Reinforcing connecting plate structure of automobile side-by-side back door lock

Abstract

The utility model discloses an automobile side-by-side back door lock reinforcing connecting plate structure which comprises a back door inner plate and a back door outer plate, the end portion of the back door inner plate is fixedly connected with the end portion of the back door outer plate, a lock catch connecting plate is arranged between the back door inner plate and the back door outer plate, and a lock catch reinforcing plate is arranged between the back door inner plate and the lock catch connecting plate. A cavity is formed between the lock catch reinforcing plate and the back door inner plate, and the automobile side-by-side back door lock reinforcing connecting plate structure has the advantages of being reliable in bearing capacity, not prone to deformation and convenient to assemble.

Description

Technical Field

[0001] The utility model belongs to the field of automobile tailgates, and in particular relates to a reinforced connecting plate structure of a car split tailgate lock. Background Art

[0002] Because closing a car's tailgate generates significant impact force at the tailgate latch mounting point, the tailgate latch mounting structure has always been a key research focus during vehicle body development. Traditional tailgate latch mounting structures utilize spot welding of the tailgate inner panel and latch reinforcement plate, with the tailgate outer panel and the tailgate outer panel reinforcement plate connected to strengthen the local structure. This structure limited the tailgate latch mounting point's load-bearing capacity and resulted in relatively large displacement at the tailgate inner panel latch mounting point. This structure was primarily used in vehicles with low rigidity and strength requirements. However, with the development of the automotive industry, the demand for lightweight vehicles has become increasingly stringent, and this has led to higher rigidity and strength requirements for the tailgate latch mounting structure.

[0003] Patent publication number CN105257123A, published on January 20, 2016, discloses a vehicle tailgate latch mounting structure comprising a sill located at the rear section of the vehicle's rear floor and a tailgate latch reinforcement member tightly attached to the lower end of the sill. A hatchback latch positioning hole is located in the center of the sill, which aligns the hatchback latch. The hole extends through the tailgate latch reinforcement member and a tailgate latch nut plate positioned at the lower end of the reargate latch reinforcement member. Furthermore, the sill has two side-by-side lower door lock pin positioning holes on either side of the hatchback latch positioning hole, which align the lower door lock pin. The holes extend through the tailgate latch reinforcement member and a tailgate latch nut plate positioned at the lower end of the reargate latch reinforcement member. This vehicle tailgate latch mounting structure fails to improve the load-bearing capacity of the tailgate latch mounting structure. Utility Model Content

[0004] The purpose of the utility model is to address the deficiencies of the prior art and to provide a reinforced connecting plate structure for a car split-back door lock which has reliable bearing capacity, is not easily deformed, and is easy to assemble.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] The automobile tailgate lock reinforcement connecting plate structure includes a tailgate inner plate and a tailgate outer plate, the ends of the tailgate inner plate and the tailgate outer plate are fixedly connected, a lock connecting plate is provided between the tailgate inner plate and the tailgate outer plate, a lock reinforcement plate is provided between the tailgate inner plate and the lock connecting plate, and a cavity is provided between the lock reinforcement plate and the tailgate inner plate.

[0007] The end of the back door outer panel is provided with an edge, and the end of the back door inner panel extends into the edge and is fixedly connected.

[0008] The cavity is located at the bending position of the lock reinforcement plate and the back door inner plate.

[0009] The two ends of the lock connecting plate are respectively fixedly connected to the back door inner plate and the lock reinforcing plate.

[0010] The lock connecting plate and the lock reinforcing plate are both fixedly connected to the inner side of the back door inner plate.

[0011] A nut plate is provided between the lock connecting plate and the lock reinforcing plate.

[0012] The back door inner plate, the lock connecting plate and the lock reinforcing plate are all fixed by welding.

[0013] The technical effect of the present invention is: the automobile split tailgate lock reinforcement connecting plate structure of the present invention is adopted, by arranging a lock connecting plate and a lock reinforcement plate inside the tailgate structure, and forming a cavity structure with the lock reinforcement plate and the tailgate inner plate, forming effective support for the tailgate lock installation vertical surface in the Y direction, thereby achieving the effect of transmitting the impact force generated by closing the tailgate to the entire tailgate inner plate, enhancing the load-bearing capacity, and ensuring reliable strength and stiffness, meeting the stiffness and strength requirements of a lightweight vehicle body; it also has the advantages of simple structure, reasonable design, good durability, and easy assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] This manual includes the following drawings, which show the following contents:

[0015] Figure 1 This is a structural cross-sectional view of the reinforced connecting plate structure of the automobile split-back door lock of the present invention;

[0016] Figure 2 This is a schematic diagram of the back door inner panel assembly structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the back door sheet metal welding assembly structure of the utility model.

[0018] The markings in the figure are: 1. Back door inner panel; 2. Back door outer panel; 3. Lock connecting plate; 4. Lock reinforcement plate; 5. Nut plate; 6. Cavity; 7. Edging. DETAILED DESCRIPTION

[0019] The following is a further detailed description of the specific implementation methods of the present invention by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention and to facilitate their implementation.

[0020] The automobile tailgate lock reinforcement connecting plate structure includes a tailgate inner panel 1 and a tailgate outer panel 2, the ends of the tailgate inner panel 1 and the tailgate outer panel 2 are fixedly connected, a lock connecting plate 3 is provided between the tailgate inner panel 1 and the tailgate outer panel 2, a lock reinforcement plate 4 is provided between the tailgate inner panel 1 and the lock connecting plate 3, and a cavity 6 is provided between the lock reinforcement plate 4 and the tailgate inner panel 1.

[0021] like Figure 1-Figure 3 As shown, Figure 1 yes Figure 2 In the cross-sectional AA view, since the tailgate inner panel 1 is a directly stressed component, the structure of the tailgate inner panel 1 can be strengthened by setting a lock reinforcement plate 4, and the lock connecting plate 3 connects different parts of the tailgate inner panel 1 to transmit impact force. In the above structure, the tailgate lock installation vertical surface and the large basic surface of the tailgate inner panel 1 form a cavity structure, which effectively supports the tailgate lock installation vertical surface in the Y direction, and transmits the impact force on the tailgate lock when the tailgate is closed to the entire tailgate inner panel 1 through the lock connecting plate 3 and the lock reinforcement plate 4. The impact force is dispersed, which avoids the tailgate inner panel 1 lock installation location being deformed, damaged or displaced by excessive local impact, thereby improving the bearing capacity of this position and meeting the stiffness and strength requirements of the tailgate lock installation structure on the lightweight vehicle body.

[0022] like Figure 1 As shown, the ends of the back door outer panel 2 are provided with a rim 7, and the ends of the back door inner panel 1 extend into the rim 7 and are fixedly connected. Applying the rim 7 to the back door inner and outer sheet metal components connects them, improving processing convenience and reducing welding steps. The rim structure strengthens the sheet metal and eliminates quality issues such as deformation and cracking. It also enhances the appearance. When the back door inner and outer sheet metal components are combined into a whole, they are seamlessly connected, making the overall appearance more neat and beautiful. The rim 7 treatment prevents injuries to operators from sharp edges on the back door inner and outer panels, reducing potential safety hazards.

[0023] like Figure 1 As shown, cavity 6 is located at the bend between the strike reinforcement plate 4 and the tailgate inner panel 1. In this structure, cavity 6 is formed by the bend of the strike reinforcement plate 4, which also forms a reinforcing rib structure, improving the rigidity and stability of the sheet metal. This prevents the strike mounting area of the tailgate inner panel 1 from deforming, cracking, or breaking when the tailgate is closed.

[0024] like Figure 1 As shown, the two ends of the lock connecting plate 3 are fixedly connected to the back door inner panel 1 and the lock reinforcement plate 4. The lock connecting plate 3 connects the end of the back door inner panel 1 to the flat part of the back door inner panel 1, and connects the back door inner panel 1 and the lock reinforcement plate 4 to form a closed loop structure, which can greatly improve the strength of the back door lock and expand the transmission path of the impact force, which is conducive to the impact force being transmitted to the entire back door inner panel 1.

[0025] like Figure 1 As shown, the latch connecting plate 3 and the latch reinforcing plate 4 are both fixedly connected to the inner side of the back door inner plate 1. The latch connecting plate 3 and the latch reinforcing plate 4 are both located inside the back door structure assembly and do not affect the appearance of the vehicle back door.

[0026] like Figure 1 As shown, a nut plate 5 is provided between the lock connecting plate 3 and the lock reinforcing plate 4. The nut plate 5 can be used to fix the back door and firmly connect the door to the vehicle body frame through bolts with the vehicle door frame, ensuring that the door remains stable and safe during driving and preventing the door from loosening or falling off. In addition, as the connection point between the door and the vehicle body, the nut plate 5 provides additional structural support and enhances the overall rigidity of the vehicle body, which helps to reduce distortion and deformation of the vehicle body and improve the stability and safety of the vehicle.

[0027] The back door inner panel 1, the latch connecting plate 3 and the latch reinforcement plate 4 are all fixed by welding. Welding is beneficial to reduce the use of connectors, adapts to the connection of back door sheet metal parts, and has reliable connection strength.

[0028] The installation process is as follows: The strike reinforcement plate 4 and strike connection plate 3 are first welded together using two two-layer welds and a single two-layer weld. The entire assembly is then attached to the tailgate inner panel 1 using two three-layer welds and five two-layer welds. This creates a cavity between the tailgate strike installation surface and the base of the tailgate inner panel 1. Finally, the tailgate outer panel 2 is assembled with the tailgate inner panel 1 via a hemming structure to form the rear tailgate assembly. The tailgate inner panel 1, tailgate outer panel 2, strike connection plate 3, and strike reinforcement plate 4 are all made of HC340 / 590DP / 1.2, which has high yield strength and resists deformation, meeting performance requirements.

[0029] The automobile tailgate lock reinforcement connecting plate structure is provided with a lock connecting plate 3 and a lock reinforcement plate 4 inside the tailgate structure, and the lock reinforcement plate 4 and the tailgate inner plate 1 form a cavity structure, thereby providing effective support for the tailgate lock installation vertical surface in the Y direction, thereby achieving the effect of transmitting the impact force generated by closing the tailgate to the entire tailgate inner plate 1, thereby enhancing the load-bearing capacity, and ensuring reliable strength and rigidity, thus meeting the rigidity and strength requirements of a lightweight vehicle body; it also has the advantages of simple structure, reasonable design, good durability, and easy assembly.

[0030] The above description of the present invention is provided as an example, in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described method. Any non-substantial improvements made using the method concepts and technical solutions of the present invention, or any application of the above-described concepts and technical solutions of the present invention to other situations without modification, are all within the scope of protection of the present invention.

Claims

1. A reinforced connecting plate structure for a car split-back door lock, characterized by: The invention comprises a back door inner panel (1) and a back door outer panel (2), wherein the ends of the back door inner panel (1) and the back door outer panel (2) are fixedly connected, a latch connecting plate (3) is provided between the back door inner panel (1) and the back door outer panel (2), a latch reinforcing plate (4) is provided between the back door inner panel (1) and the latch connecting plate (3), and a cavity (6) is provided between the latch reinforcing plate (4) and the back door inner panel (1).

2. The automobile split-door lock reinforced connecting plate structure according to claim 1, characterized in that: The end of the back door outer panel (2) is provided with an edge (7), and the end of the back door inner panel (1) extends into the edge (7) and is fixedly connected.

3. The automobile split-door lock reinforced connecting plate structure according to claim 2, characterized in that: The cavity (6) is located at the bending point between the lock reinforcement plate (4) and the back door inner plate (1).

4. The automobile split-back door lock reinforced connecting plate structure according to claim 3, characterized in that: The two ends of the lock connecting plate (3) are respectively fixedly connected to the back door inner plate (1) and the lock reinforcing plate (4).

5. The automobile split-back door lock reinforced connecting plate structure according to any one of claims 1 to 4, characterized in that: The lock connecting plate (3) and the lock reinforcing plate (4) are both fixedly connected to the inner side of the back door inner plate (1).

6. The automobile split-back door lock reinforced connecting plate structure according to claim 5, characterized in that: A nut plate (5) is provided between the lock connecting plate (3) and the lock reinforcing plate (4).

7. The automobile split-back door lock reinforced connecting plate structure according to claim 6, characterized in that: The back door inner plate (1), the lock connecting plate (3) and the lock reinforcing plate (4) are all fixed by welding.

Images