Integrally-formed improved shock absorber cylinder body

Abstract

The invention discloses an integrally-formed improved shock absorber cylinder, and relates to the technical field of shock absorbers, the integrally-formed improved shock absorber cylinder comprises an outer barrel and further comprises a piston assembly, the piston assembly is located in a working cavity, the working cavity is located in the outer barrel, the working cavity and the outer barrel are of an integrated structure, the piston assembly is arranged in the working cavity, and the piston assembly is located in the working cavity. When the piston rod moves downwards under the impact load, oil flows in two paths after being pressed, the oil pushes the gear to rotate when flowing through the piston assembly, and when the speed of the piston rod exceeds a threshold value, the rotating speed of the gear is increased, and the supporting spring is compressed. The centrifugal block moves outwards under the action of centrifugal force and is clamped with bosses distributed on the inner wall of the rotating seat at equal intervals, the gear is locked, oil can only pass through narrow circulating grooves in the surface of the gear, damping is increased instantly, a liquid pad is formed to prevent a piston from continuous sprint, and bottoming collision is avoided.

Description

Technical Field

[0001] This invention relates to the field of shock absorber technology, specifically to an integrally molded improved shock absorber cylinder. Background Technology

[0002] The function of the shock absorber cylinder is to convert the energy of the wheel's bounce into the heat energy of the oil and dissipate it quickly, thereby ensuring that the tires always keep in contact with the ground and the vehicle body remains stable.

[0003] Traditional cylinder blocks typically use fixed throttle plates, whose flow area is fixed. When a vehicle drives over speed bumps, potholes, or descents at high speed, the piston gains tremendous downward velocity in a very short time. However, the damping force gradient provided by the throttle plate is insufficient to form a sufficient "fluid cushion" to support the piston in time. As a result, the piston, along with the piston rod, directly impacts the bottom valve or cylinder bottom. Each impact is equivalent to micro-impact fatigue, causing the sealing edges to be sheared and the bottom valve spring to undergo plastic deformation. Over time, the shock absorber develops a "bottoming out" noise and loses its restorative cushioning ability.

[0004] For ease of assembly, split-welded cylinder blocks typically separate the working chamber and the oil reservoir, connecting them only by a narrow channel. When the piston descends at high speed, the volume of the working chamber above the piston expands instantaneously. The oil cannot replenish the reservoir in time, and the local pressure quickly drops below the oil's saturated vapor pressure, causing oil molecules to "tear" into tiny bubbles. Due to the presence of air, the damping force fluctuates wildly, severely affecting the driving experience. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an improved one-piece molded shock absorber cylinder body, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an integrally molded improved shock absorber cylinder, comprising: an outer cylinder, and a piston assembly, wherein the piston assembly is located inside a working chamber, the working chamber is located inside the outer cylinder, the working chamber and the outer cylinder are integrally formed, the piston assembly is disposed inside the working chamber, the piston assembly is connected to a piston rod, the piston assembly is used to dampen the piston rod, a return spring is fitted outside the piston rod, a first connecting seat is fixedly installed at one top end of the piston rod, a compensation component is installed at one top end of the working chamber, the compensation component is used to reduce cavitation inside the working chamber, a first oil storage chamber and a second oil storage chamber are disposed between the working chamber and the inner wall of the outer cylinder, the top end of the working chamber is connected to the inside of the second oil storage chamber through the compensation component, a throttling component is disposed at one bottom end of the working chamber, the throttling component is used to control the flow rate of the medium inside the working chamber to the inside of the second oil storage chamber and the first oil storage chamber, a groove is disposed at the bottom of the working chamber and is connected to the inside of the second oil storage chamber and the first oil storage chamber, and a second connecting seat is installed at the bottom of the outer cylinder.

[0007] Preferably, the piston assembly includes a top cover, the bottom of which is bolted to the piston shell. A gasket is provided between the piston shell and the top cover. A rotating seat is provided inside the piston shell, and the rotating seat is fixedly connected to the inside of the piston shell by screws. A gear is provided inside the rotating seat, the top of which is slidably connected to a centrifugal block. Support springs are provided on both sides of the centrifugal block. The top cover and the piston shell are fastened with bolts and sealed with gaskets to form a detachable rigid whole, which ensures that the high-pressure oil does not leak and facilitates maintenance. The rotating seat is fixed to the piston shell by screws, allowing the gear and centrifugal block to slide together. The speed-sensitive unit, consisting of the block and the support spring, is fully positioned to prevent parts from loosening during high-speed reversal. The top of the gear slides in contact with the centrifugal block, and the support spring continuously provides reset preload. When the piston speed increases suddenly, the gear speed increases synchronously, and the centrifugal force pushes the centrifugal block outward to lock the gear instantly. The flow cross-sectional area drops sharply, and the damping force increases sharply, forming a "liquid cushion" to prevent the piston from continuing to thrust and avoid bottoming out. During the return stroke, the spring quickly resets the centrifugal block, the gear resumes rotation, and the damping automatically drops, achieving stepless variable damping that automatically adjusts with speed, significantly improving the shock absorber's lifespan and ride comfort.

[0008] Preferably, the inner wall of the rotating seat is provided with a protruding structure, and the centrifugal block engages with the protruding structure of the inner wall of the rotating seat through a sliding fit. There are four protruding structures of the inner wall of the rotating seat distributed at equal intervals. The outer wall of the gear is in close contact with the inner wall of the piston shell, and the surface of the gear is provided with a flow groove. The inner wall of the rotating seat is evenly distributed with four protrusions. Under the action of centrifugal force, the centrifugal block can slide outward along the radial direction and engage with any of the protrusions instantly, realizing full-circumference rapid locking, ensuring zero-backlash braking of the gear at high speed, and avoiding damping sudden change lag. The outer wall of the gear and the inner wall of the piston shell are in close contact to form a high-pressure sealing surface to prevent oil leakage and ensure that all flow is concentrated through the flow groove on the surface of the gear. After locking, the flow area is reduced sharply, the damping force increases sharply, forming a reliable "liquid pad" and effectively suppressing the piston from hitting the bottom at high speed.

[0009] Preferably, the piston housing has an upper guide hole at the top and a lower guide hole at the bottom. Both the upper and lower guide holes are connected to a connecting hole. There are two connecting holes, which are located on the inner wall of the piston housing. Two vertical holes are also located inside the piston housing, penetrating the bottom and top of the piston housing. A groove corresponding to the vertical holes is formed on the surface of the top cover. The upper and lower guide holes are interconnected through the double connecting holes, forming a circulation around the gear, allowing the oil to uniformly drive the gear to rotate, resulting in a faster response speed. The double vertical holes penetrate the piston housing and connect directly to the groove in the top cover, acting as the main damping channel during the compression stroke and becoming a shortcut for the oil in the upper chamber to quickly flow back to the lower chamber during the recovery stroke. This achieves bidirectional flow through the same hole, reducing the need for additional valves, simplifying the structure, reducing flow resistance, and improving piston reciprocating efficiency and vibration damping response sensitivity.

[0010] Preferably, a guide rod is fixedly connected to the bottom of the piston housing. The outer wall of the guide rod has two protruding structures, and the outer wall of the guide rod is slidably connected to the first valve plate. The first valve plate has a through hole inside, and the bottom of the first valve plate is in contact with the bottom surface of the piston housing. A first spring is provided at the bottom of the first valve plate, and the first spring is sleeved on the outside of the guide rod. The guide rod is integrally fixed to the piston housing and has double bosses, which provide precise radial positioning and anti-rotation guidance for the first valve plate, avoiding valve plate wear and jamming during high-speed reversal. The through hole inside the valve plate and the boss outside the rod form an annular throttling joint, which fits against the bottom surface of the piston housing to achieve a line seal, preventing backflow of oil during the compression stroke. During the return stroke, the oil pressure in the upper chamber only needs to overcome the preload of the first spring to open the valve plate, allowing the oil to quickly flow back to the lower chamber through the annular throttling joint, through the through hole, and the vertical hole, reducing the recovery damping and accelerating the piston reset.

[0011] Preferably, the compensation component includes two adjusting bolts, which are threadedly connected to the outer wall of the outer cylinder. One end of each adjusting bolt has a rounded structure. The outer wall of the working chamber has two adjusting holes aligned with one end of each adjusting bolt. The surface of each adjusting hole has a rounded concave structure and is connected to the interior of the working chamber. The two adjusting bolts and the threaded pair of the outer cylinder form a stepless fine-tuning mechanism. The rounded ends are precisely fitted with the concave spherical surface of the adjusting holes, ensuring both sealing and linear adjustment of the compensation channel area within the range of zero to maximum flow, thus achieving accurate calibration of the negative pressure oil replenishment. When a momentary vacuum occurs in the upper chamber during the high-speed downward movement of the piston, the oil in the second oil storage chamber can immediately enter the working chamber through the adjusting holes, blocking the generation of cavitation bubbles and avoiding damping abrupt changes and noise.

[0012] Preferably, a support platform is provided at one end of the top of the working chamber. The support platform is an integral structure with the interior of the working chamber. The support platform has a ring shape, and there is a gap between the inner wall of the support platform and the outer wall of the piston rod. A second spring is provided at the top of the support platform, and a lifting block is provided at the top of the second spring. The lifting block has a hollow interior and an open bottom. The outer wall of the lifting block has a slot communicating with the interior. The slot on the outer wall of the lifting block is aligned with a compensation hole through a sliding fit. The compensation hole is opened on the surface of the working chamber. The ring-shaped support platform is integrally formed with the working chamber and serves as the second spring. The lifting block provides a rigid reference, avoiding coaxiality errors caused by separate welding. The lifting block is hollow and open at the bottom, forming an oil buffer chamber. When the oil supply through the adjustment hole is insufficient and the negative pressure in the upper chamber continues to increase, the lifting block is quickly pushed down by the pressure difference and compresses the second spring. Its outer wall groove and compensation hole are instantly aligned. The oil in the second oil storage chamber is directly sent to the upper chamber through the compensation hole, groove, and inner chamber, realizing rapid oil supply through negative pressure differential amplification and blocking cavitation. After the negative pressure disappears, the second spring immediately resets, and the groove and compensation hole are staggered and closed to prevent over-compensation. Thus, the secondary protection against cavitation is completed with pure mechanical feedback, improving damping continuity and sealing life.

[0013] Preferably, the throttling assembly includes a slide rod, which is slidably connected to the bottom of the working chamber. A limit block is fixedly installed at one end of the top of the slide rod. A third spring is fitted outside the slide rod. A second valve plate is provided at the bottom of the third spring. A third valve plate is provided at the bottom of the second valve plate. Both the second and third valve plates are fitted outside the slide rod. A first throttling hole and a second throttling hole are provided between the second and third valve plates. The slide rod is slidably engaged with the bottom of the working chamber and a limit block is provided at the top to provide coaxial guidance for the third spring, the second valve plate, and the third valve plate, preventing the valve plates from deflecting and jamming under the impact of high-speed flow. The preload of the third spring presses the second and third valve plates against the end face of the throttling hole, forming a bidirectional independent line seal. During the compression stroke, the oil first pushes open the third valve plate through the first throttling hole to generate high back pressure, and the damping rises sharply to support the piston and prevent it from hitting the bottom. During the recovery stroke, the oil pushes open the second valve plate through the second throttling hole and flows back quickly, reducing the recovery damping and accelerating the reset.

[0014] This invention provides an improved, one-piece molded shock absorber cylinder body. It has the following advantages: When the piston rod is subjected to an impact load and moves downwards, it synchronously drives the piston assembly to move axially within the working chamber. The volume of the lower chamber of the piston assembly decreases sharply, and the oil, under pressure, flows in two paths: one path enters the upper chamber of the piston assembly through the lower guide hole, connecting hole, gear flow groove, and upper guide hole of the piston housing, forming the main damping channel; the other path pushes open the third valve plate through the bottom hole of the working chamber and the first throttling hole, allowing the oil to flow into the first and second oil storage chambers, completing the energy absorption and temporary storage of the oil during the compression stroke. When the oil flows through the piston assembly, it drives the gear to rotate. When the piston rod speed exceeds the threshold, the gear speed increases, compressing the support spring. Under the action of centrifugal force, the centrifugal block moves outwards and engages with the bosses evenly distributed on the inner wall of the rotating seat. The gear is locked, and the oil can only pass through the narrow flow groove on the gear surface, instantly increasing the damping and forming a "liquid cushion" to prevent the piston from continuing to thrust and avoid bottoming out. At the end of compression, the return spring pushes the piston rod upward. The oil in the first and second oil storage chambers flows back to the working chamber through the third valve plate groove and the second throttling hole, opening the second valve plate. At the same time, the oil in the upper chamber of the piston assembly pushes the first valve plate through the vertical hole and returns to the lower chamber, achieving rapid return. If the piston descends at high speed, causing instantaneous negative pressure in the upper chamber, the normally open compensation channel formed by the adjusting bolt and the adjusting hole replenishes oil first. When the negative pressure continues to increase, the lifting block overcomes the second spring and descends, aligning its side wall groove with the compensation hole. The second oil storage chamber replenishes oil to the upper chamber urgently through the inner cavity of the lifting block, blocking the generation of cavitation bubbles and maintaining damping stability. The entire cylinder body, through the integral molding of the outer cylinder and the working chamber, the speed-sensitive piston, the bidirectional variable throttling, and the multi-stage cavitation suppression structure, simultaneously eliminates bottoming-out and cavitation defects during the compression and recovery strokes, achieving high durability, low noise, and continuously adjustable vibration damping performance. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 For the present invention Figure 2 Enlarged structural diagram at point B; Figure 5 This is an exploded view of the piston assembly of the present invention; Figure 6 This is a schematic diagram of the gear structure of the present invention; Figure 7 This is a schematic diagram of the flow guide hole structure of the present invention; Figure 8 This is a schematic diagram of the flow guide hole structure of the present invention; Figure 9 This is a schematic diagram of the top cover structure of the present invention; Figure 10 This is a schematic diagram of the first oil storage cavity structure of the present invention.

[0016] In the diagram, 1. Outer cylinder; 2. Piston assembly; 201. Top cover; 202. Gasket; 203. Rotary seat; 204. Centrifugal block; 205. Support spring; 206. Gear; 207. Flow groove; 208. Piston shell; 209. Upper guide hole; 210. Lower guide hole; 211. Connecting hole; 212. Vertical hole; 213. First valve plate; 214. First spring; 215. Guide rod; 3. Return spring; 4. First connecting seat; 5. Piston rod; 6. Compensation component; 601. Adjusting bolt; 602. Adjusting hole; 603. Lifting block; 604. Second spring; 605. Support platform; 606. Compensation hole; 7. Working chamber; 8. First oil storage chamber; 9. Throttling component; 901. Slide rod; 902. Limiting block; 903. Third spring; 904. Second valve plate; 905. Third valve plate; 906. First throttling orifice; 907. Second throttling orifice; 10. Second connecting seat; 11. Second oil storage chamber. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0018] Example 1: Please refer to Figure 1-10This invention provides a technical solution: an integrally molded improved shock absorber cylinder body, comprising: an outer cylinder 1, and a piston assembly 2. The piston assembly 2 is located inside a working chamber 7, which is located inside the outer cylinder 1. The working chamber 7 and the outer cylinder 1 are an integral structure. The piston assembly 2 is disposed inside the working chamber 7 and is connected to a piston rod 5. The piston assembly 2 is used to dampen the piston rod 5. A return spring 3 is fitted outside the piston rod 5. A first connecting seat 4 is fixedly installed at one top end of the piston rod 5. A compensation device is installed at one top end of the working chamber 7. Component 6, the compensation component 6 is used to reduce cavitation inside the working chamber 7. The working chamber 7 and the inner wall of the outer cylinder 1 are provided with a first oil storage chamber 8 and a second oil storage chamber 11. The top of the working chamber 7 is connected to the second oil storage chamber 11 through the compensation component 6. A throttling component 9 is provided at one end of the bottom of the working chamber 7. The throttling component 9 is used to control the flow rate of the medium inside the working chamber 7 to the second oil storage chamber 11 and the first oil storage chamber 8. The bottom of the working chamber 7 is provided with a slot that is connected to the second oil storage chamber 11 and the first oil storage chamber 8. A second connecting seat 10 is installed at the bottom of the outer cylinder 1.

[0019] This embodiment integrates the outer cylinder 1 and the working chamber 7 into one piece, eliminating the need for welding seams and eradicating the risk of oil leakage caused by weld fatigue. The piston assembly 2 has a built-in speed-sensitive damping structure that automatically reduces the flow area when the piston descends at high speed, causing a sharp increase in damping force to form a "liquid cushion" that prevents the piston from continuing to thrust and completely eliminates the abnormal noise of bottoming out. The top of the working chamber 7 is equipped with a compensation component 6. When the upper chamber experiences a momentary negative pressure due to the piston's rapid upward movement, the oil in the second oil storage chamber 11 is promptly replenished to quickly fill the negative pressure area, blocking the generation of cavitation bubbles and avoiding sudden damping changes. The bottom throttling component 9 uses a bidirectional variable damping channel. During the compression stroke, it provides sufficient back pressure to support the piston, and during the recovery stroke, it quickly returns oil, allowing the piston to maintain stable buffering and rapid reset even under extreme road conditions. This simultaneously solves the two major problems of bottoming out and cavitation within the same cylinder, significantly extending the sealing life and improving driving comfort.

[0020] Example 2: Please refer to Figure 1-10This invention provides a technical solution: A piston assembly 2 includes a top cover 201. The bottom of the top cover 201 is connected to a piston shell 208 by bolts. A gasket 202 is provided between the piston shell 208 and the top cover 201. A rotating seat 203 is provided inside the piston shell 208. The rotating seat 203 is fixedly connected to the inside of the piston shell 208 by screws. A gear 206 is provided inside the rotating seat 203. The top of the gear 206 is slidably connected to a centrifugal block 204. Support springs 205 are provided on both sides of the centrifugal block 204. A protruding structure is provided on the inner wall of the rotating seat 203. The centrifugal block 204 engages with the protruding structure on the inner wall of the rotating seat 203 through a sliding fit. Four protruding structures are evenly spaced on the inner wall of the rotating seat 203. The outer wall of the gear 206 is tightly fitted to the inner wall of the piston shell 208. A flow groove 207 is provided on the surface of the gear 206. The top of the piston shell 208... The piston housing 208 has an upper guide hole 209 and a lower guide hole 210 at its bottom. Both the upper guide hole 209 and the lower guide hole 210 are connected to a connecting hole 211. There are two connecting holes 211, which are opened on the inner wall of the piston housing 208. The piston housing 208 also has two vertical holes 212 inside, which penetrate the bottom and top of the piston housing 208. The top cover 201 has a groove on its surface that corresponds to the vertical holes 212. A guide rod 215 is fixedly connected to the bottom of the piston housing 208. The outer wall of the guide rod 215 has two protruding structures and is slidably connected to a first valve plate 213. The first valve plate 213 has a through hole inside and its bottom is in contact with the bottom surface of the piston housing. A first spring 214 is installed at the bottom of the first valve plate 213 and is fitted onto the outside of the guide rod 215. The throttling assembly 9 includes a slide rod 901, which is slidably connected to the bottom of the working chamber 7. A limit block 902 is fixedly installed at one top end of the slide rod 901. A third spring 903 is fitted outside the slide rod 901. A second valve plate 904 is provided at the bottom of the third spring 903. A third valve plate 905 is provided at the bottom of the second valve plate 904. Both the second valve plate 904 and the third valve plate 905 are fitted outside the slide rod 901. A first throttling hole 906 and a second throttling hole 907 are provided between the second valve plate 904 and the third valve plate 905. In this embodiment, when the cylinder is in use, the piston rod 5 is subjected to force, causing the piston assembly 2 to move downwards, thereby squeezing the oil inside the working chamber 7 below the piston assembly 2. Under pressure, the oil inside the working chamber 7 flows upwards through the piston assembly 2 into the working chamber 7 above the piston assembly 2. Simultaneously, the oil at the bottom of the working chamber 7 enters the first throttling orifice 906, pushing the third valve plate 905 downwards, allowing it to open. This allows the oil inside the working chamber 7 to enter the first oil storage chamber 8 and the second oil storage chamber 11 through the slot at the bottom of the working chamber 7. The oil inside the working chamber 7 acts as a throttling device when passing through the piston assembly 2 and the throttling assembly 9, thereby inhibiting the flow of oil inside the working chamber 7 and thus inhibiting the movement of the piston rod 5, achieving a shock absorption effect. When the piston assembly 2 moves downwards, the oil inside the working chamber 7 enters through the lower guide hole 210 and the connecting hole 211. The oil flows into the piston housing 208 and then out through the connecting hole 211 and the upper guide hole 209 to the working chamber 7 above the piston assembly 2. During the flow of oil inside the piston assembly 2, the oil body pushes the gear 206 inside the piston housing 208 to rotate. When the piston rod 5 moves too fast, the gear 206 will accelerate its rotation. At the same time, the rotation of the gear 206 can drive the centrifugal block 204 to rotate. Under the action of centrifugal force, the centrifugal block 204 can slide outward, so that one end of the centrifugal block 204 can engage with the protruding structure on the inner wall of the rotating seat 203, thereby preventing the gear 206 from rotating. As a result, the oil can only flow through the flow groove 207 on the surface of the gear 206, which greatly reduces the flow surface of the oil inside the piston housing 208, thereby increasing the damping support effect, increasing the resistance to piston movement, reducing the moving speed of the piston rod 5, and preventing the piston rod 5 from moving too fast and causing the piston assembly 2 to hit the bottom and cause damage.

[0021] During the return stroke of piston rod 5, the oil inside the first oil reservoir 8 and the second oil reservoir 11 will pass through the groove on the surface of the third valve plate 905, enter the second throttle hole 907, push open the second valve plate 904, and return to the working chamber 7. At the same time, the oil above piston assembly 2 can enter the vertical hole 212, push open the first valve plate 213, and then return to the working chamber 7 below piston assembly 2, so that piston assembly 2 can quickly reset.

[0022] Example 3: Please refer to Figure 1-10This invention provides a technical solution: the compensation component 6 includes two adjusting bolts 601, which are threadedly connected to the outer wall of the outer cylinder 1. One end of each adjusting bolt 601 has a rounded structure. Two adjusting holes 602 are provided on the outer wall of the working cavity 7, aligned with one end of each adjusting bolt 601. The surface of each adjusting hole 602 has a rounded concave structure and communicates with the interior of the working cavity 7. A support platform 605 is provided at one end of the top of the working cavity 7. The support platform 605 is an integral structure with the interior of the working chamber 7. It has a ring-shaped structure and there is a gap between the inner wall of the support platform 605 and the outer wall of the piston rod 5. A second spring 604 is set on the top of the support platform 605. A lifting block 603 is set on the top of the second spring 604. The lifting block 603 has a hollow structure inside and an open bottom. The outer wall of the lifting block 603 has a slot that communicates with the interior. The slot on the outer wall of the lifting block 603 is aligned with the compensation hole 606 through a sliding fit. The compensation hole 606 is opened on the surface of the working chamber 7.

[0023] In this embodiment, when the piston rod 5 moves too fast, the oil inside the working chamber 7 below the piston assembly 2 cannot enter the working chamber 7 above the piston assembly 2 in time, resulting in a negative pressure in the working chamber 7 above the piston assembly 2. The oil in the working chamber 7 above the piston assembly 2 boils and generates bubbles due to the negative pressure being lower than the saturated vapor pressure, causing a change in the damping effect. To avoid cavitation, this solution provides an adjustment hole 602 at the top of the working chamber 7, which communicates with the second oil storage chamber 11. Simultaneously, by controlling the gap between the adjustment bolt 601 and the adjustment hole 602, the flow rate inside the adjustment hole 602 can be controlled. When a negative pressure occurs in the working chamber 7 above the piston assembly 2... When pressure is applied, the oil inside the second oil storage chamber 11 can compensate for the working chamber 7 above the piston assembly 2, preventing the oil in the upper working chamber 7 from boiling bubbles due to negative pressure. When the adjustment hole 602 is insufficient to compensate, when negative pressure is generated in the working chamber 7 above the piston assembly 2, it will drive the lifting block 603 to move downward and compress the second spring 604, so that the groove on the surface of the lifting block 603 can be aligned with the compensation hole 606, thereby allowing the oil inside the second oil storage chamber 11 to enter the lifting block 603 through the compensation hole 606, and then enter the working chamber 7 above the piston assembly 2 to compensate for the oil in the working chamber 7 above the piston assembly 2, preventing cavitation caused by negative pressure.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0025] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A one-piece molded improved shock absorber cylinder body, comprising: The outer cylinder (1) is characterized in that it further includes a piston assembly (2), the piston assembly (2) being located inside the working chamber (7), the working chamber (7) being located inside the outer cylinder (1), the working chamber (7) and the outer cylinder (1) being an integral structure, the piston assembly (2) being provided inside the working chamber (7), the piston assembly (2) being connected to the piston rod (5), the piston assembly (2) being used to dampen the piston rod (5), the piston rod (5) being fitted with a return spring (3), the piston rod (5) being fixedly installed with a first connecting seat (4) at one end of the top of the piston rod (5), and a compensation assembly (6) being installed at one end of the top of the working chamber (7). The working chamber (7) is used to reduce cavitation inside. A first oil storage chamber (8) and a second oil storage chamber (11) are provided between the working chamber (7) and the inner wall of the outer cylinder (1). The top of the working chamber (7) is connected to the second oil storage chamber (11) through a compensation component (6). A throttling component (9) is provided at one end of the bottom of the working chamber (7). The throttling component (9) is used to control the flow rate of the medium inside the working chamber (7) to the second oil storage chamber (11) and the first oil storage chamber (8). A slot is provided at the bottom of the working chamber (7) to connect the second oil storage chamber (11) and the first oil storage chamber (8). A second connecting seat (10) is installed at the bottom of the outer cylinder (1).

2. The improved shock absorber cylinder body with one-piece molding according to claim 1, characterized in that: The piston assembly (2) includes a top cover (201), the bottom of which is connected to the piston shell (208) by bolts. A gasket (202) is provided between the piston shell (208) and the top cover (201). A rotating seat (203) is provided inside the piston shell (208). The rotating seat (203) is fixedly connected to the inside of the piston shell (208) by screws. A gear (206) is provided inside the rotating seat (203). The top of the gear (206) is slidably connected to the centrifugal block (204). Support springs (205) are provided on both sides of the centrifugal block (204).

3. The improved shock absorber cylinder body with one-piece molding according to claim 2, characterized in that: The inner wall of the rotating seat (203) is provided with a protruding structure. The centrifugal block (204) is engaged with the protruding structure of the inner wall of the rotating seat (203) through sliding fit. There are four protruding structures of the inner wall of the rotating seat (203) distributed at equal intervals. The outer wall of the gear (206) is tightly fitted with the inner wall of the piston shell (208). The surface of the gear (206) is provided with a flow groove (207).

4. The improved shock absorber cylinder body with one-piece molding according to claim 3, characterized in that: The piston housing (208) has an upper guide hole (209) at the top and a lower guide hole (210) at the bottom. Both the upper guide hole (209) and the lower guide hole (210) are connected to a connecting hole (211). There are two connecting holes (211), which are opened on the inner wall of the piston housing (208). There are also two vertical holes (212) inside the piston housing (208). The vertical holes (212) penetrate the bottom and top of the piston housing (208). The top cover (201) has a groove on its surface that corresponds to the vertical holes (212).

5. The improved shock absorber cylinder body with one-piece molding according to claim 4, characterized in that: The piston housing (208) is fixedly connected to a guide rod (215) at the bottom. The guide rod (215) has two protruding structures on its outer wall and is slidably connected to a first valve plate (213). The first valve plate (213) has a through hole inside and its bottom is in contact with the bottom surface of the piston housing. A first spring (214) is provided at the bottom of the first valve plate (213) and is fitted on the outside of the guide rod (215).

6. The improved shock absorber cylinder body with one-piece molding according to claim 5, characterized in that: The compensation component (6) includes two adjusting bolts (601). The two adjusting bolts (601) are threaded to the outer wall of the outer cylinder (1). One end of the adjusting bolt (601) has a smooth structure. The outer wall of the working cavity (7) is provided with two adjusting holes (602). The adjusting holes (602) are aligned with one end of the adjusting bolts (601). The surface of the adjusting holes (602) has a smooth concave structure. The adjusting holes (602) are connected to the inside of the working cavity (7).

7. The improved shock absorber cylinder body with one-piece molding according to claim 6, characterized in that: A support platform (605) is provided at one end of the top of the working chamber (7). The support platform (605) and the interior of the working chamber (7) are an integral structure. The support platform (605) has a ring-shaped structure. There is a gap between the inner wall of the support platform (605) and the outer wall of the piston rod (5). A second spring (604) is provided at the top of the support platform (605). A lifting block (603) is provided at the top of the second spring (604). The lifting block (603) has a hollow structure inside. The bottom of the lifting block (603) is open. The outer wall of the lifting block (603) is provided with a slot that communicates with the interior. The slot on the outer wall of the lifting block (603) is aligned with the compensation hole (606) through a sliding fit. The compensation hole (606) is opened on the surface of the working chamber (7).

8. The improved shock absorber cylinder body with one-piece molding according to claim 7, characterized in that: The throttling assembly (9) includes a slide rod (901), which is slidably connected to the bottom of the working chamber (7). A limit block (902) is fixedly installed at one end of the top of the slide rod (901). A third spring (903) is fitted on the outside of the slide rod (901). A second valve plate (904) is provided at the bottom of the third spring (903). A third valve plate (905) is provided at the bottom of the second valve plate (904). The second valve plate (904) and the third valve plate (905) are both fitted on the outside of the slide rod (901). A first throttling hole (906) and a second throttling hole (907) are provided between the second valve plate (904) and the third valve plate (905).

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