CN102403390A

CN102403390A - Connecting box of solar photovoltaic assembly

Info

Publication number: CN102403390A
Application number: CN2011103894708A
Authority: CN
Inventors: 王军华; 叶科华; 陆红雨
Original assignee: CHANGSHU HONGLIN CONNECTING TECHNOLOGY Co Ltd
Current assignee: CHANGSHU HONGLIN CONNECTING TECHNOLOGY Co Ltd
Priority date: 2011-11-30
Filing date: 2011-11-30
Publication date: 2012-04-04

Abstract

The invention relates to a connecting box of a solar photovoltaic assembly, which belongs to the technical field of the solar photovoltaic assembly. The connecting box comprises a box body with a box cavity; the two ends of the box body are provided with a power circuit interface respectively; and a lead-out cable insertion cavity of each power circuit interface is communicated with the box cavity. The connecting box is characterized in that: one end of the lead-out cable insertion cavity towards the box cavity is narrowly reduced to form a sheath blocking platform. The advantages are that: because one end of the lead-out cable insertion cavity towards the box cavity is narrowly reduced to form a sheath blocking platform, when the lead-out cable is inserted in the box cavity through the lead-out cable insertion cavity of the power circuit interface to be connected with an electric connection terminal in the box cavity, the insulation sheath of the lead-out cable is blocked by the sheath blocking platform, while the cable core of the lead-out cable can reach the electric connection terminal, so that the insert depth of the lead-out cable to the box cavity can be controlled, reliable fixation between the cable core of the lead-out cable and the electric connection terminal can be ensured, and the electric connection terminal can be prevented from damaging the insulation protection layer of the lead-out cable.

Description

The solar photovoltaic assembly terminal box

Technical field

The invention belongs to the solar photovoltaic assembly technical field, be specifically related to a kind of solar photovoltaic assembly terminal box

Background technology

such as industry knowledge, the solar photovoltaic assembly terminal box is the transition member between solar module and solar charging device, be output sun-generated electric power vitals.In disclosed Chinese patent document, can be seen in the technical information of relevant solar photovoltaic assembly terminal box in a large number; Slightly with give an example like the public all solar energy photovoltaic metallic wiring box of: Wiring box for solar photovoltaic electrification component, the CN201075856Y that the terminal box of the output line of the solar energy module that the structure-improved of the Wiring box for solar photovoltaic electrification component that publication number CN101442280A recommends, the solar junction box that CN2716748Y provides, CN101138098A introduce and the installation method of this terminal box, CN200941388Y disclose, solar photovoltaic metallic wiring box that CN101286626A releases, solar-energy photo-voltaic cell system that CN101459392A discloses with terminal box and CN201656368U, CN201656369U, CN201562929U, or the like.

Logical fraud below the solar photovoltaic assembly terminal box that gives an example above being not limited to exists: outgoing cable is difficult to rightly and the electric connection terminal crimping, and it is uncontrollable that the core (also claiming cable core) that is embodied in outgoing cable inserts the degree of depth that is mounted on the electric connection terminal place in the box body.If inserted dark (promptly inserting excessive); The insulation sheath that is used for to undermine outgoing cable on the electric connecting terminal so with the dentation bead of the cable core secure fixation of outgoing cable; And cause the waste of outgoing cable, and the crimping resistance between outgoing cable and the electric connection terminal is increased; Otherwise,, can not guarantee the connection reliability between outgoing cable and the electric connection terminal so if the cable core of outgoing cable inserts the degree of depth in the box body too short (be not in place or claimed shallow).

In view of above-mentioned prior art, be necessary to improve, for this reason, the applicant has done useful design, and the technical scheme that will introduce below produces under this background

Summary of the invention

task of the present invention be to provide a kind of help to outgoing cable be inserted into the insertion extent control in the box body and use ensure with box body in electric connection terminal connection reliability and avoid electric connection terminal to undermine the solar photovoltaic assembly terminal box of the insulation sheath of outgoing cable.

task of the present invention is accomplished like this; A kind of solar photovoltaic assembly terminal box; Comprise box body with box chamber; Respectively constitute a power circuit interface at the two ends of this box body, the outgoing cable of each power circuit interface inserts the chamber and communicates with described box chamber, is characterised in that: said outgoing cable inserts the chamber and constitutes a sheath towards narrow the contracting of an end in said box chamber and keep off platform.

technical scheme provided by the invention constitutes sheath retaining platform owing to the outgoing cable with the power circuit interface inserts the chamber towards narrow the contracting of an end in box chamber; Thereby, outgoing cable inserts the box chamber when being connected with the electric connection terminal that is positioned at the box chamber when inserting the chamber through the outgoing cable of power circuit interface; The insulation sheath of outgoing cable just suffers stopping of sheath retaining platform; The cable core of outgoing cable then can arrive aforesaid electric connection terminal; Therefore the may command outgoing cable is inserted into the degree of depth in the box chamber, both can ensure the cable core and the electric connection terminal secure fixation of outgoing cable, can prevent that again electric connection terminal from undermining the insulation sheath of outgoing cable.

Description of drawings

Fig. 1 is the embodiments of the invention structure chart.

Fig. 2 is an application examples sketch map of the present invention.

Embodiment

Fig. 1 is asked for an interview in , has provided by metal such as aluminium alloy or plastic production and box body 1 that have box chamber 11, and the shape of box body 1 and size do not receive the diagram restriction.Understand technology contents of the present invention for the ease of the public, in Fig. 1, also show one group of electrical connector that box body 1 disposes 2, one group of bypass diode 3 and a pair of outgoing cable joint 4 under user mode.Respectively be outward extended with a power circuit interface 12 at the two ends of box body 1 and in the position to correspond to each other, each power circuit interface 12 has outgoing cable and inserts chamber 121.As the technical essential of technical scheme provided by the invention, outgoing cable is inserted chamber 121 and is shunk and constitute a sheath retaining platform 1211 just as barricade towards the diameter of an end of box body 1.Undoubtedly; The diameter (internal diameter) in the core hole 12111 of sheath retaining platform 1211 is littler than the diameter (internal diameter) in the slotting chamber 121 of outgoing cable; So; When revolving with the screw thread docked mode together with outgoing cable 41, illustrated outgoing cable joint 4 is fitted on the 12 last times of power circuit interface that have external screw thread 122 on the outer wall; And when the cable core that makes outgoing cable 41 probeed in the box chamber 11 with electrical connector 2 fixedly, the insulation sheath of outgoing cable 41 just suffered stopping of sheath retaining platform 1211, the interior phenomenon in box chamber 11 can not occur excessively inserting.Yet, because the cable core 411 of outgoing cable 41 has been peeled off the insulation sheath, therefore can successfully be stretched over electrical connector 2 through core hole 12111, by the core card base 21 on the electrical connector 2 that cable core 411 is fixing.

can be known by above-mentioned explanation; With respect to prior art; If be provided with sheath retaining platform 1211, the degree that are inserted in the box chamber 11 of outgoing cable 41 can't reach the degree of making us expecting so, if inserted dark; Not only the insulating sleeve of outgoing cable 41 can suffer the damage of core card base 21, and can't guarantee the reliability that is electrically connected of cable core 411 and electrical connector 2; Shallow as if inserting, then be prone to the phenomenon that generation cable core 411 and core card base took off in 41 minutes.Though therefore the present invention program's structure is extremely simple, objectively plays beyond thought technique effect.

Fig. 2 is asked for an interview in ; The cable core 411 of outgoing cable 41 is stretched over the core card base 21 of electrical connector 2 and is fixed by core card base 21 through core hole 12111, and the end end face towards sheath retaining platform 1211 of outgoing cable 41 is stopped by sheath retaining platform 1211.

In sum, technical scheme provided by the invention has overcome the deficiency in the prior art, has accomplished the invention task, has embodied excellent technique effect, and therefore can yet be regarded as is a ultimate attainment scheme

Claims

1. A kind of solar photovoltaic assembly terminal box; Comprise box body (1) with box chamber (11); Respectively constitute a power circuit interface (12) at the two ends of this box body (1); The outgoing cable of each power circuit interface (12) inserts chamber (121) and communicates with described box chamber (11), it is characterized in that: said outgoing cable inserts chamber (121) and constitutes a sheath towards narrow the contracting of an end in said box chamber (11) and keep off platform (1211)