Double-tonality shock absorber with sliding cylinder with high sealing performance

Abstract

The utility model relates to the field of shock absorbers, in particular to a double-adjusting shock absorber with a sliding barrel with high sealing performance, which has the characteristics of high sealing performance, stable structure and flexible damping adjustment. Comprising a mounting base, a hydraulic cylinder, a sliding cylinder, a piston rod, a piston, a first spring, a sealing cover, a first supporting base, a second supporting base, a first damping adjusting assembly, a second damping adjusting assembly and an air bag assembly, and the mounting base is provided with a first mounting groove, a second mounting groove, a third mounting groove and a fourth mounting groove; the bottom of the first installation groove is concavely provided with a groove which is coaxially distributed, a first flow channel is arranged between the first installation groove and the second installation groove, a second flow channel is arranged between the groove and the third installation groove, and a third flow channel is arranged among the second installation groove, the third installation groove and the fourth installation groove. The sealing cover is arranged at the lower end of the hydraulic cylinder and the lower end of the sliding cylinder and comprises an outer cover, a sealing piece, a sealing ring, an ejection piece and a lining.

Description

Technical Field

[0001] This utility model relates to the field of shock absorbers, and in particular to a dual-adjustable shock absorber with a sliding cylinder having high sealing performance. Background Technology

[0002] As a key component in vehicle suspension systems and various mechanical equipment, the shock absorber's main function is to suppress the oscillations during spring-absorbed shock rebound and the impact from the road surface, thereby improving driving comfort and stability. While existing dual-adjustable shock absorbers can adapt to various operating conditions through different damping adjustment components, practical use has revealed that the sealing structure between the shock absorber's slide, piston rod, and hydraulic cylinder is relatively simple. Under long-term high-frequency reciprocating motion and high-pressure environments, problems such as hydraulic oil leakage or external impurities intruding can easily occur, leading to decreased damping performance or even failure. Furthermore, the connection between the slide and internal components often lacks effective limiting and support structures, making it prone to tilting or loosening during severe vibrations, affecting the overall rigidity and service life of the shock absorber. Utility Model Content

[0003] Therefore, in view of the above problems, this utility model provides a dual-adjustable shock absorber with high sealing performance, stable structure and flexible damping adjustment.

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

[0005] A dual-adjustable shock absorber with a high-sealing-performance slide cylinder includes a mounting base, a hydraulic cylinder, a slide cylinder, a piston rod, a piston, a first spring, a sealing cap, a first support base, a second support base, a first damping adjustment assembly, a second damping adjustment assembly, and an airbag assembly. The mounting base has a first mounting groove, a second mounting groove, a third mounting groove, and a fourth mounting groove. The bottom of the first mounting groove has coaxially distributed grooves. A first flow channel is provided between the first and second mounting grooves. A second flow channel is provided between the grooves and the third mounting groove. A third flow channel is provided between the second, third, and fourth mounting grooves. The upper part of the slide cylinder is located at the groove, and the lower part of the slide cylinder has a through hole. The upper part of the hydraulic cylinder is located at the first mounting groove and is sleeved on the outside of the slide cylinder. The sealing cap is located at the lower end of the hydraulic cylinder and the slide cylinder. The piston rod slidably passes through the sealing cap. The sealing cap covers... The system includes an outer cover, a seal, a sealing ring, a top piece, and a bushing. The outer cover is locked to the lower surface of the seal. The upper surface of the seal has a recessed sealing groove. The inner edge of the sealing groove has a raised annular flange. The sealing ring is embedded in the sealing groove through the top piece. The inner edge of the sealing ring has a downwardly protruding extension. The lower surface of the sealing ring abuts against the raised annular flange. The extension is located between the raised annular flange and the piston rod. The bushing is embedded between the piston rod and the top piece. The piston is located at the inner end of the piston rod and is distributed within the slide cylinder. The first support seat is located at the outer end of the piston rod. The second support seat is located at the upper end of the hydraulic cylinder. The first spring is sleeved on the outside of the hydraulic cylinder and the piston rod, and both ends of the first spring abut against the first support seat and the second support seat, respectively. The first damping adjustment assembly and the second damping adjustment assembly are located at the second mounting groove and the third mounting groove, respectively. The airbag assembly is located at the fourth mounting groove.

[0006] Furthermore, the upper surface of the top member has an upward protrusion along its inner edge, which forms a support surface on the upper surface of the top member. The protrusion is embedded in the slide cylinder, the lower end of the slide cylinder abuts against the support surface, and the circumferential surface of the top member is attached to the inner surface of the hydraulic cylinder.

[0007] Furthermore, at least three strip-shaped grooves are uniformly recessed around the circumferential surface of the top member, and each strip-shaped groove has a notch at its lower end.

[0008] Furthermore, a second spring is fitted on the piston rod and located between the piston and the sealing cap.

[0009] Furthermore, the upper part of the mounting base is recessed with a fifth mounting groove, and a connecting part is threadedly connected to the fifth mounting groove. The connecting part is provided with a connecting hole, and a bearing is provided at the connecting hole.

[0010] By adopting the aforementioned technical solution, the beneficial effects of this utility model are as follows: This dual-adjustable shock absorber with a high-sealing-performance slide cylinder, through the setting of a composite sealing cover structure composed of an outer cover, sealing element, sealing ring, top element and bushing, utilizes the cooperation of sealing groove, annular convex edge and extension to form multiple sealing barriers. In particular, the extension of the sealing ring is distributed between the annular convex edge and the piston rod, effectively preventing hydraulic oil leakage along the piston rod and significantly improving the sealing performance of the slide cylinder area. Furthermore, the first mounting groove, second mounting groove, third mounting groove and fourth mounting groove are reasonably arranged on the mounting base, and the groove and each mounting groove are connected through the first flow channel, second flow channel and third flow channel to construct a clear hydraulic oil flow path, providing a basic fluid channel for dual-adjustable damping adjustment and ensuring the sensitivity of damping response. At the same time, the airbag assembly, dual damping adjustment assembly and spring support structure are integrated into the mounting base and hydraulic cylinder system, realizing the integration of shock absorption, buffering and damping adjustment, with a compact structure, which is conducive to improving the overall shock absorption efficiency. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the present utility model;

[0012] Figure 2 This is an exploded structural diagram of an embodiment of the present invention;

[0013] Figure 3 This is a three-dimensional structural diagram of the piston, piston rod, and sealing cap in an embodiment of this utility model;

[0014] Figure 4 This is an exploded structural diagram of the piston, piston rod, and sealing cap in an embodiment of this utility model;

[0015] Figure 5 This is a three-dimensional structural diagram of the mounting base from a first-view perspective in an embodiment of this utility model;

[0016] Figure 6 This is a three-dimensional structural diagram of the mounting base from a second perspective in an embodiment of this utility model.

[0017] Explanation of reference numerals in the attached figures:

[0018] 1. Mounting base; 2. Hydraulic cylinder; 3. Slide cylinder; 4. Piston rod; 5. Piston; 6. First spring; 7. Sealing cap; 8. First support base; 9. Second support base; 10. First damping adjustment assembly; 11. Second damping adjustment assembly; 12. Airbag assembly; 13. Second spring; 14. Connecting part; 15. Connecting hole; 16. Bearing; 17. Through hole;

[0019] 71. Outer cover; 72. Seal; 73. Sealing ring; 74. Top piece; 75. Bushing; 76. Sealing groove; 77. Annular flange; 78. Extension; 79. Protrusion; 80. Support surface; 81. Strip groove; 82. Notch;

[0020] 101. First mounting slot; 102. Second mounting slot; 103. Third mounting slot; 104. Fourth mounting slot; 105. Groove; 106. First flow channel; 107. Second flow channel; 108. Third flow channel; 109. Fifth mounting slot. Detailed Implementation

[0021] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0022] The embodiment of this utility model is as follows:

[0023] refer to Figures 1 to 6As shown, a dual-adjustable shock absorber with a high-sealing-performance slide cylinder includes a mounting base 1, a hydraulic cylinder 2, a slide cylinder 3, a piston rod 4, a piston 5, a first spring 6, a sealing cap 7, a first support base 8, a second support base 9, a first damping adjustment assembly 10, a second damping adjustment assembly 11, and an airbag assembly 12. The mounting base 1 has a first mounting groove 101, a second mounting groove 102, a third mounting groove 103, and a fourth mounting groove 104. The bottom of the first mounting groove 101 is recessed with coaxially distributed grooves 105. The first mounting groove 101 and the second mounting groove... A first flow channel 106 is provided between the groove 102 and the third mounting groove 103; a second flow channel 107 is provided between the groove 105 and the third mounting groove 103; a third flow channel 108 is provided between the second mounting groove 102, the third mounting groove 103, and the fourth mounting groove 104; the upper part of the slide cylinder 3 is located at the groove 105; the lower part of the slide cylinder 3 has a through hole 17; the upper part of the hydraulic cylinder 2 is located at the first mounting groove 101, and the hydraulic cylinder 2 is sleeved on the outside of the slide cylinder 3; the sealing cap 7 is located at the lower end of the hydraulic cylinder 2 and the slide cylinder 3; the piston rod 4 is slidably mounted on the sealing cap 7. The sealing cap 7 includes an outer cap 71, a sealing element 72, a sealing ring 73, a top element 74, and a bushing 75. The outer cap 71 is locked to the lower surface of the sealing element 72. The upper surface of the sealing element 72 is recessed with a sealing groove 76. An annular flange 77 protrudes from the inner edge of the sealing groove 76. The sealing ring 73 is embedded in the sealing groove 76 through the top element 74. An extension 78 protrudes downward from the inner edge of the sealing ring 73. The lower surface of the sealing ring 73 abuts against the annular flange 77. The extension 78 is distributed between the annular flange 77 and the piston rod 4. The bushing 75 is embedded... The piston 5 is located at the inner end of the piston rod 4 and distributed within the slide cylinder 3, between the piston rod 4 and the top member 74. The first support seat 8 is located at the outer end of the piston rod 4, and the second support seat 9 is located at the upper end of the hydraulic cylinder 2. The first spring 6 is sleeved on the outer side of the hydraulic cylinder 2 and the piston rod 4, and the two ends of the first spring 6 abut against the first support seat 8 and the second support seat 9, respectively. The first damping adjustment assembly 10 and the second damping adjustment assembly 11 are respectively located at the second mounting groove 102 and the third mounting groove 103. The airbag assembly 12 is located at the fourth mounting groove 104.

[0024] This dual-adjustable shock absorber with a high-sealing-performance slide cylinder utilizes a composite sealing cover structure consisting of an outer cover 71, a sealing element 72, a sealing ring 73, a top element 74, and a bushing 75. Through the cooperation of the sealing groove 76, the annular flange 77, and the extension 78, multiple sealing barriers are formed. In particular, the extension of the sealing ring 73, positioned between the annular flange 77 and the piston rod 4, effectively prevents hydraulic oil leakage along the piston rod, significantly improving the sealing performance of the slide cylinder area. Furthermore, the first mounting groove 101 and the second mounting groove 1 are rationally arranged on the mounting base 1. 02. The third mounting groove 103 and the fourth mounting groove 104 are connected to the groove 105 and each mounting groove through the first flow channel 106, the second flow channel 107 and the third flow channel 108, forming a clear hydraulic oil flow path. This provides a basic fluid channel for dual-adjustment damping adjustment and ensures the sensitivity of the damping response. At the same time, the airbag assembly 12, the dual damping adjustment assembly and the spring support structure are integrated into the mounting base 1 and the hydraulic cylinder system, realizing the integration of shock absorption, buffering and damping adjustment. The structure is compact and conducive to improving the overall shock absorption efficiency.

[0025] Specifically, the upper surface of the top member 74 has an upwardly protruding part 79 along its inner edge. The protruding part 79 forms a support surface 80 on the upper surface of the top member 74. The protruding part 79 is embedded in the slide cylinder 3, and the lower end of the slide cylinder 3 abuts against the support surface 80. The circumferential surface of the top member 74 is attached to the inner surface of the hydraulic cylinder 2. By setting the protruding part 79 on the upper surface of the top member 74 to form the support surface 80, and by having the lower end of the slide cylinder 3 directly abut against the support surface 80, the axial displacement of the slide cylinder 3 is effectively limited, preventing it from sinking or falling off excessively during operation. Furthermore, the circumferential surface of the top member is attached to the inner surface of the hydraulic cylinder 2. Combined with the structure of the protruding part 79 being embedded in the slide cylinder 3, it plays a good guiding role, ensuring the coaxiality between the slide cylinder 3, the piston rod 4, and the hydraulic cylinder 2, reducing uneven wear, and extending the service life of the components.

[0026] Furthermore, four strip-shaped grooves 81 are evenly recessed around the circumferential surface of the top member 74, and each strip-shaped groove 81 has a notch 82 at its lower end. The strip-shaped grooves 81 and the lower notch 82 are evenly arranged on the circumferential surface of the top member 74, forming a miniature oil storage tank and oil guiding channel. During the movement of damping oil, the frictional resistance between the top member 74 and the inner wall of the hydraulic cylinder 2 is reduced. At the same time, it helps to balance the local oil pressure around the top member 74 and avoid abnormal deformation or damage to the seal due to local high pressure.

[0027] Furthermore, a second spring 13 is sleeved on the piston rod 4 and located between the piston 5 and the sealing cover 7, forming a two-stage buffer mechanism. When the shock absorber is subjected to severe impact or is at the end of the compression stroke, the second spring 13 can provide additional elastic support to prevent the piston 5 from directly and rigidly impacting the sealing cover 7, effectively protecting the sealing assembly and internal structure.

[0028] In this embodiment, the upper part of the mounting base 1 is recessed with a fifth mounting groove 109, and a connecting part 14 is threadedly connected to the fifth mounting groove 109. The connecting part 14 is provided with a connecting hole 15, and a bearing 16 is provided at the connecting hole 15. By providing a fifth mounting groove 109 and a threaded connecting part 14 on the upper part of the mounting base 1, a standardized external interface is provided, which facilitates the quick assembly and disassembly of the shock absorber from the vehicle body or other mechanical structures. The bearing 16 at the connecting hole 15 allows the connecting part 14 to rotate or swing under force (such as when the suspension system moves) to use rolling friction instead of sliding friction, which significantly reduces wear at the connection and improves the flexibility and durability of the connection.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0032] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A dual-adjustable shock absorber with a sliding cylinder possessing high sealing performance, characterized in that: The system includes a mounting base, a hydraulic cylinder, a slide cylinder, a piston rod, a piston, a first spring, a sealing cap, a first support base, a second support base, a first damping adjustment assembly, a second damping adjustment assembly, and an airbag assembly. The mounting base has a first mounting groove, a second mounting groove, a third mounting groove, and a fourth mounting groove. The bottom of the first mounting groove has coaxially distributed grooves. A first flow channel is provided between the first and second mounting grooves. A second flow channel is provided between the grooves and the third mounting groove. A third flow channel is provided between the second, third, and fourth mounting grooves. The upper part of the slide cylinder is located at the groove, and the lower part of the slide cylinder has a through hole. The upper part of the hydraulic cylinder is located at the first mounting groove and is sleeved on the outside of the slide cylinder. The sealing cap is located at the lower end of the hydraulic cylinder and the slide cylinder. The piston rod slidably passes through the sealing cap. The sealing cap includes an outer cover, a sealing element, and a sealing mechanism. The system comprises a ring, a top piece, and a bushing. The outer cover is locked to the lower surface of the seal. The upper surface of the seal has a recessed sealing groove. The inner edge of the sealing groove has a raised annular flange. The sealing ring is embedded in the sealing groove through the top piece. The inner edge of the sealing ring has a downwardly protruding extension. The lower surface of the sealing ring abuts against the raised annular flange. The extension is located between the raised annular flange and the piston rod. The bushing is embedded between the piston rod and the top piece. The piston is located at the inner end of the piston rod and distributed within the slide cylinder. The first support seat is located at the outer end of the piston rod. The second support seat is located at the upper end of the hydraulic cylinder. The first spring is sleeved on the outer side of the hydraulic cylinder and the piston rod, and both ends of the first spring abut against the first support seat and the second support seat, respectively. The first damping adjustment assembly and the second damping adjustment assembly are located at the second mounting groove and the third mounting groove, respectively. The airbag assembly is located at the fourth mounting groove.

2. The dual-adjustable shock absorber with a high-sealing-performance slide cylinder according to claim 1, characterized in that: The upper surface of the top member has an upward protrusion along its inner edge, which forms a support surface. The protrusion is embedded in the slide cylinder, and the lower end of the slide cylinder abuts against the support surface. The circumferential surface of the top member is attached to the inner surface of the hydraulic cylinder.

3. The dual-adjustable shock absorber with a high-sealing-performance slide cylinder according to claim 2, characterized in that: At least three strip-shaped grooves are uniformly recessed around the circumference of the top member, and each strip-shaped groove has a notch at its lower end.

4. The dual-adjustable shock absorber with a high-sealing-performance slide as described in any one of claims 1 to 3, characterized in that: A second spring is fitted on the piston rod and located between the piston and the sealing cap.

5. The dual-adjustable shock absorber with a high-sealing-performance slide cylinder according to claim 4, characterized in that: The upper part of the mounting base is recessed with a fifth mounting groove, and a connecting part is threadedly connected to the fifth mounting groove. The connecting part is provided with a connecting hole, and a bearing is provided at the connecting hole.

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