AU664617B2 - Device for switching on and off electric consumers, in particular display instruments in the dashboard of motor vehicles - Google Patents

Device for switching on and off electric consumers, in particular display instruments in the dashboard of motor vehicles Download PDF

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Publication number
AU664617B2
AU664617B2 AU39474/93A AU3947493A AU664617B2 AU 664617 B2 AU664617 B2 AU 664617B2 AU 39474/93 A AU39474/93 A AU 39474/93A AU 3947493 A AU3947493 A AU 3947493A AU 664617 B2 AU664617 B2 AU 664617B2
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AU
Australia
Prior art keywords
switching
printed circuit
circuit board
housing
base plate
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.)
Ceased
Application number
AU39474/93A
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AU3947493A (en
Inventor
Ralf Muller-Sybrichs
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Moto Meter GmbH
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Moto Meter GmbH
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Publication date
Application filed by Moto Meter GmbH filed Critical Moto Meter GmbH
Publication of AU3947493A publication Critical patent/AU3947493A/en
Application granted granted Critical
Publication of AU664617B2 publication Critical patent/AU664617B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/005Electro-mechanical devices, e.g. switched
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00Contacts
    • H01H1/12Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/40Contact mounted so that its contact-making surface is flush with adjoining insulation
    • H01H1/403Contacts forming part of a printed circuit
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H19/00Switches 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
    • H01H19/54Switches 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
    • H01H19/60Angularly-movable actuating part carrying no contacts
    • H01H19/63Contacts actuated by axial cams
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H21/00Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
    • H01H21/02Details
    • H01H21/18Movable parts; Contacts mounted thereon
    • H01H21/22Operating parts, e.g. handle
    • H01H21/24Operating parts, e.g. handle biased to return to normal position upon removal of operating force
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H25/00Switches with compound movement of handle or other operating part
    • H01H25/06Operating part movable both angularly and rectilinearly, the rectilinear movement being along the axis of angular movement

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Push-Button Switches (AREA)
  • Instrument Panels (AREA)

Description

i il; i OPI DATE 13/12/93 AOJP DATE 24/02/94 APPLN. ID 39474/93 PCT NUMBER PCT/DE93/00342 AU9339474 (51) Internationale Patentklassifikation 5 (11) Internationale Veroffentlichungsnummer: WO 93/23862 H01H 1/40, 21/24, 25/06 Al (43) Internationales H01H 19/63 Veriffentlichungsdatum: 25. November 1993 (25.11.93) (21) Internationales Aktenzeichen: PCT/DE93/00342 (81) Bestimmungsstaaten: AU, JP, europiisches Patent (AT, BE, CH, DE, DK, ES, FR, GB, GR, IE, IT, LU, MC, (22) Internationales Anmeldedatum: 21. April 1993 (21.04.93) NL, PT, SE).
Prioritlitsdaten: Veriffentlicht P 42 15 694.7 13. Mai 1992 (13.05.92) DE Mit internationalem Recherchenbericht.
Vor Ablauf der far Anderungen der Anspriiche zugelassenen Frist. VerOffentlichung wird wiederholt falls Anderun- (71) Anmelder: MOTO METER GMBH [DE/DE]; Daimler- gen eintreffen.
strasse 6, D-7250 Leonberg (DE).
(72) Erfinder: MOLLER-SYBRICHS, Ralf Waldstrasse 25, 6f D-7257 Ditzingen (74)Anwilte: BEHRENS, Ralf-Holger usw. Robert Bosch GmbH, Postfach 30 02 20, D-7000 Stuttgart 30 (DE).
(54) Title: DEVICE FOR SWITCHING ON AND OFF ELECTRIC CONSUMERS, IN PARTICULAR DISPLAY INSTRU- MENTS IN THE DASHBOARD OF MOTOR VEHICLES (54) Bezeichnung: VORRICHTUNG ZUM EIN- UND AUSSCHALTEN ELEKTRISCHER VERBRAUCHER, INSBESON- DERE FOR ANZEIGEINSTRUMENTE IM ARMATURENBRETT VON KRAFTFAHRZEUGEN (57) Abstract 11 A device (10) for switching on and off electric consumers '1 is particularly suitable for display instruments of motor vehicles.
The device has a housing (12) into which enters a switching element (92) that projects laterally from the base (74) of a switch- 1 76 96 button A leaf spring (36/1, 36/2) is shaped at each free terminal section (34/1, 34/2) of the housing base plate (24).
Both leaf springs extend along a common longitudinal side (38) of the base plate (24) and their free ends (40/1, 40/2) face each 82 -7 other. The switching element (92) is located between these free 100\ 26 ends of the leaf springs (36/1, 36/2) in the initial position of the 3 16 device By axially pulling then turning the switch-button 28 86 the switching element (92) presses on one of the switching 9 70/2/12 ramps (48/1, 48/2) shaped on the leaf springs (36/1, 36/2) caus- 356/1 /1 B/ 4/ 22 86 2 ing contact elements (18/1, 18/2) arranged under the lower side 6 \2181 51/1 of the leaf springs (36/1, 36/2) to directly and electrically con- 0 nect the selected strip conductors (56/1, 56/1; 58/1, 58/1) on the printed circuit board 54 i I/1 I44 /2 S 66 20 r- 1 La -1- The invention is based on a device for switching on and off electrical loads, in particular for display instruments in the dashboard of motor vehicles.
A commercially available device of this kind is already known which is composed of a relatively large number of components and is consequently correspondingly expensive and, to enable it to be mounted as foreseen on a printed circuit board, not only has screws but also solder connections to the conductor tracks running on the printed circuit board; because of the aforesaid solder connections it is not possible to exchange without difficulty devices of this kind which may have become defective.
In contrast, the invention is based on the object of developing a device which is considerably cheaper in comparison with the device according to the aforesaid prior art and can be replaced without difficulty with a new device in the event of it becoming defective; the number of components forming the device is to be reduced, the components themselves are to be economic to manufacture and the device is to be premountable in such a way that it can be attached on the assigned printed circuit board in a way that is convenient for production.
'i According to the invention there is provided a device for switching on and off electrical loads, in particular for display instruments in the dashboard of motor vehicles, said device including a housing which is attached to a printed circuit board and which has a base plate being arranged parallel to the upper side of the printed circuit board, said printed circuit board having on its upper surface two pairs of conductor tracks which are connectable in pairs, a switchirtr k.tob which protrudes approximately centrally out of the housing and is disposed at a distance from the printed circuit board and is positioned perpendicularly with respect to the base plate, said switching knob having an OFF position which is the rest or basic position, said switching knob being rotatable in either direction to effect switching, said switching occurring by axially pulling said switching knob in a direction away A from said printed circuit board against the bias of a spring element and subsequently rotating said switching knob in either of said rotatable directions, the direction of rotation determining which pair of conducting tracks are connected in an ON position, said knob, when released, autcmatically returning to the OFF or 22/9/95LP7477SPE,I 0 I abasic position, said base plate of the housing having in its peripheral region at two free end sections along respective longitudinal sides of the base plate two integrally formed leaf springs, each leaf spring having at their free end on the side pointing away from the printed circuit board a switching ramp which is also integrally formed and rises from the respective free end in a ramp surface, each leaf spring on the side, opposite each switching ramp, a holding element which is also integrally formed and to which an electrically conductive contact element is secured, the contact element being located in the OFF position of the device at a small distance directly above the pairs of conductor tracks, a switching element which protrudes radially from a subsection of the switching knob, said switching element, in the OFF position, located in a gap formed between the free ends of said leaf springs, whereby when said switching knob is axially pulled and rotated in either of said rotatable directions to determine which pair of conducting tracks are connected in said ON position, said switching element rides on the corresponding ramp surface to force the corresponding leaf spring towards said printed circuit S board to allow its contact element to bridge the corresponding conductor tracks.
i 4, I I S :ft 22/9195LP7477SPE, oe! pr 2 R. 25225 advant.. geously ifthe de ic a e bn in .cca .rdanc with tho fzaturco in Claim 2.
An exemplary embodiment of the invention is illustrated in the drawing and explained in greater detail in the subsequent description.
In the drawing: Figure 1 shows a longitudinal section through a device, arranged on a printed circuit board, in accordance with the invention in an enlarged view, Figure 2 shows the top view of the device according to Figure 1 (the scale carrier plate illustrated in Figure 1 has been omitted), Figure 3 shows a perspective view of the device according to the invention in the Off position on an enlarged scale and Figure 4 shows a perspective view of the device according to Figure 3 in one of its two possible On positions.
SThe device 10, illustrated in Figures 1 to 5, for switching on and off electrical loads is provided in particular for display instruments in the dashboard of motor vehicles and can be used for example for switching on or adjusting a clock. This device 10 is composed essentially of the following components: a housing 12, a switching knob 14, a spring element 16, electrically conductive contact elements 18, a printed circuit board and attachment means 22 which are preferably screws.
The housing 12 consists of a temperature-stable, elastic material which has as little cold flow as possible and can be processed well using injection moulding or pressing technology; glass fibre-reinforced polyamide is suitable as material for this housing 12. This housing 12 has an elongated base plate 24 from which the head part 26 which is also formed on extends at a distance from the printed circuit board; this head part 26 is arranged approximately centrally on the base plate 24. A tubular guide 28 extends through this head part 26 and also through the base plate 24 but at its end section at a distance from the printed circuit board it has an opening 30 with a smaller diameter and consequently forms A4 k.6,
L
R. 25225 a shoulder 32.
In the peripheral region, such as for example at the two free end sections 34/1 and 34/2 of the base plate 24 of the housing 12, in each case a leaf spring 36/1 and 36/2 is also formed on, which leaf springs consist of the same material as the housing 12, extend with a small amount of spacing along one of the longitudinal sides 38 Sof the base plate 24, lie with their free ends 40/1 and 40/2 opposite one another in parallel forming a gap 42 and, at the same time, preferably one below the other and are also arranged in the same plane as the base plate 24.
The aforesaid longitudinal side 38 of the base plate 24 is bent in the present exemplary embodiment and is interrupted by a slot 46 which is bounded between two lateral holding faces 44/1 and 44/2. This slot 46 runs radially with respect to the guide 28 in the housing 12 Sand is flush with the gap 42 between the two free ends 40/1 and 40/2 of the two leaf springs 36/1 and 36/2.
On the side, facing away from the printed circuit board 20, of the leaf springs 36/1 and 36/2, in each case a switching ramp 48/1 and 48/2 is also formed on to the free end section, which ramp rises in a tapering shape from the respective free end 40/1 and 40/2.
On the sides, opposite the switching ramps 48/1 and 48/2, of the leaf springs 36/1 and 36/2, in each case a preferably pin-shaped holding element 50/1 and 50/2 is also formed on, which holding elements extend in the direction of the printed circuit board 20 and preferably dip into correspondingly flush holes 52/1 and 52/2 in the printed circuit board 20. On these holding elements 50/1 and 50/2, in each case one of the contact elements 18/1 is secured, which holding elements are held thereon by means of locking means (for example barbs, adhesive, locking engagement or the like) which are not illustrated and, as illustrated in the example, are of preferably annular shape. The contact elements 18/1 and 18/2 preferably consist of electrically conductive rubber and "their thickness is dimensioned such that in the Off I-0 position of the device 10 described below the said qAr QI? 4 R. 25225 contact elements are located at a distance above the conductor tracks 56/1 and 56/2 running on the upper side 54 of the printed circuit board 20 and also above the conductor tracks 58/1 and 58/2. The contact elements 18/1 and 18/2 are located with one side on the underside of the base plate 24.
On the underside, facing the printed circuit board 20, of the base plate 24 and possibly also on the upper side, reinforcement ribs 60 can also be formed on.
In order to secure the housing 12 on the printed circuit board 20, through-bores 62 for the attachment means 22 are provided in the base plate 24. In the present example, screws are used as attachment means 22 which are provided in corresponding threads in the printed circuit board 20 but usually in a supporting plate 64 arranged parallel to the printed circuit board the housing 12, the printed circuit board 20 and a supporting plate 64 which may also be arranged can be fixed by guide projections 66 on the supporting plate 64 using separate bushings or the like.
The housing is provided laterally, specifically in the region of the already mentioned holding faces 44/1 and 44/2, with a recess 68 which extends at a dis- Stance from the printed circuit board from the slot 46 formed between the holding faces 44/1 and 44/2 and is dimensioned in such a way that it constitutes a boundary (explained below) for an axial movement of the switching knob 14 and has in its width side stops 70/1 and 70/2 for the rotational movement of the switching knob 14 which is also to be explained later. The holding faces 44/1 and 44/2 are connected to the side stops 70/1 and 70/2 via slopes which are not labelled.
The switching knob 14 is composed of two components, specifically of a head part 72 and a foot part 74; both components 72 and 74 which preferably consist of plastic are connected axially to one another during premounting by means of known measures; in the present example, the head part 72 has been provided near to the printed circuit board with a blind hole 76 in which a pin I ~I: f 1-7 5 R. 25225 78 which is formed on to the end section, at a distance from the printed circuit board, of the foot part 74 is secured. The attachment of this pin 78 in the blind hole 76 can take place for example by means of bonding or locking connections. The head part 72 has on its end section near to the printed circuit board a flange with which it is located in the Off position of the device 10 near to the end face 82, at a distance from the printed circuit board, of the head part 26 of the housing.
The end section, at a distance from the printed circuit board, of the head part 72 serves as handle section 84 which is provided in an easy-to-grip fashion by means of knurling or the like. This head part 72 consists of a material which is temperature-stable and can be processed well using injection moulding or pressing technology; a polyester elastomer is suitable as such a material. This head part 72 is essentially cylindrical and its length is dimensioned such that it protrudes out of the respective display instrument and can be gripped in front of its transparent panel (not illustrated).
The foot part 74 of the switching knob 14 also consists of a temperature-stable material which is also as far as possible electrically insulating and can be processed well using injection moulding or pressing technology, and moreover displays low friction when interacting with other materials and in addition also has a high mechanical stability; polyacetal is suitable for this purpose. This foot part 74 can be divided in the axial direction into three sections, specifically into the already mentioned pin 78 which is adjoined in the direction of the printed circuit board 20 by a central section 86 with a relatively large diameter which is then adjoined by a subsection 88 with such a diameter, that it is guided exactly in the longitudinal direction in the guide 28 in the head part 26 of the housing 12. The end face 90 of the subsection 88 ends at the printed circuit board 20. A switching element 92 protrudes laterally out pp -1 6 R. 25225 of the subsection 8 of the switching knob foot pia;rt 74 and is preferably cylindrical and arranged such a way that when the device 10 is in the Off position it lies inside the gap 42 between the two holding faces 36/1 and 36/2 and in the slot 46 in the base plate 24. This switching element 92 is preferably also formed on to the switching knob foot part 74 at the same time, but can also be attached to the subsection 8 [sic] by means of a different known method (welding, bonding or the like).
The spring element 16 which is subject to mechanical pretensioning is accommodated in the annular space which is formed between the central section 86 of the switching knob foot part 74 and the guide 28 in the head part 26 of the housing, which spring element is supported on the one hand on the shoulder 32 in the guide 28 of the head part 26 of the housing and, on the other hand, on the shoulder 94 wh;,ch is formed between central section 86 and subsection 88; preferably a helical spring which surrounds the central section 86 of the foot part is used as spring element 16. The cross-section of the central section 86 of the foot part is dimensioned in such a way that it is guided in the passage 30 in the head part 26 of the housing.
In Figure 1, a scale carrier plate 96 is also illustrated in supplementary fashion, in which scale carrier, plate an opening 98 for feeding through the switching knob head part 72 is located and which is fixed by means of a guide sheath 100 which is formed on to the scale carrier plate 96, points in the direction of the printed circuit board 20 and engages over the head part 26 of the housing of the device The function of this device 10 is illustrated in Figures 3 and 4. Figure 3 shows the device 10 in its basic position (Off position) in which the conductor tracks 56/1 and 56/2 and the conductor tracks 5b/l and 58/2 are still electrically unconnected cn the upper side 54 of the printed circuit board 20. In this basic position, the switching element 92 is located fixed between I? the two holding faces 44/1 and 44/2 which form the slot i
L
-7 R. 25225 46 and also between the two free ends 40/1 and 40/2 of the two leaf springs 36/1 and 36/2 which form the gap 42; the flange 80 of the head part 72 of the switching knob 14 is located here near to the head part 72 of the housing 26 and is held in this position by means of the spring element 16 which is illustrated in Figure 1. In this basic position, the two contact elements 16/1 and 18/2 which are arranged on the side, near to the printed circuit board, of the respective leaf spring 36/1 or 36/2 are at a distance opposite the conductor tracks 56/1 and 56/2, to be electrically connected in a first switching position, or opposite the conductor tracks 58/1 and 58/2 to be connected in a second switching position.
In Figure 4, one of the two possible On positions of the device 10 is illustrated, which position is obtained by axially pul ing the switching knob 14 over a short distance in the directiu of the arrow designated by A and subsequently rotating the switching knob 14 over a short distance in the clockwise direction in the direction of the arrow designated by Dl1 As a result of the pulling and the rotation which follows in the clockwise direction D1 at the switching knob 14, the switching element 92 is pulled out of the fi-ing slot 46 of the housing 12 and thus removed from its lateral fixing; the possible axial longitudinal movement of the switching knob 14 is limited by the height of the recess 68 and the rotational movement D1 can only take place as far as the i lateral stop 70/1 in the base plate 24. During the jrotational movement Dl, the switching element 92 moves onto the switching ramp 48/1 and consequently presses the free end section of the leaf spring 36/1 in the direction of the printed circuit board 20. The switching ramp 48/1 is dimensioned in such a way that the contact element 18/1 which is attached to this leaf spring 36/1 then presses on the two associated conductor tracks 56/1 and 56/2 and thus connects them to one another electrically.
In the second possible switching position (not illustrated) in which the switching knob 14 would have to be rotated in the anticlockwise di ection, the switching wI I 1 -8 R. 25225 element 92 would interact with the switching ramp 48/2 and would connect the two conductor tracks 58/1 and 58/2 to one another electrically by means of the contact element 18/2 on the leaf spring 36/2, In the two aforesaid switching positions, the flange 80 on the switching knob 14 is at a clear distance from the housing 12 of the device The conductcr tracks 56/1 and 56/2 or 58/1 and 58/2 each lead to the associated electrical circuits with their loads (not illustrated).
After the switching kr.ob 14 is released, it is pressed back into its basic position as a result of the spring element 16 which is shown in Figure 1 and is subject to mechanical pretensioning, so that the switching element 92 then engages again in the slot 46 in the base plate 24 and is fixed again.
If required by the objective of the application, a second pair of leaf springs and correspondingly then also an additional switching element which is also attached to the subsection 88 of the switching knob foot part 74 can also be provided on the longitudinal side opposite the longitudinal side 38 of the base plate ,4.
According to a different embodiment of the device, the base plate 24 can be, when viewed from above, of circular, oval, oblong or similar shape; the leaf springs 36/1 and 36/2 which bear the switching ramps 48/1 and 48/2 are to be matched to the respective shape of the base plate 24.
Furthermore, it is possible to connect electrically more than two conductor tracks 56/1, 56/2 and 58/1, i 58/2 to at least one of the leaf springs 36/1, 36/2 by means of the contact element 18/1, 18/2. Alternatively, a plurality of independent contact elements for different pairs of conductor tracks can also be attached to each leaf spring 36/1, 36/2.
However, other known attachment means 22 (for example rivets) can also be used as an alternative to connecting base plate 24 and printed circuit board 20 or !k -supporting plate 54 by means of screws, cv

Claims (11)

1. A device for switching on and off electrical loads, in particular for display instruments in the dashboard of motor vehicles, said device including a housing which is attached to a printed circuit board and which has a base plate being arranged parallel to the upper side of the printed circuit board, said printed circuit board having on its upper surface two pairs of conductor tracks which are connectable in pairs, a switching knob which protrudes approximately centrally out of the housing and is disposed at a distnce from the printed circuit board and is positioned perpendicularly with respect to the base plate, said switching knob having an OFF position which is the rest or basic position, said switching knob being rotatable in either direction to effect switching, said switching occurring by axially pulling said switching knob in a direction away from said printed circuit board against the bias of a spring element and subsequently rotating said switching knob in either of said rotatable directions, the direction of rotation determining which pair of conducting tracks are connected in an ON position, said knob, when released, automatically returning to the OFF or basic position, said base plate of the housing having in its peripheral region at two free end sections along respective longitudinal sides of the base plate two integrally formed leaf springs, each leaf spring having at their free end on the side pointing away from the printed circuit board a switching ramp which is also integrally formed and rises from the respective free end in a ramp surface, each leaf spring on the side, opposite each switching ramp, a holding element which is also integrally formed and to which an electrically conductive contact element is secured, the contact element being located in the OFF position of the device at a small distance directly above the pairs 25 of conductor tracks, a switching element which protrudes radially from a S:i subsection of the switching knob, said switching element, in the OFF position, located in a gap formed between the free ends of said leaf springs, whereby when said switching knob is axially pulled and rotated in either of said rotatable directions to determine which pair of conducting tracks are connected in said ON position, said switching element rides on the corresponding ramp surface to force the 22/9/95LP7477SPE,9 I= r_ r I- corresponding leaf spring towards said printed circuit board to allow its contact element to bridge the corresponding conductor tracks.
2. 'The device according to Claim 1 wherein the switching knob includes a head part from which said switching element protrudes, a foot part which is connected axially to the head part, said subsection, from which said switching element protrudes, is positioned upright on the printed circuit board, said foot part including said subsection is positioned upright on the printed circuit board, said foot part and a central section which adjoins at a distance from the printed circuit board, said central section having a smaller diameter than the subsection and being surrounded coaxially by the spring element which is supported on the one hand on a shoulder which is formed between said subsection and said central section and, on the other hand, on a further shoulder, at a distance from the printed circuit board, of a guide of the housing.
3. The device according to any one of Claims 1 or 2, wherein on the base plate of the housing in the region on either side of the switching element, a holding face for the basic or OFF position of the switching element is provided.
4, The device according to any one of Claims 1 to 3, wherein on the base plate of the housing in the region on either side of the switching element, a lateral stop for the two ON positions of the switching element is provided. F
5. The device according to any one of Claims i to 4, wherein holding elements for the contact elements are provided which are preferably of pin-shaped design and have a length such that they are guided reciprocally in holes on the printed circuit board both in the ON and in the OFF position.
6. The device according to any one of Claims 1 to 5, wherein the holding '25 elements have locking elements for the conductive contact elements.
S"7. The device according to any one of Claims 1 to 6, wherein the spring element is a helical spring.
8. The device according to any one of Claims 1 to 7, wherein the housing is connected to the printed circuit board and/or additionally to a carrier board, holding the printed circuit board, by means of screws as an attachment means. 22/9195LP7477.SPE, I -l~ -11
9. The device according to any one of Claims 1 to 8, wherein the base plate of the housing is held in the correct position with respect to the printed circuit board by means of guide projections, bushings or the like which are secured to the printed circuit board and/or a carrier board.
10. The device according to any one of Claims 1 to 9, wherein reinforcement ribs are also formed onto the side, facing the printed circuit board, of the base plate of the housing.
11. A device for switching on and off electrical loads substantially as hereinbefore described with reference to the accompanying drawings. DATED this 22nd day of September, 1995. MOTO METER GMBH By their Patent Attorneys: CALLINAN LAWRIE i I j 22/9/95LP7477.SPE,11
AU39474/93A 1992-05-13 1993-04-21 Device for switching on and off electric consumers, in particular display instruments in the dashboard of motor vehicles Ceased AU664617B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4215694A DE4215694A1 (en) 1992-05-13 1992-05-13 Device for switching electrical consumers on and off, in particular for display instruments in the dashboard of motor vehicles
DE9206449U DE9206449U1 (en) 1992-05-13 1992-05-13 Device for switching electrical consumers on and off, in particular for display instruments in the dashboard of motor vehicles
DE4215694 1992-05-13
PCT/DE1993/000342 WO1993023862A1 (en) 1992-05-13 1993-04-21 Device for switching on and off electric consumers, in particular display instruments in the dashboard of motor vehicles

Publications (2)

Publication Number Publication Date
AU3947493A AU3947493A (en) 1993-12-13
AU664617B2 true AU664617B2 (en) 1995-11-23

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AU39474/93A Ceased AU664617B2 (en) 1992-05-13 1993-04-21 Device for switching on and off electric consumers, in particular display instruments in the dashboard of motor vehicles

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EP (1) EP0594807B1 (en)
JP (1) JP3274137B2 (en)
AU (1) AU664617B2 (en)
DE (3) DE9206449U1 (en)
ES (1) ES2090992T3 (en)
WO (1) WO1993023862A1 (en)

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US9097757B2 (en) 2011-04-14 2015-08-04 National Instruments Corporation Switching element system and method
US8704408B2 (en) 2011-04-14 2014-04-22 National Instruments Corporation Switch matrix modeling system and method
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DE9206449U1 (en) 1994-01-27
AU3947493A (en) 1993-12-13
WO1993023862A1 (en) 1993-11-25
EP0594807A1 (en) 1994-05-04
ES2090992T3 (en) 1996-10-16
DE4215694A1 (en) 1993-12-09
EP0594807B1 (en) 1996-07-03
DE59303126D1 (en) 1996-08-08
JP3274137B2 (en) 2002-04-15
JPH06511599A (en) 1994-12-22

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