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 piece in an abutting mode, the contact pin is arranged in the housing, the housing is rotatably sleeved with the connecting sleeve, and the inner side wall of the connecting sleeve is provided with an internal thread matched with the external thread; 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 provided by the utility model can prevent the sealing element from being damaged, improves the waterproof performance, prolongs the service life of the sealing element, drains water through the drainage channel, and improves the waterproof effect.

Description

Technical Field

[0001] The utility model 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 common electronic connectors, primarily used for power connections and signal transmission. Due to their excellent protection, circular connectors can be used in complex environments, such as underwater, where a good seal and waterproofing between the male and female connectors is required to prevent water from entering and damaging the connector. They can also be used in outdoor applications such as photovoltaic inverters, where their waterproof rating is lower than that of connectors designed for underwater use.

[0003] See also Figure 1-Figure 2 In existing circular connectors, the outer wall of the male housing is threaded, while the outer cover of the female connector is equipped with a waterproof sealing ring and a rotatable connecting sleeve. The inner wall of the connecting sleeve is threaded, matching the outer threads of the housing. When the male and female connectors are connected, the housing and the connector are plugged into each other and locked together via the connecting sleeve until the end of the male connector abuts the sealing ring, achieving a seal between the male and female connectors. Due to the threaded connection between the connecting sleeve and the housing, the end of the housing abuts the sealing ring during assembly, causing the sealing ring to deform. The deformed part will flow into the gap between the housing and the connecting sleeve. Due to long-term wear of the threads, the sealing ring is prone to failure, which can reduce the waterproof rating 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. Utility Model Content

[0005] The purpose of the utility model 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. The female connector comprises a first housing, a plug connector and a connecting ring provided at an end of the first housing. The connecting ring surrounds the outer side of the plug connector, forming an installation cavity 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 wall of the connecting ring is provided with an external thread.

[0007] The male connector includes a second housing and a cover, a pin, and a connecting sleeve provided at the end of the second housing. The free end of the cover is pressed against the sealing member. The pin is provided in the cover. The connecting sleeve is rotatably sleeved outside the cover. The inner side wall of the connecting sleeve is provided with an internal thread that cooperates 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 arranged at intervals along the circumferential direction, and the inner wall of the connecting sleeve is provided with a plurality of second rotating buckles arranged at intervals 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.

[0010] Preferably, the outer side wall of the cover shell is provided with a first limiting ring 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 portion, 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 engaged with the end portion of the connecting sleeve in a limiting manner.

[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 beneficial effects of the present invention are:

[0017] The connecting sleeve is rotatably mounted on the housing. When the male and female connectors are mated, the female connector's plug engages with the male connector's housing, connecting the external threads of the connecting ring with the internal threads of the connecting sleeve. The connecting sleeve is then rotated, moving the male and female connectors toward each other until the plug and housing are fully engaged. Once engaged, a drainage channel forms within the assembly gap between the connecting sleeve, the connecting ring, and the annular housing. When water enters from one end of the connecting sleeve, it flows out through the drainage channel from the other end. This prevents water from accumulating within the connecting sleeve and potentially seeping into the seal after prolonged use, accelerating fatigue damage and reducing the seal's waterproof performance and service life.

[0018] The female connector includes a connecting ring that surrounds the plug connector, forming a mounting cavity. A seal fits over the plug connector and is located within the mounting cavity. When the male and female connectors are mated, the male connector's cover is inserted into the mounting cavity until the end of the cover abuts the seal, achieving a seal and waterproofing. The mating threads between the female and male connectors are located on the outer wall of the connecting ring and the inner wall of the connecting sleeve, respectively, and are not located within the mounting cavity for the seal. This avoids the problem of the seal being easily damaged by the threads after being squeezed and deformed, which reduces the sealing and waterproofing performance, as is the case in the prior art. This improves the waterproofing effect and service life of the circular connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A cross-sectional view of an existing circular joint

[0020] Figure 2 for Figure 1 A partial enlarged schematic diagram of point A in the middle;

[0021] Figure 3 Schematic diagram of the three-dimensional structure of a circular connector with drainage function in an embodiment;

[0022] Figure 4 for Figure 1 Cross-section of a circular connector with drainage function in the middle circle;

[0023] Figure 5 for Figure 4 A partial enlarged schematic diagram of point B in the middle;

[0024] Figure 6 for Figure 1 Schematic diagram of the three-dimensional structure of the middle male head;

[0025] Figure 7 for Figure 6 Schematic diagram of the three-dimensional exploded structure of the middle male connector;

[0026] Figure 8 for Figure 1 Schematic diagram of the three-dimensional structure of the middle female connector;

[0027] Female connector 1; first housing 11; plug connector 12; limiting groove 121; connecting ring 13; external thread 131; second limiting ring 132; mounting cavity 14; sealing member 15;

[0028] Male connector 2; second housing 21; cover 22; stopper 221; first rotation buckle 222; first stopper ring 223; guide slope 224; pin 23; connecting sleeve 24; second rotation buckle 241; internal thread 242. DETAILED DESCRIPTION

[0029] 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 implementation methods.

[0030] 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 includes a first shell 11 and a plug connector 12 and a connecting ring 13 provided 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. The outer side of the plug connector 12 is provided with a sealing member 15 located in the installation cavity 14, which is preferably an O-ring. The outer wall of the connecting ring 13 is provided with an external thread 131, and the outer wall of the plug connector 12 is provided with a limiting groove 121. The male connector 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 against the seal 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.

[0031] When male connector 2 and female connector 1 are mated, female connector 1's connector 12 engages with male connector 2's housing 22, and the external threads 131 of connecting ring 13 connect with the internal threads 242 of connecting sleeve 24. Connecting sleeve 24 is then rotated, causing male connector 2 and female connector 1 to move toward each other until connector 12 and housing 22 are fully engaged. After mating, a drainage channel forms in the assembly gap between connecting sleeve 24, connecting ring 13, and the annular housing. When water enters from one end of connecting sleeve 24, it flows out through the drainage channel from the other end. This prevents water from accumulating inside connecting sleeve 24, which could lead to water seeping into seal 15 after prolonged use, accelerating fatigue damage and reducing its waterproof performance and service life. In other words, the connecting sleeve 24 of this embodiment can not only realize the precise connection between the male connector 2 and the female connector 1, but also form a drainage channel by making full use of the assembly gap between the connecting sleeve 24, the connecting ring 13 and the annular housing to drain water, which can prevent the problem of water accumulation inside the connecting sleeve 24 and affecting the sealing member 15. Figure 1-Figure 2 The circular connector of the present invention has a seal 15 disposed between the connecting sleeve 24 and the housing 22, which makes the interior of the connecting sleeve 24 sealed by the seal 15 and does not have a drainage function. At the same time, in order to prevent water from accumulating inside the connecting sleeve 24, the connection between the connecting sleeve 24, 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 connecting sleeve 24, the housing 22 and the plug connector 12. Figure 1-Figure 2The circular connector does not have a drainage channel formed on the inner wall of the connecting sleeve 24 to drain the accumulated water, improve the waterproof performance, and increase the service life of the seal 15. In addition, in existing circular connectors such as those used underwater, firstly, its usage scenario is underwater, so there is no need for a drainage function. Secondly, in order to ensure the waterproof performance of the connecting sleeve 24 and other structures, the inner wall of the existing connecting 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 existing circular connectors used underwater (due to the use environment).

[0032] After the male connector 2 and the female connector 1 are mated and connected, the cover 22 of the male connector 2 is inserted into the installation cavity 14 until the end of the cover 22 abuts against the seal 15, thereby achieving a sealed and waterproof effect. The mating threads between the female connector 1 and the male connector 2 are located on the outer wall of the connecting ring 13 and the inner wall of the connecting sleeve 24, respectively, and are not located within the installation cavity 14 where the seal 15 is installed. This avoids the problem of the seal 15 being easily damaged by the threads after being squeezed and deformed, which reduces the sealing and waterproof performance, as is the case in the prior art. This improves the waterproof effect and service life of the circular connector.

[0033] The connecting sleeve 24 is rotatably connected to the outside of the housing 22. The structure of the remaining rotatable connection of the housing 22 will hinder the flow of water in the drainage channel. In order to achieve the connection and rotation of the connecting 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 rotating buckles 222 spaced apart along the circumference, and the inner wall of the connecting sleeve 24 is provided with a plurality of second rotating buckles 241 spaced apart along the circumference. There is a first spacing (which can be set as needed) between two adjacent second rotating buckles 241 so that the first rotating buckle 222 can pass through the space between the two adjacent second rotating buckles 241. When assembling the connecting sleeve 24, the second rotating buckle 241 aligns with the space between the first rotating buckles 222 and passes through the first rotating buckle 222; when the connecting sleeve 24 is locked, the second rotating buckle 241 rotates to a position opposite to the first rotating buckle 222. The first rotating buckle 222 can restrict the second rotating buckle 241, thereby locking the female connector 1 through the connecting 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, which makes the drainage channel unobstructed at the connection position, so that the water flowing into the connecting sleeve 24 can be discharged smoothly, thereby improving the drainage effect.

[0034] In order to prevent the second rotating buckle 241 from falling out of 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 that is continuously arranged along the circumference. 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.

[0035] Furthermore, the side wall of the first limiting ring 223 has a guiding slope 224, one end of the guiding slope 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 to facilitate the second rotating buckle 241 to pass through the second limiting ring 132, thereby facilitating assembly.

[0036] In this embodiment, at the first end, the guide slope 224 is located on the outer wall of the cover shell 22, that is, the guide slope 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.

[0037] In this embodiment, the first rotating buckle 222 and the second rotating buckle 241 are arranged at equal intervals.

[0038] In this embodiment, a second limiting ring 132 is provided along the circumferential direction of the outer wall of the connecting ring 13. The second limiting ring 132 engages with the end of the connecting sleeve 24. Thus, when the connecting sleeve 24 is moved to the assembled position, the second limiting ring 132 limits the movement of the connecting sleeve 24, preventing the connecting sleeve 24 from moving to the extended position and damaging the second rotating buckle 241. Furthermore, the second limiting ring 132 also blocks the opening of the connecting sleeve 24, which reduces the ingress of water into the connecting sleeve 24 and improves the protective effect.

[0039] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. A person skilled in the art will be able to make other variations or modifications based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A circular connector with drainage function, characterized in that: The connector comprises a female connector and a male connector, wherein the female connector comprises a first housing, a plug connector and a connecting ring provided at the end of the first housing, the connecting ring surrounding the outer side of the plug connector, forming an installation cavity between the connecting ring and the plug connector, a sealing member located in the installation cavity is provided on the outer side of the plug connector, and an outer wall of the connecting ring is provided with an external thread; The male connector includes a second housing and a cover, a pin, and a connecting sleeve provided at the end of the second housing. The free end of the cover is pressed against the sealing member. The pin is provided in the cover. The connecting sleeve is rotatably sleeved outside the cover. The inner side wall of the connecting sleeve is provided with an internal thread that cooperates with the external thread. An 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 side wall of the cover shell is provided with a plurality of first rotating buckles arranged at intervals along the circumferential direction, and the inner side wall of the connecting sleeve is provided with a plurality of second rotating buckles arranged at intervals 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. 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 guide 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: The 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 matched with the end portion of the connecting sleeve in a limiting manner.

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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