EP1430495A2 - Elektromechanischer schalter - Google Patents
Elektromechanischer schalterInfo
- Publication number
- EP1430495A2 EP1430495A2 EP01969113A EP01969113A EP1430495A2 EP 1430495 A2 EP1430495 A2 EP 1430495A2 EP 01969113 A EP01969113 A EP 01969113A EP 01969113 A EP01969113 A EP 01969113A EP 1430495 A2 EP1430495 A2 EP 1430495A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- switching part
- switch
- contact surfaces
- switch according
- membrane
- 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
- 239000012528 membrane Substances 0.000 claims abstract description 23
- 239000002184 metal Substances 0.000 claims description 2
- 229920001169 thermoplastic Polymers 0.000 claims description 2
- 239000004416 thermosoftening plastic Substances 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims 2
- 239000013536 elastomeric material Substances 0.000 claims 1
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 239000002991 molded plastic Substances 0.000 claims 1
- 238000011109 contamination Methods 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 239000012811 non-conductive material Substances 0.000 description 2
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 210000002105 tongue Anatomy 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H23/00—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button
- H01H23/02—Details
- H01H23/04—Cases; Covers
- H01H23/06—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings
-
- 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
- H01H9/04—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings
- H01H2009/048—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings using a sealing boot, e.g. the casing having separate elastic body surrounding the operating member and hermetically closing the opening for it
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H23/00—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button
- H01H23/02—Details
- H01H23/12—Movable parts; Contacts mounted thereon
- H01H23/14—Tumblers
- H01H23/146—Tumblers having a generally tubular or conical elongated shape, e.g. dolly
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
- H01H2300/004—Application hearing aid
Definitions
- the present invention relates to an electromechanical switch according to the preamble of claim 1.
- the switching part is conventionally displaced by means of a switching lever, which is likewise mounted in the housing of the switch and is movably or permanently connected to the switching part.
- the shift lever itself is usually made of an electrically non-conductive material, or is at least reliably electrically isolated from the switching part and the contact surfaces.
- additional sealing means can be attached, which are conventionally arranged at least around the shift lifters and are sealingly connected to the housing.
- the elastic membrane generates this contact pressure preferably through its pre-tension set between the switch housing and the switching part. This is achieved, for example, by pulling the membrane over the preferably pin-shaped switching part and, under slight tension, in accordance with the required contact pressure, connecting it around the contact surfaces to the corresponding housing part of the switch.
- FIG. 1 shows the longitudinal section through a switch according to the invention.
- Figure 2 is the bottom view of the switch of Figure 1;
- FIG. 3 shows the longitudinal section through the switch according to FIG. 1 offset by 90 °
- FIG. 4 shows the view of the membrane of the switch according to FIG.
- FIG. 7 shows a longitudinal section through the switching area of a further variant of the switch according to FIG. 1 with 4 contact surfaces.
- FIG. 1 shows a longitudinal section through a switch designed according to the invention, in which the pin-shaped switching part 1 is in contact with two adjacent contact surfaces 2 of three contact pins 3 arranged parallel to one another.
- the contact pins 3 are introduced here side by side in the lower housing part 4 and protrude outwards to create an electrical connection with electrical lines (not shown).
- the switching part 1 is hemispherical on its contact side 1 'and thus snaps into place position shown between the two right contact surfaces 2 in a stable position.
- the switching part 1 is pulled against the contact surfaces 2 by the elastic force of the membrane 5 and thus elastically fixed in this position.
- the membrane 5 is made of an electrically non-conductive material, preferably a thermoplastic, the outside of the membrane 5 can serve directly as an actuating surface in the region of the free end of the switching part 1. This eliminates the need to provide a separate actuating element in addition to the switching part 1.
- notches 7 can advantageously be provided either on the outside or on the inside of the membrane, as is shown in the view of the membrane in FIG. Depending on the dimensions and number, these reduce the elastic restoring force of the membrane 5 and thus allow a certain adjustment of the actuating force of the switch.
- the notches 7 can either be arranged longitudinally or else transversely, in accordance with the desired effect on the elastic force effect.
- the lateral limitation of the range of motion of the switching part 1 forms the edge of the recess 6 'of the upper housing part 6.
- the switching part 1 can only be shifted from the switching position shown in FIG. 1 to the opposite switching position and back. This creates a stable, electrically conductive connection between the middle contact pin 3 with the corresponding left resp. right outer contact pin 3 made.
- the contact area between the switching part 1 and the contact surfaces 2 is thus hermetically sealed by the membrane 5 from the surroundings of the switch and thus protected from dirt and moisture.
- the membrane 5 leads around the contact surfaces 2 and at the same time also serves as a seal between the lower housing part 4 and the upper housing part 6.
- the membrane 5 is advantageously firmly connected to the outer housing part 6 as shown. This can be done directly in the manufacturing process or by inserting it into this position, for example.
- the lower housing part 4 as shown in the bottom view in Figure 2, can also be used
- Contact pins 3 are inserted from below into the upper housing part 6, which is already equipped with the membrane 5 and the switching part 1, and fixed thereon.
- the fixation can be done either in a non-detachable manner by gluing or welding in a conventional manner, or more simply using appropriately trained connecting straps resp. - tongues are made by latching. In any case, a reliable sealing of the contact area inside the switch is advantageously achieved.
- FIG. 3 again shows a longitudinal section through the switch according to FIG. 1 in a position rotated by 90 °.
- the three contact pins 3 are arranged in a line one behind the other in the lower one Housing part 4 are positioned.
- the switching part 1 is preferably in the form of a pin, preferably a metal pin, with a round cross section, the outer surface of which is formed by the membrane 5. This is a simple and pleasant to touch resp. operable switching element of the switch created.
- the contact surfaces 2 are always shown in the form of a semicircle, but can also have other shapes such as a mushroom shape or a hook shape.
- mushroom-shaped contact surfaces 2 is conceivable, which in turn are resiliently arranged in relation to the lower housing part 4, as is shown schematically in FIGS. 5 and 6.
- FIG. 7 shows the middle switch position in which the two middle contact surfaces 2 are electrically connected to one another via the switching part 1.
- a great advantage of the illustrated embodiment can be seen in addition to the tightness in that even over conventional switches, the number of parts could be reduced because the membrane as a handle or. Actuator, seal and spring element is used to apply the contact force.
- the structure shown also allows a high degree of miniaturization, so that the switch is particularly suitable for use in small or miniaturized electronic devices are particularly suitable for hearing aids. Such devices in particular are exposed to a very dirty and damp environment.
Landscapes
- Push-Button Switches (AREA)
- Switch Cases, Indication, And Locking (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CH2001/000584 WO2002005387A2 (de) | 2001-09-27 | 2001-09-27 | Elektromechanischer schalter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1430495A2 true EP1430495A2 (de) | 2004-06-23 |
| EP1430495B1 EP1430495B1 (de) | 2011-11-16 |
Family
ID=32181933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01969113A Expired - Lifetime EP1430495B1 (de) | 2001-09-27 | 2001-09-27 | Elektromechanischer schalter |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1430495B1 (de) |
| CA (1) | CA2456878C (de) |
| DK (1) | DK1430495T3 (de) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3728509A (en) * | 1970-09-26 | 1973-04-17 | Alps Electric Co Ltd | Push-button switch with resilient conductive contact member with downwardly projecting ridges |
| EP0123184B1 (de) * | 1983-04-20 | 1990-03-14 | Bebié+Co. | Tastaturanordnung |
-
2001
- 2001-09-27 CA CA2456878A patent/CA2456878C/en not_active Expired - Fee Related
- 2001-09-27 DK DK01969113.8T patent/DK1430495T3/da active
- 2001-09-27 EP EP01969113A patent/EP1430495B1/de not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0205387A3 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DK1430495T3 (da) | 2012-03-05 |
| CA2456878A1 (en) | 2002-01-17 |
| CA2456878C (en) | 2011-03-01 |
| EP1430495B1 (de) | 2011-11-16 |
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