A hydraulic flow channel system with low dynamic-static ratio

Abstract

A hydraulic flow channel system with a low dynamic-static ratio includes a flow channel base, a decoupling membrane and a flow channel cover plate. The flow channel base includes a first grid, and a flow channel is arranged outside the first grid; the decoupling membrane is arranged on the top of the first grid; the flow channel cover plate is arranged above the decoupling membrane, and a second grid and a flow channel inlet are arranged on the flow channel cover plate, and the flow channel inlet is located above the flow channel. A liquid filling port is arranged on one side of the flow channel base for injecting liquid. After the liquid is injected into the liquid filling port, it is sealed by a steel ball. The flow channel base is a plastic part, the decoupling membrane is a vulcanized rubber part, and the flow channel cover plate is a sheet metal part. In the utility model, when the vehicle is idling normally, the liquid in the main spring flows into the flow channel through the flow channel inlet on the flow channel cover plate to relieve the pressure of the flow channel system, which is used to reduce the dynamic stiffness value; when the vehicle is subjected to a large impact load, the liquid can pass through the decoupling membrane to generate a large damping, which is used to alleviate the bump load.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic suspension of vehicle engines, in particular to a hydraulic flow channel system with a low dynamic-static ratio. Background Art

[0002] With the development of the automobile industry, people have higher and higher requirements for the driving experience of automobiles. They are no longer limited to the previous pursuit of power and configuration, and the requirements for driving comfort are also getting higher and higher. Among them, the performance of our hydraulic suspension in the process of vehicle driving is particularly important for NVH. For elastomers, the main performance is provided by rubber, the static stiffness and dynamic stiffness of rubber; but for hydraulic suspension, not only rubber will provide stiffness, but also the hydraulic system will provide stiffness. When we pass speed bumps and bumpy roads, the vehicle is subjected to a large impact load. At this time, the liquid passes through the decoupling membrane in the flow channel system, and the damping generated by the flow from the upper liquid cavity to the lower liquid cavity effectively relieves and dilutes the bump load, reducing the discomfort of people in the car.

[0003] Due to the existence of the hydraulic system, the dynamic stiffness of the suspension will be higher, making it impossible to reach a balance point between damping and dynamic stiffness.

[0004] To this end, we propose a hydraulic flow channel system with a low dynamic-static ratio. Utility Model Content

[0005] In response to the shortcomings of the above-mentioned existing production technology, the applicant provides a hydraulic flow channel system with a low dynamic-to-static ratio. When the vehicle is idling normally, the liquid in the main spring flows into the flow channel through the flow channel inlet on the flow channel cover to relieve the pressure of the flow channel system, thereby reducing the dynamic stiffness value; when the vehicle is subjected to a large impact load, the liquid can pass through the decoupling membrane to generate greater damping, thereby alleviating the bumpy load.

[0006] The technical solution adopted by the utility model is as follows:

[0007] A hydraulic flow channel system with a low dynamic-static ratio, connected to a main spring of a hydraulic suspension, comprises:

[0008] A flow channel base, comprising a first grid, wherein the flow channel base is provided with a flow channel outside the first grid;

[0009] a decoupling membrane, arranged on top of the first grid;

[0010] A flow channel cover plate is arranged above the decoupling membrane, and a second grid and a flow channel inlet are arranged on the flow channel cover plate, and the flow channel inlet is located above the flow channel;

[0011] Among them, when the vehicle is idling normally, the liquid in the main spring flows into the flow channel through the flow channel inlet on the flow channel cover to relieve the pressure of the flow channel system, which is used to reduce the dynamic stiffness value; when the vehicle is subjected to a large impact load, the liquid can pass through the decoupling membrane to generate greater damping, which is used to alleviate the bumpy load.

[0012] It is further characterized by:

[0013] A liquid filling port is arranged on one side of the flow channel base for injecting liquid.

[0014] The liquid filling port is sealed by a steel ball after the liquid is injected.

[0015] A sealing rib is arranged at the top of the first grid, and a large positioning column and a small positioning column are arranged at intervals outside the sealing rib at the top of the first grid.

[0016] The flow channel cover plate is provided with a large positioning hole corresponding to the large positioning column, and the flow channel cover plate is also provided with a small positioning hole corresponding to the small positioning column.

[0017] A sealing groove corresponding to the sealing rib is arranged at the bottom of the flow channel cover plate.

[0018] The flow channel base is a plastic part, the decoupling membrane is a vulcanized rubber part, and the flow channel cover is a sheet metal part.

[0019] The first grid and the second grid are non-uniform grids.

[0020] The decoupling membrane comprises a decoupling membrane and ribs. The upper and lower surfaces of the decoupling membrane are both provided with ribs, and the ribs are semi-cylindrical.

[0021] The beneficial effects of the utility model are as follows:

[0022] The utility model has a compact and reasonable structure and is easy to operate. When the vehicle is running and idling normally, the liquid moves downward from the main spring, and the liquid flows into the flow channel through the flow channel inlet on the flow channel cover plate, so that the flow channel system is depressurized, the dynamic stiffness value is reduced, and then a balance point is reached between the damping and the dynamic stiffness; when receiving an impact load, the liquid will move downward rapidly, a part of the liquid will flow into the flow channel through the flow channel inlet, and another part of the liquid will not have time to flow in from the flow inlet, but will impact the decoupling membrane from the second grid, and pass through the gap of the decoupling membrane, thereby generating greater damping and reducing the unevenness caused by passing over bumpy sections.

[0023] At the same time, the utility model also has the following advantages:

[0024] (1) After the flow channel system is connected to the main spring, vacuum is drawn through the liquid filling port. After the vacuum is drawn, liquid is injected into the flow channel through the liquid filling port. After the liquid is injected, the liquid filling port is sealed by a steel ball. Under the action of negative pressure, the liquid enters the main spring through the flow channel inlet.

[0025] (2) The end surface of the first grid is provided with a sealing rib, and the bottom of the flow channel cover plate is provided with a sealing groove corresponding to the sealing rib, and the sealing groove cooperates with the sealing rib to perform sealing.

[0026] (3) The end surface of the first grid is provided with a large positioning column and a small positioning column at intervals outside the sealing rib, and a large positioning hole corresponding to the large positioning column is provided on the flow channel cover plate, and a small positioning hole corresponding to the small positioning column is also provided on the flow channel cover plate. The large positioning column cooperates with the large positioning hole, and the small positioning column cooperates with the small positioning hole to achieve positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the utility model.

[0028] Figure 2 It is a schematic diagram of the flow channel cover plate of the utility model.

[0029] Figure 3 It is a schematic diagram of the decoupling membrane of the utility model.

[0030] Figure 4 It is a schematic diagram of the flow channel base of the utility model.

[0031] Among them: 1. flow channel base; 101. flow channel; 102. filling port; 103. first grid; 104. sealing rib; 105. large positioning column; 106. small positioning column; 2. decoupling membrane; 201. decoupling membrane; 202. rib; 3. flow channel cover; 301. second grid; 302. flow channel inlet; 303. large positioning hole; 304. small positioning hole; 305. sealing groove. DETAILED DESCRIPTION

[0032] The specific implementation of the present utility model is described below in conjunction with the accompanying drawings.

[0033] As shown in the picture - Figure 4 As shown, a hydraulic channel system with a low dynamic-static ratio includes a channel base 1, a decoupling membrane 2 and a channel cover plate 3.

[0034] The flow channel base 1 is a plastic part. A first grid 103 is arranged in the middle of the flow channel base 1. The first grid 103 is an uneven grid. A sealing rib 104 is arranged on the end face of the first grid 103. A large positioning column 105 and a small positioning column 106 are arranged on the end face of the first grid 103 outside the sealing rib 104. The flow channel 101 is arranged on the outer circle of the first grid 103 of the flow channel base 1. A liquid filling port 102 is arranged on the side of the flow channel base 1. Liquid is injected through the liquid filling port 102. The liquid filling port 102 is sealed by a steel ball. The flow channel base 1 is divided into three major functional areas, among which the first grid 103 is the first functional area, which is the beating area of ​​the decoupling membrane 2; the flow channel 101 is the second functional area, which is used for liquid flow; and the liquid filling port 102 is the third functional area, which is used for injecting liquid. The liquid filling port 102 is connected with the flow channel 101.

[0035] The decoupling membrane 2 is a vulcanized rubber part. The decoupling membrane 2 is in sheet shape with a thickness of about 3 mm. The decoupling membrane 2 includes a decoupling membrane 201 and ribs 202. The ribs 202 are semi-cylindrical. The ribs 202 are arranged on the upper and lower surfaces of the decoupling membrane 201, and four ribs 202 are arranged on each of the upper and lower surfaces of the decoupling membrane 201.

[0036] The flow channel cover plate 3 is a sheet metal part, and a second grid 301 is arranged on the flow channel cover plate 3. The second grid 301 is in an oblong shape and has different sizes. The flow channel cover plate 3 is also provided with a flow channel inlet 302, which is U-shaped. The flow channel cover plate 3 is provided with a large positioning hole 303 corresponding to the large positioning column 105, and the flow channel cover plate 3 is also provided with a small positioning hole 304 corresponding to the small positioning column 106. The flow channel cover plate 3 is provided with a sealing groove 305 corresponding to the sealing rib 104 at the bottom. The flow channel inlet 302 is located above the flow channel 101.

[0037] The decoupling membrane 2 is arranged on the top of the flow channel base 1, and the flow channel cover plate 3 is arranged on the flow channel base 1 and is located above the decoupling membrane 2. After the flow channel system is connected to the main spring, vacuum is drawn through the liquid filling port 102. After vacuum is drawn, liquid is injected into the flow channel 101 through the liquid filling port 102. After the liquid is injected, the liquid filling port 102 is sealed by a steel ball. The liquid enters the main spring through the flow channel inlet under the action of negative pressure.

[0038] When the vehicle is driving and idling normally, the liquid moves downward from the main spring, and flows into the flow channel 101 through the flow channel inlet 302 on the flow channel cover plate 3, so that the flow channel system is depressurized and the dynamic stiffness value is reduced, thereby reaching a balance point between the damping and the dynamic stiffness; when receiving an impact load, the liquid will move downward rapidly, and a part of the liquid will flow into the flow channel 101 through the flow channel inlet 302, and another part of the liquid will not have time to flow in from the flow inlet 302, but will impact the decoupling membrane 2 from the second grid 301, and pass through the gap of the decoupling membrane 2, thereby generating greater damping and reducing the roughness caused by passing over bumpy roads.

[0039] The above description is an explanation of the utility model, not a limitation of the utility model. The scope of the utility model is defined by the claims. Any form of modification can be made within the protection scope of the utility model.

Claims

1. A hydraulic flow channel system with a low dynamic-static ratio, connected to the main spring of a hydraulic mount, characterized in that: include: A flow channel base (1), comprising a first grid (103), wherein the flow channel base (1) is provided with a flow channel (101) outside the first grid (103); A decoupling membrane (2) is arranged on top of the first grid (103); A flow channel cover plate (3) is arranged above the decoupling membrane (2), and a second grid (301) and a flow channel inlet (302) are arranged on the flow channel cover plate (3), and the flow channel inlet (302) is located above the flow channel (101); When the vehicle is idling normally, the liquid in the main spring flows into the flow channel (101) through the flow channel inlet (302) on the flow channel cover plate (3) to relieve the pressure of the flow channel system, thereby reducing the dynamic stiffness value; when the vehicle is subjected to a large impact load, the liquid can pass through the decoupling membrane (2) to generate a large damping, thereby alleviating the bump load.

2. A hydraulic flow channel system with a low dynamic-static ratio as claimed in claim 1, characterized in that: A liquid filling port (102) is provided on one side of the flow channel base (1) for injecting liquid.

3. A hydraulic flow channel system with a low dynamic-static ratio as claimed in claim 2, characterized in that: The liquid filling port (102) is sealed by a steel ball after liquid is injected.

4. A hydraulic flow channel system with a low dynamic-static ratio as claimed in claim 1, characterized in that: A sealing rib (104) is arranged at the top of the first grid (103), and a large positioning column (105) and a small positioning column (106) are arranged at intervals outside the sealing rib (104) at the top of the first grid (103).

5. A hydraulic flow channel system with a low dynamic-static ratio as claimed in claim 4, characterized in that: The flow channel cover plate (3) is provided with a large positioning hole (303) corresponding to the large positioning column (105), and the flow channel cover plate (3) is also provided with a small positioning hole (304) corresponding to the small positioning column (106).

6. A hydraulic flow channel system with a low dynamic-static ratio as claimed in claim 5, characterized in that: The bottom of the flow channel cover plate (3) is provided with a sealing groove (305) corresponding to the sealing rib (104).

7. A hydraulic channel system with a low dynamic-static ratio as claimed in claim 1, characterized in that: The flow channel base (1) is a plastic part, the decoupling membrane (2) is a vulcanized rubber part, and the flow channel cover plate (3) is a sheet metal part.

8. A hydraulic channel system with a low dynamic-static ratio as claimed in claim 1, characterized in that: The first grid (103) and the second grid (301) are non-uniform grids.

9. A hydraulic channel system with a low dynamic-static ratio as claimed in claim 1, characterized in that: The decoupling membrane (2) comprises a decoupling membrane (201) and ribs (202); the ribs (202) are arranged on both the upper and lower surfaces of the decoupling membrane (201); and the ribs (202) are semi-cylindrical.

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