Macpherson independent suspension and vehicle

Abstract

The embodiment of the application provides a MacPherson independent suspension and a vehicle. The MacPherson independent suspension comprises a steering gear, a steering knuckle, a shock absorber assembly, a lower swing arm and a subframe, the steering gear is used for driving the steering knuckle, the steering gear is located in front of a wheel hub, 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 subframe. Wherein, the longitudinal distance between the connecting point of the steering knuckle and the outer ball head of the steering pull rod of the steering gear and the wheel hub is less than 170 mm. Thus, compatibility with a 16-inch rim can be realized under the condition that the front-drive electric vehicle and the steering gear are front-mounted.

Description

Technical Field

[0001] This application relates to the field of automotive suspension technology, and more particularly to a MacPherson strut independent suspension and vehicle. Background Technology

[0002] The suspension is a crucial system in modern automobiles. It connects the wheel rims to the vehicle body in a specific way, transmitting the forces and torques between the rims and the body, and serving to cushion impacts and dampen vibrations. The suspension precisely controls the movement of the wheels, ensuring both comfort and handling of the vehicle.

[0003] Independent suspension consists of two separate suspensions mounted on the same axle, each mounted independently under the vehicle body. Impacts received by the two suspensions are independent of each other. Independent suspension springs are lighter, resulting in less impact transmitted to the vehicle body and allowing for more precise control of wheel movement. The MacPherson strut suspension is a typical example of independent suspension. Most MacPherson strut independent suspensions use a single ball-pin lower control arm. A few models on the market use a double ball-pin lower control arm, but none of these can accommodate 16-inch wheels. Summary of the Invention

[0004] The purpose of this application is to provide a MacPherson independent suspension and vehicle that can be compatible with 16-inch rims under the conditions of front-wheel drive tram and front-mounted steering.

[0005] One aspect of this application provides a MacPherson strut independent suspension. The MacPherson strut independent suspension includes a steering gear, a steering knuckle, a shock absorber assembly, a lower control arm, and a subframe. The steering gear drives the steering knuckle and is located in front of the wheel center. One end of the steering knuckle is rigidly connected to the shock absorber assembly, and the other end of the steering knuckle is movably connected to one end of the lower control arm via a ball joint. The other end of the lower control arm is rigidly connected to the subframe. The longitudinal distance between the connection point of the steering knuckle and the outer ball joint of the steering tie rod of the steering gear and the wheel center is less than 170 mm.

[0006] Furthermore, the longitudinal distance between the steering gear and the wheel center is less than 220 mm.

[0007] Furthermore, the longitudinal distance between the steering gear and the wheel center is greater than 180 mm.

[0008] Furthermore, the ball joint includes a front ball joint and a rear ball joint, and the steering knuckle is movably connected to the lower control arm via the front ball joint and the rear ball joint.

[0009] Furthermore, the straight-line distance between the center points of the front ball joint and the rear ball joint of the lower control arm is greater than 75 mm.

[0010] Furthermore, the straight-line distance between the center points of the front ball joint and the rear ball joint of the lower control arm is less than 85 mm.

[0011] Furthermore, the shock absorber assembly includes a shock absorber and a spring sleeved on the slide of the shock absorber.

[0012] Furthermore, the MacPherson strut independent suspension also includes a stabilizer bar and a stabilizer link, one end of the stabilizer link being movably connected to the lower end of the shock absorber, and the other end of the stabilizer link being movably connected to the stabilizer bar.

[0013] Furthermore, the middle portion of the stabilizer bar is connected to the subframe via a bushing.

[0014] Another aspect of this application provides a vehicle. The vehicle includes a MacPherson strut independent suspension as described in the various embodiments above.

[0015] The MacPherson strut independent suspension and vehicle of one or more embodiments of this application can cover 16-inch rims under the condition of front-wheel drive tram and front steering, thus achieving 16-inch rim compatibility.

[0016] The MacPherson independent suspension and vehicle of one or more embodiments of this application can avoid interference between the steering gear and the front drive motor by reasonably arranging the longitudinal distance between the steering gear and the wheel center.

[0017] The MacPherson independent suspension and vehicle of one or more embodiments of this application select a double ball pin arrangement at the ball pin connection point between the lower control arm and the steering knuckle. Furthermore, through the reasonable arrangement of the straight-line distance between the center points of the double ball pins, the load-bearing structural strength requirements of the front axle load of 1600Kg or more and 1900Kg or less can be met, while also meeting the requirement that the steering Ackermann ratio is greater than 40%.

[0018] The MacPherson strut independent suspension and vehicle of one or more embodiments of this application achieve a small steering rack force, which can be less than 20 kN, and the steering requirements can be met using a conventional passenger car steering system. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a MacPherson strut independent suspension according to an embodiment of this application;

[0020] Figure 2 This is a schematic diagram from another perspective of a MacPherson strut independent suspension according to one embodiment of this application. Detailed Implementation

[0021] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses consistent with some aspects of this application as detailed in the appended claims.

[0022] The terminology used in the embodiments of this application is for the purpose of describing specific embodiments only and is not intended to limit the application. Unless otherwise defined, the technical or scientific terms used in the embodiments of this application should be understood in their ordinary sense by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are only used to distinguish different components. Similarly, the terms "a" or "one" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. "A plurality" or "several" indicates two or more. Unless otherwise indicated, the terms "front," "rear," "lower," and / or "upper" and similar terms are for ease of description only and are not limited to a location or spatial orientation. The terms "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" cover the elements or objects listed after "comprising" or "including" and their equivalents, and do not exclude other elements or objects. The terms "connected" or "linked" and similar terms are not limited to physical or mechanical connections and can include electrical connections, whether direct or indirect. The singular forms “a,” “the,” and “the” used in this application specification and appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0023] One embodiment of this application provides a MacPherson strut independent suspension. The MacPherson strut independent suspension of this application embodiment will be described in detail below with reference to the accompanying drawings. Unless otherwise specified, the following embodiments and features in the embodiments can be combined with each other.

[0024] Figure 1 A schematic diagram of a MacPherson strut independent suspension 1 according to an embodiment of this application is disclosed; Figure 2 A schematic diagram showing another perspective of a MacPherson strut independent suspension 1 according to one embodiment of this application is provided. (Referring to...) Figure 1 and Figure 2As shown, one embodiment of the MacPherson strut independent suspension 1 of this application includes a steering gear 10, a steering knuckle 20, a shock absorber assembly 30, a lower control arm 40, and a subframe 50. The steering gear 10 can be used to drive the steering knuckle 20. In this embodiment, the steering gear 10 is front-mounted, located in front of the wheel center O. One end of the steering knuckle 20 is fastened to the shock absorber assembly 30, for example, by bolts, and the other end of the steering knuckle 20 is movably connected to one end of the lower control arm 40 by a ball joint. The other end of the lower control arm 40 is fastened to the subframe 50 by a bushing.

[0025] The shock absorber assembly 30 includes a spring 31 and a shock absorber 32. The spring 31 may include, for example, a coil spring, which is sleeved on the slide of the shock absorber 32. The spring 31 can be used to dampen impacts, while the shock absorber 32 can be used to suppress the oscillations when the spring 31 absorbs shocks and to absorb the energy of road impacts.

[0026] like Figure 1 As shown, in some embodiments, the longitudinal (i.e., along the longitudinal direction of the vehicle) distance L1 between the connection point of the steering knuckle 20 and the outer ball joint 11 of the steering tie rod of the steering gear 10 and the wheel center O is less than 170 mm, thereby ensuring that the connection point of the steering knuckle 20 and the outer ball joint 11 of the steering tie rod of the steering gear 10 is within the boundary of the 16-inch wheel rim, meeting the arrangement space requirements of the 16-inch wheel hub. In other embodiments, the longitudinal distance L1 between the connection point of the steering knuckle 20 and the outer ball joint 11 of the steering tie rod of the steering gear 10 and the wheel center O can be 158 mm.

[0027] Continue to refer to Figure 1 As shown, in some embodiments, the longitudinal distance L2 between the steering gear 10 and the wheel center O is less than 220 mm, thereby achieving the optimal Ackermann ratio and reducing rim wear. In other embodiments, the longitudinal distance L2 between the steering gear 10 and the wheel center O is greater than 180 mm, thereby preventing interference between the steering gear 10 and the front drive motor. In still other embodiments, the longitudinal distance L2 between the steering gear 10 and the wheel center O can be 202 mm, thereby achieving the optimal Ackermann ratio while also preventing interference between the steering gear 10 and the front drive motor.

[0028] In some embodiments, the ball pin of the lower control arm 40 in this application embodiment may be in 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 to the lower control arm 40 through the front ball pin 41 and the rear ball pin 42.

[0029] like Figure 2As shown, in some embodiments, the straight-line distance L3 between the center points of the front ball joint 41 and the rear ball joint 42 of the lower control arm 40 is greater than 75 mm. This satisfies the structural strength requirements for bearing a front axle load of 1600 kg or more. In other embodiments, the straight-line distance L3 between the center points of the front ball joint 41 and the rear ball joint 42 of the lower control arm 40 is less than 85 mm, thus achieving an optimal Ackermann ratio greater than 40% and satisfying a rack force of less than 20 kN. In still other embodiments, the straight-line distance L3 between the center points of the front ball joint 41 and the rear ball joint 42 of the lower control arm 40 can be 80.7 mm, thus satisfying both the structural strength requirements for bearing a front axle load of 1600 kg or more and achieving an optimal Ackermann ratio greater than 40% while satisfying a rack force of less than 20 kN. The MacPherson independent suspension 1 of this application embodiment can achieve a larger front axle load bandwidth with a smaller rack force.

[0030] In some embodiments, the MacPherson strut independent suspension 1 of this 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 via the stabilizer link 70. One end of the stabilizer link 70 is movably connected to the lower end of the shock absorber 32, for example, via a ball joint, and the other end of the stabilizer link 70 is movably connected to the stabilizer bar 60, for example, via a ball joint. The middle portion of the stabilizer bar 60 is connected to the subframe 50, for example, via a bushing 61. This improves the vehicle's stability performance.

[0031] The MacPherson independent suspension 1 of this application embodiment can cover 16-inch rims under the conditions of front-drive tram, front-mounted steering gear 10, and front axle load reaching 1600Kg, thus achieving compatibility with 16-inch rims.

[0032] The MacPherson independent suspension 1 in this embodiment avoids interference between the steering gear 10 and the front drive motor by reasonably arranging the longitudinal distance L2 between the steering gear 10 and the wheel center O.

[0033] In this embodiment of the MacPherson independent suspension 1, the lower control arm 40 and the steering knuckle 20 are connected by a double ball pin arrangement to meet the structural strength requirements for front axle loads of 1600Kg and 1900Kg or less, while also meeting the requirement that the steering Ackermann ratio is greater than 40%.

[0034] The MacPherson independent suspension 1 of this application embodiment achieves a smaller steering rack force, which can be less than 20KN, and the steering requirements can be met by using a conventional passenger car steering gear 10.

[0035] Another embodiment of this application provides a vehicle. The vehicle includes a MacPherson strut independent suspension 1 as described in the various embodiments above.

[0036] The vehicle in this embodiment has similar beneficial technical effects to the MacPherson independent suspension 1 described above, so it will not be repeated here.

[0037] The MacPherson strut independent suspension and vehicle provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the MacPherson strut independent suspension and vehicle in the embodiments of this application. The descriptions of the embodiments above are only for helping to understand the core ideas of this application and are not intended to limit this application. It should be noted that for those skilled in the art, several improvements and modifications can be made to this application without departing from the spirit and principles of this application, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A MacPherson strut independent suspension, characterized in that: The system includes a steering gear, a steering knuckle, a shock absorber assembly, a lower control arm, and a subframe. The steering gear drives the steering knuckle and is located in front of the wheel center. One end of the steering knuckle is fixedly connected to the shock absorber assembly, and the other end of the steering knuckle is movably connected to one end of the lower control arm via a ball joint. The other end of the lower control arm is fixedly connected to the subframe. The longitudinal distance between the connection point of the steering knuckle and the outer ball joint of the steering tie rod and the wheel center is less than 170 mm, and the longitudinal distance is along the longitudinal direction of the vehicle. The ball joint includes a front ball joint and a rear ball joint. The steering knuckle is movably connected to the lower control arm via the front ball joint and the rear ball joint. The straight-line distance between the center points of the front ball joint and the rear ball joint of the lower control arm is greater than 75 mm and less than 85 mm.

2. The MacPherson strut independent suspension as described in claim 1, characterized in that: The longitudinal distance between the steering gear and the wheel center is less than 220 mm.

3. The MacPherson strut independent suspension as described in claim 2, characterized in that: The longitudinal distance between the steering gear and the wheel center is greater than 180 mm.

4. The MacPherson strut independent suspension as described in claim 1, characterized in that: The shock absorber assembly includes a shock absorber and a spring sleeved on the slide of the shock absorber.

5. The MacPherson strut independent suspension as described in claim 4, characterized in that: It also includes a stabilizer bar and a stabilizer link, one end of which is movably connected to the lower end of the shock absorber, and the other end of which is movably connected to the stabilizer bar.

6. The MacPherson strut independent suspension as described in claim 5, characterized in that: The stabilizer bar is connected to the subframe at its center via a bushing.

7. A vehicle, characterized in that: Including the MacPherson strut independent suspension as described in any one of claims 1 to 6.

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