Interconnected molecular spring vehicle suspension

Abstract

This invention discloses an interconnected molecular spring vehicle suspension, comprising an interconnected structure of several hydraulic chamber units and an oil reservoir unit. Each hydraulic chamber unit includes a hydraulic chamber, a piston rod, a damping module, and an oil supply pipe. The oil reservoir unit includes a molecular spring chamber, insulating rubber, and an oil tank. The piston rod is connected to the vehicle frame, and the oil tank is isolated from the molecular spring chamber by the insulating rubber. The molecular spring chamber is filled with water and a hydrophobic microporous material. When the piston rod is compressed downwards, the hydraulic oil in the hydraulic chamber flows into the oil tank through its damping module and the oil supply pipe. When the piston rod is extended, the hydraulic oil flows back into the hydraulic chamber under the elastic force of the molecular spring chamber. The molecular spring chamber provides vibration isolation, and the damping force generated when the hydraulic oil flows back and forth through the damping module dissipates vibration energy. The interconnected design simplifies the structure of the molecular spring suspension, enabling lightweight suspension and reducing suspension costs.

Description

Technical Field

[0001] This invention relates to a molecular spring suspension structure that enables interconnection, centralization, and lightweighting of suspension components, belonging to the field of automotive suspension design technology. Background Technology

[0002] Semi-trailer trucks have seen increasing adoption in the transportation industry in recent years due to their large load capacity and high transport efficiency. However, their long length and high center of gravity make them prone to lateral instability, potentially leading to rollover accidents. Therefore, research on vehicle roll control is crucial to prevent rollovers, with improving suspension performance being the most direct and effective way to enhance roll stability. Currently, most semi-trailer trucks use leaf spring suspensions to absorb vibrations and shocks, which are generally ineffective and result in significant weight. While air spring suspensions reduce weight, their stiffness improvement is limited, and neither can simultaneously meet the demands for comfort and handling stability. In recent years, the emerging hydraulic interconnected suspension has received widespread attention in the field of single-vehicle applications. It offers vibration damping performance comparable to air suspension, while the interconnected suspension system exhibits non-linearly varying roll angle stiffness characteristics, effectively improving vehicle handling stability and safety—advantages unmatched by traditional leaf springs and air suspensions. Therefore, interconnected molecular spring suspensions can further enhance the comfort and handling stability of traditional molecular spring suspensions. In addition, interconnected molecular spring frames can further reduce the mass of traditional molecular spring suspensions, which is in line with the current trend of lightweight automotive design. Summary of the Invention

[0003] The purpose of this invention is to provide an interconnected molecular spring vehicle suspension that improves the vibration isolation performance of traditional molecular spring suspension, promotes the integrated and lightweight design of traditional molecular spring suspension, and increases the driving range of electric vehicles.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An interconnected molecular spring vehicle suspension comprises an interconnected structure consisting of several hydraulic chamber units and an oil storage unit. Each hydraulic chamber unit includes a hydraulic chamber, a piston rod, a damping module, and an oil supply pipe. The oil storage unit includes a molecular spring chamber, an insulating rubber layer, and an oil reservoir. The upper end of the piston rod is connected to the vehicle body or frame, and the lower end extends into the hydraulic chamber. The oil reservoir is connected to the molecular spring chamber, and the two are separated by the insulating rubber layer. The molecular spring chamber is filled with water and a hydrophobic microporous material. When the piston rod is compressed downwards, the hydraulic oil in its corresponding hydraulic chamber flows into the oil reservoir through its damping module and oil supply pipe. When the piston rod is extended, the hydraulic oil flows back into the hydraulic chamber under the elastic force of the molecular spring chamber. When subjected to external pressure, the molecular spring chamber generates elastic force, thereby achieving vibration isolation. The damping force generated when the hydraulic oil flows back and forth through the damping module is used to dissipate vibration energy.

[0006] Furthermore, pressure plates are installed on both sides of the damping module. The two pressure plates are pressed and installed in the bottom countersunk hole of the hydraulic oil chamber by the damping module cover. The damping module cover is connected to the oil storage tank through the oil supply pipe.

[0007] Furthermore, a hydraulic oil chamber cover is fixedly connected to the top of the hydraulic oil chamber, and a first sealing groove is also provided on the top of the hydraulic oil chamber. A first sealing ring is placed in the first sealing groove to achieve a seal between the hydraulic oil chamber and the hydraulic oil chamber cover. The inside of the hydraulic oil chamber is used to store hydraulic oil. The bottom of the hydraulic oil chamber is provided with mounting countersunk holes for the damping module and the pressure plate. The bottom of the hydraulic oil chamber is fixedly connected to the damping module cover.

[0008] Furthermore, the hydraulic oil chamber cover is fixedly connected to the top of the hydraulic oil chamber, and a second sealing groove is provided on the side of the central through hole of the hydraulic oil chamber cover to accommodate a second sealing ring. The second sealing ring is used for sealing between the piston rod and the hydraulic oil chamber cover.

[0009] Furthermore, the damping module is installed in the countersunk hole at the bottom of the hydraulic oil chamber, and the hydraulic oil chamber is sealed by a third sealing ring installed on the side of the damping module. There is a pressure plate on both the left and right sides of the damping module for adjusting the damping force, and the bolts passing through the central through hole of the three modules connect the damping module and the pressure plate.

[0010] Furthermore, the damping module includes a first central through hole and a normally closed damping hole located around the first central through hole, and the two pressure plates are used to control the opening size of the normally closed damping hole on the damping module.

[0011] Furthermore, the damping module cover is cylindrical and has an edge through hole and a second center through hole. The edge through hole is fixed to the hydraulic oil cavity by bolts, and the second center through hole is connected to the first center through hole of the damping module. One end face of the damping module cover is provided with a countersunk hole for accommodating the damping module, and the other end face is provided with a boss for connecting to the oil pipeline.

[0012] Furthermore, the oil supply pipe is used to realize the reciprocating flow of hydraulic oil between the hydraulic oil chamber and the oil storage tank. One end of the pipe is connected to the damping module cover, and the other end is connected to the oil storage tank.

[0013] Furthermore, the edge of the molecular spring cavity is provided with a through hole, and bolts passing through the edge through hole of the molecular spring cavity, the edge through hole of the isolation rubber, and the edge through hole of the oil storage tank in sequence are used to fasten the three together.

[0014] Furthermore, the oil storage tank has a protruding oil inlet on its side for connection with an oil pipeline, and a countersunk hole at the bottom.

[0015] The beneficial effects of this invention are as follows:

[0016] In this invention, the piston rod, hydraulic oil chamber, oil supply pipe, molecular spring, and oil reservoir chamber are used for the transmission and bearing of sprung mass. The pressure plate and damping module generate damping force. The molecular spring chamber, comprising water and hydrophobic microporous material, generates elastic force and is separated from the oil reservoir by an insulating rubber layer. The interconnected molecular spring suspension consists of several branches and a central unit (molecular spring chamber and oil reservoir). The interconnected design helps improve the vehicle's roll stiffness and further enhances the comfort and handling stability of traditional molecular spring suspensions. Furthermore, the interconnected molecular spring frame can further reduce the mass of traditional molecular spring suspensions, aligning with current automotive lightweight design trends. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a cross-sectional view of the hydraulic oil chamber of the left front branch;

[0019] Figure 3 This is a cross-sectional view of the piston rod;

[0020] Figure 4 This is a cross-sectional view of the hydraulic oil chamber cover;

[0021] Figure 5 This is a cross-sectional view of the damping module cover;

[0022] Figure 6 This is a cross-sectional view of the tablet compression.

[0023] Figure 7 Cross-sectional view of the damping module

[0024] Figure 8 This is a cross-sectional view of the molecular spring cavity;

[0025] Figure 9 This is a cross-sectional view of the insulating rubber.

[0026] Figure 10 This is a cross-sectional view of the oil storage tank;

[0027] In the diagram, 101-hydraulic oil chamber; 102-top edge countersunk hole; 103-top sealing groove; 104-bottom boss countersunk hole; 105-bottom boss center through hole; 201-piston rod; 202-piston rod top thread; 301-hydraulic oil chamber cover; 302-oil chamber cover center through hole side sealing groove; 303-oil chamber cover edge through hole; 401-damping module cover; 402-damping module cover edge through hole; 403-damping module cover edge boss; 404-damping module cover center boss; 405-damping module cover center through hole; 5-first pressure plate; 6-second pressure plate; 701-damping mold Block; 702-Damping module center through hole; 703-Normally closed damping hole; 704-Normally open damping hole; 705-Damping module end face sealing groove; 801-Left front oil supply pipe; 802-Right front oil supply pipe; 803-Right rear oil supply pipe; 804-Left rear oil supply pipe; 901-Molecular spring cavity; 902-Top countersunk hole of molecular spring cavity; 903-Edge through hole of molecular spring cavity; 1001-Isolation rubber; 1002-Edge through hole of isolation rubber; 1101-Oil storage tank; 1102-Center through hole of side boss of oil storage tank; 1103-Top threaded hole of oil storage tank; 1104-Bottom countersunk hole of oil storage tank. Detailed Implementation

[0028] The invention will now be further explained with reference to the accompanying drawings.

[0029] like Figure 1 The diagram shows the interconnected molecular spring vehicle suspension of the present invention, comprising a hydraulic oil chamber, a piston rod, a hydraulic oil chamber cover, a damping module cover, a pressure plate, a damping module, an oil supply pipe, a molecular spring chamber, a separating rubber layer, and an oil reservoir. The piston rod connects to the vehicle body (or frame); the piston rod, hydraulic oil chamber, oil supply pipe, molecular spring chamber, and oil reservoir are used for the transfer and bearing of sprung mass; the pressure plate and damping module generate damping force; the molecular spring chamber includes water and hydrophobic microporous material to generate elastic force, and is separated from the oil reservoir by the separating rubber layer. In this embodiment, the interconnected molecular spring suspension consists of four branches (left front, right front, left rear, right rear) and a central unit (molecular spring chamber and oil reservoir). The interconnected design helps improve the vehicle's roll stiffness and further enhances the comfort and handling stability of traditional molecular spring suspensions. Furthermore, the interconnected molecular spring frame can further reduce the mass of traditional molecular spring suspensions, conforming to current automotive lightweight design trends.

[0030] like Figure 2As shown, the top edge of the hydraulic oil chamber 101 is provided with circumferentially distributed countersunk holes 102 for connection with the hydraulic oil chamber cover 301. A top sealing groove 103 is provided inside the countersunk holes 102. The bottom boss edge of the hydraulic oil chamber 101 is provided with a bottom boss countersunk hole 104. The bottom boss countersunk hole 104 is fastened to the damping module cover edge through hole 402 of the damping module cover 401 by bolts. A bottom boss center through hole 105 is provided at the center of the bottom boss of the hydraulic oil chamber 101, providing installation space for the damping module 701 and the damping module cover edge boss 403, facilitating the transfer of oil between the hydraulic oil chamber 101 and the oil storage tank 1101. The bottom boss of the hydraulic oil chamber 101 is fastened to the oil delivery pipe 8. Figure 3 As shown, the piston rod 201 passes through the central through hole of the hydraulic oil chamber cover 301 from the left end and extends into the hydraulic oil chamber. The piston rod 201 seals the hydraulic oil chamber 101 through the sealing ring in the sealing groove 302 on the side of the central through hole of the hydraulic oil chamber cover 301. The piston rod 201 is provided with a piston rod top thread 202 for connection with the outside.

[0031] like Figure 4 As shown, the hydraulic oil chamber cover 301 has an edge through hole 303 for connecting with the top edge countersunk hole 102 of the top of the hydraulic oil chamber. The center through hole of the hydraulic oil chamber cover 301 is for inserting the piston rod 201. The sealing groove 302 on the side of the center through hole of the oil chamber cover has a built-in sealing ring for sealing the piston rod 201.

[0032] like Figure 5 As shown, the damping module cover 401 has a damping module cover edge through hole 402 on its circumferential edge. The damping module cover edge through hole 402 and the bottom boss countersunk hole 104 of the hydraulic oil chamber 101 are fastened together by bolts. The damping module cover 401 has a damping module cover edge boss 403 on its left circumferential edge, which is used to compress the damping module 701. The damping module cover 401 has a damping module cover center boss 404 on its right center, and the outer circumference of the damping module cover center boss 404 is threaded for connection with the oil supply pipe. The damping module cover 401 has a damping module cover center through hole 405 in its center, which is used for the transfer of hydraulic oil between the hydraulic oil chamber 101 and the oil storage tank 1101. Figure 6-7 As shown, the damping module 701 is provided with a central through hole 702, a normally closed damping hole 703 and a normally open damping hole 704, and a sealing groove 705 on the end face of the damping module. The first pressure plate 5 and the second pressure plate 6 are used to control the opening size of the normally closed damping hole 703 on the damping module 701.

[0033] There are four oil supply pipes: the left front oil supply pipe 801, the right front oil supply pipe 802, the right rear oil supply pipe 803, and the left rear oil supply pipe 804, which are used to connect the hydraulic oil chamber 101 to the oil storage tank 1101.

[0034] like Figure 8 As shown, the molecular spring cavity 901 is an open square shell filled with molecular spring material. A countersunk hole 902 is provided at the top center of the molecular spring cavity 901, and circumferentially distributed edge through holes 903 are provided at the bottom edge of the molecular spring cavity 901. The edge through holes 903 are fastened to the molecular spring cavity by bolts, isolation rubber 1001 and oil tank 1101.

[0035] like Figure 9 As shown, the edge of the isolation rubber 1001 is provided with circumferentially distributed isolation rubber edge through holes 1002, and the isolation rubber 1001 is used to isolate the molecular spring cavity 901 from the oil storage tank 1101.

[0036] like Figure 10 As shown, the oil storage tank 1101 is an open square shell filled with hydraulic oil. The four sides of the oil storage tank 1101 are provided with central through holes 1102 for connecting to the oil pipeline. The top of the oil storage tank 1101 is provided with a threaded hole 1103, and the bottom center of the oil storage tank 1101 is provided with a countersunk hole 1104.

[0037] In summary, this invention discloses an interconnected molecular spring vehicle suspension, comprising a hydraulic oil chamber, a piston rod, a hydraulic oil chamber cover, a damping module cover, a pressure plate, a damping module, an oil supply pipe, a molecular spring chamber, an insulating rubber, and an oil reservoir. The piston rod connects to the vehicle body (or frame); the piston rod, hydraulic oil chamber, oil supply pipe, molecular spring, and oil reservoir are used for the transfer and bearing of sprung mass; the pressure plate and damping module generate damping force; the molecular spring chamber includes water and hydrophobic microporous material to generate elastic force, and is separated from the oil reservoir by the insulating rubber. This invention is used in automotive suspensions; the interconnected design simplifies the structure of the molecular spring suspension, achieves lightweight suspension design, and reduces suspension costs.

[0038] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An interconnected molecular spring vehicle suspension, characterized in that: The system comprises an interconnected structure consisting of several hydraulic oil chamber units and an oil storage unit. Each hydraulic oil chamber unit includes a hydraulic oil chamber, a piston rod, a damping module, and an oil supply pipe. The oil storage unit includes a molecular spring chamber, insulating rubber, and an oil reservoir. The hydraulic oil chambers have a boss at the bottom with a countersunk hole at the edge. Each damping module has a pressure plate on both sides for adjusting damping force. The damping module includes a first central through-hole and normally closed damping holes located around the first central through-hole. The two pressure plates control the opening size of the normally closed damping holes on the damping module. Bolts passing through the central through-holes of the damping module and the two pressure plates connect the damping module and the pressure plates. The damping module and the two pressure plates are pressed and installed into the countersunk hole at the bottom of the hydraulic oil chamber by a damping module cover. The damping module cover is connected to the oil reservoir via an oil supply pipe. The circumferential edge of the damping module cover has a damping force adjustment mechanism. The damping module cover edge through hole and the bottom boss countersunk hole of the hydraulic oil chamber are fastened together; bolts passing through the edge through hole of the molecular spring chamber, the edge through hole of the isolation rubber and the edge through hole of the oil tank in sequence fasten the molecular spring chamber, the isolation rubber and the oil tank together; the upper end of the piston rod is connected to the vehicle body or frame, and the lower end of the piston rod extends into the hydraulic oil chamber. The oil tank is connected to the molecular spring chamber and the two are isolated by the isolation rubber. The molecular spring chamber is filled with water and hydrophobic microporous material; when the piston rod is compressed downward, the hydraulic oil in its corresponding hydraulic oil chamber flows into the oil tank through its damping module and oil supply pipe. When the piston rod is stretched, the hydraulic oil flows back to the hydraulic oil chamber under the action of the elastic force of the molecular spring chamber. When subjected to external pressure, the molecular spring chamber generates elastic force to achieve vibration isolation. The damping force generated when the hydraulic oil flows back and forth through the damping module is used to dissipate vibration energy.

2. The interconnected molecular spring vehicle suspension according to claim 1, characterized in that: A hydraulic oil chamber cover is fixedly connected to the top of the hydraulic oil chamber. A first sealing groove is also provided on the top of the hydraulic oil chamber. A first sealing ring is placed in the first sealing groove to achieve a seal between the hydraulic oil chamber and the hydraulic oil chamber cover. The inside of the hydraulic oil chamber is used to store hydraulic oil. The bottom of the hydraulic oil chamber is provided with mounting countersunk holes for the damping module and the pressure plate. The bottom of the hydraulic oil chamber is fixedly connected to the damping module cover.

3. The interconnected molecular spring vehicle suspension according to claim 2, characterized in that: The hydraulic oil chamber cover is fixed to the top of the hydraulic oil chamber. A second sealing groove is provided on the side of the central through hole of the hydraulic oil chamber cover to accommodate a second sealing ring. The second sealing ring is used for sealing between the piston rod and the hydraulic oil chamber cover.

4. The interconnected molecular spring vehicle suspension according to claim 1, characterized in that: The damping module achieves sealing of the hydraulic oil chamber through a third sealing ring installed on the side of the damping module.

5. The interconnected molecular spring vehicle suspension according to claim 1, characterized in that: The damping module cover is cylindrical and has an edge through hole and a second center through hole. The edge through hole is fixed to the hydraulic oil chamber by bolts. The second center through hole is connected to the first center through hole of the damping module. One end face of the damping module cover has a countersunk hole for accommodating the damping module, and the other end face has a boss for connecting to the oil pipeline.

6. The interconnected molecular spring vehicle suspension according to claim 1, characterized in that: The oil supply pipe is used to realize the reciprocating flow of hydraulic oil between the hydraulic oil chamber and the oil storage tank. One end of the pipe is connected to the damping module cover, and the other end is connected to the oil storage tank.

7. The interconnected molecular spring vehicle suspension according to claim 1, characterized in that: The oil storage tank has a protruding oil inlet on its side for connecting to an oil pipeline, and a countersunk hole at the bottom.

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