Quick connecting mechanism for oil pipe

Abstract

The invention provides an oil pipe quick connecting mechanism. The oil pipe quick connecting mechanism comprises an upper pump, an O-shaped ring, an oil needle, a pressing ring, an oil pipe and a locking screw. A barb structure is arranged at the tail of the oil needle, and the oil needle is inserted into the oil pipe through the barb structure to achieve primary connection. The oil pipe is sleeved with the pressing ring, and the pressing ring can tightly press the oil pipe and the oil needle after being stressed and deformed; the upper pump is provided with a mounting hole, the oil needle, the oil pipe and the pressing ring are integrally inserted into the mounting hole after being assembled, and the oil needle is fixed to the upper pump through the locking screw. A gap between the upper pump and the oil needle is sealed by an O-shaped ring; the upper pump, the oil needle and the oil pipe are respectively provided with channels which are communicated with one another to form a complete hydraulic flow channel. Through the double-sealing design of the barb oil needle, the deformable pressing ring and the O-shaped ring, rapid and reliable connection and efficient sealing between the oil pipe and the upper pump are achieved, the assembling efficiency is remarkably improved, and the problems that oil leakage is prone to occurring and the efficiency is low in a traditional connecting mode are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of fluid transmission and control, and more particularly, to a quick connection mechanism for an oil pipe. BACKGROUND

[0002] Currently, hydraulic disc brakes are increasingly widely used in bicycles and two-wheeled electric vehicles. However, when connecting the upper pump and the oil pipe of an internal wiring type hydraulic disc brake, the traditional method requires sequentially sleeving an olive ring and a compression nut and achieving sealing by tightening. This connection method has the problem of low assembly efficiency. In addition, the sealing reliability of the traditional connection method is poor, and oil leakage is prone to occur, which increases maintenance costs and safety hazards.

[0003] To solve the above problems, a new type of quick connection mechanism is needed, which can provide reliable sealing performance while ensuring efficient assembly, avoid the risk of oil pipe falling off and hydraulic oil leakage under high pressure conditions, and thus improve the safety and service life of the overall system. SUMMARY

[0004] The purpose of the present application is to provide a quick connection mechanism for an oil pipe, which aims to solve the problems mentioned in the background.

[0005] The present application is implemented as follows: a quick connection mechanism for an oil pipe, comprising an upper pump, an O-ring, an oil needle, a compression ring, an oil pipe, and a locking screw; the tail of the oil needle is provided with a barb structure, the oil needle is inserted into the oil pipe through the barb structure to achieve preliminary connection; the compression ring is sleeved outside the oil pipe, and the compression ring can tightly press the oil pipe and the oil needle after being deformed under stress; the upper pump is provided with a mounting hole, the oil needle, the oil pipe and the compression ring assembled as a whole are inserted into the mounting hole, and the locking screw fixes the oil needle to the upper pump; the O-ring seals the gap between the upper pump and the oil needle; the upper pump, the oil needle and the oil pipe are respectively provided with channels that are in communication with each other, forming a complete hydraulic flow passage.

[0006] Optionally, the O-ring is sleeved on the oil needle and located at the joint of the oil needle and the upper pump; the O-ring is made of oil-resistant material.

[0007] Optionally, the barb structure is at least one and uniformly distributed along the circumference of the tail of the oil needle; the barb structure is a protruding structure inclined towards the tail of the oil needle, and the protruding surface is a smooth arc surface.

[0008] Optionally, the inner wall of the oil pipe and the outer wall of the oil needle are tightly fitted, and the barb structure is embedded in the inner wall of the oil pipe.

[0009] Optionally, the compression ring is made of plastic deformation material and can produce irreversible plastic deformation under external force; the compression ring is arranged close to the connecting end of the oil pipe and the oil needle, and the compression ring can tightly press the oil pipe and the oil needle after deformation.

[0010] Optionally, the oil needle is provided with a reverse slot, and the locking screw is clamped into the reverse slot to achieve firm fixation of the oil needle and the upper pump.

[0011] Optionally, the locking screw is threadedly connected with the upper pump, and the oil needle is fixed by screwing the locking screw.

[0012] Optionally, the channel of the upper pump is channel one, the channel of the oil needle is channel two, and the channel of the oil pipe is channel three, and the channel one, the channel two and the channel three are sequentially communicated.

[0013] The oil pipe quick connection mechanism provided by the application has the following beneficial effects:

[0014] By adopting the combination of the barbed oil needle, the plastic deformation compression ring and the O-ring, the quick connection structure realizes quick assembly, reliable locking and double sealing between the oil pipe and the upper pump, significantly improves the assembly efficiency, effectively prevents the oil pipe from falling off and the hydraulic oil from leaking under high pressure working condition, and overcomes the technical defects of low efficiency and poor sealing of the traditional olive ring connection mode.

[0015] Other features and advantages of the application will become apparent from the following detailed description of exemplary embodiments thereof, with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the application and, together with the description, serve to explain the principles of the application.

[0017] Fig. 1 The exploded structural schematic view of the oil pipe quick connection mechanism provided by the embodiment of the application;

[0018] Fig. 2 The cross-sectional structural schematic view of the oil pipe quick connection mechanism provided by the embodiment of the application.

[0019] In the figure: 1-upper pump, 2-O-ring, 3-oil needle, 4-compression ring, 5-oil pipe, 6-locking screw, 1a-channel one, 3a-channel two, 3b-barbed structure, 5a-channel three. DETAILED DESCRIPTION

[0020] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0021] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0022] The following is a detailed description of an oil pipe quick-connect mechanism according to an embodiment of the present invention, with reference to the accompanying drawings.

[0023] like Figs. 1-2 As shown, an oil pipe quick-connect mechanism provided in one embodiment of the present invention includes an upper pump 1, an O-ring 2, an oil needle 3, a pressure ring 4, an oil pipe 5, and a locking screw 6.

[0024] The O-ring 2 is fitted onto the oil needle 3.

[0025] The oil needle 3 is inserted into the oil tube 5 through the barb structure 3b at its tail to achieve initial connection.

[0026] The pressure ring 4 is sleeved on the outside of the oil pipe 5 and deforms under force during assembly to tightly press the oil pipe 5 and the oil needle 3 together.

[0027] The upper pump 1 is provided with a mounting hole. The oil needle 3, oil pipe 5 and pressure ring 4 are assembled and inserted into the mounting hole and fixed by the locking screw 6.

[0028] The locking screw 6 is inserted into the undercut groove on the oil needle 3 to ensure that the oil needle 3 is firmly fixed inside the upper pump 1.

[0029] The O-ring 2 seals the gap between the upper pump 1 and the oil needle 3.

[0030] The upper pump 1, the oil needle 3, and the oil pipe 5 are respectively provided with interconnected channels 1a, 3a, and 5a, forming a complete hydraulic flow channel.

[0031] The barb structure 3b of the oil needle 3 is designed to enhance the connection strength between the oil needle 3 and the oil pipe 5, and prevent the oil needle 3 from falling off under the action of high-pressure hydraulic oil. Preferably, the barb structure 3b is at least one and uniformly distributed along the circumference of the tail of the oil needle 3; the barb structure 3b is a protruding structure inclined towards the tail of the oil needle 3, and the protruding surface is a smooth arc surface; the inner wall of the oil pipe 5 is tightly fitted with the outer wall of the oil needle 3, and the barb structure 3b is embedded in the inner wall of the oil pipe 5.

[0032] The compression ring 4 can be plastically deformed under the action of external force, thereby effectively connecting the oil pipe 5 and the oil needle 3. Preferably, the compression ring 4 is made of a plastically deformable material and can be irreversibly plastically deformed under the action of external force; the compression ring 4 is arranged close to the connection end of the oil pipe 5 and the oil needle 3.

[0033] The O-ring 2 is located at the joint of the oil needle 3 and the upper pump 1, and is made of oil-resistant material to ensure long-term sealing performance.

[0034] The channel one 1a, the channel two 3a and the channel three 5a are sequentially fitted and communicated to form a complete hydraulic flow channel.

[0035] Preferably, the number of barb structures 3b is 2-4, the inclination angle is 15°-30°, and the height is 0.1-0.3m, so as to ensure that the barb structure 3b will not damage the oil pipe 5 when embedded in the inner wall of the oil pipe 5. The O-ring 2 is made of nitrile rubber (NBR) or fluororubber (FKM), and has a hardness of 70-80 Shore A to resist hydraulic oil and temperature changes. The compression ring 4 is made of copper or aluminum, has a wall thickness of 0.1-0.5mm, and can be plastically deformed by applying a force of 50-100N through a special tool.

[0036] The mechanism significantly improves the assembly efficiency and improves the reliability and leak-proof performance of the connection through the double sealing mechanism of mechanical compression and O-ring 2.

[0037] The assembly process is as follows:

[0038] The O-ring 2 is sleeved on the oil needle 3, the oil needle 3 is inserted into the oil pipe 5 through the barb structure 3b at the tail of the oil needle 3, and the initial connection is realized.

[0039] The compression ring 4 is sleeved on the outside of the oil pipe 5 and deformed under stress during assembly, thereby tightly pressing the oil pipe 5 and the oil needle 3 to prevent the oil needle 3 from falling off under the action of high-pressure hydraulic oil.

[0040] Subsequently, the whole assembly is inserted into the mounting hole of the upper pump 1, and the oil needle 3 is firmly fixed in the upper pump 1 by locking the screw 6 into the reverse slot on the oil needle 3, avoiding loosening; at the same time, the O-ring 2 effectively seals the gap between the upper pump 1 and the oil needle 3, ensuring the sealing performance of the connection.

[0041] During assembly, the special crimping tool is used to apply radial pressure to the compression ring 4 to cause irreversible plastic deformation, thereby pressing the oil pipe 5 and the oil needle 3 together. The deformation amount of the compression ring 4 is controlled to be 0.1-0.3mm to ensure uniform pressing. The smooth arc surface of the barb structure 3b reduces the insertion resistance and enhances the anti-pulling-off capability. The thread of the locking screw 6 and the upper pump 1 is M3 or M4, and the tightening torque is 0.4-0.6N·m, ensuring reliable fixation of the oil needle 3.

[0042] The present application not only significantly improves the assembly efficiency, but also greatly improves the reliability and leak-proof performance of the connection through the mechanical compression and double sealing mechanism of the O-ring 2, effectively solving the problems of low efficiency and easy oil leakage existing in the traditional olive ring connection mode.

[0043] The above embodiment of the present application provides an oil pipe quick connection mechanism, which realizes the quick assembly, reliable locking and double sealing between the oil pipe 5 and the upper pump 1 by adopting the barb oil needle 3, the plastic deformation compression ring 4 and the O-ring 2, not only significantly improves the assembly efficiency, but also effectively prevents the oil pipe 5 from falling off and the hydraulic oil from leaking under high pressure working condition, overcoming the technical defects of low efficiency and poor sealing of the traditional olive ring connection mode.

[0044] As a variant embodiment of the present application, the compression ring 4 can be replaced by a shape memory alloy material which automatically deforms and compresses after temperature rises; the barb structure 3b can be designed to be spiral distributed to further increase the connection strength. These variants are within the protection scope of the present application.

[0045] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting" and "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] In the description of the specification, the description using the terms "embodiment", "example", and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Also, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in an appropriate manner.

[0047] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, alternatives, and variations can be made thereto without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. A tubing make-up mechanism, characterized by, It comprises an upper pump (1), an O-shaped ring (2), an oil needle (3), a compression ring (4), an oil pipe (5) and a locking screw (6); The oil needle (3) is provided with a barb structure (3b) at the tail, and the oil needle (3) is inserted into the oil pipe (5) to realize preliminary connection through the barb structure (3b); The compression ring (4) is sleeved outside the oil pipe (5), and the compression ring (4) can tightly press the oil pipe (5) and the oil needle (3) after being deformed under stress; The upper pump (1) is provided with a mounting hole, and the oil needle (3), the oil pipe (5) and the compression ring (4) are inserted into the mounting hole after assembly, and the locking screw (6) fixes the oil needle (3) to the upper pump (1); The O-shaped ring (2) seals the gap between the upper pump (1) and the oil needle (3); The upper pump (1), the oil needle (3) and the oil pipe (5) are respectively provided with channels communicating with each other, forming a complete hydraulic flow channel.

2. The tubing make-up mechanism of claim 1, wherein, The O-shaped ring (2) is sleeved on the oil needle (3) and located at the matching position of the oil needle (3) and the upper pump (1); The O-shaped ring (2) is made of oil-resistant material.

3. The tubing make-up mechanism of claim 1, wherein, The barb structure (3b) is at least one and uniformly distributed along the circumference of the tail of the oil needle (3); The barb structure (3b) is a protruding structure inclined towards the tail of the oil needle (3), and the protruding surface is a smooth arc surface.

4. The tubing make-up mechanism of claim 3, wherein, The inner wall of the oil pipe (5) and the outer wall of the oil needle (3) are tightly combined, and the barb structure (3b) is embedded in the inner wall of the oil pipe (5).

5. The tubing make-up mechanism of claim 1, wherein, The compression ring (4) is made of plastic deformation material and can produce irreversible plastic deformation under external force. The compression ring (4) is arranged close to the connecting end of the oil pipe (5) and the oil needle (3), and the compression ring (4) can tightly press the oil pipe (5) and the oil needle (3) after being deformed under stress.

6. The tubing make-up mechanism of claim 1, wherein, The oil needle (3) is provided with a reverse slot, the locking screw (6) is clamped into the reverse slot, and the oil needle (3) and the upper pump (1) are firmly fixed.

7. The tubing make-up mechanism of claim 6, wherein, The locking screw (6) is threadedly connected with the upper pump (1), and the oil needle (3) is fixed by tightening the locking screw (6).

8. The tubing make-up mechanism of any of claims 1-7, wherein, The channel of the upper pump (1) is channel one (1a), the channel of the oil needle (3) is channel two (3a), and the channel of the oil pipe (5) is channel three (5a); The channel one (1a), the channel two (3a) and the channel three (5a) are sequentially communicated.

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