Suspension damping structure, suspension system and vehicle

Abstract

The application belongs to the technical field of automobile suspension, and particularly relates to a suspension damping structure, a suspension system and an automobile. In the suspension damping structure, the elastic rubber part is arranged between the first connecting assembly and the second connecting assembly. When the suspension damping structure is subjected to low-frequency vibration transmitted by the first connecting assembly or the second connecting assembly, the elastic diaphragm is displaced along with the deformation of the elastic rubber part, thereby enhancing the overall rigidity of the suspension damping structure and improving the damping effect under low-frequency vibration. When the suspension damping structure is subjected to high-frequency vibration, the rigidity of the elastic diaphragm is reduced along with the increase of the vibration frequency, so as to adapt to the vibration demand of a higher frequency, thereby effectively reducing the transmission of high-frequency vibration. Compared with the prior art, the suspension damping structure can provide more stable damping effect under vibration working conditions of different frequencies, and ensure that good vibration isolation performance can be achieved under low-frequency and high-frequency vibration.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of automobile suspensions, and particularly relates to a suspension damping structure, a suspension system and an automobile. BACKGROUND

[0002] As a vibration isolation element, the suspension damping structure is usually installed between an engine and a chassis to effectively isolate high-frequency and low-frequency vibrations. At present, the commonly used suspension damping structure is made of rubber material, but the mechanical properties of the rubber material are greatly affected by temperature, frequency and load changes, resulting in unstable performance under complex dynamic loads. Specifically, the rubber material can provide certain stiffness and damping at low frequency, but at high frequency, the stiffness and damping characteristics of the rubber will decrease with the change of frequency, making it difficult to achieve good damping effect under various working conditions. CONTENT OF THE UTILITY MODEL

[0003] One of the application purposes is to provide a suspension damping structure to effectively solve the problem of damping effect under low-frequency and high-frequency vibration working conditions.

[0004] Another application purpose of the application is to provide a suspension system, which comprises the above-mentioned suspension damping structure.

[0005] Still another application purpose of the application is to provide an automobile, which comprises the above-mentioned suspension system.

[0006] According to the embodiments of the application, the first aspect provides a suspension damping structure arranged between an engine and a chassis, which comprises:

[0007] an elastic rubber piece;

[0008] an elastic diaphragm arranged on the surface of the elastic rubber piece along a first direction, the elastic diaphragm moving with the vibration of the elastic rubber piece and providing a supporting force for the elastic rubber piece;

[0009] a first connecting assembly arranged on the upper side of the elastic rubber piece and used for connecting with the engine;

[0010] a second connecting assembly arranged on the lower side of the elastic rubber piece and used for connecting with the chassis.

[0011] In an embodiment, the shape of the elastic rubber piece is a spherical structure, and the elastic diaphragm is co-vulcanized with the elastic rubber piece.

[0012] In an embodiment, the elastic rubber piece is provided with the elastic diaphragm on one side close to the first connecting assembly and on one side close to the second connecting assembly in the first direction.

[0013] In an embodiment, the elastic diaphragm is arranged in an array on one side of the elastic rubber piece close to the first connecting assembly, and the number of the elastic diaphragm is not less than two; the elastic diaphragm is arranged in an array on one side of the elastic rubber piece close to the second connecting assembly, and the number of the elastic diaphragm is not less than two.

[0014] In an embodiment, the thickness of the elastic diaphragm is 0.5-2 mm, and the material of the elastic diaphragm is stainless steel.

[0015] In an embodiment, the first connecting assembly and the second connecting assembly each include a support plate and a connecting component, and the support plate is co-vulcanized with the elastic rubber piece.

[0016] In an embodiment, the material of the support plate is hot-rolled steel plate.

[0017] In an embodiment, the connecting component is a bolt, and the material of the connecting component is alloy structural steel.

[0018] According to the embodiments of the present application, a second aspect provides a suspension system, which includes the suspension damping structure.

[0019] According to the embodiments of the present application, a third aspect provides an automobile, which includes the suspension system.

[0020] In the suspension damping structure of the present application, the elastic rubber piece is arranged between the first connecting assembly and the second connecting assembly. When the suspension damping structure is subjected to low-frequency vibration transmitted by the first connecting assembly or the second connecting assembly, the elastic diaphragm is displaced along with the deformation of the elastic rubber piece, thereby enhancing the overall stiffness of the suspension damping structure and improving the damping effect under low-frequency vibration; when the suspension damping structure is subjected to high-frequency vibration, the stiffness of the elastic diaphragm is reduced along with the increase of the vibration frequency, so as to adapt to the vibration demand of higher frequency, thereby effectively reducing the transmission of high-frequency vibration. Compared with the prior art, the suspension damping structure of the present application can provide more stable damping effect under different frequency vibration conditions, and ensure that better vibration isolation performance can be achieved under low-frequency and high-frequency vibration. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 FIG. 1 is a structural schematic view of a suspension damping structure in an embodiment of the present application;

[0022] Figure 2 FIG. 2 is another direction schematic view of the suspension damping structure in the embodiment of the present application.

[0023] BRIEF DESCRIPTION OF DRAWINGS

[0024] 100, elastic rubber piece;

[0025] 200, elastic diaphragm;

[0026] 300, first connecting assembly; 310, support plate; 320, connecting component;

[0027] 400, second connecting assembly. DETAILED DESCRIPTION

[0028] In order to make the purposes, technical solutions and advantages of the present application clearer, the present application is further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not used to limit the present application.

[0029] It should be noted that the diagrams provided in the embodiments only schematically illustrate the basic concepts of the present application.

[0030] The structures, proportions, sizes, etc. shown in the drawings attached to the present specification are only used to understand and read the content disclosed in the present specification by those skilled in the art, and are not used to limit the limiting conditions that can be implemented by the present application. Any modification of structure, change of proportion relationship or adjustment of size, which does not affect the effects that can be produced by the present application and the purposes that can be achieved, should still fall within the scope of the technical content disclosed by the present application.

[0031] The orientations or positional relationships indicated by the terms such as "upper", "lower", "left", "right", "intermediate", "vertical", "horizontal", "inner", "outer", "radial", "circumferential", etc. in the present specification are based on the orientations or positional relationships shown in the drawings, and are only used to facilitate the description, and cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", etc. are only used for description purposes and cannot be understood as indicating or implying relative importance.

[0032] As described in the background, the suspension damping structure as a vibration isolation element is usually installed between the engine and the chassis for effectively isolating high-frequency and low-frequency vibrations. At present, the commonly used suspension damping structure is made of rubber material, but the mechanical properties of the rubber material are greatly affected by temperature, frequency and load changes, resulting in unstable performance under complex dynamic load. Specifically, the rubber material can provide certain stiffness and damping at low frequency working conditions, but at high frequency working conditions, the stiffness and damping characteristics of the rubber will decrease with the change of frequency, and it is difficult to achieve good damping effect under various working conditions. Therefore, the researchers of the present application propose a suspension damping structure to effectively solve the problem of damping effect under low-frequency vibration and high-frequency vibration working conditions.

[0033] As Figure 1 shown, Figure 1 is a structural schematic diagram of the suspension damping structure in an embodiment of the present application. The suspension damping structure comprises: an elastic rubber piece 100, an elastic diaphragm 200, a first connecting assembly 300 and a second connecting assembly 400, wherein the elastic rubber piece 100 and the elastic diaphragm 200 cooperate to effectively isolate and damp vibrations through joint deformation; the elastic rubber piece 100 provides elastic support and dispersion of acting force function; the elastic diaphragm 200 changes with the deformation of the elastic rubber piece 100, increases the system stiffness under low-frequency vibration, and reduces the system stiffness under high-frequency vibration, thereby improving the damping effect. The first connecting assembly 300 is arranged on the upper side of the elastic rubber piece 100 for connecting with the engine and transmitting vibration load; the second connecting assembly 400 is arranged on the lower side of the elastic rubber piece 100 for connecting with the chassis and transmitting vibration load.

[0034] Specifically, the suspension damping structure is arranged between the engine and the chassis, and the elastic diaphragm 200 is arranged on the surface of the elastic rubber piece 100 along a first direction, wherein the first direction can refer to the direction indicated by arrow a in Figure 1 , the elastic diaphragm 200 moves with the vibration of the elastic rubber piece 100 and provides supporting force for the elastic rubber piece 100; the first connecting assembly 300 is arranged on the upper side of the elastic rubber piece 100 for connecting with the engine; the second connecting assembly 400 is arranged on the lower side of the elastic rubber piece 100 for connecting with the chassis.

[0035] In the embodiment, when the suspension damping structure is arranged in the automobile, the elastic rubber piece 100 and the elastic diaphragm 200 are located between the first connecting assembly 300 and the second connecting assembly 400. The elastic diaphragm 200 is arranged on the surface of the elastic rubber piece 100 along the first direction, and the elastic diaphragm 200 can generate corresponding movement with the vibration of the elastic rubber piece 100. When the suspension damping structure is subjected to low-frequency vibration transmitted by the first connecting assembly 300 or the second connecting assembly 400, the elastic diaphragm 200 is displaced with the deformation of the elastic rubber piece 100, thereby enhancing the overall stiffness of the suspension damping structure and improving the damping effect under low-frequency vibration; when the suspension damping structure is subjected to high-frequency vibration, the stiffness of the elastic diaphragm 200 decreases with the increase of the vibration frequency, so as to adapt to the vibration demand of higher frequency, thereby effectively reducing the transmission of high-frequency vibration. Compared with the prior art, the suspension damping structure of the present application can provide more stable damping effect under vibration working conditions of different frequencies, and ensure that better vibration isolation performance can be achieved under low-frequency and high-frequency vibration.

[0036] In an embodiment, referring to Figure 1 As shown in the figure, the shape of the elastic rubber piece 100 is a spherical structure, and the elastic diaphragm 200 is co-vulcanized with the elastic rubber piece 100.

[0037] In the embodiment, the elastic rubber piece 100 in the suspension damping structure adopts a spherical design, and the spherical structure enables the elastic rubber piece 100 to uniformly distribute the acting force when subjected to external vibration, thereby improving the overall damping effect. Since the elastic diaphragm 200 is co-formed with the elastic rubber piece 100 through a vulcanization process, this process ensures firm combination between the two, so that the elastic rubber piece 100 and the elastic diaphragm 200 can cooperate in the working process. When the suspension damping structure is subjected to low-frequency vibration, the deformation of the elastic diaphragm 200 is synchronized with the deformation of the elastic rubber piece 100, thereby effectively enhancing the damping performance under low-frequency vibration working conditions. At the same time, under high-frequency vibration working conditions, the stiffness and deformation characteristics of the elastic diaphragm 200 can be adjusted according to the change of the vibration frequency, so as to adapt to the vibration demand of higher frequency, thereby reducing the energy loss and performance attenuation problems that may be caused by material loosening or unstable interface. Specifically, the elastic diaphragm 200 can effectively absorb and consume high-frequency vibration energy, rather than simply transmit the vibration, thereby reducing the transmission efficiency of the vibration and solving the problem of reduced damping performance of traditional rubber materials under high-frequency working conditions due to insufficient stiffness.

[0038] In an embodiment, referring to Figure 1 As shown in the figure, the side of the elastic rubber piece 100 close to the first connecting assembly 300 and the side of the elastic rubber piece 100 close to the second connecting assembly 400 are both provided with the elastic diaphragm 200 along the first direction.

[0039] In the embodiment, the two sides of the elastic rubber piece 100 in the suspension damping structure, i.e., the side close to the first connecting assembly 300 and the side close to the second connecting assembly 400, are provided with elastic diaphragms 200 in the first direction. This design makes the elastic diaphragms 200 work synchronously at the two end faces of the elastic rubber piece 100 when the suspension damping structure is subjected to vibration, thereby realizing uniformity of the damping effect. Specifically, the symmetrical arrangement of the elastic diaphragms 200 at the two ends ensures uniform stress of the suspension damping structure during vibration, avoids local stress concentration problems caused by uneven stress, and improves the stability of the structure. The synchronous deformation of the elastic diaphragms 200 at the two ends enhances the damping performance of the suspension damping structure under low-frequency vibration conditions, improves the overall stiffness and damping capacity through the synergistic effect of the deformation of the elastic rubber piece 100, and effectively suppresses the transmission of low-frequency vibration. Under high-frequency vibration conditions, the synchronous effect of the elastic diaphragms 200 enables them to quickly adapt to changes in vibration frequency, adjust the stiffness and deformation characteristics, effectively absorb and consume high-frequency vibration energy, reduce the transmission of high-frequency vibration to the chassis and vehicle body, and improve the damping performance of the suspension damping structure.

[0040] In an embodiment, referring to Figure 1 As shown in the figure, the elastic diaphragms 200 are arranged in an array on the side of the elastic rubber piece 100 close to the first connecting assembly 300, and the number is not less than two; the elastic diaphragms 200 are arranged in an array on the side of the elastic rubber piece 100 close to the second connecting assembly 400, and the number is not less than two.

[0041] In the embodiment, the elastic diaphragms 200 in the suspension damping structure are arranged in an array on the side of the elastic rubber piece 100 close to the first connecting assembly 300, and the number is not less than two; similarly, the elastic diaphragms 200 are also arranged in an array on the side of the elastic rubber piece 100 close to the second connecting assembly 400, and the number is not less than two. This design ensures that the elastic diaphragms 200 can produce uniform mechanical action on both sides of the elastic rubber piece 100 when the suspension damping structure is subjected to vibration. Through the array arrangement, on the one hand, the working surface of the elastic diaphragm 200 can be effectively increased, thereby improving the overall damping performance; on the other hand, the array arrangement improves the uniformity of the damping effect, ensures that the mechanical response of the elastic diaphragm 200 is symmetrically distributed during vibration, and avoids the problem of structural instability caused by uneven local stress.

[0042] In an embodiment, the thickness of the elastic diaphragm 200 is 0.5mm-2mm, and the material of the elastic diaphragm is stainless steel.

[0043] In this embodiment, the thickness of the elastic diaphragm 200 in the suspension damping structure is set to 0.5-2 mm. This thickness range can effectively balance the stiffness and flexibility of the elastic diaphragm 200, thereby optimizing the damping effect at different vibration frequencies. Specifically, in the low-frequency vibration working condition, the thickness of the elastic diaphragm 200 can provide sufficient stiffness to resist deformation caused by vibration, thereby enhancing the overall stiffness of the suspension damping structure and improving the damping effect in the low-frequency vibration working condition. In the high-frequency vibration working condition, the elastic diaphragm 200 has sufficient flexibility in this thickness range, which can effectively absorb and dissipate high-frequency vibration energy, reducing the transmission of high-frequency vibration to the chassis and vehicle body, thereby improving the damping performance of the suspension damping structure.

[0044] If the thickness of the elastic diaphragm 200 is too thin, it may not have sufficient stiffness, thereby failing to effectively improve the damping effect in the low-frequency vibration, and even may not be able to effectively absorb and weaken high-frequency vibration. If the thickness is too thick, the flexibility of the elastic diaphragm 200 may be reduced, which may not effectively dissipate and absorb vibration energy in the high-frequency vibration working condition, thereby affecting the damping performance of the suspension damping structure at different frequencies.

[0045] In an embodiment, referring to Figure 2 As shown in the figure, the first connecting assembly 300 and the second connecting assembly 400 each include a support plate 310 and a connecting component 320, and the support plate 310 is co-vulcanized with the elastic rubber part 100.

[0046] In this embodiment, the first connecting assembly 300 and the second connecting assembly 400 of the suspension damping structure each include a support plate 310 and a connecting component 320. The connecting component 320 is used to connect the suspension damping structure with the engine or the chassis, ensuring effective force transmission and connection reliability. The support plate 310 is co-molded with the elastic rubber part 100 through a vulcanization process, ensuring a firm bond between the support plate 310 and the elastic rubber part 100, thereby improving the overall strength and stability of the entire suspension damping structure.

[0047] In an embodiment, the material of the support plate 310 is hot-rolled steel plate.

[0048] In this embodiment, the support plate 310 of the first connecting assembly 300 and the second connecting assembly 400 of the suspension damping structure is made of hot-rolled steel plate. Hot-rolled steel plate has high strength and stiffness, which can effectively withstand the vibration and load transmitted between the engine and the chassis, ensuring the stability and reliability of the suspension damping structure under complex working conditions. At the same time, the material properties of hot-rolled steel plate enable it to maintain good mechanical properties under high temperature and high pressure environments, thereby improving the adaptability and durability of the suspension damping structure under different environmental conditions.

[0049] In an embodiment, the connecting component 320 is a bolt, and the material of the connecting component 320 is alloy structural steel.

[0050] In the embodiment, the connecting component 320 in the first connecting assembly 300 and the second connecting assembly 400 of the suspension damping structure is designed as a bolt, and the material of the bolt is selected as alloy structural steel, for example, 40Cr. Alloy structural steel has high strength, high toughness, and good fatigue resistance, and can effectively bear the vibration and dynamic load transmitted between the engine and the chassis, ensuring the reliability and stability of the connecting component 320 during long-term use. The bolt connection mode provides detachability and maintainability, facilitating the disassembly and maintenance of the suspension damping structure when needed. The bolt made of alloy structural steel not only ensures the fastening of the connection, but also effectively prevents loosening or fatigue fracture caused by vibration, thereby improving the safety and durability of the suspension damping structure under different working conditions.

[0051] The application also provides a suspension system, wherein the suspension system comprises the suspension damping structure.

[0052] The application also provides an automobile, wherein the automobile comprises the suspension system.

[0053] The technical features of the above embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above embodiments are described, but as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the application.

[0054] The above embodiments only express several implementation manners of the application, and the description is specific and detailed, but it should not be understood as a limitation on the scope of the utility model patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the application, a number of modifications and improvements can be made, which are all within the protection scope of the application. Therefore, the protection scope of the patent of the application should be subject to the appended claims.

Claims

1. A suspension damping structure, wherein the suspension damping structure is disposed between the engine and the chassis, characterized in that: The suspension damping structure includes: Elastic rubber component (100); Elastic diaphragms (200) are spaced apart on the surface of the elastic rubber member (100) along a first direction. The elastic diaphragms (200) move with the vibration of the elastic rubber member (100) and provide a supporting force for the elastic rubber member (100). A first connecting assembly (300) is disposed on the upper side of the elastic rubber member (100) for connecting to the engine; The second connecting component (400) is disposed on the underside of the elastic rubber component (100) and is used to connect to the chassis.

2. The suspension vibration damping structure according to claim 1, characterized in that: The elastic rubber component (100) has a spherical shape, and the elastic diaphragm (200) and the elastic rubber component (100) are vulcanized together.

3. The suspension vibration damping structure according to claim 2, characterized in that: The elastic diaphragm (200) is provided along the first direction on both the side of the elastic rubber member (100) near the first connecting assembly (300) and the side of the elastic rubber member (100) near the second connecting assembly (400).

4. The suspension vibration damping structure according to claim 3, characterized in that: The elastic diaphragms (200) are arranged in an array on the side of the elastic rubber member (100) near the first connecting component (300), and the number of diaphragms (200) is not less than two; the elastic diaphragms (200) are arranged in an array on the side of the elastic rubber member (100) near the second connecting component (400), and the number of diaphragms (200) is not less than two.

5. The suspension vibration damping structure according to claim 1, characterized in that: The thickness of the elastic diaphragm (200) is 0.5mm-2mm, and the material of the elastic diaphragm (200) is stainless steel.

6. The suspension vibration damping structure according to claim 1, characterized in that: Both the first connecting assembly (300) and the second connecting assembly (400) include a support plate (310) and a connecting component (320), wherein the support plate (310) and the elastic rubber component (100) are vulcanized together.

7. The suspension vibration damping structure according to claim 6, characterized in that: The support plate (310) is made of hot-rolled steel plate.

8. The suspension vibration damping structure according to claim 6, characterized in that: The connecting component (320) is a bolt, and the material of the connecting component (320) is alloy structural steel.

9. A suspension system, characterized in that: The suspension system includes the suspension damping structure as described in any one of claims 1-8.

10. A car, characterized in that: The vehicle includes the suspension system as described in claim 9.

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