A quick-connect mechanism for oil pipes

Abstract

This invention provides a quick-connect mechanism for oil pipes, including an upper pump, an O-ring, an oil needle, a pressure ring, an oil pipe, and a locking screw. The oil needle has a barbed structure at its tail, allowing it to be inserted into the oil pipe for initial connection. The pressure ring is fitted over the oil pipe and, when deformed under force, tightly presses the oil pipe and oil needle together. The upper pump has a mounting hole into which the assembled oil needle, oil pipe, and pressure ring are inserted, and the locking screw secures the oil needle to the upper pump. The O-ring seals the gap between the upper pump and the oil needle. The upper pump, oil needle, and oil pipe each have interconnected channels, forming a complete hydraulic flow path. This invention, through the double sealing design of the barbed oil needle, deformable pressure ring, and O-ring, achieves a quick, reliable connection and efficient sealing between the oil pipe and the upper pump, significantly improving assembly efficiency and solving the problems of easy oil leakage and low efficiency in traditional connection methods.

Description

Technical Field

[0001] This utility model relates to the field of fluid transmission and control, and more specifically, to a quick-connect mechanism for oil pipes. Background Technology

[0002] Currently, hydraulic disc brakes are increasingly widely used in bicycles and electric two-wheelers. However, when connecting the upper pump and hydraulic hose of an internally cable-driven hydraulic disc brake, the traditional method requires sequentially inserting an olive ring and a compression nut and tightening them to achieve a seal. This connection method suffers from low assembly efficiency. Furthermore, the traditional connection method has poor sealing reliability, making it prone to oil leakage, increasing maintenance costs and safety hazards.

[0003] To address the aforementioned issues, a new type of quick-connect mechanism is needed that can provide reliable sealing performance while ensuring efficient assembly, thereby avoiding the risks of oil pipe detachment and hydraulic oil leakage under high-pressure conditions, and thus improving the overall system safety and service life. Utility Model Content

[0004] The purpose of this invention is to provide a quick-connect mechanism for oil pipes, which aims to solve the problems mentioned in the background art.

[0005] This utility model is implemented as follows: a quick-connect mechanism for an oil pipe includes an upper pump, an O-ring, an oil needle, a pressure ring, an oil pipe, and a locking screw; the oil needle has a barbed structure at its tail, and the oil needle is inserted into the oil pipe through the barbed structure to achieve a preliminary connection; the pressure ring is sleeved on the outside of the oil pipe, and the pressure ring can tightly press the oil pipe and the oil needle together after being deformed under force; the upper pump has a mounting hole, and the oil needle, oil pipe, and pressure ring are assembled and inserted into the mounting hole; 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, oil needle, and oil pipe are each provided with interconnected channels to form a complete hydraulic flow channel.

[0006] Optionally, the O-ring is fitted onto the oil needle and located at the mating point between the oil needle and the upper pump; the O-ring is made of an oil-resistant material.

[0007] Optionally, the barb structure is at least one and is evenly distributed circumferentially along the tail of the oil needle; the barb structure is a protruding structure inclined toward the tail of the oil needle, and the surface of the protrusion is a smooth arc-shaped surface.

[0008] Optionally, the inner wall of the oil tube is in close contact with the outer wall of the oil needle, and the barb structure is embedded in the inner wall of the oil tube.

[0009] Optionally, the pressure ring is made of a plastically deformable material that can undergo irreversible plastic deformation under external force; the pressure ring is located near the connection end of the oil pipe and the oil needle, and after the pressure ring is deformed under force, it can tightly press the oil pipe and the oil needle together.

[0010] Optionally, the oil needle is provided with a back groove, and the locking screw is inserted into the back groove to securely fix the oil needle to the upper pump.

[0011] Optionally, the locking screw is threadedly connected to the upper pump, and the oil needle is fixed by tightening 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, with channel one, channel two, and channel three connected in sequence.

[0013] The quick-connect mechanism for oil pipes provided by this utility model has the following beneficial effects:

[0014] By adopting a quick-connect structure that combines barbed needles, a plastically deformable pressure ring, and an O-ring, rapid assembly, reliable locking, and double sealing between the oil pipe and the upper pump are achieved. This not only significantly improves assembly efficiency but also effectively prevents the oil pipe from falling off and hydraulic oil from leaking under high-pressure conditions, overcoming the technical defects of low efficiency and poor sealing of the traditional olive ring connection method.

[0015] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0016] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0017] Figure 1 An exploded view of the quick-connect mechanism for oil pipes provided in an embodiment of this utility model;

[0018] Figure 2 This is a cross-sectional view of the quick-connect mechanism for oil pipes provided in an embodiment of the present invention.

[0019] In the diagram: 1-Upper pump, 2-O-ring, 3-Oil needle, 4-Pressure ring, 5-Oil pipe, 6-Locking screw, 1a-Channel 1, 3a-Channel 2, 3b-Barbed structure, 5a-Channel 3. Detailed Implementation

[0020] The embodiments of this utility model 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 this utility model, and should not be construed as limiting this utility model.

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

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

[0023] like Figure 1-2 As shown, an embodiment of the present invention provides a quick-connect mechanism for an oil pipe, including 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, preventing it from detaching under the action of high-pressure hydraulic oil. Preferably, there is at least one barb structure 3b, which is evenly distributed circumferentially along 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 surface of the protrusion is a smooth arc-shaped surface; the inner wall of the oil pipe 5 is tightly fitted to 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 pressure ring 4 can undergo plastic deformation under external force, thereby effectively and tightly connecting the oil pipe 5 and the oil needle 3. Preferably, the pressure ring 4 is made of a plastically deformable material that can undergo irreversible plastic deformation under external force; the pressure ring 4 is located near the connection end of the oil pipe 5 and the oil needle 3.

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

[0034] Channel 1a, channel 2a, and channel 3a are connected in sequence to form a complete hydraulic flow channel.

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

[0036] This mechanism significantly improves assembly efficiency and enhances connection reliability and leak-proof performance through a dual sealing mechanism of mechanical clamping and O-ring 2.

[0037] The assembly process is as follows:

[0038] The O-ring 2 is fitted onto the oil needle 3, and the oil needle 3 is inserted into the oil pipe 5 through the barb structure 3b at its tail to achieve a preliminary connection.

[0039] 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, preventing them from falling off under the action of high-pressure hydraulic oil.

[0040] Subsequently, the entire 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 locking screw 6 into the undercut groove on the oil needle 3 to prevent it from loosening; at the same time, the O-ring 2 effectively seals the gap between the upper pump 1 and the oil needle 3 to ensure the sealing performance of the connection.

[0041] During assembly, a special crimping tool is used to apply radial pressure to the pressure ring 4, causing irreversible plastic deformation, thereby pressing the oil pipe 5 and the oil needle 3 together. The deformation of the pressure ring 4 is controlled within 0.1-0.3 mm to ensure uniform pressing. The smooth arc surface of the barb structure 3b reduces insertion resistance and enhances pull-out resistance. The locking screw 6 has an M3 or M4 thread fit with the upper pump 1, and the tightening torque is 0.4-0.6 N·m to ensure reliable fixing of the oil needle 3.

[0042] This invention not only significantly improves assembly efficiency, but also greatly enhances the reliability and leak-proof performance of the connection through a dual sealing mechanism of mechanical clamping and O-ring 2, effectively solving the problems of low efficiency and easy oil leakage in the traditional olive ring connection method.

[0043] The present invention provides a quick-connect mechanism for oil pipes in the above embodiments. By adopting a quick-connect structure combining barbed needles 3, a plastically deformable pressure ring 4 and an O-ring 2, it achieves quick assembly, reliable locking and double sealing between the oil pipe 5 and the upper pump 1. This not only significantly improves assembly efficiency, but also effectively prevents the oil pipe 5 from falling off and hydraulic oil from leaking under high pressure conditions, overcoming the technical defects of low efficiency and poor sealing of the traditional olive ring connection method.

[0044] As a variant embodiment of this utility model, the pressure ring 4 can be replaced with a shape memory alloy material, which automatically deforms and tightens upon temperature increase; the barb structure 3b can be designed in a spiral distribution to further increase the connection strength. These variants are all within the protection scope of this utility model.

[0045] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0046] In the description of this specification, references to terms such as "embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0047] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A quick-connect mechanism for oil pipes, characterized in that, It 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); The oil needle (3) has a barb structure (3b) at its tail, and the oil needle (3) is inserted into the oil tube (5) through the barb structure (3b) to achieve a preliminary connection; The pressure ring (4) is sleeved on the outside of the oil pipe (5), and the pressure ring (4) can tightly press the oil pipe (5) and the oil needle (3) together after being deformed by force. 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. The locking screw (6) fixes the oil needle (3) to the upper pump (1). The O-ring (2) seals the gap between the upper pump (1) and the oil needle (3); The upper pump (1), oil needle (3) and oil pipe (5) are respectively provided with interconnected channels to form a complete hydraulic flow channel.

2. The quick-connect mechanism for oil pipes according to claim 1, characterized in that, The O-ring (2) is fitted onto the oil needle (3) and is located at the mating point between the oil needle (3) and the upper pump (1); The O-ring (2) is made of oil-resistant material.

3. The quick-connect mechanism for oil pipes according to claim 1, characterized in that, The barb structure (3b) is at least one and is evenly distributed circumferentially along the tail of the oil needle (3); The barb structure (3b) is a protruding structure that is inclined toward the tail of the oil needle (3), and the surface of the protrusion is a smooth arc-shaped surface.

4. The quick-connect mechanism for oil pipes according to claim 3, characterized in that, The inner wall of the oil pipe (5) is closely 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).

5. The quick-connect mechanism for oil pipes according to claim 1, characterized in that, The pressure ring (4) is made of a plastic deformable material and can undergo irreversible plastic deformation under external force. The pressure ring (4) is located near the connection end of the oil pipe (5) and the oil needle (3), and the pressure ring (4) can tightly press the oil pipe (5) and the oil needle (3) together after being deformed by force.

6. The quick-connect mechanism for oil pipes according to claim 1, characterized in that, The oil needle (3) is provided with a back groove, and the locking screw (6) is inserted into the back groove to achieve a firm fixation between the oil needle (3) and the upper pump (1).

7. The quick-connect mechanism for oil pipes according to claim 6, characterized in that, The locking screw (6) is threadedly connected to the upper pump (1), and the oil needle (3) is fixed by tightening the locking screw (6).

8. The quick-connect mechanism for oil pipes according to any one of claims 1-7, characterized in that, The upper pump (1) has a channel one (1a), the oil needle (3) has a channel two (3a), and the oil pipe (5) has a channel three (5a). Channel 1 (1a), Channel 2 (3a) and Channel 3 (5a) are connected in sequence.

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