Automobile tail door assembly

Abstract

The automobile tail door assembly comprises a die-casting inner plate and an outer plate assembly, the die-casting inner plate and the outer plate assembly are buckled with each other, the die-casting inner plate is of an integrated die-casting frame structure, and the outer plate assembly comprises an upper outer plate, a lamp trough plate and a lower outer plate which are sequentially arranged from top to bottom; the upper edge and the two vertical side edges of the upper outer plate are connected with the die-casting inner plate, the lower edge of the upper outer plate is connected with the upper edge of the lamp trough plate, the lower edge of the lamp trough plate is connected with the upper edge of the lower outer plate, and the two vertical side edges and the lower edge of the lower outer plate are connected with the die-casting inner plate. The connecting structure has the advantages that the structures of the automobile tail door inner plate and the automobile tail door outer plate are simplified, the weight of an automobile tail door assembly is reduced, and the automobile tail door inner plate and the automobile tail door outer plate are connected quickly and stably.

Description

TECHNICAL FIELD

[0001] The present application relates to the automobile engineering, specifically to a kind of automobile parts. BACKGROUND

[0002] The automobile tail door framework includes outer plate assembly and inner plate assembly connected with each other. In prior art, the inner plate and outer plate assembly of automobile tail door are welded by multiple steel sheet metal parts, and the inner plate and outer plate assembly are connected by bolt or directly welded. The all-steel automobile tail door framework is heavy, and the heavy automobile tail door further increases the weight of the whole vehicle; meanwhile, it needs to configure electric support rod with larger thrust, which is high in cost.

[0003] Researchers plan to use magnesium alloy integrated die casting to manufacture the inner plate of automobile tail door, and cooperate with steel automobile tail door outer plate to reduce the weight of the whole automobile tail door framework. For the integrated inner plate, it is necessary to redesign the structure of outer plate sheet metal part and the connection mode with the inner plate. SUMMARY

[0004] The present application provides an automobile tail door assembly, which comprises a die-cast inner plate and an outer plate assembly, the die-cast inner plate and the outer plate assembly are connected with each other, the die-cast inner plate is an integrated die-cast frame structure, the outer plate assembly comprises an upper outer plate, a lamp groove plate and a lower outer plate arranged in sequence from top to bottom, the upper edge and the two vertical side edges of the upper outer plate are connected with the die-cast inner plate, the lower edge of the upper outer plate is connected with the upper edge of the lamp groove plate, the lower edge of the lamp groove plate is connected with the upper edge of the lower outer plate, and the two vertical side edges and the lower edge of the lower outer plate are connected with the die-cast inner plate. BRIEF DESCRIPTION OF DRAWINGS

[0005] Figure 1 It is a structural schematic diagram of the present application; Figure 2 It is a structural schematic diagram of outer plate assembly B in rear side direction; Figure 3 It is a structural schematic diagram of outer plate assembly B in front side direction; Figure 4 It is a perspective sectional view of outer plate assembly B; Figure 5 It is a longitudinal sectional view of outer plate assembly B; Figure 6 It is an enlarged view of i part of Figure 3 Figure 7 It is an enlarged view of j part of Figure 4 Figure 8 It is a structural schematic diagram of die-cast inner plate A in front side direction from first perspective; Figure 9 ​​This is a schematic diagram of the die-cast inner plate A from a second perspective in the front side direction; Figure 10 This is a schematic diagram of the die-cast inner plate A in the rear side direction; Figure 11 This is a schematic diagram of the external structure of the upper crossbeam 1; Figure 12 This is a structural schematic diagram of the lower crossbeam 2; Figure 13 This is a longitudinal cross-sectional view of the upper crossbeam 1; Figure 14 This is a longitudinal cross-sectional view of the lower crossbeam 2. Detailed Implementation

[0006] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0007] like Figures 1-14 As shown, a car tailgate assembly includes a die-cast inner panel A and an outer panel assembly B, which are interlocked. The die-cast inner panel A is an integral die-cast frame structure. The outer panel assembly B includes an upper outer panel B1, a light trough panel B2, and a lower outer panel B3 arranged sequentially from top to bottom. The upper edge and two vertical sides of the upper outer panel B1 are connected to the die-cast inner panel A. The lower edge of the upper outer panel B1 is connected to the upper edge of the light trough panel B2. The lower edge of the light trough panel B2 is connected to the upper edge of the lower outer panel B3. The two vertical sides and the lower edge of the lower outer panel B3 are connected to the die-cast inner panel A. The upper edge and two vertical sides of the upper outer panel B1 are riveted to the die-cast inner panel A.

[0008] The lower edge of the upper outer plate B1 extends toward the front side of the outer plate assembly to form a first mating edge plate, and the upper edge of the light trough plate B2 extends toward the rear side of the outer plate assembly to form a second mating edge plate. Both the first mating edge plate and the second mating edge plate are horizontally arranged, with the first mating edge plate located below the second mating edge plate. The first mating edge plate and the second mating edge plate are attached and welded together.

[0009] The lower edge of the light trough plate B2 extends horizontally toward the rear side of the outer panel assembly to form a third mating edge plate, and the upper edge of the lower outer panel B3 extends horizontally toward the front side of the outer panel assembly to form a fourth mating edge plate. The third mating edge plate and the fourth mating edge plate are both horizontally arranged, with the third mating edge plate located above the fourth mating edge plate. The third mating edge plate and the fourth mating edge plate are attached and welded together.

[0010] The lower edge of the lower outer plate B3 is bent towards the front side of the outer plate assembly and then extends upwards to form an inner plate lower slot, and the lower edge of the die-cast inner plate A is provided with a lower clamping strip which is inserted into the inner plate lower slot from top to bottom; The two vertical edges of the lower outer plate B3 are bent towards the front side of the outer plate assembly and then extend inwards to form inner plate lateral slots, and the two vertical side edges of the die-cast inner plate A are respectively provided with lateral clamping strips which are located at the lower part of the die-cast inner plate A, the lateral clamping strips correspond to the inner plate lateral slots one by one, and the lateral clamping strips are inserted into the corresponding inner plate lateral slots.

[0011] The upper outer plate B1 is in the shape of a rectangular frame, the front side of the outer plate assembly B is further provided with a rear window glass reinforcing plate B4 which is connected with the lower edge of the rectangular frame-shaped upper outer plate B1, and the rear window glass reinforcing plate B4 is also connected with the lamp groove plate B2.

[0012] The lamp groove plate B2 is in the shape of a strip plate extending along the left-right direction, and the two ends of the lamp groove plate B2 are connected with the vertical edges of the die-cast inner plate A. The lamp groove plate B2 is used for installing a clamped rear door light assembly, and the lamp groove plate B2 is shaped to install the appearance design of the rear door light assembly.

[0013] The die-cast inner plate A includes an upper cross beam 1, a lower cross beam 2 and two side columns 3. The upper cross beam 1 and the lower cross beam 2 are horizontally arranged, the upper cross beam 1 is located above the lower cross beam 2, the two side columns 3 are respectively connected to the two ends of the upper cross beam 1 and the lower cross beam 2, the upper end of the side column 3 is connected with the end of the upper cross beam 1, the lower end of the side column 3 is connected with the end of the lower cross beam 2, a diagonal reinforcing part 4 is connected between the side column 3 and the lower cross beam 2, the upper end of the diagonal reinforcing part 4 is connected with the middle part of the side column 3, and the lower end of the diagonal reinforcing part 4 is connected with the lower cross beam 2. The upper cross beam 1, the lower cross beam 2, the side column 3 and the diagonal reinforcing part 4 are integrally die-cast to form a frame-shaped tailgate inner plate which is generally in the shape of a rectangle. The frame-shaped tailgate inner plate is divided into front and rear sides, the rear side of the tailgate inner plate faces the rear of the vehicle body, and the front side of the tailgate inner plate faces the front of the vehicle body. The upper and lower ends of the side column 3 respectively extend towards the front side of the tailgate inner plate. The frame-shaped tailgate inner plate has an inner ring edge and an outer ring edge. The upper edge and the two vertical side edges of the upper outer plate B1 are connected with the upper edge of the upper cross beam 1, the two ends of the lamp groove plate B2 are connected with the middle part of the side column 3, the lower edge of the lower cross beam 2 is provided with the lower clamping strip, and the outer side edge of the lower end of the side column 3 is provided with the lateral clamping strip.

[0014] The upper cross beam 1 comprises a first upper beam plate 11, a second upper beam plate 12, a third upper beam plate 13 and a fourth upper beam plate 14 arranged in sequence from top to bottom, the first upper beam plate 11, the second upper beam plate 12, the third upper beam plate 13 and the fourth upper beam plate 14 all extend horizontally, the first upper beam plate 11, the second upper beam plate 12, the third upper beam plate 13 and the fourth upper beam plate 14 are all arranged obliquely in the up-down direction, the lower side edge of the first upper beam plate 11, the upper side edge of the second upper beam plate 12, the lower side edge of the third upper beam plate 13 and the upper side edge of the fourth upper beam plate 14 all face the front side direction of the tail door inner plate, the upper side edge of the first upper beam plate 11, the lower side edge of the second upper beam plate 12, the upper side edge of the third upper beam plate 13 and the lower side edge of the fourth upper beam plate 14 all face the rear side direction of the tail door inner plate, the lower side edge of the first upper beam plate 11 is connected with the upper side edge of the second upper beam plate 12, the lower side edge of the second upper beam plate 12 is connected with the upper side edge of the third upper beam plate 13, and the lower side edge of the third upper beam plate 13 is connected with the upper side edge of the fourth upper beam plate 14.

[0015] The middle part of the upper cross beam 1 is provided with a wiper mounting cavity 1a protruding towards the rear side direction of the tail door inner plate, the wiper mounting cavity 1a is provided with two limiting blocks 1b protruding towards the front side direction of the tail door inner plate, the two limiting blocks 1b are both located at the lower part of the wiper mounting cavity 1a, the two limiting blocks 1b are horizontally distributed along the length direction of the upper cross beam 1, a limiting cavity is formed between the two limiting blocks 1b, a wiper connecting hole 1c is respectively arranged on the two limiting blocks 1b, a first boss is respectively extended around the wiper connecting hole 1c on the rear side of the tail door inner plate, and a reinforcing rib is arranged between the outer wall of the first boss and the rear side of the tail door inner plate. The wiper mounting cavity 1a is arranged on the first upper beam plate 11 and the second upper beam plate 12.

[0016] The lower cross beam 2 comprises a first lower beam plate 21, a second lower beam plate 22, a third lower beam plate 23, a fourth lower beam plate 24 and a fifth lower beam plate 25 arranged in sequence from top to bottom; the first lower beam plate 21, the second lower beam plate 22, the third lower beam plate 23, the fourth lower beam plate 24 and the fifth lower beam plate 25 all extend horizontally, and are all arranged obliquely in the up-down direction, the lower side edge of the first lower beam plate 21, the lower side edge of the second lower beam plate 22, the upper side edge of the third lower beam plate 23, the upper side edge of the fourth lower beam plate 24 and the upper side edge of the fifth lower beam plate 25 all face the front side direction of the tail door inner plate; the upper side edge of the first lower beam plate 21, the upper side edge of the second lower beam plate 22, the lower side edge of the third lower beam plate 23, the lower side edge of the fourth lower beam plate 24 and the lower side edge of the fifth lower beam plate 25 all face the rear side direction of the tail door inner plate; the lower side edge of the first lower beam plate 21 is connected with the upper side edge of the second lower beam plate 22, the lower side edge of the second lower beam plate 22 is connected with the upper side edge of the third lower beam plate 23, the lower side edge of the third lower beam plate 23 is connected with the upper side edge of the fourth lower beam plate 24, and the lower side edge of the fourth lower beam plate 24 is connected with the upper side edge of the fifth lower beam plate 25.

[0017] The middle part of the lower cross beam 2 is provided with a lock catch mounting cavity 2a protruding towards the rear side direction of the tail door inner plate, and the lower part of the lock catch mounting cavity 2a is provided with two lock catch mounting parts 2b horizontally distributed along the length direction of the lower cross beam 2. The lock catch mounting cavity 2a is arranged on the second lower beam plate 22 and the third lower beam plate 23, and the lock catch mounting part 2b protrudes towards the rear side direction of the tail door inner plate to form a positioning groove in the lower part of the lock catch mounting cavity 2a and a second boss on the rear side of the tail door inner plate.

[0018] The side column 3 comprises an outer side plate 31, a side column panel 32, an inner side plate 33, an outer wing plate 34 and an inner wing plate 35, which are arranged in sequence from the outer ring to the inner ring of the tail door inner plate, and the side faces of the side column panel 32, the outer wing plate 34 and the inner wing plate 35 are arranged in the front-rear direction of the tail door inner plate, and the side faces of the outer side plate 31 and the inner side plate 33 are arranged in the inner-outer ring direction of the tail door inner plate. The side column panel 32 is extended from the upper cross beam 1 to the lower cross beam 2, the front side edge of the outer side plate 31 is connected with the outer ring edge of the side column panel 32, and the rear side edge of the outer side plate 31 is connected with the inner ring edge of the outer wing plate 34. The inner side plate 33 is connected with the upper section of the edge column panel 32, the front side edge of the inner side plate 33 is connected with the inner ring edge of the edge column panel 32, the inner wing plate 35 is connected with the lower section of the edge column panel 32, and the outer ring edge of the inner wing plate 35 is connected with the inner ring edge of the edge column panel 32. The upper end of the oblique reinforcing part 4, the lower end of the inner side plate 33 and the upper end of the inner wing plate 35 are integrated, and the lower cross beam 2 below the oblique reinforcing part 4 is provided with a lightening hole.

[0019] The oblique reinforcing part 4 comprises an oblique panel 41 and an oblique side plate 42; the side surface of the oblique panel 41 is arranged along the front-rear direction of the tail door inner plate, the upper portion of the oblique panel 41 is integrated with the upper end of the inner wing plate 35 in a natural transition manner, and the upper end of the oblique panel 41 is connected with the inner side plate 33; the oblique side plate 42 is located in the rear side direction of the oblique panel 41, the upper side of the oblique panel 41 is connected with the oblique side plate 42, and the upper end of the oblique side plate 42 is connected with the inner side plate 33.

[0020] The end of the first upper beam plate 11 is simultaneously connected with the upper end of the outer wing plate 34 and the upper end of the outer side plate 31 in a natural transition manner, the end of the third upper beam plate 13 is connected with the upper end of the edge column panel 32 in a natural transition manner, and the end of the fourth upper beam plate 14 is connected with the upper end of the inner side plate 33 in a natural transition manner. The end of the first lower beam plate 21 is connected with the lower end of the oblique side plate 42 in a natural transition manner, the end of the second lower beam plate 22 is connected with the lower end of the oblique panel 41 and the lower end of the inner wing plate 35 in a natural transition manner, the end of the fourth lower beam plate 24 is connected with the lower end of the edge column panel 32 in a natural transition manner, and the end of the fifth lower beam plate 25 is connected with the lower end of the outer side plate 31 in a natural transition manner.

[0021] A support rod connecting hole 3a is arranged in the middle portion of the outer side plate 31. The two ends of the upper cross beam 1 are respectively provided with door plate hinge mounting holes 1d.

[0022] Beneficial effects: the technical scheme of the present application simplifies the structure of the automobile tail door inner and outer plates, reduces the weight of the automobile tail door assembly, and enables the automobile tail door inner and outer plates to be quickly and stably connected.

[0023] Finally, it should be noted that the above description is only for the preferred embodiments of the present application, and those skilled in the art can make various similar modifications under the inspiration of the present application without departing from the purpose and scope of the present application, and such modifications fall within the protection scope of the present application.

Claims

1. A car tailgate assembly, comprising a die-cast inner panel (A) and an outer panel assembly (B), wherein the die-cast inner panel (A) and the outer panel assembly (B) are interlocked, characterized in that: The die-cast inner plate (A) is an integrated die-cast frame structure. The outer plate assembly (B) includes an upper outer plate (B1), a lamp trough plate (B2), and a lower outer plate (B3) arranged sequentially from top to bottom. The upper edge and two vertical sides of the upper outer plate (B1) are connected to the die-cast inner plate (A). The lower edge of the upper outer plate (B1) is connected to the upper edge of the lamp trough plate (B2). The lower edge of the lamp trough plate (B2) is connected to the upper edge of the lower outer plate (B3). The two vertical sides and the lower edge of the lower outer plate (B3) are connected to the die-cast inner plate (A).

2. The automobile tailgate assembly according to claim 1, characterized in that: The upper edge and two vertical sides of the upper outer plate (B1) are riveted to the die-cast inner plate (A).

3. The automobile tailgate assembly according to claim 1, characterized in that: The lower edge of the upper outer plate (B1) extends toward the front side of the outer plate assembly to form a first mating edge plate, and the upper edge of the light trough plate (B2) extends toward the rear side of the outer plate assembly to form a second mating edge plate. Both the first mating edge plate and the second mating edge plate are horizontally arranged, with the first mating edge plate located below the second mating edge plate. The first mating edge plate and the second mating edge plate are attached and welded together.

4. The automobile tailgate assembly according to claim 1, characterized in that: The lower edge of the light trough plate (B2) extends horizontally toward the rear side of the outer panel assembly to form a third mating edge plate, and the upper edge of the lower outer panel (B3) extends horizontally toward the front side of the outer panel assembly to form a fourth mating edge plate. The third mating edge plate and the fourth mating edge plate are both horizontally arranged, with the third mating edge plate located above the fourth mating edge plate. The third mating edge plate and the fourth mating edge plate are attached and welded together.

5. The automobile tailgate assembly according to claim 1, characterized in that: The lower edge of the lower outer plate (B3) bends toward the front side of the outer plate assembly and then extends upward to form a lower slot for the inner plate. The lower edge of the die-cast inner plate (A) is provided with a lower snap-fit ​​strip, which is inserted into the lower slot of the inner plate from top to bottom. The two vertical edges of the lower outer plate (B3) bend toward the front side of the outer plate assembly and then extend inward to form inner plate side slots. The two vertical sides of the die-cast inner plate (A) are respectively provided with side snap-fit ​​strips. The side snap-fit ​​strips are located at the lower part of the die-cast inner plate (A). The side snap-fit ​​strips correspond one-to-one with the inner plate side slots. The side snap-fit ​​strips are inserted into the corresponding inner plate side slots.

6. The automobile tailgate assembly according to claim 1, characterized in that: The upper outer panel (B1) is rectangular in shape, and the front side of the outer panel assembly (B) is also provided with a rear window glass reinforcement plate (B4). The rear window glass reinforcement plate (B4) is connected to the lower edge strip of the rectangular upper outer panel (B1); the rear window glass reinforcement plate (B4) is also connected to the light groove plate (B2).

7. The automobile tailgate assembly according to claim 1, characterized in that: The lamp trough plate (B2) is a strip extending in the left-right direction, and both ends of the lamp trough plate (B2) are connected to the vertical edge of the die-cast inner plate (A).

8. The automobile tailgate assembly according to claim 1, characterized in that: The die-cast inner plate (A) includes an upper crossbeam (1), a lower crossbeam (2), and two side columns (3); The upper crossbeam (1) and the lower crossbeam (2) are horizontally arranged. The upper crossbeam (1) is located above the lower crossbeam (2). The two side columns (3) are respectively connected to the two ends of the upper crossbeam (1) and the lower crossbeam (2). The upper end of the side column (3) is connected to the end of the upper crossbeam (1), and the lower end of the side column (3) is connected to the end of the lower crossbeam (2). An oblique reinforcing part (4) is connected between the side column (3) and the lower crossbeam (2). The upper end of the oblique reinforcing part (4) is connected to the middle of the side column (3), and the lower end of the oblique reinforcing part (4) is connected to the lower crossbeam (2). The upper crossbeam (1), lower crossbeam (2), side column (3) and oblique reinforcement (4) are integrally die-cast to form a frame-shaped tailgate inner panel; The middle part of the side post (3) bends and protrudes towards the rear side of the inner panel of the tailgate.

9. The automobile tailgate assembly according to claim 8, characterized in that: The upper crossbeam (1) has a wiper mounting cavity (1a) protruding towards the rear side of the tailgate inner panel in the middle. The wiper mounting cavity (1a) has two limiting blocks (1b) protruding towards the front side of the tailgate inner panel. The two limiting blocks (1b) are located at the lower part of the wiper mounting cavity (1a). The two limiting blocks (1b) are horizontally distributed along the length of the upper crossbeam (1). A limiting cavity is formed between the two limiting blocks (1b). Wiper connecting holes (1c) are provided on the two limiting blocks (1b). A first boss extends around the wiper connecting hole (1c) on the rear side of the tailgate inner panel. A reinforcing rib is provided between the outer wall of the first boss and the rear side of the tailgate inner panel.

10. The automobile tailgate assembly according to claim 8, characterized in that: The lower crossbeam (2) has a latch mounting cavity (2a) protruding towards the rear side of the inner panel of the tailgate in the middle. The lower part of the latch mounting cavity (2a) has two latch mounting parts (2b), which are horizontally distributed along the length of the lower crossbeam (2). The latch mounting part (2b) protrudes toward the rear side of the tailgate inner panel to form a positioning groove in the lower part of the latch mounting cavity (2a) and a second protrusion on the rear side of the tailgate inner panel.

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