A front fork tube sealing device

By combining the spinning assembly, sealing mechanism, and auxiliary heating and cooling mechanism, the problem of low efficiency in traditional fork tube sealing devices is solved, achieving efficient sealing and cooling, and ensuring the quality and production efficiency of bicycle fork tubes.

CN224294510UActive Publication Date: 2026-05-29CHONGQING SHUANGEN TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHONGQING SHUANGEN TECH CO LTD
Filing Date
2025-06-12
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Traditional fork tube sealing devices have low sealing efficiency at high temperatures, long cooling time, resulting in high energy consumption, limited production capacity, and poor sealing effect.

Method used

The device employs a combination of spinning components, sealing mechanism, heating mechanism, and auxiliary heating and cooling mechanism. Through the synergistic effect of horizontal and forward/backward moving components, it utilizes the hot air generated by the vortex tube to assist in heating and cooling, thereby improving sealing efficiency and cooling speed.

Benefits of technology

It achieves a uniform and firm sealing effect, improves sealing efficiency, reduces energy consumption, and enhances production capacity and cost control.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224294510U_ABST
    Figure CN224294510U_ABST
Patent Text Reader

Abstract

The utility model discloses a kind of sealing devices for front fork tube, it is related to sealing device technical field, including workbench;Rotary pressure assembly is set to one end of workbench;Sealing mechanism is set to the top middle part of workbench;Heating mechanism is set to one side of sealing mechanism;Auxiliary heating cooling mechanism is set to the other side of sealing mechanism, and the heating and cooling efficiency of front fork tube in sealing process is improved by auxiliary heating cooling mechanism.The utility model is set by the cooperation of rotary pressure assembly, sealing mechanism, heating mechanism and auxiliary heating cooling mechanism, not only can realize the sealing operation of round pipe, to ensure that subsequent assembly front fork tube can obtain uniform and firm sealing effect, guarantee the product quality of bicycle;Round pipe can also avoid the process of sealing to be subjected to temperature change and lead to poor sealing effect, simultaneously accelerate the cooling time of sealing operation, improve sealing efficiency.
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Description

Technical Field

[0001] This utility model relates to the field of sealing device technology, specifically to a sealing device for a front fork tube. Background Technology

[0002] With societal progress, bicycles and electric bikes have become increasingly popular, serving as indispensable modes of transportation in daily life. As a crucial component of bicycles, the quality of the fork tube directly impacts the overall safety and stability of the vehicle. Among the various stages of fork tube manufacturing, the round tube sealing process is particularly critical. It is a vital operation ensuring the overall performance of the fork tube, thus requiring specialized fork tube sealing equipment to achieve a uniform and robust seal. This ensures the quality of the bicycle and meets the ever-growing market demands.

[0003] However, traditional fork tube sealing devices typically require heating the tube at extremely high temperatures before sealing. This makes the tube susceptible to temperature fluctuations during the sealing process, resulting in poor sealing performance. Furthermore, the tube requires a lengthy cooling process after sealing, which consumes a significant amount of time and greatly reduces sealing efficiency. In addition, the excessively long cooling time increases energy consumption and occupies more equipment resources, further limiting the improvement of production capacity and effective cost control.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0005] In view of the problems in the related technologies, this utility model proposes a sealing device for front fork tubes to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] Therefore, the specific technical solution adopted by this utility model is as follows:

[0007] A sealing device for fork tubes includes a worktable; a spinning assembly disposed at one end of the worktable; a sealing mechanism disposed through the top center of the worktable; a heating mechanism disposed on one side of the sealing mechanism; and an auxiliary heating and cooling mechanism disposed on the other side of the sealing mechanism, wherein the auxiliary heating and cooling mechanism improves the heating and cooling efficiency of the fork tube during the sealing process.

[0008] Furthermore, in order to achieve the sealing operation of the round tube, the sealing machine can squeeze and seal the round tube to be sealed under the coordinated movement of the horizontal moving component and the front and rear moving component, thereby improving the flexibility of the sealing operation. The sealing mechanism includes a sealing machine that runs through the middle of the top of the worktable, a moving plate at the bottom of the sealing machine, a horizontal moving component at the bottom of the moving plate, and a front and rear moving component connected to the worktable at the bottom of the horizontal moving component.

[0009] Furthermore, in order to achieve the heating operation of the round tube to facilitate subsequent sealing, the heating component can be moved to one end of the round tube to be sealed for heating under the coordinated movement of the front-back moving component two and the left-right moving component two. The heating mechanism includes the front-back moving component two set on one side of the top of the worktable and located on the side of the sealing mechanism. The top of the front-back moving component two is provided with a connecting plate, the top of the connecting plate is provided with the left-right moving component two, and the top of the left-right moving component two is provided with the heating component.

[0010] Furthermore, to improve the sealing efficiency of the round tube, the hot air generated by the vortex tube during sealing can be used to assist in heating under the movement of the robotic arm, further ensuring the sealing effect. After sealing, the cold air generated by the vortex tube is directed to the sealing area through a flow-dividing component, providing a gentler and more efficient cooling, accelerating the cooling speed of the sealed round tube, and avoiding quality problems caused by rapid cooling, thereby improving the cooling efficiency of the sealed round tube. The auxiliary heating and cooling mechanism includes an air compressor located on the other side of the top of the workbench, one end of which is connected to... A vortex tube is installed, and a robotic arm connected to the workbench is symmetrically arranged on the side of the vortex tube away from the air compressor. Both ends of the vortex tube are connected to flexible hoses that are connected to the output end of the robotic arm. A flow divider assembly is installed at one end of a set of flexible hoses located at the cold air outlet end of the vortex tube. The flow divider assembly includes a flow divider box located at one end of a set of flexible hoses located at the cold air outlet end of the vortex tube. A flow divider plate is installed inside the flow divider box. Several through holes are opened on the side of the flow divider box away from the vortex tube. Several flow divider holes are opened on one side of the flow divider plate, and the diameter of the flow divider holes is larger than the diameter of the through holes.

[0011] The beneficial effects of this utility model are as follows:

[0012] 1. This utility model, through the coordinated arrangement of a spinning assembly, a sealing mechanism, a heating mechanism, and an auxiliary heating and cooling mechanism, not only enables the sealing operation of round tubes to ensure that the fork tubes assembled subsequently achieve a uniform and firm sealing effect, thus guaranteeing the product quality of the bicycle; it also avoids poor sealing effect caused by temperature changes during the sealing process of the round tubes, while accelerating the cooling time of the sealing operation, improving sealing efficiency, avoiding energy consumption, and ensuring increased production capacity and effective cost control.

[0013] 2. Through the sealing mechanism, the sealing machine can squeeze and seal the round tube to be sealed by the coordinated movement of the horizontal moving component and the front and rear moving component, thereby improving the flexibility of the sealing operation.

[0014] 3. With the auxiliary heating and cooling mechanism, the hot air generated by the vortex tube during sealing can be assisted by the movement of the robotic arm to further ensure the sealing effect. After sealing, the cold air generated by the vortex tube is directed to the sealing part by the diversion component, providing a gentler and more efficient cooling, accelerating the cooling speed of the sealed round tube, and avoiding quality problems caused by rapid cooling, thereby improving the cooling efficiency of the sealed round tube. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a structural schematic diagram of a sealing device for a fork tube according to an embodiment of the present utility model;

[0017] Figure 2 This is a partial structural schematic diagram of a sealing device for a fork tube according to an embodiment of the present utility model;

[0018] Figure 3 This is a second partial structural schematic diagram of a sealing device for a front fork tube according to an embodiment of the present utility model;

[0019] Figure 4 This is a partial sectional view of a sealing device for a fork tube according to an embodiment of the present utility model;

[0020] Figure 5 This is a partial cross-sectional view of the sealing mechanism in a sealing device for a front fork tube according to an embodiment of the present utility model;

[0021] Figure 6 This is a schematic diagram of the heating mechanism in a sealing device for a fork tube according to an embodiment of the present invention;

[0022] Figure 7 This is one of the cross-sectional views of a flow divider component in a sealing device for a fork tube according to an embodiment of the present utility model;

[0023] Figure 8 This is a second cross-sectional view of the middle diversion component in a sealing device for a front fork tube according to an embodiment of the present utility model.

[0024] In the picture:

[0025] 1. Workbench; 2. Spinning assembly; 3. Sealing mechanism; 301. Sealing machine; 302. Moving plate; 303. Horizontal moving assembly one; 304. Forward and backward moving assembly one; 4. Heating mechanism; 401. Forward and backward moving assembly two; 402. Connecting plate; 403. Left and right moving assembly two; 404. Heating assembly; 5. Auxiliary heating and cooling mechanism; 501. Air compressor; 502. Vortex tube; 503. Robotic arm; 504. Hose; 505. Diverter assembly; 5051. Diverter box; 50511. Through hole; 5052. Diverter plate one; 50521. Diverter hole; 6. Control panel. Detailed Implementation

[0026] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0027] According to an embodiment of the present invention, a sealing device for a fork tube is provided.

[0028] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figures 1-8 As shown, the sealing device for fork tubes according to an embodiment of the present invention includes a workbench 1; a spinning assembly 2 disposed at one end of the workbench 1; a sealing mechanism 3 disposed through the top center of the workbench 1; a heating mechanism 4 disposed on one side of the sealing mechanism 3; an auxiliary heating and cooling mechanism 5 disposed on the other side of the sealing mechanism 3, and the auxiliary heating and cooling mechanism 5 improves the heating and cooling efficiency of the fork tube during the sealing process; and a control panel 6 disposed at the other end of the workbench 1.

[0029] Furthermore, it should be noted that the aforementioned control panel 6 consists of control buttons, a display screen, a controller, and an interface connector. The control panel 6 is electrically connected to the spinning assembly 2, the sealing mechanism 3, the heating mechanism 4, and the auxiliary heating and cooling mechanism 5. The operator inputs control commands through the buttons, and the controller processes them and sends signals to the spinning assembly 2, the sealing mechanism 3, the heating mechanism 4, and the auxiliary heating and cooling mechanism 5. The display screen shows the status information in real time, coordinating the work of the positioning device to achieve heating, clamping, sealing, cooling, and releasing of the round tube, thereby improving the efficiency and safety of the operation. This control panel 6 is existing technology and will not be elaborated on further here.

[0030] Furthermore, it should be noted that the aforementioned spinning assembly 2 consists of a three-jaw chuck, a drive motor, a rotating shaft, a coupling, bearings, and a support block. The three-jaw chuck comprises a chuck body, jaws, a flange, and a protective cover. Rotating the chuck body causes the three jaws to move synchronously radially, uniformly approaching or moving away from the center to clamp the round tube. The drive motor drives the three-jaw chuck to achieve clamping, and then the drive motor drives the rotating shaft to rotate, causing the three-jaw chuck to rotate. Both the spinning assembly 2 and the three-jaw chuck are existing technologies and will not be elaborated upon further here.

[0031] In one embodiment, the sealing mechanism 3 includes a sealing machine 301 that is disposed through the middle of the top of the workbench 1. A moving plate 302 is disposed at the bottom of the sealing machine 301. A horizontal moving component 303 is disposed at the bottom of the moving plate 302. A front-to-back moving component 304 connected to the workbench 1 is disposed at the bottom of the horizontal moving component 303. Under the cooperative movement of the horizontal moving component 303 and the front-to-back moving component 304, the sealing machine 301 can squeeze and seal the round tube to be sealed, thereby improving the flexibility of the sealing operation.

[0032] In addition, it should be noted that the sealing machine 301 mentioned above consists of a motor and a sealing extrusion head. The sealing extrusion head is rotated by the motor, so that the sealing machine 301 can extrude and seal the round tube. This sealing machine 301 is existing technology and will not be elaborated on here.

[0033] Furthermore, it should be noted that both the aforementioned horizontal moving component 303 and the front-back moving component 304 consist of a guide rail, a sliding member, a lead screw, a protective box, and a motor. The protective box is located on the outside of the lead screw, and the protective box is connected to the sliding member. The motor drives the lead screw to rotate, and the lead screw drives the sliding member to move on the guide rail, causing the moving plate 302 to move back, forth, left, and right. The composition and working principle of the horizontal moving component 303 and the front-back moving component 304 are existing technologies and will not be elaborated further here.

[0034] In one embodiment, the heating mechanism 4 includes a second forward and backward moving component 401 disposed on one side of the top of the workbench 1 and on one side of the sealing mechanism 3. The top of the second forward and backward moving component 401 is provided with a connecting plate 402, the top of the connecting plate 402 is provided with a second left and right moving component 403, and the top of the second left and right moving component 403 is provided with a heating component 404. Under the cooperative movement of the second forward and backward moving component 401 and the second left and right moving component 403, the heating component 404 can be moved to one end of the round tube to be sealed for heating.

[0035] Furthermore, it should be noted that the aforementioned forward and backward moving component 2 401 and left and right moving component 2 403 are both composed of an electric telescopic rod, a limiting frame, and a moving block. The moving block is located on the outside of the limiting frame and is connected to the telescopic end of the electric telescopic rod. By extending and retracting the electric telescopic rod, the moving block moves on the limiting frame, causing the connecting plate 402 to move forward, backward, left, and right. The composition and working principle of the forward and backward moving component 2 401 and the left and right moving component 2 403 are existing technologies and will not be elaborated further here.

[0036] Furthermore, it should be noted that the heating assembly 404 consists of a ceramic heater, a temperature controller, and insulating material. The ceramic heater consists of an electrical component, a highly thermally conductive ceramic substrate, and a resistance wire embedded therein. When current passes through the resistance wire in the ceramic heater, heat is generated due to the resistance. This heat is then conducted through the ceramic substrate to the target area for heating. This heating assembly 404 is prior art and will not be elaborated further here.

[0037] In one embodiment, the auxiliary heating and cooling mechanism 5 includes an air compressor 501 located on the other side of the top of the workbench 1. One end of the air compressor 501 is connected to a vortex tube 502. A robotic arm 503 connected to the workbench 1 is symmetrically arranged on the side of the vortex tube 502 away from the air compressor 501. Both ends of the vortex tube 502 are connected to flexible hoses 504 connected to the output end of the robotic arm 503. A diversion assembly 505 is provided at one end of a set of flexible hoses 504 located at the cold air outlet end of the vortex tube 502. The diversion assembly 505 includes a diversion box 5051 located at one end of a set of flexible hoses 504 located at the cold air outlet end of the vortex tube 502. The diversion box 5051 contains... The part is equipped with a flow divider plate 5052; the flow divider box 5051 has several through holes 50511 on the side away from the vortex tube 502; the flow divider plate 5052 has several flow divider holes 50521 on one side, and the diameter of the flow divider holes 50521 is larger than the diameter of the through holes 50511; under the movement of the robotic arm 503, the hot air generated by the vortex tube 502 during sealing can be used to assist in heating, further ensuring the sealing effect. After sealing, the cold air generated by the vortex tube 502 is guided to the sealing part by the flow divider assembly 505, providing a gentler and more efficient cooling, accelerating the cooling speed of the sealed round tube, and avoiding quality problems caused by rapid cooling, thereby improving the cooling efficiency of the sealed round tube.

[0038] Furthermore, it should be noted that the aforementioned vortex tube 502 consists of an air inlet, a vortex chamber, a central cone or control valve, a cold air outlet, a hot air outlet, and a regulating valve. The cold air outlet is connected to the flow splitter 505. Compressed air is accelerated through a nozzle and enters the vortex chamber, forming a high-speed rotating vortex. Due to centrifugal force, lower-velocity molecules tend to move outwards, while higher-velocity molecules remain in the central region. This results in the outer gas having higher kinetic energy than the inner gas. The central cone forces some of the inner low-temperature gas to flow towards the cold air outlet, while the outer high-temperature gas is discharged through the hot air outlet. By adjusting the position of the central cone or the valve at the hot air outlet, the ratio of cold and hot airflows can be changed, thereby affecting the temperature of the output airflow. The performance of the vortex tube can be optimized by adjusting the inlet pressure and the ratio of cold and hot airflows. The composition and working principle of this vortex tube 502 are existing technologies and will not be elaborated upon further here.

[0039] Furthermore, it should be noted that the aforementioned air compressor 501 consists of an electric motor, a reciprocating compressor, an air tank, a filter, and a dryer. When the compressor starts working, it increases the internal space of the compressor, causing the internal pressure to be lower than the external atmospheric pressure, thereby drawing in external air. Then, under the compression action of the reciprocating compressor, the gas pressure is increased, and finally, the high-pressure air is input into the air inlet of the vortex tube 502. The composition and working principle of this air compressor 501 are existing technologies and will not be elaborated on further here.

[0040] In addition, it should be noted that the above-mentioned robotic arm 503 consists of a base, joints, connecting rods, hydraulic drive, position sensor and end effector, wherein the end effector is a fixed ring at one end of a fixed connecting hose 504. This robotic arm 503 is existing technology and will not be elaborated on further here.

[0041] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0042] In practical applications, a robotic arm moves the cylindrical tube to be sealed into the three-jaw chuck of the spinning assembly 2. The controller on the control panel activates the spinning assembly 2, clamping the cylindrical tube to be sealed in the three-jaw chuck. Then, the cylindrical tube is rotated. Simultaneously, the controller activates the heating mechanism 4 and the auxiliary heating and cooling mechanism 5. The heating assembly 404, under the coordinated movement of the forward / backward moving assembly 401 and the left / right moving assembly 403, moves to one end of the cylindrical tube to be sealed for heating. At this time, the air compressor 501 causes the vortex tube 502 to generate cold air at one end of the flow divider assembly 505, while the vortex tube 502 moves away from the flow divider assembly. At the other end of 505, hot air is generated. The controller controls the robotic arm 503 connected to the diversion assembly 505 to rotate, causing the side of the diversion box 5051 with several through holes 50511 to rotate away from the direction of the circular tube to be sealed. The controller also controls the robotic arm 503 in the direction of the hot air outlet to move, allowing the hot air outlet hose 504 to be aligned with the circular tube to be sealed for auxiliary heating. After the heating assembly 404 has finished heating, the controller controls the forward / backward movement assembly 401 and the left / right movement assembly 403 to move, causing the heating assembly 404 to return to its original position, i.e., to move to the end of the circular tube away from the direction of sealing. Heating is stopped, and the sealing mechanism 3 is activated via the controller, causing the sealing extrusion head of the sealing machine 301 to rotate. Simultaneously, under the coordinated movement of the horizontal moving component 303 and the forward / backward moving component 304, and with the auxiliary heating effect of the auxiliary heating and cooling mechanism 5, the sealing machine 301 is driven to extrude and seal the round tube to be sealed. After sealing, the horizontal moving component 303 and the forward / backward moving component 304 are moved by the controller, causing the sealing machine 301 to return to its original position and stop rotating. At this time, the auxiliary heating and cooling mechanism 5 is controlled by the controller, causing the robotic arm 5 controlling the hot air outlet to... 03 moves, causing the outlet end of the hot air outlet hose 504 to move away from the sealed round tube. The controller controls the movement of the robotic arm 503 connected to the diversion assembly 505, so that the diversion assembly 505 can be aligned with the round tube to be sealed for auxiliary cooling and accelerate the cooling speed. After the sealed round tube has cooled down, the controller controls the spinning assembly 2 to stop rotating. Then, the three-jaw chuck is controlled to release the sealed round tube. At the same time, the robotic arm removes the sealed round tube and places it in the next process to splice the sealed round tube into a front fork tube. At this time, the front fork tube sealing device continues to perform the above steps to seal the round tube.

[0043] In summary, by utilizing the above-mentioned technical solution of this utility model, through the coordinated arrangement of the spinning assembly 2, sealing mechanism 3, heating mechanism 4, and auxiliary heating and cooling mechanism 5, not only can the sealing operation of the round tube be achieved to ensure that the fork tube assembled subsequently obtains a uniform and firm sealing effect, thus guaranteeing the product quality of the bicycle; it can also prevent the round tube from being subjected to temperature changes during the sealing process, resulting in poor sealing effect, while accelerating the cooling time of the sealing operation, improving sealing efficiency, avoiding energy consumption, and ensuring increased production capacity and effective cost control; through the sealing mechanism 3, the horizontally moving assembly 303 and With the coordinated movement of the forward and backward moving components 304, the sealing machine 301 squeezes and seals the round tube to be sealed, improving the flexibility of the sealing operation. Through the auxiliary heating and cooling mechanism 5, the hot air generated by the vortex tube 502 during sealing can be used to assist in heating under the movement of the robotic arm 503, further ensuring the sealing effect. After sealing, the cold air generated by the vortex tube 502 is directed to the sealing part by the diversion component 505, providing a gentler and more efficient cooling, accelerating the cooling speed of the sealed round tube, and avoiding quality problems caused by rapid cooling, thereby improving the cooling efficiency of the sealed round tube.

[0044] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., 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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sealing device for a fork tube, characterized in that, include: Workbench (1); A spinning assembly (2) is disposed at one end of the worktable (1); A sealing mechanism (3) is installed through the top center of the workbench (1); A heating mechanism (4) is disposed on one side of the sealing mechanism (3); An auxiliary heating and cooling mechanism (5) is provided on the other side of the sealing mechanism (3), and the heating and cooling efficiency of the fork tube during the sealing process is improved by the auxiliary heating and cooling mechanism (5).

2. A sealing device for a fork tube according to claim 1, characterized in that, The sealing mechanism (3) includes a sealing machine (301) that is disposed through the middle of the top of the workbench (1). A moving plate (302) is provided at the bottom of the sealing machine (301). A horizontal moving component (303) is provided at the bottom of the moving plate (302). A front-back moving component (304) connected to the workbench (1) is provided at the bottom of the horizontal moving component (303).

3. A sealing device for a fork tube according to claim 1, characterized in that, The heating mechanism (4) includes a front-to-back moving component two (401) disposed on one side of the top of the workbench (1) and located on one side of the sealing mechanism (3). A connecting plate (402) is disposed at the top of the front-to-back moving component two (401), a left-to-right moving component two (403) is disposed at the top of the connecting plate (402), and a heating component (404) is disposed at the top of the left-to-right moving component two (403).

4. A sealing device for a fork tube according to claim 1, characterized in that, The auxiliary heating and cooling mechanism (5) includes an air compressor (501) located on the other side of the top of the workbench (1). One end of the air compressor (501) is connected to a vortex tube (502). A robotic arm (503) connected to the workbench (1) is symmetrically arranged on the side of the vortex tube (502) away from the air compressor (501). Both ends of the vortex tube (502) are connected to hoses (504) connected to the output end of the robotic arm (503). A diversion assembly (505) is provided at one end of a set of hoses (504) located at the cold air outlet end of the vortex tube (502).

5. A sealing device for a fork tube according to claim 4, characterized in that, The diversion assembly (505) includes a diversion box (5051) disposed at one end of a set of hoses (504) located at the cold air outlet end of the vortex tube (502), and a diversion plate (5052) is disposed inside the diversion box (5051).

6. A sealing device for a fork tube according to claim 5, characterized in that, The flow divider box (5051) has several through holes (50511) on the side away from the vortex tube (502); the flow divider plate (5052) has several flow divider holes (50521) on one side, and the diameter of the flow divider holes (50521) is larger than the diameter of the through holes (50511).