Round connector with drainage function

Abstract

A circular connector with a drainage function comprises a female head and a male head, the female head comprises a first shell, a connecting plug and a connecting ring, the connecting plug and the connecting ring are arranged at the end of the first shell, the connecting ring surrounds the outer side of the connecting plug, an installation cavity is formed between the connecting ring and the connecting plug, and the outer side of the connecting plug is sleeved with a sealing piece located in the installation cavity; an external thread is arranged on the outer side wall of the connecting ring; the male head comprises a second shell, a housing arranged at the end of the second shell, a contact pin and a connecting sleeve, the free end of the housing is matched with the sealing element in an abutting mode, the contact pin is arranged in the housing, the connecting sleeve is rotatably arranged outside the housing in a sleeving mode, the inner side wall of the connecting sleeve is a smooth wall face, and the wall face is provided with internal threads matched with the external threads; and a drainage channel is formed by an assembly gap among the connecting sleeve, the connecting ring and the annular shell. Compared with the prior art, the circular connector can prevent the sealing element from being damaged, the waterproof performance is improved, the service life of the sealing element is prolonged, water is drained through the drainage channel, and the waterproof effect is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of circular connectors, and in particular relates to a circular connector with a drainage function. Background Art

[0002] Circular connectors are a common electronic connector, mainly used for power connection, signal transmission, etc. Since circular connectors have good protection performance, they can be used in complex environments, such as underwater. In this environment, it is necessary to ensure that the male and female heads of the circular connector have good sealing and waterproof performance to prevent water from entering the connector and damaging the connector, or in outdoor scenes such as photovoltaic inverters. In this use environment, its waterproof level is lower than that of connectors used underwater.

[0003] See also Figure 1-Figure 2 The outer wall of the male cover of the existing circular connector is provided with an external thread, the outer cover of the female plug connector is provided with a sealing ring for waterproofing and a rotatable connecting sleeve, and the inner wall of the connecting sleeve is provided with an internal thread that matches the external thread of the cover. When the male and female connectors are connected, the cover and the plug connector are plugged into each other and locked through the connecting sleeve until the end of the male connector abuts against the sealing ring to achieve sealing between the male and female connectors. Due to the threaded connection between the connecting sleeve and the cover, the sealing ring will be deformed after the end of the cover abuts against the sealing ring during the assembly process, and the deformed part will flow into the gap between the cover and the connecting sleeve. Under the long-term wear of the thread, the sealing ring is easy to fail, which will reduce the waterproof level of the circular connector and affect the normal operation of the equipment.

[0004] Based on the above-mentioned existing circular connector, the present invention aims to provide a circular connector suitable for outdoor scenes and having good sealing performance. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a circular connector with a drainage function. The connector is mainly used in outdoor scenes and has good sealing and waterproof performance.

[0006] To achieve the above objectives, the present invention discloses a circular connector with a drainage function, comprising a female connector and a male connector, wherein the female connector comprises a first housing, a plug connector and a connecting ring disposed at an end of the first housing, the connecting ring surrounds the outer side of the plug connector, and an installation cavity is formed between the connecting ring and the plug connector, a sealing member disposed in the installation cavity is sleeved on the outer side of the plug connector, and an outer side wall of the connecting ring is provided with an external thread;

[0007] The male plug includes a second shell and a cover shell, a pin and a connecting sleeve arranged at the end of the second shell, the free end of the cover shell is pressed and matched with the sealing member, the pin is arranged in the cover shell, the connecting sleeve is rotatably sleeved outside the cover shell, and the inner side wall of the connecting sleeve is a smooth wall surface, which is provided with an internal thread matched with the external thread;

[0008] An assembly gap is provided between the connecting sleeve, the connecting ring and the annular shell to form a drainage channel.

[0009] Preferably, the outer wall of the cover shell is provided with a plurality of first rotating buckles spaced apart along the circumferential direction, and the inner wall of the connecting sleeve is provided with a plurality of second rotating buckles spaced apart along the circumferential direction, and a first spacing exists between two adjacent second rotating buckles so that the first rotating buckle can pass through the space between the two adjacent second rotating buckles.

[0010] Preferably, the outer side wall of the cover shell is provided with a first limiting ring which is continuously arranged along the circumferential direction, the first rotating buckle is connected to the first limiting ring, and the second rotating buckle is limitedly matched with the first limiting ring.

[0011] Preferably, the side wall of the first limiting ring has a guiding slope, and one end of the guiding slope extends to the first end portion of the first limiting ring close to the female head.

[0012] Preferably, at the first end, the guiding slope is located on the outer side wall of the housing.

[0013] Preferably, the plurality of first rotating buckles are arranged at equal intervals.

[0014] Preferably, the outer side wall of the connecting ring is provided with a second limiting ring arranged along the circumferential direction, and the second limiting ring is limitedly matched with the end portion of the connecting sleeve.

[0015] Preferably, the outer side wall of the plug connector is provided with a limiting groove, and the inner side wall of the cover shell is provided with a limiting block that cooperates with the limiting groove.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The connecting sleeve is rotatably sleeved outside the housing. When the male and female heads are connected, the female head's plug connector is plugged into the male head's housing, and the external thread of the connecting ring is connected to the internal thread of the connecting sleeve. Then, the connecting sleeve is rotated, and the male and female heads move toward each other until the plug connector and the housing are fully plugged in. After the plug-in is completed, the assembly gap between the connecting sleeve, the connecting ring and the annular housing forms a drainage channel. When external water enters from one end of the connecting sleeve, the water can flow out from the other end of the connecting sleeve along the drainage channel. This can prevent water from accumulating in the connecting sleeve, causing water to penetrate into the position of the seal after long-term use, accelerating fatigue damage of the seal, and reducing the waterproof performance and service life of the seal.

[0018] The female head includes a connecting ring surrounding the plug connector to form an installation cavity, and the sealing member is sleeved on the plug connector and located in the installation cavity. When the male head and the female head are connected, the cover of the male head is inserted into the installation cavity until the end of the cover is pressed against the sealing member, thereby achieving sealing and waterproofing. The threads that cooperate with each other between the female head and the male head are respectively located on the outer side wall of the connecting ring and the inner side wall of the connecting sleeve, and are not located in the installation cavity for installing the sealing member. This avoids the problem in the prior art that the sealing member is easily damaged by the screw thread after being squeezed and deformed, thereby reducing the sealing and waterproofing performance, and can improve the waterproofing effect and service life of the circular connector.

[0019] The inner wall of the connecting sleeve is not set as a complex, precisely connected structure to improve the waterproof performance. On the contrary, the inner wall of the connecting sleeve is a smooth wall surface, which is more conducive to drainage, thereby improving the waterproof performance. This is completely opposite to the inner wall structure of existing circular connectors used underwater (due to the use environment). BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a cross-sectional view of an existing circular joint.

[0021] Figure 2 for Figure 1 A local enlarged schematic diagram of the middle A;

[0022] Figure 3 is a schematic diagram of a three-dimensional structure of a circular connector with a drainage function in an embodiment;

[0023] Figure 4 for Figure 1 A cross-sectional view of a circular connector with drainage function in a medium circle;

[0024] Figure 5 for Figure 4 A partial enlarged schematic diagram of point B in the middle;

[0025] Figure 6 for Figure 1 Schematic diagram of the three-dimensional structure of the middle male head;

[0026] Figure 7 for Figure 6 Schematic diagram of the three-dimensional exploded structure of the middle male head;

[0027] Figure 8 for Figure 1 Schematic diagram of the three-dimensional structure of the middle female connector;

[0028] Female connector 1; first housing 11; plug connector 12; limiting groove 121; connecting ring 13; external thread 131; second limiting ring 132; installation cavity 14; sealing member 15;

[0029] Male connector 2; second housing 21; cover 22; stopper 221; first rotation buckle 222; first stopper ring 223; guide slope 224; plug pin 23; connecting sleeve 24; second rotation buckle 241; internal thread 242. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] A circular connector with drainage function, see Figure 3-Figure 8 , including a female connector 1 and a male connector 2, the female connector 1 including a first shell 11 and a plug connector 12 and a connecting ring 13 arranged at the end of the first shell 11, the connecting ring 13 surrounds the outer side of the plug connector 12, and an installation cavity 14 is formed between the connecting ring 13 and the plug connector 12, and a sealing member 15 located in the installation cavity 14 is sleeved on the outer side of the plug connector 12, which is preferably an O-ring, an outer side wall of the connecting ring 13 is provided with an external thread 131, and an outer side wall of the plug connector 12 is provided with a limiting groove 121. The male plug 2 includes a second shell 21 and a cover shell 22, a pin 23 and a connecting sleeve 24 arranged at the end of the second shell 21. The inner side wall of the cover shell 22 is provided with a limit block 221 that cooperates with the limit groove 121. The free end of the cover shell 22 is pressed and fitted with the sealing member 15. The pin 23 is arranged in the cover shell 22. The connecting sleeve 24 is rotatably sleeved on the outside of the cover shell 22. The inner side wall of the connecting sleeve 24 is provided with an internal thread 242 that cooperates with the external thread 131.

[0032] When the male connector 2 and the female connector 1 are connected, the plug connector 12 of the female connector 1 is plugged into the cover 22 of the male connector 2, and the external thread 131 of the connecting ring 13 is connected to the internal thread 242 of the connecting sleeve 24; then, the connecting sleeve 24 is rotated, and the male connector 2 and the female connector 1 move toward each other until the plug connector 12 and the cover 22 are fully plugged in. After the plugging is completed, the assembly gap between the connecting sleeve 24, the connecting ring 13 and the annular shell forms a drainage channel. When external water enters from one end of the connecting sleeve 24, the water can flow out from the other end of the connecting sleeve 24 along the drainage channel, which can prevent water from accumulating in the connecting sleeve 24, resulting in water infiltration into the position of the sealing member 15 after long-term use, accelerating fatigue damage of the sealing member 15, and reducing the waterproof performance and service life of the sealing member 15. In other words, the connection sleeve 24 of this embodiment can not only realize the precise connection between the male connector 2 and the female connector 1, but also forms a drainage channel to drain water by making full use of the assembly gap between the connection sleeve 24, the connection ring 13 and the annular housing, which can prevent water from accumulating inside the connection sleeve 24 and affecting the sealing member 15. Figure 1-Figure 2The seal 15 is disposed between the connection sleeve 24 and the housing 22, so that the interior of the connection sleeve 24 is sealed by the seal 15 and does not have a drainage function. At the same time, in order to avoid water accumulation inside the connection sleeve 24, the connection between the connection sleeve 24 and the housing 22 and the plug connector 12 of the existing circular connector is relatively tight, and it is difficult to form a drainage channel between the connection sleeve 24 and the housing 22 and the plug connector 12. Figure 1-Figure 2 There is no circular connector such as the one in this embodiment, which forms a drainage channel on the inner wall of the connection sleeve 24 to drain the accumulated water, improve the waterproof performance, and increase the service life of the seal 15. In addition, in the existing circular connectors such as those used underwater, firstly, its usage scenario is underwater, so there is no need for drainage function. Secondly, in order to ensure the waterproof performance of the connection sleeve 24 and other structures, the inner wall of the existing connection sleeve 24 will be provided with a stepped structure with better waterproof performance. In this embodiment, Figure 3-4 As shown, the inner wall of the connecting sleeve 24 is not set as a complex, precisely connected structure to improve the waterproof performance. On the contrary, the inner wall of the connecting sleeve is a smooth wall surface, which is more conducive to drainage under this structure, thereby improving the waterproof performance. This is completely opposite to the inner wall structure of the existing circular connector used underwater (due to the use environment).

[0033] After the male connector 2 and the female connector 1 are butt-connected, the cover 22 of the male connector 2 is inserted into the installation cavity 14 until the end of the cover 22 is pressed against the seal 15, thereby achieving sealing and waterproofing. The threads that cooperate with each other between the female connector 1 and the male connector 2 are respectively located on the outer wall of the connecting ring 13 and the inner wall of the connecting sleeve 24, and are not located in the installation cavity 14 where the seal 15 is installed. This avoids the problem that the seal 15 is easily damaged by the screw thread after being squeezed and deformed, thereby reducing the sealing and waterproofing performance in the prior art, and can improve the waterproofing effect and service life of the circular connector.

[0034] The connection sleeve 24 is rotatably connected to the outside of the housing 22, and the structure of the rotational connection of the other housing 22 will hinder the flow of water in the drainage channel. In order to achieve the connection and rotation of the connection sleeve 24 and the drainage performance of the drainage channel, in this embodiment, the outer wall of the housing 22 is provided with a plurality of first rotation buckles 222 arranged at intervals along the circumferential direction, and the inner wall of the connection sleeve 24 is provided with a plurality of second rotation buckles 241 arranged at intervals along the circumferential direction. There is a first spacing (which can be set as needed) between two adjacent second rotation buckles 241 so that the first rotation buckle 222 can pass through the space between the two adjacent second rotation buckles 241. When assembling the connection sleeve 24, the second rotation buckle 241 is aligned with the space between the first rotation buckle 222 so as to pass through the first rotation buckle 222; when the connection sleeve 24 is locked, the second rotation buckle 241 rotates to a position opposite to the first rotation buckle 222, and the first rotation buckle 222 can limit the second rotation buckle 241, so that the female head 1 can be locked through the connection sleeve 24. In the locked state, the gap between the second rotating buckles 241 and the gap between the first rotating buckles 222 are connected, so that the drainage channel is not blocked at the connection position, so that the water flowing into the connecting sleeve 24 can be discharged smoothly, thereby improving the drainage effect.

[0035] In order to prevent the second rotating buckle 241 from escaping from the gap between the first rotating buckle 222 during rotation, the outer wall of the cover shell 22 is provided with a first limiting ring 223 which is continuously arranged along the circumferential direction, the first rotating buckle 222 is connected to the first limiting ring 223, and the second rotating buckle 241 is limitedly matched with the first limiting ring 223.

[0036] Furthermore, the side wall of the first limiting ring 223 has a guiding inclined surface 224, and one end of the guiding inclined surface 224 extends to the first end portion of the first limiting ring 223 close to the female head 1 (ie, Figure 4 A guide slope 224 is provided, which facilitates the second rotating buckle 241 to pass through the second limiting ring 132, thereby facilitating assembly.

[0037] In this embodiment, at the first end, the guide bevel 224 is located on the outer wall of the cover shell 22, that is, the guide bevel 224 is smoothly connected to the outer wall of the cover shell 22, so that water in the connecting sleeve 24 can flow out smoothly, thereby improving the drainage effect and avoiding the first limiting ring 223 from hindering the water flow and affecting the drainage effect.

[0038] In this embodiment, the first rotating buckle 222 and the second rotating buckle 241 are arranged at equal intervals.

[0039] In this embodiment, the outer side wall of the connection ring 13 is provided with a second limiting ring 132 arranged in the circumferential direction, and the second limiting ring 132 is limitedly matched with the end of the connection sleeve 24, so that when the connection sleeve 24 moves to the assembly position, the second limiting ring 132 can limit the movement of the connection sleeve 24, and prevent the connection sleeve 24 from moving to the penetration position and damaging the second rotating buckle 241. In addition, the second limiting ring 132 can also cover the opening of the connection sleeve 24, which can reduce the external water from entering the connection sleeve 24 and improve the protection effect.

[0040] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A circular connector with drainage function, characterized in that: The plug connector comprises a female connector and a male connector, wherein the female connector comprises a first shell, and a plug connector and a connecting ring arranged at the end of the first shell, the connecting ring surrounds the outer side of the plug connector, and an installation cavity is formed between the connecting ring and the plug connector, a sealing member located in the installation cavity is sleeved on the outer side of the plug connector, and an outer side wall of the connecting ring is provided with an external thread; The male plug includes a second shell and a cover shell, a pin and a connecting sleeve arranged at the end of the second shell, the free end of the cover shell is pressed and matched with the sealing member, the pin is arranged in the cover shell, the connecting sleeve is rotatably sleeved outside the cover shell, and the inner side wall of the connecting sleeve is a smooth wall surface, which is provided with an internal thread matched with the external thread; The assembly gap between the connecting sleeve, the connecting ring and the annular shell forms a drainage channel.

2. The circular connector with drainage function according to claim 1, characterized in that: The outer wall of the cover shell is provided with a plurality of first rotating buckles spaced apart along the circumferential direction, and the inner wall of the connecting sleeve is provided with a plurality of second rotating buckles spaced apart along the circumferential direction. There is a first spacing between two adjacent second rotating buckles so that the first rotating buckle can pass through the space between the two adjacent second rotating buckles.

3. The circular connector with drainage function according to claim 2, characterized in that: The outer side wall of the cover shell is provided with a first limiting ring which is continuously arranged along the circumferential direction, the first rotating buckle is connected to the first limiting ring, and the second rotating buckle is limitedly matched with the first limiting ring.

4. The circular connector with drainage function according to claim 3, characterized in that: The side wall of the first limiting ring has a guiding slope, and one end of the guiding slope extends to the first end portion of the first limiting ring close to the female head.

5. The circular connector with drainage function according to claim 4, characterized in that: At the first end, the guiding slope is located on the outer side wall of the housing.

6. The circular connector with drainage function according to claim 2, characterized in that: A plurality of first rotating buckles are arranged at equal intervals.

7. The circular connector with drainage function according to claim 1, characterized in that: The outer side wall of the connecting ring is provided with a second limiting ring arranged along the circumferential direction, and the second limiting ring is limitedly matched with the end of the connecting sleeve.

8. The circular connector with drainage function according to claim 1, characterized in that: The outer side wall of the plug connector is provided with a limiting groove, and the inner side wall of the cover shell is provided with a limiting block that cooperates with the limiting groove.

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