EP0398036B1 - Transformer - Google Patents
Transformer Download PDFInfo
- Publication number
- EP0398036B1 EP0398036B1 EP19900107405 EP90107405A EP0398036B1 EP 0398036 B1 EP0398036 B1 EP 0398036B1 EP 19900107405 EP19900107405 EP 19900107405 EP 90107405 A EP90107405 A EP 90107405A EP 0398036 B1 EP0398036 B1 EP 0398036B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- transformer
- guide
- casing
- channel
- feet
- 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
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
- H01F27/022—Encapsulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F5/00—Coils
- H01F5/04—Arrangements of electric connections to coils, e.g. leads
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F5/00—Coils
- H01F5/04—Arrangements of electric connections to coils, e.g. leads
- H01F2005/046—Details of formers and pin terminals related to mounting on printed circuits
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
- H01F2027/065—Mounting on printed circuit boards
Definitions
- the invention relates to a transformer or autotransformer having a high-level electrical insulation, of comparatively simplified construction.
- a transformer comprising a casing provided with apertured feet, in which said feet protrude from the bottom of said transformer, so as to define therewith a portal-like structure, at least one pair of said feet being provided on their inner sides with recesses, cooperating with one edge of a mounting channel-like structure having an "omega" or other profile, the bottom of the transformer being further provided at an intermediate position with transversal guide having mounted thereon a spring-operated latch co-operating with the opposite of said channel, so as to firmly lock the transformer, said guide having an inverted T profile and the latch which is slidably mounted on said guide has a corresponding C profile and is provided with an extension fitting in a longitudinal recess of said guide; a longitudinal slit for the introduction of a spring; and rear end-of-stroke stop.
- a transformer is known of the type comprising an electrical insulating casing made of plastics material provided with slotted feet for securing the transformer in place.
- a transformer is provided, of the type comprising an integral casing (5) of plastic material, the transformer being provided at its base, preferably at the corner regions of the core (4), with feet (6) protruding from the bottom of the casing, said feet having apertures for securing the transformer in place, at least one pair of said feet being provided co-planary with the bottom of the casing with recesses (8) cooperating with a first edge of a channel-like structure (9) having an "omega" or similar profile, a guide (10) being formed integrally at the bottom of the casing, the guide being transversally oriented with respect to the large surface of the transformer core and at an intermediate position with respect to the feet, said guide having in cross section a substantially inverted T-shaped profile and having a longitudinal recess (11), a spring operated latch (12) with a substantially C-shaped profile being slidably mounted on the guide and cooperating with the second edge of the channel-like structure for fixing the transformer on said channel-like structure, the latch being provided with
- the transformer according to the invention comprises an insulating casing 5 made of plastics material having antifire characteristics, good electrical insulation features and good characteristics of resistance to chemical-physical stresses which encloses also the transformer bobin and which has the following functions:
- the feet 6 protrude for an equal extent from the bottom of the transformer so as to define therewith a portal-like profile (Figure 4).
- the feet which are located at one side of the transformer are provided - in the inner side thereof and co-planarly with the bottom of the casing 5 - with respective recesses 8 which permit the transformer to be overhangingly mounted on a DIN guide channel 9 having an "omega" profile ( Figure 3), of the type which is used commonly with electrical switchboards for supporting terminal blocks, remote-control switches and other components.
- the recesses 8 co-operate with the upper edge of the channel 9, whereby the transformer is substantially suspended from said edge.
- a latch device arranged intermediately of the bottom of the casing 5 and co-operating with the lower side of said channel.
- a guide 10 with a substantially inverted "T"-shaped profile, having a longitudinal recess 11 is formed integrally at the bottom of the transformer at an intermediate position and with a transverse orientation.
- Said guide mounts a latch device 12 of substantially C-shaped profile, provided with an extension 112 which fits into said recess 11 of said guide and which will be acted upon by an opposing spring 13 which may be introduced into said recess 11 through a window 14 provided longitudinally in said latch device, the latter being also provided with:
- the guide 10 is tapered at the initial part thereof, as indicated at 16 in Figure 2, to permit the extension 112 of the latch to enter perpendicularly the recess 11 in said guide.
- the housings 7-107 comprise small substantially parallelepipedal boxes B-B1, opened at one end whereinto a respective, preferably metallic slider 17 is inserted to embrace the tongue 3 or 103, said slider having in the top thereof a threaded hole co-operating with a screw 18 having a head 118 with a slot for a screwdriver, which rotatably engages, without protruding therefrom, a through-hole 19 in the top of each box B-B1, said head being provided with a collar 218 abutting against said top wall of the boxes.
- the screw 18, moreover, is of such a length as to engage, at its lower end, the tongue 3 or 103.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Or Transformers For Communication (AREA)
- Housings And Mounting Of Transformers (AREA)
- Coils Of Transformers For General Uses (AREA)
Description
- The invention relates to a transformer or autotransformer having a high-level electrical insulation, of comparatively simplified construction.
- From US-A-4 671 697 a transformer is known comprising a casing provided with apertured feet, in which said feet protrude from the bottom of said transformer, so as to define therewith a portal-like structure, at least one pair of said feet being provided on their inner sides with recesses, cooperating with one edge of a mounting channel-like structure having an "omega" or other profile, the bottom of the transformer being further provided at an intermediate position with transversal guide having mounted thereon a spring-operated latch co-operating with the opposite of said channel, so as to firmly lock the transformer, said guide having an inverted T profile and the latch which is slidably mounted on said guide has a corresponding C profile and is provided with an extension fitting in a longitudinal recess of said guide; a longitudinal slit for the introduction of a spring; and rear end-of-stroke stop.
- From GB-A-0 872 883 a transformer is known of the type comprising an electrical insulating casing made of plastics material provided with slotted feet for securing the transformer in place.
- According to the present invention a transformer is provided, of the type comprising an integral casing (5) of plastic material, the transformer being provided at its base, preferably at the corner regions of the core (4), with feet (6) protruding from the bottom of the casing, said feet having apertures for securing the transformer in place, at least one pair of said feet being provided co-planary with the bottom of the casing with recesses (8) cooperating with a first edge of a channel-like structure (9) having an "omega" or similar profile, a guide (10) being formed integrally at the bottom of the casing, the guide being transversally oriented with respect to the large surface of the transformer core and at an intermediate position with respect to the feet, said guide having in cross section a substantially inverted T-shaped profile and having a longitudinal recess (11), a spring operated latch (12) with a substantially C-shaped profile being slidably mounted on the guide and cooperating with the second edge of the channel-like structure for fixing the transformer on said channel-like structure, the latch being provided with a stop (212) cooperating with a protruding edge of the guide oriented transversally with respect to the longitudinal recess, with an extension (112) fitting in the longitudinal recess of the guide, and with a longitudinal slit (14) for the introduction of a spring (13), the transformer being characterized by the fact that its casing is acoustical insulating and comprises cooling fins (105), and that the said latch is further provided, at its side cooperating with the channel-like structure, with one or more teeth (412) having an inclined side for self-adaptation to the thickness of the second edge of the mounting channel.
- Further characteristics of the transformer according to the invention and the advantages resulting therefrom will become apparent from the following description, made with reference to the Figures of the accompanying two sheets of drawings, wherein:
- Figure 1 is a perspective view of the transformer;
- Figure 2 is a bottom plan view of the transformer;
- Figure 3 shows the lower portion of the transformer, as seen from the section line IV-IV of Figure 3;
- Figure 4 is a side elevational and partly sectional view of the transformer, as seen from the line V-V of Figure 1;
- As shown in the drawings, the transformer according to the invention comprises an
insulating casing 5 made of plastics material having antifire characteristics, good electrical insulation features and good characteristics of resistance to chemical-physical stresses which encloses also the transformer bobin and which has the following functions: - it improves the electrical insulation of the transformer up to levels never found in transformers of conventional type;
- it increases the heat-exchange surface which is licked by the ambient air, by providing said casing with suitable fins of the type indicated, for example, at 105 in Figures 3 to 5;
- it forms at the base of the transformer, preferably at the corner regions of one of the larger sides of the
yoke 4, apertured or channelled feet 6 (Figure 1) to be used for securing the transformer in place by means of screws or a mounting guide; - it defines around the
tongues 3, respective sets of housings 7-107 to be used for the formation of terminal blocks. - From Figures 1, 2 and 4 it will be noted that the
feet 6 protrude for an equal extent from the bottom of the transformer so as to define therewith a portal-like profile (Figure 4). The feet which are located at one side of the transformer are provided - in the inner side thereof and co-planarly with the bottom of the casing 5 - withrespective recesses 8 which permit the transformer to be overhangingly mounted on aDIN guide channel 9 having an "omega" profile (Figure 3), of the type which is used commonly with electrical switchboards for supporting terminal blocks, remote-control switches and other components. Therecesses 8 co-operate with the upper edge of thechannel 9, whereby the transformer is substantially suspended from said edge. The positioning of the transformer on thechannel 9 is, however, stabilized by a latch device arranged intermediately of the bottom of thecasing 5 and co-operating with the lower side of said channel. During the formation of thecasing 5, in fact, aguide 10 with a substantially inverted "T"-shaped profile, having alongitudinal recess 11, is formed integrally at the bottom of the transformer at an intermediate position and with a transverse orientation. Said guide mounts a latch device 12 of substantially C-shaped profile, provided with anextension 112 which fits into saidrecess 11 of said guide and which will be acted upon by an opposing spring 13 which may be introduced into saidrecess 11 through awindow 14 provided longitudinally in said latch device, the latter being also provided with: - a
rear stop 212 co-operating with the outer end of theguide 10 at the end of its stroke; - an
external extension 312 with aslot 15 for insertion of a screw-driver or other means to operate the latch in contrast against the action of the respective spring 13; - one or more
front teeth 412, preferably with an inclined front side, adapted to pinch the lower edge of thechannel 9 and capable of self-adaptation to the thickness of said edge. - The
guide 10 is tapered at the initial part thereof, as indicated at 16 in Figure 2, to permit theextension 112 of the latch to enter perpendicularly therecess 11 in said guide. - The advantages of the two different possibilities of mounting the transformer are apparent and result from the presence of the slotted or apertured
feet 6 and from the characteristics described above with reference to Figure 3. - With reference to Figures 1 and 4, it will be noted that the housings 7-107 comprise small substantially parallelepipedal boxes B-B1, opened at one end whereinto a respective, preferably metallic slider 17 is inserted to embrace the
tongue screw 18 having ahead 118 with a slot for a screwdriver, which rotatably engages, without protruding therefrom, a through-hole 19 in the top of each box B-B1, said head being provided with acollar 218 abutting against said top wall of the boxes. Thescrew 18, moreover, is of such a length as to engage, at its lower end, thetongue screw 18 by means of a screwdriver inserted into thehole 19, said screw causes the slider 17 to be lifted or lowered. The wire to be electrically connected to thetongue
Claims (1)
- A transformer comprising an integral casing (5) of plastic material, the transformer being provided at its base, preferably at the corner regions of the core (4), with feet (6) protruding from the bottom of the casing, said feet having apertures for securing the transformer in place, at least one pair of said feet being provided co-planary with the bottom of the casing with recesses (8) cooperating with a first edge of a channel-like structure (9) having an "omega" or similar profile, a guide (10) being formed integrally at the bottom of the casing, the guide being transversally oriented with respect to the large surface of the transformer core and at an intermediate position with respect to the feet, said guide having in cross section a substantially inverted T-shaped profile and having a longitudinal recess (11), a spring operated latch (12) with a substantially C-shaped profile being slidably mounted on the guide and cooperating with the second edge of the channel-like structure for fixing the transformer on said channel-like structure, the latch being provided with a stop (212) cooperating with a protruding edge of the guide oriented transversally with respect to the longitudinal recess, with an extension (112) fitting in the longitudinal recess of the guide, and with a longitudinal slit (14) for the introduction of a spring (13), the transformer being characterized by the fact that its casing is acoustical insulating and comprises cooling fins (105), and that the said latch is further provided, at its side cooperating with the channel-like structure, with one or more teeth (412) having an inclined side for self-adaptation to the thickness of the second edge of the mounting channel.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT1514089 | 1989-05-18 | ||
IT1514089 | 1989-05-18 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0398036A2 EP0398036A2 (en) | 1990-11-22 |
EP0398036A3 EP0398036A3 (en) | 1991-09-11 |
EP0398036B1 true EP0398036B1 (en) | 1995-02-01 |
Family
ID=11146656
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19900107405 Expired - Lifetime EP0398036B1 (en) | 1989-05-18 | 1990-04-19 | Transformer |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0398036B1 (en) |
DE (1) | DE69016495D1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT412683B (en) * | 2002-10-15 | 2005-05-25 | Siemens Ag Oesterreich | TRANSFORMER |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB872883A (en) * | 1959-05-09 | 1961-07-12 | Philips Electrical Ind Ltd | Improvements in or relating to electric transformers |
US3467929A (en) * | 1968-09-18 | 1969-09-16 | Gen Electric | Dry type transformer and improved enclosure assembly therefor |
DE7120221U (en) * | 1971-05-25 | 1971-08-19 | Siemens Ag | PLASTIC-COVERED SMALL TRANSFORMER |
DE2810071C3 (en) * | 1978-03-08 | 1981-04-09 | Siemens AG, 1000 Berlin und 8000 München | Arrangement for fastening and wiring electrical devices |
US4671697A (en) * | 1984-05-09 | 1987-06-09 | Mitsubishi Denki Kabushiki Kaisha | Apparatus for mounting electrical appliance on frame |
DE3444564A1 (en) * | 1984-12-06 | 1986-06-12 | Klaus 8600 Bamberg Bruchmann | Switch securing unit |
-
1990
- 1990-04-19 EP EP19900107405 patent/EP0398036B1/en not_active Expired - Lifetime
- 1990-04-19 DE DE69016495T patent/DE69016495D1/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT412683B (en) * | 2002-10-15 | 2005-05-25 | Siemens Ag Oesterreich | TRANSFORMER |
Also Published As
Publication number | Publication date |
---|---|
EP0398036A3 (en) | 1991-09-11 |
DE69016495D1 (en) | 1995-03-16 |
EP0398036A2 (en) | 1990-11-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4603376A (en) | Terminal assembly for circuit breaker and similar apparatus | |
US6155890A (en) | Spring loaded clamping connection for electrical conductors | |
JPH08287982A (en) | Terminal device for electric device | |
US3398249A (en) | Molded case circuit breaker and mounting means therefor | |
IE51215B1 (en) | Self-clamping electrical connectors and terminal blocks | |
US4335271A (en) | Electrical box | |
US5401185A (en) | Edge connector | |
EP0398036B1 (en) | Transformer | |
EP0914663B1 (en) | Electrical terminal with finger-proof protection | |
US5227757A (en) | Terminal device | |
JPH1067246A (en) | Structure of shift knob with switch | |
US3742410A (en) | Adaptor for mounting conventional through type current transformers on flat spade terminals | |
JPH0526792Y2 (en) | ||
JP3906568B2 (en) | Magnetic contactor | |
US20050020145A1 (en) | Contact element terminal with a contact element and method for contacting a conductor with a contact element | |
US4945329A (en) | Tripping device with burning prevention switch | |
KR200247037Y1 (en) | structure to prevent coil terminal swaying in magnetic contactor | |
JPS6242438Y2 (en) | ||
CA1278007C (en) | Terminal assembly for circuit breaker and similar apparatus | |
JPS6224946Y2 (en) | ||
JPS628127Y2 (en) | ||
JPH0132693Y2 (en) | ||
KR880001001Y1 (en) | Fized device of a antenna terminal strip and feed wire | |
KR200238326Y1 (en) | Coil Terminal Structure Assembly | |
JP2002184293A (en) | Terminal device of circuit breaker |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): DE ES FR GB |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
17P | Request for examination filed |
Effective date: 19910617 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): DE ES FR GB |
|
17Q | First examination report despatched |
Effective date: 19920806 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: BERTOLDO & C. S.R.L. |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE ES FR GB |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY Effective date: 19950201 |
|
REF | Corresponds to: |
Ref document number: 69016495 Country of ref document: DE Date of ref document: 19950316 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Effective date: 19950503 |
|
ET | Fr: translation filed | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20070410 Year of fee payment: 18 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20070308 Year of fee payment: 18 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20080419 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20081231 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20080430 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20080419 |