Double-door-ring structure and vehicle
Through the double door ring structure design of hot-press molding after docking, the problems of multiple parts and complex processes in the prior art are solved, lightweight and high collision performance are achieved, and production efficiency is improved.
Patent Information
- Application Number
- CN202420653642.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-01
- Publication Date
- 2025-04-18
- Estimated Expiration
- 2034-04-01
AI Technical Summary
The existing double door ring structure has problems such as large number of parts and complex processes, which leads to low production efficiency and difficult for vehicles to have both light weight and good survivability after collision.
The A-pillar structure, B-pillar structure and C-pillar structure are used to be heat-pressed and formed after docking to reduce the number of parts and improve production efficiency. At the same time, through the different strength designs of the upper and lower sections of the B-pillar, a structure with strong upper and weak upper parts is formed, which improves the energy absorption capacity of the vehicle during collision and the sturdiness of the passenger compartment.
It realizes the lightweight and high collision performance of the double door ring structure, improves production efficiency, and meets the needs of lower energy consumption and higher range of cars.
Smart Images
Figure CN222769478U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of vehicle bodies, in particular to a double door ring structure and a vehicle. Background Art
[0002] As people's requirements for the economic use of cars continue to increase, people have lower energy consumption and higher mileage requirements for cars, which requires cars to have a lighter weight. At the same time, in order to meet increasingly stringent collision regulations, vehicles need to have a stronger structure so that they can provide enough living space when absorbing collision energy. In addition, with the increase in labor costs and the popularization of intelligent manufacturing, car companies need to have higher production efficiency, which requires car companies to produce with fewer parts, fewer production processes and less manpower.
[0003] For example, an existing double door ring structure is formed by hot stamping after welding six parts, namely, the A-pillar upper inner panel, the A-pillar lower inner panel, the door sill inner panel, the B-pillar inner panel, the C-pillar inner panel and the top cover side beam. It has the problems of a large number of parts and complex processes.
[0004] However, in the existing technology, automobile companies have low production efficiency, and the vehicles they produce have difficulty in achieving both light weight and good survivability after a collision. Utility Model Content
[0005] The technical problem to be solved by the utility model is: in view of the problems of a large number of parts and a complicated process in the existing double door ring structure, a double door ring structure and a vehicle are provided.
[0006] In order to solve the above technical problems, on the one hand, the embodiment of the utility model provides a double door ring structure, including an A-pillar structure, a B-pillar structure and a C-pillar structure, the front side of the B-pillar structure is docked with the A-pillar structure, and the B-pillar structure and the A-pillar structure are enclosed to form a front door opening, the rear side of the B-pillar structure is docked with the C-pillar structure, and the B-pillar structure and the C-pillar structure are enclosed to form a rear door opening, and the A-pillar structure, the B-pillar structure and the C-pillar structure are docked from front to back in sequence and then integrally formed by hot pressing. The front and back, left and right, up and down, inside and outside in this embodiment refer to the horizontal placement of the car, among which the front refers to the front of the vehicle, the inside refers to the center of the vehicle passenger compartment, and other directions are based on this.
[0007] Optionally, the B-pillar structure includes a B-pillar upper section and a B-pillar lower section that are formed separately, and the lower side of the B-pillar upper section is butted against the upper side of the B-pillar lower section. In this embodiment, linear laser welding is used between the A-pillar structure, the B-pillar structure and the C-pillar structure, and between the B-pillar upper section and the B-pillar lower section, which is conducive to reducing welding costs.
[0008] Optionally, the strength of the upper section of the B-pillar is greater than the strength of the lower section of the B-pillar. In this embodiment, the strength of the upper section of the B-pillar is greater than the strength of the lower section of the B-pillar, so that the B-pillar structure forms a structure that is strong at the top and weak at the bottom. When the vehicle body collides, it absorbs energy while providing a more solid passenger compartment, greatly improving the survivability of the occupants. Therefore, the double door ring structure in this embodiment has the characteristics of light weight and good survivability after a collision. At the same time, in this embodiment, the upper section of the B-pillar and the lower section of the B-pillar can be made stronger than the lower section of the B-pillar by means of thermoforming materials of different strengths, different thicknesses, zoned softening, etc.
[0009] Optionally, the upper section of the B-pillar is made of high-strength thermoforming material, and the lower section of the B-pillar is made of low-strength thermoforming material. In this embodiment, the upper section of the B-pillar and the lower section of the B-pillar are made of thermoforming materials with different strengths to achieve different strengths.
[0010] Optionally, the upper section of the B-pillar and the lower section of the B-pillar are both made of high-strength thermoformed material, and the material thickness of the upper section of the B-pillar is greater than the material thickness of the lower section of the B-pillar. In this embodiment, the upper section of the B-pillar and the lower section of the B-pillar are made of the same material, and the difference in strength between the two is achieved through the difference in thickness.
[0011] Optionally, the B-pillar upper section has a B-pillar upper section front end, a B-pillar upper section rear end and a B-pillar upper section lower end, the rear side of the B-pillar upper section front end is connected to the front side of the B-pillar upper section rear end, and the upper side of the B-pillar upper section lower end is connected to the connection between the B-pillar upper section front end and the B-pillar upper section rear end; the B-pillar upper section front end and the B-pillar upper section rear end extend in the vehicle length direction, and the B-pillar upper section lower end extends in the vehicle height direction;
[0012] The B-pillar lower section has a front end, a rear end and an upper end of the B-pillar lower section. The rear side of the front end of the B-pillar lower section is connected to the front side of the rear end of the B-pillar lower section, the lower side of the upper end of the B-pillar lower section is connected to the connection between the front end of the B-pillar lower section and the rear end of the B-pillar lower section, and the upper side of the upper end of the B-pillar lower section is butted against the lower side of the lower end of the B-pillar upper section. The front end and the rear end of the B-pillar lower section extend in the length direction of the vehicle, and the upper end of the B-pillar lower section extends in the height direction of the vehicle.
[0013] Optionally, the A-pillar structure includes an A-pillar body, an A-pillar upper side beam and an A-pillar lower side beam, the front side of the A-pillar upper side beam is connected to the upper side of the A-pillar body, the rear side of the A-pillar upper side beam is butted against the front side of the front end of the B-pillar upper section, the front side of the A-pillar lower side beam is connected to the lower side of the A-pillar body, and the rear side of the A-pillar lower side beam is butted against the front side of the front end of the B-pillar lower section;
[0014] The C-pillar structure includes a C-pillar body, a C-pillar upper side beam and a C-pillar lower side beam. The rear side of the C-pillar upper side beam is connected to the upper side of the C-pillar body, the front side of the C-pillar upper side beam is butted against the rear side of the rear end of the B-pillar upper section, the rear side of the C-pillar lower side beam is connected to the lower side of the C-pillar body, and the front side of the C-pillar lower side beam is butted against the rear side of the rear end of the B-pillar lower section.
[0015] Optionally, the rear side of the A-pillar upper side beam is butted against the front side of the front end of the B-pillar upper section to form a first butt joint gap, the rear side of the A-pillar lower side beam is butted against the front side of the front end of the B-pillar lower section to form a second butt joint gap, and the first butt joint gap and the second butt joint gap are collinear; the front side of the C-pillar upper side beam is butted against the rear side of the rear end of the B-pillar upper section to form a third butt joint gap, the front side of the C-pillar lower side beam is butted against the rear side of the rear end of the B-pillar lower section to form a fourth butt joint gap, and the third butt joint gap and the fourth butt joint gap are collinear. By having the first butt joint gap and the second butt joint gap collinear, and the third butt joint gap and the fourth butt joint gap collinear, the accuracy of the device can be improved.
[0016] Optionally, the double door ring structure also includes an A-pillar patch plate, the front door opening has a front upper corner, a rear upper corner, a front lower corner and a rear lower corner, the A-pillar patch plate is attached to the A-pillar upper beam, and the front boundary of the A-pillar patch plate extends forward to between the rear point of the front upper corner of the front door opening and the rear point of the front lower corner of the front door opening; the rear door opening has a front upper corner, a rear upper corner, a front lower corner and a rear lower corner, and the rear boundary of the A-pillar patch plate extends backward to between the rear point of the front upper corner of the rear door opening and the front point of the rear upper corner of the rear door opening. In this embodiment, some marks are made in the drawings for easy understanding, a is the rear point of the front upper corner of the front door opening, b is the front point of the rear upper corner of the front door opening, d is the rear point of the front lower corner of the front door opening, c is the front point of the rear lower corner of the front door opening, e is the rear point of the front upper corner of the rear door opening, f is the front point of the rear upper corner of the rear door opening, h is the rear point of the front lower corner of the rear door opening, and g is the front point of the rear lower corner of the rear door opening. Among them, the front door opening is the hollow part after the front upper corner, rear upper corner, front lower corner and rear lower corner of the front door opening are connected by the side line; the rear door opening is the hollow part after the front upper corner, rear upper corner, front lower corner and rear lower corner of the rear door opening are connected by the side line. The front boundary of the A-pillar patch plate is located between a and d, which helps to improve the deformation resistance of the A-pillar in a frontal collision. The rear boundary of the A-pillar patch plate is located between e and f, which helps to improve the side collision performance and the ability to resist top pressure deformation.
[0017] Optionally, the double door ring structure also includes a B-pillar patch plate, which is attached to the B-pillar structure. The B-pillar structure is provided with a first-row seat belt upper fixing point and a lower hinge mounting point, and the upper boundary of the B-pillar patch plate is higher than the first-row seat belt upper fixing point, and the lower boundary of the B-pillar patch plate is higher than the lower hinge mounting point.
[0018] Optionally, the upper side of the upper end of the lower section of the B-pillar is butted against the lower side of the lower end of the upper section of the B-pillar to form a fifth butt joint gap, and the fifth butt joint gap is located at the lower side of the lower boundary of the B-pillar patch plate. In this embodiment, the fifth butt joint gap is avoided to appear between the upper boundary and the lower boundary of the B-pillar patch plate, and the boundary position of the specific B-pillar patch plate is also determined according to the side collision simulation requirements, so that the B-pillar structure is strong at the top and weak at the bottom, providing a more solid passenger compartment while absorbing energy, and greatly improving the survivability of the occupants.
[0019] Optionally, the B-pillar structure comprises a B-pillar top section, a B-pillar bottom section and a B-pillar vertical section, the upper end of the B-pillar vertical section is connected to the middle of the B-pillar top section, and the lower end of the B-pillar vertical section is connected to the middle of the B-pillar bottom section; the B-pillar top section and the B-pillar bottom section extend in the vehicle length direction, and the B-pillar vertical section extends in the vehicle height direction. In this embodiment, the B-pillar structure is an integral whole.
[0020] Optionally, the A-pillar structure includes an A-pillar body, an A-pillar upper side beam and an A-pillar lower side beam, the front side of the A-pillar upper side beam is connected to the upper side of the A-pillar body, the rear side of the A-pillar upper side beam is butted against the front side of the B-pillar top section, the front side of the A-pillar lower side beam is connected to the lower side of the A-pillar body, and the rear side of the A-pillar lower side beam is butted against the front side of the B-pillar lower bottom section;
[0021] The C-pillar structure includes a C-pillar body, a C-pillar upper side beam and a C-pillar lower side beam. The rear side of the C-pillar upper side beam is connected to the upper side of the C-pillar body, the front side of the C-pillar upper side beam is butted against the rear side of the B-pillar top section, the rear side of the C-pillar lower side beam is connected to the lower side of the C-pillar body, and the front side of the C-pillar lower side beam is butted against the rear side of the B-pillar bottom section.
[0022] Optionally, the B-pillar structure includes an upper section of the B-pillar, a heat-affected transition zone and a lower section of the B-pillar, the top section of the B-pillar and the upper section of the B-pillar vertical section form the upper section of the B-pillar, and the bottom section of the B-pillar and the lower section of the B-pillar vertical section form the lower section of the B-pillar; both the upper section of the B-pillar and the lower section of the B-pillar are made of high-strength hot-formed materials, the heat-affected transition zone is made by weakening the lower section of the B-pillar during hot pressing, and the heat-affected transition zone is connected between the upper section of the B-pillar and the lower section of the B-pillar; the upper section of the B-pillar, the heat-affected transition zone and the lower section of the B-pillar are integrally formed to form the B-pillar structure. In this embodiment, the upper section of the B-pillar and the lower section of the B-pillar are a whole, and the difference in strength between the upper section of the B-pillar and the lower section of the B-pillar is achieved by means of an in-mold soft zone process.
[0023] Optionally, the B-pillar structure includes an upper section of the B-pillar, a material thickness transition zone and a lower section of the B-pillar, the top section of the B-pillar and the upper section of the B-pillar vertical section form the upper section of the B-pillar, and the bottom section of the B-pillar and the lower section of the B-pillar vertical section form the lower section of the B-pillar; the upper section of the B-pillar and the lower section of the B-pillar are both made of high-strength hot-formed materials, the upper section of the B-pillar, the material thickness transition zone and the lower section of the B-pillar are plates of different thicknesses formed by rolling the same piece of material, and the material thickness transition zone is connected between the upper section of the B-pillar and the lower section of the B-pillar; the plate thickness of the upper section of the B-pillar is greater than the plate thickness of the lower section of the B-pillar; the upper section of the B-pillar, the material thickness transition zone and the lower section of the B-pillar are integrally formed to form the B-pillar structure.
[0024] Optionally, the thickness of the C-pillar structure before hot pressing is greater than or equal to 1.0 mm.
[0025] Optionally, the thickness of the B-pillar structure before hot pressing is greater than the thickness of the C-pillar structure before hot pressing, and the difference in thickness between the B-pillar structure and the C-pillar structure before hot pressing is less than or equal to 2 mm. If the thickness of the C-pillar structure is too thin, it is easy to cause large deformation, which is not conducive to the precision control of the device. At the same time, the difference in thickness between the B-pillar structure and the C-pillar structure should not be too large, otherwise the thick material will not be heated sufficiently, or the thin material will be over-burned, affecting the size and performance of the door ring. At the same time, the C-pillar structure can be replaced with a softer material according to the requirements of the side collision simulation analysis to achieve energy absorption and improve the side collision performance.
[0026] According to the double door ring structure of this embodiment, the A-pillar structure, the B-pillar structure and the C-pillar structure are connected in sequence by docking, and after the A-pillar structure, the B-pillar structure and the C-pillar structure are docked, they are integrally formed by hot pressing. Compared with the traditional method of spot welding connection by overlapping structures, the overall structure can be made lighter, meeting people's pursuit of lower energy consumption and higher driving range of automobiles. At the same time, the double door ring structure of this embodiment hot presses multiple parts of the A-pillar structure, the B-pillar structure and the C-pillar structure into one piece, reducing the number of molds, clamps, inspections and process personnel configuration, greatly improving production efficiency.
[0027] On the other hand, an embodiment of the present invention provides a vehicle, comprising the above-mentioned double door ring structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 It is a structural schematic diagram of a double door knocker structure provided by an embodiment of the utility model from a first viewing angle;
[0029] Figure 2 It is a structural schematic diagram of a double door knocker structure provided by an embodiment of the utility model from a second viewing angle;
[0030] Figure 3 This is an exploded view of a double door knocker structure provided by an embodiment of the utility model;
[0031] Figure 4 This is a simplified structural diagram of a double door ring structure provided by an embodiment of the utility model;
[0032] Figure 5 is along Figure 2 Schematic diagram of the structure of the CC cutaway;
[0033] Figure 6 is along Figure 2 Schematic diagram of the structure of the middle BB cut open;
[0034] Figure 7 The utility model provides an embodiment of the Figure 1 Schematic diagram of the structure of the AA section;
[0035] Figure 8 Another embodiment of the present invention provides Figure 1 Schematic diagram of the structure of the AA section;
[0036] Fig. 9 Another embodiment of the present invention provides Figure 1 Schematic diagram of the structure cut through AA.
[0037] The reference numerals in the specification are as follows:
[0038] 1. A-pillar structure; 2. B-pillar structure; 3. C-pillar structure; 4. A-pillar patch plate; 5. B-pillar patch plate; 6. Front door opening; 7. Rear door opening; 11. A-pillar body; 12. A-pillar upper side beam; 13. A-pillar lower side beam; 21. B-pillar upper section; 22. B-pillar lower section; 31. C-pillar body; 32. C-pillar upper side beam; 33. C-pillar lower side beam; 211. B-pillar upper section front end; 212. B-pillar upper section rear end; 213. B-pillar upper section lower end; 221. B-pillar lower section front end; 222. B-pillar lower section rear end; 223. The upper end of the lower section of the pillar; a, the rear point of the front upper corner of the front door opening; b, the front point of the rear upper corner of the front door opening; d, the rear point of the front lower corner of the front door opening; c, the front point of the rear lower corner of the front door opening; e, the rear point of the front upper corner of the rear door opening; f, the front point of the rear upper corner of the rear door opening; h, the rear point of the front lower corner of the rear door opening; g, the front point of the rear lower corner of the rear door opening; Ba, the upper boundary of the B-pillar patch plate; Bb, the lower boundary of the B-pillar patch plate; W1, the first docking gap; W2, the second docking gap; W3, the third docking gap; W4, the fourth docking gap boundary. DETAILED DESCRIPTION
[0039] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0040] like Figures 1 to 9 As shown, an embodiment of the utility model provides a double door ring structure, including an A-pillar structure 1, a B-pillar structure 2 and a C-pillar structure 3, the front side of the B-pillar structure 2 is connected to the A-pillar structure 1, and the B-pillar structure 2 and the A-pillar structure 1 are enclosed to form a front door opening 6, the rear side of the B-pillar structure 2 is connected to the C-pillar structure 3, and the B-pillar structure 2 and the C-pillar structure 3 are enclosed to form a rear door opening 7, and the A-pillar structure 1, the B-pillar structure 2 and the C-pillar structure 3 are connected in sequence from front to back and then integrally formed by hot pressing. The front and back, left and right, up and down, inside and outside in this embodiment refer to the horizontal position of the car, among which the front refers to the front of the vehicle, the inside refers to the center of the vehicle passenger compartment, and other positions are based on this.
[0041] In one embodiment, the B-pillar structure 2 includes a B-pillar upper section 21 and a B-pillar lower section 22 which are formed separately, and the lower side of the B-pillar upper section 21 is butted with the upper side of the B-pillar lower section 22. In this embodiment, linear laser welding is adopted between the A-pillar structure 1, the B-pillar structure 2 and the C-pillar structure 3, and between the B-pillar upper section 21 and the B-pillar lower section 22, which is conducive to reducing the welding cost.
[0042] In one embodiment, the strength of the upper section 21 of the B-pillar is greater than the strength of the lower section 22 of the B-pillar. In this embodiment, by designing that the strength of the upper section 21 of the B-pillar is greater than the strength of the lower section 22 of the B-pillar, the B-pillar structure 2 forms a structure that is strong at the top and weak at the bottom. When the vehicle body collides, it absorbs energy while providing a more solid passenger compartment, greatly improving the survivability of the occupants. Therefore, the double door ring structure in this embodiment has the characteristics of light weight and good survivability after collision. At the same time, in this embodiment, the upper section 21 of the B-pillar and the lower section 22 of the B-pillar can be made stronger than the strength of the lower section 22 of the B-pillar by means of thermoforming materials of different strengths, different thicknesses, and zone softening.
[0043] In one embodiment, the B-pillar upper section 21 is made of high-strength thermoforming material, and the B-pillar lower section 22 is made of low-strength thermoforming material. In this embodiment, the B-pillar upper section 21 and the B-pillar lower section 22 are made of thermoforming materials with different strengths to achieve different strengths.
[0044] like Figure 7 As shown, in one embodiment, both the upper B-pillar section 21 and the lower B-pillar section 22 are made of high-strength thermoformed material, and the material thickness of the upper B-pillar section 21 is greater than the material thickness of the lower B-pillar section 22. In this embodiment, the upper B-pillar section 21 and the lower B-pillar section 22 are made of the same material, and the difference in strength between the two is achieved through the difference in thickness.
[0045] In one embodiment, the upper section 21 of the B-pillar is in a "T" shape, and the lower section 22 of the B-pillar is in an inverted "T" shape;
[0046] The B-pillar upper section 21 has a B-pillar upper section front end 211, a B-pillar upper section rear end 212 and a B-pillar upper section lower end 213. The rear side of the B-pillar upper section front end 211 is connected to the front side of the B-pillar upper section rear end 212, and the upper side of the B-pillar upper section lower end 213 is connected to the connection between the B-pillar upper section front end 211 and the B-pillar upper section rear end 212. The B-pillar upper section front end 211 and the B-pillar upper section rear end 212 extend in the vehicle length direction, and the B-pillar upper section lower end 213 extends in the vehicle height direction.
[0047] The B-pillar lower section 22 has a B-pillar lower section front end 221, a B-pillar lower section rear end 222 and a B-pillar lower section upper end 223. The rear side of the B-pillar lower section front end 221 is connected to the front side of the B-pillar lower section rear end 222, the lower side of the B-pillar lower section upper end 223 is connected to the connection between the B-pillar lower section front end 221 and the B-pillar lower section rear end 222, and the upper side of the B-pillar lower section upper end 223 is butted against the lower side of the B-pillar upper section lower end 213; the B-pillar lower section front end 221 and the B-pillar lower section rear end 222 extend in the vehicle length direction, and the B-pillar lower section upper end 223 extends in the vehicle height direction.
[0048] In one embodiment, the A-pillar structure 1 includes an A-pillar body 11, an A-pillar upper side beam 12, and an A-pillar lower side beam 13. The front side of the A-pillar upper side beam 12 is connected to the upper side of the A-pillar body 11, and the rear side of the A-pillar upper side beam 12 is butted against the front side of the front end 211 of the B-pillar upper section. The front side of the A-pillar lower side beam 13 is connected to the lower side of the A-pillar body 11, and the rear side of the A-pillar lower side beam 13 is butted against the front side of the front end 221 of the B-pillar lower section.
[0049] The C-pillar structure 3 includes a C-pillar body 31, a C-pillar upper side beam 32 and a C-pillar lower side beam 33. The rear side of the C-pillar upper side beam 32 is connected to the upper side of the C-pillar body 31, the front side of the C-pillar upper side beam 32 is butted against the rear side of the rear end 212 of the B-pillar upper section, the rear side of the C-pillar lower side beam 33 is connected to the lower side of the C-pillar body 31, and the front side of the C-pillar lower side beam 33 is butted against the rear side of the rear end 222 of the B-pillar lower section.
[0050] In one embodiment, the rear side of the A-pillar upper side beam 12 is butted against the front side of the B-pillar upper section front end 211 to form a first butt joint gap W1, the rear side of the A-pillar lower side beam 13 is butted against the front side of the B-pillar lower section front end 221 to form a second butt joint gap W2, and the first butt joint gap W1 and the second butt joint gap W2 are collinear; the front side of the C-pillar upper side beam 32 is butted against the rear side of the B-pillar upper section rear end 212 to form a third butt joint gap W3, the front side of the C-pillar lower side beam 33 is butted against the rear side of the B-pillar lower section rear end 222 to form a fourth butt joint gap W4, and the third butt joint gap W3 and the fourth butt joint gap W4 are collinear. By having the first butt joint gap W1 and the second butt joint gap W2 collinearly, and the third butt joint gap W3 and the fourth butt joint gap W4 collinearly, the accuracy of the device can be improved. In this embodiment, the first butt joint gap W1 is located between a and b, the second butt joint gap W2 is located between c and d, the third butt joint gap W3 is located between e and f, and the fourth butt joint gap W4 is located between g and h.
[0051] In one embodiment, the double door ring structure also includes an A-pillar patch plate 4, the front door opening 6 has a front upper corner, a rear upper corner, a front lower corner and a rear lower corner, the A-pillar patch plate 4 is attached to the A-pillar upper side beam 12, and the front boundary of the A-pillar patch plate 4 extends forward to between the rear point a of the front upper corner of the front door opening 6 and the rear point d of the front lower corner of the front door opening; the rear door opening 7 has a front upper corner, a rear upper corner, a front lower corner and a rear lower corner, and the rear boundary of the A-pillar patch plate 4 extends backward to between the rear point e of the front upper corner of the rear door opening and the front point f of the rear upper corner of the rear door opening. In this embodiment, some marks are made in the drawings for easy understanding, a is the rear point of the front upper corner of the front door opening, b is the front point of the rear upper corner of the front door opening, d is the rear point of the front lower corner of the front door opening, c is the front point of the rear lower corner of the front door opening, e is the rear point of the front upper corner of the rear door opening, f is the front point of the rear upper corner of the rear door opening, h is the rear point of the front lower corner of the rear door opening, and g is the front point of the rear lower corner of the rear door opening. Among them, the front door opening is the hollow part after the front upper corner, rear upper corner, front lower corner and rear lower corner of the front door opening are connected by the side line; the rear door opening is the hollow part after the front upper corner, rear upper corner, front lower corner and rear lower corner of the rear door opening are connected by the side line. This helps to improve the deformation resistance of the A-pillar in a frontal collision. The rear boundary of the A-pillar patch plate 4 is located between e and f, which not only helps to improve the side collision performance, but also improves the ability to resist top pressure deformation.
[0052] In one embodiment, the double door ring structure also includes a B-pillar patch plate 5, which is attached to the B-pillar structure 2. The B-pillar structure 2 is provided with a first row seat belt upper fixing point and a lower hinge installation point, and the upper boundary Ba of the B-pillar patch plate is higher than the first row seat belt upper fixing point, and the lower boundary Bb of the B-pillar patch plate is higher than the lower hinge installation point.
[0053] like Figure 1 , 4 and Figure 7As shown, in one embodiment, the upper side of the upper end 223 of the B-pillar lower section is butted against the lower side of the lower end 213 of the B-pillar upper section to form a fifth butt joint gap ( Figure 7 In W5, the fifth butt joint gap is located at the lower side of the lower boundary Bb of the B-pillar patch plate. In this embodiment, the fifth butt joint gap is located between b and c. The fifth butt joint gap is avoided to appear between the upper boundary Ba of the B-pillar patch plate and the lower boundary Bb of the B-pillar patch plate. The boundary position of the specific B-pillar patch plate 5 will also be determined according to the side collision simulation requirements, so that the B-pillar structure 2 is strong at the top and weak at the bottom, providing a stronger passenger compartment while absorbing energy, and greatly improving the survivability of the occupants.
[0054] In one embodiment, the B-pillar structure 2 is in an “I” shape and is integrally formed;
[0055] The B-pillar structure 2 comprises a B-pillar top section, a B-pillar bottom section and a B-pillar vertical section, the upper end of the B-pillar vertical section is connected to the middle of the B-pillar top section, and the lower end of the B-pillar vertical section is connected to the middle of the B-pillar bottom section; the B-pillar top section and the B-pillar bottom section extend in the vehicle length direction, and the B-pillar vertical section extends in the vehicle height direction. In this embodiment, the B-pillar structure 2 is a whole.
[0056] In one embodiment, the A-pillar structure 1 includes an A-pillar body 11, an A-pillar upper side beam 12, and an A-pillar lower side beam 13. The front side of the A-pillar upper side beam 12 is connected to the upper side of the A-pillar body 11, the rear side of the A-pillar upper side beam 12 is butted against the front side of the B-pillar top section, the front side of the A-pillar lower side beam 13 is connected to the lower side of the A-pillar body 11, and the rear side of the A-pillar lower side beam 13 is butted against the front side of the B-pillar lower bottom section;
[0057] The C-pillar structure 3 includes a C-pillar body 31, a C-pillar upper side beam 32 and a C-pillar lower side beam 33. The rear side of the C-pillar upper side beam 32 is connected to the upper side of the C-pillar body 31, the front side of the C-pillar upper side beam 32 is butted against the rear side of the B-pillar top section, the rear side of the C-pillar lower side beam 33 is connected to the lower side of the C-pillar body 31, and the front side of the C-pillar lower side beam 33 is butted against the rear side of the B-pillar bottom section.
[0058] like Figure 8 As shown, in one embodiment, the B-pillar structure 2 includes a B-pillar upper section 21, a heat-affected transition zone ( Figure 8W5 in the figure) and the lower section of the B-pillar 22, the top section of the B-pillar and the upper section of the vertical section of the B-pillar form the upper section of the B-pillar 21, and the bottom section of the B-pillar and the lower section of the vertical section of the B-pillar form the lower section of the B-pillar 22; the upper section of the B-pillar 21 and the lower section of the B-pillar 22 are both made of high-strength hot-formed materials, the heat-affected transition zone is made by weakening the strength of the lower section of the B-pillar 22 during the hot pressing process, and the heat-affected transition zone is connected between the upper section of the B-pillar 21 and the lower section of the B-pillar 22; the upper section of the B-pillar 21, the heat-affected transition zone and the lower section of the B-pillar 22 are integrally formed to form a B-pillar structure 2 in the shape of an "I". In this embodiment, the upper section of the B-pillar 21 and the lower section of the B-pillar 22 are an integral whole, and the difference in strength between the upper section of the B-pillar 21 and the lower section of the B-pillar 22 is achieved by means of the in-mold soft zone process.
[0059] like Fig. 9 As shown, in one embodiment, the B-pillar structure 2 includes a B-pillar upper section 21, a material thickness transition zone ( Fig. 9 W5 in the figure and the lower section 22 of the B-pillar, the top section of the B-pillar and the upper section of the vertical section of the B-pillar form the upper section 21 of the B-pillar, and the bottom section of the B-pillar and the lower section of the vertical section of the B-pillar form the lower section 22 of the B-pillar; the upper section 21 of the B-pillar and the lower section 22 of the B-pillar are both made of high-strength hot-formed materials, the upper section 21 of the B-pillar, the material thickness transition zone and the lower section 22 of the B-pillar are plates of different thicknesses formed by rolling the same sheet of material, the plate thickness of the upper section 21 of the B-pillar is greater than the plate thickness of the lower section 22 of the B-pillar, and the material thickness transition zone is connected between the upper section 21 of the B-pillar and the lower section 22 of the B-pillar; the upper section 21 of the B-pillar, the material thickness transition zone and the lower section 22 of the B-pillar are integrally formed and form a B-pillar structure 2 in the shape of an "I". In this embodiment, both are made of high-strength hot-formed materials, but they are plates of unequal thicknesses rolled from material sheets, so that the plate thickness of the upper section 21 of the B-pillar is greater than the plate thickness of the lower section 22 of the B-pillar. In this embodiment, the B-pillar upper section 21 and the B-pillar lower section 22 are integrated, and the difference in strength is achieved by the difference in thickness between the two sections.
[0060] In one embodiment, the thickness of the C-pillar structure 3 before hot pressing is greater than or equal to 1.0 mm.
[0061] In one embodiment, the thickness of the B-pillar structure 2 before hot pressing is greater than the thickness of the C-pillar structure 3 before hot pressing, and the difference in thickness between the B-pillar structure 2 and the C-pillar structure 3 before hot pressing is less than or equal to 2 mm. If the thickness of the C-pillar structure 3 is too thin, it is easy to cause large deformation, which is not conducive to the precision control of the device. At the same time, the difference in thickness between the B-pillar structure 2 and the C-pillar structure 3 should not be too large, otherwise the thick material will not be heated sufficiently, or the thin material will be over-burned, affecting the size and performance of the door ring. At the same time, the C-pillar structure 3 can be replaced with a softer material according to the requirements of the side collision simulation analysis to achieve energy absorption and improve the side collision performance.
[0062] According to the double door ring structure of this embodiment, the A-pillar structure 1, the B-pillar structure 2 and the C-pillar structure 3 are connected in sequence by docking, and after the A-pillar structure 1, the B-pillar structure 2 and the C-pillar structure 3 are docked, they are integrally formed by hot pressing. Compared with the traditional method of spot welding connection by overlapping structures, the overall structure can be made lighter, meeting people's pursuit of lower energy consumption and higher driving range of automobiles. At the same time, the double door ring structure of this embodiment hot presses multiple parts of the A-pillar structure 1, the B-pillar structure 2 and the C-pillar structure 3 into one piece, reducing the number of molds, clamps, inspections and process personnel configuration, greatly improving production efficiency.
[0063] In addition, an embodiment of the utility model provides a vehicle, comprising the double door ring structure of the above embodiment.
[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A double door knocker structure, characterized in that: It includes an A-pillar structure, a B-pillar structure and a C-pillar structure, wherein the front side of the B-pillar structure is butted against the A-pillar structure, and the B-pillar structure and the A-pillar structure are enclosed to form a front door opening, the rear side of the B-pillar structure is butted against the C-pillar structure, and the B-pillar structure and the C-pillar structure are enclosed to form a rear door opening, and the A-pillar structure, the B-pillar structure and the C-pillar structure are butted in sequence from front to back and then integrally formed by hot pressing; It also includes a B-pillar patch plate, which is attached to the B-pillar structure. The B-pillar structure is provided with a first-row seat belt upper fixing point and a lower hinge mounting point, and the upper boundary of the B-pillar patch plate is higher than the first-row seat belt upper fixing point, and the lower boundary of the B-pillar patch plate is higher than the lower hinge mounting point.
2. The double door knocker structure according to claim 1, characterized in that: The B-pillar structure includes a B-pillar upper section and a B-pillar lower section that are formed separately, and the lower side of the B-pillar upper section is butted against the upper side of the B-pillar lower section.
3. The double door knocker structure according to claim 2, characterized in that: The strength of the upper section of the B-pillar is greater than the strength of the lower section of the B-pillar.
4. The double door knocker structure according to claim 3, characterized in that: The upper section of the B-pillar is made of high-strength thermoforming material, and the lower section of the B-pillar is made of low-strength thermoforming material.
5. The double door knocker structure according to claim 3, characterized in that: The upper section of the B-pillar and the lower section of the B-pillar are both made of high-strength thermoformed material, and the material thickness of the upper section of the B-pillar is greater than the material thickness of the lower section of the B-pillar.
6. The double door knocker structure according to claim 2, characterized in that: The B-pillar upper section has a B-pillar upper section front end, a B-pillar upper section rear end and a B-pillar upper section lower end, the rear side of the B-pillar upper section front end is connected to the front side of the B-pillar upper section rear end, and the upper side of the B-pillar upper section lower end is connected to the connection between the B-pillar upper section front end and the B-pillar upper section rear end; the B-pillar upper section front end and the B-pillar upper section rear end extend in the vehicle length direction, and the B-pillar upper section lower end extends in the vehicle height direction; The B-pillar lower section has a front end, a rear end and an upper end of the B-pillar lower section. The rear side of the front end of the B-pillar lower section is connected to the front side of the rear end of the B-pillar lower section, the lower side of the upper end of the B-pillar lower section is connected to the connection between the front end of the B-pillar lower section and the rear end of the B-pillar lower section, and the upper side of the upper end of the B-pillar lower section is butted against the lower side of the lower end of the B-pillar upper section. The front end and the rear end of the B-pillar lower section extend in the length direction of the vehicle, and the upper end of the B-pillar lower section extends in the height direction of the vehicle.
7. The double door knocker structure according to claim 6, characterized in that: The A-pillar structure includes an A-pillar body, an A-pillar upper side beam and an A-pillar lower side beam, the front side of the A-pillar upper side beam is connected to the upper side of the A-pillar body, the rear side of the A-pillar upper side beam is butted against the front side of the front end of the B-pillar upper section, the front side of the A-pillar lower side beam is connected to the lower side of the A-pillar body, and the rear side of the A-pillar lower side beam is butted against the front side of the front end of the B-pillar lower section; The C-pillar structure includes a C-pillar body, a C-pillar upper side beam and a C-pillar lower side beam. The rear side of the C-pillar upper side beam is connected to the upper side of the C-pillar body, the front side of the C-pillar upper side beam is butted against the rear side of the rear end of the B-pillar upper section, the rear side of the C-pillar lower side beam is connected to the lower side of the C-pillar body, and the front side of the C-pillar lower side beam is butted against the rear side of the rear end of the B-pillar lower section.
8. The double door knocker structure according to claim 7, characterized in that: The rear side of the A-pillar upper side beam is butted against the front side of the front end of the B-pillar upper section to form a first butt joint gap, the rear side of the A-pillar lower side beam is butted against the front side of the front end of the B-pillar lower section to form a second butt joint gap, and the first butt joint gap and the second butt joint gap are collinear; the front side of the C-pillar upper side beam is butted against the rear side of the rear end of the B-pillar upper section to form a third butt joint gap, the front side of the C-pillar lower side beam is butt joint against the rear side of the rear end of the B-pillar lower section to form a fourth butt joint gap, and the third butt joint gap and the fourth butt joint gap are collinear.
9. The double door knocker structure according to claim 7, characterized in that: It also includes an A-pillar patch plate, the front door opening has a front upper corner, a rear upper corner, a front lower corner and a rear lower corner, the A-pillar patch plate is attached to the A-pillar upper beam, and the front boundary of the A-pillar patch plate extends forward to between the rear point of the front upper corner of the front door opening and the rear point of the front lower corner of the front door opening; the rear door opening has a front upper corner, a rear upper corner, a front lower corner and a rear lower corner, and the rear boundary of the A-pillar patch plate extends backward to between the rear point of the front upper corner of the rear door opening and the front point of the rear upper corner of the rear door opening.
10. The double door knocker structure according to claim 6, characterized in that: The upper side of the upper end of the B-pillar lower section is butted against the lower side of the lower end of the B-pillar upper section to form a fifth butt joint gap, and the fifth butt joint gap is located on the lower side of the lower boundary of the B-pillar patch plate.
11. The double door knocker structure according to claim 1, characterized in that: The B-pillar structure comprises a B-pillar top section, a B-pillar bottom section and a B-pillar vertical section, the upper end of the B-pillar vertical section is connected to the middle of the B-pillar top section, and the lower end of the B-pillar vertical section is connected to the middle of the B-pillar bottom section; the B-pillar top section and the B-pillar bottom section extend in the vehicle length direction, and the B-pillar vertical section extends in the vehicle height direction.
12. The double door knocker structure according to claim 11, characterized in that: The A-pillar structure includes an A-pillar body, an A-pillar upper side beam and an A-pillar lower side beam, the front side of the A-pillar upper side beam is connected to the upper side of the A-pillar body, the rear side of the A-pillar upper side beam is butted against the front side of the B-pillar top section, the front side of the A-pillar lower side beam is connected to the lower side of the A-pillar body, and the rear side of the A-pillar lower side beam is butted against the front side of the B-pillar lower bottom section; The C-pillar structure includes a C-pillar body, a C-pillar upper side beam and a C-pillar lower side beam. The rear side of the C-pillar upper side beam is connected to the upper side of the C-pillar body, the front side of the C-pillar upper side beam is butted against the rear side of the B-pillar top section, the rear side of the C-pillar lower side beam is connected to the lower side of the C-pillar body, and the front side of the C-pillar lower side beam is butted against the rear side of the B-pillar bottom section.
13. The double door knocker structure according to claim 11, characterized in that: The B-pillar structure includes an upper section of the B-pillar, a heat-affected transition zone and a lower section of the B-pillar. The top section of the B-pillar and the upper section of the B-pillar vertical section form the upper section of the B-pillar, and the bottom section of the B-pillar and the lower section of the B-pillar vertical section form the lower section of the B-pillar. Both the upper section of the B-pillar and the lower section of the B-pillar are made of high-strength hot-formed materials. The heat-affected transition zone is obtained by weakening the lower section of the B-pillar during a hot pressing process. The heat-affected transition zone is connected between the upper section of the B-pillar and the lower section of the B-pillar. The upper section of the B-pillar, the heat-affected transition zone and the lower section of the B-pillar are integrally formed to form the B-pillar structure.
14. The double door knocker structure according to claim 11, characterized in that: The B-pillar structure includes an upper section of the B-pillar, a material thickness transition zone and a lower section of the B-pillar. The top section of the B-pillar and the upper section of the B-pillar vertical section form the upper section of the B-pillar, and the bottom section of the B-pillar and the lower section of the B-pillar vertical section form the lower section of the B-pillar. Both the upper section of the B-pillar and the lower section of the B-pillar are made of high-strength hot-formed materials. The upper section of the B-pillar, the material thickness transition zone and the lower section of the B-pillar are plates of different thicknesses formed by rolling the same piece of material. The material thickness transition zone is connected between the upper section of the B-pillar and the lower section of the B-pillar. The plate thickness of the upper section of the B-pillar is greater than the plate thickness of the lower section of the B-pillar. The upper section of the B-pillar, the material thickness transition zone and the lower section of the B-pillar are integrally formed to form the B-pillar structure.
15. The double door knocker structure according to claim 1, characterized in that: The thickness of the C-pillar structure before hot pressing is greater than or equal to 1.0 mm.
16. The double door knocker structure according to claim 1, characterized in that: The thickness of the B-pillar structure before hot pressing is greater than the thickness of the C-pillar structure before hot pressing, and the difference in thickness between the B-pillar structure and the C-pillar structure before hot pressing is less than or equal to 2 mm.
17. A vehicle, characterized in that: The invention comprises a double door ring structure as described in any one of claims 1 to 16.