CN215300576U

CN215300576U - Junction box with good shell sealing performance

Info

Publication number: CN215300576U
Application number: CN202120962440.0U
Authority: CN
Inventors: 孙明伟
Original assignee: Suzhou Ur Intelligent Technology Co ltd
Current assignee: Suzhou Ur Intelligent Technology Co ltd
Priority date: 2021-05-08
Filing date: 2021-05-08
Publication date: 2021-12-24
Anticipated expiration: 2031-05-08

Abstract

The utility model discloses a terminal box that shell leakproofness is good, which comprises a housin, the bottom of casing is provided with the cable conductor, the bottom of cable conductor is provided with the connector, the top of cable conductor is provided with the base, and the one end of affiliated base is provided with the busbar patchhole. This terminal box that shell leakproofness is good passes through reinforcing plate and fretwork groove, the utilization sets up a set of fretwork groove in the bottom of terminal box, the riveting of being more convenient for is all gone out completely or some fretworks, the casing department of fretwork groove outside sets up the reinforcing plate, utilize the riveted mode to fix the busbar on the terminal box, the reinforcing plate can satisfy the atress requirement of riveting technology, it is more convenient firm to make its connected mode, this structure has adopted the riveted mode, the fastness of busbar connection in the terminal box has been improved, adopt the mode of soldering more when having solved fixed busbar, rosin joint appears easily and the problem of stability inadequately.

Description

Junction box with good shell sealing performance

Technical Field

The utility model relates to a terminal box technical field specifically is a terminal box that shell leakproofness is good.

Background

The junction box of the solar cell module is very important in the composition of the solar cell module, and mainly has the function of connecting the electric power generated by the solar cell with an external circuit, but the existing junction box still has some defects to be improved when in use, for example, the traditional junction box adopts a tin soldering mode when fixing a bus bar, so that the condition of false welding is easy to occur and the junction box is not stable enough, or the poor sealing performance of a shell of the junction box causes water or dust to enter the interior of the junction box.

In the process of implementing the present invention, the inventor finds that at least the following problems exist in the prior art and are not solved:

(1) in the traditional junction box, a soldering mode is mostly adopted when the bus bar is fixed, and the situations of insufficient soldering and instability are easy to occur;

(2) in the traditional junction box, the case that water or dust enters the interior of the junction box easily occurs due to poor sealing performance of a shell;

(3) the traditional junction box has no structure capable of leading wires, and the cable is disordered and not attractive enough outside the junction box.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a terminal box that shell leakproofness is good to it connects unstable problem inadequately to propose the busbar in solving above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a terminal box that shell leakproofness is good, includes the casing, the bottom of casing is provided with the cable conductor, the bottom of cable conductor is provided with the connector, the top of cable conductor is provided with the base, and the one end of affiliated base is provided with the busbar patchhole, the one end of casing is provided with four group's interfaces, the top of casing is provided with the reinforcing plate, the inside of reinforcing plate is provided with the fretwork groove, the one end of casing is provided with the lead structure, the outside of casing is provided with waterproof coating.

Preferably, the cables are arranged in two groups and are symmetrically distributed about a vertical center line of the shell.

Preferably, the interfaces are provided with four groups, and the interfaces are distributed at one end of the shell at equal intervals.

Preferably, the lead structure comprises a lead ring, an elastic block, a wire clamping ring and a fixed seat, the fixed seat is fixedly connected to one end of the shell, the lead ring is arranged at one end of the fixed seat, four groups of elastic blocks are arranged inside the lead ring, and the wire clamping ring is fixedly connected to one side of each elastic block.

Preferably, the width of the inside of the wire loop is greater than the width of the outside of the bus bar, which is embedded inside the wire loop.

Preferably, four groups of wire clamping rings are arranged, and the wire clamping rings are annularly distributed in the wire leading ring.

Compared with the prior art, the beneficial effects of the utility model are that: the junction box with the good shell sealing performance not only improves the stability of bus bar connection and the sealing performance of the outer part of the junction box, but also is convenient for arranging cables outside the junction box;

(1) through the reinforcing plate and the hollow grooves, the traditional junction box adopts a tin soldering mode when fixing the bus bar, so that the condition of insufficient stability and insufficient rosin joint is easy to occur, the bottom of the junction box is provided with a group of hollow grooves, the complete hollow or partial hollow is more convenient to rivet, the shell outside the hollow grooves is provided with the reinforcing plate, the bus bar is fixed on the junction box by using the riveting mode, the reinforcing plate can meet the stress requirement of the riveting process, the connection mode is more convenient and firm, the structure adopts the riveting mode, and the connection firmness of the bus bar in the junction box is improved;

(2) the connection between the shell of the junction box is tight through the waterproof coating, the waterproof coating is sprayed on the shell of the junction box by utilizing a plastic spraying process, the external sealing performance of the shell of the junction box is good, fine dust and moisture can be blocked, faults and damages caused by water or dust entering the interior of the junction box are reduced, meanwhile, the waterproof coating sprayed on the exterior of the junction box can also prevent moisture from invading into the interior of the shell from the surface of the shell, the structure improves the sealing performance of the shell of the junction box, and the waterproof and dustproof protection effects of the junction box are enhanced;

(3) through the lead ring, the elastic block, wire clamping ring and fixing base, the busbar is connected on the terminal box, can follow the inside of lead ring earlier and pass, the inside elastic block that has of lead ring drives wire clamping ring expansion, the busbar passes the back, wire clamping ring tightly hugs closely clothes and carries out the centre gripping to the busbar in the outside of busbar, every group lead ring corresponds at corresponding kneck, this structure has realized carrying out the winding displacement to the outside busbar of terminal box, the stability of the wiring of terminal box has been improved, let the terminal box look more pleasing to the eye simultaneously.

Drawings

Fig. 1 is a schematic front view of a cross-sectional structure of the present invention;

fig. 2 is a schematic view of a three-dimensional rear view structure of the cable of the present invention;

fig. 3 is a schematic view of the cross-sectional structure of the junction box of the present invention;

fig. 4 is a schematic diagram of the top view, cross section and enlarged structure of the lead structure of the present invention.

In the figure: 1. a cable wire; 2. a housing; 3. an interface; 4. a reinforcing plate; 5. a lead structure; 501. a wire loop; 502. an elastic block; 503. a wire clamping ring; 504. a fixed seat; 6. a water-resistant coating; 7. a connector; 8. a base; 9. a bus bar insertion hole; 10. and (6) hollowing out the groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1: referring to fig. 1-4, a junction box with a good shell sealing performance includes a housing 2, wherein two groups of cables 1 are disposed at the bottom end of the housing 2, the cables 1 are symmetrically distributed about a vertical center line of the housing 2, a connector 7 is disposed at the bottom end of the cable 1, a base 8 is disposed at the top end of the cable 1, a bus bar insertion hole 9 is disposed at one end of the base 8, four groups of connectors 3 are disposed at one end of the housing 2, the connectors 3 are equally spaced at one end of the housing 2, a reinforcing plate 4 is disposed at the top end of the housing 2, a hollow groove 10 is disposed inside the reinforcing plate 4, and a lead structure 5 is disposed at one end of the housing 2;

specifically, as shown in fig. 1, fig. 2 and fig. 3, traditional terminal box adopts the mode of soldering more when fixed busbar, the condition of rosin joint appears easily and is not stable enough, utilize the bottom at the terminal box to set up a set of fretwork groove 10, the riveting of all being more convenient for of complete fretwork or partial fretwork, 2 departments of casing outside fretwork groove 10 set up reinforcing plate 4, utilize riveted mode to fix the busbar on the terminal box, reinforcing plate 4 can satisfy the atress requirement of riveting technology, make its connected mode more convenient firm, this structure has adopted riveted mode, the fastness of busbar connection in the terminal box has been improved.

Example 2: the exterior of the shell 2 is provided with a waterproof coating 6;

specifically, as shown in fig. 1, fig. 2 and fig. 3, the connection between the terminal box shells is comparatively inseparable, utilize the spraying plastics technology to spray waterproof coating 6 to the terminal box shell, the outside leakproofness of terminal box shell is good, can block fine dust and moisture, reduced inside because of intaking or the trouble and the damage that lead to the fact of entering the dust of terminal box, spraying plastics can also avoid moisture to invade the inside of casing 2 from the surface of casing 2 at the outside waterproof coating 6 of terminal box simultaneously, this structure has improved the leakproofness of terminal box shell, the waterproof dirt-proof protective effect of terminal box has been strengthened.

Example 3: the lead structure 5 comprises a lead ring 501, elastic blocks 502, wire clamping rings 503 and a fixed seat 504, the fixed seat 504 is fixedly connected to one end of the shell 2, the lead ring 501 is arranged at one end of the fixed seat 504, the width of the inner part of the lead ring 501 is larger than the width of the outer part of a bus bar, the bus bar is embedded in the lead ring 501, four groups of elastic blocks 502 are arranged in the lead ring 501, the wire clamping rings 503 are fixedly connected to one side of the elastic blocks 502, four groups of wire clamping rings 503 are arranged, and the wire clamping rings 503 are distributed in the lead ring 501 in a ring shape;

specifically, as shown in fig. 1 and 4, the bus bar is connected to the junction box and can pass through the inside of the lead ring 501, the elastic block 502 in the lead ring 501 drives the wire clamping ring 503 to expand, after the bus bar passes through, the wire clamping ring 503 tightly adheres to the outside of the bus bar to clamp the bus bar, each group of lead rings 501 corresponds to the corresponding interface 3, and this structure realizes the wire arrangement of the bus bar outside the junction box, improves the stability of the wiring of the junction box, and makes the junction box look more beautiful.

The working principle is as follows: when the utility model is used, the cable 1 is arranged outside the junction box, the bus bar is inserted from the bus bar inserting hole 9 at the bottom end of the junction box, then the connecting piece is turned outwards to the hollow groove 10 at the bottom end of the junction box and is connected to the outside of the junction box in a riveting mode, the hollow groove 10 is more convenient for riveting, the reinforcing plate 4 can meet the stress requirement of the riveting process, the connecting mode is more convenient and firmer, then the bus bar is passed through the lead ring 501, the elastic block 502 in the lead ring 501 drives the wire clamping ring 503 to expand, after the bus bar is passed through, the wire clamping ring 503 tightly adheres to the outside of the bus bar to clamp the bus bar, the junction box not only adopts a riveting mode, improves the firmness of the connection of the bus bar in the junction box, but also improves the sealing performance of the junction box shell and enhances the waterproof and dustproof protection effect of the junction box.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A terminal box with a good sealing shell comprises a shell body (2), and is characterized in that: the bottom of casing (2) is provided with cable conductor (1), the bottom of cable conductor (1) is provided with connector (7), the top of cable conductor (1) is provided with base (8), and the one end of affiliated base (8) is provided with busbar patchhole (9), the one end of casing (2) is provided with four group's interfaces (3), the top of casing (2) is provided with reinforcing plate (4), the inside of reinforcing plate (4) is provided with fretwork groove (10), the one end of casing (2) is provided with lead structure (5), the outside of casing (2) is provided with waterproof coating (6).

2. The terminal box with a good sealing shell as claimed in claim 1, wherein: the two groups of cables (1) are symmetrically distributed around the vertical center line of the shell (2).

3. The terminal box with a good sealing shell as claimed in claim 1, wherein: the connector (3) is provided with four groups, and the connectors (3) are distributed at one end of the shell (2) at equal intervals.

4. The terminal box with a good sealing shell as claimed in claim 1, wherein: lead structure (5) comprise lead wire ring (501), elastic block (502), wire clamping ring (503) and fixing base (504), fixing base (504) fixed connection is in the one end of casing (2), the one end of fixing base (504) is provided with lead wire ring (501), the inside of lead wire ring (501) is provided with four groups of elastic block (502), one side fixedly connected with wire clamping ring (503) of elastic block (502).

5. The junction box with a good housing sealing performance as claimed in claim 4, wherein: the width of the inside of the wire loop (501) is larger than the width of the outside of the bus bar, which is embedded inside the wire loop (501).

6. The junction box with a good housing sealing performance as claimed in claim 4, wherein: four groups of wire clamping rings (503) are arranged, and the wire clamping rings (503) are distributed in a ring shape in the lead ring (501).