Multifunctional double frame structure front subframe

Abstract

The present invention belongs to the technical field of automobile structure, and specifically relates to a multifunctional double-frame structure front subframe. It includes a front crossbeam, a left longitudinal arm, a right longitudinal arm and a "turtle shell" type lower shell; the left and right ends of the front crossbeam are respectively connected to the left longitudinal arm and the right longitudinal arm; the right longitudinal arm is provided with a first right tower, a second right tower, and a third right tower, and the left longitudinal arm is provided with a first left tower, a second left tower, and a third left tower; the front crossbeam, the front section of the left longitudinal arm, the front section of the right longitudinal arm and the front part of the lower shell constitute the first frame structure; the front crossbeam, the left longitudinal arm, the right longitudinal arm and the rear part of the lower shell constitute the second frame structure; the second right tower and the right longitudinal arm, the second left tower and the left longitudinal arm respectively form a "ge"-shaped structure. The front subframe structure is stable and compact, and is provided with a plurality of mounting points for other functional parts, which reduces the number of single pieces, increases the function of the product, and reduces the control cost in product production.

Description

Technical Field

[0001] The present invention belongs to the technical field of automotive structures, and particularly relates to a multi-functional double-frame type front subframe. Background Art

[0002] With the significant annual increase in new energy vehicles in recent years, the usage of their components has also increased synchronously. The front subframe is a component of the suspension system of the vehicle chassis. On the one hand, as a connecting component between the vehicle body and the control arm, it bears a large impact force to buffer the vibration of the vehicle body and improve the comfort of passengers. On the other hand, as a functional component, it is used to install pedestrian protection devices, front control arms, steering gears, stabilizer bars, motors, battery protection brackets, etc., playing multiple functions.

[0003] In the prior art, the installation points between the front subframe and the tower of the vehicle body are mostly 4 points, and the structure of the tower is mostly a vertically independent structure, with poor stability and low stiffness. The pedestrian protection device is installed separately on other components of the vehicle body, increasing the number of loose parts and the control cost. The versatility is poor, and the front subframes of engine fuel vehicles and new energy electric vehicles cannot be interchanged, and different front subframes need to be developed separately to meet the requirements, increasing the product series and resulting in poor market competitiveness. The support stiffness of the single-frame structure is poor, and there is a possibility of structural deformation after long-term use, increasing the risk of front-wheel steering or tire uneven wear.

[0004] Therefore, there is an urgent need for a solution to solve the above technical problems. Summary of the Invention

[0005] In order to solve the above technical problems, the purpose of the present invention is to provide a multi-functional double-frame type front subframe, which has a compact structure, is provided with installation points for multiple other functional components, reduces the number of single parts, increases the functions of the product, and reduces the control cost in product production.

[0006] To achieve the above technical purpose, the present invention adopts the following technical solutions: A multi-functional double-frame type front subframe, comprising a front cross member, a left longitudinal arm, a right longitudinal arm, and a "turtle shell" type lower housing; the left and right ends of the front cross member are respectively connected to the left longitudinal arm and the right longitudinal arm;

[0007] The front end, middle part, and tail end of the right longitudinal arm are respectively provided with a first right tower, a second right tower, and a third right tower, and the front end, middle part, and tail end of the left longitudinal arm are respectively provided with a first left tower, a second left tower, and a third left tower;

[0008] The front cross member, the front section of the left longitudinal arm, the front section of the right longitudinal arm, and the front part of the lower housing form a first frame structure; the front cross member, the left longitudinal arm, the right longitudinal arm, and the rear part of the lower housing form a second frame structure; the second right tower and the right longitudinal arm, and the second left tower and the left longitudinal arm respectively form a "one" character structure.

[0009] As a preferred technical solution, a first motor suspension bracket is arranged on the front cross beam, a second motor suspension bracket is arranged on the front section of the right longitudinal arm or the left longitudinal arm, and a third motor suspension bracket and an engine suspension bracket are arranged on the front part of the lower shell.

[0010] As a preferred technical solution, a pedestrian protection device is installed at the front end of the front cross beam.

[0011] As a preferred technical solution, a steering gear mounting hole and a stabilizer bar mounting hole are arranged on the lower housing.

[0012] As a preferred technical solution, a battery protection bracket is arranged at the bottom of the lower shell.

[0013] As a preferred technical solution, control arm mounting positions are arranged on both sides of the lower shell.

[0014] Due to the adoption of the above technical solution, the present invention has at least the following beneficial effects:

[0015] (1) The front cross beam, the front section of the left longitudinal arm, the front section of the right longitudinal arm and the front part of the lower shell body form a first frame structure; the front cross beam, the left longitudinal arm, the right longitudinal arm and the rear part of the lower shell body form a second frame structure; the second right tower and the right longitudinal arm, the second left tower and the left longitudinal arm respectively form a "G"-shaped structure; in this way, the double frame structure and the double frames share a plurality of triangular stable supports, which greatly enhances the stability of the frame structure.

[0016] (2) By arranging a first motor suspension bracket on the front cross beam, arranging a second motor suspension bracket on the front section of the right longitudinal arm or the left longitudinal arm, and arranging a third motor suspension bracket and an engine suspension bracket on the front part of the lower shell, the vehicle can be used for both new energy electric vehicles with a front motor and fuel vehicles with a front engine, thereby enhancing the versatility of the product.

[0017] (3) The subframe is provided with connection interfaces and brackets for multiple functional parts, which provides more functionality, reduces the number of individual parts, increases the functions of the product, reduces the management and control costs in product production, has cost advantages, and is conducive to the promotion of the same platform and modular models. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following drawings are intended only to illustrate and explain the present invention, and do not limit the scope of the present invention.

[0019] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0020] Figure 2 Schematic diagram of the structure of an embodiment of the present invention including a frame shown by a dotted line. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with the accompanying drawings and examples. In the following detailed description, certain exemplary embodiments of the present invention are described only by way of illustration. Needless to say, those of ordinary skill in the art will recognize that the described embodiments may be modified in various ways without departing from the spirit and scope of the present invention. Therefore, the drawings and description are illustrative in nature and are not intended to limit the scope of protection of the claims.

[0022] like Figure 1 and Figure 2 As shown, the multifunctional double-frame structure front subframe includes a front crossbeam 1, a left longitudinal arm 18, a right longitudinal arm 4 and a "turtle shell" type lower shell 16; the left and right ends of the front crossbeam 1 are respectively connected to the left longitudinal arm 18 and the right longitudinal arm 4;

[0023] The front end, middle part and tail end of the right longitudinal arm 4 are respectively provided with a first right tower 3, a second right tower 6 and a third right tower 7, and the front end, middle part and tail end of the left longitudinal arm 18 are respectively provided with a first left tower 19, a second left tower 13 and a third left tower 10, each tower is used to be connected to the vehicle body;

[0024] refer to Figure 2 The front cross beam 1, the front section of the left longitudinal arm 18, the front section of the right longitudinal arm 4 and the front part of the lower shell 16 form a first frame structure I; the front cross beam, the left longitudinal arm, the right longitudinal arm and the rear part of the lower shell form a second frame structure II; the second right tower and the right longitudinal arm, the second left tower and the left longitudinal arm respectively form a "ge"-shaped structure III. The double frame structure and the double frames share multiple triangular stable supports, which greatly enhances the stability of the frame structure.

[0025] refer to Figure 1 The front cross beam 4 is provided with a first motor suspension bracket 17, the front section of the right longitudinal arm 4 is provided with a second motor suspension bracket 5, and the front part of the lower housing 16 is provided with a third motor suspension bracket 15 and an engine suspension bracket 14. In this way, it can be used for both new energy electric vehicles with front motors and fuel vehicles with front engines, which enhances the versatility of the product.

[0026] Refer to Figure 1 , a pedestrian protection device 2 is installed at the front end of the front crossbeam 4. The lower shell 16 is provided with a steering gear mounting hole 8 and a stabilizer bar mounting hole 9, a battery protection bracket 12 is arranged at the bottom of the lower shell 16, and control arm mounting positions 11 are arranged on both sides of the lower shell 16. The connection interfaces and brackets of multiple functional parts are arranged in this way, which plays a more functional role, reduces the number of single parts, increases the function of the product, reduces the management and control costs in product production, has cost advantages, and is conducive to the promotion of the same platform and modular models.

[0027] In the description of the present invention, it is necessary to understand that the terms "left", "right",

[0028] The directions or positional relationships indicated by “first”, “second”, “third”, “upper”, “lower”, etc. are based on the directions or positional relationships shown in the drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limitations on the present invention.

[0029] The above description is only an illustrative embodiment of the present invention and is not intended to limit the scope of the present invention. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principle of the present invention shall fall within the scope of protection of the present invention.

Claims

1. Multifunctional double-frame front subframe, characterized by: It includes a front cross beam, a left longitudinal arm, a right longitudinal arm and a "turtle shell" type lower shell; the left and right ends of the front cross beam are respectively connected to the left longitudinal arm and the right longitudinal arm; The front end, middle part and tail end of the right longitudinal arm are respectively provided with a first right tower, a second right tower and a third right tower, and the front end, middle part and tail end of the left longitudinal arm are respectively provided with a first left tower, a second left tower and a third left tower; The front cross beam, the front section of the left longitudinal arm, the front section of the right longitudinal arm and the front part of the lower shell form a first frame structure; the front cross beam, the left longitudinal arm, the right longitudinal arm and the rear part of the lower shell form a second frame structure; the second right tower and the right longitudinal arm, the second left tower and the left longitudinal arm respectively form a "ge"-shaped structure; the first frame structure and the second frame structure form a double frame structure, and the double frame structure shares a triangular stabilizing support, thereby enhancing the stability of the frame structure; A first motor suspension bracket is arranged on the front cross beam, a second motor suspension bracket is arranged on the front section of the right longitudinal arm or the left longitudinal arm, a third motor suspension bracket and an engine suspension bracket are arranged on the front part of the lower shell; a steering gear mounting hole and a stabilizer bar mounting hole are arranged on the lower shell; a battery protection bracket is arranged at the bottom of the lower shell; and control arm mounting positions are arranged on both sides of the lower shell.

2. The multifunctional double-frame front subframe according to claim 1, characterized in that: A pedestrian protection device is installed at the front end of the front cross beam.

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