CN209776582U

CN209776582U - lightweight vehicle body structure

Info

Publication number: CN209776582U
Application number: CN201920061737.2U
Authority: CN
Inventors: 刘东立
Original assignee: SHANGHAI DONGJIE POLYMER MATERIAL CO Ltd
Current assignee: SHANGHAI DONGJIE POLYMER MATERIAL CO Ltd
Priority date: 2019-01-15
Filing date: 2019-01-15
Publication date: 2019-12-13
Anticipated expiration: 2029-01-15

Abstract

The utility model discloses an upper vehicle body inner plate assembly and a lower vehicle body assembly, which is characterized in that the upper vehicle body inner plate assembly is formed by welding stamping sheet metal parts, the lower vehicle body assembly comprises a vehicle body framework formed by compounding aluminum alloy profiles and non-metallic materials, and a covering part on the surface of the vehicle body adopts a non-metallic part; the non-metal part is fixed on the vehicle body framework in a gluing, bolt connection or riveting connection mode; the upper vehicle body inner plate assembly is connected with the lower vehicle body assembly in a bolt connection or riveting connection mode. The utility model has obvious weight reduction effect, improves the lightweight index of the car body, and reduces the weight by more than 30 to 35 percent; the strength of the metal plate inner plate framework is higher than that of aluminum alloy, the process is mature, the welding precision is high, and the cost is low; compared with the section bar framework, the interior decoration connection does not need a transition piece, and is simple and convenient. The utility model is suitable for a motorcycle types such as passenger car, little face, light passenger, passenger train, pick up, commodity circulation car.

Description

Lightweight vehicle body structure

Technical Field

The utility model relates to a lightweight body structure belongs to automobile manufacturing technical field.

background

the existing vehicle body structure mainly comprises the following three types:

1. The upper vehicle body inner plate assembly is made of steel plate parts, the lower vehicle body assembly is also made of steel plate parts, and the upper vehicle body assembly and the lower vehicle body assembly are connected through welding;

2. The upper vehicle body inner plate assembly and the lower vehicle body assembly both adopt iron frameworks made of profiles, and the outer covering part adopts a non-metal part;

3. The upper vehicle body assembly and the lower vehicle body assembly are respectively an aluminum plate and an aluminum alloy framework, and the upper vehicle body assembly and the lower vehicle body assembly are connected through MIG welding or cold welding.

The three body structures described above all have different drawbacks: the first and second body structures are heavier in weight and the third body structure is more costly. The light weight is one of the most concerned and most core technologies in the new energy automobile industry. The lightweight vehicle body is required to have the same strength, rigidity, fatigue resistance, corrosion resistance, economy, and the like. Therefore, there is a need for a lightweight vehicle body structure that can greatly reduce its own weight without degrading various performances of the vehicle body and increasing the cost.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the problem that will solve is: how to reduce the weight of the vehicle body structure without increasing the cost.

In order to solve the problems, the utility model provides a lightweight vehicle body structure, which comprises an upper vehicle body inner plate assembly and a lower vehicle body assembly, and is characterized in that the upper vehicle body inner plate assembly is formed by welding stamping sheet metal parts, the lower vehicle body assembly comprises a vehicle body framework formed by compounding aluminum alloy sections and non-metallic materials, and a covering part on the surface of the vehicle body adopts a non-metallic part; the non-metal part is fixed on the vehicle body framework in a gluing, bolt connection or riveting connection mode; the upper vehicle body inner plate assembly is connected with the lower vehicle body assembly in a bolt connection or riveting connection mode. The thickness of the sheet metal part adopted by the upper vehicle body inner plate assembly and the thickness of the section bar adopted by the lower vehicle body assembly can be adjusted according to actual strength. The metal plate stamping and welding structure of the upper vehicle body inner plate assembly and the aluminum alloy profile and non-metal material composite structure of the lower vehicle body can be adjusted according to actual requirements.

Preferably, the stamping sheet metal part is made of a steel plate or an aluminum plate.

Preferably, the non-metal part is made of glass fiber reinforced plastic, carbon fiber composite or modified PP.

Preferably, the non-metal part is made of an IPN (interpenetrating Polymer network) polymer alloy material of polydicyclopentadiene elastomer.

Preferably, the riveting is a connection mode of pulling riveting, SPR or FDS.

The utility model provides a mechanical characteristics of car lightweight body structure does:

(1) solid thick structure: local strength and durability are enhanced;

(2) Frame (profile) structure: local strength enhancement under the effect of integral rigidity is exerted;

(3) Plate (shell) structure: the local strength and durability of the surface-to-surface connection are enhanced.

compared with the prior art, the beneficial effects of the utility model reside in that:

1. because the weight of the vehicle body is concentrated on the lower vehicle body assembly of the vehicle body, the lower vehicle body assembly of the vehicle body is made of light materials such as aluminum alloy sections and the like, the weight reduction effect is obvious;

2. The collision energy absorption effect of the aluminum alloy section is higher than that of a high-strength steel plate, the torsional rigidity is higher than that of a metal plate, the lower vehicle body assembly adopts an aluminum alloy section framework, and the vehicle body has good safety;

3. The metal stamping sheet metal part (comprising metal sheet metal, non-metal composite) of the inner plate of the non-metal outer plate + upper vehicle body inner plate assembly and the aluminum alloy framework of the lower vehicle body assembly improves the lightweight index of the vehicle body, and reduces the weight by more than 30 to 35 percent;

4. the strength of the metal plate inner plate framework (containing the high-strength steel plate) is higher than that of aluminum alloy, the process is mature, the welding precision is high, and the cost is low;

5. the four-door two-cover connecting mode is the same as that of the traditional vehicle, the process and the performance are reliable, and the four-door two-cover connecting mode is safer and more convenient than other framework modes;

6. compared with the section bar framework, the interior decoration connection does not need a transition piece, and is simple and convenient.

the utility model is suitable for a motorcycle type structure such as passenger car (car, SUV, MPV), little face, light passenger, passenger train, pick-up, commodity circulation car.

drawings

FIG. 1 is a schematic structural view of an MPV lightweight vehicle body structure;

FIG. 2 is an exploded view of an MPV lightweight vehicle body structure;

FIG. 3 is a schematic structural view of a lower body assembly of the MPV lightweight body structure;

FIG. 4 is a schematic structural view of the aluminum alloy section of FIG. 3;

FIG. 5 is a schematic structural view of the non-metallic material portion of FIG. 3;

FIG. 6 is a schematic structural view of a SUV lightweight vehicle body structure;

FIG. 7 is an exploded view of an SUV lightweight vehicle body structure;

FIG. 8 is a schematic structural view of a lightweight body structure of a single-row trolley;

FIG. 9 is an exploded view of a single row cart lightweight body structure;

FIG. 10 is a schematic structural view of a lightweight body structure of a passenger car;

FIG. 11 is an exploded view of a lightweight body structure of a sedan;

FIG. 12 is a schematic structural view of a pickup truck light weight body structure;

FIG. 13 is an exploded view of a pickup lightweight body structure;

FIG. 14 is a schematic view of an adhesive connection;

FIG. 15 is a schematic view of a bolted connection;

FIG. 16 is a schematic view of a blind rivet connection;

FIG. 17 is a schematic illustration of an FDS connection;

FIG. 18 is a schematic representation of SPR ligation.

Detailed Description

in order to make the present invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.

example 1

as shown in fig. 1-5, a schematic structural diagram of an MPV lightweight vehicle body structure provided in this embodiment includes an upper vehicle body inner panel assembly 1 and a lower vehicle body assembly 2, where the upper vehicle body inner panel assembly 1 is formed by welding stamped sheet metal parts; the lower body assembly 2 includes a body frame made of a composite of an aluminum alloy section and a non-metallic material (as shown in fig. 3-5, the two parts are bonded to each other in this embodiment). The covering part on the surface of the vehicle body adopts a non-metal part, and the non-metal part is fixed on the vehicle body framework in a connecting mode of gluing, bolt connection or riveting. The upper vehicle body inner plate assembly 1 is connected with the lower vehicle body assembly 2 in a bolt connection or riveting connection mode.

The upper vehicle body inner plate assembly 1 is connected with the lower vehicle body assembly 2 in a bolt connection, gluing or riveting connection mode. The non-metal part is fixed on the vehicle body framework in a bolt connection, gluing or riveting connection mode. The non-metal part is made of glass fiber reinforced plastic, carbon fiber composite material or modified PP, and preferably IPN polymer alloy material (patent number: 201610196339.2) made of polydicyclopentadiene elastomer is adopted.

The adhesive connection is shown in fig. 14, and the part a and the part B are bonded by the adhesive therebetween. The manner of attachment of the bolts is shown in figure 15.

The riveting is specifically any one of pulling riveting or cold connecting modes such as SPR and FDS. The manner of attachment by the rivet is shown in fig. 16. The FDS is connected by inserting tapping screws 4 into the overlapping portions of the component a and the component B to be fixed as shown in fig. 17. The connection of SPR is as shown in FIG. 18, the overlapped part of the component A and the component B is inserted into the rivet 5, the rivet 5 passes through the component A, blooms and expands at the component B, and the bloomed part is inserted into the component B and fixed.

Example 2

Fig. 6 and 7 are schematic structural views of the SUV lightweight vehicle body structure provided in this embodiment, and the dot matrix covered portion in fig. 4 is a non-metal part.

example 3

Fig. 8 and 9 are schematic structural views of the lightweight single-row bogie body structure provided in this embodiment, and the dot matrix covered portion in fig. 6 is a non-metal part.

example 4

fig. 10 and 11 are schematic structural views of the car body structure with light weight according to the embodiment, and fig. 8 shows a dot matrix covering part as a non-metal part.

Example 5

fig. 12 and 13 are schematic structural views of a pickup lightweight vehicle body structure according to the present embodiment, and a dot matrix covered portion in fig. 10 is a non-metal member. After the upper vehicle body inner plate assembly 1 and the lower vehicle body assembly 2 are assembled, the rear cargo box assembly 3 is assembled at the rear side thereof.

Claims

1. A light-weight vehicle body structure comprises an upper vehicle body inner plate assembly (1) and a lower vehicle body assembly (2), and is characterized in that the upper vehicle body inner plate assembly (1) is formed by welding stamping sheet metal parts, the lower vehicle body assembly (2) comprises a vehicle body framework formed by compounding aluminum alloy profiles and non-metal materials, and a covering part on the surface of a vehicle body adopts a non-metal part; the non-metal part is fixed on the vehicle body framework in a gluing, bolt connection or riveting connection mode; the upper vehicle body inner plate assembly (1) is connected with the lower vehicle body assembly (2) in a bolt connection or riveting connection mode.

2. the lightweight vehicle body structure of claim 1, wherein said stamped sheet metal part is a steel or aluminum plate.

3. The lightweight vehicle body structure of claim 1, wherein said non-metallic member is made of glass fiber reinforced plastic, carbon fiber composite, or modified PP.

4. The lightweight vehicle body structure of claim 1, wherein the non-metallic member is an IPN polymer alloy material of polydicyclopentadiene elastomer.

5. The light weight vehicle body structure according to claim 1, wherein the rivet is a connection method of a pull rivet, SPR or FDS.