Integrated energy accumulator connecting block and shock absorber

Abstract

The utility model relates to the field of automobile shock absorbers, and discloses an integrated energy accumulator connecting block and a shock absorber. The integrated energy storage device connecting block comprises an inner cylinder which is divided into an upper cavity and a lower cavity by a middle partition plate; the outer cylinder is arranged on the inner cylinder, an outer fluid channel is arranged between the outer cylinder and the inner cylinder, an upper fluid channel is arranged at the upper cavity, a lower fluid channel is arranged at the lower cavity, and ports of the three channels are communicated end to end; wherein the number of the lower fluid channels is at least two, and the two lower fluid channels are communicated or not communicated through an annular channel arranged on the inner cylinder. By arranging the multiple fluid channels, the liquid flowing path is optimized, the problem of uneven flowing is reduced, and the stability and uniformity of liquid flowing are improved. The number of the lower fluid channels is at least two, more fluid control choices are provided, the flexibility of fluid control is enhanced, liquid flow is more accurately controlled, and therefore the response speed of the shock absorber is increased.

Description

Technical Field

[0001] This utility model relates to the field of automotive shock absorbers, specifically to an integrated energy storage connecting block and a shock absorber. Background Technology

[0002] In existing automotive shock absorber designs, the accumulator connecting block is typically installed directly into the internal structure through an opening at one end of the reservoir, with a certain gap between the reservoir and the connecting block. A fluid channel is also created in the reservoir to allow for liquid flow. However, analyzing the liquid flow path within the gap or channel, the liquid needs to contact both the reservoir and the connecting block simultaneously. This design may lead to uneven liquid flow over long-term use. Furthermore, the existing connecting block's internal structure only has one opening. This single-channel design lacks flexibility in fluid control and may adversely affect the shock absorber's response speed and overall stability. Summary of the Invention

[0003] The purpose of this invention is to provide an integrated energy storage device connecting block and a vibration damper to address the aforementioned shortcomings in the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] Integrated energy storage connector block, including:

[0006] The inner cylinder is divided into an upper cavity and a lower cavity by an intermediate partition.

[0007] An outer cylinder is disposed on the inner cylinder, an external fluid channel is provided between the outer cylinder and the inner cylinder, an upper fluid channel is provided in the upper cavity, and a lower fluid channel is provided in the lower cavity, and the three channels are connected end to end.

[0008] The lower fluid channel is at least two, and an annular channel on the inner cylinder allows the two lower fluid channels to be connected or disconnected.

[0009] In a preferred embodiment of the present invention, the inner cylinder includes an upper extension, a middle extension, and a lower extension connected in sequence, wherein the upper extension protrudes from the top of the outer cylinder and the lower extension is lower than the bottom of the outer cylinder.

[0010] As a preferred embodiment of this utility model, a protrusion higher than the top of the inner cylinder is provided around the upper extension for assembly of other components.

[0011] As a preferred embodiment of the present invention, the external fluid channel includes at least one first channel formed along the height direction of the protrusion and the outer cylinder.

[0012] As a preferred embodiment of this utility model, the external fluid channel includes: two first channels opened along the height direction of the protrusion and the outer cylinder, and arranged side by side;

[0013] A first dividing plate is provided between the two first channels. The upper and lower ends of the first dividing plate are respectively provided with an upper notch and a lower notch connecting the two channels. The middle part of the first dividing plate divides the two channels into channels for liquid to flow through.

[0014] The protrusion is provided with an arc-shaped flow channel to extend the opening size of the two first channels, and the outer cylinder is provided with a first connection port for communicating with the two first channels and the first lower notch.

[0015] As a preferred embodiment of this utility model, the first connection port is centered on the first partition plate, so that the parts of the two first channels that correspond one-to-one with the first connection port are the same.

[0016] As a preferred embodiment of this utility model, the upper fluid channel includes two second channels disposed between the outer cylinder and the inner cylinder, and arranged side by side;

[0017] A second dividing plate is provided between the two second channels. The lower end of the second dividing plate is provided with a second lower notch that connects the two channels. The middle part of the second dividing plate divides the two channels into channels through which liquid flows.

[0018] A first flared opening communicating with the two second channels is provided on the side wall of the upper cavity; and,

[0019] The outer cylinder is provided with a second connection port for communicating with the two second channels and the second lower notch.

[0020] In a preferred embodiment of this utility model, the second connection port is centered on the second partition plate, so that the parts of the two second channels that correspond one-to-one with the second connection port are the same.

[0021] As a preferred embodiment of this utility model, the lower fluid channel is configured as at least two non-adjacent channels, and a third channel is provided between the outer cylinder and the inner cylinder;

[0022] A second flared portion communicating with the third channel is provided on the side wall of the lower cavity;

[0023] One port of the third channel is a straight-through connection port.

[0024] In a preferred embodiment of this utility model, the lower extension is a connecting portion disposed on the outer surface of the inner cylinder.

[0025] As a preferred embodiment of this utility model, the connecting block is circular, square, or any polygonal shape.

[0026] A vibration damper, the vibration damper comprising:

[0027] A liquid storage cylinder, which contains a separate working cylinder;

[0028] The aforementioned integrated energy storage device connecting block has its outer cylinder top and protrusion top sealingly fitted with the liquid storage cylinder and the working cylinder, respectively.

[0029] Two solenoid valves are connected to the connecting block, and a floating piston is provided in the lower cavity to divide the lower cavity into an energy storage cavity and a gas cavity. An outer connecting sleeve is provided on the connecting part.

[0030] As a preferred embodiment of this utility model, a solenoid valve located on one side of the connecting block has two openings that are respectively connected to the first connecting port and the annular channel;

[0031] The other solenoid valve has two openings that are connected to the second connection port and the annular channel, respectively.

[0032] As a preferred embodiment of this utility model, one of the openings of the two solenoid valves may or may not be connected through the annular channel.

[0033] This invention offers the following advantages: By setting multiple fluid channels, the flowing liquid in the fluid channels connected to the connecting block only contacts the connecting block, and the fluid channels are interconnected end-to-end, optimizing the liquid flow path, reducing flow unevenness, and improving the stability and uniformity of the liquid flow. At least two lower fluid channels are provided, connected or disconnected via an annular channel, offering more fluid control options, enhancing the flexibility of fluid control, better adapting to different working conditions, and more precisely controlling the liquid flow, thereby improving the response speed of the vibration damper. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0035] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model.

[0036] Figure 2 This is a top view of the structure of this utility model.

[0037] Figure 3This is a bottom view of the structure of this utility model.

[0038] Figure 4 This is a cross-sectional view of the external fluid channel of this utility model.

[0039] Figure 5 This is a schematic diagram showing the structure of the first connection port and the corresponding connected portion of the external fluid channel of this utility model.

[0040] Figure 6 This is a cross-sectional view of the upper fluid channel of this utility model.

[0041] Figure 7 This is a cross-sectional view of the lower fluid channel structure of this utility model.

[0042] Figure 8 This is a schematic diagram of the assembly structure of the connecting block and the vibration damper of this utility model.

[0043] Explanation of reference numerals in the attached figures:

[0044] 100. Inner cylinder; 11. Upper extension; 12. Middle section; 13. Lower extension; 14. Middle partition; 15. Upper cavity; 16. Lower cavity; 17. Protrusion; 18. Connecting part; 19. Annular channel; 200. Outer cylinder; 300. External fluid channel; 31. First channel; 32. First partition plate; 321. Upper notch; 322. First lower notch; 33. Arc-shaped flow channel; 34. First connecting port; 400. Upper fluid channel; 41. Second 42. Second partition plate; 421. Second lower notch; 43. Second connection port; 44. First flared section; 500. Lower fluid channel; 51. Third channel; 52. Second flared section; 53. Straight-through connection port; 600. Liquid storage cylinder; 61. Restoration chamber; 700. Working cylinder; 71. Compression chamber; 800. Solenoid valve; 81. Solenoid valve housing; 900. Floating piston; 91. Energy storage chamber; 92. Gas chamber; 1000. Outer connecting sleeve. Detailed Implementation

[0045] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0046] See Figure 1As shown, this utility model is an integrated energy storage device connecting block. The connecting block can be made by forging or casting processes. Its shape can be designed as a circle, square or any polygon, or any other regular or irregular shape according to actual needs and functions.

[0047] The connecting block includes an inner cylinder 100, which is divided into an upper cavity 15 and a lower cavity 16 by a middle partition 14. The upper cavity 15 and the lower cavity 16 have a hole structure with one end open. The upper and lower end faces of the middle partition 14 respectively form the bottom of the two chambers, making the upper cavity 15 and the lower cavity 16 independent chambers, which can perform their respective functions.

[0048] The inner cylinder 100 is further divided into an upper extension 11, a middle extension 12, and a lower extension 13, which are connected in sequence. The upper extension 11 protrudes from the top of the outer cylinder 200, the lower extension 13 is lower than the bottom of the outer cylinder 200, and the middle extension 12 is connected to the outer cylinder 200.

[0049] The upper extension 11 is surrounded by a protrusion 17 that is higher than the top of the inner cylinder 100. This design not only enhances the rigidity of the structure, but also provides more space for the arrangement of fluid channels. The lower extension 13 is a connecting part 18 provided on the outer surface of the inner cylinder 100. The design of these protrusions 17 and connecting parts 18 allows for the assembly of other components, ensuring that the connecting block can achieve a tight fit and sealed connection with other components of the shock absorber.

[0050] An outer cylinder 200 is mounted on the inner cylinder 100. An external fluid channel 300 is provided between the outer cylinder 200 and the inner cylinder 100. An upper fluid channel 400 is located at the upper cavity 15, and a lower fluid channel 500 is located at the lower cavity 16. The three channels are connected end to end. This multi-channel design allows the liquid to flow quickly and uniformly between different channels, thereby improving the dynamic response speed of the vibration damper. When the vibration damper is subjected to external impact or vibration, it can adjust the liquid flow more quickly, improving the overall vibration damping effect and stability. In addition, it reduces energy loss and improves the energy absorption and release efficiency of the vibration damper, thereby enhancing the overall performance of the vibration damper. It also makes the overall structure more compact. This integrated design not only saves space but also achieves multi-functional integration, enabling the connecting block to perform complex fluid control functions within a limited space.

[0051] See Figure 4 As shown, the external fluid channel 300 includes at least one first channel 31 opened along the height direction of the protrusion 17 and the outer cylinder 200. Preferably, two first channels 31 are arranged in the direction of the protrusion 17 and are arranged side by side.

[0052] A first dividing plate 32 is provided between the two first channels 31. The upper and lower ends of the first dividing plate 32 are respectively provided with an upper notch 321 and a lower notch 322 connecting the two channels, allowing liquid to flow between the upper notch 321 and the lower notch 322. The middle part of the first dividing plate 32 separates the two channels into channels for liquid flow, while also connecting the two channels through the upper notch 321 and the lower notch 322. This makes the liquid flow path more rational and the distribution more uniform, reducing flow resistance and local pressure concentration, thereby improving the efficiency and stability of fluid flow.

[0053] To further optimize fluid flow, refer to Figure 2 As shown, the protrusion 17 is provided with an arc-shaped flow channel 33, which extends the opening size of the two first channels 31, increases the cross-sectional area for liquid flow, and helps to improve the flow efficiency of the liquid and reduce the flow resistance. The outer cylinder 200 is provided with a first connection port 34 for communicating with the two first channels 31 and the first lower notch 322.

[0054] The first connection port 34 is distributed with the first partition plate 32 as the center line, so that the parts of the two first channels 31 and the first connection port 34 are exactly the same, such as Figure 5 As shown, this ensures uniform flow distribution of the liquid in the two channels, avoiding performance fluctuations caused by flow asymmetry, thereby improving the stability and reliability of the vibration damper.

[0055] Additionally, see Figure 6 As shown, the upper fluid channel 400 includes two second channels 41 disposed between the outer cylinder 200 and the inner cylinder 100, and arranged side by side. The number of second channels 41 can also be adjusted, increased or decreased according to actual needs.

[0056] A second dividing plate 42 is provided between the two second channels 41. The lower end of the second dividing plate 42 is provided with a second lower notch 421 that connects the two channels. The middle part 12 of the second dividing plate 42 divides the two channels into channels for liquid to flow through.

[0057] The side wall of the upper cavity 15 is provided with a first flared opening 44 communicating with two second channels 41; and,

[0058] The outer cylinder 200 is provided with a second connection port 43 for communicating with the two second channels 41 and the second lower notch 421.

[0059] With the second partition plate 42 as the center line, the second connection port 43 is such that the parts of the two second channels 41 and the second connection port 43 are the same.

[0060] Although the structure of the upper fluid channel 400 differs from that of the outer fluid channel 300, and there are also differences in the connection part 18 with the subsequent vibration damper, the technical effects embodied in its design are similar to or even the same as those of the outer fluid channel 300. Specifically, the upper fluid channel 400 also achieves uniformity and efficiency of fluid flow by optimizing the fluid flow path, reducing flow resistance and local pressure concentration, thereby improving the dynamic response speed and overall stability of the vibration damper. In addition, the design of the upper fluid channel 400 also enhances the flexibility of fluid control, enabling it to better adapt to different operating conditions, while improving energy transfer efficiency and the reliability of the vibration damper.

[0061] Since the upper fluid channel 400 and the outer fluid channel 300 are highly consistent in terms of technical effects, to avoid repetition, the specific structural effects of the upper fluid channel 400 will not be elaborated here. Overall, the design of the upper fluid channel 400 also reflects the advantages of multi-channel integrated design, including improved liquid flow efficiency, optimized structural compactness, and enhanced overall performance of the damper.

[0062] In addition, see Figure 3 and 7 As shown, there are at least two lower fluid channels 500, and they are two non-adjacent channels. An annular channel 19 on the inner cylinder 100 connects or disconnects the two lower fluid channels 500. This allows for flexible distribution of liquid flow according to actual needs. Liquid can be allowed to flow between the two lower fluid channels 500 and the annular channel 19, or one lower fluid channel can be connected to the annular channel 19, and the other lower fluid channel can also be connected to the annular channel 19. Here, the annular channel 19 is not a complete annular groove, but rather consists of two pairs of annular channels 19 with 90° arcs (not shown in the figure). Alternatively, the annular channel 19 can be divided into two independent channels to allow the two lower fluid channels 500 to operate independently. This flexibility enhances the shock absorber's adaptability to different operating conditions and improves the accuracy and versatility of fluid control.

[0063] A third circular channel 51 is provided between the outer cylinder 200 and the inner cylinder 100, and a second flared portion 52 communicating with the third circular channel 51 is provided on the side wall of the lower cavity 16, so that the liquid can be more evenly distributed and flowed, reducing flow resistance and local pressure concentration. One end of the third circular channel 51 is a straight connection port 53, which allows the liquid to flow through the third circular channel 51 to the annular channel 19 more quickly and efficiently.

[0064] The shapes of the first channel 31, the second channel 41, and the third channel 51 mentioned above can be any irregular shape such as circle, square, or waist, and all are within the protection range.

[0065] In another embodiment, see Figure 8 As shown, this utility model is a vibration damper, which includes: a liquid storage cylinder 600, in which a working cylinder 700 is disposed and separated therefrom, the gap between the liquid storage cylinder and the working cylinder 700 is a recovery chamber 61, and the interior of the working cylinder 700 is a compression chamber 71.

[0066] As in the integrated energy storage connector block in the above embodiment, the top of the outer cylinder 200 and the top of the protrusion 17 on the connector block are respectively sealed to the liquid storage cylinder 600 and the working cylinder 700. The former is fitted by welding or by threaded connection or riveting with a sealing device. The latter can be fitted directly or by interference fit and / or welding through a transition block (not shown in the figure), avoiding liquid leakage between the recovery chamber 61 and the compression chamber 71.

[0067] Two solenoid valves 800 are connected to the connecting block and are welded together. The two solenoid valves 800 can be arranged in the same plane, have a height difference, or be arranged at any angle by rotating 360° without interfering with the surrounding environment.

[0068] A floating piston 900 is provided in the lower cavity 16 to divide the lower cavity 16 into an energy storage cavity 91 and a gas cavity 92. The floating piston 900 can also be a diaphragm (not shown in the figure). The floating piston 900 or the diaphragm moves downward or upward as the liquid in the energy storage cavity 91 increases or decreases.

[0069] An outer connecting sleeve 1000 is provided on the connecting part 18. The outer connecting sleeve 1000 is welded or threaded to a device with a sealing mechanism. The gas in the gas chamber 92 can be inflated using a dedicated inflator-welder. The gas can be inflated through a small hole (not shown in the figure) on the connecting sleeve connected to the connecting part 18, and then sealed. The outer connecting sleeve 1000 is directly connected to the fork arm (not shown in the figure) or through a welded lifting ring (not shown in the figure), and the outer connecting sleeve 1000 is connected to the swing arm (not shown in the figure) after a bushing is press-fitted in.

[0070] In addition, one solenoid valve 800 located on one side of the connecting block has two openings that are connected to the first connecting port 34 and the annular channel 19, respectively; another solenoid valve 800 has two openings that are connected to the second connecting port 43 and the annular channel 19, respectively. The housing of the solenoid valve 800 is welded to the connecting block, and a sealing ring is provided between the two openings of the solenoid valve 800 and the connecting block to prevent leakage.

[0071] One of the openings of the two solenoid valves 800 is connected or not connected through the annular channel 19. That is, one opening of the two solenoid valves 800 can be connected to each other through the annular channel 19, or a partition is provided on the annular channel 19 to divide the annular channel 19 into two independent channels, and the two independent channels are respectively connected to one opening of the two solenoid valves 800.

[0072] The above-mentioned shock absorber is applied to automobiles. When the shock absorber performs recovery damping, the liquid flow direction is as follows: the liquid in the recovery chamber 61 enters the first solenoid valve 800 through the arc-shaped flow channel 33, the two first channels 31, and the first connection port 34. At this time, the damping orifice is adjustable. Then, it flows out from the other opening of the solenoid valve 800 into the annular channel 19, then into the third channel 51 in the lower fluid channel 500, and then into the energy storage chamber 91. Then, it flows out from the third channel 51 in another lower fluid channel 500 into the annular channel 19, and then into the one-way valve in another solenoid valve 800. The liquid continues to flow out from one opening of the solenoid valve 800 into the second connection port 43, the two second channels 41, and the first flared part 44, and finally reaches the compression chamber 71 that is connected to the upper chamber 15.

[0073] When the shock absorber is in compression damping mode, the liquid flow direction is opposite to that when the shock absorber is in restorative damping mode, but the liquid path is the same. The principle will not be elaborated here.

[0074] When the shock absorber actively lifts the vehicle body, the specific flow direction of the liquid is as follows: the liquid flows from the recovery chamber 61 to the arc-shaped flow channel 33, the two first channels 31, and the first connection port 34. At the same time, the liquid in the energy storage chamber 91 flows out through the third channel 51 in a lower fluid channel 500 into the annular channel 19, pushes out the one-way valve in the solenoid valve 800, and flows into the inner cavity of the solenoid valve 800. At this time, the liquid in the cavity flows through the oil pipe (not shown in the figure) connected to the solenoid valve 800 housing to the bidirectional electro-hydraulic pump (not shown in the figure). The bidirectional electro-hydraulic pump drives the liquid to flow into the oil pipe connected to the other solenoid valve 800 housing and into the inner cavity of the other solenoid valve 800. At this time, the liquid flows to the second connection port 43, the two second channels 41 and the first flared part 44, and reaches the compression chamber 71. At this time, the pressure increases, realizing the active lifting of the vehicle body.

[0075] When the shock absorber actively lifts the wheel, the liquid flow direction is as follows: the liquid flows from the compression chamber 71 to the first flared part 44, the two second channels 41, and the second connection port 43. At the same time, the liquid in the energy storage chamber 91 flows out through the third channel 51 in a lower fluid channel 500 into the annular channel 19, pushes out the one-way valve in the solenoid valve 800, and flows into the inner cavity of the solenoid valve 800. At this time, the liquid in the cavity flows through the oil pipe connected to the solenoid valve 800 housing to the bidirectional electro-hydraulic pump. The bidirectional electro-hydraulic pump drives the liquid to flow into the oil pipe connected to the other solenoid valve 800 housing and into the inner cavity of the other solenoid valve 800. At this time, the liquid flows to the first connection port 34, the two first channels 31, and the arc-shaped flow channel 33, and reaches the recovery chamber 61. At this time, the pressure increases, realizing the active wheel lifting.

[0076] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An integrated energy storage device connection block, characterized in that, include: The inner cylinder is divided into an upper cavity and a lower cavity by an intermediate partition. An outer cylinder is disposed on the inner cylinder, an external fluid channel is provided between the outer cylinder and the inner cylinder, an upper fluid channel is provided in the upper cavity, and a lower fluid channel is provided in the lower cavity, and the three channels are connected end to end. The lower fluid channel is at least two, and an annular channel on the inner cylinder allows the two lower fluid channels to be connected or disconnected.

2. The integrated energy storage device connecting block according to claim 1, characterized in that: The inner cylinder includes an upper extension, a middle extension, and a lower extension connected in sequence. The upper extension protrudes from the top of the outer cylinder, and the lower extension is lower than the bottom of the outer cylinder.

3. The integrated energy storage device connecting block according to claim 2, characterized in that: The upper extension is surrounded by a protrusion higher than the top of the inner cylinder for assembly of other components.

4. The integrated energy storage device connecting block according to claim 3, characterized in that: The external fluid channel includes at least one first channel formed along the height direction of the protrusion and the outer cylinder.

5. The integrated energy storage device connecting block according to claim 3, characterized in that: The external fluid channel includes two first channels opened along the height direction of the protrusion and the outer cylinder, and arranged side by side; A first dividing plate is provided between the two first channels. The upper and lower ends of the first dividing plate are respectively provided with an upper notch and a lower notch connecting the two channels. The middle part of the first dividing plate divides the two channels into channels for liquid to flow through. The protrusion is provided with an arc-shaped flow channel to extend the opening size of the two first channels, and the outer cylinder is provided with a first connection port for communicating with the two first channels and the first lower notch.

6. The integrated energy storage device connecting block according to claim 5, characterized in that: With the first connector as the center line, the two first channels have the same part corresponding to the first connector.

7. The integrated energy storage device connecting block according to claim 1, characterized in that: The upper fluid channel includes two second channels disposed between the outer cylinder and the inner cylinder, and arranged side by side; A second dividing plate is provided between the two second channels. The lower end of the second dividing plate is provided with a second lower notch that connects the two channels. The middle part of the second dividing plate divides the two channels into channels through which liquid flows. A first flared opening communicating with the two second channels is provided on the side wall of the upper cavity; and, The outer cylinder is provided with a second connection port for communicating with the two second channels and the second lower notch.

8. The integrated energy storage device connecting block according to claim 7, characterized in that: The second connection port is centered on the second partition, so that the parts of the two second channels that correspond one-to-one with the second connection port are the same.

9. The integrated energy storage device connecting block according to claim 1, characterized in that: The lower fluid channel is configured with at least two non-adjacent channels, and a third channel is provided between the outer cylinder and the inner cylinder; A second flared portion communicating with the third channel is provided on the side wall of the lower cavity; One port of the third channel is a straight-through connection port.

10. The integrated energy storage device connecting block according to claim 2, characterized in that: The lower extension is a connecting part disposed on the outer surface of the inner cylinder.

11. The integrated energy storage device connecting block according to claim 1, characterized in that: The connecting block can be circular, square, or any polygonal shape.

12. A vibration damper, characterized in that, The vibration damper includes: A liquid storage cylinder, which contains a separate working cylinder; The integrated energy storage device connecting block as described in any one of claims 1-11, wherein the top of the outer cylinder and the top of the protrusion on the connecting block are respectively sealed to the liquid storage cylinder and the working cylinder; Two solenoid valves are connected to the connecting block, and a floating piston is provided in the lower cavity to divide the lower cavity into an energy storage cavity and a gas cavity. An outer connecting sleeve is provided on the connecting part.

13. The vibration damper according to claim 12, characterized in that: A solenoid valve located on one side of the connecting block has two openings that are connected to the first connecting port and the annular channel, respectively. The other solenoid valve has two openings that are connected to the second connection port and the annular channel, respectively.

14. The vibration damper according to claim 12, characterized in that: One of the openings of the two solenoid valves may or may not be connected through the annular channel.

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