Highly integrated non-independent rear suspension

Abstract

The present invention discloses a highly integrated non-independent rear suspension, including a leaf spring assembly fixed to a subframe, with steering knuckles hinged at both ends of the leaf spring assembly, a toe rod assembly and a longitudinal rod assembly located on both sides of the leaf spring assembly are screwed to each of the steering knuckles, the other end of the front rod assembly is screwed to the subframe, and the other end of the longitudinal rod assembly is connected to the vehicle body; each of the steering knuckles is also screwed to a shock absorber assembly connected to the vehicle body. The beneficial effects of the present invention are mainly reflected in: simple structure, sophisticated design, the leaf spring assembly replaces the lower control assembly of the guide mechanism, the coil spring spring of the elastic mechanism and the stabilizer bar assembly in the traditional suspension structure, achieving high integration and light weight, and at the same time, it is easy to replace and repair, occupies little space, and is convenient for the arrangement of other systems.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile design and manufacture, and in particular to a highly integrated non-independent rear suspension. Background Art

[0002] As people's living standards continue to improve, cars have brought a lot of convenience to people's travel. At the same time, with the continuous updating of products in the automobile market, the requirements for products will also increase accordingly, especially in terms of economy, handling stability, and vehicle comfort.

[0003] While supporting the weight of the vehicle, the suspension buffers and absorbs the up and down vibration of the wheels caused by road impact, etc., and prevents the vibration from being directly transmitted to the vehicle body. This improves the comfort of the driver and passengers, protects the cargo, reduces the dynamic stress of the vehicle body, effectively reduces the dynamic imbalance in the wheel movement, thereby suppressing the vibration of the wheel and improving driving stability.

[0004] For example, Chinese patent number CN209257807U discloses a rear suspension assembly, which includes: a rear subframe assembly, a rear control arm assembly and a front control arm assembly installed on both sides of the rear subframe assembly, a longitudinal tie rod assembly, a right rear shock absorber, a left rear shock absorber and a rear wheel assembly, and the structure also includes: a hexagonal flange nut and a hexagonal flange surface guide screw, a longitudinal tie rod assembly symmetrically connected to both sides of the rear subframe assembly, the longitudinal tie rod assembly is located above the front control arm assembly and the rear control arm assembly, the right rear shock absorber is connected to the right side of the rear subframe assembly through the longitudinal tie rod assembly, the left rear shock absorber is connected to the left side of the rear subframe assembly through the longitudinal tie rod assembly, and the rear wheel assembly is connected to both sides of the rear subframe assembly through the front control arm assembly and the rear control arm assembly. In the above structure, the suspension structure is complex, the cost is high, the maintenance and transportation are inconvenient, and the space occupancy is large, which directly affects the layout of the engine and the steering system. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a highly integrated non-independent rear suspension.

[0006] The purpose of the present invention is achieved through the following technical solutions:

[0007] A highly integrated non-independent rear suspension comprises a leaf spring assembly fixed to a subframe, wherein both ends of the leaf spring assembly are hinged with steering knuckles, each of the steering knuckles is screwed with a toe rod assembly and a longitudinal rod assembly located on both sides of the leaf spring assembly, the other end of the front rod assembly is screwed with the subframe, and the other end of the longitudinal rod assembly is connected to the vehicle body; each of the steering knuckles is also screwed with a shock absorber assembly connected to the vehicle body.

[0008] Preferably, both ends of the leaf spring assembly are hinged to the steering knuckle through a hinge assembly, and the hinge assembly includes a bushing inner sleeve fixed to the steering knuckle and a bushing rubber bonded to the outer circumferential surface of the bushing inner tube, the outer side of the bushing rubber is covered with a bushing outer tube, and the bushing outer tube is fixed to the leaf spring assembly.

[0009] Preferably, a group of rectangular grooves arranged in a symmetrical structure are formed on the bushing rubber.

[0010] Preferably, a first sphere is fixedly provided on the steering knuckle and is integral with the steering knuckle. A first threaded hole is formed on the first sphere. A first bolt penetrates through the first threaded hole to lock the longitudinal tie rod assembly on the steering knuckle.

[0011] Preferably, a second sphere is fixedly provided on the steering knuckle and is integral with the steering knuckle. A second threaded hole is formed on the second sphere. A second bolt penetrates through the second threaded hole to lock the toe rod assembly on the steering knuckle.

[0012] Preferably, a third threaded hole and a fourth threaded hole are formed on the steering knuckle, and a third bolt and a fourth bolt respectively penetrate the third threaded hole and the fourth threaded hole to lock the shock absorber assembly on the steering knuckle.

[0013] Preferably, the shock absorber assembly is located between the toe rod assembly and the leaf spring assembly. Preferably, the shock absorber assembly is located directly above the leaf spring assembly.

[0014] Preferably, the leaf spring assembly includes a first part and a second part which is arranged on both sides of the first part and is integrally formed therewith, and the angle formed by the central axis of the second part and the central axis of the first part is 6-15°.

[0015] Preferably, the leaf spring assembly is a fiberglass member.

[0016] The beneficial effects of the present invention are mainly reflected in:

[0017] 1. With simple structure and exquisite design, the leaf spring assembly replaces the lower control assembly of the guide mechanism, the spiral spring of the elastic mechanism and the stabilizer bar assembly in the traditional suspension structure, achieving high integration and light weight. At the same time, it is easy to replace and repair, occupies little space, and is convenient for the layout of other systems.

[0018] 2. When the car is bumping on an uneven road, the toe-in rod assembly and the longitudinal rod assembly cooperate with each other to adjust the camber and toe-in changes of the rear wheels, and then cooperate with the shock absorber assembly to keep the car in a good state and run smoothly and flexibly, ensuring the safety of people and vehicles;

[0019] 3. The rectangular groove reserves the deformation space of the bushing rubber when it is subjected to external pressure, reduces the shrinkage of the bushing rubber and the internal stress generated when the rubber shrinks, and increases the service life of the rubber bushing;

[0020] 4. The shock absorber assembly is arranged between the leaf spring assembly and the toe rod assembly or just above the leaf spring, saving the layout space of the vehicle in the Y and Z directions. At the same time, the shock absorber assembly tends to be arranged in the Z direction, which improves the efficiency of the shock absorber in attenuating road excitation and further improves comfort;

[0021] 5. The leaf spring assembly uses glass fiber parts, which can greatly reduce the unsprung mass, save fuel consumption, achieve vehicle lightweighting, improve the handling stability of the vehicle, and extend the service life of the vehicle. At the same time, it can also improve the vehicle's NVH performance and further enhance comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The technical solution of the present invention is further described below in conjunction with the accompanying drawings:

[0023] Figure 1 : A stereogram of the present invention;

[0024] Figure 2 : Figure 1 A magnified view of part A;

[0025] Figure 3 : Schematic diagram of the leaf spring assembly and the hinge assembly in the present invention. DETAILED DESCRIPTION

[0026] The present invention will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments are not limited to the present invention, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all included in the protection scope of the present invention.

[0027] Without limiting the present invention, any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all included in the protection scope of the present invention.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0030] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0031] like Figures 1 to 3 As shown, the present invention discloses a highly integrated non-independent rear suspension, including a leaf spring assembly 1 fixed to a subframe, the two ends of the leaf spring assembly 1 are hinged to the steering knuckle 2 through an articulated assembly 6, the articulated assembly 6 includes a bushing inner sleeve 61 fixed to the steering knuckle 2 and a bushing rubber 62 bonded to the outer circumferential surface of the bushing inner tube 61, the outer side of the bushing rubber 62 is covered with a bushing outer tube 63, and the bushing outer tube 63 is fixed to the leaf spring assembly 1. To achieve the rotation of the steering knuckle 2 on the leaf spring assembly 1. In the above, a group of rectangular grooves (not shown in the figure) arranged in a symmetrical structure are opened on the bushing rubber 62, and the setting of the rectangular grooves reserves the deformation space of the bushing rubber when subjected to external pressure, reduces the shrinkage of the bushing rubber and the internal stress generated when the rubber shrinks, and maximizes the service life of the rubber bushing.

[0032] In the present invention, each of the steering knuckles 2 is fixedly provided with a first sphere 21 integral therewith, a first threaded hole is provided on the first sphere 21, and a first bolt 22 penetrates through the first threaded hole to lock the longitudinal tie rod assembly 4 on the steering knuckle 2. Each of the steering knuckles 2 is fixedly provided with a second sphere 23 integral therewith, a second threaded hole is provided on the second sphere 23, and a second bolt 24 penetrates through the second threaded hole to lock the toe rod assembly 3 on the steering knuckle 2. The other end of the toe rod assembly 3 is screwed to the subframe, and the other end of the longitudinal tie rod assembly 4 is connected to the vehicle body. Furthermore, the toe rod assembly 3 and the longitudinal tie rod assembly 4 are arranged on both sides of the leaf spring assembly 1, and are arranged diagonally. Of course, their positions can also be adjusted accordingly according to actual needs, which all fall within the protection scope of the present invention. When the car is driving on an uneven road, the toe-in rod assembly and the longitudinal rod assembly cooperate with each other to adjust the camber and toe-in changes of the rear wheels, and then cooperate with the shock absorber assembly to keep the car in a good condition, driving smoothly and turning flexibly, ensuring the safety of people and vehicles.

[0033] A third threaded hole and a fourth threaded hole are formed on each of the steering knuckles 2, and a third bolt 25 and a fourth bolt 26 respectively penetrate the third threaded hole and the fourth threaded hole to lock the shock absorber assembly 5 on the steering knuckle 2, and the other end of the shock absorber assembly 5 is screwed to the vehicle body. Of course, other connection methods can also be used, which all fall within the scope of protection of the present invention and will not be described in detail.

[0034] In this embodiment, the shock absorber assembly 5 is located between the toe rod assembly 3 and the leaf spring assembly 1, saving the layout space of the whole vehicle in the Y direction and the Z direction. In addition, the shock absorber assembly 5 is also located directly above the leaf spring assembly 1, which all belong to the protection scope of the present invention and will not be described in detail. The shock absorber assembly tends to be arranged in the Z direction, which improves the efficiency of the shock absorber in attenuating road excitation and further improves comfort. At the same time, the shock absorber assembly is arranged on the steering knuckle, which increases the layout space in the Y direction, so as to facilitate the arrangement of the mounting points of the subframe, engine and other components.

[0035] Furthermore, the leaf spring assembly 1 includes a first part 11 and a second part 12 disposed on both sides of the first part 11 and formed integrally therewith, and the central axis of the second part 12 forms an angle of 6 to 15° with the central axis of the first part 11, so as to facilitate the arrangement of the mounting points of the subframe and other components. In this embodiment, the leaf spring replaces the upper control arm assembly and the coil spring, and the Z-direction arrangement space is increased. At the same time, the leaf spring also plays the role of the stabilizer bar in the traditional suspension and replaces it, further reducing the arrangement of parts and reducing costs.

[0036] Preferably, the leaf spring assembly 1 is a glass fiber component. The leaf spring assembly uses a glass fiber component, which can greatly reduce the unsprung mass, save fuel consumption, achieve vehicle lightweighting, improve the handling stability of the vehicle, and extend the service life of the vehicle. At the same time, it can also improve the NVH performance of the vehicle and further enhance comfort.

[0037] The present invention adopts a leaf spring assembly to replace the lower control assembly, coil spring and stabilizer bar assembly in the traditional suspension, and also achieves the mechanism and function of the connecting rod and the elastic element, taking into account stability and comfort. In addition, it also has the guiding function required by the transverse tie rod in the traditional suspension. Therefore, a high degree of integration is achieved. The leaf spring assembly is also easy to replace and repair, occupies a small space, and is convenient for the layout of the engine and steering system.

[0038] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0039] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. Highly integrated non-independent rear suspension, characterized by: The invention comprises a leaf spring assembly (1) fixed to a sub-frame, wherein the two ends of the leaf spring assembly (1) are hinged with steering knuckles (2), and each of the steering knuckles (2) is screwed with a toe rod assembly (3) and a longitudinal rod assembly (4) located on both sides of the leaf spring assembly (1), the other end of the toe rod assembly (3) is screwed with the sub-frame, and the other end of the longitudinal rod assembly (4) is connected to the vehicle body; each of the steering knuckles (2) is also screwed with a shock absorber assembly (5) connected to the vehicle body; the steering knuckle (2) is fixed with a first sphere (21) integral with it, the first sphere (21) is provided with a first threaded hole, and a first bolt (22) penetrates the first threaded hole to lock the longitudinal rod assembly (4) on the steering knuckle (2); the steering knuckle (2) is fixed with a second sphere (23) integral with it, the second sphere (23) is provided with a second threaded hole, and a A second bolt (24) passes through the second threaded hole to lock the toe rod assembly (3) on the steering knuckle (2); a third threaded hole and a fourth threaded hole are provided on the steering knuckle (2); a third bolt (25) and a fourth bolt (26) respectively pass through the third threaded hole and the fourth threaded hole to lock the shock absorber assembly (5) on the steering knuckle (2); both ends of the leaf spring assembly (1) are hinged to the steering knuckle (2) through a hinge assembly (6); the hinge assembly (6) comprises a bushing inner tube (61) fixed to the steering knuckle (2) and a bushing rubber (62) bonded to the outer circumferential surface of the bushing inner tube (61); the outer side of the bushing rubber (62) is covered with a bushing outer tube (63); the bushing outer tube (63) is fixed to the leaf spring assembly (1); a group of rectangular grooves arranged in a symmetrical structure are provided on the bushing rubber (62).

2. The highly integrated non-independent rear suspension according to claim 1, characterized in that: The shock absorber assembly (5) is located between the toe rod assembly (3) and the leaf spring assembly (1).

3. The highly integrated non-independent rear suspension according to claim 1, characterized in that: The shock absorber assembly (5) is located directly above the leaf spring assembly (1).

4. The highly integrated non-independent rear suspension according to claim 1, characterized in that: The leaf spring assembly (1) comprises a first part (11) and a second part (12) arranged on both sides of the first part (11) and formed integrally therewith, wherein the angle formed by the central axis of the second part (12) and the central axis of the first part (11) is 6 to 15 degrees.

5. The highly integrated non-independent rear suspension according to claim 1, characterized in that: The leaf spring assembly (1) is a glass fiber component.

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