A new type of flow valve core for shock absorber

Abstract

The utility model relates to the field of damper, disclose a novel damper flow valve core, including valve core body, first sealing washer and second sealing washer, the axial both ends of valve core body are equipped with the first connecting part and the second connecting part that intercommunicate respectively, the first connecting part is used for connecting damper intermediate cylinder, the second connecting part is used for connecting damper solenoid valve, first sealing washer installs on the first connecting part, second sealing washer installs on the second connecting part. Valve core body plays the main fixed and support effect, first sealing washer is responsible for the sealing between damper flow valve core and damper intermediate cylinder, second sealing washer is responsible for the sealing between damper flow valve core and damper solenoid valve, prevents the valve core body axial both ends junction place from leaking oil. The integrated valve core body has unified the assembly reference, effectively solved the problem that the separated valve core needs twice assembly, the concentricity is not easy to guarantee in the background art, improves production and assembly efficiency.

Description

Technical Field

[0001] This utility model relates to the field of vibration damper technology, and more specifically, to a novel vibration damper flow valve core. Background Technology

[0002] With the booming development of new energy vehicles in China, in order to better adapt to the chassis of new energy vehicles and reflect the advantages of electrification, some well-known domestic and foreign shock absorber manufacturers have begun to actively develop electronically controlled shock absorbers to increase the competitiveness of their products. An electronically controlled shock absorber is a chassis component that can adjust the damping force in real time according to conditions. In the assembly process of electronically controlled shock absorbers, the most important components and assembly processes are the assembly of the solenoid valve port flow valve core and related components.

[0003] Existing flow valve cores mainly employ two types: separate and integrated. Separate cores consist of two parts: the rear end mates with the intermediate cylinder, and the front end mates with the valve seat. The disadvantages are poor concentricity, difficult assembly requiring two assembly steps, impacting production efficiency and increasing costs. Integrated cores, on the other hand, have high requirements for the flatness of the mating surfaces. Poor flatness can easily lead to poor sealing at the solenoid port, causing oil leakage and unstable damping force. Furthermore, magnetic impurities in the oil can easily damage the performance of the solenoid valve over long-term use, making it impossible to maintain stable operation of the flow valve core. Utility Model Content

[0004] To address at least one of the aforementioned problems, this utility model first provides a novel shock absorber flow valve core, comprising a valve core body, a first sealing ring, and a second sealing ring. The valve core body has a first connecting portion and a second connecting portion that communicate with each other at its axial ends. The first connecting portion is used to connect to the intermediate cylinder of the shock absorber, and the second connecting portion is used to connect to the solenoid valve of the shock absorber. The first sealing ring is installed on the first connecting portion, and the second sealing ring is installed on the second connecting portion.

[0005] Optionally, a first mounting groove is provided on the outer side wall of the end of the first connecting part away from the second connecting part, the first sealing ring is sleeved in the first mounting groove, the outer wall of the first sealing ring protrudes radially from the first mounting groove, and the first sealing ring and the inner wall of the connection port of the shock absorber intermediate cylinder are sealed together.

[0006] Optionally, the second connecting part is provided with an annular second mounting groove at one end away from the first connecting part, and the second sealing ring is installed in the second mounting groove. The outer wall of the second sealing ring in the axial direction is axially sealed to the connecting end of the shock absorber solenoid valve.

[0007] Optionally, the second connecting part is provided with an annular first mating surface and an annular second mating surface, the first mating surface and the second mating surface are respectively located on the inner ring side and the outer ring side of the second mounting groove, and both the first mating surface and the second mating surface are axially abutting against the connecting end of the shock absorber solenoid valve.

[0008] Optionally, an oil flow plate is coaxially arranged on the valve core body. The oil flow plate is located between the first connecting part and the second connecting part. The oil flow plate has a plurality of oil flow holes distributed circumferentially. After the oil enters from the first connecting part, it flows into the shock absorber solenoid valve after passing through the second connecting part, and finally flows out from the oil flow holes.

[0009] Optionally, the first connecting part, the second connecting part, and the oil flow tray are integrally formed.

[0010] Optionally, the inner wall diameter of the first connecting part is the same as the inner wall diameter of the second connecting part, and the outer wall diameter of the first connecting part is smaller than the outer wall diameter of the second connecting part.

[0011] Optionally, it also includes a magnet, which is installed in the first connecting portion and is used to attract magnetic impurities as the oil passes through.

[0012] Optionally, the first connecting portion is provided with a guide slope at one end away from the second connecting portion. The guide slope includes an inner diameter portion and an outer diameter portion. The diameter of the inner diameter portion is smaller than the diameter of the outer diameter portion. The inner diameter portion is closer to the second connecting portion than the outer diameter portion. The length of the magnet is interference-fitted with the diameter of the inner diameter portion. The guide slope is used to guide the magnet to slide from the outer diameter portion to the inner diameter portion and engage and fix it with the inner diameter portion.

[0013] Optionally, the outer surface of the magnet is plated with a nickel layer or a nickel-copper layer.

[0014] Compared to existing technologies, the novel shock absorber flow valve core of this utility model:

[0015] 1. The valve core body plays a major role in fixing and supporting the valve. The first sealing ring is responsible for sealing between the shock absorber flow valve core and the shock absorber intermediate cylinder, and the second sealing ring is responsible for sealing between the shock absorber flow valve core and the shock absorber solenoid valve, preventing oil leakage at the axial connection of the valve core body. The integrated valve core body unifies the assembly standard and effectively solves the problems of separate valve cores requiring two assembly steps and difficulty in ensuring concentricity in the background technology, thus improving production and assembly efficiency.

[0016] 2. By setting the first sealing ring and the second sealing ring, the requirements for the radial dimension of the first connecting part and the flatness of the mating surface of the second connecting part are relaxed, avoiding the risk of sealing failure and oil leakage due to poor dimensions or flatness, and improving the sealing reliability and tolerance to manufacturing errors of parts.

[0017] 3. The built-in magnet can effectively adsorb iron filings and other magnetic impurities in the circulating oil, preventing impurities from entering precision components such as the shock absorber solenoid valve, reducing the risk of jamming and abnormal wear, significantly improving the cleanliness and long-term reliability of the entire hydraulic system of the shock absorber, and ensuring stable performance.

[0018] 4. The one-piece molding process ensures the coaxiality and structural integrity of all components, completely solving the problem of cumulative errors caused by separate assembly. This one-piece molding design is not only easy to process, allowing for manufacturing using methods such as cold heading, machining, and stamping, but also facilitates production line assembly, improving production cycle time and efficiency. Furthermore, the oil outlets on the oil distribution plate can be made using stamping dies, eliminating the need for additional machining and saving costs. Attached Figure Description

[0019] Figure 1 The structure of the novel shock absorber flow valve core in this embodiment of the utility model Figure 1 ;

[0020] Figure 2 The structure of the novel shock absorber flow valve core in this embodiment of the utility model Figure 2 ;

[0021] Figure 3 This is a cross-sectional view of the flow valve core of the novel shock absorber according to an embodiment of the present utility model;

[0022] Figure 4 This is a schematic diagram of the installation structure of the novel shock absorber flow valve core according to an embodiment of this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. First connecting part; 11. First mounting groove; 12. Guide slope; 121. Inner diameter part; 122. Outer diameter part; 2. Second connecting part; 21. Second mounting groove; 22. First mating surface; 23. Second mating surface; 3. First sealing ring; 4. Second sealing ring; 5. Oil flow plate; 51. Oil flow hole; 6. Magnet; 7. Intermediate cylinder of shock absorber; 8. Solenoid valve of shock absorber. Detailed Implementation

[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0026] This utility model embodiment provides a novel shock absorber flow valve core, combined with... Figures 1 to 4 As shown, the valve core body includes a valve core body, a first sealing ring 3 and a second sealing ring 4. The valve core body has a first connecting part 1 and a second connecting part 2 that are interconnected at both ends of its axial direction. The first connecting part 1 is used to connect the intermediate cylinder 7 of the shock absorber, and the second connecting part 2 is used to connect the solenoid valve 8 of the shock absorber. The first sealing ring 3 is installed on the first connecting part 1, and the second sealing ring 4 is installed on the second connecting part 2.

[0027] like Figure 1 As shown, in this embodiment, both the first connecting part 1 and the second connecting part 2 are hollow cylindrical shapes. The valve core body plays a major role in fixing and supporting the valve. The first sealing ring 3 is responsible for sealing between the shock absorber flow valve core and the shock absorber intermediate cylinder 7, and the second sealing ring 4 is responsible for sealing between the shock absorber flow valve core and the shock absorber solenoid valve 8, preventing oil leakage at the axial connection points of the valve core body. The integrated valve core body unifies the assembly benchmark, effectively solving the problem of separate valve cores requiring two assembly steps and difficulty in ensuring concentricity in the prior art, thus improving production and assembly efficiency. The direction of oil flow is... Figure 4 The direction indicated by the dashed line is the direction of outflow, with the arrow pointing outwards. The intermediate cylinder and solenoid valve are existing technologies within the shock absorber and will not be described in detail here.

[0028] like Figure 3 As shown, optionally, a first mounting groove 11 is provided on the outer side wall of the end of the first connecting part 1 away from the second connecting part 2, the first sealing ring 3 is sleeved in the first mounting groove 11, the outer wall of the first sealing ring 3 protrudes radially from the first mounting groove 11, and the first sealing ring 3 and the inner wall of the connection port of the shock absorber intermediate cylinder 7 are sealed together.

[0029] In this embodiment, by setting the first sealing ring 3 on the first connecting part 1, the adaptation requirements of the first connecting part 1 for the radial dimension are relaxed, avoiding the sealing failure and oil leakage risk caused by poor flatness of the integrated hard connection, and improving the sealing reliability and tolerance to the manufacturing error of the parts.

[0030] like Figure 3 As shown, optionally, the second connecting part 2 is axially recessed at one end away from the first connecting part 1 with an annular second mounting groove 21, the second sealing ring 4 is installed in the second mounting groove 21, and the outer wall of the second sealing ring 4 in the axial direction is axially sealed to the connecting end of the shock absorber solenoid valve 8.

[0031] In this embodiment, a second sealing ring 4 is provided on the end face of the second connecting part 2 to abut and seal against the connecting end of the shock absorber solenoid valve 8. Furthermore, other internal components or limiting structures of the shock absorber axially compress the second connecting part 2 and the shock absorber solenoid valve 8, ensuring a reliable seal at the mating surface. This eliminates excessive constraints on radial dimensional accuracy during the sealing process, resulting in a more stable and reliable seal and further preventing potential oil leakage at the solenoid valve port. This protects the solenoid valve from performance failure during long-term use.

[0032] like Figure 1 As shown, optionally, the second connecting part 2 is provided with an annular first mating surface 22 and an annular second mating surface 23. The first mating surface 22 and the second mating surface 23 are respectively located on the inner ring side and the outer ring side of the second mounting groove 21. The first mating surface 22 and the second mating surface 23 are axially abutted against the connecting end of the shock absorber solenoid valve 8.

[0033] In this embodiment, the first mating surface 22 and the second mating surface 23 simultaneously abut against the end of the solenoid valve, forming a stable axial positioning and support. This limits the possible skewing or deformation of the valve core under pressure, ensuring that the second sealing ring 4 is subjected to uniform force, thereby maintaining a long-term reliable sealing state and enhancing the rigidity of the overall structure, as well as increasing the stability of the damping force of the shock absorber product. Simultaneously, the presence of the second sealing ring 4 reduces the flatness accuracy requirements of the first mating surface 22 and the second mating surface 23. In contrast, the existing integrated flow valve core in the prior art only uses end face sealing with the shock absorber solenoid valve 8, requiring high flatness of the contact surfaces. When the flatness of the two contact surfaces is poor, oil leakage is easily caused.

[0034] like Figure 1 and Figure 4 As shown, optionally, an oil flow plate 5 is coaxially arranged on the valve core body. The oil flow plate 5 is located between the first connecting part 1 and the second connecting part 2. The oil flow plate 5 has a plurality of oil flow holes 51 distributed circumferentially. After the oil enters from the first connecting part 1, it flows into the shock absorber solenoid valve 8 after passing through the second connecting part 2, and finally flows out from the oil flow holes 51.

[0035] In this embodiment, the oil flow plate 5 is disc-shaped. The structure of the oil flow plate 5 optimizes the oil circuit, allowing the oil to flow out evenly and smoothly through the circumferentially distributed oil flow holes 51 after being regulated by the solenoid valve. This is beneficial for the stable flow and pressure balance of the oil, making the shock absorber work smoothly and efficiently. At the same time, a limiting block is provided inside the shock absorber housing. The oil flow plate 5 abuts against the limiting block in the axial direction to restrict the installation position of the flow valve core. It also works in conjunction with the shock absorber solenoid valve 8 to axially press and enhance the sealing effect.

[0036] like Figure 3As shown, optionally, the first connecting part 1, the second connecting part 2, and the oil flow tray 5 are integrally formed.

[0037] In this embodiment, the one-piece molding process ensures the coaxiality and structural integrity of the components, completely solving the problem of cumulative errors caused by separate assembly. This one-piece molding design is not only easy to process, allowing for manufacturing using methods such as cold heading, machining, and stamping, but also easy to assemble on production lines, improving production cycle time and efficiency. Simultaneously, the oil outlets 51 on the oil outlet plate 5 can be made using stamping dies, eliminating the need for additional machining and saving costs.

[0038] like Figure 3 As shown, optionally, the inner wall diameter of the first connecting part 1 is the same as the inner wall diameter of the second connecting part 2, and the outer wall diameter of the first connecting part 1 is smaller than the outer wall diameter of the second connecting part 2.

[0039] In this embodiment, the consistent inner diameter ensures smooth and abrupt oil passage flow, reducing turbulence and pressure loss. The difference in outer diameter allows the valve core structure to better adapt to different mounting interface sizes at both ends, enhancing the design's adaptability and rationality.

[0040] like Figure 2 and Figure 4 As shown, optionally, a magnet 6 is also included, which is installed in the first connecting part 1, and the magnet 6 is used to adsorb magnetic impurities when the oil passes through.

[0041] In this embodiment, the built-in magnet 6 can effectively adsorb iron filings and other magnetic impurity particles circulating in the oil, preventing impurities from entering precision components such as the shock absorber solenoid valve 8, reducing the risk of jamming and abnormal wear, significantly improving the cleanliness and long-term working reliability of the entire hydraulic system of the shock absorber, and ensuring stable performance.

[0042] It is worth noting that the shock absorbers on the market are non-destructible components, therefore the magnet 6 remains inside the flow valve core to attract impurities. The radial cross-section of the magnet 6 is smaller than that of the first connecting part 1, so it will not block the first connecting part 1 or hinder oil delivery. Iron filings and other magnetic impurity particles are extremely small and almost invisible to the naked eye when dispersed in the oil. Even after long-term adsorption, they will not form bumps on the magnet 6 that would block oil delivery.

[0043] like Figure 2As shown, optionally, the first connecting portion 1 is provided with a guide slope 12 at one end away from the second connecting portion 2. The guide slope 12 includes an inner diameter portion 121 and an outer diameter portion 122. The diameter of the inner diameter portion 121 is smaller than the diameter of the outer diameter portion 122. The inner diameter portion 121 is closer to the second connecting portion 2 than the outer diameter portion 122. The length of the magnet 6 is interference-fitted with the diameter of the inner diameter portion 121. The guide slope 12 is used to guide the magnet 6 to slide from the outer diameter portion 122 to the inner diameter portion 121 and engage and fix it with the inner diameter portion 121.

[0044] In this embodiment, the guide slope 12 design facilitates the convenient and accurate installation of the magnet 6. The magnet 6 is pressed into the guide slope 12 using external tools or equipment until it is locked in place with the inner diameter portion 121, preventing displacement or detachment under oil impact. This simplifies the assembly process and improves production efficiency and component positioning reliability. The magnet 6 is a cuboid with rounded corners, which reduce wear on the guide slope 12 during installation. Because the oil enters from the first connecting portion 1 and flows out from the second connecting portion 2, the guiding direction of the guide slope 12 is the same as the oil flow direction. The guide slope 12 not only guides the installation of the magnet 6 but also guides the oil flow into the first connecting portion 1. Since the oil flow direction is the same as the magnet 6 installation direction, the magnet 6 can be more tightly locked into the inner diameter portion 121 under the impact of the oil flow.

[0045] Optionally, the outer surface of the magnet 6 is plated with a nickel layer or a nickel-copper layer.

[0046] In this embodiment, the nickel or nickel-copper plating layer provides effective corrosion protection for the magnet 6, preventing it from rusting in the long-term contact with the oil environment, thereby ensuring the long-term stability of its adsorption performance and preventing rust products from contaminating the oil, thus extending the service life of the components and the entire system.

[0047] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] The above embodiments are merely illustrative of several implementation methods of this disclosure, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of this disclosure, and these modifications and improvements all fall within the protection scope of this disclosure.

Claims

1. A novel shock absorber flow valve core, characterized in that, The valve core body includes a valve core body, a first sealing ring (3) and a second sealing ring (4). The valve core body has a first connecting part (1) and a second connecting part (2) that are interconnected at both ends of its axial direction. The first connecting part (1) is used to connect the intermediate cylinder (7) of the shock absorber, and the second connecting part (2) is used to connect the solenoid valve (8) of the shock absorber. The first sealing ring (3) is installed on the first connecting part (1), and the second sealing ring (4) is installed on the second connecting part (2).

2. The novel shock absorber flow valve core according to claim 1, characterized in that, The first connecting part (1) is provided with a first mounting groove (11) on the outer side wall of the end away from the second connecting part (2). The first sealing ring (3) is fitted in the first mounting groove (11). The outer wall of the first sealing ring (3) protrudes radially from the first mounting groove (11). The first sealing ring (3) and the inner wall of the connection port of the shock absorber intermediate cylinder (7) are sealed together.

3. The novel shock absorber flow valve core according to claim 1, characterized in that, The second connecting part (2) is axially recessed at one end away from the first connecting part (1) with an annular second mounting groove (21). The second sealing ring (4) is installed in the second mounting groove (21). The outer wall of the second sealing ring (4) in the axial direction is axially sealed to the connecting end of the shock absorber solenoid valve (8).

4. The novel shock absorber flow valve core according to claim 3, characterized in that, The second connecting part (2) is provided with an annular first mating surface (22) and an annular second mating surface (23). The first mating surface (22) and the second mating surface (23) are located on the inner ring side and the outer ring side of the second mounting groove (21), respectively. The first mating surface (22) and the second mating surface (23) are axially abutted against the connecting end of the shock absorber solenoid valve (8).

5. The novel shock absorber flow valve core according to claim 1, characterized in that, An oil flow plate (5) is coaxially arranged on the valve core body. The oil flow plate (5) is located between the first connecting part (1) and the second connecting part (2). The oil flow plate (5) has several oil flow holes (51) distributed circumferentially. After the oil enters from the first connecting part (1), it flows into the shock absorber solenoid valve (8) after passing through the second connecting part (2), and finally flows out from the oil flow holes (51).

6. The novel shock absorber flow valve core according to claim 5, characterized in that, The first connecting part (1), the second connecting part (2) and the oil flow plate (5) are integrally formed.

7. The novel shock absorber flow valve core according to claim 1, characterized in that, The inner wall diameter of the first connecting part (1) is the same as the inner wall diameter of the second connecting part (2), and the outer wall diameter of the first connecting part (1) is smaller than the outer wall diameter of the second connecting part (2).

8. The novel shock absorber flow valve core according to any one of claims 1-7, characterized in that, It also includes a magnet (6), which is installed in the first connecting part (1) and is used to adsorb magnetic impurities when the oil passes through.

9. The novel shock absorber flow valve core according to claim 8, characterized in that, The first connecting part (1) is provided with a guide slope (12) at one end away from the second connecting part (2). The guide slope (12) includes an inner diameter part (121) and an outer diameter part (122). The diameter of the inner diameter part (121) is smaller than the diameter of the outer diameter part (122). The inner diameter part (121) is closer to the second connecting part (2) than the outer diameter part (122). The length of the magnet (6) is interference-fitted with the diameter of the inner diameter part (121). The guide slope (12) is used to guide the magnet (6) to slide from the outer diameter part (122) to the inner diameter part (121) and to engage and fix it with the inner diameter part (121).

10. The novel shock absorber flow valve core according to claim 8, characterized in that, The outer surface of the magnet (6) is plated with a nickel layer or a nickel-copper layer.

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