An oil injection valve seat of a full active suspension and a full active suspension system

Abstract

The utility model discloses an oil injection valve seat of full active suspension and full active suspension system, including valve seat, be equipped with inside oil channel on the valve seat, and inside oil channel one end is connected with the oil pipe of shock absorber, and the other end is connected with the oil port of electro -hydraulic pump, is equipped with switch valve on the valve seat, and the valve core of switch valve can extend into or extend inside oil channel and make inside oil channel close or lead through. In the utility model, by increasing switch valve on the oil circuit of shock absorber and electro -hydraulic pump, when replacing electro -hydraulic pump, can separate shock absorber and electro -hydraulic pump, prevent oil pipe and shock absorber in oil leakage, initial pressure loss, can directly dismantle electro -hydraulic pump, save the step of pressure relief to whole hydraulic system, save oil, increase the safety of dismounting operation.

Description

Technical Field

[0001] This utility model relates to the field of fully active suspension technology, and more specifically to an oil injection valve seat and a fully active suspension system. Background Technology

[0002] Currently, there are two main locations for the oil injection port of active suspension: one is to place the oil injection valve on the hydraulic line, and the other is to place the oil injection valve on the shock absorber; moreover, the quick connector inserted into the electro-hydraulic pump port only serves to connect the electro-hydraulic pump and the oil line. However, pipelines and shock absorbers are often installed in narrow spaces on the chassis and suspension. The two arrangement methods of the above-mentioned oil injection valve require the removal of the obstruction of other parts of the vehicle in order to connect the oil injection machine to the oil injection valve, which is inconvenient for the oil injection operation of the whole vehicle. Furthermore, integrating the oil injection port at the end of the shock absorber will increase the design difficulty and space occupation of the shock absorber. Furthermore, the existing quick-connect couplings lack a locking function. Before disassembling the electro-hydraulic pump separately, due to the high pressure in the system, there may be oil spraying at the quick-connect couplings during the disassembly process, which poses a certain danger. Moreover, after disassembly, the oil in the oil pipes and shock absorbers will leak from the couplings, resulting in oil waste and increasing the vacuuming and oil injection time of the system after replacing the electro-hydraulic pump. Utility Model Content

[0003] The technical problem to be solved by this utility model is how to improve the safety of disassembling electro-hydraulic pumps.

[0004] This utility model solves the above-mentioned technical problems through the following technical means: an oil injection valve seat for a fully active suspension, including a valve seat, an internal oil passage is provided on the valve seat, one end of the internal oil passage is connected to the oil pipe of the shock absorber, and the other end is connected to the oil port of the electro-hydraulic pump, and a switch valve is provided on the valve seat, the valve core of the switch valve can extend into or out of the internal oil passage and cause the internal oil passage to be closed or open.

[0005] As a preferred technical solution, the switching valve includes a valve body and a plug rod. The valve body is fixedly connected to the valve seat. An axial oil passage is provided on the valve body. The plug rod can move toward the valve seat in the axial oil passage, and the end of the plug rod can extend into the internal oil passage.

[0006] As a preferred technical solution, the plug rod is threaded with the axial oil passage, and a hexagonal hole is provided at the end of the plug rod.

[0007] As a preferred technical solution, a limiting snap ring is provided at the port of the axial oil passage away from the valve seat.

[0008] As a preferred technical solution, an oil injection valve is fixedly connected to the valve seat, and an oil delivery channel and a radial channel are provided on the plug rod. The oil injection valve is connected to the internal oil passage through the oil delivery channel and the radial channel. A through hole is provided circumferentially on the plug rod, and the through hole can communicate with the oil injection hole of the oil injection valve.

[0009] As a preferred technical solution, the valve seat is fixedly connected to an assembly interface, a first interface, and a second interface, with one end of the internal oil passage fixedly connected to the assembly interface and the other end fixedly connected to the first interface.

[0010] As a preferred technical solution, the assembly interface is provided with at least one O-ring and a retaining ring along its axial direction.

[0011] As a preferred technical solution, the valve seat and valve body are an integral structure, and the oil injection valve is fixed in the Z direction of the valve body.

[0012] This utility model also provides a fully active suspension system, including an oil injection valve seat, a shock absorber, and an electro-hydraulic pump. One end of the internal oil passage is fixedly connected to the shock absorber through a connecting pipe, and the other end is fixedly connected to the oil port of the electro-hydraulic pump.

[0013] As a preferred technical solution, an oil injection valve is fixedly connected to the valve seat. The oil injection valve can communicate with the internal oil passage. The switching valve has the following modes: The switching valve is configured in the closed mode: the internal oil passage is cut off, and the shock absorber is not connected to the electro-hydraulic pump; The switching valve is configured in the open mode: the internal oil passage is open, and the shock absorber is connected to the electro-hydraulic pump and the oil injection valve through the internal oil passage.

[0014] The beneficial effects of this utility model are as follows: (1) In this utility model, by adding a switching valve to the oil circuit of the shock absorber and the electro-hydraulic pump, the shock absorber and the electro-hydraulic pump can be isolated when the electro-hydraulic pump is replaced, preventing oil leakage and initial pressure loss in the oil pipe and the shock absorber. The electro-hydraulic pump can be directly disassembled, saving the step of depressurizing the entire hydraulic system, saving oil, and increasing the safety of disassembly operation.

[0015] (2) In this utility model, by setting the orientation of the oil injection valve to the Z direction, it is possible to lift the whole vehicle without increasing the maximum envelope of the electro-hydraulic pump or disassembling other parts, and then vacuum the fully active system by connecting the oil injection valve, thereby increasing the convenience of the oil injection operation.

[0016] (3) In this utility model, after the electro-hydraulic pump is installed, the switch valve is configured to be in the open state, that is, the internal oil passage connecting the electro-hydraulic pump and the shock absorber is open. Since there is no loss of oil in the pipeline and the shock absorber, it is only necessary to vacuum and inject oil into the electro-hydraulic pump in the system, thereby improving the oil injection efficiency of the replaced system. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure provided in Embodiment 1 of the present utility model; Figure 2 An exploded view provided for Embodiment 1 of this utility model; Figure 3 This is a schematic diagram of the assembly interface structure provided in Embodiment 1 of this utility model; Figure 4 This is a schematic cross-sectional view of the valve in the closed state provided in Embodiment 1 of this utility model; Figure 5 This is a schematic diagram of the cross-sectional structure of the switch valve in the open state provided in Embodiment 1 of this utility model; Reference numerals: 1. Valve seat; 2. Assembly interface; 21. O-ring one; 22. Retaining ring; 23. O-ring two; 3. First interface; 31. Connecting pipe; 4. Second interface; 41. Oil injection valve; 5. Switch valve; 51. Plug rod; 52. Sealing ring; 53. Through hole; 54. Limiting snap ring. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] Example 1 See Figure 1 An oil injection valve seat for a fully active suspension includes a valve seat 1 and a switching valve 5. The valve seat 1 has an internal oil passage. One end of the internal oil passage is connected to the oil pipe of the shock absorber, and the other end is connected to the oil port of the electro-hydraulic pump. The valve seat 1 is provided with a switching valve 5. The valve core of the switching valve 5 can extend into and out of the internal oil passage and cause the internal oil passage to be closed or open. See Figure 2 The switching valve 5 includes a valve body, a plug rod 51, and a sealing ring 52. The valve body is fixedly connected to the valve seat 1, or it can be an integral structure. An axial oil passage is provided on the valve body. The plug rod 51 can move toward the valve seat 1 in the axial oil passage, and the end of the plug rod 51 can extend into the internal oil passage. The plug rod 51 forms the valve core. The sealing ring 52 is fixed circumferentially on the plug rod 51 and is sealed and fixed to the axial oil passage through the sealing ring 52. It should be noted that the setting of the sealing ring 52 does not affect the movement of the plug rod 51 in the axial oil passage, such as by adjusting the interference fit between the sealing ring 52 and the axial oil passage. The end dimension of the plug rod 51 is larger than the cross-sectional dimension of the internal oil passage to ensure that the plug rod 51 can cut off the internal oil passage and ensure the sealing effect of the internal oil passage. In this embodiment, the cross-section of the internal oil passage is circular, but it can also be rectangular, elliptical or other shapes, and is not limited to these. The end of the plug rod 51 is set in a circumferentially tapering frustum shape. In this embodiment, the plug rod 51 is threaded into the axial oil passage. A limiting snap ring 54 is provided at the port of the axial oil passage away from the valve seat 1. The limiting snap ring 54 prevents the plug rod 51 from falling out of the axial oil passage under the pressure of the oil passage. It should be noted that the limiting snap ring 54 in this embodiment is a sheet-shaped limiting snap ring 54, but it can also be a cylindrical limiting snap ring 54. The valve body is also provided with a snap ring groove that matches the limiting snap ring 54. In order to realize the rotation of the plug rod 51, the end of the plug rod 51 is provided with a hexagonal hole, and the plug rod 51 can be rotated by a hexagonal wrench.

[0020] To shorten the vacuuming and fluid injection time after replacing the electro-hydraulic pump, an oil injection valve 41 is also connected to the valve seat 1. The oil injection valve 41 can communicate with the internal oil passage. The plug rod 51 is provided with an oil delivery channel and a radial channel. In this embodiment, the oil delivery channel is located at the center of the plug rod 51, but it can also be located outside the center of the plug rod 51. The plug rod 51 is provided with multiple through holes 53 in its circumference. The multiple through holes 53 form a radial channel. The through hole 53 facing the oil injection port of the oil injection valve 41 communicates with the oil injection port. After replacing the electro-hydraulic pump, the fully active suspension system is vacuumed and oiled through the oil injection valve 41. Compared with the original method of replacing the electro-hydraulic pump, which requires vacuuming and oiling the entire oil circuit of the fully active system, the oil injection time is shortened and the convenience of the oil injection operation is improved.

[0021] See Figure 2 , Figure 3 In this embodiment, the axial direction of the internal oil passage is taken as the X-direction, the axial direction of the axial oil passage is taken as the Y-direction, and the height direction of the valve seat 1 is taken as the Z-direction. The electro-hydraulic pump is generally arranged in the middle and lower part of the vehicle chassis. The Z-direction space is relatively abundant and generally has no other parts to block it. At the same time, the oil injection valve 41 is also oriented in the Z-direction. This allows the oil injection valve 41 to be turned on to perform vacuum oil injection on the fully active suspension system after the vehicle is lifted without increasing the maximum envelope of the electro-hydraulic pump or disassembling other parts. This increases the convenience of the oil injection operation. In this embodiment, the oil injection valve 41 is fixed in the Z-direction of the valve body. The installation direction of the oil injection valve 41 can also be adjusted according to the layout space of the vehicle.

[0022] The valve seat 1 is fixedly connected to an assembly interface 2 and a first interface 3 in the X direction. The assembly interface 2 is connected to the electro-hydraulic pump, and the first interface 3 is connected to the shock absorber. The assembly interface 2 is provided with an O-ring 21, a retaining ring 22, and an O-ring 23 in sequence along its axial direction. It is fixed to the oil port of the electro-hydraulic pump through the retaining ring 22. The O-ring 21 and O-ring 23 achieve a double-layer seal at the connection. Of course, one or three sealing rings can also be provided. The first interface 3 is fixedly connected to a connecting pipe 31. One end of the connecting pipe 31 is connected to the first interface 3, and the other end is connected to the oil circuit of the shock absorber. The valve seat 1 is provided with a second interface 4 in the Z direction. The second interface 4 is fixedly connected to the oil injection valve 41.

[0023] How to use: See Figure 4 , Figure 5 Before disassembling the electro-hydraulic pump, set the switch valve 5 to the closed state, which cuts off the internal oil passage connecting the electro-hydraulic pump and the shock absorber, preventing oil leakage and loss of initial pressure in the shock absorber. At this time, the electro-hydraulic pump can be disassembled directly, saving the step of depressurizing the entire hydraulic system, saving oil, and increasing the safety of the disassembly operation. After installing the electro-hydraulic pump, the switch valve 5 is configured to be in the open state, that is, the internal oil passage connecting the electro-hydraulic pump and the shock absorber is open. Since there is no loss of oil in the pipeline and the shock absorber, it is only necessary to vacuum and inject oil into the electro-hydraulic pump in the system, thereby improving the oil injection efficiency of the replaced system.

[0024] Example 2 The difference between this embodiment and embodiment 1 is that this embodiment provides a fully active suspension system including an oil injection valve seat of a fully active suspension. The fully active suspension system also includes a shock absorber and an electro-hydraulic pump. The assembly interface 2 of the shock absorber and valve seat 1 is fixed, and the shock absorber and valve seat 1 are fixedly connected.

[0025] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A fully active suspension oil injection valve seat, characterized in that, It includes a valve seat with an internal oil passage. One end of the internal oil passage is connected to the oil pipe of the shock absorber, and the other end is connected to the oil port of the electro-hydraulic pump. The valve seat is equipped with a switch valve, and the valve core of the switch valve can extend into or out of the internal oil passage, causing the internal oil passage to be closed or open.

2. The oil injection valve seat of a fully active suspension according to claim 1, characterized in that, The switching valve includes a valve body and a plug rod. The valve body is fixedly connected to the valve seat. An axial oil passage is provided on the valve body. The plug rod can move toward the valve seat in the axial oil passage, and the end of the plug rod can extend into the internal oil passage.

3. The oil injection valve seat of a fully active suspension according to claim 2, characterized in that, The plug rod is threaded into the axial oil passage, and a hexagonal hole is provided at the end of the plug rod.

4. The oil injection valve seat of a fully active suspension according to claim 2, characterized in that, The port of the axial oil passage away from the valve seat is equipped with a limit snap ring.

5. The oil injection valve seat of a fully active suspension according to claim 2, characterized in that, An oil injection valve is fixedly connected to the valve seat. An oil delivery channel and a radial channel are provided on the plug rod. The oil injection valve is connected to the internal oil passage through the oil delivery channel and the radial channel. A through hole is provided circumferentially on the plug rod, which can communicate with the oil injection hole of the oil injection valve.

6. The oil injection valve seat of a fully active suspension according to claim 1, characterized in that, The valve seat is fixedly connected to an assembly interface, a first interface, and a second interface. One end of the internal oil passage is fixedly connected to the assembly interface, and the other end is fixedly connected to the first interface.

7. The oil injection valve seat of a fully active suspension according to claim 6, characterized in that, The assembly interface is provided with at least one O-ring and a retaining ring along its axial direction.

8. The oil injection valve seat of a fully active suspension according to claim 2, characterized in that, The valve seat and valve body are an integral structure, and the oil injection valve is fixed in the Z direction of the valve body.

9. A fully active suspension system, characterized in that, It includes the oil injection valve seat, shock absorber, and electro-hydraulic pump of the fully active suspension as described in any one of claims 1-8, wherein one end of the internal oil passage is fixedly connected to the shock absorber via a connecting pipe, and the other end is fixedly connected to the oil port of the electro-hydraulic pump.

10. A fully active suspension system according to claim 9, characterized in that, An oil injection valve is fixedly connected to the valve seat. The oil injection valve can communicate with the internal oil passage. The switching valve has the following modes: Closed mode: Internal oil passages are cut off, and the shock absorber is not connected to the electro-hydraulic pump; Opening mode: The internal oil passage is open, and the shock absorber is connected to the electro-hydraulic pump and oil injection valve through the internal oil passage.

Images