A novel three-way electrical connector

By designing a novel three-way electrical connector, a direct connection between a photovoltaic AC connector and a three-way electrical connector is achieved using a snap-fit ​​and a sealing ring. This solves the problems of cumbersome connection operations and poor safety and reliability in existing technologies, and enables convenient and safe transmission of electrical signals.

CN224582580UActive Publication Date: 2026-07-31QIANHAI JUYING (SHENZHEN) PRECISION TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
QIANHAI JUYING (SHENZHEN) PRECISION TECH CO LTD
Filing Date
2025-08-18
Publication Date
2026-07-31

AI Technical Summary

Technical Problem

The existing connection between photovoltaic AC connectors and T-connectors is cumbersome and has poor safety and reliability, requiring an adapter to convert them.

Method used

A novel three-way electrical connector is designed to achieve reliable connection between the connector, housing, and photovoltaic AC connector through snap-fit ​​and sealing ring, eliminating the need for adapters and ensuring stable transmission of electrical signals using T-shaped conductive parts and fastening components.

Benefits of technology

It enables convenient, safe and reliable connection between photovoltaic AC connectors and three-way electrical connectors, making electrical signal transmission faster and safer, and eliminating the need for adapters.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model provides a novel three-way electrical connector, including a housing, a plurality of T-shaped conductive elements disposed within the housing, and a connector disposed on the side of the housing. One end of each T-shaped conductive element passes through the connector and is electrically connected to a photovoltaic AC connector. The connector and the photovoltaic AC connector are detachably connected. Fastening components for securing cables are provided at both ends of the housing. The core wires in the cable are detachably connected to the other two ends of the T-shaped conductive elements. In this novel three-way electrical connector, one end of the connector is connected to the housing via a snap-fit ​​first, and the other end of the connector is connected to the photovoltaic AC connector via a snap-fit ​​second. The use of sealing rings one and two improves the connection effect, eliminating the need for an adapter to connect the photovoltaic AC connector and the three-way electrical connector, making the transmission of electrical signals more convenient, faster, safer, and more reliable.
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Description

Technical Field

[0001] This utility model relates to the field of connector technology, specifically to a novel three-way electrical connector. Background Technology

[0002] A three-way electrical connector is a connection device with three conductive channels, used as an electronic component to achieve multi-directional line shunting. It is mainly used to divide a main wiring harness into multiple branch lines, while also serving as a fixed terminal. It is primarily used for simultaneous signal transmission, power supply, and shielding protection, and is widely used in electronic equipment, industrial control, and special applications. A photovoltaic AC connector is a component used at the AC output end of an inverter in a photovoltaic power generation system. It is mainly used to connect the inverter to the power grid or load equipment to achieve safe power transmission. The female connector structure of the photovoltaic AC connector is shown in the attached figure. Figure 6 As shown in Figure 5, three wires (live wire, neutral wire, and ground wire) achieve stable AC power transmission through a photovoltaic AC three-core connector. The three-way connector can split one input into two outputs. When existing photovoltaic AC connectors are connected to three-way connectors, conversion adapters are often required to achieve multi-component connection or branch line integration of the inverter AC terminal in the photovoltaic system.

[0003] However, in the above-mentioned prior art, when using a conversion adapter to connect the photovoltaic AC connector and the three-way connector, the operation is not only cumbersome, but the connection safety and reliability are also poor. This solution addresses this technical problem. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a novel three-way electrical connector. One end of the connector is connected to the housing via a snap-fit ​​first, and the other end is connected to a photovoltaic AC connector via a snap-fit ​​second. A sealing ring first improves the sealing effect between the housing and the connector, while a sealing ring second improves the connection effect between the connector and the photovoltaic AC connector. This eliminates the need for a converter to connect the photovoltaic AC connector and the three-way electrical connector, thereby splitting one input electrical signal into two outputs, making the transmission of electrical signals more convenient, faster, safer, and more reliable.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a novel three-way electrical connector, including a housing, and further including a plurality of T-shaped conductive elements respectively disposed in the housing, and a connector disposed on the side of the housing, one end of the plurality of T-shaped conductive elements passing through the connector and electrically connected to a photovoltaic AC connector, the connector being detachably connected to the photovoltaic AC connector, fastening components for fastening cables being respectively disposed at both ends of the housing, and the core wires in the cable being detachably connected to the other two ends of the T-shaped conductive elements.

[0006] The side of the housing is provided with a receiving groove for accommodating the connector, and the side of the housing is also provided with a bayonet that communicates with the receiving groove. One end of the connector is provided with two buckles that can be detachably connected to the bayonet, and the other end of the connector is provided with a buckle that can be detachably connected to the photovoltaic AC connector.

[0007] A sealing ring one is provided on the outer side of one end of the connector, which is in close contact with the inner side of the receiving groove, and a sealing ring two is provided on the outer side of the other end of the connector. The sealing ring two seals between the connector and the photovoltaic AC connector.

[0008] The T-shaped conductive component includes a conductive post that passes through both ends of the housing and a conductive rod connected to the side of the conductive post. The side of the conductive rod is provided with a boss. One end of the connector is detachably abutted against the boss. The conductive rod passes through the connector and is electrically connected to the photovoltaic AC connector.

[0009] The T-shaped conductive element is provided in three parts. The conductive rods of the three T-shaped conductive elements are the input terminals of the neutral wire, the live wire, and the ground wire, respectively, and the two ends of the conductive post are the output terminals of the neutral wire, the live wire, and the ground wire, respectively.

[0010] The conductive post has grooves at both ends for accommodating the core wire of the cable, and screw holes for pressing the wire are provided on the side of the conductive post. Screws for pressing the core wire are inserted into the screw holes.

[0011] The side of the housing is provided with a clearance groove that allows the screw to pass through.

[0012] The housing has external threads at both ends. The fastening assembly includes a support sleeve with one end threaded to the housing and a fastening nut with one end threaded to the support sleeve. The other end of the support sleeve is provided with an array of clamping plates. The cable passes through the clamping plates. The other end of the fastening nut has a tapered surface on its inner side for pressing the clamping plates onto the cable.

[0013] The shell is made of a high thermal conductivity insulating material, and the side of the shell is provided with a number of heat dissipation grooves.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] (1) One end of the connector is connected to the housing via buckle one, and the other end of the connector is connected to the photovoltaic AC connector via buckle two. The sealing effect between the housing and the connector is better through sealing ring one, and the connection effect between the connector and the photovoltaic AC connector is better through sealing ring two. The photovoltaic AC connector and the three-way connector can be connected without the need for conversion connector, thereby realizing the conversion of one electrical signal input into two outputs, making the transmission of electrical signals more convenient, faster, safer and more reliable.

[0016] (2) Both the conductive rod and the conductive post are made of rigid conductive material. The side of the conductive post is provided with an installation groove. One end of the conductive rod is inserted into the installation groove of the conductive post and the boss is pressed by the connector, so that the connection between the conductive post and the conductive rod of the T-shaped conductive part is more firm and reliable.

[0017] (3) The housing is made of a high thermal conductivity insulating material. Several heat dissipation slots are arranged on the side of the housing. The heat generated inside the connector is dissipated through the heat dissipation fins between the heat dissipation slots, making the use of the connector safer and more reliable.

[0018] (4) The housing is equipped with a T-shaped conductive component formed by connecting a conductive rod and a conductive post. The core wire in the wire groove is pressed by inserting a screw into the screw hole of the conductive post. The clamping plate is closed by tightening the fastening nut, thereby pressing the cable. The connection between the cable and the connector is convenient, quick and firm. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall external structure of this utility model;

[0020] Figure 2 This is an exploded view of the structure of this utility model;

[0021] Figure 3 This is a structural schematic diagram of the connector of this utility model;

[0022] Figure 4 This is a schematic diagram of the internal structure of the shell of this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the T-shaped conductive component of this utility model;

[0024] Figure 6 This is a schematic diagram of the connection structure between this utility model and the cable.

[0025] In the diagram: 1. Housing; 11. Receiving groove; 12. Bayonet; 13. Clearance groove; 14. Heat dissipation groove; 2. T-shaped conductive component; 21. Conductive post; 211. Wire groove; 212. Screw hole; 22. Conductive rod; 221. Boss; 3. Connector; 31. Clip one; 32. Clip two; 33. Sealing ring one; 34. Sealing ring two; 4. Fastening assembly; 41. Support sleeve; 411. Clamping piece; 42. Fastening nut; 5. Photovoltaic AC connector; 6. Cable; 61. Core wire. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0027] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0028] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0029] In one embodiment, see Figures 1-6A novel three-way electrical connector includes a housing 1, and a plurality of T-shaped conductive elements 2 respectively disposed within the housing 1, and a connector 3 disposed on the side of the housing 1. One end of the plurality of T-shaped conductive elements 2 passes through the connector 3 and is electrically connected to a photovoltaic AC connector 5. The connector 3 is detachably connected to the photovoltaic AC connector 5. Fastening components 4 for fastening cables 6 are respectively disposed at both ends of the housing 1. The core wires 61 in the cables 6 are detachably connected to the other two ends of the T-shaped conductive elements 2.

[0030] Specifically, one end of the T-shaped conductive element 2 is the input end, and the other two ends are the output ends. The electrical signal is split through the T-shaped conductive element 2.

[0031] Furthermore, the side of the housing 1 is provided with a receiving groove 11 for accommodating the connector 3, and the side of the housing 1 is also provided with a bayonet 12 communicating with the receiving groove 11. One end of the connector 3 is provided with two snap fasteners 31 that can be detachably connected to the snap fasteners 12, and the other end of the connector 3 is provided with a snap fastener 32 that can be detachably connected to the photovoltaic AC connector 5.

[0032] Understandably, the connector 3 facilitates the installation of the T-shaped conductive part 2 and the detachable connection of the bayonet 12 and the first buckle 31 facilitates the maintenance of the three-way connector. The second buckle 32 is compatible with the photovoltaic AC connector 5, so the connection between the three-way connector and the photovoltaic AC connector 5 can be achieved without the use of a conversion adapter.

[0033] One end of the connector 3 is provided with a sealing ring 33 that fits tightly against the inside of the receiving groove 11. The other end of the connector 3 is provided with a sealing ring 34. The sealing ring 34 seals between the connector 3 and the photovoltaic AC connector 5. Specifically, the sealing performance of the connection is improved by setting the sealing ring 33 and the sealing ring 34, and the waterproof and dustproof effect is better.

[0034] The T-shaped conductive component 2 includes a conductive post 21 extending through both ends of the housing 1 and a conductive rod 22 connected to the side of the conductive post 21. The side of the conductive rod 22 is provided with a boss 221. One end of the connector 3 is detachably abutted against the boss 221. The conductive rod 22 passes through the connector 3 and is electrically connected to the photovoltaic AC connector 5. Specifically, both the conductive rod 22 and the conductive post 21 are made of rigid conductive material. The side of the conductive post 21 is provided with a mounting groove. One end of the conductive rod 22 is inserted into the mounting groove of the conductive post 21 and the boss 221 is pressed by the connector 3, thereby making the connection between the conductive post 21 and the conductive rod 22 of the T-shaped conductive component 2 more secure and reliable.

[0035] In another embodiment, three T-shaped conductive elements 2 are provided, with the conductive rods 22 of the three T-shaped conductive elements 2 being the input terminals of the neutral wire, the live wire, and the ground wire, respectively, and the two ends of the conductive post 21 being the output terminals of the neutral wire, the live wire, and the ground wire, respectively.

[0036] Furthermore, the conductive post 21 has a groove 211 at each end for accommodating the core wire 61 in the cable 6, and a screw hole 212 for pressing the wire is provided on the side of the conductive post 21. A screw for pressing the core wire 61 is inserted in the screw hole 212.

[0037] It is understandable that the side of the housing 1 is provided with a relief groove 13 that allows screws to pass through. The relief groove 13 facilitates the guidance of the screws so that they can be inserted into the screw hole 212.

[0038] The housing 1 has external threads at both ends. The fastening assembly 4 includes a support sleeve 41 with one end threaded to the housing 1 and a fastening nut 42 with one end threaded to the support sleeve 41. The other end of the support sleeve 41 is provided with an array of clamping pieces 411. The cable 6 passes through the clamping pieces 411. The inner side of the other end of the fastening nut 42 is provided with a tapered surface for pressing the clamping pieces 411 onto the cable 6.

[0039] The housing 1 is made of a high thermal conductivity insulating material, specifically, including aluminum nitride, boron nitride, etc. The side of the housing 1 is provided with several heat dissipation slots 14, and heat dissipation fins are formed between two adjacent heat dissipation slots 14. Heat is dissipated from the inside of the housing 1 through the heat dissipation fins.

[0040] The specific working process of this utility model:

[0041] In use, after passing the cable 6 through the fastening nut 42 and the support sleeve 41 in sequence, strip the insulation of each core wire 61 in the cable 6 and insert it into the wire groove 211 of the conductive post 21. Then, press each core wire 61 tightly through the screw that passes through the screw hole 212 through the relief groove 13 to complete the installation of the cable 6. Put the connector 3 on the outside of the three conductive rods 22 and push the first buckle 31 into the bayonet 12. At this time, the connector 3 is firmly connected to the housing 1. The housing 1 and the connector 3 are firmly connected by the first sealing ring 33. Then, insert the second buckle 32 into the photovoltaic AC connector 5 so that the conductive rod 22 is connected to the photovoltaic AC connector 5, and the connection between the photovoltaic AC connector 5 and the three-way power connector is completed.

[0042] One end of connector 3 is connected to the bayonet 12 of housing 1 via buckle 31, and the other end of connector 3 is connected to photovoltaic AC connector 5 via buckle 32. Sealing ring 33 improves the sealing effect between housing 1 and connector 3, and sealing ring 34 improves the connection effect between connector 3 and photovoltaic AC connector 5. Photovoltaic AC connector 5 and three-way electrical connector can be connected without the need for conversion connectors, thereby realizing the splitting of one electrical signal input into two outputs, making the transmission of electrical signals more convenient, faster, safer and more reliable.

[0043] The housing 1 is provided with a T-shaped conductive component 2 formed by connecting a conductive rod 22 and a conductive post 21. The core wire 61 in the wire groove 211 is pressed by inserting a screw into the screw hole 212 of the conductive post 21. The clamping piece 411 is closed by tightening the fastening nut 42, thereby pressing the cable 6. The connection between the cable 6 and the connector is convenient, quick and firm and reliable.

[0044] The housing 1 is made of a high thermal conductivity insulating material. Several heat dissipation slots 14 are arranged on the side of the housing 1. The heat generated inside the three-way connector is dissipated through the heat dissipation fins between the heat dissipation slots 14, making the use of the three-way connector safer and more reliable.

[0045] Technical features not described in detail in this solution are based on conventional operations and general understanding of those skilled in the art, and are therefore not elaborated upon here. Technical features not described in this utility model can be implemented using existing technology, and will not be repeated here. Of course, the above description is not intended to limit this utility model, nor is it limited to the examples given above. Any changes, modifications, additions, or substitutions made by those skilled in the art within the scope of this utility model should also fall within the protection scope of this utility model.

[0046] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A novel three-way electrical connector, comprising a housing (1), characterized in that, It also includes a plurality of T-shaped conductive elements (2) respectively disposed in the housing (1) and a connector (3) disposed on the side of the housing (1). One end of the plurality of T-shaped conductive elements (2) passes through the connector (3) and is electrically connected to the photovoltaic AC connector (5). The connector (3) is detachably connected to the photovoltaic AC connector (5). Fastening components (4) for fastening cables (6) are respectively disposed at both ends of the housing (1). The core wires (61) in the cable (6) are detachably connected to the other two ends of the T-shaped conductive elements (2).

2. The three-way electrical connector according to claim 1, characterized in that, The side of the housing (1) is provided with a receiving groove (11) for accommodating the connector (3). The side of the housing (1) is also provided with a bayonet (12) communicating with the receiving groove (11). One end of the connector (3) is provided with two buckles (31) that can be detachably connected to the bayonet (12). The other end of the connector (3) is provided with a buckle (32) that can be detachably connected to the photovoltaic AC connector (5).

3. The three-way electrical connector according to claim 2, characterized in that, One end of the connector (3) is provided with a sealing ring (33) that fits tightly against the inner side of the receiving groove (11), and the other end of the connector (3) is provided with a sealing ring (34). The sealing ring (34) seals between the connector (3) and the photovoltaic AC connector (5).

4. The three-way electrical connector according to claim 1, characterized in that, The T-shaped conductive component (2) includes a conductive post (21) that passes through both ends of the housing (1) and a conductive rod (22) connected to the side of the conductive post (21). The side of the conductive rod (22) is provided with a boss (221). One end of the connector (3) is detachably abutted against the boss (221). The conductive rod (22) passes through the connector (3) and is electrically connected to the photovoltaic AC connector (5).

5. The three-way electrical connector according to claim 4, characterized in that, The T-shaped conductive element (2) is provided in three parts. The conductive rods (22) of the three T-shaped conductive elements (2) are the input ends of the neutral wire, the live wire and the ground wire, respectively. The two ends of the conductive post (21) are the output ends of the neutral wire, the live wire and the ground wire, respectively.

6. The three-way electrical connector according to claim 5, characterized in that, The conductive post (21) has a groove (211) at each end for accommodating the core wire (61) in the cable (6). The side of the conductive post (21) has a screw hole (212) for pressing the wire. A screw for pressing the core wire (61) is inserted in the screw hole (212).

7. The three-way electrical connector according to claim 6, characterized in that, The side of the housing (1) is provided with a clearance groove (13) that allows the screw to pass through.

8. The three-way electrical connector according to claim 1, characterized in that, The housing (1) has external threads at both ends. The fastening assembly (4) includes a support sleeve (41) with one end threaded to the housing (1) and a fastening nut (42) with one end threaded to the support sleeve (41). The other end of the support sleeve (41) is provided with an array of clamping pieces (411). The cable (6) passes through the clamping pieces (411). The other end of the fastening nut (42) has a tapered surface on its inner side for pressing the clamping pieces (411) onto the cable (6).

9. The three-way electrical connector according to claim 1, characterized in that, The housing (1) is made of a highly thermally conductive insulating material, and the side of the housing (1) is provided with a number of heat dissipation grooves (14).