Special-shaped O-shaped sealing ring and universal circular connector female end connecting structure

Abstract

The invention discloses a special-shaped O-shaped sealing ring and a universal circular connector female end connecting structure, the cross section of the special-shaped O-shaped sealing ring is of an L-shaped structure, and the inner wall of a female end shielding ring is sequentially provided with the special-shaped O-shaped sealing ring, an internal thread and a clamping groove. According to the invention, the female end of the connector can be respectively matched with the threaded male end and the buckle male end to fix the male end on the female end, and the connection part of the male end and the female end can be sealed through the special-shaped O-shaped sealing ring, so that buckling, shielding and sealing connection of the male end and the female end can be realized; according to the special-shaped O-shaped sealing ring, the special-shaped O-shaped sealing ring is of the L-shaped structure, the first protrusion and the second protrusion are arranged on the two walls of the special-shaped O-shaped sealing ring respectively, five plane sealing end faces can be formed on the sealing ring, the sealing ring can be attached to a part to be sealed in a large area in the using process, and meanwhile a large avoiding space is provided for deformation of the first protrusion and the second protrusion; and other sealing surfaces cannot be pulled or are slightly pulled during deformation, so that a better and more durable sealing effect is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of circular connectors, and particularly to a special-shaped O-ring and a connecting structure for the female end of a general-purpose circular connector. Background Art

[0002] The male and female ends of circular connectors generally adopt a threaded or push-pull structure for locking connection. The paired male and female ends are designed with matching threaded structures or snap structures. If there is a change in any one of these structures, it is necessary to simultaneously change the structural design and production mold of the other end, and sometimes even change the assembly process. Therefore, the cycle from design to mass production of the product is relatively long, and the input cost is relatively high. However, the current update and iteration speed of electronic products is getting faster and faster, and the conventional design and production mode has been difficult to meet the market demand. Summary of the Invention

[0003] In view of the problems existing in the above-mentioned prior art, the present invention provides a special-shaped O-ring and a connecting structure for the female end of a general-purpose circular connector. The female end of the connector can be respectively matched with male ends of threaded and snap types to fix them 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 technical problems, a technical solution adopted by the present invention is as follows:

[0005] A special-shaped O-ring, the cross-section of which is an L-shaped structure, includes a longitudinal arm and a transverse arm that are integrally formed and vertically arranged: the longitudinal arm extends axially, and a first protrusion is formed on the inner arm away from the transverse arm. The outer wall of the first protrusion is an arc surface and is smoothly connected to the end of the longitudinal arm; the transverse arm extends radially, and a second protrusion is formed at the end away from the longitudinal arm. The outer wall of the second protrusion is an arc surface and is smoothly connected to both the outer wall and the inner wall of the transverse arm. A clearance groove that is connected end to end is formed between the first protrusion, the second protrusion, and the inner wall of the special-shaped O-ring.

[0006] A technical solution adopted by the present invention is as follows:

[0007] Universal circular connector female end connection structure, including a female end rubber core embedded with more than two female terminals. A female end shielding ring is sleeved around the periphery of the female end rubber core. The special-shaped O-ring seal described in the above technical solution is embedded on the inner wall of the female end shielding ring. The longitudinal arm of the special-shaped 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 rubber core. Both the first protrusion and the second protrusion can abut against the positioning structure of the male end of the connector and / or the male end shielding ring and / or the male end rubber core. On the inner wall of the female end shielding ring, an internal thread and a card slot are sequentially arranged outside the first protrusion. The internal thread can be adapted to the external thread of the male end of the connector, and the card slot can be adapted to the convex 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 elaboration 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 limiting groove extending radially and a guiding groove extending axially are formed on the outer wall of the female end rubber core. The guiding 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, a second protrusion is formed on the female end shielding ring beside the axial direction of the positioning thread. 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 the present invention are as follows: Through the internal thread and the card slot on the female end shielding ring, the male end can be fixed on the female end by cooperating with the threaded and snap-type male ends respectively. When the male end shielding ring and the female end shielding ring abut or overlap and are assembled in place, the connection between the male end and the female end can be sealed by the special-shaped O-ring seal, realizing the fastening, shielding and sealing connection between the male end and the female end. By setting the special-shaped O-ring seal as an L-shaped structure and respectively arranging the first protrusion and the second protrusion on its two walls, five plane sealing end faces can be formed on the seal, and it can be attached to the part to be sealed in a large area during use. At the same time, a large avoidance space is provided for the deformation of the first protrusion and the second protrusion, so that when it deforms, it will not or less pull other sealing surfaces, having a better and more durable sealing effect. Description of the Drawings

[0012] Figure 1 It is a schematic half-sectional structure diagram of the special-shaped O-ring seal in this embodiment;

[0013] Figure 2 It is a schematic exploded structure diagram of the female end of the connector in this embodiment;

[0014] Figure 3It is a schematic cross-sectional structure diagram after the assembly of this embodiment and the male snap end;

[0015] Figure 4 It is a schematic cross-sectional structure diagram after the assembly of this embodiment and the male threaded end.

[0016] In the figure: 10, special-shaped O-ring; 11, longitudinal arm; 12, transverse arm; 20, female terminal; 30, female terminal rubber core; 31, limiting groove; 32, guiding groove; 40, female terminal shielding ring; 41, internal thread; 42, clamping groove; 43, positioning thread; 44, first protrusion; 45, second protrusion; 50, male terminal shielding ring; 60, male terminal rubber core; 70, outer sealing ring; 80, male terminal positioning structure; 1, first protrusion; 2, second protrusion; 3, clearance groove; 4, external thread; 5, clamping protrusion. Specific embodiments

[0017] The present invention will be further described in detail below with reference to the accompanying drawings.

[0018] The embodiments described with reference to the accompanying drawings are exemplary and are intended to explain the present application, and should not be construed as limiting the present application. In the description of the present 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", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "several" and "multiple" is two or more, unless otherwise specifically and clearly defined. In the present application, unless otherwise clearly specified and limited, the terms such as "mounted", "connected", "connected to", "fixed" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application may be understood according to specific circumstances. In the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0019] As Figure 1As shown, the special-shaped O-ring seal 10 has an L-shaped cross-section, including a longitudinal arm 11 and a transverse arm 12 that are integrally formed and vertically arranged: the longitudinal arm 11 extends axially, and a first protrusion 1 is formed on the inner arm away from the transverse arm 12. The outer wall of the first protrusion 1 is an arc surface and is smoothly connected to the end of the longitudinal arm 11; the transverse arm 12 extends radially, and a second protrusion 2 is formed at the end away from the longitudinal arm 11. The outer wall of the second protrusion 2 is an arc surface and is smoothly connected to both the outer wall and the inner wall of the transverse arm 12. A clearance groove 3 that is connected end to end is formed between the first protrusion 1, the second protrusion 2 and the inner wall of the special-shaped O-ring seal 10.

[0020] It can be understood that five sealing end faces can be formed on the special-shaped O-ring seal 10 in the present invention, including 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 the present invention makes the upper and lower end faces of the seal ring flat. When in use, its upper and lower end faces and the outer wall can be in large-area contact with the component to be sealed. However, the upper and lower end faces and even the outer wall of the conventional O-ring seal are arc surfaces. When in use, there are at most four sealing surfaces and the contact area of each sealing surface is small. Therefore, compared with the arc surface structure of the conventional O-ring seal with the same outer contour size, the present invention has more sealing surfaces and a larger sealing contact area, and has a better sealing effect; at the same time, the design of the clearance groove 3 on the inner wall of the present invention provides a large avoidance space for the deformation of the first protrusion 1 and the second protrusion 2, and when it deforms, it will not or less pull other sealing surfaces, ensuring that all sealing surfaces are completely in contact with the component to be sealed, and having a continuous sealing effect.

[0021] A specific application example of the above embodiment is as follows:

[0022] Such as Figure 2As shown in the figure, a female connection structure of a general circular connector includes a female terminal core 30 embedded with two or more female terminals 20. A female shielding ring 40 is sleeved around the outer periphery of the female terminal core 30. The special-shaped O-ring 10 of the above-mentioned embodiment is embedded on the inner wall of the female shielding ring 40. The longitudinal arm 11 of the special-shaped O-ring 10 abuts against the inner wall of the female shielding ring 40, and the outer wall of the transverse arm 12 abuts against the end of the female terminal core 30. Both the first protrusion 1 and the second protrusion 2 can abut against the positioning structure 80 of the male connector and / or the male shielding ring 50 and / or the male terminal core 60. On the inner wall of the female shielding ring 40, an internal thread 41 and a card slot 42 are sequentially arranged outside the first protrusion 1. The internal thread 41 can be matched with the external thread 4 on the positioning structure of the male connector of the connector, and the card slot 42 can be matched with the card convex 5 on the positioning structure of the male connector 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 shielding ring 40. In this embodiment, the outer wall of the female terminal core 30 and the inner wall of the female shielding ring 40 are both matching stepped structures. A limiting groove 31 extending radially and a guiding groove 32 extending axially are formed on the outer wall of the female terminal core 30. The guiding groove 32 is adapted to the male terminal core 60, and the limiting groove 31 is adapted to the first protrusion 44 on the inner wall of the female shielding ring 40. A second protrusion 45 is formed on the female shielding ring 40 beside the axial direction of the positioning thread 43, and an outer sealing ring 70 is installed on the side wall of the second protrusion 45 facing the male connector of the connector.

[0023] It can be understood that the internal thread 41 and the card slot 42 on the female shielding ring 40 of the present invention can be respectively matched with the male end of the threaded type and the snap type to fix the male end on the female end. When the male shielding ring 50 and the female shielding ring 40 abut or overlap and are assembled in place, the special-shaped O-ring 10 can seal the connection between the male end and the female end.

[0024] Figure 3 The cross-sectional structure diagram after the assembly of the male end of the circular connector of the present invention and the push-pull type snap structure is shown. It can be seen that the positioning structure 80 of the male connector of the connector is sleeved between the male shielding ring 50 and the male terminal core 60. When the male and female ends are inserted and buckled, the card convex 5 on it is inserted into the card slot 42 on the inner wall of the female shielding shell 40 to realize the snap connection and fixation of the male and female ends. At the same time, the end of the positioning structure 80 extends to the outside of the male terminal core 60 and abuts against the second protrusion 2 of the special-shaped O-ring 10 together with it. At the same time, the first protrusion 1 abuts against the side wall of the positioning structure 80, realizing multi-point and multi-layer sealing through the special-shaped O-ring 10 while the male and female ends are buckled and positioned. And when the male end of the connector is axially pushed and pulled, the female terminal core 30 can be protected by the second protrusion 2 and the transverse arm 12, and the thrust of the male shielding ring 50 on the female shielding ring 40 can be reduced, realizing the fastening, shielding and sealing connection between the male end and the female end.

[0025] Figure 4The sectional structural schematic diagram after the male end of the circular connector with threads of the present invention is assembled is shown. It can be seen that the outer wall of the male end shielding ring 50 of the male end of the connector extends to the periphery of the end of the male end rubber core 60, and an external thread 4 is provided thereon. During the assembly connection, 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 rubber core 60 abuts against the second protrusion 2 of the special-shaped O-ring 10, and 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 impose any limitation on the technical scope of the present invention. Any modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. Special-shaped O-rings are used for: Its cross-section is an L-shaped structure, including a longitudinal arm and a transverse arm that are integrally formed and vertically arranged: the longitudinal arm extends axially, and a first protrusion is formed on the inner arm away from the transverse arm, and the outer wall of the first protrusion is an arc surface and is smoothly connected to the end of the longitudinal arm; the transverse arm extends radially, and a second protrusion is formed on the end away from the longitudinal arm, and the outer wall of the second protrusion is an arc surface and is smoothly connected to the outer wall and the inner wall of the transverse arm, and a gap avoidance groove connected end to end is formed between the first protrusion, the second protrusion and the inner wall of the special-shaped O-ring.

2. A universal circular connector female end connection structure, comprising a female end rubber core embedded with two or more female terminals; characterized in that: The outer sleeve of the female end rubber core is provided with a female end shielding ring, and the inner wall of the female end shielding ring is embedded with the special-shaped O-ring as claimed in claim 1, the longitudinal arm of the special-shaped O-ring is abutted against the inner wall of the female end shielding ring, and the outer wall of the transverse arm is abutted against the end of the female end rubber 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 rubber core, the inner wall of the female end shielding ring is provided with an internal thread and a groove in sequence on the outer side of 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 convexity of the male end of the connector, and the outer wall of the female end shielding ring is formed with a positioning thread for connecting and fixing the female end of the connector.

3. The universal circular connector female end connection structure according to claim 2, characterized in that: The outer wall of the female end rubber core and the inner wall of the female end shielding ring are both matching step structures. A limit groove extending radially and a guide groove extending axially 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 limit groove is adapted to the first protrusion on the inner wall of the female end shielding ring.

4. The universal circular connector female end connection structure according to claim 2, characterized in that: The female end shielding ring is formed with a second protrusion 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.

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