EP3714473B1 - Système de commutation muni d'au moins un élément de commutation électronique et d'un arbre à cames - Google Patents

Système de commutation muni d'au moins un élément de commutation électronique et d'un arbre à cames Download PDF

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Publication number
EP3714473B1
EP3714473B1 EP18804618.9A EP18804618A EP3714473B1 EP 3714473 B1 EP3714473 B1 EP 3714473B1 EP 18804618 A EP18804618 A EP 18804618A EP 3714473 B1 EP3714473 B1 EP 3714473B1
Authority
EP
European Patent Office
Prior art keywords
switch
switch device
camshaft
carriage
switching
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.)
Active
Application number
EP18804618.9A
Other languages
German (de)
English (en)
Other versions
EP3714473A1 (fr
Inventor
Christof Hegger
Uwe RÖBKE
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.)
Steute Technologies GmbH and Co KG
Original Assignee
Steute Technologies GmbH and Co KG
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
Priority claimed from DE202017107118.9U external-priority patent/DE202017107118U1/de
Priority claimed from DE202018103237.2U external-priority patent/DE202018103237U1/de
Application filed by Steute Technologies GmbH and Co KG filed Critical Steute Technologies GmbH and Co KG
Publication of EP3714473A1 publication Critical patent/EP3714473A1/fr
Application granted granted Critical
Publication of EP3714473B1 publication Critical patent/EP3714473B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01H19/54—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 the operating part having at least five or an unspecified number of operative positions
    • H01H19/60—Angularly-movable actuating part carrying no contacts
    • H01H19/62—Contacts actuated by radial cams
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H15/00—Switches having rectilinearly-movable operating part or parts adapted for actuation in opposite directions, e.g. slide switch
    • H01H15/02—Details
    • H01H15/06—Movable parts; Contacts mounted thereon
    • H01H15/10—Operating parts
    • H01H15/102—Operating parts comprising cam devices
    • H01H15/105—Adjustable cams
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H15/00—Switches having rectilinearly-movable operating part or parts adapted for actuation in opposite directions, e.g. slide switch
    • H01H15/02—Details
    • H01H15/06—Movable parts; Contacts mounted thereon
    • H01H15/10—Operating parts
    • H01H15/102—Operating parts comprising cam devices
    • H01H15/107—Operating parts comprising cam devices actuating conventional selfcontained microswitches
    • 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
    • H01H19/54—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 the operating part having at least five or an unspecified number of operative positions
    • H01H19/60—Angularly-movable actuating part carrying no contacts
    • H01H19/62—Contacts actuated by radial cams
    • H01H19/623—Adjustable cams

Definitions

  • the invention relates to an electrical switching device with at least one switching element actuated by a cam of a camshaft.
  • the invention relates to such a switching device in which the camshaft is coupled to a lever or a lever-like actuator for actuating the switching device, for example a belt misalignment switch.
  • Camshafts are found in large numbers in the valve trains of internal combustion engines.
  • space cams in which the opening and closing behavior of the valve is influenced by changing the position of the valve's point of action on the space cam parallel to the camshaft axis. Either the camshaft is moved along its axis or intermediate elements such as finger or rocker arms are moved.
  • camshafts are often used in lever-operated shifting devices.
  • an actuating lever is usually fastened to a switching shaft which is designed as a camshaft and has cams, via which one or more switches are actuated directly or indirectly, depending on the angle of rotation of the shaft.
  • a rough basic setting of the switching points is carried out by the fitter using the fastening bracket of the lever on the camshaft.
  • the fine adjustment takes place via measures in the effective path between the cam and the actuating element.
  • a cam switching device with a plurality of pairs of cam disks arranged next to one another on a camshaft.
  • the pairs of cam disks each comprise two individual cams which lie close together and act like a cam with regard to an associated switch.
  • the switches can be easily replaced by placing them on one side on a rod running parallel to the shaft, then swiveling them in and holding them in position on a second side with only one screw.
  • the individual cams are mutually adjustable in the circumferential direction to the To be able to adjust switching points of the respectively assigned switch. The adjustment is made via a combination of worm wheel and worm.
  • the switching points can thus be set individually for each switch, but the camshaft pairs are complex in design.
  • the pamphlet DE 1 765 279 A1 shows a comparable cam switching device, the individual cams each having toothing instead of the combination of worm wheel and worm to set the switching point, which adjustably engages in a corresponding toothing of a driver disk, which, however, also leads to a complex construction of the camshaft pairs. In both cases, an adjustment during operation is also excluded.
  • the pamphlet DE1241893B describes a switching device with a switching cam, which is differently stepped over the circumference in the axial direction of a camshaft, for actuating two switching elements via coaxially arranged transmission elements.
  • the shifting process takes place here by turning and/or axially shifting the camshaft with fixed shifting elements.
  • the coaxially arranged transmission elements are absolutely necessary here, an adjustability with regard to the switching points is not described.
  • it is a switching device for limiting the function of a device with a boom that can be pivoted about a vertical and a horizontal axis, for example a crane.
  • the ones in the pamphlet DE 6906848 U has an adjustment option when the switch housing is closed, which, however, has a complex design and is susceptible to jamming because of a curved sliding guide of a ring-segment-like element to be adjusted.
  • the object of the invention is therefore to create a switching device with simple adjustability of the switching points of the switches, which is operationally reliable, consists of few components and is easy to assemble.
  • a switching device is characterized in that the cam is designed as a space cam and that the at least one switching element for setting a switching point is arranged to be displaceable essentially parallel to an axis of the camshaft.
  • the cross section of the cam changes in the axial direction of the camshaft.
  • the switching point also known as the switching threshold, of the at least one switching element can be varied by changing the position of the switching element along the axis of the camshaft.
  • the camshaft is advantageously fixed in its axial position.
  • the solution described can also be implemented in switching devices with a plurality of switching elements, the position of which can then be changed individually or jointly.
  • the at least one shifting element is mounted on a carriage, which enables displacement parallel to the axis of the camshaft, or is connected to it in one piece.
  • the carriage is guided in the axial direction, so can along the Axis direction of the camshaft can be moved. If there are at least two switching elements, these can be assigned to different carriages in order to be able to set the switching points of the switching elements independently of one another.
  • a development of the solution provides for an adjustment possibility outside of a common housing accommodating the camshaft and the at least one switching element. This is advantageous if the switching points should also be able to be set or readjusted, e.g. during operation of the switching device, without the housing of the switching device having to be opened.
  • setting means can be arranged in the housing, by means of which the switching point or the switching points can be set directly or indirectly from the outside.
  • the adjustment means are one or more adjustment shafts mounted in the housing and guided through an opening in a housing wall at least at one end, aligned essentially parallel to the axis of the camshaft and each provided with a thread or a thread-like contour. The contour is in engagement with a corresponding counter-contour in the respective carriage, so that rotating the respective adjustment shaft causes the associated carriage to be displaced.
  • the at least one switching element is releasably fixed in a latching manner after the switching point has been set.
  • the carriage is designed as a locking carriage, which enables the displacement essentially parallel to the axis of the camshaft and the releasable locking fixing.
  • the carriage can have a latching element which engages in a corresponding counter-contour.
  • the latching element can be formed by teeth, which are referred to below as carriage teeth.
  • the switching points can thus be set easily and, if necessary, without tools, by moving the carriage and locking it in the desired switching position.
  • the carriage itself can be installed in the switching device and removed from it without tools. More preferably, the carriage can be made in one piece, with the latching element and guide means in particular being formed integrally.
  • the switching device has a scale for reading off the switching point to be expected.
  • the scale can serve as a setting aid for the switching point.
  • Embodiments of the invention may be used to advantage, for example, in lever-operated switches, particularly belt misalignment switches.
  • a lever in order to actuate the lever-actuated switch, a lever, in particular a roller lever, is preferably coupled in a rotationally fixed manner to the camshaft.
  • a belt misalignment switch 1 is shown as an example of a switching device with a housing 2 .
  • a camshaft 3 is rotatably mounted with a space cam 4 which is held firmly on it or is made in one piece with it.
  • a roller lever 5 is connected to the camshaft 3 and actuates the camshaft 3 in the direction of rotation against the force of a return spring 6 .
  • One or more switching elements 7 are arranged next to the camshaft 3 , each with an actuating element 8 facing the camshaft 3 .
  • the switching elements 7 shown here are, for example, common microswitches that have plungers as actuating elements 8 .
  • any other types of switching elements for example contactless switching elements or switching elements that detect the actuating path, with any other actuating elements, for example roller tappets or levers, are conceivable.
  • Electromechanical switching elements or also semiconductor-based switching elements, such as Hall sensors, can be used.
  • the switching elements 7 are arranged in or on carriages 9, which in turn are held in a suitable manner (not shown here) on sliding plates 10 connected to the housing in such a way that they can be displaced parallel to the axis of the camshaft 3 and fixed at any desired location .
  • Suitable holding options are, for example, screw clamp connections.
  • the contour of the spacer cam 4 is selected in such a way that by moving the carriage 9 with the switching elements 7, the angle of the roller lever 5 referred to below as the switching angle at which the respective actuating element 8 moves from the corresponding cam flank 11 beyond the switching point of the corresponding switching element 7 into operated in one direction or the other can be adjusted as desired.
  • the spacer cam 4 can be provided with a scale 14 as an adjustment aid, the values of which are indicative of the resulting switching angle.
  • FIG. 2 shows a further belt misalignment switch 1 as a second exemplary embodiment of a switching device.
  • the same reference symbols designate elements that are the same or have the same effect as in the first exemplary embodiment.
  • the adjustment shaft 13 can be a threaded rod, a worm shaft or a similar element suitable for adjustment, which is rotatably mounted in a suitable manner in the housing 2 and from the outside directly, for example via a crank formed in one piece, or by means of an aid , For example, a screwdriver can be operated in the direction of rotation.
  • the rotary movement of the adjustment shaft 13 is transmitted via its thread, worm or similar to the carriage 9 designed as a counterpart(s), which then moves in axial direction of the camshaft 3 can be moved. With the carriage 9, the switching elements 7 can be brought into a position in which they are switched to the desired switching angle.
  • cam flanks 11 of spacer cam 4 have a profile that corresponds to a linear change in the switching angle between the ends of the adjustment range.
  • any other desired profile of the cam flanks 11 is also possible within the framework of the geometric feasibility. It is also possible to set the effective behavior of the switching elements via a profile of the cam height (not shown here) and the thus variable stroke of the actuating elements.
  • the switching angle end values 15 shown here on a scale 14 are to be regarded as an example. Any other end values are also possible within the framework of geometric feasibility. It is also possible to add further switching angle values beyond the end values shown here or to choose a completely different suitable form of scale representation.
  • the carriages 9 are designed to be adjustable as latching carriages. They are also referred to as locking carriages 9 below. It goes without saying that it can also be provided that only one of the two carriages 9 is designed as such a locking carriage.
  • FIG 5 shows the arrangement of the locking carriage 9 on a sliding plate 10.
  • the sliding plate 10 has a guide slot 19 and a locking slot 20 with teeth, hereinafter referred to as plate teeth 17, with the slots 19 and 20 running essentially parallel to the axis of the camshaft 3.
  • the locking carriage 9 is formed by a hook-shaped Guide element 21 is guided in the direction perpendicular to the sliding plate 10 and in one of the directions perpendicular to the guide slot 19 and parallel to the sliding plate 10 .
  • the latching carriage 9 is held in a direction perpendicular to the sliding plate 10 and parallel to the latching slot 20 by means of a latching element 18 provided with teeth, hereinafter referred to as carriage teeth 16, which is hook-shaped at its lower end.
  • the locking carriage 9 and with it the corresponding switching element 7 can be displaced parallel to the camshaft 3 by disengaging the teeth 16 and 17 with the aid of a release element 23 .
  • the switching angle is set to a desired value.
  • the locking carriage 9 is fixed in its position and the set switching angle is fixed.
  • the locking slide 9 is mounted on the sliding plate 10 in such a way that the guide element 21 is first passed through the guide slot 19 and the locking slide 9 is then displaced perpendicularly to the camshaft axis in such a way that the guide element 21 grips under the sliding plate 10.
  • the latching element 18 is then deflected by actuating the release element 23 in such a way that the hook-shaped lower end of the latching element 18 can be guided through the latching slot 20 in a movement of the latching carriage 9 pivoting about the guide element 21 like a hinge.
  • the release element 23 is released, as a result of which the deflection of the locking element 18 is terminated, the locking element 18 engages under the sliding plate 10 and the carriage toothing 16 engages in the plate toothing 17 .
  • FIG. 7 shows a partial view of the sliding plate 10 with the guide slot 19 and the locking slot 20 together with the plate teeth 17.
  • the plate teeth 17 work with the carriage teeth 16, a guide slot guide flank 24 with the guide element 21, a locking slot guide flank 25 with the Guide pin 22, the locking element 18 and the guide element 21 with the underside of the sliding plate 10 and the underside of the locking carriage 9 together in such a way that a form-fitting positioning of the locking carriage 9 is essentially achieved.
  • the locking carriage 9 shows an embodiment of the locking carriage 9 with the guide element 21, the - not visible here - guide pin 22 and the locking element 18.
  • the locking element 18 has the carriage teeth 16 and the release element 23 on.
  • the one-piece design of the latching carriage 9 shown here is made possible by using a suitably elastic material which, on the one hand, has sufficient strength and rigidity overall and, on the other hand, allows the elastic, self-resetting deflection of the latching element 18 with a suitable design of the connection.

Landscapes

  • Mechanisms For Operating Contacts (AREA)
  • Transmission Devices (AREA)
  • Valve Device For Special Equipments (AREA)

Claims (14)

  1. Dispositif de commutation comportant au moins un élément de commutation (7) actionné par une came d'un arbre à came (3), caractérisé en ce que la came est conformée comme une came tridimensionnelle (4) et en ce que l'au moins un élément de commutation (7) est disposé avec possibilité de translation sensiblement parallèle à un axe de l'arbre à came (3) pour régler un point de contact de commutation.
  2. Dispositif de commutation selon la revendication 1, dans lequel l'au moins un élément de commutation (7) est supporté sur un chariot (9) permettant la translation parallèlement à l'axe de l'arbre à came (3) ou relié d'un seul tenant à celui-ci.
  3. Dispositif de commutation selon la revendication 2, présentant un boîtier (2) dans lequel sont disposés des moyens de réglage au moyen desquels le point de contact de commutation peut être réglé directement ou indirectement par l'extérieur.
  4. Dispositif de commutation selon la revendication 3, dans lequel les moyens de réglage comprennent un ou plusieurs arbres de réglage (13) sensiblement parallèles à l'axe de l'arbre à came (3), supportés dans le boîtier (2) et passant à travers une ouverture dans une paroi du boîtier (2) au moins à une extrémité, comportant chacun un filetage ou un contour ressemblant à un filetage, le contour étant en prise avec un contour opposé dans le chariot (9) correspondant et une rotation de l'arbre de réglage (13) en question produisant une translation du chariot correspondant.
  5. Dispositif de commutation selon la revendication 2, dans lequel l'au moins un élément de commutation (7) est fixé par un enclenchement pouvant être défait après l'ajustement du point de contact de commutation.
  6. Dispositif de commutation selon la revendication 5, dans lequel le chariot (9) est conçu comme un chariot à enclenchement qui permet la translation sensiblement parallèle à l'axe de l'arbre à came (3) et la fixation par un enclenchement pouvant être défait.
  7. Dispositif de commutation selon la revendication 6, dans lequel le chariot (9) peut être monté dans le dispositif de commutation et retiré de celui-ci sans outils.
  8. Dispositif de commutation selon la revendication 6 ou 7, dans lequel le chariot (9) présente un élément d'enclenchement (18) comportant une denture de chariot (16) qui se met en prise dans un contour opposé, en particulier une denture de plaque (17).
  9. Dispositif de commutation selon la revendication 7 ou 8, dans lequel le chariot (9) est réalisé d'une pièce.
  10. Dispositif de commutation selon l'une des revendications 5 à 9, dans lequel l'enclenchement peut être défait et l'au moins un élément de commutation (7) peut être déplacé sans outils.
  11. Dispositif de commutation selon l'une des revendications 1 à 10, présentant des graduations (14) pour la lecture du point de contact de commutation à attendre.
  12. Dispositif de commutation selon l'une des revendications 1 à 11, présentant un levier couplé à l'arbre à came (3) de façon solidaire en rotation en vue de l'actionnement.
  13. Dispositif de commutation selon la revendication 12, dans lequel le levier est un levier à rouleau (5).
  14. Dispositif de commutation selon la revendication 12 ou 13, conçu sous la forme d'un interrupteur de déport de bande (1).
EP18804618.9A 2017-11-23 2018-11-19 Système de commutation muni d'au moins un élément de commutation électronique et d'un arbre à cames Active EP3714473B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE202017107118.9U DE202017107118U1 (de) 2017-11-23 2017-11-23 Schalteinrichtung mit mindestens einem elektrischen Schaltelement und einer Nockenwelle
DE202018103237.2U DE202018103237U1 (de) 2018-06-08 2018-06-08 Schalteinrichtung mit mindestens einem elektrischen Schaltelement und einer Nockenwelle
PCT/EP2018/081768 WO2019101687A1 (fr) 2017-11-23 2018-11-19 Système de commutation muni d'au moins un élément de commutation électronique et d'un arbre à cames

Publications (2)

Publication Number Publication Date
EP3714473A1 EP3714473A1 (fr) 2020-09-30
EP3714473B1 true EP3714473B1 (fr) 2023-04-05

Family

ID=64362561

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18804618.9A Active EP3714473B1 (fr) 2017-11-23 2018-11-19 Système de commutation muni d'au moins un élément de commutation électronique et d'un arbre à cames

Country Status (6)

Country Link
US (1) US11361919B2 (fr)
EP (1) EP3714473B1 (fr)
CN (1) CN111373501B (fr)
BR (1) BR112020009188A2 (fr)
PL (1) PL3714473T3 (fr)
WO (1) WO2019101687A1 (fr)

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1200270A (fr) 1960-07-13 1959-12-21 Perfectionnements aux interrupteurs à poussoir du type fin de course et analogues
DE1176236B (de) * 1962-11-19 1964-08-20 Reinhausen Maschf Scheubeck Nockenschalteinrichtung
DE1901057U (de) 1963-12-20 1964-09-24 Arndt Stange Programmschalter mit springkontakten und nockenantrieb fuer niveau, druck od. dgl.
DE1281533B (de) * 1965-07-08 1968-10-31 Sachsenwerk Licht & Kraft Ag Mehrstufiger Zwillingstastschalter mit einer gegenseitigen Verriegelungseinrichtung
DE1241893B (de) 1965-10-14 1967-06-08 Licentia Gmbh Schalteinrichtung zur Begrenzung der Funktion eines Geraetes
DE1765279A1 (de) * 1968-04-26 1971-07-08 Reinhausen Gebrueder Schaubeck Nockenschalteinrichtung
DE6906848U (de) 1969-02-18 1969-06-19 Eduard Hermle Schaltwerk
US3612800A (en) 1970-04-24 1971-10-12 Robert E Slopa Switch with adjustable switch actuator
US3770924A (en) 1972-06-30 1973-11-06 Robertshaw Controls Co Cam operated electrical switch and with tangentially and radially threadably adjustable cam follower therefor
US3971904A (en) * 1973-10-23 1976-07-27 Illinois Tool Works Inc. Switch assembly for gas tap assembly having cam operated leaf spring contacts and split housing cam detent stop
US3980852A (en) * 1975-01-20 1976-09-14 Litton Industrial Products, Inc. Adjustable high density cam-switch assembly
DE3722036A1 (de) 1987-07-03 1989-01-12 Swf Auto Electric Gmbh Justiereinrichtung fuer einen elektrischen schalter, insbesondere fuer einen mikroschalter
KR930006769A (ko) * 1991-09-14 1993-04-21 다테이시 요시오 리미트 스위치
JP5279855B2 (ja) 2011-02-02 2013-09-04 中国電力株式会社 リミットスイッチの動作タイミング調整装置
CN104124093B (zh) * 2013-04-26 2018-07-31 株式会社有信 转向锁定装置
CN103762106A (zh) * 2013-11-25 2014-04-30 重庆天之道科技发展有限公司 调时凸轮机构
CN107004523B (zh) * 2014-12-15 2018-11-13 艾森鲍责任有限公司 具有限位开关的控制装置

Also Published As

Publication number Publication date
WO2019101687A1 (fr) 2019-05-31
PL3714473T3 (pl) 2023-10-16
EP3714473A1 (fr) 2020-09-30
CN111373501A (zh) 2020-07-03
US20200381197A1 (en) 2020-12-03
US11361919B2 (en) 2022-06-14
BR112020009188A2 (pt) 2020-11-03
CN111373501B (zh) 2023-01-24

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