CN216649620U - Cable photovoltaic junction box capable of rapidly replacing cables with various wire diameters - Google Patents

Abstract

The utility model discloses a photovoltaic junction box capable of quickly replacing cables with various wire diameters, which comprises an upper cover, a bottom box, a first metal terminal, a second metal terminal and a cable, wherein the bottom box is of a frame structure with a single-side opening, one end of the upper cover is hinged to the bottom box, the first metal terminal and the second metal terminal are fixedly connected into the bottom box, a high-elasticity wire sleeve is arranged on the bottom box, a metal elastic sheet buckle is arranged on the first metal terminal, and the cable penetrates through the wire sleeve and is clamped with the metal elastic sheet buckle of the first metal terminal. The utility model can quickly replace cables with various wire diameters, is convenient to maintain and has low use cost.

Description

Photovoltaic junction box capable of rapidly replacing cables with various wire diameters

Technical Field

The utility model relates to a junction box, and belongs to photovoltaic assembly accessories.

Background

Traditional photovoltaic terminal box mainly forms by upper cover and end box and inside metalwork equipment, and the upper cover mainly adopts the bolt to fix with end box. In the cable stretched into the end box, adopt welding form and metal terminal welding, to photovoltaic group under the environment of outdoor use, if discover the cable damage and when needing to change, if do not have dedicated instrument, can't change, need also longer change time, unable quick replacement cable even have the instrument. In addition, some junction boxes use non-detachable plastic buckles to fix the wires or directly weld the wires on the metal terminals of the junction box body by ultrasonic welding cables; if the cable is found to be damaged, only the junction box can be replaced.

Disclosure of Invention

The utility model aims to provide a photovoltaic junction box which can be used for rapidly replacing cables with various wire diameters, is convenient to maintain and is low in use cost.

In order to achieve the purpose, the technical scheme of the utility model is as follows: the utility model provides a but multiple line footpath cable photovoltaic terminal box of quick replacement, includes upper cover, end box, first metal terminal, second metal terminal and cable, and end box is single face open-ended frame structure, and upper cover one end articulates on end box, and first metal terminal and second metal terminal fixed connection are in end box, be equipped with the line cover of high elasticity on the end box, be equipped with metal shrapnel on the first metal terminal and detain, the cable passes the line cover to detain the joint with the metal shrapnel of first metal terminal.

Preferably, the rear side wall of the bottom box is provided with two opposite first clamping grooves, and one side of the upper cover is provided with two clamping columns which are back to back and hinged with the corresponding first clamping grooves. The upper cover is convenient to hinge with the bottom box, and the installation and the covering are convenient.

Preferably, the other side of the upper cover is provided with a buckle, a second clamping groove is formed in the corresponding position of the front side wall of the bottom box, a circle of waterproof ring is arranged on the upper cover, and a circle of waterproof ring clamping groove is formed in the bottom box. The upper cover and the bottom box cover to form a waterproof structure.

Preferably, the bottom box is provided with a cable ring with an annular notch, one end of the wire sleeve is a large-diameter end, the other end of the wire sleeve is a small-diameter end, and the large-diameter end is sleeved on the cable ring. The installation of the wire sleeve is convenient, and the waterproof structure is better.

Preferably, the inner wall of the wire sleeve of the bottom box is provided with a wire clamping groove, a wire clamp with a toothed groove is connected in the wire clamping groove in a sliding mode, and the cable penetrates through the toothed groove. The upper cover can abut against the wire clamp after being covered, the cable is clamped, the stress of the cable is eliminated, and the firmness of the cable is improved.

Preferably, the bottom case has a mounting screw hole for mounting the first metal terminal and the second metal terminal therein, and is fixed by a bolt. The metal terminal is convenient to install.

Preferably, the first metal terminal has two, and the one end of first metal terminal is for clamping the end, and the middle part has the round hole, and one side of the other end is equipped with first solder joint and second solder joint, two sinle silks are divided to the end of stretching into of cable, metal shrapnel buckle elasticity portion and opening, the sinle silk stretches into and clamps fixedly in the opening. The cable is convenient to connect, disassemble and replace.

Preferably, an overflow groove is arranged at the peripheral edge of the bottom box. The bottom box is bonded on the photovoltaic module, and redundant glue can overflow into the overflow groove, so that the pollution of the photovoltaic module is avoided.

After the structure is adopted, the high-elasticity wire sleeve is arranged on the bottom box, and the cable penetrates through the wire sleeve and then enters the inside of the bottom box. The wire sleeve is made of high-elasticity plastic, can stretch out and draw back along with the change of the wire diameter of the cable, plays a role in water prevention, and can be suitable for the wire diameter of the cable in a large range. And the cable is buckled with the metal shrapnel of the first metal terminal and is clamped, extra welding or crimping tools are not needed, the assembly of the cable can be completed only by pressing, the maintenance is convenient, and the use cost is low.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a schematic view of FIG. 1 with the upper cover open;

FIG. 3 is a schematic view of the back box of FIG. 2;

FIG. 4 is a schematic view of the upper cover of FIG. 2;

FIG. 5 is a schematic view of the wire sleeve of FIG. 2;

FIG. 6 is a schematic view of the line card of FIG. 2;

FIG. 7 is a schematic view of the first metal terminal and the metal dome buckle;

FIG. 8 is a schematic view of the installation of the metal dome buckle and the cable;

fig. 9 is a schematic backside view of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following examples, which are given in conjunction with the accompanying drawings.

In a first embodiment, referring to fig. 1 and 2, a photovoltaic junction box capable of rapidly replacing cables with various wire diameters comprises an upper cover 2, a bottom box 3, a first metal terminal 13, a second metal terminal 15 and a cable 4, wherein the bottom box 3 is a frame structure with a single-side opening. The rear side wall of the bottom box 3 is provided with two opposite first clamping grooves 8a, one side of the upper cover 2 is provided with two clamping columns 8 which are back to back and hinged with the corresponding first clamping grooves 8a, and the hinging can be completed only by clamping the two clamping columns 8 into the corresponding first clamping grooves 8a during the installation, so that a turnover structure is formed.

Referring to fig. 2 and 4, a buckle 10 is arranged on the other side of the upper cover 2, a second clamping groove 10a is arranged at a corresponding position on the front side wall of the bottom case 3, a circle of waterproof ring 9 is arranged on the upper cover 2, and a circle of waterproof ring clamping groove 9a is arranged on the bottom case 3. When the upper cover 2 needs to be covered, the buckle 10 and the second clamping groove 10a are buckled, and after the cover is closed, the waterproof ring 9 extends into the waterproof ring clamping groove 9a to form an airtight waterproof effect.

Referring to fig. 3 and 5, the bottom case 3 is provided with a cable ring 5a having an annular notch, one end of the cable sleeve 5 is a large diameter end 5b, the other end is a small diameter end 5c, and the large diameter end 5b is sleeved on the cable ring 5a, so that the annular notch can provide good air tightness. Because the wire sleeve 5 is a high-elasticity body and can be made of silica gel, the small-diameter end 5c can enable the cable between 5c and 5b to enter the junction box.

Referring to fig. 2 and 6, the bottom case 3 has a wire clamping slot 11b on the inner wall of the wire sleeve 5, a wire clip 11 with a toothed slot 11a is slidably connected in the wire clamping slot 11b, and the cable 4 passes through the toothed slot 11 a. During 4 entering terminal boxes of cable, later can be through the ply-yarn drill draw-in groove 11b at the terminal box inner wall, provide ply-yarn drill 11 card and go into, tooth-shaped groove 11a when upper cover 2 is closed, automatic shell of clenching 4 of cable plays 4 fixed and stress relief effect of cable, even cable 4 receives to drag, can not break away from yet.

Referring to fig. 3, 7 and 8, the inside of the back case 3 has three mounting screw holes 17a to which the first metal terminal 13 and the second metal terminal 15 can be mounted, and is fixed by bolts 17. The number of the first metal terminals 13 is two, and the second metal terminal 15 is located between the two first metal terminals 13. The second metal terminal 15 is directly fixed by the bolt 17, and the first metal terminal 13 is firstly assembled with the metal spring buckle 12 and then fixed by the bolt 17.

Referring to fig. 7, one end of the first metal terminal 13 is a fastening end 13a for fastening the metal dome buckle 12. The first metal terminal 13 has a circular hole 13b in the middle for fixing a bolt 17. One side of the other end of the first metal terminal 13 is provided with a first welding spot 13c for inserting a bus bar of the photovoltaic module into the opening hole 3a of the junction box bottom case 3 after passing through the opening hole. And a second welding point 13d for welding the two end pins of the diode 16 in a positioning manner. The metal dome buckle 12 has an elastic portion 12b and an opening portion 12a, and the metal dome buckle 12 is formed by bending a sheet-like structure and then extending a section thereof into the opening portion 12 a. When the metal elastic sheet buckle 12 is installed, an external force is applied to the elastic part 12b of the metal elastic sheet buckle 12 to open the opening of the elastic part 12a, the metal elastic sheet buckle is clamped to the 13a part of the metal terminal 13, and the metal elastic sheet buckle 12 is automatically fastened with the metal terminal 13 to form an assembly part after the external force is removed. And then, the metal terminal 13 is screwed through the round hole 13b and locked on the mounting position 17a of the bottom case 3.

Referring to fig. 8, the cable 4 has two cores 4a at the insertion end, and during installation, the elastic portion 12b of the metal shell fragment buckle 12 is pressed downward to open the opening of the opening 12a, so that the cores 4a are inserted into the opening 12a, and the opening 12a is closed by removing the applied external force, so that the cores 4a are connected with the metal terminal 13 by crimping.

Referring to fig. 9, an overflow groove 7 is provided at the outer circumferential edge of the bottom 6 of the bottom case 3. When the adhesive is coated on the bottom 6 of the junction box, the excessive adhesive in the process of bonding the photovoltaic module can be collected by the overflow groove 7, and the pollution of the module can not be caused.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make various changes and modifications without departing from the inventive concept, and these changes and modifications are all within the scope of the present invention.

Claims (8)

1. The utility model provides a but multiple line footpath cable photovoltaic terminal box of quick replacement, includes upper cover (2), end box (3), first metal terminal (13), second metal terminal (15) and cable (4), and end box (3) are single face open-ended frame structure, and upper cover (2) one end articulates on end box (3), and first metal terminal (13) and second metal terminal (15) fixed connection are in end box (3), its characterized in that: the cable connector is characterized in that a high-elasticity wire sleeve (5) is arranged on the bottom box (3), a metal elastic sheet buckle (12) is arranged on the first metal terminal (13), and the cable (4) penetrates through the wire sleeve (5) and is clamped with the metal elastic sheet buckle (12) of the first metal terminal (13).

2. The quick-replaceable multi-wire-diameter cable photovoltaic junction box of claim 1, wherein: the rear side wall of the bottom box (3) is provided with two opposite first clamping grooves (8a), and one side of the upper cover (2) is provided with two clamping columns (8) which are back to back and hinged with the corresponding first clamping grooves (8 a).

3. The quick-change multi-wire-diameter cable photovoltaic junction box of claim 1, wherein: the waterproof box is characterized in that a buckle (10) is arranged on the other side of the upper cover (2), a second clamping groove (10a) is formed in the corresponding position of the front side wall of the bottom box (3), a circle of waterproof ring (9) is arranged on the upper cover (2), and a circle of waterproof ring clamping groove (9a) is formed in the bottom box (3).

4. The quick-change multi-wire-diameter cable photovoltaic junction box of claim 1, wherein: the cable sleeve is characterized in that a cable ring (5a) with an annular notch groove is arranged on the bottom box (3), one end of the cable sleeve (5) is a large-diameter end (5b), the other end of the cable sleeve is a small-diameter end (5c), and the large-diameter end (5b) is sleeved on the cable ring (5 a).

5. The quick-change multi-wire-diameter cable photovoltaic junction box of claim 1, wherein: the inner wall of the bottom box (3) positioned on the wire sleeve (5) is provided with a wire clamping groove (11b), a wire clamp (11) with a toothed groove (11a) is connected in the wire clamping groove (11b) in a sliding mode, and the cable (4) penetrates through the toothed groove (11 a).

6. The quick-change multi-wire-diameter cable photovoltaic junction box of claim 1, wherein: the bottom box (3) is internally provided with mounting screw holes (17a) for mounting a first metal terminal (13) and a second metal terminal (15), and is fixed by bolts (17).

7. The quick-change multi-wire-diameter cable photovoltaic junction box of claim 1, wherein: first metal terminal (13) have two, and the one end of first metal terminal (13) is for clamping end (13a), and the middle part has round hole (13b), and one side of the other end is equipped with first solder joint (13c) and second solder joint (13d), two sinle silks (4a) are divided to the end of stretching into of cable (4), metal shrapnel is detained (12) and is had elasticity portion (12b) and opening (12a), sinle silks (4a) stretch into opening (12a) interior card dress fixed.

8. The quick-change multi-wire-diameter cable photovoltaic junction box of claim 1, wherein: an overflow groove (7) is arranged at the peripheral edge of the bottom (6) of the bottom box (3).

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