EP1151447A1 - Kontaktfeder-einheit für einen elektrischen schalter - Google Patents
Kontaktfeder-einheit für einen elektrischen schalterInfo
- Publication number
- EP1151447A1 EP1151447A1 EP00914332A EP00914332A EP1151447A1 EP 1151447 A1 EP1151447 A1 EP 1151447A1 EP 00914332 A EP00914332 A EP 00914332A EP 00914332 A EP00914332 A EP 00914332A EP 1151447 A1 EP1151447 A1 EP 1151447A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact
- spring unit
- actuating cam
- unit according
- contact spring
- 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
- 210000002105 tongue Anatomy 0.000 claims abstract description 20
- 238000007373 indentation Methods 0.000 claims description 5
- 238000001746 injection moulding Methods 0.000 claims description 5
- 230000013011 mating Effects 0.000 claims description 5
- 239000002184 metal Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 11
- 238000005452 bending Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003993 interaction Effects 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
- H01H1/26—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting with spring blade support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
- H01H19/54—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand the operating part having at least five or an unspecified number of operative positions
- H01H19/60—Angularly-movable actuating part carrying no contacts
- H01H19/62—Contacts actuated by radial cams
Definitions
- the invention relates to a contact spring unit for an electrical switch with a metallic contact plate, the contact tongues of which is assigned at least one contact arm designed as a leaf spring and fixed at one end with a contact and an actuating cam, and an actuating element acting on the actuating cam with at least one switching knob .
- switch contact elements are used to implement various electrical switching functions, in particular in the case of switches in a motor vehicle. These are generally of relatively simple design in order to minimize the production costs.
- a switch contact element essentially consists of a contact board, which is partially embedded in a base, the base being fastened to the assigned switch.
- One or more contact arms which cooperate with at least one further contact tongue of the contact board, are fixed on contact tongues of the contact board.
- the contact arm is subjected to a bending process to form a V-shaped actuating cam before assembly.
- the V-shaped actuating cam increases the stability of the contact arm designed as a leaf spring and is operatively connected to a switching knob of an actuating element acting on the contact arm.
- the dimensionally accurate shaping of the actuating cam and the associated dimensionally accurate manufacture of the contact arm often causes problems due to the mechanical deformation.
- the object of the invention to provide a contact spring unit of the type mentioned, whose contact is with an associated actuating cam easy and inexpensive to manufacture and is subject endings no storage-related risk of BeC ⁇ .
- the object is achieved in that the actuating cam is arranged as a separate component on the flat contact arm.
- the contact arm which is manufactured as a flat stamped part, offers no possibility of interlocking with other contact arms during storage, as a result of which bending and other manufacturing-related damage are almost impossible. Furthermore, the Manufacture contact arm using relatively simple stamping tools, which is why its manufacturing costs are relatively low. The separately manufactured actuating cam is also not subject to the risk of production-related damage and is simple and inexpensive to manufacture.
- the actuating cam of the contact arm is preferably made of a plastic with suitable sliding properties. This results in inexpensive mass production of the actuating cam.
- the sliding properties of the plastic ensure a reliable interaction of the actuating cam with the switching knobs of the actuating element.
- the actuating cam is expediently formed on the contact arm by the injection molding process.
- the actuating cam is T-shaped.
- the foot of the T-shaped actuating cam preferably engages over the contact arm.
- the actuating cam and a base of the contact spring unit are molded together in a multi-component injection molding process. This measure eliminates the unnecessary handling and assembly of the individual parts during manufacture, and the multi-component injection molding process enables the base to be molded using a material that meets the stability criteria and the actuating cam is molded using a material with the required sliding properties.
- the switching knob of the actuating element preferably has an indentation for receiving the free end of the web of the actuating cam.
- the fixed end of the contact arm is advantageously U-shaped, one leg being attached to the associated contact tongue and the other leg being the contact arm.
- a contact of the contact tongue is expediently associated with the contact of the contact arm.
- the total height of the contact of the contact arm and of the mating contact of the contact tongue is preferably larger than the clear width of the U-shaped end of the contact arm. This ensures reliable contacting with simultaneous pretensioning of the Given poor contact.
- the contact board is a lead frame.
- FIG. 1 shows a perspective illustration of a contact spring unit according to the invention with an actuating element
- FIG. 2 shows the top view of a representation according to FIG. 1,
- FIG. 3 is a view of the detail III of the illustration of FIG. 2 from below,
- FIG. 4 shows a view of detail III of the representation according to FIG. 2 from above and
- the electrical switch comprises an actuating element 3 which is rotatably mounted in an outer housing 1 and an inner housing 2, the inner housing 2 being connected to the housing 4 of a contact spring unit 5.
- the outer housing 1 and the inner housing 2 are connected to one another via a bayonet catch 6. Furthermore, two opposite, differently shaped lugs 7 are formed on the outer housing 1 for locking in a holding plate, not shown.
- the actuating element 3 is provided with circumferential switching knobs 8 for acting on a contact arm 9 of the contact spring unit 5 which is designed as a leaf spring.
- Each switching knob 8 has an indentation 10 which ends in radii 11 in the directions of rotation of the actuating element 3.
- the indentation 10 of the switching knob 8 serves to receive the free end of an actuating cam 12 arranged on the contact arm 9.
- the actuating cam 12 made of plastic is T-shaped, the foot 13 of the actuating cam 12 engaging over the contact arm 9 and thus fixing the actuating cam 12.
- the web 14 of the actuating cam 12 is provided with a radius 15 at its free end and points in the direction of the switching knob 8 of the actuating element 3.
- the radius 15 of the web 14 of the actuating cam 12 corresponds to the indentation 10 of the actuating element 3.
- the contact arm 9 is fixed with an end 16, which is U-shaped ⁇ , on a contact tongue 17.
- one leg 18 is connected to the contact cables 17.
- the other end 19 of the contact arm 9 carries a contact 20 which acts on a mating contact 21 of a contact tongue 22.
- the total height of the contact 20 of the contact arm 9 and the mating contact 21 of the contact tongue 22 is larger than the clear width of the U-shaped end 16.
- the contact tongues 17, 22 are part of a contact plate 23 designed as a lead frame, which is provided with connecting contacts 24.
- the contact board is embedded in a base 25 of the housing 4 of the contact spring unit 5. To attach the base 25 to the housing 4, this has clip lugs 26 and holding elements 27 which cooperate with corresponding openings in the housing 4.
- the connection contacts 24 point into an area outside the base 25, which is surrounded by a collar 28 formed on the housing 4.
- the collar 28 is designed as a plug-in coding.
- the contact 20 of the contact arm 9 is pretensioned on the counter-contact 21 of the contact tongue 22 and closes a current path between the associated contact tongues 17, 22.
- the switching knobs 8 begin by a rotary movement of the actuating element 3 the actuating cam 12 of the contact arm 9 to act.
- the radius 15 of the web 14 slides the actuating cam 12 under the resilient action of the U-shaped end 16 of the contact arm 9 of the recess' 10 of the switching nub until it lies on the radius 11 along the recess 8 in the 10th In this Stel ⁇ lung, the contact of the contact arm 9 in a maximum distance is on the mating contact 20 of the contact tongue 22.
Landscapes
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
- Tumbler Switches (AREA)
- Push-Button Switches (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19905288A DE19905288A1 (de) | 1999-02-06 | 1999-02-06 | Kontaktfeder-Einheit für einen elektrischen Schalter |
| DE19905288 | 1999-02-06 | ||
| PCT/IB2000/000458 WO2000046821A1 (de) | 1999-02-06 | 2000-02-02 | Kontaktfeder-einheit für einen elektrischen schalter |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1151447A1 true EP1151447A1 (de) | 2001-11-07 |
| EP1151447B1 EP1151447B1 (de) | 2002-12-04 |
| EP1151447B2 EP1151447B2 (de) | 2008-07-16 |
Family
ID=7896911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00914332A Expired - Lifetime EP1151447B2 (de) | 1999-02-06 | 2000-02-02 | Kontaktfeder-einheit für einen elektrischen schalter |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1151447B2 (de) |
| DE (2) | DE19905288A1 (de) |
| ES (1) | ES2187455T5 (de) |
| WO (1) | WO2000046821A1 (de) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1507278A (fr) * | 1966-11-14 | 1967-12-29 | Crouzet Sa | Perfectionnements aux programmateurs à cames |
| US3415962A (en) † | 1966-12-09 | 1968-12-10 | Cutler Hammer Inc | Miniature precision snap action switch with one-piece stressed blade construction |
| GB1251902A (de) * | 1969-05-23 | 1971-11-03 | ||
| US3719788A (en) * | 1971-02-04 | 1973-03-06 | Tektronix Inc | Switch having ganged contacts mounted on opposite sides of circuit board |
| DE2625715B2 (de) † | 1976-06-09 | 1979-01-18 | E.G.O. Elektro-Geraete Blanc U. Fischer, 7519 Oberderdingen | Leistungssteuergerät |
| DE3223479A1 (de) † | 1982-06-23 | 1983-12-29 | Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart | Thermostat-schnappfederschalter, insbesondere fuer temperaturregler in backoefen |
| FR2556495B3 (fr) * | 1983-12-07 | 1985-11-22 | Turatti Mario | Commutateur d'allumage et de demarrage a contacts frontaux pour vehicules automobiles |
| DE4435303A1 (de) † | 1994-10-01 | 1996-04-04 | Ego Italiana | Schnappschalter, insbesondere für Temperaturschalter |
| IT1281101B1 (it) † | 1995-12-22 | 1998-02-11 | Itw Fastex Italia Spa | Procedimento di costruzione di un commutatore elettrico di alimentazione, particolarmente per elettrodomestici e simili |
-
1999
- 1999-02-06 DE DE19905288A patent/DE19905288A1/de not_active Withdrawn
-
2000
- 2000-02-02 DE DE50000863T patent/DE50000863D1/de not_active Expired - Lifetime
- 2000-02-02 EP EP00914332A patent/EP1151447B2/de not_active Expired - Lifetime
- 2000-02-02 WO PCT/IB2000/000458 patent/WO2000046821A1/de not_active Ceased
- 2000-02-02 ES ES00914332T patent/ES2187455T5/es not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0046821A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19905288A1 (de) | 2000-08-10 |
| DE50000863D1 (de) | 2003-01-16 |
| EP1151447B2 (de) | 2008-07-16 |
| ES2187455T5 (es) | 2008-12-16 |
| EP1151447B1 (de) | 2002-12-04 |
| ES2187455T3 (es) | 2003-06-16 |
| WO2000046821A1 (de) | 2000-08-10 |
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