EP2048676A2 - Sliding contact switch - Google Patents
Sliding contact switch Download PDFInfo
- Publication number
- EP2048676A2 EP2048676A2 EP08105499A EP08105499A EP2048676A2 EP 2048676 A2 EP2048676 A2 EP 2048676A2 EP 08105499 A EP08105499 A EP 08105499A EP 08105499 A EP08105499 A EP 08105499A EP 2048676 A2 EP2048676 A2 EP 2048676A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact
- sliding
- grinding
- sliding contact
- contactor
- 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.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/50—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member
- H01H13/64—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member wherein the switch has more than two electrically distinguishable positions, e.g. multi-position push-button switches
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- 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
- H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
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- 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
- H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
- H01H1/40—Contact mounted so that its contact-making surface is flush with adjoining insulation
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- 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
- H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
- H01H1/42—Knife-and-clip contacts
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- 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
- H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
- H01H1/40—Contact mounted so that its contact-making surface is flush with adjoining insulation
- H01H2001/406—Contact mounted so that its contact-making surface is flush with adjoining insulation with holes or recesses between adjacent contacts, e.g. to collect abrasion powder
Definitions
- the invention relates to an electrical sliding contact switch, in particular a micro, miniature or subminiature switch whose switching positions are changed by sliding movement of the contact body.
- Electrical sliding contact switch of this type serve as micro, miniature or subminiaturschalter in many applications, such. B. in the automotive and home appliance technology. In these switches sliding contacts are brought in a sliding movement of a contact point to another contact point. The electrically conductive connection should be made only at the respective contact points.
- Out DE 10 2006 011 930 B3 is an electrical sliding contact switch with a pivotally mounted contact rocker known.
- the known switch has a base of electrically insulating plastic and a lid.
- the voltage is applied to a common contact body, which is constantly in electrically conductive connection with a contact rocker mounted on it.
- the contact rocker has two pairs of contact fingers that sweep contact areas on two select contact bodies.
- a positioning spring in C or ⁇ form pulls the contact rocker into a first oblique position, in which the shift fingers rest on both sides against the contact region of the first selection contact body.
- By pressure on an actuator, which is displaceable in the lid and sealed by a sealing sleeve the contact rocker is forced into its opposite second pivotal position in which abut the contact fingers on both sides of the contact region of a second selective contact body.
- EP 1 764 813 A1 describes an electrical switch having a common contact body as well as a first selective contact body and a second elective contact body.
- a contactor With the common contact body, a contactor is mechanically and electrically connected.
- the contactor consists of an elastic, electrically conductive material.
- the contactor is biased such that the contact fingers rest against the contact surfaces of the first select contact body. By pressure on the contactor of this is elastically deformed, and pivoted with the contact fingers so that the contact fingers comprise the contact surfaces of the second electroresistive switching effect.
- a disadvantage of the switch of the prior art is that by the sliding movement of the sliding contacts on the housing areas between the selective contact bodies metallic Deposits may occur, which can even make a conductive connection between the individual Wahlrobeskon. These deposits are reinforced by contamination and by the burning of the lubricating grease or oil used, so that the grinding path, which is formed by the sliding contacts in the grinding region of the housing, can make a conductive connection.
- the invention is therefore based on the object to provide an electrical switch of the type mentioned, in which the switching operation can be optimally designed according to the electrical and mechanical requirements, so that, despite economical production, a long-term reliable continuous operation is guaranteed.
- a contactor between selector contact bodies is brought dragging from a switching position to another switching position.
- the contactor with one end constantly in electrically conductive connection with a common contact body, which usually represents a ground terminal.
- On the contactor sliding contacts are formed, which make electrical contact with WahlARM emotionsn in the respective switching position.
- these sliding contacts are brought out of engagement with a first selector contact body and slidingly into engagement with a second selector contact body, wherein between the two selector contact bodies of the sliding contact is passed over a grinding area.
- the switch according to the invention has two selector contact body.
- the sliding contact switch according to the invention can also have, for example, as a simple on / off switch only one selector contact body, wherein the sliding contact is reciprocally coupled between an electrically non-conductive grinding region and the contact surface of a selector contact body.
- the sliding contact does not touch the rib in the connection region to the grinding surface, ie at the foot of the rib, during the passage of the sliding contact over the rib.
- the sliding contact can not penetrate to the bottom of the rib due to its crowned shape, with a radius which is greater than the radius of the point of attachment of the rib to the grinding surface. This creates on both sides of the rib in each case an interruption in the grinding path, in which abrasion and / or impurities can not make a conductive connection. A formation of a conductive connection between the election contact body over the rib away is thus not possible.
- the contact point of the sliding contact changes continuously as it traverses the rib so that possible abrasion occurs uniformly over the entire surface of the sliding contact.
- the shape of the rib can be determined largely freely, it must nevertheless be ensured that the sliding contact and the rib are designed so that at the moment in which the sliding contact touches the rib and not yet lifted from the grinding area, a gap remains between sliding contact and ribbed bottom, in which the sliding contact can not penetrate.
- This gap interrupts, as already indicated above, on the one hand, the sliding track between the selector contact bodies and on the other hand can accumulate in this gap grease or oil and thus improve the lubrication of the sliding contact.
- Lubricating grease used will preferably accumulate in the bottom of the rib and spread along the rib, so that lubricating oil or grease can be absorbed to lubricate the sliding contact each time the sliding contact is brushed away.
- the groove for the lubricant used also acts as a kind of reservoir.
- tactile feedback that occurs when the sliding contact over the groove or the rib.
- This can be used to detect a switching state, for example, a basic position of the switch. When performing a constriction, this is particularly easy because the sliding contacts are pressed easily into the indentation due to their contact force and an increase in the resistance to movement for further movement of the sliding contacts can be seen.
- a center-zero position is detectable, which may be a basic position for the switch. But even by sequential arrangement of two ribs can achieve such an effect.
- the tactile feedback can be utilized by crossing the sliding contact of the first rib to determine after leaving the selection contact a non-conductive position of the sliding contact and vice versa after leaving the Abrasive area a conductive connection can be detected on a dial contact body.
- a switch position with conductive electrical connection or a position with non-conductive connection can be determined in a simple and reliable manner.
- the non-conductive grinding region which is also referred to as an insulator, arranged between two conductive regions, each associated with a selective contact body or even belong to a single contact body (selector contact body).
- the sliding contact of the contactor is located on the grinding area of the insulator, so that no passage takes place in the switch.
- the sliding contact can be brought from a position on a non-conductive grinding area in a conductive contact region on a (optional) contact body be moved from there to another grinding area, for example, another insulator, or back to the (output) insulator.
- the switch according to the invention can also be made of a switching or normal position, in which the contactor is in conductive connection with at least one sliding contact with a selective contact body, and thus a passage through the switch takes place over a grinding range, during which no passage through the switch takes place be moved to another dial contact body, in which case again takes place a passage through the switch.
- the contactor with a different contact point with a common contact body for the contact body which usually represents the ground contact of the switch, in constantly electrically conductive connection.
- the switching point can be precisely defined from one selection contact body to another elective contact body, since in addition to the movement running in the plane of the grinding regions, a movement directed away from the grinding surface is added, which permits a defined switching point.
- This additional movement can also be achieved that the distances between the selector contact bodies can be optimally designed so as to enable a faster and more accurate switching.
- the switching path remains largely constant regardless of the number of switching cycles. A shortening of the dead travel due to the flattening of the initially crowned sliding contact and the associated increase in the contact surface is practically not in the switch design according to the invention.
- the sliding contactor with its sliding contacts and its movement possibilities, ie the sliding contacts on the grinding path in the grinding area a variety of possibilities can be implemented, which are all encompassed by the inventive concept, as long as the trajectory / sliding track, the sliding contact in electrically non-conductive Abrasive region is interrupted by introducing an elevation or depression, so that zones in the grinding area and / or on the surface of the elevation or depression are present, which does not touch the sliding contact. Since the idea of the invention allows already existing electrical circuit breaker concepts to change according to the concept of the invention, such modified electrical contact switches are also included in the inventive concept.
- the invention is likewise not limited to switches which switch back and forth between two selector contact bodies with an electrically nonconductive grinding region arranged therebetween or switch from an electrically non-conductive grinding region into an electrically conductive region and vice versa, but it is readily apparent to the person skilled in the art that the concept of the invention can also be applied in rotary sliding contact switches, potentiometers or rotary switches. The same applies to linear switches with a purely linear movement of the contactor or the sliding contacts from a first position to a second position. Of course, switches that perform a combination of linear and rotary movements of the sliding contacts and thereby run over elevations or depressions in non-conductive areas, also included in the inventive concept.
- the manner in which the contactor is brought from a contact point on a selector contact body over the barrier on the grinding region of the housing to another contact point of a selector contact body is included in the invention in all possible embodiments. It does not matter whether the contactor is elastically biased or elastically brought into a biased position or simply pushed without elastic deformation of a range in the next area, pulled or rotated. In all these cases, the inventive concept is also realized when between two switch positions for a sliding contact a geometric obstacle, for. B. is introduced in the form of a rib or a groove which interrupts the slideway, so that between two adjacent areas no conductive connection is established by the slideway.
- FIG. 1 shows a sliding contact switch, as it is known from the aforementioned prior art, but with an introduced in the grinding area rib.
- the switch shown has a housing 2, in which a common contact body 4 and two selective contact body 10 are arranged with their broad sides flat next to each other so that in each case one end of the three contact body protrudes from the housing.
- the common contact body 4 and the two selector contact body 10 are arranged or embedded in the housing 2 such that there is no conductive connection between them.
- a contactor 6 is in constantly conducting electrical connection with the contact body 4.
- the contactor can be switched by an actuator 14 elastically between the contact surfaces 11 of the selector contact body 10 back and forth.
- the contact surfaces 11, which are located on both sides of the selection contact body 10 of contact fingers 22, which are located on the contactor 6, comprises elastically biased.
- the wiper fingers 22 as they move from one selector contact body to the other selector contact body, cross a rib 16 which is arranged in the grinding region 20 approximately transversely to the direction of movement.
- FIG. 2 is shown in dashed lines, the respective sliding track 12 for the sliding contacts 8. It can be seen that the slideway 12 is interrupted in each case before and after the rib, as seen in the direction of movement of the Schleiffinger 22.
- FIG. 4 the two Schleiffinger 22 are shown in the position in which they just touch the rib 16. With further progression of Schleiffinger 22 in the direction of in the FIGS. 3 and 4 indicated arrow lifting the Schleiffinger 22 from the grinding area 20 and cross the rib 16. At the moment of contact of the contact fingers 22 with the rib 16, as in FIG. 4 shown, contact-free zones 18 are present between the contact fingers 22 and the grinding area 20, in which the sliding contact 8 can not occur.
- two ribs 16 are provided in the grinding area 20, which, for example, can serve to hold the Schleiffinger 22 in a defined position. From this, they can then be deflected in both directions in order to enter into a conductive connection with both the first selection contact body 10 and the second selection contact body 10.
- the grinding region 20 is in this embodiment, a part of the housing, that is, the selective contact body are embedded in the housing so that the area 20 is filled between them by housing material.
- This can be realized, for example, in the injection molding process of the housing, wherein care must be taken that the contact surfaces 11 of the selector contact body are not covered with injection molding material. Simultaneously with the embedding of the selector contact body in the housing and the rib 16 and the groove 16 may be formed, in FIG. 3 is shown.
- FIG. 3 shows how the already FIG. 4 the principle of the sliding moving contact fingers of a selective contact body 10 via a grinding area 20 to a second dial contact body 10.
- the sliding track of the sliding contacts 22 is interrupted simply and reliably here by a design measure.
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- Slide Switches (AREA)
- Contacts (AREA)
Abstract
Description
Die Erfindung betrifft einen elektrischen Schleifkontaktschalter, insbesondere einen Mikro-, Miniatur- oder Subminiaturschalter, dessen Schaltstellungen durch schleifende Bewegung der Kontaktkörper geändert werden.The invention relates to an electrical sliding contact switch, in particular a micro, miniature or subminiature switch whose switching positions are changed by sliding movement of the contact body.
Elektrische Schleifkontaktschalter dieser Art dienen als Mikro-, Miniaturschalter oder Subminiaturschalter in vielen Anwendungsbereichen, wie z. B. in der Automobil- und der Haushaltsgerätetechnik. Bei diesen Schaltern werden Schleifkontakte in einer schleifenden Bewegung von einer Kontaktstelle zu einer anderen Kontaktstelle gebracht. Dabei soll die elektrisch leitende Verbindung nur an den jeweiligen Kontaktstellen erfolgen.Electrical sliding contact switch of this type serve as micro, miniature or subminiaturschalter in many applications, such. B. in the automotive and home appliance technology. In these switches sliding contacts are brought in a sliding movement of a contact point to another contact point. The electrically conductive connection should be made only at the respective contact points.
Aus
Nachteilig an dem Schalter des Standes der Technik ist, dass durch das schleifende Bewegen der Schleifkontakte auf den Gehäusebereichen zwischen den Wahlkontaktkörpern metallische Ablagerungen auftreten können, welche selbst eine leitende Verbindung zwischen den einzelnen Wahlkontaktkörpern herstellen können. Diese Ablagerungen werden durch Verschmutzungen und durch den Abbrand des eingesetzten Schmierfetts bzw. -öls verstärkt, so dass die Schleifbahn, welche durch die Schleifkontakte im Schleifbereich des Gehäuses ausgebildet wird, eine leitende Verbindung herstellen kann.A disadvantage of the switch of the prior art is that by the sliding movement of the sliding contacts on the housing areas between the selective contact bodies metallic Deposits may occur, which can even make a conductive connection between the individual Wahlkontaktkörpern. These deposits are reinforced by contamination and by the burning of the lubricating grease or oil used, so that the grinding path, which is formed by the sliding contacts in the grinding region of the housing, can make a conductive connection.
Mit fortschreitendem Verschleiß der Schleifkontakte, die in ihrem ursprünglichen Zustand bevorzugt eine Kugelabschnittsform aufweisen, werden die Schleifkontakte im Schalter des Standes der Technik immer flacher, so dass die anfängliche Punktberührung der Schleifkontakte mit der Zeit in eine Flächenberührung übergeht. Das hat die Auswirkung, dass der Anpressdruck/ Flächendruck der Schleifkontakte auf den Wahlkontaktkörpern immer geringer wird, da die Auflagefläche der Schleifkontakte immer größer wird, und daher eine immer schlechtere Kontaktsicherheit erreicht wird.With progressive wear of the sliding contacts, which preferably have a spherical segment shape in their original state, the sliding contacts in the switch of the prior art become ever flatter, so that the initial point contact of the sliding contacts with time passes into a surface contact. This has the effect that the contact pressure / surface pressure of the sliding contacts on the selector contact bodies is getting smaller, since the contact surface of the sliding contacts is getting larger, and therefore an ever poorer contact reliability is achieved.
Die Abflachung der Schleifkontakte mit zunehmendem Verschleiß hat aber auch zur Folge, dass sich der Schaltpunkt verschiebt, da die Auflagefläche größer wird. Im Extremfall kann es dadurch zu einem gleichzeitigen Kontakt eines Schleifkontaktes auf zwei Wahlkontaktkörpern kommen, und zu einem Kurzschluss führen. Um dies zu vermeiden muss der Abstand zwischen den Wahlkontaktkörpern so groß gewählt werden, dass dieser Effekt berücksichtigt ist. Dadurch kommt es im Neuzustand zu langen Umschaltwegen (Totwegen) im Schalter, die mit der Nutzungsdauer, d.h. mit zunehmendem Verschleiß der Schleifkontakte, kürzer werden. Daraus ergibt sich auch eine mit der Nutzungsdauer des Schalters abnehmende Schaltzeit, d.h. die Schaltzeiten des bekannten Schalters können nicht konstant gehalten werden. Damit ergeben sich relativ große Schaltpunkttoleranzen, die über die Lebensdauer des Schalters aufrechterhalten werden müssen.However, the flattening of the sliding contacts with increasing wear also has the consequence that the switching point shifts, since the bearing surface is larger. In extreme cases, this may lead to a simultaneous contact of a sliding contact on two selective contact bodies, and lead to a short circuit. To avoid this, the distance between the selection contact bodies must be chosen so large that this effect is taken into account. This results in the new state to long Umschaltwegen (dead paths) in the switch, with the service life, i. with increasing wear of the sliding contacts, become shorter. This also results in a decreasing switching time with the service life of the switch, i. the switching times of the known switch can not be kept constant. This results in relatively large switching point tolerances, which must be maintained over the life of the switch.
Der Erfindung liegt daher die Aufgabe zu Grunde, einen elektrischen Schalter der genannten Art zu schaffen, bei dem der Schaltvorgang entsprechend den elektrotechnischen und mechanischen Forderungen optimal gestaltet werden kann, so dass trotz wirtschaftlicher Herstellung ein langjähriger zuverlässiger Dauerbetrieb gewährleistet ist.The invention is therefore based on the object to provide an electrical switch of the type mentioned, in which the switching operation can be optimally designed according to the electrical and mechanical requirements, so that, despite economical production, a long-term reliable continuous operation is guaranteed.
Die Lösung dieser Aufgabe wird durch einen elektrischen Schleifkontaktschalter mit der Gesamtheit der Merkmale des Anspruchs 1 erreicht. Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen.The solution of this problem is achieved by an electrical sliding contact switch with the entirety of the features of claim 1. Further developments of the invention will become apparent from the dependent claims.
Ausgehend von dem gattungsbildenden Schalter gemäß
Damit im Betrieb des Schalters durch häufiges Hin- und Herschalten zwischen den Wahlkontaktkörpern und dem Schleifbereich keine Kontakt- bzw. Leiterbahn auf dem Schleifbereich durch den Abrieb des Schleifkontakts aufgebaut wird, wird die Berührungsbahn bzw. werden die Berührungsbahnen des Schleifkontakts/der Schleifkontakte bewusst unterbrochen. Dies erfolgt erfindungsgemäß beispielsweise durch Einbringen einer Rippe oder einer Nut in den Schleifbereich, welche die Schleifbahn kreuzt. Durch eine derartige Ausgestaltung des Schleifbereiches zwischen zwei Wahlkontaktkörpern oder dem Wahlkontaktkörper und einer nicht leitenden Grundstellung des Schleifkontaktes wird die Durchgängigkeit der Schleifbahn vermieden. Damit kann durch Ablagerungen, welche metallischer Abrieb der Schleifkontakte und/oder Verschmutzungen sein können, keine elektrische Verbindung zwischen den Wahlkontaktkörpern hergestellt werden.Thus, in the operation of the switch by frequent switching back and forth between the Wahlkontaktkörpern and the grinding area no contact or trace on the grinding area is built up by the abrasion of the sliding contact, the contact track or the contact tracks of the sliding contact / the sliding contacts are deliberately interrupted. This is done according to the invention for example by introducing a rib or a groove in the grinding area, which crosses the slideway. Such a design of the grinding area between two selector contact bodies or the selector contact body and a non-conductive basic position of the sliding contact the continuity of the grinding path is avoided. This can be produced by deposits, which may be metallic abrasion of the sliding contacts and / or dirt, no electrical connection between the selector contact bodies.
Durch Anordnung einer Rippe quer zur Bewegungsrichtung der Schleifkontakte wird erreicht, dass im Bereich des Übergangs der Schleiffläche zur Oberfläche der Rippe der Schleifkontakt die Rippe im Anbindungsbereich an die Schleiffläche, also am Fuß der Rippe, während des Passierens des Schleifkontakts über die Rippe nicht berührt. Der Schleifkontakt kann aufgrund seiner balligen Form, mit einem Radius, der größer ist als der Radius der Anbindungsstelle der Rippe an die Schleiffläche, nicht bis in den Grund der Rippe vordringen. Dadurch entsteht beiderseits der Rippe jeweils eine Unterbrechung in der Schleifbahn, in welchen Abrieb und/oder Verunreinigungen keine leitende Verbindung herstellen können. Eine Ausbildung einer leitenden Verbindung zwischen den Wahlkontaktkörper über die Rippe hinweg ist somit nicht möglich. Gleichzeitig ändert sich der Auflagepunkt des Schleifkontaktes beim Überqueren der Rippe kontinuierlich, so dass ein eventueller Abrieb gleichmäßig auf der kompletten Oberfläche des Schleifkontakts erfolgt.By arranging a rib transversely to the direction of movement of the sliding contacts, it is achieved that in the region of the transition of the grinding surface to the surface of the rib, the sliding contact does not touch the rib in the connection region to the grinding surface, ie at the foot of the rib, during the passage of the sliding contact over the rib. The sliding contact can not penetrate to the bottom of the rib due to its crowned shape, with a radius which is greater than the radius of the point of attachment of the rib to the grinding surface. This creates on both sides of the rib in each case an interruption in the grinding path, in which abrasion and / or impurities can not make a conductive connection. A formation of a conductive connection between the election contact body over the rib away is thus not possible. At the same time, the contact point of the sliding contact changes continuously as it traverses the rib so that possible abrasion occurs uniformly over the entire surface of the sliding contact.
Auch wenn die Form der Rippe weitestgehend frei bestimmt werden kann, so muss dennoch darauf geachtet werden, dass der Schleifkontakt und die Rippe so gestaltet sind, dass im Moment in dem der Schleifkontakt die Rippe berührt und noch nicht von dem Schleifbereich abgehoben wird, ein Spalt zwischen Schleifkontakt und Rippengrund bestehen bleibt, in welchen der Schleifkontakt nicht eindringen kann. Dieser Spalt unterbricht, wie oben schon angedeutet, einerseits die Schleifspur zwischen den Wahlkontaktkörpern und andererseits kann sich in diesem Spalt Schmierfett bzw. -öl ansammeln und so die Schmierung des Schleifkontakts verbessern. Eingesetztes Schmierfett wird sich bevorzugt im Rippengrund ansammeln und sich längs der Rippe verteilen, so dass bei jedem Hinwegstreichen des Schleifkontakts Schmieröl bzw. - fett zur Schmierung des Schleifkontaktes aufgenommen werden kann.Although the shape of the rib can be determined largely freely, it must nevertheless be ensured that the sliding contact and the rib are designed so that at the moment in which the sliding contact touches the rib and not yet lifted from the grinding area, a gap remains between sliding contact and ribbed bottom, in which the sliding contact can not penetrate. This gap interrupts, as already indicated above, on the one hand, the sliding track between the selector contact bodies and on the other hand can accumulate in this gap grease or oil and thus improve the lubrication of the sliding contact. Lubricating grease used will preferably accumulate in the bottom of the rib and spread along the rib, so that lubricating oil or grease can be absorbed to lubricate the sliding contact each time the sliding contact is brushed away.
Was im Vorangegangenen am Beispiel einer Rippe im Schaltbereich des Gehäuses geschildert wurde, gilt analog bzw. entsprechend ebenfalls für Nuten, die in den Schleifbereich eingebracht werden. Anders als bei der Ausführung mit aus dem Schleifbereich vorstehenden Rippen, bei der die Schleifbahn an beiden Seiten der Rippe unterbrochen wird, wird die Schleifbahn bei der Einbringung einer Nut in den Schleifbereich nur einmal unterbrochen. Im Nutgrund, welcher durch den Schleifkontakt nicht berührt wird, findet keine mechanische Berührung durch den Schleifkontakt statt, und somit kann auch hier keine Verschmelzung des Abriebs zu einer Leiterbahn erfolgen. Die Form der Nut kann beliebig gewählt werden, solange gewährleistet ist, dass der Schleifkontakt nicht bis in den Nutgrund vordringen kann.What was described above in the example of a rib in the switching area of the housing, applies analogously or correspondingly also for grooves that are introduced into the grinding area. Unlike the embodiment with protruding from the grinding area ribs, in which the grinding path is interrupted on both sides of the rib, the grinding path is interrupted only once when introducing a groove in the grinding area. In the groove base, which is not touched by the sliding contact, no mechanical contact takes place through the sliding contact, and thus can not be made a merger of the abrasion to a conductor track here. The shape of the groove can be chosen arbitrarily, as long as it is ensured that the sliding contact can not penetrate into the groove base.
Wie auch bei der Ausführung von rippenartigen Hervorwölbungen oder Ausbuchtungen aus dem Schleifbereich, sammelt sich in nutartigen Einbuchtungen das verwendete Schmieröl oder -fett. Somit wirkt die Nut für die eingesetzten Schmiermittel ebenfalls als eine Art Vorratsbehälter.As with the execution of rib-like bulges or protrusions from the grinding area, accumulates in groove-like recesses, the lubricating oil or grease used. Thus, the groove for the lubricant used also acts as a kind of reservoir.
Durch das Einbringen von Nuten und Rippen erreicht man zudem als weiteren Vorteil eine taktile Rückkopplung, die auftritt, wenn der Schleifkontakt die Nut bzw. die Rippe überfährt. Dies kann zur Erkennung eines Schaltzustandes, beispielsweise einer Grundstellung des Schalters, ausgenutzt werden. Bei Ausführung einer Einschnürung ist dies besonders einfach, da die Schleifkontakte aufgrund ihrer Anpresskraft leicht in die Einbuchtung gedrückt werden und eine Erhöhung des Bewegungswiderstandes zur Weiterbewegung der Schleifkontakte erkennbar ist.By introducing grooves and ribs is achieved as a further advantage tactile feedback that occurs when the sliding contact over the groove or the rib. This can be used to detect a switching state, for example, a basic position of the switch. When performing a constriction, this is particularly easy because the sliding contacts are pressed easily into the indentation due to their contact force and an increase in the resistance to movement for further movement of the sliding contacts can be seen.
Damit ist beispielsweise eine Mitte-Null-Stellung detektierbar, welche eine Grundstellung für den Schalter sein kann. Aber auch durch Hintereinanderanordnung zweier Rippen lässt sich ein derartiger Effekt erzielen. Hier kann durch das Überqueren des Schleifkontakts der ersten Rippe die taktile Rückkopplung ausgenutzt werden, um nach Verlassen des Wahlkontakts eine nicht leitende Position des Schleifkontaktes zu bestimmen und umgekehrt nach Verlassen des Schleifbereichs eine leitende Verbindung auf einem Wahlkontaktkörper erkannt werden. Somit kann auf einfache und zuverlässige Weise eine Schalterstellung mit leitender elektrischer Verbindung oder eine Stellung mit nichtleitender Verbindung bestimmt werden. So ist beispielsweise in einer sogenannten Mitte-Null-Stellung der nicht leitende Schleifbereich, welcher auch als Isolator bezeichnet wird, zwischen zwei Leitenden Bereichen angeordnet, die jeweils einem Wahlkontaktkörper zugeordnet sind oder auch nur zu einem einzigen Kontaktkörper (Wahlkontaktkörper) gehören. In der Mitte-Null-Stellung befindet sich der Schleifkontakt des Kontaktgebers auf dem Schleifbereich des Isolators, so dass im Schalter kein Durchgang stattfindet.Thus, for example, a center-zero position is detectable, which may be a basic position for the switch. But even by sequential arrangement of two ribs can achieve such an effect. Here, the tactile feedback can be utilized by crossing the sliding contact of the first rib to determine after leaving the selection contact a non-conductive position of the sliding contact and vice versa after leaving the Abrasive area a conductive connection can be detected on a dial contact body. Thus, a switch position with conductive electrical connection or a position with non-conductive connection can be determined in a simple and reliable manner. Thus, for example, in a so-called center-zero position, the non-conductive grinding region, which is also referred to as an insulator, arranged between two conductive regions, each associated with a selective contact body or even belong to a single contact body (selector contact body). In the center zero position, the sliding contact of the contactor is located on the grinding area of the insulator, so that no passage takes place in the switch.
Mit der Erfindung lassen sich alle bekannten Schaltstellungen bzw. Schaltzustände verwirklichen, wie mit Schaltern, welche aus dem Stand der Technik bekannt sind, insbesondere kann der Schleifkontakt aus einer Stellung auf einem nicht leitenden Schleifbereich in einen leitenden Kontaktbereich auf einem (Wahl-)Kontaktkörper gebracht werden und von dort weiter auf einen anderen Schleifbereich, bspw. eines anderen Isolators, oder zurück auf den (Ausgangs-)Isolator bewegt werden. Der erfindungsgemäße Schalter kann ebenfalls aus einer Schalt- oder Grundstellung, in der der Kontaktgeber mit zumindest einem Schleifkontakt mit einem Wahlkontaktkörper in leitender Verbindung steht, und somit ein Durchgang durch den Schalter stattfindet, über einen Schleifbereich hinweg, während dessen kein Durchgang durch den Schalter stattfindet, zu einem anderen Wahlkontaktkörper bewegt werden, wobei dann wieder ein Durchgang durch den Schalter stattfindet. Dabei ist der Kontaktgeber mit einer anderen Kontaktstelle mit einem für die Wahlkontaktkörper gemeinsamen Kontaktkörper, welcher üblicherweise den Massekontakt des Schalters darstellt, in ständig elektrisch leitender Verbindung.With the invention, all known switching positions or switching states can be realized, as with switches, which are known from the prior art, in particular, the sliding contact can be brought from a position on a non-conductive grinding area in a conductive contact region on a (optional) contact body be moved from there to another grinding area, for example, another insulator, or back to the (output) insulator. The switch according to the invention can also be made of a switching or normal position, in which the contactor is in conductive connection with at least one sliding contact with a selective contact body, and thus a passage through the switch takes place over a grinding range, during which no passage through the switch takes place be moved to another dial contact body, in which case again takes place a passage through the switch. In this case, the contactor with a different contact point with a common contact body for the contact body, which usually represents the ground contact of the switch, in constantly electrically conductive connection.
Durch Einbringen zumindest einer Rippe oder Nut kann der Umschaltpunkt von einem Wahlkontaktkörper auf einen anderen Wahlkontaktkörper genau definiert werden, da zusätzlich zu der in der Ebene der Schleifbereiche schleifend verlaufenden Bewegung eine von der Schleiffläche weg gerichtete Bewegung hinzukommt, welche einen definierten Schaltpunkt zulässt. Durch diese zusätzliche Bewegung lässt sich auch erreichen, dass die Abstände zwischen den Wahlkontaktkörpern optimal gestaltet werden können, um so ein schnelleres und exakteres Schalten zu ermöglichen. Zudem bleibt der Schaltweg unabhängig von der Anzahl der Schaltzyklen weitestgehend konstant. Eine Verkürzung des Totwegs aufgrund der Abflachung des anfänglich balligen Schleifkontakts und der damit verbundenen Vergrößerung der Berührungsfläche erfolgt bei der erfindungsgemäßen Schalterausführung praktisch nicht.By introducing at least one rib or groove, the switching point can be precisely defined from one selection contact body to another elective contact body, since in addition to the movement running in the plane of the grinding regions, a movement directed away from the grinding surface is added, which permits a defined switching point. This additional movement can also be achieved that the distances between the selector contact bodies can be optimally designed so as to enable a faster and more accurate switching. In addition, the switching path remains largely constant regardless of the number of switching cycles. A shortening of the dead travel due to the flattening of the initially crowned sliding contact and the associated increase in the contact surface is practically not in the switch design according to the invention.
Hinsichtlich der Gestaltung des Kontaktgebers mit seinen Schleifkontakten und dessen Bewegungsmöglichkeiten, d.h. der Schleifkontakte auf der Schleifbahn im Schleifbereich ist eine Vielzahl von Möglichkeiten umsetzbar, welche alle von dem Erfindungsgedanken umfasst werden, solange die Bewegungsbahn/Schleifbahn, die der Schleifkontakt im elektrisch nicht leitenden Schleifbereich hinterlässt, durch Einbringen einer Erhöhung oder Vertiefung unterbrochen wird, so dass Zonen in dem Schleifbereich und/oder auf der Oberfläche der Erhöhung oder Vertiefung vorhanden sind, die der Schleifkontakt nicht berührt. Da es der Erfindungsgedanke zulässt bereits existierende elektrische Schleifschalterkonzepte gemäß dem Erfindungsgedanken abzuändern, sind solche abgeänderten elektrischen Schleifkontaktschalter ebenfalls von dem Erfindungsgedanken umfasst.With regard to the design of the contactor with its sliding contacts and its movement possibilities, ie the sliding contacts on the grinding path in the grinding area a variety of possibilities can be implemented, which are all encompassed by the inventive concept, as long as the trajectory / sliding track, the sliding contact in electrically non-conductive Abrasive region is interrupted by introducing an elevation or depression, so that zones in the grinding area and / or on the surface of the elevation or depression are present, which does not touch the sliding contact. Since the idea of the invention allows already existing electrical circuit breaker concepts to change according to the concept of the invention, such modified electrical contact switches are also included in the inventive concept.
Die Erfindung ist ebenfalls nicht auf Schalter begrenzt, welche zwischen zwei Wahlkontaktkörper mit dazwischen angeordneten elektrisch nicht leitendem Schleifbereich hin- und herschalten oder von einem elektrisch nicht leitenden Schleifbereich in einen elektrisch leitenden Bereich schalten und umgekehrt, sondern ist es für den Fachmann leicht ersichtlich, dass der Erfindungsgedanke auch in rotatorischen Schleifkontaktschaltern, Potentiometern oder Drehschaltern angewendet werden kann. Das gleiche gilt für Linearschalter mit einer rein linearen Bewegung des Kontaktgebers bzw. der Schleifkontakte von einer ersten Stellung zu einer zweiten Stellung. Selbstredend sind Schalter, die eine Kombination aus linearen und rotatorischen Bewegungen der Schleifkontakte ausführen und die dabei Erhebungen oder Vertiefungen in nicht leitenden Bereichen überfahren, ebenfalls von dem Erfindungsgedanken umfasst.The invention is likewise not limited to switches which switch back and forth between two selector contact bodies with an electrically nonconductive grinding region arranged therebetween or switch from an electrically non-conductive grinding region into an electrically conductive region and vice versa, but it is readily apparent to the person skilled in the art that the concept of the invention can also be applied in rotary sliding contact switches, potentiometers or rotary switches. The same applies to linear switches with a purely linear movement of the contactor or the sliding contacts from a first position to a second position. Of course, switches that perform a combination of linear and rotary movements of the sliding contacts and thereby run over elevations or depressions in non-conductive areas, also included in the inventive concept.
Auch die Art und Weise, wie der Kontaktgeber von einer Kontaktstelle auf einem Wahlkontaktkörper über die Barriere auf dem Schleifbereich des Gehäuses hinweg zu einer anderen Kontaktstelle eines Wahlkontaktkörpers gebracht wird, ist von dem Erfindungsgedanken in allen möglichen Ausführungsformen umfasst. Dabei spielt es keine Rolle, ob der Kontaktgeber elastisch vorgespannt oder elastisch in eine vorgespannte Stellung gebracht wird oder einfach nur ohne elastische Verformung von einem Bereich in den nächsten Bereich geschoben, gezogen oder gedreht wird. In all diesen Fällen ist der Erfindungsgedanke auch dann verwirklicht, wenn zwischen zwei Schaltstellungen für einen Schleifkontakt ein geometrisches Hindernis, z. B. in Form einer Rippe oder einer Nut eingebracht ist, welches die Schleifbahn unterbricht, damit zwischen zwei benachbarten Bereichen keine leitende Verbindung durch die Schleifbahn aufgebaut wird.The manner in which the contactor is brought from a contact point on a selector contact body over the barrier on the grinding region of the housing to another contact point of a selector contact body is included in the invention in all possible embodiments. It does not matter whether the contactor is elastically biased or elastically brought into a biased position or simply pushed without elastic deformation of a range in the next area, pulled or rotated. In all these cases, the inventive concept is also realized when between two switch positions for a sliding contact a geometric obstacle, for. B. is introduced in the form of a rib or a groove which interrupts the slideway, so that between two adjacent areas no conductive connection is established by the slideway.
Die Erfindung und Weiterbildungen der Erfindung werden im Folgenden anhand der zeichnerischen Darstellungen eines Ausführungsbeispiels noch näher erläutert. In den Zeichnungen zeigen:
- Figur 1
- eine räumliche Darstellung eines erfindungsgemäßen Schalters mit abgenommenem Schalter.
Figur 2- eine vergrößerte Detailansicht aus
Figur 1 , in der der Bereich zwischen zwei Schaltstellungen dargestellt ist. - Figur 3
- eine Seitenansicht eines Schleifbereiches zwischen zwei Wahlkontaktkörpern mit einer eingebrachten Nut.
Figur 4- eine Seitenansicht eines Schleifbereiches zwischen zwei Wahlkontaktkörpern mit einer eingebrachten Rippe.
- Figur 5
- eine Seitenansicht eines Schleifbereiches zwischen zwei Wahlkontaktkörpern mit zwei eingebrachten Rippen.
- FIG. 1
- a spatial representation of a switch according to the invention with removed switch.
- FIG. 2
- an enlarged detail view
FIG. 1 , in which the area between two switching positions is shown. - FIG. 3
- a side view of a grinding area between two Wahlkontaktkörpern with an introduced groove.
- FIG. 4
- a side view of a grinding area between two Wahlkontaktkörpern with an inserted rib.
- FIG. 5
- a side view of a grinding area between two Wahlkontaktkörpern with two introduced ribs.
Wie im Detail aus
Wie besonders gut aus den
In
Bei Weiterführung der Kontaktfinger in Pfeilrichtung lässt sich aus
In einem weiteren Ausführungsbeispiel, das in
Der Schleifbereich 20 ist in diesem Ausführungsbeispiel ein Teil des Gehäuses, d. h. die Wahlkontaktkörper sind so in das Gehäuse eingebettet, dass der Bereich 20 zwischen ihnen durch Gehäusematerial aufgefüllt ist. Dies kann bspw. im Spritzgießvorgang des Gehäuses verwirklicht werden, wobei darauf geachtet werden muss, dass die Kontaktflächen 11 der Wahlkontaktkörper nicht mit Spritzgussmaterial verdeckt werden. Gleichzeitig mit dem Einbetten der Wahlkontaktkörper in das Gehäuse kann auch die Rippe 16 bzw. die Nut 16 ausgebildet werden, die in
Die Ausführungsform gemäß
Das Prinzip der Unterbrechung der Schleifbahnen durch berührungslose Zonen 18 ist hier am Beispiel eines NO-/NC-Schalters dargestellt, was aber nur eine von einer Vielfalt von Ausführungsformen darstellt.The principle of interruption of the slide tracks by
- 22
- Gehäusecasing
- 44
- gemeinsamer Kontaktkörpercommon contact body
- 66
- Kontaktgebercontactor
- 88th
- Schleifkontaktsliding contact
- 1010
- WahlkontaktkörperSelective terminal
- 1111
- Kontaktflächecontact area
- 1212
- Schleifbahnsliding track
- 1414
- Betätigungsgliedactuator
- 1616
- Rippe/NutGroove rib /
- 1818
- berührungsfreie Zonenon-contact zone
- 2020
- Schleifbereichgrinding area
- 2222
- Schleiffingersanding finger
Claims (10)
dass Zonen (18) in der Schleifbahn ausgebildet sind, die von dem Schleifkontakt (8) während des Überfahrens des Schleifbereichs (20) nicht berührt werden.Electric sliding contact switch comprising a housing (21) in which are arranged:
in that zones (18) are formed in the grinding path which are not touched by the sliding contact (8) during the travel of the grinding area (20).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007048581A DE102007048581B3 (en) | 2007-10-10 | 2007-10-10 | Electrical sliding contact switch, for micro to sub-miniature switches, has sections of the sliding path not touching the sliding contact to reduce wear |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2048676A2 true EP2048676A2 (en) | 2009-04-15 |
EP2048676A3 EP2048676A3 (en) | 2011-10-12 |
Family
ID=39688526
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08105499A Withdrawn EP2048676A3 (en) | 2007-10-10 | 2008-10-07 | Sliding contact switch |
Country Status (4)
Country | Link |
---|---|
US (1) | US8124896B2 (en) |
EP (1) | EP2048676A3 (en) |
CN (1) | CN101430977B (en) |
DE (1) | DE102007048581B3 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102014225666A1 (en) | 2014-12-12 | 2016-06-16 | Zf Friedrichshafen Ag | Contactor for a sliding contact switch, sliding contact switch and method for checking a contactor |
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WO2010032814A1 (en) * | 2008-09-22 | 2010-03-25 | アルプス電気株式会社 | Switching device and method for assembling a snap action mechanism |
JP5521513B2 (en) * | 2009-11-30 | 2014-06-18 | パナソニック株式会社 | Turning direction indicator |
DE102010003151A1 (en) * | 2010-03-23 | 2011-09-29 | Zf Friedrichshafen Ag | induction generator |
DE102010003152A1 (en) * | 2010-03-23 | 2011-09-29 | Zf Friedrichshafen Ag | radio switch |
DE102010029979A1 (en) * | 2010-06-11 | 2011-12-15 | Zf Friedrichshafen Ag | Wiper switch |
US8440922B2 (en) | 2010-09-08 | 2013-05-14 | Apple Inc. | Water inhibiting slide switch |
DE102013203466A1 (en) * | 2013-03-01 | 2014-09-04 | Zf Friedrichshafen Ag | switch |
JP6119340B2 (en) * | 2013-03-19 | 2017-04-26 | オムロン株式会社 | switch |
CN103268828B (en) * | 2013-05-29 | 2015-01-21 | 上海沪工汽车电器有限公司 | Automotive two-way selection type rocker switch |
CN104299801B (en) * | 2013-07-18 | 2016-08-10 | 新巨企业股份有限公司 | Promote the multi-instruction switch of electric insulation |
JP2017162671A (en) * | 2016-03-09 | 2017-09-14 | オムロン株式会社 | Limit switch device |
CN106599670A (en) * | 2016-12-25 | 2017-04-26 | 长沙修恒信息科技有限公司 | Modular multifunctional host and system |
JP6406376B2 (en) * | 2017-03-13 | 2018-10-17 | オムロン株式会社 | switch |
CN108766796B (en) * | 2018-05-09 | 2020-12-18 | 淄博职业学院 | Electric automatization switch |
CN110060897B (en) * | 2019-05-23 | 2024-04-05 | 科都电气股份有限公司 | Integrated switch |
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2008
- 2008-10-07 EP EP08105499A patent/EP2048676A3/en not_active Withdrawn
- 2008-10-09 US US12/287,465 patent/US8124896B2/en not_active Expired - Fee Related
- 2008-10-10 CN CN2008101778575A patent/CN101430977B/en not_active Expired - Fee Related
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JP2001256857A (en) * | 2000-03-14 | 2001-09-21 | Toshiba Video Products Japan Co Ltd | Mode detecting switch of magnetic recording/reproducing device |
EP1764813A1 (en) | 2005-09-16 | 2007-03-21 | Cherry GmbH | Electrical switch |
DE102006011930B3 (en) | 2006-03-15 | 2007-02-22 | Cherry Gmbh | Electric switch, such as subminiature switch, has operating member which pivots contact rocker against action of actuating spring into position in which it is connected to selective contact body |
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DE102014225666A1 (en) | 2014-12-12 | 2016-06-16 | Zf Friedrichshafen Ag | Contactor for a sliding contact switch, sliding contact switch and method for checking a contactor |
Also Published As
Publication number | Publication date |
---|---|
DE102007048581B3 (en) | 2008-09-18 |
CN101430977B (en) | 2012-09-05 |
US20090095609A1 (en) | 2009-04-16 |
CN101430977A (en) | 2009-05-13 |
EP2048676A3 (en) | 2011-10-12 |
US8124896B2 (en) | 2012-02-28 |
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