A reinforced connection structure at the A-pillar between the upper and lower body of a vehicle and an automobile

Abstract

This utility model proposes a reinforced connection structure at the A-pillar between the upper and lower vehicle bodies, and an automobile, including an upper vehicle body, a lower vehicle body, a front bulkhead, a lower windshield crossbeam, and a support member. The upper vehicle body is fixed to the outside of the lower vehicle body, and a cavity is formed between the two. The front bulkhead and the lower windshield crossbeam are both located on one side of the lower vehicle body, with the lower windshield crossbeam located directly above the front bulkhead. The support member is located within the cavity and has three connecting ends. The first connecting end of the support member is fixedly connected to the upper vehicle body, the second connecting end of the support member is fixedly connected to the lower vehicle body, and the third connecting end of the support member is fixedly connected to the front bulkhead and the lower windshield crossbeam, respectively, to enhance the connection strength between the front bulkhead and the lower windshield crossbeam and the lower vehicle body. This structure increases the connection strength between the front bulkhead, the lower windshield crossbeam, and the A-pillar joint, while also improving the strength of the A-pillar, thereby enhancing the safety of occupants in a small offset collision.

Description

Technical Field

[0001] This utility model relates to the field of automotive technology, and in particular to a reinforced connection structure at the A-pillar of the upper and lower body of a vehicle, and an automobile. Background Technology

[0002] With the continuous development of automotive technology, users have increasingly higher requirements for vehicle safety performance. Vehicle safety performance is determined by many aspects, among which the body structure's ability to resist impact and deformation in the event of an accidental collision is a very important one.

[0003] A vehicle body connection structure with publication number CN209080024U includes a side panel assembly and a sill assembly. The side panel assembly includes an outer side panel, an A-pillar reinforcing plate, and an inner A-pillar panel. The outer side panel, the A-pillar reinforcing plate, and the upper part of the inner A-pillar panel are connected and fixed. The sill assembly includes a sill main beam and a connecting component fixedly connected to the sill main beam. The sill main beam is located at the lower part of the outer side panel and is arranged along the length of the outer side panel. The connecting component is welded to the side panel assembly.

[0004] Currently, when a vehicle is involved in a small offset collision, i.e., a 25% frontal rigid barrier collision, the impact force is concentrated on one side of the vehicle. The impact area is small, and the front bumper beam and front longitudinal beam do not fully absorb the force. Instead, the impact is borne by the frame, suspension, and A-pillar at the fender. This can cause severe deformation or breakage of the A-pillar, making it impossible to guarantee the survival space inside the vehicle and thus reducing the safety of the occupants. Utility Model Content

[0005] In view of this, this utility model proposes a reinforced connection structure at the A-pillar between the upper and lower vehicle bodies and a vehicle, which increases the connection strength between the front bulkhead, the lower crossbeam of the windshield and the A-pillar joint, and at the same time improves the strength of the A-pillar, effectively improving the safety of occupants in small offset collisions.

[0006] The technical solution of this utility model is implemented as follows: This utility model provides a reinforced connection structure at the A-pillar between the upper and lower vehicle bodies, including an upper vehicle body, a lower vehicle body, a front bulkhead, a lower crossbeam of the front windshield, and supporting components, wherein... The upper body is fixed to the outside of the lower body, and a cavity is formed between the two; Both the front bulkhead and the lower crossbeam of the front windshield are located on one side of the lower body, and the lower crossbeam of the front windshield is located directly below the front bulkhead; The support component is installed inside the cavity and has three connecting ends. The first connecting end of the support component is fixedly connected to the upper vehicle body, the second connecting end of the support component is fixedly connected to the lower vehicle body, and the third connecting end of the support component is fixedly connected to the front bulkhead and the lower crossbeam of the front windshield, respectively, to enhance the connection strength between the front bulkhead and the lower crossbeam of the front windshield and the lower vehicle body.

[0007] Based on the above technical solutions, preferably, the support member includes a first piece, a second piece, a third piece, a fourth piece, and a fifth piece, wherein, The first piece serves as the second connecting end of a support component, which is fixedly connected to the lower body, and the two are arranged in parallel. The second piece is fixedly connected to the first piece, and the side of the second piece away from the first piece is tilted towards the upper body side; The third piece is fixed to the side of the second piece away from the first piece, and the third piece is arranged parallel to the first piece. The third piece serves as the first connecting end of the support member and is fixedly connected to the upper body. The fourth piece is fixed on the side of the third piece away from the second piece, and the side of the fourth piece away from the third piece is tilted towards the lower body side; The fifth piece is fixed on the side of the fourth piece away from the third piece and is set parallel to the lower body. The third connecting end of the fifth piece, as a support member, is fixedly connected to the front bulkhead and the lower crossbeam of the front windshield.

[0008] Based on the above technical solutions, preferably, the second piece and the fourth piece are arranged symmetrically with respect to the vertical plane of the center point of the third piece.

[0009] Based on the above technical solutions, preferably, a first filter chamfer is provided between the first sheet and the second sheet, a second filter chamfer is provided between the second sheet and the third sheet, a third filter chamfer is provided between the third sheet and the fourth sheet, and a fourth filter chamfer is provided between the fourth sheet and the fifth sheet.

[0010] Based on the above technical solutions, preferably, the chamfer angles of the first filter chamfer, the second filter chamfer, the third filter chamfer, and the fourth filter chamfer are all equal, and the chamfer angle is 115~125°.

[0011] Based on the above technical solutions, preferably, the widths of the first piece, the second piece, the third piece, and the fourth piece are equal and are half the width of the undercarriage.

[0012] Based on the above technical solution, preferably, it also includes two reinforcing members, which are symmetrically arranged on the inner side of the support member and fixedly connected to the middle of the second piece and the fourth piece respectively, and are arranged at an angle. The side of the reinforcing member away from the supporting member is fixedly connected to the lower vehicle body. The left reinforcing member and the second piece and the lower vehicle body, as well as the right reinforcing member and the fourth piece and the lower vehicle body, all form an isosceles triangle.

[0013] Based on the above technical solutions, preferably, the first piece, the second piece, the third piece, the fourth piece, and the fifth piece are integrally formed.

[0014] Based on the above technical solutions, preferably, the support component is made of low-alloy high-strength steel.

[0015] Secondly, this utility model also provides a car, including a reinforced connection structure at the A-pillar of the upper body and the lower body.

[0016] The reinforced connection structure at the A-pillar between the upper and lower vehicle bodies of this utility model, and the automobile thereof, have the following advantages over the prior art: (1) By placing the support components inside the cavity and fixing them to the upper body, lower body, front bulkhead and lower crossbeam of the front windshield respectively, the connection strength of the joint between the upper body and the lower body is increased, and the connection strength between the front bulkhead and the lower crossbeam of the front windshield and the lower body is enhanced. This makes the reinforced connection structure at the A-pillar of the entire upper body and lower body more stable, supports the A-pillar cavity, thereby improving the strength of the A-pillar, reducing the risk of failure, and ensuring the survival space and passenger safety inside the vehicle. (2) By setting the filter chamfer between each piece, the transition at the connection is smooth, avoiding stress concentration and reducing the risk of structural damage caused by stress concentration. (3) By ensuring that the widths of the first, second, third, and fourth pieces are equal and half the width of the lower body, the connection area between the support and the lower body is effectively guaranteed, providing a uniform and sufficient contact surface, making the connection more stable. (4) The reinforcement provided by the reinforcement provides additional support for the support, which can effectively resist deformation, further enhance the strength of the connection structure, and improve the safety performance of the vehicle. 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 these drawings without creative effort.

[0018] Figure 1 This is a perspective view of the reinforced connection structure at the A-pillar between the upper and lower vehicle bodies of this utility model. Figure 2 This is a perspective view of the reinforced connection structure at the A-pillar between the upper and lower vehicle bodies of this utility model. Figure 3 This is a perspective view of the connection between the lower vehicle body and the supporting component in the reinforced connection structure at the A-pillar of the upper and lower vehicle bodies of this utility model. Figure 4This is a side view of the support component of the reinforced connection structure at the A-pillar of the upper and lower vehicle bodies of this utility model. Detailed Implementation

[0019] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0020] like Figure 1-4 As shown, this utility model discloses a reinforced connection structure at the A-pillar between the upper and lower vehicle bodies, comprising an upper vehicle body 1, a lower vehicle body 2, a front bulkhead 3, a lower windshield crossbeam 4, and a support member 5. The upper vehicle body 1 is fixed to the outside of the lower vehicle body 2, forming a cavity 100 between them. The front bulkhead 3 and the lower windshield crossbeam 4 are both located on one side of the lower vehicle body 2, with the lower windshield crossbeam 4 located directly below the front bulkhead 3, and its vertical surface abutting against the inner surface of the lower vehicle body 2. The support member 5 is disposed within the cavity 100 and has three connecting ends. The first connecting end of the support member 5 is fixedly connected to the upper vehicle body 1, the second connecting end of the support member 5 is fixedly connected to the lower vehicle body 2, and the third connecting end of the support member 5 is fixedly connected to the front bulkhead 3 and the lower windshield crossbeam 4, respectively, to enhance the connection strength between the front bulkhead 3 and the lower windshield crossbeam 4 and the lower vehicle body 2.

[0021] It should be noted that the reinforced connection structure at the A-pillar between the upper and lower body is designed to enhance structural connection strength and improve vehicle safety performance under conditions such as small offset collisions. In small offset collisions, the impact force is concentrated on one side of the vehicle, resulting in a small force-bearing area. In traditional structures, the front anti-collision beam and front longitudinal beam cannot fully absorb the force, and the load is instead borne by the frame, suspension, and A-pillar at the fender. In this solution, support members 5 are installed within the cavity 100 and are connected to the upper body 1, lower body 2, front bulkhead 3, and lower crossbar of the windshield, respectively. The fixed connection of beam 4 increases the connection strength between the upper body 1 and the lower body 2 joint, and also enhances the connection strength between the front bulkhead 3 and the lower crossbeam 4 of the windshield and the lower body 2. This makes the reinforced connection structure at the A-pillar of the entire upper and lower body more stable. Furthermore, through the connection of the support member 5, the support of the A-pillar cavity is achieved, which improves the overall strength of the A-pillar and reduces the incidence of failure modes such as A-pillar joint failure and A-pillar fracture. In small offset collisions, it can better ensure the survival space inside the vehicle and protect the safety of the occupants.

[0022] In this embodiment, the support member 5 includes a first piece 51, a second piece 52, a third piece 53, a fourth piece 54, and a fifth piece 55. The first piece 51 serves as the second connecting end of the support member 5 and is fixedly connected to the lower vehicle body 2, with both pieces arranged parallel to each other. The second piece 52 is fixedly connected to the first piece 51, and the side of the second piece 52 away from the first piece 51 is inclined towards the upper vehicle body 1. The third piece 53 is fixed to the side of the second piece 52 away from the first piece 51, and the third piece 53 is inclined towards the first piece 51. The third piece 53 is arranged in parallel with the upper vehicle body 1. The fourth piece 54 is fixed on the side of the third piece 53 away from the second piece 52, and the side of the fourth piece 54 away from the third piece 53 is inclined towards the lower vehicle body 2. The fifth piece 55 is fixed on the side of the fourth piece 54 away from the third piece 53, and is arranged in parallel with the lower vehicle body 2. The fifth piece 55 is the third connecting end of the support member 5 and is fixedly connected to the front bulkhead 3 and the lower crossbeam of the front windshield 4 respectively.

[0023] It should be noted that the support member 5 is fixedly connected to the upper body 1, lower body 2, front bulkhead 3, and lower windshield crossbeam 4 through multiple pieces, forming a stable connection structure. The first piece 51 is fixed parallel to the lower body 2, the third piece 53 is fixed parallel to the upper body 1, and the fifth piece 55 is parallel to the lower body 2 and fixed to the front bulkhead 3 and lower windshield crossbeam 4. This greatly increases the connection strength of the joint between the upper body 1 and the lower body 2, as well as the connection strength between the front bulkhead 3 and lower windshield crossbeam 4 and the lower body 2. This makes the reinforced connection structure at the A-pillar of the entire upper and lower body more stable under collision and other conditions, and less prone to separation or deformation. During a collision, the effective transmission of force disperses the stress borne by the A-pillar, improving the overall strength of the A-pillar and providing more reliable safety protection for the occupants.

[0024] In this embodiment, the second piece 52 and the fourth piece 54 are arranged symmetrically with respect to the vertical plane of the center point of the third piece 53.

[0025] It should be noted that this symmetrical inclined structure can better adapt to the spatial shape between the upper body 1 and the lower body 2, making the force on both sides more balanced during the force transmission process, and playing a good role in the transition and transmission of force.

[0026] In this embodiment, a first filter chamfer 501 is provided between the first sheet 51 and the second sheet 52, a second filter chamfer 502 is provided between the second sheet 52 and the third sheet 53, a third filter chamfer 503 is provided between the third sheet 53 and the fourth sheet 54, and a fourth filter chamfer 504 is provided between the fourth sheet 54 and the fifth sheet 55.

[0027] It should be noted that the chamfered edges between the various body panels ensure a smooth transition at the joints, preventing stress concentration and reducing the risk of structural damage caused by stress concentration. This significantly enhances the connection strength between the upper body 1 and the lower body 2, as well as the connection strength between the front bulkhead 3 and the lower windshield crossbeam 4 and the lower body 2. As a result, the reinforced connection structure at the A-pillar of the entire upper and lower body is more stable under collision conditions and is less prone to separation or deformation.

[0028] In this embodiment, the chamfer angles of the first filter chamfer 501, the second filter chamfer 502, the third filter chamfer 503, and the fourth filter chamfer 504 are all equal, with a chamfer angle of 115~125°.

[0029] Specifically, in this embodiment, the chamfer angle is 120°. The 120° filter chamfer design between each piece makes the transition at the connection smooth, avoiding stress concentration. When the vehicle is subjected to external force impact such as a collision, the stress will not be excessively concentrated at the connection, thus preventing structural damage.

[0030] In this embodiment, the widths of the first piece 51, the second piece 52, the third piece 53, and the fourth piece 54 are equal and are half the width of the lower vehicle body 2.

[0031] It should be noted that this design effectively ensures the connection area between the support member 5 and the lower body 2. During connection, it provides a uniform and sufficient contact surface, making the connection more stable. At the same time, during vehicle operation, facing various complex road conditions and vibrations, the equal width design allows each piece to evenly bear the force from different directions, reducing connection loosening or structural deformation caused by uneven force distribution. This greatly enhances the connection strength of the joint between the upper body 1 and the lower body 2, as well as the connection stability between the front bulkhead 3 and the lower crossbeam 4 of the front windshield and the lower body 2, thereby improving the reliability of the overall vehicle structure.

[0032] This embodiment also includes two reinforcing members 6, which are symmetrically arranged inside the support member 5 and fixedly connected to the middle of the second piece 52 and the fourth piece 54 respectively, and are inclined. The side of the reinforcing member 6 away from the support member 5 is fixedly connected to the lower vehicle body 2. The left reinforcing member 6 and the second piece 52 and the lower vehicle body 2, as well as the right reinforcing member 6 and the fourth piece 54 and the lower vehicle body 2, all form isosceles triangles.

[0033] It should be noted that an isosceles triangle is a stable geometric shape. When a vehicle is subjected to external forces such as collisions, this structure can effectively resist deformation. The reinforcing member 6 itself provides additional support for the structure. Together with the supporting member 5, it greatly enhances the connection strength between the upper body 1 and the lower body 2, as well as the connection strength between the front bulkhead 3 and the lower crossbeam 4 of the front windshield and the lower body 2. This makes the reinforced connection structure at the A-pillar of the entire upper and lower body more stable under extreme working conditions, less prone to breakage or severe deformation, and improves the safety performance of the vehicle.

[0034] In this embodiment, the first piece 51, the second piece 52, the third piece 53, the fourth piece 54, and the fifth piece 55 are integrally formed structures; the reinforcing member 6 is integrated with the supporting member 5 by welding or screwing.

[0035] In this embodiment, the support member 5 is made of low-alloy high-strength steel.

[0036] Secondly, this utility model also provides a car, including a reinforced connection structure at the A-pillar of the upper body and the lower body.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A reinforced connection structure at the A-pillar between the upper body and the lower body, characterized in that, It includes the upper body (1), the lower body (2), the front bulkhead (3), the lower crossbeam of the front windshield (4), and the supporting components (5), among which, The upper body (1) is fixed to the outside of the lower body (2), and a cavity (100) is formed between the two. The front bulkhead (3) and the lower crossbeam (4) of the front windshield are both located on one side of the lower body (2), and the lower crossbeam (4) of the front windshield is located directly below the front bulkhead (3); The support member (5) is set inside the cavity (100) and has three connecting ends. The first connecting end of the support member (5) is fixedly connected to the upper body (1), the second connecting end of the support member (5) is fixedly connected to the lower body (2), and the third connecting end of the support member (5) is fixedly connected to the front bulkhead (3) and the lower crossbeam of the front windshield (4) respectively, in order to enhance the connection strength between the front bulkhead (3) and the lower crossbeam of the front windshield (4) and the lower body (2).

2. The reinforced connection structure at the A-pillar between the upper and lower vehicle bodies as described in claim 1, characterized in that: The support member (5) includes a first piece (51), a second piece (52), a third piece (53), a fourth piece (54), and a fifth piece (55), wherein, The first piece (51) is fixedly connected to the second connecting end of the support member (5) and the lower body (2), and the two are arranged in parallel. The second piece (52) is fixedly connected to the first piece (51), and the side of the second piece (52) away from the first piece (51) is tilted toward the upper body (1); The third piece (53) is fixed to the side of the second piece (52) away from the first piece (51), and the third piece (53) is arranged parallel to the first piece (51). The third piece (53) serves as the first connecting end of the support member (5), and the third piece (53) is fixedly connected to the upper body (1). The fourth piece (54) is fixed on the side of the third piece (53) away from the second piece (52), and the side of the fourth piece (54) away from the third piece (53) is tilted toward the lower body (2); The fifth piece (55) is fixed on the side of the fourth piece (54) away from the third piece (53) and is set parallel to the lower body (2). The fifth piece (55) is fixedly connected to the front bulkhead (3) and the lower crossbeam (4) of the front windshield as the third connecting end of the support member (5).

3. The reinforced connection structure at the A-pillar between the upper and lower vehicle bodies as described in claim 2, characterized in that: The second piece (52) and the fourth piece (54) are arranged symmetrically with respect to the vertical plane of the center point of the third piece (53).

4. The reinforced connection structure at the A-pillar between the upper and lower vehicle bodies as described in claim 2, characterized in that: A first filter chamfer (501) is provided between the first sheet (51) and the second sheet (52), a second filter chamfer (502) is provided between the second sheet (52) and the third sheet (53), a third filter chamfer (503) is provided between the third sheet (53) and the fourth sheet (54), and a fourth filter chamfer (504) is provided between the fourth sheet (54) and the fifth sheet (55).

5. The reinforced connection structure at the A-pillar between the upper and lower vehicle bodies as described in claim 4, characterized in that: The chamfer angles of the first filter chamfer (501), the second filter chamfer (502), the third filter chamfer (503), and the fourth filter chamfer (504) are all equal, and the chamfer angles are 115~125°.

6. The reinforced connection structure at the A-pillar between the upper and lower vehicle bodies as described in claim 2, characterized in that: The widths of the first piece (51), the second piece (52), the third piece (53), and the fourth piece (54) are equal and are half the width of the lower body (2).

7. The reinforced connection structure at the A-pillar between the upper and lower vehicle bodies as described in claim 2, characterized in that: It also includes two reinforcing members (6), which are symmetrically arranged on the inner side of the support member (5) and fixedly connected to the middle of the second piece (52) and the fourth piece (54) respectively, and are arranged at an angle; The side of the reinforcing member (6) away from the supporting member (5) is fixedly connected to the lower body (2). The left reinforcing member (6) and the second piece (52) and the lower body (2) are enclosed to form an isosceles triangle, as are the right reinforcing member (6) and the fourth piece (54) and the lower body (2).

8. The reinforced connection structure at the A-pillar between the upper and lower vehicle bodies as described in claim 7, characterized in that: The first piece (51), the second piece (52), the third piece (53), the fourth piece (54), and the fifth piece (55) are integrally formed structures.

9. The reinforced connection structure at the A-pillar between the upper and lower vehicle bodies as described in claim 1, characterized in that: The support component (5) is made of low-alloy high-strength steel.

10. A car, characterized in that, Includes the reinforced connection structure at the A-pillar between the upper body and the lower body as described in any one of claims 1-9.

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