EP3837708A1 - Commutateur électrique - Google Patents

Commutateur électrique

Info

Publication number
EP3837708A1
EP3837708A1 EP20753351.4A EP20753351A EP3837708A1 EP 3837708 A1 EP3837708 A1 EP 3837708A1 EP 20753351 A EP20753351 A EP 20753351A EP 3837708 A1 EP3837708 A1 EP 3837708A1
Authority
EP
European Patent Office
Prior art keywords
spring frame
housing
electrical switch
spring
locking
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.)
Pending
Application number
EP20753351.4A
Other languages
German (de)
English (en)
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
Pending legal-status Critical Current

Links

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 claim 1.
  • Such an electrical switch which can be actuated in the manner of a rotary switch, can be used in electrical and household appliances, such as washing machines, dishwashers or the like.
  • the switch in these devices serves as a network and / or program selection switch.
  • Such an electrical switch designed as a rotary switch has a rotatable actuating member.
  • a latching mechanism interacts with the actuating element, so that the actuating element can be rotated into latching positions.
  • the latching consists of a locking wheel, in particular an approximately star-shaped design, as well as at least one locking member which exerts an elastic force and interacts with the locking wheel.
  • the locking member consists of a compression spring and a ball and / or a sleeve which engages in the locking wheel.
  • Such a latching thus comprises a larger number of individual parts that are expensive to manufacture and assemble.
  • the latching element in the switch must often be greased, which causes 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 latching is made simpler and more cost-effective. This object is achieved in a generic electrical switch by the characterizing features of claim 1.
  • the locking member consists of a spring frame, with at least one cam engaging in the locking wheel being arranged on the spring frame.
  • the spring frame results in cost savings in terms of material and / or assembly effort. Further refinements of the invention are the subject of the subclaims.
  • a housing can be provided for the electrical switch.
  • the ratchet wheel can be arranged in a simple manner on a shaft that is operatively connected to the actuating element.
  • the shaft can expediently be rotatably mounted in the housing.
  • an electrical contact system can usually be located in the housing, wherein in particular the contact system can be switched into switching positions corresponding to the latching positions by means of a switching cam arranged on the shaft.
  • two cams each engaging the locking wheel can be arranged opposite one another on the spring frame.
  • the spring frame can be designed to be closed in a manner that is simple in terms of manufacturing technology. Furthermore, the spring frame can be mounted in a floating manner in the housing in a manner that is simple in terms of assembly.
  • the cam can expediently be designed to be integrated in the spring frame.
  • the spring frame cannot be designed to be closed.
  • at least one web preferably two webs, can be arranged on the spring frame standing approximately perpendicular to the spring frame. These webs can also give way 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 itself in an undefined manner.
  • the spring frame can be manufactured from plastic, in particular from a thermoplastic plastic, in a cost-effective manner.
  • the spring frame can expediently be operated in the linear-elastic region of the material.
  • the housing can also be advisable for the housing to be made of plastic, specifically in particular a thermoplastic plastic.
  • the spring frame can then be integrated in the housing in a still more cost-effective manner. In fact, the spring frame can be injected into the housing by means of injection molding during the manufacture of the housing.
  • Haptic feedback is often required for rotary switches. This is mostly solved by a compression spring in combination with a ball and / or a sleeve which engages in a type of toothing or in a special cam shape.
  • these systems are complex to assemble and, due to the number of individual parts and their materials and / or manufacture, are usually expensive.
  • this system often has to be “greased” in the switch, which incurs additional costs and permanently pollutes the assembly areas.
  • This spring arrangement is to be replaced by a more economical solution, in particular for cost-sensitive applications.
  • the locking mechanism is improved in that the spring arrangement is replaced by a closed spring frame, preferably made of plastic.
  • the spring is operated in the linear-elastic range of the material.
  • the spring frame it is also possible to integrate the spring frame directly in the housing using a suitable tool system.
  • the spring does not only show a linear-elastic behavior in its preferred direction. Rather, it is designed so that the force derived from the cam movement normal to the surface can be absorbed by additional resilient elements and the spring does not twist itself in an undefined manner. In the present case, this is achieved by an integrated spring with two webs that are perpendicular to the main spring and that can also move laterally.
  • an exact and / or reproducible haptic is generated here with a given switching function.
  • FIG. 2 shows a section along the line 2-2 in FIG. 1,
  • FIG. 3 shows an exploded view of the switch from FIG. 1,
  • FIG. 4 shows a section as in FIG. 2 for a further embodiment of the switch
  • FIG. 5 shows an exploded view as in FIG. 3 for the further embodiment of the switch.
  • an electrical switch 1 designed as a rotary switch can be seen in more detail.
  • the switch 1 has a housing 2 from which a shaft 3 protrudes.
  • the shaft 3 interacts with a contact system (not shown in detail) located in the housing 2 for switching the switch 1.
  • An actuating member 4 that 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 member 4.
  • a latching mechanism 5 interacts with the actuating member 4 in such a way that the actuating member 4 can be rotated in latching positions, the latching positions corresponding to the switching positions of the contact system.
  • the latch 5 consists of a, in particular approximately star-shaped, latching wheel 6 and at least one latching member 7 which exerts an elastic force and interacts with the latching wheel 6.
  • the latching member 7 in the present case consists of a spring frame. At least one cam 8 engaging in the locking wheel 6 is arranged on the spring frame 7. In the embodiment of the switch 1 shown in FIG. 2, there are two, each engaging in the locking wheel 6 Cams 8, 8 'arranged opposite one another on the spring frame 7, so that the elastic latching force exerted by the spring frame 7 acts approximately symmetrically on the latching wheel 6.
  • the locking wheel 6 is on the, with the actuator
  • the shaft 3 is rotatably mounted in the housing 1.
  • the contact system can be switched into switching positions corresponding to the latching positions by means of a switching cam 9 arranged on the shaft 3.
  • a switching cam 9 arranged on the shaft 3.
  • several switching cams 9 for the contact system can also be located on the shaft 3.
  • the spring frame 7 is designed to be closed and is mounted in a floating manner in the housing 2.
  • the housing 2 finally consists of a base 2 ′′ and a cover 2 ′.
  • the cover 2 ′ can be latched by means of tabs 10 on locking hooks 11 of the base 2 ′′.
  • the switch 1 is shown according to a further embodiment, the spring frame 7 is not designed here to be closed.
  • the spring frame 7 is preferably provided with two mutually opposite webs 12, 12 '.
  • the webs 12, 12 ' are arranged in the housing 2 in such a way that they can also move laterally.
  • the spring frame 7 not only shows a linear-elastic behavior in a preferred direction, but rather the force resulting from the movement of the cam 8 normal to the surface of the spring frame 7 is intercepted by the additional resilient webs 12, 12 '.
  • the spring frame 7 is effectively prevented from twisting in itself in an undefined manner.
  • two locking wheels 6 are arranged on the shaft 3, each with a spring frame 7 as a locking
  • the spring frame 7 is made of plastic, in particular a thermoplastic plastic.
  • the spring frame 7 is operated in the linear-elastic region of the material.
  • the housing 2 can also be made of plastic, in particular a thermoplastic Plastic.
  • the base 2 ′′ as well as the cover 2 'and the spring frame 7 as well as the shaft 3 with locking wheel 6 and switching cam 9 can be produced by injection molding.
  • the cam 8, 8' can be inserted into the spring frame 7 by injection molding during the production of the spring frame 7
  • the spring frame 7 is floatingly mounted in the housing 2.
  • the spring frame 7 can also be integrated in the housing 2, in particular in the base 2 ′′, by inserting the spring frame 7 in the manufacture of the housing 2 by means of injection molding the housing 2 is injected.
  • Such an electrical switch 1 can not only be used as a rotary switch in household appliances, such as washing machines or dishwashers, but can also be used in other electrical appliances, such as power tools.

Landscapes

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

Abstract

L'invention concerne un commutateur (1) électrique, en particulier un commutateur rotatif, pourvu d'un organe d'actionnement rotatif. Un système d'encliquetage (5) coopère avec l'organe d'actionnement de telle sorte que l'organe d'actionnement peut tourner dans des positions d'encliquetage. Le système d'encliquetage (5) est constitué d'une roue d'encliquetage (6), en particulier sensiblement en forme d'étoile, et d'au moins un élément d'encliquetage (7) exerçant une force élastique et coopérant avec la roue d'encliquetage (6). L'élément d'encliquetage (7) se compose d'un cadre élastique, au moins une came (8) venant en prise dans la roue d'encliquetage (6) étant disposée sur ce cadre élastique (7).
EP20753351.4A 2019-09-02 2020-08-06 Commutateur électrique Pending EP3837708A1 (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 (1)

Publication Number Publication Date
EP3837708A1 true EP3837708A1 (fr) 2021-06-23

Family

ID=71994517

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20753351.4A Pending EP3837708A1 (fr) 2019-09-02 2020-08-06 Commutateur électrique

Country Status (3)

Country Link
EP (1) EP3837708A1 (fr)
DE (1) DE102019006159A1 (fr)
WO (1) WO2021043529A1 (fr)

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

Also Published As

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

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