Special-shaped O-shaped sealing ring and universal circular connector female end connecting structure
By using a non-circular O-ring seal and a universal circular connector female end structure, the problems of long design cycle and high cost in the existing technology are solved, and multi-point sealing connection and long-lasting sealing effect between the male and female ends are achieved, which meets the market demand for rapid updates in electronic products.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-03
- Publication Date
- 2026-03-06
AI Technical Summary
The design of the male and female ends of existing circular connectors requires simultaneous changes to the structure and production molds, resulting in long product design cycles, high costs, and difficulty in adapting to the rapidly evolving market demands of electronic products.
It adopts a special-shaped O-ring seal and a universal circular connector female end structure, designed as an L-shaped structure with first and second protrusions, which can be matched with threaded and snap-fit male ends respectively, and fixed by internal threads and grooves. Combined with the stepped structure of the female end shielding ring, it realizes the fastening, shielding and sealing connection between the male end and the female end.
It achieves multi-point sealing connection between the male and female ends, increases the sealing contact area, provides a raised deformation space, ensures a long-lasting sealing effect without pulling on other sealing surfaces, reduces design and production cycles, and lowers costs.
Smart Images
Figure CN223978248U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of circular connector technology, and in particular to irregular O-ring seals and a universal circular connector female end connection structure. Background Technology
[0002] Circular connectors typically use threaded or push-pull structures for locking connections between their male and female ends. Both mating male and female ends are designed with matching threaded or snap-fit structures. Any change to one of these structures necessitates simultaneous modifications to the structural design and manufacturing molds of the other end, sometimes even requiring changes to the assembly process. Therefore, the product development cycle from design to mass production is lengthy and costly. However, with the increasingly rapid pace of electronic product updates, conventional design and production methods are no longer sufficient to meet market demands. Utility Model Content
[0003] To address the problems existing in the prior art, this utility model provides a non-circular O-ring seal and a universal circular connector female end connection structure. The connector female end can be mated with threaded and snap-fit male ends respectively to fix it on the female end, and can realize the fastening, shielding and sealing connection between the male end and the female end.
[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0005] An irregular O-ring seal has an L-shaped cross-section and includes an integrally formed longitudinal arm and a transverse arm arranged vertically. The longitudinal arm extends axially, and a first protrusion is formed on its inner side away from the transverse arm. The outer wall of the first protrusion is arc-shaped and smoothly connected to the end of the longitudinal arm. The transverse arm extends radially, and a second protrusion is formed on its end away from the longitudinal arm. The outer wall of the second protrusion is arc-shaped and smoothly connected to both the outer and inner walls of the transverse arm. The first protrusion, the second protrusion, and the inner wall of the irregular O-ring seal form an end-to-end clearance groove.
[0006] One technical solution adopted by this utility model is as follows:
[0007] A universal circular connector female end connection structure includes a female end core with two or more female terminals embedded in it. A female end shielding ring is sleeved around the female end core. A non-circular O-ring seal as described in the above technical solution is embedded on the inner wall of the female end shielding ring. The longitudinal arm of the non-circular O-ring seal abuts against the inner wall of the female end shielding ring, and the outer wall of the transverse arm abuts against the end of the female end core. The first protrusion and the second protrusion can both abut against the positioning structure of the male end of the connector and / or the male end shielding ring and / or the male end core. An internal thread and a groove are sequentially provided on the inner wall of the female end shielding ring outside the first protrusion. The internal thread can be adapted to the external thread of the male end of the connector, and the groove can be adapted to the locking protrusion of the male end of the connector. A positioning thread for connecting and fixing the female end of the connector is formed on the outer wall of the female end shielding ring.
[0008] As a further explanation of the above technical solution:
[0009] In the above technical solution, the outer wall of the female end rubber core and the inner wall of the female end shielding ring are both matching stepped structures. A radially extending limiting groove and an axially extending guide groove are formed on the outer wall of the female end rubber core. The guide groove is adapted to the male end rubber core, and the limiting groove is adapted to the first protrusion on the inner wall of the female end shielding ring.
[0010] In the above technical solution, the female end shielding ring has a second protrusion formed on the axial side of the positioning thread, and an outer sealing ring is installed on the side wall of the second protrusion facing the male end of the connector.
[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: The internal threads and grooves on the female shielding ring allow for engagement with threaded and snap-fit male ends to fix the male end onto the female end. When the male and female shielding rings are abutted or overlapped and assembled in place, the connection between the male and female ends is sealed by the shaped O-ring, achieving a tight, shielding, and sealing connection. By designing the shaped O-ring as an L-shaped structure and providing a first and second protrusion on its two walls, five planar sealing end faces can be formed on the sealing ring. This allows for a large-area fit against the part to be sealed during use, while also providing ample clearance for the deformation of the first and second protrusions, preventing or minimizing pulling on other sealing surfaces during deformation, resulting in a superior and more durable sealing effect. Attached Figure Description
[0012] Figure 1 This is a half-section structural diagram of the irregular O-ring seal in this embodiment;
[0013] Figure 2 This is an exploded structural diagram of the female connector end in this embodiment;
[0014] Figure 3This is a cross-sectional view of the structure after assembly with the male end of the buckle in this embodiment;
[0015] Figure 4 This is a cross-sectional view of the structure after assembly with the threaded male end in this embodiment.
[0016] In the diagram: 10. Irregular O-ring seal; 11. Longitudinal arm; 12. Lateral arm; 20. Female terminal; 30. Female end core; 31. Limiting groove; 32. Guide groove; 40. Female end shielding ring; 41. Internal thread; 42. Slot; 43. Positioning thread; 44. First protrusion; 45. Second protrusion; 50. Male end shielding ring; 60. Male end core; 70. Outer sealing ring; 80. Male end positioning structure; 1. First protrusion; 2. Second protrusion; 3. Clearance groove; 4. External thread; 5. Slot protrusion. Detailed Implementation
[0017] The present invention will now be described in further detail with reference to the accompanying drawings.
[0018] The embodiments described with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. In the description of this application, 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," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application 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, and therefore should not be construed as limiting this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "several" or "more than" means two or more, unless otherwise explicitly specified. In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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 application according to the specific circumstances. In this application, unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of a second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of a second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0019] like Figure 1As shown, the irregular O-ring seal 10 has an L-shaped cross-section and includes an integrally formed and vertically arranged longitudinal arm 11 and transverse arm 12. The longitudinal arm 11 extends axially, and a first protrusion 1 is formed on its inner side away from the transverse arm 12. The outer wall of the first protrusion 1 is arc-shaped and smoothly connected to the end of the longitudinal arm 11. The transverse arm 12 extends radially, and a second protrusion 2 is formed on its end away from the longitudinal arm 11. The outer wall of the second protrusion 2 is arc-shaped and smoothly connected to both the outer and inner walls of the transverse arm 12. The first protrusion 1, the second protrusion 2 and the inner wall of the irregular O-ring seal 10 form a gap 3 that is connected end to end.
[0020] It is understood that the irregular O-ring 10 of this invention can form five sealing end faces: the outer wall of the longitudinal arm 12 and its two end faces, the side top face of the first protrusion 1, and the side top face of the second protrusion 2. Moreover, the L-shaped structure of this invention makes the upper and lower end faces of the sealing ring flat, so that its upper and lower end faces and outer wall can fit against the part to be sealed over a large area during use. In contrast, the upper and lower end faces and even the outer wall of conventional O-rings are curved, with at most four sealing surfaces and a small contact area for each sealing surface during use. Therefore, compared with the curved surface structure of conventional O-rings of the same outer contour size, this invention has more sealing surfaces and sealing contact area, resulting in a better sealing effect. At the same time, the design of the clearance groove 3 on the inner wall of this invention provides a large clearance space for the deformation of the first protrusion 1 and the second protrusion 2, and its deformation will not or will pull other sealing surfaces less, ensuring that all sealing surfaces are completely in contact with the part to be sealed, resulting in a continuous sealing effect.
[0021] A specific application example of the above embodiments is as follows:
[0022] like Figure 2As shown, the universal circular connector female end connection structure includes a female end core 30 with two or more female terminals 20 embedded in it. A female end shielding ring 40 is sleeved around the female end core 30. A special-shaped O-ring 10 of the above embodiment is embedded on the inner wall of the female end shielding ring 40. The longitudinal arm 11 of the special-shaped O-ring 10 abuts against the inner wall of the female end shielding ring 40, and the outer wall of the transverse arm 12 abuts against the end of the female end core 30. The first protrusion 1 and the second protrusion 2 can both abut against the positioning structure 80 of the male end of the connector and / or the male end shielding ring 50 and / or the male end core 60. An internal thread 41 and a groove 42 are sequentially provided on the outer side of the first protrusion 1 on the inner wall of the female end shielding ring 40. The internal thread 41 can be adapted to the external thread 4 on the positioning structure of the male end of the connector, and the groove 42 can be adapted to the locking protrusion 5 on the positioning structure of the male end of the connector. A positioning thread 43 for connecting and fixing the female end of the connector is formed on the outer wall of the female end shielding ring 40. In this embodiment, the outer wall of the female end core 30 and the inner wall of the female end shielding ring 40 are both matching stepped structures. A radially extending limiting groove 31 and an axially extending guide groove 32 are formed on the outer wall of the female end core 30. The guide groove 32 is adapted to the male end core 60, and the limiting groove 31 is adapted to the first protrusion 44 on the inner wall of the female end shielding ring 40. A second protrusion 45 is formed on the axial side of the positioning thread 43 of the female end shielding ring 40. An outer sealing ring 70 is installed on the side wall of the second protrusion 45 facing the male end of the connector.
[0023] It is understood that the internal thread 41 and the groove 42 on the female end shielding ring 40 in this utility model can respectively cooperate with the threaded and snap-fit male ends to fix the male end on the female end. When the male end shielding ring 50 and the female end shielding ring 40 abut or overlap together and are assembled in place, the heterogeneous O-ring seal 10 can seal the connection between the male end and the female end.
[0024] Figure 3 The diagram shows a cross-sectional view of the male end of the circular connector after assembly with the push-pull snap-fit structure of this utility model. It can be seen that the positioning structure 80 of the male end is sleeved between the male end shielding ring 50 and the male end core 60. When the male and female ends are plugged in and fastened, the snap-fit protrusion 5 on it is engaged in the slot 42 on the inner wall of the female end shielding shell 40 to achieve a snap-fit connection and fixation between the male and female ends. At the same time, the end of the positioning structure 80 extends to the outside of the male end core 60 and abuts against the second protrusion 2 of the irregular O-ring seal 10 together with it. Meanwhile, the first protrusion 1 abuts against the side wall of the positioning structure 80, so that the male and female ends are fastened and positioned, and the irregular O-ring seal 10 provides multi-point and multi-layer sealing. When the male end of the connector is pushed and pulled axially, the second protrusion 2 and the transverse arm 12 protect the female end core 30 and reduce the pushing force of the male end shielding ring 50 on the female end shielding ring 40, so as to achieve the fastening, shielding and sealing connection between the male end and the female end.
[0025] Figure 4The diagram shows a cross-sectional view of the present invention after assembly with the male end of a threaded circular connector. It can be seen that the outer wall of the male end shielding ring 50 extends to the periphery of the end of the male end core 60, and is provided with an external thread 4. During assembly, the external thread 4 cooperates with the internal thread 41 on the inner wall of the female end shielding ring 40 to screw the male end into the female end until the end of the male end core 60 abuts against the second protrusion 2 of the irregular O-ring seal 10. At the same time, the first protrusion 1 can seal the end of the male end shielding ring 50, realizing the locking, shielding and sealing connection between the male end and the female end.
[0026] The above does not limit the technical scope of this utility model. Any modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this utility model shall still fall within the scope of the technical solution of this utility model.
Claims
1. A profiled O-ring seal, characterised in that: The cross section of the profiled O-shaped sealing ring is L-shaped structure, comprising a longitudinal arm and a transverse arm which are integrally formed and vertically arranged: the longitudinal arm extends axially, and a first protrusion is formed on the inner side of the transverse arm away from the longitudinal arm, the outer wall of the first protrusion is arc-shaped and smoothly connected with the end of the longitudinal arm; the transverse arm extends radially, and a second protrusion is formed on the end of the longitudinal arm away from the transverse arm, the outer wall of the second protrusion is arc-shaped and smoothly connected with the outer wall and the inner wall of the transverse arm, and a continuous empty slot is formed between the first protrusion, the second protrusion and the inner wall of the profiled O-shaped sealing ring.
2. A female connection structure of a general-purpose round connector, comprising a female rubber core in which two or more female terminals are embedded; characterized by, The outer wall of the female core is sleeved with a female shielding ring, and the inner wall of the female shielding ring is embedded with the profiled O-shaped sealing ring as claimed in claim 1, the longitudinal arm of the profiled O-shaped sealing ring abuts against the inner wall of the female shielding ring, the outer wall of the transverse arm abuts against the end of the female core, the first protrusion and the second protrusion can abut against the positioning structure of the male connector, the male shielding ring and / or the male core, the inner wall of the female shielding ring is sequentially provided with an internal thread and a clamping groove outside the first protrusion, the internal thread can be matched with the external thread of the male connector, and the clamping groove can be matched with the clamping protrusion of the male connector, and the outer wall of the female shielding ring is formed with a positioning thread for connecting and fixing the female connector.
3. The female connection structure of the universal round connector according to claim 2, characterized by, The outer wall of the female core and the inner wall of the female shielding ring are both matched with stepped structure, the outer wall of the female core is formed with a radial extending limiting groove and an axial extending guide groove, the guide groove is matched with the male core, and the limiting groove is matched with the first protrusion on the inner wall of the female shielding ring.
4. The female connection structure of the universal round connector according to claim 2, wherein The female shielding ring is formed with a second protrusion on the axial side of the positioning thread, and an external sealing ring is arranged on the side wall of the male connector towards the second protrusion.