CN102184992A - Junction box - Google Patents
Junction box Download PDFInfo
- Publication number
- CN102184992A CN102184992A CN2011101049011A CN201110104901A CN102184992A CN 102184992 A CN102184992 A CN 102184992A CN 2011101049011 A CN2011101049011 A CN 2011101049011A CN 201110104901 A CN201110104901 A CN 201110104901A CN 102184992 A CN102184992 A CN 102184992A
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- CN
- China
- Prior art keywords
- seal sleeve
- nut
- bolt
- diameter
- sealing sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Installation Of Indoor Wiring (AREA)
Abstract
The invention discloses a junction box. The junction box comprises a box body; the sidewall of the box body is provided with at least one hollow bolt; the hollow bolt is matched with a nut; a cable passes through the bolt and enters the box body; the inner diameter of the rear end of the nut is smaller than that of the front end of the nut; a combined washer is arranged in the nut; the combined washer consists of an inner sealing sleeve and an outer sealing sleeve; the inner sealing sleeve is a hollow cylinder made of an elastic material; the front end of the inner sealing sleeve is provided with a boss; the outer sealing sleeve is sleeved outside the inner sealing sleeve, and the inner diameter of the front end of the outer sealing sleeve is smaller than the outer diameter of the boss at the front end of the inner sealing sleeve; the rear part of the outer sealing sleeve is provided with at least four longitudinal through grooves; an annular edge is formed in the bolt; and the diameter of the end surface of the annular edge is larger than the inner diameter of the boss at the front end of the inner sealing sleeve but smaller than the outer diameter of the l boss, and the annular edge is tightly pressed against the inner sealing sleeve. The invention has the advantages that: the junction box is waterproof, and can effectively prevent the cable from slipping, so the junction box can be used in any humid environment and harsh outdoor environment.
Description
Technical field
The present invention relates to a kind of terminal box, especially relate to a kind of terminal box that is connected usefulness with solar module, it comprises a box body, and box side wall has at least one hollow bolt, matches with nut, and cable passes bolt and enters box body.
Background technology
Many groups solar module that solar power generation adopts matrix form to arrange converts daylight to electric energy, and wherein each group solar module is connected with terminal box, and terminal box is connected with other parts of solar power system again.Because the terminal box long-term work out of doors, the reasonability of Design of Mechanical Structure and the quality of quality are directly connected to the efficient of electrical transmission.
For a long time, people adopt in the perforate of terminal box side, and cable is fixed in the terminal box box body by connectors such as bolts after passing this hole, and the cable of this terminal box is easily from the box body landing.Therefore in addition because the terminal box operational environment is out of doors, if run into the rainy day or around under the situation of humid environment, water can infiltrate in the terminal box along side opening, thereby causes electric leakage to wait serious accident, even entail dangers to arrives personal safety.People improve above-mentioned terminal box for this reason, promptly enter the box body place and be provided with bolt and nut at cable, bolt and nut that cable passes after the cooperation enter box body, in box body, fix again, after adopting this method, cable can be fixed with box body better, thereby improve its connection situation.But its water proofing property is still not fully up to expectations, in actual use, rainwater might be from the rear end along bolt and the space between cable enter the electrical connections of cable, also might be from front end along bolt and the connecting thread of nut enter in the bolt, can drench the electrical connections of cable equally.
Summary of the invention
The purpose of this invention is to provide the better terminal box of a kind of water resistance.
For this reason, the technical solution used in the present invention is such: terminal box, comprise a box body, box side wall has at least one hollow bolt, match with nut, cable passes bolt and enters box body, described nut back end inside diameter is less than front inner diameter, be provided with a bonded washer in the nut, this bonded washer is made up of an inner seal sleeve and an outer seal sleeve, and described inner seal sleeve is the hollow circular cylinder that elastomeric material is made, front end has a boss, described outer seal sleeve is linked in outside the inner seal sleeve, and its front inner diameter is less than described inner seal sleeve front end boss external diameter, and the outer seal sleeve rear portion has at least 4 vertical penetrating grooves; Have an annular rib in the described bolt, this annular rib end face diameter, and is closely conflicted with inner seal sleeve less than its external diameter greater than inner seal sleeve front end boss internal diameter.
Further, the annular rib sidewall of described bolt is a V-type.
Described outer seal sleeve front end external diameter equals described inner seal sleeve front end boss external diameter.
The fluted tail at described outer seal sleeve rear portion is to clockwise drift 3
0-10
0
The present invention in use, cable at first contacts with inner seal sleeve, the outside fit of inner seal sleeve outer seal sleeve, the outer seal sleeve outside is a nut, the internal diameter of nut rear end is less than front inner diameter, and is fashionable when bolt and nut are twisted, can be with inwardly extruding forward of outer seal sleeve.At first, when outer seal sleeve is inwardly pushed, because the outer seal sleeve rear portion is penetrating groove structure, have elasticity, outer seal sleeve rear portion after stressed can compress inner seal sleeve, and inner seal sleeve is an elastic material, can compress the cable that passes behind the pressurized, at this moment inner seal sleeve closely contacts with cable, makes that water or other liquid can't be by the electrical connections in the infiltration of the space between cable and the inner seal sleeve box body.In addition, when after outer seal sleeve is stressed, pushing forward, because the outer seal sleeve front inner diameter is less than inner seal sleeve front end boss external diameter, outer seal sleeve front end external diameter is identical with inner seal sleeve front end boss external diameter, therefore outer seal sleeve will promote inner seal sleeve and forward masterpiece will be used for annular rib in the bolt, and the V-structure of annular rib sidewall makes this annular rib cut the boss of inner seal sleeve as cutter, make it produce elastic deformation, both do not have the space by contact-making surface, and rainwater can not infiltrate cable by the space of bolt and inner seal sleeve.
Certainly, by general knowledge as can be known, owing to tight a bolt and the direction during nut is clockwise, therefore when the penetrating groove at outer seal sleeve rear portion during to clockwise drift, the better effects if that compresses.
In addition, the boss surface on the inner seal sleeve is flat shape not necessarily, also can be elliptical shape or other shapes, as long as can contact closely with the annular rib in the bolt.
Employing the invention has the beneficial effects as follows: the terminal box waterproof, simultaneously effectively prevent the cable landing, and can be used in any wet environment and the abominable outdoor environment.
Description of drawings
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the part sectioned view of coupling part of the present invention.
Fig. 3 is the schematic diagram of outer seal sleeve of the present invention.
Fig. 4 is an outer seal sleeve cross-sectional view of the present invention.
Embodiment
Referring to Fig. 1, cable 1 passed nut 2, outer seal sleeve 5, inner seal sleeve 6 and bolt 3 after, bolt 3 and nut 2 are twisted and are closed.The connection diagram of each parts as shown in Figure 2 after stubborn the closing, when cable 1 passes nut 2 and bolt 3, and between the nut 2, bolt 3 space is arranged all, the afterbody bifurcated of cable 1 and outer seal sleeve 5 is close to, the inwall of the afterbody of outer seal sleeve 5 and nut 2 is close to, and the space between outer seal sleeve 5 and the nut 2 is filled by fluid sealant 7; In the outer seal sleeve 5 fits inner seal sleeve 6, the front end boss 61 of inner seal sleeve 6 rests on the front end face of outer seal sleeve 5, the external diameter of the front end boss 61 of inner seal sleeve 6 is identical with the front end face external diameter of outer seal sleeve 5, the front end of the boss of inner seal sleeve 6 and outer seal sleeve 5 all enters in the bolt 3, the front end boss 61 of inner seal sleeve 6 contacts with bolt 3 interior annular ribs 31, annular rib 31 is cut as cutter in the end face of front end boss 61 of inner seal sleeve 6, and cable 1 and inner seal sleeve 6 closely cooperate.As shown in Figure 2, outer seal sleeve 5 is close to inner seal sleeve 6 and cable 1, make rainwater can not enter by the space between cable 1 and the nut 2, outer seal sleeve 5 and nut 2 are close to, have simultaneously fluid sealant 7 to fill again, make rainwater can not enter by the screw thread space of bolt 3 and nut 2, the annular rib 31 of inner seal sleeve 6 and bolt 3 is close to, make rainwater can not enter through the sidewall space of inner seal sleeve 6 and outer seal sleeve 5 and bolt 3 again by the space of bolt and nut.
For realizing above-mentioned water-proof function, when cable 1 is received terminal box 4, at first fluid sealant 7 is coated in the middle recess part of outer seal sleeve 5 front ends and afterbody, then outer seal sleeve 5 is inserted in the nut 2.As shown in Figure 3, the rear portion of outer seal sleeve 5 has 12 penetrating grooves 51, these grooves 51 have formed 12 bifurcateds 8, because the groove 51 of outer seal sleeve 5 is to be formed by the space between the bifurcated 8, the offset direction of groove 51 afterbodys promptly is the offset direction of bifurcated 8.During production, the axis of groove 51 with outer seal sleeve 5 formed to clockwise drift 5
0Angle after, nut 2 and bolt 3 are being twisted fashionable, the bifurcated 8 at outer seal sleeve 5 rear portions is easy to close direction and nut 2 is close together along with twisting.Inner seal sleeve 6 front end boss 61 external diameters are identical with outer seal sleeve 5 front end external diameters, the internal diameter of inner seal sleeve 6 front end boss 61 is less than outer seal sleeve 5 front inner diameter simultaneously, when being linked in inner seal sleeve 6 within the outer seal sleeve 5, the boss 61 of inner seal sleeve 6 is to rest on the front end face of outer seal sleeve 5, the internal diameter of nut 2 rear ends is less than front inner diameter, when nut 2 turns to bolt 3, nut 2 will be to bolt 3 directions extruding outer seal sleeve 5, thereby promote the annular rib of front end boss 61 hold-down bolts 3 of inner seal sleeve 6, further twist and close, so annular rib 31 is cut the front end boss 61 of inner seal sleeve 6 as cutter.
As shown in Figure 4,12 bifurcateds 8 are arranged on outer seal sleeve 5, when the axis AB of the limit of bifurcated 8 CD and outer seal sleeve 5 forms one to clockwise drift 5
0Angle the time, promptly groove 51 forms to clockwise drift 5 with the axis of outer seal sleeve 5
0Angle the time, sealing effectiveness is better.The present invention finds that by a large amount of tests the fluted tail at outer seal sleeve 5 rear portions is to the clockwise drift minute angle, promptly 3 in actual production
0-10
0Within, can both play good sealing effectiveness.
Penetrating groove on the outer seal sleeve 5 can not limit to and has only 12, also can be 8, perhaps 14, as long as can help sealing between nut and the outer seal sleeve, all falls within protection scope of the present invention.
Claims (4)
1. terminal box, comprise a box body, box side wall has at least one hollow bolt, match with nut, cable passes bolt and enters box body, it is characterized in that: described nut back end inside diameter is less than front inner diameter, be provided with a bonded washer in the nut, this bonded washer is made up of an inner seal sleeve and an outer seal sleeve, described inner seal sleeve is the hollow circular cylinder that elastomeric material is made, and front end has a boss, and described outer seal sleeve is linked in outside the inner seal sleeve, its front inner diameter is less than described inner seal sleeve front end boss external diameter, and the outer seal sleeve rear portion has at least 4 vertical penetrating grooves; Have an annular rib in the described bolt, this annular rib end face diameter, and is closely conflicted with inner seal sleeve less than its external diameter greater than inner seal sleeve front end boss internal diameter.
2. terminal box as claimed in claim 1 is characterized in that: the annular rib sidewall of described bolt is a V-type.
3. terminal box as claimed in claim 1 is characterized in that: described outer seal sleeve front end external diameter equals described inner seal sleeve front end boss external diameter.
4. as claim 1 or 2 or 3 described terminal boxes, it is characterized in that: the fluted tail at described outer seal sleeve rear portion is to clockwise drift 3
0-10
0
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101049011A CN102184992A (en) | 2011-04-26 | 2011-04-26 | Junction box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101049011A CN102184992A (en) | 2011-04-26 | 2011-04-26 | Junction box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102184992A true CN102184992A (en) | 2011-09-14 |
Family
ID=44571128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101049011A Pending CN102184992A (en) | 2011-04-26 | 2011-04-26 | Junction box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102184992A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105471388A (en) * | 2016-01-20 | 2016-04-06 | 浙江鑫辉光伏科技有限公司 | Long-service-life and high-reliability maintainable photovoltaic terminal box |
| CN106385232A (en) * | 2016-10-26 | 2017-02-08 | 东莞市天合机电开发有限公司 | High-efficiency sealed wiring port on photovoltaic junction box |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08250198A (en) * | 1995-03-14 | 1996-09-27 | Sumitomo Wiring Syst Ltd | Sealing structure of connector |
| CN2420745Y (en) * | 2000-05-29 | 2001-02-21 | 石油地球物理勘探局装备制造总厂 | Waterproof plug |
| CN201044294Y (en) * | 2007-05-29 | 2008-04-02 | 扬中市通灵电器设备厂 | Solar wiring box conductor jointer |
| WO2008074965A1 (en) * | 2006-12-19 | 2008-06-26 | Prysmian Cables & Systems Limited | Cable gland for a housing |
| CN201226439Y (en) * | 2008-06-05 | 2009-04-22 | 中航光电科技股份有限公司 | Joint for sealing cable |
| CN201487398U (en) * | 2009-07-30 | 2010-05-26 | 比亚迪股份有限公司 | Cable sealing structure and wiring box |
| CN201717439U (en) * | 2010-05-28 | 2011-01-19 | 吕纪坤 | Sealing nut for connection of solar battery cables |
-
2011
- 2011-04-26 CN CN2011101049011A patent/CN102184992A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08250198A (en) * | 1995-03-14 | 1996-09-27 | Sumitomo Wiring Syst Ltd | Sealing structure of connector |
| CN2420745Y (en) * | 2000-05-29 | 2001-02-21 | 石油地球物理勘探局装备制造总厂 | Waterproof plug |
| WO2008074965A1 (en) * | 2006-12-19 | 2008-06-26 | Prysmian Cables & Systems Limited | Cable gland for a housing |
| CN201044294Y (en) * | 2007-05-29 | 2008-04-02 | 扬中市通灵电器设备厂 | Solar wiring box conductor jointer |
| CN201226439Y (en) * | 2008-06-05 | 2009-04-22 | 中航光电科技股份有限公司 | Joint for sealing cable |
| CN201487398U (en) * | 2009-07-30 | 2010-05-26 | 比亚迪股份有限公司 | Cable sealing structure and wiring box |
| CN201717439U (en) * | 2010-05-28 | 2011-01-19 | 吕纪坤 | Sealing nut for connection of solar battery cables |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105471388A (en) * | 2016-01-20 | 2016-04-06 | 浙江鑫辉光伏科技有限公司 | Long-service-life and high-reliability maintainable photovoltaic terminal box |
| CN105471388B (en) * | 2016-01-20 | 2017-12-26 | 浙江鑫辉光伏科技有限公司 | A kind of long-life highly reliable maintainable photovoltaic junction box |
| CN106385232A (en) * | 2016-10-26 | 2017-02-08 | 东莞市天合机电开发有限公司 | High-efficiency sealed wiring port on photovoltaic junction box |
| CN106385232B (en) * | 2016-10-26 | 2018-11-09 | 赵晟凯 | Efficient sealed Wiring port on a kind of photovoltaic junction box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Lin Yueming Inventor before: Lin Yueming Inventor before: Duan Lijun Inventor before: Chen Lizhi |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: LIN YUEMING DUAN LIJUN CHEN LIZHI TO: LIN YUEMING |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110914 |