CN202601663U

CN202601663U - Junction box

Info

Publication number: CN202601663U
Application number: CN2012201501780U
Authority: CN
Inventors: 段正刚
Original assignee: Suzhou QC Solar Co Ltd
Current assignee: Suzhou QC Solar Co Ltd
Priority date: 2012-04-11
Filing date: 2012-04-11
Publication date: 2012-12-12
Anticipated expiration: 2022-04-11

Abstract

The utility model provides a junction box, comprising a box body, a terminal inside the box body, and a cable which is extended into the box body and is electrically connected with the terminal. The box body has a side wall and a front wall connected with the side wall. A joint is integrally arranged on the front wall in a forwardly-protruding manner, and is provided with a through hole in communication with the interior of the box body. The through hole has an opening for inserting a cable therein. The joint forwardly protrudes from the front wall and is integrated with the box body, so that no seam is generated at the part where the joint an the front wall are jointed, thereby preventing water vapor from entering.

Description

Terminal box

Technical field

The utility model relates to a kind of terminal box, relates in particular to a kind of solar junction box.

Background technology

Solar junction box in the market generally is provided with box body and is positioned at box body inner terminal and diode, electrically connects in order to make terminal and external cable, offers through hole on the box portion front so that cable can stretch into the inside of box body.Yet, install cable after, between cable and through hole, have the slit, it is inner that steam gets into box body through the slit easily, thereby cause terminal box to break down.

Therefore, be necessary to provide a kind of new terminal box to overcome the problems referred to above.

The utility model content

The purpose of the utility model is to provide a kind of effectively terminal box of waterproof.

Correspondingly; A kind of terminal box of the utility model; Comprise box body, be positioned at the inner terminal of box body and extend into the inner cable that electrically connects with terminal of box body, said box body comprises sidewall and connects the antetheca of sidewall that said antetheca one is equipped with joint forward; This joint is provided with the through hole that communicates with box body inside, and through hole is provided with the opening that supplies cable to insert.

Further improvement as the utility model is connected with reinforcement between said joint and the sidewall.

As the further improvement of the utility model, said joint has external screw thread.

Further improvement as the utility model is provided with step surface in the said through hole, forms container cavity between said opening and the step surface, and said container cavity contains plug and the interior pawl that cooperatively interacts.

As the further improvement of the utility model, said plug comprises the pressure section that is held in said step surface and supplies the socket part of said interior pawl socket.

As the further improvement of the utility model, said in pawl comprise and be socketed in the main part on the said socket part and be positioned at the radially outside open claw of open outer side.

As the further improvement of the utility model, said plug is processed by elastomeric material.

As the further improvement of the utility model, said interior pawl is processed by flexible plastic material.

Further improvement as the utility model also comprises tapped back cover, and said back cover is connected with joint screw thread.

As the further improvement of the utility model, back cover is in rundown process, and the claw of interior pawl inwardly draws in clamping cables.

The beneficial effect of the utility model is: joint is outstanding and one-body molded with box body forward from antetheca, can not produce the slit at joint and antetheca joint, thereby prevents that steam from getting into.

Description of drawings

Fig. 1 is the stereogram of the utility model one execution mode terminal box;

Fig. 2 is the part exploded view of terminal box shown in Figure 1;

Fig. 3 is the three-dimensional structure diagram of box body among Fig. 1.

Embodiment

Below will combine each execution mode shown in the drawings that the utility model is described in detail.But these execution modes do not limit the utility model, and the conversion on the structure that those of ordinary skill in the art makes according to these execution modes, method or the function all is included in the protection range of the utility model.

As shown in Figure 1, the utility model one execution mode terminal box comprises box body 1, is contained in the plurality of terminals (not shown) of box body 1 inside and extends into the box body 1 inner cable 2 that electrically connects with terminal.

Shown in Fig. 1 to 3; Box body 1 comprises sidewall 11 and connects the antetheca 12 of two side; Antetheca 12 is equipped with joint 121 forward, this joint 121 and box body 1 integrated injection molding, and joint 121 is provided with the through hole 123 that communicates with box body inside; This through hole 123 has the opening 124 towards the outside, and it is inner and electrically connect with terminal that cable 2 stretches into box body from opening 124 through through hole 123.Between joint 121 and sidewall 11, be connected with the intensity of reinforcement 111 in order to reinforced joint 121.Because joint 121 protrudes in antetheca 12, opening 124 will can not be formed at the outer surface of antetheca 12 away from antetheca 12, and joint 121 can not produce the slit with the joint of antetheca 12 like this, and steam also just can't get into.In addition, joint 121 is provided with external screw thread.

Through hole 123 is provided with the container cavity 125 near opening 124, and the bottom of container cavity 125 is provided with step surface 126.That is, container cavity 125 is between opening 124 and step surface 126.For anti-sealing gets into from opening 124, contain plug 3 and interior pawl 4 in the container cavity 125.Plug 3 is processed by elastomeric material, and is corrosion-resistant and ageing-resistant, comprises pressure section 31 and socket part 32, and preferably, pressure section 31 all is a hollow cylindrical and coaxial with socket part 32, and the diameter of socket part 32 is slightly less than pressure section 31 diameters.Interior pawl 4 is processed for flexible plastic material, has good toughness, the difficult fracture.Preferably, interior pawl adopts nylon PA66 material to process.Interior pawl 4 has main part 41 and the radially outside open some claws 42 of autonomous body 41 1 ends.In the specific operation process; At first the main part 41 with interior pawl 4 is enclosed within on the socket part 32 of plug 3, then with both together in opening 124 is filled in container cavity 125, be held in step surface 126 until the pressure section 31 of plug 3; At this moment, the claw 42 of interior pawl 4 is positioned at outside the opening 124.At this moment cable 2 can be through interior pawl 4, plug 3, that through hole 123 gets into box bodys is inner; At last with one have internal thread back cover 6 be enclosed within on the cable 2; And be connected with joint 121 through screw thread; Back cover 6 is in the process of being screwed into, thereby the claw of interior pawl 4 42 inwardly draws clamping cables 2 in, prevents that it breaks away from box body 1 because of external force.

The utility model center tap is outstanding and one-body molded with box body forward from antetheca, can not produce the slit at joint and antetheca joint, thereby prevents that steam from getting into.

Be to be understood that; Though this specification is described according to execution mode; But be not that each execution mode only comprises an independently technical scheme, this narrating mode of specification only is for clarity sake, and those skilled in the art should make specification as a whole; Technical scheme in each execution mode also can form other execution modes that it will be appreciated by those skilled in the art that through appropriate combination.

The listed a series of detailed description of preceding text only is specifying to the feasibility execution mode of the utility model; They are not the protection range in order to restriction the utility model, allly do not break away from equivalent execution mode or the change that the utility model skill spirit done and all should be included within the protection range of the utility model.

Claims

1. terminal box; Comprise box body, be positioned at the inner terminal of box body and extend into the inner cable that electrically connects with terminal of box body; Said box body comprises sidewall and connects the antetheca of sidewall; It is characterized in that: said antetheca one is equipped with joint forward, and this joint is provided with the through hole that communicates with box body inside, and through hole is provided with the opening that supplies cable to insert.

2. terminal box according to claim 1 is characterized in that: be connected with reinforcement between said joint and the sidewall.

3. terminal box according to claim 1 is characterized in that: said joint has external screw thread.

4. according to each described terminal box in the claim 1 to 3, it is characterized in that: be provided with step surface in the said through hole, form container cavity between said opening and the step surface, said container cavity contains plug and the interior pawl that cooperatively interacts.

5. terminal box according to claim 4 is characterized in that: said plug comprises the pressure section that is held in said step surface and supplies the socket part of said interior pawl socket.

6. terminal box according to claim 5 is characterized in that: pawl comprises and is socketed in the main part on the said socket part and is positioned at the radially outside open claw of open outer side in said.

7. terminal box according to claim 4 is characterized in that: said plug is processed by elastomeric material.

8. terminal box according to claim 4 is characterized in that: pawl is processed by flexible plastic material in said.

9. terminal box according to claim 6 is characterized in that: also comprise tapped back cover, said back cover is connected with joint screw thread.

10. terminal box according to claim 9 is characterized in that: back cover is in rundown process, and the claw of interior pawl inwardly draws in clamping cables.