CN115189178A

CN115189178A - Easy-to-maintain quick-assembly photovoltaic junction box

Info

Publication number: CN115189178A
Application number: CN202211093868.1A
Authority: CN
Inventors: 黄梦贤
Original assignee: Jiangsu Forward Electronic Technology Co ltd
Current assignee: Jiangsu Forward Electronic Technology Co ltd
Priority date: 2022-09-08
Filing date: 2022-09-08
Publication date: 2022-10-14
Anticipated expiration: 2042-09-08
Also published as: CN115189178B

Abstract

The invention relates to the technical field of junction boxes, in particular to a quick-assembly photovoltaic junction box easy to maintain, which comprises: protection casing, main box of working a telephone switchboard, locking plug mechanism and be fixed in the wire holder on main box surface of working a telephone switchboard, the main box of working a telephone switchboard slides and cup joints in protection casing's inboard, protection casing's surface offer with the through-hole of wire holder looks adaptation, the inboard fixed mounting of wire holder has electrode needle file and joint seat, the surface of joint seat is equipped with a plurality of electrodes and connects the hole, the inside fixed mounting of electrode needle file connects the electric sole. According to the invention, by arranging a novel detachable structure, the wiring main box is quickly disassembled and assembled by utilizing the sleeving of the protective shell and the wiring main box, and the modularized wiring seat and the locking plug mechanism structure are arranged, the wiring seat is inserted into the surface of the main board of the wiring main box to fix the inside of the wiring main box, the quick connection of wiring ends is realized by the insertion of the locking plug mechanism on the surface, and the multi-insertion module effectively improves the convenience of the disassembly and the assembly of the wiring main box and is easy to maintain.

Description

Easy-to-maintain's ready-package photovoltaic terminal box

Technical Field

The invention relates to the technical field of junction boxes, in particular to a quick-assembly photovoltaic junction box easy to maintain.

Background

The photovoltaic junction box is used for connecting the solar cell modules, and when the photovoltaic junction box is used, the plurality of solar cell modules are connected in series through the plurality of photovoltaic junction boxes according to needs. The structure of the existing photovoltaic junction box includes: the box body, the setting is on the box body and mutually supports the lid with the box body, set up the mounting hole that can supply positive busbar and the negative busbar of drawing forth from the solar module bottom to insert in the bottom of box body, left side in the box body, be provided with left connecting piece and right connecting piece on the right both sides respectively, be provided with the diode between left connecting piece and right connecting piece, the one end of left connecting piece and right connecting piece welds each other with left cable conductor and right cable conductor respectively, the other end of left connecting piece and right connecting piece welds each other with positive busbar and negative busbar respectively. Because the adoption is welded connected mode between the busbar connecting piece, it is very inconvenient to connect, and speed is slower, and the access and the fixed of cable conductor are also not very convenient in addition.

In addition, this kind of mode of connection still mainly adopts the joint or the welded joint of electrode and connecting wire harness end, the wire harness end need carry out the violence when changing and demolish, but quick dismantlement formula wiring structure, long-term outdoor use at photovoltaic terminal box discovers that the electrode has great gap with being connected of connecting wire harness end, joint locking intensity is low, easily irritate unexpected circumstances such as moisture or water liquid lead to the short circuit of internal line in the gap, current photovoltaic terminal box does not have any protection means, easily cause the whole damage of terminal box or lead to photovoltaic system's global short circuit when accidents such as short circuit cause, the low maintenance degree of difficulty of practicality is big.

In view of this, research and improvement are carried out to the existing problem, and a ready-package photovoltaic junction box easy to maintain is provided to solve the existing problem that the photovoltaic junction box is simple in structure and not easy to maintain, and the purpose of solving the problem and improving the practical value is achieved through the technology.

Disclosure of Invention

The present invention is directed to solving one of the technical problems of the prior art or the related art.

Therefore, the technical scheme adopted by the invention is as follows: a ready-to-service photovoltaic junction box for ease of maintenance, comprising: the novel protective connector comprises a protective shell, a main wiring box, a locking plug mechanism and a wiring seat fixed on the surface of the main wiring box, wherein the main wiring box is sleeved on the inner side of the protective shell in a sliding mode, a through hole matched with the wiring seat is formed in the surface of the protective shell, an electrode needle seat and a connector seat are fixedly installed on the inner side of the wiring seat, a plurality of electrode connecting holes are formed in the surface of the connector seat, an electric connecting foot plate is fixedly installed inside the electrode needle seat, a plurality of protective electric pieces are fixedly welded on the surface of the electric connecting foot plate, a plurality of pins are arranged on the surface of the electrode needle seat, and two ends of the protective electric pieces are respectively communicated with the electrode connecting holes and the pins and are electrically connected with the electrode connecting holes and the pins in a one-to-one corresponding mode; locking plug mechanism includes plug seat and locking subassembly, one side of plug seat is equipped with sealed the pad, the fixed cover of locking subassembly connects in the inboard of plug seat, the surface of plug seat is equipped with a plurality of electrode nails, the end connection of electrode nail has the input cable who is located plug seat one end, the locking subassembly is installed in the inboard first knot and the second knot of taking over of plug seat including being fixed in the fixed baffle on plug seat surface and rotating, the fixed surface of fixed baffle installs the guide block, the equal slidable mounting in both ends on fixed baffle surface has the operation to turn round, two the one end difference fixedly connected with of operation is turned round with first knot and the second and is taken over the unblock butt pole that is connected.

In this embodiment, the surface of the main connection box is provided with an elastic abutting buckle, the surface of the protective shell is provided with a bayonet slot matched with the elastic abutting buckle, and the pins of the electrode needle base are connected with the electrodes of the main connection box in an inserting manner.

The present invention in a preferred example may be further configured to: the inner side of the wire holder is provided with a plug cavity matched with the plug holder and the locking assembly, the surface of the wire holder is provided with a jack communicated with the plug cavity, and the shape and size of the jack are matched with those of the plug holder.

The invention in a preferred example may be further configured to: the protection electric plate is a fusing fuse structure, the two ends of the protection electric plate are provided with pole pieces connected with the surfaces of the power connection pin plates, and the protection electric plate is in an S shape or a W shape.

The present invention in a preferred example may be further configured to: the first shape size that connects the knot and the second connects the knot is the same, first connect the knot and the second connect the surface of knot to be equipped with the U type draw-in groove of connection terminal surface jack looks adaptation, first connect the knot and the second connect the one end of knot to be equipped with the grafting inclined plane.

The present invention in a preferred example may be further configured to: the surface of the guide block is provided with a guide hole, a flexible guide pipe is fixedly arranged on one side of the guide block, the other end of the flexible guide pipe is fixedly connected with the surfaces of the first connecting buckle and the second connecting buckle, and an unlocking abutting rod and a spring which is mutually abutted to one side of the guide block are fixedly arranged on the surface of the operation knob.

In this embodiment, the unlocking support rods on the surfaces of the operation knobs on the two sides are respectively abutted against the surfaces of the first connecting buckle and the second connecting buckle, the unlocking support rods are slidably sleeved on the inner side of the flexible guide pipe, one side of the operation knob is rotatably sleeved with a sliding pin, and the two ends of the sliding pin are slidably abutted against the surfaces of the fixed guide plate and the electrode nail.

The invention in a preferred example may be further configured to: the opposite face that first knot and second connect the knot all embeds installs permanent magnetism piece, first knot and second connect the knot surface permanent magnetism piece magnetic pole to be the mutual disposition.

The beneficial effects obtained by the invention are as follows:

1. according to the invention, by arranging a novel split structure, the wiring main box is quickly disassembled and assembled by utilizing the sleeving of the protective shell and the wiring main box, and a modularized wiring seat and a locking plug mechanism structure are arranged, the wiring seat is inserted into the surface of the main board of the wiring main box to fix the inside of the wiring main box, the wiring end is quickly connected through the insertion of the locking plug mechanism on the surface, and the multi-insertion module effectively improves the disassembly and assembly convenience of the wiring main box and is easy to maintain.

2. According to the invention, through arranging the novel self-locking type plugging structure, the first connecting buckle and the second connecting buckle which are elastically deflected in the plug seat are meshed and locked with the inside of the wire seat, the electrode nail and the electrode connecting hole wire are locked, and the electrode nail and the electrode connecting hole wire are locked through the interference and butt state of the surface sealing structure of the plug seat and the surface of the protective shell, so that the connection strength of the wire head end is ensured, the joint sealing property is improved, and the invasion of external moisture or humidity is avoided.

3. According to the invention, the modularized wire holder structure is arranged on the surface of the main wiring box, the wire holder and the main wiring box are used for carrying out stitch splicing for quick detachable installation, the wire holder is embedded into the protective shell and the main wiring box and is locked through the joint with the locking plug mechanism, the joint effect of the main wiring box and the protective shell is improved, the wiring structure in the wire holder and the protective electric sheet structure are used for carrying out circuit connection and circuit protection, and the structure is simple and high in practicability.

Drawings

FIG. 1 is a schematic overall structure of an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a main junction box according to an embodiment of the present invention;

FIG. 3 is a schematic view of an engaging structure of the wire holder and the locking plug mechanism according to an embodiment of the present invention;

FIG. 4 is a schematic view of an unlocking structure of the wire holder and locking plug mechanism according to an embodiment of the present invention;

fig. 5 is a schematic view of the internal structure of the pole needle holder and the joint holder according to one embodiment of the present invention;

FIG. 6 is a schematic diagram of a protective electrical sheet according to an embodiment of the present invention;

FIG. 7 is an exploded view of the locking plug mechanism of one embodiment of the present invention;

fig. 8 is a schematic view of an operating knob and an unlocking lever mounting structure according to an embodiment of the present invention.

Reference numerals are as follows:

100. a protective housing; 110. a bayonet slot;

200. a main junction box; 210. elastic buckling;

300. a wire holder; 310. an electrode needle holder; 320. a joint base; 330. connecting a power connection base plate; 340. protecting the electric sheet; 321. an electrode connection hole;

400. a locking plug mechanism; 410. a plug base; 420. a locking assembly; 411. an electrode nail; 421. fixing the guide plate; 422. a first buckle; 423. a second connecting buckle; 424. a guide block; 425. an operation button; 426. and unlocking the abutting rod.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be noted that the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.

The following describes a quick-mounting photovoltaic junction box easy to maintain provided by some embodiments of the invention with reference to the accompanying drawings.

Referring to fig. 1 to 8, the invention provides a quick-mounting photovoltaic junction box easy to maintain, which includes: the protective casing 100, the main wiring box 200, the locking plug mechanism 400 and the wiring base 300 fixed on the surface of the main wiring box 200, wherein the main wiring box 200 is slidably sleeved on the inner side of the protective casing 100, a through hole matched with the wiring base 300 is formed in the surface of the protective casing 100, an electrode needle holder 310 and a connector holder 320 are fixedly installed on the inner side of the wiring base 300, a plurality of electrode connecting holes 321 are formed in the surface of the connector holder 320, an electric connecting foot plate 330 is fixedly installed inside the electrode needle holder 310, a plurality of protective electric pieces 340 are welded and fixed on the surface of the electric connecting foot plate 330, a plurality of pins are arranged on the surface of the electrode needle holder 310, and two ends of each protective electric piece 340 are respectively communicated with the electrode connecting holes 321 and the pins and are electrically connected with one another correspondingly; locking plug mechanism 400 includes plug connector 410 and locking subassembly 420, one side of plug connector 410 is equipped with sealed the pad, locking subassembly 420 is fixed to cup joint in the inboard of plug connector 410, the surface of plug connector 410 is equipped with a plurality of electrode nails 411, the end connection of electrode nail 411 has the input cable that is located plug connector 410 one end, locking subassembly 420 is including being fixed in the fixed baffle 421 on plug connector 410 surface and rotating and installing in the inboard first knot 422 and the second knot 423 of plug connector 410, the fixed surface mounting of fixed baffle 421 has guide block 424, the equal slidable mounting in both ends on fixed baffle 421 surface has operation to turn round 425, the one end of two operation turns round 425 fixedly connected with respectively with first knot 422 and the second knot 423 unlocking of being connected withstands pole 426.

In this embodiment, the surface of the main connection box 200 is provided with an elastic abutting buckle 210, the surface of the protective casing 100 is provided with a bayonet slot 110 adapted to the elastic abutting buckle 210, and the pins of the electrode pin holder 310 are inserted into the electrodes of the main connection box 200.

Specifically, through set up the electrode hole and peg graft by the stitch of electrode needle file 310 and realize each independent connection terminal 300 quick replacement on the main board surface of main box of working a telephone switchboard 200, through the main box of working a telephone switchboard 200 and the cup joint of protective housing 100 be convenient for the main box of working a telephone switchboard 200 disassemble maintain, by the integrated fusing protection of disposable connection terminal 300 carry out the main box of working a telephone switchboard 200 circuit protection, be convenient for maintain the change.

In this embodiment, the inner side of the wire holder 300 is provided with a plug cavity adapted to the plug holder 410 and the locking assembly 420, and the surface of the wire holder 300 is provided with a plug hole communicated with the plug cavity, the shape and size of the plug hole being adapted to the shape and size of the plug holder 410.

Specifically, the plug cavity and the jack inside the wire holder 300 are used for being matched, inserted and fixed with the locking plug mechanism 400, so that the plug holder 410 can enter the wire holder 300 to enable the electrode nail 411 to be jointed with the connector holder 320, the jack on the surface only passes through the plug holder 410, the locking component 420 is locked after being unfolded inside the plug cavity, the quick connection of the wiring is realized, and the locking wiring of the plug holder 410 is realized by utilizing the locking component 420 to improve the wiring strength.

In this embodiment, the protection electrical sheet 340 is a fuse structure, and two ends of the protection electrical sheet 340 are provided with pole pieces connected to the surface of the pin board 330, and the protection electrical sheet 340 is in one of an S shape and a W shape.

Specifically, the fuse is integrated in the wire holder 300 for plug connection, and the internal line protection of the main junction box 200 is performed in various accident situations.

In this embodiment, the first fastening 422 and the second fastening 423 have the same shape and size, the surfaces of the first fastening 422 and the second fastening 423 are provided with U-shaped slots adapted to the insertion holes on the surface of the wire holder 300, and one ends of the first fastening 422 and the second fastening 423 are provided with insertion slopes.

Specifically, the first engaging button 422 and the second engaging button 423 deflect inside the plug base 410, and deflect freely by abutting the insertion inclined surface with the surface of the wire holder 300 when the wire holder 300 is inserted, and engage with the insertion hole on the surface of the wire holder 300 by the U-shaped clamping groove on the surfaces of the first engaging button 422 and the second engaging button 423 after the insertion is completed, so that the surface of the plug base 410 abuts tightly with the surface of the wire holder 300, thereby improving the joint sealing performance.

In this embodiment, a guide hole is formed on the surface of the guide block 424, a flexible conduit is fixedly mounted on one side of the guide block, the other end of the flexible conduit is fixedly connected with the surfaces of the first and

second fasteners

422 and 423, and an unlocking resisting rod 426 and a spring which is mutually abutted with one side of the guide block 424 are fixedly mounted on the surface of the operating knob 425.

In this embodiment, the unlocking resisting rods 426 on the surfaces of the two operating knobs 425 respectively abut against the surfaces of the first fasteners 422 and the second fasteners 423, the unlocking resisting rods 426 are slidably sleeved on the inner side of the flexible conduit, one side of the operating knob 425 is rotatably sleeved with a sliding pin, and two ends of the sliding pin slidably abut against the surfaces of the fixed guide plate 421 and the electrode nail 411.

Specifically, in the unlocking operation, the unlocking resisting rod 426 is used for linking the first connecting buckle 422 and the second connecting buckle 423 to deflect and unlock in the plug seat 410 by pressing the operation knob 425, so that the quick unlocking of the joint is realized, and the stable locking of the first connecting buckle 422 and the second connecting buckle 423 in daily use is maintained by the arrangement of the flexible conduit and the spring.

In this embodiment, permanent magnets are embedded in opposite surfaces of the first fastening 422 and the second fastening 423, and magnetic poles of the permanent magnets on the surfaces of the first fastening 422 and the second fastening 423 are arranged oppositely.

Specifically, the permanent magnet blocks utilizing the surface repulsive force of the first connecting buckle 422 and the second connecting buckle 423 drive the first connecting buckle 422 and the second connecting buckle 423 to deviate from each other, the movement leads the outer side of the plug base 410, the free deflection of the first connecting buckle 422 and the second connecting buckle 423 is avoided, the locking plug mechanism 400 and the wire holder 300 are prevented from being connected and falling off, the surface of the plug base 410 is tightly abutted to the surface of the wire holder 300, and the locking plug mechanism 400 falling off caused by the elastic restoration of the sealing gasket is prevented.

The working principle and the using process of the invention are as follows:

when the quick-mounting photovoltaic junction box is used, firstly, the wire holder 300 is disassembled in the hole position of the surface of the control plate on the inner wall of the main junction box 200 through the surface pins of the electrode pin holder 310, the protective shell 100 is sleeved on the surface of the main junction box 200, the elastic abutting buckle 210 is clamped with the bayonet groove 110 to fix the protective shell 100, the main junction box 200 and the wire holder 300 are protected inside through the protective shell 100 to avoid damage such as external impact, the structural rigidity is improved, the sleeved structure of the protective shell 100 and the main junction box 200 is convenient to disassemble, the hole position of the surface of the protective shell 100 is aligned with each wire holder 300, and thus the hole position of the surface of the wire holder 300 is exposed for wiring; the plug base 410 is jointed with the cable conductor and can be spliced with the wire holder 300 after protection, when the wire holder 300 is inserted, free deflection is carried out through the butting of a splicing inclined plane and the surface of the wire holder 300, after the splicing is finished, the arrangement of a flexible conduit and a spring pushes the first connecting buckle 422 and the second connecting buckle 423 to deflect and reset in stable locking in daily use, the first connecting buckle 422 and the second connecting buckle 423 are driven to deviate from each other by a permanent magnet block with the surface repulsive force of the first connecting buckle 422 and the second connecting buckle 423, further deflection motion is conducted out of the outer side of the plug base 410, the situation that the locking plug mechanism 400 and the wire holder 300 are connected and separated due to the free deflection of the first connecting buckle 422 and the second connecting buckle 423 is avoided, the U-shaped clamping grooves on the surfaces of the first connecting buckle 422 and the second connecting buckle 423 are meshed with the surface of the wire holder 300, the surface of the plug base 410 is tightly butted with the surface of the wire holder 300, the quick connection of the wire terminal is realized through the splicing of the locking plug mechanism 400, the multi-splicing module effectively improves the convenience of the main wiring box 200, and the convenience of the maintenance operation is easy.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An easy-to-maintain ready-package photovoltaic junction box, comprising: the protection device comprises a protection shell (100), a main wiring box (200), a locking plug mechanism (400) and a wiring seat (300) fixed on the surface of the main wiring box (200), wherein the main wiring box (200) is sleeved on the inner side of the protection shell (100) in a sliding mode, a through hole matched with the wiring seat (300) is formed in the surface of the protection shell (100), an electrode needle seat (310) and a connector seat (320) are fixedly installed on the inner side of the wiring seat (300), a plurality of electrode connecting holes (321) are formed in the surface of the connector seat (320), an electric foot plate (330) is fixedly installed inside the electrode needle seat (310), a plurality of protective electric pieces (340) are fixedly welded on the surface of the electric foot plate (330), a plurality of pins are arranged on the surface of the electrode needle seat (310), and two ends of the protective electric pieces (340) are respectively communicated with the electrode connecting holes (321) and the pins and are electrically connected with the corresponding to one another;

locking plug mechanism (400) are including plug seat (410) and locking subassembly (420), one side of plug seat (410) is equipped with sealed the pad, the fixed cover of locking subassembly (420) is connected in the inboard of plug seat (410), the surface of plug seat (410) is equipped with a plurality of electrode nail (411), the end connection of electrode nail (411) has the input cable who is located plug seat (410) one end, locking subassembly (420) are including fixed baffle (421) and the rotation that are fixed in plug seat (410) surface and install in first joint knot (422) and the second joint knot (423) of plug seat (410) inboard, the fixed surface mounting of fixed baffle (421) has guide block (424), the equal slidable mounting in both ends on fixed baffle (421) surface has operation to turn round (425), two the one end difference fixedly connected with first joint knot (422) and the second joint knot (423) unblock of being connected supports pole (426).

2. The easy-to-maintain quick-assembly photovoltaic junction box is characterized in that an elastic abutting buckle (210) is arranged on the surface of the main junction box (200), a bayonet groove (110) matched with the elastic abutting buckle (210) is formed in the surface of the protective shell (100), and pins of the electrode pin holder (310) are connected with electrodes of the main junction box (200) in an inserted manner.

3. The easy-to-maintain quick-assembly photovoltaic junction box as claimed in claim 1, wherein a plug cavity matched with the plug holder (410) and the locking assembly (420) is formed in the inner side of the wire holder (300), a jack communicated with the plug cavity is formed in the surface of the wire holder (300), and the shape and size of the jack are matched with those of the plug holder (410).

4. The easy-to-maintain ready-package photovoltaic junction box of claim 1, wherein the protection electrical sheet (340) is of a fused fuse structure, and two ends of the protection electrical sheet (340) are provided with pole pieces connected to the surface of the power connection pin plate (330), and the protection electrical sheet (340) is in one of an S shape and a W shape.

5. The quick-mounting photovoltaic junction box easy to maintain as claimed in claim 1, wherein the first connecting buckle (422) and the second connecting buckle (423) are the same in shape and size, a U-shaped clamping groove matched with a surface insertion hole of the junction base (300) is formed in the surfaces of the first connecting buckle (422) and the second connecting buckle (423), and an insertion inclined surface is formed at one end of each of the first connecting buckle (422) and the second connecting buckle (423).

6. The easy-to-maintain quick-assembly photovoltaic junction box according to claim 1, wherein a guide hole is formed in the surface of the guide block (424), a flexible guide pipe is fixedly installed on one side of the guide block, the other end of the flexible guide pipe is fixedly connected with the surfaces of the first connecting buckle (422) and the second connecting buckle (423), an unlocking resisting rod (426) is fixedly installed on the surface of the operating knob (425), and a spring is abutted to one side of the guide block (424).

7. The easy-to-maintain quick-assembly photovoltaic junction box according to claim 6, wherein unlocking support rods (426) on the surfaces of the operation buttons (425) on two sides are respectively abutted against the surfaces of the first connecting buckle (422) and the second connecting buckle (423), the unlocking support rods (426) are slidably sleeved on the inner side of the flexible guide pipe, one side of the operation button (425) is rotatably sleeved with a sliding pin, and two ends of the sliding pin are slidably abutted against the surfaces of the fixed guide plate (421) and the electrode nail (411).

8. The quick-mounting photovoltaic junction box easy to maintain as claimed in claim 1, wherein permanent magnets are embedded in opposite surfaces of the first connecting buckle (422) and the second connecting buckle (423), and permanent magnet poles on the surfaces of the first connecting buckle (422) and the second connecting buckle (423) are arranged oppositely.