The first connecting portion 421 abuts against the second connecting surface corresponding to the first reinforcing member 3. In this way, the second reinforcing member 4 and the first reinforcing member 3 can be arranged correspondingly in the front-rear direction x, so that the first connecting portion 421, the side plate 12, and the first reinforcing member 3 form a continuous force transmission path along the front-rear direction x, which can effectively improve the force transmission effect of the first reinforcing member 3 in the front-rear direction x.

[0042] In some embodiments, such as Figure 1 , Figure 4 and Figure 5As shown, the normal direction of the motherboard 11 is parallel to the left-right direction y, and it has a third connecting surface and a fourth connecting surface that are opposite to each other in the left-right direction y. At this time, the end face of the first reinforcing member 3 facing the motherboard 11 abuts against the third connecting surface, and the rear connecting portion 42 extends in the front-rear direction x to form a second connecting portion 422. The second connecting portion 422 abuts against the fourth connecting surface corresponding to the first reinforcing member 3. In this way, the second reinforcing member 4 and the first reinforcing member 3 can be arranged correspondingly in the left-right direction y, so that the second connecting portion 422, the motherboard 11 and the first reinforcing member 3 form a continuous force transmission path in the left-right direction y, which can effectively improve the force transmission effect of the first reinforcing member 3 in the left-right direction y.

[0043] In some embodiments, such as Figure 1 , Figures 3 to 5 As shown, a first support portion 43 and a second support portion 44 are provided between the front connecting portion 41 and the rear connecting portion 42. The first support portion 43 connects and supports the front connecting portion 41 and the first connecting portion 421 to form a first force transmission path 431; the second support portion 44 connects and supports the front connecting portion 41 and the second connecting portion 422 to form a second force transmission path 441. In this way, the force can be dispersed by the first force transmission path 431 and the second force transmission path 441, so that the second reinforcing member 4 can transmit the impact energy to the first reinforcing member 3 and the sill beam 2 through different force transmission paths in frontal collision conditions (especially frontal offset collision conditions), further reducing the impact on the lower A-pillar 1.

[0044] Specifically, such as Figure 1 , Figures 3 to 5 As shown, in this embodiment, the first support part 43 is a support structure formed by multiple reinforcing ribs intersecting and connecting. Its front end is connected to the outer end face of the front end connecting part 41, and its rear end extends backward along the front-rear direction x and outward along the left-right direction y to connect to the first connecting part 421, thereby forming a first force transmission path 431 located outside the second reinforcing member 4 (based on the outline of the vehicle body structure); the second support part 44 is a stepped structure formed by multiple horizontal support plates and multiple vertical support plates alternately connected. Its front end is connected to the rear end face of the front end connecting part 41, and its rear end extends backward along the front-rear direction x and outward along the left-right direction y to connect to the second connecting part 422, thereby forming a second force transmission path 441 located inside the second reinforcing member 4 (based on the outline of the vehicle body structure). In this way, the first force transmission path 431 can transmit the force of the first reinforcing member 3 along the front-back direction x to the outside of the second reinforcing member 4, and the second force transmission path 441 can transmit the force of the first reinforcing member 3 along the left-right direction y to the inside of the second reinforcing member 4, so that the impact energy can be dispersed along different paths, thereby reducing the impact on the lower A pillar 1.

[0045] Furthermore, the aforementioned second support portion 44 can also be used to overlap and fix the end of the front lower crossbeam 8, thereby improving the connection stability of the second reinforcing member 4 and further optimizing the force transmission path of the second support portion 44.

[0046] In some embodiments, such as Figure 4 and Figure 5 As shown, the second connecting portion 422 extends downward in the vertical direction z and backward in the front-rear direction x to form a third connecting portion 423. The third connecting portion 423 is fixedly connected to the sill beam 2, and the fixed connection method includes, but is not limited to, welding or bolt connection. In this way, the second reinforcing member 4 can be connected to the sill beam 2, further improving the connection stability of the second reinforcing member 4 and optimizing the force transmission path of the second reinforcing member 4.

[0047] In some embodiments, such as Figure 6 As shown, the first reinforcing member 3 includes a base 31, and the interior of the base 31 has a cavity 311 extending through the base 31 in the left-right direction y. Multiple reinforcing ribs 312 are arranged intersectingly within the cavity 311, dividing the cavity 311 into multiple chamber structures. This arrangement ensures that the base 31 has sufficient structural strength, and on this basis, reduces the material usage and weight of the first reinforcing member 3, thus contributing to vehicle body lightweighting.

[0048] Specifically, such as Figure 6 As shown, the base 31 is formed into a frame structure with a cavity 311 arranged through the left and right directions y. The circumferential direction of the cavity 311 forms the front, rear, upper and lower four side walls of the base 31. The material thickness of the side walls can be controlled to be 2 mm or more. The multiple reinforcing ribs 312 include several intersecting horizontal ribs 3121 and vertical ribs 3122. The horizontal ribs 3121 extend along the front-rear direction x and are arranged at intervals along the vertical direction z, with their front-rear x ends connected to the front and rear side walls of the base 31, respectively. The vertical ribs 3122 extend along the vertical direction z and are arranged at intervals along the front-rear direction x, with their vertical z ends connected to the upper and lower side walls of the base 31, respectively. Both the horizontal ribs 3121 and the vertical ribs 3122 have a certain width in the left-right direction y, and the material thickness can be controlled to be 2mm or more, so that the base 31 has sufficient structural strength to bear and transmit loads from the front-rear x and left-right y directions, ensuring good force transmission effect. At the same time, the horizontal ribs 3121 and the vertical ribs 3122 can divide the cavity 311 into multiple chamber structures that are arranged through the left-right direction y, so as to reduce the material usage and weight of the first reinforcing member 3.

[0049] Furthermore, the base 31 and the vertical ribs 3122 located in the cavity 311 are both inclined forward from bottom to top. This can improve the deformation resistance of the base 31 in the front-rear x direction and ensure that the collision force is effectively transmitted in the front-rear x direction.

[0050] In some embodiments, such as Figure 6 and Figure 7 As shown, the first reinforcing member 3 also includes a cover plate 32. One side of the cover plate 32 abuts against the lower A-pillar 1, and the other side covers at least one of the aforementioned cavity structures and is welded to the base 31. In this way, the cover plate 32 can increase the contact area between the first reinforcing member 3 and the lower A-pillar 1, thereby improving the connection stability between the two. At the same time, the cover plate 32 can also serve as a contact member for fixed connection with the lower A-pillar 1. For example, a connection hole can be opened on the surface of the cover plate 32, and the cover plate 32 can be fixedly connected to the lower A-pillar 1 by bolt connection, thereby firmly and effectively fixing the first reinforcing member 3 to the outer surface of the lower A-pillar 1.

[0051] It is understandable that the first reinforcing member 3 can be a structural component made of extruded aluminum profile, and the second reinforcing member 4 can be a one-piece cast aluminum component. Both have certain structural strength and light weight, which can effectively transmit collision force and are conducive to vehicle body lightweighting.

[0052] In some embodiments, such as Figure 7 and Figure 8 As shown, the sill beam 2 has an upward-facing mounting groove 21. The first reinforcing member 3 is disposed in the mounting groove 21 and welded to the groove wall of the mounting groove 21. By setting the mounting groove 21, the groove wall of the mounting groove 21 can provide support for the first reinforcing member 3, further improving the connection stability between the first reinforcing member 3 and the sill beam 2.

[0053] Specifically, such as Figure 7 and Figure 8 As shown, in this embodiment, the mounting groove 21 is opened on the inner side of the sill beam 2. The groove opening is opened upward in the vertical direction z, inward in the horizontal direction y, and forward in the front-back direction x. The groove wall of the mounting groove 21 includes a bottom side wall 211 with its normal parallel to the vertical direction z, a first side wall 212 with its normal parallel to the horizontal direction y, and a second side wall 213 with its normal parallel to the front-back direction x. When the first reinforcing member 3 is installed in the mounting groove 21, the bottom surface of the first reinforcing member 3 abuts against the bottom side wall 211 and is welded to the bottom side wall 211. The outer side surface of the first reinforcing member 3 (the side away from the main board 11 of the lower A-pillar 1 in the horizontal direction y) abuts against the first side wall 212 and is welded to the first side wall 212. The rear side surface of the first reinforcing member 3 (the side away from the side plate 12 of the lower A-pillar 1 in the front-back direction x) abuts against the second side wall 213, thereby achieving a stable connection of the first reinforcing member 3 in the mounting groove 21 and ensuring the connection stability between the first reinforcing member 3 and the sill beam 2.

[0054] In some embodiments, such as Figure 2As shown, the force transmission structure of the lower A-pillar also includes a connecting component 5. The connecting component 5 passes through the first reinforcing member 3, the lower A-pillar 1, and the second reinforcing member 4, and connects the first reinforcing member 3 and the second reinforcing member 4 into one unit. In this way, the first reinforcing member 3 and the second reinforcing member 4 can be connected to each other through the connecting component 5. Compared with the welded connection, the internal stress is smaller and it is not easy for the connection to break or separate.

[0055] Specifically, such as Figure 1 , Figure 2 and Figure 5 As shown, the connecting assembly 5 can use connecting bolts. Connecting holes are correspondingly provided on the first connecting part 421 of the second reinforcing member 4, the side plate 12 of the lower A-pillar 1, and the end face of the first reinforcing member 3 facing the side plate 12. Connecting bolts pass through these connecting holes to connect the second reinforcing member 4, the lower A-pillar 1, and the first reinforcing member 3 together, thus achieving a stable connection in the front-rear direction (x). Connecting holes are also correspondingly provided on the second connecting part 422 of the second reinforcing member 4, the main plate 11 of the lower A-pillar 1, and the cover plate 32 of the first reinforcing member 3. Connecting bolts pass through these connecting holes to connect the second reinforcing member 4, the lower A-pillar 1, and the first reinforcing member 3 together, thus achieving a stable connection in the left-right direction (y). Through this connection method, the first reinforcing member 3, the lower A-pillar 1, and the second reinforcing member 4 can be detachably fixed together, ensuring a stable connection and facilitating future maintenance and replacement.

[0056] Furthermore, in another embodiment, a vehicle is proposed, including the lower A-pillar force transmission structure described in the above embodiments. For other structures and working principles of the lower A-pillar force transmission structure, please refer to the above description of the embodiments for the lower A-pillar force transmission structure; for other vehicle structures, please refer to the prior art; since the lower A-pillar force transmission structure has the aforementioned technical effects, a vehicle with this lower A-pillar force transmission structure should also have corresponding technical effects, which will not be elaborated further here.

[0057] It is understood that the above embodiments and accompanying drawings mainly illustrate the case where the lower A-pillar force transmission structure is located on the left side of the vehicle. In other embodiments, such as... Figure 3 As shown, the lower A-pillar force transmission structure can be installed on either the left or right side of the vehicle. The lower A-pillar force transmission structure on the right side of the vehicle and the lower A-pillar force transmission structure on the left side of the vehicle can be symmetrically arranged in the left-right y direction. Further details are omitted here.

[0058] It is understood that, in this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0059] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. "A plurality of" means two or more, unless otherwise explicitly specified. The terms "some embodiments," "exemplarily," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model.

[0060] The illustrative expressions of the terms used above do not necessarily refer to the same embodiments or examples. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, those skilled in the art can combine and integrate the different embodiments or examples described herein, as well as the features of those different embodiments or examples, without contradiction.

[0061] Although embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, substitutions and variations to the above embodiments within the scope of the present invention. Therefore, any changes or modifications made in accordance with the claims and description of the present invention should fall within the scope of the patent coverage of the present invention.

Claims

1. A force transmission structure for a lower A-pillar, characterized in that, include: Lower A-pillar; The door sill beam is fixedly connected to the lower end of the lower A-pillar; The first reinforcing member is fixedly connected to the sill beam, and the first reinforcing member is abutted against and fixed to one side of the lower A-pillar; and The second reinforcing member includes a front end connecting part and a rear end connecting part distributed along the front-rear direction. The front end connecting part is adapted to be connected to the rear end of the forward engine compartment longitudinal beam, and the rear end connecting part is attached to the other side of the lower A-pillar corresponding to the first reinforcing member and is fixedly connected to the lower A-pillar.

2. The force transmission structure of the lower A-pillar according to claim 1, characterized in that, The lower A-pillar includes a mainboard and a side panel connected to the front of the mainboard; wherein, the normal direction of the side panel is parallel to the front-rear direction, and has a first connecting surface and a second connecting surface opposite to each other along the front-rear direction; the end face of the first reinforcing member facing the side panel abuts against the first connecting surface; the rear connecting portion extends in the left-right direction to form a first connecting portion, and the first connecting portion abuts against the second connecting surface corresponding to the first reinforcing member.

3. The force transmission structure of the lower A-pillar according to claim 2, characterized in that, The motherboard has a normal direction parallel to the left-right direction and has a third connecting surface and a fourth connecting surface opposite to each other along the left-right direction; the end face of the first reinforcing member facing the motherboard abuts against the third connecting surface; the rear connecting portion extends along the front-rear direction to form a second connecting portion, and the second connecting portion abuts against the fourth connecting surface corresponding to the first reinforcing member.

4. The force transmission structure of the lower A-pillar according to claim 3, characterized in that, A first support portion and a second support portion are provided between the front end connection portion and the rear end connection portion. The first support portion is connected to and supported between the front end connection portion and the first connection portion to form a first force transmission path. The second support portion is connected to and supported between the front end connection portion and the second connection portion to form a second force transmission path.

5. The force transmission structure of the lower A-pillar according to claim 4, characterized in that, The second connecting part extends downward in the vertical direction and backward in the front-back direction to form a third connecting part, which is fixedly connected to the threshold beam.

6. The force transmission structure of the lower A-pillar according to any one of claims 1-5, characterized in that, The first reinforcing member includes a base, the interior of which has a cavity extending through the base in a left-right direction; the cavity is provided with multiple reinforcing ribs arranged in a crisscrossing manner, the multiple reinforcing ribs dividing the cavity into multiple chamber structures.

7. The force transmission structure of the lower A-pillar according to claim 6, characterized in that, The first reinforcing member also includes a cover plate, one side of which is attached to the lower A-pillar, and the other side of which is covered on at least one of the cavity structures and welded to the base.

8. The force transmission structure of the lower A-pillar according to claim 1, characterized in that, The threshold beam has an upward-facing mounting groove, and the first reinforcing member is disposed in the mounting groove and welded to the groove wall.

9. The force transmission structure of the lower A-pillar according to claim 1, characterized in that, The lower A-pillar force transmission structure also includes a connecting component, which passes through the first reinforcing member, the lower A-pillar, and the second reinforcing member, and connects the first reinforcing member and the second reinforcing member into one unit.

10. A vehicle, characterized in that, Including the lower A-column force transmission structure as described in any one of claims 1-9.

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