A high-efficiency oil injection anti-backflow sealing control device for a damper

Abstract

The utility model discloses a kind of damper high-efficiency oil injection anti-reflux sealing control devices, belong to damper oil injection technical field, the utility model includes damper main body, the surface of oil injection seat is equipped with oil injection hole, the surface of oil injection seat is equipped with threaded seat, detachably mounted with sealing tube in the inside of threaded seat, the inside of sealing tube is provided with anti-reflux structure, oil enters the inside of sealing tube with high pressure, sealing block is extruded, sealing block moves to one side, moves by driving movable block with pressure rod, stretches reset spring, sealing block and sealing ring are separated, so that oil enters the inside of damper main body by sealing tube, supplement oil, when stopping oil injection, sealing block is no longer extruded by external force, sealing block restores original position under the action of reset spring, and sealing ring is clamped, so that sealing tube is quickly sealed, prevent oil reflux, affect use effect.

Description

Technical Field

[0001] This utility model belongs to the field of damper oil injection technology, and in particular relates to a high-efficiency oil injection anti-backflow sealing control device for dampers. Background Technology

[0002] A damper is a device that absorbs or dissipates energy (usually kinetic energy). Its core function is not to stop motion, but to "suppress" or "decelerate" motion, especially unwanted vibrations, oscillations, or impacts. Dampers work by converting unwanted kinetic energy (the energy of motion) into other forms of energy (most commonly heat), which is dissipated into the surrounding environment, thus rapidly decaying the amplitude of the motion. Damper lubrication is usually the process of injecting hydraulic oil or silicone oil into viscous dampers. In the damper production process, lubrication is a core assembly step. For damaged dampers (such as those that leak oil), re-lubrication is a key step in the repair. In existing dampers, the oil filling process typically requires precise insertion of the oil filling pipe into a pre-designated oil filling hole. During this process, oil is forcibly injected into the damper's internal space under high pressure. While this method can meet the basic functional requirements of the damper to some extent and ensure its normal operation under specific conditions, it still reveals some significant drawbacks in practical applications. Specifically, during the oil filling process, when the oil rapidly enters the oil filling hole under high pressure, it often generates a large backflow force. This backflow force can easily lead to unstable connection between the oil filling pipe and the oil filling hole, or even the oil filling pipe accidentally detaching from the oil filling hole, thus severely affecting the efficiency and effectiveness of the oil filling. Furthermore, because the oil is difficult to control precisely during high-pressure injection, backflow is also prone to occur. This backflow not only interferes with the normal oil filling process but may also cause potential damage to the internal structure of the damper, thereby affecting its overall performance and lifespan. Therefore, addressing these shortcomings through technical improvements has become an important issue for enhancing the oil filling efficiency and reliability of dampers. Utility Model Content

[0003] This utility model provides a high-efficiency oil injection anti-backflow sealing control device for dampers to solve the problems in the prior art.

[0004] The present invention adopts the following technical solution: a base body including a damper body, an oil injection seat is provided on one side of the damper body, an oil injection hole is opened on the surface of the oil injection seat, a threaded seat is installed on the surface of the oil injection seat, a sealing tube is detachably installed inside the threaded seat, an anti-backflow structure is provided inside the sealing tube, an oil injection pipe is detachably installed at one end of the sealing pipe, and a connecting structure is provided between the oil injection pipe and the sealing pipe.

[0005] In a further technical solution, a connecting rope is fixedly installed on one side of the sealing tube, and a sealing cap is rotatably installed on one end of the connecting rope. The sealing cap can be threadedly connected to the sealing tube.

[0006] In a further technical solution, a clamping ring is fixedly installed on the surface of the oil injection pipe, one side of the clamping ring is in contact with one end of the sealing pipe, and the outer diameter of the clamping ring is equal to the outer diameter of one end of the sealing pipe.

[0007] In a further technical solution, an annular groove is provided on one side of the clamping ring, and a sealing ring is movably inserted inside the annular groove. One side of the sealing ring is in contact with one end of the sealing tube, and a clamping spring is fixedly installed between the sealing ring and the annular groove.

[0008] A further technical solution includes a sealing ring, which is fixedly installed inside a sealing tube. A fixing sleeve is fixedly installed inside the sealing tube. A pressure rod is movably inserted into one end of the fixing sleeve. A sealing block is fixedly installed at one end of the pressure rod, and the sealing block cooperates with the sealing ring.

[0009] In a further technical solution, support blocks are fixedly installed on both sides of the surface of the fixed sleeve, and the two sides of the support blocks are fixedly connected to the two sides of the inner wall of the sealing tube. One end of the pressure rod is movably inserted into the inside of the fixed sleeve and is equipped with a movable block. A return spring connected to the movable block is sleeved on the surface of the pressure rod.

[0010] A further technical solution is provided, wherein the connection structure includes a sliding groove, the sliding groove is formed on both sides of the inner wall of the sealing pipe, a connecting groove is formed at one end of the sliding groove, the connecting groove and the sliding groove are distributed in an L-shape, and sliders are fixedly installed on both sides of one end of the oil injection pipe, the sliders cooperating with the connecting groove and the sliding groove.

[0011] The above-mentioned technical solutions adopted in the embodiments of this utility model can achieve the following beneficial effects: Firstly, during oil filling, the oil enters the interior of the sealing tube under high pressure, squeezing the sealing block and causing it to move to one side. This movement is driven by the pressure rod, which in turn moves the movable block, stretching the return spring. The sealing block then separates from the sealing ring, allowing the oil to enter the damper body through the sealing tube for replenishment. When oil filling stops, the sealing block is no longer squeezed by external force and returns to its original position under the action of the return spring, engaging with the sealing ring. This ensures a quick seal in the sealing tube, preventing oil backflow and ensuring optimal performance.

[0012] Secondly, during oil filling, the oil filling pipe is inserted into the inside of the sealing pipe, and the slider is inserted into the inside of the sliding groove. As the oil filling pipe moves, the slider moves along the sliding groove. When the oil filling pipe is fully inserted, the slider moves to the connection point between the connecting groove and the sliding groove. The user rotates the oil filling pipe, and the slider moves along the connecting groove, which helps to limit the oil filling pipe inside the sealing pipe and prevents the oil filling pipe from separating from the sealing pipe during oil filling. During oil filling, the high pressure impact force causes the oil filling pipe to be subjected to a recoil force outward from the sealing pipe, and the slider moves into the limiting groove, which strengthens the limiting effect and further enhances the oil filling effect. Attached Figure Description

[0013] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model; Figure 2 This is a schematic diagram of the oil filling seat structure of this utility model; Figure 3 This is a half-sectional structural diagram of the oil filling seat mounting location of this utility model. Figure 4 This is a schematic diagram of a half-section of the oil injection seat of this utility model; Figure 5 This is a half-sectional structural diagram of the connection between the oil injection pipe and the sealing pipe of this utility model. Figure 6 This utility model Figure 5 Enlarged structural diagram at point A in the middle; Figure 7 This is a schematic diagram of the half-section structure of the sealing tube of this utility model.

[0014] Figure Labels 1. Damper body; 2. Oil injection seat; 3. Sealing tube; 4. Oil injection pipe; 5. Sealing cap; 6. Threaded seat; 7. Connecting rope; 8. Compression ring; 9. Sealing ring; 10. Fixing sleeve; 11. Return spring; 12. Pressure rod; 13. Sealing block; 14. Limiting groove; 15. Sliding block; 16. Sealing ring; 17. Compression spring; 18. Sliding groove; 19. Connecting groove. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0016] The technical solutions provided by the various embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0017] like Figures 1 to 5 As shown, a high-efficiency oil injection anti-backflow sealing control device for a damper is provided, including a damper body 1, an oil injection seat 2 is provided on one side of the damper body 1, an oil injection hole is opened on the surface of the oil injection seat 2, a threaded seat 6 is installed on the surface of the oil injection seat 2, a sealing tube 3 is detachably installed inside the threaded seat 6, an anti-backflow structure is provided inside the sealing tube 3, the anti-backflow structure includes a sealing ring 9, the sealing ring 9 is fixedly installed inside the sealing tube 3, a fixed sleeve 10 is fixedly installed inside the sealing tube 3, a pressure rod 12 is movably inserted through one end of the fixed sleeve 10, a sealing block 13 is fixedly installed at one end of the pressure rod 12, the sealing block 13 cooperates with the sealing ring 9, support blocks are fixedly installed on both sides of the surface of the fixed sleeve 10, the two sides of the support blocks are fixedly connected to the two sides of the inner wall of the sealing tube 3, one end of the pressure rod 12 is movably inserted through the inside of the fixed sleeve 10 and a movable block is installed, a return spring 11 connected to the movable block is sleeved on the surface of the pressure rod 12, and an oil injection pipe 4 is detachably installed at one end of the sealing tube 3; In this embodiment, the sealing tube 3 is tightly connected to the threaded seat 6 via a fine threaded structure and is precisely inserted into the internal space of the oil injection hole. One end of the oil injection tube 4 is inserted into the other end of the sealing tube 3 and is firmly connected to the sealing tube 3 via a specially designed connection structure. During the oil injection process, the oil smoothly enters the interior of the sealing tube 3 under high pressure, applying uniform extrusion force to the sealing block 13. Under the action of external force, the sealing block 13 moves smoothly to one side, and the movable block moves synchronously through the pressure rod 12 connected to it. This process also moderately stretches the return spring 11. As the sealing block 13 gradually separates from the sealing ring 9, the oil can smoothly enter the interior of the damper body 1 through the sealing tube 3, thus timely replenishing the damper oil. When the oil filling operation stops, the sealing block 13 is no longer squeezed by external force. At this time, the return spring 11 plays its role, quickly restoring the sealing block 13 to its original position and tightly engaging with the sealing ring 9, ensuring that the sealing tube 3 can quickly achieve a sealing effect, effectively preventing the backflow of oil, thereby avoiding adverse effects on the equipment's performance.

[0018] like Figure 2and Figure 4 As shown, a connecting rope 7 is fixedly installed on one side of the sealing tube 3, and a sealing cap 5 is rotatably installed on one end of the connecting rope 7. The sealing cap 5 can be threadedly connected to the sealing tube 3. In this embodiment, thanks to the careful design and effective function of the sealing cap 5, when oil injection is not required, the sealing cap 5 can be tightly connected to the sealing tube 3 via threads. This connection method ensures that the sealing tube 3 is tightly sealed at the connection point, thereby effectively preventing oil leakage inside the damper body 1. In this way, not only is the sealing performance of the sealing tube 3 significantly improved, but the sealing performance of the entire damper system is further enhanced, ensuring that it can maintain a stable and reliable operating state during use and avoiding the impact of oil leakage on its normal function.

[0019] like Figure 5 and Figure 6 As shown, a clamping ring 8 is fixedly installed on the surface of the oil injection pipe 4. One side of the clamping ring 8 is in contact with one end of the sealing pipe 3. The outer diameter of the clamping ring 8 is equal to the outer diameter of one end of the sealing pipe 3. An annular groove is opened on one side of the clamping ring 8. A sealing ring 16 is movably inserted inside the annular groove. One side of the sealing ring 16 is in contact with one end of the sealing pipe 3. A clamping spring 17 is fixedly installed between the sealing ring 16 and the annular groove.

[0020] In this embodiment, when one end of the oil injection pipe 4 is precisely inserted into the interior of the sealing tube 3, the sealing ring 16 located on one side of the clamping ring 8 will achieve a tight fit with one end of the sealing tube 3. As the oil injection pipe 4 gradually penetrates deeper, the sealing ring 16 also begins to move towards the interior of the annular groove. During this process, the sealing ring 16 applies pressure to the clamping spring 17, causing it to compress. However, the clamping spring 17 is not passively subjected to pressure, but rather generates a corresponding reaction force. Under the action of this reaction force, the sealing ring 16 is tightly pushed against the surface of the sealing tube 3, thereby ensuring that the sealing ring 16 and the sealing tube 3 achieve the best fit. This tight fit not only effectively enhances the sealing performance but also successfully prevents air intrusion, avoiding the damping effect being affected by air entry, and ensuring the stability and reliability of the system.

[0021] like Figures 4 to 7 As shown, a connection structure is provided between the oil injection pipe 4 and the sealing pipe 3. The connection structure includes a sliding groove 18, which is opened on both sides of the inner wall of the sealing pipe 3. A connecting groove 19 is opened at one end of the sliding groove 18. The connecting groove 19 and the sliding groove 18 are distributed in an L-shape. A slider 15 is fixedly installed on both sides of one end of the oil injection pipe 4. The slider 15 cooperates with the connecting groove 19 and the sliding groove 18. A limiting groove 14 is opened at one end of the connecting groove 19. The limiting groove 14 cooperates with the slider 15. The length of the limiting groove 14 is less than the distance between the slider 15 and one end of the injection pipe. In this embodiment, during the oil injection operation, the oil injection pipe 4 must first be precisely inserted into the internal space of the sealing pipe 3. At the same time, the slider 15 is also inserted into the internal position of the sliding groove 18. As the oil injection pipe 4 moves gradually, the slider 15 will also move smoothly along the sliding groove 18. When the oil injection pipe 4 is fully inserted into the sealing pipe 3, the slider 15 will move to the junction of the connecting groove 19 and the sliding groove 18. At this time, the user needs to gently rotate the oil injection pipe 4 so that the slider 15 can continue to move along the connecting groove 19. The purpose of this is to effectively limit the oil injection pipe 4 inside the sealing pipe 3 and prevent the oil injection pipe 4 from accidentally detaching from the sealing pipe 3 during the oil injection process. During the oil injection process, due to the high-pressure impact, the oil injection pipe 4 will be subjected to a recoil force towards the outside of the sealing pipe 3. To cope with this situation, the slider 15 will move into the inside of the limiting groove 14. In this way, not only is the limiting effect strengthened and the stability of the oil injection pipe 4 inside the sealing pipe 3 ensured, but the oil injection effect is also further enhanced, making the oil injection operation smoother and more efficient. Through this design, the safety of the oil injection process is significantly improved, while also ensuring the quality of oil injection.

[0022] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A high-efficiency oil injection anti-backflow sealing control device for a damper, characterized in that, Includes a damper body (1), an oil injection seat (2) is provided on one side of the damper body (1), an oil injection hole is opened on the surface of the oil injection seat (2), and a threaded seat (6) is installed on the surface of the oil injection seat (2). The threaded seat (6) is detachably fitted with a sealing tube (3), and the sealing tube (3) is provided with an anti-backflow structure. One end of the sealing tube (3) is detachably equipped with an oil injection tube (4), and a connection structure is provided between the oil injection tube (4) and the sealing tube (3).

2. The damper high-efficiency oil injection anti-backflow sealing control device according to claim 1, characterized in that: A connecting rope (7) is fixedly installed on one side of the sealing tube (3), and a sealing cap (5) is rotatably installed on one end of the connecting rope (7). The sealing cap (5) can be threadedly connected to the sealing tube (3).

3. The damper high-efficiency oil injection anti-backflow sealing control device according to claim 1, characterized in that: A clamping ring (8) is fixedly installed on the surface of the oil injection pipe (4). One side of the clamping ring (8) is in contact with one end of the sealing pipe (3). The outer diameter of the clamping ring (8) is equal to the outer diameter of one end of the sealing pipe (3).

4. The damper high-efficiency oil injection anti-backflow sealing control device according to claim 3, characterized in that: An annular groove is provided on one side of the clamping ring (8), and a sealing ring (16) is movably inserted inside the annular groove. One side of the sealing ring (16) is in contact with one end of the sealing tube (3), and a clamping spring (17) is fixedly installed between the sealing ring (16) and the annular groove.

5. The damper high-efficiency oil injection anti-backflow sealing control device according to claim 1, characterized in that: The anti-backflow structure includes a sealing ring (9), which is fixedly installed inside the sealing tube (3). A fixing sleeve (10) is fixedly installed inside the sealing tube (3). A pressure rod (12) is movably inserted through one end of the fixing sleeve (10). A sealing block (13) is fixedly installed at one end of the pressure rod (12). The sealing block (13) cooperates with the sealing ring (9).

6. The damper high-efficiency oil injection anti-backflow sealing control device according to claim 5, characterized in that: Support blocks are fixedly installed on both sides of the surface of the fixed sleeve (10). The two sides of the support blocks are fixedly connected to the two sides of the inner wall of the sealing tube (3). One end of the pressure rod (12) is movably inserted into the inside of the fixed sleeve (10) and is equipped with a movable block. A reset spring (11) connected to the movable block is sleeved on the surface of the pressure rod (12).

7. The damper high-efficiency oil injection anti-backflow sealing control device according to claim 1, characterized in that: The connection structure includes a sliding groove (18), which is opened on both sides of the inner wall of the sealing pipe (3). A connecting groove (19) is opened at one end of the sliding groove (18). The connecting groove (19) and the sliding groove (18) are distributed in an L-shape. A slider (15) is fixedly installed on both sides of one end of the oil injection pipe (4). The slider (15) cooperates with the connecting groove (19) and the sliding groove (18).

8. The damper high-efficiency oil injection anti-backflow sealing control device according to claim 7, characterized in that: One end of the connecting groove (19) is provided with a limiting groove (14), which cooperates with the slider (15). The length of the limiting groove (14) is less than the distance between the slider (15) and one end of the injection tube.

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