CN115610499A

CN115610499A - Macpherson type independent suspension and vehicle

Info

Publication number: CN115610499A
Application number: CN202211242842.9A
Authority: CN
Inventors: 汪文广; 张羽翼; 邢立巍; 刘建华
Original assignee: Zhejiang Geely Holding Group Co Ltd; Zhejiang Yizhen Automobile Research and Development Co Ltd
Current assignee: Zhejiang Geely Holding Group Co Ltd; Zhejiang Yizhen Automobile Research and Development Co Ltd
Priority date: 2022-10-11
Filing date: 2022-10-11
Publication date: 2023-01-17

Abstract

The embodiment of the application provides a Macpherson type independent suspension and a vehicle. The Macpherson type independent suspension comprises a steering gear, a steering knuckle, a shock absorber assembly, a lower swing arm and an auxiliary frame, wherein the steering gear is used for driving the steering knuckle, the steering gear is located in front of a wheel center, one end of the steering knuckle is fixedly connected with the shock absorber assembly, the other end of the steering knuckle is movably connected with one end of the lower swing arm through a ball pin, and the other end of the lower swing arm is fixedly connected with the auxiliary frame. The longitudinal distance between the connecting point of the steering knuckle and the steering tie rod outer ball head of the steering gear and the wheel center is less than 170 mm. Thus, a compatible 16-inch rim can be realized with the front-wheel drive vehicle and the steering device in front.

Description

Macpherson type independent suspension and vehicle

Technical Field

The embodiment of the application relates to the technical field of automotive suspensions, in particular to a Macpherson type independent suspension and a vehicle.

Background

The suspension is a very important system in modern automobiles, connects a rim and an automobile body in a certain mode, transmits force and moment between the rim and the automobile body, and has the effects of buffering impact and attenuating vibration. The suspension can accurately control the motion law of the wheels, and the comfort and the maneuverability of the automobile are guaranteed.

And the independent suspension is that two suspensions on the same axle are respectively and independently installed under the automobile body. The impact on the suspension on the two sides is not influenced mutually. The springs of the independent suspension are light in weight so that the shock transmitted to the vehicle body is smaller and the movement locus of the wheels can be controlled more precisely. The macpherson suspension is a typical independent suspension. The lower swing arm of the Macpherson independent suspension mostly adopts a single ball pin. There are also a few models on the market with a double ball pin version of the lower swing arm, but none of them can cover a 16 inch rim.

Disclosure of Invention

An object of the embodiments of the present application is to provide a macpherson type independent suspension and a vehicle that can achieve compatibility with a 16-inch rim under a condition where a front-wheel-drive vehicle and a steering gear are placed in front.

An aspect of an embodiment of the present application provides a macpherson type independent suspension. The Macpherson type independent suspension comprises a steering gear, a steering knuckle, a shock absorber assembly, a lower swing arm and an auxiliary frame, wherein the steering gear is used for driving the steering knuckle, the steering gear is located in front of a wheel center, one end of the steering knuckle is fixedly connected with the shock absorber assembly, the other end of the steering knuckle is movably connected with one end of the lower swing arm through a ball pin, the other end of the lower swing arm is fixedly connected with the auxiliary frame, and the longitudinal distance between the steering knuckle and a connecting point of an outer ball head of a steering pull rod of the steering gear and the wheel center is smaller than 170 millimeters.

Further, a longitudinal distance between the diverter and the wheel center is less than 220 millimeters.

Further, a longitudinal distance between the diverter and the wheel center is greater than 180 millimeters.

Furthermore, the ball pin comprises a front ball pin and a rear ball pin, and the steering knuckle is movably connected with the lower swing arm through the front ball pin and the rear ball pin.

Further, the straight line distance between the center points of the front ball pin and the rear ball pin of the lower swing arm is more than 75 mm.

Further, the straight line distance between the center points of the front ball pin and the rear ball pin of the lower swing arm is less than 85 mm.

Further, the shock absorber assembly comprises a shock absorber and a spring sleeved on a sliding column of the shock absorber.

Further, the macpherson type independent suspension further comprises a stabilizer bar and a stabilizing connecting rod, one end of the stabilizing connecting rod is movably connected with the lower end of the shock absorber, and the other end of the stabilizing connecting rod is movably connected with the stabilizer bar.

Further, the middle position of the stabilizer bar is connected to the subframe through a bushing.

Another aspect of an embodiment of the present application also provides a vehicle. The vehicle includes a macpherson independent suspension as described in the above embodiments.

The McPherson independent suspension and the vehicle provided by the embodiment can cover a 16-inch rim under the condition that a front-drive electric vehicle and a steering gear are arranged in front, and the 16-inch rim is compatible.

The Macpherson independent suspension and the vehicle of one or more embodiments of the application can avoid the interference of the steering gear and the front driving motor by reasonably arranging the longitudinal distance between the steering gear and the wheel center.

The Macpherson type independent suspension and the vehicle provided by one or more embodiments of the application select double-ball-pin arrangement through the lower swing arm and knuckle-pin connecting points, and through reasonable arrangement of the straight-line distance of the central points of the double-ball-pin, the requirement of the strength of a bearing structure of front axle loads above 1600Kg and below 1900Kg can be met, and meanwhile, the requirement that the steering Ackerman rate is larger than 40% is met.

The Macpherson independent suspension and the vehicle of one or more embodiments of the application realize less steering rack force, the steering rack force can be less than 20KN, and the steering requirement can be met by using a conventional passenger car steering gear.

Drawings

FIG. 1 is a schematic view of a McPherson independent suspension according to an embodiment of the present application;

fig. 2 is a schematic view of another perspective view of a macpherson independent suspension according to an embodiment of the present application.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of devices consistent with certain aspects of the present application, as detailed in the appended claims.

The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, technical or scientific terms used in the embodiments of the present application should have the ordinary meaning as understood by those having ordinary skill in the art to which the present application belongs. The use of "first," "second," and similar terms in the description and claims of this application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" or "a number" means two or more. Unless otherwise indicated, "front", "rear", "lower" and/or "upper" and the like are for convenience of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

One embodiment of the present application provides a macpherson independent suspension. Hereinafter, the macpherson type independent suspension according to the embodiment of the present application will be described in detail with reference to the drawings. The features of the following examples and embodiments may be combined with each other without conflict.

Fig. 1 discloses a schematic view of a macpherson independent suspension 1 according to an embodiment of the present application; fig. 2 discloses a schematic view of another perspective of the macpherson independent suspension 1 according to an embodiment of the present application. Referring to fig. 1 and 2 in combination, a macpherson type independent suspension 1 according to an embodiment of the present disclosure includes a steering gear 10, a knuckle 20, a damper assembly 30, a lower swing arm 40, and a subframe 50. The steering gear 10 may be used to drive the knuckle 20, with the steering gear 10 of the present embodiment being forward, with the steering gear 10 being forward of the wheel center O. One end of the knuckle 20 and the damper assembly 30 may be tightly connected by a bolt, for example, and the other end of the knuckle 20 and one end of the lower swing arm 40 may be movably connected by a ball pin. The other end of the lower swing arm 40 may be fastened to the subframe 50 through a bushing.

The damper assembly 30 includes a spring 31 and a damper 32. The spring 31 may for example comprise a helical spring, the spring 31 fitting over a sliding column of the shock absorber 32. The spring 31 serves to absorb shock, and the damper 32 serves to damp shock when the spring 31 absorbs shock and then rebounds and to absorb energy from road surface shock.

As shown in fig. 1, in some embodiments, the longitudinal (i.e., in the front-rear direction of the vehicle) distance L1 between the connecting point of the knuckle 20 and the tie-rod outer bulb 11 of the steering gear 10 and the wheel center O is less than 170mm (millimeters), so that the connecting point of the knuckle 20 and the tie-rod outer bulb 11 of the steering gear 10 can be within the 16-inch rim boundary, and the layout space requirement of a 16-inch hub can be met. In other embodiments, the longitudinal distance L1 between the center of gravity O and the point of attachment of the knuckle 20 to the tie rod outer bulb 11 of the steering gear 10 may be 158 millimeters.

With continued reference to FIG. 1, in some embodiments, the longitudinal distance L2 between the diverter 10 and the wheel center O is less than 220 millimeters, such that an optimal Ackermann rating can be achieved with reduced rim wear. In other embodiments, the longitudinal distance L2 between the diverter 10 and the wheel center O is greater than 180 millimeters, thereby avoiding interference between the diverter 10 and the precursor motor. In still other embodiments, the longitudinal distance L2 between the steering gear 10 and the wheel center O may be 202 millimeters, such that an optimal Ackermann ratio may be achieved while avoiding interference of the steering gear 10 with the front drive motor.

In some embodiments, the ball pin of the lower swing arm 40 of the embodiments of the present application may take the form of a double ball pin, which includes a front ball pin 41 and a rear ball pin 42, and the steering knuckle 20 may be movably connected with the lower swing arm 40 by the front ball pin 41 and the rear ball pin 42.

As shown in FIG. 2, in some embodiments, the linear distance L3 between the center points of the front ball pin 41 and the rear ball pin 42 of the lower swing arm 40 is greater than 75 mm. Therefore, the strength requirement of the bearing structure of the front axle load of more than 1600Kg (kilogram) can be met. In other embodiments, the linear distance L3 between the center points of the front ball pin 41 and the rear ball pin 42 of the lower swing arm 40 is less than 85 mm, so that the optimal ackermann ratio of more than 40% can be obtained, and the rack force of less than 20KN (kilonewtons) can be satisfied. In still other embodiments, the linear distance L3 between the center points of the front ball pin 41 and the rear ball pin 42 of the lower swing arm 40 may be 80.7 mm, so as to satisfy the structural strength requirement of a front axle load of more than 1600Kg (kilogram), and simultaneously achieve the optimal ackermann ratio of more than 40% and the rack force of less than 20KN. The macpherson independent suspension 1 of the embodiment of the present application can realize coverage of a larger front axle load bandwidth with a smaller rack force.

In some embodiments, the macpherson independent suspension 1 of the present application may further include a stabilizer bar 60 and a stabilizer link 70. The stabilizer bar 60 is connected to the lower end of the shock absorber 32 through a stabilizer link 70. One end of the stabilizer link 70 and the lower end of the shock absorber 32 may be movably connected by a ball pin, for example, and the other end of the stabilizer link 70 and the stabilizer bar 60 may be movably connected by a ball pin, for example. The middle position of the stabilizer bar 60 may be connected to the sub-frame 50 through a bushing 61, for example. Thus, the stability of the vehicle can be improved.

The Macpherson type independent suspension 1 in the embodiment of the application can cover a 16-inch rim under the conditions that a front-driving electric vehicle and a steering gear 10 are arranged in front and the front axle load reaches 1600Kg, and realizes compatibility with the 16-inch rim.

The Macpherson independent suspension 1 of the embodiment of the application avoids the steering gear 10 from interfering with a front drive motor by reasonably arranging the longitudinal distance L2 between the steering gear 10 and the wheel center O.

The lower swing arm 40 of the Macpherson independent suspension 1 and the ball pin connecting point of the steering knuckle 20 are arranged in a double-ball pin mode, the strength requirement of a bearing structure of front axle load of more than 1600Kg and less than 1900Kg is met, and meanwhile the requirement that the steering Ackerman rate is larger than 40% is met.

The Macpherson independent suspension 1 of the embodiment of the application realizes smaller steering rack force, the steering rack force can be smaller than 20KN, and the steering requirement can be met by using the conventional passenger car steering gear 10.

Another embodiment of the present application also provides a vehicle. The vehicle includes the macpherson independent suspension 1 as described in the above respective embodiments.

The vehicle according to the embodiment of the present application has similar beneficial technical effects to the macpherson type independent suspension 1 described above, and therefore, the detailed description thereof is omitted.

The macpherson independent suspension and the vehicle provided in the embodiments of the present application are described in detail above. The macpherson independent suspension and the vehicle according to the embodiment of the present application are described herein by using specific examples, and the above description of the embodiments is only for assisting understanding the core idea of the present application and is not intended to limit the present application. It should be noted that, for those skilled in the art, without departing from the spirit and principle of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications should also fall within the scope of protection of the appended claims of the present application.

Claims

1. A macpherson independent suspension characterized in that: including steering gear, knuckle, bumper shock absorber assembly, lower swing arm and sub vehicle frame, the steering gear is used for the drive the knuckle, the steering gear is located the front of wheel center, the one end of knuckle with bumper shock absorber assembly fastening connection, the other end of knuckle pass through the ball round pin with the one end swing joint of lower swing arm, the other end of lower swing arm with sub vehicle frame fastening connection, wherein, the knuckle with the connecting point of the outer bulb of steering linkage of steering gear with longitudinal distance between the wheel center is less than 170 millimeters.

2. The macpherson independent suspension of claim 1, wherein: the longitudinal distance between the steering gear and the wheel center is less than 220 mm.

3. The macpherson independent suspension of claim 2, wherein: the longitudinal distance between the diverter and the wheel center is greater than 180 millimeters.

4. The macpherson independent suspension of any one of claims 1 to 3, wherein: the ball pin comprises a front ball pin and a rear ball pin, and the steering knuckle is movably connected with the lower swing arm through the front ball pin and the rear ball pin.

5. The macpherson independent suspension of claim 4, wherein: the straight-line distance between the center points of the front ball pin and the rear ball pin of the lower swing arm is more than 75 mm.

6. The macpherson independent suspension of claim 5, wherein: the straight-line distance between the center points of the front ball pin and the rear ball pin of the lower swing arm is less than 85 mm.

7. The macpherson independent suspension of claim 1, wherein: the shock absorber assembly comprises a shock absorber and a spring sleeved on a sliding column of the shock absorber.

8. The macpherson independent suspension of claim 7, wherein: the shock absorber further comprises a stabilizer bar and a stabilizing connecting rod, one end of the stabilizing connecting rod is movably connected with the lower end of the shock absorber, and the other end of the stabilizing connecting rod is movably connected with the stabilizer bar.

9. The macpherson independent suspension of claim 8, wherein: the middle position of the stabilizer bar is connected to the sub-frame through a bushing.

10. A vehicle, characterized in that: comprising a macpherson independent suspension as claimed in any one of claims 1 to 9.