CN202018980U - Junction box - Google Patents
Junction box Download PDFInfo
- Publication number
- CN202018980U CN202018980U CN2011201266678U CN201120126667U CN202018980U CN 202018980 U CN202018980 U CN 202018980U CN 2011201266678 U CN2011201266678 U CN 2011201266678U CN 201120126667 U CN201120126667 U CN 201120126667U CN 202018980 U CN202018980 U CN 202018980U
- Authority
- CN
- China
- Prior art keywords
- seal sleeve
- sealing sleeve
- diameter
- bolt
- outer seal
- 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.)
- Expired - Lifetime
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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 utility model discloses a junction box. The junction box comprises a box body, at least one hollow bolt matched with a screw cap is arranged on the side wall of the box body; a cable enters into the box body through penetrating the bolt; the inner diameter at the rear end of the screw cap is smaller than that at the front end; a combined gasket consisting of an inner sealing sleeve and an outer sealing sleeve is arranged in the screw cap; the inner sealing sleeve adopts a hollow cylinder made of an elastic material and a lug boss is formed at the front end of the inner sealing sleeve; the outer sealing sleeve is sleeved outside the inner sealing sleeve, and the inner diameter at the front end of the outer sealing sleeve is smaller than the outer diameter of the lug boss at the front end of the inner sealing sleeve; at least four lengthways penetrating grooves are formed at the rear part of the outer sealing sleeve; a ring-shaped edge is formed in the bolt, the diameter of the end surface of the ring-shaped edge is larger than the inner diameter of the lug boss at the front end of the inner sealing sleeve and smaller than the outer diameter of the lug boss, and the ring-shaped edge is tightly clung to the inner sealing sleeve; and the tail parts of the grooves at the rear part of the outer sealing sleeve deflect by 11-15 degrees clockwise. The junction box has the benefit that the junction box is waterproof and can effectively prevent cable slipping off, so as to adapt to any moist environment and harsh outdoor environments.
Description
Technical field
The utility model relates to a kind of terminal box, especially relates to a kind of terminal box that is connected usefulness with solar module, and 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 utility model provides the better terminal box of a kind of water resistance.
For this reason, the technical solution adopted in the utility model 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; The fluted tail at described outer seal sleeve rear portion is to clockwise drift 11
0-15
0
Further improve, the annular rib sidewall of described bolt is a V-type.
Further improve, described outer seal sleeve front end external diameter equals described inner seal sleeve front end boss external diameter.
The utility model 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.In addition, it is fashionable to twist at bolt and nut, and it is twisted and closes direction is clockwise direction, find according to a large amount of tests, when the penetrating groove at outer seal sleeve rear portion to clockwise drift 11
0-15
0The time, just can reach good sealing effectiveness.
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.
The employing the beneficial effects of the utility model are: 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
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the part sectioned view of the utility model coupling part.
Fig. 3 is the schematic diagram of the utility model outer seal sleeve.
Fig. 4 is the utility model outer seal sleeve cross-sectional view.
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 then.The connection diagram of each parts as shown in Figure 2 after stubborn the closing, cable 1 all has the space when passing nut 2 and passing bolt 3, and the afterbody bifurcated of cable 1 and outer seal sleeve 5 is close to, and 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 11
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 11
0Angle the time, promptly groove 51 forms to clockwise drift 11 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 clockwise drift 11 in actual production
0-15
0Within angle, 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 the protection range of the present utility model.
Claims (3)
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; The fluted tail at described outer seal sleeve rear portion is to clockwise drift 11
0-15
0
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201266678U CN202018980U (en) | 2011-04-27 | 2011-04-27 | Junction box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201266678U CN202018980U (en) | 2011-04-27 | 2011-04-27 | Junction box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202018980U true CN202018980U (en) | 2011-10-26 |
Family
ID=44812648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201266678U Expired - Lifetime CN202018980U (en) | 2011-04-27 | 2011-04-27 | Junction box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202018980U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104734409A (en) * | 2013-12-20 | 2015-06-24 | 珠海格力节能环保制冷技术研究中心有限公司 | Wire fastening device |
| CN105281113A (en) * | 2015-11-13 | 2016-01-27 | 无锡华昊电器股份有限公司 | Electric automobile waterproof connector |
| CN105790487A (en) * | 2016-01-29 | 2016-07-20 | 无锡华昊电器股份有限公司 | Waterproof joint structure for electric vehicle |
-
2011
- 2011-04-27 CN CN2011201266678U patent/CN202018980U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104734409A (en) * | 2013-12-20 | 2015-06-24 | 珠海格力节能环保制冷技术研究中心有限公司 | Wire fastening device |
| CN105281113A (en) * | 2015-11-13 | 2016-01-27 | 无锡华昊电器股份有限公司 | Electric automobile waterproof connector |
| CN105790487A (en) * | 2016-01-29 | 2016-07-20 | 无锡华昊电器股份有限公司 | Waterproof joint structure for electric vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHEJIANG RENHE SOLAR TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: RENHE PHOTOVOLTAIC TECHNOLOGY CO., LTD. Effective date: 20130521 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130521 Address after: 315322 No. four Jiang Jiang Road, 5 Xin Town, Zhejiang, Cixi Patentee after: Zhejiang Renhe Solar Technology Co., Ltd. Address before: Cixi City, new town, four Tong River Road 315322 Zhejiang city of Ningbo Province, No. 5 Patentee before: Renhe Photovoltaic Technology Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111026 |