Reinforcing plate structure of automobile back door spare tire

Abstract

The utility model provides an automobile back door spare tire reinforcing plate structure which comprises a spare tire reinforcing plate with an n-shaped cross section, the spare tire reinforcing plate is arranged between a back door outer plate and a back door inner plate, and the upper end and the lower end of the spare tire reinforcing plate are respectively provided with a rear connecting edge which protrudes towards the back door outer plate and is bent. The rear connecting edge is fixedly connected with the back door outer plate; the left end and the right end of the spare tire reinforcing plate are respectively provided with a front connecting edge which protrudes towards the back door inner plate and is bent, and the front connecting edges are fixedly connected with the back door inner plate. According to the utility model, the requirements of the external spare tire can be met while the performance and function indexes such as NVH (Noise Vibration and Harshness), vehicle door collision safety and vehicle door sagging are met, the structural stability is ensured, and the sagging resistance is good.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile bodies, in particular to a spare tire reinforcement plate structure for an automobile rear door. Background Art

[0002] With the development of the domestic SUV market, hard-core SUVs have become a new trend in recent years. The iconic side-opening tailgate and back-mounted spare tire or small backpack design of hard-core SUVs highlight the personality of off-road and meet the pursuit of today's off-road enthusiasts. The back-mounted spare tire does provide convenience to a certain extent, and it will be of great help in the wild, especially in muddy environments. The back-mounted spare tire is easy to remove, and it can also try to avoid dirtying clothes. In addition, the back-mounted spare tire can save more space, and the freed space can be used to place a fuel tank to increase mileage.

[0003] Compared with the traditional lift-up tailgate, the back-hung side-opening tailgate greatly increases the weight of the door. To ensure that the tailgate sheet metal assembly does not deform or sag after the spare tire is hung, the tailgate itself must have strong rigidity, of which the structure of the spare tire reinforcement plate and the connection method of the tailgate are crucial. The side-opening tailgate connects the body to the tailgate through hinges and struts, which means that all the weight falls on the hinge when the tailgate is opened, which affects the service life of the hinge. This also puts higher requirements on the rigidity of the tailgate hinge installation point at the side end. If the rigidity is not met, the tailgate will sag, the basic function of the door opening will fail, and it may be difficult to open and close the door. The traditional spare tire reinforcement plate is made of a relatively large and thick steel plate (material thickness 2.0mm). The spare tire reinforcement plate is welded with the rear door inner plate to form a cavity. The contact area between the spare tire reinforcement plate and the rear door inner plate is relatively small. When the impact force is transmitted from the spare tire reinforcement plate to the inner plate, there is a risk of cracking the inner plate. Not only is the structural rigidity insufficient, it is also not conducive to the lightweight of the entire vehicle, and the cost of the entire vehicle will also increase. Therefore, it is necessary to invent a new structure of the spare tire reinforcement plate for the rear door of an automobile. Utility Model Content

[0004] The purpose of the utility model is to provide a spare tire reinforcement plate structure for a car rear door, which meets the performance and functional indicators such as NVH, door collision safety, and door droop, while meeting the needs of an external spare tire, ensuring that the structure is stable and has good anti-droop performance.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A spare tire reinforcement plate structure for a car rear door includes a spare tire reinforcement plate with an I-shaped cross-section, wherein the spare tire reinforcement plate is arranged between the rear door outer panel and the rear door inner panel, and the upper and lower ends of the spare tire reinforcement plate are both provided with rear connecting edges protruding and bent toward the rear door outer panel, and the rear connecting edges are fixedly connected to the rear door outer panel; the left and right ends of the spare tire reinforcement plate are both provided with front connecting edges protruding and bent toward the rear door inner panel, and the front connecting edges are fixedly connected to the rear door inner panel.

[0007] Furthermore, the upper left, lower left, upper right and lower right parts of the spare tire reinforcement plate are respectively fixedly connected with the upper left mounting bracket, the lower left mounting bracket, the upper right mounting bracket and the lower right mounting bracket, and the right sides of the upper right mounting bracket and the lower right mounting bracket are also fixedly connected with a hinge mounting nut plate; one side of the upper left mounting bracket, the lower left mounting bracket, the upper right mounting bracket, the lower right mounting bracket and the hinge mounting nut plate are all fixedly connected to the outer panel of the rear door.

[0008] Furthermore, the upper left mounting bracket, lower left mounting bracket, upper right mounting bracket, lower right mounting bracket, and hinge mounting nut plate are respectively protruded toward the direction of the inner panel of the tailgate and are bent to provide an upper left connecting edge, lower left connecting edge, upper right connecting edge, lower right connecting edge, and right connecting edge. The upper left connecting edge and lower left connecting edge are fixedly connected to the front connecting edge on the left side of the spare tire reinforcement plate to form a left mounting boss. The upper right connecting edge, lower right connecting edge, and right connecting edge are fixedly connected to the front connecting edge on the right side of the spare tire reinforcement plate to form a right mounting boss. The left mounting boss and the right mounting boss are both fixedly connected to the inner panel of the tailgate.

[0009] Furthermore, a left weight-reducing groove is formed on the left mounting boss, and a right weight-reducing groove is formed on the right mounting boss.

[0010] Furthermore, the material thickness of the upper left mounting bracket, the lower left mounting bracket, the upper right mounting bracket, the lower right mounting bracket, and the hinge mounting nut plate are all .mm.

[0011] Furthermore, the material thickness of the spare tire reinforcement plate is 1.5 mm.

[0012] Furthermore, a spare tire bracket nut plate is fixedly connected to a side of the rear connecting edge away from the rear door outer panel.

[0013] Furthermore, the material thickness of the spare tire bracket nut plate is 1.5 mm.

[0014] Furthermore, a plurality of ventilation windows are provided on the spare tire reinforcement plate.

[0015] Furthermore, a counterweight mounting boss is provided on the spare tire reinforcement plate.

[0016] The beneficial effects of the utility model: the utility model strengthens the structure of the tailgate and the outer panel through the spare tire reinforcement plate with an "X"-shaped structure, which has a significant strengthening effect on the drooping performance of the tailgate, and is connected to the spare tire reinforcement plate through multiple brackets. If there is a structural change, only a single part needs to be changed. The overall structure is simple and stable, light in weight, and the production cost is low.

[0017] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model is an assembly diagram of a spare tire reinforcement plate structure for a rear door of an automobile.

[0019] Figure 2 for Figure 1 AA cross-section diagram.

[0020] Figure 3 The utility model is a structural diagram of a spare tire reinforcement plate for a rear door of an automobile.

[0021] Figure 4 This is a structural diagram of a spare tire reinforcement plate for a rear door of an automobile in another direction according to the utility model.

[0022] Figure 5 The utility model is a front view of a spare tire reinforcement plate structure for a rear door of an automobile.

[0023] Figure 6 The utility model is a rear view of a spare tire reinforcement plate structure for a rear door of an automobile.

[0024] Figure 7 The utility model is a top view of a spare tire reinforcement plate structure for a rear door of an automobile.

[0025] Figure 8 The utility model is an exploded view of the spare tire reinforcement plate structure of a car rear door.

[0026] Fig. 9 This is an exploded view of the spare tire reinforcement plate structure of the rear door of an automobile in another direction according to the utility model. DETAILED DESCRIPTION

[0027] like Figures 1 to 9A spare tire reinforcement plate structure for a car rear door shown in the figure includes a spare tire reinforcement plate 1 with a cross-section of a "J"-shaped structure, wherein the spare tire reinforcement plate 1 is arranged between a rear door outer panel 100 and a rear door inner panel 200, and the upper and lower ends of the spare tire reinforcement plate 1 are provided with rear connecting edges 12 protruding and bent toward the rear door outer panel 1000, and the rear connecting edges 12 are fixedly connected to the rear door outer panel 1000; the left and right ends of the spare tire reinforcement plate 1 are provided with front connecting edges 11 protruding and bent toward the rear door inner panel 200, and the front connecting edges 11 are fixedly connected to the rear door inner panel 200.

[0028] Preferably, in combination with the above scheme, in order to cooperate with the spare tire reinforcement plate 1 to realize the fixed connection of the peripheral parts, the upper left part, lower left part, upper right part and lower right part of the spare tire reinforcement plate 1 are respectively fixedly connected with the upper left mounting bracket 2, the lower left mounting bracket 3, the upper right mounting bracket 4 and the lower right mounting bracket 5 by welding, and the right sides of the upper right mounting bracket 4 and the lower right mounting bracket 5 are also fixedly connected with the hinge mounting nut plate 6; one side of the upper left mounting bracket 2, the lower left mounting bracket 3, the upper right mounting bracket 4, the lower right mounting bracket 5 and the hinge mounting nut plate 6 are all fixedly connected with the rear door outer panel 1000. The upper left mounting bracket 2, the lower left mounting bracket 3, the upper right mounting bracket 4, the lower right mounting bracket 5, and the upper right mounting bracket 4 and the lower right mounting bracket 5 are respectively convexly welded with an M6 nut for the installation of the spare tire cover of the rear door.

[0029] Preferably, in combination with the above scheme, in order to increase the structural rigidity while being fixedly connected to the tailgate inner panel 200, the upper left mounting bracket 2, the lower left mounting bracket 3, the upper right mounting bracket 4, the lower right mounting bracket 5, and the hinge mounting nut plate 6 are respectively protruded toward the tailgate inner panel 200 and bent to provide an upper left connecting edge 21, a lower left connecting edge 31, an upper right connecting edge 41, a lower right connecting edge 51, and a right connecting edge 61. The upper left connecting edge 21 and the lower left connecting edge 31 are fixedly connected to the front connecting edge 11 on the left side of the spare tire reinforcement plate 1 to form a left mounting boss. The upper right connecting edge 41, the lower right connecting edge 51, and the right connecting edge 61 are fixedly connected to the front connecting edge 11 on the right side of the spare tire reinforcement plate 1 to form a right mounting boss. The left mounting boss and the right mounting boss are both fixedly connected to the tailgate inner panel 200.

[0030] Preferably, in combination with the above solution, for lightweight design, a left weight-reducing groove 10 is formed on the left mounting boss, and a right weight-reducing groove 20 is formed on the right mounting boss.

[0031] Preferably, in combination with the above solution, the material thickness of the upper left mounting bracket 2, the lower left mounting bracket 3, the upper right mounting bracket 4, the lower right mounting bracket 5, and the hinge mounting nut plate 6 are all 1.0 mm, and the material is H340LA low-alloy high-strength steel.

[0032] Preferably, in combination with the above solution, the spare tire reinforcement plate 1 has a thickness of 1.5 mm and is made of H340LA low alloy high strength steel.

[0033] Preferably, in combination with the above solution, in order to facilitate the fixed connection of the spare tire bracket, the side of the rear connection edge 12 away from the rear door outer panel 100 is fixedly connected with a spare tire bracket nut plate 7. Two M10 projection welding nuts are welded on the spare tire bracket nut plate 7. The spare tire bracket nut plate 7 is provided with two groups, which are respectively located on the upper and lower sides of the spare tire reinforcement plate 1, and are fixedly connected to the spare tire reinforcement plate 1 by spot welding, providing strong installation point rigidity.

[0034] Preferably, in combination with the above solution, the spare tire bracket nut plate 7 has a thickness of 1.5 mm and is made of H340LA low alloy high strength steel.

[0035] Preferably, in combination with the above solution, in order to achieve weight reduction while designing ventilation, a plurality of ventilation windows 13 are provided on the spare tire reinforcement plate 1 .

[0036] Preferably, in combination with the above solution, in order to facilitate the installation of the counterweight, a counterweight installation boss 14 is provided on the spare tire reinforcement plate 1.

[0037] Through the above structure, the spare tire reinforcement plate can have stronger anti-bending and anti-shearing functions, while improving local stiffness, it can make more contributions to the support of the spare tire. Compared with the traditional structure, the structure of the spare tire reinforcement plate in the utility model is simple in process, convenient in welding process, higher in performance improvement, more conducive to lightweight of the whole vehicle, easy to implement, and has strong practicality and good application prospects.

[0038] It should be noted that all directional indications in the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0039] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the utility model, or they are directly applied to other occasions without improvement, they all fall within the protection scope of the utility model.

Claims

1. A spare tire reinforcement plate structure for a car rear door, characterized in that: The invention comprises a spare tire reinforcement plate (1) with a cross-section structure of a "X" shape, wherein the spare tire reinforcement plate (1) is arranged between a rear door outer panel (100) and a rear door inner panel (200), and the upper and lower ends of the spare tire reinforcement plate (1) are provided with rear connecting edges (12) protruding and bent toward the rear door outer panel (100), and the rear connecting edges (12) are fixedly connected to the rear door outer panel (100); the left and right ends of the spare tire reinforcement plate (1) are provided with front connecting edges (11) protruding and bent toward the rear door inner panel (200), and the front connecting edges (11) are fixedly connected to the rear door inner panel (200).

2. The automobile rear door spare tire reinforcement plate structure according to claim 1 is characterized in that: The upper left part, lower left part, upper right part and lower right part of the spare tire reinforcement plate (1) are respectively fixedly connected to an upper left mounting bracket (2), a lower left mounting bracket (3), an upper right mounting bracket (4) and a lower right mounting bracket (5); the right sides of the upper right mounting bracket (4) and the lower right mounting bracket (5) are also fixedly connected to a hinge mounting nut plate (6); one side of the upper left mounting bracket (2), the lower left mounting bracket (3), the upper right mounting bracket (4), the lower right mounting bracket (5) and the hinge mounting nut plate (6) are all fixedly connected to the rear door outer panel (100).

3. The automobile rear door spare tire reinforcement plate structure according to claim 2 is characterized in that: The upper left mounting bracket (2), the lower left mounting bracket (3), the upper right mounting bracket (4), the lower right mounting bracket (5), and the hinge mounting nut plate (6) are respectively protruded toward the direction of the back door inner panel (200) and bent to form an upper left connecting edge (21), a lower left connecting edge (31), an upper right connecting edge (41), a lower right connecting edge (51), and a right side connecting edge (61); the upper left connecting edge (21) and the lower left connecting edge (31) are fixedly connected to the front connecting edge (11) on the left side of the spare tire reinforcement plate (1) to form a left mounting boss; the upper right connecting edge (41), the lower right connecting edge (51), and the right side connecting edge (61) are fixedly connected to the front connecting edge (11) on the right side of the spare tire reinforcement plate (1) to form a right mounting boss; and the left mounting boss and the right mounting boss are both fixedly connected to the back door inner panel (200).

4. The automobile rear door spare tire reinforcement plate structure according to claim 3 is characterized in that: A left weight-reducing groove (10) is formed on the left mounting boss, and a right weight-reducing groove (20) is formed on the right mounting boss.

5. The automobile rear door spare tire reinforcement plate structure according to claim 2 or 3, characterized in that: The material thickness of the upper left mounting bracket (2), the lower left mounting bracket (3), the upper right mounting bracket (4), the lower right mounting bracket (5), and the hinge mounting nut plate (6) are all 1.0 mm.

6. The automobile rear door spare tire reinforcement plate structure according to claim 1, characterized in that: The material thickness of the spare tire reinforcement plate (1) is 1.5 mm.

7. The automobile rear door spare tire reinforcement plate structure according to claim 1, characterized in that: A spare tire bracket nut plate (7) is fixedly connected to a side of the rear connecting edge (12) away from the rear door outer panel (100).

8. The automobile rear door spare tire reinforcement plate structure according to claim 7, characterized in that: The material thickness of the spare tire bracket nut plate (7) is 1.5 mm.

9. The automobile rear door spare tire reinforcement plate structure according to claim 1, characterized in that: The spare tire reinforcement plate (1) is provided with a plurality of ventilation windows (13).

10. The automobile rear door spare tire reinforcement plate structure according to claim 1, characterized in that: The spare tire reinforcement plate (1) is provided with a counterweight mounting boss (14).

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