EP4053869B1 - Switch, in particular a snap switch - Google Patents
Switch, in particular a snap switch Download PDFInfo
- Publication number
- EP4053869B1 EP4053869B1 EP22159422.9A EP22159422A EP4053869B1 EP 4053869 B1 EP4053869 B1 EP 4053869B1 EP 22159422 A EP22159422 A EP 22159422A EP 4053869 B1 EP4053869 B1 EP 4053869B1
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- EP
- European Patent Office
- Prior art keywords
- contact
- switch
- unit
- drive unit
- contact bridge
- 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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- 230000005540 biological transmission Effects 0.000 claims description 9
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/58—Electric connections to or between contacts; Terminals
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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
- H01H13/02—Details
- H01H13/26—Snap-action arrangements depending upon deformation of elastic members
- H01H13/36—Snap-action arrangements depending upon deformation of elastic members using flexing of blade springs
- H01H13/46—Snap-action arrangements depending upon deformation of elastic members using flexing of blade springs two separate blade springs forming a toggle
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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
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/20—Bridging 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
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/20—Bridging contacts
- H01H1/2025—Bridging contacts comprising two-parallel bridges
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
Definitions
- the present invention relates to a switch, designed as a snap switch, with at least one fixed contact pair, a contact bridge unit with at least one contact bridge for connecting two fixed contacts of the at least one fixed contact pair, a drive unit for moving the contact bridge unit arranged thereon along a switching direction from a first switching position to a second switching position, an actuating unit for actuating the drive unit and a translation element for translating an actuating movement introduced by the actuating unit into a drive movement of the drive.
- Switches in particular snap switches, are widely known in the art, which have a contact bridge, an actuating unit and a drive unit, e.g. DE1954449U , US4401867 , FR2641642 .
- the GB1114630 shows an electrical high-speed switch in which the force triggering the switching movement is transmitted from an actuating element with limited pivoting to a drive.
- the object of the present invention is to eliminate the disadvantages known from the prior art.
- the object is in particular to create a switch which prevents the step-by-step connection of the contact bridge to the fixed contact pairs and/or reduces the contact resistance.
- a switch designed as a snap switch, with at least one fixed contact pair, a contact bridge unit with at least one contact bridge for connecting two fixed contacts of the at least one fixed contact pair, a drive unit for moving the contact bridge unit arranged thereon along a switching direction from a first switching position to a second switching position, an actuating unit for actuating the drive unit and a translation element for translating an actuating movement introduced by the actuating unit into a drive movement of the drive unit.
- a fixed contact pair is understood to mean two fixed contacts that are spaced apart from one another transversely to the switching direction.
- the drive unit can thus move between the spaced apart fixed contacts of the at least one fixed contact pair in the switching direction.
- the fixed contacts are preferably arranged essentially on a plane normal to the switching direction.
- In order to establish an electrical connection between the two fixed contacts of the at least one fixed contact pair they are connected to one another by means of the at least one contact bridge of the contact bridge unit.
- the area where the contact bridge rests on the respective fixed contact is called the connection area.
- To connect the at least one fixed contact pair the contact bridge unit is switched to the first switching position by means of the drive unit.
- To break the connection between the fixed contacts of the at least one fixed contact pair the contact bridge unit is switched to the second switching position by means of the drive unit.
- the contact bridge unit is arranged on the drive unit.
- the drive unit is connected to the actuating unit by means of the transmission element. If the actuating unit is moved or actuated from the outside, the drive unit is moved by means of the transmission element.
- a transmission element is therefore an element which translates or transmits the actuating movement introduced by the actuating unit to the drive unit, whereby the latter moves in its drive movement.
- the switch is designed as a snap switch and the actuating movement of the actuating unit is translated by means of the translation element into a sudden drive movement of the drive unit, in particular the opposite one.
- the drive unit is moved suddenly from the first switching position to the second switching position and/or vice versa. This results in a short switching time between the first switching position, in which the at least one fixed contact pair is connected, and the second switching position, in which the at least one fixed contact pair is separated.
- the drive unit is laterally limited in its drive movement by means of a limitation such that the drive unit can be pivoted to a limited extent during the drive movement in a transverse direction which runs transversely to the switching direction.
- Pivotable is to be understood here as the property of the drive unit to move in addition to the linear displacement in the switching direction such that a pivoting angle of the drive unit changes with respect to the switching direction.
- the pivoting angle is thus the angle that the drive unit, in particular its center plane, spans with the switching direction.
- the actuating movement introduced by the actuating unit, which runs parallel to the switching direction, is thus transmitted to the drive unit in such a way that the latter pivots to a limited extent in its drive movement from the first switching position to the second switching position. Due to the arrangement of the contact bridge unit on the drive unit, the at least one contact bridge is also pivoted during the drive movement and/or subsequently thereto.
- the fixed contacts are designed to be stationary in both the switching direction and the transverse direction. After each switching of the contact bridge unit from the first switching position to the second switching position or vice versa, the connection area between the contact bridge and the fixed contact can therefore shift. Since this is not a guided but a random pivoting, the connection area in a subsequent switching process usually deviates at least partially from the connection area of the previous switching process.
- the drive unit and thus the contact bridge can pivot to a limited extent after switching, i.e. after moving from the first switching position to the second switching position or vice versa.
- the resulting frictional force on the connection area cleans it regularly. This prevents an increase in the contact resistance over the operating period.
- the limitation limits the pivoting in the transverse direction, i.e. transverse to the switching direction.
- the pivoting angle of the drive unit with the contact bridge unit is thus limited. This ensures that the contact bridge reliably forms a connection area with the two fixed contacts of the at least one fixed contact pair.
- the contact bridge thus connects the two fixed contacts of the at least one fixed contact pair even when the drive unit is pivoted to the maximum.
- the switch has two fixed contact pairs spaced apart from one another in the switching direction.
- the switch thus has a first fixed contact pair and a second fixed contact pair, which are spaced apart from one another in the switching direction.
- the contact bridge unit is inserted into the first Switching position switched.
- the contact bridge unit is switched to the second switching position by means of the drive unit.
- the switch is thus designed as a changeover switch which connects the fixed contacts of the first fixed contact pair in the first switching position and the fixed contacts of the second fixed contact pair in the second switching position.
- the contact bridge unit has only one contact bridge, it is designed in such a way that both the first fixed contact pair in the first switching position and the second fixed contact pair in the second switching position can be connected. If the contact bridge unit has two contact bridges, a first contact bridge in the first switching position of the contact bridge unit connects the first fixed contact pair and a second contact bridge in the second switching position of the contact bridge unit connects the second fixed contact pair.
- the limitation has at least two limiting elements arranged in the transverse direction on opposite sides of the drive unit for limiting the drive movement on both sides. In this way, the pivoting or twisting of the drive unit and thus of the contact bridge unit can be limited in both the positive and negative transverse direction.
- the non-pivoted state of the drive unit in the non-pivoted state of the drive unit, at least one of the limiting elements is spaced apart from the drive unit by a distance and/or at least one of the limiting elements has at least one bevel and/or a rounding.
- the non-pivoted state of the drive unit is understood to be the state in which the drive unit, in particular its center plane, is arranged parallel to the switching direction.
- the pivoting angle is thus equal to zero or a zero angle.
- the distance between one of the limiting elements and the drive unit extends in the transverse direction. If If the drive unit is pivoted, its extension in the transverse direction changes. The greater the pivot angle of the drive unit, the further it extends in the transverse direction between the limiting elements.
- the drive unit can thus be pivoted until it rests on one of the limiting elements on its opposite sides or the distance is zero.
- the drive unit can thus be pivoted within the distance to the respective limiting element.
- this chamfer and/or rounding is preferably arranged on the area of the at least one limiting element facing the drive unit. This allows the drive unit to be pivoted via the chamfer and/or rounding. The rounding can also lead to a more homogeneous pivoting of the drive unit, since it is constantly supported on the rounding when pivoting.
- the distance is no more than 1 mm, preferably no more than 0.5 mm. This ensures that the pivoting can be achieved with a small pivoting angle. Due to the small pivoting angle, the movement of the contact bridge in the transverse direction is also small. This means that the connection area can be reliably formed. In addition, pivoting with a small pivoting angle can have the advantage that the drive unit reacts more dynamically in its drive movement, as the resulting vibrations are reduced.
- the switch has at least one linear guide for linearly guiding the actuating movement of the actuating unit parallel to the switching direction, wherein the linear guide preferably has at least two guide areas spaced apart from one another in the switching direction.
- the actuating unit is thus linearly guided along the switching direction This prevents the actuating unit from tilting during its actuating movement. If the drive unit is pivoted during its drive movement, the linear actuating movement of the actuating unit can be ensured by means of the linear guide.
- the limit and/or at least one of the limiting elements is arranged in the switching direction between the two fixed contact pairs that are spaced apart from one another. As already described above, the limit and/or at least one of the limiting elements ensures that the contact bridge forms a connection area with the two fixed contacts of one of the fixed contact pairs. If the limit and/or at least one of the limiting elements is arranged in the switching direction between the two fixed contact pairs, they can be spaced in the switching direction in a similar way to the two fixed contact pairs. This can ensure that the connection area is reliably formed both in the first switching position on the first fixed contact pair and in the second switching position on the second fixed contact pair.
- the limit and/or at least one of the limiting elements is designed in such a way that the contact bridge unit can be guided past it in its drive movement.
- the at least one contact bridge of the contact bridge unit extends in the transverse direction, preferably beyond the drive unit, in order to connect the fixed contacts of one of the fixed contact pairs, which are spaced apart in the transverse direction. This also ensures that the drive unit can be moved between the first and second switching positions.
- at least one of the limiting elements can be spaced apart from the drive unit. This ensures that the switch is as compact as possible.
- the limit and/or at least one of the limiting elements is formed as one piece with the housing, wherein the limit (10) and/or the at least one limiting element (11) is integrated into the housing (14) as a bulge and/or elevation.
- the housing accommodates the fixed components of the switch, in particular the two fixed contact pairs. Additionally or alternatively, the linear guide of the actuating unit can be arranged on the housing. Such a design can ensure a simple construction of the switch, since the components of the switch are each supported, guided and/or limited indirectly and/or directly by the housing.
- At least one of the fixed contacts and/or the at least one contact bridge is angled, particularly in the area of a contact area and/or connection area.
- the respective contact areas of the fixed contacts and the contact bridge form the connection area when they abut one another.
- the connection area is, as already described, the area where the contact bridge abuts the respective fixed contact.
- the fixed contacts of each fixed contact pair and the at least one contact bridge extend essentially in the transverse direction. If both fixed contacts and/or the at least one contact bridge are angled, they are V-shaped or vice versa V-shaped.
- a contact force acts on the respective contact areas when the contact bridge hits and/or abuts the fixed contacts.
- This contact force acts on angled Fixed contacts and/or the angled contact bridge, each partially in the switching direction and in the transverse direction. This allows the contact bridge to be pressed against the fixed contacts both in the switching direction and in the transverse direction, whereby the connection areas are reliably formed.
- the at least one angled fixed contact and/or the at least one angled contact bridge can increase the friction between them, whereby the connection area is cleaned, resulting in a constantly low contact resistance.
- the at least one contact bridge is designed to be flexible at least in sections.
- the contact bridge is designed to be flexible in such a way that when it is placed on one of the fixed contacts on the connection area, the contact force is increased. This can further improve the connection between the contact bridge and the respective fixed contact.
- the contact bridge unit has two contact bridges, with a tensioning element, in particular a tension spring, preferably arranged between the two contact bridges.
- a tensioning element in particular a tension spring
- Each of the contact bridges is designed to connect the fixed contacts of different fixed contact pairs.
- the contact areas of the two contact bridges are preferably directed away from each other.
- the tensioning element is arranged between the two contact bridges, the tensioning element is preferably the pre-tensioned tension spring, which presses the two contact bridges away from each other as a compression spring.
- the contact bridges are arranged within the drive unit in such a way that the contact bridge unit is tensioned in the drive unit due to the tensioning element.
- the contact bridge unit can also be prevented from slipping out of the drive unit by means of centering areas that correspond to one another.
- the centering areas are tensioned using the tensioning element. It is also advantageous if the at least one contact bridge has at least two at least partially independent contact legs and/or contact areas.
- the contact area is understood to be the area that can establish the connection area from the contact bridge to at least one of the fixed contacts.
- the contact area is preferably arranged on the contact leg.
- the contact legs are designed in such a way that they can ensure the electrical connection between the two fixed contacts of a fixed contact pair.
- the at least partially independent design of the contact legs can ensure the at least partially independent connection between the two fixed contacts of one of the fixed contact pairs.
- the two at least partially independent contact areas establish an independent contact with one of the fixed contacts of a fixed contact pair.
- the contact legs electrically connect the contact areas, which each form a connection area on different fixed contacts of one of the fixed contact pairs. This means that if one of the contact legs and/or one of the contact areas fails, the other contact leg and/or the other contact area can establish the connection.
- the at least one contact bridge has at least one insulating region for insulating the at least partially independent contact legs and/or contact regions.
- the insulating region can be designed as a distance between the two at least partially independent contact legs and/or contact regions. This allows the at least partially independent contact legs and/or contact regions to be electrically insulated from one another. This allows a redundant connection to be created between the fixed contacts of the at least one fixed contact pair.
- the insulating region designed as a distance allows the at least The flexible design of the contact bridges can be improved in sections, thereby increasing the contact force when contacting one of the fixed contacts.
- Figure 1 shows a schematic front view of a sectioned switch 1 with a contact bridge unit 2 in a first switching position according to an embodiment.
- the switch 1 has a first fixed contact pair 3 and a second fixed contact pair 3', which are spaced apart from one another in a switching direction SR.
- Each of the fixed contact pairs 3, 3' has two fixed contacts 4 spaced apart from one another in a transverse direction QR, which runs transversely to the switching direction SR.
- the contact bridge unit arranged in the first switching position connects 2 with a first contact bridge 5 the fixed contacts 4 of the first fixed contact pair 3.
- the area where the first contact bridge 5 rests on the fixed contacts 4 is called connection area 6.
- a second contact bridge 5 ⁇ which in a second switching position would connect the two fixed contacts 4 of the second fixed contact pair 3', forms in the Figure 1 shown position does not form any connection areas 6.
- the second contact bridge 5' and the second fixed contact pair 3' are therefore not connected in the first switching position shown here.
- both the contact bridges 5, 5' and all fixed contacts 4 are angled.
- the contact bridge unit 2 is arranged on a drive unit 7.
- the drive unit 7 has a recess in which the contact bridge unit 2 is clamped by means of a clamping element 16.
- the clamping element 16 is designed as a pre-tensioned compression spring that presses the two contact bridges 5, 5' away from each other.
- the recess of the drive unit 7 and the respective contact bridge 5, 5' each have a corresponding centering area 17 to prevent the contact bridge unit 2 from slipping out.
- the drive unit 7 is connected to an actuating unit 9 by means of a transmission element 8. If the actuating unit 9 is actuated from the outside or pressed against the switching direction SR, the actuating movement of the actuating unit 9 is translated into a drive movement of the drive unit 7 by means of the transmission element 8.
- the transmission element 8 is designed in two parts and is arranged in a notch in the drive unit 7 and the actuating unit 9.
- the drive unit 7 is designed to be pivotable in the transverse direction QR.
- a pivot angle ⁇ which the drive unit 7 or a central axis ME of the drive unit 7 spans with the switching direction SR, can therefore change during and/or after the movement of the drive unit 7.
- the switch 1 has a limit 10.
- the limit 10 is formed from two limiting elements 11, which are arranged on opposite sides of the drive unit 7 in the transverse direction QR. In this way, the drive movement of the drive unit 7 can be limited on both sides.
- Each of the limiting elements 11 is spaced apart from the drive unit 7 by a distance A.
- one of the limiting elements 11 has a curve 12 and the other limiting element 11 has a bevel 13.
- any combination of distance A, curve(s) 12 and/or bevel(s) 13 can be used to limit the pivotability of the drive unit 7.
- the drive unit 7 shown here does not rest against any of the limiting elements 11 in the first switching position. It is therefore conceivable that the drive unit 7 is pivoted further or less in its pivot angle ⁇ or in the negative transverse direction QR during and/or after a new movement.
- the first contact bridge 5 can thus form different connection areas 6 with the fixed contacts 4.
- the limiting elements 11 are arranged on a housing 14 in such a way that the contact bridge unit 2 can be guided past them in its drive movement.
- the design that can be guided past them is ensured in that the limiting elements 11 do not extend over the entire thickness of the switch 1 in a thickness direction DR, which runs normal to the blade direction.
- the contact bridge unit 2 can be arranged over at least one of the limiting elements 11, at least briefly during the drive movement in the thickness direction DR, as shown here in particular by means of the second contact bridge 5'. Since, in contrast to the contact bridge unit 2, the drive unit 7 with the limiting elements 11 can be brought into contact, this extends in the thickness direction DR beyond the contact bridge unit 2 or at least beyond one of the contact bridges 5, 5'.
- the actuating unit 9 is guided linearly by means of a linear guide which has two guide regions 15, 15' spaced apart from one another in the switching direction SR.
- the first guide region 15 is designed as a through hole for the actuating unit 9 on the housing 14.
- the actuating unit 9 can guide along the transverse direction QR and the thickness direction DR.
- the second guide region 15' is formed on opposite sides in the interior of the housing 14.
- the second guide region 15' can guide the actuating unit 9 at least in the transverse direction QR.
- the linear guide designed here therefore only allows the actuating unit 9 to move parallel to the switching direction SR in its actuating movement.
- Figure 2 shows a schematic front view of a cut switch 1 with a contact bridge unit 2 in a second switching position according to the embodiment of Figure 1 .
- the drive unit 7 is designed to be non-pivoted.
- the center plane ME of the drive unit 7 thus runs parallel to the switching direction SR.
- the drive unit 7 can also be designed similarly to Figure 1 be pivoted along a pivot angle ⁇ .
- the actuating unit 9 In order to maintain the second switching position of the contact bridge unit 2 or the drive unit 7 shown here, the actuating unit 9 must remain loaded by the actuating force.
- a return spring 18 moves a return force which counteracts the actuating force. If the actuating force is reduced, the actuating unit 9 is moved in the switching direction SR due to the return force.
- the transmission element 8 By means of the transmission element 8, the drive unit 7 is moved in the opposite direction and thus against the switching direction SR.
- switch 1 in the illustrated embodiment is the Figures 1 and 2 If it is a snap switch, the actuating movement of the actuating unit 9 is translated by means of the translation element 8 into a sudden drive movement of the drive unit 7. Thus, the drive unit 7 can be moved abruptly from the first switching position to the second switching position and vice versa, even with a slowly moving actuating unit 9.
- FIG 3 is a schematic plan view of a contact bridge 5, 5' according to a further embodiment, wherein the contact bridge 5, 5' also in the embodiment according to the Figures 1 and 2 can be used.
- the contact bridge 5, 5' has four partially independent contact legs 19.
- Each of the contact legs 19 has at least one contact area 20.
- Each of the Contact areas 20 are designed in such a way that, as in the embodiment of the Figure 2 shown, which can establish the connection areas 6 from the contact bridge 5' to one of the fixed contacts 4 and thereby connect the fixed contact pair 3'.
- the contact bridge 5, 5' is electrically connected in the area of the centering area 17.
- the independent design of the contact legs 19 and the contact areas 20 can be ensured by means of at least one insulating area 21.
- the insulating region 21 is designed as an opening. The opening also allows the contact legs 19 to move independently of one another.
- the contact bridge 5, 5' is designed to be flexible, in particular due to the partially independent contact legs 19.
- FIG 4 is a schematic front view of a cut switch 1 with a contact bridge unit 2 in a second switching position according to an alternative embodiment.
- the switch 1 here has only one fixed contact pair 3.
- the contact bridge unit 2 has only one contact bridge 5 for connecting the two fixed contacts 4 of the fixed contact pair 3.
- the drive unit 7 with the switching bridge unit 2 is designed to be non-pivoted.
- the center plane ME of the drive unit 7 thus runs parallel to the switching direction SR.
- the drive unit 7 can also be designed similarly to Figure 1 be pivoted along a pivot angle ⁇ . If the drive unit 7 is brought into the first switching position by means of the actuating unit 9 or the transmission element 8, the connection between the fixed contacts 4 of the fixed contact pair 3 is separated. The drive unit 7 and thus The contact bridge unit 2 can also be pivoted both in the first switching position and in the second switching position.
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- Electromagnetism (AREA)
- Push-Button Switches (AREA)
- Slide Switches (AREA)
- Contacts (AREA)
Description
Die vorliegende Erfindung betrifft einen Schalter, ausgebildet als Schnappschalter, mit wenigstens einem Festkontaktpaar, einer Kontaktbrückeneinheit mit wenigstens einer Kontaktbrücke zum Verbinden zweier Festkontakte des wenigstens einen Festkontaktpaars, einer Antriebseinheit zum Bewegen der daran angeordneten Kontaktbrückeneinheit entlang einer Schaltrichtung von einer ersten Schaltposition in eine zweite Schaltposition, einer Betätigungseinheit zum Betätigen der Antriebseinheit und einem Übersetzungselement zum Übersetzen einer durch die Betätigungseinheit eingebrachten Betätigungsbewegung in eine Antriebsbewegung des Antriebs.The present invention relates to a switch, designed as a snap switch, with at least one fixed contact pair, a contact bridge unit with at least one contact bridge for connecting two fixed contacts of the at least one fixed contact pair, a drive unit for moving the contact bridge unit arranged thereon along a switching direction from a first switching position to a second switching position, an actuating unit for actuating the drive unit and a translation element for translating an actuating movement introduced by the actuating unit into a drive movement of the drive.
Schalter, insbesondere Schnappschalter, sind im Stand der Technik vielfach bekannt, welche eine Kontaktbrücke, eine Betätigungseinheit und eine Antriebseinheit aufweisen, z.B. aus
Derartige Schalter haben jedoch den Nachteil, dass die am Antrieb angeordnete Kontaktbrücke stets mittels gleichbleibendem Verbindungsbereich an den Festkontaktpaaren anliegt, wodurch sich der Kontaktwiderstand erhöhen kann. Dadurch kann die Funktion des Schalters beeinträchtigt sein. Aufgabe der vorliegenden Erfindung ist es, die aus dem Stand der Technik bekannten Nachteile zu beseitigen. Aufgabe ist es insbesondere, einen Schalter zu schaffen, der das schrittweise Verbinden der Kontaktbrücke mit den Festkontaktpaaren verhindert und/oder den Kontaktwiderstand verringert.However, such switches have the disadvantage that the contact bridge arranged on the drive always rests against the fixed contact pairs by means of a constant connection area, which can increase the contact resistance. This can impair the function of the switch. The object of the present invention is to eliminate the disadvantages known from the prior art. The object is in particular to create a switch which prevents the step-by-step connection of the contact bridge to the fixed contact pairs and/or reduces the contact resistance.
Die Aufgabe wird gelöst durch einen Schalter mit den Merkmalen des unabhängigen Patentanspruchs.The problem is solved by a switch having the features of the independent patent claim.
Vorgeschlagen wird ein Schalter, ausgebildet als Schnappschalter, mit wenigstens einem Festkontaktpaar, einer Kontaktbrückeneinheit mit wenigstens einer Kontaktbrücke zum Verbinden zweier Festkontakte des wenigstens einen Festkontaktpaars, einer Antriebseinheit zum Bewegen der daran angeordneten Kontaktbrückeneinheit entlang einer Schaltrichtung von einer ersten Schaltposition in eine zweite Schaltposition, einer Betätigungseinheit zum Betätigen der Antriebseinheit und einem Übersetzungselement zum Übersetzen einer durch die Betätigungseinheit eingebrachten Betätigungsbewegung in eine Antriebsbewegung der Antriebseinheit.Proposed is a switch, designed as a snap switch, with at least one fixed contact pair, a contact bridge unit with at least one contact bridge for connecting two fixed contacts of the at least one fixed contact pair, a drive unit for moving the contact bridge unit arranged thereon along a switching direction from a first switching position to a second switching position, an actuating unit for actuating the drive unit and a translation element for translating an actuating movement introduced by the actuating unit into a drive movement of the drive unit.
Als Festkontaktpaar sind zwei Festkontakte zu verstehen, die quer zur Schaltrichtung voneinander beabstandet sind. Somit kann sich die Antriebseinheit zwischen den voneinander beabstandeten Festkontakten des wenigstens einen Festkontaktpaars in Schaltrichtung hindurchbewegen. Vorzugsweise sind die Festkontakte dabei im Wesentlichen auf einer Ebene normal zur Schaltrichtung angeordnet. Um eine elektrische Verbindung zwischen den beiden Festkontakten des wenigstens einen Festkontaktpaars herzustellen, werden diese mittels der wenigstens einen Kontaktbrücke der Kontaktbrückeneinheit miteinander verbunden. Der Bereich, an dem die Kontaktbrücke am jeweiligen Festkontakt anliegt, wird Verbindungsbereich genannt. Zum Verbinden des wenigstens einen Festkontaktpaars wird die Kontaktbrückeneinheit mittels der Antriebseinheit in die erste Schaltposition geschaltet. Zum Trennen der Verbindung zwischen den Festkontakten des wenigstens einen Festkontaktpaars wird die Kontaktbrückeneinheit mittels der Antriebseinheit in die zweite Schaltposition geschaltet.A fixed contact pair is understood to mean two fixed contacts that are spaced apart from one another transversely to the switching direction. The drive unit can thus move between the spaced apart fixed contacts of the at least one fixed contact pair in the switching direction. The fixed contacts are preferably arranged essentially on a plane normal to the switching direction. In order to establish an electrical connection between the two fixed contacts of the at least one fixed contact pair, they are connected to one another by means of the at least one contact bridge of the contact bridge unit. The area where the contact bridge rests on the respective fixed contact is called the connection area. To connect the at least one fixed contact pair, the contact bridge unit is switched to the first switching position by means of the drive unit. To break the connection between the fixed contacts of the at least one fixed contact pair, the contact bridge unit is switched to the second switching position by means of the drive unit.
Um von der ersten in die zweite Schaltposition zu schalten, ist die Kontaktbrückeneinheit an der Antriebseinheit angeordnet. Die Antriebseinheit ist dabei mittels dem Übersetzungselement mit der Betätigungseinheit verbunden. Wird die Betätigungseinheit bewegt bzw. von außen betätigt, so wird mittels des Übersetzungselements die Antriebseinheit bewegt. Als Übersetzungselement ist somit ein Element zu verstehen, welches die durch die Betätigungseinheit eingebrachte Betätigungsbewegung auf die Antriebseinheit übersetzt bzw. überträgt, wodurch sich diese in ihrer Antriebsbewegung bewegt.In order to switch from the first to the second switching position, the contact bridge unit is arranged on the drive unit. The drive unit is connected to the actuating unit by means of the transmission element. If the actuating unit is moved or actuated from the outside, the drive unit is moved by means of the transmission element. As a transmission element is therefore an element which translates or transmits the actuating movement introduced by the actuating unit to the drive unit, whereby the latter moves in its drive movement.
Der Schalter ist als Schnappschalter ausgebildet und die Betätigungsbewegung der Betätigungseinheit wird mittels des Übersetzungselements in eine, insbesondere entgegengesetzte, schlagartige Antriebsbewegung der Antriebseinheit übersetzt. Dadurch wird die Antriebseinheit schlagartig von der ersten Schaltstellung in die zweite Schaltstellung und/oder umgekehrt bewegt. Dies hat eine geringe Umschaltzeit zwischen der ersten Schaltstellung, in welcher das wenigstens eine Festkontaktpaar verbunden ist, und der zweiten Schaltstellung, in welcher das wenigstens eine Festkontaktpaar getrennt ist, zur Folge.The switch is designed as a snap switch and the actuating movement of the actuating unit is translated by means of the translation element into a sudden drive movement of the drive unit, in particular the opposite one. As a result, the drive unit is moved suddenly from the first switching position to the second switching position and/or vice versa. This results in a short switching time between the first switching position, in which the at least one fixed contact pair is connected, and the second switching position, in which the at least one fixed contact pair is separated.
Erfindungsgemäß ist die Antriebseinheit in ihrer Antriebsbewegung seitlich mittels einer Begrenzung derart begrenzt, dass die Antriebseinheit bei der Antriebsbewegung in einer Querrichtung, welche quer zur Schaltrichtung verläuft, begrenzt verschwenkbar ist. Als verschwenkbar ist hierbei die Eigenschaft der Antriebseinheit zu verstehen, sich zusätzlich zur linearen Verschiebung in Schaltrichtung derart zu bewegen, dass sich ein Verschwenkungswinkel der Antriebseinheit zur Schaltrichtung verändert. Der Verschwenkungswinkel ist somit der Winkel, den die Antriebseinheit, insbesondere deren Mittelebene, mit der Schaltrichtung aufspannt. Die durch die Betätigungseinheit eingebrachte Betätigungsbewegung, welche parallel zur Schaltrichtung verläuft, wird somit auf die Antriebseinheit derart übertragen, dass diese sich in ihrer Antriebsbewegung von der ersten Schaltposition in die zweite Schaltposition begrenzt verschwenken. Aufgrund der Anordnung der Kontaktbrückeneinheit an der Antriebseinheit wird ebenso die wenigstens eine Kontaktbrücke während der Antriebsbewegung und/oder daran anschließend verschwenkt.According to the invention, the drive unit is laterally limited in its drive movement by means of a limitation such that the drive unit can be pivoted to a limited extent during the drive movement in a transverse direction which runs transversely to the switching direction. Pivotable is to be understood here as the property of the drive unit to move in addition to the linear displacement in the switching direction such that a pivoting angle of the drive unit changes with respect to the switching direction. The pivoting angle is thus the angle that the drive unit, in particular its center plane, spans with the switching direction. The actuating movement introduced by the actuating unit, which runs parallel to the switching direction, is thus transmitted to the drive unit in such a way that the latter pivots to a limited extent in its drive movement from the first switching position to the second switching position. Due to the arrangement of the contact bridge unit on the drive unit, the at least one contact bridge is also pivoted during the drive movement and/or subsequently thereto.
Die Festkontakte sind sowohl in Schaltrichtung als auch in Querrichtung stillstehend ausgebildet sind. Nach jedem Schalten der Kontaktbrückeneinheit von der ersten Schaltposition in die zweite Schaltposition bzw. umgekehrt kann sich somit der Verbindungsbereich zwischen Kontaktbrücke und Festkontakt verschieben. Da es sich hierbei nicht um eine geführte, sondern um eine zufällige Verschwenkung handelt, weicht bei einem nachfolgenden Schaltvorgang der Verbindungsbereich in der Regel vom Verbindungsbereich des vorhergehenden Schaltvorgangs zumindest teilweise ab.The fixed contacts are designed to be stationary in both the switching direction and the transverse direction. After each switching of the contact bridge unit from the first switching position to the second switching position or vice versa, the connection area between the contact bridge and the fixed contact can therefore shift. Since this is not a guided but a random pivoting, the connection area in a subsequent switching process usually deviates at least partially from the connection area of the previous switching process.
Zusätzlich oder alternativ kann sich die Antriebseinheit und dadurch die Kontaktbrücke im Anschluss an das Schalten, also nach dem Bewegen von der ersten Schaltposition in die zweite Schaltposition oder umgekehrt, begrenzt verschwenken. Dadurch ändert sich der Verbindungsbereich während die Kontaktbrücke an den Festkontakten des wenigstens einen Festkontaktpaars anliegt. Durch die dadurch entstehende Reibkraft am Verbindungsbereich wird dieser regelmäßig gesäubert. Dies verhindert eine Erhöhung des Kontaktwiderstands über die Betriebsdauer.Additionally or alternatively, the drive unit and thus the contact bridge can pivot to a limited extent after switching, i.e. after moving from the first switching position to the second switching position or vice versa. This changes the connection area while the contact bridge rests on the fixed contacts of at least one fixed contact pair. The resulting frictional force on the connection area cleans it regularly. This prevents an increase in the contact resistance over the operating period.
Die Begrenzung begrenzt dabei die Verschwenkung in Querrichtung, d.h. quer zur Schaltrichtung. Der Verschwenkungswinkel der Antriebseinheit mit der Kontaktbrückeneinheit ist somit begrenzt. Dadurch kann sichergestellt werden, dass die Kontaktbrücke mit den beiden Festkontakten des wenigstens einen Festkontaktpaars zuverlässig jeweils einen Verbindungsbereich ausbildet. Die Kontaktbrücke verbindet somit die beiden Festkontakte des wenigstens einen Festkontaktpaars auch bei maximaler Verschwenkung der Antriebseinheit.The limitation limits the pivoting in the transverse direction, i.e. transverse to the switching direction. The pivoting angle of the drive unit with the contact bridge unit is thus limited. This ensures that the contact bridge reliably forms a connection area with the two fixed contacts of the at least one fixed contact pair. The contact bridge thus connects the two fixed contacts of the at least one fixed contact pair even when the drive unit is pivoted to the maximum.
Vorteilhaft ist es, wenn der Schalter zwei voneinander in Schaltrichtung beabstandete Festkontaktpaare aufweist. Somit weist der Schalter ein erstes Festkontaktpaar und ein zweites Festkontaktpaar auf, welche in Schaltrichtung voneinander beabstandet sind. Zum Verbinden des ersten Festkontaktpaars wird die Kontaktbrückeneinheit mittels der Antriebseinheit in die erste Schaltposition geschaltet. Zum Verbinden des zweiten Festkontaktpaars wird die Kontaktbrückeneinheit mittels der Antriebseinheit in die zweite Schaltposition geschaltet. Der Schalter ist somit als Wechselschalter ausgebildet, der in der ersten Schaltposition die Festkontakte des ersten Festkontaktpaars und in der zweiten Schaltposition die Festkontakte des zweiten Festkontaktpaars miteinander verbindet.It is advantageous if the switch has two fixed contact pairs spaced apart from one another in the switching direction. The switch thus has a first fixed contact pair and a second fixed contact pair, which are spaced apart from one another in the switching direction. To connect the first fixed contact pair, the contact bridge unit is inserted into the first Switching position switched. To connect the second fixed contact pair, the contact bridge unit is switched to the second switching position by means of the drive unit. The switch is thus designed as a changeover switch which connects the fixed contacts of the first fixed contact pair in the first switching position and the fixed contacts of the second fixed contact pair in the second switching position.
Weist die Kontaktbrückeneinheit lediglich die eine Kontaktbrücke auf, so ist diese derart ausgebildet, dass sowohl das erste Festkontaktpaar in der ersten Schaltposition als auch das zweite Festkontaktpaar in der zweiten Schaltposition verbindbar sind. Weist die Kontaktbrückeneinheit zwei Kontaktbrücken auf, so verbindet eine erste Kontaktbrücke in der ersten Schaltposition der Kontaktbrückeneinheit das erste Festkontaktpaar und eine zweite Kontaktbrücke in der zweiten Schaltposition der Kontaktbrückeneinheit das zweite Festkontaktpaar.If the contact bridge unit has only one contact bridge, it is designed in such a way that both the first fixed contact pair in the first switching position and the second fixed contact pair in the second switching position can be connected. If the contact bridge unit has two contact bridges, a first contact bridge in the first switching position of the contact bridge unit connects the first fixed contact pair and a second contact bridge in the second switching position of the contact bridge unit connects the second fixed contact pair.
Zudem weist als eine Alternative die Begrenzung wenigstens zwei in Querrichtung an gegenüberliegenden Seiten der Antriebseinheit angeordnete Begrenzungselemente zum beidseitigen Begrenzen der Antriebsbewegung auf. So kann das Verschwenken bzw. Verdrehen der Antriebseinheit und somit der Kontaktbrückeneinheit sowohl in positiver, als auch in negativer Querrichtung begrenzt werden.In addition, as an alternative, the limitation has at least two limiting elements arranged in the transverse direction on opposite sides of the drive unit for limiting the drive movement on both sides. In this way, the pivoting or twisting of the drive unit and thus of the contact bridge unit can be limited in both the positive and negative transverse direction.
In einer Variante ist im unverschwenkten Zustand der Antriebseinheit wenigstens eines der Begrenzungselemente von der Antriebseinheit mittels eines Abstands beabstandet und/oder weist wenigstens eines der Begrenzungselemente wenigstens eine Fase und/oder eine Rundung auf. Als unverschwenkter Zustand der Antriebseinheit ist dabei der Zustand zu verstehen, in der die Antriebseinheit, insbesondere deren Mittelebene, parallel zur Schaltrichtung angeordnet ist. Der Verschwenkungswinkel ist somit gleich null bzw. ein Nullwinkel. Der Abstand zwischen einem der Begrenzungselemente und Antriebseinheit erstreckt sich dabei in Querrichtung. Wird die Antriebseinheit verschwenkt, so verändert sich deren Erstreckung in Querrichtung. Umso größer der Verschwenkungswinkel der Antriebseinheit, desto weiter erstreckt sich diese in Querrichtung zwischen den Begrenzungselementen. Die Antriebseinheit ist somit soweit verschwenkbar, bis diese an ihren gegenüberliegenden Seiten an einem der Begrenzungselemente anliegt bzw. der Abstand Null ist. So kann die Antriebseinheit innerhalb des Abstand zum jeweiligen Begrenzungselement verschwenkt werden.In one variant, in the non-pivoted state of the drive unit, at least one of the limiting elements is spaced apart from the drive unit by a distance and/or at least one of the limiting elements has at least one bevel and/or a rounding. The non-pivoted state of the drive unit is understood to be the state in which the drive unit, in particular its center plane, is arranged parallel to the switching direction. The pivoting angle is thus equal to zero or a zero angle. The distance between one of the limiting elements and the drive unit extends in the transverse direction. If If the drive unit is pivoted, its extension in the transverse direction changes. The greater the pivot angle of the drive unit, the further it extends in the transverse direction between the limiting elements. The drive unit can thus be pivoted until it rests on one of the limiting elements on its opposite sides or the distance is zero. The drive unit can thus be pivoted within the distance to the respective limiting element.
Weist wenigstens eines der Begrenzungselemente zusätzlich oder alternativ die Fase und/oder Rundung auf, so ist diese Fase und/oder Rundung vorzugsweise an dem der Antriebseinheit zugewandten Bereich des wenigstens einen Begrenzungselements angeordnet. Dadurch kann die Antriebseinheit über die Fase und/oder Rundung verschwenkt werden. Die Rundung kann dabei zusätzlich zu einem homogeneren Verschwenken der Antriebseinheit führen, da diese beim Verschwenken konstant an der Rundung abgestützt wird.If at least one of the limiting elements additionally or alternatively has the chamfer and/or rounding, this chamfer and/or rounding is preferably arranged on the area of the at least one limiting element facing the drive unit. This allows the drive unit to be pivoted via the chamfer and/or rounding. The rounding can also lead to a more homogeneous pivoting of the drive unit, since it is constantly supported on the rounding when pivoting.
Vorteilhaft ist es zudem, wenn der Abstand höchstens 1 mm, vorteilhafterweise höchstens 0,5 mm, beträgt. Hierdurch kann die Verschwenkung mit einem kleinen Verschwenkungswinkel gewährleistet werden. Aufgrund des kleinen Verschwenkungswinkels ist die Bewegung der Kontaktbrücke in Querrichtung ebenfalls klein. Dadurch kann der Verbindungsbereich zuverlässig ausgebildet werden. Zudem kann die Verschwenkung mit einem kleinen Verschwenkungswinkel den Vorteil haben, dass die Antriebseinheit in ihrer Antriebsbewegung dynamischer reagiert, da entstehende Schwingungen reduziert werden.It is also advantageous if the distance is no more than 1 mm, preferably no more than 0.5 mm. This ensures that the pivoting can be achieved with a small pivoting angle. Due to the small pivoting angle, the movement of the contact bridge in the transverse direction is also small. This means that the connection area can be reliably formed. In addition, pivoting with a small pivoting angle can have the advantage that the drive unit reacts more dynamically in its drive movement, as the resulting vibrations are reduced.
Auch ist es vorteilhaft, wenn der Schalter wenigstens eine Linearführung zum linearen Führen der Betätigungsbewegung der Betätigungseinheit parallel zur Schaltrichtung aufweist, wobei die Linearführung vorzugsweise wenigstens zwei in Schaltrichtung voneinander beabstandete Führungsbereiche aufweist. Die Betätigungseinheit wird somit linear entlang der Schaltrichtung bewegt. Dies verhindert ein Verkanten der Betätigungseinheit in ihrer Betätigungsbewegung. Wird die Antriebseinheit also in ihrer Antriebsbewegung verschwenkt, so kann mittels der Linearführung die lineare Betätigungsbewegung der Betätigungseinheit gewährleistet werden.It is also advantageous if the switch has at least one linear guide for linearly guiding the actuating movement of the actuating unit parallel to the switching direction, wherein the linear guide preferably has at least two guide areas spaced apart from one another in the switching direction. The actuating unit is thus linearly guided along the switching direction This prevents the actuating unit from tilting during its actuating movement. If the drive unit is pivoted during its drive movement, the linear actuating movement of the actuating unit can be ensured by means of the linear guide.
Ebenso bringt es Vorteile mit sich, wenn die Begrenzung und/oder wenigstens eines der Begrenzungselemente in Schaltrichtung zwischen den zwei voneinander beabstandeten Festkontaktpaaren angeordnet ist. Wie vorstehend bereits beschrieben, gewährleistet die Begrenzung und/oder wenigstens eines der Begrenzungselemente, dass die Kontaktbrücke mit den beiden Festkontakten eines der Festkontaktpaare jeweils einen Verbindungsbereich ausbildet. Ist die Begrenzung und/oder wenigstens eines der Begrenzungselemente in Schaltrichtung zwischen den beiden Festkontaktpaaren angeordnet, so können diese in Schaltrichtung ähnlich zu den beiden Festkontaktpaaren beabstandet sein. Dadurch kann sichergestellt werden, dass der Verbindungsbereich sowohl in der ersten Schaltposition am ersten Festkontaktpaar, als auch in der zweiten Schaltposition am zweiten Festkontaktpaar zuverlässig ausgebildet wird.It also has advantages if the limit and/or at least one of the limiting elements is arranged in the switching direction between the two fixed contact pairs that are spaced apart from one another. As already described above, the limit and/or at least one of the limiting elements ensures that the contact bridge forms a connection area with the two fixed contacts of one of the fixed contact pairs. If the limit and/or at least one of the limiting elements is arranged in the switching direction between the two fixed contact pairs, they can be spaced in the switching direction in a similar way to the two fixed contact pairs. This can ensure that the connection area is reliably formed both in the first switching position on the first fixed contact pair and in the second switching position on the second fixed contact pair.
Auch ist es von Vorteil, wenn die Begrenzung und/oder wenigstens eines der Begrenzungselemente derart ausgebildet ist, dass die Kontaktbrückeneinheit in ihrer Antriebsbewegung daran vorbeiführbar ist. Die wenigstens eine Kontaktbrücke der Kontaktbrückeneinheit erstreckt sich in Querrichtung vorzugsweise über die Antriebseinheit hinaus, um so die in Querrichtung beabstandeten Festkontakte eines der Festkontaktpaare zu verbinden. So kann weiterhin das Bewegen der Antriebseinheit zwischen der ersten und der zweiten Schaltposition gewährleistet werden. Darüber hinaus kann so auch bei einer Anordnung der Begrenzung zwischen den beiden Festkontaktpaaren wenigstens eines der Begrenzungselemente mit dem Abstand zur Antriebseinheit beabstandet sein. Dadurch kann eine möglichst kompakte Ausgestaltung des Schalters gewährleistet werden.It is also advantageous if the limit and/or at least one of the limiting elements is designed in such a way that the contact bridge unit can be guided past it in its drive movement. The at least one contact bridge of the contact bridge unit extends in the transverse direction, preferably beyond the drive unit, in order to connect the fixed contacts of one of the fixed contact pairs, which are spaced apart in the transverse direction. This also ensures that the drive unit can be moved between the first and second switching positions. In addition, even if the limit is arranged between the two fixed contact pairs, at least one of the limiting elements can be spaced apart from the drive unit. This ensures that the switch is as compact as possible.
Die Begrenzung und/oder wenigstens eines der Begrenzungselemente ist mit dem Gehäuse einteilig ausgebildet, wobei die Begrenzung (10) und/oder das wenigstens eine Begrenzungselement (11) als Ausbuchtung und/oder Erhöhung in das Gehäuse (14) integriert ist. Das Gehäuse nimmt hierbei die festen Bestandteile des Schalters, insbesondere die beiden Festkontaktpaare, auf. Zusätzlich oder alternativ kann die Linearführung der Betätigungseinheit am Gehäuse angeordnet sein. Durch eine derartige Ausgestaltung kann eine einfache Konstruktion des Schalters gewährleistet werden, da die Bestandteile des Schalters jeweils mittelbar und/oder unmittelbar durch das Gehäuse gelagert, geführt und/oder begrenzt werden.The limit and/or at least one of the limiting elements is formed as one piece with the housing, wherein the limit (10) and/or the at least one limiting element (11) is integrated into the housing (14) as a bulge and/or elevation. The housing accommodates the fixed components of the switch, in particular the two fixed contact pairs. Additionally or alternatively, the linear guide of the actuating unit can be arranged on the housing. Such a design can ensure a simple construction of the switch, since the components of the switch are each supported, guided and/or limited indirectly and/or directly by the housing.
Dadurch kann die Herstellung vereinfacht werden, da die Anzahl der Bauteile des Schalters reduziert ist.This simplifies manufacturing as the number of components in the switch is reduced.
Ebenso bringt es Vorteile mit sich, wenn wenigstens einer der Festkontakte und/oder die wenigstens eine Kontaktbrücke, insbesondere im Bereich eines Kontaktbereichs und/oder Verbindungsbereichs, abgewinkelt ausgebildet ist. Die jeweiligen Kontaktbereiche der Festkontakte und der Kontaktbrücke bilden, wenn diese aneinander anliegen, den Verbindungsbereich aus. Der Verbindungsbereich ist dabei, wie bereits beschrieben, der Bereich, an dem die Kontaktbrücke am jeweiligen Festkontakt anliegt. Die Festkontakte jedes Festkontaktpaars und die wenigstens eine Kontaktbrücke erstrecken sich im Wesentlichen in Querrichtung. Sind beide Festkontakte und/oder die wenigstens eine Kontaktbrücke abgewinkelt ausgebildet, so sind diese V-förmig oder umgekehrt V-förmig ausgebildet. Wird die wenigstens eine Kontaktbrücke beim Schalten von der ersten Schaltposition in die zweite Schaltposition und/oder umgekehrt zu den Festkontakten bewegt, so wirkt beim Auftreffen und/oder beim Anliegen der Kontaktbrücke auf die Festkontakte eine Anlagekraft auf die jeweiligen Kontaktbereiche ein. Diese Anlagekraft wirkt bei abgewinkelten Festkontakten und/oder bei der abgewinkelten Kontaktbrücke jeweils zum Teil in Schaltrichtung und in Querrichtung. Dadurch kann die Kontaktbrücke sowohl in Schaltrichtung, als auch in Querrichtung an die Festkontakte angedrückt werden, wodurch die Verbindungsbereiche zuverlässig ausgebildet werden. Zusätzlich oder alternativ kann durch den wenigstens einen abgewinkelten Festkontakt und/oder die wenigstens eine abgewinkelte Kontaktbrücke die Reibung zueinander vergrößert werden, wodurch der Verbindungsbereich gesäubert wird, resultierend in einem stets geringen Kontaktwiderstand.It also has advantages if at least one of the fixed contacts and/or the at least one contact bridge is angled, particularly in the area of a contact area and/or connection area. The respective contact areas of the fixed contacts and the contact bridge form the connection area when they abut one another. The connection area is, as already described, the area where the contact bridge abuts the respective fixed contact. The fixed contacts of each fixed contact pair and the at least one contact bridge extend essentially in the transverse direction. If both fixed contacts and/or the at least one contact bridge are angled, they are V-shaped or vice versa V-shaped. If the at least one contact bridge is moved from the first switching position to the second switching position and/or vice versa to the fixed contacts during switching, a contact force acts on the respective contact areas when the contact bridge hits and/or abuts the fixed contacts. This contact force acts on angled Fixed contacts and/or the angled contact bridge, each partially in the switching direction and in the transverse direction. This allows the contact bridge to be pressed against the fixed contacts both in the switching direction and in the transverse direction, whereby the connection areas are reliably formed. Additionally or alternatively, the at least one angled fixed contact and/or the at least one angled contact bridge can increase the friction between them, whereby the connection area is cleaned, resulting in a constantly low contact resistance.
Auch ist es vorteilhaft, wenn die wenigstens eine Kontaktbrücke zumindest abschnittsweise flexibel ausgebildet ist. Die Kontaktbrücke ist dabei derart flexibel ausgebildet, dass bei Anlage an einen der Festkontakte auf den Verbindungsbereich die Anlagekraft vergrößert wird. Dies kann die Verbindung zwischen der Kontaktbrücke und dem jeweiligen Festkontakt weiter verbessern.It is also advantageous if the at least one contact bridge is designed to be flexible at least in sections. The contact bridge is designed to be flexible in such a way that when it is placed on one of the fixed contacts on the connection area, the contact force is increased. This can further improve the connection between the contact bridge and the respective fixed contact.
Vorteilhaft ist es zudem, wenn die Kontaktbrückeneinheit zwei Kontaktbrücken aufweist, wobei vorzugsweise zwischen den beiden Kontaktbrücken ein Spannelement, insbesondere eine Spannfeder, angeordnet ist. Jede der Kontaktbrücken ist dabei zum Verbinden der Festkontakte unterschiedlicher Festkontaktpaare ausgebildet. Die Kontaktbereiche der zwei Kontaktbrücken sind dabei vorzugsweise voneinander weg gerichtet. Ist das Spannelement zwischen den beiden Kontaktbrücken angeordnet, so ist das Spannelement vorzugsweise die vorgespannte Spannfeder, die als Druckfeder die beiden Kontaktbrücken voneinander wegdrückt. Die Kontaktbrücken sind dabei derart innerhalb der Antriebseinheit angeordnet, dass aufgrund des Spannelements die Kontaktbrückeneinheit in der Antriebseinheit verspannt wird. Durch zueinander korrespondierende Zentrierbereiche kann ein Herausrutschen der Kontaktbrückeneinheit aus der Antriebseinheit zudem vermieden werden. Die Zentrierbereiche werden dabei mittels des Spannelements verspannt. Ebenso ist es vorteilhaft, wenn die wenigstens eine Kontaktbrücke wenigstens zwei zumindest teilweise voneinander unabhängige Kontaktschenkel und/oder Kontaktbereiche aufweist. Als Kontaktbereich ist dabei der Bereich zu verstehen, der den Verbindungsbereich von der Kontaktbrücke zu wenigstens einem der Festkontakte herstellen kann. Der Kontaktbereich ist hierbei vorzugsweise am Kontaktschenkel angeordnet. Die Kontaktschenkel sind dabei derart ausgebildet, dass sie die elektrische Verbindung zwischen den beiden Festkontakten eines Festkontaktpaars gewährleisten können. Die zumindest teilweise voneinander unabhängige Ausgestaltung der Kontaktschenkel kann dabei die zumindest teilweise voneinander unabhängige Verbindung zwischen den zwei Festkontakten eines der Festkontaktpaare gewährleisten. Hierfür stellen die zwei zumindest teilweise voneinander unabhängigen Kontaktbereiche einen unabhängigen Kontakt zu einem der Festkontakte eines Festkontaktpaars her. Die Kontaktschenkel verbinden dabei die Kontaktbereiche, die an unterschiedlichen Festkontakten eines der Festkontaktpaaren jeweils den einen Verbindungsbereich bilden, elektrisch miteinander. Dadurch kann bei Ausfall einer der Kontaktschenkel und/oder einer der Kontaktbereiche der andere Kontaktschenkel und/oder der andere Kontaktbereich die Verbindung herstellen.It is also advantageous if the contact bridge unit has two contact bridges, with a tensioning element, in particular a tension spring, preferably arranged between the two contact bridges. Each of the contact bridges is designed to connect the fixed contacts of different fixed contact pairs. The contact areas of the two contact bridges are preferably directed away from each other. If the tensioning element is arranged between the two contact bridges, the tensioning element is preferably the pre-tensioned tension spring, which presses the two contact bridges away from each other as a compression spring. The contact bridges are arranged within the drive unit in such a way that the contact bridge unit is tensioned in the drive unit due to the tensioning element. The contact bridge unit can also be prevented from slipping out of the drive unit by means of centering areas that correspond to one another. The centering areas are tensioned using the tensioning element. It is also advantageous if the at least one contact bridge has at least two at least partially independent contact legs and/or contact areas. The contact area is understood to be the area that can establish the connection area from the contact bridge to at least one of the fixed contacts. The contact area is preferably arranged on the contact leg. The contact legs are designed in such a way that they can ensure the electrical connection between the two fixed contacts of a fixed contact pair. The at least partially independent design of the contact legs can ensure the at least partially independent connection between the two fixed contacts of one of the fixed contact pairs. For this purpose, the two at least partially independent contact areas establish an independent contact with one of the fixed contacts of a fixed contact pair. The contact legs electrically connect the contact areas, which each form a connection area on different fixed contacts of one of the fixed contact pairs. This means that if one of the contact legs and/or one of the contact areas fails, the other contact leg and/or the other contact area can establish the connection.
Auch ist es vorteilhaft, wenn die wenigstens eine Kontaktbrücke wenigstens einen Isolierbereich zum Isolieren der zumindest teilweise voneinander unabhängigen Kontaktschenkel und/oder Kontaktbereiche aufweist. Der Isolierbereich kann dabei als Abstand zwischen den beiden zumindest teilweise voneinander unabhängigen Kontaktschenkeln und/oder Kontaktbereichen ausgebildet sein. Durch können die zumindest teilweise voneinander unabhängigen Kontaktschenkel und/oder Kontaktbereiche elektrisch voneinander isoliert werden. Dadurch kann eine redundante Verbindung zwischen den Festkontakten des wenigstens einen Festkontaktpaars geschaffen werden. Zudem kann durch den als Abstand ausgebildeten Isolierbereich die zumindest abschnittsweise flexible Ausgestaltung der Kontaktbrücken verbessert werden, wodurch die Anlagekraft bei Anlage an einen der Festkontakte vergrößert wird.It is also advantageous if the at least one contact bridge has at least one insulating region for insulating the at least partially independent contact legs and/or contact regions. The insulating region can be designed as a distance between the two at least partially independent contact legs and/or contact regions. This allows the at least partially independent contact legs and/or contact regions to be electrically insulated from one another. This allows a redundant connection to be created between the fixed contacts of the at least one fixed contact pair. In addition, the insulating region designed as a distance allows the at least The flexible design of the contact bridges can be improved in sections, thereby increasing the contact force when contacting one of the fixed contacts.
Weitere Vorteile der Erfindung sind in den nachfolgenden Ausführungsbeispielen beschrieben. Es zeigt:
Figur 1- eine schematische Vorderansicht eines geschnittenen Schalters mit einer Kontaktbrückeneinheit in einer ersten Schaltposition gemäß einem Ausführungsbeispiel,
Figur 2- eine schematische Vorderansicht eines geschnittenen Schalters mit einer Kontaktbrückeneinheit in einer zweiten Schaltposition gemäß einem
Ausführungsbeispiel dem Figur 1 , Figur 3- eine schematische Draufsicht einer Kontaktbrücke gemäß einem weiteren Ausführungsbeispiel, und
Figur 4- eine schematische Vorderansicht eines geschnittenen Schalters mit einer Kontaktbrückeneinheit in einer zweiten Schaltposition gemäß einem alternativen Ausführungsbeispiel.
- Figure 1
- a schematic front view of a sectioned switch with a contact bridge unit in a first switching position according to an embodiment,
- Figure 2
- a schematic front view of a cut switch with a contact bridge unit in a second switching position according to an embodiment of the
Figure 1 , - Figure 3
- a schematic plan view of a contact bridge according to another embodiment, and
- Figure 4
- a schematic front view of a sectioned switch with a contact bridge unit in a second switching position according to an alternative embodiment.
Die Kontaktbrückeneinheit 2 ist an einer Antriebseinheit 7 angeordnet. Hierfür weist die Antriebseinheit 7 eine Aussparung auf, in welche die Kontaktbrückeneinheit 2 mittels eines Spannelements 16 eingespannt ist. Das Spannelement 16 ist hierbei als vorgespannte Druckfeder ausgebildet, die die beiden Kontaktbrücken 5, 5' voneinander wegdrückt. Die Aussparung der Antriebseinheit 7 und die jeweilige Kontaktbrücke 5, 5' weisen jeweils einen korrespondierenden Zentrierbereich 17 auf, um ein Herausrutschen der Kontaktbrückeneinheit 2 zu verhindern.The
Die Antriebseinheit 7 ist mittels eines Übersetzungselements 8 mit einer Betätigungseinheit 9 verbunden. Wird die Betätigungseinheit 9 von außen betätigt bzw. entgegen der Schaltrichtung SR gedrückt, so wird mittels des Übersetzungselements 8 die Betätigungsbewegung der Betätigungseinheit 9 in eine Antriebsbewegung der Antriebseinheit 7 übersetzt. Im gezeigten Ausführungsbeispiel ist das Übersetzungselement 8 zweiteilig ausgebildet und jeweils in einer Einkerbung der Antriebseinheit 7 und der Betätigungseinheit 9 angeordnet. Die Antriebseinheit 7 ist dabei in Querrichtung QR verschwenkbar ausgebildet. Ein Verschwenkungswinkel α, den die Antriebseinheit 7 bzw. eine Mittelachse ME der Antriebseinheit 7 mit der Schaltrichtung SR aufspannt, kann sich somit während und/oder anschließend an das Bewegen der Antriebseinheit 7 verändern.The
Zum Begrenzen der verschwenkbar ausgebildeten Antriebseinheit 7 in Querrichtung QR weist der Schalter 1 eine Begrenzung 10 auf. Die Begrenzung 10 ist im gezeigten Ausführungsbeispiel aus zwei Begrenzungselementen 11 gebildet, welche in Querrichtung QR an gegenüberliegenden Seiten der Antriebseinheit 7 angeordnet sind. So kann die Antriebsbewegung der Antriebseinheit 7 beidseitig begrenzt werden. Jedes der Begrenzungselemente 11 ist hierbei mittels eines Abstands A von der Antriebseinheit 7 beabstandet. Zudem weist eines der Begrenzungselemente 11 eine Rundung 12 und das andere Begrenzungselement 11 eine Fase 13 auf. Ebenso können bei alternativen Ausführungsbeispielen eine beliebige Kombination aus Abstand A, Rundung(en) 12 und/oder Fase(n) 13 zur Begrenzung der Verschwenkbarkeit der Antriebseinheit 7 verwendet werden. Die hier dargestellte Antriebseinheit 7 liegt in der ersten Schaltposition an keinem der Begrenzungselemente 11 an. Somit ist es vorstellbar, dass die Antriebseinheit 7 während und/oder nach einer erneuten Bewegung in ihrem Verschwenkungswinkel α weiter oder weniger bzw. in negative Querrichtung QR verschwenkt wird. So kann die erste Kontaktbrücke 5 jeweils unterschiedliche Verbindungsbereiche 6 mit den Festkontakten 4 ausbilden.To limit the
Die Begrenzungselemente 11 sind hierbei derart an einem Gehäuse 14 angeordnet, dass die Kontaktbrückeneinheit 2 in ihrer Antriebsbewegung daran vorbeiführbar ist. Die vorbeiführbare Ausgestaltung wird hierbei dadurch gewährleistet, dass sich die Begrenzungselemente 11 in eine Dickenrichtung DR, welche normal zur Blattrichtung verläuft, nicht über die komplette Dicke des Schalters 1 erstrecken. Die Kontaktbrückeneinheit 2 kann dabei, wie hier insbesondere mittels der zweiten Kontaktbrücke 5' dargestellt, zumindest kurzzeitig während der Antriebsbewegung in Dickenrichtung DR über wenigstens einem der Begrenzungselemente 11 angeordnet sein. Da im Gegensatz zur Kontaktbrückeneinheit 2 die Antriebseinheit 7 mit den Begrenzungselementen 11 in Kontakt bringbar ist, erstreckt sich diese in Dickenrichtung DR über die Kontaktbrückeneinheit 2 bzw. zumindest über einer der Kontaktbrücken 5, 5' hinaus.The limiting elements 11 are arranged on a
Die Betätigungseinheit 9 ist mittels einer Linearführung, welche zwei voneinander in Schaltrichtung SR beabstandete Führungsbereiche 15, 15' aufweist, linear geführt. Der erste Führungsbereich 15 ist dabei als Durchgangsbohrung für die Betätigungseinheit 9 am Gehäuse 14 ausgebildet. Mittels diesem ersten Führungsbereich 15 kann die Betätigungseinheit 9 entlang der Querrichtung QR und der Dickenrichtung DR führen. Um eine ausreichende Linearführung zu gewährleisten, ist im gezeigten Ausführungsbeispiel der zweite Führungsbereich 15' an gegenüberliegenden Seiten im Innenraum des Gehäuses 14 ausgebildet. Der zweite Führungsbereich 15' kann dabei die Betätigungseinheit 9 wenigstens in Querrichtung QR führen. Die hier ausgebildete Linearführung erlaubt somit der Betätigungseinheit 9 in seiner Betätigungsbewegung lediglich eine Bewegung parallel zur Schaltrichtung SR.The
Wird die Betätigungseinheit 9 betätigt und somit im gezeigten Ausführungsbeispiel entgegen der Schaltrichtung SR mittels einer Betätigungskraft gedrückt, so wird die Antriebseinheit 7 mit der darin angeordneten Kontaktbrückeneinheit 2 von der in der
Bei den nachfolgenden Beschreibungen werden für Merkmale, die in ihrer Ausgestaltung und/oder Wirkweise identisch und/oder zumindest vergleichbar sind, gleiche Bezugszeichen verwendet. Sofern diese nicht nochmals detailliert erläutert werden, entspricht deren Ausgestaltung und/oder Wirkweise der Ausgestaltung und Wirkweise der vorstehend bereits beschriebenen Merkmale.In the following descriptions, the same reference symbols are used for features that are identical and/or at least comparable in their design and/or mode of operation. Unless these are explained in detail again, their design and/or mode of operation corresponds to the design and mode of operation of the features already described above.
Um die hier dargestellte zweite Schaltposition der Kontaktbrückeneinheit 2 bzw. der Antriebseinheit 7 zu halten, muss die Betätigungseinheit 9 mittels der Betätigungskraft belastet bleiben. Eine Rückstellfeder 18 bewegt hierbei eine Rückstellkraft, welche der Betätigungskraft entgegenwirkt. Wird die Betätigungskraft verringert, so wird aufgrund der Rückstellkraft die Betätigungseinheit 9 in Schaltrichtung SR bewegt. Mittels des Übersetzungselements 8 wird die Antriebseinheit 7 in entgegengesetzte Richtung und somit entgegen der Schaltrichtung SR bewegt.In order to maintain the second switching position of the
Da es sich beim Schalter 1 im dargestellten Ausführungsbeispiel der
In
Die unabhängige Ausgestaltung der Kontaktschenkel 19 und der Kontaktbereiche 20 kann mit Hilfe wenigstens eines Isolierbereichs 21 gewährleistet werden. Im gezeigten Ausführungsbeispiel der
In
Ähnlich zu dem in der
Die vorliegende Erfindung ist nicht auf die dargestellten und beschriebenen Ausführungsbeispiele beschränkt. Abwandlungen im Rahmen der Patentansprüche sind ebenso möglich wie eine Kombination der Merkmale, auch wenn diese in unterschiedlichen Ausführungsbeispielen dargestellt und beschrieben sind.The present invention is not limited to the embodiments shown and described. Modifications within the scope of the patent claims are possible, as is a combination of the features, even if these are shown and described in different embodiments.
- 11
- SchalterSwitch
- 22
- KontaktbrückeneinheitContact bridge unit
- 3, 3'3, 3'
- FestkontaktpaareFixed contact pairs
- 44
- FestkontakteFixed contacts
- 5, 5'5, 5'
- KontaktbrückenContact bridges
- 66
- VerbindungsbereichConnection area
- 77
- AntriebseinheitDrive unit
- 88th
- ÜbersetzungselementTranslation element
- 99
- BetätigungseinheitActuator unit
- 1010
- BegrenzungLimitation
- 1111
- BegrenzungselementLimiting element
- 1212
- RundungRounding
- 1313
- Fasechamfer
- 1414
- GehäuseHousing
- 15, 15'15, 15'
- FührungsbereicheManagement areas
- 1616
- SpannelementClamping element
- 1717
- ZentrierbereichCentering area
- 1818
- RückstellfederReturn spring
- 1919
- KontaktschenkelContact leg
- 2020
- KontaktbereichContact area
- 2121
- IsolierbereichIsolation area
- SRSR
- SchaltrichtungSwitching direction
- QRQR
- QuerrichtungTransverse direction
- DRDR
- DickenrichtungThickness direction
- MEMY
- MittelebeneMiddle level
- αα
- VerschwenkungswinkelTilt angle
- AA
- AbstandDistance
Claims (13)
- Switch (1) in the form of a snap-action switch, having- at least one fixed contact pair (3, 3'),- a contact bridge unit (2) having at least one contact bridge (5, 5') for connecting two fixed contacts (4) of the at least one fixed contact pair (3, 3'),- a drive unit (7) for moving the contact bridge unit (2) arranged thereon along a switching direction (SR) from a first switching position into a second switching position,- an actuating unit (9) for actuating the drive unit (7), and- a transmission element (8) for transmitting an actuating movement introduced by the actuating unit (9) into a drive movement of the drive unit (7),characterizedin that the drive movement of the drive unit (7) is limited laterally by means of a boundary (10) in such a waythat the drive unit (7) can be pivoted to a limited extent during the drive movement in a transverse direction (QR) which runs transversely with respect to the switching direction (SR), andin that the boundary (10) and/or at least one of at least two boundary elements (11) of the boundary (10), which boundary elements (11) are arranged on opposite sides of the drive unit (7) for limiting the drive movement on both sides in the transverse direction (QR), is/are formed in one piece with the housing (14),wherein the boundary (10) and/or the at least one boundary element (11) is/are integrated into the housing (14) as a bulge and/or elevation.
- Switch (1) according to the preceding claim, characterized in that the switch (1) has two fixed contact pairs (3, 3') which are spaced apart from one another in the switching direction (SR).
- Switch (1) according to one of the preceding claims, characterized in that, in the non-pivoted state of the drive unit (7), at least one of the boundary elements (11) is spaced apart from the drive unit (7) by means of a distance (A).
- Switch (1) according to one of the preceding claims, characterized in that at least one of the boundary elements (11) has at least one chamfer (13) and/or one rounding (12).
- Switch (1) according to claim 3, characterized in that the distance (A) is at most 1 mm, advantageously at most 0.5 mm.
- Switch (1) according to one of the preceding claims, characterized in that the switch (1) has at least one linear guide for linearly guiding the actuating movement of the actuating unit (9) parallel to the switching direction (SR),
wherein the linear guide preferably has at least two guide regions (15, 15') which are spaced apart from one another in the switching direction (SR). - Switch (1) according to claim 2, characterized in that the boundary (10) and/or at least one of the boundary elements (11) is/are arranged in the switching direction (SR) between the two fixed contact pairs (3, 3') which are spaced apart from one another.
- Switch (1) according to claim 7, characterized in that the boundary (10) and/or at least one of the boundary elements (11) is/are formed in such a way that the drive movement of the contact bridge unit (2) can be guided past it.
- Switch (1) according to one of the preceding claims, characterized in that at least one of the fixed contacts (4) and/or the at least one contact bridge (5, 5') is/are angled, in particular in the area of a contact area (20) and/or connecting area (6).
- Switch (1) according to one of the preceding claims, characterized in that the at least one contact bridge (5, 5') is flexible at least in sections.
- Switch (1) according to claim 2, characterized in that the contact bridge unit (2) has two contact bridges (5, 5'), wherein a tensioning element (16), in particular a tensioning spring, is preferably arranged between the two contact bridges (5, 5').
- Switch (1) according to one of the preceding claims, characterized in that the at least one contact bridge (5, 5') has at least two contact legs (19) and/or contact areas (20) which are at least partially independent of one another.
- Switch (1) according to claim 12, characterized in that the at least one contact bridge (5, 5') has at least one insulating area (21) for insulating the contact legs (19) and/or contact areas (20) which are at least partially independent of one another,
wherein the at least one insulating area (21) is in the form of an aperture or a distance between the two contact legs (19) and/or contact areas (20) which are at least partially independent of one another.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE102021105359.5A DE102021105359A1 (en) | 2021-03-05 | 2021-03-05 | Switches, in particular snap-action switches |
Publications (3)
Publication Number | Publication Date |
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EP4053869A1 EP4053869A1 (en) | 2022-09-07 |
EP4053869C0 EP4053869C0 (en) | 2024-08-07 |
EP4053869B1 true EP4053869B1 (en) | 2024-08-07 |
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ID=80623697
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Application Number | Title | Priority Date | Filing Date |
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EP22159422.9A Active EP4053869B1 (en) | 2021-03-05 | 2022-03-01 | Switch, in particular a snap switch |
Country Status (3)
Country | Link |
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EP (1) | EP4053869B1 (en) |
CN (1) | CN115036156A (en) |
DE (1) | DE102021105359A1 (en) |
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Publication number | Priority date | Publication date | Assignee | Title |
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DE102022119929A1 (en) | 2022-08-08 | 2024-02-08 | Schaltbau Gmbh | Snap switch |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2410348A1 (en) * | 1977-11-25 | 1979-06-22 | Schaltbau Gmbh | DOUBLE BREAK INSTANTANEOUS SWITCH |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1954449U (en) * | 1965-05-20 | 1967-02-02 | Schaltbau Gmbh | ELECTRIC SNAP SWITCH. |
GB1114630A (en) | 1965-05-20 | 1968-05-22 | Schaltbau Gmbh | Quick action electric switch |
ATE13371T1 (en) * | 1980-10-24 | 1985-06-15 | Square D Starkstrom Gmbh | CONTACT DEVICE. |
DE8611082U1 (en) * | 1986-04-23 | 1986-07-17 | Lindner Gmbh, Fabrik Elektrischer Lampen Und Apparate, 8600 Bamberg | Hand operated electrical switch |
FR2641642B1 (en) * | 1989-01-10 | 1996-04-19 | Alpes Fses Manufacture | SWITCH WITH A QUICK BREAK AND A POSITIVE OPENING SAFETY |
DE19924059C2 (en) | 1999-05-26 | 2003-02-20 | Cherry Gmbh | Mechanically operated snap spring switch |
DE102011014294B3 (en) | 2011-03-17 | 2012-03-29 | Schaltbau Gmbh | Electric snap-action switch |
-
2021
- 2021-03-05 DE DE102021105359.5A patent/DE102021105359A1/en active Pending
-
2022
- 2022-03-01 EP EP22159422.9A patent/EP4053869B1/en active Active
- 2022-03-04 CN CN202210208141.7A patent/CN115036156A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2410348A1 (en) * | 1977-11-25 | 1979-06-22 | Schaltbau Gmbh | DOUBLE BREAK INSTANTANEOUS SWITCH |
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EP4053869C0 (en) | 2024-08-07 |
CN115036156A (en) | 2022-09-09 |
EP4053869A1 (en) | 2022-09-07 |
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