Vehicle suspension and vehicle

Abstract

The utility model discloses a vehicle suspension and a vehicle, the vehicle suspension comprises a leather cup, the leather cup defines a first cavity, and a fluid damping medium is arranged in the first cavity; the main spring assembly is used for transmitting vibration; the elastic film and the main spring assembly jointly define a second cavity, and the second cavity communicates with the first cavity; the side, away from the second cavity, of the elastic film is further provided with a weakening cavity, and the pressure intensity of the weakening cavity is smaller than that of the second cavity so as to weaken the elastic film. According to the utility model, the weakening cavity is arranged, and the pressure intensity in the weakening cavity is smaller than that in the second cavity, so that the elastic film is easier to deform and can be elastically deformed when the amplitude is smaller, thereby improving the sensitivity, giving full play to the vibration reduction effect, and under the same vibration condition, the variation of the elastic film is larger, and the vibration reduction effect is better. And the vibration attenuation effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, in particular to a suspension of a vehicle and a vehicle. Background Art

[0002] In the related art, the engine hydraulic mount is a support and vibration reduction device for the vehicle engine. The engine hydraulic mount is located between the engine and the chassis, and uses hydraulic fluid to absorb and attenuate the vibration and impact generated when the engine is running. The mount is usually provided with a hydraulic chamber, in which there is liquid, and the liquid flows to absorb and attenuate the vibration energy. A decoupling membrane is also provided in the hydraulic chamber. When the vibration amplitude is small, the decoupling membrane acts to slow down the vibration. However, the decoupling membrane reacts slowly. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a suspension of a vehicle, which improves the sensitivity.

[0004] The suspension of a vehicle according to an embodiment of the utility model includes: a leather cup, which defines a first cavity, in which a fluid damping medium is arranged; a main spring assembly, which is used to transmit vibration; an elastic membrane, which together with the main spring assembly defines a second cavity, and the second cavity is connected to the first cavity; wherein a weakened cavity is also provided on the side of the elastic membrane facing away from the second cavity, and the pressure of the weakened cavity is lower than the pressure of the second cavity, so as to weaken the elastic membrane.

[0005] According to the suspension of the vehicle in the embodiment of the utility model, a weakening cavity is provided, and the pressure in the weakening cavity is lower than the pressure in the second cavity, so that the elastic membrane is more likely to deform. When the amplitude is small, the elastic membrane can also be elastically deformed, thereby improving the sensitivity and giving full play to the vibration reduction effect. Under the same vibration conditions, the elastic membrane has a larger change amount, thereby improving the vibration attenuation effect.

[0006] In some embodiments, the suspension further includes: a shell, wherein the shell and the elastic membrane together define a sealed space, and the sealed space is constructed as the weakened cavity; wherein an adjustment valve is provided on the shell, and the adjustment valve is connected to the sealed space to adjust the pressure of the sealed space.

[0007] In some embodiments, the pressure of the sealed space is less than the atmospheric pressure; or, the pressure of the sealed space is greater than the atmospheric pressure.

[0008] In some embodiments, the suspension further includes: a shell, the shell is provided with an escape space communicating with an external space, and the escape space is configured as the weakened cavity.

[0009] In some embodiments, the suspension also includes: a flow channel assembly, the flow channel assembly is arranged between the leather cup and the main spring assembly, the flow channel assembly and the leather cup jointly define the first cavity, the flow channel assembly is provided with a first through hole, the elastic membrane is arranged in the first through hole, the flow channel assembly, the elastic membrane and the main spring assembly jointly define the second cavity; wherein a connecting flow channel is provided in the flow channel assembly, and the connecting flow channel connects the first cavity and the second cavity.

[0010] In some embodiments, the flow channel assembly includes: a flow channel lower plate, the flow channel lower plate and the leather cup jointly define the first cavity, and the flow channel lower plate is provided with a second through hole connected to the first cavity; a flow channel upper plate, the flow channel upper plate is arranged on the flow channel lower plate, the flow channel upper plate and the elastic membrane and the main spring assembly jointly define the second cavity, the flow channel upper plate and the flow channel lower plate jointly define the connecting flow channel, and the flow channel upper plate is provided with a third through hole, and the third through hole connects the connecting flow channel and the second cavity.

[0011] In some embodiments, the flow channel upper plate and the flow channel lower plate jointly define an installation space connected to the first through hole, and the elastic membrane is arranged in the installation space; wherein, in the direction away from the elastic membrane, the diameter of the first through hole at least partially gradually decreases, and the elastic membrane has a first protrusion, the first protrusion corresponds to the first through hole, and in the direction away from the flow channel upper plate, the diameter of the first protrusion gradually increases to adapt to the first through hole; and / or, the flow channel lower plate is provided with a fourth through hole, in the direction away from the elastic membrane, the diameter of the fourth through hole at least partially gradually decreases, and the elastic membrane has a second protrusion, the second protrusion corresponds to the fourth through hole, and in the direction away from the flow channel lower plate, the diameter of the second protrusion gradually increases to adapt to the fourth through hole.

[0012] In some embodiments, the communicating flow channel is independent of the installation space and is disposed around the elastic membrane, and the first protrusion and / or the second protrusion is disposed on the center line of the elastic membrane.

[0013] In some embodiments, the elastic membrane is also provided with a sealing portion, the sealing portion is arranged at the edge of the elastic membrane, and the sealing portion stops at the upper plate and the lower plate of the flow channel; wherein, the elastic membrane is also provided with a third protrusion, and the third protrusion is arranged on the inner side of the sealing portion.

[0014] A vehicle according to an embodiment of the utility model includes the above-mentioned vehicle suspension.

[0015] According to the vehicle of the embodiment of the utility model, a weakening cavity is provided, and the pressure in the weakening cavity is lower than the pressure in the second cavity, so that the elastic membrane is more likely to deform. When the amplitude is small, the elastic membrane can also undergo elastic deformation, thereby improving the sensitivity and giving full play to the vibration reduction effect. Under the same vibration conditions, the elastic membrane has a larger change amount, thereby improving the vibration attenuation effect.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 A cross-sectional view of the suspension in the embodiment of the utility model Figure 1 ;

[0019] Figure 2 A cross-sectional view of the suspension in the embodiment of the utility model Figure 2 ;

[0020] Figure 3 A cross-sectional view of the suspension in the embodiment of the utility model Figure 3 ;

[0021] Figure 4 for Figure 1 Axonometric view of the upper plate of the mid-flow channel;

[0022] Figure 5 for Figure 1 Axonometric view of the lower plate of the mid-flow channel Figure 1 ;

[0023] Figure 6 for Figure 1 Axonometric view of the lower plate of the mid-flow channel Figure 2 ;

[0024] Figure 7 A cross-sectional view of the suspension in the embodiment of the utility model Figure 4 ;

[0025] Figure 8 for Figure 1 Axonometric view of the mesoelastic membrane;

[0026] Fig. 9 for Figure 1 Axonometric view of the middle leather cup;

[0027] Fig.10 for Figure 1 Axonometric view of the middle seal housing;

[0028] Fig.11 A cross-sectional view of the suspension in the embodiment of the utility model Figure 5 .

[0029] Reference numerals:

[0030] 100. Suspension;

[0031] 10. leather cup; 11. first cavity; 12. avoidance hole;

[0032] 20. Main spring assembly; 21. Main spring inner core; 22. Main spring member; 23. Main spring base;

[0033] 30. elastic membrane; 31. second cavity; 32. weakened cavity; 33. first protrusion; 34. second protrusion; 35. sealing portion; 36. third protrusion;

[0034] 40. Shell; 41. Sealed space; 42. Adjustment valve; 43. Upper shell; 44. Lower shell; 45. Sealed shell;

[0035] 50. flow channel assembly; 52. connecting flow channel; 53. flow channel lower plate; 531. second through hole; 532. fourth through hole; 533. fixing column; 54. flow channel upper plate; 541. third through hole; 542. first through hole; 543. loading hole; 544. positioning hole; 55. installation space;

[0036] 60. Limiting assembly; 61. Limiting block frame; 62. Limiting block colloid. DETAILED DESCRIPTION

[0037] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0038] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" 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 utility model 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 a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 according to specific circumstances.

[0040] Unless otherwise specified, the front-to-back direction in the present application is the longitudinal direction of the vehicle, that is, the X direction; the left-right direction is the lateral direction of the vehicle, that is, the Y direction; and the up-down direction is the vertical direction of the vehicle, that is, the Z direction.

[0041] Reference below Figure 1-Figure 11 A suspension 100 of a vehicle according to an embodiment of the present invention is described.

[0042] Reference Figure 1 According to an embodiment of the present invention, a vehicle suspension 100 includes a leather cup 10 , a main spring assembly 20 and an elastic membrane 30 .

[0043] The leather cup 10 defines a first cavity 11, in which a fluid damping medium is disposed. The main spring assembly 20 is used to transmit vibration. The elastic membrane 30 and the main spring assembly 20 together define a second cavity 31, and the second cavity 31 is connected to the first cavity 11. The elastic membrane 30 is further provided with a weakening cavity 32 on the side away from the second cavity 31, and the pressure of the weakening cavity 32 is less than the pressure of the second cavity 31, so as to weaken the elastic membrane 30.

[0044] Among them, a first cavity 11 and a second cavity 31 are provided in the suspension 100, and the first cavity 11 is connected to the second cavity 31, and the fluid damping medium in the first cavity 11 and the second cavity 31 can flow, that is, the fluid damping medium in the first cavity 11 can flow to the second cavity 31, and the fluid damping medium in the second cavity 31 can flow to the first cavity 11. At the same time, the leather cup 10 can undergo elastic deformation. When the vibration amplitude is large, the vibration amplitude transmitted by the main spring assembly 20 is large. Under the action of pressure, the fluid damping medium flows to the second cavity 31. The fluid damping medium has viscosity and flow resistance, which converts the vibration energy into heat energy. At the same time, the leather cup 10 is deformed to produce the effect of attenuating the vibration.

[0045] The fluid damping medium may be a liquid, such as hydraulic oil or silicone oil. When the suspension 100 is vibrated, the liquid flows between the first cavity 11 and the second cavity 31. The viscosity and flow resistance of the liquid absorb the vibration energy, convert it into heat energy and dissipate it.

[0046] The fluid damping medium may also be a gas, such as air or nitrogen. When the suspension 100 is vibrated, the gas is compressed and expanded in the cavity, and the collision and flow of the gas molecules absorb the vibration energy.

[0047] In the related art, the engine hydraulic mount is a support and vibration reduction device for the vehicle engine. The engine hydraulic mount is located between the engine and the chassis, and uses hydraulic fluid to absorb and attenuate the vibration and impact generated when the engine is running. The mount is usually provided with a hydraulic chamber, in which there is liquid, and the liquid flows to absorb and attenuate the vibration energy. A decoupling membrane is also provided in the hydraulic chamber. When the vibration amplitude is small, the decoupling membrane acts to slow down the vibration. However, the decoupling membrane reacts slowly.

[0048] In the related art, the pressure on both sides of the decoupling membrane is the same, and when the vibration amplitude is small, the decoupling membrane cannot respond in time.

[0049] In the embodiment of the utility model, a weakened cavity 32 is provided on one side of the elastic membrane 30, and the second cavity 31 and the weakened cavity 32 are respectively located on both sides of the elastic membrane 30. The pressure in the weakened cavity 32 is lower than the pressure in the second cavity 31, so that the elastic membrane 30 is more likely to deform. When the amplitude is small, the elastic membrane 30 can also be elastically deformed, thereby improving the sensitivity and giving full play to the vibration reduction effect.

[0050] The embodiment of the utility model reduces the dynamic stiffness by setting a weakened cavity 32 on one side of the elastic membrane 30. The dynamic stiffness reflects the resistance of an object to vibration and deformation. The smaller the dynamic stiffness is, the more easily the elastic membrane 30 is deformed. Under the same vibration conditions, the elastic membrane 30 changes more, thereby improving the vibration attenuation effect.

[0051] The suspension 100 of the embodiment of the utility model has a self-switching characteristic. The elastic membrane 30 and the leather cup 10 are used to attenuate vibration according to the input amplitude. A weakening cavity 32 is added inside to facilitate changing the dynamic characteristics and attenuation characteristics.

[0052] According to the suspension 100 of the vehicle in the embodiment of the utility model, by setting the weakened cavity 32, the pressure in the weakened cavity 32 is lower than the pressure in the second cavity 31, so that the elastic membrane 30 is more likely to deform. When the amplitude is small, the elastic membrane 30 can also be elastically deformed, thereby improving the sensitivity and giving full play to the vibration reduction effect. Under the same vibration conditions, the elastic membrane 30 has a larger change amount, thereby improving the vibration attenuation effect.

[0053] Reference Figure 2 In some embodiments, the suspension 100 further includes: a housing 40, wherein the housing 40 and the elastic membrane 30 define a sealed space 41, and the sealed space 41 is configured as a weakened cavity 32. The housing 40 is provided with an adjustment valve 42, and the adjustment valve 42 is connected to the sealed space 41 to adjust the pressure of the sealed space 41.

[0054] Among them, the sealed space 41 is a sealed space, and the adjustment valve 42 on the shell 40 is used to adjust the pressure of the sealed space 41. Different pressures can adjust the weakening effect of the weakening cavity 32 on the elastic membrane 30. For example, by reducing the pressure of the sealed space 41, the pressure of the sealed space 41 is smaller than the pressure of the second cavity 31, and the weakening effect is stronger.

[0055] In the above embodiment, a sealed space 41 is provided on one side of the elastic membrane 30, and the weakening cavity 32 is constructed using the sealed space 41. The pressure of the sealed space 41 can be freely adjusted by adjusting the valve 42, thereby freely adjusting the weakening effect of the weakening cavity 32 on the elastic membrane 30 to meet the needs of different vehicle models.

[0056] In some embodiments, the pressure of the sealed space 41 is less than the atmospheric pressure.

[0057] Among them, the pressure of the sealed space 41 is adjusted by adjusting the valve 42, so that the pressure of the sealed space 41 is less than the atmospheric pressure. The atmospheric pressure is the pressure of the space around the suspension 100. It should be noted that the side of the main spring assembly 20 away from the second cavity 31 is usually the atmospheric environment. The main spring assembly 20 supports the engine. The main spring assembly 20 transmits the pressure to the second cavity 31. The pressure of the second cavity 31 is usually greater than the atmospheric pressure.

[0058] In the above scheme, by setting the pressure of the sealed space 41 to be lower than the atmospheric pressure, the weakening effect of the weakening cavity 32 on the elastic membrane 30 is further improved. Under the same vibration amplitude, the change of the elastic membrane 30 is larger, thereby improving the vibration attenuation effect.

[0059] In other embodiments, the pressure of the sealed space 41 is greater than the atmospheric pressure.

[0060] Among them, the pressure of the sealed space 41 is adjusted by adjusting the valve 42, so that the pressure of the sealed space 41 is greater than the atmospheric pressure. The atmospheric pressure is the pressure of the space around the suspension 100. It should be noted that the side of the main spring assembly 20 away from the second cavity 31 is usually the atmospheric environment. The main spring assembly 20 supports the engine. The main spring assembly 20 transmits the pressure to the second cavity 31. The pressure of the second cavity 31 is usually greater than the atmospheric pressure.

[0061] In the above solution, by setting the pressure of the sealed space 41 to be greater than the atmospheric pressure, and of course, the pressure of the sealed space 41 is less than the pressure of the second cavity 31, the deformation range of the elastic membrane 30 is larger, thereby improving safety.

[0062] Specifically, the pressure of the sealed space 41 is 4.28 atmospheres, which fully exerts the weakening effect.

[0063] In other embodiments, the pressure of the sealed space 41 is equal to the atmospheric pressure.

[0064] In the above solution, by setting the pressure of the sealed space 41 to be equal to the atmospheric pressure, rapid molding of the suspension 100 is facilitated.

[0065] In some specific embodiments, the sealed space 41 is filled with an inert gas to improve stability.

[0066] In some embodiments, the suspension 100 further includes: a housing 40 , the housing 40 is provided with an escape space communicating with an external space, and the escape space is configured as a weakened cavity 32 .

[0067] The avoidance space provided on the housing 40 is directly connected to the external space, that is, the weakened cavity 32 is directly connected to the external space, and the pressure on one side of the elastic membrane 30 is the atmospheric pressure.

[0068] In the above scheme, the avoidance space on the outer shell 40 is constructed as a weakened cavity 32, so that the pressure on one side of the elastic membrane 30 is always the atmospheric pressure, and the side of the main spring assembly 20 facing away from the second cavity 31 is the atmospheric environment. The main spring assembly 20 supports the engine, and the main spring assembly 20 transmits the pressure to the second cavity 31. The pressure of the second cavity 31 is usually greater than the atmospheric pressure, which simplifies the structure and reduces the cost.

[0069] Reference Figure 3In some embodiments, the suspension 100 further includes: a flow channel assembly 50, the flow channel assembly 50 is disposed between the leather cup 10 and the main spring assembly 20, the flow channel assembly 50 and the leather cup 10 jointly define a first cavity 11, the flow channel assembly 50 is provided with a first through hole 542, the elastic membrane 30 is disposed in the first through hole 542, the flow channel assembly 50 and the elastic membrane 30 and the main spring assembly 20 jointly define a second cavity 31; wherein, a connecting flow channel 52 is provided in the flow channel assembly 50, and the connecting flow channel 52 connects the first cavity 11 and the second cavity 31.

[0070] Among them, the connecting flow channel 52 is arranged in the flow channel assembly 50, and the fluid damping medium flows in the first cavity 11 and the second cavity 31 through the connecting flow channel 52. The elastic membrane 30 is arranged in the first through hole 542, and the first through hole 542 is connected to the second cavity 31. The side of the elastic membrane 30 facing the second cavity 31 contacts the fluid damping medium, and the side of the elastic membrane 30 facing away from the second cavity 31 is provided with a weakened cavity 32.

[0071] In some specific embodiments, the flow channel component 50 has a first side and a second side, the second cavity 31 is arranged on the first side of the flow channel component 50, the first cavity 11 is arranged on the second side of the flow channel component 50, and the weakened cavity 32 is arranged on the second side of the flow channel component 50. On the second side of the flow channel component 50, the first cavity 11 can be arranged around the weakened cavity 32, or the first cavity 11 and the weakened cavity 32 can be arranged in sequence in one direction, for example, along the left and right directions.

[0072] In other specific embodiments, the flow channel component 50 has a first side and a second side, the second cavity 31 is disposed on the first side of the flow channel component 50 , the first cavity 11 is disposed on the first side of the flow channel component 50 , and the weakened cavity 32 is disposed on the second side of the flow channel component 50 .

[0073] Reference Figures 3 to 6 In some embodiments, the flow channel assembly 50 includes: a flow channel lower plate 53 and a flow channel upper plate 54 .

[0074] The flow channel lower plate 53 and the leather cup 10 jointly define the first cavity 11, and the flow channel lower plate 53 is provided with a second through hole 531 communicating with the first cavity 11. The flow channel upper plate 54 is provided on the flow channel lower plate 53, and the flow channel upper plate 54, the elastic membrane 30, and the main spring assembly 20 jointly define the second cavity 31, and the flow channel upper plate 54 and the flow channel lower plate 53 jointly define the communication flow channel 52, and the flow channel upper plate 54 is provided with a third through hole 541, and the third through hole 541 communicates the communication flow channel 52 with the second cavity 31.

[0075] Among them, the first cavity 11 is arranged on one side of the flow channel assembly 50, the second cavity 31 is arranged on the other side of the flow channel assembly 50, the leather cup 10 is arranged on the side of the flow channel lower plate 53 away from the flow channel upper plate 54, and together with the flow channel lower plate 53 defines the first cavity 11, the main spring assembly 20 is arranged on the side of the flow channel upper plate 54 away from the flow channel lower plate 53, and together with the flow channel upper plate 54 and the elastic membrane 30 defines the second cavity 31, the second through hole 531 on the flow channel lower plate 53 connects the first cavity 11 and the connecting flow channel 52, the third through hole 541 of the flow channel upper plate 54 connects the second cavity 31 and the connecting flow channel 52, thereby connecting the first cavity 11 and the second cavity 31.

[0076] In the above solution, by splitting the flow channel assembly 50 into the flow channel upper plate 54 and the flow channel lower plate 53, the flow channel upper plate 54 and the flow channel lower plate 53 can be manufactured separately, which reduces the manufacturing difficulty and reduces the cost.

[0077] Reference Figure 7 In some embodiments, the flow channel upper plate 54 and the flow channel lower plate 53 jointly define an installation space 55 connected to the first through hole 542, and the elastic membrane 30 is arranged in the installation space 55; wherein, in the direction away from the elastic membrane 30, the diameter of the first through hole 542 gradually decreases, and the elastic membrane 30 has a first protrusion 33, and the first protrusion 33 corresponds to the first through hole 542. In the direction away from the flow channel upper plate 54, the diameter of the first protrusion 33 gradually increases to adapt to the first through hole 542.

[0078] Among them, the installation space 55 is used to install the elastic membrane 30, the first through hole 542 is set on the flow channel upper plate 54, the first protrusion 33 on the elastic membrane 30 corresponds to the first through hole 542 of the flow channel upper plate 54, in the direction away from the elastic membrane 30, the diameter of the first through hole 542 at least partially gradually decreases, and in the direction away from the flow channel upper plate 54, the diameter of the first protrusion 33 gradually increases. It can be understood that when vibration occurs, the vibration is transmitted to the elastic membrane 30 through the fluid damping medium, the elastic membrane 30 vibrates, the elastic membrane 30 elastically deforms and contacts the flow channel upper plate 54, and the first protrusion 33 is suitable for surface contact with the first through hole 542.

[0079] In the above scheme, in the direction away from the elastic membrane 30, at least part of the diameter of the first through hole 542 is set to gradually decrease, and in the direction away from the flow channel upper plate 54, the diameter of the first protrusion 33 is set to gradually increase, so that the first protrusion 33 completely blocks the first through hole 542, and the first protrusion 33 is in surface contact with the first through hole 542, avoiding linear contact between the elastic membrane 30 and the flow channel upper plate 54, thereby increasing the service life. At the same time, the flow channel upper plate 54 is used to bear the elastic membrane 30, avoiding excessive deformation of the elastic membrane 30, improving safety, and controlling the opening and closing of the first through hole 542 of the flow channel upper plate 54 by the displacement of the first protrusion 33 on the elastic membrane 30, thereby changing the dynamic characteristics of the suspension 100.

[0080] Specifically, in the direction from bottom to top, the diameter of the first through hole 542 first gradually decreases and then remains at a fixed value, the first protrusion 33 is constructed in a truncated cone shape, the first through hole 542 is correspondingly arranged, and the truncated cone-shaped first protrusion 33 is inserted into the first through hole 542; or, the first protrusion 33 is constructed in a spherical shape, the first through hole 542 is correspondingly arranged, and the spherical first protrusion 33 is inserted into the first through hole 542.

[0081] Specifically, the flow channel upper plate 54 is constructed as a disc-shaped structure, and is also provided with a loading hole 543 and a positioning hole 544 . The loading hole 543 connects the second cavity 31 and the installation space 55 , and the positioning hole 544 corresponds to the fixing column 533 on the flow channel lower plate 53 .

[0082] Specifically, the flow channel lower plate 53 is constructed as a disc-shaped structure and is formed by an integrated PA66 injection molding process.

[0083] In other embodiments, the flow channel upper plate 54 and the flow channel lower plate 53 jointly define an installation space 55 connected to the first through hole 542, and the elastic membrane 30 is arranged in the installation space 55; wherein, the flow channel lower plate 53 is provided with a fourth through hole 532, and in the direction away from the elastic membrane 30, the diameter of the fourth through hole 532 at least partially gradually decreases, and the elastic membrane 30 has a second protrusion 34, and the second protrusion 34 corresponds to the fourth through hole 532, and in the direction away from the flow channel lower plate 53, the diameter of the second protrusion 34 gradually increases to adapt to the fourth through hole 532.

[0084] Among them, the installation space 55 is used to install the elastic membrane 30, the fourth through hole 532 is set on the lower plate 53 of the flow channel, the second protrusion 34 on the elastic membrane 30 corresponds to the fourth through hole 532 of the lower plate 53 of the flow channel, and in the direction away from the elastic membrane 30, the diameter of at least part of the fourth through hole 532 gradually decreases, and in the direction away from the lower plate 53 of the flow channel, the diameter of the second protrusion 34 gradually increases. It can be understood that when vibration occurs, the vibration is transmitted to the elastic membrane 30 through the fluid damping medium, the elastic membrane 30 vibrates, and the elastic membrane 30 elastically deforms to contact the lower plate 53 of the flow channel, and the second protrusion 34 is suitable for surface contact with the fourth through hole 532.

[0085] In the above scheme, in the direction away from the elastic membrane 30, the diameter of the fourth through hole 532 is set to gradually decrease, and in the direction away from the flow channel lower plate 53, the diameter of the second protrusion 34 is set to gradually increase, so that the second protrusion 34 completely blocks the fourth through hole 532, and the second protrusion 34 is in surface contact with the fourth through hole 532, avoiding linear contact between the elastic membrane 30 and the flow channel lower plate 53, thereby increasing the service life. At the same time, the flow channel lower plate 53 is used to bear the elastic membrane 30, avoiding excessive deformation of the elastic membrane 30, improving safety, and controlling the opening and closing of the fourth through hole 532 of the flow channel lower plate 53 by the displacement of the second protrusion 34 on the elastic membrane 30, thereby changing the dynamic characteristics of the suspension 100.

[0086] Specifically, in the direction from top to bottom, the diameter of the fourth through hole 532 first gradually decreases and then remains at a fixed value, the second protrusion 34 is constructed as a truncated cone, the fourth through hole 532 is correspondingly arranged, and the truncated cone-shaped second protrusion 34 is inserted into the fourth through hole 532; or, the second protrusion 34 is constructed as a spherical shape, the fourth through hole 532 is correspondingly arranged, and the spherical second protrusion 34 is inserted into the fourth through hole 532.

[0087] Reference Figure 7 In some other embodiments, the flow channel upper plate 54 and the flow channel lower plate 53 jointly define an installation space 55 connected to the first through hole 542, and the elastic membrane 30 is arranged in the installation space 55; wherein, in the direction away from the elastic membrane 30, the diameter of the first through hole 542 at least partially gradually decreases, the elastic membrane 30 has a first protrusion 33, the first protrusion 33 corresponds to the first through hole 542, and in the direction away from the flow channel upper plate 54, the diameter of the first protrusion 33 gradually increases to adapt to the first through hole 542. At the same time, the flow channel lower plate 53 is provided with a fourth through hole 532, and in the direction away from the elastic membrane 30, the diameter of the fourth through hole 532 at least partially gradually decreases, the elastic membrane 30 has a second protrusion 34, the second protrusion 34 corresponds to the fourth through hole 532, and in the direction away from the flow channel lower plate 53, the diameter of the second protrusion 34 gradually increases to adapt to the fourth through hole 532.

[0088] The installation space 55 is used to install the elastic membrane 30, the first through hole 542 is provided on the flow channel upper plate 54, the first protrusion 33 on the elastic membrane 30 corresponds to the first through hole 542 on the flow channel upper plate 54, the diameter of the first through hole 542 gradually decreases in the direction away from the elastic membrane 30, and the diameter of the first protrusion 33 gradually increases in the direction away from the flow channel upper plate 54, the fourth through hole 532 is provided on the flow channel lower plate 53, the second protrusion 34 on the elastic membrane 30 corresponds to the fourth through hole of the flow channel lower plate 53 532, in the direction away from the elastic membrane 30, the diameter of the fourth through hole 532 gradually decreases, and in the direction away from the lower plate 53 of the flow channel, the diameter of the second protrusion 34 gradually increases. It can be understood that when vibration occurs, the vibration is transmitted to the elastic membrane 30 through the fluid damping medium, the elastic membrane 30 vibrates, and the elastic membrane 30 elastically deforms to contact the upper plate 54 and the lower plate 53 of the flow channel. The first protrusion 33 and the first through hole 542 are suitable for surface contact, and the second protrusion 34 and the fourth through hole 532 are suitable for surface contact.

[0089] In the above scheme, in the direction away from the elastic membrane 30, the diameter of the first through hole 542 is set to gradually decrease, and in the direction away from the flow channel upper plate 54, the diameter of the first protrusion 33 is set to gradually increase, so that the first protrusion 33 completely blocks the first through hole 542, and the first protrusion 33 is in surface contact with the first through hole 542, avoiding linear contact between the elastic membrane 30 and the flow channel upper plate 54, thereby increasing the service life. In the direction away from the elastic membrane 30, the diameter of the fourth through hole 532 is set to gradually decrease, and in the direction away from the flow channel lower plate 53, the diameter of the second protrusion 34 is set to gradually increase, so that the second protrusion 34 completely blocks the fourth through hole 532, and the second protrusion 34 is in surface contact with the fourth through hole 532, avoiding linear contact between the elastic membrane 30 and the flow channel lower plate 53, thereby increasing the service life. At the same time, the flow channel upper plate 54 and the flow channel lower plate 53 are used to bear the elastic membrane 30, so as to avoid excessive deformation of the elastic membrane 30 and improve safety.

[0090] Specifically, the first protrusion 33 is constructed in a truncated cone shape, the first through hole 542 is correspondingly arranged, and the truncated cone-shaped first protrusion 33 is inserted into the first through hole 542; or, the first protrusion 33 is constructed in a spherical shape, the first through hole 542 is correspondingly arranged, and the spherical first protrusion 33 is inserted into the first through hole 542.

[0091] Specifically, the second protrusion 34 is constructed in a truncated cone shape, the fourth through hole 532 is correspondingly arranged, and the truncated cone-shaped second protrusion 34 is inserted into the fourth through hole 532; or, the second protrusion 34 is constructed in a spherical shape, the fourth through hole 532 is correspondingly arranged, and the spherical second protrusion 34 is inserted into the fourth through hole 532.

[0092] Specifically, the fourth through hole 532 is connected to the weakened cavity 32. It can be understood that when the second protrusion 34 is inserted into the fourth through hole 532, the second protrusion 34 blocks the fourth through hole 532, and the second protrusion 34 indirectly blocks the weakened cavity 32. The overall structure is simple, and the operation is more stable and reliable.

[0093] In some embodiments, the height of the first protrusion 33 and / or the second protrusion 34 can be designed based on the input amplitude of the power or vehicle type to improve its sensitivity.

[0094] Reference Figures 3 to 7 In some embodiments, the communication channel 52 is independent of the installation space 55 and is disposed around the elastic membrane 30 , and the first protrusion 33 is disposed on the center line of the elastic membrane 30 .

[0095] Among them, the connecting flow channel 52 and the installation space 55 are independent spaces on the flow channel assembly 50. In the radial direction of the flow channel assembly 50, the connecting flow channel 52 is located outside the installation space 55. The connecting flow channel 52 extends along the circumferential direction of the flow channel assembly 50. The connecting flow channel 52 surrounds the elastic membrane 30. The center line of the elastic membrane 30 passes through the first protrusion 33. The first protrusion 33 is located at the center position of the elastic membrane 30.

[0096] In the above scheme, by setting the first protrusion 33 at the center position of the elastic membrane 30, it can be understood that when the elastic membrane 30 is deformed, the center position of the elastic membrane 30 deforms more than the edge position. By setting the first protrusion 33 at the center position of the elastic membrane 30, the first protrusion 33 is used to increase the strength of the center position of the elastic membrane 30 to avoid damage. At the same time, the flow channel upper plate 54 bears the center position of the elastic membrane 30 with the largest deformation, avoiding excessive deformation and improving safety.

[0097] It should be noted that the first protrusion 33 being located at the center does not mean that the center line of the first protrusion 33 completely coincides with the center line of the elastic membrane 30 , and the center line of the elastic membrane 30 passes through the first protrusion 33 .

[0098] Reference Figures 3 to 7 In some embodiments, the communication channel 52 is independent of the installation space 55 and is disposed around the elastic membrane 30 , and the second protrusion 34 is disposed on the center line of the elastic membrane 30 .

[0099] Among them, the connecting flow channel 52 and the installation space 55 are both independent spaces on the flow channel assembly 50. In the radial direction of the flow channel assembly 50, the connecting flow channel 52 is located outside the installation space 55. The connecting flow channel 52 extends along the circumferential direction of the flow channel assembly 50. The connecting flow channel 52 surrounds the elastic membrane 30. The center line of the elastic membrane 30 passes through the second protrusion 34. The second protrusion 34 is located at the center position of the elastic membrane 30.

[0100] In the above scheme, by setting the second protrusion 34 at the center position of the elastic membrane 30, it can be understood that when the elastic membrane 30 is deformed, the center position of the elastic membrane 30 deforms more than the edge position. By setting the second protrusion 34 at the center position of the elastic membrane 30, the second protrusion 34 is used to increase the strength of the center position of the elastic membrane 30 to avoid damage. At the same time, the flow channel upper plate 54 bears the center position of the elastic membrane 30 with the largest deformation, avoiding excessive deformation and improving safety.

[0101] It should be noted that the second protrusion 34 being located at the center does not mean that the center line of the second protrusion 34 completely coincides with the center line of the elastic membrane 30 , and the center line of the elastic membrane 30 passes through the second protrusion 34 .

[0102] Reference Figures 3 to 7 In some embodiments, the communication channel 52 is independent of the installation space 55 and is disposed around the elastic membrane 30 , and the first protrusion 33 and the second protrusion 34 are disposed on the center line of the elastic membrane 30 .

[0103] The first protrusion 33 and the second protrusion 34 are respectively disposed on two opposite sides of the elastic membrane 30 , and the center line of the elastic membrane 30 passes through the first protrusion 33 and the second protrusion 34 .

[0104] In the above scheme, the first protrusion 33 and the second protrusion 34 are arranged at the center position of the elastic membrane 30, and the first protrusion 33 and the second protrusion 34 are used to increase the strength of the center position of the elastic membrane 30 to avoid damage. At the same time, the flow channel upper plate 54 and the flow channel lower plate 53 bear the center position of the elastic membrane 30 where the deformation is the largest, thereby avoiding excessive deformation and improving safety.

[0105] Specifically, the elastic membrane 30 is suspended 100 in the installation space 55 , and the elastic membrane 30 is spaced apart from the flow channel upper plate 54 and the flow channel lower plate 53 , thereby providing a certain space for the deformation of the elastic membrane 30 .

[0106] Reference Figure 7 , Figure 8 In some embodiments, the elastic membrane 30 is further provided with a sealing portion 35, which is arranged at the edge of the elastic membrane 30, and the sealing portion 35 stops at the flow channel upper plate 54 and the flow channel lower plate 53; wherein, the elastic membrane 30 is further provided with a third protrusion 36, which is arranged on the inner side of the sealing portion 35.

[0107] Among them, the sealing portion 35 stops at the flow channel upper plate 54 and the flow channel lower plate 53, separates the installation space 55, and improves the sealing performance. The third protrusion 36 is different from the first protrusion 33. Compared with the sealing portion 35, the third protrusion 36 is closer to the center position of the elastic membrane 30.

[0108] In the above solution, a sealing portion 35 is provided at the edge of the elastic membrane 30 , and the sealing portion 35 is used to stop the flow channel upper plate 54 and the flow channel lower plate 53 , thereby improving the sealing performance. Meanwhile, a third protrusion 36 is provided to improve the strength of the elastic membrane 30 .

[0109] Specifically, the elastic membrane 30 is configured as a decoupling membrane, and the material is natural rubber.

[0110] Reference Fig.11 In some embodiments, the main spring assembly 20 includes: a main spring core 21, a main spring member 22 and a main spring base 23, which are bonded together using a rubber vulcanization process.

[0111] Reference Fig.11 In some embodiments, the main spring assembly 20 is provided with a limit assembly 60, and the limit assembly 60 includes: a limit block frame 61 and a limit block colloid 62, which are bonded together using a rubber vulcanization process. The limit block colloid 62 is constructed in a wavy shape and is used for Z-axis limit buffering.

[0112] Reference Fig. 9 In some embodiments, the leather cup 10 is formed by vulcanization of natural rubber, and a avoidance hole 12 is provided on the leather cup 10 . The avoidance hole 12 is arranged in the weakened cavity 32 , and the avoidance hole 12 corresponds to the fourth through hole 532 .

[0113] Reference Figure 2 , Fig.10 In some embodiments, the housing 40 includes: an upper shell 43, a lower shell 44 and a sealing shell 45. The upper shell 43 is installed above the lower shell 44. The main spring assembly 20 is interference fit with the lower shell 44. The sealing shell 45 is installed below the lower shell 44. The sealing shell 45 is constructed as an integral part. The sealing shell 45 is injection molded with PA66 material or aluminum alloy. The sealing shell 45 provides a clamping function for the leather cup 10 to ensure sealing, and the adjustment valve 42 is installed on the sealing shell 45.

[0114] The following is combined with Figures 1 to 11 , the suspension 100 according to the embodiment of the present utility model is described in detail.

[0115] In the embodiment of the utility model, the main spring component 22 made of rubber material is vulcanized with the main spring inner core 21 and the main spring base 23 to form the main spring assembly 20. The main spring assembly 20 is installed on the lower housing 44 by interference fit.

[0116] The flow channel assembly 50, the leather cup 10, and the sealing shell 45 are sequentially added to the lower shell 44, and the diameter of the lower shell 44 is changed by the riveting process to seal the entire body, so that an independent space is formed inside. The flow channel assembly 50 divides the space of the main spring assembly 20, the lower shell 44, and the leather cup 10 into a second cavity 31 and a first cavity 11. The flow channel upper plate 54 and the main spring assembly 20 together define the second cavity 31, and the flow channel lower plate 53 and the leather cup 10 together define the first cavity 11.

[0117] The sealing shell 45 having the weakened cavity 32 is connected to the lower side of the lower shell 44. The flow channel upper plate 54 and the flow channel lower plate 53 together define the annular connecting flow channel 52, and allow the second cavity 31 to communicate with the first cavity 11 through the fluid damping medium. The flow channel upper plate 54 and the flow channel lower plate 53 together define the installation space 55 for installing the elastic membrane 30.

[0118] When no external force is applied to the elastic membrane 30, the upper side of the first protrusion 33 on the elastic membrane 30 and the first through hole 542 on the flow channel upper plate 54 are spaced apart from each other by a predetermined distance. The third protrusion 36 is spaced apart from the flow channel upper plate 54 by a predetermined distance. The third protrusion 36 and the first protrusion 33 can move and bend within the predetermined distance of the space. When the third protrusion 36 and the first protrusion 33 are in contact with the flow channel upper plate 54, the movement of the elastic membrane 30 can be restricted.

[0119] When the high-frequency and small-amplitude vibration (first input amplitude) generated during the operation of the vehicle is transmitted to the suspension 100, the main spring assembly 20 is vibrated. Due to the vibration of the main spring assembly 20, the fluid damping medium encapsulated in the second cavity 31 is vibrated, and its vibration amplitude is loaded onto the elastic membrane 30 through the loading hole 543 and the first through hole 542 of the flow channel upper plate 54. Since the amplitude is small under this working condition, the first protrusion 33 and the second protrusion 34 of the elastic membrane 30 will not contact the first through hole 542 and the fourth through hole 532 even if they move in the vertical direction. The pressure in the weakening cavity 32 is lower than the pressure in the second cavity 31, and the displacement of the elastic membrane 30 is larger than that of the traditional hydraulic suspension 100, so that the dynamic stiffness value of the suspension 100 can be lower than that of the traditional hydraulic suspension 100, and the transmission of the vibration energy of the powertrain to the vehicle can be attenuated.

[0120] When the second input amplitude (greater than the first input amplitude) generated during vehicle driving is transmitted to the suspension 100 of the embodiment of the utility model, the fluid damping medium in the second cavity 31 generates a downward pressure, which is applied to the elastic membrane 30 through the loading hole 543 and the first through hole 542. Since the amplitude of the second input vibration is greater than the first input amplitude, when the elastic membrane 30 moves downward in the vertical direction, the second protrusion 34 contacts the fourth through hole 532 on the lower plate 53 of the flow channel, and there is no gap. As a result, there is no air flow in the fourth through hole 532. Therefore, the fluid damping medium in the second cavity 31 moves to the first cavity 11 through the connecting flow channel 52, producing a vibration reduction effect.

[0121] The fluid damping medium in the first cavity 11 generates an upward pressure, which is applied to the elastic membrane 30. Since the amplitude of the second input vibration is greater than the first input amplitude, when the elastic membrane 30 moves upward in the vertical direction, the first protrusion 33 contacts the first through hole 542 on the flow channel upper plate 54, and there is no gap. Therefore, the fluid damping medium in the first cavity 11 moves to the second cavity 31 through the connecting flow channel 52, producing a vibration reduction effect.

[0122] Since the pressure of the weakened cavity 32 is lower than the pressure of the second cavity 31, the elastic membrane 30 moves to the lower plate 53 or the upper plate 54 of the flow channel in advance, so that the fluid damping medium flows to the first cavity 11 and the second cavity 31 through the connecting flow channel 52, and a large damping is generated at this time to attenuate the amplitude. Since the displacement of the elastic membrane 30 changes slowly, the dynamic stiffness increases slowly, and a shock absorption effect is generated. Due to the early intervention of the small pressure of the weakened cavity 32, the dynamic stiffness change rate is lower than that of the traditional hydraulic mount 100, and the maximum dynamic stiffness value is also lower than that of the traditional hydraulic mount 100.

[0123] The vehicle according to the embodiment of the present invention includes the suspension 100 mentioned above.

[0124] According to the vehicle of the embodiment of the utility model, a weakening cavity 32 is provided, and the pressure in the weakening cavity 32 is lower than the pressure in the second cavity 31, so that the elastic membrane 30 is more likely to deform. When the amplitude is small, the elastic membrane 30 can also undergo elastic deformation, thereby improving the sensitivity and giving full play to the vibration reduction effect. Under the same vibration conditions, the elastic membrane 30 has a larger change amount, thereby improving the vibration attenuation effect.

[0125] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0126] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A suspension for a vehicle, characterized in that: include: A leather cup (10), wherein the leather cup (10) defines a first cavity (11), wherein a fluid damping medium is disposed in the first cavity (11); A main spring assembly (20), wherein the main spring assembly (20) is used to transmit vibration; An elastic membrane (30), wherein the elastic membrane (30) and the main spring assembly (20) together define a second cavity (31), and the second cavity (31) is connected to the first cavity (11); wherein: A weakening cavity (32) is also provided on the side of the elastic membrane (30) facing away from the second cavity (31); the pressure of the weakening cavity (32) is lower than the pressure of the second cavity (31) so as to weaken the elastic membrane (30).

2. The vehicle suspension according to claim 1, characterized in that: Also includes: A housing (40), wherein the housing (40) and the elastic membrane (30) together define a sealed space (41), and the sealed space (41) is configured as the weakened cavity (32); wherein: The housing (40) is provided with an adjusting valve (42), and the adjusting valve (42) is connected to the sealed space (41) to adjust the pressure of the sealed space (41).

3. The vehicle suspension according to claim 2, characterized in that: The pressure of the sealed space (41) is lower than the atmospheric pressure; or, the pressure of the sealed space (41) is higher than the atmospheric pressure.

4. The vehicle suspension according to claim 1, characterized in that: Also includes: The outer shell (40) is provided with an escape space communicating with an external space, and the escape space is configured as the weakened cavity (32).

5. The vehicle suspension according to claim 1, characterized in that: Also includes: A flow channel assembly (50), wherein the flow channel assembly (50) is disposed between the leather cup (10) and the main spring assembly (20), the flow channel assembly (50) and the leather cup (10) jointly define the first cavity (11), the flow channel assembly (50) is provided with a first through hole (542), the elastic membrane (30) is disposed in the first through hole (542), the flow channel assembly (50) and the elastic membrane (30) and the main spring assembly (20) jointly define the second cavity (31); wherein, A connecting flow channel (52) is provided in the flow channel assembly (50), and the connecting flow channel (52) connects the first cavity (11) and the second cavity (31).

6. The vehicle suspension according to claim 5, characterized in that: The flow channel assembly (50) comprises: A flow channel lower plate (53), wherein the flow channel lower plate (53) and the leather cup (10) together define the first cavity (11), and the flow channel lower plate (53) is provided with a second through hole (531) communicating with the first cavity (11); The flow channel upper plate (54) is arranged on the flow channel lower plate (53), the flow channel upper plate (54) and the elastic membrane (30) and the main spring assembly (20) together define the second cavity (31), the flow channel upper plate (54) and the flow channel lower plate (53) together define the connecting flow channel (52), and the flow channel upper plate (54) is provided with a third through hole (541), and the third through hole (541) connects the connecting flow channel (52) and the second cavity (31).

7. The vehicle suspension according to claim 6, characterized in that: The flow channel upper plate (54) and the flow channel lower plate (53) jointly define an installation space (55) communicating with the first through hole (542), and the elastic membrane (30) is arranged in the installation space (55); wherein, In a direction away from the elastic membrane (30), the diameter of the first through hole (542) at least partially decreases gradually, the elastic membrane (30) has a first protrusion (33), the first protrusion (33) corresponds to the first through hole (542), and in a direction away from the flow channel upper plate (54), the diameter of the first protrusion (33) gradually increases to adapt to the first through hole (542); and / or, the flow channel lower plate (53) is provided with a fourth through hole (532), in a direction away from the elastic membrane (30), the diameter of the fourth through hole (532) at least partially decreases gradually, the elastic membrane (30) has a second protrusion (34), the second protrusion (34) corresponds to the fourth through hole (532), and in a direction away from the flow channel lower plate (53), the diameter of the second protrusion (34) gradually increases to adapt to the fourth through hole (532).

8. The vehicle suspension according to claim 7, characterized in that: The communication flow channel (52) is independent of the installation space (55) and is arranged around the elastic membrane (30), and the first protrusion (33) and / or the second protrusion (34) are arranged on the center line of the elastic membrane (30).

9. The vehicle suspension according to claim 8, characterized in that: The elastic membrane (30) is further provided with a sealing portion (35), the sealing portion (35) being provided at the edge of the elastic membrane (30), the sealing portion (35) being stopped against the flow channel upper plate (54) and the flow channel lower plate (53); wherein, The elastic membrane (30) is also provided with a third protruding portion (36), and the third protruding portion (36) is arranged on the inner side of the sealing portion (35).

10. A vehicle, characterized in that: A suspension (100) for a vehicle comprising any one of claims 1 to 9.

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