A core sealing mechanism

Abstract

The utility model provides a kind of core sealing mechanism, the radial outer wall of core body is provided with outwardly extending anti-pulling structure and inwardly extending sealing groove of inverted trapezoidal, anti-pulling structure and sealing groove are sequentially arranged between the head end to tail end in the length direction of core body;The radial inner side of sleeve is provided with sealing inner tooth and anti-pulling inner tooth, sealing inner tooth is set correspondingly sealing groove, inner tooth is configured as can extrude the inner rubber of hose to sealing groove and form the sealing structure of ring type.The core sealing mechanism, by increasing sealing groove and anti-pulling tooth at the buckling sealing place of core, sleeve can extrude the inner rubber of hose in sealing groove after buckling, to form O-ring sealing structure, while the inner side of sleeve is provided with inner tooth tightly buckling anti-pulling structure, prevent hose misplacement and pulling, prevent the oil leakage phenomenon and pulling risk at buckling place, improve the service life of hose.

Description

Technical Field

[0001] This utility model relates to the field of core sealing technology, and in particular to a core sealing mechanism. Background Technology

[0002] As a key connecting component in hydraulic systems for transmitting power and working media, the performance and reliability of hose assemblies directly affect the overall system's operating efficiency and safety. Currently, hose assemblies are generally assembled using a crimping process, which involves radially crimping the sleeve and core to tightly fix the hose to the outside of the core, achieving connection and sealing.

[0003] The aforementioned prior art has the following drawbacks:

[0004] The main failure of existing hose assemblies is oil leakage at the crimping point. This problem not only leads to hydraulic oil leakage, causing environmental pollution and energy waste, but also reduces system efficiency and may even cause abnormal equipment shutdowns or safety accidents, seriously affecting production continuity. In addition, existing hose assemblies rely on the sleeve to compress the hose as a whole. Its sealing effect is limited by the consistency of material deformation and the accuracy of crimping pressure control. There are deficiencies in anti-pull-out design and sealing redundancy. The sleeve's internal tooth shape is simple and it is difficult to effectively form a durable and reliable sealing barrier under high pressure and pulse conditions. The hose and core are prone to fretting wear or relative displacement due to vibration and impact, which leads to damage to the sealing interface.

[0005] Therefore, in order to solve the above problems, this utility model proposes a core sealing mechanism that can improve sealing performance and has a certain resistance to pull-out. Utility Model Content

[0006] To address the problems existing in the prior art, this utility model provides a core sealing mechanism.

[0007] According to one objective of this utility model, this utility model provides a core sealing mechanism, wherein the sealing mechanism is provided with an installation direction, and the two sides of the installation direction are respectively the installation side and the pull-out side;

[0008] The sealing mechanism includes a core body arranged along the installation direction, and a hose and a sleeve are sequentially sleeved on the radial outer side of the core body from the inside to the outside. The sleeve is configured to press the hose against the radial outer side of the core body.

[0009] The outer radial wall of the core body is provided with an outwardly extending anti-pull-out structure and an inwardly extending inverted trapezoidal sealing groove. The anti-pull-out structure and the sealing groove are arranged sequentially from the head end to the tail end in the length direction of the core body. The sealing groove is continuously arranged around the circumference of the core body. The angle between the side of the anti-pull-out structure facing the head end of the core body and the radial direction of the core body is smaller than the angle between the side of the sealing groove facing the head end of the core body and the radial direction of the core body.

[0010] The sleeve has a plurality of internal teeth on its radial inner side. The internal teeth are divided into sealing internal teeth and anti-pull-out internal teeth. The sealing internal teeth are arranged corresponding to the sealing groove. The internal teeth are configured to squeeze the inner rubber of the hose into the sealing groove to form a ring-shaped sealing structure. The anti-pull-out internal teeth are arranged on the head end side of the anti-pull-out structure near the core body.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This core sealing mechanism adds a sealing groove and anti-pull-out teeth to the core's crimping seal. After crimping, the sleeve can squeeze the inner rubber of the hose into the sealing groove, thereby forming an O-ring sealing structure. At the same time, the inner side of the sleeve is equipped with an internal toothed anti-pull-out structure to prevent hose misalignment and pull-out, prevent oil leakage at the crimping point and the risk of pull-out, and improve the service life of the hose.

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0014] Figure 1 This is an overall schematic diagram of the core sealing mechanism described in this utility model;

[0015] Figure 2 This is a schematic diagram of the core body in the core sealing mechanism described in this utility model;

[0016] Figure 3 This is a schematic diagram of the sealing groove in the core sealing mechanism described in this utility model. Detailed Implementation

[0017] The following description is intended to provide a detailed account of the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0018] Please see Figure 1-3This utility model provides a technical solution: a core sealing mechanism, wherein the sealing mechanism is provided with an installation direction, and the two sides of the installation direction are respectively the installation side and the pull-out side;

[0019] The sealing mechanism includes a core body 1 arranged along the installation direction. A flexible tube 4 and a sleeve 5 are sequentially sleeved on the radial outer side of the core body 1 from the inside to the outside. The sleeve 5 is configured to press the flexible tube 4 against the radial outer side of the core body 1.

[0020] The outer radial wall of the core body 1 is provided with an outwardly extending anti-pull-out structure 3 and an inwardly extending inverted trapezoidal sealing groove 2. The anti-pull-out structure 3 and the sealing groove 2 are arranged sequentially from the head end to the tail end in the length direction of the core body 1. The sealing groove 2 is continuously arranged around the circumference of the core body 1. The angle between the anti-pull-out structure 3 and the radial direction of the core body 1 is smaller than the angle between the sealing groove 2 and the radial direction of the core body 1.

[0021] The sleeve 5 has a plurality of internal teeth on its radial inner side. The internal teeth are divided into sealing internal teeth 6 and anti-pull-out internal teeth 8. The sealing internal teeth 6 are provided corresponding to the sealing groove 2. The internal teeth are configured to squeeze the inner rubber of the hose 4 into the sealing groove 2 to form a ring-shaped sealing structure. The anti-pull-out internal teeth 8 are provided on the anti-pull-out structure 3 near the head end of the core body 1.

[0022] By adding a sealing groove 2 and anti-pull-out teeth to the crimping seal of the core, the sleeve 5 can squeeze the inner rubber of the hose 4 into the sealing groove 2 after crimping, thereby forming an O-ring sealing structure. At the same time, the inner side of the sleeve 5 is provided with an inner toothed anti-pull-out structure 3 to prevent the hose 4 from being misaligned and pulled out, prevent oil leakage at the crimping point and the risk of pull-out, and improve the service life of the hose 4.

[0023] Furthermore, the sealing groove 2 is an isosceles trapezoid, and the angle between the side of the anti-pull-out structure 3 facing the head end of the core body 1 and the radial direction of the core body 1 is not less than 0°. By defining the shapes of the sealing groove 2 and the anti-pull-out structure 3, the trapezoidal inner side of the sealing groove 2 can cooperate with the internal teeth to pressurize the inner rubber of the hose 4, thereby forming a sealing structure with better sealing performance. By defining the angle of the working surface of the anti-pull-out structure 3, this side can provide greater resistance when cooperating with the internal teeth to achieve the anti-pull-out effect. Furthermore, the upper end of the anti-pull-out structure 3 is not lower than the upper end of the sealing groove 2; preferably, the upper end of the anti-pull-out structure 3 is higher than the upper end of the sealing groove 2.

[0024] Furthermore, there are multiple sealing grooves 2, which are arranged sequentially at intervals along the length of the core body 1, and the sealing inner teeth 6 correspond one-to-one. The multiple sealing grooves 2 can cooperate with the inner teeth to form a multi-layered sealing structure in the installation direction of the inner rubber of the hose 4, thereby improving the sealing effect.

[0025] In this embodiment, there is one anti-pull-out structure 3 and four sealing grooves 2. The sidewall of each sealing groove 2 is an inclined surface, and the angle between the inclined surface and the radial direction of the core body 1 is 60°. The depth of the sealing groove 2 is 0.5-0.6 mm. The angle between the side of the anti-pull-out structure 3 facing the head end of the core body 1 and the radial direction of the core body 1 is 0°. If the core body 1 is set horizontally, the angle between the side of the anti-pull-out structure 3 facing the head end of the core body 1 and the horizontal plane is 90°.

[0026] To further improve the stability and sealing performance of the connection between the sleeve and the core body 1, an outer limiting groove 111 is provided on the radial outer side of the core body 1 near the head end, and an inner limiting groove 511 protruding inward is provided on the sleeve 5. The outer limiting groove 111 and the inner limiting groove 511 engage with each other. Specifically, the outer radial side of the core body 1 is provided with a plurality of external clamping teeth 11 arranged sequentially along the length direction of the core body 1, and the inner radial side of the sleeve 5 is provided with a plurality of internal clamping teeth 51 arranged sequentially along the length direction of the core body 1. The internal clamping teeth 51 are located on the mounting side of the internal teeth, and the external clamping teeth 11 are located on the mounting side of the anti-pull-out structure 3. The opposite sides of adjacent external clamping teeth 11 form an outer limiting groove 111, and the opposite sides of adjacent internal clamping teeth 51 form an inner limiting groove 511. The internal clamping teeth 51 located on the mounting side are engaged with the inner side of the outer limiting groove 111, and the external clamping teeth 11 located on the pull-out side are engaged with the inner side of the inner limiting groove 511. Preferably, both the inner clamping teeth 51 and the outer clamping teeth 11 are made of rubber, and their positions correspond to form a cross seal, creating a new sealing body. In this embodiment, there are two inner clamping teeth 51 and two outer clamping teeth 11.

[0027] Furthermore, to facilitate the quick and accurate application of the hose 4 onto the core body 1, a guide portion 7 is provided on the core body 1. The guide portion 7 is located on the pull-out side of the sealing groove 2, and the radial cross-sectional dimension of the guide portion 7 gradually decreases towards the pull-out side of the core body 1. Specifically, the radially outer surface of the guide portion 7 is a slope, and the radially outer surface of the guide portion 7 is inclined to form a guide angle.

[0028] To improve the ease of installation of the sleeve 5, the inner radial surface of the sleeve 5 is provided with anti-slip texture, so as to facilitate the installation of the sleeve 5 from the outside of the sleeve 5 in conjunction with the anti-slip texture. It should be noted that the sleeve 5 is made of flexible material, preferably rubber.

[0029] How to use:

[0030] The hose 4 is sleeved on the outside of the core body 1 through the pull-out side end of the core body 1, wherein the outer slope of the guide part 7 provides guidance, and the hose 4 is mounted on the pull-out side end of the outer clamping tooth 11.

[0031] The sleeve 5 is fitted and snapped onto the outside of the hose 4. The sleeve 5 can be fitted onto the radial outside of the hose 4 before the hose 4 is installed. The inner snapping teeth 51 on the installation side of the sleeve 5 and the outer snapping teeth 11 on the core body 1 are engaged. The anti-pull-out inner teeth 8 and the anti-pull-out structure 3 on the inner side of the sleeve 5 squeeze the hose 4 to prevent the hose 4 from being misaligned or pulled out. The sealing inner teeth 6 squeeze the inner rubber of the hose 4 into the sealing groove 2 to form a multi-seal structure, thus completing the installation of the sealing structure.

[0032] In summary, this sealing structure, by adding a sealing groove 2 and anti-pull-out teeth at the crimping seal of the core, allows the sleeve 5 to squeeze the inner rubber of the hose 4 into the sealing groove 2 after crimping, thereby forming an O-ring seal structure. At the same time, the inner side of the sleeve 5 is provided with an internal toothed anti-pull-out structure 3 to prevent the hose 4 from being misaligned or pulled out, preventing oil leakage at the crimping point and the risk of pull-out, thus improving the service life of the hose 4. It has great technical potential and broad market application prospects in both high-tech industries and traditional industries.

[0033] The embodiments described above are only used to illustrate the technical ideas and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. The scope of patent application of this utility model should not be limited by these embodiments. That is, any equivalent changes or modifications made in accordance with the spirit disclosed in this utility model still fall within the patent scope of this utility model.

Claims

1. A core sealing mechanism, characterized in that, The sealing mechanism is provided with an installation direction, and the two sides of the installation direction are the installation side and the pull-out side, respectively. The sealing mechanism includes a core body (1) arranged along the installation direction. A flexible tube (4) and a sleeve (5) are sequentially sleeved on the radial outer side of the core body (1) from the inside to the outside. The sleeve (5) is configured to press the flexible tube (4) against the radial outer side of the core body (1). The outer radial wall of the core body (1) is provided with an outwardly extending anti-pull-out structure (3) and an inwardly extending inverted trapezoidal sealing groove (2). The anti-pull-out structure (3) and the sealing groove (2) are arranged sequentially from the head end to the tail end in the length direction of the core body (1). The sealing groove (2) is continuously arranged around the circumference of the core body (1). The angle between the anti-pull-out structure (3) facing the head end of the core body (1) and the radial direction of the core body (1) is smaller than the angle between the sealing groove (2) facing the head end of the core body (1) and the radial direction of the core body (1). The sleeve (5) has several internal teeth on its radial inner side. The internal teeth are divided into sealing internal teeth (6) and anti-pull-out internal teeth (8). The sealing internal teeth (6) are arranged corresponding to the sealing groove (2). The internal teeth are configured to squeeze the inner rubber of the hose (4) into the sealing groove (2) to form a ring-shaped sealing structure. The anti-pull-out internal teeth (8) are arranged on the anti-pull-out structure (3) near the head end of the core body (1).

2. The core sealing mechanism according to claim 1, characterized in that, The sealing groove (2) is an isosceles trapezoid, and the angle between the anti-pull-out structure (3) facing the head end of the core body (1) and the radial direction of the core body (1) is not less than 0°.

3. A core sealing mechanism according to claim 1, characterized in that, The upper end of the anti-pull-out structure (3) is not lower than the upper end of the sealing groove (2).

4. A core sealing mechanism according to claim 1, characterized in that, The number of sealing grooves (2) is multiple, and the sealing grooves (2) are arranged sequentially at intervals along the length direction of the core body (1), and the sealing inner teeth (6) correspond one to one.

5. A core sealing mechanism according to claim 4, characterized in that, The number of the anti-pull-out structure (3) is 1, the number of the sealing groove (2) is 4, and the side wall of each sealing groove (2) is a slope. The angle between the slope and the radial direction of the core body (1) is 60°. The depth of the sealing groove (2) is 0.5-0.6mm. The angle between the side of the anti-pull-out structure (3) facing the head end of the core body (1) and the radial direction of the core body (1) is 0°.

6. A core sealing mechanism according to claim 1, characterized in that, The outer side of the core body (1) is provided with an outer limiting groove (111) near the head end, and the sleeve (5) is provided with an inner limiting groove (511) protruding inward. The outer limiting groove (111) and the inner limiting groove (511) engage with each other.

7. A core sealing mechanism according to claim 6, characterized in that, The outer radial side of the core body (1) is provided with a plurality of external clamping teeth (11) arranged sequentially along the length direction of the core body (1), and the inner radial side of the sleeve (5) is provided with a plurality of internal clamping teeth (51) arranged sequentially along the length direction of the core body (1). The internal clamping teeth (51) are provided on the mounting side of the internal teeth, and the external clamping teeth (11) are provided on the mounting side of the anti-pull-out structure (3). The opposite sides of adjacent external clamping teeth (11) form the external limiting groove (111), and the opposite sides of adjacent internal clamping teeth (51) form the internal limiting groove (511). The inner clamping tooth (51) located on the mounting side is engaged with the inner side of the outer limiting groove (111), and the outer clamping tooth (11) located on the pulling side is engaged with the inner side of the inner limiting groove (511).

8. A core sealing mechanism according to claim 1, characterized in that, The inner surface of the sleeve (5) is provided with anti-slip texture.

9. A core sealing mechanism according to claim 1, characterized in that, The core body (1) is provided with a guide portion (7), which is located on the pull-out side of the sealing groove (2). The size of the radial cross section of the guide portion (7) gradually decreases as it approaches the pull-out side of the core body (1).

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