Quick release oil line and brake system

Abstract

The utility model embodiment provides a kind of quick-release oil pipe and brake system, the quick-release oil pipe is converted into axial thrust by the thread cooperation of threaded fitting and threaded section, the rotation movement of threaded fitting is converted into, push bushing moves in guide section, utilize the cooperation of guide section and bushing guide surface, axial force is converted into the radial clamping force of bushing, realize the clamping of flexible pipe;Conversely, reverse rotation threaded fitting, reduce the axial thrust to bushing, bushing reversely moves under the action of self or external force, radial force disappears, realize the release of flexible pipe.This embodiment can realize the disassembly of flexible pipe without completely disassembling threaded fitting, simplify the operation process;And realize the clamping and release of flexible pipe by the axial movement of bushing, avoid the frequent replacement problem caused by the plastic deformation of bushing in existing structure, reduce maintenance cost;At the same time, reduce disassembly step, reduce the risk of oil leakage caused by improper operation.

Description

Technical Field

[0001] This utility model relates to the field of bicycle technology, and in particular to a quick-release oil pipe and brake system. Background Technology

[0002] Typically, brake levers or hydraulic calipers in a braking system have a pump outlet that pumps hydraulic oil out. The pump outlet is connected to an oil pipe, which in turn connects to other bicycle components.

[0003] In existing technologies, such as CN103569307B, a hydraulic bicycle component system is disclosed. This system utilizes tightening torque to secure a first threaded fitting, thereby axially compressing a first tubular bushing. This deforms the first tubular bushing, facilitating the pressing of the first end of a flexible tube onto a first tubular blade, thus reliably connecting the first end of the flexible tube to the hose attachment of the master cylinder. In this solution, the first tubular bushing is forced to undergo axial elastic or plastic deformation to fix the flexible tube. However, in actual products, copper bushings are typically used. When the flexible tube needs to be removed, the copper bushing often fails due to plastic deformation, requiring replacement with a new copper bushing. During bushing replacement, the first threaded fitting must be removed simultaneously, making the operation cumbersome and posing a risk of oil leakage due to disassembly. Utility Model Content

[0004] This utility model provides a quick-release oil pipe and brake system, which aims to solve the problem that the existing technology is cumbersome to operate when replacing bushings and is prone to oil leakage.

[0005] This utility model embodiment provides a quick-release oil pipe, applied to a braking system, comprising:

[0006] The base has a mounting port, and the base has a mounting hole communicating with the mounting port. The mounting hole includes a threaded section and a guide section, and the threaded section is closer to the mounting port than the guide section.

[0007] A bushing, wherein a guide surface is provided on the bushing, and the bushing is installed in the guide section and is axially movable in the guide section;

[0008] A flexible tube, which is inserted into the mounting hole along the mounting port and passes through the bushing;

[0009] A threaded pipe fitting is sleeved on the outer periphery of the flexible pipe, and one end of the threaded pipe fitting is threaded to the threaded section, and can drive the bushing to move axially to clamp or loosen the flexible pipe.

[0010] Specifically, the bushing is made of a rigid material.

[0011] Specifically, the diameter of the guide section gradually decreases towards the side away from the mounting port, and the guide surface gradually tilts towards the central axis of the bushing towards the side away from the mounting port.

[0012] Specifically, the bushing includes a first bushing and a second bushing, both of which are semi-circular bushings, and the first bushing and the second bushing form an annular bushing.

[0013] Specifically, the outer diameter of the flexible tube is less than or equal to the inner diameter of the threaded pipe fitting, and the inner diameter of the bushing is less than the outer diameter of the flexible tube.

[0014] Specifically, one end of the flexible tube is provided with an insert, and the mounting hole further includes an insertion section away from the mounting port, with the insert located in the insertion section.

[0015] Specifically, a sealing ring is provided between the insert and the insert segment.

[0016] Specifically, the mounting hole further includes a mounting section located between the insertion section and the guide section. The diameter of the mounting section is larger than that of the insertion section. The quick-release oil pipe also includes an elastic element disposed in the mounting section. One end of the elastic element abuts against the bushing, and the other end abuts against the end of the insertion section.

[0017] Specifically, the end of the bushing is provided with a flared opening.

[0018] This utility model embodiment also provides a braking system, including the quick-release oil pipe as described above.

[0019] This utility model provides a quick-release oil pipe and braking system. The quick-release oil pipe, through the threaded engagement of a threaded fitting and a threaded section, converts the rotational motion of the threaded fitting into axial thrust, pushing the bushing to move within a guide section. Utilizing the engagement between the guide section and the bushing's guide surface, the axial force is converted into a radial clamping force on the bushing, achieving clamping of the flexible pipe. Conversely, rotating the threaded fitting in the opposite direction reduces the axial thrust on the bushing, causing the bushing to move in the opposite direction under its own or external force, eliminating the radial force and releasing the flexible pipe. This embodiment allows for the installation and removal of the flexible pipe without completely disassembling the threaded fitting, simplifying the operation process. Furthermore, by using the axial movement of the bushing to clamp and release the flexible pipe, it avoids the frequent replacement problems caused by bushing plastic deformation in existing structures, reducing maintenance costs. Simultaneously, it reduces disassembly steps, lowering the risk of oil leakage due to improper operation. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A schematic diagram of the structure of a quick-release oil pipe provided in an embodiment of this utility model;

[0022] Figure 2 An internal cross-sectional view of a quick-release oil pipe provided in an embodiment of this utility model;

[0023] Figure 3 This is an internal cross-sectional view of the substrate;

[0024] Figure 4 Schematic diagram of the bushing structure Figure 1 ;

[0025] Figure 5 Schematic diagram of the bushing structure Figure 2 ;

[0026] Figure 6 This is a schematic diagram of an explosion of the bushing.

[0027] Explanation of the markings in the image:

[0028] 1. Base; 11. Mounting port; 12. Mounting hole; 121. Threaded section; 122. Guide section; 123. Insertion section; 124. Mounting section;

[0029] 2. Bushing; 21. Guide surface; 22. First bushing; 23. Second bushing; 24. Flaring;

[0030] 3. Flexible pipe;

[0031] 4. Threaded pipe fittings;

[0032] 5. Inserts;

[0033] 6. Sealing ring;

[0034] 7. Elastic components. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0036] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0037] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0038] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0039] Please see Figure 1-3 This utility model embodiment provides a quick-release oil pipe, applied to a braking system, comprising:

[0040] The base 1 has a mounting port 11 and a mounting hole 12 communicating with the mounting port 11 inside the base 1. The mounting hole 12 includes a threaded section 121 and a guide section 122. The threaded section 121 is closer to the mounting port 11 than the guide section 122.

[0041] Bushing 2, with a guide surface 21 provided on bushing 2, is installed in guide section 122 and can move axially in guide section 122;

[0042] Flexible tube 3 is inserted into mounting hole 12 along mounting port 11 and passes through bushing 2;

[0043] Threaded pipe fitting 4 is sleeved on the outer periphery of flexible pipe 3, and one end of threaded pipe fitting 4 is threaded to threaded section 121, and can drive bushing 2 to move axially to clamp or loosen flexible pipe 3.

[0044] In this embodiment, during assembly, the bushing 2 is first inserted into the guide section 122 of the mounting hole 12, and then the flexible tube 3 is inserted from the mounting port 11, passing through the threaded fitting 4 and the bushing 2 in sequence. Subsequently, the threaded fitting 4 is rotated to connect with the threaded section 121 and gradually tightened. The threaded fitting 4 pushes the bushing 2 along the guide section 122 away from the mounting port 11. Under the constraint of the guide section 122, the bushing 2 radially contracts, thereby clamping the flexible tube 3. When disassembling the flexible tube 3, the threaded fitting 4 is rotated in the opposite direction to loosen it (without needing to be completely removed). The bushing 2 loses the thrust of the threaded fitting 4 and moves along the guide section 122 towards the mounting port 11, releasing the radial constraint and allowing the flexible tube 3 to be pulled out directly. In this embodiment, the rotational motion of the threaded pipe fitting 4 is converted into axial thrust through the threaded engagement of the threaded section 121. This thrust pushes the bushing 2 to move within the guide section 122. The engagement between the guide section 122 and the guide surface 21 of the bushing 2 converts the axial force into a radial clamping force on the bushing 2, thus clamping the flexible pipe 3. Conversely, rotating the threaded pipe fitting 4 in the opposite direction reduces the axial thrust on the bushing 2. Under its own force or external force, the bushing 2 moves in the opposite direction, the radial force disappears, and the flexible pipe 3 is released. This embodiment allows for the assembly and disassembly of the flexible pipe 3 without completely disassembling the threaded pipe fitting 4, simplifying the operation process. Furthermore, the axial movement of the bushing 2 enables the clamping and releasing of the flexible pipe 3, avoiding the frequent replacement problems caused by the plastic deformation of the bushing 2 in existing structures, thus reducing maintenance costs. Simultaneously, it reduces disassembly steps, lowering the risk of oil leakage due to improper operation.

[0045] In a specific implementation, the base 1 can be made of aluminum alloy, the threaded section 121 of the mounting hole 12 can be set to a fine thread of M10×1.25, and the guide section 122 can be set to a length of 20mm; the flexible tube 3 is made of high-pressure resistant rubber tubing, and its outer diameter can be set to 8mm; the threaded fitting 4 is made of brass, with an inner diameter of 8.5mm to accommodate the flexible tube 3. Alternatively, the base 1 can be made of stainless steel to improve corrosion resistance, and the threaded section 121 can be made of imperial threads (such as 1 / 8-27NPT) to accommodate different connection requirements.

[0046] Specifically, such as Figure 4-6 As shown, bushing 2 is made of a rigid material.

[0047] Since the bushing 2 in the prior art is usually made of copper, the bushing 2 undergoes plastic deformation to clamp the flexible tube 3 during the tightening of the threaded pipe fitting 4. However, the bushing 2 is prone to plastic deformation failure, which leads to the need to replace the bushing 2 frequently. Therefore, in this embodiment, the bushing 2 is made of a rigid material, such as stainless steel or rigid plastic. By utilizing the high strength and low plastic deformation characteristics of rigid materials, it undergoes elastic deformation when subjected to radial extrusion force from the guide section 122. After being released, it can return to its original shape, thereby achieving reuse and reducing the number of times the bushing 2 needs to be replaced.

[0048] The specific implementation process is as follows: When the threaded fitting 4 pushes the bushing 2 to move along the guide section 122, the bushing 2 undergoes radial contraction (elastic deformation) due to the constraint of the guide section 122 to clamp the flexible tube 3; when it is necessary to disassemble the flexible tube 3, the threaded fitting 4 is loosened, and after the bushing 2 loses its radial constraint, it returns to its original shape under its own elasticity, thereby releasing the flexible tube 3. Because rigid materials are not prone to plastic deformation, they can maintain their original structure and performance after multiple clamping and loosening. This significantly reduces the replacement frequency of the bushing 2 and reduces the consumable costs during maintenance; at the same time, the stability of the rigid material ensures consistent reliability of each clamping, avoiding the problem of clamping force attenuation caused by plastic deformation of the bushing 2.

[0049] In the specific implementation process, bushing 2 can be made of 304 stainless steel with a thickness of 1.5mm; or it can be made of polyoxymethylene (POM) rigid plastic, which is lighter and cheaper.

[0050] Specifically, such as Figure 3 and Figure 5 As shown, the aperture of the guide section 122 gradually decreases towards the side away from the mounting port 11, and the guide surface 21 gradually tilts towards the central axis of the bushing 2 towards the side away from the mounting port 11.

[0051] In this embodiment, the diameter of the guide section 122 gradually decreases towards the side away from the mounting port 11, that is, the portion of the mounting hole 12 corresponding to the guide section 122 is set as a tapered hole; the guide surface 21 of the bushing 2 gradually tilts towards the central axis of the bushing 2 towards the side away from the mounting port 11, that is, the guide surface 21 is set as a tapered surface that matches the guide section 122. In this embodiment, the axial movement of the bushing 2 is converted into radial contraction force through the cooperation of the tapered guide section 122 and the tapered guide surface 21. The specific implementation process is as follows: When the threaded fitting 4 pushes the bushing 2 to move away from the installation port 11, the guide surface 21 of the bushing 2 contacts the tapered inner wall of the guide section 122. As the axial movement proceeds, the inner diameter of the guide section 122 gradually decreases, generating a radially inward squeezing force on the guide surface 21, forcing the bushing 2 to contract radially, thereby clamping the flexible tube 3 passing through the bushing 2; when the threaded fitting 4 is loosened and the bushing 2 moves towards the installation port 11, the inner diameter of the guide section 122 gradually increases, the radial squeezing force on the guide surface 21 decreases, and the bushing 2 expands radially under its own elasticity or external force, releasing the flexible tube 3.

[0052] This embodiment achieves efficient force conversion through conical surface mating. A small axial thrust can generate sufficient radial clamping force, making the clamping operation more labor-saving. At the same time, the conical surface mating ensures the uniformity of radial shrinkage of the bushing 2, avoiding excessive local stress on the flexible tube 3 and damage.

[0053] In practical implementation, the taper of the guide section 122 can be set to 1:10 (i.e., for every 10mm axial movement, the radial diameter decreases by 1mm), and the taper of the guide surface 21 of the bushing 2 is consistent with it, ensuring a tight fit between the two. In other embodiments, the guide section 122 and the guide surface 21 can adopt an arc-shaped structure (such as spherical contact) to reduce the frictional resistance between them and extend their service life.

[0054] Specifically, such as Figure 4-6 As shown, the bushing 2 includes a first bushing 22 and a second bushing 23. Both the first bushing 22 and the second bushing 23 are semi-circular bushings 2, and the first bushing 22 and the second bushing 23 form an annular bushing 2.

[0055] In this embodiment, the bushing 2 is configured as a split structure, comprising a separable first bushing 22 and a second bushing 23. Both the first and second bushings 23 are semi-circular bushings 2, which can be joined to form an annular bushing 2. The flexible tube 3 is inserted into the hollow area of ​​the annular bushing 2. This embodiment adopts a split structure, which can reduce the radial shrinkage resistance of the bushing 2. Compared with the integral annular bushing 2, the two semi-circular bushings 2 are more likely to move towards the center when subjected to radial extrusion force, thereby clamping the flexible tube 3. At the same time, when released, the two semi-circular bushings 2 can be separated more completely, making it easier to remove the flexible tube 3.

[0056] The process is as follows: when the bushing 2 is subjected to radial extrusion force from the guide section 122, the first bushing 22 and the second bushing 23 move toward the central axis, thereby reducing the gap between the first bushing 22 and the second bushing 23 and clamping the flexible tube 3 together; when the radial extrusion force disappears, the two semi-circular bushings 2 separate from each other under their own elasticity or external force (such as a spring), and the gap between the first bushing 22 and the second bushing 23 increases, at which point the flexible tube 3 can be pulled out smoothly.

[0057] In specific implementations, the inner walls of the first bushing 22 and the second bushing 23 may be provided with anti-slip textures to increase the friction between them and the flexible tube 3. In other embodiments, the bushing 2 may include three 120-degree fan-shaped bushings 2 to further improve the uniformity of clamping.

[0058] Specifically, the outer diameter of the flexible tube 3 is less than or equal to the inner diameter of the threaded pipe fitting 4, and the inner diameter of the bushing 2 is less than the outer diameter of the flexible tube 3.

[0059] In this embodiment, to ensure that the flexible tube 3 can pass smoothly through the threaded fitting 4 and avoid jamming during assembly, the outer diameter of the flexible tube 3 is preferably set to be less than or equal to the inner diameter of the threaded fitting 4; and the inner diameter of the bushing 2 is set to be less than the outer diameter of the flexible tube 3, so that the bushing 2 can form an interference fit with the flexible tube 3 when it contracts radially, thereby generating sufficient friction to clamp the flexible tube 3 and prevent its axial movement or oil leakage. This embodiment can ensure a smooth assembly process and reduce the difficulty of operation; the interference fit achieves reliable clamping, which not only prevents the flexible tube 3 from loosening, but also ensures sealing performance.

[0060] In a specific implementation plan, the inner diameter of the threaded fitting 4 can be set to 10mm, the outer diameter of the flexible tube 3 can be set to 9.5mm (smaller than the inner diameter of the threaded fitting 4), and the inner diameter of the bushing 2 is 9mm (smaller than the outer diameter of the flexible tube 3), forming an interference fit of 0.5mm. For flexible tubes 3 with thicker walls, the inner diameter of the threaded fitting 4, the outer diameter of the flexible tube 3, and the inner diameter of the bushing 2 can be adjusted appropriately to ensure a suitable interference fit.

[0061] Specifically, such as Figure 2-3 As shown, one end of the flexible tube 3 is provided with an insert 5, and the mounting hole 12 also includes an insertion section 123 away from the mounting port 11, with the insert 5 located in the insertion section 123.

[0062] In this embodiment, the insertion member 5 is provided at one end of the flexible tube 3 to enhance the structural strength of the end of the flexible tube 3 and prevent the flexible tube 3 from deforming during assembly or use due to its soft material. At the same time, the mounting hole 12 has an insertion section 123, which can provide positioning constraints for the insertion member 5, limit the axial movement range of the flexible tube 3, and ensure its accurate installation position.

[0063] The implementation process is as follows: when the flexible tube 3 is inserted into the mounting hole 12, the insert 5 at the end will enter the insertion section 123 of the mounting hole 12. The inner wall of the insertion section 123 forms a radial constraint on the insert 5 to prevent the flexible tube 3 from being over-inserted or from undergoing axial displacement due to vibration. At the same time, the rigid structure of the insert 5 can resist the pressure of hydraulic oil and prevent the end of the flexible tube 3 from breaking due to excessive force.

[0064] In a specific implementation, the insert 5 can be made of brass into a cylinder, and the end of the flexible tube 3 can be fixedly connected to the insert 5 through a vulcanization process, or the insert 5 and the end of the flexible tube 3 can be set as an integral molding structure; wherein, the aperture of the insert section 123 is smaller than the aperture of the guide section 122.

[0065] Specifically, such as Figure 2-3 As shown, a sealing ring 6 is provided between the insert 5 and the insert segment 123.

[0066] In this embodiment, to prevent hydraulic oil leakage during braking, a sealing ring 6 can be provided between the insert 5 and the insert section 123. Utilizing the elastic deformation characteristics of the sealing ring 6, it fills the gap between the insert 5 and the insert section 123, forming a sealing barrier to prevent hydraulic oil leakage from the mating gap and ensure stable hydraulic pressure in the braking system. Specifically, an annular groove can be provided on the outer periphery of the insert 5, with the opening of the annular groove facing the wall of the insert section 123. When the insert 5 is inserted into the insert section 123, the sealing ring 6 is compressed between the annular groove on the outer periphery of the insert 5 and the inner wall of the insert section 123. After elastic deformation, the sealing ring 6 tightly adheres to both sides, completely filling the gap and blocking the leakage path of the hydraulic oil. When the braking system is working, the pressure of the hydraulic oil further compresses the sealing ring 6, thereby enhancing the sealing effect.

[0067] In this embodiment, a reliable seal is achieved through the sealing ring 6, which effectively prevents hydraulic oil leakage, ensures the normal working pressure of the braking system, and improves the safety and reliability of the system. At the same time, the elasticity of the sealing ring 6 can absorb a certain amount of vibration and reduce the wear between the insert 5 and the insert section 123.

[0068] In a specific implementation, the sealing ring 6 can be made of nitrile rubber (NBR) O-ring, which has good oil resistance and elasticity. To enhance the sealing effect, two or more sealing rings 6 can be provided to form a double or multiple seal.

[0069] Specifically, such as Figure 2-3 As shown, the mounting hole 12 also includes a mounting section 124, which is located between the insertion section 123 and the guide section 122. The diameter of the mounting section 124 is larger than the diameter of the insertion section 123. The quick-release oil pipe also includes an elastic element 7, which is disposed in the mounting section 124. One end of the elastic element 7 abuts against the bushing 2, and the other end abuts against the end of the insertion section 123.

[0070] In this embodiment, an installation section 124 is also provided between the insertion section 123 and the guide section 122. The installation section 124 is used to accommodate the elastic element 7, so that one end of the elastic element 7 can abut against the bushing 2 and the other end can abut against the end of the insertion section 123. Thus, the elastic potential energy of the elastic element 7 (such as a spring) is used to provide axial thrust to the bushing 2 when the threaded pipe 4 is loosened, pushing the bushing 2 to move automatically towards the installation port 11, so that the bushing 2 is freed from the radial constraint of the guide section 122, realizing automatic loosening and reducing manual operation steps. During operation, when the threaded fitting 4 is tightened, the threaded fitting 4 pushes the bushing 2 to move away from the installation port 11, and the bushing 2 compresses the elastic element 7 in the installation section 124, storing elastic potential energy; when the threaded fitting 4 is loosened, the elastic element 7 releases elastic potential energy, pushing the bushing 2 to move closer to the installation port 11, and the bushing 2 gradually separates from the tapered area of ​​the guide section 122, the radial constraint is released, the first bushing 22 and the second bushing 23 separate, making it easier to remove the flexible tube 3.

[0071] In this embodiment, the bushing 2 is automatically reset by the elastic element 7, which simplifies the disassembly operation and improves maintenance efficiency. At the same time, the thrust of the elastic element 7 can ensure that the bushing 2 is completely freed from the constraint of the guide section 122, avoiding the difficulty in removing the flexible tube 3 due to the bushing 2 being stuck.

[0072] In a specific implementation, the aperture of the mounting section 124 is larger than the aperture of the insertion section 123, so that the contact position between the mounting section 124 and the insertion section 123 forms a stepped surface. The elastic element 7 can be a compression spring, with one end of the compression spring abutting against the end face of the bushing 2 and the other end abutting against the stepped surface between the insertion section 123 and the mounting section 124.

[0073] Specifically, such as Figure 4-6 As shown, the end of the bushing 2 is provided with a flared opening 24.

[0074] In this embodiment, in order to facilitate the insertion of the flexible tube 3, a flared end 24 is provided at the end of the bushing 2, so that a guide slope is formed in the middle region of the bushing 2, thereby reducing the resistance when the flexible tube 3 is inserted into the bushing 2. When the flexible tube 3 is inserted into the bushing 2, the flared end 24 at the end of the bushing 2 will contact the flexible tube 3 first. The slope structure guides the flexible tube 3 smoothly into the interior of the bushing 2, avoiding damage to the flexible tube 3 caused by rigid collision.

[0075] In a specific implementation, the flared openings 24 at both ends of the bushing 2 can be set at an angle of 45 degrees and the length of the flared openings 24 can be set to 3 mm. Alternatively, the flared openings 24 can be designed as a trumpet shape to further reduce insertion resistance.

[0076] This utility model embodiment also provides a braking system, including the quick-release oil pipe as described above.

[0077] This embodiment applies quick-release hydraulic hoses to the braking system, utilizing the quick-release characteristics and reliable sealing performance of the hydraulic hoses to improve the maintenance convenience and operational stability of the braking system.

[0078] During maintenance, simply loosen the threaded fitting 4 of the quick-release hydraulic hose to quickly remove the flexible hose 3 for replacement or repair; there is no need to replace the bushing 2. After the operation, simply retighten the threaded fitting 4 to restore service. In practical implementation, this braking system can be applied to bicycles. One end of the quick-release hydraulic hose connects to the master cylinder inside the bicycle brake lever, and the other end connects to the hydraulic caliper of the bicycle wheel. The flexible hose 3 is made of high-pressure resistant nylon-reinforced rubber to adapt to the working environment of bicycles.

[0079] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A quick-release oil pipe, used in a braking system, characterized in that, include: The base has a mounting port, and the base has a mounting hole communicating with the mounting port. The mounting hole includes a threaded section and a guide section, and the threaded section is closer to the mounting port than the guide section. A bushing, wherein a guide surface is provided on the bushing, and the bushing is installed in the guide section and is axially movable in the guide section; A flexible tube, which is inserted into the mounting hole along the mounting port and passes through the bushing; A threaded pipe fitting is sleeved on the outer periphery of the flexible pipe, and one end of the threaded pipe fitting is threaded to the threaded section, and can drive the bushing to move axially to clamp or loosen the flexible pipe.

2. The quick-release oil pipe according to claim 1, characterized in that, The bushing is made of a rigid material.

3. The quick-release oil pipe according to claim 1, characterized in that, The diameter of the guide section gradually decreases toward the side away from the mounting port, and the guide surface gradually tilts toward the central axis of the bushing toward the side away from the mounting port.

4. The quick-release oil pipe according to claim 1, characterized in that, The bushing includes a first bushing and a second bushing, both of which are semi-circular bushings, and the first bushing and the second bushing form an annular bushing.

5. The quick-release oil pipe according to claim 1, characterized in that, The outer diameter of the flexible tube is less than or equal to the inner diameter of the threaded pipe fitting, and the inner diameter of the bushing is less than the outer diameter of the flexible tube.

6. The quick-release oil pipe according to claim 1, characterized in that, One end of the flexible tube is provided with an insert, and the mounting hole further includes an insertion section away from the mounting port, with the insert located in the insertion section.

7. The quick-release oil pipe according to claim 6, characterized in that, A sealing ring is provided between the insert and the insert segment.

8. The quick-release oil pipe according to claim 6, characterized in that, The mounting hole further includes a mounting section located between the insertion section and the guide section. The diameter of the mounting section is larger than that of the insertion section. The quick-release oil pipe also includes an elastic element disposed in the mounting section. One end of the elastic element abuts against the bushing, and the other end abuts against the end of the insertion section.

9. The quick-release oil pipe according to claim 1, characterized in that, The bushing has a flared end.

10. A braking system, characterized in that, Includes the quick-release tubing as described in any one of claims 1-9.

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