Built-in valve shock absorber assembly

Abstract

The invention relates to a built-in valve shock absorber assembly which comprises an air spring and a shock absorber assembly body, the shock absorber assembly body comprises a piston cylinder and a piston rod, the air spring comprises a top cover arranged at the top end of the piston rod in a sleeving mode and a rolling piston arranged on the piston cylinder in a sleeving mode, and the rolling piston is connected with the top cover through a capsule. A gap exists between the inner wall of the rolling piston and the outer wall of the piston cylinder, an air inlet valve assembly and an exhaust valve assembly which are communicated with the interior of the rolling piston are installed on the two sides of the bottom of the rolling piston respectively, and the shock absorber assembly is slidably sleeved with a sliding sleeve capable of opening and closing the air inlet valve assembly and the exhaust valve assembly. The bottom of the sliding sleeve is located in a gap between the rolling piston and the piston barrel, a first spring which is arranged on the piston barrel in a sleeving mode and is in a semi-compressed state is arranged between the bottom of the sliding sleeve and the inner bottom face of the rolling piston, and a buffer block which is fixedly arranged on the piston rod in a sleeving mode is arranged between the top of the sliding sleeve and the top cover. The service life of the built-in valve shock absorber assembly can be prolonged.

Description

Technical Field

[0001] The invention belongs to the technical field of shock absorbers, and in particular relates to a shock absorber assembly with a built-in valve. Background Art

[0002] At present, some existing built-in valve shock absorber assemblies include an air spring and a shock absorber assembly. During use, when the air spring is compressed or stretched, a movable part that can move up and down is provided in the air spring to realize the intake and exhaust operations of the built-in valve shock absorber assembly so as to restore the air spring to a standard height. However, the existing movable parts are prone to damage during long-term use, which will affect the service life of the built-in valve shock absorber assembly. Therefore, there are still shortcomings and deficiencies in the existing technology. Summary of the Invention

[0003] The purpose of the present invention is to provide a built-in valve shock absorber assembly to solve the problems raised in the above background technology.

[0004] In order to solve the above problems, the technical solution adopted by the present invention is as follows: The air filter press has a plurality of air intakes and an exhaust valve, and the exhaust valve is connected to the exhaust valve, and the exhaust valve is connected to the exhaust valve.

[0005] Furthermore, a receiving groove is coaxially provided on the bottom surface of the sliding sleeve, and the bottom surface of the sliding sleeve on the side close to the intake valve assembly is higher than the bottom surface of the other side of the sliding sleeve, and the top of the first spring is located in the receiving groove.

[0006] Furthermore, the intake valve assembly is obliquely arranged on the rolling piston, and the intake valve assembly includes an intake channel obliquely opened on the rolling piston and connected to the rolling piston, an air nozzle is coaxially installed at one end of the intake channel away from the rolling piston, and an intake valve reset rod is coaxially slidably connected to the other end of the intake channel, an intake valve elastic part in a semi-compressed state is coaxially installed between the end of the intake valve reset rod close to the air nozzle and the air nozzle, a first universal ball steel ball is installed at the other end of the intake valve reset rod, and an intake valve sealing plug is also mounted on the intake valve reset rod, the intake valve sealing plug is a conical structure adapted to the inner wall of the intake channel, and the diameter of the end of the intake valve sealing plug away from the rolling piston is larger than the diameter of the other end of the intake valve sealing plug.

[0007] Furthermore, the exhaust valve assembly is obliquely arranged on the rolling piston, and the exhaust valve assembly includes an exhaust channel obliquely opened on the rolling piston and connected to the rolling piston, an exhaust valve body is coaxially installed on one end of the exhaust channel away from the rolling piston, an exhaust valve body is slidably connected in the exhaust valve body, an exhaust valve reset rod is installed in a compressed exhaust valve elastic member between the end of the exhaust valve reset rod away from the rolling piston and the exhaust valve body, the other end of the exhaust valve reset rod slides through the exhaust channel and is installed with a second universal ball steel ball that abuts against the bottom of the sliding sleeve, and an exhaust valve sealing plug is also mounted on the exhaust valve reset rod, the exhaust valve sealing plug is a conical structure adapted to the inner wall of the exhaust valve body, and the diameter of the exhaust valve sealing plug at one end away from the rolling piston is smaller than the diameter of the other end of the exhaust valve sealing plug.

[0008] Furthermore, a breathable dust cover is installed at one end of the exhaust passage away from the rolling piston.

[0009] Furthermore, a guide pressure cover which is sleeved on the sliding sleeve is fixedly mounted on the top surface of the rolling piston, and the guide pressure cover is slidably connected to the sliding sleeve.

[0010] Furthermore, a tray capable of supporting the rolling piston is mounted on the bottom of the piston cylinder, and a shock absorber sealing ring is installed between the piston cylinder and the bottom end of the rolling piston.

[0011] Furthermore, a piston rod O-ring is installed between the top of the piston rod and the top cover.

[0012] By adopting the above technical solution, the present invention has the following beneficial effects: When the present invention is in use, the sliding sleeve is used as a movable part, that is, the air intake and exhaust operations of the built-in valve shock absorber assembly can be realized by raising and lowering the sliding sleeve. By arranging a buffer block between the top of the sliding sleeve and the top cover, and arranging a first spring between the bottom of the sliding sleeve and the inner bottom surface of the rolling piston, the sliding sleeve can be elastically movable during the raising and lowering process and is not easily damaged, thereby increasing the service life of the sliding sleeve and thus the service life of the built-in valve shock absorber assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention in an initial state; Figure 2 for Figure 1 One of the structural diagrams of the middle part of the device; Figure 3 for Figure 1 The second structural diagram of the middle part of the device.

[0014] Figure numerals: 1, top cover; 2, first pressure ring; 3, buffer block; 4, capsule; 5, sliding sleeve; 6, guide pressure cover; 7, rolling piston; 8, first spring; 9, intake valve assembly; 10, shock absorber sealing ring; 11, lower bushing assembly; 12, shock absorber assembly; 13, tray; 14, exhaust valve assembly; 15, second pressure ring; 16, piston rod; 17, piston rod O-ring; 18, upper bushing assembly; 19, air nozzle; 20, intake valve O , 21. Gas nozzle locating sleeve; 22. Inlet valve elastic part; 23. Inlet valve reset rod; 24. Inlet valve sealing plug; 25. Inlet valve sliding bearing; 26. Exhaust valve reset rod; 27. Exhaust valve sliding bearing; 28. Exhaust valve sealing plug; 29. ​​Exhaust valve O-ring; 30. Exhaust valve elastic part; 31. Exhaust valve body; 32. Breathable dust cover; 33. Piston cylinder; 34. Second universal ball; 35. First universal ball. DETAILED DESCRIPTION

[0015] In order to make the objectives, technical solutions and beneficial effects of the present invention more clear, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

[0016] like Figures 1 to 3As shown, the present invention provides a built-in valve shock absorber assembly, including an air spring and a shock absorber assembly 12, the shock absorber assembly 12 includes a vertically distributed piston cylinder 33 and a piston rod 16, specifically, the piston rod 16 can slide relative to the piston cylinder 33, and the top end of the piston rod 16 is a movable end; in addition, a lower bushing assembly 11 is fixedly connected to the bottom end of the piston cylinder 33, and an upper bushing assembly 18 is connected to the top end of the piston rod 16; the air spring includes a top cover 1 mounted on the top end of the piston rod 16 and a rolling piston 7 mounted on the piston cylinder 33, the rolling piston 7 and the top cover 1 are connected by a capsule 4, specifically, the capsule 4 is an elastomeric structure, during assembly, the top end of the capsule 4 is mounted outside the top cover 1, and the capsule 4 is assembled and connected to the top cover 1 through a first pressure ring 2; and the bottom end of the capsule 4 is mounted on the top of the rolling piston 7, and the capsule 4 It is assembled and connected with the rolling piston 7 through the second pressure ring 15, so that the capsule 4, the top cover 1 and the rolling piston 7 can form a sealed container together; in addition, the bottom of the piston cylinder 33 is provided with a tray 13 that can support the rolling piston 7, and a shock absorber sealing ring 10 is installed between the piston cylinder 33 and the bottom end of the rolling piston 7; specifically, a bottom ring that is adapted to the outer wall of the piston cylinder 33 is fixedly connected to the bottom end of the rolling piston 7, and the tray 13 supports the bottom ring; and the shock absorber sealing ring 10 is installed in the bottom ring, and the shock absorber sealing ring 10 can ensure the sealing of the piston cylinder 33 and the rolling piston 7 at the connection position; a piston rod O-ring 17 is installed between the top of the piston rod 16 and the top cover 1, and the piston rod O-ring 17 can ensure the sealing between the piston rod 16 and the top cover 1 at the connection position. The above-mentioned setting method can refer to the structural composition of the built-in valve shock absorber in the prior art.

[0017] There is a gap between the inner wall of the rolling piston 7 and the outer wall of the piston cylinder 33, and the intake valve assembly 9 and the exhaust valve assembly 14 connected to the rolling piston 7 are respectively installed on both sides of the bottom of the rolling piston 7. The sliding sleeve on the shock absorber assembly 12 is provided with a sliding sleeve 5 that can open and close the intake valve assembly 9 and the exhaust valve assembly 14. The bottom of the sliding sleeve 5 is located in the gap between the rolling piston 7 and the piston cylinder 33, and there is a gap between the outer wall of the sliding sleeve 5 and the inner wall of the rolling piston 7; and a sleeve is provided between the bottom of the sliding sleeve 5 and the inner bottom surface of the rolling piston 7, which is sleeved on the piston cylinder 33 and is in a semi-compressed state. The first spring 8 below, a buffer block 3 fixedly mounted on the piston rod 16 is provided between the top of the sliding sleeve 5 and the top cover 1, and the buffer block 3 can be made of rubber material; specifically, in the initial state, that is, when the capsule 4 of the air spring is at the standard working height, the two ends of the buffer block 3 are respectively against the sliding sleeve 5 and the top cover 1. At this time, the intake valve assembly 9 and the exhaust valve assembly 14 are both in the closed state; and in use, when the sliding sleeve 5 is in the process of descending, the intake valve assembly 9 can be gradually opened for inflation; when the sliding sleeve 5 is in the process of ascending, the exhaust valve assembly 14 can be gradually opened for exhaust.

[0018] Specifically, during use, when the capsule 4 of the air spring is compressed below the standard height, the top cover 1 and the buffer block 3 descend, and then under the action of the buffer block 3, the sleeve 5 can descend and compress the first spring 8. During the descent of the sleeve 5, the air intake valve assembly 9 can be gradually opened to inflate the sealed container so that the capsule 4 of the air spring is restored to the standard working height. During the inflation process, under the action of the rebound of the first spring 8, the sleeve 5 can gradually rise to the initial state to gradually close the air intake valve assembly 9.

[0019] When the capsule 4 of the air spring is stretched above the standard height, the top cover 1 and the buffer block 3 rise, and then the sliding sleeve 5 can rise under the action of the rebound of the first spring 8. During the rising process, the sliding sleeve 5 can gradually open the exhaust valve assembly 14 to exhaust the air in the sealed container so that the capsule 4 of the air spring can be restored to the standard working height. During the exhaust process, the sliding sleeve 5 can gradually descend to the initial state to gradually close the exhaust valve assembly 14.

[0020] In general, when the present invention is in use, the sliding sleeve 5 is used as the movable part, that is, the air intake and exhaust operations of the built-in valve shock absorber assembly can be realized by raising and lowering the sliding sleeve 5. By arranging a buffer block 3 between the top of the sliding sleeve 5 and the top cover 1, and arranging a first spring 8 between the bottom of the sliding sleeve 5 and the inner bottom surface of the rolling piston 7, the sliding sleeve 5 can be elastically movable during the raising and lowering process and is not easily damaged, thereby improving the service life of the sliding sleeve 5 and thus improving the service life of the built-in valve shock absorber assembly.

[0021] The specific structure of the sliding sleeve 5 is as follows: Figure 1 As shown, a receiving groove is coaxially defined on the bottom surface of the sliding sleeve 5, and the bottom surface of the sliding sleeve 5 on the side closest to the intake valve assembly 9 is higher than the bottom surface of the other side of the sliding sleeve 5. The top of the first spring 8 is located in the receiving groove. Specifically, in the initial state, the higher side of the bottom surface of the sliding sleeve 5 is located above the connection point between the intake valve assembly 9 and the rolling piston 7. At this time, the intake valve assembly 9 is in a closed state. The lower side of the bottom surface of the sliding sleeve 5 contacts the connection point between the exhaust valve assembly 14 and the rolling piston 7. At this time, the exhaust valve assembly 14 is in a closed state under the action of the sliding sleeve 5. In this way, when the sliding sleeve 5 gradually descends from the initial position, that is, when the intake valve assembly 9 is gradually opened, the exhaust valve assembly 14 and the sliding sleeve 5 can always contact each other to maintain the closed state. When the exhaust valve assembly 14 is gradually opened, that is, when the sliding sleeve 5 gradually rises from the initial position, the sliding sleeve 5 will move further and further away from the intake valve assembly 9, so that the intake valve assembly 9 can always remain in a closed state to prevent the intake and exhaust from affecting each other.

[0022] The specific arrangement of the intake valve assembly 9 is as follows: Figure 1 and Figure 2As shown, the intake valve assembly 9 is tiltedly arranged on the rolling piston 7. Specifically, the lower side of the intake valve assembly 9 is away from the outer wall of the rolling piston 7; the intake valve assembly 9 includes an intake channel obliquely opened on the rolling piston 7 and connected to the rolling piston 7, and an air nozzle 19 is coaxially installed at one end of the intake channel away from the rolling piston 7, and the air nozzle 19 is a air nozzle joint; specifically, an air nozzle positioning sleeve 21 is fixed in the intake channel, and an intake valve O-ring 20 is installed between the air nozzle positioning sleeve 21 and the inner wall of the intake channel, and the air nozzle 19 and the air nozzle positioning sleeve 21 are threadedly connected, which makes it easy to disassemble and assemble the air nozzle 19. When in use, the air source can be connected by installing a ventilation pipe on the air nozzle 19.

[0023] The other end of the intake channel is coaxially connected to an intake valve reset rod 23 for sliding movement. The intake valve reset rod 23 is an integrated structure, which makes it easy to install the intake valve reset rod 23 in the intake channel and ensures that the intake valve reset rod 23 has a certain strength and stability; the intake valve reset rod 23 is slidably connected to the intake channel through an intake valve sliding bearing 25 installed in the intake channel; an intake valve elastic member 22 in a semi-compressed state is coaxially installed between the end of the intake valve reset rod 23 close to the air nozzle 19 and the air nozzle 19, and the intake valve elastic member 22 can be set as a second spring; the other end of the intake valve reset rod 23 is installed with a first universal ball steel ball 35, and the intake valve reset rod 23 is also provided with an intake valve sealing plug 24, which is a conical structure adapted to the inner wall of the intake channel, and the diameter of the end of the intake valve sealing plug 24 away from the rolling piston 7 is larger than the diameter of the other end of the intake valve sealing plug 24.

[0024] Specifically, in the initial state, the higher side of the bottom surface of the sliding sleeve 5 is located above the communication position between the intake valve assembly 9 and the rolling piston 7. At this time, under the action of the intake valve elastic member 22, the intake valve sealing plug 24 can be tightly attached to the closed intake channel, so that the intake valve assembly 9 is in a closed state; and in use, when the sliding sleeve 5 is in the process of descending, the outer wall of the sliding sleeve 5 can be abutted against the first universal ball 35, and then relative movement can be generated between the sliding sleeve 5 and the first universal ball 35, that is, the sliding sleeve 5 can be gradually moved into the intake channel. Gradually push the first universal ball 35 to drive the intake valve reset rod 23 to move outward and compress the intake valve elastic member 22. During the outward movement of the intake valve reset rod 23, the intake valve sealing plug 24 can be simultaneously driven to move outward to open the intake passage. At this time, air can be inflated into the sealed container through the intake valve assembly 9. Then, during the inflation process, when the sliding sleeve 5 gradually rises to the initial state, the intake valve elastic member 22 rebounds, causing the intake valve assembly 9 to gradually return to the closed state.

[0025] The specific configuration of the exhaust valve assembly 14 is as follows: Figure 1 and Figure 3As shown, the exhaust valve assembly 14 is tiltedly arranged on the rolling piston 7. Specifically, the lower side of the exhaust valve assembly 14 is away from the outer wall of the rolling piston 7. The exhaust valve assembly 14 includes an exhaust channel tiltedly opened on the rolling piston 7 and connected to the rolling piston 7. An exhaust valve body 31 is coaxially installed at one end of the exhaust channel away from the rolling piston 7. The exhaust valve body 31 is fixed in the exhaust channel, and an exhaust valve O-ring 29 is installed between the exhaust valve body 31 and the inner wall of the exhaust channel. An exhaust valve reset rod 26 is slidably connected to the exhaust valve body 31. The exhaust valve reset rod 26 is an integrated structure, which can facilitate the installation of the exhaust valve reset rod 26 in the exhaust channel and ensure that the exhaust valve reset rod 26 has a certain strength and stability.

[0026] An exhaust valve elastic member 30 in a compressed state is installed between the end of the exhaust valve reset rod 26 away from the rolling piston 7 and the exhaust valve body 31, and the exhaust valve elastic member 30 can be set as a third spring; the other end of the exhaust valve reset rod 26 slides through the exhaust channel and is installed with a second universal ball steel ball 34 that abuts against the bottom of the sliding sleeve 5, and the exhaust valve reset rod 26 is slidably connected to the exhaust channel through an exhaust valve sliding bearing 27 installed in the exhaust channel; and an exhaust valve sealing plug 28 is also mounted on the exhaust valve reset rod 26. The exhaust valve sealing plug 28 is a conical structure adapted to the inner wall of the exhaust valve body 31, and the diameter of the exhaust valve sealing plug 28 at one end away from the rolling piston 7 is smaller than the diameter of the other end of the exhaust valve sealing plug 28.

[0027] Specifically, in the initial state, the second universal ball 34 is against the outer wall of the lower side of the bottom surface of the sleeve 5. At this time, under the action of the sleeve 5, the exhaust valve elastic member 30 can be compressed, and the exhaust valve sealing plug 28 can be tightly attached to the closed exhaust channel, so that the exhaust valve assembly 14 is in a closed state; and in use, when the sleeve 5 is in the process of rising, the outer wall of the sleeve 5 can gradually move away from the second universal ball 34. At this time, under the action of the rebound of the exhaust valve elastic member 30, the second universal ball 34 can be gradually pushed to move into the rolling piston 7 to drive the exhaust valve The reset rod 26 moves inward, and during the inward movement of the exhaust valve reset rod 26, the exhaust valve sealing plug 28 can be simultaneously driven to move inward to open the exhaust channel. At this time, exhaust can be carried out through the exhaust valve assembly 14; then during the exhaust process, when the sliding sleeve 5 gradually descends to the initial state, the outer wall of the sliding sleeve 5 will be against the second universal ball steel ball 34, and then relative movement can be generated between the sliding sleeve 5 and the second universal ball steel ball 34, that is, the sliding sleeve 5 can gradually push the second universal ball steel ball 34 into the exhaust channel until the exhaust valve assembly 14 is gradually restored to the closed state.

[0028] Since the higher side of the bottom surface of the sleeve 5 is always located above the communication position between the intake valve assembly 9 and the rolling piston 7 during the process of opening and closing the exhaust valve assembly 14, the intake valve assembly 9 can always remain in a closed state; similarly, since the second universal ball 34 can always abut against the outer wall of the lower side of the bottom surface of the sleeve 5 during the process of opening and closing the intake valve assembly 9, the exhaust valve assembly 14 can always remain in a closed state.

[0029] Further, such as Figure 3 As shown, a breathable dust cover 32 is installed at one end of the exhaust channel away from the rolling piston 7. Specifically, the breathable dust cover 32 can prevent a large amount of dust from entering the exhaust channel while ensuring that the exhaust channel can be exhausted normally.

[0030] Further, such as Figure 1 As shown, a guide pressure cover 6 is fixedly mounted on the top surface of the rolling piston 7 and is sleeved on the sliding sleeve 5. The guide pressure cover 6 and the sliding sleeve 5 are in sliding connection. Specifically, the guide pressure cover 6 is a stepped cylindrical structure, and the top diameter of the guide pressure cover 6 is smaller than the bottom diameter of the guide pressure cover 6. In addition, since the guide pressure cover 6 and the sliding sleeve 5 are in sliding connection, that is, there is a gap between the inner wall of the top of the guide pressure cover 6 and the outer wall of the sliding sleeve 5, this does not affect the air intake and exhaust of the capsule 4. During use, the guide pressure cover 6 can guide the sliding sleeve 5 during the lifting and lowering of the sliding sleeve 5, so as to improve the stability of the sliding sleeve 5 during the lifting and lowering process.

[0031] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications are possible without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the claimed invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A damper assembly with an internal valve, comprising an air spring and a damper assembly, wherein the damper assembly comprises a vertically arranged piston cylinder and a piston rod, the air spring comprising a top cover mounted on the top end of the piston rod and a rolling piston mounted on the piston cylinder, the rolling piston and the top cover being connected via a capsule, characterized in that: There is a gap between the inner wall of the rolling piston and the outer wall of the piston cylinder, and an intake valve assembly and an exhaust valve assembly connected to the rolling piston are respectively installed on both sides of the bottom of the rolling piston. The sliding sleeve on the shock absorber assembly is provided with a sliding sleeve that can open and close the intake valve assembly and the exhaust valve assembly. The bottom of the sliding sleeve is located in the gap between the rolling piston and the piston cylinder, and a first spring is provided between the bottom of the sliding sleeve and the inner bottom surface of the rolling piston and is sleeved on the piston cylinder and is in a semi-compressed state. A buffer block fixedly sleeved on the piston rod is provided between the top of the sliding sleeve and the top cover.

2. The internal valve damper assembly according to claim 1, characterized in that: An accommodating groove is coaxially provided on the bottom surface of the sliding sleeve, and the bottom surface of the sliding sleeve on one side close to the intake valve assembly is higher than the bottom surface of the other side of the sliding sleeve, and the top of the first spring is located in the accommodating groove.

3. The internal valve damper assembly according to claim 2, characterized in that: The intake valve assembly is tiltedly arranged on the rolling piston, and the intake valve assembly includes an intake channel that is tiltedly opened on the rolling piston and connected to the rolling piston. An air nozzle is coaxially installed at one end of the intake channel away from the rolling piston, and an intake valve reset rod is coaxially slidably connected to the other end of the intake channel. An intake valve elastic part in a semi-compressed state is coaxially installed between the end of the intake valve reset rod close to the air nozzle and the air nozzle, a first universal ball steel ball is installed at the other end of the intake valve reset rod, and an intake valve sealing plug is also mounted on the intake valve reset rod. The intake valve sealing plug is a conical structure that is adapted to the inner wall of the intake channel, and the diameter of the end of the intake valve sealing plug away from the rolling piston is larger than the diameter of the other end of the intake valve sealing plug.

4. The internal valve damper assembly according to claim 2 or 3, characterized in that: The exhaust valve assembly is obliquely arranged on the rolling piston, and the exhaust valve assembly includes an exhaust passage obliquely opened on the rolling piston and connected to the rolling piston, an exhaust valve body is coaxially installed on one end of the exhaust passage away from the rolling piston, an exhaust valve body is slidably connected in the exhaust valve body, an exhaust valve reset rod is installed in a compressed exhaust valve elastic member between the end of the exhaust valve reset rod away from the rolling piston and the exhaust valve body, the other end of the exhaust valve reset rod slides through the exhaust passage and is installed with a second universal ball steel ball that abuts against the bottom of the sliding sleeve, and an exhaust valve sealing plug is also mounted on the exhaust valve reset rod, the exhaust valve sealing plug is a conical structure adapted to the inner wall of the exhaust valve body, and the diameter of the exhaust valve sealing plug at one end away from the rolling piston is smaller than the diameter of the other end of the exhaust valve sealing plug.

5. The internal valve damper assembly according to claim 4, characterized in that: A breathable dust cover is installed at one end of the exhaust passage away from the rolling piston.

6. The internal valve damper assembly according to claim 1 or 2, characterized in that: A guide pressure cover sleeved on the sliding sleeve is fixedly mounted on the top surface of the rolling piston, and the guide pressure cover is slidably connected to the sliding sleeve.

7. The internal valve damper assembly according to claim 1, characterized in that: The bottom of the piston cylinder is sheathed with a tray capable of supporting the rolling piston, and a shock absorber sealing ring is installed between the piston cylinder and the bottom end of the rolling piston.

8. The internal valve damper assembly according to claim 1, characterized in that: A piston rod O-ring is installed between the top of the piston rod and the top cover.

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