Suspension assembly and vehicle with same

Abstract

The utility model discloses a suspension assembly and a vehicle with the suspension assembly, and belongs to the technical field of automobiles, the suspension assembly comprises a suspension main body and a flow channel assembly, the flow channel assembly is arranged in a medium cavity of the suspension main body and divides the medium cavity into an upper medium cavity and a lower medium cavity, the flow channel assembly comprises a flow channel shell and a decoupling film, the flow channel shell is provided with a main flow channel and a compensation flow channel, the main flow channel is communicated with the upper medium cavity and the lower medium cavity, the decoupling film is arranged in the flow channel shell, the decoupling film and the flow channel shell jointly define a working cavity and a compensation cavity, and the working cavity is located on one side of the decoupling film and communicated with the upper medium cavity. The compensation cavity is located on the other side of the decoupling film and communicates with the lower medium cavity through the compensation flow channel, so that the absorption effect of the suspension assembly on high-frequency small-amplitude vibration is improved, the risk of abnormal sound of the suspension assembly can be reduced during low-frequency large-amplitude vibration, the suspension assembly can restrain vibration within a large vibration frequency range, and high reliability is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, and more specifically, to a mounting assembly and a vehicle having the same. Background Art

[0002] The engine of a vehicle can be fixed to the vehicle body through a mounting assembly. The mounting assembly can be used to support and fix the engine and reduce the transmission of vibration between the engine and the vehicle body.

[0003] In the related art, the mounting assembly can only generate damping within a relatively small vibration frequency range, and the frequency range for the mounting assembly to suppress vibration is small, making it difficult to adapt to various working conditions of the whole vehicle. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the above technical problems in the prior art to a certain extent. For this purpose, the utility model provides a mounting assembly that can suppress vibration within a relatively large vibration frequency range.

[0005] The utility model also provides a vehicle having the above mounting assembly.

[0006] The mounting assembly according to the embodiment of the utility model includes: a mounting body and a flow channel assembly. The mounting body has a medium cavity. The flow channel assembly is disposed in the medium cavity and divides the medium cavity into an upper medium cavity and a lower medium cavity. The flow channel assembly includes: a flow channel housing having a main flow channel and a compensation flow channel. The main flow channel communicates the upper medium cavity and the lower medium cavity, and the length of the compensation flow channel is less than that of the main flow channel; a decoupling membrane disposed in the flow channel housing. The decoupling membrane and the flow channel housing jointly define a working cavity and a compensation cavity. The working cavity is located on one side of the decoupling membrane and communicates with the upper medium cavity, and the compensation cavity is located on the other side of the decoupling membrane and communicates with the lower medium cavity through the compensation flow channel.

[0007] In the mounting assembly according to the embodiment of the utility model, the working cavity and the compensation cavity are located on both sides of the decoupling membrane. The compensation cavity communicates with the lower medium cavity through the compensation flow channel, and the length of the compensation flow channel is less than that of the main flow channel, so as to improve the absorption effect of the mounting assembly on high-frequency small-amplitude vibrations, and can also reduce the risk of abnormal noise of the mounting assembly during low-frequency large-amplitude vibrations. The mounting assembly can suppress vibration within a relatively large vibration frequency range and has high reliability.

[0008] According to some embodiments of the utility model, the axis of the compensation cavity, the axis of the working cavity, and the axis of the flow channel housing coincide. The compensation flow channel is wound around the outside of the compensation cavity, and the main flow channel is wound around the outside of the compensation flow channel.

[0009] According to some embodiments of the present utility model, the flow channel housing includes: a flow channel upper plate having an upper flow channel hole and a working hole; a flow channel core body having a main flow channel groove, a lower flow channel hole, a core body hole, and a compensation flow channel groove; and a flow channel lower plate having a compensation hole. Wherein, the flow channel upper plate and the flow channel lower plate are connected to both sides of the flow channel core body. The main flow channel groove and the flow channel upper plate jointly define the main flow channel. The main flow channel is communicated with the upper medium chamber through the upper flow channel hole, and the main flow channel is communicated with the lower medium chamber through the lower flow channel hole. The compensation flow channel groove and the flow channel lower plate jointly define the compensation flow channel. The compensation flow channel is communicated with the lower medium chamber through the compensation hole. The decoupling film is disposed between the flow channel upper plate and the flow channel core body. The flow channel upper plate and the decoupling film jointly define the working chamber. The working chamber is communicated with the upper medium chamber through the working hole. The decoupling film, the core body hole, and the flow channel lower plate jointly define the compensation chamber.

[0010] According to some embodiments of the present utility model, the core body hole includes: a first hole section and a second hole section. The aperture of the first hole section is larger than that of the second hole section. The first hole section is communicated with the compensation flow channel groove through the second hole section. The decoupling film is installed in the first hole section, and the orthographic projection of the second hole section on the decoupling film is located within the decoupling film.

[0011] According to some embodiments of the present utility model, the decoupling film includes: a sealing film ring and a working film. The working film is connected to the inner side of the sealing film ring. The thickness of the sealing film ring is greater than the hole depth of the first hole section, and the thickness of the working film is less than the hole depth of the first hole section.

[0012] According to some embodiments of the present utility model, the working film includes: a circular thinning portion, an annular protruding portion, and an annular connecting portion. Along the radial direction of the circular thinning portion, the circular thinning portion, the annular protruding portion, the annular connecting portion, and the sealing film ring are connected in sequence. Along the thickness direction of the working film, the circular thinning portion corresponds to the second hole section and the working hole respectively. At least a part of the annular connecting portion is offset from the second hole section. The decoupling film has an open state and a closed state. In the open state, the annular protruding portion is separated from the hole wall of the second hole section to enable the first hole section to be communicated with the second hole section. In the closed state, the annular protruding portion is in abutting cooperation with the hole wall of the second hole section to prevent the first hole section from being communicated with the second hole section.

[0013] According to some embodiments of the present utility model, in the direction from the sealing film ring to the annular protruding portion, the thickness of the annular connecting portion first increases and then decreases.

[0014] According to some embodiments of the present utility model, the suspension main body includes: a main spring assembly and a housing assembly, the housing assembly includes: an upper housing, a lower housing and a leather cup, the upper housing is connected to the lower housing, the leather cup is connected to the lower housing, the main spring assembly passes through the upper housing and is connected to the inner wall of the lower housing, and the main spring assembly, the lower housing and the leather cup jointly define the medium cavity.

[0015] According to some embodiments of the present utility model, the main spring assembly includes: a main spring inner core, the main spring inner core passes through the upper housing; a main spring, the main spring is connected to the main spring inner core, and the main spring is in interference fit with the inner wall of the lower housing; a main spring base, the main spring base is arranged inside the main spring at the mating portion of the main spring and the lower housing.

[0016] A vehicle according to another embodiment of the present utility model includes the above-mentioned suspension assembly.

[0017] For a vehicle according to an embodiment of the present utility model, the working cavity and the compensation cavity of the suspension assembly are located on both sides of the decoupling membrane. The compensation cavity is communicated with the lower medium cavity through a compensation flow channel, and the length of the compensation flow channel is less than that of the main flow channel, so as to improve the absorption effect of the suspension assembly on high-frequency small-amplitude vibrations, and can also reduce the risk of abnormal noise of the suspension assembly during low-frequency large-amplitude vibrations. The suspension assembly can suppress vibrations within a large vibration frequency range, thereby providing good driving comfort for the whole vehicle.

[0018] The additional aspects and advantages of the present utility model will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of a partial structure of a suspension assembly according to an embodiment of the present utility model;

[0020] Figure 2 is a top view of a suspension assembly according to an embodiment of the present utility model;

[0021] Figure 3 is Figure 2 a sectional view taken along A-A, in which the heat shield is not shown;

[0022] Figure 4 is a schematic diagram of a decoupling membrane in an open state according to an embodiment of the present utility model;

[0023] Figure 5 is a schematic diagram of a decoupling membrane in a closed state according to an embodiment of the present utility model;

[0024] Figure 6 is a schematic diagram of a partial structure of a flow channel assembly according to an embodiment of the present utility modelFigure 1 ;

[0025] Figure 7 is a schematic diagram of a partial structure of a flow channel assembly according to an embodiment of the present invention Figure 2 ;

[0026] Figure 8 is a schematic diagram of an upper flow channel plate according to an embodiment of the present invention;

[0027] Figure 9 is a schematic diagram of a flow channel core according to an embodiment of the present invention Figure 1 ;

[0028] Figure 10 is a schematic diagram of a flow channel core according to an embodiment of the present invention Figure 2 ;

[0029] Figure 11 is a schematic diagram of a lower flow channel plate according to an embodiment of the present invention;

[0030] Figure 12 is a schematic diagram of a decoupling film according to an embodiment of the present invention;

[0031] Figure 13 is a schematic diagram of a partial structure of a decoupling film according to an embodiment of the present invention.

[0032] Reference numerals:

[0033] Flow channel assembly 1;

[0034] Flow channel housing 11;

[0035] Upper flow channel plate 111; Upper flow channel hole 1111; Working hole 1112; Communication hole 1113; Upper positioning hole 1114; Upper clamping hole 1115;

[0036] Flow channel core 112; Main flow channel groove 1121; Lower flow channel hole 1122; Core hole 1123; First hole section 11231; Second hole section 11232; Connection surface 11233; Compensation flow channel groove 1124; Upper clamping claw 1125; Upper positioning protrusion 1126; Lower clamping claw 1127; Lower positioning protrusion 1128; Flow channel filling port 1129;

[0037] Lower flow channel plate 113; Compensation hole 1131; Lower positioning hole 1132; Lower clamping hole 1133;

[0038] Annular limiting groove 114;

[0039] Decoupling film 12; Sealing film ring 121; Working film piece 122; Circular thinning part 1221; Annular protrusion part 1222; Annular connection part 1223;

[0040] Main runner 101; compensation runner 102; working cavity 103; compensation cavity 104;

[0041] Suspension body 2;

[0042] Main spring assembly 21; main spring inner core 211; bolt 2111; main spring 212; limiting surface 2121; main spring base 213; main spring inner skeleton 214;

[0043] Housing assembly 22; upper housing 221; lower housing 222; leather cup 223; vehicle body mounting hole 224;

[0044] Limiting assembly 23; limiting block skeleton 231; limiting block colloid 232;

[0045] Heat shield 3;

[0046] Medium cavity 201; upper medium cavity chamber 2011; lower medium cavity chamber 2012;

[0047] Suspension assembly 100. Detailed implementation mode

[0048] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation of the present invention.

[0049] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "thickness", "upper", "lower", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0050] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0051] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection, an electrical connection, or a connection that allows mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal communication between two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0052] The following will describe in detail the suspension assembly 100 according to an embodiment of the present utility model and a vehicle having the same with reference to the accompanying drawings.

[0053] Refer to Figures 1 - 7 As shown, the suspension assembly 100 according to an embodiment of the present utility model includes a suspension body 2 and a flow channel assembly 1. The suspension body 2 has a medium cavity 201. The flow channel assembly 1 is disposed in the medium cavity 201 and divides the medium cavity 201 into an upper medium cavity 2011 and a lower medium cavity 2012. The flow channel assembly 1 includes a flow channel housing 11 and a decoupling membrane 12. The flow channel housing 11 has a main flow channel 101 and a compensation flow channel 102. The main flow channel 101 communicates the upper medium cavity 2011 and the lower medium cavity 2012. The length of the compensation flow channel 102 is less than the length of the main flow channel 101. The decoupling membrane 12 is disposed in the flow channel housing 11. The decoupling membrane 12 and the flow channel housing 11 jointly define a working cavity 103 and a compensation cavity 104. The working cavity 103 is located on one side of the decoupling membrane 12 and communicates with the upper medium cavity 2011. The compensation cavity 104 is located on the other side of the decoupling membrane 12 and communicates with the lower medium cavity 2012 through the compensation flow channel 102.

[0054] Among them, the suspension assembly 100 can be used for a vehicle. The engine of the vehicle can be fixed to the vehicle body through the suspension assembly 100. The suspension assembly 100 can be used to support and fix the engine and reduce the vibration transmission between the engine and the vehicle body.

[0055] The suspension assembly 100 includes a suspension body 2 and a flow channel assembly 1. The suspension body 2 can be used to connect the engine and the vehicle body. The suspension body 2 has a medium cavity 201. The medium cavity 201 is filled with a damping medium. The damping medium can be a liquid. The flow channel assembly 1 is disposed in the medium cavity 201 and divides the medium cavity 201 into an upper medium cavity 2011 and a lower medium cavity 2012. The vibration generated by the engine can be transmitted to the medium cavity 201, resulting in a pressure difference between the upper medium cavity 2011 and the lower medium cavity 2012. The damping media in the upper medium cavity 2011 and the lower medium cavity 2012 can be exchanged through the flow channel assembly 1. The flow channel assembly 1 generates damping on the damping medium flowing through it to suppress the vibration transmission and achieve the vibration reduction effect.

[0056] The flow channel assembly 1 includes: a flow channel shell 11 and a decoupling membrane 12. The flow channel shell 11 can be fixed in the medium cavity 201 and divide the medium cavity 201 into an upper medium chamber 2011 and a lower medium chamber 2012. The upper medium chamber 2011 can be located above the flow channel shell 11, and the lower medium chamber 2012 can be located below the flow channel shell 11. The flow channel shell 11 has a main flow channel 101, and the main flow channel 101 connects the upper medium chamber 2011 and the lower medium chamber 2012. The main flow channel 101 can remain in a permanently open state. The upper medium chamber 2011 and the lower medium chamber 2012 can exchange damping media through the main flow channel 101 to attenuate large-amplitude vibrations. The flow channel shell 11 also has a compensation flow channel 102. The length of the compensation flow channel 102 is less than the length of the main flow channel 101, and the compensation flow channel 102 is connected to the lower medium chamber 2012.

[0057] The decoupling membrane 12 is arranged in the flow channel shell 11. The decoupling membrane 12 can be an elastic natural rubber membrane. The decoupling membrane 12 can produce a certain amount of deformation when subjected to force. The decoupling membrane 12 and the flow channel shell 11 jointly define a working chamber 103 and a compensation chamber 104. The working chamber 103 is located on one side of the decoupling membrane 12 and is connected to the upper medium chamber 2011. The compensation chamber 104 is located on the other side of the decoupling membrane 12 and is connected to the lower medium chamber 2012 through the compensation flow channel 102. The pressure difference between the working chamber 103 and the compensation chamber 104 can be adjusted by the deformation of the decoupling membrane 12 to attenuate small-amplitude vibrations.

[0058] When high-frequency and small-amplitude vibrations are transmitted to the suspension assembly 100, the damping medium hardens due to high frequency, resulting in poor fluidity. The amount of medium exchange between the upper medium chamber 2011 and the lower medium chamber 2012 through the main channel 101 is small. At this time, the vibration energy can be attenuated by the deformation of the decoupling membrane 12, and the compensation chamber 104 and the compensation channel 102 can enhance the absorption effect of the suspension assembly 100 on high-frequency and small-amplitude vibrations.

[0059] Specifically, when high-frequency and small-amplitude vibrations are transmitted to the mounting assembly 100, when the pressure in the upper medium chamber 2011 is greater than the pressure in the lower medium chamber 2012, the pressure in the working chamber 103 connected to the upper medium chamber 2011 is also greater than the pressure in the compensation chamber 104 connected to the lower medium chamber 2012. The decoupling membrane 12 bulges and deforms towards the compensation chamber 104, the volume of the compensation chamber 104 decreases, and the damping medium in the compensation chamber 104 can be quickly pushed by the decoupling membrane 12 to flow through the shorter compensation flow channel 102 to the lower medium chamber 2012, so as to form a damping effect on the decoupling membrane 12. Similarly, when the pressure in the upper medium chamber 2011 is less than the pressure in the lower medium chamber 2012, the pressure in the working chamber 103 connected to the upper medium chamber 2011 is also less than the pressure in the compensation chamber 104 connected to the lower medium chamber 2012. The decoupling membrane 12 bulges and deforms towards the working chamber 103, the volume of the compensation chamber 104 increases, and the lower medium chamber 2012 can quickly flow into the compensation chamber 104 through the shorter compensation flow channel 102. Thus, by setting the compensation chamber 104 and the compensation flow channel 102 with a length shorter than the main flow channel 101, when there are high-frequency and small-amplitude vibrations, the damping media in the compensation chamber 104 and the lower medium chamber 2012 can be quickly exchanged along with the deformation of the decoupling membrane 12, so as to reduce the dynamic stiffness of the mounting assembly 100, improve the response speed of the mounting assembly 100, and enhance the absorption effect of the mounting assembly 100 on high-frequency small-amplitude vibrations.

[0060] When low-frequency and large-amplitude vibrations are transmitted to the mounting assembly 100, the upper medium chamber 2011 and the lower medium chamber 2012 can exchange media through the main flow channel 101 to attenuate the large-amplitude vibrations. At this time, the decoupling membrane 12 will also deform with the change of pressure. The compensation chamber 104 and the compensation flow channel 102 can reduce the force and speed of the decoupling membrane 12 hitting the flow channel housing 11, reduce the risk of abnormal noise of the mounting assembly 100, and improve the reliability of the mounting assembly 100.

[0061] Specifically, when low-frequency large-amplitude vibrations are transmitted to the mounting assembly 100, when the pressure in the upper medium chamber 2011 is greater than the pressure in the lower medium chamber 2012, the pressure in the working chamber 103 connected to the upper medium chamber 2011 is also greater than the pressure in the compensation chamber 104 connected to the lower medium chamber 2012. The decoupling membrane 12 bulges and deforms towards the compensation chamber 104, the volume of the compensation chamber 104 decreases, and the damping medium in the compensation chamber 104 can flow through the compensation flow channel 102 to the lower medium chamber 2012 under the push of the decoupling membrane 12. At the same time, the damping medium in the upper medium chamber 2011 also flows through the main flow channel 101 to the lower medium chamber 2012, resulting in an increase in the medium pressure in the lower medium chamber 2012, making the resistance of the damping medium in the compensation chamber 104 flowing through the compensation flow channel 102 to the lower medium chamber 2012 larger, so as to slow down the flow rate of the damping medium in the compensation chamber 104 to the lower medium chamber 2012, thereby suppressing the amount of convex deformation of the decoupling membrane 12 towards the compensation chamber 104, reducing the force and speed of the decoupling membrane 12 hitting the flow channel assembly 1 downward, and reducing the risk of abnormal noise of the decoupling membrane 12. In addition, when the pressure in the upper medium chamber 2011 is less than the pressure in the lower medium chamber 2012, the pressure in the working chamber 103 connected to the upper medium chamber 2011 is also less than the pressure in the compensation chamber 104 connected to the lower medium chamber 2012. The decoupling membrane 12 bulges and deforms towards the working chamber 103, the volume of the compensation chamber 104 increases, and the lower medium chamber 2012 can quickly flow into the compensation chamber 104 through the shorter compensation flow channel 102 to quickly fill the space in the compensation chamber 104, so that the decoupling membrane 12 is supported by the damping medium on the side facing the compensation chamber 104, reducing the rebound amount of the decoupling membrane 12 after hitting the flow channel assembly 1 upward, and reducing the risk of abnormal noise caused by multiple beatings of the decoupling membrane 12.

[0062] According to the mounting assembly 100 of the embodiment of the present invention, the working chamber 103 and the compensation chamber 104 are located on both sides of the decoupling membrane 12. The compensation chamber 104 is connected to the lower medium chamber 2012 through the compensation flow channel 102, and the length of the compensation flow channel 102 is less than the length of the main flow channel 101, so as to improve the absorption effect of the mounting assembly 100 on high-frequency small-amplitude vibrations, and can also reduce the risk of abnormal noise of the mounting assembly 100 during low-frequency large-amplitude vibrations. The mounting assembly 100 can suppress vibrations within a large vibration frequency range and has high reliability.

[0063] In some embodiments of the present invention, the flow area of the compensation flow channel 102 is smaller than the flow area of the main flow channel 101. When the damping medium in the working chamber 103 and the lower medium chamber 2012 is exchanged through the compensation flow channel 102, the compensation flow channel 102 with a smaller flow area can increase the flow rate of the damping medium, which is beneficial to reducing the dynamic characteristics of the mounting assembly 100.

[0064] In some embodiments of the present invention, refer toFigure 6 As shown, the axis of the compensation chamber 104, the axis of the working chamber 103, and the axis of the flow channel housing 11 coincide. The compensation flow channel 102 is wound around the outside of the compensation chamber 104, and the main flow channel 101 is wound around the outside of the compensation flow channel 102.

[0065] Specifically, the flow channel housing 11 can be a cylindrical structure, and the axis of the flow channel housing 11 can be parallel to Figure 6 the up-and-down direction in []. Both the compensation chamber 104 and the working chamber 103 can be located at the axial center position of the flow channel housing 11, so that the acting forces of the damping medium in the compensation chamber 104 and the working chamber 103 on the decoupling membrane 12 are approximately coincident with the axis of the flow channel housing 11, thereby improving the stability of the flow channel assembly 1. In addition, since the length of the compensation flow channel 102 is less than the length of the main flow channel 101, and the compensation flow channel 102 also needs to communicate with the compensation chamber 104, therefore, in the radial direction of the flow channel housing 11, the compensation chamber 104, the compensation flow channel 102, and the main flow channel 101 are arranged in sequence from inside to outside, which is convenient for the processing and manufacturing of the flow channel housing 11. At the same time, both the compensation flow channel 102 and the main flow channel 101 can be arc-shaped flow channels, improving the space utilization rate inside the flow channel housing 11.

[0066] In some embodiments of the present utility model, with reference to Figures 3 - 11 as shown, the flow channel housing 11 includes: a flow channel upper plate 111, a flow channel core body 112, and a flow channel lower plate 113. The flow channel upper plate 111 has an upper flow channel hole 1111 and a working hole 1112. The flow channel core body 112 has a main flow channel groove 1121, a lower flow channel hole 1122, a core body hole 1123, and a compensation flow channel groove 1124. The flow channel lower plate 113 has a compensation hole 1131.

[0067] Among them, the flow channel upper plate 111 and the flow channel lower plate 113 are connected to both sides of the flow channel core body 112. The main flow channel groove 1121 and the flow channel upper plate 111 jointly define the main flow channel 101. The main flow channel 101 communicates with the upper medium chamber 2011 through the upper flow channel hole 1111, and the main flow channel 101 communicates with the lower medium chamber 2012 through the lower flow channel hole 1122. The compensation flow channel groove 1124 and the flow channel lower plate 113 jointly define the compensation flow channel 102. The compensation flow channel 102 communicates with the lower medium chamber 2012 through the compensation hole 1131. The decoupling membrane 12 is arranged between the flow channel upper plate 111 and the flow channel core body 112. The flow channel upper plate 111 and the decoupling membrane 12 jointly define the working chamber 103. The working chamber 103 communicates with the upper medium chamber 2011 through the working hole 1112. The decoupling membrane 12, the core body hole 1123, and the flow channel lower plate 113 jointly define the compensation chamber 104.

[0068] Specifically, the decoupling membrane 12 can be disposed in the space formed by the flow channel core 112 and the flow channel upper plate 11. The flow channel upper plate 111 can be connected to the upper side of the flow channel core 112, and the flow channel upper plate 111 can be detachably connected to the flow channel core 112 to facilitate the assembly of the decoupling membrane 12 between the flow channel upper plate 111 and the flow channel core 112. The upper side of the flow channel core 112 can be provided with upper clamping claws 1125 and upper positioning protrusions 1126, and the flow channel upper plate 111 can be provided with upper positioning holes 1114 and upper clamping holes 1115. The upper positioning holes 1114 can be in positioning cooperation with the upper positioning protrusions 1126 in the circumferential direction of the flow channel housing 11, and the upper clamping holes 1115 can be in clamping cooperation with the upper clamping claws 1125 in the axial direction of the flow channel housing 11 to facilitate the assembly of the flow channel upper plate 111 and the flow channel core 112.

[0069] The flow channel lower plate 113 can be connected to the lower side of the flow channel core 112, and the flow channel lower plate 113 can be detachably connected to the flow channel core 112 to facilitate the assembly and maintenance of the flow channel housing 11. The lower side of the flow channel core 112 can be provided with lower clamping claws 1127 and lower positioning protrusions 1128, and the flow channel lower plate 113 can be provided with lower positioning holes 1132 and lower clamping holes 1133. The lower positioning holes 1132 can be in positioning cooperation with the lower positioning protrusions 1128 in the circumferential direction of the flow channel housing 11, and the lower clamping holes 1133 can be in clamping cooperation with the lower clamping claws 1127 in the axial direction of the flow channel housing 11 to facilitate the assembly of the flow channel lower plate 113 and the flow channel core 112.

[0070] Both the flow channel upper plate 111 and the flow channel lower plate 113 can be circular plates. The upper flow channel holes 1111 and working holes 1112 on the flow channel upper plate 111, and the compensation holes 1131 on the flow channel lower plate 113 are convenient to process. The flow channel core 112 is formed with a main flow channel groove 1121, a lower flow channel hole 1122, a core hole 1123, and a compensation flow channel groove 1124. The core hole 1123 is located at the center of the flow channel core 112. The compensation flow channel groove 1124 is communicated with the core hole 1123, the lower flow channel hole 1122 is communicated with the main flow channel groove 1121, the main flow channel groove 1121 is wound around the outside of the compensation flow channel groove 1124, the notch of the main flow channel groove 1121 faces the flow channel upper plate 111, and the notch of the compensation flow channel groove 1124 faces the flow channel lower plate 113. By splitting the flow channel housing 11 into the flow channel upper plate 111, the flow channel core 112, and the flow channel lower plate 113, the manufacturing difficulty and manufacturing cost of the flow channel housing 11 can be reduced.

[0071] Optionally, the flow channel upper plate 111, the flow channel core 112, and the flow channel lower plate 113 are all made of PA66 (nylon-66) material and are formed by an integral injection molding process to facilitate the manufacturing of the flow channel upper plate 111, the flow channel core 112, and the flow channel lower plate 113.

[0072] In some embodiments of the present utility model, referring to Figure 4As shown, the core hole 1123 includes: a first hole section 11231 and a second hole section 11232. The aperture of the first hole section 11231 is larger than that of the second hole section 11232. The first hole section 11231 communicates with the compensation flow channel groove 1124 through the second hole section 11232. The decoupling membrane 12 is installed in the first hole section 11231, and the orthographic projection of the second hole section 11232 on the decoupling membrane 12 is located within the decoupling membrane 12.

[0073] Specifically, the core hole 1123 can be a stepped hole structure. The aperture of the first hole section 11231 is larger than that of the second hole section 11232. A connecting surface 11233 opposite to the flow channel upper plate 111 is formed between the first hole section 11231 and the second hole section 11232. The first hole section 11231 and the second hole section 11232 can be coaxially connected. The first hole section 11231 is located on the side of the core hole 1123 close to the flow channel upper plate 111, and the second hole section 11232 is located on the side of the core hole 1123 close to the flow channel lower plate 113 and communicates with the compensation flow channel groove 1124. The orthographic projection of the second hole section 11232 on the decoupling membrane 12 is located within the decoupling membrane 12. In other words, the projection of the second hole section 11232 along its axial direction is located within the decoupling membrane 12. That is to say, in the radial direction of the second hole section 11232, the size of the decoupling membrane 12 is larger than the aperture of the second hole section 11232. The first hole section 11231 can be used to accommodate the decoupling membrane 12. The flow channel upper plate 111 and the connecting surface 11233 can limit the deformation amount of the decoupling membrane 12 in the up and down direction to prevent excessive deformation of the decoupling membrane 12 and damage. Among them, the decoupling membrane 12 can be a circular membrane, and the axis of the decoupling membrane 12 can be collinear with the axis of the first hole section 11231 to ensure the stability of the decoupling membrane 12 during operation.

[0074] In some embodiments of the present invention, referring to Figures 4 - 7 、 Figure 12 and Figure 13 As shown, the decoupling membrane 12 includes: a sealing membrane ring 121 and a working membrane sheet 122. The working membrane sheet 122 is connected to the inner side of the sealing membrane ring 121. The thickness of the sealing membrane ring 121 is greater than the hole depth of the first hole section 11231, and the thickness of the working membrane sheet 122 is less than the hole depth of the first hole section 11231.

[0075] Specifically, the sealing film ring 121 can be an annular structure, the working diaphragm 122 can be a circular structure, the working diaphragm 122 is connected to the radially inner side of the sealing film ring 121, the decoupling film 12 is thin in the middle and thick at the edges. In the axial direction of the decoupling film 12, the thickness of the sealing film ring 121 is greater than the hole depth of the first hole section 11231. The sealing film ring 121 can be clamped and fixed by the runner upper plate 111 and the connecting surface 11233 to form an interference fit. The sealing film ring 121 can form a sealing effect at the connection between the first hole section 11231 and the runner upper plate 111, avoiding the direct exchange of damping medium between the working chamber 103 and the compensation chamber 104. The thickness of the working diaphragm 122 is less than the hole depth of the first hole section 11231, so that the working diaphragm 122 can move up and down in the first hole section 11231 for vibration reduction.

[0076] In some embodiments of the present invention, the reference body 4 and Figure 9 As shown, at least one of the connecting surface 11233 and the runner upper plate 111 is provided with an annular limiting groove 114. A part of the sealing film ring 121 is arranged in the annular limiting groove 114. The annular limiting groove 114 can limit the sealing film ring 121 to prevent the sealing film ring 121 from shifting, and improve the reliability of the connection between the decoupling film 12 and the runner housing 11.

[0077] In some embodiments of the present invention, refer to Figures 4 - 7 、 Figure 12 and Figure 13 As shown, the working diaphragm 122 includes: a circular thinning part 1221, an annular convex part 1222 and an annular connecting part 1223. Along the radial direction of the circular thinning part 1221, the circular thinning part 1221, the annular convex part 1222, the annular connecting part 1223 and the sealing film ring 121 are connected in sequence. Along the thickness direction of the working diaphragm 122, the circular thinning part 1221 corresponds to the second hole section 11232 and the working hole 1112 respectively, and at least part of the annular connecting part 1223 is offset from the second hole section 11232.

[0078] Among them, the decoupling film 12 has an open state and a closed state. Refer to Figure 4 As shown, in the open state, the annular convex part 1222 is separated from the hole wall of the second hole section 11232, so that the first hole section 11231 is communicated with the second hole section 11232. Refer to Figure 5 As shown, in the closed state, the annular convex part 1222 is in abutting fit with the hole wall of the second hole section 11232, so that the first hole section 11231 is not communicated with the second hole section 11232.

[0079] Specifically, when high-frequency and small-amplitude vibrations are transmitted to the mounting assembly 100, the working diaphragm 122 undergoes small-amplitude up-and-down deformation. Since the thickness of the working diaphragm 122 is less than the hole depth of the first hole section 11231, the small-amplitude up-and-down deformation of the working diaphragm 122 can still keep the annular convex portion 1222 separated from the hole wall of the second hole section 11232. At this time, the decoupling film 12 is in an open state, and the circular thinning portion 1221, the annular convex portion 1222, and the annular connecting portion 1223 of the working diaphragm 122 can be deformed as a whole to absorb vibrations. Moreover, the first hole section 11231 communicates with the second hole section 11232. When the working diaphragm 122 is deformed as a whole, the effective volume of the compensation cavity 104 is the space of the first hole section 11231 below the working diaphragm 122 and the space of the second hole section 11232. The first hole section 11231 and the second hole section 11232 can exchange damping media with the lower medium chamber 2012 through the compensation flow channel 102. The working diaphragm 122 is affected by the damping media in the first hole section 11231 as a whole, having a good vibration damping effect.

[0080] When low-frequency and large-amplitude vibrations are transmitted to the mounting assembly 100, the working diaphragm 122 undergoes large-amplitude up-and-down deformation. When the amount of convex deformation of the decoupling film 12 towards the lower compensation cavity 104 is large, the annular convex portion 1222 abuts and cooperates with the hole wall of the second hole section 11232, and the decoupling film 12 is in a closed state. At this time, the first hole section 11231 does not communicate with the second hole section 11232, and the effective volume of the compensation cavity 104 is the space of the second hole section 11232. The circular thinning portion 1221 can continue to bulge and deform towards the second hole section 11232 below. The annular convex portion 1222 can block the damping media in the second hole section 11232 from flowing into the gap between the annular connecting portion 1223 and the connecting surface 11233, causing the medium pressure in the second hole section 11232 to increase rapidly. Thus, the circular thinning portion 1221 is supported by the damping media in the second hole section 11232, thereby suppressing the amount of convex deformation of the circular thinning portion 1221, reducing the force and speed of the decoupling film 12 hitting the flow channel core 112 downward, and reducing the risk of abnormal noise of the decoupling film 12.

[0081] In some embodiments of the present utility model, referring to Figures 4 - 7 、 Figure 12 and Figure 13 as shown, in the direction from the sealing film ring 121 to the annular convex portion 1222, the thickness of the annular connecting portion 1223 first increases and then decreases.

[0082] Specifically, in the radial direction of the annular connecting portion 1223, both ends of the annular connecting portion 1223 are thin and the middle is thick. The cross-sectional shape of the annular connecting portion 1223 can be wedge-shaped. When the decoupling film 12 generates a large deformation, the thicker part of the annular connecting portion 1223 can first abut against the flow channel upper plate 111 or the connecting surface 11233 to buffer the impact of the decoupling film 12 on the flow channel housing 11 and reduce the risk of abnormal noise caused by the impact of the decoupling film 12.

[0083] In some embodiments of the present utility model, referring to Figure 13 as shown, the decoupling film 12 is centrosymmetric with respect to its axis X, and the decoupling film 12 is mirror-symmetric with respect to the Y plane. The Y plane is perpendicular to the axis X. The cross-sectional plane of the decoupling film 12 is in the shape of a "flying disc". The outer side wall of the annular convex portion 1222 is inclined with respect to the axis X. The thickness of the sealing film ring 121 is H1, the maximum thickness of the annular connecting portion 1223 is H2, the maximum thickness of the annular convex portion 1222 is H3, the thickness of the circular thinning portion 1221 is E, the outer diameter of the annular convex portion 1222 is D1, the diameter of the circular thinning portion 1221 is D2, and the median diameter of the annular convex portion 1222 is D3, satisfying the relational expressions: H1 > H2, H1 > H3, 2.5 mm ≤ H2 ≤ 6 mm, 2.5 mm ≤ H3 ≤ 6 mm, 15 mm ≤ D1 ≤ 20 mm, 7 mm ≤ D2 ≤ 12 mm, 12 mm ≤ D3 ≤ 17 mm. The above part size ranges can effectively control the size and can play a good role in improving the NVH problem in the actual vehicle application. The specific values can be adjusted within the above ranges according to the actual requirements of the vehicle.

[0084] In some embodiments of the present utility model, referring to Figure 5 、 Figure 6 and Figure 8 as shown, the flow channel upper plate 111 further has a plurality of communication holes 1113. In the up-down direction, the communication holes 1113 can correspond to the connecting surface 11233. The upper medium chamber 2011 can be communicated with the working chamber 103 through the communication holes 1113. The communication holes 1113 can improve the damping medium exchange speed between the upper medium chamber 201 and the working chamber 103, thereby improving the response speed of the decoupling film 12, optimizing the change of the actuation stiffness of the mounting assembly 100, and improving the vehicle NVH performance.

[0085] Referring to Figure 5 、 Figure 6 and Figure 8 as shown, a plurality of communication holes 1113 are arranged at intervals in the circumferential and radial directions of the flow channel upper plate 111. The flow channel upper plate 111 can form an annular structure between the plurality of communication holes 1113 and the working holes 1112 for limiting the decoupling film 12.

[0086] In some embodiments of the present utility model, referring to Figures 1 - 3As shown, the suspension body 2 includes: a main spring assembly 21 and a housing assembly 22. The housing assembly 22 includes: an upper housing 221, a lower housing 222, and a leather cup 223. The upper housing 221 is connected to the lower housing 222, and the leather cup 223 is connected to the lower housing 222. The main spring assembly 21 passes through the upper housing 221 and is connected to the inner wall of the lower housing 222. The main spring assembly 21, the lower housing 222, and the leather cup 223 jointly define a medium cavity 201.

[0087] Specifically, the main spring assembly 21 is adapted to be connected to a longitudinally arranged engine, and the housing assembly 22 is adapted to be connected to the vehicle body. The upper housing 221 and the lower housing 222 can be connected by riveting, and the leather cup 223 can be connected to the lower housing 222 by spin riveting. The main spring assembly 21 passes through the upper housing 221, and the main spring assembly 21 can be fixedly connected to the inner wall of the lower housing 222. The main spring assembly 21, the lower housing 222, and the leather cup 223 jointly define a medium cavity 201. The flow channel assembly 1 is arranged in the medium cavity 201 and divides the medium cavity 201 into an upper medium cavity 2011 and a lower medium cavity 2012. The upper medium cavity 2011 is located between the main spring assembly 21 and the flow channel assembly 1, and the lower medium cavity 2012 is located between the flow channel assembly 1 and the leather cup 223. When the engine is working, the vibration generated can change the shape of the main spring assembly 21, thereby causing changes in the volume and medium pressure of the upper medium cavity 2011. Through the deformation of the leather cup 223, the volume and medium pressure of the lower medium cavity 2012 can be adapted to ensure the smooth exchange of damping medium between the upper medium cavity 2011 and the lower medium cavity 2012 through the flow channel assembly 1. The leather cup 223 can be formed by vulcanizing natural rubber, and the leather cup 223 has good elasticity and sealing performance.

[0088] Refer to Figures 1 - 3 As shown, the upper housing 221 may be provided with an upper housing mounting hole, and the lower housing 222 may be provided with a lower housing mounting hole. After the upper housing 221 and the lower housing 222 are connected, the upper housing mounting hole and the lower housing mounting hole jointly form a vehicle body mounting hole 224. Fasteners can pass through the vehicle body mounting hole 224 and be fixed to the vehicle body. Among them, an insert ring may be provided in the vehicle body mounting hole 224 to reduce the wear of the vehicle body mounting hole 224 and improve the service life of the suspension assembly 100.

[0089] Refer to Figure 9 As shown, the lower housing 222 may be provided with a housing filling port, and the flow channel core 112 is provided with a flow channel filling port 1129 opposite to the housing filling port. The damping medium can be injected into the medium cavity 201 through the housing filling port and the flow channel filling port 1129. After the injection is completed, a steel ball with an interference fit with it can be installed at the flow channel filling port 1129 to form a seal.

[0090] In some embodiments of the present invention, refer to Figures 1 - 3As shown, the main spring assembly 21 includes: a main spring inner core 211, a main spring 212, and a main spring base 213. The main spring inner core 211 passes through the upper housing 221. The main spring 212 is connected to the main spring inner core 211. The main spring 212 is in interference fit with the inner wall of the lower housing 222. The main spring base 213 is disposed inside the main spring 212 at the mating portion of the main spring 212 and the lower housing 222.

[0091] Specifically, the main spring 212 can be a rubber part. The main spring inner core 211 and the main spring base 213 can be bonded to the main spring 212 through a rubber vulcanization process. The main spring inner core 211 passes through the upper housing 221. A bolt 2111 can be installed on the main spring inner core 211, and the bolt 2111 can be connected to the engine of the vehicle. The main spring base 213 is disposed inside the main spring 212 at the mating portion of the main spring 212 and the lower housing 222. The main spring base 213 can support the main spring 212 to enhance the connection strength between the main spring 212 and the inner wall of the lower housing 222.

[0092] In some embodiments of the present invention, referring to Figures 1 - 3 As shown, the mounting assembly 100 further includes a limiting assembly 23. The limiting assembly 23 includes: a limiting block skeleton 231 and a limiting block colloid 232. The limiting block colloid 232 can be a rubber part. The limiting block skeleton 231 is adhesively connected to the limiting block colloid 232 through a rubber vulcanization process. The limiting block skeleton 231 can be sleeved on the radial outer side of the main spring inner core 211. The limiting block colloid 232 is disposed inside the upper housing 221. The main spring 212 has a limiting surface 2121 opposite to the inner wall of the upper housing 221 in the up and down direction. The limiting block colloid 232 is disposed between the inner wall of the upper housing 221 and the limiting surface 2121 in the up and down direction. The limiting block colloid 232 can limit and buffer the bouncing of the main spring 212 in the up and down direction.

[0093] In some embodiments of the present invention, referring to Figure 1 As shown, one side of the limiting block colloid 232 facing the inner wall of the upper housing 221 is provided with a wavy groove to absorb the impact force on the upper housing 221 through the deformation of the limiting block colloid 232. The main spring assembly 21 further includes a main spring inner skeleton 214. The main spring inner skeleton 214 is disposed inside the main spring 212 and corresponds to the limiting surface 2121. The main spring inner skeleton 214 can enhance the strength of the main spring 212 and reduce the deformation amount of the main spring 212 when the limiting surface 2121 collides with the limiting block colloid 232.

[0094] In some embodiments of the present invention, referring to Figure 2 As shown, the mounting assembly 100 further includes a heat shield 3. The heat shield 3 is sleeved on the limiting assembly 23. The heat shield 3 can block the heat of the engine, reduce the temperature of the main spring assembly 21, so as to slow down the aging speed of the main spring assembly 21 and improve the service life of the mounting assembly 100.

[0095] In some specific embodiments of the present utility model, under the action of a high-frequency and small-amplitude force, a slight structural deformation occurs in the middle region of the decoupling film 12, rapidly changing the pressures in the upper medium chamber 2011 and the lower medium chamber 2012 to make them tend to be stable, thereby reducing the dynamic performance of the mounting assembly 100. Moreover, the compensation flow channel 102 is short in length and small in flow area, and the damping medium in the compensation chamber 104 will quickly respond to rapidly reduce the dynamic characteristics of the mounting assembly 100.

[0096] Under the action of a low-frequency and large-amplitude force, a large-displacement structural deformation occurs in the middle region of the decoupling film 12. The decoupling film 12 adheres to the flow channel upper plate 111 or the flow channel core 112 in the up and down directions. At the same time, the main flow channel 101 starts to exchange the damping medium between the upper medium chamber 2011 and the lower medium chamber 2012. Moreover, the compensation flow channel 102 is short in length and small in flow area, and the damping liquid in the compensation chamber 104 will quickly respond. When the decoupling film 12 adheres downward to the flow channel core 112, the damping medium in the compensation chamber 104 quickly enters the lower medium chamber 2012 through the compensation flow channel 102. At this time, it will interact with the rapidly increasing pressure in the lower medium chamber 2012, thereby reducing the force and speed of the decoupling film 12 hitting the flow channel core 112 and avoiding abnormal noise. When the decoupling film 12 adheres to the flow channel upper plate 111, due to the upward deformation of the decoupling film 12, the damping medium in the lower medium chamber 2012 quickly enters the compensation chamber 104 through the compensation flow channel 102. The exchange of the damping medium between the compensation chamber 104 and the lower medium chamber 2012 can support the deformation of the decoupling film 12 and interact with the rapidly increasing pressure in the upper medium chamber 2011, thereby reducing the force and speed of the decoupling film 12 hitting the flow channel upper plate 111 and avoiding abnormal noise.

[0097] Due to the structural feature that the decoupling film 12 is thin in the middle and thick at the edges, and with the auxiliary action of the compensation chamber 104 and the compensation flow channel 102, the decoupling film 12 can replace the controller inside the active hydraulic mount and the semi-active hydraulic mount, making the mounting assembly 100 more robust and reliable.

[0098] A vehicle according to another embodiment of the present utility model includes the mounting assembly 100 of the above embodiment.

[0099] For a vehicle according to an embodiment of the present utility model, the working chamber 103 and the compensation chamber 104 of the mounting assembly 100 are located on both sides of the decoupling film 12. The compensation chamber 104 is communicated with the lower medium chamber 2012 through the compensation flow channel 102, and the length of the compensation flow channel 102 is less than the length of the main flow channel 101 to improve the absorption effect of the mounting assembly 100 on high-frequency and small-amplitude vibrations, and can also reduce the risk of abnormal noise of the mounting assembly 100 during low-frequency and large-amplitude vibrations. The mounting assembly 100 can suppress vibrations within a large vibration frequency range, thereby providing good driving comfort for the whole vehicle.

[0100] The working principle of the mounting assembly 100 according to the embodiment of the present utility model is as follows:

[0101] Under the normal driving condition of the whole vehicle, the main spring 212 passively receives the vibration frequency transmitted by the powertrain (engine). When the decoupling membrane 12 undergoes high-frequency vibration (the amplitude is on the order of 0.1 mm), due to the pressure difference between the upper medium chamber 2011 and the lower medium chamber 2012, the decoupling membrane 12 vibrates with an amplitude of 0.1 mm. Since the small vibration amplitude is not sufficient to make the annular protrusion 1222 of the decoupling membrane 12 contact the side wall of the compensation chamber 104, the central channel (the connection between the second hole section 11232 and the first hole section 11231) of the compensation chamber 104 will not be blocked. The annular protrusion 1222 of the decoupling membrane 12 is in an open state, and the working diaphragm 122 of the decoupling membrane 12 will not contact the runner upper plate 111 and the runner core 112, so that the main runner 101 and the compensation runner 102 contribute to the damping characteristics of the mounting assembly 100.

[0102] In the state of high-frequency and low amplitude, since the damping medium cannot flow due to high-frequency hardening, the main spring assembly 21 and the decoupling membrane 12 can deform to attenuate energy. Therefore, the decoupling membrane 12 between the upper medium chamber 2011 and the lower medium chamber 2012 is made of rubber and has the structural feature of a thin center, which is extremely easy to deform, making the dynamic stiffness value lower than that of the original structure in this working condition. And because the compensation runner 102 is short and narrow, the damping medium in the compensation chamber 104 will quickly respond (flow from the compensation chamber 104 into the lower medium chamber 2012 or flow from the lower medium chamber 2012 into the compensation chamber 104 through the compensation runner 102), rapidly reducing the dynamic characteristics of the mounting assembly 100.

[0103] Specifically, under the normal driving condition of the whole vehicle, the main spring 212 passively receives the vibration frequency transmitted by the powertrain. When the decoupling membrane 12 is subjected to low-frequency vibration (the amplitude is greater than 1 mm), the working principle of the mounting assembly 100 is as follows:

[0104] When there is low-frequency vibration and the pressure is downward, the decoupling membrane 12 deflects, and the annular protrusion 1222 of the decoupling membrane 12 forms a closing device that abuts against the central opening of the second hole section 11232, blocking the central channel of the compensation chamber 104. At this time, the thicker part of the annular connecting portion 1223 is pressed against the connecting surface 11233 of the flow channel core 112. The pressure in the compensation chamber 104 increases rapidly due to the blockage of the central channel and the deformation of the circular thinning portion 1221. Part of the damping medium will enter the lower medium chamber 2012 through the compensation flow channel 102. At the same time, the main flow channel 101 also contributes to the damping characteristics of the suspension assembly 100. The upper medium chamber 2011 and the lower medium chamber 2012 exchange damping medium through the main flow channel 101. Due to the pressure in the lower medium chamber 2012, the damping medium in the compensation chamber 104 will enter the lower medium chamber 2012 through the compensation flow channel 102. Since the compensation flow channel 102 is a ring-shaped flow channel structure, its small cross-sectional area results in a slow release of the pressure in the compensation chamber 104, acting on the decoupling membrane 12 to support the circular thinning portion 1221 of the decoupling membrane 12 and prevent the decoupling membrane 12 from slapping against the flow channel core 112 and generating abnormal noises. Among them, the pressure in the lower medium chamber 2012 increases due to the inflow of the damping medium in the main flow channel 101, which will interact with the damping medium flowing out of the compensation flow channel 102 and slow down the damping medium flowing out of the compensation chamber 104. Thereby increasing the damping peak range and reducing the dynamic characteristics of the suspension assembly 100.

[0105] When there is low-frequency vibration and the pressure is upward, the decoupling membrane 12 deflects, and the annular protrusion 1222 of the decoupling membrane 12 forms a closing device that abuts against the outer edge of the working hole 1112, opening the central channel of the compensation chamber 104. At this time, the thicker part of the annular connecting portion 1223 is pressed against the flow channel upper plate 111. The pressure in the compensation chamber 104 increases due to the opening of the central channel and the upward protrusion of the decoupling membrane 12, and the compensation flow channel 102 works. Most of the damping medium in the lower medium chamber 2012 exchanges between the lower medium chamber 2012 and the upper medium chamber 2011 through the main flow channel 101, and a small part of the damping medium enters the compensation chamber 104 from the lower medium chamber 2012 through the compensation flow channel 102. Since the compensation flow channel 102 is a ring-shaped flow channel structure, it can generate a large impact force, acting on the decoupling membrane 12 to support the working diaphragm 122 of the decoupling membrane 12 and prevent the decoupling membrane 12 from slapping against the flow channel upper plate 111 and generating abnormal noises. Among them, the pressure in the upper medium chamber 2011 increases due to the inflow of the damping medium and will interact with the pressure in the compensation chamber 104 on the lower surface of the decoupling membrane 12, thereby increasing the damping peak range and reducing the dynamic characteristics of the suspension assembly 100.

[0106] Under the vibration condition of low frequency and large amplitude, the suspension assembly 100 can generate higher damping and increase the peak frequency range, avoiding abnormal noises generated by the decoupling membrane 12 and the flow channel housing 11.

[0107] The suspension assembly 100 according to the embodiments of the present utility model has at least the following technical features:

[0108] 1. The suspension assembly 100 has a dual-channel structure composed of a main flow channel 101 and a compensation flow channel 102. By setting the compensation flow channel 102, the dynamic stiffness and damping of the suspension assembly 100 can be changed according to the magnitude of the input amplitude and the high or low frequency, providing good driving comfort for the vehicle NVH.

[0109] 2. The decoupling film 12 is designed with a "flying disc" shape in the cross-section. The thickness of the middle circular thinning part 1221 is thin, and the annular convex part 1222, the annular connecting part 1223, and the sealing film ring 121 form three annular protrusions. The circular thinning part 1221 is the center of the decoupling film 12 and has a thin thickness. The thickness of the circular thinning part 1221 can adjust the size based on the magnitude of the input amplitude to improve its sensitivity. The circular thinning part 1221 has the characteristics of high sensitivity and being extremely easy to deform, so as to reduce the dynamic stiffness of the suspension assembly 100. The annular convex part 1222 is a convex annular closed structure and is arranged around the circular thinning part 1221. The convex structure of the annular convex part 1222 faces the inner wall of the second hole section 11232 of the flow channel core 112 and can buckle the inner wall of the second hole section 11232. The cross-section of the annular connecting part 1223 is a wedge-shaped structure, which can strengthen the structural strength of the decoupling film 12. The thicker part of the annular connecting part 1223 can be attached to the flow channel upper plate 111 or the flow channel core 112 and play a role in supporting and limiting. The sealing film ring 121 is the outermost convex part of the decoupling film 12 with the thickest thickness, and has an interference fit with the flow channel upper plate 111 and the flow channel core 112 to avoid direct exchange of damping medium between the medium chamber 2011 and the lower medium chamber 2012 at this position.

[0110] 3. The structure of the flow channel upper plate 111 and / or the flow channel core 112 that cooperates with the sealing film ring 121 of the decoupling film 12 adds an annular limiting groove 114, which is used to press the decoupling film 12 to prevent the decoupling film 12 from shifting. The compensation cavity 104 can be communicated with the outside only through the compensation flow channel 102.

[0111] 4. The flow channel upper plate 111 forms a circular ring structure between multiple communication holes 1113, and the circular ring structure corresponds to the thicker part of the annular connecting part 1223 in the up and down direction to limit the movement displacement of the decoupling film 12.

[0112] 5. The lower end face of the runner core body 112 is provided with a compensation runner groove 1124. The compensation runner groove 1124 and the runner lower plate 113 form a compensation runner 102. At the same time, the runner assembly 1 further forms a compensation cavity 104. Under the condition of low-frequency and large-amplitude working conditions, due to the vibration of the decoupling film 12, the damping medium in the compensation cavity 104 is forced passively. Through the compensation runner 102, the damping medium is exchanged with the lower medium chamber 2012. Through the pressure difference between the upper medium chamber 2011 and the lower medium chamber 2012, the damping medium generates a large impact force in the relatively narrow channel in the compensation runner 102 and acts on the decoupling film 12, playing a role in supporting the decoupling film 12, avoiding abnormal noise caused by the decoupling film 12 colliding with the runner housing 11, and at the same time reducing the dynamic stiffness value of the suspension assembly 100.

[0113] 6. When vibrations with high frequency and small amplitude are transmitted, the suspension assembly 100 can be vibration-damped through the main spring assembly 21. At the same time, the central thickness of the decoupling film 12 is smaller than the film thickness of traditional hydraulic mounts. The circular thinning part 1221 in the middle area of the decoupling film 12 generates slight structural deformation, quickly changing the pressure of the upper medium chamber 2011 and the lower medium chamber 2012 to make them tend to be stable, thereby reducing the dynamic performance of the suspension assembly 100. Moreover, the compensation runner 102 is short and narrow, and the damping medium in the compensation cavity 104 will quickly respond, rapidly reducing the dynamic characteristics of the suspension assembly 100.

[0114] 7. When vibrations with low frequency and large amplitude are transmitted, the main runner 101 in the suspension assembly 100 works, generating large damping and attenuating the amplitude. The pressure of the damping medium in the lower medium chamber 2012 will enter the compensation cavity 104 through the compensation runner 102 and act on the decoupling film 12 (or the damping medium in the compensation cavity 104 enters the lower medium chamber 2012 through the compensation runner 102). Due to the small cross-sectional area of the compensation runner 102, the flow change of the damping medium will support the deformation of the decoupling film 12, thereby reducing the force and speed of the decoupling film 12 hitting the runner assembly 1, avoiding abnormal noise, and at the same time increasing the damping frequency range of the suspension assembly 100 and increasing the damping value.

[0115] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0116] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A suspension assembly, characterized in that: include: A suspension body (2) and a flow channel assembly (1), wherein the suspension body (2) has a medium cavity (201), the flow channel assembly (1) is arranged in the medium cavity (201) and divides the medium cavity (201) into an upper medium chamber (2011) and a lower medium chamber (2012), and the flow channel assembly (1) comprises: A flow channel housing (11), the flow channel housing (11) comprising a main flow channel (101) and a compensation flow channel (102), the main flow channel (101) communicating with the upper medium chamber (2011) and the lower medium chamber (2012), the length of the compensation flow channel (102) being shorter than the length of the main flow channel (101); A decoupling membrane (12), wherein the decoupling membrane (12) is arranged in the flow channel housing (11), and the decoupling membrane (12) and the flow channel housing (11) jointly define a working chamber (103) and a compensation chamber (104), wherein the working chamber (103) is located on one side of the decoupling membrane (12) and is in communication with the upper medium chamber (2011), and the compensation chamber (104) is located on the other side of the decoupling membrane (12) and is in communication with the lower medium chamber (2012) via the compensation flow channel (102).

2. The suspension assembly according to claim 1, characterized in that: The axis of the compensation chamber (104), the axis of the working chamber (103) and the axis of the flow channel housing (11) coincide with each other; the compensation flow channel (102) is arranged around the outside of the compensation chamber (104); and the main flow channel (101) is arranged around the outside of the compensation flow channel (102).

3. The suspension assembly according to claim 1 or 2, characterized in that: The flow channel housing (11) comprises: A flow channel upper plate (111), wherein the flow channel upper plate (111) has an upper flow channel hole (1111) and a working hole (1112); A flow channel core (112), wherein the flow channel core (112) has a main flow channel groove (1121), a lower flow channel hole (1122), a core hole (1123) and a compensation flow channel groove (1124); A flow channel lower plate (113), wherein the flow channel lower plate (113) has a compensation hole (1131); The flow channel upper plate (111) and the flow channel lower plate (113) are connected to two sides of the flow channel core (112); the main flow channel groove (1121) and the flow channel upper plate (111) jointly define the main flow channel (101); the main flow channel (101) is connected to the upper medium chamber (2011) through the upper flow channel hole (1111); the main flow channel (101) is connected to the lower medium chamber (2012) through the lower flow channel hole (1122); the compensation flow channel groove (1124) and the flow channel lower plate (113) jointly define the compensation flow channel (102); the compensation flow channel (102) is connected to the lower medium chamber (2012) through the compensation hole (1131); The decoupling membrane (12) is arranged between the flow channel upper plate (111) and the flow channel core body (112); the flow channel upper plate (111) and the decoupling membrane (12) jointly define the working chamber (103); the working chamber (103) is connected to the upper medium chamber (2011) through the working hole (1112); the decoupling membrane (12), the core body hole (1123) and the flow channel lower plate (113) jointly define the compensation chamber (104).

4. The suspension assembly according to claim 3, characterized in that: The core hole (1123) comprises: a first hole section (11231) and a second hole section (11232); the aperture of the first hole section (11231) is larger than the aperture of the second hole section (11232); the first hole section (11231) is connected to the compensation flow channel groove (1124) via the second hole section (11232); the decoupling membrane (12) is mounted on the first hole section (11231); and the orthographic projection of the second hole section (11232) onto the decoupling membrane (12) is located inside the decoupling membrane (12).

5. The suspension assembly according to claim 4, characterized in that: The decoupling membrane (12) comprises: a sealing membrane ring (121) and a working membrane (122); the working membrane (122) is connected to the inner side of the sealing membrane ring (121); the thickness of the sealing membrane ring (121) is greater than the hole depth of the first hole section (11231); and the thickness of the working membrane (122) is less than the hole depth of the first hole section (11231).

6. The suspension assembly according to claim 5, characterized in that: The working diaphragm (122) comprises: a circular thinning portion (1221), an annular protrusion (1222) and an annular connecting portion (1223); along the radial direction of the circular thinning portion (1221), the circular thinning portion (1221), the annular protrusion (1222), the annular connecting portion (1223) and the sealing diaphragm ring (121) are sequentially connected; along the thickness direction of the working diaphragm (122), the circular thinning portion (1221) corresponds to the second hole segment (11232) and the working hole (1112), respectively; at least a portion of the annular connecting portion (1223) is staggered with the second hole segment (11232); The decoupling membrane (12) has an open state and a closed state. In the open state, the annular protrusion (1222) is separated from the hole wall of the second hole segment (11232) so that the first hole segment (11231) is connected to the second hole segment (11232). In the closed state, the annular protrusion (1222) is abutted against the hole wall of the second hole segment (11232) so that the first hole segment (11231) is not connected to the second hole segment (11232).

7. The suspension assembly according to claim 6, characterized in that: In the direction from the sealing membrane ring (121) to the annular protrusion (1222), the thickness of the annular connecting portion (1223) increases first and then decreases.

8. The suspension assembly according to claim 1, characterized in that: The suspension body (2) includes: a main spring assembly (21) and a shell assembly (22); the shell assembly (22) includes: an upper shell (221), a lower shell (222) and a leather cup (223); the upper shell (221) is connected to the lower shell (222); the leather cup (223) is connected to the lower shell (222); the main spring assembly (21) is inserted into the upper shell (221) and is connected to the inner wall of the lower shell (222); the main spring assembly (21), the lower shell (222) and the leather cup (223) jointly define the medium cavity (201).

9. The suspension assembly according to claim 8, characterized in that: The main spring assembly (21) comprises: A main spring inner core (211), wherein the main spring inner core (211) is inserted into the upper shell (221); A main spring (212), wherein the main spring (212) is connected to the main spring inner core (211), and the main spring (212) is interference-fitted with the inner wall of the lower housing (222); A main spring base (213) is arranged inside the main spring (212) at the position where the main spring (212) and the lower shell (222) cooperate.

10. A vehicle, characterized in that: Comprising a suspension assembly according to any one of claims 1-9.

Images