Top cover beam and A column connecting structure of B-column-free vehicle body and vehicle
Through the dual-cavity structure design and the connection between the top cover beams of the A-pillar with the combination of spot welding and laser welding, the problem of insufficient rigidity of the B-pillar body is solved, the body stability and connection strength are improved, and the assembly process is simplified.
Patent Information
- Application Number
- CN202422540458.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-21
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-10-21
AI Technical Summary
The lack of B-pillar body without B-pillar results in insufficient body stability and stiffness, affecting the convenience of occupants to get on and off the vehicle and the space inside the vehicle.
The top cover cross beam and A-pillar connecting structure designed with a double-cavity structure include the front upper plate of the top cover front beam, the rear upper plate of the top cover front beam, the lower plate of the top cover front beam, the upper inner plate of the A-pillar and the reinforcement plate of the A-pillar are connected through a combination of spot welding and laser welding to form the first and second top cover cross beam cavity and the upper joint cavity of the A-pillar to enhance the body stiffness.
The rigidity mode of the B-pillar body is improved, the stability of the body is enhanced, while simplifying the assembly process and improving the firmness and tightness of the connection.
Smart Images
Figure CN223116457U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automobile manufacturing, in particular to a connection structure between a roof cross member and an A-pillar of a pillarless body and a vehicle. Background Art
[0002] A pillarless passenger vehicle can improve the convenience of getting on and off for passengers and bring a relatively large interior space, but the lack of a B-pillar has a greater impact on the body stability and body stiffness. Summary of the Invention
[0003] The technical problem to be solved by the utility model is to provide a connection structure between a roof cross member and an A-pillar of a pillarless body and a vehicle that can improve the body stiffness mode.
[0004] To solve the above technical problem, the utility model adopts the following technical solutions:
[0005] A connection structure between a roof cross member and an A-pillar of a pillarless body, which includes a front upper plate of the front roof cross member, a rear upper plate of the front roof cross member, a lower plate of the front roof cross member, an upper inner plate of the A-pillar, and an A-pillar reinforcement plate; the front upper plate of the front roof cross member and the lower plate of the front roof cross member are fixedly connected to form a first roof cross member cavity; the rear upper plate of the front roof cross member is respectively fixedly connected to the front upper plate of the front roof cross member and the lower plate of the front roof cross member to form a second roof cross member cavity; the upper inner plate of the A-pillar and the A-pillar reinforcement plate are fixedly connected to form an upper joint cavity of the A-pillar; the upper joint cavity of the A-pillar is respectively connected to the first roof cross member cavity and the second roof cross member cavity, wherein the upper inner plate of the A-pillar is fixedly connected to the lower plate of the front roof cross member, and the A-pillar reinforcement plate is respectively fixedly connected to the front upper plate of the front roof cross member and the rear upper plate of the front roof cross member.
[0006] Preferably, one side edge of the front upper plate of the front roof cross member is fixedly connected to one side edge of the lower plate of the front roof cross member, the other side of the front upper plate of the front roof cross member is bent towards the side of the lower plate of the front roof cross member to form a bent portion, and the side edge of the bent portion is fixedly connected to the middle of the lower plate of the front roof cross member; the connection portion between the bent portion and the front upper plate of the front roof cross member is fixedly connected to one side edge of the rear upper plate of the front roof cross member, and the other side edge of the rear upper plate of the front roof cross member is fixedly connected to the other side edge of the lower plate of the front roof cross member.
[0007] Preferably, first flanges and second flanges are correspondingly provided at both side edges of the lower plate of the front roof cross member, the first flange is attached to and fixedly connected to the inner side of one side edge of the front upper plate of the front roof cross member, and the second flange is attached to and fixedly connected to the inner side of the other side edge of the rear upper plate of the front roof cross member.
[0008] Preferably, a third flanging is provided on the side edge of the bending portion, and the third flanging is attached to and fixedly connected to the inner side of the middle part of the lower plate of the front crossmember of the roof panel.
[0009] Preferably, one side edge of the inner upper panel of the A-pillar is fixedly connected to one side edge of the A-pillar reinforcement plate to form the cavity of the upper joint of the A-pillar. The inner side of the other side edge of the inner upper panel of the A-pillar is attached to and fixedly connected to the outer side of the end edge of the lower plate of the front crossmember of the roof panel. The outer sides of the other side edges of the A-pillar reinforcement plate are respectively attached to and fixedly connected to the inner sides of the end edges of the front upper plate of the front crossmember of the roof panel and the end edges of the rear upper plate of the front crossmember of the roof panel.
[0010] Preferably, a fourth flanging is provided on one side edge of the inner upper panel of the A-pillar, and a fifth flanging is provided on one side edge of the A-pillar reinforcement plate. The fourth flanging and the fifth flanging are attached to and fixedly connected to each other.
[0011] Preferably, the front upper plate of the front crossmember of the roof panel and the lower plate of the front crossmember of the roof panel are fixedly connected by spot welding. The rear upper plate of the front crossmember of the roof panel is fixedly connected to the front upper plate of the front crossmember of the roof panel and the lower plate of the front crossmember of the roof panel by spot welding. The inner upper panel of the A-pillar and the A-pillar reinforcement plate are fixedly connected by spot welding. The inner upper panel of the A-pillar and the lower plate of the front crossmember of the roof panel are fixedly connected by spot welding. The A-pillar reinforcement plate is fixedly connected to the front upper plate of the front crossmember of the roof panel and the rear upper plate of the front crossmember of the roof panel by laser welding.
[0012] A vehicle includes the connection structure between the roof crossmember and the A-pillar of the body without B-pillar described above.
[0013] The beneficial technical effect of the present utility model is that: the above connection structure between the roof crossmember and the A-pillar of the body without B-pillar adopts a double-cavity structure design. Among them, the front upper plate of the front crossmember of the roof panel and the lower plate of the front crossmember of the roof panel are fixedly connected to form the first roof crossmember cavity, and the rear upper plate of the front crossmember of the roof panel is respectively fixedly connected to the front upper plate of the front crossmember of the roof panel and the lower plate of the front crossmember of the roof panel to form the second roof crossmember cavity. The two roof crossmember cavities inside the connection structure between the roof crossmember and the A-pillar of the body without B-pillar can improve the body stiffness mode. Description of the Drawings
[0014] Figure 1 is a schematic structural view of the connection structure between the roof crossmember and the A-pillar of the body without B-pillar of the present utility model in one direction;
[0015] Figure 2 is a schematic structural view of the connection structure between the roof crossmember and the A-pillar of the body without B-pillar of the present utility model in another direction;
[0016] Figure 3 is Figure 1 a cross-sectional view at A-A in
[0017] Figure 4 For Figure 1 the sectional view at section B-B in the middle. Specific embodiments
[0018] In order to enable those of ordinary skill in the art to more clearly understand the purpose, technical solution and advantages of the present utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments.
[0019] The present utility model provides a connection structure between a roof cross member and an A-pillar of a pillarless body.
[0020] As Figures 1-4 shown, in an embodiment of the present utility model, the connection structure between the roof cross member and the A-pillar of the pillarless body includes a front upper plate 1 of the front roof cross member, a rear upper plate 7 of the front roof cross member, a lower plate 2 of the front roof cross member, an upper inner plate 3 of the A-pillar, and an A-pillar reinforcement plate 4; the front upper plate 1 of the front roof cross member is fixedly connected to the lower plate 2 of the front roof cross member to form a first roof cross member cavity I; the rear upper plate 7 of the front roof cross member is fixedly connected to the front upper plate 1 of the front roof cross member and the lower plate 2 of the front roof cross member respectively to form a second roof cross member cavity II; the upper inner plate 3 of the A-pillar is fixedly connected to the A-pillar reinforcement plate 4 to form an A-pillar upper joint cavity III; the A-pillar upper joint cavity III is respectively connected to the first roof cross member cavity I and the second roof cross member cavity II, wherein the upper inner plate 3 of the A-pillar is fixedly connected to the lower plate 2 of the front roof cross member, and the A-pillar reinforcement plate 4 is fixedly connected to the front upper plate 1 of the front roof cross member and the rear upper plate 7 of the front roof cross member respectively.
[0021] One side edge of the front upper plate 1 of the front roof cross member is fixedly connected to one side edge of the lower plate 2 of the front roof cross member, and the other side of the front upper plate 1 of the front roof cross member is bent towards the side of the lower plate 2 of the front roof cross member to form a bent portion 101, and the side edge of the bent portion 101 is fixedly connected to the middle of the lower plate 2 of the front roof cross member; the connection portion 102 between the bent portion 101 and the front upper plate 1 of the front roof cross member is fixedly connected to one side edge of the rear upper plate 7 of the front roof cross member, and the other side edge of the rear upper plate 7 of the front roof cross member is fixedly connected to the other side edge of the lower plate 2 of the front roof cross member.
[0022] In the embodiment shown in the drawings, the front upper plate 1 of the front cross member of the roof panel is fixedly connected to the lower plate 2 of the front cross member of the roof panel by spot welding, and spot welding points 8 are formed at the connection; the rear upper plate 7 of the front cross member of the roof panel is fixedly connected to the front upper plate 1 of the front cross member of the roof panel by spot welding, and spot welding points 9 are formed at the connection; the rear upper plate 7 of the front cross member of the roof panel is fixedly connected to the lower plate 2 of the front cross member of the roof panel by spot welding, and spot welding points 10 are formed at the connection; the inner upper plate 3 of the A-pillar is fixedly connected to the A-pillar reinforcement plate 4 by spot welding, and spot welding points 11 are formed at the connection; the inner upper plate 3 of the A-pillar is fixedly connected to the lower plate 2 of the front cross member of the roof panel by spot welding, and spot welding points 6 are formed at the connection; the A-pillar reinforcement plate 4 is fixedly connected to the front upper plate 1 and the rear upper plate 7 of the front cross member of the roof panel by laser welding, and laser welding points 5 are formed at the connection. Of course, in other embodiments, the connections between the front upper plate 1, the rear upper plate 7, the lower plate 2 of the front cross member of the roof panel, the inner upper plate 3 of the A-pillar, and the A-pillar reinforcement plate 4 can all be welded and fixed by spot welding or all by laser welding; other connection methods such as screw connection and rivet connection can also be used to achieve connection and fixation.
[0023] In some preferred embodiments of the present invention, first flanges 21 and second flanges 22 are correspondingly provided at both side edges of the lower plate 2 of the front cross member of the roof panel. The first flange 21 is attached and fixedly connected to the inner side of one side edge of the front upper plate 1 of the front cross member of the roof panel (the side facing the inside of the first roof cross member cavity Ⅰ), making the connection between the front upper plate 1 and the lower plate 2 of the front cross member of the roof panel more firm and tight; the second flange 22 is attached and fixedly connected to the inner side of the other side edge of the rear upper plate 7 of the front cross member of the roof panel (the side facing the inside of the second roof cross member cavity Ⅱ), making the connection between the rear upper plate 7 and the lower plate 2 of the front cross member of the roof panel more firm and tight.
[0024] In some preferred embodiments of the present invention, a third flange 103 is provided at the side edge of the bent portion 101. The third flange 103 is attached and fixedly connected to the inner side of the middle part of the lower plate 2 of the front cross member of the roof panel (the side facing the inside of the first roof cross member cavity Ⅰ), making the connection between the front upper plate 1 and the lower plate 2 of the front cross member of the roof panel more firm and tight.
[0025] In some preferred embodiments of the present utility model, one side edge of the inner upper panel 3 of the A-pillar is fixedly connected to one side edge of the A-pillar reinforcement plate 4 to form the A-pillar upper joint cavity III. The inner side (the side facing the inside of the A-pillar upper joint cavity III) of the other side edge of the inner upper panel 3 of the A-pillar is attached and fixedly connected to the outer side (the side away from the center of the first roof crossbeam cavity I) of the end edge of the lower panel 2 of the front roof crossbeam. The outer side (the side away from the center of the A-pillar upper joint cavity III) of the other side edge of the A-pillar reinforcement plate 4 is respectively attached and fixedly connected to the inner side of the end edge of the front upper panel 1 of the front roof crossbeam and the inner side of the end edge of the rear upper panel 7 of the front roof crossbeam.
[0026] In some preferred embodiments of the present utility model, a fourth flanging 31 is provided on one side edge of the inner upper panel 3 of the A-pillar, and a fifth flanging 41 is provided on one side edge of the A-pillar reinforcement plate 4. The fourth flanging 31 and the fifth flanging 41 are attached and fixedly connected to make the connection between the inner upper panel 3 of the A-pillar and the A-pillar reinforcement plate 4 more firm and tight.
[0027] The assembly connection process of the roof crossbeam and A-pillar connection structure of the B-pillarless vehicle body of the present utility model is as follows:
[0028] First, the front upper panel 1 of the front roof crossbeam and the lower panel 2 of the front roof crossbeam are welded together by spot welding to form a first roof crossbeam cavity I; then, the inner upper panel 3 of the A-pillar and the A-pillar reinforcement plate 4 are welded together by spot welding to form an A-pillar upper joint cavity III; then, the front upper panel 1 of the front roof crossbeam and the lower panel 2 of the front roof crossbeam are pre-positioned above the A-pillar upper joint cavity III by a buckle, and the inner upper panel 3 of the A-pillar and the lower panel 2 of the front roof crossbeam are welded together by spot welding, and the A-pillar reinforcement plate 4 and the front upper panel 1 of the front roof crossbeam are welded together by laser welding to realize the connection between the first roof crossbeam cavity I and the A-pillar upper joint cavity III; finally, the rear upper panel 7 of the front roof crossbeam is fixedly connected to the front upper panel 1 of the front roof crossbeam and the lower panel 2 of the front roof crossbeam by spot welding to form a second roof crossbeam cavity II, and the A-pillar reinforcement plate 4 and the rear upper panel 7 of the front roof crossbeam are welded together by laser welding to realize the connection between the second roof crossbeam cavity II and the A-pillar upper joint cavity III.
[0029] The connection structure between the roof crossmember and the A-pillar of the B-pillarless body of the present utility model adopts a double-cavity structure design. Among them, the front upper plate 1 of the front roof crossmember is fixedly connected to the lower plate 2 of the front roof crossmember to form the first roof crossmember cavity Ⅰ. The rear upper plate 7 of the front roof crossmember is fixedly connected to the front upper plate 1 and the lower plate 2 of the front roof crossmember respectively to form the second roof crossmember cavity Ⅱ. The two roof crossmember cavities inside the connection structure between the roof crossmember and the A-pillar of the B-pillarless body can improve the body stiffness mode. In addition, a combined process connection method of spot welding and laser welding is used for the assembly connection of the connection structure between the roof crossmember and the A-pillar of the B-pillarless body. On the one hand, spot welding with low equipment requirements and simple operation is used for welding, which can simplify the assembly connection process. On the other hand, laser welding with strong technicality is used as a supplement, which can weld parts with a narrow welding operation space where spot welding is difficult to complete, and has great flexibility.
[0030] The present utility model also provides a vehicle, which includes the connection structure between the roof crossmember and the A-pillar of the B-pillarless body described above.
[0031] The above are only the preferred embodiments of the present utility model, and do not impose any formal restrictions on the present utility model. Those skilled in the art can make various equivalent changes and improvements on the basis of the above embodiments. Any equivalent changes or modifications made within the scope of the claims shall fall within the protection scope of the present utility model.
Claims
1. A connecting structure between a roof cross member and an A-pillar of a body without a B-pillar, characterized in that: It includes a front upper plate (1) of the front cross member of the roof panel, a rear upper plate (7) of the front cross member of the roof panel, a lower plate (2) of the front cross member of the roof panel, an inner upper plate (3) of the A-pillar, and an A-pillar reinforcement plate (4); the front upper plate (1) of the front cross member of the roof panel is fixedly connected to the lower plate (2) of the front cross member of the roof panel to form a first roof cross member cavity (Ⅰ); the rear upper plate (7) of the front cross member of the roof panel is respectively fixedly connected to the front upper plate (1) of the front cross member of the roof panel and the lower plate (2) of the front cross member of the roof panel to form a second roof cross member cavity (Ⅱ); the inner upper plate (3) of the A-pillar is fixedly connected to the A-pillar reinforcement plate (4) to form an A-pillar upper joint cavity (Ⅲ); the A-pillar upper joint cavity (Ⅲ) is respectively connected to the first roof cross member cavity (Ⅰ) and the second roof cross member cavity (Ⅱ), wherein the inner upper plate (3) of the A-pillar is fixedly connected to the lower plate (2) of the front cross member of the roof panel, and the A-pillar reinforcement plate (4) is respectively fixedly connected to the front upper plate (1) of the front cross member of the roof panel and the rear upper plate (7) of the front cross member of the roof panel.
2. The connection structure between the roof cross member and the A-pillar of the body without a B-pillar according to claim 1, characterized in that: One side edge of the front upper plate (1) of the front cross member of the roof panel is fixedly connected to one side edge of the lower plate (2) of the front cross member of the roof panel, the other side of the front upper plate (1) of the front cross member of the roof panel is bent towards the side of the lower plate (2) of the front cross member of the roof panel to form a bent portion (101), and the side edge of the bent portion (101) is fixedly connected to the middle of the lower plate (2) of the front cross member of the roof panel; the connection part (102) between the bent portion (101) and the front upper plate (1) of the front cross member of the roof panel is fixedly connected to one side edge of the rear upper plate (7) of the front cross member of the roof panel, and the other side edge of the rear upper plate (7) of the front cross member of the roof panel is fixedly connected to the other side edge of the lower plate (2) of the front cross member of the roof panel.
3. The connection structure between the roof crossmember and the A-pillar of the body without a B-pillar according to claim 2, characterized in that: First flanges (21) and second flanges (22) are correspondingly arranged on both side edges of the lower plate (2) of the front cross member of the roof panel, the first flange (21) is attached and fixedly connected to the inner side of one side edge of the front upper plate (1) of the front cross member of the roof panel, and the second flange (22) is attached and fixedly connected to the inner side of the other side edge of the rear upper plate (7) of the front cross member of the roof panel.
4. The connection structure between the roof cross member and the A-pillar of the body without a B-pillar according to claim 3, characterized in that: A third flange (103) is arranged on the side edge of the bent portion (101), and the third flange (103) is attached and fixedly connected to the inner side of the middle of the lower plate (2) of the front cross member of the roof panel.
5. The connection structure between the roof crossmember and the A-pillar of the body without a B-pillar according to claim 1, characterized in that: One side edge of the inner upper plate (3) of the A-pillar is fixedly connected to one side edge of the A-pillar reinforcement plate (4) to form the A-pillar upper joint cavity (Ⅲ), the inner side of the other side edge of the inner upper plate (3) of the A-pillar is attached and fixedly connected to the outer side of the end edge of the lower plate (2) of the front cross member of the roof panel, and the outer sides of the other side edges of the A-pillar reinforcement plate (4) are respectively attached and fixedly connected to the inner sides of the end edges of the front upper plate (1) of the front cross member of the roof panel and the inner sides of the end edges of the rear upper plate (7) of the front cross member of the roof panel.
6. The connection structure between the roof cross member and the A-pillar of the body without B-pillar according to claim 5, characterized in that: A fourth flange (31) is arranged on one side edge of the inner upper plate (3) of the A-pillar, a fifth flange (41) is arranged on one side edge of the A-pillar reinforcement plate (4), and the fourth flange (31) is attached and fixedly connected to the fifth flange (41).
7. The connection structure between the roof cross member and the A-pillar of the body without a B-pillar according to any one of claims 1-6, characterized in that: The front upper plate (1) of the front cross member of the roof panel is fixedly connected to the lower plate (2) of the front cross member of the roof panel by spot welding. The rear upper plate (7) of the front cross member of the roof panel is fixedly connected to the front upper plate (1) and the lower plate (2) of the front cross member of the roof panel by spot welding. The inner upper plate (3) of the A-pillar is fixedly connected to the A-pillar reinforcement plate (4) by spot welding. The inner upper plate (3) of the A-pillar is fixedly connected to the lower plate (2) of the front cross member of the roof panel by spot welding. The A-pillar reinforcement plate (4) is fixedly connected to the front upper plate (1) and the rear upper plate (7) of the front cross member of the roof panel by laser welding.
8. A vehicle, characterized in that: It includes the connection structure between the roof cross member and the A-pillar of the body without B-pillar according to any one of claims 1-7.