EP0818048A1 - Elektrischer tastschalter - Google Patents
Elektrischer tastschalterInfo
- Publication number
- EP0818048A1 EP0818048A1 EP96908016A EP96908016A EP0818048A1 EP 0818048 A1 EP0818048 A1 EP 0818048A1 EP 96908016 A EP96908016 A EP 96908016A EP 96908016 A EP96908016 A EP 96908016A EP 0818048 A1 EP0818048 A1 EP 0818048A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- key
- housing
- electrical
- steering wheel
- actuating
- 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
- 210000003811 finger Anatomy 0.000 claims description 17
- 239000011324 bead Substances 0.000 claims description 13
- 210000003813 thumb Anatomy 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 210000004247 hand Anatomy 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
- H01H21/02—Details
- H01H21/18—Movable parts; Contacts mounted thereon
- H01H21/22—Operating parts, e.g. handle
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2231/00—Applications
- H01H2231/026—Car
Definitions
- the invention relates to an electrical pushbutton switch with a housing accommodating switching elements and at least one automatically resetting and off-center button with a switching finger acting on the switching elements.
- Such an electrical pushbutton switch is known from DE 71 38 974 U1.
- a button is recessed in a housing.
- the key is stored via an eccentric axis of rotation which extends through the side walls of the key and the housing.
- the gap is required to enable smooth shifting.
- the button is pressed, the columns parallel to the axis of rotation also change their size. Dirt and foreign bodies can very easily get into the pushbutton switch through the gap.
- the flat design of the key only allows the key to be operated from one direction only. This negative effect is exacerbated by the fact that the key is embedded deep in the housing.
- the housing of the push button switch is complex and expensive since the parts lying in the housing are inconvenient to insert. Furthermore, the key does not offer a clear target for an actuating force. The actuating force must be introduced perpendicular to the housing so that the switching takes place clearly. In this respect, there are clear limits for the positioning of such a pushbutton switch. Due to its design, it does not offer the possibility of more universal use and the comfort of a different operation that achieves the same result.
- the invention has for its object to provide an electrical pushbutton switch of the type mentioned, which enables a high level of operating convenience with a simple structure and inexpensive manufacture.
- the key has an actuating bead provided with two opposing actuating surfaces which is aligned approximately axially parallel to the key bearing, the actuating force introduced on the side of the key bearing approximately parallel to the housing having the same direction of action on the key has, like the actuation force introduced on the opposite side approximately perpendicular to the housing.
- the pushbutton switch is fastened in the area of a steering wheel of a motor vehicle in such a way that a hand gripping the steering wheel of the steering wheel can act with one thumb on one actuating surface and with the other fingers on the other actuating surface of the button. Since the hand grips the steering wheel of the steering wheel, it can be supported. The correct dosing of the required actuating force is therefore very easily possible. Analogously to the possibilities of the natural movement of the fingers or the thumb, the actuating force is introduced, the handle around the steering ring not having to be released when the pushbutton switch is actuated. Rather, the steering ring is more closely enclosed by the finger or thumb that performs the actuation.
- the pushbutton switch is assigned to the steering wheel in such a way that the actuating bead behind the steering wheel runs approximately parallel and set back to the steering wheel .
- the housing is firmly connected to the steering wheel, the actuating surfaces of the button protruding through an aperture in the steering wheel bowl surrounding the steering wheel hub and no steering wheel spokes being provided in the area of the button. This always ensures that fingers and thumbs are opposite each other in relation to the control surfaces. If the steering wheel guided by the hands turns, the button is turned at the same angle. Even in critical situations, the button can be pressed without detaching the hand from the steering wheel. A clear view of the key is ensured.
- the button is therefore expediently located between two steering wheel spokes of the steering wheel.
- the actuating surface of the key facing the operator has a symbol surface which can be illuminated by a lighting element arranged below the key.
- a lighting element arranged below the key.
- a housing opening facing the key or keys is provided, which is covered by the key or keys, each key being rotatably attached to at least one bearing bracket fixed to the housing, and housing-fixed pivot stops defining the pivoting range of the key.
- the covering of the housing opening by the key or keys prevents dirt from penetrating into the electrical key switch.
- the housing is smaller with the same key surface.
- sealing diaphragms are formed on the keys and / or the housing and bridge the gap between the housing and the respective key. This represents a far-reaching security against contamination. The undesired emission of light, which is emitted by the luminous element present in the housing, is also prevented.
- a contact unit connected to electrical lines is preferably provided in the housing and a reset of the key between the housing and the key acting spring unit clamped.
- the contact unit is expediently a printed circuit board carrying at least one light-emitting element, on which, facing the button, there lies a snap disk which effects the electrical bridging and resets the button.
- the switching finger arranged on the button preferably acts on the snap disk, and this closes or opens the current paths on the circuit board when actuated, the button assuming its initial position under the spring action of the snap disk after the actuating force has ended.
- the housing receiving at least two buttons is designed via electrical lines as a switch unit having a connecting plug.
- FIG. 1 is a view of a steering wheel of a motor vehicle with electrical push buttons according to the invention
- FIG. 2 shows a section through the steering wheel according to FIG. 1 in the direction of arrows II-II,
- FIG. 3 shows a view of the steering wheel according to FIG. 1 in the direction of arrow III with the steering wheel rim broken away
- FIG. 4 shows a perspective view of a switch unit composed of electrical push-button switches according to the invention
- FIG. 5 shows a section through an unactuated electrical key switch according to FIG. 4, along the line VV and FIG. 6 shows the electrical pushbutton switch according to FIG. 5 in the actuated state.
- a steering wheel 1 is shown, to which a switch unit 2 is assigned.
- Behind the steering wheel 1 is the steering column 3, in which the steering column 4 is mounted, at the end of which the steering wheel 1 is located.
- the steering wheel hub 5, which surrounds the steering wheel bowl 6, is arranged concentrically with the steering wheel 1.
- the steering wheel bowl 6 receives the airbag, the hook contact and an electrical connection system through which the contact is transmitted from the rotating steering wheel 1 to the fixed steering column 3.
- the steering wheel 1 has a steering rim 7 which is connected via steering wheel spokes 8 to the steering wheel bowl 6 surrounding the steering wheel hub 5.
- the switch unit 2, which is arranged in the steering wheel bowl 6, consists of two pushbutton switches 9, one of which is arranged on each side of the steering wheel 1.
- Each of the key switches 9 has three keys 10, which are arranged side by side and visible from the operator.
- the pushbutton switch 9 has an approximately rectangular housing 11 with narrow sides 12 and long sides 13. At opposite corners of the housing 11, a fastening flange 14 with an embedded fastening hole 15 is formed between a narrow side 12 and a long side 13. To stiffen the mounting flange 14 there is a strut 16 between the mounting flange 14 and the narrow side 12.
- the housing 11 is made wider at its base 17 than the keys 10. Via a circumferential one
- the housing wall 19, which has the same width as the key 10 on the side facing away from the base 17 of the housing 11, is set back at an incline 18.
- a base 20 is inserted into the housing 11 from the side of the base 17 and fastened there. The base 20 does not cover the entire opening on the base 17 of the housing 11.
- Each key 10 has an actuating bead 30 which is aligned approximately axially parallel to the key bearing 24 and from this is spaced.
- the surfaces running from the key edge 31 on both sides to the actuation bead 30 are the actuation surfaces 32 and 33.
- the actuation surfaces 32 and 33 like the actuation bead 30, run approximately axially parallel to the key bearing 24, perpendicular to the key bearing 24 and starting from the circumferential key edge 31 are also perpendicular to the actuating surfaces 32 and 33 key legs 34.
- a bearing flange 35 adjoins each key leg 34, into which a flange bore 36 is inserted.
- a bearing pin 37 fastened to the bearing bracket 21 lies in the flange bore 36.
- the key bearing 24 is displaced to the key edge 31 and is approximately a quarter of the length of the narrow sides 12 from it. There is a gap 39 between the key edge 31 and the upper side 38 of the housing.
- the bearing bracket 21 which is fixed to the housing is so high that the key bearing 24 is located approximately in the middle at the height of the gap 39.
- light recessed grips 40 are embedded in the actuating surfaces 32 and 33, from which the fingertips or the tip of the thumb do not slip when operating.
- the key switches 9 are fastened to the steering wheel 1 in such a way that the actuating force 42 initiated by the thumb 41 acts on the actuating surface 32 opposite the key bearing 24, approximately perpendicular to the housing 11.
- the actuating force 44 initiated by the fingers 43 acts on the actuation ⁇ surface 33, which is located on the side of the key bearing 24 and extends from the key edge 31 to the actuating bead 30.
- the extent of the actuating surface 32 extends from the key edge 31 to the actuating bead 30, but Above the actuating surface 33.
- the arrangement of the actuating surfaces 32 and 33 with the actuating bead 30 arranged therebetween is approximately V-shaped, but the actuating bead 30 is located off-center on the key 10 more in the direction of the key bearing 24 located.
- the housing 11 of the pushbutton switch 9 is fastened in the region of the steering wheel 1 via the fastening flanges 14.
- the fastening takes place in such a way that the hand 43 which grips the steering ring 7 lies in front of the actuating surface 33 and the thumb 41 in front of the actuating surface 32 and thus the actuating force 42 or 44 can be introduced.
- the most favorable arrangement is given when the actuating bead 30 is approximately parallel to the steering rim 7 at the level of the rear side 45 of the steering rim 7.
- the rear 45 of the steering rim 7 is the side of the steering wheel 1 facing away from the operator.
- the housing 11 is fixed to the steering wheel 1.
- the key switch 9 rotates with the steering wheel 1.
- the steering wheel 1 is surrounded by a steering wheel bowl 6 which also rotates with the steering wheel 1.
- the steering wheel bowl 6 there is an aperture hole 46 which is only so large that the buttons 10 of the pushbutton switch 9 with their actuating surfaces 32 and 33 and their actuating bead 30 protrude there and are freely movable.
- the steering wheel bowl 6 also covers the area of the housing 11 protruding beyond the buttons 10 with the fastening flanges arranged thereon 14 from.
- the pushbutton switch 9 is always attached to the steering wheel 1 at a point where there are no steering wheel spokes 8 in front of the buttons 10 of the pushbutton switch 9.
- the steering wheel 1 has a total of four steering wheel spokes 8.
- the distance between two steering wheel spokes 8 is designed such that the keys 10 of the key switch 9 look directly between the two steering wheel spokes 8.
- the operator has a clear view of the keys 10 or the actuating surfaces 32.
- a symbol 47 is opened on the actuating surfaces 32, which gives an indication of the function of the associated key 10. So that the operator receives an indication of the function of the key 10 even in the dark, a translucent symbol surface 48 is embedded in the actuating surface 32 of the key 10.
- a light-emitting element 50 in the form of an LED is applied to a circuit board 49. If the lighting element 50 is activated, the light also shines through the symbol surface 48 in the key 10. In the non-illuminated state of the key 10, the switching function can be recognized by tactile symbols (not shown) applied to the actuating surfaces 32 and 33.
- the keys 10 Facing the keys 10 there is a housing opening 51 in the housing 11 which is enclosed by the housing walls 19.
- the keys 10 arranged side by side cover the entire housing opening 51.
- a key gap 52 is always left between the individual keys 10 so that the keys 10 do not rub against one another.
- the key bearings 24 are parallel to the long sides 13 of the housing 11 aligned.
- the keys 10 pivot about the key bearing 24 by a limited angle, which is defined by pivot stops 52 and 53. The pivoting away of the key 10 from the housing 11 is limited by the pivot bolt 52 serving as a stop.
- the locking edge 57 abuts the locking pin 54, the limit of the swiveling range is reached.
- the pivoting in of the button 10 is limited by the impact of the switching finger 29 with the interposition of the snap disk 58 on the printed circuit board 49.
- Sealing screens 56 are injection molded onto the keys 10 parallel to the long sides of the housing 11 in the key cavity 27 and are so long that they dip into the housing opening 51 and thus cover the gap 39 between the housing top 38 and the key edge 31.
- the light emitted by the luminous element 50 can therefore not emerge from the housing 11 via the gap 39.
- the sealing diaphragm 56 In the area of the locking pin 54, the sealing diaphragm 56 has an opening, namely the locking slot 55 through which light can penetrate. In order to prevent this, there is a further sealing screen 59 covering the bolt slot 55 in this area on the housing 11.
- a contact unit 60 is arranged in the housing 11 of the pushbutton switch 9.
- the contact unit 60 comprises a circuit board 49, a snap disk 58 and the lighting element 50.
- the pushbutton switch 9 can be connected to the on-board electrical system of a motor vehicle via electrical lines 23 soldered to the printed circuit board 50 and which are led out of the housing 11 through the free space 22. If one of the actuating forces 42, 44 acts on the key 10, it swings against the force of the spring unit 61 arranged in the housing 11 about the key bearing 24. The shift finger 29 compresses the spring unit 61, which is already slightly preloaded. Since the spring unit 61 is the snap disk 58 at the same time, it snaps over and connects or interrupts current paths on the printed circuit board 49 (FIG. 6). The key 10 is automatically pivoted back into its starting position (FIG. 5) by the snap disk 58, which also serves as the spring unit 61, after the actuation force 42 or 44 has ceased to exist.
- FIG. 4 shows a switch unit 2, which consists of two push-button switches 9.
- Each of the key switches 9 carries three keys 10, of which two keys 10 are provided with a symbol 47.
- Electrical lines 23 run from the left key switch 9 to the right key switch 9. In the right key switch 9, the lines 23 are connected on the printed circuit board 49.
- Connecting lines 63 coming out of the right pushbutton switch 9 end in connecting plugs 64 with which the switch unit 2 is connected to an electrical system.
Landscapes
- Steering Controls (AREA)
- Switches With Compound Operations (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19511878 | 1995-03-31 | ||
DE19511878A DE19511878A1 (de) | 1995-03-31 | 1995-03-31 | Elektrischer Tastschalter |
PCT/DE1996/000605 WO1996030921A1 (de) | 1995-03-31 | 1996-03-27 | Elektrischer tastschalter |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0818048A1 true EP0818048A1 (de) | 1998-01-14 |
EP0818048B1 EP0818048B1 (de) | 1999-07-28 |
Family
ID=7758289
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96908016A Expired - Lifetime EP0818048B1 (de) | 1995-03-31 | 1996-03-27 | Elektrischer tastschalter |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0818048B1 (de) |
DE (2) | DE19511878A1 (de) |
ES (1) | ES2136393T3 (de) |
WO (1) | WO1996030921A1 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19718979B4 (de) * | 1997-05-05 | 2007-11-08 | Delphi Technologies, Inc., Troy | Multifunktionstastschalter |
DE19726529C2 (de) * | 1997-06-23 | 2001-07-05 | Eaton Controls Gmbh | Elektrischer Tastschalter |
JP2001014986A (ja) * | 1999-07-01 | 2001-01-19 | Alps Electric Co Ltd | ステアリングホイール用のスイッチ装置 |
DE19936384A1 (de) * | 1999-08-03 | 2001-02-08 | Volkswagen Ag | Lichtschalter |
DE19956872B4 (de) * | 1999-11-26 | 2005-09-01 | Audi Ag | Lenkrad für ein Kraftfahrzeug |
JP4035401B2 (ja) * | 2002-08-28 | 2008-01-23 | アルプス電気株式会社 | 車載用ステアリングスイッチ |
US7762159B2 (en) * | 2002-08-28 | 2010-07-27 | Alps Electric Co., Ltd. | Steering switch for vehicle |
DE202021002012U1 (de) | 2021-06-09 | 2021-06-22 | Claus Linder | Lenkrad mit einem Touchscreen-Bedienelement für Kraftfahrzeuge oder E-Auto, E-Automobil, Lastkraftwagen, Elektrolastkraftwagen oder Baumaschinen |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2153402A (en) * | 1937-09-29 | 1939-04-04 | Gen Electric | Electric switch |
FR992792A (fr) * | 1949-08-12 | 1951-10-23 | App Et D Expl Des Etablissemen | Dispositif pour la commande de l'ouverture et de la fermeture de circuits électriques |
DE7634027U1 (de) * | 1976-10-28 | 1977-04-14 | Rohde & Schwarz, 8000 Muenchen | Momenttastenschalter |
DE3018247A1 (de) * | 1980-05-13 | 1981-11-19 | Robert Bosch Gmbh, 7000 Stuttgart | Lenkrad fuer kraftfahrzeuge |
DE4436291C1 (de) * | 1994-10-11 | 1995-09-28 | Opel Adam Ag | Kraftfahrzeuglenkrad |
-
1995
- 1995-03-31 DE DE19511878A patent/DE19511878A1/de not_active Withdrawn
-
1996
- 1996-03-27 EP EP96908016A patent/EP0818048B1/de not_active Expired - Lifetime
- 1996-03-27 DE DE59602551T patent/DE59602551D1/de not_active Expired - Lifetime
- 1996-03-27 ES ES96908016T patent/ES2136393T3/es not_active Expired - Lifetime
- 1996-03-27 WO PCT/DE1996/000605 patent/WO1996030921A1/de active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO9630921A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP0818048B1 (de) | 1999-07-28 |
WO1996030921A1 (de) | 1996-10-03 |
ES2136393T3 (es) | 1999-11-16 |
DE19511878A1 (de) | 1996-10-02 |
DE59602551D1 (de) | 1999-09-02 |
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