Door ring structure and vehicle door structure of commercial vehicle

Abstract

The application discloses a door ring structure and a vehicle door structure of a commercial vehicle, and relates to the technical field of vehicles.The door ring structure comprises a door ring body which is integrally cast in a shape.The front edge and the rear edge of the door ring body are wide at the bottom and narrow at the top.The front lower corner of the door ring body is provided with a transversely-laid lower triangular reinforcing structure in combination with an added structure.The rear upper corner of the door ring body is provided with an upside-down upper triangular reinforcing structure in combination with an added structure.The lower triangular reinforcing structure and the upper triangular reinforcing structure are used for preventing the door ring body from being subjected to diagonal deformation with two opposite corners moving away from each other when the vehicle is subjected to a collision.The application discloses a vehicle door structure which comprises a vehicle door body and the above-mentioned door ring structure.The door ring structure and the vehicle door structure disclosed by the application are light in weight, low in cost, and high in anti-deformation capability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a door ring structure of a commercial vehicle and a vehicle door structure. BACKGROUND

[0002] At present, the existing door ring structure of a commercial vehicle is as shown in the drawing, the door ring structure is divided into multiple sections, in order to improve the overall strength of the door ring structure and improve the anti-collision performance, the main measures taken are to increase the thickness of the internal reinforcing plate or to use a material with better rigidity and strength to improve the strength of the entire door ring structure. Figure 1

[0003] However, the traditional door ring structure greatly increases the weight and cost, and the anti-deformation ability of the door ring structure when subjected to a collision has not been greatly improved. After studying a large number of collision accidents, it is found that the lower left corner of the door ring structure as shown in the drawing is a T-shaped structure 1', the upper right corner is an L-shaped structure 2', the T-shaped structure 1' and the L-shaped structure 2' have poor structural stability, and the front edge of the door ring structure is prone to tilt backward when the vehicle collides, resulting in diagonal deformation of the entire door ring structure. Figure 1 SUMMARY

[0004] In view of the defects in the prior art, the purpose of the present application is to provide a door ring structure of a commercial vehicle and a vehicle door structure, which reduces weight, reduces cost, and has strong anti-deformation ability.

[0005] In order to achieve the above purpose, the technical scheme adopted is: a door ring structure of a commercial vehicle, the door ring structure comprises a door ring main body, the door ring main body is integrally cast into a shape; the front edge and the rear edge of the door ring main body are wide at the bottom and narrow at the top, a horizontally lying lower triangular reinforcing structure is arranged at the front lower corner of the door ring main body in combination with an added structure; an inverted upper triangular reinforcing structure is arranged at the rear upper corner of the door ring main body in combination with an added structure; the lower triangular reinforcing structure and the upper triangular reinforcing structure are used to prevent the door ring main body from undergoing diagonal deformation with two opposite corners moving away from each other when the vehicle collides.

[0006] On the basis of the above technical scheme, the added structure of the lower triangular reinforcing structure comprises a door ring inner reinforcing plate and an inner reinforcing lining plate, the door ring inner reinforcing plate and the inner reinforcing lining plate are both welded to the inner side of the door ring main body plate, and the door ring inner reinforcing plate is close to the front lower corner, and the inner reinforcing lining plate is located in the front lower direction of the door ring inner reinforcing plate.

[0007] On the basis of the above technical scheme, the front lower corner of the door ring main body is provided with a first outer convex reinforcing rib and a second outer convex reinforcing rib, the outer convex height of the second outer convex reinforcing rib is greater than the outer convex height of the first outer convex reinforcing rib; the second outer convex reinforcing rib extends upward, and the first outer convex reinforcing rib is in the shape of an inverted T.

[0008] ​​On the basis of the above technical scheme, the inner reinforcing plate of the door ring is arranged close to the first outer convex reinforcing rib, and a first cavity is formed between the inner reinforcing plate of the door ring and the first outer convex reinforcing rib; the inner side of the inner reinforcing plate of the door ring is arranged close to the first inner cover plate of the door ring, and a second cavity is formed between the inner reinforcing plate of the door ring and the first inner cover plate.

[0009] On the basis of the above technical scheme, the door ring body comprises a door hole, the front edge of the door hole is an A column, the rear edge of the door hole is a B column, the lower edge of the door hole is a door sill, and the upper edge of the door hole is a top frame; the lower triangular reinforcing structure is located at the intersection of the A column and the door sill, and the upper triangular reinforcing structure is located at the intersection of the B column and the top frame.

[0010] The A column and the B column each comprise an upper segment and a lower segment; the lower segment of the A column, the upper segment of the B column and the lower segment of the B column each have a uniform width; the upper segment of the A column gradually decreases in width from bottom to top; and the width of the upper segment of the B column is smaller than the width of the lower segment of the B column.

[0011] On the basis of the above technical scheme, the door ring structure further comprises a force transmission inner lining plate, the force transmission inner lining plate is fixed to the inner side of the top of the lower segment of the A column by means of screws, and forms a force transmission structure; the force transmission inner lining plate further comprises an energy absorption convex, the plate body of the top of the lower segment of the A column of the energy absorption convex forms an energy absorption cavity; the door ring structure further comprises a second inner cover plate and a door lock reinforcing plate, the second inner cover plate is arranged close to the inner side of the top of the lower segment of the B column, and the door lock reinforcing plate is arranged close to the outer side of the top of the second inner cover plate, the door lock reinforcing plate, the second inner cover plate and the plate body of the top of the lower segment of the B column form a force transition structure.

[0012] The application further discloses a vehicle door structure, which comprises a vehicle door body and the above door ring structure, and the vehicle door body can be opened and closed relative to the door ring structure; the door ring structure comprises a door ring body, a force transmission inner lining plate, a second inner cover plate and a door lock reinforcing plate, and the door ring body comprises an A column and a B column.

[0013] The force transmission inner lining plate is fixed to the inner side of the top of the lower segment of the A column by means of screws, and forms a force transmission structure with the plate body of the door ring body itself; the second inner cover plate is arranged close to the inner side of the top of the lower segment of the B column, and the door lock reinforcing plate is arranged close to the outer side of the top of the second inner cover plate, the door lock reinforcing plate, the second inner cover plate and the plate body of the door ring body itself form a force transition structure; the vehicle door body is provided with a vehicle door anti-collision rod, and the two ends of the vehicle door anti-collision rod correspond to the force transmission structure and the force transition structure respectively when the vehicle door is closed.

[0014] On the basis of the above technical scheme, the door structure further comprises a toolbox crossbeam and a door frame front side plate, the door frame front side plate is arranged at the front side of the A column, and the toolbox crossbeam is arranged at the rear side of the B column; the door body is hingedly fixed to the door frame front side plate, and the outer surface of the door lock reinforcing plate is provided with a lock body; when the door body is closed relative to the door ring structure, the lock cylinder of the door body matches the lock body.

[0015] On the basis of the above technical scheme, the added structure of the lower triangular reinforcing structure comprises a door ring inner reinforcing plate and an inner reinforcing lining plate, both of which are welded to the inner side of the door ring main plate body, and the door ring inner reinforcing plate is close to the front lower corner, and the inner reinforcing lining plate is located in the front lower direction of the door ring inner reinforcing plate.

[0016] The front lower corner of the door ring main body is provided with a first outwardly convex reinforcing rib and a second outwardly convex reinforcing rib, the outwardly convex height of the second outwardly convex reinforcing rib is greater than that of the first outwardly convex reinforcing rib, the second outwardly convex reinforcing rib extends upward, and the first outwardly convex reinforcing rib is in an inverted T shape.

[0017] The door ring inner reinforcing plate is arranged close to the first outwardly convex reinforcing rib, and a first cavity is formed between the door ring inner reinforcing plate and the first outwardly convex reinforcing rib, and a door ring first inner cover plate is arranged close to the inner side of the door ring inner reinforcing plate, and a second cavity is formed between the door ring inner reinforcing plate and the first inner cover plate.

[0018] On the basis of the above technical scheme, the door ring main body comprises a door opening, the A column is located at the front edge of the door opening, and the B column is located at the rear edge of the door opening; the lower edge of the door opening is a door sill, and the upper edge of the door opening is a top edge frame.

[0019] The lower triangular reinforcing structure is located at the intersection of the A column and the door sill, and the upper triangular reinforcing structure is located at the intersection of the B column and the top edge frame; the A column and the B column each comprise two sections, the lower section of the A column, the upper section of the B column and the lower section of the B column each have a uniform width, the upper section of the A column gradually decreases in width from bottom to top, and the width of the upper section of the B column is less than that of the lower section of the B column.

[0020] The technical scheme provided by the present application has the following beneficial effects:

[0021] 1. The door ring structure of the present application is based on the research results of a large number of collision accidents, that is, the traditional split type door ring structure is prone to collision diagonal deformation, which breaks through the conventional limited thinking and redesigns the entire door ring structure. The door ring structure mainly adopts three measures, the first measure is that the door ring main body is integrally cast, which reduces the strength defects of the connection parts of the split type door ring structure, solves the problem of stress concentration, and the entire door ring structure has good rigidity and integrity and strong anti-deformation ability.

[0022] The second measure is that the front edge and the rear edge of the door ring body are wide at the bottom and narrow at the top, and the width of the four edges of the traditional door ring structure is basically consistent. The integrally formed door ring body of the application lays a strength foundation, so the width of the four edges is narrowed on the basis of meeting the crash performance, and the door ring structure is further optimized, and the door ring structure is optimized in terms of cost and weight.

[0023] The third measure is that, for the weakest position of the crash performance, a horizontal lying lower triangular reinforcing structure is formed at the front lower corner of the door ring body, and an inverted upper triangular reinforcing structure is arranged at the rear upper corner of the door ring body; the lower triangular reinforcing structure and the upper triangular reinforcing structure can prevent the door ring body from being deformed in a diagonal direction away from the two corners when the vehicle collides. After adopting the third measure, only the two front lower corners and the rear upper corner are reinforced with high pertinence, and compared with the traditional split type door ring structure, almost all the internal reinforcing plates of the door ring structure are reinforced, which greatly saves the processing time.

[0024] 2. The door ring structure of the application enhances the structural strength of the lower triangular reinforcing structure by additionally arranging a door ring inner reinforcing plate and an inner reinforcing lining plate on the inner surface of the integrally formed door ring body plate, the additional structure of the door ring structure of the application is highly pertinent, compared with the traditional split type door ring structure which increases reinforcing plates everywhere, the door ring structure is extremely optimized in design, and the performance-cost ratio is greatly improved. The door ring structure of the application sets the door ring body plate into a stepped first outer convex reinforcing rib and a second outer convex reinforcing rib at the lower triangular reinforcing structure, thereby enhancing the structural strength of the lower triangular reinforcing structure by the integrally formed door ring body itself, and the design is stable and reliable.

[0025] 3. In the lower triangular reinforcing structure of the door ring structure of the application, a first cavity is formed between the door ring inner reinforcing plate and the first outer convex reinforcing rib, and a second cavity is formed between the door ring inner reinforcing plate and the first inner cover plate, the two cavity structures not only can collapse and absorb energy when colliding, but also the three-layer structure of the first outer convex reinforcing rib, the door ring inner reinforcing plate and the first inner cover plate is connected stably, which can prevent the front edge of the door ring body, i.e. the A-pillar, from falling backward when a collision accident occurs, and further improves the crash performance.

[0026] 4. The vehicle door structure of the application comprises a vehicle door body and the above-mentioned door ring structure, the vehicle door body can be opened and closed relative to the door ring structure, a force transmission lining plate is fixed to the top inner side of the lower segment of the A-pillar by screws, and forms a force transmission structure with the plate body of the door ring body itself; a second inner cover plate is tightly arranged on the top inner side of the lower segment of the B-pillar, a door lock reinforcing plate is tightly arranged on the top outer side of the second inner cover plate, and the door lock reinforcing plate, the second inner cover plate and the plate body of the door ring body form a force transition structure; the vehicle door body is provided with a vehicle door anti-collision rod, and when the vehicle door is closed, the two ends of the vehicle door anti-collision rod correspond to the force transmission structure and the force transition structure respectively.

[0027] The door structure of this application is ingeniously designed, achieving the optimal configuration of the door ring structure. Furthermore, force transmission and force transition structures are set on both sides of the door anti-collision bar to further enhance collision performance and strengthen deformation resistance. In the event of a collision, the collision force of the force transmission structure of the A-pillar is transmitted to the force transition structure of the B-pillar through the door anti-collision bar, and then transmitted to the rear of the driver's cab through the force transition structure, ensuring the survival space between the A-pillar and the B-pillar. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 A schematic diagram of a conventional split-type door ring structure provided in the embodiments of this application;

[0030] Figure 2 A schematic diagram of the door opening and four sides of the door ring structure provided in the embodiments of this application;

[0031] Figure 3 Schematic diagrams of multiple reinforcing structures of the door ring structure provided in the embodiments of this application;

[0032] Figure 4 This is a schematic diagram of the inner structure of the lower triangular reinforcing structure provided in the embodiments of this application;

[0033] Figure 5 This is a schematic diagram of the outer structure of the lower triangular reinforcing structure provided in the embodiments of this application;

[0034] Figure 6 for Figure 5 AA section view;

[0035] Figure 7 This is a schematic diagram of the inner side of the force transmission structure provided in the embodiments of this application;

[0036] Reference numerals: 1', T-shaped structure; 2', L-shaped structure; 100, door ring body; 101, A-pillar; 102, B-pillar; 103, door sill; 104, top frame; 105, door opening; 1, lower triangular reinforcement structure; 2, upper triangular reinforcement structure; 3, force transmission structure; 4, force transition structure; 5, door anti-collision bar; 11, inner reinforcement plate of door ring; 12, inner reinforcement liner; 13, first outward protruding reinforcement rib; 14, second outward protruding reinforcement rib; 15, first inner cover plate; 16, first cavity; 17, second cavity; 31, force transmission inner liner; 311, energy-absorbing protrusion. Detailed Implementation

[0037] In order to make the purposes, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not used to limit the present application. In addition, the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0038] As shown in Figures 2 to 7 The present application discloses an embodiment of a door ring structure of a commercial vehicle, which comprises a door ring body 100 integrally cast into shape. The conventional split door ring structure is prone to stress concentration at the disconnected position. When a collision occurs, the position of stress concentration is the weak point of collapse deformation and the weak point of anti-collision. The door ring structure of the present application is integrally formed, which reduces the strength defects of the connecting part of the split door ring structure, solves the problem of stress concentration, and has good rigidity and strong anti-deformation ability.

[0039] The front edge and the rear edge of the door ring body 100 are both wide at the bottom and narrow at the top. The structure of wide at the bottom and narrow at the top breaks the traditional structure of four square square structure, and compared with the conventional door ring structure with basically consistent four edge width, the present application adopts the structure of wide at the bottom and narrow at the top under the premise of meeting the anti-collision performance, which achieves the best door ring structure form, not only meets the lightweight requirement, but also saves the material cost.

[0040] The front lower corner of the door ring body 100 combines with the added structure to form a horizontal lying lower triangular reinforcing structure 1, i.e. the lower triangular reinforcing structure 1 comprises a door ring body plate and an added structure, and the lower triangular reinforcing structure 1 itself is more stable.

[0041] The rear upper corner of the door ring body 100 combines with the added structure to set an inverted upper triangular reinforcing structure 2; i.e. the upper triangular reinforcing structure 2 is composed of the plate of the door ring body 100 and the added structure, and the upper triangular reinforcing structure 2 itself is more stable.

[0042] The lower triangular reinforcing structure 1 and the upper triangular reinforcing structure 2 are used to prevent the door ring body 100 from diagonal deformation when the vehicle collides, mainly the diagonal deformation of the lower triangular reinforcing structure 1 and the upper triangular reinforcing structure 2 away from each other, i.e. the deformation from a rectangular door to a parallelogram.

[0043] The door ring structure of the present application is based on the research results of a large number of collision accidents, that is, the traditional split type door ring structure is prone to diagonal deformation in collision, and breaks through the conventional limited thinking to re-plan and design the entire door ring structure. The door ring structure mainly adopts three measures, the first measure is that the door ring body 100 is integrally cast into shape, which reduces the strength defects of the connection parts of the split type door ring structure, solves the problem of stress concentration, and the entire door ring structure has good rigidity and integrity and strong anti-deformation ability.

[0044] The second measure is that the front and rear edges of the door ring body 100 are wide at the bottom and narrow at the top, and the four edges of the traditional door ring structure are basically consistent in width. The integrally formed door ring body 100 of the present application lays a strength foundation, so the four edges are narrowed on the basis of meeting the crash performance, further optimizing the door ring structure, and achieving optimization of the door ring structure from the aspects of cost and weight.

[0045] The third measure is that, for the weakest position in terms of crash performance, a horizontal lying lower triangular reinforcing structure 1 is formed at the front lower corner of the door ring body 100, and an inverted upper triangular reinforcing structure 2 is arranged at the rear upper corner of the door ring body 100; the lower triangular reinforcing structure 1 and the upper triangular reinforcing structure 2 can prevent the door ring body 100 from diagonal deformation in which two opposite corners move away from each other when the vehicle collides. After adopting the third measure, only the two front lower corners and the rear upper corner are reinforced with high specificity, and compared with the traditional split type door ring structure, almost all internal reinforcing plates of the door ring structure are reinforced, greatly saving the processing time.

[0046] It is worth noting that the door ring structure has existed for many years, and the skilled person in the art basically does not consider designing and processing the door ring structure integrally, mainly because the mold is too large and the development cost is high. The skilled person in the art always focuses on saving the development cost of the mold, and denies the integrally processed door ring structure.

[0047] However, breaking the conventional thinking and starting from the overall cost performance, the door ring structure is adopted, and after actually processing, producing and assembling the door ring structure of the present application, it is found that the door ring structure of the present application not only improves the crash performance, but also only increases a little in cost, mainly because ① the door ring structure itself saves a large amount of material and the width is relatively narrowed, saving the cost; ② a large number of internal reinforcing plates are saved, saving a large amount of cost; ③ the door ring structure is convenient to assemble and install, saving a large amount of assembly cost. In summary, the cost of the door ring structure of the present application is increased, which is not too much compared with the cost of mold development.

[0048] For example, Figure 4As shown, in one embodiment, the added structure of the lower triangular reinforcement structure 1 includes the inner reinforcement plate 11 and the inner reinforcement lining plate 12. Specifically, the lower triangular reinforcement structure 1 includes the door ring main body plate, the inner reinforcement plate 11 and the inner reinforcement lining plate 12. The inner reinforcement plate 11 and the inner reinforcement lining plate 12 are both welded to the inner side of the door ring main body plate, and the inner reinforcement plate 11 is close to the front lower corner of the door ring main body 100, adjacent to the door opening 105. The inner reinforcement lining plate 12 is located in the front lower direction of the inner reinforcement plate 11.

[0049] Preferably, the inner reinforcement lining plate 12 includes six mounting holes, of which the two forward mounting holes are used to fix the door stopper, and the four rear mounting holes are used to fix the hinge reinforcement plate.

[0050] The door ring structure of the present application enhances the structural strength of the lower triangular reinforcement structure 1 by adding the inner reinforcement plate 11 and the inner reinforcement lining plate 12 to the inner surface of the integrally formed door ring main body plate. The added structure of the door ring structure of the present application is highly targeted, and compared with the traditional split door ring structure which adds reinforcement plates everywhere, the door ring structure is extremely optimized in design, greatly improving the performance-price ratio.

[0051] As shown, Figure 5 In one embodiment, the front lower corner of the door ring main body 100 is provided with the first outer convex reinforcement rib 13 and the second outer convex reinforcement rib 14. Specifically, the plate shape of the door ring main body itself is provided in the form of the first outer convex reinforcement rib 13 and the second outer convex reinforcement rib 14, and the outer convex height of the second outer convex reinforcement rib 14 is greater than that of the first outer convex reinforcement rib 13. The second outer convex reinforcement rib 14 extends upward, and the first outer convex reinforcement rib 13 is in the shape of an inverted T. The door ring main body 100 of the present application is also provided with various stepped transitions and the like at other places, fully utilizing the door ring main body itself to achieve optimal design in strength.

[0052] The door ring structure of the present application provides the door ring main body plate with the stepped first outer convex reinforcement rib 13 and the second outer convex reinforcement rib 14 at the lower triangular reinforcement structure 1, thereby enhancing the structural strength of the lower triangular reinforcement structure 1 through the integrally formed door ring main body itself, and achieving stable and reliable design.

[0053] Further, as shown, Figure 6 The inner reinforcement plate 11 is closely arranged on the first outer convex reinforcement rib 13, and a first cavity 16 is formed between the inner reinforcement plate 11 and the first outer convex reinforcement rib 13. The inner side of the inner reinforcement plate 11 is closely arranged with the first inner cover plate 15 of the door ring, and a second cavity 17 is formed between the inner reinforcement plate 11 and the first inner cover plate 15.

[0054] The first cavity 16 is formed between the lower triangular reinforcing structure 1, the inner reinforcing plate 11 of the door ring, and the first outer convex reinforcing rib 13, and the second cavity 17 is formed between the inner reinforcing plate 11 of the door ring and the first inner cover plate 15. The two cavity structures not only can collapse and absorb energy when colliding, but also the three-layer structure of the first outer convex reinforcing rib 13, the inner reinforcing plate 11 of the door ring, and the first inner cover plate 15 is connected stably, which can prevent the front edge of the door ring body 100, i.e., the A-pillar, from falling backward when a collision accident occurs, and further improve the crash performance.

[0055] As shown in Figure 2 , specifically, the middle of the door ring body 100 contains a door opening 105, the front edge of the door opening 105 is an A-pillar 101, the rear edge of the door opening 105 is a B-pillar 102, the lower edge of the door opening 105 is a door sill 103, and the upper edge of the door opening 105 is a top edge frame 104. The A-pillar 101 and the B-pillar 102 are vertically arranged, and the door sill 103 and the top edge frame 104 are horizontally arranged.

[0056] The lower triangular reinforcing structure 1 is located at the intersection of the A-pillar 101 and the door sill 103. The upper triangular reinforcing structure 2 is located at the intersection of the B-pillar 102 and the top edge frame 104.

[0057] The A-pillar 101 and the B-pillar 102 each contain two sections, the lower section of the A-pillar 101, the upper section of the B-pillar 102, and the lower section of the B-pillar 102 are uniform in width, the upper section of the A-pillar 101 gradually decreases from bottom to top, and the width of the upper section of the B-pillar 102 is smaller than the width of the lower section of the B-pillar 102. The width of the lower section of the B-pillar 102 is greater than the width of the lower section of the A-pillar 101.

[0058] The door ring structure of the present application is integrally cast to form a solid foundation, and on the basis of meeting the crash performance, personalized design is carried out, wide points are designed in places with large stress, narrow points are designed in places with small stress, and the narrow points are processed to be narrow, which not only realizes lightweight, but also reduces the manufacturing cost, achieves the purpose of optimal structure, and is more accurate and cost-effective compared with the traditional general design of split structure.

[0059] Specifically, the rear upper corner of the door ring body 100 is provided with a demolding opening, which facilitates demolding after integrally casting.

[0060] In one embodiment, the door ring structure further comprises a force transmission inner lining plate 31, which is fixed to the top inner side of the lower section of the A-pillar by screws and forms a force transmission structure 3. The force transmission inner lining plate 31 further comprises an energy-absorbing convex bump 311, and the A-pillar lower section top plate body of the energy-absorbing convex bump 311 forms an energy-absorbing cavity.

[0061] The door ring structure further comprises a second inner cover plate and a door lock reinforcing plate. The second inner cover plate is arranged in close contact with the top inner side of the lower section of the B pillar, and the door lock reinforcing plate is arranged in close contact with the top outer side of the second inner cover plate. The door lock reinforcing plate, the second inner cover plate and the top plate body of the lower section of the B pillar form a force transition structure 4. The door lock reinforcing plate is used for mounting a door lock.

[0062] The door ring structure of the present application strengthens the strength of the force transmission structure 3 by using the force transmission inner lining plate 31, and strengthens the strength of the force transition structure 4 by using the second inner cover plate and the door lock reinforcing plate, thereby further enhancing the crash performance.

[0063] Specifically, a hinge reinforcing plate is arranged at the front upper corner of the door ring body 100, and is used for connecting a structure component of the side wall located in front of the door opening.

[0064] The present application further discloses an embodiment of a vehicle door structure. The vehicle door structure comprises a vehicle door body and the above-mentioned door ring structure. The vehicle door body can be opened and closed relative to the door ring structure. The door ring structure comprises a door ring body 100, a force transmission inner lining plate 31, a second inner cover plate and a door lock reinforcing plate. The door ring body 100 is integrally formed, and the other structures are mounted at specific positions of the door ring body 100 to strengthen the structural strength of specific areas.

[0065] The door ring body 100 comprises an A pillar 101 and a B pillar 102. The force transmission inner lining plate 31 is fixed to the top inner side of the lower section of the A pillar by screws, and forms a force transmission structure 3 together with the plate body of the door ring body itself. The second inner cover plate is arranged in close contact with the top inner side of the lower section of the B pillar, and the door lock reinforcing plate is arranged in close contact with the top outer side of the second inner cover plate. The door lock reinforcing plate, the second inner cover plate and the plate body of the door ring body itself form a force transition structure 4.

[0066] The vehicle door body is provided with a vehicle door anti-collision rod 5. When the vehicle door is closed, the two ends of the vehicle door anti-collision rod 5 correspond to the force transmission structure 3 and the force transition structure 4 respectively.

[0067] The vehicle door structure of the present application is ingeniously designed, optimally configures the door ring structure, and further arranges the force transmission structure 3 and the force transition structure 4 on the two sides of the vehicle door anti-collision rod 5, thereby further enhancing the crash performance and the anti-deformation ability.

[0068] In one embodiment, the vehicle door structure further comprises a tool box cross beam and a door frame front side plate. The door frame front side plate is arranged at the front side of the A pillar 101, and the tool box cross beam is arranged at the rear side of the B pillar 102. The vehicle door body is hingedly fixed to the door frame front side plate, and the outer surface of the door lock reinforcing plate is provided with a lock body. When the vehicle door body is closed relative to the door ring structure, the lock cylinder of the vehicle door body matches the lock body. The vehicle door body can be opened and closed, and the opening and closing related structures are strengthened, thereby having strong anti-collision ability.

[0069] Regarding the vehicle door structure, as Figure 4As shown, in one embodiment, the added structure of the lower triangular reinforcement structure 1 includes the inner reinforcement plate 11 and the inner reinforcement lining plate 12. Specifically, the lower triangular reinforcement structure 1 includes the door ring main body plate body, the inner reinforcement plate 11 and the inner reinforcement lining plate 12. The inner reinforcement plate 11 and the inner reinforcement lining plate 12 are both welded to the inner side of the door ring main body plate body, and the inner reinforcement plate 11 is close to the front lower corner of the door ring main body 100, adjacent to the door opening 105. The inner reinforcement lining plate 12 is located in the front lower direction of the inner reinforcement plate 11.

[0070] Preferably, the inner reinforcement lining plate 12 includes six mounting holes, of which the two forward mounting holes are used to fix the door stopper, and the four rear mounting holes are used to fix the hinge reinforcement plate.

[0071] The door structure of the present application enhances the structural strength of the lower triangular reinforcement structure 1 by adding the inner reinforcement plate 11 and the inner reinforcement lining plate 12 to the inner surface of the integrally formed door ring main body plate body. The added structure of the door ring structure of the present application is highly targeted, and greatly improves the performance-price ratio compared to the traditional split door ring structure which increases reinforcement plates everywhere.

[0072] Regarding the door structure, as Figure 5 As shown, in one embodiment, the front lower corner of the door ring main body 100 is provided with the first outer convex reinforcement rib 13 and the second outer convex reinforcement rib 14. Specifically, the plate body shape of the door ring main body itself is provided in the structural form of the first outer convex reinforcement rib 13 and the second outer convex reinforcement rib 14, and the outer convex height of the second outer convex reinforcement rib 14 is greater than that of the first outer convex reinforcement rib 13. The second outer convex reinforcement rib 14 extends upward, and the first outer convex reinforcement rib 13 is in the shape of an inverted T. The door ring main body 100 of the present application is also provided with various stepped transitions and the like structures elsewhere, fully utilizing the door ring main body itself to achieve optimal design of strength.

[0073] The door ring structure of the present application sets the door ring main body plate body to the stepped first outer convex reinforcement rib 13 and the second outer convex reinforcement rib 14 at the lower triangular reinforcement structure 1, thereby enhancing the structural strength of the lower triangular reinforcement structure 1 through the integrally formed door ring main body itself, and achieving stable and reliable design.

[0074] Regarding the door structure, further, as Figure 6 As shown, the inner reinforcement plate 11 is closely arranged on the first outer convex reinforcement rib 13, and a first cavity 16 is formed between the inner reinforcement plate 11 and the first outer convex reinforcement rib 13. The inner side of the inner reinforcement plate 11 is closely arranged with the first inner cover plate 15, and a second cavity 17 is formed between the inner reinforcement plate 11 and the first inner cover plate 15.

[0075] The first cavity 16 is formed between the lower triangular reinforcing structure 1, the inner reinforcing plate 11 of the door ring and the first outer convex reinforcing rib 13, and the second cavity 17 is formed between the inner reinforcing plate 11 of the door ring and the first inner cover plate 15. The two cavity structures can not only collapse and absorb energy during a collision, but also the three-layer structure of the first outer convex reinforcing rib 13, the inner reinforcing plate 11 of the door ring and the first inner cover plate 15 is connected stably, which can prevent the front edge of the door ring body 100, i.e. the A-pillar, from falling backward in a collision accident, and further improve the crash performance.

[0076] Regarding the door structure, the middle of the door ring body 100 contains a door opening 105, the A-pillar 101 is located at the front edge of the door opening 105, and the B-pillar 102 is located at the rear edge of the door opening 105; the lower edge of the door opening 105 is the rocker 103, and the upper edge of the door opening 105 is the top frame 104.

[0077] The lower triangular reinforcing structure 1 is located at the intersection of the A-pillar 101 and the rocker 103, and the upper triangular reinforcing structure 2 is located at the intersection of the B-pillar 102 and the top frame 104; both the A-pillar 101 and the B-pillar 102 include upper and lower sections, the lower section of the A-pillar 101, the upper section of the B-pillar 102 and the lower section of the B-pillar 102 have uniform widths, the upper section of the A-pillar 101 gradually decreases from bottom to top, and the width of the upper section of the B-pillar 102 is smaller than the width of the lower section of the B-pillar 102.

[0078] The door structure of the present application, the door ring body 100 of the door ring structure is integrally cast to form a solid foundation, and on the basis of meeting the crash performance, personalized design is carried out, wide points are designed in places with large stress, narrow points are designed in places with small stress, and the narrow points are processed to be narrow, which not only realizes lightweight, but also reduces the manufacturing cost, achieves the purpose of optimal structure, and is more accurate and cost-effective compared with the traditional general design of the split structure.

[0079] In the description of the present application, it should be noted that the positions or position relationships indicated by the terms "upper", "lower" and the like are based on the positions or position relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise expressly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through an intermediate medium; it can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0080] It should be noted that, in the present application, the relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another, without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0081] The foregoing is considered as illustrative only of the principles of the application. Numerous modifications and changes will readily occur to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Therefore, the application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A door ring structure for a commercial vehicle, characterized in that: The door ring structure includes a door ring body (100), which is integrally cast. The front and rear sides of the door ring body (100) are wider at the bottom and narrower at the top. The lower front corner of the door ring body (100) is combined with an additional structure to form a horizontally lying lower triangular reinforcing structure (1). The upper rear corner of the door ring body (100) is combined with an additional structure to form an inverted upper triangular reinforcing structure (2). The lower triangular reinforcing structure (1) and the upper triangular reinforcing structure (2) are used to prevent the door ring body (100) from undergoing diagonal deformation with two opposite corners moving away from each other when a vehicle collision occurs. The added structure of the lower triangular reinforcing structure (1) includes an inner reinforcing plate (11) and an inner reinforcing liner (12) of the door ring. The inner reinforcing plate (11) and the inner reinforcing liner (12) of the door ring are both welded to the inner side of the main body of the door ring. The inner reinforcing plate (11) of the door ring is close to the front lower corner, and the inner reinforcing liner (12) is located in the front lower direction of the inner reinforcing plate (11) of the door ring. The front lower corner of the door ring body (100) is provided with a first outwardly protruding reinforcing rib (13) and a second outwardly protruding reinforcing rib (14). The outward protrusion height of the second outwardly protruding reinforcing rib (14) is greater than the outward protrusion height of the first outwardly protruding reinforcing rib (13). The second outwardly protruding reinforcing rib (14) extends upward, and the first outwardly protruding reinforcing rib (13) forms an inverted T shape.

2. The door ring structure for a commercial vehicle as described in claim 1, characterized in that: The inner reinforcing plate (11) of the door ring is closely attached to the first outward reinforcing rib (13), and a first cavity (16) is formed between the inner reinforcing plate (11) and the first outward reinforcing rib (13). The inner side of the inner reinforcing plate (11) of the door ring is closely attached to the first inner cover plate (15), and a second cavity (17) is formed between the inner reinforcing plate (11) and the first inner cover plate (15).

3. The door ring structure for a commercial vehicle as described in claim 1, characterized in that: The door ring body (100) includes a door opening (105) in the middle. The front edge of the door opening (105) is a pillar A (101), the rear edge of the door opening (105) is a pillar B (102), the lower edge of the door opening (105) is a threshold (103), and the upper edge of the door opening (105) is a top frame (104). The lower triangular reinforcing structure (1) is located at the intersection of pillar A (101) and threshold (103), and the upper triangular reinforcing structure (2) is located at the intersection of pillar B (102) and top frame (104). Both the A-pillar (101) and the B-pillar (102) consist of upper and lower sections. The lower section of the A-pillar (101), the upper section of the B-pillar (102), and the lower section of the B-pillar (102) have uniform widths. The upper section of the A-pillar (101) gradually decreases in size from bottom to top. The upper section of the B-pillar (102) has a width smaller than the lower section of the B-pillar (102).

4. The door ring structure for a commercial vehicle as described in claim 3, characterized in that: The door ring structure also includes a force transmission inner liner (31), which is fixed to the top inner side of the lower section of the A-pillar by screws and forms a force transmission structure (3); the force transmission inner liner (31) also includes an energy-absorbing protrusion (311), and the plate body at the top of the lower section of the A-pillar of the energy-absorbing protrusion (311) forms an energy-absorbing cavity. The door ring structure also includes a second inner cover plate and a door lock reinforcing plate. The second inner cover plate is closely attached to the top inner side of the lower section of the B-pillar (102), and the door lock reinforcing plate is closely attached to the top outer side of the second inner cover plate. The door lock reinforcing plate, the second inner cover plate and the top plate of the lower section of the B-pillar form a force transition structure (4).

5. A door structure, characterized in that: The door structure includes a door body and a door ring structure as described in claim 1. The door body can be opened and closed relative to the door ring structure. The door ring structure includes a door ring body (100), a force transmission inner liner (31), a second inner cover plate, and a door lock reinforcing plate. The door ring body (100) includes an A-pillar (101) and a B-pillar (102). The force transmission inner liner (31) is fixed to the top inner side of the lower section of the A-pillar by screws, and forms a force transmission structure (3) with the door ring body itself; the second inner cover is closely attached to the top inner side of the lower section of the B-pillar, and the door lock reinforcing plate is closely attached to the top outer side of the second inner cover. The door lock reinforcing plate, the second inner cover and the door ring body itself form a force transition structure (4); the door body is provided with a door anti-collision bar (5). When the door is closed, the two ends of the door anti-collision bar (5) correspond to the force transmission structure (3) and the force transition structure (4) respectively.

6. A door structure as described in claim 5, characterized in that: The door structure also includes a toolbox beam and a front panel of the door frame. The front panel of the door frame is located on the front side of the A-pillar (101), and the toolbox beam is located on the rear side of the B-pillar (102). The door body is hinged and fixed to the front side panel of the door frame, and the lock body is provided on the outer surface of the door lock reinforcing plate; when the door body is closed relative to the door ring structure, the lock cylinder of the door body matches the lock body.

7. A door structure as described in claim 5, characterized in that: The inner reinforcing plate (11) of the door ring is closely attached to the first outward reinforcing rib (13), and a first cavity (16) is formed between the inner reinforcing plate (11) and the first outward reinforcing rib (13). The inner side of the inner reinforcing plate (11) of the door ring is closely attached to the first inner cover plate (15), and a second cavity (17) is formed between the inner reinforcing plate (11) and the first inner cover plate (15).

8. A door structure as described in claim 5, characterized in that: The door ring body (100) contains a door opening (105) in the middle. The A-pillar (101) is located at the front edge of the door opening (105), and the B-pillar (102) is located at the rear edge of the door opening (105). The lower edge of the door opening (105) is a threshold (103), and the upper edge of the door opening (105) is a top frame (104). The lower triangular reinforcing structure (1) is located at the intersection of the A-pillar (101) and the threshold (103), and the upper triangular reinforcing structure (2) is located at the intersection of the B-pillar (102) and the top frame (104). The A-pillar (101) and the B-pillar (102) each contain two segments, upper and lower. The lower segment of the A-pillar (101), the upper segment of the B-pillar (102) and the lower segment of the B-pillar (102) have uniform widths. The upper segment of the A-pillar (101) gradually decreases in size from bottom to top. The upper segment of the B-pillar (102) has a width smaller than the lower segment of the B-pillar (102).

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