CN202172077U - Solar junction box - Google Patents

Abstract

A solar junction box is disclosed, which comprises a wire holder and a cover body installed above the wire holder. The wire holder comprises a plurality of metallic gaskets and rectifying pieces for connecting the adjacent metallic gaskets. The metallic gasket is provided with an access part connected with an outside solar lug plate. The solar junction box is further provided with an elastic wire clamp for clamping the access part and the solar lug plate, the elastic wire clamp is an approximately delta-shaped elastic sheet with two buckled ends, and the wire holder is provided with an interference part pressing against the elastic wire clamp along an up-and-down direction to prevent the elastic wire clamp from loosening. Via the arrangement, the solar junction box is simple in structure and low in cost.

Description

Solar junction box

[technical field]

The relevant a kind of solar junction box of the utility model, relate in particular to a kind of simple in structure, lower-cost solar junction box.

[background technology]

The prior art relevant with the utility model can be consulted a kind of solar junction box that is disclosed for B number in the Chinese utility model patent CN101272039 of on April 14th, 2010 bulletin; It comprises box body, lid, junction block, metal connecting piece group, wiring joint; Wherein on box plate, set gradually and be distributed with junction block; Have on the junction block and supply to connect the metal connecting piece group of using; Box body and lid are involutory to be formed by connecting, and the box body side is distributed with the wiring joint that supplies connection plug to insert, and it is characterized in that being provided with heat radiating metal spare in the said junction block surrounding space; The access portion that said heat radiating metal spare is provided with the main part that is parallel to box plate, the connecting portion that is connected with wiring the end of a thread and is connected with extraneous solar cell lug plate, said access portion is perpendicular to said box plate.Said solar junction box also is provided with the elasticity wire clamp that is held in the access portion; Said elasticity wire clamp is a metallic elastic sheet that presents the σ font; An one of which metal vertical edges level is posted by said access portion; Its another free terminal is provided with the perforation that supply access portion and metal vertical edges end are upward through; Said metal vertical edges end is held in access portion on the inwall of said perforation, and at this moment, the lug plate of said extraneous solar cell can be clamped between the free terminal of said access portion and metal vertical edges.Yet; Said elastica is folded with the free terminal level of perforation and extends forward; At above-below direction; Said solar junction box is not provided with and stops that downwards this free terminal upwards breaks away from the stop part of access portion, and when extraneous solar energy lug plate was pulled out, the strength that the free terminal that said elastica is folded with perforation is pulled out the solar energy lug plate easily drove and moves upward; Thereby cause the elasticity wire clamp to damage separations that get loose of distortion or two ends, and then feasible can't be once more extraneous solar energy lug plate being fixedly connected in the said access portion.

Therefore, be necessary to provide a kind of structure improved solar junction box that has, to overcome above-mentioned defective.

[utility model content]

The purpose of the utility model is to provide a kind of solar junction box simple in structure, lower-cost.

For realizing above-mentioned purpose; The utility model adopts following technical scheme: a kind of solar junction box; The lid that comprises junction block and be installed on the junction block top; Said junction block comprises the rectification part of number of metal pad and connection adjacent metal pad, and said metallic gasket is provided with the access portion that is connected with extraneous solar energy lug plate, and said solar junction box also is provided with the elasticity wire clamp of clamping access portion and solar energy lug plate; Said elasticity wire clamp be one roughly be σ shape the two ends flexure strip that interlocks and hold, said junction block is provided with and compresses the interference part of elasticity wire clamp to prevent that the elasticity wire clamp from getting loose along the vertical direction.

Compared with prior art; The utlity model has following beneficial effect: the utility model solar junction box is through being provided with the interference part that compresses the elasticity wire clamp along the vertical direction on junction block; Thereby when extraneous solar energy lug plate is extracted the elasticity wire clamp; Said interference part can stop the distortion of elasticity wire clamp so that get loose, and then prevents the damage of elasticity wire clamp, has guaranteed that the solar energy lug plate can be connected with the access portion of solar junction box is stable; And the interference part directly is set on junction block, need not to lodge extra supplementary structure and stop that the elasticity wire clamp gets loose, simple in structure, cost is lower.

[description of drawings]

Fig. 1 is the stereogram of the utility model solar junction box.

Fig. 2 is another stereogram of the utility model solar junction box, shows the state that lid is opened.

Fig. 3 is the part three-dimensional exploded view of the utility model solar junction box.

Fig. 4 is the part three-dimensional exploded view of another angle of the utility model solar junction box.

Fig. 5 is the three-dimensional exploded view of the utility model solar junction box.

Fig. 6 is the three-dimensional exploded view of another angle of the utility model solar junction box.

Fig. 7 is the three-dimensional exploded view of an angle again of the utility model solar junction box.

Fig. 8 is the stereogram of the Wiring module in the utility model solar junction box.

Fig. 9 is the stereogram of the lid of the utility model solar junction box.

Figure 10 be among Fig. 1 solar junction box along the cutaway view of A-A line direction.

Figure 11 is the partial enlarged drawing of structure in Figure 10 dotted line circle.

[embodiment]

See also Fig. 1 to shown in Figure 11; The utility model solar junction box 100 is in order to connect solar cell (not shown) and transmission current, and said solar junction box 100 comprises junction block, is installed on the lid 2 of junction block top and the junction module 4 that connects junction block.Said junction block includes insulation box body 1 and is contained in the Wiring module 3 in the insulation box body 1.

See also Fig. 3 to shown in Figure 4, said Wiring module 3 comprises that the plastic cement plate 5, the edge that are rectangle buries the metallic gasket 6 that takes shape in the plastic cement plate 5 and the rectification part 7 of adjacent two metallic gaskets 6 of some connections.

See also Fig. 4 to shown in Figure 8, said plastic cement plate 5 is provided with body 50 that roughly is rectangular-shaped and the some hollow-out parts 51 that run through body 50 up and down.Said body 50 is provided with towards the upper surface 501 of lid 2 and the some radiating ribs 55 that project upwards from upper surface 501.In the utility model, said hollow-out parts 51 is provided with two along body 50 fore-and-aft directions, and said hollow-out parts 51 is extended so that plastic cement plate 5 front and back are broken as three sections along body 50 Widths.From front to back; Said body is provided with first the step down portion 52 and be positioned at the elastic clamping hook 53 of front center that is positioned at the front end both sides and runs through up and down for 50 first sections; Said elastic clamping hook 53 is first to extending below from body 50 front center; Bending extends upward again, and forms the outside hook part of level in free terminal.So be provided with, make said elastic clamping hook 53 have elastic deformation performance preferably, so for convenience detach.Said body is provided with for 50 second sections and is positioned at the center, and extends upward to support the bracing frame 502 of lid 2 from upper surface 501.Said body 50 is provided with a side and the upwardly extending jube 503 that is positioned at 50 second sections of bodies for the 3rd section; And some lattice-shapeds second portion 54 that steps down of depression from back to front; Step down for adjacent two second and be provided with partition wall 56 between the portion 54, top, said partition wall 56 rear end is provided with the breach 551 to lower recess.The upper surface 501 of plastic cement plate 5 is extended and be uniformly distributed in to said radiating ribs 55 from front to back, is arranged in parallel each other.In the solar junction box 100, some radiating ribs 55 are set on the upper surface 501 of said plastic cement plate 5 in the utility model to increase area of dissipation.

Said metallic gasket 6 be provided with connect junction module 4 and be contained in first step down connecting portion 61 in the portion 52, insert directions from connecting portion 61 along junction module 4 and extend back and inlay and bury the main part that takes shape in said body 50 in, and continue to extend back and be contained in the second 54 interior access portions 62 that are connected with territory extraneous solar cell (not shown) of portion that step down in autonomous body rear end.Said main part also is provided with the weld part 63 that is exposed in the said hollow-out parts 51.Said weld part 63 is provided with positioning convex point 64 outstanding on the autonomous agent subordinate direction, and said positioning convex point 64 projects upwards in said weld part 63 so that said rectification part 7 is positioned on the metallic gasket 6 in pairs.

Said solar junction box 100 also is provided with in order to the access portion 62 of clamping metallic gasket 6 and the elasticity wire clamp 9 of the lug plate (not shown) of extraneous solar cell.Said elasticity wire clamp 9 be one roughly be σ shape the two ends flexure strip that interlocks and hold, this elasticity wire clamp 9 comprises the first 90 of an approximate horizontal and from the reverse second portions 91 that extend of first 90 bending downwards.Said first 90 is provided with perforation 92 and horizontally extending free terminal.Said second portion 91 is roughly V-shaped and be positioned at first 90 belows, its end be provided be narrower than perforation 92 width slightly wear sheet 93, the said sheet 93 of wearing penetrates in the perforation 92.Said access portion 62 upwards vertically wore perforation 92 and was held between the said inwall of wearing sheet 93 territory perforation 92, so that elasticity wire clamp 9 is fixed on the plastic cement plate 5.When the lug plate (not shown) of said solar junction box 100 and solar cell when being connected; Moving perforation 92 positions through pushing and pressing second portion 91 can be plugged to said lug plate between perforation 92 inwalls and the access portion 62, can realize the electric connection of lug plate and access portion 62.

Said rectification part 7 is a diode in the present embodiment, is provided with the outward extending pin 71 from its both sides, and said pin 71 is welded in respectively between two positioning convex points 64 on the adjacent weld part 63.

See also Fig. 1 to Fig. 7; And combine shown in Figure 10; Said insulation box body 1 roughly is square box shape; It is provided with wall, said wall comprise two side 11, respectively connect antetheca 12 and the rear wall 13 of 11 front and back ends, two side, at the host cavity 10 between antetheca 12, rear wall 13 and the two side 11, be positioned at the diapire 14 of hollow out below the host cavity 10 and be set in parallel in antetheca 12 the place aheads and protection carriage 15 that two ends link to each other with two side 11, said protection carriage 15 T-shaped settings.Said antetheca 12 is provided with the groove 123 that supplies elasticity trip 53 butted towards the corresponding elastic clamping hook of a side of host cavity 10 53 places; Ginseng Fig. 6, said groove 123 and elastic clamping hook 53 mutual buckles are when needing because of terminal box 100 internal damage to change; Extraneous instrument capable of using (not shown) inwardly levers up elastic clamping hook 53; Make plastic cement plate 5 break away from insulation box bodys 1 thereby remove snap close, and then make terminal box 100 easy accessibility, for ease of maintenaince.

Said antetheca 12 also is provided with and lays respectively at its both sides wire connecting portion 121 of projection forward, and this wire connecting portion 121 has external screw thread and forms the wiring hole that front and back connect, and said wire connecting portion 121 is positioned at protection carriage 15 belows.Form the frame mouth shape accommodation space 122 that an opening makes progress between said protection carriage 15 and the said antetheca 12 and be contained in the Elastic buckle 151 in the accommodation space 122; Ginseng Figure 10 and Figure 11, the part that said Elastic buckle 151 self-shield carriages 15 are positioned at accommodation space 122 bottoms is extended from bottom to top.11 outsides, said two side are outwards outstanding respectively to be provided with the fin 111 that extends below on some with convenient said solar junction box 100 heat radiations, 11 inboards, said two side respectively in host cavity 10 projection be provided with the some positioning bars 112 that extend below to offset with plastic cement plate 5.Said rear wall 13 is provided with two pre-and post perforative through holes 131.Said diapire 14 be provided with two along the left and right sides horizontal expansion and front and back laterally arrange holds jube 141; Saidly arrange and pre-and post perforative some openings 142 about jube 141 is provided with near holding of rear wall 13, and and rear wall 13 between form the wiring part 146 that runs through diapire 14 up and down.Jube 141 forward walls 12 directions that hold between said adjacent two openings 142 are equipped with the pressure section 143 that presses on breach 551 inwalls downwards.Said pressure section 143 tops extend to second of plastic cement plate 5 a little to both sides respectively and step down and form interference part 1431 in the portion 54; When elasticity wire clamp 9 is assembled to insulation box body 1 from bottom to top with plastic cement plate 5 after; Said interference part 1431 compresses the said free terminal that said elasticity wire clamp 9 is provided with the first 90 of perforation 92 downwards, causes wire clamp 9 to get loose to prevent that first 90 from upwards sliding.Said diapire 14 is provided with inner surface 140 towards lid 2, the installed surface 144 relative with inner surface 140 and the groove 145 that is recessed to form from installed surface 144, and said groove 145 is in the form of a ring around being depressed on the said installed surface 144.

Please combine Fig. 9 and shown in Figure 11; Said lid 2 is provided with around lid 2 to the some retaining walls 20 that extend below and be resisted against from inside to outside on said insulation box body 1 wall; Said lid 2 also is provided with the extension wall 24 parallel with the retaining wall that is positioned at front end 20 in the place ahead of corresponding antetheca 12, the antetheca 12 that said extension wall 24 is fastened in insulation box body 1 with protect between the carriage 15; The retaining wall 20 that is positioned at lid 2 rear ends is provided with from this retaining wall 20 lower limbs and continues to the catch that extends below 22.Said extension wall 24 is provided with the stop part 21 that the Elastic buckles 151 in the accommodation space 122 that is used for insulation box body 1 hold mutually, and said stop part 21 can be buckle or groove setting.In the utility model solar junction box 100; Said stop part 21 is that the make-up trip of back-off on Elastic buckle 151 is provided with; And after said extension wall 24 is contained in the accommodation space 122 fully; The outer surface of said lid 2 is concordant with the upper edge of said protection carriage 15, thereby prevents that the user from directly strikeing the body 2 of uncapping with the hand.Said catch 22 outsides are provided with outstanding backward to be snapped in the projection 23 in the through hole 131 on insulation box body 1 rear wall 13.Said retaining wall 20 peripheries are provided with the seal groove 25 that caves inward.One sealing ring 8 is embedded in the seal groove 25 and said lid 2 is tightly connected with sealing ring 8 between the box body 1 with insulating.Said sealing ring 8 is roughly the rectangle ring-type of being processed by materials such as silica gel or plastic cement.Be provided with in order to add the protuberance 27 of large sealing packing ring 8 decrements in lid 2 mould commissures in the said seal groove 25, a side inwall of said protuberance 27 self sealss grooves 25 is outstanding in seal groove 25.In the utility model terminal box 100, projecting inward on the following cell wall of said protuberance 27 self sealss grooves 25 to seal groove 25.Said catch 22 is between the wiring part 146 of the rear wall 13 of insulation box body 1 and the box body 1 that insulate; When the access portion 62 of metallic gasket 6 connects the lug plate (not shown) of extraneous solar cell; Said lug plate is contained in the wiring part 146, because of itself is soft, outwardly-bent easily; At this moment; The catch 22 that increases makes lug plate support on the catch 22 but not on insulation box body 1 wall, thereby has increased creepage gap and the creepage distance of lug plate to solar junction box 100 outside, the electrical safety when having guaranteed solar junction box 100 uses.

Said two junction module 4 comprise the nut 41 with internal thread and are arranged in the lead 42 of nut 41 inside.The external screw thread of the internal thread of said nut 41 and said wire connecting portion 121 is coupled, and the wiring hole that said lead 42 passes wire connecting portion 121 is connected with the connecting portion 61 of said metallic gasket 6 and takes place electrically to contact.So be provided with, to realize the installing and locating of junction module 4 and insulation box body 1.

In sum; The utility model solar junction box 100 is through being provided with the interference part 1431 that compresses elasticity wire clamp 9 along the vertical direction on junction block; Thereby when extraneous solar energy lug plate is extracted elasticity wire clamp 9; Said interference part 1431 can stop elasticity wire clamp 9 distortion so that get loose, and then prevents the damage of elasticity wire clamp 9, guaranteed the solar energy lug plate can with 62 stable connections of access portion of solar junction box 100; And interference part 1431 directly is set on junction block, need not to lodge extra supplementary structure and stop that elasticity wire clamp 9 gets loose, simple in structure, cost is lower.

In the utility model solar junction box 100:

Said junction block is provided with and presses on the interference part 1431 to prevent that elastica folder 9 from getting loose on the elasticity wire clamp 9 along the vertical direction;

Said junction block is provided with insulation box body 1 and is contained in the Wiring module 3 in the insulation box body 1; Said Wiring module 3 comprises plastic cement plate 5 and buries the said metallic gasket 6 of moulding with plastic cement plate 5 edges; Said insulation box body 1 is provided with host cavity 10 and is positioned at the diapire 14 of host cavity 10 bottoms; Said Wiring module 3 is positioned on the diapire 14, and said interference part 1431 is arranged on the said diapire 14 of insulation box body 1;

Said access portion 62 is along the vertical direction perpendicular to said diapire 14; Said elasticity wire clamp 9 is installed in the said access portion 62 along the vertical direction; Said elasticity wire clamp 9 comprises first 90 that is formed with perforation 92 and the second portion 91 that oppositely extends from first 90 bending downwards; Second portion 91 be provided with pass perforation 92 wear sheet 93, said access portion 62 is perforated 92 inwalls and wears sheet 93 clampings;

Said metallic gasket 6 is provided with edge and buries the main part that takes shape in the plastic cement plate 5, the reverse respectively connecting portion 61 that extends in autonomous body two ends and said access portion 62;

Said plastic cement plate 5 one ends are provided with and run through up and down accommodating first of connecting portion 61 portion 52 that steps down, and said plastic cement plate 5 other ends are provided with some plastic cement plates 5 that run through up and down with the lattice-shaped second of accommodating access portion 62 portion 54 that steps down;

Saidly somely let second to step down and be provided with the partition wall 56 that said access portion 62 is separated between the portion 54, said partition wall 56 tops are provided with the breach 551 of depression;

Said insulation box body 1 is provided with and is positioned at host cavity 10 antetheca 12, rear wall 13 and the connection antetheca 12 on every side and the two side 11 of rear wall 13 front and back ends; Said diapire 14 be provided with connect two side 11 hold jube 141, the said jube 141 that holds is provided with the corresponding pressure section 143 on said breach 551 inwalls that presses on downwards;

Horizontal-extending partly gets into said second portion 54 that steps down from both sides, pressure section 143 top in said interference part 1431;

Said access portion 62 upwards vertically is arranged in the perforation 91, and the free terminal of said first 90 extends forward and compressed downwards by said interference part 1431;

Said elasticity wire clamp 9 is together organized the box body 1 of going into to insulate from bottom to top with plastic cement plate 5.

In sum; More than be merely the preferred embodiment of the utility model; Should not limit the scope of the utility model with this, promptly every simple equivalent of doing according to the utility model claims and description changes and modifies, and all should still belong in the scope that the utility model patent contains.

Claims (10)

1. solar junction box; The lid that comprises junction block and be installed on the junction block top; Said junction block comprises the number of metal pad and connects the rectification part of adjacent metal pad; Said metallic gasket is provided with the access portion that is connected with extraneous solar energy lug plate; Said solar junction box also is provided with the elasticity wire clamp of clamping access portion and solar energy lug plate, said elasticity wire clamp be one roughly be σ shape the two ends flexure strip that interlocks and hold, it is characterized in that: said junction block is provided with and presses on the interference part to prevent that the elastica folder from getting loose on the elasticity wire clamp along the vertical direction.

2. solar junction box as claimed in claim 1; It is characterized in that: said junction block is provided with the insulation box body and is contained in the Wiring module in the insulation box body; Said Wiring module comprises the plastic cement plate and buries the said metallic gasket of moulding with plastic cement plate edge; Said insulation box body is provided with host cavity and is positioned at the diapire of host cavity bottom, and said Wiring module is positioned on the diapire, and said interference part is arranged on the said diapire of insulation box body.

3. solar junction box as claimed in claim 2; It is characterized in that: said access portion is along the vertical direction perpendicular to said diapire; Said elasticity wire clamp is installed in the said access portion along the vertical direction; And said elasticity wire clamp comprises the first that is formed with perforation and from the reverse second portion that extends of first's bending downwards, said second portion is provided with the sheet of wearing that passes perforation, and said access portion is perforated inwall and wears the sheet clamping.

4. solar junction box as claimed in claim 2 is characterized in that: said metallic gasket is provided with edge and buries reverse respectively connecting portion that extends in the intraplate main part of plastic cement, autonomous body two ends and the said access portion of taking shape in.

5. solar junction box as claimed in claim 4; It is characterized in that: said plastic cement plate one end is provided with and runs through up and down accommodating first of the connecting portion portion that steps down, and the said plastic cement plate other end is provided with some plastic cement plates that run through up and down with the lattice-shaped second of the accommodating access portion portion that steps down.

6. solar junction box as claimed in claim 5 is characterized in that: said some second steps down is provided with between the portion the separated partition wall of said access part, and said partition wall top is provided with the breach of depression.

7. solar junction box as claimed in claim 6; It is characterized in that: said insulation box body is provided with the two side that is positioned at host cavity antetheca, rear wall and connection antetheca and rear wall front and back end on every side; Said diapire is provided with the jube that holds that connects the two side, and the said jube that holds is provided with the corresponding pressure section on the said breach inwall that presses on downwards.

8. solar junction box as claimed in claim 7 is characterized in that: horizontal-extending partly gets into said second portion that steps down from both sides, pressure section top in said interference part.

9. solar junction box as claimed in claim 8 is characterized in that: said access portion upwards vertically is arranged in the perforation, and the free terminal of said first extends forward and compressed downwards by said interference part.

10. solar junction box as claimed in claim 9 is characterized in that: said elasticity wire clamp is together organized the box body of going into to insulate from bottom to top with the plastic cement plate.

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