Three-core power connector

Abstract

The three-core power connector comprises a plug and a socket, a connecting sleeve is arranged at a wiring end of the plug, a radial contraction part is arranged on the connecting sleeve, a plurality of telescopic openings are formed in the side wall of the radial contraction part, a cable sealing ring is arranged in the connecting sleeve, the connecting sleeve is in threaded connection with a tail cover, and a radial tightening part is arranged on the inner wall of the tail cover. The diameter of the radial tightening part is gradually reduced from one end close to the radial contraction part to the other end. Compared with a traditional sealant injection mode, through the synergistic effect of the radial contraction part and the radial tightening part, a complex sealant injection process is not needed, the operation process is simplified, the requirement for the skill level of an operator is lowered, meanwhile, follow-up maintenance work is facilitated, and the maintenance difficulty and cost are reduced. Compared with a sealing ring interference fit mode, the sealing ring does not need to be expanded and compressed through a specific tool clamp, operation is easy, the assembling efficiency is improved, the production period is shortened, and the method is suitable for large-scale production.

Description

TECHNICAL FIELD

[0001] The utility model relates to power connector technical field more specifically, is related to a three -core power connector. BACKGROUND

[0002] As the key component for realizing power transmission, the stability and reliability of power connector is very important. Among them, the sealing problem of the cable connection of the power connector has been the focus of the industry. If there is a gap in the cable connection, moisture, dust and other impurities may enter, thereby affecting the stability of power transmission, and in severe cases, even causing short circuit and other faults, threatening the normal operation of the equipment.

[0003] At present, the industry mainly adopts two common ways for the sealing of the cable connection of the power connector. One is to inject sealant at the connection after connection, which can achieve sealing effect to a certain extent, but the process is relatively complex. Each sealing operation needs to accurately control the injection amount and application position of the sealant, which not only requires high skill level of the operator, but also consumes time and labor cost. In addition, once the equipment fails and needs to be repaired, the presence of the sealant makes the disassembly process extremely difficult, increasing the difficulty and cost of maintenance. The other way is to use a larger size sealing ring, so that the sealing ring is in interference fit with the installation position, and the elastic deformation of the sealing ring is used to fill the gap to achieve sealing. However, this way is difficult to assemble, and during the assembly process, the sealing ring needs to be expanded and compressed because its size is larger than the installation position, which affects the production efficiency.

[0004] The above deficiencies are to be improved. SUMMARY

[0005] In order to solve or alleviate the problem of inconvenient implementation of the sealing method of the existing power connector at the cable connection, the utility model provides a three -core power connector.

[0006] The technical scheme of the utility model is as follows:

[0007] A three -core power connector, comprising a plug and a socket, the plug connection end is provided with a connecting sleeve, the connecting sleeve is provided with a radial contraction part, a plurality of telescopic openings are opened in the side wall of the radial contraction part, a cable sealing ring is arranged in the connecting sleeve, a tail cover is screwed on the connecting sleeve, a radial tightening part is arranged on the inner wall of the tail cover, and the diameter of the radial tightening part gradually decreases from one end close to the radial contraction part to the other end.

[0008] Further, the telescopic opening is inclined.

[0009] Further, the end of the radial contraction part is provided with a chamfer.

[0010] Further, the radial contraction part is provided with a spiral convex strip.

[0011] Further, the cable sealing ring is provided with a waterproof film.

[0012] Further, the plug comprises a second housing and a plug core connected by plug-in connection, the plug core is provided with a plug-in sheath, the plug-in sheath is provided with a female seat pole inside, and the female seat pole is provided with a clamping force enhancer outside.

[0013] Further, the plug is provided with a first sealing ring, and the plug-in end of the socket abuts against the first sealing ring.

[0014] Further, the socket is provided with a connecting flange, and the connecting flange is provided with a second sealing ring.

[0015] Further, the socket terminal end is provided with a terminal slot for accommodating a terminal, and the socket is provided with a terminal fastener for connecting the terminal at the terminal slot.

[0016] Further, the terminal fastener comprises a nut embedded in the socket, the nut is threadedly connected with a bolt, and the head of the bolt is accommodated in the terminal slot.

[0017] Further, the terminal slot is provided with an insulating partition plate, and terminal ends of different polarities are arranged on two sides of the insulating partition plate respectively.

[0018] Further, the socket comprises a first housing and a rear cover, the first housing is provided with a clamping groove, the rear cover is provided with a clamping buckle clamped with the clamping groove, the insulating partition plate comprises a plug-in plate arranged on the first housing and a plug-in slot arranged on the rear cover, and the plug-in plate and the plug-in slot are connected by plug-in connection.

[0019] The utility model has the advantages that, through the cooperation of the radial contraction part and the radial tightening part, compared with the traditional injection sealing glue mode, the utility model does not need complex glue injection process, simplifies the operation process, reduces the requirement for the skill level of the operator, is convenient for subsequent maintenance work, reduces the maintenance difficulty and cost, compared with the mode of adopting an interference fit sealing ring, does not need special tooling fixture to expand and compress the sealing ring, is simple to operate, improves assembly efficiency, shortens the production cycle and is suitable for large-scale production. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without any creative effort.

[0021] Figure 1 It is a structure schematic view of the plug and socket connection state of the present application.

[0022] Figure 2 It is a structure schematic view of the plug and socket separation state of the present application.

[0023] Figure 3 It is an explosion schematic view of the front structure of the plug in the present application.

[0024] Figure 4 It is an explosion schematic view of the back structure of the plug in the present application.

[0025] Figure 5 It is a structure schematic view of the tail cover in the present application.

[0026] Figure 6 It is an explosion schematic view of the front structure of the socket in the present application.

[0027] Figure 7 It is an explosion schematic view of the back structure of the socket in the present application.

[0028] Figure 8 It is Figure 4 the structure enlarged view of A in the present application.

[0029] In the drawings, the reference signs are as follows: 1, plug; 101, connecting sleeve; 1011, radial contraction part; 1012, telescopic opening; 1013, chamfer; 102, cable sealing ring; 1021, waterproof film; 103, tail cover; 1031, radial tightening part; 1032, helical protrusions; 104, second housing; 105, plug core; 1051, plug-in sheath; 106, female seat pole piece; 107, clamping force enhancer; 108, first sealing ring; 2, socket; 201, first housing; 2011, connecting flange; 2012, clamping groove; 2013, plug-in plate; 202, back cover; 2021, buckle; 2022, insertion slot; 203, second sealing ring; 204, wiring slot; 205, insulating partition plate. DETAILED DESCRIPTION

[0030] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0031] It should be noted that when a component is referred to as "fixed," "set," or "connected" to another component, it may be located directly or indirectly on that other component. The terms "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or position based on the accompanying drawings, and are for ease of description only, and should not be construed as limiting the technical solution. The terms "first," "second," etc., are used for ease of description only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. "Many" means two or more, unless otherwise explicitly specified. "Several" means one or more, unless otherwise explicitly specified.

[0032] like Figures 1 to 5 As shown in one embodiment of the present invention, a three-core power connector includes a plug 1 and a socket 2. The plug 1 has a connecting sleeve 101 at its terminal. The connecting sleeve 101 has a radially contracting portion 1011. The side wall of the radially contracting portion 1011 has multiple telescopic openings 1012. The connecting sleeve 101 has a cable sealing ring 102 inside. The connecting sleeve 101 is threadedly connected to a tail cap 103. The inner wall of the tail cap 103 has a radially tightening portion 1031. The diameter of the radially tightening portion 1031 gradually decreases from one end near the radially contracting portion 1011 to the other end.

[0033] During wiring, first, the cable is passed through the tail cap 103 and inserted into the connecting sleeve 101. The cable makes tight contact with the cable sealing ring 102 inside the connecting sleeve 101, initially achieving a seal. Next, the tail cap 103 is tightened. As the tail cap 103 rotates, the diameter of the radial tightening part 1031 on the inner wall of the tail cap 103 gradually decreases from one end near the radial contraction part 1011 to the other end. During the tightening process, the radial tightening part 1031 exerts a continuous squeezing effect on the radial contraction part 1011. The radial contraction part 1011 has multiple telescopic openings 1012 on its side wall, giving it a certain deformation capability. Under the squeezing of the radial tightening part 1031, the radial contraction part 1011 contracts radially, further compressing the cable sealing ring 102, making the seal between the cable sealing ring 102 and the cable tighter. This also enhances the sealing performance between the connecting sleeve 101 and the cable, effectively preventing moisture, dust, and other impurities from entering through the connecting cable.

[0034] In this embodiment, through the cooperation of the radial contraction part 1011 and the radial tightening part 1031, compared with the traditional injection sealant method, the complex injection process is not needed, the operation process is simplified, the skill level of the operator is reduced, and the subsequent maintenance work is facilitated, and the maintenance difficulty and cost are reduced. Compared with the method of using an interference fit sealing ring, special tooling fixtures are not needed to expand and compress the sealing ring, the operation is simple, the assembly efficiency is improved, the production cycle is shortened, and it is suitable for large-scale production.

[0035] As shown in Figure 3 , Figure 4 , Figure 5 and Figure 8 , in a preferred example, the telescopic opening 1012 is obliquely arranged.

[0036] The end of the radial contraction part 1011 is provided with a chamfer 1013.

[0037] The radial tightening part 1031 is provided with a spiral convex strip 1032.

[0038] When connecting, during the tightening of the tail cover 103, the radial tightening part 1031 gradually approaches the radial contraction part 1011 of the connecting sleeve 101. Due to the gradual change in diameter of the radial tightening part 1031, when the two are close, the spiral convex strip 1032 increases the friction between the radial tightening part 1031 and the radial contraction part 1011, and strengthens the extrusion effect. The telescopic opening 1012 arranged obliquely on the side wall of the radial contraction part 1011 is more easily guided to twist and deform in the expected direction when extruded due to the design of the oblique angle, making the deformation process smoother. At the same time, the chamfer 1013 at the end of the radial contraction part 1011 allows the radial tightening part 1031 to contact the radial contraction part 1011 more smoothly when approaching, avoiding damage caused by hard contact, and further assisting the radial contraction part 1011 to shrink smoothly. Finally, the radial contraction part 1011 tightly presses the cable sealing ring 102, enhancing the sealing between the connecting sleeve 101 and the cable in all directions, effectively preventing impurities from entering.

[0039] In this embodiment, the obliquely arranged telescopic opening 1012 improves the deformation efficiency and uniformity of the radial contraction part 1011, ensuring that it can better play a role when extruded, enhancing the sealing effect. The chamfer 1013 at the end of the radial contraction part 1011 not only protects the part from being damaged during assembly, but also makes the entire operation process smoother, reducing the assembly difficulty. The spiral convex strip 1032 on the radial tightening part 1031 increases the friction, making the extrusion of the radial tightening part 1031 on the radial contraction part 1011 more stable and effective, and thus more tightly pressing the cable sealing ring 102.

[0040] As shown in Figure 4As shown in the drawings, in a preferred example, the cable sealing ring 102 is provided with a waterproof film 1021.

[0041] The waterproof film 1021 plays a good waterproof role when the cable is not connected, ensuring that the internal circuit is not eroded by water; when the cable is connected, only the waterproof film 1021 needs to be punctured, which is simple to operate, meets the waterproof requirement, and also takes into account the convenience of connection.

[0042] As shown in the drawings, Figure 2 , Figure 3 , Figure 6 and Figure 7 , in a preferred example, the plug 1 is provided with a first sealing ring 108, and the plug-in end of the socket 2 abuts against the first sealing ring 108.

[0043] The socket 2 is provided with a connecting flange 2011, and the connecting flange 2011 is provided with a second sealing ring 203. The connecting flange 2011 is used for installing the socket 2.

[0044] When the power supply is connected, the plug 1 is inserted into the socket 2, and the first sealing ring 108 on the plug 1 abuts against the plug-in end of the socket 2. The first sealing ring 108 fills the gap at the plug-in end of the plug 1 and the socket 2 by virtue of its elasticity, preventing external impurities from entering. In addition, when the socket 2 is installed, the second sealing ring 203 on the connecting flange 2011 will tightly fit the installation surface, filling the gap between the connecting flange 2011 and the installation surface, improving the sealing performance of the socket 2 installation part, preventing moisture, dust and other impurities from entering from the socket 2 installation part, and ensuring the normal work of the power supply connector.

[0045] In this embodiment, the first sealing ring 108 and the second sealing ring 203 further improve the overall sealing performance of the power supply connector. The first sealing ring 108 effectively fills the gap at the plug-in end of the plug 1 and the socket 2, reducing the problem of unstable power supply transmission caused by poor sealing at the interface, and ensuring the reliability of the power supply connection. The second sealing ring 203 on the connecting flange 2011 not only strengthens the sealing performance of the socket 2 installation part, but also plays a role in shock absorption and buffering to a certain extent, reducing the impact of external vibration on the socket 2 and prolonging the service life of the socket 2.

[0046] As shown in the drawings, Figure 3 and Figure 4 , in a preferred example, the plug 1 includes a second housing 104 and a plug core 105 connected by plug-in, the plug core 105 is provided with a plug-in sheath 1051, the plug-in sheath 1051 is provided with a female seat pole piece 106 inside, and the female seat pole piece 106 is provided with a clamping force enhancer 107 outside.

[0047] The clamping force enhancer 107 is an elastic metal sheet arranged outside the female seat pole piece 106, which enhances the clamping force of the female seat pole piece 106 on the male pin of the socket 2, ensures the stable connection of the female seat pole piece 106 and the male pin of the socket 2, reduces the contact resistance, and reduces the risk of heating. The plug-in sheath 1051 can prevent people from accidentally touching the female seat pole piece 106, thereby improving the safety of use.

[0048] As shown in Figure 6 and Figure 7 In a preferred example, the socket 2 terminal is provided with a terminal slot 204 for accommodating the terminal, and the socket 2 is provided with a terminal fastener for connecting the terminal at the terminal slot 204.

[0049] The terminal fastener includes a nut embedded in the socket 2, and the nut is threadedly connected with a bolt, and the head of the bolt is accommodated in the terminal slot 204.

[0050] An insulating partition plate 205 is arranged in the terminal slot 204, and terminals of different polarities are arranged on both sides of the insulating partition plate 205.

[0051] During the terminal operation, the terminal (such as a wire nose) is first placed into the terminal slot 204 of the socket 2 terminal. The terminal slot 204 provides a space for accommodating the terminal, facilitating the terminal operation and line management. During installation, the wire nose or the PCB can be directly connected through the terminal fastener, facilitating installation. Terminals of different polarities, such as positive and negative terminals, are placed on both sides of the insulating partition plate 205. In the subsequent working process, the current is transmitted through the terminal, the insulating partition plate 205 effectively isolates the terminals of different polarities to prevent short circuit, ensures stable transmission of the current, and ensures normal operation of the power connector.

[0052] In the embodiment, the arrangement of the terminal slot 204 makes the installation of the terminal more standardized and orderly, avoids potential risks caused by disordered lines, and facilitates subsequent maintenance and repair, enabling quick positioning and processing of line problems. The insulating partition plate 205 separates the terminals of different polarities to prevent accidental contact between lines of different polarities, effectively enhances the insulation performance of the power connector, greatly reduces the probability of short circuit failure, and improves the stability and reliability of power transmission.

[0053] As shown in Figure 6 and Figure 7 In a preferred example, the socket 2 includes a first housing 201 and a rear cover 202, the first housing 201 is provided with a clamping groove 2012, the rear cover 202 is provided with a clamping buckle 2021 matched with the clamping groove 2012, the insulating partition plate 205 includes a plug plate 2013 arranged on the first housing 201 and a plug slot 2022 arranged on the rear cover 202, and the plug plate 2013 and the plug slot 2022 are connected in plug-in mode.

[0054] When the socket 2 is assembled, first, the rear cover 202 provided with the slot 2022 is docked with the first shell 201 with the clamping groove 2012. After the alignment position, the buckle 2021 on the rear cover 202 is clamped into the clamping groove 2012 of the first shell 201, and the first shell 201 is connected with the rear cover 202 as the buckle 2021 is tightly engaged with the clamping groove 2012. At the same time, the plugboard 2013 provided on the first shell 201 is inserted into the slot 2022 on the rear cover 202. During the insertion process, the plugboard 2013 is tightly fitted with the slot 2022, and the insulation partition plate 205 is assembled.

[0055] In the embodiment, the first shell 201 and the rear cover 202 are connected through the clamping connection of the clamping groove 2012 and the buckle 2021, so that the overall structure of the socket 2 is firm, effectively resisting external force impact, reducing the risk of damage to internal components caused by collision. In terms of insulation performance guarantee, the plug-in connection mode of the plugboard 2013 and the slot 2022 ensures the installation precision and stability of the insulation partition plate 205, which can more effectively separate the wiring terminals of different polarities, further improve the insulation performance, and reduce the hidden danger of short circuit. In addition, this modular assembly design simplifies the assembly process of the socket 2, reduces the production difficulty and cost, and is convenient for large-scale production and manufacturing, and also facilitates the replacement and maintenance of internal components of the socket 2.

[0056] The above only describes the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A three-core power connector, characterized by, The utility model relates to a plug and socket, the plug is provided with a connecting sleeve, the connecting sleeve is provided with a radial contraction part, the radial contraction part is provided with a plurality of telescopic openings, the connecting sleeve is provided with a cable sealing ring, the connecting sleeve is provided with a tail cover, the tail cover is provided with a radial tightening part, the radial tightening part gradually reduces from one end to the other end.

2. A three-core power connector as claimed in claim 1, wherein The telescopic opening is obliquely arranged.

3. A three-conductor power connector as recited in claim 1, wherein, The radial contraction part is provided with a chamfer.

4. A three-conductor power connector as recited in claim 1, wherein, The radial tightening part is provided with a spiral convex strip.

5. A three-conductor power connector as recited in claim 1, wherein, The cable sealing ring is provided with a waterproof film.

6. A three-conductor power connector as recited in claim 1, wherein, The plug is provided with a first sealing ring, and the plug-in end of the socket abuts against the first sealing ring.

7. A three-conductor power connector as recited in claim 1, wherein, The socket is provided with a connecting flange, and the connecting flange is provided with a second sealing ring.

8. A three-conductor power connector as recited in claim 1, wherein, The socket is provided with a wiring groove for accommodating a wiring terminal, and the socket is provided with a wiring fastener for connecting the wiring terminal at the wiring groove.

9. A three-core power connector as claimed in claim 8, wherein, The wiring groove is provided with an insulating partition plate, and wiring terminals of different polarities are arranged on the two sides of the insulating partition plate.

10. A three-core power connector as claimed in claim 9, wherein The socket comprises a first shell and a rear cover, the first shell is provided with a clamping groove, the rear cover is provided with a buckle clamped with the clamping groove, the insulating partition plate comprises a plug-in board arranged on the first shell and a plug-in slot arranged on the rear cover, and the plug-in board and the plug-in slot are connected in plug-in mode.

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