Electric automobile and rear sub frame thereof
A technology for rear subframe and electric vehicle, which is applied to vehicle components, substructures, transportation and packaging, etc., can solve the problems that the bearing strength is difficult to meet the requirements, the overall structure of the rear subframe is complex, and the installation and follow-up maintenance is difficult. The effect of meeting bearing strength requirements
Inactive Publication Date: 2019-10-18
SAIC MOTOR
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Problems solved by technology
However, due to the relatively fixed cross-sectional shape of the tubular beam, in some areas, its load-bearing strength is difficult to meet the requirements, and reinforcement plates need to be installed, which will cause the overall structure of the rear subframe to become complicated, and installation and subsequent maintenance will become difficult
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[0048] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0049] The "several" mentioned in this article refers to a number with an indeterminate number, usually more than two; and when "several" is used to indicate the number of certain components, it does not mean that the number of these components is the same.
[0050]Words such as "first" and "second" mentioned herein are only used to describe two or more structures or components with the same or similar structures, and do not represent any special limitation on the order.
[0051] In this paper, the driving direction of the vehicle is taken as the front-rear direction, where the position close to the front of the vehicle is the front, and the position close to the rear is the rear. The front-rear direction can also be calle...
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The invention discloses an electric automobile and a rear sub frame thereof. The rear sub frame comprises a first cross beam and a second cross beam which are arranged in the front-and-rear directionin a spaced manner; a first longitudinal beam and a second longitudinal beam are connected between the first cross beam and the second cross beam; the first longitudinal beam is positioned above the second longitudinal beam; the first longitudinal beam comprises a first left longitudinal beam and a first right longitudinal beam; the second longitudinal beam comprises a second left longitudinal beam and a second right longitudinal beam; at least one of the first cross beam, the second cross beam, the first longitudinal beam and the second longitudinal beam is a variable section beam surroundedby a plurality of pieces of beams; and each piece of beam is of a plate-shaped structure whose section is not sealed. According to the rear sub frame, at least one of each cross beam and each longitudinal beam is surrounded by the plurality of pieces of beams and can easily surround the variable section beam with a complicated section so as to satisfy bearing strength demands of different areas; and therefore, reinforcing plates do not need to be mounted so that the mounting of the rear sub frame is made easier and the structure of the rear sub frame is simpler.
Description
technical field [0001] The invention relates to the technical field of electric vehicles, in particular to an electric vehicle and its rear auxiliary frame. Background technique [0002] For traditional internal combustion engine vehicles, the powertrain is usually located at the front of the car body. When designing the rear sub-frame, there is no need to consider the influence of the powertrain. It is only necessary to provide mounting points for the suspension system and other surrounding components. , and provide sufficient strength, the design space of the rear subframe is relatively abundant, and the design difficulty is relatively low. [0003] However, with the development of new energy vehicles, models with rear-mounted motors begin to appear. At this time, the rear sub-frame needs to provide enough installation space for the motor, transmission shaft, etc., and even needs to completely carry the motor. The frame system and other surrounding components provide inst...
Claims
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IPC IPC(8): B62D21/02
CPCB62D21/02
Inventor 张宏杜华易斌李剑江洲王玉洁李思明赵雪利李根葛久刚
Owner SAIC MOTOR