A feedback hydraulic mount

Abstract

The application discloses a feedback type hydraulic suspension, which comprises a shell, a rubber main spring and a vibration isolation mechanism, the rubber main spring and the shell form a sealed cavity, the vibration isolation mechanism divides the sealed cavity into an upper liquid chamber and a lower liquid chamber, and the feedback type hydraulic suspension further comprises a first adjusting rod, a second adjusting rod, a first one-way valve and a second one-way valve, wherein the vibration isolation mechanism comprises an elastic block, the elastic block comprises a fixed area and a deformation area, the fixed area is fixed with the shell, and the deformation area is located in the upper liquid chamber and the lower liquid chamber; the elastic block is provided with a liquid storage cavity, a second through hole and a third through hole, and the first one-way valve and the second one-way valve are installed on the elastic block; in the application, the feedback type hydraulic suspension is proposed, the rubber block is deformed to drive the first adjusting rod or the second adjusting rod to move, and then the communication conditions of the second communication hole, the fourth communication hole and the liquid storage cavity are adjusted; the deformation size of the rubber block is determined according to the vibration frequency, and then the rubber block is adapted to different frequencies.

Description

Technical Field

[0001] This invention relates to the field of engine vibration damping equipment technology, and in particular to a feedback hydraulic suspension. Background Technology

[0002] Hydraulic mounts for automotive engines refer to the elastic connection system between the engine powertrain and the vehicle frame. The design quality of this system directly affects the transmission of engine vibrations to the vehicle body, thus impacting the overall NVH (noise, vibration, and harshness) performance of the vehicle. Hydraulic mounts are crucial components of automobiles, primarily used to reduce vibrations transmitted from the engine to the vehicle body, control engine displacement, resist engine torque, and reduce impacts transmitted from the tires to the powertrain on uneven road surfaces. Therefore, hydraulic mounts are required to possess both excellent vibration isolation and shock absorption capabilities.

[0003] Existing hydraulic suspensions include a housing and a rubber main spring and vibration isolation mechanism housed within the housing. The vibration isolation mechanism has a through hole connecting the upper and lower fluid chambers. Because the diameter of the through hole is fixed, this hydraulic suspension can only achieve good vibration reduction within a certain frequency range. Patent publication number CN 105387122B, entitled "Semi-active Hydraulic Suspension," discloses a method that uses motor-controlled closure to meet different frequency requirements. The drawback of this patent is that controlling the size of the through hole with a motor, and the fact that the motor is located outside the housing, easily causes leakage from the lower fluid chamber. Summary of the Invention

[0004] To address the technical problems existing in the background art, the present invention proposes a feedback hydraulic suspension.

[0005] This invention proposes a feedback hydraulic suspension, comprising a housing, a rubber main spring, and a vibration isolation mechanism. The rubber main spring and the housing form a sealed cavity, and the vibration isolation mechanism is installed inside the sealed cavity and divides the sealed cavity into an upper fluid chamber and a lower fluid chamber. It also includes a first adjusting rod, a second adjusting rod, a first check valve, and a second check valve, wherein:

[0006] The vibration isolation mechanism includes an elastic block, which includes a fixed area and a deformation area. The fixed area is fixed to the housing, and the deformation area is located in the upper liquid chamber and the lower liquid chamber.

[0007] The elastic block has a liquid storage chamber. The first one-way valve is installed on the elastic block and allows the liquid in the upper liquid chamber to flow unidirectionally to the liquid storage chamber. The second one-way valve is installed on the elastic block and allows the liquid in the lower liquid chamber to flow unidirectionally to the liquid storage chamber.

[0008] The elastic block has a second connecting hole and a fourth connecting hole, which are located in the fixed area. The second connecting hole connects the liquid storage chamber to the upper liquid chamber, and the fourth connecting hole connects the liquid storage chamber to the lower liquid chamber.

[0009] One end of the first adjusting rod is installed on the deformation area of ​​the elastic block, and the other end of the first adjusting rod extends to the second connecting hole and adjusts the opening and closing of the second connecting hole;

[0010] One end of the second adjusting rod is installed in the deformation area of ​​the elastic block, and the other end of the second adjusting rod extends to the fourth connecting hole and is used to adjust the opening and closing of the fourth connecting hole.

[0011] As a further optimization of the present invention, the upper liquid chamber is conical and the cross-sectional area of ​​the upper liquid chamber gradually decreases from top to bottom, which facilitates the compression of the elastic block to cause it to deform, thereby facilitating the opening of the fourth connecting hole.

[0012] As a further optimization of the present invention, the inner diameter of the liquid storage chamber is larger than the minimum inner diameter of the liquid inlet chamber.

[0013] As a further optimization of the present invention, the lower liquid chamber is conical, and the cross-sectional area of ​​the lower liquid chamber gradually increases from top to bottom, which facilitates the compression of the elastic block to cause it to deform, thereby facilitating the opening of the second connecting hole.

[0014] As a further optimization of the present invention, the inner diameter of the liquid storage chamber is larger than the minimum inner diameter of the lower liquid chamber.

[0015] As a further optimization of the present invention, an elastic column is included, which is fixed on the elastic block and vertically penetrates the elastic block, and the first adjusting rod and the second adjusting rod are respectively fixed on the elastic column.

[0016] As a further optimization of the present invention, the upper end face of the elastic column is located in the upper liquid chamber, and the upper end face is an upwardly convex arc surface.

[0017] As a further optimization of the present invention, the lower end face of the elastic column is located in the lower liquid chamber, and the lower end face is a downwardly convex arc surface.

[0018] As a further optimization of the present invention, when the rubber main spring deforms toward the upper liquid chamber, the second adjusting rod opens the fourth connecting hole, and the second adjusting rod and the bottom of the elastic block form a lower adjustable liquid outlet. The greater the deformation of the rubber main spring, the greater the deformation of the elastic block, which in turn makes the lower adjustable liquid outlet larger.

[0019] As a further optimization of the present invention, when the rubber main spring deforms away from the upper liquid chamber, the first adjusting rod opens the second connecting hole, and the first adjusting rod and the top of the elastic block form an adjustable liquid outlet.

[0020] In this invention, the proposed feedback hydraulic suspension has a simple structure. The deformation of the rubber block drives the first or second adjusting rod to move, thereby adjusting the connection between the second and fourth connecting holes and the liquid storage chamber. The deformation of the rubber block is determined according to the vibration frequency, thus adapting it to different frequencies.

[0021] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 This is a cross-sectional view of the present invention;

[0024] Figure 3 This is a partial enlarged view of the adjustable liquid outlet when the rubber main spring of the present invention undergoes elastic deformation towards the upper liquid chamber;

[0025] Figure 4 This is a magnified view of the adjustable liquid storage port when the rubber main spring of the present invention undergoes elastic deformation away from the upper liquid chamber. Detailed Implementation

[0026] Embodiments of the present invention are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0027] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0029] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] like Figure 1-4 The feedback hydraulic suspension shown includes a housing 1, a rubber main spring 2, a vibration isolation mechanism, a first adjusting rod 3, a second adjusting rod 4, a first check valve 5, and a second check valve 6;

[0032] The rubber main spring 2 and the housing 1 form a sealed cavity, and the vibration isolation mechanism is installed in the sealed cavity and divides the sealed cavity into an upper liquid chamber 7 and a lower liquid chamber 8.

[0033] Specifically, the housing 1 includes an upper housing 10 and a lower housing 11. The upper housing 10 is fixed on the lower housing 11, and the rubber main spring 2 is fixed on the upper housing 10. The rubber main spring 2, the lower housing 11, and the upper housing 10 form a sealed cavity.

[0034] The vibration damping mechanism includes an elastic block 9, which includes a fixed area and a deformation area. The elastic block 9 is fixed between the upper housing 10 and the lower housing 11.

[0035] Specifically, the bottom of the upper housing 10 has an upper receiving groove 100, and the top of the lower housing 11 has a lower receiving groove 110. The upper receiving groove 100 and the lower receiving groove 110 form a fixed space. The part of the elastic block 9 that contacts the upper receiving groove 100 and the lower receiving groove 110 is the fixed area, and the part of the elastic block 9 located in the upper liquid chamber 7 and the part located in the lower liquid chamber 8 is the deformation area.

[0036] To further enhance the sealing performance, the upper housing 10 has an upper sealing ring groove 101 on the upper receiving groove 100, and the lower housing 11 has a lower sealing ring groove 111 on the lower receiving groove 110. The elastic block 9 is provided with a first sealing ring and a second sealing ring. The first sealing ring matches the upper sealing ring groove 101, and the second sealing ring matches the lower sealing ring groove 111.

[0037] The elastic block 9 has a liquid storage chamber 90 in the middle. A first one-way valve 5 is installed on the elastic block 9 and allows the liquid in the upper liquid chamber 7 to flow unidirectionally to the liquid storage chamber 90. A second one-way valve 6 is installed on the elastic block 9 and allows the liquid in the lower liquid chamber 8 to flow unidirectionally to the liquid storage chamber 90.

[0038] Specifically, the elastic block 9 has a first through hole 91 and a third through hole 92. The first through hole 91 connects the upper liquid chamber 7 and the liquid storage chamber 90, and the third through hole 92 connects the lower liquid chamber 8 and the liquid storage chamber 90. The first one-way valve 5 is installed in the first through hole 91, and the second one-way valve 6 is installed in the third through hole 92. Preferably, the first through hole 91 and the second connecting hole 93 are opened in the fixed area, and the upper housing 10 and the lower housing 11 have a first connecting hole and a second connecting hole 93. The first connecting hole connects the first through hole 91 and the upper liquid chamber 7, and the second connecting hole 93 connects the third through hole 92 and the lower liquid chamber 8.

[0039] The elastic block 9 has a second connecting hole 93 and a fourth connecting hole 94. The second connecting hole 93 and the fourth connecting hole 94 are located in the fixed area. The second connecting hole 93 connects the liquid storage chamber 90 to the upper liquid chamber 7, and the fourth connecting hole 94 connects the liquid storage chamber 90 to the lower liquid chamber 8.

[0040] One end of the first adjusting rod 3 is installed on the deformation area of ​​the elastic block 9, and the other end of the first adjusting rod 3 extends to the second connecting hole 93 and adjusts the opening and closing of the second connecting hole 93. The upper housing 10 has a first sliding groove 102, which connects the second connecting hole 93 to the upper liquid chamber 7. The first adjusting rod 3 slides in the first sliding groove 102.

[0041] One end of the second adjusting rod 4 is installed in the deformation area of ​​the elastic block 9, and the other end of the second adjusting rod 4 extends to the fourth connecting hole 94 and is used to adjust the opening and closing of the fourth connecting hole 94. A second sliding groove 112 is opened on the lower housing 11. The second sliding groove 112 connects the fourth connecting hole 94 with the lower liquid chamber 8. The second adjusting rod 4 slides in the second sliding groove 112.

[0042] Preferably, the upper liquid chamber 7 is conical and the cross-sectional area of ​​the upper liquid chamber 7 gradually decreases from top to bottom; and the inner diameter of the liquid storage cavity 90 is greater than the minimum inner diameter of the upper liquid chamber 7.

[0043] Preferably, the lower liquid chamber 8 is conical, and the cross-sectional area of ​​the lower liquid chamber 8 gradually increases from top to bottom, and the inner diameter of the liquid storage cavity 90 is greater than the minimum inner diameter of the lower liquid chamber 8.

[0044] Preferably, it includes an elastic column 12, which is fixed to the elastic block 9 and vertically penetrates the elastic block 9, and the first adjusting rod 3 and the second adjusting rod 4 are respectively fixed to the elastic column 12;

[0045] The upper end face of the elastic column 12 is located in the upper liquid chamber 7, and the upper end face is an upward convex arc surface. The lower end face of the elastic column 12 is located in the lower liquid chamber 8, and the lower end face is a downward convex arc surface.

[0046] When the rubber main spring 2 deforms towards the upper liquid chamber 7, the second adjusting rod 4 opens the fourth connecting hole 94, and the second adjusting rod 4 and the bottom of the elastic block 9 form a lower adjustable liquid outlet 13.

[0047] When the rubber main spring 2 deforms away from the upper liquid chamber 7, the first adjusting rod 3 opens the second connecting hole 93, and the first adjusting rod 3 and the top of the elastic block 9 form an adjustable liquid outlet 14.

[0048] In this embodiment, during operation: when the rubber main spring 2 does not deform, the first adjusting rod 3 blocks the second connecting hole 93, and the second adjusting rod 4 blocks the fourth connecting hole 94;

[0049] If the rubber main spring 2 deforms towards the upper liquid chamber 7, the first one-way valve 5 opens under the pressure change, and the liquid in the upper liquid chamber 7 flows into the storage chamber 90. The elastic block 9 and the elastic column 12 deform and move towards the lower liquid chamber 8, thereby driving the second adjusting rod 4 to move away from the fourth connecting hole 94. The second adjusting rod 4 and the bottom of the elastic block 9 form a lower adjustable liquid outlet 13. If the vibration frequency is higher, the lower adjustable liquid outlet 13 will be larger, thus adapting to different vibration frequencies.

[0050] If the rubber main spring 2 deforms away from the upper liquid chamber 7, under the change of pressure, the elastic block 9 and the elastic column 12 move away from the lower liquid chamber 8, thereby driving the first straight rod to move away from the second connecting hole 93. The first adjusting rod 3 and the top of the elastic block 9 form an adjustable liquid outlet 14. The larger the vibration frequency, the larger the adjustable liquid outlet 14. Due to the change of pressure, the second one-way valve 6 opens, allowing the liquid in the lower liquid chamber 8 to flow into the storage chamber 90, thereby adapting it to different vibration frequencies.

[0051] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A feedback hydraulic mount comprising a housing (1), a rubber main spring (2), and a vibration isolation mechanism, the rubber main spring (2) and the housing (1) forming a sealed chamber, the vibration isolation mechanism being installed in the sealed chamber and dividing the sealed chamber into an upper liquid chamber (7) and a lower liquid chamber (8), characterized in that, Further comprising a first adjusting rod (3), a second adjusting rod (4), a first one-way valve (5) and a second one-way valve (6), wherein: The vibration isolation mechanism comprises an elastic block (9), the elastic block (9) comprises a fixed area and a deformation area, the fixed area is fixed with the shell (1), and the deformation area is located in the upper liquid chamber (7) and the lower liquid chamber (8); The elastic block (9) has a liquid storage cavity (90), the first one-way valve (5) is installed on the elastic block (9) and makes the liquid in the upper liquid chamber (7) flow to the liquid storage cavity (90) in one way, and the second one-way valve (6) is installed on the elastic block (9) and makes the liquid in the lower liquid chamber (8) flow to the liquid storage cavity (90) in one way. The elastic block (9) is provided with a second communication hole (93) and a fourth communication hole (94), the second communication hole (93) and the fourth communication hole (94) are located in the fixed area, the second communication hole (93) communicates the liquid storage cavity (90) with the upper liquid chamber (7), and the fourth communication hole (94) communicates the liquid storage cavity (90) with the lower liquid chamber (8). One end of the first adjusting rod (3) is installed on the deformation area of the elastic block (9), and the other end of the first adjusting rod (3) extends to the second communication hole (93) and adjusts the opening and closing of the second communication hole (93). One end of the second adjusting rod (4) is installed on the deformation area of the elastic block (9), and the other end of the second adjusting rod (4) extends to the fourth communication hole (94) and is used for adjusting the opening and closing of the fourth communication hole (94). The elastic column (12) is fixed on the elastic block (9) and vertically penetrates the elastic block (9), and the first adjusting rod (3) and the second adjusting rod (4) are respectively fixed on two ends of the elastic column (12). The upper end surface of the elastic column (12) is located in the upper liquid chamber (7), and the upper end surface is an upwardly convex arc surface. The lower end surface of the elastic column (12) is located in the lower liquid chamber (8), and the lower end surface is a downwardly convex arc surface.

2. The feedback hydraulic mount of claim 1, wherein, The upper liquid chamber (7) is conical, and the cross-sectional area of the upper liquid chamber (7) gradually decreases from top to bottom.

3. The feedback hydraulic mount of claim 2, wherein, The inner diameter of the liquid storage cavity (90) is greater than the minimum inner diameter of the upper liquid chamber (7).

4. The feedback hydraulic mount of claim 1, wherein, The lower liquid chamber (8) is conical, and the cross-sectional area of the lower liquid chamber (8) gradually increases from top to bottom.

5. The feedback hydraulic mount of claim 4, wherein, The inner diameter of the liquid storage cavity (90) is greater than the minimum inner diameter of the lower liquid chamber (8).

6. The feedback hydraulic mount of claim 1, wherein, When the rubber main spring (2) deforms towards the upper liquid chamber (7), the second adjusting rod (4) opens the fourth communication hole (94), and the second adjusting rod (4) and the bottom of the elastic block (9) form a lower adjustable liquid outlet (13).

7. The feedback hydraulic mount of claim 1, wherein, When the rubber main spring (2) deforms away from the upper liquid chamber (7), the first adjusting rod (3) opens the second communication hole (93), and the first adjusting rod (3) and the top of the elastic block (9) form an upper adjustable liquid outlet (14).

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