EP0019141B1 - Nockenschalter - Google Patents

Nockenschalter Download PDF

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Publication number
EP0019141B1
EP0019141B1 EP80102312A EP80102312A EP0019141B1 EP 0019141 B1 EP0019141 B1 EP 0019141B1 EP 80102312 A EP80102312 A EP 80102312A EP 80102312 A EP80102312 A EP 80102312A EP 0019141 B1 EP0019141 B1 EP 0019141B1
Authority
EP
European Patent Office
Prior art keywords
switch
chamber
cam
detent
chambers
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.)
Expired
Application number
EP80102312A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0019141A1 (de
Inventor
Bernd Ludwig
Jürgen Donner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Starkstrom Gummersbach GmbH
Original Assignee
Starkstrom Gummersbach GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Starkstrom Gummersbach GmbH filed Critical Starkstrom Gummersbach GmbH
Priority to AT80102312T priority Critical patent/ATE3090T1/de
Publication of EP0019141A1 publication Critical patent/EP0019141A1/de
Application granted granted Critical
Publication of EP0019141B1 publication Critical patent/EP0019141B1/de
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
    • H01H19/64—Encased switches adapted for ganged operation when assembled in a line with identical switches, e.g. stacked switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2229/00—Manufacturing
    • H01H2229/042—Snap coupling; Snap mounting

Definitions

  • the invention relates to a cam switch, consisting of a drive, a latching chamber adjacent to it and one or more switching chambers arranged one behind the other and connected to the latching chamber, the drive having an axis of rotation on which a ratchet wheel of the latching chamber is seated and which up to one for all control chambers common control roller protrudes, such that the drive, index wheel and control roller are connected in a rotationally fixed manner, furthermore in the locking chamber for the purpose of changing the switching angle, spring-loaded, movable balls parallel to the axis of rotation are provided which cooperate with the index wheel, also in each switching chamber an electrical contact device with fixed contact rails, movable contact bridges, contact pressure springs and plungers interacting with the control roller is provided.
  • a cam switch of this type is known from the article by L. L'hoest in the magazine »Elektro-excellentr«, 7/77, pages 46 and 47.
  • the individual components namely drive, latching chamber and switching chambers
  • the individual components are held together by axially parallel screw bolts, so that, for. B. for a change or extension of the switching program not only remove the cam switch from the mounting wall, but must also take it apart by loosening these bolts, so that the cam switch falls apart into its individual parts. After that, the individual components have to be assembled again with great difficulty. If the number of switching chambers is changed, you have to replace longer or shorter new bolts with the earlier ones.
  • the switching chambers in the known cam switch are essentially cylindrical, so that the contacts inside the switching chambers are arranged in a circle around the roller. Accordingly, the contact rails with the contact terminal screws are distributed in rows and at a distance from one another on the circumference of the essentially cylindrical switching chambers.
  • FR-A-1 591 978 describes a multiple rotary switch in which any number of switch parts can be assembled using resilient tongues and locking points.
  • a command switch is known from the "Siemens-Zeitschrift" 48 (1974), number 4, pages 310 and 311, which essentially consists of a drive and a block of similar switching elements.
  • the switching elements of the same type are held together by two longitudinal bolts which pass through bores in the switching elements.
  • the drive has a U-shaped plate, wherein a tab is formed in the upper bent leg of the plate, which is bent upwards at its end.
  • a plate with an upper bent leg is also attached, which has a recess.
  • the command switch is installed in such a way that the drive is inserted into the hole in the mounting plate from the front and then the mounting bracket is screwed in from the rear with a ring nut.
  • the switch insert, i.e. H. the switching element block is then hung with the said recess on the bracket of the drive and then fastened by a screw in the front bearing plate.
  • interrupters there are by no means always symmetrical spring loads; rather, depending on the arrangement of the contact bridges to form openers or closers, one-sided radial spring forces can occur, which thus press on one or more interrupters.
  • cam switches must not have any play from the switch chamber to the switch chamber even when the rotary movement is transmitted, because this could result in an inexact switching process of the entire switching program.
  • the invention is accordingly an object of the invention to provide a cam switch composed of individual assemblies in which the internal forces effective between the assemblies, which are due to the numerous, differently directed springs, are absorbed so that in practice there is no risk that the cam switch opens at any point when actuated, at the same time ensuring simple manufacture of the individual parts, simple assembly of the assemblies, furthermore a simple possibility of changing the circuit program and finally a simple, clearly arranged possibility of attaching the wiring.
  • the cam switch has an essentially square cross-section, that both the successive switching chambers with one another and the latching chamber with the switching chamber adjacent to it as well as the drive with the latching chamber are located on two opposing longitudinal sides of the cam switch, externally visible and actuatable, resiliently elastic components which can be locked in latching points are releasably connected to one another in such a way that the resiliently elastic components provided on the switchgear chambers consist of flat elastic frames which are known per se and which project from the outside via projections of the rest points of adjacent switchgear chambers and the latching chamber engage that the effective between the drive and locking chamber, resiliently elastic components are formed by outwardly angled projections of a mounting plate which engage in the bracket of the locking chamber, the B efest Trentsplatte is connected on the one hand to the other components of the drive and on the other hand rests against the end face of the latching chamber, that the switching chambers are designed asymmetrically and can be arranged in a rotationally secure manner with
  • Fig. 1 illustrates the structure of a cam switch according to the invention, which consists of several interconnectable components, namely a drive, a latching chamber and one or more switching chambers.
  • the drive 1 is designed here as a manually rotatable switch button 1a, to which a marking plate 2, a grid plate 3, a cover plate 4 and a fastening plate 5 are connected.
  • This entire unit is held together, for example, by the fact that the switch button 1a is fastened on an axis of rotation 25, which in turn is located at the other end in a ratchet wheel 7 and can optionally be extended such that the control rollers of the switching chambers described below are also located on the axis of rotation.
  • An adjoining the drive Latching chamber 9 essentially contains the ratchet wheel 7 with stop pin 6 and ratchet springs 8 with balls which cooperate with the raster wheel 7.
  • the locking chamber 9 is followed by one or more switching chambers 11 which are equipped with control rollers 10 and an electrical contact device.
  • the control roller 10 actuates glass balls 12, which can also be replaced by suitably designed plastic plungers with a spherical end surface.
  • special plungers 13 are present, which in turn actuate contact bridges 16 which are supported by contact pressure springs 17 and interact with contact rails 15.
  • An end cover 14 forms the end of the switching device.
  • the resiliently elastic components consist of two mutually opposite, essentially flat webs 19 which engage from outside via the locking points 18 of the component to be connected.
  • these resilient webs 19 are frame-shaped, as shown in the drawing.
  • the locking points 18 are then designed as projections which engage in the recesses of the said frame-shaped webs.
  • the projections of the locking points 18 can advantageously, seen in longitudinal section, be triangular, in such a way that the frame-shaped webs 19 are spread outwards when the individual components are pushed together by the action of the outward-sloping surface of the triangular projections and become inherent Set the spring force behind the triangular protrusions when pushing completely together.
  • depressions 24 are provided, which are intended for the use of a screwdriver-like tool.
  • the components (drive 1, latching chamber 9, switching chambers 11) are designed such that they are asymmetrical in relation to one another, that is to say they are secured against rotation. that is, the components can only be connected to one another in a very specific position by simply plugging them together.
  • connection between the drive unit described with a mounting plate 5 with the adjoining latching chamber 9 takes place in such a way that a resilient bracket 22 with two recesses is provided on one outside of the latching chamber, which has two outwardly angled projections (latching points 23) Mounting plate engages.
  • a rigid bracket 21 is arranged, in which two further, outwardly angled projections 20 of the mounting plate 5 can be used.
  • the latter projections 20 are first brought into engagement in the rigid bracket 21, and then, by pivoting the drive toward the latching chamber, the angled projections (latching points 23) are brought into engagement in the resilient bracket 22, the fastening plate 5 being tight on the corresponding end face of the locking chamber 9 is present.
  • cam switches In electrical control systems, the wiring of cam switches was previously problematic because of the radial arrangement of their connections within crowded device arrangements and often could only be carried out with the aid of additional connection brackets on all terminals.
  • inventive design of the cam switch offered the possibility of providing all the connection screws for the wiring on the two opposite sides of the components, which are not provided with the webs 19 and locking points 18 described.
  • the result is a switch block which is composed of one or more components and which has a substantially rectangular, preferably square cross-section, the connecting terminals being staggered. This means that all connections, no matter how tightly the device is installed, are freely accessible to the wiring, and additional connection angles are saved.
  • a stable screwdriver guide on each terminal leads the screwdriver exactly to the connection screw and centers it when wiring, even when using so-called electric or pneumatic screwdrivers. Slipping of the screwdriver, damage and unsafe connections are avoided. In practice, this results in a significant reduction in the wiring time required.
  • Resilient clamping disks with additional clamping ribs are advantageously provided, which ensure a secure conductor connection.
  • the switching chambers are completely closed and thus offer protection against the ingress of dust, insulation or foreign parts and prevent lines from being accidentally inserted into the internal contact space.
  • a solid, easily replaceable control roller which can be designed for all switching chambers together or individually for each switching chamber and which works together with actuating balls or plungers.
  • the switching bridge of each switch is forced to operate via this continuous, one-piece cylindrical control roller rotatable inside the interrupters.
  • the control roller has holes arranged on its circumference in accordance with the switch program.
  • Each switching bridge is assigned an actuating ball or a plunger with a spherical front end, which can be inserted into the corresponding hole to close the spring-loaded switching bridge when the control drum rotates, but which are pushed out of the hole to open the switching bridge.
  • the balls are guided in a cage so that they form a unit with the switching bridge and cannot fall out even when the control roller is removed. In this way, each switching chamber represents a self-contained functional unit.
  • the switchgear can be assembled by a layperson. Even complicated switching programs can be done in a simple manner, e.g. B. created by a control engineer, because it is only necessary to provide the solid control roller according to the given processing or the existing circuit diagram with holes at the appropriate points. Due to the massive control roller, displacements and twists as with the use of conventional cam wheels are excluded.
  • the locking chamber with the locking wheel is also very simple as a structural unit.
  • steel balls work with a plastic ratchet wheel, as has been described in relation to FIG. 1, in such a way that the switching angle can be changed by simply repositioning these balls.
  • the switching programs to be achieved are therefore extremely versatile and comprehensive. Mechanical wear is largely avoided.
  • FIGS. 4 and 5 make it particularly clear that the switching chambers 11 are divided in the axial direction into two halves 11a, 11b.
  • the switching chambers are made from a single piece, e.g. B. made by pressing. These two halves are shifted against each other in the axial direction according to FIG.
  • the frame-shaped components (webs 19) with the two switching chamber halves are displaced in the axial direction.
  • the frame-shaped components (webs 19) are designed as flat spring tabs and are each attached to the outer sides of the two switching chamber halves. According to the design of these spring tabs, the locking points 18 on the adjacent switching chambers are shifted asymmetrically.
  • Fig. 4 further illustrates that the contact terminal screws 26 with the fixed contact rails 27 and the screwdriver guides 28 are arranged inclined so that a screwdriver can be applied obliquely in the direction of the dash-dotted lines 29 and can thus be worked without hindrance.
  • the switching chambers 11 have intermediate webs 35, 36 and 37 or guides on one axially open end face, which form certain open spaces on the end face for the loose insertion of movable contact pieces 30, furthermore of contact pressure springs 31, plungers 32 and contact connecting bars 33 with fixed contact pieces 34.
  • the loose parts become loose used contact parts, that is, both the movable contact pieces 30 in their range of motion and the contact pressure springs 31 as well as the plunger 32 and finally the contact connecting rails 33 are held captive with fixed contact pieces 34.
  • FIG. 11 illustrates in connection with FIGS. 9, 10 and 1 that the components for the connection between the drive 1 on the one hand and the locking chamber 9 on the other hand are designed such that they transmit effective forces axially and / or tangentially in the locking chamber 9 can.
  • the axial forces come from the axially parallel detent springs 8 with their balls, which cooperate with the detent wheel 7.
  • the tangential forces come from the rotation of the axis of rotation 25.
  • a further advantageous embodiment of the switching chambers results from the fact that the end webs 35, 36 and 37 or guides explained above are connected to an intermediate wall 38 running perpendicular to the axis of rotation of the control roller.
  • This intermediate wall has a circular opening 39 for the passage of the control roller 10.
EP80102312A 1979-05-07 1980-04-29 Nockenschalter Expired EP0019141B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80102312T ATE3090T1 (de) 1979-05-07 1980-04-29 Nockenschalter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2918289 1979-05-07
DE2918289A DE2918289C2 (de) 1979-05-07 1979-05-07 Nockenschalter

Publications (2)

Publication Number Publication Date
EP0019141A1 EP0019141A1 (de) 1980-11-26
EP0019141B1 true EP0019141B1 (de) 1983-04-13

Family

ID=6070095

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80102312A Expired EP0019141B1 (de) 1979-05-07 1980-04-29 Nockenschalter

Country Status (11)

Country Link
US (1) US4335288A (da)
EP (1) EP0019141B1 (da)
AT (1) ATE3090T1 (da)
AU (1) AU538682B2 (da)
BR (1) BR8002789A (da)
CA (1) CA1139810A (da)
DE (2) DE2918289C2 (da)
DK (1) DK154592C (da)
ES (1) ES8100842A1 (da)
MX (1) MX148478A (da)
NO (1) NO157799C (da)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2512265A1 (fr) * 1981-09-01 1983-03-04 Telemecanique Electrique Dispositif de commutation et application a un commutateur ou programmateur
FR2572580A1 (fr) * 1984-10-26 1986-05-02 Alsthom Cgee Commutateur electrique etage a commande rotative
EP0219570B1 (de) * 1985-10-24 1990-09-05 Square D Company (Deutschland) Gmbh Schaltgerät
FR2598553B1 (fr) * 1986-05-06 1994-09-16 Alsthom Cgee Commutateur rotatif multipolaire, en particulier commutateur a cames sous forme de galettes empilees, et procede d'execution de ce dernier
IT1217319B (it) * 1987-06-26 1990-03-22 Breter Spa Commutatore a camme
DE4124668A1 (de) * 1991-07-25 1993-01-28 Ego Elektro Blanc & Fischer Kupplungs-vorrichtung fuer schaltgeraete
FI953115A0 (fi) * 1995-06-21 1995-06-21 Abb Stroemberg Kojeet Oy Kopplingsanordning
DE19707563C2 (de) * 1997-02-26 1999-02-11 Schneider Electric Gmbh Schaltvorrichtung
ES2383293T3 (es) 2008-04-01 2012-06-20 Ewac Holding B.V. Conmutador eléctrico rotatorio
ES2398852R1 (es) * 2010-04-07 2013-05-17 Gave Electro S L Modulo de iluminacion para dispositivos electricos de control y mando
KR101140840B1 (ko) 2010-10-28 2012-05-03 고광훈 캠 스위치용 핸들부의 자동체결장치
US9136696B2 (en) * 2012-01-23 2015-09-15 Advance Controls, Inc Early break inverter bypass safety switch
USD738324S1 (en) 2012-07-16 2015-09-08 Abb Oy Cam switch
DE102018219224A1 (de) * 2018-11-12 2020-05-14 Eaton Intelligent Power Limited Schalter

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA517231A (en) * 1955-10-04 Square D Company Push button electric switch
NL60390C (da) * 1944-03-09
US3201533A (en) * 1961-06-28 1965-08-17 Ite Circuit Breaker Ltd Rotary type control switch
US3188404A (en) * 1962-05-29 1965-06-08 Oak Mfg Co Rotary electric switch with interfitting means
AT248522B (de) * 1963-09-13 1966-08-10 Naimer H L Elektrisches Schaltgerät
GB1185942A (en) * 1968-05-10 1970-03-25 Electronic Components Ltd Improvements in or relating to Rotary Electrical Switches
FR1591978A (da) * 1968-11-15 1970-05-04
US3614363A (en) * 1968-11-18 1971-10-19 Teizo Fujita Cam switch unit
US3778566A (en) * 1972-11-06 1973-12-11 Oak Industries Inc Multisection rotary wafer type switch assembly with interlocking stator and rotor sections
IT1045808B (it) * 1973-01-29 1980-06-10 Breter Spa Dispositivo interruttore con elementi di aggancio a scatto per comrinazione multiple
YU39304B (en) * 1974-04-22 1984-10-31 Iskra Contact unit for yaxley type cam and other switches
IT1038153B (it) * 1975-05-15 1979-11-20 Breter Spa Elemento commutatore
US4016387A (en) * 1975-06-09 1977-04-05 Rival Manufacturing Company Snap together switch assembly
GB1511769A (en) * 1976-10-25 1978-05-24 Spindler Deissler Starkstrom Electric switches
US4133990A (en) * 1977-06-27 1979-01-09 Globe-Union Inc. Rotary switch

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"Elektro-Anzeiger" 7/77, Seiten 46/47 *

Also Published As

Publication number Publication date
AU5793380A (en) 1980-11-13
MX148478A (es) 1983-04-26
NO157799C (no) 1988-05-18
DK154592C (da) 1989-04-17
DE7913111U1 (de) 1982-09-09
EP0019141A1 (de) 1980-11-26
DE2918289C2 (de) 1982-10-21
NO157799B (no) 1988-02-08
CA1139810A (en) 1983-01-18
ES491257A0 (es) 1980-12-01
NO801323L (no) 1980-11-10
DK154592B (da) 1988-11-28
DE2918289A1 (de) 1980-11-20
ES8100842A1 (es) 1980-12-01
ATE3090T1 (de) 1983-04-15
US4335288A (en) 1982-06-15
DK196880A (da) 1980-11-08
AU538682B2 (en) 1984-08-23
BR8002789A (pt) 1980-12-16

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