GB2099631A - Electric circuit breaker with a terminal cover - Google Patents
Electric circuit breaker with a terminal cover Download PDFInfo
- Publication number
- GB2099631A GB2099631A GB8206491A GB8206491A GB2099631A GB 2099631 A GB2099631 A GB 2099631A GB 8206491 A GB8206491 A GB 8206491A GB 8206491 A GB8206491 A GB 8206491A GB 2099631 A GB2099631 A GB 2099631A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuit breaker
- terminal cover
- terminal
- locking
- engaging
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/02—Bases, casings, or covers
- H01H9/0264—Protective covers for terminals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/02—Housings; Casings; Bases; Mountings
- H01H71/0207—Mounting or assembling the different parts of the circuit breaker
- H01H2071/0242—Assembling parts of a circuit breaker by using snap mounting techniques
-
- 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
- H02B1/015—Boards, panels, desks; Parts thereof or accessories therefor
- H02B1/06—Boards, panels, desks; Parts thereof or accessories therefor having associated enclosures, e.g. for preventing access to live parts
Landscapes
- Connections Arranged To Contact A Plurality Of Conductors (AREA)
Abstract
A circuit breaker 1 comprises a terminal cover 2 of insulating material with a substantially U-shaped flexible projection 2C which has an engaging projection 2E for engaging with a shoulder portion 1E of the circuit breaker housing. A locking rod 6 may be inserted in the Recess 2G and secured by a wire (5, Figure 7, not shown) for further securement. <IMAGE>
Description
SPECIFICATION
Circuit breaker
Field of the invention
The present invention relates to a circuit
breaker. More particularly, it relates to an
improved structure of a terminal cover having
excellent fitting and locking properties which
protects the terminal of the circuit breaker and
prevents accidental touch to the charged
terminal.
Figure 1 shows a terminal cover of the
conventional circuit breaker wherein the reference
numeral (1) designates the casing of a circuit
breaker body, (2) designates a terminal cover
covering a charged portion, (2A) designates an
orificed projection formed on the terminal cover
(2), (3) designates a fitting screw for fitting the
terminal cover (2) to the casing (1), (4) designates
a locking screw for fitting and locking the terminal
cover (2) to the casing (1), (5) designates a
locking wire which passes through the orificed
projection (2A) of the terminal cover (2) and the
locking screw (4).
In the structure of the terminal cover of the
conventional circuit breaker, when the terminal
cover (2) is fitted to the casing (1) by the fitting
screw (3) and the locking screw (4), it is
necessary to embed a nut for engaging the fitting
screw (3) and the locking screw (4). in the casing
made of synthetic resin or to directly form a
female screw hole in the casing (1). The former
structure has a disadvantage of a high
manufacturing cost because ofmolding a special
casing. The latter structure has a disadvantage in that the female screw hole is easily broken by
repeated fastening operations because the
strength of the casing is small.*Furthermore, attaching and detaching operations of the
terminal cover (2) is troublesome because it is
necessary to fit and remove the fitting screw (3)
and the locking screw (4).
Summary of the invention:
It is an object of the present invention to
overcome the disadvantages of the conventional
circuit breaker and to provide a circuit breaker which allows instant attaching and detaching
operation of a terminal cover as well as locking
operation.
The foregoing and the other object of the present invention have been attained by providing
a circuit breaker having a terminal exposing on
the casing which comprises a terminal cover of
insulating material which has insertion holes
formed near said terminal and having an inner
shoulder portion, a covering portion for covering
said terminal, and a substantially U-shaped
flexible projection which is to be inserted into said
insertion hole and which has a flexible engaging
piece provided with an engaging projection for
engaging said shoulder portion.
Brief description of the drawings:
Figure 1 is a schematic view of the conventional circuit breaker;
Figures 2 to 7 show schematically an important part of an embodiment of the circuit breaker of the present invention in which Figure 2 is a front view of a terminal;
Figure 3 is a side view of Figure 2;
Figure 4 is a front view of a terminal cover;
Figure 5 is a sectional view taken along A-A line of Figure 4; and
Figure 7 is a view similar to Figure 6.
Detailed description of the preferred embodiment:
An embodiment of the circuit breaker of the present invention will be described with reference to Figures 2 to 7.
In the figures, the casing (1) of a circuit breaker comprises a cover ( 1 A) and a base (18). A pair of insertion holes ( 1 C), ( 1 D) are formed in the cover ( 1 A) and the base ( 1 B) so as to pass through them in alignment and each hole receives a fitting bolt for fitting the circuit breaker to a fitting panel (7).
A shoulder portion ( 1 E) is formed at the upper portion of the insertion hole (it). A terminal (1 F) exposes on the casing (1) and a terminal cover (2) made of insulation material is placed to cover the terminal ( 1 F). A substantially U-shaped, flexible projection (2C) is formed on the inner surface of the terminal cover. The flexible projection is to be inserted into the upper portion of the insertion hole ( 1 C) on one side. The flexible projection (2C) has its free end (2F) as an engaging piece for engagement on which an engaging projection (2E) is formed to engage with the shoulder portion (1 E).A projecting pole (2D) is formed on the terminal cover and projects in substantially parallel to the flexible projection (2C) so as to be inserted into the other insertion hole ( 1 D). A raised portion (2A) having an opening for locking (2B) is formed on the upper surface of the terminal cover (2). A locking rod (6) having a head at the top in which an opening for locking (6A) is formed is used to insert it into a U-shaped recess (2G) formed in the flexible projection (2C). The reference numeral (5) designates a locking wire which is passed into both the openings for locking (2B), (6A).
In the structure described above, when the flexible projection (2C) and the projecting pole (2D) formed on the terminal cover (2) are respectively inserted into the insertion hole ( 1 C), (1 D) formed in the casing (1) in order to fit the terminal cover (2) to the casing, the U-shaped flexible projection (2C) is inserted by a predetermined depth by utilizing flexibility of the engaging piece (2F) whereby the engaging projection (2E) is engaged with the shoulder portion (1 E) in the insertion hole.
Locking of the terminal cover is carried out as shown in Figures 6 and 7. That is, the locking rod (6) is inserted into the U-shaped recess (2G) from the surface side of the terminal cover (2) and then the locking wire (5) is passed through both the opening for locking (6A) formed in the locking rod (6) and the opening for locking (2B) of the raised portion (2A) formed on the surface of the terminal cover (2). The terminal cover (2) cannot be removed unless the locking wire (5) is removed.
When removal of the terminal cover (2) is desired, the locking wire (5) is first removed, a force is applied from the outside to deflect the engaging piece (2F) of the flexible projection (2C) of the terminal cover (2) in the direction (B) thereby disconnecting the engaging projection (2E) from the shoulder portion (1 E), and the locking rod (6) is pulled out from the U-shaped recess (2G), thus the terminal cover (2) is easily removed in a simple manner.
As described above, attaching or detaching and locking of the terminal cover is easily carried out and the shape of the terminal cover can be simplified and is economical because existing insertion holes for insertion bolts can be utilized.
Claims (5)
1. A circuit breaker having a terminal exposing on the casing which comprises a terminal cover of insulating material which has insertion holes formed near said terminal and having an inner shoulder portion, a covering portion for covering said terminal, and a substantially U-shaped flexible projection which is to be inserted into said insertion hole and which has a flexible engaging piece provided with an engaging projection for engaging with said shoulder portion.
2. A circuit breaker according to Claim 1 which comprises a raised portion formed on the upper surface of said terminal cover and a locking rod which is inserted into a U-shaped recess formed in said flexible projection, a locking wire being passed through said locking rod to connect it to said raised portion.
3. A circuit breaker according to Claim 1 or 2 wherein the top end of the engaging piece of said terminal cover is accessible from the outside to cause deformation of the piece.
4. A circuit breaker according to Claim 1 or 2 wherein said insertion hole is a hole for a fitting bolt.
5. A circuit breaker substantially as herein particularly described with reference to and as illustrated in Figures 2 to 7 of the accompany drawings.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981054797U JPH0110838Y2 (en) | 1981-04-15 | 1981-04-15 | |
| JP5479881U JPS6325644Y2 (en) | 1981-04-15 | 1981-04-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2099631A true GB2099631A (en) | 1982-12-08 |
| GB2099631B GB2099631B (en) | 1985-04-03 |
Family
ID=26395608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8206491A Expired GB2099631B (en) | 1981-04-15 | 1982-03-05 | Electric circuit breaker with a terminal cover |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB2099631B (en) |
| HK (1) | HK82585A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2579016A1 (en) * | 1985-03-18 | 1986-09-19 | Telemecanique Electrique | Breaker with electromagnetic control |
| FR2588998A1 (en) * | 1985-10-18 | 1987-04-24 | Merlin Gerin | Screw cover for a modular electrical apparatus with moulded casing |
| GB2274210A (en) * | 1993-01-11 | 1994-07-13 | Peter Balfour Dugmore | Electrical fitting or plug with casing joint, i.d.c. contact and cable clamp/stripper |
| EP0694938A1 (en) * | 1994-07-29 | 1996-01-31 | Schneider Electric Sa | Multipolar differential switch |
| DE4431281A1 (en) * | 1994-09-02 | 1996-03-07 | Teves Gmbh Alfred | Snap connection of housing parts with integrated locking pin |
| WO1998053469A1 (en) * | 1997-05-20 | 1998-11-26 | Gewiss S.P.A. | Tamper-proof plate for electrical terminals |
| WO2000022707A1 (en) * | 1998-10-09 | 2000-04-20 | Aeg Niederspannungstechnik Gmbh & Co. Kg | Lead sealable locking device |
| DE19938425A1 (en) * | 1999-08-13 | 2001-02-15 | Abb Patent Gmbh | Sealing device for cover for clamp bolt access opening(s) in electrical fitting, has sealing passage for sealing wire that can be fed through from access opening in narrow side surface |
| GB2356491A (en) * | 1999-11-10 | 2001-05-23 | Paul Michael Boggia | Improved fittings |
| EP1296340A1 (en) * | 2001-09-24 | 2003-03-26 | Rockwell Automation AG | Cover for interconnecting clamps of a multiphase switching device |
| NL2031524B1 (en) * | 2022-04-07 | 2023-11-03 | Connectens B V | CONNECTION MODULE FOR CONNECTION OF A POWER CABLE FROM AN ENERGY COMPANY AND PLUG FOR COOPERATION WITH THE CONNECTION MODULE |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017076554A (en) * | 2015-10-15 | 2017-04-20 | パナソニックＩｐマネジメント株式会社 | Protection cover, breaker, electric leakage detection device and electric leakage protection device |
-
1982
- 1982-03-05 GB GB8206491A patent/GB2099631B/en not_active Expired
-
1985
- 1985-10-24 HK HK82585A patent/HK82585A/en unknown
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2579016A1 (en) * | 1985-03-18 | 1986-09-19 | Telemecanique Electrique | Breaker with electromagnetic control |
| FR2588998A1 (en) * | 1985-10-18 | 1987-04-24 | Merlin Gerin | Screw cover for a modular electrical apparatus with moulded casing |
| GB2274210A (en) * | 1993-01-11 | 1994-07-13 | Peter Balfour Dugmore | Electrical fitting or plug with casing joint, i.d.c. contact and cable clamp/stripper |
| GB2274210B (en) * | 1993-01-11 | 1997-02-05 | Peter Balfour Dugmore | A housing for an electric plug |
| EP0694938A1 (en) * | 1994-07-29 | 1996-01-31 | Schneider Electric Sa | Multipolar differential switch |
| FR2723251A1 (en) * | 1994-07-29 | 1996-02-02 | Schneider Electric Sa | MULTIPOLAR DIFFERENTIAL CIRCUIT BREAKER |
| AU686396B2 (en) * | 1994-07-29 | 1998-02-05 | Schneider Electric Sa | Multipole differential circuit breaker |
| DE4431281A1 (en) * | 1994-09-02 | 1996-03-07 | Teves Gmbh Alfred | Snap connection of housing parts with integrated locking pin |
| WO1998053469A1 (en) * | 1997-05-20 | 1998-11-26 | Gewiss S.P.A. | Tamper-proof plate for electrical terminals |
| WO2000022707A1 (en) * | 1998-10-09 | 2000-04-20 | Aeg Niederspannungstechnik Gmbh & Co. Kg | Lead sealable locking device |
| DE19846576A1 (en) * | 1998-10-09 | 2000-04-27 | Aeg Niederspannungstech Gmbh | Locking device with lead seal e .g. for electrical load protection switch clamp terminal, has insert fitted into opening in electrical device for blocking access to protected clamp terminal |
| DE19846576C2 (en) * | 1998-10-09 | 2001-03-08 | Aeg Niederspannungstech Gmbh | Sealable sealing device |
| AU753978B2 (en) * | 1998-10-09 | 2002-10-31 | Aeg Niederspannungstechnik Gmbh & Co. Kg | Lead sealable locking device |
| DE19938425A1 (en) * | 1999-08-13 | 2001-02-15 | Abb Patent Gmbh | Sealing device for cover for clamp bolt access opening(s) in electrical fitting, has sealing passage for sealing wire that can be fed through from access opening in narrow side surface |
| DE19938425B4 (en) * | 1999-08-13 | 2008-09-04 | Abb Ag | Sealing device for a cover of at least one clamping screw access opening of an electrical installation device |
| GB2356491A (en) * | 1999-11-10 | 2001-05-23 | Paul Michael Boggia | Improved fittings |
| EP1296340A1 (en) * | 2001-09-24 | 2003-03-26 | Rockwell Automation AG | Cover for interconnecting clamps of a multiphase switching device |
| NL2031524B1 (en) * | 2022-04-07 | 2023-11-03 | Connectens B V | CONNECTION MODULE FOR CONNECTION OF A POWER CABLE FROM AN ENERGY COMPANY AND PLUG FOR COOPERATION WITH THE CONNECTION MODULE |
Also Published As
| Publication number | Publication date |
|---|---|
| HK82585A (en) | 1985-11-01 |
| GB2099631B (en) | 1985-04-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19950305 |