Vehicle door ring structure and vehicle

Abstract

The present application relates to the technical field of vehicle door ring structures, and discloses a vehicle door ring structure and a vehicle. The vehicle door ring structure comprises a safety pillar and a tubular beam structure. An accommodating cavity is formed in the safety pillar. The tubular beam structure is arranged in the accommodating structure and is connected to the accommodating cavity by means of a first connection area and a second connection area, wherein a fixed connection is formed at the first connection area, and a flexible material connection is formed at the second connection area. The present application can solve the technical problem of low structural strength at safety pillars of existing vehicle door ring structures.

Description

Door ring structure and vehicle

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on January 5, 2024, with application number 202420031503.4 and application name “A Door Ring Structure and Automobile”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present application relates to, but is not limited to, the technical field of automobile door ring structures, and in particular to a door ring structure and an automobile. Background Art

[0003] The door ring structure, also known as the door ring or safety ring of the car, usually includes the A-pillar, B-pillar, C-pillar or D-pillar, roof and chassis. The car safety pillar is mainly used to protect the safety of the passengers in the vehicle. By connecting the front and rear parts of the vehicle body, the vehicle safety pillar can enhance the rigidity and torsional bending resistance of the entire vehicle body, thereby improving the safety of the vehicle during driving. In the event of a side collision, the safety pillar can effectively withstand part of the impact force and reduce the damage to the passengers in the vehicle. In the event of a rollover, the safety pillar can play a supporting role, reduce the deformation of the vehicle body and protect the safety of the passengers.

[0004] However, the cavity of existing vehicle safety pillars is generally filled with CBS material (a composite reinforcement material of nylon and epoxy resin) to enhance the structural strength of the vehicle safety pillars. However, CBS material is not only expensive to use, but also has limited effect on the structural strength of the safety pillars. In addition, CBS material has poor thermal conductivity. Summary of the Invention

[0005] The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

[0006] The embodiment of the present application provides a vehicle door ring structure and a vehicle. The following introduces various aspects of the embodiment of the present application.

[0007] In a first aspect, the present application provides a vehicle door ring structure, comprising a safety column and a tubular beam structure; the safety column is provided with a receiving cavity; the tubular beam structure is disposed in the receiving cavity and connected to the receiving cavity via a first connecting area and a second connecting area;

[0008] The first connection area is a fixed connection; the second connection area is a flexible material connection.

[0009] As an optional solution of this case, the tubular beam structure and the accommodating cavity are welded through the first connecting area.

[0010] As an optional solution of this case, the tubular beam structure and the accommodating cavity are bonded via the second connecting area.

[0011] As an optional solution of this case, a channel for absorbing energy and allowing electrophoretic liquid to enter and exit is provided between the tubular beam structure and the safety column.

[0012] As an optional solution of this case, the first connection areas and the second connection areas are arranged alternately.

[0013] As an optional solution of this case, the safety column is an A-column; the tubular beam structure is arranged in the accommodating cavity at the easily bent portion of the A-column.

[0014] As an optional solution in this case, the ends of the tubular beam structure are closed structures.

[0015] As an optional solution of this case, the tubular beam structure is a hot air expansion formed tubular beam.

[0016] As an optional solution of this case, the tubular beam structure and the safety column are arc welded in the first connection area; the tubular beam structure and the safety column are bonded with structural tape in the second connection area.

[0017] In a second aspect, the present application provides a car, comprising the door ring structure described in the first aspect or any optional solution in the first aspect.

[0018] In summary, the present application sets a tubular beam structure at the accommodating cavity of the safety column, which can reduce the material usage while improving the mechanical properties of the safety column such as structural strength, bending resistance, impact resistance, and force uniformity to a certain extent, thereby greatly improving the safety of the door ring structure, avoiding or reducing the deformation of the safety column due to collision, and thus improving the deformation resistance of the entire vehicle; in the present application, the safety column of the door ring structure is structurally strengthened by using a tubular beam structure, which can avoid or reduce the problem of insufficient electrophoretic baking of the accommodating cavity of the safety column when the safety column of the door ring structure is structurally strengthened using CBS material; in the present application, the safety column and the tubular beam structure are connected in a first connection area by a fixed connection, and the safety column and the tubular beam structure are connected in a second connection area by a flexible material. Connecting in this way can improve the flexibility and adaptability of the door ring structure manufacturing, and can absorb and disperse external forces to a certain extent, reduce the problem of structural damage, which is beneficial to improving the service life of the entire structure and ensuring structural redundancy. Even if a fixed connection point or a flexible material connection point is damaged, the other parts can still maintain normal connectivity, and the flexible connection can reduce the noise generated when the door ring structure vibrates; at the same time, by using both fixed and flexible material connections to connect the safety column and the tube beam structure, the manufacturing accuracy requirements for the safety column and the tube beam structure can be reduced when connecting the two, so that the safety column and the tube beam structure can be connected even if the structural matching degree is low, thereby reducing the manufacturing cost of the safety column and the tube beam structure and the difficulty of assembly connection, thereby reducing costs.

[0019] Still other aspects will become apparent upon reading and understanding the accompanying drawings and detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0021] FIG1 is a schematic structural diagram of a door ring structure of the present application;

[0022] FIG2 is a partial exploded view of the door ring structure of the present application;

[0023] FIG3 is a cross-sectional view of the structure at AA in FIG1 ;

[0024] FIG4 is a cross-sectional view of the structure at position BB in FIG1 ;

[0025] Figure 5 is a state diagram of a car when it is hit by a collision;

[0026] Explanation of component numbers: safety column 1, accommodating cavity 11, channel 12, welding hole 13, tubular beam structure 2, first connecting area 21, second connecting area 22. DETAILED DESCRIPTION

[0027] The following describes the embodiments of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification. The present application can also be implemented or applied through other different specific embodiments, and the various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the features in the following examples and embodiments can be combined with each other. It should also be understood that the terms used in the examples of the present application are for the purpose of describing specific embodiments, rather than for the purpose of limiting the scope of protection of the present application. The test methods for which specific conditions are not specified in the following examples are generally based on conventional conditions or the conditions recommended by the manufacturers.

[0028] Please refer to Figures 1 to 5. It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the restrictive conditions for the implementation of this application. Therefore, they have no technical substantive significance. Any structural modification, change in proportional relationship or adjustment of size, without affecting the efficacy and purpose that can be achieved by this application, should still fall within the scope of the technical content disclosed in this application. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of description and are not used to limit the scope of the implementation of this application. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of this application without substantially changing the technical content.

[0029] When numerical ranges are given in the examples, it should be understood that, unless otherwise specified herein, both endpoints of each numerical range and any value between the two endpoints may be used. Unless otherwise defined herein, all technical and scientific terms used herein are consistent with the prior art as known to those skilled in the art and described herein. Any prior art methods, devices, and materials similar or equivalent to those described in the examples herein may also be used to implement the present invention.

[0030] Please refer to Figures 1-3. The present application provides a vehicle door ring structure, including a safety column 1 and a tubular beam structure 2; the safety column 1 is provided with a accommodating cavity 11; the tubular beam structure 2 is arranged in the accommodating cavity 11 and is connected to the accommodating cavity 11 through a first connecting area 21 and a second connecting area 22; the first connecting area 21 is a fixed connection; the second connecting area 22 is a flexible material connection.

[0031] It should be noted that the door ring structure, also known as the door ring or safety ring of the car, usually includes structures such as A-pillar, B-pillar, C-pillar or D-pillar, roof and chassis; the safety column 1 is the A-pillar and / or B-pillar and / or C-pillar on the car; the tubular beam structure 2 is a hollow tubular structure, and the equivalent structure of the tubular structure is a solid rod-shaped structure; the cross-sectional area of ​​the tubular beam structure 2 is circular or square or a shape structure similar to the cross-sectional area of ​​the safety column 1; the tubular beam structure 2 has the advantages of light weight but high strength compared with other conventional reinforced structures, especially the tubular beam structure 2 is close to the rod structure of the solid structure in strength and rigidity. Under the same material consumption conditions, the tubular beam structure 2 has higher strength and better bending resistance. The design of the tubular beam structure 2 enables it to disperse the load or force to the entire tube body, thereby reducing the single-point pressure and improving the overall strength; when the tubular beam structure 2 is subjected to bending force, the inside and outside of the tubular beam structure 2 The stress distribution in the part is more uniform, and it is easier to form a stable curved surface. Therefore, the bending resistance of the tube beam structure 2 is better than other structural forms; and because the tube beam structure 2 has excellent distribution consistency, the tube beam structure 2 can disperse the impact force when it is subjected to impact, and can better withstand some sudden impact forces; at the same time, the tube beam structure 2 also has the ability to absorb and disperse energy. When the tube beam structure 2 is subjected to severe impact, the tube beam structure 2 can disperse the vibration more evenly, avoiding or reducing damage to a single point; therefore, the present application provides a tube beam structure 2 at the accommodating cavity 11 of the safety column 1, which can reduce the amount of material used while improving the structural strength, bending resistance, impact resistance, force uniformity and other mechanical properties of the safety column 1 to a certain extent, thereby greatly improving the safety of the door ring structure. As shown in Figure 5, it can avoid or reduce the deformation of the safety column 1 due to collision, thereby improving the deformation resistance of the entire vehicle.

[0032] Furthermore, by using the tubular beam structure 2 to structurally reinforce the safety column 1 of the door ring structure, the problem of insufficient electrophoretic baking of the accommodating cavity 11 of the safety column 1 when using CBS material (a composite reinforcement material of nylon and epoxy resin) to structurally reinforce the safety column 1 of the door ring structure can be avoided or reduced. This is because the CBS material has poor thermal conductivity, which will cause the vehicle body to be insufficiently baked due to the local temperature being too low during the painting and baking process, thereby making it impossible to completely dry the electrophoretic liquid, and thus failing to achieve the desired anti-corrosion performance. Using the tubular beam structure 2 for structural reinforcement can avoid or reduce the occurrence of this problem. At the same time, the cost of CBS material is higher than that of the tubular beam structure 2. Therefore, using the tubular beam structure 2 can further reduce the cost of using the door ring structure.

[0033] Furthermore, in terms of the connection method, the fixed connection has the function of allowing the continuous connection structure of the safety column 1 and the tubular beam structure 2 to distribute the load more smoothly, reduce the pressure on the safety column 1, and increase the overall stability of the safety column 1 and the tubular beam structure 2, reducing the risk of overall structural collapse due to partial structural failure; the fixed connection can make the bending moment and shear force of the structure more evenly distributed, reduce local stress concentration, and effectively prevent fatigue damage; the fixed connection can improve the torsional performance of the door ring structure and prevent the structure from twisting when subjected to torque; and the flexible material connection can cope with the connection between the safety column 1 and the tubular beam structure 2 with large deformation or large dimensional error, and can reduce stress concentration; when the door ring structure is vibrated, the flexible material connection can absorb part of the displacement or vibration of the safety column 1 or the tubular beam structure 2, thereby reducing the impact on the door ring structure; at the same time, the flexible material connection can reduce the overall weight of the door ring structure to a certain extent; therefore, in this case, the safety column 1 is connected to the tubular beam structure 2 in a first connection area 21 by a fixed connection, and the safety column 1 is connected to the tubular beam structure 2 in a second connection area 22 by a flexible material connection, which can improve the flexibility and adaptability of the door ring structure manufacturing, and can absorb and disperse external forces to a certain extent, reduce the problem of structural damage, and is conducive to improving the service life of the entire structure and ensuring structural redundancy. Even if a fixed connection point or a flexible material connection point is damaged, the other parts can still maintain normal connectivity, and the flexible connection can reduce the noise generated when the door ring structure vibrates; at the same time, by using both fixed and flexible material connections to connect the safety column 1 and the tubular beam structure 2, the manufacturing accuracy requirements for the safety column 1 and the tubular beam structure 2 can be reduced when connecting the two, so that the safety column 1 and the tubular beam structure 2 can be connected even if the structural matching degree is low, thereby reducing the manufacturing cost and assembly connection difficulty of the safety column 1 and the tubular beam structure 2, thereby reducing costs.

[0034] Please refer to Figures 4-5. As an optional embodiment of this case, the tubular beam structure 2 and the accommodating cavity 11 are welded through the first connecting area 21.

[0035] It should be noted that the tubular beam structure 2 and the accommodating cavity 11 of the safety column 1 are connected by welding, and the connection strength is high, and it has high tensile, compressive and shear resistance. Compared with the connection methods of bolts and rivets, it can reduce additional connecting parts, and the connection parts occupy a small space, thereby achieving the purpose of streamlining the connection, reducing material costs, and being beneficial to the appearance of the door ring structure.

[0036] Please refer to Figures 4-5. As an optional embodiment of this case, the tubular beam structure 2 and the accommodating cavity 11 are bonded via the second connecting area 22.

[0037] It should be noted that the bonding method can better deal with the problem of structural mismatch between the tubular beam structure 2 and the accommodating cavity 11 of the safety column 1. When the tubular beam structure 2 and the accommodating cavity 11 do not fit together, better bonding can be achieved through bonding, which reduces the manufacturing accuracy requirements of the tubular beam structure 2 and the safety column 1; and the bonding method will not cause stress concentration between the tubular beam structure 2 and the safety column 1 and deformation of the connection. The bonding method also has low requirements for manual operation, which is conducive to reducing labor costs and assembly and connection difficulty.

[0038] Please refer to Figures 4-5. As an optional embodiment of this case, a channel 12 for energy absorption and the entry and exit of electrophoretic liquid is provided between the tubular beam structure 2 and the safety column 1.

[0039] It should be noted that, through the provision of the channel 12, on the one hand, it is convenient for the electrophoretic liquid to fully enter and exit the interior of the door ring structure during electrophoresis of the door ring structure, which is beneficial to improving the corrosion resistance of the door ring structure; at the same time, when the door ring structure is subjected to a large external force, it can absorb energy through the deformation of the channel 12, and in the event of a vehicle collision, it can better alleviate the impact force on the occupants, which is beneficial to the protection of the occupants.

[0040] As an optional embodiment of the present invention, the first connection areas 21 and the second connection areas 22 are alternately arranged.

[0041] It should be noted that, if the first connection area 21 and the second connection area 22 are alternately arranged along the straight line direction, the first connection area 21 and the second connection area 22 can be located on the straight line on the same side or on straight lines on different sides when they are alternately arranged, and the specific arrangement is based on actual needs; by alternating the first connection area 21 and the second connection area 22, the welding and flexible material connection methods are alternately performed, so that the advantages of welding and flexible material connection complement each other, which is beneficial to improving the uniformity of the overall force of the door ring structure, and thus can better improve the stability of the door ring structure, and avoid or reduce the deformation of the door ring structure when it is subjected to force.

[0042] Please refer to FIG. 1 , as an optional embodiment of the present case, the safety column 1 is an A-column; the tubular beam structure 2 is disposed in the accommodating cavity 11 at the easily-bending portion of the A-column.

[0043] It should be noted that the A-pillar of a car is part of the car body structure. The A-pillar is located on both sides of the car's front windshield and is the connecting part between the front windshield and the side windows. The A-pillar provides necessary support and stability for the top and body of the car and is one of the important components of the car body strength. In the event of a car accident, especially in a skidding or rollover accident, the A-pillar plays an important role. It can help maintain the structural integrity of the car roof, prevent the roof from collapsing due to external impact, and protect the safety of the occupants. In the A-pillar, the unreinforced middle area of ​​the A-pillar and the junction with the windshield and the roof are prone to bending and deformation. Therefore, in this case, by providing a tubular beam structure 2 at the easily bent part of the A-pillar, the structural strength of the A-pillar can be better improved, thereby improving the safety of the A-pillar and the entire vehicle.

[0044] Please refer to FIG. 1 , as an optional embodiment of the present case, the end of the tubular beam structure 2 is a closed structure.

[0045] It should be noted that, compared with other reinforcing rib structures, since the ends of the tubular beam structure 2 are closed structures, the stress distribution inside and outside the tubular beam structure 2 will be more balanced, making the tubular beam structure 2 have stronger torsional resistance, and at the same time further enhancing the corrosion resistance inside the tubular beam structure 2.

[0046] Please refer to Figures 4-5. As an optional embodiment of this case, the tubular beam structure 2 is a hot air expansion formed tubular beam.

[0047] It should be noted that the hot air expansion forming process is to seal the ends of the steel tube or aluminum tube, heat the tube body to the required temperature, and then fill the tube body with high-pressure gas to increase the internal pressure of the tube body. The organizational structure of the tube body forms the desired shape after being subjected to force and continuous heating. After cooling, the structural strength of the tubular beam structure 2 can be improved to a certain extent. The hot air expansion forming process can produce complex tubular beam structures 2 with high forming precision, high production efficiency, and stable performance, thereby achieving a good structural match between the tubular beam structure 2 and the inner wall of the accommodating cavity 11 of the safety column 1, facilitating the adaptive installation connection of the tubular beam structure 2 and the safety column 1, and reducing the difficulty of connection. At the same time, the hot air expansion formed tubular beam generally has a tensile strength of at least 1500 MPa, and the maximum tensile strength of the hot air expansion formed tubular beam can reach 2000 MPa. The high strength can greatly improve the deformation resistance of the door ring structure, thereby improving the overall performance of the door ring structure and further improving the safety of the entire vehicle. Of course, other processes such as 3D roll bending, hydraulic expansion, etc. can also be used as alternative solutions for the tubular beam structure 2 if the strength meets the use requirements.

[0048] Please refer to Figures 4-5. As an optional embodiment of this case, the tubular beam structure 2 and the safety column 1 are arc welded in the first connection area 21; the tubular beam structure 2 and the safety column 1 are bonded with structural tape in the second connection area 22.

[0049] It should be noted that arc welding can absorb tolerances within 2 mm, further reducing the difficulty of matching the tubular beam structure 2 and the safety column 1, thereby reducing the manufacturing accuracy of the tubular beam structure 2 and the safety column 1, reducing production costs and reducing assembly difficulty; such as arc welding, which includes manual arc welding, gas shielded arc welding, gas tungsten arc welding and other welding methods; compared with spot welding, which can only weld flat joint surfaces, arc welding can weld complex entire joint surfaces and has a wider range of applications, especially the door ring structure in this case, the surface structure of the tubular beam structure 2 and the surface structure of the accommodating cavity 11 of the safety column 1 are complex, and arc welding can be more secure; at the same time, since the tubular beam structure 2 is a closed ring shape, the tubular beam structure 2 is arranged in the accommodating cavity 11 of the safety column 1, therefore, by using arc welding and laser welding, a unilaterally accessible connection process can be achieved, that is, only a welding hole 13 needs to be opened on the safety column 1 to achieve welding between the tubular beam structure 2 and the safety column 1; there is no need to open holes on the safety column 1 and the tubular beam structure 2 at the same time to meet the welding requirements, such as spot welding, as in other welding processes. , it is necessary to open a through hole that passes through the safety column 1 and the tubular beam structure 2 before welding, and opening a through hole will reduce the structural strength of the weld. Therefore, arc welding or laser welding is selected to reduce the difficulty of welding and improve the welding strength. Structural tape has high bonding strength, can withstand long-term pressure and load, and has good aging resistance, temperature tolerance and chemical corrosion resistance. Structural tape is usually made of one or more high-performance adhesive materials, such as acrylic, epoxy resin, polyurethane, etc.; The middle area of ​​the tubular beam structure 2 and the accommodating cavity 11 of the safety column 1 is not in contact with each other. By adding 2 to 3 mm thick structural tape for bonding, there is no hard connection in the non-welding area, which can absorb the surface tolerance of the parts and ensure the connection strength. Therefore, in this case, the safety column 1 and the tubular beam structure 2 are connected by a fixed connection in the area where they are relatively close, and the gap between the safety column 1 and the tubular beam structure 2 is connected by a flexible material, which can improve the overall connectivity of the door ring structure and reduce the difficulty and cost of connection. As shown in Figure 4-5, the accommodating cavity 11 of the safety column 1 is connected to the hot-expanded tubular beam at the boss by arc welding, and is bonded with structural tape in the non-fitting area; for example, a hot-expanded tubular beam can be added to the reinforcement plate area of ​​the A-pillar for connection.

[0050] Please refer to Figures 1-2. The present application also provides a car, including the door ring structure.

[0051] It should be noted that the car with the door ring structure of this case is protected by this case; the door ring structure of this case includes an integral door ring structure of equal material thickness or a door ring structure of unequal material thickness; it can also be used in non-door ring structure reinforcement plates to improve structural strength. The position and length of the tubular beam structure 2 can be arranged at the position where the safety column transitions sharply and is easy to bend according to the shape of the selected vehicle model. The position and length of the tubular beam structure 2 are not fixed, and different lengths and positions can be selected according to actual conditions.

[0052] In summary, the present application effectively overcomes some practical problems in the prior art and thus has high utilization value and practical significance.

[0053] The above embodiments are merely illustrative of the principles and effects of this application and are not intended to limit this application. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of this application. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical concepts disclosed in this application shall be covered by the claims of this application.

Claims

1. A door ring structure, wherein, Comprising: A safety pillar, on which a receiving cavity is provided; A tube beam structure, disposed in the receiving cavity and connected to the receiving cavity through a first connection area and a second connection area; At the first connection area, it is a fixed connection; at the second connection area, it is connected by a flexible material.

2. The door ring structure according to claim 1, wherein, The tube beam structure is welded to the receiving cavity through the first connection area.

3. The door ring structure according to claim 1, wherein, The tube beam structure is bonded to the receiving cavity through the second connection area.

4. The door ring structure according to claim 1, wherein, A channel for energy absorption and the entry and exit of electrophoresis liquid is provided between the tube beam structure and the safety pillar.

5. The door ring structure according to claim 1, wherein, The first connection area and the second connection area are arranged alternately.

6. The door ring structure according to claim 1, wherein, The safety pillar is an A-pillar; the tube beam structure is disposed in the receiving cavity at the easily bendable part of the A-pillar.

7. The door ring structure according to claim 1, wherein, The end of the tube beam structure is a closed structure.

8. The door ring structure according to claim 1, wherein, The tube beam structure is a hot gas expansion formed tube beam.

9. The door ring structure according to claim 1, wherein, The tube beam structure and the safety pillar are arc welded at the first connection area; the tube beam structure and the safety pillar are bonded with a structural tape at the second connection area.

10. A vehicle, wherein, Comprising the door ring structure according to any one of claims 1-9.

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