EP3837708B1 - Commutateur électrique - Google Patents

Commutateur électrique Download PDF

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Publication number
EP3837708B1
EP3837708B1 EP20753351.4A EP20753351A EP3837708B1 EP 3837708 B1 EP3837708 B1 EP 3837708B1 EP 20753351 A EP20753351 A EP 20753351A EP 3837708 B1 EP3837708 B1 EP 3837708B1
Authority
EP
European Patent Office
Prior art keywords
spring frame
detent
housing
electrical switch
spring
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
EP20753351.4A
Other languages
German (de)
English (en)
Other versions
EP3837708A1 (fr
Inventor
Thomas Mejerl
Revanasidda Mathpati
Thomas Kugler
Immanuel Aichele
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.)
Marquardt GmbH
Original Assignee
Marquardt 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 Marquardt GmbH filed Critical Marquardt GmbH
Publication of EP3837708A1 publication Critical patent/EP3837708A1/fr
Application granted granted Critical
Publication of EP3837708B1 publication Critical patent/EP3837708B1/fr
Active 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
    • H01H19/02—Details
    • H01H19/10—Movable parts; Contacts mounted thereon
    • H01H19/11—Movable parts; Contacts mounted thereon with indexing means
    • 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
    • H01H19/02—Details
    • H01H19/10—Movable parts; Contacts mounted thereon
    • H01H19/11—Movable parts; Contacts mounted thereon with indexing means
    • H01H19/115—Movable parts; Contacts mounted thereon with indexing means using molded elastic parts only
    • 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

Definitions

  • the invention is based on an electrical switch according to the preamble of patent claim 1.
  • Such an electrical switch which can be operated like a rotary switch, can be used in electrical and household appliances such as washing machines, dishwashers, etc.
  • the switch in these devices serves as a power and/or program selector.
  • Such an electrical switch designed as a rotary switch, has a rotatable actuating element.
  • a locking mechanism interacts with the actuating element, allowing the actuating element to be rotated into locking positions.
  • the locking mechanism consists of a locking wheel, in particular one with an approximately star-shaped design, and at least one locking element that exerts an elastic force and interacts with the locking wheel.
  • the locking element consists of a compression spring and a ball and/or a sleeve that engages with the locking wheel.
  • Such a locking mechanism therefore comprises a large number of individual parts that are expensive to manufacture and assemble.
  • the locking element in the switch often has to be greased before being inserted, which incurs additional costs and permanently contaminates the assembly areas.
  • the invention is based on the object of further developing the electrical switch in such a way that the locking mechanism is simpler and more cost-effective.
  • the locking element consists of a spring frame, with at least one cam engaging the locking wheel being arranged on the spring frame.
  • the spring frame advantageously achieves cost savings in material and/or assembly effort. Further embodiments of the invention are the subject of the dependent claims.
  • two cams each engaging the ratchet wheel, can be arranged opposite each other on the spring frame.
  • a spring frame not according to the invention can be designed to be closed in a manner that is simple to manufacture. Furthermore, the spring frame can be mounted floatingly in the housing in a manner that is simple to assemble. The cam can expediently be integrated into the spring frame.
  • the spring frame is not designed to be closed. Furthermore, two webs are arranged on the spring frame, approximately perpendicular to the spring frame. These webs can also deflect laterally when the shaft rotates, so that forces occurring between the cam and the ratchet wheel are absorbed by the resilient webs. This effectively prevents the spring frame from twisting in an undefined manner.
  • the spring frame can be manufactured cost-effectively from plastic, particularly from a thermoplastic.
  • the spring frame can expediently operate in the linear-elastic range of the material.
  • the housing may also be advantageous for the housing to be made of plastic, particularly from a thermoplastic. In this case, the spring frame can be integrated into the housing in an even more cost-effective manner. The spring frame can be injected into the housing during production.
  • the locking mechanism is improved in that the spring assembly is replaced by a closed spring frame, preferably made of plastic.
  • the spring operates in the linear-elastic range of the material.
  • the cam contour, which engages the spring is adapted to the friction pair of the spring.
  • the advantages achieved by the invention are, in particular, that an exact and/or reproducible haptic can be generated for the electrical switch for a given switching function. Due to the special shape of the spring frame, it is self-centering, in particular due to the floating bearing in the housing, which reduces the influence of individual part tolerances. Likewise, the optimized friction pairing between the cam on the spring frame and the ratchet wheel eliminates the need for greasing. With the same force and/or ratchet torque ratio, the previously used number of two spring sleeves is reduced to a single spring frame in the form of a plastic spring, which results in cost savings in material and/or assembly effort.
  • the closed design of the spring frame allows, depending on the switching task, either one or both cams to engage with the switching shaft. In particular, the invention allows for smaller switching angles than previously possible.
  • Fig. 1 1 shows a closer look at an electrical switch 1 not according to the invention, designed as a rotary switch.
  • the switch 1 has a housing 2 from which a shaft 3 protrudes.
  • the shaft 3 interacts with a contact system located in the housing 2, not shown in detail, to switch the switch 1.
  • An actuating element 4, which can be rotated by the user, is arranged on the shaft 3, so that the contact system can be switched into its switching positions by means of the actuating element 4.
  • a locking mechanism 5 interacts with the actuating member 4 in such a way that the actuating member 4 can be rotated into locking positions, the locking positions corresponding to the switching positions of the contact system correspond.
  • the locking mechanism 5 consists of a ratchet wheel 6, in particular of an approximately star-shaped design, and at least one locking member 7 which exerts an elastic force and interacts with the ratchet wheel 6.
  • the locking member 7 in this case consists of a spring frame. At least one cam 8 which engages in the ratchet wheel 6 is arranged on the spring frame 7.
  • two cams 8, 8' each engaging in the ratchet wheel 6, are arranged opposite one another on the spring frame 7, so that the elastic ratchet force exerted by the spring frame 7 acts approximately symmetrically on the ratchet wheel 6.
  • Ratchet wheels 6 are arranged, each of which interacts with a spring frame 7 as a locking mechanism 5.
  • the spring frame 7 is made of plastic, in particular a thermoplastic.
  • the spring frame 7 is operated in the linear-elastic range of the material.
  • the housing 2 can also be made of plastic, in particular a thermoplastic.
  • the base 2", the cover 2', the spring frame 7, and also the shaft 3 with ratchet wheel 6 and switching cam 9 can be manufactured by injection molding.
  • the cam 8, 8' can be integrated into the spring frame 7 by injection molding during the production of the spring frame 7.
  • the spring frame 7 is mounted in a floating manner in the housing 2.
  • the spring frame 7 can also be integrated in the housing 2, in particular in the base 2", by injecting the spring frame 7 into the housing 2 by means of injection molding during the manufacture of the housing 2.
  • Such an electrical switch 1 can be used not only as a rotary switch in household appliances, such as washing machines or dishwashers, but also in other electrical devices, such as power tools.

Landscapes

  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)

Claims (5)

  1. Commutateur électrique, en particulier commutateur rotatif, comprenant un boîtier (2), un organe d'actionnement rotatif (4), un système d'encliquetage (5) qui coopère avec l'organe d'actionnement (4) de telle sorte que l'organe d'actionnement (4) peut être amené par rotation dans des positions d'encliquetage, dans lequel l'encliquetage (5) est composé d'une roue d'encliquetage (6) en particulier configurée approximativement en forme d'étoile, ainsi que d'au moins un élément d'encliquetage (7) coopérant avec la roue d'encliquetage (6) et exerçant une force élastique, dans lequel l'élément d'encliquetage (7) est composé d'un cadre à ressort, et au moins une came (8) venant en prise avec la roue d'encliquetage (6) est disposée sur le cadre à ressort (7), le cadre à ressort (7) n'étant configuré sans être fermé ; et dans lequel deux entretoises (12, 12') sont disposées sur le cadre à ressort (7) en position approximativement verticale par rapport au cadre à ressort (7), caractérisé en ce que le cadre à ressort (7) est monté flottant dans le boîtier (2).
  2. Commutateur électrique selon la revendication 1, caractérisé en ce que la roue d'encliquetage (6) est disposée sur un arbre (3) en relation active avec l'organe d'actionnement (4), en ce que de préférence l'arbre (3) est monté en rotation dans le boîtier (2), en ce que de plus grande préférence, un système de contact électrique se trouve dans le boîtier (2), et dans lequel en particulier le système de contact peut être commuté au moyen d'une came de commutation (9) disposée sur l'arbre (3) dans des positions de commutation correspondant aux positions d'encliquetage.
  3. Commutateur électrique selon la revendication 1 ou 2, caractérisé en ce qu'en ce que deux cames (8, 8') venant respectivement en prise avec la roue d'encliquetage (6), sont disposées l'une en face de l'autre sur le cadre à ressort (7).
  4. Commutateur électrique selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le cadre à ressort (7) est fabriqué en matière plastique, en particulier en matière plastique thermoplastique, en ce que de préférence le cadre à ressort fonctionne dans la plage élastique linéaire du matériau, et en ce que de plus grande préférence la came (8, 8') est réalisée en étant intégrée dans le cadre à ressort (7).
  5. Commutateur électrique selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le boîtier (2) est composé de matière plastique, en particulier d'une matière plastique thermoplastique.
EP20753351.4A 2019-09-02 2020-08-06 Commutateur électrique Active EP3837708B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019006159.4A DE102019006159A1 (de) 2019-09-02 2019-09-02 Elektrischer Schalter
PCT/EP2020/072194 WO2021043529A1 (fr) 2019-09-02 2020-08-06 Commutateur électrique

Publications (2)

Publication Number Publication Date
EP3837708A1 EP3837708A1 (fr) 2021-06-23
EP3837708B1 true EP3837708B1 (fr) 2025-07-02

Family

ID=71994517

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20753351.4A Active EP3837708B1 (fr) 2019-09-02 2020-08-06 Commutateur électrique

Country Status (3)

Country Link
EP (1) EP3837708B1 (fr)
DE (1) DE102019006159A1 (fr)
WO (1) WO2021043529A1 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007013383B3 (de) * 2007-03-16 2008-09-04 Preh Gmbh Bedienelement mit mechanischer Rastung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3196237A (en) * 1962-07-11 1965-07-20 Ark Les Switch Corp Rotary switch using plastic cover with integral leaf springs as positioning means
US4034178A (en) * 1975-10-09 1977-07-05 Amp Incorporated Rotary switch housing having integral flexible detenting walls and rotor mounting structure
US4894492A (en) * 1988-09-01 1990-01-16 Palumbo Nicholas R Motor control variable speed reversing switch
DE4430018A1 (de) * 1994-08-24 1996-02-29 Siemens Ag Elektrische Stelleinrichtung
US5589671A (en) * 1995-08-22 1996-12-31 Us Controls Corp. Rotary switch with spring stabilized contact control rotor
DE202008002959U1 (de) * 2008-03-01 2009-07-02 Gira Giersiepen Gmbh & Co. Kg Elektrische Installationsvorrichtung, wie Drehschalter oder Drehregler, insbesondere Rastpotentiometer
JP2017091603A (ja) * 2015-11-02 2017-05-25 株式会社村田製作所 回転エンコーダ

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007013383B3 (de) * 2007-03-16 2008-09-04 Preh Gmbh Bedienelement mit mechanischer Rastung

Also Published As

Publication number Publication date
DE102019006159A1 (de) 2021-03-04
EP3837708A1 (fr) 2021-06-23
WO2021043529A1 (fr) 2021-03-11

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