WO2012110685A1 - Electrical protection enclosure - Google Patents
Electrical protection enclosure Download PDFInfo
- Publication number
- WO2012110685A1 WO2012110685A1 PCT/FI2012/000006 FI2012000006W WO2012110685A1 WO 2012110685 A1 WO2012110685 A1 WO 2012110685A1 FI 2012000006 W FI2012000006 W FI 2012000006W WO 2012110685 A1 WO2012110685 A1 WO 2012110685A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- washer
- housing
- hole
- cogged
- enclosure
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/28—Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
Definitions
- the present invention relates to enclosures for electrical equipment which are used to secure the contact-protection and to protect electrical equipment from environmental influences.
- an encapsulated electric motor safety switch to prevent an accidental start-up during the maintenance work has to be placed on an electric motor in the immediate vicinity.
- the metal structures, such as sheet steel enclosures easily moisture condenses inside-age to. If the condensed water is not drained from the enclosure, the water may cause interference with any electrical device, at worst, a short circuit.
- the easiest way is to arrange one or more of a small hole in the bottom of the casing, so that condensed water can freely cast-off of the chassis.
- a plastic cap which can be printed on the hole punched on the bottom of the casing, and which has a groove or channel arranged for discharging water from the enclosure.
- housing protection class should be at least splash-waterproof IP44, where the first number indicates that the enclosure is protected by a very small pieces with a diameter of more than 1 mm larger accessing in the and the latter number indicates that the housing is protected against splashing water.
- the present invention is based on the structure of a housing lower part; preferably the bottom wall is pierced by at least one hole, through which a fastening device such as a bolt which holds the opening on the housing exterior and interior surface such toothed washers that form the channels allowing-the condensate dripping out of the housing.
- a fastening device such as a bolt which holds the opening on the housing exterior and interior surface such toothed washers that form the channels allowing-the condensate dripping out of the housing.
- Bolt is equipped with a nut to tighten the arrangement to a torque that the teeth do not sink on the housing surface preventing the water route out of the case.
- the invention is particularly advantageous in that it can be used to achieve the mass-produced standard components.
- Figure 1 shows the electrical equipment enclosure
- Figure 2 shows a cogged washer
- FIG. 3 shows the arrangement in accordance with the present invention
- Figure 4 shows a bolt equipped with a flange with locking teeth
- Figure 5 shows a nylon-locking flange nut
- FIG. 1 shows an enclosed switch, which is intended for installation in the field and can therefore be subjected to demanding environmental conditions such as cleaning the process equipment by water jet.
- the housing is typically made of steel sheet, and the water can be condensed in due to temperature variations.
- the steel plate is typically 1 ,5 - 2 mm in thickness.
- the housing may also be manufactured of light metal such as aluminum, or plastic. In this case, the wall thickness of the steel is often much greater than used in the disc housing.
- Figure 2 shows a cogged washer, which is conical and on the convex side scored rough and another side is provided with a couple of teeth 6, typically about four to six units.
- Nomel ® locking washer represents such a commercial product.
- Fig 3 shows the invention arranged on the enclosure according to Figure 1.
- the housing bottom wall is pierced by a hole 2.
- the bolt 3 is assembled through the hole 2 and holds by the nut 5 the cogged washers 4 in their position on both sides of the housing wall.
- a cogged washer is installed so that the teeth 6 are against the wall of the housing, when a channel is composed for draining the water out of the housing.
- the hole 2 must be broad enough, so that a sufficient channel between the bolt and the hole edge remains for draining the water out.
- the bolt is recommended to be surrounded by a sleeve, which length is that much greater than the thickness of the wall of the housing that the nut is prevented to be tightened too tight so that the teeth 6 are not going to enter the wall of the housing.
- a pull-rivet for example by a so-called "pop rivet"
- you can not itself determine the tight- ening torque then the sleeve securing that the serrated washers 4 shall remain at a suitable distance from each other and not going to enter the housing wall in 1.
- Nut 5 is preferably a nylon lock nut so that it can be safely left on loose enough, it still does not become detached by vibrations and the tightening torque is maintained at the right cogged washers 4 with a suitable pressure against the housing wall 1.
- the cogged washer 4 flange diameter should be well larger than the hole of the wall so that especially the washer outside of the housing can effectively protect splash of the penetration of water inside the casing and preferably a similar washer ais used inside the housing, in which case direct orientation of the water jet to the up- per parts of the housing and electrical circuits mounted there is blocked.
- one of the above mentioned arrangements is sufficient to lead the condensed water out for the cabinet, but more than one can be fitted into one housing, as well.
- the air circulation is obtained for the housing improving electronic equipment cooling.
- different sizes of bolt-washer combinations may be selected.
- Fig 4 shows a flange-bolt 7, which flange has a dense cogging.
- the bolt 3 and the outer washer 4 can be replaced by a flange-bolt 7.
- Fig 5 shows the nylon lock nut 8 having a dense cogging correspondingly with a flange-bolt.
- the cogged washer 4 and a locking nut 5 can be may be replaced by cogged flange-nut 8 .
- Flange-nut 8 may be used either for the normal bolt 3 and an outer toothed washer, or 4 with the flange-bolt 7, such as the flange-bolt 7 can respectively be used in various types of internal side of the nuts and washers.
- the invention is not limited to the housing, from any of the switches, but the invention can be used in numerous applications where the corresponding housings are used.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Casings For Electric Apparatus (AREA)
- Motor Or Generator Frames (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR212013020538U BR212013020538U2 (en) | 2011-02-14 | 2012-02-14 | electrical protection enclosure |
ES201390009U ES1092630Y (en) | 2011-02-14 | 2012-02-14 | Electrical protection housing |
DE212012000053U DE212012000053U1 (en) | 2011-02-14 | 2012-02-14 | Electrical protective housing |
RU2013142041/07U RU139757U1 (en) | 2011-02-14 | 2012-02-14 | PROTECTIVE CASE FOR ELECTRICAL EQUIPMENT |
CN201290000283.4U CN203707601U (en) | 2011-02-14 | 2012-02-14 | Electrical-protection sealing housing |
BG002613U BG1923U1 (en) | 2011-02-14 | 2013-08-23 | Electrical protective cabine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI20110052U FI9212U1 (en) | 2011-02-14 | 2011-02-14 | Electrical housing |
FIU20110052 | 2011-02-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012110685A1 true WO2012110685A1 (en) | 2012-08-23 |
Family
ID=43629887
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FI2012/000006 WO2012110685A1 (en) | 2011-02-14 | 2012-02-14 | Electrical protection enclosure |
Country Status (9)
Country | Link |
---|---|
CN (1) | CN203707601U (en) |
BG (1) | BG1923U1 (en) |
BR (1) | BR212013020538U2 (en) |
CZ (1) | CZ26108U1 (en) |
DE (1) | DE212012000053U1 (en) |
ES (1) | ES1092630Y (en) |
FI (1) | FI9212U1 (en) |
RU (1) | RU139757U1 (en) |
WO (1) | WO2012110685A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2405927A (en) * | 1944-10-11 | 1946-08-13 | Appleton Electric Co | Drain fitting |
US4657459A (en) * | 1984-12-10 | 1987-04-14 | Sps Technologies, Inc. | Vibration resistant fasteners |
DE4429312A1 (en) * | 1994-08-18 | 1996-02-29 | Daimler Benz Ag | Washer for screw connections |
EP0975077A1 (en) * | 1998-07-24 | 2000-01-26 | Lagra Elektrotechnik GmbH | Screw assembly for aeration, deaeration and condensate removal |
JP2006299750A (en) * | 2005-04-25 | 2006-11-02 | Nippon Sharyo Seizo Kaisha Ltd | Drain bolt-nut and stagnant water preventive drain structure of steel box using this drain bolt-nut |
-
2011
- 2011-02-14 FI FI20110052U patent/FI9212U1/en not_active IP Right Cessation
-
2012
- 2012-02-14 WO PCT/FI2012/000006 patent/WO2012110685A1/en active Application Filing
- 2012-02-14 DE DE212012000053U patent/DE212012000053U1/en not_active Expired - Lifetime
- 2012-02-14 BR BR212013020538U patent/BR212013020538U2/en not_active Application Discontinuation
- 2012-02-14 CN CN201290000283.4U patent/CN203707601U/en not_active Expired - Fee Related
- 2012-02-14 RU RU2013142041/07U patent/RU139757U1/en not_active IP Right Cessation
- 2012-02-14 CZ CZ201328301U patent/CZ26108U1/en not_active IP Right Cessation
- 2012-02-14 ES ES201390009U patent/ES1092630Y/en not_active Expired - Fee Related
-
2013
- 2013-08-23 BG BG002613U patent/BG1923U1/en unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2405927A (en) * | 1944-10-11 | 1946-08-13 | Appleton Electric Co | Drain fitting |
US4657459A (en) * | 1984-12-10 | 1987-04-14 | Sps Technologies, Inc. | Vibration resistant fasteners |
DE4429312A1 (en) * | 1994-08-18 | 1996-02-29 | Daimler Benz Ag | Washer for screw connections |
EP0975077A1 (en) * | 1998-07-24 | 2000-01-26 | Lagra Elektrotechnik GmbH | Screw assembly for aeration, deaeration and condensate removal |
JP2006299750A (en) * | 2005-04-25 | 2006-11-02 | Nippon Sharyo Seizo Kaisha Ltd | Drain bolt-nut and stagnant water preventive drain structure of steel box using this drain bolt-nut |
Also Published As
Publication number | Publication date |
---|---|
DE212012000053U1 (en) | 2013-09-23 |
ES1092630U (en) | 2013-11-07 |
BR212013020538U2 (en) | 2016-08-23 |
RU139757U1 (en) | 2014-04-20 |
BG1923U1 (en) | 2014-06-30 |
ES1092630Y (en) | 2014-01-28 |
CN203707601U (en) | 2014-07-09 |
CZ26108U1 (en) | 2013-11-18 |
FIU20110052U0 (en) | 2011-02-14 |
FI9212U1 (en) | 2011-05-12 |
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