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Lightweight rear suspension structure applied to electric automobiles

An electric vehicle, lightweight technology, applied in the direction of suspension, elastic suspension, vehicle spring, etc., can solve the problems of large unsprung mass, small specific stiffness, poor ride comfort and ride comfort, etc., to reduce self-weight , Linear stiffness change, the effect of improving ride comfort

Pending Publication Date: 2020-01-14
德力新能源汽车有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The specific stiffness of the traditional leaf spring is small, and the unsprung mass of the suspension is too large. The large unsprung mass on uneven roads leads to poor driving comfort and ride comfort, especially for trucks carrying fragile goods and passenger cars. Users have a greater influence

Method used

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  • Lightweight rear suspension structure applied to electric automobiles
  • Lightweight rear suspension structure applied to electric automobiles
  • Lightweight rear suspension structure applied to electric automobiles

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0028] like Figure 1 to Figure 5 As shown, the present invention includes a single leaf spring 6 made of composite material, the front end 3 of the single leaf spring 6 is connected with a front ear 3.3, and the rear end 7 of the single leaf spring 6 is connected with a rear ear 7.2, The middle part 5 of the single leaf spring is located in the leaf spring seat 5.3 of the rear axle, and the middle part 5 of the single leaf spring is equipped with a backing plate frame 5.6 and two U-shaped bolts 5.1, and the two U-shaped bolts 5.1 are connected to the backing plate frame by nuts 5.6, the backing plate frame 5.6 is close to the bottom of the rear axle leaf spring seat 5.3 and the backing plate frame 5.3, the single leaf spring 6 and the rear axle leaf spring seat 5.3 are fixedly connected by the rivet head 5.5, and the backing plate frame 5.6 A shock absorber 4 is hinged on the top, and the upper end of the shock absorber 4 is used to be connected to the longitudinal beam 1 of ...

specific Embodiment 2

[0034] like Image 6 and Figure 7 , as shown, the difference from the specific embodiment 1 is that the front end 3 of the single-leaf leaf spring 6 and the rear end 7 of the single-leaf leaf spring 6 have different structural forms to match the use of the vehicle body longitudinal beam 1 of the vehicle body mounting points of different widths, The front roll ear includes a front U-shaped roll ear body 3.8, and the front end 3 of the single leaf spring 6 extends into the front U-shaped roll ear body 3.8 and the front U-shaped roll ear body 3.8 is fixedly connected to the single piece by fastening bolts 3.7. The front end portion 3 of the leaf spring 6 is embedded with a front leaf spring rubber bushing 3.6 at the front end portion of the front U-shaped roll ear body 3.8, and the front leaf spring rubber bush 3.6 is provided with a front spring for connecting to the longitudinal beam 1 of the vehicle body. Lug pin 3.5;

[0035] The rear ear includes a rear U-shaped ear body ...

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Abstract

The invention discloses a lightweight rear suspension structure applied to electric automobiles. The lightweight rear suspension structure comprises a monolithic-leaf plate spring made of a compositematerial, wherein the front end of the monolithic-leaf plate spring is connected with a front spring eye; the rear end of the monolithic-leaf plate spring is connected with a rear spring eye; the middle part of the monolithic-leaf plate spring is located in a rear axle plate spring seat; the middle part of the monolithic-leaf plate spring is equipped with a backing plate frame and two U-shaped bolts; the two U-shaped bolts are connected to the backing plate frame through nuts; the backing plate frame is clung to the bottom of the rear axle plate spring seat; the backing plate frame, the monolithic-leaf plate spring and the rear axle plate spring seat are fixedly connected with each other through rivet heads; the backing plate frame is articulated with a damper; the upper end of the damperis connected to an automobile body longitudinal beam. Compared with the existing rear suspension, which adopts (3 plus 2)-leaf two-stage stiffness springs, the lightweight rear suspension structure only adopts one monolithic-leaf plate spring made of the composite material, so that the mounting requirement is simplified; the weight of the monolithic-leaf plate spring is only 1 / 3 of the weight of the original steel plate spring; the inner damping resistance among leaves does not exist in the monolithic-leaf plate spring; the stiffness change is more linear; and the driver and the passengers feel more comfortable.

Description

technical field [0001] The invention belongs to the technical field of electric vehicle manufacturing, and in particular relates to a lightweight rear suspension structure for an electric vehicle. Background technique [0002] my country's car ownership and sales are increasing year by year, making my country's dependence on foreign oil is increasing year by year, and energy saving and consumption reduction are urgent. Forced by the country's requirements for the gradual reduction of vehicle fuel consumption, major automobile manufacturers have stepped up the development and promotion of new energy vehicles, especially pure electric vehicles, and the sales of electric vehicles are gradually increasing. Compared with traditional fuel vehicles, the capacity of power batteries currently used in electric vehicles is much smaller than the specific energy of fuel, and the introduction of batteries has greatly increased the vehicle's overall quality, which makes the cruising range ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60G11/10B60G15/02
CPCB60G11/10B60G15/02B60G2202/112
Inventor 朱宏献辛京宋汶艳吴耀斌赵万里王亮孟庆坤郑登峰
Owner 德力新能源汽车有限公司
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