Patent Publication Number: US-10770847-B2

Title: High current DC dispersing and converging connector

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application claims priority to Chinese Patent Application No. 201811258916.1 with a filing date of Oct. 26, 2018. The content of the aforementioned applications, including any intervening amendments thereto, are incorporated herein by reference. 
     TECHNICAL FIELD 
     The disclosure relates to the field of connectors for solar panels, and particularly relates to a high current DC dispersing and then converging connector. 
     BACKGROUND OF THE PRESENT INVENTION 
     With the development of the society and the advancement of science and technology, environmentally-friendly and pure energy has gradually attracted human attention. As an environmentally-friendly and endlessly accessible new energy source, photovoltaics are valued by people. The photovoltaic panel is a common device for converting solar energy, and has high requirements for connectors during the use of the photovoltaic panel, which requires high electrical connection tightness, seal and firmness. 
     The existing electrical connector extension wires are widely used in connection carriers for photovoltaic panels and are exposed to the outdoors. However, in the existing industry, a high current DC electrical connector basically adopts single-input and single-output, and then the current converges through a convergence box, which is high in cost and complicated in installation. 
     How to reduce the market cost pressure by improving the structure of the existing high current DC single-input and single-output connector is a problem to be urgently solved by the applicant. 
     SUMMARY OF PRESENT INVENTION 
     Aiming at the defects in the prior art, the disclosure provides a high current DC dispersing and then converging connector. 
     In order to achieve the above aim, the technical solution adopted by the disclosure is as follows: a high current DC dispersing and converging connector comprises a dispersing and connecting terminal, a sheath I, a converging and connecting terminal and a sheath II, the dispersing and connecting terminal comprises three connecting ends I and a connecting end II; one connecting end I and the connecting end II are in the same horizontal plane; the other two connecting ends I are symmetrically fixed to the connecting end II; the sheath I is provided with three inserting ports I and an inserting port II; the sheath I is sleeved on an outer surface of the dispersing and connecting terminal; the three connecting ends I of the dispersing and connecting terminal are respectively arranged in the three inserting ports I; the tail of the connecting end II is provided with an inserting groove; the connecting end II is arranged in the inserting port II; the converging and connecting terminal is an umbrella-shaped copper-aluminum terminal; the umbrella end of the umbrella-shaped copper-aluminum terminal is inserted into and matched with the inserting groove; the sheath II is provided with two connecting ports; the sheath II is sleeved on an outer surface of the converging and connecting terminal; the umbrella end and a cable connecting end of the umbrella-shaped copper-aluminum terminal are respectively arranged in the two connecting ports; when the umbrella-shaped end is inserted into and fixed with the inserting groove, the inserting port II of the sheath I is inserted into and fixedly connected with the connecting port of the sheath II; and a seal ring is arranged at a contact position where the inserting port II and the connecting port are contacted. 
     With the technical solution of the disclosure, the following technical effects are produced: 1. the convergence and connection of multi-point dispersed current can be realized; and 2. the convergence box is avoided, and a connection space is saved; processing is more convenient, and processing time is also reduced. 
     In a further improvement, the top of the inserting port II is provided with a fool-proof convex strip; and the top of the connecting port is provided with a groove matched with the fool-proof convex strip. The arrangement of the fool-proof convex strip can prevent the connector from being inserted incorrectly. Once an error is generated, the sheath I and the sheath II cannot be inserted into and fixedly connected due to the arrangement of the fool-proof convex strip. 
     In a further improvement, the high current DC dispersing and converging connector further comprises a positioning clamping block; the positioning clamping block is provided with a positioning part I and a positioning part II; the positioning part I is clamped and fixed on the connecting end I which is in the same horizontal plane as the connecting end II; and the positioning part II is clamped and fixed on one of the other two connecting ends I. The design of the positioning clamping block can effectively prevent the connecting end I from being tilted and deformed after the connector is inserted and unplugged for multiple times, thereby ensuring the connection effect of the connector. 
     In a further improvement, the positioning clamping block is also provided with a positioning clamping plate; and the positioning clamping block is fixed into the sheath I through the positioning clamping plate. The positioning clamping plate is designed so that the positioning clamping block can be better clamped among the two connecting ends I and the sheath, thereby realizing more accurate and firmer positioning. 
    
    
     
       DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is an exploded diagram of a high current DC dispersing and converging connector; 
         FIG. 2  is a top view of a high current DC dispersing and converging connector; and 
         FIG. 3  is a structural schematic diagram when a dispersing and connecting terminal of a high current DC dispersing and converging connector is inserted into and fixed with a converging and connecting terminal. 
     
    
    
     DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS 
     The preferred embodiments of the disclosure are further described below with reference to the drawings. 
     As shown in  FIG. 1  to  FIG. 3 , a high current DC dispersing and converging connector comprises a dispersing and connecting terminal  1 , a sheath I  2 , a converging and connecting terminal  3 , a sheath II  4  and a positioning clamping block  5 . 
     The dispersing and connecting terminal comprises three connecting ends I  11  and a connecting end II  12 ; one connecting end I and the connecting end II are in the same horizontal plane; the other two connecting ends I are symmetrically fixed to the connecting end II; the sheath I  2  is provided with three inserting ports I  21  and an inserting port I  22 ; the sheath I is sleeved on an outer surface of the dispersing and connecting terminal; the three connecting ends I of the dispersing and connecting terminal are respectively arranged in the three inserting ports I; the tail of the connecting end II  12  is provided with an inserting groove  121 ; and the connecting end II 12  is arranged in the inserting port II  22 . 
     The converging and connecting terminal  3  is an umbrella-shaped copper-aluminum terminal; the umbrella end of the umbrella-shaped copper-aluminum terminal is inserted into and matched with the inserting groove; the sheath II  4  is provided with two connecting ports  41 ; the sheath I  2  is sleeved on an outer surface of the converging and connecting terminal; the umbrella end  31  and a cable connecting end  32  of the umbrella-shaped copper-aluminum terminal are respectively arranged in the two connecting ports  41 ; when the umbrella-shaped end is inserted into and fixed with the inserting groove, the inserting port II of the sheath I is inserted into and fixedly connected with the connecting port of the sheath II; and a seal ring  6  is arranged at a contact position where the inserting port II and the connecting port are contacted. The top of the inserting port II is provided with a fool-proof convex strip  23 ; and the top of the connecting port  41  is provided with a groove matched with the fool-proof convex strip. 
     The positioning clamping block  5  is provided with a positioning part I  51 , a positioning part II  52  and a positioning clamping plate  53 . The positioning part I  51  is clamped and fixed on the connecting end I which is in the same horizontal plane as the connecting end II; and the positioning part II is clamped and fixed on one of the other two connecting ends I. The positioning clamping block is fixed into the sheath I through the positioning clamping plate. 
     In order to better illustrate the technical solution of the disclosure, the design principle of the disclosure is described: in the technical solution, the inserting groove is milled at the tail of the dispersing and connecting terminal for facilitating current convergence; the converging and connecting terminal is designed into the umbrella-shaped copper-aluminum terminal; the umbrella-shaped end is combined with the inserting groove of the dispersing and connecting terminal; and the multi-path dispersed current is connected through the metal terminal of the electrical connector, and then is connected with a main trunk cable through the umbrella-shaped copper-aluminum terminal to complete the converging function of the dispersed current, so that multi-path currents are converged and then transmitted to the next device through one wire. 
     The above embodiments are only used to describe the technical concepts and features of the disclosure, and are intended to enable those of ordinary skill in the art to understand and implement the contents of the disclosure, not intended to limit the protection scope of the disclosure. Any equivalent variation or modification made in accordance with the spirit and essence of the disclosure shall be included in the protection scope of the disclosure.