CN221120739U - Air damping suspension structure and car - Google Patents

Abstract

The application relates to an air damping suspension structure and an automobile. The elastic damping ring is provided with an inner cavity, the air damping suspension structure is provided with an exhaust hole communicated with the inner cavity and the outer space, when the inner framework and the first support eccentrically move relative to each other along the radial direction of the air damping suspension structure, the elastic damping ring can be pressed and deformed to compress the inner cavity, air in the inner cavity can be exhausted to the outer space through the exhaust hole, and the flow area of the exhaust hole is smaller than that of the inner cavity. The air damping suspension structure and the automobile provided by the application solve the problems that the aftershock solution can cause deterioration of the NVH working condition of the whole automobile or can obviously improve the manufacturing and later maintenance cost of the electric automobile.

Description

Air damping suspension structure and car

Technical Field

The application relates to the technical field of suspension structures, in particular to an air damping suspension structure and an automobile.

Background

The motor power and the torque of the electric vehicle are very high, and the transient impact on the suspension of the electric vehicle is very high under the tip-in/out (fast accelerator stepping/accelerator receiving) working condition, so that the motor is easy to float and a series of aftershock problems are generated.

In the prior art, a designer generally adopts a large-rigidity suspension to inhibit the aftershock problem of a motor, but the large-rigidity suspension can reduce the vibration isolation performance of the suspension, and has certain deterioration on the NVH working condition (noise, vibration and sound vibration roughness) of the whole vehicle. In addition, the hydraulic damping suspension has a good inhibition effect on inhibiting motor aftershock, but the service life of a damping system in the hydraulic damping suspension is lower, the cost is higher, and the manufacturing and later maintenance cost of the electric vehicle is greatly improved.

Disclosure of utility model

Based on this, it is necessary to provide an air damping suspension structure and an automobile, so as to solve the problem that the existing aftershock solution can bring about deterioration of the NVH working condition of the whole automobile or can significantly increase the manufacturing and later maintenance costs of the electric automobile.

The application provides an air damping suspension structure which comprises an inner framework, an elastic damping ring, a first support and a second support, wherein the elastic damping ring is sleeved on the outer peripheral side of the inner framework, the first support is sleeved on the outer peripheral side of the elastic damping ring, and the second support is connected with the end part of the inner framework. The elastic damping ring is provided with an inner cavity, the air damping suspension structure is provided with an exhaust hole communicated with the inner cavity and the outer space, when the inner framework and the first support eccentrically move relative to each other along the radial direction of the air damping suspension structure, the elastic damping ring can be pressed and deformed to compress the inner cavity, air in the inner cavity can be exhausted to the outer space through the exhaust hole, and the flow area of the exhaust hole is smaller than that of the inner cavity.

In one embodiment, the air damping suspension structure further comprises an outer skeleton, the outer skeleton is sleeved on the outer peripheral side of the elastic damping ring, and the first support is sleeved on the outer peripheral side of the outer skeleton.

In one embodiment, the elastic damping ring is provided with a groove with an opening facing the first support, the outer skeleton is provided with a through hole corresponding to the notch of the groove, the inner walls of the groove, the through hole and the first support are enclosed to form an inner cavity, the exhaust hole is arranged between the outer skeleton and the first support, and the exhaust hole is communicated with the groove through the through hole.

In one embodiment, the inner cavity is provided with a limiting block, the limiting block is arranged along the radial direction of the air damping suspension structure, and when the compression amount of the inner cavity along the radial direction of the air damping suspension structure reaches a preset compression amount, the limiting block can be stopped at two ends of the inner cavity along the radial direction of the air damping suspension structure so as to prevent the inner cavity from being continuously compressed.

In one embodiment, one end of the limiting block is connected to the elastic damping ring, and the other end extends towards the direction approaching the first bracket.

In one embodiment, the stopper and the elastic damping ring are of an integrally formed structure.

In one embodiment, the elastic damping ring is provided with a plurality of inner cavities in the circumferential direction, and the plurality of inner cavities are rotationally symmetrical about the axis of the elastic damping ring.

In one embodiment, the number of the inner cavities is two, the two inner cavities are distributed in 180-degree rotation symmetry, and the exhaust holes corresponding to the two inner cavities extend towards opposite directions respectively and are communicated with the external spaces at two sides of the elastic damping ring respectively.

In one embodiment, the elastic damping ring is made of rubber, silica gel or elastic plastic.

The application also provides an automobile comprising the air damping suspension structure according to any one of the embodiments.

Compared with the prior art, the air damping suspension structure and the automobile provided by the application have the advantages that the flow area of the inner cavity is larger, so that the diameter flow of the air discharged from the inner cavity is larger than that in the exhaust hole, the air flowing into the exhaust hole is blocked, at the moment, the speed of the air discharged from the inner cavity is smaller than that of the compressed inner cavity, and the air can generate a certain damping force on the inner wall of the inner cavity in turn so as to reduce the compressed inner cavity, so that the instantaneous impact action of the air damping suspension structure is slowly released, and the aftershock caused by motor movement is avoided.

And because the elastic damping ring has better elastic deformation capability, compared with the large-rigidity suspension, the air damping suspension structure provided with the elastic damping ring can obviously improve the NVH working condition of the whole vehicle.

Further, the solution of providing an elastic damping ring is obviously simpler with respect to a hydraulic damping suspension, and therefore, the manufacturing and maintenance costs of the air damping suspension structure provided by the application can be significantly reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments or the conventional techniques of the present application, the drawings required for the descriptions of the embodiments or the conventional techniques will be briefly described below, and it is apparent that the drawings in the following descriptions are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.

FIG. 1 is a schematic diagram of an air damping suspension structure according to an embodiment of the present application;

FIG. 2 is an exploded view of an air damping mount structure according to one embodiment of the present application;

Fig. 3 is a cross-sectional view of an air damping suspension structure according to an embodiment of the present application.

Reference numerals: 100. an inner skeleton; 200. an elastic damping ring; 210. an inner cavity; 220. a groove; 230. a limiting block; 240. buffering holes; 250. a limit groove; 300. a first bracket; 400. a second bracket; 500. an outer skeleton; 510. an exhaust hole; 520. a through hole; 530. and a limit protrusion.

Detailed Description

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

The motor power and the torque of the electric vehicle are very high, and the transient impact on the suspension of the electric vehicle is very high under the tip-in/out (fast accelerator stepping/accelerator receiving) working condition, so that the motor is easy to float and a series of aftershock problems are generated.

In the prior art, a designer generally adopts a large-rigidity suspension to inhibit the aftershock problem of a motor, but the large-rigidity suspension can reduce the vibration isolation performance of the suspension, and has certain deterioration on the NVH working condition (noise, vibration and sound vibration roughness) of the whole vehicle. In addition, the hydraulic damping suspension has a good inhibition effect on inhibiting motor aftershock, but the service life of a damping system in the hydraulic damping suspension is lower, the cost is higher, and the manufacturing and later maintenance cost of the electric vehicle is greatly improved.

Referring to fig. 1-3, in order to solve the problem that the existing aftershock solution may deteriorate the NVH condition of the whole vehicle or may significantly increase the manufacturing and later maintenance costs of the electric vehicle, the present application provides an air damping suspension structure and an automobile, wherein the air damping suspension structure is used for connecting a motor (not shown) and a subframe (not shown), the air damping suspension structure comprises an inner frame 100, an elastic damping ring 200, a first bracket 300 and a second bracket 400, the elastic damping ring 200 is sleeved on the outer peripheral side of the inner frame 100, the first bracket 300 is sleeved on the outer peripheral side of the elastic damping ring 200, and the second bracket 400 is connected to the end of the inner frame 100. In the present embodiment, the first bracket 300 is used to connect to a motor, the second bracket 400 is used to connect to a subframe, but not limited thereto, and in other embodiments, the first bracket 300 may be used to connect to a subframe, and the second bracket 400 may be used to connect to a motor.

Further, the elastic damping ring 200 is provided with an inner cavity 210, and the air damping suspension structure is provided with an exhaust hole 510 communicating the inner cavity 210 with an external space, and when the inner frame 100 and the first bracket 300 are relatively eccentrically moved in a radial direction of the air damping suspension structure, the elastic damping ring 200 can be compressively deformed to compress the inner cavity 210 and allow air of the inner cavity 210 to be exhausted to the external space through the exhaust hole 510. And, the flow area of the exhaust hole 510 is smaller than that of the inner cavity 210.

Because the flow area of the inner cavity 210 is larger, the diameter of the air discharging inner cavity 210 is larger than the diameter of the air discharging hole 510, which can prevent the air from flowing into the air discharging hole 510, at this time, the speed of the air discharging inner cavity 210 is smaller than the compressed speed of the inner cavity 210, so that the air can generate a certain damping force on the inner wall of the inner cavity 210 in turn to reduce the compressed speed of the inner cavity 210, thereby slowly releasing the instant impact action of the air damping suspension structure and further avoiding the aftershock caused by the motor play.

In addition, since the elastic damping ring 200 has better elastic deformation capability, the air damping suspension structure provided with the elastic damping ring 200 can remarkably improve the NVH working condition of the whole vehicle relative to the large-rigidity suspension.

Further, the solution of providing the elastic damping ring 200 is obviously simpler with respect to the hydraulic damping suspension, and therefore, the manufacturing and maintenance costs of the air damping suspension structure provided by the present application can be significantly reduced.

In an embodiment, the material of the elastic damping ring 200 is rubber, but not limited thereto, and in other embodiments, the material of the elastic damping ring 200 may be silica gel, elastic plastic or other polymer elastic materials.

In this way, the processing cost of the elastic damping ring 200 can be greatly reduced.

In an embodiment, the elastic damping ring 200 is provided with a plurality of inner cavities 210 in the circumferential direction, and the plurality of inner cavities 210 are rotationally symmetrical about the axis of the elastic damping ring 200.

Thus, the elastic damping ring 200 can generate damping effect after being stressed everywhere.

Specifically, in one embodiment, the number of the inner cavities 210 is two, the two inner cavities 210 are rotationally symmetrically distributed at 180 °, and the two air vents 510 extend toward opposite directions respectively and are respectively communicated with the external spaces at two sides of the elastic damping ring 200.

Thus, the stress balance of the elastic damping ring 200 is facilitated, and the elastic damping ring 200 is prevented from being biased due to the fact that one side of the elastic damping ring 200 is subjected to excessive damping force.

More specifically, in one embodiment, the vent 510 extends in a radial direction of the air damping suspension structure.

However, in other embodiments, the air vent 510 may be disposed at an angle with respect to the radial direction of the air damping suspension structure, which is not illustrated herein.

In an embodiment, as shown in fig. 2 and 3, the air damping suspension structure further includes an outer frame 500, the outer frame 500 is sleeved on the outer peripheral side of the elastic damping ring 200, and the first bracket 300 is sleeved on the outer peripheral side of the outer frame 500.

It should be noted that, the outer frame 500 is made of a rigid material, so that by providing the outer frame 500, the elastic damping ring 200 can be stressed as a whole, and the deformation resistance of the elastic damping ring 200 is improved.

Further, in an embodiment, the exoskeleton 500 is interference-fitted with the first bracket 300, so that the connection strength of the exoskeleton 500 and the first bracket 300 can be significantly improved.

In an embodiment, as shown in fig. 2 and 3, the elastic damping ring 200 is provided with a groove 220 that is opened toward the first bracket 300, and the outer skeleton 500 is provided with a through hole 520 corresponding to the notch of the groove 220, and the inner walls of the groove 220, the through hole 520 and the first bracket 300 enclose an inner cavity 210. The air discharge hole 510 is provided between the outer frame 500 and the first bracket 300, and the air discharge hole 510 communicates with the recess 220 through the through hole 520.

In this way, in the process of deformation of the elastic damping ring 200, the air vent 510 cannot shrink due to deformation of the elastic damping ring 200, that is, the air vent 510 is disposed between the outer frame 500 and the first bracket 300, which is beneficial to avoiding the air vent 510 from being compressed to cause the air to be unable to normally exit the inner cavity 210.

Specifically, the air vent 510 is in a groove shape, and the air vent 510 is disposed on the outer frame 500, and a notch of the air vent 510 faces the first bracket 300.

However, in other embodiments, the vent 510 may be disposed on the first bracket 300 and the outer frame 500, and the notch of the vent 510 faces the elastic damping ring 200, which is not illustrated herein.

In order to prevent the elastic damping ring 200 from being excessively compressed, in an embodiment, as shown in fig. 2 and 3, the inner cavity 210 is provided with a limiting block 230, the limiting block 230 is disposed along the radial direction of the air damping suspension structure, and when the compression amount of the inner cavity 210 along the radial direction of the air damping suspension structure reaches a preset compression amount, the limiting block 230 can stop at two ends of the inner cavity 210 along the radial direction of the air damping suspension structure so as to prevent the inner cavity 210 from being continuously compressed.

In one embodiment, the predetermined amount of compression ranges from 5% to 70%, preferably from 20% to 50%.

Specifically, in an embodiment, one end of the stopper 230 is connected to the elastic damping ring 200, and the other end extends toward a direction approaching the first bracket 300.

However, in other embodiments, the stopper 230 may be further connected to the first bracket 300.

Further, in an embodiment, the stopper 230 and the elastic damping ring 200 are integrally formed.

Thus, the processing difficulty of the limiting block 230 is greatly reduced.

In an embodiment, as shown in fig. 2 and 3, the elastic damping ring 200 is further provided with a buffering hole 240 penetrating itself in a radial direction, so that when the elastic damping ring 200 is pressed, the buffering hole 240 can absorb kinetic energy through deformation of itself.

Further, in an embodiment, as shown in fig. 2 and 3, a limiting groove 250 is formed on an outer side surface of the elastic damping ring 200 at the buffer hole 240, a limiting protrusion 530 is formed on an inner wall of the exoskeleton 500 corresponding to the limiting groove 250, and the limiting protrusion 530 can be clamped in the limiting groove 250 to prevent the exoskeleton 500 from rotating relative to the elastic damping ring 200.

Further, the limiting protrusion 530 is provided with a plurality of hollowed holes, so as to reduce the weight of the whole exoskeleton 500.

The application also provides an automobile comprising the air damping suspension structure according to any one of the embodiments.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of the application should be determined from the following claims.

Claims (10)

1. The air damping suspension structure is characterized by comprising an inner framework (100), an elastic damping ring (200), a first support (300) and a second support (400), wherein the elastic damping ring (200) is sleeved on the outer peripheral side of the inner framework (100), the first support (300) is sleeved on the outer peripheral side of the elastic damping ring (200), and the second support (400) is connected to the end part of the inner framework (100);

The elastic damping ring (200) is provided with an inner cavity (210), the air damping suspension structure is provided with an exhaust hole (510) communicated with the inner cavity (210) and an external space, when the inner framework (100) and the first bracket (300) move eccentrically relative to each other along the radial direction of the air damping suspension structure, the elastic damping ring (200) can be pressed and deformed, so that the inner cavity (210) is compressed, and air in the inner cavity (210) can be exhausted to the external space through the exhaust hole (510), and the flow area of the exhaust hole (510) is smaller than that of the inner cavity (210).

2. The air damping suspension structure according to claim 1, further comprising an outer frame (500), wherein the outer frame (500) is sleeved on the outer peripheral side of the elastic damping ring (200), and the first bracket (300) is sleeved on the outer peripheral side of the outer frame (500).

3. The air damping suspension structure according to claim 2, wherein the elastic damping ring (200) is provided with a groove (220) with an opening facing the first bracket (300), the notch of the outer frame (500) corresponding to the groove (220) is provided with a through hole (520), the inner walls of the groove (220), the through hole (520) and the first bracket (300) are enclosed to form the inner cavity (210), the air exhaust hole (510) is arranged between the outer frame (500) and the first bracket (300), and the air exhaust hole (510) is communicated with the groove (220) through the through hole (520).

4. The air damping suspension structure according to claim 1, wherein the inner cavity (210) is provided with a limiting block (230), the limiting block (230) is arranged along the radial direction of the air damping suspension structure, and when the compression amount of the inner cavity (210) along the radial direction of the air damping suspension structure reaches a preset compression amount, the limiting block (230) can stop at two ends of the inner cavity (210) along the radial direction of the air damping suspension structure so as to prevent the inner cavity (210) from being continuously compressed.

5. The air damping suspension structure according to claim 4, wherein the stopper (230) has one end connected to the elastic damping ring (200) and the other end extending toward a direction approaching the first bracket (300).

6. The air damping suspension structure of claim 5, wherein the stopper (230) and the elastic damping ring (200) are an integrally formed structure.

7. The air damping suspension structure according to claim 1, wherein a plurality of inner cavities (210) are provided in a circumferential direction of the elastic damping ring (200), and the plurality of inner cavities (210) are rotationally symmetrical about an axis of the elastic damping ring (200).

8. The air damping suspension structure according to claim 7, wherein the number of the inner cavities (210) is two, the two inner cavities (210) are rotationally symmetrically distributed at 180 °, and the exhaust holes (510) corresponding to the two inner cavities (210) extend in opposite directions respectively and are respectively communicated with the external spaces at two sides of the elastic damping ring (200).

9. The air damping suspension structure according to claim 1, wherein the elastic damping ring (200) is made of rubber, silicone or elastic plastic.

10. An automobile comprising an air damping suspension structure according to any one of claims 1-9.