A hydraulic cylinder oil inlet connector

Abstract

This utility model relates to the field of connector technology and discloses a hydraulic cylinder inlet connector, including an inlet pipe and a connecting pipe. The inner wall of the inlet pipe is slidably fitted with the outer wall of the connecting pipe. A mounting cover is fixedly fitted onto the outer wall of the connecting pipe. A fixing ring is provided inside the mounting cover, which is fixedly fitted onto the outer wall of the inlet pipe. An elastic locking block is fixedly installed on the bottom surface of the fixing block and is in contact with the inner wall of the mounting cover. A sealing component is provided between the connecting pipe and the inlet pipe. The inner wall of the lower end of the mounting cover has an annular groove larger than the size of the elastic locking block, providing deformation space for the elastic locking block. This hydraulic cylinder inlet connector, through the cooperation of the inner and outer double sealing structures, can effectively prevent oil leakage from the connector gap, while isolating external impurities from entering the connector, ensuring oil cleanliness and safety in use; moreover, the sealing component is sized to match other components, will not interfere with normal assembly, and balances sealing stability and assembly smoothness.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, specifically to an oil cylinder inlet connector. Background Technology

[0002] Existing hydraulic cylinder inlet connectors have two major problems in practical applications: First, disassembly and assembly are inconvenient. Most connectors require additional tools to disassemble multiple sets of fixing structures (such as bolts and clips) to separate or connect the inlet pipe and the connecting pipe. The steps are cumbersome and difficult for non-professionals to complete independently. At the same time, friction between components can easily cause assembly jamming, further reducing disassembly and assembly efficiency. Second, the sealing performance is insufficient. Most connectors use a single sealing structure, which can easily lead to oil leakage from the joint gap. Some connectors also present a contradiction between "ease of disassembly and assembly" and "sealing performance"—either the complex sealing structure increases the difficulty of disassembly and assembly, or frequent disassembly and assembly causes wear on the seals, ultimately affecting the stability of the hydraulic cylinder's oil supply.

[0003] To address this issue, we propose a hydraulic cylinder inlet connector. Utility Model Content

[0004] The purpose of this invention is to provide a hydraulic cylinder inlet connector, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a hydraulic cylinder inlet connector, comprising an inlet pipe and a connecting pipe, wherein the inner wall of the inlet pipe is slidably fitted with the outer wall of the connecting pipe, an installation cover is fixedly fitted on the outer wall of the connecting pipe, a fixing ring is provided inside the installation cover and fixedly fitted with the outer wall of the inlet pipe, an elastic locking block is provided on the bottom surface of the fixing ring and fixedly installed with the inner wall of the installation cover, and a sealing component is provided between the connecting pipe and the inlet pipe.

[0006] Preferably, the inner wall of the lower end of the mounting cover has an annular groove larger than the size of the elastic block, providing deformation space for the elastic block. During disassembly and assembly, the elastic block can be smoothly contracted or reset, facilitating quick separation or docking of the oil inlet pipe and the connecting pipe.

[0007] Preferably, the upper edge of the fixing ring has rounded corners to reduce the frictional resistance between the fixing ring and the elastic block, ensuring smooth installation, avoiding jamming, and reducing assembly difficulty.

[0008] Preferably, the elastic locking block is made of elastic sheet material. Relying on the elastic deformation characteristics of the elastic sheet, it can quickly lock or disengage from the fixing ring without the need for additional tools, simplifying the connection and disassembly steps of the connector.

[0009] Preferably, an annular plate is fixedly installed on the inner wall of the mounting cover, and the bottom surface of the annular plate is in contact with the top surface of the fixing ring to enhance the sealing performance.

[0010] Preferably, the sealing assembly includes an outer sealing ring fixedly sleeved on the outer wall of the oil inlet pipe, an outer sealing cover sleeved on the outer wall of the upper end of the oil inlet pipe, the outer sealing cover being fixedly installed on the outer wall of the connecting pipe, an inner sealing cover being fixedly installed at the bottom end of the connecting pipe, an inner sealing ring being sleeved on the lower end of the inner sealing cover and in contact with the inner wall of the oil inlet pipe, and the outer wall of the inner sealing ring being fixedly installed on the inner wall of the oil inlet pipe, thus constructing a double sealing structure that prevents oil leakage from the joint gap and isolates external impurities from entering, ensuring sealing reliability.

[0011] Preferably, the outer diameter of the outer sealing ring is smaller than the inner diameter of the annular plate to prevent the annular plate from blocking the outer sealing ring, ensuring that the outer sealing ring can be smoothly engaged with the outer sealing cover without interfering with the normal assembly of the sealing assembly.

[0012] This invention provides an oil inlet connector for a hydraulic cylinder. This oil inlet connector for a hydraulic cylinder has the following advantages: 1. This hydraulic cylinder inlet connector, relying on the deformation characteristics of elastic components, combined with a suitable annular space and anti-jamming structure, can quickly connect and disconnect the connector without additional tools; at the same time, it can reduce the frictional resistance between components, avoid assembly jamming, simplify the operation steps, and reduce the difficulty and time consumption of connector disassembly and assembly.

[0013] 2. The oil inlet connector of this cylinder, through the cooperation of the inner and outer double sealing structure, can effectively prevent oil leakage from the connector gap, while isolating external impurities from entering the connector, ensuring the cleanliness of the oil and the safety of use; and the sealing components are compatible with the dimensions of other components, so as not to interfere with normal assembly, taking into account both sealing stability and assembly smoothness. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall three-dimensional structure of an oil cylinder inlet connector according to the present invention; Figure 2 This is a cross-sectional view of the mounting cover in the oil inlet connector of a hydraulic cylinder according to the present invention. Figure 3 This utility model relates to an oil cylinder inlet connector. Figure 2 Enlarged structural diagram at point A in the diagram; Figure 4 This utility model relates to an oil cylinder inlet connector. Figure 1 A cross-sectional structural diagram.

[0015] In the diagram: 1. Oil inlet pipe; 2. Connecting pipe; 3. Mounting cover; 4. Annular plate; 5. Fixing ring; 6. Elastic retaining block; 7. Annular groove; 8. Outer sealing cover; 9. Outer sealing ring; 10. Inner sealing cover; 11. Inner sealing ring. Detailed Implementation

[0016] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.

[0017] like Figure 1-4 As shown, this utility model provides a technical solution: a hydraulic cylinder inlet connector, including an inlet pipe 1 and a connecting pipe 2. The inner wall of the inlet pipe 1 is slidably fitted with the outer wall of the connecting pipe 2. An installation cover 3 is fixedly fitted on the outer wall of the connecting pipe 2. A fixing ring 5 is fixedly fitted with the outer wall of the inlet pipe 1 inside the installation cover 3. An elastic locking block 6 is fixedly installed on the inner wall of the installation cover 3 in contact with the bottom surface of the fixing ring 5. The elastic locking block 6 is made of elastic sheet material. The upper edge of the fixing ring 5 has rounded corners to reduce the frictional resistance between the fixing ring 5 and the elastic locking block 6, ensuring smooth installation, avoiding jamming, and reducing assembly difficulty. The inner wall of the lower end of the installation cover 3 has an annular groove 7 larger than the size of the elastic locking block 6 to provide deformation space for the elastic locking block 6. During disassembly and assembly, the elastic locking block 6 can retract or reset smoothly, facilitating quick separation or docking of the inlet pipe 1 and the connecting pipe 2. An annular plate 4 is fixedly installed on the inner wall of the installation cover 3. The bottom surface of the annular plate 4 contacts the top surface of the fixing ring 5. A sealing assembly is provided between the connecting pipe 2 and the oil inlet pipe 1. The sealing assembly includes an outer sealing ring 9 fixedly sleeved on the outer wall of the oil inlet pipe 1. The outer diameter of the outer sealing ring 9 is smaller than the inner diameter of the annular plate 4 to prevent the annular plate 4 from blocking the outer sealing ring 9 and to ensure that the outer sealing ring 9 can be smoothly engaged with the outer sealing cover 8 without interfering with the normal assembly of the sealing assembly. The outer sealing ring 9 is engaged with the outer sealing cover 8, which is sleeved on the outer wall of the upper end of the oil inlet pipe 1. The outer sealing cover 8 is fixedly installed on the outer wall of the connecting pipe 2. An inner sealing cover 10 is fixedly installed at the bottom end of the connecting pipe 2. The lower end of the inner sealing cover 10 is engaged with an inner sealing ring 11 that contacts the inner wall of the oil inlet pipe 1. The outer wall of the inner sealing ring 11 is fixedly installed on the inner wall of the oil inlet pipe 1, thus constructing a double sealing structure that prevents oil leakage from the joint gap and isolates external impurities from entering, ensuring the reliability of the seal.

[0018] During use and assembly, the oil inlet connector of this hydraulic cylinder is slidably fitted with the inner wall of the oil inlet pipe 1 and the outer wall of the connecting pipe 2. The mounting cover 3, fixed to the outer wall of the connecting pipe 2, moves downwards accordingly. The elastic locking block 6 inside the mounting cover 3 contacts the fixing ring 5 on the outer wall of the oil inlet pipe 1. Because the upper edge of the fixing ring 5 has rounded corners, the elastic locking block 6, after being compressed, retracts into the annular groove 7 on the lower inner wall of the mounting cover 3, which is larger than its size. When the fixing ring 5 moves upwards and contacts the bottom surface of the annular plate 4 on the inner wall of the mounting cover 3, the elastic locking block 6 resets and locks the bottom surface of the fixing ring 5, completing the oil inlet process. The oil pipe 1 is connected to the connecting pipe 2; at the same time, the outer sealing cover 8 on the outer wall of the connecting pipe 2 is engaged with the outer sealing ring 9 on the outer wall of the oil inlet pipe 1, and the inner sealing cover 10 at the bottom of the connecting pipe 2 is engaged with the inner sealing ring 11 on the inner wall of the oil inlet pipe 1, forming a double seal inside and outside to prevent oil leakage and the entry of external impurities; when disassembling, the mounting cover 3 is pulled in the opposite direction, the elastic block 6 retracts to the annular groove 7 again, and the fixing ring 5 disengages from the elastic block 6, so that the oil inlet pipe 1 and the connecting pipe 2 can be separated, realizing the dual functions of convenient disassembly and assembly and reliable sealing.

[0019] The above description is merely an illustrative embodiment of this utility model and is not intended to limit the scope of this utility model. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of this utility model should fall within the protection scope of this utility model. Furthermore, it should be noted that the components of this utility model are not limited to the overall application described above. Each technical feature described in the specification of this utility model can be used individually or in combination as needed. Therefore, this utility model naturally covers other combinations and specific applications related to the points of this utility model.

Claims

1. A hydraulic cylinder inlet connector, comprising an inlet pipe (1) and a connecting pipe (2), characterized in that: The inner wall of the oil inlet pipe (1) is slidably fitted with the outer wall of the connecting pipe (2). The outer wall of the connecting pipe (2) is fixedly fitted with an installation cover (3). The interior of the installation cover (3) is provided with a fixing ring (5) that is fixedly fitted with the outer wall of the oil inlet pipe (1). The bottom surface of the fixing ring (5) is contacted with an elastic locking block (6) that is fixedly installed with the inner wall of the installation cover (3). A sealing component is provided between the connecting pipe (2) and the oil inlet pipe (1).

2. The hydraulic cylinder inlet connector according to claim 1, characterized in that: The inner wall of the lower end of the mounting cover (3) is provided with an annular groove (7) larger than the size of the elastic block (6).

3. The hydraulic cylinder inlet connector according to claim 1, characterized in that: The upper edge of the fixing ring (5) has a rounded corner.

4. The hydraulic cylinder inlet connector according to claim 1, characterized in that: The elastic card block (6) is made of elastic sheet material.

5. The hydraulic cylinder inlet connector according to claim 1, characterized in that: The inner wall of the mounting cover (3) is fixedly installed with an annular plate (4), and the bottom surface of the annular plate (4) is in contact with the top surface of the fixing ring (5).

6. The hydraulic cylinder inlet connector according to claim 1, characterized in that: The sealing assembly includes an outer sealing ring (9) fixedly sleeved on the outer wall of the oil inlet pipe (1), and an outer sealing cover (8) sleeved on the outer wall of the upper end of the oil inlet pipe (1). The outer sealing cover (8) is fixedly installed on the outer wall of the connecting pipe (2). An inner sealing cover (10) is fixedly installed at the bottom end of the connecting pipe (2). An inner sealing ring (11) is sleeved on the lower end of the inner sealing cover (10) and is in contact with the inner wall of the oil inlet pipe (1). The outer wall of the inner sealing ring (11) is fixedly installed on the inner wall of the oil inlet pipe (1).

7. The hydraulic cylinder inlet connector according to claim 6, characterized in that: The outer diameter of the outer sealing ring (9) is smaller than the inner diameter of the annular plate (4).

Images