CN119428115A - Tailgate reinforcement structure, tailgate and automobile - Google Patents

Abstract

The present invention belongs to the field of automobiles, and specifically relates to a tailgate reinforcement structure, a tailgate, and an automobile, which are assembled on the inner panel of the tailgate, wherein the tailgate reinforcement structure comprises a tailgate reinforcement member, wherein the tailgate reinforcement member connects the reinforcement plate pre-assembled on the inner panel of the tailgate in series; the reinforcement plate comprises a hinge reinforcement plate and a lock reinforcement plate; the hinge reinforcement plate is assembled on the hinge installation area of the inner panel of the tailgate; the lock reinforcement plate is assembled on the lock installation area of the inner panel of the tailgate; the tailgate reinforcement member connects the hinge reinforcement plate and the lock reinforcement plate, and is fixedly connected with the inner panel of the tailgate to form an integrated series structure. Compared with the prior art, the present invention solves the problem of insufficient strength of the tailgate structure in the prior art, and realizes that when the tailgate is subjected to external force, the rigidity and strength of the entire tailgate are guaranteed, the tailgate is prevented from opening after a collision, and a safe connection is guaranteed after a collision breakage.

Description

Tail gate additional strengthening, tail gate and car

Technical Field

The invention belongs to the field of automobiles, and particularly relates to a tail gate reinforcing structure, a tail gate and an automobile.

Background

The automobile tail gate is used as a functional part of an automobile, and has higher requirements in performance. The inner plate of the tail gate is usually added with partial metal plates for reinforcing the overall rigidity and strength, and meanwhile, under the concept of light weight of automobiles, the requirement of weight reduction of the tail gate is also increasing.

The reinforcement scheme in the prior art comprises metal sheet insert injection molding and metal piece post-assembly.

The composite material tail gate inner plate of metal sheet metal inserts, such as CN201821002612.4, CN201921559813.9, and the like, is easy to crack because of the problem of the dimensional accuracy of the metal sheet metal, and is difficult to mold because of the complex molded surface of the composite material tail gate inner plate, and the cost is increased because of more working procedures.

The composite tail gate assembled after the metal piece is connected through fastening points or glue, such as CN201820456439.9, CN201811613063.9 and the like, and the cost advantage is low.

In addition, in any reinforcing scheme, the large-area metal parts can make the whole weight of the automobile tail door heavier, and the requirement of light weight cannot be met.

Therefore, there is a need to develop a tail gate reinforcing structure that can satisfy both structural reinforcement and a certain weight reduction.

Disclosure of Invention

The invention aims to solve at least one of the problems and provide a tail gate reinforcing structure, a tail gate and an automobile, so as to solve the problem of insufficient structural strength of the tail gate in the prior art, ensure the rigidity and strength of the whole tail gate when the tail gate is acted by external force, prevent the tail gate from being opened after collision and ensure safe connection after collision and fracture.

The aim of the invention is achieved by the following technical scheme:

the invention discloses a tail gate reinforcing structure, which is assembled on a tail gate inner plate, wherein the tail gate reinforcing structure comprises tail gate reinforcing pieces, and the tail gate reinforcing pieces are used for connecting pre-assembled reinforcing plates on the tail gate inner plate in series;

the reinforcing plate comprises a hinge reinforcing plate and a lock reinforcing plate;

The hinge reinforcing plate is assembled in a hinge installation area of the tail door inner plate;

The lock reinforcing plate is assembled in a lock mounting area of the tail door inner plate;

The tail gate reinforcement is connected with the hinge reinforcing plate and the lock reinforcing plate and is fixedly connected with the tail gate inner plate to form an integrated serial structure.

Preferably, the reinforcing plate further comprises a stay bar ball reinforcing plate assembled in a stay bar installation area of the inner plate of the tail gate, and the tail gate reinforcing piece is further connected with the stay bar ball reinforcing plate.

Preferably, nuts are fixed on the tail gate reinforcement, and the tail gate reinforcement is fixedly connected with the reinforcement plate and the tail gate inner plate through bolt connection.

Preferably, the tail gate reinforcement is welded and fixed with the nut.

Preferably, the cross section of the tail gate reinforcement at the joint is square, the nut is a hexagonal nut, and the tail gate inner plate, the reinforcing plate, the tail gate reinforcement and the nut are fixedly connected through bolts after being sequentially arranged.

Preferably, the cross section of the tail gate reinforcement at the joint is oblate, the nut is a high-head nut, and the tail gate inner plate, the reinforcing plate, the nut and the tail gate reinforcement are fixedly connected through bolts after being sequentially arranged.

Preferably, the inner side surface of the tail gate inner plate is provided with a flanging for limiting the tail gate reinforcement.

Preferably, the tail gate reinforcement is a metal piece or a plastic piece.

In a second aspect, the invention discloses a tailgate provided with a tailgate reinforcement structure as described above.

A third aspect of the invention discloses a motor vehicle fitted with a tailgate reinforcement structure as defined in any one of the preceding claims, or with a tailgate as defined in the preceding claims.

Compared with the prior art, the invention has the following beneficial effects:

The invention provides a tail gate reinforcing structure, which aims to strengthen the strength of a tail gate, reduce the weight of the tail gate assembly and further enlarge a process window of a composite material tail gate while reducing the cost of the tail gate assembly.

This tail-gate additional strengthening will be located several main atress key points on the tail-gate through the tail-gate reinforcement and realize establishing ties, form a continuous atress route, can improve the holistic intensity of tail-gate, use than traditional large tracts of land metal sheet, the weight of tail-gate reinforcement is light to can further promote tail-gate wholeness ability.

Drawings

FIG. 1 is a schematic view of a tailgate equipped with a tailgate reinforcement structure;

fig. 2 is a schematic structural view of a tail gate reinforcement, wherein fig. 2 (a) is a schematic structural view of a tail gate reinforcement with a square cross section, fig. 2 (B) is a schematic structural view of A-A in fig. 2 (a), fig. 2 (c) is a schematic structural view of a tail gate reinforcement with a circular cross section, and fig. 2 (d) is a schematic structural view of B-B in fig. 2 (c);

fig. 3 is a schematic view of a connection structure of the tail gate reinforcement at the hinge reinforcement plate, wherein fig. 3 (a) is a schematic view of a connection structure of the tail gate reinforcement with a square section at the hinge reinforcement plate, and fig. 3 (b) is a schematic view of a connection structure of the tail gate reinforcement with a circular section at the hinge reinforcement plate;

FIG. 4 is a schematic view of the structure of the tailgate reinforcement at the hinge reinforcement panel;

Fig. 5 is a schematic view of an assembly structure of the tail gate reinforcement on the tail gate inner panel, wherein fig. 5 (a) is a schematic view of a structure of an inner side surface of the tail gate inner panel, and fig. 5 (b) is a schematic view of a structure of an outer side surface of the tail gate inner panel;

FIG. 6 is a schematic view of the connection structure of the tail gate reinforcement at the lock reinforcement plate, wherein FIG. 6 (a) is a schematic view of the connection of the tail gate reinforcement with a square section at the lock reinforcement plate, and FIG. 6 (b) is a schematic view of the connection of the tail gate reinforcement with a circular section at the lock reinforcement plate;

FIG. 7 is a schematic view of the connection of the tail gate reinforcement at the stay bar ball reinforcement plate;

In the figure, the structure comprises a 1-hinge reinforcing plate, a 2-tail gate reinforcing piece, a 3-lock reinforcing plate, a 4-tail gate inner plate, a 5-high head nut, a 6-hexagonal nut, a 7-bolt, an 8-hinge, a1 a-hinge mounting point, a1 b-hinge positioning structure, a1 c-blind rivet, a 2 a-tail gate inner plate mounting point, a 3 a-lock mounting point and a 3 b-locking position structure.

Detailed Description

The invention will now be described in detail with reference to the drawings and specific examples.

Example 1

A tail gate reinforcement structure, as shown in fig. 1-7, is assembled on a tail gate inner panel 4, the tail gate reinforcement structure comprises a tail gate reinforcement 2, and the tail gate reinforcement 2 connects pre-assembled reinforcement plates on the tail gate inner panel 4 in series;

The reinforcing plate comprises a hinge reinforcing plate 1 and a lock reinforcing plate 3;

The hinge reinforcing plate 1 is assembled in the mounting area of the hinge 8 of the tail door inner plate 4;

The lock reinforcing plate 3 is assembled in the lock mounting area of the tail door inner plate 4;

The tail gate reinforcement 2 is connected with the hinge reinforcement plate 1 and the lock reinforcement plate 3 and is fixedly connected with the tail gate inner plate 4 to form an integrated series structure.

More specifically, in the present embodiment:

As shown in fig. 1, the tail gate reinforcement 2 connects the hinge reinforcement plate 1 (for reinforcing the local strength of the installation area of the hinge 8) and the lock reinforcement plate 3 (for reinforcing the local strength of the installation area of the lock), and at the same time, the tail gate reinforcement 2 is fixedly connected with the tail gate inner plate 4, so that the tail gate inner plate 4, the hinge reinforcement plate 1 and the lock reinforcement plate 3 form a series structure, and the tail gate has a continuous stress path, thereby improving the overall strength of the tail gate. To the condition that still is provided with the bulb mounting point on the tail-gate, can be through increasing the pole bulb reinforcing plate is connected to one section tail-gate reinforcement 2, strengthen bulb department structure.

The tail gate reinforcement 2 is formed by bending a standard section profile as shown in fig. 2, the material of the tail gate reinforcement 2 comprises but is not limited to metal or plastic, the main purpose is to provide strength and fixation and series connection of metal pieces (reinforcing plates) and a tail gate inner plate 4 in each area, fig. 2 shows a square section tail gate reinforcement 2 (fig. 2 (a) and fig. 2 (b)) and a round section tail gate reinforcement 2 (fig. 2 (c) and fig. 2 (d)) which are conventionally used, the square section tail gate reinforcement 2 can be directly matched with a mounting surface at the connection part due to the shape of the tail gate reinforcement 2, the process path is mainly bending and punching, and the round section tail gate reinforcement 2 needs to be subjected to multiple flattening procedures at the connection part to form a oblate shape so as to ensure the matching with the mounting surface. Overall, the tailgate reinforcement 2 is simpler and less costly than conventional sheet metal forming processes.

Fig. 3 (a) and 3 (b) show schematic assembly structures of the square-section tailgate reinforcement 2 and the circular-section tailgate reinforcement 2 at the connection (exemplified by the hinge 8 mounting plate), respectively. It can be seen that the hinge 8, the inner door panel 4, the mounting plate for the hinge 8 and the reinforcing member 2 are fastened and fixed by screw-fitting between nuts previously fixed to the reinforcing member 2 and bolts 7 sequentially passing through the respective layers. As can be seen from the square section tail gate reinforcement 2 shown in fig. 3 (a), the hinge 8, the tail gate inner plate 4, the hinge 8 mounting plate and the tail gate reinforcement 2 are sequentially arranged, the hexagonal nut 6 is welded and fixed on the outer side of the tail gate reinforcement 2, and the bolt 7 sequentially passes through the hinge 8, the tail gate inner plate 4, the hinge 8 mounting plate and the tail gate reinforcement 2 and then is in threaded locking with the hexagonal nut 6. As can be seen from the circular cross section tail gate reinforcement 2 shown in fig. 3 (b), at the junction, the tail gate reinforcement 2 is flattened to form an oblate shape, on which the high head nut 5 penetrating the inside is welded, and the hinge 8, the tail gate inner plate 4, the hinge 8 mounting plate, the high head nut 5 and the tail gate reinforcement 2 are arranged in this order and sequentially penetrated by the bolts 7 to form a screw assembly. The connection between the tail gate reinforcement 2, the tail gate inner plate 4 and the reinforcing plate plays a role in improving rigidity and strength in the whole composite material tail gate assembly, and meanwhile, when the composite material tail gate is broken due to high-speed collision, the door can be prevented from being opened, and secondary injury is avoided.

Fig. 4 is a schematic view of a partial structure of the tail gate reinforcement 2 assembled on the mounting plate of the hinge 8, taking the square-section tail gate reinforcement 2 as an example. The hinge 8 mounting plate is positioned on the tail door inner plate 4 through a hinge positioning structure 1b, is connected through bolts 7 through nuts (hinge mounting points 1 a) pre-welded on the inner side of the hinge 8 mounting plate, and finally, the fixed mounting of the hinge 8 mounting plate on the inner side of the tail door inner plate 4 is further completed through a blind rivet 1 c. The tailgate reinforcement 2 is then assembled and secured with the hinge 8 mounting plate and tailgate inner panel 4 in the manner described above.

As shown in fig. 5, a fixed connection is formed between the tail gate reinforcement 2 and the tail gate inner panel 4 by the assembly as described above, which is a tail gate inner panel mounting point 2a. As can be seen from fig. 5 (a) and 5 (b), the inner side surface of the inner tailgate panel 4 is provided with a flange, the tailgate reinforcement 2 is limited, and the outer side surface of the inner tailgate panel 4 is not provided with a flange.

Fig. 6 is a connection structure of the tailgate reinforcement 2 at the lock mounting region, the lock reinforcing plate 3, wherein fig. 6 (a) is a schematic view of a connection structure of the tailgate reinforcement 2 of a square section, and fig. 6 (b) is a schematic view of a connection structure of the tailgate reinforcement 2 of a circular section. It can be seen that the lock reinforcing plate 3 is positioned on the inner door panel 4 by the lock positioning structure 3b and is fixedly assembled with the inner door panel 4 at the lock mounting point 3a, and the mounting positions of the lock reinforcing plate 3 are inconsistent according to the different sectional shapes of the tail door reinforcing member 2.

Fig. 7 shows a connection structure of the tail gate reinforcement 2 when a stay bar ball reinforcement plate (stay bar installation area) exists on the inside of the tail gate, which is connected with the stay bar ball reinforcement plate, and the stay bar ball reinforcement plate is used as a relay structure to connect the reinforcement plates through two or more sections of the tail gate reinforcement 2.

The tail gate reinforcing structure is arranged behind the tail gate, when the tail gate is acted by external force, the rigidity and the strength of the whole tail gate can be ensured, the tail gate is prevented from being opened after collision, the safe connection after collision and fracture is ensured, meanwhile, the cost of the tail gate assembly is reduced, the weight of the tail gate assembly is reduced, and the process window of the composite material tail gate is enlarged.

The present embodiment also proposes a tailgate equipped with the tailgate reinforcing structure as described above to reinforce the strength and rigidity of the tailgate.

The present embodiment also proposes an automobile equipped with a tailgate as described above.

The reinforcing structure can be further expanded, and has certain practical significance and reference value in the use scenes of other products needing to be increased in strength and rigidity. In addition, the reinforcing structure can also make various changes, such as the change of the cross section shape, the material and the connecting area of the reinforcing piece in a multi-section or whole circle and the connecting form, and the structure of the reinforcing piece is not limited to a standard cross section and a metal piece, and can also be a plastic bracket with an irregular cross section, and the like.

The previous description of the embodiments is provided to facilitate a person of ordinary skill in the art in order to make and use the present invention. It will be apparent to those skilled in the art that various modifications can be readily made to these embodiments and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above-described embodiments, and those skilled in the art, based on the present disclosure, should make improvements and modifications without departing from the scope of the present invention.

Claims (10)

1. A tailgate reinforcement structure, assembled on a tailgate inner panel (4), characterized in that the tailgate reinforcement structure comprises a tailgate reinforcement member (2), wherein the tailgate reinforcement member (2) connects in series the reinforcement plates preassembled on the tailgate inner panel (4); The reinforcement plate comprises a hinge reinforcement plate (1) and a lock reinforcement plate (3); The hinge reinforcement plate (1) is mounted on the hinge installation area of the tailgate inner plate (4); The lock reinforcement plate (3) is mounted on the lock installation area of the tailgate inner plate (4); The tailgate reinforcement member (2) is connected to the hinge reinforcement plate (1) and the lock reinforcement plate (3), and is fixedly connected to the tailgate inner plate (4) to form an integrated series structure. 2. A tailgate reinforcement structure according to claim 1, characterized in that the reinforcement plate also includes a strut ball head reinforcement plate mounted in the strut mounting area of the tailgate inner panel (4), and the tailgate reinforcement (2) is also connected to the strut ball head reinforcement plate. 3. A tailgate reinforcement structure according to claim 1 or 2, characterized in that a nut is fixed on the tailgate reinforcement (2), and the tailgate reinforcement (2) is fixedly connected to the reinforcement plate and the tailgate inner plate (4) by bolts (7). 4. A tailgate reinforcement structure according to claim 3, characterized in that the tailgate reinforcement (2) is fixed to the nut by welding. 5. A tailgate reinforcement structure according to claim 3, characterized in that the cross-section of the tailgate reinforcement (2) at the connection is square, the nut is a hexagonal nut (6), and the tailgate inner plate (4), the reinforcement plate, the tailgate reinforcement (2) and the nut are arranged in sequence and fixedly connected by bolts (7). 6. A tailgate reinforcement structure according to claim 3, characterized in that the cross-section of the tailgate reinforcement (2) at the connection is oval, the nut is a high-head nut (5), and the tailgate inner panel (4), the reinforcement plate, the nut and the tailgate reinforcement (2) are arranged in sequence and fixedly connected by bolts (7). 7. A tailgate reinforcement structure according to claim 1 or 2, characterized in that the tailgate inner plate (4) is provided with a flange on the inner side surface for limiting the tailgate reinforcement member (2). 8. A tailgate reinforcement structure according to claim 1, characterized in that the tailgate reinforcement member (2) is a metal member or a plastic member. 9. A tailgate, characterized in that the tailgate is equipped with a tailgate reinforcement structure as claimed in any one of claims 1 to 8. 10. An automobile, characterized in that the automobile is equipped with the tailgate reinforcement structure according to any one of claims 1 to 8, or is equipped with the tailgate according to claim 9.